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

   1 /* gtktreeview.c
   2  * Copyright (C) 2000  Red Hat, Inc.,  Jonathan Blandford <jrb@redhat.com>
   3  *
   4  * This library is free software; you can redistribute it and/or
   5  * modify it under the terms of the GNU Library General Public
   6  * License as published by the Free Software Foundation; either
   7  * version 2 of the License, or (at your option) any later version.
   8  *
   9  * This library is distributed in the hope that it will be useful,
  10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  12  * Library General Public License for more details.
  13  *
  14  * You should have received a copy of the GNU Library General Public
  15  * License along with this library; if not, write to the
  16  * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
  17  * Boston, MA 02111-1307, USA.
  18  */
  19
  20
  21 #include "config.h"
  22
  23 #include <math.h>
  24 #include <string.h>
  25
  26 #include "gtktreeview.h"
  27 #include "gtkrbtree.h"
  28 #include "gtktreednd.h"
  29 #include "gtktreeprivate.h"
  30 #include "gtkcellrenderer.h"
  31 #include "gtkmarshalers.h"
  32 #include "gtkbuildable.h"
  33 #include "gtkbutton.h"
  34 #include "gtklabel.h"
  35 #include "gtkbox.h"
  36 #include "gtkarrow.h"
  37 #include "gtkintl.h"
  38 #include "gtkbindings.h"
  39 #include "gtkcontainer.h"
  40 #include "gtkentry.h"
  41 #include "gtkframe.h"
  42 #include "gtkmain.h"
  43 #include "gtktreemodelsort.h"
  44 #include "gtktooltip.h"
  45 #include "gtkscrollable.h"
  46 #include "gtkcelllayout.h"
  47 #include "gtkprivate.h"
  48 #include "gtkwidgetprivate.h"
  49 #include "gtkentryprivate.h"
  50 #include "gtkstylecontextprivate.h"
  51 #include "gtktypebuiltins.h"
  52 #include "gtkmain.h"
  53 #include "a11y/gtktreeviewaccessible.h"
  54
  55
  56 /**
  57  * SECTION:gtktreeview
  58  * @Short_description: A widget for displaying both trees and lists
  59  * @Title: GtkTreeView
  60  * @See_also: #GtkTreeViewColumn, #GtkTreeSelection, #GtkTreeDnd, #GtkTreeMode,
  61  *   #GtkTreeSortable, #GtkTreeModelSort, #GtkListStore, #GtkTreeStore,
  62  *   #GtkCellRenderer, #GtkCellEditable, #GtkCellRendererPixbuf,
  63  *   #GtkCellRendererText, #GtkCellRendererToggle
  64  *
  65  * Widget that displays any object that implements the #GtkTreeModel interface.
  66  *
  67  * Please refer to the <link linkend="TreeWidget">tree widget conceptual
  68  * overview</link> for an overview of all the objects and data types related
  69  * to the tree widget and how they work together.
  70  *
  71  * Several different coordinate systems are exposed in the GtkTreeView API.
  72  * These are:
  73  *
  74  * <inlinegraphic fileref="tree-view-coordinates.png" format="PNG"></inlinegraphic>
  75  * <variablelist><title>Coordinate systems in GtkTreeView API</title>
  76  * <varlistentry><term>Widget coordinates</term>
  77  * <listitem>
  78  * <para>
  79  * Coordinates relative to the widget (usually <literal>widget->window</literal>).
  80  * </para>
  81  * </listitem>
  82  * </varlistentry>
  83  * <varlistentry><term>Bin window coordinates</term>
  84  * <listitem>
  85  * <para>
  86  * Coordinates relative to the window that GtkTreeView renders to.
  87  * </para>
  88  * </listitem>
  89  * </varlistentry>
  90  * <varlistentry><term>Tree coordinates</term>
  91  * <listitem>
  92  * <para>
  93  * Coordinates relative to the entire scrollable area of GtkTreeView. These
  94  * coordinates start at (0, 0) for row 0 of the tree.
  95  * </para>
  96  * </listitem>
  97  * </varlistentry>
  98  * </variablelist>
  99  *
 100  * Several functions are available for converting between the different
 101  * coordinate systems.  The most common translations are between widget and bin
 102  * window coordinates and between bin window and tree coordinates. For the
 103  * former you can use gtk_tree_view_convert_widget_to_bin_window_coords()
 104  * (and vice versa), for the latter gtk_tree_view_convert_bin_window_to_tree_coords()
 105  * (and vice versa).
 106  *
 107  * <refsect2 id="GtkTreeView-BUILDER-UI">
 108  * <title>GtkTreeView as GtkBuildable</title>
 109  * The GtkTreeView implementation of the GtkBuildable interface accepts
 110  * #GtkTreeViewColumn objects as &lt;child&gt; elements and exposes the
 111  * internal #GtkTreeSelection in UI definitions.
 112  * <example>
 113  * <title>A UI definition fragment with GtkTreeView</title>
 114  * <programlisting><![CDATA[
 115  * <object class="GtkTreeView" id="treeview">
 116  *   <property name="model">liststore1</property>
 117  *   <child>
 118  *     <object class="GtkTreeViewColumn" id="test-column">
 119  *       <property name="title">Test</property>
 120  *       <child>
 121  *         <object class="GtkCellRendererText" id="test-renderer"/>
 122  *         <attributes>
 123  *           <attribute name="text">1</attribute>
 124  *         </attributes>
 125  *       </child>
 126  *     </object>
 127  *   </child>
 128  *   <child internal-child="selection">
 129  *     <object class="GtkTreeSelection" id="selection">
 130  *       <signal name="changed" handler="on_treeview_selection_changed"/>
 131  *     </object>
 132  *   </child>
 133  * </object>
 134  * ]]></programlisting>
 135  * </example>
 136  * </refsect2>
 137  */
 138
 139 enum
 140 {
 141   DRAG_COLUMN_WINDOW_STATE_UNSET = 0,
 142   DRAG_COLUMN_WINDOW_STATE_ORIGINAL = 1,
 143   DRAG_COLUMN_WINDOW_STATE_ARROW = 2,
 144   DRAG_COLUMN_WINDOW_STATE_ARROW_LEFT = 3,
 145   DRAG_COLUMN_WINDOW_STATE_ARROW_RIGHT = 4
 146 };
 147
 148 enum
 149 {
 150   RUBBER_BAND_OFF = 0,
 151   RUBBER_BAND_MAYBE_START = 1,
 152   RUBBER_BAND_ACTIVE = 2
 153 };
 154
 155  /* This lovely little value is used to determine how far away from the title bar
 156   * you can move the mouse and still have a column drag work.
 157   */
 158 #define TREE_VIEW_COLUMN_DRAG_DEAD_MULTIPLIER(tree_view) (10*gtk_tree_view_get_effective_header_height(tree_view))
 159
 160 #ifdef __GNUC__
 161
 162 #define TREE_VIEW_INTERNAL_ASSERT(expr, ret)     G_STMT_START{          \
 163      if (!(expr))                                                       \
 164        {                                                                \
 165          g_log (G_LOG_DOMAIN,                                           \
 166                 G_LOG_LEVEL_CRITICAL,                                   \
 167                 "%s (%s): assertion `%s' failed.\n"                     \
 168                 "There is a disparity between the internal view of the GtkTreeView,\n"    \
 169                 "and the GtkTreeModel.  This generally means that the model has changed\n"\
 170                 "without letting the view know.  Any display from now on is likely to\n"  \
 171                 "be incorrect.\n",                                                        \
 172                 G_STRLOC,                                               \
 173                 G_STRFUNC,                                              \
 174                 #expr);                                                 \
 175          return ret;                                                    \
 176        };                               }G_STMT_END
 177
 178 #define TREE_VIEW_INTERNAL_ASSERT_VOID(expr)     G_STMT_START{          \
 179      if (!(expr))                                                       \
 180        {                                                                \
 181          g_log (G_LOG_DOMAIN,                                           \
 182                 G_LOG_LEVEL_CRITICAL,                                   \
 183                 "%s (%s): assertion `%s' failed.\n"                     \
 184                 "There is a disparity between the internal view of the GtkTreeView,\n"    \
 185                 "and the GtkTreeModel.  This generally means that the model has changed\n"\
 186                 "without letting the view know.  Any display from now on is likely to\n"  \
 187                 "be incorrect.\n",                                                        \
 188                 G_STRLOC,                                               \
 189                 G_STRFUNC,                                              \
 190                 #expr);                                                 \
 191          return;                                                        \
 192        };                               }G_STMT_END
 193
 194 #else
 195
 196 #define TREE_VIEW_INTERNAL_ASSERT(expr, ret)     G_STMT_START{          \
 197      if (!(expr))                                                       \
 198        {                                                                \
 199          g_log (G_LOG_DOMAIN,                                           \
 200                 G_LOG_LEVEL_CRITICAL,                                   \
 201                 "file %s: line %d: assertion `%s' failed.\n"       \
 202                 "There is a disparity between the internal view of the GtkTreeView,\n"    \
 203                 "and the GtkTreeModel.  This generally means that the model has changed\n"\
 204                 "without letting the view know.  Any display from now on is likely to\n"  \
 205                 "be incorrect.\n",                                                        \
 206                 __FILE__,                                               \
 207                 __LINE__,                                               \
 208                 #expr);                                                 \
 209          return ret;                                                    \
 210        };                               }G_STMT_END
 211
 212 #define TREE_VIEW_INTERNAL_ASSERT_VOID(expr)     G_STMT_START{          \
 213      if (!(expr))                                                       \
 214        {                                                                \
 215          g_log (G_LOG_DOMAIN,                                           \
 216                 G_LOG_LEVEL_CRITICAL,                                   \
 217                 "file %s: line %d: assertion '%s' failed.\n"            \
 218                 "There is a disparity between the internal view of the GtkTreeView,\n"    \
 219                 "and the GtkTreeModel.  This generally means that the model has changed\n"\
 220                 "without letting the view know.  Any display from now on is likely to\n"  \
 221                 "be incorrect.\n",                                                        \
 222                 __FILE__,                                               \
 223                 __LINE__,                                               \
 224                 #expr);                                                 \
 225          return;                                                        \
 226        };                               }G_STMT_END
 227 #endif
 228
 229 #define GTK_TREE_VIEW_PRIORITY_VALIDATE (GDK_PRIORITY_REDRAW + 5)
 230 #define GTK_TREE_VIEW_PRIORITY_SCROLL_SYNC (GTK_TREE_VIEW_PRIORITY_VALIDATE + 2)
 231 #define GTK_TREE_VIEW_TIME_MS_PER_IDLE 30
 232 #define SCROLL_EDGE_SIZE 15
 233 #define EXPANDER_EXTRA_PADDING 4
 234 #define GTK_TREE_VIEW_SEARCH_DIALOG_TIMEOUT 5000
 235 #define AUTO_EXPAND_TIMEOUT 500
 236
 237 /* Translate from bin_window coordinates to rbtree (tree coordinates) and
 238  * vice versa.
 239  */
 240 #define TREE_WINDOW_Y_TO_RBTREE_Y(tree_view,y) ((y) + tree_view->priv->dy)
 241 #define RBTREE_Y_TO_TREE_WINDOW_Y(tree_view,y) ((y) - tree_view->priv->dy)
 242
 243 typedef struct _GtkTreeViewColumnReorder GtkTreeViewColumnReorder;
 244 struct _GtkTreeViewColumnReorder
 245 {
 246   gint left_align;
 247   gint right_align;
 248   GtkTreeViewColumn *left_column;
 249   GtkTreeViewColumn *right_column;
 250 };
 251
 252 typedef struct _GtkTreeViewChild GtkTreeViewChild;
 253 struct _GtkTreeViewChild
 254 {
 255   GtkWidget *widget;
 256   gint x;
 257   gint y;
 258   gint width;
 259   gint height;
 260 };
 261
 262
 263 typedef struct _TreeViewDragInfo TreeViewDragInfo;
 264 struct _TreeViewDragInfo
 265 {
 266   GdkModifierType start_button_mask;
 267   GtkTargetList *_unused_source_target_list;
 268   GdkDragAction source_actions;
 269
 270   GtkTargetList *_unused_dest_target_list;
 271
 272   guint source_set : 1;
 273   guint dest_set : 1;
 274 };
 275
 276
 277 struct _GtkTreeViewPrivate
 278 {
 279   GtkTreeModel *model;
 280
 281   /* tree information */
 282   GtkRBTree *tree;
 283
 284   /* Container info */
 285   GList *children;
 286   gint width;
 287   gint height;
 288
 289   /* Adjustments */
 290   GtkAdjustment *hadjustment;
 291   GtkAdjustment *vadjustment;
 292   gint           min_display_width;
 293   gint           min_display_height;
 294
 295   /* Sub windows */
 296   GdkWindow *bin_window;
 297   GdkWindow *header_window;
 298
 299   /* Scroll position state keeping */
 300   GtkTreeRowReference *top_row;
 301   gint top_row_dy;
 302   /* dy == y pos of top_row + top_row_dy */
 303   /* we cache it for simplicity of the code */
 304   gint dy;
 305
 306   guint presize_handler_timer;
 307   guint validate_rows_timer;
 308   guint scroll_sync_timer;
 309
 310   /* Indentation and expander layout */
 311   gint expander_size;
 312   GtkTreeViewColumn *expander_column;
 313
 314   gint level_indentation;
 315
 316   /* Key navigation (focus), selection */
 317   gint cursor_offset;
 318
 319   GtkTreeRowReference *anchor;
 320   GtkTreeRowReference *cursor;
 321
 322   GtkTreeViewColumn *focus_column;
 323
 324   /* Current pressed node, previously pressed, prelight */
 325   GtkRBNode *button_pressed_node;
 326   GtkRBTree *button_pressed_tree;
 327
 328   gint pressed_button;
 329   gint press_start_x;
 330   gint press_start_y;
 331
 332   gint event_last_x;
 333   gint event_last_y;
 334
 335   guint last_button_time;
 336   gint last_button_x;
 337   gint last_button_y;
 338
 339   GtkRBNode *prelight_node;
 340   GtkRBTree *prelight_tree;
 341
 342   /* Cell Editing */
 343   GtkTreeViewColumn *edited_column;
 344
 345   /* The node that's currently being collapsed or expanded */
 346   GtkRBNode *expanded_collapsed_node;
 347   GtkRBTree *expanded_collapsed_tree;
 348   guint expand_collapse_timeout;
 349
 350   /* Auto expand/collapse timeout in hover mode */
 351   guint auto_expand_timeout;
 352
 353   /* Selection information */
 354   GtkTreeSelection *selection;
 355
 356   /* Header information */
 357   gint n_columns;
 358   GList *columns;
 359   gint header_height;
 360
 361   GtkTreeViewColumnDropFunc column_drop_func;
 362   gpointer column_drop_func_data;
 363   GDestroyNotify column_drop_func_data_destroy;
 364   GList *column_drag_info;
 365   GtkTreeViewColumnReorder *cur_reorder;
 366
 367   gint prev_width_before_expander;
 368
 369   /* Interactive Header reordering */
 370   GdkWindow *drag_window;
 371   GdkWindow *drag_highlight_window;
 372   GtkTreeViewColumn *drag_column;
 373   gint drag_column_x;
 374
 375   /* Interactive Header Resizing */
 376   gint drag_pos;
 377   gint x_drag;
 378
 379   /* Non-interactive Header Resizing, expand flag support */
 380   gint prev_width;
 381
 382   gint last_extra_space;
 383   gint last_extra_space_per_column;
 384   gint last_number_of_expand_columns;
 385
 386   /* ATK Hack */
 387   GtkTreeDestroyCountFunc destroy_count_func;
 388   gpointer destroy_count_data;
 389   GDestroyNotify destroy_count_destroy;
 390
 391   /* Scroll timeout (e.g. during dnd, rubber banding) */
 392   guint scroll_timeout;
 393
 394   /* Row drag-and-drop */
 395   GtkTreeRowReference *drag_dest_row;
 396   GtkTreeViewDropPosition drag_dest_pos;
 397   guint open_dest_timeout;
 398
 399   /* Rubber banding */
 400   gint rubber_band_status;
 401   gint rubber_band_x;
 402   gint rubber_band_y;
 403   gint rubber_band_extend;
 404   gint rubber_band_modify;
 405
 406   GtkRBNode *rubber_band_start_node;
 407   GtkRBTree *rubber_band_start_tree;
 408
 409   GtkRBNode *rubber_band_end_node;
 410   GtkRBTree *rubber_band_end_tree;
 411
 412   /* fixed height */
 413   gint fixed_height;
 414
 415   /* Scroll-to functionality when unrealized */
 416   GtkTreeRowReference *scroll_to_path;
 417   GtkTreeViewColumn *scroll_to_column;
 418   gfloat scroll_to_row_align;
 419   gfloat scroll_to_col_align;
 420
 421   /* Interactive search */
 422   gint selected_iter;
 423   gint search_column;
 424   GtkTreeViewSearchPositionFunc search_position_func;
 425   GtkTreeViewSearchEqualFunc search_equal_func;
 426   gpointer search_user_data;
 427   GDestroyNotify search_destroy;
 428   gpointer search_position_user_data;
 429   GDestroyNotify search_position_destroy;
 430   GtkWidget *search_window;
 431   GtkWidget *search_entry;
 432   gulong search_entry_changed_id;
 433   guint typeselect_flush_timeout;
 434
 435   /* Grid and tree lines */
 436   GtkTreeViewGridLines grid_lines;
 437   double grid_line_dashes[2];
 438   int grid_line_width;
 439
 440   gboolean tree_lines_enabled;
 441   double tree_line_dashes[2];
 442   int tree_line_width;
 443
 444   /* Row separators */
 445   GtkTreeViewRowSeparatorFunc row_separator_func;
 446   gpointer row_separator_data;
 447   GDestroyNotify row_separator_destroy;
 448
 449   /* Tooltip support */
 450   gint tooltip_column;
 451
 452   /* Here comes the bitfield */
 453   guint scroll_to_use_align : 1;
 454
 455   guint fixed_height_mode : 1;
 456   guint fixed_height_check : 1;
 457
 458   guint reorderable : 1;
 459   guint header_has_focus : 1;
 460   guint drag_column_window_state : 3;
 461   /* hint to display rows in alternating colors */
 462   guint has_rules : 1;
 463   guint mark_rows_col_dirty : 1;
 464
 465   /* for DnD */
 466   guint empty_view_drop : 1;
 467
 468   guint modify_selection_pressed : 1;
 469   guint extend_selection_pressed : 1;
 470
 471   guint init_hadjust_value : 1;
 472
 473   guint in_top_row_to_dy : 1;
 474
 475   /* interactive search */
 476   guint enable_search : 1;
 477   guint disable_popdown : 1;
 478   guint search_custom_entry_set : 1;
 479
 480   guint hover_selection : 1;
 481   guint hover_expand : 1;
 482   guint imcontext_changed : 1;
 483
 484   guint rubber_banding_enable : 1;
 485
 486   guint in_grab : 1;
 487
 488   guint post_validation_flag : 1;
 489
 490   /* Whether our key press handler is to avoid sending an unhandled binding to the search entry */
 491   guint search_entry_avoid_unhandled_binding : 1;
 492
 493   /* GtkScrollablePolicy needs to be checked when
 494    * driving the scrollable adjustment values */
 495   guint hscroll_policy : 1;
 496   guint vscroll_policy : 1;
 497
 498   /* GtkTreeView flags */
 499   guint is_list : 1;
 500   guint show_expanders : 1;
 501   guint in_column_resize : 1;
 502   guint arrow_prelit : 1;
 503   guint headers_visible : 1;
 504   guint draw_keyfocus : 1;
 505   guint model_setup : 1;
 506   guint in_column_drag : 1;
 507 };
 508
 509
 510 /* Signals */
 511 enum
 512 {
 513   ROW_ACTIVATED,
 514   TEST_EXPAND_ROW,
 515   TEST_COLLAPSE_ROW,
 516   ROW_EXPANDED,
 517   ROW_COLLAPSED,
 518   COLUMNS_CHANGED,
 519   CURSOR_CHANGED,
 520   MOVE_CURSOR,
 521   SELECT_ALL,
 522   UNSELECT_ALL,
 523   SELECT_CURSOR_ROW,
 524   TOGGLE_CURSOR_ROW,
 525   EXPAND_COLLAPSE_CURSOR_ROW,
 526   SELECT_CURSOR_PARENT,
 527   START_INTERACTIVE_SEARCH,
 528   LAST_SIGNAL
 529 };
 530
 531 /* Properties */
 532 enum {
 533   PROP_0,
 534   PROP_MODEL,
 535   PROP_HADJUSTMENT,
 536   PROP_VADJUSTMENT,
 537   PROP_HSCROLL_POLICY,
 538   PROP_VSCROLL_POLICY,
 539   PROP_HEADERS_VISIBLE,
 540   PROP_HEADERS_CLICKABLE,
 541   PROP_EXPANDER_COLUMN,
 542   PROP_REORDERABLE,
 543   PROP_RULES_HINT,
 544   PROP_ENABLE_SEARCH,
 545   PROP_SEARCH_COLUMN,
 546   PROP_FIXED_HEIGHT_MODE,
 547   PROP_HOVER_SELECTION,
 548   PROP_HOVER_EXPAND,
 549   PROP_SHOW_EXPANDERS,
 550   PROP_LEVEL_INDENTATION,
 551   PROP_RUBBER_BANDING,
 552   PROP_ENABLE_GRID_LINES,
 553   PROP_ENABLE_TREE_LINES,
 554   PROP_TOOLTIP_COLUMN
 555 };
 556
 557 /* object signals */
 558 static void     gtk_tree_view_finalize             (GObject          *object);
 559 static void     gtk_tree_view_set_property         (GObject         *object,
 560                                                     guint            prop_id,
 561                                                     const GValue    *value,
 562                                                     GParamSpec      *pspec);
 563 static void     gtk_tree_view_get_property         (GObject         *object,
 564                                                     guint            prop_id,
 565                                                     GValue          *value,
 566                                                     GParamSpec      *pspec);
 567
 568 /* gtkwidget signals */
 569 static void     gtk_tree_view_destroy              (GtkWidget        *widget);
 570 static void     gtk_tree_view_realize              (GtkWidget        *widget);
 571 static void     gtk_tree_view_unrealize            (GtkWidget        *widget);
 572 static void     gtk_tree_view_map                  (GtkWidget        *widget);
 573 static void     gtk_tree_view_get_preferred_width  (GtkWidget        *widget,
 574                                                     gint             *minimum,
 575                                                     gint             *natural);
 576 static void     gtk_tree_view_get_preferred_height (GtkWidget        *widget,
 577                                                     gint             *minimum,
 578                                                     gint             *natural);
 579 static void     gtk_tree_view_size_request         (GtkWidget        *widget,
 580                                                     GtkRequisition   *requisition,
 581                                                     gboolean          may_validate);
 582 static void     gtk_tree_view_size_allocate        (GtkWidget        *widget,
 583                                                     GtkAllocation    *allocation);
 584 static gboolean gtk_tree_view_draw                 (GtkWidget        *widget,
 585                                                     cairo_t          *cr);
 586 static gboolean gtk_tree_view_key_press            (GtkWidget        *widget,
 587                                                     GdkEventKey      *event);
 588 static gboolean gtk_tree_view_key_release          (GtkWidget        *widget,
 589                                                     GdkEventKey      *event);
 590 static gboolean gtk_tree_view_motion               (GtkWidget        *widget,
 591                                                     GdkEventMotion   *event);
 592 static gboolean gtk_tree_view_enter_notify         (GtkWidget        *widget,
 593                                                     GdkEventCrossing *event);
 594 static gboolean gtk_tree_view_leave_notify         (GtkWidget        *widget,
 595                                                     GdkEventCrossing *event);
 596 static gboolean gtk_tree_view_button_press         (GtkWidget        *widget,
 597                                                     GdkEventButton   *event);
 598 static gboolean gtk_tree_view_button_release       (GtkWidget        *widget,
 599                                                     GdkEventButton   *event);
 600 static gboolean gtk_tree_view_grab_broken          (GtkWidget          *widget,
 601                                                     GdkEventGrabBroken *event);
 602 #if 0
 603 static gboolean gtk_tree_view_configure            (GtkWidget         *widget,
 604                                                     GdkEventConfigure *event);
 605 #endif
 606
 607 static GtkWidgetPath * gtk_tree_view_get_path_for_child (GtkContainer *container,
 608                                                          GtkWidget    *child);
 609
 610 static void     gtk_tree_view_set_focus_child      (GtkContainer     *container,
 611                                                     GtkWidget        *child);
 612 static gint     gtk_tree_view_focus_out            (GtkWidget        *widget,
 613                                                     GdkEventFocus    *event);
 614 static gint     gtk_tree_view_focus                (GtkWidget        *widget,
 615                                                     GtkDirectionType  direction);
 616 static void     gtk_tree_view_grab_focus           (GtkWidget        *widget);
 617 static void     gtk_tree_view_style_updated        (GtkWidget        *widget);
 618 static void     gtk_tree_view_grab_notify          (GtkWidget        *widget,
 619                                                     gboolean          was_grabbed);
 620 static void     gtk_tree_view_state_flags_changed  (GtkWidget        *widget,
 621                                                     GtkStateFlags     previous_state);
 622
 623 /* container signals */
 624 static void     gtk_tree_view_remove               (GtkContainer     *container,
 625                                                     GtkWidget        *widget);
 626 static void     gtk_tree_view_forall               (GtkContainer     *container,
 627                                                     gboolean          include_internals,
 628                                                     GtkCallback       callback,
 629                                                     gpointer          callback_data);
 630
 631 /* Source side drag signals */
 632 static void gtk_tree_view_drag_begin       (GtkWidget        *widget,
 633                                             GdkDragContext   *context);
 634 static void gtk_tree_view_drag_end         (GtkWidget        *widget,
 635                                             GdkDragContext   *context);
 636 static void gtk_tree_view_drag_data_get    (GtkWidget        *widget,
 637                                             GdkDragContext   *context,
 638                                             GtkSelectionData *selection_data,
 639                                             guint             info,
 640                                             guint             time);
 641 static void gtk_tree_view_drag_data_delete (GtkWidget        *widget,
 642                                             GdkDragContext   *context);
 643
 644 /* Target side drag signals */
 645 static void     gtk_tree_view_drag_leave         (GtkWidget        *widget,
 646                                                   GdkDragContext   *context,
 647                                                   guint             time);
 648 static gboolean gtk_tree_view_drag_motion        (GtkWidget        *widget,
 649                                                   GdkDragContext   *context,
 650                                                   gint              x,
 651                                                   gint              y,
 652                                                   guint             time);
 653 static gboolean gtk_tree_view_drag_drop          (GtkWidget        *widget,
 654                                                   GdkDragContext   *context,
 655                                                   gint              x,
 656                                                   gint              y,
 657                                                   guint             time);
 658 static void     gtk_tree_view_drag_data_received (GtkWidget        *widget,
 659                                                   GdkDragContext   *context,
 660                                                   gint              x,
 661                                                   gint              y,
 662                                                   GtkSelectionData *selection_data,
 663                                                   guint             info,
 664                                                   guint             time);
 665
 666 /* tree_model signals */
 667 static gboolean gtk_tree_view_real_move_cursor            (GtkTreeView     *tree_view,
 668                                                            GtkMovementStep  step,
 669                                                            gint             count);
 670 static gboolean gtk_tree_view_real_select_all             (GtkTreeView     *tree_view);
 671 static gboolean gtk_tree_view_real_unselect_all           (GtkTreeView     *tree_view);
 672 static gboolean gtk_tree_view_real_select_cursor_row      (GtkTreeView     *tree_view,
 673                                                            gboolean         start_editing);
 674 static gboolean gtk_tree_view_real_toggle_cursor_row      (GtkTreeView     *tree_view);
 675 static gboolean gtk_tree_view_real_expand_collapse_cursor_row (GtkTreeView     *tree_view,
 676                                                                gboolean         logical,
 677                                                                gboolean         expand,
 678                                                                gboolean         open_all);
 679 static gboolean gtk_tree_view_real_select_cursor_parent   (GtkTreeView     *tree_view);
 680 static void gtk_tree_view_row_changed                     (GtkTreeModel    *model,
 681                                                            GtkTreePath     *path,
 682                                                            GtkTreeIter     *iter,
 683                                                            gpointer         data);
 684 static void gtk_tree_view_row_inserted                    (GtkTreeModel    *model,
 685                                                            GtkTreePath     *path,
 686                                                            GtkTreeIter     *iter,
 687                                                            gpointer         data);
 688 static void gtk_tree_view_row_has_child_toggled           (GtkTreeModel    *model,
 689                                                            GtkTreePath     *path,
 690                                                            GtkTreeIter     *iter,
 691                                                            gpointer         data);
 692 static void gtk_tree_view_row_deleted                     (GtkTreeModel    *model,
 693                                                            GtkTreePath     *path,
 694                                                            gpointer         data);
 695 static void gtk_tree_view_rows_reordered                  (GtkTreeModel    *model,
 696                                                            GtkTreePath     *parent,
 697                                                            GtkTreeIter     *iter,
 698                                                            gint            *new_order,
 699                                                            gpointer         data);
 700
 701 /* Incremental reflow */
 702 static gboolean validate_row             (GtkTreeView *tree_view,
 703                                           GtkRBTree   *tree,
 704                                           GtkRBNode   *node,
 705                                           GtkTreeIter *iter,
 706                                           GtkTreePath *path);
 707 static void     validate_visible_area    (GtkTreeView *tree_view);
 708 static gboolean validate_rows_handler    (GtkTreeView *tree_view);
 709 static gboolean do_validate_rows         (GtkTreeView *tree_view,
 710                                           gboolean     size_request);
 711 static gboolean validate_rows            (GtkTreeView *tree_view);
 712 static gboolean presize_handler_callback (gpointer     data);
 713 static void     install_presize_handler  (GtkTreeView *tree_view);
 714 static void     install_scroll_sync_handler (GtkTreeView *tree_view);
 715 static void     gtk_tree_view_set_top_row   (GtkTreeView *tree_view,
 716                                              GtkTreePath *path,
 717                                              gint         offset);
 718 static void     gtk_tree_view_dy_to_top_row (GtkTreeView *tree_view);
 719 static void     gtk_tree_view_top_row_to_dy (GtkTreeView *tree_view);
 720 static void     invalidate_empty_focus      (GtkTreeView *tree_view);
 721
 722 /* Internal functions */
 723 static gboolean gtk_tree_view_is_expander_column             (GtkTreeView        *tree_view,
 724                                                               GtkTreeViewColumn  *column);
 725 static inline gboolean gtk_tree_view_draw_expanders          (GtkTreeView        *tree_view);
 726 static void     gtk_tree_view_add_move_binding               (GtkBindingSet      *binding_set,
 727                                                               guint               keyval,
 728                                                               guint               modmask,
 729                                                               gboolean            add_shifted_binding,
 730                                                               GtkMovementStep     step,
 731                                                               gint                count);
 732 static gint     gtk_tree_view_unref_and_check_selection_tree (GtkTreeView        *tree_view,
 733                                                               GtkRBTree          *tree);
 734 static void     gtk_tree_view_queue_draw_path                (GtkTreeView        *tree_view,
 735                                                               GtkTreePath        *path,
 736                                                               const GdkRectangle *clip_rect);
 737 static void     gtk_tree_view_queue_draw_arrow               (GtkTreeView        *tree_view,
 738                                                               GtkRBTree          *tree,
 739                                                               GtkRBNode          *node);
 740 static void     gtk_tree_view_draw_arrow                     (GtkTreeView        *tree_view,
 741                                                               cairo_t            *cr,
 742                                                               GtkRBTree          *tree,
 743                                                               GtkRBNode          *node);
 744 static void     gtk_tree_view_get_arrow_xrange               (GtkTreeView        *tree_view,
 745                                                               GtkRBTree          *tree,
 746                                                               gint               *x1,
 747                                                               gint               *x2);
 748 static gint     gtk_tree_view_new_column_width               (GtkTreeView        *tree_view,
 749                                                               gint                i,
 750                                                               gint               *x);
 751 static void     gtk_tree_view_adjustment_changed             (GtkAdjustment      *adjustment,
 752                                                               GtkTreeView        *tree_view);
 753 static void     gtk_tree_view_build_tree                     (GtkTreeView        *tree_view,
 754                                                               GtkRBTree          *tree,
 755                                                               GtkTreeIter        *iter,
 756                                                               gint                depth,
 757                                                               gboolean            recurse);
 758 static void     gtk_tree_view_clamp_node_visible             (GtkTreeView        *tree_view,
 759                                                               GtkRBTree          *tree,
 760                                                               GtkRBNode          *node);
 761 static void     gtk_tree_view_clamp_column_visible           (GtkTreeView        *tree_view,
 762                                                               GtkTreeViewColumn  *column,
 763                                                               gboolean            focus_to_cell);
 764 static gboolean gtk_tree_view_maybe_begin_dragging_row       (GtkTreeView        *tree_view,
 765                                                               GdkEventMotion     *event);
 766 static void     gtk_tree_view_focus_to_cursor                (GtkTreeView        *tree_view);
 767 static void     gtk_tree_view_move_cursor_up_down            (GtkTreeView        *tree_view,
 768                                                               gint                count);
 769 static void     gtk_tree_view_move_cursor_page_up_down       (GtkTreeView        *tree_view,
 770                                                               gint                count);
 771 static void     gtk_tree_view_move_cursor_left_right         (GtkTreeView        *tree_view,
 772                                                               gint                count);
 773 static void     gtk_tree_view_move_cursor_start_end          (GtkTreeView        *tree_view,
 774                                                               gint                count);
 775 static gboolean gtk_tree_view_real_collapse_row              (GtkTreeView        *tree_view,
 776                                                               GtkTreePath        *path,
 777                                                               GtkRBTree          *tree,
 778                                                               GtkRBNode          *node,
 779                                                               gboolean            animate);
 780 static gboolean gtk_tree_view_real_expand_row                (GtkTreeView        *tree_view,
 781                                                               GtkTreePath        *path,
 782                                                               GtkRBTree          *tree,
 783                                                               GtkRBNode          *node,
 784                                                               gboolean            open_all,
 785                                                               gboolean            animate);
 786 static void     gtk_tree_view_real_set_cursor                (GtkTreeView        *tree_view,
 787                                                               GtkTreePath        *path,
 788                                                               gboolean            clear_and_select,
 789                                                               gboolean            clamp_node);
 790 static gboolean gtk_tree_view_has_can_focus_cell             (GtkTreeView        *tree_view);
 791 static void     column_sizing_notify                         (GObject            *object,
 792                                                               GParamSpec         *pspec,
 793                                                               gpointer            data);
 794 static void     gtk_tree_view_stop_rubber_band               (GtkTreeView        *tree_view);
 795 static void     update_prelight                              (GtkTreeView        *tree_view,
 796                                                               int                 x,
 797                                                               int                 y);
 798
 799 static inline gint gtk_tree_view_get_effective_header_height (GtkTreeView *tree_view);
 800
 801 static inline gint gtk_tree_view_get_cell_area_y_offset      (GtkTreeView *tree_view,
 802                                                               GtkRBTree   *tree,
 803                                                               GtkRBNode   *node,
 804                                                               gint         vertical_separator);
 805 static inline gint gtk_tree_view_get_cell_area_height        (GtkTreeView *tree_view,
 806                                                               GtkRBNode   *node,
 807                                                               gint         vertical_separator);
 808
 809 static inline gint gtk_tree_view_get_row_y_offset            (GtkTreeView *tree_view,
 810                                                               GtkRBTree   *tree,
 811                                                               GtkRBNode   *node);
 812 static inline gint gtk_tree_view_get_row_height              (GtkTreeView *tree_view,
 813                                                               GtkRBNode   *node);
 814
 815 /* interactive search */
 816 static void     gtk_tree_view_ensure_interactive_directory (GtkTreeView *tree_view);
 817 static void     gtk_tree_view_search_dialog_hide        (GtkWidget        *search_dialog,
 818                                                          GtkTreeView      *tree_view,
 819                                                          GdkDevice        *device);
 820 static void     gtk_tree_view_search_position_func      (GtkTreeView      *tree_view,
 821                                                          GtkWidget        *search_dialog,
 822                                                          gpointer          user_data);
 823 static void     gtk_tree_view_search_disable_popdown    (GtkEntry         *entry,
 824                                                          GtkMenu          *menu,
 825                                                          gpointer          data);
 826 static void     gtk_tree_view_search_preedit_changed    (GtkIMContext     *im_context,
 827                                                          GtkTreeView      *tree_view);
 828 static void     gtk_tree_view_search_activate           (GtkEntry         *entry,
 829                                                          GtkTreeView      *tree_view);
 830 static gboolean gtk_tree_view_real_search_enable_popdown(gpointer          data);
 831 static void     gtk_tree_view_search_enable_popdown     (GtkWidget        *widget,
 832                                                          gpointer          data);
 833 static gboolean gtk_tree_view_search_delete_event       (GtkWidget        *widget,
 834                                                          GdkEventAny      *event,
 835                                                          GtkTreeView      *tree_view);
 836 static gboolean gtk_tree_view_search_button_press_event (GtkWidget        *widget,
 837                                                          GdkEventButton   *event,
 838                                                          GtkTreeView      *tree_view);
 839 static gboolean gtk_tree_view_search_scroll_event       (GtkWidget        *entry,
 840                                                          GdkEventScroll   *event,
 841                                                          GtkTreeView      *tree_view);
 842 static gboolean gtk_tree_view_search_key_press_event    (GtkWidget        *entry,
 843                                                          GdkEventKey      *event,
 844                                                          GtkTreeView      *tree_view);
 845 static gboolean gtk_tree_view_search_move               (GtkWidget        *window,
 846                                                          GtkTreeView      *tree_view,
 847                                                          gboolean          up);
 848 static gboolean gtk_tree_view_search_equal_func         (GtkTreeModel     *model,
 849                                                          gint              column,
 850                                                          const gchar      *key,
 851                                                          GtkTreeIter      *iter,
 852                                                          gpointer          search_data);
 853 static gboolean gtk_tree_view_search_iter               (GtkTreeModel     *model,
 854                                                          GtkTreeSelection *selection,
 855                                                          GtkTreeIter      *iter,
 856                                                          const gchar      *text,
 857                                                          gint             *count,
 858                                                          gint              n);
 859 static void     gtk_tree_view_search_init               (GtkWidget        *entry,
 860                                                          GtkTreeView      *tree_view);
 861 static void     gtk_tree_view_put                       (GtkTreeView      *tree_view,
 862                                                          GtkWidget        *child_widget,
 863                                                          gint              x,
 864                                                          gint              y,
 865                                                          gint              width,
 866                                                          gint              height);
 867 static gboolean gtk_tree_view_start_editing             (GtkTreeView      *tree_view,
 868                                                          GtkTreePath      *cursor_path,
 869                                                          gboolean          edit_only);
 870 static void gtk_tree_view_stop_editing                  (GtkTreeView *tree_view,
 871                                                          gboolean     cancel_editing);
 872 static gboolean gtk_tree_view_real_start_interactive_search (GtkTreeView *tree_view,
 873                                                              GdkDevice   *device,
 874                                                              gboolean     keybinding);
 875 static gboolean gtk_tree_view_start_interactive_search      (GtkTreeView *tree_view);
 876 static GtkTreeViewColumn *gtk_tree_view_get_drop_column (GtkTreeView       *tree_view,
 877                                                          GtkTreeViewColumn *column,
 878                                                          gint               drop_position);
 879
 880 /* GtkBuildable */
 881 static void     gtk_tree_view_buildable_add_child          (GtkBuildable      *tree_view,
 882                                                             GtkBuilder        *builder,
 883                                                             GObject           *child,
 884                                                             const gchar       *type);
 885 static GObject *gtk_tree_view_buildable_get_internal_child (GtkBuildable      *buildable,
 886                                                             GtkBuilder        *builder,
 887                                                             const gchar       *childname);
 888 static void     gtk_tree_view_buildable_init               (GtkBuildableIface *iface);
 889
 890 static GtkAdjustment *gtk_tree_view_do_get_hadjustment (GtkTreeView   *tree_view);
 891 static void           gtk_tree_view_do_set_hadjustment (GtkTreeView   *tree_view,
 892                                                         GtkAdjustment *adjustment);
 893 static GtkAdjustment *gtk_tree_view_do_get_vadjustment (GtkTreeView   *tree_view);
 894 static void           gtk_tree_view_do_set_vadjustment (GtkTreeView   *tree_view,
 895                                                         GtkAdjustment *adjustment);
 896
 897 static gboolean scroll_row_timeout                   (gpointer     data);
 898 static void     add_scroll_timeout                   (GtkTreeView *tree_view);
 899 static void     remove_scroll_timeout                (GtkTreeView *tree_view);
 900
 901 static guint tree_view_signals [LAST_SIGNAL] = { 0 };
 902
 903 \f
 904
 905 /* GType Methods
 906  */
 907
 908 G_DEFINE_TYPE_WITH_CODE (GtkTreeView, gtk_tree_view, GTK_TYPE_CONTAINER,
 909                          G_IMPLEMENT_INTERFACE (GTK_TYPE_BUILDABLE,
 910                                                 gtk_tree_view_buildable_init)
 911                          G_IMPLEMENT_INTERFACE (GTK_TYPE_SCROLLABLE, NULL))
 912
 913 static void
 914 gtk_tree_view_class_init (GtkTreeViewClass *class)
 915 {
 916   GObjectClass *o_class;
 917   GtkWidgetClass *widget_class;
 918   GtkContainerClass *container_class;
 919   GtkBindingSet *binding_set;
 920
 921   binding_set = gtk_binding_set_by_class (class);
 922
 923   o_class = (GObjectClass *) class;
 924   widget_class = (GtkWidgetClass *) class;
 925   container_class = (GtkContainerClass *) class;
 926
 927   /* GObject signals */
 928   o_class->set_property = gtk_tree_view_set_property;
 929   o_class->get_property = gtk_tree_view_get_property;
 930   o_class->finalize = gtk_tree_view_finalize;
 931
 932   /* GtkWidget signals */
 933   widget_class->destroy = gtk_tree_view_destroy;
 934   widget_class->map = gtk_tree_view_map;
 935   widget_class->realize = gtk_tree_view_realize;
 936   widget_class->unrealize = gtk_tree_view_unrealize;
 937   widget_class->get_preferred_width = gtk_tree_view_get_preferred_width;
 938   widget_class->get_preferred_height = gtk_tree_view_get_preferred_height;
 939   widget_class->size_allocate = gtk_tree_view_size_allocate;
 940   widget_class->button_press_event = gtk_tree_view_button_press;
 941   widget_class->button_release_event = gtk_tree_view_button_release;
 942   widget_class->grab_broken_event = gtk_tree_view_grab_broken;
 943   /*widget_class->configure_event = gtk_tree_view_configure;*/
 944   widget_class->motion_notify_event = gtk_tree_view_motion;
 945   widget_class->draw = gtk_tree_view_draw;
 946   widget_class->key_press_event = gtk_tree_view_key_press;
 947   widget_class->key_release_event = gtk_tree_view_key_release;
 948   widget_class->enter_notify_event = gtk_tree_view_enter_notify;
 949   widget_class->leave_notify_event = gtk_tree_view_leave_notify;
 950   widget_class->focus_out_event = gtk_tree_view_focus_out;
 951   widget_class->drag_begin = gtk_tree_view_drag_begin;
 952   widget_class->drag_end = gtk_tree_view_drag_end;
 953   widget_class->drag_data_get = gtk_tree_view_drag_data_get;
 954   widget_class->drag_data_delete = gtk_tree_view_drag_data_delete;
 955   widget_class->drag_leave = gtk_tree_view_drag_leave;
 956   widget_class->drag_motion = gtk_tree_view_drag_motion;
 957   widget_class->drag_drop = gtk_tree_view_drag_drop;
 958   widget_class->drag_data_received = gtk_tree_view_drag_data_received;
 959   widget_class->focus = gtk_tree_view_focus;
 960   widget_class->grab_focus = gtk_tree_view_grab_focus;
 961   widget_class->style_updated = gtk_tree_view_style_updated;
 962   widget_class->grab_notify = gtk_tree_view_grab_notify;
 963   widget_class->state_flags_changed = gtk_tree_view_state_flags_changed;
 964
 965   /* GtkContainer signals */
 966   container_class->remove = gtk_tree_view_remove;
 967   container_class->forall = gtk_tree_view_forall;
 968   container_class->set_focus_child = gtk_tree_view_set_focus_child;
 969   container_class->get_path_for_child = gtk_tree_view_get_path_for_child;
 970
 971   class->move_cursor = gtk_tree_view_real_move_cursor;
 972   class->select_all = gtk_tree_view_real_select_all;
 973   class->unselect_all = gtk_tree_view_real_unselect_all;
 974   class->select_cursor_row = gtk_tree_view_real_select_cursor_row;
 975   class->toggle_cursor_row = gtk_tree_view_real_toggle_cursor_row;
 976   class->expand_collapse_cursor_row = gtk_tree_view_real_expand_collapse_cursor_row;
 977   class->select_cursor_parent = gtk_tree_view_real_select_cursor_parent;
 978   class->start_interactive_search = gtk_tree_view_start_interactive_search;
 979
 980   /* Properties */
 981
 982   g_object_class_install_property (o_class,
 983                                    PROP_MODEL,
 984                                    g_param_spec_object ("model",
 985                                                         P_("TreeView Model"),
 986                                                         P_("The model for the tree view"),
 987                                                         GTK_TYPE_TREE_MODEL,
 988                                                         GTK_PARAM_READWRITE));
 989
 990   g_object_class_override_property (o_class, PROP_HADJUSTMENT,    "hadjustment");
 991   g_object_class_override_property (o_class, PROP_VADJUSTMENT,    "vadjustment");
 992   g_object_class_override_property (o_class, PROP_HSCROLL_POLICY, "hscroll-policy");
 993   g_object_class_override_property (o_class, PROP_VSCROLL_POLICY, "vscroll-policy");
 994
 995   g_object_class_install_property (o_class,
 996                                    PROP_HEADERS_VISIBLE,
 997                                    g_param_spec_boolean ("headers-visible",
 998                                                          P_("Headers Visible"),
 999                                                          P_("Show the column header buttons"),
1000                                                          TRUE,
1001                                                          GTK_PARAM_READWRITE));
1002
1003   g_object_class_install_property (o_class,
1004                                    PROP_HEADERS_CLICKABLE,
1005                                    g_param_spec_boolean ("headers-clickable",
1006                                                          P_("Headers Clickable"),
1007                                                          P_("Column headers respond to click events"),
1008                                                          TRUE,
1009                                                          GTK_PARAM_READWRITE));
1010
1011   g_object_class_install_property (o_class,
1012                                    PROP_EXPANDER_COLUMN,
1013                                    g_param_spec_object ("expander-column",
1014                                                         P_("Expander Column"),
1015                                                         P_("Set the column for the expander column"),
1016                                                         GTK_TYPE_TREE_VIEW_COLUMN,
1017                                                         GTK_PARAM_READWRITE));
1018
1019   g_object_class_install_property (o_class,
1020                                    PROP_REORDERABLE,
1021                                    g_param_spec_boolean ("reorderable",
1022                                                          P_("Reorderable"),
1023                                                          P_("View is reorderable"),
1024                                                          FALSE,
1025                                                          GTK_PARAM_READWRITE));
1026
1027   g_object_class_install_property (o_class,
1028                                    PROP_RULES_HINT,
1029                                    g_param_spec_boolean ("rules-hint",
1030                                                          P_("Rules Hint"),
1031                                                          P_("Set a hint to the theme engine to draw rows in alternating colors"),
1032                                                          FALSE,
1033                                                          GTK_PARAM_READWRITE));
1034
1035     g_object_class_install_property (o_class,
1036                                      PROP_ENABLE_SEARCH,
1037                                      g_param_spec_boolean ("enable-search",
1038                                                            P_("Enable Search"),
1039                                                            P_("View allows user to search through columns interactively"),
1040                                                            TRUE,
1041                                                            GTK_PARAM_READWRITE));
1042
1043     g_object_class_install_property (o_class,
1044                                      PROP_SEARCH_COLUMN,
1045                                      g_param_spec_int ("search-column",
1046                                                        P_("Search Column"),
1047                                                        P_("Model column to search through during interactive search"),
1048                                                        -1,
1049                                                        G_MAXINT,
1050                                                        -1,
1051                                                        GTK_PARAM_READWRITE));
1052
1053     /**
1054      * GtkTreeView:fixed-height-mode:
1055      *
1056      * Setting the ::fixed-height-mode property to %TRUE speeds up
1057      * #GtkTreeView by assuming that all rows have the same height.
1058      * Only enable this option if all rows are the same height.
1059      * Please see gtk_tree_view_set_fixed_height_mode() for more
1060      * information on this option.
1061      *
1062      * Since: 2.4
1063      **/
1064     g_object_class_install_property (o_class,
1065                                      PROP_FIXED_HEIGHT_MODE,
1066                                      g_param_spec_boolean ("fixed-height-mode",
1067                                                            P_("Fixed Height Mode"),
1068                                                            P_("Speeds up GtkTreeView by assuming that all rows have the same height"),
1069                                                            FALSE,
1070                                                            GTK_PARAM_READWRITE));
1071
1072     /**
1073      * GtkTreeView:hover-selection:
1074      *
1075      * Enables or disables the hover selection mode of @tree_view.
1076      * Hover selection makes the selected row follow the pointer.
1077      * Currently, this works only for the selection modes
1078      * %GTK_SELECTION_SINGLE and %GTK_SELECTION_BROWSE.
1079      *
1080      * This mode is primarily intended for treeviews in popups, e.g.
1081      * in #GtkComboBox or #GtkEntryCompletion.
1082      *
1083      * Since: 2.6
1084      */
1085     g_object_class_install_property (o_class,
1086                                      PROP_HOVER_SELECTION,
1087                                      g_param_spec_boolean ("hover-selection",
1088                                                            P_("Hover Selection"),
1089                                                            P_("Whether the selection should follow the pointer"),
1090                                                            FALSE,
1091                                                            GTK_PARAM_READWRITE));
1092
1093     /**
1094      * GtkTreeView:hover-expand:
1095      *
1096      * Enables or disables the hover expansion mode of @tree_view.
1097      * Hover expansion makes rows expand or collapse if the pointer moves
1098      * over them.
1099      *
1100      * This mode is primarily intended for treeviews in popups, e.g.
1101      * in #GtkComboBox or #GtkEntryCompletion.
1102      *
1103      * Since: 2.6
1104      */
1105     g_object_class_install_property (o_class,
1106                                      PROP_HOVER_EXPAND,
1107                                      g_param_spec_boolean ("hover-expand",
1108                                                            P_("Hover Expand"),
1109                                                            P_("Whether rows should be expanded/collapsed when the pointer moves over them"),
1110                                                            FALSE,
1111                                                            GTK_PARAM_READWRITE));
1112
1113     /**
1114      * GtkTreeView:show-expanders:
1115      *
1116      * %TRUE if the view has expanders.
1117      *
1118      * Since: 2.12
1119      */
1120     g_object_class_install_property (o_class,
1121                                      PROP_SHOW_EXPANDERS,
1122                                      g_param_spec_boolean ("show-expanders",
1123                                                            P_("Show Expanders"),
1124                                                            P_("View has expanders"),
1125                                                            TRUE,
1126                                                            GTK_PARAM_READWRITE));
1127
1128     /**
1129      * GtkTreeView:level-indentation:
1130      *
1131      * Extra indentation for each level.
