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

   1 /* gtktreeview.c
   2  * Copyright (C) 2000  Red Hat, Inc.,  Jonathan Blandford <jrb@redhat.com>
   3  *
   4  * This library is free software; you can redistribute it and/or
   5  * modify it under the terms of the GNU Library General Public
   6  * License as published by the Free Software Foundation; either
   7  * version 2 of the License, or (at your option) any later version.
   8  *
   9  * This library is distributed in the hope that it will be useful,
  10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  12  * Library General Public License for more details.
  13  *
  14  * You should have received a copy of the GNU Library General Public
  15  * License along with this library; if not, write to the
  16  * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
  17  * Boston, MA 02111-1307, USA.
  18  */
  19
  20
  21 #include "config.h"
  22
  23 #include <math.h>
  24 #include <string.h>
  25
  26 #include "gtktreeview.h"
  27 #include "gtkrbtree.h"
  28 #include "gtktreednd.h"
  29 #include "gtktreeprivate.h"
  30 #include "gtkcellrenderer.h"
  31 #include "gtkmarshalers.h"
  32 #include "gtkbuildable.h"
  33 #include "gtkbutton.h"
  34 #include "gtklabel.h"
  35 #include "gtkbox.h"
  36 #include "gtkarrow.h"
  37 #include "gtkintl.h"
  38 #include "gtkbindings.h"
  39 #include "gtkcontainer.h"
  40 #include "gtkentry.h"
  41 #include "gtkframe.h"
  42 #include "gtkmain.h"
  43 #include "gtktreemodelsort.h"
  44 #include "gtktooltip.h"
  45 #include "gtkscrollable.h"
  46 #include "gtkcelllayout.h"
  47 #include "gtkprivate.h"
  48 #include "gtkwidgetprivate.h"
  49 #include "gtkentryprivate.h"
  50 #include "gtkstylecontextprivate.h"
  51 #include "gtktypebuiltins.h"
  52 #include "gtkmain.h"
  53 #include "a11y/gtktreeviewaccessible.h"
  54
  55
  56 /**
  57  * SECTION:gtktreeview
  58  * @Short_description: A widget for displaying both trees and lists
  59  * @Title: GtkTreeView
  60  * @See_also: #GtkTreeViewColumn, #GtkTreeSelection, #GtkTreeDnd, #GtkTreeMode,
  61  *   #GtkTreeSortable, #GtkTreeModelSort, #GtkListStore, #GtkTreeStore,
  62  *   #GtkCellRenderer, #GtkCellEditable, #GtkCellRendererPixbuf,
  63  *   #GtkCellRendererText, #GtkCellRendererToggle
  64  *
  65  * Widget that displays any object that implements the #GtkTreeModel interface.
  66  *
  67  * Please refer to the <link linkend="TreeWidget">tree widget conceptual
  68  * overview</link> for an overview of all the objects and data types related
  69  * to the tree widget and how they work together.
  70  *
  71  * Several different coordinate systems are exposed in the GtkTreeView API.
  72  * These are:
  73  *
  74  * <inlinegraphic fileref="tree-view-coordinates.png" format="PNG"></inlinegraphic>
  75  * <variablelist><title>Coordinate systems in GtkTreeView API</title>
  76  * <varlistentry><term>Widget coordinates</term>
  77  * <listitem>
  78  * <para>
  79  * Coordinates relative to the widget (usually <literal>widget->window</literal>).
  80  * </para>
  81  * </listitem>
  82  * </varlistentry>
  83  * <varlistentry><term>Bin window coordinates</term>
  84  * <listitem>
  85  * <para>
  86  * Coordinates relative to the window that GtkTreeView renders to.
  87  * </para>
  88  * </listitem>
  89  * </varlistentry>
  90  * <varlistentry><term>Tree coordinates</term>
  91  * <listitem>
  92  * <para>
  93  * Coordinates relative to the entire scrollable area of GtkTreeView. These
  94  * coordinates start at (0, 0) for row 0 of the tree.
  95  * </para>
  96  * </listitem>
  97  * </varlistentry>
  98  * </variablelist>
  99  *
 100  * Several functions are available for converting between the different
 101  * coordinate systems.  The most common translations are between widget and bin
 102  * window coordinates and between bin window and tree coordinates. For the
 103  * former you can use gtk_tree_view_convert_widget_to_bin_window_coords()
 104  * (and vice versa), for the latter gtk_tree_view_convert_bin_window_to_tree_coords()
 105  * (and vice versa).
 106  *
 107  * <refsect2 id="GtkTreeView-BUILDER-UI">
 108  * <title>GtkTreeView as GtkBuildable</title>
 109  * The GtkTreeView implementation of the GtkBuildable interface accepts
 110  * #GtkTreeViewColumn objects as &lt;child&gt; elements and exposes the
 111  * internal #GtkTreeSelection in UI definitions.
 112  * <example>
 113  * <title>A UI definition fragment with GtkTreeView</title>
 114  * <programlisting><![CDATA[
 115  * <object class="GtkTreeView" id="treeview">
 116  *   <property name="model">liststore1</property>
 117  *   <child>
 118  *     <object class="GtkTreeViewColumn" id="test-column">
 119  *       <property name="title">Test</property>
 120  *       <child>
 121  *         <object class="GtkCellRendererText" id="test-renderer"/>
 122  *         <attributes>
 123  *           <attribute name="text">1</attribute>
 124  *         </attributes>
 125  *       </child>
 126  *     </object>
 127  *   </child>
 128  *   <child internal-child="selection">
 129  *     <object class="GtkTreeSelection" id="selection">
 130  *       <signal name="changed" handler="on_treeview_selection_changed"/>
 131  *     </object>
 132  *   </child>
 133  * </object>
 134  * ]]></programlisting>
 135  * </example>
 136  * </refsect2>
 137  */
 138
 139 enum
 140 {
 141   DRAG_COLUMN_WINDOW_STATE_UNSET = 0,
 142   DRAG_COLUMN_WINDOW_STATE_ORIGINAL = 1,
 143   DRAG_COLUMN_WINDOW_STATE_ARROW = 2,
 144   DRAG_COLUMN_WINDOW_STATE_ARROW_LEFT = 3,
 145   DRAG_COLUMN_WINDOW_STATE_ARROW_RIGHT = 4
 146 };
 147
 148 enum
 149 {
 150   RUBBER_BAND_OFF = 0,
 151   RUBBER_BAND_MAYBE_START = 1,
 152   RUBBER_BAND_ACTIVE = 2
 153 };
 154
 155 typedef enum {
 156   CLEAR_AND_SELECT = (1 << 0),
 157   CLAMP_NODE       = (1 << 1),
 158   CURSOR_INVALID   = (1 << 2)
 159 } SetCursorFlags;
 160
 161  /* This lovely little value is used to determine how far away from the title bar
 162   * you can move the mouse and still have a column drag work.
 163   */
 164 #define TREE_VIEW_COLUMN_DRAG_DEAD_MULTIPLIER(tree_view) (10*gtk_tree_view_get_effective_header_height(tree_view))
 165
 166 #ifdef __GNUC__
 167
 168 #define TREE_VIEW_INTERNAL_ASSERT(expr, ret)     G_STMT_START{          \
 169      if (!(expr))                                                       \
 170        {                                                                \
 171          g_log (G_LOG_DOMAIN,                                           \
 172                 G_LOG_LEVEL_CRITICAL,                                   \
 173                 "%s (%s): assertion `%s' failed.\n"                     \
 174                 "There is a disparity between the internal view of the GtkTreeView,\n"    \
 175                 "and the GtkTreeModel.  This generally means that the model has changed\n"\
 176                 "without letting the view know.  Any display from now on is likely to\n"  \
 177                 "be incorrect.\n",                                                        \
 178                 G_STRLOC,                                               \
 179                 G_STRFUNC,                                              \
 180                 #expr);                                                 \
 181          return ret;                                                    \
 182        };                               }G_STMT_END
 183
 184 #define TREE_VIEW_INTERNAL_ASSERT_VOID(expr)     G_STMT_START{          \
 185      if (!(expr))                                                       \
 186        {                                                                \
 187          g_log (G_LOG_DOMAIN,                                           \
 188                 G_LOG_LEVEL_CRITICAL,                                   \
 189                 "%s (%s): assertion `%s' failed.\n"                     \
 190                 "There is a disparity between the internal view of the GtkTreeView,\n"    \
 191                 "and the GtkTreeModel.  This generally means that the model has changed\n"\
 192                 "without letting the view know.  Any display from now on is likely to\n"  \
 193                 "be incorrect.\n",                                                        \
 194                 G_STRLOC,                                               \
 195                 G_STRFUNC,                                              \
 196                 #expr);                                                 \
 197          return;                                                        \
 198        };                               }G_STMT_END
 199
 200 #else
 201
 202 #define TREE_VIEW_INTERNAL_ASSERT(expr, ret)     G_STMT_START{          \
 203      if (!(expr))                                                       \
 204        {                                                                \
 205          g_log (G_LOG_DOMAIN,                                           \
 206                 G_LOG_LEVEL_CRITICAL,                                   \
 207                 "file %s: line %d: assertion `%s' failed.\n"       \
 208                 "There is a disparity between the internal view of the GtkTreeView,\n"    \
 209                 "and the GtkTreeModel.  This generally means that the model has changed\n"\
 210                 "without letting the view know.  Any display from now on is likely to\n"  \
 211                 "be incorrect.\n",                                                        \
 212                 __FILE__,                                               \
 213                 __LINE__,                                               \
 214                 #expr);                                                 \
 215          return ret;                                                    \
 216        };                               }G_STMT_END
 217
 218 #define TREE_VIEW_INTERNAL_ASSERT_VOID(expr)     G_STMT_START{          \
 219      if (!(expr))                                                       \
 220        {                                                                \
 221          g_log (G_LOG_DOMAIN,                                           \
 222                 G_LOG_LEVEL_CRITICAL,                                   \
 223                 "file %s: line %d: assertion '%s' failed.\n"            \
 224                 "There is a disparity between the internal view of the GtkTreeView,\n"    \
 225                 "and the GtkTreeModel.  This generally means that the model has changed\n"\
 226                 "without letting the view know.  Any display from now on is likely to\n"  \
 227                 "be incorrect.\n",                                                        \
 228                 __FILE__,                                               \
 229                 __LINE__,                                               \
 230                 #expr);                                                 \
 231          return;                                                        \
 232        };                               }G_STMT_END
 233 #endif
 234
 235 #define GTK_TREE_VIEW_PRIORITY_VALIDATE (GDK_PRIORITY_REDRAW + 5)
 236 #define GTK_TREE_VIEW_PRIORITY_SCROLL_SYNC (GTK_TREE_VIEW_PRIORITY_VALIDATE + 2)
 237 #define GTK_TREE_VIEW_TIME_MS_PER_IDLE 30
 238 #define SCROLL_EDGE_SIZE 15
 239 #define EXPANDER_EXTRA_PADDING 4
 240 #define GTK_TREE_VIEW_SEARCH_DIALOG_TIMEOUT 5000
 241 #define AUTO_EXPAND_TIMEOUT 500
 242
 243 /* Translate from bin_window coordinates to rbtree (tree coordinates) and
 244  * vice versa.
 245  */
 246 #define TREE_WINDOW_Y_TO_RBTREE_Y(tree_view,y) ((y) + tree_view->priv->dy)
 247 #define RBTREE_Y_TO_TREE_WINDOW_Y(tree_view,y) ((y) - tree_view->priv->dy)
 248
 249 typedef struct _GtkTreeViewColumnReorder GtkTreeViewColumnReorder;
 250 struct _GtkTreeViewColumnReorder
 251 {
 252   gint left_align;
 253   gint right_align;
 254   GtkTreeViewColumn *left_column;
 255   GtkTreeViewColumn *right_column;
 256 };
 257
 258 typedef struct _GtkTreeViewChild GtkTreeViewChild;
 259 struct _GtkTreeViewChild
 260 {
 261   GtkWidget *widget;
 262   gint x;
 263   gint y;
 264   gint width;
 265   gint height;
 266 };
 267
 268
 269 typedef struct _TreeViewDragInfo TreeViewDragInfo;
 270 struct _TreeViewDragInfo
 271 {
 272   GdkModifierType start_button_mask;
 273   GtkTargetList *_unused_source_target_list;
 274   GdkDragAction source_actions;
 275
 276   GtkTargetList *_unused_dest_target_list;
 277
 278   guint source_set : 1;
 279   guint dest_set : 1;
 280 };
 281
 282
 283 struct _GtkTreeViewPrivate
 284 {
 285   GtkTreeModel *model;
 286
 287   /* tree information */
 288   GtkRBTree *tree;
 289
 290   /* Container info */
 291   GList *children;
 292   gint width;
 293   gint height;
 294
 295   /* Adjustments */
 296   GtkAdjustment *hadjustment;
 297   GtkAdjustment *vadjustment;
 298   gint           min_display_width;
 299   gint           min_display_height;
 300
 301   /* Sub windows */
 302   GdkWindow *bin_window;
 303   GdkWindow *header_window;
 304
 305   /* Scroll position state keeping */
 306   GtkTreeRowReference *top_row;
 307   gint top_row_dy;
 308   /* dy == y pos of top_row + top_row_dy */
 309   /* we cache it for simplicity of the code */
 310   gint dy;
 311
 312   guint presize_handler_timer;
 313   guint validate_rows_timer;
 314   guint scroll_sync_timer;
 315
 316   /* Indentation and expander layout */
 317   gint expander_size;
 318   GtkTreeViewColumn *expander_column;
 319
 320   gint level_indentation;
 321
 322   /* Key navigation (focus), selection */
 323   gint cursor_offset;
 324
 325   GtkTreeRowReference *anchor;
 326   GtkRBNode *cursor_node;
 327   GtkRBTree *cursor_tree;
 328
 329   GtkTreeViewColumn *focus_column;
 330
 331   /* Current pressed node, previously pressed, prelight */
 332   GtkRBNode *button_pressed_node;
 333   GtkRBTree *button_pressed_tree;
 334
 335   gint pressed_button;
 336   gint press_start_x;
 337   gint press_start_y;
 338
 339   gint event_last_x;
 340   gint event_last_y;
 341
 342   guint last_button_time;
 343   gint last_button_x;
 344   gint last_button_y;
 345
 346   GtkRBNode *prelight_node;
 347   GtkRBTree *prelight_tree;
 348
 349   /* Cell Editing */
 350   GtkTreeViewColumn *edited_column;
 351
 352   /* The node that's currently being collapsed or expanded */
 353   GtkRBNode *expanded_collapsed_node;
 354   GtkRBTree *expanded_collapsed_tree;
 355   guint expand_collapse_timeout;
 356
 357   /* Auto expand/collapse timeout in hover mode */
 358   guint auto_expand_timeout;
 359
 360   /* Selection information */
 361   GtkTreeSelection *selection;
 362
 363   /* Header information */
 364   gint n_columns;
 365   GList *columns;
 366   gint header_height;
 367
 368   GtkTreeViewColumnDropFunc column_drop_func;
 369   gpointer column_drop_func_data;
 370   GDestroyNotify column_drop_func_data_destroy;
 371   GList *column_drag_info;
 372   GtkTreeViewColumnReorder *cur_reorder;
 373
 374   gint prev_width_before_expander;
 375
 376   /* Interactive Header reordering */
 377   GdkWindow *drag_window;
 378   GdkWindow *drag_highlight_window;
 379   GtkTreeViewColumn *drag_column;
 380   gint drag_column_x;
 381
 382   /* Interactive Header Resizing */
 383   gint drag_pos;
 384   gint x_drag;
 385
 386   /* Non-interactive Header Resizing, expand flag support */
 387   gint prev_width;
 388
 389   gint last_extra_space;
 390   gint last_extra_space_per_column;
 391   gint last_number_of_expand_columns;
 392
 393   /* ATK Hack */
 394   GtkTreeDestroyCountFunc destroy_count_func;
 395   gpointer destroy_count_data;
 396   GDestroyNotify destroy_count_destroy;
 397
 398   /* Scroll timeout (e.g. during dnd, rubber banding) */
 399   guint scroll_timeout;
 400
 401   /* Row drag-and-drop */
 402   GtkTreeRowReference *drag_dest_row;
 403   GtkTreeViewDropPosition drag_dest_pos;
 404   guint open_dest_timeout;
 405
 406   /* Rubber banding */
 407   gint rubber_band_status;
 408   gint rubber_band_x;
 409   gint rubber_band_y;
 410   gint rubber_band_extend;
 411   gint rubber_band_modify;
 412
 413   GtkRBNode *rubber_band_start_node;
 414   GtkRBTree *rubber_band_start_tree;
 415
 416   GtkRBNode *rubber_band_end_node;
 417   GtkRBTree *rubber_band_end_tree;
 418
 419   /* fixed height */
 420   gint fixed_height;
 421
 422   /* Scroll-to functionality when unrealized */
 423   GtkTreeRowReference *scroll_to_path;
 424   GtkTreeViewColumn *scroll_to_column;
 425   gfloat scroll_to_row_align;
 426   gfloat scroll_to_col_align;
 427
 428   /* Interactive search */
 429   gint selected_iter;
 430   gint search_column;
 431   GtkTreeViewSearchPositionFunc search_position_func;
 432   GtkTreeViewSearchEqualFunc search_equal_func;
 433   gpointer search_user_data;
 434   GDestroyNotify search_destroy;
 435   gpointer search_position_user_data;
 436   GDestroyNotify search_position_destroy;
 437   GtkWidget *search_window;
 438   GtkWidget *search_entry;
 439   gulong search_entry_changed_id;
 440   guint typeselect_flush_timeout;
 441
 442   /* Grid and tree lines */
 443   GtkTreeViewGridLines grid_lines;
 444   double grid_line_dashes[2];
 445   int grid_line_width;
 446
 447   gboolean tree_lines_enabled;
 448   double tree_line_dashes[2];
 449   int tree_line_width;
 450
 451   /* Row separators */
 452   GtkTreeViewRowSeparatorFunc row_separator_func;
 453   gpointer row_separator_data;
 454   GDestroyNotify row_separator_destroy;
 455
 456   /* Tooltip support */
 457   gint tooltip_column;
 458
 459   /* Here comes the bitfield */
 460   guint scroll_to_use_align : 1;
 461
 462   guint fixed_height_mode : 1;
 463   guint fixed_height_check : 1;
 464
 465   guint reorderable : 1;
 466   guint header_has_focus : 1;
 467   guint drag_column_window_state : 3;
 468   /* hint to display rows in alternating colors */
 469   guint has_rules : 1;
 470   guint mark_rows_col_dirty : 1;
 471
 472   /* for DnD */
 473   guint empty_view_drop : 1;
 474
 475   guint modify_selection_pressed : 1;
 476   guint extend_selection_pressed : 1;
 477
 478   guint init_hadjust_value : 1;
 479
 480   guint in_top_row_to_dy : 1;
 481
 482   /* interactive search */
 483   guint enable_search : 1;
 484   guint disable_popdown : 1;
 485   guint search_custom_entry_set : 1;
 486
 487   guint hover_selection : 1;
 488   guint hover_expand : 1;
 489   guint imcontext_changed : 1;
 490
 491   guint rubber_banding_enable : 1;
 492
 493   guint in_grab : 1;
 494
 495   guint post_validation_flag : 1;
 496
 497   /* Whether our key press handler is to avoid sending an unhandled binding to the search entry */
 498   guint search_entry_avoid_unhandled_binding : 1;
 499
 500   /* GtkScrollablePolicy needs to be checked when
 501    * driving the scrollable adjustment values */
 502   guint hscroll_policy : 1;
 503   guint vscroll_policy : 1;
 504
 505   /* GtkTreeView flags */
 506   guint is_list : 1;
 507   guint show_expanders : 1;
 508   guint in_column_resize : 1;
 509   guint arrow_prelit : 1;
 510   guint headers_visible : 1;
 511   guint draw_keyfocus : 1;
 512   guint model_setup : 1;
 513   guint in_column_drag : 1;
 514 };
 515
 516
 517 /* Signals */
 518 enum
 519 {
 520   ROW_ACTIVATED,
 521   TEST_EXPAND_ROW,
 522   TEST_COLLAPSE_ROW,
 523   ROW_EXPANDED,
 524   ROW_COLLAPSED,
 525   COLUMNS_CHANGED,
 526   CURSOR_CHANGED,
 527   MOVE_CURSOR,
 528   SELECT_ALL,
 529   UNSELECT_ALL,
 530   SELECT_CURSOR_ROW,
 531   TOGGLE_CURSOR_ROW,
 532   EXPAND_COLLAPSE_CURSOR_ROW,
 533   SELECT_CURSOR_PARENT,
 534   START_INTERACTIVE_SEARCH,
 535   LAST_SIGNAL
 536 };
 537
 538 /* Properties */
 539 enum {
 540   PROP_0,
 541   PROP_MODEL,
 542   PROP_HADJUSTMENT,
 543   PROP_VADJUSTMENT,
 544   PROP_HSCROLL_POLICY,
 545   PROP_VSCROLL_POLICY,
 546   PROP_HEADERS_VISIBLE,
 547   PROP_HEADERS_CLICKABLE,
 548   PROP_EXPANDER_COLUMN,
 549   PROP_REORDERABLE,
 550   PROP_RULES_HINT,
 551   PROP_ENABLE_SEARCH,
 552   PROP_SEARCH_COLUMN,
 553   PROP_FIXED_HEIGHT_MODE,
 554   PROP_HOVER_SELECTION,
 555   PROP_HOVER_EXPAND,
 556   PROP_SHOW_EXPANDERS,
 557   PROP_LEVEL_INDENTATION,
 558   PROP_RUBBER_BANDING,
 559   PROP_ENABLE_GRID_LINES,
 560   PROP_ENABLE_TREE_LINES,
 561   PROP_TOOLTIP_COLUMN
 562 };
 563
 564 /* object signals */
 565 static void     gtk_tree_view_finalize             (GObject          *object);
 566 static void     gtk_tree_view_set_property         (GObject         *object,
 567                                                     guint            prop_id,
 568                                                     const GValue    *value,
 569                                                     GParamSpec      *pspec);
 570 static void     gtk_tree_view_get_property         (GObject         *object,
 571                                                     guint            prop_id,
 572                                                     GValue          *value,
 573                                                     GParamSpec      *pspec);
 574
 575 /* gtkwidget signals */
 576 static void     gtk_tree_view_destroy              (GtkWidget        *widget);
 577 static void     gtk_tree_view_realize              (GtkWidget        *widget);
 578 static void     gtk_tree_view_unrealize            (GtkWidget        *widget);
 579 static void     gtk_tree_view_map                  (GtkWidget        *widget);
 580 static void     gtk_tree_view_get_preferred_width  (GtkWidget        *widget,
 581                                                     gint             *minimum,
 582                                                     gint             *natural);
 583 static void     gtk_tree_view_get_preferred_height (GtkWidget        *widget,
 584                                                     gint             *minimum,
 585                                                     gint             *natural);
 586 static void     gtk_tree_view_size_request         (GtkWidget        *widget,
 587                                                     GtkRequisition   *requisition,
 588                                                     gboolean          may_validate);
 589 static void     gtk_tree_view_size_allocate        (GtkWidget        *widget,
 590                                                     GtkAllocation    *allocation);
 591 static gboolean gtk_tree_view_draw                 (GtkWidget        *widget,
 592                                                     cairo_t          *cr);
 593 static gboolean gtk_tree_view_key_press            (GtkWidget        *widget,
 594                                                     GdkEventKey      *event);
 595 static gboolean gtk_tree_view_key_release          (GtkWidget        *widget,
 596                                                     GdkEventKey      *event);
 597 static gboolean gtk_tree_view_motion               (GtkWidget        *widget,
 598                                                     GdkEventMotion   *event);
 599 static gboolean gtk_tree_view_enter_notify         (GtkWidget        *widget,
 600                                                     GdkEventCrossing *event);
 601 static gboolean gtk_tree_view_leave_notify         (GtkWidget        *widget,
 602                                                     GdkEventCrossing *event);
 603 static gboolean gtk_tree_view_button_press         (GtkWidget        *widget,
 604                                                     GdkEventButton   *event);
 605 static gboolean gtk_tree_view_button_release       (GtkWidget        *widget,
 606                                                     GdkEventButton   *event);
 607 static gboolean gtk_tree_view_grab_broken          (GtkWidget          *widget,
 608                                                     GdkEventGrabBroken *event);
 609 #if 0
 610 static gboolean gtk_tree_view_configure            (GtkWidget         *widget,
 611                                                     GdkEventConfigure *event);
 612 #endif
 613
 614 static GtkWidgetPath * gtk_tree_view_get_path_for_child (GtkContainer *container,
 615                                                          GtkWidget    *child);
 616
 617 static void     gtk_tree_view_set_focus_child      (GtkContainer     *container,
 618                                                     GtkWidget        *child);
 619 static gint     gtk_tree_view_focus_out            (GtkWidget        *widget,
 620                                                     GdkEventFocus    *event);
 621 static gint     gtk_tree_view_focus                (GtkWidget        *widget,
 622                                                     GtkDirectionType  direction);
 623 static void     gtk_tree_view_grab_focus           (GtkWidget        *widget);
 624 static void     gtk_tree_view_style_updated        (GtkWidget        *widget);
 625 static void     gtk_tree_view_grab_notify          (GtkWidget        *widget,
 626                                                     gboolean          was_grabbed);
 627 static void     gtk_tree_view_state_flags_changed  (GtkWidget        *widget,
 628                                                     GtkStateFlags     previous_state);
 629
 630 /* container signals */
 631 static void     gtk_tree_view_remove               (GtkContainer     *container,
 632                                                     GtkWidget        *widget);
 633 static void     gtk_tree_view_forall               (GtkContainer     *container,
 634                                                     gboolean          include_internals,
 635                                                     GtkCallback       callback,
 636                                                     gpointer          callback_data);
 637
 638 /* Source side drag signals */
 639 static void gtk_tree_view_drag_begin       (GtkWidget        *widget,
 640                                             GdkDragContext   *context);
 641 static void gtk_tree_view_drag_end         (GtkWidget        *widget,
 642                                             GdkDragContext   *context);
 643 static void gtk_tree_view_drag_data_get    (GtkWidget        *widget,
 644                                             GdkDragContext   *context,
 645                                             GtkSelectionData *selection_data,
 646                                             guint             info,
 647                                             guint             time);
 648 static void gtk_tree_view_drag_data_delete (GtkWidget        *widget,
 649                                             GdkDragContext   *context);
 650
 651 /* Target side drag signals */
 652 static void     gtk_tree_view_drag_leave         (GtkWidget        *widget,
 653                                                   GdkDragContext   *context,
 654                                                   guint             time);
 655 static gboolean gtk_tree_view_drag_motion        (GtkWidget        *widget,
 656                                                   GdkDragContext   *context,
 657                                                   gint              x,
 658                                                   gint              y,
 659                                                   guint             time);
 660 static gboolean gtk_tree_view_drag_drop          (GtkWidget        *widget,
 661                                                   GdkDragContext   *context,
 662                                                   gint              x,
 663                                                   gint              y,
 664                                                   guint             time);
 665 static void     gtk_tree_view_drag_data_received (GtkWidget        *widget,
 666                                                   GdkDragContext   *context,
 667                                                   gint              x,
 668                                                   gint              y,
 669                                                   GtkSelectionData *selection_data,
 670                                                   guint             info,
 671                                                   guint             time);
 672
 673 /* tree_model signals */
 674 static gboolean gtk_tree_view_real_move_cursor            (GtkTreeView     *tree_view,
 675                                                            GtkMovementStep  step,
 676                                                            gint             count);
 677 static gboolean gtk_tree_view_real_select_all             (GtkTreeView     *tree_view);
 678 static gboolean gtk_tree_view_real_unselect_all           (GtkTreeView     *tree_view);
 679 static gboolean gtk_tree_view_real_select_cursor_row      (GtkTreeView     *tree_view,
 680                                                            gboolean         start_editing);
 681 static gboolean gtk_tree_view_real_toggle_cursor_row      (GtkTreeView     *tree_view);
 682 static gboolean gtk_tree_view_real_expand_collapse_cursor_row (GtkTreeView     *tree_view,
 683                                                                gboolean         logical,
 684                                                                gboolean         expand,
 685                                                                gboolean         open_all);
 686 static gboolean gtk_tree_view_real_select_cursor_parent   (GtkTreeView     *tree_view);
 687 static void gtk_tree_view_row_changed                     (GtkTreeModel    *model,
 688                                                            GtkTreePath     *path,
 689                                                            GtkTreeIter     *iter,
 690                                                            gpointer         data);
 691 static void gtk_tree_view_row_inserted                    (GtkTreeModel    *model,
 692                                                            GtkTreePath     *path,
 693                                                            GtkTreeIter     *iter,
 694                                                            gpointer         data);
 695 static void gtk_tree_view_row_has_child_toggled           (GtkTreeModel    *model,
 696                                                            GtkTreePath     *path,
 697                                                            GtkTreeIter     *iter,
 698                                                            gpointer         data);
 699 static void gtk_tree_view_row_deleted                     (GtkTreeModel    *model,
 700                                                            GtkTreePath     *path,
 701                                                            gpointer         data);
 702 static void gtk_tree_view_rows_reordered                  (GtkTreeModel    *model,
 703                                                            GtkTreePath     *parent,
 704                                                            GtkTreeIter     *iter,
 705                                                            gint            *new_order,
 706                                                            gpointer         data);
 707
 708 /* Incremental reflow */
 709 static gboolean validate_row             (GtkTreeView *tree_view,
 710                                           GtkRBTree   *tree,
 711                                           GtkRBNode   *node,
 712                                           GtkTreeIter *iter,
 713                                           GtkTreePath *path);
 714 static void     validate_visible_area    (GtkTreeView *tree_view);
 715 static gboolean validate_rows_handler    (GtkTreeView *tree_view);
 716 static gboolean do_validate_rows         (GtkTreeView *tree_view,
 717                                           gboolean     size_request);
 718 static gboolean validate_rows            (GtkTreeView *tree_view);
 719 static gboolean presize_handler_callback (gpointer     data);
 720 static void     install_presize_handler  (GtkTreeView *tree_view);
 721 static void     install_scroll_sync_handler (GtkTreeView *tree_view);
 722 static void     gtk_tree_view_set_top_row   (GtkTreeView *tree_view,
 723                                              GtkTreePath *path,
 724                                              gint         offset);
 725 static void     gtk_tree_view_dy_to_top_row (GtkTreeView *tree_view);
 726 static void     gtk_tree_view_top_row_to_dy (GtkTreeView *tree_view);
 727 static void     invalidate_empty_focus      (GtkTreeView *tree_view);
 728
 729 /* Internal functions */
 730 static gboolean gtk_tree_view_is_expander_column             (GtkTreeView        *tree_view,
 731                                                               GtkTreeViewColumn  *column);
 732 static inline gboolean gtk_tree_view_draw_expanders          (GtkTreeView        *tree_view);
 733 static void     gtk_tree_view_add_move_binding               (GtkBindingSet      *binding_set,
 734                                                               guint               keyval,
 735                                                               guint               modmask,
 736                                                               gboolean            add_shifted_binding,
 737                                                               GtkMovementStep     step,
 738                                                               gint                count);
 739 static gint     gtk_tree_view_unref_and_check_selection_tree (GtkTreeView        *tree_view,
 740                                                               GtkRBTree          *tree);
 741 static void     gtk_tree_view_queue_draw_path                (GtkTreeView        *tree_view,
 742                                                               GtkTreePath        *path,
 743                                                               const GdkRectangle *clip_rect);
 744 static void     gtk_tree_view_queue_draw_arrow               (GtkTreeView        *tree_view,
 745                                                               GtkRBTree          *tree,
 746                                                               GtkRBNode          *node);
 747 static void     gtk_tree_view_draw_arrow                     (GtkTreeView        *tree_view,
 748                                                               cairo_t            *cr,
 749                                                               GtkRBTree          *tree,
 750                                                               GtkRBNode          *node);
 751 static void     gtk_tree_view_get_arrow_xrange               (GtkTreeView        *tree_view,
 752                                                               GtkRBTree          *tree,
 753                                                               gint               *x1,
 754                                                               gint               *x2);
 755 static gint     gtk_tree_view_new_column_width               (GtkTreeView        *tree_view,
 756                                                               gint                i,
 757                                                               gint               *x);
 758 static void     gtk_tree_view_adjustment_changed             (GtkAdjustment      *adjustment,
 759                                                               GtkTreeView        *tree_view);
 760 static void     gtk_tree_view_build_tree                     (GtkTreeView        *tree_view,
 761                                                               GtkRBTree          *tree,
 762                                                               GtkTreeIter        *iter,
 763                                                               gint                depth,
 764                                                               gboolean            recurse);
 765 static void     gtk_tree_view_clamp_node_visible             (GtkTreeView        *tree_view,
 766                                                               GtkRBTree          *tree,
 767                                                               GtkRBNode          *node);
 768 static void     gtk_tree_view_clamp_column_visible           (GtkTreeView        *tree_view,
 769                                                               GtkTreeViewColumn  *column,
 770                                                               gboolean            focus_to_cell);
 771 static gboolean gtk_tree_view_maybe_begin_dragging_row       (GtkTreeView        *tree_view,
 772                                                               GdkEventMotion     *event);
 773 static void     gtk_tree_view_focus_to_cursor                (GtkTreeView        *tree_view);
 774 static void     gtk_tree_view_move_cursor_up_down            (GtkTreeView        *tree_view,
 775                                                               gint                count);
 776 static void     gtk_tree_view_move_cursor_page_up_down       (GtkTreeView        *tree_view,
 777                                                               gint                count);
 778 static void     gtk_tree_view_move_cursor_left_right         (GtkTreeView        *tree_view,
 779                                                               gint                count);
 780 static void     gtk_tree_view_move_cursor_start_end          (GtkTreeView        *tree_view,
 781                                                               gint                count);
 782 static gboolean gtk_tree_view_real_collapse_row              (GtkTreeView        *tree_view,
 783                                                               GtkTreePath        *path,
 784                                                               GtkRBTree          *tree,
 785                                                               GtkRBNode          *node,
 786                                                               gboolean            animate);
 787 static gboolean gtk_tree_view_real_expand_row                (GtkTreeView        *tree_view,
 788                                                               GtkTreePath        *path,
 789                                                               GtkRBTree          *tree,
 790                                                               GtkRBNode          *node,
 791                                                               gboolean            open_all,
 792                                                               gboolean            animate);
 793 static void     gtk_tree_view_real_set_cursor                (GtkTreeView        *tree_view,
 794                                                               GtkTreePath        *path,
 795                                                               SetCursorFlags      flags);
 796 static gboolean gtk_tree_view_has_can_focus_cell             (GtkTreeView        *tree_view);
 797 static void     column_sizing_notify                         (GObject            *object,
 798                                                               GParamSpec         *pspec,
 799                                                               gpointer            data);
 800 static void     gtk_tree_view_stop_rubber_band               (GtkTreeView        *tree_view);
 801 static void     update_prelight                              (GtkTreeView        *tree_view,
 802                                                               int                 x,
 803                                                               int                 y);
 804
 805 static inline gint gtk_tree_view_get_effective_header_height (GtkTreeView *tree_view);
 806
 807 static inline gint gtk_tree_view_get_cell_area_y_offset      (GtkTreeView *tree_view,
 808                                                               GtkRBTree   *tree,
 809                                                               GtkRBNode   *node,
 810                                                               gint         vertical_separator);
 811 static inline gint gtk_tree_view_get_cell_area_height        (GtkTreeView *tree_view,
 812                                                               GtkRBNode   *node,
 813                                                               gint         vertical_separator);
 814
 815 static inline gint gtk_tree_view_get_row_y_offset            (GtkTreeView *tree_view,
 816                                                               GtkRBTree   *tree,
 817                                                               GtkRBNode   *node);
 818 static inline gint gtk_tree_view_get_row_height              (GtkTreeView *tree_view,
 819                                                               GtkRBNode   *node);
 820
 821 /* interactive search */
 822 static void     gtk_tree_view_ensure_interactive_directory (GtkTreeView *tree_view);
 823 static void     gtk_tree_view_search_dialog_hide        (GtkWidget        *search_dialog,
 824                                                          GtkTreeView      *tree_view,
 825                                                          GdkDevice        *device);
 826 static void     gtk_tree_view_search_position_func      (GtkTreeView      *tree_view,
 827                                                          GtkWidget        *search_dialog,
 828                                                          gpointer          user_data);
 829 static void     gtk_tree_view_search_disable_popdown    (GtkEntry         *entry,
 830                                                          GtkMenu          *menu,
 831                                                          gpointer          data);
 832 static void     gtk_tree_view_search_preedit_changed    (GtkIMContext     *im_context,
 833                                                          GtkTreeView      *tree_view);
 834 static void     gtk_tree_view_search_activate           (GtkEntry         *entry,
 835                                                          GtkTreeView      *tree_view);
 836 static gboolean gtk_tree_view_real_search_enable_popdown(gpointer          data);
 837 static void     gtk_tree_view_search_enable_popdown     (GtkWidget        *widget,
 838                                                          gpointer          data);
 839 static gboolean gtk_tree_view_search_delete_event       (GtkWidget        *widget,
 840                                                          GdkEventAny      *event,
 841                                                          GtkTreeView      *tree_view);
 842 static gboolean gtk_tree_view_search_button_press_event (GtkWidget        *widget,
 843                                                          GdkEventButton   *event,
 844                                                          GtkTreeView      *tree_view);
 845 static gboolean gtk_tree_view_search_scroll_event       (GtkWidget        *entry,
 846                                                          GdkEventScroll   *event,
 847                                                          GtkTreeView      *tree_view);
 848 static gboolean gtk_tree_view_search_key_press_event    (GtkWidget        *entry,
 849                                                          GdkEventKey      *event,
 850                                                          GtkTreeView      *tree_view);
 851 static gboolean gtk_tree_view_search_move               (GtkWidget        *window,
 852                                                          GtkTreeView      *tree_view,
 853                                                          gboolean          up);
 854 static gboolean gtk_tree_view_search_equal_func         (GtkTreeModel     *model,
 855                                                          gint              column,
 856                                                          const gchar      *key,
 857                                                          GtkTreeIter      *iter,
 858                                                          gpointer          search_data);
 859 static gboolean gtk_tree_view_search_iter               (GtkTreeModel     *model,
 860                                                          GtkTreeSelection *selection,
 861                                                          GtkTreeIter      *iter,
 862                                                          const gchar      *text,
 863                                                          gint             *count,
 864                                                          gint              n);
 865 static void     gtk_tree_view_search_init               (GtkWidget        *entry,
 866                                                          GtkTreeView      *tree_view);
 867 static void     gtk_tree_view_put                       (GtkTreeView      *tree_view,
 868                                                          GtkWidget        *child_widget,
 869                                                          gint              x,
 870                                                          gint              y,
 871                                                          gint              width,
 872                                                          gint              height);
 873 static gboolean gtk_tree_view_start_editing             (GtkTreeView      *tree_view,
 874                                                          GtkTreePath      *cursor_path,
 875                                                          gboolean          edit_only);
 876 static void gtk_tree_view_stop_editing                  (GtkTreeView *tree_view,
 877                                                          gboolean     cancel_editing);
 878 static gboolean gtk_tree_view_real_start_interactive_search (GtkTreeView *tree_view,
 879                                                              GdkDevice   *device,
 880                                                              gboolean     keybinding);
 881 static gboolean gtk_tree_view_start_interactive_search      (GtkTreeView *tree_view);
 882 static GtkTreeViewColumn *gtk_tree_view_get_drop_column (GtkTreeView       *tree_view,
 883                                                          GtkTreeViewColumn *column,
 884                                                          gint               drop_position);
 885
 886 /* GtkBuildable */
 887 static void     gtk_tree_view_buildable_add_child          (GtkBuildable      *tree_view,
 888                                                             GtkBuilder        *builder,
 889                                                             GObject           *child,
 890                                                             const gchar       *type);
 891 static GObject *gtk_tree_view_buildable_get_internal_child (GtkBuildable      *buildable,
 892                                                             GtkBuilder        *builder,
 893                                                             const gchar       *childname);
 894 static void     gtk_tree_view_buildable_init               (GtkBuildableIface *iface);
 895
 896 static GtkAdjustment *gtk_tree_view_do_get_hadjustment (GtkTreeView   *tree_view);
 897 static void           gtk_tree_view_do_set_hadjustment (GtkTreeView   *tree_view,
 898                                                         GtkAdjustment *adjustment);
 899 static GtkAdjustment *gtk_tree_view_do_get_vadjustment (GtkTreeView   *tree_view);
 900 static void           gtk_tree_view_do_set_vadjustment (GtkTreeView   *tree_view,
 901                                                         GtkAdjustment *adjustment);
 902
 903 static gboolean scroll_row_timeout                   (gpointer     data);
 904 static void     add_scroll_timeout                   (GtkTreeView *tree_view);
 905 static void     remove_scroll_timeout                (GtkTreeView *tree_view);
 906
 907 static guint tree_view_signals [LAST_SIGNAL] = { 0 };
 908
 909 \f
 910
 911 /* GType Methods
 912  */
 913
 914 G_DEFINE_TYPE_WITH_CODE (GtkTreeView, gtk_tree_view, GTK_TYPE_CONTAINER,
 915                          G_IMPLEMENT_INTERFACE (GTK_TYPE_BUILDABLE,
 916                                                 gtk_tree_view_buildable_init)
 917                          G_IMPLEMENT_INTERFACE (GTK_TYPE_SCROLLABLE, NULL))
 918
 919 static void
 920 gtk_tree_view_class_init (GtkTreeViewClass *class)
 921 {
 922   GObjectClass *o_class;
 923   GtkWidgetClass *widget_class;
 924   GtkContainerClass *container_class;
 925   GtkBindingSet *binding_set;
 926
 927   binding_set = gtk_binding_set_by_class (class);
 928
 929   o_class = (GObjectClass *) class;
 930   widget_class = (GtkWidgetClass *) class;
 931   container_class = (GtkContainerClass *) class;
 932
 933   /* GObject signals */
 934   o_class->set_property = gtk_tree_view_set_property;
 935   o_class->get_property = gtk_tree_view_get_property;
 936   o_class->finalize = gtk_tree_view_finalize;
 937
 938   /* GtkWidget signals */
 939   widget_class->destroy = gtk_tree_view_destroy;
 940   widget_class->map = gtk_tree_view_map;
 941   widget_class->realize = gtk_tree_view_realize;
 942   widget_class->unrealize = gtk_tree_view_unrealize;
 943   widget_class->get_preferred_width = gtk_tree_view_get_preferred_width;
 944   widget_class->get_preferred_height = gtk_tree_view_get_preferred_height;
 945   widget_class->size_allocate = gtk_tree_view_size_allocate;
 946   widget_class->button_press_event = gtk_tree_view_button_press;
 947   widget_class->button_release_event = gtk_tree_view_button_release;
 948   widget_class->grab_broken_event = gtk_tree_view_grab_broken;
 949   /*widget_class->configure_event = gtk_tree_view_configure;*/
 950   widget_class->motion_notify_event = gtk_tree_view_motion;
 951   widget_class->draw = gtk_tree_view_draw;
 952   widget_class->key_press_event = gtk_tree_view_key_press;
 953   widget_class->key_release_event = gtk_tree_view_key_release;
 954   widget_class->enter_notify_event = gtk_tree_view_enter_notify;
 955   widget_class->leave_notify_event = gtk_tree_view_leave_notify;
 956   widget_class->focus_out_event = gtk_tree_view_focus_out;
 957   widget_class->drag_begin = gtk_tree_view_drag_begin;
 958   widget_class->drag_end = gtk_tree_view_drag_end;
 959   widget_class->drag_data_get = gtk_tree_view_drag_data_get;
 960   widget_class->drag_data_delete = gtk_tree_view_drag_data_delete;
 961   widget_class->drag_leave = gtk_tree_view_drag_leave;
 962   widget_class->drag_motion = gtk_tree_view_drag_motion;
 963   widget_class->drag_drop = gtk_tree_view_drag_drop;
 964   widget_class->drag_data_received = gtk_tree_view_drag_data_received;
 965   widget_class->focus = gtk_tree_view_focus;
 966   widget_class->grab_focus = gtk_tree_view_grab_focus;
 967   widget_class->style_updated = gtk_tree_view_style_updated;
 968   widget_class->grab_notify = gtk_tree_view_grab_notify;
 969   widget_class->state_flags_changed = gtk_tree_view_state_flags_changed;
 970
 971   /* GtkContainer signals */
 972   container_class->remove = gtk_tree_view_remove;
 973   container_class->forall = gtk_tree_view_forall;
 974   container_class->set_focus_child = gtk_tree_view_set_focus_child;
 975   container_class->get_path_for_child = gtk_tree_view_get_path_for_child;
 976
 977   class->move_cursor = gtk_tree_view_real_move_cursor;
 978   class->select_all = gtk_tree_view_real_select_all;
 979   class->unselect_all = gtk_tree_view_real_unselect_all;
 980   class->select_cursor_row = gtk_tree_view_real_select_cursor_row;
 981   class->toggle_cursor_row = gtk_tree_view_real_toggle_cursor_row;
 982   class->expand_collapse_cursor_row = gtk_tree_view_real_expand_collapse_cursor_row;
 983   class->select_cursor_parent = gtk_tree_view_real_select_cursor_parent;
 984   class->start_interactive_search = gtk_tree_view_start_interactive_search;
 985
 986   /* Properties */
 987
 988   g_object_class_install_property (o_class,
 989                                    PROP_MODEL,
 990                                    g_param_spec_object ("model",
 991                                                         P_("TreeView Model"),
 992                                                         P_("The model for the tree view"),
 993                                                         GTK_TYPE_TREE_MODEL,
 994                                                         GTK_PARAM_READWRITE));
 995
 996   g_object_class_override_property (o_class, PROP_HADJUSTMENT,    "hadjustment");
 997   g_object_class_override_property (o_class, PROP_VADJUSTMENT,    "vadjustment");
 998   g_object_class_override_property (o_class, PROP_HSCROLL_POLICY, "hscroll-policy");
 999   g_object_class_override_property (o_class, PROP_VSCROLL_POLICY, "vscroll-policy");
1000
1001   g_object_class_install_property (o_class,
1002                                    PROP_HEADERS_VISIBLE,
1003                                    g_param_spec_boolean ("headers-visible",
1004                                                          P_("Headers Visible"),
1005                                                          P_("Show the column header buttons"),
1006                                                          TRUE,
1007                                                          GTK_PARAM_READWRITE));
1008
1009   g_object_class_install_property (o_class,
1010                                    PROP_HEADERS_CLICKABLE,
1011                                    g_param_spec_boolean ("headers-clickable",
1012                                                          P_("Headers Clickable"),
1013                                                          P_("Column headers respond to click events"),
1014                                                          TRUE,
1015                                                          GTK_PARAM_READWRITE));
1016
1017   g_object_class_install_property (o_class,
1018                                    PROP_EXPANDER_COLUMN,
1019                                    g_param_spec_object ("expander-column",
1020                                                         P_("Expander Column"),
1021                                                         P_("Set the column for the expander column"),
1022                                                         GTK_TYPE_TREE_VIEW_COLUMN,
1023                                                         GTK_PARAM_READWRITE));
1024
1025   g_object_class_install_property (o_class,
1026                                    PROP_REORDERABLE,
1027                                    g_param_spec_boolean ("reorderable",
1028                                                          P_("Reorderable"),
1029                                                          P_("View is reorderable"),
1030                                                          FALSE,
1031                                                          GTK_PARAM_READWRITE));
1032
1033   g_object_class_install_property (o_class,
1034                                    PROP_RULES_HINT,
1035                                    g_param_spec_boolean ("rules-hint",
1036                                                          P_("Rules Hint"),
1037                                                          P_("Set a hint to the theme engine to draw rows in alternating colors"),
1038                                                          FALSE,
1039                                                          GTK_PARAM_READWRITE));
1040
1041     g_object_class_install_property (o_class,
1042                                      PROP_ENABLE_SEARCH,
1043                                      g_param_spec_boolean ("enable-search",
1044                                                            P_("Enable Search"),
1045                                                            P_("View allows user to search through columns interactively"),
1046                                                            TRUE,
1047                                                            GTK_PARAM_READWRITE));
1048
1049     g_object_class_install_property (o_class,
1050                                      PROP_SEARCH_COLUMN,
1051                                      g_param_spec_int ("search-column",
1052                                                        P_("Search Column"),
1053                                                        P_("Model column to search through during interactive search"),
1054                                                        -1,
1055                                                        G_MAXINT,
1056                                                        -1,
1057                                                        GTK_PARAM_READWRITE));
1058
1059     /**
1060      * GtkTreeView:fixed-height-mode:
1061      *
1062      * Setting the ::fixed-height-mode property to %TRUE speeds up
1063      * #GtkTreeView by assuming that all rows have the same height.
1064      * Only enable this option if all rows are the same height.
1065      * Please see gtk_tree_view_set_fixed_height_mode() for more
1066      * information on this option.
1067      *
1068      * Since: 2.4
1069      **/
1070     g_object_class_install_property (o_class,
1071                                      PROP_FIXED_HEIGHT_MODE,
1072                                      g_param_spec_boolean ("fixed-height-mode",
1073                                                            P_("Fixed Height Mode"),
1074                                                            P_("Speeds up GtkTreeView by assuming that all rows have the same height"),
1075                                                            FALSE,
1076                                                            GTK_PARAM_READWRITE));
1077
1078     /**
1079      * GtkTreeView:hover-selection:
1080      *
1081      * Enables or disables the hover selection mode of @tree_view.
1082      * Hover selection makes the selected row follow the pointer.
1083      * Currently, this works only for the selection modes
1084      * %GTK_SELECTION_SINGLE and %GTK_SELECTION_BROWSE.
1085      *
1086      * This mode is primarily intended for treeviews in popups, e.g.
1087      * in #GtkComboBox or #GtkEntryCompletion.
1088      *
1089      * Since: 2.6
1090      */
1091     g_object_class_install_property (o_class,
1092                                      PROP_HOVER_SELECTION,
1093                                      g_param_spec_boolean ("hover-selection",
1094                                                            P_("Hover Selection"),
1095                                                            P_("Whether the selection should follow the pointer"),
1096                                                            FALSE,
1097                                                            GTK_PARAM_READWRITE));
1098
1099     /**
1100      * GtkTreeView:hover-expand:
1101      *
1102      * Enables or disables the hover expansion mode of @tree_view.
1103      * Hover expansion makes rows expand or collapse if the pointer moves
1104      * over them.
1105      *
1106      * This mode is primarily intended for treeviews in popups, e.g.
1107      * in #GtkComboBox or #GtkEntryCompletion.
1108      *
1109      * Since: 2.6
1110      */
1111     g_object_class_install_property (o_class,
1112                                      PROP_HOVER_EXPAND,
1113                                      g_param_spec_boolean ("hover-expand",
1114                                                            P_("Hover Expand"),
1115                                                            P_("Whether rows should be expanded/collapsed when the pointer moves over them"),
1116                                                            FALSE,
1117                                                            GTK_PARAM_READWRITE));
1118
1119     /**
1120      * GtkTreeView:show-expanders:
1121      *
1122      * %TRUE if the view has expanders.
1123      *
1124      * Since: 2.12
1125      */
1126     g_object_class_install_property (o_class,
1127                                      PROP_SHOW_EXPANDERS,
1128                                      g_param_spec_boolean ("show-expanders",
1129                                                            P_("Show Expanders"),
1130                                                            P_("View has expanders"),
1131                                                            TRUE,
1132                                                            GTK_PARAM_READWRITE));
1133
1134     /**
1135      * GtkTreeView:level-indentation:
1136      *
1137      * Extra indentation for each level.
1138      *
1139      * Since: 2.12
1140      */
1141     g_object_class_install_property (o_class,
1142                                      PROP_LEVEL_INDENTATION,
1143                                      g_param_spec_int ("level-indentation",
1144                                                        P_("Level Indentation"),
1145                                                        P_("Extra indentation for each level"),
1146                                                        0,
1147                                                        G_MAXINT,
1148                                                        0,
1149                                                        GTK_PARAM_READWRITE));
1150
1151     g_object_class_install_property (o_class,
1152                                      PROP_RUBBER_BANDING,
1153                                      g_param_spec_boolean ("rubber-banding",
1154                                                            P_("Rubber Banding"),
1155                                                            P_("Whether to enable selection of multiple items by dragging the mouse pointer"),
1156                                                            FALSE,
1157                                                            GTK_PARAM_READWRITE));
1158
1159     g_object_class_install_property (o_class,
1160                                      PROP_ENABLE_GRID_LINES,
1161                                      g_param_spec_enum ("enable-grid-lines",
1162                                                         P_("Enable Grid Lines"),
1163                                                         P_("Whether grid lines should be drawn in the tree view"),
1164                                                         GTK_TYPE_TREE_VIEW_GRID_LINES,
1165                                                         GTK_TREE_VIEW_GRID_LINES_NONE,
1166                                                         GTK_PARAM_READWRITE));
1167
1168     g_object_class_install_property (o_class,
1169                                      PROP_ENABLE_TREE_LINES,
1170                                      g_param_spec_boolean ("enable-tree-lines",
1171                                                            P_("Enable Tree Lines"),
1172                                                            P_("Whether tree lines should be drawn in the tree view"),
1173                                                            FALSE,
1174                                                            GTK_PARAM_READWRITE));
1175
1176     g_object_class_install_property (o_class,
1177                                      PROP_TOOLTIP_COLUMN,
1178                                      g_param_spec_int ("tooltip-column",
1179                                                        P_("Tooltip Column"),
1180                                                        P_("The column in the model containing the tooltip texts for the rows"),
1181                                                        -1,
1182                                                        G_MAXINT,
1183                                                        -1,
1184                                                        GTK_PARAM_READWRITE));
1185
1186   /* Style properties */
1187 #define _TREE_VIEW_EXPANDER_SIZE 14
1188 #define _TREE_VIEW_VERTICAL_SEPARATOR 2
1189 #define _TREE_VIEW_HORIZONTAL_SEPARATOR 2
1190
1191   gtk_widget_class_install_style_property (widget_class,
1192                                            g_param_spec_int ("expander-size",
1193                                                              P_("Expander Size"),
1194                                                              P_("Size of the expander arrow"),
1195                                                              0,
1196                                                              G_MAXINT,
1197                                                              _TREE_VIEW_EXPANDER_SIZE,
1198                                                              GTK_PARAM_READABLE));
1199
1200   gtk_widget_class_install_style_property (widget_class,
1201                                            g_param_spec_int ("vertical-separator",
1202                                                              P_("Vertical Separator Width"),
1203                                                              P_("Vertical space between cells.  Must be an even number"),
1204                                                              0,
1205                                                              G_MAXINT,
1206                                                              _TREE_VIEW_VERTICAL_SEPARATOR,
1207                                                              GTK_PARAM_READABLE));
1208
1209   gtk_widget_class_install_style_property (widget_class,
1210                                            g_param_spec_int ("horizontal-separator",
1211                                                              P_("Horizontal Separator Width"),
1212                                                              P_("Horizontal space between cells.  Must be an even number"),
1213                                                              0,
1214                                                              G_MAXINT,
1215                                                              _TREE_VIEW_HORIZONTAL_SEPARATOR,
1216                                                              GTK_PARAM_READABLE));
1217
1218   gtk_widget_class_install_style_property (widget_class,
1219                                            g_param_spec_boolean ("allow-rules",
1220                                                                  P_("Allow Rules"),
1221                                                                  P_("Allow drawing of alternating color rows"),
1222                                                                  TRUE,
1223                                                                  GTK_PARAM_READABLE));
1224
1225   gtk_widget_class_install_style_property (widget_class,
1226                                            g_param_spec_boolean ("indent-expanders",
1227                                                                  P_("Indent Expanders"),
1228                                                                  P_("Make the expanders indented"),
1229                                                                  TRUE,
1230                                                                  GTK_PARAM_READABLE));
1231
1232   gtk_widget_class_install_style_property (widget_class,
1233                                            g_param_spec_boxed ("even-row-color",
1234                                                                P_("Even Row Color"),
1235                                                                P_("Color to use for even rows"),
1236                                                                GDK_TYPE_COLOR,
1237                                                                GTK_PARAM_READABLE));
1238
1239   gtk_widget_class_install_style_property (widget_class,
1240                                            g_param_spec_boxed ("odd-row-color",
1241                                                                P_("Odd Row Color"),
1242                                                                P_("Color to use for odd rows"),
1243                                                                GDK_TYPE_COLOR,
1244                                                                GTK_PARAM_READABLE));
1245
1246   gtk_widget_class_install_style_property (widget_class,
1247                                            g_param_spec_int ("grid-line-width",
1248                                                              P_("Grid line width"),
1249                                                              P_("Width, in pixels, of the tree view grid lines"),
1250                                                              0, G_MAXINT, 1,
1251                                                              GTK_PARAM_READABLE));
1252
1253   gtk_widget_class_install_style_property (widget_class,
1254                                            g_param_spec_int ("tree-line-width",
1255                                                              P_("Tree line width"),
1256                                                              P_("Width, in pixels, of the tree view lines"),
1257                                                              0, G_MAXINT, 1,
1258                                                              GTK_PARAM_READABLE));
1259
1260   gtk_widget_class_install_style_property (widget_class,
1261                                            g_param_spec_string ("grid-line-pattern",
1262                                                                 P_("Grid line pattern"),
1263                                                                 P_("Dash pattern used to draw the tree view grid lines"),
1264                                                                 "\1\1",
1265                                                                 GTK_PARAM_READABLE));
1266
1267   gtk_widget_class_install_style_property (widget_class,
1268                                            g_param_spec_string ("tree-line-pattern",
1269                                                                 P_("Tree line pattern"),
1270                                                                 P_("Dash pattern used to draw the tree view lines"),
1271                                                                 "\1\1",
1272                                                                 GTK_PARAM_READABLE));
1273
1274   /* Signals */
1275   /**
1276    * GtkTreeView::row-activated:
1277    * @tree_view: the object on which the signal is emitted
1278    * @path: the #GtkTreePath for the activated row
1279    * @column: the #GtkTreeViewColumn in which the activation occurred
1280    *
1281    * The "row-activated" signal is emitted when the method
1282    * gtk_tree_view_row_activated() is called or the user double clicks
1283    * a treeview row. It is also emitted when a non-editable row is
1284    * selected and one of the keys: Space, Shift+Space, Return or
1285    * Enter is pressed.
1286    *
1287    * For selection handling refer to the <link linkend="TreeWidget">tree
1288    * widget conceptual overview</link> as well as #GtkTreeSelection.
1289    */
1290   tree_view_signals[ROW_ACTIVATED] =
1291     g_signal_new (I_("row-activated"),
1292                   G_TYPE_FROM_CLASS (o_class),
1293                   G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
1294                   G_STRUCT_OFFSET (GtkTreeViewClass, row_activated),
1295                   NULL, NULL,
1296                   _gtk_marshal_VOID__BOXED_OBJECT,
1297                   G_TYPE_NONE, 2,
1298                   GTK_TYPE_TREE_PATH,
1299                   GTK_TYPE_TREE_VIEW_COLUMN);
1300
1301   /**
1302    * GtkTreeView::test-expand-row:
1303    * @tree_view: the object on which the signal is emitted
1304    * @iter: the tree iter of the row to expand
1305    * @path: a tree path that points to the row
1306    *
1307    * The given row is about to be expanded (show its children nodes). Use this
1308    * signal if you need to control the expandability of individual rows.
1309    *
1310    * Returns: %FALSE to allow expansion, %TRUE to reject
1311    */
1312   tree_view_signals[TEST_EXPAND_ROW] =
1313     g_signal_new (I_("test-expand-row"),
1314                   G_TYPE_FROM_CLASS (o_class),
1315                   G_SIGNAL_RUN_LAST,
1316                   G_STRUCT_OFFSET (GtkTreeViewClass, test_expand_row),
1317                   _gtk_boolean_handled_accumulator, NULL,
1318                   _gtk_marshal_BOOLEAN__BOXED_BOXED,
1319                   G_TYPE_BOOLEAN, 2,
1320                   GTK_TYPE_TREE_ITER,
1321                   GTK_TYPE_TREE_PATH);
1322
1323   /**
1324    * GtkTreeView::test-collapse-row:
1325    * @tree_view: the object on which the signal is emitted
1326    * @iter: the tree iter of the row to collapse
1327    * @path: a tree path that points to the row
1328    *
1329    * The given row is about to be collapsed (hide its children nodes). Use this
1330    * signal if you need to control the collapsibility of individual rows.
1331    *
1332    * Returns: %FALSE to allow collapsing, %TRUE to reject
1333    */
1334   tree_view_signals[TEST_COLLAPSE_ROW] =
1335     g_signal_new (I_("test-collapse-row"),
1336                   G_TYPE_FROM_CLASS (o_class),
1337                   G_SIGNAL_RUN_LAST,
1338                   G_STRUCT_OFFSET (GtkTreeViewClass, test_collapse_row),
1339                   _gtk_boolean_handled_accumulator, NULL,
1340                   _gtk_marshal_BOOLEAN__BOXED_BOXED,
1341                   G_TYPE_BOOLEAN, 2,
1342                   GTK_TYPE_TREE_ITER,
1343                   GTK_TYPE_TREE_PATH);
1344
1345   /**
1346    * GtkTreeView::row-expanded:
1347    * @tree_view: the object on which the signal is emitted
1348    * @iter: the tree iter of the expanded row
1349    * @path: a tree path that points to the row
1350    *
1351    * The given row has been expanded (child nodes are shown).
1352    */
1353   tree_view_signals[ROW_EXPANDED] =
1354     g_signal_new (I_("row-expanded"),
1355                   G_TYPE_FROM_CLASS (o_class),
1356                   G_SIGNAL_RUN_LAST,
1357                   G_STRUCT_OFFSET (GtkTreeViewClass, row_expanded),
1358                   NULL, NULL,
1359                   _gtk_marshal_VOID__BOXED_BOXED,
1360                   G_TYPE_NONE, 2,
1361                   GTK_TYPE_TREE_ITER,
1362                   GTK_TYPE_TREE_PATH);
1363
1364   /**
1365    * GtkTreeView::row-collapsed:
1366    * @tree_view: the object on which the signal is emitted
1367    * @iter: the tree iter of the collapsed row
1368    * @path: a tree path that points to the row
1369    *
1370    * The given row has been collapsed (child nodes are hidden).
1371    */
1372   tree_view_signals[ROW_COLLAPSED] =
1373     g_signal_new (I_("row-collapsed"),
1374                   G_TYPE_FROM_CLASS (o_class),
1375                   G_SIGNAL_RUN_LAST,
1376                   G_STRUCT_OFFSET (GtkTreeViewClass, row_collapsed),
1377                   NULL, NULL,
1378                   _gtk_marshal_VOID__BOXED_BOXED,
1379                   G_TYPE_NONE, 2,
1380                   GTK_TYPE_TREE_ITER,
1381                   GTK_TYPE_TREE_PATH);
1382
1383   /**
1384    * GtkTreeView::columns-changed:
1385    * @tree_view: the object on which the signal is emitted
1386    *
1387    * The number of columns of the treeview has changed.
1388    */
1389   tree_view_signals[COLUMNS_CHANGED] =
1390     g_signal_new (I_("columns-changed"),
1391                   G_TYPE_FROM_CLASS (o_class),
1392                   G_SIGNAL_RUN_LAST,
1393                   G_STRUCT_OFFSET (GtkTreeViewClass, columns_changed),
1394                   NULL, NULL,
1395                   _gtk_marshal_VOID__VOID,
1396                   G_TYPE_NONE, 0);
1397
1398   /**
1399    * GtkTreeView::cursor-changed:
1400    * @tree_view: the object on which the signal is emitted
1401    *
1402    * The position of the cursor (focused cell) has changed.
