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, see <http://www.gnu.org/licenses/>.
  16  */
  17
  18
  19 #include "config.h"
  20
  21 #include <math.h>
  22 #include <string.h>
  23
  24 #include "gtktreeview.h"
  25
  26 #include "gtkadjustment.h"
  27 #include "gtkrbtree.h"
  28 #include "gtktreednd.h"
  29 #include "gtktreeprivate.h"
  30 #include "gtkcellrenderer.h"
  31 #include "gtkmarshalers.h"
  32 #include "gtkbuildable.h"
  33 #include "gtkbutton.h"
  34 #include "gtklabel.h"
  35 #include "gtkbox.h"
  36 #include "gtkarrow.h"
  37 #include "gtkintl.h"
  38 #include "gtkbindings.h"
  39 #include "gtkcontainer.h"
  40 #include "gtkentry.h"
  41 #include "gtkframe.h"
  42 #include "gtkmain.h"
  43 #include "gtktreemodelsort.h"
  44 #include "gtktooltip.h"
  45 #include "gtkscrollable.h"
  46 #include "gtkcelllayout.h"
  47 #include "gtkprivate.h"
  48 #include "gtkwidgetprivate.h"
  49 #include "gtkentryprivate.h"
  50 #include "gtkstylecontextprivate.h"
  51 #include "gtkcssstylepropertyprivate.h"
  52 #include "gtktypebuiltins.h"
  53 #include "gtkmain.h"
  54 #include "gtksettings.h"
  55 #include "gtkwidgetpath.h"
  56 #include "a11y/gtktreeviewaccessibleprivate.h"
  57
  58
  59 /**
  60  * SECTION:gtktreeview
  61  * @Short_description: A widget for displaying both trees and lists
  62  * @Title: GtkTreeView
  63  * @See_also: #GtkTreeViewColumn, #GtkTreeSelection, #GtkTreeDnd, #GtkTreeMode,
  64  *   #GtkTreeSortable, #GtkTreeModelSort, #GtkListStore, #GtkTreeStore,
  65  *   #GtkCellRenderer, #GtkCellEditable, #GtkCellRendererPixbuf,
  66  *   #GtkCellRendererText, #GtkCellRendererToggle
  67  *
  68  * Widget that displays any object that implements the #GtkTreeModel interface.
  69  *
  70  * Please refer to the <link linkend="TreeWidget">tree widget conceptual
  71  * overview</link> for an overview of all the objects and data types related
  72  * to the tree widget and how they work together.
  73  *
  74  * Several different coordinate systems are exposed in the GtkTreeView API.
  75  * These are:
  76  *
  77  * <inlinegraphic fileref="tree-view-coordinates.png" format="PNG"></inlinegraphic>
  78  * <variablelist><title>Coordinate systems in GtkTreeView API</title>
  79  * <varlistentry><term>Widget coordinates</term>
  80  * <listitem>
  81  * <para>
  82  * Coordinates relative to the widget (usually <literal>widget->window</literal>).
  83  * </para>
  84  * </listitem>
  85  * </varlistentry>
  86  * <varlistentry><term>Bin window coordinates</term>
  87  * <listitem>
  88  * <para>
  89  * Coordinates relative to the window that GtkTreeView renders to.
  90  * </para>
  91  * </listitem>
  92  * </varlistentry>
  93  * <varlistentry><term>Tree coordinates</term>
  94  * <listitem>
  95  * <para>
  96  * Coordinates relative to the entire scrollable area of GtkTreeView. These
  97  * coordinates start at (0, 0) for row 0 of the tree.
  98  * </para>
  99  * </listitem>
 100  * </varlistentry>
 101  * </variablelist>
 102  *
 103  * Several functions are available for converting between the different
 104  * coordinate systems.  The most common translations are between widget and bin
 105  * window coordinates and between bin window and tree coordinates. For the
 106  * former you can use gtk_tree_view_convert_widget_to_bin_window_coords()
 107  * (and vice versa), for the latter gtk_tree_view_convert_bin_window_to_tree_coords()
 108  * (and vice versa).
 109  *
 110  * <refsect2 id="GtkTreeView-BUILDER-UI">
 111  * <title>GtkTreeView as GtkBuildable</title>
 112  * The GtkTreeView implementation of the GtkBuildable interface accepts
 113  * #GtkTreeViewColumn objects as &lt;child&gt; elements and exposes the
 114  * internal #GtkTreeSelection in UI definitions.
 115  * <example>
 116  * <title>A UI definition fragment with GtkTreeView</title>
 117  * <programlisting><![CDATA[
 118  * <object class="GtkTreeView" id="treeview">
 119  *   <property name="model">liststore1</property>
 120  *   <child>
 121  *     <object class="GtkTreeViewColumn" id="test-column">
 122  *       <property name="title">Test</property>
 123  *       <child>
 124  *         <object class="GtkCellRendererText" id="test-renderer"/>
 125  *         <attributes>
 126  *           <attribute name="text">1</attribute>
 127  *         </attributes>
 128  *       </child>
 129  *     </object>
 130  *   </child>
 131  *   <child internal-child="selection">
 132  *     <object class="GtkTreeSelection" id="selection">
 133  *       <signal name="changed" handler="on_treeview_selection_changed"/>
 134  *     </object>
 135  *   </child>
 136  * </object>
 137  * ]]></programlisting>
 138  * </example>
 139  * </refsect2>
 140  */
 141
 142 enum
 143 {
 144   DRAG_COLUMN_WINDOW_STATE_UNSET = 0,
 145   DRAG_COLUMN_WINDOW_STATE_ORIGINAL = 1,
 146   DRAG_COLUMN_WINDOW_STATE_ARROW = 2,
 147   DRAG_COLUMN_WINDOW_STATE_ARROW_LEFT = 3,
 148   DRAG_COLUMN_WINDOW_STATE_ARROW_RIGHT = 4
 149 };
 150
 151 enum
 152 {
 153   RUBBER_BAND_OFF = 0,
 154   RUBBER_BAND_MAYBE_START = 1,
 155   RUBBER_BAND_ACTIVE = 2
 156 };
 157
 158 typedef enum {
 159   CLEAR_AND_SELECT = (1 << 0),
 160   CLAMP_NODE       = (1 << 1),
 161   CURSOR_INVALID   = (1 << 2)
 162 } SetCursorFlags;
 163
 164  /* This lovely little value is used to determine how far away from the title bar
 165   * you can move the mouse and still have a column drag work.
 166   */
 167 #define TREE_VIEW_COLUMN_DRAG_DEAD_MULTIPLIER(tree_view) (10*gtk_tree_view_get_effective_header_height(tree_view))
 168
 169 #ifdef __GNUC__
 170
 171 #define TREE_VIEW_INTERNAL_ASSERT(expr, ret)     G_STMT_START{          \
 172      if (!(expr))                                                       \
 173        {                                                                \
 174          g_log (G_LOG_DOMAIN,                                           \
 175                 G_LOG_LEVEL_CRITICAL,                                   \
 176                 "%s (%s): assertion `%s' failed.\n"                     \
 177                 "There is a disparity between the internal view of the GtkTreeView,\n"    \
 178                 "and the GtkTreeModel.  This generally means that the model has changed\n"\
 179                 "without letting the view know.  Any display from now on is likely to\n"  \
 180                 "be incorrect.\n",                                                        \
 181                 G_STRLOC,                                               \
 182                 G_STRFUNC,                                              \
 183                 #expr);                                                 \
 184          return ret;                                                    \
 185        };                               }G_STMT_END
 186
 187 #define TREE_VIEW_INTERNAL_ASSERT_VOID(expr)     G_STMT_START{          \
 188      if (!(expr))                                                       \
 189        {                                                                \
 190          g_log (G_LOG_DOMAIN,                                           \
 191                 G_LOG_LEVEL_CRITICAL,                                   \
 192                 "%s (%s): assertion `%s' failed.\n"                     \
 193                 "There is a disparity between the internal view of the GtkTreeView,\n"    \
 194                 "and the GtkTreeModel.  This generally means that the model has changed\n"\
 195                 "without letting the view know.  Any display from now on is likely to\n"  \
 196                 "be incorrect.\n",                                                        \
 197                 G_STRLOC,                                               \
 198                 G_STRFUNC,                                              \
 199                 #expr);                                                 \
 200          return;                                                        \
 201        };                               }G_STMT_END
 202
 203 #else
 204
 205 #define TREE_VIEW_INTERNAL_ASSERT(expr, ret)     G_STMT_START{          \
 206      if (!(expr))                                                       \
 207        {                                                                \
 208          g_log (G_LOG_DOMAIN,                                           \
 209                 G_LOG_LEVEL_CRITICAL,                                   \
 210                 "file %s: line %d: assertion `%s' failed.\n"       \
 211                 "There is a disparity between the internal view of the GtkTreeView,\n"    \
 212                 "and the GtkTreeModel.  This generally means that the model has changed\n"\
 213                 "without letting the view know.  Any display from now on is likely to\n"  \
 214                 "be incorrect.\n",                                                        \
 215                 __FILE__,                                               \
 216                 __LINE__,                                               \
 217                 #expr);                                                 \
 218          return ret;                                                    \
 219        };                               }G_STMT_END
 220
 221 #define TREE_VIEW_INTERNAL_ASSERT_VOID(expr)     G_STMT_START{          \
 222      if (!(expr))                                                       \
 223        {                                                                \
 224          g_log (G_LOG_DOMAIN,                                           \
 225                 G_LOG_LEVEL_CRITICAL,                                   \
 226                 "file %s: line %d: assertion '%s' failed.\n"            \
 227                 "There is a disparity between the internal view of the GtkTreeView,\n"    \
 228                 "and the GtkTreeModel.  This generally means that the model has changed\n"\
 229                 "without letting the view know.  Any display from now on is likely to\n"  \
 230                 "be incorrect.\n",                                                        \
 231                 __FILE__,                                               \
 232                 __LINE__,                                               \
 233                 #expr);                                                 \
 234          return;                                                        \
 235        };                               }G_STMT_END
 236 #endif
 237
 238 #define GTK_TREE_VIEW_PRIORITY_VALIDATE (GDK_PRIORITY_REDRAW + 5)
 239 #define GTK_TREE_VIEW_PRIORITY_SCROLL_SYNC (GTK_TREE_VIEW_PRIORITY_VALIDATE + 2)
 240 #define GTK_TREE_VIEW_TIME_MS_PER_IDLE 30
 241 #define SCROLL_EDGE_SIZE 15
 242 #define EXPANDER_EXTRA_PADDING 4
 243 #define GTK_TREE_VIEW_SEARCH_DIALOG_TIMEOUT 5000
 244 #define AUTO_EXPAND_TIMEOUT 500
 245
 246 /* Translate from bin_window coordinates to rbtree (tree coordinates) and
 247  * vice versa.
 248  */
 249 #define TREE_WINDOW_Y_TO_RBTREE_Y(tree_view,y) ((y) + tree_view->priv->dy)
 250 #define RBTREE_Y_TO_TREE_WINDOW_Y(tree_view,y) ((y) - tree_view->priv->dy)
 251
 252 typedef struct _GtkTreeViewColumnReorder GtkTreeViewColumnReorder;
 253 struct _GtkTreeViewColumnReorder
 254 {
 255   gint left_align;
 256   gint right_align;
 257   GtkTreeViewColumn *left_column;
 258   GtkTreeViewColumn *right_column;
 259 };
 260
 261 typedef struct _GtkTreeViewChild GtkTreeViewChild;
 262 struct _GtkTreeViewChild
 263 {
 264   GtkWidget *widget;
 265   gint x;
 266   gint y;
 267   gint width;
 268   gint height;
 269 };
 270
 271
 272 typedef struct _TreeViewDragInfo TreeViewDragInfo;
 273 struct _TreeViewDragInfo
 274 {
 275   GdkModifierType start_button_mask;
 276   GtkTargetList *_unused_source_target_list;
 277   GdkDragAction source_actions;
 278
 279   GtkTargetList *_unused_dest_target_list;
 280
 281   guint source_set : 1;
 282   guint dest_set : 1;
 283 };
 284
 285
 286 struct _GtkTreeViewPrivate
 287 {
 288   GtkTreeModel *model;
 289
 290   /* tree information */
 291   GtkRBTree *tree;
 292
 293   /* Container info */
 294   GList *children;
 295   gint width;
 296   gint height;
 297
 298   /* Adjustments */
 299   GtkAdjustment *hadjustment;
 300   GtkAdjustment *vadjustment;
 301   gint           min_display_width;
 302   gint           min_display_height;
 303
 304   /* Sub windows */
 305   GdkWindow *bin_window;
 306   GdkWindow *header_window;
 307
 308   /* Scroll position state keeping */
 309   GtkTreeRowReference *top_row;
 310   gint top_row_dy;
 311   /* dy == y pos of top_row + top_row_dy */
 312   /* we cache it for simplicity of the code */
 313   gint dy;
 314
 315   guint presize_handler_timer;
 316   guint validate_rows_timer;
 317   guint scroll_sync_timer;
 318
 319   /* Indentation and expander layout */
 320   GtkTreeViewColumn *expander_column;
 321
 322   gint level_indentation;
 323
 324   /* Key navigation (focus), selection */
 325   gint cursor_offset;
 326
 327   GtkTreeRowReference *anchor;
 328   GtkRBNode *cursor_node;
 329   GtkRBTree *cursor_tree;
 330
 331   GtkTreeViewColumn *focus_column;
 332
 333   /* Current pressed node, previously pressed, prelight */
 334   GtkRBNode *button_pressed_node;
 335   GtkRBTree *button_pressed_tree;
 336
 337   gint pressed_button;
 338   gint press_start_x;
 339   gint press_start_y;
 340
 341   gint event_last_x;
 342   gint event_last_y;
 343
 344   guint last_button_time;
 345   gint last_button_x;
 346   gint last_button_y;
 347
 348   GtkRBNode *prelight_node;
 349   GtkRBTree *prelight_tree;
 350
 351   /* Cell Editing */
 352   GtkTreeViewColumn *edited_column;
 353
 354   /* The node that's currently being collapsed or expanded */
 355   GtkRBNode *expanded_collapsed_node;
 356   GtkRBTree *expanded_collapsed_tree;
 357   guint expand_collapse_timeout;
 358
 359   /* Auto expand/collapse timeout in hover mode */
 360   guint auto_expand_timeout;
 361
 362   /* Selection information */
 363   GtkTreeSelection *selection;
 364
 365   /* Header information */
 366   gint n_columns;
 367   GList *columns;
 368   gint header_height;
 369
 370   GtkTreeViewColumnDropFunc column_drop_func;
 371   gpointer column_drop_func_data;
 372   GDestroyNotify column_drop_func_data_destroy;
 373   GList *column_drag_info;
 374   GtkTreeViewColumnReorder *cur_reorder;
 375
 376   gint prev_width_before_expander;
 377
 378   /* Interactive Header reordering */
 379   GdkWindow *drag_window;
 380   GdkWindow *drag_highlight_window;
 381   GtkTreeViewColumn *drag_column;
 382   gint drag_column_x;
 383
 384   /* Interactive Header Resizing */
 385   gint drag_pos;
 386   gint x_drag;
 387
 388   /* Non-interactive Header Resizing, expand flag support */
 389   gint prev_width;
 390
 391   gint last_extra_space;
 392   gint last_extra_space_per_column;
 393   gint last_number_of_expand_columns;
 394
 395   /* ATK Hack */
 396   GtkTreeDestroyCountFunc destroy_count_func;
 397   gpointer destroy_count_data;
 398   GDestroyNotify destroy_count_destroy;
 399
 400   /* Scroll timeout (e.g. during dnd, rubber banding) */
 401   guint scroll_timeout;
 402
 403   /* Row drag-and-drop */
 404   GtkTreeRowReference *drag_dest_row;
 405   GtkTreeViewDropPosition drag_dest_pos;
 406   guint open_dest_timeout;
 407
 408   /* Rubber banding */
 409   gint rubber_band_status;
 410   gint rubber_band_x;
 411   gint rubber_band_y;
 412   gint rubber_band_extend;
 413   gint rubber_band_modify;
 414
 415   GtkRBNode *rubber_band_start_node;
 416   GtkRBTree *rubber_band_start_tree;
 417
 418   GtkRBNode *rubber_band_end_node;
 419   GtkRBTree *rubber_band_end_tree;
 420
 421   /* fixed height */
 422   gint fixed_height;
 423
 424   /* Scroll-to functionality when unrealized */
 425   GtkTreeRowReference *scroll_to_path;
 426   GtkTreeViewColumn *scroll_to_column;
 427   gfloat scroll_to_row_align;
 428   gfloat scroll_to_col_align;
 429
 430   /* Interactive search */
 431   gint selected_iter;
 432   gint search_column;
 433   GtkTreeViewSearchPositionFunc search_position_func;
 434   GtkTreeViewSearchEqualFunc search_equal_func;
 435   gpointer search_user_data;
 436   GDestroyNotify search_destroy;
 437   gpointer search_position_user_data;
 438   GDestroyNotify search_position_destroy;
 439   GtkWidget *search_window;
 440   GtkWidget *search_entry;
 441   gulong search_entry_changed_id;
 442   guint typeselect_flush_timeout;
 443
 444   /* Grid and tree lines */
 445   GtkTreeViewGridLines grid_lines;
 446   double grid_line_dashes[2];
 447   int grid_line_width;
 448
 449   gboolean tree_lines_enabled;
 450   double tree_line_dashes[2];
 451   int tree_line_width;
 452
 453   /* Row separators */
 454   GtkTreeViewRowSeparatorFunc row_separator_func;
 455   gpointer row_separator_data;
 456   GDestroyNotify row_separator_destroy;
 457
 458   /* Tooltip support */
 459   gint tooltip_column;
 460
 461   /* Here comes the bitfield */
 462   guint scroll_to_use_align : 1;
 463
 464   guint fixed_height_mode : 1;
 465   guint fixed_height_check : 1;
 466
 467   guint reorderable : 1;
 468   guint header_has_focus : 1;
 469   guint drag_column_window_state : 3;
 470   /* hint to display rows in alternating colors */
 471   guint has_rules : 1;
 472   guint mark_rows_col_dirty : 1;
 473
 474   /* for DnD */
 475   guint empty_view_drop : 1;
 476
 477   guint modify_selection_pressed : 1;
 478   guint extend_selection_pressed : 1;
 479
 480   guint init_hadjust_value : 1;
 481
 482   guint in_top_row_to_dy : 1;
 483
 484   /* interactive search */
 485   guint enable_search : 1;
 486   guint disable_popdown : 1;
 487   guint search_custom_entry_set : 1;
 488
 489   guint hover_selection : 1;
 490   guint hover_expand : 1;
 491   guint imcontext_changed : 1;
 492
 493   guint rubber_banding_enable : 1;
 494
 495   guint in_grab : 1;
 496
 497   guint post_validation_flag : 1;
 498
 499   /* Whether our key press handler is to avoid sending an unhandled binding to the search entry */
 500   guint search_entry_avoid_unhandled_binding : 1;
 501
 502   /* GtkScrollablePolicy needs to be checked when
 503    * driving the scrollable adjustment values */
 504   guint hscroll_policy : 1;
 505   guint vscroll_policy : 1;
 506
 507   /* GtkTreeView flags */
 508   guint is_list : 1;
 509   guint show_expanders : 1;
 510   guint in_column_resize : 1;
 511   guint arrow_prelit : 1;
 512   guint headers_visible : 1;
 513   guint draw_keyfocus : 1;
 514   guint model_setup : 1;
 515   guint in_column_drag : 1;
 516 };
 517
 518
 519 /* Signals */
 520 enum
 521 {
 522   ROW_ACTIVATED,
 523   TEST_EXPAND_ROW,
 524   TEST_COLLAPSE_ROW,
 525   ROW_EXPANDED,
 526   ROW_COLLAPSED,
 527   COLUMNS_CHANGED,
 528   CURSOR_CHANGED,
 529   MOVE_CURSOR,
 530   SELECT_ALL,
 531   UNSELECT_ALL,
 532   SELECT_CURSOR_ROW,
 533   TOGGLE_CURSOR_ROW,
 534   EXPAND_COLLAPSE_CURSOR_ROW,
 535   SELECT_CURSOR_PARENT,
 536   START_INTERACTIVE_SEARCH,
 537   LAST_SIGNAL
 538 };
 539
 540 /* Properties */
 541 enum {
 542   PROP_0,
 543   PROP_MODEL,
 544   PROP_HADJUSTMENT,
 545   PROP_VADJUSTMENT,
 546   PROP_HSCROLL_POLICY,
 547   PROP_VSCROLL_POLICY,
 548   PROP_HEADERS_VISIBLE,
 549   PROP_HEADERS_CLICKABLE,
 550   PROP_EXPANDER_COLUMN,
 551   PROP_REORDERABLE,
 552   PROP_RULES_HINT,
 553   PROP_ENABLE_SEARCH,
 554   PROP_SEARCH_COLUMN,
 555   PROP_FIXED_HEIGHT_MODE,
 556   PROP_HOVER_SELECTION,
 557   PROP_HOVER_EXPAND,
 558   PROP_SHOW_EXPANDERS,
 559   PROP_LEVEL_INDENTATION,
 560   PROP_RUBBER_BANDING,
 561   PROP_ENABLE_GRID_LINES,
 562   PROP_ENABLE_TREE_LINES,
 563   PROP_TOOLTIP_COLUMN
 564 };
 565
 566 /* object signals */
 567 static void     gtk_tree_view_finalize             (GObject          *object);
 568 static void     gtk_tree_view_set_property         (GObject         *object,
 569                                                     guint            prop_id,
 570                                                     const GValue    *value,
 571                                                     GParamSpec      *pspec);
 572 static void     gtk_tree_view_get_property         (GObject         *object,
 573                                                     guint            prop_id,
 574                                                     GValue          *value,
 575                                                     GParamSpec      *pspec);
 576
 577 /* gtkwidget signals */
 578 static void     gtk_tree_view_destroy              (GtkWidget        *widget);
 579 static void     gtk_tree_view_realize              (GtkWidget        *widget);
 580 static void     gtk_tree_view_unrealize            (GtkWidget        *widget);
 581 static void     gtk_tree_view_map                  (GtkWidget        *widget);
 582 static void     gtk_tree_view_get_preferred_width  (GtkWidget        *widget,
 583                                                     gint             *minimum,
 584                                                     gint             *natural);
 585 static void     gtk_tree_view_get_preferred_height (GtkWidget        *widget,
 586                                                     gint             *minimum,
 587                                                     gint             *natural);
 588 static void     gtk_tree_view_size_request         (GtkWidget        *widget,
 589                                                     GtkRequisition   *requisition,
 590                                                     gboolean          may_validate);
 591 static void     gtk_tree_view_size_allocate        (GtkWidget        *widget,
 592                                                     GtkAllocation    *allocation);
 593 static gboolean gtk_tree_view_draw                 (GtkWidget        *widget,
 594                                                     cairo_t          *cr);
 595 static gboolean gtk_tree_view_key_press            (GtkWidget        *widget,
 596                                                     GdkEventKey      *event);
 597 static gboolean gtk_tree_view_key_release          (GtkWidget        *widget,
 598                                                     GdkEventKey      *event);
 599 static gboolean gtk_tree_view_motion               (GtkWidget        *widget,
 600                                                     GdkEventMotion   *event);
 601 static gboolean gtk_tree_view_enter_notify         (GtkWidget        *widget,
 602                                                     GdkEventCrossing *event);
 603 static gboolean gtk_tree_view_leave_notify         (GtkWidget        *widget,
 604                                                     GdkEventCrossing *event);
 605 static gboolean gtk_tree_view_button_press         (GtkWidget        *widget,
 606                                                     GdkEventButton   *event);
 607 static gboolean gtk_tree_view_button_release       (GtkWidget        *widget,
 608                                                     GdkEventButton   *event);
 609 static gboolean gtk_tree_view_grab_broken          (GtkWidget          *widget,
 610                                                     GdkEventGrabBroken *event);
 611 #if 0
 612 static gboolean gtk_tree_view_configure            (GtkWidget         *widget,
 613                                                     GdkEventConfigure *event);
 614 #endif
 615
 616 static GtkWidgetPath * gtk_tree_view_get_path_for_child (GtkContainer *container,
 617                                                          GtkWidget    *child);
 618
 619 static void     gtk_tree_view_set_focus_child      (GtkContainer     *container,
 620                                                     GtkWidget        *child);
 621 static gint     gtk_tree_view_focus_out            (GtkWidget        *widget,
 622                                                     GdkEventFocus    *event);
 623 static gint     gtk_tree_view_focus                (GtkWidget        *widget,
 624                                                     GtkDirectionType  direction);
 625 static void     gtk_tree_view_grab_focus           (GtkWidget        *widget);
 626 static void     gtk_tree_view_style_updated        (GtkWidget        *widget);
 627 static void     gtk_tree_view_grab_notify          (GtkWidget        *widget,
 628                                                     gboolean          was_grabbed);
 629 static void     gtk_tree_view_state_flags_changed  (GtkWidget        *widget,
 630                                                     GtkStateFlags     previous_state);
 631
 632 /* container signals */
 633 static void     gtk_tree_view_remove               (GtkContainer     *container,
 634                                                     GtkWidget        *widget);
 635 static void     gtk_tree_view_forall               (GtkContainer     *container,
 636                                                     gboolean          include_internals,
 637                                                     GtkCallback       callback,
 638                                                     gpointer          callback_data);
 639
 640 /* Source side drag signals */
 641 static void gtk_tree_view_drag_begin       (GtkWidget        *widget,
 642                                             GdkDragContext   *context);
 643 static void gtk_tree_view_drag_end         (GtkWidget        *widget,
 644                                             GdkDragContext   *context);
 645 static void gtk_tree_view_drag_data_get    (GtkWidget        *widget,
 646                                             GdkDragContext   *context,
 647                                             GtkSelectionData *selection_data,
 648                                             guint             info,
 649                                             guint             time);
 650 static void gtk_tree_view_drag_data_delete (GtkWidget        *widget,
 651                                             GdkDragContext   *context);
 652
 653 /* Target side drag signals */
 654 static void     gtk_tree_view_drag_leave         (GtkWidget        *widget,
 655                                                   GdkDragContext   *context,
 656                                                   guint             time);
 657 static gboolean gtk_tree_view_drag_motion        (GtkWidget        *widget,
 658                                                   GdkDragContext   *context,
 659                                                   gint              x,
 660                                                   gint              y,
 661                                                   guint             time);
 662 static gboolean gtk_tree_view_drag_drop          (GtkWidget        *widget,
 663                                                   GdkDragContext   *context,
 664                                                   gint              x,
 665                                                   gint              y,
 666                                                   guint             time);
 667 static void     gtk_tree_view_drag_data_received (GtkWidget        *widget,
 668                                                   GdkDragContext   *context,
 669                                                   gint              x,
 670                                                   gint              y,
 671                                                   GtkSelectionData *selection_data,
 672                                                   guint             info,
 673                                                   guint             time);
 674
 675 /* tree_model signals */
 676 static gboolean gtk_tree_view_real_move_cursor            (GtkTreeView     *tree_view,
 677                                                            GtkMovementStep  step,
 678                                                            gint             count);
 679 static gboolean gtk_tree_view_real_select_all             (GtkTreeView     *tree_view);
 680 static gboolean gtk_tree_view_real_unselect_all           (GtkTreeView     *tree_view);
 681 static gboolean gtk_tree_view_real_select_cursor_row      (GtkTreeView     *tree_view,
 682                                                            gboolean         start_editing);
 683 static gboolean gtk_tree_view_real_toggle_cursor_row      (GtkTreeView     *tree_view);
 684 static gboolean gtk_tree_view_real_expand_collapse_cursor_row (GtkTreeView     *tree_view,
 685                                                                gboolean         logical,
 686                                                                gboolean         expand,
 687                                                                gboolean         open_all);
 688 static gboolean gtk_tree_view_real_select_cursor_parent   (GtkTreeView     *tree_view);
 689 static void gtk_tree_view_row_changed                     (GtkTreeModel    *model,
 690                                                            GtkTreePath     *path,
 691                                                            GtkTreeIter     *iter,
 692                                                            gpointer         data);
 693 static void gtk_tree_view_row_inserted                    (GtkTreeModel    *model,
 694                                                            GtkTreePath     *path,
 695                                                            GtkTreeIter     *iter,
 696                                                            gpointer         data);
 697 static void gtk_tree_view_row_has_child_toggled           (GtkTreeModel    *model,
 698                                                            GtkTreePath     *path,
 699                                                            GtkTreeIter     *iter,
 700                                                            gpointer         data);
 701 static void gtk_tree_view_row_deleted                     (GtkTreeModel    *model,
 702                                                            GtkTreePath     *path,
 703                                                            gpointer         data);
 704 static void gtk_tree_view_rows_reordered                  (GtkTreeModel    *model,
 705                                                            GtkTreePath     *parent,
 706                                                            GtkTreeIter     *iter,
 707                                                            gint            *new_order,
 708                                                            gpointer         data);
 709
 710 /* Incremental reflow */
 711 static gboolean validate_row             (GtkTreeView *tree_view,
 712                                           GtkRBTree   *tree,
 713                                           GtkRBNode   *node,
 714                                           GtkTreeIter *iter,
 715                                           GtkTreePath *path);
 716 static void     validate_visible_area    (GtkTreeView *tree_view);
 717 static gboolean validate_rows_handler    (GtkTreeView *tree_view);
 718 static gboolean do_validate_rows         (GtkTreeView *tree_view,
 719                                           gboolean     size_request);
 720 static gboolean validate_rows            (GtkTreeView *tree_view);
 721 static gboolean presize_handler_callback (gpointer     data);
 722 static void     install_presize_handler  (GtkTreeView *tree_view);
 723 static void     install_scroll_sync_handler (GtkTreeView *tree_view);
 724 static void     gtk_tree_view_set_top_row   (GtkTreeView *tree_view,
 725                                              GtkTreePath *path,
 726                                              gint         offset);
 727 static void     gtk_tree_view_dy_to_top_row (GtkTreeView *tree_view);
 728 static void     gtk_tree_view_top_row_to_dy (GtkTreeView *tree_view);
 729 static void     invalidate_empty_focus      (GtkTreeView *tree_view);
 730
 731 /* Internal functions */
 732 static gboolean gtk_tree_view_is_expander_column             (GtkTreeView        *tree_view,
 733                                                               GtkTreeViewColumn  *column);
 734 static inline gboolean gtk_tree_view_draw_expanders          (GtkTreeView        *tree_view);
 735 static void     gtk_tree_view_add_move_binding               (GtkBindingSet      *binding_set,
 736                                                               guint               keyval,
 737                                                               guint               modmask,
 738                                                               gboolean            add_shifted_binding,
 739                                                               GtkMovementStep     step,
 740                                                               gint                count);
 741 static gint     gtk_tree_view_unref_and_check_selection_tree (GtkTreeView        *tree_view,
 742                                                               GtkRBTree          *tree);
 743 static void     gtk_tree_view_queue_draw_path                (GtkTreeView        *tree_view,
 744                                                               GtkTreePath        *path,
 745                                                               const GdkRectangle *clip_rect);
 746 static void     gtk_tree_view_queue_draw_arrow               (GtkTreeView        *tree_view,
 747                                                               GtkRBTree          *tree,
 748                                                               GtkRBNode          *node);
 749 static void     gtk_tree_view_draw_arrow                     (GtkTreeView        *tree_view,
 750                                                               cairo_t            *cr,
 751                                                               GtkRBTree          *tree,
 752                                                               GtkRBNode          *node);
 753 static void     gtk_tree_view_get_arrow_xrange               (GtkTreeView        *tree_view,
 754                                                               GtkRBTree          *tree,
 755                                                               gint               *x1,
 756                                                               gint               *x2);
 757 static gint     gtk_tree_view_new_column_width               (GtkTreeView        *tree_view,
 758                                                               gint                i,
 759                                                               gint               *x);
 760 static void     gtk_tree_view_adjustment_changed             (GtkAdjustment      *adjustment,
 761                                                               GtkTreeView        *tree_view);
 762 static void     gtk_tree_view_build_tree                     (GtkTreeView        *tree_view,
 763                                                               GtkRBTree          *tree,
 764                                                               GtkTreeIter        *iter,
 765                                                               gint                depth,
 766                                                               gboolean            recurse);
 767 static void     gtk_tree_view_clamp_node_visible             (GtkTreeView        *tree_view,
 768                                                               GtkRBTree          *tree,
 769                                                               GtkRBNode          *node);
 770 static void     gtk_tree_view_clamp_column_visible           (GtkTreeView        *tree_view,
 771                                                               GtkTreeViewColumn  *column,
 772                                                               gboolean            focus_to_cell);
 773 static gboolean gtk_tree_view_maybe_begin_dragging_row       (GtkTreeView        *tree_view,
 774                                                               GdkEventMotion     *event);
 775 static void     gtk_tree_view_focus_to_cursor                (GtkTreeView        *tree_view);
 776 static void     gtk_tree_view_move_cursor_up_down            (GtkTreeView        *tree_view,
 777                                                               gint                count);
 778 static void     gtk_tree_view_move_cursor_page_up_down       (GtkTreeView        *tree_view,
 779                                                               gint                count);
 780 static void     gtk_tree_view_move_cursor_left_right         (GtkTreeView        *tree_view,
 781                                                               gint                count);
 782 static void     gtk_tree_view_move_cursor_start_end          (GtkTreeView        *tree_view,
 783                                                               gint                count);
 784 static gboolean gtk_tree_view_real_collapse_row              (GtkTreeView        *tree_view,
 785                                                               GtkTreePath        *path,
 786                                                               GtkRBTree          *tree,
 787                                                               GtkRBNode          *node,
 788                                                               gboolean            animate);
 789 static gboolean gtk_tree_view_real_expand_row                (GtkTreeView        *tree_view,
 790                                                               GtkTreePath        *path,
 791                                                               GtkRBTree          *tree,
 792                                                               GtkRBNode          *node,
 793                                                               gboolean            open_all,
 794                                                               gboolean            animate);
 795 static void     gtk_tree_view_real_set_cursor                (GtkTreeView        *tree_view,
 796                                                               GtkTreePath        *path,
 797                                                               SetCursorFlags      flags);
 798 static gboolean gtk_tree_view_has_can_focus_cell             (GtkTreeView        *tree_view);
 799 static void     column_sizing_notify                         (GObject            *object,
 800                                                               GParamSpec         *pspec,
 801                                                               gpointer            data);
 802 static void     gtk_tree_view_stop_rubber_band               (GtkTreeView        *tree_view);
 803 static void     update_prelight                              (GtkTreeView        *tree_view,
 804                                                               int                 x,
 805                                                               int                 y);
 806
 807 static inline gint gtk_tree_view_get_effective_header_height (GtkTreeView *tree_view);
 808
 809 static inline gint gtk_tree_view_get_cell_area_y_offset      (GtkTreeView *tree_view,
 810                                                               GtkRBTree   *tree,
 811                                                               GtkRBNode   *node,
 812                                                               gint         vertical_separator);
 813 static inline gint gtk_tree_view_get_cell_area_height        (GtkTreeView *tree_view,
 814                                                               GtkRBNode   *node,
 815                                                               gint         vertical_separator);
 816
 817 static inline gint gtk_tree_view_get_row_y_offset            (GtkTreeView *tree_view,
 818                                                               GtkRBTree   *tree,
 819                                                               GtkRBNode   *node);
 820 static inline gint gtk_tree_view_get_row_height              (GtkTreeView *tree_view,
 821                                                               GtkRBNode   *node);
 822
 823 /* interactive search */
 824 static void     gtk_tree_view_ensure_interactive_directory (GtkTreeView *tree_view);
 825 static void     gtk_tree_view_search_dialog_hide        (GtkWidget        *search_dialog,
 826                                                          GtkTreeView      *tree_view,
 827                                                          GdkDevice        *device);
 828 static void     gtk_tree_view_search_position_func      (GtkTreeView      *tree_view,
 829                                                          GtkWidget        *search_dialog,
 830                                                          gpointer          user_data);
 831 static void     gtk_tree_view_search_disable_popdown    (GtkEntry         *entry,
 832                                                          GtkMenu          *menu,
 833                                                          gpointer          data);
 834 static void     gtk_tree_view_search_preedit_changed    (GtkIMContext     *im_context,
 835                                                          GtkTreeView      *tree_view);
 836 static void     gtk_tree_view_search_activate           (GtkEntry         *entry,
 837                                                          GtkTreeView      *tree_view);
 838 static gboolean gtk_tree_view_real_search_enable_popdown(gpointer          data);
 839 static void     gtk_tree_view_search_enable_popdown     (GtkWidget        *widget,
 840                                                          gpointer          data);
 841 static gboolean gtk_tree_view_search_delete_event       (GtkWidget        *widget,
 842                                                          GdkEventAny      *event,
 843                                                          GtkTreeView      *tree_view);
 844 static gboolean gtk_tree_view_search_button_press_event (GtkWidget        *widget,
 845                                                          GdkEventButton   *event,
 846                                                          GtkTreeView      *tree_view);
 847 static gboolean gtk_tree_view_search_scroll_event       (GtkWidget        *entry,
 848                                                          GdkEventScroll   *event,
 849                                                          GtkTreeView      *tree_view);
 850 static gboolean gtk_tree_view_search_key_press_event    (GtkWidget        *entry,
 851                                                          GdkEventKey      *event,
 852                                                          GtkTreeView      *tree_view);
 853 static gboolean gtk_tree_view_search_move               (GtkWidget        *window,
 854                                                          GtkTreeView      *tree_view,
 855                                                          gboolean          up);
 856 static gboolean gtk_tree_view_search_equal_func         (GtkTreeModel     *model,
 857                                                          gint              column,
 858                                                          const gchar      *key,
 859                                                          GtkTreeIter      *iter,
 860                                                          gpointer          search_data);
 861 static gboolean gtk_tree_view_search_iter               (GtkTreeModel     *model,
 862                                                          GtkTreeSelection *selection,
 863                                                          GtkTreeIter      *iter,
 864                                                          const gchar      *text,
 865                                                          gint             *count,
 866                                                          gint              n);
 867 static void     gtk_tree_view_search_init               (GtkWidget        *entry,
 868                                                          GtkTreeView      *tree_view);
 869 static void     gtk_tree_view_put                       (GtkTreeView      *tree_view,
 870                                                          GtkWidget        *child_widget,
 871                                                          gint              x,
 872                                                          gint              y,
 873                                                          gint              width,
 874                                                          gint              height);
 875 static gboolean gtk_tree_view_start_editing             (GtkTreeView      *tree_view,
 876                                                          GtkTreePath      *cursor_path,
 877                                                          gboolean          edit_only);
 878 static void gtk_tree_view_stop_editing                  (GtkTreeView *tree_view,
 879                                                          gboolean     cancel_editing);
 880 static gboolean gtk_tree_view_real_start_interactive_search (GtkTreeView *tree_view,
 881                                                              GdkDevice   *device,
 882                                                              gboolean     keybinding);
 883 static gboolean gtk_tree_view_start_interactive_search      (GtkTreeView *tree_view);
 884 static GtkTreeViewColumn *gtk_tree_view_get_drop_column (GtkTreeView       *tree_view,
 885                                                          GtkTreeViewColumn *column,
 886                                                          gint               drop_position);
 887
 888 /* GtkBuildable */
 889 static void     gtk_tree_view_buildable_add_child          (GtkBuildable      *tree_view,
 890                                                             GtkBuilder        *builder,
 891                                                             GObject           *child,
 892                                                             const gchar       *type);
 893 static GObject *gtk_tree_view_buildable_get_internal_child (GtkBuildable      *buildable,
 894                                                             GtkBuilder        *builder,
 895                                                             const gchar       *childname);
 896 static void     gtk_tree_view_buildable_init               (GtkBuildableIface *iface);
 897
 898 static GtkAdjustment *gtk_tree_view_do_get_hadjustment (GtkTreeView   *tree_view);
 899 static void           gtk_tree_view_do_set_hadjustment (GtkTreeView   *tree_view,
 900                                                         GtkAdjustment *adjustment);
 901 static GtkAdjustment *gtk_tree_view_do_get_vadjustment (GtkTreeView   *tree_view);
 902 static void           gtk_tree_view_do_set_vadjustment (GtkTreeView   *tree_view,
 903                                                         GtkAdjustment *adjustment);
 904
 905 static gboolean scroll_row_timeout                   (gpointer     data);
 906 static void     add_scroll_timeout                   (GtkTreeView *tree_view);
 907 static void     remove_scroll_timeout                (GtkTreeView *tree_view);
 908
 909 static guint tree_view_signals [LAST_SIGNAL] = { 0 };
 910
 911 \f
 912
 913 /* GType Methods
 914  */
 915
 916 G_DEFINE_TYPE_WITH_CODE (GtkTreeView, gtk_tree_view, GTK_TYPE_CONTAINER,
 917                          G_IMPLEMENT_INTERFACE (GTK_TYPE_BUILDABLE,
 918                                                 gtk_tree_view_buildable_init)
 919                          G_IMPLEMENT_INTERFACE (GTK_TYPE_SCROLLABLE, NULL))
 920
 921 static void
 922 gtk_tree_view_class_init (GtkTreeViewClass *class)
 923 {
 924   GObjectClass *o_class;
 925   GtkWidgetClass *widget_class;
 926   GtkContainerClass *container_class;
 927   GtkBindingSet *binding_set;
 928
 929   binding_set = gtk_binding_set_by_class (class);
 930
 931   o_class = (GObjectClass *) class;
 932   widget_class = (GtkWidgetClass *) class;
 933   container_class = (GtkContainerClass *) class;
 934
 935   /* GObject signals */
 936   o_class->set_property = gtk_tree_view_set_property;
 937   o_class->get_property = gtk_tree_view_get_property;
 938   o_class->finalize = gtk_tree_view_finalize;
 939
 940   /* GtkWidget signals */
 941   widget_class->destroy = gtk_tree_view_destroy;
 942   widget_class->map = gtk_tree_view_map;
 943   widget_class->realize = gtk_tree_view_realize;
 944   widget_class->unrealize = gtk_tree_view_unrealize;
 945   widget_class->get_preferred_width = gtk_tree_view_get_preferred_width;
 946   widget_class->get_preferred_height = gtk_tree_view_get_preferred_height;
 947   widget_class->size_allocate = gtk_tree_view_size_allocate;
 948   widget_class->button_press_event = gtk_tree_view_button_press;
 949   widget_class->button_release_event = gtk_tree_view_button_release;
 950   widget_class->grab_broken_event = gtk_tree_view_grab_broken;
 951   /*widget_class->configure_event = gtk_tree_view_configure;*/
 952   widget_class->motion_notify_event = gtk_tree_view_motion;
 953   widget_class->draw = gtk_tree_view_draw;
 954   widget_class->key_press_event = gtk_tree_view_key_press;
 955   widget_class->key_release_event = gtk_tree_view_key_release;
 956   widget_class->enter_notify_event = gtk_tree_view_enter_notify;
 957   widget_class->leave_notify_event = gtk_tree_view_leave_notify;
 958   widget_class->focus_out_event = gtk_tree_view_focus_out;
 959   widget_class->drag_begin = gtk_tree_view_drag_begin;
 960   widget_class->drag_end = gtk_tree_view_drag_end;
 961   widget_class->drag_data_get = gtk_tree_view_drag_data_get;
 962   widget_class->drag_data_delete = gtk_tree_view_drag_data_delete;
 963   widget_class->drag_leave = gtk_tree_view_drag_leave;
 964   widget_class->drag_motion = gtk_tree_view_drag_motion;
 965   widget_class->drag_drop = gtk_tree_view_drag_drop;
 966   widget_class->drag_data_received = gtk_tree_view_drag_data_received;
 967   widget_class->focus = gtk_tree_view_focus;
 968   widget_class->grab_focus = gtk_tree_view_grab_focus;
 969   widget_class->style_updated = gtk_tree_view_style_updated;
 970   widget_class->grab_notify = gtk_tree_view_grab_notify;
 971   widget_class->state_flags_changed = gtk_tree_view_state_flags_changed;
 972
 973   /* GtkContainer signals */
 974   container_class->remove = gtk_tree_view_remove;
 975   container_class->forall = gtk_tree_view_forall;
 976   container_class->set_focus_child = gtk_tree_view_set_focus_child;
 977   container_class->get_path_for_child = gtk_tree_view_get_path_for_child;
 978
 979   class->move_cursor = gtk_tree_view_real_move_cursor;
 980   class->select_all = gtk_tree_view_real_select_all;
 981   class->unselect_all = gtk_tree_view_real_unselect_all;
 982   class->select_cursor_row = gtk_tree_view_real_select_cursor_row;
 983   class->toggle_cursor_row = gtk_tree_view_real_toggle_cursor_row;
 984   class->expand_collapse_cursor_row = gtk_tree_view_real_expand_collapse_cursor_row;
 985   class->select_cursor_parent = gtk_tree_view_real_select_cursor_parent;
 986   class->start_interactive_search = gtk_tree_view_start_interactive_search;
 987
 988   /* Properties */
 989
 990   g_object_class_install_property (o_class,
 991                                    PROP_MODEL,
 992                                    g_param_spec_object ("model",
 993                                                         P_("TreeView Model"),
 994                                                         P_("The model for the tree view"),
 995                                                         GTK_TYPE_TREE_MODEL,
 996                                                         GTK_PARAM_READWRITE));
 997
 998   g_object_class_override_property (o_class, PROP_HADJUSTMENT,    "hadjustment");
 999   g_object_class_override_property (o_class, PROP_VADJUSTMENT,    "vadjustment");
1000   g_object_class_override_property (o_class, PROP_HSCROLL_POLICY, "hscroll-policy");
1001   g_object_class_override_property (o_class, PROP_VSCROLL_POLICY, "vscroll-policy");
1002
1003   g_object_class_install_property (o_class,
1004                                    PROP_HEADERS_VISIBLE,
1005                                    g_param_spec_boolean ("headers-visible",
1006                                                          P_("Headers Visible"),
1007                                                          P_("Show the column header buttons"),
1008                                                          TRUE,
1009                                                          GTK_PARAM_READWRITE));
1010
1011   g_object_class_install_property (o_class,
1012                                    PROP_HEADERS_CLICKABLE,
1013                                    g_param_spec_boolean ("headers-clickable",
1014                                                          P_("Headers Clickable"),
1015                                                          P_("Column headers respond to click events"),
1016                                                          TRUE,
1017                                                          GTK_PARAM_READWRITE));
1018
1019   g_object_class_install_property (o_class,
1020                                    PROP_EXPANDER_COLUMN,
1021                                    g_param_spec_object ("expander-column",
1022                                                         P_("Expander Column"),
1023                                                         P_("Set the column for the expander column"),
1024                                                         GTK_TYPE_TREE_VIEW_COLUMN,
1025                                                         GTK_PARAM_READWRITE));
1026
1027   g_object_class_install_property (o_class,
1028                                    PROP_REORDERABLE,
1029                                    g_param_spec_boolean ("reorderable",
1030                                                          P_("Reorderable"),
1031                                                          P_("View is reorderable"),
1032                                                          FALSE,
1033                                                          GTK_PARAM_READWRITE));
1034
1035   g_object_class_install_property (o_class,
1036                                    PROP_RULES_HINT,
1037                                    g_param_spec_boolean ("rules-hint",
1038                                                          P_("Rules Hint"),
1039                                                          P_("Set a hint to the theme engine to draw rows in alternating colors"),
1040                                                          FALSE,
1041                                                          GTK_PARAM_READWRITE));
1042
1043     g_object_class_install_property (o_class,
1044                                      PROP_ENABLE_SEARCH,
1045                                      g_param_spec_boolean ("enable-search",
1046                                                            P_("Enable Search"),
1047                                                            P_("View allows user to search through columns interactively"),
1048                                                            TRUE,
1049                                                            GTK_PARAM_READWRITE));
1050
1051     g_object_class_install_property (o_class,
1052                                      PROP_SEARCH_COLUMN,
1053                                      g_param_spec_int ("search-column",
1054                                                        P_("Search Column"),
1055                                                        P_("Model column to search through during interactive search"),
1056                                                        -1,
1057                                                        G_MAXINT,
1058                                                        -1,
1059                                                        GTK_PARAM_READWRITE));
1060
1061     /**
1062      * GtkTreeView:fixed-height-mode:
1063      *
1064      * Setting the ::fixed-height-mode property to %TRUE speeds up
1065      * #GtkTreeView by assuming that all rows have the same height.
1066      * Only enable this option if all rows are the same height.
1067      * Please see gtk_tree_view_set_fixed_height_mode() for more
1068      * information on this option.
1069      *
1070      * Since: 2.4
1071      **/
1072     g_object_class_install_property (o_class,
1073                                      PROP_FIXED_HEIGHT_MODE,
1074                                      g_param_spec_boolean ("fixed-height-mode",
1075                                                            P_("Fixed Height Mode"),
1076                                                            P_("Speeds up GtkTreeView by assuming that all rows have the same height"),
1077                                                            FALSE,
1078                                                            GTK_PARAM_READWRITE));
1079
1080     /**
1081      * GtkTreeView:hover-selection:
1082      *
1083      * Enables or disables the hover selection mode of @tree_view.
1084      * Hover selection makes the selected row follow the pointer.
1085      * Currently, this works only for the selection modes
1086      * %GTK_SELECTION_SINGLE and %GTK_SELECTION_BROWSE.
1087      *
1088      * This mode is primarily intended for treeviews in popups, e.g.
1089      * in #GtkComboBox or #GtkEntryCompletion.
1090      *
1091      * Since: 2.6
1092      */
1093     g_object_class_install_property (o_class,
1094                                      PROP_HOVER_SELECTION,
1095                                      g_param_spec_boolean ("hover-selection",
1096                                                            P_("Hover Selection"),
1097                                                            P_("Whether the selection should follow the pointer"),
1098                                                            FALSE,
1099                                                            GTK_PARAM_READWRITE));
1100
1101     /**
1102      * GtkTreeView:hover-expand:
1103      *
1104      * Enables or disables the hover expansion mode of @tree_view.
1105      * Hover expansion makes rows expand or collapse if the pointer moves
1106      * over them.
1107      *
1108      * This mode is primarily intended for treeviews in popups, e.g.
1109      * in #GtkComboBox or #GtkEntryCompletion.
1110      *
1111      * Since: 2.6
1112      */
1113     g_object_class_install_property (o_class,
1114                                      PROP_HOVER_EXPAND,
1115                                      g_param_spec_boolean ("hover-expand",
1116                                                            P_("Hover Expand"),
1117                                                            P_("Whether rows should be expanded/collapsed when the pointer moves over them"),
1118                                                            FALSE,
1119                                                            GTK_PARAM_READWRITE));
1120
1121     /**
1122      * GtkTreeView:show-expanders:
1123      *
1124      * %TRUE if the view has expanders.
1125      *
1126      * Since: 2.12
1127      */
1128     g_object_class_install_property (o_class,
1129                                      PROP_SHOW_EXPANDERS,
1130                                      g_param_spec_boolean ("show-expanders",
1131                                                            P_("Show Expanders"),
1132                                                            P_("View has expanders"),
1133                                                            TRUE,
1134                                                            GTK_PARAM_READWRITE));
1135
1136     /**
1137      * GtkTreeView:level-indentation:
1138      *
1139      * Extra indentation for each level.
1140      *
1141      * Since: 2.12
1142      */
1143     g_object_class_install_property (o_class,
1144                                      PROP_LEVEL_INDENTATION,
1145                                      g_param_spec_int ("level-indentation",
1146                                                        P_("Level Indentation"),
1147                                                        P_("Extra indentation for each level"),
1148                                                        0,
1149                                                        G_MAXINT,
1150                                                        0,
1151                                                        GTK_PARAM_READWRITE));
1152
1153     g_object_class_install_property (o_class,
1154                                      PROP_RUBBER_BANDING,
1155                                      g_param_spec_boolean ("rubber-banding",
1156                                                            P_("Rubber Banding"),
1157                                                            P_("Whether to enable selection of multiple items by dragging the mouse pointer"),
1158                                                            FALSE,
1159                                                            GTK_PARAM_READWRITE));
1160
1161     g_object_class_install_property (o_class,
1162                                      PROP_ENABLE_GRID_LINES,
1163                                      g_param_spec_enum ("enable-grid-lines",
1164                                                         P_("Enable Grid Lines"),
1165                                                         P_("Whether grid lines should be drawn in the tree view"),
1166                                                         GTK_TYPE_TREE_VIEW_GRID_LINES,
1167                                                         GTK_TREE_VIEW_GRID_LINES_NONE,
1168                                                         GTK_PARAM_READWRITE));
1169
1170     g_object_class_install_property (o_class,
1171                                      PROP_ENABLE_TREE_LINES,
1172                                      g_param_spec_boolean ("enable-tree-lines",
1173                                                            P_("Enable Tree Lines"),
1174                                                            P_("Whether tree lines should be drawn in the tree view"),
1175                                                            FALSE,
1176                                                            GTK_PARAM_READWRITE));
1177
1178     g_object_class_install_property (o_class,
1179                                      PROP_TOOLTIP_COLUMN,
1180                                      g_param_spec_int ("tooltip-column",
1181                                                        P_("Tooltip Column"),
1182                                                        P_("The column in the model containing the tooltip texts for the rows"),
1183                                                        -1,
1184                                                        G_MAXINT,
1185                                                        -1,
1186                                                        GTK_PARAM_READWRITE));
1187
1188   /* Style properties */
1189 #define _TREE_VIEW_EXPANDER_SIZE 14
1190 #define _TREE_VIEW_VERTICAL_SEPARATOR 2
1191 #define _TREE_VIEW_HORIZONTAL_SEPARATOR 2
1192
1193   gtk_widget_class_install_style_property (widget_class,
1194                                            g_param_spec_int ("expander-size",
1195                                                              P_("Expander Size"),
1196                                                              P_("Size of the expander arrow"),
1197                                                              0,
1198                                                              G_MAXINT,
1199                                                              _TREE_VIEW_EXPANDER_SIZE,
1200                                                              GTK_PARAM_READABLE));
1201
1202   gtk_widget_class_install_style_property (widget_class,
1203                                            g_param_spec_int ("vertical-separator",
1204                                                              P_("Vertical Separator Width"),
1205                                                              P_("Vertical space between cells.  Must be an even number"),
1206                                                              0,
1207                                                              G_MAXINT,
1208                                                              _TREE_VIEW_VERTICAL_SEPARATOR,
1209                                                              GTK_PARAM_READABLE));
1210
1211   gtk_widget_class_install_style_property (widget_class,
1212                                            g_param_spec_int ("horizontal-separator",
1213                                                              P_("Horizontal Separator Width"),
1214                                                              P_("Horizontal space between cells.  Must be an even number"),
1215                                                              0,
1216                                                              G_MAXINT,
1217                                                              _TREE_VIEW_HORIZONTAL_SEPARATOR,
1218                                                              GTK_PARAM_READABLE));
1219
1220   gtk_widget_class_install_style_property (widget_class,
1221                                            g_param_spec_boolean ("allow-rules",
1222                                                                  P_("Allow Rules"),
1223                                                                  P_("Allow drawing of alternating color rows"),
1224                                                                  TRUE,
1225                                                                  GTK_PARAM_READABLE));
1226
1227   gtk_widget_class_install_style_property (widget_class,
1228                                            g_param_spec_boolean ("indent-expanders",
1229                                                                  P_("Indent Expanders"),
1230                                                                  P_("Make the expanders indented"),
1231                                                                  TRUE,
1232                                                                  GTK_PARAM_READABLE));
1233
1234   gtk_widget_class_install_style_property (widget_class,
1235                                            g_param_spec_boxed ("even-row-color",
1236                                                                P_("Even Row Color"),
1237                                                                P_("Color to use for even rows"),
1238                                                                GDK_TYPE_COLOR,
1239                                                                GTK_PARAM_READABLE));
1240
1241   gtk_widget_class_install_style_property (widget_class,
1242                                            g_param_spec_boxed ("odd-row-color",
1243                                                                P_("Odd Row Color"),
1244                                                                P_("Color to use for odd rows"),
1245                                                                GDK_TYPE_COLOR,
1246                                                                GTK_PARAM_READABLE));
1247
1248   gtk_widget_class_install_style_property (widget_class,
1249                                            g_param_spec_int ("grid-line-width",
1250                                                              P_("Grid line width"),
1251                                                              P_("Width, in pixels, of the tree view grid lines"),
1252                                                              0, G_MAXINT, 1,
1253                                                              GTK_PARAM_READABLE));
1254
1255   gtk_widget_class_install_style_property (widget_class,
1256                                            g_param_spec_int ("tree-line-width",
1257                                                              P_("Tree line width"),
1258                                                              P_("Width, in pixels, of the tree view lines"),
1259                                                              0, G_MAXINT, 1,
1260                                                              GTK_PARAM_READABLE));
1261
1262   gtk_widget_class_install_style_property (widget_class,
1263                                            g_param_spec_string ("grid-line-pattern",
1264                                                                 P_("Grid line pattern"),
1265                                                                 P_("Dash pattern used to draw the tree view grid lines"),
1266                                                                 "\1\1",
1267                                                                 GTK_PARAM_READABLE));
1268
1269   gtk_widget_class_install_style_property (widget_class,
1270                                            g_param_spec_string ("tree-line-pattern",
1271                                                                 P_("Tree line pattern"),
1272                                                                 P_("Dash pattern used to draw the tree view lines"),
1273                                                                 "\1\1",
1274                                                                 GTK_PARAM_READABLE));
1275
1276   /* Signals */
1277   /**
1278    * GtkTreeView::row-activated:
1279    * @tree_view: the object on which the signal is emitted
1280    * @path: the #GtkTreePath for the activated row
1281    * @column: the #GtkTreeViewColumn in which the activation occurred
1282    *
1283    * The "row-activated" signal is emitted when the method
1284    * gtk_tree_view_row_activated() is called or the user double clicks
1285    * a treeview row. It is also emitted when a non-editable row is
1286    * selected and one of the keys: Space, Shift+Space, Return or
1287    * Enter is pressed.
1288    *
1289    * For selection handling refer to the <link linkend="TreeWidget">tree
1290    * widget conceptual overview</link> as well as #GtkTreeSelection.
1291    */
1292   tree_view_signals[ROW_ACTIVATED] =
1293     g_signal_new (I_("row-activated"),
1294                   G_TYPE_FROM_CLASS (o_class),
1295                   G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
1296                   G_STRUCT_OFFSET (GtkTreeViewClass, row_activated),
1297                   NULL, NULL,
1298                   _gtk_marshal_VOID__BOXED_OBJECT,
1299                   G_TYPE_NONE, 2,
1300                   GTK_TYPE_TREE_PATH,
1301                   GTK_TYPE_TREE_VIEW_COLUMN);
1302
1303   /**
1304    * GtkTreeView::test-expand-row:
1305    * @tree_view: the object on which the signal is emitted
1306    * @iter: the tree iter of the row to expand
1307    * @path: a tree path that points to the row
1308    *
1309    * The given row is about to be expanded (show its children nodes). Use this
1310    * signal if you need to control the expandability of individual rows.
1311    *
1312    * Returns: %FALSE to allow expansion, %TRUE to reject
1313    */
1314   tree_view_signals[TEST_EXPAND_ROW] =
1315     g_signal_new (I_("test-expand-row"),
1316                   G_TYPE_FROM_CLASS (o_class),
1317                   G_SIGNAL_RUN_LAST,
1318                   G_STRUCT_OFFSET (GtkTreeViewClass, test_expand_row),
1319                   _gtk_boolean_handled_accumulator, NULL,
1320                   _gtk_marshal_BOOLEAN__BOXED_BOXED,
1321                   G_TYPE_BOOLEAN, 2,
1322                   GTK_TYPE_TREE_ITER,
1323                   GTK_TYPE_TREE_PATH);
1324
1325   /**
1326    * GtkTreeView::test-collapse-row:
1327    * @tree_view: the object on which the signal is emitted
1328    * @iter: the tree iter of the row to collapse
1329    * @path: a tree path that points to the row
1330    *
1331    * The given row is about to be collapsed (hide its children nodes). Use this
1332    * signal if you need to control the collapsibility of individual rows.
1333    *
1334    * Returns: %FALSE to allow collapsing, %TRUE to reject
1335    */
1336   tree_view_signals[TEST_COLLAPSE_ROW] =
1337     g_signal_new (I_("test-collapse-row"),
1338                   G_TYPE_FROM_CLASS (o_class),
1339                   G_SIGNAL_RUN_LAST,
1340                   G_STRUCT_OFFSET (GtkTreeViewClass, test_collapse_row),
1341                   _gtk_boolean_handled_accumulator, NULL,
1342                   _gtk_marshal_BOOLEAN__BOXED_BOXED,
1343                   G_TYPE_BOOLEAN, 2,
1344                   GTK_TYPE_TREE_ITER,
1345                   GTK_TYPE_TREE_PATH);
1346
1347   /**
1348    * GtkTreeView::row-expanded:
1349    * @tree_view: the object on which the signal is emitted
1350    * @iter: the tree iter of the expanded row
1351    * @path: a tree path that points to the row
1352    *
1353    * The given row has been expanded (child nodes are shown).
1354    */
1355   tree_view_signals[ROW_EXPANDED] =
1356     g_signal_new (I_("row-expanded"),
1357                   G_TYPE_FROM_CLASS (o_class),
1358                   G_SIGNAL_RUN_LAST,
1359                   G_STRUCT_OFFSET (GtkTreeViewClass, row_expanded),
1360                   NULL, NULL,
1361                   _gtk_marshal_VOID__BOXED_BOXED,
1362                   G_TYPE_NONE, 2,
1363                   GTK_TYPE_TREE_ITER,
1364                   GTK_TYPE_TREE_PATH);
1365
1366   /**
1367    * GtkTreeView::row-collapsed:
1368    * @tree_view: the object on which the signal is emitted
1369    * @iter: the tree iter of the collapsed row
1370    * @path: a tree path that points to the row
1371    *
1372    * The given row has been collapsed (child nodes are hidden).
1373    */
1374   tree_view_signals[ROW_COLLAPSED] =
1375     g_signal_new (I_("row-collapsed"),
1376                   G_TYPE_FROM_CLASS (o_class),
1377                   G_SIGNAL_RUN_LAST,
1378                   G_STRUCT_OFFSET (GtkTreeViewClass, row_collapsed),
1379                   NULL, NULL,
1380                   _gtk_marshal_VOID__BOXED_BOXED,
1381                   G_TYPE_NONE, 2,
1382                   GTK_TYPE_TREE_ITER,
1383                   GTK_TYPE_TREE_PATH);
1384
1385   /**
1386    * GtkTreeView::columns-changed:
1387    * @tree_view: the object on which the signal is emitted
1388    *
1389    * The number of columns of the treeview has changed.
1390    */
1391   tree_view_signals[COLUMNS_CHANGED] =
1392     g_signal_new (I_("columns-changed"),
1393                   G_TYPE_FROM_CLASS (o_class),
1394                   G_SIGNAL_RUN_LAST,
1395                   G_STRUCT_OFFSET (GtkTreeViewClass, columns_changed),
1396                   NULL, NULL,
1397                   _gtk_marshal_VOID__VOID,
1398                   G_TYPE_NONE, 0);
1399
1400   /**
1401    * GtkTreeView::cursor-changed:
1402    * @tree_view: the object on which the signal is emitted
1403    *
1404    * The position of the cursor (focused cell) has changed.