1132      *
1133      * Since: 2.12
1134      */
1135     g_object_class_install_property (o_class,
1136                                      PROP_LEVEL_INDENTATION,
1137                                      g_param_spec_int ("level-indentation",
1138                                                        P_("Level Indentation"),
1139                                                        P_("Extra indentation for each level"),
1140                                                        0,
1141                                                        G_MAXINT,
1142                                                        0,
1143                                                        GTK_PARAM_READWRITE));
1144
1145     g_object_class_install_property (o_class,
1146                                      PROP_RUBBER_BANDING,
1147                                      g_param_spec_boolean ("rubber-banding",
1148                                                            P_("Rubber Banding"),
1149                                                            P_("Whether to enable selection of multiple items by dragging the mouse pointer"),
1150                                                            FALSE,
1151                                                            GTK_PARAM_READWRITE));
1152
1153     g_object_class_install_property (o_class,
1154                                      PROP_ENABLE_GRID_LINES,
1155                                      g_param_spec_enum ("enable-grid-lines",
1156                                                         P_("Enable Grid Lines"),
1157                                                         P_("Whether grid lines should be drawn in the tree view"),
1158                                                         GTK_TYPE_TREE_VIEW_GRID_LINES,
1159                                                         GTK_TREE_VIEW_GRID_LINES_NONE,
1160                                                         GTK_PARAM_READWRITE));
1161
1162     g_object_class_install_property (o_class,
1163                                      PROP_ENABLE_TREE_LINES,
1164                                      g_param_spec_boolean ("enable-tree-lines",
1165                                                            P_("Enable Tree Lines"),
1166                                                            P_("Whether tree lines should be drawn in the tree view"),
1167                                                            FALSE,
1168                                                            GTK_PARAM_READWRITE));
1169
1170     g_object_class_install_property (o_class,
1171                                      PROP_TOOLTIP_COLUMN,
1172                                      g_param_spec_int ("tooltip-column",
1173                                                        P_("Tooltip Column"),
1174                                                        P_("The column in the model containing the tooltip texts for the rows"),
1175                                                        -1,
1176                                                        G_MAXINT,
1177                                                        -1,
1178                                                        GTK_PARAM_READWRITE));
1179
1180   /* Style properties */
1181 #define _TREE_VIEW_EXPANDER_SIZE 14
1182 #define _TREE_VIEW_VERTICAL_SEPARATOR 2
1183 #define _TREE_VIEW_HORIZONTAL_SEPARATOR 2
1184
1185   gtk_widget_class_install_style_property (widget_class,
1186                                            g_param_spec_int ("expander-size",
1187                                                              P_("Expander Size"),
1188                                                              P_("Size of the expander arrow"),
1189                                                              0,
1190                                                              G_MAXINT,
1191                                                              _TREE_VIEW_EXPANDER_SIZE,
1192                                                              GTK_PARAM_READABLE));
1193
1194   gtk_widget_class_install_style_property (widget_class,
1195                                            g_param_spec_int ("vertical-separator",
1196                                                              P_("Vertical Separator Width"),
1197                                                              P_("Vertical space between cells.  Must be an even number"),
1198                                                              0,
1199                                                              G_MAXINT,
1200                                                              _TREE_VIEW_VERTICAL_SEPARATOR,
1201                                                              GTK_PARAM_READABLE));
1202
1203   gtk_widget_class_install_style_property (widget_class,
1204                                            g_param_spec_int ("horizontal-separator",
1205                                                              P_("Horizontal Separator Width"),
1206                                                              P_("Horizontal space between cells.  Must be an even number"),
1207                                                              0,
1208                                                              G_MAXINT,
1209                                                              _TREE_VIEW_HORIZONTAL_SEPARATOR,
1210                                                              GTK_PARAM_READABLE));
1211
1212   gtk_widget_class_install_style_property (widget_class,
1213                                            g_param_spec_boolean ("allow-rules",
1214                                                                  P_("Allow Rules"),
1215                                                                  P_("Allow drawing of alternating color rows"),
1216                                                                  TRUE,
1217                                                                  GTK_PARAM_READABLE));
1218
1219   gtk_widget_class_install_style_property (widget_class,
1220                                            g_param_spec_boolean ("indent-expanders",
1221                                                                  P_("Indent Expanders"),
1222                                                                  P_("Make the expanders indented"),
1223                                                                  TRUE,
1224                                                                  GTK_PARAM_READABLE));
1225
1226   gtk_widget_class_install_style_property (widget_class,
1227                                            g_param_spec_boxed ("even-row-color",
1228                                                                P_("Even Row Color"),
1229                                                                P_("Color to use for even rows"),
1230                                                                GDK_TYPE_COLOR,
1231                                                                GTK_PARAM_READABLE));
1232
1233   gtk_widget_class_install_style_property (widget_class,
1234                                            g_param_spec_boxed ("odd-row-color",
1235                                                                P_("Odd Row Color"),
1236                                                                P_("Color to use for odd rows"),
1237                                                                GDK_TYPE_COLOR,
1238                                                                GTK_PARAM_READABLE));
1239
1240   gtk_widget_class_install_style_property (widget_class,
1241                                            g_param_spec_int ("grid-line-width",
1242                                                              P_("Grid line width"),
1243                                                              P_("Width, in pixels, of the tree view grid lines"),
1244                                                              0, G_MAXINT, 1,
1245                                                              GTK_PARAM_READABLE));
1246
1247   gtk_widget_class_install_style_property (widget_class,
1248                                            g_param_spec_int ("tree-line-width",
1249                                                              P_("Tree line width"),
1250                                                              P_("Width, in pixels, of the tree view lines"),
1251                                                              0, G_MAXINT, 1,
1252                                                              GTK_PARAM_READABLE));
1253
1254   gtk_widget_class_install_style_property (widget_class,
1255                                            g_param_spec_string ("grid-line-pattern",
1256                                                                 P_("Grid line pattern"),
1257                                                                 P_("Dash pattern used to draw the tree view grid lines"),
1258                                                                 "\1\1",
1259                                                                 GTK_PARAM_READABLE));
1260
1261   gtk_widget_class_install_style_property (widget_class,
1262                                            g_param_spec_string ("tree-line-pattern",
1263                                                                 P_("Tree line pattern"),
1264                                                                 P_("Dash pattern used to draw the tree view lines"),
1265                                                                 "\1\1",
1266                                                                 GTK_PARAM_READABLE));
1267
1268   /* Signals */
1269   /**
1270    * GtkTreeView::row-activated:
1271    * @tree_view: the object on which the signal is emitted
1272    * @path: the #GtkTreePath for the activated row
1273    * @column: the #GtkTreeViewColumn in which the activation occurred
1274    *
1275    * The "row-activated" signal is emitted when the method
1276    * gtk_tree_view_row_activated() is called or the user double clicks
1277    * a treeview row. It is also emitted when a non-editable row is
1278    * selected and one of the keys: Space, Shift+Space, Return or
1279    * Enter is pressed.
1280    *
1281    * For selection handling refer to the <link linkend="TreeWidget">tree
1282    * widget conceptual overview</link> as well as #GtkTreeSelection.
1283    */
1284   tree_view_signals[ROW_ACTIVATED] =
1285     g_signal_new (I_("row-activated"),
1286                   G_TYPE_FROM_CLASS (o_class),
1287                   G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
1288                   G_STRUCT_OFFSET (GtkTreeViewClass, row_activated),
1289                   NULL, NULL,
1290                   _gtk_marshal_VOID__BOXED_OBJECT,
1291                   G_TYPE_NONE, 2,
1292                   GTK_TYPE_TREE_PATH,
1293                   GTK_TYPE_TREE_VIEW_COLUMN);
1294
1295   /**
1296    * GtkTreeView::test-expand-row:
1297    * @tree_view: the object on which the signal is emitted
1298    * @iter: the tree iter of the row to expand
1299    * @path: a tree path that points to the row
1300    *
1301    * The given row is about to be expanded (show its children nodes). Use this
1302    * signal if you need to control the expandability of individual rows.
1303    *
1304    * Returns: %FALSE to allow expansion, %TRUE to reject
1305    */
1306   tree_view_signals[TEST_EXPAND_ROW] =
1307     g_signal_new (I_("test-expand-row"),
1308                   G_TYPE_FROM_CLASS (o_class),
1309                   G_SIGNAL_RUN_LAST,
1310                   G_STRUCT_OFFSET (GtkTreeViewClass, test_expand_row),
1311                   _gtk_boolean_handled_accumulator, NULL,
1312                   _gtk_marshal_BOOLEAN__BOXED_BOXED,
1313                   G_TYPE_BOOLEAN, 2,
1314                   GTK_TYPE_TREE_ITER,
1315                   GTK_TYPE_TREE_PATH);
1316
1317   /**
1318    * GtkTreeView::test-collapse-row:
1319    * @tree_view: the object on which the signal is emitted
1320    * @iter: the tree iter of the row to collapse
1321    * @path: a tree path that points to the row
1322    *
1323    * The given row is about to be collapsed (hide its children nodes). Use this
1324    * signal if you need to control the collapsibility of individual rows.
1325    *
1326    * Returns: %FALSE to allow collapsing, %TRUE to reject
1327    */
1328   tree_view_signals[TEST_COLLAPSE_ROW] =
1329     g_signal_new (I_("test-collapse-row"),
1330                   G_TYPE_FROM_CLASS (o_class),
1331                   G_SIGNAL_RUN_LAST,
1332                   G_STRUCT_OFFSET (GtkTreeViewClass, test_collapse_row),
1333                   _gtk_boolean_handled_accumulator, NULL,
1334                   _gtk_marshal_BOOLEAN__BOXED_BOXED,
1335                   G_TYPE_BOOLEAN, 2,
1336                   GTK_TYPE_TREE_ITER,
1337                   GTK_TYPE_TREE_PATH);
1338
1339   /**
1340    * GtkTreeView::row-expanded:
1341    * @tree_view: the object on which the signal is emitted
1342    * @iter: the tree iter of the expanded row
1343    * @path: a tree path that points to the row
1344    *
1345    * The given row has been expanded (child nodes are shown).
1346    */
1347   tree_view_signals[ROW_EXPANDED] =
1348     g_signal_new (I_("row-expanded"),
1349                   G_TYPE_FROM_CLASS (o_class),
1350                   G_SIGNAL_RUN_LAST,
1351                   G_STRUCT_OFFSET (GtkTreeViewClass, row_expanded),
1352                   NULL, NULL,
1353                   _gtk_marshal_VOID__BOXED_BOXED,
1354                   G_TYPE_NONE, 2,
1355                   GTK_TYPE_TREE_ITER,
1356                   GTK_TYPE_TREE_PATH);
1357
1358   /**
1359    * GtkTreeView::row-collapsed:
1360    * @tree_view: the object on which the signal is emitted
1361    * @iter: the tree iter of the collapsed row
1362    * @path: a tree path that points to the row
1363    *
1364    * The given row has been collapsed (child nodes are hidden).
1365    */
1366   tree_view_signals[ROW_COLLAPSED] =
1367     g_signal_new (I_("row-collapsed"),
1368                   G_TYPE_FROM_CLASS (o_class),
1369                   G_SIGNAL_RUN_LAST,
1370                   G_STRUCT_OFFSET (GtkTreeViewClass, row_collapsed),
1371                   NULL, NULL,
1372                   _gtk_marshal_VOID__BOXED_BOXED,
1373                   G_TYPE_NONE, 2,
1374                   GTK_TYPE_TREE_ITER,
1375                   GTK_TYPE_TREE_PATH);
1376
1377   /**
1378    * GtkTreeView::columns-changed:
1379    * @tree_view: the object on which the signal is emitted
1380    *
1381    * The number of columns of the treeview has changed.
1382    */
1383   tree_view_signals[COLUMNS_CHANGED] =
1384     g_signal_new (I_("columns-changed"),
1385                   G_TYPE_FROM_CLASS (o_class),
1386                   G_SIGNAL_RUN_LAST,
1387                   G_STRUCT_OFFSET (GtkTreeViewClass, columns_changed),
1388                   NULL, NULL,
1389                   _gtk_marshal_VOID__VOID,
1390                   G_TYPE_NONE, 0);
1391
1392   /**
1393    * GtkTreeView::cursor-changed:
1394    * @tree_view: the object on which the signal is emitted
1395    *
1396    * The position of the cursor (focused cell) has changed.
1397    */
1398   tree_view_signals[CURSOR_CHANGED] =
1399     g_signal_new (I_("cursor-changed"),
1400                   G_TYPE_FROM_CLASS (o_class),
1401                   G_SIGNAL_RUN_LAST,
1402                   G_STRUCT_OFFSET (GtkTreeViewClass, cursor_changed),
1403                   NULL, NULL,
1404                   _gtk_marshal_VOID__VOID,
1405                   G_TYPE_NONE, 0);
1406
1407   tree_view_signals[MOVE_CURSOR] =
1408     g_signal_new (I_("move-cursor"),
1409                   G_TYPE_FROM_CLASS (o_class),
1410                   G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
1411                   G_STRUCT_OFFSET (GtkTreeViewClass, move_cursor),
1412                   NULL, NULL,
1413                   _gtk_marshal_BOOLEAN__ENUM_INT,
1414                   G_TYPE_BOOLEAN, 2,
1415                   GTK_TYPE_MOVEMENT_STEP,
1416                   G_TYPE_INT);
1417
1418   tree_view_signals[SELECT_ALL] =
1419     g_signal_new (I_("select-all"),
1420                   G_TYPE_FROM_CLASS (o_class),
1421                   G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
1422                   G_STRUCT_OFFSET (GtkTreeViewClass, select_all),
1423                   NULL, NULL,
1424                   _gtk_marshal_BOOLEAN__VOID,
1425                   G_TYPE_BOOLEAN, 0);
1426
1427   tree_view_signals[UNSELECT_ALL] =
1428     g_signal_new (I_("unselect-all"),
1429                   G_TYPE_FROM_CLASS (o_class),
1430                   G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
1431                   G_STRUCT_OFFSET (GtkTreeViewClass, unselect_all),
1432                   NULL, NULL,
1433                   _gtk_marshal_BOOLEAN__VOID,
1434                   G_TYPE_BOOLEAN, 0);
1435
1436   tree_view_signals[SELECT_CURSOR_ROW] =
1437     g_signal_new (I_("select-cursor-row"),
1438                   G_TYPE_FROM_CLASS (o_class),
1439                   G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
1440                   G_STRUCT_OFFSET (GtkTreeViewClass, select_cursor_row),
1441                   NULL, NULL,
1442                   _gtk_marshal_BOOLEAN__BOOLEAN,
1443                   G_TYPE_BOOLEAN, 1,
1444                   G_TYPE_BOOLEAN);
1445
1446   tree_view_signals[TOGGLE_CURSOR_ROW] =
1447     g_signal_new (I_("toggle-cursor-row"),
1448                   G_TYPE_FROM_CLASS (o_class),
1449                   G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
1450                   G_STRUCT_OFFSET (GtkTreeViewClass, toggle_cursor_row),
1451                   NULL, NULL,
1452                   _gtk_marshal_BOOLEAN__VOID,
1453                   G_TYPE_BOOLEAN, 0);
1454
1455   tree_view_signals[EXPAND_COLLAPSE_CURSOR_ROW] =
1456     g_signal_new (I_("expand-collapse-cursor-row"),
1457                   G_TYPE_FROM_CLASS (o_class),
1458                   G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
1459                   G_STRUCT_OFFSET (GtkTreeViewClass, expand_collapse_cursor_row),
1460                   NULL, NULL,
1461                   _gtk_marshal_BOOLEAN__BOOLEAN_BOOLEAN_BOOLEAN,
1462                   G_TYPE_BOOLEAN, 3,
1463                   G_TYPE_BOOLEAN,
1464                   G_TYPE_BOOLEAN,
1465                   G_TYPE_BOOLEAN);
1466
1467   tree_view_signals[SELECT_CURSOR_PARENT] =
1468     g_signal_new (I_("select-cursor-parent"),
1469                   G_TYPE_FROM_CLASS (o_class),
1470                   G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
1471                   G_STRUCT_OFFSET (GtkTreeViewClass, select_cursor_parent),
1472                   NULL, NULL,
1473                   _gtk_marshal_BOOLEAN__VOID,
1474                   G_TYPE_BOOLEAN, 0);
1475
1476   tree_view_signals[START_INTERACTIVE_SEARCH] =
1477     g_signal_new (I_("start-interactive-search"),
1478                   G_TYPE_FROM_CLASS (o_class),
1479                   G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
1480                   G_STRUCT_OFFSET (GtkTreeViewClass, start_interactive_search),
1481                   NULL, NULL,
1482                   _gtk_marshal_BOOLEAN__VOID,
1483                   G_TYPE_BOOLEAN, 0);
1484
1485   /* Key bindings */
1486   gtk_tree_view_add_move_binding (binding_set, GDK_KEY_Up, 0, TRUE,
1487                                   GTK_MOVEMENT_DISPLAY_LINES, -1);
1488   gtk_tree_view_add_move_binding (binding_set, GDK_KEY_KP_Up, 0, TRUE,
1489                                   GTK_MOVEMENT_DISPLAY_LINES, -1);
1490
1491   gtk_tree_view_add_move_binding (binding_set, GDK_KEY_Down, 0, TRUE,
1492                                   GTK_MOVEMENT_DISPLAY_LINES, 1);
1493   gtk_tree_view_add_move_binding (binding_set, GDK_KEY_KP_Down, 0, TRUE,
1494                                   GTK_MOVEMENT_DISPLAY_LINES, 1);
1495
1496   gtk_tree_view_add_move_binding (binding_set, GDK_KEY_p, GDK_CONTROL_MASK, FALSE,
1497                                   GTK_MOVEMENT_DISPLAY_LINES, -1);
1498
1499   gtk_tree_view_add_move_binding (binding_set, GDK_KEY_n, GDK_CONTROL_MASK, FALSE,
1500                                   GTK_MOVEMENT_DISPLAY_LINES, 1);
1501
1502   gtk_tree_view_add_move_binding (binding_set, GDK_KEY_Home, 0, TRUE,
1503                                   GTK_MOVEMENT_BUFFER_ENDS, -1);
1504   gtk_tree_view_add_move_binding (binding_set, GDK_KEY_KP_Home, 0, TRUE,
1505                                   GTK_MOVEMENT_BUFFER_ENDS, -1);
1506
1507   gtk_tree_view_add_move_binding (binding_set, GDK_KEY_End, 0, TRUE,
1508                                   GTK_MOVEMENT_BUFFER_ENDS, 1);
1509   gtk_tree_view_add_move_binding (binding_set, GDK_KEY_KP_End, 0, TRUE,
1510                                   GTK_MOVEMENT_BUFFER_ENDS, 1);
1511
1512   gtk_tree_view_add_move_binding (binding_set, GDK_KEY_Page_Up, 0, TRUE,
1513                                   GTK_MOVEMENT_PAGES, -1);
1514   gtk_tree_view_add_move_binding (binding_set, GDK_KEY_KP_Page_Up, 0, TRUE,
1515                                   GTK_MOVEMENT_PAGES, -1);
1516
1517   gtk_tree_view_add_move_binding (binding_set, GDK_KEY_Page_Down, 0, TRUE,
1518                                   GTK_MOVEMENT_PAGES, 1);
1519   gtk_tree_view_add_move_binding (binding_set, GDK_KEY_KP_Page_Down, 0, TRUE,
1520                                   GTK_MOVEMENT_PAGES, 1);
1521
1522
1523   gtk_binding_entry_add_signal (binding_set, GDK_KEY_Right, 0, "move-cursor", 2,
1524                                 G_TYPE_ENUM, GTK_MOVEMENT_VISUAL_POSITIONS,
1525                                 G_TYPE_INT, 1);
1526
1527   gtk_binding_entry_add_signal (binding_set, GDK_KEY_Left, 0, "move-cursor", 2,
1528                                 G_TYPE_ENUM, GTK_MOVEMENT_VISUAL_POSITIONS,
1529                                 G_TYPE_INT, -1);
1530
1531   gtk_binding_entry_add_signal (binding_set, GDK_KEY_KP_Right, 0, "move-cursor", 2,
1532                                 G_TYPE_ENUM, GTK_MOVEMENT_VISUAL_POSITIONS,
1533                                 G_TYPE_INT, 1);
1534
1535   gtk_binding_entry_add_signal (binding_set, GDK_KEY_KP_Left, 0, "move-cursor", 2,
1536                                 G_TYPE_ENUM, GTK_MOVEMENT_VISUAL_POSITIONS,
1537                                 G_TYPE_INT, -1);
1538
1539   gtk_binding_entry_add_signal (binding_set, GDK_KEY_Right, GDK_CONTROL_MASK,
1540                                 "move-cursor", 2,
1541                                 G_TYPE_ENUM, GTK_MOVEMENT_VISUAL_POSITIONS,
1542                                 G_TYPE_INT, 1);
1543
1544   gtk_binding_entry_add_signal (binding_set, GDK_KEY_Left, GDK_CONTROL_MASK,
1545                                 "move-cursor", 2,
1546                                 G_TYPE_ENUM, GTK_MOVEMENT_VISUAL_POSITIONS,
1547                                 G_TYPE_INT, -1);
1548
1549   gtk_binding_entry_add_signal (binding_set, GDK_KEY_KP_Right, GDK_CONTROL_MASK,
1550                                 "move-cursor", 2,
1551                                 G_TYPE_ENUM, GTK_MOVEMENT_VISUAL_POSITIONS,
1552                                 G_TYPE_INT, 1);
1553
1554   gtk_binding_entry_add_signal (binding_set, GDK_KEY_KP_Left, GDK_CONTROL_MASK,
1555                                 "move-cursor", 2,
1556                                 G_TYPE_ENUM, GTK_MOVEMENT_VISUAL_POSITIONS,
1557                                 G_TYPE_INT, -1);
1558
1559   gtk_binding_entry_add_signal (binding_set, GDK_KEY_space, GDK_CONTROL_MASK, "toggle-cursor-row", 0);
1560   gtk_binding_entry_add_signal (binding_set, GDK_KEY_KP_Space, GDK_CONTROL_MASK, "toggle-cursor-row", 0);
1561
1562   gtk_binding_entry_add_signal (binding_set, GDK_KEY_a, GDK_CONTROL_MASK, "select-all", 0);
1563   gtk_binding_entry_add_signal (binding_set, GDK_KEY_slash, GDK_CONTROL_MASK, "select-all", 0);
1564
1565   gtk_binding_entry_add_signal (binding_set, GDK_KEY_A, GDK_CONTROL_MASK | GDK_SHIFT_MASK, "unselect-all", 0);
1566   gtk_binding_entry_add_signal (binding_set, GDK_KEY_backslash, GDK_CONTROL_MASK, "unselect-all", 0);
1567
1568   gtk_binding_entry_add_signal (binding_set, GDK_KEY_space, GDK_SHIFT_MASK, "select-cursor-row", 1,
1569                                 G_TYPE_BOOLEAN, TRUE);
1570   gtk_binding_entry_add_signal (binding_set, GDK_KEY_KP_Space, GDK_SHIFT_MASK, "select-cursor-row", 1,
1571                                 G_TYPE_BOOLEAN, TRUE);
1572
1573   gtk_binding_entry_add_signal (binding_set, GDK_KEY_space, 0, "select-cursor-row", 1,
1574                                 G_TYPE_BOOLEAN, TRUE);
1575   gtk_binding_entry_add_signal (binding_set, GDK_KEY_KP_Space, 0, "select-cursor-row", 1,
1576                                 G_TYPE_BOOLEAN, TRUE);
1577   gtk_binding_entry_add_signal (binding_set, GDK_KEY_Return, 0, "select-cursor-row", 1,
1578                                 G_TYPE_BOOLEAN, TRUE);
1579   gtk_binding_entry_add_signal (binding_set, GDK_KEY_ISO_Enter, 0, "select-cursor-row", 1,
1580                                 G_TYPE_BOOLEAN, TRUE);
1581   gtk_binding_entry_add_signal (binding_set, GDK_KEY_KP_Enter, 0, "select-cursor-row", 1,
1582                                 G_TYPE_BOOLEAN, TRUE);
1583
1584   /* expand and collapse rows */
1585   gtk_binding_entry_add_signal (binding_set, GDK_KEY_plus, 0, "expand-collapse-cursor-row", 3,
1586                                 G_TYPE_BOOLEAN, TRUE,
1587                                 G_TYPE_BOOLEAN, TRUE,
1588                                 G_TYPE_BOOLEAN, FALSE);
1589
1590   gtk_binding_entry_add_signal (binding_set, GDK_KEY_asterisk, 0,
1591                                 "expand-collapse-cursor-row", 3,
1592                                 G_TYPE_BOOLEAN, TRUE,
1593                                 G_TYPE_BOOLEAN, TRUE,
1594                                 G_TYPE_BOOLEAN, TRUE);
1595   gtk_binding_entry_add_signal (binding_set, GDK_KEY_KP_Multiply, 0,
1596                                 "expand-collapse-cursor-row", 3,
1597                                 G_TYPE_BOOLEAN, TRUE,
1598                                 G_TYPE_BOOLEAN, TRUE,
1599                                 G_TYPE_BOOLEAN, TRUE);
1600
1601   gtk_binding_entry_add_signal (binding_set, GDK_KEY_slash, 0,
1602                                 "expand-collapse-cursor-row", 3,
1603                                 G_TYPE_BOOLEAN, TRUE,
1604                                 G_TYPE_BOOLEAN, FALSE,
1605                                 G_TYPE_BOOLEAN, FALSE);
1606   gtk_binding_entry_add_signal (binding_set, GDK_KEY_KP_Divide, 0,
1607                                 "expand-collapse-cursor-row", 3,
1608                                 G_TYPE_BOOLEAN, TRUE,
1609                                 G_TYPE_BOOLEAN, FALSE,
1610                                 G_TYPE_BOOLEAN, FALSE);
1611
1612   /* Not doable on US keyboards */
1613   gtk_binding_entry_add_signal (binding_set, GDK_KEY_plus, GDK_SHIFT_MASK, "expand-collapse-cursor-row", 3,
1614                                 G_TYPE_BOOLEAN, TRUE,
1615                                 G_TYPE_BOOLEAN, TRUE,
1616                                 G_TYPE_BOOLEAN, TRUE);
1617   gtk_binding_entry_add_signal (binding_set, GDK_KEY_KP_Add, 0, "expand-collapse-cursor-row", 3,
1618                                 G_TYPE_BOOLEAN, TRUE,
1619                                 G_TYPE_BOOLEAN, TRUE,
1620                                 G_TYPE_BOOLEAN, FALSE);
1621   gtk_binding_entry_add_signal (binding_set, GDK_KEY_KP_Add, GDK_SHIFT_MASK, "expand-collapse-cursor-row", 3,
1622                                 G_TYPE_BOOLEAN, TRUE,
1623                                 G_TYPE_BOOLEAN, TRUE,
1624                                 G_TYPE_BOOLEAN, TRUE);
1625   gtk_binding_entry_add_signal (binding_set, GDK_KEY_KP_Add, GDK_SHIFT_MASK, "expand-collapse-cursor-row", 3,
1626                                 G_TYPE_BOOLEAN, TRUE,
1627                                 G_TYPE_BOOLEAN, TRUE,
1628                                 G_TYPE_BOOLEAN, TRUE);
1629   gtk_binding_entry_add_signal (binding_set, GDK_KEY_Right, GDK_SHIFT_MASK,
1630                                 "expand-collapse-cursor-row", 3,
1631                                 G_TYPE_BOOLEAN, FALSE,
1632                                 G_TYPE_BOOLEAN, TRUE,
1633                                 G_TYPE_BOOLEAN, TRUE);
1634   gtk_binding_entry_add_signal (binding_set, GDK_KEY_KP_Right, GDK_SHIFT_MASK,
1635                                 "expand-collapse-cursor-row", 3,
1636                                 G_TYPE_BOOLEAN, FALSE,
1637                                 G_TYPE_BOOLEAN, TRUE,
1638                                 G_TYPE_BOOLEAN, TRUE);
1639   gtk_binding_entry_add_signal (binding_set, GDK_KEY_Right,
1640                                 GDK_CONTROL_MASK | GDK_SHIFT_MASK,
1641                                 "expand-collapse-cursor-row", 3,
1642                                 G_TYPE_BOOLEAN, FALSE,
1643                                 G_TYPE_BOOLEAN, TRUE,
1644                                 G_TYPE_BOOLEAN, TRUE);
1645   gtk_binding_entry_add_signal (binding_set, GDK_KEY_KP_Right,
1646                                 GDK_CONTROL_MASK | GDK_SHIFT_MASK,
1647                                 "expand-collapse-cursor-row", 3,
1648                                 G_TYPE_BOOLEAN, FALSE,
1649                                 G_TYPE_BOOLEAN, TRUE,
1650                                 G_TYPE_BOOLEAN, TRUE);
1651
1652   gtk_binding_entry_add_signal (binding_set, GDK_KEY_minus, 0, "expand-collapse-cursor-row", 3,
1653                                 G_TYPE_BOOLEAN, TRUE,
1654                                 G_TYPE_BOOLEAN, FALSE,
1655                                 G_TYPE_BOOLEAN, FALSE);
1656   gtk_binding_entry_add_signal (binding_set, GDK_KEY_minus, GDK_SHIFT_MASK, "expand-collapse-cursor-row", 3,
1657                                 G_TYPE_BOOLEAN, TRUE,
1658                                 G_TYPE_BOOLEAN, FALSE,
1659                                 G_TYPE_BOOLEAN, TRUE);
1660   gtk_binding_entry_add_signal (binding_set, GDK_KEY_KP_Subtract, 0, "expand-collapse-cursor-row", 3,
1661                                 G_TYPE_BOOLEAN, TRUE,
1662                                 G_TYPE_BOOLEAN, FALSE,
1663                                 G_TYPE_BOOLEAN, FALSE);
1664   gtk_binding_entry_add_signal (binding_set, GDK_KEY_KP_Subtract, GDK_SHIFT_MASK, "expand-collapse-cursor-row", 3,
1665                                 G_TYPE_BOOLEAN, TRUE,
1666                                 G_TYPE_BOOLEAN, FALSE,
1667                                 G_TYPE_BOOLEAN, TRUE);
1668   gtk_binding_entry_add_signal (binding_set, GDK_KEY_Left, GDK_SHIFT_MASK,
1669                                 "expand-collapse-cursor-row", 3,
1670                                 G_TYPE_BOOLEAN, FALSE,
1671                                 G_TYPE_BOOLEAN, FALSE,
1672                                 G_TYPE_BOOLEAN, TRUE);
1673   gtk_binding_entry_add_signal (binding_set, GDK_KEY_KP_Left, GDK_SHIFT_MASK,
1674                                 "expand-collapse-cursor-row", 3,
1675                                 G_TYPE_BOOLEAN, FALSE,
1676                                 G_TYPE_BOOLEAN, FALSE,
1677                                 G_TYPE_BOOLEAN, TRUE);
1678   gtk_binding_entry_add_signal (binding_set, GDK_KEY_Left,
1679                                 GDK_CONTROL_MASK | GDK_SHIFT_MASK,
1680                                 "expand-collapse-cursor-row", 3,
1681                                 G_TYPE_BOOLEAN, FALSE,
1682                                 G_TYPE_BOOLEAN, FALSE,
1683                                 G_TYPE_BOOLEAN, TRUE);
1684   gtk_binding_entry_add_signal (binding_set, GDK_KEY_KP_Left,
1685                                 GDK_CONTROL_MASK | GDK_SHIFT_MASK,
1686                                 "expand-collapse-cursor-row", 3,
1687                                 G_TYPE_BOOLEAN, FALSE,
1688                                 G_TYPE_BOOLEAN, FALSE,
1689                                 G_TYPE_BOOLEAN, TRUE);
1690
1691   gtk_binding_entry_add_signal (binding_set, GDK_KEY_BackSpace, 0, "select-cursor-parent", 0);
1692   gtk_binding_entry_add_signal (binding_set, GDK_KEY_BackSpace, GDK_CONTROL_MASK, "select-cursor-parent", 0);
1693
1694   gtk_binding_entry_add_signal (binding_set, GDK_KEY_f, GDK_CONTROL_MASK, "start-interactive-search", 0);
1695
1696   gtk_binding_entry_add_signal (binding_set, GDK_KEY_F, GDK_CONTROL_MASK, "start-interactive-search", 0);
1697
1698   g_type_class_add_private (o_class, sizeof (GtkTreeViewPrivate));
1699
1700   gtk_widget_class_set_accessible_type (widget_class, GTK_TYPE_TREE_VIEW_ACCESSIBLE);
1701 }
1702
1703 static void
1704 gtk_tree_view_init (GtkTreeView *tree_view)
1705 {
1706   tree_view->priv = G_TYPE_INSTANCE_GET_PRIVATE (tree_view, GTK_TYPE_TREE_VIEW, GtkTreeViewPrivate);
1707
1708   gtk_widget_set_can_focus (GTK_WIDGET (tree_view), TRUE);
1709   gtk_widget_set_redraw_on_allocate (GTK_WIDGET (tree_view), FALSE);
1710
1711   tree_view->priv->show_expanders = TRUE;
1712   tree_view->priv->draw_keyfocus = TRUE;
1713   tree_view->priv->headers_visible = TRUE;
1714
1715   /* We need some padding */
1716   tree_view->priv->dy = 0;
1717   tree_view->priv->cursor_offset = 0;
1718   tree_view->priv->n_columns = 0;
1719   tree_view->priv->header_height = 1;
1720   tree_view->priv->x_drag = 0;
1721   tree_view->priv->drag_pos = -1;
1722   tree_view->priv->header_has_focus = FALSE;
1723   tree_view->priv->pressed_button = -1;
1724   tree_view->priv->press_start_x = -1;
1725   tree_view->priv->press_start_y = -1;
1726   tree_view->priv->reorderable = FALSE;
1727   tree_view->priv->presize_handler_timer = 0;
1728   tree_view->priv->scroll_sync_timer = 0;
1729   tree_view->priv->fixed_height = -1;
1730   tree_view->priv->fixed_height_mode = FALSE;
1731   tree_view->priv->fixed_height_check = 0;
1732   tree_view->priv->selection = _gtk_tree_selection_new_with_tree_view (tree_view);
1733   tree_view->priv->enable_search = TRUE;
1734   tree_view->priv->search_column = -1;
1735   tree_view->priv->search_position_func = gtk_tree_view_search_position_func;
1736   tree_view->priv->search_equal_func = gtk_tree_view_search_equal_func;
1737   tree_view->priv->search_custom_entry_set = FALSE;
1738   tree_view->priv->typeselect_flush_timeout = 0;
1739   tree_view->priv->init_hadjust_value = TRUE;
1740   tree_view->priv->width = 0;
1741
1742   tree_view->priv->hover_selection = FALSE;
1743   tree_view->priv->hover_expand = FALSE;
1744
1745   tree_view->priv->level_indentation = 0;
1746
1747   tree_view->priv->rubber_banding_enable = FALSE;
1748
1749   tree_view->priv->grid_lines = GTK_TREE_VIEW_GRID_LINES_NONE;
1750   tree_view->priv->tree_lines_enabled = FALSE;
1751
1752   tree_view->priv->tooltip_column = -1;
1753
1754   tree_view->priv->post_validation_flag = FALSE;
1755
1756   tree_view->priv->last_button_x = -1;
1757   tree_view->priv->last_button_y = -1;
1758
1759   tree_view->priv->event_last_x = -10000;
1760   tree_view->priv->event_last_y = -10000;
1761
1762   gtk_tree_view_do_set_vadjustment (tree_view, NULL);
1763   gtk_tree_view_do_set_hadjustment (tree_view, NULL);
1764 }
1765
1766 \f
1767
1768 /* GObject Methods
1769  */
1770
1771 static void
1772 gtk_tree_view_set_property (GObject         *object,
1773                             guint            prop_id,
1774                             const GValue    *value,
1775                             GParamSpec      *pspec)
1776 {
1777   GtkTreeView *tree_view;
1778
1779   tree_view = GTK_TREE_VIEW (object);
1780
1781   switch (prop_id)
1782     {
1783     case PROP_MODEL:
1784       gtk_tree_view_set_model (tree_view, g_value_get_object (value));
1785       break;
1786     case PROP_HADJUSTMENT:
1787       gtk_tree_view_do_set_hadjustment (tree_view, g_value_get_object (value));
1788       break;
1789     case PROP_VADJUSTMENT:
1790       gtk_tree_view_do_set_vadjustment (tree_view, g_value_get_object (value));
1791       break;
1792     case PROP_HSCROLL_POLICY:
1793       tree_view->priv->hscroll_policy = g_value_get_enum (value);
1794       gtk_widget_queue_resize (GTK_WIDGET (tree_view));
1795       break;
1796     case PROP_VSCROLL_POLICY:
1797       tree_view->priv->vscroll_policy = g_value_get_enum (value);
1798       gtk_widget_queue_resize (GTK_WIDGET (tree_view));
1799       break;
1800     case PROP_HEADERS_VISIBLE:
1801       gtk_tree_view_set_headers_visible (tree_view, g_value_get_boolean (value));
1802       break;
1803     case PROP_HEADERS_CLICKABLE:
1804       gtk_tree_view_set_headers_clickable (tree_view, g_value_get_boolean (value));
1805       break;
1806     case PROP_EXPANDER_COLUMN:
1807       gtk_tree_view_set_expander_column (tree_view, g_value_get_object (value));
1808       break;
1809     case PROP_REORDERABLE:
1810       gtk_tree_view_set_reorderable (tree_view, g_value_get_boolean (value));
1811       break;
1812     case PROP_RULES_HINT:
1813       gtk_tree_view_set_rules_hint (tree_view, g_value_get_boolean (value));
1814       break;
1815     case PROP_ENABLE_SEARCH:
1816       gtk_tree_view_set_enable_search (tree_view, g_value_get_boolean (value));
1817       break;
1818     case PROP_SEARCH_COLUMN:
1819       gtk_tree_view_set_search_column (tree_view, g_value_get_int (value));
1820       break;
1821     case PROP_FIXED_HEIGHT_MODE:
1822       gtk_tree_view_set_fixed_height_mode (tree_view, g_value_get_boolean (value));
1823       break;
1824     case PROP_HOVER_SELECTION:
1825       tree_view->priv->hover_selection = g_value_get_boolean (value);
1826       break;
1827     case PROP_HOVER_EXPAND:
1828       tree_view->priv->hover_expand = g_value_get_boolean (value);
1829       break;
1830     case PROP_SHOW_EXPANDERS:
1831       gtk_tree_view_set_show_expanders (tree_view, g_value_get_boolean (value));
1832       break;
1833     case PROP_LEVEL_INDENTATION:
1834       tree_view->priv->level_indentation = g_value_get_int (value);
1835       break;
1836     case PROP_RUBBER_BANDING:
1837       tree_view->priv->rubber_banding_enable = g_value_get_boolean (value);
1838       break;
1839     case PROP_ENABLE_GRID_LINES:
1840       gtk_tree_view_set_grid_lines (tree_view, g_value_get_enum (value));
1841       break;
1842     case PROP_ENABLE_TREE_LINES:
1843       gtk_tree_view_set_enable_tree_lines (tree_view, g_value_get_boolean (value));
1844       break;
1845     case PROP_TOOLTIP_COLUMN:
1846       gtk_tree_view_set_tooltip_column (tree_view, g_value_get_int (value));
1847       break;
1848     default:
1849       G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
1850       break;
1851     }
1852 }
1853
1854 static void
1855 gtk_tree_view_get_property (GObject    *object,
1856                             guint       prop_id,
1857                             GValue     *value,
1858                             GParamSpec *pspec)
1859 {
1860   GtkTreeView *tree_view;
1861
1862   tree_view = GTK_TREE_VIEW (object);
1863
1864   switch (prop_id)
1865     {
1866     case PROP_MODEL:
1867       g_value_set_object (value, tree_view->priv->model);
1868       break;
1869     case PROP_HADJUSTMENT:
1870       g_value_set_object (value, tree_view->priv->hadjustment);
1871       break;
1872     case PROP_VADJUSTMENT:
1873       g_value_set_object (value, tree_view->priv->vadjustment);
1874       break;
1875     case PROP_HSCROLL_POLICY:
1876       g_value_set_enum (value, tree_view->priv->hscroll_policy);
1877       break;
1878     case PROP_VSCROLL_POLICY:
1879       g_value_set_enum (value, tree_view->priv->vscroll_policy);
1880       break;
1881     case PROP_HEADERS_VISIBLE:
1882       g_value_set_boolean (value, gtk_tree_view_get_headers_visible (tree_view));
1883       break;
1884     case PROP_HEADERS_CLICKABLE:
1885       g_value_set_boolean (value, gtk_tree_view_get_headers_clickable (tree_view));
1886       break;
1887     case PROP_EXPANDER_COLUMN:
1888       g_value_set_object (value, tree_view->priv->expander_column);
1889       break;
1890     case PROP_REORDERABLE:
1891       g_value_set_boolean (value, tree_view->priv->reorderable);
1892       break;
1893     case PROP_RULES_HINT:
1894       g_value_set_boolean (value, tree_view->priv->has_rules);
1895       break;
1896     case PROP_ENABLE_SEARCH:
1897       g_value_set_boolean (value, tree_view->priv->enable_search);
1898       break;
1899     case PROP_SEARCH_COLUMN:
1900       g_value_set_int (value, tree_view->priv->search_column);
1901       break;
1902     case PROP_FIXED_HEIGHT_MODE:
1903       g_value_set_boolean (value, tree_view->priv->fixed_height_mode);
1904       break;
1905     case PROP_HOVER_SELECTION:
1906       g_value_set_boolean (value, tree_view->priv->hover_selection);
1907       break;
1908     case PROP_HOVER_EXPAND:
1909       g_value_set_boolean (value, tree_view->priv->hover_expand);
1910       break;
1911     case PROP_SHOW_EXPANDERS:
1912       g_value_set_boolean (value, tree_view->priv->show_expanders);
1913       break;
1914     case PROP_LEVEL_INDENTATION:
1915       g_value_set_int (value, tree_view->priv->level_indentation);
1916       break;
1917     case PROP_RUBBER_BANDING:
1918       g_value_set_boolean (value, tree_view->priv->rubber_banding_enable);
1919       break;
1920     case PROP_ENABLE_GRID_LINES:
1921       g_value_set_enum (value, tree_view->priv->grid_lines);
1922       break;
1923     case PROP_ENABLE_TREE_LINES:
1924       g_value_set_boolean (value, tree_view->priv->tree_lines_enabled);
1925       break;
1926     case PROP_TOOLTIP_COLUMN:
1927       g_value_set_int (value, tree_view->priv->tooltip_column);
1928       break;
1929     default:
1930       G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
1931       break;
1932     }
1933 }
1934
1935 static void
1936 gtk_tree_view_finalize (GObject *object)
1937 {
1938   G_OBJECT_CLASS (gtk_tree_view_parent_class)->finalize (object);
1939 }
1940
1941
1942 static GtkBuildableIface *parent_buildable_iface;
1943
1944 static void
1945 gtk_tree_view_buildable_init (GtkBuildableIface *iface)
1946 {
1947   parent_buildable_iface = g_type_interface_peek_parent (iface);
1948   iface->add_child = gtk_tree_view_buildable_add_child;
1949   iface->get_internal_child = gtk_tree_view_buildable_get_internal_child;
1950 }
1951
1952 static void
1953 gtk_tree_view_buildable_add_child (GtkBuildable *tree_view,
1954                                    GtkBuilder  *builder,
1955                                    GObject     *child,
1956                                    const gchar *type)
1957 {
1958   gtk_tree_view_append_column (GTK_TREE_VIEW (tree_view), GTK_TREE_VIEW_COLUMN (child));
1959 }
1960
1961 static GObject *
1962 gtk_tree_view_buildable_get_internal_child (GtkBuildable      *buildable,
1963                                             GtkBuilder        *builder,
1964                                             const gchar       *childname)
1965 {
1966     if (strcmp (childname, "selection") == 0)
1967       return G_OBJECT (GTK_TREE_VIEW (buildable)->priv->selection);
1968
1969     return parent_buildable_iface->get_internal_child (buildable,
1970                                                        builder,
1971                                                        childname);
1972 }
1973
1974 /* GtkWidget Methods
1975  */
1976
1977 static void
1978 gtk_tree_view_free_rbtree (GtkTreeView *tree_view)
1979 {
1980   _gtk_rbtree_free (tree_view->priv->tree);
1981
1982   tree_view->priv->tree = NULL;
1983   tree_view->priv->button_pressed_node = NULL;
1984   tree_view->priv->button_pressed_tree = NULL;
1985   tree_view->priv->prelight_tree = NULL;
1986   tree_view->priv->prelight_node = NULL;
1987   tree_view->priv->expanded_collapsed_node = NULL;
1988   tree_view->priv->expanded_collapsed_tree = NULL;
1989 }
1990
1991 static void
1992 gtk_tree_view_destroy (GtkWidget *widget)
1993 {
1994   GtkTreeView *tree_view = GTK_TREE_VIEW (widget);
1995   GList *list;
1996
1997   gtk_tree_view_stop_editing (tree_view, TRUE);
1998
1999   if (tree_view->priv->columns != NULL)
2000     {
2001       list = tree_view->priv->columns;
2002       while (list)
2003         {
2004           GtkTreeViewColumn *column;
2005           column = GTK_TREE_VIEW_COLUMN (list->data);
2006           list = list->next;
2007           gtk_tree_view_remove_column (tree_view, column);
2008         }
2009       tree_view->priv->columns = NULL;
2010     }
2011
2012   if (tree_view->priv->tree != NULL)
2013     {
2014       gtk_tree_view_unref_and_check_selection_tree (tree_view, tree_view->priv->tree);
2015
2016       gtk_tree_view_free_rbtree (tree_view);
2017     }
2018
2019   if (tree_view->priv->selection != NULL)
2020     {
2021       _gtk_tree_selection_set_tree_view (tree_view->priv->selection, NULL);
2022       g_object_unref (tree_view->priv->selection);
2023       tree_view->priv->selection = NULL;
2024     }
2025
2026   if (tree_view->priv->scroll_to_path != NULL)
2027     {
2028       gtk_tree_row_reference_free (tree_view->priv->scroll_to_path);
2029       tree_view->priv->scroll_to_path = NULL;
2030     }
2031
2032   if (tree_view->priv->drag_dest_row != NULL)
2033     {
2034       gtk_tree_row_reference_free (tree_view->priv->drag_dest_row);
2035       tree_view->priv->drag_dest_row = NULL;
2036     }
2037
2038   if (tree_view->priv->top_row != NULL)
2039     {
2040       gtk_tree_row_reference_free (tree_view->priv->top_row);
2041       tree_view->priv->top_row = NULL;
2042     }
2043
2044   if (tree_view->priv->column_drop_func_data &&
2045       tree_view->priv->column_drop_func_data_destroy)
2046     {
2047       tree_view->priv->column_drop_func_data_destroy (tree_view->priv->column_drop_func_data);
2048       tree_view->priv->column_drop_func_data = NULL;
2049     }
2050
2051   if (tree_view->priv->destroy_count_destroy &&
2052       tree_view->priv->destroy_count_data)
2053     {
2054       tree_view->priv->destroy_count_destroy (tree_view->priv->destroy_count_data);
2055       tree_view->priv->destroy_count_data = NULL;
2056     }
2057
2058   gtk_tree_row_reference_free (tree_view->priv->cursor);
2059   tree_view->priv->cursor = NULL;
2060
2061   gtk_tree_row_reference_free (tree_view->priv->anchor);
2062   tree_view->priv->anchor = NULL;
2063
2064   /* destroy interactive search dialog */
2065   if (tree_view->priv->search_window)
2066     {
2067       gtk_widget_destroy (tree_view->priv->search_window);
2068       tree_view->priv->search_window = NULL;
2069       tree_view->priv->search_entry = NULL;
2070       if (tree_view->priv->typeselect_flush_timeout)
2071         {
2072           g_source_remove (tree_view->priv->typeselect_flush_timeout);
2073           tree_view->priv->typeselect_flush_timeout = 0;
2074         }
2075     }
2076
2077   if (tree_view->priv->search_destroy && tree_view->priv->search_user_data)
2078     {
2079       tree_view->priv->search_destroy (tree_view->priv->search_user_data);
2080       tree_view->priv->search_user_data = NULL;
2081     }
2082
2083   if (tree_view->priv->search_position_destroy && tree_view->priv->search_position_user_data)
2084     {
2085       tree_view->priv->search_position_destroy (tree_view->priv->search_position_user_data);
2086       tree_view->priv->search_position_user_data = NULL;
2087     }
2088
2089   if (tree_view->priv->row_separator_destroy && tree_view->priv->row_separator_data)
2090     {
2091       tree_view->priv->row_separator_destroy (tree_view->priv->row_separator_data);
2092       tree_view->priv->row_separator_data = NULL;
2093     }
2094
2095   gtk_tree_view_set_model (tree_view, NULL);
2096
2097   if (tree_view->priv->hadjustment)
2098     {
2099       g_object_unref (tree_view->priv->hadjustment);
2100       tree_view->priv->hadjustment = NULL;
2101     }
2102   if (tree_view->priv->vadjustment)
2103     {
2104       g_object_unref (tree_view->priv->vadjustment);
2105       tree_view->priv->vadjustment = NULL;
2106     }
2107
2108   GTK_WIDGET_CLASS (gtk_tree_view_parent_class)->destroy (widget);
2109 }
2110
2111 /* GtkWidget::map helper */
2112 static void
2113 gtk_tree_view_map_buttons (GtkTreeView *tree_view)
2114 {
2115   GList *list;
2116
2117   g_return_if_fail (gtk_widget_get_mapped (GTK_WIDGET (tree_view)));
2118
2119   if (tree_view->priv->headers_visible)
2120     {
2121       GtkTreeViewColumn *column;
2122       GtkWidget         *button;
2123       GdkWindow         *window;
2124
2125       for (list = tree_view->priv->columns; list; list = list->next)
2126         {
2127           column = list->data;
2128           button = gtk_tree_view_column_get_button (column);
2129
2130           if (gtk_tree_view_column_get_visible (column) && button)
2131             gtk_widget_show_now (button);
2132
2133           if (gtk_widget_get_visible (button) &&
2134               !gtk_widget_get_mapped (button))
2135             gtk_widget_map (button);
2136         }
2137       for (list = tree_view->priv->columns; list; list = list->next)
2138         {
2139           column = list->data;
2140           if (gtk_tree_view_column_get_visible (column) == FALSE)
2141             continue;
2142
2143           window = _gtk_tree_view_column_get_window (column);
2144           if (gtk_tree_view_column_get_resizable (column))
2145             {
2146               gdk_window_raise (window);
2147               gdk_window_show (window);
2148             }
2149           else
2150             gdk_window_hide (window);
2151         }
2152       gdk_window_show (tree_view->priv->header_window);
2153     }
2154 }
2155
2156 static void
2157 gtk_tree_view_map (GtkWidget *widget)
2158 {
2159   GtkTreeView *tree_view = GTK_TREE_VIEW (widget);
2160   GList *tmp_list;
2161
2162   gtk_widget_set_mapped (widget, TRUE);
2163
2164   tmp_list = tree_view->priv->children;
2165   while (tmp_list)
2166     {
2167       GtkTreeViewChild *child = tmp_list->data;
2168       tmp_list = tmp_list->next;
2169
2170       if (gtk_widget_get_visible (child->widget))
2171         {
2172           if (!gtk_widget_get_mapped (child->widget))
2173             gtk_widget_map (child->widget);
2174         }
2175     }
2176   gdk_window_show (tree_view->priv->bin_window);
2177
2178   gtk_tree_view_map_buttons (tree_view);
2179
2180   gdk_window_show (gtk_widget_get_window (widget));
2181 }
2182
2183 static void
2184 gtk_tree_view_realize (GtkWidget *widget)
2185 {
2186   GtkAllocation allocation;
2187   GtkStyleContext *context;
2188   GtkTreeView *tree_view = GTK_TREE_VIEW (widget);
2189   GdkWindow *window;
2190   GdkWindowAttr attributes;
2191   GList *tmp_list;
2192   gint attributes_mask;
2193
2194   gtk_widget_set_realized (widget, TRUE);
2195
2196   gtk_widget_get_allocation (widget, &allocation);
2197
2198   /* Make the main, clipping window */
2199   attributes.window_type = GDK_WINDOW_CHILD;
2200   attributes.x = allocation.x;
2201   attributes.y = allocation.y;
2202   attributes.width = allocation.width;
2203   attributes.height = allocation.height;
2204   attributes.wclass = GDK_INPUT_OUTPUT;
2205   attributes.visual = gtk_widget_get_visual (widget);
2206   attributes.event_mask = GDK_VISIBILITY_NOTIFY_MASK;
2207
2208   attributes_mask = GDK_WA_X | GDK_WA_Y | GDK_WA_VISUAL;
2209
2210   window = gdk_window_new (gtk_widget_get_parent_window (widget),
2211                            &attributes, attributes_mask);
2212   gtk_widget_set_window (widget, window);
2213   gdk_window_set_user_data (window, widget);
2214
2215   gtk_widget_get_allocation (widget, &allocation);
2216
2217   /* Make the window for the tree */
2218   attributes.x = 0;
2219   attributes.y = gtk_tree_view_get_effective_header_height (tree_view);
2220   attributes.width = MAX (tree_view->priv->width, allocation.width);
2221   attributes.height = allocation.height;
2222   attributes.event_mask = (GDK_EXPOSURE_MASK |
2223                            GDK_SCROLL_MASK |
2224                            GDK_POINTER_MOTION_MASK |
2225                            GDK_ENTER_NOTIFY_MASK |
2226                            GDK_LEAVE_NOTIFY_MASK |
2227                            GDK_BUTTON_PRESS_MASK |
2228                            GDK_BUTTON_RELEASE_MASK |
2229                            gtk_widget_get_events (widget));
2230
2231   tree_view->priv->bin_window = gdk_window_new (window,
2232                                                 &attributes, attributes_mask);
2233   gdk_window_set_user_data (tree_view->priv->bin_window, widget);
2234
2235   gtk_widget_get_allocation (widget, &allocation);
2236
2237   /* Make the column header window */
2238   attributes.x = 0;
2239   attributes.y = 0;
2240   attributes.width = MAX (tree_view->priv->width, allocation.width);
2241   attributes.height = tree_view->priv->header_height;
2242   attributes.event_mask = (GDK_EXPOSURE_MASK |
2243                            GDK_SCROLL_MASK |
2244                            GDK_ENTER_NOTIFY_MASK |
2245                            GDK_LEAVE_NOTIFY_MASK |
2246                            GDK_BUTTON_PRESS_MASK |
2247                            GDK_BUTTON_RELEASE_MASK |
2248                            GDK_KEY_PRESS_MASK |
2249                            GDK_KEY_RELEASE_MASK |
2250                            gtk_widget_get_events (widget));
2251
2252   tree_view->priv->header_window = gdk_window_new (window,
2253                                                    &attributes, attributes_mask);
2254   gdk_window_set_user_data (tree_view->priv->header_window, widget);
2255
2256   context = gtk_widget_get_style_context (widget);
2257
2258   gtk_style_context_save (context);
2259   gtk_style_context_add_class (context, GTK_STYLE_CLASS_VIEW);
2260   gtk_style_context_set_background (context, tree_view->priv->bin_window);
2261   gtk_style_context_restore (context);
2262
2263   gtk_style_context_set_background (context, tree_view->priv->header_window);
2264
2265   tmp_list = tree_view->priv->children;
2266   while (tmp_list)
2267     {
2268       GtkTreeViewChild *child = tmp_list->data;
2269       tmp_list = tmp_list->next;
2270
2271       gtk_widget_set_parent_window (child->widget, tree_view->priv->bin_window);
2272     }
2273
2274   for (tmp_list = tree_view->priv->columns; tmp_list; tmp_list = tmp_list->next)
2275     _gtk_tree_view_column_realize_button (GTK_TREE_VIEW_COLUMN (tmp_list->data));
2276
2277   /* Need to call those here, since they create GCs */
2278   gtk_tree_view_set_grid_lines (tree_view, tree_view->priv->grid_lines);
2279   gtk_tree_view_set_enable_tree_lines (tree_view, tree_view->priv->tree_lines_enabled);
2280
2281   install_presize_handler (tree_view);
2282 }
2283
2284 static void
2285 gtk_tree_view_unrealize (GtkWidget *widget)
2286 {
2287   GtkTreeView *tree_view = GTK_TREE_VIEW (widget);
2288   GtkTreeViewPrivate *priv = tree_view->priv;
2289   GtkStyleContext *context;
2290   GList *list;
2291
2292   if (priv->scroll_timeout != 0)
2293     {
2294       g_source_remove (priv->scroll_timeout);
2295       priv->scroll_timeout = 0;
2296     }
2297
2298   if (priv->auto_expand_timeout != 0)
2299     {
2300       g_source_remove (priv->auto_expand_timeout);
2301       priv->auto_expand_timeout = 0;
2302     }
2303
2304   if (priv->open_dest_timeout != 0)
2305     {
2306       g_source_remove (priv->open_dest_timeout);
2307       priv->open_dest_timeout = 0;
2308     }
2309
2310   context = gtk_widget_get_style_context (widget);
2311   gtk_style_context_cancel_animations (context, NULL);
2312
2313   if (priv->presize_handler_timer != 0)
2314     {
2315       g_source_remove (priv->presize_handler_timer);
2316       priv->presize_handler_timer = 0;
2317     }
2318
2319   if (priv->validate_rows_timer != 0)
2320     {
2321       g_source_remove (priv->validate_rows_timer);
2322       priv->validate_rows_timer = 0;
2323     }
2324
2325   if (priv->scroll_sync_timer != 0)
2326     {
2327       g_source_remove (priv->scroll_sync_timer);
2328       priv->scroll_sync_timer = 0;
2329     }
2330
2331   if (priv->typeselect_flush_timeout)
2332     {
2333       g_source_remove (priv->typeselect_flush_timeout);
2334       priv->typeselect_flush_timeout = 0;
2335     }
2336
2337   for (list = priv->columns; list; list = list->next)
2338     _gtk_tree_view_column_unrealize_button (GTK_TREE_VIEW_COLUMN (list->data));
2339
2340   gdk_window_set_user_data (priv->bin_window, NULL);
2341   gdk_window_destroy (priv->bin_window);
2342   priv->bin_window = NULL;
2343
2344   gdk_window_set_user_data (priv->header_window, NULL);
2345   gdk_window_destroy (priv->header_window);
2346   priv->header_window = NULL;
2347
2348   if (priv->drag_window)
2349     {
2350       gdk_window_set_user_data (priv->drag_window, NULL);
2351       gdk_window_destroy (priv->drag_window);
2352       priv->drag_window = NULL;
2353     }
2354
2355   if (priv->drag_highlight_window)
2356     {
2357       gdk_window_set_user_data (priv->drag_highlight_window, NULL);
2358       gdk_window_destroy (priv->drag_highlight_window);
2359       priv->drag_highlight_window = NULL;
2360     }
2361
2362   GTK_WIDGET_CLASS (gtk_tree_view_parent_class)->unrealize (widget);
2363 }
2364
2365 /* GtkWidget::size_request helper */
2366 static void
2367 gtk_tree_view_size_request_columns (GtkTreeView *tree_view)
2368 {
2369   GList *list;
2370
2371   tree_view->priv->header_height = 0;
2372
2373   for (list = tree_view->priv->columns; list; list = list->next)
2374     {
2375       GtkRequisition     requisition;
2376       GtkTreeViewColumn *column = list->data;
2377       GtkWidget         *button = gtk_tree_view_column_get_button (column);
2378
2379       if (button == NULL)
2380         continue;
2381
2382       gtk_widget_get_preferred_size (button, &requisition, NULL);
2383       tree_view->priv->header_height = MAX (tree_view->priv->header_height, requisition.height);
2384     }
2385 }
2386
2387
2388 /* Called only by ::size_request */
2389 static void
2390 gtk_tree_view_update_size (GtkTreeView *tree_view)
2391 {
2392   GList *list;
2393   GtkTreeViewColumn *column;
2394   gint i;
2395
2396   if (tree_view->priv->model == NULL)
2397     {
2398       tree_view->priv->width = 0;
2399       tree_view->priv->prev_width = 0;
2400       tree_view->priv->height = 0;
2401       return;
2402     }
2403
2404   tree_view->priv->prev_width = tree_view->priv->width;
2405   tree_view->priv->width = 0;
2406
2407   /* keep this in sync with size_allocate below */
2408   for (list = tree_view->priv->columns, i = 0; list; list = list->next, i++)
2409     {
2410       column = list->data;
2411       if (!gtk_tree_view_column_get_visible (column))
2412         continue;
2413
2414       tree_view->priv->width += _gtk_tree_view_column_request_width (column);
2415     }
2416
2417   if (tree_view->priv->tree == NULL)
2418     tree_view->priv->height = 0;
2419   else
2420     tree_view->priv->height = tree_view->priv->tree->root->offset;
2421 }
2422
2423 static void
2424 gtk_tree_view_size_request (GtkWidget      *widget,
2425                             GtkRequisition *requisition,
2426                             gboolean        may_validate)
2427 {
2428   GtkTreeView *tree_view = GTK_TREE_VIEW (widget);
2429
2430   if (may_validate)
2431     {
2432       /* we validate some rows initially just to make sure we have some size.