1403    */
1404   tree_view_signals[CURSOR_CHANGED] =
1405     g_signal_new (I_("cursor-changed"),
1406                   G_TYPE_FROM_CLASS (o_class),
1407                   G_SIGNAL_RUN_LAST,
1408                   G_STRUCT_OFFSET (GtkTreeViewClass, cursor_changed),
1409                   NULL, NULL,
1410                   _gtk_marshal_VOID__VOID,
1411                   G_TYPE_NONE, 0);
1412
1413   tree_view_signals[MOVE_CURSOR] =
1414     g_signal_new (I_("move-cursor"),
1415                   G_TYPE_FROM_CLASS (o_class),
1416                   G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
1417                   G_STRUCT_OFFSET (GtkTreeViewClass, move_cursor),
1418                   NULL, NULL,
1419                   _gtk_marshal_BOOLEAN__ENUM_INT,
1420                   G_TYPE_BOOLEAN, 2,
1421                   GTK_TYPE_MOVEMENT_STEP,
1422                   G_TYPE_INT);
1423
1424   tree_view_signals[SELECT_ALL] =
1425     g_signal_new (I_("select-all"),
1426                   G_TYPE_FROM_CLASS (o_class),
1427                   G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
1428                   G_STRUCT_OFFSET (GtkTreeViewClass, select_all),
1429                   NULL, NULL,
1430                   _gtk_marshal_BOOLEAN__VOID,
1431                   G_TYPE_BOOLEAN, 0);
1432
1433   tree_view_signals[UNSELECT_ALL] =
1434     g_signal_new (I_("unselect-all"),
1435                   G_TYPE_FROM_CLASS (o_class),
1436                   G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
1437                   G_STRUCT_OFFSET (GtkTreeViewClass, unselect_all),
1438                   NULL, NULL,
1439                   _gtk_marshal_BOOLEAN__VOID,
1440                   G_TYPE_BOOLEAN, 0);
1441
1442   tree_view_signals[SELECT_CURSOR_ROW] =
1443     g_signal_new (I_("select-cursor-row"),
1444                   G_TYPE_FROM_CLASS (o_class),
1445                   G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
1446                   G_STRUCT_OFFSET (GtkTreeViewClass, select_cursor_row),
1447                   NULL, NULL,
1448                   _gtk_marshal_BOOLEAN__BOOLEAN,
1449                   G_TYPE_BOOLEAN, 1,
1450                   G_TYPE_BOOLEAN);
1451
1452   tree_view_signals[TOGGLE_CURSOR_ROW] =
1453     g_signal_new (I_("toggle-cursor-row"),
1454                   G_TYPE_FROM_CLASS (o_class),
1455                   G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
1456                   G_STRUCT_OFFSET (GtkTreeViewClass, toggle_cursor_row),
1457                   NULL, NULL,
1458                   _gtk_marshal_BOOLEAN__VOID,
1459                   G_TYPE_BOOLEAN, 0);
1460
1461   tree_view_signals[EXPAND_COLLAPSE_CURSOR_ROW] =
1462     g_signal_new (I_("expand-collapse-cursor-row"),
1463                   G_TYPE_FROM_CLASS (o_class),
1464                   G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
1465                   G_STRUCT_OFFSET (GtkTreeViewClass, expand_collapse_cursor_row),
1466                   NULL, NULL,
1467                   _gtk_marshal_BOOLEAN__BOOLEAN_BOOLEAN_BOOLEAN,
1468                   G_TYPE_BOOLEAN, 3,
1469                   G_TYPE_BOOLEAN,
1470                   G_TYPE_BOOLEAN,
1471                   G_TYPE_BOOLEAN);
1472
1473   tree_view_signals[SELECT_CURSOR_PARENT] =
1474     g_signal_new (I_("select-cursor-parent"),
1475                   G_TYPE_FROM_CLASS (o_class),
1476                   G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
1477                   G_STRUCT_OFFSET (GtkTreeViewClass, select_cursor_parent),
1478                   NULL, NULL,
1479                   _gtk_marshal_BOOLEAN__VOID,
1480                   G_TYPE_BOOLEAN, 0);
1481
1482   tree_view_signals[START_INTERACTIVE_SEARCH] =
1483     g_signal_new (I_("start-interactive-search"),
1484                   G_TYPE_FROM_CLASS (o_class),
1485                   G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
1486                   G_STRUCT_OFFSET (GtkTreeViewClass, start_interactive_search),
1487                   NULL, NULL,
1488                   _gtk_marshal_BOOLEAN__VOID,
1489                   G_TYPE_BOOLEAN, 0);
1490
1491   /* Key bindings */
1492   gtk_tree_view_add_move_binding (binding_set, GDK_KEY_Up, 0, TRUE,
1493                                   GTK_MOVEMENT_DISPLAY_LINES, -1);
1494   gtk_tree_view_add_move_binding (binding_set, GDK_KEY_KP_Up, 0, TRUE,
1495                                   GTK_MOVEMENT_DISPLAY_LINES, -1);
1496
1497   gtk_tree_view_add_move_binding (binding_set, GDK_KEY_Down, 0, TRUE,
1498                                   GTK_MOVEMENT_DISPLAY_LINES, 1);
1499   gtk_tree_view_add_move_binding (binding_set, GDK_KEY_KP_Down, 0, TRUE,
1500                                   GTK_MOVEMENT_DISPLAY_LINES, 1);
1501
1502   gtk_tree_view_add_move_binding (binding_set, GDK_KEY_p, GDK_CONTROL_MASK, FALSE,
1503                                   GTK_MOVEMENT_DISPLAY_LINES, -1);
1504
1505   gtk_tree_view_add_move_binding (binding_set, GDK_KEY_n, GDK_CONTROL_MASK, FALSE,
1506                                   GTK_MOVEMENT_DISPLAY_LINES, 1);
1507
1508   gtk_tree_view_add_move_binding (binding_set, GDK_KEY_Home, 0, TRUE,
1509                                   GTK_MOVEMENT_BUFFER_ENDS, -1);
1510   gtk_tree_view_add_move_binding (binding_set, GDK_KEY_KP_Home, 0, TRUE,
1511                                   GTK_MOVEMENT_BUFFER_ENDS, -1);
1512
1513   gtk_tree_view_add_move_binding (binding_set, GDK_KEY_End, 0, TRUE,
1514                                   GTK_MOVEMENT_BUFFER_ENDS, 1);
1515   gtk_tree_view_add_move_binding (binding_set, GDK_KEY_KP_End, 0, TRUE,
1516                                   GTK_MOVEMENT_BUFFER_ENDS, 1);
1517
1518   gtk_tree_view_add_move_binding (binding_set, GDK_KEY_Page_Up, 0, TRUE,
1519                                   GTK_MOVEMENT_PAGES, -1);
1520   gtk_tree_view_add_move_binding (binding_set, GDK_KEY_KP_Page_Up, 0, TRUE,
1521                                   GTK_MOVEMENT_PAGES, -1);
1522
1523   gtk_tree_view_add_move_binding (binding_set, GDK_KEY_Page_Down, 0, TRUE,
1524                                   GTK_MOVEMENT_PAGES, 1);
1525   gtk_tree_view_add_move_binding (binding_set, GDK_KEY_KP_Page_Down, 0, TRUE,
1526                                   GTK_MOVEMENT_PAGES, 1);
1527
1528
1529   gtk_binding_entry_add_signal (binding_set, GDK_KEY_Right, 0, "move-cursor", 2,
1530                                 G_TYPE_ENUM, GTK_MOVEMENT_VISUAL_POSITIONS,
1531                                 G_TYPE_INT, 1);
1532
1533   gtk_binding_entry_add_signal (binding_set, GDK_KEY_Left, 0, "move-cursor", 2,
1534                                 G_TYPE_ENUM, GTK_MOVEMENT_VISUAL_POSITIONS,
1535                                 G_TYPE_INT, -1);
1536
1537   gtk_binding_entry_add_signal (binding_set, GDK_KEY_KP_Right, 0, "move-cursor", 2,
1538                                 G_TYPE_ENUM, GTK_MOVEMENT_VISUAL_POSITIONS,
1539                                 G_TYPE_INT, 1);
1540
1541   gtk_binding_entry_add_signal (binding_set, GDK_KEY_KP_Left, 0, "move-cursor", 2,
1542                                 G_TYPE_ENUM, GTK_MOVEMENT_VISUAL_POSITIONS,
1543                                 G_TYPE_INT, -1);
1544
1545   gtk_binding_entry_add_signal (binding_set, GDK_KEY_Right, GDK_CONTROL_MASK,
1546                                 "move-cursor", 2,
1547                                 G_TYPE_ENUM, GTK_MOVEMENT_VISUAL_POSITIONS,
1548                                 G_TYPE_INT, 1);
1549
1550   gtk_binding_entry_add_signal (binding_set, GDK_KEY_Left, GDK_CONTROL_MASK,
1551                                 "move-cursor", 2,
1552                                 G_TYPE_ENUM, GTK_MOVEMENT_VISUAL_POSITIONS,
1553                                 G_TYPE_INT, -1);
1554
1555   gtk_binding_entry_add_signal (binding_set, GDK_KEY_KP_Right, GDK_CONTROL_MASK,
1556                                 "move-cursor", 2,
1557                                 G_TYPE_ENUM, GTK_MOVEMENT_VISUAL_POSITIONS,
1558                                 G_TYPE_INT, 1);
1559
1560   gtk_binding_entry_add_signal (binding_set, GDK_KEY_KP_Left, GDK_CONTROL_MASK,
1561                                 "move-cursor", 2,
1562                                 G_TYPE_ENUM, GTK_MOVEMENT_VISUAL_POSITIONS,
1563                                 G_TYPE_INT, -1);
1564
1565   gtk_binding_entry_add_signal (binding_set, GDK_KEY_space, GDK_CONTROL_MASK, "toggle-cursor-row", 0);
1566   gtk_binding_entry_add_signal (binding_set, GDK_KEY_KP_Space, GDK_CONTROL_MASK, "toggle-cursor-row", 0);
1567
1568   gtk_binding_entry_add_signal (binding_set, GDK_KEY_a, GDK_CONTROL_MASK, "select-all", 0);
1569   gtk_binding_entry_add_signal (binding_set, GDK_KEY_slash, GDK_CONTROL_MASK, "select-all", 0);
1570
1571   gtk_binding_entry_add_signal (binding_set, GDK_KEY_A, GDK_CONTROL_MASK | GDK_SHIFT_MASK, "unselect-all", 0);
1572   gtk_binding_entry_add_signal (binding_set, GDK_KEY_backslash, GDK_CONTROL_MASK, "unselect-all", 0);
1573
1574   gtk_binding_entry_add_signal (binding_set, GDK_KEY_space, GDK_SHIFT_MASK, "select-cursor-row", 1,
1575                                 G_TYPE_BOOLEAN, TRUE);
1576   gtk_binding_entry_add_signal (binding_set, GDK_KEY_KP_Space, GDK_SHIFT_MASK, "select-cursor-row", 1,
1577                                 G_TYPE_BOOLEAN, TRUE);
1578
1579   gtk_binding_entry_add_signal (binding_set, GDK_KEY_space, 0, "select-cursor-row", 1,
1580                                 G_TYPE_BOOLEAN, TRUE);
1581   gtk_binding_entry_add_signal (binding_set, GDK_KEY_KP_Space, 0, "select-cursor-row", 1,
1582                                 G_TYPE_BOOLEAN, TRUE);
1583   gtk_binding_entry_add_signal (binding_set, GDK_KEY_Return, 0, "select-cursor-row", 1,
1584                                 G_TYPE_BOOLEAN, TRUE);
1585   gtk_binding_entry_add_signal (binding_set, GDK_KEY_ISO_Enter, 0, "select-cursor-row", 1,
1586                                 G_TYPE_BOOLEAN, TRUE);
1587   gtk_binding_entry_add_signal (binding_set, GDK_KEY_KP_Enter, 0, "select-cursor-row", 1,
1588                                 G_TYPE_BOOLEAN, TRUE);
1589
1590   /* expand and collapse rows */
1591   gtk_binding_entry_add_signal (binding_set, GDK_KEY_plus, 0, "expand-collapse-cursor-row", 3,
1592                                 G_TYPE_BOOLEAN, TRUE,
1593                                 G_TYPE_BOOLEAN, TRUE,
1594                                 G_TYPE_BOOLEAN, FALSE);
1595
1596   gtk_binding_entry_add_signal (binding_set, GDK_KEY_asterisk, 0,
1597                                 "expand-collapse-cursor-row", 3,
1598                                 G_TYPE_BOOLEAN, TRUE,
1599                                 G_TYPE_BOOLEAN, TRUE,
1600                                 G_TYPE_BOOLEAN, TRUE);
1601   gtk_binding_entry_add_signal (binding_set, GDK_KEY_KP_Multiply, 0,
1602                                 "expand-collapse-cursor-row", 3,
1603                                 G_TYPE_BOOLEAN, TRUE,
1604                                 G_TYPE_BOOLEAN, TRUE,
1605                                 G_TYPE_BOOLEAN, TRUE);
1606
1607   gtk_binding_entry_add_signal (binding_set, GDK_KEY_slash, 0,
1608                                 "expand-collapse-cursor-row", 3,
1609                                 G_TYPE_BOOLEAN, TRUE,
1610                                 G_TYPE_BOOLEAN, FALSE,
1611                                 G_TYPE_BOOLEAN, FALSE);
1612   gtk_binding_entry_add_signal (binding_set, GDK_KEY_KP_Divide, 0,
1613                                 "expand-collapse-cursor-row", 3,
1614                                 G_TYPE_BOOLEAN, TRUE,
1615                                 G_TYPE_BOOLEAN, FALSE,
1616                                 G_TYPE_BOOLEAN, FALSE);
1617
1618   /* Not doable on US keyboards */
1619   gtk_binding_entry_add_signal (binding_set, GDK_KEY_plus, GDK_SHIFT_MASK, "expand-collapse-cursor-row", 3,
1620                                 G_TYPE_BOOLEAN, TRUE,
1621                                 G_TYPE_BOOLEAN, TRUE,
1622                                 G_TYPE_BOOLEAN, TRUE);
1623   gtk_binding_entry_add_signal (binding_set, GDK_KEY_KP_Add, 0, "expand-collapse-cursor-row", 3,
1624                                 G_TYPE_BOOLEAN, TRUE,
1625                                 G_TYPE_BOOLEAN, TRUE,
1626                                 G_TYPE_BOOLEAN, FALSE);
1627   gtk_binding_entry_add_signal (binding_set, GDK_KEY_KP_Add, GDK_SHIFT_MASK, "expand-collapse-cursor-row", 3,
1628                                 G_TYPE_BOOLEAN, TRUE,
1629                                 G_TYPE_BOOLEAN, TRUE,
1630                                 G_TYPE_BOOLEAN, TRUE);
1631   gtk_binding_entry_add_signal (binding_set, GDK_KEY_KP_Add, GDK_SHIFT_MASK, "expand-collapse-cursor-row", 3,
1632                                 G_TYPE_BOOLEAN, TRUE,
1633                                 G_TYPE_BOOLEAN, TRUE,
1634                                 G_TYPE_BOOLEAN, TRUE);
1635   gtk_binding_entry_add_signal (binding_set, GDK_KEY_Right, GDK_SHIFT_MASK,
1636                                 "expand-collapse-cursor-row", 3,
1637                                 G_TYPE_BOOLEAN, FALSE,
1638                                 G_TYPE_BOOLEAN, TRUE,
1639                                 G_TYPE_BOOLEAN, TRUE);
1640   gtk_binding_entry_add_signal (binding_set, GDK_KEY_KP_Right, GDK_SHIFT_MASK,
1641                                 "expand-collapse-cursor-row", 3,
1642                                 G_TYPE_BOOLEAN, FALSE,
1643                                 G_TYPE_BOOLEAN, TRUE,
1644                                 G_TYPE_BOOLEAN, TRUE);
1645   gtk_binding_entry_add_signal (binding_set, GDK_KEY_Right,
1646                                 GDK_CONTROL_MASK | GDK_SHIFT_MASK,
1647                                 "expand-collapse-cursor-row", 3,
1648                                 G_TYPE_BOOLEAN, FALSE,
1649                                 G_TYPE_BOOLEAN, TRUE,
1650                                 G_TYPE_BOOLEAN, TRUE);
1651   gtk_binding_entry_add_signal (binding_set, GDK_KEY_KP_Right,
1652                                 GDK_CONTROL_MASK | GDK_SHIFT_MASK,
1653                                 "expand-collapse-cursor-row", 3,
1654                                 G_TYPE_BOOLEAN, FALSE,
1655                                 G_TYPE_BOOLEAN, TRUE,
1656                                 G_TYPE_BOOLEAN, TRUE);
1657
1658   gtk_binding_entry_add_signal (binding_set, GDK_KEY_minus, 0, "expand-collapse-cursor-row", 3,
1659                                 G_TYPE_BOOLEAN, TRUE,
1660                                 G_TYPE_BOOLEAN, FALSE,
1661                                 G_TYPE_BOOLEAN, FALSE);
1662   gtk_binding_entry_add_signal (binding_set, GDK_KEY_minus, GDK_SHIFT_MASK, "expand-collapse-cursor-row", 3,
1663                                 G_TYPE_BOOLEAN, TRUE,
1664                                 G_TYPE_BOOLEAN, FALSE,
1665                                 G_TYPE_BOOLEAN, TRUE);
1666   gtk_binding_entry_add_signal (binding_set, GDK_KEY_KP_Subtract, 0, "expand-collapse-cursor-row", 3,
1667                                 G_TYPE_BOOLEAN, TRUE,
1668                                 G_TYPE_BOOLEAN, FALSE,
1669                                 G_TYPE_BOOLEAN, FALSE);
1670   gtk_binding_entry_add_signal (binding_set, GDK_KEY_KP_Subtract, GDK_SHIFT_MASK, "expand-collapse-cursor-row", 3,
1671                                 G_TYPE_BOOLEAN, TRUE,
1672                                 G_TYPE_BOOLEAN, FALSE,
1673                                 G_TYPE_BOOLEAN, TRUE);
1674   gtk_binding_entry_add_signal (binding_set, GDK_KEY_Left, GDK_SHIFT_MASK,
1675                                 "expand-collapse-cursor-row", 3,
1676                                 G_TYPE_BOOLEAN, FALSE,
1677                                 G_TYPE_BOOLEAN, FALSE,
1678                                 G_TYPE_BOOLEAN, TRUE);
1679   gtk_binding_entry_add_signal (binding_set, GDK_KEY_KP_Left, GDK_SHIFT_MASK,
1680                                 "expand-collapse-cursor-row", 3,
1681                                 G_TYPE_BOOLEAN, FALSE,
1682                                 G_TYPE_BOOLEAN, FALSE,
1683                                 G_TYPE_BOOLEAN, TRUE);
1684   gtk_binding_entry_add_signal (binding_set, GDK_KEY_Left,
1685                                 GDK_CONTROL_MASK | GDK_SHIFT_MASK,
1686                                 "expand-collapse-cursor-row", 3,
1687                                 G_TYPE_BOOLEAN, FALSE,
1688                                 G_TYPE_BOOLEAN, FALSE,
1689                                 G_TYPE_BOOLEAN, TRUE);
1690   gtk_binding_entry_add_signal (binding_set, GDK_KEY_KP_Left,
1691                                 GDK_CONTROL_MASK | GDK_SHIFT_MASK,
1692                                 "expand-collapse-cursor-row", 3,
1693                                 G_TYPE_BOOLEAN, FALSE,
1694                                 G_TYPE_BOOLEAN, FALSE,
1695                                 G_TYPE_BOOLEAN, TRUE);
1696
1697   gtk_binding_entry_add_signal (binding_set, GDK_KEY_BackSpace, 0, "select-cursor-parent", 0);
1698   gtk_binding_entry_add_signal (binding_set, GDK_KEY_BackSpace, GDK_CONTROL_MASK, "select-cursor-parent", 0);
1699
1700   gtk_binding_entry_add_signal (binding_set, GDK_KEY_f, GDK_CONTROL_MASK, "start-interactive-search", 0);
1701
1702   gtk_binding_entry_add_signal (binding_set, GDK_KEY_F, GDK_CONTROL_MASK, "start-interactive-search", 0);
1703
1704   g_type_class_add_private (o_class, sizeof (GtkTreeViewPrivate));
1705
1706   gtk_widget_class_set_accessible_type (widget_class, GTK_TYPE_TREE_VIEW_ACCESSIBLE);
1707 }
1708
1709 static void
1710 gtk_tree_view_init (GtkTreeView *tree_view)
1711 {
1712   tree_view->priv = G_TYPE_INSTANCE_GET_PRIVATE (tree_view, GTK_TYPE_TREE_VIEW, GtkTreeViewPrivate);
1713
1714   gtk_widget_set_can_focus (GTK_WIDGET (tree_view), TRUE);
1715   gtk_widget_set_redraw_on_allocate (GTK_WIDGET (tree_view), FALSE);
1716
1717   tree_view->priv->show_expanders = TRUE;
1718   tree_view->priv->draw_keyfocus = TRUE;
1719   tree_view->priv->headers_visible = TRUE;
1720
1721   /* We need some padding */
1722   tree_view->priv->dy = 0;
1723   tree_view->priv->cursor_offset = 0;
1724   tree_view->priv->n_columns = 0;
1725   tree_view->priv->header_height = 1;
1726   tree_view->priv->x_drag = 0;
1727   tree_view->priv->drag_pos = -1;
1728   tree_view->priv->header_has_focus = FALSE;
1729   tree_view->priv->pressed_button = -1;
1730   tree_view->priv->press_start_x = -1;
1731   tree_view->priv->press_start_y = -1;
1732   tree_view->priv->reorderable = FALSE;
1733   tree_view->priv->presize_handler_timer = 0;
1734   tree_view->priv->scroll_sync_timer = 0;
1735   tree_view->priv->fixed_height = -1;
1736   tree_view->priv->fixed_height_mode = FALSE;
1737   tree_view->priv->fixed_height_check = 0;
1738   tree_view->priv->selection = _gtk_tree_selection_new_with_tree_view (tree_view);
1739   tree_view->priv->enable_search = TRUE;
1740   tree_view->priv->search_column = -1;
1741   tree_view->priv->search_position_func = gtk_tree_view_search_position_func;
1742   tree_view->priv->search_equal_func = gtk_tree_view_search_equal_func;
1743   tree_view->priv->search_custom_entry_set = FALSE;
1744   tree_view->priv->typeselect_flush_timeout = 0;
1745   tree_view->priv->init_hadjust_value = TRUE;
1746   tree_view->priv->width = 0;
1747
1748   tree_view->priv->hover_selection = FALSE;
1749   tree_view->priv->hover_expand = FALSE;
1750
1751   tree_view->priv->level_indentation = 0;
1752
1753   tree_view->priv->rubber_banding_enable = FALSE;
1754
1755   tree_view->priv->grid_lines = GTK_TREE_VIEW_GRID_LINES_NONE;
1756   tree_view->priv->tree_lines_enabled = FALSE;
1757
1758   tree_view->priv->tooltip_column = -1;
1759
1760   tree_view->priv->post_validation_flag = FALSE;
1761
1762   tree_view->priv->last_button_x = -1;
1763   tree_view->priv->last_button_y = -1;
1764
1765   tree_view->priv->event_last_x = -10000;
1766   tree_view->priv->event_last_y = -10000;
1767
1768   gtk_tree_view_do_set_vadjustment (tree_view, NULL);
1769   gtk_tree_view_do_set_hadjustment (tree_view, NULL);
1770 }
1771
1772 \f
1773
1774 /* GObject Methods
1775  */
1776
1777 static void
1778 gtk_tree_view_set_property (GObject         *object,
1779                             guint            prop_id,
1780                             const GValue    *value,
1781                             GParamSpec      *pspec)
1782 {
1783   GtkTreeView *tree_view;
1784
1785   tree_view = GTK_TREE_VIEW (object);
1786
1787   switch (prop_id)
1788     {
1789     case PROP_MODEL:
1790       gtk_tree_view_set_model (tree_view, g_value_get_object (value));
1791       break;
1792     case PROP_HADJUSTMENT:
1793       gtk_tree_view_do_set_hadjustment (tree_view, g_value_get_object (value));
1794       break;
1795     case PROP_VADJUSTMENT:
1796       gtk_tree_view_do_set_vadjustment (tree_view, g_value_get_object (value));
1797       break;
1798     case PROP_HSCROLL_POLICY:
1799       tree_view->priv->hscroll_policy = g_value_get_enum (value);
1800       gtk_widget_queue_resize (GTK_WIDGET (tree_view));
1801       break;
1802     case PROP_VSCROLL_POLICY:
1803       tree_view->priv->vscroll_policy = g_value_get_enum (value);
1804       gtk_widget_queue_resize (GTK_WIDGET (tree_view));
1805       break;
1806     case PROP_HEADERS_VISIBLE:
1807       gtk_tree_view_set_headers_visible (tree_view, g_value_get_boolean (value));
1808       break;
1809     case PROP_HEADERS_CLICKABLE:
1810       gtk_tree_view_set_headers_clickable (tree_view, g_value_get_boolean (value));
1811       break;
1812     case PROP_EXPANDER_COLUMN:
1813       gtk_tree_view_set_expander_column (tree_view, g_value_get_object (value));
1814       break;
1815     case PROP_REORDERABLE:
1816       gtk_tree_view_set_reorderable (tree_view, g_value_get_boolean (value));
1817       break;
1818     case PROP_RULES_HINT:
1819       gtk_tree_view_set_rules_hint (tree_view, g_value_get_boolean (value));
1820       break;
1821     case PROP_ENABLE_SEARCH:
1822       gtk_tree_view_set_enable_search (tree_view, g_value_get_boolean (value));
1823       break;
1824     case PROP_SEARCH_COLUMN:
1825       gtk_tree_view_set_search_column (tree_view, g_value_get_int (value));
1826       break;
1827     case PROP_FIXED_HEIGHT_MODE:
1828       gtk_tree_view_set_fixed_height_mode (tree_view, g_value_get_boolean (value));
1829       break;
1830     case PROP_HOVER_SELECTION:
1831       tree_view->priv->hover_selection = g_value_get_boolean (value);
1832       break;
1833     case PROP_HOVER_EXPAND:
1834       tree_view->priv->hover_expand = g_value_get_boolean (value);
1835       break;
1836     case PROP_SHOW_EXPANDERS:
1837       gtk_tree_view_set_show_expanders (tree_view, g_value_get_boolean (value));
1838       break;
1839     case PROP_LEVEL_INDENTATION:
1840       tree_view->priv->level_indentation = g_value_get_int (value);
1841       break;
1842     case PROP_RUBBER_BANDING:
1843       tree_view->priv->rubber_banding_enable = g_value_get_boolean (value);
1844       break;
1845     case PROP_ENABLE_GRID_LINES:
1846       gtk_tree_view_set_grid_lines (tree_view, g_value_get_enum (value));
1847       break;
1848     case PROP_ENABLE_TREE_LINES:
1849       gtk_tree_view_set_enable_tree_lines (tree_view, g_value_get_boolean (value));
1850       break;
1851     case PROP_TOOLTIP_COLUMN:
1852       gtk_tree_view_set_tooltip_column (tree_view, g_value_get_int (value));
1853       break;
1854     default:
1855       G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
1856       break;
1857     }
1858 }
1859
1860 static void
1861 gtk_tree_view_get_property (GObject    *object,
1862                             guint       prop_id,
1863                             GValue     *value,
1864                             GParamSpec *pspec)
1865 {
1866   GtkTreeView *tree_view;
1867
1868   tree_view = GTK_TREE_VIEW (object);
1869
1870   switch (prop_id)
1871     {
1872     case PROP_MODEL:
1873       g_value_set_object (value, tree_view->priv->model);
1874       break;
1875     case PROP_HADJUSTMENT:
1876       g_value_set_object (value, tree_view->priv->hadjustment);
1877       break;
1878     case PROP_VADJUSTMENT:
1879       g_value_set_object (value, tree_view->priv->vadjustment);
1880       break;
1881     case PROP_HSCROLL_POLICY:
1882       g_value_set_enum (value, tree_view->priv->hscroll_policy);
1883       break;
1884     case PROP_VSCROLL_POLICY:
1885       g_value_set_enum (value, tree_view->priv->vscroll_policy);
1886       break;
1887     case PROP_HEADERS_VISIBLE:
1888       g_value_set_boolean (value, gtk_tree_view_get_headers_visible (tree_view));
1889       break;
1890     case PROP_HEADERS_CLICKABLE:
1891       g_value_set_boolean (value, gtk_tree_view_get_headers_clickable (tree_view));
1892       break;
1893     case PROP_EXPANDER_COLUMN:
1894       g_value_set_object (value, tree_view->priv->expander_column);
1895       break;
1896     case PROP_REORDERABLE:
1897       g_value_set_boolean (value, tree_view->priv->reorderable);
1898       break;
1899     case PROP_RULES_HINT:
1900       g_value_set_boolean (value, tree_view->priv->has_rules);
1901       break;
1902     case PROP_ENABLE_SEARCH:
1903       g_value_set_boolean (value, tree_view->priv->enable_search);
1904       break;
1905     case PROP_SEARCH_COLUMN:
1906       g_value_set_int (value, tree_view->priv->search_column);
1907       break;
1908     case PROP_FIXED_HEIGHT_MODE:
1909       g_value_set_boolean (value, tree_view->priv->fixed_height_mode);
1910       break;
1911     case PROP_HOVER_SELECTION:
1912       g_value_set_boolean (value, tree_view->priv->hover_selection);
1913       break;
1914     case PROP_HOVER_EXPAND:
1915       g_value_set_boolean (value, tree_view->priv->hover_expand);
1916       break;
1917     case PROP_SHOW_EXPANDERS:
1918       g_value_set_boolean (value, tree_view->priv->show_expanders);
1919       break;
1920     case PROP_LEVEL_INDENTATION:
1921       g_value_set_int (value, tree_view->priv->level_indentation);
1922       break;
1923     case PROP_RUBBER_BANDING:
1924       g_value_set_boolean (value, tree_view->priv->rubber_banding_enable);
1925       break;
1926     case PROP_ENABLE_GRID_LINES:
1927       g_value_set_enum (value, tree_view->priv->grid_lines);
1928       break;
1929     case PROP_ENABLE_TREE_LINES:
1930       g_value_set_boolean (value, tree_view->priv->tree_lines_enabled);
1931       break;
1932     case PROP_TOOLTIP_COLUMN:
1933       g_value_set_int (value, tree_view->priv->tooltip_column);
1934       break;
1935     default:
1936       G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
1937       break;
1938     }
1939 }
1940
1941 static void
1942 gtk_tree_view_finalize (GObject *object)
1943 {
1944   G_OBJECT_CLASS (gtk_tree_view_parent_class)->finalize (object);
1945 }
1946
1947
1948 static GtkBuildableIface *parent_buildable_iface;
1949
1950 static void
1951 gtk_tree_view_buildable_init (GtkBuildableIface *iface)
1952 {
1953   parent_buildable_iface = g_type_interface_peek_parent (iface);
1954   iface->add_child = gtk_tree_view_buildable_add_child;
1955   iface->get_internal_child = gtk_tree_view_buildable_get_internal_child;
1956 }
1957
1958 static void
1959 gtk_tree_view_buildable_add_child (GtkBuildable *tree_view,
1960                                    GtkBuilder  *builder,
1961                                    GObject     *child,
1962                                    const gchar *type)
1963 {
1964   gtk_tree_view_append_column (GTK_TREE_VIEW (tree_view), GTK_TREE_VIEW_COLUMN (child));
1965 }
1966
1967 static GObject *
1968 gtk_tree_view_buildable_get_internal_child (GtkBuildable      *buildable,
1969                                             GtkBuilder        *builder,
1970                                             const gchar       *childname)
1971 {
1972     if (strcmp (childname, "selection") == 0)
1973       return G_OBJECT (GTK_TREE_VIEW (buildable)->priv->selection);
1974
1975     return parent_buildable_iface->get_internal_child (buildable,
1976                                                        builder,
1977                                                        childname);
1978 }
1979
1980 /* GtkWidget Methods
1981  */
1982
1983 static void
1984 gtk_tree_view_free_rbtree (GtkTreeView *tree_view)
1985 {
1986   _gtk_rbtree_free (tree_view->priv->tree);
1987
1988   tree_view->priv->tree = NULL;
1989   tree_view->priv->button_pressed_node = NULL;
1990   tree_view->priv->button_pressed_tree = NULL;
1991   tree_view->priv->prelight_tree = NULL;
1992   tree_view->priv->prelight_node = NULL;
1993   tree_view->priv->expanded_collapsed_node = NULL;
1994   tree_view->priv->expanded_collapsed_tree = NULL;
1995 }
1996
1997 static void
1998 gtk_tree_view_destroy (GtkWidget *widget)
1999 {
2000   GtkTreeView *tree_view = GTK_TREE_VIEW (widget);
2001   GList *list;
2002
2003   gtk_tree_view_stop_editing (tree_view, TRUE);
2004
2005   if (tree_view->priv->columns != NULL)
2006     {
2007       list = tree_view->priv->columns;
2008       while (list)
2009         {
2010           GtkTreeViewColumn *column;
2011           column = GTK_TREE_VIEW_COLUMN (list->data);
2012           list = list->next;
2013           gtk_tree_view_remove_column (tree_view, column);
2014         }
2015       tree_view->priv->columns = NULL;
2016     }
2017
2018   if (tree_view->priv->tree != NULL)
2019     {
2020       gtk_tree_view_unref_and_check_selection_tree (tree_view, tree_view->priv->tree);
2021
2022       gtk_tree_view_free_rbtree (tree_view);
2023     }
2024
2025   if (tree_view->priv->selection != NULL)
2026     {
2027       _gtk_tree_selection_set_tree_view (tree_view->priv->selection, NULL);
2028       g_object_unref (tree_view->priv->selection);
2029       tree_view->priv->selection = NULL;
2030     }
2031
2032   if (tree_view->priv->scroll_to_path != NULL)
2033     {
2034       gtk_tree_row_reference_free (tree_view->priv->scroll_to_path);
2035       tree_view->priv->scroll_to_path = NULL;
2036     }
2037
2038   if (tree_view->priv->drag_dest_row != NULL)
2039     {
2040       gtk_tree_row_reference_free (tree_view->priv->drag_dest_row);
2041       tree_view->priv->drag_dest_row = NULL;
2042     }
2043
2044   if (tree_view->priv->top_row != NULL)
2045     {
2046       gtk_tree_row_reference_free (tree_view->priv->top_row);
2047       tree_view->priv->top_row = NULL;
2048     }
2049
2050   if (tree_view->priv->column_drop_func_data &&
2051       tree_view->priv->column_drop_func_data_destroy)
2052     {
2053       tree_view->priv->column_drop_func_data_destroy (tree_view->priv->column_drop_func_data);
2054       tree_view->priv->column_drop_func_data = NULL;
2055     }
2056
2057   if (tree_view->priv->destroy_count_destroy &&
2058       tree_view->priv->destroy_count_data)
2059     {
2060       tree_view->priv->destroy_count_destroy (tree_view->priv->destroy_count_data);
2061       tree_view->priv->destroy_count_data = NULL;
2062     }
2063
2064   gtk_tree_row_reference_free (tree_view->priv->anchor);
2065   tree_view->priv->anchor = NULL;
2066
2067   /* destroy interactive search dialog */
2068   if (tree_view->priv->search_window)
2069     {
2070       gtk_widget_destroy (tree_view->priv->search_window);
2071       tree_view->priv->search_window = NULL;
2072       tree_view->priv->search_entry = NULL;
2073       if (tree_view->priv->typeselect_flush_timeout)
2074         {
2075           g_source_remove (tree_view->priv->typeselect_flush_timeout);
2076           tree_view->priv->typeselect_flush_timeout = 0;
2077         }
2078     }
2079
2080   if (tree_view->priv->search_destroy && tree_view->priv->search_user_data)
2081     {
2082       tree_view->priv->search_destroy (tree_view->priv->search_user_data);
2083       tree_view->priv->search_user_data = NULL;
2084     }
2085
2086   if (tree_view->priv->search_position_destroy && tree_view->priv->search_position_user_data)
2087     {
2088       tree_view->priv->search_position_destroy (tree_view->priv->search_position_user_data);
2089       tree_view->priv->search_position_user_data = NULL;
2090     }
2091
2092   if (tree_view->priv->row_separator_destroy && tree_view->priv->row_separator_data)
2093     {
2094       tree_view->priv->row_separator_destroy (tree_view->priv->row_separator_data);
2095       tree_view->priv->row_separator_data = NULL;
2096     }
2097
2098   gtk_tree_view_set_model (tree_view, NULL);
2099
2100   if (tree_view->priv->hadjustment)
2101     {
2102       g_object_unref (tree_view->priv->hadjustment);
2103       tree_view->priv->hadjustment = NULL;
2104     }
2105   if (tree_view->priv->vadjustment)
2106     {
2107       g_object_unref (tree_view->priv->vadjustment);
2108       tree_view->priv->vadjustment = NULL;
2109     }
2110
2111   GTK_WIDGET_CLASS (gtk_tree_view_parent_class)->destroy (widget);
2112 }
2113
2114 /* GtkWidget::map helper */
2115 static void
2116 gtk_tree_view_map_buttons (GtkTreeView *tree_view)
2117 {
2118   GList *list;
2119
2120   g_return_if_fail (gtk_widget_get_mapped (GTK_WIDGET (tree_view)));
2121
2122   if (tree_view->priv->headers_visible)
2123     {
2124       GtkTreeViewColumn *column;
2125       GtkWidget         *button;
2126       GdkWindow         *window;
2127
2128       for (list = tree_view->priv->columns; list; list = list->next)
2129         {
2130           column = list->data;
2131           button = gtk_tree_view_column_get_button (column);
2132
2133           if (gtk_tree_view_column_get_visible (column) && button)
2134             gtk_widget_show_now (button);
2135
2136           if (gtk_widget_get_visible (button) &&
2137               !gtk_widget_get_mapped (button))
2138             gtk_widget_map (button);
2139         }
2140       for (list = tree_view->priv->columns; list; list = list->next)
2141         {
2142           column = list->data;
2143           if (gtk_tree_view_column_get_visible (column) == FALSE)
2144             continue;
2145
2146           window = _gtk_tree_view_column_get_window (column);
2147           if (gtk_tree_view_column_get_resizable (column))
2148             {
2149               gdk_window_raise (window);
2150               gdk_window_show (window);
2151             }
2152           else
2153             gdk_window_hide (window);
2154         }
2155       gdk_window_show (tree_view->priv->header_window);
2156     }
2157 }
2158
2159 static void
2160 gtk_tree_view_map (GtkWidget *widget)
2161 {
2162   GtkTreeView *tree_view = GTK_TREE_VIEW (widget);
2163   GList *tmp_list;
2164
2165   gtk_widget_set_mapped (widget, TRUE);
2166
2167   tmp_list = tree_view->priv->children;
2168   while (tmp_list)
2169     {
2170       GtkTreeViewChild *child = tmp_list->data;
2171       tmp_list = tmp_list->next;
2172
2173       if (gtk_widget_get_visible (child->widget))
2174         {
2175           if (!gtk_widget_get_mapped (child->widget))
2176             gtk_widget_map (child->widget);
2177         }
2178     }
2179   gdk_window_show (tree_view->priv->bin_window);
2180
2181   gtk_tree_view_map_buttons (tree_view);
2182
2183   gdk_window_show (gtk_widget_get_window (widget));
2184 }
2185
2186 static void
2187 gtk_tree_view_ensure_background (GtkTreeView *tree_view)
2188 {
2189   GtkStyleContext *context;
2190
2191   context = gtk_widget_get_style_context (GTK_WIDGET (tree_view));
2192
2193   gtk_style_context_save (context);
2194   gtk_style_context_add_class (context, GTK_STYLE_CLASS_VIEW);
2195   gtk_style_context_set_background (context, tree_view->priv->bin_window);
2196   gtk_style_context_restore (context);
2197
2198   gtk_style_context_set_background (context, tree_view->priv->header_window);
2199 }
2200
2201 static void
2202 gtk_tree_view_realize (GtkWidget *widget)
2203 {
2204   GtkAllocation allocation;
2205   GtkTreeView *tree_view = GTK_TREE_VIEW (widget);
2206   GdkWindow *window;
2207   GdkWindowAttr attributes;
2208   GList *tmp_list;
2209   gint attributes_mask;
2210
2211   gtk_widget_set_realized (widget, TRUE);
2212
2213   gtk_widget_get_allocation (widget, &allocation);
2214
2215   /* Make the main, clipping window */
2216   attributes.window_type = GDK_WINDOW_CHILD;
2217   attributes.x = allocation.x;
2218   attributes.y = allocation.y;
2219   attributes.width = allocation.width;
2220   attributes.height = allocation.height;
2221   attributes.wclass = GDK_INPUT_OUTPUT;
2222   attributes.visual = gtk_widget_get_visual (widget);
2223   attributes.event_mask = GDK_VISIBILITY_NOTIFY_MASK;
2224
2225   attributes_mask = GDK_WA_X | GDK_WA_Y | GDK_WA_VISUAL;
2226
2227   window = gdk_window_new (gtk_widget_get_parent_window (widget),
2228                            &attributes, attributes_mask);
2229   gtk_widget_set_window (widget, window);
2230   gdk_window_set_user_data (window, widget);
2231
2232   gtk_widget_get_allocation (widget, &allocation);
2233
2234   /* Make the window for the tree */
2235   attributes.x = 0;
2236   attributes.y = gtk_tree_view_get_effective_header_height (tree_view);
2237   attributes.width = MAX (tree_view->priv->width, allocation.width);
2238   attributes.height = allocation.height;
2239   attributes.event_mask = (GDK_EXPOSURE_MASK |
2240                            GDK_SCROLL_MASK |
2241                            GDK_POINTER_MOTION_MASK |
2242                            GDK_ENTER_NOTIFY_MASK |
2243                            GDK_LEAVE_NOTIFY_MASK |
2244                            GDK_BUTTON_PRESS_MASK |
2245                            GDK_BUTTON_RELEASE_MASK |
2246                            gtk_widget_get_events (widget));
2247
2248   tree_view->priv->bin_window = gdk_window_new (window,
2249                                                 &attributes, attributes_mask);
2250   gdk_window_set_user_data (tree_view->priv->bin_window, widget);
2251
2252   gtk_widget_get_allocation (widget, &allocation);
2253
2254   /* Make the column header window */
2255   attributes.x = 0;
2256   attributes.y = 0;
2257   attributes.width = MAX (tree_view->priv->width, allocation.width);
2258   attributes.height = tree_view->priv->header_height;
2259   attributes.event_mask = (GDK_EXPOSURE_MASK |
2260                            GDK_SCROLL_MASK |
2261                            GDK_ENTER_NOTIFY_MASK |
2262                            GDK_LEAVE_NOTIFY_MASK |
2263                            GDK_BUTTON_PRESS_MASK |
2264                            GDK_BUTTON_RELEASE_MASK |
2265                            GDK_KEY_PRESS_MASK |
2266                            GDK_KEY_RELEASE_MASK |
2267                            gtk_widget_get_events (widget));
2268
2269   tree_view->priv->header_window = gdk_window_new (window,
2270                                                    &attributes, attributes_mask);
2271   gdk_window_set_user_data (tree_view->priv->header_window, widget);
2272
2273   gtk_tree_view_ensure_background (tree_view);
2274
2275   tmp_list = tree_view->priv->children;
2276   while (tmp_list)
2277     {
2278       GtkTreeViewChild *child = tmp_list->data;
2279       tmp_list = tmp_list->next;
2280
2281       gtk_widget_set_parent_window (child->widget, tree_view->priv->bin_window);
2282     }
2283
2284   for (tmp_list = tree_view->priv->columns; tmp_list; tmp_list = tmp_list->next)
2285     _gtk_tree_view_column_realize_button (GTK_TREE_VIEW_COLUMN (tmp_list->data));
2286
2287   /* Need to call those here, since they create GCs */
2288   gtk_tree_view_set_grid_lines (tree_view, tree_view->priv->grid_lines);
2289   gtk_tree_view_set_enable_tree_lines (tree_view, tree_view->priv->tree_lines_enabled);
2290
2291   install_presize_handler (tree_view);
2292 }
2293
2294 static void
2295 gtk_tree_view_unrealize (GtkWidget *widget)
2296 {
2297   GtkTreeView *tree_view = GTK_TREE_VIEW (widget);
2298   GtkTreeViewPrivate *priv = tree_view->priv;
2299   GtkStyleContext *context;
2300   GList *list;
2301
2302   if (priv->scroll_timeout != 0)
2303     {
2304       g_source_remove (priv->scroll_timeout);
2305       priv->scroll_timeout = 0;
2306     }
2307
2308   if (priv->auto_expand_timeout != 0)
2309     {
2310       g_source_remove (priv->auto_expand_timeout);
2311       priv->auto_expand_timeout = 0;
2312     }
2313
2314   if (priv->open_dest_timeout != 0)
2315     {
2316       g_source_remove (priv->open_dest_timeout);
2317       priv->open_dest_timeout = 0;
2318     }
2319
2320   context = gtk_widget_get_style_context (widget);
2321   gtk_style_context_cancel_animations (context, NULL);
2322
2323   if (priv->presize_handler_timer != 0)
2324     {
2325       g_source_remove (priv->presize_handler_timer);
2326       priv->presize_handler_timer = 0;
2327     }
2328
2329   if (priv->validate_rows_timer != 0)
2330     {
2331       g_source_remove (priv->validate_rows_timer);
2332       priv->validate_rows_timer = 0;
2333     }
2334
2335   if (priv->scroll_sync_timer != 0)
2336     {
2337       g_source_remove (priv->scroll_sync_timer);
2338       priv->scroll_sync_timer = 0;
2339     }
2340
2341   if (priv->typeselect_flush_timeout)
2342     {
2343       g_source_remove (priv->typeselect_flush_timeout);
2344       priv->typeselect_flush_timeout = 0;
2345     }
2346
2347   for (list = priv->columns; list; list = list->next)
2348     _gtk_tree_view_column_unrealize_button (GTK_TREE_VIEW_COLUMN (list->data));
2349
2350   gdk_window_set_user_data (priv->bin_window, NULL);
2351   gdk_window_destroy (priv->bin_window);
2352   priv->bin_window = NULL;
2353
2354   gdk_window_set_user_data (priv->header_window, NULL);
2355   gdk_window_destroy (priv->header_window);
2356   priv->header_window = NULL;
2357
2358   if (priv->drag_window)
2359     {
2360       gdk_window_set_user_data (priv->drag_window, NULL);
2361       gdk_window_destroy (priv->drag_window);
2362       priv->drag_window = NULL;
2363     }
2364
2365   if (priv->drag_highlight_window)
2366     {
2367       gdk_window_set_user_data (priv->drag_highlight_window, NULL);
2368       gdk_window_destroy (priv->drag_highlight_window);
2369       priv->drag_highlight_window = NULL;
2370     }
2371
2372   GTK_WIDGET_CLASS (gtk_tree_view_parent_class)->unrealize (widget);
2373 }
2374
2375 /* GtkWidget::size_request helper */
2376 static void
2377 gtk_tree_view_size_request_columns (GtkTreeView *tree_view)
2378 {
2379   GList *list;
2380
2381   tree_view->priv->header_height = 0;
2382
2383   for (list = tree_view->priv->columns; list; list = list->next)
2384     {
2385       GtkRequisition     requisition;
2386       GtkTreeViewColumn *column = list->data;
2387       GtkWidget         *button = gtk_tree_view_column_get_button (column);
2388
2389       if (button == NULL)
2390         continue;
2391
2392       gtk_widget_get_preferred_size (button, &requisition, NULL);
2393       tree_view->priv->header_height = MAX (tree_view->priv->header_height, requisition.height);
2394     }
2395 }
2396
2397
2398 /* Called only by ::size_request */
2399 static void
2400 gtk_tree_view_update_size (GtkTreeView *tree_view)
2401 {
2402   GList *list;
2403   GtkTreeViewColumn *column;
2404   gint i;
2405
2406   if (tree_view->priv->model == NULL)
2407     {
2408       tree_view->priv->width = 0;
2409       tree_view->priv->prev_width = 0;
2410       tree_view->priv->height = 0;
2411       return;
2412     }
2413
2414   tree_view->priv->prev_width = tree_view->priv->width;
2415   tree_view->priv->width = 0;
2416
2417   /* keep this in sync with size_allocate below */
2418   for (list = tree_view->priv->columns, i = 0; list; list = list->next, i++)
2419     {
2420       column = list->data;
2421       if (!gtk_tree_view_column_get_visible (column))
2422         continue;
2423
2424       tree_view->priv->width += _gtk_tree_view_column_request_width (column);
2425     }
2426
2427   if (tree_view->priv->tree == NULL)
2428     tree_view->priv->height = 0;
2429   else
2430     tree_view->priv->height = tree_view->priv->tree->root->offset;
2431 }
2432
2433 static void
2434 gtk_tree_view_size_request (GtkWidget      *widget,
2435                             GtkRequisition *requisition,
2436                             gboolean        may_validate)
2437 {
2438   GtkTreeView *tree_view = GTK_TREE_VIEW (widget);
2439
2440   if (may_validate)
2441     {
2442       /* we validate some rows initially just to make sure we have some size.
2443        * In practice, with a lot of static lists, this should get a good width.
2444        */
2445       do_validate_rows (tree_view, FALSE);
2446     }
2447
2448   gtk_tree_view_size_request_columns (tree_view);
2449   gtk_tree_view_update_size (GTK_TREE_VIEW (widget));
2450
2451   requisition->width = tree_view->priv->width;
2452   requisition->height = tree_view->priv->height + gtk_tree_view_get_effective_header_height (tree_view);
2453 }
2454
2455 static void
2456 gtk_tree_view_get_preferred_width (GtkWidget *widget,
2457                                    gint      *minimum,
2458                                    gint      *natural)
2459 {
2460   GtkRequisition requisition;
2461
2462   gtk_tree_view_size_request (widget, &requisition, TRUE);
2463
2464   *minimum = *natural = requisition.width;
2465 }
2466
2467 static void
2468 gtk_tree_view_get_preferred_height (GtkWidget *widget,
2469                                     gint      *minimum,
2470                                     gint      *natural)
2471 {
2472   GtkRequisition requisition;
2473
2474   gtk_tree_view_size_request (widget, &requisition, TRUE);
2475
2476   *minimum = *natural = requisition.height;
2477 }
2478
2479 static int
2480 gtk_tree_view_calculate_width_before_expander (GtkTreeView *tree_view)
2481 {
2482   int width = 0;
2483   GList *list;
2484   gboolean rtl;
2485
2486   rtl = (gtk_widget_get_direction (GTK_WIDGET (tree_view)) == GTK_TEXT_DIR_RTL);
2487   for (list = (rtl ? g_list_last (tree_view->priv->columns) : g_list_first (tree_view->priv->columns));
2488        list->data != tree_view->priv->expander_column;
2489        list = (rtl ? list->prev : list->next))
2490     {
2491       GtkTreeViewColumn *column = list->data;
2492
2493       width += gtk_tree_view_column_get_width (column);
2494     }
2495
2496   return width;
2497 }
2498
2499 /* GtkWidget::size_allocate helper */
2500 static void
2501 gtk_tree_view_size_allocate_columns (GtkWidget *widget,
2502                                      gboolean  *width_changed)
2503 {
2504   GtkTreeView *tree_view;
2505   GList *list, *first_column, *last_column;
2506   GtkTreeViewColumn *column;
2507   GtkAllocation widget_allocation;
2508   gint width = 0;
2509   gint extra, extra_per_column, extra_for_last;
2510   gint full_requested_width = 0;
2511   gint number_of_expand_columns = 0;
2512   gboolean rtl;
2513   gboolean update_expand;
2514
2515   tree_view = GTK_TREE_VIEW (widget);
2516
2517   for (last_column = g_list_last (tree_view->priv->columns);
2518        last_column &&
2519        !(gtk_tree_view_column_get_visible (GTK_TREE_VIEW_COLUMN (last_column->data)));
2520        last_column = last_column->prev)
2521     ;
2522   if (last_column == NULL)
2523     return;
2524
2525   for (first_column = g_list_first (tree_view->priv->columns);
2526        first_column &&
2527        !(gtk_tree_view_column_get_visible (GTK_TREE_VIEW_COLUMN (first_column->data)));
2528        first_column = first_column->next)
2529     ;
2530
2531   rtl = (gtk_widget_get_direction (widget) == GTK_TEXT_DIR_RTL);
2532
2533   /* find out how many extra space and expandable columns we have */
2534   for (list = tree_view->priv->columns; list != last_column->next; list = list->next)
2535     {
2536       column = (GtkTreeViewColumn *)list->data;
2537
2538       if (!gtk_tree_view_column_get_visible (column))
2539         continue;
2540
2541       full_requested_width += _gtk_tree_view_column_request_width (column);
2542
2543       if (gtk_tree_view_column_get_expand (column))
2544         number_of_expand_columns++;
2545     }
2546
2547   /* Only update the expand value if the width of the widget has changed,
2548    * or the number of expand columns has changed, or if there are no expand
2549    * columns, or if we didn't have an size-allocation yet after the
2550    * last validated node.
2551    */
2552   update_expand = (width_changed && *width_changed == TRUE)
2553       || number_of_expand_columns != tree_view->priv->last_number_of_expand_columns
2554       || number_of_expand_columns == 0
2555       || tree_view->priv->post_validation_flag == TRUE;
2556
2557   tree_view->priv->post_validation_flag = FALSE;
2558
2559   gtk_widget_get_allocation (widget, &widget_allocation);
2560   if (!update_expand)
2561     {
2562       extra = tree_view->priv->last_extra_space;
2563       extra_for_last = MAX (widget_allocation.width - full_requested_width - extra, 0);
2564     }
2565   else
2566     {
2567       extra = MAX (widget_allocation.width - full_requested_width, 0);
2568       extra_for_last = 0;
2569
2570       tree_view->priv->last_extra_space = extra;
2571     }
2572
2573   if (number_of_expand_columns > 0)
2574     extra_per_column = extra/number_of_expand_columns;
2575   else
2576     extra_per_column = 0;
2577
2578   if (update_expand)
2579     {
2580       tree_view->priv->last_extra_space_per_column = extra_per_column;
2581       tree_view->priv->last_number_of_expand_columns = number_of_expand_columns;
2582     }
2583
2584   for (list = (rtl ? last_column : first_column);
2585        list != (rtl ? first_column->prev : last_column->next);
2586        list = (rtl ? list->prev : list->next))
2587     {
2588       gint column_width;
2589
2590       column = list->data;
2591
2592       if (!gtk_tree_view_column_get_visible (column))
2593         continue;
2594
2595       /* We need to handle the dragged button specially.
2596        */
2597       if (column == tree_view->priv->drag_column)
2598         {
2599           GtkAllocation drag_allocation;
2600           GtkWidget    *button;
2601
2602           button = gtk_tree_view_column_get_button (tree_view->priv->drag_column);
2603
2604           drag_allocation.x = 0;
2605           drag_allocation.y = 0;
2606           drag_allocation.width = gdk_window_get_width (tree_view->priv->drag_window);
2607           drag_allocation.height = gdk_window_get_height (tree_view->priv->drag_window);
2608           gtk_widget_size_allocate (button, &drag_allocation);
2609           width += drag_allocation.width;
2610           continue;
2611         }
2612
2613       column_width = _gtk_tree_view_column_request_width (column);
2614
2615       if (gtk_tree_view_column_get_expand (column))
2616         {
2617           if (number_of_expand_columns == 1)
2618             {
2619               /* We add the remander to the last column as
2620                * */
2621               column_width += extra;
2622             }
2623           else
2624             {
2625               column_width += extra_per_column;
2626               extra -= extra_per_column;
2627               number_of_expand_columns --;
2628             }
2629         }
2630       else if (number_of_expand_columns == 0 &&
2631                list == last_column)
2632         {
2633           column_width += extra;
2634         }
2635
2636       /* In addition to expand, the last column can get even more
2637        * extra space so all available space is filled up.
2638        */
2639       if (extra_for_last > 0 && list == last_column)
2640         column_width += extra_for_last;
2641
2642       _gtk_tree_view_column_allocate (column, width, column_width);
2643
2644       width += column_width;
2645     }
2646
2647   /* We change the width here.  The user might have been resizing columns,
2648    * which changes the total width of the tree view.  This is of
2649    * importance for getting the horizontal scroll bar right.
2650    */
2651   if (tree_view->priv->width != width)
2652     {
2653       tree_view->priv->width = width;
2654       if (width_changed)
2655         *width_changed = TRUE;
2656     }
2657 }
2658
2659
2660 static void
2661 gtk_tree_view_size_allocate (GtkWidget     *widget,
2662                              GtkAllocation *allocation)
2663 {
2664   GtkAllocation widget_allocation;
2665   GtkTreeView *tree_view = GTK_TREE_VIEW (widget);
2666   GList *tmp_list;
2667   gboolean width_changed = FALSE;
2668   gint old_width;
2669
2670   gtk_widget_get_allocation (widget, &widget_allocation);
2671   old_width = widget_allocation.width;
2672   if (allocation->width != widget_allocation.width)
2673     width_changed = TRUE;
2674
2675   gtk_widget_set_allocation (widget, allocation);
2676
2677   tmp_list = tree_view->priv->children;
2678
2679   while (tmp_list)
2680     {
2681       GtkAllocation allocation;
2682
2683       GtkTreeViewChild *child = tmp_list->data;
2684       tmp_list = tmp_list->next;
2685
2686       /* totally ignore our child's requisition */
2687       allocation.x = child->x;
2688       allocation.y = child->y;
2689       allocation.width = child->width;
2690       allocation.height = child->height;
2691       gtk_widget_size_allocate (child->widget, &allocation);
2692     }
2693
2694   /* We size-allocate the columns first because the width of the
2695    * tree view (used in updating the adjustments below) might change.
2696    */
2697   gtk_tree_view_size_allocate_columns (widget, &width_changed);
2698
2699   g_object_freeze_notify (G_OBJECT (tree_view->priv->hadjustment));
2700   gtk_adjustment_set_page_size (tree_view->priv->hadjustment,
2701                                 allocation->width);
2702   gtk_adjustment_set_page_increment (tree_view->priv->hadjustment,
2703                                      allocation->width * 0.9);
2704   gtk_adjustment_set_step_increment (tree_view->priv->hadjustment,
2705                                      allocation->width * 0.1);
2706   gtk_adjustment_set_lower (tree_view->priv->hadjustment, 0);
2707   gtk_adjustment_set_upper (tree_view->priv->hadjustment,
2708                             MAX (gtk_adjustment_get_page_size (tree_view->priv->hadjustment),
2709                                  tree_view->priv->width));
2710   g_object_thaw_notify (G_OBJECT (tree_view->priv->hadjustment));
2711
2712   if (gtk_widget_get_direction(widget) == GTK_TEXT_DIR_RTL)
2713     {
2714       if (allocation->width < tree_view->priv->width)
2715         {
2716           if (tree_view->priv->init_hadjust_value)
2717             {
2718               gtk_adjustment_set_value (tree_view->priv->hadjustment,
2719                                         MAX (tree_view->priv->width -
2720                                              allocation->width, 0));
2721               tree_view->priv->init_hadjust_value = FALSE;
2722             }
2723           else if (allocation->width != old_width)
2724             {
2725               gtk_adjustment_set_value (tree_view->priv->hadjustment,
2726                                         CLAMP (gtk_adjustment_get_value (tree_view->priv->hadjustment) - allocation->width + old_width,
2727                                                0,
2728                                                tree_view->priv->width - allocation->width));
2729             }
2730           else
2731             gtk_adjustment_set_value (tree_view->priv->hadjustment,
2732                                       CLAMP (tree_view->priv->width - (tree_view->priv->prev_width - gtk_adjustment_get_value (tree_view->priv->hadjustment)),
2733                                              0,
2734                                              tree_view->priv->width - allocation->width));
2735         }
2736       else
2737         {
2738           gtk_adjustment_set_value (tree_view->priv->hadjustment, 0);
2739           tree_view->priv->init_hadjust_value = TRUE;
2740         }
2741     }
2742   else
2743     if (gtk_adjustment_get_value (tree_view->priv->hadjustment) + allocation->width > tree_view->priv->width)
2744       gtk_adjustment_set_value (tree_view->priv->hadjustment,
2745                                 MAX (tree_view->priv->width -
2746                                      allocation->width, 0));
2747
2748   g_object_freeze_notify (G_OBJECT (tree_view->priv->vadjustment));
2749   gtk_adjustment_set_page_size (tree_view->priv->vadjustment,
2750                                 allocation->height -
2751                                 gtk_tree_view_get_effective_header_height (tree_view));
2752   gtk_adjustment_set_step_increment (tree_view->priv->vadjustment,
2753                                      gtk_adjustment_get_page_size (tree_view->priv->vadjustment) * 0.1);
2754   gtk_adjustment_set_page_increment (tree_view->priv->vadjustment,
2755                                      gtk_adjustment_get_page_size (tree_view->priv->vadjustment) * 0.9);
2756   gtk_adjustment_set_lower (tree_view->priv->vadjustment, 0);
2757   gtk_adjustment_set_upper (tree_view->priv->vadjustment,
2758                             MAX (gtk_adjustment_get_page_size (tree_view->priv->vadjustment),
2759                                  tree_view->priv->height));
2760   g_object_thaw_notify (G_OBJECT (tree_view->priv->vadjustment));
2761
2762   /* now the adjustments and window sizes are in sync, we can sync toprow/dy again */
2763   if (tree_view->priv->height <= gtk_adjustment_get_page_size (tree_view->priv->vadjustment))
2764     gtk_adjustment_set_value (GTK_ADJUSTMENT (tree_view->priv->vadjustment), 0);
2765   else if (gtk_adjustment_get_value (tree_view->priv->vadjustment) + gtk_adjustment_get_page_size (tree_view->priv->vadjustment) > tree_view->priv->height)
2766     gtk_adjustment_set_value (GTK_ADJUSTMENT (tree_view->priv->vadjustment),
2767                               tree_view->priv->height - gtk_adjustment_get_page_size (tree_view->priv->vadjustment));
2768   else if (gtk_tree_row_reference_valid (tree_view->priv->top_row))
2769     gtk_tree_view_top_row_to_dy (tree_view);
2770   else
2771     gtk_tree_view_dy_to_top_row (tree_view);
2772
2773   if (gtk_widget_get_realized (widget))
2774     {
2775       gdk_window_move_resize (gtk_widget_get_window (widget),
2776                               allocation->x, allocation->y,
2777                               allocation->width, allocation->height);
2778       gdk_window_move_resize (tree_view->priv->header_window,
2779                               - (gint) gtk_adjustment_get_value (tree_view->priv->hadjustment),
2780                               0,
2781                               MAX (tree_view->priv->width, allocation->width),
2782                               tree_view->priv->header_height);
2783       gdk_window_move_resize (tree_view->priv->bin_window,
2784                               - (gint) gtk_adjustment_get_value (tree_view->priv->hadjustment),
2785                               gtk_tree_view_get_effective_header_height (tree_view),
2786                               MAX (tree_view->priv->width, allocation->width),
2787                               allocation->height - gtk_tree_view_get_effective_header_height (tree_view));
2788
2789       if (tree_view->priv->tree == NULL)
2790         invalidate_empty_focus (tree_view);
2791
2792       if (width_changed && tree_view->priv->expander_column)
2793         {
2794           /* Might seem awkward, but is the best heuristic I could come up
2795            * with.  Only if the width of the columns before the expander
2796            * changes, we will update the prelight status.  It is this
2797            * width that makes the expander move vertically.  Always updating
2798            * prelight status causes trouble with hover selections.
2799            */
2800           gint width_before_expander;
2801
2802           width_before_expander = gtk_tree_view_calculate_width_before_expander (tree_view);
2803
2804           if (tree_view->priv->prev_width_before_expander
2805               != width_before_expander)
2806               update_prelight (tree_view,
2807                                tree_view->priv->event_last_x,
2808                                tree_view->priv->event_last_y);
2809
2810           tree_view->priv->prev_width_before_expander = width_before_expander;
2811         }
2812     }
2813 }
2814
2815 /* Grabs the focus and unsets the GTK_TREE_VIEW_DRAW_KEYFOCUS flag */
2816 static void
2817 grab_focus_and_unset_draw_keyfocus (GtkTreeView *tree_view)
2818 {
2819   GtkWidget *widget = GTK_WIDGET (tree_view);
2820
2821   if (gtk_widget_get_can_focus (widget) && !gtk_widget_has_focus (widget))
2822     gtk_widget_grab_focus (widget);
2823   tree_view->priv->draw_keyfocus = 0;
2824 }
2825
2826 static inline gboolean
2827 row_is_separator (GtkTreeView *tree_view,
2828                   GtkTreeIter *iter,
2829                   GtkTreePath *path)
2830 {
2831   gboolean is_separator = FALSE;
2832
2833   if (tree_view->priv->row_separator_func)
2834     {
2835       GtkTreeIter tmpiter;
2836
2837       if (iter)
2838         tmpiter = *iter;
2839       else
2840         {
2841           if (!gtk_tree_model_get_iter (tree_view->priv->model, &tmpiter, path))
2842             return FALSE;
2843         }
2844
2845       is_separator = tree_view->priv->row_separator_func (tree_view->priv->model,
2846                                                           &tmpiter,
2847                                                           tree_view->priv->row_separator_data);
2848     }
2849
2850   return is_separator;
2851 }
2852
2853 static gboolean
2854 gtk_tree_view_button_press (GtkWidget      *widget,
2855                             GdkEventButton *event)
2856 {
2857   GtkTreeView *tree_view = GTK_TREE_VIEW (widget);
2858   GList *list;
2859   GtkTreeViewColumn *column = NULL;
2860   gint i;
2861   GdkRectangle background_area;
2862   GdkRectangle cell_area;
2863   gint vertical_separator;
2864   gint horizontal_separator;
2865   gboolean path_is_selectable;
2866   gboolean rtl;
2867
2868   rtl = (gtk_widget_get_direction (widget) == GTK_TEXT_DIR_RTL);
2869   gtk_tree_view_stop_editing (tree_view, FALSE);
2870   gtk_widget_style_get (widget,
2871                         "vertical-separator", &vertical_separator,
2872                         "horizontal-separator", &horizontal_separator,
2873                         NULL);
2874
2875   /* Because grab_focus can cause reentrancy, we delay grab_focus until after
2876    * we're done handling the button press.
2877    */
2878
2879   if (event->window == tree_view->priv->bin_window)
2880     {
2881       GtkRBNode *node;
2882       GtkRBTree *tree;
2883       GtkTreePath *path;
2884       gint depth;
2885       gint new_y;
2886       gint y_offset;
2887       gint dval;
2888       gint pre_val, aft_val;
2889       GtkTreeViewColumn *column = NULL;
2890       gint column_handled_click = FALSE;
2891       gboolean row_double_click = FALSE;
2892       gboolean rtl;
2893       gboolean node_selected;
2894       GdkModifierType extend_mod_mask;
2895       GdkModifierType modify_mod_mask;
2896
2897       /* Empty tree? */
2898       if (tree_view->priv->tree == NULL)
2899         {
2900           grab_focus_and_unset_draw_keyfocus (tree_view);
2901           return TRUE;
2902         }
2903
2904       /* are we in an arrow? */
2905       if (tree_view->priv->prelight_node &&
2906           tree_view->priv->arrow_prelit &&
2907           gtk_tree_view_draw_expanders (tree_view))
2908         {
2909           if (event->button == 1)
2910             {
2911               gtk_grab_add (widget);
2912               tree_view->priv->button_pressed_node = tree_view->priv->prelight_node;
2913               tree_view->priv->button_pressed_tree = tree_view->priv->prelight_tree;
2914               gtk_tree_view_queue_draw_arrow (GTK_TREE_VIEW (widget),
2915                                               tree_view->priv->prelight_tree,
2916                                               tree_view->priv->prelight_node);
2917             }
2918
2919           grab_focus_and_unset_draw_keyfocus (tree_view);
2920           return TRUE;
2921         }
2922
2923       /* find the node that was clicked */
2924       new_y = TREE_WINDOW_Y_TO_RBTREE_Y(tree_view, event->y);
2925       if (new_y < 0)
2926         new_y = 0;
2927       y_offset = -_gtk_rbtree_find_offset (tree_view->priv->tree, new_y, &tree, &node);
2928
2929       if (node == NULL)
2930         {
2931           /* We clicked in dead space */
2932           grab_focus_and_unset_draw_keyfocus (tree_view);
2933           return TRUE;
2934         }
2935
2936       /* Get the path and the node */
2937       path = _gtk_tree_path_new_from_rbtree (tree, node);
2938       path_is_selectable = !row_is_separator (tree_view, NULL, path);
2939
2940       if (!path_is_selectable)
2941         {
2942           gtk_tree_path_free (path);
2943           grab_focus_and_unset_draw_keyfocus (tree_view);
2944           return TRUE;
2945         }
2946
2947       depth = gtk_tree_path_get_depth (path);
2948       background_area.y = y_offset + event->y;
2949       background_area.height = gtk_tree_view_get_row_height (tree_view, node);
2950       background_area.x = 0;
2951
2952
2953       /* Let the column have a chance at selecting it. */
2954       rtl = (gtk_widget_get_direction (GTK_WIDGET (tree_view)) == GTK_TEXT_DIR_RTL);
2955       for (list = (rtl ? g_list_last (tree_view->priv->columns) : g_list_first (tree_view->priv->columns));
2956            list; list = (rtl ? list->prev : list->next))
2957         {
2958           GtkTreeViewColumn *candidate = list->data;
2959
2960           if (!gtk_tree_view_column_get_visible (candidate))
2961             continue;
2962
2963           background_area.width = gtk_tree_view_column_get_width (candidate);
2964           if ((background_area.x > (gint) event->x) ||
2965               (background_area.x + background_area.width <= (gint) event->x))
2966             {
2967               background_area.x += background_area.width;
2968               continue;
2969             }
2970
2971           /* we found the focus column */
2972           column = candidate;
2973           cell_area = background_area;
2974           cell_area.width -= horizontal_separator;
2975           cell_area.height -= vertical_separator;
2976           cell_area.x += horizontal_separator/2;
2977           cell_area.y += vertical_separator/2;
2978           if (gtk_tree_view_is_expander_column (tree_view, column))
2979             {
2980               if (!rtl)
2981                 cell_area.x += (depth - 1) * tree_view->priv->level_indentation;
2982               cell_area.width -= (depth - 1) * tree_view->priv->level_indentation;
2983
2984               if (gtk_tree_view_draw_expanders (tree_view))
2985                 {
2986                   if (!rtl)
2987                     cell_area.x += depth * tree_view->priv->expander_size;
2988                   cell_area.width -= depth * tree_view->priv->expander_size;
2989                 }
2990             }
2991           break;
2992         }
2993
2994       if (column == NULL)
2995         {
2996           gtk_tree_path_free (path);
2997           grab_focus_and_unset_draw_keyfocus (tree_view);
2998           return FALSE;
2999         }
3000
3001       tree_view->priv->focus_column = column;
3002
3003       /* decide if we edit */
3004       if (event->type == GDK_BUTTON_PRESS && event->button == 1 &&
3005           !(event->state & gtk_accelerator_get_default_mod_mask ()))
3006         {
3007           GtkTreePath *anchor;
3008           GtkTreeIter iter;
3009
3010           gtk_tree_model_get_iter (tree_view->priv->model, &iter, path);
3011           gtk_tree_view_column_cell_set_cell_data (column,
3012                                                    tree_view->priv->model,
3013                                                    &iter,
3014                                                    GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_PARENT),
3015                                                    node->children?TRUE:FALSE);
3016
3017           if (tree_view->priv->anchor)
3018             anchor = gtk_tree_row_reference_get_path (tree_view->priv->anchor);
3019           else
3020             anchor = NULL;
3021
3022           if ((anchor && !gtk_tree_path_compare (anchor, path))
3023               || !_gtk_tree_view_column_has_editable_cell (column))
3024             {
3025               GtkCellEditable *cell_editable = NULL;
3026
3027               /* FIXME: get the right flags */
3028               guint flags = 0;
3029
3030               if (_gtk_tree_view_column_cell_event (column,
3031                                                     (GdkEvent *)event,
3032                                                     &cell_area, flags))
3033                 {
3034                   GtkCellArea *area = gtk_cell_layout_get_area (GTK_CELL_LAYOUT (column));
3035                   cell_editable = gtk_cell_area_get_edit_widget (area);
3036
3037                   if (cell_editable != NULL)
3038                     {
3039                       gtk_tree_path_free (path);
3040                       gtk_tree_path_free (anchor);
3041                       return TRUE;
3042                     }
3043                   column_handled_click = TRUE;
3044                 }
3045             }
3046           if (anchor)
3047             gtk_tree_path_free (anchor);
3048         }
3049
3050       extend_mod_mask =
3051         gtk_widget_get_modifier_mask (widget, GDK_MODIFIER_INTENT_EXTEND_SELECTION);
3052
3053       modify_mod_mask =
3054         gtk_widget_get_modifier_mask (widget, GDK_MODIFIER_INTENT_MODIFY_SELECTION);
3055
3056       /* select */
3057       node_selected = GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_SELECTED);
3058       pre_val = gtk_adjustment_get_value (tree_view->priv->vadjustment);
3059
3060       /* we only handle selection modifications on the first button press
3061        */
3062       if (event->type == GDK_BUTTON_PRESS)
3063         {
3064           GtkCellRenderer *focus_cell;
3065
3066           if ((event->state & modify_mod_mask) == modify_mod_mask)
3067             tree_view->priv->modify_selection_pressed = TRUE;
3068           if ((event->state & extend_mod_mask) == extend_mod_mask)
3069             tree_view->priv->extend_selection_pressed = TRUE;
3070
3071           /* We update the focus cell here, this is also needed if the
3072            * column does not contain an editable cell.  In this case,
3073            * GtkCellArea did not receive the event for processing (and
3074            * could not update the focus cell).
3075            */
3076           focus_cell = _gtk_tree_view_column_get_cell_at_pos (column,
3077                                                               &cell_area,
3078                                                               &background_area,
3079                                                               event->x,
3080                                                               event->y);
3081
3082           if (focus_cell)
3083             gtk_tree_view_column_focus_cell (column, focus_cell);
3084
3085           if (event->state & modify_mod_mask)
3086             {
3087               gtk_tree_view_real_set_cursor (tree_view, path, CLAMP_NODE);
3088               gtk_tree_view_real_toggle_cursor_row (tree_view);
3089             }
3090           else if (event->state & extend_mod_mask)
3091             {
3092               gtk_tree_view_real_set_cursor (tree_view, path, CLAMP_NODE);
3093               gtk_tree_view_real_select_cursor_row (tree_view, FALSE);
3094             }
3095           else
3096             {
3097               gtk_tree_view_real_set_cursor (tree_view, path, CLEAR_AND_SELECT | CLAMP_NODE);
3098             }
3099
3100           tree_view->priv->modify_selection_pressed = FALSE;
3101           tree_view->priv->extend_selection_pressed = FALSE;
3102         }
3103
3104       /* the treeview may have been scrolled because of _set_cursor,
3105        * correct here
3106        */
3107
3108       aft_val = gtk_adjustment_get_value (tree_view->priv->vadjustment);
3109       dval = pre_val - aft_val;
3110
3111       cell_area.y += dval;
3112       background_area.y += dval;
3113
3114       /* Save press to possibly begin a drag
3115        */
3116       if (!column_handled_click &&
3117           !tree_view->priv->in_grab &&
3118           tree_view->priv->pressed_button < 0)
3119         {
3120           tree_view->priv->pressed_button = event->button;
3121           tree_view->priv->press_start_x = event->x;
3122           tree_view->priv->press_start_y = event->y;
3123
3124           if (tree_view->priv->rubber_banding_enable
3125               && !node_selected
3126               && gtk_tree_selection_get_mode (tree_view->priv->selection) == GTK_SELECTION_MULTIPLE)
3127             {
3128               tree_view->priv->press_start_y += tree_view->priv->dy;
3129               tree_view->priv->rubber_band_x = event->x;
3130               tree_view->priv->rubber_band_y = event->y + tree_view->priv->dy;
3131               tree_view->priv->rubber_band_status = RUBBER_BAND_MAYBE_START;
3132
3133               if ((event->state & modify_mod_mask) == modify_mod_mask)
3134                 tree_view->priv->rubber_band_modify = TRUE;
3135               if ((event->state & extend_mod_mask) == extend_mod_mask)
3136                 tree_view->priv->rubber_band_extend = TRUE;
3137             }
3138         }
3139
3140       /* Test if a double click happened on the same row. */
3141       if (event->button == 1 && event->type == GDK_BUTTON_PRESS)
3142         {
3143           int double_click_time, double_click_distance;
3144
3145           g_object_get (gtk_settings_get_default (),
3146                         "gtk-double-click-time", &double_click_time,
3147                         "gtk-double-click-distance", &double_click_distance,
3148                         NULL);
3149
3150           /* Same conditions as _gdk_event_button_generate */
3151           if (tree_view->priv->last_button_x != -1 &&
3152               (event->time < tree_view->priv->last_button_time + double_click_time) &&
3153               (ABS (event->x - tree_view->priv->last_button_x) <= double_click_distance) &&
3154               (ABS (event->y - tree_view->priv->last_button_y) <= double_click_distance))
3155             {
3156               /* We do no longer compare paths of this row and the
3157                * row clicked previously.  We use the double click
3158                * distance to decide whether this is a valid click,
3159                * allowing the mouse to slightly move over another row.
3160                */
3161               row_double_click = TRUE;
3162
3163               tree_view->priv->last_button_time = 0;
3164               tree_view->priv->last_button_x = -1;
3165               tree_view->priv->last_button_y = -1;
3166             }
3167           else
3168             {
3169               tree_view->priv->last_button_time = event->time;
3170               tree_view->priv->last_button_x = event->x;
3171               tree_view->priv->last_button_y = event->y;
3172             }
3173         }
3174
3175       if (row_double_click)
3176         {
3177           gtk_grab_remove (widget);
3178           gtk_tree_view_row_activated (tree_view, path, column);
3179
3180           if (tree_view->priv->pressed_button == event->button)
3181             tree_view->priv->pressed_button = -1;
3182         }
3183
3184       gtk_tree_path_free (path);
3185
3186       /* If we activated the row through a double click we don't want to grab
3187        * focus back, as moving focus to another widget is pretty common.
3188        */
3189       if (!row_double_click)
3190         grab_focus_and_unset_draw_keyfocus (tree_view);
3191
3192       return TRUE;
3193     }
3194
3195   /* We didn't click in the window.  Let's check to see if we clicked on a column resize window.
3196    */
3197   for (i = 0, list = tree_view->priv->columns; list; list = list->next, i++)
3198     {
3199       column = list->data;
3200       if (event->window == _gtk_tree_view_column_get_window (column) &&
3201           gtk_tree_view_column_get_resizable (column) &&
3202           _gtk_tree_view_column_get_window (column))
3203         {
3204           gpointer drag_data;
3205
3206           if (event->type == GDK_2BUTTON_PRESS &&
3207               gtk_tree_view_column_get_sizing (column) != GTK_TREE_VIEW_COLUMN_AUTOSIZE)
3208             {
3209               _gtk_tree_view_column_set_use_resized_width (column, FALSE);
3210               _gtk_tree_view_column_autosize (tree_view, column);
3211               return TRUE;
3212             }
3213
3214           if (gdk_device_grab (gdk_event_get_device ((GdkEvent*)event),
3215                                _gtk_tree_view_column_get_window (column),
3216                                GDK_OWNERSHIP_NONE,
3217                                FALSE,
3218                                GDK_POINTER_MOTION_HINT_MASK
3219                                 | GDK_BUTTON1_MOTION_MASK
3220                                 | GDK_BUTTON_RELEASE_MASK,
3221                                NULL,
3222                                event->time) != GDK_GRAB_SUCCESS)
3223             return FALSE;
3224
3225           gtk_grab_add (widget);
3226           tree_view->priv->in_column_resize = TRUE;
3227
3228           _gtk_tree_view_column_set_resized_width (column, gtk_tree_view_column_get_width (column) -
3229                                                    tree_view->priv->last_extra_space_per_column);
3230
3231           /* block attached dnd signal handler */
3232           drag_data = g_object_get_data (G_OBJECT (widget), "gtk-site-data");
3233           if (drag_data)
3234             g_signal_handlers_block_matched (widget,
3235                                              G_SIGNAL_MATCH_DATA,
3236                                              0, 0, NULL, NULL,
3237                                              drag_data);
3238
3239           tree_view->priv->drag_pos = i;
3240           tree_view->priv->x_drag = gtk_tree_view_column_get_x_offset (column) + (rtl ? 0 : gtk_tree_view_column_get_width (column));
3241
3242           if (!gtk_widget_has_focus (widget))
3243             gtk_widget_grab_focus (widget);
3244
3245           return TRUE;
3246         }
3247     }
3248   return FALSE;
3249 }
3250
3251 /* GtkWidget::button_release_event helper */
3252 static gboolean
3253 gtk_tree_view_button_release_drag_column (GtkWidget      *widget,
3254                                           GdkEventButton *event)
3255 {
3256   GtkTreeView *tree_view;
3257   GtkWidget *button;
3258   GList *l;
3259   gboolean rtl;
3260   GdkDevice *device, *other;
3261
3262   tree_view = GTK_TREE_VIEW (widget);
3263
3264   rtl = (gtk_widget_get_direction (widget) == GTK_TEXT_DIR_RTL);
3265   device = gdk_event_get_device ((GdkEvent*)event);
3266   other = gdk_device_get_associated_device (device);
3267   gdk_device_ungrab (device, event->time);
3268   gdk_device_ungrab (other, event->time);
3269
3270   /* Move the button back */
3271   button = gtk_tree_view_column_get_button (tree_view->priv->drag_column);
3272   g_object_ref (button);
3273   gtk_container_remove (GTK_CONTAINER (tree_view), button);
3274   gtk_widget_set_parent_window (button, tree_view->priv->header_window);
3275   gtk_widget_set_parent (button, GTK_WIDGET (tree_view));
3276   g_object_unref (button);
3277   gtk_widget_queue_resize (widget);
3278   if (gtk_tree_view_column_get_resizable (tree_view->priv->drag_column))
3279     {
3280       gdk_window_raise (_gtk_tree_view_column_get_window (tree_view->priv->drag_column));
3281       gdk_window_show (_gtk_tree_view_column_get_window (tree_view->priv->drag_column));
3282     }
3283   else
3284     gdk_window_hide (_gtk_tree_view_column_get_window (tree_view->priv->drag_column));
3285
3286   gtk_widget_grab_focus (button);
3287
3288   if (rtl)
3289     {
3290       if (tree_view->priv->cur_reorder &&
3291           tree_view->priv->cur_reorder->right_column != tree_view->priv->drag_column)
3292         gtk_tree_view_move_column_after (tree_view, tree_view->priv->drag_column,
3293                                          tree_view->priv->cur_reorder->right_column);
3294     }
3295   else
3296     {
3297       if (tree_view->priv->cur_reorder &&
3298           tree_view->priv->cur_reorder->left_column != tree_view->priv->drag_column)
3299         gtk_tree_view_move_column_after (tree_view, tree_view->priv->drag_column,
3300                                          tree_view->priv->cur_reorder->left_column);
3301     }
3302   tree_view->priv->drag_column = NULL;
3303   gdk_window_hide (tree_view->priv->drag_window);
3304
3305   for (l = tree_view->priv->column_drag_info; l != NULL; l = l->next)
3306     g_slice_free (GtkTreeViewColumnReorder, l->data);
3307   g_list_free (tree_view->priv->column_drag_info);
3308   tree_view->priv->column_drag_info = NULL;
3309   tree_view->priv->cur_reorder = NULL;
3310
3311   if (tree_view->priv->drag_highlight_window)
3312     gdk_window_hide (tree_view->priv->drag_highlight_window);
3313
3314   /* Reset our flags */
3315   tree_view->priv->drag_column_window_state = DRAG_COLUMN_WINDOW_STATE_UNSET;
3316   tree_view->priv->in_column_drag = FALSE;
3317
3318   return TRUE;
3319 }
3320
3321 /* GtkWidget::button_release_event helper */
3322 static gboolean
3323 gtk_tree_view_button_release_column_resize (GtkWidget      *widget,
3324                                             GdkEventButton *event)
3325 {
3326   GtkTreeView *tree_view;
3327   gpointer drag_data;
3328
3329   tree_view = GTK_TREE_VIEW (widget);
3330
3331   tree_view->priv->drag_pos = -1;
3332
3333   /* unblock attached dnd signal handler */
3334   drag_data = g_object_get_data (G_OBJECT (widget), "gtk-site-data");
3335   if (drag_data)
3336     g_signal_handlers_unblock_matched (widget,
3337                                        G_SIGNAL_MATCH_DATA,
3338                                        0, 0, NULL, NULL,
3339                                        drag_data);
3340
3341   tree_view->priv->in_column_resize = FALSE;
3342   gtk_grab_remove (widget);
3343   gdk_device_ungrab (gdk_event_get_device ((GdkEvent*)event), event->time);
3344   return TRUE;
3345 }
3346
3347 static gboolean
3348 gtk_tree_view_button_release (GtkWidget      *widget,
3349                               GdkEventButton *event)
3350 {
3351   GtkTreeView *tree_view = GTK_TREE_VIEW (widget);
3352
3353   if (tree_view->priv->in_column_drag)
3354     return gtk_tree_view_button_release_drag_column (widget, event);
3355
3356   if (tree_view->priv->rubber_band_status)
3357     gtk_tree_view_stop_rubber_band (tree_view);
3358
3359   if (tree_view->priv->pressed_button == event->button)
3360     tree_view->priv->pressed_button = -1;
3361
3362   if (tree_view->priv->in_column_resize)
3363     return gtk_tree_view_button_release_column_resize (widget, event);
3364
3365   if (tree_view->priv->button_pressed_node == NULL)
3366     return FALSE;
3367
3368   if (event->button == 1)
3369     {
3370       if (tree_view->priv->button_pressed_node == tree_view->priv->prelight_node &&
3371           tree_view->priv->arrow_prelit)
3372         {
3373           GtkTreePath *path = NULL;
3374
3375           path = _gtk_tree_path_new_from_rbtree (tree_view->priv->button_pressed_tree,
3376                                                  tree_view->priv->button_pressed_node);
3377           /* Actually activate the node */
3378           if (tree_view->priv->button_pressed_node->children == NULL)
3379             gtk_tree_view_real_expand_row (tree_view, path,
3380                                            tree_view->priv->button_pressed_tree,
3381                                            tree_view->priv->button_pressed_node,
3382                                            FALSE, TRUE);
3383           else
3384             gtk_tree_view_real_collapse_row (GTK_TREE_VIEW (widget), path,
3385                                              tree_view->priv->button_pressed_tree,
3386                                              tree_view->priv->button_pressed_node, TRUE);
3387           gtk_tree_path_free (path);
3388         }
3389
3390       gtk_grab_remove (widget);
3391       tree_view->priv->button_pressed_tree = NULL;
3392       tree_view->priv->button_pressed_node = NULL;
3393     }
3394
3395   return TRUE;
3396 }
3397
3398 static gboolean
3399 gtk_tree_view_grab_broken (GtkWidget          *widget,
3400                            GdkEventGrabBroken *event)
3401 {
3402   GtkTreeView *tree_view = GTK_TREE_VIEW (widget);
3403
3404   if (tree_view->priv->in_column_drag)
3405     gtk_tree_view_button_release_drag_column (widget, (GdkEventButton *)event);
3406
3407   if (tree_view->priv->in_column_resize)
3408     gtk_tree_view_button_release_column_resize (widget, (GdkEventButton *)event);
3409
3410   return TRUE;
3411 }
3412
3413 #if 0
3414 static gboolean
3415 gtk_tree_view_configure (GtkWidget *widget,
3416                          GdkEventConfigure *event)
3417 {
3418   GtkTreeView *tree_view;
3419
3420   tree_view = GTK_TREE_VIEW (widget);
3421   tree_view->priv->search_position_func (tree_view, tree_view->priv->search_window);
3422
3423   return FALSE;
3424 }
3425 #endif
3426
3427 /* GtkWidget::motion_event function set.
3428  */
3429
3430 static gboolean
3431 coords_are_over_arrow (GtkTreeView *tree_view,
3432                        GtkRBTree   *tree,
3433                        GtkRBNode   *node,
3434                        /* these are in bin window coords */
3435                        gint         x,
3436                        gint         y)
3437 {
3438   GdkRectangle arrow;
3439   gint x2;
3440
3441   if (!gtk_widget_get_realized (GTK_WIDGET (tree_view)))
3442     return FALSE;
3443
3444   if ((node->flags & GTK_RBNODE_IS_PARENT) == 0)
3445     return FALSE;
3446
3447   arrow.y = gtk_tree_view_get_row_y_offset (tree_view, tree, node);
3448   arrow.height = gtk_tree_view_get_row_height (tree_view, node);
3449
3450   gtk_tree_view_get_arrow_xrange (tree_view, tree, &arrow.x, &x2);
3451
3452   arrow.width = x2 - arrow.x;
3453
3454   return (x >= arrow.x &&
3455           x < (arrow.x + arrow.width) &&
3456           y >= arrow.y &&
3457           y < (arrow.y + arrow.height));
3458 }
3459
3460 static gboolean
3461 auto_expand_timeout (gpointer data)
3462 {
3463   GtkTreeView *tree_view = GTK_TREE_VIEW (data);
3464   GtkTreePath *path;
3465
3466   if (tree_view->priv->prelight_node)
3467     {
3468       path = _gtk_tree_path_new_from_rbtree (tree_view->priv->prelight_tree,
3469                                              tree_view->priv->prelight_node);
3470
3471       if (tree_view->priv->prelight_node->children)
3472         gtk_tree_view_collapse_row (tree_view, path);
3473       else
3474         gtk_tree_view_expand_row (tree_view, path, FALSE);
3475
3476       gtk_tree_path_free (path);
3477     }
3478
3479   tree_view->priv->auto_expand_timeout = 0;
3480
3481   return FALSE;
3482 }
3483
3484 static void
3485 remove_auto_expand_timeout (GtkTreeView *tree_view)
3486 {
3487   if (tree_view->priv->auto_expand_timeout != 0)
3488     {
3489       g_source_remove (tree_view->priv->auto_expand_timeout);
3490       tree_view->priv->auto_expand_timeout = 0;
3491     }
3492 }
3493
3494 static void
3495 do_prelight (GtkTreeView *tree_view,
3496              GtkRBTree   *tree,
3497              GtkRBNode   *node,
3498              /* these are in bin_window coords */
3499              gint         x,
3500              gint         y)
3501 {
3502   if (tree_view->priv->prelight_tree == tree &&
3503       tree_view->priv->prelight_node == node)
3504     {
3505       /*  We are still on the same node,
3506           but we might need to take care of the arrow  */
3507
3508       if (tree && node && gtk_tree_view_draw_expanders (tree_view))
3509         {
3510           gboolean over_arrow;
3511
3512           over_arrow = coords_are_over_arrow (tree_view, tree, node, x, y);
3513
3514           if (over_arrow != tree_view->priv->arrow_prelit)
3515             {
3516               if (over_arrow)
3517                 tree_view->priv->arrow_prelit = TRUE;
3518               else
3519                 tree_view->priv->arrow_prelit = FALSE;
3520
3521               gtk_tree_view_queue_draw_arrow (tree_view, tree, node);
3522             }
3523         }
3524
3525       return;
3526     }
3527
3528   if (tree_view->priv->prelight_tree && tree_view->priv->prelight_node)
3529     {
3530       /*  Unprelight the old node and arrow  */
3531
3532       GTK_RBNODE_UNSET_FLAG (tree_view->priv->prelight_node,
3533                              GTK_RBNODE_IS_PRELIT);
3534
3535       if (tree_view->priv->arrow_prelit
3536           && gtk_tree_view_draw_expanders (tree_view))
3537         {
3538           tree_view->priv->arrow_prelit = FALSE;
3539
3540           gtk_tree_view_queue_draw_arrow (tree_view,
3541                                           tree_view->priv->prelight_tree,
3542                                           tree_view->priv->prelight_node);
3543         }
3544
3545       _gtk_tree_view_queue_draw_node (tree_view,
3546                                       tree_view->priv->prelight_tree,
3547                                       tree_view->priv->prelight_node,
3548                                       NULL);
3549     }
3550
3551
3552   if (tree_view->priv->hover_expand)
3553     remove_auto_expand_timeout (tree_view);
3554
3555   /*  Set the new prelight values  */
3556   tree_view->priv->prelight_node = node;
3557   tree_view->priv->prelight_tree = tree;
3558
3559   if (!node || !tree)
3560     return;
3561
3562   /*  Prelight the new node and arrow  */
3563
3564   if (gtk_tree_view_draw_expanders (tree_view)
3565       && coords_are_over_arrow (tree_view, tree, node, x, y))
3566     {
3567       tree_view->priv->arrow_prelit = TRUE;
3568
3569       gtk_tree_view_queue_draw_arrow (tree_view, tree, node);
3570     }
3571
3572   GTK_RBNODE_SET_FLAG (node, GTK_RBNODE_IS_PRELIT);
3573
3574   _gtk_tree_view_queue_draw_node (tree_view, tree, node, NULL);
3575
3576   if (tree_view->priv->hover_expand)
3577     {
3578       tree_view->priv->auto_expand_timeout =
3579         gdk_threads_add_timeout (AUTO_EXPAND_TIMEOUT, auto_expand_timeout, tree_view);
3580     }
3581 }
3582
3583 static void
3584 prelight_or_select (GtkTreeView *tree_view,
3585                     GtkRBTree   *tree,
3586                     GtkRBNode   *node,
3587                     /* these are in bin_window coords */
3588                     gint         x,
3589                     gint         y)
3590 {
3591   GtkSelectionMode mode = gtk_tree_selection_get_mode (tree_view->priv->selection);
3592
3593   if (tree_view->priv->hover_selection &&
3594       (mode == GTK_SELECTION_SINGLE || mode == GTK_SELECTION_BROWSE) &&
3595       !(tree_view->priv->edited_column &&
3596         gtk_cell_area_get_edit_widget
3597         (gtk_cell_layout_get_area (GTK_CELL_LAYOUT (tree_view->priv->edited_column)))))
3598     {
3599       if (node)
3600         {
3601           if (!GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_SELECTED))
3602             {
3603               GtkTreePath *path;
3604
3605               path = _gtk_tree_path_new_from_rbtree (tree, node);
3606               gtk_tree_selection_select_path (tree_view->priv->selection, path);
3607               if (GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_SELECTED))
3608                 {
3609                   tree_view->priv->draw_keyfocus = FALSE;
3610                   gtk_tree_view_real_set_cursor (tree_view, path, 0);
3611                 }
3612               gtk_tree_path_free (path);
3613             }
3614         }
3615
3616       else if (mode == GTK_SELECTION_SINGLE)
3617         gtk_tree_selection_unselect_all (tree_view->priv->selection);
3618     }
3619
3620     do_prelight (tree_view, tree, node, x, y);
3621 }
3622
3623 static void
3624 ensure_unprelighted (GtkTreeView *tree_view)
3625 {
3626   do_prelight (tree_view,
3627                NULL, NULL,
3628                -1000, -1000); /* coords not possibly over an arrow */
3629
3630   g_assert (tree_view->priv->prelight_node == NULL);
3631 }
3632
3633 static void
3634 update_prelight (GtkTreeView *tree_view,
3635                  gint         x,
3636                  gint         y)
3637 {
3638   int new_y;
3639   GtkRBTree *tree;
3640   GtkRBNode *node;
3641
3642   if (tree_view->priv->tree == NULL)
3643     return;
3644
3645   if (x == -10000)
3646     {
3647       ensure_unprelighted (tree_view);
3648       return;
3649     }
3650
3651   new_y = TREE_WINDOW_Y_TO_RBTREE_Y (tree_view, y);
3652   if (new_y < 0)
3653     new_y = 0;
3654
3655   _gtk_rbtree_find_offset (tree_view->priv->tree,
3656                            new_y, &tree, &node);
3657
3658   if (node)
3659     prelight_or_select (tree_view, tree, node, x, y);
3660 }
3661
3662
3663
3664
3665 /* Our motion arrow is either a box (in the case of the original spot)
3666  * or an arrow.  It is expander_size wide.