1405    */
1406   tree_view_signals[CURSOR_CHANGED] =
1407     g_signal_new (I_("cursor-changed"),
1408                   G_TYPE_FROM_CLASS (o_class),
1409                   G_SIGNAL_RUN_LAST,
1410                   G_STRUCT_OFFSET (GtkTreeViewClass, cursor_changed),
1411                   NULL, NULL,
1412                   _gtk_marshal_VOID__VOID,
1413                   G_TYPE_NONE, 0);
1414
1415   tree_view_signals[MOVE_CURSOR] =
1416     g_signal_new (I_("move-cursor"),
1417                   G_TYPE_FROM_CLASS (o_class),
1418                   G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
1419                   G_STRUCT_OFFSET (GtkTreeViewClass, move_cursor),
1420                   NULL, NULL,
1421                   _gtk_marshal_BOOLEAN__ENUM_INT,
1422                   G_TYPE_BOOLEAN, 2,
1423                   GTK_TYPE_MOVEMENT_STEP,
1424                   G_TYPE_INT);
1425
1426   tree_view_signals[SELECT_ALL] =
1427     g_signal_new (I_("select-all"),
1428                   G_TYPE_FROM_CLASS (o_class),
1429                   G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
1430                   G_STRUCT_OFFSET (GtkTreeViewClass, select_all),
1431                   NULL, NULL,
1432                   _gtk_marshal_BOOLEAN__VOID,
1433                   G_TYPE_BOOLEAN, 0);
1434
1435   tree_view_signals[UNSELECT_ALL] =
1436     g_signal_new (I_("unselect-all"),
1437                   G_TYPE_FROM_CLASS (o_class),
1438                   G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
1439                   G_STRUCT_OFFSET (GtkTreeViewClass, unselect_all),
1440                   NULL, NULL,
1441                   _gtk_marshal_BOOLEAN__VOID,
1442                   G_TYPE_BOOLEAN, 0);
1443
1444   tree_view_signals[SELECT_CURSOR_ROW] =
1445     g_signal_new (I_("select-cursor-row"),
1446                   G_TYPE_FROM_CLASS (o_class),
1447                   G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
1448                   G_STRUCT_OFFSET (GtkTreeViewClass, select_cursor_row),
1449                   NULL, NULL,
1450                   _gtk_marshal_BOOLEAN__BOOLEAN,
1451                   G_TYPE_BOOLEAN, 1,
1452                   G_TYPE_BOOLEAN);
1453
1454   tree_view_signals[TOGGLE_CURSOR_ROW] =
1455     g_signal_new (I_("toggle-cursor-row"),
1456                   G_TYPE_FROM_CLASS (o_class),
1457                   G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
1458                   G_STRUCT_OFFSET (GtkTreeViewClass, toggle_cursor_row),
1459                   NULL, NULL,
1460                   _gtk_marshal_BOOLEAN__VOID,
1461                   G_TYPE_BOOLEAN, 0);
1462
1463   tree_view_signals[EXPAND_COLLAPSE_CURSOR_ROW] =
1464     g_signal_new (I_("expand-collapse-cursor-row"),
1465                   G_TYPE_FROM_CLASS (o_class),
1466                   G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
1467                   G_STRUCT_OFFSET (GtkTreeViewClass, expand_collapse_cursor_row),
1468                   NULL, NULL,
1469                   _gtk_marshal_BOOLEAN__BOOLEAN_BOOLEAN_BOOLEAN,
1470                   G_TYPE_BOOLEAN, 3,
1471                   G_TYPE_BOOLEAN,
1472                   G_TYPE_BOOLEAN,
1473                   G_TYPE_BOOLEAN);
1474
1475   tree_view_signals[SELECT_CURSOR_PARENT] =
1476     g_signal_new (I_("select-cursor-parent"),
1477                   G_TYPE_FROM_CLASS (o_class),
1478                   G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
1479                   G_STRUCT_OFFSET (GtkTreeViewClass, select_cursor_parent),
1480                   NULL, NULL,
1481                   _gtk_marshal_BOOLEAN__VOID,
1482                   G_TYPE_BOOLEAN, 0);
1483
1484   tree_view_signals[START_INTERACTIVE_SEARCH] =
1485     g_signal_new (I_("start-interactive-search"),
1486                   G_TYPE_FROM_CLASS (o_class),
1487                   G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
1488                   G_STRUCT_OFFSET (GtkTreeViewClass, start_interactive_search),
1489                   NULL, NULL,
1490                   _gtk_marshal_BOOLEAN__VOID,
1491                   G_TYPE_BOOLEAN, 0);
1492
1493   /* Key bindings */
1494   gtk_tree_view_add_move_binding (binding_set, GDK_KEY_Up, 0, TRUE,
1495                                   GTK_MOVEMENT_DISPLAY_LINES, -1);
1496   gtk_tree_view_add_move_binding (binding_set, GDK_KEY_KP_Up, 0, TRUE,
1497                                   GTK_MOVEMENT_DISPLAY_LINES, -1);
1498
1499   gtk_tree_view_add_move_binding (binding_set, GDK_KEY_Down, 0, TRUE,
1500                                   GTK_MOVEMENT_DISPLAY_LINES, 1);
1501   gtk_tree_view_add_move_binding (binding_set, GDK_KEY_KP_Down, 0, TRUE,
1502                                   GTK_MOVEMENT_DISPLAY_LINES, 1);
1503
1504   gtk_tree_view_add_move_binding (binding_set, GDK_KEY_p, GDK_CONTROL_MASK, FALSE,
1505                                   GTK_MOVEMENT_DISPLAY_LINES, -1);
1506
1507   gtk_tree_view_add_move_binding (binding_set, GDK_KEY_n, GDK_CONTROL_MASK, FALSE,
1508                                   GTK_MOVEMENT_DISPLAY_LINES, 1);
1509
1510   gtk_tree_view_add_move_binding (binding_set, GDK_KEY_Home, 0, TRUE,
1511                                   GTK_MOVEMENT_BUFFER_ENDS, -1);
1512   gtk_tree_view_add_move_binding (binding_set, GDK_KEY_KP_Home, 0, TRUE,
1513                                   GTK_MOVEMENT_BUFFER_ENDS, -1);
1514
1515   gtk_tree_view_add_move_binding (binding_set, GDK_KEY_End, 0, TRUE,
1516                                   GTK_MOVEMENT_BUFFER_ENDS, 1);
1517   gtk_tree_view_add_move_binding (binding_set, GDK_KEY_KP_End, 0, TRUE,
1518                                   GTK_MOVEMENT_BUFFER_ENDS, 1);
1519
1520   gtk_tree_view_add_move_binding (binding_set, GDK_KEY_Page_Up, 0, TRUE,
1521                                   GTK_MOVEMENT_PAGES, -1);
1522   gtk_tree_view_add_move_binding (binding_set, GDK_KEY_KP_Page_Up, 0, TRUE,
1523                                   GTK_MOVEMENT_PAGES, -1);
1524
1525   gtk_tree_view_add_move_binding (binding_set, GDK_KEY_Page_Down, 0, TRUE,
1526                                   GTK_MOVEMENT_PAGES, 1);
1527   gtk_tree_view_add_move_binding (binding_set, GDK_KEY_KP_Page_Down, 0, TRUE,
1528                                   GTK_MOVEMENT_PAGES, 1);
1529
1530
1531   gtk_binding_entry_add_signal (binding_set, GDK_KEY_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_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_KP_Right, 0, "move-cursor", 2,
1540                                 G_TYPE_ENUM, GTK_MOVEMENT_VISUAL_POSITIONS,
1541                                 G_TYPE_INT, 1);
1542
1543   gtk_binding_entry_add_signal (binding_set, GDK_KEY_KP_Left, 0, "move-cursor", 2,
1544                                 G_TYPE_ENUM, GTK_MOVEMENT_VISUAL_POSITIONS,
1545                                 G_TYPE_INT, -1);
1546
1547   gtk_binding_entry_add_signal (binding_set, GDK_KEY_Right, GDK_CONTROL_MASK,
1548                                 "move-cursor", 2,
1549                                 G_TYPE_ENUM, GTK_MOVEMENT_VISUAL_POSITIONS,
1550                                 G_TYPE_INT, 1);
1551
1552   gtk_binding_entry_add_signal (binding_set, GDK_KEY_Left, GDK_CONTROL_MASK,
1553                                 "move-cursor", 2,
1554                                 G_TYPE_ENUM, GTK_MOVEMENT_VISUAL_POSITIONS,
1555                                 G_TYPE_INT, -1);
1556
1557   gtk_binding_entry_add_signal (binding_set, GDK_KEY_KP_Right, GDK_CONTROL_MASK,
1558                                 "move-cursor", 2,
1559                                 G_TYPE_ENUM, GTK_MOVEMENT_VISUAL_POSITIONS,
1560                                 G_TYPE_INT, 1);
1561
1562   gtk_binding_entry_add_signal (binding_set, GDK_KEY_KP_Left, GDK_CONTROL_MASK,
1563                                 "move-cursor", 2,
1564                                 G_TYPE_ENUM, GTK_MOVEMENT_VISUAL_POSITIONS,
1565                                 G_TYPE_INT, -1);
1566
1567   gtk_binding_entry_add_signal (binding_set, GDK_KEY_space, GDK_CONTROL_MASK, "toggle-cursor-row", 0);
1568   gtk_binding_entry_add_signal (binding_set, GDK_KEY_KP_Space, GDK_CONTROL_MASK, "toggle-cursor-row", 0);
1569
1570   gtk_binding_entry_add_signal (binding_set, GDK_KEY_a, GDK_CONTROL_MASK, "select-all", 0);
1571   gtk_binding_entry_add_signal (binding_set, GDK_KEY_slash, GDK_CONTROL_MASK, "select-all", 0);
1572
1573   gtk_binding_entry_add_signal (binding_set, GDK_KEY_A, GDK_CONTROL_MASK | GDK_SHIFT_MASK, "unselect-all", 0);
1574   gtk_binding_entry_add_signal (binding_set, GDK_KEY_backslash, GDK_CONTROL_MASK, "unselect-all", 0);
1575
1576   gtk_binding_entry_add_signal (binding_set, GDK_KEY_space, GDK_SHIFT_MASK, "select-cursor-row", 1,
1577                                 G_TYPE_BOOLEAN, TRUE);
1578   gtk_binding_entry_add_signal (binding_set, GDK_KEY_KP_Space, GDK_SHIFT_MASK, "select-cursor-row", 1,
1579                                 G_TYPE_BOOLEAN, TRUE);
1580
1581   gtk_binding_entry_add_signal (binding_set, GDK_KEY_space, 0, "select-cursor-row", 1,
1582                                 G_TYPE_BOOLEAN, TRUE);
1583   gtk_binding_entry_add_signal (binding_set, GDK_KEY_KP_Space, 0, "select-cursor-row", 1,
1584                                 G_TYPE_BOOLEAN, TRUE);
1585   gtk_binding_entry_add_signal (binding_set, GDK_KEY_Return, 0, "select-cursor-row", 1,
1586                                 G_TYPE_BOOLEAN, TRUE);
1587   gtk_binding_entry_add_signal (binding_set, GDK_KEY_ISO_Enter, 0, "select-cursor-row", 1,
1588                                 G_TYPE_BOOLEAN, TRUE);
1589   gtk_binding_entry_add_signal (binding_set, GDK_KEY_KP_Enter, 0, "select-cursor-row", 1,
1590                                 G_TYPE_BOOLEAN, TRUE);
1591
1592   /* expand and collapse rows */
1593   gtk_binding_entry_add_signal (binding_set, GDK_KEY_plus, 0, "expand-collapse-cursor-row", 3,
1594                                 G_TYPE_BOOLEAN, TRUE,
1595                                 G_TYPE_BOOLEAN, TRUE,
1596                                 G_TYPE_BOOLEAN, FALSE);
1597
1598   gtk_binding_entry_add_signal (binding_set, GDK_KEY_asterisk, 0,
1599                                 "expand-collapse-cursor-row", 3,
1600                                 G_TYPE_BOOLEAN, TRUE,
1601                                 G_TYPE_BOOLEAN, TRUE,
1602                                 G_TYPE_BOOLEAN, TRUE);
1603   gtk_binding_entry_add_signal (binding_set, GDK_KEY_KP_Multiply, 0,
1604                                 "expand-collapse-cursor-row", 3,
1605                                 G_TYPE_BOOLEAN, TRUE,
1606                                 G_TYPE_BOOLEAN, TRUE,
1607                                 G_TYPE_BOOLEAN, TRUE);
1608
1609   gtk_binding_entry_add_signal (binding_set, GDK_KEY_slash, 0,
1610                                 "expand-collapse-cursor-row", 3,
1611                                 G_TYPE_BOOLEAN, TRUE,
1612                                 G_TYPE_BOOLEAN, FALSE,
1613                                 G_TYPE_BOOLEAN, FALSE);
1614   gtk_binding_entry_add_signal (binding_set, GDK_KEY_KP_Divide, 0,
1615                                 "expand-collapse-cursor-row", 3,
1616                                 G_TYPE_BOOLEAN, TRUE,
1617                                 G_TYPE_BOOLEAN, FALSE,
1618                                 G_TYPE_BOOLEAN, FALSE);
1619
1620   /* Not doable on US keyboards */
1621   gtk_binding_entry_add_signal (binding_set, GDK_KEY_plus, 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, 0, "expand-collapse-cursor-row", 3,
1626                                 G_TYPE_BOOLEAN, TRUE,
1627                                 G_TYPE_BOOLEAN, TRUE,
1628                                 G_TYPE_BOOLEAN, FALSE);
1629   gtk_binding_entry_add_signal (binding_set, GDK_KEY_KP_Add, GDK_SHIFT_MASK, "expand-collapse-cursor-row", 3,
1630                                 G_TYPE_BOOLEAN, TRUE,
1631                                 G_TYPE_BOOLEAN, TRUE,
1632                                 G_TYPE_BOOLEAN, TRUE);
1633   gtk_binding_entry_add_signal (binding_set, GDK_KEY_KP_Add, GDK_SHIFT_MASK, "expand-collapse-cursor-row", 3,
1634                                 G_TYPE_BOOLEAN, TRUE,
1635                                 G_TYPE_BOOLEAN, TRUE,
1636                                 G_TYPE_BOOLEAN, TRUE);
1637   gtk_binding_entry_add_signal (binding_set, GDK_KEY_Right, GDK_SHIFT_MASK,
1638                                 "expand-collapse-cursor-row", 3,
1639                                 G_TYPE_BOOLEAN, FALSE,
1640                                 G_TYPE_BOOLEAN, TRUE,
1641                                 G_TYPE_BOOLEAN, TRUE);
1642   gtk_binding_entry_add_signal (binding_set, GDK_KEY_KP_Right, GDK_SHIFT_MASK,
1643                                 "expand-collapse-cursor-row", 3,
1644                                 G_TYPE_BOOLEAN, FALSE,
1645                                 G_TYPE_BOOLEAN, TRUE,
1646                                 G_TYPE_BOOLEAN, TRUE);
1647   gtk_binding_entry_add_signal (binding_set, GDK_KEY_Right,
1648                                 GDK_CONTROL_MASK | GDK_SHIFT_MASK,
1649                                 "expand-collapse-cursor-row", 3,
1650                                 G_TYPE_BOOLEAN, FALSE,
1651                                 G_TYPE_BOOLEAN, TRUE,
1652                                 G_TYPE_BOOLEAN, TRUE);
1653   gtk_binding_entry_add_signal (binding_set, GDK_KEY_KP_Right,
1654                                 GDK_CONTROL_MASK | GDK_SHIFT_MASK,
1655                                 "expand-collapse-cursor-row", 3,
1656                                 G_TYPE_BOOLEAN, FALSE,
1657                                 G_TYPE_BOOLEAN, TRUE,
1658                                 G_TYPE_BOOLEAN, TRUE);
1659
1660   gtk_binding_entry_add_signal (binding_set, GDK_KEY_minus, 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_minus, 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_KP_Subtract, 0, "expand-collapse-cursor-row", 3,
1669                                 G_TYPE_BOOLEAN, TRUE,
1670                                 G_TYPE_BOOLEAN, FALSE,
1671                                 G_TYPE_BOOLEAN, FALSE);
1672   gtk_binding_entry_add_signal (binding_set, GDK_KEY_KP_Subtract, GDK_SHIFT_MASK, "expand-collapse-cursor-row", 3,
1673                                 G_TYPE_BOOLEAN, TRUE,
1674                                 G_TYPE_BOOLEAN, FALSE,
1675                                 G_TYPE_BOOLEAN, TRUE);
1676   gtk_binding_entry_add_signal (binding_set, GDK_KEY_Left, GDK_SHIFT_MASK,
1677                                 "expand-collapse-cursor-row", 3,
1678                                 G_TYPE_BOOLEAN, FALSE,
1679                                 G_TYPE_BOOLEAN, FALSE,
1680                                 G_TYPE_BOOLEAN, TRUE);
1681   gtk_binding_entry_add_signal (binding_set, GDK_KEY_KP_Left, GDK_SHIFT_MASK,
1682                                 "expand-collapse-cursor-row", 3,
1683                                 G_TYPE_BOOLEAN, FALSE,
1684                                 G_TYPE_BOOLEAN, FALSE,
1685                                 G_TYPE_BOOLEAN, TRUE);
1686   gtk_binding_entry_add_signal (binding_set, GDK_KEY_Left,
1687                                 GDK_CONTROL_MASK | GDK_SHIFT_MASK,
1688                                 "expand-collapse-cursor-row", 3,
1689                                 G_TYPE_BOOLEAN, FALSE,
1690                                 G_TYPE_BOOLEAN, FALSE,
1691                                 G_TYPE_BOOLEAN, TRUE);
1692   gtk_binding_entry_add_signal (binding_set, GDK_KEY_KP_Left,
1693                                 GDK_CONTROL_MASK | GDK_SHIFT_MASK,
1694                                 "expand-collapse-cursor-row", 3,
1695                                 G_TYPE_BOOLEAN, FALSE,
1696                                 G_TYPE_BOOLEAN, FALSE,
1697                                 G_TYPE_BOOLEAN, TRUE);
1698
1699   gtk_binding_entry_add_signal (binding_set, GDK_KEY_BackSpace, 0, "select-cursor-parent", 0);
1700   gtk_binding_entry_add_signal (binding_set, GDK_KEY_BackSpace, GDK_CONTROL_MASK, "select-cursor-parent", 0);
1701
1702   gtk_binding_entry_add_signal (binding_set, GDK_KEY_f, GDK_CONTROL_MASK, "start-interactive-search", 0);
1703
1704   gtk_binding_entry_add_signal (binding_set, GDK_KEY_F, GDK_CONTROL_MASK, "start-interactive-search", 0);
1705
1706   g_type_class_add_private (o_class, sizeof (GtkTreeViewPrivate));
1707
1708   gtk_widget_class_set_accessible_type (widget_class, GTK_TYPE_TREE_VIEW_ACCESSIBLE);
1709 }
1710
1711 static void
1712 gtk_tree_view_init (GtkTreeView *tree_view)
1713 {
1714   tree_view->priv = G_TYPE_INSTANCE_GET_PRIVATE (tree_view, GTK_TYPE_TREE_VIEW, GtkTreeViewPrivate);
1715
1716   gtk_widget_set_can_focus (GTK_WIDGET (tree_view), TRUE);
1717   gtk_widget_set_redraw_on_allocate (GTK_WIDGET (tree_view), FALSE);
1718
1719   tree_view->priv->show_expanders = TRUE;
1720   tree_view->priv->draw_keyfocus = TRUE;
1721   tree_view->priv->headers_visible = TRUE;
1722
1723   /* We need some padding */
1724   tree_view->priv->dy = 0;
1725   tree_view->priv->cursor_offset = 0;
1726   tree_view->priv->n_columns = 0;
1727   tree_view->priv->header_height = 1;
1728   tree_view->priv->x_drag = 0;
1729   tree_view->priv->drag_pos = -1;
1730   tree_view->priv->header_has_focus = FALSE;
1731   tree_view->priv->pressed_button = -1;
1732   tree_view->priv->press_start_x = -1;
1733   tree_view->priv->press_start_y = -1;
1734   tree_view->priv->reorderable = FALSE;
1735   tree_view->priv->presize_handler_timer = 0;
1736   tree_view->priv->scroll_sync_timer = 0;
1737   tree_view->priv->fixed_height = -1;
1738   tree_view->priv->fixed_height_mode = FALSE;
1739   tree_view->priv->fixed_height_check = 0;
1740   tree_view->priv->selection = _gtk_tree_selection_new_with_tree_view (tree_view);
1741   tree_view->priv->enable_search = TRUE;
1742   tree_view->priv->search_column = -1;
1743   tree_view->priv->search_position_func = gtk_tree_view_search_position_func;
1744   tree_view->priv->search_equal_func = gtk_tree_view_search_equal_func;
1745   tree_view->priv->search_custom_entry_set = FALSE;
1746   tree_view->priv->typeselect_flush_timeout = 0;
1747   tree_view->priv->init_hadjust_value = TRUE;
1748   tree_view->priv->width = 0;
1749
1750   tree_view->priv->hover_selection = FALSE;
1751   tree_view->priv->hover_expand = FALSE;
1752
1753   tree_view->priv->level_indentation = 0;
1754
1755   tree_view->priv->rubber_banding_enable = FALSE;
1756
1757   tree_view->priv->grid_lines = GTK_TREE_VIEW_GRID_LINES_NONE;
1758   tree_view->priv->tree_lines_enabled = FALSE;
1759
1760   tree_view->priv->tooltip_column = -1;
1761
1762   tree_view->priv->post_validation_flag = FALSE;
1763
1764   tree_view->priv->last_button_x = -1;
1765   tree_view->priv->last_button_y = -1;
1766
1767   tree_view->priv->event_last_x = -10000;
1768   tree_view->priv->event_last_y = -10000;
1769
1770   gtk_tree_view_do_set_vadjustment (tree_view, NULL);
1771   gtk_tree_view_do_set_hadjustment (tree_view, NULL);
1772
1773   gtk_style_context_add_class (gtk_widget_get_style_context (GTK_WIDGET (tree_view)),
1774                                GTK_STYLE_CLASS_VIEW);
1775 }
1776
1777 \f
1778
1779 /* GObject Methods
1780  */
1781
1782 static void
1783 gtk_tree_view_set_property (GObject         *object,
1784                             guint            prop_id,
1785                             const GValue    *value,
1786                             GParamSpec      *pspec)
1787 {
1788   GtkTreeView *tree_view;
1789
1790   tree_view = GTK_TREE_VIEW (object);
1791
1792   switch (prop_id)
1793     {
1794     case PROP_MODEL:
1795       gtk_tree_view_set_model (tree_view, g_value_get_object (value));
1796       break;
1797     case PROP_HADJUSTMENT:
1798       gtk_tree_view_do_set_hadjustment (tree_view, g_value_get_object (value));
1799       break;
1800     case PROP_VADJUSTMENT:
1801       gtk_tree_view_do_set_vadjustment (tree_view, g_value_get_object (value));
1802       break;
1803     case PROP_HSCROLL_POLICY:
1804       tree_view->priv->hscroll_policy = g_value_get_enum (value);
1805       gtk_widget_queue_resize (GTK_WIDGET (tree_view));
1806       break;
1807     case PROP_VSCROLL_POLICY:
1808       tree_view->priv->vscroll_policy = g_value_get_enum (value);
1809       gtk_widget_queue_resize (GTK_WIDGET (tree_view));
1810       break;
1811     case PROP_HEADERS_VISIBLE:
1812       gtk_tree_view_set_headers_visible (tree_view, g_value_get_boolean (value));
1813       break;
1814     case PROP_HEADERS_CLICKABLE:
1815       gtk_tree_view_set_headers_clickable (tree_view, g_value_get_boolean (value));
1816       break;
1817     case PROP_EXPANDER_COLUMN:
1818       gtk_tree_view_set_expander_column (tree_view, g_value_get_object (value));
1819       break;
1820     case PROP_REORDERABLE:
1821       gtk_tree_view_set_reorderable (tree_view, g_value_get_boolean (value));
1822       break;
1823     case PROP_RULES_HINT:
1824       gtk_tree_view_set_rules_hint (tree_view, g_value_get_boolean (value));
1825       break;
1826     case PROP_ENABLE_SEARCH:
1827       gtk_tree_view_set_enable_search (tree_view, g_value_get_boolean (value));
1828       break;
1829     case PROP_SEARCH_COLUMN:
1830       gtk_tree_view_set_search_column (tree_view, g_value_get_int (value));
1831       break;
1832     case PROP_FIXED_HEIGHT_MODE:
1833       gtk_tree_view_set_fixed_height_mode (tree_view, g_value_get_boolean (value));
1834       break;
1835     case PROP_HOVER_SELECTION:
1836       tree_view->priv->hover_selection = g_value_get_boolean (value);
1837       break;
1838     case PROP_HOVER_EXPAND:
1839       tree_view->priv->hover_expand = g_value_get_boolean (value);
1840       break;
1841     case PROP_SHOW_EXPANDERS:
1842       gtk_tree_view_set_show_expanders (tree_view, g_value_get_boolean (value));
1843       break;
1844     case PROP_LEVEL_INDENTATION:
1845       tree_view->priv->level_indentation = g_value_get_int (value);
1846       break;
1847     case PROP_RUBBER_BANDING:
1848       tree_view->priv->rubber_banding_enable = g_value_get_boolean (value);
1849       break;
1850     case PROP_ENABLE_GRID_LINES:
1851       gtk_tree_view_set_grid_lines (tree_view, g_value_get_enum (value));
1852       break;
1853     case PROP_ENABLE_TREE_LINES:
1854       gtk_tree_view_set_enable_tree_lines (tree_view, g_value_get_boolean (value));
1855       break;
1856     case PROP_TOOLTIP_COLUMN:
1857       gtk_tree_view_set_tooltip_column (tree_view, g_value_get_int (value));
1858       break;
1859     default:
1860       G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
1861       break;
1862     }
1863 }
1864
1865 static void
1866 gtk_tree_view_get_property (GObject    *object,
1867                             guint       prop_id,
1868                             GValue     *value,
1869                             GParamSpec *pspec)
1870 {
1871   GtkTreeView *tree_view;
1872
1873   tree_view = GTK_TREE_VIEW (object);
1874
1875   switch (prop_id)
1876     {
1877     case PROP_MODEL:
1878       g_value_set_object (value, tree_view->priv->model);
1879       break;
1880     case PROP_HADJUSTMENT:
1881       g_value_set_object (value, tree_view->priv->hadjustment);
1882       break;
1883     case PROP_VADJUSTMENT:
1884       g_value_set_object (value, tree_view->priv->vadjustment);
1885       break;
1886     case PROP_HSCROLL_POLICY:
1887       g_value_set_enum (value, tree_view->priv->hscroll_policy);
1888       break;
1889     case PROP_VSCROLL_POLICY:
1890       g_value_set_enum (value, tree_view->priv->vscroll_policy);
1891       break;
1892     case PROP_HEADERS_VISIBLE:
1893       g_value_set_boolean (value, gtk_tree_view_get_headers_visible (tree_view));
1894       break;
1895     case PROP_HEADERS_CLICKABLE:
1896       g_value_set_boolean (value, gtk_tree_view_get_headers_clickable (tree_view));
1897       break;
1898     case PROP_EXPANDER_COLUMN:
1899       g_value_set_object (value, tree_view->priv->expander_column);
1900       break;
1901     case PROP_REORDERABLE:
1902       g_value_set_boolean (value, tree_view->priv->reorderable);
1903       break;
1904     case PROP_RULES_HINT:
1905       g_value_set_boolean (value, tree_view->priv->has_rules);
1906       break;
1907     case PROP_ENABLE_SEARCH:
1908       g_value_set_boolean (value, tree_view->priv->enable_search);
1909       break;
1910     case PROP_SEARCH_COLUMN:
1911       g_value_set_int (value, tree_view->priv->search_column);
1912       break;
1913     case PROP_FIXED_HEIGHT_MODE:
1914       g_value_set_boolean (value, tree_view->priv->fixed_height_mode);
1915       break;
1916     case PROP_HOVER_SELECTION:
1917       g_value_set_boolean (value, tree_view->priv->hover_selection);
1918       break;
1919     case PROP_HOVER_EXPAND:
1920       g_value_set_boolean (value, tree_view->priv->hover_expand);
1921       break;
1922     case PROP_SHOW_EXPANDERS:
1923       g_value_set_boolean (value, tree_view->priv->show_expanders);
1924       break;
1925     case PROP_LEVEL_INDENTATION:
1926       g_value_set_int (value, tree_view->priv->level_indentation);
1927       break;
1928     case PROP_RUBBER_BANDING:
1929       g_value_set_boolean (value, tree_view->priv->rubber_banding_enable);
1930       break;
1931     case PROP_ENABLE_GRID_LINES:
1932       g_value_set_enum (value, tree_view->priv->grid_lines);
1933       break;
1934     case PROP_ENABLE_TREE_LINES:
1935       g_value_set_boolean (value, tree_view->priv->tree_lines_enabled);
1936       break;
1937     case PROP_TOOLTIP_COLUMN:
1938       g_value_set_int (value, tree_view->priv->tooltip_column);
1939       break;
1940     default:
1941       G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
1942       break;
1943     }
1944 }
1945
1946 static void
1947 gtk_tree_view_finalize (GObject *object)
1948 {
1949   G_OBJECT_CLASS (gtk_tree_view_parent_class)->finalize (object);
1950 }
1951
1952
1953 static GtkBuildableIface *parent_buildable_iface;
1954
1955 static void
1956 gtk_tree_view_buildable_init (GtkBuildableIface *iface)
1957 {
1958   parent_buildable_iface = g_type_interface_peek_parent (iface);
1959   iface->add_child = gtk_tree_view_buildable_add_child;
1960   iface->get_internal_child = gtk_tree_view_buildable_get_internal_child;
1961 }
1962
1963 static void
1964 gtk_tree_view_buildable_add_child (GtkBuildable *tree_view,
1965                                    GtkBuilder  *builder,
1966                                    GObject     *child,
1967                                    const gchar *type)
1968 {
1969   gtk_tree_view_append_column (GTK_TREE_VIEW (tree_view), GTK_TREE_VIEW_COLUMN (child));
1970 }
1971
1972 static GObject *
1973 gtk_tree_view_buildable_get_internal_child (GtkBuildable      *buildable,
1974                                             GtkBuilder        *builder,
1975                                             const gchar       *childname)
1976 {
1977     if (strcmp (childname, "selection") == 0)
1978       return G_OBJECT (GTK_TREE_VIEW (buildable)->priv->selection);
1979
1980     return parent_buildable_iface->get_internal_child (buildable,
1981                                                        builder,
1982                                                        childname);
1983 }
1984
1985 /* GtkWidget Methods
1986  */
1987
1988 static void
1989 gtk_tree_view_free_rbtree (GtkTreeView *tree_view)
1990 {
1991   _gtk_rbtree_free (tree_view->priv->tree);
1992
1993   tree_view->priv->tree = NULL;
1994   tree_view->priv->button_pressed_node = NULL;
1995   tree_view->priv->button_pressed_tree = NULL;
1996   tree_view->priv->prelight_tree = NULL;
1997   tree_view->priv->prelight_node = NULL;
1998   tree_view->priv->expanded_collapsed_node = NULL;
1999   tree_view->priv->expanded_collapsed_tree = NULL;
2000 }
2001
2002 static void
2003 gtk_tree_view_destroy (GtkWidget *widget)
2004 {
2005   GtkTreeView *tree_view = GTK_TREE_VIEW (widget);
2006   GList *list;
2007
2008   gtk_tree_view_stop_editing (tree_view, TRUE);
2009
2010   if (tree_view->priv->columns != NULL)
2011     {
2012       list = tree_view->priv->columns;
2013       while (list)
2014         {
2015           GtkTreeViewColumn *column;
2016           column = GTK_TREE_VIEW_COLUMN (list->data);
2017           list = list->next;
2018           gtk_tree_view_remove_column (tree_view, column);
2019         }
2020       tree_view->priv->columns = NULL;
2021     }
2022
2023   if (tree_view->priv->tree != NULL)
2024     {
2025       gtk_tree_view_unref_and_check_selection_tree (tree_view, tree_view->priv->tree);
2026
2027       gtk_tree_view_free_rbtree (tree_view);
2028     }
2029
2030   if (tree_view->priv->selection != NULL)
2031     {
2032       _gtk_tree_selection_set_tree_view (tree_view->priv->selection, NULL);
2033       g_object_unref (tree_view->priv->selection);
2034       tree_view->priv->selection = NULL;
2035     }
2036
2037   if (tree_view->priv->scroll_to_path != NULL)
2038     {
2039       gtk_tree_row_reference_free (tree_view->priv->scroll_to_path);
2040       tree_view->priv->scroll_to_path = NULL;
2041     }
2042
2043   if (tree_view->priv->drag_dest_row != NULL)
2044     {
2045       gtk_tree_row_reference_free (tree_view->priv->drag_dest_row);
2046       tree_view->priv->drag_dest_row = NULL;
2047     }
2048
2049   if (tree_view->priv->top_row != NULL)
2050     {
2051       gtk_tree_row_reference_free (tree_view->priv->top_row);
2052       tree_view->priv->top_row = NULL;
2053     }
2054
2055   if (tree_view->priv->column_drop_func_data &&
2056       tree_view->priv->column_drop_func_data_destroy)
2057     {
2058       tree_view->priv->column_drop_func_data_destroy (tree_view->priv->column_drop_func_data);
2059       tree_view->priv->column_drop_func_data = NULL;
2060     }
2061
2062   if (tree_view->priv->destroy_count_destroy &&
2063       tree_view->priv->destroy_count_data)
2064     {
2065       tree_view->priv->destroy_count_destroy (tree_view->priv->destroy_count_data);
2066       tree_view->priv->destroy_count_data = NULL;
2067     }
2068
2069   gtk_tree_row_reference_free (tree_view->priv->anchor);
2070   tree_view->priv->anchor = NULL;
2071
2072   /* destroy interactive search dialog */
2073   if (tree_view->priv->search_window)
2074     {
2075       gtk_widget_destroy (tree_view->priv->search_window);
2076       tree_view->priv->search_window = NULL;
2077       tree_view->priv->search_entry = NULL;
2078       if (tree_view->priv->typeselect_flush_timeout)
2079         {
2080           g_source_remove (tree_view->priv->typeselect_flush_timeout);
2081           tree_view->priv->typeselect_flush_timeout = 0;
2082         }
2083     }
2084
2085   if (tree_view->priv->search_destroy && tree_view->priv->search_user_data)
2086     {
2087       tree_view->priv->search_destroy (tree_view->priv->search_user_data);
2088       tree_view->priv->search_user_data = NULL;
2089     }
2090
2091   if (tree_view->priv->search_position_destroy && tree_view->priv->search_position_user_data)
2092     {
2093       tree_view->priv->search_position_destroy (tree_view->priv->search_position_user_data);
2094       tree_view->priv->search_position_user_data = NULL;
2095     }
2096
2097   if (tree_view->priv->row_separator_destroy && tree_view->priv->row_separator_data)
2098     {
2099       tree_view->priv->row_separator_destroy (tree_view->priv->row_separator_data);
2100       tree_view->priv->row_separator_data = NULL;
2101     }
2102
2103   gtk_tree_view_set_model (tree_view, NULL);
2104
2105   if (tree_view->priv->hadjustment)
2106     {
2107       g_object_unref (tree_view->priv->hadjustment);
2108       tree_view->priv->hadjustment = NULL;
2109     }
2110   if (tree_view->priv->vadjustment)
2111     {
2112       g_object_unref (tree_view->priv->vadjustment);
2113       tree_view->priv->vadjustment = NULL;
2114     }
2115
2116   GTK_WIDGET_CLASS (gtk_tree_view_parent_class)->destroy (widget);
2117 }
2118
2119 /* GtkWidget::map helper */
2120 static void
2121 gtk_tree_view_map_buttons (GtkTreeView *tree_view)
2122 {
2123   GList *list;
2124
2125   g_return_if_fail (gtk_widget_get_mapped (GTK_WIDGET (tree_view)));
2126
2127   if (tree_view->priv->headers_visible)
2128     {
2129       GtkTreeViewColumn *column;
2130       GtkWidget         *button;
2131       GdkWindow         *window;
2132
2133       for (list = tree_view->priv->columns; list; list = list->next)
2134         {
2135           column = list->data;
2136           button = gtk_tree_view_column_get_button (column);
2137
2138           if (gtk_tree_view_column_get_visible (column) && button)
2139             gtk_widget_show_now (button);
2140
2141           if (gtk_widget_get_visible (button) &&
2142               !gtk_widget_get_mapped (button))
2143             gtk_widget_map (button);
2144         }
2145       for (list = tree_view->priv->columns; list; list = list->next)
2146         {
2147           column = list->data;
2148           if (gtk_tree_view_column_get_visible (column) == FALSE)
2149             continue;
2150
2151           window = _gtk_tree_view_column_get_window (column);
2152           if (gtk_tree_view_column_get_resizable (column))
2153             {
2154               gdk_window_raise (window);
2155               gdk_window_show (window);
2156             }
2157           else
2158             gdk_window_hide (window);
2159         }
2160       gdk_window_show (tree_view->priv->header_window);
2161     }
2162 }
2163
2164 static void
2165 gtk_tree_view_map (GtkWidget *widget)
2166 {
2167   GtkTreeView *tree_view = GTK_TREE_VIEW (widget);
2168   GList *tmp_list;
2169
2170   gtk_widget_set_mapped (widget, TRUE);
2171
2172   tmp_list = tree_view->priv->children;
2173   while (tmp_list)
2174     {
2175       GtkTreeViewChild *child = tmp_list->data;
2176       tmp_list = tmp_list->next;
2177
2178       if (gtk_widget_get_visible (child->widget))
2179         {
2180           if (!gtk_widget_get_mapped (child->widget))
2181             gtk_widget_map (child->widget);
2182         }
2183     }
2184   gdk_window_show (tree_view->priv->bin_window);
2185
2186   gtk_tree_view_map_buttons (tree_view);
2187
2188   gdk_window_show (gtk_widget_get_window (widget));
2189 }
2190
2191 static void
2192 gtk_tree_view_ensure_background (GtkTreeView *tree_view)
2193 {
2194   GtkStyleContext *context;
2195
2196   context = gtk_widget_get_style_context (GTK_WIDGET (tree_view));
2197   gtk_style_context_set_background (context, tree_view->priv->header_window);
2198 }
2199
2200 static void
2201 gtk_tree_view_realize (GtkWidget *widget)
2202 {
2203   GtkAllocation allocation;
2204   GtkTreeView *tree_view = GTK_TREE_VIEW (widget);
2205   GdkWindow *window;
2206   GdkWindowAttr attributes;
2207   GList *tmp_list;
2208   gint attributes_mask;
2209
2210   gtk_widget_set_realized (widget, TRUE);
2211
2212   gtk_widget_get_allocation (widget, &allocation);
2213
2214   /* Make the main, clipping window */
2215   attributes.window_type = GDK_WINDOW_CHILD;
2216   attributes.x = allocation.x;
2217   attributes.y = allocation.y;
2218   attributes.width = allocation.width;
2219   attributes.height = allocation.height;
2220   attributes.wclass = GDK_INPUT_OUTPUT;
2221   attributes.visual = gtk_widget_get_visual (widget);
2222   attributes.event_mask = GDK_VISIBILITY_NOTIFY_MASK;
2223
2224   attributes_mask = GDK_WA_X | GDK_WA_Y | GDK_WA_VISUAL;
2225
2226   window = gdk_window_new (gtk_widget_get_parent_window (widget),
2227                            &attributes, attributes_mask);
2228   gtk_widget_set_window (widget, window);
2229   gdk_window_set_user_data (window, widget);
2230
2231   gtk_widget_get_allocation (widget, &allocation);
2232
2233   /* Make the window for the tree */
2234   attributes.x = 0;
2235   attributes.y = gtk_tree_view_get_effective_header_height (tree_view);
2236   attributes.width = MAX (tree_view->priv->width, allocation.width);
2237   attributes.height = allocation.height;
2238   attributes.event_mask = (GDK_EXPOSURE_MASK |
2239                            GDK_SCROLL_MASK |
2240                            GDK_SMOOTH_SCROLL_MASK |
2241                            GDK_POINTER_MOTION_MASK |
2242                            GDK_ENTER_NOTIFY_MASK |
2243                            GDK_LEAVE_NOTIFY_MASK |
2244                            GDK_BUTTON_PRESS_MASK |
2245                            GDK_BUTTON_RELEASE_MASK |
2246                            gtk_widget_get_events (widget));
2247
2248   tree_view->priv->bin_window = gdk_window_new (window,
2249                                                 &attributes, attributes_mask);
2250   gdk_window_set_user_data (tree_view->priv->bin_window, widget);
2251
2252   gtk_widget_get_allocation (widget, &allocation);
2253
2254   /* Make the column header window */
2255   attributes.x = 0;
2256   attributes.y = 0;
2257   attributes.width = MAX (tree_view->priv->width, allocation.width);
2258   attributes.height = tree_view->priv->header_height;
2259   attributes.event_mask = (GDK_EXPOSURE_MASK |
2260                            GDK_SCROLL_MASK |
2261                            GDK_ENTER_NOTIFY_MASK |
2262                            GDK_LEAVE_NOTIFY_MASK |
2263                            GDK_BUTTON_PRESS_MASK |
2264                            GDK_BUTTON_RELEASE_MASK |
2265                            GDK_KEY_PRESS_MASK |
2266                            GDK_KEY_RELEASE_MASK |
2267                            gtk_widget_get_events (widget));
2268
2269   tree_view->priv->header_window = gdk_window_new (window,
2270                                                    &attributes, attributes_mask);
2271   gdk_window_set_user_data (tree_view->priv->header_window, widget);
2272
2273   gtk_tree_view_ensure_background (tree_view);
2274
2275   tmp_list = tree_view->priv->children;
2276   while (tmp_list)
2277     {
2278       GtkTreeViewChild *child = tmp_list->data;
2279       tmp_list = tmp_list->next;
2280
2281       gtk_widget_set_parent_window (child->widget, tree_view->priv->bin_window);
2282     }
2283
2284   for (tmp_list = tree_view->priv->columns; tmp_list; tmp_list = tmp_list->next)
2285     _gtk_tree_view_column_realize_button (GTK_TREE_VIEW_COLUMN (tmp_list->data));
2286
2287   /* Need to call those here, since they create GCs */
2288   gtk_tree_view_set_grid_lines (tree_view, tree_view->priv->grid_lines);
2289   gtk_tree_view_set_enable_tree_lines (tree_view, tree_view->priv->tree_lines_enabled);
2290
2291   install_presize_handler (tree_view);
2292 }
2293
2294 static void
2295 gtk_tree_view_unrealize (GtkWidget *widget)
2296 {
2297   GtkTreeView *tree_view = GTK_TREE_VIEW (widget);
2298   GtkTreeViewPrivate *priv = tree_view->priv;
2299   GList *list;
2300
2301   if (priv->scroll_timeout != 0)
2302     {
2303       g_source_remove (priv->scroll_timeout);
2304       priv->scroll_timeout = 0;
2305     }
2306
2307   if (priv->auto_expand_timeout != 0)
2308     {
2309       g_source_remove (priv->auto_expand_timeout);
2310       priv->auto_expand_timeout = 0;
2311     }
2312
2313   if (priv->open_dest_timeout != 0)
2314     {
2315       g_source_remove (priv->open_dest_timeout);
2316       priv->open_dest_timeout = 0;
2317     }
2318
2319   if (priv->presize_handler_timer != 0)
2320     {
2321       g_source_remove (priv->presize_handler_timer);
2322       priv->presize_handler_timer = 0;
2323     }
2324
2325   if (priv->validate_rows_timer != 0)
2326     {
2327       g_source_remove (priv->validate_rows_timer);
2328       priv->validate_rows_timer = 0;
2329     }
2330
2331   if (priv->scroll_sync_timer != 0)
2332     {
2333       g_source_remove (priv->scroll_sync_timer);
2334       priv->scroll_sync_timer = 0;
2335     }
2336
2337   if (priv->typeselect_flush_timeout)
2338     {
2339       g_source_remove (priv->typeselect_flush_timeout);
2340       priv->typeselect_flush_timeout = 0;
2341     }
2342
2343   for (list = priv->columns; list; list = list->next)
2344     _gtk_tree_view_column_unrealize_button (GTK_TREE_VIEW_COLUMN (list->data));
2345
2346   gdk_window_set_user_data (priv->bin_window, NULL);
2347   gdk_window_destroy (priv->bin_window);
2348   priv->bin_window = NULL;
2349
2350   gdk_window_set_user_data (priv->header_window, NULL);
2351   gdk_window_destroy (priv->header_window);
2352   priv->header_window = NULL;
2353
2354   if (priv->drag_window)
2355     {
2356       gdk_window_set_user_data (priv->drag_window, NULL);
2357       gdk_window_destroy (priv->drag_window);
2358       priv->drag_window = NULL;
2359     }
2360
2361   if (priv->drag_highlight_window)
2362     {
2363       gdk_window_set_user_data (priv->drag_highlight_window, NULL);
2364       gdk_window_destroy (priv->drag_highlight_window);
2365       priv->drag_highlight_window = NULL;
2366     }
2367
2368   GTK_WIDGET_CLASS (gtk_tree_view_parent_class)->unrealize (widget);
2369 }
2370
2371 /* GtkWidget::size_request helper */
2372 static void
2373 gtk_tree_view_size_request_columns (GtkTreeView *tree_view)
2374 {
2375   GList *list;
2376
2377   tree_view->priv->header_height = 0;
2378
2379   for (list = tree_view->priv->columns; list; list = list->next)
2380     {
2381       GtkRequisition     requisition;
2382       GtkTreeViewColumn *column = list->data;
2383       GtkWidget         *button = gtk_tree_view_column_get_button (column);
2384
2385       if (button == NULL)
2386         continue;
2387
2388       gtk_widget_get_preferred_size (button, &requisition, NULL);
2389       tree_view->priv->header_height = MAX (tree_view->priv->header_height, requisition.height);
2390     }
2391 }
2392
2393
2394 /* Called only by ::size_request */
2395 static void
2396 gtk_tree_view_update_size (GtkTreeView *tree_view)
2397 {
2398   GList *list;
2399   GtkTreeViewColumn *column;
2400   gint i;
2401
2402   if (tree_view->priv->model == NULL)
2403     {
2404       tree_view->priv->width = 0;
2405       tree_view->priv->prev_width = 0;
2406       tree_view->priv->height = 0;
2407       return;
2408     }
2409
2410   tree_view->priv->prev_width = tree_view->priv->width;
2411   tree_view->priv->width = 0;
2412
2413   /* keep this in sync with size_allocate below */
2414   for (list = tree_view->priv->columns, i = 0; list; list = list->next, i++)
2415     {
2416       column = list->data;
2417       if (!gtk_tree_view_column_get_visible (column))
2418         continue;
2419
2420       tree_view->priv->width += _gtk_tree_view_column_request_width (column);
2421     }
2422
2423   if (tree_view->priv->tree == NULL)
2424     tree_view->priv->height = 0;
2425   else
2426     tree_view->priv->height = tree_view->priv->tree->root->offset;
2427 }
2428
2429 static void
2430 gtk_tree_view_size_request (GtkWidget      *widget,
2431                             GtkRequisition *requisition,
2432                             gboolean        may_validate)
2433 {
2434   GtkTreeView *tree_view = GTK_TREE_VIEW (widget);
2435
2436   if (may_validate)
2437     {
2438       /* we validate some rows initially just to make sure we have some size.
2439        * In practice, with a lot of static lists, this should get a good width.
2440        */
2441       do_validate_rows (tree_view, FALSE);
2442     }
2443
2444   gtk_tree_view_size_request_columns (tree_view);
2445   gtk_tree_view_update_size (GTK_TREE_VIEW (widget));
2446
2447   requisition->width = tree_view->priv->width;
2448   requisition->height = tree_view->priv->height + gtk_tree_view_get_effective_header_height (tree_view);
2449 }
2450
2451 static void
2452 gtk_tree_view_get_preferred_width (GtkWidget *widget,
2453                                    gint      *minimum,
2454                                    gint      *natural)
2455 {
2456   GtkRequisition requisition;
2457
2458   gtk_tree_view_size_request (widget, &requisition, TRUE);
2459
2460   *minimum = *natural = requisition.width;
2461 }
2462
2463 static void
2464 gtk_tree_view_get_preferred_height (GtkWidget *widget,
2465                                     gint      *minimum,
2466                                     gint      *natural)
2467 {
2468   GtkRequisition requisition;
2469
2470   gtk_tree_view_size_request (widget, &requisition, TRUE);
2471
2472   *minimum = *natural = requisition.height;
2473 }
2474
2475 static int
2476 gtk_tree_view_calculate_width_before_expander (GtkTreeView *tree_view)
2477 {
2478   int width = 0;
2479   GList *list;
2480   gboolean rtl;
2481
2482   rtl = (gtk_widget_get_direction (GTK_WIDGET (tree_view)) == GTK_TEXT_DIR_RTL);
2483   for (list = (rtl ? g_list_last (tree_view->priv->columns) : g_list_first (tree_view->priv->columns));
2484        list->data != tree_view->priv->expander_column;
2485        list = (rtl ? list->prev : list->next))
2486     {
2487       GtkTreeViewColumn *column = list->data;
2488
2489       width += gtk_tree_view_column_get_width (column);
2490     }
2491
2492   return width;
2493 }
2494
2495 /* GtkWidget::size_allocate helper */
2496 static void
2497 gtk_tree_view_size_allocate_columns (GtkWidget *widget,
2498                                      gboolean  *width_changed)
2499 {
2500   GtkTreeView *tree_view;
2501   GList *list, *first_column, *last_column;
2502   GtkTreeViewColumn *column;
2503   GtkAllocation widget_allocation;
2504   gint width = 0;
2505   gint extra, extra_per_column, extra_for_last;
2506   gint full_requested_width = 0;
2507   gint number_of_expand_columns = 0;
2508   gboolean rtl;
2509   gboolean update_expand;
2510
2511   tree_view = GTK_TREE_VIEW (widget);
2512
2513   for (last_column = g_list_last (tree_view->priv->columns);
2514        last_column &&
2515        !(gtk_tree_view_column_get_visible (GTK_TREE_VIEW_COLUMN (last_column->data)));
2516        last_column = last_column->prev)
2517     ;
2518   if (last_column == NULL)
2519     return;
2520
2521   for (first_column = g_list_first (tree_view->priv->columns);
2522        first_column &&
2523        !(gtk_tree_view_column_get_visible (GTK_TREE_VIEW_COLUMN (first_column->data)));
2524        first_column = first_column->next)
2525     ;
2526
2527   rtl = (gtk_widget_get_direction (widget) == GTK_TEXT_DIR_RTL);
2528
2529   /* find out how many extra space and expandable columns we have */
2530   for (list = tree_view->priv->columns; list != last_column->next; list = list->next)
2531     {
2532       column = (GtkTreeViewColumn *)list->data;
2533
2534       if (!gtk_tree_view_column_get_visible (column))
2535         continue;
2536
2537       full_requested_width += _gtk_tree_view_column_request_width (column);
2538
2539       if (gtk_tree_view_column_get_expand (column))
2540         number_of_expand_columns++;
2541     }
2542
2543   /* Only update the expand value if the width of the widget has changed,
2544    * or the number of expand columns has changed, or if there are no expand
2545    * columns, or if we didn't have an size-allocation yet after the
2546    * last validated node.
2547    */
2548   update_expand = (width_changed && *width_changed == TRUE)
2549       || number_of_expand_columns != tree_view->priv->last_number_of_expand_columns
2550       || number_of_expand_columns == 0
2551       || tree_view->priv->post_validation_flag == TRUE;
2552
2553   tree_view->priv->post_validation_flag = FALSE;
2554
2555   gtk_widget_get_allocation (widget, &widget_allocation);
2556   if (!update_expand)
2557     {
2558       extra = tree_view->priv->last_extra_space;
2559       extra_for_last = MAX (widget_allocation.width - full_requested_width - extra, 0);
2560     }
2561   else
2562     {
2563       extra = MAX (widget_allocation.width - full_requested_width, 0);
2564       extra_for_last = 0;
2565
2566       tree_view->priv->last_extra_space = extra;
2567     }
2568
2569   if (number_of_expand_columns > 0)
2570     extra_per_column = extra/number_of_expand_columns;
2571   else
2572     extra_per_column = 0;
2573
2574   if (update_expand)
2575     {
2576       tree_view->priv->last_extra_space_per_column = extra_per_column;
2577       tree_view->priv->last_number_of_expand_columns = number_of_expand_columns;
2578     }
2579
2580   for (list = (rtl ? last_column : first_column);
2581        list != (rtl ? first_column->prev : last_column->next);
2582        list = (rtl ? list->prev : list->next))
2583     {
2584       gint column_width;
2585
2586       column = list->data;
2587
2588       if (!gtk_tree_view_column_get_visible (column))
2589         continue;
2590
2591       /* We need to handle the dragged button specially.
2592        */
2593       if (column == tree_view->priv->drag_column)
2594         {
2595           GtkAllocation drag_allocation;
2596           GtkWidget    *button;
2597
2598           button = gtk_tree_view_column_get_button (tree_view->priv->drag_column);
2599
2600           drag_allocation.x = 0;
2601           drag_allocation.y = 0;
2602           drag_allocation.width = gdk_window_get_width (tree_view->priv->drag_window);
2603           drag_allocation.height = gdk_window_get_height (tree_view->priv->drag_window);
2604           gtk_widget_size_allocate (button, &drag_allocation);
2605           width += drag_allocation.width;
2606           continue;
2607         }
2608
2609       column_width = _gtk_tree_view_column_request_width (column);
2610
2611       if (gtk_tree_view_column_get_expand (column))
2612         {
2613           if (number_of_expand_columns == 1)
2614             {
2615               /* We add the remander to the last column as
2616                * */
2617               column_width += extra;
2618             }
2619           else
2620             {
2621               column_width += extra_per_column;
2622               extra -= extra_per_column;
2623               number_of_expand_columns --;
2624             }
2625         }
2626       else if (number_of_expand_columns == 0 &&
2627                list == last_column)
2628         {
2629           column_width += extra;
2630         }
2631
2632       /* In addition to expand, the last column can get even more
2633        * extra space so all available space is filled up.
2634        */
2635       if (extra_for_last > 0 && list == last_column)
2636         column_width += extra_for_last;
2637
2638       _gtk_tree_view_column_allocate (column, width, column_width);
2639
2640       width += column_width;
2641     }
2642
2643   /* We change the width here.  The user might have been resizing columns,
2644    * which changes the total width of the tree view.  This is of
2645    * importance for getting the horizontal scroll bar right.
2646    */
2647   if (tree_view->priv->width != width)
2648     {
2649       tree_view->priv->width = width;
2650       if (width_changed)
2651         *width_changed = TRUE;
2652     }
2653 }
2654
2655
2656 static void
2657 gtk_tree_view_size_allocate (GtkWidget     *widget,
2658                              GtkAllocation *allocation)
2659 {
2660   GtkAllocation widget_allocation;
2661   GtkTreeView *tree_view = GTK_TREE_VIEW (widget);
2662   GList *tmp_list;
2663   gboolean width_changed = FALSE;
2664   gint old_width;
2665
2666   gtk_widget_get_allocation (widget, &widget_allocation);
2667   old_width = widget_allocation.width;
2668   if (allocation->width != widget_allocation.width)
2669     width_changed = TRUE;
2670
2671   gtk_widget_set_allocation (widget, allocation);
2672
2673   tmp_list = tree_view->priv->children;
2674
2675   while (tmp_list)
2676     {
2677       GtkAllocation allocation;
2678
2679       GtkTreeViewChild *child = tmp_list->data;
2680       tmp_list = tmp_list->next;
2681
2682       /* totally ignore our child's requisition */
2683       allocation.x = child->x;
2684       allocation.y = child->y;
2685       allocation.width = child->width;
2686       allocation.height = child->height;
2687       gtk_widget_size_allocate (child->widget, &allocation);
2688     }
2689
2690   /* We size-allocate the columns first because the width of the
2691    * tree view (used in updating the adjustments below) might change.
2692    */
2693   gtk_tree_view_size_allocate_columns (widget, &width_changed);
2694
2695   g_object_freeze_notify (G_OBJECT (tree_view->priv->hadjustment));
2696   gtk_adjustment_set_page_size (tree_view->priv->hadjustment,
2697                                 allocation->width);
2698   gtk_adjustment_set_page_increment (tree_view->priv->hadjustment,
2699                                      allocation->width * 0.9);
2700   gtk_adjustment_set_step_increment (tree_view->priv->hadjustment,
2701                                      allocation->width * 0.1);
2702   gtk_adjustment_set_lower (tree_view->priv->hadjustment, 0);
2703   gtk_adjustment_set_upper (tree_view->priv->hadjustment,
2704                             MAX (gtk_adjustment_get_page_size (tree_view->priv->hadjustment),
2705                                  tree_view->priv->width));
2706   g_object_thaw_notify (G_OBJECT (tree_view->priv->hadjustment));
2707
2708   if (gtk_widget_get_direction(widget) == GTK_TEXT_DIR_RTL)
2709     {
2710       if (allocation->width < tree_view->priv->width)
2711         {
2712           if (tree_view->priv->init_hadjust_value)
2713             {
2714               gtk_adjustment_set_value (tree_view->priv->hadjustment,
2715                                         MAX (tree_view->priv->width -
2716                                              allocation->width, 0));
2717               tree_view->priv->init_hadjust_value = FALSE;
2718             }
2719           else if (allocation->width != old_width)
2720             {
2721               gtk_adjustment_set_value (tree_view->priv->hadjustment,
2722                                         CLAMP (gtk_adjustment_get_value (tree_view->priv->hadjustment) - allocation->width + old_width,
2723                                                0,
2724                                                tree_view->priv->width - allocation->width));
2725             }
2726           else
2727             gtk_adjustment_set_value (tree_view->priv->hadjustment,
2728                                       CLAMP (tree_view->priv->width - (tree_view->priv->prev_width - gtk_adjustment_get_value (tree_view->priv->hadjustment)),
2729                                              0,
2730                                              tree_view->priv->width - allocation->width));
2731         }
2732       else
2733         {
2734           gtk_adjustment_set_value (tree_view->priv->hadjustment, 0);
2735           tree_view->priv->init_hadjust_value = TRUE;
2736         }
2737     }
2738   else
2739     if (gtk_adjustment_get_value (tree_view->priv->hadjustment) + allocation->width > tree_view->priv->width)
2740       gtk_adjustment_set_value (tree_view->priv->hadjustment,
2741                                 MAX (tree_view->priv->width -
2742                                      allocation->width, 0));
2743
2744   g_object_freeze_notify (G_OBJECT (tree_view->priv->vadjustment));
2745   gtk_adjustment_set_page_size (tree_view->priv->vadjustment,
2746                                 allocation->height -
2747                                 gtk_tree_view_get_effective_header_height (tree_view));
2748   gtk_adjustment_set_step_increment (tree_view->priv->vadjustment,
2749                                      gtk_adjustment_get_page_size (tree_view->priv->vadjustment) * 0.1);
2750   gtk_adjustment_set_page_increment (tree_view->priv->vadjustment,
2751                                      gtk_adjustment_get_page_size (tree_view->priv->vadjustment) * 0.9);
2752   gtk_adjustment_set_lower (tree_view->priv->vadjustment, 0);
2753   gtk_adjustment_set_upper (tree_view->priv->vadjustment,
2754                             MAX (gtk_adjustment_get_page_size (tree_view->priv->vadjustment),
2755                                  tree_view->priv->height));
2756   g_object_thaw_notify (G_OBJECT (tree_view->priv->vadjustment));
2757
2758   /* now the adjustments and window sizes are in sync, we can sync toprow/dy again */
2759   if (tree_view->priv->height <= gtk_adjustment_get_page_size (tree_view->priv->vadjustment))
2760     gtk_adjustment_set_value (GTK_ADJUSTMENT (tree_view->priv->vadjustment), 0);
2761   else if (gtk_adjustment_get_value (tree_view->priv->vadjustment) + gtk_adjustment_get_page_size (tree_view->priv->vadjustment) > tree_view->priv->height)
2762     gtk_adjustment_set_value (GTK_ADJUSTMENT (tree_view->priv->vadjustment),
2763                               tree_view->priv->height - gtk_adjustment_get_page_size (tree_view->priv->vadjustment));
2764   else if (gtk_tree_row_reference_valid (tree_view->priv->top_row))
2765     gtk_tree_view_top_row_to_dy (tree_view);
2766   else
2767     gtk_tree_view_dy_to_top_row (tree_view);
2768
2769   if (gtk_widget_get_realized (widget))
2770     {
2771       gdk_window_move_resize (gtk_widget_get_window (widget),
2772                               allocation->x, allocation->y,
2773                               allocation->width, allocation->height);
2774       gdk_window_move_resize (tree_view->priv->header_window,
2775                               - (gint) gtk_adjustment_get_value (tree_view->priv->hadjustment),
2776                               0,
2777                               MAX (tree_view->priv->width, allocation->width),
2778                               tree_view->priv->header_height);
2779       gdk_window_move_resize (tree_view->priv->bin_window,
2780                               - (gint) gtk_adjustment_get_value (tree_view->priv->hadjustment),
2781                               gtk_tree_view_get_effective_header_height (tree_view),
2782                               MAX (tree_view->priv->width, allocation->width),
2783                               allocation->height - gtk_tree_view_get_effective_header_height (tree_view));
2784
2785       if (tree_view->priv->tree == NULL)
2786         invalidate_empty_focus (tree_view);
2787
2788       if (width_changed && tree_view->priv->expander_column)
2789         {
2790           /* Might seem awkward, but is the best heuristic I could come up
2791            * with.  Only if the width of the columns before the expander
2792            * changes, we will update the prelight status.  It is this
2793            * width that makes the expander move vertically.  Always updating
2794            * prelight status causes trouble with hover selections.
2795            */
2796           gint width_before_expander;
2797
2798           width_before_expander = gtk_tree_view_calculate_width_before_expander (tree_view);
2799
2800           if (tree_view->priv->prev_width_before_expander
2801               != width_before_expander)
2802               update_prelight (tree_view,
2803                                tree_view->priv->event_last_x,
2804                                tree_view->priv->event_last_y);
2805
2806           tree_view->priv->prev_width_before_expander = width_before_expander;
2807         }
2808     }
2809 }
2810
2811 /* Grabs the focus and unsets the GTK_TREE_VIEW_DRAW_KEYFOCUS flag */
2812 static void
2813 grab_focus_and_unset_draw_keyfocus (GtkTreeView *tree_view)
2814 {
2815   GtkWidget *widget = GTK_WIDGET (tree_view);
2816
2817   if (gtk_widget_get_can_focus (widget) && !gtk_widget_has_focus (widget))
2818     gtk_widget_grab_focus (widget);
2819   tree_view->priv->draw_keyfocus = 0;
2820 }
2821
2822 static inline gboolean
2823 row_is_separator (GtkTreeView *tree_view,
2824                   GtkTreeIter *iter,
2825                   GtkTreePath *path)
2826 {
2827   gboolean is_separator = FALSE;
2828
2829   if (tree_view->priv->row_separator_func)
2830     {
2831       GtkTreeIter tmpiter;
2832
2833       if (iter)
2834         tmpiter = *iter;
2835       else
2836         {
2837           if (!gtk_tree_model_get_iter (tree_view->priv->model, &tmpiter, path))
2838             return FALSE;
2839         }
2840
2841       is_separator = tree_view->priv->row_separator_func (tree_view->priv->model,
2842                                                           &tmpiter,
2843                                                           tree_view->priv->row_separator_data);
2844     }
2845
2846   return is_separator;
2847 }
2848
2849 static int
2850 gtk_tree_view_get_expander_size (GtkTreeView *tree_view)
2851 {
2852   gint expander_size;
2853
2854   gtk_widget_style_get (GTK_WIDGET (tree_view),
2855                         "expander-size", &expander_size,
2856                         NULL);
2857   expander_size += EXPANDER_EXTRA_PADDING;
2858
2859   return expander_size;
2860 }
2861
2862 static gboolean
2863 gtk_tree_view_button_press (GtkWidget      *widget,
2864                             GdkEventButton *event)
2865 {
2866   GtkTreeView *tree_view = GTK_TREE_VIEW (widget);
2867   GList *list;
2868   GtkTreeViewColumn *column = NULL;
2869   gint i;
2870   GdkRectangle background_area;
2871   GdkRectangle cell_area;
2872   gint vertical_separator;
2873   gint horizontal_separator;
2874   gboolean path_is_selectable;
2875   gboolean rtl;
2876
2877   rtl = (gtk_widget_get_direction (widget) == GTK_TEXT_DIR_RTL);
2878   gtk_tree_view_stop_editing (tree_view, FALSE);
2879   gtk_widget_style_get (widget,
2880                         "vertical-separator", &vertical_separator,
2881                         "horizontal-separator", &horizontal_separator,
2882                         NULL);
2883
2884   /* Don't handle extra mouse buttons events, let them bubble up */
2885   if (event->button > 5)
2886     return FALSE;
2887
2888   /* Because grab_focus can cause reentrancy, we delay grab_focus until after
2889    * we're done handling the button press.
2890    */
2891
2892   if (event->window == tree_view->priv->bin_window)
2893     {
2894       GtkRBNode *node;
2895       GtkRBTree *tree;
2896       GtkTreePath *path;
2897       gint depth;
2898       gint new_y;
2899       gint y_offset;
2900       gint dval;
2901       gint pre_val, aft_val;
2902       GtkTreeViewColumn *column = NULL;
2903       gint column_handled_click = FALSE;
2904       gboolean row_double_click = FALSE;
2905       gboolean rtl;
2906       gboolean node_selected;
2907       GdkModifierType extend_mod_mask;
2908       GdkModifierType modify_mod_mask;
2909
2910       /* Empty tree? */
2911       if (tree_view->priv->tree == NULL)
2912         {
2913           grab_focus_and_unset_draw_keyfocus (tree_view);
2914           return TRUE;
2915         }
2916
2917       /* are we in an arrow? */
2918       if (tree_view->priv->prelight_node &&
2919           tree_view->priv->arrow_prelit &&
2920           gtk_tree_view_draw_expanders (tree_view))
2921         {
2922           if (event->button == GDK_BUTTON_PRIMARY)
2923             {
2924               gtk_grab_add (widget);
2925               tree_view->priv->button_pressed_node = tree_view->priv->prelight_node;
2926               tree_view->priv->button_pressed_tree = tree_view->priv->prelight_tree;
2927               gtk_tree_view_queue_draw_arrow (GTK_TREE_VIEW (widget),
2928                                               tree_view->priv->prelight_tree,
2929                                               tree_view->priv->prelight_node);
2930             }
2931
2932           grab_focus_and_unset_draw_keyfocus (tree_view);
2933           return TRUE;
2934         }
2935
2936       /* find the node that was clicked */
2937       new_y = TREE_WINDOW_Y_TO_RBTREE_Y(tree_view, event->y);
2938       if (new_y < 0)
2939         new_y = 0;
2940       y_offset = -_gtk_rbtree_find_offset (tree_view->priv->tree, new_y, &tree, &node);
2941
2942       if (node == NULL)
2943         {
2944           /* We clicked in dead space */
2945           grab_focus_and_unset_draw_keyfocus (tree_view);
2946           return TRUE;
2947         }
2948
2949       /* Get the path and the node */
2950       path = _gtk_tree_path_new_from_rbtree (tree, node);
2951       path_is_selectable = !row_is_separator (tree_view, NULL, path);
2952
2953       if (!path_is_selectable)
2954         {
2955           gtk_tree_path_free (path);
2956           grab_focus_and_unset_draw_keyfocus (tree_view);
2957           return TRUE;
2958         }
2959
2960       depth = gtk_tree_path_get_depth (path);
2961       background_area.y = y_offset + event->y;
2962       background_area.height = gtk_tree_view_get_row_height (tree_view, node);
2963       background_area.x = 0;
2964
2965
2966       /* Let the column have a chance at selecting it. */
2967       rtl = (gtk_widget_get_direction (GTK_WIDGET (tree_view)) == GTK_TEXT_DIR_RTL);
2968       for (list = (rtl ? g_list_last (tree_view->priv->columns) : g_list_first (tree_view->priv->columns));
2969            list; list = (rtl ? list->prev : list->next))
2970         {
2971           GtkTreeViewColumn *candidate = list->data;
2972
2973           if (!gtk_tree_view_column_get_visible (candidate))
2974             continue;
2975
2976           background_area.width = gtk_tree_view_column_get_width (candidate);
2977           if ((background_area.x > (gint) event->x) ||
2978               (background_area.x + background_area.width <= (gint) event->x))
2979             {
2980               background_area.x += background_area.width;
2981               continue;
2982             }
2983
2984           /* we found the focus column */
2985           column = candidate;
2986           cell_area = background_area;
2987           cell_area.width -= horizontal_separator;
2988           cell_area.height -= vertical_separator;
2989           cell_area.x += horizontal_separator/2;
2990           cell_area.y += vertical_separator/2;
2991           if (gtk_tree_view_is_expander_column (tree_view, column))
2992             {
2993               if (!rtl)
2994                 cell_area.x += (depth - 1) * tree_view->priv->level_indentation;
2995               cell_area.width -= (depth - 1) * tree_view->priv->level_indentation;
2996
2997               if (gtk_tree_view_draw_expanders (tree_view))
2998                 {
2999                   gint expander_size = gtk_tree_view_get_expander_size (tree_view);
3000                   if (!rtl)
3001                     cell_area.x += depth * expander_size;
3002                   cell_area.width -= depth * expander_size;
3003                 }
3004             }
3005           break;
3006         }
3007
3008       if (column == NULL)
3009         {
3010           gtk_tree_path_free (path);
3011           grab_focus_and_unset_draw_keyfocus (tree_view);
3012           return FALSE;
3013         }
3014
3015       _gtk_tree_view_set_focus_column (tree_view, column);
3016
3017       /* decide if we edit */
3018       if (event->type == GDK_BUTTON_PRESS && event->button == GDK_BUTTON_PRIMARY &&
3019           !(event->state & gtk_accelerator_get_default_mod_mask ()))
3020         {
3021           GtkTreePath *anchor;
3022           GtkTreeIter iter;
3023
3024           gtk_tree_model_get_iter (tree_view->priv->model, &iter, path);
3025           gtk_tree_view_column_cell_set_cell_data (column,
3026                                                    tree_view->priv->model,
3027                                                    &iter,
3028                                                    GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_PARENT),
3029                                                    node->children?TRUE:FALSE);
3030
3031           if (tree_view->priv->anchor)
3032             anchor = gtk_tree_row_reference_get_path (tree_view->priv->anchor);
3033           else
3034             anchor = NULL;
3035
3036           if ((anchor && !gtk_tree_path_compare (anchor, path))
3037               || !_gtk_tree_view_column_has_editable_cell (column))
3038             {
3039               GtkCellEditable *cell_editable = NULL;
3040
3041               /* FIXME: get the right flags */
3042               guint flags = 0;
3043
3044               if (_gtk_tree_view_column_cell_event (column,
3045                                                     (GdkEvent *)event,
3046                                                     &cell_area, flags))
3047                 {
3048                   GtkCellArea *area = gtk_cell_layout_get_area (GTK_CELL_LAYOUT (column));
3049                   cell_editable = gtk_cell_area_get_edit_widget (area);
3050
3051                   if (cell_editable != NULL)
3052                     {
3053                       gtk_tree_path_free (path);
3054                       gtk_tree_path_free (anchor);
3055                       return TRUE;
3056                     }
3057                   column_handled_click = TRUE;
3058                 }
3059             }
3060           if (anchor)
3061             gtk_tree_path_free (anchor);
3062         }
3063
3064       extend_mod_mask =
3065         gtk_widget_get_modifier_mask (widget, GDK_MODIFIER_INTENT_EXTEND_SELECTION);
3066
3067       modify_mod_mask =
3068         gtk_widget_get_modifier_mask (widget, GDK_MODIFIER_INTENT_MODIFY_SELECTION);
3069
3070       /* select */
3071       node_selected = GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_SELECTED);
3072       pre_val = gtk_adjustment_get_value (tree_view->priv->vadjustment);
3073
3074       /* we only handle selection modifications on the first button press
3075        */
3076       if (event->type == GDK_BUTTON_PRESS)
3077         {
3078           GtkCellRenderer *focus_cell;
3079
3080           if ((event->state & modify_mod_mask) == modify_mod_mask)
3081             tree_view->priv->modify_selection_pressed = TRUE;
3082           if ((event->state & extend_mod_mask) == extend_mod_mask)
3083             tree_view->priv->extend_selection_pressed = TRUE;
3084
3085           /* We update the focus cell here, this is also needed if the
3086            * column does not contain an editable cell.  In this case,
3087            * GtkCellArea did not receive the event for processing (and
3088            * could not update the focus cell).
3089            */
3090           focus_cell = _gtk_tree_view_column_get_cell_at_pos (column,
3091                                                               &cell_area,
3092                                                               &background_area,
3093                                                               event->x,
3094                                                               event->y);
3095
3096           if (focus_cell)
3097             gtk_tree_view_column_focus_cell (column, focus_cell);
3098
3099           if (event->state & modify_mod_mask)
3100             {
3101               gtk_tree_view_real_set_cursor (tree_view, path, CLAMP_NODE);
3102               gtk_tree_view_real_toggle_cursor_row (tree_view);
3103             }
3104           else if (event->state & extend_mod_mask)
3105             {
3106               gtk_tree_view_real_set_cursor (tree_view, path, CLAMP_NODE);
3107               gtk_tree_view_real_select_cursor_row (tree_view, FALSE);
3108             }
3109           else
3110             {
3111               gtk_tree_view_real_set_cursor (tree_view, path, CLEAR_AND_SELECT | CLAMP_NODE);
3112             }
3113
3114           tree_view->priv->modify_selection_pressed = FALSE;
3115           tree_view->priv->extend_selection_pressed = FALSE;
3116         }
3117
3118       /* the treeview may have been scrolled because of _set_cursor,
3119        * correct here
3120        */
3121
3122       aft_val = gtk_adjustment_get_value (tree_view->priv->vadjustment);
3123       dval = pre_val - aft_val;
3124
3125       cell_area.y += dval;
3126       background_area.y += dval;
3127
3128       /* Save press to possibly begin a drag
3129        */
3130       if (!column_handled_click &&
3131           !tree_view->priv->in_grab &&
3132           tree_view->priv->pressed_button < 0)
3133         {
3134           tree_view->priv->pressed_button = event->button;
3135           tree_view->priv->press_start_x = event->x;
3136           tree_view->priv->press_start_y = event->y;
3137
3138           if (tree_view->priv->rubber_banding_enable
3139               && !node_selected
3140               && gtk_tree_selection_get_mode (tree_view->priv->selection) == GTK_SELECTION_MULTIPLE)
3141             {
3142               tree_view->priv->press_start_y += tree_view->priv->dy;
3143               tree_view->priv->rubber_band_x = event->x;
3144               tree_view->priv->rubber_band_y = event->y + tree_view->priv->dy;
3145               tree_view->priv->rubber_band_status = RUBBER_BAND_MAYBE_START;
3146
3147               if ((event->state & modify_mod_mask) == modify_mod_mask)
3148                 tree_view->priv->rubber_band_modify = TRUE;
3149               if ((event->state & extend_mod_mask) == extend_mod_mask)
3150                 tree_view->priv->rubber_band_extend = TRUE;
3151             }
3152         }
3153
3154       /* Test if a double click happened on the same row. */
3155       if (event->button == GDK_BUTTON_PRIMARY && event->type == GDK_BUTTON_PRESS)
3156         {
3157           int double_click_time, double_click_distance;
3158
3159           g_object_get (gtk_settings_get_default (),
3160                         "gtk-double-click-time", &double_click_time,
3161                         "gtk-double-click-distance", &double_click_distance,
3162                         NULL);
3163
3164           /* Same conditions as _gdk_event_button_generate */
3165           if (tree_view->priv->last_button_x != -1 &&
3166               (event->time < tree_view->priv->last_button_time + double_click_time) &&
3167               (ABS (event->x - tree_view->priv->last_button_x) <= double_click_distance) &&
3168               (ABS (event->y - tree_view->priv->last_button_y) <= double_click_distance))
3169             {
3170               /* We do no longer compare paths of this row and the
3171                * row clicked previously.  We use the double click
3172                * distance to decide whether this is a valid click,
3173                * allowing the mouse to slightly move over another row.
3174                */
3175               row_double_click = TRUE;
3176
3177               tree_view->priv->last_button_time = 0;
3178               tree_view->priv->last_button_x = -1;
3179               tree_view->priv->last_button_y = -1;
3180             }
3181           else
3182             {
3183               tree_view->priv->last_button_time = event->time;
3184               tree_view->priv->last_button_x = event->x;
3185               tree_view->priv->last_button_y = event->y;
3186             }
3187         }
3188
3189       if (row_double_click)
3190         {
3191           gtk_grab_remove (widget);
3192           gtk_tree_view_row_activated (tree_view, path, column);
3193
3194           if (tree_view->priv->pressed_button == event->button)
3195             tree_view->priv->pressed_button = -1;
3196         }
3197
3198       gtk_tree_path_free (path);
3199
3200       /* If we activated the row through a double click we don't want to grab
3201        * focus back, as moving focus to another widget is pretty common.
3202        */
3203       if (!row_double_click)
3204         grab_focus_and_unset_draw_keyfocus (tree_view);
3205
3206       return TRUE;
3207     }
3208
3209   /* We didn't click in the window.  Let's check to see if we clicked on a column resize window.
3210    */
3211   for (i = 0, list = tree_view->priv->columns; list; list = list->next, i++)
3212     {
3213       column = list->data;
3214       if (event->window == _gtk_tree_view_column_get_window (column) &&
3215           gtk_tree_view_column_get_resizable (column) &&
3216           _gtk_tree_view_column_get_window (column))
3217         {
3218           gpointer drag_data;
3219
3220           if (event->type == GDK_2BUTTON_PRESS &&
3221               gtk_tree_view_column_get_sizing (column) != GTK_TREE_VIEW_COLUMN_AUTOSIZE)
3222             {
3223               _gtk_tree_view_column_set_use_resized_width (column, FALSE);
3224               _gtk_tree_view_column_autosize (tree_view, column);
3225               return TRUE;
3226             }
3227
3228           if (gdk_device_grab (gdk_event_get_device ((GdkEvent*)event),
3229                                _gtk_tree_view_column_get_window (column),
3230                                GDK_OWNERSHIP_NONE,
3231                                FALSE,
3232                                GDK_POINTER_MOTION_HINT_MASK
3233                                 | GDK_BUTTON1_MOTION_MASK
3234                                 | GDK_BUTTON_RELEASE_MASK,
3235                                NULL,
3236                                event->time) != GDK_GRAB_SUCCESS)
3237             return FALSE;
3238
3239           gtk_grab_add (widget);
3240           tree_view->priv->in_column_resize = TRUE;
3241
3242           _gtk_tree_view_column_set_resized_width (column, gtk_tree_view_column_get_width (column) -
3243                                                    tree_view->priv->last_extra_space_per_column);
3244
3245           /* block attached dnd signal handler */
3246           drag_data = g_object_get_data (G_OBJECT (widget), "gtk-site-data");
3247           if (drag_data)
3248             g_signal_handlers_block_matched (widget,
3249                                              G_SIGNAL_MATCH_DATA,
3250                                              0, 0, NULL, NULL,
3251                                              drag_data);
3252
3253           tree_view->priv->drag_pos = i;
3254           tree_view->priv->x_drag = gtk_tree_view_column_get_x_offset (column) + (rtl ? 0 : gtk_tree_view_column_get_width (column));
3255
3256           if (!gtk_widget_has_focus (widget))
3257             gtk_widget_grab_focus (widget);
3258
3259           return TRUE;
3260         }
3261     }
3262   return FALSE;
3263 }
3264
3265 /* GtkWidget::button_release_event helper */
3266 static gboolean
3267 gtk_tree_view_button_release_drag_column (GtkWidget      *widget,
3268                                           GdkEventButton *event)
3269 {
3270   GtkTreeView *tree_view;
3271   GtkWidget *button;
3272   GList *l;
3273   gboolean rtl;
3274   GdkDevice *device, *other;
3275   GtkStyleContext *context;
3276
3277   tree_view = GTK_TREE_VIEW (widget);
3278
3279   rtl = (gtk_widget_get_direction (widget) == GTK_TEXT_DIR_RTL);
3280   device = gdk_event_get_device ((GdkEvent*)event);
3281   other = gdk_device_get_associated_device (device);
3282   gdk_device_ungrab (device, event->time);
3283   gdk_device_ungrab (other, event->time);
3284
3285   /* Move the button back */
3286   button = gtk_tree_view_column_get_button (tree_view->priv->drag_column);
3287
3288   context = gtk_widget_get_style_context (button);
3289   gtk_style_context_remove_class (context, GTK_STYLE_CLASS_DND);
3290
3291   g_object_ref (button);
3292   gtk_container_remove (GTK_CONTAINER (tree_view), button);
3293   gtk_widget_set_parent_window (button, tree_view->priv->header_window);
3294   gtk_widget_set_parent (button, GTK_WIDGET (tree_view));
3295   g_object_unref (button);
3296   gtk_widget_queue_resize (widget);
3297   if (gtk_tree_view_column_get_resizable (tree_view->priv->drag_column))
3298     {
3299       gdk_window_raise (_gtk_tree_view_column_get_window (tree_view->priv->drag_column));
3300       gdk_window_show (_gtk_tree_view_column_get_window (tree_view->priv->drag_column));
3301     }
3302   else
3303     gdk_window_hide (_gtk_tree_view_column_get_window (tree_view->priv->drag_column));
3304
3305   gtk_widget_grab_focus (button);
3306
3307   if (rtl)
3308     {
3309       if (tree_view->priv->cur_reorder &&
3310           tree_view->priv->cur_reorder->right_column != tree_view->priv->drag_column)
3311         gtk_tree_view_move_column_after (tree_view, tree_view->priv->drag_column,
3312                                          tree_view->priv->cur_reorder->right_column);
3313     }
3314   else
3315     {
3316       if (tree_view->priv->cur_reorder &&
3317           tree_view->priv->cur_reorder->left_column != tree_view->priv->drag_column)
3318         gtk_tree_view_move_column_after (tree_view, tree_view->priv->drag_column,
3319                                          tree_view->priv->cur_reorder->left_column);
3320     }
3321   tree_view->priv->drag_column = NULL;
3322   gdk_window_destroy (tree_view->priv->drag_window);
3323   tree_view->priv->drag_window = NULL;
3324
3325   for (l = tree_view->priv->column_drag_info; l != NULL; l = l->next)
3326     g_slice_free (GtkTreeViewColumnReorder, l->data);
3327   g_list_free (tree_view->priv->column_drag_info);
3328   tree_view->priv->column_drag_info = NULL;
3329   tree_view->priv->cur_reorder = NULL;
3330
3331   if (tree_view->priv->drag_highlight_window)
3332     gdk_window_hide (tree_view->priv->drag_highlight_window);
3333
3334   /* Reset our flags */
3335   tree_view->priv->drag_column_window_state = DRAG_COLUMN_WINDOW_STATE_UNSET;
3336   tree_view->priv->in_column_drag = FALSE;
3337
3338   return TRUE;
3339 }
3340
3341 /* GtkWidget::button_release_event helper */
3342 static gboolean
3343 gtk_tree_view_button_release_column_resize (GtkWidget      *widget,
3344                                             GdkEventButton *event)
3345 {
3346   GtkTreeView *tree_view;
3347   gpointer drag_data;
3348
3349   tree_view = GTK_TREE_VIEW (widget);
3350
3351   tree_view->priv->drag_pos = -1;
3352
3353   /* unblock attached dnd signal handler */
3354   drag_data = g_object_get_data (G_OBJECT (widget), "gtk-site-data");
3355   if (drag_data)
3356     g_signal_handlers_unblock_matched (widget,
3357                                        G_SIGNAL_MATCH_DATA,
3358                                        0, 0, NULL, NULL,
3359                                        drag_data);
3360
3361   tree_view->priv->in_column_resize = FALSE;
3362   gtk_grab_remove (widget);
3363   gdk_device_ungrab (gdk_event_get_device ((GdkEvent*)event), event->time);
3364   return TRUE;
3365 }
3366
3367 static gboolean
3368 gtk_tree_view_button_release (GtkWidget      *widget,
3369                               GdkEventButton *event)
3370 {
3371   GtkTreeView *tree_view = GTK_TREE_VIEW (widget);
3372
3373   if (tree_view->priv->in_column_drag)
3374     return gtk_tree_view_button_release_drag_column (widget, event);
3375
3376   if (tree_view->priv->rubber_band_status)
3377     gtk_tree_view_stop_rubber_band (tree_view);
3378
3379   if (tree_view->priv->pressed_button == event->button)
3380     tree_view->priv->pressed_button = -1;
3381
3382   if (tree_view->priv->in_column_resize)
3383     return gtk_tree_view_button_release_column_resize (widget, event);
3384
3385   if (tree_view->priv->button_pressed_node == NULL)
3386     return FALSE;
3387
3388   if (event->button == GDK_BUTTON_PRIMARY)
3389     {
3390       if (tree_view->priv->button_pressed_node == tree_view->priv->prelight_node &&
3391           tree_view->priv->arrow_prelit)
3392         {
3393           GtkTreePath *path = NULL;
3394
3395           path = _gtk_tree_path_new_from_rbtree (tree_view->priv->button_pressed_tree,
3396                                                  tree_view->priv->button_pressed_node);
3397           /* Actually activate the node */
3398           if (tree_view->priv->button_pressed_node->children == NULL)
3399             gtk_tree_view_real_expand_row (tree_view, path,
3400                                            tree_view->priv->button_pressed_tree,
3401                                            tree_view->priv->button_pressed_node,
3402                                            FALSE, TRUE);
3403           else
3404             gtk_tree_view_real_collapse_row (GTK_TREE_VIEW (widget), path,
3405                                              tree_view->priv->button_pressed_tree,
3406                                              tree_view->priv->button_pressed_node, TRUE);
3407           gtk_tree_path_free (path);
3408         }
3409
3410       gtk_grab_remove (widget);
3411       tree_view->priv->button_pressed_tree = NULL;
3412       tree_view->priv->button_pressed_node = NULL;
3413     }
3414
3415   return TRUE;
3416 }
3417
3418 static gboolean
3419 gtk_tree_view_grab_broken (GtkWidget          *widget,
3420                            GdkEventGrabBroken *event)
3421 {
3422   GtkTreeView *tree_view = GTK_TREE_VIEW (widget);
3423
3424   if (tree_view->priv->in_column_drag)
3425     gtk_tree_view_button_release_drag_column (widget, (GdkEventButton *)event);
3426
3427   if (tree_view->priv->in_column_resize)
3428     gtk_tree_view_button_release_column_resize (widget, (GdkEventButton *)event);
3429
3430   return TRUE;
3431 }
3432
3433 #if 0
3434 static gboolean
3435 gtk_tree_view_configure (GtkWidget *widget,
3436                          GdkEventConfigure *event)
3437 {
3438   GtkTreeView *tree_view;
3439
3440   tree_view = GTK_TREE_VIEW (widget);
3441   tree_view->priv->search_position_func (tree_view, tree_view->priv->search_window);
3442
3443   return FALSE;
3444 }
3445 #endif
3446
3447 /* GtkWidget::motion_event function set.
3448  */
3449
3450 static gboolean
3451 coords_are_over_arrow (GtkTreeView *tree_view,
3452                        GtkRBTree   *tree,
3453                        GtkRBNode   *node,
3454                        /* these are in bin window coords */
3455                        gint         x,
3456                        gint         y)
3457 {
3458   GdkRectangle arrow;
3459   gint x2;
3460
3461   if (!gtk_widget_get_realized (GTK_WIDGET (tree_view)))
3462     return FALSE;
3463
3464   if ((node->flags & GTK_RBNODE_IS_PARENT) == 0)
3465     return FALSE;
3466
3467   arrow.y = gtk_tree_view_get_row_y_offset (tree_view, tree, node);
3468   arrow.height = gtk_tree_view_get_row_height (tree_view, node);
3469
3470   gtk_tree_view_get_arrow_xrange (tree_view, tree, &arrow.x, &x2);
3471
3472   arrow.width = x2 - arrow.x;
3473
3474   return (x >= arrow.x &&
3475           x < (arrow.x + arrow.width) &&
3476           y >= arrow.y &&
3477           y < (arrow.y + arrow.height));
3478 }
3479
3480 static gboolean
3481 auto_expand_timeout (gpointer data)
3482 {
3483   GtkTreeView *tree_view = GTK_TREE_VIEW (data);
3484   GtkTreePath *path;
3485
3486   if (tree_view->priv->prelight_node)
3487     {
3488       path = _gtk_tree_path_new_from_rbtree (tree_view->priv->prelight_tree,
3489                                              tree_view->priv->prelight_node);
3490
3491       if (tree_view->priv->prelight_node->children)
3492         gtk_tree_view_collapse_row (tree_view, path);
3493       else
3494         gtk_tree_view_expand_row (tree_view, path, FALSE);
3495
3496       gtk_tree_path_free (path);
3497     }
3498
3499   tree_view->priv->auto_expand_timeout = 0;
3500
3501   return FALSE;
3502 }
3503
3504 static void
3505 remove_auto_expand_timeout (GtkTreeView *tree_view)
3506 {
3507   if (tree_view->priv->auto_expand_timeout != 0)
3508     {
3509       g_source_remove (tree_view->priv->auto_expand_timeout);
3510       tree_view->priv->auto_expand_timeout = 0;
3511     }
3512 }
3513
3514 static void
3515 do_prelight (GtkTreeView *tree_view,
3516              GtkRBTree   *tree,
3517              GtkRBNode   *node,
3518              /* these are in bin_window coords */
3519              gint         x,
3520              gint         y)
3521 {
3522   if (tree_view->priv->prelight_tree == tree &&
3523       tree_view->priv->prelight_node == node)
3524     {
3525       /*  We are still on the same node,
3526           but we might need to take care of the arrow  */
3527
3528       if (tree && node && gtk_tree_view_draw_expanders (tree_view))
3529         {
3530           gboolean over_arrow;
3531
3532           over_arrow = coords_are_over_arrow (tree_view, tree, node, x, y);
3533
3534           if (over_arrow != tree_view->priv->arrow_prelit)
3535             {
3536               if (over_arrow)
3537                 tree_view->priv->arrow_prelit = TRUE;
3538               else
3539                 tree_view->priv->arrow_prelit = FALSE;
3540
3541               gtk_tree_view_queue_draw_arrow (tree_view, tree, node);
3542             }
3543         }
3544
3545       return;
3546     }
3547
3548   if (tree_view->priv->prelight_tree && tree_view->priv->prelight_node)
3549     {
3550       /*  Unprelight the old node and arrow  */
3551
3552       GTK_RBNODE_UNSET_FLAG (tree_view->priv->prelight_node,
3553                              GTK_RBNODE_IS_PRELIT);
3554
3555       if (tree_view->priv->arrow_prelit
3556           && gtk_tree_view_draw_expanders (tree_view))
3557         {
3558           tree_view->priv->arrow_prelit = FALSE;
3559
3560           gtk_tree_view_queue_draw_arrow (tree_view,
3561                                           tree_view->priv->prelight_tree,
3562                                           tree_view->priv->prelight_node);
3563         }
3564
3565       _gtk_tree_view_queue_draw_node (tree_view,
3566                                       tree_view->priv->prelight_tree,
3567                                       tree_view->priv->prelight_node,
3568                                       NULL);
3569     }
3570
3571
3572   if (tree_view->priv->hover_expand)
3573     remove_auto_expand_timeout (tree_view);
3574
3575   /*  Set the new prelight values  */
3576   tree_view->priv->prelight_node = node;
3577   tree_view->priv->prelight_tree = tree;
3578
3579   if (!node || !tree)
3580     return;
3581
3582   /*  Prelight the new node and arrow  */
3583
3584   if (gtk_tree_view_draw_expanders (tree_view)
3585       && coords_are_over_arrow (tree_view, tree, node, x, y))
3586     {
3587       tree_view->priv->arrow_prelit = TRUE;
3588
3589       gtk_tree_view_queue_draw_arrow (tree_view, tree, node);
3590     }
3591
3592   GTK_RBNODE_SET_FLAG (node, GTK_RBNODE_IS_PRELIT);
3593
3594   _gtk_tree_view_queue_draw_node (tree_view, tree, node, NULL);
3595
3596   if (tree_view->priv->hover_expand)
3597     {
3598       tree_view->priv->auto_expand_timeout =
3599         gdk_threads_add_timeout (AUTO_EXPAND_TIMEOUT, auto_expand_timeout, tree_view);
3600     }
3601 }
3602
3603 static void
3604 prelight_or_select (GtkTreeView *tree_view,
3605                     GtkRBTree   *tree,
3606                     GtkRBNode   *node,
3607                     /* these are in bin_window coords */
3608                     gint         x,
3609                     gint         y)
3610 {
3611   GtkSelectionMode mode = gtk_tree_selection_get_mode (tree_view->priv->selection);
3612
3613   if (tree_view->priv->hover_selection &&
3614       (mode == GTK_SELECTION_SINGLE || mode == GTK_SELECTION_BROWSE) &&
3615       !(tree_view->priv->edited_column &&
3616         gtk_cell_area_get_edit_widget
3617         (gtk_cell_layout_get_area (GTK_CELL_LAYOUT (tree_view->priv->edited_column)))))
3618     {
3619       if (node)
3620         {
3621           if (!GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_SELECTED))
3622             {
3623               GtkTreePath *path;
3624
3625               path = _gtk_tree_path_new_from_rbtree (tree, node);
3626               gtk_tree_selection_select_path (tree_view->priv->selection, path);
3627               if (GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_SELECTED))
3628                 {
3629                   tree_view->priv->draw_keyfocus = FALSE;
3630                   gtk_tree_view_real_set_cursor (tree_view, path, 0);
3631                 }
3632               gtk_tree_path_free (path);
3633             }
3634         }
3635
3636       else if (mode == GTK_SELECTION_SINGLE)
3637         gtk_tree_selection_unselect_all (tree_view->priv->selection);
3638     }
3639
3640     do_prelight (tree_view, tree, node, x, y);
3641 }
3642
3643 static void
3644 ensure_unprelighted (GtkTreeView *tree_view)
3645 {
3646   do_prelight (tree_view,
3647                NULL, NULL,
3648                -1000, -1000); /* coords not possibly over an arrow */
3649
3650   g_assert (tree_view->priv->prelight_node == NULL);
3651 }
3652
3653 static void
3654 update_prelight (GtkTreeView *tree_view,
3655                  gint         x,
3656                  gint         y)
3657 {
3658   int new_y;
3659   GtkRBTree *tree;
3660   GtkRBNode *node;
3661
3662   if (tree_view->priv->tree == NULL)
3663     return;
3664
3665   if (x == -10000)
3666     {
3667       ensure_unprelighted (tree_view);
3668       return;
3669     }
3670
3671   new_y = TREE_WINDOW_Y_TO_RBTREE_Y (tree_view, y);
3672   if (new_y < 0)
3673     new_y = 0;
3674
3675   _gtk_rbtree_find_offset (tree_view->priv->tree,
3676                            new_y, &tree, &node);
3677
3678   if (node)
3679     prelight_or_select (tree_view, tree, node, x, y);
3680 }
3681
3682
3683
3684
3685 /* Our motion arrow is either a box (in the case of the original spot)
3686  * or an arrow.  It is expander_size wide.