2433        * In practice, with a lot of static lists, this should get a good width.
2434        */
2435       do_validate_rows (tree_view, FALSE);
2436     }
2437
2438   gtk_tree_view_size_request_columns (tree_view);
2439   gtk_tree_view_update_size (GTK_TREE_VIEW (widget));
2440
2441   requisition->width = tree_view->priv->width;
2442   requisition->height = tree_view->priv->height + gtk_tree_view_get_effective_header_height (tree_view);
2443 }
2444
2445 static void
2446 gtk_tree_view_get_preferred_width (GtkWidget *widget,
2447                                    gint      *minimum,
2448                                    gint      *natural)
2449 {
2450   GtkRequisition requisition;
2451
2452   gtk_tree_view_size_request (widget, &requisition, TRUE);
2453
2454   *minimum = *natural = requisition.width;
2455 }
2456
2457 static void
2458 gtk_tree_view_get_preferred_height (GtkWidget *widget,
2459                                     gint      *minimum,
2460                                     gint      *natural)
2461 {
2462   GtkRequisition requisition;
2463
2464   gtk_tree_view_size_request (widget, &requisition, TRUE);
2465
2466   *minimum = *natural = requisition.height;
2467 }
2468
2469 static int
2470 gtk_tree_view_calculate_width_before_expander (GtkTreeView *tree_view)
2471 {
2472   int width = 0;
2473   GList *list;
2474   gboolean rtl;
2475
2476   rtl = (gtk_widget_get_direction (GTK_WIDGET (tree_view)) == GTK_TEXT_DIR_RTL);
2477   for (list = (rtl ? g_list_last (tree_view->priv->columns) : g_list_first (tree_view->priv->columns));
2478        list->data != tree_view->priv->expander_column;
2479        list = (rtl ? list->prev : list->next))
2480     {
2481       GtkTreeViewColumn *column = list->data;
2482
2483       width += gtk_tree_view_column_get_width (column);
2484     }
2485
2486   return width;
2487 }
2488
2489 /* GtkWidget::size_allocate helper */
2490 static void
2491 gtk_tree_view_size_allocate_columns (GtkWidget *widget,
2492                                      gboolean  *width_changed)
2493 {
2494   GtkTreeView *tree_view;
2495   GList *list, *first_column, *last_column;
2496   GtkTreeViewColumn *column;
2497   GtkAllocation widget_allocation;
2498   gint width = 0;
2499   gint extra, extra_per_column, extra_for_last;
2500   gint full_requested_width = 0;
2501   gint number_of_expand_columns = 0;
2502   gboolean rtl;
2503   gboolean update_expand;
2504
2505   tree_view = GTK_TREE_VIEW (widget);
2506
2507   for (last_column = g_list_last (tree_view->priv->columns);
2508        last_column &&
2509        !(gtk_tree_view_column_get_visible (GTK_TREE_VIEW_COLUMN (last_column->data)));
2510        last_column = last_column->prev)
2511     ;
2512   if (last_column == NULL)
2513     return;
2514
2515   for (first_column = g_list_first (tree_view->priv->columns);
2516        first_column &&
2517        !(gtk_tree_view_column_get_visible (GTK_TREE_VIEW_COLUMN (first_column->data)));
2518        first_column = first_column->next)
2519     ;
2520
2521   rtl = (gtk_widget_get_direction (widget) == GTK_TEXT_DIR_RTL);
2522
2523   /* find out how many extra space and expandable columns we have */
2524   for (list = tree_view->priv->columns; list != last_column->next; list = list->next)
2525     {
2526       column = (GtkTreeViewColumn *)list->data;
2527
2528       if (!gtk_tree_view_column_get_visible (column))
2529         continue;
2530
2531       full_requested_width += _gtk_tree_view_column_request_width (column);
2532
2533       if (gtk_tree_view_column_get_expand (column))
2534         number_of_expand_columns++;
2535     }
2536
2537   /* Only update the expand value if the width of the widget has changed,
2538    * or the number of expand columns has changed, or if there are no expand
2539    * columns, or if we didn't have an size-allocation yet after the
2540    * last validated node.
2541    */
2542   update_expand = (width_changed && *width_changed == TRUE)
2543       || number_of_expand_columns != tree_view->priv->last_number_of_expand_columns
2544       || number_of_expand_columns == 0
2545       || tree_view->priv->post_validation_flag == TRUE;
2546
2547   tree_view->priv->post_validation_flag = FALSE;
2548
2549   gtk_widget_get_allocation (widget, &widget_allocation);
2550   if (!update_expand)
2551     {
2552       extra = tree_view->priv->last_extra_space;
2553       extra_for_last = MAX (widget_allocation.width - full_requested_width - extra, 0);
2554     }
2555   else
2556     {
2557       extra = MAX (widget_allocation.width - full_requested_width, 0);
2558       extra_for_last = 0;
2559
2560       tree_view->priv->last_extra_space = extra;
2561     }
2562
2563   if (number_of_expand_columns > 0)
2564     extra_per_column = extra/number_of_expand_columns;
2565   else
2566     extra_per_column = 0;
2567
2568   if (update_expand)
2569     {
2570       tree_view->priv->last_extra_space_per_column = extra_per_column;
2571       tree_view->priv->last_number_of_expand_columns = number_of_expand_columns;
2572     }
2573
2574   for (list = (rtl ? last_column : first_column);
2575        list != (rtl ? first_column->prev : last_column->next);
2576        list = (rtl ? list->prev : list->next))
2577     {
2578       gint column_width;
2579
2580       column = list->data;
2581
2582       if (!gtk_tree_view_column_get_visible (column))
2583         continue;
2584
2585       /* We need to handle the dragged button specially.
2586        */
2587       if (column == tree_view->priv->drag_column)
2588         {
2589           GtkAllocation drag_allocation;
2590           GtkWidget    *button;
2591
2592           button = gtk_tree_view_column_get_button (tree_view->priv->drag_column);
2593
2594           drag_allocation.x = 0;
2595           drag_allocation.y = 0;
2596           drag_allocation.width = gdk_window_get_width (tree_view->priv->drag_window);
2597           drag_allocation.height = gdk_window_get_height (tree_view->priv->drag_window);
2598           gtk_widget_size_allocate (button, &drag_allocation);
2599           width += drag_allocation.width;
2600           continue;
2601         }
2602
2603       column_width = _gtk_tree_view_column_request_width (column);
2604
2605       if (gtk_tree_view_column_get_expand (column))
2606         {
2607           if (number_of_expand_columns == 1)
2608             {
2609               /* We add the remander to the last column as
2610                * */
2611               column_width += extra;
2612             }
2613           else
2614             {
2615               column_width += extra_per_column;
2616               extra -= extra_per_column;
2617               number_of_expand_columns --;
2618             }
2619         }
2620       else if (number_of_expand_columns == 0 &&
2621                list == last_column)
2622         {
2623           column_width += extra;
2624         }
2625
2626       /* In addition to expand, the last column can get even more
2627        * extra space so all available space is filled up.
2628        */
2629       if (extra_for_last > 0 && list == last_column)
2630         column_width += extra_for_last;
2631
2632       _gtk_tree_view_column_allocate (column, width, column_width);
2633
2634       width += column_width;
2635     }
2636
2637   /* We change the width here.  The user might have been resizing columns,
2638    * which changes the total width of the tree view.  This is of
2639    * importance for getting the horizontal scroll bar right.
2640    */
2641   if (tree_view->priv->width != width)
2642     {
2643       tree_view->priv->width = width;
2644       if (width_changed)
2645         *width_changed = TRUE;
2646     }
2647 }
2648
2649
2650 static void
2651 gtk_tree_view_size_allocate (GtkWidget     *widget,
2652                              GtkAllocation *allocation)
2653 {
2654   GtkAllocation widget_allocation;
2655   GtkTreeView *tree_view = GTK_TREE_VIEW (widget);
2656   GList *tmp_list;
2657   gboolean width_changed = FALSE;
2658   gint old_width;
2659
2660   gtk_widget_get_allocation (widget, &widget_allocation);
2661   old_width = widget_allocation.width;
2662   if (allocation->width != widget_allocation.width)
2663     width_changed = TRUE;
2664
2665   gtk_widget_set_allocation (widget, allocation);
2666
2667   tmp_list = tree_view->priv->children;
2668
2669   while (tmp_list)
2670     {
2671       GtkAllocation allocation;
2672
2673       GtkTreeViewChild *child = tmp_list->data;
2674       tmp_list = tmp_list->next;
2675
2676       /* totally ignore our child's requisition */
2677       allocation.x = child->x;
2678       allocation.y = child->y;
2679       allocation.width = child->width;
2680       allocation.height = child->height;
2681       gtk_widget_size_allocate (child->widget, &allocation);
2682     }
2683
2684   /* We size-allocate the columns first because the width of the
2685    * tree view (used in updating the adjustments below) might change.
2686    */
2687   gtk_tree_view_size_allocate_columns (widget, &width_changed);
2688
2689   g_object_freeze_notify (G_OBJECT (tree_view->priv->hadjustment));
2690   gtk_adjustment_set_page_size (tree_view->priv->hadjustment,
2691                                 allocation->width);
2692   gtk_adjustment_set_page_increment (tree_view->priv->hadjustment,
2693                                      allocation->width * 0.9);
2694   gtk_adjustment_set_step_increment (tree_view->priv->hadjustment,
2695                                      allocation->width * 0.1);
2696   gtk_adjustment_set_lower (tree_view->priv->hadjustment, 0);
2697   gtk_adjustment_set_upper (tree_view->priv->hadjustment,
2698                             MAX (gtk_adjustment_get_page_size (tree_view->priv->hadjustment),
2699                                  tree_view->priv->width));
2700   g_object_thaw_notify (G_OBJECT (tree_view->priv->hadjustment));
2701
2702   if (gtk_widget_get_direction(widget) == GTK_TEXT_DIR_RTL)
2703     {
2704       if (allocation->width < tree_view->priv->width)
2705         {
2706           if (tree_view->priv->init_hadjust_value)
2707             {
2708               gtk_adjustment_set_value (tree_view->priv->hadjustment,
2709                                         MAX (tree_view->priv->width -
2710                                              allocation->width, 0));
2711               tree_view->priv->init_hadjust_value = FALSE;
2712             }
2713           else if (allocation->width != old_width)
2714             {
2715               gtk_adjustment_set_value (tree_view->priv->hadjustment,
2716                                         CLAMP (gtk_adjustment_get_value (tree_view->priv->hadjustment) - allocation->width + old_width,
2717                                                0,
2718                                                tree_view->priv->width - allocation->width));
2719             }
2720           else
2721             gtk_adjustment_set_value (tree_view->priv->hadjustment,
2722                                       CLAMP (tree_view->priv->width - (tree_view->priv->prev_width - gtk_adjustment_get_value (tree_view->priv->hadjustment)),
2723                                              0,
2724                                              tree_view->priv->width - allocation->width));
2725         }
2726       else
2727         {
2728           gtk_adjustment_set_value (tree_view->priv->hadjustment, 0);
2729           tree_view->priv->init_hadjust_value = TRUE;
2730         }
2731     }
2732   else
2733     if (gtk_adjustment_get_value (tree_view->priv->hadjustment) + allocation->width > tree_view->priv->width)
2734       gtk_adjustment_set_value (tree_view->priv->hadjustment,
2735                                 MAX (tree_view->priv->width -
2736                                      allocation->width, 0));
2737
2738   g_object_freeze_notify (G_OBJECT (tree_view->priv->vadjustment));
2739   gtk_adjustment_set_page_size (tree_view->priv->vadjustment,
2740                                 allocation->height -
2741                                 gtk_tree_view_get_effective_header_height (tree_view));
2742   gtk_adjustment_set_step_increment (tree_view->priv->vadjustment,
2743                                      gtk_adjustment_get_page_size (tree_view->priv->vadjustment) * 0.1);
2744   gtk_adjustment_set_page_increment (tree_view->priv->vadjustment,
2745                                      gtk_adjustment_get_page_size (tree_view->priv->vadjustment) * 0.9);
2746   gtk_adjustment_set_lower (tree_view->priv->vadjustment, 0);
2747   gtk_adjustment_set_upper (tree_view->priv->vadjustment,
2748                             MAX (gtk_adjustment_get_page_size (tree_view->priv->vadjustment),
2749                                  tree_view->priv->height));
2750   g_object_thaw_notify (G_OBJECT (tree_view->priv->vadjustment));
2751
2752   /* now the adjustments and window sizes are in sync, we can sync toprow/dy again */
2753   if (tree_view->priv->height <= gtk_adjustment_get_page_size (tree_view->priv->vadjustment))
2754     gtk_adjustment_set_value (GTK_ADJUSTMENT (tree_view->priv->vadjustment), 0);
2755   else if (gtk_adjustment_get_value (tree_view->priv->vadjustment) + gtk_adjustment_get_page_size (tree_view->priv->vadjustment) > tree_view->priv->height)
2756     gtk_adjustment_set_value (GTK_ADJUSTMENT (tree_view->priv->vadjustment),
2757                               tree_view->priv->height - gtk_adjustment_get_page_size (tree_view->priv->vadjustment));
2758   else if (gtk_tree_row_reference_valid (tree_view->priv->top_row))
2759     gtk_tree_view_top_row_to_dy (tree_view);
2760   else
2761     gtk_tree_view_dy_to_top_row (tree_view);
2762
2763   if (gtk_widget_get_realized (widget))
2764     {
2765       gdk_window_move_resize (gtk_widget_get_window (widget),
2766                               allocation->x, allocation->y,
2767                               allocation->width, allocation->height);
2768       gdk_window_move_resize (tree_view->priv->header_window,
2769                               - (gint) gtk_adjustment_get_value (tree_view->priv->hadjustment),
2770                               0,
2771                               MAX (tree_view->priv->width, allocation->width),
2772                               tree_view->priv->header_height);
2773       gdk_window_move_resize (tree_view->priv->bin_window,
2774                               - (gint) gtk_adjustment_get_value (tree_view->priv->hadjustment),
2775                               gtk_tree_view_get_effective_header_height (tree_view),
2776                               MAX (tree_view->priv->width, allocation->width),
2777                               allocation->height - gtk_tree_view_get_effective_header_height (tree_view));
2778
2779       if (tree_view->priv->tree == NULL)
2780         invalidate_empty_focus (tree_view);
2781
2782       if (width_changed && tree_view->priv->expander_column)
2783         {
2784           /* Might seem awkward, but is the best heuristic I could come up
2785            * with.  Only if the width of the columns before the expander
2786            * changes, we will update the prelight status.  It is this
2787            * width that makes the expander move vertically.  Always updating
2788            * prelight status causes trouble with hover selections.
2789            */
2790           gint width_before_expander;
2791
2792           width_before_expander = gtk_tree_view_calculate_width_before_expander (tree_view);
2793
2794           if (tree_view->priv->prev_width_before_expander
2795               != width_before_expander)
2796               update_prelight (tree_view,
2797                                tree_view->priv->event_last_x,
2798                                tree_view->priv->event_last_y);
2799
2800           tree_view->priv->prev_width_before_expander = width_before_expander;
2801         }
2802     }
2803 }
2804
2805 /* Grabs the focus and unsets the GTK_TREE_VIEW_DRAW_KEYFOCUS flag */
2806 static void
2807 grab_focus_and_unset_draw_keyfocus (GtkTreeView *tree_view)
2808 {
2809   GtkWidget *widget = GTK_WIDGET (tree_view);
2810
2811   if (gtk_widget_get_can_focus (widget) && !gtk_widget_has_focus (widget))
2812     gtk_widget_grab_focus (widget);
2813   tree_view->priv->draw_keyfocus = 0;
2814 }
2815
2816 static inline gboolean
2817 row_is_separator (GtkTreeView *tree_view,
2818                   GtkTreeIter *iter,
2819                   GtkTreePath *path)
2820 {
2821   gboolean is_separator = FALSE;
2822
2823   if (tree_view->priv->row_separator_func)
2824     {
2825       GtkTreeIter tmpiter;
2826
2827       if (iter)
2828         tmpiter = *iter;
2829       else
2830         {
2831           if (!gtk_tree_model_get_iter (tree_view->priv->model, &tmpiter, path))
2832             return FALSE;
2833         }
2834
2835       is_separator = tree_view->priv->row_separator_func (tree_view->priv->model,
2836                                                           &tmpiter,
2837                                                           tree_view->priv->row_separator_data);
2838     }
2839
2840   return is_separator;
2841 }
2842
2843 static gboolean
2844 gtk_tree_view_button_press (GtkWidget      *widget,
2845                             GdkEventButton *event)
2846 {
2847   GtkTreeView *tree_view = GTK_TREE_VIEW (widget);
2848   GList *list;
2849   GtkTreeViewColumn *column = NULL;
2850   gint i;
2851   GdkRectangle background_area;
2852   GdkRectangle cell_area;
2853   gint vertical_separator;
2854   gint horizontal_separator;
2855   gboolean path_is_selectable;
2856   gboolean rtl;
2857
2858   rtl = (gtk_widget_get_direction (widget) == GTK_TEXT_DIR_RTL);
2859   gtk_tree_view_stop_editing (tree_view, FALSE);
2860   gtk_widget_style_get (widget,
2861                         "vertical-separator", &vertical_separator,
2862                         "horizontal-separator", &horizontal_separator,
2863                         NULL);
2864
2865   /* Because grab_focus can cause reentrancy, we delay grab_focus until after
2866    * we're done handling the button press.
2867    */
2868
2869   if (event->window == tree_view->priv->bin_window)
2870     {
2871       GtkRBNode *node;
2872       GtkRBTree *tree;
2873       GtkTreePath *path;
2874       gint depth;
2875       gint new_y;
2876       gint y_offset;
2877       gint dval;
2878       gint pre_val, aft_val;
2879       GtkTreeViewColumn *column = NULL;
2880       gint column_handled_click = FALSE;
2881       gboolean row_double_click = FALSE;
2882       gboolean rtl;
2883       gboolean node_selected;
2884       GdkModifierType extend_mod_mask;
2885       GdkModifierType modify_mod_mask;
2886
2887       /* Empty tree? */
2888       if (tree_view->priv->tree == NULL)
2889         {
2890           grab_focus_and_unset_draw_keyfocus (tree_view);
2891           return TRUE;
2892         }
2893
2894       /* are we in an arrow? */
2895       if (tree_view->priv->prelight_node &&
2896           tree_view->priv->arrow_prelit &&
2897           gtk_tree_view_draw_expanders (tree_view))
2898         {
2899           if (event->button == 1)
2900             {
2901               gtk_grab_add (widget);
2902               tree_view->priv->button_pressed_node = tree_view->priv->prelight_node;
2903               tree_view->priv->button_pressed_tree = tree_view->priv->prelight_tree;
2904               gtk_tree_view_queue_draw_arrow (GTK_TREE_VIEW (widget),
2905                                               tree_view->priv->prelight_tree,
2906                                               tree_view->priv->prelight_node);
2907             }
2908
2909           grab_focus_and_unset_draw_keyfocus (tree_view);
2910           return TRUE;
2911         }
2912
2913       /* find the node that was clicked */
2914       new_y = TREE_WINDOW_Y_TO_RBTREE_Y(tree_view, event->y);
2915       if (new_y < 0)
2916         new_y = 0;
2917       y_offset = -_gtk_rbtree_find_offset (tree_view->priv->tree, new_y, &tree, &node);
2918
2919       if (node == NULL)
2920         {
2921           /* We clicked in dead space */
2922           grab_focus_and_unset_draw_keyfocus (tree_view);
2923           return TRUE;
2924         }
2925
2926       /* Get the path and the node */
2927       path = _gtk_tree_view_find_path (tree_view, tree, node);
2928       path_is_selectable = !row_is_separator (tree_view, NULL, path);
2929
2930       if (!path_is_selectable)
2931         {
2932           gtk_tree_path_free (path);
2933           grab_focus_and_unset_draw_keyfocus (tree_view);
2934           return TRUE;
2935         }
2936
2937       depth = gtk_tree_path_get_depth (path);
2938       background_area.y = y_offset + event->y;
2939       background_area.height = gtk_tree_view_get_row_height (tree_view, node);
2940       background_area.x = 0;
2941
2942
2943       /* Let the column have a chance at selecting it. */
2944       rtl = (gtk_widget_get_direction (GTK_WIDGET (tree_view)) == GTK_TEXT_DIR_RTL);
2945       for (list = (rtl ? g_list_last (tree_view->priv->columns) : g_list_first (tree_view->priv->columns));
2946            list; list = (rtl ? list->prev : list->next))
2947         {
2948           GtkTreeViewColumn *candidate = list->data;
2949
2950           if (!gtk_tree_view_column_get_visible (candidate))
2951             continue;
2952
2953           background_area.width = gtk_tree_view_column_get_width (candidate);
2954           if ((background_area.x > (gint) event->x) ||
2955               (background_area.x + background_area.width <= (gint) event->x))
2956             {
2957               background_area.x += background_area.width;
2958               continue;
2959             }
2960
2961           /* we found the focus column */
2962           column = candidate;
2963           cell_area = background_area;
2964           cell_area.width -= horizontal_separator;
2965           cell_area.height -= vertical_separator;
2966           cell_area.x += horizontal_separator/2;
2967           cell_area.y += vertical_separator/2;
2968           if (gtk_tree_view_is_expander_column (tree_view, column))
2969             {
2970               if (!rtl)
2971                 cell_area.x += (depth - 1) * tree_view->priv->level_indentation;
2972               cell_area.width -= (depth - 1) * tree_view->priv->level_indentation;
2973
2974               if (gtk_tree_view_draw_expanders (tree_view))
2975                 {
2976                   if (!rtl)
2977                     cell_area.x += depth * tree_view->priv->expander_size;
2978                   cell_area.width -= depth * tree_view->priv->expander_size;
2979                 }
2980             }
2981           break;
2982         }
2983
2984       if (column == NULL)
2985         {
2986           gtk_tree_path_free (path);
2987           grab_focus_and_unset_draw_keyfocus (tree_view);
2988           return FALSE;
2989         }
2990
2991       tree_view->priv->focus_column = column;
2992
2993       /* decide if we edit */
2994       if (event->type == GDK_BUTTON_PRESS && event->button == 1 &&
2995           !(event->state & gtk_accelerator_get_default_mod_mask ()))
2996         {
2997           GtkTreePath *anchor;
2998           GtkTreeIter iter;
2999
3000           gtk_tree_model_get_iter (tree_view->priv->model, &iter, path);
3001           gtk_tree_view_column_cell_set_cell_data (column,
3002                                                    tree_view->priv->model,
3003                                                    &iter,
3004                                                    GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_PARENT),
3005                                                    node->children?TRUE:FALSE);
3006
3007           if (tree_view->priv->anchor)
3008             anchor = gtk_tree_row_reference_get_path (tree_view->priv->anchor);
3009           else
3010             anchor = NULL;
3011
3012           if ((anchor && !gtk_tree_path_compare (anchor, path))
3013               || !_gtk_tree_view_column_has_editable_cell (column))
3014             {
3015               GtkCellEditable *cell_editable = NULL;
3016
3017               /* FIXME: get the right flags */
3018               guint flags = 0;
3019
3020               if (_gtk_tree_view_column_cell_event (column,
3021                                                     (GdkEvent *)event,
3022                                                     &cell_area, flags))
3023                 {
3024                   GtkCellArea *area = gtk_cell_layout_get_area (GTK_CELL_LAYOUT (column));
3025                   cell_editable = gtk_cell_area_get_edit_widget (area);
3026
3027                   if (cell_editable != NULL)
3028                     {
3029                       gtk_tree_path_free (path);
3030                       gtk_tree_path_free (anchor);
3031                       return TRUE;
3032                     }
3033                   column_handled_click = TRUE;
3034                 }
3035             }
3036           if (anchor)
3037             gtk_tree_path_free (anchor);
3038         }
3039
3040       extend_mod_mask =
3041         gtk_widget_get_modifier_mask (widget, GDK_MODIFIER_INTENT_EXTEND_SELECTION);
3042
3043       modify_mod_mask =
3044         gtk_widget_get_modifier_mask (widget, GDK_MODIFIER_INTENT_MODIFY_SELECTION);
3045
3046       /* select */
3047       node_selected = GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_SELECTED);
3048       pre_val = gtk_adjustment_get_value (tree_view->priv->vadjustment);
3049
3050       /* we only handle selection modifications on the first button press
3051        */
3052       if (event->type == GDK_BUTTON_PRESS)
3053         {
3054           GtkCellRenderer *focus_cell;
3055
3056           if ((event->state & modify_mod_mask) == modify_mod_mask)
3057             tree_view->priv->modify_selection_pressed = TRUE;
3058           if ((event->state & extend_mod_mask) == extend_mod_mask)
3059             tree_view->priv->extend_selection_pressed = TRUE;
3060
3061           /* We update the focus cell here, this is also needed if the
3062            * column does not contain an editable cell.  In this case,
3063            * GtkCellArea did not receive the event for processing (and
3064            * could not update the focus cell).
3065            */
3066           focus_cell = _gtk_tree_view_column_get_cell_at_pos (column,
3067                                                               &cell_area,
3068                                                               &background_area,
3069                                                               event->x,
3070                                                               event->y);
3071
3072           if (focus_cell)
3073             gtk_tree_view_column_focus_cell (column, focus_cell);
3074
3075           if (event->state & modify_mod_mask)
3076             {
3077               gtk_tree_view_real_set_cursor (tree_view, path, FALSE, TRUE);
3078               gtk_tree_view_real_toggle_cursor_row (tree_view);
3079             }
3080           else if (event->state & extend_mod_mask)
3081             {
3082               gtk_tree_view_real_set_cursor (tree_view, path, FALSE, TRUE);
3083               gtk_tree_view_real_select_cursor_row (tree_view, FALSE);
3084             }
3085           else
3086             {
3087               gtk_tree_view_real_set_cursor (tree_view, path, TRUE, TRUE);
3088             }
3089
3090           tree_view->priv->modify_selection_pressed = FALSE;
3091           tree_view->priv->extend_selection_pressed = FALSE;
3092         }
3093
3094       /* the treeview may have been scrolled because of _set_cursor,
3095        * correct here
3096        */
3097
3098       aft_val = gtk_adjustment_get_value (tree_view->priv->vadjustment);
3099       dval = pre_val - aft_val;
3100
3101       cell_area.y += dval;
3102       background_area.y += dval;
3103
3104       /* Save press to possibly begin a drag
3105        */
3106       if (!column_handled_click &&
3107           !tree_view->priv->in_grab &&
3108           tree_view->priv->pressed_button < 0)
3109         {
3110           tree_view->priv->pressed_button = event->button;
3111           tree_view->priv->press_start_x = event->x;
3112           tree_view->priv->press_start_y = event->y;
3113
3114           if (tree_view->priv->rubber_banding_enable
3115               && !node_selected
3116               && gtk_tree_selection_get_mode (tree_view->priv->selection) == GTK_SELECTION_MULTIPLE)
3117             {
3118               tree_view->priv->press_start_y += tree_view->priv->dy;
3119               tree_view->priv->rubber_band_x = event->x;
3120               tree_view->priv->rubber_band_y = event->y + tree_view->priv->dy;
3121               tree_view->priv->rubber_band_status = RUBBER_BAND_MAYBE_START;
3122
3123               if ((event->state & modify_mod_mask) == modify_mod_mask)
3124                 tree_view->priv->rubber_band_modify = TRUE;
3125               if ((event->state & extend_mod_mask) == extend_mod_mask)
3126                 tree_view->priv->rubber_band_extend = TRUE;
3127             }
3128         }
3129
3130       /* Test if a double click happened on the same row. */
3131       if (event->button == 1 && event->type == GDK_BUTTON_PRESS)
3132         {
3133           int double_click_time, double_click_distance;
3134
3135           g_object_get (gtk_settings_get_default (),
3136                         "gtk-double-click-time", &double_click_time,
3137                         "gtk-double-click-distance", &double_click_distance,
3138                         NULL);
3139
3140           /* Same conditions as _gdk_event_button_generate */
3141           if (tree_view->priv->last_button_x != -1 &&
3142               (event->time < tree_view->priv->last_button_time + double_click_time) &&
3143               (ABS (event->x - tree_view->priv->last_button_x) <= double_click_distance) &&
3144               (ABS (event->y - tree_view->priv->last_button_y) <= double_click_distance))
3145             {
3146               /* We do no longer compare paths of this row and the
3147                * row clicked previously.  We use the double click
3148                * distance to decide whether this is a valid click,
3149                * allowing the mouse to slightly move over another row.
3150                */
3151               row_double_click = TRUE;
3152
3153               tree_view->priv->last_button_time = 0;
3154               tree_view->priv->last_button_x = -1;
3155               tree_view->priv->last_button_y = -1;
3156             }
3157           else
3158             {
3159               tree_view->priv->last_button_time = event->time;
3160               tree_view->priv->last_button_x = event->x;
3161               tree_view->priv->last_button_y = event->y;
3162             }
3163         }
3164
3165       if (row_double_click)
3166         {
3167           gtk_grab_remove (widget);
3168           gtk_tree_view_row_activated (tree_view, path, column);
3169
3170           if (tree_view->priv->pressed_button == event->button)
3171             tree_view->priv->pressed_button = -1;
3172         }
3173
3174       gtk_tree_path_free (path);
3175
3176       /* If we activated the row through a double click we don't want to grab
3177        * focus back, as moving focus to another widget is pretty common.
3178        */
3179       if (!row_double_click)
3180         grab_focus_and_unset_draw_keyfocus (tree_view);
3181
3182       return TRUE;
3183     }
3184
3185   /* We didn't click in the window.  Let's check to see if we clicked on a column resize window.
3186    */
3187   for (i = 0, list = tree_view->priv->columns; list; list = list->next, i++)
3188     {
3189       column = list->data;
3190       if (event->window == _gtk_tree_view_column_get_window (column) &&
3191           gtk_tree_view_column_get_resizable (column) &&
3192           _gtk_tree_view_column_get_window (column))
3193         {
3194           gpointer drag_data;
3195
3196           if (event->type == GDK_2BUTTON_PRESS &&
3197               gtk_tree_view_column_get_sizing (column) != GTK_TREE_VIEW_COLUMN_AUTOSIZE)
3198             {
3199               _gtk_tree_view_column_set_use_resized_width (column, FALSE);
3200               _gtk_tree_view_column_autosize (tree_view, column);
3201               return TRUE;
3202             }
3203
3204           if (gdk_device_grab (gdk_event_get_device ((GdkEvent*)event),
3205                                _gtk_tree_view_column_get_window (column),
3206                                GDK_OWNERSHIP_NONE,
3207                                FALSE,
3208                                GDK_POINTER_MOTION_HINT_MASK
3209                                 | GDK_BUTTON1_MOTION_MASK
3210                                 | GDK_BUTTON_RELEASE_MASK,
3211                                NULL,
3212                                event->time) != GDK_GRAB_SUCCESS)
3213             return FALSE;
3214
3215           gtk_grab_add (widget);
3216           tree_view->priv->in_column_resize = TRUE;
3217
3218           _gtk_tree_view_column_set_resized_width (column, gtk_tree_view_column_get_width (column) -
3219                                                    tree_view->priv->last_extra_space_per_column);
3220
3221           /* block attached dnd signal handler */
3222           drag_data = g_object_get_data (G_OBJECT (widget), "gtk-site-data");
3223           if (drag_data)
3224             g_signal_handlers_block_matched (widget,
3225                                              G_SIGNAL_MATCH_DATA,
3226                                              0, 0, NULL, NULL,
3227                                              drag_data);
3228
3229           tree_view->priv->drag_pos = i;
3230           tree_view->priv->x_drag = gtk_tree_view_column_get_x_offset (column) + (rtl ? 0 : gtk_tree_view_column_get_width (column));
3231
3232           if (!gtk_widget_has_focus (widget))
3233             gtk_widget_grab_focus (widget);
3234
3235           return TRUE;
3236         }
3237     }
3238   return FALSE;
3239 }
3240
3241 /* GtkWidget::button_release_event helper */
3242 static gboolean
3243 gtk_tree_view_button_release_drag_column (GtkWidget      *widget,
3244                                           GdkEventButton *event)
3245 {
3246   GtkTreeView *tree_view;
3247   GtkWidget *button;
3248   GList *l;
3249   gboolean rtl;
3250   GdkDevice *device, *other;
3251
3252   tree_view = GTK_TREE_VIEW (widget);
3253
3254   rtl = (gtk_widget_get_direction (widget) == GTK_TEXT_DIR_RTL);
3255   device = gdk_event_get_device ((GdkEvent*)event);
3256   other = gdk_device_get_associated_device (device);
3257   gdk_device_ungrab (device, event->time);
3258   gdk_device_ungrab (other, event->time);
3259
3260   /* Move the button back */
3261   button = gtk_tree_view_column_get_button (tree_view->priv->drag_column);
3262   g_object_ref (button);
3263   gtk_container_remove (GTK_CONTAINER (tree_view), button);
3264   gtk_widget_set_parent_window (button, tree_view->priv->header_window);
3265   gtk_widget_set_parent (button, GTK_WIDGET (tree_view));
3266   g_object_unref (button);
3267   gtk_widget_queue_resize (widget);
3268   if (gtk_tree_view_column_get_resizable (tree_view->priv->drag_column))
3269     {
3270       gdk_window_raise (_gtk_tree_view_column_get_window (tree_view->priv->drag_column));
3271       gdk_window_show (_gtk_tree_view_column_get_window (tree_view->priv->drag_column));
3272     }
3273   else
3274     gdk_window_hide (_gtk_tree_view_column_get_window (tree_view->priv->drag_column));
3275
3276   gtk_widget_grab_focus (button);
3277
3278   if (rtl)
3279     {
3280       if (tree_view->priv->cur_reorder &&
3281           tree_view->priv->cur_reorder->right_column != tree_view->priv->drag_column)
3282         gtk_tree_view_move_column_after (tree_view, tree_view->priv->drag_column,
3283                                          tree_view->priv->cur_reorder->right_column);
3284     }
3285   else
3286     {
3287       if (tree_view->priv->cur_reorder &&
3288           tree_view->priv->cur_reorder->left_column != tree_view->priv->drag_column)
3289         gtk_tree_view_move_column_after (tree_view, tree_view->priv->drag_column,
3290                                          tree_view->priv->cur_reorder->left_column);
3291     }
3292   tree_view->priv->drag_column = NULL;
3293   gdk_window_hide (tree_view->priv->drag_window);
3294
3295   for (l = tree_view->priv->column_drag_info; l != NULL; l = l->next)
3296     g_slice_free (GtkTreeViewColumnReorder, l->data);
3297   g_list_free (tree_view->priv->column_drag_info);
3298   tree_view->priv->column_drag_info = NULL;
3299   tree_view->priv->cur_reorder = NULL;
3300
3301   if (tree_view->priv->drag_highlight_window)
3302     gdk_window_hide (tree_view->priv->drag_highlight_window);
3303
3304   /* Reset our flags */
3305   tree_view->priv->drag_column_window_state = DRAG_COLUMN_WINDOW_STATE_UNSET;
3306   tree_view->priv->in_column_drag = FALSE;
3307
3308   return TRUE;
3309 }
3310
3311 /* GtkWidget::button_release_event helper */
3312 static gboolean
3313 gtk_tree_view_button_release_column_resize (GtkWidget      *widget,
3314                                             GdkEventButton *event)
3315 {
3316   GtkTreeView *tree_view;
3317   gpointer drag_data;
3318
3319   tree_view = GTK_TREE_VIEW (widget);
3320
3321   tree_view->priv->drag_pos = -1;
3322
3323   /* unblock attached dnd signal handler */
3324   drag_data = g_object_get_data (G_OBJECT (widget), "gtk-site-data");
3325   if (drag_data)
3326     g_signal_handlers_unblock_matched (widget,
3327                                        G_SIGNAL_MATCH_DATA,
3328                                        0, 0, NULL, NULL,
3329                                        drag_data);
3330
3331   tree_view->priv->in_column_resize = FALSE;
3332   gtk_grab_remove (widget);
3333   gdk_device_ungrab (gdk_event_get_device ((GdkEvent*)event), event->time);
3334   return TRUE;
3335 }
3336
3337 static gboolean
3338 gtk_tree_view_button_release (GtkWidget      *widget,
3339                               GdkEventButton *event)
3340 {
3341   GtkTreeView *tree_view = GTK_TREE_VIEW (widget);
3342
3343   if (tree_view->priv->in_column_drag)
3344     return gtk_tree_view_button_release_drag_column (widget, event);
3345
3346   if (tree_view->priv->rubber_band_status)
3347     gtk_tree_view_stop_rubber_band (tree_view);
3348
3349   if (tree_view->priv->pressed_button == event->button)
3350     tree_view->priv->pressed_button = -1;
3351
3352   if (tree_view->priv->in_column_resize)
3353     return gtk_tree_view_button_release_column_resize (widget, event);
3354
3355   if (tree_view->priv->button_pressed_node == NULL)
3356     return FALSE;
3357
3358   if (event->button == 1)
3359     {
3360       if (tree_view->priv->button_pressed_node == tree_view->priv->prelight_node &&
3361           tree_view->priv->arrow_prelit)
3362         {
3363           GtkTreePath *path = NULL;
3364
3365           path = _gtk_tree_view_find_path (tree_view,
3366                                            tree_view->priv->button_pressed_tree,
3367                                            tree_view->priv->button_pressed_node);
3368           /* Actually activate the node */
3369           if (tree_view->priv->button_pressed_node->children == NULL)
3370             gtk_tree_view_real_expand_row (tree_view, path,
3371                                            tree_view->priv->button_pressed_tree,
3372                                            tree_view->priv->button_pressed_node,
3373                                            FALSE, TRUE);
3374           else
3375             gtk_tree_view_real_collapse_row (GTK_TREE_VIEW (widget), path,
3376                                              tree_view->priv->button_pressed_tree,
3377                                              tree_view->priv->button_pressed_node, TRUE);
3378           gtk_tree_path_free (path);
3379         }
3380
3381       gtk_grab_remove (widget);
3382       tree_view->priv->button_pressed_tree = NULL;
3383       tree_view->priv->button_pressed_node = NULL;
3384     }
3385
3386   return TRUE;
3387 }
3388
3389 static gboolean
3390 gtk_tree_view_grab_broken (GtkWidget          *widget,
3391                            GdkEventGrabBroken *event)
3392 {
3393   GtkTreeView *tree_view = GTK_TREE_VIEW (widget);
3394
3395   if (tree_view->priv->in_column_drag)
3396     gtk_tree_view_button_release_drag_column (widget, (GdkEventButton *)event);
3397
3398   if (tree_view->priv->in_column_resize)
3399     gtk_tree_view_button_release_column_resize (widget, (GdkEventButton *)event);
3400
3401   return TRUE;
3402 }
3403
3404 #if 0
3405 static gboolean
3406 gtk_tree_view_configure (GtkWidget *widget,
3407                          GdkEventConfigure *event)
3408 {
3409   GtkTreeView *tree_view;
3410
3411   tree_view = GTK_TREE_VIEW (widget);
3412   tree_view->priv->search_position_func (tree_view, tree_view->priv->search_window);
3413
3414   return FALSE;
3415 }
3416 #endif
3417
3418 /* GtkWidget::motion_event function set.
3419  */
3420
3421 static gboolean
3422 coords_are_over_arrow (GtkTreeView *tree_view,
3423                        GtkRBTree   *tree,
3424                        GtkRBNode   *node,
3425                        /* these are in bin window coords */
3426                        gint         x,
3427                        gint         y)
3428 {
3429   GdkRectangle arrow;
3430   gint x2;
3431
3432   if (!gtk_widget_get_realized (GTK_WIDGET (tree_view)))
3433     return FALSE;
3434
3435   if ((node->flags & GTK_RBNODE_IS_PARENT) == 0)
3436     return FALSE;
3437
3438   arrow.y = gtk_tree_view_get_row_y_offset (tree_view, tree, node);
3439   arrow.height = gtk_tree_view_get_row_height (tree_view, node);
3440
3441   gtk_tree_view_get_arrow_xrange (tree_view, tree, &arrow.x, &x2);
3442
3443   arrow.width = x2 - arrow.x;
3444
3445   return (x >= arrow.x &&
3446           x < (arrow.x + arrow.width) &&
3447           y >= arrow.y &&
3448           y < (arrow.y + arrow.height));
3449 }
3450
3451 static gboolean
3452 auto_expand_timeout (gpointer data)
3453 {
3454   GtkTreeView *tree_view = GTK_TREE_VIEW (data);
3455   GtkTreePath *path;
3456
3457   if (tree_view->priv->prelight_node)
3458     {
3459       path = _gtk_tree_view_find_path (tree_view,
3460                                        tree_view->priv->prelight_tree,
3461                                        tree_view->priv->prelight_node);
3462
3463       if (tree_view->priv->prelight_node->children)
3464         gtk_tree_view_collapse_row (tree_view, path);
3465       else
3466         gtk_tree_view_expand_row (tree_view, path, FALSE);
3467
3468       gtk_tree_path_free (path);
3469     }
3470
3471   tree_view->priv->auto_expand_timeout = 0;
3472
3473   return FALSE;
3474 }
3475
3476 static void
3477 remove_auto_expand_timeout (GtkTreeView *tree_view)
3478 {
3479   if (tree_view->priv->auto_expand_timeout != 0)
3480     {
3481       g_source_remove (tree_view->priv->auto_expand_timeout);
3482       tree_view->priv->auto_expand_timeout = 0;
3483     }
3484 }
3485
3486 static void
3487 do_prelight (GtkTreeView *tree_view,
3488              GtkRBTree   *tree,
3489              GtkRBNode   *node,
3490              /* these are in bin_window coords */
3491              gint         x,
3492              gint         y)
3493 {
3494   if (tree_view->priv->prelight_tree == tree &&
3495       tree_view->priv->prelight_node == node)
3496     {
3497       /*  We are still on the same node,
3498           but we might need to take care of the arrow  */
3499
3500       if (tree && node && gtk_tree_view_draw_expanders (tree_view))
3501         {
3502           gboolean over_arrow;
3503
3504           over_arrow = coords_are_over_arrow (tree_view, tree, node, x, y);
3505
3506           if (over_arrow != tree_view->priv->arrow_prelit)
3507             {
3508               if (over_arrow)
3509                 tree_view->priv->arrow_prelit = TRUE;
3510               else
3511                 tree_view->priv->arrow_prelit = FALSE;
3512
3513               gtk_tree_view_queue_draw_arrow (tree_view, tree, node);
3514             }
3515         }
3516
3517       return;
3518     }
3519
3520   if (tree_view->priv->prelight_tree && tree_view->priv->prelight_node)
3521     {
3522       /*  Unprelight the old node and arrow  */
3523
3524       GTK_RBNODE_UNSET_FLAG (tree_view->priv->prelight_node,
3525                              GTK_RBNODE_IS_PRELIT);
3526
3527       if (tree_view->priv->arrow_prelit
3528           && gtk_tree_view_draw_expanders (tree_view))
3529         {
3530           tree_view->priv->arrow_prelit = FALSE;
3531
3532           gtk_tree_view_queue_draw_arrow (tree_view,
3533                                           tree_view->priv->prelight_tree,
3534                                           tree_view->priv->prelight_node);
3535         }
3536
3537       _gtk_tree_view_queue_draw_node (tree_view,
3538                                       tree_view->priv->prelight_tree,
3539                                       tree_view->priv->prelight_node,
3540                                       NULL);
3541     }
3542
3543
3544   if (tree_view->priv->hover_expand)
3545     remove_auto_expand_timeout (tree_view);
3546
3547   /*  Set the new prelight values  */
3548   tree_view->priv->prelight_node = node;
3549   tree_view->priv->prelight_tree = tree;
3550
3551   if (!node || !tree)
3552     return;
3553
3554   /*  Prelight the new node and arrow  */
3555
3556   if (gtk_tree_view_draw_expanders (tree_view)
3557       && coords_are_over_arrow (tree_view, tree, node, x, y))
3558     {
3559       tree_view->priv->arrow_prelit = TRUE;
3560
3561       gtk_tree_view_queue_draw_arrow (tree_view, tree, node);
3562     }
3563
3564   GTK_RBNODE_SET_FLAG (node, GTK_RBNODE_IS_PRELIT);
3565
3566   _gtk_tree_view_queue_draw_node (tree_view, tree, node, NULL);
3567
3568   if (tree_view->priv->hover_expand)
3569     {
3570       tree_view->priv->auto_expand_timeout =
3571         gdk_threads_add_timeout (AUTO_EXPAND_TIMEOUT, auto_expand_timeout, tree_view);
3572     }
3573 }
3574
3575 static void
3576 prelight_or_select (GtkTreeView *tree_view,
3577                     GtkRBTree   *tree,
3578                     GtkRBNode   *node,
3579                     /* these are in bin_window coords */
3580                     gint         x,
3581                     gint         y)
3582 {
3583   GtkSelectionMode mode = gtk_tree_selection_get_mode (tree_view->priv->selection);
3584
3585   if (tree_view->priv->hover_selection &&
3586       (mode == GTK_SELECTION_SINGLE || mode == GTK_SELECTION_BROWSE) &&
3587       !(tree_view->priv->edited_column &&
3588         gtk_cell_area_get_edit_widget
3589         (gtk_cell_layout_get_area (GTK_CELL_LAYOUT (tree_view->priv->edited_column)))))
3590     {
3591       if (node)
3592         {
3593           if (!GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_SELECTED))
3594             {
3595               GtkTreePath *path;
3596
3597               path = _gtk_tree_view_find_path (tree_view, tree, node);
3598               gtk_tree_selection_select_path (tree_view->priv->selection, path);
3599               if (GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_SELECTED))
3600                 {
3601                   tree_view->priv->draw_keyfocus = FALSE;
3602                   gtk_tree_view_real_set_cursor (tree_view, path, FALSE, FALSE);
3603                 }
3604               gtk_tree_path_free (path);
3605             }
3606         }
3607
3608       else if (mode == GTK_SELECTION_SINGLE)
3609         gtk_tree_selection_unselect_all (tree_view->priv->selection);
3610     }
3611
3612     do_prelight (tree_view, tree, node, x, y);
3613 }
3614
3615 static void
3616 ensure_unprelighted (GtkTreeView *tree_view)
3617 {
3618   do_prelight (tree_view,
3619                NULL, NULL,
3620                -1000, -1000); /* coords not possibly over an arrow */
3621
3622   g_assert (tree_view->priv->prelight_node == NULL);
3623 }
3624
3625 static void
3626 update_prelight (GtkTreeView *tree_view,
3627                  gint         x,
3628                  gint         y)
3629 {
3630   int new_y;
3631   GtkRBTree *tree;
3632   GtkRBNode *node;
3633
3634   if (tree_view->priv->tree == NULL)
3635     return;
3636
3637   if (x == -10000)
3638     {
3639       ensure_unprelighted (tree_view);
3640       return;
3641     }
3642
3643   new_y = TREE_WINDOW_Y_TO_RBTREE_Y (tree_view, y);
3644   if (new_y < 0)
3645     new_y = 0;
3646
3647   _gtk_rbtree_find_offset (tree_view->priv->tree,
3648                            new_y, &tree, &node);
3649
3650   if (node)
3651     prelight_or_select (tree_view, tree, node, x, y);
3652 }
3653
3654
3655
3656
3657 /* Our motion arrow is either a box (in the case of the original spot)
3658  * or an arrow.  It is expander_size wide.