3667  */
3668 /*
3669  * 11111111111111
3670  * 01111111111110
3671  * 00111111111100
3672  * 00011111111000
3673  * 00001111110000
3674  * 00000111100000
3675  * 00000111100000
3676  * 00000111100000
3677  * ~ ~ ~ ~ ~ ~ ~
3678  * 00000111100000
3679  * 00000111100000
3680  * 00000111100000
3681  * 00001111110000
3682  * 00011111111000
3683  * 00111111111100
3684  * 01111111111110
3685  * 11111111111111
3686  */
3687
3688 static void
3689 gtk_tree_view_motion_draw_column_motion_arrow (GtkTreeView *tree_view)
3690 {
3691   GtkTreeViewColumnReorder *reorder = tree_view->priv->cur_reorder;
3692   GtkWidget *widget = GTK_WIDGET (tree_view);
3693   cairo_surface_t *mask_image;
3694   cairo_region_t *mask_region;
3695   gint x;
3696   gint y;
3697   gint width;
3698   gint height;
3699   gint arrow_type = DRAG_COLUMN_WINDOW_STATE_UNSET;
3700   GdkWindowAttr attributes;
3701   guint attributes_mask;
3702   cairo_t *cr;
3703
3704   if (!reorder ||
3705       reorder->left_column == tree_view->priv->drag_column ||
3706       reorder->right_column == tree_view->priv->drag_column)
3707     arrow_type = DRAG_COLUMN_WINDOW_STATE_ORIGINAL;
3708   else if (reorder->left_column || reorder->right_column)
3709     {
3710       GtkAllocation left_allocation, right_allocation;
3711       GdkRectangle visible_rect;
3712       GtkWidget *button;
3713
3714       gtk_tree_view_get_visible_rect (tree_view, &visible_rect);
3715       if (reorder->left_column)
3716         {
3717           button = gtk_tree_view_column_get_button (reorder->left_column);
3718           gtk_widget_get_allocation (button, &left_allocation);
3719           x = left_allocation.x + left_allocation.width;
3720         }
3721       else
3722         {
3723           button = gtk_tree_view_column_get_button (reorder->right_column);
3724           gtk_widget_get_allocation (button, &right_allocation);
3725           x = right_allocation.x;
3726         }
3727
3728       if (x < visible_rect.x)
3729         arrow_type = DRAG_COLUMN_WINDOW_STATE_ARROW_LEFT;
3730       else if (x > visible_rect.x + visible_rect.width)
3731         arrow_type = DRAG_COLUMN_WINDOW_STATE_ARROW_RIGHT;
3732       else
3733         arrow_type = DRAG_COLUMN_WINDOW_STATE_ARROW;
3734     }
3735
3736   /* We want to draw the rectangle over the initial location. */
3737   if (arrow_type == DRAG_COLUMN_WINDOW_STATE_ORIGINAL)
3738     {
3739       if (tree_view->priv->drag_column_window_state != DRAG_COLUMN_WINDOW_STATE_ORIGINAL)
3740         {
3741           GtkAllocation drag_allocation;
3742           GtkWidget    *button;
3743
3744           if (tree_view->priv->drag_highlight_window)
3745             {
3746               gdk_window_set_user_data (tree_view->priv->drag_highlight_window,
3747                                         NULL);
3748               gdk_window_destroy (tree_view->priv->drag_highlight_window);
3749             }
3750
3751           button = gtk_tree_view_column_get_button (tree_view->priv->drag_column);
3752           attributes.window_type = GDK_WINDOW_CHILD;
3753           attributes.wclass = GDK_INPUT_OUTPUT;
3754           attributes.x = tree_view->priv->drag_column_x;
3755           attributes.y = 0;
3756           gtk_widget_get_allocation (button, &drag_allocation);
3757           width = attributes.width = drag_allocation.width;
3758           height = attributes.height = drag_allocation.height;
3759           attributes.visual = gtk_widget_get_visual (GTK_WIDGET (tree_view));
3760           attributes.event_mask = GDK_VISIBILITY_NOTIFY_MASK | GDK_EXPOSURE_MASK | GDK_POINTER_MOTION_MASK;
3761           attributes_mask = GDK_WA_X | GDK_WA_Y | GDK_WA_VISUAL;
3762           tree_view->priv->drag_highlight_window = gdk_window_new (tree_view->priv->header_window, &attributes, attributes_mask);
3763           gdk_window_set_user_data (tree_view->priv->drag_highlight_window, GTK_WIDGET (tree_view));
3764
3765           mask_image = cairo_image_surface_create (CAIRO_FORMAT_A1, width, height);
3766           cr = cairo_create (mask_image);
3767
3768           cairo_rectangle (cr, 1, 1, width - 2, height - 2);
3769           cairo_stroke (cr);
3770           cairo_destroy (cr);
3771
3772           mask_region = gdk_cairo_region_create_from_surface (mask_image);
3773           gdk_window_shape_combine_region (tree_view->priv->drag_highlight_window,
3774                                            mask_region, 0, 0);
3775
3776           cairo_region_destroy (mask_region);
3777           cairo_surface_destroy (mask_image);
3778
3779           tree_view->priv->drag_column_window_state = DRAG_COLUMN_WINDOW_STATE_ORIGINAL;
3780         }
3781     }
3782   else if (arrow_type == DRAG_COLUMN_WINDOW_STATE_ARROW)
3783     {
3784       GtkAllocation button_allocation;
3785       GtkWidget    *button;
3786
3787       width = tree_view->priv->expander_size;
3788
3789       /* Get x, y, width, height of arrow */
3790       gdk_window_get_origin (tree_view->priv->header_window, &x, &y);
3791       if (reorder->left_column)
3792         {
3793           button = gtk_tree_view_column_get_button (reorder->left_column);
3794           gtk_widget_get_allocation (button, &button_allocation);
3795           x += button_allocation.x + button_allocation.width - width/2;
3796           height = button_allocation.height;
3797         }
3798       else
3799         {
3800           button = gtk_tree_view_column_get_button (reorder->right_column);
3801           gtk_widget_get_allocation (button, &button_allocation);
3802           x += button_allocation.x - width/2;
3803           height = button_allocation.height;
3804         }
3805       y -= tree_view->priv->expander_size/2; /* The arrow takes up only half the space */
3806       height += tree_view->priv->expander_size;
3807
3808       /* Create the new window */
3809       if (tree_view->priv->drag_column_window_state != DRAG_COLUMN_WINDOW_STATE_ARROW)
3810         {
3811           if (tree_view->priv->drag_highlight_window)
3812             {
3813               gdk_window_set_user_data (tree_view->priv->drag_highlight_window,
3814                                         NULL);
3815               gdk_window_destroy (tree_view->priv->drag_highlight_window);
3816             }
3817
3818           attributes.window_type = GDK_WINDOW_TEMP;
3819           attributes.wclass = GDK_INPUT_OUTPUT;
3820           attributes.visual = gtk_widget_get_visual (GTK_WIDGET (tree_view));
3821           attributes.event_mask = GDK_VISIBILITY_NOTIFY_MASK | GDK_EXPOSURE_MASK | GDK_POINTER_MOTION_MASK;
3822           attributes_mask = GDK_WA_X | GDK_WA_Y | GDK_WA_VISUAL;
3823           attributes.x = x;
3824           attributes.y = y;
3825           attributes.width = width;
3826           attributes.height = height;
3827           tree_view->priv->drag_highlight_window = gdk_window_new (gtk_widget_get_root_window (widget),
3828                                                                    &attributes, attributes_mask);
3829           gdk_window_set_user_data (tree_view->priv->drag_highlight_window, GTK_WIDGET (tree_view));
3830
3831           mask_image = cairo_image_surface_create (CAIRO_FORMAT_A1, width, height);
3832
3833           cr = cairo_create (mask_image);
3834           cairo_move_to (cr, 0, 0);
3835           cairo_line_to (cr, width, 0);
3836           cairo_line_to (cr, width / 2., width / 2);
3837           cairo_move_to (cr, 0, height);
3838           cairo_line_to (cr, width, height);
3839           cairo_line_to (cr, width / 2., height - width / 2.);
3840           cairo_fill (cr);
3841           cairo_destroy (cr);
3842
3843           mask_region = gdk_cairo_region_create_from_surface (mask_image);
3844           gdk_window_shape_combine_region (tree_view->priv->drag_highlight_window,
3845                                            mask_region, 0, 0);
3846
3847           cairo_region_destroy (mask_region);
3848           cairo_surface_destroy (mask_image);
3849         }
3850
3851       tree_view->priv->drag_column_window_state = DRAG_COLUMN_WINDOW_STATE_ARROW;
3852       gdk_window_move (tree_view->priv->drag_highlight_window, x, y);
3853     }
3854   else if (arrow_type == DRAG_COLUMN_WINDOW_STATE_ARROW_LEFT ||
3855            arrow_type == DRAG_COLUMN_WINDOW_STATE_ARROW_RIGHT)
3856     {
3857       GtkAllocation allocation;
3858       GtkWidget    *button;
3859
3860       width = tree_view->priv->expander_size;
3861
3862       /* Get x, y, width, height of arrow */
3863       width = width/2; /* remember, the arrow only takes half the available width */
3864       gdk_window_get_origin (gtk_widget_get_window (widget),
3865                              &x, &y);
3866       if (arrow_type == DRAG_COLUMN_WINDOW_STATE_ARROW_RIGHT)
3867         {
3868           gtk_widget_get_allocation (widget, &allocation);
3869           x += allocation.width - width;
3870         }
3871
3872       if (reorder->left_column)
3873         {
3874           button = gtk_tree_view_column_get_button (reorder->left_column);
3875           gtk_widget_get_allocation (button, &allocation);
3876           height = allocation.height;
3877         }
3878       else
3879         {
3880           button = gtk_tree_view_column_get_button (reorder->right_column);
3881           gtk_widget_get_allocation (button, &allocation);
3882           height = allocation.height;
3883         }
3884
3885       y -= tree_view->priv->expander_size;
3886       height += 2*tree_view->priv->expander_size;
3887
3888       /* Create the new window */
3889       if (tree_view->priv->drag_column_window_state != DRAG_COLUMN_WINDOW_STATE_ARROW_LEFT &&
3890           tree_view->priv->drag_column_window_state != DRAG_COLUMN_WINDOW_STATE_ARROW_RIGHT)
3891         {
3892           if (tree_view->priv->drag_highlight_window)
3893             {
3894               gdk_window_set_user_data (tree_view->priv->drag_highlight_window,
3895                                         NULL);
3896               gdk_window_destroy (tree_view->priv->drag_highlight_window);
3897             }
3898
3899           attributes.window_type = GDK_WINDOW_TEMP;
3900           attributes.wclass = GDK_INPUT_OUTPUT;
3901           attributes.visual = gtk_widget_get_visual (GTK_WIDGET (tree_view));
3902           attributes.event_mask = GDK_VISIBILITY_NOTIFY_MASK | GDK_EXPOSURE_MASK | GDK_POINTER_MOTION_MASK;
3903           attributes_mask = GDK_WA_X | GDK_WA_Y | GDK_WA_VISUAL;
3904           attributes.x = x;
3905           attributes.y = y;
3906           attributes.width = width;
3907           attributes.height = height;
3908           tree_view->priv->drag_highlight_window = gdk_window_new (NULL, &attributes, attributes_mask);
3909           gdk_window_set_user_data (tree_view->priv->drag_highlight_window, GTK_WIDGET (tree_view));
3910
3911           mask_image = cairo_image_surface_create (CAIRO_FORMAT_A1, width, height);
3912
3913           cr = cairo_create (mask_image);
3914           /* mirror if we're on the left */
3915           if (arrow_type == DRAG_COLUMN_WINDOW_STATE_ARROW_LEFT)
3916             {
3917               cairo_translate (cr, width, 0);
3918               cairo_scale (cr, -1, 1);
3919             }
3920           cairo_move_to (cr, 0, 0);
3921           cairo_line_to (cr, width, width);
3922           cairo_line_to (cr, 0, tree_view->priv->expander_size);
3923           cairo_move_to (cr, 0, height);
3924           cairo_line_to (cr, width, height - width);
3925           cairo_line_to (cr, 0, height - tree_view->priv->expander_size);
3926           cairo_fill (cr);
3927           cairo_destroy (cr);
3928
3929           mask_region = gdk_cairo_region_create_from_surface (mask_image);
3930           gdk_window_shape_combine_region (tree_view->priv->drag_highlight_window,
3931                                            mask_region, 0, 0);
3932
3933           cairo_region_destroy (mask_region);
3934           cairo_surface_destroy (mask_image);
3935         }
3936
3937       tree_view->priv->drag_column_window_state = arrow_type;
3938       gdk_window_move (tree_view->priv->drag_highlight_window, x, y);
3939    }
3940   else
3941     {
3942       g_warning (G_STRLOC"Invalid GtkTreeViewColumnReorder struct");
3943       gdk_window_hide (tree_view->priv->drag_highlight_window);
3944       return;
3945     }
3946
3947   gdk_window_show (tree_view->priv->drag_highlight_window);
3948   gdk_window_raise (tree_view->priv->drag_highlight_window);
3949 }
3950
3951 static gboolean
3952 gtk_tree_view_motion_resize_column (GtkWidget      *widget,
3953                                     GdkEventMotion *event)
3954 {
3955   gint x;
3956   gint new_width;
3957   GtkTreeViewColumn *column;
3958   GtkTreeView *tree_view = GTK_TREE_VIEW (widget);
3959
3960   column = gtk_tree_view_get_column (tree_view, tree_view->priv->drag_pos);
3961
3962   if (event->is_hint || event->window != gtk_widget_get_window (widget))
3963     gdk_window_get_device_position (gtk_widget_get_window (widget),
3964                                     gdk_event_get_device ((GdkEvent *) event),
3965                                     &x, NULL, NULL);
3966   else
3967     x = event->x;
3968
3969   if (tree_view->priv->hadjustment)
3970     x += gtk_adjustment_get_value (tree_view->priv->hadjustment);
3971
3972   new_width = gtk_tree_view_new_column_width (tree_view,
3973                                               tree_view->priv->drag_pos, &x);
3974   if (x != tree_view->priv->x_drag &&
3975       (new_width != gtk_tree_view_column_get_fixed_width (column)))
3976     {
3977       _gtk_tree_view_column_set_use_resized_width (column, TRUE);
3978
3979       if (gtk_tree_view_column_get_expand (column))
3980         new_width -= tree_view->priv->last_extra_space_per_column;
3981
3982       _gtk_tree_view_column_set_resized_width (column, new_width);
3983
3984
3985       gtk_widget_queue_resize (widget);
3986     }
3987
3988   return FALSE;
3989 }
3990
3991
3992 static void
3993 gtk_tree_view_update_current_reorder (GtkTreeView *tree_view,
3994                                       GdkEvent    *event)
3995 {
3996   GtkTreeViewColumnReorder *reorder = NULL;
3997   GList *list;
3998   gint mouse_x;
3999
4000   gdk_window_get_device_position (tree_view->priv->header_window,
4001                                   gdk_event_get_device (event),
4002                                   &mouse_x, NULL, NULL);
4003   for (list = tree_view->priv->column_drag_info; list; list = list->next)
4004     {
4005       reorder = (GtkTreeViewColumnReorder *) list->data;
4006       if (mouse_x >= reorder->left_align && mouse_x < reorder->right_align)
4007         break;
4008       reorder = NULL;
4009     }
4010
4011   /*  if (reorder && reorder == tree_view->priv->cur_reorder)
4012       return;*/
4013
4014   tree_view->priv->cur_reorder = reorder;
4015   gtk_tree_view_motion_draw_column_motion_arrow (tree_view);
4016 }
4017
4018 static void
4019 gtk_tree_view_vertical_autoscroll (GtkTreeView *tree_view)
4020 {
4021   GdkRectangle visible_rect;
4022   gint y;
4023   gint offset;
4024
4025   gdk_window_get_device_position (tree_view->priv->bin_window,
4026                                   gdk_device_manager_get_client_pointer (
4027                                     gdk_display_get_device_manager (
4028                                       gtk_widget_get_display (GTK_WIDGET (tree_view)))),
4029                                   NULL, &y, NULL);
4030   y += tree_view->priv->dy;
4031
4032   gtk_tree_view_get_visible_rect (tree_view, &visible_rect);
4033
4034   /* see if we are near the edge. */
4035   offset = y - (visible_rect.y + 2 * SCROLL_EDGE_SIZE);
4036   if (offset > 0)
4037     {
4038       offset = y - (visible_rect.y + visible_rect.height - 2 * SCROLL_EDGE_SIZE);
4039       if (offset < 0)
4040         return;
4041     }
4042
4043   gtk_adjustment_set_value (tree_view->priv->vadjustment,
4044                             MAX (gtk_adjustment_get_value (tree_view->priv->vadjustment) + offset, 0.0));
4045 }
4046
4047 static gboolean
4048 gtk_tree_view_horizontal_autoscroll (GtkTreeView *tree_view,
4049                                      GdkEvent    *event)
4050 {
4051   GdkRectangle visible_rect;
4052   gint x;
4053   gint offset;
4054
4055   gdk_window_get_device_position (tree_view->priv->bin_window,
4056                                   gdk_event_get_device (event),
4057                                   &x, NULL, NULL);
4058
4059   gtk_tree_view_get_visible_rect (tree_view, &visible_rect);
4060
4061   /* See if we are near the edge. */
4062   offset = x - (visible_rect.x + SCROLL_EDGE_SIZE);
4063   if (offset > 0)
4064     {
4065       offset = x - (visible_rect.x + visible_rect.width - SCROLL_EDGE_SIZE);
4066       if (offset < 0)
4067         return TRUE;
4068     }
4069   offset = offset/3;
4070
4071   gtk_adjustment_set_value (tree_view->priv->hadjustment,
4072                             MAX (gtk_adjustment_get_value (tree_view->priv->hadjustment) + offset, 0.0));
4073
4074   return TRUE;
4075
4076 }
4077
4078 static gboolean
4079 gtk_tree_view_motion_drag_column (GtkWidget      *widget,
4080                                   GdkEventMotion *event)
4081 {
4082   GtkAllocation allocation, button_allocation;
4083   GtkTreeView *tree_view = (GtkTreeView *) widget;
4084   GtkTreeViewColumn *column = tree_view->priv->drag_column;
4085   GtkWidget *button;
4086   gint x, y;
4087
4088   /* Sanity Check */
4089   if ((column == NULL) ||
4090       (event->window != tree_view->priv->drag_window))
4091     return FALSE;
4092
4093   button = gtk_tree_view_column_get_button (column);
4094
4095   /* Handle moving the header */
4096   gdk_window_get_position (tree_view->priv->drag_window, &x, &y);
4097   gtk_widget_get_allocation (widget, &allocation);
4098   gtk_widget_get_allocation (button, &button_allocation);
4099   x = CLAMP (x + (gint)event->x - _gtk_tree_view_column_get_drag_x (column), 0,
4100              MAX (tree_view->priv->width, allocation.width) - button_allocation.width);
4101   gdk_window_move (tree_view->priv->drag_window, x, y);
4102
4103   /* autoscroll, if needed */
4104   gtk_tree_view_horizontal_autoscroll (tree_view, (GdkEvent *) event);
4105   /* Update the current reorder position and arrow; */
4106   gtk_tree_view_update_current_reorder (tree_view, (GdkEvent *) event);
4107
4108   return TRUE;
4109 }
4110
4111 static void
4112 gtk_tree_view_stop_rubber_band (GtkTreeView *tree_view)
4113 {
4114   remove_scroll_timeout (tree_view);
4115   gtk_grab_remove (GTK_WIDGET (tree_view));
4116
4117   if (tree_view->priv->rubber_band_status == RUBBER_BAND_ACTIVE)
4118     {
4119       GtkTreePath *tmp_path;
4120
4121       gtk_widget_queue_draw (GTK_WIDGET (tree_view));
4122
4123       /* The anchor path should be set to the start path */
4124       tmp_path = _gtk_tree_path_new_from_rbtree (tree_view->priv->rubber_band_start_tree,
4125                                                  tree_view->priv->rubber_band_start_node);
4126
4127       if (tree_view->priv->anchor)
4128         gtk_tree_row_reference_free (tree_view->priv->anchor);
4129
4130       tree_view->priv->anchor =
4131         gtk_tree_row_reference_new_proxy (G_OBJECT (tree_view),
4132                                           tree_view->priv->model,
4133                                           tmp_path);
4134
4135       gtk_tree_path_free (tmp_path);
4136
4137       /* ... and the cursor to the end path */
4138       tmp_path = _gtk_tree_path_new_from_rbtree (tree_view->priv->rubber_band_end_tree,
4139                                                  tree_view->priv->rubber_band_end_node);
4140       gtk_tree_view_real_set_cursor (GTK_TREE_VIEW (tree_view), tmp_path, 0);
4141       gtk_tree_path_free (tmp_path);
4142
4143       _gtk_tree_selection_emit_changed (tree_view->priv->selection);
4144     }
4145
4146   /* Clear status variables */
4147   tree_view->priv->rubber_band_status = RUBBER_BAND_OFF;
4148   tree_view->priv->rubber_band_extend = FALSE;
4149   tree_view->priv->rubber_band_modify = FALSE;
4150
4151   tree_view->priv->rubber_band_start_node = NULL;
4152   tree_view->priv->rubber_band_start_tree = NULL;
4153   tree_view->priv->rubber_band_end_node = NULL;
4154   tree_view->priv->rubber_band_end_tree = NULL;
4155 }
4156
4157 static void
4158 gtk_tree_view_update_rubber_band_selection_range (GtkTreeView *tree_view,
4159                                                  GtkRBTree   *start_tree,
4160                                                  GtkRBNode   *start_node,
4161                                                  GtkRBTree   *end_tree,
4162                                                  GtkRBNode   *end_node,
4163                                                  gboolean     select,
4164                                                  gboolean     skip_start,
4165                                                  gboolean     skip_end)
4166 {
4167   if (start_node == end_node)
4168     return;
4169
4170   /* We skip the first node and jump inside the loop */
4171   if (skip_start)
4172     goto skip_first;
4173
4174   do
4175     {
4176       /* Small optimization by assuming insensitive nodes are never
4177        * selected.
4178        */
4179       if (!GTK_RBNODE_FLAG_SET (start_node, GTK_RBNODE_IS_SELECTED))
4180         {
4181           GtkTreePath *path;
4182           gboolean selectable;
4183
4184           path = _gtk_tree_path_new_from_rbtree (start_tree, start_node);
4185           selectable = _gtk_tree_selection_row_is_selectable (tree_view->priv->selection, start_node, path);
4186           gtk_tree_path_free (path);
4187
4188           if (!selectable)
4189             goto node_not_selectable;
4190         }
4191
4192       if (select)
4193         {
4194           if (tree_view->priv->rubber_band_extend)
4195             GTK_RBNODE_SET_FLAG (start_node, GTK_RBNODE_IS_SELECTED);
4196           else if (tree_view->priv->rubber_band_modify)
4197             {
4198               /* Toggle the selection state */
4199               if (GTK_RBNODE_FLAG_SET (start_node, GTK_RBNODE_IS_SELECTED))
4200                 GTK_RBNODE_UNSET_FLAG (start_node, GTK_RBNODE_IS_SELECTED);
4201               else
4202                 GTK_RBNODE_SET_FLAG (start_node, GTK_RBNODE_IS_SELECTED);
4203             }
4204           else
4205             GTK_RBNODE_SET_FLAG (start_node, GTK_RBNODE_IS_SELECTED);
4206         }
4207       else
4208         {
4209           /* Mirror the above */
4210           if (tree_view->priv->rubber_band_extend)
4211             GTK_RBNODE_UNSET_FLAG (start_node, GTK_RBNODE_IS_SELECTED);
4212           else if (tree_view->priv->rubber_band_modify)
4213             {
4214               /* Toggle the selection state */
4215               if (GTK_RBNODE_FLAG_SET (start_node, GTK_RBNODE_IS_SELECTED))
4216                 GTK_RBNODE_UNSET_FLAG (start_node, GTK_RBNODE_IS_SELECTED);
4217               else
4218                 GTK_RBNODE_SET_FLAG (start_node, GTK_RBNODE_IS_SELECTED);
4219             }
4220           else
4221             GTK_RBNODE_UNSET_FLAG (start_node, GTK_RBNODE_IS_SELECTED);
4222         }
4223
4224       _gtk_tree_view_queue_draw_node (tree_view, start_tree, start_node, NULL);
4225
4226 node_not_selectable:
4227       if (start_node == end_node)
4228         break;
4229
4230 skip_first:
4231
4232       if (start_node->children)
4233         {
4234           start_tree = start_node->children;
4235           start_node = _gtk_rbtree_first (start_tree);
4236         }
4237       else
4238         {
4239           _gtk_rbtree_next_full (start_tree, start_node, &start_tree, &start_node);
4240
4241           if (!start_tree)
4242             /* Ran out of tree */
4243             break;
4244         }
4245
4246       if (skip_end && start_node == end_node)
4247         break;
4248     }
4249   while (TRUE);
4250 }
4251
4252 static void
4253 gtk_tree_view_update_rubber_band_selection (GtkTreeView *tree_view)
4254 {
4255   GtkRBTree *start_tree, *end_tree;
4256   GtkRBNode *start_node, *end_node;
4257
4258   _gtk_rbtree_find_offset (tree_view->priv->tree, MIN (tree_view->priv->press_start_y, tree_view->priv->rubber_band_y), &start_tree, &start_node);
4259   _gtk_rbtree_find_offset (tree_view->priv->tree, MAX (tree_view->priv->press_start_y, tree_view->priv->rubber_band_y), &end_tree, &end_node);
4260
4261   /* Handle the start area first */
4262   if (!tree_view->priv->rubber_band_start_node)
4263     {
4264       gtk_tree_view_update_rubber_band_selection_range (tree_view,
4265                                                        start_tree,
4266                                                        start_node,
4267                                                        end_tree,
4268                                                        end_node,
4269                                                        TRUE,
4270                                                        FALSE,
4271                                                        FALSE);
4272     }
4273   else if (_gtk_rbtree_node_find_offset (start_tree, start_node) <
4274            _gtk_rbtree_node_find_offset (tree_view->priv->rubber_band_start_tree, tree_view->priv->rubber_band_start_node))
4275     {
4276       /* New node is above the old one; selection became bigger */
4277       gtk_tree_view_update_rubber_band_selection_range (tree_view,
4278                                                        start_tree,
4279                                                        start_node,
4280                                                        tree_view->priv->rubber_band_start_tree,
4281                                                        tree_view->priv->rubber_band_start_node,
4282                                                        TRUE,
4283                                                        FALSE,
4284                                                        TRUE);
4285     }
4286   else if (_gtk_rbtree_node_find_offset (start_tree, start_node) >
4287            _gtk_rbtree_node_find_offset (tree_view->priv->rubber_band_start_tree, tree_view->priv->rubber_band_start_node))
4288     {
4289       /* New node is below the old one; selection became smaller */
4290       gtk_tree_view_update_rubber_band_selection_range (tree_view,
4291                                                        tree_view->priv->rubber_band_start_tree,
4292                                                        tree_view->priv->rubber_band_start_node,
4293                                                        start_tree,
4294                                                        start_node,
4295                                                        FALSE,
4296                                                        FALSE,
4297                                                        TRUE);
4298     }
4299
4300   tree_view->priv->rubber_band_start_tree = start_tree;
4301   tree_view->priv->rubber_band_start_node = start_node;
4302
4303   /* Next, handle the end area */
4304   if (!tree_view->priv->rubber_band_end_node)
4305     {
4306       /* In the event this happens, start_node was also NULL; this case is
4307        * handled above.
4308        */
4309     }
4310   else if (!end_node)
4311     {
4312       /* Find the last node in the tree */
4313       _gtk_rbtree_find_offset (tree_view->priv->tree, tree_view->priv->height - 1,
4314                                &end_tree, &end_node);
4315
4316       /* Selection reached end of the tree */
4317       gtk_tree_view_update_rubber_band_selection_range (tree_view,
4318                                                        tree_view->priv->rubber_band_end_tree,
4319                                                        tree_view->priv->rubber_band_end_node,
4320                                                        end_tree,
4321                                                        end_node,
4322                                                        TRUE,
4323                                                        TRUE,
4324                                                        FALSE);
4325     }
4326   else if (_gtk_rbtree_node_find_offset (end_tree, end_node) >
4327            _gtk_rbtree_node_find_offset (tree_view->priv->rubber_band_end_tree, tree_view->priv->rubber_band_end_node))
4328     {
4329       /* New node is below the old one; selection became bigger */
4330       gtk_tree_view_update_rubber_band_selection_range (tree_view,
4331                                                        tree_view->priv->rubber_band_end_tree,
4332                                                        tree_view->priv->rubber_band_end_node,
4333                                                        end_tree,
4334                                                        end_node,
4335                                                        TRUE,
4336                                                        TRUE,
4337                                                        FALSE);
4338     }
4339   else if (_gtk_rbtree_node_find_offset (end_tree, end_node) <
4340            _gtk_rbtree_node_find_offset (tree_view->priv->rubber_band_end_tree, tree_view->priv->rubber_band_end_node))
4341     {
4342       /* New node is above the old one; selection became smaller */
4343       gtk_tree_view_update_rubber_band_selection_range (tree_view,
4344                                                        end_tree,
4345                                                        end_node,
4346                                                        tree_view->priv->rubber_band_end_tree,
4347                                                        tree_view->priv->rubber_band_end_node,
4348                                                        FALSE,
4349                                                        TRUE,
4350                                                        FALSE);
4351     }
4352
4353   tree_view->priv->rubber_band_end_tree = end_tree;
4354   tree_view->priv->rubber_band_end_node = end_node;
4355 }
4356
4357 static void
4358 gtk_tree_view_update_rubber_band (GtkTreeView *tree_view)
4359 {
4360   gint x, y;
4361   GdkRectangle old_area;
4362   GdkRectangle new_area;
4363   GdkRectangle common;
4364   cairo_region_t *invalid_region;
4365
4366   old_area.x = MIN (tree_view->priv->press_start_x, tree_view->priv->rubber_band_x);
4367   old_area.y = MIN (tree_view->priv->press_start_y, tree_view->priv->rubber_band_y) - tree_view->priv->dy;
4368   old_area.width = ABS (tree_view->priv->rubber_band_x - tree_view->priv->press_start_x) + 1;
4369   old_area.height = ABS (tree_view->priv->rubber_band_y - tree_view->priv->press_start_y) + 1;
4370
4371   gdk_window_get_device_position (tree_view->priv->bin_window,
4372                                   gdk_device_manager_get_client_pointer (
4373                                     gdk_display_get_device_manager (
4374                                       gtk_widget_get_display (GTK_WIDGET (tree_view)))),
4375                                   &x, &y, NULL);
4376
4377   x = MAX (x, 0);
4378   y = MAX (y, 0) + tree_view->priv->dy;
4379
4380   new_area.x = MIN (tree_view->priv->press_start_x, x);
4381   new_area.y = MIN (tree_view->priv->press_start_y, y) - tree_view->priv->dy;
4382   new_area.width = ABS (x - tree_view->priv->press_start_x) + 1;
4383   new_area.height = ABS (y - tree_view->priv->press_start_y) + 1;
4384
4385   invalid_region = cairo_region_create_rectangle (&old_area);
4386   cairo_region_union_rectangle (invalid_region, &new_area);
4387
4388   gdk_rectangle_intersect (&old_area, &new_area, &common);
4389   if (common.width > 2 && common.height > 2)
4390     {
4391       cairo_region_t *common_region;
4392
4393       /* make sure the border is invalidated */
4394       common.x += 1;
4395       common.y += 1;
4396       common.width -= 2;
4397       common.height -= 2;
4398
4399       common_region = cairo_region_create_rectangle (&common);
4400
4401       cairo_region_subtract (invalid_region, common_region);
4402       cairo_region_destroy (common_region);
4403     }
4404
4405   gdk_window_invalidate_region (tree_view->priv->bin_window, invalid_region, TRUE);
4406
4407   cairo_region_destroy (invalid_region);
4408
4409   tree_view->priv->rubber_band_x = x;
4410   tree_view->priv->rubber_band_y = y;
4411
4412   gtk_tree_view_update_rubber_band_selection (tree_view);
4413 }
4414
4415 static void
4416 gtk_tree_view_paint_rubber_band (GtkTreeView  *tree_view,
4417                                  cairo_t      *cr)
4418 {
4419   GdkRectangle rect;
4420   GtkStyleContext *context;
4421
4422   cairo_save (cr);
4423
4424   context = gtk_widget_get_style_context (GTK_WIDGET (tree_view));
4425
4426   gtk_style_context_save (context);
4427   gtk_style_context_add_class (context, GTK_STYLE_CLASS_RUBBERBAND);
4428
4429   rect.x = MIN (tree_view->priv->press_start_x, tree_view->priv->rubber_band_x);
4430   rect.y = MIN (tree_view->priv->press_start_y, tree_view->priv->rubber_band_y) - tree_view->priv->dy;
4431   rect.width = ABS (tree_view->priv->press_start_x - tree_view->priv->rubber_band_x) + 1;
4432   rect.height = ABS (tree_view->priv->press_start_y - tree_view->priv->rubber_band_y) + 1;
4433
4434   gdk_cairo_rectangle (cr, &rect);
4435   cairo_clip (cr);
4436
4437   gtk_render_background (context, cr,
4438                          rect.x, rect.y,
4439                          rect.width, rect.height);
4440   gtk_render_frame (context, cr,
4441                     rect.x, rect.y,
4442                     rect.width, rect.height);
4443
4444   gtk_style_context_restore (context);
4445   cairo_restore (cr);
4446 }
4447
4448 static gboolean
4449 gtk_tree_view_motion_bin_window (GtkWidget      *widget,
4450                                  GdkEventMotion *event)
4451 {
4452   GtkTreeView *tree_view;
4453   GtkRBTree *tree;
4454   GtkRBNode *node;
4455   gint new_y;
4456
4457   tree_view = (GtkTreeView *) widget;
4458
4459   if (tree_view->priv->tree == NULL)
4460     return FALSE;
4461
4462   if (tree_view->priv->rubber_band_status == RUBBER_BAND_MAYBE_START)
4463     {
4464       gtk_grab_add (GTK_WIDGET (tree_view));
4465       gtk_tree_view_update_rubber_band (tree_view);
4466
4467       tree_view->priv->rubber_band_status = RUBBER_BAND_ACTIVE;
4468     }
4469   else if (tree_view->priv->rubber_band_status == RUBBER_BAND_ACTIVE)
4470     {
4471       gtk_tree_view_update_rubber_band (tree_view);
4472
4473       add_scroll_timeout (tree_view);
4474     }
4475
4476   /* only check for an initiated drag when a button is pressed */
4477   if (tree_view->priv->pressed_button >= 0
4478       && !tree_view->priv->rubber_band_status)
4479     gtk_tree_view_maybe_begin_dragging_row (tree_view, event);
4480
4481   new_y = TREE_WINDOW_Y_TO_RBTREE_Y(tree_view, event->y);
4482   if (new_y < 0)
4483     new_y = 0;
4484
4485   _gtk_rbtree_find_offset (tree_view->priv->tree, new_y, &tree, &node);
4486
4487   /* If we are currently pressing down a button, we don't want to prelight anything else. */
4488   if ((tree_view->priv->button_pressed_node != NULL) &&
4489       (tree_view->priv->button_pressed_node != node))
4490     node = NULL;
4491
4492   tree_view->priv->event_last_x = event->x;
4493   tree_view->priv->event_last_y = event->y;
4494
4495   prelight_or_select (tree_view, tree, node, event->x, event->y);
4496
4497   return TRUE;
4498 }
4499
4500 static gboolean
4501 gtk_tree_view_motion (GtkWidget      *widget,
4502                       GdkEventMotion *event)
4503 {
4504   GtkTreeView *tree_view;
4505
4506   tree_view = (GtkTreeView *) widget;
4507
4508   /* Resizing a column */
4509   if (tree_view->priv->in_column_resize)
4510     return gtk_tree_view_motion_resize_column (widget, event);
4511
4512   /* Drag column */
4513   if (tree_view->priv->in_column_drag)
4514     return gtk_tree_view_motion_drag_column (widget, event);
4515
4516   /* Sanity check it */
4517   if (event->window == tree_view->priv->bin_window)
4518     return gtk_tree_view_motion_bin_window (widget, event);
4519
4520   return FALSE;
4521 }
4522
4523 /* Invalidate the focus rectangle near the edge of the bin_window; used when
4524  * the tree is empty.
4525  */
4526 static void
4527 invalidate_empty_focus (GtkTreeView *tree_view)
4528 {
4529   GdkRectangle area;
4530
4531   if (!gtk_widget_has_focus (GTK_WIDGET (tree_view)))
4532     return;
4533
4534   area.x = 0;
4535   area.y = 0;
4536   area.width = gdk_window_get_width (tree_view->priv->bin_window);
4537   area.height = gdk_window_get_height (tree_view->priv->bin_window);
4538   gdk_window_invalidate_rect (tree_view->priv->bin_window, &area, FALSE);
4539 }
4540
4541 /* Draws a focus rectangle near the edge of the bin_window; used when the tree
4542  * is empty.
4543  */
4544 static void
4545 draw_empty_focus (GtkTreeView *tree_view, cairo_t *cr)
4546 {
4547   GtkWidget *widget = GTK_WIDGET (tree_view);
4548   gint w, h;
4549
4550   if (!gtk_widget_has_visible_focus (widget))
4551     return;
4552
4553   w = gdk_window_get_width (tree_view->priv->bin_window) - 2;
4554   h = gdk_window_get_height (tree_view->priv->bin_window) - 2;
4555
4556   if (w > 0 && h > 0)
4557     {
4558       GtkStyleContext *context;
4559       GtkStateFlags state;
4560
4561       context = gtk_widget_get_style_context (widget);
4562       state = gtk_widget_get_state_flags (widget);
4563
4564       gtk_style_context_save (context);
4565       gtk_style_context_set_state (context, state);
4566
4567       gtk_render_focus (context, cr, 1, 1, w, h);
4568
4569       gtk_style_context_restore (context);
4570     }
4571 }
4572
4573 typedef enum {
4574   GTK_TREE_VIEW_GRID_LINE,
4575   GTK_TREE_VIEW_TREE_LINE,
4576   GTK_TREE_VIEW_FOREGROUND_LINE
4577 } GtkTreeViewLineType;
4578
4579 static void
4580 gtk_tree_view_draw_line (GtkTreeView         *tree_view,
4581                          cairo_t             *cr,
4582                          GtkTreeViewLineType  type,
4583                          int                  x1,
4584                          int                  y1,
4585                          int                  x2,
4586                          int                  y2)
4587 {
4588   cairo_save (cr);
4589
4590   switch (type)
4591     {
4592     case GTK_TREE_VIEW_TREE_LINE:
4593       cairo_set_source_rgb (cr, 0, 0, 0);
4594       cairo_set_line_width (cr, tree_view->priv->tree_line_width);
4595       if (tree_view->priv->tree_line_dashes[0])
4596         cairo_set_dash (cr,
4597                         tree_view->priv->tree_line_dashes,
4598                         2, 0.5);
4599       break;
4600     case GTK_TREE_VIEW_GRID_LINE:
4601       cairo_set_source_rgb (cr, 0, 0, 0);
4602       cairo_set_line_width (cr, tree_view->priv->grid_line_width);
4603       if (tree_view->priv->grid_line_dashes[0])
4604         cairo_set_dash (cr,
4605                         tree_view->priv->grid_line_dashes,
4606                         2, 0.5);
4607       break;
4608     default:
4609       g_assert_not_reached ();
4610       /* fall through */
4611     case GTK_TREE_VIEW_FOREGROUND_LINE:
4612       {
4613         GtkStyleContext *context;
4614         GtkStateFlags state;
4615         GdkRGBA color;
4616
4617         context = gtk_widget_get_style_context (GTK_WIDGET (tree_view));
4618         state = gtk_widget_get_state_flags (GTK_WIDGET (tree_view));
4619
4620         cairo_set_line_width (cr, 1.0);
4621         gtk_style_context_get_color (context, state, &color);
4622         gdk_cairo_set_source_rgba (cr, &color);
4623       }
4624
4625       break;
4626     }
4627
4628   cairo_move_to (cr, x1 + 0.5, y1 + 0.5);
4629   cairo_line_to (cr, x2 + 0.5, y2 + 0.5);
4630   cairo_stroke (cr);
4631
4632   cairo_restore (cr);
4633 }
4634
4635 static void
4636 gtk_tree_view_draw_grid_lines (GtkTreeView    *tree_view,
4637                                cairo_t        *cr,
4638                                gint            n_visible_columns)
4639 {
4640   GList *list = tree_view->priv->columns;
4641   gint i = 0;
4642   gint current_x = 0;
4643
4644   if (tree_view->priv->grid_lines != GTK_TREE_VIEW_GRID_LINES_VERTICAL
4645       && tree_view->priv->grid_lines != GTK_TREE_VIEW_GRID_LINES_BOTH)
4646     return;
4647
4648   /* Only draw the lines for visible rows and columns */
4649   for (list = tree_view->priv->columns; list; list = list->next, i++)
4650     {
4651       GtkTreeViewColumn *column = list->data;
4652
4653       /* We don't want a line for the last column */
4654       if (i == n_visible_columns - 1)
4655         break;
4656
4657       if (!gtk_tree_view_column_get_visible (column))
4658         continue;
4659
4660       current_x += gtk_tree_view_column_get_width (column);
4661
4662       gtk_tree_view_draw_line (tree_view, cr,
4663                                GTK_TREE_VIEW_GRID_LINE,
4664                                current_x - 1, 0,
4665                                current_x - 1, tree_view->priv->height);
4666     }
4667 }
4668
4669 /* Warning: Very scary function.
4670  * Modify at your own risk
4671  *
4672  * KEEP IN SYNC WITH gtk_tree_view_create_row_drag_icon()!
4673  * FIXME: It's not...
4674  */
4675 static gboolean
4676 gtk_tree_view_bin_draw (GtkWidget      *widget,
4677                         cairo_t        *cr)
4678 {
4679   GtkTreeView *tree_view = GTK_TREE_VIEW (widget);
4680   GtkTreePath *path;
4681   GtkRBTree *tree;
4682   GList *list;
4683   GtkRBNode *node;
4684   GtkRBNode *drag_highlight = NULL;
4685   GtkRBTree *drag_highlight_tree = NULL;
4686   GtkTreeIter iter;
4687   gint new_y;
4688   gint y_offset, cell_offset;
4689   gint max_height;
4690   gint depth;
4691   GdkRectangle background_area;
4692   GdkRectangle cell_area;
4693   GdkRectangle clip;
4694   guint flags;
4695   gint highlight_x;
4696   gint expander_cell_width;
4697   gint bin_window_width;
4698   gint bin_window_height;
4699   GtkTreePath *drag_dest_path;
4700   GList *first_column, *last_column;
4701   gint vertical_separator;
4702   gint horizontal_separator;
4703   gint focus_line_width;
4704   gboolean allow_rules;
4705   gboolean has_can_focus_cell;
4706   gboolean rtl;
4707   gint n_visible_columns;
4708   gint grid_line_width;
4709   gboolean draw_vgrid_lines, draw_hgrid_lines;
4710   GtkStyleContext *context;
4711   GtkStateFlags state;
4712   gboolean parity;
4713
4714   rtl = (gtk_widget_get_direction (widget) == GTK_TEXT_DIR_RTL);
4715   context = gtk_widget_get_style_context (widget);
4716   state = gtk_widget_get_state_flags (widget);
4717
4718   gtk_widget_style_get (widget,
4719                         "horizontal-separator", &horizontal_separator,
4720                         "vertical-separator", &vertical_separator,
4721                         "allow-rules", &allow_rules,
4722                         "focus-line-width", &focus_line_width,
4723                         NULL);
4724
4725   if (tree_view->priv->tree == NULL)
4726     {
4727       draw_empty_focus (tree_view, cr);
4728       return TRUE;
4729     }
4730
4731   bin_window_width = gdk_window_get_width (tree_view->priv->bin_window);
4732   bin_window_height = gdk_window_get_height (tree_view->priv->bin_window);
4733   cairo_rectangle (cr, 0, 0, bin_window_width, bin_window_height);
4734   cairo_clip (cr);
4735   if (!gdk_cairo_get_clip_rectangle (cr, &clip))
4736     return TRUE;
4737
4738   new_y = TREE_WINDOW_Y_TO_RBTREE_Y (tree_view, clip.y);
4739
4740   if (new_y < 0)
4741     new_y = 0;
4742   y_offset = -_gtk_rbtree_find_offset (tree_view->priv->tree, new_y, &tree, &node);
4743
4744   if (tree_view->priv->height < bin_window_height)
4745     {
4746       gtk_style_context_save (context);
4747       gtk_style_context_set_state (context, state);
4748       gtk_style_context_add_class (context, GTK_STYLE_CLASS_CELL);
4749
4750       gtk_render_background (context, cr,
4751                              0, tree_view->priv->height,
4752                              bin_window_width,
4753                              bin_window_height - tree_view->priv->height);
4754
4755       gtk_style_context_restore (context);
4756     }
4757
4758   if (node == NULL)
4759     return TRUE;
4760
4761   /* find the path for the node */
4762   path = _gtk_tree_path_new_from_rbtree (tree, node);
4763   gtk_tree_model_get_iter (tree_view->priv->model,
4764                            &iter,
4765                            path);
4766   depth = gtk_tree_path_get_depth (path);
4767   gtk_tree_path_free (path);
4768
4769   drag_dest_path = NULL;
4770
4771   if (tree_view->priv->drag_dest_row)
4772     drag_dest_path = gtk_tree_row_reference_get_path (tree_view->priv->drag_dest_row);
4773
4774   if (drag_dest_path)
4775     _gtk_tree_view_find_node (tree_view, drag_dest_path,
4776                               &drag_highlight_tree, &drag_highlight);
4777
4778   draw_vgrid_lines =
4779     tree_view->priv->grid_lines == GTK_TREE_VIEW_GRID_LINES_VERTICAL
4780     || tree_view->priv->grid_lines == GTK_TREE_VIEW_GRID_LINES_BOTH;
4781   draw_hgrid_lines =
4782     tree_view->priv->grid_lines == GTK_TREE_VIEW_GRID_LINES_HORIZONTAL
4783     || tree_view->priv->grid_lines == GTK_TREE_VIEW_GRID_LINES_BOTH;
4784
4785   if (draw_vgrid_lines || draw_hgrid_lines)
4786     gtk_widget_style_get (widget, "grid-line-width", &grid_line_width, NULL);
4787
4788   n_visible_columns = 0;
4789   for (list = tree_view->priv->columns; list; list = list->next)
4790     {
4791       if (!gtk_tree_view_column_get_visible (GTK_TREE_VIEW_COLUMN (list->data)))
4792         continue;
4793       n_visible_columns ++;
4794     }
4795
4796   /* Find the last column */
4797   for (last_column = g_list_last (tree_view->priv->columns);
4798        last_column &&
4799        !(gtk_tree_view_column_get_visible (GTK_TREE_VIEW_COLUMN (last_column->data)));
4800        last_column = last_column->prev)
4801     ;
4802
4803   /* and the first */
4804   for (first_column = g_list_first (tree_view->priv->columns);
4805        first_column &&
4806        !(gtk_tree_view_column_get_visible (GTK_TREE_VIEW_COLUMN (first_column->data)));
4807        first_column = first_column->next)
4808     ;
4809
4810   /* Actually process the expose event.  To do this, we want to
4811    * start at the first node of the event, and walk the tree in
4812    * order, drawing each successive node.
4813    */
4814
4815   parity = !(_gtk_rbtree_node_get_index (tree, node) % 2);
4816
4817   do
4818     {
4819       gboolean is_separator = FALSE;
4820       gboolean is_first = FALSE;
4821       gboolean is_last = FALSE;
4822       gint n_col = 0;
4823
4824       parity = !parity;
4825       is_separator = row_is_separator (tree_view, &iter, NULL);
4826
4827       max_height = gtk_tree_view_get_row_height (tree_view, node);
4828
4829       cell_offset = 0;
4830       highlight_x = 0; /* should match x coord of first cell */
4831       expander_cell_width = 0;
4832
4833       background_area.y = y_offset + clip.y;
4834       background_area.height = max_height;
4835
4836       flags = 0;
4837
4838       if (GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_PRELIT))
4839         flags |= GTK_CELL_RENDERER_PRELIT;
4840
4841       if (GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_SELECTED))
4842         flags |= GTK_CELL_RENDERER_SELECTED;
4843
4844       /* we *need* to set cell data on all cells before the call
4845        * to _has_can_focus_cell, else _has_can_focus_cell() does not
4846        * return a correct value.
4847        */
4848       for (list = (rtl ? g_list_last (tree_view->priv->columns) : g_list_first (tree_view->priv->columns));
4849            list;
4850            list = (rtl ? list->prev : list->next))
4851         {
4852           GtkTreeViewColumn *column = list->data;
4853           gtk_tree_view_column_cell_set_cell_data (column,
4854                                                    tree_view->priv->model,
4855                                                    &iter,
4856                                                    GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_PARENT),
4857                                                    node->children?TRUE:FALSE);
4858         }
4859
4860       has_can_focus_cell = gtk_tree_view_has_can_focus_cell (tree_view);
4861
4862       for (list = (rtl ? g_list_last (tree_view->priv->columns) : g_list_first (tree_view->priv->columns));
4863            list;
4864            list = (rtl ? list->prev : list->next))
4865         {
4866           GtkTreeViewColumn *column = list->data;
4867           GtkRegionFlags row_flags = 0, column_flags = 0;
4868           GtkStateFlags state = 0;
4869           gint width;
4870           gboolean draw_focus;
4871
4872           if (!gtk_tree_view_column_get_visible (column))
4873             continue;
4874
4875           n_col++;
4876           width = gtk_tree_view_column_get_width (column);
4877
4878           if (cell_offset > clip.x + clip.width ||
4879               cell_offset + width < clip.x)
4880             {
4881               cell_offset += width;
4882               continue;
4883             }
4884
4885           if (gtk_tree_view_column_get_sort_indicator (column))
4886             flags |= GTK_CELL_RENDERER_SORTED;
4887           else
4888             flags &= ~GTK_CELL_RENDERER_SORTED;
4889
4890           if (tree_view->priv->cursor_node == node)
4891             flags |= GTK_CELL_RENDERER_FOCUSED;
4892           else
4893             flags &= ~GTK_CELL_RENDERER_FOCUSED;
4894
4895           if (GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_PARENT))
4896             flags |= GTK_CELL_RENDERER_EXPANDABLE;
4897           else
4898             flags &= ~GTK_CELL_RENDERER_EXPANDABLE;
4899
4900           if (node->children)
4901             flags |= GTK_CELL_RENDERER_EXPANDED;
4902           else
4903             flags &= ~GTK_CELL_RENDERER_EXPANDED;
4904
4905           background_area.x = cell_offset;
4906           background_area.width = width;
4907
4908           cell_area = background_area;
4909           cell_area.y += vertical_separator / 2;
4910           cell_area.x += horizontal_separator / 2;
4911           cell_area.height -= vertical_separator;
4912           cell_area.width -= horizontal_separator;
4913
4914           if (draw_vgrid_lines)
4915             {
4916               if (list == first_column)
4917                 {
4918                   cell_area.width -= grid_line_width / 2;
4919                 }
4920               else if (list == last_column)
4921                 {
4922                   cell_area.x += grid_line_width / 2;
4923                   cell_area.width -= grid_line_width / 2;
4924                 }
4925               else
4926                 {
4927                   cell_area.x += grid_line_width / 2;
4928                   cell_area.width -= grid_line_width;
4929                 }
4930             }
4931
4932           if (draw_hgrid_lines)
4933             {
4934               cell_area.y += grid_line_width / 2;
4935               cell_area.height -= grid_line_width;
4936             }
4937
4938           if (!gdk_rectangle_intersect (&clip, &background_area, NULL))
4939             {
4940               cell_offset += gtk_tree_view_column_get_width (column);
4941               continue;
4942             }
4943
4944           gtk_tree_view_column_cell_set_cell_data (column,
4945                                                    tree_view->priv->model,
4946                                                    &iter,
4947                                                    GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_PARENT),
4948                                                    node->children?TRUE:FALSE);
4949
4950           /* Select the detail for drawing the cell.  relevant
4951            * factors are parity, sortedness, and whether to
4952            * display rules.
4953            */
4954           if (allow_rules && tree_view->priv->has_rules)
4955             {
4956               if (parity)
4957                 row_flags |= GTK_REGION_ODD;
4958               else
4959                 row_flags |= GTK_REGION_EVEN;
4960             }
4961
4962           if ((flags & GTK_CELL_RENDERER_SORTED) &&
4963               n_visible_columns >= 3)
4964             column_flags |= GTK_REGION_SORTED;
4965
4966           is_first = (rtl ? !list->next : !list->prev);
4967           is_last = (rtl ? !list->prev : !list->next);
4968
4969           if (is_first)
4970             column_flags |= GTK_REGION_FIRST;
4971
4972           if (is_last)
4973             column_flags |= GTK_REGION_LAST;
4974
4975           if ((n_col % 2) == 0)
4976             column_flags |= GTK_REGION_EVEN;
4977           else
4978             column_flags |= GTK_REGION_ODD;
4979
4980           gtk_style_context_save (context);
4981
4982           state = gtk_cell_renderer_get_state (NULL, widget, flags);
4983           gtk_style_context_set_state (context, state);
4984
4985           gtk_style_context_add_class (context, GTK_STYLE_CLASS_CELL);
4986           gtk_style_context_add_region (context, GTK_STYLE_REGION_ROW, row_flags);
4987           gtk_style_context_add_region (context, GTK_STYLE_REGION_COLUMN, column_flags);
4988
4989           if (node == tree_view->priv->cursor_node && has_can_focus_cell
4990               && ((column == tree_view->priv->focus_column
4991                    && tree_view->priv->draw_keyfocus &&
4992                    gtk_widget_has_visible_focus (widget))
4993                   || (column == tree_view->priv->edited_column)))
4994             draw_focus = TRUE;
4995           else
4996             draw_focus = FALSE;
4997
4998           /* Draw background */
4999           gtk_render_background (context, cr,
5000                                  background_area.x,
5001                                  background_area.y,
5002                                  background_area.width,
5003                                  background_area.height);
5004
5005           /* Draw frame */
5006           gtk_render_frame (context, cr,
5007                             background_area.x,
5008                             background_area.y,
5009                             background_area.width,
5010                             background_area.height);
5011
5012           if (gtk_tree_view_is_expander_column (tree_view, column))
5013             {
5014               if (!rtl)
5015                 cell_area.x += (depth - 1) * tree_view->priv->level_indentation;
5016               cell_area.width -= (depth - 1) * tree_view->priv->level_indentation;
5017
5018               if (gtk_tree_view_draw_expanders (tree_view))
5019                 {
5020                   if (!rtl)
5021                     cell_area.x += depth * tree_view->priv->expander_size;
5022                   cell_area.width -= depth * tree_view->priv->expander_size;
5023                 }
5024
5025               /* If we have an expander column, the highlight underline
5026                * starts with that column, so that it indicates which
5027                * level of the tree we're dropping at.
5028                */
5029               highlight_x = cell_area.x;
5030               expander_cell_width = cell_area.width;
5031
5032               if (is_separator)
5033                 {
5034                   gtk_style_context_save (context);
5035                   gtk_style_context_add_class (context, GTK_STYLE_CLASS_SEPARATOR);
5036
5037                   gtk_render_line (context, cr,
5038                                    cell_area.x,
5039                                    cell_area.y + cell_area.height / 2,
5040                                    cell_area.x + cell_area.width,
5041                                    cell_area.y + cell_area.height / 2);
5042
5043                   gtk_style_context_restore (context);
5044                 }
5045               else
5046                 {
5047                   _gtk_tree_view_column_cell_render (column,
5048                                                      cr,
5049                                                      &background_area,
5050                                                      &cell_area,
5051                                                      flags,
5052                                                      draw_focus);
5053                 }
5054
5055               if (gtk_tree_view_draw_expanders (tree_view)
5056                   && (node->flags & GTK_RBNODE_IS_PARENT) == GTK_RBNODE_IS_PARENT)
5057                 {
5058                   gtk_tree_view_draw_arrow (GTK_TREE_VIEW (widget),
5059                                             cr,
5060                                             tree,
5061                                             node);
5062                 }
5063             }
5064           else
5065             {
5066               if (is_separator)
5067                 {
5068                   gtk_style_context_save (context);
5069                   gtk_style_context_add_class (context, GTK_STYLE_CLASS_SEPARATOR);
5070
5071                   gtk_render_line (context, cr,
5072                                    cell_area.x,
5073                                    cell_area.y + cell_area.height / 2,
5074                                    cell_area.x + cell_area.width,
5075                                    cell_area.y + cell_area.height / 2);
5076
5077                   gtk_style_context_restore (context);
5078                 }
5079               else
5080                 _gtk_tree_view_column_cell_render (column,
5081                                                    cr,
5082                                                    &background_area,
5083                                                    &cell_area,
5084                                                    flags,
5085                                                    draw_focus);
5086             }
5087
5088           if (draw_hgrid_lines)
5089             {
5090               if (background_area.y > 0)
5091                 gtk_tree_view_draw_line (tree_view, cr,
5092                                          GTK_TREE_VIEW_GRID_LINE,
5093                                          background_area.x, background_area.y,
5094                                          background_area.x + background_area.width,
5095                                          background_area.y);
5096
5097               if (y_offset + max_height >= clip.height)
5098                 gtk_tree_view_draw_line (tree_view, cr,
5099                                          GTK_TREE_VIEW_GRID_LINE,
5100                                          background_area.x, background_area.y + max_height,
5101                                          background_area.x + background_area.width,
5102                                          background_area.y + max_height);
5103             }
5104
5105           if (gtk_tree_view_is_expander_column (tree_view, column) &&
5106               tree_view->priv->tree_lines_enabled)
5107             {
5108               gint x = background_area.x;
5109               gint mult = rtl ? -1 : 1;
5110               gint y0 = background_area.y;
5111               gint y1 = background_area.y + background_area.height/2;
5112               gint y2 = background_area.y + background_area.height;
5113
5114               if (rtl)
5115                 x += background_area.width - 1;
5116
5117               if ((node->flags & GTK_RBNODE_IS_PARENT) == GTK_RBNODE_IS_PARENT
5118                   && depth > 1)
5119                 {
5120                   gtk_tree_view_draw_line (tree_view, cr,
5121                                            GTK_TREE_VIEW_TREE_LINE,
5122                                            x + tree_view->priv->expander_size * (depth - 1.5) * mult,
5123                                            y1,
5124                                            x + tree_view->priv->expander_size * (depth - 1.1) * mult,
5125                                            y1);
5126                 }
5127               else if (depth > 1)
5128                 {
5129                   gtk_tree_view_draw_line (tree_view, cr,
5130                                            GTK_TREE_VIEW_TREE_LINE,
5131                                            x + tree_view->priv->expander_size * (depth - 1.5) * mult,
5132                                            y1,
5133                                            x + tree_view->priv->expander_size * (depth - 0.5) * mult,
5134                                            y1);
5135                 }
5136
5137               if (depth > 1)
5138                 {
5139                   gint i;
5140                   GtkRBNode *tmp_node;
5141                   GtkRBTree *tmp_tree;
5142
5143                   if (!_gtk_rbtree_next (tree, node))
5144                     gtk_tree_view_draw_line (tree_view, cr,
5145                                              GTK_TREE_VIEW_TREE_LINE,
5146                                              x + tree_view->priv->expander_size * (depth - 1.5) * mult,
5147                                              y0,
5148                                              x + tree_view->priv->expander_size * (depth - 1.5) * mult,
5149                                              y1);
5150                   else
5151                     gtk_tree_view_draw_line (tree_view, cr,
5152                                              GTK_TREE_VIEW_TREE_LINE,
5153                                              x + tree_view->priv->expander_size * (depth - 1.5) * mult,
5154                                              y0,
5155                                              x + tree_view->priv->expander_size * (depth - 1.5) * mult,
5156                                              y2);
5157
5158                   tmp_node = tree->parent_node;
5159                   tmp_tree = tree->parent_tree;
5160
5161                   for (i = depth - 2; i > 0; i--)
5162                     {
5163                       if (_gtk_rbtree_next (tmp_tree, tmp_node))
5164                         gtk_tree_view_draw_line (tree_view, cr,
5165                                                  GTK_TREE_VIEW_TREE_LINE,
5166                                                  x + tree_view->priv->expander_size * (i - 0.5) * mult,
5167                                                  y0,
5168                                                  x + tree_view->priv->expander_size * (i - 0.5) * mult,
5169                                                  y2);
5170
5171                       tmp_node = tmp_tree->parent_node;
5172                       tmp_tree = tmp_tree->parent_tree;
5173                     }
5174                 }
5175             }
5176
5177           gtk_style_context_restore (context);
5178           cell_offset += gtk_tree_view_column_get_width (column);
5179         }
5180
5181       if (node == drag_highlight)
5182         {
5183           /* Draw indicator for the drop
5184            */
5185           gint highlight_y = -1;
5186           GtkRBTree *tree = NULL;
5187           GtkRBNode *node = NULL;
5188
5189           switch (tree_view->priv->drag_dest_pos)
5190             {
5191             case GTK_TREE_VIEW_DROP_BEFORE:
5192               highlight_y = background_area.y - 1;
5193               if (highlight_y < 0)
5194                       highlight_y = 0;
5195               break;
5196
5197             case GTK_TREE_VIEW_DROP_AFTER:
5198               highlight_y = background_area.y + background_area.height - 1;
5199               break;
5200
5201             case GTK_TREE_VIEW_DROP_INTO_OR_BEFORE:
5202             case GTK_TREE_VIEW_DROP_INTO_OR_AFTER:
5203               _gtk_tree_view_find_node (tree_view, drag_dest_path, &tree, &node);
5204
5205               if (tree == NULL)
5206                 break;
5207
5208               gtk_render_focus (context, cr,
5209                                 0, gtk_tree_view_get_row_y_offset (tree_view, tree, node)
5210                                    - focus_line_width / 2,
5211                                 gdk_window_get_width (tree_view->priv->bin_window),
5212                                 gtk_tree_view_get_row_height (tree_view, node)
5213                                    - focus_line_width + 1);
5214               break;
5215             }
5216
5217           if (highlight_y >= 0)
5218             {
5219               gtk_tree_view_draw_line (tree_view, cr,
5220                                        GTK_TREE_VIEW_FOREGROUND_LINE,
5221                                        rtl ? highlight_x + expander_cell_width : highlight_x,
5222                                        highlight_y,
5223                                        rtl ? 0 : bin_window_width,
5224                                        highlight_y);
5225             }
5226         }
5227
5228       /* draw the big row-spanning focus rectangle, if needed */
5229       if (!has_can_focus_cell && node == tree_view->priv->cursor_node &&
5230           tree_view->priv->draw_keyfocus &&
5231           gtk_widget_has_visible_focus (widget))
5232         {
5233           gint tmp_y, tmp_height;
5234           GtkStateFlags focus_rect_state = 0;
5235
5236           gtk_style_context_save (context);
5237
5238           focus_rect_state = gtk_cell_renderer_get_state (NULL, widget, flags);
5239           gtk_style_context_set_state (context, focus_rect_state);
5240
5241           if (draw_hgrid_lines)
5242             {
5243               tmp_y = gtk_tree_view_get_row_y_offset (tree_view, tree, node) + grid_line_width / 2;
5244               tmp_height = gtk_tree_view_get_row_height (tree_view, node) - grid_line_width;
5245             }
5246           else
5247             {
5248               tmp_y = gtk_tree_view_get_row_y_offset (tree_view, tree, node);
5249               tmp_height = gtk_tree_view_get_row_height (tree_view, node);
5250             }
5251
5252           gtk_render_focus (context, cr,
5253                             0, tmp_y,
5254                             gdk_window_get_width (tree_view->priv->bin_window),
5255                             tmp_height);
5256
5257           gtk_style_context_restore (context);
5258         }
5259
5260       y_offset += max_height;
5261       if (node->children)
5262         {
5263           GtkTreeIter parent = iter;
5264           gboolean has_child;
5265
5266           tree = node->children;
5267           node = _gtk_rbtree_first (tree);
5268
5269           has_child = gtk_tree_model_iter_children (tree_view->priv->model,
5270                                                     &iter,
5271                                                     &parent);
5272           depth++;
5273
5274           /* Sanity Check! */
5275           TREE_VIEW_INTERNAL_ASSERT (has_child, FALSE);
5276         }
5277       else
5278         {
5279           gboolean done = FALSE;
5280
5281           do
5282             {
5283               node = _gtk_rbtree_next (tree, node);
5284               if (node != NULL)
5285                 {
5286                   gboolean has_next = gtk_tree_model_iter_next (tree_view->priv->model, &iter);
5287                   done = TRUE;
5288
5289                   /* Sanity Check! */
5290                   TREE_VIEW_INTERNAL_ASSERT (has_next, FALSE);
5291                 }
5292               else
5293                 {
5294                   GtkTreeIter parent_iter = iter;
5295                   gboolean has_parent;
5296
5297                   node = tree->parent_node;
5298                   tree = tree->parent_tree;
5299                   if (tree == NULL)
5300                     /* we should go to done to free some memory */
5301                     goto done;
5302                   has_parent = gtk_tree_model_iter_parent (tree_view->priv->model,
5303                                                            &iter,
5304                                                            &parent_iter);
5305                   depth--;
5306
5307                   /* Sanity check */
5308                   TREE_VIEW_INTERNAL_ASSERT (has_parent, FALSE);
5309                 }
5310             }
5311           while (!done);
5312         }
5313     }
5314   while (y_offset < clip.height);
5315
5316 done:
5317   gtk_tree_view_draw_grid_lines (tree_view, cr, n_visible_columns);
5318
5319   if (tree_view->priv->rubber_band_status == RUBBER_BAND_ACTIVE)
5320     gtk_tree_view_paint_rubber_band (tree_view, cr);
5321
5322   if (drag_dest_path)
5323     gtk_tree_path_free (drag_dest_path);
5324
5325   return FALSE;
5326 }
5327
5328 static gboolean
5329 gtk_tree_view_draw (GtkWidget *widget,
5330                     cairo_t   *cr)
5331 {
5332   GtkTreeView *tree_view = GTK_TREE_VIEW (widget);
5333   GtkWidget   *button;
5334
5335   if (gtk_cairo_should_draw_window (cr, tree_view->priv->bin_window))
5336     {
5337       GtkStyleContext *context;
5338       GList *tmp_list;
5339
5340       context = gtk_widget_get_style_context (widget);
5341
5342       cairo_save (cr);
5343
5344       gtk_style_context_save (context);
5345       gtk_style_context_add_class (context, GTK_STYLE_CLASS_VIEW);
5346
5347       gtk_cairo_transform_to_window (cr, widget, tree_view->priv->bin_window);
5348
5349       gtk_tree_view_bin_draw (widget, cr);
5350
5351       gtk_style_context_restore (context);
5352       cairo_restore (cr);
5353
5354       /* We can't just chain up to Container::draw as it will try to send the
5355        * event to the headers, so we handle propagating it to our children
5356        * (eg. widgets being edited) ourselves.
5357        */
5358       tmp_list = tree_view->priv->children;
5359       while (tmp_list)
5360         {
5361           GtkTreeViewChild *child = tmp_list->data;
5362           tmp_list = tmp_list->next;
5363
5364           gtk_container_propagate_draw (GTK_CONTAINER (tree_view), child->widget, cr);
5365         }
5366     }
5367
5368   if (gtk_cairo_should_draw_window (cr, tree_view->priv->header_window))
5369     {
5370       GList *list;
5371
5372       for (list = tree_view->priv->columns; list != NULL; list = list->next)
5373         {
5374           GtkTreeViewColumn *column = list->data;
5375
5376           if (column == tree_view->priv->drag_column)
5377             continue;
5378
5379           if (gtk_tree_view_column_get_visible (column))
5380             {
5381               button = gtk_tree_view_column_get_button (column);
5382               gtk_container_propagate_draw (GTK_CONTAINER (tree_view),
5383                                             button, cr);
5384             }
5385         }
5386     }
5387
5388   if (tree_view->priv->drag_window &&
5389       gtk_cairo_should_draw_window (cr, tree_view->priv->drag_window))
5390     {
5391       button = gtk_tree_view_column_get_button (tree_view->priv->drag_column);
5392       gtk_container_propagate_draw (GTK_CONTAINER (tree_view),
5393                                     button, cr);
5394     }
5395
5396   return FALSE;
5397 }
5398
5399 enum
5400 {
5401   DROP_HOME,
5402   DROP_RIGHT,
5403   DROP_LEFT,
5404   DROP_END
5405 };
5406
5407 /* returns 0x1 when no column has been found -- yes it's hackish */
5408 static GtkTreeViewColumn *
5409 gtk_tree_view_get_drop_column (GtkTreeView       *tree_view,
5410                                GtkTreeViewColumn *column,
5411                                gint               drop_position)
5412 {
5413   GtkTreeViewColumn *left_column = NULL;
5414   GtkTreeViewColumn *cur_column = NULL;
5415   GList *tmp_list;
5416
5417   if (!gtk_tree_view_column_get_reorderable (column))
5418     return (GtkTreeViewColumn *)0x1;
5419
5420   switch (drop_position)
5421     {
5422       case DROP_HOME:
5423         /* find first column where we can drop */
5424         tmp_list = tree_view->priv->columns;
5425         if (column == GTK_TREE_VIEW_COLUMN (tmp_list->data))
5426           return (GtkTreeViewColumn *)0x1;
5427
5428         while (tmp_list)
5429           {
5430             g_assert (tmp_list);
5431
5432             cur_column = GTK_TREE_VIEW_COLUMN (tmp_list->data);
5433             tmp_list = tmp_list->next;
5434
5435             if (left_column &&
5436                 gtk_tree_view_column_get_visible (left_column) == FALSE)
5437               continue;
5438
5439             if (!tree_view->priv->column_drop_func)
5440               return left_column;
5441
5442             if (!tree_view->priv->column_drop_func (tree_view, column, left_column, cur_column, tree_view->priv->column_drop_func_data))
5443               {
5444                 left_column = cur_column;
5445                 continue;
5446               }
5447
5448             return left_column;
5449           }
5450
5451         if (!tree_view->priv->column_drop_func)
5452           return left_column;
5453
5454         if (tree_view->priv->column_drop_func (tree_view, column, left_column, NULL, tree_view->priv->column_drop_func_data))
5455           return left_column;
5456         else
5457           return (GtkTreeViewColumn *)0x1;
5458         break;
5459
5460       case DROP_RIGHT:
5461         /* find first column after column where we can drop */
5462         tmp_list = tree_view->priv->columns;
5463
5464         for (; tmp_list; tmp_list = tmp_list->next)
5465           if (GTK_TREE_VIEW_COLUMN (tmp_list->data) == column)
5466             break;
5467
5468         if (!tmp_list || !tmp_list->next)
5469           return (GtkTreeViewColumn *)0x1;
5470
5471         tmp_list = tmp_list->next;
5472         left_column = GTK_TREE_VIEW_COLUMN (tmp_list->data);
5473         tmp_list = tmp_list->next;
5474
5475         while (tmp_list)
5476           {
5477             g_assert (tmp_list);
5478
5479             cur_column = GTK_TREE_VIEW_COLUMN (tmp_list->data);
5480             tmp_list = tmp_list->next;
5481
5482             if (left_column &&
5483                 gtk_tree_view_column_get_visible (left_column) == FALSE)
5484               {
5485                 left_column = cur_column;
5486                 if (tmp_list)
5487                   tmp_list = tmp_list->next;
5488                 continue;
5489               }
5490
5491             if (!tree_view->priv->column_drop_func)
5492               return left_column;
5493
5494             if (!tree_view->priv->column_drop_func (tree_view, column, left_column, cur_column, tree_view->priv->column_drop_func_data))
5495               {
5496                 left_column = cur_column;
5497                 continue;
5498               }
5499
5500             return left_column;
5501           }
5502
5503         if (!tree_view->priv->column_drop_func)
5504           return left_column;
5505
5506         if (tree_view->priv->column_drop_func (tree_view, column, left_column, NULL, tree_view->priv->column_drop_func_data))
5507           return left_column;
5508         else
5509           return (GtkTreeViewColumn *)0x1;
5510         break;
5511
5512       case DROP_LEFT:
5513         /* find first column before column where we can drop */
5514         tmp_list = tree_view->priv->columns;
5515
5516         for (; tmp_list; tmp_list = tmp_list->next)
5517           if (GTK_TREE_VIEW_COLUMN (tmp_list->data) == column)
5518             break;
5519
5520         if (!tmp_list || !tmp_list->prev)
5521           return (GtkTreeViewColumn *)0x1;
5522
5523         tmp_list = tmp_list->prev;
5524         cur_column = GTK_TREE_VIEW_COLUMN (tmp_list->data);
5525         tmp_list = tmp_list->prev;
5526
5527         while (tmp_list)
5528           {
5529             g_assert (tmp_list);
5530
5531             left_column = GTK_TREE_VIEW_COLUMN (tmp_list->data);
5532
5533             if (left_column &&
5534                 gtk_tree_view_column_get_visible (left_column) == FALSE)
5535               {
5536                 /*if (!tmp_list->prev)
5537                   return (GtkTreeViewColumn *)0x1;
5538                   */
5539 /*
5540                 cur_column = GTK_TREE_VIEW_COLUMN (tmp_list->prev->data);
5541                 tmp_list = tmp_list->prev->prev;
5542                 continue;*/
5543
5544                 cur_column = left_column;
5545                 if (tmp_list)
5546                   tmp_list = tmp_list->prev;
5547                 continue;
5548               }
5549
5550             if (!tree_view->priv->column_drop_func)
5551               return left_column;
5552
5553             if (tree_view->priv->column_drop_func (tree_view, column, left_column, cur_column, tree_view->priv->column_drop_func_data))
5554               return left_column;
5555
5556             cur_column = left_column;
5557             tmp_list = tmp_list->prev;
5558           }
5559
5560         if (!tree_view->priv->column_drop_func)
5561           return NULL;
5562
5563         if (tree_view->priv->column_drop_func (tree_view, column, NULL, cur_column, tree_view->priv->column_drop_func_data))
5564           return NULL;
5565         else
5566           return (GtkTreeViewColumn *)0x1;
5567         break;
5568
5569       case DROP_END:
5570         /* same as DROP_HOME case, but doing it backwards */
5571         tmp_list = g_list_last (tree_view->priv->columns);
5572         cur_column = NULL;
5573
5574         if (column == GTK_TREE_VIEW_COLUMN (tmp_list->data))
5575           return (GtkTreeViewColumn *)0x1;
5576
5577         while (tmp_list)
5578           {
5579             g_assert (tmp_list);
5580
5581             left_column = GTK_TREE_VIEW_COLUMN (tmp_list->data);
5582
5583             if (left_column &&
5584                 gtk_tree_view_column_get_visible (left_column) == FALSE)
5585               {
5586                 cur_column = left_column;
5587                 tmp_list = tmp_list->prev;
5588               }
5589
5590             if (!tree_view->priv->column_drop_func)
5591               return left_column;
5592
5593             if (tree_view->priv->column_drop_func (tree_view, column, left_column, cur_column, tree_view->priv->column_drop_func_data))
5594               return left_column;
5595
5596             cur_column = left_column;
5597             tmp_list = tmp_list->prev;
5598           }
5599
5600         if (!tree_view->priv->column_drop_func)
5601           return NULL;
5602
5603         if (tree_view->priv->column_drop_func (tree_view, column, NULL, cur_column, tree_view->priv->column_drop_func_data))
5604           return NULL;
5605         else
5606           return (GtkTreeViewColumn *)0x1;
5607         break;
5608     }
5609
5610   return (GtkTreeViewColumn *)0x1;
5611 }
5612
5613 static gboolean
5614 gtk_tree_view_key_press (GtkWidget   *widget,
5615                          GdkEventKey *event)
5616 {
5617   GtkTreeView *tree_view = (GtkTreeView *) widget;
5618   GtkWidget   *button;
5619
5620   if (tree_view->priv->rubber_band_status)
5621     {
5622       if (event->keyval == GDK_KEY_Escape)
5623         gtk_tree_view_stop_rubber_band (tree_view);
5624
5625       return TRUE;
5626     }
5627
5628   if (tree_view->priv->in_column_drag)
5629     {
5630       if (event->keyval == GDK_KEY_Escape)
5631         {
5632           tree_view->priv->cur_reorder = NULL;
5633           gtk_tree_view_button_release_drag_column (widget, NULL);
5634         }
5635       return TRUE;
5636     }
5637
5638   if (tree_view->priv->headers_visible)
5639     {
5640       GList *focus_column;
5641       gboolean rtl;
5642
5643       rtl = (gtk_widget_get_direction (GTK_WIDGET (tree_view)) == GTK_TEXT_DIR_RTL);
5644
5645       for (focus_column = tree_view->priv->columns;
5646            focus_column;
5647            focus_column = focus_column->next)
5648         {
5649           GtkTreeViewColumn *column = GTK_TREE_VIEW_COLUMN (focus_column->data);
5650
5651           button = gtk_tree_view_column_get_button (column);
5652           if (gtk_widget_has_focus (button))
5653             break;
5654         }
5655
5656       if (focus_column &&
5657           (event->state & GDK_SHIFT_MASK) && (event->state & GDK_MOD1_MASK) &&
5658           (event->keyval == GDK_KEY_Left || event->keyval == GDK_KEY_KP_Left
5659            || event->keyval == GDK_KEY_Right || event->keyval == GDK_KEY_KP_Right))
5660         {
5661           GtkTreeViewColumn *column = GTK_TREE_VIEW_COLUMN (focus_column->data);
5662           gint max_width, min_width;
5663
5664           if (!gtk_tree_view_column_get_resizable (column))
5665             {
5666               gtk_widget_error_bell (widget);
5667               return TRUE;
5668             }
5669
5670           if (event->keyval == (rtl ? GDK_KEY_Right : GDK_KEY_Left)
5671               || event->keyval == (rtl ? GDK_KEY_KP_Right : GDK_KEY_KP_Left))
5672             {
5673               GtkRequisition button_req;
5674               gint old_width = _gtk_tree_view_column_get_resized_width (column);
5675               gint new_width;
5676
5677               button = gtk_tree_view_column_get_button (column);
5678
5679               gtk_widget_get_preferred_size (button, &button_req, NULL);
5680
5681               new_width = MAX (old_width, gtk_tree_view_column_get_width (column));
5682               new_width -= 2;
5683               if (new_width < 0)
5684                 new_width = 0;
5685
5686               _gtk_tree_view_column_set_resized_width (column, new_width);
5687
5688               min_width = gtk_tree_view_column_get_min_width (column);
5689               if (min_width == -1)
5690                 new_width = MAX (button_req.width, new_width);
5691               else
5692                 {
5693                   new_width = MAX (min_width, new_width);
5694                 }
5695
5696               max_width = gtk_tree_view_column_get_max_width (column);
5697               if (max_width != -1)
5698                 new_width = MIN (new_width, max_width);
5699
5700               _gtk_tree_view_column_set_use_resized_width (column, TRUE);
5701
5702               if (new_width != old_width)
5703                 {
5704                   _gtk_tree_view_column_set_resized_width (column, new_width);
5705                   gtk_widget_queue_resize (widget);
5706                 }
5707               else
5708                 gtk_widget_error_bell (widget);
5709             }
5710           else if (event->keyval == (rtl ? GDK_KEY_Left : GDK_KEY_Right)
5711                    || event->keyval == (rtl ? GDK_KEY_KP_Left : GDK_KEY_KP_Right))
5712             {
5713               gint old_width = _gtk_tree_view_column_get_resized_width (column);
5714               gint new_width;
5715
5716               new_width = MAX (old_width, gtk_tree_view_column_get_width (column));
5717               new_width += 2;
5718
5719               max_width = gtk_tree_view_column_get_max_width (column);
5720               if (max_width != -1)
5721                 new_width = MIN (new_width, max_width);
5722
5723               _gtk_tree_view_column_set_use_resized_width (column, TRUE);
5724
5725               if (new_width != old_width)
5726                 {
5727                   _gtk_tree_view_column_set_resized_width (column, new_width);
5728                   gtk_widget_queue_resize (widget);
5729                 }
5730               else
5731                 gtk_widget_error_bell (widget);
5732             }
5733
5734           return TRUE;
5735         }
5736
5737       if (focus_column &&
5738           (event->state & GDK_MOD1_MASK) &&
5739           (event->keyval == GDK_KEY_Left || event->keyval == GDK_KEY_KP_Left
5740            || event->keyval == GDK_KEY_Right || event->keyval == GDK_KEY_KP_Right
5741            || event->keyval == GDK_KEY_Home || event->keyval == GDK_KEY_KP_Home
5742            || event->keyval == GDK_KEY_End || event->keyval == GDK_KEY_KP_End))
5743         {
5744           GtkTreeViewColumn *column = GTK_TREE_VIEW_COLUMN (focus_column->data);
5745
5746           if (event->keyval == (rtl ? GDK_KEY_Right : GDK_KEY_Left)
5747               || event->keyval == (rtl ? GDK_KEY_KP_Right : GDK_KEY_KP_Left))
5748             {
5749               GtkTreeViewColumn *col;
5750               col = gtk_tree_view_get_drop_column (tree_view, column, DROP_LEFT);
5751               if (col != (GtkTreeViewColumn *)0x1)
5752                 gtk_tree_view_move_column_after (tree_view, column, col);
5753               else
5754                 gtk_widget_error_bell (widget);
5755             }
5756           else if (event->keyval == (rtl ? GDK_KEY_Left : GDK_KEY_Right)
5757                    || event->keyval == (rtl ? GDK_KEY_KP_Left : GDK_KEY_KP_Right))
5758             {
5759               GtkTreeViewColumn *col;
5760               col = gtk_tree_view_get_drop_column (tree_view, column, DROP_RIGHT);
5761               if (col != (GtkTreeViewColumn *)0x1)
5762                 gtk_tree_view_move_column_after (tree_view, column, col);
5763               else
5764                 gtk_widget_error_bell (widget);
5765             }
5766           else if (event->keyval == GDK_KEY_Home || event->keyval == GDK_KEY_KP_Home)
5767             {
5768               GtkTreeViewColumn *col;
5769               col = gtk_tree_view_get_drop_column (tree_view, column, DROP_HOME);
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 == GDK_KEY_End || event->keyval == GDK_KEY_KP_End)
5776             {
5777               GtkTreeViewColumn *col;
5778               col = gtk_tree_view_get_drop_column (tree_view, column, DROP_END);
5779               if (col != (GtkTreeViewColumn *)0x1)
5780                 gtk_tree_view_move_column_after (tree_view, column, col);
5781               else
5782                 gtk_widget_error_bell (widget);
5783             }
5784
5785           return TRUE;
5786         }
5787     }
5788
5789   /* Chain up to the parent class.  It handles the keybindings. */
5790   if (GTK_WIDGET_CLASS (gtk_tree_view_parent_class)->key_press_event (widget, event))
5791     return TRUE;
5792
5793   if (tree_view->priv->search_entry_avoid_unhandled_binding)
5794     {
5795       tree_view->priv->search_entry_avoid_unhandled_binding = FALSE;
5796       return FALSE;
5797     }
5798
5799   /* We pass the event to the search_entry.  If its text changes, then we start
5800    * the typeahead find capabilities. */
5801   if (gtk_widget_has_focus (GTK_WIDGET (tree_view))
5802       && tree_view->priv->enable_search
5803       && !tree_view->priv->search_custom_entry_set)
5804     {
5805       GdkEvent *new_event;
5806       char *old_text;
5807       const char *new_text;
5808       gboolean retval;
5809       GdkScreen *screen;
5810       gboolean text_modified;
5811       gulong popup_menu_id;
5812
5813       gtk_tree_view_ensure_interactive_directory (tree_view);
5814
5815       /* Make a copy of the current text */
5816       old_text = g_strdup (gtk_entry_get_text (GTK_ENTRY (tree_view->priv->search_entry)));
5817       new_event = gdk_event_copy ((GdkEvent *) event);
5818       g_object_unref (((GdkEventKey *) new_event)->window);
5819       ((GdkEventKey *) new_event)->window = g_object_ref (gtk_widget_get_window (tree_view->priv->search_window));
5820       gtk_widget_realize (tree_view->priv->search_window);
5821
5822       popup_menu_id = g_signal_connect (tree_view->priv->search_entry,
5823                                         "popup-menu", G_CALLBACK (gtk_true),
5824                                         NULL);
5825
5826       /* Move the entry off screen */
5827       screen = gtk_widget_get_screen (GTK_WIDGET (tree_view));
5828       gtk_window_move (GTK_WINDOW (tree_view->priv->search_window),
5829                        gdk_screen_get_width (screen) + 1,
5830                        gdk_screen_get_height (screen) + 1);
5831       gtk_widget_show (tree_view->priv->search_window);
5832
5833       /* Send the event to the window.  If the preedit_changed signal is emitted
5834        * during this event, we will set priv->imcontext_changed  */
5835       tree_view->priv->imcontext_changed = FALSE;
5836       retval = gtk_widget_event (tree_view->priv->search_window, new_event);
5837       gdk_event_free (new_event);
5838       gtk_widget_hide (tree_view->priv->search_window);
5839
5840       g_signal_handler_disconnect (tree_view->priv->search_entry,
5841                                    popup_menu_id);
5842
5843       /* We check to make sure that the entry tried to handle the text, and that
5844        * the text has changed.