3687  */
3688 /*
3689  * 11111111111111
3690  * 01111111111110
3691  * 00111111111100
3692  * 00011111111000
3693  * 00001111110000
3694  * 00000111100000
3695  * 00000111100000
3696  * 00000111100000
3697  * ~ ~ ~ ~ ~ ~ ~
3698  * 00000111100000
3699  * 00000111100000
3700  * 00000111100000
3701  * 00001111110000
3702  * 00011111111000
3703  * 00111111111100
3704  * 01111111111110
3705  * 11111111111111
3706  */
3707
3708 static void
3709 gtk_tree_view_motion_draw_column_motion_arrow (GtkTreeView *tree_view)
3710 {
3711   GtkTreeViewColumnReorder *reorder = tree_view->priv->cur_reorder;
3712   GtkWidget *widget = GTK_WIDGET (tree_view);
3713   cairo_surface_t *mask_image;
3714   cairo_region_t *mask_region;
3715   gint x;
3716   gint y;
3717   gint width;
3718   gint height;
3719   gint arrow_type = DRAG_COLUMN_WINDOW_STATE_UNSET;
3720   GdkWindowAttr attributes;
3721   guint attributes_mask;
3722   cairo_t *cr;
3723
3724   if (!reorder ||
3725       reorder->left_column == tree_view->priv->drag_column ||
3726       reorder->right_column == tree_view->priv->drag_column)
3727     arrow_type = DRAG_COLUMN_WINDOW_STATE_ORIGINAL;
3728   else if (reorder->left_column || reorder->right_column)
3729     {
3730       GtkAllocation left_allocation, right_allocation;
3731       GdkRectangle visible_rect;
3732       GtkWidget *button;
3733
3734       gtk_tree_view_get_visible_rect (tree_view, &visible_rect);
3735       if (reorder->left_column)
3736         {
3737           button = gtk_tree_view_column_get_button (reorder->left_column);
3738           gtk_widget_get_allocation (button, &left_allocation);
3739           x = left_allocation.x + left_allocation.width;
3740         }
3741       else
3742         {
3743           button = gtk_tree_view_column_get_button (reorder->right_column);
3744           gtk_widget_get_allocation (button, &right_allocation);
3745           x = right_allocation.x;
3746         }
3747
3748       if (x < visible_rect.x)
3749         arrow_type = DRAG_COLUMN_WINDOW_STATE_ARROW_LEFT;
3750       else if (x > visible_rect.x + visible_rect.width)
3751         arrow_type = DRAG_COLUMN_WINDOW_STATE_ARROW_RIGHT;
3752       else
3753         arrow_type = DRAG_COLUMN_WINDOW_STATE_ARROW;
3754     }
3755
3756   /* We want to draw the rectangle over the initial location. */
3757   if (arrow_type == DRAG_COLUMN_WINDOW_STATE_ORIGINAL)
3758     {
3759       if (tree_view->priv->drag_column_window_state != DRAG_COLUMN_WINDOW_STATE_ORIGINAL)
3760         {
3761           GtkAllocation drag_allocation;
3762           GtkWidget    *button;
3763
3764           if (tree_view->priv->drag_highlight_window)
3765             {
3766               gdk_window_set_user_data (tree_view->priv->drag_highlight_window,
3767                                         NULL);
3768               gdk_window_destroy (tree_view->priv->drag_highlight_window);
3769             }
3770
3771           button = gtk_tree_view_column_get_button (tree_view->priv->drag_column);
3772           attributes.window_type = GDK_WINDOW_CHILD;
3773           attributes.wclass = GDK_INPUT_OUTPUT;
3774           attributes.x = tree_view->priv->drag_column_x;
3775           attributes.y = 0;
3776           gtk_widget_get_allocation (button, &drag_allocation);
3777           width = attributes.width = drag_allocation.width;
3778           height = attributes.height = drag_allocation.height;
3779           attributes.visual = gtk_widget_get_visual (GTK_WIDGET (tree_view));
3780           attributes.event_mask = GDK_VISIBILITY_NOTIFY_MASK | GDK_EXPOSURE_MASK | GDK_POINTER_MOTION_MASK;
3781           attributes_mask = GDK_WA_X | GDK_WA_Y | GDK_WA_VISUAL;
3782           tree_view->priv->drag_highlight_window = gdk_window_new (tree_view->priv->header_window, &attributes, attributes_mask);
3783           gdk_window_set_user_data (tree_view->priv->drag_highlight_window, GTK_WIDGET (tree_view));
3784
3785           mask_image = cairo_image_surface_create (CAIRO_FORMAT_A1, width, height);
3786           cr = cairo_create (mask_image);
3787
3788           cairo_rectangle (cr, 1, 1, width - 2, height - 2);
3789           cairo_stroke (cr);
3790           cairo_destroy (cr);
3791
3792           mask_region = gdk_cairo_region_create_from_surface (mask_image);
3793           gdk_window_shape_combine_region (tree_view->priv->drag_highlight_window,
3794                                            mask_region, 0, 0);
3795
3796           cairo_region_destroy (mask_region);
3797           cairo_surface_destroy (mask_image);
3798
3799           tree_view->priv->drag_column_window_state = DRAG_COLUMN_WINDOW_STATE_ORIGINAL;
3800         }
3801     }
3802   else if (arrow_type == DRAG_COLUMN_WINDOW_STATE_ARROW)
3803     {
3804       GtkAllocation button_allocation;
3805       GtkWidget    *button;
3806
3807       width = gtk_tree_view_get_expander_size (tree_view);
3808
3809       /* Get x, y, width, height of arrow */
3810       gdk_window_get_origin (tree_view->priv->header_window, &x, &y);
3811       if (reorder->left_column)
3812         {
3813           button = gtk_tree_view_column_get_button (reorder->left_column);
3814           gtk_widget_get_allocation (button, &button_allocation);
3815           x += button_allocation.x + button_allocation.width - width/2;
3816           height = button_allocation.height;
3817         }
3818       else
3819         {
3820           button = gtk_tree_view_column_get_button (reorder->right_column);
3821           gtk_widget_get_allocation (button, &button_allocation);
3822           x += button_allocation.x - width/2;
3823           height = button_allocation.height;
3824         }
3825       y -= width/2; /* The arrow takes up only half the space */
3826       height += width;
3827
3828       /* Create the new window */
3829       if (tree_view->priv->drag_column_window_state != DRAG_COLUMN_WINDOW_STATE_ARROW)
3830         {
3831           if (tree_view->priv->drag_highlight_window)
3832             {
3833               gdk_window_set_user_data (tree_view->priv->drag_highlight_window,
3834                                         NULL);
3835               gdk_window_destroy (tree_view->priv->drag_highlight_window);
3836             }
3837
3838           attributes.window_type = GDK_WINDOW_TEMP;
3839           attributes.wclass = GDK_INPUT_OUTPUT;
3840           attributes.visual = gtk_widget_get_visual (GTK_WIDGET (tree_view));
3841           attributes.event_mask = GDK_VISIBILITY_NOTIFY_MASK | GDK_EXPOSURE_MASK | GDK_POINTER_MOTION_MASK;
3842           attributes_mask = GDK_WA_X | GDK_WA_Y | GDK_WA_VISUAL;
3843           attributes.x = x;
3844           attributes.y = y;
3845           attributes.width = width;
3846           attributes.height = height;
3847           tree_view->priv->drag_highlight_window = gdk_window_new (gtk_widget_get_root_window (widget),
3848                                                                    &attributes, attributes_mask);
3849           gdk_window_set_user_data (tree_view->priv->drag_highlight_window, GTK_WIDGET (tree_view));
3850
3851           mask_image = cairo_image_surface_create (CAIRO_FORMAT_A1, width, height);
3852
3853           cr = cairo_create (mask_image);
3854           cairo_move_to (cr, 0, 0);
3855           cairo_line_to (cr, width, 0);
3856           cairo_line_to (cr, width / 2., width / 2);
3857           cairo_move_to (cr, 0, height);
3858           cairo_line_to (cr, width, height);
3859           cairo_line_to (cr, width / 2., height - width / 2.);
3860           cairo_fill (cr);
3861           cairo_destroy (cr);
3862
3863           mask_region = gdk_cairo_region_create_from_surface (mask_image);
3864           gdk_window_shape_combine_region (tree_view->priv->drag_highlight_window,
3865                                            mask_region, 0, 0);
3866
3867           cairo_region_destroy (mask_region);
3868           cairo_surface_destroy (mask_image);
3869         }
3870
3871       tree_view->priv->drag_column_window_state = DRAG_COLUMN_WINDOW_STATE_ARROW;
3872       gdk_window_move (tree_view->priv->drag_highlight_window, x, y);
3873     }
3874   else if (arrow_type == DRAG_COLUMN_WINDOW_STATE_ARROW_LEFT ||
3875            arrow_type == DRAG_COLUMN_WINDOW_STATE_ARROW_RIGHT)
3876     {
3877       GtkAllocation allocation;
3878       GtkWidget    *button;
3879       gint          expander_size;
3880
3881       expander_size = gtk_tree_view_get_expander_size (tree_view);
3882
3883       /* Get x, y, width, height of arrow */
3884       width = expander_size/2; /* remember, the arrow only takes half the available width */
3885       gdk_window_get_origin (gtk_widget_get_window (widget),
3886                              &x, &y);
3887       if (arrow_type == DRAG_COLUMN_WINDOW_STATE_ARROW_RIGHT)
3888         {
3889           gtk_widget_get_allocation (widget, &allocation);
3890           x += allocation.width - width;
3891         }
3892
3893       if (reorder->left_column)
3894         {
3895           button = gtk_tree_view_column_get_button (reorder->left_column);
3896           gtk_widget_get_allocation (button, &allocation);
3897           height = allocation.height;
3898         }
3899       else
3900         {
3901           button = gtk_tree_view_column_get_button (reorder->right_column);
3902           gtk_widget_get_allocation (button, &allocation);
3903           height = allocation.height;
3904         }
3905
3906       y -= expander_size;
3907       height += 2 * expander_size;
3908
3909       /* Create the new window */
3910       if (tree_view->priv->drag_column_window_state != DRAG_COLUMN_WINDOW_STATE_ARROW_LEFT &&
3911           tree_view->priv->drag_column_window_state != DRAG_COLUMN_WINDOW_STATE_ARROW_RIGHT)
3912         {
3913           if (tree_view->priv->drag_highlight_window)
3914             {
3915               gdk_window_set_user_data (tree_view->priv->drag_highlight_window,
3916                                         NULL);
3917               gdk_window_destroy (tree_view->priv->drag_highlight_window);
3918             }
3919
3920           attributes.window_type = GDK_WINDOW_TEMP;
3921           attributes.wclass = GDK_INPUT_OUTPUT;
3922           attributes.visual = gtk_widget_get_visual (GTK_WIDGET (tree_view));
3923           attributes.event_mask = GDK_VISIBILITY_NOTIFY_MASK | GDK_EXPOSURE_MASK | GDK_POINTER_MOTION_MASK;
3924           attributes_mask = GDK_WA_X | GDK_WA_Y | GDK_WA_VISUAL;
3925           attributes.x = x;
3926           attributes.y = y;
3927           attributes.width = width;
3928           attributes.height = height;
3929           tree_view->priv->drag_highlight_window = gdk_window_new (gtk_widget_get_root_window (widget), &attributes, attributes_mask);
3930           gdk_window_set_user_data (tree_view->priv->drag_highlight_window, GTK_WIDGET (tree_view));
3931
3932           mask_image = cairo_image_surface_create (CAIRO_FORMAT_A1, width, height);
3933
3934           cr = cairo_create (mask_image);
3935           /* mirror if we're on the left */
3936           if (arrow_type == DRAG_COLUMN_WINDOW_STATE_ARROW_LEFT)
3937             {
3938               cairo_translate (cr, width, 0);
3939               cairo_scale (cr, -1, 1);
3940             }
3941           cairo_move_to (cr, 0, 0);
3942           cairo_line_to (cr, width, width);
3943           cairo_line_to (cr, 0, expander_size);
3944           cairo_move_to (cr, 0, height);
3945           cairo_line_to (cr, width, height - width);
3946           cairo_line_to (cr, 0, height - expander_size);
3947           cairo_fill (cr);
3948           cairo_destroy (cr);
3949
3950           mask_region = gdk_cairo_region_create_from_surface (mask_image);
3951           gdk_window_shape_combine_region (tree_view->priv->drag_highlight_window,
3952                                            mask_region, 0, 0);
3953
3954           cairo_region_destroy (mask_region);
3955           cairo_surface_destroy (mask_image);
3956         }
3957
3958       tree_view->priv->drag_column_window_state = arrow_type;
3959       gdk_window_move (tree_view->priv->drag_highlight_window, x, y);
3960    }
3961   else
3962     {
3963       g_warning (G_STRLOC"Invalid GtkTreeViewColumnReorder struct");
3964       gdk_window_hide (tree_view->priv->drag_highlight_window);
3965       return;
3966     }
3967
3968   gdk_window_show (tree_view->priv->drag_highlight_window);
3969   gdk_window_raise (tree_view->priv->drag_highlight_window);
3970 }
3971
3972 static gboolean
3973 gtk_tree_view_motion_resize_column (GtkWidget      *widget,
3974                                     GdkEventMotion *event)
3975 {
3976   gint x;
3977   gint new_width;
3978   GtkTreeViewColumn *column;
3979   GtkTreeView *tree_view = GTK_TREE_VIEW (widget);
3980
3981   column = gtk_tree_view_get_column (tree_view, tree_view->priv->drag_pos);
3982
3983   if (event->is_hint || event->window != gtk_widget_get_window (widget))
3984     gdk_window_get_device_position (gtk_widget_get_window (widget),
3985                                     gdk_event_get_device ((GdkEvent *) event),
3986                                     &x, NULL, NULL);
3987   else
3988     x = event->x;
3989
3990   if (tree_view->priv->hadjustment)
3991     x += gtk_adjustment_get_value (tree_view->priv->hadjustment);
3992
3993   new_width = gtk_tree_view_new_column_width (tree_view,
3994                                               tree_view->priv->drag_pos, &x);
3995   if (x != tree_view->priv->x_drag &&
3996       (new_width != gtk_tree_view_column_get_fixed_width (column)))
3997     {
3998       _gtk_tree_view_column_set_use_resized_width (column, TRUE);
3999
4000       if (gtk_tree_view_column_get_expand (column))
4001         new_width -= tree_view->priv->last_extra_space_per_column;
4002
4003       _gtk_tree_view_column_set_resized_width (column, new_width);
4004
4005
4006       gtk_widget_queue_resize (widget);
4007     }
4008
4009   return FALSE;
4010 }
4011
4012
4013 static void
4014 gtk_tree_view_update_current_reorder (GtkTreeView *tree_view,
4015                                       GdkEvent    *event)
4016 {
4017   GtkTreeViewColumnReorder *reorder = NULL;
4018   GList *list;
4019   gint mouse_x;
4020
4021   gdk_window_get_device_position (tree_view->priv->header_window,
4022                                   gdk_event_get_device (event),
4023                                   &mouse_x, NULL, NULL);
4024   for (list = tree_view->priv->column_drag_info; list; list = list->next)
4025     {
4026       reorder = (GtkTreeViewColumnReorder *) list->data;
4027       if (mouse_x >= reorder->left_align && mouse_x < reorder->right_align)
4028         break;
4029       reorder = NULL;
4030     }
4031
4032   /*  if (reorder && reorder == tree_view->priv->cur_reorder)
4033       return;*/
4034
4035   tree_view->priv->cur_reorder = reorder;
4036   gtk_tree_view_motion_draw_column_motion_arrow (tree_view);
4037 }
4038
4039 static void
4040 gtk_tree_view_vertical_autoscroll (GtkTreeView *tree_view)
4041 {
4042   GdkRectangle visible_rect;
4043   gint y;
4044   gint offset;
4045
4046   gdk_window_get_device_position (tree_view->priv->bin_window,
4047                                   gdk_device_manager_get_client_pointer (
4048                                     gdk_display_get_device_manager (
4049                                       gtk_widget_get_display (GTK_WIDGET (tree_view)))),
4050                                   NULL, &y, NULL);
4051   y += tree_view->priv->dy;
4052
4053   gtk_tree_view_get_visible_rect (tree_view, &visible_rect);
4054
4055   /* see if we are near the edge. */
4056   offset = y - (visible_rect.y + 2 * SCROLL_EDGE_SIZE);
4057   if (offset > 0)
4058     {
4059       offset = y - (visible_rect.y + visible_rect.height - 2 * SCROLL_EDGE_SIZE);
4060       if (offset < 0)
4061         return;
4062     }
4063
4064   gtk_adjustment_set_value (tree_view->priv->vadjustment,
4065                             MAX (gtk_adjustment_get_value (tree_view->priv->vadjustment) + offset, 0.0));
4066 }
4067
4068 static gboolean
4069 gtk_tree_view_horizontal_autoscroll (GtkTreeView *tree_view,
4070                                      GdkEvent    *event)
4071 {
4072   GdkRectangle visible_rect;
4073   gint x;
4074   gint offset;
4075
4076   gdk_window_get_device_position (tree_view->priv->bin_window,
4077                                   gdk_event_get_device (event),
4078                                   &x, NULL, NULL);
4079
4080   gtk_tree_view_get_visible_rect (tree_view, &visible_rect);
4081
4082   /* See if we are near the edge. */
4083   offset = x - (visible_rect.x + SCROLL_EDGE_SIZE);
4084   if (offset > 0)
4085     {
4086       offset = x - (visible_rect.x + visible_rect.width - SCROLL_EDGE_SIZE);
4087       if (offset < 0)
4088         return TRUE;
4089     }
4090   offset = offset/3;
4091
4092   gtk_adjustment_set_value (tree_view->priv->hadjustment,
4093                             MAX (gtk_adjustment_get_value (tree_view->priv->hadjustment) + offset, 0.0));
4094
4095   return TRUE;
4096
4097 }
4098
4099 static gboolean
4100 gtk_tree_view_motion_drag_column (GtkWidget      *widget,
4101                                   GdkEventMotion *event)
4102 {
4103   GtkAllocation allocation, button_allocation;
4104   GtkTreeView *tree_view = (GtkTreeView *) widget;
4105   GtkTreeViewColumn *column = tree_view->priv->drag_column;
4106   GtkWidget *button;
4107   gint x, y;
4108
4109   /* Sanity Check */
4110   if ((column == NULL) ||
4111       (event->window != tree_view->priv->drag_window))
4112     return FALSE;
4113
4114   button = gtk_tree_view_column_get_button (column);
4115
4116   /* Handle moving the header */
4117   gdk_window_get_position (tree_view->priv->drag_window, &x, &y);
4118   gtk_widget_get_allocation (widget, &allocation);
4119   gtk_widget_get_allocation (button, &button_allocation);
4120   x = CLAMP (x + (gint)event->x - _gtk_tree_view_column_get_drag_x (column), 0,
4121              MAX (tree_view->priv->width, allocation.width) - button_allocation.width);
4122   gdk_window_move (tree_view->priv->drag_window, x, y);
4123
4124   /* autoscroll, if needed */
4125   gtk_tree_view_horizontal_autoscroll (tree_view, (GdkEvent *) event);
4126   /* Update the current reorder position and arrow; */
4127   gtk_tree_view_update_current_reorder (tree_view, (GdkEvent *) event);
4128
4129   return TRUE;
4130 }
4131
4132 static void
4133 gtk_tree_view_stop_rubber_band (GtkTreeView *tree_view)
4134 {
4135   remove_scroll_timeout (tree_view);
4136   gtk_grab_remove (GTK_WIDGET (tree_view));
4137
4138   if (tree_view->priv->rubber_band_status == RUBBER_BAND_ACTIVE)
4139     {
4140       GtkTreePath *tmp_path;
4141
4142       gtk_widget_queue_draw (GTK_WIDGET (tree_view));
4143
4144       /* The anchor path should be set to the start path */
4145       tmp_path = _gtk_tree_path_new_from_rbtree (tree_view->priv->rubber_band_start_tree,
4146                                                  tree_view->priv->rubber_band_start_node);
4147
4148       if (tree_view->priv->anchor)
4149         gtk_tree_row_reference_free (tree_view->priv->anchor);
4150
4151       tree_view->priv->anchor =
4152         gtk_tree_row_reference_new_proxy (G_OBJECT (tree_view),
4153                                           tree_view->priv->model,
4154                                           tmp_path);
4155
4156       gtk_tree_path_free (tmp_path);
4157
4158       /* ... and the cursor to the end path */
4159       tmp_path = _gtk_tree_path_new_from_rbtree (tree_view->priv->rubber_band_end_tree,
4160                                                  tree_view->priv->rubber_band_end_node);
4161       gtk_tree_view_real_set_cursor (GTK_TREE_VIEW (tree_view), tmp_path, 0);
4162       gtk_tree_path_free (tmp_path);
4163
4164       _gtk_tree_selection_emit_changed (tree_view->priv->selection);
4165     }
4166
4167   /* Clear status variables */
4168   tree_view->priv->rubber_band_status = RUBBER_BAND_OFF;
4169   tree_view->priv->rubber_band_extend = FALSE;
4170   tree_view->priv->rubber_band_modify = FALSE;
4171
4172   tree_view->priv->rubber_band_start_node = NULL;
4173   tree_view->priv->rubber_band_start_tree = NULL;
4174   tree_view->priv->rubber_band_end_node = NULL;
4175   tree_view->priv->rubber_band_end_tree = NULL;
4176 }
4177
4178 static void
4179 gtk_tree_view_update_rubber_band_selection_range (GtkTreeView *tree_view,
4180                                                  GtkRBTree   *start_tree,
4181                                                  GtkRBNode   *start_node,
4182                                                  GtkRBTree   *end_tree,
4183                                                  GtkRBNode   *end_node,
4184                                                  gboolean     select,
4185                                                  gboolean     skip_start,
4186                                                  gboolean     skip_end)
4187 {
4188   if (start_node == end_node)
4189     return;
4190
4191   /* We skip the first node and jump inside the loop */
4192   if (skip_start)
4193     goto skip_first;
4194
4195   do
4196     {
4197       /* Small optimization by assuming insensitive nodes are never
4198        * selected.
4199        */
4200       if (!GTK_RBNODE_FLAG_SET (start_node, GTK_RBNODE_IS_SELECTED))
4201         {
4202           GtkTreePath *path;
4203           gboolean selectable;
4204
4205           path = _gtk_tree_path_new_from_rbtree (start_tree, start_node);
4206           selectable = _gtk_tree_selection_row_is_selectable (tree_view->priv->selection, start_node, path);
4207           gtk_tree_path_free (path);
4208
4209           if (!selectable)
4210             goto node_not_selectable;
4211         }
4212
4213       if (select)
4214         {
4215           if (tree_view->priv->rubber_band_extend)
4216             GTK_RBNODE_SET_FLAG (start_node, GTK_RBNODE_IS_SELECTED);
4217           else if (tree_view->priv->rubber_band_modify)
4218             {
4219               /* Toggle the selection state */
4220               if (GTK_RBNODE_FLAG_SET (start_node, GTK_RBNODE_IS_SELECTED))
4221                 GTK_RBNODE_UNSET_FLAG (start_node, GTK_RBNODE_IS_SELECTED);
4222               else
4223                 GTK_RBNODE_SET_FLAG (start_node, GTK_RBNODE_IS_SELECTED);
4224             }
4225           else
4226             GTK_RBNODE_SET_FLAG (start_node, GTK_RBNODE_IS_SELECTED);
4227         }
4228       else
4229         {
4230           /* Mirror the above */
4231           if (tree_view->priv->rubber_band_extend)
4232             GTK_RBNODE_UNSET_FLAG (start_node, GTK_RBNODE_IS_SELECTED);
4233           else if (tree_view->priv->rubber_band_modify)
4234             {
4235               /* Toggle the selection state */
4236               if (GTK_RBNODE_FLAG_SET (start_node, GTK_RBNODE_IS_SELECTED))
4237                 GTK_RBNODE_UNSET_FLAG (start_node, GTK_RBNODE_IS_SELECTED);
4238               else
4239                 GTK_RBNODE_SET_FLAG (start_node, GTK_RBNODE_IS_SELECTED);
4240             }
4241           else
4242             GTK_RBNODE_UNSET_FLAG (start_node, GTK_RBNODE_IS_SELECTED);
4243         }
4244
4245       _gtk_tree_view_queue_draw_node (tree_view, start_tree, start_node, NULL);
4246
4247 node_not_selectable:
4248       if (start_node == end_node)
4249         break;
4250
4251 skip_first:
4252
4253       if (start_node->children)
4254         {
4255           start_tree = start_node->children;
4256           start_node = _gtk_rbtree_first (start_tree);
4257         }
4258       else
4259         {
4260           _gtk_rbtree_next_full (start_tree, start_node, &start_tree, &start_node);
4261
4262           if (!start_tree)
4263             /* Ran out of tree */
4264             break;
4265         }
4266
4267       if (skip_end && start_node == end_node)
4268         break;
4269     }
4270   while (TRUE);
4271 }
4272
4273 static void
4274 gtk_tree_view_update_rubber_band_selection (GtkTreeView *tree_view)
4275 {
4276   GtkRBTree *start_tree, *end_tree;
4277   GtkRBNode *start_node, *end_node;
4278
4279   _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);
4280   _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);
4281
4282   /* Handle the start area first */
4283   if (!tree_view->priv->rubber_band_start_node)
4284     {
4285       gtk_tree_view_update_rubber_band_selection_range (tree_view,
4286                                                        start_tree,
4287                                                        start_node,
4288                                                        end_tree,
4289                                                        end_node,
4290                                                        TRUE,
4291                                                        FALSE,
4292                                                        FALSE);
4293     }
4294   else if (_gtk_rbtree_node_find_offset (start_tree, start_node) <
4295            _gtk_rbtree_node_find_offset (tree_view->priv->rubber_band_start_tree, tree_view->priv->rubber_band_start_node))
4296     {
4297       /* New node is above the old one; selection became bigger */
4298       gtk_tree_view_update_rubber_band_selection_range (tree_view,
4299                                                        start_tree,
4300                                                        start_node,
4301                                                        tree_view->priv->rubber_band_start_tree,
4302                                                        tree_view->priv->rubber_band_start_node,
4303                                                        TRUE,
4304                                                        FALSE,
4305                                                        TRUE);
4306     }
4307   else if (_gtk_rbtree_node_find_offset (start_tree, start_node) >
4308            _gtk_rbtree_node_find_offset (tree_view->priv->rubber_band_start_tree, tree_view->priv->rubber_band_start_node))
4309     {
4310       /* New node is below the old one; selection became smaller */
4311       gtk_tree_view_update_rubber_band_selection_range (tree_view,
4312                                                        tree_view->priv->rubber_band_start_tree,
4313                                                        tree_view->priv->rubber_band_start_node,
4314                                                        start_tree,
4315                                                        start_node,
4316                                                        FALSE,
4317                                                        FALSE,
4318                                                        TRUE);
4319     }
4320
4321   tree_view->priv->rubber_band_start_tree = start_tree;
4322   tree_view->priv->rubber_band_start_node = start_node;
4323
4324   /* Next, handle the end area */
4325   if (!tree_view->priv->rubber_band_end_node)
4326     {
4327       /* In the event this happens, start_node was also NULL; this case is
4328        * handled above.
4329        */
4330     }
4331   else if (!end_node)
4332     {
4333       /* Find the last node in the tree */
4334       _gtk_rbtree_find_offset (tree_view->priv->tree, tree_view->priv->height - 1,
4335                                &end_tree, &end_node);
4336
4337       /* Selection reached end of the tree */
4338       gtk_tree_view_update_rubber_band_selection_range (tree_view,
4339                                                        tree_view->priv->rubber_band_end_tree,
4340                                                        tree_view->priv->rubber_band_end_node,
4341                                                        end_tree,
4342                                                        end_node,
4343                                                        TRUE,
4344                                                        TRUE,
4345                                                        FALSE);
4346     }
4347   else if (_gtk_rbtree_node_find_offset (end_tree, end_node) >
4348            _gtk_rbtree_node_find_offset (tree_view->priv->rubber_band_end_tree, tree_view->priv->rubber_band_end_node))
4349     {
4350       /* New node is below the old one; selection became bigger */
4351       gtk_tree_view_update_rubber_band_selection_range (tree_view,
4352                                                        tree_view->priv->rubber_band_end_tree,
4353                                                        tree_view->priv->rubber_band_end_node,
4354                                                        end_tree,
4355                                                        end_node,
4356                                                        TRUE,
4357                                                        TRUE,
4358                                                        FALSE);
4359     }
4360   else if (_gtk_rbtree_node_find_offset (end_tree, end_node) <
4361            _gtk_rbtree_node_find_offset (tree_view->priv->rubber_band_end_tree, tree_view->priv->rubber_band_end_node))
4362     {
4363       /* New node is above the old one; selection became smaller */
4364       gtk_tree_view_update_rubber_band_selection_range (tree_view,
4365                                                        end_tree,
4366                                                        end_node,
4367                                                        tree_view->priv->rubber_band_end_tree,
4368                                                        tree_view->priv->rubber_band_end_node,
4369                                                        FALSE,
4370                                                        TRUE,
4371                                                        FALSE);
4372     }
4373
4374   tree_view->priv->rubber_band_end_tree = end_tree;
4375   tree_view->priv->rubber_band_end_node = end_node;
4376 }
4377
4378 static void
4379 gtk_tree_view_update_rubber_band (GtkTreeView *tree_view)
4380 {
4381   gint x, y;
4382   GdkRectangle old_area;
4383   GdkRectangle new_area;
4384   GdkRectangle common;
4385   cairo_region_t *invalid_region;
4386
4387   old_area.x = MIN (tree_view->priv->press_start_x, tree_view->priv->rubber_band_x);
4388   old_area.y = MIN (tree_view->priv->press_start_y, tree_view->priv->rubber_band_y) - tree_view->priv->dy;
4389   old_area.width = ABS (tree_view->priv->rubber_band_x - tree_view->priv->press_start_x) + 1;
4390   old_area.height = ABS (tree_view->priv->rubber_band_y - tree_view->priv->press_start_y) + 1;
4391
4392   gdk_window_get_device_position (tree_view->priv->bin_window,
4393                                   gdk_device_manager_get_client_pointer (
4394                                     gdk_display_get_device_manager (
4395                                       gtk_widget_get_display (GTK_WIDGET (tree_view)))),
4396                                   &x, &y, NULL);
4397
4398   x = MAX (x, 0);
4399   y = MAX (y, 0) + tree_view->priv->dy;
4400
4401   new_area.x = MIN (tree_view->priv->press_start_x, x);
4402   new_area.y = MIN (tree_view->priv->press_start_y, y) - tree_view->priv->dy;
4403   new_area.width = ABS (x - tree_view->priv->press_start_x) + 1;
4404   new_area.height = ABS (y - tree_view->priv->press_start_y) + 1;
4405
4406   invalid_region = cairo_region_create_rectangle (&old_area);
4407   cairo_region_union_rectangle (invalid_region, &new_area);
4408
4409   gdk_rectangle_intersect (&old_area, &new_area, &common);
4410   if (common.width > 2 && common.height > 2)
4411     {
4412       cairo_region_t *common_region;
4413
4414       /* make sure the border is invalidated */
4415       common.x += 1;
4416       common.y += 1;
4417       common.width -= 2;
4418       common.height -= 2;
4419
4420       common_region = cairo_region_create_rectangle (&common);
4421
4422       cairo_region_subtract (invalid_region, common_region);
4423       cairo_region_destroy (common_region);
4424     }
4425
4426   gdk_window_invalidate_region (tree_view->priv->bin_window, invalid_region, TRUE);
4427
4428   cairo_region_destroy (invalid_region);
4429
4430   tree_view->priv->rubber_band_x = x;
4431   tree_view->priv->rubber_band_y = y;
4432
4433   gtk_tree_view_update_rubber_band_selection (tree_view);
4434 }
4435
4436 static void
4437 gtk_tree_view_paint_rubber_band (GtkTreeView  *tree_view,
4438                                  cairo_t      *cr)
4439 {
4440   GdkRectangle rect;
4441   GtkStyleContext *context;
4442
4443   cairo_save (cr);
4444
4445   context = gtk_widget_get_style_context (GTK_WIDGET (tree_view));
4446
4447   gtk_style_context_save (context);
4448   gtk_style_context_add_class (context, GTK_STYLE_CLASS_RUBBERBAND);
4449
4450   rect.x = MIN (tree_view->priv->press_start_x, tree_view->priv->rubber_band_x);
4451   rect.y = MIN (tree_view->priv->press_start_y, tree_view->priv->rubber_band_y) - tree_view->priv->dy;
4452   rect.width = ABS (tree_view->priv->press_start_x - tree_view->priv->rubber_band_x) + 1;
4453   rect.height = ABS (tree_view->priv->press_start_y - tree_view->priv->rubber_band_y) + 1;
4454
4455   gdk_cairo_rectangle (cr, &rect);
4456   cairo_clip (cr);
4457
4458   gtk_render_background (context, cr,
4459                          rect.x, rect.y,
4460                          rect.width, rect.height);
4461   gtk_render_frame (context, cr,
4462                     rect.x, rect.y,
4463                     rect.width, rect.height);
4464
4465   gtk_style_context_restore (context);
4466   cairo_restore (cr);
4467 }
4468
4469 static gboolean
4470 gtk_tree_view_motion_bin_window (GtkWidget      *widget,
4471                                  GdkEventMotion *event)
4472 {
4473   GtkTreeView *tree_view;
4474   GtkRBTree *tree;
4475   GtkRBNode *node;
4476   gint new_y;
4477
4478   tree_view = (GtkTreeView *) widget;
4479
4480   if (tree_view->priv->tree == NULL)
4481     return FALSE;
4482
4483   if (tree_view->priv->rubber_band_status == RUBBER_BAND_MAYBE_START)
4484     {
4485       gtk_grab_add (GTK_WIDGET (tree_view));
4486       gtk_tree_view_update_rubber_band (tree_view);
4487
4488       tree_view->priv->rubber_band_status = RUBBER_BAND_ACTIVE;
4489     }
4490   else if (tree_view->priv->rubber_band_status == RUBBER_BAND_ACTIVE)
4491     {
4492       gtk_tree_view_update_rubber_band (tree_view);
4493
4494       add_scroll_timeout (tree_view);
4495     }
4496
4497   /* only check for an initiated drag when a button is pressed */
4498   if (tree_view->priv->pressed_button >= 0
4499       && !tree_view->priv->rubber_band_status)
4500     gtk_tree_view_maybe_begin_dragging_row (tree_view, event);
4501
4502   new_y = TREE_WINDOW_Y_TO_RBTREE_Y(tree_view, event->y);
4503   if (new_y < 0)
4504     new_y = 0;
4505
4506   _gtk_rbtree_find_offset (tree_view->priv->tree, new_y, &tree, &node);
4507
4508   /* If we are currently pressing down a button, we don't want to prelight anything else. */
4509   if ((tree_view->priv->button_pressed_node != NULL) &&
4510       (tree_view->priv->button_pressed_node != node))
4511     node = NULL;
4512
4513   tree_view->priv->event_last_x = event->x;
4514   tree_view->priv->event_last_y = event->y;
4515
4516   prelight_or_select (tree_view, tree, node, event->x, event->y);
4517
4518   return TRUE;
4519 }
4520
4521 static gboolean
4522 gtk_tree_view_motion (GtkWidget      *widget,
4523                       GdkEventMotion *event)
4524 {
4525   GtkTreeView *tree_view;
4526
4527   tree_view = (GtkTreeView *) widget;
4528
4529   /* Resizing a column */
4530   if (tree_view->priv->in_column_resize)
4531     return gtk_tree_view_motion_resize_column (widget, event);
4532
4533   /* Drag column */
4534   if (tree_view->priv->in_column_drag)
4535     return gtk_tree_view_motion_drag_column (widget, event);
4536
4537   /* Sanity check it */
4538   if (event->window == tree_view->priv->bin_window)
4539     return gtk_tree_view_motion_bin_window (widget, event);
4540
4541   return FALSE;
4542 }
4543
4544 /* Invalidate the focus rectangle near the edge of the bin_window; used when
4545  * the tree is empty.
4546  */
4547 static void
4548 invalidate_empty_focus (GtkTreeView *tree_view)
4549 {
4550   GdkRectangle area;
4551
4552   if (!gtk_widget_has_focus (GTK_WIDGET (tree_view)))
4553     return;
4554
4555   area.x = 0;
4556   area.y = 0;
4557   area.width = gdk_window_get_width (tree_view->priv->bin_window);
4558   area.height = gdk_window_get_height (tree_view->priv->bin_window);
4559   gdk_window_invalidate_rect (tree_view->priv->bin_window, &area, FALSE);
4560 }
4561
4562 /* Draws a focus rectangle near the edge of the bin_window; used when the tree
4563  * is empty.
4564  */
4565 static void
4566 draw_empty_focus (GtkTreeView *tree_view, cairo_t *cr)
4567 {
4568   GtkWidget *widget = GTK_WIDGET (tree_view);
4569   gint w, h;
4570
4571   if (!gtk_widget_has_visible_focus (widget))
4572     return;
4573
4574   w = gdk_window_get_width (tree_view->priv->bin_window) - 2;
4575   h = gdk_window_get_height (tree_view->priv->bin_window) - 2;
4576
4577   if (w > 0 && h > 0)
4578     {
4579       GtkStyleContext *context;
4580
4581       context = gtk_widget_get_style_context (widget);
4582
4583       gtk_render_focus (context, cr, 1, 1, w, h);
4584     }
4585 }
4586
4587 typedef enum {
4588   GTK_TREE_VIEW_GRID_LINE,
4589   GTK_TREE_VIEW_TREE_LINE,
4590   GTK_TREE_VIEW_FOREGROUND_LINE
4591 } GtkTreeViewLineType;
4592
4593 static void
4594 gtk_tree_view_draw_line (GtkTreeView         *tree_view,
4595                          cairo_t             *cr,
4596                          GtkTreeViewLineType  type,
4597                          int                  x1,
4598                          int                  y1,
4599                          int                  x2,
4600                          int                  y2)
4601 {
4602   cairo_save (cr);
4603
4604   switch (type)
4605     {
4606     case GTK_TREE_VIEW_TREE_LINE:
4607       cairo_set_source_rgb (cr, 0, 0, 0);
4608       cairo_set_line_width (cr, tree_view->priv->tree_line_width);
4609       if (tree_view->priv->tree_line_dashes[0])
4610         cairo_set_dash (cr,
4611                         tree_view->priv->tree_line_dashes,
4612                         2, 0.5);
4613       break;
4614     case GTK_TREE_VIEW_GRID_LINE:
4615       cairo_set_source_rgb (cr, 0, 0, 0);
4616       cairo_set_line_width (cr, tree_view->priv->grid_line_width);
4617       if (tree_view->priv->grid_line_dashes[0])
4618         cairo_set_dash (cr,
4619                         tree_view->priv->grid_line_dashes,
4620                         2, 0.5);
4621       break;
4622     default:
4623       g_assert_not_reached ();
4624       /* fall through */
4625     case GTK_TREE_VIEW_FOREGROUND_LINE:
4626       {
4627         GtkStyleContext *context;
4628         GtkStateFlags state;
4629         GdkRGBA color;
4630
4631         context = gtk_widget_get_style_context (GTK_WIDGET (tree_view));
4632         state = gtk_widget_get_state_flags (GTK_WIDGET (tree_view));
4633
4634         cairo_set_line_width (cr, 1.0);
4635         gtk_style_context_get_color (context, state, &color);
4636         gdk_cairo_set_source_rgba (cr, &color);
4637       }
4638
4639       break;
4640     }
4641
4642   cairo_move_to (cr, x1 + 0.5, y1 + 0.5);
4643   cairo_line_to (cr, x2 + 0.5, y2 + 0.5);
4644   cairo_stroke (cr);
4645
4646   cairo_restore (cr);
4647 }
4648
4649 static void
4650 gtk_tree_view_draw_grid_lines (GtkTreeView    *tree_view,
4651                                cairo_t        *cr,
4652                                gint            n_visible_columns)
4653 {
4654   GList *list = tree_view->priv->columns;
4655   gint i = 0;
4656   gint current_x = 0;
4657
4658   if (tree_view->priv->grid_lines != GTK_TREE_VIEW_GRID_LINES_VERTICAL
4659       && tree_view->priv->grid_lines != GTK_TREE_VIEW_GRID_LINES_BOTH)
4660     return;
4661
4662   /* Only draw the lines for visible rows and columns */
4663   for (list = tree_view->priv->columns; list; list = list->next, i++)
4664     {
4665       GtkTreeViewColumn *column = list->data;
4666
4667       /* We don't want a line for the last column */
4668       if (i == n_visible_columns - 1)
4669         break;
4670
4671       if (!gtk_tree_view_column_get_visible (column))
4672         continue;
4673
4674       current_x += gtk_tree_view_column_get_width (column);
4675
4676       gtk_tree_view_draw_line (tree_view, cr,
4677                                GTK_TREE_VIEW_GRID_LINE,
4678                                current_x - 1, 0,
4679                                current_x - 1, tree_view->priv->height);
4680     }
4681 }
4682
4683 /* Warning: Very scary function.
4684  * Modify at your own risk
4685  *
4686  * KEEP IN SYNC WITH gtk_tree_view_create_row_drag_icon()!
4687  * FIXME: It's not...
4688  */
4689 static gboolean
4690 gtk_tree_view_bin_draw (GtkWidget      *widget,
4691                         cairo_t        *cr)
4692 {
4693   GtkTreeView *tree_view = GTK_TREE_VIEW (widget);
4694   GtkTreePath *path;
4695   GtkRBTree *tree;
4696   GList *list;
4697   GtkRBNode *node;
4698   GtkRBNode *drag_highlight = NULL;
4699   GtkRBTree *drag_highlight_tree = NULL;
4700   GtkTreeIter iter;
4701   gint new_y;
4702   gint y_offset, cell_offset;
4703   gint max_height;
4704   gint depth;
4705   GdkRectangle background_area;
4706   GdkRectangle cell_area;
4707   GdkRectangle clip;
4708   guint flags;
4709   gint highlight_x;
4710   gint expander_cell_width;
4711   gint bin_window_width;
4712   gint bin_window_height;
4713   GtkTreePath *drag_dest_path;
4714   GList *first_column, *last_column;
4715   gint vertical_separator;
4716   gint horizontal_separator;
4717   gboolean allow_rules;
4718   gboolean has_can_focus_cell;
4719   gboolean rtl;
4720   gint n_visible_columns;
4721   gint grid_line_width;
4722   gint expander_size;
4723   gboolean draw_vgrid_lines, draw_hgrid_lines;
4724   GtkStyleContext *context;
4725   gboolean parity;
4726
4727   rtl = (gtk_widget_get_direction (widget) == GTK_TEXT_DIR_RTL);
4728   context = gtk_widget_get_style_context (widget);
4729
4730   gtk_widget_style_get (widget,
4731                         "horizontal-separator", &horizontal_separator,
4732                         "vertical-separator", &vertical_separator,
4733                         "allow-rules", &allow_rules,
4734                         NULL);
4735
4736   if (tree_view->priv->tree == NULL)
4737     {
4738       draw_empty_focus (tree_view, cr);
4739       return TRUE;
4740     }
4741
4742   bin_window_width = gdk_window_get_width (tree_view->priv->bin_window);
4743   bin_window_height = gdk_window_get_height (tree_view->priv->bin_window);
4744   cairo_rectangle (cr, 0, 0, bin_window_width, bin_window_height);
4745   cairo_clip (cr);
4746   if (!gdk_cairo_get_clip_rectangle (cr, &clip))
4747     return TRUE;
4748
4749   new_y = TREE_WINDOW_Y_TO_RBTREE_Y (tree_view, clip.y);
4750
4751   if (new_y < 0)
4752     new_y = 0;
4753   y_offset = -_gtk_rbtree_find_offset (tree_view->priv->tree, new_y, &tree, &node);
4754
4755   if (tree_view->priv->height < bin_window_height)
4756     {
4757       gtk_style_context_save (context);
4758       gtk_style_context_add_class (context, GTK_STYLE_CLASS_CELL);
4759
4760       gtk_render_background (context, cr,
4761                              0, tree_view->priv->height,
4762                              bin_window_width,
4763                              bin_window_height - tree_view->priv->height);
4764
4765       gtk_style_context_restore (context);
4766     }
4767
4768   if (node == NULL)
4769     return TRUE;
4770
4771   /* find the path for the node */
4772   path = _gtk_tree_path_new_from_rbtree (tree, node);
4773   gtk_tree_model_get_iter (tree_view->priv->model,
4774                            &iter,
4775                            path);
4776   depth = gtk_tree_path_get_depth (path);
4777   gtk_tree_path_free (path);
4778
4779   drag_dest_path = NULL;
4780
4781   if (tree_view->priv->drag_dest_row)
4782     drag_dest_path = gtk_tree_row_reference_get_path (tree_view->priv->drag_dest_row);
4783
4784   if (drag_dest_path)
4785     _gtk_tree_view_find_node (tree_view, drag_dest_path,
4786                               &drag_highlight_tree, &drag_highlight);
4787
4788   draw_vgrid_lines =
4789     tree_view->priv->grid_lines == GTK_TREE_VIEW_GRID_LINES_VERTICAL
4790     || tree_view->priv->grid_lines == GTK_TREE_VIEW_GRID_LINES_BOTH;
4791   draw_hgrid_lines =
4792     tree_view->priv->grid_lines == GTK_TREE_VIEW_GRID_LINES_HORIZONTAL
4793     || tree_view->priv->grid_lines == GTK_TREE_VIEW_GRID_LINES_BOTH;
4794   expander_size = gtk_tree_view_get_expander_size (tree_view);
4795
4796   if (draw_vgrid_lines || draw_hgrid_lines)
4797     gtk_widget_style_get (widget, "grid-line-width", &grid_line_width, NULL);
4798
4799   n_visible_columns = 0;
4800   for (list = tree_view->priv->columns; list; list = list->next)
4801     {
4802       if (!gtk_tree_view_column_get_visible (GTK_TREE_VIEW_COLUMN (list->data)))
4803         continue;
4804       n_visible_columns ++;
4805     }
4806
4807   /* Find the last column */
4808   for (last_column = g_list_last (tree_view->priv->columns);
4809        last_column &&
4810        !(gtk_tree_view_column_get_visible (GTK_TREE_VIEW_COLUMN (last_column->data)));
4811        last_column = last_column->prev)
4812     ;
4813
4814   /* and the first */
4815   for (first_column = g_list_first (tree_view->priv->columns);
4816        first_column &&
4817        !(gtk_tree_view_column_get_visible (GTK_TREE_VIEW_COLUMN (first_column->data)));
4818        first_column = first_column->next)
4819     ;
4820
4821   /* Actually process the expose event.  To do this, we want to
4822    * start at the first node of the event, and walk the tree in
4823    * order, drawing each successive node.
4824    */
4825
4826   parity = !(_gtk_rbtree_node_get_index (tree, node) % 2);
4827
4828   do
4829     {
4830       gboolean is_separator = FALSE;
4831       gboolean is_first = FALSE;
4832       gboolean is_last = FALSE;
4833       gint n_col = 0;
4834
4835       parity = !parity;
4836       is_separator = row_is_separator (tree_view, &iter, NULL);
4837
4838       max_height = gtk_tree_view_get_row_height (tree_view, node);
4839
4840       cell_offset = 0;
4841       highlight_x = 0; /* should match x coord of first cell */
4842       expander_cell_width = 0;
4843
4844       background_area.y = y_offset + clip.y;
4845       background_area.height = max_height;
4846
4847       flags = 0;
4848
4849       if (GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_PRELIT))
4850         flags |= GTK_CELL_RENDERER_PRELIT;
4851
4852       if (GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_SELECTED))
4853         flags |= GTK_CELL_RENDERER_SELECTED;
4854
4855       /* we *need* to set cell data on all cells before the call
4856        * to _has_can_focus_cell, else _has_can_focus_cell() does not
4857        * return a correct value.
4858        */
4859       for (list = (rtl ? g_list_last (tree_view->priv->columns) : g_list_first (tree_view->priv->columns));
4860            list;
4861            list = (rtl ? list->prev : list->next))
4862         {
4863           GtkTreeViewColumn *column = list->data;
4864           gtk_tree_view_column_cell_set_cell_data (column,
4865                                                    tree_view->priv->model,
4866                                                    &iter,
4867                                                    GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_PARENT),
4868                                                    node->children?TRUE:FALSE);
4869         }
4870
4871       has_can_focus_cell = gtk_tree_view_has_can_focus_cell (tree_view);
4872
4873       for (list = (rtl ? g_list_last (tree_view->priv->columns) : g_list_first (tree_view->priv->columns));
4874            list;
4875            list = (rtl ? list->prev : list->next))
4876         {
4877           GtkTreeViewColumn *column = list->data;
4878           GtkRegionFlags row_flags = 0, column_flags = 0;
4879           GtkStateFlags state = 0;
4880           gint width;
4881           gboolean draw_focus;
4882
4883           if (!gtk_tree_view_column_get_visible (column))
4884             continue;
4885
4886           n_col++;
4887           width = gtk_tree_view_column_get_width (column);
4888
4889           if (cell_offset > clip.x + clip.width ||
4890               cell_offset + width < clip.x)
4891             {
4892               cell_offset += width;
4893               continue;
4894             }
4895
4896           if (gtk_tree_view_column_get_sort_indicator (column))
4897             flags |= GTK_CELL_RENDERER_SORTED;
4898           else
4899             flags &= ~GTK_CELL_RENDERER_SORTED;
4900
4901           if (tree_view->priv->cursor_node == node)
4902             flags |= GTK_CELL_RENDERER_FOCUSED;
4903           else
4904             flags &= ~GTK_CELL_RENDERER_FOCUSED;
4905
4906           if (GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_PARENT))
4907             flags |= GTK_CELL_RENDERER_EXPANDABLE;
4908           else
4909             flags &= ~GTK_CELL_RENDERER_EXPANDABLE;
4910
4911           if (node->children)
4912             flags |= GTK_CELL_RENDERER_EXPANDED;
4913           else
4914             flags &= ~GTK_CELL_RENDERER_EXPANDED;
4915
4916           background_area.x = cell_offset;
4917           background_area.width = width;
4918
4919           cell_area = background_area;
4920           cell_area.y += vertical_separator / 2;
4921           cell_area.x += horizontal_separator / 2;
4922           cell_area.height -= vertical_separator;
4923           cell_area.width -= horizontal_separator;
4924
4925           if (draw_vgrid_lines)
4926             {
4927               if (list == first_column)
4928                 {
4929                   cell_area.width -= grid_line_width / 2;
4930                 }
4931               else if (list == last_column)
4932                 {
4933                   cell_area.x += grid_line_width / 2;
4934                   cell_area.width -= grid_line_width / 2;
4935                 }
4936               else
4937                 {
4938                   cell_area.x += grid_line_width / 2;
4939                   cell_area.width -= grid_line_width;
4940                 }
4941             }
4942
4943           if (draw_hgrid_lines)
4944             {
4945               cell_area.y += grid_line_width / 2;
4946               cell_area.height -= grid_line_width;
4947             }
4948
4949           if (!gdk_rectangle_intersect (&clip, &background_area, NULL))
4950             {
4951               cell_offset += gtk_tree_view_column_get_width (column);
4952               continue;
4953             }
4954
4955           gtk_tree_view_column_cell_set_cell_data (column,
4956                                                    tree_view->priv->model,
4957                                                    &iter,
4958                                                    GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_PARENT),
4959                                                    node->children?TRUE:FALSE);
4960
4961           /* Select the detail for drawing the cell.  relevant
4962            * factors are parity, sortedness, and whether to
4963            * display rules.
4964            */
4965           if (allow_rules && tree_view->priv->has_rules)
4966             {
4967               if (parity)
4968                 row_flags |= GTK_REGION_ODD;
4969               else
4970                 row_flags |= GTK_REGION_EVEN;
4971             }
4972
4973           if ((flags & GTK_CELL_RENDERER_SORTED) &&
4974               n_visible_columns >= 3)
4975             column_flags |= GTK_REGION_SORTED;
4976
4977           is_first = (rtl ? !list->next : !list->prev);
4978           is_last = (rtl ? !list->prev : !list->next);
4979
4980           if (is_first)
4981             column_flags |= GTK_REGION_FIRST;
4982
4983           if (is_last)
4984             column_flags |= GTK_REGION_LAST;
4985
4986           if ((n_col % 2) == 0)
4987             column_flags |= GTK_REGION_EVEN;
4988           else
4989             column_flags |= GTK_REGION_ODD;
4990
4991           gtk_style_context_save (context);
4992
4993           state = gtk_cell_renderer_get_state (NULL, widget, flags);
4994           gtk_style_context_set_state (context, state);
4995
4996           gtk_style_context_add_class (context, GTK_STYLE_CLASS_CELL);
4997           gtk_style_context_add_region (context, GTK_STYLE_REGION_ROW, row_flags);
4998           gtk_style_context_add_region (context, GTK_STYLE_REGION_COLUMN, column_flags);
4999
5000           if (node == tree_view->priv->cursor_node && has_can_focus_cell
5001               && ((column == tree_view->priv->focus_column
5002                    && tree_view->priv->draw_keyfocus &&
5003                    gtk_widget_has_visible_focus (widget))
5004                   || (column == tree_view->priv->edited_column)))
5005             draw_focus = TRUE;
5006           else
5007             draw_focus = FALSE;
5008
5009           /* Draw background */
5010           gtk_render_background (context, cr,
5011                                  background_area.x,
5012                                  background_area.y,
5013                                  background_area.width,
5014                                  background_area.height);
5015
5016           /* Draw frame */
5017           gtk_render_frame (context, cr,
5018                             background_area.x,
5019                             background_area.y,
5020                             background_area.width,
5021                             background_area.height);
5022
5023           if (gtk_tree_view_is_expander_column (tree_view, column))
5024             {
5025               if (!rtl)
5026                 cell_area.x += (depth - 1) * tree_view->priv->level_indentation;
5027               cell_area.width -= (depth - 1) * tree_view->priv->level_indentation;
5028
5029               if (gtk_tree_view_draw_expanders (tree_view))
5030                 {
5031                   int expander_size = gtk_tree_view_get_expander_size (tree_view);
5032                   if (!rtl)
5033                     cell_area.x += depth * expander_size;
5034                   cell_area.width -= depth * expander_size;
5035                 }
5036
5037               /* If we have an expander column, the highlight underline
5038                * starts with that column, so that it indicates which
5039                * level of the tree we're dropping at.
5040                */
5041               highlight_x = cell_area.x;
5042               expander_cell_width = cell_area.width;
5043
5044               if (is_separator)
5045                 {
5046                   gtk_style_context_save (context);
5047                   gtk_style_context_add_class (context, GTK_STYLE_CLASS_SEPARATOR);
5048
5049                   gtk_render_line (context, cr,
5050                                    cell_area.x,
5051                                    cell_area.y + cell_area.height / 2,
5052                                    cell_area.x + cell_area.width,
5053                                    cell_area.y + cell_area.height / 2);
5054
5055                   gtk_style_context_restore (context);
5056                 }
5057               else
5058                 {
5059                   _gtk_tree_view_column_cell_render (column,
5060                                                      cr,
5061                                                      &background_area,
5062                                                      &cell_area,
5063                                                      flags,
5064                                                      draw_focus);
5065                 }
5066
5067               if (gtk_tree_view_draw_expanders (tree_view)
5068                   && (node->flags & GTK_RBNODE_IS_PARENT) == GTK_RBNODE_IS_PARENT)
5069                 {
5070                   gtk_tree_view_draw_arrow (GTK_TREE_VIEW (widget),
5071                                             cr,
5072                                             tree,
5073                                             node);
5074                 }
5075             }
5076           else
5077             {
5078               if (is_separator)
5079                 {
5080                   gtk_style_context_save (context);
5081                   gtk_style_context_add_class (context, GTK_STYLE_CLASS_SEPARATOR);
5082
5083                   gtk_render_line (context, cr,
5084                                    cell_area.x,
5085                                    cell_area.y + cell_area.height / 2,
5086                                    cell_area.x + cell_area.width,
5087                                    cell_area.y + cell_area.height / 2);
5088
5089                   gtk_style_context_restore (context);
5090                 }
5091               else
5092                 _gtk_tree_view_column_cell_render (column,
5093                                                    cr,
5094                                                    &background_area,
5095                                                    &cell_area,
5096                                                    flags,
5097                                                    draw_focus);
5098             }
5099
5100           if (draw_hgrid_lines)
5101             {
5102               if (background_area.y > 0)
5103                 gtk_tree_view_draw_line (tree_view, cr,
5104                                          GTK_TREE_VIEW_GRID_LINE,
5105                                          background_area.x, background_area.y,
5106                                          background_area.x + background_area.width,
5107                                          background_area.y);
5108
5109               if (y_offset + max_height >= clip.height)
5110                 gtk_tree_view_draw_line (tree_view, cr,
5111                                          GTK_TREE_VIEW_GRID_LINE,
5112                                          background_area.x, background_area.y + max_height,
5113                                          background_area.x + background_area.width,
5114                                          background_area.y + max_height);
5115             }
5116
5117           if (gtk_tree_view_is_expander_column (tree_view, column) &&
5118               tree_view->priv->tree_lines_enabled)
5119             {
5120               gint x = background_area.x;
5121               gint mult = rtl ? -1 : 1;
5122               gint y0 = background_area.y;
5123               gint y1 = background_area.y + background_area.height/2;
5124               gint y2 = background_area.y + background_area.height;
5125
5126               if (rtl)
5127                 x += background_area.width - 1;
5128
5129               if ((node->flags & GTK_RBNODE_IS_PARENT) == GTK_RBNODE_IS_PARENT
5130                   && depth > 1)
5131                 {
5132                   gtk_tree_view_draw_line (tree_view, cr,
5133                                            GTK_TREE_VIEW_TREE_LINE,
5134                                            x + expander_size * (depth - 1.5) * mult,
5135                                            y1,
5136                                            x + expander_size * (depth - 1.1) * mult,
5137                                            y1);
5138                 }
5139               else if (depth > 1)
5140                 {
5141                   gtk_tree_view_draw_line (tree_view, cr,
5142                                            GTK_TREE_VIEW_TREE_LINE,
5143                                            x + expander_size * (depth - 1.5) * mult,
5144                                            y1,
5145                                            x + expander_size * (depth - 0.5) * mult,
5146                                            y1);
5147                 }
5148
5149               if (depth > 1)
5150                 {
5151                   gint i;
5152                   GtkRBNode *tmp_node;
5153                   GtkRBTree *tmp_tree;
5154
5155                   if (!_gtk_rbtree_next (tree, node))
5156                     gtk_tree_view_draw_line (tree_view, cr,
5157                                              GTK_TREE_VIEW_TREE_LINE,
5158                                              x + expander_size * (depth - 1.5) * mult,
5159                                              y0,
5160                                              x + expander_size * (depth - 1.5) * mult,
5161                                              y1);
5162                   else
5163                     gtk_tree_view_draw_line (tree_view, cr,
5164                                              GTK_TREE_VIEW_TREE_LINE,
5165                                              x + expander_size * (depth - 1.5) * mult,
5166                                              y0,
5167                                              x + expander_size * (depth - 1.5) * mult,
5168                                              y2);
5169
5170                   tmp_node = tree->parent_node;
5171                   tmp_tree = tree->parent_tree;
5172
5173                   for (i = depth - 2; i > 0; i--)
5174                     {
5175                       if (_gtk_rbtree_next (tmp_tree, tmp_node))
5176                         gtk_tree_view_draw_line (tree_view, cr,
5177                                                  GTK_TREE_VIEW_TREE_LINE,
5178                                                  x + expander_size * (i - 0.5) * mult,
5179                                                  y0,
5180                                                  x + expander_size * (i - 0.5) * mult,
5181                                                  y2);
5182
5183                       tmp_node = tmp_tree->parent_node;
5184                       tmp_tree = tmp_tree->parent_tree;
5185                     }
5186                 }
5187             }
5188
5189           gtk_style_context_restore (context);
5190           cell_offset += gtk_tree_view_column_get_width (column);
5191         }
5192
5193       if (node == drag_highlight)
5194         {
5195           /* Draw indicator for the drop
5196            */
5197           gint highlight_y = -1;
5198           GtkRBTree *tree = NULL;
5199           GtkRBNode *node = NULL;
5200
5201           gtk_style_context_save (context);
5202           gtk_style_context_add_class (context, GTK_STYLE_CLASS_DND);
5203
5204           switch (tree_view->priv->drag_dest_pos)
5205             {
5206             case GTK_TREE_VIEW_DROP_BEFORE:
5207               highlight_y = background_area.y - 1;
5208               if (highlight_y < 0)
5209                       highlight_y = 0;
5210               break;
5211
5212             case GTK_TREE_VIEW_DROP_AFTER:
5213               highlight_y = background_area.y + background_area.height - 1;
5214               break;
5215
5216             case GTK_TREE_VIEW_DROP_INTO_OR_BEFORE:
5217             case GTK_TREE_VIEW_DROP_INTO_OR_AFTER:
5218               _gtk_tree_view_find_node (tree_view, drag_dest_path, &tree, &node);
5219
5220               if (tree == NULL)
5221                 break;
5222
5223               gtk_render_frame (context, cr,
5224                                 0, gtk_tree_view_get_row_y_offset (tree_view, tree, node),
5225                                 gdk_window_get_width (tree_view->priv->bin_window),
5226                                 gtk_tree_view_get_row_height (tree_view, node));
5227               break;
5228             }
5229
5230           if (highlight_y >= 0)
5231             {
5232               gtk_tree_view_draw_line (tree_view, cr,
5233                                        GTK_TREE_VIEW_FOREGROUND_LINE,
5234                                        rtl ? highlight_x + expander_cell_width : highlight_x,
5235                                        highlight_y,
5236                                        rtl ? 0 : bin_window_width,
5237                                        highlight_y);
5238             }
5239
5240           gtk_style_context_restore (context);
5241         }
5242
5243       /* draw the big row-spanning focus rectangle, if needed */
5244       if (!has_can_focus_cell && node == tree_view->priv->cursor_node &&
5245           tree_view->priv->draw_keyfocus &&
5246           gtk_widget_has_visible_focus (widget))
5247         {
5248           gint tmp_y, tmp_height;
5249           GtkStateFlags focus_rect_state = 0;
5250
5251           gtk_style_context_save (context);
5252
5253           focus_rect_state = gtk_cell_renderer_get_state (NULL, widget, flags);
5254           gtk_style_context_set_state (context, focus_rect_state);
5255
5256           if (draw_hgrid_lines)
5257             {
5258               tmp_y = gtk_tree_view_get_row_y_offset (tree_view, tree, node) + grid_line_width / 2;
5259               tmp_height = gtk_tree_view_get_row_height (tree_view, node) - grid_line_width;
5260             }
5261           else
5262             {
5263               tmp_y = gtk_tree_view_get_row_y_offset (tree_view, tree, node);
5264               tmp_height = gtk_tree_view_get_row_height (tree_view, node);
5265             }
5266
5267           gtk_render_focus (context, cr,
5268                             0, tmp_y,
5269                             gdk_window_get_width (tree_view->priv->bin_window),
5270                             tmp_height);
5271
5272           gtk_style_context_restore (context);
5273         }
5274
5275       y_offset += max_height;
5276       if (node->children)
5277         {
5278           GtkTreeIter parent = iter;
5279           gboolean has_child;
5280
5281           tree = node->children;
5282           node = _gtk_rbtree_first (tree);
5283
5284           has_child = gtk_tree_model_iter_children (tree_view->priv->model,
5285                                                     &iter,
5286                                                     &parent);
5287           depth++;
5288
5289           /* Sanity Check! */
5290           TREE_VIEW_INTERNAL_ASSERT (has_child, FALSE);
5291         }
5292       else
5293         {
5294           gboolean done = FALSE;
5295
5296           do
5297             {
5298               node = _gtk_rbtree_next (tree, node);
5299               if (node != NULL)
5300                 {
5301                   gboolean has_next = gtk_tree_model_iter_next (tree_view->priv->model, &iter);
5302                   done = TRUE;
5303
5304                   /* Sanity Check! */
5305                   TREE_VIEW_INTERNAL_ASSERT (has_next, FALSE);
5306                 }
5307               else
5308                 {
5309                   GtkTreeIter parent_iter = iter;
5310                   gboolean has_parent;
5311
5312                   node = tree->parent_node;
5313                   tree = tree->parent_tree;
5314                   if (tree == NULL)
5315                     /* we should go to done to free some memory */
5316                     goto done;
5317                   has_parent = gtk_tree_model_iter_parent (tree_view->priv->model,
5318                                                            &iter,
5319                                                            &parent_iter);
5320                   depth--;
5321
5322                   /* Sanity check */
5323                   TREE_VIEW_INTERNAL_ASSERT (has_parent, FALSE);
5324                 }
5325             }
5326           while (!done);
5327         }
5328     }
5329   while (y_offset < clip.height);
5330
5331 done:
5332   gtk_tree_view_draw_grid_lines (tree_view, cr, n_visible_columns);
5333
5334   if (tree_view->priv->rubber_band_status == RUBBER_BAND_ACTIVE)
5335     gtk_tree_view_paint_rubber_band (tree_view, cr);
5336
5337   if (drag_dest_path)
5338     gtk_tree_path_free (drag_dest_path);
5339
5340   return FALSE;
5341 }
5342
5343 static gboolean
5344 gtk_tree_view_draw (GtkWidget *widget,
5345                     cairo_t   *cr)
5346 {
5347   GtkTreeView *tree_view = GTK_TREE_VIEW (widget);
5348   GtkWidget   *button;
5349   GtkStyleContext *context;
5350
5351   context = gtk_widget_get_style_context (widget);
5352   gtk_render_background (context, cr,
5353                          0, 0,
5354                          gtk_widget_get_allocated_width (widget),
5355                          gtk_widget_get_allocated_height (widget));
5356
5357   if (gtk_cairo_should_draw_window (cr, tree_view->priv->bin_window))
5358     {
5359       GList *tmp_list;
5360
5361       cairo_save (cr);
5362
5363       gtk_cairo_transform_to_window (cr, widget, tree_view->priv->bin_window);
5364       gtk_tree_view_bin_draw (widget, cr);
5365
5366       cairo_restore (cr);
5367
5368       /* We can't just chain up to Container::draw as it will try to send the
5369        * event to the headers, so we handle propagating it to our children
5370        * (eg. widgets being edited) ourselves.
5371        */
5372       tmp_list = tree_view->priv->children;
5373       while (tmp_list)
5374         {
5375           GtkTreeViewChild *child = tmp_list->data;
5376           tmp_list = tmp_list->next;
5377
5378           gtk_container_propagate_draw (GTK_CONTAINER (tree_view), child->widget, cr);
5379         }
5380     }
5381
5382   gtk_style_context_save (context);
5383   gtk_style_context_remove_class (context, GTK_STYLE_CLASS_VIEW);
5384
5385   if (gtk_cairo_should_draw_window (cr, tree_view->priv->header_window))
5386     {
5387       GList *list;
5388
5389       for (list = tree_view->priv->columns; list != NULL; list = list->next)
5390         {
5391           GtkTreeViewColumn *column = list->data;
5392
5393           if (column == tree_view->priv->drag_column)
5394             continue;
5395
5396           if (gtk_tree_view_column_get_visible (column))
5397             {
5398               button = gtk_tree_view_column_get_button (column);
5399               gtk_container_propagate_draw (GTK_CONTAINER (tree_view),
5400                                             button, cr);
5401             }
5402         }
5403     }
5404
5405   if (tree_view->priv->drag_window &&
5406       gtk_cairo_should_draw_window (cr, tree_view->priv->drag_window))
5407     {
5408       button = gtk_tree_view_column_get_button (tree_view->priv->drag_column);
5409       gtk_container_propagate_draw (GTK_CONTAINER (tree_view),
5410                                     button, cr);
5411     }
5412
5413   gtk_style_context_restore (context);
5414
5415   return FALSE;
5416 }
5417
5418 enum
5419 {
5420   DROP_HOME,
5421   DROP_RIGHT,
5422   DROP_LEFT,
5423   DROP_END
5424 };
5425
5426 /* returns 0x1 when no column has been found -- yes it's hackish */
5427 static GtkTreeViewColumn *
5428 gtk_tree_view_get_drop_column (GtkTreeView       *tree_view,
5429                                GtkTreeViewColumn *column,
5430                                gint               drop_position)
5431 {
5432   GtkTreeViewColumn *left_column = NULL;
5433   GtkTreeViewColumn *cur_column = NULL;
5434   GList *tmp_list;
5435
5436   if (!gtk_tree_view_column_get_reorderable (column))
5437     return (GtkTreeViewColumn *)0x1;
5438
5439   switch (drop_position)
5440     {
5441       case DROP_HOME:
5442         /* find first column where we can drop */
5443         tmp_list = tree_view->priv->columns;
5444         if (column == GTK_TREE_VIEW_COLUMN (tmp_list->data))
5445           return (GtkTreeViewColumn *)0x1;
5446
5447         while (tmp_list)
5448           {
5449             g_assert (tmp_list);
5450
5451             cur_column = GTK_TREE_VIEW_COLUMN (tmp_list->data);
5452             tmp_list = tmp_list->next;
5453
5454             if (left_column &&
5455                 gtk_tree_view_column_get_visible (left_column) == FALSE)
5456               continue;
5457
5458             if (!tree_view->priv->column_drop_func)
5459               return left_column;
5460
5461             if (!tree_view->priv->column_drop_func (tree_view, column, left_column, cur_column, tree_view->priv->column_drop_func_data))
5462               {
5463                 left_column = cur_column;
5464                 continue;
5465               }
5466
5467             return left_column;
5468           }
5469
5470         if (!tree_view->priv->column_drop_func)
5471           return left_column;
5472
5473         if (tree_view->priv->column_drop_func (tree_view, column, left_column, NULL, tree_view->priv->column_drop_func_data))
5474           return left_column;
5475         else
5476           return (GtkTreeViewColumn *)0x1;
5477         break;
5478
5479       case DROP_RIGHT:
5480         /* find first column after column where we can drop */
5481         tmp_list = tree_view->priv->columns;
5482
5483         for (; tmp_list; tmp_list = tmp_list->next)
5484           if (GTK_TREE_VIEW_COLUMN (tmp_list->data) == column)
5485             break;
5486
5487         if (!tmp_list || !tmp_list->next)
5488           return (GtkTreeViewColumn *)0x1;
5489
5490         tmp_list = tmp_list->next;
5491         left_column = GTK_TREE_VIEW_COLUMN (tmp_list->data);
5492         tmp_list = tmp_list->next;
5493
5494         while (tmp_list)
5495           {
5496             g_assert (tmp_list);
5497
5498             cur_column = GTK_TREE_VIEW_COLUMN (tmp_list->data);
5499             tmp_list = tmp_list->next;
5500
5501             if (left_column &&
5502                 gtk_tree_view_column_get_visible (left_column) == FALSE)
5503               {
5504                 left_column = cur_column;
5505                 if (tmp_list)
5506                   tmp_list = tmp_list->next;
5507                 continue;
5508               }
5509
5510             if (!tree_view->priv->column_drop_func)
5511               return left_column;
5512
5513             if (!tree_view->priv->column_drop_func (tree_view, column, left_column, cur_column, tree_view->priv->column_drop_func_data))
5514               {
5515                 left_column = cur_column;
5516                 continue;
5517               }
5518
5519             return left_column;
5520           }
5521
5522         if (!tree_view->priv->column_drop_func)
5523           return left_column;
5524
5525         if (tree_view->priv->column_drop_func (tree_view, column, left_column, NULL, tree_view->priv->column_drop_func_data))
5526           return left_column;
5527         else
5528           return (GtkTreeViewColumn *)0x1;
5529         break;
5530
5531       case DROP_LEFT:
5532         /* find first column before column where we can drop */
5533         tmp_list = tree_view->priv->columns;
5534
5535         for (; tmp_list; tmp_list = tmp_list->next)
5536           if (GTK_TREE_VIEW_COLUMN (tmp_list->data) == column)
5537             break;
5538
5539         if (!tmp_list || !tmp_list->prev)
5540           return (GtkTreeViewColumn *)0x1;
5541
5542         tmp_list = tmp_list->prev;
5543         cur_column = GTK_TREE_VIEW_COLUMN (tmp_list->data);
5544         tmp_list = tmp_list->prev;
5545
5546         while (tmp_list)
5547           {
5548             g_assert (tmp_list);
5549
5550             left_column = GTK_TREE_VIEW_COLUMN (tmp_list->data);
5551
5552             if (left_column &&
5553                 gtk_tree_view_column_get_visible (left_column) == FALSE)
5554               {
5555                 /*if (!tmp_list->prev)
5556                   return (GtkTreeViewColumn *)0x1;
5557                   */
5558 /*
5559                 cur_column = GTK_TREE_VIEW_COLUMN (tmp_list->prev->data);
5560                 tmp_list = tmp_list->prev->prev;
5561                 continue;*/
5562
5563                 cur_column = left_column;
5564                 if (tmp_list)
5565                   tmp_list = tmp_list->prev;
5566                 continue;
5567               }
5568
5569             if (!tree_view->priv->column_drop_func)
5570               return left_column;
5571
5572             if (tree_view->priv->column_drop_func (tree_view, column, left_column, cur_column, tree_view->priv->column_drop_func_data))
5573               return left_column;
5574
5575             cur_column = left_column;
5576             tmp_list = tmp_list->prev;
5577           }
5578
5579         if (!tree_view->priv->column_drop_func)
5580           return NULL;
5581
5582         if (tree_view->priv->column_drop_func (tree_view, column, NULL, cur_column, tree_view->priv->column_drop_func_data))
5583           return NULL;
5584         else
5585           return (GtkTreeViewColumn *)0x1;
5586         break;
5587
5588       case DROP_END:
5589         /* same as DROP_HOME case, but doing it backwards */
5590         tmp_list = g_list_last (tree_view->priv->columns);
5591         cur_column = NULL;
5592
5593         if (column == GTK_TREE_VIEW_COLUMN (tmp_list->data))
5594           return (GtkTreeViewColumn *)0x1;
5595
5596         while (tmp_list)
5597           {
5598             g_assert (tmp_list);
5599
5600             left_column = GTK_TREE_VIEW_COLUMN (tmp_list->data);
5601
5602             if (left_column &&
5603                 gtk_tree_view_column_get_visible (left_column) == FALSE)
5604               {
5605                 cur_column = left_column;
5606                 tmp_list = tmp_list->prev;
5607               }
5608
5609             if (!tree_view->priv->column_drop_func)
5610               return left_column;
5611
5612             if (tree_view->priv->column_drop_func (tree_view, column, left_column, cur_column, tree_view->priv->column_drop_func_data))
5613               return left_column;
5614
5615             cur_column = left_column;
5616             tmp_list = tmp_list->prev;
5617           }
5618
5619         if (!tree_view->priv->column_drop_func)
5620           return NULL;
5621
5622         if (tree_view->priv->column_drop_func (tree_view, column, NULL, cur_column, tree_view->priv->column_drop_func_data))
5623           return NULL;
5624         else
5625           return (GtkTreeViewColumn *)0x1;
5626         break;
5627     }
5628
5629   return (GtkTreeViewColumn *)0x1;
5630 }
5631
5632 static gboolean
5633 gtk_tree_view_key_press (GtkWidget   *widget,
5634                          GdkEventKey *event)
5635 {
5636   GtkTreeView *tree_view = (GtkTreeView *) widget;
5637   GtkWidget   *button;
5638
5639   if (tree_view->priv->rubber_band_status)
5640     {
5641       if (event->keyval == GDK_KEY_Escape)
5642         gtk_tree_view_stop_rubber_band (tree_view);
5643
5644       return TRUE;
5645     }
5646
5647   if (tree_view->priv->in_column_drag)
5648     {
5649       if (event->keyval == GDK_KEY_Escape)
5650         {
5651           tree_view->priv->cur_reorder = NULL;
5652           gtk_tree_view_button_release_drag_column (widget, NULL);
5653         }
5654       return TRUE;
5655     }
5656
5657   if (tree_view->priv->headers_visible)
5658     {
5659       GList *focus_column;
5660       gboolean rtl;
5661
5662       rtl = (gtk_widget_get_direction (GTK_WIDGET (tree_view)) == GTK_TEXT_DIR_RTL);
5663
5664       for (focus_column = tree_view->priv->columns;
5665            focus_column;
5666            focus_column = focus_column->next)
5667         {
5668           GtkTreeViewColumn *column = GTK_TREE_VIEW_COLUMN (focus_column->data);
5669
5670           button = gtk_tree_view_column_get_button (column);
5671           if (gtk_widget_has_focus (button))
5672             break;
5673         }
5674
5675       if (focus_column &&
5676           (event->state & GDK_SHIFT_MASK) && (event->state & GDK_MOD1_MASK) &&
5677           (event->keyval == GDK_KEY_Left || event->keyval == GDK_KEY_KP_Left
5678            || event->keyval == GDK_KEY_Right || event->keyval == GDK_KEY_KP_Right))
5679         {
5680           GtkTreeViewColumn *column = GTK_TREE_VIEW_COLUMN (focus_column->data);
5681           gint max_width, min_width;
5682
5683           if (!gtk_tree_view_column_get_resizable (column))
5684             {
5685               gtk_widget_error_bell (widget);
5686               return TRUE;
5687             }
5688
5689           if (event->keyval == (rtl ? GDK_KEY_Right : GDK_KEY_Left)
5690               || event->keyval == (rtl ? GDK_KEY_KP_Right : GDK_KEY_KP_Left))
5691             {
5692               GtkRequisition button_req;
5693               gint old_width = _gtk_tree_view_column_get_resized_width (column);
5694               gint new_width;
5695
5696               button = gtk_tree_view_column_get_button (column);
5697
5698               gtk_widget_get_preferred_size (button, &button_req, NULL);
5699
5700               new_width = MAX (old_width, gtk_tree_view_column_get_width (column));
5701               new_width -= 2;
5702               if (new_width < 0)
5703                 new_width = 0;
5704
5705               _gtk_tree_view_column_set_resized_width (column, new_width);
5706
5707               min_width = gtk_tree_view_column_get_min_width (column);
5708               if (min_width == -1)
5709                 new_width = MAX (button_req.width, new_width);
5710               else
5711                 {
5712                   new_width = MAX (min_width, new_width);
5713                 }
5714
5715               max_width = gtk_tree_view_column_get_max_width (column);
5716               if (max_width != -1)
5717                 new_width = MIN (new_width, max_width);
5718
5719               _gtk_tree_view_column_set_use_resized_width (column, TRUE);
5720
5721               if (new_width != old_width)
5722                 {
5723                   _gtk_tree_view_column_set_resized_width (column, new_width);
5724                   gtk_widget_queue_resize (widget);
5725                 }
5726               else
5727                 gtk_widget_error_bell (widget);
5728             }
5729           else if (event->keyval == (rtl ? GDK_KEY_Left : GDK_KEY_Right)
5730                    || event->keyval == (rtl ? GDK_KEY_KP_Left : GDK_KEY_KP_Right))
5731             {
5732               gint old_width = _gtk_tree_view_column_get_resized_width (column);
5733               gint new_width;
5734
5735               new_width = MAX (old_width, gtk_tree_view_column_get_width (column));
5736               new_width += 2;
5737
5738               max_width = gtk_tree_view_column_get_max_width (column);
5739               if (max_width != -1)
5740                 new_width = MIN (new_width, max_width);
5741
5742               _gtk_tree_view_column_set_use_resized_width (column, TRUE);
5743
5744               if (new_width != old_width)
5745                 {
5746                   _gtk_tree_view_column_set_resized_width (column, new_width);
5747                   gtk_widget_queue_resize (widget);
5748                 }
5749               else
5750                 gtk_widget_error_bell (widget);
5751             }
5752
5753           return TRUE;
5754         }
5755
5756       if (focus_column &&
5757           (event->state & GDK_MOD1_MASK) &&
5758           (event->keyval == GDK_KEY_Left || event->keyval == GDK_KEY_KP_Left
5759            || event->keyval == GDK_KEY_Right || event->keyval == GDK_KEY_KP_Right
5760            || event->keyval == GDK_KEY_Home || event->keyval == GDK_KEY_KP_Home
5761            || event->keyval == GDK_KEY_End || event->keyval == GDK_KEY_KP_End))
5762         {
5763           GtkTreeViewColumn *column = GTK_TREE_VIEW_COLUMN (focus_column->data);
5764
5765           if (event->keyval == (rtl ? GDK_KEY_Right : GDK_KEY_Left)
5766               || event->keyval == (rtl ? GDK_KEY_KP_Right : GDK_KEY_KP_Left))
5767             {
5768               GtkTreeViewColumn *col;
5769               col = gtk_tree_view_get_drop_column (tree_view, column, DROP_LEFT);
5770               if (col != (GtkTreeViewColumn *)0x1)
5771                 gtk_tree_view_move_column_after (tree_view, column, col);
5772               else
5773                 gtk_widget_error_bell (widget);
5774             }
5775           else if (event->keyval == (rtl ? GDK_KEY_Left : GDK_KEY_Right)
5776                    || event->keyval == (rtl ? GDK_KEY_KP_Left : GDK_KEY_KP_Right))
5777             {
5778               GtkTreeViewColumn *col;
5779               col = gtk_tree_view_get_drop_column (tree_view, column, DROP_RIGHT);
5780               if (col != (GtkTreeViewColumn *)0x1)
5781                 gtk_tree_view_move_column_after (tree_view, column, col);
5782               else
5783                 gtk_widget_error_bell (widget);
5784             }
5785           else if (event->keyval == GDK_KEY_Home || event->keyval == GDK_KEY_KP_Home)
5786             {
5787               GtkTreeViewColumn *col;
5788               col = gtk_tree_view_get_drop_column (tree_view, column, DROP_HOME);
5789               if (col != (GtkTreeViewColumn *)0x1)
5790                 gtk_tree_view_move_column_after (tree_view, column, col);
5791               else
5792                 gtk_widget_error_bell (widget);
5793             }
5794           else if (event->keyval == GDK_KEY_End || event->keyval == GDK_KEY_KP_End)
5795             {
5796               GtkTreeViewColumn *col;
5797               col = gtk_tree_view_get_drop_column (tree_view, column, DROP_END);
5798               if (col != (GtkTreeViewColumn *)0x1)
5799                 gtk_tree_view_move_column_after (tree_view, column, col);
5800               else
5801                 gtk_widget_error_bell (widget);
5802             }
5803
5804           return TRUE;
5805         }
5806     }
5807
5808   /* Chain up to the parent class.  It handles the keybindings. */
5809   if (GTK_WIDGET_CLASS (gtk_tree_view_parent_class)->key_press_event (widget, event))
5810     return TRUE;
5811
5812   if (tree_view->priv->search_entry_avoid_unhandled_binding)
5813     {
5814       tree_view->priv->search_entry_avoid_unhandled_binding = FALSE;
5815       return FALSE;
5816     }
5817
5818   /* We pass the event to the search_entry.  If its text changes, then we start
5819    * the typeahead find capabilities. */
5820   if (gtk_widget_has_focus (GTK_WIDGET (tree_view))
5821       && tree_view->priv->enable_search
5822       && !tree_view->priv->search_custom_entry_set)
5823     {
5824       GdkEvent *new_event;
5825       char *old_text;
5826       const char *new_text;
5827       gboolean retval;
5828       GdkScreen *screen;
5829       gboolean text_modified;
5830       gulong popup_menu_id;
5831
5832       gtk_tree_view_ensure_interactive_directory (tree_view);
5833
5834       /* Make a copy of the current text */
5835       old_text = g_strdup (gtk_entry_get_text (GTK_ENTRY (tree_view->priv->search_entry)));
5836       new_event = gdk_event_copy ((GdkEvent *) event);
5837       g_object_unref (((GdkEventKey *) new_event)->window);
5838       ((GdkEventKey *) new_event)->window = g_object_ref (gtk_widget_get_window (tree_view->priv->search_window));
5839       gtk_widget_realize (tree_view->priv->search_window);
5840
5841       popup_menu_id = g_signal_connect (tree_view->priv->search_entry,
5842                                         "popup-menu", G_CALLBACK (gtk_true),
5843                                         NULL);
5844
5845       /* Move the entry off screen */
5846       screen = gtk_widget_get_screen (GTK_WIDGET (tree_view));
5847       gtk_window_move (GTK_WINDOW (tree_view->priv->search_window),
5848                        gdk_screen_get_width (screen) + 1,
5849                        gdk_screen_get_height (screen) + 1);
5850       gtk_widget_show (tree_view->priv->search_window);
5851
5852       /* Send the event to the window.  If the preedit_changed signal is emitted
5853        * during this event, we will set priv->imcontext_changed  */
5854       tree_view->priv->imcontext_changed = FALSE;
5855       retval = gtk_widget_event (tree_view->priv->search_window, new_event);
5856       gdk_event_free (new_event);
5857       gtk_widget_hide (tree_view->priv->search_window);
5858
5859       g_signal_handler_disconnect (tree_view->priv->search_entry,
5860                                    popup_menu_id);
5861
5862       /* We check to make sure that the entry tried to handle the text, and that
5863        * the text has changed.