3659  */
3660 /*
3661  * 11111111111111
3662  * 01111111111110
3663  * 00111111111100
3664  * 00011111111000
3665  * 00001111110000
3666  * 00000111100000
3667  * 00000111100000
3668  * 00000111100000
3669  * ~ ~ ~ ~ ~ ~ ~
3670  * 00000111100000
3671  * 00000111100000
3672  * 00000111100000
3673  * 00001111110000
3674  * 00011111111000
3675  * 00111111111100
3676  * 01111111111110
3677  * 11111111111111
3678  */
3679
3680 static void
3681 gtk_tree_view_motion_draw_column_motion_arrow (GtkTreeView *tree_view)
3682 {
3683   GtkTreeViewColumnReorder *reorder = tree_view->priv->cur_reorder;
3684   GtkWidget *widget = GTK_WIDGET (tree_view);
3685   cairo_surface_t *mask_image;
3686   cairo_region_t *mask_region;
3687   gint x;
3688   gint y;
3689   gint width;
3690   gint height;
3691   gint arrow_type = DRAG_COLUMN_WINDOW_STATE_UNSET;
3692   GdkWindowAttr attributes;
3693   guint attributes_mask;
3694   cairo_t *cr;
3695
3696   if (!reorder ||
3697       reorder->left_column == tree_view->priv->drag_column ||
3698       reorder->right_column == tree_view->priv->drag_column)
3699     arrow_type = DRAG_COLUMN_WINDOW_STATE_ORIGINAL;
3700   else if (reorder->left_column || reorder->right_column)
3701     {
3702       GtkAllocation left_allocation, right_allocation;
3703       GdkRectangle visible_rect;
3704       GtkWidget *button;
3705
3706       gtk_tree_view_get_visible_rect (tree_view, &visible_rect);
3707       if (reorder->left_column)
3708         {
3709           button = gtk_tree_view_column_get_button (reorder->left_column);
3710           gtk_widget_get_allocation (button, &left_allocation);
3711           x = left_allocation.x + left_allocation.width;
3712         }
3713       else
3714         {
3715           button = gtk_tree_view_column_get_button (reorder->right_column);
3716           gtk_widget_get_allocation (button, &right_allocation);
3717           x = right_allocation.x;
3718         }
3719
3720       if (x < visible_rect.x)
3721         arrow_type = DRAG_COLUMN_WINDOW_STATE_ARROW_LEFT;
3722       else if (x > visible_rect.x + visible_rect.width)
3723         arrow_type = DRAG_COLUMN_WINDOW_STATE_ARROW_RIGHT;
3724       else
3725         arrow_type = DRAG_COLUMN_WINDOW_STATE_ARROW;
3726     }
3727
3728   /* We want to draw the rectangle over the initial location. */
3729   if (arrow_type == DRAG_COLUMN_WINDOW_STATE_ORIGINAL)
3730     {
3731       if (tree_view->priv->drag_column_window_state != DRAG_COLUMN_WINDOW_STATE_ORIGINAL)
3732         {
3733           GtkAllocation drag_allocation;
3734           GtkWidget    *button;
3735
3736           if (tree_view->priv->drag_highlight_window)
3737             {
3738               gdk_window_set_user_data (tree_view->priv->drag_highlight_window,
3739                                         NULL);
3740               gdk_window_destroy (tree_view->priv->drag_highlight_window);
3741             }
3742
3743           button = gtk_tree_view_column_get_button (tree_view->priv->drag_column);
3744           attributes.window_type = GDK_WINDOW_CHILD;
3745           attributes.wclass = GDK_INPUT_OUTPUT;
3746           attributes.x = tree_view->priv->drag_column_x;
3747           attributes.y = 0;
3748           gtk_widget_get_allocation (button, &drag_allocation);
3749           width = attributes.width = drag_allocation.width;
3750           height = attributes.height = drag_allocation.height;
3751           attributes.visual = gtk_widget_get_visual (GTK_WIDGET (tree_view));
3752           attributes.event_mask = GDK_VISIBILITY_NOTIFY_MASK | GDK_EXPOSURE_MASK | GDK_POINTER_MOTION_MASK;
3753           attributes_mask = GDK_WA_X | GDK_WA_Y | GDK_WA_VISUAL;
3754           tree_view->priv->drag_highlight_window = gdk_window_new (tree_view->priv->header_window, &attributes, attributes_mask);
3755           gdk_window_set_user_data (tree_view->priv->drag_highlight_window, GTK_WIDGET (tree_view));
3756
3757           mask_image = cairo_image_surface_create (CAIRO_FORMAT_A1, width, height);
3758           cr = cairo_create (mask_image);
3759
3760           cairo_rectangle (cr, 1, 1, width - 2, height - 2);
3761           cairo_stroke (cr);
3762           cairo_destroy (cr);
3763
3764           mask_region = gdk_cairo_region_create_from_surface (mask_image);
3765           gdk_window_shape_combine_region (tree_view->priv->drag_highlight_window,
3766                                            mask_region, 0, 0);
3767
3768           cairo_region_destroy (mask_region);
3769           cairo_surface_destroy (mask_image);
3770
3771           tree_view->priv->drag_column_window_state = DRAG_COLUMN_WINDOW_STATE_ORIGINAL;
3772         }
3773     }
3774   else if (arrow_type == DRAG_COLUMN_WINDOW_STATE_ARROW)
3775     {
3776       GtkAllocation button_allocation;
3777       GtkWidget    *button;
3778
3779       width = tree_view->priv->expander_size;
3780
3781       /* Get x, y, width, height of arrow */
3782       gdk_window_get_origin (tree_view->priv->header_window, &x, &y);
3783       if (reorder->left_column)
3784         {
3785           button = gtk_tree_view_column_get_button (reorder->left_column);
3786           gtk_widget_get_allocation (button, &button_allocation);
3787           x += button_allocation.x + button_allocation.width - width/2;
3788           height = button_allocation.height;
3789         }
3790       else
3791         {
3792           button = gtk_tree_view_column_get_button (reorder->right_column);
3793           gtk_widget_get_allocation (button, &button_allocation);
3794           x += button_allocation.x - width/2;
3795           height = button_allocation.height;
3796         }
3797       y -= tree_view->priv->expander_size/2; /* The arrow takes up only half the space */
3798       height += tree_view->priv->expander_size;
3799
3800       /* Create the new window */
3801       if (tree_view->priv->drag_column_window_state != DRAG_COLUMN_WINDOW_STATE_ARROW)
3802         {
3803           if (tree_view->priv->drag_highlight_window)
3804             {
3805               gdk_window_set_user_data (tree_view->priv->drag_highlight_window,
3806                                         NULL);
3807               gdk_window_destroy (tree_view->priv->drag_highlight_window);
3808             }
3809
3810           attributes.window_type = GDK_WINDOW_TEMP;
3811           attributes.wclass = GDK_INPUT_OUTPUT;
3812           attributes.visual = gtk_widget_get_visual (GTK_WIDGET (tree_view));
3813           attributes.event_mask = GDK_VISIBILITY_NOTIFY_MASK | GDK_EXPOSURE_MASK | GDK_POINTER_MOTION_MASK;
3814           attributes_mask = GDK_WA_X | GDK_WA_Y | GDK_WA_VISUAL;
3815           attributes.x = x;
3816           attributes.y = y;
3817           attributes.width = width;
3818           attributes.height = height;
3819           tree_view->priv->drag_highlight_window = gdk_window_new (gtk_widget_get_root_window (widget),
3820                                                                    &attributes, attributes_mask);
3821           gdk_window_set_user_data (tree_view->priv->drag_highlight_window, GTK_WIDGET (tree_view));
3822
3823           mask_image = cairo_image_surface_create (CAIRO_FORMAT_A1, width, height);
3824
3825           cr = cairo_create (mask_image);
3826           cairo_move_to (cr, 0, 0);
3827           cairo_line_to (cr, width, 0);
3828           cairo_line_to (cr, width / 2., width / 2);
3829           cairo_move_to (cr, 0, height);
3830           cairo_line_to (cr, width, height);
3831           cairo_line_to (cr, width / 2., height - width / 2.);
3832           cairo_fill (cr);
3833           cairo_destroy (cr);
3834
3835           mask_region = gdk_cairo_region_create_from_surface (mask_image);
3836           gdk_window_shape_combine_region (tree_view->priv->drag_highlight_window,
3837                                            mask_region, 0, 0);
3838
3839           cairo_region_destroy (mask_region);
3840           cairo_surface_destroy (mask_image);
3841         }
3842
3843       tree_view->priv->drag_column_window_state = DRAG_COLUMN_WINDOW_STATE_ARROW;
3844       gdk_window_move (tree_view->priv->drag_highlight_window, x, y);
3845     }
3846   else if (arrow_type == DRAG_COLUMN_WINDOW_STATE_ARROW_LEFT ||
3847            arrow_type == DRAG_COLUMN_WINDOW_STATE_ARROW_RIGHT)
3848     {
3849       GtkAllocation allocation;
3850       GtkWidget    *button;
3851
3852       width = tree_view->priv->expander_size;
3853
3854       /* Get x, y, width, height of arrow */
3855       width = width/2; /* remember, the arrow only takes half the available width */
3856       gdk_window_get_origin (gtk_widget_get_window (widget),
3857                              &x, &y);
3858       if (arrow_type == DRAG_COLUMN_WINDOW_STATE_ARROW_RIGHT)
3859         {
3860           gtk_widget_get_allocation (widget, &allocation);
3861           x += allocation.width - width;
3862         }
3863
3864       if (reorder->left_column)
3865         {
3866           button = gtk_tree_view_column_get_button (reorder->left_column);
3867           gtk_widget_get_allocation (button, &allocation);
3868           height = allocation.height;
3869         }
3870       else
3871         {
3872           button = gtk_tree_view_column_get_button (reorder->right_column);
3873           gtk_widget_get_allocation (button, &allocation);
3874           height = allocation.height;
3875         }
3876
3877       y -= tree_view->priv->expander_size;
3878       height += 2*tree_view->priv->expander_size;
3879
3880       /* Create the new window */
3881       if (tree_view->priv->drag_column_window_state != DRAG_COLUMN_WINDOW_STATE_ARROW_LEFT &&
3882           tree_view->priv->drag_column_window_state != DRAG_COLUMN_WINDOW_STATE_ARROW_RIGHT)
3883         {
3884           if (tree_view->priv->drag_highlight_window)
3885             {
3886               gdk_window_set_user_data (tree_view->priv->drag_highlight_window,
3887                                         NULL);
3888               gdk_window_destroy (tree_view->priv->drag_highlight_window);
3889             }
3890
3891           attributes.window_type = GDK_WINDOW_TEMP;
3892           attributes.wclass = GDK_INPUT_OUTPUT;
3893           attributes.visual = gtk_widget_get_visual (GTK_WIDGET (tree_view));
3894           attributes.event_mask = GDK_VISIBILITY_NOTIFY_MASK | GDK_EXPOSURE_MASK | GDK_POINTER_MOTION_MASK;
3895           attributes_mask = GDK_WA_X | GDK_WA_Y | GDK_WA_VISUAL;
3896           attributes.x = x;
3897           attributes.y = y;
3898           attributes.width = width;
3899           attributes.height = height;
3900           tree_view->priv->drag_highlight_window = gdk_window_new (NULL, &attributes, attributes_mask);
3901           gdk_window_set_user_data (tree_view->priv->drag_highlight_window, GTK_WIDGET (tree_view));
3902
3903           mask_image = cairo_image_surface_create (CAIRO_FORMAT_A1, width, height);
3904
3905           cr = cairo_create (mask_image);
3906           /* mirror if we're on the left */
3907           if (arrow_type == DRAG_COLUMN_WINDOW_STATE_ARROW_LEFT)
3908             {
3909               cairo_translate (cr, width, 0);
3910               cairo_scale (cr, -1, 1);
3911             }
3912           cairo_move_to (cr, 0, 0);
3913           cairo_line_to (cr, width, width);
3914           cairo_line_to (cr, 0, tree_view->priv->expander_size);
3915           cairo_move_to (cr, 0, height);
3916           cairo_line_to (cr, width, height - width);
3917           cairo_line_to (cr, 0, height - tree_view->priv->expander_size);
3918           cairo_fill (cr);
3919           cairo_destroy (cr);
3920
3921           mask_region = gdk_cairo_region_create_from_surface (mask_image);
3922           gdk_window_shape_combine_region (tree_view->priv->drag_highlight_window,
3923                                            mask_region, 0, 0);
3924
3925           cairo_region_destroy (mask_region);
3926           cairo_surface_destroy (mask_image);
3927         }
3928
3929       tree_view->priv->drag_column_window_state = arrow_type;
3930       gdk_window_move (tree_view->priv->drag_highlight_window, x, y);
3931    }
3932   else
3933     {
3934       g_warning (G_STRLOC"Invalid GtkTreeViewColumnReorder struct");
3935       gdk_window_hide (tree_view->priv->drag_highlight_window);
3936       return;
3937     }
3938
3939   gdk_window_show (tree_view->priv->drag_highlight_window);
3940   gdk_window_raise (tree_view->priv->drag_highlight_window);
3941 }
3942
3943 static gboolean
3944 gtk_tree_view_motion_resize_column (GtkWidget      *widget,
3945                                     GdkEventMotion *event)
3946 {
3947   gint x;
3948   gint new_width;
3949   GtkTreeViewColumn *column;
3950   GtkTreeView *tree_view = GTK_TREE_VIEW (widget);
3951
3952   column = gtk_tree_view_get_column (tree_view, tree_view->priv->drag_pos);
3953
3954   if (event->is_hint || event->window != gtk_widget_get_window (widget))
3955     gdk_window_get_device_position (gtk_widget_get_window (widget),
3956                                     gdk_event_get_device ((GdkEvent *) event),
3957                                     &x, NULL, NULL);
3958   else
3959     x = event->x;
3960
3961   if (tree_view->priv->hadjustment)
3962     x += gtk_adjustment_get_value (tree_view->priv->hadjustment);
3963
3964   new_width = gtk_tree_view_new_column_width (tree_view,
3965                                               tree_view->priv->drag_pos, &x);
3966   if (x != tree_view->priv->x_drag &&
3967       (new_width != gtk_tree_view_column_get_fixed_width (column)))
3968     {
3969       _gtk_tree_view_column_set_use_resized_width (column, TRUE);
3970
3971       if (gtk_tree_view_column_get_expand (column))
3972         new_width -= tree_view->priv->last_extra_space_per_column;
3973
3974       _gtk_tree_view_column_set_resized_width (column, new_width);
3975
3976
3977       gtk_widget_queue_resize (widget);
3978     }
3979
3980   return FALSE;
3981 }
3982
3983
3984 static void
3985 gtk_tree_view_update_current_reorder (GtkTreeView *tree_view,
3986                                       GdkEvent    *event)
3987 {
3988   GtkTreeViewColumnReorder *reorder = NULL;
3989   GList *list;
3990   gint mouse_x;
3991
3992   gdk_window_get_device_position (tree_view->priv->header_window,
3993                                   gdk_event_get_device (event),
3994                                   &mouse_x, NULL, NULL);
3995   for (list = tree_view->priv->column_drag_info; list; list = list->next)
3996     {
3997       reorder = (GtkTreeViewColumnReorder *) list->data;
3998       if (mouse_x >= reorder->left_align && mouse_x < reorder->right_align)
3999         break;
4000       reorder = NULL;
4001     }
4002
4003   /*  if (reorder && reorder == tree_view->priv->cur_reorder)
4004       return;*/
4005
4006   tree_view->priv->cur_reorder = reorder;
4007   gtk_tree_view_motion_draw_column_motion_arrow (tree_view);
4008 }
4009
4010 static void
4011 gtk_tree_view_vertical_autoscroll (GtkTreeView *tree_view)
4012 {
4013   GdkRectangle visible_rect;
4014   gint y;
4015   gint offset;
4016
4017   gdk_window_get_device_position (tree_view->priv->bin_window,
4018                                   gdk_device_manager_get_client_pointer (
4019                                     gdk_display_get_device_manager (
4020                                       gtk_widget_get_display (GTK_WIDGET (tree_view)))),
4021                                   NULL, &y, NULL);
4022   y += tree_view->priv->dy;
4023
4024   gtk_tree_view_get_visible_rect (tree_view, &visible_rect);
4025
4026   /* see if we are near the edge. */
4027   offset = y - (visible_rect.y + 2 * SCROLL_EDGE_SIZE);
4028   if (offset > 0)
4029     {
4030       offset = y - (visible_rect.y + visible_rect.height - 2 * SCROLL_EDGE_SIZE);
4031       if (offset < 0)
4032         return;
4033     }
4034
4035   gtk_adjustment_set_value (tree_view->priv->vadjustment,
4036                             MAX (gtk_adjustment_get_value (tree_view->priv->vadjustment) + offset, 0.0));
4037 }
4038
4039 static gboolean
4040 gtk_tree_view_horizontal_autoscroll (GtkTreeView *tree_view,
4041                                      GdkEvent    *event)
4042 {
4043   GdkRectangle visible_rect;
4044   gint x;
4045   gint offset;
4046
4047   gdk_window_get_device_position (tree_view->priv->bin_window,
4048                                   gdk_event_get_device (event),
4049                                   &x, NULL, NULL);
4050
4051   gtk_tree_view_get_visible_rect (tree_view, &visible_rect);
4052
4053   /* See if we are near the edge. */
4054   offset = x - (visible_rect.x + SCROLL_EDGE_SIZE);
4055   if (offset > 0)
4056     {
4057       offset = x - (visible_rect.x + visible_rect.width - SCROLL_EDGE_SIZE);
4058       if (offset < 0)
4059         return TRUE;
4060     }
4061   offset = offset/3;
4062
4063   gtk_adjustment_set_value (tree_view->priv->hadjustment,
4064                             MAX (gtk_adjustment_get_value (tree_view->priv->hadjustment) + offset, 0.0));
4065
4066   return TRUE;
4067
4068 }
4069
4070 static gboolean
4071 gtk_tree_view_motion_drag_column (GtkWidget      *widget,
4072                                   GdkEventMotion *event)
4073 {
4074   GtkAllocation allocation, button_allocation;
4075   GtkTreeView *tree_view = (GtkTreeView *) widget;
4076   GtkTreeViewColumn *column = tree_view->priv->drag_column;
4077   GtkWidget *button;
4078   gint x, y;
4079
4080   /* Sanity Check */
4081   if ((column == NULL) ||
4082       (event->window != tree_view->priv->drag_window))
4083     return FALSE;
4084
4085   button = gtk_tree_view_column_get_button (column);
4086
4087   /* Handle moving the header */
4088   gdk_window_get_position (tree_view->priv->drag_window, &x, &y);
4089   gtk_widget_get_allocation (widget, &allocation);
4090   gtk_widget_get_allocation (button, &button_allocation);
4091   x = CLAMP (x + (gint)event->x - _gtk_tree_view_column_get_drag_x (column), 0,
4092              MAX (tree_view->priv->width, allocation.width) - button_allocation.width);
4093   gdk_window_move (tree_view->priv->drag_window, x, y);
4094
4095   /* autoscroll, if needed */
4096   gtk_tree_view_horizontal_autoscroll (tree_view, (GdkEvent *) event);
4097   /* Update the current reorder position and arrow; */
4098   gtk_tree_view_update_current_reorder (tree_view, (GdkEvent *) event);
4099
4100   return TRUE;
4101 }
4102
4103 static void
4104 gtk_tree_view_stop_rubber_band (GtkTreeView *tree_view)
4105 {
4106   remove_scroll_timeout (tree_view);
4107   gtk_grab_remove (GTK_WIDGET (tree_view));
4108
4109   if (tree_view->priv->rubber_band_status == RUBBER_BAND_ACTIVE)
4110     {
4111       GtkTreePath *tmp_path;
4112
4113       gtk_widget_queue_draw (GTK_WIDGET (tree_view));
4114
4115       /* The anchor path should be set to the start path */
4116       tmp_path = _gtk_tree_view_find_path (tree_view,
4117                                            tree_view->priv->rubber_band_start_tree,
4118                                            tree_view->priv->rubber_band_start_node);
4119
4120       if (tree_view->priv->anchor)
4121         gtk_tree_row_reference_free (tree_view->priv->anchor);
4122
4123       tree_view->priv->anchor =
4124         gtk_tree_row_reference_new_proxy (G_OBJECT (tree_view),
4125                                           tree_view->priv->model,
4126                                           tmp_path);
4127
4128       gtk_tree_path_free (tmp_path);
4129
4130       /* ... and the cursor to the end path */
4131       tmp_path = _gtk_tree_view_find_path (tree_view,
4132                                            tree_view->priv->rubber_band_end_tree,
4133                                            tree_view->priv->rubber_band_end_node);
4134       gtk_tree_view_real_set_cursor (GTK_TREE_VIEW (tree_view), tmp_path, FALSE, FALSE);
4135       gtk_tree_path_free (tmp_path);
4136
4137       _gtk_tree_selection_emit_changed (tree_view->priv->selection);
4138     }
4139
4140   /* Clear status variables */
4141   tree_view->priv->rubber_band_status = RUBBER_BAND_OFF;
4142   tree_view->priv->rubber_band_extend = FALSE;
4143   tree_view->priv->rubber_band_modify = FALSE;
4144
4145   tree_view->priv->rubber_band_start_node = NULL;
4146   tree_view->priv->rubber_band_start_tree = NULL;
4147   tree_view->priv->rubber_band_end_node = NULL;
4148   tree_view->priv->rubber_band_end_tree = NULL;
4149 }
4150
4151 static void
4152 gtk_tree_view_update_rubber_band_selection_range (GtkTreeView *tree_view,
4153                                                  GtkRBTree   *start_tree,
4154                                                  GtkRBNode   *start_node,
4155                                                  GtkRBTree   *end_tree,
4156                                                  GtkRBNode   *end_node,
4157                                                  gboolean     select,
4158                                                  gboolean     skip_start,
4159                                                  gboolean     skip_end)
4160 {
4161   if (start_node == end_node)
4162     return;
4163
4164   /* We skip the first node and jump inside the loop */
4165   if (skip_start)
4166     goto skip_first;
4167
4168   do
4169     {
4170       /* Small optimization by assuming insensitive nodes are never
4171        * selected.
4172        */
4173       if (!GTK_RBNODE_FLAG_SET (start_node, GTK_RBNODE_IS_SELECTED))
4174         {
4175           GtkTreePath *path;
4176           gboolean selectable;
4177
4178           path = _gtk_tree_view_find_path (tree_view, start_tree, start_node);
4179           selectable = _gtk_tree_selection_row_is_selectable (tree_view->priv->selection, start_node, path);
4180           gtk_tree_path_free (path);
4181
4182           if (!selectable)
4183             goto node_not_selectable;
4184         }
4185
4186       if (select)
4187         {
4188           if (tree_view->priv->rubber_band_extend)
4189             GTK_RBNODE_SET_FLAG (start_node, GTK_RBNODE_IS_SELECTED);
4190           else if (tree_view->priv->rubber_band_modify)
4191             {
4192               /* Toggle the selection state */
4193               if (GTK_RBNODE_FLAG_SET (start_node, GTK_RBNODE_IS_SELECTED))
4194                 GTK_RBNODE_UNSET_FLAG (start_node, GTK_RBNODE_IS_SELECTED);
4195               else
4196                 GTK_RBNODE_SET_FLAG (start_node, GTK_RBNODE_IS_SELECTED);
4197             }
4198           else
4199             GTK_RBNODE_SET_FLAG (start_node, GTK_RBNODE_IS_SELECTED);
4200         }
4201       else
4202         {
4203           /* Mirror the above */
4204           if (tree_view->priv->rubber_band_extend)
4205             GTK_RBNODE_UNSET_FLAG (start_node, GTK_RBNODE_IS_SELECTED);
4206           else if (tree_view->priv->rubber_band_modify)
4207             {
4208               /* Toggle the selection state */
4209               if (GTK_RBNODE_FLAG_SET (start_node, GTK_RBNODE_IS_SELECTED))
4210                 GTK_RBNODE_UNSET_FLAG (start_node, GTK_RBNODE_IS_SELECTED);
4211               else
4212                 GTK_RBNODE_SET_FLAG (start_node, GTK_RBNODE_IS_SELECTED);
4213             }
4214           else
4215             GTK_RBNODE_UNSET_FLAG (start_node, GTK_RBNODE_IS_SELECTED);
4216         }
4217
4218       _gtk_tree_view_queue_draw_node (tree_view, start_tree, start_node, NULL);
4219
4220 node_not_selectable:
4221       if (start_node == end_node)
4222         break;
4223
4224 skip_first:
4225
4226       if (start_node->children)
4227         {
4228           start_tree = start_node->children;
4229           start_node = start_tree->root;
4230           while (start_node->left != start_tree->nil)
4231             start_node = start_node->left;
4232         }
4233       else
4234         {
4235           _gtk_rbtree_next_full (start_tree, start_node, &start_tree, &start_node);
4236
4237           if (!start_tree)
4238             /* Ran out of tree */
4239             break;
4240         }
4241
4242       if (skip_end && start_node == end_node)
4243         break;
4244     }
4245   while (TRUE);
4246 }
4247
4248 static void
4249 gtk_tree_view_update_rubber_band_selection (GtkTreeView *tree_view)
4250 {
4251   GtkRBTree *start_tree, *end_tree;
4252   GtkRBNode *start_node, *end_node;
4253
4254   _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);
4255   _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);
4256
4257   /* Handle the start area first */
4258   if (!tree_view->priv->rubber_band_start_node)
4259     {
4260       gtk_tree_view_update_rubber_band_selection_range (tree_view,
4261                                                        start_tree,
4262                                                        start_node,
4263                                                        end_tree,
4264                                                        end_node,
4265                                                        TRUE,
4266                                                        FALSE,
4267                                                        FALSE);
4268     }
4269   else if (_gtk_rbtree_node_find_offset (start_tree, start_node) <
4270            _gtk_rbtree_node_find_offset (tree_view->priv->rubber_band_start_tree, tree_view->priv->rubber_band_start_node))
4271     {
4272       /* New node is above the old one; selection became bigger */
4273       gtk_tree_view_update_rubber_band_selection_range (tree_view,
4274                                                        start_tree,
4275                                                        start_node,
4276                                                        tree_view->priv->rubber_band_start_tree,
4277                                                        tree_view->priv->rubber_band_start_node,
4278                                                        TRUE,
4279                                                        FALSE,
4280                                                        TRUE);
4281     }
4282   else if (_gtk_rbtree_node_find_offset (start_tree, start_node) >
4283            _gtk_rbtree_node_find_offset (tree_view->priv->rubber_band_start_tree, tree_view->priv->rubber_band_start_node))
4284     {
4285       /* New node is below the old one; selection became smaller */
4286       gtk_tree_view_update_rubber_band_selection_range (tree_view,
4287                                                        tree_view->priv->rubber_band_start_tree,
4288                                                        tree_view->priv->rubber_band_start_node,
4289                                                        start_tree,
4290                                                        start_node,
4291                                                        FALSE,
4292                                                        FALSE,
4293                                                        TRUE);
4294     }
4295
4296   tree_view->priv->rubber_band_start_tree = start_tree;
4297   tree_view->priv->rubber_band_start_node = start_node;
4298
4299   /* Next, handle the end area */
4300   if (!tree_view->priv->rubber_band_end_node)
4301     {
4302       /* In the event this happens, start_node was also NULL; this case is
4303        * handled above.
4304        */
4305     }
4306   else if (!end_node)
4307     {
4308       /* Find the last node in the tree */
4309       _gtk_rbtree_find_offset (tree_view->priv->tree, tree_view->priv->height - 1,
4310                                &end_tree, &end_node);
4311
4312       /* Selection reached end of the tree */
4313       gtk_tree_view_update_rubber_band_selection_range (tree_view,
4314                                                        tree_view->priv->rubber_band_end_tree,
4315                                                        tree_view->priv->rubber_band_end_node,
4316                                                        end_tree,
4317                                                        end_node,
4318                                                        TRUE,
4319                                                        TRUE,
4320                                                        FALSE);
4321     }
4322   else if (_gtk_rbtree_node_find_offset (end_tree, end_node) >
4323            _gtk_rbtree_node_find_offset (tree_view->priv->rubber_band_end_tree, tree_view->priv->rubber_band_end_node))
4324     {
4325       /* New node is below the old one; selection became bigger */
4326       gtk_tree_view_update_rubber_band_selection_range (tree_view,
4327                                                        tree_view->priv->rubber_band_end_tree,
4328                                                        tree_view->priv->rubber_band_end_node,
4329                                                        end_tree,
4330                                                        end_node,
4331                                                        TRUE,
4332                                                        TRUE,
4333                                                        FALSE);
4334     }
4335   else if (_gtk_rbtree_node_find_offset (end_tree, end_node) <
4336            _gtk_rbtree_node_find_offset (tree_view->priv->rubber_band_end_tree, tree_view->priv->rubber_band_end_node))
4337     {
4338       /* New node is above the old one; selection became smaller */
4339       gtk_tree_view_update_rubber_band_selection_range (tree_view,
4340                                                        end_tree,
4341                                                        end_node,
4342                                                        tree_view->priv->rubber_band_end_tree,
4343                                                        tree_view->priv->rubber_band_end_node,
4344                                                        FALSE,
4345                                                        TRUE,
4346                                                        FALSE);
4347     }
4348
4349   tree_view->priv->rubber_band_end_tree = end_tree;
4350   tree_view->priv->rubber_band_end_node = end_node;
4351 }
4352
4353 static void
4354 gtk_tree_view_update_rubber_band (GtkTreeView *tree_view)
4355 {
4356   gint x, y;
4357   GdkRectangle old_area;
4358   GdkRectangle new_area;
4359   GdkRectangle common;
4360   cairo_region_t *invalid_region;
4361
4362   old_area.x = MIN (tree_view->priv->press_start_x, tree_view->priv->rubber_band_x);
4363   old_area.y = MIN (tree_view->priv->press_start_y, tree_view->priv->rubber_band_y) - tree_view->priv->dy;
4364   old_area.width = ABS (tree_view->priv->rubber_band_x - tree_view->priv->press_start_x) + 1;
4365   old_area.height = ABS (tree_view->priv->rubber_band_y - tree_view->priv->press_start_y) + 1;
4366
4367   gdk_window_get_device_position (tree_view->priv->bin_window,
4368                                   gdk_device_manager_get_client_pointer (
4369                                     gdk_display_get_device_manager (
4370                                       gtk_widget_get_display (GTK_WIDGET (tree_view)))),
4371                                   &x, &y, NULL);
4372
4373   x = MAX (x, 0);
4374   y = MAX (y, 0) + tree_view->priv->dy;
4375
4376   new_area.x = MIN (tree_view->priv->press_start_x, x);
4377   new_area.y = MIN (tree_view->priv->press_start_y, y) - tree_view->priv->dy;
4378   new_area.width = ABS (x - tree_view->priv->press_start_x) + 1;
4379   new_area.height = ABS (y - tree_view->priv->press_start_y) + 1;
4380
4381   invalid_region = cairo_region_create_rectangle (&old_area);
4382   cairo_region_union_rectangle (invalid_region, &new_area);
4383
4384   gdk_rectangle_intersect (&old_area, &new_area, &common);
4385   if (common.width > 2 && common.height > 2)
4386     {
4387       cairo_region_t *common_region;
4388
4389       /* make sure the border is invalidated */
4390       common.x += 1;
4391       common.y += 1;
4392       common.width -= 2;
4393       common.height -= 2;
4394
4395       common_region = cairo_region_create_rectangle (&common);
4396
4397       cairo_region_subtract (invalid_region, common_region);
4398       cairo_region_destroy (common_region);
4399     }
4400
4401   gdk_window_invalidate_region (tree_view->priv->bin_window, invalid_region, TRUE);
4402
4403   cairo_region_destroy (invalid_region);
4404
4405   tree_view->priv->rubber_band_x = x;
4406   tree_view->priv->rubber_band_y = y;
4407
4408   gtk_tree_view_update_rubber_band_selection (tree_view);
4409 }
4410
4411 static void
4412 gtk_tree_view_paint_rubber_band (GtkTreeView  *tree_view,
4413                                  cairo_t      *cr)
4414 {
4415   GdkRectangle rect;
4416   GtkStyleContext *context;
4417
4418   cairo_save (cr);
4419
4420   context = gtk_widget_get_style_context (GTK_WIDGET (tree_view));
4421
4422   gtk_style_context_save (context);
4423   gtk_style_context_add_class (context, GTK_STYLE_CLASS_RUBBERBAND);
4424
4425   rect.x = MIN (tree_view->priv->press_start_x, tree_view->priv->rubber_band_x);
4426   rect.y = MIN (tree_view->priv->press_start_y, tree_view->priv->rubber_band_y) - tree_view->priv->dy;
4427   rect.width = ABS (tree_view->priv->press_start_x - tree_view->priv->rubber_band_x) + 1;
4428   rect.height = ABS (tree_view->priv->press_start_y - tree_view->priv->rubber_band_y) + 1;
4429
4430   gdk_cairo_rectangle (cr, &rect);
4431   cairo_clip (cr);
4432
4433   gtk_render_background (context, cr,
4434                          rect.x, rect.y,
4435                          rect.width, rect.height);
4436   gtk_render_frame (context, cr,
4437                     rect.x, rect.y,
4438                     rect.width, rect.height);
4439
4440   gtk_style_context_restore (context);
4441   cairo_restore (cr);
4442 }
4443
4444 static gboolean
4445 gtk_tree_view_motion_bin_window (GtkWidget      *widget,
4446                                  GdkEventMotion *event)
4447 {
4448   GtkTreeView *tree_view;
4449   GtkRBTree *tree;
4450   GtkRBNode *node;
4451   gint new_y;
4452
4453   tree_view = (GtkTreeView *) widget;
4454
4455   if (tree_view->priv->tree == NULL)
4456     return FALSE;
4457
4458   if (tree_view->priv->rubber_band_status == RUBBER_BAND_MAYBE_START)
4459     {
4460       gtk_grab_add (GTK_WIDGET (tree_view));
4461       gtk_tree_view_update_rubber_band (tree_view);
4462
4463       tree_view->priv->rubber_band_status = RUBBER_BAND_ACTIVE;
4464     }
4465   else if (tree_view->priv->rubber_band_status == RUBBER_BAND_ACTIVE)
4466     {
4467       gtk_tree_view_update_rubber_band (tree_view);
4468
4469       add_scroll_timeout (tree_view);
4470     }
4471
4472   /* only check for an initiated drag when a button is pressed */
4473   if (tree_view->priv->pressed_button >= 0
4474       && !tree_view->priv->rubber_band_status)
4475     gtk_tree_view_maybe_begin_dragging_row (tree_view, event);
4476
4477   new_y = TREE_WINDOW_Y_TO_RBTREE_Y(tree_view, event->y);
4478   if (new_y < 0)
4479     new_y = 0;
4480
4481   _gtk_rbtree_find_offset (tree_view->priv->tree, new_y, &tree, &node);
4482
4483   /* If we are currently pressing down a button, we don't want to prelight anything else. */
4484   if ((tree_view->priv->button_pressed_node != NULL) &&
4485       (tree_view->priv->button_pressed_node != node))
4486     node = NULL;
4487
4488   tree_view->priv->event_last_x = event->x;
4489   tree_view->priv->event_last_y = event->y;
4490
4491   prelight_or_select (tree_view, tree, node, event->x, event->y);
4492
4493   return TRUE;
4494 }
4495
4496 static gboolean
4497 gtk_tree_view_motion (GtkWidget      *widget,
4498                       GdkEventMotion *event)
4499 {
4500   GtkTreeView *tree_view;
4501
4502   tree_view = (GtkTreeView *) widget;
4503
4504   /* Resizing a column */
4505   if (tree_view->priv->in_column_resize)
4506     return gtk_tree_view_motion_resize_column (widget, event);
4507
4508   /* Drag column */
4509   if (tree_view->priv->in_column_drag)
4510     return gtk_tree_view_motion_drag_column (widget, event);
4511
4512   /* Sanity check it */
4513   if (event->window == tree_view->priv->bin_window)
4514     return gtk_tree_view_motion_bin_window (widget, event);
4515
4516   return FALSE;
4517 }
4518
4519 /* Invalidate the focus rectangle near the edge of the bin_window; used when
4520  * the tree is empty.
4521  */
4522 static void
4523 invalidate_empty_focus (GtkTreeView *tree_view)
4524 {
4525   GdkRectangle area;
4526
4527   if (!gtk_widget_has_focus (GTK_WIDGET (tree_view)))
4528     return;
4529
4530   area.x = 0;
4531   area.y = 0;
4532   area.width = gdk_window_get_width (tree_view->priv->bin_window);
4533   area.height = gdk_window_get_height (tree_view->priv->bin_window);
4534   gdk_window_invalidate_rect (tree_view->priv->bin_window, &area, FALSE);
4535 }
4536
4537 /* Draws a focus rectangle near the edge of the bin_window; used when the tree
4538  * is empty.
4539  */
4540 static void
4541 draw_empty_focus (GtkTreeView *tree_view, cairo_t *cr)
4542 {
4543   GtkWidget *widget = GTK_WIDGET (tree_view);
4544   gint w, h;
4545
4546   if (!gtk_widget_has_visible_focus (widget))
4547     return;
4548
4549   w = gdk_window_get_width (tree_view->priv->bin_window) - 2;
4550   h = gdk_window_get_height (tree_view->priv->bin_window) - 2;
4551
4552   if (w > 0 && h > 0)
4553     {
4554       GtkStyleContext *context;
4555       GtkStateFlags state;
4556
4557       context = gtk_widget_get_style_context (widget);
4558       state = gtk_widget_get_state_flags (widget);
4559
4560       gtk_style_context_save (context);
4561       gtk_style_context_set_state (context, state);
4562
4563       gtk_render_focus (context, cr, 1, 1, w, h);
4564
4565       gtk_style_context_restore (context);
4566     }
4567 }
4568
4569 typedef enum {
4570   GTK_TREE_VIEW_GRID_LINE,
4571   GTK_TREE_VIEW_TREE_LINE,
4572   GTK_TREE_VIEW_FOREGROUND_LINE
4573 } GtkTreeViewLineType;
4574
4575 static void
4576 gtk_tree_view_draw_line (GtkTreeView         *tree_view,
4577                          cairo_t             *cr,
4578                          GtkTreeViewLineType  type,
4579                          int                  x1,
4580                          int                  y1,
4581                          int                  x2,
4582                          int                  y2)
4583 {
4584   cairo_save (cr);
4585
4586   switch (type)
4587     {
4588     case GTK_TREE_VIEW_TREE_LINE:
4589       cairo_set_source_rgb (cr, 0, 0, 0);
4590       cairo_set_line_width (cr, tree_view->priv->tree_line_width);
4591       if (tree_view->priv->tree_line_dashes[0])
4592         cairo_set_dash (cr,
4593                         tree_view->priv->tree_line_dashes,
4594                         2, 0.5);
4595       break;
4596     case GTK_TREE_VIEW_GRID_LINE:
4597       cairo_set_source_rgb (cr, 0, 0, 0);
4598       cairo_set_line_width (cr, tree_view->priv->grid_line_width);
4599       if (tree_view->priv->grid_line_dashes[0])
4600         cairo_set_dash (cr,
4601                         tree_view->priv->grid_line_dashes,
4602                         2, 0.5);
4603       break;
4604     default:
4605       g_assert_not_reached ();
4606       /* fall through */
4607     case GTK_TREE_VIEW_FOREGROUND_LINE:
4608       {
4609         GtkStyleContext *context;
4610         GtkStateFlags state;
4611         GdkRGBA color;
4612
4613         context = gtk_widget_get_style_context (GTK_WIDGET (tree_view));
4614         state = gtk_widget_get_state_flags (GTK_WIDGET (tree_view));
4615
4616         cairo_set_line_width (cr, 1.0);
4617         gtk_style_context_get_color (context, state, &color);
4618         gdk_cairo_set_source_rgba (cr, &color);
4619       }
4620
4621       break;
4622     }
4623
4624   cairo_move_to (cr, x1 + 0.5, y1 + 0.5);
4625   cairo_line_to (cr, x2 + 0.5, y2 + 0.5);
4626   cairo_stroke (cr);
4627
4628   cairo_restore (cr);
4629 }
4630
4631 static void
4632 gtk_tree_view_draw_grid_lines (GtkTreeView    *tree_view,
4633                                cairo_t        *cr,
4634                                gint            n_visible_columns)
4635 {
4636   GList *list = tree_view->priv->columns;
4637   gint i = 0;
4638   gint current_x = 0;
4639
4640   if (tree_view->priv->grid_lines != GTK_TREE_VIEW_GRID_LINES_VERTICAL
4641       && tree_view->priv->grid_lines != GTK_TREE_VIEW_GRID_LINES_BOTH)
4642     return;
4643
4644   /* Only draw the lines for visible rows and columns */
4645   for (list = tree_view->priv->columns; list; list = list->next, i++)
4646     {
4647       GtkTreeViewColumn *column = list->data;
4648
4649       /* We don't want a line for the last column */
4650       if (i == n_visible_columns - 1)
4651         break;
4652
4653       if (!gtk_tree_view_column_get_visible (column))
4654         continue;
4655
4656       current_x += gtk_tree_view_column_get_width (column);
4657
4658       gtk_tree_view_draw_line (tree_view, cr,
4659                                GTK_TREE_VIEW_GRID_LINE,
4660                                current_x - 1, 0,
4661                                current_x - 1, tree_view->priv->height);
4662     }
4663 }
4664
4665 /* Warning: Very scary function.
4666  * Modify at your own risk
4667  *
4668  * KEEP IN SYNC WITH gtk_tree_view_create_row_drag_icon()!
4669  * FIXME: It's not...
4670  */
4671 static gboolean
4672 gtk_tree_view_bin_draw (GtkWidget      *widget,
4673                         cairo_t        *cr)
4674 {
4675   GtkTreeView *tree_view = GTK_TREE_VIEW (widget);
4676   GtkTreePath *path;
4677   GtkRBTree *tree;
4678   GList *list;
4679   GtkRBNode *node;
4680   GtkRBNode *cursor = NULL;
4681   GtkRBTree *cursor_tree = NULL;
4682   GtkRBNode *drag_highlight = NULL;
4683   GtkRBTree *drag_highlight_tree = NULL;
4684   GtkTreeIter iter;
4685   gint new_y;
4686   gint y_offset, cell_offset;
4687   gint max_height;
4688   gint depth;
4689   GdkRectangle background_area;
4690   GdkRectangle cell_area;
4691   GdkRectangle clip;
4692   guint flags;
4693   gint highlight_x;
4694   gint expander_cell_width;
4695   gint bin_window_width;
4696   gint bin_window_height;
4697   GtkTreePath *cursor_path;
4698   GtkTreePath *drag_dest_path;
4699   GList *first_column, *last_column;
4700   gint vertical_separator;
4701   gint horizontal_separator;
4702   gint focus_line_width;
4703   gboolean allow_rules;
4704   gboolean has_can_focus_cell;
4705   gboolean rtl;
4706   gint n_visible_columns;
4707   gint grid_line_width;
4708   gboolean draw_vgrid_lines, draw_hgrid_lines;
4709   GtkStyleContext *context;
4710   GtkStateFlags state;
4711   gboolean parity;
4712
4713   rtl = (gtk_widget_get_direction (widget) == GTK_TEXT_DIR_RTL);
4714   context = gtk_widget_get_style_context (widget);
4715   state = gtk_widget_get_state_flags (widget);
4716
4717   gtk_widget_style_get (widget,
4718                         "horizontal-separator", &horizontal_separator,
4719                         "vertical-separator", &vertical_separator,
4720                         "allow-rules", &allow_rules,
4721                         "focus-line-width", &focus_line_width,
4722                         NULL);
4723
4724   if (tree_view->priv->tree == NULL)
4725     {
4726       draw_empty_focus (tree_view, cr);
4727       return TRUE;
4728     }
4729
4730   bin_window_width = gdk_window_get_width (tree_view->priv->bin_window);
4731   bin_window_height = gdk_window_get_height (tree_view->priv->bin_window);
4732   cairo_rectangle (cr, 0, 0, bin_window_width, bin_window_height);
4733   cairo_clip (cr);
4734   if (!gdk_cairo_get_clip_rectangle (cr, &clip))
4735     return TRUE;
4736
4737   new_y = TREE_WINDOW_Y_TO_RBTREE_Y (tree_view, clip.y);
4738
4739   if (new_y < 0)
4740     new_y = 0;
4741   y_offset = -_gtk_rbtree_find_offset (tree_view->priv->tree, new_y, &tree, &node);
4742
4743   if (tree_view->priv->height < bin_window_height)
4744     {
4745       gtk_style_context_save (context);
4746       gtk_style_context_set_state (context, state);
4747       gtk_style_context_add_class (context, GTK_STYLE_CLASS_CELL);
4748
4749       gtk_render_background (context, cr,
4750                              0, tree_view->priv->height,
4751                              bin_window_width,
4752                              bin_window_height - tree_view->priv->height);
4753
4754       gtk_style_context_restore (context);
4755     }
4756
4757   if (node == NULL)
4758     return TRUE;
4759
4760   /* find the path for the node */
4761   path = _gtk_tree_view_find_path ((GtkTreeView *)widget,
4762                                    tree,
4763                                    node);
4764   gtk_tree_model_get_iter (tree_view->priv->model,
4765                            &iter,
4766                            path);
4767   depth = gtk_tree_path_get_depth (path);
4768   gtk_tree_path_free (path);
4769
4770   cursor_path = NULL;
4771   drag_dest_path = NULL;
4772
4773   if (tree_view->priv->cursor)
4774     cursor_path = gtk_tree_row_reference_get_path (tree_view->priv->cursor);
4775
4776   if (cursor_path)
4777     _gtk_tree_view_find_node (tree_view, cursor_path,
4778                               &cursor_tree, &cursor);
4779
4780   if (tree_view->priv->drag_dest_row)
4781     drag_dest_path = gtk_tree_row_reference_get_path (tree_view->priv->drag_dest_row);
4782
4783   if (drag_dest_path)
4784     _gtk_tree_view_find_node (tree_view, drag_dest_path,
4785                               &drag_highlight_tree, &drag_highlight);
4786
4787   draw_vgrid_lines =
4788     tree_view->priv->grid_lines == GTK_TREE_VIEW_GRID_LINES_VERTICAL
4789     || tree_view->priv->grid_lines == GTK_TREE_VIEW_GRID_LINES_BOTH;
4790   draw_hgrid_lines =
4791     tree_view->priv->grid_lines == GTK_TREE_VIEW_GRID_LINES_HORIZONTAL
4792     || tree_view->priv->grid_lines == GTK_TREE_VIEW_GRID_LINES_BOTH;
4793
4794   if (draw_vgrid_lines || draw_hgrid_lines)
4795     gtk_widget_style_get (widget, "grid-line-width", &grid_line_width, NULL);
4796
4797   n_visible_columns = 0;
4798   for (list = tree_view->priv->columns; list; list = list->next)
4799     {
4800       if (!gtk_tree_view_column_get_visible (GTK_TREE_VIEW_COLUMN (list->data)))
4801         continue;
4802       n_visible_columns ++;
4803     }
4804
4805   /* Find the last column */
4806   for (last_column = g_list_last (tree_view->priv->columns);
4807        last_column &&
4808        !(gtk_tree_view_column_get_visible (GTK_TREE_VIEW_COLUMN (last_column->data)));
4809        last_column = last_column->prev)
4810     ;
4811
4812   /* and the first */
4813   for (first_column = g_list_first (tree_view->priv->columns);
4814        first_column &&
4815        !(gtk_tree_view_column_get_visible (GTK_TREE_VIEW_COLUMN (first_column->data)));
4816        first_column = first_column->next)
4817     ;
4818
4819   /* Actually process the expose event.  To do this, we want to
4820    * start at the first node of the event, and walk the tree in
4821    * order, drawing each successive node.
4822    */
4823
4824   parity = !(_gtk_rbtree_node_get_index (tree, node) % 2);
4825
4826   do
4827     {
4828       gboolean is_separator = FALSE;
4829       gboolean is_first = FALSE;
4830       gboolean is_last = FALSE;
4831       gint n_col = 0;
4832
4833       parity = !parity;
4834       is_separator = row_is_separator (tree_view, &iter, NULL);
4835
4836       max_height = gtk_tree_view_get_row_height (tree_view, node);
4837
4838       cell_offset = 0;
4839       highlight_x = 0; /* should match x coord of first cell */
4840       expander_cell_width = 0;
4841
4842       background_area.y = y_offset + clip.y;
4843       background_area.height = max_height;
4844
4845       flags = 0;
4846
4847       if (GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_PRELIT))
4848         flags |= GTK_CELL_RENDERER_PRELIT;
4849
4850       if (GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_SELECTED))
4851         flags |= GTK_CELL_RENDERER_SELECTED;
4852
4853       /* we *need* to set cell data on all cells before the call
4854        * to _has_can_focus_cell, else _has_can_focus_cell() does not
4855        * return a correct value.
4856        */
4857       for (list = (rtl ? g_list_last (tree_view->priv->columns) : g_list_first (tree_view->priv->columns));
4858            list;
4859            list = (rtl ? list->prev : list->next))
4860         {
4861           GtkTreeViewColumn *column = list->data;
4862           gtk_tree_view_column_cell_set_cell_data (column,
4863                                                    tree_view->priv->model,
4864                                                    &iter,
4865                                                    GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_PARENT),
4866                                                    node->children?TRUE:FALSE);
4867         }
4868
4869       has_can_focus_cell = gtk_tree_view_has_can_focus_cell (tree_view);
4870
4871       for (list = (rtl ? g_list_last (tree_view->priv->columns) : g_list_first (tree_view->priv->columns));
4872            list;
4873            list = (rtl ? list->prev : list->next))
4874         {
4875           GtkTreeViewColumn *column = list->data;
4876           GtkRegionFlags row_flags = 0, column_flags = 0;
4877           GtkStateFlags state = 0;
4878           gint width;
4879           gboolean draw_focus;
4880
4881           if (!gtk_tree_view_column_get_visible (column))
4882             continue;
4883
4884           n_col++;
4885           width = gtk_tree_view_column_get_width (column);
4886
4887           if (cell_offset > clip.x + clip.width ||
4888               cell_offset + width < clip.x)
4889             {
4890               cell_offset += width;
4891               continue;
4892             }
4893
4894           if (gtk_tree_view_column_get_sort_indicator (column))
4895             flags |= GTK_CELL_RENDERER_SORTED;
4896           else
4897             flags &= ~GTK_CELL_RENDERER_SORTED;
4898
4899           if (cursor == node)
4900             flags |= GTK_CELL_RENDERER_FOCUSED;
4901           else
4902             flags &= ~GTK_CELL_RENDERER_FOCUSED;
4903
4904           background_area.x = cell_offset;
4905           background_area.width = width;
4906
4907           cell_area = background_area;
4908           cell_area.y += vertical_separator / 2;
4909           cell_area.x += horizontal_separator / 2;
4910           cell_area.height -= vertical_separator;
4911           cell_area.width -= horizontal_separator;
4912
4913           if (draw_vgrid_lines)
4914             {
4915               if (list == first_column)
4916                 {
4917                   cell_area.width -= grid_line_width / 2;
4918                 }
4919               else if (list == last_column)
4920                 {
4921                   cell_area.x += grid_line_width / 2;
4922                   cell_area.width -= grid_line_width / 2;
4923                 }
4924               else
4925                 {
4926                   cell_area.x += grid_line_width / 2;
4927                   cell_area.width -= grid_line_width;
4928                 }
4929             }
4930
4931           if (draw_hgrid_lines)
4932             {
4933               cell_area.y += grid_line_width / 2;
4934               cell_area.height -= grid_line_width;
4935             }
4936
4937           if (!gdk_rectangle_intersect (&clip, &background_area, NULL))
4938             {
4939               cell_offset += gtk_tree_view_column_get_width (column);
4940               continue;
4941             }
4942
4943           gtk_tree_view_column_cell_set_cell_data (column,
4944                                                    tree_view->priv->model,
4945                                                    &iter,
4946                                                    GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_PARENT),
4947                                                    node->children?TRUE:FALSE);
4948
4949           /* Select the detail for drawing the cell.  relevant
4950            * factors are parity, sortedness, and whether to
4951            * display rules.
4952            */
4953           if (allow_rules && tree_view->priv->has_rules)
4954             {
4955               if (parity)
4956                 row_flags |= GTK_REGION_ODD;
4957               else
4958                 row_flags |= GTK_REGION_EVEN;
4959             }
4960
4961           if ((flags & GTK_CELL_RENDERER_SORTED) &&
4962               n_visible_columns >= 3)
4963             column_flags |= GTK_REGION_SORTED;
4964
4965           is_first = (rtl ? !list->next : !list->prev);
4966           is_last = (rtl ? !list->prev : !list->next);
4967
4968           if (is_first)
4969             column_flags |= GTK_REGION_FIRST;
4970
4971           if (is_last)
4972             column_flags |= GTK_REGION_LAST;
4973
4974           if ((n_col % 2) == 0)
4975             column_flags |= GTK_REGION_EVEN;
4976           else
4977             column_flags |= GTK_REGION_ODD;
4978
4979           gtk_style_context_save (context);
4980
4981           state = gtk_cell_renderer_get_state (NULL, widget, flags);
4982           gtk_style_context_set_state (context, state);
4983
4984           gtk_style_context_add_class (context, GTK_STYLE_CLASS_CELL);
4985           gtk_style_context_add_region (context, GTK_STYLE_REGION_ROW, row_flags);
4986           gtk_style_context_add_region (context, GTK_STYLE_REGION_COLUMN, column_flags);
4987
4988           if (node == cursor && has_can_focus_cell
4989               && ((column == tree_view->priv->focus_column
4990                    && tree_view->priv->draw_keyfocus &&
4991                    gtk_widget_has_visible_focus (widget))
4992                   || (column == tree_view->priv->edited_column)))
4993             draw_focus = TRUE;
4994           else
4995             draw_focus = FALSE;
4996
4997           /* Draw background */
4998           gtk_render_background (context, cr,
4999                                  background_area.x,
5000                                  background_area.y,
5001                                  background_area.width,
5002                                  background_area.height);
5003
5004           /* Draw frame */
5005           gtk_render_frame (context, cr,
5006                             background_area.x,
5007                             background_area.y,
5008                             background_area.width,
5009                             background_area.height);
5010
5011           if (gtk_tree_view_is_expander_column (tree_view, column))
5012             {
5013               if (!rtl)
5014                 cell_area.x += (depth - 1) * tree_view->priv->level_indentation;
5015               cell_area.width -= (depth - 1) * tree_view->priv->level_indentation;
5016
5017               if (gtk_tree_view_draw_expanders (tree_view))
5018                 {
5019                   if (!rtl)
5020                     cell_area.x += depth * tree_view->priv->expander_size;
5021                   cell_area.width -= depth * tree_view->priv->expander_size;
5022                 }
5023
5024               /* If we have an expander column, the highlight underline
5025                * starts with that column, so that it indicates which
5026                * level of the tree we're dropping at.