5845        */
5846       new_text = gtk_entry_get_text (GTK_ENTRY (tree_view->priv->search_entry));
5847       text_modified = strcmp (old_text, new_text) != 0;
5848       g_free (old_text);
5849       if (tree_view->priv->imcontext_changed ||    /* we're in a preedit */
5850           (retval && text_modified))               /* ...or the text was modified */
5851         {
5852           if (gtk_tree_view_real_start_interactive_search (tree_view,
5853                                                            gdk_event_get_device ((GdkEvent *) event),
5854                                                            FALSE))
5855             {
5856               gtk_widget_grab_focus (GTK_WIDGET (tree_view));
5857               return TRUE;
5858             }
5859           else
5860             {
5861               gtk_entry_set_text (GTK_ENTRY (tree_view->priv->search_entry), "");
5862               return FALSE;
5863             }
5864         }
5865     }
5866
5867   return FALSE;
5868 }
5869
5870 static gboolean
5871 gtk_tree_view_key_release (GtkWidget   *widget,
5872                            GdkEventKey *event)
5873 {
5874   GtkTreeView *tree_view = GTK_TREE_VIEW (widget);
5875
5876   if (tree_view->priv->rubber_band_status)
5877     return TRUE;
5878
5879   return GTK_WIDGET_CLASS (gtk_tree_view_parent_class)->key_release_event (widget, event);
5880 }
5881
5882 /* FIXME Is this function necessary? Can I get an enter_notify event
5883  * w/o either an expose event or a mouse motion event?
5884  */
5885 static gboolean
5886 gtk_tree_view_enter_notify (GtkWidget        *widget,
5887                             GdkEventCrossing *event)
5888 {
5889   GtkTreeView *tree_view = GTK_TREE_VIEW (widget);
5890   GtkRBTree *tree;
5891   GtkRBNode *node;
5892   gint new_y;
5893
5894   /* Sanity check it */
5895   if (event->window != tree_view->priv->bin_window)
5896     return FALSE;
5897
5898   if (tree_view->priv->tree == NULL)
5899     return FALSE;
5900
5901   if (event->mode == GDK_CROSSING_GRAB ||
5902       event->mode == GDK_CROSSING_GTK_GRAB ||
5903       event->mode == GDK_CROSSING_GTK_UNGRAB ||
5904       event->mode == GDK_CROSSING_STATE_CHANGED)
5905     return TRUE;
5906
5907   /* find the node internally */
5908   new_y = TREE_WINDOW_Y_TO_RBTREE_Y(tree_view, event->y);
5909   if (new_y < 0)
5910     new_y = 0;
5911   _gtk_rbtree_find_offset (tree_view->priv->tree, new_y, &tree, &node);
5912
5913   tree_view->priv->event_last_x = event->x;
5914   tree_view->priv->event_last_y = event->y;
5915
5916   if ((tree_view->priv->button_pressed_node == NULL) ||
5917       (tree_view->priv->button_pressed_node == node))
5918     prelight_or_select (tree_view, tree, node, event->x, event->y);
5919
5920   return TRUE;
5921 }
5922
5923 static gboolean
5924 gtk_tree_view_leave_notify (GtkWidget        *widget,
5925                             GdkEventCrossing *event)
5926 {
5927   GtkTreeView *tree_view;
5928
5929   if (event->mode == GDK_CROSSING_GRAB ||
5930       event->mode == GDK_CROSSING_GTK_GRAB ||
5931       event->mode == GDK_CROSSING_GTK_UNGRAB)
5932     return TRUE;
5933
5934   tree_view = GTK_TREE_VIEW (widget);
5935
5936   if (tree_view->priv->prelight_node)
5937     _gtk_tree_view_queue_draw_node (tree_view,
5938                                    tree_view->priv->prelight_tree,
5939                                    tree_view->priv->prelight_node,
5940                                    NULL);
5941
5942   tree_view->priv->event_last_x = -10000;
5943   tree_view->priv->event_last_y = -10000;
5944
5945   prelight_or_select (tree_view,
5946                       NULL, NULL,
5947                       -1000, -1000); /* coords not possibly over an arrow */
5948
5949   return TRUE;
5950 }
5951
5952
5953 static gint
5954 gtk_tree_view_focus_out (GtkWidget     *widget,
5955                          GdkEventFocus *event)
5956 {
5957   GtkTreeView *tree_view;
5958
5959   tree_view = GTK_TREE_VIEW (widget);
5960
5961   gtk_widget_queue_draw (widget);
5962
5963   /* destroy interactive search dialog */
5964   if (tree_view->priv->search_window)
5965     gtk_tree_view_search_dialog_hide (tree_view->priv->search_window, tree_view,
5966                                       gdk_event_get_device ((GdkEvent *) event));
5967
5968   return FALSE;
5969 }
5970
5971
5972 /* Incremental Reflow
5973  */
5974
5975 static void
5976 gtk_tree_view_node_queue_redraw (GtkTreeView *tree_view,
5977                                  GtkRBTree   *tree,
5978                                  GtkRBNode   *node)
5979 {
5980   GtkAllocation allocation;
5981   gint y;
5982
5983   y = _gtk_rbtree_node_find_offset (tree, node)
5984     - gtk_adjustment_get_value (tree_view->priv->vadjustment)
5985     + gtk_tree_view_get_effective_header_height (tree_view);
5986
5987   gtk_widget_get_allocation (GTK_WIDGET (tree_view), &allocation);
5988   gtk_widget_queue_draw_area (GTK_WIDGET (tree_view),
5989                               0, y,
5990                               allocation.width,
5991                               GTK_RBNODE_GET_HEIGHT (node));
5992 }
5993
5994 static gboolean
5995 node_is_visible (GtkTreeView *tree_view,
5996                  GtkRBTree   *tree,
5997                  GtkRBNode   *node)
5998 {
5999   int y;
6000   int height;
6001
6002   y = _gtk_rbtree_node_find_offset (tree, node);
6003   height = gtk_tree_view_get_row_height (tree_view, node);
6004
6005   if (y >= gtk_adjustment_get_value (tree_view->priv->vadjustment) &&
6006       y + height <= (gtk_adjustment_get_value (tree_view->priv->vadjustment)
6007                      + gtk_adjustment_get_page_size (tree_view->priv->vadjustment)))
6008     return TRUE;
6009
6010   return FALSE;
6011 }
6012
6013 /* Returns TRUE if it updated the size
6014  */
6015 static gboolean
6016 validate_row (GtkTreeView *tree_view,
6017               GtkRBTree   *tree,
6018               GtkRBNode   *node,
6019               GtkTreeIter *iter,
6020               GtkTreePath *path)
6021 {
6022   GtkTreeViewColumn *column;
6023   GList *list, *first_column, *last_column;
6024   gint height = 0;
6025   gint horizontal_separator;
6026   gint vertical_separator;
6027   gint depth = gtk_tree_path_get_depth (path);
6028   gboolean retval = FALSE;
6029   gboolean is_separator = FALSE;
6030   gboolean draw_vgrid_lines, draw_hgrid_lines;
6031   gint focus_pad;
6032   gint grid_line_width;
6033   gboolean wide_separators;
6034   gint separator_height;
6035
6036   /* double check the row needs validating */
6037   if (! GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_INVALID) &&
6038       ! GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_COLUMN_INVALID))
6039     return FALSE;
6040
6041   is_separator = row_is_separator (tree_view, iter, NULL);
6042
6043   gtk_widget_style_get (GTK_WIDGET (tree_view),
6044                         "focus-padding", &focus_pad,
6045                         "horizontal-separator", &horizontal_separator,
6046                         "vertical-separator", &vertical_separator,
6047                         "grid-line-width", &grid_line_width,
6048                         "wide-separators",  &wide_separators,
6049                         "separator-height", &separator_height,
6050                         NULL);
6051
6052   draw_vgrid_lines =
6053     tree_view->priv->grid_lines == GTK_TREE_VIEW_GRID_LINES_VERTICAL
6054     || tree_view->priv->grid_lines == GTK_TREE_VIEW_GRID_LINES_BOTH;
6055   draw_hgrid_lines =
6056     tree_view->priv->grid_lines == GTK_TREE_VIEW_GRID_LINES_HORIZONTAL
6057     || tree_view->priv->grid_lines == GTK_TREE_VIEW_GRID_LINES_BOTH;
6058
6059   for (last_column = g_list_last (tree_view->priv->columns);
6060        last_column &&
6061        !(gtk_tree_view_column_get_visible (GTK_TREE_VIEW_COLUMN (last_column->data)));
6062        last_column = last_column->prev)
6063     ;
6064
6065   for (first_column = g_list_first (tree_view->priv->columns);
6066        first_column &&
6067        !(gtk_tree_view_column_get_visible (GTK_TREE_VIEW_COLUMN (first_column->data)));
6068        first_column = first_column->next)
6069     ;
6070
6071   for (list = tree_view->priv->columns; list; list = list->next)
6072     {
6073       gint padding = 0;
6074       gint original_width;
6075       gint new_width;
6076       gint row_height;
6077
6078       column = list->data;
6079
6080       if (!gtk_tree_view_column_get_visible (column))
6081         continue;
6082
6083       if (GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_COLUMN_INVALID) &&
6084           !_gtk_tree_view_column_cell_get_dirty (column))
6085         continue;
6086
6087       original_width = _gtk_tree_view_column_get_requested_width (column);
6088
6089       gtk_tree_view_column_cell_set_cell_data (column, tree_view->priv->model, iter,
6090                                                GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_PARENT),
6091                                                node->children?TRUE:FALSE);
6092       gtk_tree_view_column_cell_get_size (column,
6093                                           NULL, NULL, NULL,
6094                                           NULL, &row_height);
6095
6096       if (!is_separator)
6097         {
6098           row_height += vertical_separator;
6099           height = MAX (height, row_height);
6100           height = MAX (height, tree_view->priv->expander_size);
6101         }
6102       else
6103         {
6104           if (wide_separators)
6105             height = separator_height + 2 * focus_pad;
6106           else
6107             height = 2 + 2 * focus_pad;
6108         }
6109
6110       if (gtk_tree_view_is_expander_column (tree_view, column))
6111         {
6112           padding += horizontal_separator + (depth - 1) * tree_view->priv->level_indentation;
6113
6114           if (gtk_tree_view_draw_expanders (tree_view))
6115             padding += depth * tree_view->priv->expander_size;
6116         }
6117       else
6118         padding += horizontal_separator;
6119
6120       if (draw_vgrid_lines)
6121         {
6122           if (list->data == first_column || list->data == last_column)
6123             padding += grid_line_width / 2.0;
6124           else
6125             padding += grid_line_width;
6126         }
6127
6128       /* Update the padding for the column */
6129       _gtk_tree_view_column_push_padding (column, padding);
6130       new_width = _gtk_tree_view_column_get_requested_width (column);
6131
6132       if (new_width > original_width)
6133         retval = TRUE;
6134     }
6135
6136   if (draw_hgrid_lines)
6137     height += grid_line_width;
6138
6139   if (height != GTK_RBNODE_GET_HEIGHT (node))
6140     {
6141       retval = TRUE;
6142       _gtk_rbtree_node_set_height (tree, node, height);
6143     }
6144   _gtk_rbtree_node_mark_valid (tree, node);
6145   tree_view->priv->post_validation_flag = TRUE;
6146
6147   return retval;
6148 }
6149
6150
6151 static void
6152 validate_visible_area (GtkTreeView *tree_view)
6153 {
6154   GtkAllocation allocation;
6155   GtkTreePath *path = NULL;
6156   GtkTreePath *above_path = NULL;
6157   GtkTreeIter iter;
6158   GtkRBTree *tree = NULL;
6159   GtkRBNode *node = NULL;
6160   gboolean need_redraw = FALSE;
6161   gboolean size_changed = FALSE;
6162   gint total_height;
6163   gint area_above = 0;
6164   gint area_below = 0;
6165
6166   if (tree_view->priv->tree == NULL)
6167     return;
6168
6169   if (! GTK_RBNODE_FLAG_SET (tree_view->priv->tree->root, GTK_RBNODE_DESCENDANTS_INVALID) &&
6170       tree_view->priv->scroll_to_path == NULL)
6171     return;
6172
6173   gtk_widget_get_allocation (GTK_WIDGET (tree_view), &allocation);
6174   total_height = allocation.height - gtk_tree_view_get_effective_header_height (tree_view);
6175
6176   if (total_height == 0)
6177     return;
6178
6179   /* First, we check to see if we need to scroll anywhere
6180    */
6181   if (tree_view->priv->scroll_to_path)
6182     {
6183       path = gtk_tree_row_reference_get_path (tree_view->priv->scroll_to_path);
6184       if (path && !_gtk_tree_view_find_node (tree_view, path, &tree, &node))
6185         {
6186           /* we are going to scroll, and will update dy */
6187           gtk_tree_model_get_iter (tree_view->priv->model, &iter, path);
6188           if (GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_INVALID) ||
6189               GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_COLUMN_INVALID))
6190             {
6191               _gtk_tree_view_queue_draw_node (tree_view, tree, node, NULL);
6192               if (validate_row (tree_view, tree, node, &iter, path))
6193                 size_changed = TRUE;
6194             }
6195
6196           if (tree_view->priv->scroll_to_use_align)
6197             {
6198               gint height = gtk_tree_view_get_row_height (tree_view, node);
6199               area_above = (total_height - height) *
6200                 tree_view->priv->scroll_to_row_align;
6201               area_below = total_height - area_above - height;
6202               area_above = MAX (area_above, 0);
6203               area_below = MAX (area_below, 0);
6204             }
6205           else
6206             {
6207               /* two cases:
6208                * 1) row not visible
6209                * 2) row visible
6210                */
6211               gint dy;
6212               gint height = gtk_tree_view_get_row_height (tree_view, node);
6213
6214               dy = _gtk_rbtree_node_find_offset (tree, node);
6215
6216               if (dy >= gtk_adjustment_get_value (tree_view->priv->vadjustment) &&
6217                   dy + height <= (gtk_adjustment_get_value (tree_view->priv->vadjustment)
6218                                   + gtk_adjustment_get_page_size (tree_view->priv->vadjustment)))
6219                 {
6220                   /* row visible: keep the row at the same position */
6221                   area_above = dy - gtk_adjustment_get_value (tree_view->priv->vadjustment);
6222                   area_below = (gtk_adjustment_get_value (tree_view->priv->vadjustment) +
6223                                 gtk_adjustment_get_page_size (tree_view->priv->vadjustment))
6224                                - dy - height;
6225                 }
6226               else
6227                 {
6228                   /* row not visible */
6229                   if (dy >= 0
6230                       && dy + height <= gtk_adjustment_get_page_size (tree_view->priv->vadjustment))
6231                     {
6232                       /* row at the beginning -- fixed */
6233                       area_above = dy;
6234                       area_below = gtk_adjustment_get_page_size (tree_view->priv->vadjustment)
6235                                    - area_above - height;
6236                     }
6237                   else if (dy >= (gtk_adjustment_get_upper (tree_view->priv->vadjustment) -
6238                                   gtk_adjustment_get_page_size (tree_view->priv->vadjustment)))
6239                     {
6240                       /* row at the end -- fixed */
6241                       area_above = dy - (gtk_adjustment_get_upper (tree_view->priv->vadjustment) -
6242                                    gtk_adjustment_get_page_size (tree_view->priv->vadjustment));
6243                       area_below = gtk_adjustment_get_page_size (tree_view->priv->vadjustment) -
6244                                    area_above - height;
6245
6246                       if (area_below < 0)
6247                         {
6248                           area_above = gtk_adjustment_get_page_size (tree_view->priv->vadjustment) - height;
6249                           area_below = 0;
6250                         }
6251                     }
6252                   else
6253                     {
6254                       /* row somewhere in the middle, bring it to the top
6255                        * of the view
6256                        */
6257                       area_above = 0;
6258                       area_below = total_height - height;
6259                     }
6260                 }
6261             }
6262         }
6263       else
6264         /* the scroll to isn't valid; ignore it.
6265          */
6266         {
6267           if (tree_view->priv->scroll_to_path && !path)
6268             {
6269               gtk_tree_row_reference_free (tree_view->priv->scroll_to_path);
6270               tree_view->priv->scroll_to_path = NULL;
6271             }
6272           if (path)
6273             gtk_tree_path_free (path);
6274           path = NULL;
6275         }
6276     }
6277
6278   /* We didn't have a scroll_to set, so we just handle things normally
6279    */
6280   if (path == NULL)
6281     {
6282       gint offset;
6283
6284       offset = _gtk_rbtree_find_offset (tree_view->priv->tree,
6285                                         TREE_WINDOW_Y_TO_RBTREE_Y (tree_view, 0),
6286                                         &tree, &node);
6287       if (node == NULL)
6288         {
6289           /* In this case, nothing has been validated */
6290           path = gtk_tree_path_new_first ();
6291           _gtk_tree_view_find_node (tree_view, path, &tree, &node);
6292         }
6293       else
6294         {
6295           path = _gtk_tree_path_new_from_rbtree (tree, node);
6296           total_height += offset;
6297         }
6298
6299       gtk_tree_model_get_iter (tree_view->priv->model, &iter, path);
6300
6301       if (GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_INVALID) ||
6302           GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_COLUMN_INVALID))
6303         {
6304           _gtk_tree_view_queue_draw_node (tree_view, tree, node, NULL);
6305           if (validate_row (tree_view, tree, node, &iter, path))
6306             size_changed = TRUE;
6307         }
6308       area_above = 0;
6309       area_below = total_height - gtk_tree_view_get_row_height (tree_view, node);
6310     }
6311
6312   above_path = gtk_tree_path_copy (path);
6313
6314   /* if we do not validate any row above the new top_row, we will make sure
6315    * that the row immediately above top_row has been validated. (if we do not
6316    * do this, _gtk_rbtree_find_offset will find the row above top_row, because
6317    * when invalidated that row's height will be zero. and this will mess up
6318    * scrolling).
6319    */
6320   if (area_above == 0)
6321     {
6322       GtkRBTree *tmptree;
6323       GtkRBNode *tmpnode;
6324
6325       _gtk_tree_view_find_node (tree_view, above_path, &tmptree, &tmpnode);
6326       _gtk_rbtree_prev_full (tmptree, tmpnode, &tmptree, &tmpnode);
6327
6328       if (tmpnode)
6329         {
6330           GtkTreePath *tmppath;
6331           GtkTreeIter tmpiter;
6332
6333           tmppath = _gtk_tree_path_new_from_rbtree (tmptree, tmpnode);
6334           gtk_tree_model_get_iter (tree_view->priv->model, &tmpiter, tmppath);
6335
6336           if (GTK_RBNODE_FLAG_SET (tmpnode, GTK_RBNODE_INVALID) ||
6337               GTK_RBNODE_FLAG_SET (tmpnode, GTK_RBNODE_COLUMN_INVALID))
6338             {
6339               _gtk_tree_view_queue_draw_node (tree_view, tmptree, tmpnode, NULL);
6340               if (validate_row (tree_view, tmptree, tmpnode, &tmpiter, tmppath))
6341                 size_changed = TRUE;
6342             }
6343
6344           gtk_tree_path_free (tmppath);
6345         }
6346     }
6347
6348   /* Now, we walk forwards and backwards, measuring rows. Unfortunately,
6349    * backwards is much slower then forward, as there is no iter_prev function.
6350    * We go forwards first in case we run out of tree.  Then we go backwards to
6351    * fill out the top.
6352    */
6353   while (node && area_below > 0)
6354     {
6355       if (node->children)
6356         {
6357           GtkTreeIter parent = iter;
6358           gboolean has_child;
6359
6360           tree = node->children;
6361           node = _gtk_rbtree_first (tree);
6362
6363           has_child = gtk_tree_model_iter_children (tree_view->priv->model,
6364                                                     &iter,
6365                                                     &parent);
6366           TREE_VIEW_INTERNAL_ASSERT_VOID (has_child);
6367           gtk_tree_path_down (path);
6368         }
6369       else
6370         {
6371           gboolean done = FALSE;
6372           do
6373             {
6374               node = _gtk_rbtree_next (tree, node);
6375               if (node != NULL)
6376                 {
6377                   gboolean has_next = gtk_tree_model_iter_next (tree_view->priv->model, &iter);
6378                   done = TRUE;
6379                   gtk_tree_path_next (path);
6380
6381                   /* Sanity Check! */
6382                   TREE_VIEW_INTERNAL_ASSERT_VOID (has_next);
6383                 }
6384               else
6385                 {
6386                   GtkTreeIter parent_iter = iter;
6387                   gboolean has_parent;
6388
6389                   node = tree->parent_node;
6390                   tree = tree->parent_tree;
6391                   if (tree == NULL)
6392                     break;
6393                   has_parent = gtk_tree_model_iter_parent (tree_view->priv->model,
6394                                                            &iter,
6395                                                            &parent_iter);
6396                   gtk_tree_path_up (path);
6397
6398                   /* Sanity check */
6399                   TREE_VIEW_INTERNAL_ASSERT_VOID (has_parent);
6400                 }
6401             }
6402           while (!done);
6403         }
6404
6405       if (!node)
6406         break;
6407
6408       if (GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_INVALID) ||
6409           GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_COLUMN_INVALID))
6410         {
6411           _gtk_tree_view_queue_draw_node (tree_view, tree, node, NULL);
6412           if (validate_row (tree_view, tree, node, &iter, path))
6413               size_changed = TRUE;
6414         }
6415
6416       area_below -= gtk_tree_view_get_row_height (tree_view, node);
6417     }
6418   gtk_tree_path_free (path);
6419
6420   /* If we ran out of tree, and have extra area_below left, we need to add it
6421    * to area_above */
6422   if (area_below > 0)
6423     area_above += area_below;
6424
6425   _gtk_tree_view_find_node (tree_view, above_path, &tree, &node);
6426
6427   /* We walk backwards */
6428   while (area_above > 0)
6429     {
6430       _gtk_rbtree_prev_full (tree, node, &tree, &node);
6431
6432       /* Always find the new path in the tree.  We cannot just assume
6433        * a gtk_tree_path_prev() is enough here, as there might be children
6434        * in between this node and the previous sibling node.  If this
6435        * appears to be a performance hotspot in profiles, we can look into
6436        * intrigate logic for keeping path, node and iter in sync like
6437        * we do for forward walks.  (Which will be hard because of the lacking
6438        * iter_prev).
6439        */
6440
6441       if (node == NULL)
6442         break;
6443
6444       gtk_tree_path_free (above_path);
6445       above_path = _gtk_tree_path_new_from_rbtree (tree, node);
6446
6447       gtk_tree_model_get_iter (tree_view->priv->model, &iter, above_path);
6448
6449       if (GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_INVALID) ||
6450           GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_COLUMN_INVALID))
6451         {
6452           _gtk_tree_view_queue_draw_node (tree_view, tree, node, NULL);
6453           if (validate_row (tree_view, tree, node, &iter, above_path))
6454             size_changed = TRUE;
6455         }
6456       area_above -= gtk_tree_view_get_row_height (tree_view, node);
6457     }
6458
6459   /* if we scrolled to a path, we need to set the dy here,
6460    * and sync the top row accordingly
6461    */
6462   if (tree_view->priv->scroll_to_path)
6463     {
6464       gtk_tree_view_set_top_row (tree_view, above_path, -area_above);
6465       gtk_tree_view_top_row_to_dy (tree_view);
6466
6467       need_redraw = TRUE;
6468     }
6469   else if (tree_view->priv->height <= gtk_adjustment_get_page_size (tree_view->priv->vadjustment))
6470     {
6471       /* when we are not scrolling, we should never set dy to something
6472        * else than zero. we update top_row to be in sync with dy = 0.
6473        */
6474       gtk_adjustment_set_value (GTK_ADJUSTMENT (tree_view->priv->vadjustment), 0);
6475       gtk_tree_view_dy_to_top_row (tree_view);
6476     }
6477   else if (gtk_adjustment_get_value (tree_view->priv->vadjustment) + gtk_adjustment_get_page_size (tree_view->priv->vadjustment) > tree_view->priv->height)
6478     {
6479       gtk_adjustment_set_value (GTK_ADJUSTMENT (tree_view->priv->vadjustment), tree_view->priv->height - gtk_adjustment_get_page_size (tree_view->priv->vadjustment));
6480       gtk_tree_view_dy_to_top_row (tree_view);
6481     }
6482   else
6483     gtk_tree_view_top_row_to_dy (tree_view);
6484
6485   /* update width/height and queue a resize */
6486   if (size_changed)
6487     {
6488       GtkRequisition requisition;
6489
6490       /* We temporarily guess a size, under the assumption that it will be the
6491        * same when we get our next size_allocate.  If we don't do this, we'll be
6492        * in an inconsistent state if we call top_row_to_dy. */
6493
6494       gtk_widget_get_preferred_size (GTK_WIDGET (tree_view),
6495                                      &requisition, NULL);
6496       gtk_adjustment_set_upper (tree_view->priv->hadjustment,
6497                                 MAX (gtk_adjustment_get_upper (tree_view->priv->hadjustment), requisition.width));
6498       gtk_adjustment_set_upper (tree_view->priv->vadjustment,
6499                                 MAX (gtk_adjustment_get_upper (tree_view->priv->vadjustment), requisition.height));
6500       gtk_widget_queue_resize (GTK_WIDGET (tree_view));
6501     }
6502
6503   if (tree_view->priv->scroll_to_path)
6504     {
6505       gtk_tree_row_reference_free (tree_view->priv->scroll_to_path);
6506       tree_view->priv->scroll_to_path = NULL;
6507     }
6508
6509   if (above_path)
6510     gtk_tree_path_free (above_path);
6511
6512   if (tree_view->priv->scroll_to_column)
6513     {
6514       tree_view->priv->scroll_to_column = NULL;
6515     }
6516   if (need_redraw)
6517     gtk_widget_queue_draw (GTK_WIDGET (tree_view));
6518 }
6519
6520 static void
6521 initialize_fixed_height_mode (GtkTreeView *tree_view)
6522 {
6523   if (!tree_view->priv->tree)
6524     return;
6525
6526   if (tree_view->priv->fixed_height < 0)
6527     {
6528       GtkTreeIter iter;
6529       GtkTreePath *path;
6530
6531       GtkRBTree *tree = NULL;
6532       GtkRBNode *node = NULL;
6533
6534       tree = tree_view->priv->tree;
6535       node = tree->root;
6536
6537       path = _gtk_tree_path_new_from_rbtree (tree, node);
6538       gtk_tree_model_get_iter (tree_view->priv->model, &iter, path);
6539
6540       validate_row (tree_view, tree, node, &iter, path);
6541
6542       gtk_tree_path_free (path);
6543
6544       tree_view->priv->fixed_height = gtk_tree_view_get_row_height (tree_view, node);
6545     }
6546
6547    _gtk_rbtree_set_fixed_height (tree_view->priv->tree,
6548                                  tree_view->priv->fixed_height, TRUE);
6549 }
6550
6551 /* Our strategy for finding nodes to validate is a little convoluted.  We find
6552  * the left-most uninvalidated node.  We then try walking right, validating
6553  * nodes.  Once we find a valid node, we repeat the previous process of finding
6554  * the first invalid node.
6555  */
6556
6557 static gboolean
6558 do_validate_rows (GtkTreeView *tree_view, gboolean queue_resize)
6559 {
6560   GtkRBTree *tree = NULL;
6561   GtkRBNode *node = NULL;
6562   gboolean validated_area = FALSE;
6563   gint retval = TRUE;
6564   GtkTreePath *path = NULL;
6565   GtkTreeIter iter;
6566   GTimer *timer;
6567   gint i = 0;
6568
6569   gint y = -1;
6570   gint prev_height = -1;
6571   gboolean fixed_height = TRUE;
6572
6573   g_assert (tree_view);
6574
6575   if (tree_view->priv->tree == NULL)
6576       return FALSE;
6577
6578   if (tree_view->priv->fixed_height_mode)
6579     {
6580       if (tree_view->priv->fixed_height < 0)
6581         initialize_fixed_height_mode (tree_view);
6582
6583       return FALSE;
6584     }
6585
6586   timer = g_timer_new ();
6587   g_timer_start (timer);
6588
6589   do
6590     {
6591       gboolean changed = FALSE;
6592
6593       if (! GTK_RBNODE_FLAG_SET (tree_view->priv->tree->root, GTK_RBNODE_DESCENDANTS_INVALID))
6594         {
6595           retval = FALSE;
6596           goto done;
6597         }
6598
6599       if (path != NULL)
6600         {
6601           node = _gtk_rbtree_next (tree, node);
6602           if (node != NULL)
6603             {
6604               TREE_VIEW_INTERNAL_ASSERT (gtk_tree_model_iter_next (tree_view->priv->model, &iter), FALSE);
6605               gtk_tree_path_next (path);
6606             }
6607           else
6608             {
6609               gtk_tree_path_free (path);
6610               path = NULL;
6611             }
6612         }
6613
6614       if (path == NULL)
6615         {
6616           tree = tree_view->priv->tree;
6617           node = tree_view->priv->tree->root;
6618
6619           g_assert (GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_DESCENDANTS_INVALID));
6620
6621           do
6622             {
6623               if (!_gtk_rbtree_is_nil (node->left) &&
6624                   GTK_RBNODE_FLAG_SET (node->left, GTK_RBNODE_DESCENDANTS_INVALID))
6625                 {
6626                   node = node->left;
6627                 }
6628               else if (!_gtk_rbtree_is_nil (node->right) &&
6629                        GTK_RBNODE_FLAG_SET (node->right, GTK_RBNODE_DESCENDANTS_INVALID))
6630                 {
6631                   node = node->right;
6632                 }
6633               else if (GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_INVALID) ||
6634                        GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_COLUMN_INVALID))
6635                 {
6636                   break;
6637                 }
6638               else if (node->children != NULL)
6639                 {
6640                   tree = node->children;
6641                   node = tree->root;
6642                 }
6643               else
6644                 /* RBTree corruption!  All bad */
6645                 g_assert_not_reached ();
6646             }
6647           while (TRUE);
6648           path = _gtk_tree_path_new_from_rbtree (tree, node);
6649           gtk_tree_model_get_iter (tree_view->priv->model, &iter, path);
6650         }
6651
6652       changed = validate_row (tree_view, tree, node, &iter, path);
6653       validated_area = changed || validated_area;
6654
6655       if (changed)
6656         {
6657           gint offset = gtk_tree_view_get_row_y_offset (tree_view, tree, node);
6658
6659           if (y == -1 || y > offset)
6660             y = offset;
6661         }
6662
6663       if (!tree_view->priv->fixed_height_check)
6664         {
6665           gint height;
6666
6667           height = gtk_tree_view_get_row_height (tree_view, node);
6668           if (prev_height < 0)
6669             prev_height = height;
6670           else if (prev_height != height)
6671             fixed_height = FALSE;
6672         }
6673
6674       i++;
6675     }
6676   while (g_timer_elapsed (timer, NULL) < GTK_TREE_VIEW_TIME_MS_PER_IDLE / 1000.);
6677
6678   if (!tree_view->priv->fixed_height_check)
6679    {
6680      if (fixed_height)
6681        _gtk_rbtree_set_fixed_height (tree_view->priv->tree, prev_height, FALSE);
6682
6683      tree_view->priv->fixed_height_check = 1;
6684    }
6685
6686  done:
6687   if (validated_area)
6688     {
6689       GtkRequisition requisition;
6690
6691       /* We temporarily guess a size, under the assumption that it will be the
6692        * same when we get our next size_allocate.  If we don't do this, we'll be
6693        * in an inconsistent state when we call top_row_to_dy. */
6694
6695       /* FIXME: This is called from size_request, for some reason it is not infinitely
6696        * recursing, we cannot call gtk_widget_get_preferred_size() here because that's
6697        * not allowed (from inside ->get_preferred_width/height() implementations, one
6698        * should call the vfuncs directly). However what is desired here is the full
6699        * size including any margins and limited by any alignment (i.e. after
6700        * GtkWidget:adjust_size_request() is called).
6701        *
6702        * Currently bypassing this but the real solution is to not update the scroll adjustments
6703        * untill we've recieved an allocation (never update scroll adjustments from size-requests).
6704        */
6705       gtk_tree_view_size_request (GTK_WIDGET (tree_view), &requisition, FALSE);
6706
6707       /* If rows above the current position have changed height, this has
6708        * affected the current view and thus needs a redraw.
6709        */
6710       if (y != -1 && y < gtk_adjustment_get_value (tree_view->priv->vadjustment))
6711         gtk_widget_queue_draw (GTK_WIDGET (tree_view));
6712
6713       gtk_adjustment_set_upper (tree_view->priv->hadjustment,
6714                                 MAX (gtk_adjustment_get_upper (tree_view->priv->hadjustment), requisition.width));
6715       gtk_adjustment_set_upper (tree_view->priv->vadjustment,
6716                                 MAX (gtk_adjustment_get_upper (tree_view->priv->vadjustment), requisition.height));
6717
6718       if (queue_resize)
6719         gtk_widget_queue_resize_no_redraw (GTK_WIDGET (tree_view));
6720     }
6721
6722   if (path) gtk_tree_path_free (path);
6723   g_timer_destroy (timer);
6724
6725   return retval;
6726 }
6727
6728 static gboolean
6729 validate_rows (GtkTreeView *tree_view)
6730 {
6731   gboolean retval;
6732
6733   retval = do_validate_rows (tree_view, TRUE);
6734
6735   if (! retval && tree_view->priv->validate_rows_timer)
6736     {
6737       g_source_remove (tree_view->priv->validate_rows_timer);
6738       tree_view->priv->validate_rows_timer = 0;
6739     }
6740
6741   return retval;
6742 }
6743
6744 static gboolean
6745 validate_rows_handler (GtkTreeView *tree_view)
6746 {
6747   gboolean retval;
6748
6749   retval = do_validate_rows (tree_view, TRUE);
6750   if (! retval && tree_view->priv->validate_rows_timer)
6751     {
6752       g_source_remove (tree_view->priv->validate_rows_timer);
6753       tree_view->priv->validate_rows_timer = 0;
6754     }
6755
6756   return retval;
6757 }
6758
6759 static gboolean
6760 do_presize_handler (GtkTreeView *tree_view)
6761 {
6762   if (tree_view->priv->mark_rows_col_dirty)
6763     {
6764       if (tree_view->priv->tree)
6765         _gtk_rbtree_column_invalid (tree_view->priv->tree);
6766       tree_view->priv->mark_rows_col_dirty = FALSE;
6767     }
6768   validate_visible_area (tree_view);
6769   tree_view->priv->presize_handler_timer = 0;
6770
6771   if (tree_view->priv->fixed_height_mode)
6772     {
6773       GtkRequisition requisition;
6774
6775       gtk_widget_get_preferred_size (GTK_WIDGET (tree_view),
6776                                      &requisition, NULL);
6777
6778       gtk_adjustment_set_upper (tree_view->priv->hadjustment,
6779                                 MAX (gtk_adjustment_get_upper (tree_view->priv->hadjustment), requisition.width));
6780       gtk_adjustment_set_upper (tree_view->priv->vadjustment,
6781                                 MAX (gtk_adjustment_get_upper (tree_view->priv->vadjustment), requisition.height));
6782       gtk_widget_queue_resize (GTK_WIDGET (tree_view));
6783     }
6784
6785   return FALSE;
6786 }
6787
6788 static gboolean
6789 presize_handler_callback (gpointer data)
6790 {
6791   do_presize_handler (GTK_TREE_VIEW (data));
6792
6793   return FALSE;
6794 }
6795
6796 static void
6797 install_presize_handler (GtkTreeView *tree_view)
6798 {
6799   if (! gtk_widget_get_realized (GTK_WIDGET (tree_view)))
6800     return;
6801
6802   if (! tree_view->priv->presize_handler_timer)
6803     {
6804       tree_view->priv->presize_handler_timer =
6805         gdk_threads_add_idle_full (GTK_PRIORITY_RESIZE - 2, presize_handler_callback, tree_view, NULL);
6806     }
6807   if (! tree_view->priv->validate_rows_timer)
6808     {
6809       tree_view->priv->validate_rows_timer =
6810         gdk_threads_add_idle_full (GTK_TREE_VIEW_PRIORITY_VALIDATE, (GSourceFunc) validate_rows_handler, tree_view, NULL);
6811     }
6812 }
6813
6814 static void
6815 gtk_tree_view_bin_process_updates (GtkTreeView *tree_view)
6816 {
6817   /* Prior to drawing, we make sure the visible area is validated. */
6818   if (tree_view->priv->presize_handler_timer)
6819     {
6820       g_source_remove (tree_view->priv->presize_handler_timer);
6821       tree_view->priv->presize_handler_timer = 0;
6822
6823       do_presize_handler (tree_view);
6824     }
6825
6826   gdk_window_process_updates (tree_view->priv->bin_window, TRUE);
6827 }
6828
6829 static gboolean
6830 scroll_sync_handler (GtkTreeView *tree_view)
6831 {
6832   if (tree_view->priv->height <= gtk_adjustment_get_page_size (tree_view->priv->vadjustment))
6833     gtk_adjustment_set_value (GTK_ADJUSTMENT (tree_view->priv->vadjustment), 0);
6834   else if (gtk_tree_row_reference_valid (tree_view->priv->top_row))
6835     gtk_tree_view_top_row_to_dy (tree_view);
6836   else
6837     gtk_tree_view_dy_to_top_row (tree_view);
6838
6839   tree_view->priv->scroll_sync_timer = 0;
6840
6841   return FALSE;
6842 }
6843
6844 static void
6845 install_scroll_sync_handler (GtkTreeView *tree_view)
6846 {
6847   if (!gtk_widget_get_realized (GTK_WIDGET (tree_view)))
6848     return;
6849
6850   if (!tree_view->priv->scroll_sync_timer)
6851     {
6852       tree_view->priv->scroll_sync_timer =
6853         gdk_threads_add_idle_full (GTK_TREE_VIEW_PRIORITY_SCROLL_SYNC, (GSourceFunc) scroll_sync_handler, tree_view, NULL);
6854     }
6855 }
6856
6857 static void
6858 gtk_tree_view_set_top_row (GtkTreeView *tree_view,
6859                            GtkTreePath *path,
6860                            gint         offset)
6861 {
6862   gtk_tree_row_reference_free (tree_view->priv->top_row);
6863
6864   if (!path)
6865     {
6866       tree_view->priv->top_row = NULL;
6867       tree_view->priv->top_row_dy = 0;
6868     }
6869   else
6870     {
6871       tree_view->priv->top_row = gtk_tree_row_reference_new_proxy (G_OBJECT (tree_view), tree_view->priv->model, path);
6872       tree_view->priv->top_row_dy = offset;
6873     }
6874 }
6875
6876 /* Always call this iff dy is in the visible range.  If the tree is empty, then
6877  * it's set to be NULL, and top_row_dy is 0;
6878  */
6879 static void
6880 gtk_tree_view_dy_to_top_row (GtkTreeView *tree_view)
6881 {
6882   gint offset;
6883   GtkTreePath *path;
6884   GtkRBTree *tree;
6885   GtkRBNode *node;
6886
6887   if (tree_view->priv->tree == NULL)
6888     {
6889       gtk_tree_view_set_top_row (tree_view, NULL, 0);
6890     }
6891   else
6892     {
6893       offset = _gtk_rbtree_find_offset (tree_view->priv->tree,
6894                                         tree_view->priv->dy,
6895                                         &tree, &node);
6896
6897       if (tree == NULL)
6898         {
6899           gtk_tree_view_set_top_row (tree_view, NULL, 0);
6900         }
6901       else
6902         {
6903           path = _gtk_tree_path_new_from_rbtree (tree, node);
6904           gtk_tree_view_set_top_row (tree_view, path, offset);
6905           gtk_tree_path_free (path);
6906         }
6907     }
6908 }
6909
6910 static void
6911 gtk_tree_view_top_row_to_dy (GtkTreeView *tree_view)
6912 {
6913   GtkTreePath *path;
6914   GtkRBTree *tree;
6915   GtkRBNode *node;
6916   int new_dy;
6917
6918   /* Avoid recursive calls */
6919   if (tree_view->priv->in_top_row_to_dy)
6920     return;
6921
6922   if (tree_view->priv->top_row)
6923     path = gtk_tree_row_reference_get_path (tree_view->priv->top_row);
6924   else
6925     path = NULL;
6926
6927   if (!path)
6928     tree = NULL;
6929   else
6930     _gtk_tree_view_find_node (tree_view, path, &tree, &node);
6931
6932   if (path)
6933     gtk_tree_path_free (path);
6934
6935   if (tree == NULL)
6936     {
6937       /* keep dy and set new toprow */
6938       gtk_tree_row_reference_free (tree_view->priv->top_row);
6939       tree_view->priv->top_row = NULL;
6940       tree_view->priv->top_row_dy = 0;
6941       /* DO NOT install the idle handler */
6942       gtk_tree_view_dy_to_top_row (tree_view);
6943       return;
6944     }
6945
6946   if (gtk_tree_view_get_row_height (tree_view, node)
6947       < tree_view->priv->top_row_dy)
6948     {
6949       /* new top row -- do NOT install the idle handler */
6950       gtk_tree_view_dy_to_top_row (tree_view);
6951       return;
6952     }
6953
6954   new_dy = _gtk_rbtree_node_find_offset (tree, node);
6955   new_dy += tree_view->priv->top_row_dy;
6956
6957   if (new_dy + gtk_adjustment_get_page_size (tree_view->priv->vadjustment) > tree_view->priv->height)
6958     new_dy = tree_view->priv->height - gtk_adjustment_get_page_size (tree_view->priv->vadjustment);
6959
6960   new_dy = MAX (0, new_dy);
6961
6962   tree_view->priv->in_top_row_to_dy = TRUE;
6963   gtk_adjustment_set_value (tree_view->priv->vadjustment, (gdouble)new_dy);
6964   tree_view->priv->in_top_row_to_dy = FALSE;
6965 }
6966
6967
6968 void
6969 _gtk_tree_view_install_mark_rows_col_dirty (GtkTreeView *tree_view,
6970                                             gboolean     install_handler)
6971 {
6972   tree_view->priv->mark_rows_col_dirty = TRUE;
6973
6974   if (install_handler)
6975     install_presize_handler (tree_view);
6976 }
6977
6978 /*
6979  * This function works synchronously (due to the while (validate_rows...)
6980  * loop).
6981  *
6982  * There was a check for column_type != GTK_TREE_VIEW_COLUMN_AUTOSIZE
6983  * here. You now need to check that yourself.
6984  */
6985 void
6986 _gtk_tree_view_column_autosize (GtkTreeView *tree_view,
6987                                 GtkTreeViewColumn *column)
6988 {
6989   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
6990   g_return_if_fail (GTK_IS_TREE_VIEW_COLUMN (column));
6991
6992   _gtk_tree_view_column_cell_set_dirty (column, FALSE);
6993
6994   do_presize_handler (tree_view);
6995   while (validate_rows (tree_view));
6996
6997   gtk_widget_queue_resize (GTK_WIDGET (tree_view));
6998 }
6999
7000 /* Drag-and-drop */
7001
7002 static void
7003 set_source_row (GdkDragContext *context,
7004                 GtkTreeModel   *model,
7005                 GtkTreePath    *source_row)
7006 {
7007   g_object_set_data_full (G_OBJECT (context),
7008                           I_("gtk-tree-view-source-row"),
7009                           source_row ? gtk_tree_row_reference_new (model, source_row) : NULL,
7010                           (GDestroyNotify) (source_row ? gtk_tree_row_reference_free : NULL));
7011 }
7012
7013 static GtkTreePath*
7014 get_source_row (GdkDragContext *context)
7015 {
7016   GtkTreeRowReference *ref =
7017     g_object_get_data (G_OBJECT (context), "gtk-tree-view-source-row");
7018
7019   if (ref)
7020     return gtk_tree_row_reference_get_path (ref);
7021   else
7022     return NULL;
7023 }
7024
7025 typedef struct
7026 {
7027   GtkTreeRowReference *dest_row;
7028   guint                path_down_mode   : 1;
7029   guint                empty_view_drop  : 1;
7030   guint                drop_append_mode : 1;
7031 }
7032 DestRow;
7033
7034 static void
7035 dest_row_free (gpointer data)
7036 {
7037   DestRow *dr = (DestRow *)data;
7038
7039   gtk_tree_row_reference_free (dr->dest_row);
7040   g_slice_free (DestRow, dr);
7041 }
7042
7043 static void
7044 set_dest_row (GdkDragContext *context,
7045               GtkTreeModel   *model,
7046               GtkTreePath    *dest_row,
7047               gboolean        path_down_mode,
7048               gboolean        empty_view_drop,
7049               gboolean        drop_append_mode)
7050 {
7051   DestRow *dr;
7052
7053   if (!dest_row)
7054     {
7055       g_object_set_data_full (G_OBJECT (context), I_("gtk-tree-view-dest-row"),
7056                               NULL, NULL);
7057       return;
7058     }
7059
7060   dr = g_slice_new (DestRow);
7061
7062   dr->dest_row = gtk_tree_row_reference_new (model, dest_row);
7063   dr->path_down_mode = path_down_mode != FALSE;
7064   dr->empty_view_drop = empty_view_drop != FALSE;
7065   dr->drop_append_mode = drop_append_mode != FALSE;
7066
7067   g_object_set_data_full (G_OBJECT (context), I_("gtk-tree-view-dest-row"),
7068                           dr, (GDestroyNotify) dest_row_free);
7069 }
7070
7071 static GtkTreePath*
7072 get_dest_row (GdkDragContext *context,
7073               gboolean       *path_down_mode)
7074 {
7075   DestRow *dr =
7076     g_object_get_data (G_OBJECT (context), "gtk-tree-view-dest-row");
7077
7078   if (dr)
7079     {
7080       GtkTreePath *path = NULL;
7081
7082       if (path_down_mode)
7083         *path_down_mode = dr->path_down_mode;
7084
7085       if (dr->dest_row)
7086         path = gtk_tree_row_reference_get_path (dr->dest_row);
7087       else if (dr->empty_view_drop)
7088         path = gtk_tree_path_new_from_indices (0, -1);
7089       else
7090         path = NULL;
7091
7092       if (path && dr->drop_append_mode)
7093         gtk_tree_path_next (path);
7094
7095       return path;
7096     }
7097   else
7098     return NULL;
7099 }
7100
7101 /* Get/set whether drag_motion requested the drag data and
7102  * drag_data_received should thus not actually insert the data,
7103  * since the data doesn't result from a drop.
7104  */
7105 static void
7106 set_status_pending (GdkDragContext *context,
7107                     GdkDragAction   suggested_action)
7108 {
7109   g_object_set_data (G_OBJECT (context),
7110                      I_("gtk-tree-view-status-pending"),
7111                      GINT_TO_POINTER (suggested_action));
7112 }
7113
7114 static GdkDragAction
7115 get_status_pending (GdkDragContext *context)
7116 {
7117   return GPOINTER_TO_INT (g_object_get_data (G_OBJECT (context),
7118                                              "gtk-tree-view-status-pending"));
7119 }
7120
7121 static TreeViewDragInfo*
7122 get_info (GtkTreeView *tree_view)
7123 {
7124   return g_object_get_data (G_OBJECT (tree_view), "gtk-tree-view-drag-info");
7125 }
7126
7127 static void
7128 destroy_info (TreeViewDragInfo *di)
7129 {
7130   g_slice_free (TreeViewDragInfo, di);
7131 }
7132
7133 static TreeViewDragInfo*
7134 ensure_info (GtkTreeView *tree_view)
7135 {
7136   TreeViewDragInfo *di;
7137
7138   di = get_info (tree_view);
7139
7140   if (di == NULL)
7141     {
7142       di = g_slice_new0 (TreeViewDragInfo);
7143
7144       g_object_set_data_full (G_OBJECT (tree_view),
7145                               I_("gtk-tree-view-drag-info"),
7146                               di,
7147                               (GDestroyNotify) destroy_info);
7148     }
7149
7150   return di;
7151 }
7152
7153 static void
7154 remove_info (GtkTreeView *tree_view)
7155 {
7156   g_object_set_data (G_OBJECT (tree_view), I_("gtk-tree-view-drag-info"), NULL);
7157 }
7158
7159 #if 0
7160 static gint
7161 drag_scan_timeout (gpointer data)
7162 {
7163   GtkTreeView *tree_view;
7164   gint x, y;
7165   GdkModifierType state;
7166   GtkTreePath *path = NULL;
7167   GtkTreeViewColumn *column = NULL;
7168   GdkRectangle visible_rect;
7169
7170   GDK_THREADS_ENTER ();
7171
7172   tree_view = GTK_TREE_VIEW (data);
7173
7174   gdk_window_get_device_position (tree_view->priv->bin_window,
7175                                   gdk_device_manager_get_client_pointer (
7176                                     gdk_display_get_device_manager (
7177                                       gtk_widget_get_display (GTK_WIDGET (tree_view)))),
7178                                   &x, &y, &state);
7179
7180   gtk_tree_view_get_visible_rect (tree_view, &visible_rect);
7181
7182   /* See if we are near the edge. */
7183   if ((x - visible_rect.x) < SCROLL_EDGE_SIZE ||
7184       (visible_rect.x + visible_rect.width - x) < SCROLL_EDGE_SIZE ||
7185       (y - visible_rect.y) < SCROLL_EDGE_SIZE ||
7186       (visible_rect.y + visible_rect.height - y) < SCROLL_EDGE_SIZE)
7187     {
7188       gtk_tree_view_get_path_at_pos (tree_view,
7189                                      tree_view->priv->bin_window,
7190                                      x, y,
7191                                      &path,
7192                                      &column,
7193                                      NULL,
7194                                      NULL);
7195
7196       if (path != NULL)
7197         {
7198           gtk_tree_view_scroll_to_cell (tree_view,
7199                                         path,
7200                                         column,
7201                                         TRUE,
7202                                         0.5, 0.5);
7203
7204           gtk_tree_path_free (path);
7205         }
7206     }
7207
7208   GDK_THREADS_LEAVE ();
7209
7210   return TRUE;
7211 }
7212 #endif /* 0 */
7213
7214 static void
7215 add_scroll_timeout (GtkTreeView *tree_view)
7216 {
7217   if (tree_view->priv->scroll_timeout == 0)
7218     {
7219       tree_view->priv->scroll_timeout =
7220         gdk_threads_add_timeout (150, scroll_row_timeout, tree_view);
7221     }
7222 }
7223
7224 static void
7225 remove_scroll_timeout (GtkTreeView *tree_view)
7226 {
7227   if (tree_view->priv->scroll_timeout != 0)
7228     {
7229       g_source_remove (tree_view->priv->scroll_timeout);
7230       tree_view->priv->scroll_timeout = 0;
7231     }
7232 }
7233
7234 static gboolean
7235 check_model_dnd (GtkTreeModel *model,
7236                  GType         required_iface,
7237                  const gchar  *signal)
7238 {
7239   if (model == NULL || !G_TYPE_CHECK_INSTANCE_TYPE ((model), required_iface))
7240     {
7241       g_warning ("You must override the default '%s' handler "
7242                  "on GtkTreeView when using models that don't support "
7243                  "the %s interface and enabling drag-and-drop. The simplest way to do this "
7244                  "is to connect to '%s' and call "
7245                  "g_signal_stop_emission_by_name() in your signal handler to prevent "
7246                  "the default handler from running. Look at the source code "
7247                  "for the default handler in gtktreeview.c to get an idea what "
7248                  "your handler should do. (gtktreeview.c is in the GTK source "
7249                  "code.) If you're using GTK from a language other than C, "
7250                  "there may be a more natural way to override default handlers, e.g. via derivation.",
7251                  signal, g_type_name (required_iface), signal);
7252       return FALSE;
7253     }
7254   else
7255     return TRUE;
7256 }
7257
7258 static void
7259 remove_open_timeout (GtkTreeView *tree_view)
7260 {
7261   if (tree_view->priv->open_dest_timeout != 0)
7262     {
7263       g_source_remove (tree_view->priv->open_dest_timeout);
7264       tree_view->priv->open_dest_timeout = 0;
7265     }
7266 }
7267
7268
7269 static gint
7270 open_row_timeout (gpointer data)
7271 {
7272   GtkTreeView *tree_view = data;
7273   GtkTreePath *dest_path = NULL;
7274   GtkTreeViewDropPosition pos;
7275   gboolean result = FALSE;
7276
7277   gtk_tree_view_get_drag_dest_row (tree_view,
7278                                    &dest_path,
7279                                    &pos);
7280
7281   if (dest_path &&
7282       (pos == GTK_TREE_VIEW_DROP_INTO_OR_AFTER ||
7283        pos == GTK_TREE_VIEW_DROP_INTO_OR_BEFORE))
7284     {
7285       gtk_tree_view_expand_row (tree_view, dest_path, FALSE);
7286       tree_view->priv->open_dest_timeout = 0;
7287
7288       gtk_tree_path_free (dest_path);
7289     }
7290   else
7291     {
7292       if (dest_path)
7293         gtk_tree_path_free (dest_path);
7294
7295       result = TRUE;
7296     }
7297
7298   return result;
7299 }
7300
7301 static gboolean
7302 scroll_row_timeout (gpointer data)
7303 {
7304   GtkTreeView *tree_view = data;
7305
7306   gtk_tree_view_vertical_autoscroll (tree_view);
7307
7308   if (tree_view->priv->rubber_band_status == RUBBER_BAND_ACTIVE)
7309     gtk_tree_view_update_rubber_band (tree_view);
7310
7311   return TRUE;
7312 }
7313
7314 /* Returns TRUE if event should not be propagated to parent widgets */
7315 static gboolean
7316 set_destination_row (GtkTreeView    *tree_view,
7317                      GdkDragContext *context,
7318                      /* coordinates relative to the widget */
7319                      gint            x,
7320                      gint            y,
7321                      GdkDragAction  *suggested_action,
7322                      GdkAtom        *target)
7323 {
7324   GtkTreePath *path = NULL;
7325   GtkTreeViewDropPosition pos;
7326   GtkTreeViewDropPosition old_pos;
7327   TreeViewDragInfo *di;
7328   GtkWidget *widget;
7329   GtkTreePath *old_dest_path = NULL;
7330   gboolean can_drop = FALSE;
7331
7332   *suggested_action = 0;
7333   *target = GDK_NONE;
7334
7335   widget = GTK_WIDGET (tree_view);
7336
7337   di = get_info (tree_view);
7338
7339   if (di == NULL || y - gtk_tree_view_get_effective_header_height (tree_view) < 0)
7340     {
7341       /* someone unset us as a drag dest, note that if
7342        * we return FALSE drag_leave isn't called
7343        */
7344
7345       gtk_tree_view_set_drag_dest_row (tree_view,
7346                                        NULL,
7347                                        GTK_TREE_VIEW_DROP_BEFORE);
7348
7349       remove_scroll_timeout (GTK_TREE_VIEW (widget));
7350       remove_open_timeout (GTK_TREE_VIEW (widget));
7351
7352       return FALSE; /* no longer a drop site */
7353     }
7354
7355   *target = gtk_drag_dest_find_target (widget, context,
7356                                        gtk_drag_dest_get_target_list (widget));
7357   if (*target == GDK_NONE)
7358     {
7359       return FALSE;
7360     }
7361
7362   if (!gtk_tree_view_get_dest_row_at_pos (tree_view,
7363                                           x, y,
7364                                           &path,
7365                                           &pos))
7366     {
7367       gint n_children;
7368       GtkTreeModel *model;
7369
7370       remove_open_timeout (tree_view);
7371
7372       /* the row got dropped on empty space, let's setup a special case
7373        */
7374
7375       if (path)
7376         gtk_tree_path_free (path);
7377
7378       model = gtk_tree_view_get_model (tree_view);
7379
7380       n_children = gtk_tree_model_iter_n_children (model, NULL);
7381       if (n_children)
7382         {
7383           pos = GTK_TREE_VIEW_DROP_AFTER;
7384           path = gtk_tree_path_new_from_indices (n_children - 1, -1);
7385         }
7386       else
7387         {
7388           pos = GTK_TREE_VIEW_DROP_BEFORE;
7389           path = gtk_tree_path_new_from_indices (0, -1);
7390         }
7391
7392       can_drop = TRUE;
7393
7394       goto out;
7395     }
7396
7397   g_assert (path);
7398
7399   /* If we left the current row's "open" zone, unset the timeout for
7400    * opening the row
7401    */
7402   gtk_tree_view_get_drag_dest_row (tree_view,
7403                                    &old_dest_path,
7404                                    &old_pos);
7405
7406   if (old_dest_path &&
7407       (gtk_tree_path_compare (path, old_dest_path) != 0 ||
7408        !(pos == GTK_TREE_VIEW_DROP_INTO_OR_AFTER ||
7409          pos == GTK_TREE_VIEW_DROP_INTO_OR_BEFORE)))
7410     remove_open_timeout (tree_view);
7411
7412   if (old_dest_path)
7413     gtk_tree_path_free (old_dest_path);
7414
7415   if (TRUE /* FIXME if the location droppable predicate */)
7416     {
7417       can_drop = TRUE;
7418     }
7419
7420 out:
7421   if (can_drop)
7422     {
7423       GtkWidget *source_widget;
7424
7425       *suggested_action = gdk_drag_context_get_suggested_action (context);
7426       source_widget = gtk_drag_get_source_widget (context);
7427
7428       if (source_widget == widget)
7429         {
7430           /* Default to MOVE, unless the user has
7431            * pressed ctrl or shift to affect available actions
7432            */
7433           if ((gdk_drag_context_get_actions (context) & GDK_ACTION_MOVE) != 0)
7434             *suggested_action = GDK_ACTION_MOVE;
7435         }
7436
7437       gtk_tree_view_set_drag_dest_row (GTK_TREE_VIEW (widget),
7438                                        path, pos);
7439     }
7440   else
7441     {
7442       /* can't drop here */
7443       remove_open_timeout (tree_view);
7444
7445       gtk_tree_view_set_drag_dest_row (GTK_TREE_VIEW (widget),
7446                                        NULL,
7447                                        GTK_TREE_VIEW_DROP_BEFORE);
7448     }
7449
7450   if (path)
7451     gtk_tree_path_free (path);
7452
7453   return TRUE;
7454 }
7455
7456 static GtkTreePath*
7457 get_logical_dest_row (GtkTreeView *tree_view,
7458                       gboolean    *path_down_mode,
7459                       gboolean    *drop_append_mode)
7460 {
7461   /* adjust path to point to the row the drop goes in front of */
7462   GtkTreePath *path = NULL;
7463   GtkTreeViewDropPosition pos;
7464
7465   g_return_val_if_fail (path_down_mode != NULL, NULL);
7466   g_return_val_if_fail (drop_append_mode != NULL, NULL);
7467
7468   *path_down_mode = FALSE;
7469   *drop_append_mode = 0;
7470
7471   gtk_tree_view_get_drag_dest_row (tree_view, &path, &pos);
7472
7473   if (path == NULL)
7474     return NULL;
7475
7476   if (pos == GTK_TREE_VIEW_DROP_BEFORE)
7477     ; /* do nothing */
7478   else if (pos == GTK_TREE_VIEW_DROP_INTO_OR_BEFORE ||
7479            pos == GTK_TREE_VIEW_DROP_INTO_OR_AFTER)
7480     *path_down_mode = TRUE;
7481   else
7482     {
7483       GtkTreeIter iter;
7484       GtkTreeModel *model = gtk_tree_view_get_model (tree_view);
7485
7486       g_assert (pos == GTK_TREE_VIEW_DROP_AFTER);
7487
7488       if (!gtk_tree_model_get_iter (model, &iter, path) ||
7489           !gtk_tree_model_iter_next (model, &iter))
7490         *drop_append_mode = 1;
7491       else
7492         {
7493           *drop_append_mode = 0;
7494           gtk_tree_path_next (path);
7495         }
7496     }
7497
7498   return path;
7499 }
7500
7501 static gboolean
7502 gtk_tree_view_maybe_begin_dragging_row (GtkTreeView      *tree_view,
7503                                         GdkEventMotion   *event)
7504 {
7505   GtkWidget *widget = GTK_WIDGET (tree_view);
7506   GdkDragContext *context;
7507   TreeViewDragInfo *di;
7508   GtkTreePath *path = NULL;
7509   gint button;
7510   gint cell_x, cell_y;
7511   GtkTreeModel *model;
7512   gboolean retval = FALSE;
7513
7514   di = get_info (tree_view);
7515
7516   if (di == NULL || !di->source_set)
7517     goto out;
7518
7519   if (tree_view->priv->pressed_button < 0)
7520     goto out;
7521
7522   if (!gtk_drag_check_threshold (widget,
7523                                  tree_view->priv->press_start_x,
7524                                  tree_view->priv->press_start_y,
7525                                  event->x, event->y))
7526     goto out;
7527
7528   model = gtk_tree_view_get_model (tree_view);
7529
7530   if (model == NULL)
7531     goto out;
7532
7533   button = tree_view->priv->pressed_button;
7534   tree_view->priv->pressed_button = -1;
7535
7536   gtk_tree_view_get_path_at_pos (tree_view,
7537                                  tree_view->priv->press_start_x,
7538                                  tree_view->priv->press_start_y,
7539                                  &path,
7540                                  NULL,
7541                                  &cell_x,
7542                                  &cell_y);
7543
7544   if (path == NULL)
7545     goto out;
7546
7547   if (!GTK_IS_TREE_DRAG_SOURCE (model) ||
7548       !gtk_tree_drag_source_row_draggable (GTK_TREE_DRAG_SOURCE (model),
7549                                            path))
7550     goto out;
7551
7552   if (!(GDK_BUTTON1_MASK << (button - 1) & di->start_button_mask))
7553     goto out;
7554
7555   /* Now we can begin the drag */
7556
7557   retval = TRUE;
7558
7559   context = gtk_drag_begin (widget,
7560                             gtk_drag_source_get_target_list (widget),
7561                             di->source_actions,
7562                             button,
7563                             (GdkEvent*)event);
7564
7565   set_source_row (context, model, path);
7566
7567  out:
7568   if (path)
7569     gtk_tree_path_free (path);
7570
7571   return retval;
7572 }
7573
7574
7575 static void
7576 gtk_tree_view_drag_begin (GtkWidget      *widget,
7577                           GdkDragContext *context)
7578 {
7579   GtkTreeView *tree_view;
7580   GtkTreePath *path = NULL;
7581   gint cell_x, cell_y;
7582   cairo_surface_t *row_pix;
7583   TreeViewDragInfo *di;
7584
7585   tree_view = GTK_TREE_VIEW (widget);
7586
7587   /* if the user uses a custom DND source impl, we don't set the icon here */
7588   di = get_info (tree_view);
7589
7590   if (di == NULL || !di->source_set)
7591     return;
7592
7593   gtk_tree_view_get_path_at_pos (tree_view,
7594                                  tree_view->priv->press_start_x,
7595                                  tree_view->priv->press_start_y,
7596                                  &path,
7597                                  NULL,
7598                                  &cell_x,
7599                                  &cell_y);
7600
7601   /* If path is NULL, there's nothing we can drag.  For now, we silently
7602    * bail out.  Actually, dragging should not be possible from an empty
7603    * tree view, but there's no way we can cancel that from here.
7604    * Automatically unsetting the tree view as drag source for empty models
7605    * is something that would likely break other people's code ...
7606    */
7607   if (!path)
7608     return;
7609
7610   row_pix = gtk_tree_view_create_row_drag_icon (tree_view,
7611                                                 path);
7612   cairo_surface_set_device_offset (row_pix,
7613                                    /* the + 1 is for the black border in the icon */
7614                                    - (tree_view->priv->press_start_x + 1),
7615                                    - (cell_y + 1));
7616
7617   gtk_drag_set_icon_surface (context, row_pix);
7618
7619   cairo_surface_destroy (row_pix);
7620   gtk_tree_path_free (path);
7621 }
7622
7623 static void
7624 gtk_tree_view_drag_end (GtkWidget      *widget,
7625                         GdkDragContext *context)
7626 {
7627   /* do nothing */
7628 }
7629
7630 /* Default signal implementations for the drag signals */
7631 static void
7632 gtk_tree_view_drag_data_get (GtkWidget        *widget,
7633                              GdkDragContext   *context,
7634                              GtkSelectionData *selection_data,
7635                              guint             info,
7636                              guint             time)
7637 {
7638   GtkTreeView *tree_view;
7639   GtkTreeModel *model;
7640   TreeViewDragInfo *di;
7641   GtkTreePath *source_row;
7642
7643   tree_view = GTK_TREE_VIEW (widget);
7644
7645   model = gtk_tree_view_get_model (tree_view);
7646
7647   if (model == NULL)
7648     return;
7649
7650   di = get_info (GTK_TREE_VIEW (widget));
7651
7652   if (di == NULL)
7653     return;
7654
7655   source_row = get_source_row (context);
7656
7657   if (source_row == NULL)
7658     return;
7659
7660   /* We can implement the GTK_TREE_MODEL_ROW target generically for
7661    * any model; for DragSource models there are some other targets
7662    * we also support.
7663    */
7664
7665   if (GTK_IS_TREE_DRAG_SOURCE (model) &&
7666       gtk_tree_drag_source_drag_data_get (GTK_TREE_DRAG_SOURCE (model),
7667                                           source_row,
7668                                           selection_data))
7669     goto done;
7670
7671   /* If drag_data_get does nothing, try providing row data. */
7672   if (gtk_selection_data_get_target (selection_data) == gdk_atom_intern_static_string ("GTK_TREE_MODEL_ROW"))
7673     {
7674       gtk_tree_set_row_drag_data (selection_data,
7675                                   model,
7676                                   source_row);
7677     }
7678
7679  done:
7680   gtk_tree_path_free (source_row);
7681 }
7682
7683
7684 static void
7685 gtk_tree_view_drag_data_delete (GtkWidget      *widget,
7686                                 GdkDragContext *context)
7687 {
7688   TreeViewDragInfo *di;
7689   GtkTreeModel *model;
7690   GtkTreeView *tree_view;
7691   GtkTreePath *source_row;
7692
7693   tree_view = GTK_TREE_VIEW (widget);
7694   model = gtk_tree_view_get_model (tree_view);
7695
7696   if (!check_model_dnd (model, GTK_TYPE_TREE_DRAG_SOURCE, "drag_data_delete"))
7697     return;
7698
7699   di = get_info (tree_view);
7700
7701   if (di == NULL)
7702     return;
7703
7704   source_row = get_source_row (context);
7705
7706   if (source_row == NULL)
7707     return;
7708
7709   gtk_tree_drag_source_drag_data_delete (GTK_TREE_DRAG_SOURCE (model),
7710                                          source_row);
7711
7712   gtk_tree_path_free (source_row);
7713
7714   set_source_row (context, NULL, NULL);
7715 }
7716
7717 static void
7718 gtk_tree_view_drag_leave (GtkWidget      *widget,
7719                           GdkDragContext *context,
7720                           guint             time)
7721 {
7722   /* unset any highlight row */
7723   gtk_tree_view_set_drag_dest_row (GTK_TREE_VIEW (widget),
7724                                    NULL,
7725                                    GTK_TREE_VIEW_DROP_BEFORE);
7726
7727   remove_scroll_timeout (GTK_TREE_VIEW (widget));
7728   remove_open_timeout (GTK_TREE_VIEW (widget));
7729 }
7730
7731
7732 static gboolean
7733 gtk_tree_view_drag_motion (GtkWidget        *widget,
7734                            GdkDragContext   *context,
7735                            /* coordinates relative to the widget */
7736                            gint              x,
7737                            gint              y,
7738                            guint             time)
7739 {
7740   gboolean empty;
7741   GtkTreePath *path = NULL;
7742   GtkTreeViewDropPosition pos;
7743   GtkTreeView *tree_view;
7744   GdkDragAction suggested_action = 0;
7745   GdkAtom target;
7746
7747   tree_view = GTK_TREE_VIEW (widget);
7748
7749   if (!set_destination_row (tree_view, context, x, y, &suggested_action, &target))
7750     return FALSE;
7751
7752   gtk_tree_view_get_drag_dest_row (tree_view, &path, &pos);
7753
7754   /* we only know this *after* set_desination_row */
7755   empty = tree_view->priv->empty_view_drop;
7756
7757   if (path == NULL && !empty)
7758     {
7759       /* Can't drop here. */
7760       gdk_drag_status (context, 0, time);
7761     }
7762   else
7763     {
7764       if (tree_view->priv->open_dest_timeout == 0 &&
7765           (pos == GTK_TREE_VIEW_DROP_INTO_OR_AFTER ||
7766            pos == GTK_TREE_VIEW_DROP_INTO_OR_BEFORE))
7767         {
7768           tree_view->priv->open_dest_timeout =
7769             gdk_threads_add_timeout (AUTO_EXPAND_TIMEOUT, open_row_timeout, tree_view);
7770         }
7771       else
7772         {
7773           add_scroll_timeout (tree_view);
7774         }
7775
7776       if (target == gdk_atom_intern_static_string ("GTK_TREE_MODEL_ROW"))
7777         {
7778           /* Request data so we can use the source row when
7779            * determining whether to accept the drop
7780            */
7781           set_status_pending (context, suggested_action);
7782           gtk_drag_get_data (widget, context, target, time);
7783         }
7784       else
7785         {
7786           set_status_pending (context, 0);
7787           gdk_drag_status (context, suggested_action, time);
7788         }
7789     }
7790
7791   if (path)
7792     gtk_tree_path_free (path);
7793
7794   return TRUE;
7795 }
7796
7797
7798 static gboolean
7799 gtk_tree_view_drag_drop (GtkWidget        *widget,
7800                          GdkDragContext   *context,
7801                          /* coordinates relative to the widget */
7802                          gint              x,
7803                          gint              y,
7804                          guint             time)
7805 {
7806   GtkTreeView *tree_view;
7807   GtkTreePath *path;
7808   GdkDragAction suggested_action = 0;
7809   GdkAtom target = GDK_NONE;
7810   TreeViewDragInfo *di;
7811   GtkTreeModel *model;
7812   gboolean path_down_mode;
7813   gboolean drop_append_mode;
7814
7815   tree_view = GTK_TREE_VIEW (widget);
7816
7817   model = gtk_tree_view_get_model (tree_view);
7818
7819   remove_scroll_timeout (GTK_TREE_VIEW (widget));
7820   remove_open_timeout (GTK_TREE_VIEW (widget));
7821
7822   di = get_info (tree_view);
7823
7824   if (di == NULL)
7825     return FALSE;
7826
7827   if (!check_model_dnd (model, GTK_TYPE_TREE_DRAG_DEST, "drag_drop"))
7828     return FALSE;
7829
7830   if (!set_destination_row (tree_view, context, x, y, &suggested_action, &target))
7831     return FALSE;
7832
7833   path = get_logical_dest_row (tree_view, &path_down_mode, &drop_append_mode);
7834
7835   if (target != GDK_NONE && path != NULL)
7836     {
7837       /* in case a motion had requested drag data, change things so we
7838        * treat drag data receives as a drop.
7839        */
7840       set_status_pending (context, 0);
7841       set_dest_row (context, model, path,
7842                     path_down_mode, tree_view->priv->empty_view_drop,
7843                     drop_append_mode);
7844     }
7845
7846   if (path)
7847     gtk_tree_path_free (path);
7848
7849   /* Unset this thing */
7850   gtk_tree_view_set_drag_dest_row (GTK_TREE_VIEW (widget),
7851                                    NULL,
7852                                    GTK_TREE_VIEW_DROP_BEFORE);
7853
7854   if (target != GDK_NONE)
7855     {
7856       gtk_drag_get_data (widget, context, target, time);
7857       return TRUE;
7858     }
7859   else
7860     return FALSE;
7861 }
7862
7863 static void
7864 gtk_tree_view_drag_data_received (GtkWidget        *widget,
7865                                   GdkDragContext   *context,
7866                                   /* coordinates relative to the widget */
7867                                   gint              x,
7868                                   gint              y,
7869                                   GtkSelectionData *selection_data,
7870                                   guint             info,
7871                                   guint             time)
7872 {
7873   GtkTreePath *path;
7874   TreeViewDragInfo *di;
7875   gboolean accepted = FALSE;
7876   GtkTreeModel *model;
7877   GtkTreeView *tree_view;
7878   GtkTreePath *dest_row;
7879   GdkDragAction suggested_action;
7880   gboolean path_down_mode;
7881   gboolean drop_append_mode;
7882
7883   tree_view = GTK_TREE_VIEW (widget);
7884
7885   model = gtk_tree_view_get_model (tree_view);
7886
7887   if (!check_model_dnd (model, GTK_TYPE_TREE_DRAG_DEST, "drag_data_received"))
7888     return;
7889
7890   di = get_info (tree_view);
7891
7892   if (di == NULL)
7893     return;
7894
7895   suggested_action = get_status_pending (context);
7896
7897   if (suggested_action)
7898     {
7899       /* We are getting this data due to a request in drag_motion,
7900        * rather than due to a request in drag_drop, so we are just
7901        * supposed to call drag_status, not actually paste in the
7902        * data.