5864        */
5865       new_text = gtk_entry_get_text (GTK_ENTRY (tree_view->priv->search_entry));
5866       text_modified = strcmp (old_text, new_text) != 0;
5867       g_free (old_text);
5868       if (tree_view->priv->imcontext_changed ||    /* we're in a preedit */
5869           (retval && text_modified))               /* ...or the text was modified */
5870         {
5871           if (gtk_tree_view_real_start_interactive_search (tree_view,
5872                                                            gdk_event_get_device ((GdkEvent *) event),
5873                                                            FALSE))
5874             {
5875               gtk_widget_grab_focus (GTK_WIDGET (tree_view));
5876               return TRUE;
5877             }
5878           else
5879             {
5880               gtk_entry_set_text (GTK_ENTRY (tree_view->priv->search_entry), "");
5881               return FALSE;
5882             }
5883         }
5884     }
5885
5886   return FALSE;
5887 }
5888
5889 static gboolean
5890 gtk_tree_view_key_release (GtkWidget   *widget,
5891                            GdkEventKey *event)
5892 {
5893   GtkTreeView *tree_view = GTK_TREE_VIEW (widget);
5894
5895   if (tree_view->priv->rubber_band_status)
5896     return TRUE;
5897
5898   return GTK_WIDGET_CLASS (gtk_tree_view_parent_class)->key_release_event (widget, event);
5899 }
5900
5901 /* FIXME Is this function necessary? Can I get an enter_notify event
5902  * w/o either an expose event or a mouse motion event?
5903  */
5904 static gboolean
5905 gtk_tree_view_enter_notify (GtkWidget        *widget,
5906                             GdkEventCrossing *event)
5907 {
5908   GtkTreeView *tree_view = GTK_TREE_VIEW (widget);
5909   GtkRBTree *tree;
5910   GtkRBNode *node;
5911   gint new_y;
5912
5913   /* Sanity check it */
5914   if (event->window != tree_view->priv->bin_window)
5915     return FALSE;
5916
5917   if (tree_view->priv->tree == NULL)
5918     return FALSE;
5919
5920   if (event->mode == GDK_CROSSING_GRAB ||
5921       event->mode == GDK_CROSSING_GTK_GRAB ||
5922       event->mode == GDK_CROSSING_GTK_UNGRAB ||
5923       event->mode == GDK_CROSSING_STATE_CHANGED)
5924     return TRUE;
5925
5926   /* find the node internally */
5927   new_y = TREE_WINDOW_Y_TO_RBTREE_Y(tree_view, event->y);
5928   if (new_y < 0)
5929     new_y = 0;
5930   _gtk_rbtree_find_offset (tree_view->priv->tree, new_y, &tree, &node);
5931
5932   tree_view->priv->event_last_x = event->x;
5933   tree_view->priv->event_last_y = event->y;
5934
5935   if ((tree_view->priv->button_pressed_node == NULL) ||
5936       (tree_view->priv->button_pressed_node == node))
5937     prelight_or_select (tree_view, tree, node, event->x, event->y);
5938
5939   return TRUE;
5940 }
5941
5942 static gboolean
5943 gtk_tree_view_leave_notify (GtkWidget        *widget,
5944                             GdkEventCrossing *event)
5945 {
5946   GtkTreeView *tree_view;
5947
5948   if (event->mode == GDK_CROSSING_GRAB ||
5949       event->mode == GDK_CROSSING_GTK_GRAB ||
5950       event->mode == GDK_CROSSING_GTK_UNGRAB)
5951     return TRUE;
5952
5953   tree_view = GTK_TREE_VIEW (widget);
5954
5955   if (tree_view->priv->prelight_node)
5956     _gtk_tree_view_queue_draw_node (tree_view,
5957                                    tree_view->priv->prelight_tree,
5958                                    tree_view->priv->prelight_node,
5959                                    NULL);
5960
5961   tree_view->priv->event_last_x = -10000;
5962   tree_view->priv->event_last_y = -10000;
5963
5964   prelight_or_select (tree_view,
5965                       NULL, NULL,
5966                       -1000, -1000); /* coords not possibly over an arrow */
5967
5968   return TRUE;
5969 }
5970
5971
5972 static gint
5973 gtk_tree_view_focus_out (GtkWidget     *widget,
5974                          GdkEventFocus *event)
5975 {
5976   GtkTreeView *tree_view;
5977
5978   tree_view = GTK_TREE_VIEW (widget);
5979
5980   gtk_widget_queue_draw (widget);
5981
5982   /* destroy interactive search dialog */
5983   if (tree_view->priv->search_window)
5984     gtk_tree_view_search_dialog_hide (tree_view->priv->search_window, tree_view,
5985                                       gdk_event_get_device ((GdkEvent *) event));
5986
5987   return FALSE;
5988 }
5989
5990
5991 /* Incremental Reflow
5992  */
5993
5994 static void
5995 gtk_tree_view_node_queue_redraw (GtkTreeView *tree_view,
5996                                  GtkRBTree   *tree,
5997                                  GtkRBNode   *node)
5998 {
5999   GtkAllocation allocation;
6000   gint y;
6001
6002   y = _gtk_rbtree_node_find_offset (tree, node)
6003     - gtk_adjustment_get_value (tree_view->priv->vadjustment)
6004     + gtk_tree_view_get_effective_header_height (tree_view);
6005
6006   gtk_widget_get_allocation (GTK_WIDGET (tree_view), &allocation);
6007   gtk_widget_queue_draw_area (GTK_WIDGET (tree_view),
6008                               0, y,
6009                               allocation.width,
6010                               GTK_RBNODE_GET_HEIGHT (node));
6011 }
6012
6013 static gboolean
6014 node_is_visible (GtkTreeView *tree_view,
6015                  GtkRBTree   *tree,
6016                  GtkRBNode   *node)
6017 {
6018   int y;
6019   int height;
6020
6021   y = _gtk_rbtree_node_find_offset (tree, node);
6022   height = gtk_tree_view_get_row_height (tree_view, node);
6023
6024   if (y >= gtk_adjustment_get_value (tree_view->priv->vadjustment) &&
6025       y + height <= (gtk_adjustment_get_value (tree_view->priv->vadjustment)
6026                      + gtk_adjustment_get_page_size (tree_view->priv->vadjustment)))
6027     return TRUE;
6028
6029   return FALSE;
6030 }
6031
6032 /* Returns TRUE if it updated the size
6033  */
6034 static gboolean
6035 validate_row (GtkTreeView *tree_view,
6036               GtkRBTree   *tree,
6037               GtkRBNode   *node,
6038               GtkTreeIter *iter,
6039               GtkTreePath *path)
6040 {
6041   GtkTreeViewColumn *column;
6042   GList *list, *first_column, *last_column;
6043   gint height = 0;
6044   gint horizontal_separator;
6045   gint vertical_separator;
6046   gint depth = gtk_tree_path_get_depth (path);
6047   gboolean retval = FALSE;
6048   gboolean is_separator = FALSE;
6049   gboolean draw_vgrid_lines, draw_hgrid_lines;
6050   gint focus_pad;
6051   gint grid_line_width;
6052   gboolean wide_separators;
6053   gint separator_height;
6054   gint expander_size;
6055
6056   /* double check the row needs validating */
6057   if (! GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_INVALID) &&
6058       ! GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_COLUMN_INVALID))
6059     return FALSE;
6060
6061   is_separator = row_is_separator (tree_view, iter, NULL);
6062
6063   gtk_widget_style_get (GTK_WIDGET (tree_view),
6064                         "focus-padding", &focus_pad,
6065                         "horizontal-separator", &horizontal_separator,
6066                         "vertical-separator", &vertical_separator,
6067                         "grid-line-width", &grid_line_width,
6068                         "wide-separators",  &wide_separators,
6069                         "separator-height", &separator_height,
6070                         NULL);
6071
6072   draw_vgrid_lines =
6073     tree_view->priv->grid_lines == GTK_TREE_VIEW_GRID_LINES_VERTICAL
6074     || tree_view->priv->grid_lines == GTK_TREE_VIEW_GRID_LINES_BOTH;
6075   draw_hgrid_lines =
6076     tree_view->priv->grid_lines == GTK_TREE_VIEW_GRID_LINES_HORIZONTAL
6077     || tree_view->priv->grid_lines == GTK_TREE_VIEW_GRID_LINES_BOTH;
6078   expander_size = gtk_tree_view_get_expander_size (tree_view);
6079
6080   for (last_column = g_list_last (tree_view->priv->columns);
6081        last_column &&
6082        !(gtk_tree_view_column_get_visible (GTK_TREE_VIEW_COLUMN (last_column->data)));
6083        last_column = last_column->prev)
6084     ;
6085
6086   for (first_column = g_list_first (tree_view->priv->columns);
6087        first_column &&
6088        !(gtk_tree_view_column_get_visible (GTK_TREE_VIEW_COLUMN (first_column->data)));
6089        first_column = first_column->next)
6090     ;
6091
6092   for (list = tree_view->priv->columns; list; list = list->next)
6093     {
6094       gint padding = 0;
6095       gint original_width;
6096       gint new_width;
6097       gint row_height;
6098
6099       column = list->data;
6100
6101       if (!gtk_tree_view_column_get_visible (column))
6102         continue;
6103
6104       if (GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_COLUMN_INVALID) &&
6105           !_gtk_tree_view_column_cell_get_dirty (column))
6106         continue;
6107
6108       original_width = _gtk_tree_view_column_get_requested_width (column);
6109
6110       gtk_tree_view_column_cell_set_cell_data (column, tree_view->priv->model, iter,
6111                                                GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_PARENT),
6112                                                node->children?TRUE:FALSE);
6113       gtk_tree_view_column_cell_get_size (column,
6114                                           NULL, NULL, NULL,
6115                                           NULL, &row_height);
6116
6117       if (!is_separator)
6118         {
6119           row_height += vertical_separator;
6120           height = MAX (height, row_height);
6121           height = MAX (height, expander_size);
6122         }
6123       else
6124         {
6125           if (wide_separators)
6126             height = separator_height + 2 * focus_pad;
6127           else
6128             height = 2 + 2 * focus_pad;
6129         }
6130
6131       if (gtk_tree_view_is_expander_column (tree_view, column))
6132         {
6133           padding += horizontal_separator + (depth - 1) * tree_view->priv->level_indentation;
6134
6135           if (gtk_tree_view_draw_expanders (tree_view))
6136             padding += depth * expander_size;
6137         }
6138       else
6139         padding += horizontal_separator;
6140
6141       if (draw_vgrid_lines)
6142         {
6143           if (list->data == first_column || list->data == last_column)
6144             padding += grid_line_width / 2.0;
6145           else
6146             padding += grid_line_width;
6147         }
6148
6149       /* Update the padding for the column */
6150       _gtk_tree_view_column_push_padding (column, padding);
6151       new_width = _gtk_tree_view_column_get_requested_width (column);
6152
6153       if (new_width > original_width)
6154         retval = TRUE;
6155     }
6156
6157   if (draw_hgrid_lines)
6158     height += grid_line_width;
6159
6160   if (height != GTK_RBNODE_GET_HEIGHT (node))
6161     {
6162       retval = TRUE;
6163       _gtk_rbtree_node_set_height (tree, node, height);
6164     }
6165   _gtk_rbtree_node_mark_valid (tree, node);
6166   tree_view->priv->post_validation_flag = TRUE;
6167
6168   return retval;
6169 }
6170
6171
6172 static void
6173 validate_visible_area (GtkTreeView *tree_view)
6174 {
6175   GtkAllocation allocation;
6176   GtkTreePath *path = NULL;
6177   GtkTreePath *above_path = NULL;
6178   GtkTreeIter iter;
6179   GtkRBTree *tree = NULL;
6180   GtkRBNode *node = NULL;
6181   gboolean need_redraw = FALSE;
6182   gboolean size_changed = FALSE;
6183   gint total_height;
6184   gint area_above = 0;
6185   gint area_below = 0;
6186
6187   if (tree_view->priv->tree == NULL)
6188     return;
6189
6190   if (! GTK_RBNODE_FLAG_SET (tree_view->priv->tree->root, GTK_RBNODE_DESCENDANTS_INVALID) &&
6191       tree_view->priv->scroll_to_path == NULL)
6192     return;
6193
6194   gtk_widget_get_allocation (GTK_WIDGET (tree_view), &allocation);
6195   total_height = allocation.height - gtk_tree_view_get_effective_header_height (tree_view);
6196
6197   if (total_height == 0)
6198     return;
6199
6200   /* First, we check to see if we need to scroll anywhere
6201    */
6202   if (tree_view->priv->scroll_to_path)
6203     {
6204       path = gtk_tree_row_reference_get_path (tree_view->priv->scroll_to_path);
6205       if (path && !_gtk_tree_view_find_node (tree_view, path, &tree, &node))
6206         {
6207           /* we are going to scroll, and will update dy */
6208           gtk_tree_model_get_iter (tree_view->priv->model, &iter, path);
6209           if (GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_INVALID) ||
6210               GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_COLUMN_INVALID))
6211             {
6212               _gtk_tree_view_queue_draw_node (tree_view, tree, node, NULL);
6213               if (validate_row (tree_view, tree, node, &iter, path))
6214                 size_changed = TRUE;
6215             }
6216
6217           if (tree_view->priv->scroll_to_use_align)
6218             {
6219               gint height = gtk_tree_view_get_row_height (tree_view, node);
6220               area_above = (total_height - height) *
6221                 tree_view->priv->scroll_to_row_align;
6222               area_below = total_height - area_above - height;
6223               area_above = MAX (area_above, 0);
6224               area_below = MAX (area_below, 0);
6225             }
6226           else
6227             {
6228               /* two cases:
6229                * 1) row not visible
6230                * 2) row visible
6231                */
6232               gint dy;
6233               gint height = gtk_tree_view_get_row_height (tree_view, node);
6234
6235               dy = _gtk_rbtree_node_find_offset (tree, node);
6236
6237               if (dy >= gtk_adjustment_get_value (tree_view->priv->vadjustment) &&
6238                   dy + height <= (gtk_adjustment_get_value (tree_view->priv->vadjustment)
6239                                   + gtk_adjustment_get_page_size (tree_view->priv->vadjustment)))
6240                 {
6241                   /* row visible: keep the row at the same position */
6242                   area_above = dy - gtk_adjustment_get_value (tree_view->priv->vadjustment);
6243                   area_below = (gtk_adjustment_get_value (tree_view->priv->vadjustment) +
6244                                 gtk_adjustment_get_page_size (tree_view->priv->vadjustment))
6245                                - dy - height;
6246                 }
6247               else
6248                 {
6249                   /* row not visible */
6250                   if (dy >= 0
6251                       && dy + height <= gtk_adjustment_get_page_size (tree_view->priv->vadjustment))
6252                     {
6253                       /* row at the beginning -- fixed */
6254                       area_above = dy;
6255                       area_below = gtk_adjustment_get_page_size (tree_view->priv->vadjustment)
6256                                    - area_above - height;
6257                     }
6258                   else if (dy >= (gtk_adjustment_get_upper (tree_view->priv->vadjustment) -
6259                                   gtk_adjustment_get_page_size (tree_view->priv->vadjustment)))
6260                     {
6261                       /* row at the end -- fixed */
6262                       area_above = dy - (gtk_adjustment_get_upper (tree_view->priv->vadjustment) -
6263                                    gtk_adjustment_get_page_size (tree_view->priv->vadjustment));
6264                       area_below = gtk_adjustment_get_page_size (tree_view->priv->vadjustment) -
6265                                    area_above - height;
6266
6267                       if (area_below < 0)
6268                         {
6269                           area_above = gtk_adjustment_get_page_size (tree_view->priv->vadjustment) - height;
6270                           area_below = 0;
6271                         }
6272                     }
6273                   else
6274                     {
6275                       /* row somewhere in the middle, bring it to the top
6276                        * of the view
6277                        */
6278                       area_above = 0;
6279                       area_below = total_height - height;
6280                     }
6281                 }
6282             }
6283         }
6284       else
6285         /* the scroll to isn't valid; ignore it.
6286          */
6287         {
6288           if (tree_view->priv->scroll_to_path && !path)
6289             {
6290               gtk_tree_row_reference_free (tree_view->priv->scroll_to_path);
6291               tree_view->priv->scroll_to_path = NULL;
6292             }
6293           if (path)
6294             gtk_tree_path_free (path);
6295           path = NULL;
6296         }
6297     }
6298
6299   /* We didn't have a scroll_to set, so we just handle things normally
6300    */
6301   if (path == NULL)
6302     {
6303       gint offset;
6304
6305       offset = _gtk_rbtree_find_offset (tree_view->priv->tree,
6306                                         TREE_WINDOW_Y_TO_RBTREE_Y (tree_view, 0),
6307                                         &tree, &node);
6308       if (node == NULL)
6309         {
6310           /* In this case, nothing has been validated */
6311           path = gtk_tree_path_new_first ();
6312           _gtk_tree_view_find_node (tree_view, path, &tree, &node);
6313         }
6314       else
6315         {
6316           path = _gtk_tree_path_new_from_rbtree (tree, node);
6317           total_height += offset;
6318         }
6319
6320       gtk_tree_model_get_iter (tree_view->priv->model, &iter, path);
6321
6322       if (GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_INVALID) ||
6323           GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_COLUMN_INVALID))
6324         {
6325           _gtk_tree_view_queue_draw_node (tree_view, tree, node, NULL);
6326           if (validate_row (tree_view, tree, node, &iter, path))
6327             size_changed = TRUE;
6328         }
6329       area_above = 0;
6330       area_below = total_height - gtk_tree_view_get_row_height (tree_view, node);
6331     }
6332
6333   above_path = gtk_tree_path_copy (path);
6334
6335   /* if we do not validate any row above the new top_row, we will make sure
6336    * that the row immediately above top_row has been validated. (if we do not
6337    * do this, _gtk_rbtree_find_offset will find the row above top_row, because
6338    * when invalidated that row's height will be zero. and this will mess up
6339    * scrolling).
6340    */
6341   if (area_above == 0)
6342     {
6343       GtkRBTree *tmptree;
6344       GtkRBNode *tmpnode;
6345
6346       _gtk_tree_view_find_node (tree_view, above_path, &tmptree, &tmpnode);
6347       _gtk_rbtree_prev_full (tmptree, tmpnode, &tmptree, &tmpnode);
6348
6349       if (tmpnode)
6350         {
6351           GtkTreePath *tmppath;
6352           GtkTreeIter tmpiter;
6353
6354           tmppath = _gtk_tree_path_new_from_rbtree (tmptree, tmpnode);
6355           gtk_tree_model_get_iter (tree_view->priv->model, &tmpiter, tmppath);
6356
6357           if (GTK_RBNODE_FLAG_SET (tmpnode, GTK_RBNODE_INVALID) ||
6358               GTK_RBNODE_FLAG_SET (tmpnode, GTK_RBNODE_COLUMN_INVALID))
6359             {
6360               _gtk_tree_view_queue_draw_node (tree_view, tmptree, tmpnode, NULL);
6361               if (validate_row (tree_view, tmptree, tmpnode, &tmpiter, tmppath))
6362                 size_changed = TRUE;
6363             }
6364
6365           gtk_tree_path_free (tmppath);
6366         }
6367     }
6368
6369   /* Now, we walk forwards and backwards, measuring rows. Unfortunately,
6370    * backwards is much slower then forward, as there is no iter_prev function.
6371    * We go forwards first in case we run out of tree.  Then we go backwards to
6372    * fill out the top.
6373    */
6374   while (node && area_below > 0)
6375     {
6376       if (node->children)
6377         {
6378           GtkTreeIter parent = iter;
6379           gboolean has_child;
6380
6381           tree = node->children;
6382           node = _gtk_rbtree_first (tree);
6383
6384           has_child = gtk_tree_model_iter_children (tree_view->priv->model,
6385                                                     &iter,
6386                                                     &parent);
6387           TREE_VIEW_INTERNAL_ASSERT_VOID (has_child);
6388           gtk_tree_path_down (path);
6389         }
6390       else
6391         {
6392           gboolean done = FALSE;
6393           do
6394             {
6395               node = _gtk_rbtree_next (tree, node);
6396               if (node != NULL)
6397                 {
6398                   gboolean has_next = gtk_tree_model_iter_next (tree_view->priv->model, &iter);
6399                   done = TRUE;
6400                   gtk_tree_path_next (path);
6401
6402                   /* Sanity Check! */
6403                   TREE_VIEW_INTERNAL_ASSERT_VOID (has_next);
6404                 }
6405               else
6406                 {
6407                   GtkTreeIter parent_iter = iter;
6408                   gboolean has_parent;
6409
6410                   node = tree->parent_node;
6411                   tree = tree->parent_tree;
6412                   if (tree == NULL)
6413                     break;
6414                   has_parent = gtk_tree_model_iter_parent (tree_view->priv->model,
6415                                                            &iter,
6416                                                            &parent_iter);
6417                   gtk_tree_path_up (path);
6418
6419                   /* Sanity check */
6420                   TREE_VIEW_INTERNAL_ASSERT_VOID (has_parent);
6421                 }
6422             }
6423           while (!done);
6424         }
6425
6426       if (!node)
6427         break;
6428
6429       if (GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_INVALID) ||
6430           GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_COLUMN_INVALID))
6431         {
6432           _gtk_tree_view_queue_draw_node (tree_view, tree, node, NULL);
6433           if (validate_row (tree_view, tree, node, &iter, path))
6434               size_changed = TRUE;
6435         }
6436
6437       area_below -= gtk_tree_view_get_row_height (tree_view, node);
6438     }
6439   gtk_tree_path_free (path);
6440
6441   /* If we ran out of tree, and have extra area_below left, we need to add it
6442    * to area_above */
6443   if (area_below > 0)
6444     area_above += area_below;
6445
6446   _gtk_tree_view_find_node (tree_view, above_path, &tree, &node);
6447
6448   /* We walk backwards */
6449   while (area_above > 0)
6450     {
6451       _gtk_rbtree_prev_full (tree, node, &tree, &node);
6452
6453       /* Always find the new path in the tree.  We cannot just assume
6454        * a gtk_tree_path_prev() is enough here, as there might be children
6455        * in between this node and the previous sibling node.  If this
6456        * appears to be a performance hotspot in profiles, we can look into
6457        * intrigate logic for keeping path, node and iter in sync like
6458        * we do for forward walks.  (Which will be hard because of the lacking
6459        * iter_prev).
6460        */
6461
6462       if (node == NULL)
6463         break;
6464
6465       gtk_tree_path_free (above_path);
6466       above_path = _gtk_tree_path_new_from_rbtree (tree, node);
6467
6468       gtk_tree_model_get_iter (tree_view->priv->model, &iter, above_path);
6469
6470       if (GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_INVALID) ||
6471           GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_COLUMN_INVALID))
6472         {
6473           _gtk_tree_view_queue_draw_node (tree_view, tree, node, NULL);
6474           if (validate_row (tree_view, tree, node, &iter, above_path))
6475             size_changed = TRUE;
6476         }
6477       area_above -= gtk_tree_view_get_row_height (tree_view, node);
6478     }
6479
6480   /* if we scrolled to a path, we need to set the dy here,
6481    * and sync the top row accordingly
6482    */
6483   if (tree_view->priv->scroll_to_path)
6484     {
6485       gtk_tree_view_set_top_row (tree_view, above_path, -area_above);
6486       gtk_tree_view_top_row_to_dy (tree_view);
6487
6488       need_redraw = TRUE;
6489     }
6490   else if (tree_view->priv->height <= gtk_adjustment_get_page_size (tree_view->priv->vadjustment))
6491     {
6492       /* when we are not scrolling, we should never set dy to something
6493        * else than zero. we update top_row to be in sync with dy = 0.
6494        */
6495       gtk_adjustment_set_value (GTK_ADJUSTMENT (tree_view->priv->vadjustment), 0);
6496       gtk_tree_view_dy_to_top_row (tree_view);
6497     }
6498   else if (gtk_adjustment_get_value (tree_view->priv->vadjustment) + gtk_adjustment_get_page_size (tree_view->priv->vadjustment) > tree_view->priv->height)
6499     {
6500       gtk_adjustment_set_value (GTK_ADJUSTMENT (tree_view->priv->vadjustment), tree_view->priv->height - gtk_adjustment_get_page_size (tree_view->priv->vadjustment));
6501       gtk_tree_view_dy_to_top_row (tree_view);
6502     }
6503   else
6504     gtk_tree_view_top_row_to_dy (tree_view);
6505
6506   /* update width/height and queue a resize */
6507   if (size_changed)
6508     {
6509       GtkRequisition requisition;
6510
6511       /* We temporarily guess a size, under the assumption that it will be the
6512        * same when we get our next size_allocate.  If we don't do this, we'll be
6513        * in an inconsistent state if we call top_row_to_dy. */
6514
6515       gtk_widget_get_preferred_size (GTK_WIDGET (tree_view),
6516                                      &requisition, NULL);
6517       gtk_adjustment_set_upper (tree_view->priv->hadjustment,
6518                                 MAX (gtk_adjustment_get_upper (tree_view->priv->hadjustment), requisition.width));
6519       gtk_adjustment_set_upper (tree_view->priv->vadjustment,
6520                                 MAX (gtk_adjustment_get_upper (tree_view->priv->vadjustment), requisition.height));
6521       gtk_widget_queue_resize (GTK_WIDGET (tree_view));
6522     }
6523
6524   if (tree_view->priv->scroll_to_path)
6525     {
6526       gtk_tree_row_reference_free (tree_view->priv->scroll_to_path);
6527       tree_view->priv->scroll_to_path = NULL;
6528     }
6529
6530   if (above_path)
6531     gtk_tree_path_free (above_path);
6532
6533   if (tree_view->priv->scroll_to_column)
6534     {
6535       tree_view->priv->scroll_to_column = NULL;
6536     }
6537   if (need_redraw)
6538     gtk_widget_queue_draw (GTK_WIDGET (tree_view));
6539 }
6540
6541 static void
6542 initialize_fixed_height_mode (GtkTreeView *tree_view)
6543 {
6544   if (!tree_view->priv->tree)
6545     return;
6546
6547   if (tree_view->priv->fixed_height < 0)
6548     {
6549       GtkTreeIter iter;
6550       GtkTreePath *path;
6551
6552       GtkRBTree *tree = NULL;
6553       GtkRBNode *node = NULL;
6554
6555       tree = tree_view->priv->tree;
6556       node = tree->root;
6557
6558       path = _gtk_tree_path_new_from_rbtree (tree, node);
6559       gtk_tree_model_get_iter (tree_view->priv->model, &iter, path);
6560
6561       validate_row (tree_view, tree, node, &iter, path);
6562
6563       gtk_tree_path_free (path);
6564
6565       tree_view->priv->fixed_height = gtk_tree_view_get_row_height (tree_view, node);
6566     }
6567
6568    _gtk_rbtree_set_fixed_height (tree_view->priv->tree,
6569                                  tree_view->priv->fixed_height, TRUE);
6570 }
6571
6572 /* Our strategy for finding nodes to validate is a little convoluted.  We find
6573  * the left-most uninvalidated node.  We then try walking right, validating
6574  * nodes.  Once we find a valid node, we repeat the previous process of finding
6575  * the first invalid node.
6576  */
6577
6578 static gboolean
6579 do_validate_rows (GtkTreeView *tree_view, gboolean queue_resize)
6580 {
6581   GtkRBTree *tree = NULL;
6582   GtkRBNode *node = NULL;
6583   gboolean validated_area = FALSE;
6584   gint retval = TRUE;
6585   GtkTreePath *path = NULL;
6586   GtkTreeIter iter;
6587   GTimer *timer;
6588   gint i = 0;
6589
6590   gint y = -1;
6591   gint prev_height = -1;
6592   gboolean fixed_height = TRUE;
6593
6594   g_assert (tree_view);
6595
6596   if (tree_view->priv->tree == NULL)
6597       return FALSE;
6598
6599   if (tree_view->priv->fixed_height_mode)
6600     {
6601       if (tree_view->priv->fixed_height < 0)
6602         initialize_fixed_height_mode (tree_view);
6603
6604       return FALSE;
6605     }
6606
6607   timer = g_timer_new ();
6608   g_timer_start (timer);
6609
6610   do
6611     {
6612       gboolean changed = FALSE;
6613
6614       if (! GTK_RBNODE_FLAG_SET (tree_view->priv->tree->root, GTK_RBNODE_DESCENDANTS_INVALID))
6615         {
6616           retval = FALSE;
6617           goto done;
6618         }
6619
6620       if (path != NULL)
6621         {
6622           node = _gtk_rbtree_next (tree, node);
6623           if (node != NULL)
6624             {
6625               TREE_VIEW_INTERNAL_ASSERT (gtk_tree_model_iter_next (tree_view->priv->model, &iter), FALSE);
6626               gtk_tree_path_next (path);
6627             }
6628           else
6629             {
6630               gtk_tree_path_free (path);
6631               path = NULL;
6632             }
6633         }
6634
6635       if (path == NULL)
6636         {
6637           tree = tree_view->priv->tree;
6638           node = tree_view->priv->tree->root;
6639
6640           g_assert (GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_DESCENDANTS_INVALID));
6641
6642           do
6643             {
6644               if (!_gtk_rbtree_is_nil (node->left) &&
6645                   GTK_RBNODE_FLAG_SET (node->left, GTK_RBNODE_DESCENDANTS_INVALID))
6646                 {
6647                   node = node->left;
6648                 }
6649               else if (!_gtk_rbtree_is_nil (node->right) &&
6650                        GTK_RBNODE_FLAG_SET (node->right, GTK_RBNODE_DESCENDANTS_INVALID))
6651                 {
6652                   node = node->right;
6653                 }
6654               else if (GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_INVALID) ||
6655                        GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_COLUMN_INVALID))
6656                 {
6657                   break;
6658                 }
6659               else if (node->children != NULL)
6660                 {
6661                   tree = node->children;
6662                   node = tree->root;
6663                 }
6664               else
6665                 /* RBTree corruption!  All bad */
6666                 g_assert_not_reached ();
6667             }
6668           while (TRUE);
6669           path = _gtk_tree_path_new_from_rbtree (tree, node);
6670           gtk_tree_model_get_iter (tree_view->priv->model, &iter, path);
6671         }
6672
6673       changed = validate_row (tree_view, tree, node, &iter, path);
6674       validated_area = changed || validated_area;
6675
6676       if (changed)
6677         {
6678           gint offset = gtk_tree_view_get_row_y_offset (tree_view, tree, node);
6679
6680           if (y == -1 || y > offset)
6681             y = offset;
6682         }
6683
6684       if (!tree_view->priv->fixed_height_check)
6685         {
6686           gint height;
6687
6688           height = gtk_tree_view_get_row_height (tree_view, node);
6689           if (prev_height < 0)
6690             prev_height = height;
6691           else if (prev_height != height)
6692             fixed_height = FALSE;
6693         }
6694
6695       i++;
6696     }
6697   while (g_timer_elapsed (timer, NULL) < GTK_TREE_VIEW_TIME_MS_PER_IDLE / 1000.);
6698
6699   if (!tree_view->priv->fixed_height_check)
6700    {
6701      if (fixed_height)
6702        _gtk_rbtree_set_fixed_height (tree_view->priv->tree, prev_height, FALSE);
6703
6704      tree_view->priv->fixed_height_check = 1;
6705    }
6706
6707  done:
6708   if (validated_area)
6709     {
6710       GtkRequisition requisition;
6711
6712       /* We temporarily guess a size, under the assumption that it will be the
6713        * same when we get our next size_allocate.  If we don't do this, we'll be
6714        * in an inconsistent state when we call top_row_to_dy. */
6715
6716       /* FIXME: This is called from size_request, for some reason it is not infinitely
6717        * recursing, we cannot call gtk_widget_get_preferred_size() here because that's
6718        * not allowed (from inside ->get_preferred_width/height() implementations, one
6719        * should call the vfuncs directly). However what is desired here is the full
6720        * size including any margins and limited by any alignment (i.e. after
6721        * GtkWidget:adjust_size_request() is called).
6722        *
6723        * Currently bypassing this but the real solution is to not update the scroll adjustments
6724        * untill we've recieved an allocation (never update scroll adjustments from size-requests).
6725        */
6726       gtk_tree_view_size_request (GTK_WIDGET (tree_view), &requisition, FALSE);
6727
6728       /* If rows above the current position have changed height, this has
6729        * affected the current view and thus needs a redraw.
6730        */
6731       if (y != -1 && y < gtk_adjustment_get_value (tree_view->priv->vadjustment))
6732         gtk_widget_queue_draw (GTK_WIDGET (tree_view));
6733
6734       gtk_adjustment_set_upper (tree_view->priv->hadjustment,
6735                                 MAX (gtk_adjustment_get_upper (tree_view->priv->hadjustment), requisition.width));
6736       gtk_adjustment_set_upper (tree_view->priv->vadjustment,
6737                                 MAX (gtk_adjustment_get_upper (tree_view->priv->vadjustment), requisition.height));
6738
6739       if (queue_resize)
6740         gtk_widget_queue_resize_no_redraw (GTK_WIDGET (tree_view));
6741     }
6742
6743   if (path) gtk_tree_path_free (path);
6744   g_timer_destroy (timer);
6745
6746   return retval;
6747 }
6748
6749 static gboolean
6750 validate_rows (GtkTreeView *tree_view)
6751 {
6752   gboolean retval;
6753
6754   retval = do_validate_rows (tree_view, TRUE);
6755
6756   if (! retval && tree_view->priv->validate_rows_timer)
6757     {
6758       g_source_remove (tree_view->priv->validate_rows_timer);
6759       tree_view->priv->validate_rows_timer = 0;
6760     }
6761
6762   return retval;
6763 }
6764
6765 static gboolean
6766 validate_rows_handler (GtkTreeView *tree_view)
6767 {
6768   gboolean retval;
6769
6770   retval = do_validate_rows (tree_view, TRUE);
6771   if (! retval && tree_view->priv->validate_rows_timer)
6772     {
6773       g_source_remove (tree_view->priv->validate_rows_timer);
6774       tree_view->priv->validate_rows_timer = 0;
6775     }
6776
6777   return retval;
6778 }
6779
6780 static gboolean
6781 do_presize_handler (GtkTreeView *tree_view)
6782 {
6783   if (tree_view->priv->mark_rows_col_dirty)
6784     {
6785       if (tree_view->priv->tree)
6786         _gtk_rbtree_column_invalid (tree_view->priv->tree);
6787       tree_view->priv->mark_rows_col_dirty = FALSE;
6788     }
6789   validate_visible_area (tree_view);
6790   tree_view->priv->presize_handler_timer = 0;
6791
6792   if (tree_view->priv->fixed_height_mode)
6793     {
6794       GtkRequisition requisition;
6795
6796       gtk_widget_get_preferred_size (GTK_WIDGET (tree_view),
6797                                      &requisition, NULL);
6798
6799       gtk_adjustment_set_upper (tree_view->priv->hadjustment,
6800                                 MAX (gtk_adjustment_get_upper (tree_view->priv->hadjustment), requisition.width));
6801       gtk_adjustment_set_upper (tree_view->priv->vadjustment,
6802                                 MAX (gtk_adjustment_get_upper (tree_view->priv->vadjustment), requisition.height));
6803       gtk_widget_queue_resize (GTK_WIDGET (tree_view));
6804     }
6805
6806   return FALSE;
6807 }
6808
6809 static gboolean
6810 presize_handler_callback (gpointer data)
6811 {
6812   do_presize_handler (GTK_TREE_VIEW (data));
6813
6814   return FALSE;
6815 }
6816
6817 static void
6818 install_presize_handler (GtkTreeView *tree_view)
6819 {
6820   if (! gtk_widget_get_realized (GTK_WIDGET (tree_view)))
6821     return;
6822
6823   if (! tree_view->priv->presize_handler_timer)
6824     {
6825       tree_view->priv->presize_handler_timer =
6826         gdk_threads_add_idle_full (GTK_PRIORITY_RESIZE - 2, presize_handler_callback, tree_view, NULL);
6827     }
6828   if (! tree_view->priv->validate_rows_timer)
6829     {
6830       tree_view->priv->validate_rows_timer =
6831         gdk_threads_add_idle_full (GTK_TREE_VIEW_PRIORITY_VALIDATE, (GSourceFunc) validate_rows_handler, tree_view, NULL);
6832     }
6833 }
6834
6835 static gboolean
6836 scroll_sync_handler (GtkTreeView *tree_view)
6837 {
6838   if (tree_view->priv->height <= gtk_adjustment_get_page_size (tree_view->priv->vadjustment))
6839     gtk_adjustment_set_value (GTK_ADJUSTMENT (tree_view->priv->vadjustment), 0);
6840   else if (gtk_tree_row_reference_valid (tree_view->priv->top_row))
6841     gtk_tree_view_top_row_to_dy (tree_view);
6842   else
6843     gtk_tree_view_dy_to_top_row (tree_view);
6844
6845   tree_view->priv->scroll_sync_timer = 0;
6846
6847   return FALSE;
6848 }
6849
6850 static void
6851 install_scroll_sync_handler (GtkTreeView *tree_view)
6852 {
6853   if (!gtk_widget_get_realized (GTK_WIDGET (tree_view)))
6854     return;
6855
6856   if (!tree_view->priv->scroll_sync_timer)
6857     {
6858       tree_view->priv->scroll_sync_timer =
6859         gdk_threads_add_idle_full (GTK_TREE_VIEW_PRIORITY_SCROLL_SYNC, (GSourceFunc) scroll_sync_handler, tree_view, NULL);
6860     }
6861 }
6862
6863 static void
6864 gtk_tree_view_set_top_row (GtkTreeView *tree_view,
6865                            GtkTreePath *path,
6866                            gint         offset)
6867 {
6868   gtk_tree_row_reference_free (tree_view->priv->top_row);
6869
6870   if (!path)
6871     {
6872       tree_view->priv->top_row = NULL;
6873       tree_view->priv->top_row_dy = 0;
6874     }
6875   else
6876     {
6877       tree_view->priv->top_row = gtk_tree_row_reference_new_proxy (G_OBJECT (tree_view), tree_view->priv->model, path);
6878       tree_view->priv->top_row_dy = offset;
6879     }
6880 }
6881
6882 /* Always call this iff dy is in the visible range.  If the tree is empty, then
6883  * it's set to be NULL, and top_row_dy is 0;
6884  */
6885 static void
6886 gtk_tree_view_dy_to_top_row (GtkTreeView *tree_view)
6887 {
6888   gint offset;
6889   GtkTreePath *path;
6890   GtkRBTree *tree;
6891   GtkRBNode *node;
6892
6893   if (tree_view->priv->tree == NULL)
6894     {
6895       gtk_tree_view_set_top_row (tree_view, NULL, 0);
6896     }
6897   else
6898     {
6899       offset = _gtk_rbtree_find_offset (tree_view->priv->tree,
6900                                         tree_view->priv->dy,
6901                                         &tree, &node);
6902
6903       if (tree == NULL)
6904         {
6905           gtk_tree_view_set_top_row (tree_view, NULL, 0);
6906         }
6907       else
6908         {
6909           path = _gtk_tree_path_new_from_rbtree (tree, node);
6910           gtk_tree_view_set_top_row (tree_view, path, offset);
6911           gtk_tree_path_free (path);
6912         }
6913     }
6914 }
6915
6916 static void
6917 gtk_tree_view_top_row_to_dy (GtkTreeView *tree_view)
6918 {
6919   GtkTreePath *path;
6920   GtkRBTree *tree;
6921   GtkRBNode *node;
6922   int new_dy;
6923
6924   /* Avoid recursive calls */
6925   if (tree_view->priv->in_top_row_to_dy)
6926     return;
6927
6928   if (tree_view->priv->top_row)
6929     path = gtk_tree_row_reference_get_path (tree_view->priv->top_row);
6930   else
6931     path = NULL;
6932
6933   if (!path)
6934     tree = NULL;
6935   else
6936     _gtk_tree_view_find_node (tree_view, path, &tree, &node);
6937
6938   if (path)
6939     gtk_tree_path_free (path);
6940
6941   if (tree == NULL)
6942     {
6943       /* keep dy and set new toprow */
6944       gtk_tree_row_reference_free (tree_view->priv->top_row);
6945       tree_view->priv->top_row = NULL;
6946       tree_view->priv->top_row_dy = 0;
6947       /* DO NOT install the idle handler */
6948       gtk_tree_view_dy_to_top_row (tree_view);
6949       return;
6950     }
6951
6952   if (gtk_tree_view_get_row_height (tree_view, node)
6953       < tree_view->priv->top_row_dy)
6954     {
6955       /* new top row -- do NOT install the idle handler */
6956       gtk_tree_view_dy_to_top_row (tree_view);
6957       return;
6958     }
6959
6960   new_dy = _gtk_rbtree_node_find_offset (tree, node);
6961   new_dy += tree_view->priv->top_row_dy;
6962
6963   if (new_dy + gtk_adjustment_get_page_size (tree_view->priv->vadjustment) > tree_view->priv->height)
6964     new_dy = tree_view->priv->height - gtk_adjustment_get_page_size (tree_view->priv->vadjustment);
6965
6966   new_dy = MAX (0, new_dy);
6967
6968   tree_view->priv->in_top_row_to_dy = TRUE;
6969   gtk_adjustment_set_value (tree_view->priv->vadjustment, (gdouble)new_dy);
6970   tree_view->priv->in_top_row_to_dy = FALSE;
6971 }
6972
6973
6974 void
6975 _gtk_tree_view_install_mark_rows_col_dirty (GtkTreeView *tree_view,
6976                                             gboolean     install_handler)
6977 {
6978   tree_view->priv->mark_rows_col_dirty = TRUE;
6979
6980   if (install_handler)
6981     install_presize_handler (tree_view);
6982 }
6983
6984 /*
6985  * This function works synchronously (due to the while (validate_rows...)
6986  * loop).
6987  *
6988  * There was a check for column_type != GTK_TREE_VIEW_COLUMN_AUTOSIZE
6989  * here. You now need to check that yourself.
6990  */
6991 void
6992 _gtk_tree_view_column_autosize (GtkTreeView *tree_view,
6993                                 GtkTreeViewColumn *column)
6994 {
6995   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
6996   g_return_if_fail (GTK_IS_TREE_VIEW_COLUMN (column));
6997
6998   _gtk_tree_view_column_cell_set_dirty (column, FALSE);
6999
7000   do_presize_handler (tree_view);
7001   while (validate_rows (tree_view));
7002
7003   gtk_widget_queue_resize (GTK_WIDGET (tree_view));
7004 }
7005
7006 /* Drag-and-drop */
7007
7008 static void
7009 set_source_row (GdkDragContext *context,
7010                 GtkTreeModel   *model,
7011                 GtkTreePath    *source_row)
7012 {
7013   g_object_set_data_full (G_OBJECT (context),
7014                           I_("gtk-tree-view-source-row"),
7015                           source_row ? gtk_tree_row_reference_new (model, source_row) : NULL,
7016                           (GDestroyNotify) (source_row ? gtk_tree_row_reference_free : NULL));
7017 }
7018
7019 static GtkTreePath*
7020 get_source_row (GdkDragContext *context)
7021 {
7022   GtkTreeRowReference *ref =
7023     g_object_get_data (G_OBJECT (context), "gtk-tree-view-source-row");
7024
7025   if (ref)
7026     return gtk_tree_row_reference_get_path (ref);
7027   else
7028     return NULL;
7029 }
7030
7031 typedef struct
7032 {
7033   GtkTreeRowReference *dest_row;
7034   guint                path_down_mode   : 1;
7035   guint                empty_view_drop  : 1;
7036   guint                drop_append_mode : 1;
7037 }
7038 DestRow;
7039
7040 static void
7041 dest_row_free (gpointer data)
7042 {
7043   DestRow *dr = (DestRow *)data;
7044
7045   gtk_tree_row_reference_free (dr->dest_row);
7046   g_slice_free (DestRow, dr);
7047 }
7048
7049 static void
7050 set_dest_row (GdkDragContext *context,
7051               GtkTreeModel   *model,
7052               GtkTreePath    *dest_row,
7053               gboolean        path_down_mode,
7054               gboolean        empty_view_drop,
7055               gboolean        drop_append_mode)
7056 {
7057   DestRow *dr;
7058
7059   if (!dest_row)
7060     {
7061       g_object_set_data_full (G_OBJECT (context), I_("gtk-tree-view-dest-row"),
7062                               NULL, NULL);
7063       return;
7064     }
7065
7066   dr = g_slice_new (DestRow);
7067
7068   dr->dest_row = gtk_tree_row_reference_new (model, dest_row);
7069   dr->path_down_mode = path_down_mode != FALSE;
7070   dr->empty_view_drop = empty_view_drop != FALSE;
7071   dr->drop_append_mode = drop_append_mode != FALSE;
7072
7073   g_object_set_data_full (G_OBJECT (context), I_("gtk-tree-view-dest-row"),
7074                           dr, (GDestroyNotify) dest_row_free);
7075 }
7076
7077 static GtkTreePath*
7078 get_dest_row (GdkDragContext *context,
7079               gboolean       *path_down_mode)
7080 {
7081   DestRow *dr =
7082     g_object_get_data (G_OBJECT (context), "gtk-tree-view-dest-row");
7083
7084   if (dr)
7085     {
7086       GtkTreePath *path = NULL;
7087
7088       if (path_down_mode)
7089         *path_down_mode = dr->path_down_mode;
7090
7091       if (dr->dest_row)
7092         path = gtk_tree_row_reference_get_path (dr->dest_row);
7093       else if (dr->empty_view_drop)
7094         path = gtk_tree_path_new_from_indices (0, -1);
7095       else
7096         path = NULL;
7097
7098       if (path && dr->drop_append_mode)
7099         gtk_tree_path_next (path);
7100
7101       return path;
7102     }
7103   else
7104     return NULL;
7105 }
7106
7107 /* Get/set whether drag_motion requested the drag data and
7108  * drag_data_received should thus not actually insert the data,
7109  * since the data doesn't result from a drop.
7110  */
7111 static void
7112 set_status_pending (GdkDragContext *context,
7113                     GdkDragAction   suggested_action)
7114 {
7115   g_object_set_data (G_OBJECT (context),
7116                      I_("gtk-tree-view-status-pending"),
7117                      GINT_TO_POINTER (suggested_action));
7118 }
7119
7120 static GdkDragAction
7121 get_status_pending (GdkDragContext *context)
7122 {
7123   return GPOINTER_TO_INT (g_object_get_data (G_OBJECT (context),
7124                                              "gtk-tree-view-status-pending"));
7125 }
7126
7127 static TreeViewDragInfo*
7128 get_info (GtkTreeView *tree_view)
7129 {
7130   return g_object_get_data (G_OBJECT (tree_view), "gtk-tree-view-drag-info");
7131 }
7132
7133 static void
7134 destroy_info (TreeViewDragInfo *di)
7135 {
7136   g_slice_free (TreeViewDragInfo, di);
7137 }
7138
7139 static TreeViewDragInfo*
7140 ensure_info (GtkTreeView *tree_view)
7141 {
7142   TreeViewDragInfo *di;
7143
7144   di = get_info (tree_view);
7145
7146   if (di == NULL)
7147     {
7148       di = g_slice_new0 (TreeViewDragInfo);
7149
7150       g_object_set_data_full (G_OBJECT (tree_view),
7151                               I_("gtk-tree-view-drag-info"),
7152                               di,
7153                               (GDestroyNotify) destroy_info);
7154     }
7155
7156   return di;
7157 }
7158
7159 static void
7160 remove_info (GtkTreeView *tree_view)
7161 {
7162   g_object_set_data (G_OBJECT (tree_view), I_("gtk-tree-view-drag-info"), NULL);
7163 }
7164
7165 #if 0
7166 static gint
7167 drag_scan_timeout (gpointer data)
7168 {
7169   GtkTreeView *tree_view;
7170   gint x, y;
7171   GdkModifierType state;
7172   GtkTreePath *path = NULL;
7173   GtkTreeViewColumn *column = NULL;
7174   GdkRectangle visible_rect;
7175
7176   gdk_threads_enter ();
7177
7178   tree_view = GTK_TREE_VIEW (data);
7179
7180   gdk_window_get_device_position (tree_view->priv->bin_window,
7181                                   gdk_device_manager_get_client_pointer (
7182                                     gdk_display_get_device_manager (
7183                                       gtk_widget_get_display (GTK_WIDGET (tree_view)))),
7184                                   &x, &y, &state);
7185
7186   gtk_tree_view_get_visible_rect (tree_view, &visible_rect);
7187
7188   /* See if we are near the edge. */
7189   if ((x - visible_rect.x) < SCROLL_EDGE_SIZE ||
7190       (visible_rect.x + visible_rect.width - x) < SCROLL_EDGE_SIZE ||
7191       (y - visible_rect.y) < SCROLL_EDGE_SIZE ||
7192       (visible_rect.y + visible_rect.height - y) < SCROLL_EDGE_SIZE)
7193     {
7194       gtk_tree_view_get_path_at_pos (tree_view,
7195                                      tree_view->priv->bin_window,
7196                                      x, y,
7197                                      &path,
7198                                      &column,
7199                                      NULL,
7200                                      NULL);
7201
7202       if (path != NULL)
7203         {
7204           gtk_tree_view_scroll_to_cell (tree_view,
7205                                         path,
7206                                         column,
7207                                         TRUE,
7208                                         0.5, 0.5);
7209
7210           gtk_tree_path_free (path);
7211         }
7212     }
7213
7214   gdk_threads_leave ();
7215
7216   return TRUE;
7217 }
7218 #endif /* 0 */
7219
7220 static void
7221 add_scroll_timeout (GtkTreeView *tree_view)
7222 {
7223   if (tree_view->priv->scroll_timeout == 0)
7224     {
7225       tree_view->priv->scroll_timeout =
7226         gdk_threads_add_timeout (150, scroll_row_timeout, tree_view);
7227     }
7228 }
7229
7230 static void
7231 remove_scroll_timeout (GtkTreeView *tree_view)
7232 {
7233   if (tree_view->priv->scroll_timeout != 0)
7234     {
7235       g_source_remove (tree_view->priv->scroll_timeout);
7236       tree_view->priv->scroll_timeout = 0;
7237     }
7238 }
7239
7240 static gboolean
7241 check_model_dnd (GtkTreeModel *model,
7242                  GType         required_iface,
7243                  const gchar  *signal)
7244 {
7245   if (model == NULL || !G_TYPE_CHECK_INSTANCE_TYPE ((model), required_iface))
7246     {
7247       g_warning ("You must override the default '%s' handler "
7248                  "on GtkTreeView when using models that don't support "
7249                  "the %s interface and enabling drag-and-drop. The simplest way to do this "
7250                  "is to connect to '%s' and call "
7251                  "g_signal_stop_emission_by_name() in your signal handler to prevent "
7252                  "the default handler from running. Look at the source code "
7253                  "for the default handler in gtktreeview.c to get an idea what "
7254                  "your handler should do. (gtktreeview.c is in the GTK source "
7255                  "code.) If you're using GTK from a language other than C, "
7256                  "there may be a more natural way to override default handlers, e.g. via derivation.",
7257                  signal, g_type_name (required_iface), signal);
7258       return FALSE;
7259     }
7260   else
7261     return TRUE;
7262 }
7263
7264 static void
7265 remove_open_timeout (GtkTreeView *tree_view)
7266 {
7267   if (tree_view->priv->open_dest_timeout != 0)
7268     {
7269       g_source_remove (tree_view->priv->open_dest_timeout);
7270       tree_view->priv->open_dest_timeout = 0;
7271     }
7272 }
7273
7274
7275 static gint
7276 open_row_timeout (gpointer data)
7277 {
7278   GtkTreeView *tree_view = data;
7279   GtkTreePath *dest_path = NULL;
7280   GtkTreeViewDropPosition pos;
7281   gboolean result = FALSE;
7282
7283   gtk_tree_view_get_drag_dest_row (tree_view,
7284                                    &dest_path,
7285                                    &pos);
7286
7287   if (dest_path &&
7288       (pos == GTK_TREE_VIEW_DROP_INTO_OR_AFTER ||
7289        pos == GTK_TREE_VIEW_DROP_INTO_OR_BEFORE))
7290     {
7291       gtk_tree_view_expand_row (tree_view, dest_path, FALSE);
7292       tree_view->priv->open_dest_timeout = 0;
7293
7294       gtk_tree_path_free (dest_path);
7295     }
7296   else
7297     {
7298       if (dest_path)
7299         gtk_tree_path_free (dest_path);
7300
7301       result = TRUE;
7302     }
7303
7304   return result;
7305 }
7306
7307 static gboolean
7308 scroll_row_timeout (gpointer data)
7309 {
7310   GtkTreeView *tree_view = data;
7311
7312   gtk_tree_view_vertical_autoscroll (tree_view);
7313
7314   if (tree_view->priv->rubber_band_status == RUBBER_BAND_ACTIVE)
7315     gtk_tree_view_update_rubber_band (tree_view);
7316
7317   return TRUE;
7318 }
7319
7320 /* Returns TRUE if event should not be propagated to parent widgets */
7321 static gboolean
7322 set_destination_row (GtkTreeView    *tree_view,
7323                      GdkDragContext *context,
7324                      /* coordinates relative to the widget */
7325                      gint            x,
7326                      gint            y,
7327                      GdkDragAction  *suggested_action,
7328                      GdkAtom        *target)
7329 {
7330   GtkTreePath *path = NULL;
7331   GtkTreeViewDropPosition pos;
7332   GtkTreeViewDropPosition old_pos;
7333   TreeViewDragInfo *di;
7334   GtkWidget *widget;
7335   GtkTreePath *old_dest_path = NULL;
7336   gboolean can_drop = FALSE;
7337
7338   *suggested_action = 0;
7339   *target = GDK_NONE;
7340
7341   widget = GTK_WIDGET (tree_view);
7342
7343   di = get_info (tree_view);
7344
7345   if (di == NULL || y - gtk_tree_view_get_effective_header_height (tree_view) < 0)
7346     {
7347       /* someone unset us as a drag dest, note that if
7348        * we return FALSE drag_leave isn't called
7349        */
7350
7351       gtk_tree_view_set_drag_dest_row (tree_view,
7352                                        NULL,
7353                                        GTK_TREE_VIEW_DROP_BEFORE);
7354
7355       remove_scroll_timeout (GTK_TREE_VIEW (widget));
7356       remove_open_timeout (GTK_TREE_VIEW (widget));
7357
7358       return FALSE; /* no longer a drop site */
7359     }
7360
7361   *target = gtk_drag_dest_find_target (widget, context,
7362                                        gtk_drag_dest_get_target_list (widget));
7363   if (*target == GDK_NONE)
7364     {
7365       return FALSE;
7366     }
7367
7368   if (!gtk_tree_view_get_dest_row_at_pos (tree_view,
7369                                           x, y,
7370                                           &path,
7371                                           &pos))
7372     {
7373       gint n_children;
7374       GtkTreeModel *model;
7375
7376       remove_open_timeout (tree_view);
7377
7378       /* the row got dropped on empty space, let's setup a special case
7379        */
7380
7381       if (path)
7382         gtk_tree_path_free (path);
7383
7384       model = gtk_tree_view_get_model (tree_view);
7385
7386       n_children = gtk_tree_model_iter_n_children (model, NULL);
7387       if (n_children)
7388         {
7389           pos = GTK_TREE_VIEW_DROP_AFTER;
7390           path = gtk_tree_path_new_from_indices (n_children - 1, -1);
7391         }
7392       else
7393         {
7394           pos = GTK_TREE_VIEW_DROP_BEFORE;
7395           path = gtk_tree_path_new_from_indices (0, -1);
7396         }
7397
7398       can_drop = TRUE;
7399
7400       goto out;
7401     }
7402
7403   g_assert (path);
7404
7405   /* If we left the current row's "open" zone, unset the timeout for
7406    * opening the row
7407    */
7408   gtk_tree_view_get_drag_dest_row (tree_view,
7409                                    &old_dest_path,
7410                                    &old_pos);
7411
7412   if (old_dest_path &&
7413       (gtk_tree_path_compare (path, old_dest_path) != 0 ||
7414        !(pos == GTK_TREE_VIEW_DROP_INTO_OR_AFTER ||
7415          pos == GTK_TREE_VIEW_DROP_INTO_OR_BEFORE)))
7416     remove_open_timeout (tree_view);
7417
7418   if (old_dest_path)
7419     gtk_tree_path_free (old_dest_path);
7420
7421   if (TRUE /* FIXME if the location droppable predicate */)
7422     {
7423       can_drop = TRUE;
7424     }
7425
7426 out:
7427   if (can_drop)
7428     {
7429       GtkWidget *source_widget;
7430
7431       *suggested_action = gdk_drag_context_get_suggested_action (context);
7432       source_widget = gtk_drag_get_source_widget (context);
7433
7434       if (source_widget == widget)
7435         {
7436           /* Default to MOVE, unless the user has
7437            * pressed ctrl or shift to affect available actions
7438            */
7439           if ((gdk_drag_context_get_actions (context) & GDK_ACTION_MOVE) != 0)
7440             *suggested_action = GDK_ACTION_MOVE;
7441         }
7442
7443       gtk_tree_view_set_drag_dest_row (GTK_TREE_VIEW (widget),
7444                                        path, pos);
7445     }
7446   else
7447     {
7448       /* can't drop here */
7449       remove_open_timeout (tree_view);
7450
7451       gtk_tree_view_set_drag_dest_row (GTK_TREE_VIEW (widget),
7452                                        NULL,
7453                                        GTK_TREE_VIEW_DROP_BEFORE);
7454     }
7455
7456   if (path)
7457     gtk_tree_path_free (path);
7458
7459   return TRUE;
7460 }
7461
7462 static GtkTreePath*
7463 get_logical_dest_row (GtkTreeView *tree_view,
7464                       gboolean    *path_down_mode,
7465                       gboolean    *drop_append_mode)
7466 {
7467   /* adjust path to point to the row the drop goes in front of */
7468   GtkTreePath *path = NULL;
7469   GtkTreeViewDropPosition pos;
7470
7471   g_return_val_if_fail (path_down_mode != NULL, NULL);
7472   g_return_val_if_fail (drop_append_mode != NULL, NULL);
7473
7474   *path_down_mode = FALSE;
7475   *drop_append_mode = 0;
7476
7477   gtk_tree_view_get_drag_dest_row (tree_view, &path, &pos);
7478
7479   if (path == NULL)
7480     return NULL;
7481
7482   if (pos == GTK_TREE_VIEW_DROP_BEFORE)
7483     ; /* do nothing */
7484   else if (pos == GTK_TREE_VIEW_DROP_INTO_OR_BEFORE ||
7485            pos == GTK_TREE_VIEW_DROP_INTO_OR_AFTER)
7486     *path_down_mode = TRUE;
7487   else
7488     {
7489       GtkTreeIter iter;
7490       GtkTreeModel *model = gtk_tree_view_get_model (tree_view);
7491
7492       g_assert (pos == GTK_TREE_VIEW_DROP_AFTER);
7493
7494       if (!gtk_tree_model_get_iter (model, &iter, path) ||
7495           !gtk_tree_model_iter_next (model, &iter))
7496         *drop_append_mode = 1;
7497       else
7498         {
7499           *drop_append_mode = 0;
7500           gtk_tree_path_next (path);
7501         }
7502     }
7503
7504   return path;
7505 }
7506
7507 static gboolean
7508 gtk_tree_view_maybe_begin_dragging_row (GtkTreeView      *tree_view,
7509                                         GdkEventMotion   *event)
7510 {
7511   GtkWidget *widget = GTK_WIDGET (tree_view);
7512   GdkDragContext *context;
7513   TreeViewDragInfo *di;
7514   GtkTreePath *path = NULL;
7515   gint button;
7516   gint cell_x, cell_y;
7517   GtkTreeModel *model;
7518   gboolean retval = FALSE;
7519
7520   di = get_info (tree_view);
7521
7522   if (di == NULL || !di->source_set)
7523     goto out;
7524
7525   if (tree_view->priv->pressed_button < 0)
7526     goto out;
7527
7528   if (!gtk_drag_check_threshold (widget,
7529                                  tree_view->priv->press_start_x,
7530                                  tree_view->priv->press_start_y,
7531                                  event->x, event->y))
7532     goto out;
7533
7534   model = gtk_tree_view_get_model (tree_view);
7535
7536   if (model == NULL)
7537     goto out;
7538
7539   button = tree_view->priv->pressed_button;
7540   tree_view->priv->pressed_button = -1;
7541
7542   gtk_tree_view_get_path_at_pos (tree_view,
7543                                  tree_view->priv->press_start_x,
7544                                  tree_view->priv->press_start_y,
7545                                  &path,
7546                                  NULL,
7547                                  &cell_x,
7548                                  &cell_y);
7549
7550   if (path == NULL)
7551     goto out;
7552
7553   if (!GTK_IS_TREE_DRAG_SOURCE (model) ||
7554       !gtk_tree_drag_source_row_draggable (GTK_TREE_DRAG_SOURCE (model),
7555                                            path))
7556     goto out;
7557
7558   if (!(GDK_BUTTON1_MASK << (button - 1) & di->start_button_mask))
7559     goto out;
7560
7561   /* Now we can begin the drag */
7562
7563   retval = TRUE;
7564
7565   context = gtk_drag_begin (widget,
7566                             gtk_drag_source_get_target_list (widget),
7567                             di->source_actions,
7568                             button,
7569                             (GdkEvent*)event);
7570
7571   set_source_row (context, model, path);
7572
7573  out:
7574   if (path)
7575     gtk_tree_path_free (path);
7576
7577   return retval;
7578 }
7579
7580
7581 static void
7582 gtk_tree_view_drag_begin (GtkWidget      *widget,
7583                           GdkDragContext *context)
7584 {
7585   GtkTreeView *tree_view;
7586   GtkTreePath *path = NULL;
7587   gint cell_x, cell_y;
7588   cairo_surface_t *row_pix;
7589   TreeViewDragInfo *di;
7590
7591   tree_view = GTK_TREE_VIEW (widget);
7592
7593   /* if the user uses a custom DND source impl, we don't set the icon here */
7594   di = get_info (tree_view);
7595
7596   if (di == NULL || !di->source_set)
7597     return;
7598
7599   gtk_tree_view_get_path_at_pos (tree_view,
7600                                  tree_view->priv->press_start_x,
7601                                  tree_view->priv->press_start_y,
7602                                  &path,
7603                                  NULL,
7604                                  &cell_x,
7605                                  &cell_y);
7606
7607   /* If path is NULL, there's nothing we can drag.  For now, we silently
7608    * bail out.  Actually, dragging should not be possible from an empty
7609    * tree view, but there's no way we can cancel that from here.
7610    * Automatically unsetting the tree view as drag source for empty models
7611    * is something that would likely break other people's code ...
7612    */
7613   if (!path)
7614     return;
7615
7616   row_pix = gtk_tree_view_create_row_drag_icon (tree_view,
7617                                                 path);
7618   cairo_surface_set_device_offset (row_pix,
7619                                    /* the + 1 is for the black border in the icon */
7620                                    - (tree_view->priv->press_start_x + 1),
7621                                    - (cell_y + 1));
7622
7623   gtk_drag_set_icon_surface (context, row_pix);
7624
7625   cairo_surface_destroy (row_pix);
7626   gtk_tree_path_free (path);
7627 }
7628
7629 static void
7630 gtk_tree_view_drag_end (GtkWidget      *widget,
7631                         GdkDragContext *context)
7632 {
7633   /* do nothing */
7634 }
7635
7636 /* Default signal implementations for the drag signals */
7637 static void
7638 gtk_tree_view_drag_data_get (GtkWidget        *widget,
7639                              GdkDragContext   *context,
7640                              GtkSelectionData *selection_data,
7641                              guint             info,
7642                              guint             time)
7643 {
7644   GtkTreeView *tree_view;
7645   GtkTreeModel *model;
7646   TreeViewDragInfo *di;
7647   GtkTreePath *source_row;
7648
7649   tree_view = GTK_TREE_VIEW (widget);
7650
7651   model = gtk_tree_view_get_model (tree_view);
7652
7653   if (model == NULL)
7654     return;
7655
7656   di = get_info (GTK_TREE_VIEW (widget));
7657
7658   if (di == NULL)
7659     return;
7660
7661   source_row = get_source_row (context);
7662
7663   if (source_row == NULL)
7664     return;
7665
7666   /* We can implement the GTK_TREE_MODEL_ROW target generically for
7667    * any model; for DragSource models there are some other targets
7668    * we also support.
7669    */
7670
7671   if (GTK_IS_TREE_DRAG_SOURCE (model) &&
7672       gtk_tree_drag_source_drag_data_get (GTK_TREE_DRAG_SOURCE (model),
7673                                           source_row,
7674                                           selection_data))
7675     goto done;
7676
7677   /* If drag_data_get does nothing, try providing row data. */
7678   if (gtk_selection_data_get_target (selection_data) == gdk_atom_intern_static_string ("GTK_TREE_MODEL_ROW"))
7679     {
7680       gtk_tree_set_row_drag_data (selection_data,
7681                                   model,
7682                                   source_row);
7683     }
7684
7685  done:
7686   gtk_tree_path_free (source_row);
7687 }
7688
7689
7690 static void
7691 gtk_tree_view_drag_data_delete (GtkWidget      *widget,
7692                                 GdkDragContext *context)
7693 {
7694   TreeViewDragInfo *di;
7695   GtkTreeModel *model;
7696   GtkTreeView *tree_view;
7697   GtkTreePath *source_row;
7698
7699   tree_view = GTK_TREE_VIEW (widget);
7700   model = gtk_tree_view_get_model (tree_view);
7701
7702   if (!check_model_dnd (model, GTK_TYPE_TREE_DRAG_SOURCE, "drag_data_delete"))
7703     return;
7704
7705   di = get_info (tree_view);
7706
7707   if (di == NULL)
7708     return;
7709
7710   source_row = get_source_row (context);
7711
7712   if (source_row == NULL)
7713     return;
7714
7715   gtk_tree_drag_source_drag_data_delete (GTK_TREE_DRAG_SOURCE (model),
7716                                          source_row);
7717
7718   gtk_tree_path_free (source_row);
7719
7720   set_source_row (context, NULL, NULL);
7721 }
7722
7723 static void
7724 gtk_tree_view_drag_leave (GtkWidget      *widget,
7725                           GdkDragContext *context,
7726                           guint             time)
7727 {
7728   /* unset any highlight row */
7729   gtk_tree_view_set_drag_dest_row (GTK_TREE_VIEW (widget),
7730                                    NULL,
7731                                    GTK_TREE_VIEW_DROP_BEFORE);
7732
7733   remove_scroll_timeout (GTK_TREE_VIEW (widget));
7734   remove_open_timeout (GTK_TREE_VIEW (widget));
7735 }
7736
7737
7738 static gboolean
7739 gtk_tree_view_drag_motion (GtkWidget        *widget,
7740                            GdkDragContext   *context,
7741                            /* coordinates relative to the widget */
7742                            gint              x,
7743                            gint              y,
7744                            guint             time)
7745 {
7746   gboolean empty;
7747   GtkTreePath *path = NULL;
7748   GtkTreeViewDropPosition pos;
7749   GtkTreeView *tree_view;
7750   GdkDragAction suggested_action = 0;
7751   GdkAtom target;
7752
7753   tree_view = GTK_TREE_VIEW (widget);
7754
7755   if (!set_destination_row (tree_view, context, x, y, &suggested_action, &target))
7756     return FALSE;
7757
7758   gtk_tree_view_get_drag_dest_row (tree_view, &path, &pos);
7759
7760   /* we only know this *after* set_desination_row */
7761   empty = tree_view->priv->empty_view_drop;
7762
7763   if (path == NULL && !empty)
7764     {
7765       /* Can't drop here. */
7766       gdk_drag_status (context, 0, time);
7767     }
7768   else
7769     {
7770       if (tree_view->priv->open_dest_timeout == 0 &&
7771           (pos == GTK_TREE_VIEW_DROP_INTO_OR_AFTER ||
7772            pos == GTK_TREE_VIEW_DROP_INTO_OR_BEFORE))
7773         {
7774           tree_view->priv->open_dest_timeout =
7775             gdk_threads_add_timeout (AUTO_EXPAND_TIMEOUT, open_row_timeout, tree_view);
7776         }
7777       else
7778         {
7779           add_scroll_timeout (tree_view);
7780         }
7781
7782       if (target == gdk_atom_intern_static_string ("GTK_TREE_MODEL_ROW"))
7783         {
7784           /* Request data so we can use the source row when
7785            * determining whether to accept the drop
7786            */
7787           set_status_pending (context, suggested_action);
7788           gtk_drag_get_data (widget, context, target, time);
7789         }
7790       else
7791         {
7792           set_status_pending (context, 0);
7793           gdk_drag_status (context, suggested_action, time);
7794         }
7795     }
7796
7797   if (path)
7798     gtk_tree_path_free (path);
7799
7800   return TRUE;
7801 }
7802
7803
7804 static gboolean
7805 gtk_tree_view_drag_drop (GtkWidget        *widget,
7806                          GdkDragContext   *context,
7807                          /* coordinates relative to the widget */
7808                          gint              x,
7809                          gint              y,
7810                          guint             time)
7811 {
7812   GtkTreeView *tree_view;
7813   GtkTreePath *path;
7814   GdkDragAction suggested_action = 0;
7815   GdkAtom target = GDK_NONE;
7816   TreeViewDragInfo *di;
7817   GtkTreeModel *model;
7818   gboolean path_down_mode;
7819   gboolean drop_append_mode;
7820
7821   tree_view = GTK_TREE_VIEW (widget);
7822
7823   model = gtk_tree_view_get_model (tree_view);
7824
7825   remove_scroll_timeout (GTK_TREE_VIEW (widget));
7826   remove_open_timeout (GTK_TREE_VIEW (widget));
7827
7828   di = get_info (tree_view);
7829
7830   if (di == NULL)
7831     return FALSE;
7832
7833   if (!check_model_dnd (model, GTK_TYPE_TREE_DRAG_DEST, "drag_drop"))
7834     return FALSE;
7835
7836   if (!set_destination_row (tree_view, context, x, y, &suggested_action, &target))
7837     return FALSE;
7838
7839   path = get_logical_dest_row (tree_view, &path_down_mode, &drop_append_mode);
7840
7841   if (target != GDK_NONE && path != NULL)
7842     {
7843       /* in case a motion had requested drag data, change things so we
7844        * treat drag data receives as a drop.
7845        */
7846       set_status_pending (context, 0);
7847       set_dest_row (context, model, path,
7848                     path_down_mode, tree_view->priv->empty_view_drop,
7849                     drop_append_mode);
7850     }
7851
7852   if (path)
7853     gtk_tree_path_free (path);
7854
7855   /* Unset this thing */
7856   gtk_tree_view_set_drag_dest_row (GTK_TREE_VIEW (widget),
7857                                    NULL,
7858                                    GTK_TREE_VIEW_DROP_BEFORE);
7859
7860   if (target != GDK_NONE)
7861     {
7862       gtk_drag_get_data (widget, context, target, time);
7863       return TRUE;
7864     }
7865   else
7866     return FALSE;
7867 }
7868
7869 static void
7870 gtk_tree_view_drag_data_received (GtkWidget        *widget,
7871                                   GdkDragContext   *context,
7872                                   /* coordinates relative to the widget */
7873                                   gint              x,
7874                                   gint              y,
7875                                   GtkSelectionData *selection_data,
7876                                   guint             info,
7877                                   guint             time)
7878 {
7879   GtkTreePath *path;
7880   TreeViewDragInfo *di;
7881   gboolean accepted = FALSE;
7882   GtkTreeModel *model;
7883   GtkTreeView *tree_view;
7884   GtkTreePath *dest_row;
7885   GdkDragAction suggested_action;
7886   gboolean path_down_mode;
7887   gboolean drop_append_mode;
7888
7889   tree_view = GTK_TREE_VIEW (widget);
7890
7891   model = gtk_tree_view_get_model (tree_view);
7892
7893   if (!check_model_dnd (model, GTK_TYPE_TREE_DRAG_DEST, "drag_data_received"))
7894     return;
7895
7896   di = get_info (tree_view);
7897
7898   if (di == NULL)
7899     return;
7900
7901   suggested_action = get_status_pending (context);
7902
7903   if (suggested_action)
7904     {
7905       /* We are getting this data due to a request in drag_motion,
7906        * rather than due to a request in drag_drop, so we are just
7907        * supposed to call drag_status, not actually paste in the
7908        * data.