5027                */
5028               highlight_x = cell_area.x;
5029               expander_cell_width = cell_area.width;
5030
5031               if (is_separator)
5032                 {
5033                   gtk_style_context_save (context);
5034                   gtk_style_context_add_class (context, GTK_STYLE_CLASS_SEPARATOR);
5035
5036                   gtk_render_line (context, cr,
5037                                    cell_area.x,
5038                                    cell_area.y + cell_area.height / 2,
5039                                    cell_area.x + cell_area.width,
5040                                    cell_area.y + cell_area.height / 2);
5041
5042                   gtk_style_context_restore (context);
5043                 }
5044               else
5045                 {
5046                   _gtk_tree_view_column_cell_render (column,
5047                                                      cr,
5048                                                      &background_area,
5049                                                      &cell_area,
5050                                                      flags,
5051                                                      draw_focus);
5052                 }
5053
5054               if (gtk_tree_view_draw_expanders (tree_view)
5055                   && (node->flags & GTK_RBNODE_IS_PARENT) == GTK_RBNODE_IS_PARENT)
5056                 {
5057                   gtk_tree_view_draw_arrow (GTK_TREE_VIEW (widget),
5058                                             cr,
5059                                             tree,
5060                                             node);
5061                 }
5062             }
5063           else
5064             {
5065               if (is_separator)
5066                 {
5067                   gtk_style_context_save (context);
5068                   gtk_style_context_add_class (context, GTK_STYLE_CLASS_SEPARATOR);
5069
5070                   gtk_render_line (context, cr,
5071                                    cell_area.x,
5072                                    cell_area.y + cell_area.height / 2,
5073                                    cell_area.x + cell_area.width,
5074                                    cell_area.y + cell_area.height / 2);
5075
5076                   gtk_style_context_restore (context);
5077                 }
5078               else
5079                 _gtk_tree_view_column_cell_render (column,
5080                                                    cr,
5081                                                    &background_area,
5082                                                    &cell_area,
5083                                                    flags,
5084                                                    draw_focus);
5085             }
5086
5087           if (draw_hgrid_lines)
5088             {
5089               if (background_area.y > 0)
5090                 gtk_tree_view_draw_line (tree_view, cr,
5091                                          GTK_TREE_VIEW_GRID_LINE,
5092                                          background_area.x, background_area.y,
5093                                          background_area.x + background_area.width,
5094                                          background_area.y);
5095
5096               if (y_offset + max_height >= clip.height)
5097                 gtk_tree_view_draw_line (tree_view, cr,
5098                                          GTK_TREE_VIEW_GRID_LINE,
5099                                          background_area.x, background_area.y + max_height,
5100                                          background_area.x + background_area.width,
5101                                          background_area.y + max_height);
5102             }
5103
5104           if (gtk_tree_view_is_expander_column (tree_view, column) &&
5105               tree_view->priv->tree_lines_enabled)
5106             {
5107               gint x = background_area.x;
5108               gint mult = rtl ? -1 : 1;
5109               gint y0 = background_area.y;
5110               gint y1 = background_area.y + background_area.height/2;
5111               gint y2 = background_area.y + background_area.height;
5112
5113               if (rtl)
5114                 x += background_area.width - 1;
5115
5116               if ((node->flags & GTK_RBNODE_IS_PARENT) == GTK_RBNODE_IS_PARENT
5117                   && depth > 1)
5118                 {
5119                   gtk_tree_view_draw_line (tree_view, cr,
5120                                            GTK_TREE_VIEW_TREE_LINE,
5121                                            x + tree_view->priv->expander_size * (depth - 1.5) * mult,
5122                                            y1,
5123                                            x + tree_view->priv->expander_size * (depth - 1.1) * mult,
5124                                            y1);
5125                 }
5126               else if (depth > 1)
5127                 {
5128                   gtk_tree_view_draw_line (tree_view, cr,
5129                                            GTK_TREE_VIEW_TREE_LINE,
5130                                            x + tree_view->priv->expander_size * (depth - 1.5) * mult,
5131                                            y1,
5132                                            x + tree_view->priv->expander_size * (depth - 0.5) * mult,
5133                                            y1);
5134                 }
5135
5136               if (depth > 1)
5137                 {
5138                   gint i;
5139                   GtkRBNode *tmp_node;
5140                   GtkRBTree *tmp_tree;
5141
5142                   if (!_gtk_rbtree_next (tree, node))
5143                     gtk_tree_view_draw_line (tree_view, cr,
5144                                              GTK_TREE_VIEW_TREE_LINE,
5145                                              x + tree_view->priv->expander_size * (depth - 1.5) * mult,
5146                                              y0,
5147                                              x + tree_view->priv->expander_size * (depth - 1.5) * mult,
5148                                              y1);
5149                   else
5150                     gtk_tree_view_draw_line (tree_view, cr,
5151                                              GTK_TREE_VIEW_TREE_LINE,
5152                                              x + tree_view->priv->expander_size * (depth - 1.5) * mult,
5153                                              y0,
5154                                              x + tree_view->priv->expander_size * (depth - 1.5) * mult,
5155                                              y2);
5156
5157                   tmp_node = tree->parent_node;
5158                   tmp_tree = tree->parent_tree;
5159
5160                   for (i = depth - 2; i > 0; i--)
5161                     {
5162                       if (_gtk_rbtree_next (tmp_tree, tmp_node))
5163                         gtk_tree_view_draw_line (tree_view, cr,
5164                                                  GTK_TREE_VIEW_TREE_LINE,
5165                                                  x + tree_view->priv->expander_size * (i - 0.5) * mult,
5166                                                  y0,
5167                                                  x + tree_view->priv->expander_size * (i - 0.5) * mult,
5168                                                  y2);
5169
5170                       tmp_node = tmp_tree->parent_node;
5171                       tmp_tree = tmp_tree->parent_tree;
5172                     }
5173                 }
5174             }
5175
5176           gtk_style_context_restore (context);
5177           cell_offset += gtk_tree_view_column_get_width (column);
5178         }
5179
5180       if (node == drag_highlight)
5181         {
5182           /* Draw indicator for the drop
5183            */
5184           gint highlight_y = -1;
5185           GtkRBTree *tree = NULL;
5186           GtkRBNode *node = NULL;
5187
5188           switch (tree_view->priv->drag_dest_pos)
5189             {
5190             case GTK_TREE_VIEW_DROP_BEFORE:
5191               highlight_y = background_area.y - 1;
5192               if (highlight_y < 0)
5193                       highlight_y = 0;
5194               break;
5195
5196             case GTK_TREE_VIEW_DROP_AFTER:
5197               highlight_y = background_area.y + background_area.height - 1;
5198               break;
5199
5200             case GTK_TREE_VIEW_DROP_INTO_OR_BEFORE:
5201             case GTK_TREE_VIEW_DROP_INTO_OR_AFTER:
5202               _gtk_tree_view_find_node (tree_view, drag_dest_path, &tree, &node);
5203
5204               if (tree == NULL)
5205                 break;
5206
5207               gtk_render_focus (context, cr,
5208                                 0, gtk_tree_view_get_row_y_offset (tree_view, tree, node)
5209                                    - focus_line_width / 2,
5210                                 gdk_window_get_width (tree_view->priv->bin_window),
5211                                 gtk_tree_view_get_row_height (tree_view, node)
5212                                    - focus_line_width + 1);
5213               break;
5214             }
5215
5216           if (highlight_y >= 0)
5217             {
5218               gtk_tree_view_draw_line (tree_view, cr,
5219                                        GTK_TREE_VIEW_FOREGROUND_LINE,
5220                                        rtl ? highlight_x + expander_cell_width : highlight_x,
5221                                        highlight_y,
5222                                        rtl ? 0 : bin_window_width,
5223                                        highlight_y);
5224             }
5225         }
5226
5227       /* draw the big row-spanning focus rectangle, if needed */
5228       if (!has_can_focus_cell && node == cursor &&
5229           tree_view->priv->draw_keyfocus &&
5230           gtk_widget_has_visible_focus (widget))
5231         {
5232           gint tmp_y, tmp_height;
5233           GtkStateFlags focus_rect_state = 0;
5234
5235           gtk_style_context_save (context);
5236
5237           focus_rect_state = gtk_cell_renderer_get_state (NULL, widget, flags);
5238           gtk_style_context_set_state (context, focus_rect_state);
5239
5240           if (draw_hgrid_lines)
5241             {
5242               tmp_y = gtk_tree_view_get_row_y_offset (tree_view, tree, node) + grid_line_width / 2;
5243               tmp_height = gtk_tree_view_get_row_height (tree_view, node) - grid_line_width;
5244             }
5245           else
5246             {
5247               tmp_y = gtk_tree_view_get_row_y_offset (tree_view, tree, node);
5248               tmp_height = gtk_tree_view_get_row_height (tree_view, node);
5249             }
5250
5251           gtk_render_focus (context, cr,
5252                             0, tmp_y,
5253                             gdk_window_get_width (tree_view->priv->bin_window),
5254                             tmp_height);
5255
5256           gtk_style_context_restore (context);
5257         }
5258
5259       y_offset += max_height;
5260       if (node->children)
5261         {
5262           GtkTreeIter parent = iter;
5263           gboolean has_child;
5264
5265           tree = node->children;
5266           node = tree->root;
5267
5268           g_assert (node != tree->nil);
5269
5270           while (node->left != tree->nil)
5271             node = node->left;
5272           has_child = gtk_tree_model_iter_children (tree_view->priv->model,
5273                                                     &iter,
5274                                                     &parent);
5275           depth++;
5276
5277           /* Sanity Check! */
5278           TREE_VIEW_INTERNAL_ASSERT (has_child, FALSE);
5279         }
5280       else
5281         {
5282           gboolean done = FALSE;
5283
5284           do
5285             {
5286               node = _gtk_rbtree_next (tree, node);
5287               if (node != NULL)
5288                 {
5289                   gboolean has_next = gtk_tree_model_iter_next (tree_view->priv->model, &iter);
5290                   done = TRUE;
5291
5292                   /* Sanity Check! */
5293                   TREE_VIEW_INTERNAL_ASSERT (has_next, FALSE);
5294                 }
5295               else
5296                 {
5297                   GtkTreeIter parent_iter = iter;
5298                   gboolean has_parent;
5299
5300                   node = tree->parent_node;
5301                   tree = tree->parent_tree;
5302                   if (tree == NULL)
5303                     /* we should go to done to free some memory */
5304                     goto done;
5305                   has_parent = gtk_tree_model_iter_parent (tree_view->priv->model,
5306                                                            &iter,
5307                                                            &parent_iter);
5308                   depth--;
5309
5310                   /* Sanity check */
5311                   TREE_VIEW_INTERNAL_ASSERT (has_parent, FALSE);
5312                 }
5313             }
5314           while (!done);
5315         }
5316     }
5317   while (y_offset < clip.height);
5318
5319 done:
5320   gtk_tree_view_draw_grid_lines (tree_view, cr, n_visible_columns);
5321
5322   if (tree_view->priv->rubber_band_status == RUBBER_BAND_ACTIVE)
5323     gtk_tree_view_paint_rubber_band (tree_view, cr);
5324
5325   if (cursor_path)
5326     gtk_tree_path_free (cursor_path);
5327
5328   if (drag_dest_path)
5329     gtk_tree_path_free (drag_dest_path);
5330
5331   return FALSE;
5332 }
5333
5334 static gboolean
5335 gtk_tree_view_draw (GtkWidget *widget,
5336                     cairo_t   *cr)
5337 {
5338   GtkTreeView *tree_view = GTK_TREE_VIEW (widget);
5339   GtkWidget   *button;
5340
5341   if (gtk_cairo_should_draw_window (cr, tree_view->priv->bin_window))
5342     {
5343       GtkStyleContext *context;
5344       GList *tmp_list;
5345
5346       context = gtk_widget_get_style_context (widget);
5347
5348       cairo_save (cr);
5349
5350       gtk_style_context_save (context);
5351       gtk_style_context_add_class (context, GTK_STYLE_CLASS_VIEW);
5352
5353       gtk_cairo_transform_to_window (cr, widget, tree_view->priv->bin_window);
5354
5355       gtk_tree_view_bin_draw (widget, cr);
5356
5357       gtk_style_context_restore (context);
5358       cairo_restore (cr);
5359
5360       /* We can't just chain up to Container::draw as it will try to send the
5361        * event to the headers, so we handle propagating it to our children
5362        * (eg. widgets being edited) ourselves.
5363        */
5364       tmp_list = tree_view->priv->children;
5365       while (tmp_list)
5366         {
5367           GtkTreeViewChild *child = tmp_list->data;
5368           tmp_list = tmp_list->next;
5369
5370           gtk_container_propagate_draw (GTK_CONTAINER (tree_view), child->widget, cr);
5371         }
5372     }
5373
5374   if (gtk_cairo_should_draw_window (cr, tree_view->priv->header_window))
5375     {
5376       GList *list;
5377
5378       for (list = tree_view->priv->columns; list != NULL; list = list->next)
5379         {
5380           GtkTreeViewColumn *column = list->data;
5381
5382           if (column == tree_view->priv->drag_column)
5383             continue;
5384
5385           if (gtk_tree_view_column_get_visible (column))
5386             {
5387               button = gtk_tree_view_column_get_button (column);
5388               gtk_container_propagate_draw (GTK_CONTAINER (tree_view),
5389                                             button, cr);
5390             }
5391         }
5392     }
5393
5394   if (tree_view->priv->drag_window &&
5395       gtk_cairo_should_draw_window (cr, tree_view->priv->drag_window))
5396     {
5397       button = gtk_tree_view_column_get_button (tree_view->priv->drag_column);
5398       gtk_container_propagate_draw (GTK_CONTAINER (tree_view),
5399                                     button, cr);
5400     }
5401
5402   return FALSE;
5403 }
5404
5405 enum
5406 {
5407   DROP_HOME,
5408   DROP_RIGHT,
5409   DROP_LEFT,
5410   DROP_END
5411 };
5412
5413 /* returns 0x1 when no column has been found -- yes it's hackish */
5414 static GtkTreeViewColumn *
5415 gtk_tree_view_get_drop_column (GtkTreeView       *tree_view,
5416                                GtkTreeViewColumn *column,
5417                                gint               drop_position)
5418 {
5419   GtkTreeViewColumn *left_column = NULL;
5420   GtkTreeViewColumn *cur_column = NULL;
5421   GList *tmp_list;
5422
5423   if (!gtk_tree_view_column_get_reorderable (column))
5424     return (GtkTreeViewColumn *)0x1;
5425
5426   switch (drop_position)
5427     {
5428       case DROP_HOME:
5429         /* find first column where we can drop */
5430         tmp_list = tree_view->priv->columns;
5431         if (column == GTK_TREE_VIEW_COLUMN (tmp_list->data))
5432           return (GtkTreeViewColumn *)0x1;
5433
5434         while (tmp_list)
5435           {
5436             g_assert (tmp_list);
5437
5438             cur_column = GTK_TREE_VIEW_COLUMN (tmp_list->data);
5439             tmp_list = tmp_list->next;
5440
5441             if (left_column &&
5442                 gtk_tree_view_column_get_visible (left_column) == FALSE)
5443               continue;
5444
5445             if (!tree_view->priv->column_drop_func)
5446               return left_column;
5447
5448             if (!tree_view->priv->column_drop_func (tree_view, column, left_column, cur_column, tree_view->priv->column_drop_func_data))
5449               {
5450                 left_column = cur_column;
5451                 continue;
5452               }
5453
5454             return left_column;
5455           }
5456
5457         if (!tree_view->priv->column_drop_func)
5458           return left_column;
5459
5460         if (tree_view->priv->column_drop_func (tree_view, column, left_column, NULL, tree_view->priv->column_drop_func_data))
5461           return left_column;
5462         else
5463           return (GtkTreeViewColumn *)0x1;
5464         break;
5465
5466       case DROP_RIGHT:
5467         /* find first column after column where we can drop */
5468         tmp_list = tree_view->priv->columns;
5469
5470         for (; tmp_list; tmp_list = tmp_list->next)
5471           if (GTK_TREE_VIEW_COLUMN (tmp_list->data) == column)
5472             break;
5473
5474         if (!tmp_list || !tmp_list->next)
5475           return (GtkTreeViewColumn *)0x1;
5476
5477         tmp_list = tmp_list->next;
5478         left_column = GTK_TREE_VIEW_COLUMN (tmp_list->data);
5479         tmp_list = tmp_list->next;
5480
5481         while (tmp_list)
5482           {
5483             g_assert (tmp_list);
5484
5485             cur_column = GTK_TREE_VIEW_COLUMN (tmp_list->data);
5486             tmp_list = tmp_list->next;
5487
5488             if (left_column &&
5489                 gtk_tree_view_column_get_visible (left_column) == FALSE)
5490               {
5491                 left_column = cur_column;
5492                 if (tmp_list)
5493                   tmp_list = tmp_list->next;
5494                 continue;
5495               }
5496
5497             if (!tree_view->priv->column_drop_func)
5498               return left_column;
5499
5500             if (!tree_view->priv->column_drop_func (tree_view, column, left_column, cur_column, tree_view->priv->column_drop_func_data))
5501               {
5502                 left_column = cur_column;
5503                 continue;
5504               }
5505
5506             return left_column;
5507           }
5508
5509         if (!tree_view->priv->column_drop_func)
5510           return left_column;
5511
5512         if (tree_view->priv->column_drop_func (tree_view, column, left_column, NULL, tree_view->priv->column_drop_func_data))
5513           return left_column;
5514         else
5515           return (GtkTreeViewColumn *)0x1;
5516         break;
5517
5518       case DROP_LEFT:
5519         /* find first column before column where we can drop */
5520         tmp_list = tree_view->priv->columns;
5521
5522         for (; tmp_list; tmp_list = tmp_list->next)
5523           if (GTK_TREE_VIEW_COLUMN (tmp_list->data) == column)
5524             break;
5525
5526         if (!tmp_list || !tmp_list->prev)
5527           return (GtkTreeViewColumn *)0x1;
5528
5529         tmp_list = tmp_list->prev;
5530         cur_column = GTK_TREE_VIEW_COLUMN (tmp_list->data);
5531         tmp_list = tmp_list->prev;
5532
5533         while (tmp_list)
5534           {
5535             g_assert (tmp_list);
5536
5537             left_column = GTK_TREE_VIEW_COLUMN (tmp_list->data);
5538
5539             if (left_column &&
5540                 gtk_tree_view_column_get_visible (left_column) == FALSE)
5541               {
5542                 /*if (!tmp_list->prev)
5543                   return (GtkTreeViewColumn *)0x1;
5544                   */
5545 /*
5546                 cur_column = GTK_TREE_VIEW_COLUMN (tmp_list->prev->data);
5547                 tmp_list = tmp_list->prev->prev;
5548                 continue;*/
5549
5550                 cur_column = left_column;
5551                 if (tmp_list)
5552                   tmp_list = tmp_list->prev;
5553                 continue;
5554               }
5555
5556             if (!tree_view->priv->column_drop_func)
5557               return left_column;
5558
5559             if (tree_view->priv->column_drop_func (tree_view, column, left_column, cur_column, tree_view->priv->column_drop_func_data))
5560               return left_column;
5561
5562             cur_column = left_column;
5563             tmp_list = tmp_list->prev;
5564           }
5565
5566         if (!tree_view->priv->column_drop_func)
5567           return NULL;
5568
5569         if (tree_view->priv->column_drop_func (tree_view, column, NULL, cur_column, tree_view->priv->column_drop_func_data))
5570           return NULL;
5571         else
5572           return (GtkTreeViewColumn *)0x1;
5573         break;
5574
5575       case DROP_END:
5576         /* same as DROP_HOME case, but doing it backwards */
5577         tmp_list = g_list_last (tree_view->priv->columns);
5578         cur_column = NULL;
5579
5580         if (column == GTK_TREE_VIEW_COLUMN (tmp_list->data))
5581           return (GtkTreeViewColumn *)0x1;
5582
5583         while (tmp_list)
5584           {
5585             g_assert (tmp_list);
5586
5587             left_column = GTK_TREE_VIEW_COLUMN (tmp_list->data);
5588
5589             if (left_column &&
5590                 gtk_tree_view_column_get_visible (left_column) == FALSE)
5591               {
5592                 cur_column = left_column;
5593                 tmp_list = tmp_list->prev;
5594               }
5595
5596             if (!tree_view->priv->column_drop_func)
5597               return left_column;
5598
5599             if (tree_view->priv->column_drop_func (tree_view, column, left_column, cur_column, tree_view->priv->column_drop_func_data))
5600               return left_column;
5601
5602             cur_column = left_column;
5603             tmp_list = tmp_list->prev;
5604           }
5605
5606         if (!tree_view->priv->column_drop_func)
5607           return NULL;
5608
5609         if (tree_view->priv->column_drop_func (tree_view, column, NULL, cur_column, tree_view->priv->column_drop_func_data))
5610           return NULL;
5611         else
5612           return (GtkTreeViewColumn *)0x1;
5613         break;
5614     }
5615
5616   return (GtkTreeViewColumn *)0x1;
5617 }
5618
5619 static gboolean
5620 gtk_tree_view_key_press (GtkWidget   *widget,
5621                          GdkEventKey *event)
5622 {
5623   GtkTreeView *tree_view = (GtkTreeView *) widget;
5624   GtkWidget   *button;
5625
5626   if (tree_view->priv->rubber_band_status)
5627     {
5628       if (event->keyval == GDK_KEY_Escape)
5629         gtk_tree_view_stop_rubber_band (tree_view);
5630
5631       return TRUE;
5632     }
5633
5634   if (tree_view->priv->in_column_drag)
5635     {
5636       if (event->keyval == GDK_KEY_Escape)
5637         {
5638           tree_view->priv->cur_reorder = NULL;
5639           gtk_tree_view_button_release_drag_column (widget, NULL);
5640         }
5641       return TRUE;
5642     }
5643
5644   if (tree_view->priv->headers_visible)
5645     {
5646       GList *focus_column;
5647       gboolean rtl;
5648
5649       rtl = (gtk_widget_get_direction (GTK_WIDGET (tree_view)) == GTK_TEXT_DIR_RTL);
5650
5651       for (focus_column = tree_view->priv->columns;
5652            focus_column;
5653            focus_column = focus_column->next)
5654         {
5655           GtkTreeViewColumn *column = GTK_TREE_VIEW_COLUMN (focus_column->data);
5656
5657           button = gtk_tree_view_column_get_button (column);
5658           if (gtk_widget_has_focus (button))
5659             break;
5660         }
5661
5662       if (focus_column &&
5663           (event->state & GDK_SHIFT_MASK) && (event->state & GDK_MOD1_MASK) &&
5664           (event->keyval == GDK_KEY_Left || event->keyval == GDK_KEY_KP_Left
5665            || event->keyval == GDK_KEY_Right || event->keyval == GDK_KEY_KP_Right))
5666         {
5667           GtkTreeViewColumn *column = GTK_TREE_VIEW_COLUMN (focus_column->data);
5668           gint max_width, min_width;
5669
5670           if (!gtk_tree_view_column_get_resizable (column))
5671             {
5672               gtk_widget_error_bell (widget);
5673               return TRUE;
5674             }
5675
5676           if (event->keyval == (rtl ? GDK_KEY_Right : GDK_KEY_Left)
5677               || event->keyval == (rtl ? GDK_KEY_KP_Right : GDK_KEY_KP_Left))
5678             {
5679               GtkRequisition button_req;
5680               gint old_width = _gtk_tree_view_column_get_resized_width (column);
5681               gint new_width;
5682
5683               button = gtk_tree_view_column_get_button (column);
5684
5685               gtk_widget_get_preferred_size (button, &button_req, NULL);
5686
5687               new_width = MAX (old_width, gtk_tree_view_column_get_width (column));
5688               new_width -= 2;
5689               if (new_width < 0)
5690                 new_width = 0;
5691
5692               _gtk_tree_view_column_set_resized_width (column, new_width);
5693
5694               min_width = gtk_tree_view_column_get_min_width (column);
5695               if (min_width == -1)
5696                 new_width = MAX (button_req.width, new_width);
5697               else
5698                 {
5699                   new_width = MAX (min_width, new_width);
5700                 }
5701
5702               max_width = gtk_tree_view_column_get_max_width (column);
5703               if (max_width != -1)
5704                 new_width = MIN (new_width, max_width);
5705
5706               _gtk_tree_view_column_set_use_resized_width (column, TRUE);
5707
5708               if (new_width != old_width)
5709                 {
5710                   _gtk_tree_view_column_set_resized_width (column, new_width);
5711                   gtk_widget_queue_resize (widget);
5712                 }
5713               else
5714                 gtk_widget_error_bell (widget);
5715             }
5716           else if (event->keyval == (rtl ? GDK_KEY_Left : GDK_KEY_Right)
5717                    || event->keyval == (rtl ? GDK_KEY_KP_Left : GDK_KEY_KP_Right))
5718             {
5719               gint old_width = _gtk_tree_view_column_get_resized_width (column);
5720               gint new_width;
5721
5722               new_width = MAX (old_width, gtk_tree_view_column_get_width (column));
5723               new_width += 2;
5724
5725               max_width = gtk_tree_view_column_get_max_width (column);
5726               if (max_width != -1)
5727                 new_width = MIN (new_width, max_width);
5728
5729               _gtk_tree_view_column_set_use_resized_width (column, TRUE);
5730
5731               if (new_width != old_width)
5732                 {
5733                   _gtk_tree_view_column_set_resized_width (column, new_width);
5734                   gtk_widget_queue_resize (widget);
5735                 }
5736               else
5737                 gtk_widget_error_bell (widget);
5738             }
5739
5740           return TRUE;
5741         }
5742
5743       if (focus_column &&
5744           (event->state & GDK_MOD1_MASK) &&
5745           (event->keyval == GDK_KEY_Left || event->keyval == GDK_KEY_KP_Left
5746            || event->keyval == GDK_KEY_Right || event->keyval == GDK_KEY_KP_Right
5747            || event->keyval == GDK_KEY_Home || event->keyval == GDK_KEY_KP_Home
5748            || event->keyval == GDK_KEY_End || event->keyval == GDK_KEY_KP_End))
5749         {
5750           GtkTreeViewColumn *column = GTK_TREE_VIEW_COLUMN (focus_column->data);
5751
5752           if (event->keyval == (rtl ? GDK_KEY_Right : GDK_KEY_Left)
5753               || event->keyval == (rtl ? GDK_KEY_KP_Right : GDK_KEY_KP_Left))
5754             {
5755               GtkTreeViewColumn *col;
5756               col = gtk_tree_view_get_drop_column (tree_view, column, DROP_LEFT);
5757               if (col != (GtkTreeViewColumn *)0x1)
5758                 gtk_tree_view_move_column_after (tree_view, column, col);
5759               else
5760                 gtk_widget_error_bell (widget);
5761             }
5762           else if (event->keyval == (rtl ? GDK_KEY_Left : GDK_KEY_Right)
5763                    || event->keyval == (rtl ? GDK_KEY_KP_Left : GDK_KEY_KP_Right))
5764             {
5765               GtkTreeViewColumn *col;
5766               col = gtk_tree_view_get_drop_column (tree_view, column, DROP_RIGHT);
5767               if (col != (GtkTreeViewColumn *)0x1)
5768                 gtk_tree_view_move_column_after (tree_view, column, col);
5769               else
5770                 gtk_widget_error_bell (widget);
5771             }
5772           else if (event->keyval == GDK_KEY_Home || event->keyval == GDK_KEY_KP_Home)
5773             {
5774               GtkTreeViewColumn *col;
5775               col = gtk_tree_view_get_drop_column (tree_view, column, DROP_HOME);
5776               if (col != (GtkTreeViewColumn *)0x1)
5777                 gtk_tree_view_move_column_after (tree_view, column, col);
5778               else
5779                 gtk_widget_error_bell (widget);
5780             }
5781           else if (event->keyval == GDK_KEY_End || event->keyval == GDK_KEY_KP_End)
5782             {
5783               GtkTreeViewColumn *col;
5784               col = gtk_tree_view_get_drop_column (tree_view, column, DROP_END);
5785               if (col != (GtkTreeViewColumn *)0x1)
5786                 gtk_tree_view_move_column_after (tree_view, column, col);
5787               else
5788                 gtk_widget_error_bell (widget);
5789             }
5790
5791           return TRUE;
5792         }
5793     }
5794
5795   /* Chain up to the parent class.  It handles the keybindings. */
5796   if (GTK_WIDGET_CLASS (gtk_tree_view_parent_class)->key_press_event (widget, event))
5797     return TRUE;
5798
5799   if (tree_view->priv->search_entry_avoid_unhandled_binding)
5800     {
5801       tree_view->priv->search_entry_avoid_unhandled_binding = FALSE;
5802       return FALSE;
5803     }
5804
5805   /* We pass the event to the search_entry.  If its text changes, then we start
5806    * the typeahead find capabilities. */
5807   if (gtk_widget_has_focus (GTK_WIDGET (tree_view))
5808       && tree_view->priv->enable_search
5809       && !tree_view->priv->search_custom_entry_set)
5810     {
5811       GdkEvent *new_event;
5812       char *old_text;
5813       const char *new_text;
5814       gboolean retval;
5815       GdkScreen *screen;
5816       gboolean text_modified;
5817       gulong popup_menu_id;
5818
5819       gtk_tree_view_ensure_interactive_directory (tree_view);
5820
5821       /* Make a copy of the current text */
5822       old_text = g_strdup (gtk_entry_get_text (GTK_ENTRY (tree_view->priv->search_entry)));
5823       new_event = gdk_event_copy ((GdkEvent *) event);
5824       g_object_unref (((GdkEventKey *) new_event)->window);
5825       ((GdkEventKey *) new_event)->window = g_object_ref (gtk_widget_get_window (tree_view->priv->search_window));
5826       gtk_widget_realize (tree_view->priv->search_window);
5827
5828       popup_menu_id = g_signal_connect (tree_view->priv->search_entry,
5829                                         "popup-menu", G_CALLBACK (gtk_true),
5830                                         NULL);
5831
5832       /* Move the entry off screen */
5833       screen = gtk_widget_get_screen (GTK_WIDGET (tree_view));
5834       gtk_window_move (GTK_WINDOW (tree_view->priv->search_window),
5835                        gdk_screen_get_width (screen) + 1,
5836                        gdk_screen_get_height (screen) + 1);
5837       gtk_widget_show (tree_view->priv->search_window);
5838
5839       /* Send the event to the window.  If the preedit_changed signal is emitted
5840        * during this event, we will set priv->imcontext_changed  */
5841       tree_view->priv->imcontext_changed = FALSE;
5842       retval = gtk_widget_event (tree_view->priv->search_window, new_event);
5843       gdk_event_free (new_event);
5844       gtk_widget_hide (tree_view->priv->search_window);
5845
5846       g_signal_handler_disconnect (tree_view->priv->search_entry,
5847                                    popup_menu_id);
5848
5849       /* We check to make sure that the entry tried to handle the text, and that
5850        * the text has changed.
5851        */
5852       new_text = gtk_entry_get_text (GTK_ENTRY (tree_view->priv->search_entry));
5853       text_modified = strcmp (old_text, new_text) != 0;
5854       g_free (old_text);
5855       if (tree_view->priv->imcontext_changed ||    /* we're in a preedit */
5856           (retval && text_modified))               /* ...or the text was modified */
5857         {
5858           if (gtk_tree_view_real_start_interactive_search (tree_view,
5859                                                            gdk_event_get_device ((GdkEvent *) event),
5860                                                            FALSE))
5861             {
5862               gtk_widget_grab_focus (GTK_WIDGET (tree_view));
5863               return TRUE;
5864             }
5865           else
5866             {
5867               gtk_entry_set_text (GTK_ENTRY (tree_view->priv->search_entry), "");
5868               return FALSE;
5869             }
5870         }
5871     }
5872
5873   return FALSE;
5874 }
5875
5876 static gboolean
5877 gtk_tree_view_key_release (GtkWidget   *widget,
5878                            GdkEventKey *event)
5879 {
5880   GtkTreeView *tree_view = GTK_TREE_VIEW (widget);
5881
5882   if (tree_view->priv->rubber_band_status)
5883     return TRUE;
5884
5885   return GTK_WIDGET_CLASS (gtk_tree_view_parent_class)->key_release_event (widget, event);
5886 }
5887
5888 /* FIXME Is this function necessary? Can I get an enter_notify event
5889  * w/o either an expose event or a mouse motion event?
5890  */
5891 static gboolean
5892 gtk_tree_view_enter_notify (GtkWidget        *widget,
5893                             GdkEventCrossing *event)
5894 {
5895   GtkTreeView *tree_view = GTK_TREE_VIEW (widget);
5896   GtkRBTree *tree;
5897   GtkRBNode *node;
5898   gint new_y;
5899
5900   /* Sanity check it */
5901   if (event->window != tree_view->priv->bin_window)
5902     return FALSE;
5903
5904   if (tree_view->priv->tree == NULL)
5905     return FALSE;
5906
5907   if (event->mode == GDK_CROSSING_GRAB ||
5908       event->mode == GDK_CROSSING_GTK_GRAB ||
5909       event->mode == GDK_CROSSING_GTK_UNGRAB ||
5910       event->mode == GDK_CROSSING_STATE_CHANGED)
5911     return TRUE;
5912
5913   /* find the node internally */
5914   new_y = TREE_WINDOW_Y_TO_RBTREE_Y(tree_view, event->y);
5915   if (new_y < 0)
5916     new_y = 0;
5917   _gtk_rbtree_find_offset (tree_view->priv->tree, new_y, &tree, &node);
5918
5919   tree_view->priv->event_last_x = event->x;
5920   tree_view->priv->event_last_y = event->y;
5921
5922   if ((tree_view->priv->button_pressed_node == NULL) ||
5923       (tree_view->priv->button_pressed_node == node))
5924     prelight_or_select (tree_view, tree, node, event->x, event->y);
5925
5926   return TRUE;
5927 }
5928
5929 static gboolean
5930 gtk_tree_view_leave_notify (GtkWidget        *widget,
5931                             GdkEventCrossing *event)
5932 {
5933   GtkTreeView *tree_view;
5934
5935   if (event->mode == GDK_CROSSING_GRAB)
5936     return TRUE;
5937
5938   tree_view = GTK_TREE_VIEW (widget);
5939
5940   if (tree_view->priv->prelight_node)
5941     _gtk_tree_view_queue_draw_node (tree_view,
5942                                    tree_view->priv->prelight_tree,
5943                                    tree_view->priv->prelight_node,
5944                                    NULL);
5945
5946   tree_view->priv->event_last_x = -10000;
5947   tree_view->priv->event_last_y = -10000;
5948
5949   prelight_or_select (tree_view,
5950                       NULL, NULL,
5951                       -1000, -1000); /* coords not possibly over an arrow */
5952
5953   return TRUE;
5954 }
5955
5956
5957 static gint
5958 gtk_tree_view_focus_out (GtkWidget     *widget,
5959                          GdkEventFocus *event)
5960 {
5961   GtkTreeView *tree_view;
5962
5963   tree_view = GTK_TREE_VIEW (widget);
5964
5965   gtk_widget_queue_draw (widget);
5966
5967   /* destroy interactive search dialog */
5968   if (tree_view->priv->search_window)
5969     gtk_tree_view_search_dialog_hide (tree_view->priv->search_window, tree_view,
5970                                       gdk_event_get_device ((GdkEvent *) event));
5971
5972   return FALSE;
5973 }
5974
5975
5976 /* Incremental Reflow
5977  */
5978
5979 static void
5980 gtk_tree_view_node_queue_redraw (GtkTreeView *tree_view,
5981                                  GtkRBTree   *tree,
5982                                  GtkRBNode   *node)
5983 {
5984   GtkAllocation allocation;
5985   gint y;
5986
5987   y = _gtk_rbtree_node_find_offset (tree, node)
5988     - gtk_adjustment_get_value (tree_view->priv->vadjustment)
5989     + gtk_tree_view_get_effective_header_height (tree_view);
5990
5991   gtk_widget_get_allocation (GTK_WIDGET (tree_view), &allocation);
5992   gtk_widget_queue_draw_area (GTK_WIDGET (tree_view),
5993                               0, y,
5994                               allocation.width,
5995                               GTK_RBNODE_GET_HEIGHT (node));
5996 }
5997
5998 static gboolean
5999 node_is_visible (GtkTreeView *tree_view,
6000                  GtkRBTree   *tree,
6001                  GtkRBNode   *node)
6002 {
6003   int y;
6004   int height;
6005
6006   y = _gtk_rbtree_node_find_offset (tree, node);
6007   height = gtk_tree_view_get_row_height (tree_view, node);
6008
6009   if (y >= gtk_adjustment_get_value (tree_view->priv->vadjustment) &&
6010       y + height <= (gtk_adjustment_get_value (tree_view->priv->vadjustment)
6011                      + gtk_adjustment_get_page_size (tree_view->priv->vadjustment)))
6012     return TRUE;
6013
6014   return FALSE;
6015 }
6016
6017 /* Returns TRUE if it updated the size
6018  */
6019 static gboolean
6020 validate_row (GtkTreeView *tree_view,
6021               GtkRBTree   *tree,
6022               GtkRBNode   *node,
6023               GtkTreeIter *iter,
6024               GtkTreePath *path)
6025 {
6026   GtkTreeViewColumn *column;
6027   GList *list, *first_column, *last_column;
6028   gint height = 0;
6029   gint horizontal_separator;
6030   gint vertical_separator;
6031   gint depth = gtk_tree_path_get_depth (path);
6032   gboolean retval = FALSE;
6033   gboolean is_separator = FALSE;
6034   gboolean draw_vgrid_lines, draw_hgrid_lines;
6035   gint focus_pad;
6036   gint grid_line_width;
6037   gboolean wide_separators;
6038   gint separator_height;
6039
6040   /* double check the row needs validating */
6041   if (! GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_INVALID) &&
6042       ! GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_COLUMN_INVALID))
6043     return FALSE;
6044
6045   is_separator = row_is_separator (tree_view, iter, NULL);
6046
6047   gtk_widget_style_get (GTK_WIDGET (tree_view),
6048                         "focus-padding", &focus_pad,
6049                         "horizontal-separator", &horizontal_separator,
6050                         "vertical-separator", &vertical_separator,
6051                         "grid-line-width", &grid_line_width,
6052                         "wide-separators",  &wide_separators,
6053                         "separator-height", &separator_height,
6054                         NULL);
6055
6056   draw_vgrid_lines =
6057     tree_view->priv->grid_lines == GTK_TREE_VIEW_GRID_LINES_VERTICAL
6058     || tree_view->priv->grid_lines == GTK_TREE_VIEW_GRID_LINES_BOTH;
6059   draw_hgrid_lines =
6060     tree_view->priv->grid_lines == GTK_TREE_VIEW_GRID_LINES_HORIZONTAL
6061     || tree_view->priv->grid_lines == GTK_TREE_VIEW_GRID_LINES_BOTH;
6062
6063   for (last_column = g_list_last (tree_view->priv->columns);
6064        last_column &&
6065        !(gtk_tree_view_column_get_visible (GTK_TREE_VIEW_COLUMN (last_column->data)));
6066        last_column = last_column->prev)
6067     ;
6068
6069   for (first_column = g_list_first (tree_view->priv->columns);
6070        first_column &&
6071        !(gtk_tree_view_column_get_visible (GTK_TREE_VIEW_COLUMN (first_column->data)));
6072        first_column = first_column->next)
6073     ;
6074
6075   for (list = tree_view->priv->columns; list; list = list->next)
6076     {
6077       gint padding = 0;
6078       gint original_width;
6079       gint new_width;
6080       gint row_height;
6081
6082       column = list->data;
6083
6084       if (!gtk_tree_view_column_get_visible (column))
6085         continue;
6086
6087       if (GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_COLUMN_INVALID) &&
6088           !_gtk_tree_view_column_cell_get_dirty (column))
6089         continue;
6090
6091       original_width = _gtk_tree_view_column_get_requested_width (column);
6092
6093       gtk_tree_view_column_cell_set_cell_data (column, tree_view->priv->model, iter,
6094                                                GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_PARENT),
6095                                                node->children?TRUE:FALSE);
6096       gtk_tree_view_column_cell_get_size (column,
6097                                           NULL, NULL, NULL,
6098                                           NULL, &row_height);
6099
6100       if (!is_separator)
6101         {
6102           row_height += vertical_separator;
6103           height = MAX (height, row_height);
6104           height = MAX (height, tree_view->priv->expander_size);
6105         }
6106       else
6107         {
6108           if (wide_separators)
6109             height = separator_height + 2 * focus_pad;
6110           else
6111             height = 2 + 2 * focus_pad;
6112         }
6113
6114       if (gtk_tree_view_is_expander_column (tree_view, column))
6115         {
6116           padding += horizontal_separator + (depth - 1) * tree_view->priv->level_indentation;
6117
6118           if (gtk_tree_view_draw_expanders (tree_view))
6119             padding += depth * tree_view->priv->expander_size;
6120         }
6121       else
6122         padding += horizontal_separator;
6123
6124       if (draw_vgrid_lines)
6125         {
6126           if (list->data == first_column || list->data == last_column)
6127             padding += grid_line_width / 2.0;
6128           else
6129             padding += grid_line_width;
6130         }
6131
6132       /* Update the padding for the column */
6133       _gtk_tree_view_column_push_padding (column, padding);
6134       new_width = _gtk_tree_view_column_get_requested_width (column);
6135
6136       if (new_width > original_width)
6137         retval = TRUE;
6138     }
6139
6140   if (draw_hgrid_lines)
6141     height += grid_line_width;
6142
6143   if (height != GTK_RBNODE_GET_HEIGHT (node))
6144     {
6145       retval = TRUE;
6146       _gtk_rbtree_node_set_height (tree, node, height);
6147     }
6148   _gtk_rbtree_node_mark_valid (tree, node);
6149   tree_view->priv->post_validation_flag = TRUE;
6150
6151   return retval;
6152 }
6153
6154
6155 static void
6156 validate_visible_area (GtkTreeView *tree_view)
6157 {
6158   GtkAllocation allocation;
6159   GtkTreePath *path = NULL;
6160   GtkTreePath *above_path = NULL;
6161   GtkTreeIter iter;
6162   GtkRBTree *tree = NULL;
6163   GtkRBNode *node = NULL;
6164   gboolean need_redraw = FALSE;
6165   gboolean size_changed = FALSE;
6166   gint total_height;
6167   gint area_above = 0;
6168   gint area_below = 0;
6169
6170   if (tree_view->priv->tree == NULL)
6171     return;
6172
6173   if (! GTK_RBNODE_FLAG_SET (tree_view->priv->tree->root, GTK_RBNODE_DESCENDANTS_INVALID) &&
6174       tree_view->priv->scroll_to_path == NULL)
6175     return;
6176
6177   gtk_widget_get_allocation (GTK_WIDGET (tree_view), &allocation);
6178   total_height = allocation.height - gtk_tree_view_get_effective_header_height (tree_view);
6179
6180   if (total_height == 0)
6181     return;
6182
6183   /* First, we check to see if we need to scroll anywhere
6184    */
6185   if (tree_view->priv->scroll_to_path)
6186     {
6187       path = gtk_tree_row_reference_get_path (tree_view->priv->scroll_to_path);
6188       if (path && !_gtk_tree_view_find_node (tree_view, path, &tree, &node))
6189         {
6190           /* we are going to scroll, and will update dy */
6191           gtk_tree_model_get_iter (tree_view->priv->model, &iter, path);
6192           if (GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_INVALID) ||
6193               GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_COLUMN_INVALID))
6194             {
6195               _gtk_tree_view_queue_draw_node (tree_view, tree, node, NULL);
6196               if (validate_row (tree_view, tree, node, &iter, path))
6197                 size_changed = TRUE;
6198             }
6199
6200           if (tree_view->priv->scroll_to_use_align)
6201             {
6202               gint height = gtk_tree_view_get_row_height (tree_view, node);
6203               area_above = (total_height - height) *
6204                 tree_view->priv->scroll_to_row_align;
6205               area_below = total_height - area_above - height;
6206               area_above = MAX (area_above, 0);
6207               area_below = MAX (area_below, 0);
6208             }
6209           else
6210             {
6211               /* two cases:
6212                * 1) row not visible
6213                * 2) row visible
6214                */
6215               gint dy;
6216               gint height = gtk_tree_view_get_row_height (tree_view, node);
6217
6218               dy = _gtk_rbtree_node_find_offset (tree, node);
6219
6220               if (dy >= gtk_adjustment_get_value (tree_view->priv->vadjustment) &&
6221                   dy + height <= (gtk_adjustment_get_value (tree_view->priv->vadjustment)
6222                                   + gtk_adjustment_get_page_size (tree_view->priv->vadjustment)))
6223                 {
6224                   /* row visible: keep the row at the same position */
6225                   area_above = dy - gtk_adjustment_get_value (tree_view->priv->vadjustment);
6226                   area_below = (gtk_adjustment_get_value (tree_view->priv->vadjustment) +
6227                                 gtk_adjustment_get_page_size (tree_view->priv->vadjustment))
6228                                - dy - height;
6229                 }
6230               else
6231                 {
6232                   /* row not visible */
6233                   if (dy >= 0
6234                       && dy + height <= gtk_adjustment_get_page_size (tree_view->priv->vadjustment))
6235                     {
6236                       /* row at the beginning -- fixed */
6237                       area_above = dy;
6238                       area_below = gtk_adjustment_get_page_size (tree_view->priv->vadjustment)
6239                                    - area_above - height;
6240                     }
6241                   else if (dy >= (gtk_adjustment_get_upper (tree_view->priv->vadjustment) -
6242                                   gtk_adjustment_get_page_size (tree_view->priv->vadjustment)))
6243                     {
6244                       /* row at the end -- fixed */
6245                       area_above = dy - (gtk_adjustment_get_upper (tree_view->priv->vadjustment) -
6246                                    gtk_adjustment_get_page_size (tree_view->priv->vadjustment));
6247                       area_below = gtk_adjustment_get_page_size (tree_view->priv->vadjustment) -
6248                                    area_above - height;
6249
6250                       if (area_below < 0)
6251                         {
6252                           area_above = gtk_adjustment_get_page_size (tree_view->priv->vadjustment) - height;
6253                           area_below = 0;
6254                         }
6255                     }
6256                   else
6257                     {
6258                       /* row somewhere in the middle, bring it to the top
6259                        * of the view
6260                        */
6261                       area_above = 0;
6262                       area_below = total_height - height;
6263                     }
6264                 }
6265             }
6266         }
6267       else
6268         /* the scroll to isn't valid; ignore it.
6269          */
6270         {
6271           if (tree_view->priv->scroll_to_path && !path)
6272             {
6273               gtk_tree_row_reference_free (tree_view->priv->scroll_to_path);
6274               tree_view->priv->scroll_to_path = NULL;
6275             }
6276           if (path)
6277             gtk_tree_path_free (path);
6278           path = NULL;
6279         }
6280     }
6281
6282   /* We didn't have a scroll_to set, so we just handle things normally
6283    */
6284   if (path == NULL)
6285     {
6286       gint offset;
6287
6288       offset = _gtk_rbtree_find_offset (tree_view->priv->tree,
6289                                         TREE_WINDOW_Y_TO_RBTREE_Y (tree_view, 0),
6290                                         &tree, &node);
6291       if (node == NULL)
6292         {
6293           /* In this case, nothing has been validated */
6294           path = gtk_tree_path_new_first ();
6295           _gtk_tree_view_find_node (tree_view, path, &tree, &node);
6296         }
6297       else
6298         {
6299           path = _gtk_tree_view_find_path (tree_view, tree, node);
6300           total_height += offset;
6301         }
6302
6303       gtk_tree_model_get_iter (tree_view->priv->model, &iter, path);
6304
6305       if (GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_INVALID) ||
6306           GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_COLUMN_INVALID))
6307         {
6308           _gtk_tree_view_queue_draw_node (tree_view, tree, node, NULL);
6309           if (validate_row (tree_view, tree, node, &iter, path))
6310             size_changed = TRUE;
6311         }
6312       area_above = 0;
6313       area_below = total_height - gtk_tree_view_get_row_height (tree_view, node);
6314     }
6315
6316   above_path = gtk_tree_path_copy (path);
6317
6318   /* if we do not validate any row above the new top_row, we will make sure
6319    * that the row immediately above top_row has been validated. (if we do not
6320    * do this, _gtk_rbtree_find_offset will find the row above top_row, because
6321    * when invalidated that row's height will be zero. and this will mess up
6322    * scrolling).
6323    */
6324   if (area_above == 0)
6325     {
6326       GtkRBTree *tmptree;
6327       GtkRBNode *tmpnode;
6328
6329       _gtk_tree_view_find_node (tree_view, above_path, &tmptree, &tmpnode);
6330       _gtk_rbtree_prev_full (tmptree, tmpnode, &tmptree, &tmpnode);
6331
6332       if (tmpnode)
6333         {
6334           GtkTreePath *tmppath;
6335           GtkTreeIter tmpiter;
6336
6337           tmppath = _gtk_tree_view_find_path (tree_view, tmptree, tmpnode);
6338           gtk_tree_model_get_iter (tree_view->priv->model, &tmpiter, tmppath);
6339
6340           if (GTK_RBNODE_FLAG_SET (tmpnode, GTK_RBNODE_INVALID) ||
6341               GTK_RBNODE_FLAG_SET (tmpnode, GTK_RBNODE_COLUMN_INVALID))
6342             {
6343               _gtk_tree_view_queue_draw_node (tree_view, tmptree, tmpnode, NULL);
6344               if (validate_row (tree_view, tmptree, tmpnode, &tmpiter, tmppath))
6345                 size_changed = TRUE;
6346             }
6347
6348           gtk_tree_path_free (tmppath);
6349         }
6350     }
6351
6352   /* Now, we walk forwards and backwards, measuring rows. Unfortunately,
6353    * backwards is much slower then forward, as there is no iter_prev function.
6354    * We go forwards first in case we run out of tree.  Then we go backwards to
6355    * fill out the top.
6356    */
6357   while (node && area_below > 0)
6358     {
6359       if (node->children)
6360         {
6361           GtkTreeIter parent = iter;
6362           gboolean has_child;
6363
6364           tree = node->children;
6365           node = tree->root;
6366
6367           g_assert (node != tree->nil);
6368
6369           while (node->left != tree->nil)
6370             node = node->left;
6371           has_child = gtk_tree_model_iter_children (tree_view->priv->model,
6372                                                     &iter,
6373                                                     &parent);
6374           TREE_VIEW_INTERNAL_ASSERT_VOID (has_child);
6375           gtk_tree_path_down (path);
6376         }
6377       else
6378         {
6379           gboolean done = FALSE;
6380           do
6381             {
6382               node = _gtk_rbtree_next (tree, node);
6383               if (node != NULL)
6384                 {
6385                   gboolean has_next = gtk_tree_model_iter_next (tree_view->priv->model, &iter);
6386                   done = TRUE;
6387                   gtk_tree_path_next (path);
6388
6389                   /* Sanity Check! */
6390                   TREE_VIEW_INTERNAL_ASSERT_VOID (has_next);
6391                 }
6392               else
6393                 {
6394                   GtkTreeIter parent_iter = iter;
6395                   gboolean has_parent;
6396
6397                   node = tree->parent_node;
6398                   tree = tree->parent_tree;
6399                   if (tree == NULL)
6400                     break;
6401                   has_parent = gtk_tree_model_iter_parent (tree_view->priv->model,
6402                                                            &iter,
6403                                                            &parent_iter);
6404                   gtk_tree_path_up (path);
6405
6406                   /* Sanity check */
6407                   TREE_VIEW_INTERNAL_ASSERT_VOID (has_parent);
6408                 }
6409             }
6410           while (!done);
6411         }
6412
6413       if (!node)
6414         break;
6415
6416       if (GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_INVALID) ||
6417           GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_COLUMN_INVALID))
6418         {
6419           _gtk_tree_view_queue_draw_node (tree_view, tree, node, NULL);
6420           if (validate_row (tree_view, tree, node, &iter, path))
6421               size_changed = TRUE;
6422         }
6423
6424       area_below -= gtk_tree_view_get_row_height (tree_view, node);
6425     }
6426   gtk_tree_path_free (path);
6427
6428   /* If we ran out of tree, and have extra area_below left, we need to add it
6429    * to area_above */
6430   if (area_below > 0)
6431     area_above += area_below;
6432
6433   _gtk_tree_view_find_node (tree_view, above_path, &tree, &node);
6434
6435   /* We walk backwards */
6436   while (area_above > 0)
6437     {
6438       _gtk_rbtree_prev_full (tree, node, &tree, &node);
6439
6440       /* Always find the new path in the tree.  We cannot just assume
6441        * a gtk_tree_path_prev() is enough here, as there might be children
6442        * in between this node and the previous sibling node.  If this
6443        * appears to be a performance hotspot in profiles, we can look into
6444        * intrigate logic for keeping path, node and iter in sync like
6445        * we do for forward walks.  (Which will be hard because of the lacking
6446        * iter_prev).
6447        */
6448
6449       if (node == NULL)
6450         break;
6451
6452       gtk_tree_path_free (above_path);
6453       above_path = _gtk_tree_view_find_path (tree_view, tree, node);
6454
6455       gtk_tree_model_get_iter (tree_view->priv->model, &iter, above_path);
6456
6457       if (GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_INVALID) ||
6458           GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_COLUMN_INVALID))
6459         {
6460           _gtk_tree_view_queue_draw_node (tree_view, tree, node, NULL);
6461           if (validate_row (tree_view, tree, node, &iter, above_path))
6462             size_changed = TRUE;
6463         }
6464       area_above -= gtk_tree_view_get_row_height (tree_view, node);
6465     }
6466
6467   /* if we scrolled to a path, we need to set the dy here,
6468    * and sync the top row accordingly
6469    */
6470   if (tree_view->priv->scroll_to_path)
6471     {
6472       gtk_tree_view_set_top_row (tree_view, above_path, -area_above);
6473       gtk_tree_view_top_row_to_dy (tree_view);
6474
6475       need_redraw = TRUE;
6476     }
6477   else if (tree_view->priv->height <= gtk_adjustment_get_page_size (tree_view->priv->vadjustment))
6478     {
6479       /* when we are not scrolling, we should never set dy to something
6480        * else than zero. we update top_row to be in sync with dy = 0.
6481        */
6482       gtk_adjustment_set_value (GTK_ADJUSTMENT (tree_view->priv->vadjustment), 0);
6483       gtk_tree_view_dy_to_top_row (tree_view);
6484     }
6485   else if (gtk_adjustment_get_value (tree_view->priv->vadjustment) + gtk_adjustment_get_page_size (tree_view->priv->vadjustment) > tree_view->priv->height)
6486     {
6487       gtk_adjustment_set_value (GTK_ADJUSTMENT (tree_view->priv->vadjustment), tree_view->priv->height - gtk_adjustment_get_page_size (tree_view->priv->vadjustment));
6488       gtk_tree_view_dy_to_top_row (tree_view);
6489     }
6490   else
6491     gtk_tree_view_top_row_to_dy (tree_view);
6492
6493   /* update width/height and queue a resize */
6494   if (size_changed)
6495     {
6496       GtkRequisition requisition;
6497
6498       /* We temporarily guess a size, under the assumption that it will be the
6499        * same when we get our next size_allocate.  If we don't do this, we'll be
6500        * in an inconsistent state if we call top_row_to_dy. */
6501
6502       gtk_widget_get_preferred_size (GTK_WIDGET (tree_view),
6503                                      &requisition, NULL);
6504       gtk_adjustment_set_upper (tree_view->priv->hadjustment,
6505                                 MAX (gtk_adjustment_get_upper (tree_view->priv->hadjustment), requisition.width));
6506       gtk_adjustment_set_upper (tree_view->priv->vadjustment,
6507                                 MAX (gtk_adjustment_get_upper (tree_view->priv->vadjustment), requisition.height));
6508       gtk_widget_queue_resize (GTK_WIDGET (tree_view));
6509     }
6510
6511   if (tree_view->priv->scroll_to_path)
6512     {
6513       gtk_tree_row_reference_free (tree_view->priv->scroll_to_path);
6514       tree_view->priv->scroll_to_path = NULL;
6515     }
6516
6517   if (above_path)
6518     gtk_tree_path_free (above_path);
6519
6520   if (tree_view->priv->scroll_to_column)
6521     {
6522       tree_view->priv->scroll_to_column = NULL;
6523     }
6524   if (need_redraw)
6525     gtk_widget_queue_draw (GTK_WIDGET (tree_view));
6526 }
6527
6528 static void
6529 initialize_fixed_height_mode (GtkTreeView *tree_view)
6530 {
6531   if (!tree_view->priv->tree)
6532     return;
6533
6534   if (tree_view->priv->fixed_height < 0)
6535     {
6536       GtkTreeIter iter;
6537       GtkTreePath *path;
6538
6539       GtkRBTree *tree = NULL;
6540       GtkRBNode *node = NULL;
6541
6542       tree = tree_view->priv->tree;
6543       node = tree->root;
6544
6545       path = _gtk_tree_view_find_path (tree_view, tree, node);
6546       gtk_tree_model_get_iter (tree_view->priv->model, &iter, path);
6547
6548       validate_row (tree_view, tree, node, &iter, path);
6549
6550       gtk_tree_path_free (path);
6551
6552       tree_view->priv->fixed_height = gtk_tree_view_get_row_height (tree_view, node);
6553     }
6554
6555    _gtk_rbtree_set_fixed_height (tree_view->priv->tree,
6556                                  tree_view->priv->fixed_height, TRUE);
6557 }
6558
6559 /* Our strategy for finding nodes to validate is a little convoluted.  We find
6560  * the left-most uninvalidated node.  We then try walking right, validating
6561  * nodes.  Once we find a valid node, we repeat the previous process of finding
6562  * the first invalid node.