7903        */
7904       path = get_logical_dest_row (tree_view, &path_down_mode,
7905                                    &drop_append_mode);
7906
7907       if (path == NULL)
7908         suggested_action = 0;
7909       else if (path_down_mode)
7910         gtk_tree_path_down (path);
7911
7912       if (suggested_action)
7913         {
7914           if (!gtk_tree_drag_dest_row_drop_possible (GTK_TREE_DRAG_DEST (model),
7915                                                      path,
7916                                                      selection_data))
7917             {
7918               if (path_down_mode)
7919                 {
7920                   path_down_mode = FALSE;
7921                   gtk_tree_path_up (path);
7922
7923                   if (!gtk_tree_drag_dest_row_drop_possible (GTK_TREE_DRAG_DEST (model),
7924                                                              path,
7925                                                              selection_data))
7926                     suggested_action = 0;
7927                 }
7928               else
7929                 suggested_action = 0;
7930             }
7931         }
7932
7933       gdk_drag_status (context, suggested_action, time);
7934
7935       if (path)
7936         gtk_tree_path_free (path);
7937
7938       /* If you can't drop, remove user drop indicator until the next motion */
7939       if (suggested_action == 0)
7940         gtk_tree_view_set_drag_dest_row (GTK_TREE_VIEW (widget),
7941                                          NULL,
7942                                          GTK_TREE_VIEW_DROP_BEFORE);
7943
7944       return;
7945     }
7946
7947   dest_row = get_dest_row (context, &path_down_mode);
7948
7949   if (dest_row == NULL)
7950     return;
7951
7952   if (gtk_selection_data_get_length (selection_data) >= 0)
7953     {
7954       if (path_down_mode)
7955         {
7956           gtk_tree_path_down (dest_row);
7957           if (!gtk_tree_drag_dest_row_drop_possible (GTK_TREE_DRAG_DEST (model),
7958                                                      dest_row, selection_data))
7959             gtk_tree_path_up (dest_row);
7960         }
7961     }
7962
7963   if (gtk_selection_data_get_length (selection_data) >= 0)
7964     {
7965       if (gtk_tree_drag_dest_drag_data_received (GTK_TREE_DRAG_DEST (model),
7966                                                  dest_row,
7967                                                  selection_data))
7968         accepted = TRUE;
7969     }
7970
7971   gtk_drag_finish (context,
7972                    accepted,
7973                    (gdk_drag_context_get_selected_action (context) == GDK_ACTION_MOVE),
7974                    time);
7975
7976   if (gtk_tree_path_get_depth (dest_row) == 1 &&
7977       gtk_tree_path_get_indices (dest_row)[0] == 0 &&
7978       gtk_tree_model_iter_n_children (tree_view->priv->model, NULL) != 0)
7979     {
7980       /* special special case drag to "0", scroll to first item */
7981       if (!tree_view->priv->scroll_to_path)
7982         gtk_tree_view_scroll_to_cell (tree_view, dest_row, NULL, FALSE, 0.0, 0.0);
7983     }
7984
7985   gtk_tree_path_free (dest_row);
7986
7987   /* drop dest_row */
7988   set_dest_row (context, NULL, NULL, FALSE, FALSE, FALSE);
7989 }
7990
7991
7992
7993 /* GtkContainer Methods
7994  */
7995
7996
7997 static void
7998 gtk_tree_view_remove (GtkContainer *container,
7999                       GtkWidget    *widget)
8000 {
8001   GtkTreeView *tree_view = GTK_TREE_VIEW (container);
8002   GtkTreeViewChild *child = NULL;
8003   GList *tmp_list;
8004
8005   tmp_list = tree_view->priv->children;
8006   while (tmp_list)
8007     {
8008       child = tmp_list->data;
8009       if (child->widget == widget)
8010         {
8011           gtk_widget_unparent (widget);
8012
8013           tree_view->priv->children = g_list_remove_link (tree_view->priv->children, tmp_list);
8014           g_list_free_1 (tmp_list);
8015           g_slice_free (GtkTreeViewChild, child);
8016           return;
8017         }
8018
8019       tmp_list = tmp_list->next;
8020     }
8021
8022   tmp_list = tree_view->priv->columns;
8023
8024   while (tmp_list)
8025     {
8026       GtkTreeViewColumn *column;
8027       GtkWidget         *button;
8028
8029       column = tmp_list->data;
8030       button = gtk_tree_view_column_get_button (column);
8031
8032       if (button == widget)
8033         {
8034           gtk_widget_unparent (widget);
8035           return;
8036         }
8037       tmp_list = tmp_list->next;
8038     }
8039 }
8040
8041 static void
8042 gtk_tree_view_forall (GtkContainer *container,
8043                       gboolean      include_internals,
8044                       GtkCallback   callback,
8045                       gpointer      callback_data)
8046 {
8047   GtkTreeView *tree_view = GTK_TREE_VIEW (container);
8048   GtkTreeViewChild *child = NULL;
8049   GtkTreeViewColumn *column;
8050   GtkWidget *button;
8051   GList *tmp_list;
8052
8053   tmp_list = tree_view->priv->children;
8054   while (tmp_list)
8055     {
8056       child = tmp_list->data;
8057       tmp_list = tmp_list->next;
8058
8059       (* callback) (child->widget, callback_data);
8060     }
8061   if (include_internals == FALSE)
8062     return;
8063
8064   for (tmp_list = tree_view->priv->columns; tmp_list; tmp_list = tmp_list->next)
8065     {
8066       column = tmp_list->data;
8067       button = gtk_tree_view_column_get_button (column);
8068
8069       if (button)
8070         (* callback) (button, callback_data);
8071     }
8072 }
8073
8074 /* Returns TRUE is any of the columns contains a cell that can-focus.
8075  * If this is not the case, a column-spanning focus rectangle will be
8076  * drawn.
8077  */
8078 static gboolean
8079 gtk_tree_view_has_can_focus_cell (GtkTreeView *tree_view)
8080 {
8081   GList *list;
8082
8083   for (list = tree_view->priv->columns; list; list = list->next)
8084     {
8085       GtkTreeViewColumn *column = list->data;
8086
8087       if (!gtk_tree_view_column_get_visible (column))
8088         continue;
8089       if (gtk_cell_area_is_activatable (gtk_cell_layout_get_area (GTK_CELL_LAYOUT (column))))
8090         return TRUE;
8091     }
8092
8093   return FALSE;
8094 }
8095
8096 static void
8097 column_sizing_notify (GObject    *object,
8098                       GParamSpec *pspec,
8099                       gpointer    data)
8100 {
8101   GtkTreeViewColumn *c = GTK_TREE_VIEW_COLUMN (object);
8102
8103   if (gtk_tree_view_column_get_sizing (c) != GTK_TREE_VIEW_COLUMN_FIXED)
8104     /* disable fixed height mode */
8105     g_object_set (data, "fixed-height-mode", FALSE, NULL);
8106 }
8107
8108 /**
8109  * gtk_tree_view_set_fixed_height_mode:
8110  * @tree_view: a #GtkTreeView
8111  * @enable: %TRUE to enable fixed height mode
8112  *
8113  * Enables or disables the fixed height mode of @tree_view.
8114  * Fixed height mode speeds up #GtkTreeView by assuming that all
8115  * rows have the same height.
8116  * Only enable this option if all rows are the same height and all
8117  * columns are of type %GTK_TREE_VIEW_COLUMN_FIXED.
8118  *
8119  * Since: 2.6
8120  **/
8121 void
8122 gtk_tree_view_set_fixed_height_mode (GtkTreeView *tree_view,
8123                                      gboolean     enable)
8124 {
8125   GList *l;
8126
8127   enable = enable != FALSE;
8128
8129   if (enable == tree_view->priv->fixed_height_mode)
8130     return;
8131
8132   if (!enable)
8133     {
8134       tree_view->priv->fixed_height_mode = 0;
8135       tree_view->priv->fixed_height = -1;
8136
8137       /* force a revalidation */
8138       install_presize_handler (tree_view);
8139     }
8140   else
8141     {
8142       /* make sure all columns are of type FIXED */
8143       for (l = tree_view->priv->columns; l; l = l->next)
8144         {
8145           GtkTreeViewColumn *c = l->data;
8146
8147           g_return_if_fail (gtk_tree_view_column_get_sizing (c) == GTK_TREE_VIEW_COLUMN_FIXED);
8148         }
8149
8150       /* yes, we really have to do this is in a separate loop */
8151       for (l = tree_view->priv->columns; l; l = l->next)
8152         g_signal_connect (l->data, "notify::sizing",
8153                           G_CALLBACK (column_sizing_notify), tree_view);
8154
8155       tree_view->priv->fixed_height_mode = 1;
8156       tree_view->priv->fixed_height = -1;
8157
8158       if (tree_view->priv->tree)
8159         initialize_fixed_height_mode (tree_view);
8160     }
8161
8162   g_object_notify (G_OBJECT (tree_view), "fixed-height-mode");
8163 }
8164
8165 /**
8166  * gtk_tree_view_get_fixed_height_mode:
8167  * @tree_view: a #GtkTreeView
8168  *
8169  * Returns whether fixed height mode is turned on for @tree_view.
8170  *
8171  * Return value: %TRUE if @tree_view is in fixed height mode
8172  *
8173  * Since: 2.6
8174  **/
8175 gboolean
8176 gtk_tree_view_get_fixed_height_mode (GtkTreeView *tree_view)
8177 {
8178   return tree_view->priv->fixed_height_mode;
8179 }
8180
8181 /* Returns TRUE if the focus is within the headers, after the focus operation is
8182  * done
8183  */
8184 static gboolean
8185 gtk_tree_view_header_focus (GtkTreeView      *tree_view,
8186                             GtkDirectionType  dir,
8187                             gboolean          clamp_column_visible)
8188 {
8189   GtkTreeViewColumn *column;
8190   GtkWidget *focus_child;
8191   GtkWidget *button;
8192   GList *last_column, *first_column;
8193   GList *tmp_list;
8194   gboolean rtl;
8195
8196   if (! tree_view->priv->headers_visible)
8197     return FALSE;
8198
8199   focus_child = gtk_container_get_focus_child (GTK_CONTAINER (tree_view));
8200
8201   first_column = tree_view->priv->columns;
8202   while (first_column)
8203     {
8204       column = GTK_TREE_VIEW_COLUMN (first_column->data);
8205       button = gtk_tree_view_column_get_button (column);
8206
8207       if (gtk_widget_get_can_focus (button) &&
8208           gtk_tree_view_column_get_visible (column) &&
8209           (gtk_tree_view_column_get_clickable (column) ||
8210            gtk_tree_view_column_get_reorderable (column)))
8211         break;
8212       first_column = first_column->next;
8213     }
8214
8215   /* No headers are visible, or are focusable.  We can't focus in or out.
8216    */
8217   if (first_column == NULL)
8218     return FALSE;
8219
8220   last_column = g_list_last (tree_view->priv->columns);
8221   while (last_column)
8222     {
8223       column = GTK_TREE_VIEW_COLUMN (last_column->data);
8224       button = gtk_tree_view_column_get_button (column);
8225
8226       if (gtk_widget_get_can_focus (button) &&
8227           gtk_tree_view_column_get_visible (column) &&
8228           (gtk_tree_view_column_get_clickable (column) ||
8229            gtk_tree_view_column_get_reorderable (column)))
8230         break;
8231       last_column = last_column->prev;
8232     }
8233
8234
8235   rtl = (gtk_widget_get_direction (GTK_WIDGET (tree_view)) == GTK_TEXT_DIR_RTL);
8236
8237   switch (dir)
8238     {
8239     case GTK_DIR_TAB_BACKWARD:
8240     case GTK_DIR_TAB_FORWARD:
8241     case GTK_DIR_UP:
8242     case GTK_DIR_DOWN:
8243       if (focus_child == NULL)
8244         {
8245           if (tree_view->priv->focus_column != NULL)
8246             button = gtk_tree_view_column_get_button (tree_view->priv->focus_column);
8247           else
8248             button = NULL;
8249
8250           if (button && gtk_widget_get_can_focus (button))
8251             focus_child = button;
8252           else
8253             focus_child = gtk_tree_view_column_get_button (GTK_TREE_VIEW_COLUMN (first_column->data));
8254
8255           gtk_widget_grab_focus (focus_child);
8256           break;
8257         }
8258       return FALSE;
8259
8260     case GTK_DIR_LEFT:
8261     case GTK_DIR_RIGHT:
8262       if (focus_child == NULL)
8263         {
8264           if (tree_view->priv->focus_column != NULL)
8265             focus_child = gtk_tree_view_column_get_button (tree_view->priv->focus_column);
8266           else if (dir == GTK_DIR_LEFT)
8267             focus_child = gtk_tree_view_column_get_button (GTK_TREE_VIEW_COLUMN (last_column->data));
8268           else
8269             focus_child = gtk_tree_view_column_get_button (GTK_TREE_VIEW_COLUMN (first_column->data));
8270
8271           gtk_widget_grab_focus (focus_child);
8272           break;
8273         }
8274
8275       if (gtk_widget_child_focus (focus_child, dir))
8276         {
8277           /* The focus moves inside the button. */
8278           /* This is probably a great example of bad UI */
8279           break;
8280         }
8281
8282       /* We need to move the focus among the row of buttons. */
8283       for (tmp_list = tree_view->priv->columns; tmp_list; tmp_list = tmp_list->next)
8284         if (gtk_tree_view_column_get_button (GTK_TREE_VIEW_COLUMN (tmp_list->data)) == focus_child)
8285           break;
8286
8287       if ((tmp_list == first_column && dir == (rtl ? GTK_DIR_RIGHT : GTK_DIR_LEFT))
8288           || (tmp_list == last_column && dir == (rtl ? GTK_DIR_LEFT : GTK_DIR_RIGHT)))
8289         {
8290           gtk_widget_error_bell (GTK_WIDGET (tree_view));
8291           break;
8292         }
8293
8294       while (tmp_list)
8295         {
8296           GtkTreeViewColumn *column;
8297           GtkWidget         *button;
8298
8299           if (dir == (rtl ? GTK_DIR_LEFT : GTK_DIR_RIGHT))
8300             tmp_list = tmp_list->next;
8301           else
8302             tmp_list = tmp_list->prev;
8303
8304           if (tmp_list == NULL)
8305             {
8306               g_warning ("Internal button not found");
8307               break;
8308             }
8309           column = tmp_list->data;
8310           button = gtk_tree_view_column_get_button (column);
8311           if (button &&
8312               gtk_tree_view_column_get_visible (column) &&
8313               gtk_widget_get_can_focus (button))
8314             {
8315               focus_child = button;
8316               gtk_widget_grab_focus (button);
8317               break;
8318             }
8319         }
8320       break;
8321     default:
8322       g_assert_not_reached ();
8323       break;
8324     }
8325
8326   /* if focus child is non-null, we assume it's been set to the current focus child
8327    */
8328   if (focus_child)
8329     {
8330       for (tmp_list = tree_view->priv->columns; tmp_list; tmp_list = tmp_list->next)
8331         if (gtk_tree_view_column_get_button (GTK_TREE_VIEW_COLUMN (tmp_list->data)) == focus_child)
8332           {
8333             tree_view->priv->focus_column = GTK_TREE_VIEW_COLUMN (tmp_list->data);
8334             break;
8335           }
8336
8337       if (clamp_column_visible)
8338         {
8339           gtk_tree_view_clamp_column_visible (tree_view,
8340                                               tree_view->priv->focus_column,
8341                                               FALSE);
8342         }
8343     }
8344
8345   return (focus_child != NULL);
8346 }
8347
8348 /* This function returns in 'path' the first focusable path, if the given path
8349  * is already focusable, it's the returned one.
8350  */
8351 static gboolean
8352 search_first_focusable_path (GtkTreeView  *tree_view,
8353                              GtkTreePath **path,
8354                              gboolean      search_forward,
8355                              GtkRBTree   **new_tree,
8356                              GtkRBNode   **new_node)
8357 {
8358   GtkRBTree *tree = NULL;
8359   GtkRBNode *node = NULL;
8360
8361   if (!path || !*path)
8362     return FALSE;
8363
8364   _gtk_tree_view_find_node (tree_view, *path, &tree, &node);
8365
8366   if (!tree || !node)
8367     return FALSE;
8368
8369   while (node && row_is_separator (tree_view, NULL, *path))
8370     {
8371       if (search_forward)
8372         _gtk_rbtree_next_full (tree, node, &tree, &node);
8373       else
8374         _gtk_rbtree_prev_full (tree, node, &tree, &node);
8375
8376       if (*path)
8377         gtk_tree_path_free (*path);
8378
8379       if (node)
8380         *path = _gtk_tree_path_new_from_rbtree (tree, node);
8381       else
8382         *path = NULL;
8383     }
8384
8385   if (new_tree)
8386     *new_tree = tree;
8387
8388   if (new_node)
8389     *new_node = node;
8390
8391   return (*path != NULL);
8392 }
8393
8394 static gint
8395 gtk_tree_view_focus (GtkWidget        *widget,
8396                      GtkDirectionType  direction)
8397 {
8398   GtkTreeView *tree_view = GTK_TREE_VIEW (widget);
8399   GtkContainer *container = GTK_CONTAINER (widget);
8400   GtkWidget *focus_child;
8401
8402   if (!gtk_widget_is_sensitive (widget) || !gtk_widget_get_can_focus (widget))
8403     return FALSE;
8404
8405   focus_child = gtk_container_get_focus_child (container);
8406
8407   gtk_tree_view_stop_editing (GTK_TREE_VIEW (widget), FALSE);
8408   /* Case 1.  Headers currently have focus. */
8409   if (focus_child)
8410     {
8411       switch (direction)
8412         {
8413         case GTK_DIR_LEFT:
8414         case GTK_DIR_RIGHT:
8415           gtk_tree_view_header_focus (tree_view, direction, TRUE);
8416           return TRUE;
8417         case GTK_DIR_TAB_BACKWARD:
8418         case GTK_DIR_UP:
8419           return FALSE;
8420         case GTK_DIR_TAB_FORWARD:
8421         case GTK_DIR_DOWN:
8422           gtk_widget_grab_focus (widget);
8423           return TRUE;
8424         default:
8425           g_assert_not_reached ();
8426           return FALSE;
8427         }
8428     }
8429
8430   /* Case 2. We don't have focus at all. */
8431   if (!gtk_widget_has_focus (widget))
8432     {
8433       gtk_widget_grab_focus (widget);
8434       return TRUE;
8435     }
8436
8437   /* Case 3. We have focus already. */
8438   if (direction == GTK_DIR_TAB_BACKWARD)
8439     return (gtk_tree_view_header_focus (tree_view, direction, FALSE));
8440   else if (direction == GTK_DIR_TAB_FORWARD)
8441     return FALSE;
8442
8443   /* Other directions caught by the keybindings */
8444   gtk_widget_grab_focus (widget);
8445   return TRUE;
8446 }
8447
8448 static void
8449 gtk_tree_view_grab_focus (GtkWidget *widget)
8450 {
8451   GTK_WIDGET_CLASS (gtk_tree_view_parent_class)->grab_focus (widget);
8452
8453   gtk_tree_view_focus_to_cursor (GTK_TREE_VIEW (widget));
8454 }
8455
8456 static void
8457 gtk_tree_view_style_updated (GtkWidget *widget)
8458 {
8459   GtkTreeView *tree_view = GTK_TREE_VIEW (widget);
8460   GList *list;
8461   GtkTreeViewColumn *column;
8462
8463   GTK_WIDGET_CLASS (gtk_tree_view_parent_class)->style_updated (widget);
8464
8465   if (gtk_widget_get_realized (widget))
8466     {
8467       gtk_tree_view_ensure_background (tree_view);
8468
8469       gtk_tree_view_set_grid_lines (tree_view, tree_view->priv->grid_lines);
8470       gtk_tree_view_set_enable_tree_lines (tree_view, tree_view->priv->tree_lines_enabled);
8471     }
8472
8473   gtk_widget_style_get (widget,
8474                         "expander-size", &tree_view->priv->expander_size,
8475                         NULL);
8476   tree_view->priv->expander_size += EXPANDER_EXTRA_PADDING;
8477
8478   for (list = tree_view->priv->columns; list; list = list->next)
8479     {
8480       column = list->data;
8481       _gtk_tree_view_column_cell_set_dirty (column, TRUE);
8482     }
8483
8484   tree_view->priv->fixed_height = -1;
8485   _gtk_rbtree_mark_invalid (tree_view->priv->tree);
8486
8487   gtk_widget_queue_resize (widget);
8488 }
8489
8490
8491 static void
8492 gtk_tree_view_set_focus_child (GtkContainer *container,
8493                                GtkWidget    *child)
8494 {
8495   GtkTreeView *tree_view = GTK_TREE_VIEW (container);
8496   GList *list;
8497
8498   for (list = tree_view->priv->columns; list; list = list->next)
8499     {
8500       if (gtk_tree_view_column_get_button (GTK_TREE_VIEW_COLUMN (list->data)) == child)
8501         {
8502           tree_view->priv->focus_column = GTK_TREE_VIEW_COLUMN (list->data);
8503           break;
8504         }
8505     }
8506
8507   GTK_CONTAINER_CLASS (gtk_tree_view_parent_class)->set_focus_child (container, child);
8508 }
8509
8510 static GtkWidgetPath *
8511 gtk_tree_view_get_path_for_child (GtkContainer *container,
8512                                   GtkWidget    *child)
8513 {
8514   GtkTreeView *tree_view = GTK_TREE_VIEW (container);
8515   GtkWidgetPath *path;
8516   gboolean rtl;
8517   GList *list;
8518   gint n_col = 0;
8519
8520   path = GTK_CONTAINER_CLASS (gtk_tree_view_parent_class)->get_path_for_child (container, child);
8521   rtl = (gtk_widget_get_direction (GTK_WIDGET (container)) == GTK_TEXT_DIR_RTL);
8522
8523   for (list = (rtl ? g_list_last (tree_view->priv->columns) : g_list_first (tree_view->priv->columns));
8524        list;
8525        list = (rtl ? list->prev : list->next))
8526     {
8527       GtkTreeViewColumn *column = list->data;
8528       GtkRegionFlags flags = 0;
8529
8530       if (!gtk_tree_view_column_get_visible (column))
8531         continue;
8532
8533       n_col++;
8534
8535       if (gtk_tree_view_column_get_widget (column) != child &&
8536           gtk_tree_view_column_get_button (column) != child)
8537         continue;
8538
8539       if ((n_col % 2) == 0)
8540         flags |= GTK_REGION_EVEN;
8541       else
8542         flags |= GTK_REGION_ODD;
8543
8544       if (n_col == 1)
8545         flags |= GTK_REGION_FIRST;
8546
8547       if ((rtl && !list->prev) ||
8548           (!rtl && !list->next))
8549         flags |= GTK_REGION_LAST;
8550
8551       gtk_widget_path_iter_add_region (path, -1, GTK_STYLE_REGION_COLUMN_HEADER, flags);
8552       break;
8553     }
8554
8555   gtk_widget_path_append_for_widget (path, child);
8556
8557   return path;
8558 }
8559
8560 static gboolean
8561 gtk_tree_view_real_move_cursor (GtkTreeView       *tree_view,
8562                                 GtkMovementStep    step,
8563                                 gint               count)
8564 {
8565   GdkModifierType state;
8566
8567   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), FALSE);
8568   g_return_val_if_fail (step == GTK_MOVEMENT_LOGICAL_POSITIONS ||
8569                         step == GTK_MOVEMENT_VISUAL_POSITIONS ||
8570                         step == GTK_MOVEMENT_DISPLAY_LINES ||
8571                         step == GTK_MOVEMENT_PAGES ||
8572                         step == GTK_MOVEMENT_BUFFER_ENDS, FALSE);
8573
8574   if (tree_view->priv->tree == NULL)
8575     return FALSE;
8576   if (!gtk_widget_has_focus (GTK_WIDGET (tree_view)))
8577     return FALSE;
8578
8579   gtk_tree_view_stop_editing (tree_view, FALSE);
8580   tree_view->priv->draw_keyfocus = TRUE;
8581   gtk_widget_grab_focus (GTK_WIDGET (tree_view));
8582
8583   if (gtk_get_current_event_state (&state))
8584     {
8585       GdkModifierType extend_mod_mask;
8586       GdkModifierType modify_mod_mask;
8587
8588       extend_mod_mask =
8589         gtk_widget_get_modifier_mask (GTK_WIDGET (tree_view),
8590                                       GDK_MODIFIER_INTENT_EXTEND_SELECTION);
8591
8592       modify_mod_mask =
8593         gtk_widget_get_modifier_mask (GTK_WIDGET (tree_view),
8594                                       GDK_MODIFIER_INTENT_MODIFY_SELECTION);
8595
8596       if ((state & modify_mod_mask) == modify_mod_mask)
8597         tree_view->priv->modify_selection_pressed = TRUE;
8598       if ((state & extend_mod_mask) == extend_mod_mask)
8599         tree_view->priv->extend_selection_pressed = TRUE;
8600     }
8601   /* else we assume not pressed */
8602
8603   switch (step)
8604     {
8605       /* currently we make no distinction.  When we go bi-di, we need to */
8606     case GTK_MOVEMENT_LOGICAL_POSITIONS:
8607     case GTK_MOVEMENT_VISUAL_POSITIONS:
8608       gtk_tree_view_move_cursor_left_right (tree_view, count);
8609       break;
8610     case GTK_MOVEMENT_DISPLAY_LINES:
8611       gtk_tree_view_move_cursor_up_down (tree_view, count);
8612       break;
8613     case GTK_MOVEMENT_PAGES:
8614       gtk_tree_view_move_cursor_page_up_down (tree_view, count);
8615       break;
8616     case GTK_MOVEMENT_BUFFER_ENDS:
8617       gtk_tree_view_move_cursor_start_end (tree_view, count);
8618       break;
8619     default:
8620       g_assert_not_reached ();
8621     }
8622
8623   tree_view->priv->modify_selection_pressed = FALSE;
8624   tree_view->priv->extend_selection_pressed = FALSE;
8625
8626   return TRUE;
8627 }
8628
8629 static void
8630 gtk_tree_view_put (GtkTreeView *tree_view,
8631                    GtkWidget   *child_widget,
8632                    /* in bin_window coordinates */
8633                    gint         x,
8634                    gint         y,
8635                    gint         width,
8636                    gint         height)
8637 {
8638   GtkTreeViewChild *child;
8639
8640   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
8641   g_return_if_fail (GTK_IS_WIDGET (child_widget));
8642
8643   child = g_slice_new (GtkTreeViewChild);
8644
8645   child->widget = child_widget;
8646   child->x = x;
8647   child->y = y;
8648   child->width = width;
8649   child->height = height;
8650
8651   tree_view->priv->children = g_list_append (tree_view->priv->children, child);
8652
8653   if (gtk_widget_get_realized (GTK_WIDGET (tree_view)))
8654     gtk_widget_set_parent_window (child->widget, tree_view->priv->bin_window);
8655
8656   gtk_widget_set_parent (child_widget, GTK_WIDGET (tree_view));
8657 }
8658
8659 void
8660 _gtk_tree_view_child_move_resize (GtkTreeView *tree_view,
8661                                   GtkWidget   *widget,
8662                                   /* in tree coordinates */
8663                                   gint         x,
8664                                   gint         y,
8665                                   gint         width,
8666                                   gint         height)
8667 {
8668   GtkTreeViewChild *child = NULL;
8669   GList *list;
8670   GdkRectangle allocation;
8671
8672   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
8673   g_return_if_fail (GTK_IS_WIDGET (widget));
8674
8675   for (list = tree_view->priv->children; list; list = list->next)
8676     {
8677       if (((GtkTreeViewChild *)list->data)->widget == widget)
8678         {
8679           child = list->data;
8680           break;
8681         }
8682     }
8683   if (child == NULL)
8684     return;
8685
8686   allocation.x = child->x = x;
8687   allocation.y = child->y = y;
8688   allocation.width = child->width = width;
8689   allocation.height = child->height = height;
8690
8691   if (gtk_widget_get_realized (widget))
8692     gtk_widget_size_allocate (widget, &allocation);
8693 }
8694
8695
8696 /* TreeModel Callbacks
8697  */
8698
8699 static void
8700 gtk_tree_view_row_changed (GtkTreeModel *model,
8701                            GtkTreePath  *path,
8702                            GtkTreeIter  *iter,
8703                            gpointer      data)
8704 {
8705   GtkTreeView *tree_view = (GtkTreeView *)data;
8706   GtkRBTree *tree;
8707   GtkRBNode *node;
8708   gboolean free_path = FALSE;
8709   GList *list;
8710   GtkTreePath *cursor_path;
8711
8712   g_return_if_fail (path != NULL || iter != NULL);
8713
8714   if (tree_view->priv->cursor_node != NULL)
8715     cursor_path = _gtk_tree_path_new_from_rbtree (tree_view->priv->cursor_tree,
8716                                                   tree_view->priv->cursor_node);
8717   else
8718     cursor_path = NULL;
8719
8720   if (tree_view->priv->edited_column &&
8721       (cursor_path == NULL || gtk_tree_path_compare (cursor_path, path) == 0))
8722     gtk_tree_view_stop_editing (tree_view, TRUE);
8723
8724   if (cursor_path != NULL)
8725     gtk_tree_path_free (cursor_path);
8726
8727   if (path == NULL)
8728     {
8729       path = gtk_tree_model_get_path (model, iter);
8730       free_path = TRUE;
8731     }
8732   else if (iter == NULL)
8733     gtk_tree_model_get_iter (model, iter, path);
8734
8735   if (_gtk_tree_view_find_node (tree_view,
8736                                 path,
8737                                 &tree,
8738                                 &node))
8739     /* We aren't actually showing the node */
8740     goto done;
8741
8742   if (tree == NULL)
8743     goto done;
8744
8745   if (tree_view->priv->fixed_height_mode
8746       && tree_view->priv->fixed_height >= 0)
8747     {
8748       _gtk_rbtree_node_set_height (tree, node, tree_view->priv->fixed_height);
8749       if (gtk_widget_get_realized (GTK_WIDGET (tree_view)))
8750         gtk_tree_view_node_queue_redraw (tree_view, tree, node);
8751     }
8752   else
8753     {
8754       _gtk_rbtree_node_mark_invalid (tree, node);
8755       for (list = tree_view->priv->columns; list; list = list->next)
8756         {
8757           GtkTreeViewColumn *column;
8758
8759           column = list->data;
8760           if (!gtk_tree_view_column_get_visible (column))
8761             continue;
8762
8763           if (gtk_tree_view_column_get_sizing (column) == GTK_TREE_VIEW_COLUMN_AUTOSIZE)
8764             {
8765               _gtk_tree_view_column_cell_set_dirty (column, TRUE);
8766             }
8767         }
8768     }
8769
8770  done:
8771   if (!tree_view->priv->fixed_height_mode &&
8772       gtk_widget_get_realized (GTK_WIDGET (tree_view)))
8773     install_presize_handler (tree_view);
8774   if (free_path)
8775     gtk_tree_path_free (path);
8776 }
8777
8778 static void
8779 gtk_tree_view_row_inserted (GtkTreeModel *model,
8780                             GtkTreePath  *path,
8781                             GtkTreeIter  *iter,
8782                             gpointer      data)
8783 {
8784   GtkTreeView *tree_view = (GtkTreeView *) data;
8785   gint *indices;
8786   GtkRBTree *tree;
8787   GtkRBNode *tmpnode = NULL;
8788   gint depth;
8789   gint i = 0;
8790   gint height;
8791   gboolean free_path = FALSE;
8792   gboolean node_visible = TRUE;
8793
8794   g_return_if_fail (path != NULL || iter != NULL);
8795
8796   if (tree_view->priv->fixed_height_mode
8797       && tree_view->priv->fixed_height >= 0)
8798     height = tree_view->priv->fixed_height;
8799   else
8800     height = 0;
8801
8802   if (path == NULL)
8803     {
8804       path = gtk_tree_model_get_path (model, iter);
8805       free_path = TRUE;
8806     }
8807   else if (iter == NULL)
8808     gtk_tree_model_get_iter (model, iter, path);
8809
8810   if (tree_view->priv->tree == NULL)
8811     tree_view->priv->tree = _gtk_rbtree_new ();
8812
8813   tree = tree_view->priv->tree;
8814
8815   /* Update all row-references */
8816   gtk_tree_row_reference_inserted (G_OBJECT (data), path);
8817   depth = gtk_tree_path_get_depth (path);
8818   indices = gtk_tree_path_get_indices (path);
8819
8820   /* First, find the parent tree */
8821   while (i < depth - 1)
8822     {
8823       if (tree == NULL)
8824         {
8825           /* We aren't showing the node */
8826           node_visible = FALSE;
8827           goto done;
8828         }
8829
8830       tmpnode = _gtk_rbtree_find_count (tree, indices[i] + 1);
8831       if (tmpnode == NULL)
8832         {
8833           g_warning ("A node was inserted with a parent that's not in the tree.\n" \
8834                      "This possibly means that a GtkTreeModel inserted a child node\n" \
8835                      "before the parent was inserted.");
8836           goto done;
8837         }
8838       else if (!GTK_RBNODE_FLAG_SET (tmpnode, GTK_RBNODE_IS_PARENT))
8839         {
8840           /* FIXME enforce correct behavior on model, probably */
8841           /* In theory, the model should have emitted has_child_toggled here.  We
8842            * try to catch it anyway, just to be safe, in case the model hasn't.
8843            */
8844           GtkTreePath *tmppath = _gtk_tree_path_new_from_rbtree (tree, tmpnode);
8845           gtk_tree_view_row_has_child_toggled (model, tmppath, NULL, data);
8846           gtk_tree_path_free (tmppath);
8847           goto done;
8848         }
8849
8850       tree = tmpnode->children;
8851       i++;
8852     }
8853
8854   if (tree == NULL)
8855     {
8856       node_visible = FALSE;
8857       goto done;
8858     }
8859
8860   /* ref the node */
8861   gtk_tree_model_ref_node (tree_view->priv->model, iter);
8862   if (indices[depth - 1] == 0)
8863     {
8864       tmpnode = _gtk_rbtree_find_count (tree, 1);
8865       tmpnode = _gtk_rbtree_insert_before (tree, tmpnode, height, FALSE);
8866     }
8867   else
8868     {
8869       tmpnode = _gtk_rbtree_find_count (tree, indices[depth - 1]);
8870       tmpnode = _gtk_rbtree_insert_after (tree, tmpnode, height, FALSE);
8871     }
8872
8873  done:
8874   if (height > 0)
8875     {
8876       if (tree)
8877         _gtk_rbtree_node_mark_valid (tree, tmpnode);
8878
8879       if (node_visible && node_is_visible (tree_view, tree, tmpnode))
8880         gtk_widget_queue_resize (GTK_WIDGET (tree_view));
8881       else
8882         gtk_widget_queue_resize_no_redraw (GTK_WIDGET (tree_view));
8883     }
8884   else
8885     install_presize_handler (tree_view);
8886   if (free_path)
8887     gtk_tree_path_free (path);
8888 }
8889
8890 static void
8891 gtk_tree_view_row_has_child_toggled (GtkTreeModel *model,
8892                                      GtkTreePath  *path,
8893                                      GtkTreeIter  *iter,
8894                                      gpointer      data)
8895 {
8896   GtkTreeView *tree_view = (GtkTreeView *)data;
8897   GtkTreeIter real_iter;
8898   gboolean has_child;
8899   GtkRBTree *tree;
8900   GtkRBNode *node;
8901   gboolean free_path = FALSE;
8902
8903   g_return_if_fail (path != NULL || iter != NULL);
8904
8905   if (iter)
8906     real_iter = *iter;
8907
8908   if (path == NULL)
8909     {
8910       path = gtk_tree_model_get_path (model, iter);
8911       free_path = TRUE;
8912     }
8913   else if (iter == NULL)
8914     gtk_tree_model_get_iter (model, &real_iter, path);
8915
8916   if (_gtk_tree_view_find_node (tree_view,
8917                                 path,
8918                                 &tree,
8919                                 &node))
8920     /* We aren't actually showing the node */
8921     goto done;
8922
8923   if (tree == NULL)
8924     goto done;
8925
8926   has_child = gtk_tree_model_iter_has_child (model, &real_iter);
8927   /* Sanity check.
8928    */
8929   if (GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_PARENT) == has_child)
8930     goto done;
8931
8932   if (has_child)
8933     GTK_RBNODE_SET_FLAG (node, GTK_RBNODE_IS_PARENT);
8934   else
8935     GTK_RBNODE_UNSET_FLAG (node, GTK_RBNODE_IS_PARENT);
8936
8937   if (has_child && tree_view->priv->is_list)
8938     {
8939       tree_view->priv->is_list = FALSE;
8940       if (tree_view->priv->show_expanders)
8941         {
8942           GList *list;
8943
8944           for (list = tree_view->priv->columns; list; list = list->next)
8945             if (gtk_tree_view_column_get_visible (GTK_TREE_VIEW_COLUMN (list->data)))
8946               {
8947                 _gtk_tree_view_column_cell_set_dirty (GTK_TREE_VIEW_COLUMN (list->data), TRUE);
8948                 break;
8949               }
8950         }
8951       gtk_widget_queue_resize (GTK_WIDGET (tree_view));
8952     }
8953   else
8954     {
8955       _gtk_tree_view_queue_draw_node (tree_view, tree, node, NULL);
8956     }
8957
8958  done:
8959   if (free_path)
8960     gtk_tree_path_free (path);
8961 }
8962
8963 static void
8964 count_children_helper (GtkRBTree *tree,
8965                        GtkRBNode *node,
8966                        gpointer   data)
8967 {
8968   if (node->children)
8969     _gtk_rbtree_traverse (node->children, node->children->root, G_POST_ORDER, count_children_helper, data);
8970   (*((gint *)data))++;
8971 }
8972
8973 static void
8974 check_selection_helper (GtkRBTree *tree,
8975                         GtkRBNode *node,
8976                         gpointer   data)
8977 {
8978   gint *value = (gint *)data;
8979
8980   *value |= GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_SELECTED);
8981
8982   if (node->children && !*value)
8983     _gtk_rbtree_traverse (node->children, node->children->root, G_POST_ORDER, check_selection_helper, data);
8984 }
8985
8986 static void
8987 gtk_tree_view_row_deleted (GtkTreeModel *model,
8988                            GtkTreePath  *path,
8989                            gpointer      data)
8990 {
8991   GtkTreeView *tree_view = (GtkTreeView *)data;
8992   GtkRBTree *tree;
8993   GtkRBNode *node;
8994   GList *list;
8995   gboolean selection_changed = FALSE, cursor_changed = FALSE;
8996   GtkRBTree *cursor_tree = NULL;
8997   GtkRBNode *cursor_node = NULL;
8998   GtkStyleContext *context;
8999
9000   g_return_if_fail (path != NULL);
9001
9002   gtk_tree_row_reference_deleted (G_OBJECT (data), path);
9003
9004   if (_gtk_tree_view_find_node (tree_view, path, &tree, &node))
9005     return;
9006
9007   if (tree == NULL)
9008     return;
9009
9010   /* check if the selection has been changed */
9011   _gtk_rbtree_traverse (tree, node, G_POST_ORDER,
9012                         check_selection_helper, &selection_changed);
9013
9014   for (list = tree_view->priv->columns; list; list = list->next)
9015     if (gtk_tree_view_column_get_visible (GTK_TREE_VIEW_COLUMN (list->data)) &&
9016         gtk_tree_view_column_get_sizing (GTK_TREE_VIEW_COLUMN (list->data)) == GTK_TREE_VIEW_COLUMN_AUTOSIZE)
9017       _gtk_tree_view_column_cell_set_dirty ((GtkTreeViewColumn *)list->data, TRUE);
9018
9019   /* Ensure we don't have a dangling pointer to a dead node */
9020   ensure_unprelighted (tree_view);
9021
9022   /* Cancel editting if we've started */
9023   gtk_tree_view_stop_editing (tree_view, TRUE);
9024
9025   /* If the cursor row got deleted, move the cursor to the next row */
9026   if (tree_view->priv->cursor_node &&
9027       (tree_view->priv->cursor_node == node ||
9028        (node->children &&  _gtk_rbtree_contains (node->children, tree_view->priv->cursor_tree))))
9029     {
9030       GtkTreePath *cursor_path;
9031
9032       cursor_tree = tree;
9033       cursor_node = _gtk_rbtree_next (tree, node);
9034       /* find the first node that is not going to be deleted */
9035       while (cursor_node == NULL && cursor_tree->parent_tree)
9036         {
9037           cursor_node = _gtk_rbtree_next (cursor_tree->parent_tree,
9038                                           cursor_tree->parent_node);
9039           cursor_tree = cursor_tree->parent_tree;
9040         }
9041
9042       if (cursor_node != NULL)
9043         cursor_path = _gtk_tree_path_new_from_rbtree (cursor_tree, cursor_node);
9044       else
9045         cursor_path = NULL;
9046
9047       if (cursor_path == NULL ||
9048           ! search_first_focusable_path (tree_view, &cursor_path, TRUE,
9049                                          &cursor_tree, &cursor_node))
9050         {
9051           /* It looks like we reached the end of the view without finding
9052            * a focusable row.  We will step backwards to find the last
9053            * focusable row.
9054            */
9055           _gtk_rbtree_prev_full (tree, node, &cursor_tree, &cursor_node);
9056           if (cursor_node)
9057             {
9058               cursor_path = _gtk_tree_path_new_from_rbtree (cursor_tree, cursor_node);
9059               if (! search_first_focusable_path (tree_view, &cursor_path, FALSE,
9060                                                  &cursor_tree, &cursor_node))
9061                 cursor_node = NULL;
9062               gtk_tree_path_free (cursor_path);
9063             }
9064         }
9065       else if (cursor_path)
9066         gtk_tree_path_free (cursor_path);
9067
9068       cursor_changed = TRUE;
9069     }
9070
9071   if (tree_view->priv->destroy_count_func)
9072     {
9073       gint child_count = 0;
9074       if (node->children)
9075         _gtk_rbtree_traverse (node->children, node->children->root, G_POST_ORDER, count_children_helper, &child_count);
9076       tree_view->priv->destroy_count_func (tree_view, path, child_count, tree_view->priv->destroy_count_data);
9077     }
9078
9079   if (tree->root->count == 1)
9080     {
9081       if (tree_view->priv->tree == tree)
9082         tree_view->priv->tree = NULL;
9083
9084       _gtk_tree_view_accessible_remove_state (tree_view,
9085                                               tree->parent_tree, tree->parent_node,
9086                                               GTK_CELL_RENDERER_EXPANDED);
9087       _gtk_tree_view_accessible_remove (tree_view, tree, NULL);
9088       _gtk_rbtree_remove (tree);
9089     }
9090   else
9091     {
9092       _gtk_tree_view_accessible_remove (tree_view, tree, node);
9093       _gtk_rbtree_remove_node (tree, node);
9094     }
9095
9096   if (! gtk_tree_row_reference_valid (tree_view->priv->top_row))
9097     {
9098       gtk_tree_row_reference_free (tree_view->priv->top_row);
9099       tree_view->priv->top_row = NULL;
9100     }
9101
9102   /* Cancel any ongoing animation happening within the row */
9103   context = gtk_widget_get_style_context (GTK_WIDGET (tree_view));
9104   gtk_style_context_cancel_animations (context, node);
9105
9106   install_scroll_sync_handler (tree_view);
9107
9108   gtk_widget_queue_resize (GTK_WIDGET (tree_view));
9109
9110   if (cursor_changed)
9111     {
9112       if (cursor_node)
9113         {
9114           GtkTreePath *cursor_path = _gtk_tree_path_new_from_rbtree (cursor_tree, cursor_node);
9115           gtk_tree_view_real_set_cursor (tree_view, cursor_path, CLEAR_AND_SELECT | CURSOR_INVALID);
9116           gtk_tree_path_free (cursor_path);
9117         }
9118       else
9119         gtk_tree_view_real_set_cursor (tree_view, NULL, CLEAR_AND_SELECT | CURSOR_INVALID);
9120     }
9121   if (selection_changed)
9122     g_signal_emit_by_name (tree_view->priv->selection, "changed");
9123 }
9124
9125 static void
9126 gtk_tree_view_rows_reordered (GtkTreeModel *model,
9127                               GtkTreePath  *parent,
9128                               GtkTreeIter  *iter,
9129                               gint         *new_order,
9130                               gpointer      data)
9131 {
9132   GtkTreeView *tree_view = GTK_TREE_VIEW (data);
9133   GtkRBTree *tree;
9134   GtkRBNode *node;
9135   gint len;
9136
9137   len = gtk_tree_model_iter_n_children (model, iter);
9138
9139   if (len < 2)
9140     return;
9141
9142   gtk_tree_row_reference_reordered (G_OBJECT (data),
9143                                     parent,
9144                                     iter,
9145                                     new_order);
9146
9147   if (_gtk_tree_view_find_node (tree_view,
9148                                 parent,
9149                                 &tree,
9150                                 &node))
9151     return;
9152
9153   /* We need to special case the parent path */
9154   if (tree == NULL)
9155     tree = tree_view->priv->tree;
9156   else
9157     tree = node->children;
9158
9159   if (tree == NULL)
9160     return;
9161
9162   if (tree_view->priv->edited_column)
9163     gtk_tree_view_stop_editing (tree_view, TRUE);
9164
9165   /* we need to be unprelighted */
9166   ensure_unprelighted (tree_view);
9167
9168   _gtk_rbtree_reorder (tree, new_order, len);
9169
9170   _gtk_tree_view_accessible_reorder (tree_view);
9171
9172   gtk_widget_queue_draw (GTK_WIDGET (tree_view));
9173
9174   gtk_tree_view_dy_to_top_row (tree_view);
9175 }
9176
9177
9178 /* Internal tree functions
9179  */
9180
9181
9182 static void
9183 gtk_tree_view_get_background_xrange (GtkTreeView       *tree_view,
9184                                      GtkRBTree         *tree,
9185                                      GtkTreeViewColumn *column,
9186                                      gint              *x1,
9187                                      gint              *x2)
9188 {
9189   GtkTreeViewColumn *tmp_column = NULL;
9190   gint total_width;
9191   GList *list;
9192   gboolean rtl;
9193
9194   if (x1)
9195     *x1 = 0;
9196
9197   if (x2)
9198     *x2 = 0;
9199
9200   rtl = (gtk_widget_get_direction (GTK_WIDGET (tree_view)) == GTK_TEXT_DIR_RTL);
9201
9202   total_width = 0;
9203   for (list = (rtl ? g_list_last (tree_view->priv->columns) : g_list_first (tree_view->priv->columns));
9204        list;
9205        list = (rtl ? list->prev : list->next))
9206     {
9207       tmp_column = list->data;
9208
9209       if (tmp_column == column)
9210         break;
9211
9212       if (gtk_tree_view_column_get_visible (tmp_column))
9213         total_width += gtk_tree_view_column_get_width (tmp_column);
9214     }
9215
9216   if (tmp_column != column)
9217     {
9218       g_warning (G_STRLOC": passed-in column isn't in the tree");
9219       return;
9220     }
9221
9222   if (x1)
9223     *x1 = total_width;
9224
9225   if (x2)
9226     {
9227       if (gtk_tree_view_column_get_visible (column))
9228         *x2 = total_width + gtk_tree_view_column_get_width (column);
9229       else
9230         *x2 = total_width; /* width of 0 */
9231     }
9232 }
9233
9234 static void
9235 gtk_tree_view_get_arrow_xrange (GtkTreeView *tree_view,
9236                                 GtkRBTree   *tree,
9237                                 gint        *x1,
9238                                 gint        *x2)
9239 {
9240   gint x_offset = 0;
9241   GList *list;
9242   GtkTreeViewColumn *tmp_column = NULL;
9243   gint total_width;
9244   gboolean indent_expanders;
9245   gboolean rtl;
9246
9247   rtl = (gtk_widget_get_direction (GTK_WIDGET (tree_view)) == GTK_TEXT_DIR_RTL);
9248
9249   total_width = 0;
9250   for (list = (rtl ? g_list_last (tree_view->priv->columns) : g_list_first (tree_view->priv->columns));
9251        list;
9252        list = (rtl ? list->prev : list->next))
9253     {
9254       tmp_column = list->data;
9255
9256       if (gtk_tree_view_is_expander_column (tree_view, tmp_column))
9257         {
9258           if (rtl)
9259             x_offset = total_width + gtk_tree_view_column_get_width (tmp_column) - tree_view->priv->expander_size;
9260           else
9261             x_offset = total_width;
9262           break;
9263         }
9264
9265       if (gtk_tree_view_column_get_visible (tmp_column))
9266         total_width += gtk_tree_view_column_get_width (tmp_column);
9267     }
9268
9269   gtk_widget_style_get (GTK_WIDGET (tree_view),
9270                         "indent-expanders", &indent_expanders,
9271                         NULL);
9272
9273   if (indent_expanders)
9274     {
9275       if (rtl)
9276         x_offset -= tree_view->priv->expander_size * _gtk_rbtree_get_depth (tree);
9277       else
9278         x_offset += tree_view->priv->expander_size * _gtk_rbtree_get_depth (tree);
9279     }
9280
9281   *x1 = x_offset;
9282
9283   if (tmp_column &&
9284       gtk_tree_view_column_get_visible (tmp_column))
9285     /* +1 because x2 isn't included in the range. */
9286     *x2 = *x1 + tree_view->priv->expander_size + 1;
9287   else
9288     *x2 = *x1;
9289 }
9290
9291 static void
9292 gtk_tree_view_build_tree (GtkTreeView *tree_view,
9293                           GtkRBTree   *tree,
9294                           GtkTreeIter *iter,
9295                           gint         depth,
9296                           gboolean     recurse)
9297 {
9298   GtkRBNode *temp = NULL;
9299   GtkTreePath *path = NULL;
9300
9301   do
9302     {
9303       gtk_tree_model_ref_node (tree_view->priv->model, iter);
9304       temp = _gtk_rbtree_insert_after (tree, temp, 0, FALSE);
9305
9306       if (tree_view->priv->fixed_height > 0)
9307         {
9308           if (GTK_RBNODE_FLAG_SET (temp, GTK_RBNODE_INVALID))
9309             {
9310               _gtk_rbtree_node_set_height (tree, temp, tree_view->priv->fixed_height);
9311               _gtk_rbtree_node_mark_valid (tree, temp);
9312             }
9313         }
9314
9315       if (tree_view->priv->is_list)
9316         continue;
9317
9318       if (recurse)
9319         {
9320           GtkTreeIter child;
9321
9322           if (!path)
9323             path = gtk_tree_model_get_path (tree_view->priv->model, iter);
9324           else
9325             gtk_tree_path_next (path);
9326
9327           if (gtk_tree_model_iter_children (tree_view->priv->model, &child, iter))
9328             {
9329               gboolean expand;
9330
9331               g_signal_emit (tree_view, tree_view_signals[TEST_EXPAND_ROW], 0, iter, path, &expand);
9332
9333               if (gtk_tree_model_iter_has_child (tree_view->priv->model, iter)
9334                   && !expand)
9335                 {
9336                   temp->children = _gtk_rbtree_new ();
9337                   temp->children->parent_tree = tree;
9338                   temp->children->parent_node = temp;
9339                   gtk_tree_view_build_tree (tree_view, temp->children, &child, depth + 1, recurse);
9340                 }
9341             }
9342         }
9343
9344       if (gtk_tree_model_iter_has_child (tree_view->priv->model, iter))
9345         {
9346           if ((temp->flags&GTK_RBNODE_IS_PARENT) != GTK_RBNODE_IS_PARENT)
9347             temp->flags ^= GTK_RBNODE_IS_PARENT;
9348         }
9349     }
9350   while (gtk_tree_model_iter_next (tree_view->priv->model, iter));
9351
9352   if (path)
9353     gtk_tree_path_free (path);
9354 }
9355
9356 /* Make sure the node is visible vertically */
9357 static void
9358 gtk_tree_view_clamp_node_visible (GtkTreeView *tree_view,
9359                                   GtkRBTree   *tree,
9360                                   GtkRBNode   *node)
9361 {
9362   gint node_dy, height;
9363   GtkTreePath *path = NULL;
9364
9365   if (!gtk_widget_get_realized (GTK_WIDGET (tree_view)))
9366     return;
9367
9368   /* just return if the node is visible, avoiding a costly expose */
9369   node_dy = _gtk_rbtree_node_find_offset (tree, node);
9370   height = gtk_tree_view_get_row_height (tree_view, node);
9371   if (! GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_INVALID)
9372       && node_dy >= gtk_adjustment_get_value (tree_view->priv->vadjustment)
9373       && node_dy + height <= (gtk_adjustment_get_value (tree_view->priv->vadjustment)
9374                               + gtk_adjustment_get_page_size (tree_view->priv->vadjustment)))
9375     return;
9376
9377   path = _gtk_tree_path_new_from_rbtree (tree, node);
9378   if (path)
9379     {
9380       /* We process updates because we want to clear old selected items when we scroll.
9381        * if this is removed, we get a "selection streak" at the bottom. */
9382       gtk_tree_view_bin_process_updates (tree_view);
9383
9384       gtk_tree_view_scroll_to_cell (tree_view, path, NULL, FALSE, 0.0, 0.0);
9385       gtk_tree_path_free (path);
9386     }
9387 }
9388
9389 static void
9390 gtk_tree_view_clamp_column_visible (GtkTreeView       *tree_view,
9391                                     GtkTreeViewColumn *column,
9392                                     gboolean           focus_to_cell)
9393 {
9394   GtkAllocation allocation;
9395   gint x, width;
9396
9397   if (column == NULL)
9398     return;
9399
9400   gtk_widget_get_allocation (gtk_tree_view_column_get_button (column), &allocation);
9401   x = allocation.x;
9402   width = allocation.width;
9403
9404   if (width > gtk_adjustment_get_page_size (tree_view->priv->hadjustment))
9405     {
9406       /* The column is larger than the horizontal page size.  If the
9407        * column has cells which can be focussed individually, then we make
9408        * sure the cell which gets focus is fully visible (if even the
9409        * focus cell is bigger than the page size, we make sure the
9410        * left-hand side of the cell is visible).
9411        *
9412        * If the column does not have an activatable cell, we
9413        * make sure the left-hand side of the column is visible.
9414        */
9415
9416       if (focus_to_cell && gtk_tree_view_has_can_focus_cell (tree_view))
9417         {
9418           GtkCellArea *cell_area;
9419           GtkCellRenderer *focus_cell;
9420
9421           cell_area = gtk_cell_layout_get_area (GTK_CELL_LAYOUT (column));
9422           focus_cell = gtk_cell_area_get_focus_cell (cell_area);
9423
9424           if (gtk_tree_view_column_cell_get_position (column, focus_cell,
9425                                                       &x, &width))
9426             {
9427               if (width < gtk_adjustment_get_page_size (tree_view->priv->hadjustment))
9428                 {
9429                   if (gtk_adjustment_get_value (tree_view->priv->hadjustment) + gtk_adjustment_get_page_size (tree_view->priv->hadjustment) < x + width)
9430                     gtk_adjustment_set_value (tree_view->priv->hadjustment,
9431                                               x + width - gtk_adjustment_get_page_size (tree_view->priv->hadjustment));
9432                   else if (gtk_adjustment_get_value (tree_view->priv->hadjustment) > x)
9433                     gtk_adjustment_set_value (tree_view->priv->hadjustment, x);
9434                 }
9435             }
9436         }
9437
9438       gtk_adjustment_set_value (tree_view->priv->hadjustment, x);
9439     }
9440   else
9441     {
9442       if ((gtk_adjustment_get_value (tree_view->priv->hadjustment) + gtk_adjustment_get_page_size (tree_view->priv->hadjustment)) < (x + width))
9443           gtk_adjustment_set_value (tree_view->priv->hadjustment,
9444                                     x + width - gtk_adjustment_get_page_size (tree_view->priv->hadjustment));
9445       else if (gtk_adjustment_get_value (tree_view->priv->hadjustment) > x)
9446         gtk_adjustment_set_value (tree_view->priv->hadjustment, x);
9447   }
9448 }
9449
9450 /* This function could be more efficient.  I'll optimize it if profiling seems
9451  * to imply that it is important */
9452 GtkTreePath *
9453 _gtk_tree_path_new_from_rbtree (GtkRBTree   *tree,
9454                                 GtkRBNode   *node)
9455 {
9456   GtkTreePath *path;
9457   GtkRBTree *tmp_tree;
9458   GtkRBNode *tmp_node, *last;
9459   gint count;
9460
9461   path = gtk_tree_path_new ();
9462
9463   g_return_val_if_fail (node != NULL, path);
9464
9465   count = 1 + node->left->count;
9466
9467   last = node;
9468   tmp_node = node->parent;
9469   tmp_tree = tree;
9470   while (tmp_tree)
9471     {
9472       while (!_gtk_rbtree_is_nil (tmp_node))
9473         {
9474           if (tmp_node->right == last)
9475             count += 1 + tmp_node->left->count;
9476           last = tmp_node;
9477           tmp_node = tmp_node->parent;
9478         }
9479       gtk_tree_path_prepend_index (path, count - 1);
9480       last = tmp_tree->parent_node;
9481       tmp_tree = tmp_tree->parent_tree;
9482       if (last)
9483         {
9484           count = 1 + last->left->count;
9485           tmp_node = last->parent;
9486         }
9487     }
9488   return path;
9489 }
9490
9491 /* Returns TRUE if we ran out of tree before finding the path.  If the path is
9492  * invalid (ie. points to a node that's not in the tree), *tree and *node are
9493  * both set to NULL.
9494  */
9495 gboolean
9496 _gtk_tree_view_find_node (GtkTreeView  *tree_view,
9497                           GtkTreePath  *path,
9498                           GtkRBTree   **tree,
9499                           GtkRBNode   **node)
9500 {
9501   GtkRBNode *tmpnode = NULL;
9502   GtkRBTree *tmptree = tree_view->priv->tree;
9503   gint *indices = gtk_tree_path_get_indices (path);
9504   gint depth = gtk_tree_path_get_depth (path);
9505   gint i = 0;
9506
9507   *node = NULL;
9508   *tree = NULL;
9509
9510   if (depth == 0 || tmptree == NULL)
9511     return FALSE;
9512   do
9513     {
9514       tmpnode = _gtk_rbtree_find_count (tmptree, indices[i] + 1);
9515       ++i;
9516       if (tmpnode == NULL)
9517         {
9518           *tree = NULL;
9519           *node = NULL;
9520           return FALSE;
9521         }
9522       if (i >= depth)
9523         {
9524           *tree = tmptree;
9525           *node = tmpnode;
9526           return FALSE;
9527         }
9528       *tree = tmptree;
9529       *node = tmpnode;
9530       tmptree = tmpnode->children;
9531       if (tmptree == NULL)
9532         return TRUE;
9533     }
9534   while (1);
9535 }
9536
9537 static gboolean
9538 gtk_tree_view_is_expander_column (GtkTreeView       *tree_view,
9539                                   GtkTreeViewColumn *column)
9540 {
9541   GList *list;
9542
9543   if (tree_view->priv->is_list)
9544     return FALSE;
9545
9546   if (tree_view->priv->expander_column != NULL)
9547     {
9548       if (tree_view->priv->expander_column == column)
9549         return TRUE;
9550       return FALSE;
9551     }
9552   else
9553     {
9554       for (list = tree_view->priv->columns;
9555            list;
9556            list = list->next)
9557         if (gtk_tree_view_column_get_visible (GTK_TREE_VIEW_COLUMN (list->data)))
9558           break;
9559       if (list && list->data == column)
9560         return TRUE;
9561     }
9562   return FALSE;
9563 }
9564
9565 static inline gboolean
9566 gtk_tree_view_draw_expanders (GtkTreeView *tree_view)
9567 {
9568   if (!tree_view->priv->is_list && tree_view->priv->show_expanders)
9569     return TRUE;
9570   /* else */
9571   return FALSE;
9572 }
9573
9574 static void
9575 gtk_tree_view_add_move_binding (GtkBindingSet  *binding_set,
9576                                 guint           keyval,
9577                                 guint           modmask,
9578                                 gboolean        add_shifted_binding,
9579                                 GtkMovementStep step,
9580                                 gint            count)
9581 {
9582
9583   gtk_binding_entry_add_signal (binding_set, keyval, modmask,
9584                                 "move-cursor", 2,
9585                                 G_TYPE_ENUM, step,
9586                                 G_TYPE_INT, count);
9587
9588   if (add_shifted_binding)
9589     gtk_binding_entry_add_signal (binding_set, keyval, GDK_SHIFT_MASK,
9590                                   "move-cursor", 2,
9591                                   G_TYPE_ENUM, step,
9592                                   G_TYPE_INT, count);
9593
9594   if ((modmask & GDK_CONTROL_MASK) == GDK_CONTROL_MASK)
9595    return;
9596
9597   gtk_binding_entry_add_signal (binding_set, keyval, GDK_CONTROL_MASK | GDK_SHIFT_MASK,
9598                                 "move-cursor", 2,
9599                                 G_TYPE_ENUM, step,
9600                                 G_TYPE_INT, count);
9601
9602   gtk_binding_entry_add_signal (binding_set, keyval, GDK_CONTROL_MASK,
9603                                 "move-cursor", 2,
9604                                 G_TYPE_ENUM, step,
9605                                 G_TYPE_INT, count);
9606 }
9607
9608 static gint
9609 gtk_tree_view_unref_tree_helper (GtkTreeModel *model,
9610                                  GtkTreeIter  *iter,
9611                                  GtkRBTree    *tree,
9612                                  GtkRBNode    *node)
9613 {
9614   gint retval = FALSE;
9615   do
9616     {
9617       g_return_val_if_fail (node != NULL, FALSE);
9618
9619       if (node->children)
9620         {
9621           GtkTreeIter child;
9622           GtkRBTree *new_tree;
9623           GtkRBNode *new_node;
9624
9625           new_tree = node->children;
9626           new_node = _gtk_rbtree_first (new_tree);
9627
9628           if (!gtk_tree_model_iter_children (model, &child, iter))
9629             return FALSE;
9630
9631           retval = retval || gtk_tree_view_unref_tree_helper (model, &child, new_tree, new_node);
9632         }
9633
9634       if (GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_SELECTED))
9635         retval = TRUE;
9636       gtk_tree_model_unref_node (model, iter);
9637       node = _gtk_rbtree_next (tree, node);
9638     }
9639   while (gtk_tree_model_iter_next (model, iter));
9640
9641   return retval;
9642 }
9643
9644 static gint
9645 gtk_tree_view_unref_and_check_selection_tree (GtkTreeView *tree_view,
9646                                               GtkRBTree   *tree)
9647 {
9648   GtkTreeIter iter;
9649   GtkTreePath *path;
9650   GtkRBNode *node;
9651   gint retval;
9652
9653   if (!tree)
9654     return FALSE;
9655
9656   node = _gtk_rbtree_first (tree);
9657
9658   g_return_val_if_fail (node != NULL, FALSE);
9659   path = _gtk_tree_path_new_from_rbtree (tree, node);
9660   gtk_tree_model_get_iter (GTK_TREE_MODEL (tree_view->priv->model),
9661                            &iter, path);
9662   retval = gtk_tree_view_unref_tree_helper (GTK_TREE_MODEL (tree_view->priv->model), &iter, tree, node);
9663   gtk_tree_path_free (path);
9664
9665   return retval;
9666 }
9667
9668 static void
9669 gtk_tree_view_set_column_drag_info (GtkTreeView       *tree_view,
9670                                     GtkTreeViewColumn *column)
9671 {
9672   GtkTreeViewColumn *left_column;
9673   GtkTreeViewColumn *cur_column = NULL;
9674   GtkTreeViewColumnReorder *reorder;
9675   gboolean rtl;
9676   GList *tmp_list;
9677   gint left;
9678
9679   /* We want to precalculate the motion list such that we know what column slots
9680    * are available.
9681    */
9682   left_column = NULL;
9683   rtl = (gtk_widget_get_direction (GTK_WIDGET (tree_view)) == GTK_TEXT_DIR_RTL);
9684
9685   /* First, identify all possible drop spots */
9686   if (rtl)
9687     tmp_list = g_list_last (tree_view->priv->columns);
9688   else
9689     tmp_list = g_list_first (tree_view->priv->columns);
9690
9691   while (tmp_list)
9692     {
9693       cur_column = GTK_TREE_VIEW_COLUMN (tmp_list->data);
9694       tmp_list = rtl?g_list_previous (tmp_list):g_list_next (tmp_list);
9695
9696       if (gtk_tree_view_column_get_visible (cur_column) == FALSE)
9697         continue;
9698
9699       /* If it's not the column moving and func tells us to skip over the column, we continue. */
9700       if (left_column != column && cur_column != column &&
9701           tree_view->priv->column_drop_func &&
9702           ! tree_view->priv->column_drop_func (tree_view, column, left_column, cur_column, tree_view->priv->column_drop_func_data))
9703         {
9704           left_column = cur_column;
9705           continue;
9706         }
9707       reorder = g_slice_new0 (GtkTreeViewColumnReorder);
9708       reorder->left_column = left_column;
9709       left_column = reorder->right_column = cur_column;
9710
9711       tree_view->priv->column_drag_info = g_list_append (tree_view->priv->column_drag_info, reorder);
9712     }
9713
9714   /* Add the last one */
9715   if (tree_view->priv->column_drop_func == NULL ||
9716       ((left_column != column) &&
9717        tree_view->priv->column_drop_func (tree_view, column, left_column, NULL, tree_view->priv->column_drop_func_data)))
9718     {
9719       reorder = g_slice_new0 (GtkTreeViewColumnReorder);
9720       reorder->left_column = left_column;
9721       reorder->right_column = NULL;
9722       tree_view->priv->column_drag_info = g_list_append (tree_view->priv->column_drag_info, reorder);
9723     }
9724
9725   /* We quickly check to see if it even makes sense to reorder columns. */
9726   /* If there is nothing that can be moved, then we return */
9727
9728   if (tree_view->priv->column_drag_info == NULL)
9729     return;
9730
9731   /* We know there are always 2 slots possbile, as you can always return column. */
9732   /* If that's all there is, return */
9733   if (tree_view->priv->column_drag_info->next == NULL ||
9734       (tree_view->priv->column_drag_info->next->next == NULL &&
9735        ((GtkTreeViewColumnReorder *)tree_view->priv->column_drag_info->data)->right_column == column &&
9736        ((GtkTreeViewColumnReorder *)tree_view->priv->column_drag_info->next->data)->left_column == column))
9737     {
9738       for (tmp_list = tree_view->priv->column_drag_info; tmp_list; tmp_list = tmp_list->next)
9739         g_slice_free (GtkTreeViewColumnReorder, tmp_list->data);
9740       g_list_free (tree_view->priv->column_drag_info);
9741       tree_view->priv->column_drag_info = NULL;
9742       return;
9743     }
9744   /* We fill in the ranges for the columns, now that we've isolated them */
9745   left = - TREE_VIEW_COLUMN_DRAG_DEAD_MULTIPLIER (tree_view);
9746
9747   for (tmp_list = tree_view->priv->column_drag_info; tmp_list; tmp_list = tmp_list->next)
9748     {
9749       reorder = (GtkTreeViewColumnReorder *) tmp_list->data;
9750
9751       reorder->left_align = left;
9752       if (tmp_list->next != NULL)
9753         {
9754           GtkAllocation right_allocation, left_allocation;
9755           GtkWidget    *left_button, *right_button;
9756
9757           g_assert (tmp_list->next->data);
9758
9759           right_button = gtk_tree_view_column_get_button (reorder->right_column);
9760           left_button  = gtk_tree_view_column_get_button
9761             (((GtkTreeViewColumnReorder *)tmp_list->next->data)->left_column);
9762
9763           gtk_widget_get_allocation (right_button, &right_allocation);
9764           gtk_widget_get_allocation (left_button, &left_allocation);
9765           left = reorder->right_align = (right_allocation.x + right_allocation.width + left_allocation.x) / 2;
9766         }
9767       else
9768         {
9769           reorder->right_align = gdk_window_get_width (tree_view->priv->header_window)
9770                                  + TREE_VIEW_COLUMN_DRAG_DEAD_MULTIPLIER (tree_view);
9771         }
9772     }
9773 }
9774
9775 void
9776 _gtk_tree_view_column_start_drag (GtkTreeView       *tree_view,
9777                                   GtkTreeViewColumn *column,
9778                                   GdkDevice         *device)
9779 {
9780   GdkEvent *send_event;
9781   GtkAllocation allocation;
9782   GtkAllocation button_allocation;
9783   GdkScreen *screen = gtk_widget_get_screen (GTK_WIDGET (tree_view));
9784   GtkWidget *button;
9785   GdkDevice *pointer, *keyboard;
9786
9787   g_return_if_fail (tree_view->priv->column_drag_info == NULL);
9788   g_return_if_fail (tree_view->priv->cur_reorder == NULL);
9789
9790   gtk_tree_view_set_column_drag_info (tree_view, column);
9791
9792   if (tree_view->priv->column_drag_info == NULL)
9793     return;
9794
9795   button = gtk_tree_view_column_get_button (column);
9796
9797   if (tree_view->priv->drag_window == NULL)
9798     {
9799       GdkWindowAttr attributes;
9800       guint attributes_mask;
9801
9802       gtk_widget_get_allocation (button, &button_allocation);
9803
9804       attributes.window_type = GDK_WINDOW_CHILD;
9805       attributes.wclass = GDK_INPUT_OUTPUT;
9806       attributes.x = button_allocation.x;
9807       attributes.y = 0;
9808       attributes.width = button_allocation.width;
9809       attributes.height = button_allocation.height;
9810       attributes.visual = gtk_widget_get_visual (GTK_WIDGET (tree_view));
9811       attributes.event_mask = GDK_VISIBILITY_NOTIFY_MASK | GDK_EXPOSURE_MASK | GDK_POINTER_MOTION_MASK;
9812       attributes_mask = GDK_WA_X | GDK_WA_Y | GDK_WA_VISUAL;
9813
9814       tree_view->priv->drag_window = gdk_window_new (tree_view->priv->bin_window,
9815                                                      &attributes,
9816                                                      attributes_mask);
9817       gdk_window_set_user_data (tree_view->priv->drag_window, GTK_WIDGET (tree_view));
9818     }
9819
9820   if (gdk_device_get_source (device) == GDK_SOURCE_KEYBOARD)
9821     {
9822       keyboard = device;
9823       pointer = gdk_device_get_associated_device (device);
9824     }
9825   else
9826     {
9827       pointer = device;
9828       keyboard = gdk_device_get_associated_device (device);
9829     }
9830
9831   gdk_device_ungrab (pointer, GDK_CURRENT_TIME);
9832   gdk_device_ungrab (keyboard, GDK_CURRENT_TIME);
9833
9834   gtk_grab_remove (button);
9835
9836   send_event = gdk_event_new (GDK_LEAVE_NOTIFY);
9837   send_event->crossing.send_event = TRUE;
9838   send_event->crossing.window = g_object_ref (gtk_button_get_event_window (GTK_BUTTON (button)));
9839   send_event->crossing.subwindow = NULL;
9840   send_event->crossing.detail = GDK_NOTIFY_ANCESTOR;
9841   send_event->crossing.time = GDK_CURRENT_TIME;
9842   gdk_event_set_device (send_event, device);
9843
9844   gtk_propagate_event (button, send_event);
9845   gdk_event_free (send_event);
9846
9847   send_event = gdk_event_new (GDK_BUTTON_RELEASE);
9848   send_event->button.window = g_object_ref (gdk_screen_get_root_window (screen));
9849   send_event->button.send_event = TRUE;
9850   send_event->button.time = GDK_CURRENT_TIME;
9851   send_event->button.x = -1;
9852   send_event->button.y = -1;
9853   send_event->button.axes = NULL;
9854   send_event->button.state = 0;
9855   send_event->button.button = 1;
9856   send_event->button.x_root = 0;
9857   send_event->button.y_root = 0;
9858   gdk_event_set_device (send_event, device);
9859
9860   gtk_propagate_event (button, send_event);
9861   gdk_event_free (send_event);
9862
9863   /* Kids, don't try this at home */
9864   g_object_ref (button);
9865   gtk_container_remove (GTK_CONTAINER (tree_view), button);
9866   gtk_widget_set_parent_window (button, tree_view->priv->drag_window);
9867   gtk_widget_set_parent (button, GTK_WIDGET (tree_view));
9868   g_object_unref (button);
9869
9870   gtk_widget_get_allocation (button, &button_allocation);
9871   tree_view->priv->drag_column_x = button_allocation.x;
9872   allocation = button_allocation;
9873   allocation.x = 0;
9874   gtk_widget_size_allocate (button, &allocation);
9875   gtk_widget_set_parent_window (button, tree_view->priv->drag_window);
9876
9877   tree_view->priv->drag_column = column;
9878   gdk_window_show (tree_view->priv->drag_window);
9879
9880   gtk_widget_grab_focus (GTK_WIDGET (tree_view));
9881   while (gtk_events_pending ())
9882     gtk_main_iteration ();
9883
9884   tree_view->priv->in_column_drag = TRUE;
9885
9886   gdk_device_grab (pointer,
9887                    tree_view->priv->drag_window,
9888                    GDK_OWNERSHIP_NONE,
9889                    FALSE,
9890                    GDK_POINTER_MOTION_MASK|GDK_BUTTON_RELEASE_MASK,
9891                    NULL,
9892                    GDK_CURRENT_TIME);
9893   gdk_device_grab (keyboard,
9894                    tree_view->priv->drag_window,
9895                    GDK_OWNERSHIP_NONE,
9896                    FALSE,
9897                    GDK_KEY_PRESS_MASK|GDK_KEY_RELEASE_MASK,
9898                    NULL,
9899                    GDK_CURRENT_TIME);
9900 }
9901
9902 static void
9903 gtk_tree_view_queue_draw_arrow (GtkTreeView        *tree_view,
9904                                 GtkRBTree          *tree,
9905                                 GtkRBNode          *node)
9906 {
9907   GtkAllocation allocation;
9908   GdkRectangle rect;
9909
9910   if (!gtk_widget_get_realized (GTK_WIDGET (tree_view)))
9911     return;
9912
9913   gtk_widget_get_allocation (GTK_WIDGET (tree_view), &allocation);
9914   rect.x = 0;
9915   rect.width = MAX (tree_view->priv->expander_size, MAX (tree_view->priv->width, allocation.width));
9916
9917   rect.y = gtk_tree_view_get_row_y_offset (tree_view, tree, node);
9918   rect.height = gtk_tree_view_get_row_height (tree_view, node);
9919
9920   gdk_window_invalidate_rect (tree_view->priv->bin_window, &rect, TRUE);
9921 }
9922
9923 void
9924 _gtk_tree_view_queue_draw_node (GtkTreeView        *tree_view,
9925                                 GtkRBTree          *tree,
9926                                 GtkRBNode          *node,
9927                                 const GdkRectangle *clip_rect)
9928 {
9929   GtkAllocation allocation;
9930   GdkRectangle rect;
9931
9932   if (!gtk_widget_get_realized (GTK_WIDGET (tree_view)))
9933     return;
9934
9935   gtk_widget_get_allocation (GTK_WIDGET (tree_view), &allocation);
9936   rect.x = 0;
9937   rect.width = MAX (tree_view->priv->width, allocation.width);
9938
9939   rect.y = gtk_tree_view_get_row_y_offset (tree_view, tree, node);
9940   rect.height = gtk_tree_view_get_row_height (tree_view, node);
9941
9942   if (clip_rect)
9943     {
9944       GdkRectangle new_rect;
9945
9946       gdk_rectangle_intersect (clip_rect, &rect, &new_rect);
9947
9948       gdk_window_invalidate_rect (tree_view->priv->bin_window, &new_rect, TRUE);
9949     }
9950   else
9951     {
9952       gdk_window_invalidate_rect (tree_view->priv->bin_window, &rect, TRUE);
9953     }
9954 }
9955
9956 static inline gint
9957 gtk_tree_view_get_effective_header_height (GtkTreeView *tree_view)
9958 {
9959   if (tree_view->priv->headers_visible)
9960     return tree_view->priv->header_height;
9961   /* else */
9962   return 0;
9963 }
9964
9965 gint
9966 _gtk_tree_view_get_header_height (GtkTreeView *tree_view)
9967 {
9968   return tree_view->priv->header_height;
9969 }
9970
9971 void
9972 _gtk_tree_view_get_row_separator_func (GtkTreeView                 *tree_view,
9973                                        GtkTreeViewRowSeparatorFunc *func,
9974                                        gpointer                    *data)
9975 {
9976   *func = tree_view->priv->row_separator_func;
9977   *data = tree_view->priv->row_separator_data;
9978 }
9979
9980 GtkTreePath *
9981 _gtk_tree_view_get_anchor_path (GtkTreeView *tree_view)
9982 {
9983   if (tree_view->priv->anchor)
9984     return gtk_tree_row_reference_get_path (tree_view->priv->anchor);
9985
9986   return NULL;
9987 }
9988
9989 void
9990 _gtk_tree_view_set_anchor_path (GtkTreeView *tree_view,
9991                                 GtkTreePath *anchor_path)
9992 {
9993   if (tree_view->priv->anchor)
9994     {
9995       gtk_tree_row_reference_free (tree_view->priv->anchor);
9996       tree_view->priv->anchor = NULL;
9997     }
9998
9999   if (anchor_path && tree_view->priv->model)
10000     tree_view->priv->anchor =
10001       gtk_tree_row_reference_new_proxy (G_OBJECT (tree_view),
10002                                         tree_view->priv->model, anchor_path);
10003 }
10004
10005 GtkRBTree *
10006 _gtk_tree_view_get_rbtree (GtkTreeView *tree_view)
10007 {
10008   return tree_view->priv->tree;
10009 }
10010
10011 GdkWindow *
10012 _gtk_tree_view_get_header_window (GtkTreeView *tree_view)
10013 {
10014   return tree_view->priv->header_window;
10015 }
10016
10017 void
10018 _gtk_tree_view_set_focus_column (GtkTreeView       *tree_view,
10019                                  GtkTreeViewColumn *column)
10020 {
10021   tree_view->priv->focus_column = column;
10022 }
10023
10024
10025 static void
10026 gtk_tree_view_queue_draw_path (GtkTreeView        *tree_view,
10027                                GtkTreePath        *path,
10028                                const GdkRectangle *clip_rect)
10029 {
10030   GtkRBTree *tree = NULL;
10031   GtkRBNode *node = NULL;
10032
10033   _gtk_tree_view_find_node (tree_view, path, &tree, &node);
10034
10035   if (tree)
10036     _gtk_tree_view_queue_draw_node (tree_view, tree, node, clip_rect);
10037 }
10038
10039 /* x and y are the mouse position
10040  */
10041 static void
10042 gtk_tree_view_draw_arrow (GtkTreeView *tree_view,
10043                           cairo_t     *cr,
10044                           GtkRBTree   *tree,
10045                           GtkRBNode   *node)
10046 {
10047   GdkRectangle area;
10048   GtkStateFlags state = 0;
10049   GtkStyleContext *context;
10050   GtkWidget *widget;
10051   gint x_offset = 0;
10052   gint x2;
10053   gint vertical_separator;
10054   gint expander_size;
10055   GtkCellRendererState flags;
10056
10057   widget = GTK_WIDGET (tree_view);
10058   context = gtk_widget_get_style_context (widget);
10059
10060   gtk_widget_style_get (widget,
10061                         "vertical-separator", &vertical_separator,
10062                         NULL);
10063   expander_size = tree_view->priv->expander_size - EXPANDER_EXTRA_PADDING;
10064
10065   if (! GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_PARENT))
10066     return;
10067
10068   gtk_tree_view_get_arrow_xrange (tree_view, tree, &x_offset, &x2);
10069
10070   area.x = x_offset;
10071   area.y = gtk_tree_view_get_cell_area_y_offset (tree_view, tree, node,
10072                                                  vertical_separator);
10073   area.width = expander_size;
10074   area.height = gtk_tree_view_get_cell_area_height (tree_view, node,
10075                                                     vertical_separator);
10076
10077   if (!gtk_widget_get_sensitive (widget))
10078     state |= GTK_STATE_FLAG_INSENSITIVE;
10079   else
10080     {
10081       flags = 0;
10082
10083       if (GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_SELECTED))
10084         flags |= GTK_CELL_RENDERER_SELECTED;
10085
10086       state = gtk_cell_renderer_get_state (NULL, widget, flags);
10087
10088       if (node == tree_view->priv->prelight_node &&
10089           tree_view->priv->arrow_prelit)
10090         state |= GTK_STATE_FLAG_PRELIGHT;
10091     }
10092
10093   if (node->children != NULL)
10094     state |= GTK_STATE_FLAG_ACTIVE;
10095
10096   gtk_style_context_save (context);
10097
10098   gtk_style_context_set_state (context, state);
10099   gtk_style_context_add_class (context, GTK_STYLE_CLASS_EXPANDER);
10100
10101   gtk_style_context_push_animatable_region (context, node);
10102
10103   gtk_render_expander (context, cr,
10104                        area.x, area.y,
10105                        area.width, area.height);
10106
10107   gtk_style_context_pop_animatable_region (context);
10108   gtk_style_context_restore (context);
10109 }
10110
10111 static void
10112 gtk_tree_view_focus_to_cursor (GtkTreeView *tree_view)
10113
10114 {
10115   GtkTreePath *cursor_path;
10116
10117   if ((tree_view->priv->tree == NULL) ||
10118       (! gtk_widget_get_realized (GTK_WIDGET (tree_view))))
10119     return;
10120
10121   cursor_path = NULL;
10122   if (tree_view->priv->cursor_node)
10123     cursor_path = _gtk_tree_path_new_from_rbtree (tree_view->priv->cursor_tree,
10124                                                   tree_view->priv->cursor_node);
10125
10126   if (cursor_path == NULL)
10127     {
10128       /* Consult the selection before defaulting to the
10129        * first focusable element
10130        */
10131       GList *selected_rows;
10132       GtkTreeModel *model;
10133       GtkTreeSelection *selection;
10134
10135       selection = gtk_tree_view_get_selection (tree_view);
10136       selected_rows = gtk_tree_selection_get_selected_rows (selection, &model);
10137
10138       if (selected_rows)
10139         {
10140           cursor_path = gtk_tree_path_copy((const GtkTreePath *)(selected_rows->data));
10141           g_list_foreach (selected_rows, (GFunc)gtk_tree_path_free, NULL);
10142           g_list_free (selected_rows);
10143         }
10144       else
10145         {
10146           cursor_path = gtk_tree_path_new_first ();
10147           search_first_focusable_path (tree_view, &cursor_path,
10148                                        TRUE, NULL, NULL);
10149         }
10150
10151       if (cursor_path)
10152         {
10153           if (gtk_tree_selection_get_mode (tree_view->priv->selection) == GTK_SELECTION_MULTIPLE)
10154             gtk_tree_view_real_set_cursor (tree_view, cursor_path, 0);
10155           else
10156             gtk_tree_view_real_set_cursor (tree_view, cursor_path, CLEAR_AND_SELECT);
10157         }
10158     }
10159
10160   if (cursor_path)
10161     {
10162       tree_view->priv->draw_keyfocus = TRUE;
10163
10164       gtk_tree_view_queue_draw_path (tree_view, cursor_path, NULL);
10165       gtk_tree_path_free (cursor_path);
10166
10167       if (tree_view->priv->focus_column == NULL)
10168         {
10169           GList *list;
10170           for (list = tree_view->priv->columns; list; list = list->next)
10171             {
10172               if (gtk_tree_view_column_get_visible (GTK_TREE_VIEW_COLUMN (list->data)))
10173                 {
10174                   GtkCellArea *cell_area;
10175
10176                   tree_view->priv->focus_column = GTK_TREE_VIEW_COLUMN (list->data);
10177
10178                   /* This happens when the treeview initially grabs focus and there
10179                    * is no column in focus, here we explicitly focus into the first cell */
10180                   cell_area = gtk_cell_layout_get_area (GTK_CELL_LAYOUT (tree_view->priv->focus_column));
10181                   if (!gtk_cell_area_get_focus_cell (cell_area))
10182                     {
10183                       gboolean rtl;
10184
10185                       rtl = (gtk_widget_get_direction (GTK_WIDGET (tree_view)) == GTK_TEXT_DIR_RTL);
10186                       gtk_cell_area_focus (cell_area,
10187                                            rtl ? GTK_DIR_LEFT : GTK_DIR_RIGHT);
10188                     }
10189
10190                   break;
10191                 }
10192             }
10193         }
10194     }
10195 }
10196
10197 static void
10198 gtk_tree_view_move_cursor_up_down (GtkTreeView *tree_view,
10199                                    gint         count)
10200 {
10201   gint selection_count;
10202   GtkRBTree *new_cursor_tree = NULL;
10203   GtkRBNode *new_cursor_node = NULL;
10204   GtkTreePath *cursor_path = NULL;
10205   gboolean grab_focus = TRUE;
10206   gboolean selectable;
10207   GtkDirectionType direction;
10208   GtkCellArea *cell_area = NULL;
10209   GtkCellRenderer *last_focus_cell = NULL;
10210   GtkTreeIter iter;
10211
10212   if (! gtk_widget_has_focus (GTK_WIDGET (tree_view)))
10213     return;
10214
10215   if (tree_view->priv->cursor_node == NULL)
10216     return;
10217
10218   cursor_path = _gtk_tree_path_new_from_rbtree (tree_view->priv->cursor_tree,
10219                                                 tree_view->priv->cursor_node);
10220
10221   direction = count < 0 ? GTK_DIR_UP : GTK_DIR_DOWN;
10222
10223   if (tree_view->priv->focus_column)
10224     cell_area = gtk_cell_layout_get_area (GTK_CELL_LAYOUT (tree_view->priv->focus_column));
10225
10226   /* If focus stays in the area for this row, then just return for this round */
10227   if (cell_area && (count == -1 || count == 1) &&
10228       gtk_tree_model_get_iter (tree_view->priv->model, &iter, cursor_path))
10229     {
10230       gtk_tree_view_column_cell_set_cell_data (tree_view->priv->focus_column,
10231                                                tree_view->priv->model,
10232                                                &iter,
10233                                                GTK_RBNODE_FLAG_SET (tree_view->priv->cursor_node, GTK_RBNODE_IS_PARENT),
10234                                                tree_view->priv->cursor_node->children ? TRUE : FALSE);
10235
10236       /* Save the last cell that had focus, if we hit the end of the view we'll give
10237        * focus back to it. */
10238       last_focus_cell = gtk_cell_area_get_focus_cell (cell_area);
10239
10240       /* If focus stays in the area, no need to change the cursor row */
10241       if (gtk_cell_area_focus (cell_area, direction))
10242         return;
10243     }
10244
10245   selection_count = gtk_tree_selection_count_selected_rows (tree_view->priv->selection);
10246   selectable = _gtk_tree_selection_row_is_selectable (tree_view->priv->selection,
10247                                                       tree_view->priv->cursor_node,
10248                                                       cursor_path);
10249
10250   if (selection_count == 0
10251       && gtk_tree_selection_get_mode (tree_view->priv->selection) != GTK_SELECTION_NONE
10252       && !tree_view->priv->modify_selection_pressed
10253       && selectable)
10254     {
10255       /* Don't move the cursor, but just select the current node */
10256       new_cursor_tree = tree_view->priv->cursor_tree;
10257       new_cursor_node = tree_view->priv->cursor_node;
10258     }
10259   else
10260     {
10261       if (count == -1)
10262         _gtk_rbtree_prev_full (tree_view->priv->cursor_tree, tree_view->priv->cursor_node,
10263                                &new_cursor_tree, &new_cursor_node);
10264       else
10265         _gtk_rbtree_next_full (tree_view->priv->cursor_tree, tree_view->priv->cursor_node,
10266                                &new_cursor_tree, &new_cursor_node);
10267     }
10268
10269   gtk_tree_path_free (cursor_path);
10270
10271   if (new_cursor_node)
10272     {
10273       cursor_path = _gtk_tree_path_new_from_rbtree (new_cursor_tree, new_cursor_node);
10274
10275       search_first_focusable_path (tree_view, &cursor_path,
10276                                    (count != -1),
10277                                    &new_cursor_tree,
10278                                    &new_cursor_node);
10279
10280       if (cursor_path)
10281         gtk_tree_path_free (cursor_path);
10282     }
10283
10284   /*
10285    * If the list has only one item and multi-selection is set then select
10286    * the row (if not yet selected).