7909        */
7910       path = get_logical_dest_row (tree_view, &path_down_mode,
7911                                    &drop_append_mode);
7912
7913       if (path == NULL)
7914         suggested_action = 0;
7915       else if (path_down_mode)
7916         gtk_tree_path_down (path);
7917
7918       if (suggested_action)
7919         {
7920           if (!gtk_tree_drag_dest_row_drop_possible (GTK_TREE_DRAG_DEST (model),
7921                                                      path,
7922                                                      selection_data))
7923             {
7924               if (path_down_mode)
7925                 {
7926                   path_down_mode = FALSE;
7927                   gtk_tree_path_up (path);
7928
7929                   if (!gtk_tree_drag_dest_row_drop_possible (GTK_TREE_DRAG_DEST (model),
7930                                                              path,
7931                                                              selection_data))
7932                     suggested_action = 0;
7933                 }
7934               else
7935                 suggested_action = 0;
7936             }
7937         }
7938
7939       gdk_drag_status (context, suggested_action, time);
7940
7941       if (path)
7942         gtk_tree_path_free (path);
7943
7944       /* If you can't drop, remove user drop indicator until the next motion */
7945       if (suggested_action == 0)
7946         gtk_tree_view_set_drag_dest_row (GTK_TREE_VIEW (widget),
7947                                          NULL,
7948                                          GTK_TREE_VIEW_DROP_BEFORE);
7949
7950       return;
7951     }
7952
7953   dest_row = get_dest_row (context, &path_down_mode);
7954
7955   if (dest_row == NULL)
7956     return;
7957
7958   if (gtk_selection_data_get_length (selection_data) >= 0)
7959     {
7960       if (path_down_mode)
7961         {
7962           gtk_tree_path_down (dest_row);
7963           if (!gtk_tree_drag_dest_row_drop_possible (GTK_TREE_DRAG_DEST (model),
7964                                                      dest_row, selection_data))
7965             gtk_tree_path_up (dest_row);
7966         }
7967     }
7968
7969   if (gtk_selection_data_get_length (selection_data) >= 0)
7970     {
7971       if (gtk_tree_drag_dest_drag_data_received (GTK_TREE_DRAG_DEST (model),
7972                                                  dest_row,
7973                                                  selection_data))
7974         accepted = TRUE;
7975     }
7976
7977   gtk_drag_finish (context,
7978                    accepted,
7979                    (gdk_drag_context_get_selected_action (context) == GDK_ACTION_MOVE),
7980                    time);
7981
7982   if (gtk_tree_path_get_depth (dest_row) == 1 &&
7983       gtk_tree_path_get_indices (dest_row)[0] == 0 &&
7984       gtk_tree_model_iter_n_children (tree_view->priv->model, NULL) != 0)
7985     {
7986       /* special special case drag to "0", scroll to first item */
7987       if (!tree_view->priv->scroll_to_path)
7988         gtk_tree_view_scroll_to_cell (tree_view, dest_row, NULL, FALSE, 0.0, 0.0);
7989     }
7990
7991   gtk_tree_path_free (dest_row);
7992
7993   /* drop dest_row */
7994   set_dest_row (context, NULL, NULL, FALSE, FALSE, FALSE);
7995 }
7996
7997
7998
7999 /* GtkContainer Methods
8000  */
8001
8002
8003 static void
8004 gtk_tree_view_remove (GtkContainer *container,
8005                       GtkWidget    *widget)
8006 {
8007   GtkTreeView *tree_view = GTK_TREE_VIEW (container);
8008   GtkTreeViewChild *child = NULL;
8009   GList *tmp_list;
8010
8011   tmp_list = tree_view->priv->children;
8012   while (tmp_list)
8013     {
8014       child = tmp_list->data;
8015       if (child->widget == widget)
8016         {
8017           gtk_widget_unparent (widget);
8018
8019           tree_view->priv->children = g_list_remove_link (tree_view->priv->children, tmp_list);
8020           g_list_free_1 (tmp_list);
8021           g_slice_free (GtkTreeViewChild, child);
8022           return;
8023         }
8024
8025       tmp_list = tmp_list->next;
8026     }
8027
8028   tmp_list = tree_view->priv->columns;
8029
8030   while (tmp_list)
8031     {
8032       GtkTreeViewColumn *column;
8033       GtkWidget         *button;
8034
8035       column = tmp_list->data;
8036       button = gtk_tree_view_column_get_button (column);
8037
8038       if (button == widget)
8039         {
8040           gtk_widget_unparent (widget);
8041           return;
8042         }
8043       tmp_list = tmp_list->next;
8044     }
8045 }
8046
8047 static void
8048 gtk_tree_view_forall (GtkContainer *container,
8049                       gboolean      include_internals,
8050                       GtkCallback   callback,
8051                       gpointer      callback_data)
8052 {
8053   GtkTreeView *tree_view = GTK_TREE_VIEW (container);
8054   GtkTreeViewChild *child = NULL;
8055   GtkTreeViewColumn *column;
8056   GtkWidget *button;
8057   GList *tmp_list;
8058
8059   tmp_list = tree_view->priv->children;
8060   while (tmp_list)
8061     {
8062       child = tmp_list->data;
8063       tmp_list = tmp_list->next;
8064
8065       (* callback) (child->widget, callback_data);
8066     }
8067   if (include_internals == FALSE)
8068     return;
8069
8070   for (tmp_list = tree_view->priv->columns; tmp_list; tmp_list = tmp_list->next)
8071     {
8072       column = tmp_list->data;
8073       button = gtk_tree_view_column_get_button (column);
8074
8075       if (button)
8076         (* callback) (button, callback_data);
8077     }
8078 }
8079
8080 /* Returns TRUE is any of the columns contains a cell that can-focus.
8081  * If this is not the case, a column-spanning focus rectangle will be
8082  * drawn.
8083  */
8084 static gboolean
8085 gtk_tree_view_has_can_focus_cell (GtkTreeView *tree_view)
8086 {
8087   GList *list;
8088
8089   for (list = tree_view->priv->columns; list; list = list->next)
8090     {
8091       GtkTreeViewColumn *column = list->data;
8092
8093       if (!gtk_tree_view_column_get_visible (column))
8094         continue;
8095       if (gtk_cell_area_is_activatable (gtk_cell_layout_get_area (GTK_CELL_LAYOUT (column))))
8096         return TRUE;
8097     }
8098
8099   return FALSE;
8100 }
8101
8102 static void
8103 column_sizing_notify (GObject    *object,
8104                       GParamSpec *pspec,
8105                       gpointer    data)
8106 {
8107   GtkTreeViewColumn *c = GTK_TREE_VIEW_COLUMN (object);
8108
8109   if (gtk_tree_view_column_get_sizing (c) != GTK_TREE_VIEW_COLUMN_FIXED)
8110     /* disable fixed height mode */
8111     g_object_set (data, "fixed-height-mode", FALSE, NULL);
8112 }
8113
8114 /**
8115  * gtk_tree_view_set_fixed_height_mode:
8116  * @tree_view: a #GtkTreeView
8117  * @enable: %TRUE to enable fixed height mode
8118  *
8119  * Enables or disables the fixed height mode of @tree_view.
8120  * Fixed height mode speeds up #GtkTreeView by assuming that all
8121  * rows have the same height.
8122  * Only enable this option if all rows are the same height and all
8123  * columns are of type %GTK_TREE_VIEW_COLUMN_FIXED.
8124  *
8125  * Since: 2.6
8126  **/
8127 void
8128 gtk_tree_view_set_fixed_height_mode (GtkTreeView *tree_view,
8129                                      gboolean     enable)
8130 {
8131   GList *l;
8132
8133   enable = enable != FALSE;
8134
8135   if (enable == tree_view->priv->fixed_height_mode)
8136     return;
8137
8138   if (!enable)
8139     {
8140       tree_view->priv->fixed_height_mode = 0;
8141       tree_view->priv->fixed_height = -1;
8142     }
8143   else
8144     {
8145       /* make sure all columns are of type FIXED */
8146       for (l = tree_view->priv->columns; l; l = l->next)
8147         {
8148           GtkTreeViewColumn *c = l->data;
8149
8150           g_return_if_fail (gtk_tree_view_column_get_sizing (c) == GTK_TREE_VIEW_COLUMN_FIXED);
8151         }
8152
8153       /* yes, we really have to do this is in a separate loop */
8154       for (l = tree_view->priv->columns; l; l = l->next)
8155         g_signal_connect (l->data, "notify::sizing",
8156                           G_CALLBACK (column_sizing_notify), tree_view);
8157
8158       tree_view->priv->fixed_height_mode = 1;
8159       tree_view->priv->fixed_height = -1;
8160     }
8161
8162   /* force a revalidation */
8163   install_presize_handler (tree_view);
8164
8165   g_object_notify (G_OBJECT (tree_view), "fixed-height-mode");
8166 }
8167
8168 /**
8169  * gtk_tree_view_get_fixed_height_mode:
8170  * @tree_view: a #GtkTreeView
8171  *
8172  * Returns whether fixed height mode is turned on for @tree_view.
8173  *
8174  * Return value: %TRUE if @tree_view is in fixed height mode
8175  *
8176  * Since: 2.6
8177  **/
8178 gboolean
8179 gtk_tree_view_get_fixed_height_mode (GtkTreeView *tree_view)
8180 {
8181   return tree_view->priv->fixed_height_mode;
8182 }
8183
8184 /* Returns TRUE if the focus is within the headers, after the focus operation is
8185  * done
8186  */
8187 static gboolean
8188 gtk_tree_view_header_focus (GtkTreeView      *tree_view,
8189                             GtkDirectionType  dir,
8190                             gboolean          clamp_column_visible)
8191 {
8192   GtkTreeViewColumn *column;
8193   GtkWidget *focus_child;
8194   GtkWidget *button;
8195   GList *last_column, *first_column;
8196   GList *tmp_list;
8197   gboolean rtl;
8198
8199   if (! tree_view->priv->headers_visible)
8200     return FALSE;
8201
8202   focus_child = gtk_container_get_focus_child (GTK_CONTAINER (tree_view));
8203
8204   first_column = tree_view->priv->columns;
8205   while (first_column)
8206     {
8207       column = GTK_TREE_VIEW_COLUMN (first_column->data);
8208       button = gtk_tree_view_column_get_button (column);
8209
8210       if (gtk_widget_get_can_focus (button) &&
8211           gtk_tree_view_column_get_visible (column) &&
8212           (gtk_tree_view_column_get_clickable (column) ||
8213            gtk_tree_view_column_get_reorderable (column)))
8214         break;
8215       first_column = first_column->next;
8216     }
8217
8218   /* No headers are visible, or are focusable.  We can't focus in or out.
8219    */
8220   if (first_column == NULL)
8221     return FALSE;
8222
8223   last_column = g_list_last (tree_view->priv->columns);
8224   while (last_column)
8225     {
8226       column = GTK_TREE_VIEW_COLUMN (last_column->data);
8227       button = gtk_tree_view_column_get_button (column);
8228
8229       if (gtk_widget_get_can_focus (button) &&
8230           gtk_tree_view_column_get_visible (column) &&
8231           (gtk_tree_view_column_get_clickable (column) ||
8232            gtk_tree_view_column_get_reorderable (column)))
8233         break;
8234       last_column = last_column->prev;
8235     }
8236
8237
8238   rtl = (gtk_widget_get_direction (GTK_WIDGET (tree_view)) == GTK_TEXT_DIR_RTL);
8239
8240   switch (dir)
8241     {
8242     case GTK_DIR_TAB_BACKWARD:
8243     case GTK_DIR_TAB_FORWARD:
8244     case GTK_DIR_UP:
8245     case GTK_DIR_DOWN:
8246       if (focus_child == NULL)
8247         {
8248           if (tree_view->priv->focus_column != NULL)
8249             button = gtk_tree_view_column_get_button (tree_view->priv->focus_column);
8250           else
8251             button = NULL;
8252
8253           if (button && gtk_widget_get_can_focus (button))
8254             focus_child = button;
8255           else
8256             focus_child = gtk_tree_view_column_get_button (GTK_TREE_VIEW_COLUMN (first_column->data));
8257
8258           gtk_widget_grab_focus (focus_child);
8259           break;
8260         }
8261       return FALSE;
8262
8263     case GTK_DIR_LEFT:
8264     case GTK_DIR_RIGHT:
8265       if (focus_child == NULL)
8266         {
8267           if (tree_view->priv->focus_column != NULL)
8268             focus_child = gtk_tree_view_column_get_button (tree_view->priv->focus_column);
8269           else if (dir == GTK_DIR_LEFT)
8270             focus_child = gtk_tree_view_column_get_button (GTK_TREE_VIEW_COLUMN (last_column->data));
8271           else
8272             focus_child = gtk_tree_view_column_get_button (GTK_TREE_VIEW_COLUMN (first_column->data));
8273
8274           gtk_widget_grab_focus (focus_child);
8275           break;
8276         }
8277
8278       if (gtk_widget_child_focus (focus_child, dir))
8279         {
8280           /* The focus moves inside the button. */
8281           /* This is probably a great example of bad UI */
8282           break;
8283         }
8284
8285       /* We need to move the focus among the row of buttons. */
8286       for (tmp_list = tree_view->priv->columns; tmp_list; tmp_list = tmp_list->next)
8287         if (gtk_tree_view_column_get_button (GTK_TREE_VIEW_COLUMN (tmp_list->data)) == focus_child)
8288           break;
8289
8290       if ((tmp_list == first_column && dir == (rtl ? GTK_DIR_RIGHT : GTK_DIR_LEFT))
8291           || (tmp_list == last_column && dir == (rtl ? GTK_DIR_LEFT : GTK_DIR_RIGHT)))
8292         {
8293           gtk_widget_error_bell (GTK_WIDGET (tree_view));
8294           break;
8295         }
8296
8297       while (tmp_list)
8298         {
8299           GtkTreeViewColumn *column;
8300           GtkWidget         *button;
8301
8302           if (dir == (rtl ? GTK_DIR_LEFT : GTK_DIR_RIGHT))
8303             tmp_list = tmp_list->next;
8304           else
8305             tmp_list = tmp_list->prev;
8306
8307           if (tmp_list == NULL)
8308             {
8309               g_warning ("Internal button not found");
8310               break;
8311             }
8312           column = tmp_list->data;
8313           button = gtk_tree_view_column_get_button (column);
8314           if (button &&
8315               gtk_tree_view_column_get_visible (column) &&
8316               gtk_widget_get_can_focus (button))
8317             {
8318               focus_child = button;
8319               gtk_widget_grab_focus (button);
8320               break;
8321             }
8322         }
8323       break;
8324     default:
8325       g_assert_not_reached ();
8326       break;
8327     }
8328
8329   /* if focus child is non-null, we assume it's been set to the current focus child
8330    */
8331   if (focus_child)
8332     {
8333       for (tmp_list = tree_view->priv->columns; tmp_list; tmp_list = tmp_list->next)
8334         if (gtk_tree_view_column_get_button (GTK_TREE_VIEW_COLUMN (tmp_list->data)) == focus_child)
8335           {
8336             _gtk_tree_view_set_focus_column (tree_view, GTK_TREE_VIEW_COLUMN (tmp_list->data));
8337             break;
8338           }
8339
8340       if (clamp_column_visible)
8341         {
8342           gtk_tree_view_clamp_column_visible (tree_view,
8343                                               tree_view->priv->focus_column,
8344                                               FALSE);
8345         }
8346     }
8347
8348   return (focus_child != NULL);
8349 }
8350
8351 /* This function returns in 'path' the first focusable path, if the given path
8352  * is already focusable, it's the returned one.
8353  */
8354 static gboolean
8355 search_first_focusable_path (GtkTreeView  *tree_view,
8356                              GtkTreePath **path,
8357                              gboolean      search_forward,
8358                              GtkRBTree   **new_tree,
8359                              GtkRBNode   **new_node)
8360 {
8361   GtkRBTree *tree = NULL;
8362   GtkRBNode *node = NULL;
8363
8364   if (!path || !*path)
8365     return FALSE;
8366
8367   _gtk_tree_view_find_node (tree_view, *path, &tree, &node);
8368
8369   if (!tree || !node)
8370     return FALSE;
8371
8372   while (node && row_is_separator (tree_view, NULL, *path))
8373     {
8374       if (search_forward)
8375         _gtk_rbtree_next_full (tree, node, &tree, &node);
8376       else
8377         _gtk_rbtree_prev_full (tree, node, &tree, &node);
8378
8379       if (*path)
8380         gtk_tree_path_free (*path);
8381
8382       if (node)
8383         *path = _gtk_tree_path_new_from_rbtree (tree, node);
8384       else
8385         *path = NULL;
8386     }
8387
8388   if (new_tree)
8389     *new_tree = tree;
8390
8391   if (new_node)
8392     *new_node = node;
8393
8394   return (*path != NULL);
8395 }
8396
8397 static gint
8398 gtk_tree_view_focus (GtkWidget        *widget,
8399                      GtkDirectionType  direction)
8400 {
8401   GtkTreeView *tree_view = GTK_TREE_VIEW (widget);
8402   GtkContainer *container = GTK_CONTAINER (widget);
8403   GtkWidget *focus_child;
8404
8405   if (!gtk_widget_is_sensitive (widget) || !gtk_widget_get_can_focus (widget))
8406     return FALSE;
8407
8408   focus_child = gtk_container_get_focus_child (container);
8409
8410   gtk_tree_view_stop_editing (GTK_TREE_VIEW (widget), FALSE);
8411   /* Case 1.  Headers currently have focus. */
8412   if (focus_child)
8413     {
8414       switch (direction)
8415         {
8416         case GTK_DIR_LEFT:
8417         case GTK_DIR_RIGHT:
8418           gtk_tree_view_header_focus (tree_view, direction, TRUE);
8419           return TRUE;
8420         case GTK_DIR_TAB_BACKWARD:
8421         case GTK_DIR_UP:
8422           return FALSE;
8423         case GTK_DIR_TAB_FORWARD:
8424         case GTK_DIR_DOWN:
8425           gtk_widget_grab_focus (widget);
8426           return TRUE;
8427         default:
8428           g_assert_not_reached ();
8429           return FALSE;
8430         }
8431     }
8432
8433   /* Case 2. We don't have focus at all. */
8434   if (!gtk_widget_has_focus (widget))
8435     {
8436       gtk_widget_grab_focus (widget);
8437       return TRUE;
8438     }
8439
8440   /* Case 3. We have focus already. */
8441   if (direction == GTK_DIR_TAB_BACKWARD)
8442     return (gtk_tree_view_header_focus (tree_view, direction, FALSE));
8443   else if (direction == GTK_DIR_TAB_FORWARD)
8444     return FALSE;
8445
8446   /* Other directions caught by the keybindings */
8447   gtk_widget_grab_focus (widget);
8448   return TRUE;
8449 }
8450
8451 static void
8452 gtk_tree_view_grab_focus (GtkWidget *widget)
8453 {
8454   GTK_WIDGET_CLASS (gtk_tree_view_parent_class)->grab_focus (widget);
8455
8456   gtk_tree_view_focus_to_cursor (GTK_TREE_VIEW (widget));
8457 }
8458
8459 static void
8460 gtk_tree_view_style_updated (GtkWidget *widget)
8461 {
8462   GtkTreeView *tree_view = GTK_TREE_VIEW (widget);
8463   GList *list;
8464   GtkTreeViewColumn *column;
8465   GtkStyleContext *style_context;
8466   const GtkBitmask *changes;
8467
8468   GTK_WIDGET_CLASS (gtk_tree_view_parent_class)->style_updated (widget);
8469
8470   if (gtk_widget_get_realized (widget))
8471     {
8472       gtk_tree_view_ensure_background (tree_view);
8473
8474       gtk_tree_view_set_grid_lines (tree_view, tree_view->priv->grid_lines);
8475       gtk_tree_view_set_enable_tree_lines (tree_view, tree_view->priv->tree_lines_enabled);
8476     }
8477
8478   style_context = gtk_widget_get_style_context (widget);
8479   changes = _gtk_style_context_get_changes (style_context);
8480   if (changes == NULL || _gtk_css_style_property_changes_affect_size (changes))
8481     {
8482       for (list = tree_view->priv->columns; list; list = list->next)
8483         {
8484           column = list->data;
8485           _gtk_tree_view_column_cell_set_dirty (column, TRUE);
8486         }
8487
8488       tree_view->priv->fixed_height = -1;
8489       _gtk_rbtree_mark_invalid (tree_view->priv->tree);
8490     }
8491 }
8492
8493
8494 static void
8495 gtk_tree_view_set_focus_child (GtkContainer *container,
8496                                GtkWidget    *child)
8497 {
8498   GtkTreeView *tree_view = GTK_TREE_VIEW (container);
8499   GList *list;
8500
8501   for (list = tree_view->priv->columns; list; list = list->next)
8502     {
8503       if (gtk_tree_view_column_get_button (GTK_TREE_VIEW_COLUMN (list->data)) == child)
8504         {
8505           _gtk_tree_view_set_focus_column (tree_view, GTK_TREE_VIEW_COLUMN (list->data));
8506           break;
8507         }
8508     }
8509
8510   GTK_CONTAINER_CLASS (gtk_tree_view_parent_class)->set_focus_child (container, child);
8511 }
8512
8513 static GtkWidgetPath *
8514 gtk_tree_view_get_path_for_child (GtkContainer *container,
8515                                   GtkWidget    *child)
8516 {
8517   GtkTreeView *tree_view = GTK_TREE_VIEW (container);
8518   GtkWidgetPath *path;
8519   gboolean rtl;
8520   GList *list, *visible_columns = NULL;
8521   gint n_col = 0;
8522
8523   path = GTK_CONTAINER_CLASS (gtk_tree_view_parent_class)->get_path_for_child (container, child);
8524   rtl = (gtk_widget_get_direction (GTK_WIDGET (container)) == GTK_TEXT_DIR_RTL);
8525
8526   for (list = tree_view->priv->columns; list; list = list->next)
8527     {
8528       GtkTreeViewColumn *column = list->data;
8529
8530       if (gtk_tree_view_column_get_visible (column))
8531         visible_columns = g_list_prepend (visible_columns, column);
8532     }
8533
8534   if (!rtl)
8535     visible_columns = g_list_reverse (visible_columns);
8536
8537   for (list = visible_columns; list != NULL; list = list->next)
8538     {
8539       GtkTreeViewColumn *column = list->data;
8540       GtkRegionFlags flags = 0;
8541
8542       n_col++;
8543
8544       if (gtk_tree_view_column_get_widget (column) != child &&
8545           gtk_tree_view_column_get_button (column) != child)
8546         continue;
8547
8548       if ((n_col % 2) == 0)
8549         flags |= GTK_REGION_EVEN;
8550       else
8551         flags |= GTK_REGION_ODD;
8552
8553       if (n_col == 1)
8554         flags |= GTK_REGION_FIRST;
8555
8556       if (!list->next)
8557         flags |= GTK_REGION_LAST;
8558
8559       gtk_widget_path_iter_add_region (path, gtk_widget_path_length (path) - 2, GTK_STYLE_REGION_COLUMN_HEADER, flags);
8560       break;
8561     }
8562   g_list_free (visible_columns);
8563
8564   return path;
8565 }
8566
8567 static gboolean
8568 gtk_tree_view_real_move_cursor (GtkTreeView       *tree_view,
8569                                 GtkMovementStep    step,
8570                                 gint               count)
8571 {
8572   GdkModifierType state;
8573
8574   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), FALSE);
8575   g_return_val_if_fail (step == GTK_MOVEMENT_LOGICAL_POSITIONS ||
8576                         step == GTK_MOVEMENT_VISUAL_POSITIONS ||
8577                         step == GTK_MOVEMENT_DISPLAY_LINES ||
8578                         step == GTK_MOVEMENT_PAGES ||
8579                         step == GTK_MOVEMENT_BUFFER_ENDS, FALSE);
8580
8581   if (tree_view->priv->tree == NULL)
8582     return FALSE;
8583   if (!gtk_widget_has_focus (GTK_WIDGET (tree_view)))
8584     return FALSE;
8585
8586   gtk_tree_view_stop_editing (tree_view, FALSE);
8587   tree_view->priv->draw_keyfocus = TRUE;
8588   gtk_widget_grab_focus (GTK_WIDGET (tree_view));
8589
8590   if (gtk_get_current_event_state (&state))
8591     {
8592       GdkModifierType extend_mod_mask;
8593       GdkModifierType modify_mod_mask;
8594
8595       extend_mod_mask =
8596         gtk_widget_get_modifier_mask (GTK_WIDGET (tree_view),
8597                                       GDK_MODIFIER_INTENT_EXTEND_SELECTION);
8598
8599       modify_mod_mask =
8600         gtk_widget_get_modifier_mask (GTK_WIDGET (tree_view),
8601                                       GDK_MODIFIER_INTENT_MODIFY_SELECTION);
8602
8603       if ((state & modify_mod_mask) == modify_mod_mask)
8604         tree_view->priv->modify_selection_pressed = TRUE;
8605       if ((state & extend_mod_mask) == extend_mod_mask)
8606         tree_view->priv->extend_selection_pressed = TRUE;
8607     }
8608   /* else we assume not pressed */
8609
8610   switch (step)
8611     {
8612       /* currently we make no distinction.  When we go bi-di, we need to */
8613     case GTK_MOVEMENT_LOGICAL_POSITIONS:
8614     case GTK_MOVEMENT_VISUAL_POSITIONS:
8615       gtk_tree_view_move_cursor_left_right (tree_view, count);
8616       break;
8617     case GTK_MOVEMENT_DISPLAY_LINES:
8618       gtk_tree_view_move_cursor_up_down (tree_view, count);
8619       break;
8620     case GTK_MOVEMENT_PAGES:
8621       gtk_tree_view_move_cursor_page_up_down (tree_view, count);
8622       break;
8623     case GTK_MOVEMENT_BUFFER_ENDS:
8624       gtk_tree_view_move_cursor_start_end (tree_view, count);
8625       break;
8626     default:
8627       g_assert_not_reached ();
8628     }
8629
8630   tree_view->priv->modify_selection_pressed = FALSE;
8631   tree_view->priv->extend_selection_pressed = FALSE;
8632
8633   return TRUE;
8634 }
8635
8636 static void
8637 gtk_tree_view_put (GtkTreeView *tree_view,
8638                    GtkWidget   *child_widget,
8639                    /* in bin_window coordinates */
8640                    gint         x,
8641                    gint         y,
8642                    gint         width,
8643                    gint         height)
8644 {
8645   GtkTreeViewChild *child;
8646
8647   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
8648   g_return_if_fail (GTK_IS_WIDGET (child_widget));
8649
8650   child = g_slice_new (GtkTreeViewChild);
8651
8652   child->widget = child_widget;
8653   child->x = x;
8654   child->y = y;
8655   child->width = width;
8656   child->height = height;
8657
8658   tree_view->priv->children = g_list_append (tree_view->priv->children, child);
8659
8660   if (gtk_widget_get_realized (GTK_WIDGET (tree_view)))
8661     gtk_widget_set_parent_window (child->widget, tree_view->priv->bin_window);
8662
8663   gtk_widget_set_parent (child_widget, GTK_WIDGET (tree_view));
8664 }
8665
8666 void
8667 _gtk_tree_view_child_move_resize (GtkTreeView *tree_view,
8668                                   GtkWidget   *widget,
8669                                   /* in tree coordinates */
8670                                   gint         x,
8671                                   gint         y,
8672                                   gint         width,
8673                                   gint         height)
8674 {
8675   GtkTreeViewChild *child = NULL;
8676   GList *list;
8677   GdkRectangle allocation;
8678
8679   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
8680   g_return_if_fail (GTK_IS_WIDGET (widget));
8681
8682   for (list = tree_view->priv->children; list; list = list->next)
8683     {
8684       if (((GtkTreeViewChild *)list->data)->widget == widget)
8685         {
8686           child = list->data;
8687           break;
8688         }
8689     }
8690   if (child == NULL)
8691     return;
8692
8693   allocation.x = child->x = x;
8694   allocation.y = child->y = y;
8695   allocation.width = child->width = width;
8696   allocation.height = child->height = height;
8697
8698   if (gtk_widget_get_realized (widget))
8699     gtk_widget_size_allocate (widget, &allocation);
8700 }
8701
8702
8703 /* TreeModel Callbacks
8704  */
8705
8706 static void
8707 gtk_tree_view_row_changed (GtkTreeModel *model,
8708                            GtkTreePath  *path,
8709                            GtkTreeIter  *iter,
8710                            gpointer      data)
8711 {
8712   GtkTreeView *tree_view = (GtkTreeView *)data;
8713   GtkRBTree *tree;
8714   GtkRBNode *node;
8715   gboolean free_path = FALSE;
8716   GList *list;
8717   GtkTreePath *cursor_path;
8718
8719   g_return_if_fail (path != NULL || iter != NULL);
8720
8721   if (tree_view->priv->cursor_node != NULL)
8722     cursor_path = _gtk_tree_path_new_from_rbtree (tree_view->priv->cursor_tree,
8723                                                   tree_view->priv->cursor_node);
8724   else
8725     cursor_path = NULL;
8726
8727   if (tree_view->priv->edited_column &&
8728       (cursor_path == NULL || gtk_tree_path_compare (cursor_path, path) == 0))
8729     gtk_tree_view_stop_editing (tree_view, TRUE);
8730
8731   if (cursor_path != NULL)
8732     gtk_tree_path_free (cursor_path);
8733
8734   if (path == NULL)
8735     {
8736       path = gtk_tree_model_get_path (model, iter);
8737       free_path = TRUE;
8738     }
8739   else if (iter == NULL)
8740     gtk_tree_model_get_iter (model, iter, path);
8741
8742   if (_gtk_tree_view_find_node (tree_view,
8743                                 path,
8744                                 &tree,
8745                                 &node))
8746     /* We aren't actually showing the node */
8747     goto done;
8748
8749   if (tree == NULL)
8750     goto done;
8751
8752   _gtk_tree_view_accessible_changed (tree_view, tree, node);
8753
8754   if (tree_view->priv->fixed_height_mode
8755       && tree_view->priv->fixed_height >= 0)
8756     {
8757       _gtk_rbtree_node_set_height (tree, node, tree_view->priv->fixed_height);
8758       if (gtk_widget_get_realized (GTK_WIDGET (tree_view)))
8759         gtk_tree_view_node_queue_redraw (tree_view, tree, node);
8760     }
8761   else
8762     {
8763       _gtk_rbtree_node_mark_invalid (tree, node);
8764       for (list = tree_view->priv->columns; list; list = list->next)
8765         {
8766           GtkTreeViewColumn *column;
8767
8768           column = list->data;
8769           if (!gtk_tree_view_column_get_visible (column))
8770             continue;
8771
8772           if (gtk_tree_view_column_get_sizing (column) == GTK_TREE_VIEW_COLUMN_AUTOSIZE)
8773             {
8774               _gtk_tree_view_column_cell_set_dirty (column, TRUE);
8775             }
8776         }
8777     }
8778
8779  done:
8780   if (!tree_view->priv->fixed_height_mode &&
8781       gtk_widget_get_realized (GTK_WIDGET (tree_view)))
8782     install_presize_handler (tree_view);
8783   if (free_path)
8784     gtk_tree_path_free (path);
8785 }
8786
8787 static void
8788 gtk_tree_view_row_inserted (GtkTreeModel *model,
8789                             GtkTreePath  *path,
8790                             GtkTreeIter  *iter,
8791                             gpointer      data)
8792 {
8793   GtkTreeView *tree_view = (GtkTreeView *) data;
8794   gint *indices;
8795   GtkRBTree *tree;
8796   GtkRBNode *tmpnode = NULL;
8797   gint depth;
8798   gint i = 0;
8799   gint height;
8800   gboolean free_path = FALSE;
8801   gboolean node_visible = TRUE;
8802
8803   g_return_if_fail (path != NULL || iter != NULL);
8804
8805   if (tree_view->priv->fixed_height_mode
8806       && tree_view->priv->fixed_height >= 0)
8807     height = tree_view->priv->fixed_height;
8808   else
8809     height = 0;
8810
8811   if (path == NULL)
8812     {
8813       path = gtk_tree_model_get_path (model, iter);
8814       free_path = TRUE;
8815     }
8816   else if (iter == NULL)
8817     gtk_tree_model_get_iter (model, iter, path);
8818
8819   if (tree_view->priv->tree == NULL)
8820     tree_view->priv->tree = _gtk_rbtree_new ();
8821
8822   tree = tree_view->priv->tree;
8823
8824   /* Update all row-references */
8825   gtk_tree_row_reference_inserted (G_OBJECT (data), path);
8826   depth = gtk_tree_path_get_depth (path);
8827   indices = gtk_tree_path_get_indices (path);
8828
8829   /* First, find the parent tree */
8830   while (i < depth - 1)
8831     {
8832       if (tree == NULL)
8833         {
8834           /* We aren't showing the node */
8835           node_visible = FALSE;
8836           goto done;
8837         }
8838
8839       tmpnode = _gtk_rbtree_find_count (tree, indices[i] + 1);
8840       if (tmpnode == NULL)
8841         {
8842           g_warning ("A node was inserted with a parent that's not in the tree.\n" \
8843                      "This possibly means that a GtkTreeModel inserted a child node\n" \
8844                      "before the parent was inserted.");
8845           goto done;
8846         }
8847       else if (!GTK_RBNODE_FLAG_SET (tmpnode, GTK_RBNODE_IS_PARENT))
8848         {
8849           /* FIXME enforce correct behavior on model, probably */
8850           /* In theory, the model should have emitted has_child_toggled here.  We
8851            * try to catch it anyway, just to be safe, in case the model hasn't.
8852            */
8853           GtkTreePath *tmppath = _gtk_tree_path_new_from_rbtree (tree, tmpnode);
8854           gtk_tree_view_row_has_child_toggled (model, tmppath, NULL, data);
8855           gtk_tree_path_free (tmppath);
8856           goto done;
8857         }
8858
8859       tree = tmpnode->children;
8860       i++;
8861     }
8862
8863   if (tree == NULL)
8864     {
8865       node_visible = FALSE;
8866       goto done;
8867     }
8868
8869   /* ref the node */
8870   gtk_tree_model_ref_node (tree_view->priv->model, iter);
8871   if (indices[depth - 1] == 0)
8872     {
8873       tmpnode = _gtk_rbtree_find_count (tree, 1);
8874       tmpnode = _gtk_rbtree_insert_before (tree, tmpnode, height, FALSE);
8875     }
8876   else
8877     {
8878       tmpnode = _gtk_rbtree_find_count (tree, indices[depth - 1]);
8879       tmpnode = _gtk_rbtree_insert_after (tree, tmpnode, height, FALSE);
8880     }
8881
8882   _gtk_tree_view_accessible_add (tree_view, tree, tmpnode);
8883
8884  done:
8885   if (height > 0)
8886     {
8887       if (tree)
8888         _gtk_rbtree_node_mark_valid (tree, tmpnode);
8889
8890       if (node_visible && node_is_visible (tree_view, tree, tmpnode))
8891         gtk_widget_queue_resize (GTK_WIDGET (tree_view));
8892       else
8893         gtk_widget_queue_resize_no_redraw (GTK_WIDGET (tree_view));
8894     }
8895   else
8896     install_presize_handler (tree_view);
8897   if (free_path)
8898     gtk_tree_path_free (path);
8899 }
8900
8901 static void
8902 gtk_tree_view_row_has_child_toggled (GtkTreeModel *model,
8903                                      GtkTreePath  *path,
8904                                      GtkTreeIter  *iter,
8905                                      gpointer      data)
8906 {
8907   GtkTreeView *tree_view = (GtkTreeView *)data;
8908   GtkTreeIter real_iter;
8909   gboolean has_child;
8910   GtkRBTree *tree;
8911   GtkRBNode *node;
8912   gboolean free_path = FALSE;
8913
8914   g_return_if_fail (path != NULL || iter != NULL);
8915
8916   if (iter)
8917     real_iter = *iter;
8918
8919   if (path == NULL)
8920     {
8921       path = gtk_tree_model_get_path (model, iter);
8922       free_path = TRUE;
8923     }
8924   else if (iter == NULL)
8925     gtk_tree_model_get_iter (model, &real_iter, path);
8926
8927   if (_gtk_tree_view_find_node (tree_view,
8928                                 path,
8929                                 &tree,
8930                                 &node))
8931     /* We aren't actually showing the node */
8932     goto done;
8933
8934   if (tree == NULL)
8935     goto done;
8936
8937   has_child = gtk_tree_model_iter_has_child (model, &real_iter);
8938   /* Sanity check.
8939    */
8940   if (GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_PARENT) == has_child)
8941     goto done;
8942
8943   if (has_child)
8944     {
8945       GTK_RBNODE_SET_FLAG (node, GTK_RBNODE_IS_PARENT);
8946       _gtk_tree_view_accessible_add_state (tree_view, tree, node, GTK_CELL_RENDERER_EXPANDABLE);
8947     }
8948   else
8949     {
8950       GTK_RBNODE_UNSET_FLAG (node, GTK_RBNODE_IS_PARENT);
8951       _gtk_tree_view_accessible_remove_state (tree_view, tree, node, GTK_CELL_RENDERER_EXPANDABLE);
8952     }
8953
8954   if (has_child && tree_view->priv->is_list)
8955     {
8956       tree_view->priv->is_list = FALSE;
8957       if (tree_view->priv->show_expanders)
8958         {
8959           GList *list;
8960
8961           for (list = tree_view->priv->columns; list; list = list->next)
8962             if (gtk_tree_view_column_get_visible (GTK_TREE_VIEW_COLUMN (list->data)))
8963               {
8964                 _gtk_tree_view_column_cell_set_dirty (GTK_TREE_VIEW_COLUMN (list->data), TRUE);
8965                 break;
8966               }
8967         }
8968       gtk_widget_queue_resize (GTK_WIDGET (tree_view));
8969     }
8970   else
8971     {
8972       _gtk_tree_view_queue_draw_node (tree_view, tree, node, NULL);
8973     }
8974
8975  done:
8976   if (free_path)
8977     gtk_tree_path_free (path);
8978 }
8979
8980 static void
8981 count_children_helper (GtkRBTree *tree,
8982                        GtkRBNode *node,
8983                        gpointer   data)
8984 {
8985   if (node->children)
8986     _gtk_rbtree_traverse (node->children, node->children->root, G_POST_ORDER, count_children_helper, data);
8987   (*((gint *)data))++;
8988 }
8989
8990 static void
8991 check_selection_helper (GtkRBTree *tree,
8992                         GtkRBNode *node,
8993                         gpointer   data)
8994 {
8995   gint *value = (gint *)data;
8996
8997   *value |= GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_SELECTED);
8998
8999   if (node->children && !*value)
9000     _gtk_rbtree_traverse (node->children, node->children->root, G_POST_ORDER, check_selection_helper, data);
9001 }
9002
9003 static void
9004 gtk_tree_view_row_deleted (GtkTreeModel *model,
9005                            GtkTreePath  *path,
9006                            gpointer      data)
9007 {
9008   GtkTreeView *tree_view = (GtkTreeView *)data;
9009   GtkRBTree *tree;
9010   GtkRBNode *node;
9011   GList *list;
9012   gboolean selection_changed = FALSE, cursor_changed = FALSE;
9013   GtkRBTree *cursor_tree = NULL;
9014   GtkRBNode *cursor_node = NULL;
9015
9016   g_return_if_fail (path != NULL);
9017
9018   gtk_tree_row_reference_deleted (G_OBJECT (data), path);
9019
9020   if (_gtk_tree_view_find_node (tree_view, path, &tree, &node))
9021     return;
9022
9023   if (tree == NULL)
9024     return;
9025
9026   /* check if the selection has been changed */
9027   _gtk_rbtree_traverse (tree, node, G_POST_ORDER,
9028                         check_selection_helper, &selection_changed);
9029
9030   for (list = tree_view->priv->columns; list; list = list->next)
9031     if (gtk_tree_view_column_get_visible (GTK_TREE_VIEW_COLUMN (list->data)) &&
9032         gtk_tree_view_column_get_sizing (GTK_TREE_VIEW_COLUMN (list->data)) == GTK_TREE_VIEW_COLUMN_AUTOSIZE)
9033       _gtk_tree_view_column_cell_set_dirty ((GtkTreeViewColumn *)list->data, TRUE);
9034
9035   /* Ensure we don't have a dangling pointer to a dead node */
9036   ensure_unprelighted (tree_view);
9037
9038   /* Cancel editting if we've started */
9039   gtk_tree_view_stop_editing (tree_view, TRUE);
9040
9041   /* If the cursor row got deleted, move the cursor to the next row */
9042   if (tree_view->priv->cursor_node &&
9043       (tree_view->priv->cursor_node == node ||
9044        (node->children && (tree_view->priv->cursor_tree == node->children ||
9045                            _gtk_rbtree_contains (node->children, tree_view->priv->cursor_tree)))))
9046     {
9047       GtkTreePath *cursor_path;
9048
9049       cursor_tree = tree;
9050       cursor_node = _gtk_rbtree_next (tree, node);
9051       /* find the first node that is not going to be deleted */
9052       while (cursor_node == NULL && cursor_tree->parent_tree)
9053         {
9054           cursor_node = _gtk_rbtree_next (cursor_tree->parent_tree,
9055                                           cursor_tree->parent_node);
9056           cursor_tree = cursor_tree->parent_tree;
9057         }
9058
9059       if (cursor_node != NULL)
9060         cursor_path = _gtk_tree_path_new_from_rbtree (cursor_tree, cursor_node);
9061       else
9062         cursor_path = NULL;
9063
9064       if (cursor_path == NULL ||
9065           ! search_first_focusable_path (tree_view, &cursor_path, TRUE,
9066                                          &cursor_tree, &cursor_node))
9067         {
9068           /* It looks like we reached the end of the view without finding
9069            * a focusable row.  We will step backwards to find the last
9070            * focusable row.
9071            */
9072           _gtk_rbtree_prev_full (tree, node, &cursor_tree, &cursor_node);
9073           if (cursor_node)
9074             {
9075               cursor_path = _gtk_tree_path_new_from_rbtree (cursor_tree, cursor_node);
9076               if (! search_first_focusable_path (tree_view, &cursor_path, FALSE,
9077                                                  &cursor_tree, &cursor_node))
9078                 cursor_node = NULL;
9079               gtk_tree_path_free (cursor_path);
9080             }
9081         }
9082       else if (cursor_path)
9083         gtk_tree_path_free (cursor_path);
9084
9085       cursor_changed = TRUE;
9086     }
9087
9088   if (tree_view->priv->destroy_count_func)
9089     {
9090       gint child_count = 0;
9091       if (node->children)
9092         _gtk_rbtree_traverse (node->children, node->children->root, G_POST_ORDER, count_children_helper, &child_count);
9093       tree_view->priv->destroy_count_func (tree_view, path, child_count, tree_view->priv->destroy_count_data);
9094     }
9095
9096   if (tree->root->count == 1)
9097     {
9098       if (tree_view->priv->tree == tree)
9099         tree_view->priv->tree = NULL;
9100
9101       _gtk_tree_view_accessible_remove_state (tree_view,
9102                                               tree->parent_tree, tree->parent_node,
9103                                               GTK_CELL_RENDERER_EXPANDED);
9104       _gtk_tree_view_accessible_remove (tree_view, tree, NULL);
9105       _gtk_rbtree_remove (tree);
9106     }
9107   else
9108     {
9109       _gtk_tree_view_accessible_remove (tree_view, tree, node);
9110       _gtk_rbtree_remove_node (tree, node);
9111     }
9112
9113   if (! gtk_tree_row_reference_valid (tree_view->priv->top_row))
9114     {
9115       gtk_tree_row_reference_free (tree_view->priv->top_row);
9116       tree_view->priv->top_row = NULL;
9117     }
9118
9119   install_scroll_sync_handler (tree_view);
9120
9121   gtk_widget_queue_resize (GTK_WIDGET (tree_view));
9122
9123   if (cursor_changed)
9124     {
9125       if (cursor_node)
9126         {
9127           GtkTreePath *cursor_path = _gtk_tree_path_new_from_rbtree (cursor_tree, cursor_node);
9128           gtk_tree_view_real_set_cursor (tree_view, cursor_path, CLEAR_AND_SELECT | CURSOR_INVALID);
9129           gtk_tree_path_free (cursor_path);
9130         }
9131       else
9132         gtk_tree_view_real_set_cursor (tree_view, NULL, CLEAR_AND_SELECT | CURSOR_INVALID);
9133     }
9134   if (selection_changed)
9135     g_signal_emit_by_name (tree_view->priv->selection, "changed");
9136 }
9137
9138 static void
9139 gtk_tree_view_rows_reordered (GtkTreeModel *model,
9140                               GtkTreePath  *parent,
9141                               GtkTreeIter  *iter,
9142                               gint         *new_order,
9143                               gpointer      data)
9144 {
9145   GtkTreeView *tree_view = GTK_TREE_VIEW (data);
9146   GtkRBTree *tree;
9147   GtkRBNode *node;
9148   gint len;
9149
9150   len = gtk_tree_model_iter_n_children (model, iter);
9151
9152   if (len < 2)
9153     return;
9154
9155   gtk_tree_row_reference_reordered (G_OBJECT (data),
9156                                     parent,
9157                                     iter,
9158                                     new_order);
9159
9160   if (_gtk_tree_view_find_node (tree_view,
9161                                 parent,
9162                                 &tree,
9163                                 &node))
9164     return;
9165
9166   /* We need to special case the parent path */
9167   if (tree == NULL)
9168     tree = tree_view->priv->tree;
9169   else
9170     tree = node->children;
9171
9172   if (tree == NULL)
9173     return;
9174
9175   if (tree_view->priv->edited_column)
9176     gtk_tree_view_stop_editing (tree_view, TRUE);
9177
9178   /* we need to be unprelighted */
9179   ensure_unprelighted (tree_view);
9180
9181   _gtk_rbtree_reorder (tree, new_order, len);
9182
9183   _gtk_tree_view_accessible_reorder (tree_view);
9184
9185   gtk_widget_queue_draw (GTK_WIDGET (tree_view));
9186
9187   gtk_tree_view_dy_to_top_row (tree_view);
9188 }
9189
9190
9191 /* Internal tree functions
9192  */
9193
9194
9195 static void
9196 gtk_tree_view_get_background_xrange (GtkTreeView       *tree_view,
9197                                      GtkRBTree         *tree,
9198                                      GtkTreeViewColumn *column,
9199                                      gint              *x1,
9200                                      gint              *x2)
9201 {
9202   GtkTreeViewColumn *tmp_column = NULL;
9203   gint total_width;
9204   GList *list;
9205   gboolean rtl;
9206
9207   if (x1)
9208     *x1 = 0;
9209
9210   if (x2)
9211     *x2 = 0;
9212
9213   rtl = (gtk_widget_get_direction (GTK_WIDGET (tree_view)) == GTK_TEXT_DIR_RTL);
9214
9215   total_width = 0;
9216   for (list = (rtl ? g_list_last (tree_view->priv->columns) : g_list_first (tree_view->priv->columns));
9217        list;
9218        list = (rtl ? list->prev : list->next))
9219     {
9220       tmp_column = list->data;
9221
9222       if (tmp_column == column)
9223         break;
9224
9225       if (gtk_tree_view_column_get_visible (tmp_column))
9226         total_width += gtk_tree_view_column_get_width (tmp_column);
9227     }
9228
9229   if (tmp_column != column)
9230     {
9231       g_warning (G_STRLOC": passed-in column isn't in the tree");
9232       return;
9233     }
9234
9235   if (x1)
9236     *x1 = total_width;
9237
9238   if (x2)
9239     {
9240       if (gtk_tree_view_column_get_visible (column))
9241         *x2 = total_width + gtk_tree_view_column_get_width (column);
9242       else
9243         *x2 = total_width; /* width of 0 */
9244     }
9245 }
9246
9247 static void
9248 gtk_tree_view_get_arrow_xrange (GtkTreeView *tree_view,
9249                                 GtkRBTree   *tree,
9250                                 gint        *x1,
9251                                 gint        *x2)
9252 {
9253   gint x_offset = 0;
9254   GList *list;
9255   GtkTreeViewColumn *tmp_column = NULL;
9256   gint total_width;
9257   gint expander_size;
9258   gboolean indent_expanders;
9259   gboolean rtl;
9260
9261   rtl = (gtk_widget_get_direction (GTK_WIDGET (tree_view)) == GTK_TEXT_DIR_RTL);
9262   expander_size = gtk_tree_view_get_expander_size (tree_view);
9263
9264   total_width = 0;
9265   for (list = (rtl ? g_list_last (tree_view->priv->columns) : g_list_first (tree_view->priv->columns));
9266        list;
9267        list = (rtl ? list->prev : list->next))
9268     {
9269       tmp_column = list->data;
9270
9271       if (gtk_tree_view_is_expander_column (tree_view, tmp_column))
9272         {
9273           if (rtl)
9274             x_offset = total_width + gtk_tree_view_column_get_width (tmp_column) - expander_size;
9275           else
9276             x_offset = total_width;
9277           break;
9278         }
9279
9280       if (gtk_tree_view_column_get_visible (tmp_column))
9281         total_width += gtk_tree_view_column_get_width (tmp_column);
9282     }
9283
9284   gtk_widget_style_get (GTK_WIDGET (tree_view),
9285                         "indent-expanders", &indent_expanders,
9286                         NULL);
9287
9288   if (indent_expanders)
9289     {
9290       if (rtl)
9291         x_offset -= expander_size * _gtk_rbtree_get_depth (tree);
9292       else
9293         x_offset += expander_size * _gtk_rbtree_get_depth (tree);
9294     }
9295
9296   *x1 = x_offset;
9297
9298   if (tmp_column &&
9299       gtk_tree_view_column_get_visible (tmp_column))
9300     /* +1 because x2 isn't included in the range. */
9301     *x2 = *x1 + expander_size + 1;
9302   else
9303     *x2 = *x1;
9304 }
9305
9306 static void
9307 gtk_tree_view_build_tree (GtkTreeView *tree_view,
9308                           GtkRBTree   *tree,
9309                           GtkTreeIter *iter,
9310                           gint         depth,
9311                           gboolean     recurse)
9312 {
9313   GtkRBNode *temp = NULL;
9314   GtkTreePath *path = NULL;
9315
9316   do
9317     {
9318       gtk_tree_model_ref_node (tree_view->priv->model, iter);
9319       temp = _gtk_rbtree_insert_after (tree, temp, 0, FALSE);
9320
9321       if (tree_view->priv->fixed_height > 0)
9322         {
9323           if (GTK_RBNODE_FLAG_SET (temp, GTK_RBNODE_INVALID))
9324             {
9325               _gtk_rbtree_node_set_height (tree, temp, tree_view->priv->fixed_height);
9326               _gtk_rbtree_node_mark_valid (tree, temp);
9327             }
9328         }
9329
9330       if (tree_view->priv->is_list)
9331         continue;
9332
9333       if (recurse)
9334         {
9335           GtkTreeIter child;
9336
9337           if (!path)
9338             path = gtk_tree_model_get_path (tree_view->priv->model, iter);
9339           else
9340             gtk_tree_path_next (path);
9341
9342           if (gtk_tree_model_iter_children (tree_view->priv->model, &child, iter))
9343             {
9344               gboolean expand;
9345
9346               g_signal_emit (tree_view, tree_view_signals[TEST_EXPAND_ROW], 0, iter, path, &expand);
9347
9348               if (gtk_tree_model_iter_has_child (tree_view->priv->model, iter)
9349                   && !expand)
9350                 {
9351                   temp->children = _gtk_rbtree_new ();
9352                   temp->children->parent_tree = tree;
9353                   temp->children->parent_node = temp;
9354                   gtk_tree_view_build_tree (tree_view, temp->children, &child, depth + 1, recurse);
9355                 }
9356             }
9357         }
9358
9359       if (gtk_tree_model_iter_has_child (tree_view->priv->model, iter))
9360         {
9361           if ((temp->flags&GTK_RBNODE_IS_PARENT) != GTK_RBNODE_IS_PARENT)
9362             temp->flags ^= GTK_RBNODE_IS_PARENT;
9363         }
9364     }
9365   while (gtk_tree_model_iter_next (tree_view->priv->model, iter));
9366
9367   if (path)
9368     gtk_tree_path_free (path);
9369 }
9370
9371 /* Make sure the node is visible vertically */
9372 static void
9373 gtk_tree_view_clamp_node_visible (GtkTreeView *tree_view,
9374                                   GtkRBTree   *tree,
9375                                   GtkRBNode   *node)
9376 {
9377   gint node_dy, height;
9378   GtkTreePath *path = NULL;
9379
9380   if (!gtk_widget_get_realized (GTK_WIDGET (tree_view)))
9381     return;
9382
9383   /* just return if the node is visible, avoiding a costly expose */
9384   node_dy = _gtk_rbtree_node_find_offset (tree, node);
9385   height = gtk_tree_view_get_row_height (tree_view, node);
9386   if (! GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_INVALID)
9387       && node_dy >= gtk_adjustment_get_value (tree_view->priv->vadjustment)
9388       && node_dy + height <= (gtk_adjustment_get_value (tree_view->priv->vadjustment)
9389                               + gtk_adjustment_get_page_size (tree_view->priv->vadjustment)))
9390     return;
9391
9392   path = _gtk_tree_path_new_from_rbtree (tree, node);
9393   if (path)
9394     {
9395       gtk_tree_view_scroll_to_cell (tree_view, path, NULL, FALSE, 0.0, 0.0);
9396       gtk_tree_path_free (path);
9397     }
9398 }
9399
9400 static void
9401 gtk_tree_view_clamp_column_visible (GtkTreeView       *tree_view,
9402                                     GtkTreeViewColumn *column,
9403                                     gboolean           focus_to_cell)
9404 {
9405   GtkAllocation allocation;
9406   gint x, width;
9407
9408   if (column == NULL)
9409     return;
9410
9411   gtk_widget_get_allocation (gtk_tree_view_column_get_button (column), &allocation);
9412   x = allocation.x;
9413   width = allocation.width;
9414
9415   if (width > gtk_adjustment_get_page_size (tree_view->priv->hadjustment))
9416     {
9417       /* The column is larger than the horizontal page size.  If the
9418        * column has cells which can be focussed individually, then we make
9419        * sure the cell which gets focus is fully visible (if even the
9420        * focus cell is bigger than the page size, we make sure the
9421        * left-hand side of the cell is visible).
9422        *
9423        * If the column does not have an activatable cell, we
9424        * make sure the left-hand side of the column is visible.
9425        */
9426
9427       if (focus_to_cell && gtk_tree_view_has_can_focus_cell (tree_view))
9428         {
9429           GtkCellArea *cell_area;
9430           GtkCellRenderer *focus_cell;
9431
9432           cell_area = gtk_cell_layout_get_area (GTK_CELL_LAYOUT (column));
9433           focus_cell = gtk_cell_area_get_focus_cell (cell_area);
9434
9435           if (gtk_tree_view_column_cell_get_position (column, focus_cell,
9436                                                       &x, &width))
9437             {
9438               if (width < gtk_adjustment_get_page_size (tree_view->priv->hadjustment))
9439                 {
9440                   if (gtk_adjustment_get_value (tree_view->priv->hadjustment) + gtk_adjustment_get_page_size (tree_view->priv->hadjustment) < x + width)
9441                     gtk_adjustment_set_value (tree_view->priv->hadjustment,
9442                                               x + width - gtk_adjustment_get_page_size (tree_view->priv->hadjustment));
9443                   else if (gtk_adjustment_get_value (tree_view->priv->hadjustment) > x)
9444                     gtk_adjustment_set_value (tree_view->priv->hadjustment, x);
9445                 }
9446             }
9447         }
9448
9449       gtk_adjustment_set_value (tree_view->priv->hadjustment, x);
9450     }
9451   else
9452     {
9453       if ((gtk_adjustment_get_value (tree_view->priv->hadjustment) + gtk_adjustment_get_page_size (tree_view->priv->hadjustment)) < (x + width))
9454           gtk_adjustment_set_value (tree_view->priv->hadjustment,
9455                                     x + width - gtk_adjustment_get_page_size (tree_view->priv->hadjustment));
9456       else if (gtk_adjustment_get_value (tree_view->priv->hadjustment) > x)
9457         gtk_adjustment_set_value (tree_view->priv->hadjustment, x);
9458   }
9459 }
9460
9461 /* This function could be more efficient.  I'll optimize it if profiling seems
9462  * to imply that it is important */
9463 GtkTreePath *
9464 _gtk_tree_path_new_from_rbtree (GtkRBTree   *tree,
9465                                 GtkRBNode   *node)
9466 {
9467   GtkTreePath *path;
9468   GtkRBTree *tmp_tree;
9469   GtkRBNode *tmp_node, *last;
9470   gint count;
9471
9472   path = gtk_tree_path_new ();
9473
9474   g_return_val_if_fail (node != NULL, path);
9475
9476   count = 1 + node->left->count;
9477
9478   last = node;
9479   tmp_node = node->parent;
9480   tmp_tree = tree;
9481   while (tmp_tree)
9482     {
9483       while (!_gtk_rbtree_is_nil (tmp_node))
9484         {
9485           if (tmp_node->right == last)
9486             count += 1 + tmp_node->left->count;
9487           last = tmp_node;
9488           tmp_node = tmp_node->parent;
9489         }
9490       gtk_tree_path_prepend_index (path, count - 1);
9491       last = tmp_tree->parent_node;
9492       tmp_tree = tmp_tree->parent_tree;
9493       if (last)
9494         {
9495           count = 1 + last->left->count;
9496           tmp_node = last->parent;
9497         }
9498     }
9499   return path;
9500 }
9501
9502 /* Returns TRUE if we ran out of tree before finding the path.  If the path is
9503  * invalid (ie. points to a node that's not in the tree), *tree and *node are
9504  * both set to NULL.
9505  */
9506 gboolean
9507 _gtk_tree_view_find_node (GtkTreeView  *tree_view,
9508                           GtkTreePath  *path,
9509                           GtkRBTree   **tree,
9510                           GtkRBNode   **node)
9511 {
9512   GtkRBNode *tmpnode = NULL;
9513   GtkRBTree *tmptree = tree_view->priv->tree;
9514   gint *indices = gtk_tree_path_get_indices (path);
9515   gint depth = gtk_tree_path_get_depth (path);
9516   gint i = 0;
9517
9518   *node = NULL;
9519   *tree = NULL;
9520
9521   if (depth == 0 || tmptree == NULL)
9522     return FALSE;
9523   do
9524     {
9525       tmpnode = _gtk_rbtree_find_count (tmptree, indices[i] + 1);
9526       ++i;
9527       if (tmpnode == NULL)
9528         {
9529           *tree = NULL;
9530           *node = NULL;
9531           return FALSE;
9532         }
9533       if (i >= depth)
9534         {
9535           *tree = tmptree;
9536           *node = tmpnode;
9537           return FALSE;
9538         }
9539       *tree = tmptree;
9540       *node = tmpnode;
9541       tmptree = tmpnode->children;
9542       if (tmptree == NULL)
9543         return TRUE;
9544     }
9545   while (1);
9546 }
9547
9548 static gboolean
9549 gtk_tree_view_is_expander_column (GtkTreeView       *tree_view,
9550                                   GtkTreeViewColumn *column)
9551 {
9552   GList *list;
9553
9554   if (tree_view->priv->is_list)
9555     return FALSE;
9556
9557   if (tree_view->priv->expander_column != NULL)
9558     {
9559       if (tree_view->priv->expander_column == column)
9560         return TRUE;
9561       return FALSE;
9562     }
9563   else
9564     {
9565       for (list = tree_view->priv->columns;
9566            list;
9567            list = list->next)
9568         if (gtk_tree_view_column_get_visible (GTK_TREE_VIEW_COLUMN (list->data)))
9569           break;
9570       if (list && list->data == column)
9571         return TRUE;
9572     }
9573   return FALSE;
9574 }
9575
9576 static inline gboolean
9577 gtk_tree_view_draw_expanders (GtkTreeView *tree_view)
9578 {
9579   if (!tree_view->priv->is_list && tree_view->priv->show_expanders)
9580     return TRUE;
9581   /* else */
9582   return FALSE;
9583 }
9584
9585 static void
9586 gtk_tree_view_add_move_binding (GtkBindingSet  *binding_set,
9587                                 guint           keyval,
9588                                 guint           modmask,
9589                                 gboolean        add_shifted_binding,
9590                                 GtkMovementStep step,
9591                                 gint            count)
9592 {
9593
9594   gtk_binding_entry_add_signal (binding_set, keyval, modmask,
9595                                 "move-cursor", 2,
9596                                 G_TYPE_ENUM, step,
9597                                 G_TYPE_INT, count);
9598
9599   if (add_shifted_binding)
9600     gtk_binding_entry_add_signal (binding_set, keyval, GDK_SHIFT_MASK,
9601                                   "move-cursor", 2,
9602                                   G_TYPE_ENUM, step,
9603                                   G_TYPE_INT, count);
9604
9605   if ((modmask & GDK_CONTROL_MASK) == GDK_CONTROL_MASK)
9606    return;
9607
9608   gtk_binding_entry_add_signal (binding_set, keyval, GDK_CONTROL_MASK | GDK_SHIFT_MASK,
9609                                 "move-cursor", 2,
9610                                 G_TYPE_ENUM, step,
9611                                 G_TYPE_INT, count);
9612
9613   gtk_binding_entry_add_signal (binding_set, keyval, GDK_CONTROL_MASK,
9614                                 "move-cursor", 2,
9615                                 G_TYPE_ENUM, step,
9616                                 G_TYPE_INT, count);
9617 }
9618
9619 static gint
9620 gtk_tree_view_unref_tree_helper (GtkTreeModel *model,
9621                                  GtkTreeIter  *iter,
9622                                  GtkRBTree    *tree,
9623                                  GtkRBNode    *node)
9624 {
9625   gint retval = FALSE;
9626   do
9627     {
9628       g_return_val_if_fail (node != NULL, FALSE);
9629
9630       if (node->children)
9631         {
9632           GtkTreeIter child;
9633           GtkRBTree *new_tree;
9634           GtkRBNode *new_node;
9635
9636           new_tree = node->children;
9637           new_node = _gtk_rbtree_first (new_tree);
9638
9639           if (!gtk_tree_model_iter_children (model, &child, iter))
9640             return FALSE;
9641
9642           retval = gtk_tree_view_unref_tree_helper (model, &child, new_tree, new_node) | retval;
9643         }
9644
9645       if (GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_SELECTED))
9646         retval = TRUE;
9647       gtk_tree_model_unref_node (model, iter);
9648       node = _gtk_rbtree_next (tree, node);
9649     }
9650   while (gtk_tree_model_iter_next (model, iter));
9651
9652   return retval;
9653 }
9654
9655 static gint
9656 gtk_tree_view_unref_and_check_selection_tree (GtkTreeView *tree_view,
9657                                               GtkRBTree   *tree)
9658 {
9659   GtkTreeIter iter;
9660   GtkTreePath *path;
9661   GtkRBNode *node;
9662   gint retval;
9663
9664   if (!tree)
9665     return FALSE;
9666
9667   node = _gtk_rbtree_first (tree);
9668
9669   g_return_val_if_fail (node != NULL, FALSE);
9670   path = _gtk_tree_path_new_from_rbtree (tree, node);
9671   gtk_tree_model_get_iter (GTK_TREE_MODEL (tree_view->priv->model),
9672                            &iter, path);
9673   retval = gtk_tree_view_unref_tree_helper (GTK_TREE_MODEL (tree_view->priv->model), &iter, tree, node);
9674   gtk_tree_path_free (path);
9675
9676   return retval;
9677 }
9678
9679 static void
9680 gtk_tree_view_set_column_drag_info (GtkTreeView       *tree_view,
9681                                     GtkTreeViewColumn *column)
9682 {
9683   GtkTreeViewColumn *left_column;
9684   GtkTreeViewColumn *cur_column = NULL;
9685   GtkTreeViewColumnReorder *reorder;
9686   gboolean rtl;
9687   GList *tmp_list;
9688   gint left;
9689
9690   /* We want to precalculate the motion list such that we know what column slots
9691    * are available.
9692    */
9693   left_column = NULL;
9694   rtl = (gtk_widget_get_direction (GTK_WIDGET (tree_view)) == GTK_TEXT_DIR_RTL);
9695
9696   /* First, identify all possible drop spots */
9697   if (rtl)
9698     tmp_list = g_list_last (tree_view->priv->columns);
9699   else
9700     tmp_list = g_list_first (tree_view->priv->columns);
9701
9702   while (tmp_list)
9703     {
9704       cur_column = GTK_TREE_VIEW_COLUMN (tmp_list->data);
9705       tmp_list = rtl?g_list_previous (tmp_list):g_list_next (tmp_list);
9706
9707       if (gtk_tree_view_column_get_visible (cur_column) == FALSE)
9708         continue;
9709
9710       /* If it's not the column moving and func tells us to skip over the column, we continue. */
9711       if (left_column != column && cur_column != column &&
9712           tree_view->priv->column_drop_func &&
9713           ! tree_view->priv->column_drop_func (tree_view, column, left_column, cur_column, tree_view->priv->column_drop_func_data))
9714         {
9715           left_column = cur_column;
9716           continue;
9717         }
9718       reorder = g_slice_new0 (GtkTreeViewColumnReorder);
9719       reorder->left_column = left_column;
9720       left_column = reorder->right_column = cur_column;
9721
9722       tree_view->priv->column_drag_info = g_list_append (tree_view->priv->column_drag_info, reorder);
9723     }
9724
9725   /* Add the last one */
9726   if (tree_view->priv->column_drop_func == NULL ||
9727       ((left_column != column) &&
9728        tree_view->priv->column_drop_func (tree_view, column, left_column, NULL, tree_view->priv->column_drop_func_data)))
9729     {
9730       reorder = g_slice_new0 (GtkTreeViewColumnReorder);
9731       reorder->left_column = left_column;
9732       reorder->right_column = NULL;
9733       tree_view->priv->column_drag_info = g_list_append (tree_view->priv->column_drag_info, reorder);
9734     }
9735
9736   /* We quickly check to see if it even makes sense to reorder columns. */
9737   /* If there is nothing that can be moved, then we return */
9738
9739   if (tree_view->priv->column_drag_info == NULL)
9740     return;
9741
9742   /* We know there are always 2 slots possbile, as you can always return column. */
9743   /* If that's all there is, return */
9744   if (tree_view->priv->column_drag_info->next == NULL ||
9745       (tree_view->priv->column_drag_info->next->next == NULL &&
9746        ((GtkTreeViewColumnReorder *)tree_view->priv->column_drag_info->data)->right_column == column &&
9747        ((GtkTreeViewColumnReorder *)tree_view->priv->column_drag_info->next->data)->left_column == column))
9748     {
9749       for (tmp_list = tree_view->priv->column_drag_info; tmp_list; tmp_list = tmp_list->next)
9750         g_slice_free (GtkTreeViewColumnReorder, tmp_list->data);
9751       g_list_free (tree_view->priv->column_drag_info);
9752       tree_view->priv->column_drag_info = NULL;
9753       return;
9754     }
9755   /* We fill in the ranges for the columns, now that we've isolated them */
9756   left = - TREE_VIEW_COLUMN_DRAG_DEAD_MULTIPLIER (tree_view);
9757
9758   for (tmp_list = tree_view->priv->column_drag_info; tmp_list; tmp_list = tmp_list->next)
9759     {
9760       reorder = (GtkTreeViewColumnReorder *) tmp_list->data;
9761
9762       reorder->left_align = left;
9763       if (tmp_list->next != NULL)
9764         {
9765           GtkAllocation right_allocation, left_allocation;
9766           GtkWidget    *left_button, *right_button;
9767
9768           g_assert (tmp_list->next->data);
9769
9770           right_button = gtk_tree_view_column_get_button (reorder->right_column);
9771           left_button  = gtk_tree_view_column_get_button
9772             (((GtkTreeViewColumnReorder *)tmp_list->next->data)->left_column);
9773
9774           gtk_widget_get_allocation (right_button, &right_allocation);
9775           gtk_widget_get_allocation (left_button, &left_allocation);
9776           left = reorder->right_align = (right_allocation.x + right_allocation.width + left_allocation.x) / 2;
9777         }
9778       else
9779         {
9780           reorder->right_align = gdk_window_get_width (tree_view->priv->header_window)
9781                                  + TREE_VIEW_COLUMN_DRAG_DEAD_MULTIPLIER (tree_view);
9782         }
9783     }
9784 }
9785
9786 void
9787 _gtk_tree_view_column_start_drag (GtkTreeView       *tree_view,
9788                                   GtkTreeViewColumn *column,
9789                                   GdkDevice         *device)
9790 {
9791   GdkEvent *send_event;
9792   GtkAllocation allocation;
9793   GtkAllocation button_allocation;
9794   GdkScreen *screen = gtk_widget_get_screen (GTK_WIDGET (tree_view));
9795   GtkWidget *button;
9796   GdkDevice *pointer, *keyboard;
9797   GdkWindowAttr attributes;
9798   guint attributes_mask;
9799   GtkStyleContext *context;
9800
9801   g_return_if_fail (tree_view->priv->column_drag_info == NULL);
9802   g_return_if_fail (tree_view->priv->cur_reorder == NULL);
9803   g_return_if_fail (tree_view->priv->drag_window == NULL);
9804
9805   gtk_tree_view_set_column_drag_info (tree_view, column);
9806
9807   if (tree_view->priv->column_drag_info == NULL)
9808     return;
9809
9810   button = gtk_tree_view_column_get_button (column);
9811
9812   context = gtk_widget_get_style_context (button);
9813   gtk_style_context_add_class (context, GTK_STYLE_CLASS_DND);
9814
9815   gtk_widget_get_allocation (button, &button_allocation);
9816
9817   attributes.window_type = GDK_WINDOW_CHILD;
9818   attributes.wclass = GDK_INPUT_OUTPUT;
9819   attributes.x = button_allocation.x;
9820   attributes.y = 0;
9821   attributes.width = button_allocation.width;
9822   attributes.height = button_allocation.height;
9823   attributes.visual = gtk_widget_get_visual (GTK_WIDGET (tree_view));
9824   attributes.event_mask = GDK_VISIBILITY_NOTIFY_MASK | GDK_EXPOSURE_MASK | GDK_POINTER_MOTION_MASK;
9825   attributes_mask = GDK_WA_X | GDK_WA_Y | GDK_WA_VISUAL;
9826
9827   tree_view->priv->drag_window = gdk_window_new (tree_view->priv->header_window,
9828                                                  &attributes,
9829                                                  attributes_mask);
9830   gdk_window_set_user_data (tree_view->priv->drag_window, GTK_WIDGET (tree_view));
9831
9832   if (gdk_device_get_source (device) == GDK_SOURCE_KEYBOARD)
9833     {
9834       keyboard = device;
9835       pointer = gdk_device_get_associated_device (device);
9836     }
9837   else
9838     {
9839       pointer = device;
9840       keyboard = gdk_device_get_associated_device (device);
9841     }
9842
9843   gdk_device_ungrab (pointer, GDK_CURRENT_TIME);
9844   gdk_device_ungrab (keyboard, GDK_CURRENT_TIME);
9845
9846   gtk_grab_remove (button);
9847
9848   send_event = gdk_event_new (GDK_LEAVE_NOTIFY);
9849   send_event->crossing.send_event = TRUE;
9850   send_event->crossing.window = g_object_ref (gtk_button_get_event_window (GTK_BUTTON (button)));
9851   send_event->crossing.subwindow = NULL;
9852   send_event->crossing.detail = GDK_NOTIFY_ANCESTOR;
9853   send_event->crossing.time = GDK_CURRENT_TIME;
9854   gdk_event_set_device (send_event, device);
9855
9856   gtk_propagate_event (button, send_event);
9857   gdk_event_free (send_event);
9858
9859   send_event = gdk_event_new (GDK_BUTTON_RELEASE);
9860   send_event->button.window = g_object_ref (gdk_screen_get_root_window (screen));
9861   send_event->button.send_event = TRUE;
9862   send_event->button.time = GDK_CURRENT_TIME;
9863   send_event->button.x = -1;
9864   send_event->button.y = -1;
9865   send_event->button.axes = NULL;
9866   send_event->button.state = 0;
9867   send_event->button.button = GDK_BUTTON_PRIMARY;
9868   send_event->button.x_root = 0;
9869   send_event->button.y_root = 0;
9870   gdk_event_set_device (send_event, device);
9871
9872   gtk_propagate_event (button, send_event);
9873   gdk_event_free (send_event);
9874
9875   /* Kids, don't try this at home */
9876   g_object_ref (button);
9877   gtk_container_remove (GTK_CONTAINER (tree_view), button);
9878   gtk_widget_set_parent_window (button, tree_view->priv->drag_window);
9879   gtk_widget_set_parent (button, GTK_WIDGET (tree_view));
9880   g_object_unref (button);
9881
9882   gtk_widget_get_allocation (button, &button_allocation);
9883   tree_view->priv->drag_column_x = button_allocation.x;
9884   allocation = button_allocation;
9885   allocation.x = 0;
9886   gtk_widget_size_allocate (button, &allocation);
9887   gtk_widget_set_parent_window (button, tree_view->priv->drag_window);
9888
9889   tree_view->priv->drag_column = column;
9890   gdk_window_show (tree_view->priv->drag_window);
9891
9892   gtk_widget_grab_focus (GTK_WIDGET (tree_view));
9893   while (gtk_events_pending ())
9894     gtk_main_iteration ();
9895
9896   tree_view->priv->in_column_drag = TRUE;
9897
9898   gdk_device_grab (pointer,
9899                    tree_view->priv->drag_window,
9900                    GDK_OWNERSHIP_NONE,
9901                    FALSE,
9902                    GDK_POINTER_MOTION_MASK|GDK_BUTTON_RELEASE_MASK,
9903                    NULL,
9904                    GDK_CURRENT_TIME);
9905   gdk_device_grab (keyboard,
9906                    tree_view->priv->drag_window,
9907                    GDK_OWNERSHIP_NONE,
9908                    FALSE,
9909                    GDK_KEY_PRESS_MASK|GDK_KEY_RELEASE_MASK,
9910                    NULL,
9911                    GDK_CURRENT_TIME);
9912 }
9913
9914 static void
9915 gtk_tree_view_queue_draw_arrow (GtkTreeView        *tree_view,
9916                                 GtkRBTree          *tree,
9917                                 GtkRBNode          *node)
9918 {
9919   GtkAllocation allocation;
9920   GdkRectangle rect;
9921
9922   if (!gtk_widget_get_realized (GTK_WIDGET (tree_view)))
9923     return;
9924
9925   gtk_widget_get_allocation (GTK_WIDGET (tree_view), &allocation);
9926   rect.x = 0;
9927   rect.width = gtk_tree_view_get_expander_size (tree_view);
9928   rect.width = MAX (rect.width, MAX (tree_view->priv->width, allocation.width));
9929
9930   rect.y = gtk_tree_view_get_row_y_offset (tree_view, tree, node);
9931   rect.height = gtk_tree_view_get_row_height (tree_view, node);
9932
9933   gdk_window_invalidate_rect (tree_view->priv->bin_window, &rect, TRUE);
9934 }
9935
9936 void
9937 _gtk_tree_view_queue_draw_node (GtkTreeView        *tree_view,
9938                                 GtkRBTree          *tree,
9939                                 GtkRBNode          *node,
9940                                 const GdkRectangle *clip_rect)
9941 {
9942   GtkAllocation allocation;
9943   GdkRectangle rect;
9944
9945   if (!gtk_widget_get_realized (GTK_WIDGET (tree_view)))
9946     return;
9947
9948   gtk_widget_get_allocation (GTK_WIDGET (tree_view), &allocation);
9949   rect.x = 0;
9950   rect.width = MAX (tree_view->priv->width, allocation.width);
9951
9952   rect.y = gtk_tree_view_get_row_y_offset (tree_view, tree, node);
9953   rect.height = gtk_tree_view_get_row_height (tree_view, node);
9954
9955   if (clip_rect)
9956     {
9957       GdkRectangle new_rect;
9958
9959       gdk_rectangle_intersect (clip_rect, &rect, &new_rect);
9960
9961       gdk_window_invalidate_rect (tree_view->priv->bin_window, &new_rect, TRUE);
9962     }
9963   else
9964     {
9965       gdk_window_invalidate_rect (tree_view->priv->bin_window, &rect, TRUE);
9966     }
9967 }
9968
9969 static inline gint
9970 gtk_tree_view_get_effective_header_height (GtkTreeView *tree_view)
9971 {
9972   if (tree_view->priv->headers_visible)
9973     return tree_view->priv->header_height;
9974   /* else */
9975   return 0;
9976 }
9977
9978 gint
9979 _gtk_tree_view_get_header_height (GtkTreeView *tree_view)
9980 {
9981   return tree_view->priv->header_height;
9982 }
9983
9984 void
9985 _gtk_tree_view_get_row_separator_func (GtkTreeView                 *tree_view,
9986                                        GtkTreeViewRowSeparatorFunc *func,
9987                                        gpointer                    *data)
9988 {
9989   *func = tree_view->priv->row_separator_func;
9990   *data = tree_view->priv->row_separator_data;
9991 }
9992
9993 GtkTreePath *
9994 _gtk_tree_view_get_anchor_path (GtkTreeView *tree_view)
9995 {
9996   if (tree_view->priv->anchor)
9997     return gtk_tree_row_reference_get_path (tree_view->priv->anchor);
9998
9999   return NULL;
10000 }
10001
10002 void
10003 _gtk_tree_view_set_anchor_path (GtkTreeView *tree_view,
10004                                 GtkTreePath *anchor_path)
10005 {
10006   if (tree_view->priv->anchor)
10007     {
10008       gtk_tree_row_reference_free (tree_view->priv->anchor);
10009       tree_view->priv->anchor = NULL;
10010     }
10011
10012   if (anchor_path && tree_view->priv->model)
10013     tree_view->priv->anchor =
10014       gtk_tree_row_reference_new_proxy (G_OBJECT (tree_view),
10015                                         tree_view->priv->model, anchor_path);
10016 }
10017
10018 GtkRBTree *
10019 _gtk_tree_view_get_rbtree (GtkTreeView *tree_view)
10020 {
10021   return tree_view->priv->tree;
10022 }
10023
10024 gboolean
10025 _gtk_tree_view_get_cursor_node (GtkTreeView  *tree_view,
10026                                 GtkRBTree   **tree,
10027                                 GtkRBNode   **node)
10028 {
10029   GtkTreeViewPrivate *priv;
10030
10031   priv = tree_view->priv;
10032
10033   if (priv->cursor_node == NULL)
10034     return FALSE;
10035
10036   *tree = priv->cursor_tree;
10037   *node = priv->cursor_node;
10038
10039   return TRUE;
10040 }
10041
10042 GdkWindow *
10043 _gtk_tree_view_get_header_window (GtkTreeView *tree_view)
10044 {
10045   return tree_view->priv->header_window;
10046 }
10047
10048 GtkTreeViewColumn *
10049 _gtk_tree_view_get_focus_column (GtkTreeView *tree_view)
10050 {
10051   return tree_view->priv->focus_column;
10052 }
10053
10054 void
10055 _gtk_tree_view_set_focus_column (GtkTreeView       *tree_view,
10056                                  GtkTreeViewColumn *column)
10057 {
10058   GtkTreeViewColumn *old_column = tree_view->priv->focus_column;
10059
10060   if (old_column == column)
10061     return;
10062
10063   tree_view->priv->focus_column = column;
10064
10065   _gtk_tree_view_accessible_update_focus_column (tree_view,
10066                                                  old_column,
10067                                                  column);
10068 }
10069
10070
10071 static void
10072 gtk_tree_view_queue_draw_path (GtkTreeView        *tree_view,
10073                                GtkTreePath        *path,
10074                                const GdkRectangle *clip_rect)
10075 {
10076   GtkRBTree *tree = NULL;
10077   GtkRBNode *node = NULL;
10078
10079   _gtk_tree_view_find_node (tree_view, path, &tree, &node);
10080
10081   if (tree)
10082     _gtk_tree_view_queue_draw_node (tree_view, tree, node, clip_rect);
10083 }
10084
10085 /* x and y are the mouse position
10086  */
10087 static void
10088 gtk_tree_view_draw_arrow (GtkTreeView *tree_view,
10089                           cairo_t     *cr,
10090                           GtkRBTree   *tree,
10091                           GtkRBNode   *node)
10092 {
10093   GdkRectangle area;
10094   GtkStateFlags state = 0;
10095   GtkStyleContext *context;
10096   GtkWidget *widget;
10097   gint x_offset = 0;
10098   gint x2;
10099   gint vertical_separator;
10100   gint expander_size;
10101   GtkCellRendererState flags = 0;
10102
10103   widget = GTK_WIDGET (tree_view);
10104   context = gtk_widget_get_style_context (widget);
10105
10106   gtk_widget_style_get (widget,
10107                         "vertical-separator", &vertical_separator,
10108                         NULL);
10109   expander_size = gtk_tree_view_get_expander_size (tree_view) - EXPANDER_EXTRA_PADDING;
10110
10111   if (! GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_PARENT))
10112     return;
10113
10114   gtk_tree_view_get_arrow_xrange (tree_view, tree, &x_offset, &x2);
10115
10116   area.x = x_offset;
10117   area.y = gtk_tree_view_get_cell_area_y_offset (tree_view, tree, node,
10118                                                  vertical_separator);
10119   area.width = expander_size;
10120   area.height = gtk_tree_view_get_cell_area_height (tree_view, node,
10121                                                     vertical_separator);
10122
10123   if (GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_SELECTED))
10124     flags |= GTK_CELL_RENDERER_SELECTED;
10125
10126   if (node == tree_view->priv->prelight_node &&
10127       tree_view->priv->arrow_prelit)
10128     flags |= GTK_CELL_RENDERER_PRELIT;
10129
10130   state = gtk_cell_renderer_get_state (NULL, widget, flags);
10131
10132   if (node->children != NULL)
10133     state |= GTK_STATE_FLAG_ACTIVE;
10134   else
10135     state &= ~(GTK_STATE_FLAG_ACTIVE);
10136
10137   gtk_style_context_save (context);
10138
10139   gtk_style_context_set_state (context, state);
10140   gtk_style_context_add_class (context, GTK_STYLE_CLASS_EXPANDER);
10141
10142   gtk_render_expander (context, cr,
10143                        area.x, area.y,
10144                        area.width, area.height);
10145
10146   gtk_style_context_restore (context);
10147 }
10148
10149 static void
10150 gtk_tree_view_focus_to_cursor (GtkTreeView *tree_view)
10151
10152 {
10153   GtkTreePath *cursor_path;
10154
10155   if ((tree_view->priv->tree == NULL) ||
10156       (! gtk_widget_get_realized (GTK_WIDGET (tree_view))))
10157     return;
10158
10159   cursor_path = NULL;
10160   if (tree_view->priv->cursor_node)
10161     cursor_path = _gtk_tree_path_new_from_rbtree (tree_view->priv->cursor_tree,
10162                                                   tree_view->priv->cursor_node);
10163
10164   if (cursor_path == NULL)
10165     {
10166       /* Consult the selection before defaulting to the
10167        * first focusable element
10168        */
10169       GList *selected_rows;
10170       GtkTreeModel *model;
10171       GtkTreeSelection *selection;
10172
10173       selection = gtk_tree_view_get_selection (tree_view);
10174       selected_rows = gtk_tree_selection_get_selected_rows (selection, &model);
10175
10176       if (selected_rows)
10177         {
10178           cursor_path = gtk_tree_path_copy((const GtkTreePath *)(selected_rows->data));
10179           g_list_free_full (selected_rows, (GDestroyNotify) gtk_tree_path_free);
10180         }
10181       else
10182         {
10183           cursor_path = gtk_tree_path_new_first ();
10184           search_first_focusable_path (tree_view, &cursor_path,
10185                                        TRUE, NULL, NULL);
10186         }
10187
10188       if (cursor_path)
10189         {
10190           if (gtk_tree_selection_get_mode (tree_view->priv->selection) == GTK_SELECTION_MULTIPLE)
10191             gtk_tree_view_real_set_cursor (tree_view, cursor_path, 0);
10192           else
10193             gtk_tree_view_real_set_cursor (tree_view, cursor_path, CLEAR_AND_SELECT);
10194         }
10195     }
10196
10197   if (cursor_path)
10198     {
10199       tree_view->priv->draw_keyfocus = TRUE;
10200
10201       gtk_tree_view_queue_draw_path (tree_view, cursor_path, NULL);
10202       gtk_tree_path_free (cursor_path);
10203
10204       if (tree_view->priv->focus_column == NULL)
10205         {
10206           GList *list;
10207           for (list = tree_view->priv->columns; list; list = list->next)
10208             {
10209               if (gtk_tree_view_column_get_visible (GTK_TREE_VIEW_COLUMN (list->data)))
10210                 {
10211                   GtkCellArea *cell_area;
10212
10213                   _gtk_tree_view_set_focus_column (tree_view, GTK_TREE_VIEW_COLUMN (list->data));
10214
10215                   /* This happens when the treeview initially grabs focus and there
10216                    * is no column in focus, here we explicitly focus into the first cell */
10217                   cell_area = gtk_cell_layout_get_area (GTK_CELL_LAYOUT (tree_view->priv->focus_column));
10218                   if (!gtk_cell_area_get_focus_cell (cell_area))
10219                     {
10220                       gboolean rtl;
10221
10222                       rtl = (gtk_widget_get_direction (GTK_WIDGET (tree_view)) == GTK_TEXT_DIR_RTL);
10223                       gtk_cell_area_focus (cell_area,
10224                                            rtl ? GTK_DIR_LEFT : GTK_DIR_RIGHT);
10225                     }
10226
10227                   break;
10228                 }
10229             }
10230         }
10231     }
10232 }
10233
10234 static void
10235 gtk_tree_view_move_cursor_up_down (GtkTreeView *tree_view,
10236                                    gint         count)
10237 {
10238   gint selection_count;
10239   GtkRBTree *new_cursor_tree = NULL;
10240   GtkRBNode *new_cursor_node = NULL;
10241   GtkTreePath *cursor_path = NULL;
10242   gboolean grab_focus = TRUE;
10243   gboolean selectable;
10244   GtkDirectionType direction;
10245   GtkCellArea *cell_area = NULL;
10246   GtkCellRenderer *last_focus_cell = NULL;
10247   GtkTreeIter iter;
10248
10249   if (! gtk_widget_has_focus (GTK_WIDGET (tree_view)))
10250     return;
10251
10252   if (tree_view->priv->cursor_node == NULL)
10253     return;
10254
10255   cursor_path = _gtk_tree_path_new_from_rbtree (tree_view->priv->cursor_tree,
10256                                                 tree_view->priv->cursor_node);
10257
10258   direction = count < 0 ? GTK_DIR_UP : GTK_DIR_DOWN;
10259
10260   if (tree_view->priv->focus_column)
10261     cell_area = gtk_cell_layout_get_area (GTK_CELL_LAYOUT (tree_view->priv->focus_column));
10262
10263   /* If focus stays in the area for this row, then just return for this round */
10264   if (cell_area && (count == -1 || count == 1) &&
10265       gtk_tree_model_get_iter (tree_view->priv->model, &iter, cursor_path))
10266     {
10267       gtk_tree_view_column_cell_set_cell_data (tree_view->priv->focus_column,
10268                                                tree_view->priv->model,
10269                                                &iter,
10270                                                GTK_RBNODE_FLAG_SET (tree_view->priv->cursor_node, GTK_RBNODE_IS_PARENT),
10271                                                tree_view->priv->cursor_node->children ? TRUE : FALSE);
10272
10273       /* Save the last cell that had focus, if we hit the end of the view we'll give
10274        * focus back to it. */
10275       last_focus_cell = gtk_cell_area_get_focus_cell (cell_area);
10276
10277       /* If focus stays in the area, no need to change the cursor row */
10278       if (gtk_cell_area_focus (cell_area, direction))
10279         return;
10280     }
10281
10282   selection_count = gtk_tree_selection_count_selected_rows (tree_view->priv->selection);
10283   selectable = _gtk_tree_selection_row_is_selectable (tree_view->priv->selection,
10284                                                       tree_view->priv->cursor_node,
10285                                                       cursor_path);
10286
10287   if (selection_count == 0
10288       && gtk_tree_selection_get_mode (tree_view->priv->selection) != GTK_SELECTION_NONE
10289       && !tree_view->priv->modify_selection_pressed
10290       && selectable)
10291     {
10292       /* Don't move the cursor, but just select the current node */
10293       new_cursor_tree = tree_view->priv->cursor_tree;
10294       new_cursor_node = tree_view->priv->cursor_node;
10295     }
10296   else
10297     {
10298       if (count == -1)
10299         _gtk_rbtree_prev_full (tree_view->priv->cursor_tree, tree_view->priv->cursor_node,
10300                                &new_cursor_tree, &new_cursor_node);
10301       else
10302         _gtk_rbtree_next_full (tree_view->priv->cursor_tree, tree_view->priv->cursor_node,
10303                                &new_cursor_tree, &new_cursor_node);
10304     }
10305
10306   gtk_tree_path_free (cursor_path);
10307
10308   if (new_cursor_node)
10309     {
10310       cursor_path = _gtk_tree_path_new_from_rbtree (new_cursor_tree, new_cursor_node);
10311
10312       search_first_focusable_path (tree_view, &cursor_path,
10313                                    (count != -1),
10314                                    &new_cursor_tree,
10315                                    &new_cursor_node);
10316
10317       if (cursor_path)
10318         gtk_tree_path_free (cursor_path);
10319     }
10320
10321   /*
10322    * If the list has only one item and multi-selection is set then select
10323    * the row (if not yet selected).