6563  */
6564
6565 static gboolean
6566 do_validate_rows (GtkTreeView *tree_view, gboolean queue_resize)
6567 {
6568   GtkRBTree *tree = NULL;
6569   GtkRBNode *node = NULL;
6570   gboolean validated_area = FALSE;
6571   gint retval = TRUE;
6572   GtkTreePath *path = NULL;
6573   GtkTreeIter iter;
6574   GTimer *timer;
6575   gint i = 0;
6576
6577   gint y = -1;
6578   gint prev_height = -1;
6579   gboolean fixed_height = TRUE;
6580
6581   g_assert (tree_view);
6582
6583   if (tree_view->priv->tree == NULL)
6584       return FALSE;
6585
6586   if (tree_view->priv->fixed_height_mode)
6587     {
6588       if (tree_view->priv->fixed_height < 0)
6589         initialize_fixed_height_mode (tree_view);
6590
6591       return FALSE;
6592     }
6593
6594   timer = g_timer_new ();
6595   g_timer_start (timer);
6596
6597   do
6598     {
6599       gboolean changed = FALSE;
6600
6601       if (! GTK_RBNODE_FLAG_SET (tree_view->priv->tree->root, GTK_RBNODE_DESCENDANTS_INVALID))
6602         {
6603           retval = FALSE;
6604           goto done;
6605         }
6606
6607       if (path != NULL)
6608         {
6609           node = _gtk_rbtree_next (tree, node);
6610           if (node != NULL)
6611             {
6612               TREE_VIEW_INTERNAL_ASSERT (gtk_tree_model_iter_next (tree_view->priv->model, &iter), FALSE);
6613               gtk_tree_path_next (path);
6614             }
6615           else
6616             {
6617               gtk_tree_path_free (path);
6618               path = NULL;
6619             }
6620         }
6621
6622       if (path == NULL)
6623         {
6624           tree = tree_view->priv->tree;
6625           node = tree_view->priv->tree->root;
6626
6627           g_assert (GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_DESCENDANTS_INVALID));
6628
6629           do
6630             {
6631               if (node->left != tree->nil &&
6632                   GTK_RBNODE_FLAG_SET (node->left, GTK_RBNODE_DESCENDANTS_INVALID))
6633                 {
6634                   node = node->left;
6635                 }
6636               else if (node->right != tree->nil &&
6637                        GTK_RBNODE_FLAG_SET (node->right, GTK_RBNODE_DESCENDANTS_INVALID))
6638                 {
6639                   node = node->right;
6640                 }
6641               else if (GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_INVALID) ||
6642                        GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_COLUMN_INVALID))
6643                 {
6644                   break;
6645                 }
6646               else if (node->children != NULL)
6647                 {
6648                   tree = node->children;
6649                   node = tree->root;
6650                 }
6651               else
6652                 /* RBTree corruption!  All bad */
6653                 g_assert_not_reached ();
6654             }
6655           while (TRUE);
6656           path = _gtk_tree_view_find_path (tree_view, tree, node);
6657           gtk_tree_model_get_iter (tree_view->priv->model, &iter, path);
6658         }
6659
6660       changed = validate_row (tree_view, tree, node, &iter, path);
6661       validated_area = changed || validated_area;
6662
6663       if (changed)
6664         {
6665           gint offset = gtk_tree_view_get_row_y_offset (tree_view, tree, node);
6666
6667           if (y == -1 || y > offset)
6668             y = offset;
6669         }
6670
6671       if (!tree_view->priv->fixed_height_check)
6672         {
6673           gint height;
6674
6675           height = gtk_tree_view_get_row_height (tree_view, node);
6676           if (prev_height < 0)
6677             prev_height = height;
6678           else if (prev_height != height)
6679             fixed_height = FALSE;
6680         }
6681
6682       i++;
6683     }
6684   while (g_timer_elapsed (timer, NULL) < GTK_TREE_VIEW_TIME_MS_PER_IDLE / 1000.);
6685
6686   if (!tree_view->priv->fixed_height_check)
6687    {
6688      if (fixed_height)
6689        _gtk_rbtree_set_fixed_height (tree_view->priv->tree, prev_height, FALSE);
6690
6691      tree_view->priv->fixed_height_check = 1;
6692    }
6693
6694  done:
6695   if (validated_area)
6696     {
6697       GtkRequisition requisition;
6698
6699       /* We temporarily guess a size, under the assumption that it will be the
6700        * same when we get our next size_allocate.  If we don't do this, we'll be
6701        * in an inconsistent state when we call top_row_to_dy. */
6702
6703       /* FIXME: This is called from size_request, for some reason it is not infinitely
6704        * recursing, we cannot call gtk_widget_get_preferred_size() here because that's
6705        * not allowed (from inside ->get_preferred_width/height() implementations, one
6706        * should call the vfuncs directly). However what is desired here is the full
6707        * size including any margins and limited by any alignment (i.e. after
6708        * GtkWidget:adjust_size_request() is called).
6709        *
6710        * Currently bypassing this but the real solution is to not update the scroll adjustments
6711        * untill we've recieved an allocation (never update scroll adjustments from size-requests).
6712        */
6713       gtk_tree_view_size_request (GTK_WIDGET (tree_view), &requisition, FALSE);
6714
6715       /* If rows above the current position have changed height, this has
6716        * affected the current view and thus needs a redraw.
6717        */
6718       if (y != -1 && y < gtk_adjustment_get_value (tree_view->priv->vadjustment))
6719         gtk_widget_queue_draw (GTK_WIDGET (tree_view));
6720
6721       gtk_adjustment_set_upper (tree_view->priv->hadjustment,
6722                                 MAX (gtk_adjustment_get_upper (tree_view->priv->hadjustment), requisition.width));
6723       gtk_adjustment_set_upper (tree_view->priv->vadjustment,
6724                                 MAX (gtk_adjustment_get_upper (tree_view->priv->vadjustment), requisition.height));
6725
6726       if (queue_resize)
6727         gtk_widget_queue_resize_no_redraw (GTK_WIDGET (tree_view));
6728     }
6729
6730   if (path) gtk_tree_path_free (path);
6731   g_timer_destroy (timer);
6732
6733   return retval;
6734 }
6735
6736 static gboolean
6737 validate_rows (GtkTreeView *tree_view)
6738 {
6739   gboolean retval;
6740
6741   retval = do_validate_rows (tree_view, TRUE);
6742
6743   if (! retval && tree_view->priv->validate_rows_timer)
6744     {
6745       g_source_remove (tree_view->priv->validate_rows_timer);
6746       tree_view->priv->validate_rows_timer = 0;
6747     }
6748
6749   return retval;
6750 }
6751
6752 static gboolean
6753 validate_rows_handler (GtkTreeView *tree_view)
6754 {
6755   gboolean retval;
6756
6757   retval = do_validate_rows (tree_view, TRUE);
6758   if (! retval && tree_view->priv->validate_rows_timer)
6759     {
6760       g_source_remove (tree_view->priv->validate_rows_timer);
6761       tree_view->priv->validate_rows_timer = 0;
6762     }
6763
6764   return retval;
6765 }
6766
6767 static gboolean
6768 do_presize_handler (GtkTreeView *tree_view)
6769 {
6770   if (tree_view->priv->mark_rows_col_dirty)
6771     {
6772       if (tree_view->priv->tree)
6773         _gtk_rbtree_column_invalid (tree_view->priv->tree);
6774       tree_view->priv->mark_rows_col_dirty = FALSE;
6775     }
6776   validate_visible_area (tree_view);
6777   tree_view->priv->presize_handler_timer = 0;
6778
6779   if (tree_view->priv->fixed_height_mode)
6780     {
6781       GtkRequisition requisition;
6782
6783       gtk_widget_get_preferred_size (GTK_WIDGET (tree_view),
6784                                      &requisition, NULL);
6785
6786       gtk_adjustment_set_upper (tree_view->priv->hadjustment,
6787                                 MAX (gtk_adjustment_get_upper (tree_view->priv->hadjustment), requisition.width));
6788       gtk_adjustment_set_upper (tree_view->priv->vadjustment,
6789                                 MAX (gtk_adjustment_get_upper (tree_view->priv->vadjustment), requisition.height));
6790       gtk_widget_queue_resize (GTK_WIDGET (tree_view));
6791     }
6792
6793   return FALSE;
6794 }
6795
6796 static gboolean
6797 presize_handler_callback (gpointer data)
6798 {
6799   do_presize_handler (GTK_TREE_VIEW (data));
6800
6801   return FALSE;
6802 }
6803
6804 static void
6805 install_presize_handler (GtkTreeView *tree_view)
6806 {
6807   if (! gtk_widget_get_realized (GTK_WIDGET (tree_view)))
6808     return;
6809
6810   if (! tree_view->priv->presize_handler_timer)
6811     {
6812       tree_view->priv->presize_handler_timer =
6813         gdk_threads_add_idle_full (GTK_PRIORITY_RESIZE - 2, presize_handler_callback, tree_view, NULL);
6814     }
6815   if (! tree_view->priv->validate_rows_timer)
6816     {
6817       tree_view->priv->validate_rows_timer =
6818         gdk_threads_add_idle_full (GTK_TREE_VIEW_PRIORITY_VALIDATE, (GSourceFunc) validate_rows_handler, tree_view, NULL);
6819     }
6820 }
6821
6822 static void
6823 gtk_tree_view_bin_process_updates (GtkTreeView *tree_view)
6824 {
6825   /* Prior to drawing, we make sure the visible area is validated. */
6826   if (tree_view->priv->presize_handler_timer)
6827     {
6828       g_source_remove (tree_view->priv->presize_handler_timer);
6829       tree_view->priv->presize_handler_timer = 0;
6830
6831       do_presize_handler (tree_view);
6832     }
6833
6834   gdk_window_process_updates (tree_view->priv->bin_window, TRUE);
6835 }
6836
6837 static gboolean
6838 scroll_sync_handler (GtkTreeView *tree_view)
6839 {
6840   if (tree_view->priv->height <= gtk_adjustment_get_page_size (tree_view->priv->vadjustment))
6841     gtk_adjustment_set_value (GTK_ADJUSTMENT (tree_view->priv->vadjustment), 0);
6842   else if (gtk_tree_row_reference_valid (tree_view->priv->top_row))
6843     gtk_tree_view_top_row_to_dy (tree_view);
6844   else
6845     gtk_tree_view_dy_to_top_row (tree_view);
6846
6847   tree_view->priv->scroll_sync_timer = 0;
6848
6849   return FALSE;
6850 }
6851
6852 static void
6853 install_scroll_sync_handler (GtkTreeView *tree_view)
6854 {
6855   if (!gtk_widget_get_realized (GTK_WIDGET (tree_view)))
6856     return;
6857
6858   if (!tree_view->priv->scroll_sync_timer)
6859     {
6860       tree_view->priv->scroll_sync_timer =
6861         gdk_threads_add_idle_full (GTK_TREE_VIEW_PRIORITY_SCROLL_SYNC, (GSourceFunc) scroll_sync_handler, tree_view, NULL);
6862     }
6863 }
6864
6865 static void
6866 gtk_tree_view_set_top_row (GtkTreeView *tree_view,
6867                            GtkTreePath *path,
6868                            gint         offset)
6869 {
6870   gtk_tree_row_reference_free (tree_view->priv->top_row);
6871
6872   if (!path)
6873     {
6874       tree_view->priv->top_row = NULL;
6875       tree_view->priv->top_row_dy = 0;
6876     }
6877   else
6878     {
6879       tree_view->priv->top_row = gtk_tree_row_reference_new_proxy (G_OBJECT (tree_view), tree_view->priv->model, path);
6880       tree_view->priv->top_row_dy = offset;
6881     }
6882 }
6883
6884 /* Always call this iff dy is in the visible range.  If the tree is empty, then
6885  * it's set to be NULL, and top_row_dy is 0;
6886  */
6887 static void
6888 gtk_tree_view_dy_to_top_row (GtkTreeView *tree_view)
6889 {
6890   gint offset;
6891   GtkTreePath *path;
6892   GtkRBTree *tree;
6893   GtkRBNode *node;
6894
6895   if (tree_view->priv->tree == NULL)
6896     {
6897       gtk_tree_view_set_top_row (tree_view, NULL, 0);
6898     }
6899   else
6900     {
6901       offset = _gtk_rbtree_find_offset (tree_view->priv->tree,
6902                                         tree_view->priv->dy,
6903                                         &tree, &node);
6904
6905       if (tree == NULL)
6906         {
6907           gtk_tree_view_set_top_row (tree_view, NULL, 0);
6908         }
6909       else
6910         {
6911           path = _gtk_tree_view_find_path (tree_view, tree, node);
6912           gtk_tree_view_set_top_row (tree_view, path, offset);
6913           gtk_tree_path_free (path);
6914         }
6915     }
6916 }
6917
6918 static void
6919 gtk_tree_view_top_row_to_dy (GtkTreeView *tree_view)
6920 {
6921   GtkTreePath *path;
6922   GtkRBTree *tree;
6923   GtkRBNode *node;
6924   int new_dy;
6925
6926   /* Avoid recursive calls */
6927   if (tree_view->priv->in_top_row_to_dy)
6928     return;
6929
6930   if (tree_view->priv->top_row)
6931     path = gtk_tree_row_reference_get_path (tree_view->priv->top_row);
6932   else
6933     path = NULL;
6934
6935   if (!path)
6936     tree = NULL;
6937   else
6938     _gtk_tree_view_find_node (tree_view, path, &tree, &node);
6939
6940   if (path)
6941     gtk_tree_path_free (path);
6942
6943   if (tree == NULL)
6944     {
6945       /* keep dy and set new toprow */
6946       gtk_tree_row_reference_free (tree_view->priv->top_row);
6947       tree_view->priv->top_row = NULL;
6948       tree_view->priv->top_row_dy = 0;
6949       /* DO NOT install the idle handler */
6950       gtk_tree_view_dy_to_top_row (tree_view);
6951       return;
6952     }
6953
6954   if (gtk_tree_view_get_row_height (tree_view, node)
6955       < tree_view->priv->top_row_dy)
6956     {
6957       /* new top row -- do NOT install the idle handler */
6958       gtk_tree_view_dy_to_top_row (tree_view);
6959       return;
6960     }
6961
6962   new_dy = _gtk_rbtree_node_find_offset (tree, node);
6963   new_dy += tree_view->priv->top_row_dy;
6964
6965   if (new_dy + gtk_adjustment_get_page_size (tree_view->priv->vadjustment) > tree_view->priv->height)
6966     new_dy = tree_view->priv->height - gtk_adjustment_get_page_size (tree_view->priv->vadjustment);
6967
6968   new_dy = MAX (0, new_dy);
6969
6970   tree_view->priv->in_top_row_to_dy = TRUE;
6971   gtk_adjustment_set_value (tree_view->priv->vadjustment, (gdouble)new_dy);
6972   tree_view->priv->in_top_row_to_dy = FALSE;
6973 }
6974
6975
6976 void
6977 _gtk_tree_view_install_mark_rows_col_dirty (GtkTreeView *tree_view,
6978                                             gboolean     install_handler)
6979 {
6980   tree_view->priv->mark_rows_col_dirty = TRUE;
6981
6982   if (install_handler)
6983     install_presize_handler (tree_view);
6984 }
6985
6986 /*
6987  * This function works synchronously (due to the while (validate_rows...)
6988  * loop).
6989  *
6990  * There was a check for column_type != GTK_TREE_VIEW_COLUMN_AUTOSIZE
6991  * here. You now need to check that yourself.
6992  */
6993 void
6994 _gtk_tree_view_column_autosize (GtkTreeView *tree_view,
6995                                 GtkTreeViewColumn *column)
6996 {
6997   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
6998   g_return_if_fail (GTK_IS_TREE_VIEW_COLUMN (column));
6999
7000   _gtk_tree_view_column_cell_set_dirty (column, FALSE);
7001
7002   do_presize_handler (tree_view);
7003   while (validate_rows (tree_view));
7004
7005   gtk_widget_queue_resize (GTK_WIDGET (tree_view));
7006 }
7007
7008 /* Drag-and-drop */
7009
7010 static void
7011 set_source_row (GdkDragContext *context,
7012                 GtkTreeModel   *model,
7013                 GtkTreePath    *source_row)
7014 {
7015   g_object_set_data_full (G_OBJECT (context),
7016                           I_("gtk-tree-view-source-row"),
7017                           source_row ? gtk_tree_row_reference_new (model, source_row) : NULL,
7018                           (GDestroyNotify) (source_row ? gtk_tree_row_reference_free : NULL));
7019 }
7020
7021 static GtkTreePath*
7022 get_source_row (GdkDragContext *context)
7023 {
7024   GtkTreeRowReference *ref =
7025     g_object_get_data (G_OBJECT (context), "gtk-tree-view-source-row");
7026
7027   if (ref)
7028     return gtk_tree_row_reference_get_path (ref);
7029   else
7030     return NULL;
7031 }
7032
7033 typedef struct
7034 {
7035   GtkTreeRowReference *dest_row;
7036   guint                path_down_mode   : 1;
7037   guint                empty_view_drop  : 1;
7038   guint                drop_append_mode : 1;
7039 }
7040 DestRow;
7041
7042 static void
7043 dest_row_free (gpointer data)
7044 {
7045   DestRow *dr = (DestRow *)data;
7046
7047   gtk_tree_row_reference_free (dr->dest_row);
7048   g_slice_free (DestRow, dr);
7049 }
7050
7051 static void
7052 set_dest_row (GdkDragContext *context,
7053               GtkTreeModel   *model,
7054               GtkTreePath    *dest_row,
7055               gboolean        path_down_mode,
7056               gboolean        empty_view_drop,
7057               gboolean        drop_append_mode)
7058 {
7059   DestRow *dr;
7060
7061   if (!dest_row)
7062     {
7063       g_object_set_data_full (G_OBJECT (context), I_("gtk-tree-view-dest-row"),
7064                               NULL, NULL);
7065       return;
7066     }
7067
7068   dr = g_slice_new (DestRow);
7069
7070   dr->dest_row = gtk_tree_row_reference_new (model, dest_row);
7071   dr->path_down_mode = path_down_mode != FALSE;
7072   dr->empty_view_drop = empty_view_drop != FALSE;
7073   dr->drop_append_mode = drop_append_mode != FALSE;
7074
7075   g_object_set_data_full (G_OBJECT (context), I_("gtk-tree-view-dest-row"),
7076                           dr, (GDestroyNotify) dest_row_free);
7077 }
7078
7079 static GtkTreePath*
7080 get_dest_row (GdkDragContext *context,
7081               gboolean       *path_down_mode)
7082 {
7083   DestRow *dr =
7084     g_object_get_data (G_OBJECT (context), "gtk-tree-view-dest-row");
7085
7086   if (dr)
7087     {
7088       GtkTreePath *path = NULL;
7089
7090       if (path_down_mode)
7091         *path_down_mode = dr->path_down_mode;
7092
7093       if (dr->dest_row)
7094         path = gtk_tree_row_reference_get_path (dr->dest_row);
7095       else if (dr->empty_view_drop)
7096         path = gtk_tree_path_new_from_indices (0, -1);
7097       else
7098         path = NULL;
7099
7100       if (path && dr->drop_append_mode)
7101         gtk_tree_path_next (path);
7102
7103       return path;
7104     }
7105   else
7106     return NULL;
7107 }
7108
7109 /* Get/set whether drag_motion requested the drag data and
7110  * drag_data_received should thus not actually insert the data,
7111  * since the data doesn't result from a drop.
7112  */
7113 static void
7114 set_status_pending (GdkDragContext *context,
7115                     GdkDragAction   suggested_action)
7116 {
7117   g_object_set_data (G_OBJECT (context),
7118                      I_("gtk-tree-view-status-pending"),
7119                      GINT_TO_POINTER (suggested_action));
7120 }
7121
7122 static GdkDragAction
7123 get_status_pending (GdkDragContext *context)
7124 {
7125   return GPOINTER_TO_INT (g_object_get_data (G_OBJECT (context),
7126                                              "gtk-tree-view-status-pending"));
7127 }
7128
7129 static TreeViewDragInfo*
7130 get_info (GtkTreeView *tree_view)
7131 {
7132   return g_object_get_data (G_OBJECT (tree_view), "gtk-tree-view-drag-info");
7133 }
7134
7135 static void
7136 destroy_info (TreeViewDragInfo *di)
7137 {
7138   g_slice_free (TreeViewDragInfo, di);
7139 }
7140
7141 static TreeViewDragInfo*
7142 ensure_info (GtkTreeView *tree_view)
7143 {
7144   TreeViewDragInfo *di;
7145
7146   di = get_info (tree_view);
7147
7148   if (di == NULL)
7149     {
7150       di = g_slice_new0 (TreeViewDragInfo);
7151
7152       g_object_set_data_full (G_OBJECT (tree_view),
7153                               I_("gtk-tree-view-drag-info"),
7154                               di,
7155                               (GDestroyNotify) destroy_info);
7156     }
7157
7158   return di;
7159 }
7160
7161 static void
7162 remove_info (GtkTreeView *tree_view)
7163 {
7164   g_object_set_data (G_OBJECT (tree_view), I_("gtk-tree-view-drag-info"), NULL);
7165 }
7166
7167 #if 0
7168 static gint
7169 drag_scan_timeout (gpointer data)
7170 {
7171   GtkTreeView *tree_view;
7172   gint x, y;
7173   GdkModifierType state;
7174   GtkTreePath *path = NULL;
7175   GtkTreeViewColumn *column = NULL;
7176   GdkRectangle visible_rect;
7177
7178   GDK_THREADS_ENTER ();
7179
7180   tree_view = GTK_TREE_VIEW (data);
7181
7182   gdk_window_get_device_position (tree_view->priv->bin_window,
7183                                   gdk_device_manager_get_client_pointer (
7184                                     gdk_display_get_device_manager (
7185                                       gtk_widget_get_display (GTK_WIDGET (tree_view)))),
7186                                   &x, &y, &state);
7187
7188   gtk_tree_view_get_visible_rect (tree_view, &visible_rect);
7189
7190   /* See if we are near the edge. */
7191   if ((x - visible_rect.x) < SCROLL_EDGE_SIZE ||
7192       (visible_rect.x + visible_rect.width - x) < SCROLL_EDGE_SIZE ||
7193       (y - visible_rect.y) < SCROLL_EDGE_SIZE ||
7194       (visible_rect.y + visible_rect.height - y) < SCROLL_EDGE_SIZE)
7195     {
7196       gtk_tree_view_get_path_at_pos (tree_view,
7197                                      tree_view->priv->bin_window,
7198                                      x, y,
7199                                      &path,
7200                                      &column,
7201                                      NULL,
7202                                      NULL);
7203
7204       if (path != NULL)
7205         {
7206           gtk_tree_view_scroll_to_cell (tree_view,
7207                                         path,
7208                                         column,
7209                                         TRUE,
7210                                         0.5, 0.5);
7211
7212           gtk_tree_path_free (path);
7213         }
7214     }
7215
7216   GDK_THREADS_LEAVE ();
7217
7218   return TRUE;
7219 }
7220 #endif /* 0 */
7221
7222 static void
7223 add_scroll_timeout (GtkTreeView *tree_view)
7224 {
7225   if (tree_view->priv->scroll_timeout == 0)
7226     {
7227       tree_view->priv->scroll_timeout =
7228         gdk_threads_add_timeout (150, scroll_row_timeout, tree_view);
7229     }
7230 }
7231
7232 static void
7233 remove_scroll_timeout (GtkTreeView *tree_view)
7234 {
7235   if (tree_view->priv->scroll_timeout != 0)
7236     {
7237       g_source_remove (tree_view->priv->scroll_timeout);
7238       tree_view->priv->scroll_timeout = 0;
7239     }
7240 }
7241
7242 static gboolean
7243 check_model_dnd (GtkTreeModel *model,
7244                  GType         required_iface,
7245                  const gchar  *signal)
7246 {
7247   if (model == NULL || !G_TYPE_CHECK_INSTANCE_TYPE ((model), required_iface))
7248     {
7249       g_warning ("You must override the default '%s' handler "
7250                  "on GtkTreeView when using models that don't support "
7251                  "the %s interface and enabling drag-and-drop. The simplest way to do this "
7252                  "is to connect to '%s' and call "
7253                  "g_signal_stop_emission_by_name() in your signal handler to prevent "
7254                  "the default handler from running. Look at the source code "
7255                  "for the default handler in gtktreeview.c to get an idea what "
7256                  "your handler should do. (gtktreeview.c is in the GTK source "
7257                  "code.) If you're using GTK from a language other than C, "
7258                  "there may be a more natural way to override default handlers, e.g. via derivation.",
7259                  signal, g_type_name (required_iface), signal);
7260       return FALSE;
7261     }
7262   else
7263     return TRUE;
7264 }
7265
7266 static void
7267 remove_open_timeout (GtkTreeView *tree_view)
7268 {
7269   if (tree_view->priv->open_dest_timeout != 0)
7270     {
7271       g_source_remove (tree_view->priv->open_dest_timeout);
7272       tree_view->priv->open_dest_timeout = 0;
7273     }
7274 }
7275
7276
7277 static gint
7278 open_row_timeout (gpointer data)
7279 {
7280   GtkTreeView *tree_view = data;
7281   GtkTreePath *dest_path = NULL;
7282   GtkTreeViewDropPosition pos;
7283   gboolean result = FALSE;
7284
7285   gtk_tree_view_get_drag_dest_row (tree_view,
7286                                    &dest_path,
7287                                    &pos);
7288
7289   if (dest_path &&
7290       (pos == GTK_TREE_VIEW_DROP_INTO_OR_AFTER ||
7291        pos == GTK_TREE_VIEW_DROP_INTO_OR_BEFORE))
7292     {
7293       gtk_tree_view_expand_row (tree_view, dest_path, FALSE);
7294       tree_view->priv->open_dest_timeout = 0;
7295
7296       gtk_tree_path_free (dest_path);
7297     }
7298   else
7299     {
7300       if (dest_path)
7301         gtk_tree_path_free (dest_path);
7302
7303       result = TRUE;
7304     }
7305
7306   return result;
7307 }
7308
7309 static gboolean
7310 scroll_row_timeout (gpointer data)
7311 {
7312   GtkTreeView *tree_view = data;
7313
7314   gtk_tree_view_vertical_autoscroll (tree_view);
7315
7316   if (tree_view->priv->rubber_band_status == RUBBER_BAND_ACTIVE)
7317     gtk_tree_view_update_rubber_band (tree_view);
7318
7319   return TRUE;
7320 }
7321
7322 /* Returns TRUE if event should not be propagated to parent widgets */
7323 static gboolean
7324 set_destination_row (GtkTreeView    *tree_view,
7325                      GdkDragContext *context,
7326                      /* coordinates relative to the widget */
7327                      gint            x,
7328                      gint            y,
7329                      GdkDragAction  *suggested_action,
7330                      GdkAtom        *target)
7331 {
7332   GtkTreePath *path = NULL;
7333   GtkTreeViewDropPosition pos;
7334   GtkTreeViewDropPosition old_pos;
7335   TreeViewDragInfo *di;
7336   GtkWidget *widget;
7337   GtkTreePath *old_dest_path = NULL;
7338   gboolean can_drop = FALSE;
7339
7340   *suggested_action = 0;
7341   *target = GDK_NONE;
7342
7343   widget = GTK_WIDGET (tree_view);
7344
7345   di = get_info (tree_view);
7346
7347   if (di == NULL || y - gtk_tree_view_get_effective_header_height (tree_view) < 0)
7348     {
7349       /* someone unset us as a drag dest, note that if
7350        * we return FALSE drag_leave isn't called
7351        */
7352
7353       gtk_tree_view_set_drag_dest_row (tree_view,
7354                                        NULL,
7355                                        GTK_TREE_VIEW_DROP_BEFORE);
7356
7357       remove_scroll_timeout (GTK_TREE_VIEW (widget));
7358       remove_open_timeout (GTK_TREE_VIEW (widget));
7359
7360       return FALSE; /* no longer a drop site */
7361     }
7362
7363   *target = gtk_drag_dest_find_target (widget, context,
7364                                        gtk_drag_dest_get_target_list (widget));
7365   if (*target == GDK_NONE)
7366     {
7367       return FALSE;
7368     }
7369
7370   if (!gtk_tree_view_get_dest_row_at_pos (tree_view,
7371                                           x, y,
7372                                           &path,
7373                                           &pos))
7374     {
7375       gint n_children;
7376       GtkTreeModel *model;
7377
7378       remove_open_timeout (tree_view);
7379
7380       /* the row got dropped on empty space, let's setup a special case
7381        */
7382
7383       if (path)
7384         gtk_tree_path_free (path);
7385
7386       model = gtk_tree_view_get_model (tree_view);
7387
7388       n_children = gtk_tree_model_iter_n_children (model, NULL);
7389       if (n_children)
7390         {
7391           pos = GTK_TREE_VIEW_DROP_AFTER;
7392           path = gtk_tree_path_new_from_indices (n_children - 1, -1);
7393         }
7394       else
7395         {
7396           pos = GTK_TREE_VIEW_DROP_BEFORE;
7397           path = gtk_tree_path_new_from_indices (0, -1);
7398         }
7399
7400       can_drop = TRUE;
7401
7402       goto out;
7403     }
7404
7405   g_assert (path);
7406
7407   /* If we left the current row's "open" zone, unset the timeout for
7408    * opening the row
7409    */
7410   gtk_tree_view_get_drag_dest_row (tree_view,
7411                                    &old_dest_path,
7412                                    &old_pos);
7413
7414   if (old_dest_path &&
7415       (gtk_tree_path_compare (path, old_dest_path) != 0 ||
7416        !(pos == GTK_TREE_VIEW_DROP_INTO_OR_AFTER ||
7417          pos == GTK_TREE_VIEW_DROP_INTO_OR_BEFORE)))
7418     remove_open_timeout (tree_view);
7419
7420   if (old_dest_path)
7421     gtk_tree_path_free (old_dest_path);
7422
7423   if (TRUE /* FIXME if the location droppable predicate */)
7424     {
7425       can_drop = TRUE;
7426     }
7427
7428 out:
7429   if (can_drop)
7430     {
7431       GtkWidget *source_widget;
7432
7433       *suggested_action = gdk_drag_context_get_suggested_action (context);
7434       source_widget = gtk_drag_get_source_widget (context);
7435
7436       if (source_widget == widget)
7437         {
7438           /* Default to MOVE, unless the user has
7439            * pressed ctrl or shift to affect available actions
7440            */
7441           if ((gdk_drag_context_get_actions (context) & GDK_ACTION_MOVE) != 0)
7442             *suggested_action = GDK_ACTION_MOVE;
7443         }
7444
7445       gtk_tree_view_set_drag_dest_row (GTK_TREE_VIEW (widget),
7446                                        path, pos);
7447     }
7448   else
7449     {
7450       /* can't drop here */
7451       remove_open_timeout (tree_view);
7452
7453       gtk_tree_view_set_drag_dest_row (GTK_TREE_VIEW (widget),
7454                                        NULL,
7455                                        GTK_TREE_VIEW_DROP_BEFORE);
7456     }
7457
7458   if (path)
7459     gtk_tree_path_free (path);
7460
7461   return TRUE;
7462 }
7463
7464 static GtkTreePath*
7465 get_logical_dest_row (GtkTreeView *tree_view,
7466                       gboolean    *path_down_mode,
7467                       gboolean    *drop_append_mode)
7468 {
7469   /* adjust path to point to the row the drop goes in front of */
7470   GtkTreePath *path = NULL;
7471   GtkTreeViewDropPosition pos;
7472
7473   g_return_val_if_fail (path_down_mode != NULL, NULL);
7474   g_return_val_if_fail (drop_append_mode != NULL, NULL);
7475
7476   *path_down_mode = FALSE;
7477   *drop_append_mode = 0;
7478
7479   gtk_tree_view_get_drag_dest_row (tree_view, &path, &pos);
7480
7481   if (path == NULL)
7482     return NULL;
7483
7484   if (pos == GTK_TREE_VIEW_DROP_BEFORE)
7485     ; /* do nothing */
7486   else if (pos == GTK_TREE_VIEW_DROP_INTO_OR_BEFORE ||
7487            pos == GTK_TREE_VIEW_DROP_INTO_OR_AFTER)
7488     *path_down_mode = TRUE;
7489   else
7490     {
7491       GtkTreeIter iter;
7492       GtkTreeModel *model = gtk_tree_view_get_model (tree_view);
7493
7494       g_assert (pos == GTK_TREE_VIEW_DROP_AFTER);
7495
7496       if (!gtk_tree_model_get_iter (model, &iter, path) ||
7497           !gtk_tree_model_iter_next (model, &iter))
7498         *drop_append_mode = 1;
7499       else
7500         {
7501           *drop_append_mode = 0;
7502           gtk_tree_path_next (path);
7503         }
7504     }
7505
7506   return path;
7507 }
7508
7509 static gboolean
7510 gtk_tree_view_maybe_begin_dragging_row (GtkTreeView      *tree_view,
7511                                         GdkEventMotion   *event)
7512 {
7513   GtkWidget *widget = GTK_WIDGET (tree_view);
7514   GdkDragContext *context;
7515   TreeViewDragInfo *di;
7516   GtkTreePath *path = NULL;
7517   gint button;
7518   gint cell_x, cell_y;
7519   GtkTreeModel *model;
7520   gboolean retval = FALSE;
7521
7522   di = get_info (tree_view);
7523
7524   if (di == NULL || !di->source_set)
7525     goto out;
7526
7527   if (tree_view->priv->pressed_button < 0)
7528     goto out;
7529
7530   if (!gtk_drag_check_threshold (widget,
7531                                  tree_view->priv->press_start_x,
7532                                  tree_view->priv->press_start_y,
7533                                  event->x, event->y))
7534     goto out;
7535
7536   model = gtk_tree_view_get_model (tree_view);
7537
7538   if (model == NULL)
7539     goto out;
7540
7541   button = tree_view->priv->pressed_button;
7542   tree_view->priv->pressed_button = -1;
7543
7544   gtk_tree_view_get_path_at_pos (tree_view,
7545                                  tree_view->priv->press_start_x,
7546                                  tree_view->priv->press_start_y,
7547                                  &path,
7548                                  NULL,
7549                                  &cell_x,
7550                                  &cell_y);
7551
7552   if (path == NULL)
7553     goto out;
7554
7555   if (!GTK_IS_TREE_DRAG_SOURCE (model) ||
7556       !gtk_tree_drag_source_row_draggable (GTK_TREE_DRAG_SOURCE (model),
7557                                            path))
7558     goto out;
7559
7560   if (!(GDK_BUTTON1_MASK << (button - 1) & di->start_button_mask))
7561     goto out;
7562
7563   /* Now we can begin the drag */
7564
7565   retval = TRUE;
7566
7567   context = gtk_drag_begin (widget,
7568                             gtk_drag_source_get_target_list (widget),
7569                             di->source_actions,
7570                             button,
7571                             (GdkEvent*)event);
7572
7573   set_source_row (context, model, path);
7574
7575  out:
7576   if (path)
7577     gtk_tree_path_free (path);
7578
7579   return retval;
7580 }
7581
7582
7583 static void
7584 gtk_tree_view_drag_begin (GtkWidget      *widget,
7585                           GdkDragContext *context)
7586 {
7587   GtkTreeView *tree_view;
7588   GtkTreePath *path = NULL;
7589   gint cell_x, cell_y;
7590   cairo_surface_t *row_pix;
7591   TreeViewDragInfo *di;
7592
7593   tree_view = GTK_TREE_VIEW (widget);
7594
7595   /* if the user uses a custom DND source impl, we don't set the icon here */
7596   di = get_info (tree_view);
7597
7598   if (di == NULL || !di->source_set)
7599     return;
7600
7601   gtk_tree_view_get_path_at_pos (tree_view,
7602                                  tree_view->priv->press_start_x,
7603                                  tree_view->priv->press_start_y,
7604                                  &path,
7605                                  NULL,
7606                                  &cell_x,
7607                                  &cell_y);
7608
7609   g_return_if_fail (path != NULL);
7610
7611   row_pix = gtk_tree_view_create_row_drag_icon (tree_view,
7612                                                 path);
7613   cairo_surface_set_device_offset (row_pix,
7614                                    /* the + 1 is for the black border in the icon */
7615                                    - (tree_view->priv->press_start_x + 1),
7616                                    - (cell_y + 1));
7617
7618   gtk_drag_set_icon_surface (context, row_pix);
7619
7620   cairo_surface_destroy (row_pix);
7621   gtk_tree_path_free (path);
7622 }
7623
7624 static void
7625 gtk_tree_view_drag_end (GtkWidget      *widget,
7626                         GdkDragContext *context)
7627 {
7628   /* do nothing */
7629 }
7630
7631 /* Default signal implementations for the drag signals */
7632 static void
7633 gtk_tree_view_drag_data_get (GtkWidget        *widget,
7634                              GdkDragContext   *context,
7635                              GtkSelectionData *selection_data,
7636                              guint             info,
7637                              guint             time)
7638 {
7639   GtkTreeView *tree_view;
7640   GtkTreeModel *model;
7641   TreeViewDragInfo *di;
7642   GtkTreePath *source_row;
7643
7644   tree_view = GTK_TREE_VIEW (widget);
7645
7646   model = gtk_tree_view_get_model (tree_view);
7647
7648   if (model == NULL)
7649     return;
7650
7651   di = get_info (GTK_TREE_VIEW (widget));
7652
7653   if (di == NULL)
7654     return;
7655
7656   source_row = get_source_row (context);
7657
7658   if (source_row == NULL)
7659     return;
7660
7661   /* We can implement the GTK_TREE_MODEL_ROW target generically for
7662    * any model; for DragSource models there are some other targets
7663    * we also support.
7664    */
7665
7666   if (GTK_IS_TREE_DRAG_SOURCE (model) &&
7667       gtk_tree_drag_source_drag_data_get (GTK_TREE_DRAG_SOURCE (model),
7668                                           source_row,
7669                                           selection_data))
7670     goto done;
7671
7672   /* If drag_data_get does nothing, try providing row data. */
7673   if (gtk_selection_data_get_target (selection_data) == gdk_atom_intern_static_string ("GTK_TREE_MODEL_ROW"))
7674     {
7675       gtk_tree_set_row_drag_data (selection_data,
7676                                   model,
7677                                   source_row);
7678     }
7679
7680  done:
7681   gtk_tree_path_free (source_row);
7682 }
7683
7684
7685 static void
7686 gtk_tree_view_drag_data_delete (GtkWidget      *widget,
7687                                 GdkDragContext *context)
7688 {
7689   TreeViewDragInfo *di;
7690   GtkTreeModel *model;
7691   GtkTreeView *tree_view;
7692   GtkTreePath *source_row;
7693
7694   tree_view = GTK_TREE_VIEW (widget);
7695   model = gtk_tree_view_get_model (tree_view);
7696
7697   if (!check_model_dnd (model, GTK_TYPE_TREE_DRAG_SOURCE, "drag_data_delete"))
7698     return;
7699
7700   di = get_info (tree_view);
7701
7702   if (di == NULL)
7703     return;
7704
7705   source_row = get_source_row (context);
7706
7707   if (source_row == NULL)
7708     return;
7709
7710   gtk_tree_drag_source_drag_data_delete (GTK_TREE_DRAG_SOURCE (model),
7711                                          source_row);
7712
7713   gtk_tree_path_free (source_row);
7714
7715   set_source_row (context, NULL, NULL);
7716 }
7717
7718 static void
7719 gtk_tree_view_drag_leave (GtkWidget      *widget,
7720                           GdkDragContext *context,
7721                           guint             time)
7722 {
7723   /* unset any highlight row */
7724   gtk_tree_view_set_drag_dest_row (GTK_TREE_VIEW (widget),
7725                                    NULL,
7726                                    GTK_TREE_VIEW_DROP_BEFORE);
7727
7728   remove_scroll_timeout (GTK_TREE_VIEW (widget));
7729   remove_open_timeout (GTK_TREE_VIEW (widget));
7730 }
7731
7732
7733 static gboolean
7734 gtk_tree_view_drag_motion (GtkWidget        *widget,
7735                            GdkDragContext   *context,
7736                            /* coordinates relative to the widget */
7737                            gint              x,
7738                            gint              y,
7739                            guint             time)
7740 {
7741   gboolean empty;
7742   GtkTreePath *path = NULL;
7743   GtkTreeViewDropPosition pos;
7744   GtkTreeView *tree_view;
7745   GdkDragAction suggested_action = 0;
7746   GdkAtom target;
7747
7748   tree_view = GTK_TREE_VIEW (widget);
7749
7750   if (!set_destination_row (tree_view, context, x, y, &suggested_action, &target))
7751     return FALSE;
7752
7753   gtk_tree_view_get_drag_dest_row (tree_view, &path, &pos);
7754
7755   /* we only know this *after* set_desination_row */
7756   empty = tree_view->priv->empty_view_drop;
7757
7758   if (path == NULL && !empty)
7759     {
7760       /* Can't drop here. */
7761       gdk_drag_status (context, 0, time);
7762     }
7763   else
7764     {
7765       if (tree_view->priv->open_dest_timeout == 0 &&
7766           (pos == GTK_TREE_VIEW_DROP_INTO_OR_AFTER ||
7767            pos == GTK_TREE_VIEW_DROP_INTO_OR_BEFORE))
7768         {
7769           tree_view->priv->open_dest_timeout =
7770             gdk_threads_add_timeout (AUTO_EXPAND_TIMEOUT, open_row_timeout, tree_view);
7771         }
7772       else
7773         {
7774           add_scroll_timeout (tree_view);
7775         }
7776
7777       if (target == gdk_atom_intern_static_string ("GTK_TREE_MODEL_ROW"))
7778         {
7779           /* Request data so we can use the source row when
7780            * determining whether to accept the drop
7781            */
7782           set_status_pending (context, suggested_action);
7783           gtk_drag_get_data (widget, context, target, time);
7784         }
7785       else
7786         {
7787           set_status_pending (context, 0);
7788           gdk_drag_status (context, suggested_action, time);
7789         }
7790     }
7791
7792   if (path)
7793     gtk_tree_path_free (path);
7794
7795   return TRUE;
7796 }
7797
7798
7799 static gboolean
7800 gtk_tree_view_drag_drop (GtkWidget        *widget,
7801                          GdkDragContext   *context,
7802                          /* coordinates relative to the widget */
7803                          gint              x,
7804                          gint              y,
7805                          guint             time)
7806 {
7807   GtkTreeView *tree_view;
7808   GtkTreePath *path;
7809   GdkDragAction suggested_action = 0;
7810   GdkAtom target = GDK_NONE;
7811   TreeViewDragInfo *di;
7812   GtkTreeModel *model;
7813   gboolean path_down_mode;
7814   gboolean drop_append_mode;
7815
7816   tree_view = GTK_TREE_VIEW (widget);
7817
7818   model = gtk_tree_view_get_model (tree_view);
7819
7820   remove_scroll_timeout (GTK_TREE_VIEW (widget));
7821   remove_open_timeout (GTK_TREE_VIEW (widget));
7822
7823   di = get_info (tree_view);
7824
7825   if (di == NULL)
7826     return FALSE;
7827
7828   if (!check_model_dnd (model, GTK_TYPE_TREE_DRAG_DEST, "drag_drop"))
7829     return FALSE;
7830
7831   if (!set_destination_row (tree_view, context, x, y, &suggested_action, &target))
7832     return FALSE;
7833
7834   path = get_logical_dest_row (tree_view, &path_down_mode, &drop_append_mode);
7835
7836   if (target != GDK_NONE && path != NULL)
7837     {
7838       /* in case a motion had requested drag data, change things so we
7839        * treat drag data receives as a drop.
7840        */
7841       set_status_pending (context, 0);
7842       set_dest_row (context, model, path,
7843                     path_down_mode, tree_view->priv->empty_view_drop,
7844                     drop_append_mode);
7845     }
7846
7847   if (path)
7848     gtk_tree_path_free (path);
7849
7850   /* Unset this thing */
7851   gtk_tree_view_set_drag_dest_row (GTK_TREE_VIEW (widget),
7852                                    NULL,
7853                                    GTK_TREE_VIEW_DROP_BEFORE);
7854
7855   if (target != GDK_NONE)
7856     {
7857       gtk_drag_get_data (widget, context, target, time);
7858       return TRUE;
7859     }
7860   else
7861     return FALSE;
7862 }
7863
7864 static void
7865 gtk_tree_view_drag_data_received (GtkWidget        *widget,
7866                                   GdkDragContext   *context,
7867                                   /* coordinates relative to the widget */
7868                                   gint              x,
7869                                   gint              y,
7870                                   GtkSelectionData *selection_data,
7871                                   guint             info,
7872                                   guint             time)
7873 {
7874   GtkTreePath *path;
7875   TreeViewDragInfo *di;
7876   gboolean accepted = FALSE;
7877   GtkTreeModel *model;
7878   GtkTreeView *tree_view;
7879   GtkTreePath *dest_row;
7880   GdkDragAction suggested_action;
7881   gboolean path_down_mode;
7882   gboolean drop_append_mode;
7883
7884   tree_view = GTK_TREE_VIEW (widget);
7885
7886   model = gtk_tree_view_get_model (tree_view);
7887
7888   if (!check_model_dnd (model, GTK_TYPE_TREE_DRAG_DEST, "drag_data_received"))
7889     return;
7890
7891   di = get_info (tree_view);
7892
7893   if (di == NULL)
7894     return;
7895
7896   suggested_action = get_status_pending (context);
7897
7898   if (suggested_action)
7899     {
7900       /* We are getting this data due to a request in drag_motion,
7901        * rather than due to a request in drag_drop, so we are just
7902        * supposed to call drag_status, not actually paste in the
7903        * data.