10287    */
10288   if (gtk_tree_selection_get_mode (tree_view->priv->selection) == GTK_SELECTION_MULTIPLE &&
10289       new_cursor_node == NULL)
10290     {
10291       if (count == -1)
10292         _gtk_rbtree_next_full (tree_view->priv->cursor_tree, tree_view->priv->cursor_node,
10293                                &new_cursor_tree, &new_cursor_node);
10294       else
10295         _gtk_rbtree_prev_full (tree_view->priv->cursor_tree, tree_view->priv->cursor_node,
10296                                &new_cursor_tree, &new_cursor_node);
10297
10298       if (new_cursor_node == NULL
10299           && !GTK_RBNODE_FLAG_SET (tree_view->priv->cursor_node, GTK_RBNODE_IS_SELECTED))
10300         {
10301           new_cursor_node = tree_view->priv->cursor_node;
10302           new_cursor_tree = tree_view->priv->cursor_tree;
10303         }
10304       else
10305         {
10306           new_cursor_tree = NULL;
10307           new_cursor_node = NULL;
10308         }
10309     }
10310
10311   if (new_cursor_node)
10312     {
10313       cursor_path = _gtk_tree_path_new_from_rbtree (new_cursor_tree, new_cursor_node);
10314       gtk_tree_view_real_set_cursor (tree_view, cursor_path, CLEAR_AND_SELECT | CLAMP_NODE);
10315       gtk_tree_path_free (cursor_path);
10316
10317       /* Give focus to the area in the new row */
10318       if (cell_area)
10319         gtk_cell_area_focus (cell_area, direction);
10320     }
10321   else
10322     {
10323       gtk_tree_view_clamp_node_visible (tree_view,
10324                                         tree_view->priv->cursor_tree,
10325                                         tree_view->priv->cursor_node);
10326
10327       if (!tree_view->priv->extend_selection_pressed)
10328         {
10329           if (! gtk_widget_keynav_failed (GTK_WIDGET (tree_view),
10330                                           count < 0 ?
10331                                           GTK_DIR_UP : GTK_DIR_DOWN))
10332             {
10333               GtkWidget *toplevel = gtk_widget_get_toplevel (GTK_WIDGET (tree_view));
10334
10335               if (toplevel)
10336                 gtk_widget_child_focus (toplevel,
10337                                         count < 0 ?
10338                                         GTK_DIR_TAB_BACKWARD :
10339                                         GTK_DIR_TAB_FORWARD);
10340
10341               grab_focus = FALSE;
10342             }
10343         }
10344       else
10345         {
10346           gtk_widget_error_bell (GTK_WIDGET (tree_view));
10347         }
10348
10349       if (cell_area)
10350         gtk_cell_area_set_focus_cell (cell_area, last_focus_cell);
10351     }
10352
10353   if (grab_focus)
10354     gtk_widget_grab_focus (GTK_WIDGET (tree_view));
10355 }
10356
10357 static void
10358 gtk_tree_view_move_cursor_page_up_down (GtkTreeView *tree_view,
10359                                         gint         count)
10360 {
10361   GtkTreePath *old_cursor_path = NULL;
10362   GtkTreePath *cursor_path = NULL;
10363   GtkRBTree *start_cursor_tree = NULL;
10364   GtkRBNode *start_cursor_node = NULL;
10365   GtkRBTree *cursor_tree;
10366   GtkRBNode *cursor_node;
10367   gint y;
10368   gint window_y;
10369   gint vertical_separator;
10370
10371   if (!gtk_widget_has_focus (GTK_WIDGET (tree_view)))
10372     return;
10373
10374   if (tree_view->priv->cursor_node == NULL)
10375     return;
10376
10377   old_cursor_path = _gtk_tree_path_new_from_rbtree (tree_view->priv->cursor_tree,
10378                                                     tree_view->priv->cursor_node);
10379
10380   gtk_widget_style_get (GTK_WIDGET (tree_view), "vertical-separator", &vertical_separator, NULL);
10381
10382   y = _gtk_rbtree_node_find_offset (tree_view->priv->cursor_tree, tree_view->priv->cursor_node);
10383   window_y = RBTREE_Y_TO_TREE_WINDOW_Y (tree_view, y);
10384   y += tree_view->priv->cursor_offset;
10385   y += count * (int)gtk_adjustment_get_page_increment (tree_view->priv->vadjustment);
10386   y = CLAMP (y, (gint)gtk_adjustment_get_lower (tree_view->priv->vadjustment),  (gint)gtk_adjustment_get_upper (tree_view->priv->vadjustment) - vertical_separator);
10387
10388   if (y >= tree_view->priv->height)
10389     y = tree_view->priv->height - 1;
10390
10391   tree_view->priv->cursor_offset =
10392     _gtk_rbtree_find_offset (tree_view->priv->tree, y,
10393                              &cursor_tree, &cursor_node);
10394
10395   if (cursor_tree == NULL)
10396     {
10397       /* FIXME: we lost the cursor.  Should we try to get one? */
10398       gtk_tree_path_free (old_cursor_path);
10399       return;
10400     }
10401
10402   if (tree_view->priv->cursor_offset
10403       > gtk_tree_view_get_row_height (tree_view, cursor_node))
10404     {
10405       _gtk_rbtree_next_full (cursor_tree, cursor_node,
10406                              &cursor_tree, &cursor_node);
10407       tree_view->priv->cursor_offset -= gtk_tree_view_get_row_height (tree_view, cursor_node);
10408     }
10409
10410   y -= tree_view->priv->cursor_offset;
10411   cursor_path = _gtk_tree_path_new_from_rbtree (cursor_tree, cursor_node);
10412
10413   start_cursor_tree = cursor_tree;
10414   start_cursor_node = cursor_node;
10415
10416   if (! search_first_focusable_path (tree_view, &cursor_path,
10417                                      (count != -1),
10418                                      &cursor_tree, &cursor_node))
10419     {
10420       /* It looks like we reached the end of the view without finding
10421        * a focusable row.  We will step backwards to find the last
10422        * focusable row.
10423        */
10424       cursor_tree = start_cursor_tree;
10425       cursor_node = start_cursor_node;
10426       cursor_path = _gtk_tree_path_new_from_rbtree (cursor_tree, cursor_node);
10427
10428       search_first_focusable_path (tree_view, &cursor_path,
10429                                    (count == -1),
10430                                    &cursor_tree, &cursor_node);
10431     }
10432
10433   if (!cursor_path)
10434     goto cleanup;
10435
10436   /* update y */
10437   y = _gtk_rbtree_node_find_offset (cursor_tree, cursor_node);
10438
10439   gtk_tree_view_real_set_cursor (tree_view, cursor_path, CLEAR_AND_SELECT);
10440
10441   y -= window_y;
10442   gtk_tree_view_scroll_to_point (tree_view, -1, y);
10443   gtk_tree_view_clamp_node_visible (tree_view, cursor_tree, cursor_node);
10444   _gtk_tree_view_queue_draw_node (tree_view, cursor_tree, cursor_node, NULL);
10445
10446   if (!gtk_tree_path_compare (old_cursor_path, cursor_path))
10447     gtk_widget_error_bell (GTK_WIDGET (tree_view));
10448
10449   gtk_widget_grab_focus (GTK_WIDGET (tree_view));
10450
10451 cleanup:
10452   gtk_tree_path_free (old_cursor_path);
10453   gtk_tree_path_free (cursor_path);
10454 }
10455
10456 static void
10457 gtk_tree_view_move_cursor_left_right (GtkTreeView *tree_view,
10458                                       gint         count)
10459 {
10460   GtkTreePath *cursor_path = NULL;
10461   GtkTreeViewColumn *column;
10462   GtkTreeIter iter;
10463   GList *list;
10464   gboolean found_column = FALSE;
10465   gboolean rtl;
10466   GtkDirectionType direction;
10467   GtkCellArea     *cell_area;
10468   GtkCellRenderer *last_focus_cell = NULL;
10469   GtkCellArea     *last_focus_area = NULL;
10470
10471   rtl = (gtk_widget_get_direction (GTK_WIDGET (tree_view)) == GTK_TEXT_DIR_RTL);
10472
10473   if (!gtk_widget_has_focus (GTK_WIDGET (tree_view)))
10474     return;
10475
10476   if (tree_view->priv->cursor_node == NULL)
10477     return;
10478
10479   cursor_path = _gtk_tree_path_new_from_rbtree (tree_view->priv->cursor_tree,
10480                                                 tree_view->priv->cursor_node);
10481
10482   if (gtk_tree_model_get_iter (tree_view->priv->model, &iter, cursor_path) == FALSE)
10483     {
10484       gtk_tree_path_free (cursor_path);
10485       return;
10486     }
10487   gtk_tree_path_free (cursor_path);
10488
10489   list = rtl ? g_list_last (tree_view->priv->columns) : g_list_first (tree_view->priv->columns);
10490   if (tree_view->priv->focus_column)
10491     {
10492       /* Save the cell/area we are moving focus from, if moving the cursor
10493        * by one step hits the end we'll set focus back here */
10494       last_focus_area = gtk_cell_layout_get_area (GTK_CELL_LAYOUT (tree_view->priv->focus_column));
10495       last_focus_cell = gtk_cell_area_get_focus_cell (last_focus_area);
10496
10497       for (; list; list = (rtl ? list->prev : list->next))
10498         {
10499           if (list->data == tree_view->priv->focus_column)
10500             break;
10501         }
10502     }
10503
10504   direction = count > 0 ? GTK_DIR_RIGHT : GTK_DIR_LEFT;
10505
10506   while (list)
10507     {
10508       column = list->data;
10509       if (gtk_tree_view_column_get_visible (column) == FALSE)
10510         goto loop_end;
10511
10512       gtk_tree_view_column_cell_set_cell_data (column,
10513                                                tree_view->priv->model,
10514                                                &iter,
10515                                                GTK_RBNODE_FLAG_SET (tree_view->priv->cursor_node, GTK_RBNODE_IS_PARENT),
10516                                                tree_view->priv->cursor_node->children ? TRUE : FALSE);
10517
10518       cell_area = gtk_cell_layout_get_area (GTK_CELL_LAYOUT (column));
10519       if (gtk_cell_area_focus (cell_area, direction))
10520         {
10521           tree_view->priv->focus_column = column;
10522           found_column = TRUE;
10523           break;
10524         }
10525
10526     loop_end:
10527       if (count == 1)
10528         list = rtl ? list->prev : list->next;
10529       else
10530         list = rtl ? list->next : list->prev;
10531     }
10532
10533   if (found_column)
10534     {
10535       if (!gtk_tree_view_has_can_focus_cell (tree_view))
10536         _gtk_tree_view_queue_draw_node (tree_view,
10537                                         tree_view->priv->cursor_tree,
10538                                         tree_view->priv->cursor_node,
10539                                         NULL);
10540       g_signal_emit (tree_view, tree_view_signals[CURSOR_CHANGED], 0);
10541       gtk_widget_grab_focus (GTK_WIDGET (tree_view));
10542     }
10543   else
10544     {
10545       gtk_widget_error_bell (GTK_WIDGET (tree_view));
10546
10547       if (last_focus_area)
10548         gtk_cell_area_set_focus_cell (last_focus_area, last_focus_cell);
10549     }
10550
10551   gtk_tree_view_clamp_column_visible (tree_view,
10552                                       tree_view->priv->focus_column, TRUE);
10553 }
10554
10555 static void
10556 gtk_tree_view_move_cursor_start_end (GtkTreeView *tree_view,
10557                                      gint         count)
10558 {
10559   GtkRBTree *cursor_tree;
10560   GtkRBNode *cursor_node;
10561   GtkTreePath *path;
10562   GtkTreePath *old_path;
10563
10564   if (!gtk_widget_has_focus (GTK_WIDGET (tree_view)))
10565     return;
10566
10567   g_return_if_fail (tree_view->priv->tree != NULL);
10568
10569   gtk_tree_view_get_cursor (tree_view, &old_path, NULL);
10570
10571   cursor_tree = tree_view->priv->tree;
10572
10573   if (count == -1)
10574     {
10575       cursor_node = _gtk_rbtree_first (cursor_tree);
10576
10577       /* Now go forward to find the first focusable row. */
10578       path = _gtk_tree_path_new_from_rbtree (cursor_tree, cursor_node);
10579       search_first_focusable_path (tree_view, &path,
10580                                    TRUE, &cursor_tree, &cursor_node);
10581     }
10582   else
10583     {
10584       cursor_node = cursor_tree->root;
10585
10586       do
10587         {
10588           while (cursor_node && !_gtk_rbtree_is_nil (cursor_node->right))
10589             cursor_node = cursor_node->right;
10590           if (cursor_node->children == NULL)
10591             break;
10592
10593           cursor_tree = cursor_node->children;
10594           cursor_node = cursor_tree->root;
10595         }
10596       while (1);
10597
10598       /* Now go backwards to find last focusable row. */
10599       path = _gtk_tree_path_new_from_rbtree (cursor_tree, cursor_node);
10600       search_first_focusable_path (tree_view, &path,
10601                                    FALSE, &cursor_tree, &cursor_node);
10602     }
10603
10604   if (!path)
10605     goto cleanup;
10606
10607   if (gtk_tree_path_compare (old_path, path))
10608     {
10609       gtk_tree_view_real_set_cursor (tree_view, path, CLEAR_AND_SELECT | CLAMP_NODE);
10610       gtk_widget_grab_focus (GTK_WIDGET (tree_view));
10611     }
10612   else
10613     {
10614       gtk_widget_error_bell (GTK_WIDGET (tree_view));
10615     }
10616
10617 cleanup:
10618   gtk_tree_path_free (old_path);
10619   gtk_tree_path_free (path);
10620 }
10621
10622 static gboolean
10623 gtk_tree_view_real_select_all (GtkTreeView *tree_view)
10624 {
10625   if (!gtk_widget_has_focus (GTK_WIDGET (tree_view)))
10626     return FALSE;
10627
10628   if (gtk_tree_selection_get_mode (tree_view->priv->selection) != GTK_SELECTION_MULTIPLE)
10629     return FALSE;
10630
10631   gtk_tree_selection_select_all (tree_view->priv->selection);
10632
10633   return TRUE;
10634 }
10635
10636 static gboolean
10637 gtk_tree_view_real_unselect_all (GtkTreeView *tree_view)
10638 {
10639   if (!gtk_widget_has_focus (GTK_WIDGET (tree_view)))
10640     return FALSE;
10641
10642   if (gtk_tree_selection_get_mode (tree_view->priv->selection) != GTK_SELECTION_MULTIPLE)
10643     return FALSE;
10644
10645   gtk_tree_selection_unselect_all (tree_view->priv->selection);
10646
10647   return TRUE;
10648 }
10649
10650 static gboolean
10651 gtk_tree_view_real_select_cursor_row (GtkTreeView *tree_view,
10652                                       gboolean     start_editing)
10653 {
10654   GtkRBTree *new_tree = NULL;
10655   GtkRBNode *new_node = NULL;
10656   GtkRBTree *cursor_tree = NULL;
10657   GtkRBNode *cursor_node = NULL;
10658   GtkTreePath *cursor_path = NULL;
10659   GtkTreeSelectMode mode = 0;
10660
10661   if (!gtk_widget_has_focus (GTK_WIDGET (tree_view)))
10662     return FALSE;
10663
10664   if (tree_view->priv->cursor_node == NULL)
10665     return FALSE;
10666
10667   cursor_path = _gtk_tree_path_new_from_rbtree (tree_view->priv->cursor_tree,
10668                                                 tree_view->priv->cursor_node);
10669
10670   _gtk_tree_view_find_node (tree_view, cursor_path,
10671                             &cursor_tree, &cursor_node);
10672
10673   if (cursor_tree == NULL)
10674     {
10675       gtk_tree_path_free (cursor_path);
10676       return FALSE;
10677     }
10678
10679   if (!tree_view->priv->extend_selection_pressed && start_editing &&
10680       tree_view->priv->focus_column)
10681     {
10682       if (gtk_tree_view_start_editing (tree_view, cursor_path, FALSE))
10683         {
10684           gtk_tree_path_free (cursor_path);
10685           return TRUE;
10686         }
10687     }
10688
10689   if (tree_view->priv->modify_selection_pressed)
10690     mode |= GTK_TREE_SELECT_MODE_TOGGLE;
10691   if (tree_view->priv->extend_selection_pressed)
10692     mode |= GTK_TREE_SELECT_MODE_EXTEND;
10693
10694   _gtk_tree_selection_internal_select_node (tree_view->priv->selection,
10695                                             cursor_node,
10696                                             cursor_tree,
10697                                             cursor_path,
10698                                             mode,
10699                                             FALSE);
10700
10701   /* We bail out if the original (tree, node) don't exist anymore after
10702    * handling the selection-changed callback.  We do return TRUE because
10703    * the key press has been handled at this point.
10704    */
10705   _gtk_tree_view_find_node (tree_view, cursor_path, &new_tree, &new_node);
10706
10707   if (cursor_tree != new_tree || cursor_node != new_node)
10708     return FALSE;
10709
10710   gtk_tree_view_clamp_node_visible (tree_view, cursor_tree, cursor_node);
10711
10712   gtk_widget_grab_focus (GTK_WIDGET (tree_view));
10713   _gtk_tree_view_queue_draw_node (tree_view, cursor_tree, cursor_node, NULL);
10714
10715   if (!tree_view->priv->extend_selection_pressed)
10716     gtk_tree_view_row_activated (tree_view, cursor_path,
10717                                  tree_view->priv->focus_column);
10718
10719   gtk_tree_path_free (cursor_path);
10720
10721   return TRUE;
10722 }
10723
10724 static gboolean
10725 gtk_tree_view_real_toggle_cursor_row (GtkTreeView *tree_view)
10726 {
10727   GtkRBTree *new_tree = NULL;
10728   GtkRBNode *new_node = NULL;
10729   GtkRBTree *cursor_tree = NULL;
10730   GtkRBNode *cursor_node = NULL;
10731   GtkTreePath *cursor_path = NULL;
10732
10733   if (!gtk_widget_has_focus (GTK_WIDGET (tree_view)))
10734     return FALSE;
10735
10736   if (tree_view->priv->cursor_node == NULL)
10737     return FALSE;
10738
10739   cursor_path = _gtk_tree_path_new_from_rbtree (tree_view->priv->cursor_tree,
10740                                                 tree_view->priv->cursor_node);
10741
10742   _gtk_tree_selection_internal_select_node (tree_view->priv->selection,
10743                                             cursor_node,
10744                                             cursor_tree,
10745                                             cursor_path,
10746                                             GTK_TREE_SELECT_MODE_TOGGLE,
10747                                             FALSE);
10748
10749   /* We bail out if the original (tree, node) don't exist anymore after
10750    * handling the selection-changed callback.  We do return TRUE because
10751    * the key press has been handled at this point.
10752    */
10753   _gtk_tree_view_find_node (tree_view, cursor_path, &new_tree, &new_node);
10754
10755   if (tree_view->priv->cursor_node != new_node)
10756     return FALSE;
10757
10758   gtk_tree_view_clamp_node_visible (tree_view,
10759                                     tree_view->priv->cursor_tree,
10760                                     tree_view->priv->cursor_node);
10761
10762   gtk_widget_grab_focus (GTK_WIDGET (tree_view));
10763   gtk_tree_view_queue_draw_path (tree_view, cursor_path, NULL);
10764   gtk_tree_path_free (cursor_path);
10765
10766   return TRUE;
10767 }
10768
10769 static gboolean
10770 gtk_tree_view_real_expand_collapse_cursor_row (GtkTreeView *tree_view,
10771                                                gboolean     logical,
10772                                                gboolean     expand,
10773                                                gboolean     open_all)
10774 {
10775   GtkTreePath *cursor_path = NULL;
10776
10777   if (!gtk_widget_has_focus (GTK_WIDGET (tree_view)))
10778     return FALSE;
10779
10780   if (tree_view->priv->cursor_node == NULL)
10781     return FALSE;
10782
10783   cursor_path = _gtk_tree_path_new_from_rbtree (tree_view->priv->cursor_tree,
10784                                                 tree_view->priv->cursor_node);
10785
10786   /* Don't handle the event if we aren't an expander */
10787   if (!GTK_RBNODE_FLAG_SET (tree_view->priv->cursor_node, GTK_RBNODE_IS_PARENT))
10788     return FALSE;
10789
10790   if (!logical
10791       && gtk_widget_get_direction (GTK_WIDGET (tree_view)) == GTK_TEXT_DIR_RTL)
10792     expand = !expand;
10793
10794   if (expand)
10795     gtk_tree_view_real_expand_row (tree_view,
10796                                    cursor_path,
10797                                    tree_view->priv->cursor_tree,
10798                                    tree_view->priv->cursor_node,
10799                                    open_all,
10800                                    TRUE);
10801   else
10802     gtk_tree_view_real_collapse_row (tree_view,
10803                                      cursor_path,
10804                                      tree_view->priv->cursor_tree,
10805                                      tree_view->priv->cursor_node,
10806                                      TRUE);
10807
10808   gtk_tree_path_free (cursor_path);
10809
10810   return TRUE;
10811 }
10812
10813 static gboolean
10814 gtk_tree_view_real_select_cursor_parent (GtkTreeView *tree_view)
10815 {
10816   GtkTreePath *cursor_path = NULL;
10817   GdkModifierType state;
10818
10819   if (!gtk_widget_has_focus (GTK_WIDGET (tree_view)))
10820     goto out;
10821
10822   if (tree_view->priv->cursor_node == NULL)
10823     goto out;
10824
10825   cursor_path = _gtk_tree_path_new_from_rbtree (tree_view->priv->cursor_tree,
10826                                                 tree_view->priv->cursor_node);
10827
10828   if (tree_view->priv->cursor_tree->parent_node)
10829     {
10830       gtk_tree_view_queue_draw_path (tree_view, cursor_path, NULL);
10831
10832       gtk_tree_path_up (cursor_path);
10833
10834       if (gtk_get_current_event_state (&state))
10835         {
10836           GdkModifierType modify_mod_mask;
10837
10838           modify_mod_mask =
10839             gtk_widget_get_modifier_mask (GTK_WIDGET (tree_view),
10840                                           GDK_MODIFIER_INTENT_MODIFY_SELECTION);
10841
10842           if ((state & modify_mod_mask) == modify_mod_mask)
10843             tree_view->priv->modify_selection_pressed = TRUE;
10844         }
10845
10846       gtk_tree_view_real_set_cursor (tree_view, cursor_path, CLEAR_AND_SELECT | CLAMP_NODE);
10847       gtk_tree_path_free (cursor_path);
10848
10849       gtk_widget_grab_focus (GTK_WIDGET (tree_view));
10850
10851       tree_view->priv->modify_selection_pressed = FALSE;
10852
10853       return TRUE;
10854     }
10855
10856  out:
10857
10858   tree_view->priv->search_entry_avoid_unhandled_binding = TRUE;
10859   return FALSE;
10860 }
10861
10862 static gboolean
10863 gtk_tree_view_search_entry_flush_timeout (GtkTreeView *tree_view)
10864 {
10865   gtk_tree_view_search_dialog_hide (tree_view->priv->search_window, tree_view, NULL);
10866   tree_view->priv->typeselect_flush_timeout = 0;
10867
10868   return FALSE;
10869 }
10870
10871 /* Cut and paste from gtkwindow.c */
10872 static void
10873 send_focus_change (GtkWidget *widget,
10874                    GdkDevice *device,
10875                    gboolean   in)
10876 {
10877   GdkDeviceManager *device_manager;
10878   GList *devices, *d;
10879
10880   device_manager = gdk_display_get_device_manager (gtk_widget_get_display (widget));
10881   devices = gdk_device_manager_list_devices (device_manager, GDK_DEVICE_TYPE_MASTER);
10882   devices = g_list_concat (devices, gdk_device_manager_list_devices (device_manager, GDK_DEVICE_TYPE_SLAVE));
10883   devices = g_list_concat (devices, gdk_device_manager_list_devices (device_manager, GDK_DEVICE_TYPE_FLOATING));
10884
10885   for (d = devices; d; d = d->next)
10886     {
10887       GdkDevice *dev = d->data;
10888       GdkEvent *fevent;
10889       GdkWindow *window;
10890
10891       if (gdk_device_get_source (dev) != GDK_SOURCE_KEYBOARD)
10892         continue;
10893
10894       window = gtk_widget_get_window (widget);
10895
10896       /* Skip non-master keyboards that haven't
10897        * selected for events from this window
10898        */
10899       if (gdk_device_get_device_type (dev) != GDK_DEVICE_TYPE_MASTER &&
10900           !gdk_window_get_device_events (window, dev))
10901         continue;
10902
10903       fevent = gdk_event_new (GDK_FOCUS_CHANGE);
10904
10905       fevent->focus_change.type = GDK_FOCUS_CHANGE;
10906       fevent->focus_change.window = g_object_ref (window);
10907       fevent->focus_change.in = in;
10908       gdk_event_set_device (fevent, device);
10909
10910       gtk_widget_send_focus_change (widget, fevent);
10911
10912       gdk_event_free (fevent);
10913     }
10914
10915   g_list_free (devices);
10916 }
10917
10918 static void
10919 gtk_tree_view_ensure_interactive_directory (GtkTreeView *tree_view)
10920 {
10921   GtkWidget *frame, *vbox, *toplevel;
10922   GdkScreen *screen;
10923
10924   if (tree_view->priv->search_custom_entry_set)
10925     return;
10926
10927   toplevel = gtk_widget_get_toplevel (GTK_WIDGET (tree_view));
10928   screen = gtk_widget_get_screen (GTK_WIDGET (tree_view));
10929
10930    if (tree_view->priv->search_window != NULL)
10931      {
10932        if (gtk_window_has_group (GTK_WINDOW (toplevel)))
10933          gtk_window_group_add_window (gtk_window_get_group (GTK_WINDOW (toplevel)),
10934                                       GTK_WINDOW (tree_view->priv->search_window));
10935        else if (gtk_window_has_group (GTK_WINDOW (tree_view->priv->search_window)))
10936          gtk_window_group_remove_window (gtk_window_get_group (GTK_WINDOW (tree_view->priv->search_window)),
10937                                          GTK_WINDOW (tree_view->priv->search_window));
10938
10939        gtk_window_set_screen (GTK_WINDOW (tree_view->priv->search_window), screen);
10940
10941        return;
10942      }
10943
10944   tree_view->priv->search_window = gtk_window_new (GTK_WINDOW_POPUP);
10945   gtk_window_set_screen (GTK_WINDOW (tree_view->priv->search_window), screen);
10946
10947   if (gtk_window_has_group (GTK_WINDOW (toplevel)))
10948     gtk_window_group_add_window (gtk_window_get_group (GTK_WINDOW (toplevel)),
10949                                  GTK_WINDOW (tree_view->priv->search_window));
10950
10951   gtk_window_set_type_hint (GTK_WINDOW (tree_view->priv->search_window),
10952                             GDK_WINDOW_TYPE_HINT_UTILITY);
10953   gtk_window_set_modal (GTK_WINDOW (tree_view->priv->search_window), TRUE);
10954   g_signal_connect (tree_view->priv->search_window, "delete-event",
10955                     G_CALLBACK (gtk_tree_view_search_delete_event),
10956                     tree_view);
10957   g_signal_connect (tree_view->priv->search_window, "key-press-event",
10958                     G_CALLBACK (gtk_tree_view_search_key_press_event),
10959                     tree_view);
10960   g_signal_connect (tree_view->priv->search_window, "button-press-event",
10961                     G_CALLBACK (gtk_tree_view_search_button_press_event),
10962                     tree_view);
10963   g_signal_connect (tree_view->priv->search_window, "scroll-event",
10964                     G_CALLBACK (gtk_tree_view_search_scroll_event),
10965                     tree_view);
10966
10967   frame = gtk_frame_new (NULL);
10968   gtk_frame_set_shadow_type (GTK_FRAME (frame), GTK_SHADOW_ETCHED_IN);
10969   gtk_widget_show (frame);
10970   gtk_container_add (GTK_CONTAINER (tree_view->priv->search_window), frame);
10971
10972   vbox = gtk_box_new (GTK_ORIENTATION_VERTICAL, 0);
10973   gtk_widget_show (vbox);
10974   gtk_container_add (GTK_CONTAINER (frame), vbox);
10975   gtk_container_set_border_width (GTK_CONTAINER (vbox), 3);
10976
10977   /* add entry */
10978   tree_view->priv->search_entry = gtk_entry_new ();
10979   gtk_widget_show (tree_view->priv->search_entry);
10980   g_signal_connect (tree_view->priv->search_entry, "populate-popup",
10981                     G_CALLBACK (gtk_tree_view_search_disable_popdown),
10982                     tree_view);
10983   g_signal_connect (tree_view->priv->search_entry,
10984                     "activate", G_CALLBACK (gtk_tree_view_search_activate),
10985                     tree_view);
10986
10987   g_signal_connect (_gtk_entry_get_im_context (GTK_ENTRY (tree_view->priv->search_entry)),
10988                     "preedit-changed",
10989                     G_CALLBACK (gtk_tree_view_search_preedit_changed),
10990                     tree_view);
10991
10992   gtk_container_add (GTK_CONTAINER (vbox),
10993                      tree_view->priv->search_entry);
10994
10995   gtk_widget_realize (tree_view->priv->search_entry);
10996 }
10997
10998 /* Pops up the interactive search entry.  If keybinding is TRUE then the user
10999  * started this by typing the start_interactive_search keybinding.  Otherwise, it came from
11000  */
11001 static gboolean
11002 gtk_tree_view_real_start_interactive_search (GtkTreeView *tree_view,
11003                                              GdkDevice   *device,
11004                                              gboolean     keybinding)
11005 {
11006   /* We only start interactive search if we have focus or the columns
11007    * have focus.  If one of our children have focus, we don't want to
11008    * start the search.
11009    */
11010   GList *list;
11011   gboolean found_focus = FALSE;
11012   GtkWidgetClass *entry_parent_class;
11013
11014   if (!tree_view->priv->enable_search && !keybinding)
11015     return FALSE;
11016
11017   if (tree_view->priv->search_custom_entry_set)
11018     return FALSE;
11019
11020   if (tree_view->priv->search_window != NULL &&
11021       gtk_widget_get_visible (tree_view->priv->search_window))
11022     return TRUE;
11023
11024   for (list = tree_view->priv->columns; list; list = list->next)
11025     {
11026       GtkTreeViewColumn *column;
11027       GtkWidget         *button;
11028
11029       column = list->data;
11030       if (!gtk_tree_view_column_get_visible (column))
11031         continue;
11032
11033       button = gtk_tree_view_column_get_button (column);
11034       if (gtk_widget_has_focus (button))
11035         {
11036           found_focus = TRUE;
11037           break;
11038         }
11039     }
11040
11041   if (gtk_widget_has_focus (GTK_WIDGET (tree_view)))
11042     found_focus = TRUE;
11043
11044   if (!found_focus)
11045     return FALSE;
11046
11047   if (tree_view->priv->search_column < 0)
11048     return FALSE;
11049
11050   gtk_tree_view_ensure_interactive_directory (tree_view);
11051
11052   if (keybinding)
11053     gtk_entry_set_text (GTK_ENTRY (tree_view->priv->search_entry), "");
11054
11055   /* done, show it */
11056   tree_view->priv->search_position_func (tree_view, tree_view->priv->search_window, tree_view->priv->search_position_user_data);
11057   gtk_widget_show (tree_view->priv->search_window);
11058   if (tree_view->priv->search_entry_changed_id == 0)
11059     {
11060       tree_view->priv->search_entry_changed_id =
11061         g_signal_connect (tree_view->priv->search_entry, "changed",
11062                           G_CALLBACK (gtk_tree_view_search_init),
11063                           tree_view);
11064     }
11065
11066   tree_view->priv->typeselect_flush_timeout =
11067     gdk_threads_add_timeout (GTK_TREE_VIEW_SEARCH_DIALOG_TIMEOUT,
11068                    (GSourceFunc) gtk_tree_view_search_entry_flush_timeout,
11069                    tree_view);
11070
11071   /* Grab focus will select all the text.  We don't want that to happen, so we
11072    * call the parent instance and bypass the selection change.  This is probably
11073    * really non-kosher. */
11074   entry_parent_class = g_type_class_peek_parent (GTK_ENTRY_GET_CLASS (tree_view->priv->search_entry));
11075   (entry_parent_class->grab_focus) (tree_view->priv->search_entry);
11076
11077   /* send focus-in event */
11078   send_focus_change (tree_view->priv->search_entry, device, TRUE);
11079
11080   /* search first matching iter */
11081   gtk_tree_view_search_init (tree_view->priv->search_entry, tree_view);
11082
11083   return TRUE;
11084 }
11085
11086 static gboolean
11087 gtk_tree_view_start_interactive_search (GtkTreeView *tree_view)
11088 {
11089   return gtk_tree_view_real_start_interactive_search (tree_view,
11090                                                       gtk_get_current_event_device (),
11091                                                       TRUE);
11092 }
11093
11094 /* this function returns the new width of the column being resized given
11095  * the column and x position of the cursor; the x cursor position is passed
11096  * in as a pointer and automagicly corrected if it's beyond min/max limits
11097  */
11098 static gint
11099 gtk_tree_view_new_column_width (GtkTreeView *tree_view,
11100                                 gint       i,
11101                                 gint      *x)
11102 {
11103   GtkAllocation allocation;
11104   GtkTreeViewColumn *column;
11105   GtkRequisition button_req;
11106   gint max_width, min_width;
11107   gint width;
11108   gboolean rtl;
11109
11110   /* first translate the x position from widget->window
11111    * to clist->clist_window
11112    */
11113   rtl = (gtk_widget_get_direction (GTK_WIDGET (tree_view)) == GTK_TEXT_DIR_RTL);
11114   column = g_list_nth (tree_view->priv->columns, i)->data;
11115   gtk_widget_get_allocation (gtk_tree_view_column_get_button (column), &allocation);
11116   width = rtl ? (allocation.x + allocation.width - *x) : (*x - allocation.x);
11117
11118   /* Clamp down the value */
11119   min_width = gtk_tree_view_column_get_min_width (column);
11120   if (min_width == -1)
11121     {
11122       gtk_widget_get_preferred_size (gtk_tree_view_column_get_button (column), &button_req, NULL);
11123       width = MAX (button_req.width, width);
11124     }
11125   else
11126     width = MAX (min_width, width);
11127
11128   max_width = gtk_tree_view_column_get_max_width (column);
11129   if (max_width != -1)
11130     width = MIN (width, max_width);
11131
11132   *x = rtl ? (allocation.x + allocation.width - width) : (allocation.x + width);
11133
11134   return width;
11135 }
11136
11137
11138 /* FIXME this adjust_allocation is a big cut-and-paste from
11139  * GtkCList, needs to be some "official" way to do this
11140  * factored out.
11141  */
11142 typedef struct
11143 {
11144   GdkWindow *window;
11145   int dx;
11146   int dy;
11147 } ScrollData;
11148
11149 /* The window to which widget->window is relative */
11150 #define ALLOCATION_WINDOW(widget)               \
11151    (!gtk_widget_get_has_window (widget) ?                   \
11152     gtk_widget_get_window (widget) :                        \
11153     gdk_window_get_parent (gtk_widget_get_window (widget)))
11154
11155 static void
11156 adjust_allocation_recurse (GtkWidget *widget,
11157                            gpointer   data)
11158 {
11159   GtkAllocation allocation;
11160   ScrollData *scroll_data = data;
11161
11162   /* Need to really size allocate instead of just poking
11163    * into widget->allocation if the widget is not realized.
11164    * FIXME someone figure out why this was.
11165    */
11166   gtk_widget_get_allocation (widget, &allocation);
11167   if (!gtk_widget_get_realized (widget))
11168     {
11169       if (gtk_widget_get_visible (widget))
11170         {
11171           GdkRectangle tmp_rectangle = allocation;
11172           tmp_rectangle.x += scroll_data->dx;
11173           tmp_rectangle.y += scroll_data->dy;
11174
11175           gtk_widget_size_allocate (widget, &tmp_rectangle);
11176         }
11177     }
11178   else
11179     {
11180       if (ALLOCATION_WINDOW (widget) == scroll_data->window)
11181         {
11182           allocation.x += scroll_data->dx;
11183           allocation.y += scroll_data->dy;
11184           gtk_widget_set_allocation (widget, &allocation);
11185
11186           if (GTK_IS_CONTAINER (widget))
11187             gtk_container_forall (GTK_CONTAINER (widget),
11188                                   adjust_allocation_recurse,
11189                                   data);
11190         }
11191     }
11192 }
11193
11194 static void
11195 adjust_allocation (GtkWidget *widget,
11196                    int        dx,
11197                    int        dy)
11198 {
11199   ScrollData scroll_data;
11200
11201   if (gtk_widget_get_realized (widget))
11202     scroll_data.window = ALLOCATION_WINDOW (widget);
11203   else
11204     scroll_data.window = NULL;
11205
11206   scroll_data.dx = dx;
11207   scroll_data.dy = dy;
11208
11209   adjust_allocation_recurse (widget, &scroll_data);
11210 }
11211
11212 /* Callbacks */
11213 static void
11214 gtk_tree_view_adjustment_changed (GtkAdjustment *adjustment,
11215                                   GtkTreeView   *tree_view)
11216 {
11217   if (gtk_widget_get_realized (GTK_WIDGET (tree_view)))
11218     {
11219       GtkStyleContext *context;
11220       gint dy;
11221
11222       gdk_window_move (tree_view->priv->bin_window,
11223                        - gtk_adjustment_get_value (tree_view->priv->hadjustment),
11224                        gtk_tree_view_get_effective_header_height (tree_view));
11225       gdk_window_move (tree_view->priv->header_window,
11226                        - gtk_adjustment_get_value (tree_view->priv->hadjustment),
11227                        0);
11228       dy = tree_view->priv->dy - (int) gtk_adjustment_get_value (tree_view->priv->vadjustment);
11229       if (dy)
11230         {
11231           update_prelight (tree_view,
11232                            tree_view->priv->event_last_x,
11233                            tree_view->priv->event_last_y - dy);
11234
11235           if (tree_view->priv->edited_column)
11236             {
11237               GList *list;
11238               GtkTreeViewChild *child = NULL;
11239               GtkCellEditable *edit_widget;
11240               GtkCellArea *area;
11241
11242               area        = gtk_cell_layout_get_area (GTK_CELL_LAYOUT (tree_view->priv->edited_column));
11243               edit_widget = gtk_cell_area_get_edit_widget (area);
11244               if (GTK_IS_WIDGET (edit_widget))
11245                 {
11246                   adjust_allocation (GTK_WIDGET (edit_widget), 0, dy);
11247
11248                   for (list = tree_view->priv->children; list; list = list->next)
11249                     {
11250                       child = (GtkTreeViewChild *)list->data;
11251                       if (child->widget == GTK_WIDGET (edit_widget))
11252                         {
11253                           child->y += dy;
11254                           break;
11255                         }
11256                     }
11257                 }
11258             }
11259         }
11260       gdk_window_scroll (tree_view->priv->bin_window, 0, dy);
11261
11262       context = gtk_widget_get_style_context (GTK_WIDGET (tree_view));
11263       gtk_style_context_scroll_animations (context, tree_view->priv->bin_window, 0, dy);
11264
11265       if (tree_view->priv->dy != (int) gtk_adjustment_get_value (tree_view->priv->vadjustment))
11266         {
11267           /* update our dy and top_row */
11268           tree_view->priv->dy = (int) gtk_adjustment_get_value (tree_view->priv->vadjustment);
11269
11270           if (!tree_view->priv->in_top_row_to_dy)
11271             gtk_tree_view_dy_to_top_row (tree_view);
11272         }
11273
11274       gdk_window_process_updates (tree_view->priv->header_window, TRUE);
11275       gtk_tree_view_bin_process_updates (tree_view);
11276     }
11277 }
11278
11279 \f
11280
11281 /* Public methods
11282  */
11283
11284 /**
11285  * gtk_tree_view_new:
11286  *
11287  * Creates a new #GtkTreeView widget.
11288  *
11289  * Return value: A newly created #GtkTreeView widget.
11290  **/
11291 GtkWidget *
11292 gtk_tree_view_new (void)
11293 {
11294   return g_object_new (GTK_TYPE_TREE_VIEW, NULL);
11295 }
11296
11297 /**
11298  * gtk_tree_view_new_with_model:
11299  * @model: the model.
11300  *
11301  * Creates a new #GtkTreeView widget with the model initialized to @model.
11302  *
11303  * Return value: A newly created #GtkTreeView widget.
11304  **/
11305 GtkWidget *
11306 gtk_tree_view_new_with_model (GtkTreeModel *model)
11307 {
11308   return g_object_new (GTK_TYPE_TREE_VIEW, "model", model, NULL);
11309 }
11310
11311 /* Public Accessors
11312  */
11313
11314 /**
11315  * gtk_tree_view_get_model:
11316  * @tree_view: a #GtkTreeView
11317  *
11318  * Returns the model the #GtkTreeView is based on.  Returns %NULL if the
11319  * model is unset.
11320  *
11321  * Return value: (transfer none): A #GtkTreeModel, or %NULL if none is currently being used.
11322  **/
11323 GtkTreeModel *
11324 gtk_tree_view_get_model (GtkTreeView *tree_view)
11325 {
11326   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), NULL);
11327
11328   return tree_view->priv->model;
11329 }
11330
11331 /**
11332  * gtk_tree_view_set_model:
11333  * @tree_view: A #GtkTreeNode.
11334  * @model: (allow-none): The model.
11335  *
11336  * Sets the model for a #GtkTreeView.  If the @tree_view already has a model
11337  * set, it will remove it before setting the new model.  If @model is %NULL,
11338  * then it will unset the old model.
11339  **/
11340 void
11341 gtk_tree_view_set_model (GtkTreeView  *tree_view,
11342                          GtkTreeModel *model)
11343 {
11344   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
11345   g_return_if_fail (model == NULL || GTK_IS_TREE_MODEL (model));
11346
11347   if (model == tree_view->priv->model)
11348     return;
11349
11350   if (tree_view->priv->scroll_to_path)
11351     {
11352       gtk_tree_row_reference_free (tree_view->priv->scroll_to_path);
11353       tree_view->priv->scroll_to_path = NULL;
11354     }
11355
11356   if (tree_view->priv->rubber_band_status)
11357     gtk_tree_view_stop_rubber_band (tree_view);
11358
11359   if (tree_view->priv->model)
11360     {
11361       GList *tmplist = tree_view->priv->columns;
11362       GtkStyleContext *context;
11363
11364       gtk_tree_view_unref_and_check_selection_tree (tree_view, tree_view->priv->tree);
11365       gtk_tree_view_stop_editing (tree_view, TRUE);
11366
11367       context = gtk_widget_get_style_context (GTK_WIDGET (tree_view));
11368       gtk_style_context_cancel_animations (context, NULL);
11369
11370       g_signal_handlers_disconnect_by_func (tree_view->priv->model,
11371                                             gtk_tree_view_row_changed,
11372                                             tree_view);
11373       g_signal_handlers_disconnect_by_func (tree_view->priv->model,
11374                                             gtk_tree_view_row_inserted,
11375                                             tree_view);
11376       g_signal_handlers_disconnect_by_func (tree_view->priv->model,
11377                                             gtk_tree_view_row_has_child_toggled,
11378                                             tree_view);
11379       g_signal_handlers_disconnect_by_func (tree_view->priv->model,
11380                                             gtk_tree_view_row_deleted,
11381                                             tree_view);
11382       g_signal_handlers_disconnect_by_func (tree_view->priv->model,
11383                                             gtk_tree_view_rows_reordered,
11384                                             tree_view);
11385
11386       for (; tmplist; tmplist = tmplist->next)
11387         _gtk_tree_view_column_unset_model (tmplist->data,
11388                                            tree_view->priv->model);
11389
11390       if (tree_view->priv->tree)
11391         gtk_tree_view_free_rbtree (tree_view);
11392
11393       gtk_tree_row_reference_free (tree_view->priv->drag_dest_row);
11394       tree_view->priv->drag_dest_row = NULL;
11395       tree_view->priv->cursor_tree = NULL;
11396       tree_view->priv->cursor_node = NULL;
11397       gtk_tree_row_reference_free (tree_view->priv->anchor);
11398       tree_view->priv->anchor = NULL;
11399       gtk_tree_row_reference_free (tree_view->priv->top_row);
11400       tree_view->priv->top_row = NULL;
11401       gtk_tree_row_reference_free (tree_view->priv->scroll_to_path);
11402       tree_view->priv->scroll_to_path = NULL;
11403
11404       tree_view->priv->scroll_to_column = NULL;
11405
11406       g_object_unref (tree_view->priv->model);
11407
11408       tree_view->priv->search_column = -1;
11409       tree_view->priv->fixed_height_check = 0;
11410       tree_view->priv->fixed_height = -1;
11411       tree_view->priv->dy = tree_view->priv->top_row_dy = 0;
11412       tree_view->priv->last_button_x = -1;
11413       tree_view->priv->last_button_y = -1;
11414     }
11415
11416   tree_view->priv->model = model;
11417
11418   if (tree_view->priv->model)
11419     {
11420       gint i;
11421       GtkTreePath *path;
11422       GtkTreeIter iter;
11423       GtkTreeModelFlags flags;
11424
11425       if (tree_view->priv->search_column == -1)
11426         {
11427           for (i = 0; i < gtk_tree_model_get_n_columns (model); i++)
11428             {
11429               GType type = gtk_tree_model_get_column_type (model, i);
11430
11431               if (g_value_type_transformable (type, G_TYPE_STRING))
11432                 {
11433                   tree_view->priv->search_column = i;
11434                   break;
11435                 }
11436             }
11437         }
11438
11439       g_object_ref (tree_view->priv->model);
11440       g_signal_connect (tree_view->priv->model,
11441                         "row-changed",
11442                         G_CALLBACK (gtk_tree_view_row_changed),
11443                         tree_view);
11444       g_signal_connect (tree_view->priv->model,
11445                         "row-inserted",
11446                         G_CALLBACK (gtk_tree_view_row_inserted),
11447                         tree_view);
11448       g_signal_connect (tree_view->priv->model,
11449                         "row-has-child-toggled",
11450                         G_CALLBACK (gtk_tree_view_row_has_child_toggled),
11451                         tree_view);
11452       g_signal_connect (tree_view->priv->model,
11453                         "row-deleted",
11454                         G_CALLBACK (gtk_tree_view_row_deleted),
11455                         tree_view);
11456       g_signal_connect (tree_view->priv->model,
11457                         "rows-reordered",
11458                         G_CALLBACK (gtk_tree_view_rows_reordered),
11459                         tree_view);
11460
11461       flags = gtk_tree_model_get_flags (tree_view->priv->model);
11462       if ((flags & GTK_TREE_MODEL_LIST_ONLY) == GTK_TREE_MODEL_LIST_ONLY)
11463         tree_view->priv->is_list = TRUE;
11464       else
11465         tree_view->priv->is_list = FALSE;
11466
11467       path = gtk_tree_path_new_first ();
11468       if (gtk_tree_model_get_iter (tree_view->priv->model, &iter, path))
11469         {
11470           tree_view->priv->tree = _gtk_rbtree_new ();
11471           gtk_tree_view_build_tree (tree_view, tree_view->priv->tree, &iter, 1, FALSE);
11472         }
11473       gtk_tree_path_free (path);
11474
11475       /*  FIXME: do I need to do this? gtk_tree_view_create_buttons (tree_view); */
11476       install_presize_handler (tree_view);
11477     }
11478
11479   g_object_notify (G_OBJECT (tree_view), "model");
11480
11481   if (tree_view->priv->selection)
11482   _gtk_tree_selection_emit_changed (tree_view->priv->selection);
11483
11484   if (gtk_widget_get_realized (GTK_WIDGET (tree_view)))
11485     gtk_widget_queue_resize (GTK_WIDGET (tree_view));
11486 }
11487
11488 /**
11489  * gtk_tree_view_get_selection:
11490  * @tree_view: A #GtkTreeView.
11491  *
11492  * Gets the #GtkTreeSelection associated with @tree_view.
11493  *
11494  * Return value: (transfer none): A #GtkTreeSelection object.
11495  **/
11496 GtkTreeSelection *
11497 gtk_tree_view_get_selection (GtkTreeView *tree_view)
11498 {
11499   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), NULL);
11500
11501   return tree_view->priv->selection;
11502 }
11503
11504 /**
11505  * gtk_tree_view_get_hadjustment:
11506  * @tree_view: A #GtkTreeView
11507  *
11508  * Gets the #GtkAdjustment currently being used for the horizontal aspect.
11509  *
11510  * Return value: (transfer none): A #GtkAdjustment object, or %NULL
11511  *     if none is currently being used.
11512  *
11513  * Deprecated: 3.0: Use gtk_scrollable_get_hadjustment()
11514  **/
11515 GtkAdjustment *
11516 gtk_tree_view_get_hadjustment (GtkTreeView *tree_view)
11517 {
11518   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), NULL);
11519
11520   return gtk_tree_view_do_get_hadjustment (tree_view);
11521 }
11522
11523 static GtkAdjustment *
11524 gtk_tree_view_do_get_hadjustment (GtkTreeView *tree_view)
11525 {
11526   return tree_view->priv->hadjustment;
11527 }
11528
11529 /**
11530  * gtk_tree_view_set_hadjustment:
11531  * @tree_view: A #GtkTreeView
11532  * @adjustment: (allow-none): The #GtkAdjustment to set, or %NULL
11533  *
11534  * Sets the #GtkAdjustment for the current horizontal aspect.
11535  *
11536  * Deprecated: 3.0: Use gtk_scrollable_set_hadjustment()
11537  **/
11538 void
11539 gtk_tree_view_set_hadjustment (GtkTreeView   *tree_view,
11540                                GtkAdjustment *adjustment)
11541 {
11542   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
11543   g_return_if_fail (adjustment == NULL || GTK_IS_ADJUSTMENT (adjustment));
11544
11545   gtk_tree_view_do_set_hadjustment (tree_view, adjustment);
11546 }
11547
11548 static void
11549 gtk_tree_view_do_set_hadjustment (GtkTreeView   *tree_view,
11550                                   GtkAdjustment *adjustment)
11551 {
11552   GtkTreeViewPrivate *priv = tree_view->priv;
11553
11554   if (adjustment && priv->hadjustment == adjustment)
11555     return;
11556
11557   if (priv->hadjustment != NULL)
11558     {
11559       g_signal_handlers_disconnect_by_func (priv->hadjustment,
11560                                             gtk_tree_view_adjustment_changed,
11561                                             tree_view);
11562       g_object_unref (priv->hadjustment);
11563     }
11564
11565   if (adjustment == NULL)
11566     adjustment = gtk_adjustment_new (0.0, 0.0, 0.0,
11567                                      0.0, 0.0, 0.0);
11568
11569   g_signal_connect (adjustment, "value-changed",
11570                     G_CALLBACK (gtk_tree_view_adjustment_changed), tree_view);
11571   priv->hadjustment = g_object_ref_sink (adjustment);
11572   /* FIXME: Adjustment should probably be populated here with fresh values, but
11573    * internal details are too complicated for me to decipher right now.
11574    */
11575   gtk_tree_view_adjustment_changed (NULL, tree_view);
11576
11577   g_object_notify (G_OBJECT (tree_view), "hadjustment");
11578 }
11579
11580 /**
11581  * gtk_tree_view_get_vadjustment:
11582  * @tree_view: A #GtkTreeView
11583  *
11584  * Gets the #GtkAdjustment currently being used for the vertical aspect.
11585  *
11586  * Return value: (transfer none): A #GtkAdjustment object, or %NULL
11587  *     if none is currently being used.
11588  *
11589  * Deprecated: 3.0: Use gtk_scrollable_get_vadjustment()
11590  **/
11591 GtkAdjustment *
11592 gtk_tree_view_get_vadjustment (GtkTreeView *tree_view)
11593 {
11594   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), NULL);
11595
11596   return gtk_tree_view_do_get_vadjustment (tree_view);
11597 }
11598
11599 static GtkAdjustment *
11600 gtk_tree_view_do_get_vadjustment (GtkTreeView *tree_view)
11601 {
11602   return tree_view->priv->vadjustment;
11603 }
11604
11605 /**
11606  * gtk_tree_view_set_vadjustment:
11607  * @tree_view: A #GtkTreeView
11608  * @adjustment: (allow-none): The #GtkAdjustment to set, or %NULL
11609  *
11610  * Sets the #GtkAdjustment for the current vertical aspect.
11611  *
11612  * Deprecated: 3.0: Use gtk_scrollable_set_vadjustment()
11613  **/
11614 void
11615 gtk_tree_view_set_vadjustment (GtkTreeView   *tree_view,
11616                                GtkAdjustment *adjustment)
11617 {
11618   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
11619   g_return_if_fail (adjustment == NULL || GTK_IS_ADJUSTMENT (adjustment));
11620
11621   gtk_tree_view_do_set_vadjustment (tree_view, adjustment);
11622 }
11623
11624 static void
11625 gtk_tree_view_do_set_vadjustment (GtkTreeView   *tree_view,
11626                                   GtkAdjustment *adjustment)
11627 {
11628   GtkTreeViewPrivate *priv = tree_view->priv;
11629
11630   if (adjustment && priv->vadjustment == adjustment)
11631     return;
11632
11633   if (priv->vadjustment != NULL)
11634     {
11635       g_signal_handlers_disconnect_by_func (priv->vadjustment,
11636                                             gtk_tree_view_adjustment_changed,
11637                                             tree_view);
11638       g_object_unref (priv->vadjustment);
11639     }
11640
11641   if (adjustment == NULL)
11642     adjustment = gtk_adjustment_new (0.0, 0.0, 0.0,
11643                                      0.0, 0.0, 0.0);
11644
11645   g_signal_connect (adjustment, "value-changed",
11646                     G_CALLBACK (gtk_tree_view_adjustment_changed), tree_view);
11647   priv->vadjustment = g_object_ref_sink (adjustment);
11648   /* FIXME: Adjustment should probably be populated here with fresh values, but
11649    * internal details are too complicated for me to decipher right now.
11650    */
11651   gtk_tree_view_adjustment_changed (NULL, tree_view);
11652   g_object_notify (G_OBJECT (tree_view), "vadjustment");
11653 }
11654
11655 /* Column and header operations */
11656
11657 /**
11658  * gtk_tree_view_get_headers_visible:
11659  * @tree_view: A #GtkTreeView.
11660  *
11661  * Returns %TRUE if the headers on the @tree_view are visible.
11662  *
11663  * Return value: Whether the headers are visible or not.
11664  **/
11665 gboolean
11666 gtk_tree_view_get_headers_visible (GtkTreeView *tree_view)
11667 {
11668   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), FALSE);
11669
11670   return tree_view->priv->headers_visible;
11671 }
11672
11673 /**
11674  * gtk_tree_view_set_headers_visible:
11675  * @tree_view: A #GtkTreeView.
11676  * @headers_visible: %TRUE if the headers are visible
11677  *
11678  * Sets the visibility state of the headers.
11679  **/
11680 void
11681 gtk_tree_view_set_headers_visible (GtkTreeView *tree_view,
11682                                    gboolean     headers_visible)
11683 {
11684   gint x, y;
11685   GList *list;
11686   GtkTreeViewColumn *column;
11687   GtkAllocation allocation;
11688   GtkWidget *button;
11689
11690   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
11691
11692   headers_visible = !! headers_visible;
11693
11694   if (tree_view->priv->headers_visible == headers_visible)
11695     return;
11696
11697   tree_view->priv->headers_visible = headers_visible == TRUE;
11698
11699   if (gtk_widget_get_realized (GTK_WIDGET (tree_view)))
11700     {
11701       gdk_window_get_position (tree_view->priv->bin_window, &x, &y);
11702       if (headers_visible)
11703         {
11704           gtk_widget_get_allocation (GTK_WIDGET (tree_view), &allocation);
11705           gdk_window_move_resize (tree_view->priv->bin_window,
11706                                   x, y  + gtk_tree_view_get_effective_header_height (tree_view),
11707                                   tree_view->priv->width, allocation.height -  + gtk_tree_view_get_effective_header_height (tree_view));
11708
11709           if (gtk_widget_get_mapped (GTK_WIDGET (tree_view)))
11710             gtk_tree_view_map_buttons (tree_view);
11711         }
11712       else
11713         {
11714           gdk_window_move_resize (tree_view->priv->bin_window, x, y, tree_view->priv->width, tree_view->priv->height);
11715
11716           for (list = tree_view->priv->columns; list; list = list->next)
11717             {
11718               column = list->data;
11719               button = gtk_tree_view_column_get_button (column);
11720
11721               gtk_widget_hide (button);
11722               gtk_widget_unmap (button);
11723             }
11724           gdk_window_hide (tree_view->priv->header_window);
11725         }
11726     }
11727
11728   gtk_widget_get_allocation (GTK_WIDGET (tree_view), &allocation);
11729   gtk_adjustment_configure (tree_view->priv->vadjustment,
11730                             gtk_adjustment_get_value (tree_view->priv->vadjustment),
11731                             0,
11732                             tree_view->priv->height,
11733                             gtk_adjustment_get_step_increment (tree_view->priv->vadjustment),
11734                             (allocation.height - gtk_tree_view_get_effective_header_height (tree_view)) / 2,
11735                             allocation.height - gtk_tree_view_get_effective_header_height (tree_view));
11736
11737   gtk_widget_queue_resize (GTK_WIDGET (tree_view));
11738
11739   g_object_notify (G_OBJECT (tree_view), "headers-visible");
11740 }
11741
11742 /**
11743  * gtk_tree_view_columns_autosize:
11744  * @tree_view: A #GtkTreeView.
11745  *
11746  * Resizes all columns to their optimal width. Only works after the
11747  * treeview has been realized.
11748  **/
11749 void
11750 gtk_tree_view_columns_autosize (GtkTreeView *tree_view)
11751 {
11752   gboolean dirty = FALSE;
11753   GList *list;
11754   GtkTreeViewColumn *column;
11755
11756   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
11757
11758   for (list = tree_view->priv->columns; list; list = list->next)
11759     {
11760       column = list->data;
11761       if (gtk_tree_view_column_get_sizing (column) == GTK_TREE_VIEW_COLUMN_AUTOSIZE)
11762         continue;
11763       _gtk_tree_view_column_cell_set_dirty (column, TRUE);
11764       dirty = TRUE;
11765     }
11766
11767   if (dirty)
11768     gtk_widget_queue_resize (GTK_WIDGET (tree_view));
11769 }
11770
11771 /**
11772  * gtk_tree_view_set_headers_clickable:
11773  * @tree_view: A #GtkTreeView.
11774  * @setting: %TRUE if the columns are clickable.
11775  *
11776  * Allow the column title buttons to be clicked.
11777  **/
11778 void
11779 gtk_tree_view_set_headers_clickable (GtkTreeView *tree_view,
11780                                      gboolean   setting)
11781 {
11782   GList *list;
11783
11784   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
11785
11786   for (list = tree_view->priv->columns; list; list = list->next)
11787     gtk_tree_view_column_set_clickable (GTK_TREE_VIEW_COLUMN (list->data), setting);
11788
11789   g_object_notify (G_OBJECT (tree_view), "headers-clickable");
11790 }
11791
11792
11793 /**
11794  * gtk_tree_view_get_headers_clickable:
11795  * @tree_view: A #GtkTreeView.
11796  *
11797  * Returns whether all header columns are clickable.
11798  *
11799  * Return value: %TRUE if all header columns are clickable, otherwise %FALSE
11800  *
11801  * Since: 2.10
11802  **/
11803 gboolean
11804 gtk_tree_view_get_headers_clickable (GtkTreeView *tree_view)
11805 {
11806   GList *list;
11807
11808   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), FALSE);
11809
11810   for (list = tree_view->priv->columns; list; list = list->next)
11811     if (!gtk_tree_view_column_get_clickable (GTK_TREE_VIEW_COLUMN (list->data)))
11812       return FALSE;
11813
11814   return TRUE;
11815 }
11816
11817 /**
11818  * gtk_tree_view_set_rules_hint
11819  * @tree_view: a #GtkTreeView
11820  * @setting: %TRUE if the tree requires reading across rows
11821  *
11822  * This function tells GTK+ that the user interface for your
11823  * application requires users to read across tree rows and associate
11824  * cells with one another. By default, GTK+ will then render the tree
11825  * with alternating row colors. Do <emphasis>not</emphasis> use it
11826  * just because you prefer the appearance of the ruled tree; that's a
11827  * question for the theme. Some themes will draw tree rows in
11828  * alternating colors even when rules are turned off, and users who
11829  * prefer that appearance all the time can choose those themes. You
11830  * should call this function only as a <emphasis>semantic</emphasis>
11831  * hint to the theme engine that your tree makes alternating colors
11832  * useful from a functional standpoint (since it has lots of columns,
11833  * generally).
11834  *
11835  **/
11836 void
11837 gtk_tree_view_set_rules_hint (GtkTreeView  *tree_view,
11838                               gboolean      setting)
11839 {
11840   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
11841
11842   setting = setting != FALSE;
11843
11844   if (tree_view->priv->has_rules != setting)
11845     {
11846       tree_view->priv->has_rules = setting;
11847       gtk_widget_queue_draw (GTK_WIDGET (tree_view));
11848     }
11849
11850   g_object_notify (G_OBJECT (tree_view), "rules-hint");
11851 }
11852
11853 /**
11854  * gtk_tree_view_get_rules_hint
11855  * @tree_view: a #GtkTreeView
11856  *
11857  * Gets the setting set by gtk_tree_view_set_rules_hint().
11858  *
11859  * Return value: %TRUE if rules are useful for the user of this tree
11860  **/
11861 gboolean
11862 gtk_tree_view_get_rules_hint (GtkTreeView  *tree_view)
11863 {
11864   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), FALSE);
11865
11866   return tree_view->priv->has_rules;
11867 }
11868
11869 /* Public Column functions
11870  */
11871
11872 /**
11873  * gtk_tree_view_append_column:
11874  * @tree_view: A #GtkTreeView.
11875  * @column: The #GtkTreeViewColumn to add.
11876  *
11877  * Appends @column to the list of columns. If @tree_view has "fixed_height"
11878  * mode enabled, then @column must have its "sizing" property set to be
11879  * GTK_TREE_VIEW_COLUMN_FIXED.
11880  *
11881  * Return value: The number of columns in @tree_view after appending.
11882  **/
11883 gint
11884 gtk_tree_view_append_column (GtkTreeView       *tree_view,
11885                              GtkTreeViewColumn *column)
11886 {
11887   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), -1);
11888   g_return_val_if_fail (GTK_IS_TREE_VIEW_COLUMN (column), -1);
11889   g_return_val_if_fail (gtk_tree_view_column_get_tree_view (column) == NULL, -1);
11890
11891   return gtk_tree_view_insert_column (tree_view, column, -1);
11892 }
11893
11894 void
11895 _gtk_tree_view_reset_header_styles (GtkTreeView *tree_view)
11896 {
11897   GList *columns;
11898
11899   for (columns = tree_view->priv->columns; columns; columns = columns->next)
11900     {
11901       GtkTreeViewColumn *column = columns->data;
11902       GtkWidget *header_widget;
11903
11904       if (gtk_tree_view_column_get_visible (column))
11905         continue;
11906
11907       header_widget = gtk_tree_view_column_get_widget (column);
11908
11909       if (!header_widget)
11910         header_widget = gtk_tree_view_column_get_button (column);
11911
11912       gtk_widget_reset_style (header_widget);
11913     }
11914 }
11915
11916
11917 /**
11918  * gtk_tree_view_remove_column:
11919  * @tree_view: A #GtkTreeView.
11920  * @column: The #GtkTreeViewColumn to remove.
11921  *
11922  * Removes @column from @tree_view.
11923  *
11924  * Return value: The number of columns in @tree_view after removing.
11925  **/
11926 gint
11927 gtk_tree_view_remove_column (GtkTreeView       *tree_view,
11928                              GtkTreeViewColumn *column)
11929 {
11930   guint position;
11931
11932   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), -1);
11933   g_return_val_if_fail (GTK_IS_TREE_VIEW_COLUMN (column), -1);
11934   g_return_val_if_fail (gtk_tree_view_column_get_tree_view (column) == GTK_WIDGET (tree_view), -1);
11935
11936   if (tree_view->priv->focus_column == column)
11937     tree_view->priv->focus_column = NULL;
11938
11939   if (tree_view->priv->edited_column == column)
11940     {
11941       gtk_tree_view_stop_editing (tree_view, TRUE);
11942
11943       /* no need to, but just to be sure ... */
11944       tree_view->priv->edited_column = NULL;
11945     }
11946
11947   if (tree_view->priv->expander_column == column)
11948     tree_view->priv->expander_column = NULL;
11949
11950   g_signal_handlers_disconnect_by_func (column,
11951                                         G_CALLBACK (column_sizing_notify),
11952                                         tree_view);
11953
11954   _gtk_tree_view_column_unset_tree_view (column);
11955
11956   position = g_list_index (tree_view->priv->columns, column);
11957
11958   tree_view->priv->columns = g_list_remove (tree_view->priv->columns, column);
11959   tree_view->priv->n_columns--;
11960
11961   if (gtk_widget_get_realized (GTK_WIDGET (tree_view)))
11962     {
11963       GList *list;
11964
11965       _gtk_tree_view_column_unrealize_button (column);
11966       for (list = tree_view->priv->columns; list; list = list->next)
11967         {
11968           GtkTreeViewColumn *tmp_column;
11969
11970           tmp_column = GTK_TREE_VIEW_COLUMN (list->data);
11971           if (gtk_tree_view_column_get_visible (tmp_column))
11972             _gtk_tree_view_column_cell_set_dirty (tmp_column, TRUE);
11973         }
11974
11975       if (tree_view->priv->n_columns == 0 &&
11976           gtk_tree_view_get_headers_visible (tree_view))
11977         gdk_window_hide (tree_view->priv->header_window);
11978
11979       gtk_widget_queue_resize (GTK_WIDGET (tree_view));
11980     }
11981
11982   _gtk_tree_view_reset_header_styles (tree_view);
11983
11984   _gtk_tree_view_accessible_remove_column (tree_view, column, position);
11985
11986   g_object_unref (column);
11987   g_signal_emit (tree_view, tree_view_signals[COLUMNS_CHANGED], 0);
11988
11989   return tree_view->priv->n_columns;
11990 }
11991
11992 /**
11993  * gtk_tree_view_insert_column:
11994  * @tree_view: A #GtkTreeView.
11995  * @column: The #GtkTreeViewColumn to be inserted.
11996  * @position: The position to insert @column in.
11997  *
11998  * This inserts the @column into the @tree_view at @position.  If @position is
11999  * -1, then the column is inserted at the end. If @tree_view has
12000  * "fixed_height" mode enabled, then @column must have its "sizing" property
12001  * set to be GTK_TREE_VIEW_COLUMN_FIXED.
12002  *
12003  * Return value: The number of columns in @tree_view after insertion.
12004  **/
12005 gint
12006 gtk_tree_view_insert_column (GtkTreeView       *tree_view,
12007                              GtkTreeViewColumn *column,
12008                              gint               position)
12009 {
12010   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), -1);
12011   g_return_val_if_fail (GTK_IS_TREE_VIEW_COLUMN (column), -1);
12012   g_return_val_if_fail (gtk_tree_view_column_get_tree_view (column) == NULL, -1);
12013
12014   if (tree_view->priv->fixed_height_mode)
12015     g_return_val_if_fail (gtk_tree_view_column_get_sizing (column)
12016                           == GTK_TREE_VIEW_COLUMN_FIXED, -1);
12017
12018   if (position < 0 || position > tree_view->priv->n_columns)
12019     position = tree_view->priv->n_columns;
12020
12021   g_object_ref_sink (column);
12022
12023   if (tree_view->priv->n_columns == 0 &&
12024       gtk_widget_get_realized (GTK_WIDGET (tree_view)) &&
12025       gtk_tree_view_get_headers_visible (tree_view))
12026     {
12027       gdk_window_show (tree_view->priv->header_window);
12028     }
12029
12030   g_signal_connect (column, "notify::sizing",
12031                     G_CALLBACK (column_sizing_notify), tree_view);
12032
12033   tree_view->priv->columns = g_list_insert (tree_view->priv->columns,
12034                                             column, position);
12035   tree_view->priv->n_columns++;
12036
12037   _gtk_tree_view_column_set_tree_view (column, tree_view);
12038
12039   if (gtk_widget_get_realized (GTK_WIDGET (tree_view)))
12040     {
12041       GList *list;
12042
12043       _gtk_tree_view_column_realize_button (column);
12044
12045       for (list = tree_view->priv->columns; list; list = list->next)
12046         {
12047           column = GTK_TREE_VIEW_COLUMN (list->data);
12048           if (gtk_tree_view_column_get_visible (column))
12049             _gtk_tree_view_column_cell_set_dirty (column, TRUE);
12050         }
12051       gtk_widget_queue_resize (GTK_WIDGET (tree_view));
12052     }
12053
12054   _gtk_tree_view_reset_header_styles (tree_view);
12055
12056   _gtk_tree_view_accessible_add_column (tree_view, column, position);
12057
12058   g_signal_emit (tree_view, tree_view_signals[COLUMNS_CHANGED], 0);
12059
12060   return tree_view->priv->n_columns;
12061 }
12062
12063 /**
12064  * gtk_tree_view_insert_column_with_attributes:
12065  * @tree_view: A #GtkTreeView
12066  * @position: The position to insert the new column in
12067  * @title: The title to set the header to
12068  * @cell: The #GtkCellRenderer
12069  * @...: A %NULL-terminated list of attributes
12070  *
12071  * Creates a new #GtkTreeViewColumn and inserts it into the @tree_view at
12072  * @position.  If @position is -1, then the newly created column is inserted at
12073  * the end.  The column is initialized with the attributes given. If @tree_view
12074  * has "fixed_height" mode enabled, then the new column will have its sizing
12075  * property set to be GTK_TREE_VIEW_COLUMN_FIXED.
12076  *
12077  * Return value: The number of columns in @tree_view after insertion.
12078  **/
12079 gint
12080 gtk_tree_view_insert_column_with_attributes (GtkTreeView     *tree_view,
12081                                              gint             position,
12082                                              const gchar     *title,
12083                                              GtkCellRenderer *cell,
12084                                              ...)
12085 {
12086   GtkTreeViewColumn *column;
12087   gchar *attribute;
12088   va_list args;
12089   gint column_id;
12090
12091   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), -1);
12092
12093   column = gtk_tree_view_column_new ();
12094   if (tree_view->priv->fixed_height_mode)
12095     gtk_tree_view_column_set_sizing (column, GTK_TREE_VIEW_COLUMN_FIXED);
12096
12097   gtk_tree_view_column_set_title (column, title);
12098   gtk_tree_view_column_pack_start (column, cell, TRUE);
12099
12100   va_start (args, cell);
12101
12102   attribute = va_arg (args, gchar *);
12103
12104   while (attribute != NULL)
12105     {
12106       column_id = va_arg (args, gint);
12107       gtk_tree_view_column_add_attribute (column, cell, attribute, column_id);
12108       attribute = va_arg (args, gchar *);
12109     }
12110
12111   va_end (args);
12112
12113   return gtk_tree_view_insert_column (tree_view, column, position);
12114 }
12115
12116 /**
12117  * gtk_tree_view_insert_column_with_data_func:
12118  * @tree_view: a #GtkTreeView
12119  * @position: Position to insert, -1 for append
12120  * @title: column title
12121  * @cell: cell renderer for column
12122  * @func: function to set attributes of cell renderer
12123  * @data: data for @func
12124  * @dnotify: destroy notifier for @data
12125  *
12126  * Convenience function that inserts a new column into the #GtkTreeView
12127  * with the given cell renderer and a #GtkCellDataFunc to set cell renderer
12128  * attributes (normally using data from the model). See also
12129  * gtk_tree_view_column_set_cell_data_func(), gtk_tree_view_column_pack_start().