10324    */
10325   if (gtk_tree_selection_get_mode (tree_view->priv->selection) == GTK_SELECTION_MULTIPLE &&
10326       new_cursor_node == NULL)
10327     {
10328       if (count == -1)
10329         _gtk_rbtree_next_full (tree_view->priv->cursor_tree, tree_view->priv->cursor_node,
10330                                &new_cursor_tree, &new_cursor_node);
10331       else
10332         _gtk_rbtree_prev_full (tree_view->priv->cursor_tree, tree_view->priv->cursor_node,
10333                                &new_cursor_tree, &new_cursor_node);
10334
10335       if (new_cursor_node == NULL
10336           && !GTK_RBNODE_FLAG_SET (tree_view->priv->cursor_node, GTK_RBNODE_IS_SELECTED))
10337         {
10338           new_cursor_node = tree_view->priv->cursor_node;
10339           new_cursor_tree = tree_view->priv->cursor_tree;
10340         }
10341       else
10342         {
10343           new_cursor_tree = NULL;
10344           new_cursor_node = NULL;
10345         }
10346     }
10347
10348   if (new_cursor_node)
10349     {
10350       cursor_path = _gtk_tree_path_new_from_rbtree (new_cursor_tree, new_cursor_node);
10351       gtk_tree_view_real_set_cursor (tree_view, cursor_path, CLEAR_AND_SELECT | CLAMP_NODE);
10352       gtk_tree_path_free (cursor_path);
10353
10354       /* Give focus to the area in the new row */
10355       if (cell_area)
10356         gtk_cell_area_focus (cell_area, direction);
10357     }
10358   else
10359     {
10360       gtk_tree_view_clamp_node_visible (tree_view,
10361                                         tree_view->priv->cursor_tree,
10362                                         tree_view->priv->cursor_node);
10363
10364       if (!tree_view->priv->extend_selection_pressed)
10365         {
10366           if (! gtk_widget_keynav_failed (GTK_WIDGET (tree_view),
10367                                           count < 0 ?
10368                                           GTK_DIR_UP : GTK_DIR_DOWN))
10369             {
10370               GtkWidget *toplevel = gtk_widget_get_toplevel (GTK_WIDGET (tree_view));
10371
10372               if (toplevel)
10373                 gtk_widget_child_focus (toplevel,
10374                                         count < 0 ?
10375                                         GTK_DIR_TAB_BACKWARD :
10376                                         GTK_DIR_TAB_FORWARD);
10377
10378               grab_focus = FALSE;
10379             }
10380         }
10381       else
10382         {
10383           gtk_widget_error_bell (GTK_WIDGET (tree_view));
10384         }
10385
10386       if (cell_area)
10387         gtk_cell_area_set_focus_cell (cell_area, last_focus_cell);
10388     }
10389
10390   if (grab_focus)
10391     gtk_widget_grab_focus (GTK_WIDGET (tree_view));
10392 }
10393
10394 static void
10395 gtk_tree_view_move_cursor_page_up_down (GtkTreeView *tree_view,
10396                                         gint         count)
10397 {
10398   GtkTreePath *old_cursor_path = NULL;
10399   GtkTreePath *cursor_path = NULL;
10400   GtkRBTree *start_cursor_tree = NULL;
10401   GtkRBNode *start_cursor_node = NULL;
10402   GtkRBTree *cursor_tree;
10403   GtkRBNode *cursor_node;
10404   gint y;
10405   gint window_y;
10406   gint vertical_separator;
10407
10408   if (!gtk_widget_has_focus (GTK_WIDGET (tree_view)))
10409     return;
10410
10411   if (tree_view->priv->cursor_node == NULL)
10412     return;
10413
10414   old_cursor_path = _gtk_tree_path_new_from_rbtree (tree_view->priv->cursor_tree,
10415                                                     tree_view->priv->cursor_node);
10416
10417   gtk_widget_style_get (GTK_WIDGET (tree_view), "vertical-separator", &vertical_separator, NULL);
10418
10419   y = _gtk_rbtree_node_find_offset (tree_view->priv->cursor_tree, tree_view->priv->cursor_node);
10420   window_y = RBTREE_Y_TO_TREE_WINDOW_Y (tree_view, y);
10421   y += tree_view->priv->cursor_offset;
10422   y += count * (int)gtk_adjustment_get_page_increment (tree_view->priv->vadjustment);
10423   y = CLAMP (y, (gint)gtk_adjustment_get_lower (tree_view->priv->vadjustment),  (gint)gtk_adjustment_get_upper (tree_view->priv->vadjustment) - vertical_separator);
10424
10425   if (y >= tree_view->priv->height)
10426     y = tree_view->priv->height - 1;
10427
10428   tree_view->priv->cursor_offset =
10429     _gtk_rbtree_find_offset (tree_view->priv->tree, y,
10430                              &cursor_tree, &cursor_node);
10431
10432   if (cursor_tree == NULL)
10433     {
10434       /* FIXME: we lost the cursor.  Should we try to get one? */
10435       gtk_tree_path_free (old_cursor_path);
10436       return;
10437     }
10438
10439   if (tree_view->priv->cursor_offset
10440       > gtk_tree_view_get_row_height (tree_view, cursor_node))
10441     {
10442       _gtk_rbtree_next_full (cursor_tree, cursor_node,
10443                              &cursor_tree, &cursor_node);
10444       tree_view->priv->cursor_offset -= gtk_tree_view_get_row_height (tree_view, cursor_node);
10445     }
10446
10447   y -= tree_view->priv->cursor_offset;
10448   cursor_path = _gtk_tree_path_new_from_rbtree (cursor_tree, cursor_node);
10449
10450   start_cursor_tree = cursor_tree;
10451   start_cursor_node = cursor_node;
10452
10453   if (! search_first_focusable_path (tree_view, &cursor_path,
10454                                      (count != -1),
10455                                      &cursor_tree, &cursor_node))
10456     {
10457       /* It looks like we reached the end of the view without finding
10458        * a focusable row.  We will step backwards to find the last
10459        * focusable row.
10460        */
10461       cursor_tree = start_cursor_tree;
10462       cursor_node = start_cursor_node;
10463       cursor_path = _gtk_tree_path_new_from_rbtree (cursor_tree, cursor_node);
10464
10465       search_first_focusable_path (tree_view, &cursor_path,
10466                                    (count == -1),
10467                                    &cursor_tree, &cursor_node);
10468     }
10469
10470   if (!cursor_path)
10471     goto cleanup;
10472
10473   /* update y */
10474   y = _gtk_rbtree_node_find_offset (cursor_tree, cursor_node);
10475
10476   gtk_tree_view_real_set_cursor (tree_view, cursor_path, CLEAR_AND_SELECT);
10477
10478   y -= window_y;
10479   gtk_tree_view_scroll_to_point (tree_view, -1, y);
10480   gtk_tree_view_clamp_node_visible (tree_view, cursor_tree, cursor_node);
10481   _gtk_tree_view_queue_draw_node (tree_view, cursor_tree, cursor_node, NULL);
10482
10483   if (!gtk_tree_path_compare (old_cursor_path, cursor_path))
10484     gtk_widget_error_bell (GTK_WIDGET (tree_view));
10485
10486   gtk_widget_grab_focus (GTK_WIDGET (tree_view));
10487
10488 cleanup:
10489   gtk_tree_path_free (old_cursor_path);
10490   gtk_tree_path_free (cursor_path);
10491 }
10492
10493 static void
10494 gtk_tree_view_move_cursor_left_right (GtkTreeView *tree_view,
10495                                       gint         count)
10496 {
10497   GtkTreePath *cursor_path = NULL;
10498   GtkTreeViewColumn *column;
10499   GtkTreeIter iter;
10500   GList *list;
10501   gboolean found_column = FALSE;
10502   gboolean rtl;
10503   GtkDirectionType direction;
10504   GtkCellArea     *cell_area;
10505   GtkCellRenderer *last_focus_cell = NULL;
10506   GtkCellArea     *last_focus_area = NULL;
10507
10508   rtl = (gtk_widget_get_direction (GTK_WIDGET (tree_view)) == GTK_TEXT_DIR_RTL);
10509
10510   if (!gtk_widget_has_focus (GTK_WIDGET (tree_view)))
10511     return;
10512
10513   if (tree_view->priv->cursor_node == NULL)
10514     return;
10515
10516   cursor_path = _gtk_tree_path_new_from_rbtree (tree_view->priv->cursor_tree,
10517                                                 tree_view->priv->cursor_node);
10518
10519   if (gtk_tree_model_get_iter (tree_view->priv->model, &iter, cursor_path) == FALSE)
10520     {
10521       gtk_tree_path_free (cursor_path);
10522       return;
10523     }
10524   gtk_tree_path_free (cursor_path);
10525
10526   list = rtl ? g_list_last (tree_view->priv->columns) : g_list_first (tree_view->priv->columns);
10527   if (tree_view->priv->focus_column)
10528     {
10529       /* Save the cell/area we are moving focus from, if moving the cursor
10530        * by one step hits the end we'll set focus back here */
10531       last_focus_area = gtk_cell_layout_get_area (GTK_CELL_LAYOUT (tree_view->priv->focus_column));
10532       last_focus_cell = gtk_cell_area_get_focus_cell (last_focus_area);
10533
10534       for (; list; list = (rtl ? list->prev : list->next))
10535         {
10536           if (list->data == tree_view->priv->focus_column)
10537             break;
10538         }
10539     }
10540
10541   direction = count > 0 ? GTK_DIR_RIGHT : GTK_DIR_LEFT;
10542
10543   while (list)
10544     {
10545       column = list->data;
10546       if (gtk_tree_view_column_get_visible (column) == FALSE)
10547         goto loop_end;
10548
10549       gtk_tree_view_column_cell_set_cell_data (column,
10550                                                tree_view->priv->model,
10551                                                &iter,
10552                                                GTK_RBNODE_FLAG_SET (tree_view->priv->cursor_node, GTK_RBNODE_IS_PARENT),
10553                                                tree_view->priv->cursor_node->children ? TRUE : FALSE);
10554
10555       cell_area = gtk_cell_layout_get_area (GTK_CELL_LAYOUT (column));
10556       if (gtk_cell_area_focus (cell_area, direction))
10557         {
10558           _gtk_tree_view_set_focus_column (tree_view, column);
10559           found_column = TRUE;
10560           break;
10561         }
10562
10563     loop_end:
10564       if (count == 1)
10565         list = rtl ? list->prev : list->next;
10566       else
10567         list = rtl ? list->next : list->prev;
10568     }
10569
10570   if (found_column)
10571     {
10572       if (!gtk_tree_view_has_can_focus_cell (tree_view))
10573         _gtk_tree_view_queue_draw_node (tree_view,
10574                                         tree_view->priv->cursor_tree,
10575                                         tree_view->priv->cursor_node,
10576                                         NULL);
10577       g_signal_emit (tree_view, tree_view_signals[CURSOR_CHANGED], 0);
10578       gtk_widget_grab_focus (GTK_WIDGET (tree_view));
10579     }
10580   else
10581     {
10582       gtk_widget_error_bell (GTK_WIDGET (tree_view));
10583
10584       if (last_focus_area)
10585         gtk_cell_area_set_focus_cell (last_focus_area, last_focus_cell);
10586     }
10587
10588   gtk_tree_view_clamp_column_visible (tree_view,
10589                                       tree_view->priv->focus_column, TRUE);
10590 }
10591
10592 static void
10593 gtk_tree_view_move_cursor_start_end (GtkTreeView *tree_view,
10594                                      gint         count)
10595 {
10596   GtkRBTree *cursor_tree;
10597   GtkRBNode *cursor_node;
10598   GtkTreePath *path;
10599   GtkTreePath *old_path;
10600
10601   if (!gtk_widget_has_focus (GTK_WIDGET (tree_view)))
10602     return;
10603
10604   g_return_if_fail (tree_view->priv->tree != NULL);
10605
10606   gtk_tree_view_get_cursor (tree_view, &old_path, NULL);
10607
10608   cursor_tree = tree_view->priv->tree;
10609
10610   if (count == -1)
10611     {
10612       cursor_node = _gtk_rbtree_first (cursor_tree);
10613
10614       /* Now go forward to find the first focusable row. */
10615       path = _gtk_tree_path_new_from_rbtree (cursor_tree, cursor_node);
10616       search_first_focusable_path (tree_view, &path,
10617                                    TRUE, &cursor_tree, &cursor_node);
10618     }
10619   else
10620     {
10621       cursor_node = cursor_tree->root;
10622
10623       do
10624         {
10625           while (cursor_node && !_gtk_rbtree_is_nil (cursor_node->right))
10626             cursor_node = cursor_node->right;
10627           if (cursor_node->children == NULL)
10628             break;
10629
10630           cursor_tree = cursor_node->children;
10631           cursor_node = cursor_tree->root;
10632         }
10633       while (1);
10634
10635       /* Now go backwards to find last focusable row. */
10636       path = _gtk_tree_path_new_from_rbtree (cursor_tree, cursor_node);
10637       search_first_focusable_path (tree_view, &path,
10638                                    FALSE, &cursor_tree, &cursor_node);
10639     }
10640
10641   if (!path)
10642     goto cleanup;
10643
10644   if (gtk_tree_path_compare (old_path, path))
10645     {
10646       gtk_tree_view_real_set_cursor (tree_view, path, CLEAR_AND_SELECT | CLAMP_NODE);
10647       gtk_widget_grab_focus (GTK_WIDGET (tree_view));
10648     }
10649   else
10650     {
10651       gtk_widget_error_bell (GTK_WIDGET (tree_view));
10652     }
10653
10654 cleanup:
10655   gtk_tree_path_free (old_path);
10656   gtk_tree_path_free (path);
10657 }
10658
10659 static gboolean
10660 gtk_tree_view_real_select_all (GtkTreeView *tree_view)
10661 {
10662   if (!gtk_widget_has_focus (GTK_WIDGET (tree_view)))
10663     return FALSE;
10664
10665   if (gtk_tree_selection_get_mode (tree_view->priv->selection) != GTK_SELECTION_MULTIPLE)
10666     return FALSE;
10667
10668   gtk_tree_selection_select_all (tree_view->priv->selection);
10669
10670   return TRUE;
10671 }
10672
10673 static gboolean
10674 gtk_tree_view_real_unselect_all (GtkTreeView *tree_view)
10675 {
10676   if (!gtk_widget_has_focus (GTK_WIDGET (tree_view)))
10677     return FALSE;
10678
10679   if (gtk_tree_selection_get_mode (tree_view->priv->selection) != GTK_SELECTION_MULTIPLE)
10680     return FALSE;
10681
10682   gtk_tree_selection_unselect_all (tree_view->priv->selection);
10683
10684   return TRUE;
10685 }
10686
10687 static gboolean
10688 gtk_tree_view_real_select_cursor_row (GtkTreeView *tree_view,
10689                                       gboolean     start_editing)
10690 {
10691   GtkRBTree *new_tree = NULL;
10692   GtkRBNode *new_node = NULL;
10693   GtkRBTree *cursor_tree = NULL;
10694   GtkRBNode *cursor_node = NULL;
10695   GtkTreePath *cursor_path = NULL;
10696   GtkTreeSelectMode mode = 0;
10697
10698   if (!gtk_widget_has_focus (GTK_WIDGET (tree_view)))
10699     return FALSE;
10700
10701   if (tree_view->priv->cursor_node == NULL)
10702     return FALSE;
10703
10704   cursor_path = _gtk_tree_path_new_from_rbtree (tree_view->priv->cursor_tree,
10705                                                 tree_view->priv->cursor_node);
10706
10707   _gtk_tree_view_find_node (tree_view, cursor_path,
10708                             &cursor_tree, &cursor_node);
10709
10710   if (cursor_tree == NULL)
10711     {
10712       gtk_tree_path_free (cursor_path);
10713       return FALSE;
10714     }
10715
10716   if (!tree_view->priv->extend_selection_pressed && start_editing &&
10717       tree_view->priv->focus_column)
10718     {
10719       if (gtk_tree_view_start_editing (tree_view, cursor_path, FALSE))
10720         {
10721           gtk_tree_path_free (cursor_path);
10722           return TRUE;
10723         }
10724     }
10725
10726   if (tree_view->priv->modify_selection_pressed)
10727     mode |= GTK_TREE_SELECT_MODE_TOGGLE;
10728   if (tree_view->priv->extend_selection_pressed)
10729     mode |= GTK_TREE_SELECT_MODE_EXTEND;
10730
10731   _gtk_tree_selection_internal_select_node (tree_view->priv->selection,
10732                                             cursor_node,
10733                                             cursor_tree,
10734                                             cursor_path,
10735                                             mode,
10736                                             FALSE);
10737
10738   /* We bail out if the original (tree, node) don't exist anymore after
10739    * handling the selection-changed callback.  We do return TRUE because
10740    * the key press has been handled at this point.
10741    */
10742   _gtk_tree_view_find_node (tree_view, cursor_path, &new_tree, &new_node);
10743
10744   if (cursor_tree != new_tree || cursor_node != new_node)
10745     return FALSE;
10746
10747   gtk_tree_view_clamp_node_visible (tree_view, cursor_tree, cursor_node);
10748
10749   gtk_widget_grab_focus (GTK_WIDGET (tree_view));
10750   _gtk_tree_view_queue_draw_node (tree_view, cursor_tree, cursor_node, NULL);
10751
10752   if (!tree_view->priv->extend_selection_pressed)
10753     gtk_tree_view_row_activated (tree_view, cursor_path,
10754                                  tree_view->priv->focus_column);
10755
10756   gtk_tree_path_free (cursor_path);
10757
10758   return TRUE;
10759 }
10760
10761 static gboolean
10762 gtk_tree_view_real_toggle_cursor_row (GtkTreeView *tree_view)
10763 {
10764   GtkRBTree *new_tree = NULL;
10765   GtkRBNode *new_node = NULL;
10766   GtkTreePath *cursor_path = NULL;
10767
10768   if (!gtk_widget_has_focus (GTK_WIDGET (tree_view)))
10769     return FALSE;
10770
10771   if (tree_view->priv->cursor_node == NULL)
10772     return FALSE;
10773
10774   cursor_path = _gtk_tree_path_new_from_rbtree (tree_view->priv->cursor_tree,
10775                                                 tree_view->priv->cursor_node);
10776
10777   _gtk_tree_selection_internal_select_node (tree_view->priv->selection,
10778                                             tree_view->priv->cursor_node,
10779                                             tree_view->priv->cursor_tree,
10780                                             cursor_path,
10781                                             GTK_TREE_SELECT_MODE_TOGGLE,
10782                                             FALSE);
10783
10784   /* We bail out if the original (tree, node) don't exist anymore after
10785    * handling the selection-changed callback.  We do return TRUE because
10786    * the key press has been handled at this point.
10787    */
10788   _gtk_tree_view_find_node (tree_view, cursor_path, &new_tree, &new_node);
10789
10790   if (tree_view->priv->cursor_node != new_node)
10791     return FALSE;
10792
10793   gtk_tree_view_clamp_node_visible (tree_view,
10794                                     tree_view->priv->cursor_tree,
10795                                     tree_view->priv->cursor_node);
10796
10797   gtk_widget_grab_focus (GTK_WIDGET (tree_view));
10798   gtk_tree_view_queue_draw_path (tree_view, cursor_path, NULL);
10799   gtk_tree_path_free (cursor_path);
10800
10801   return TRUE;
10802 }
10803
10804 static gboolean
10805 gtk_tree_view_real_expand_collapse_cursor_row (GtkTreeView *tree_view,
10806                                                gboolean     logical,
10807                                                gboolean     expand,
10808                                                gboolean     open_all)
10809 {
10810   GtkTreePath *cursor_path = NULL;
10811
10812   if (!gtk_widget_has_focus (GTK_WIDGET (tree_view)))
10813     return FALSE;
10814
10815   if (tree_view->priv->cursor_node == NULL)
10816     return FALSE;
10817
10818   cursor_path = _gtk_tree_path_new_from_rbtree (tree_view->priv->cursor_tree,
10819                                                 tree_view->priv->cursor_node);
10820
10821   /* Don't handle the event if we aren't an expander */
10822   if (!GTK_RBNODE_FLAG_SET (tree_view->priv->cursor_node, GTK_RBNODE_IS_PARENT))
10823     return FALSE;
10824
10825   if (!logical
10826       && gtk_widget_get_direction (GTK_WIDGET (tree_view)) == GTK_TEXT_DIR_RTL)
10827     expand = !expand;
10828
10829   if (expand)
10830     gtk_tree_view_real_expand_row (tree_view,
10831                                    cursor_path,
10832                                    tree_view->priv->cursor_tree,
10833                                    tree_view->priv->cursor_node,
10834                                    open_all,
10835                                    TRUE);
10836   else
10837     gtk_tree_view_real_collapse_row (tree_view,
10838                                      cursor_path,
10839                                      tree_view->priv->cursor_tree,
10840                                      tree_view->priv->cursor_node,
10841                                      TRUE);
10842
10843   gtk_tree_path_free (cursor_path);
10844
10845   return TRUE;
10846 }
10847
10848 static gboolean
10849 gtk_tree_view_real_select_cursor_parent (GtkTreeView *tree_view)
10850 {
10851   GtkTreePath *cursor_path = NULL;
10852   GdkModifierType state;
10853
10854   if (!gtk_widget_has_focus (GTK_WIDGET (tree_view)))
10855     goto out;
10856
10857   if (tree_view->priv->cursor_node == NULL)
10858     goto out;
10859
10860   cursor_path = _gtk_tree_path_new_from_rbtree (tree_view->priv->cursor_tree,
10861                                                 tree_view->priv->cursor_node);
10862
10863   if (tree_view->priv->cursor_tree->parent_node)
10864     {
10865       gtk_tree_view_queue_draw_path (tree_view, cursor_path, NULL);
10866
10867       gtk_tree_path_up (cursor_path);
10868
10869       if (gtk_get_current_event_state (&state))
10870         {
10871           GdkModifierType modify_mod_mask;
10872
10873           modify_mod_mask =
10874             gtk_widget_get_modifier_mask (GTK_WIDGET (tree_view),
10875                                           GDK_MODIFIER_INTENT_MODIFY_SELECTION);
10876
10877           if ((state & modify_mod_mask) == modify_mod_mask)
10878             tree_view->priv->modify_selection_pressed = TRUE;
10879         }
10880
10881       gtk_tree_view_real_set_cursor (tree_view, cursor_path, CLEAR_AND_SELECT | CLAMP_NODE);
10882       gtk_tree_path_free (cursor_path);
10883
10884       gtk_widget_grab_focus (GTK_WIDGET (tree_view));
10885
10886       tree_view->priv->modify_selection_pressed = FALSE;
10887
10888       return TRUE;
10889     }
10890
10891  out:
10892
10893   tree_view->priv->search_entry_avoid_unhandled_binding = TRUE;
10894   return FALSE;
10895 }
10896
10897 static gboolean
10898 gtk_tree_view_search_entry_flush_timeout (GtkTreeView *tree_view)
10899 {
10900   gtk_tree_view_search_dialog_hide (tree_view->priv->search_window, tree_view, NULL);
10901   tree_view->priv->typeselect_flush_timeout = 0;
10902
10903   return FALSE;
10904 }
10905
10906 /* Cut and paste from gtkwindow.c */
10907 static void
10908 send_focus_change (GtkWidget *widget,
10909                    GdkDevice *device,
10910                    gboolean   in)
10911 {
10912   GdkDeviceManager *device_manager;
10913   GList *devices, *d;
10914
10915   device_manager = gdk_display_get_device_manager (gtk_widget_get_display (widget));
10916   devices = gdk_device_manager_list_devices (device_manager, GDK_DEVICE_TYPE_MASTER);
10917   devices = g_list_concat (devices, gdk_device_manager_list_devices (device_manager, GDK_DEVICE_TYPE_SLAVE));
10918   devices = g_list_concat (devices, gdk_device_manager_list_devices (device_manager, GDK_DEVICE_TYPE_FLOATING));
10919
10920   for (d = devices; d; d = d->next)
10921     {
10922       GdkDevice *dev = d->data;
10923       GdkEvent *fevent;
10924       GdkWindow *window;
10925
10926       if (gdk_device_get_source (dev) != GDK_SOURCE_KEYBOARD)
10927         continue;
10928
10929       window = gtk_widget_get_window (widget);
10930
10931       /* Skip non-master keyboards that haven't
10932        * selected for events from this window
10933        */
10934       if (gdk_device_get_device_type (dev) != GDK_DEVICE_TYPE_MASTER &&
10935           !gdk_window_get_device_events (window, dev))
10936         continue;
10937
10938       fevent = gdk_event_new (GDK_FOCUS_CHANGE);
10939
10940       fevent->focus_change.type = GDK_FOCUS_CHANGE;
10941       fevent->focus_change.window = g_object_ref (window);
10942       fevent->focus_change.in = in;
10943       gdk_event_set_device (fevent, device);
10944
10945       gtk_widget_send_focus_change (widget, fevent);
10946
10947       gdk_event_free (fevent);
10948     }
10949
10950   g_list_free (devices);
10951 }
10952
10953 static void
10954 gtk_tree_view_ensure_interactive_directory (GtkTreeView *tree_view)
10955 {
10956   GtkWidget *frame, *vbox, *toplevel;
10957   GdkScreen *screen;
10958
10959   if (tree_view->priv->search_custom_entry_set)
10960     return;
10961
10962   toplevel = gtk_widget_get_toplevel (GTK_WIDGET (tree_view));
10963   screen = gtk_widget_get_screen (GTK_WIDGET (tree_view));
10964
10965    if (tree_view->priv->search_window != NULL)
10966      {
10967        if (gtk_window_has_group (GTK_WINDOW (toplevel)))
10968          gtk_window_group_add_window (gtk_window_get_group (GTK_WINDOW (toplevel)),
10969                                       GTK_WINDOW (tree_view->priv->search_window));
10970        else if (gtk_window_has_group (GTK_WINDOW (tree_view->priv->search_window)))
10971          gtk_window_group_remove_window (gtk_window_get_group (GTK_WINDOW (tree_view->priv->search_window)),
10972                                          GTK_WINDOW (tree_view->priv->search_window));
10973
10974        gtk_window_set_screen (GTK_WINDOW (tree_view->priv->search_window), screen);
10975
10976        return;
10977      }
10978
10979   tree_view->priv->search_window = gtk_window_new (GTK_WINDOW_POPUP);
10980   gtk_window_set_screen (GTK_WINDOW (tree_view->priv->search_window), screen);
10981
10982   if (gtk_window_has_group (GTK_WINDOW (toplevel)))
10983     gtk_window_group_add_window (gtk_window_get_group (GTK_WINDOW (toplevel)),
10984                                  GTK_WINDOW (tree_view->priv->search_window));
10985
10986   gtk_window_set_type_hint (GTK_WINDOW (tree_view->priv->search_window),
10987                             GDK_WINDOW_TYPE_HINT_UTILITY);
10988   gtk_window_set_modal (GTK_WINDOW (tree_view->priv->search_window), TRUE);
10989   g_signal_connect (tree_view->priv->search_window, "delete-event",
10990                     G_CALLBACK (gtk_tree_view_search_delete_event),
10991                     tree_view);
10992   g_signal_connect (tree_view->priv->search_window, "key-press-event",
10993                     G_CALLBACK (gtk_tree_view_search_key_press_event),
10994                     tree_view);
10995   g_signal_connect (tree_view->priv->search_window, "button-press-event",
10996                     G_CALLBACK (gtk_tree_view_search_button_press_event),
10997                     tree_view);
10998   g_signal_connect (tree_view->priv->search_window, "scroll-event",
10999                     G_CALLBACK (gtk_tree_view_search_scroll_event),
11000                     tree_view);
11001
11002   frame = gtk_frame_new (NULL);
11003   gtk_frame_set_shadow_type (GTK_FRAME (frame), GTK_SHADOW_ETCHED_IN);
11004   gtk_widget_show (frame);
11005   gtk_container_add (GTK_CONTAINER (tree_view->priv->search_window), frame);
11006
11007   vbox = gtk_box_new (GTK_ORIENTATION_VERTICAL, 0);
11008   gtk_widget_show (vbox);
11009   gtk_container_add (GTK_CONTAINER (frame), vbox);
11010   gtk_container_set_border_width (GTK_CONTAINER (vbox), 3);
11011
11012   /* add entry */
11013   tree_view->priv->search_entry = gtk_entry_new ();
11014   gtk_widget_show (tree_view->priv->search_entry);
11015   g_signal_connect (tree_view->priv->search_entry, "populate-popup",
11016                     G_CALLBACK (gtk_tree_view_search_disable_popdown),
11017                     tree_view);
11018   g_signal_connect (tree_view->priv->search_entry,
11019                     "activate", G_CALLBACK (gtk_tree_view_search_activate),
11020                     tree_view);
11021
11022   g_signal_connect (_gtk_entry_get_im_context (GTK_ENTRY (tree_view->priv->search_entry)),
11023                     "preedit-changed",
11024                     G_CALLBACK (gtk_tree_view_search_preedit_changed),
11025                     tree_view);
11026
11027   gtk_container_add (GTK_CONTAINER (vbox),
11028                      tree_view->priv->search_entry);
11029
11030   gtk_widget_realize (tree_view->priv->search_entry);
11031 }
11032
11033 /* Pops up the interactive search entry.  If keybinding is TRUE then the user
11034  * started this by typing the start_interactive_search keybinding.  Otherwise, it came from
11035  */
11036 static gboolean
11037 gtk_tree_view_real_start_interactive_search (GtkTreeView *tree_view,
11038                                              GdkDevice   *device,
11039                                              gboolean     keybinding)
11040 {
11041   /* We only start interactive search if we have focus or the columns
11042    * have focus.  If one of our children have focus, we don't want to
11043    * start the search.
11044    */
11045   GList *list;
11046   gboolean found_focus = FALSE;
11047   GtkWidgetClass *entry_parent_class;
11048
11049   if (!tree_view->priv->enable_search && !keybinding)
11050     return FALSE;
11051
11052   if (tree_view->priv->search_custom_entry_set)
11053     return FALSE;
11054
11055   if (tree_view->priv->search_window != NULL &&
11056       gtk_widget_get_visible (tree_view->priv->search_window))
11057     return TRUE;
11058
11059   for (list = tree_view->priv->columns; list; list = list->next)
11060     {
11061       GtkTreeViewColumn *column;
11062       GtkWidget         *button;
11063
11064       column = list->data;
11065       if (!gtk_tree_view_column_get_visible (column))
11066         continue;
11067
11068       button = gtk_tree_view_column_get_button (column);
11069       if (gtk_widget_has_focus (button))
11070         {
11071           found_focus = TRUE;
11072           break;
11073         }
11074     }
11075
11076   if (gtk_widget_has_focus (GTK_WIDGET (tree_view)))
11077     found_focus = TRUE;
11078
11079   if (!found_focus)
11080     return FALSE;
11081
11082   if (tree_view->priv->search_column < 0)
11083     return FALSE;
11084
11085   gtk_tree_view_ensure_interactive_directory (tree_view);
11086
11087   if (keybinding)
11088     gtk_entry_set_text (GTK_ENTRY (tree_view->priv->search_entry), "");
11089
11090   /* done, show it */
11091   tree_view->priv->search_position_func (tree_view, tree_view->priv->search_window, tree_view->priv->search_position_user_data);
11092   gtk_widget_show (tree_view->priv->search_window);
11093   if (tree_view->priv->search_entry_changed_id == 0)
11094     {
11095       tree_view->priv->search_entry_changed_id =
11096         g_signal_connect (tree_view->priv->search_entry, "changed",
11097                           G_CALLBACK (gtk_tree_view_search_init),
11098                           tree_view);
11099     }
11100
11101   tree_view->priv->typeselect_flush_timeout =
11102     gdk_threads_add_timeout (GTK_TREE_VIEW_SEARCH_DIALOG_TIMEOUT,
11103                    (GSourceFunc) gtk_tree_view_search_entry_flush_timeout,
11104                    tree_view);
11105
11106   /* Grab focus will select all the text.  We don't want that to happen, so we
11107    * call the parent instance and bypass the selection change.  This is probably
11108    * really non-kosher. */
11109   entry_parent_class = g_type_class_peek_parent (GTK_ENTRY_GET_CLASS (tree_view->priv->search_entry));
11110   (entry_parent_class->grab_focus) (tree_view->priv->search_entry);
11111
11112   /* send focus-in event */
11113   send_focus_change (tree_view->priv->search_entry, device, TRUE);
11114
11115   /* search first matching iter */
11116   gtk_tree_view_search_init (tree_view->priv->search_entry, tree_view);
11117
11118   return TRUE;
11119 }
11120
11121 static gboolean
11122 gtk_tree_view_start_interactive_search (GtkTreeView *tree_view)
11123 {
11124   return gtk_tree_view_real_start_interactive_search (tree_view,
11125                                                       gtk_get_current_event_device (),
11126                                                       TRUE);
11127 }
11128
11129 /* this function returns the new width of the column being resized given
11130  * the column and x position of the cursor; the x cursor position is passed
11131  * in as a pointer and automagicly corrected if it's beyond min/max limits
11132  */
11133 static gint
11134 gtk_tree_view_new_column_width (GtkTreeView *tree_view,
11135                                 gint       i,
11136                                 gint      *x)
11137 {
11138   GtkAllocation allocation;
11139   GtkTreeViewColumn *column;
11140   GtkRequisition button_req;
11141   gint max_width, min_width;
11142   gint width;
11143   gboolean rtl;
11144
11145   /* first translate the x position from widget->window
11146    * to clist->clist_window
11147    */
11148   rtl = (gtk_widget_get_direction (GTK_WIDGET (tree_view)) == GTK_TEXT_DIR_RTL);
11149   column = g_list_nth (tree_view->priv->columns, i)->data;
11150   gtk_widget_get_allocation (gtk_tree_view_column_get_button (column), &allocation);
11151   width = rtl ? (allocation.x + allocation.width - *x) : (*x - allocation.x);
11152
11153   /* Clamp down the value */
11154   min_width = gtk_tree_view_column_get_min_width (column);
11155   if (min_width == -1)
11156     {
11157       gtk_widget_get_preferred_size (gtk_tree_view_column_get_button (column), &button_req, NULL);
11158       width = MAX (button_req.width, width);
11159     }
11160   else
11161     width = MAX (min_width, width);
11162
11163   max_width = gtk_tree_view_column_get_max_width (column);
11164   if (max_width != -1)
11165     width = MIN (width, max_width);
11166
11167   *x = rtl ? (allocation.x + allocation.width - width) : (allocation.x + width);
11168
11169   return width;
11170 }
11171
11172
11173 /* FIXME this adjust_allocation is a big cut-and-paste from
11174  * GtkCList, needs to be some "official" way to do this
11175  * factored out.
11176  */
11177 typedef struct
11178 {
11179   GdkWindow *window;
11180   int dx;
11181   int dy;
11182 } ScrollData;
11183
11184 /* The window to which widget->window is relative */
11185 #define ALLOCATION_WINDOW(widget)               \
11186    (!gtk_widget_get_has_window (widget) ?                   \
11187     gtk_widget_get_window (widget) :                        \
11188     gdk_window_get_parent (gtk_widget_get_window (widget)))
11189
11190 static void
11191 adjust_allocation_recurse (GtkWidget *widget,
11192                            gpointer   data)
11193 {
11194   GtkAllocation allocation;
11195   ScrollData *scroll_data = data;
11196
11197   /* Need to really size allocate instead of just poking
11198    * into widget->allocation if the widget is not realized.
11199    * FIXME someone figure out why this was.
11200    */
11201   gtk_widget_get_allocation (widget, &allocation);
11202   if (!gtk_widget_get_realized (widget))
11203     {
11204       if (gtk_widget_get_visible (widget))
11205         {
11206           GdkRectangle tmp_rectangle = allocation;
11207           tmp_rectangle.x += scroll_data->dx;
11208           tmp_rectangle.y += scroll_data->dy;
11209
11210           gtk_widget_size_allocate (widget, &tmp_rectangle);
11211         }
11212     }
11213   else
11214     {
11215       if (ALLOCATION_WINDOW (widget) == scroll_data->window)
11216         {
11217           allocation.x += scroll_data->dx;
11218           allocation.y += scroll_data->dy;
11219           gtk_widget_set_allocation (widget, &allocation);
11220
11221           if (GTK_IS_CONTAINER (widget))
11222             gtk_container_forall (GTK_CONTAINER (widget),
11223                                   adjust_allocation_recurse,
11224                                   data);
11225         }
11226     }
11227 }
11228
11229 static void
11230 adjust_allocation (GtkWidget *widget,
11231                    int        dx,
11232                    int        dy)
11233 {
11234   ScrollData scroll_data;
11235
11236   if (gtk_widget_get_realized (widget))
11237     scroll_data.window = ALLOCATION_WINDOW (widget);
11238   else
11239     scroll_data.window = NULL;
11240
11241   scroll_data.dx = dx;
11242   scroll_data.dy = dy;
11243
11244   adjust_allocation_recurse (widget, &scroll_data);
11245 }
11246
11247 /* Callbacks */
11248 static void
11249 gtk_tree_view_adjustment_changed (GtkAdjustment *adjustment,
11250                                   GtkTreeView   *tree_view)
11251 {
11252   if (gtk_widget_get_realized (GTK_WIDGET (tree_view)))
11253     {
11254       gint dy;
11255
11256       gdk_window_move (tree_view->priv->bin_window,
11257                        - gtk_adjustment_get_value (tree_view->priv->hadjustment),
11258                        gtk_tree_view_get_effective_header_height (tree_view));
11259       gdk_window_move (tree_view->priv->header_window,
11260                        - gtk_adjustment_get_value (tree_view->priv->hadjustment),
11261                        0);
11262       dy = tree_view->priv->dy - (int) gtk_adjustment_get_value (tree_view->priv->vadjustment);
11263       if (dy)
11264         {
11265           update_prelight (tree_view,
11266                            tree_view->priv->event_last_x,
11267                            tree_view->priv->event_last_y - dy);
11268
11269           if (tree_view->priv->edited_column)
11270             {
11271               GList *list;
11272               GtkTreeViewChild *child = NULL;
11273               GtkCellEditable *edit_widget;
11274               GtkCellArea *area;
11275
11276               area        = gtk_cell_layout_get_area (GTK_CELL_LAYOUT (tree_view->priv->edited_column));
11277               edit_widget = gtk_cell_area_get_edit_widget (area);
11278               if (GTK_IS_WIDGET (edit_widget))
11279                 {
11280                   adjust_allocation (GTK_WIDGET (edit_widget), 0, dy);
11281
11282                   for (list = tree_view->priv->children; list; list = list->next)
11283                     {
11284                       child = (GtkTreeViewChild *)list->data;
11285                       if (child->widget == GTK_WIDGET (edit_widget))
11286                         {
11287                           child->y += dy;
11288                           break;
11289                         }
11290                     }
11291                 }
11292             }
11293         }
11294       gdk_window_scroll (tree_view->priv->bin_window, 0, dy);
11295
11296       if (tree_view->priv->dy != (int) gtk_adjustment_get_value (tree_view->priv->vadjustment))
11297         {
11298           /* update our dy and top_row */
11299           tree_view->priv->dy = (int) gtk_adjustment_get_value (tree_view->priv->vadjustment);
11300
11301           if (!tree_view->priv->in_top_row_to_dy)
11302             gtk_tree_view_dy_to_top_row (tree_view);
11303         }
11304     }
11305 }
11306
11307 \f
11308
11309 /* Public methods
11310  */
11311
11312 /**
11313  * gtk_tree_view_new:
11314  *
11315  * Creates a new #GtkTreeView widget.
11316  *
11317  * Return value: A newly created #GtkTreeView widget.
11318  **/
11319 GtkWidget *
11320 gtk_tree_view_new (void)
11321 {
11322   return g_object_new (GTK_TYPE_TREE_VIEW, NULL);
11323 }
11324
11325 /**
11326  * gtk_tree_view_new_with_model:
11327  * @model: the model.
11328  *
11329  * Creates a new #GtkTreeView widget with the model initialized to @model.
11330  *
11331  * Return value: A newly created #GtkTreeView widget.
11332  **/
11333 GtkWidget *
11334 gtk_tree_view_new_with_model (GtkTreeModel *model)
11335 {
11336   return g_object_new (GTK_TYPE_TREE_VIEW, "model", model, NULL);
11337 }
11338
11339 /* Public Accessors
11340  */
11341
11342 /**
11343  * gtk_tree_view_get_model:
11344  * @tree_view: a #GtkTreeView
11345  *
11346  * Returns the model the #GtkTreeView is based on.  Returns %NULL if the
11347  * model is unset.
11348  *
11349  * Return value: (transfer none): A #GtkTreeModel, or %NULL if none is currently being used.
11350  **/
11351 GtkTreeModel *
11352 gtk_tree_view_get_model (GtkTreeView *tree_view)
11353 {
11354   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), NULL);
11355
11356   return tree_view->priv->model;
11357 }
11358
11359 /**
11360  * gtk_tree_view_set_model:
11361  * @tree_view: A #GtkTreeView.
11362  * @model: (allow-none): The model.
11363  *
11364  * Sets the model for a #GtkTreeView.  If the @tree_view already has a model
11365  * set, it will remove it before setting the new model.  If @model is %NULL,
11366  * then it will unset the old model.
11367  **/
11368 void
11369 gtk_tree_view_set_model (GtkTreeView  *tree_view,
11370                          GtkTreeModel *model)
11371 {
11372   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
11373   g_return_if_fail (model == NULL || GTK_IS_TREE_MODEL (model));
11374
11375   if (model == tree_view->priv->model)
11376     return;
11377
11378   if (tree_view->priv->scroll_to_path)
11379     {
11380       gtk_tree_row_reference_free (tree_view->priv->scroll_to_path);
11381       tree_view->priv->scroll_to_path = NULL;
11382     }
11383
11384   if (tree_view->priv->rubber_band_status)
11385     gtk_tree_view_stop_rubber_band (tree_view);
11386
11387   if (tree_view->priv->model)
11388     {
11389       GList *tmplist = tree_view->priv->columns;
11390
11391       gtk_tree_view_unref_and_check_selection_tree (tree_view, tree_view->priv->tree);
11392       gtk_tree_view_stop_editing (tree_view, TRUE);
11393
11394       g_signal_handlers_disconnect_by_func (tree_view->priv->model,
11395                                             gtk_tree_view_row_changed,
11396                                             tree_view);
11397       g_signal_handlers_disconnect_by_func (tree_view->priv->model,
11398                                             gtk_tree_view_row_inserted,
11399                                             tree_view);
11400       g_signal_handlers_disconnect_by_func (tree_view->priv->model,
11401                                             gtk_tree_view_row_has_child_toggled,
11402                                             tree_view);
11403       g_signal_handlers_disconnect_by_func (tree_view->priv->model,
11404                                             gtk_tree_view_row_deleted,
11405                                             tree_view);
11406       g_signal_handlers_disconnect_by_func (tree_view->priv->model,
11407                                             gtk_tree_view_rows_reordered,
11408                                             tree_view);
11409
11410       for (; tmplist; tmplist = tmplist->next)
11411         _gtk_tree_view_column_unset_model (tmplist->data,
11412                                            tree_view->priv->model);
11413
11414       if (tree_view->priv->tree)
11415         gtk_tree_view_free_rbtree (tree_view);
11416
11417       gtk_tree_row_reference_free (tree_view->priv->drag_dest_row);
11418       tree_view->priv->drag_dest_row = NULL;
11419       gtk_tree_row_reference_free (tree_view->priv->anchor);
11420       tree_view->priv->anchor = NULL;
11421       gtk_tree_row_reference_free (tree_view->priv->top_row);
11422       tree_view->priv->top_row = NULL;
11423       gtk_tree_row_reference_free (tree_view->priv->scroll_to_path);
11424       tree_view->priv->scroll_to_path = NULL;
11425
11426       tree_view->priv->scroll_to_column = NULL;
11427
11428       g_object_unref (tree_view->priv->model);
11429
11430       tree_view->priv->search_column = -1;
11431       tree_view->priv->fixed_height_check = 0;
11432       tree_view->priv->fixed_height = -1;
11433       tree_view->priv->dy = tree_view->priv->top_row_dy = 0;
11434       tree_view->priv->last_button_x = -1;
11435       tree_view->priv->last_button_y = -1;
11436     }
11437
11438   tree_view->priv->model = model;
11439
11440   if (tree_view->priv->model)
11441     {
11442       gint i;
11443       GtkTreePath *path;
11444       GtkTreeIter iter;
11445       GtkTreeModelFlags flags;
11446
11447       if (tree_view->priv->search_column == -1)
11448         {
11449           for (i = 0; i < gtk_tree_model_get_n_columns (model); i++)
11450             {
11451               GType type = gtk_tree_model_get_column_type (model, i);
11452
11453               if (g_value_type_transformable (type, G_TYPE_STRING))
11454                 {
11455                   tree_view->priv->search_column = i;
11456                   break;
11457                 }
11458             }
11459         }
11460
11461       g_object_ref (tree_view->priv->model);
11462       g_signal_connect (tree_view->priv->model,
11463                         "row-changed",
11464                         G_CALLBACK (gtk_tree_view_row_changed),
11465                         tree_view);
11466       g_signal_connect (tree_view->priv->model,
11467                         "row-inserted",
11468                         G_CALLBACK (gtk_tree_view_row_inserted),
11469                         tree_view);
11470       g_signal_connect (tree_view->priv->model,
11471                         "row-has-child-toggled",
11472                         G_CALLBACK (gtk_tree_view_row_has_child_toggled),
11473                         tree_view);
11474       g_signal_connect (tree_view->priv->model,
11475                         "row-deleted",
11476                         G_CALLBACK (gtk_tree_view_row_deleted),
11477                         tree_view);
11478       g_signal_connect (tree_view->priv->model,
11479                         "rows-reordered",
11480                         G_CALLBACK (gtk_tree_view_rows_reordered),
11481                         tree_view);
11482
11483       flags = gtk_tree_model_get_flags (tree_view->priv->model);
11484       if ((flags & GTK_TREE_MODEL_LIST_ONLY) == GTK_TREE_MODEL_LIST_ONLY)
11485         tree_view->priv->is_list = TRUE;
11486       else
11487         tree_view->priv->is_list = FALSE;
11488
11489       path = gtk_tree_path_new_first ();
11490       if (gtk_tree_model_get_iter (tree_view->priv->model, &iter, path))
11491         {
11492           tree_view->priv->tree = _gtk_rbtree_new ();
11493           gtk_tree_view_build_tree (tree_view, tree_view->priv->tree, &iter, 1, FALSE);
11494           _gtk_tree_view_accessible_add (tree_view, tree_view->priv->tree, NULL);
11495         }
11496       gtk_tree_path_free (path);
11497
11498       /*  FIXME: do I need to do this? gtk_tree_view_create_buttons (tree_view); */
11499       install_presize_handler (tree_view);
11500     }
11501
11502   gtk_tree_view_real_set_cursor (tree_view, NULL, CURSOR_INVALID);
11503
11504   g_object_notify (G_OBJECT (tree_view), "model");
11505
11506   if (tree_view->priv->selection)
11507   _gtk_tree_selection_emit_changed (tree_view->priv->selection);
11508
11509   if (gtk_widget_get_realized (GTK_WIDGET (tree_view)))
11510     gtk_widget_queue_resize (GTK_WIDGET (tree_view));
11511 }
11512
11513 /**
11514  * gtk_tree_view_get_selection:
11515  * @tree_view: A #GtkTreeView.
11516  *
11517  * Gets the #GtkTreeSelection associated with @tree_view.
11518  *
11519  * Return value: (transfer none): A #GtkTreeSelection object.
11520  **/
11521 GtkTreeSelection *
11522 gtk_tree_view_get_selection (GtkTreeView *tree_view)
11523 {
11524   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), NULL);
11525
11526   return tree_view->priv->selection;
11527 }
11528
11529 /**
11530  * gtk_tree_view_get_hadjustment:
11531  * @tree_view: A #GtkTreeView
11532  *
11533  * Gets the #GtkAdjustment currently being used for the horizontal aspect.
11534  *
11535  * Return value: (transfer none): A #GtkAdjustment object, or %NULL
11536  *     if none is currently being used.
11537  *
11538  * Deprecated: 3.0: Use gtk_scrollable_get_hadjustment()
11539  **/
11540 GtkAdjustment *
11541 gtk_tree_view_get_hadjustment (GtkTreeView *tree_view)
11542 {
11543   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), NULL);
11544
11545   return gtk_tree_view_do_get_hadjustment (tree_view);
11546 }
11547
11548 static GtkAdjustment *
11549 gtk_tree_view_do_get_hadjustment (GtkTreeView *tree_view)
11550 {
11551   return tree_view->priv->hadjustment;
11552 }
11553
11554 /**
11555  * gtk_tree_view_set_hadjustment:
11556  * @tree_view: A #GtkTreeView
11557  * @adjustment: (allow-none): The #GtkAdjustment to set, or %NULL
11558  *
11559  * Sets the #GtkAdjustment for the current horizontal aspect.
11560  *
11561  * Deprecated: 3.0: Use gtk_scrollable_set_hadjustment()
11562  **/
11563 void
11564 gtk_tree_view_set_hadjustment (GtkTreeView   *tree_view,
11565                                GtkAdjustment *adjustment)
11566 {
11567   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
11568   g_return_if_fail (adjustment == NULL || GTK_IS_ADJUSTMENT (adjustment));
11569
11570   gtk_tree_view_do_set_hadjustment (tree_view, adjustment);
11571 }
11572
11573 static void
11574 gtk_tree_view_do_set_hadjustment (GtkTreeView   *tree_view,
11575                                   GtkAdjustment *adjustment)
11576 {
11577   GtkTreeViewPrivate *priv = tree_view->priv;
11578
11579   if (adjustment && priv->hadjustment == adjustment)
11580     return;
11581
11582   if (priv->hadjustment != NULL)
11583     {
11584       g_signal_handlers_disconnect_by_func (priv->hadjustment,
11585                                             gtk_tree_view_adjustment_changed,
11586                                             tree_view);
11587       g_object_unref (priv->hadjustment);
11588     }
11589
11590   if (adjustment == NULL)
11591     adjustment = gtk_adjustment_new (0.0, 0.0, 0.0,
11592                                      0.0, 0.0, 0.0);
11593
11594   g_signal_connect (adjustment, "value-changed",
11595                     G_CALLBACK (gtk_tree_view_adjustment_changed), tree_view);
11596   priv->hadjustment = g_object_ref_sink (adjustment);
11597   /* FIXME: Adjustment should probably be populated here with fresh values, but
11598    * internal details are too complicated for me to decipher right now.
11599    */
11600   gtk_tree_view_adjustment_changed (NULL, tree_view);
11601
11602   g_object_notify (G_OBJECT (tree_view), "hadjustment");
11603 }
11604
11605 /**
11606  * gtk_tree_view_get_vadjustment:
11607  * @tree_view: A #GtkTreeView
11608  *
11609  * Gets the #GtkAdjustment currently being used for the vertical aspect.
11610  *
11611  * Return value: (transfer none): A #GtkAdjustment object, or %NULL
11612  *     if none is currently being used.
11613  *
11614  * Deprecated: 3.0: Use gtk_scrollable_get_vadjustment()
11615  **/
11616 GtkAdjustment *
11617 gtk_tree_view_get_vadjustment (GtkTreeView *tree_view)
11618 {
11619   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), NULL);
11620
11621   return gtk_tree_view_do_get_vadjustment (tree_view);
11622 }
11623
11624 static GtkAdjustment *
11625 gtk_tree_view_do_get_vadjustment (GtkTreeView *tree_view)
11626 {
11627   return tree_view->priv->vadjustment;
11628 }
11629
11630 /**
11631  * gtk_tree_view_set_vadjustment:
11632  * @tree_view: A #GtkTreeView
11633  * @adjustment: (allow-none): The #GtkAdjustment to set, or %NULL
11634  *
11635  * Sets the #GtkAdjustment for the current vertical aspect.
11636  *
11637  * Deprecated: 3.0: Use gtk_scrollable_set_vadjustment()
11638  **/
11639 void
11640 gtk_tree_view_set_vadjustment (GtkTreeView   *tree_view,
11641                                GtkAdjustment *adjustment)
11642 {
11643   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
11644   g_return_if_fail (adjustment == NULL || GTK_IS_ADJUSTMENT (adjustment));
11645
11646   gtk_tree_view_do_set_vadjustment (tree_view, adjustment);
11647 }
11648
11649 static void
11650 gtk_tree_view_do_set_vadjustment (GtkTreeView   *tree_view,
11651                                   GtkAdjustment *adjustment)
11652 {
11653   GtkTreeViewPrivate *priv = tree_view->priv;
11654
11655   if (adjustment && priv->vadjustment == adjustment)
11656     return;
11657
11658   if (priv->vadjustment != NULL)
11659     {
11660       g_signal_handlers_disconnect_by_func (priv->vadjustment,
11661                                             gtk_tree_view_adjustment_changed,
11662                                             tree_view);
11663       g_object_unref (priv->vadjustment);
11664     }
11665
11666   if (adjustment == NULL)
11667     adjustment = gtk_adjustment_new (0.0, 0.0, 0.0,
11668                                      0.0, 0.0, 0.0);
11669
11670   g_signal_connect (adjustment, "value-changed",
11671                     G_CALLBACK (gtk_tree_view_adjustment_changed), tree_view);
11672   priv->vadjustment = g_object_ref_sink (adjustment);
11673   /* FIXME: Adjustment should probably be populated here with fresh values, but
11674    * internal details are too complicated for me to decipher right now.
11675    */
11676   gtk_tree_view_adjustment_changed (NULL, tree_view);
11677   g_object_notify (G_OBJECT (tree_view), "vadjustment");
11678 }
11679
11680 /* Column and header operations */
11681
11682 /**
11683  * gtk_tree_view_get_headers_visible:
11684  * @tree_view: A #GtkTreeView.
11685  *
11686  * Returns %TRUE if the headers on the @tree_view are visible.
11687  *
11688  * Return value: Whether the headers are visible or not.
11689  **/
11690 gboolean
11691 gtk_tree_view_get_headers_visible (GtkTreeView *tree_view)
11692 {
11693   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), FALSE);
11694
11695   return tree_view->priv->headers_visible;
11696 }
11697
11698 /**
11699  * gtk_tree_view_set_headers_visible:
11700  * @tree_view: A #GtkTreeView.
11701  * @headers_visible: %TRUE if the headers are visible
11702  *
11703  * Sets the visibility state of the headers.
11704  **/
11705 void
11706 gtk_tree_view_set_headers_visible (GtkTreeView *tree_view,
11707                                    gboolean     headers_visible)
11708 {
11709   gint x, y;
11710   GList *list;
11711   GtkTreeViewColumn *column;
11712   GtkAllocation allocation;
11713   GtkWidget *button;
11714
11715   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
11716
11717   headers_visible = !! headers_visible;
11718
11719   if (tree_view->priv->headers_visible == headers_visible)
11720     return;
11721
11722   tree_view->priv->headers_visible = headers_visible == TRUE;
11723
11724   if (gtk_widget_get_realized (GTK_WIDGET (tree_view)))
11725     {
11726       gdk_window_get_position (tree_view->priv->bin_window, &x, &y);
11727       if (headers_visible)
11728         {
11729           gtk_widget_get_allocation (GTK_WIDGET (tree_view), &allocation);
11730           gdk_window_move_resize (tree_view->priv->bin_window,
11731                                   x, y  + gtk_tree_view_get_effective_header_height (tree_view),
11732                                   tree_view->priv->width, allocation.height -  + gtk_tree_view_get_effective_header_height (tree_view));
11733
11734           if (gtk_widget_get_mapped (GTK_WIDGET (tree_view)))
11735             gtk_tree_view_map_buttons (tree_view);
11736         }
11737       else
11738         {
11739           gdk_window_move_resize (tree_view->priv->bin_window, x, y, tree_view->priv->width, tree_view->priv->height);
11740
11741           for (list = tree_view->priv->columns; list; list = list->next)
11742             {
11743               column = list->data;
11744               button = gtk_tree_view_column_get_button (column);
11745
11746               gtk_widget_hide (button);
11747               gtk_widget_unmap (button);
11748             }
11749           gdk_window_hide (tree_view->priv->header_window);
11750         }
11751     }
11752
11753   gtk_widget_get_allocation (GTK_WIDGET (tree_view), &allocation);
11754   gtk_adjustment_configure (tree_view->priv->vadjustment,
11755                             gtk_adjustment_get_value (tree_view->priv->vadjustment),
11756                             0,
11757                             tree_view->priv->height,
11758                             gtk_adjustment_get_step_increment (tree_view->priv->vadjustment),
11759                             (allocation.height - gtk_tree_view_get_effective_header_height (tree_view)) / 2,
11760                             allocation.height - gtk_tree_view_get_effective_header_height (tree_view));
11761
11762   gtk_widget_queue_resize (GTK_WIDGET (tree_view));
11763
11764   g_object_notify (G_OBJECT (tree_view), "headers-visible");
11765 }
11766
11767 /**
11768  * gtk_tree_view_columns_autosize:
11769  * @tree_view: A #GtkTreeView.
11770  *
11771  * Resizes all columns to their optimal width. Only works after the
11772  * treeview has been realized.
11773  **/
11774 void
11775 gtk_tree_view_columns_autosize (GtkTreeView *tree_view)
11776 {
11777   gboolean dirty = FALSE;
11778   GList *list;
11779   GtkTreeViewColumn *column;
11780
11781   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
11782
11783   for (list = tree_view->priv->columns; list; list = list->next)
11784     {
11785       column = list->data;
11786       if (gtk_tree_view_column_get_sizing (column) == GTK_TREE_VIEW_COLUMN_AUTOSIZE)
11787         continue;
11788       _gtk_tree_view_column_cell_set_dirty (column, TRUE);
11789       dirty = TRUE;
11790     }
11791
11792   if (dirty)
11793     gtk_widget_queue_resize (GTK_WIDGET (tree_view));
11794 }
11795
11796 /**
11797  * gtk_tree_view_set_headers_clickable:
11798  * @tree_view: A #GtkTreeView.
11799  * @setting: %TRUE if the columns are clickable.
11800  *
11801  * Allow the column title buttons to be clicked.
11802  **/
11803 void
11804 gtk_tree_view_set_headers_clickable (GtkTreeView *tree_view,
11805                                      gboolean   setting)
11806 {
11807   GList *list;
11808
11809   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
11810
11811   for (list = tree_view->priv->columns; list; list = list->next)
11812     gtk_tree_view_column_set_clickable (GTK_TREE_VIEW_COLUMN (list->data), setting);
11813
11814   g_object_notify (G_OBJECT (tree_view), "headers-clickable");
11815 }
11816
11817
11818 /**
11819  * gtk_tree_view_get_headers_clickable:
11820  * @tree_view: A #GtkTreeView.
11821  *
11822  * Returns whether all header columns are clickable.
11823  *
11824  * Return value: %TRUE if all header columns are clickable, otherwise %FALSE
11825  *
11826  * Since: 2.10
11827  **/
11828 gboolean
11829 gtk_tree_view_get_headers_clickable (GtkTreeView *tree_view)
11830 {
11831   GList *list;
11832
11833   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), FALSE);
11834
11835   for (list = tree_view->priv->columns; list; list = list->next)
11836     if (!gtk_tree_view_column_get_clickable (GTK_TREE_VIEW_COLUMN (list->data)))
11837       return FALSE;
11838
11839   return TRUE;
11840 }
11841
11842 /**
11843  * gtk_tree_view_set_rules_hint:
11844  * @tree_view: a #GtkTreeView
11845  * @setting: %TRUE if the tree requires reading across rows
11846  *
11847  * This function tells GTK+ that the user interface for your
11848  * application requires users to read across tree rows and associate
11849  * cells with one another. By default, GTK+ will then render the tree
11850  * with alternating row colors. Do <emphasis>not</emphasis> use it
11851  * just because you prefer the appearance of the ruled tree; that's a
11852  * question for the theme. Some themes will draw tree rows in
11853  * alternating colors even when rules are turned off, and users who
11854  * prefer that appearance all the time can choose those themes. You
11855  * should call this function only as a <emphasis>semantic</emphasis>
11856  * hint to the theme engine that your tree makes alternating colors
11857  * useful from a functional standpoint (since it has lots of columns,
11858  * generally).
11859  *
11860  **/
11861 void
11862 gtk_tree_view_set_rules_hint (GtkTreeView  *tree_view,
11863                               gboolean      setting)
11864 {
11865   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
11866
11867   setting = setting != FALSE;
11868
11869   if (tree_view->priv->has_rules != setting)
11870     {
11871       tree_view->priv->has_rules = setting;
11872       gtk_widget_queue_draw (GTK_WIDGET (tree_view));
11873     }
11874
11875   g_object_notify (G_OBJECT (tree_view), "rules-hint");
11876 }
11877
11878 /**
11879  * gtk_tree_view_get_rules_hint:
11880  * @tree_view: a #GtkTreeView
11881  *
11882  * Gets the setting set by gtk_tree_view_set_rules_hint().
11883  *
11884  * Return value: %TRUE if rules are useful for the user of this tree
11885  **/
11886 gboolean
11887 gtk_tree_view_get_rules_hint (GtkTreeView  *tree_view)
11888 {
11889   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), FALSE);
11890
11891   return tree_view->priv->has_rules;
11892 }
11893
11894 /* Public Column functions
11895  */
11896
11897 /**
11898  * gtk_tree_view_append_column:
11899  * @tree_view: A #GtkTreeView.
11900  * @column: The #GtkTreeViewColumn to add.
11901  *
11902  * Appends @column to the list of columns. If @tree_view has "fixed_height"
11903  * mode enabled, then @column must have its "sizing" property set to be
11904  * GTK_TREE_VIEW_COLUMN_FIXED.
11905  *
11906  * Return value: The number of columns in @tree_view after appending.
11907  **/
11908 gint
11909 gtk_tree_view_append_column (GtkTreeView       *tree_view,
11910                              GtkTreeViewColumn *column)
11911 {
11912   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), -1);
11913   g_return_val_if_fail (GTK_IS_TREE_VIEW_COLUMN (column), -1);
11914   g_return_val_if_fail (gtk_tree_view_column_get_tree_view (column) == NULL, -1);
11915
11916   return gtk_tree_view_insert_column (tree_view, column, -1);
11917 }
11918
11919 void
11920 _gtk_tree_view_reset_header_styles (GtkTreeView *tree_view)
11921 {
11922   GList *columns;
11923
11924   for (columns = tree_view->priv->columns; columns; columns = columns->next)
11925     {
11926       GtkTreeViewColumn *column = columns->data;
11927       GtkWidget *header_widget;
11928
11929       if (!gtk_tree_view_column_get_visible (column))
11930         continue;
11931
11932       header_widget = gtk_tree_view_column_get_widget (column);
11933
11934       if (!header_widget)
11935         header_widget = gtk_tree_view_column_get_button (column);
11936
11937       _gtk_widget_invalidate_style_context (header_widget, GTK_CSS_CHANGE_PARENT_REGION);
11938     }
11939 }
11940
11941
11942 /**
11943  * gtk_tree_view_remove_column:
11944  * @tree_view: A #GtkTreeView.
11945  * @column: The #GtkTreeViewColumn to remove.
11946  *
11947  * Removes @column from @tree_view.
11948  *
11949  * Return value: The number of columns in @tree_view after removing.
11950  **/
11951 gint
11952 gtk_tree_view_remove_column (GtkTreeView       *tree_view,
11953                              GtkTreeViewColumn *column)
11954 {
11955   guint position;
11956
11957   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), -1);
11958   g_return_val_if_fail (GTK_IS_TREE_VIEW_COLUMN (column), -1);
11959   g_return_val_if_fail (gtk_tree_view_column_get_tree_view (column) == GTK_WIDGET (tree_view), -1);
11960
11961   if (tree_view->priv->focus_column == column)
11962     _gtk_tree_view_set_focus_column (tree_view, NULL);
11963
11964   if (tree_view->priv->edited_column == column)
11965     {
11966       gtk_tree_view_stop_editing (tree_view, TRUE);
11967
11968       /* no need to, but just to be sure ... */
11969       tree_view->priv->edited_column = NULL;
11970     }
11971
11972   if (tree_view->priv->expander_column == column)
11973     tree_view->priv->expander_column = NULL;
11974
11975   g_signal_handlers_disconnect_by_func (column,
11976                                         G_CALLBACK (column_sizing_notify),
11977                                         tree_view);
11978
11979   _gtk_tree_view_column_unset_tree_view (column);
11980
11981   position = g_list_index (tree_view->priv->columns, column);
11982
11983   tree_view->priv->columns = g_list_remove (tree_view->priv->columns, column);
11984   tree_view->priv->n_columns--;
11985
11986   if (gtk_widget_get_realized (GTK_WIDGET (tree_view)))
11987     {
11988       GList *list;
11989
11990       _gtk_tree_view_column_unrealize_button (column);
11991       for (list = tree_view->priv->columns; list; list = list->next)
11992         {
11993           GtkTreeViewColumn *tmp_column;
11994
11995           tmp_column = GTK_TREE_VIEW_COLUMN (list->data);
11996           if (gtk_tree_view_column_get_visible (tmp_column))
11997             _gtk_tree_view_column_cell_set_dirty (tmp_column, TRUE);
11998         }
11999
12000       if (tree_view->priv->n_columns == 0 &&
12001           gtk_tree_view_get_headers_visible (tree_view))
12002         gdk_window_hide (tree_view->priv->header_window);
12003
12004       gtk_widget_queue_resize (GTK_WIDGET (tree_view));
12005     }
12006
12007   _gtk_tree_view_reset_header_styles (tree_view);
12008
12009   _gtk_tree_view_accessible_remove_column (tree_view, column, position);
12010
12011   g_object_unref (column);
12012   g_signal_emit (tree_view, tree_view_signals[COLUMNS_CHANGED], 0);
12013
12014   return tree_view->priv->n_columns;
12015 }
12016
12017 /**
12018  * gtk_tree_view_insert_column:
12019  * @tree_view: A #GtkTreeView.
12020  * @column: The #GtkTreeViewColumn to be inserted.
12021  * @position: The position to insert @column in.
12022  *
12023  * This inserts the @column into the @tree_view at @position.  If @position is
12024  * -1, then the column is inserted at the end. If @tree_view has
12025  * "fixed_height" mode enabled, then @column must have its "sizing" property
12026  * set to be GTK_TREE_VIEW_COLUMN_FIXED.
12027  *
12028  * Return value: The number of columns in @tree_view after insertion.
12029  **/
12030 gint
12031 gtk_tree_view_insert_column (GtkTreeView       *tree_view,
12032                              GtkTreeViewColumn *column,
12033                              gint               position)
12034 {
12035   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), -1);
12036   g_return_val_if_fail (GTK_IS_TREE_VIEW_COLUMN (column), -1);
12037   g_return_val_if_fail (gtk_tree_view_column_get_tree_view (column) == NULL, -1);
12038
12039   if (tree_view->priv->fixed_height_mode)
12040     g_return_val_if_fail (gtk_tree_view_column_get_sizing (column)
12041                           == GTK_TREE_VIEW_COLUMN_FIXED, -1);
12042
12043   if (position < 0 || position > tree_view->priv->n_columns)
12044     position = tree_view->priv->n_columns;
12045
12046   g_object_ref_sink (column);
12047
12048   if (tree_view->priv->n_columns == 0 &&
12049       gtk_widget_get_realized (GTK_WIDGET (tree_view)) &&
12050       gtk_tree_view_get_headers_visible (tree_view))
12051     {
12052       gdk_window_show (tree_view->priv->header_window);
12053     }
12054
12055   g_signal_connect (column, "notify::sizing",
12056                     G_CALLBACK (column_sizing_notify), tree_view);
12057
12058   tree_view->priv->columns = g_list_insert (tree_view->priv->columns,
12059                                             column, position);
12060   tree_view->priv->n_columns++;
12061
12062   _gtk_tree_view_column_set_tree_view (column, tree_view);
12063
12064   if (gtk_widget_get_realized (GTK_WIDGET (tree_view)))
12065     {
12066       GList *list;
12067
12068       _gtk_tree_view_column_realize_button (column);
12069
12070       for (list = tree_view->priv->columns; list; list = list->next)
12071         {
12072           column = GTK_TREE_VIEW_COLUMN (list->data);
12073           if (gtk_tree_view_column_get_visible (column))
12074             _gtk_tree_view_column_cell_set_dirty (column, TRUE);
12075         }
12076       gtk_widget_queue_resize (GTK_WIDGET (tree_view));
12077     }
12078
12079   _gtk_tree_view_reset_header_styles (tree_view);
12080
12081   _gtk_tree_view_accessible_add_column (tree_view, column, position);
12082
12083   g_signal_emit (tree_view, tree_view_signals[COLUMNS_CHANGED], 0);
12084
12085   return tree_view->priv->n_columns;
12086 }
12087
12088 /**
12089  * gtk_tree_view_insert_column_with_attributes:
12090  * @tree_view: A #GtkTreeView
12091  * @position: The position to insert the new column in
12092  * @title: The title to set the header to
12093  * @cell: The #GtkCellRenderer
12094  * @...: A %NULL-terminated list of attributes
12095  *
12096  * Creates a new #GtkTreeViewColumn and inserts it into the @tree_view at
12097  * @position.  If @position is -1, then the newly created column is inserted at
12098  * the end.  The column is initialized with the attributes given. If @tree_view
12099  * has "fixed_height" mode enabled, then the new column will have its sizing
12100  * property set to be GTK_TREE_VIEW_COLUMN_FIXED.
12101  *
12102  * Return value: The number of columns in @tree_view after insertion.
12103  **/
12104 gint
12105 gtk_tree_view_insert_column_with_attributes (GtkTreeView     *tree_view,
12106                                              gint             position,
12107                                              const gchar     *title,
12108                                              GtkCellRenderer *cell,
12109                                              ...)
12110 {
12111   GtkTreeViewColumn *column;
12112   gchar *attribute;
12113   va_list args;
12114   gint column_id;
12115
12116   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), -1);
12117
12118   column = gtk_tree_view_column_new ();
12119   if (tree_view->priv->fixed_height_mode)
12120     gtk_tree_view_column_set_sizing (column, GTK_TREE_VIEW_COLUMN_FIXED);
12121
12122   gtk_tree_view_column_set_title (column, title);
12123   gtk_tree_view_column_pack_start (column, cell, TRUE);
12124
12125   va_start (args, cell);
12126
12127   attribute = va_arg (args, gchar *);
12128
12129   while (attribute != NULL)
12130     {
12131       column_id = va_arg (args, gint);
12132       gtk_tree_view_column_add_attribute (column, cell, attribute, column_id);
12133       attribute = va_arg (args, gchar *);
12134     }
12135
12136   va_end (args);
12137
12138   return gtk_tree_view_insert_column (tree_view, column, position);
12139 }
12140
12141 /**
12142  * gtk_tree_view_insert_column_with_data_func:
12143  * @tree_view: a #GtkTreeView
12144  * @position: Position to insert, -1 for append
12145  * @title: column title
12146  * @cell: cell renderer for column
12147  * @func: function to set attributes of cell renderer
12148  * @data: data for @func
12149  * @dnotify: destroy notifier for @data
12150  *
12151  * Convenience function that inserts a new column into the #GtkTreeView
12152  * with the given cell renderer and a #GtkTreeCellDataFunc to set cell renderer
12153  * attributes (normally using data from the model). See also
12154  * gtk_tree_view_column_set_cell_data_func(), gtk_tree_view_column_pack_start().