7904        */
7905       path = get_logical_dest_row (tree_view, &path_down_mode,
7906                                    &drop_append_mode);
7907
7908       if (path == NULL)
7909         suggested_action = 0;
7910       else if (path_down_mode)
7911         gtk_tree_path_down (path);
7912
7913       if (suggested_action)
7914         {
7915           if (!gtk_tree_drag_dest_row_drop_possible (GTK_TREE_DRAG_DEST (model),
7916                                                      path,
7917                                                      selection_data))
7918             {
7919               if (path_down_mode)
7920                 {
7921                   path_down_mode = FALSE;
7922                   gtk_tree_path_up (path);
7923
7924                   if (!gtk_tree_drag_dest_row_drop_possible (GTK_TREE_DRAG_DEST (model),
7925                                                              path,
7926                                                              selection_data))
7927                     suggested_action = 0;
7928                 }
7929               else
7930                 suggested_action = 0;
7931             }
7932         }
7933
7934       gdk_drag_status (context, suggested_action, time);
7935
7936       if (path)
7937         gtk_tree_path_free (path);
7938
7939       /* If you can't drop, remove user drop indicator until the next motion */
7940       if (suggested_action == 0)
7941         gtk_tree_view_set_drag_dest_row (GTK_TREE_VIEW (widget),
7942                                          NULL,
7943                                          GTK_TREE_VIEW_DROP_BEFORE);
7944
7945       return;
7946     }
7947
7948   dest_row = get_dest_row (context, &path_down_mode);
7949
7950   if (dest_row == NULL)
7951     return;
7952
7953   if (gtk_selection_data_get_length (selection_data) >= 0)
7954     {
7955       if (path_down_mode)
7956         {
7957           gtk_tree_path_down (dest_row);
7958           if (!gtk_tree_drag_dest_row_drop_possible (GTK_TREE_DRAG_DEST (model),
7959                                                      dest_row, selection_data))
7960             gtk_tree_path_up (dest_row);
7961         }
7962     }
7963
7964   if (gtk_selection_data_get_length (selection_data) >= 0)
7965     {
7966       if (gtk_tree_drag_dest_drag_data_received (GTK_TREE_DRAG_DEST (model),
7967                                                  dest_row,
7968                                                  selection_data))
7969         accepted = TRUE;
7970     }
7971
7972   gtk_drag_finish (context,
7973                    accepted,
7974                    (gdk_drag_context_get_selected_action (context) == GDK_ACTION_MOVE),
7975                    time);
7976
7977   if (gtk_tree_path_get_depth (dest_row) == 1
7978       && gtk_tree_path_get_indices (dest_row)[0] == 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_view_find_path (tree_view, 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       GtkStyleContext *context;
8468
8469       context = gtk_widget_get_style_context (widget);
8470
8471       gtk_style_context_save (context);
8472       gtk_style_context_add_class (context, GTK_STYLE_CLASS_VIEW);
8473       gtk_style_context_set_background (context, tree_view->priv->bin_window);
8474       gtk_style_context_restore (context);
8475
8476       gtk_style_context_set_background (context, tree_view->priv->header_window);
8477
8478       gtk_tree_view_set_grid_lines (tree_view, tree_view->priv->grid_lines);
8479       gtk_tree_view_set_enable_tree_lines (tree_view, tree_view->priv->tree_lines_enabled);
8480     }
8481
8482   gtk_widget_style_get (widget,
8483                         "expander-size", &tree_view->priv->expander_size,
8484                         NULL);
8485   tree_view->priv->expander_size += EXPANDER_EXTRA_PADDING;
8486
8487   for (list = tree_view->priv->columns; list; list = list->next)
8488     {
8489       column = list->data;
8490       _gtk_tree_view_column_cell_set_dirty (column, TRUE);
8491     }
8492
8493   tree_view->priv->fixed_height = -1;
8494   _gtk_rbtree_mark_invalid (tree_view->priv->tree);
8495
8496   gtk_widget_queue_resize (widget);
8497 }
8498
8499
8500 static void
8501 gtk_tree_view_set_focus_child (GtkContainer *container,
8502                                GtkWidget    *child)
8503 {
8504   GtkTreeView *tree_view = GTK_TREE_VIEW (container);
8505   GList *list;
8506
8507   for (list = tree_view->priv->columns; list; list = list->next)
8508     {
8509       if (gtk_tree_view_column_get_button (GTK_TREE_VIEW_COLUMN (list->data)) == child)
8510         {
8511           tree_view->priv->focus_column = GTK_TREE_VIEW_COLUMN (list->data);
8512           break;
8513         }
8514     }
8515
8516   GTK_CONTAINER_CLASS (gtk_tree_view_parent_class)->set_focus_child (container, child);
8517 }
8518
8519 static GtkWidgetPath *
8520 gtk_tree_view_get_path_for_child (GtkContainer *container,
8521                                   GtkWidget    *child)
8522 {
8523   GtkTreeView *tree_view = GTK_TREE_VIEW (container);
8524   GtkWidgetPath *path;
8525   gboolean rtl;
8526   GList *list;
8527   gint n_col = 0;
8528
8529   path = GTK_CONTAINER_CLASS (gtk_tree_view_parent_class)->get_path_for_child (container, child);
8530   rtl = (gtk_widget_get_direction (GTK_WIDGET (container)) == GTK_TEXT_DIR_RTL);
8531
8532   for (list = (rtl ? g_list_last (tree_view->priv->columns) : g_list_first (tree_view->priv->columns));
8533        list;
8534        list = (rtl ? list->prev : list->next))
8535     {
8536       GtkTreeViewColumn *column = list->data;
8537       GtkRegionFlags flags = 0;
8538
8539       if (!gtk_tree_view_column_get_visible (column))
8540         continue;
8541
8542       n_col++;
8543
8544       if (gtk_tree_view_column_get_widget (column) != child &&
8545           gtk_tree_view_column_get_button (column) != child)
8546         continue;
8547
8548       if ((n_col % 2) == 0)
8549         flags |= GTK_REGION_EVEN;
8550       else
8551         flags |= GTK_REGION_ODD;
8552
8553       if (n_col == 1)
8554         flags |= GTK_REGION_FIRST;
8555
8556       if ((rtl && !list->prev) ||
8557           (!rtl && !list->next))
8558         flags |= GTK_REGION_LAST;
8559
8560       gtk_widget_path_iter_add_region (path, -1, GTK_STYLE_REGION_COLUMN_HEADER, flags);
8561       break;
8562     }
8563
8564   gtk_widget_path_append_for_widget (path, child);
8565
8566   return path;
8567 }
8568
8569 static gboolean
8570 gtk_tree_view_real_move_cursor (GtkTreeView       *tree_view,
8571                                 GtkMovementStep    step,
8572                                 gint               count)
8573 {
8574   GdkModifierType state;
8575
8576   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), FALSE);
8577   g_return_val_if_fail (step == GTK_MOVEMENT_LOGICAL_POSITIONS ||
8578                         step == GTK_MOVEMENT_VISUAL_POSITIONS ||
8579                         step == GTK_MOVEMENT_DISPLAY_LINES ||
8580                         step == GTK_MOVEMENT_PAGES ||
8581                         step == GTK_MOVEMENT_BUFFER_ENDS, FALSE);
8582
8583   if (tree_view->priv->tree == NULL)
8584     return FALSE;
8585   if (!gtk_widget_has_focus (GTK_WIDGET (tree_view)))
8586     return FALSE;
8587
8588   gtk_tree_view_stop_editing (tree_view, FALSE);
8589   tree_view->priv->draw_keyfocus = TRUE;
8590   gtk_widget_grab_focus (GTK_WIDGET (tree_view));
8591
8592   if (gtk_get_current_event_state (&state))
8593     {
8594       GdkModifierType extend_mod_mask;
8595       GdkModifierType modify_mod_mask;
8596
8597       extend_mod_mask =
8598         gtk_widget_get_modifier_mask (GTK_WIDGET (tree_view),
8599                                       GDK_MODIFIER_INTENT_EXTEND_SELECTION);
8600
8601       modify_mod_mask =
8602         gtk_widget_get_modifier_mask (GTK_WIDGET (tree_view),
8603                                       GDK_MODIFIER_INTENT_MODIFY_SELECTION);
8604
8605       if ((state & modify_mod_mask) == modify_mod_mask)
8606         tree_view->priv->modify_selection_pressed = TRUE;
8607       if ((state & extend_mod_mask) == extend_mod_mask)
8608         tree_view->priv->extend_selection_pressed = TRUE;
8609     }
8610   /* else we assume not pressed */
8611
8612   switch (step)
8613     {
8614       /* currently we make no distinction.  When we go bi-di, we need to */
8615     case GTK_MOVEMENT_LOGICAL_POSITIONS:
8616     case GTK_MOVEMENT_VISUAL_POSITIONS:
8617       gtk_tree_view_move_cursor_left_right (tree_view, count);
8618       break;
8619     case GTK_MOVEMENT_DISPLAY_LINES:
8620       gtk_tree_view_move_cursor_up_down (tree_view, count);
8621       break;
8622     case GTK_MOVEMENT_PAGES:
8623       gtk_tree_view_move_cursor_page_up_down (tree_view, count);
8624       break;
8625     case GTK_MOVEMENT_BUFFER_ENDS:
8626       gtk_tree_view_move_cursor_start_end (tree_view, count);
8627       break;
8628     default:
8629       g_assert_not_reached ();
8630     }
8631
8632   tree_view->priv->modify_selection_pressed = FALSE;
8633   tree_view->priv->extend_selection_pressed = FALSE;
8634
8635   return TRUE;
8636 }
8637
8638 static void
8639 gtk_tree_view_put (GtkTreeView *tree_view,
8640                    GtkWidget   *child_widget,
8641                    /* in bin_window coordinates */
8642                    gint         x,
8643                    gint         y,
8644                    gint         width,
8645                    gint         height)
8646 {
8647   GtkTreeViewChild *child;
8648
8649   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
8650   g_return_if_fail (GTK_IS_WIDGET (child_widget));
8651
8652   child = g_slice_new (GtkTreeViewChild);
8653
8654   child->widget = child_widget;
8655   child->x = x;
8656   child->y = y;
8657   child->width = width;
8658   child->height = height;
8659
8660   tree_view->priv->children = g_list_append (tree_view->priv->children, child);
8661
8662   if (gtk_widget_get_realized (GTK_WIDGET (tree_view)))
8663     gtk_widget_set_parent_window (child->widget, tree_view->priv->bin_window);
8664
8665   gtk_widget_set_parent (child_widget, GTK_WIDGET (tree_view));
8666 }
8667
8668 void
8669 _gtk_tree_view_child_move_resize (GtkTreeView *tree_view,
8670                                   GtkWidget   *widget,
8671                                   /* in tree coordinates */
8672                                   gint         x,
8673                                   gint         y,
8674                                   gint         width,
8675                                   gint         height)
8676 {
8677   GtkTreeViewChild *child = NULL;
8678   GList *list;
8679   GdkRectangle allocation;
8680
8681   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
8682   g_return_if_fail (GTK_IS_WIDGET (widget));
8683
8684   for (list = tree_view->priv->children; list; list = list->next)
8685     {
8686       if (((GtkTreeViewChild *)list->data)->widget == widget)
8687         {
8688           child = list->data;
8689           break;
8690         }
8691     }
8692   if (child == NULL)
8693     return;
8694
8695   allocation.x = child->x = x;
8696   allocation.y = child->y = y;
8697   allocation.width = child->width = width;
8698   allocation.height = child->height = height;
8699
8700   if (gtk_widget_get_realized (widget))
8701     gtk_widget_size_allocate (widget, &allocation);
8702 }
8703
8704
8705 /* TreeModel Callbacks
8706  */
8707
8708 static void
8709 gtk_tree_view_row_changed (GtkTreeModel *model,
8710                            GtkTreePath  *path,
8711                            GtkTreeIter  *iter,
8712                            gpointer      data)
8713 {
8714   GtkTreeView *tree_view = (GtkTreeView *)data;
8715   GtkRBTree *tree;
8716   GtkRBNode *node;
8717   gboolean free_path = FALSE;
8718   GList *list;
8719   GtkTreePath *cursor_path;
8720
8721   g_return_if_fail (path != NULL || iter != NULL);
8722
8723   if (tree_view->priv->cursor != NULL)
8724     cursor_path = gtk_tree_row_reference_get_path (tree_view->priv->cursor);
8725   else
8726     cursor_path = NULL;
8727
8728   if (tree_view->priv->edited_column &&
8729       (cursor_path == NULL || gtk_tree_path_compare (cursor_path, path) == 0))
8730     gtk_tree_view_stop_editing (tree_view, TRUE);
8731
8732   if (cursor_path != NULL)
8733     gtk_tree_path_free (cursor_path);
8734
8735   if (path == NULL)
8736     {
8737       path = gtk_tree_model_get_path (model, iter);
8738       free_path = TRUE;
8739     }
8740   else if (iter == NULL)
8741     gtk_tree_model_get_iter (model, iter, path);
8742
8743   if (_gtk_tree_view_find_node (tree_view,
8744                                 path,
8745                                 &tree,
8746                                 &node))
8747     /* We aren't actually showing the node */
8748     goto done;
8749
8750   if (tree == NULL)
8751     goto done;
8752
8753   if (tree_view->priv->fixed_height_mode
8754       && tree_view->priv->fixed_height >= 0)
8755     {
8756       _gtk_rbtree_node_set_height (tree, node, tree_view->priv->fixed_height);
8757       if (gtk_widget_get_realized (GTK_WIDGET (tree_view)))
8758         gtk_tree_view_node_queue_redraw (tree_view, tree, node);
8759     }
8760   else
8761     {
8762       _gtk_rbtree_node_mark_invalid (tree, node);
8763       for (list = tree_view->priv->columns; list; list = list->next)
8764         {
8765           GtkTreeViewColumn *column;
8766
8767           column = list->data;
8768           if (!gtk_tree_view_column_get_visible (column))
8769             continue;
8770
8771           if (gtk_tree_view_column_get_sizing (column) == GTK_TREE_VIEW_COLUMN_AUTOSIZE)
8772             {
8773               _gtk_tree_view_column_cell_set_dirty (column, TRUE);
8774             }
8775         }
8776     }
8777
8778  done:
8779   if (!tree_view->priv->fixed_height_mode &&
8780       gtk_widget_get_realized (GTK_WIDGET (tree_view)))
8781     install_presize_handler (tree_view);
8782   if (free_path)
8783     gtk_tree_path_free (path);
8784 }
8785
8786 static void
8787 gtk_tree_view_row_inserted (GtkTreeModel *model,
8788                             GtkTreePath  *path,
8789                             GtkTreeIter  *iter,
8790                             gpointer      data)
8791 {
8792   GtkTreeView *tree_view = (GtkTreeView *) data;
8793   gint *indices;
8794   GtkRBTree *tree;
8795   GtkRBNode *tmpnode = NULL;
8796   gint depth;
8797   gint i = 0;
8798   gint height;
8799   gboolean free_path = FALSE;
8800   gboolean node_visible = TRUE;
8801
8802   g_return_if_fail (path != NULL || iter != NULL);
8803
8804   if (tree_view->priv->fixed_height_mode
8805       && tree_view->priv->fixed_height >= 0)
8806     height = tree_view->priv->fixed_height;
8807   else
8808     height = 0;
8809
8810   if (path == NULL)
8811     {
8812       path = gtk_tree_model_get_path (model, iter);
8813       free_path = TRUE;
8814     }
8815   else if (iter == NULL)
8816     gtk_tree_model_get_iter (model, iter, path);
8817
8818   if (tree_view->priv->tree == NULL)
8819     tree_view->priv->tree = _gtk_rbtree_new ();
8820
8821   tree = tree_view->priv->tree;
8822
8823   /* Update all row-references */
8824   gtk_tree_row_reference_inserted (G_OBJECT (data), path);
8825   depth = gtk_tree_path_get_depth (path);
8826   indices = gtk_tree_path_get_indices (path);
8827
8828   /* First, find the parent tree */
8829   while (i < depth - 1)
8830     {
8831       if (tree == NULL)
8832         {
8833           /* We aren't showing the node */
8834           node_visible = FALSE;
8835           goto done;
8836         }
8837
8838       tmpnode = _gtk_rbtree_find_count (tree, indices[i] + 1);
8839       if (tmpnode == NULL)
8840         {
8841           g_warning ("A node was inserted with a parent that's not in the tree.\n" \
8842                      "This possibly means that a GtkTreeModel inserted a child node\n" \
8843                      "before the parent was inserted.");
8844           goto done;
8845         }
8846       else if (!GTK_RBNODE_FLAG_SET (tmpnode, GTK_RBNODE_IS_PARENT))
8847         {
8848           /* FIXME enforce correct behavior on model, probably */
8849           /* In theory, the model should have emitted has_child_toggled here.  We
8850            * try to catch it anyway, just to be safe, in case the model hasn't.
8851            */
8852           GtkTreePath *tmppath = _gtk_tree_view_find_path (tree_view,
8853                                                            tree,
8854                                                            tmpnode);
8855           gtk_tree_view_row_has_child_toggled (model, tmppath, NULL, data);
8856           gtk_tree_path_free (tmppath);
8857           goto done;
8858         }
8859
8860       tree = tmpnode->children;
8861       i++;
8862     }
8863
8864   if (tree == NULL)
8865     {
8866       node_visible = FALSE;
8867       goto done;
8868     }
8869
8870   /* ref the node */
8871   gtk_tree_model_ref_node (tree_view->priv->model, iter);
8872   if (indices[depth - 1] == 0)
8873     {
8874       tmpnode = _gtk_rbtree_find_count (tree, 1);
8875       tmpnode = _gtk_rbtree_insert_before (tree, tmpnode, height, FALSE);
8876     }
8877   else
8878     {
8879       tmpnode = _gtk_rbtree_find_count (tree, indices[depth - 1]);
8880       tmpnode = _gtk_rbtree_insert_after (tree, tmpnode, height, FALSE);
8881     }
8882
8883  done:
8884   if (height > 0)
8885     {
8886       if (tree)
8887         _gtk_rbtree_node_mark_valid (tree, tmpnode);
8888
8889       if (node_visible && node_is_visible (tree_view, tree, tmpnode))
8890         gtk_widget_queue_resize (GTK_WIDGET (tree_view));
8891       else
8892         gtk_widget_queue_resize_no_redraw (GTK_WIDGET (tree_view));
8893     }
8894   else
8895     install_presize_handler (tree_view);
8896   if (free_path)
8897     gtk_tree_path_free (path);
8898 }
8899
8900 static void
8901 gtk_tree_view_row_has_child_toggled (GtkTreeModel *model,
8902                                      GtkTreePath  *path,
8903                                      GtkTreeIter  *iter,
8904                                      gpointer      data)
8905 {
8906   GtkTreeView *tree_view = (GtkTreeView *)data;
8907   GtkTreeIter real_iter;
8908   gboolean has_child;
8909   GtkRBTree *tree;
8910   GtkRBNode *node;
8911   gboolean free_path = FALSE;
8912
8913   g_return_if_fail (path != NULL || iter != NULL);
8914
8915   if (iter)
8916     real_iter = *iter;
8917
8918   if (path == NULL)
8919     {
8920       path = gtk_tree_model_get_path (model, iter);
8921       free_path = TRUE;
8922     }
8923   else if (iter == NULL)
8924     gtk_tree_model_get_iter (model, &real_iter, path);
8925
8926   if (_gtk_tree_view_find_node (tree_view,
8927                                 path,
8928                                 &tree,
8929                                 &node))
8930     /* We aren't actually showing the node */
8931     goto done;
8932
8933   if (tree == NULL)
8934     goto done;
8935
8936   has_child = gtk_tree_model_iter_has_child (model, &real_iter);
8937   /* Sanity check.
8938    */
8939   if (GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_PARENT) == has_child)
8940     goto done;
8941
8942   if (has_child)
8943     GTK_RBNODE_SET_FLAG (node, GTK_RBNODE_IS_PARENT);
8944   else
8945     GTK_RBNODE_UNSET_FLAG (node, GTK_RBNODE_IS_PARENT);
8946
8947   if (has_child && tree_view->priv->is_list)
8948     {
8949       tree_view->priv->is_list = FALSE;
8950       if (tree_view->priv->show_expanders)
8951         {
8952           GList *list;
8953
8954           for (list = tree_view->priv->columns; list; list = list->next)
8955             if (gtk_tree_view_column_get_visible (GTK_TREE_VIEW_COLUMN (list->data)))
8956               {
8957                 _gtk_tree_view_column_cell_set_dirty (GTK_TREE_VIEW_COLUMN (list->data), TRUE);
8958                 break;
8959               }
8960         }
8961       gtk_widget_queue_resize (GTK_WIDGET (tree_view));
8962     }
8963   else
8964     {
8965       _gtk_tree_view_queue_draw_node (tree_view, tree, node, NULL);
8966     }
8967
8968  done:
8969   if (free_path)
8970     gtk_tree_path_free (path);
8971 }
8972
8973 static void
8974 count_children_helper (GtkRBTree *tree,
8975                        GtkRBNode *node,
8976                        gpointer   data)
8977 {
8978   if (node->children)
8979     _gtk_rbtree_traverse (node->children, node->children->root, G_POST_ORDER, count_children_helper, data);
8980   (*((gint *)data))++;
8981 }
8982
8983 static void
8984 check_selection_helper (GtkRBTree *tree,
8985                         GtkRBNode *node,
8986                         gpointer   data)
8987 {
8988   gint *value = (gint *)data;
8989
8990   *value = GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_SELECTED);
8991
8992   if (node->children && !*value)
8993     _gtk_rbtree_traverse (node->children, node->children->root, G_POST_ORDER, check_selection_helper, data);
8994 }
8995
8996 static void
8997 gtk_tree_view_row_deleted (GtkTreeModel *model,
8998                            GtkTreePath  *path,
8999                            gpointer      data)
9000 {
9001   GtkTreeView *tree_view = (GtkTreeView *)data;
9002   GtkRBTree *tree;
9003   GtkRBNode *node;
9004   GList *list;
9005   gint selection_changed = FALSE;
9006   GtkStyleContext *context;
9007
9008   g_return_if_fail (path != NULL);
9009
9010   gtk_tree_row_reference_deleted (G_OBJECT (data), path);
9011
9012   if (_gtk_tree_view_find_node (tree_view, path, &tree, &node))
9013     return;
9014
9015   if (tree == NULL)
9016     return;
9017
9018   /* check if the selection has been changed */
9019   _gtk_rbtree_traverse (tree, node, G_POST_ORDER,
9020                         check_selection_helper, &selection_changed);
9021
9022   for (list = tree_view->priv->columns; list; list = list->next)
9023     if (gtk_tree_view_column_get_visible (GTK_TREE_VIEW_COLUMN (list->data)) &&
9024         gtk_tree_view_column_get_sizing (GTK_TREE_VIEW_COLUMN (list->data)) == GTK_TREE_VIEW_COLUMN_AUTOSIZE)
9025       _gtk_tree_view_column_cell_set_dirty ((GtkTreeViewColumn *)list->data, TRUE);
9026
9027   /* Ensure we don't have a dangling pointer to a dead node */
9028   ensure_unprelighted (tree_view);
9029
9030   /* Cancel editting if we've started */
9031   gtk_tree_view_stop_editing (tree_view, TRUE);
9032
9033   if (tree_view->priv->destroy_count_func)
9034     {
9035       gint child_count = 0;
9036       if (node->children)
9037         _gtk_rbtree_traverse (node->children, node->children->root, G_POST_ORDER, count_children_helper, &child_count);
9038       tree_view->priv->destroy_count_func (tree_view, path, child_count, tree_view->priv->destroy_count_data);
9039     }
9040
9041   if (tree->root->count == 1)
9042     {
9043       if (tree_view->priv->tree == tree)
9044         tree_view->priv->tree = NULL;
9045
9046       _gtk_tree_view_accessible_remove (tree_view, tree, NULL);
9047       _gtk_rbtree_remove (tree);
9048     }
9049   else
9050     {
9051       _gtk_tree_view_accessible_remove (tree_view, tree, node);
9052       _gtk_rbtree_remove_node (tree, node);
9053     }
9054
9055   if (! gtk_tree_row_reference_valid (tree_view->priv->top_row))
9056     {
9057       gtk_tree_row_reference_free (tree_view->priv->top_row);
9058       tree_view->priv->top_row = NULL;
9059     }
9060
9061   /* Cancel any ongoing animation happening within the row */
9062   context = gtk_widget_get_style_context (GTK_WIDGET (tree_view));
9063   gtk_style_context_cancel_animations (context, node);
9064
9065   install_scroll_sync_handler (tree_view);
9066
9067   gtk_widget_queue_resize (GTK_WIDGET (tree_view));
9068
9069   if (selection_changed)
9070     g_signal_emit_by_name (tree_view->priv->selection, "changed");
9071 }
9072
9073 static void
9074 gtk_tree_view_rows_reordered (GtkTreeModel *model,
9075                               GtkTreePath  *parent,
9076                               GtkTreeIter  *iter,
9077                               gint         *new_order,
9078                               gpointer      data)
9079 {
9080   GtkTreeView *tree_view = GTK_TREE_VIEW (data);
9081   GtkRBTree *tree;
9082   GtkRBNode *node;
9083   gint len;
9084
9085   len = gtk_tree_model_iter_n_children (model, iter);
9086
9087   if (len < 2)
9088     return;
9089
9090   gtk_tree_row_reference_reordered (G_OBJECT (data),
9091                                     parent,
9092                                     iter,
9093                                     new_order);
9094
9095   if (_gtk_tree_view_find_node (tree_view,
9096                                 parent,
9097                                 &tree,
9098                                 &node))
9099     return;
9100
9101   /* We need to special case the parent path */
9102   if (tree == NULL)
9103     tree = tree_view->priv->tree;
9104   else
9105     tree = node->children;
9106
9107   if (tree == NULL)
9108     return;
9109
9110   if (tree_view->priv->edited_column)
9111     gtk_tree_view_stop_editing (tree_view, TRUE);
9112
9113   /* we need to be unprelighted */
9114   ensure_unprelighted (tree_view);
9115
9116   _gtk_rbtree_reorder (tree, new_order, len);
9117
9118   gtk_widget_queue_draw (GTK_WIDGET (tree_view));
9119
9120   gtk_tree_view_dy_to_top_row (tree_view);
9121 }
9122
9123
9124 /* Internal tree functions
9125  */
9126
9127
9128 static void
9129 gtk_tree_view_get_background_xrange (GtkTreeView       *tree_view,
9130                                      GtkRBTree         *tree,
9131                                      GtkTreeViewColumn *column,
9132                                      gint              *x1,
9133                                      gint              *x2)
9134 {
9135   GtkTreeViewColumn *tmp_column = NULL;
9136   gint total_width;
9137   GList *list;
9138   gboolean rtl;
9139
9140   if (x1)
9141     *x1 = 0;
9142
9143   if (x2)
9144     *x2 = 0;
9145
9146   rtl = (gtk_widget_get_direction (GTK_WIDGET (tree_view)) == GTK_TEXT_DIR_RTL);
9147
9148   total_width = 0;
9149   for (list = (rtl ? g_list_last (tree_view->priv->columns) : g_list_first (tree_view->priv->columns));
9150        list;
9151        list = (rtl ? list->prev : list->next))
9152     {
9153       tmp_column = list->data;
9154
9155       if (tmp_column == column)
9156         break;
9157
9158       if (gtk_tree_view_column_get_visible (tmp_column))
9159         total_width += gtk_tree_view_column_get_width (tmp_column);
9160     }
9161
9162   if (tmp_column != column)
9163     {
9164       g_warning (G_STRLOC": passed-in column isn't in the tree");
9165       return;
9166     }
9167
9168   if (x1)
9169     *x1 = total_width;
9170
9171   if (x2)
9172     {
9173       if (gtk_tree_view_column_get_visible (column))
9174         *x2 = total_width + gtk_tree_view_column_get_width (column);
9175       else
9176         *x2 = total_width; /* width of 0 */
9177     }
9178 }
9179
9180 static void
9181 gtk_tree_view_get_arrow_xrange (GtkTreeView *tree_view,
9182                                 GtkRBTree   *tree,
9183                                 gint        *x1,
9184                                 gint        *x2)
9185 {
9186   gint x_offset = 0;
9187   GList *list;
9188   GtkTreeViewColumn *tmp_column = NULL;
9189   gint total_width;
9190   gboolean indent_expanders;
9191   gboolean rtl;
9192
9193   rtl = (gtk_widget_get_direction (GTK_WIDGET (tree_view)) == GTK_TEXT_DIR_RTL);
9194
9195   total_width = 0;
9196   for (list = (rtl ? g_list_last (tree_view->priv->columns) : g_list_first (tree_view->priv->columns));
9197        list;
9198        list = (rtl ? list->prev : list->next))
9199     {
9200       tmp_column = list->data;
9201
9202       if (gtk_tree_view_is_expander_column (tree_view, tmp_column))
9203         {
9204           if (rtl)
9205             x_offset = total_width + gtk_tree_view_column_get_width (tmp_column) - tree_view->priv->expander_size;
9206           else
9207             x_offset = total_width;
9208           break;
9209         }
9210
9211       if (gtk_tree_view_column_get_visible (tmp_column))
9212         total_width += gtk_tree_view_column_get_width (tmp_column);
9213     }
9214
9215   gtk_widget_style_get (GTK_WIDGET (tree_view),
9216                         "indent-expanders", &indent_expanders,
9217                         NULL);
9218
9219   if (indent_expanders)
9220     {
9221       if (rtl)
9222         x_offset -= tree_view->priv->expander_size * _gtk_rbtree_get_depth (tree);
9223       else
9224         x_offset += tree_view->priv->expander_size * _gtk_rbtree_get_depth (tree);
9225     }
9226
9227   *x1 = x_offset;
9228
9229   if (tmp_column &&
9230       gtk_tree_view_column_get_visible (tmp_column))
9231     /* +1 because x2 isn't included in the range. */
9232     *x2 = *x1 + tree_view->priv->expander_size + 1;
9233   else
9234     *x2 = *x1;
9235 }
9236
9237 static void
9238 gtk_tree_view_build_tree (GtkTreeView *tree_view,
9239                           GtkRBTree   *tree,
9240                           GtkTreeIter *iter,
9241                           gint         depth,
9242                           gboolean     recurse)
9243 {
9244   GtkRBNode *temp = NULL;
9245   GtkTreePath *path = NULL;
9246
9247   do
9248     {
9249       gtk_tree_model_ref_node (tree_view->priv->model, iter);
9250       temp = _gtk_rbtree_insert_after (tree, temp, 0, FALSE);
9251
9252       if (tree_view->priv->fixed_height > 0)
9253         {
9254           if (GTK_RBNODE_FLAG_SET (temp, GTK_RBNODE_INVALID))
9255             {
9256               _gtk_rbtree_node_set_height (tree, temp, tree_view->priv->fixed_height);
9257               _gtk_rbtree_node_mark_valid (tree, temp);
9258             }
9259         }
9260
9261       if (tree_view->priv->is_list)
9262         continue;
9263
9264       if (recurse)
9265         {
9266           GtkTreeIter child;
9267
9268           if (!path)
9269             path = gtk_tree_model_get_path (tree_view->priv->model, iter);
9270           else
9271             gtk_tree_path_next (path);
9272
9273           if (gtk_tree_model_iter_children (tree_view->priv->model, &child, iter))
9274             {
9275               gboolean expand;
9276
9277               g_signal_emit (tree_view, tree_view_signals[TEST_EXPAND_ROW], 0, iter, path, &expand);
9278
9279               if (gtk_tree_model_iter_has_child (tree_view->priv->model, iter)
9280                   && !expand)
9281                 {
9282                   temp->children = _gtk_rbtree_new ();
9283                   temp->children->parent_tree = tree;
9284                   temp->children->parent_node = temp;
9285                   gtk_tree_view_build_tree (tree_view, temp->children, &child, depth + 1, recurse);
9286                 }
9287             }
9288         }
9289
9290       if (gtk_tree_model_iter_has_child (tree_view->priv->model, iter))
9291         {
9292           if ((temp->flags&GTK_RBNODE_IS_PARENT) != GTK_RBNODE_IS_PARENT)
9293             temp->flags ^= GTK_RBNODE_IS_PARENT;
9294         }
9295     }
9296   while (gtk_tree_model_iter_next (tree_view->priv->model, iter));
9297
9298   if (path)
9299     gtk_tree_path_free (path);
9300 }
9301
9302 /* Make sure the node is visible vertically */
9303 static void
9304 gtk_tree_view_clamp_node_visible (GtkTreeView *tree_view,
9305                                   GtkRBTree   *tree,
9306                                   GtkRBNode   *node)
9307 {
9308   gint node_dy, height;
9309   GtkTreePath *path = NULL;
9310
9311   if (!gtk_widget_get_realized (GTK_WIDGET (tree_view)))
9312     return;
9313
9314   /* just return if the node is visible, avoiding a costly expose */
9315   node_dy = _gtk_rbtree_node_find_offset (tree, node);
9316   height = gtk_tree_view_get_row_height (tree_view, node);
9317   if (! GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_INVALID)
9318       && node_dy >= gtk_adjustment_get_value (tree_view->priv->vadjustment)
9319       && node_dy + height <= (gtk_adjustment_get_value (tree_view->priv->vadjustment)
9320                               + gtk_adjustment_get_page_size (tree_view->priv->vadjustment)))
9321     return;
9322
9323   path = _gtk_tree_view_find_path (tree_view, tree, node);
9324   if (path)
9325     {
9326       /* We process updates because we want to clear old selected items when we scroll.
9327        * if this is removed, we get a "selection streak" at the bottom. */
9328       gtk_tree_view_bin_process_updates (tree_view);
9329
9330       gtk_tree_view_scroll_to_cell (tree_view, path, NULL, FALSE, 0.0, 0.0);
9331       gtk_tree_path_free (path);
9332     }
9333 }
9334
9335 static void
9336 gtk_tree_view_clamp_column_visible (GtkTreeView       *tree_view,
9337                                     GtkTreeViewColumn *column,
9338                                     gboolean           focus_to_cell)
9339 {
9340   GtkAllocation allocation;
9341   gint x, width;
9342
9343   if (column == NULL)
9344     return;
9345
9346   gtk_widget_get_allocation (gtk_tree_view_column_get_button (column), &allocation);
9347   x = allocation.x;
9348   width = allocation.width;
9349
9350   if (width > gtk_adjustment_get_page_size (tree_view->priv->hadjustment))
9351     {
9352       /* The column is larger than the horizontal page size.  If the
9353        * column has cells which can be focussed individually, then we make
9354        * sure the cell which gets focus is fully visible (if even the
9355        * focus cell is bigger than the page size, we make sure the
9356        * left-hand side of the cell is visible).
9357        *
9358        * If the column does not have an activatable cell, we
9359        * make sure the left-hand side of the column is visible.
9360        */
9361
9362       if (focus_to_cell && gtk_tree_view_has_can_focus_cell (tree_view))
9363         {
9364           GtkCellArea *cell_area;
9365           GtkCellRenderer *focus_cell;
9366
9367           cell_area = gtk_cell_layout_get_area (GTK_CELL_LAYOUT (column));
9368           focus_cell = gtk_cell_area_get_focus_cell (cell_area);
9369
9370           if (gtk_tree_view_column_cell_get_position (column, focus_cell,
9371                                                       &x, &width))
9372             {
9373               if (width < gtk_adjustment_get_page_size (tree_view->priv->hadjustment))
9374                 {
9375                   if (gtk_adjustment_get_value (tree_view->priv->hadjustment) + gtk_adjustment_get_page_size (tree_view->priv->hadjustment) < x + width)
9376                     gtk_adjustment_set_value (tree_view->priv->hadjustment,
9377                                               x + width - gtk_adjustment_get_page_size (tree_view->priv->hadjustment));
9378                   else if (gtk_adjustment_get_value (tree_view->priv->hadjustment) > x)
9379                     gtk_adjustment_set_value (tree_view->priv->hadjustment, x);
9380                 }
9381             }
9382         }
9383
9384       gtk_adjustment_set_value (tree_view->priv->hadjustment, x);
9385     }
9386   else
9387     {
9388       if ((gtk_adjustment_get_value (tree_view->priv->hadjustment) + gtk_adjustment_get_page_size (tree_view->priv->hadjustment)) < (x + width))
9389           gtk_adjustment_set_value (tree_view->priv->hadjustment,
9390                                     x + width - gtk_adjustment_get_page_size (tree_view->priv->hadjustment));
9391       else if (gtk_adjustment_get_value (tree_view->priv->hadjustment) > x)
9392         gtk_adjustment_set_value (tree_view->priv->hadjustment, x);
9393   }
9394 }
9395
9396 /* This function could be more efficient.  I'll optimize it if profiling seems
9397  * to imply that it is important */
9398 GtkTreePath *
9399 _gtk_tree_view_find_path (GtkTreeView *tree_view,
9400                           GtkRBTree   *tree,
9401                           GtkRBNode   *node)
9402 {
9403   GtkTreePath *path;
9404   GtkRBTree *tmp_tree;
9405   GtkRBNode *tmp_node, *last;
9406   gint count;
9407
9408   path = gtk_tree_path_new ();
9409
9410   g_return_val_if_fail (node != NULL, path);
9411   g_return_val_if_fail (node != tree->nil, path);
9412
9413   count = 1 + node->left->count;
9414
9415   last = node;
9416   tmp_node = node->parent;
9417   tmp_tree = tree;
9418   while (tmp_tree)
9419     {
9420       while (tmp_node != tmp_tree->nil)
9421         {
9422           if (tmp_node->right == last)
9423             count += 1 + tmp_node->left->count;
9424           last = tmp_node;
9425           tmp_node = tmp_node->parent;
9426         }
9427       gtk_tree_path_prepend_index (path, count - 1);
9428       last = tmp_tree->parent_node;
9429       tmp_tree = tmp_tree->parent_tree;
9430       if (last)
9431         {
9432           count = 1 + last->left->count;
9433           tmp_node = last->parent;
9434         }
9435     }
9436   return path;
9437 }
9438
9439 /* Returns TRUE if we ran out of tree before finding the path.  If the path is
9440  * invalid (ie. points to a node that's not in the tree), *tree and *node are
9441  * both set to NULL.
9442  */
9443 gboolean
9444 _gtk_tree_view_find_node (GtkTreeView  *tree_view,
9445                           GtkTreePath  *path,
9446                           GtkRBTree   **tree,
9447                           GtkRBNode   **node)
9448 {
9449   GtkRBNode *tmpnode = NULL;
9450   GtkRBTree *tmptree = tree_view->priv->tree;
9451   gint *indices = gtk_tree_path_get_indices (path);
9452   gint depth = gtk_tree_path_get_depth (path);
9453   gint i = 0;
9454
9455   *node = NULL;
9456   *tree = NULL;
9457
9458   if (depth == 0 || tmptree == NULL)
9459     return FALSE;
9460   do
9461     {
9462       tmpnode = _gtk_rbtree_find_count (tmptree, indices[i] + 1);
9463       ++i;
9464       if (tmpnode == NULL)
9465         {
9466           *tree = NULL;
9467           *node = NULL;
9468           return FALSE;
9469         }
9470       if (i >= depth)
9471         {
9472           *tree = tmptree;
9473           *node = tmpnode;
9474           return FALSE;
9475         }
9476       *tree = tmptree;
9477       *node = tmpnode;
9478       tmptree = tmpnode->children;
9479       if (tmptree == NULL)
9480         return TRUE;
9481     }
9482   while (1);
9483 }
9484
9485 static gboolean
9486 gtk_tree_view_is_expander_column (GtkTreeView       *tree_view,
9487                                   GtkTreeViewColumn *column)
9488 {
9489   GList *list;
9490
9491   if (tree_view->priv->is_list)
9492     return FALSE;
9493
9494   if (tree_view->priv->expander_column != NULL)
9495     {
9496       if (tree_view->priv->expander_column == column)
9497         return TRUE;
9498       return FALSE;
9499     }
9500   else
9501     {
9502       for (list = tree_view->priv->columns;
9503            list;
9504            list = list->next)
9505         if (gtk_tree_view_column_get_visible (GTK_TREE_VIEW_COLUMN (list->data)))
9506           break;
9507       if (list && list->data == column)
9508         return TRUE;
9509     }
9510   return FALSE;
9511 }
9512
9513 static inline gboolean
9514 gtk_tree_view_draw_expanders (GtkTreeView *tree_view)
9515 {
9516   if (!tree_view->priv->is_list && tree_view->priv->show_expanders)
9517     return TRUE;
9518   /* else */
9519   return FALSE;
9520 }
9521
9522 static void
9523 gtk_tree_view_add_move_binding (GtkBindingSet  *binding_set,
9524                                 guint           keyval,
9525                                 guint           modmask,
9526                                 gboolean        add_shifted_binding,
9527                                 GtkMovementStep step,
9528                                 gint            count)
9529 {
9530
9531   gtk_binding_entry_add_signal (binding_set, keyval, modmask,
9532                                 "move-cursor", 2,
9533                                 G_TYPE_ENUM, step,
9534                                 G_TYPE_INT, count);
9535
9536   if (add_shifted_binding)
9537     gtk_binding_entry_add_signal (binding_set, keyval, GDK_SHIFT_MASK,
9538                                   "move-cursor", 2,
9539                                   G_TYPE_ENUM, step,
9540                                   G_TYPE_INT, count);
9541
9542   if ((modmask & GDK_CONTROL_MASK) == GDK_CONTROL_MASK)
9543    return;
9544
9545   gtk_binding_entry_add_signal (binding_set, keyval, GDK_CONTROL_MASK | GDK_SHIFT_MASK,
9546                                 "move-cursor", 2,
9547                                 G_TYPE_ENUM, step,
9548                                 G_TYPE_INT, count);
9549
9550   gtk_binding_entry_add_signal (binding_set, keyval, GDK_CONTROL_MASK,
9551                                 "move-cursor", 2,
9552                                 G_TYPE_ENUM, step,
9553                                 G_TYPE_INT, count);
9554 }
9555
9556 static gint
9557 gtk_tree_view_unref_tree_helper (GtkTreeModel *model,
9558                                  GtkTreeIter  *iter,
9559                                  GtkRBTree    *tree,
9560                                  GtkRBNode    *node)
9561 {
9562   gint retval = FALSE;
9563   do
9564     {
9565       g_return_val_if_fail (node != NULL, FALSE);
9566
9567       if (node->children)
9568         {
9569           GtkTreeIter child;
9570           GtkRBTree *new_tree;
9571           GtkRBNode *new_node;
9572
9573           new_tree = node->children;
9574           new_node = new_tree->root;
9575
9576           while (new_node && new_node->left != new_tree->nil)
9577             new_node = new_node->left;
9578
9579           if (!gtk_tree_model_iter_children (model, &child, iter))
9580             return FALSE;
9581
9582           retval = retval || gtk_tree_view_unref_tree_helper (model, &child, new_tree, new_node);
9583         }
9584
9585       if (GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_SELECTED))
9586         retval = TRUE;
9587       gtk_tree_model_unref_node (model, iter);
9588       node = _gtk_rbtree_next (tree, node);
9589     }
9590   while (gtk_tree_model_iter_next (model, iter));
9591
9592   return retval;
9593 }
9594
9595 static gint
9596 gtk_tree_view_unref_and_check_selection_tree (GtkTreeView *tree_view,
9597                                               GtkRBTree   *tree)
9598 {
9599   GtkTreeIter iter;
9600   GtkTreePath *path;
9601   GtkRBNode *node;
9602   gint retval;
9603
9604   if (!tree)
9605     return FALSE;
9606
9607   node = tree->root;
9608   while (node && node->left != tree->nil)
9609     node = node->left;
9610
9611   g_return_val_if_fail (node != NULL, FALSE);
9612   path = _gtk_tree_view_find_path (tree_view, tree, node);
9613   gtk_tree_model_get_iter (GTK_TREE_MODEL (tree_view->priv->model),
9614                            &iter, path);
9615   retval = gtk_tree_view_unref_tree_helper (GTK_TREE_MODEL (tree_view->priv->model), &iter, tree, node);
9616   gtk_tree_path_free (path);
9617
9618   return retval;
9619 }
9620
9621 static void
9622 gtk_tree_view_set_column_drag_info (GtkTreeView       *tree_view,
9623                                     GtkTreeViewColumn *column)
9624 {
9625   GtkTreeViewColumn *left_column;
9626   GtkTreeViewColumn *cur_column = NULL;
9627   GtkTreeViewColumnReorder *reorder;
9628   gboolean rtl;
9629   GList *tmp_list;
9630   gint left;
9631
9632   /* We want to precalculate the motion list such that we know what column slots
9633    * are available.
9634    */
9635   left_column = NULL;
9636   rtl = (gtk_widget_get_direction (GTK_WIDGET (tree_view)) == GTK_TEXT_DIR_RTL);
9637
9638   /* First, identify all possible drop spots */
9639   if (rtl)
9640     tmp_list = g_list_last (tree_view->priv->columns);
9641   else
9642     tmp_list = g_list_first (tree_view->priv->columns);
9643
9644   while (tmp_list)
9645     {
9646       cur_column = GTK_TREE_VIEW_COLUMN (tmp_list->data);
9647       tmp_list = rtl?g_list_previous (tmp_list):g_list_next (tmp_list);
9648
9649       if (gtk_tree_view_column_get_visible (cur_column) == FALSE)
9650         continue;
9651
9652       /* If it's not the column moving and func tells us to skip over the column, we continue. */
9653       if (left_column != column && cur_column != column &&
9654           tree_view->priv->column_drop_func &&
9655           ! tree_view->priv->column_drop_func (tree_view, column, left_column, cur_column, tree_view->priv->column_drop_func_data))
9656         {
9657           left_column = cur_column;
9658           continue;
9659         }
9660       reorder = g_slice_new0 (GtkTreeViewColumnReorder);
9661       reorder->left_column = left_column;
9662       left_column = reorder->right_column = cur_column;
9663
9664       tree_view->priv->column_drag_info = g_list_append (tree_view->priv->column_drag_info, reorder);
9665     }
9666
9667   /* Add the last one */
9668   if (tree_view->priv->column_drop_func == NULL ||
9669       ((left_column != column) &&
9670        tree_view->priv->column_drop_func (tree_view, column, left_column, NULL, tree_view->priv->column_drop_func_data)))
9671     {
9672       reorder = g_slice_new0 (GtkTreeViewColumnReorder);
9673       reorder->left_column = left_column;
9674       reorder->right_column = NULL;
9675       tree_view->priv->column_drag_info = g_list_append (tree_view->priv->column_drag_info, reorder);
9676     }
9677
9678   /* We quickly check to see if it even makes sense to reorder columns. */
9679   /* If there is nothing that can be moved, then we return */
9680
9681   if (tree_view->priv->column_drag_info == NULL)
9682     return;
9683
9684   /* We know there are always 2 slots possbile, as you can always return column. */
9685   /* If that's all there is, return */
9686   if (tree_view->priv->column_drag_info->next == NULL ||
9687       (tree_view->priv->column_drag_info->next->next == NULL &&
9688        ((GtkTreeViewColumnReorder *)tree_view->priv->column_drag_info->data)->right_column == column &&
9689        ((GtkTreeViewColumnReorder *)tree_view->priv->column_drag_info->next->data)->left_column == column))
9690     {
9691       for (tmp_list = tree_view->priv->column_drag_info; tmp_list; tmp_list = tmp_list->next)
9692         g_slice_free (GtkTreeViewColumnReorder, tmp_list->data);
9693       g_list_free (tree_view->priv->column_drag_info);
9694       tree_view->priv->column_drag_info = NULL;
9695       return;
9696     }
9697   /* We fill in the ranges for the columns, now that we've isolated them */
9698   left = - TREE_VIEW_COLUMN_DRAG_DEAD_MULTIPLIER (tree_view);
9699
9700   for (tmp_list = tree_view->priv->column_drag_info; tmp_list; tmp_list = tmp_list->next)
9701     {
9702       reorder = (GtkTreeViewColumnReorder *) tmp_list->data;
9703
9704       reorder->left_align = left;
9705       if (tmp_list->next != NULL)
9706         {
9707           GtkAllocation right_allocation, left_allocation;
9708           GtkWidget    *left_button, *right_button;
9709
9710           g_assert (tmp_list->next->data);
9711
9712           right_button = gtk_tree_view_column_get_button (reorder->right_column);
9713           left_button  = gtk_tree_view_column_get_button
9714             (((GtkTreeViewColumnReorder *)tmp_list->next->data)->left_column);
9715
9716           gtk_widget_get_allocation (right_button, &right_allocation);
9717           gtk_widget_get_allocation (left_button, &left_allocation);
9718           left = reorder->right_align = (right_allocation.x + right_allocation.width + left_allocation.x) / 2;
9719         }
9720       else
9721         {
9722           reorder->right_align = gdk_window_get_width (tree_view->priv->header_window)
9723                                  + TREE_VIEW_COLUMN_DRAG_DEAD_MULTIPLIER (tree_view);
9724         }
9725     }
9726 }
9727
9728 void
9729 _gtk_tree_view_column_start_drag (GtkTreeView       *tree_view,
9730                                   GtkTreeViewColumn *column,
9731                                   GdkDevice         *device)
9732 {
9733   GdkEvent *send_event;
9734   GtkAllocation allocation;
9735   GtkAllocation button_allocation;
9736   GdkScreen *screen = gtk_widget_get_screen (GTK_WIDGET (tree_view));
9737   GtkWidget *button;
9738   GdkDevice *pointer, *keyboard;
9739
9740   g_return_if_fail (tree_view->priv->column_drag_info == NULL);
9741   g_return_if_fail (tree_view->priv->cur_reorder == NULL);
9742
9743   gtk_tree_view_set_column_drag_info (tree_view, column);
9744
9745   if (tree_view->priv->column_drag_info == NULL)
9746     return;
9747
9748   button = gtk_tree_view_column_get_button (column);
9749
9750   if (tree_view->priv->drag_window == NULL)
9751     {
9752       GdkWindowAttr attributes;
9753       guint attributes_mask;
9754
9755       gtk_widget_get_allocation (button, &button_allocation);
9756
9757       attributes.window_type = GDK_WINDOW_CHILD;
9758       attributes.wclass = GDK_INPUT_OUTPUT;
9759       attributes.x = button_allocation.x;
9760       attributes.y = 0;
9761       attributes.width = button_allocation.width;
9762       attributes.height = button_allocation.height;
9763       attributes.visual = gtk_widget_get_visual (GTK_WIDGET (tree_view));
9764       attributes.event_mask = GDK_VISIBILITY_NOTIFY_MASK | GDK_EXPOSURE_MASK | GDK_POINTER_MOTION_MASK;
9765       attributes_mask = GDK_WA_X | GDK_WA_Y | GDK_WA_VISUAL;
9766
9767       tree_view->priv->drag_window = gdk_window_new (tree_view->priv->bin_window,
9768                                                      &attributes,
9769                                                      attributes_mask);
9770       gdk_window_set_user_data (tree_view->priv->drag_window, GTK_WIDGET (tree_view));
9771     }
9772
9773   if (gdk_device_get_source (device) == GDK_SOURCE_KEYBOARD)
9774     {
9775       keyboard = device;
9776       pointer = gdk_device_get_associated_device (device);
9777     }
9778   else
9779     {
9780       pointer = device;
9781       keyboard = gdk_device_get_associated_device (device);
9782     }
9783
9784   gdk_device_ungrab (pointer, GDK_CURRENT_TIME);
9785   gdk_device_ungrab (keyboard, GDK_CURRENT_TIME);
9786
9787   gtk_grab_remove (button);
9788
9789   send_event = gdk_event_new (GDK_LEAVE_NOTIFY);
9790   send_event->crossing.send_event = TRUE;
9791   send_event->crossing.window = g_object_ref (gtk_button_get_event_window (GTK_BUTTON (button)));
9792   send_event->crossing.subwindow = NULL;
9793   send_event->crossing.detail = GDK_NOTIFY_ANCESTOR;
9794   send_event->crossing.time = GDK_CURRENT_TIME;
9795   gdk_event_set_device (send_event, device);
9796
9797   gtk_propagate_event (button, send_event);
9798   gdk_event_free (send_event);
9799
9800   send_event = gdk_event_new (GDK_BUTTON_RELEASE);
9801   send_event->button.window = g_object_ref (gdk_screen_get_root_window (screen));
9802   send_event->button.send_event = TRUE;
9803   send_event->button.time = GDK_CURRENT_TIME;
9804   send_event->button.x = -1;
9805   send_event->button.y = -1;
9806   send_event->button.axes = NULL;
9807   send_event->button.state = 0;
9808   send_event->button.button = 1;
9809   send_event->button.x_root = 0;
9810   send_event->button.y_root = 0;
9811   gdk_event_set_device (send_event, device);
9812
9813   gtk_propagate_event (button, send_event);
9814   gdk_event_free (send_event);
9815
9816   /* Kids, don't try this at home */
9817   g_object_ref (button);
9818   gtk_container_remove (GTK_CONTAINER (tree_view), button);
9819   gtk_widget_set_parent_window (button, tree_view->priv->drag_window);
9820   gtk_widget_set_parent (button, GTK_WIDGET (tree_view));
9821   g_object_unref (button);
9822
9823   gtk_widget_get_allocation (button, &button_allocation);
9824   tree_view->priv->drag_column_x = button_allocation.x;
9825   allocation = button_allocation;
9826   allocation.x = 0;
9827   gtk_widget_size_allocate (button, &allocation);
9828   gtk_widget_set_parent_window (button, tree_view->priv->drag_window);
9829
9830   tree_view->priv->drag_column = column;
9831   gdk_window_show (tree_view->priv->drag_window);
9832
9833   gtk_widget_grab_focus (GTK_WIDGET (tree_view));
9834   while (gtk_events_pending ())
9835     gtk_main_iteration ();
9836
9837   tree_view->priv->in_column_drag = TRUE;
9838
9839   gdk_device_grab (pointer,
9840                    tree_view->priv->drag_window,
9841                    GDK_OWNERSHIP_NONE,
9842                    FALSE,
9843                    GDK_POINTER_MOTION_MASK|GDK_BUTTON_RELEASE_MASK,
9844                    NULL,
9845                    GDK_CURRENT_TIME);
9846   gdk_device_grab (keyboard,
9847                    tree_view->priv->drag_window,
9848                    GDK_OWNERSHIP_NONE,
9849                    FALSE,
9850                    GDK_KEY_PRESS_MASK|GDK_KEY_RELEASE_MASK,
9851                    NULL,
9852                    GDK_CURRENT_TIME);
9853 }
9854
9855 static void
9856 gtk_tree_view_queue_draw_arrow (GtkTreeView        *tree_view,
9857                                 GtkRBTree          *tree,
9858                                 GtkRBNode          *node)
9859 {
9860   GtkAllocation allocation;
9861   GdkRectangle rect;
9862
9863   if (!gtk_widget_get_realized (GTK_WIDGET (tree_view)))
9864     return;
9865
9866   gtk_widget_get_allocation (GTK_WIDGET (tree_view), &allocation);
9867   rect.x = 0;
9868   rect.width = MAX (tree_view->priv->expander_size, MAX (tree_view->priv->width, allocation.width));
9869
9870   rect.y = gtk_tree_view_get_row_y_offset (tree_view, tree, node);
9871   rect.height = gtk_tree_view_get_row_height (tree_view, node);
9872
9873   gdk_window_invalidate_rect (tree_view->priv->bin_window, &rect, TRUE);
9874 }
9875
9876 void
9877 _gtk_tree_view_queue_draw_node (GtkTreeView        *tree_view,
9878                                 GtkRBTree          *tree,
9879                                 GtkRBNode          *node,
9880                                 const GdkRectangle *clip_rect)
9881 {
9882   GtkAllocation allocation;
9883   GdkRectangle rect;
9884
9885   if (!gtk_widget_get_realized (GTK_WIDGET (tree_view)))
9886     return;
9887
9888   gtk_widget_get_allocation (GTK_WIDGET (tree_view), &allocation);
9889   rect.x = 0;
9890   rect.width = MAX (tree_view->priv->width, allocation.width);
9891
9892   rect.y = gtk_tree_view_get_row_y_offset (tree_view, tree, node);
9893   rect.height = gtk_tree_view_get_row_height (tree_view, node);
9894
9895   if (clip_rect)
9896     {
9897       GdkRectangle new_rect;
9898
9899       gdk_rectangle_intersect (clip_rect, &rect, &new_rect);
9900
9901       gdk_window_invalidate_rect (tree_view->priv->bin_window, &new_rect, TRUE);
9902     }
9903   else
9904     {
9905       gdk_window_invalidate_rect (tree_view->priv->bin_window, &rect, TRUE);
9906     }
9907 }
9908
9909 static inline gint
9910 gtk_tree_view_get_effective_header_height (GtkTreeView *tree_view)
9911 {
9912   if (tree_view->priv->headers_visible)
9913     return tree_view->priv->header_height;
9914   /* else */
9915   return 0;
9916 }
9917
9918 gint
9919 _gtk_tree_view_get_header_height (GtkTreeView *tree_view)
9920 {
9921   return tree_view->priv->header_height;
9922 }
9923
9924 void
9925 _gtk_tree_view_get_row_separator_func (GtkTreeView                 *tree_view,
9926                                        GtkTreeViewRowSeparatorFunc *func,
9927                                        gpointer                    *data)
9928 {
9929   *func = tree_view->priv->row_separator_func;
9930   *data = tree_view->priv->row_separator_data;
9931 }
9932
9933 GtkTreePath *
9934 _gtk_tree_view_get_anchor_path (GtkTreeView *tree_view)
9935 {
9936   if (tree_view->priv->anchor)
9937     return gtk_tree_row_reference_get_path (tree_view->priv->anchor);
9938
9939   return NULL;
9940 }
9941
9942 void
9943 _gtk_tree_view_set_anchor_path (GtkTreeView *tree_view,
9944                                 GtkTreePath *anchor_path)
9945 {
9946   if (tree_view->priv->anchor)
9947     {
9948       gtk_tree_row_reference_free (tree_view->priv->anchor);
9949       tree_view->priv->anchor = NULL;
9950     }
9951
9952   if (anchor_path && tree_view->priv->model)
9953     tree_view->priv->anchor =
9954       gtk_tree_row_reference_new_proxy (G_OBJECT (tree_view),
9955                                         tree_view->priv->model, anchor_path);
9956 }
9957
9958 GtkRBTree *
9959 _gtk_tree_view_get_rbtree (GtkTreeView *tree_view)
9960 {
9961   return tree_view->priv->tree;
9962 }
9963
9964 GdkWindow *
9965 _gtk_tree_view_get_header_window (GtkTreeView *tree_view)
9966 {
9967   return tree_view->priv->header_window;
9968 }
9969
9970 void
9971 _gtk_tree_view_set_focus_column (GtkTreeView       *tree_view,
9972                                  GtkTreeViewColumn *column)
9973 {
9974   tree_view->priv->focus_column = column;
9975 }
9976
9977
9978 static void
9979 gtk_tree_view_queue_draw_path (GtkTreeView        *tree_view,
9980                                GtkTreePath        *path,
9981                                const GdkRectangle *clip_rect)
9982 {
9983   GtkRBTree *tree = NULL;
9984   GtkRBNode *node = NULL;
9985
9986   _gtk_tree_view_find_node (tree_view, path, &tree, &node);
9987
9988   if (tree)
9989     _gtk_tree_view_queue_draw_node (tree_view, tree, node, clip_rect);
9990 }
9991
9992 /* x and y are the mouse position
9993  */
9994 static void
9995 gtk_tree_view_draw_arrow (GtkTreeView *tree_view,
9996                           cairo_t     *cr,
9997                           GtkRBTree   *tree,
9998                           GtkRBNode   *node)
9999 {
10000   GdkRectangle area;
10001   GtkStateFlags state = 0;
10002   GtkStyleContext *context;
10003   GtkWidget *widget;
10004   gint x_offset = 0;
10005   gint x2;
10006   gint vertical_separator;
10007   gint expander_size;
10008   GtkCellRendererState flags;
10009
10010   widget = GTK_WIDGET (tree_view);
10011   context = gtk_widget_get_style_context (widget);
10012
10013   gtk_widget_style_get (widget,
10014                         "vertical-separator", &vertical_separator,
10015                         NULL);
10016   expander_size = tree_view->priv->expander_size - EXPANDER_EXTRA_PADDING;
10017
10018   if (! GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_PARENT))
10019     return;
10020
10021   gtk_tree_view_get_arrow_xrange (tree_view, tree, &x_offset, &x2);
10022
10023   area.x = x_offset;
10024   area.y = gtk_tree_view_get_cell_area_y_offset (tree_view, tree, node,
10025                                                  vertical_separator);
10026   area.width = expander_size;
10027   area.height = gtk_tree_view_get_cell_area_height (tree_view, node,
10028                                                     vertical_separator);
10029
10030   if (!gtk_widget_get_sensitive (widget))
10031     state |= GTK_STATE_FLAG_INSENSITIVE;
10032   else
10033     {
10034       flags = 0;
10035
10036       if (GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_SELECTED))
10037         flags |= GTK_CELL_RENDERER_SELECTED;
10038
10039       state = gtk_cell_renderer_get_state (NULL, widget, flags);
10040
10041       if (node == tree_view->priv->prelight_node &&
10042           tree_view->priv->arrow_prelit)
10043         state |= GTK_STATE_FLAG_PRELIGHT;
10044     }
10045
10046   if (node->children != NULL)
10047     state |= GTK_STATE_FLAG_ACTIVE;
10048
10049   gtk_style_context_save (context);
10050
10051   gtk_style_context_set_state (context, state);
10052   gtk_style_context_add_class (context, GTK_STYLE_CLASS_EXPANDER);
10053
10054   gtk_style_context_push_animatable_region (context, node);
10055
10056   gtk_render_expander (context, cr,
10057                        area.x, area.y,
10058                        area.width, area.height);
10059
10060   gtk_style_context_pop_animatable_region (context);
10061   gtk_style_context_restore (context);
10062 }
10063
10064 static void
10065 gtk_tree_view_focus_to_cursor (GtkTreeView *tree_view)
10066
10067 {
10068   GtkTreePath *cursor_path;
10069
10070   if ((tree_view->priv->tree == NULL) ||
10071       (! gtk_widget_get_realized (GTK_WIDGET (tree_view))))
10072     return;
10073
10074   cursor_path = NULL;
10075   if (tree_view->priv->cursor)
10076     cursor_path = gtk_tree_row_reference_get_path (tree_view->priv->cursor);
10077
10078   if (cursor_path == NULL)
10079     {
10080       /* Consult the selection before defaulting to the
10081        * first focusable element
10082        */
10083       GList *selected_rows;
10084       GtkTreeModel *model;
10085       GtkTreeSelection *selection;
10086
10087       selection = gtk_tree_view_get_selection (tree_view);
10088       selected_rows = gtk_tree_selection_get_selected_rows (selection, &model);
10089
10090       if (selected_rows)
10091         {
10092           cursor_path = gtk_tree_path_copy((const GtkTreePath *)(selected_rows->data));
10093           g_list_foreach (selected_rows, (GFunc)gtk_tree_path_free, NULL);
10094           g_list_free (selected_rows);
10095         }
10096       else
10097         {
10098           cursor_path = gtk_tree_path_new_first ();
10099           search_first_focusable_path (tree_view, &cursor_path,
10100                                        TRUE, NULL, NULL);
10101         }
10102
10103       gtk_tree_row_reference_free (tree_view->priv->cursor);
10104       tree_view->priv->cursor = NULL;
10105
10106       if (cursor_path)
10107         {
10108           if (gtk_tree_selection_get_mode (tree_view->priv->selection) == GTK_SELECTION_MULTIPLE)
10109             gtk_tree_view_real_set_cursor (tree_view, cursor_path, FALSE, FALSE);
10110           else
10111             gtk_tree_view_real_set_cursor (tree_view, cursor_path, TRUE, FALSE);
10112         }
10113     }
10114
10115   if (cursor_path)
10116     {
10117       tree_view->priv->draw_keyfocus = TRUE;
10118
10119       gtk_tree_view_queue_draw_path (tree_view, cursor_path, NULL);
10120       gtk_tree_path_free (cursor_path);
10121
10122       if (tree_view->priv->focus_column == NULL)
10123         {
10124           GList *list;
10125           for (list = tree_view->priv->columns; list; list = list->next)
10126             {
10127               if (gtk_tree_view_column_get_visible (GTK_TREE_VIEW_COLUMN (list->data)))
10128                 {
10129                   GtkCellArea *cell_area;
10130
10131                   tree_view->priv->focus_column = GTK_TREE_VIEW_COLUMN (list->data);
10132
10133                   /* This happens when the treeview initially grabs focus and there
10134                    * is no column in focus, here we explicitly focus into the first cell */
10135                   cell_area = gtk_cell_layout_get_area (GTK_CELL_LAYOUT (tree_view->priv->focus_column));
10136                   if (!gtk_cell_area_get_focus_cell (cell_area))
10137                     {
10138                       gboolean rtl;
10139
10140                       rtl = (gtk_widget_get_direction (GTK_WIDGET (tree_view)) == GTK_TEXT_DIR_RTL);
10141                       gtk_cell_area_focus (cell_area,
10142                                            rtl ? GTK_DIR_LEFT : GTK_DIR_RIGHT);
10143                     }
10144
10145                   break;
10146                 }
10147             }
10148         }
10149     }
10150 }
10151
10152 static void
10153 gtk_tree_view_move_cursor_up_down (GtkTreeView *tree_view,
10154                                    gint         count)
10155 {
10156   gint selection_count;
10157   GtkRBTree *cursor_tree = NULL;
10158   GtkRBNode *cursor_node = NULL;
10159   GtkRBTree *new_cursor_tree = NULL;
10160   GtkRBNode *new_cursor_node = NULL;
10161   GtkTreePath *cursor_path = NULL;
10162   gboolean grab_focus = TRUE;
10163   gboolean selectable;
10164   GtkDirectionType direction;
10165   GtkCellArea *cell_area = NULL;
10166   GtkCellRenderer *last_focus_cell = NULL;
10167   GtkTreeIter iter;
10168
10169   if (! gtk_widget_has_focus (GTK_WIDGET (tree_view)))
10170     return;
10171
10172   cursor_path = NULL;
10173   if (!gtk_tree_row_reference_valid (tree_view->priv->cursor))
10174     /* FIXME: we lost the cursor; should we get the first? */
10175     return;
10176
10177   cursor_path = gtk_tree_row_reference_get_path (tree_view->priv->cursor);
10178   _gtk_tree_view_find_node (tree_view, cursor_path,
10179                             &cursor_tree, &cursor_node);
10180
10181   if (cursor_tree == NULL)
10182     /* FIXME: we lost the cursor; should we get the first? */
10183     return;
10184
10185   direction = count < 0 ? GTK_DIR_UP : GTK_DIR_DOWN;
10186
10187   if (tree_view->priv->focus_column)
10188     cell_area = gtk_cell_layout_get_area (GTK_CELL_LAYOUT (tree_view->priv->focus_column));
10189
10190   /* If focus stays in the area for this row, then just return for this round */
10191   if (cell_area && (count == -1 || count == 1) &&
10192       gtk_tree_model_get_iter (tree_view->priv->model, &iter, cursor_path))
10193     {
10194       gtk_tree_view_column_cell_set_cell_data (tree_view->priv->focus_column,
10195                                                tree_view->priv->model,
10196                                                &iter,
10197                                                GTK_RBNODE_FLAG_SET (cursor_node, GTK_RBNODE_IS_PARENT),
10198                                                cursor_node->children?TRUE:FALSE);
10199
10200       /* Save the last cell that had focus, if we hit the end of the view we'll give
10201        * focus back to it. */
10202       last_focus_cell = gtk_cell_area_get_focus_cell (cell_area);
10203
10204       /* If focus stays in the area, no need to change the cursor row */
10205       if (gtk_cell_area_focus (cell_area, direction))
10206         return;
10207     }
10208
10209   selection_count = gtk_tree_selection_count_selected_rows (tree_view->priv->selection);
10210   selectable = _gtk_tree_selection_row_is_selectable (tree_view->priv->selection,
10211                                                       cursor_node,
10212                                                       cursor_path);
10213
10214   if (selection_count == 0
10215       && gtk_tree_selection_get_mode (tree_view->priv->selection) != GTK_SELECTION_NONE
10216       && !tree_view->priv->modify_selection_pressed
10217       && selectable)
10218     {
10219       /* Don't move the cursor, but just select the current node */
10220       new_cursor_tree = cursor_tree;
10221       new_cursor_node = cursor_node;
10222     }
10223   else
10224     {
10225       if (count == -1)
10226         _gtk_rbtree_prev_full (cursor_tree, cursor_node,
10227                                &new_cursor_tree, &new_cursor_node);
10228       else
10229         _gtk_rbtree_next_full (cursor_tree, cursor_node,
10230                                &new_cursor_tree, &new_cursor_node);
10231     }
10232
10233   gtk_tree_path_free (cursor_path);
10234
10235   if (new_cursor_node)
10236     {
10237       cursor_path = _gtk_tree_view_find_path (tree_view,
10238                                               new_cursor_tree, new_cursor_node);
10239
10240       search_first_focusable_path (tree_view, &cursor_path,
10241                                    (count != -1),
10242                                    &new_cursor_tree,
10243                                    &new_cursor_node);
10244
10245       if (cursor_path)
10246         gtk_tree_path_free (cursor_path);
10247     }
10248
10249   /*
10250    * If the list has only one item and multi-selection is set then select
10251    * the row (if not yet selected).