12130  * If @tree_view has "fixed_height" mode enabled, then the new column will have its
12131  * "sizing" property set to be GTK_TREE_VIEW_COLUMN_FIXED.
12132  *
12133  * Return value: number of columns in the tree view post-insert
12134  **/
12135 gint
12136 gtk_tree_view_insert_column_with_data_func  (GtkTreeView               *tree_view,
12137                                              gint                       position,
12138                                              const gchar               *title,
12139                                              GtkCellRenderer           *cell,
12140                                              GtkTreeCellDataFunc        func,
12141                                              gpointer                   data,
12142                                              GDestroyNotify             dnotify)
12143 {
12144   GtkTreeViewColumn *column;
12145
12146   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), -1);
12147
12148   column = gtk_tree_view_column_new ();
12149   if (tree_view->priv->fixed_height_mode)
12150     gtk_tree_view_column_set_sizing (column, GTK_TREE_VIEW_COLUMN_FIXED);
12151
12152   gtk_tree_view_column_set_title (column, title);
12153   gtk_tree_view_column_pack_start (column, cell, TRUE);
12154   gtk_tree_view_column_set_cell_data_func (column, cell, func, data, dnotify);
12155
12156   return gtk_tree_view_insert_column (tree_view, column, position);
12157 }
12158
12159 /**
12160  * gtk_tree_view_get_n_columns:
12161  * @tree_view: a #GtkTreeView
12162  *
12163  * Queries the number of columns in the given @tree_view.
12164  *
12165  * Returns: The number of columns in the @tree_view
12166  *
12167  * Since: 3.4
12168  **/
12169 guint
12170 gtk_tree_view_get_n_columns (GtkTreeView *tree_view)
12171 {
12172   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), 0);
12173
12174   return tree_view->priv->n_columns;
12175 }
12176
12177 /**
12178  * gtk_tree_view_get_column:
12179  * @tree_view: A #GtkTreeView.
12180  * @n: The position of the column, counting from 0.
12181  *
12182  * Gets the #GtkTreeViewColumn at the given position in the #tree_view.
12183  *
12184  * Return value: (transfer none): The #GtkTreeViewColumn, or %NULL if the
12185  *     position is outside the range of columns.
12186  **/
12187 GtkTreeViewColumn *
12188 gtk_tree_view_get_column (GtkTreeView *tree_view,
12189                           gint         n)
12190 {
12191   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), NULL);
12192
12193   if (n < 0 || n >= tree_view->priv->n_columns)
12194     return NULL;
12195
12196   if (tree_view->priv->columns == NULL)
12197     return NULL;
12198
12199   return GTK_TREE_VIEW_COLUMN (g_list_nth (tree_view->priv->columns, n)->data);
12200 }
12201
12202 /**
12203  * gtk_tree_view_get_columns:
12204  * @tree_view: A #GtkTreeView
12205  *
12206  * Returns a #GList of all the #GtkTreeViewColumn s currently in @tree_view.
12207  * The returned list must be freed with g_list_free ().
12208  *
12209  * Return value: (element-type GtkTreeViewColumn) (transfer container): A list of #GtkTreeViewColumn s
12210  **/
12211 GList *
12212 gtk_tree_view_get_columns (GtkTreeView *tree_view)
12213 {
12214   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), NULL);
12215
12216   return g_list_copy (tree_view->priv->columns);
12217 }
12218
12219 /**
12220  * gtk_tree_view_move_column_after:
12221  * @tree_view: A #GtkTreeView
12222  * @column: The #GtkTreeViewColumn to be moved.
12223  * @base_column: (allow-none): The #GtkTreeViewColumn to be moved relative to, or %NULL.
12224  *
12225  * Moves @column to be after to @base_column.  If @base_column is %NULL, then
12226  * @column is placed in the first position.
12227  **/
12228 void
12229 gtk_tree_view_move_column_after (GtkTreeView       *tree_view,
12230                                  GtkTreeViewColumn *column,
12231                                  GtkTreeViewColumn *base_column)
12232 {
12233   GList *column_list_el, *base_el = NULL;
12234
12235   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
12236
12237   column_list_el = g_list_find (tree_view->priv->columns, column);
12238   g_return_if_fail (column_list_el != NULL);
12239
12240   if (base_column)
12241     {
12242       base_el = g_list_find (tree_view->priv->columns, base_column);
12243       g_return_if_fail (base_el != NULL);
12244     }
12245
12246   if (column_list_el->prev == base_el)
12247     return;
12248
12249   tree_view->priv->columns = g_list_remove_link (tree_view->priv->columns, column_list_el);
12250   if (base_el == NULL)
12251     {
12252       column_list_el->prev = NULL;
12253       column_list_el->next = tree_view->priv->columns;
12254       if (column_list_el->next)
12255         column_list_el->next->prev = column_list_el;
12256       tree_view->priv->columns = column_list_el;
12257     }
12258   else
12259     {
12260       column_list_el->prev = base_el;
12261       column_list_el->next = base_el->next;
12262       if (column_list_el->next)
12263         column_list_el->next->prev = column_list_el;
12264       base_el->next = column_list_el;
12265     }
12266
12267   if (gtk_widget_get_realized (GTK_WIDGET (tree_view)))
12268     {
12269       gtk_widget_queue_resize (GTK_WIDGET (tree_view));
12270       gtk_tree_view_size_allocate_columns (GTK_WIDGET (tree_view), NULL);
12271     }
12272
12273   _gtk_tree_view_reset_header_styles (tree_view);
12274
12275   _gtk_tree_view_accessible_reorder_column (tree_view, column);
12276
12277   g_signal_emit (tree_view, tree_view_signals[COLUMNS_CHANGED], 0);
12278 }
12279
12280 /**
12281  * gtk_tree_view_set_expander_column:
12282  * @tree_view: A #GtkTreeView
12283  * @column: %NULL, or the column to draw the expander arrow at.
12284  *
12285  * Sets the column to draw the expander arrow at. It must be in @tree_view.
12286  * If @column is %NULL, then the expander arrow is always at the first
12287  * visible column.
12288  *
12289  * If you do not want expander arrow to appear in your tree, set the
12290  * expander column to a hidden column.
12291  **/
12292 void
12293 gtk_tree_view_set_expander_column (GtkTreeView       *tree_view,
12294                                    GtkTreeViewColumn *column)
12295 {
12296   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
12297   g_return_if_fail (column == NULL || GTK_IS_TREE_VIEW_COLUMN (column));
12298   g_return_if_fail (column == NULL || gtk_tree_view_column_get_tree_view (column) == GTK_WIDGET (tree_view));
12299
12300   if (tree_view->priv->expander_column != column)
12301     {
12302       tree_view->priv->expander_column = column;
12303       g_object_notify (G_OBJECT (tree_view), "expander-column");
12304     }
12305 }
12306
12307 /**
12308  * gtk_tree_view_get_expander_column:
12309  * @tree_view: A #GtkTreeView
12310  *
12311  * Returns the column that is the current expander column.
12312  * This column has the expander arrow drawn next to it.
12313  *
12314  * Return value: (transfer none): The expander column.
12315  **/
12316 GtkTreeViewColumn *
12317 gtk_tree_view_get_expander_column (GtkTreeView *tree_view)
12318 {
12319   GList *list;
12320
12321   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), NULL);
12322
12323   for (list = tree_view->priv->columns; list; list = list->next)
12324     if (gtk_tree_view_is_expander_column (tree_view, GTK_TREE_VIEW_COLUMN (list->data)))
12325       return (GtkTreeViewColumn *) list->data;
12326   return NULL;
12327 }
12328
12329
12330 /**
12331  * gtk_tree_view_set_column_drag_function:
12332  * @tree_view: A #GtkTreeView.
12333  * @func: (allow-none): A function to determine which columns are reorderable, or %NULL.
12334  * @user_data: (allow-none): User data to be passed to @func, or %NULL
12335  * @destroy: (allow-none): Destroy notifier for @user_data, or %NULL
12336  *
12337  * Sets a user function for determining where a column may be dropped when
12338  * dragged.  This function is called on every column pair in turn at the
12339  * beginning of a column drag to determine where a drop can take place.  The
12340  * arguments passed to @func are: the @tree_view, the #GtkTreeViewColumn being
12341  * dragged, the two #GtkTreeViewColumn s determining the drop spot, and
12342  * @user_data.  If either of the #GtkTreeViewColumn arguments for the drop spot
12343  * are %NULL, then they indicate an edge.  If @func is set to be %NULL, then
12344  * @tree_view reverts to the default behavior of allowing all columns to be
12345  * dropped everywhere.
12346  **/
12347 void
12348 gtk_tree_view_set_column_drag_function (GtkTreeView               *tree_view,
12349                                         GtkTreeViewColumnDropFunc  func,
12350                                         gpointer                   user_data,
12351                                         GDestroyNotify             destroy)
12352 {
12353   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
12354
12355   if (tree_view->priv->column_drop_func_data_destroy)
12356     tree_view->priv->column_drop_func_data_destroy (tree_view->priv->column_drop_func_data);
12357
12358   tree_view->priv->column_drop_func = func;
12359   tree_view->priv->column_drop_func_data = user_data;
12360   tree_view->priv->column_drop_func_data_destroy = destroy;
12361 }
12362
12363 /**
12364  * gtk_tree_view_scroll_to_point:
12365  * @tree_view: a #GtkTreeView
12366  * @tree_x: X coordinate of new top-left pixel of visible area, or -1
12367  * @tree_y: Y coordinate of new top-left pixel of visible area, or -1
12368  *
12369  * Scrolls the tree view such that the top-left corner of the visible
12370  * area is @tree_x, @tree_y, where @tree_x and @tree_y are specified
12371  * in tree coordinates.  The @tree_view must be realized before
12372  * this function is called.  If it isn't, you probably want to be
12373  * using gtk_tree_view_scroll_to_cell().
12374  *
12375  * If either @tree_x or @tree_y are -1, then that direction isn't scrolled.
12376  **/
12377 void
12378 gtk_tree_view_scroll_to_point (GtkTreeView *tree_view,
12379                                gint         tree_x,
12380                                gint         tree_y)
12381 {
12382   GtkAdjustment *hadj;
12383   GtkAdjustment *vadj;
12384
12385   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
12386   g_return_if_fail (gtk_widget_get_realized (GTK_WIDGET (tree_view)));
12387
12388   hadj = tree_view->priv->hadjustment;
12389   vadj = tree_view->priv->vadjustment;
12390
12391   if (tree_x != -1)
12392     gtk_adjustment_set_value (hadj, tree_x);
12393   if (tree_y != -1)
12394     gtk_adjustment_set_value (vadj, tree_y);
12395 }
12396
12397 /**
12398  * gtk_tree_view_scroll_to_cell:
12399  * @tree_view: A #GtkTreeView.
12400  * @path: (allow-none): The path of the row to move to, or %NULL.
12401  * @column: (allow-none): The #GtkTreeViewColumn to move horizontally to, or %NULL.
12402  * @use_align: whether to use alignment arguments, or %FALSE.
12403  * @row_align: The vertical alignment of the row specified by @path.
12404  * @col_align: The horizontal alignment of the column specified by @column.
12405  *
12406  * Moves the alignments of @tree_view to the position specified by @column and
12407  * @path.  If @column is %NULL, then no horizontal scrolling occurs.  Likewise,
12408  * if @path is %NULL no vertical scrolling occurs.  At a minimum, one of @column
12409  * or @path need to be non-%NULL.  @row_align determines where the row is
12410  * placed, and @col_align determines where @column is placed.  Both are expected
12411  * to be between 0.0 and 1.0. 0.0 means left/top alignment, 1.0 means
12412  * right/bottom alignment, 0.5 means center.
12413  *
12414  * If @use_align is %FALSE, then the alignment arguments are ignored, and the
12415  * tree does the minimum amount of work to scroll the cell onto the screen.
12416  * This means that the cell will be scrolled to the edge closest to its current
12417  * position.  If the cell is currently visible on the screen, nothing is done.
12418  *
12419  * This function only works if the model is set, and @path is a valid row on the
12420  * model.  If the model changes before the @tree_view is realized, the centered
12421  * path will be modified to reflect this change.
12422  **/
12423 void
12424 gtk_tree_view_scroll_to_cell (GtkTreeView       *tree_view,
12425                               GtkTreePath       *path,
12426                               GtkTreeViewColumn *column,
12427                               gboolean           use_align,
12428                               gfloat             row_align,
12429                               gfloat             col_align)
12430 {
12431   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
12432   g_return_if_fail (tree_view->priv->model != NULL);
12433   g_return_if_fail (tree_view->priv->tree != NULL);
12434   g_return_if_fail (row_align >= 0.0 && row_align <= 1.0);
12435   g_return_if_fail (col_align >= 0.0 && col_align <= 1.0);
12436   g_return_if_fail (path != NULL || column != NULL);
12437
12438 #if 0
12439   g_print ("gtk_tree_view_scroll_to_cell:\npath: %s\ncolumn: %s\nuse_align: %d\nrow_align: %f\ncol_align: %f\n",
12440            gtk_tree_path_to_string (path), column?"non-null":"null", use_align, row_align, col_align);
12441 #endif
12442   row_align = CLAMP (row_align, 0.0, 1.0);
12443   col_align = CLAMP (col_align, 0.0, 1.0);
12444
12445
12446   /* Note: Despite the benefits that come from having one code path for the
12447    * scrolling code, we short-circuit validate_visible_area's immplementation as
12448    * it is much slower than just going to the point.
12449    */
12450   if (!gtk_widget_get_visible (GTK_WIDGET (tree_view)) ||
12451       !gtk_widget_get_realized (GTK_WIDGET (tree_view)) ||
12452       _gtk_widget_get_alloc_needed (GTK_WIDGET (tree_view)) ||
12453       GTK_RBNODE_FLAG_SET (tree_view->priv->tree->root, GTK_RBNODE_DESCENDANTS_INVALID))
12454     {
12455       if (tree_view->priv->scroll_to_path)
12456         gtk_tree_row_reference_free (tree_view->priv->scroll_to_path);
12457
12458       tree_view->priv->scroll_to_path = NULL;
12459       tree_view->priv->scroll_to_column = NULL;
12460
12461       if (path)
12462         tree_view->priv->scroll_to_path = gtk_tree_row_reference_new_proxy (G_OBJECT (tree_view), tree_view->priv->model, path);
12463       if (column)
12464         tree_view->priv->scroll_to_column = column;
12465       tree_view->priv->scroll_to_use_align = use_align;
12466       tree_view->priv->scroll_to_row_align = row_align;
12467       tree_view->priv->scroll_to_col_align = col_align;
12468
12469       install_presize_handler (tree_view);
12470     }
12471   else
12472     {
12473       GdkRectangle cell_rect;
12474       GdkRectangle vis_rect;
12475       gint dest_x, dest_y;
12476
12477       gtk_tree_view_get_background_area (tree_view, path, column, &cell_rect);
12478       gtk_tree_view_get_visible_rect (tree_view, &vis_rect);
12479
12480       cell_rect.y = TREE_WINDOW_Y_TO_RBTREE_Y (tree_view, cell_rect.y);
12481
12482       dest_x = vis_rect.x;
12483       dest_y = vis_rect.y;
12484
12485       if (column)
12486         {
12487           if (use_align)
12488             {
12489               dest_x = cell_rect.x - ((vis_rect.width - cell_rect.width) * col_align);
12490             }
12491           else
12492             {
12493               if (cell_rect.x < vis_rect.x)
12494                 dest_x = cell_rect.x;
12495               if (cell_rect.x + cell_rect.width > vis_rect.x + vis_rect.width)
12496                 dest_x = cell_rect.x + cell_rect.width - vis_rect.width;
12497             }
12498         }
12499
12500       if (path)
12501         {
12502           if (use_align)
12503             {
12504               dest_y = cell_rect.y - ((vis_rect.height - cell_rect.height) * row_align);
12505               dest_y = MAX (dest_y, 0);
12506             }
12507           else
12508             {
12509               if (cell_rect.y < vis_rect.y)
12510                 dest_y = cell_rect.y;
12511               if (cell_rect.y + cell_rect.height > vis_rect.y + vis_rect.height)
12512                 dest_y = cell_rect.y + cell_rect.height - vis_rect.height;
12513             }
12514         }
12515
12516       gtk_tree_view_scroll_to_point (tree_view, dest_x, dest_y);
12517     }
12518 }
12519
12520 /**
12521  * gtk_tree_view_row_activated:
12522  * @tree_view: A #GtkTreeView
12523  * @path: The #GtkTreePath to be activated.
12524  * @column: The #GtkTreeViewColumn to be activated.
12525  *
12526  * Activates the cell determined by @path and @column.
12527  **/
12528 void
12529 gtk_tree_view_row_activated (GtkTreeView       *tree_view,
12530                              GtkTreePath       *path,
12531                              GtkTreeViewColumn *column)
12532 {
12533   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
12534
12535   g_signal_emit (tree_view, tree_view_signals[ROW_ACTIVATED], 0, path, column);
12536 }
12537
12538
12539 static void
12540 gtk_tree_view_expand_all_emission_helper (GtkRBTree *tree,
12541                                           GtkRBNode *node,
12542                                           gpointer   data)
12543 {
12544   GtkTreeView *tree_view = data;
12545
12546   if ((node->flags & GTK_RBNODE_IS_PARENT) == GTK_RBNODE_IS_PARENT &&
12547       node->children)
12548     {
12549       GtkTreePath *path;
12550       GtkTreeIter iter;
12551
12552       path = _gtk_tree_path_new_from_rbtree (tree, node);
12553       gtk_tree_model_get_iter (tree_view->priv->model, &iter, path);
12554
12555       g_signal_emit (tree_view, tree_view_signals[ROW_EXPANDED], 0, &iter, path);
12556
12557       gtk_tree_path_free (path);
12558     }
12559
12560   if (node->children)
12561     _gtk_rbtree_traverse (node->children,
12562                           node->children->root,
12563                           G_PRE_ORDER,
12564                           gtk_tree_view_expand_all_emission_helper,
12565                           tree_view);
12566 }
12567
12568 /**
12569  * gtk_tree_view_expand_all:
12570  * @tree_view: A #GtkTreeView.
12571  *
12572  * Recursively expands all nodes in the @tree_view.
12573  **/
12574 void
12575 gtk_tree_view_expand_all (GtkTreeView *tree_view)
12576 {
12577   GtkTreePath *path;
12578   GtkRBTree *tree;
12579   GtkRBNode *node;
12580
12581   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
12582
12583   if (tree_view->priv->tree == NULL)
12584     return;
12585
12586   path = gtk_tree_path_new_first ();
12587   _gtk_tree_view_find_node (tree_view, path, &tree, &node);
12588
12589   while (node)
12590     {
12591       gtk_tree_view_real_expand_row (tree_view, path, tree, node, TRUE, FALSE);
12592       node = _gtk_rbtree_next (tree, node);
12593       gtk_tree_path_next (path);
12594   }
12595
12596   gtk_tree_path_free (path);
12597 }
12598
12599 /**
12600  * gtk_tree_view_collapse_all:
12601  * @tree_view: A #GtkTreeView.
12602  *
12603  * Recursively collapses all visible, expanded nodes in @tree_view.
12604  **/
12605 void
12606 gtk_tree_view_collapse_all (GtkTreeView *tree_view)
12607 {
12608   GtkRBTree *tree;
12609   GtkRBNode *node;
12610   GtkTreePath *path;
12611   gint *indices;
12612
12613   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
12614
12615   if (tree_view->priv->tree == NULL)
12616     return;
12617
12618   path = gtk_tree_path_new ();
12619   gtk_tree_path_down (path);
12620   indices = gtk_tree_path_get_indices (path);
12621
12622   tree = tree_view->priv->tree;
12623   node = _gtk_rbtree_first (tree);
12624
12625   while (node)
12626     {
12627       if (node->children)
12628         gtk_tree_view_real_collapse_row (tree_view, path, tree, node, FALSE);
12629       indices[0]++;
12630       node = _gtk_rbtree_next (tree, node);
12631     }
12632
12633   gtk_tree_path_free (path);
12634 }
12635
12636 /**
12637  * gtk_tree_view_expand_to_path:
12638  * @tree_view: A #GtkTreeView.
12639  * @path: path to a row.
12640  *
12641  * Expands the row at @path. This will also expand all parent rows of
12642  * @path as necessary.
12643  *
12644  * Since: 2.2
12645  **/
12646 void
12647 gtk_tree_view_expand_to_path (GtkTreeView *tree_view,
12648                               GtkTreePath *path)
12649 {
12650   gint i, depth;
12651   gint *indices;
12652   GtkTreePath *tmp;
12653
12654   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
12655   g_return_if_fail (path != NULL);
12656
12657   depth = gtk_tree_path_get_depth (path);
12658   indices = gtk_tree_path_get_indices (path);
12659
12660   tmp = gtk_tree_path_new ();
12661   g_return_if_fail (tmp != NULL);
12662
12663   for (i = 0; i < depth; i++)
12664     {
12665       gtk_tree_path_append_index (tmp, indices[i]);
12666       gtk_tree_view_expand_row (tree_view, tmp, FALSE);
12667     }
12668
12669   gtk_tree_path_free (tmp);
12670 }
12671
12672 /* FIXME the bool return values for expand_row and collapse_row are
12673  * not analagous; they should be TRUE if the row had children and
12674  * was not already in the requested state.
12675  */
12676
12677
12678 static gboolean
12679 gtk_tree_view_real_expand_row (GtkTreeView *tree_view,
12680                                GtkTreePath *path,
12681                                GtkRBTree   *tree,
12682                                GtkRBNode   *node,
12683                                gboolean     open_all,
12684                                gboolean     animate)
12685 {
12686   GtkTreeIter iter;
12687   GtkTreeIter temp;
12688   gboolean expand;
12689
12690   if (animate)
12691     g_object_get (gtk_widget_get_settings (GTK_WIDGET (tree_view)),
12692                   "gtk-enable-animations", &animate,
12693                   NULL);
12694
12695   remove_auto_expand_timeout (tree_view);
12696
12697   if (node->children && !open_all)
12698     return FALSE;
12699
12700   if (! GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_PARENT))
12701     return FALSE;
12702
12703   gtk_tree_model_get_iter (tree_view->priv->model, &iter, path);
12704   if (! gtk_tree_model_iter_has_child (tree_view->priv->model, &iter))
12705     return FALSE;
12706
12707
12708    if (node->children && open_all)
12709     {
12710       gboolean retval = FALSE;
12711       GtkTreePath *tmp_path = gtk_tree_path_copy (path);
12712
12713       gtk_tree_path_append_index (tmp_path, 0);
12714       tree = node->children;
12715       node = _gtk_rbtree_first (tree);
12716       /* try to expand the children */
12717       do
12718         {
12719          gboolean t;
12720          t = gtk_tree_view_real_expand_row (tree_view, tmp_path, tree, node,
12721                                             TRUE, animate);
12722          if (t)
12723            retval = TRUE;
12724
12725          gtk_tree_path_next (tmp_path);
12726          node = _gtk_rbtree_next (tree, node);
12727        }
12728       while (node != NULL);
12729
12730       gtk_tree_path_free (tmp_path);
12731
12732       return retval;
12733     }
12734
12735   g_signal_emit (tree_view, tree_view_signals[TEST_EXPAND_ROW], 0, &iter, path, &expand);
12736
12737   if (!gtk_tree_model_iter_has_child (tree_view->priv->model, &iter))
12738     return FALSE;
12739
12740   if (expand)
12741     return FALSE;
12742
12743   node->children = _gtk_rbtree_new ();
12744   node->children->parent_tree = tree;
12745   node->children->parent_node = node;
12746
12747   gtk_tree_model_iter_children (tree_view->priv->model, &temp, &iter);
12748
12749   gtk_tree_view_build_tree (tree_view,
12750                             node->children,
12751                             &temp,
12752                             gtk_tree_path_get_depth (path) + 1,
12753                             open_all);
12754
12755   _gtk_tree_view_accessible_expanded (tree_view, tree, node);
12756
12757   if (animate)
12758     {
12759       GtkStyleContext *context;
12760
12761       context = gtk_widget_get_style_context (GTK_WIDGET (tree_view));
12762
12763       gtk_style_context_save (context);
12764       gtk_style_context_add_class (context, GTK_STYLE_CLASS_EXPANDER);
12765
12766       gtk_style_context_notify_state_change (context, tree_view->priv->bin_window,
12767                                              node, GTK_STATE_ACTIVE, TRUE);
12768
12769       _gtk_style_context_invalidate_animation_areas (context);
12770       gtk_style_context_restore (context);
12771     }
12772
12773   install_presize_handler (tree_view);
12774
12775   g_signal_emit (tree_view, tree_view_signals[ROW_EXPANDED], 0, &iter, path);
12776   if (open_all && node->children)
12777     {
12778       _gtk_rbtree_traverse (node->children,
12779                             node->children->root,
12780                             G_PRE_ORDER,
12781                             gtk_tree_view_expand_all_emission_helper,
12782                             tree_view);
12783     }
12784   return TRUE;
12785 }
12786
12787
12788 /**
12789  * gtk_tree_view_expand_row:
12790  * @tree_view: a #GtkTreeView
12791  * @path: path to a row
12792  * @open_all: whether to recursively expand, or just expand immediate children
12793  *
12794  * Opens the row so its children are visible.
12795  *
12796  * Return value: %TRUE if the row existed and had children
12797  **/
12798 gboolean
12799 gtk_tree_view_expand_row (GtkTreeView *tree_view,
12800                           GtkTreePath *path,
12801                           gboolean     open_all)
12802 {
12803   GtkRBTree *tree;
12804   GtkRBNode *node;
12805
12806   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), FALSE);
12807   g_return_val_if_fail (tree_view->priv->model != NULL, FALSE);
12808   g_return_val_if_fail (path != NULL, FALSE);
12809
12810   if (_gtk_tree_view_find_node (tree_view,
12811                                 path,
12812                                 &tree,
12813                                 &node))
12814     return FALSE;
12815
12816   if (tree != NULL)
12817     return gtk_tree_view_real_expand_row (tree_view, path, tree, node, open_all, FALSE);
12818   else
12819     return FALSE;
12820 }
12821
12822 static gboolean
12823 gtk_tree_view_real_collapse_row (GtkTreeView *tree_view,
12824                                  GtkTreePath *path,
12825                                  GtkRBTree   *tree,
12826                                  GtkRBNode   *node,
12827                                  gboolean     animate)
12828 {
12829   GtkTreeIter iter;
12830   GtkTreeIter children;
12831   gboolean collapse;
12832   gint x, y;
12833   GList *list;
12834   GdkWindow *child;
12835   gboolean selection_changed, cursor_changed;
12836
12837   if (animate)
12838     g_object_get (gtk_widget_get_settings (GTK_WIDGET (tree_view)),
12839                   "gtk-enable-animations", &animate,
12840                   NULL);
12841
12842   remove_auto_expand_timeout (tree_view);
12843
12844   if (node->children == NULL)
12845     return FALSE;
12846   gtk_tree_model_get_iter (tree_view->priv->model, &iter, path);
12847
12848   g_signal_emit (tree_view, tree_view_signals[TEST_COLLAPSE_ROW], 0, &iter, path, &collapse);
12849
12850   if (collapse)
12851     return FALSE;
12852
12853   /* if the prelighted node is a child of us, we want to unprelight it.  We have
12854    * a chance to prelight the correct node below */
12855
12856   if (tree_view->priv->prelight_tree)
12857     {
12858       GtkRBTree *parent_tree;
12859       GtkRBNode *parent_node;
12860
12861       parent_tree = tree_view->priv->prelight_tree->parent_tree;
12862       parent_node = tree_view->priv->prelight_tree->parent_node;
12863       while (parent_tree)
12864         {
12865           if (parent_tree == tree && parent_node == node)
12866             {
12867               ensure_unprelighted (tree_view);
12868               break;
12869             }
12870           parent_node = parent_tree->parent_node;
12871           parent_tree = parent_tree->parent_tree;
12872         }
12873     }
12874
12875   TREE_VIEW_INTERNAL_ASSERT (gtk_tree_model_iter_children (tree_view->priv->model, &children, &iter), FALSE);
12876
12877   for (list = tree_view->priv->columns; list; list = list->next)
12878     {
12879       GtkTreeViewColumn *column = list->data;
12880
12881       if (gtk_tree_view_column_get_visible (column) == FALSE)
12882         continue;
12883       if (gtk_tree_view_column_get_sizing (column) == GTK_TREE_VIEW_COLUMN_AUTOSIZE)
12884         _gtk_tree_view_column_cell_set_dirty (column, TRUE);
12885     }
12886
12887   if (tree_view->priv->destroy_count_func)
12888     {
12889       GtkTreePath *child_path;
12890       gint child_count = 0;
12891       child_path = gtk_tree_path_copy (path);
12892       gtk_tree_path_down (child_path);
12893       if (node->children)
12894         _gtk_rbtree_traverse (node->children, node->children->root, G_POST_ORDER, count_children_helper, &child_count);
12895       tree_view->priv->destroy_count_func (tree_view, child_path, child_count, tree_view->priv->destroy_count_data);
12896       gtk_tree_path_free (child_path);
12897     }
12898
12899   if (tree_view->priv->cursor_node)
12900     {
12901       cursor_changed = (node->children == tree_view->priv->cursor_tree)
12902                        || _gtk_rbtree_contains (node->children, tree_view->priv->cursor_tree);
12903     }
12904
12905   if (gtk_tree_row_reference_valid (tree_view->priv->anchor))
12906     {
12907       GtkTreePath *anchor_path = gtk_tree_row_reference_get_path (tree_view->priv->anchor);
12908       if (gtk_tree_path_is_ancestor (path, anchor_path))
12909         {
12910           gtk_tree_row_reference_free (tree_view->priv->anchor);
12911           tree_view->priv->anchor = NULL;
12912         }
12913       gtk_tree_path_free (anchor_path);
12914     }
12915
12916   selection_changed = gtk_tree_view_unref_and_check_selection_tree (tree_view, node->children);
12917
12918   /* Stop a pending double click */
12919   tree_view->priv->last_button_x = -1;
12920   tree_view->priv->last_button_y = -1;
12921
12922   _gtk_tree_view_accessible_remove (tree_view, node->children, NULL);
12923   _gtk_tree_view_accessible_remove_state (tree_view,
12924                                           tree, node,
12925                                           GTK_CELL_RENDERER_EXPANDED);
12926
12927   _gtk_rbtree_remove (node->children);
12928
12929   if (cursor_changed)
12930     gtk_tree_view_real_set_cursor (tree_view, path, CLEAR_AND_SELECT | CURSOR_INVALID);
12931   if (selection_changed)
12932     g_signal_emit_by_name (tree_view->priv->selection, "changed");
12933
12934   if (animate)
12935     {
12936       GtkStyleContext *context;
12937
12938       context = gtk_widget_get_style_context (GTK_WIDGET (tree_view));
12939
12940       gtk_style_context_save (context);
12941       gtk_style_context_add_class (context, GTK_STYLE_CLASS_EXPANDER);
12942
12943       gtk_style_context_notify_state_change (context, tree_view->priv->bin_window,
12944                                              node, GTK_STATE_ACTIVE, FALSE);
12945
12946       _gtk_style_context_invalidate_animation_areas (context);
12947       gtk_style_context_restore (context);
12948     }
12949
12950   if (gtk_widget_get_mapped (GTK_WIDGET (tree_view)))
12951     {
12952       gtk_widget_queue_resize (GTK_WIDGET (tree_view));
12953     }
12954
12955   g_signal_emit (tree_view, tree_view_signals[ROW_COLLAPSED], 0, &iter, path);
12956
12957   if (gtk_widget_get_mapped (GTK_WIDGET (tree_view)))
12958     {
12959       /* now that we've collapsed all rows, we want to try to set the prelight
12960        * again. To do this, we fake a motion event and send it to ourselves. */
12961
12962       child = gdk_window_get_device_position (gdk_window_get_parent (tree_view->priv->bin_window),
12963                                               gdk_device_manager_get_client_pointer (
12964                                                 gdk_display_get_device_manager (
12965                                                   gtk_widget_get_display (GTK_WIDGET (tree_view)))),
12966                                               &x, &y, NULL);
12967       if (child == tree_view->priv->bin_window)
12968         {
12969           GdkEventMotion event;
12970           gint child_x, child_y;
12971
12972           gdk_window_get_position (child, &child_x, &child_y);
12973
12974           event.window = tree_view->priv->bin_window;
12975           event.x = x - child_x;
12976           event.y = y - child_y;
12977
12978           /* despite the fact this isn't a real event, I'm almost positive it will
12979            * never trigger a drag event.  maybe_drag is the only function that uses
12980            * more than just event.x and event.y. */
12981           gtk_tree_view_motion_bin_window (GTK_WIDGET (tree_view), &event);
12982         }
12983     }
12984
12985   return TRUE;
12986 }
12987
12988 /**
12989  * gtk_tree_view_collapse_row:
12990  * @tree_view: a #GtkTreeView
12991  * @path: path to a row in the @tree_view
12992  *
12993  * Collapses a row (hides its child rows, if they exist).
12994  *
12995  * Return value: %TRUE if the row was collapsed.
12996  **/
12997 gboolean
12998 gtk_tree_view_collapse_row (GtkTreeView *tree_view,
12999                             GtkTreePath *path)
13000 {
13001   GtkRBTree *tree;
13002   GtkRBNode *node;
13003
13004   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), FALSE);
13005   g_return_val_if_fail (tree_view->priv->tree != NULL, FALSE);
13006   g_return_val_if_fail (path != NULL, FALSE);
13007
13008   if (_gtk_tree_view_find_node (tree_view,
13009                                 path,
13010                                 &tree,
13011                                 &node))
13012     return FALSE;
13013
13014   if (tree == NULL || node->children == NULL)
13015     return FALSE;
13016
13017   return gtk_tree_view_real_collapse_row (tree_view, path, tree, node, FALSE);
13018 }
13019
13020 static void
13021 gtk_tree_view_map_expanded_rows_helper (GtkTreeView            *tree_view,
13022                                         GtkRBTree              *tree,
13023                                         GtkTreePath            *path,
13024                                         GtkTreeViewMappingFunc  func,
13025                                         gpointer                user_data)
13026 {
13027   GtkRBNode *node;
13028
13029   if (tree == NULL || tree->root == NULL)
13030     return;
13031
13032   node = _gtk_rbtree_first (tree);
13033
13034   while (node)
13035     {
13036       if (node->children)
13037         {
13038           (* func) (tree_view, path, user_data);
13039           gtk_tree_path_down (path);
13040           gtk_tree_view_map_expanded_rows_helper (tree_view, node->children, path, func, user_data);
13041           gtk_tree_path_up (path);
13042         }
13043       gtk_tree_path_next (path);
13044       node = _gtk_rbtree_next (tree, node);
13045     }
13046 }
13047
13048 /**
13049  * gtk_tree_view_map_expanded_rows:
13050  * @tree_view: A #GtkTreeView
13051  * @func: (scope call): A function to be called
13052  * @data: User data to be passed to the function.
13053  *
13054  * Calls @func on all expanded rows.
13055  **/
13056 void
13057 gtk_tree_view_map_expanded_rows (GtkTreeView            *tree_view,
13058                                  GtkTreeViewMappingFunc  func,
13059                                  gpointer                user_data)
13060 {
13061   GtkTreePath *path;
13062
13063   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
13064   g_return_if_fail (func != NULL);
13065
13066   path = gtk_tree_path_new_first ();
13067
13068   gtk_tree_view_map_expanded_rows_helper (tree_view,
13069                                           tree_view->priv->tree,
13070                                           path, func, user_data);
13071
13072   gtk_tree_path_free (path);
13073 }
13074
13075 /**
13076  * gtk_tree_view_row_expanded:
13077  * @tree_view: A #GtkTreeView.
13078  * @path: A #GtkTreePath to test expansion state.
13079  *
13080  * Returns %TRUE if the node pointed to by @path is expanded in @tree_view.
13081  *
13082  * Return value: %TRUE if #path is expanded.
13083  **/
13084 gboolean
13085 gtk_tree_view_row_expanded (GtkTreeView *tree_view,
13086                             GtkTreePath *path)
13087 {
13088   GtkRBTree *tree;
13089   GtkRBNode *node;
13090
13091   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), FALSE);
13092   g_return_val_if_fail (path != NULL, FALSE);
13093
13094   _gtk_tree_view_find_node (tree_view, path, &tree, &node);
13095
13096   if (node == NULL)
13097     return FALSE;
13098
13099   return (node->children != NULL);
13100 }
13101
13102 /**
13103  * gtk_tree_view_get_reorderable:
13104  * @tree_view: a #GtkTreeView
13105  *
13106  * Retrieves whether the user can reorder the tree via drag-and-drop. See
13107  * gtk_tree_view_set_reorderable().
13108  *
13109  * Return value: %TRUE if the tree can be reordered.
13110  **/
13111 gboolean
13112 gtk_tree_view_get_reorderable (GtkTreeView *tree_view)
13113 {
13114   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), FALSE);
13115
13116   return tree_view->priv->reorderable;
13117 }
13118
13119 /**
13120  * gtk_tree_view_set_reorderable:
13121  * @tree_view: A #GtkTreeView.
13122  * @reorderable: %TRUE, if the tree can be reordered.
13123  *
13124  * This function is a convenience function to allow you to reorder
13125  * models that support the #GtkTreeDragSourceIface and the
13126  * #GtkTreeDragDestIface.  Both #GtkTreeStore and #GtkListStore support
13127  * these.  If @reorderable is %TRUE, then the user can reorder the
13128  * model by dragging and dropping rows. The developer can listen to
13129  * these changes by connecting to the model's row_inserted and
13130  * row_deleted signals. The reordering is implemented by setting up
13131  * the tree view as a drag source and destination. Therefore, drag and
13132  * drop can not be used in a reorderable view for any other purpose.
13133  *
13134  * This function does not give you any degree of control over the order -- any
13135  * reordering is allowed.  If more control is needed, you should probably
13136  * handle drag and drop manually.
13137  **/
13138 void
13139 gtk_tree_view_set_reorderable (GtkTreeView *tree_view,
13140                                gboolean     reorderable)
13141 {
13142   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
13143
13144   reorderable = reorderable != FALSE;
13145
13146   if (tree_view->priv->reorderable == reorderable)
13147     return;
13148
13149   if (reorderable)
13150     {
13151       const GtkTargetEntry row_targets[] = {
13152         { "GTK_TREE_MODEL_ROW", GTK_TARGET_SAME_WIDGET, 0 }
13153       };
13154
13155       gtk_tree_view_enable_model_drag_source (tree_view,
13156                                               GDK_BUTTON1_MASK,
13157                                               row_targets,
13158                                               G_N_ELEMENTS (row_targets),
13159                                               GDK_ACTION_MOVE);
13160       gtk_tree_view_enable_model_drag_dest (tree_view,
13161                                             row_targets,
13162                                             G_N_ELEMENTS (row_targets),
13163                                             GDK_ACTION_MOVE);
13164     }
13165   else
13166     {
13167       gtk_tree_view_unset_rows_drag_source (tree_view);
13168       gtk_tree_view_unset_rows_drag_dest (tree_view);
13169     }
13170
13171   tree_view->priv->reorderable = reorderable;
13172
13173   g_object_notify (G_OBJECT (tree_view), "reorderable");
13174 }
13175
13176 static void
13177 gtk_tree_view_real_set_cursor (GtkTreeView     *tree_view,
13178                                GtkTreePath     *path,
13179                                SetCursorFlags   flags)
13180 {
13181   if (!(flags & CURSOR_INVALID) && tree_view->priv->cursor_node)
13182     {
13183       _gtk_tree_view_queue_draw_node (tree_view,
13184                                       tree_view->priv->cursor_tree,
13185                                       tree_view->priv->cursor_node,
13186                                       NULL);
13187     }
13188
13189   /* One cannot set the cursor on a separator.   Also, if
13190    * _gtk_tree_view_find_node returns TRUE, it ran out of tree
13191    * before finding the tree and node belonging to path.  The
13192    * path maps to a non-existing path and we will silently bail out.
13193    * We unset tree and node to avoid further processing.
13194    */
13195   if (row_is_separator (tree_view, NULL, path)
13196       || _gtk_tree_view_find_node (tree_view,
13197                                    path,
13198                                    &tree_view->priv->cursor_tree,
13199                                    &tree_view->priv->cursor_node))
13200     {
13201       tree_view->priv->cursor_tree = NULL;
13202       tree_view->priv->cursor_node = NULL;
13203     }
13204
13205   if (tree_view->priv->cursor_node != NULL)
13206     {
13207       GtkRBTree *new_tree = NULL;
13208       GtkRBNode *new_node = NULL;
13209
13210       if ((flags & CLEAR_AND_SELECT) && !tree_view->priv->modify_selection_pressed)
13211         {
13212           GtkTreeSelectMode mode = 0;
13213
13214           if (tree_view->priv->extend_selection_pressed)
13215             mode |= GTK_TREE_SELECT_MODE_EXTEND;
13216
13217           _gtk_tree_selection_internal_select_node (tree_view->priv->selection,
13218                                                     tree_view->priv->cursor_node,
13219                                                     tree_view->priv->cursor_tree,
13220                                                     path,
13221                                                     mode,
13222                                                     FALSE);
13223         }
13224
13225       /* We have to re-find tree and node here again, somebody might have
13226        * cleared the node or the whole tree in the GtkTreeSelection::changed
13227        * callback. If the nodes differ we bail out here.
13228        */
13229       _gtk_tree_view_find_node (tree_view, path, &new_tree, &new_node);
13230
13231       if (tree_view->priv->cursor_node != new_node)
13232         return;
13233
13234       if (flags & CLAMP_NODE)
13235         {
13236           gtk_tree_view_clamp_node_visible (tree_view,
13237                                             tree_view->priv->cursor_tree,
13238                                             tree_view->priv->cursor_node);
13239           _gtk_tree_view_queue_draw_node (tree_view,
13240                                           tree_view->priv->cursor_tree,
13241                                           tree_view->priv->cursor_node,
13242                                           NULL);
13243         }
13244     }
13245
13246   g_signal_emit (tree_view, tree_view_signals[CURSOR_CHANGED], 0);
13247 }
13248
13249 /**
13250  * gtk_tree_view_get_cursor:
13251  * @tree_view: A #GtkTreeView
13252  * @path: (out) (transfer full) (allow-none): A pointer to be filled with the current cursor path, or %NULL
13253  * @focus_column: (out) (transfer none) (allow-none): A pointer to be filled with the current focus column, or %NULL
13254  *
13255  * Fills in @path and @focus_column with the current path and focus column.  If
13256  * the cursor isn't currently set, then *@path will be %NULL.  If no column
13257  * currently has focus, then *@focus_column will be %NULL.
13258  *
13259  * The returned #GtkTreePath must be freed with gtk_tree_path_free() when
13260  * you are done with it.
13261  **/
13262 void
13263 gtk_tree_view_get_cursor (GtkTreeView        *tree_view,
13264                           GtkTreePath       **path,
13265                           GtkTreeViewColumn **focus_column)
13266 {
13267   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
13268
13269   if (path)
13270     {
13271       if (tree_view->priv->cursor_node)
13272         *path = _gtk_tree_path_new_from_rbtree (tree_view->priv->cursor_tree,
13273                                                 tree_view->priv->cursor_node);
13274       else
13275         *path = NULL;
13276     }
13277
13278   if (focus_column)
13279     {
13280       *focus_column = tree_view->priv->focus_column;
13281     }
13282 }
13283
13284 /**
13285  * gtk_tree_view_set_cursor:
13286  * @tree_view: A #GtkTreeView
13287  * @path: A #GtkTreePath
13288  * @focus_column: (allow-none): A #GtkTreeViewColumn, or %NULL
13289  * @start_editing: %TRUE if the specified cell should start being edited.
13290  *
13291  * Sets the current keyboard focus to be at @path, and selects it.  This is
13292  * useful when you want to focus the user's attention on a particular row.  If
13293  * @focus_column is not %NULL, then focus is given to the column specified by
13294  * it. Additionally, if @focus_column is specified, and @start_editing is
13295  * %TRUE, then editing should be started in the specified cell.
13296  * This function is often followed by @gtk_widget_grab_focus (@tree_view)
13297  * in order to give keyboard focus to the widget.  Please note that editing
13298  * can only happen when the widget is realized.
13299  *
13300  * If @path is invalid for @model, the current cursor (if any) will be unset
13301  * and the function will return without failing.
13302  **/
13303 void
13304 gtk_tree_view_set_cursor (GtkTreeView       *tree_view,
13305                           GtkTreePath       *path,
13306                           GtkTreeViewColumn *focus_column,
13307                           gboolean           start_editing)
13308 {
13309   gtk_tree_view_set_cursor_on_cell (tree_view, path, focus_column,
13310                                     NULL, start_editing);
13311 }
13312
13313 /**
13314  * gtk_tree_view_set_cursor_on_cell:
13315  * @tree_view: A #GtkTreeView
13316  * @path: A #GtkTreePath
13317  * @focus_column: (allow-none): A #GtkTreeViewColumn, or %NULL
13318  * @focus_cell: (allow-none): A #GtkCellRenderer, or %NULL
13319  * @start_editing: %TRUE if the specified cell should start being edited.
13320  *
13321  * Sets the current keyboard focus to be at @path, and selects it.  This is
13322  * useful when you want to focus the user's attention on a particular row.  If
13323  * @focus_column is not %NULL, then focus is given to the column specified by
13324  * it. If @focus_column and @focus_cell are not %NULL, and @focus_column
13325  * contains 2 or more editable or activatable cells, then focus is given to
13326  * the cell specified by @focus_cell. Additionally, if @focus_column is
13327  * specified, and @start_editing is %TRUE, then editing should be started in
13328  * the specified cell.  This function is often followed by
13329  * @gtk_widget_grab_focus (@tree_view) in order to give keyboard focus to the
13330  * widget.  Please note that editing can only happen when the widget is
13331  * realized.
13332  *
13333  * If @path is invalid for @model, the current cursor (if any) will be unset
13334  * and the function will return without failing.
13335  *
13336  * Since: 2.2
13337  **/
13338 void
13339 gtk_tree_view_set_cursor_on_cell (GtkTreeView       *tree_view,
13340                                   GtkTreePath       *path,
13341                                   GtkTreeViewColumn *focus_column,
13342                                   GtkCellRenderer   *focus_cell,
13343                                   gboolean           start_editing)
13344 {
13345   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
13346   g_return_if_fail (path != NULL);
13347   g_return_if_fail (focus_column == NULL || GTK_IS_TREE_VIEW_COLUMN (focus_column));
13348
13349   if (!tree_view->priv->model)
13350     return;
13351
13352   if (focus_cell)
13353     {
13354       g_return_if_fail (focus_column);
13355       g_return_if_fail (GTK_IS_CELL_RENDERER (focus_cell));
13356     }
13357
13358   /* cancel the current editing, if it exists */
13359   if (tree_view->priv->edited_column &&
13360       gtk_cell_area_get_edit_widget
13361       (gtk_cell_layout_get_area (GTK_CELL_LAYOUT (tree_view->priv->edited_column))))
13362     gtk_tree_view_stop_editing (tree_view, TRUE);
13363
13364   gtk_tree_view_real_set_cursor (tree_view, path, CLEAR_AND_SELECT | CLAMP_NODE);
13365
13366   if (focus_column &&
13367       gtk_tree_view_column_get_visible (focus_column))
13368     {
13369       GList *list;
13370       gboolean column_in_tree = FALSE;
13371
13372       for (list = tree_view->priv->columns; list; list = list->next)
13373         if (list->data == focus_column)
13374           {
13375             column_in_tree = TRUE;
13376             break;
13377           }
13378       g_return_if_fail (column_in_tree);
13379       tree_view->priv->focus_column = focus_column;
13380       if (focus_cell)
13381         gtk_tree_view_column_focus_cell (focus_column, focus_cell);
13382       if (start_editing)
13383         gtk_tree_view_start_editing (tree_view, path, TRUE);
13384     }
13385 }
13386
13387 /**
13388  * gtk_tree_view_get_bin_window:
13389  * @tree_view: A #GtkTreeView
13390  *
13391  * Returns the window that @tree_view renders to.
13392  * This is used primarily to compare to <literal>event->window</literal>
13393  * to confirm that the event on @tree_view is on the right window.
13394  *
13395  * Return value: (transfer none): A #GdkWindow, or %NULL when @tree_view
13396  *     hasn't been realized yet
13397  **/
13398 GdkWindow *
13399 gtk_tree_view_get_bin_window (GtkTreeView *tree_view)
13400 {
13401   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), NULL);
13402
13403   return tree_view->priv->bin_window;
13404 }
13405
13406 /**
13407  * gtk_tree_view_get_path_at_pos:
13408  * @tree_view: A #GtkTreeView.
13409  * @x: The x position to be identified (relative to bin_window).
13410  * @y: The y position to be identified (relative to bin_window).
13411  * @path: (out) (allow-none): A pointer to a #GtkTreePath pointer to be filled in, or %NULL
13412  * @column: (out) (transfer none) (allow-none): A pointer to a #GtkTreeViewColumn pointer to be filled in, or %NULL
13413  * @cell_x: (out) (allow-none): A pointer where the X coordinate relative to the cell can be placed, or %NULL
13414  * @cell_y: (out) (allow-none): A pointer where the Y coordinate relative to the cell can be placed, or %NULL
13415  *
13416  * Finds the path at the point (@x, @y), relative to bin_window coordinates
13417  * (please see gtk_tree_view_get_bin_window()).
13418  * That is, @x and @y are relative to an events coordinates. @x and @y must
13419  * come from an event on the @tree_view only where <literal>event->window ==
13420  * gtk_tree_view_get_bin_window (<!-- -->)</literal>. It is primarily for
13421  * things like popup menus. If @path is non-%NULL, then it will be filled
13422  * with the #GtkTreePath at that point.  This path should be freed with
13423  * gtk_tree_path_free().  If @column is non-%NULL, then it will be filled
13424  * with the column at that point.  @cell_x and @cell_y return the coordinates
13425  * relative to the cell background (i.e. the @background_area passed to
13426  * gtk_cell_renderer_render()).  This function is only meaningful if
13427  * @tree_view is realized.  Therefore this function will always return %FALSE
13428  * if @tree_view is not realized or does not have a model.
13429  *
13430  * For converting widget coordinates (eg. the ones you get from
13431  * GtkWidget::query-tooltip), please see
13432  * gtk_tree_view_convert_widget_to_bin_window_coords().
13433  *
13434  * Return value: %TRUE if a row exists at that coordinate.
13435  **/
13436 gboolean
13437 gtk_tree_view_get_path_at_pos (GtkTreeView        *tree_view,
13438                                gint                x,
13439                                gint                y,
13440                                GtkTreePath       **path,
13441                                GtkTreeViewColumn **column,
13442                                gint               *cell_x,
13443                                gint               *cell_y)
13444 {
13445   GtkRBTree *tree;
13446   GtkRBNode *node;
13447   gint y_offset;
13448
13449   g_return_val_if_fail (tree_view != NULL, FALSE);
13450
13451   if (path)
13452     *path = NULL;
13453   if (column)
13454     *column = NULL;
13455
13456   if (tree_view->priv->bin_window == NULL)
13457     return FALSE;
13458
13459   if (tree_view->priv->tree == NULL)
13460     return FALSE;
13461
13462   if (x > gtk_adjustment_get_upper (tree_view->priv->hadjustment))
13463     return FALSE;
13464
13465   if (x < 0 || y < 0)
13466     return FALSE;
13467
13468   if (column || cell_x)
13469     {
13470       GtkTreeViewColumn *tmp_column;
13471       GtkTreeViewColumn *last_column = NULL;
13472       GList *list;
13473       gint remaining_x = x;
13474       gboolean found = FALSE;
13475       gboolean rtl;
13476       gint width;
13477
13478       rtl = (gtk_widget_get_direction (GTK_WIDGET (tree_view)) == GTK_TEXT_DIR_RTL);
13479       for (list = (rtl ? g_list_last (tree_view->priv->columns) : g_list_first (tree_view->priv->columns));
13480            list;
13481            list = (rtl ? list->prev : list->next))
13482         {
13483           tmp_column = list->data;
13484
13485           if (gtk_tree_view_column_get_visible (tmp_column) == FALSE)
13486             continue;
13487
13488           last_column = tmp_column;
13489           width = gtk_tree_view_column_get_width (tmp_column);
13490           if (remaining_x <= width)
13491             {
13492               found = TRUE;
13493
13494               if (column)
13495                 *column = tmp_column;
13496
13497               if (cell_x)
13498                 *cell_x = remaining_x;
13499
13500               break;
13501             }
13502           remaining_x -= width;
13503         }
13504
13505       /* If found is FALSE and there is a last_column, then it the remainder
13506        * space is in that area
13507        */
13508       if (!found)
13509         {
13510           if (last_column)
13511             {
13512               if (column)
13513                 *column = last_column;
13514
13515               if (cell_x)
13516                 *cell_x = gtk_tree_view_column_get_width (last_column) + remaining_x;
13517             }
13518           else
13519             {
13520               return FALSE;
13521             }
13522         }
13523     }
13524
13525   y_offset = _gtk_rbtree_find_offset (tree_view->priv->tree,
13526                                       TREE_WINDOW_Y_TO_RBTREE_Y (tree_view, y),
13527                                       &tree, &node);
13528
13529   if (tree == NULL)
13530     return FALSE;
13531
13532   if (cell_y)
13533     *cell_y = y_offset;
13534
13535   if (path)
13536     *path = _gtk_tree_path_new_from_rbtree (tree, node);
13537
13538   return TRUE;
13539 }
13540
13541
13542 static inline gint
13543 gtk_tree_view_get_cell_area_height (GtkTreeView *tree_view,
13544                                     GtkRBNode   *node,
13545                                     gint         vertical_separator)
13546 {
13547   int height;
13548
13549   /* The "cell" areas are the cell_area passed in to gtk_cell_renderer_render(),
13550    * i.e. just the cells, no spacing.
13551    *
13552    * The cell area height is at least expander_size - vertical_separator.
13553    * For regular nodes, the height is then at least expander_size. We should
13554    * be able to enforce the expander_size minimum here, because this
13555    * function will not be called for irregular (e.g. separator) rows.
13556    */
13557   height = gtk_tree_view_get_row_height (tree_view, node);
13558   if (height < tree_view->priv->expander_size)
13559     height = tree_view->priv->expander_size;
13560
13561   return height - vertical_separator;
13562 }
13563
13564 static inline gint
13565 gtk_tree_view_get_cell_area_y_offset (GtkTreeView *tree_view,
13566                                       GtkRBTree   *tree,
13567                                       GtkRBNode   *node,
13568                                       gint         vertical_separator)
13569 {
13570   int offset;
13571
13572   offset = gtk_tree_view_get_row_y_offset (tree_view, tree, node);
13573   offset += vertical_separator / 2;
13574
13575   return offset;
13576 }
13577
13578 /**
13579  * gtk_tree_view_get_cell_area:
13580  * @tree_view: a #GtkTreeView
13581  * @path: (allow-none): a #GtkTreePath for the row, or %NULL to get only horizontal coordinates
13582  * @column: (allow-none): a #GtkTreeViewColumn for the column, or %NULL to get only vertical coordinates
13583  * @rect: (out): rectangle to fill with cell rect
13584  *
13585  * Fills the bounding rectangle in bin_window coordinates for the cell at the
13586  * row specified by @path and the column specified by @column.  If @path is
13587  * %NULL, or points to a path not currently displayed, the @y and @height fields
13588  * of the rectangle will be filled with 0. If @column is %NULL, the @x and @width
13589  * fields will be filled with 0.  The sum of all cell rects does not cover the
13590  * entire tree; there are extra pixels in between rows, for example. The
13591  * returned rectangle is equivalent to the @cell_area passed to
13592  * gtk_cell_renderer_render().  This function is only valid if @tree_view is
13593  * realized.
13594  **/
13595 void
13596 gtk_tree_view_get_cell_area (GtkTreeView        *tree_view,
13597                              GtkTreePath        *path,
13598                              GtkTreeViewColumn  *column,
13599                              GdkRectangle       *rect)
13600 {
13601   GtkRBTree *tree = NULL;
13602   GtkRBNode *node = NULL;
13603   gint vertical_separator;
13604   gint horizontal_separator;
13605
13606   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
13607   g_return_if_fail (column == NULL || GTK_IS_TREE_VIEW_COLUMN (column));
13608   g_return_if_fail (rect != NULL);
13609   g_return_if_fail (!column || gtk_tree_view_column_get_tree_view (column) == (GtkWidget *) tree_view);
13610   g_return_if_fail (gtk_widget_get_realized (GTK_WIDGET (tree_view)));
13611
13612   gtk_widget_style_get (GTK_WIDGET (tree_view),
13613                         "vertical-separator", &vertical_separator,
13614                         "horizontal-separator", &horizontal_separator,
13615                         NULL);
13616
13617   rect->x = 0;
13618   rect->y = 0;
13619   rect->width = 0;
13620   rect->height = 0;
13621
13622   if (column)
13623     {
13624       rect->x = gtk_tree_view_column_get_x_offset (column) + horizontal_separator/2;
13625       rect->width = gtk_tree_view_column_get_width (column) - horizontal_separator;
13626     }
13627
13628   if (path)
13629     {
13630       gboolean ret = _gtk_tree_view_find_node (tree_view, path, &tree, &node);
13631
13632       /* Get vertical coords */
13633       if ((!ret && tree == NULL) || ret)
13634         return;
13635
13636       if (row_is_separator (tree_view, NULL, path))
13637         {
13638           /* There isn't really a "cell area" for separator, so we
13639            * return the y, height values for background area instead.
13640            */
13641           rect->y = gtk_tree_view_get_row_y_offset (tree_view, tree, node);
13642           rect->height = gtk_tree_view_get_row_height (tree_view, node);
13643         }
13644       else
13645         {
13646           rect->y = gtk_tree_view_get_cell_area_y_offset (tree_view, tree, node,
13647                                                           vertical_separator);
13648           rect->height = gtk_tree_view_get_cell_area_height (tree_view, node,
13649                                                              vertical_separator);
13650         }
13651
13652       if (column &&
13653           gtk_tree_view_is_expander_column (tree_view, column))
13654         {
13655           gint depth = gtk_tree_path_get_depth (path);
13656           gboolean rtl;
13657
13658           rtl = gtk_widget_get_direction (GTK_WIDGET (tree_view)) == GTK_TEXT_DIR_RTL;
13659
13660           if (!rtl)
13661             rect->x += (depth - 1) * tree_view->priv->level_indentation;
13662           rect->width -= (depth - 1) * tree_view->priv->level_indentation;
13663
13664           if (gtk_tree_view_draw_expanders (tree_view))
13665             {
13666               if (!rtl)
13667                 rect->x += depth * tree_view->priv->expander_size;
13668               rect->width -= depth * tree_view->priv->expander_size;
13669             }
13670
13671           rect->width = MAX (rect->width, 0);
13672         }
13673     }
13674 }
13675
13676 static inline gint
13677 gtk_tree_view_get_row_height (GtkTreeView *tree_view,
13678                               GtkRBNode   *node)
13679 {
13680   int height;
13681
13682   /* The "background" areas of all rows/cells add up to cover the entire tree.
13683    * The background includes all inter-row and inter-cell spacing.
13684    *
13685    * If the row pointed at by node does not have a height set, we default
13686    * to expander_size, which is the minimum height for regular nodes.
13687    * Non-regular nodes (e.g. separators) can have a height set smaller
13688    * than expander_size and should not be overruled here.
13689    */
13690   height = GTK_RBNODE_GET_HEIGHT (node);
13691   if (height <= 0)
13692     height = tree_view->priv->expander_size;
13693
13694   return height;
13695 }
13696
13697 static inline gint
13698 gtk_tree_view_get_row_y_offset (GtkTreeView *tree_view,
13699                                 GtkRBTree   *tree,
13700                                 GtkRBNode   *node)
13701 {
13702   int offset;
13703
13704   offset = _gtk_rbtree_node_find_offset (tree, node);
13705
13706   return RBTREE_Y_TO_TREE_WINDOW_Y (tree_view, offset);
13707 }
13708
13709 /**
13710  * gtk_tree_view_get_background_area:
13711  * @tree_view: a #GtkTreeView
13712  * @path: (allow-none): a #GtkTreePath for the row, or %NULL to get only horizontal coordinates
13713  * @column: (allow-none): a #GtkTreeViewColumn for the column, or %NULL to get only vertical coordiantes
13714  * @rect: (out): rectangle to fill with cell background rect
13715  *
13716  * Fills the bounding rectangle in bin_window coordinates for the cell at the
13717  * row specified by @path and the column specified by @column.  If @path is
13718  * %NULL, or points to a node not found in the tree, the @y and @height fields of
13719  * the rectangle will be filled with 0. If @column is %NULL, the @x and @width
13720  * fields will be filled with 0.  The returned rectangle is equivalent to the
13721  * @background_area passed to gtk_cell_renderer_render().  These background
13722  * areas tile to cover the entire bin window.  Contrast with the @cell_area,
13723  * returned by gtk_tree_view_get_cell_area(), which returns only the cell
13724  * itself, excluding surrounding borders and the tree expander area.
13725  *
13726  **/
13727 void
13728 gtk_tree_view_get_background_area (GtkTreeView        *tree_view,
13729                                    GtkTreePath        *path,
13730                                    GtkTreeViewColumn  *column,
13731                                    GdkRectangle       *rect)
13732 {
13733   GtkRBTree *tree = NULL;
13734   GtkRBNode *node = NULL;
13735
13736   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
13737   g_return_if_fail (column == NULL || GTK_IS_TREE_VIEW_COLUMN (column));
13738   g_return_if_fail (rect != NULL);
13739
13740   rect->x = 0;
13741   rect->y = 0;
13742   rect->width = 0;
13743   rect->height = 0;
13744
13745   if (path)
13746     {
13747       /* Get vertical coords */
13748
13749       if (!_gtk_tree_view_find_node (tree_view, path, &tree, &node) &&
13750           tree == NULL)
13751         return;
13752
13753       rect->y = gtk_tree_view_get_row_y_offset (tree_view, tree, node);
13754       rect->height = gtk_tree_view_get_row_height (tree_view, node);
13755     }
13756
13757   if (column)
13758     {
13759       gint x2 = 0;
13760
13761       gtk_tree_view_get_background_xrange (tree_view, tree, column, &rect->x, &x2);
13762       rect->width = x2 - rect->x;
13763     }
13764 }
13765
13766 /**
13767  * gtk_tree_view_get_visible_rect:
13768  * @tree_view: a #GtkTreeView
13769  * @visible_rect: (out): rectangle to fill
13770  *
13771  * Fills @visible_rect with the currently-visible region of the
13772  * buffer, in tree coordinates. Convert to bin_window coordinates with
13773  * gtk_tree_view_convert_tree_to_bin_window_coords().
13774  * Tree coordinates start at 0,0 for row 0 of the tree, and cover the entire
13775  * scrollable area of the tree.
13776  **/
13777 void
13778 gtk_tree_view_get_visible_rect (GtkTreeView  *tree_view,
13779                                 GdkRectangle *visible_rect)
13780 {
13781   GtkAllocation allocation;
13782   GtkWidget *widget;
13783
13784   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
13785
13786   widget = GTK_WIDGET (tree_view);
13787
13788   if (visible_rect)
13789     {
13790       gtk_widget_get_allocation (widget, &allocation);
13791       visible_rect->x = gtk_adjustment_get_value (tree_view->priv->hadjustment);
13792       visible_rect->y = gtk_adjustment_get_value (tree_view->priv->vadjustment);
13793       visible_rect->width = allocation.width;
13794       visible_rect->height = allocation.height - gtk_tree_view_get_effective_header_height (tree_view);
13795     }
13796 }
13797
13798 /**
13799  * gtk_tree_view_convert_widget_to_tree_coords:
13800  * @tree_view: a #GtkTreeView
13801  * @wx: X coordinate relative to the widget
13802  * @wy: Y coordinate relative to the widget
13803  * @tx: (out): return location for tree X coordinate
13804  * @ty: (out): return location for tree Y coordinate
13805  *
13806  * Converts widget coordinates to coordinates for the
13807  * tree (the full scrollable area of the tree).
13808  *
13809  * Since: 2.12
13810  **/
13811 void
13812 gtk_tree_view_convert_widget_to_tree_coords (GtkTreeView *tree_view,
13813                                              gint         wx,
13814                                              gint         wy,
13815                                              gint        *tx,
13816                                              gint        *ty)
13817 {
13818   gint x, y;
13819
13820   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
13821
13822   gtk_tree_view_convert_widget_to_bin_window_coords (tree_view,
13823                                                      wx, wy,
13824                                                      &x, &y);
13825   gtk_tree_view_convert_bin_window_to_tree_coords (tree_view,
13826                                                    x, y,
13827                                                    tx, ty);
13828 }
13829
13830 /**
13831  * gtk_tree_view_convert_tree_to_widget_coords:
13832  * @tree_view: a #GtkTreeView
13833  * @tx: X coordinate relative to the tree
13834  * @ty: Y coordinate relative to the tree
13835  * @wx: (out): return location for widget X coordinate
13836  * @wy: (out): return location for widget Y coordinate
13837  *
13838  * Converts tree coordinates (coordinates in full scrollable area of the tree)
13839  * to widget coordinates.
13840  *
13841  * Since: 2.12
13842  **/
13843 void
13844 gtk_tree_view_convert_tree_to_widget_coords (GtkTreeView *tree_view,
13845                                              gint         tx,
13846                                              gint         ty,
13847                                              gint        *wx,
13848                                              gint        *wy)
13849 {
13850   gint x, y;
13851
13852   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
13853
13854   gtk_tree_view_convert_tree_to_bin_window_coords (tree_view,
13855                                                    tx, ty,
13856                                                    &x, &y);
13857   gtk_tree_view_convert_bin_window_to_widget_coords (tree_view,
13858                                                      x, y,
13859                                                      wx, wy);
13860 }
13861
13862 /**
13863  * gtk_tree_view_convert_widget_to_bin_window_coords:
13864  * @tree_view: a #GtkTreeView
13865  * @wx: X coordinate relative to the widget
13866  * @wy: Y coordinate relative to the widget
13867  * @bx: (out): return location for bin_window X coordinate
13868  * @by: (out): return location for bin_window Y coordinate
13869  *
13870  * Converts widget coordinates to coordinates for the bin_window
13871  * (see gtk_tree_view_get_bin_window()).
13872  *
13873  * Since: 2.12
13874  **/
13875 void
13876 gtk_tree_view_convert_widget_to_bin_window_coords (GtkTreeView *tree_view,
13877                                                    gint         wx,
13878                                                    gint         wy,
13879                                                    gint        *bx,
13880                                                    gint        *by)
13881 {
13882   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
13883
13884   if (bx)
13885     *bx = wx + gtk_adjustment_get_value (tree_view->priv->hadjustment);
13886   if (by)
13887     *by = wy - gtk_tree_view_get_effective_header_height (tree_view);
13888 }
13889
13890 /**
13891  * gtk_tree_view_convert_bin_window_to_widget_coords:
13892  * @tree_view: a #GtkTreeView
13893  * @bx: bin_window X coordinate
13894  * @by: bin_window Y coordinate
13895  * @wx: (out): return location for widget X coordinate
13896  * @wy: (out): return location for widget Y coordinate
13897  *
13898  * Converts bin_window coordinates (see gtk_tree_view_get_bin_window())
13899  * to widget relative coordinates.
13900  *
13901  * Since: 2.12
13902  **/
13903 void
13904 gtk_tree_view_convert_bin_window_to_widget_coords (GtkTreeView *tree_view,
13905                                                    gint         bx,
13906                                                    gint         by,
13907                                                    gint        *wx,
13908                                                    gint        *wy)
13909 {
13910   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
13911
13912   if (wx)
13913     *wx = bx - gtk_adjustment_get_value (tree_view->priv->hadjustment);
13914   if (wy)
13915     *wy = by + gtk_tree_view_get_effective_header_height (tree_view);
13916 }
13917
13918 /**
13919  * gtk_tree_view_convert_tree_to_bin_window_coords:
13920  * @tree_view: a #GtkTreeView
13921  * @tx: tree X coordinate
13922  * @ty: tree Y coordinate
13923  * @bx: (out): return location for X coordinate relative to bin_window
13924  * @by: (out): return location for Y coordinate relative to bin_window
13925  *
13926  * Converts tree coordinates (coordinates in full scrollable area of the tree)
13927  * to bin_window coordinates.
13928  *
13929  * Since: 2.12
13930  **/
13931 void
13932 gtk_tree_view_convert_tree_to_bin_window_coords (GtkTreeView *tree_view,
13933                                                  gint         tx,
13934                                                  gint         ty,
13935                                                  gint        *bx,
13936                                                  gint        *by)
13937 {
13938   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
13939
13940   if (bx)
13941     *bx = tx;
13942   if (by)
13943     *by = ty - tree_view->priv->dy;
13944 }
13945
13946 /**
13947  * gtk_tree_view_convert_bin_window_to_tree_coords:
13948  * @tree_view: a #GtkTreeView
13949  * @bx: X coordinate relative to bin_window
13950  * @by: Y coordinate relative to bin_window
13951  * @tx: (out): return location for tree X coordinate
13952  * @ty: (out): return location for tree Y coordinate
13953  *
13954  * Converts bin_window coordinates to coordinates for the
13955  * tree (the full scrollable area of the tree).
13956  *
13957  * Since: 2.12
13958  **/
13959 void
13960 gtk_tree_view_convert_bin_window_to_tree_coords (GtkTreeView *tree_view,
13961                                                  gint         bx,
13962                                                  gint         by,
13963                                                  gint        *tx,
13964                                                  gint        *ty)
13965 {
13966   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
13967
13968   if (tx)
13969     *tx = bx;
13970   if (ty)
13971     *ty = by + tree_view->priv->dy;
13972 }
13973
13974
13975
13976 /**
13977  * gtk_tree_view_get_visible_range:
13978  * @tree_view: A #GtkTreeView
13979  * @start_path: (out) (allow-none): Return location for start of region,
13980  *              or %NULL.
13981  * @end_path: (out) (allow-none): Return location for end of region, or %NULL.
13982  *
13983  * Sets @start_path and @end_path to be the first and last visible path.
13984  * Note that there may be invisible paths in between.
13985  *
13986  * The paths should be freed with gtk_tree_path_free() after use.
13987  *
13988  * Returns: %TRUE, if valid paths were placed in @start_path and @end_path.
13989  *
13990  * Since: 2.8
13991  **/
13992 gboolean
13993 gtk_tree_view_get_visible_range (GtkTreeView  *tree_view,
13994                                  GtkTreePath **start_path,
13995                                  GtkTreePath **end_path)
13996 {
13997   GtkRBTree *tree;
13998   GtkRBNode *node;
13999   gboolean retval;
14000
14001   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), FALSE);
14002
14003   if (!tree_view->priv->tree)
14004     return FALSE;
14005
14006   retval = TRUE;
14007
14008   if (start_path)
14009     {
14010       _gtk_rbtree_find_offset (tree_view->priv->tree,
14011                                TREE_WINDOW_Y_TO_RBTREE_Y (tree_view, 0),
14012                                &tree, &node);
14013       if (node)
14014         *start_path = _gtk_tree_path_new_from_rbtree (tree, node);
14015       else
14016         retval = FALSE;
14017     }
14018
14019   if (end_path)
14020     {
14021       gint y;
14022
14023       if (tree_view->priv->height < gtk_adjustment_get_page_size (tree_view->priv->vadjustment))
14024         y = tree_view->priv->height - 1;
14025       else
14026         y = TREE_WINDOW_Y_TO_RBTREE_Y (tree_view, gtk_adjustment_get_page_size (tree_view->priv->vadjustment)) - 1;
14027
14028       _gtk_rbtree_find_offset (tree_view->priv->tree, y, &tree, &node);
14029       if (node)
14030         *end_path = _gtk_tree_path_new_from_rbtree (tree, node);
14031       else
14032         retval = FALSE;
14033     }
14034
14035   return retval;
14036 }
14037
14038 /**
14039  * gtk_tree_view_is_blank_at_pos:
14040  * @tree_view: A #GtkTreeView
14041  * @x: The x position to be identified (relative to bin_window)
14042  * @y: The y position to be identified (relative to bin_window)
14043  * @path: (out) (allow-none): A pointer to a #GtkTreePath pointer to be filled in, or %NULL
14044  * @column: (out) (allow-none): A pointer to a #GtkTreeViewColumn pointer to be filled in, or %NULL
14045  * @cell_x: (out) (allow-none): A pointer where the X coordinate relative to the cell can be placed, or %NULL
14046  * @cell_y: (out) (allow-none): A pointer where the Y coordinate relative to the cell can be placed, or %NULL
14047  *
14048  * Determine whether the point (@x, @y) in @tree_view is blank, that is no
14049  * cell content nor an expander arrow is drawn at the location. If so, the
14050  * location can be considered as the background. You might wish to take
14051  * special action on clicks on the background, such as clearing a current
14052  * selection, having a custom context menu or starting rubber banding.
14053  *
14054  * The @x and @y coordinate that are provided must be relative to bin_window
14055  * coordinates.  That is, @x and @y must come from an event on @tree_view
14056  * where <literal>event->window == gtk_tree_view_get_bin_window (<!-- -->)</literal>.
14057  *
14058  * For converting widget coordinates (eg. the ones you get from
14059  * GtkWidget::query-tooltip), please see
14060  * gtk_tree_view_convert_widget_to_bin_window_coords().
14061  *
14062  * The @path, @column, @cell_x and @cell_y arguments will be filled in
14063  * likewise as for gtk_tree_view_get_path_at_pos().  Please see
14064  * gtk_tree_view_get_path_at_pos() for more information.
14065  *
14066  * Return value: %TRUE if the area at the given coordinates is blank,
14067  * %FALSE otherwise.
14068  *
14069  * Since: 3.0
14070  */
14071 gboolean
14072 gtk_tree_view_is_blank_at_pos (GtkTreeView       *tree_view,
14073                                gint                x,
14074                                gint                y,
14075                                GtkTreePath       **path,
14076                                GtkTreeViewColumn **column,
14077                                gint               *cell_x,
14078                                gint               *cell_y)
14079 {
14080   GtkRBTree *tree;
14081   GtkRBNode *node;
14082   GtkTreeIter iter;
14083   GtkTreePath *real_path;
14084   GtkTreeViewColumn *real_column;
14085   GdkRectangle cell_area, background_area;
14086
14087   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), FALSE);
14088
14089   if (!gtk_tree_view_get_path_at_pos (tree_view, x, y,
14090                                       &real_path, &real_column,
14091                                       cell_x, cell_y))
14092     /* If there's no path here, it is blank */
14093     return TRUE;
14094
14095   if (path)
14096     *path = real_path;
14097
14098   if (column)
14099     *column = real_column;
14100
14101   gtk_tree_model_get_iter (tree_view->priv->model, &iter, real_path);
14102   _gtk_tree_view_find_node (tree_view, real_path, &tree, &node);
14103
14104   /* Check if there's an expander arrow at (x, y) */
14105   if (real_column == tree_view->priv->expander_column
14106       && gtk_tree_view_draw_expanders (tree_view))
14107     {
14108       gboolean over_arrow;
14109
14110       over_arrow = coords_are_over_arrow (tree_view, tree, node, x, y);
14111
14112       if (over_arrow)
14113         {
14114           if (!path)
14115             gtk_tree_path_free (real_path);
14116           return FALSE;
14117         }
14118     }
14119
14120   /* Otherwise, have the column see if there's a cell at (x, y) */
14121   gtk_tree_view_column_cell_set_cell_data (real_column,
14122                                            tree_view->priv->model,
14123                                            &iter,
14124                                            GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_PARENT),
14125                                            node->children ? TRUE : FALSE);
14126
14127   gtk_tree_view_get_background_area (tree_view, real_path, real_column,
14128                                      &background_area);
14129   gtk_tree_view_get_cell_area (tree_view, real_path, real_column,
14130                                &cell_area);
14131
14132   if (!path)
14133     gtk_tree_path_free (real_path);
14134
14135   return _gtk_tree_view_column_is_blank_at_pos (real_column,
14136                                                 &cell_area,
14137                                                 &background_area,
14138                                                 x, y);
14139 }
14140
14141 static void
14142 unset_reorderable (GtkTreeView *tree_view)
14143 {
14144   if (tree_view->priv->reorderable)
14145     {
14146       tree_view->priv->reorderable = FALSE;
14147       g_object_notify (G_OBJECT (tree_view), "reorderable");
14148     }
14149 }
14150
14151 /**
14152  * gtk_tree_view_enable_model_drag_source:
14153  * @tree_view: a #GtkTreeView
14154  * @start_button_mask: Mask of allowed buttons to start drag
14155  * @targets: (array length=n_targets): the table of targets that the drag will support
14156  * @n_targets: the number of items in @targets
14157  * @actions: the bitmask of possible actions for a drag from this
14158  *    widget
14159  *
14160  * Turns @tree_view into a drag source for automatic DND. Calling this
14161  * method sets #GtkTreeView:reorderable to %FALSE.
14162  **/
14163 void
14164 gtk_tree_view_enable_model_drag_source (GtkTreeView              *tree_view,
14165                                         GdkModifierType           start_button_mask,
14166                                         const GtkTargetEntry     *targets,
14167                                         gint                      n_targets,
14168                                         GdkDragAction             actions)
14169 {
14170   TreeViewDragInfo *di;
14171
14172   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
14173
14174   gtk_drag_source_set (GTK_WIDGET (tree_view),
14175                        0,
14176                        targets,
14177                        n_targets,
14178                        actions);
14179
14180   di = ensure_info (tree_view);
14181
14182   di->start_button_mask = start_button_mask;
14183   di->source_actions = actions;
14184   di->source_set = TRUE;
14185
14186   unset_reorderable (tree_view);
14187 }
14188
14189 /**
14190  * gtk_tree_view_enable_model_drag_dest:
14191  * @tree_view: a #GtkTreeView
14192  * @targets: (array length=n_targets): the table of targets that
14193  *           the drag will support
14194  * @n_targets: the number of items in @targets
14195  * @actions: the bitmask of possible actions for a drag from this
14196  *    widget
14197  *
14198  * Turns @tree_view into a drop destination for automatic DND. Calling
14199  * this method sets #GtkTreeView:reorderable to %FALSE.
14200  **/
14201 void
14202 gtk_tree_view_enable_model_drag_dest (GtkTreeView              *tree_view,
14203                                       const GtkTargetEntry     *targets,
14204                                       gint                      n_targets,
14205                                       GdkDragAction             actions)
14206 {
14207   TreeViewDragInfo *di;
14208
14209   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
14210
14211   gtk_drag_dest_set (GTK_WIDGET (tree_view),
14212                      0,
14213                      targets,
14214                      n_targets,
14215                      actions);
14216
14217   di = ensure_info (tree_view);
14218   di->dest_set = TRUE;
14219
14220   unset_reorderable (tree_view);
14221 }
14222
14223 /**
14224  * gtk_tree_view_unset_rows_drag_source:
14225  * @tree_view: a #GtkTreeView
14226  *
14227  * Undoes the effect of
14228  * gtk_tree_view_enable_model_drag_source(). Calling this method sets
14229  * #GtkTreeView:reorderable to %FALSE.