12155  * If @tree_view has "fixed_height" mode enabled, then the new column will have its
12156  * "sizing" property set to be GTK_TREE_VIEW_COLUMN_FIXED.
12157  *
12158  * Return value: number of columns in the tree view post-insert
12159  **/
12160 gint
12161 gtk_tree_view_insert_column_with_data_func  (GtkTreeView               *tree_view,
12162                                              gint                       position,
12163                                              const gchar               *title,
12164                                              GtkCellRenderer           *cell,
12165                                              GtkTreeCellDataFunc        func,
12166                                              gpointer                   data,
12167                                              GDestroyNotify             dnotify)
12168 {
12169   GtkTreeViewColumn *column;
12170
12171   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), -1);
12172
12173   column = gtk_tree_view_column_new ();
12174   if (tree_view->priv->fixed_height_mode)
12175     gtk_tree_view_column_set_sizing (column, GTK_TREE_VIEW_COLUMN_FIXED);
12176
12177   gtk_tree_view_column_set_title (column, title);
12178   gtk_tree_view_column_pack_start (column, cell, TRUE);
12179   gtk_tree_view_column_set_cell_data_func (column, cell, func, data, dnotify);
12180
12181   return gtk_tree_view_insert_column (tree_view, column, position);
12182 }
12183
12184 /**
12185  * gtk_tree_view_get_n_columns:
12186  * @tree_view: a #GtkTreeView
12187  *
12188  * Queries the number of columns in the given @tree_view.
12189  *
12190  * Returns: The number of columns in the @tree_view
12191  *
12192  * Since: 3.4
12193  **/
12194 guint
12195 gtk_tree_view_get_n_columns (GtkTreeView *tree_view)
12196 {
12197   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), 0);
12198
12199   return tree_view->priv->n_columns;
12200 }
12201
12202 /**
12203  * gtk_tree_view_get_column:
12204  * @tree_view: A #GtkTreeView.
12205  * @n: The position of the column, counting from 0.
12206  *
12207  * Gets the #GtkTreeViewColumn at the given position in the #tree_view.
12208  *
12209  * Return value: (transfer none): The #GtkTreeViewColumn, or %NULL if the
12210  *     position is outside the range of columns.
12211  **/
12212 GtkTreeViewColumn *
12213 gtk_tree_view_get_column (GtkTreeView *tree_view,
12214                           gint         n)
12215 {
12216   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), NULL);
12217
12218   if (n < 0 || n >= tree_view->priv->n_columns)
12219     return NULL;
12220
12221   if (tree_view->priv->columns == NULL)
12222     return NULL;
12223
12224   return GTK_TREE_VIEW_COLUMN (g_list_nth (tree_view->priv->columns, n)->data);
12225 }
12226
12227 /**
12228  * gtk_tree_view_get_columns:
12229  * @tree_view: A #GtkTreeView
12230  *
12231  * Returns a #GList of all the #GtkTreeViewColumn s currently in @tree_view.
12232  * The returned list must be freed with g_list_free ().
12233  *
12234  * Return value: (element-type GtkTreeViewColumn) (transfer container): A list of #GtkTreeViewColumn s
12235  **/
12236 GList *
12237 gtk_tree_view_get_columns (GtkTreeView *tree_view)
12238 {
12239   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), NULL);
12240
12241   return g_list_copy (tree_view->priv->columns);
12242 }
12243
12244 /**
12245  * gtk_tree_view_move_column_after:
12246  * @tree_view: A #GtkTreeView
12247  * @column: The #GtkTreeViewColumn to be moved.
12248  * @base_column: (allow-none): The #GtkTreeViewColumn to be moved relative to, or %NULL.
12249  *
12250  * Moves @column to be after to @base_column.  If @base_column is %NULL, then
12251  * @column is placed in the first position.
12252  **/
12253 void
12254 gtk_tree_view_move_column_after (GtkTreeView       *tree_view,
12255                                  GtkTreeViewColumn *column,
12256                                  GtkTreeViewColumn *base_column)
12257 {
12258   GList *column_list_el, *base_el = NULL;
12259
12260   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
12261
12262   column_list_el = g_list_find (tree_view->priv->columns, column);
12263   g_return_if_fail (column_list_el != NULL);
12264
12265   if (base_column)
12266     {
12267       base_el = g_list_find (tree_view->priv->columns, base_column);
12268       g_return_if_fail (base_el != NULL);
12269     }
12270
12271   if (column_list_el->prev == base_el)
12272     return;
12273
12274   tree_view->priv->columns = g_list_remove_link (tree_view->priv->columns, column_list_el);
12275   if (base_el == NULL)
12276     {
12277       column_list_el->prev = NULL;
12278       column_list_el->next = tree_view->priv->columns;
12279       if (column_list_el->next)
12280         column_list_el->next->prev = column_list_el;
12281       tree_view->priv->columns = column_list_el;
12282     }
12283   else
12284     {
12285       column_list_el->prev = base_el;
12286       column_list_el->next = base_el->next;
12287       if (column_list_el->next)
12288         column_list_el->next->prev = column_list_el;
12289       base_el->next = column_list_el;
12290     }
12291
12292   if (gtk_widget_get_realized (GTK_WIDGET (tree_view)))
12293     {
12294       gtk_widget_queue_resize (GTK_WIDGET (tree_view));
12295       gtk_tree_view_size_allocate_columns (GTK_WIDGET (tree_view), NULL);
12296     }
12297
12298   _gtk_tree_view_reset_header_styles (tree_view);
12299
12300   _gtk_tree_view_accessible_reorder_column (tree_view, column);
12301
12302   g_signal_emit (tree_view, tree_view_signals[COLUMNS_CHANGED], 0);
12303 }
12304
12305 /**
12306  * gtk_tree_view_set_expander_column:
12307  * @tree_view: A #GtkTreeView
12308  * @column: %NULL, or the column to draw the expander arrow at.
12309  *
12310  * Sets the column to draw the expander arrow at. It must be in @tree_view.
12311  * If @column is %NULL, then the expander arrow is always at the first
12312  * visible column.
12313  *
12314  * If you do not want expander arrow to appear in your tree, set the
12315  * expander column to a hidden column.
12316  **/
12317 void
12318 gtk_tree_view_set_expander_column (GtkTreeView       *tree_view,
12319                                    GtkTreeViewColumn *column)
12320 {
12321   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
12322   g_return_if_fail (column == NULL || GTK_IS_TREE_VIEW_COLUMN (column));
12323   g_return_if_fail (column == NULL || gtk_tree_view_column_get_tree_view (column) == GTK_WIDGET (tree_view));
12324
12325   if (tree_view->priv->expander_column != column)
12326     {
12327       tree_view->priv->expander_column = column;
12328       g_object_notify (G_OBJECT (tree_view), "expander-column");
12329     }
12330 }
12331
12332 /**
12333  * gtk_tree_view_get_expander_column:
12334  * @tree_view: A #GtkTreeView
12335  *
12336  * Returns the column that is the current expander column.
12337  * This column has the expander arrow drawn next to it.
12338  *
12339  * Return value: (transfer none): The expander column.
12340  **/
12341 GtkTreeViewColumn *
12342 gtk_tree_view_get_expander_column (GtkTreeView *tree_view)
12343 {
12344   GList *list;
12345
12346   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), NULL);
12347
12348   for (list = tree_view->priv->columns; list; list = list->next)
12349     if (gtk_tree_view_is_expander_column (tree_view, GTK_TREE_VIEW_COLUMN (list->data)))
12350       return (GtkTreeViewColumn *) list->data;
12351   return NULL;
12352 }
12353
12354
12355 /**
12356  * gtk_tree_view_set_column_drag_function:
12357  * @tree_view: A #GtkTreeView.
12358  * @func: (allow-none): A function to determine which columns are reorderable, or %NULL.
12359  * @user_data: (allow-none): User data to be passed to @func, or %NULL
12360  * @destroy: (allow-none): Destroy notifier for @user_data, or %NULL
12361  *
12362  * Sets a user function for determining where a column may be dropped when
12363  * dragged.  This function is called on every column pair in turn at the
12364  * beginning of a column drag to determine where a drop can take place.  The
12365  * arguments passed to @func are: the @tree_view, the #GtkTreeViewColumn being
12366  * dragged, the two #GtkTreeViewColumn s determining the drop spot, and
12367  * @user_data.  If either of the #GtkTreeViewColumn arguments for the drop spot
12368  * are %NULL, then they indicate an edge.  If @func is set to be %NULL, then
12369  * @tree_view reverts to the default behavior of allowing all columns to be
12370  * dropped everywhere.
12371  **/
12372 void
12373 gtk_tree_view_set_column_drag_function (GtkTreeView               *tree_view,
12374                                         GtkTreeViewColumnDropFunc  func,
12375                                         gpointer                   user_data,
12376                                         GDestroyNotify             destroy)
12377 {
12378   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
12379
12380   if (tree_view->priv->column_drop_func_data_destroy)
12381     tree_view->priv->column_drop_func_data_destroy (tree_view->priv->column_drop_func_data);
12382
12383   tree_view->priv->column_drop_func = func;
12384   tree_view->priv->column_drop_func_data = user_data;
12385   tree_view->priv->column_drop_func_data_destroy = destroy;
12386 }
12387
12388 /**
12389  * gtk_tree_view_scroll_to_point:
12390  * @tree_view: a #GtkTreeView
12391  * @tree_x: X coordinate of new top-left pixel of visible area, or -1
12392  * @tree_y: Y coordinate of new top-left pixel of visible area, or -1
12393  *
12394  * Scrolls the tree view such that the top-left corner of the visible
12395  * area is @tree_x, @tree_y, where @tree_x and @tree_y are specified
12396  * in tree coordinates.  The @tree_view must be realized before
12397  * this function is called.  If it isn't, you probably want to be
12398  * using gtk_tree_view_scroll_to_cell().
12399  *
12400  * If either @tree_x or @tree_y are -1, then that direction isn't scrolled.
12401  **/
12402 void
12403 gtk_tree_view_scroll_to_point (GtkTreeView *tree_view,
12404                                gint         tree_x,
12405                                gint         tree_y)
12406 {
12407   GtkAdjustment *hadj;
12408   GtkAdjustment *vadj;
12409
12410   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
12411   g_return_if_fail (gtk_widget_get_realized (GTK_WIDGET (tree_view)));
12412
12413   hadj = tree_view->priv->hadjustment;
12414   vadj = tree_view->priv->vadjustment;
12415
12416   if (tree_x != -1)
12417     gtk_adjustment_set_value (hadj, tree_x);
12418   if (tree_y != -1)
12419     gtk_adjustment_set_value (vadj, tree_y);
12420 }
12421
12422 /**
12423  * gtk_tree_view_scroll_to_cell:
12424  * @tree_view: A #GtkTreeView.
12425  * @path: (allow-none): The path of the row to move to, or %NULL.
12426  * @column: (allow-none): The #GtkTreeViewColumn to move horizontally to, or %NULL.
12427  * @use_align: whether to use alignment arguments, or %FALSE.
12428  * @row_align: The vertical alignment of the row specified by @path.
12429  * @col_align: The horizontal alignment of the column specified by @column.
12430  *
12431  * Moves the alignments of @tree_view to the position specified by @column and
12432  * @path.  If @column is %NULL, then no horizontal scrolling occurs.  Likewise,
12433  * if @path is %NULL no vertical scrolling occurs.  At a minimum, one of @column
12434  * or @path need to be non-%NULL.  @row_align determines where the row is
12435  * placed, and @col_align determines where @column is placed.  Both are expected
12436  * to be between 0.0 and 1.0. 0.0 means left/top alignment, 1.0 means
12437  * right/bottom alignment, 0.5 means center.
12438  *
12439  * If @use_align is %FALSE, then the alignment arguments are ignored, and the
12440  * tree does the minimum amount of work to scroll the cell onto the screen.
12441  * This means that the cell will be scrolled to the edge closest to its current
12442  * position.  If the cell is currently visible on the screen, nothing is done.
12443  *
12444  * This function only works if the model is set, and @path is a valid row on the
12445  * model.  If the model changes before the @tree_view is realized, the centered
12446  * path will be modified to reflect this change.
12447  **/
12448 void
12449 gtk_tree_view_scroll_to_cell (GtkTreeView       *tree_view,
12450                               GtkTreePath       *path,
12451                               GtkTreeViewColumn *column,
12452                               gboolean           use_align,
12453                               gfloat             row_align,
12454                               gfloat             col_align)
12455 {
12456   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
12457   g_return_if_fail (tree_view->priv->model != NULL);
12458   g_return_if_fail (tree_view->priv->tree != NULL);
12459   g_return_if_fail (row_align >= 0.0 && row_align <= 1.0);
12460   g_return_if_fail (col_align >= 0.0 && col_align <= 1.0);
12461   g_return_if_fail (path != NULL || column != NULL);
12462
12463 #if 0
12464   g_print ("gtk_tree_view_scroll_to_cell:\npath: %s\ncolumn: %s\nuse_align: %d\nrow_align: %f\ncol_align: %f\n",
12465            gtk_tree_path_to_string (path), column?"non-null":"null", use_align, row_align, col_align);
12466 #endif
12467   row_align = CLAMP (row_align, 0.0, 1.0);
12468   col_align = CLAMP (col_align, 0.0, 1.0);
12469
12470
12471   /* Note: Despite the benefits that come from having one code path for the
12472    * scrolling code, we short-circuit validate_visible_area's immplementation as
12473    * it is much slower than just going to the point.
12474    */
12475   if (!gtk_widget_get_visible (GTK_WIDGET (tree_view)) ||
12476       !gtk_widget_get_realized (GTK_WIDGET (tree_view)) ||
12477       _gtk_widget_get_alloc_needed (GTK_WIDGET (tree_view)) ||
12478       GTK_RBNODE_FLAG_SET (tree_view->priv->tree->root, GTK_RBNODE_DESCENDANTS_INVALID))
12479     {
12480       if (tree_view->priv->scroll_to_path)
12481         gtk_tree_row_reference_free (tree_view->priv->scroll_to_path);
12482
12483       tree_view->priv->scroll_to_path = NULL;
12484       tree_view->priv->scroll_to_column = NULL;
12485
12486       if (path)
12487         tree_view->priv->scroll_to_path = gtk_tree_row_reference_new_proxy (G_OBJECT (tree_view), tree_view->priv->model, path);
12488       if (column)
12489         tree_view->priv->scroll_to_column = column;
12490       tree_view->priv->scroll_to_use_align = use_align;
12491       tree_view->priv->scroll_to_row_align = row_align;
12492       tree_view->priv->scroll_to_col_align = col_align;
12493
12494       install_presize_handler (tree_view);
12495     }
12496   else
12497     {
12498       GdkRectangle cell_rect;
12499       GdkRectangle vis_rect;
12500       gint dest_x, dest_y;
12501
12502       gtk_tree_view_get_background_area (tree_view, path, column, &cell_rect);
12503       gtk_tree_view_get_visible_rect (tree_view, &vis_rect);
12504
12505       cell_rect.y = TREE_WINDOW_Y_TO_RBTREE_Y (tree_view, cell_rect.y);
12506
12507       dest_x = vis_rect.x;
12508       dest_y = vis_rect.y;
12509
12510       if (column)
12511         {
12512           if (use_align)
12513             {
12514               dest_x = cell_rect.x - ((vis_rect.width - cell_rect.width) * col_align);
12515             }
12516           else
12517             {
12518               if (cell_rect.x < vis_rect.x)
12519                 dest_x = cell_rect.x;
12520               if (cell_rect.x + cell_rect.width > vis_rect.x + vis_rect.width)
12521                 dest_x = cell_rect.x + cell_rect.width - vis_rect.width;
12522             }
12523         }
12524
12525       if (path)
12526         {
12527           if (use_align)
12528             {
12529               dest_y = cell_rect.y - ((vis_rect.height - cell_rect.height) * row_align);
12530               dest_y = MAX (dest_y, 0);
12531             }
12532           else
12533             {
12534               if (cell_rect.y < vis_rect.y)
12535                 dest_y = cell_rect.y;
12536               if (cell_rect.y + cell_rect.height > vis_rect.y + vis_rect.height)
12537                 dest_y = cell_rect.y + cell_rect.height - vis_rect.height;
12538             }
12539         }
12540
12541       gtk_tree_view_scroll_to_point (tree_view, dest_x, dest_y);
12542     }
12543 }
12544
12545 /**
12546  * gtk_tree_view_row_activated:
12547  * @tree_view: A #GtkTreeView
12548  * @path: The #GtkTreePath to be activated.
12549  * @column: The #GtkTreeViewColumn to be activated.
12550  *
12551  * Activates the cell determined by @path and @column.
12552  **/
12553 void
12554 gtk_tree_view_row_activated (GtkTreeView       *tree_view,
12555                              GtkTreePath       *path,
12556                              GtkTreeViewColumn *column)
12557 {
12558   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
12559
12560   g_signal_emit (tree_view, tree_view_signals[ROW_ACTIVATED], 0, path, column);
12561 }
12562
12563
12564 static void
12565 gtk_tree_view_expand_all_emission_helper (GtkRBTree *tree,
12566                                           GtkRBNode *node,
12567                                           gpointer   data)
12568 {
12569   GtkTreeView *tree_view = data;
12570
12571   if ((node->flags & GTK_RBNODE_IS_PARENT) == GTK_RBNODE_IS_PARENT &&
12572       node->children)
12573     {
12574       GtkTreePath *path;
12575       GtkTreeIter iter;
12576
12577       path = _gtk_tree_path_new_from_rbtree (tree, node);
12578       gtk_tree_model_get_iter (tree_view->priv->model, &iter, path);
12579
12580       g_signal_emit (tree_view, tree_view_signals[ROW_EXPANDED], 0, &iter, path);
12581
12582       gtk_tree_path_free (path);
12583     }
12584
12585   if (node->children)
12586     _gtk_rbtree_traverse (node->children,
12587                           node->children->root,
12588                           G_PRE_ORDER,
12589                           gtk_tree_view_expand_all_emission_helper,
12590                           tree_view);
12591 }
12592
12593 /**
12594  * gtk_tree_view_expand_all:
12595  * @tree_view: A #GtkTreeView.
12596  *
12597  * Recursively expands all nodes in the @tree_view.
12598  **/
12599 void
12600 gtk_tree_view_expand_all (GtkTreeView *tree_view)
12601 {
12602   GtkTreePath *path;
12603   GtkRBTree *tree;
12604   GtkRBNode *node;
12605
12606   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
12607
12608   if (tree_view->priv->tree == NULL)
12609     return;
12610
12611   path = gtk_tree_path_new_first ();
12612   _gtk_tree_view_find_node (tree_view, path, &tree, &node);
12613
12614   while (node)
12615     {
12616       gtk_tree_view_real_expand_row (tree_view, path, tree, node, TRUE, FALSE);
12617       node = _gtk_rbtree_next (tree, node);
12618       gtk_tree_path_next (path);
12619   }
12620
12621   gtk_tree_path_free (path);
12622 }
12623
12624 /**
12625  * gtk_tree_view_collapse_all:
12626  * @tree_view: A #GtkTreeView.
12627  *
12628  * Recursively collapses all visible, expanded nodes in @tree_view.
12629  **/
12630 void
12631 gtk_tree_view_collapse_all (GtkTreeView *tree_view)
12632 {
12633   GtkRBTree *tree;
12634   GtkRBNode *node;
12635   GtkTreePath *path;
12636   gint *indices;
12637
12638   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
12639
12640   if (tree_view->priv->tree == NULL)
12641     return;
12642
12643   path = gtk_tree_path_new ();
12644   gtk_tree_path_down (path);
12645   indices = gtk_tree_path_get_indices (path);
12646
12647   tree = tree_view->priv->tree;
12648   node = _gtk_rbtree_first (tree);
12649
12650   while (node)
12651     {
12652       if (node->children)
12653         gtk_tree_view_real_collapse_row (tree_view, path, tree, node, FALSE);
12654       indices[0]++;
12655       node = _gtk_rbtree_next (tree, node);
12656     }
12657
12658   gtk_tree_path_free (path);
12659 }
12660
12661 /**
12662  * gtk_tree_view_expand_to_path:
12663  * @tree_view: A #GtkTreeView.
12664  * @path: path to a row.
12665  *
12666  * Expands the row at @path. This will also expand all parent rows of
12667  * @path as necessary.
12668  *
12669  * Since: 2.2
12670  **/
12671 void
12672 gtk_tree_view_expand_to_path (GtkTreeView *tree_view,
12673                               GtkTreePath *path)
12674 {
12675   gint i, depth;
12676   gint *indices;
12677   GtkTreePath *tmp;
12678
12679   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
12680   g_return_if_fail (path != NULL);
12681
12682   depth = gtk_tree_path_get_depth (path);
12683   indices = gtk_tree_path_get_indices (path);
12684
12685   tmp = gtk_tree_path_new ();
12686   g_return_if_fail (tmp != NULL);
12687
12688   for (i = 0; i < depth; i++)
12689     {
12690       gtk_tree_path_append_index (tmp, indices[i]);
12691       gtk_tree_view_expand_row (tree_view, tmp, FALSE);
12692     }
12693
12694   gtk_tree_path_free (tmp);
12695 }
12696
12697 /* FIXME the bool return values for expand_row and collapse_row are
12698  * not analagous; they should be TRUE if the row had children and
12699  * was not already in the requested state.
12700  */
12701
12702
12703 static gboolean
12704 gtk_tree_view_real_expand_row (GtkTreeView *tree_view,
12705                                GtkTreePath *path,
12706                                GtkRBTree   *tree,
12707                                GtkRBNode   *node,
12708                                gboolean     open_all,
12709                                gboolean     animate)
12710 {
12711   GtkTreeIter iter;
12712   GtkTreeIter temp;
12713   gboolean expand;
12714
12715   if (animate)
12716     g_object_get (gtk_widget_get_settings (GTK_WIDGET (tree_view)),
12717                   "gtk-enable-animations", &animate,
12718                   NULL);
12719
12720   remove_auto_expand_timeout (tree_view);
12721
12722   if (node->children && !open_all)
12723     return FALSE;
12724
12725   if (! GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_PARENT))
12726     return FALSE;
12727
12728   gtk_tree_model_get_iter (tree_view->priv->model, &iter, path);
12729   if (! gtk_tree_model_iter_has_child (tree_view->priv->model, &iter))
12730     return FALSE;
12731
12732
12733    if (node->children && open_all)
12734     {
12735       gboolean retval = FALSE;
12736       GtkTreePath *tmp_path = gtk_tree_path_copy (path);
12737
12738       gtk_tree_path_append_index (tmp_path, 0);
12739       tree = node->children;
12740       node = _gtk_rbtree_first (tree);
12741       /* try to expand the children */
12742       do
12743         {
12744          gboolean t;
12745          t = gtk_tree_view_real_expand_row (tree_view, tmp_path, tree, node,
12746                                             TRUE, animate);
12747          if (t)
12748            retval = TRUE;
12749
12750          gtk_tree_path_next (tmp_path);
12751          node = _gtk_rbtree_next (tree, node);
12752        }
12753       while (node != NULL);
12754
12755       gtk_tree_path_free (tmp_path);
12756
12757       return retval;
12758     }
12759
12760   g_signal_emit (tree_view, tree_view_signals[TEST_EXPAND_ROW], 0, &iter, path, &expand);
12761
12762   if (!gtk_tree_model_iter_has_child (tree_view->priv->model, &iter))
12763     return FALSE;
12764
12765   if (expand)
12766     return FALSE;
12767
12768   node->children = _gtk_rbtree_new ();
12769   node->children->parent_tree = tree;
12770   node->children->parent_node = node;
12771
12772   gtk_tree_model_iter_children (tree_view->priv->model, &temp, &iter);
12773
12774   gtk_tree_view_build_tree (tree_view,
12775                             node->children,
12776                             &temp,
12777                             gtk_tree_path_get_depth (path) + 1,
12778                             open_all);
12779
12780   _gtk_tree_view_accessible_add (tree_view, node->children, NULL);
12781   _gtk_tree_view_accessible_add_state (tree_view,
12782                                        tree, node,
12783                                        GTK_CELL_RENDERER_EXPANDED);
12784
12785   install_presize_handler (tree_view);
12786
12787   g_signal_emit (tree_view, tree_view_signals[ROW_EXPANDED], 0, &iter, path);
12788   if (open_all && node->children)
12789     {
12790       _gtk_rbtree_traverse (node->children,
12791                             node->children->root,
12792                             G_PRE_ORDER,
12793                             gtk_tree_view_expand_all_emission_helper,
12794                             tree_view);
12795     }
12796   return TRUE;
12797 }
12798
12799
12800 /**
12801  * gtk_tree_view_expand_row:
12802  * @tree_view: a #GtkTreeView
12803  * @path: path to a row
12804  * @open_all: whether to recursively expand, or just expand immediate children
12805  *
12806  * Opens the row so its children are visible.
12807  *
12808  * Return value: %TRUE if the row existed and had children
12809  **/
12810 gboolean
12811 gtk_tree_view_expand_row (GtkTreeView *tree_view,
12812                           GtkTreePath *path,
12813                           gboolean     open_all)
12814 {
12815   GtkRBTree *tree;
12816   GtkRBNode *node;
12817
12818   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), FALSE);
12819   g_return_val_if_fail (tree_view->priv->model != NULL, FALSE);
12820   g_return_val_if_fail (path != NULL, FALSE);
12821
12822   if (_gtk_tree_view_find_node (tree_view,
12823                                 path,
12824                                 &tree,
12825                                 &node))
12826     return FALSE;
12827
12828   if (tree != NULL)
12829     return gtk_tree_view_real_expand_row (tree_view, path, tree, node, open_all, FALSE);
12830   else
12831     return FALSE;
12832 }
12833
12834 static gboolean
12835 gtk_tree_view_real_collapse_row (GtkTreeView *tree_view,
12836                                  GtkTreePath *path,
12837                                  GtkRBTree   *tree,
12838                                  GtkRBNode   *node,
12839                                  gboolean     animate)
12840 {
12841   GtkTreeIter iter;
12842   GtkTreeIter children;
12843   gboolean collapse;
12844   gint x, y;
12845   GList *list;
12846   GdkWindow *child;
12847   gboolean selection_changed, cursor_changed;
12848
12849   if (animate)
12850     g_object_get (gtk_widget_get_settings (GTK_WIDGET (tree_view)),
12851                   "gtk-enable-animations", &animate,
12852                   NULL);
12853
12854   remove_auto_expand_timeout (tree_view);
12855
12856   if (node->children == NULL)
12857     return FALSE;
12858   gtk_tree_model_get_iter (tree_view->priv->model, &iter, path);
12859
12860   g_signal_emit (tree_view, tree_view_signals[TEST_COLLAPSE_ROW], 0, &iter, path, &collapse);
12861
12862   if (collapse)
12863     return FALSE;
12864
12865   /* if the prelighted node is a child of us, we want to unprelight it.  We have
12866    * a chance to prelight the correct node below */
12867
12868   if (tree_view->priv->prelight_tree)
12869     {
12870       GtkRBTree *parent_tree;
12871       GtkRBNode *parent_node;
12872
12873       parent_tree = tree_view->priv->prelight_tree->parent_tree;
12874       parent_node = tree_view->priv->prelight_tree->parent_node;
12875       while (parent_tree)
12876         {
12877           if (parent_tree == tree && parent_node == node)
12878             {
12879               ensure_unprelighted (tree_view);
12880               break;
12881             }
12882           parent_node = parent_tree->parent_node;
12883           parent_tree = parent_tree->parent_tree;
12884         }
12885     }
12886
12887   TREE_VIEW_INTERNAL_ASSERT (gtk_tree_model_iter_children (tree_view->priv->model, &children, &iter), FALSE);
12888
12889   for (list = tree_view->priv->columns; list; list = list->next)
12890     {
12891       GtkTreeViewColumn *column = list->data;
12892
12893       if (gtk_tree_view_column_get_visible (column) == FALSE)
12894         continue;
12895       if (gtk_tree_view_column_get_sizing (column) == GTK_TREE_VIEW_COLUMN_AUTOSIZE)
12896         _gtk_tree_view_column_cell_set_dirty (column, TRUE);
12897     }
12898
12899   if (tree_view->priv->destroy_count_func)
12900     {
12901       GtkTreePath *child_path;
12902       gint child_count = 0;
12903       child_path = gtk_tree_path_copy (path);
12904       gtk_tree_path_down (child_path);
12905       if (node->children)
12906         _gtk_rbtree_traverse (node->children, node->children->root, G_POST_ORDER, count_children_helper, &child_count);
12907       tree_view->priv->destroy_count_func (tree_view, child_path, child_count, tree_view->priv->destroy_count_data);
12908       gtk_tree_path_free (child_path);
12909     }
12910
12911   if (tree_view->priv->cursor_node)
12912     {
12913       cursor_changed = (node->children == tree_view->priv->cursor_tree)
12914                        || _gtk_rbtree_contains (node->children, tree_view->priv->cursor_tree);
12915     }
12916   else
12917     cursor_changed = FALSE;
12918
12919   if (gtk_tree_row_reference_valid (tree_view->priv->anchor))
12920     {
12921       GtkTreePath *anchor_path = gtk_tree_row_reference_get_path (tree_view->priv->anchor);
12922       if (gtk_tree_path_is_ancestor (path, anchor_path))
12923         {
12924           gtk_tree_row_reference_free (tree_view->priv->anchor);
12925           tree_view->priv->anchor = NULL;
12926         }
12927       gtk_tree_path_free (anchor_path);
12928     }
12929
12930   selection_changed = gtk_tree_view_unref_and_check_selection_tree (tree_view, node->children);
12931
12932   /* Stop a pending double click */
12933   tree_view->priv->last_button_x = -1;
12934   tree_view->priv->last_button_y = -1;
12935
12936   _gtk_tree_view_accessible_remove (tree_view, node->children, NULL);
12937   _gtk_tree_view_accessible_remove_state (tree_view,
12938                                           tree, node,
12939                                           GTK_CELL_RENDERER_EXPANDED);
12940
12941   _gtk_rbtree_remove (node->children);
12942
12943   if (cursor_changed)
12944     gtk_tree_view_real_set_cursor (tree_view, path, CLEAR_AND_SELECT | CURSOR_INVALID);
12945   if (selection_changed)
12946     g_signal_emit_by_name (tree_view->priv->selection, "changed");
12947
12948   if (gtk_widget_get_mapped (GTK_WIDGET (tree_view)))
12949     {
12950       gtk_widget_queue_resize (GTK_WIDGET (tree_view));
12951     }
12952
12953   g_signal_emit (tree_view, tree_view_signals[ROW_COLLAPSED], 0, &iter, path);
12954
12955   if (gtk_widget_get_mapped (GTK_WIDGET (tree_view)))
12956     {
12957       /* now that we've collapsed all rows, we want to try to set the prelight
12958        * again. To do this, we fake a motion event and send it to ourselves. */
12959
12960       child = gdk_window_get_device_position (gdk_window_get_parent (tree_view->priv->bin_window),
12961                                               gdk_device_manager_get_client_pointer (
12962                                                 gdk_display_get_device_manager (
12963                                                   gtk_widget_get_display (GTK_WIDGET (tree_view)))),
12964                                               &x, &y, NULL);
12965       if (child == tree_view->priv->bin_window)
12966         {
12967           GdkEventMotion event;
12968           gint child_x, child_y;
12969
12970           gdk_window_get_position (child, &child_x, &child_y);
12971
12972           event.window = tree_view->priv->bin_window;
12973           event.x = x - child_x;
12974           event.y = y - child_y;
12975
12976           /* despite the fact this isn't a real event, I'm almost positive it will
12977            * never trigger a drag event.  maybe_drag is the only function that uses
12978            * more than just event.x and event.y. */
12979           gtk_tree_view_motion_bin_window (GTK_WIDGET (tree_view), &event);
12980         }
12981     }
12982
12983   return TRUE;
12984 }
12985
12986 /**
12987  * gtk_tree_view_collapse_row:
12988  * @tree_view: a #GtkTreeView
12989  * @path: path to a row in the @tree_view
12990  *
12991  * Collapses a row (hides its child rows, if they exist).
12992  *
12993  * Return value: %TRUE if the row was collapsed.
12994  **/
12995 gboolean
12996 gtk_tree_view_collapse_row (GtkTreeView *tree_view,
12997                             GtkTreePath *path)
12998 {
12999   GtkRBTree *tree;
13000   GtkRBNode *node;
13001
13002   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), FALSE);
13003   g_return_val_if_fail (tree_view->priv->tree != NULL, FALSE);
13004   g_return_val_if_fail (path != NULL, FALSE);
13005
13006   if (_gtk_tree_view_find_node (tree_view,
13007                                 path,
13008                                 &tree,
13009                                 &node))
13010     return FALSE;
13011
13012   if (tree == NULL || node->children == NULL)
13013     return FALSE;
13014
13015   return gtk_tree_view_real_collapse_row (tree_view, path, tree, node, FALSE);
13016 }
13017
13018 static void
13019 gtk_tree_view_map_expanded_rows_helper (GtkTreeView            *tree_view,
13020                                         GtkRBTree              *tree,
13021                                         GtkTreePath            *path,
13022                                         GtkTreeViewMappingFunc  func,
13023                                         gpointer                user_data)
13024 {
13025   GtkRBNode *node;
13026
13027   if (tree == NULL || tree->root == NULL)
13028     return;
13029
13030   node = _gtk_rbtree_first (tree);
13031
13032   while (node)
13033     {
13034       if (node->children)
13035         {
13036           (* func) (tree_view, path, user_data);
13037           gtk_tree_path_down (path);
13038           gtk_tree_view_map_expanded_rows_helper (tree_view, node->children, path, func, user_data);
13039           gtk_tree_path_up (path);
13040         }
13041       gtk_tree_path_next (path);
13042       node = _gtk_rbtree_next (tree, node);
13043     }
13044 }
13045
13046 /**
13047  * gtk_tree_view_map_expanded_rows:
13048  * @tree_view: A #GtkTreeView
13049  * @func: (scope call): A function to be called
13050  * @data: User data to be passed to the function.
13051  *
13052  * Calls @func on all expanded rows.
13053  **/
13054 void
13055 gtk_tree_view_map_expanded_rows (GtkTreeView            *tree_view,
13056                                  GtkTreeViewMappingFunc  func,
13057                                  gpointer                user_data)
13058 {
13059   GtkTreePath *path;
13060
13061   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
13062   g_return_if_fail (func != NULL);
13063
13064   path = gtk_tree_path_new_first ();
13065
13066   gtk_tree_view_map_expanded_rows_helper (tree_view,
13067                                           tree_view->priv->tree,
13068                                           path, func, user_data);
13069
13070   gtk_tree_path_free (path);
13071 }
13072
13073 /**
13074  * gtk_tree_view_row_expanded:
13075  * @tree_view: A #GtkTreeView.
13076  * @path: A #GtkTreePath to test expansion state.
13077  *
13078  * Returns %TRUE if the node pointed to by @path is expanded in @tree_view.
13079  *
13080  * Return value: %TRUE if #path is expanded.
13081  **/
13082 gboolean
13083 gtk_tree_view_row_expanded (GtkTreeView *tree_view,
13084                             GtkTreePath *path)
13085 {
13086   GtkRBTree *tree;
13087   GtkRBNode *node;
13088
13089   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), FALSE);
13090   g_return_val_if_fail (path != NULL, FALSE);
13091
13092   _gtk_tree_view_find_node (tree_view, path, &tree, &node);
13093
13094   if (node == NULL)
13095     return FALSE;
13096
13097   return (node->children != NULL);
13098 }
13099
13100 /**
13101  * gtk_tree_view_get_reorderable:
13102  * @tree_view: a #GtkTreeView
13103  *
13104  * Retrieves whether the user can reorder the tree via drag-and-drop. See
13105  * gtk_tree_view_set_reorderable().
13106  *
13107  * Return value: %TRUE if the tree can be reordered.
13108  **/
13109 gboolean
13110 gtk_tree_view_get_reorderable (GtkTreeView *tree_view)
13111 {
13112   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), FALSE);
13113
13114   return tree_view->priv->reorderable;
13115 }
13116
13117 /**
13118  * gtk_tree_view_set_reorderable:
13119  * @tree_view: A #GtkTreeView.
13120  * @reorderable: %TRUE, if the tree can be reordered.
13121  *
13122  * This function is a convenience function to allow you to reorder
13123  * models that support the #GtkTreeDragSourceIface and the
13124  * #GtkTreeDragDestIface.  Both #GtkTreeStore and #GtkListStore support
13125  * these.  If @reorderable is %TRUE, then the user can reorder the
13126  * model by dragging and dropping rows. The developer can listen to
13127  * these changes by connecting to the model's row_inserted and
13128  * row_deleted signals. The reordering is implemented by setting up
13129  * the tree view as a drag source and destination. Therefore, drag and
13130  * drop can not be used in a reorderable view for any other purpose.
13131  *
13132  * This function does not give you any degree of control over the order -- any
13133  * reordering is allowed.  If more control is needed, you should probably
13134  * handle drag and drop manually.
13135  **/
13136 void
13137 gtk_tree_view_set_reorderable (GtkTreeView *tree_view,
13138                                gboolean     reorderable)
13139 {
13140   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
13141
13142   reorderable = reorderable != FALSE;
13143
13144   if (tree_view->priv->reorderable == reorderable)
13145     return;
13146
13147   if (reorderable)
13148     {
13149       const GtkTargetEntry row_targets[] = {
13150         { "GTK_TREE_MODEL_ROW", GTK_TARGET_SAME_WIDGET, 0 }
13151       };
13152
13153       gtk_tree_view_enable_model_drag_source (tree_view,
13154                                               GDK_BUTTON1_MASK,
13155                                               row_targets,
13156                                               G_N_ELEMENTS (row_targets),
13157                                               GDK_ACTION_MOVE);
13158       gtk_tree_view_enable_model_drag_dest (tree_view,
13159                                             row_targets,
13160                                             G_N_ELEMENTS (row_targets),
13161                                             GDK_ACTION_MOVE);
13162     }
13163   else
13164     {
13165       gtk_tree_view_unset_rows_drag_source (tree_view);
13166       gtk_tree_view_unset_rows_drag_dest (tree_view);
13167     }
13168
13169   tree_view->priv->reorderable = reorderable;
13170
13171   g_object_notify (G_OBJECT (tree_view), "reorderable");
13172 }
13173
13174 static void
13175 gtk_tree_view_real_set_cursor (GtkTreeView     *tree_view,
13176                                GtkTreePath     *path,
13177                                SetCursorFlags   flags)
13178 {
13179   if (!(flags & CURSOR_INVALID) && tree_view->priv->cursor_node)
13180     {
13181       _gtk_tree_view_accessible_remove_state (tree_view,
13182                                               tree_view->priv->cursor_tree,
13183                                               tree_view->priv->cursor_node,
13184                                               GTK_CELL_RENDERER_FOCUSED);
13185       _gtk_tree_view_queue_draw_node (tree_view,
13186                                       tree_view->priv->cursor_tree,
13187                                       tree_view->priv->cursor_node,
13188                                       NULL);
13189     }
13190
13191   /* One cannot set the cursor on a separator.   Also, if
13192    * _gtk_tree_view_find_node returns TRUE, it ran out of tree
13193    * before finding the tree and node belonging to path.  The
13194    * path maps to a non-existing path and we will silently bail out.
13195    * We unset tree and node to avoid further processing.
13196    */
13197   if (path == NULL ||
13198       row_is_separator (tree_view, NULL, path)
13199       || _gtk_tree_view_find_node (tree_view,
13200                                    path,
13201                                    &tree_view->priv->cursor_tree,
13202                                    &tree_view->priv->cursor_node))
13203     {
13204       tree_view->priv->cursor_tree = NULL;
13205       tree_view->priv->cursor_node = NULL;
13206     }
13207
13208   if (tree_view->priv->cursor_node != NULL)
13209     {
13210       GtkRBTree *new_tree = NULL;
13211       GtkRBNode *new_node = NULL;
13212
13213       if ((flags & CLEAR_AND_SELECT) && !tree_view->priv->modify_selection_pressed)
13214         {
13215           GtkTreeSelectMode mode = 0;
13216
13217           if (tree_view->priv->extend_selection_pressed)
13218             mode |= GTK_TREE_SELECT_MODE_EXTEND;
13219
13220           _gtk_tree_selection_internal_select_node (tree_view->priv->selection,
13221                                                     tree_view->priv->cursor_node,
13222                                                     tree_view->priv->cursor_tree,
13223                                                     path,
13224                                                     mode,
13225                                                     FALSE);
13226         }
13227
13228       /* We have to re-find tree and node here again, somebody might have
13229        * cleared the node or the whole tree in the GtkTreeSelection::changed
13230        * callback. If the nodes differ we bail out here.
13231        */
13232       _gtk_tree_view_find_node (tree_view, path, &new_tree, &new_node);
13233
13234       if (tree_view->priv->cursor_node != new_node)
13235         return;
13236
13237       if (flags & CLAMP_NODE)
13238         {
13239           gtk_tree_view_clamp_node_visible (tree_view,
13240                                             tree_view->priv->cursor_tree,
13241                                             tree_view->priv->cursor_node);
13242           _gtk_tree_view_queue_draw_node (tree_view,
13243                                           tree_view->priv->cursor_tree,
13244                                           tree_view->priv->cursor_node,
13245                                           NULL);
13246         }
13247
13248       _gtk_tree_view_accessible_add_state (tree_view,
13249                                            tree_view->priv->cursor_tree,
13250                                            tree_view->priv->cursor_node,
13251                                            GTK_CELL_RENDERER_FOCUSED);
13252     }
13253
13254   g_signal_emit (tree_view, tree_view_signals[CURSOR_CHANGED], 0);
13255 }
13256
13257 /**
13258  * gtk_tree_view_get_cursor:
13259  * @tree_view: A #GtkTreeView
13260  * @path: (out) (transfer full) (allow-none): A pointer to be filled with the current cursor path, or %NULL
13261  * @focus_column: (out) (transfer none) (allow-none): A pointer to be filled with the current focus column, or %NULL
13262  *
13263  * Fills in @path and @focus_column with the current path and focus column.  If
13264  * the cursor isn't currently set, then *@path will be %NULL.  If no column
13265  * currently has focus, then *@focus_column will be %NULL.
13266  *
13267  * The returned #GtkTreePath must be freed with gtk_tree_path_free() when
13268  * you are done with it.
13269  **/
13270 void
13271 gtk_tree_view_get_cursor (GtkTreeView        *tree_view,
13272                           GtkTreePath       **path,
13273                           GtkTreeViewColumn **focus_column)
13274 {
13275   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
13276
13277   if (path)
13278     {
13279       if (tree_view->priv->cursor_node)
13280         *path = _gtk_tree_path_new_from_rbtree (tree_view->priv->cursor_tree,
13281                                                 tree_view->priv->cursor_node);
13282       else
13283         *path = NULL;
13284     }
13285
13286   if (focus_column)
13287     {
13288       *focus_column = tree_view->priv->focus_column;
13289     }
13290 }
13291
13292 /**
13293  * gtk_tree_view_set_cursor:
13294  * @tree_view: A #GtkTreeView
13295  * @path: A #GtkTreePath
13296  * @focus_column: (allow-none): A #GtkTreeViewColumn, or %NULL
13297  * @start_editing: %TRUE if the specified cell should start being edited.
13298  *
13299  * Sets the current keyboard focus to be at @path, and selects it.  This is
13300  * useful when you want to focus the user's attention on a particular row.  If
13301  * @focus_column is not %NULL, then focus is given to the column specified by
13302  * it. Additionally, if @focus_column is specified, and @start_editing is
13303  * %TRUE, then editing should be started in the specified cell.
13304  * This function is often followed by @gtk_widget_grab_focus (@tree_view)
13305  * in order to give keyboard focus to the widget.  Please note that editing
13306  * can only happen when the widget is realized.
13307  *
13308  * If @path is invalid for @model, the current cursor (if any) will be unset
13309  * and the function will return without failing.
13310  **/
13311 void
13312 gtk_tree_view_set_cursor (GtkTreeView       *tree_view,
13313                           GtkTreePath       *path,
13314                           GtkTreeViewColumn *focus_column,
13315                           gboolean           start_editing)
13316 {
13317   gtk_tree_view_set_cursor_on_cell (tree_view, path, focus_column,
13318                                     NULL, start_editing);
13319 }
13320
13321 /**
13322  * gtk_tree_view_set_cursor_on_cell:
13323  * @tree_view: A #GtkTreeView
13324  * @path: A #GtkTreePath
13325  * @focus_column: (allow-none): A #GtkTreeViewColumn, or %NULL
13326  * @focus_cell: (allow-none): A #GtkCellRenderer, or %NULL
13327  * @start_editing: %TRUE if the specified cell should start being edited.
13328  *
13329  * Sets the current keyboard focus to be at @path, and selects it.  This is
13330  * useful when you want to focus the user's attention on a particular row.  If
13331  * @focus_column is not %NULL, then focus is given to the column specified by
13332  * it. If @focus_column and @focus_cell are not %NULL, and @focus_column
13333  * contains 2 or more editable or activatable cells, then focus is given to
13334  * the cell specified by @focus_cell. Additionally, if @focus_column is
13335  * specified, and @start_editing is %TRUE, then editing should be started in
13336  * the specified cell.  This function is often followed by
13337  * @gtk_widget_grab_focus (@tree_view) in order to give keyboard focus to the
13338  * widget.  Please note that editing can only happen when the widget is
13339  * realized.
13340  *
13341  * If @path is invalid for @model, the current cursor (if any) will be unset
13342  * and the function will return without failing.
13343  *
13344  * Since: 2.2
13345  **/
13346 void
13347 gtk_tree_view_set_cursor_on_cell (GtkTreeView       *tree_view,
13348                                   GtkTreePath       *path,
13349                                   GtkTreeViewColumn *focus_column,
13350                                   GtkCellRenderer   *focus_cell,
13351                                   gboolean           start_editing)
13352 {
13353   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
13354   g_return_if_fail (path != NULL);
13355   g_return_if_fail (focus_column == NULL || GTK_IS_TREE_VIEW_COLUMN (focus_column));
13356
13357   if (!tree_view->priv->model)
13358     return;
13359
13360   if (focus_cell)
13361     {
13362       g_return_if_fail (focus_column);
13363       g_return_if_fail (GTK_IS_CELL_RENDERER (focus_cell));
13364     }
13365
13366   /* cancel the current editing, if it exists */
13367   if (tree_view->priv->edited_column &&
13368       gtk_cell_area_get_edit_widget
13369       (gtk_cell_layout_get_area (GTK_CELL_LAYOUT (tree_view->priv->edited_column))))
13370     gtk_tree_view_stop_editing (tree_view, TRUE);
13371
13372   gtk_tree_view_real_set_cursor (tree_view, path, CLEAR_AND_SELECT | CLAMP_NODE);
13373
13374   if (focus_column &&
13375       gtk_tree_view_column_get_visible (focus_column))
13376     {
13377       GList *list;
13378       gboolean column_in_tree = FALSE;
13379
13380       for (list = tree_view->priv->columns; list; list = list->next)
13381         if (list->data == focus_column)
13382           {
13383             column_in_tree = TRUE;
13384             break;
13385           }
13386       g_return_if_fail (column_in_tree);
13387       _gtk_tree_view_set_focus_column (tree_view, focus_column);
13388       if (focus_cell)
13389         gtk_tree_view_column_focus_cell (focus_column, focus_cell);
13390       if (start_editing)
13391         gtk_tree_view_start_editing (tree_view, path, TRUE);
13392     }
13393 }
13394
13395 /**
13396  * gtk_tree_view_get_bin_window:
13397  * @tree_view: A #GtkTreeView
13398  *
13399  * Returns the window that @tree_view renders to.
13400  * This is used primarily to compare to <literal>event->window</literal>
13401  * to confirm that the event on @tree_view is on the right window.
13402  *
13403  * Return value: (transfer none): A #GdkWindow, or %NULL when @tree_view
13404  *     hasn't been realized yet
13405  **/
13406 GdkWindow *
13407 gtk_tree_view_get_bin_window (GtkTreeView *tree_view)
13408 {
13409   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), NULL);
13410
13411   return tree_view->priv->bin_window;
13412 }
13413
13414 /**
13415  * gtk_tree_view_get_path_at_pos:
13416  * @tree_view: A #GtkTreeView.
13417  * @x: The x position to be identified (relative to bin_window).
13418  * @y: The y position to be identified (relative to bin_window).
13419  * @path: (out) (allow-none): A pointer to a #GtkTreePath pointer to be filled in, or %NULL
13420  * @column: (out) (transfer none) (allow-none): A pointer to a #GtkTreeViewColumn pointer to be filled in, or %NULL
13421  * @cell_x: (out) (allow-none): A pointer where the X coordinate relative to the cell can be placed, or %NULL
13422  * @cell_y: (out) (allow-none): A pointer where the Y coordinate relative to the cell can be placed, or %NULL
13423  *
13424  * Finds the path at the point (@x, @y), relative to bin_window coordinates
13425  * (please see gtk_tree_view_get_bin_window()).
13426  * That is, @x and @y are relative to an events coordinates. @x and @y must
13427  * come from an event on the @tree_view only where <literal>event->window ==
13428  * gtk_tree_view_get_bin_window (<!-- -->)</literal>. It is primarily for
13429  * things like popup menus. If @path is non-%NULL, then it will be filled
13430  * with the #GtkTreePath at that point.  This path should be freed with
13431  * gtk_tree_path_free().  If @column is non-%NULL, then it will be filled
13432  * with the column at that point.  @cell_x and @cell_y return the coordinates
13433  * relative to the cell background (i.e. the @background_area passed to
13434  * gtk_cell_renderer_render()).  This function is only meaningful if
13435  * @tree_view is realized.  Therefore this function will always return %FALSE
13436  * if @tree_view is not realized or does not have a model.
13437  *
13438  * For converting widget coordinates (eg. the ones you get from
13439  * GtkWidget::query-tooltip), please see
13440  * gtk_tree_view_convert_widget_to_bin_window_coords().
13441  *
13442  * Return value: %TRUE if a row exists at that coordinate.
13443  **/
13444 gboolean
13445 gtk_tree_view_get_path_at_pos (GtkTreeView        *tree_view,
13446                                gint                x,
13447                                gint                y,
13448                                GtkTreePath       **path,
13449                                GtkTreeViewColumn **column,
13450                                gint               *cell_x,
13451                                gint               *cell_y)
13452 {
13453   GtkRBTree *tree;
13454   GtkRBNode *node;
13455   gint y_offset;
13456
13457   g_return_val_if_fail (tree_view != NULL, FALSE);
13458
13459   if (path)
13460     *path = NULL;
13461   if (column)
13462     *column = NULL;
13463
13464   if (tree_view->priv->bin_window == NULL)
13465     return FALSE;
13466
13467   if (tree_view->priv->tree == NULL)
13468     return FALSE;
13469
13470   if (x > gtk_adjustment_get_upper (tree_view->priv->hadjustment))
13471     return FALSE;
13472
13473   if (x < 0 || y < 0)
13474     return FALSE;
13475
13476   if (column || cell_x)
13477     {
13478       GtkTreeViewColumn *tmp_column;
13479       GtkTreeViewColumn *last_column = NULL;
13480       GList *list;
13481       gint remaining_x = x;
13482       gboolean found = FALSE;
13483       gboolean rtl;
13484       gint width;
13485
13486       rtl = (gtk_widget_get_direction (GTK_WIDGET (tree_view)) == GTK_TEXT_DIR_RTL);
13487       for (list = (rtl ? g_list_last (tree_view->priv->columns) : g_list_first (tree_view->priv->columns));
13488            list;
13489            list = (rtl ? list->prev : list->next))
13490         {
13491           tmp_column = list->data;
13492
13493           if (gtk_tree_view_column_get_visible (tmp_column) == FALSE)
13494             continue;
13495
13496           last_column = tmp_column;
13497           width = gtk_tree_view_column_get_width (tmp_column);
13498           if (remaining_x <= width)
13499             {
13500               found = TRUE;
13501
13502               if (column)
13503                 *column = tmp_column;
13504
13505               if (cell_x)
13506                 *cell_x = remaining_x;
13507
13508               break;
13509             }
13510           remaining_x -= width;
13511         }
13512
13513       /* If found is FALSE and there is a last_column, then it the remainder
13514        * space is in that area
13515        */
13516       if (!found)
13517         {
13518           if (last_column)
13519             {
13520               if (column)
13521                 *column = last_column;
13522
13523               if (cell_x)
13524                 *cell_x = gtk_tree_view_column_get_width (last_column) + remaining_x;
13525             }
13526           else
13527             {
13528               return FALSE;
13529             }
13530         }
13531     }
13532
13533   y_offset = _gtk_rbtree_find_offset (tree_view->priv->tree,
13534                                       TREE_WINDOW_Y_TO_RBTREE_Y (tree_view, y),
13535                                       &tree, &node);
13536
13537   if (tree == NULL)
13538     return FALSE;
13539
13540   if (cell_y)
13541     *cell_y = y_offset;
13542
13543   if (path)
13544     *path = _gtk_tree_path_new_from_rbtree (tree, node);
13545
13546   return TRUE;
13547 }
13548
13549
13550 static inline gint
13551 gtk_tree_view_get_cell_area_height (GtkTreeView *tree_view,
13552                                     GtkRBNode   *node,
13553                                     gint         vertical_separator)
13554 {
13555   int expander_size = gtk_tree_view_get_expander_size (tree_view);
13556   int height;
13557
13558   /* The "cell" areas are the cell_area passed in to gtk_cell_renderer_render(),
13559    * i.e. just the cells, no spacing.
13560    *
13561    * The cell area height is at least expander_size - vertical_separator.
13562    * For regular nodes, the height is then at least expander_size. We should
13563    * be able to enforce the expander_size minimum here, because this
13564    * function will not be called for irregular (e.g. separator) rows.
13565    */
13566   height = gtk_tree_view_get_row_height (tree_view, node);
13567   if (height < expander_size)
13568     height = expander_size;
13569
13570   return height - vertical_separator;
13571 }
13572
13573 static inline gint
13574 gtk_tree_view_get_cell_area_y_offset (GtkTreeView *tree_view,
13575                                       GtkRBTree   *tree,
13576                                       GtkRBNode   *node,
13577                                       gint         vertical_separator)
13578 {
13579   int offset;
13580
13581   offset = gtk_tree_view_get_row_y_offset (tree_view, tree, node);
13582   offset += vertical_separator / 2;
13583
13584   return offset;
13585 }
13586
13587 /**
13588  * gtk_tree_view_get_cell_area:
13589  * @tree_view: a #GtkTreeView
13590  * @path: (allow-none): a #GtkTreePath for the row, or %NULL to get only horizontal coordinates
13591  * @column: (allow-none): a #GtkTreeViewColumn for the column, or %NULL to get only vertical coordinates
13592  * @rect: (out): rectangle to fill with cell rect
13593  *
13594  * Fills the bounding rectangle in bin_window coordinates for the cell at the
13595  * row specified by @path and the column specified by @column.  If @path is
13596  * %NULL, or points to a path not currently displayed, the @y and @height fields
13597  * of the rectangle will be filled with 0. If @column is %NULL, the @x and @width
13598  * fields will be filled with 0.  The sum of all cell rects does not cover the
13599  * entire tree; there are extra pixels in between rows, for example. The
13600  * returned rectangle is equivalent to the @cell_area passed to
13601  * gtk_cell_renderer_render().  This function is only valid if @tree_view is
13602  * realized.
13603  **/
13604 void
13605 gtk_tree_view_get_cell_area (GtkTreeView        *tree_view,
13606                              GtkTreePath        *path,
13607                              GtkTreeViewColumn  *column,
13608                              GdkRectangle       *rect)
13609 {
13610   GtkRBTree *tree = NULL;
13611   GtkRBNode *node = NULL;
13612   gint vertical_separator;
13613   gint horizontal_separator;
13614
13615   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
13616   g_return_if_fail (column == NULL || GTK_IS_TREE_VIEW_COLUMN (column));
13617   g_return_if_fail (rect != NULL);
13618   g_return_if_fail (!column || gtk_tree_view_column_get_tree_view (column) == (GtkWidget *) tree_view);
13619   g_return_if_fail (gtk_widget_get_realized (GTK_WIDGET (tree_view)));
13620
13621   gtk_widget_style_get (GTK_WIDGET (tree_view),
13622                         "vertical-separator", &vertical_separator,
13623                         "horizontal-separator", &horizontal_separator,
13624                         NULL);
13625
13626   rect->x = 0;
13627   rect->y = 0;
13628   rect->width = 0;
13629   rect->height = 0;
13630
13631   if (column)
13632     {
13633       rect->x = gtk_tree_view_column_get_x_offset (column) + horizontal_separator/2;
13634       rect->width = gtk_tree_view_column_get_width (column) - horizontal_separator;
13635     }
13636
13637   if (path)
13638     {
13639       gboolean ret = _gtk_tree_view_find_node (tree_view, path, &tree, &node);
13640
13641       /* Get vertical coords */
13642       if ((!ret && tree == NULL) || ret)
13643         return;
13644
13645       if (row_is_separator (tree_view, NULL, path))
13646         {
13647           /* There isn't really a "cell area" for separator, so we
13648            * return the y, height values for background area instead.
13649            */
13650           rect->y = gtk_tree_view_get_row_y_offset (tree_view, tree, node);
13651           rect->height = gtk_tree_view_get_row_height (tree_view, node);
13652         }
13653       else
13654         {
13655           rect->y = gtk_tree_view_get_cell_area_y_offset (tree_view, tree, node,
13656                                                           vertical_separator);
13657           rect->height = gtk_tree_view_get_cell_area_height (tree_view, node,
13658                                                              vertical_separator);
13659         }
13660
13661       if (column &&
13662           gtk_tree_view_is_expander_column (tree_view, column))
13663         {
13664           gint depth = gtk_tree_path_get_depth (path);
13665           gboolean rtl;
13666
13667           rtl = gtk_widget_get_direction (GTK_WIDGET (tree_view)) == GTK_TEXT_DIR_RTL;
13668
13669           if (!rtl)
13670             rect->x += (depth - 1) * tree_view->priv->level_indentation;
13671           rect->width -= (depth - 1) * tree_view->priv->level_indentation;
13672
13673           if (gtk_tree_view_draw_expanders (tree_view))
13674             {
13675               int expander_size = gtk_tree_view_get_expander_size (tree_view);
13676               if (!rtl)
13677                 rect->x += depth * expander_size;
13678               rect->width -= depth * expander_size;
13679             }
13680
13681           rect->width = MAX (rect->width, 0);
13682         }
13683     }
13684 }
13685
13686 static inline gint
13687 gtk_tree_view_get_row_height (GtkTreeView *tree_view,
13688                               GtkRBNode   *node)
13689 {
13690   int expander_size = gtk_tree_view_get_expander_size (tree_view);
13691   int height;
13692
13693   /* The "background" areas of all rows/cells add up to cover the entire tree.
13694    * The background includes all inter-row and inter-cell spacing.
13695    *
13696    * If the row pointed at by node does not have a height set, we default
13697    * to expander_size, which is the minimum height for regular nodes.
13698    * Non-regular nodes (e.g. separators) can have a height set smaller
13699    * than expander_size and should not be overruled here.
13700    */
13701   height = GTK_RBNODE_GET_HEIGHT (node);
13702   if (height <= 0)
13703     height = expander_size;
13704
13705   return height;
13706 }
13707
13708 static inline gint
13709 gtk_tree_view_get_row_y_offset (GtkTreeView *tree_view,
13710                                 GtkRBTree   *tree,
13711                                 GtkRBNode   *node)
13712 {
13713   int offset;
13714
13715   offset = _gtk_rbtree_node_find_offset (tree, node);
13716
13717   return RBTREE_Y_TO_TREE_WINDOW_Y (tree_view, offset);
13718 }
13719
13720 /**
13721  * gtk_tree_view_get_background_area:
13722  * @tree_view: a #GtkTreeView
13723  * @path: (allow-none): a #GtkTreePath for the row, or %NULL to get only horizontal coordinates
13724  * @column: (allow-none): a #GtkTreeViewColumn for the column, or %NULL to get only vertical coordiantes
13725  * @rect: (out): rectangle to fill with cell background rect
13726  *
13727  * Fills the bounding rectangle in bin_window coordinates for the cell at the
13728  * row specified by @path and the column specified by @column.  If @path is
13729  * %NULL, or points to a node not found in the tree, the @y and @height fields of
13730  * the rectangle will be filled with 0. If @column is %NULL, the @x and @width
13731  * fields will be filled with 0.  The returned rectangle is equivalent to the
13732  * @background_area passed to gtk_cell_renderer_render().  These background
13733  * areas tile to cover the entire bin window.  Contrast with the @cell_area,
13734  * returned by gtk_tree_view_get_cell_area(), which returns only the cell
13735  * itself, excluding surrounding borders and the tree expander area.
13736  *
13737  **/
13738 void
13739 gtk_tree_view_get_background_area (GtkTreeView        *tree_view,
13740                                    GtkTreePath        *path,
13741                                    GtkTreeViewColumn  *column,
13742                                    GdkRectangle       *rect)
13743 {
13744   GtkRBTree *tree = NULL;
13745   GtkRBNode *node = NULL;
13746
13747   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
13748   g_return_if_fail (column == NULL || GTK_IS_TREE_VIEW_COLUMN (column));
13749   g_return_if_fail (rect != NULL);
13750
13751   rect->x = 0;
13752   rect->y = 0;
13753   rect->width = 0;
13754   rect->height = 0;
13755
13756   if (path)
13757     {
13758       /* Get vertical coords */
13759
13760       if (!_gtk_tree_view_find_node (tree_view, path, &tree, &node) &&
13761           tree == NULL)
13762         return;
13763
13764       rect->y = gtk_tree_view_get_row_y_offset (tree_view, tree, node);
13765       rect->height = gtk_tree_view_get_row_height (tree_view, node);
13766     }
13767
13768   if (column)
13769     {
13770       gint x2 = 0;
13771
13772       gtk_tree_view_get_background_xrange (tree_view, tree, column, &rect->x, &x2);
13773       rect->width = x2 - rect->x;
13774     }
13775 }
13776
13777 /**
13778  * gtk_tree_view_get_visible_rect:
13779  * @tree_view: a #GtkTreeView
13780  * @visible_rect: (out): rectangle to fill
13781  *
13782  * Fills @visible_rect with the currently-visible region of the
13783  * buffer, in tree coordinates. Convert to bin_window coordinates with
13784  * gtk_tree_view_convert_tree_to_bin_window_coords().
13785  * Tree coordinates start at 0,0 for row 0 of the tree, and cover the entire
13786  * scrollable area of the tree.
13787  **/
13788 void
13789 gtk_tree_view_get_visible_rect (GtkTreeView  *tree_view,
13790                                 GdkRectangle *visible_rect)
13791 {
13792   GtkAllocation allocation;
13793   GtkWidget *widget;
13794
13795   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
13796
13797   widget = GTK_WIDGET (tree_view);
13798
13799   if (visible_rect)
13800     {
13801       gtk_widget_get_allocation (widget, &allocation);
13802       visible_rect->x = gtk_adjustment_get_value (tree_view->priv->hadjustment);
13803       visible_rect->y = gtk_adjustment_get_value (tree_view->priv->vadjustment);
13804       visible_rect->width = allocation.width;
13805       visible_rect->height = allocation.height - gtk_tree_view_get_effective_header_height (tree_view);
13806     }
13807 }
13808
13809 /**
13810  * gtk_tree_view_convert_widget_to_tree_coords:
13811  * @tree_view: a #GtkTreeView
13812  * @wx: X coordinate relative to the widget
13813  * @wy: Y coordinate relative to the widget
13814  * @tx: (out): return location for tree X coordinate
13815  * @ty: (out): return location for tree Y coordinate
13816  *
13817  * Converts widget coordinates to coordinates for the
13818  * tree (the full scrollable area of the tree).
13819  *
13820  * Since: 2.12
13821  **/
13822 void
13823 gtk_tree_view_convert_widget_to_tree_coords (GtkTreeView *tree_view,
13824                                              gint         wx,
13825                                              gint         wy,
13826                                              gint        *tx,
13827                                              gint        *ty)
13828 {
13829   gint x, y;
13830
13831   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
13832
13833   gtk_tree_view_convert_widget_to_bin_window_coords (tree_view,
13834                                                      wx, wy,
13835                                                      &x, &y);
13836   gtk_tree_view_convert_bin_window_to_tree_coords (tree_view,
13837                                                    x, y,
13838                                                    tx, ty);
13839 }
13840
13841 /**
13842  * gtk_tree_view_convert_tree_to_widget_coords:
13843  * @tree_view: a #GtkTreeView
13844  * @tx: X coordinate relative to the tree
13845  * @ty: Y coordinate relative to the tree
13846  * @wx: (out): return location for widget X coordinate
13847  * @wy: (out): return location for widget Y coordinate
13848  *
13849  * Converts tree coordinates (coordinates in full scrollable area of the tree)
13850  * to widget coordinates.
13851  *
13852  * Since: 2.12
13853  **/
13854 void
13855 gtk_tree_view_convert_tree_to_widget_coords (GtkTreeView *tree_view,
13856                                              gint         tx,
13857                                              gint         ty,
13858                                              gint        *wx,
13859                                              gint        *wy)
13860 {
13861   gint x, y;
13862
13863   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
13864
13865   gtk_tree_view_convert_tree_to_bin_window_coords (tree_view,
13866                                                    tx, ty,
13867                                                    &x, &y);
13868   gtk_tree_view_convert_bin_window_to_widget_coords (tree_view,
13869                                                      x, y,
13870                                                      wx, wy);
13871 }
13872
13873 /**
13874  * gtk_tree_view_convert_widget_to_bin_window_coords:
13875  * @tree_view: a #GtkTreeView
13876  * @wx: X coordinate relative to the widget
13877  * @wy: Y coordinate relative to the widget
13878  * @bx: (out): return location for bin_window X coordinate
13879  * @by: (out): return location for bin_window Y coordinate
13880  *
13881  * Converts widget coordinates to coordinates for the bin_window
13882  * (see gtk_tree_view_get_bin_window()).
13883  *
13884  * Since: 2.12
13885  **/
13886 void
13887 gtk_tree_view_convert_widget_to_bin_window_coords (GtkTreeView *tree_view,
13888                                                    gint         wx,
13889                                                    gint         wy,
13890                                                    gint        *bx,
13891                                                    gint        *by)
13892 {
13893   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
13894
13895   if (bx)
13896     *bx = wx + gtk_adjustment_get_value (tree_view->priv->hadjustment);
13897   if (by)
13898     *by = wy - gtk_tree_view_get_effective_header_height (tree_view);
13899 }
13900
13901 /**
13902  * gtk_tree_view_convert_bin_window_to_widget_coords:
13903  * @tree_view: a #GtkTreeView
13904  * @bx: bin_window X coordinate
13905  * @by: bin_window Y coordinate
13906  * @wx: (out): return location for widget X coordinate
13907  * @wy: (out): return location for widget Y coordinate
13908  *
13909  * Converts bin_window coordinates (see gtk_tree_view_get_bin_window())
13910  * to widget relative coordinates.
13911  *
13912  * Since: 2.12
13913  **/
13914 void
13915 gtk_tree_view_convert_bin_window_to_widget_coords (GtkTreeView *tree_view,
13916                                                    gint         bx,
13917                                                    gint         by,
13918                                                    gint        *wx,
13919                                                    gint        *wy)
13920 {
13921   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
13922
13923   if (wx)
13924     *wx = bx - gtk_adjustment_get_value (tree_view->priv->hadjustment);
13925   if (wy)
13926     *wy = by + gtk_tree_view_get_effective_header_height (tree_view);
13927 }
13928
13929 /**
13930  * gtk_tree_view_convert_tree_to_bin_window_coords:
13931  * @tree_view: a #GtkTreeView
13932  * @tx: tree X coordinate
13933  * @ty: tree Y coordinate
13934  * @bx: (out): return location for X coordinate relative to bin_window
13935  * @by: (out): return location for Y coordinate relative to bin_window
13936  *
13937  * Converts tree coordinates (coordinates in full scrollable area of the tree)
13938  * to bin_window coordinates.
13939  *
13940  * Since: 2.12
13941  **/
13942 void
13943 gtk_tree_view_convert_tree_to_bin_window_coords (GtkTreeView *tree_view,
13944                                                  gint         tx,
13945                                                  gint         ty,
13946                                                  gint        *bx,
13947                                                  gint        *by)
13948 {
13949   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
13950
13951   if (bx)
13952     *bx = tx;
13953   if (by)
13954     *by = ty - tree_view->priv->dy;
13955 }
13956
13957 /**
13958  * gtk_tree_view_convert_bin_window_to_tree_coords:
13959  * @tree_view: a #GtkTreeView
13960  * @bx: X coordinate relative to bin_window
13961  * @by: Y coordinate relative to bin_window
13962  * @tx: (out): return location for tree X coordinate
13963  * @ty: (out): return location for tree Y coordinate
13964  *
13965  * Converts bin_window coordinates to coordinates for the
13966  * tree (the full scrollable area of the tree).
13967  *
13968  * Since: 2.12
13969  **/
13970 void
13971 gtk_tree_view_convert_bin_window_to_tree_coords (GtkTreeView *tree_view,
13972                                                  gint         bx,
13973                                                  gint         by,
13974                                                  gint        *tx,
13975                                                  gint        *ty)
13976 {
13977   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
13978
13979   if (tx)
13980     *tx = bx;
13981   if (ty)
13982     *ty = by + tree_view->priv->dy;
13983 }
13984
13985
13986
13987 /**
13988  * gtk_tree_view_get_visible_range:
13989  * @tree_view: A #GtkTreeView
13990  * @start_path: (out) (allow-none): Return location for start of region,
13991  *              or %NULL.
13992  * @end_path: (out) (allow-none): Return location for end of region, or %NULL.
13993  *
13994  * Sets @start_path and @end_path to be the first and last visible path.
13995  * Note that there may be invisible paths in between.
13996  *
13997  * The paths should be freed with gtk_tree_path_free() after use.
13998  *
13999  * Returns: %TRUE, if valid paths were placed in @start_path and @end_path.
14000  *
14001  * Since: 2.8
14002  **/
14003 gboolean
14004 gtk_tree_view_get_visible_range (GtkTreeView  *tree_view,
14005                                  GtkTreePath **start_path,
14006                                  GtkTreePath **end_path)
14007 {
14008   GtkRBTree *tree;
14009   GtkRBNode *node;
14010   gboolean retval;
14011
14012   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), FALSE);
14013
14014   if (!tree_view->priv->tree)
14015     return FALSE;
14016
14017   retval = TRUE;
14018
14019   if (start_path)
14020     {
14021       _gtk_rbtree_find_offset (tree_view->priv->tree,
14022                                TREE_WINDOW_Y_TO_RBTREE_Y (tree_view, 0),
14023                                &tree, &node);
14024       if (node)
14025         *start_path = _gtk_tree_path_new_from_rbtree (tree, node);
14026       else
14027         retval = FALSE;
14028     }
14029
14030   if (end_path)
14031     {
14032       gint y;
14033
14034       if (tree_view->priv->height < gtk_adjustment_get_page_size (tree_view->priv->vadjustment))
14035         y = tree_view->priv->height - 1;
14036       else
14037         y = TREE_WINDOW_Y_TO_RBTREE_Y (tree_view, gtk_adjustment_get_page_size (tree_view->priv->vadjustment)) - 1;
14038
14039       _gtk_rbtree_find_offset (tree_view->priv->tree, y, &tree, &node);
14040       if (node)
14041         *end_path = _gtk_tree_path_new_from_rbtree (tree, node);
14042       else
14043         retval = FALSE;
14044     }
14045
14046   return retval;
14047 }
14048
14049 /**
14050  * gtk_tree_view_is_blank_at_pos:
14051  * @tree_view: A #GtkTreeView
14052  * @x: The x position to be identified (relative to bin_window)
14053  * @y: The y position to be identified (relative to bin_window)
14054  * @path: (out) (allow-none): A pointer to a #GtkTreePath pointer to be filled in, or %NULL
14055  * @column: (out) (allow-none): A pointer to a #GtkTreeViewColumn pointer to be filled in, or %NULL
14056  * @cell_x: (out) (allow-none): A pointer where the X coordinate relative to the cell can be placed, or %NULL
14057  * @cell_y: (out) (allow-none): A pointer where the Y coordinate relative to the cell can be placed, or %NULL
14058  *
14059  * Determine whether the point (@x, @y) in @tree_view is blank, that is no
14060  * cell content nor an expander arrow is drawn at the location. If so, the
14061  * location can be considered as the background. You might wish to take
14062  * special action on clicks on the background, such as clearing a current
14063  * selection, having a custom context menu or starting rubber banding.
14064  *
14065  * The @x and @y coordinate that are provided must be relative to bin_window
14066  * coordinates.  That is, @x and @y must come from an event on @tree_view
14067  * where <literal>event->window == gtk_tree_view_get_bin_window (<!-- -->)</literal>.
14068  *
14069  * For converting widget coordinates (eg. the ones you get from
14070  * GtkWidget::query-tooltip), please see
14071  * gtk_tree_view_convert_widget_to_bin_window_coords().
14072  *
14073  * The @path, @column, @cell_x and @cell_y arguments will be filled in
14074  * likewise as for gtk_tree_view_get_path_at_pos().  Please see
14075  * gtk_tree_view_get_path_at_pos() for more information.
14076  *
14077  * Return value: %TRUE if the area at the given coordinates is blank,
14078  * %FALSE otherwise.
14079  *
14080  * Since: 3.0
14081  */
14082 gboolean
14083 gtk_tree_view_is_blank_at_pos (GtkTreeView       *tree_view,
14084                                gint                x,
14085                                gint                y,
14086                                GtkTreePath       **path,
14087                                GtkTreeViewColumn **column,
14088                                gint               *cell_x,
14089                                gint               *cell_y)
14090 {
14091   GtkRBTree *tree;
14092   GtkRBNode *node;
14093   GtkTreeIter iter;
14094   GtkTreePath *real_path;
14095   GtkTreeViewColumn *real_column;
14096   GdkRectangle cell_area, background_area;
14097
14098   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), FALSE);
14099
14100   if (!gtk_tree_view_get_path_at_pos (tree_view, x, y,
14101                                       &real_path, &real_column,
14102                                       cell_x, cell_y))
14103     /* If there's no path here, it is blank */
14104     return TRUE;
14105
14106   if (path)
14107     *path = real_path;
14108
14109   if (column)
14110     *column = real_column;
14111
14112   gtk_tree_model_get_iter (tree_view->priv->model, &iter, real_path);
14113   _gtk_tree_view_find_node (tree_view, real_path, &tree, &node);
14114
14115   /* Check if there's an expander arrow at (x, y) */
14116   if (real_column == tree_view->priv->expander_column
14117       && gtk_tree_view_draw_expanders (tree_view))
14118     {
14119       gboolean over_arrow;
14120
14121       over_arrow = coords_are_over_arrow (tree_view, tree, node, x, y);
14122
14123       if (over_arrow)
14124         {
14125           if (!path)
14126             gtk_tree_path_free (real_path);
14127           return FALSE;
14128         }
14129     }
14130
14131   /* Otherwise, have the column see if there's a cell at (x, y) */
14132   gtk_tree_view_column_cell_set_cell_data (real_column,
14133                                            tree_view->priv->model,
14134                                            &iter,
14135                                            GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_PARENT),
14136                                            node->children ? TRUE : FALSE);
14137
14138   gtk_tree_view_get_background_area (tree_view, real_path, real_column,
14139                                      &background_area);
14140   gtk_tree_view_get_cell_area (tree_view, real_path, real_column,
14141                                &cell_area);
14142
14143   if (!path)
14144     gtk_tree_path_free (real_path);
14145
14146   return _gtk_tree_view_column_is_blank_at_pos (real_column,
14147                                                 &cell_area,
14148                                                 &background_area,
14149                                                 x, y);
14150 }
14151
14152 static void
14153 unset_reorderable (GtkTreeView *tree_view)
14154 {
14155   if (tree_view->priv->reorderable)
14156     {
14157       tree_view->priv->reorderable = FALSE;
14158       g_object_notify (G_OBJECT (tree_view), "reorderable");
14159     }
14160 }
14161
14162 /**
14163  * gtk_tree_view_enable_model_drag_source:
14164  * @tree_view: a #GtkTreeView
14165  * @start_button_mask: Mask of allowed buttons to start drag
14166  * @targets: (array length=n_targets): the table of targets that the drag will support
14167  * @n_targets: the number of items in @targets
14168  * @actions: the bitmask of possible actions for a drag from this
14169  *    widget
14170  *
14171  * Turns @tree_view into a drag source for automatic DND. Calling this
14172  * method sets #GtkTreeView:reorderable to %FALSE.
14173  **/
14174 void
14175 gtk_tree_view_enable_model_drag_source (GtkTreeView              *tree_view,
14176                                         GdkModifierType           start_button_mask,
14177                                         const GtkTargetEntry     *targets,
14178                                         gint                      n_targets,
14179                                         GdkDragAction             actions)
14180 {
14181   TreeViewDragInfo *di;
14182
14183   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
14184
14185   gtk_drag_source_set (GTK_WIDGET (tree_view),
14186                        0,
14187                        targets,
14188                        n_targets,
14189                        actions);
14190
14191   di = ensure_info (tree_view);
14192
14193   di->start_button_mask = start_button_mask;
14194   di->source_actions = actions;
14195   di->source_set = TRUE;
14196
14197   unset_reorderable (tree_view);
14198 }
14199
14200 /**
14201  * gtk_tree_view_enable_model_drag_dest:
14202  * @tree_view: a #GtkTreeView
14203  * @targets: (array length=n_targets): the table of targets that
14204  *           the drag will support
14205  * @n_targets: the number of items in @targets
14206  * @actions: the bitmask of possible actions for a drag from this
14207  *    widget
14208  *
14209  * Turns @tree_view into a drop destination for automatic DND. Calling
14210  * this method sets #GtkTreeView:reorderable to %FALSE.
14211  **/
14212 void
14213 gtk_tree_view_enable_model_drag_dest (GtkTreeView              *tree_view,
14214                                       const GtkTargetEntry     *targets,
14215                                       gint                      n_targets,
14216                                       GdkDragAction             actions)
14217 {
14218   TreeViewDragInfo *di;
14219
14220   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
14221
14222   gtk_drag_dest_set (GTK_WIDGET (tree_view),
14223                      0,
14224                      targets,
14225                      n_targets,
14226                      actions);
14227
14228   di = ensure_info (tree_view);
14229   di->dest_set = TRUE;
14230
14231   unset_reorderable (tree_view);
14232 }
14233
14234 /**
14235  * gtk_tree_view_unset_rows_drag_source:
14236  * @tree_view: a #GtkTreeView
14237  *
14238  * Undoes the effect of
14239  * gtk_tree_view_enable_model_drag_source(). Calling this method sets
14240  * #GtkTreeView:reorderable to %FALSE.
14241  **/
14242 void
14243 gtk_tree_view_unset_rows_drag_source (GtkTreeView *tree_view)
14244 {
14245   TreeViewDragInfo *di;
14246
14247   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
14248
14249   di = get_info (tree_view);
14250
14251   if (di)
14252     {
14253       if (di->source_set)
14254         {
14255           gtk_drag_source_unset (GTK_WIDGET (tree_view));
14256           di->source_set = FALSE;
14257         }
14258
14259       if (!di->dest_set && !di->source_set)
14260         remove_info (tree_view);
14261     }
14262
14263   unset_reorderable (tree_view);
14264 }
14265
14266 /**
14267  * gtk_tree_view_unset_rows_drag_dest:
14268  * @tree_view: a #GtkTreeView
14269  *
14270  * Undoes the effect of
14271  * gtk_tree_view_enable_model_drag_dest(). Calling this method sets
14272  * #GtkTreeView:reorderable to %FALSE.
14273  **/
14274 void
14275 gtk_tree_view_unset_rows_drag_dest (GtkTreeView *tree_view)
14276 {
14277   TreeViewDragInfo *di;
14278
14279   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
14280
14281   di = get_info (tree_view);
14282
14283   if (di)
14284     {
14285       if (di->dest_set)
14286         {
14287           gtk_drag_dest_unset (GTK_WIDGET (tree_view));
14288           di->dest_set = FALSE;
14289         }
14290
14291       if (!di->dest_set && !di->source_set)
14292         remove_info (tree_view);
14293     }
14294
14295   unset_reorderable (tree_view);
14296 }
14297
14298 /**
14299  * gtk_tree_view_set_drag_dest_row:
14300  * @tree_view: a #GtkTreeView
14301  * @path: (allow-none): The path of the row to highlight, or %NULL
14302  * @pos: Specifies whether to drop before, after or into the row
14303  *
14304  * Sets the row that is highlighted for feedback.
14305  * If @path is %NULL, an existing highlight is removed.
14306  */
14307 void
14308 gtk_tree_view_set_drag_dest_row (GtkTreeView            *tree_view,
14309                                  GtkTreePath            *path,
14310                                  GtkTreeViewDropPosition pos)
14311 {
14312   GtkTreePath *current_dest;
14313
14314   /* Note; this function is exported to allow a custom DND
14315    * implementation, so it can't touch TreeViewDragInfo
14316    */
14317
14318   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
14319
14320   current_dest = NULL;
14321
14322   if (tree_view->priv->drag_dest_row)
14323     {
14324       current_dest = gtk_tree_row_reference_get_path (tree_view->priv->drag_dest_row);
14325       gtk_tree_row_reference_free (tree_view->priv->drag_dest_row);
14326     }
14327
14328   /* special case a drop on an empty model */
14329   tree_view->priv->empty_view_drop = 0;
14330
14331   if (pos == GTK_TREE_VIEW_DROP_BEFORE && path
14332       && gtk_tree_path_get_depth (path) == 1
14333       && gtk_tree_path_get_indices (path)[0] == 0)
14334     {
14335       gint n_children;
14336
14337       n_children = gtk_tree_model_iter_n_children (tree_view->priv->model,
14338                                                    NULL);
14339
14340       if (!n_children)
14341         tree_view->priv->empty_view_drop = 1;
14342     }
14343
14344   tree_view->priv->drag_dest_pos = pos;
14345
14346   if (path)
14347     {
14348       tree_view->priv->drag_dest_row =
14349         gtk_tree_row_reference_new_proxy (G_OBJECT (tree_view), tree_view->priv->model, path);
14350       gtk_tree_view_queue_draw_path (tree_view, path, NULL);
14351     }
14352   else
14353     tree_view->priv->drag_dest_row = NULL;
14354
14355   if (current_dest)
14356     {
14357       GtkRBTree *tree, *new_tree;
14358       GtkRBNode *node, *new_node;
14359
14360       _gtk_tree_view_find_node (tree_view, current_dest, &tree, &node);
14361       _gtk_tree_view_queue_draw_node (tree_view, tree, node, NULL);
14362
14363       if (tree && node)
14364         {
14365           _gtk_rbtree_next_full (tree, node, &new_tree, &new_node);
14366           if (new_tree && new_node)
14367             _gtk_tree_view_queue_draw_node (tree_view, new_tree, new_node, NULL);
14368
14369           _gtk_rbtree_prev_full (tree, node, &new_tree, &new_node);
14370           if (new_tree && new_node)
14371             _gtk_tree_view_queue_draw_node (tree_view, new_tree, new_node, NULL);
14372         }
14373       gtk_tree_path_free (current_dest);
14374     }
14375 }
14376
14377 /**
14378  * gtk_tree_view_get_drag_dest_row:
14379  * @tree_view: a #GtkTreeView
14380  * @path: (out) (allow-none): Return location for the path of the highlighted row, or %NULL.
14381  * @pos: (out) (allow-none): Return location for the drop position, or %NULL
14382  *
14383  * Gets information about the row that is highlighted for feedback.
14384  **/
14385 void
14386 gtk_tree_view_get_drag_dest_row (GtkTreeView              *tree_view,
14387                                  GtkTreePath             **path,
14388                                  GtkTreeViewDropPosition  *pos)
14389 {
14390   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
14391
14392   if (path)
14393     {
14394       if (tree_view->priv->drag_dest_row)
14395         *path = gtk_tree_row_reference_get_path (tree_view->priv->drag_dest_row);
14396       else
14397         {
14398           if (tree_view->priv->empty_view_drop)
14399             *path = gtk_tree_path_new_from_indices (0, -1);
14400           else
14401             *path = NULL;
14402         }
14403     }
14404
14405   if (pos)
14406     *pos = tree_view->priv->drag_dest_pos;
14407 }
14408
14409 /**
14410  * gtk_tree_view_get_dest_row_at_pos:
14411  * @tree_view: a #GtkTreeView
14412  * @drag_x: the position to determine the destination row for
14413  * @drag_y: the position to determine the destination row for
14414  * @path: (out) (allow-none): Return location for the path of the highlighted row, or %NULL.
14415  * @pos: (out) (allow-none): Return location for the drop position, or %NULL
14416  *
14417  * Determines the destination row for a given position.  @drag_x and
14418  * @drag_y are expected to be in widget coordinates.  This function is only
14419  * meaningful if @tree_view is realized.  Therefore this function will always
14420  * return %FALSE if @tree_view is not realized or does not have a model.
14421  *
14422  * Return value: whether there is a row at the given position, %TRUE if this
14423  * is indeed the case.
14424  **/
14425 gboolean
14426 gtk_tree_view_get_dest_row_at_pos (GtkTreeView             *tree_view,
14427                                    gint                     drag_x,
14428                                    gint                     drag_y,
14429                                    GtkTreePath            **path,
14430                                    GtkTreeViewDropPosition *pos)
14431 {
14432   gint cell_y;
14433   gint bin_x, bin_y;
14434   gdouble offset_into_row;
14435   gdouble third;
14436   GdkRectangle cell;
14437   GtkTreeViewColumn *column = NULL;
14438   GtkTreePath *tmp_path = NULL;
14439
14440   /* Note; this function is exported to allow a custom DND
14441    * implementation, so it can't touch TreeViewDragInfo
14442    */
14443
14444   g_return_val_if_fail (tree_view != NULL, FALSE);
14445   g_return_val_if_fail (drag_x >= 0, FALSE);
14446   g_return_val_if_fail (drag_y >= 0, FALSE);
14447
14448   if (path)
14449     *path = NULL;
14450
14451   if (tree_view->priv->bin_window == NULL)
14452     return FALSE;
14453
14454   if (tree_view->priv->tree == NULL)
14455     return FALSE;
14456
14457   /* If in the top third of a row, we drop before that row; if
14458    * in the bottom third, drop after that row; if in the middle,
14459    * and the row has children, drop into the row.
14460    */
14461   gtk_tree_view_convert_widget_to_bin_window_coords (tree_view, drag_x, drag_y,
14462                                                      &bin_x, &bin_y);
14463
14464   if (!gtk_tree_view_get_path_at_pos (tree_view,
14465                                       bin_x,
14466                                       bin_y,
14467                                       &tmp_path,
14468                                       &column,
14469                                       NULL,
14470                                       &cell_y))
14471     return FALSE;
14472
14473   gtk_tree_view_get_background_area (tree_view, tmp_path, column,
14474                                      &cell);
14475
14476   offset_into_row = cell_y;
14477
14478   if (path)
14479     *path = tmp_path;
14480   else
14481     gtk_tree_path_free (tmp_path);
14482
14483   tmp_path = NULL;
14484
14485   third = cell.height / 3.0;
14486
14487   if (pos)
14488     {
14489       if (offset_into_row < third)
14490         {
14491           *pos = GTK_TREE_VIEW_DROP_BEFORE;
14492         }
14493       else if (offset_into_row < (cell.height / 2.0))
14494         {
14495           *pos = GTK_TREE_VIEW_DROP_INTO_OR_BEFORE;
14496         }
14497       else if (offset_into_row < third * 2.0)
14498         {
14499           *pos = GTK_TREE_VIEW_DROP_INTO_OR_AFTER;
14500         }
14501       else
14502         {
14503           *pos = GTK_TREE_VIEW_DROP_AFTER;
14504         }
14505     }
14506
14507   return TRUE;
14508 }
14509
14510
14511
14512 /* KEEP IN SYNC WITH GTK_TREE_VIEW_BIN_EXPOSE */
14513 /**
14514  * gtk_tree_view_create_row_drag_icon:
14515  * @tree_view: a #GtkTreeView
14516  * @path: a #GtkTreePath in @tree_view
14517  *
14518  * Creates a #cairo_surface_t representation of the row at @path.
14519  * This image is used for a drag icon.
14520  *
14521  * Return value: (transfer full): a newly-allocated surface of the drag icon.
14522  **/
14523 cairo_surface_t *
14524 gtk_tree_view_create_row_drag_icon (GtkTreeView  *tree_view,
14525                                     GtkTreePath  *path)
14526 {
14527   GtkTreeIter   iter;
14528   GtkRBTree    *tree;
14529   GtkRBNode    *node;
14530   GtkStyleContext *context;
14531   gint cell_offset;
14532   GList *list;
14533   GdkRectangle background_area;
14534   GtkWidget *widget;
14535   gint depth;
14536   /* start drawing inside the black outline */
14537   gint x = 1, y = 1;
14538   cairo_surface_t *surface;
14539   gint bin_window_width;
14540   gboolean is_separator = FALSE;
14541   gboolean rtl, allow_rules;
14542   cairo_t *cr;
14543
14544   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), NULL);
14545   g_return_val_if_fail (path != NULL, NULL);
14546
14547   widget = GTK_WIDGET (tree_view);
14548
14549   if (!gtk_widget_get_realized (widget))
14550     return NULL;
14551
14552   depth = gtk_tree_path_get_depth (path);
14553
14554   _gtk_tree_view_find_node (tree_view,
14555                             path,
14556                             &tree,
14557                             &node);
14558
14559   if (tree == NULL)
14560     return NULL;
14561
14562   if (!gtk_tree_model_get_iter (tree_view->priv->model,
14563                                 &iter,
14564                                 path))
14565     return NULL;
14566
14567   context = gtk_widget_get_style_context (widget);
14568
14569   gtk_style_context_save (context);
14570   gtk_style_context_add_region (context, GTK_STYLE_REGION_COLUMN, 0);
14571
14572   gtk_widget_style_get (widget,
14573                         "allow-rules", &allow_rules,
14574                         NULL);
14575
14576   if (allow_rules && tree_view->priv->has_rules)
14577     {
14578       GtkRegionFlags row_flags;
14579
14580       if ((_gtk_rbtree_node_get_index (tree, node) % 2))
14581         row_flags = GTK_REGION_ODD;
14582       else
14583         row_flags = GTK_REGION_EVEN;
14584
14585       gtk_style_context_add_region (context, GTK_STYLE_REGION_ROW, row_flags);
14586     }
14587
14588   is_separator = row_is_separator (tree_view, &iter, NULL);
14589
14590   cell_offset = x;
14591
14592   background_area.y = y;
14593   background_area.height = gtk_tree_view_get_row_height (tree_view, node);
14594
14595   bin_window_width = gdk_window_get_width (tree_view->priv->bin_window);
14596
14597   surface = gdk_window_create_similar_surface (tree_view->priv->bin_window,
14598                                                CAIRO_CONTENT_COLOR,
14599                                                bin_window_width + 2,
14600                                                background_area.height + 2);
14601
14602   cr = cairo_create (surface);
14603
14604   gtk_render_background (context, cr, 0, 0,
14605                          bin_window_width + 2,
14606                          background_area.height + 2);
14607
14608   rtl = gtk_widget_get_direction (GTK_WIDGET (tree_view)) == GTK_TEXT_DIR_RTL;
14609
14610   for (list = (rtl ? g_list_last (tree_view->priv->columns) : g_list_first (tree_view->priv->columns));
14611       list;
14612       list = (rtl ? list->prev : list->next))
14613     {
14614       GtkTreeViewColumn *column = list->data;
14615       GdkRectangle cell_area;
14616       gint vertical_separator;
14617
14618       if (!gtk_tree_view_column_get_visible (column))
14619         continue;
14620
14621       gtk_tree_view_column_cell_set_cell_data (column, tree_view->priv->model, &iter,
14622                                                GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_PARENT),
14623                                                node->children?TRUE:FALSE);
14624
14625       background_area.x = cell_offset;
14626       background_area.width = gtk_tree_view_column_get_width (column);
14627
14628       gtk_widget_style_get (widget,
14629                             "vertical-separator", &vertical_separator,
14630                             NULL);
14631
14632       cell_area = background_area;
14633
14634       cell_area.y += vertical_separator / 2;
14635       cell_area.height -= vertical_separator;
14636
14637       if (gtk_tree_view_is_expander_column (tree_view, column))
14638         {
14639           if (!rtl)
14640             cell_area.x += (depth - 1) * tree_view->priv->level_indentation;
14641           cell_area.width -= (depth - 1) * tree_view->priv->level_indentation;
14642
14643           if (gtk_tree_view_draw_expanders (tree_view))
14644             {
14645               int expander_size = gtk_tree_view_get_expander_size (tree_view);
14646               if (!rtl)
14647                 cell_area.x += depth * expander_size;
14648               cell_area.width -= depth * expander_size;
14649             }
14650         }
14651
14652       if (gtk_tree_view_column_cell_is_visible (column))
14653         {
14654           if (is_separator)
14655             {
14656               gtk_style_context_save (context);
14657               gtk_style_context_add_class (context, GTK_STYLE_CLASS_SEPARATOR);
14658
14659               gtk_render_line (context, cr,
14660                                cell_area.x,
14661                                cell_area.y + cell_area.height / 2,
14662                                cell_area.x + cell_area.width,
14663                                cell_area.y + cell_area.height / 2);
14664
14665               gtk_style_context_restore (context);
14666             }
14667           else
14668             {
14669               _gtk_tree_view_column_cell_render (column,
14670                                                  cr,
14671                                                  &background_area,
14672                                                  &cell_area,
14673                                                  0, FALSE);
14674             }
14675         }
14676       cell_offset += gtk_tree_view_column_get_width (column);
14677     }
14678
14679   cairo_set_source_rgb (cr, 0, 0, 0);
14680   cairo_rectangle (cr,
14681                    0.5, 0.5,
14682                    bin_window_width + 1,
14683                    background_area.height + 1);
14684   cairo_set_line_width (cr, 1.0);
14685   cairo_stroke (cr);
14686
14687   cairo_destroy (cr);
14688
14689   cairo_surface_set_device_offset (surface, 2, 2);
14690
14691   gtk_style_context_restore (context);
14692
14693   return surface;
14694 }
14695
14696
14697 /**
14698  * gtk_tree_view_set_destroy_count_func:
14699  * @tree_view: A #GtkTreeView
14700  * @func: (allow-none): Function to be called when a view row is destroyed, or %NULL
14701  * @data: (allow-none): User data to be passed to @func, or %NULL
14702  * @destroy: (allow-none): Destroy notifier for @data, or %NULL
14703  *
14704  * This function should almost never be used.  It is meant for private use by
14705  * ATK for determining the number of visible children that are removed when the
14706  * user collapses a row, or a row is deleted.
14707  *
14708  * Deprecated: 3.4: Accessibility does not need the function anymore.
14709  **/
14710 void
14711 gtk_tree_view_set_destroy_count_func (GtkTreeView             *tree_view,
14712                                       GtkTreeDestroyCountFunc  func,
14713                                       gpointer                 data,
14714                                       GDestroyNotify           destroy)
14715 {
14716   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
14717
14718   if (tree_view->priv->destroy_count_destroy)
14719     tree_view->priv->destroy_count_destroy (tree_view->priv->destroy_count_data);
14720
14721   tree_view->priv->destroy_count_func = func;
14722   tree_view->priv->destroy_count_data = data;
14723   tree_view->priv->destroy_count_destroy = destroy;
14724 }
14725
14726
14727 /*
14728  * Interactive search
14729  */
14730
14731 /**
14732  * gtk_tree_view_set_enable_search:
14733  * @tree_view: A #GtkTreeView
14734  * @enable_search: %TRUE, if the user can search interactively
14735  *
14736  * If @enable_search is set, then the user can type in text to search through
14737  * the tree interactively (this is sometimes called "typeahead find").
14738  *
14739  * Note that even if this is %FALSE, the user can still initiate a search
14740  * using the "start-interactive-search" key binding.
14741  */
14742 void
14743 gtk_tree_view_set_enable_search (GtkTreeView *tree_view,
14744                                  gboolean     enable_search)
14745 {
14746   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
14747
14748   enable_search = !!enable_search;
14749
14750   if (tree_view->priv->enable_search != enable_search)
14751     {
14752        tree_view->priv->enable_search = enable_search;
14753        g_object_notify (G_OBJECT (tree_view), "enable-search");
14754     }
14755 }
14756
14757 /**
14758  * gtk_tree_view_get_enable_search:
14759  * @tree_view: A #GtkTreeView
14760  *
14761  * Returns whether or not the tree allows to start interactive searching
14762  * by typing in text.
14763  *
14764  * Return value: whether or not to let the user search interactively
14765  */
14766 gboolean
14767 gtk_tree_view_get_enable_search (GtkTreeView *tree_view)
14768 {
14769   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), FALSE);
14770
14771   return tree_view->priv->enable_search;
14772 }
14773
14774
14775 /**
14776  * gtk_tree_view_get_search_column:
14777  * @tree_view: A #GtkTreeView
14778  *
14779  * Gets the column searched on by the interactive search code.
14780  *
14781  * Return value: the column the interactive search code searches in.
14782  */
14783 gint
14784 gtk_tree_view_get_search_column (GtkTreeView *tree_view)
14785 {
14786   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), -1);
14787
14788   return (tree_view->priv->search_column);
14789 }
14790
14791 /**
14792  * gtk_tree_view_set_search_column:
14793  * @tree_view: A #GtkTreeView
14794  * @column: the column of the model to search in, or -1 to disable searching
14795  *
14796  * Sets @column as the column where the interactive search code should
14797  * search in for the current model.
14798  *
14799  * If the search column is set, users can use the "start-interactive-search"
14800  * key binding to bring up search popup. The enable-search property controls
14801  * whether simply typing text will also start an interactive search.
14802  *
14803  * Note that @column refers to a column of the current model. The search
14804  * column is reset to -1 when the model is changed.
14805  */
14806 void
14807 gtk_tree_view_set_search_column (GtkTreeView *tree_view,
14808                                  gint         column)
14809 {
14810   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
14811   g_return_if_fail (column >= -1);
14812
14813   if (tree_view->priv->search_column == column)
14814     return;
14815
14816   tree_view->priv->search_column = column;
14817   g_object_notify (G_OBJECT (tree_view), "search-column");
14818 }
14819
14820 /**
14821  * gtk_tree_view_get_search_equal_func: (skip)
14822  * @tree_view: A #GtkTreeView
14823  *
14824  * Returns the compare function currently in use.
14825  *
14826  * Return value: the currently used compare function for the search code.
14827  */
14828
14829 GtkTreeViewSearchEqualFunc
14830 gtk_tree_view_get_search_equal_func (GtkTreeView *tree_view)
14831 {
14832   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), NULL);
14833
14834   return tree_view->priv->search_equal_func;
14835 }
14836
14837 /**
14838  * gtk_tree_view_set_search_equal_func:
14839  * @tree_view: A #GtkTreeView
14840  * @search_equal_func: the compare function to use during the search
14841  * @search_user_data: (allow-none): user data to pass to @search_equal_func, or %NULL
14842  * @search_destroy: (allow-none): Destroy notifier for @search_user_data, or %NULL
14843  *
14844  * Sets the compare function for the interactive search capabilities; note
14845  * that somewhat like strcmp() returning 0 for equality
14846  * #GtkTreeViewSearchEqualFunc returns %FALSE on matches.
14847  **/
14848 void
14849 gtk_tree_view_set_search_equal_func (GtkTreeView                *tree_view,
14850                                      GtkTreeViewSearchEqualFunc  search_equal_func,
14851                                      gpointer                    search_user_data,
14852                                      GDestroyNotify              search_destroy)
14853 {
14854   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
14855   g_return_if_fail (search_equal_func != NULL);
14856
14857   if (tree_view->priv->search_destroy)
14858     tree_view->priv->search_destroy (tree_view->priv->search_user_data);
14859
14860   tree_view->priv->search_equal_func = search_equal_func;
14861   tree_view->priv->search_user_data = search_user_data;
14862   tree_view->priv->search_destroy = search_destroy;
14863   if (tree_view->priv->search_equal_func == NULL)
14864     tree_view->priv->search_equal_func = gtk_tree_view_search_equal_func;
14865 }
14866
14867 /**
14868  * gtk_tree_view_get_search_entry:
14869  * @tree_view: A #GtkTreeView
14870  *
14871  * Returns the #GtkEntry which is currently in use as interactive search
14872  * entry for @tree_view.  In case the built-in entry is being used, %NULL
14873  * will be returned.
14874  *
14875  * Return value: (transfer none): the entry currently in use as search entry.
14876  *
14877  * Since: 2.10
14878  */
14879 GtkEntry *
14880 gtk_tree_view_get_search_entry (GtkTreeView *tree_view)
14881 {
14882   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), NULL);
14883
14884   if (tree_view->priv->search_custom_entry_set)
14885     return GTK_ENTRY (tree_view->priv->search_entry);
14886
14887   return NULL;
14888 }
14889
14890 /**
14891  * gtk_tree_view_set_search_entry:
14892  * @tree_view: A #GtkTreeView
14893  * @entry: (allow-none): the entry the interactive search code of @tree_view should use or %NULL
14894  *
14895  * Sets the entry which the interactive search code will use for this
14896  * @tree_view.  This is useful when you want to provide a search entry
14897  * in our interface at all time at a fixed position.  Passing %NULL for
14898  * @entry will make the interactive search code use the built-in popup
14899  * entry again.
14900  *
14901  * Since: 2.10
14902  */
14903 void
14904 gtk_tree_view_set_search_entry (GtkTreeView *tree_view,
14905                                 GtkEntry    *entry)
14906 {
14907   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
14908   g_return_if_fail (entry == NULL || GTK_IS_ENTRY (entry));
14909
14910   if (tree_view->priv->search_custom_entry_set)
14911     {
14912       if (tree_view->priv->search_entry_changed_id)
14913         {
14914           g_signal_handler_disconnect (tree_view->priv->search_entry,
14915                                        tree_view->priv->search_entry_changed_id);
14916           tree_view->priv->search_entry_changed_id = 0;
14917         }
14918       g_signal_handlers_disconnect_by_func (tree_view->priv->search_entry,
14919                                             G_CALLBACK (gtk_tree_view_search_key_press_event),
14920                                             tree_view);
14921
14922       g_object_unref (tree_view->priv->search_entry);
14923     }
14924   else if (tree_view->priv->search_window)
14925     {
14926       gtk_widget_destroy (tree_view->priv->search_window);
14927
14928       tree_view->priv->search_window = NULL;
14929     }
14930
14931   if (entry)
14932     {
14933       tree_view->priv->search_entry = g_object_ref (entry);
14934       tree_view->priv->search_custom_entry_set = TRUE;
14935
14936       if (tree_view->priv->search_entry_changed_id == 0)
14937         {
14938           tree_view->priv->search_entry_changed_id =
14939             g_signal_connect (tree_view->priv->search_entry, "changed",
14940                               G_CALLBACK (gtk_tree_view_search_init),
14941                               tree_view);
14942         }
14943
14944         g_signal_connect (tree_view->priv->search_entry, "key-press-event",
14945                           G_CALLBACK (gtk_tree_view_search_key_press_event),
14946                           tree_view);
14947
14948         gtk_tree_view_search_init (tree_view->priv->search_entry, tree_view);
14949     }
14950   else
14951     {
14952       tree_view->priv->search_entry = NULL;
14953       tree_view->priv->search_custom_entry_set = FALSE;
14954     }
14955 }
14956
14957 /**
14958  * gtk_tree_view_set_search_position_func:
14959  * @tree_view: A #GtkTreeView
14960  * @func: (allow-none): the function to use to position the search dialog, or %NULL
14961  *    to use the default search position function
14962  * @data: (allow-none): user data to pass to @func, or %NULL
14963  * @destroy: (allow-none): Destroy notifier for @data, or %NULL
14964  *
14965  * Sets the function to use when positioning the search dialog.
14966  *
14967  * Since: 2.10
14968  **/
14969 void
14970 gtk_tree_view_set_search_position_func (GtkTreeView                   *tree_view,
14971                                         GtkTreeViewSearchPositionFunc  func,
14972                                         gpointer                       user_data,
14973                                         GDestroyNotify                 destroy)
14974 {
14975   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
14976
14977   if (tree_view->priv->search_position_destroy)
14978     tree_view->priv->search_position_destroy (tree_view->priv->search_position_user_data);
14979
14980   tree_view->priv->search_position_func = func;
14981   tree_view->priv->search_position_user_data = user_data;
14982   tree_view->priv->search_position_destroy = destroy;
14983   if (tree_view->priv->search_position_func == NULL)
14984     tree_view->priv->search_position_func = gtk_tree_view_search_position_func;
14985 }
14986
14987 /**
14988  * gtk_tree_view_get_search_position_func: (skip)
14989  * @tree_view: A #GtkTreeView
14990  *
14991  * Returns the positioning function currently in use.
14992  *
14993  * Return value: the currently used function for positioning the search dialog.
14994  *
14995  * Since: 2.10
14996  */
14997 GtkTreeViewSearchPositionFunc
14998 gtk_tree_view_get_search_position_func (GtkTreeView *tree_view)
14999 {
15000   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), NULL);
15001
15002   return tree_view->priv->search_position_func;
15003 }
15004
15005
15006 static void
15007 gtk_tree_view_search_dialog_hide (GtkWidget   *search_dialog,
15008                                   GtkTreeView *tree_view,
15009                                   GdkDevice   *device)
15010 {
15011   if (tree_view->priv->disable_popdown)
15012     return;
15013
15014   if (tree_view->priv->search_entry_changed_id)
15015     {
15016       g_signal_handler_disconnect (tree_view->priv->search_entry,
15017                                    tree_view->priv->search_entry_changed_id);
15018       tree_view->priv->search_entry_changed_id = 0;
15019     }
15020   if (tree_view->priv->typeselect_flush_timeout)
15021     {
15022       g_source_remove (tree_view->priv->typeselect_flush_timeout);
15023       tree_view->priv->typeselect_flush_timeout = 0;
15024     }
15025
15026   if (gtk_widget_get_visible (search_dialog))
15027     {
15028       /* send focus-in event */
15029       send_focus_change (GTK_WIDGET (tree_view->priv->search_entry), device, FALSE);
15030       gtk_widget_hide (search_dialog);
15031       gtk_entry_set_text (GTK_ENTRY (tree_view->priv->search_entry), "");
15032       send_focus_change (GTK_WIDGET (tree_view), device, TRUE);
15033     }
15034 }
15035
15036 static void
15037 gtk_tree_view_search_position_func (GtkTreeView *tree_view,
15038                                     GtkWidget   *search_dialog,
15039                                     gpointer     user_data)
15040 {
15041   gint x, y;
15042   gint tree_x, tree_y;
15043   gint tree_width, tree_height;
15044   GdkWindow *tree_window = gtk_widget_get_window (GTK_WIDGET (tree_view));
15045   GdkScreen *screen = gdk_window_get_screen (tree_window);
15046   GtkRequisition requisition;
15047   gint monitor_num;
15048   GdkRectangle monitor;
15049
15050   monitor_num = gdk_screen_get_monitor_at_window (screen, tree_window);
15051   gdk_screen_get_monitor_workarea (screen, monitor_num, &monitor);
15052
15053   gtk_widget_realize (search_dialog);
15054
15055   gdk_window_get_origin (tree_window, &tree_x, &tree_y);
15056   tree_width = gdk_window_get_width (tree_window);
15057   tree_height = gdk_window_get_height (tree_window);
15058   gtk_widget_get_preferred_size (search_dialog, &requisition, NULL);
15059
15060   if (tree_x + tree_width > gdk_screen_get_width (screen))
15061     x = gdk_screen_get_width (screen) - requisition.width;
15062   else if (tree_x + tree_width - requisition.width < 0)
15063     x = 0;
15064   else
15065     x = tree_x + tree_width - requisition.width;
15066
15067   if (tree_y + tree_height + requisition.height > gdk_screen_get_height (screen))
15068     y = gdk_screen_get_height (screen) - requisition.height;
15069   else if (tree_y + tree_height < 0) /* isn't really possible ... */
15070     y = 0;
15071   else
15072     y = tree_y + tree_height;
15073
15074   gtk_window_move (GTK_WINDOW (search_dialog), x, y);
15075 }
15076
15077 static void
15078 gtk_tree_view_search_disable_popdown (GtkEntry *entry,
15079                                       GtkMenu  *menu,
15080                                       gpointer  data)
15081 {
15082   GtkTreeView *tree_view = (GtkTreeView *)data;
15083
15084   tree_view->priv->disable_popdown = 1;
15085   g_signal_connect (menu, "hide",
15086                     G_CALLBACK (gtk_tree_view_search_enable_popdown), data);
15087 }
15088
15089 /* Because we're visible but offscreen, we just set a flag in the preedit
15090  * callback.
15091  */
15092 static void
15093 gtk_tree_view_search_preedit_changed (GtkIMContext *im_context,
15094                                       GtkTreeView  *tree_view)
15095 {
15096   tree_view->priv->imcontext_changed = 1;
15097   if (tree_view->priv->typeselect_flush_timeout)
15098     {
15099       g_source_remove (tree_view->priv->typeselect_flush_timeout);
15100       tree_view->priv->typeselect_flush_timeout =
15101         gdk_threads_add_timeout (GTK_TREE_VIEW_SEARCH_DIALOG_TIMEOUT,
15102                        (GSourceFunc) gtk_tree_view_search_entry_flush_timeout,
15103                        tree_view);
15104     }
15105
15106 }
15107
15108 static void
15109 gtk_tree_view_search_activate (GtkEntry    *entry,
15110                                GtkTreeView *tree_view)
15111 {
15112   GtkTreePath *path;
15113
15114   gtk_tree_view_search_dialog_hide (tree_view->priv->search_window,
15115                                     tree_view,
15116                                     gtk_get_current_event_device ());
15117
15118   /* If we have a row selected and it's the cursor row, we activate
15119    * the row XXX */
15120   if (tree_view->priv->cursor_node &&
15121       GTK_RBNODE_FLAG_SET (tree_view->priv->cursor_node, GTK_RBNODE_IS_SELECTED))
15122     {
15123       path = _gtk_tree_path_new_from_rbtree (tree_view->priv->cursor_tree,
15124                                              tree_view->priv->cursor_node);
15125
15126       gtk_tree_view_row_activated (tree_view, path, tree_view->priv->focus_column);
15127
15128       gtk_tree_path_free (path);
15129     }
15130 }
15131
15132 static gboolean
15133 gtk_tree_view_real_search_enable_popdown (gpointer data)
15134 {
15135   GtkTreeView *tree_view = (GtkTreeView *)data;
15136
15137   tree_view->priv->disable_popdown = 0;
15138
15139   return FALSE;
15140 }
15141
15142 static void
15143 gtk_tree_view_search_enable_popdown (GtkWidget *widget,
15144                                      gpointer   data)
15145 {
15146   gdk_threads_add_timeout_full (G_PRIORITY_HIGH, 200, gtk_tree_view_real_search_enable_popdown, g_object_ref (data), g_object_unref);
15147 }
15148
15149 static gboolean
15150 gtk_tree_view_search_delete_event (GtkWidget *widget,
15151                                    GdkEventAny *event,
15152                                    GtkTreeView *tree_view)
15153 {
15154   g_return_val_if_fail (GTK_IS_WIDGET (widget), FALSE);
15155
15156   gtk_tree_view_search_dialog_hide (widget, tree_view, NULL);
15157
15158   return TRUE;
15159 }
15160
15161 static gboolean
15162 gtk_tree_view_search_button_press_event (GtkWidget *widget,
15163                                          GdkEventButton *event,
15164                                          GtkTreeView *tree_view)
15165 {
15166   GdkDevice *keyb_device;
15167
15168   g_return_val_if_fail (GTK_IS_WIDGET (widget), FALSE);
15169
15170   keyb_device = gdk_device_get_associated_device (event->device);
15171   gtk_tree_view_search_dialog_hide (widget, tree_view, keyb_device);
15172
15173   if (event->window == tree_view->priv->bin_window)
15174     gtk_tree_view_button_press (GTK_WIDGET (tree_view), event);
15175
15176   return TRUE;
15177 }
15178
15179 static gboolean
15180 gtk_tree_view_search_scroll_event (GtkWidget *widget,
15181                                    GdkEventScroll *event,
15182                                    GtkTreeView *tree_view)
15183 {
15184   gboolean retval = FALSE;
15185
15186   if (event->direction == GDK_SCROLL_UP)
15187     {
15188       gtk_tree_view_search_move (widget, tree_view, TRUE);
15189       retval = TRUE;
15190     }
15191   else if (event->direction == GDK_SCROLL_DOWN)
15192     {
15193       gtk_tree_view_search_move (widget, tree_view, FALSE);
15194       retval = TRUE;
15195     }
15196
15197   /* renew the flush timeout */
15198   if (retval && tree_view->priv->typeselect_flush_timeout
15199       && !tree_view->priv->search_custom_entry_set)
15200     {
15201       g_source_remove (tree_view->priv->typeselect_flush_timeout);
15202       tree_view->priv->typeselect_flush_timeout =
15203         gdk_threads_add_timeout (GTK_TREE_VIEW_SEARCH_DIALOG_TIMEOUT,
15204                        (GSourceFunc) gtk_tree_view_search_entry_flush_timeout,
15205                        tree_view);
15206     }
15207
15208   return retval;
15209 }
15210
15211 static gboolean
15212 gtk_tree_view_search_key_press_event (GtkWidget *widget,
15213                                       GdkEventKey *event,
15214                                       GtkTreeView *tree_view)
15215 {
15216   GdkModifierType default_accel;
15217   gboolean        retval = FALSE;
15218
15219   g_return_val_if_fail (GTK_IS_WIDGET (widget), FALSE);
15220   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), FALSE);
15221
15222   /* close window and cancel the search */
15223   if (!tree_view->priv->search_custom_entry_set
15224       && (event->keyval == GDK_KEY_Escape ||
15225           event->keyval == GDK_KEY_Tab ||
15226             event->keyval == GDK_KEY_KP_Tab ||
15227             event->keyval == GDK_KEY_ISO_Left_Tab))
15228     {
15229       gtk_tree_view_search_dialog_hide (widget, tree_view,
15230                                         gdk_event_get_device ((GdkEvent *) event));
15231       return TRUE;
15232     }
15233
15234   default_accel = gtk_widget_get_modifier_mask (widget,
15235                                                 GDK_MODIFIER_INTENT_PRIMARY_ACCELERATOR);
15236
15237   /* select previous matching iter */
15238   if (event->keyval == GDK_KEY_Up || event->keyval == GDK_KEY_KP_Up)
15239     {
15240       if (!gtk_tree_view_search_move (widget, tree_view, TRUE))
15241         gtk_widget_error_bell (widget);
15242
15243       retval = TRUE;
15244     }
15245
15246   if (((event->state & (default_accel | GDK_SHIFT_MASK)) == (default_accel | GDK_SHIFT_MASK))
15247       && (event->keyval == GDK_KEY_g || event->keyval == GDK_KEY_G))
15248     {
15249       if (!gtk_tree_view_search_move (widget, tree_view, TRUE))
15250         gtk_widget_error_bell (widget);
15251
15252       retval = TRUE;
15253     }
15254
15255   /* select next matching iter */
15256   if (event->keyval == GDK_KEY_Down || event->keyval == GDK_KEY_KP_Down)
15257     {
15258       if (!gtk_tree_view_search_move (widget, tree_view, FALSE))
15259         gtk_widget_error_bell (widget);
15260
15261       retval = TRUE;
15262     }
15263
15264   if (((event->state & (default_accel | GDK_SHIFT_MASK)) == default_accel)
15265       && (event->keyval == GDK_KEY_g || event->keyval == GDK_KEY_G))
15266     {
15267       if (!gtk_tree_view_search_move (widget, tree_view, FALSE))
15268         gtk_widget_error_bell (widget);
15269
15270       retval = TRUE;
15271     }
15272
15273   /* renew the flush timeout */
15274   if (retval && tree_view->priv->typeselect_flush_timeout
15275       && !tree_view->priv->search_custom_entry_set)
15276     {
15277       g_source_remove (tree_view->priv->typeselect_flush_timeout);
15278       tree_view->priv->typeselect_flush_timeout =
15279         gdk_threads_add_timeout (GTK_TREE_VIEW_SEARCH_DIALOG_TIMEOUT,
15280                        (GSourceFunc) gtk_tree_view_search_entry_flush_timeout,
15281                        tree_view);
15282     }
15283
15284   return retval;
15285 }
15286
15287 /*  this function returns FALSE if there is a search string but
15288  *  nothing was found, and TRUE otherwise.
15289  */
15290 static gboolean
15291 gtk_tree_view_search_move (GtkWidget   *window,
15292                            GtkTreeView *tree_view,
15293                            gboolean     up)
15294 {
15295   gboolean ret;
15296   gint len;
15297   gint count = 0;
15298   const gchar *text;
15299   GtkTreeIter iter;
15300   GtkTreeModel *model;
15301   GtkTreeSelection *selection;
15302
15303   text = gtk_entry_get_text (GTK_ENTRY (tree_view->priv->search_entry));
15304
15305   g_return_val_if_fail (text != NULL, FALSE);
15306
15307   len = strlen (text);
15308
15309   if (up && tree_view->priv->selected_iter == 1)
15310     return strlen (text) < 1;
15311
15312   len = strlen (text);
15313
15314   if (len < 1)
15315     return TRUE;
15316
15317   model = gtk_tree_view_get_model (tree_view);
15318   selection = gtk_tree_view_get_selection (tree_view);
15319
15320   /* search */
15321   gtk_tree_selection_unselect_all (selection);
15322   if (!gtk_tree_model_get_iter_first (model, &iter))
15323     return TRUE;
15324
15325   ret = gtk_tree_view_search_iter (model, selection, &iter, text,
15326                                    &count, up?((tree_view->priv->selected_iter) - 1):((tree_view->priv->selected_iter + 1)));
15327
15328   if (ret)
15329     {
15330       /* found */
15331       tree_view->priv->selected_iter += up?(-1):(1);
15332       return TRUE;
15333     }
15334   else
15335     {
15336       /* return to old iter */
15337       count = 0;
15338       gtk_tree_model_get_iter_first (model, &iter);
15339       gtk_tree_view_search_iter (model, selection,
15340                                  &iter, text,
15341                                  &count, tree_view->priv->selected_iter);
15342       return FALSE;
15343     }
15344 }
15345
15346 static gboolean
15347 gtk_tree_view_search_equal_func (GtkTreeModel *model,
15348                                  gint          column,
15349                                  const gchar  *key,
15350                                  GtkTreeIter  *iter,
15351                                  gpointer      search_data)
15352 {
15353   gboolean retval = TRUE;
15354   const gchar *str;
15355   gchar *normalized_string;
15356   gchar *normalized_key;
15357   gchar *case_normalized_string = NULL;
15358   gchar *case_normalized_key = NULL;
15359   GValue value = G_VALUE_INIT;
15360   GValue transformed = G_VALUE_INIT;
15361
15362   gtk_tree_model_get_value (model, iter, column, &value);
15363
15364   g_value_init (&transformed, G_TYPE_STRING);
15365
15366   if (!g_value_transform (&value, &transformed))
15367     {
15368       g_value_unset (&value);
15369       return TRUE;
15370     }
15371
15372   g_value_unset (&value);
15373
15374   str = g_value_get_string (&transformed);
15375   if (!str)
15376     {
15377       g_value_unset (&transformed);
15378       return TRUE;
15379     }
15380
15381   normalized_string = g_utf8_normalize (str, -1, G_NORMALIZE_ALL);
15382   normalized_key = g_utf8_normalize (key, -1, G_NORMALIZE_ALL);
15383
15384   if (normalized_string && normalized_key)
15385     {
15386       case_normalized_string = g_utf8_casefold (normalized_string, -1);
15387       case_normalized_key = g_utf8_casefold (normalized_key, -1);
15388
15389       if (strncmp (case_normalized_key, case_normalized_string, strlen (case_normalized_key)) == 0)
15390         retval = FALSE;
15391     }
15392
15393   g_value_unset (&transformed);
15394   g_free (normalized_key);
15395   g_free (normalized_string);
15396   g_free (case_normalized_key);
15397   g_free (case_normalized_string);
15398
15399   return retval;
15400 }
15401
15402 static gboolean
15403 gtk_tree_view_search_iter (GtkTreeModel     *model,
15404                            GtkTreeSelection *selection,
15405                            GtkTreeIter      *iter,
15406                            const gchar      *text,
15407                            gint             *count,
15408                            gint              n)
15409 {
15410   GtkRBTree *tree = NULL;
15411   GtkRBNode *node = NULL;
15412   GtkTreePath *path;
15413
15414   GtkTreeView *tree_view = gtk_tree_selection_get_tree_view (selection);
15415
15416   path = gtk_tree_model_get_path (model, iter);
15417   _gtk_tree_view_find_node (tree_view, path, &tree, &node);
15418
15419   do
15420     {
15421       if (! tree_view->priv->search_equal_func (model, tree_view->priv->search_column, text, iter, tree_view->priv->search_user_data))
15422         {
15423           (*count)++;
15424           if (*count == n)
15425             {
15426               gtk_tree_view_scroll_to_cell (tree_view, path, NULL,
15427                                             TRUE, 0.5, 0.0);
15428               gtk_tree_selection_select_iter (selection, iter);
15429               gtk_tree_view_real_set_cursor (tree_view, path, CLAMP_NODE);
15430
15431               if (path)
15432                 gtk_tree_path_free (path);
15433
15434               return TRUE;
15435             }
15436         }
15437
15438       if (node->children)
15439         {
15440           gboolean has_child;
15441           GtkTreeIter tmp;
15442
15443           tree = node->children;
15444           node = _gtk_rbtree_first (tree);
15445
15446           tmp = *iter;
15447           has_child = gtk_tree_model_iter_children (model, iter, &tmp);
15448           gtk_tree_path_down (path);
15449
15450           /* sanity check */
15451           TREE_VIEW_INTERNAL_ASSERT (has_child, FALSE);
15452         }
15453       else
15454         {
15455           gboolean done = FALSE;
15456
15457           do
15458             {
15459               node = _gtk_rbtree_next (tree, node);
15460
15461               if (node)
15462                 {
15463                   gboolean has_next;
15464
15465                   has_next = gtk_tree_model_iter_next (model, iter);
15466
15467                   done = TRUE;
15468                   gtk_tree_path_next (path);
15469
15470                   /* sanity check */
15471                   TREE_VIEW_INTERNAL_ASSERT (has_next, FALSE);
15472                 }
15473               else
15474                 {
15475                   gboolean has_parent;
15476                   GtkTreeIter tmp_iter = *iter;
15477
15478                   node = tree->parent_node;
15479                   tree = tree->parent_tree;
15480
15481                   if (!tree)
15482                     {
15483                       if (path)
15484                         gtk_tree_path_free (path);
15485
15486                       /* we've run out of tree, done with this func */
15487                       return FALSE;
15488                     }
15489
15490                   has_parent = gtk_tree_model_iter_parent (model,
15491                                                            iter,
15492                                                            &tmp_iter);
15493                   gtk_tree_path_up (path);
15494
15495                   /* sanity check */
15496                   TREE_VIEW_INTERNAL_ASSERT (has_parent, FALSE);
15497                 }
15498             }
15499           while (!done);
15500         }
15501     }
15502   while (1);
15503
15504   return FALSE;
15505 }
15506
15507 static void
15508 gtk_tree_view_search_init (GtkWidget   *entry,
15509                            GtkTreeView *tree_view)
15510 {
15511   gint ret;
15512   gint count = 0;
15513   const gchar *text;
15514   GtkTreeIter iter;
15515   GtkTreeModel *model;
15516   GtkTreeSelection *selection;
15517
15518   g_return_if_fail (GTK_IS_ENTRY (entry));
15519   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
15520
15521   text = gtk_entry_get_text (GTK_ENTRY (entry));
15522
15523   model = gtk_tree_view_get_model (tree_view);
15524   selection = gtk_tree_view_get_selection (tree_view);
15525
15526   /* search */
15527   gtk_tree_selection_unselect_all (selection);
15528   if (tree_view->priv->typeselect_flush_timeout
15529       && !tree_view->priv->search_custom_entry_set)
15530     {
15531       g_source_remove (tree_view->priv->typeselect_flush_timeout);
15532       tree_view->priv->typeselect_flush_timeout =
15533         gdk_threads_add_timeout (GTK_TREE_VIEW_SEARCH_DIALOG_TIMEOUT,
15534                        (GSourceFunc) gtk_tree_view_search_entry_flush_timeout,
15535                        tree_view);
15536     }
15537
15538   if (*text == '\0')
15539     return;
15540
15541   if (!gtk_tree_model_get_iter_first (model, &iter))
15542     return;
15543
15544   ret = gtk_tree_view_search_iter (model, selection,
15545                                    &iter, text,
15546                                    &count, 1);
15547
15548   if (ret)
15549     tree_view->priv->selected_iter = 1;
15550 }
15551
15552 void
15553 _gtk_tree_view_remove_editable (GtkTreeView       *tree_view,
15554                                 GtkTreeViewColumn *column,
15555                                 GtkCellEditable   *cell_editable)
15556 {
15557   if (tree_view->priv->edited_column == NULL)
15558     return;
15559
15560   g_return_if_fail (column == tree_view->priv->edited_column);
15561
15562   tree_view->priv->edited_column = NULL;
15563
15564   if (gtk_widget_has_focus (GTK_WIDGET (cell_editable)))
15565     gtk_widget_grab_focus (GTK_WIDGET (tree_view));
15566
15567   gtk_container_remove (GTK_CONTAINER (tree_view),
15568                         GTK_WIDGET (cell_editable));
15569
15570   /* FIXME should only redraw a single node */
15571   gtk_widget_queue_draw (GTK_WIDGET (tree_view));
15572 }
15573
15574 static gboolean
15575 gtk_tree_view_start_editing (GtkTreeView *tree_view,
15576                              GtkTreePath *cursor_path,
15577                              gboolean     edit_only)
15578 {
15579   GtkTreeIter iter;
15580   GdkRectangle cell_area;
15581   GtkTreeViewColumn *focus_column;
15582   guint flags = 0; /* can be 0, as the flags are primarily for rendering */
15583   gint retval = FALSE;
15584   GtkRBTree *cursor_tree;
15585   GtkRBNode *cursor_node;
15586
15587   g_assert (tree_view->priv->focus_column);
15588   focus_column = tree_view->priv->focus_column;
15589
15590   if (!gtk_widget_get_realized (GTK_WIDGET (tree_view)))
15591     return FALSE;
15592
15593   if (_gtk_tree_view_find_node (tree_view, cursor_path, &cursor_tree, &cursor_node) ||
15594       cursor_node == NULL)
15595     return FALSE;
15596
15597   gtk_tree_model_get_iter (tree_view->priv->model, &iter, cursor_path);
15598
15599   validate_row (tree_view, cursor_tree, cursor_node, &iter, cursor_path);
15600
15601   gtk_tree_view_column_cell_set_cell_data (focus_column,
15602                                            tree_view->priv->model,
15603                                            &iter,
15604                                            GTK_RBNODE_FLAG_SET (cursor_node, GTK_RBNODE_IS_PARENT),
15605                                            cursor_node->children ? TRUE : FALSE);
15606   gtk_tree_view_get_cell_area (tree_view,
15607                                cursor_path,
15608                                focus_column,
15609                                &cell_area);
15610
15611   if (gtk_cell_area_activate (gtk_cell_layout_get_area (GTK_CELL_LAYOUT (focus_column)),
15612                               _gtk_tree_view_column_get_context (focus_column),
15613                               GTK_WIDGET (tree_view),
15614                               &cell_area,
15615                               flags, edit_only))
15616     retval = TRUE;
15617
15618   return retval;
15619 }
15620
15621 void
15622 _gtk_tree_view_add_editable (GtkTreeView       *tree_view,
15623                              GtkTreeViewColumn *column,
15624                              GtkTreePath       *path,
15625                              GtkCellEditable   *cell_editable,
15626                              GdkRectangle      *cell_area)
15627 {
15628   gint pre_val = gtk_adjustment_get_value (tree_view->priv->vadjustment);
15629   GtkRequisition requisition;
15630
15631   tree_view->priv->edited_column = column;
15632
15633   gtk_tree_view_real_set_cursor (tree_view, path, CLAMP_NODE);
15634   cell_area->y += pre_val - (int)gtk_adjustment_get_value (tree_view->priv->vadjustment);
15635
15636   gtk_widget_get_preferred_size (GTK_WIDGET (cell_editable),
15637                                  &requisition, NULL);
15638
15639   tree_view->priv->draw_keyfocus = TRUE;
15640
15641   if (requisition.height < cell_area->height)
15642     {
15643       gint diff = cell_area->height - requisition.height;
15644       gtk_tree_view_put (tree_view,
15645                          GTK_WIDGET (cell_editable),
15646                          cell_area->x, cell_area->y + diff/2,
15647                          cell_area->width, requisition.height);
15648     }
15649   else
15650     {
15651       gtk_tree_view_put (tree_view,
15652                          GTK_WIDGET (cell_editable),
15653                          cell_area->x, cell_area->y,
15654                          cell_area->width, cell_area->height);
15655     }
15656 }
15657
15658 static void
15659 gtk_tree_view_stop_editing (GtkTreeView *tree_view,
15660                             gboolean     cancel_editing)
15661 {
15662   GtkTreeViewColumn *column;
15663
15664   if (tree_view->priv->edited_column == NULL)
15665     return;
15666
15667   /*
15668    * This is very evil. We need to do this, because
15669    * gtk_cell_editable_editing_done may trigger gtk_tree_view_row_changed
15670    * later on. If gtk_tree_view_row_changed notices
15671    * tree_view->priv->edited_column != NULL, it'll call
15672    * gtk_tree_view_stop_editing again. Bad things will happen then.
15673    *
15674    * Please read that again if you intend to modify anything here.
15675    */
15676
15677   column = tree_view->priv->edited_column;
15678   gtk_cell_area_stop_editing (gtk_cell_layout_get_area (GTK_CELL_LAYOUT (column)), cancel_editing);
15679   tree_view->priv->edited_column = NULL;
15680 }
15681
15682
15683 /**
15684  * gtk_tree_view_set_hover_selection:
15685  * @tree_view: a #GtkTreeView
15686  * @hover: %TRUE to enable hover selection mode
15687  *
15688  * Enables or disables the hover selection mode of @tree_view.
15689  * Hover selection makes the selected row follow the pointer.
15690  * Currently, this works only for the selection modes
15691  * %GTK_SELECTION_SINGLE and %GTK_SELECTION_BROWSE.
15692  *
15693  * Since: 2.6
15694  **/
15695 void
15696 gtk_tree_view_set_hover_selection (GtkTreeView *tree_view,
15697                                    gboolean     hover)
15698 {
15699   hover = hover != FALSE;
15700
15701   if (hover != tree_view->priv->hover_selection)
15702     {
15703       tree_view->priv->hover_selection = hover;
15704
15705       g_object_notify (G_OBJECT (tree_view), "hover-selection");
15706     }
15707 }
15708
15709 /**
15710  * gtk_tree_view_get_hover_selection:
15711  * @tree_view: a #GtkTreeView
15712  *
15713  * Returns whether hover selection mode is turned on for @tree_view.
15714  *
15715  * Return value: %TRUE if @tree_view is in hover selection mode
15716  *
15717  * Since: 2.6
15718  **/
15719 gboolean
15720 gtk_tree_view_get_hover_selection (GtkTreeView *tree_view)
15721 {
15722   return tree_view->priv->hover_selection;
15723 }
15724
15725 /**
15726  * gtk_tree_view_set_hover_expand:
15727  * @tree_view: a #GtkTreeView
15728  * @expand: %TRUE to enable hover selection mode
15729  *
15730  * Enables or disables the hover expansion mode of @tree_view.
15731  * Hover expansion makes rows expand or collapse if the pointer
15732  * moves over them.
15733  *
15734  * Since: 2.6
15735  **/
15736 void
15737 gtk_tree_view_set_hover_expand (GtkTreeView *tree_view,
15738                                 gboolean     expand)
15739 {
15740   expand = expand != FALSE;
15741
15742   if (expand != tree_view->priv->hover_expand)
15743     {
15744       tree_view->priv->hover_expand = expand;
15745
15746       g_object_notify (G_OBJECT (tree_view), "hover-expand");
15747     }
15748 }
15749
15750 /**
15751  * gtk_tree_view_get_hover_expand:
15752  * @tree_view: a #GtkTreeView
15753  *
15754  * Returns whether hover expansion mode is turned on for @tree_view.
15755  *
15756  * Return value: %TRUE if @tree_view is in hover expansion mode
15757  *
15758  * Since: 2.6
15759  **/
15760 gboolean
15761 gtk_tree_view_get_hover_expand (GtkTreeView *tree_view)
15762 {
15763   return tree_view->priv->hover_expand;
15764 }
15765
15766 /**
15767  * gtk_tree_view_set_rubber_banding:
15768  * @tree_view: a #GtkTreeView
15769  * @enable: %TRUE to enable rubber banding
15770  *
15771  * Enables or disables rubber banding in @tree_view.  If the selection mode
15772  * is #GTK_SELECTION_MULTIPLE, rubber banding will allow the user to select
15773  * multiple rows by dragging the mouse.
15774  *
15775  * Since: 2.10
15776  **/
15777 void
15778 gtk_tree_view_set_rubber_banding (GtkTreeView *tree_view,
15779                                   gboolean     enable)
15780 {
15781   enable = enable != FALSE;
15782
15783   if (enable != tree_view->priv->rubber_banding_enable)
15784     {
15785       tree_view->priv->rubber_banding_enable = enable;
15786
15787       g_object_notify (G_OBJECT (tree_view), "rubber-banding");
15788     }
15789 }
15790
15791 /**
15792  * gtk_tree_view_get_rubber_banding:
15793  * @tree_view: a #GtkTreeView
15794  *
15795  * Returns whether rubber banding is turned on for @tree_view.  If the
15796  * selection mode is #GTK_SELECTION_MULTIPLE, rubber banding will allow the
15797  * user to select multiple rows by dragging the mouse.
15798  *
15799  * Return value: %TRUE if rubber banding in @tree_view is enabled.
15800  *
15801  * Since: 2.10
15802  **/
15803 gboolean
15804 gtk_tree_view_get_rubber_banding (GtkTreeView *tree_view)
15805 {
15806   return tree_view->priv->rubber_banding_enable;
15807 }
15808
15809 /**
15810  * gtk_tree_view_is_rubber_banding_active:
15811  * @tree_view: a #GtkTreeView
15812  *
15813  * Returns whether a rubber banding operation is currently being done
15814  * in @tree_view.
15815  *
15816  * Return value: %TRUE if a rubber banding operation is currently being
15817  * done in @tree_view.
15818  *
15819  * Since: 2.12
15820  **/
15821 gboolean
15822 gtk_tree_view_is_rubber_banding_active (GtkTreeView *tree_view)
15823 {
15824   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), FALSE);
15825
15826   if (tree_view->priv->rubber_banding_enable
15827       && tree_view->priv->rubber_band_status == RUBBER_BAND_ACTIVE)
15828     return TRUE;
15829
15830   return FALSE;
15831 }
15832
15833 /**
15834  * gtk_tree_view_get_row_separator_func: (skip)
15835  * @tree_view: a #GtkTreeView
15836  *
15837  * Returns the current row separator function.
15838  *
15839  * Return value: the current row separator function.
15840  *
15841  * Since: 2.6
15842  **/
15843 GtkTreeViewRowSeparatorFunc
15844 gtk_tree_view_get_row_separator_func (GtkTreeView *tree_view)
15845 {
15846   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), NULL);
15847
15848   return tree_view->priv->row_separator_func;
15849 }
15850
15851 /**
15852  * gtk_tree_view_set_row_separator_func:
15853  * @tree_view: a #GtkTreeView
15854  * @func: (allow-none): a #GtkTreeViewRowSeparatorFunc
15855  * @data: (allow-none): user data to pass to @func, or %NULL
15856  * @destroy: (allow-none): destroy notifier for @data, or %NULL
15857  *
15858  * Sets the row separator function, which is used to determine
15859  * whether a row should be drawn as a separator. If the row separator
15860  * function is %NULL, no separators are drawn. This is the default value.
15861  *
15862  * Since: 2.6
15863  **/
15864 void
15865 gtk_tree_view_set_row_separator_func (GtkTreeView                 *tree_view,
15866                                       GtkTreeViewRowSeparatorFunc  func,
15867                                       gpointer                     data,
15868                                       GDestroyNotify               destroy)
15869 {
15870   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
15871
15872   if (tree_view->priv->row_separator_destroy)
15873     tree_view->priv->row_separator_destroy (tree_view->priv->row_separator_data);
15874
15875   tree_view->priv->row_separator_func = func;
15876   tree_view->priv->row_separator_data = data;
15877   tree_view->priv->row_separator_destroy = destroy;
15878
15879   /* Have the tree recalculate heights */
15880   _gtk_rbtree_mark_invalid (tree_view->priv->tree);
15881   gtk_widget_queue_resize (GTK_WIDGET (tree_view));
15882 }
15883
15884
15885 static void
15886 gtk_tree_view_grab_notify (GtkWidget *widget,
15887                            gboolean   was_grabbed)
15888 {
15889   GtkTreeView *tree_view = GTK_TREE_VIEW (widget);
15890
15891   tree_view->priv->in_grab = !was_grabbed;
15892
15893   if (!was_grabbed)
15894     {
15895       tree_view->priv->pressed_button = -1;
15896
15897       if (tree_view->priv->rubber_band_status)
15898         gtk_tree_view_stop_rubber_band (tree_view);
15899     }
15900 }
15901
15902 static void
15903 gtk_tree_view_state_flags_changed (GtkWidget     *widget,
15904                                    GtkStateFlags  previous_state)
15905 {
15906   if (gtk_widget_get_realized (widget))
15907     gtk_tree_view_ensure_background (GTK_TREE_VIEW (widget));
15908
15909   gtk_widget_queue_draw (widget);
15910 }
15911
15912 /**
15913  * gtk_tree_view_get_grid_lines:
15914  * @tree_view: a #GtkTreeView
15915  *
15916  * Returns which grid lines are enabled in @tree_view.
15917  *
15918  * Return value: a #GtkTreeViewGridLines value indicating which grid lines
15919  * are enabled.
15920  *
15921  * Since: 2.10
15922  */
15923 GtkTreeViewGridLines
15924 gtk_tree_view_get_grid_lines (GtkTreeView *tree_view)
15925 {
15926   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), 0);
15927
15928   return tree_view->priv->grid_lines;
15929 }
15930
15931 /**
15932  * gtk_tree_view_set_grid_lines:
15933  * @tree_view: a #GtkTreeView
15934  * @grid_lines: a #GtkTreeViewGridLines value indicating which grid lines to
15935  * enable.
15936  *
15937  * Sets which grid lines to draw in @tree_view.
15938  *
15939  * Since: 2.10
15940  */
15941 void
15942 gtk_tree_view_set_grid_lines (GtkTreeView           *tree_view,
15943                               GtkTreeViewGridLines   grid_lines)
15944 {
15945   GtkTreeViewPrivate *priv;
15946   GtkWidget *widget;
15947   GtkTreeViewGridLines old_grid_lines;
15948
15949   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
15950
15951   priv = tree_view->priv;
15952   widget = GTK_WIDGET (tree_view);
15953
15954   old_grid_lines = priv->grid_lines;
15955   priv->grid_lines = grid_lines;
15956
15957   if (gtk_widget_get_realized (widget))
15958     {
15959       if (grid_lines == GTK_TREE_VIEW_GRID_LINES_NONE &&
15960           priv->grid_line_width)
15961         {
15962           priv->grid_line_width = 0;
15963         }
15964
15965       if (grid_lines != GTK_TREE_VIEW_GRID_LINES_NONE &&
15966           !priv->grid_line_width)
15967         {
15968           gint8 *dash_list;
15969
15970           gtk_widget_style_get (widget,
15971                                 "grid-line-width", &priv->grid_line_width,
15972                                 "grid-line-pattern", (gchar *)&dash_list,
15973                                 NULL);
15974
15975           if (dash_list)
15976             {
15977               priv->grid_line_dashes[0] = dash_list[0];
15978               if (dash_list[0])
15979                 priv->grid_line_dashes[1] = dash_list[1];
15980
15981               g_free (dash_list);
15982             }
15983           else
15984             {
15985               priv->grid_line_dashes[0] = 1;
15986               priv->grid_line_dashes[1] = 1;
15987             }
15988         }
15989     }
15990
15991   if (old_grid_lines != grid_lines)
15992     {
15993       gtk_widget_queue_draw (GTK_WIDGET (tree_view));
15994
15995       g_object_notify (G_OBJECT (tree_view), "enable-grid-lines");
15996     }
15997 }
15998
15999 /**
16000  * gtk_tree_view_get_enable_tree_lines:
16001  * @tree_view: a #GtkTreeView.
16002  *
16003  * Returns whether or not tree lines are drawn in @tree_view.
16004  *
16005  * Return value: %TRUE if tree lines are drawn in @tree_view, %FALSE
16006  * otherwise.
16007  *
16008  * Since: 2.10
16009  */
16010 gboolean
16011 gtk_tree_view_get_enable_tree_lines (GtkTreeView *tree_view)
16012 {
16013   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), FALSE);
16014
16015   return tree_view->priv->tree_lines_enabled;
16016 }
16017
16018 /**
16019  * gtk_tree_view_set_enable_tree_lines:
16020  * @tree_view: a #GtkTreeView
16021  * @enabled: %TRUE to enable tree line drawing, %FALSE otherwise.
16022  *
16023  * Sets whether to draw lines interconnecting the expanders in @tree_view.
16024  * This does not have any visible effects for lists.
16025  *
16026  * Since: 2.10
16027  */
16028 void
16029 gtk_tree_view_set_enable_tree_lines (GtkTreeView *tree_view,
16030                                      gboolean     enabled)
16031 {
16032   GtkTreeViewPrivate *priv;
16033   GtkWidget *widget;
16034   gboolean was_enabled;
16035
16036   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
16037
16038   enabled = enabled != FALSE;
16039
16040   priv = tree_view->priv;
16041   widget = GTK_WIDGET (tree_view);
16042
16043   was_enabled = priv->tree_lines_enabled;
16044
16045   priv->tree_lines_enabled = enabled;
16046
16047   if (gtk_widget_get_realized (widget))
16048     {
16049       if (!enabled && priv->tree_line_width)
16050         {
16051           priv->tree_line_width = 0;
16052         }
16053
16054       if (enabled && !priv->tree_line_width)
16055         {
16056           gint8 *dash_list;
16057           gtk_widget_style_get (widget,
16058                                 "tree-line-width", &priv->tree_line_width,
16059                                 "tree-line-pattern", (gchar *)&dash_list,
16060                                 NULL);
16061
16062           if (dash_list)
16063             {
16064               priv->tree_line_dashes[0] = dash_list[0];
16065               if (dash_list[0])
16066                 priv->tree_line_dashes[1] = dash_list[1];
16067
16068               g_free (dash_list);
16069             }
16070           else
16071             {
16072               priv->tree_line_dashes[0] = 1;
16073               priv->tree_line_dashes[1] = 1;
16074             }
16075         }
16076     }
16077
16078   if (was_enabled != enabled)
16079     {
16080       gtk_widget_queue_draw (GTK_WIDGET (tree_view));
16081
16082       g_object_notify (G_OBJECT (tree_view), "enable-tree-lines");
16083     }
16084 }
16085
16086
16087 /**
16088  * gtk_tree_view_set_show_expanders:
16089  * @tree_view: a #GtkTreeView
16090  * @enabled: %TRUE to enable expander drawing, %FALSE otherwise.
16091  *
16092  * Sets whether to draw and enable expanders and indent child rows in
16093  * @tree_view.  When disabled there will be no expanders visible in trees
16094  * and there will be no way to expand and collapse rows by default.  Also
16095  * note that hiding the expanders will disable the default indentation.  You
16096  * can set a custom indentation in this case using
16097  * gtk_tree_view_set_level_indentation().
16098  * This does not have any visible effects for lists.
16099  *
16100  * Since: 2.12
16101  */
16102 void
16103 gtk_tree_view_set_show_expanders (GtkTreeView *tree_view,
16104                                   gboolean     enabled)
16105 {
16106   gboolean was_enabled;
16107
16108   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
16109
16110   enabled = enabled != FALSE;
16111   was_enabled = tree_view->priv->show_expanders;
16112
16113   tree_view->priv->show_expanders = enabled == TRUE;
16114
16115   if (enabled != was_enabled)
16116     gtk_widget_queue_draw (GTK_WIDGET (tree_view));
16117 }
16118
16119 /**
16120  * gtk_tree_view_get_show_expanders:
16121  * @tree_view: a #GtkTreeView.
16122  *
16123  * Returns whether or not expanders are drawn in @tree_view.
16124  *
16125  * Return value: %TRUE if expanders are drawn in @tree_view, %FALSE
16126  * otherwise.
16127  *
16128  * Since: 2.12
16129  */
16130 gboolean
16131 gtk_tree_view_get_show_expanders (GtkTreeView *tree_view)
16132 {
16133   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), FALSE);
16134
16135   return tree_view->priv->show_expanders;
16136 }
16137
16138 /**
16139  * gtk_tree_view_set_level_indentation:
16140  * @tree_view: a #GtkTreeView
16141  * @indentation: the amount, in pixels, of extra indentation in @tree_view.
16142  *
16143  * Sets the amount of extra indentation for child levels to use in @tree_view
16144  * in addition to the default indentation.  The value should be specified in
16145  * pixels, a value of 0 disables this feature and in this case only the default
16146  * indentation will be used.
16147  * This does not have any visible effects for lists.
16148  *
16149  * Since: 2.12
16150  */
16151 void
16152 gtk_tree_view_set_level_indentation (GtkTreeView *tree_view,
16153                                      gint         indentation)
16154 {
16155   tree_view->priv->level_indentation = indentation;
16156
16157   gtk_widget_queue_draw (GTK_WIDGET (tree_view));
16158 }
16159
16160 /**
16161  * gtk_tree_view_get_level_indentation:
16162  * @tree_view: a #GtkTreeView.
16163  *
16164  * Returns the amount, in pixels, of extra indentation for child levels
16165  * in @tree_view.
16166  *
16167  * Return value: the amount of extra indentation for child levels in
16168  * @tree_view.  A return value of 0 means that this feature is disabled.
16169  *
16170  * Since: 2.12
16171  */
16172 gint
16173 gtk_tree_view_get_level_indentation (GtkTreeView *tree_view)
16174 {
16175   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), 0);
16176
16177   return tree_view->priv->level_indentation;
16178 }
16179
16180 /**
16181  * gtk_tree_view_set_tooltip_row:
16182  * @tree_view: a #GtkTreeView
16183  * @tooltip: a #GtkTooltip
16184  * @path: a #GtkTreePath
16185  *
16186  * Sets the tip area of @tooltip to be the area covered by the row at @path.
16187  * See also gtk_tree_view_set_tooltip_column() for a simpler alternative.
16188  * See also gtk_tooltip_set_tip_area().
16189  *
16190  * Since: 2.12
16191  */
16192 void
16193 gtk_tree_view_set_tooltip_row (GtkTreeView *tree_view,
16194                                GtkTooltip  *tooltip,
16195                                GtkTreePath *path)
16196 {
16197   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
16198   g_return_if_fail (GTK_IS_TOOLTIP (tooltip));
16199
16200   gtk_tree_view_set_tooltip_cell (tree_view, tooltip, path, NULL, NULL);
16201 }
16202
16203 /**
16204  * gtk_tree_view_set_tooltip_cell:
16205  * @tree_view: a #GtkTreeView
16206  * @tooltip: a #GtkTooltip
16207  * @path: (allow-none): a #GtkTreePath or %NULL
16208  * @column: (allow-none): a #GtkTreeViewColumn or %NULL
16209  * @cell: (allow-none): a #GtkCellRenderer or %NULL
16210  *
16211  * Sets the tip area of @tooltip to the area @path, @column and @cell have
16212  * in common.  For example if @path is %NULL and @column is set, the tip
16213  * area will be set to the full area covered by @column.  See also
16214  * gtk_tooltip_set_tip_area().
16215  *
16216  * Note that if @path is not specified and @cell is set and part of a column
16217  * containing the expander, the tooltip might not show and hide at the correct
16218  * position.  In such cases @path must be set to the current node under the
16219  * mouse cursor for this function to operate correctly.
16220  *
16221  * See also gtk_tree_view_set_tooltip_column() for a simpler alternative.
16222  *
16223  * Since: 2.12
16224  */
16225 void
16226 gtk_tree_view_set_tooltip_cell (GtkTreeView       *tree_view,
16227                                 GtkTooltip        *tooltip,
16228                                 GtkTreePath       *path,
16229                                 GtkTreeViewColumn *column,
16230                                 GtkCellRenderer   *cell)
16231 {
16232   GtkAllocation allocation;
16233   GdkRectangle rect;
16234
16235   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
16236   g_return_if_fail (GTK_IS_TOOLTIP (tooltip));
16237   g_return_if_fail (column == NULL || GTK_IS_TREE_VIEW_COLUMN (column));
16238   g_return_if_fail (cell == NULL || GTK_IS_CELL_RENDERER (cell));
16239
16240   /* Determine x values. */
16241   if (column && cell)
16242     {
16243       GdkRectangle tmp;
16244       gint start, width;
16245
16246       /* We always pass in path here, whether it is NULL or not.
16247        * For cells in expander columns path must be specified so that
16248        * we can correctly account for the indentation.  This also means
16249        * that the tooltip is constrained vertically by the "Determine y
16250        * values" code below; this is not a real problem since cells actually
16251        * don't stretch vertically in constrast to columns.
16252        */
16253       gtk_tree_view_get_cell_area (tree_view, path, column, &tmp);
16254       gtk_tree_view_column_cell_get_position (column, cell, &start, &width);
16255
16256       gtk_tree_view_convert_bin_window_to_widget_coords (tree_view,
16257                                                          tmp.x + start, 0,
16258                                                          &rect.x, NULL);
16259       rect.width = width;
16260     }
16261   else if (column)
16262     {
16263       GdkRectangle tmp;
16264
16265       gtk_tree_view_get_background_area (tree_view, NULL, column, &tmp);
16266       gtk_tree_view_convert_bin_window_to_widget_coords (tree_view,
16267                                                          tmp.x, 0,
16268                                                          &rect.x, NULL);
16269       rect.width = tmp.width;
16270     }
16271   else
16272     {
16273       gtk_widget_get_allocation (GTK_WIDGET (tree_view), &allocation);
16274       rect.x = 0;
16275       rect.width = allocation.width;
16276     }
16277
16278   /* Determine y values. */
16279   if (path)
16280     {
16281       GdkRectangle tmp;
16282
16283       gtk_tree_view_get_background_area (tree_view, path, NULL, &tmp);
16284       gtk_tree_view_convert_bin_window_to_widget_coords (tree_view,
16285                                                          0, tmp.y,
16286                                                          NULL, &rect.y);
16287       rect.height = tmp.height;
16288     }
16289   else
16290     {
16291       rect.y = 0;
16292       rect.height = gtk_adjustment_get_page_size (tree_view->priv->vadjustment);
16293     }
16294
16295   gtk_tooltip_set_tip_area (tooltip, &rect);
16296 }
16297
16298 /**
16299  * gtk_tree_view_get_tooltip_context:
16300  * @tree_view: a #GtkTreeView
16301  * @x: (inout): the x coordinate (relative to widget coordinates)
16302  * @y: (inout): the y coordinate (relative to widget coordinates)
16303  * @keyboard_tip: whether this is a keyboard tooltip or not
16304  * @model: (out) (allow-none) (transfer none): a pointer to receive a
16305  *         #GtkTreeModel or %NULL
16306  * @path: (out) (allow-none): a pointer to receive a #GtkTreePath or %NULL
16307  * @iter: (out) (allow-none): a pointer to receive a #GtkTreeIter or %NULL
16308  *
16309  * This function is supposed to be used in a #GtkWidget::query-tooltip
16310  * signal handler for #GtkTreeView.  The @x, @y and @keyboard_tip values
16311  * which are received in the signal handler, should be passed to this
16312  * function without modification.
16313  *
16314  * The return value indicates whether there is a tree view row at the given
16315  * coordinates (%TRUE) or not (%FALSE) for mouse tooltips.  For keyboard
16316  * tooltips the row returned will be the cursor row.  When %TRUE, then any of
16317  * @model, @path and @iter which have been provided will be set to point to
16318  * that row and the corresponding model.  @x and @y will always be converted
16319  * to be relative to @tree_view's bin_window if @keyboard_tooltip is %FALSE.
16320  *
16321  * Return value: whether or not the given tooltip context points to a row.
16322  *
16323  * Since: 2.12
16324  */
16325 gboolean
16326 gtk_tree_view_get_tooltip_context (GtkTreeView   *tree_view,
16327                                    gint          *x,
16328                                    gint          *y,
16329                                    gboolean       keyboard_tip,
16330                                    GtkTreeModel **model,
16331                                    GtkTreePath  **path,
16332                                    GtkTreeIter   *iter)
16333 {
16334   GtkTreePath *tmppath = NULL;
16335
16336   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), FALSE);
16337   g_return_val_if_fail (x != NULL, FALSE);
16338   g_return_val_if_fail (y != NULL, FALSE);
16339
16340   if (keyboard_tip)
16341     {
16342       gtk_tree_view_get_cursor (tree_view, &tmppath, NULL);
16343
16344       if (!tmppath)
16345         return FALSE;
16346     }
16347   else
16348     {
16349       gtk_tree_view_convert_widget_to_bin_window_coords (tree_view, *x, *y,
16350                                                          x, y);
16351
16352       if (!gtk_tree_view_get_path_at_pos (tree_view, *x, *y,
16353                                           &tmppath, NULL, NULL, NULL))
16354         return FALSE;
16355     }
16356
16357   if (model)
16358     *model = gtk_tree_view_get_model (tree_view);
16359
16360   if (iter)
16361     gtk_tree_model_get_iter (gtk_tree_view_get_model (tree_view),
16362                              iter, tmppath);
16363
16364   if (path)
16365     *path = tmppath;
16366   else
16367     gtk_tree_path_free (tmppath);
16368
16369   return TRUE;
16370 }
16371
16372 static gboolean
16373 gtk_tree_view_set_tooltip_query_cb (GtkWidget  *widget,
16374                                     gint        x,
16375                                     gint        y,
16376                                     gboolean    keyboard_tip,
16377                                     GtkTooltip *tooltip,
16378                                     gpointer    data)
16379 {
16380   GValue value = G_VALUE_INIT;
16381   GValue transformed = G_VALUE_INIT;
16382   GtkTreeIter iter;
16383   GtkTreePath *path;
16384   GtkTreeModel *model;
16385   GtkTreeView *tree_view = GTK_TREE_VIEW (widget);
16386
16387   if (!gtk_tree_view_get_tooltip_context (GTK_TREE_VIEW (widget),
16388                                           &x, &y,
16389                                           keyboard_tip,
16390                                           &model, &path, &iter))
16391     return FALSE;
16392
16393   gtk_tree_model_get_value (model, &iter,
16394                             tree_view->priv->tooltip_column, &value);
16395
16396   g_value_init (&transformed, G_TYPE_STRING);
16397
16398   if (!g_value_transform (&value, &transformed))
16399     {
16400       g_value_unset (&value);
16401       gtk_tree_path_free (path);
16402
16403       return FALSE;
16404     }
16405
16406   g_value_unset (&value);
16407
16408   if (!g_value_get_string (&transformed))
16409     {
16410       g_value_unset (&transformed);
16411       gtk_tree_path_free (path);
16412
16413       return FALSE;
16414     }
16415
16416   gtk_tooltip_set_markup (tooltip, g_value_get_string (&transformed));
16417   gtk_tree_view_set_tooltip_row (tree_view, tooltip, path);
16418
16419   gtk_tree_path_free (path);
16420   g_value_unset (&transformed);
16421
16422   return TRUE;
16423 }
16424
16425 /**
16426  * gtk_tree_view_set_tooltip_column:
16427  * @tree_view: a #GtkTreeView
16428  * @column: an integer, which is a valid column number for @tree_view's model
16429  *
16430  * If you only plan to have simple (text-only) tooltips on full rows, you
16431  * can use this function to have #GtkTreeView handle these automatically
16432  * for you. @column should be set to the column in @tree_view's model
16433  * containing the tooltip texts, or -1 to disable this feature.
16434  *
16435  * When enabled, #GtkWidget:has-tooltip will be set to %TRUE and
16436  * @tree_view will connect a #GtkWidget::query-tooltip signal handler.
16437  *
16438  * Note that the signal handler sets the text with gtk_tooltip_set_markup(),
16439  * so &amp;, &lt;, etc have to be escaped in the text.
16440  *
16441  * Since: 2.12
16442  */
16443 void
16444 gtk_tree_view_set_tooltip_column (GtkTreeView *tree_view,
16445                                   gint         column)
16446 {
16447   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
16448
16449   if (column == tree_view->priv->tooltip_column)
16450     return;
16451
16452   if (column == -1)
16453     {
16454       g_signal_handlers_disconnect_by_func (tree_view,
16455                                             gtk_tree_view_set_tooltip_query_cb,
16456                                             NULL);
16457       gtk_widget_set_has_tooltip (GTK_WIDGET (tree_view), FALSE);
16458     }
16459   else
16460     {
16461       if (tree_view->priv->tooltip_column == -1)
16462         {
16463           g_signal_connect (tree_view, "query-tooltip",
16464                             G_CALLBACK (gtk_tree_view_set_tooltip_query_cb), NULL);
16465           gtk_widget_set_has_tooltip (GTK_WIDGET (tree_view), TRUE);
16466         }
16467     }
16468
16469   tree_view->priv->tooltip_column = column;
16470   g_object_notify (G_OBJECT (tree_view), "tooltip-column");
16471 }
16472
16473 /**
16474  * gtk_tree_view_get_tooltip_column:
16475  * @tree_view: a #GtkTreeView
16476  *
16477  * Returns the column of @tree_view's model which is being used for
16478  * displaying tooltips on @tree_view's rows.
16479  *
16480  * Return value: the index of the tooltip column that is currently being
16481  * used, or -1 if this is disabled.
16482  *
16483  * Since: 2.12
16484  */
16485 gint
16486 gtk_tree_view_get_tooltip_column (GtkTreeView *tree_view)
16487 {
16488   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), 0);
16489
16490   return tree_view->priv->tooltip_column;
16491 }