14230  **/
14231 void
14232 gtk_tree_view_unset_rows_drag_source (GtkTreeView *tree_view)
14233 {
14234   TreeViewDragInfo *di;
14235
14236   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
14237
14238   di = get_info (tree_view);
14239
14240   if (di)
14241     {
14242       if (di->source_set)
14243         {
14244           gtk_drag_source_unset (GTK_WIDGET (tree_view));
14245           di->source_set = FALSE;
14246         }
14247
14248       if (!di->dest_set && !di->source_set)
14249         remove_info (tree_view);
14250     }
14251
14252   unset_reorderable (tree_view);
14253 }
14254
14255 /**
14256  * gtk_tree_view_unset_rows_drag_dest:
14257  * @tree_view: a #GtkTreeView
14258  *
14259  * Undoes the effect of
14260  * gtk_tree_view_enable_model_drag_dest(). Calling this method sets
14261  * #GtkTreeView:reorderable to %FALSE.
14262  **/
14263 void
14264 gtk_tree_view_unset_rows_drag_dest (GtkTreeView *tree_view)
14265 {
14266   TreeViewDragInfo *di;
14267
14268   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
14269
14270   di = get_info (tree_view);
14271
14272   if (di)
14273     {
14274       if (di->dest_set)
14275         {
14276           gtk_drag_dest_unset (GTK_WIDGET (tree_view));
14277           di->dest_set = FALSE;
14278         }
14279
14280       if (!di->dest_set && !di->source_set)
14281         remove_info (tree_view);
14282     }
14283
14284   unset_reorderable (tree_view);
14285 }
14286
14287 /**
14288  * gtk_tree_view_set_drag_dest_row:
14289  * @tree_view: a #GtkTreeView
14290  * @path: (allow-none): The path of the row to highlight, or %NULL
14291  * @pos: Specifies whether to drop before, after or into the row
14292  *
14293  * Sets the row that is highlighted for feedback.
14294  * If @path is %NULL, an existing highlight is removed.
14295  */
14296 void
14297 gtk_tree_view_set_drag_dest_row (GtkTreeView            *tree_view,
14298                                  GtkTreePath            *path,
14299                                  GtkTreeViewDropPosition pos)
14300 {
14301   GtkTreePath *current_dest;
14302
14303   /* Note; this function is exported to allow a custom DND
14304    * implementation, so it can't touch TreeViewDragInfo
14305    */
14306
14307   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
14308
14309   current_dest = NULL;
14310
14311   if (tree_view->priv->drag_dest_row)
14312     {
14313       current_dest = gtk_tree_row_reference_get_path (tree_view->priv->drag_dest_row);
14314       gtk_tree_row_reference_free (tree_view->priv->drag_dest_row);
14315     }
14316
14317   /* special case a drop on an empty model */
14318   tree_view->priv->empty_view_drop = 0;
14319
14320   if (pos == GTK_TREE_VIEW_DROP_BEFORE && path
14321       && gtk_tree_path_get_depth (path) == 1
14322       && gtk_tree_path_get_indices (path)[0] == 0)
14323     {
14324       gint n_children;
14325
14326       n_children = gtk_tree_model_iter_n_children (tree_view->priv->model,
14327                                                    NULL);
14328
14329       if (!n_children)
14330         tree_view->priv->empty_view_drop = 1;
14331     }
14332
14333   tree_view->priv->drag_dest_pos = pos;
14334
14335   if (path)
14336     {
14337       tree_view->priv->drag_dest_row =
14338         gtk_tree_row_reference_new_proxy (G_OBJECT (tree_view), tree_view->priv->model, path);
14339       gtk_tree_view_queue_draw_path (tree_view, path, NULL);
14340     }
14341   else
14342     tree_view->priv->drag_dest_row = NULL;
14343
14344   if (current_dest)
14345     {
14346       GtkRBTree *tree, *new_tree;
14347       GtkRBNode *node, *new_node;
14348
14349       _gtk_tree_view_find_node (tree_view, current_dest, &tree, &node);
14350       _gtk_tree_view_queue_draw_node (tree_view, tree, node, NULL);
14351
14352       if (tree && node)
14353         {
14354           _gtk_rbtree_next_full (tree, node, &new_tree, &new_node);
14355           if (new_tree && new_node)
14356             _gtk_tree_view_queue_draw_node (tree_view, new_tree, new_node, NULL);
14357
14358           _gtk_rbtree_prev_full (tree, node, &new_tree, &new_node);
14359           if (new_tree && new_node)
14360             _gtk_tree_view_queue_draw_node (tree_view, new_tree, new_node, NULL);
14361         }
14362       gtk_tree_path_free (current_dest);
14363     }
14364 }
14365
14366 /**
14367  * gtk_tree_view_get_drag_dest_row:
14368  * @tree_view: a #GtkTreeView
14369  * @path: (out) (allow-none): Return location for the path of the highlighted row, or %NULL.
14370  * @pos: (out) (allow-none): Return location for the drop position, or %NULL
14371  *
14372  * Gets information about the row that is highlighted for feedback.
14373  **/
14374 void
14375 gtk_tree_view_get_drag_dest_row (GtkTreeView              *tree_view,
14376                                  GtkTreePath             **path,
14377                                  GtkTreeViewDropPosition  *pos)
14378 {
14379   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
14380
14381   if (path)
14382     {
14383       if (tree_view->priv->drag_dest_row)
14384         *path = gtk_tree_row_reference_get_path (tree_view->priv->drag_dest_row);
14385       else
14386         {
14387           if (tree_view->priv->empty_view_drop)
14388             *path = gtk_tree_path_new_from_indices (0, -1);
14389           else
14390             *path = NULL;
14391         }
14392     }
14393
14394   if (pos)
14395     *pos = tree_view->priv->drag_dest_pos;
14396 }
14397
14398 /**
14399  * gtk_tree_view_get_dest_row_at_pos:
14400  * @tree_view: a #GtkTreeView
14401  * @drag_x: the position to determine the destination row for
14402  * @drag_y: the position to determine the destination row for
14403  * @path: (out) (allow-none): Return location for the path of the highlighted row, or %NULL.
14404  * @pos: (out) (allow-none): Return location for the drop position, or %NULL
14405  *
14406  * Determines the destination row for a given position.  @drag_x and
14407  * @drag_y are expected to be in widget coordinates.  This function is only
14408  * meaningful if @tree_view is realized.  Therefore this function will always
14409  * return %FALSE if @tree_view is not realized or does not have a model.
14410  *
14411  * Return value: whether there is a row at the given position, %TRUE if this
14412  * is indeed the case.
14413  **/
14414 gboolean
14415 gtk_tree_view_get_dest_row_at_pos (GtkTreeView             *tree_view,
14416                                    gint                     drag_x,
14417                                    gint                     drag_y,
14418                                    GtkTreePath            **path,
14419                                    GtkTreeViewDropPosition *pos)
14420 {
14421   gint cell_y;
14422   gint bin_x, bin_y;
14423   gdouble offset_into_row;
14424   gdouble third;
14425   GdkRectangle cell;
14426   GtkTreeViewColumn *column = NULL;
14427   GtkTreePath *tmp_path = NULL;
14428
14429   /* Note; this function is exported to allow a custom DND
14430    * implementation, so it can't touch TreeViewDragInfo
14431    */
14432
14433   g_return_val_if_fail (tree_view != NULL, FALSE);
14434   g_return_val_if_fail (drag_x >= 0, FALSE);
14435   g_return_val_if_fail (drag_y >= 0, FALSE);
14436
14437   if (path)
14438     *path = NULL;
14439
14440   if (tree_view->priv->bin_window == NULL)
14441     return FALSE;
14442
14443   if (tree_view->priv->tree == NULL)
14444     return FALSE;
14445
14446   /* If in the top third of a row, we drop before that row; if
14447    * in the bottom third, drop after that row; if in the middle,
14448    * and the row has children, drop into the row.
14449    */
14450   gtk_tree_view_convert_widget_to_bin_window_coords (tree_view, drag_x, drag_y,
14451                                                      &bin_x, &bin_y);
14452
14453   if (!gtk_tree_view_get_path_at_pos (tree_view,
14454                                       bin_x,
14455                                       bin_y,
14456                                       &tmp_path,
14457                                       &column,
14458                                       NULL,
14459                                       &cell_y))
14460     return FALSE;
14461
14462   gtk_tree_view_get_background_area (tree_view, tmp_path, column,
14463                                      &cell);
14464
14465   offset_into_row = cell_y;
14466
14467   if (path)
14468     *path = tmp_path;
14469   else
14470     gtk_tree_path_free (tmp_path);
14471
14472   tmp_path = NULL;
14473
14474   third = cell.height / 3.0;
14475
14476   if (pos)
14477     {
14478       if (offset_into_row < third)
14479         {
14480           *pos = GTK_TREE_VIEW_DROP_BEFORE;
14481         }
14482       else if (offset_into_row < (cell.height / 2.0))
14483         {
14484           *pos = GTK_TREE_VIEW_DROP_INTO_OR_BEFORE;
14485         }
14486       else if (offset_into_row < third * 2.0)
14487         {
14488           *pos = GTK_TREE_VIEW_DROP_INTO_OR_AFTER;
14489         }
14490       else
14491         {
14492           *pos = GTK_TREE_VIEW_DROP_AFTER;
14493         }
14494     }
14495
14496   return TRUE;
14497 }
14498
14499
14500
14501 /* KEEP IN SYNC WITH GTK_TREE_VIEW_BIN_EXPOSE */
14502 /**
14503  * gtk_tree_view_create_row_drag_icon:
14504  * @tree_view: a #GtkTreeView
14505  * @path: a #GtkTreePath in @tree_view
14506  *
14507  * Creates a #cairo_surface_t representation of the row at @path.
14508  * This image is used for a drag icon.
14509  *
14510  * Return value: (transfer full): a newly-allocated surface of the drag icon.
14511  **/
14512 cairo_surface_t *
14513 gtk_tree_view_create_row_drag_icon (GtkTreeView  *tree_view,
14514                                     GtkTreePath  *path)
14515 {
14516   GtkTreeIter   iter;
14517   GtkRBTree    *tree;
14518   GtkRBNode    *node;
14519   GtkStyleContext *context;
14520   GtkStateFlags state;
14521   gint cell_offset;
14522   GList *list;
14523   GdkRectangle background_area;
14524   GtkWidget *widget;
14525   gint depth;
14526   /* start drawing inside the black outline */
14527   gint x = 1, y = 1;
14528   cairo_surface_t *surface;
14529   gint bin_window_width;
14530   gboolean is_separator = FALSE;
14531   gboolean rtl, allow_rules;
14532   cairo_t *cr;
14533
14534   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), NULL);
14535   g_return_val_if_fail (path != NULL, NULL);
14536
14537   widget = GTK_WIDGET (tree_view);
14538
14539   if (!gtk_widget_get_realized (widget))
14540     return NULL;
14541
14542   depth = gtk_tree_path_get_depth (path);
14543
14544   _gtk_tree_view_find_node (tree_view,
14545                             path,
14546                             &tree,
14547                             &node);
14548
14549   if (tree == NULL)
14550     return NULL;
14551
14552   if (!gtk_tree_model_get_iter (tree_view->priv->model,
14553                                 &iter,
14554                                 path))
14555     return NULL;
14556
14557   context = gtk_widget_get_style_context (widget);
14558
14559   gtk_style_context_save (context);
14560
14561   state = gtk_widget_get_state_flags (widget);
14562   gtk_style_context_set_state (context, state);
14563
14564   gtk_style_context_add_class (context, GTK_STYLE_CLASS_VIEW);
14565   gtk_style_context_add_region (context, GTK_STYLE_REGION_COLUMN, 0);
14566
14567   gtk_widget_style_get (widget,
14568                         "allow-rules", &allow_rules,
14569                         NULL);
14570
14571   if (allow_rules && tree_view->priv->has_rules)
14572     {
14573       GtkRegionFlags row_flags;
14574
14575       if ((_gtk_rbtree_node_get_index (tree, node) % 2))
14576         row_flags = GTK_REGION_ODD;
14577       else
14578         row_flags = GTK_REGION_EVEN;
14579
14580       gtk_style_context_add_region (context, GTK_STYLE_REGION_ROW, row_flags);
14581     }
14582
14583   is_separator = row_is_separator (tree_view, &iter, NULL);
14584
14585   cell_offset = x;
14586
14587   background_area.y = y;
14588   background_area.height = gtk_tree_view_get_row_height (tree_view, node);
14589
14590   bin_window_width = gdk_window_get_width (tree_view->priv->bin_window);
14591
14592   surface = gdk_window_create_similar_surface (tree_view->priv->bin_window,
14593                                                CAIRO_CONTENT_COLOR,
14594                                                bin_window_width + 2,
14595                                                background_area.height + 2);
14596
14597   cr = cairo_create (surface);
14598
14599   gtk_render_background (context, cr, 0, 0,
14600                          bin_window_width + 2,
14601                          background_area.height + 2);
14602
14603   rtl = gtk_widget_get_direction (GTK_WIDGET (tree_view)) == GTK_TEXT_DIR_RTL;
14604
14605   for (list = (rtl ? g_list_last (tree_view->priv->columns) : g_list_first (tree_view->priv->columns));
14606       list;
14607       list = (rtl ? list->prev : list->next))
14608     {
14609       GtkTreeViewColumn *column = list->data;
14610       GdkRectangle cell_area;
14611       gint vertical_separator;
14612
14613       if (!gtk_tree_view_column_get_visible (column))
14614         continue;
14615
14616       gtk_tree_view_column_cell_set_cell_data (column, tree_view->priv->model, &iter,
14617                                                GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_PARENT),
14618                                                node->children?TRUE:FALSE);
14619
14620       background_area.x = cell_offset;
14621       background_area.width = gtk_tree_view_column_get_width (column);
14622
14623       gtk_widget_style_get (widget,
14624                             "vertical-separator", &vertical_separator,
14625                             NULL);
14626
14627       cell_area = background_area;
14628
14629       cell_area.y += vertical_separator / 2;
14630       cell_area.height -= vertical_separator;
14631
14632       if (gtk_tree_view_is_expander_column (tree_view, column))
14633         {
14634           if (!rtl)
14635             cell_area.x += (depth - 1) * tree_view->priv->level_indentation;
14636           cell_area.width -= (depth - 1) * tree_view->priv->level_indentation;
14637
14638           if (gtk_tree_view_draw_expanders (tree_view))
14639             {
14640               if (!rtl)
14641                 cell_area.x += depth * tree_view->priv->expander_size;
14642               cell_area.width -= depth * tree_view->priv->expander_size;
14643             }
14644         }
14645
14646       if (gtk_tree_view_column_cell_is_visible (column))
14647         {
14648           if (is_separator)
14649             {
14650               gtk_style_context_save (context);
14651               gtk_style_context_add_class (context, GTK_STYLE_CLASS_SEPARATOR);
14652
14653               gtk_render_line (context, cr,
14654                                cell_area.x,
14655                                cell_area.y + cell_area.height / 2,
14656                                cell_area.x + cell_area.width,
14657                                cell_area.y + cell_area.height / 2);
14658
14659               gtk_style_context_restore (context);
14660             }
14661           else
14662             {
14663               _gtk_tree_view_column_cell_render (column,
14664                                                  cr,
14665                                                  &background_area,
14666                                                  &cell_area,
14667                                                  0, FALSE);
14668             }
14669         }
14670       cell_offset += gtk_tree_view_column_get_width (column);
14671     }
14672
14673   cairo_set_source_rgb (cr, 0, 0, 0);
14674   cairo_rectangle (cr,
14675                    0.5, 0.5,
14676                    bin_window_width + 1,
14677                    background_area.height + 1);
14678   cairo_set_line_width (cr, 1.0);
14679   cairo_stroke (cr);
14680
14681   cairo_destroy (cr);
14682
14683   cairo_surface_set_device_offset (surface, 2, 2);
14684
14685   gtk_style_context_restore (context);
14686
14687   return surface;
14688 }
14689
14690
14691 /**
14692  * gtk_tree_view_set_destroy_count_func:
14693  * @tree_view: A #GtkTreeView
14694  * @func: (allow-none): Function to be called when a view row is destroyed, or %NULL
14695  * @data: (allow-none): User data to be passed to @func, or %NULL
14696  * @destroy: (allow-none): Destroy notifier for @data, or %NULL
14697  *
14698  * This function should almost never be used.  It is meant for private use by
14699  * ATK for determining the number of visible children that are removed when the
14700  * user collapses a row, or a row is deleted.
14701  *
14702  * Deprecated: 3.4: Accessibility does not need the function anymore.
14703  **/
14704 void
14705 gtk_tree_view_set_destroy_count_func (GtkTreeView             *tree_view,
14706                                       GtkTreeDestroyCountFunc  func,
14707                                       gpointer                 data,
14708                                       GDestroyNotify           destroy)
14709 {
14710   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
14711
14712   if (tree_view->priv->destroy_count_destroy)
14713     tree_view->priv->destroy_count_destroy (tree_view->priv->destroy_count_data);
14714
14715   tree_view->priv->destroy_count_func = func;
14716   tree_view->priv->destroy_count_data = data;
14717   tree_view->priv->destroy_count_destroy = destroy;
14718 }
14719
14720
14721 /*
14722  * Interactive search
14723  */
14724
14725 /**
14726  * gtk_tree_view_set_enable_search:
14727  * @tree_view: A #GtkTreeView
14728  * @enable_search: %TRUE, if the user can search interactively
14729  *
14730  * If @enable_search is set, then the user can type in text to search through
14731  * the tree interactively (this is sometimes called "typeahead find").
14732  *
14733  * Note that even if this is %FALSE, the user can still initiate a search
14734  * using the "start-interactive-search" key binding.
14735  */
14736 void
14737 gtk_tree_view_set_enable_search (GtkTreeView *tree_view,
14738                                  gboolean     enable_search)
14739 {
14740   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
14741
14742   enable_search = !!enable_search;
14743
14744   if (tree_view->priv->enable_search != enable_search)
14745     {
14746        tree_view->priv->enable_search = enable_search;
14747        g_object_notify (G_OBJECT (tree_view), "enable-search");
14748     }
14749 }
14750
14751 /**
14752  * gtk_tree_view_get_enable_search:
14753  * @tree_view: A #GtkTreeView
14754  *
14755  * Returns whether or not the tree allows to start interactive searching
14756  * by typing in text.
14757  *
14758  * Return value: whether or not to let the user search interactively
14759  */
14760 gboolean
14761 gtk_tree_view_get_enable_search (GtkTreeView *tree_view)
14762 {
14763   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), FALSE);
14764
14765   return tree_view->priv->enable_search;
14766 }
14767
14768
14769 /**
14770  * gtk_tree_view_get_search_column:
14771  * @tree_view: A #GtkTreeView
14772  *
14773  * Gets the column searched on by the interactive search code.
14774  *
14775  * Return value: the column the interactive search code searches in.
14776  */
14777 gint
14778 gtk_tree_view_get_search_column (GtkTreeView *tree_view)
14779 {
14780   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), -1);
14781
14782   return (tree_view->priv->search_column);
14783 }
14784
14785 /**
14786  * gtk_tree_view_set_search_column:
14787  * @tree_view: A #GtkTreeView
14788  * @column: the column of the model to search in, or -1 to disable searching
14789  *
14790  * Sets @column as the column where the interactive search code should
14791  * search in for the current model.
14792  *
14793  * If the search column is set, users can use the "start-interactive-search"
14794  * key binding to bring up search popup. The enable-search property controls
14795  * whether simply typing text will also start an interactive search.
14796  *
14797  * Note that @column refers to a column of the current model. The search
14798  * column is reset to -1 when the model is changed.
14799  */
14800 void
14801 gtk_tree_view_set_search_column (GtkTreeView *tree_view,
14802                                  gint         column)
14803 {
14804   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
14805   g_return_if_fail (column >= -1);
14806
14807   if (tree_view->priv->search_column == column)
14808     return;
14809
14810   tree_view->priv->search_column = column;
14811   g_object_notify (G_OBJECT (tree_view), "search-column");
14812 }
14813
14814 /**
14815  * gtk_tree_view_get_search_equal_func: (skip)
14816  * @tree_view: A #GtkTreeView
14817  *
14818  * Returns the compare function currently in use.
14819  *
14820  * Return value: the currently used compare function for the search code.
14821  */
14822
14823 GtkTreeViewSearchEqualFunc
14824 gtk_tree_view_get_search_equal_func (GtkTreeView *tree_view)
14825 {
14826   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), NULL);
14827
14828   return tree_view->priv->search_equal_func;
14829 }
14830
14831 /**
14832  * gtk_tree_view_set_search_equal_func:
14833  * @tree_view: A #GtkTreeView
14834  * @search_equal_func: the compare function to use during the search
14835  * @search_user_data: (allow-none): user data to pass to @search_equal_func, or %NULL
14836  * @search_destroy: (allow-none): Destroy notifier for @search_user_data, or %NULL
14837  *
14838  * Sets the compare function for the interactive search capabilities; note
14839  * that somewhat like strcmp() returning 0 for equality
14840  * #GtkTreeViewSearchEqualFunc returns %FALSE on matches.
14841  **/
14842 void
14843 gtk_tree_view_set_search_equal_func (GtkTreeView                *tree_view,
14844                                      GtkTreeViewSearchEqualFunc  search_equal_func,
14845                                      gpointer                    search_user_data,
14846                                      GDestroyNotify              search_destroy)
14847 {
14848   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
14849   g_return_if_fail (search_equal_func != NULL);
14850
14851   if (tree_view->priv->search_destroy)
14852     tree_view->priv->search_destroy (tree_view->priv->search_user_data);
14853
14854   tree_view->priv->search_equal_func = search_equal_func;
14855   tree_view->priv->search_user_data = search_user_data;
14856   tree_view->priv->search_destroy = search_destroy;
14857   if (tree_view->priv->search_equal_func == NULL)
14858     tree_view->priv->search_equal_func = gtk_tree_view_search_equal_func;
14859 }
14860
14861 /**
14862  * gtk_tree_view_get_search_entry:
14863  * @tree_view: A #GtkTreeView
14864  *
14865  * Returns the #GtkEntry which is currently in use as interactive search
14866  * entry for @tree_view.  In case the built-in entry is being used, %NULL
14867  * will be returned.
14868  *
14869  * Return value: (transfer none): the entry currently in use as search entry.
14870  *
14871  * Since: 2.10
14872  */
14873 GtkEntry *
14874 gtk_tree_view_get_search_entry (GtkTreeView *tree_view)
14875 {
14876   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), NULL);
14877
14878   if (tree_view->priv->search_custom_entry_set)
14879     return GTK_ENTRY (tree_view->priv->search_entry);
14880
14881   return NULL;
14882 }
14883
14884 /**
14885  * gtk_tree_view_set_search_entry:
14886  * @tree_view: A #GtkTreeView
14887  * @entry: (allow-none): the entry the interactive search code of @tree_view should use or %NULL
14888  *
14889  * Sets the entry which the interactive search code will use for this
14890  * @tree_view.  This is useful when you want to provide a search entry
14891  * in our interface at all time at a fixed position.  Passing %NULL for
14892  * @entry will make the interactive search code use the built-in popup
14893  * entry again.
14894  *
14895  * Since: 2.10
14896  */
14897 void
14898 gtk_tree_view_set_search_entry (GtkTreeView *tree_view,
14899                                 GtkEntry    *entry)
14900 {
14901   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
14902   g_return_if_fail (entry == NULL || GTK_IS_ENTRY (entry));
14903
14904   if (tree_view->priv->search_custom_entry_set)
14905     {
14906       if (tree_view->priv->search_entry_changed_id)
14907         {
14908           g_signal_handler_disconnect (tree_view->priv->search_entry,
14909                                        tree_view->priv->search_entry_changed_id);
14910           tree_view->priv->search_entry_changed_id = 0;
14911         }
14912       g_signal_handlers_disconnect_by_func (tree_view->priv->search_entry,
14913                                             G_CALLBACK (gtk_tree_view_search_key_press_event),
14914                                             tree_view);
14915
14916       g_object_unref (tree_view->priv->search_entry);
14917     }
14918   else if (tree_view->priv->search_window)
14919     {
14920       gtk_widget_destroy (tree_view->priv->search_window);
14921
14922       tree_view->priv->search_window = NULL;
14923     }
14924
14925   if (entry)
14926     {
14927       tree_view->priv->search_entry = g_object_ref (entry);
14928       tree_view->priv->search_custom_entry_set = TRUE;
14929
14930       if (tree_view->priv->search_entry_changed_id == 0)
14931         {
14932           tree_view->priv->search_entry_changed_id =
14933             g_signal_connect (tree_view->priv->search_entry, "changed",
14934                               G_CALLBACK (gtk_tree_view_search_init),
14935                               tree_view);
14936         }
14937
14938         g_signal_connect (tree_view->priv->search_entry, "key-press-event",
14939                           G_CALLBACK (gtk_tree_view_search_key_press_event),
14940                           tree_view);
14941
14942         gtk_tree_view_search_init (tree_view->priv->search_entry, tree_view);
14943     }
14944   else
14945     {
14946       tree_view->priv->search_entry = NULL;
14947       tree_view->priv->search_custom_entry_set = FALSE;
14948     }
14949 }
14950
14951 /**
14952  * gtk_tree_view_set_search_position_func:
14953  * @tree_view: A #GtkTreeView
14954  * @func: (allow-none): the function to use to position the search dialog, or %NULL
14955  *    to use the default search position function
14956  * @data: (allow-none): user data to pass to @func, or %NULL
14957  * @destroy: (allow-none): Destroy notifier for @data, or %NULL
14958  *
14959  * Sets the function to use when positioning the search dialog.
14960  *
14961  * Since: 2.10
14962  **/
14963 void
14964 gtk_tree_view_set_search_position_func (GtkTreeView                   *tree_view,
14965                                         GtkTreeViewSearchPositionFunc  func,
14966                                         gpointer                       user_data,
14967                                         GDestroyNotify                 destroy)
14968 {
14969   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
14970
14971   if (tree_view->priv->search_position_destroy)
14972     tree_view->priv->search_position_destroy (tree_view->priv->search_position_user_data);
14973
14974   tree_view->priv->search_position_func = func;
14975   tree_view->priv->search_position_user_data = user_data;
14976   tree_view->priv->search_position_destroy = destroy;
14977   if (tree_view->priv->search_position_func == NULL)
14978     tree_view->priv->search_position_func = gtk_tree_view_search_position_func;
14979 }
14980
14981 /**
14982  * gtk_tree_view_get_search_position_func: (skip)
14983  * @tree_view: A #GtkTreeView
14984  *
14985  * Returns the positioning function currently in use.
14986  *
14987  * Return value: the currently used function for positioning the search dialog.
14988  *
14989  * Since: 2.10
14990  */
14991 GtkTreeViewSearchPositionFunc
14992 gtk_tree_view_get_search_position_func (GtkTreeView *tree_view)
14993 {
14994   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), NULL);
14995
14996   return tree_view->priv->search_position_func;
14997 }
14998
14999
15000 static void
15001 gtk_tree_view_search_dialog_hide (GtkWidget   *search_dialog,
15002                                   GtkTreeView *tree_view,
15003                                   GdkDevice   *device)
15004 {
15005   if (tree_view->priv->disable_popdown)
15006     return;
15007
15008   if (tree_view->priv->search_entry_changed_id)
15009     {
15010       g_signal_handler_disconnect (tree_view->priv->search_entry,
15011                                    tree_view->priv->search_entry_changed_id);
15012       tree_view->priv->search_entry_changed_id = 0;
15013     }
15014   if (tree_view->priv->typeselect_flush_timeout)
15015     {
15016       g_source_remove (tree_view->priv->typeselect_flush_timeout);
15017       tree_view->priv->typeselect_flush_timeout = 0;
15018     }
15019
15020   if (gtk_widget_get_visible (search_dialog))
15021     {
15022       /* send focus-in event */
15023       send_focus_change (GTK_WIDGET (tree_view->priv->search_entry), device, FALSE);
15024       gtk_widget_hide (search_dialog);
15025       gtk_entry_set_text (GTK_ENTRY (tree_view->priv->search_entry), "");
15026       send_focus_change (GTK_WIDGET (tree_view), device, TRUE);
15027     }
15028 }
15029
15030 static void
15031 gtk_tree_view_search_position_func (GtkTreeView *tree_view,
15032                                     GtkWidget   *search_dialog,
15033                                     gpointer     user_data)
15034 {
15035   gint x, y;
15036   gint tree_x, tree_y;
15037   gint tree_width, tree_height;
15038   GdkWindow *tree_window = gtk_widget_get_window (GTK_WIDGET (tree_view));
15039   GdkScreen *screen = gdk_window_get_screen (tree_window);
15040   GtkRequisition requisition;
15041   gint monitor_num;
15042   GdkRectangle monitor;
15043
15044   monitor_num = gdk_screen_get_monitor_at_window (screen, tree_window);
15045   gdk_screen_get_monitor_geometry (screen, monitor_num, &monitor);
15046
15047   gtk_widget_realize (search_dialog);
15048
15049   gdk_window_get_origin (tree_window, &tree_x, &tree_y);
15050   tree_width = gdk_window_get_width (tree_window);
15051   tree_height = gdk_window_get_height (tree_window);
15052   gtk_widget_get_preferred_size (search_dialog, &requisition, NULL);
15053
15054   if (tree_x + tree_width > gdk_screen_get_width (screen))
15055     x = gdk_screen_get_width (screen) - requisition.width;
15056   else if (tree_x + tree_width - requisition.width < 0)
15057     x = 0;
15058   else
15059     x = tree_x + tree_width - requisition.width;
15060
15061   if (tree_y + tree_height + requisition.height > gdk_screen_get_height (screen))
15062     y = gdk_screen_get_height (screen) - requisition.height;
15063   else if (tree_y + tree_height < 0) /* isn't really possible ... */
15064     y = 0;
15065   else
15066     y = tree_y + tree_height;
15067
15068   gtk_window_move (GTK_WINDOW (search_dialog), x, y);
15069 }
15070
15071 static void
15072 gtk_tree_view_search_disable_popdown (GtkEntry *entry,
15073                                       GtkMenu  *menu,
15074                                       gpointer  data)
15075 {
15076   GtkTreeView *tree_view = (GtkTreeView *)data;
15077
15078   tree_view->priv->disable_popdown = 1;
15079   g_signal_connect (menu, "hide",
15080                     G_CALLBACK (gtk_tree_view_search_enable_popdown), data);
15081 }
15082
15083 /* Because we're visible but offscreen, we just set a flag in the preedit
15084  * callback.
15085  */
15086 static void
15087 gtk_tree_view_search_preedit_changed (GtkIMContext *im_context,
15088                                       GtkTreeView  *tree_view)
15089 {
15090   tree_view->priv->imcontext_changed = 1;
15091   if (tree_view->priv->typeselect_flush_timeout)
15092     {
15093       g_source_remove (tree_view->priv->typeselect_flush_timeout);
15094       tree_view->priv->typeselect_flush_timeout =
15095         gdk_threads_add_timeout (GTK_TREE_VIEW_SEARCH_DIALOG_TIMEOUT,
15096                        (GSourceFunc) gtk_tree_view_search_entry_flush_timeout,
15097                        tree_view);
15098     }
15099
15100 }
15101
15102 static void
15103 gtk_tree_view_search_activate (GtkEntry    *entry,
15104                                GtkTreeView *tree_view)
15105 {
15106   GtkTreePath *path;
15107
15108   gtk_tree_view_search_dialog_hide (tree_view->priv->search_window,
15109                                     tree_view,
15110                                     gtk_get_current_event_device ());
15111
15112   /* If we have a row selected and it's the cursor row, we activate
15113    * the row XXX */
15114   if (tree_view->priv->cursor_node &&
15115       GTK_RBNODE_FLAG_SET (tree_view->priv->cursor_node, GTK_RBNODE_IS_SELECTED))
15116     {
15117       path = _gtk_tree_path_new_from_rbtree (tree_view->priv->cursor_tree,
15118                                              tree_view->priv->cursor_node);
15119
15120       gtk_tree_view_row_activated (tree_view, path, tree_view->priv->focus_column);
15121
15122       gtk_tree_path_free (path);
15123     }
15124 }
15125
15126 static gboolean
15127 gtk_tree_view_real_search_enable_popdown (gpointer data)
15128 {
15129   GtkTreeView *tree_view = (GtkTreeView *)data;
15130
15131   tree_view->priv->disable_popdown = 0;
15132
15133   return FALSE;
15134 }
15135
15136 static void
15137 gtk_tree_view_search_enable_popdown (GtkWidget *widget,
15138                                      gpointer   data)
15139 {
15140   gdk_threads_add_timeout_full (G_PRIORITY_HIGH, 200, gtk_tree_view_real_search_enable_popdown, g_object_ref (data), g_object_unref);
15141 }
15142
15143 static gboolean
15144 gtk_tree_view_search_delete_event (GtkWidget *widget,
15145                                    GdkEventAny *event,
15146                                    GtkTreeView *tree_view)
15147 {
15148   g_return_val_if_fail (GTK_IS_WIDGET (widget), FALSE);
15149
15150   gtk_tree_view_search_dialog_hide (widget, tree_view, NULL);
15151
15152   return TRUE;
15153 }
15154
15155 static gboolean
15156 gtk_tree_view_search_button_press_event (GtkWidget *widget,
15157                                          GdkEventButton *event,
15158                                          GtkTreeView *tree_view)
15159 {
15160   GdkDevice *keyb_device;
15161
15162   g_return_val_if_fail (GTK_IS_WIDGET (widget), FALSE);
15163
15164   keyb_device = gdk_device_get_associated_device (event->device);
15165   gtk_tree_view_search_dialog_hide (widget, tree_view, keyb_device);
15166
15167   if (event->window == tree_view->priv->bin_window)
15168     gtk_tree_view_button_press (GTK_WIDGET (tree_view), event);
15169
15170   return TRUE;
15171 }
15172
15173 static gboolean
15174 gtk_tree_view_search_scroll_event (GtkWidget *widget,
15175                                    GdkEventScroll *event,
15176                                    GtkTreeView *tree_view)
15177 {
15178   gboolean retval = FALSE;
15179
15180   if (event->direction == GDK_SCROLL_UP)
15181     {
15182       gtk_tree_view_search_move (widget, tree_view, TRUE);
15183       retval = TRUE;
15184     }
15185   else if (event->direction == GDK_SCROLL_DOWN)
15186     {
15187       gtk_tree_view_search_move (widget, tree_view, FALSE);
15188       retval = TRUE;
15189     }
15190
15191   /* renew the flush timeout */
15192   if (retval && tree_view->priv->typeselect_flush_timeout
15193       && !tree_view->priv->search_custom_entry_set)
15194     {
15195       g_source_remove (tree_view->priv->typeselect_flush_timeout);
15196       tree_view->priv->typeselect_flush_timeout =
15197         gdk_threads_add_timeout (GTK_TREE_VIEW_SEARCH_DIALOG_TIMEOUT,
15198                        (GSourceFunc) gtk_tree_view_search_entry_flush_timeout,
15199                        tree_view);
15200     }
15201
15202   return retval;
15203 }
15204
15205 static gboolean
15206 gtk_tree_view_search_key_press_event (GtkWidget *widget,
15207                                       GdkEventKey *event,
15208                                       GtkTreeView *tree_view)
15209 {
15210   GdkModifierType default_accel;
15211   gboolean        retval = FALSE;
15212
15213   g_return_val_if_fail (GTK_IS_WIDGET (widget), FALSE);
15214   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), FALSE);
15215
15216   /* close window and cancel the search */
15217   if (!tree_view->priv->search_custom_entry_set
15218       && (event->keyval == GDK_KEY_Escape ||
15219           event->keyval == GDK_KEY_Tab ||
15220             event->keyval == GDK_KEY_KP_Tab ||
15221             event->keyval == GDK_KEY_ISO_Left_Tab))
15222     {
15223       gtk_tree_view_search_dialog_hide (widget, tree_view,
15224                                         gdk_event_get_device ((GdkEvent *) event));
15225       return TRUE;
15226     }
15227
15228   default_accel = gtk_widget_get_modifier_mask (widget,
15229                                                 GDK_MODIFIER_INTENT_PRIMARY_ACCELERATOR);
15230
15231   /* select previous matching iter */
15232   if (event->keyval == GDK_KEY_Up || event->keyval == GDK_KEY_KP_Up)
15233     {
15234       if (!gtk_tree_view_search_move (widget, tree_view, TRUE))
15235         gtk_widget_error_bell (widget);
15236
15237       retval = TRUE;
15238     }
15239
15240   if (((event->state & (default_accel | GDK_SHIFT_MASK)) == (default_accel | GDK_SHIFT_MASK))
15241       && (event->keyval == GDK_KEY_g || event->keyval == GDK_KEY_G))
15242     {
15243       if (!gtk_tree_view_search_move (widget, tree_view, TRUE))
15244         gtk_widget_error_bell (widget);
15245
15246       retval = TRUE;
15247     }
15248
15249   /* select next matching iter */
15250   if (event->keyval == GDK_KEY_Down || event->keyval == GDK_KEY_KP_Down)
15251     {
15252       if (!gtk_tree_view_search_move (widget, tree_view, FALSE))
15253         gtk_widget_error_bell (widget);
15254
15255       retval = TRUE;
15256     }
15257
15258   if (((event->state & (default_accel | GDK_SHIFT_MASK)) == default_accel)
15259       && (event->keyval == GDK_KEY_g || event->keyval == GDK_KEY_G))
15260     {
15261       if (!gtk_tree_view_search_move (widget, tree_view, FALSE))
15262         gtk_widget_error_bell (widget);
15263
15264       retval = TRUE;
15265     }
15266
15267   /* renew the flush timeout */
15268   if (retval && tree_view->priv->typeselect_flush_timeout
15269       && !tree_view->priv->search_custom_entry_set)
15270     {
15271       g_source_remove (tree_view->priv->typeselect_flush_timeout);
15272       tree_view->priv->typeselect_flush_timeout =
15273         gdk_threads_add_timeout (GTK_TREE_VIEW_SEARCH_DIALOG_TIMEOUT,
15274                        (GSourceFunc) gtk_tree_view_search_entry_flush_timeout,
15275                        tree_view);
15276     }
15277
15278   return retval;
15279 }
15280
15281 /*  this function returns FALSE if there is a search string but
15282  *  nothing was found, and TRUE otherwise.
15283  */
15284 static gboolean
15285 gtk_tree_view_search_move (GtkWidget   *window,
15286                            GtkTreeView *tree_view,
15287                            gboolean     up)
15288 {
15289   gboolean ret;
15290   gint len;
15291   gint count = 0;
15292   const gchar *text;
15293   GtkTreeIter iter;
15294   GtkTreeModel *model;
15295   GtkTreeSelection *selection;
15296
15297   text = gtk_entry_get_text (GTK_ENTRY (tree_view->priv->search_entry));
15298
15299   g_return_val_if_fail (text != NULL, FALSE);
15300
15301   len = strlen (text);
15302
15303   if (up && tree_view->priv->selected_iter == 1)
15304     return strlen (text) < 1;
15305
15306   len = strlen (text);
15307
15308   if (len < 1)
15309     return TRUE;
15310
15311   model = gtk_tree_view_get_model (tree_view);
15312   selection = gtk_tree_view_get_selection (tree_view);
15313
15314   /* search */
15315   gtk_tree_selection_unselect_all (selection);
15316   if (!gtk_tree_model_get_iter_first (model, &iter))
15317     return TRUE;
15318
15319   ret = gtk_tree_view_search_iter (model, selection, &iter, text,
15320                                    &count, up?((tree_view->priv->selected_iter) - 1):((tree_view->priv->selected_iter + 1)));
15321
15322   if (ret)
15323     {
15324       /* found */
15325       tree_view->priv->selected_iter += up?(-1):(1);
15326       return TRUE;
15327     }
15328   else
15329     {
15330       /* return to old iter */
15331       count = 0;
15332       gtk_tree_model_get_iter_first (model, &iter);
15333       gtk_tree_view_search_iter (model, selection,
15334                                  &iter, text,
15335                                  &count, tree_view->priv->selected_iter);
15336       return FALSE;
15337     }
15338 }
15339
15340 static gboolean
15341 gtk_tree_view_search_equal_func (GtkTreeModel *model,
15342                                  gint          column,
15343                                  const gchar  *key,
15344                                  GtkTreeIter  *iter,
15345                                  gpointer      search_data)
15346 {
15347   gboolean retval = TRUE;
15348   const gchar *str;
15349   gchar *normalized_string;
15350   gchar *normalized_key;
15351   gchar *case_normalized_string = NULL;
15352   gchar *case_normalized_key = NULL;
15353   GValue value = G_VALUE_INIT;
15354   GValue transformed = G_VALUE_INIT;
15355
15356   gtk_tree_model_get_value (model, iter, column, &value);
15357
15358   g_value_init (&transformed, G_TYPE_STRING);
15359
15360   if (!g_value_transform (&value, &transformed))
15361     {
15362       g_value_unset (&value);
15363       return TRUE;
15364     }
15365
15366   g_value_unset (&value);
15367
15368   str = g_value_get_string (&transformed);
15369   if (!str)
15370     {
15371       g_value_unset (&transformed);
15372       return TRUE;
15373     }
15374
15375   normalized_string = g_utf8_normalize (str, -1, G_NORMALIZE_ALL);
15376   normalized_key = g_utf8_normalize (key, -1, G_NORMALIZE_ALL);
15377
15378   if (normalized_string && normalized_key)
15379     {
15380       case_normalized_string = g_utf8_casefold (normalized_string, -1);
15381       case_normalized_key = g_utf8_casefold (normalized_key, -1);
15382
15383       if (strncmp (case_normalized_key, case_normalized_string, strlen (case_normalized_key)) == 0)
15384         retval = FALSE;
15385     }
15386
15387   g_value_unset (&transformed);
15388   g_free (normalized_key);
15389   g_free (normalized_string);
15390   g_free (case_normalized_key);
15391   g_free (case_normalized_string);
15392
15393   return retval;
15394 }
15395
15396 static gboolean
15397 gtk_tree_view_search_iter (GtkTreeModel     *model,
15398                            GtkTreeSelection *selection,
15399                            GtkTreeIter      *iter,
15400                            const gchar      *text,
15401                            gint             *count,
15402                            gint              n)
15403 {
15404   GtkRBTree *tree = NULL;
15405   GtkRBNode *node = NULL;
15406   GtkTreePath *path;
15407
15408   GtkTreeView *tree_view = gtk_tree_selection_get_tree_view (selection);
15409
15410   path = gtk_tree_model_get_path (model, iter);
15411   _gtk_tree_view_find_node (tree_view, path, &tree, &node);
15412
15413   do
15414     {
15415       if (! tree_view->priv->search_equal_func (model, tree_view->priv->search_column, text, iter, tree_view->priv->search_user_data))
15416         {
15417           (*count)++;
15418           if (*count == n)
15419             {
15420               gtk_tree_view_scroll_to_cell (tree_view, path, NULL,
15421                                             TRUE, 0.5, 0.0);
15422               gtk_tree_selection_select_iter (selection, iter);
15423               gtk_tree_view_real_set_cursor (tree_view, path, CLAMP_NODE);
15424
15425               if (path)
15426                 gtk_tree_path_free (path);
15427
15428               return TRUE;
15429             }
15430         }
15431
15432       if (node->children)
15433         {
15434           gboolean has_child;
15435           GtkTreeIter tmp;
15436
15437           tree = node->children;
15438           node = _gtk_rbtree_first (tree);
15439
15440           tmp = *iter;
15441           has_child = gtk_tree_model_iter_children (model, iter, &tmp);
15442           gtk_tree_path_down (path);
15443
15444           /* sanity check */
15445           TREE_VIEW_INTERNAL_ASSERT (has_child, FALSE);
15446         }
15447       else
15448         {
15449           gboolean done = FALSE;
15450
15451           do
15452             {
15453               node = _gtk_rbtree_next (tree, node);
15454
15455               if (node)
15456                 {
15457                   gboolean has_next;
15458
15459                   has_next = gtk_tree_model_iter_next (model, iter);
15460
15461                   done = TRUE;
15462                   gtk_tree_path_next (path);
15463
15464                   /* sanity check */
15465                   TREE_VIEW_INTERNAL_ASSERT (has_next, FALSE);
15466                 }
15467               else
15468                 {
15469                   gboolean has_parent;
15470                   GtkTreeIter tmp_iter = *iter;
15471
15472                   node = tree->parent_node;
15473                   tree = tree->parent_tree;
15474
15475                   if (!tree)
15476                     {
15477                       if (path)
15478                         gtk_tree_path_free (path);
15479
15480                       /* we've run out of tree, done with this func */
15481                       return FALSE;
15482                     }
15483
15484                   has_parent = gtk_tree_model_iter_parent (model,
15485                                                            iter,
15486                                                            &tmp_iter);
15487                   gtk_tree_path_up (path);
15488
15489                   /* sanity check */
15490                   TREE_VIEW_INTERNAL_ASSERT (has_parent, FALSE);
15491                 }
15492             }
15493           while (!done);
15494         }
15495     }
15496   while (1);
15497
15498   return FALSE;
15499 }
15500
15501 static void
15502 gtk_tree_view_search_init (GtkWidget   *entry,
15503                            GtkTreeView *tree_view)
15504 {
15505   gint ret;
15506   gint count = 0;
15507   const gchar *text;
15508   GtkTreeIter iter;
15509   GtkTreeModel *model;
15510   GtkTreeSelection *selection;
15511
15512   g_return_if_fail (GTK_IS_ENTRY (entry));
15513   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
15514
15515   text = gtk_entry_get_text (GTK_ENTRY (entry));
15516
15517   model = gtk_tree_view_get_model (tree_view);
15518   selection = gtk_tree_view_get_selection (tree_view);
15519
15520   /* search */
15521   gtk_tree_selection_unselect_all (selection);
15522   if (tree_view->priv->typeselect_flush_timeout
15523       && !tree_view->priv->search_custom_entry_set)
15524     {
15525       g_source_remove (tree_view->priv->typeselect_flush_timeout);
15526       tree_view->priv->typeselect_flush_timeout =
15527         gdk_threads_add_timeout (GTK_TREE_VIEW_SEARCH_DIALOG_TIMEOUT,
15528                        (GSourceFunc) gtk_tree_view_search_entry_flush_timeout,
15529                        tree_view);
15530     }
15531
15532   if (*text == '\0')
15533     return;
15534
15535   if (!gtk_tree_model_get_iter_first (model, &iter))
15536     return;
15537
15538   ret = gtk_tree_view_search_iter (model, selection,
15539                                    &iter, text,
15540                                    &count, 1);
15541
15542   if (ret)
15543     tree_view->priv->selected_iter = 1;
15544 }
15545
15546 void
15547 _gtk_tree_view_remove_editable (GtkTreeView       *tree_view,
15548                                 GtkTreeViewColumn *column,
15549                                 GtkCellEditable   *cell_editable)
15550 {
15551   if (tree_view->priv->edited_column == NULL)
15552     return;
15553
15554   g_return_if_fail (column == tree_view->priv->edited_column);
15555
15556   tree_view->priv->edited_column = NULL;
15557
15558   if (gtk_widget_has_focus (GTK_WIDGET (cell_editable)))
15559     gtk_widget_grab_focus (GTK_WIDGET (tree_view));
15560
15561   gtk_container_remove (GTK_CONTAINER (tree_view),
15562                         GTK_WIDGET (cell_editable));
15563
15564   /* FIXME should only redraw a single node */
15565   gtk_widget_queue_draw (GTK_WIDGET (tree_view));
15566 }
15567
15568 static gboolean
15569 gtk_tree_view_start_editing (GtkTreeView *tree_view,
15570                              GtkTreePath *cursor_path,
15571                              gboolean     edit_only)
15572 {
15573   GtkTreeIter iter;
15574   GdkRectangle cell_area;
15575   GtkTreeViewColumn *focus_column;
15576   guint flags = 0; /* can be 0, as the flags are primarily for rendering */
15577   gint retval = FALSE;
15578   GtkRBTree *cursor_tree;
15579   GtkRBNode *cursor_node;
15580
15581   g_assert (tree_view->priv->focus_column);
15582   focus_column = tree_view->priv->focus_column;
15583
15584   if (!gtk_widget_get_realized (GTK_WIDGET (tree_view)))
15585     return FALSE;
15586
15587   if (_gtk_tree_view_find_node (tree_view, cursor_path, &cursor_tree, &cursor_node) ||
15588       cursor_node == NULL)
15589     return FALSE;
15590
15591   gtk_tree_model_get_iter (tree_view->priv->model, &iter, cursor_path);
15592
15593   validate_row (tree_view, cursor_tree, cursor_node, &iter, cursor_path);
15594
15595   gtk_tree_view_column_cell_set_cell_data (focus_column,
15596                                            tree_view->priv->model,
15597                                            &iter,
15598                                            GTK_RBNODE_FLAG_SET (cursor_node, GTK_RBNODE_IS_PARENT),
15599                                            cursor_node->children ? TRUE : FALSE);
15600   gtk_tree_view_get_cell_area (tree_view,
15601                                cursor_path,
15602                                focus_column,
15603                                &cell_area);
15604
15605   if (gtk_cell_area_activate (gtk_cell_layout_get_area (GTK_CELL_LAYOUT (focus_column)),
15606                               _gtk_tree_view_column_get_context (focus_column),
15607                               GTK_WIDGET (tree_view),
15608                               &cell_area,
15609                               flags, edit_only))
15610     retval = TRUE;
15611
15612   return retval;
15613 }
15614
15615 void
15616 _gtk_tree_view_add_editable (GtkTreeView       *tree_view,
15617                              GtkTreeViewColumn *column,
15618                              GtkTreePath       *path,
15619                              GtkCellEditable   *cell_editable,
15620                              GdkRectangle      *cell_area)
15621 {
15622   gint pre_val = gtk_adjustment_get_value (tree_view->priv->vadjustment);
15623   GtkRequisition requisition;
15624
15625   tree_view->priv->edited_column = column;
15626
15627   gtk_tree_view_real_set_cursor (tree_view, path, CLAMP_NODE);
15628   cell_area->y += pre_val - (int)gtk_adjustment_get_value (tree_view->priv->vadjustment);
15629
15630   gtk_widget_get_preferred_size (GTK_WIDGET (cell_editable),
15631                                  &requisition, NULL);
15632
15633   tree_view->priv->draw_keyfocus = TRUE;
15634
15635   if (requisition.height < cell_area->height)
15636     {
15637       gint diff = cell_area->height - requisition.height;
15638       gtk_tree_view_put (tree_view,
15639                          GTK_WIDGET (cell_editable),
15640                          cell_area->x, cell_area->y + diff/2,
15641                          cell_area->width, requisition.height);
15642     }
15643   else
15644     {
15645       gtk_tree_view_put (tree_view,
15646                          GTK_WIDGET (cell_editable),
15647                          cell_area->x, cell_area->y,
15648                          cell_area->width, cell_area->height);
15649     }
15650 }
15651
15652 static void
15653 gtk_tree_view_stop_editing (GtkTreeView *tree_view,
15654                             gboolean     cancel_editing)
15655 {
15656   GtkTreeViewColumn *column;
15657
15658   if (tree_view->priv->edited_column == NULL)
15659     return;
15660
15661   /*
15662    * This is very evil. We need to do this, because
15663    * gtk_cell_editable_editing_done may trigger gtk_tree_view_row_changed
15664    * later on. If gtk_tree_view_row_changed notices
15665    * tree_view->priv->edited_column != NULL, it'll call
15666    * gtk_tree_view_stop_editing again. Bad things will happen then.
15667    *
15668    * Please read that again if you intend to modify anything here.
15669    */
15670
15671   column = tree_view->priv->edited_column;
15672   gtk_cell_area_stop_editing (gtk_cell_layout_get_area (GTK_CELL_LAYOUT (column)), cancel_editing);
15673   tree_view->priv->edited_column = NULL;
15674 }
15675
15676
15677 /**
15678  * gtk_tree_view_set_hover_selection:
15679  * @tree_view: a #GtkTreeView
15680  * @hover: %TRUE to enable hover selection mode
15681  *
15682  * Enables or disables the hover selection mode of @tree_view.
15683  * Hover selection makes the selected row follow the pointer.
15684  * Currently, this works only for the selection modes
15685  * %GTK_SELECTION_SINGLE and %GTK_SELECTION_BROWSE.
15686  *
15687  * Since: 2.6
15688  **/
15689 void
15690 gtk_tree_view_set_hover_selection (GtkTreeView *tree_view,
15691                                    gboolean     hover)
15692 {
15693   hover = hover != FALSE;
15694
15695   if (hover != tree_view->priv->hover_selection)
15696     {
15697       tree_view->priv->hover_selection = hover;
15698
15699       g_object_notify (G_OBJECT (tree_view), "hover-selection");
15700     }
15701 }
15702
15703 /**
15704  * gtk_tree_view_get_hover_selection:
15705  * @tree_view: a #GtkTreeView
15706  *
15707  * Returns whether hover selection mode is turned on for @tree_view.
15708  *
15709  * Return value: %TRUE if @tree_view is in hover selection mode
15710  *
15711  * Since: 2.6
15712  **/
15713 gboolean
15714 gtk_tree_view_get_hover_selection (GtkTreeView *tree_view)
15715 {
15716   return tree_view->priv->hover_selection;
15717 }
15718
15719 /**
15720  * gtk_tree_view_set_hover_expand:
15721  * @tree_view: a #GtkTreeView
15722  * @expand: %TRUE to enable hover selection mode
15723  *
15724  * Enables of disables the hover expansion mode of @tree_view.
15725  * Hover expansion makes rows expand or collapse if the pointer
15726  * moves over them.
15727  *
15728  * Since: 2.6
15729  **/
15730 void
15731 gtk_tree_view_set_hover_expand (GtkTreeView *tree_view,
15732                                 gboolean     expand)
15733 {
15734   expand = expand != FALSE;
15735
15736   if (expand != tree_view->priv->hover_expand)
15737     {
15738       tree_view->priv->hover_expand = expand;
15739
15740       g_object_notify (G_OBJECT (tree_view), "hover-expand");
15741     }
15742 }
15743
15744 /**
15745  * gtk_tree_view_get_hover_expand:
15746  * @tree_view: a #GtkTreeView
15747  *
15748  * Returns whether hover expansion mode is turned on for @tree_view.
15749  *
15750  * Return value: %TRUE if @tree_view is in hover expansion mode
15751  *
15752  * Since: 2.6
15753  **/
15754 gboolean
15755 gtk_tree_view_get_hover_expand (GtkTreeView *tree_view)
15756 {
15757   return tree_view->priv->hover_expand;
15758 }
15759
15760 /**
15761  * gtk_tree_view_set_rubber_banding:
15762  * @tree_view: a #GtkTreeView
15763  * @enable: %TRUE to enable rubber banding
15764  *
15765  * Enables or disables rubber banding in @tree_view.  If the selection mode
15766  * is #GTK_SELECTION_MULTIPLE, rubber banding will allow the user to select
15767  * multiple rows by dragging the mouse.
15768  *
15769  * Since: 2.10
15770  **/
15771 void
15772 gtk_tree_view_set_rubber_banding (GtkTreeView *tree_view,
15773                                   gboolean     enable)
15774 {
15775   enable = enable != FALSE;
15776
15777   if (enable != tree_view->priv->rubber_banding_enable)
15778     {
15779       tree_view->priv->rubber_banding_enable = enable;
15780
15781       g_object_notify (G_OBJECT (tree_view), "rubber-banding");
15782     }
15783 }
15784
15785 /**
15786  * gtk_tree_view_get_rubber_banding:
15787  * @tree_view: a #GtkTreeView
15788  *
15789  * Returns whether rubber banding is turned on for @tree_view.  If the
15790  * selection mode is #GTK_SELECTION_MULTIPLE, rubber banding will allow the
15791  * user to select multiple rows by dragging the mouse.
15792  *
15793  * Return value: %TRUE if rubber banding in @tree_view is enabled.
15794  *
15795  * Since: 2.10
15796  **/
15797 gboolean
15798 gtk_tree_view_get_rubber_banding (GtkTreeView *tree_view)
15799 {
15800   return tree_view->priv->rubber_banding_enable;
15801 }
15802
15803 /**
15804  * gtk_tree_view_is_rubber_banding_active:
15805  * @tree_view: a #GtkTreeView
15806  *
15807  * Returns whether a rubber banding operation is currently being done
15808  * in @tree_view.
15809  *
15810  * Return value: %TRUE if a rubber banding operation is currently being
15811  * done in @tree_view.
15812  *
15813  * Since: 2.12
15814  **/
15815 gboolean
15816 gtk_tree_view_is_rubber_banding_active (GtkTreeView *tree_view)
15817 {
15818   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), FALSE);
15819
15820   if (tree_view->priv->rubber_banding_enable
15821       && tree_view->priv->rubber_band_status == RUBBER_BAND_ACTIVE)
15822     return TRUE;
15823
15824   return FALSE;
15825 }
15826
15827 /**
15828  * gtk_tree_view_get_row_separator_func: (skip)
15829  * @tree_view: a #GtkTreeView
15830  *
15831  * Returns the current row separator function.
15832  *
15833  * Return value: the current row separator function.
15834  *
15835  * Since: 2.6
15836  **/
15837 GtkTreeViewRowSeparatorFunc
15838 gtk_tree_view_get_row_separator_func (GtkTreeView *tree_view)
15839 {
15840   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), NULL);
15841
15842   return tree_view->priv->row_separator_func;
15843 }
15844
15845 /**
15846  * gtk_tree_view_set_row_separator_func:
15847  * @tree_view: a #GtkTreeView
15848  * @func: (allow-none): a #GtkTreeViewRowSeparatorFunc
15849  * @data: (allow-none): user data to pass to @func, or %NULL
15850  * @destroy: (allow-none): destroy notifier for @data, or %NULL
15851  *
15852  * Sets the row separator function, which is used to determine
15853  * whether a row should be drawn as a separator. If the row separator
15854  * function is %NULL, no separators are drawn. This is the default value.
15855  *
15856  * Since: 2.6
15857  **/
15858 void
15859 gtk_tree_view_set_row_separator_func (GtkTreeView                 *tree_view,
15860                                       GtkTreeViewRowSeparatorFunc  func,
15861                                       gpointer                     data,
15862                                       GDestroyNotify               destroy)
15863 {
15864   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
15865
15866   if (tree_view->priv->row_separator_destroy)
15867     tree_view->priv->row_separator_destroy (tree_view->priv->row_separator_data);
15868
15869   tree_view->priv->row_separator_func = func;
15870   tree_view->priv->row_separator_data = data;
15871   tree_view->priv->row_separator_destroy = destroy;
15872
15873   /* Have the tree recalculate heights */
15874   _gtk_rbtree_mark_invalid (tree_view->priv->tree);
15875   gtk_widget_queue_resize (GTK_WIDGET (tree_view));
15876 }
15877
15878
15879 static void
15880 gtk_tree_view_grab_notify (GtkWidget *widget,
15881                            gboolean   was_grabbed)
15882 {
15883   GtkTreeView *tree_view = GTK_TREE_VIEW (widget);
15884
15885   tree_view->priv->in_grab = !was_grabbed;
15886
15887   if (!was_grabbed)
15888     {
15889       tree_view->priv->pressed_button = -1;
15890
15891       if (tree_view->priv->rubber_band_status)
15892         gtk_tree_view_stop_rubber_band (tree_view);
15893     }
15894 }
15895
15896 static void
15897 gtk_tree_view_state_flags_changed (GtkWidget     *widget,
15898                                    GtkStateFlags  previous_state)
15899 {
15900   if (gtk_widget_get_realized (widget))
15901     gtk_tree_view_ensure_background (GTK_TREE_VIEW (widget));
15902
15903   gtk_widget_queue_draw (widget);
15904 }
15905
15906 /**
15907  * gtk_tree_view_get_grid_lines:
15908  * @tree_view: a #GtkTreeView
15909  *
15910  * Returns which grid lines are enabled in @tree_view.
15911  *
15912  * Return value: a #GtkTreeViewGridLines value indicating which grid lines
15913  * are enabled.
15914  *
15915  * Since: 2.10
15916  */
15917 GtkTreeViewGridLines
15918 gtk_tree_view_get_grid_lines (GtkTreeView *tree_view)
15919 {
15920   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), 0);
15921
15922   return tree_view->priv->grid_lines;
15923 }
15924
15925 /**
15926  * gtk_tree_view_set_grid_lines:
15927  * @tree_view: a #GtkTreeView
15928  * @grid_lines: a #GtkTreeViewGridLines value indicating which grid lines to
15929  * enable.
15930  *
15931  * Sets which grid lines to draw in @tree_view.
15932  *
15933  * Since: 2.10
15934  */
15935 void
15936 gtk_tree_view_set_grid_lines (GtkTreeView           *tree_view,
15937                               GtkTreeViewGridLines   grid_lines)
15938 {
15939   GtkTreeViewPrivate *priv;
15940   GtkWidget *widget;
15941   GtkTreeViewGridLines old_grid_lines;
15942
15943   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
15944
15945   priv = tree_view->priv;
15946   widget = GTK_WIDGET (tree_view);
15947
15948   old_grid_lines = priv->grid_lines;
15949   priv->grid_lines = grid_lines;
15950
15951   if (gtk_widget_get_realized (widget))
15952     {
15953       if (grid_lines == GTK_TREE_VIEW_GRID_LINES_NONE &&
15954           priv->grid_line_width)
15955         {
15956           priv->grid_line_width = 0;
15957         }
15958
15959       if (grid_lines != GTK_TREE_VIEW_GRID_LINES_NONE &&
15960           !priv->grid_line_width)
15961         {
15962           gint8 *dash_list;
15963
15964           gtk_widget_style_get (widget,
15965                                 "grid-line-width", &priv->grid_line_width,
15966                                 "grid-line-pattern", (gchar *)&dash_list,
15967                                 NULL);
15968
15969           if (dash_list)
15970             {
15971               priv->grid_line_dashes[0] = dash_list[0];
15972               if (dash_list[0])
15973                 priv->grid_line_dashes[1] = dash_list[1];
15974
15975               g_free (dash_list);
15976             }
15977           else
15978             {
15979               priv->grid_line_dashes[0] = 1;
15980               priv->grid_line_dashes[1] = 1;
15981             }
15982         }
15983     }
15984
15985   if (old_grid_lines != grid_lines)
15986     {
15987       gtk_widget_queue_draw (GTK_WIDGET (tree_view));
15988
15989       g_object_notify (G_OBJECT (tree_view), "enable-grid-lines");
15990     }
15991 }
15992
15993 /**
15994  * gtk_tree_view_get_enable_tree_lines:
15995  * @tree_view: a #GtkTreeView.
15996  *
15997  * Returns whether or not tree lines are drawn in @tree_view.
15998  *
15999  * Return value: %TRUE if tree lines are drawn in @tree_view, %FALSE
16000  * otherwise.
16001  *
16002  * Since: 2.10
16003  */
16004 gboolean
16005 gtk_tree_view_get_enable_tree_lines (GtkTreeView *tree_view)
16006 {
16007   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), FALSE);
16008
16009   return tree_view->priv->tree_lines_enabled;
16010 }
16011
16012 /**
16013  * gtk_tree_view_set_enable_tree_lines:
16014  * @tree_view: a #GtkTreeView
16015  * @enabled: %TRUE to enable tree line drawing, %FALSE otherwise.
16016  *
16017  * Sets whether to draw lines interconnecting the expanders in @tree_view.
16018  * This does not have any visible effects for lists.
16019  *
16020  * Since: 2.10
16021  */
16022 void
16023 gtk_tree_view_set_enable_tree_lines (GtkTreeView *tree_view,
16024                                      gboolean     enabled)
16025 {
16026   GtkTreeViewPrivate *priv;
16027   GtkWidget *widget;
16028   gboolean was_enabled;
16029
16030   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
16031
16032   enabled = enabled != FALSE;
16033
16034   priv = tree_view->priv;
16035   widget = GTK_WIDGET (tree_view);
16036
16037   was_enabled = priv->tree_lines_enabled;
16038
16039   priv->tree_lines_enabled = enabled;
16040
16041   if (gtk_widget_get_realized (widget))
16042     {
16043       if (!enabled && priv->tree_line_width)
16044         {
16045           priv->tree_line_width = 0;
16046         }
16047
16048       if (enabled && !priv->tree_line_width)
16049         {
16050           gint8 *dash_list;
16051           gtk_widget_style_get (widget,
16052                                 "tree-line-width", &priv->tree_line_width,
16053                                 "tree-line-pattern", (gchar *)&dash_list,
16054                                 NULL);
16055
16056           if (dash_list)
16057             {
16058               priv->tree_line_dashes[0] = dash_list[0];
16059               if (dash_list[0])
16060                 priv->tree_line_dashes[1] = dash_list[1];
16061
16062               g_free (dash_list);
16063             }
16064           else
16065             {
16066               priv->tree_line_dashes[0] = 1;
16067               priv->tree_line_dashes[1] = 1;
16068             }
16069         }
16070     }
16071
16072   if (was_enabled != enabled)
16073     {
16074       gtk_widget_queue_draw (GTK_WIDGET (tree_view));
16075
16076       g_object_notify (G_OBJECT (tree_view), "enable-tree-lines");
16077     }
16078 }
16079
16080
16081 /**
16082  * gtk_tree_view_set_show_expanders:
16083  * @tree_view: a #GtkTreeView
16084  * @enabled: %TRUE to enable expander drawing, %FALSE otherwise.
16085  *
16086  * Sets whether to draw and enable expanders and indent child rows in
16087  * @tree_view.  When disabled there will be no expanders visible in trees
16088  * and there will be no way to expand and collapse rows by default.  Also
16089  * note that hiding the expanders will disable the default indentation.  You
16090  * can set a custom indentation in this case using
16091  * gtk_tree_view_set_level_indentation().
16092  * This does not have any visible effects for lists.
16093  *
16094  * Since: 2.12
16095  */
16096 void
16097 gtk_tree_view_set_show_expanders (GtkTreeView *tree_view,
16098                                   gboolean     enabled)
16099 {
16100   gboolean was_enabled;
16101
16102   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
16103
16104   enabled = enabled != FALSE;
16105   was_enabled = tree_view->priv->show_expanders;
16106
16107   tree_view->priv->show_expanders = enabled == TRUE;
16108
16109   if (enabled != was_enabled)
16110     gtk_widget_queue_draw (GTK_WIDGET (tree_view));
16111 }
16112
16113 /**
16114  * gtk_tree_view_get_show_expanders:
16115  * @tree_view: a #GtkTreeView.
16116  *
16117  * Returns whether or not expanders are drawn in @tree_view.
16118  *
16119  * Return value: %TRUE if expanders are drawn in @tree_view, %FALSE
16120  * otherwise.
16121  *
16122  * Since: 2.12
16123  */
16124 gboolean
16125 gtk_tree_view_get_show_expanders (GtkTreeView *tree_view)
16126 {
16127   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), FALSE);
16128
16129   return tree_view->priv->show_expanders;
16130 }
16131
16132 /**
16133  * gtk_tree_view_set_level_indentation:
16134  * @tree_view: a #GtkTreeView
16135  * @indentation: the amount, in pixels, of extra indentation in @tree_view.
16136  *
16137  * Sets the amount of extra indentation for child levels to use in @tree_view
16138  * in addition to the default indentation.  The value should be specified in
16139  * pixels, a value of 0 disables this feature and in this case only the default
16140  * indentation will be used.
16141  * This does not have any visible effects for lists.
16142  *
16143  * Since: 2.12
16144  */
16145 void
16146 gtk_tree_view_set_level_indentation (GtkTreeView *tree_view,
16147                                      gint         indentation)
16148 {
16149   tree_view->priv->level_indentation = indentation;
16150
16151   gtk_widget_queue_draw (GTK_WIDGET (tree_view));
16152 }
16153
16154 /**
16155  * gtk_tree_view_get_level_indentation:
16156  * @tree_view: a #GtkTreeView.
16157  *
16158  * Returns the amount, in pixels, of extra indentation for child levels
16159  * in @tree_view.
16160  *
16161  * Return value: the amount of extra indentation for child levels in
16162  * @tree_view.  A return value of 0 means that this feature is disabled.
16163  *
16164  * Since: 2.12
16165  */
16166 gint
16167 gtk_tree_view_get_level_indentation (GtkTreeView *tree_view)
16168 {
16169   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), 0);
16170
16171   return tree_view->priv->level_indentation;
16172 }
16173
16174 /**
16175  * gtk_tree_view_set_tooltip_row:
16176  * @tree_view: a #GtkTreeView
16177  * @tooltip: a #GtkTooltip
16178  * @path: a #GtkTreePath
16179  *
16180  * Sets the tip area of @tooltip to be the area covered by the row at @path.
16181  * See also gtk_tree_view_set_tooltip_column() for a simpler alternative.
16182  * See also gtk_tooltip_set_tip_area().
16183  *
16184  * Since: 2.12
16185  */
16186 void
16187 gtk_tree_view_set_tooltip_row (GtkTreeView *tree_view,
16188                                GtkTooltip  *tooltip,
16189                                GtkTreePath *path)
16190 {
16191   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
16192   g_return_if_fail (GTK_IS_TOOLTIP (tooltip));
16193
16194   gtk_tree_view_set_tooltip_cell (tree_view, tooltip, path, NULL, NULL);
16195 }
16196
16197 /**
16198  * gtk_tree_view_set_tooltip_cell:
16199  * @tree_view: a #GtkTreeView
16200  * @tooltip: a #GtkTooltip
16201  * @path: (allow-none): a #GtkTreePath or %NULL
16202  * @column: (allow-none): a #GtkTreeViewColumn or %NULL
16203  * @cell: (allow-none): a #GtkCellRenderer or %NULL
16204  *
16205  * Sets the tip area of @tooltip to the area @path, @column and @cell have
16206  * in common.  For example if @path is %NULL and @column is set, the tip
16207  * area will be set to the full area covered by @column.  See also
16208  * gtk_tooltip_set_tip_area().
16209  *
16210  * Note that if @path is not specified and @cell is set and part of a column
16211  * containing the expander, the tooltip might not show and hide at the correct
16212  * position.  In such cases @path must be set to the current node under the
16213  * mouse cursor for this function to operate correctly.
16214  *
16215  * See also gtk_tree_view_set_tooltip_column() for a simpler alternative.
16216  *
16217  * Since: 2.12
16218  */
16219 void
16220 gtk_tree_view_set_tooltip_cell (GtkTreeView       *tree_view,
16221                                 GtkTooltip        *tooltip,
16222                                 GtkTreePath       *path,
16223                                 GtkTreeViewColumn *column,
16224                                 GtkCellRenderer   *cell)
16225 {
16226   GtkAllocation allocation;
16227   GdkRectangle rect;
16228
16229   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
16230   g_return_if_fail (GTK_IS_TOOLTIP (tooltip));
16231   g_return_if_fail (column == NULL || GTK_IS_TREE_VIEW_COLUMN (column));
16232   g_return_if_fail (cell == NULL || GTK_IS_CELL_RENDERER (cell));
16233
16234   /* Determine x values. */
16235   if (column && cell)
16236     {
16237       GdkRectangle tmp;
16238       gint start, width;
16239
16240       /* We always pass in path here, whether it is NULL or not.
16241        * For cells in expander columns path must be specified so that
16242        * we can correctly account for the indentation.  This also means
16243        * that the tooltip is constrained vertically by the "Determine y
16244        * values" code below; this is not a real problem since cells actually
16245        * don't stretch vertically in constrast to columns.
16246        */
16247       gtk_tree_view_get_cell_area (tree_view, path, column, &tmp);
16248       gtk_tree_view_column_cell_get_position (column, cell, &start, &width);
16249
16250       gtk_tree_view_convert_bin_window_to_widget_coords (tree_view,
16251                                                          tmp.x + start, 0,
16252                                                          &rect.x, NULL);
16253       rect.width = width;
16254     }
16255   else if (column)
16256     {
16257       GdkRectangle tmp;
16258
16259       gtk_tree_view_get_background_area (tree_view, NULL, column, &tmp);
16260       gtk_tree_view_convert_bin_window_to_widget_coords (tree_view,
16261                                                          tmp.x, 0,
16262                                                          &rect.x, NULL);
16263       rect.width = tmp.width;
16264     }
16265   else
16266     {
16267       gtk_widget_get_allocation (GTK_WIDGET (tree_view), &allocation);
16268       rect.x = 0;
16269       rect.width = allocation.width;
16270     }
16271
16272   /* Determine y values. */
16273   if (path)
16274     {
16275       GdkRectangle tmp;
16276
16277       gtk_tree_view_get_background_area (tree_view, path, NULL, &tmp);
16278       gtk_tree_view_convert_bin_window_to_widget_coords (tree_view,
16279                                                          0, tmp.y,
16280                                                          NULL, &rect.y);
16281       rect.height = tmp.height;
16282     }
16283   else
16284     {
16285       rect.y = 0;
16286       rect.height = gtk_adjustment_get_page_size (tree_view->priv->vadjustment);
16287     }
16288
16289   gtk_tooltip_set_tip_area (tooltip, &rect);
16290 }
16291
16292 /**
16293  * gtk_tree_view_get_tooltip_context:
16294  * @tree_view: a #GtkTreeView
16295  * @x: (inout): the x coordinate (relative to widget coordinates)
16296  * @y: (inout): the y coordinate (relative to widget coordinates)
16297  * @keyboard_tip: whether this is a keyboard tooltip or not
16298  * @model: (out) (allow-none) (transfer none): a pointer to receive a
16299  *         #GtkTreeModel or %NULL
16300  * @path: (out) (allow-none): a pointer to receive a #GtkTreePath or %NULL
16301  * @iter: (out) (allow-none): a pointer to receive a #GtkTreeIter or %NULL
16302  *
16303  * This function is supposed to be used in a #GtkWidget::query-tooltip
16304  * signal handler for #GtkTreeView.  The @x, @y and @keyboard_tip values
16305  * which are received in the signal handler, should be passed to this
16306  * function without modification.
16307  *
16308  * The return value indicates whether there is a tree view row at the given
16309  * coordinates (%TRUE) or not (%FALSE) for mouse tooltips.  For keyboard
16310  * tooltips the row returned will be the cursor row.  When %TRUE, then any of
16311  * @model, @path and @iter which have been provided will be set to point to
16312  * that row and the corresponding model.  @x and @y will always be converted
16313  * to be relative to @tree_view's bin_window if @keyboard_tooltip is %FALSE.
16314  *
16315  * Return value: whether or not the given tooltip context points to a row.
16316  *
16317  * Since: 2.12
16318  */
16319 gboolean
16320 gtk_tree_view_get_tooltip_context (GtkTreeView   *tree_view,
16321                                    gint          *x,
16322                                    gint          *y,
16323                                    gboolean       keyboard_tip,
16324                                    GtkTreeModel **model,
16325                                    GtkTreePath  **path,
16326                                    GtkTreeIter   *iter)
16327 {
16328   GtkTreePath *tmppath = NULL;
16329
16330   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), FALSE);
16331   g_return_val_if_fail (x != NULL, FALSE);
16332   g_return_val_if_fail (y != NULL, FALSE);
16333
16334   if (keyboard_tip)
16335     {
16336       gtk_tree_view_get_cursor (tree_view, &tmppath, NULL);
16337
16338       if (!tmppath)
16339         return FALSE;
16340     }
16341   else
16342     {
16343       gtk_tree_view_convert_widget_to_bin_window_coords (tree_view, *x, *y,
16344                                                          x, y);
16345
16346       if (!gtk_tree_view_get_path_at_pos (tree_view, *x, *y,
16347                                           &tmppath, NULL, NULL, NULL))
16348         return FALSE;
16349     }
16350
16351   if (model)
16352     *model = gtk_tree_view_get_model (tree_view);
16353
16354   if (iter)
16355     gtk_tree_model_get_iter (gtk_tree_view_get_model (tree_view),
16356                              iter, tmppath);
16357
16358   if (path)
16359     *path = tmppath;
16360   else
16361     gtk_tree_path_free (tmppath);
16362
16363   return TRUE;
16364 }
16365
16366 static gboolean
16367 gtk_tree_view_set_tooltip_query_cb (GtkWidget  *widget,
16368                                     gint        x,
16369                                     gint        y,
16370                                     gboolean    keyboard_tip,
16371                                     GtkTooltip *tooltip,
16372                                     gpointer    data)
16373 {
16374   GValue value = G_VALUE_INIT;
16375   GValue transformed = G_VALUE_INIT;
16376   GtkTreeIter iter;
16377   GtkTreePath *path;
16378   GtkTreeModel *model;
16379   GtkTreeView *tree_view = GTK_TREE_VIEW (widget);
16380
16381   if (!gtk_tree_view_get_tooltip_context (GTK_TREE_VIEW (widget),
16382                                           &x, &y,
16383                                           keyboard_tip,
16384                                           &model, &path, &iter))
16385     return FALSE;
16386
16387   gtk_tree_model_get_value (model, &iter,
16388                             tree_view->priv->tooltip_column, &value);
16389
16390   g_value_init (&transformed, G_TYPE_STRING);
16391
16392   if (!g_value_transform (&value, &transformed))
16393     {
16394       g_value_unset (&value);
16395       gtk_tree_path_free (path);
16396
16397       return FALSE;
16398     }
16399
16400   g_value_unset (&value);
16401
16402   if (!g_value_get_string (&transformed))
16403     {
16404       g_value_unset (&transformed);
16405       gtk_tree_path_free (path);
16406
16407       return FALSE;
16408     }
16409
16410   gtk_tooltip_set_markup (tooltip, g_value_get_string (&transformed));
16411   gtk_tree_view_set_tooltip_row (tree_view, tooltip, path);
16412
16413   gtk_tree_path_free (path);
16414   g_value_unset (&transformed);
16415
16416   return TRUE;
16417 }
16418
16419 /**
16420  * gtk_tree_view_set_tooltip_column:
16421  * @tree_view: a #GtkTreeView
16422  * @column: an integer, which is a valid column number for @tree_view's model
16423  *
16424  * If you only plan to have simple (text-only) tooltips on full rows, you
16425  * can use this function to have #GtkTreeView handle these automatically
16426  * for you. @column should be set to the column in @tree_view's model
16427  * containing the tooltip texts, or -1 to disable this feature.
16428  *
16429  * When enabled, #GtkWidget::has-tooltip will be set to %TRUE and
16430  * @tree_view will connect a #GtkWidget::query-tooltip signal handler.
16431  *
16432  * Note that the signal handler sets the text with gtk_tooltip_set_markup(),
16433  * so &amp;, &lt;, etc have to be escaped in the text.
16434  *
16435  * Since: 2.12
16436  */
16437 void
16438 gtk_tree_view_set_tooltip_column (GtkTreeView *tree_view,
16439                                   gint         column)
16440 {
16441   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
16442
16443   if (column == tree_view->priv->tooltip_column)
16444     return;
16445
16446   if (column == -1)
16447     {
16448       g_signal_handlers_disconnect_by_func (tree_view,
16449                                             gtk_tree_view_set_tooltip_query_cb,
16450                                             NULL);
16451       gtk_widget_set_has_tooltip (GTK_WIDGET (tree_view), FALSE);
16452     }
16453   else
16454     {
16455       if (tree_view->priv->tooltip_column == -1)
16456         {
16457           g_signal_connect (tree_view, "query-tooltip",
16458                             G_CALLBACK (gtk_tree_view_set_tooltip_query_cb), NULL);
16459           gtk_widget_set_has_tooltip (GTK_WIDGET (tree_view), TRUE);
16460         }
16461     }
16462
16463   tree_view->priv->tooltip_column = column;
16464   g_object_notify (G_OBJECT (tree_view), "tooltip-column");
16465 }
16466
16467 /**
16468  * gtk_tree_view_get_tooltip_column:
16469  * @tree_view: a #GtkTreeView
16470  *
16471  * Returns the column of @tree_view's model which is being used for
16472  * displaying tooltips on @tree_view's rows.
16473  *
16474  * Return value: the index of the tooltip column that is currently being
16475  * used, or -1 if this is disabled.
16476  *
16477  * Since: 2.12
16478  */
16479 gint
16480 gtk_tree_view_get_tooltip_column (GtkTreeView *tree_view)
16481 {
16482   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), 0);
16483
16484   return tree_view->priv->tooltip_column;
16485 }