10252    */
10253   if (gtk_tree_selection_get_mode (tree_view->priv->selection) == GTK_SELECTION_MULTIPLE &&
10254       new_cursor_node == NULL)
10255     {
10256       if (count == -1)
10257         _gtk_rbtree_next_full (cursor_tree, cursor_node,
10258                                &new_cursor_tree, &new_cursor_node);
10259       else
10260         _gtk_rbtree_prev_full (cursor_tree, cursor_node,
10261                                &new_cursor_tree, &new_cursor_node);
10262
10263       if (new_cursor_node == NULL
10264           && !GTK_RBNODE_FLAG_SET (cursor_node, GTK_RBNODE_IS_SELECTED))
10265         {
10266           new_cursor_node = cursor_node;
10267           new_cursor_tree = cursor_tree;
10268         }
10269       else
10270         {
10271           new_cursor_node = NULL;
10272         }
10273     }
10274
10275   if (new_cursor_node)
10276     {
10277       cursor_path = _gtk_tree_view_find_path (tree_view, new_cursor_tree, new_cursor_node);
10278       gtk_tree_view_real_set_cursor (tree_view, cursor_path, TRUE, TRUE);
10279       gtk_tree_path_free (cursor_path);
10280
10281       /* Give focus to the area in the new row */
10282       if (cell_area)
10283         gtk_cell_area_focus (cell_area, direction);
10284     }
10285   else
10286     {
10287       gtk_tree_view_clamp_node_visible (tree_view, cursor_tree, cursor_node);
10288
10289       if (!tree_view->priv->extend_selection_pressed)
10290         {
10291           if (! gtk_widget_keynav_failed (GTK_WIDGET (tree_view),
10292                                           count < 0 ?
10293                                           GTK_DIR_UP : GTK_DIR_DOWN))
10294             {
10295               GtkWidget *toplevel = gtk_widget_get_toplevel (GTK_WIDGET (tree_view));
10296
10297               if (toplevel)
10298                 gtk_widget_child_focus (toplevel,
10299                                         count < 0 ?
10300                                         GTK_DIR_TAB_BACKWARD :
10301                                         GTK_DIR_TAB_FORWARD);
10302
10303               grab_focus = FALSE;
10304             }
10305         }
10306       else
10307         {
10308           gtk_widget_error_bell (GTK_WIDGET (tree_view));
10309         }
10310
10311       if (cell_area)
10312         gtk_cell_area_set_focus_cell (cell_area, last_focus_cell);
10313     }
10314
10315   if (grab_focus)
10316     gtk_widget_grab_focus (GTK_WIDGET (tree_view));
10317 }
10318
10319 static void
10320 gtk_tree_view_move_cursor_page_up_down (GtkTreeView *tree_view,
10321                                         gint         count)
10322 {
10323   GtkRBTree *cursor_tree = NULL;
10324   GtkRBNode *cursor_node = NULL;
10325   GtkTreePath *old_cursor_path = NULL;
10326   GtkTreePath *cursor_path = NULL;
10327   GtkRBTree *start_cursor_tree = NULL;
10328   GtkRBNode *start_cursor_node = NULL;
10329   gint y;
10330   gint window_y;
10331   gint vertical_separator;
10332
10333   if (!gtk_widget_has_focus (GTK_WIDGET (tree_view)))
10334     return;
10335
10336   if (gtk_tree_row_reference_valid (tree_view->priv->cursor))
10337     old_cursor_path = gtk_tree_row_reference_get_path (tree_view->priv->cursor);
10338   else
10339     /* This is sorta weird.  Focus in should give us a cursor */
10340     return;
10341
10342   gtk_widget_style_get (GTK_WIDGET (tree_view), "vertical-separator", &vertical_separator, NULL);
10343   _gtk_tree_view_find_node (tree_view, old_cursor_path,
10344                             &cursor_tree, &cursor_node);
10345
10346   if (cursor_tree == NULL)
10347     {
10348       /* FIXME: we lost the cursor.  Should we try to get one? */
10349       gtk_tree_path_free (old_cursor_path);
10350       return;
10351     }
10352   g_return_if_fail (cursor_node != NULL);
10353
10354   y = _gtk_rbtree_node_find_offset (cursor_tree, cursor_node);
10355   window_y = RBTREE_Y_TO_TREE_WINDOW_Y (tree_view, y);
10356   y += tree_view->priv->cursor_offset;
10357   y += count * (int)gtk_adjustment_get_page_increment (tree_view->priv->vadjustment);
10358   y = CLAMP (y, (gint)gtk_adjustment_get_lower (tree_view->priv->vadjustment),  (gint)gtk_adjustment_get_upper (tree_view->priv->vadjustment) - vertical_separator);
10359
10360   if (y >= tree_view->priv->height)
10361     y = tree_view->priv->height - 1;
10362
10363   tree_view->priv->cursor_offset =
10364     _gtk_rbtree_find_offset (tree_view->priv->tree, y,
10365                              &cursor_tree, &cursor_node);
10366
10367   if (cursor_tree == NULL)
10368     {
10369       /* FIXME: we lost the cursor.  Should we try to get one? */
10370       gtk_tree_path_free (old_cursor_path);
10371       return;
10372     }
10373
10374   if (tree_view->priv->cursor_offset
10375       > gtk_tree_view_get_row_height (tree_view, cursor_node))
10376     {
10377       _gtk_rbtree_next_full (cursor_tree, cursor_node,
10378                              &cursor_tree, &cursor_node);
10379       tree_view->priv->cursor_offset -= gtk_tree_view_get_row_height (tree_view, cursor_node);
10380     }
10381
10382   y -= tree_view->priv->cursor_offset;
10383   cursor_path = _gtk_tree_view_find_path (tree_view, cursor_tree, cursor_node);
10384
10385   start_cursor_tree = cursor_tree;
10386   start_cursor_node = cursor_node;
10387
10388   if (! search_first_focusable_path (tree_view, &cursor_path,
10389                                      (count != -1),
10390                                      &cursor_tree, &cursor_node))
10391     {
10392       /* It looks like we reached the end of the view without finding
10393        * a focusable row.  We will step backwards to find the last
10394        * focusable row.
10395        */
10396       cursor_tree = start_cursor_tree;
10397       cursor_node = start_cursor_node;
10398       cursor_path = _gtk_tree_view_find_path (tree_view, cursor_tree, cursor_node);
10399
10400       search_first_focusable_path (tree_view, &cursor_path,
10401                                    (count == -1),
10402                                    &cursor_tree, &cursor_node);
10403     }
10404
10405   if (!cursor_path)
10406     goto cleanup;
10407
10408   /* update y */
10409   y = _gtk_rbtree_node_find_offset (cursor_tree, cursor_node);
10410
10411   gtk_tree_view_real_set_cursor (tree_view, cursor_path, TRUE, FALSE);
10412
10413   y -= window_y;
10414   gtk_tree_view_scroll_to_point (tree_view, -1, y);
10415   gtk_tree_view_clamp_node_visible (tree_view, cursor_tree, cursor_node);
10416   _gtk_tree_view_queue_draw_node (tree_view, cursor_tree, cursor_node, NULL);
10417
10418   if (!gtk_tree_path_compare (old_cursor_path, cursor_path))
10419     gtk_widget_error_bell (GTK_WIDGET (tree_view));
10420
10421   gtk_widget_grab_focus (GTK_WIDGET (tree_view));
10422
10423 cleanup:
10424   gtk_tree_path_free (old_cursor_path);
10425   gtk_tree_path_free (cursor_path);
10426 }
10427
10428 static void
10429 gtk_tree_view_move_cursor_left_right (GtkTreeView *tree_view,
10430                                       gint         count)
10431 {
10432   GtkRBTree *cursor_tree = NULL;
10433   GtkRBNode *cursor_node = NULL;
10434   GtkTreePath *cursor_path = NULL;
10435   GtkTreeViewColumn *column;
10436   GtkTreeIter iter;
10437   GList *list;
10438   gboolean found_column = FALSE;
10439   gboolean rtl;
10440   GtkDirectionType direction;
10441   GtkCellArea     *cell_area;
10442   GtkCellRenderer *last_focus_cell = NULL;
10443   GtkCellArea     *last_focus_area = NULL;
10444
10445   rtl = (gtk_widget_get_direction (GTK_WIDGET (tree_view)) == GTK_TEXT_DIR_RTL);
10446
10447   if (!gtk_widget_has_focus (GTK_WIDGET (tree_view)))
10448     return;
10449
10450   if (gtk_tree_row_reference_valid (tree_view->priv->cursor))
10451     cursor_path = gtk_tree_row_reference_get_path (tree_view->priv->cursor);
10452   else
10453     return;
10454
10455   _gtk_tree_view_find_node (tree_view, cursor_path, &cursor_tree, &cursor_node);
10456   if (cursor_tree == NULL)
10457     return;
10458   if (gtk_tree_model_get_iter (tree_view->priv->model, &iter, cursor_path) == FALSE)
10459     {
10460       gtk_tree_path_free (cursor_path);
10461       return;
10462     }
10463   gtk_tree_path_free (cursor_path);
10464
10465   list = rtl ? g_list_last (tree_view->priv->columns) : g_list_first (tree_view->priv->columns);
10466   if (tree_view->priv->focus_column)
10467     {
10468       /* Save the cell/area we are moving focus from, if moving the cursor
10469        * by one step hits the end we'll set focus back here */
10470       last_focus_area = gtk_cell_layout_get_area (GTK_CELL_LAYOUT (tree_view->priv->focus_column));
10471       last_focus_cell = gtk_cell_area_get_focus_cell (last_focus_area);
10472
10473       for (; list; list = (rtl ? list->prev : list->next))
10474         {
10475           if (list->data == tree_view->priv->focus_column)
10476             break;
10477         }
10478     }
10479
10480   direction = count > 0 ? GTK_DIR_RIGHT : GTK_DIR_LEFT;
10481
10482   while (list)
10483     {
10484       column = list->data;
10485       if (gtk_tree_view_column_get_visible (column) == FALSE)
10486         goto loop_end;
10487
10488       gtk_tree_view_column_cell_set_cell_data (column,
10489                                                tree_view->priv->model,
10490                                                &iter,
10491                                                GTK_RBNODE_FLAG_SET (cursor_node, GTK_RBNODE_IS_PARENT),
10492                                                cursor_node->children?TRUE:FALSE);
10493
10494       cell_area = gtk_cell_layout_get_area (GTK_CELL_LAYOUT (column));
10495       if (gtk_cell_area_focus (cell_area, direction))
10496         {
10497           tree_view->priv->focus_column = column;
10498           found_column = TRUE;
10499           break;
10500         }
10501
10502     loop_end:
10503       if (count == 1)
10504         list = rtl ? list->prev : list->next;
10505       else
10506         list = rtl ? list->next : list->prev;
10507     }
10508
10509   if (found_column)
10510     {
10511       if (!gtk_tree_view_has_can_focus_cell (tree_view))
10512         _gtk_tree_view_queue_draw_node (tree_view,
10513                                         cursor_tree,
10514                                         cursor_node,
10515                                         NULL);
10516       g_signal_emit (tree_view, tree_view_signals[CURSOR_CHANGED], 0);
10517       gtk_widget_grab_focus (GTK_WIDGET (tree_view));
10518     }
10519   else
10520     {
10521       gtk_widget_error_bell (GTK_WIDGET (tree_view));
10522
10523       if (last_focus_area)
10524         gtk_cell_area_set_focus_cell (last_focus_area, last_focus_cell);
10525     }
10526
10527   gtk_tree_view_clamp_column_visible (tree_view,
10528                                       tree_view->priv->focus_column, TRUE);
10529 }
10530
10531 static void
10532 gtk_tree_view_move_cursor_start_end (GtkTreeView *tree_view,
10533                                      gint         count)
10534 {
10535   GtkRBTree *cursor_tree;
10536   GtkRBNode *cursor_node;
10537   GtkTreePath *path;
10538   GtkTreePath *old_path;
10539
10540   if (!gtk_widget_has_focus (GTK_WIDGET (tree_view)))
10541     return;
10542
10543   g_return_if_fail (tree_view->priv->tree != NULL);
10544
10545   gtk_tree_view_get_cursor (tree_view, &old_path, NULL);
10546
10547   cursor_tree = tree_view->priv->tree;
10548   cursor_node = cursor_tree->root;
10549
10550   if (count == -1)
10551     {
10552       while (cursor_node && cursor_node->left != cursor_tree->nil)
10553         cursor_node = cursor_node->left;
10554
10555       /* Now go forward to find the first focusable row. */
10556       path = _gtk_tree_view_find_path (tree_view, cursor_tree, cursor_node);
10557       search_first_focusable_path (tree_view, &path,
10558                                    TRUE, &cursor_tree, &cursor_node);
10559     }
10560   else
10561     {
10562       do
10563         {
10564           while (cursor_node && cursor_node->right != cursor_tree->nil)
10565             cursor_node = cursor_node->right;
10566           if (cursor_node->children == NULL)
10567             break;
10568
10569           cursor_tree = cursor_node->children;
10570           cursor_node = cursor_tree->root;
10571         }
10572       while (1);
10573
10574       /* Now go backwards to find last focusable row. */
10575       path = _gtk_tree_view_find_path (tree_view, cursor_tree, cursor_node);
10576       search_first_focusable_path (tree_view, &path,
10577                                    FALSE, &cursor_tree, &cursor_node);
10578     }
10579
10580   if (!path)
10581     goto cleanup;
10582
10583   if (gtk_tree_path_compare (old_path, path))
10584     {
10585       gtk_tree_view_real_set_cursor (tree_view, path, TRUE, TRUE);
10586       gtk_widget_grab_focus (GTK_WIDGET (tree_view));
10587     }
10588   else
10589     {
10590       gtk_widget_error_bell (GTK_WIDGET (tree_view));
10591     }
10592
10593 cleanup:
10594   gtk_tree_path_free (old_path);
10595   gtk_tree_path_free (path);
10596 }
10597
10598 static gboolean
10599 gtk_tree_view_real_select_all (GtkTreeView *tree_view)
10600 {
10601   if (!gtk_widget_has_focus (GTK_WIDGET (tree_view)))
10602     return FALSE;
10603
10604   if (gtk_tree_selection_get_mode (tree_view->priv->selection) != GTK_SELECTION_MULTIPLE)
10605     return FALSE;
10606
10607   gtk_tree_selection_select_all (tree_view->priv->selection);
10608
10609   return TRUE;
10610 }
10611
10612 static gboolean
10613 gtk_tree_view_real_unselect_all (GtkTreeView *tree_view)
10614 {
10615   if (!gtk_widget_has_focus (GTK_WIDGET (tree_view)))
10616     return FALSE;
10617
10618   if (gtk_tree_selection_get_mode (tree_view->priv->selection) != GTK_SELECTION_MULTIPLE)
10619     return FALSE;
10620
10621   gtk_tree_selection_unselect_all (tree_view->priv->selection);
10622
10623   return TRUE;
10624 }
10625
10626 static gboolean
10627 gtk_tree_view_real_select_cursor_row (GtkTreeView *tree_view,
10628                                       gboolean     start_editing)
10629 {
10630   GtkRBTree *new_tree = NULL;
10631   GtkRBNode *new_node = NULL;
10632   GtkRBTree *cursor_tree = NULL;
10633   GtkRBNode *cursor_node = NULL;
10634   GtkTreePath *cursor_path = NULL;
10635   GtkTreeSelectMode mode = 0;
10636
10637   if (!gtk_widget_has_focus (GTK_WIDGET (tree_view)))
10638     return FALSE;
10639
10640   if (tree_view->priv->cursor)
10641     cursor_path = gtk_tree_row_reference_get_path (tree_view->priv->cursor);
10642
10643   if (cursor_path == NULL)
10644     return FALSE;
10645
10646   _gtk_tree_view_find_node (tree_view, cursor_path,
10647                             &cursor_tree, &cursor_node);
10648
10649   if (cursor_tree == NULL)
10650     {
10651       gtk_tree_path_free (cursor_path);
10652       return FALSE;
10653     }
10654
10655   if (!tree_view->priv->extend_selection_pressed && start_editing &&
10656       tree_view->priv->focus_column)
10657     {
10658       if (gtk_tree_view_start_editing (tree_view, cursor_path, FALSE))
10659         {
10660           gtk_tree_path_free (cursor_path);
10661           return TRUE;
10662         }
10663     }
10664
10665   if (tree_view->priv->modify_selection_pressed)
10666     mode |= GTK_TREE_SELECT_MODE_TOGGLE;
10667   if (tree_view->priv->extend_selection_pressed)
10668     mode |= GTK_TREE_SELECT_MODE_EXTEND;
10669
10670   _gtk_tree_selection_internal_select_node (tree_view->priv->selection,
10671                                             cursor_node,
10672                                             cursor_tree,
10673                                             cursor_path,
10674                                             mode,
10675                                             FALSE);
10676
10677   /* We bail out if the original (tree, node) don't exist anymore after
10678    * handling the selection-changed callback.  We do return TRUE because
10679    * the key press has been handled at this point.
10680    */
10681   _gtk_tree_view_find_node (tree_view, cursor_path, &new_tree, &new_node);
10682
10683   if (cursor_tree != new_tree || cursor_node != new_node)
10684     return FALSE;
10685
10686   gtk_tree_view_clamp_node_visible (tree_view, cursor_tree, cursor_node);
10687
10688   gtk_widget_grab_focus (GTK_WIDGET (tree_view));
10689   _gtk_tree_view_queue_draw_node (tree_view, cursor_tree, cursor_node, NULL);
10690
10691   if (!tree_view->priv->extend_selection_pressed)
10692     gtk_tree_view_row_activated (tree_view, cursor_path,
10693                                  tree_view->priv->focus_column);
10694
10695   gtk_tree_path_free (cursor_path);
10696
10697   return TRUE;
10698 }
10699
10700 static gboolean
10701 gtk_tree_view_real_toggle_cursor_row (GtkTreeView *tree_view)
10702 {
10703   GtkRBTree *new_tree = NULL;
10704   GtkRBNode *new_node = NULL;
10705   GtkRBTree *cursor_tree = NULL;
10706   GtkRBNode *cursor_node = NULL;
10707   GtkTreePath *cursor_path = NULL;
10708
10709   if (!gtk_widget_has_focus (GTK_WIDGET (tree_view)))
10710     return FALSE;
10711
10712   cursor_path = NULL;
10713   if (tree_view->priv->cursor)
10714     cursor_path = gtk_tree_row_reference_get_path (tree_view->priv->cursor);
10715
10716   if (cursor_path == NULL)
10717     return FALSE;
10718
10719   _gtk_tree_view_find_node (tree_view, cursor_path,
10720                             &cursor_tree, &cursor_node);
10721   if (cursor_tree == NULL)
10722     {
10723       gtk_tree_path_free (cursor_path);
10724       return FALSE;
10725     }
10726
10727   _gtk_tree_selection_internal_select_node (tree_view->priv->selection,
10728                                             cursor_node,
10729                                             cursor_tree,
10730                                             cursor_path,
10731                                             GTK_TREE_SELECT_MODE_TOGGLE,
10732                                             FALSE);
10733
10734   /* We bail out if the original (tree, node) don't exist anymore after
10735    * handling the selection-changed callback.  We do return TRUE because
10736    * the key press has been handled at this point.
10737    */
10738   _gtk_tree_view_find_node (tree_view, cursor_path, &new_tree, &new_node);
10739
10740   if (cursor_tree != new_tree || cursor_node != new_node)
10741     return FALSE;
10742
10743   gtk_tree_view_clamp_node_visible (tree_view, cursor_tree, cursor_node);
10744
10745   gtk_widget_grab_focus (GTK_WIDGET (tree_view));
10746   gtk_tree_view_queue_draw_path (tree_view, cursor_path, NULL);
10747   gtk_tree_path_free (cursor_path);
10748
10749   return TRUE;
10750 }
10751
10752 static gboolean
10753 gtk_tree_view_real_expand_collapse_cursor_row (GtkTreeView *tree_view,
10754                                                gboolean     logical,
10755                                                gboolean     expand,
10756                                                gboolean     open_all)
10757 {
10758   GtkTreePath *cursor_path = NULL;
10759   GtkRBTree *tree;
10760   GtkRBNode *node;
10761
10762   if (!gtk_widget_has_focus (GTK_WIDGET (tree_view)))
10763     return FALSE;
10764
10765   cursor_path = NULL;
10766   if (tree_view->priv->cursor)
10767     cursor_path = gtk_tree_row_reference_get_path (tree_view->priv->cursor);
10768
10769   if (cursor_path == NULL)
10770     return FALSE;
10771
10772   if (_gtk_tree_view_find_node (tree_view, cursor_path, &tree, &node))
10773     return FALSE;
10774
10775   /* Don't handle the event if we aren't an expander */
10776   if (!((node->flags & GTK_RBNODE_IS_PARENT) == GTK_RBNODE_IS_PARENT))
10777     return FALSE;
10778
10779   if (!logical
10780       && gtk_widget_get_direction (GTK_WIDGET (tree_view)) == GTK_TEXT_DIR_RTL)
10781     expand = !expand;
10782
10783   if (expand)
10784     gtk_tree_view_real_expand_row (tree_view, cursor_path, tree, node, open_all, TRUE);
10785   else
10786     gtk_tree_view_real_collapse_row (tree_view, cursor_path, tree, node, TRUE);
10787
10788   gtk_tree_path_free (cursor_path);
10789
10790   return TRUE;
10791 }
10792
10793 static gboolean
10794 gtk_tree_view_real_select_cursor_parent (GtkTreeView *tree_view)
10795 {
10796   GtkRBTree *cursor_tree = NULL;
10797   GtkRBNode *cursor_node = NULL;
10798   GtkTreePath *cursor_path = NULL;
10799   GdkModifierType state;
10800
10801   if (!gtk_widget_has_focus (GTK_WIDGET (tree_view)))
10802     goto out;
10803
10804   cursor_path = NULL;
10805   if (tree_view->priv->cursor)
10806     cursor_path = gtk_tree_row_reference_get_path (tree_view->priv->cursor);
10807
10808   if (cursor_path == NULL)
10809     goto out;
10810
10811   _gtk_tree_view_find_node (tree_view, cursor_path,
10812                             &cursor_tree, &cursor_node);
10813   if (cursor_tree == NULL)
10814     {
10815       gtk_tree_path_free (cursor_path);
10816       goto out;
10817     }
10818
10819   if (cursor_tree->parent_node)
10820     {
10821       gtk_tree_view_queue_draw_path (tree_view, cursor_path, NULL);
10822       cursor_node = cursor_tree->parent_node;
10823       cursor_tree = cursor_tree->parent_tree;
10824
10825       gtk_tree_path_up (cursor_path);
10826
10827       if (gtk_get_current_event_state (&state))
10828         {
10829           GdkModifierType modify_mod_mask;
10830
10831           modify_mod_mask =
10832             gtk_widget_get_modifier_mask (GTK_WIDGET (tree_view),
10833                                           GDK_MODIFIER_INTENT_MODIFY_SELECTION);
10834
10835           if ((state & modify_mod_mask) == modify_mod_mask)
10836             tree_view->priv->modify_selection_pressed = TRUE;
10837         }
10838
10839       gtk_tree_view_real_set_cursor (tree_view, cursor_path, TRUE, FALSE);
10840       gtk_tree_view_clamp_node_visible (tree_view, cursor_tree, cursor_node);
10841
10842       gtk_widget_grab_focus (GTK_WIDGET (tree_view));
10843       gtk_tree_view_queue_draw_path (tree_view, cursor_path, NULL);
10844       gtk_tree_path_free (cursor_path);
10845
10846       tree_view->priv->modify_selection_pressed = FALSE;
10847
10848       return TRUE;
10849     }
10850
10851  out:
10852
10853   tree_view->priv->search_entry_avoid_unhandled_binding = TRUE;
10854   return FALSE;
10855 }
10856
10857 static gboolean
10858 gtk_tree_view_search_entry_flush_timeout (GtkTreeView *tree_view)
10859 {
10860   gtk_tree_view_search_dialog_hide (tree_view->priv->search_window, tree_view, NULL);
10861   tree_view->priv->typeselect_flush_timeout = 0;
10862
10863   return FALSE;
10864 }
10865
10866 /* Cut and paste from gtkwindow.c */
10867 static void
10868 send_focus_change (GtkWidget *widget,
10869                    GdkDevice *device,
10870                    gboolean   in)
10871 {
10872   GdkDeviceManager *device_manager;
10873   GList *devices, *d;
10874
10875   device_manager = gdk_display_get_device_manager (gtk_widget_get_display (widget));
10876   devices = gdk_device_manager_list_devices (device_manager, GDK_DEVICE_TYPE_MASTER);
10877   devices = g_list_concat (devices, gdk_device_manager_list_devices (device_manager, GDK_DEVICE_TYPE_SLAVE));
10878   devices = g_list_concat (devices, gdk_device_manager_list_devices (device_manager, GDK_DEVICE_TYPE_FLOATING));
10879
10880   for (d = devices; d; d = d->next)
10881     {
10882       GdkDevice *dev = d->data;
10883       GdkEvent *fevent;
10884       GdkWindow *window;
10885
10886       if (gdk_device_get_source (dev) != GDK_SOURCE_KEYBOARD)
10887         continue;
10888
10889       window = gtk_widget_get_window (widget);
10890
10891       /* Skip non-master keyboards that haven't
10892        * selected for events from this window
10893        */
10894       if (gdk_device_get_device_type (dev) != GDK_DEVICE_TYPE_MASTER &&
10895           !gdk_window_get_device_events (window, dev))
10896         continue;
10897
10898       fevent = gdk_event_new (GDK_FOCUS_CHANGE);
10899
10900       fevent->focus_change.type = GDK_FOCUS_CHANGE;
10901       fevent->focus_change.window = g_object_ref (window);
10902       fevent->focus_change.in = in;
10903       gdk_event_set_device (fevent, device);
10904
10905       gtk_widget_send_focus_change (widget, fevent);
10906
10907       gdk_event_free (fevent);
10908     }
10909
10910   g_list_free (devices);
10911 }
10912
10913 static void
10914 gtk_tree_view_ensure_interactive_directory (GtkTreeView *tree_view)
10915 {
10916   GtkWidget *frame, *vbox, *toplevel;
10917   GdkScreen *screen;
10918
10919   if (tree_view->priv->search_custom_entry_set)
10920     return;
10921
10922   toplevel = gtk_widget_get_toplevel (GTK_WIDGET (tree_view));
10923   screen = gtk_widget_get_screen (GTK_WIDGET (tree_view));
10924
10925    if (tree_view->priv->search_window != NULL)
10926      {
10927        if (gtk_window_has_group (GTK_WINDOW (toplevel)))
10928          gtk_window_group_add_window (gtk_window_get_group (GTK_WINDOW (toplevel)),
10929                                       GTK_WINDOW (tree_view->priv->search_window));
10930        else if (gtk_window_has_group (GTK_WINDOW (tree_view->priv->search_window)))
10931          gtk_window_group_remove_window (gtk_window_get_group (GTK_WINDOW (tree_view->priv->search_window)),
10932                                          GTK_WINDOW (tree_view->priv->search_window));
10933
10934        gtk_window_set_screen (GTK_WINDOW (tree_view->priv->search_window), screen);
10935
10936        return;
10937      }
10938
10939   tree_view->priv->search_window = gtk_window_new (GTK_WINDOW_POPUP);
10940   gtk_window_set_screen (GTK_WINDOW (tree_view->priv->search_window), screen);
10941
10942   if (gtk_window_has_group (GTK_WINDOW (toplevel)))
10943     gtk_window_group_add_window (gtk_window_get_group (GTK_WINDOW (toplevel)),
10944                                  GTK_WINDOW (tree_view->priv->search_window));
10945
10946   gtk_window_set_type_hint (GTK_WINDOW (tree_view->priv->search_window),
10947                             GDK_WINDOW_TYPE_HINT_UTILITY);
10948   gtk_window_set_modal (GTK_WINDOW (tree_view->priv->search_window), TRUE);
10949   g_signal_connect (tree_view->priv->search_window, "delete-event",
10950                     G_CALLBACK (gtk_tree_view_search_delete_event),
10951                     tree_view);
10952   g_signal_connect (tree_view->priv->search_window, "key-press-event",
10953                     G_CALLBACK (gtk_tree_view_search_key_press_event),
10954                     tree_view);
10955   g_signal_connect (tree_view->priv->search_window, "button-press-event",
10956                     G_CALLBACK (gtk_tree_view_search_button_press_event),
10957                     tree_view);
10958   g_signal_connect (tree_view->priv->search_window, "scroll-event",
10959                     G_CALLBACK (gtk_tree_view_search_scroll_event),
10960                     tree_view);
10961
10962   frame = gtk_frame_new (NULL);
10963   gtk_frame_set_shadow_type (GTK_FRAME (frame), GTK_SHADOW_ETCHED_IN);
10964   gtk_widget_show (frame);
10965   gtk_container_add (GTK_CONTAINER (tree_view->priv->search_window), frame);
10966
10967   vbox = gtk_box_new (GTK_ORIENTATION_VERTICAL, 0);
10968   gtk_widget_show (vbox);
10969   gtk_container_add (GTK_CONTAINER (frame), vbox);
10970   gtk_container_set_border_width (GTK_CONTAINER (vbox), 3);
10971
10972   /* add entry */
10973   tree_view->priv->search_entry = gtk_entry_new ();
10974   gtk_widget_show (tree_view->priv->search_entry);
10975   g_signal_connect (tree_view->priv->search_entry, "populate-popup",
10976                     G_CALLBACK (gtk_tree_view_search_disable_popdown),
10977                     tree_view);
10978   g_signal_connect (tree_view->priv->search_entry,
10979                     "activate", G_CALLBACK (gtk_tree_view_search_activate),
10980                     tree_view);
10981
10982   g_signal_connect (_gtk_entry_get_im_context (GTK_ENTRY (tree_view->priv->search_entry)),
10983                     "preedit-changed",
10984                     G_CALLBACK (gtk_tree_view_search_preedit_changed),
10985                     tree_view);
10986
10987   gtk_container_add (GTK_CONTAINER (vbox),
10988                      tree_view->priv->search_entry);
10989
10990   gtk_widget_realize (tree_view->priv->search_entry);
10991 }
10992
10993 /* Pops up the interactive search entry.  If keybinding is TRUE then the user
10994  * started this by typing the start_interactive_search keybinding.  Otherwise, it came from
10995  */
10996 static gboolean
10997 gtk_tree_view_real_start_interactive_search (GtkTreeView *tree_view,
10998                                              GdkDevice   *device,
10999                                              gboolean     keybinding)
11000 {
11001   /* We only start interactive search if we have focus or the columns
11002    * have focus.  If one of our children have focus, we don't want to
11003    * start the search.
11004    */
11005   GList *list;
11006   gboolean found_focus = FALSE;
11007   GtkWidgetClass *entry_parent_class;
11008
11009   if (!tree_view->priv->enable_search && !keybinding)
11010     return FALSE;
11011
11012   if (tree_view->priv->search_custom_entry_set)
11013     return FALSE;
11014
11015   if (tree_view->priv->search_window != NULL &&
11016       gtk_widget_get_visible (tree_view->priv->search_window))
11017     return TRUE;
11018
11019   for (list = tree_view->priv->columns; list; list = list->next)
11020     {
11021       GtkTreeViewColumn *column;
11022       GtkWidget         *button;
11023
11024       column = list->data;
11025       if (!gtk_tree_view_column_get_visible (column))
11026         continue;
11027
11028       button = gtk_tree_view_column_get_button (column);
11029       if (gtk_widget_has_focus (button))
11030         {
11031           found_focus = TRUE;
11032           break;
11033         }
11034     }
11035
11036   if (gtk_widget_has_focus (GTK_WIDGET (tree_view)))
11037     found_focus = TRUE;
11038
11039   if (!found_focus)
11040     return FALSE;
11041
11042   if (tree_view->priv->search_column < 0)
11043     return FALSE;
11044
11045   gtk_tree_view_ensure_interactive_directory (tree_view);
11046
11047   if (keybinding)
11048     gtk_entry_set_text (GTK_ENTRY (tree_view->priv->search_entry), "");
11049
11050   /* done, show it */
11051   tree_view->priv->search_position_func (tree_view, tree_view->priv->search_window, tree_view->priv->search_position_user_data);
11052   gtk_widget_show (tree_view->priv->search_window);
11053   if (tree_view->priv->search_entry_changed_id == 0)
11054     {
11055       tree_view->priv->search_entry_changed_id =
11056         g_signal_connect (tree_view->priv->search_entry, "changed",
11057                           G_CALLBACK (gtk_tree_view_search_init),
11058                           tree_view);
11059     }
11060
11061   tree_view->priv->typeselect_flush_timeout =
11062     gdk_threads_add_timeout (GTK_TREE_VIEW_SEARCH_DIALOG_TIMEOUT,
11063                    (GSourceFunc) gtk_tree_view_search_entry_flush_timeout,
11064                    tree_view);
11065
11066   /* Grab focus will select all the text.  We don't want that to happen, so we
11067    * call the parent instance and bypass the selection change.  This is probably
11068    * really non-kosher. */
11069   entry_parent_class = g_type_class_peek_parent (GTK_ENTRY_GET_CLASS (tree_view->priv->search_entry));
11070   (entry_parent_class->grab_focus) (tree_view->priv->search_entry);
11071
11072   /* send focus-in event */
11073   send_focus_change (tree_view->priv->search_entry, device, TRUE);
11074
11075   /* search first matching iter */
11076   gtk_tree_view_search_init (tree_view->priv->search_entry, tree_view);
11077
11078   return TRUE;
11079 }
11080
11081 static gboolean
11082 gtk_tree_view_start_interactive_search (GtkTreeView *tree_view)
11083 {
11084   return gtk_tree_view_real_start_interactive_search (tree_view,
11085                                                       gtk_get_current_event_device (),
11086                                                       TRUE);
11087 }
11088
11089 /* this function returns the new width of the column being resized given
11090  * the column and x position of the cursor; the x cursor position is passed
11091  * in as a pointer and automagicly corrected if it's beyond min/max limits
11092  */
11093 static gint
11094 gtk_tree_view_new_column_width (GtkTreeView *tree_view,
11095                                 gint       i,
11096                                 gint      *x)
11097 {
11098   GtkAllocation allocation;
11099   GtkTreeViewColumn *column;
11100   GtkRequisition button_req;
11101   gint max_width, min_width;
11102   gint width;
11103   gboolean rtl;
11104
11105   /* first translate the x position from widget->window
11106    * to clist->clist_window
11107    */
11108   rtl = (gtk_widget_get_direction (GTK_WIDGET (tree_view)) == GTK_TEXT_DIR_RTL);
11109   column = g_list_nth (tree_view->priv->columns, i)->data;
11110   gtk_widget_get_allocation (gtk_tree_view_column_get_button (column), &allocation);
11111   width = rtl ? (allocation.x + allocation.width - *x) : (*x - allocation.x);
11112
11113   /* Clamp down the value */
11114   min_width = gtk_tree_view_column_get_min_width (column);
11115   if (min_width == -1)
11116     {
11117       gtk_widget_get_preferred_size (gtk_tree_view_column_get_button (column), &button_req, NULL);
11118       width = MAX (button_req.width, width);
11119     }
11120   else
11121     width = MAX (min_width, width);
11122
11123   max_width = gtk_tree_view_column_get_max_width (column);
11124   if (max_width != -1)
11125     width = MIN (width, max_width);
11126
11127   *x = rtl ? (allocation.x + allocation.width - width) : (allocation.x + width);
11128
11129   return width;
11130 }
11131
11132
11133 /* FIXME this adjust_allocation is a big cut-and-paste from
11134  * GtkCList, needs to be some "official" way to do this
11135  * factored out.
11136  */
11137 typedef struct
11138 {
11139   GdkWindow *window;
11140   int dx;
11141   int dy;
11142 } ScrollData;
11143
11144 /* The window to which widget->window is relative */
11145 #define ALLOCATION_WINDOW(widget)               \
11146    (!gtk_widget_get_has_window (widget) ?                   \
11147     gtk_widget_get_window (widget) :                        \
11148     gdk_window_get_parent (gtk_widget_get_window (widget)))
11149
11150 static void
11151 adjust_allocation_recurse (GtkWidget *widget,
11152                            gpointer   data)
11153 {
11154   GtkAllocation allocation;
11155   ScrollData *scroll_data = data;
11156
11157   /* Need to really size allocate instead of just poking
11158    * into widget->allocation if the widget is not realized.
11159    * FIXME someone figure out why this was.
11160    */
11161   gtk_widget_get_allocation (widget, &allocation);
11162   if (!gtk_widget_get_realized (widget))
11163     {
11164       if (gtk_widget_get_visible (widget))
11165         {
11166           GdkRectangle tmp_rectangle = allocation;
11167           tmp_rectangle.x += scroll_data->dx;
11168           tmp_rectangle.y += scroll_data->dy;
11169
11170           gtk_widget_size_allocate (widget, &tmp_rectangle);
11171         }
11172     }
11173   else
11174     {
11175       if (ALLOCATION_WINDOW (widget) == scroll_data->window)
11176         {
11177           allocation.x += scroll_data->dx;
11178           allocation.y += scroll_data->dy;
11179           gtk_widget_set_allocation (widget, &allocation);
11180
11181           if (GTK_IS_CONTAINER (widget))
11182             gtk_container_forall (GTK_CONTAINER (widget),
11183                                   adjust_allocation_recurse,
11184                                   data);
11185         }
11186     }
11187 }
11188
11189 static void
11190 adjust_allocation (GtkWidget *widget,
11191                    int        dx,
11192                    int        dy)
11193 {
11194   ScrollData scroll_data;
11195
11196   if (gtk_widget_get_realized (widget))
11197     scroll_data.window = ALLOCATION_WINDOW (widget);
11198   else
11199     scroll_data.window = NULL;
11200
11201   scroll_data.dx = dx;
11202   scroll_data.dy = dy;
11203
11204   adjust_allocation_recurse (widget, &scroll_data);
11205 }
11206
11207 /* Callbacks */
11208 static void
11209 gtk_tree_view_adjustment_changed (GtkAdjustment *adjustment,
11210                                   GtkTreeView   *tree_view)
11211 {
11212   if (gtk_widget_get_realized (GTK_WIDGET (tree_view)))
11213     {
11214       GtkStyleContext *context;
11215       gint dy;
11216
11217       gdk_window_move (tree_view->priv->bin_window,
11218                        - gtk_adjustment_get_value (tree_view->priv->hadjustment),
11219                        gtk_tree_view_get_effective_header_height (tree_view));
11220       gdk_window_move (tree_view->priv->header_window,
11221                        - gtk_adjustment_get_value (tree_view->priv->hadjustment),
11222                        0);
11223       dy = tree_view->priv->dy - (int) gtk_adjustment_get_value (tree_view->priv->vadjustment);
11224       if (dy)
11225         {
11226           update_prelight (tree_view,
11227                            tree_view->priv->event_last_x,
11228                            tree_view->priv->event_last_y - dy);
11229
11230           if (tree_view->priv->edited_column)
11231             {
11232               GList *list;
11233               GtkTreeViewChild *child = NULL;
11234               GtkCellEditable *edit_widget;
11235               GtkCellArea *area;
11236
11237               area        = gtk_cell_layout_get_area (GTK_CELL_LAYOUT (tree_view->priv->edited_column));
11238               edit_widget = gtk_cell_area_get_edit_widget (area);
11239               if (GTK_IS_WIDGET (edit_widget))
11240                 {
11241                   adjust_allocation (GTK_WIDGET (edit_widget), 0, dy);
11242
11243                   for (list = tree_view->priv->children; list; list = list->next)
11244                     {
11245                       child = (GtkTreeViewChild *)list->data;
11246                       if (child->widget == GTK_WIDGET (edit_widget))
11247                         {
11248                           child->y += dy;
11249                           break;
11250                         }
11251                     }
11252                 }
11253             }
11254         }
11255       gdk_window_scroll (tree_view->priv->bin_window, 0, dy);
11256
11257       context = gtk_widget_get_style_context (GTK_WIDGET (tree_view));
11258       gtk_style_context_scroll_animations (context, tree_view->priv->bin_window, 0, dy);
11259
11260       if (tree_view->priv->dy != (int) gtk_adjustment_get_value (tree_view->priv->vadjustment))
11261         {
11262           /* update our dy and top_row */
11263           tree_view->priv->dy = (int) gtk_adjustment_get_value (tree_view->priv->vadjustment);
11264
11265           if (!tree_view->priv->in_top_row_to_dy)
11266             gtk_tree_view_dy_to_top_row (tree_view);
11267         }
11268
11269       gdk_window_process_updates (tree_view->priv->header_window, TRUE);
11270       gtk_tree_view_bin_process_updates (tree_view);
11271     }
11272 }
11273
11274 \f
11275
11276 /* Public methods
11277  */
11278
11279 /**
11280  * gtk_tree_view_new:
11281  *
11282  * Creates a new #GtkTreeView widget.
11283  *
11284  * Return value: A newly created #GtkTreeView widget.
11285  **/
11286 GtkWidget *
11287 gtk_tree_view_new (void)
11288 {
11289   return g_object_new (GTK_TYPE_TREE_VIEW, NULL);
11290 }
11291
11292 /**
11293  * gtk_tree_view_new_with_model:
11294  * @model: the model.
11295  *
11296  * Creates a new #GtkTreeView widget with the model initialized to @model.
11297  *
11298  * Return value: A newly created #GtkTreeView widget.
11299  **/
11300 GtkWidget *
11301 gtk_tree_view_new_with_model (GtkTreeModel *model)
11302 {
11303   return g_object_new (GTK_TYPE_TREE_VIEW, "model", model, NULL);
11304 }
11305
11306 /* Public Accessors
11307  */
11308
11309 /**
11310  * gtk_tree_view_get_model:
11311  * @tree_view: a #GtkTreeView
11312  *
11313  * Returns the model the #GtkTreeView is based on.  Returns %NULL if the
11314  * model is unset.
11315  *
11316  * Return value: (transfer none): A #GtkTreeModel, or %NULL if none is currently being used.
11317  **/
11318 GtkTreeModel *
11319 gtk_tree_view_get_model (GtkTreeView *tree_view)
11320 {
11321   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), NULL);
11322
11323   return tree_view->priv->model;
11324 }
11325
11326 /**
11327  * gtk_tree_view_set_model:
11328  * @tree_view: A #GtkTreeNode.
11329  * @model: (allow-none): The model.
11330  *
11331  * Sets the model for a #GtkTreeView.  If the @tree_view already has a model
11332  * set, it will remove it before setting the new model.  If @model is %NULL,
11333  * then it will unset the old model.
11334  **/
11335 void
11336 gtk_tree_view_set_model (GtkTreeView  *tree_view,
11337                          GtkTreeModel *model)
11338 {
11339   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
11340   g_return_if_fail (model == NULL || GTK_IS_TREE_MODEL (model));
11341
11342   if (model == tree_view->priv->model)
11343     return;
11344
11345   if (tree_view->priv->scroll_to_path)
11346     {
11347       gtk_tree_row_reference_free (tree_view->priv->scroll_to_path);
11348       tree_view->priv->scroll_to_path = NULL;
11349     }
11350
11351   if (tree_view->priv->rubber_band_status)
11352     gtk_tree_view_stop_rubber_band (tree_view);
11353
11354   if (tree_view->priv->model)
11355     {
11356       GList *tmplist = tree_view->priv->columns;
11357       GtkStyleContext *context;
11358
11359       gtk_tree_view_unref_and_check_selection_tree (tree_view, tree_view->priv->tree);
11360       gtk_tree_view_stop_editing (tree_view, TRUE);
11361
11362       context = gtk_widget_get_style_context (GTK_WIDGET (tree_view));
11363       gtk_style_context_cancel_animations (context, NULL);
11364
11365       g_signal_handlers_disconnect_by_func (tree_view->priv->model,
11366                                             gtk_tree_view_row_changed,
11367                                             tree_view);
11368       g_signal_handlers_disconnect_by_func (tree_view->priv->model,
11369                                             gtk_tree_view_row_inserted,
11370                                             tree_view);
11371       g_signal_handlers_disconnect_by_func (tree_view->priv->model,
11372                                             gtk_tree_view_row_has_child_toggled,
11373                                             tree_view);
11374       g_signal_handlers_disconnect_by_func (tree_view->priv->model,
11375                                             gtk_tree_view_row_deleted,
11376                                             tree_view);
11377       g_signal_handlers_disconnect_by_func (tree_view->priv->model,
11378                                             gtk_tree_view_rows_reordered,
11379                                             tree_view);
11380
11381       for (; tmplist; tmplist = tmplist->next)
11382         _gtk_tree_view_column_unset_model (tmplist->data,
11383                                            tree_view->priv->model);
11384
11385       if (tree_view->priv->tree)
11386         gtk_tree_view_free_rbtree (tree_view);
11387
11388       gtk_tree_row_reference_free (tree_view->priv->drag_dest_row);
11389       tree_view->priv->drag_dest_row = NULL;
11390       gtk_tree_row_reference_free (tree_view->priv->cursor);
11391       tree_view->priv->cursor = NULL;
11392       gtk_tree_row_reference_free (tree_view->priv->anchor);
11393       tree_view->priv->anchor = NULL;
11394       gtk_tree_row_reference_free (tree_view->priv->top_row);
11395       tree_view->priv->top_row = NULL;
11396       gtk_tree_row_reference_free (tree_view->priv->scroll_to_path);
11397       tree_view->priv->scroll_to_path = NULL;
11398
11399       tree_view->priv->scroll_to_column = NULL;
11400
11401       g_object_unref (tree_view->priv->model);
11402
11403       tree_view->priv->search_column = -1;
11404       tree_view->priv->fixed_height_check = 0;
11405       tree_view->priv->fixed_height = -1;
11406       tree_view->priv->dy = tree_view->priv->top_row_dy = 0;
11407       tree_view->priv->last_button_x = -1;
11408       tree_view->priv->last_button_y = -1;
11409     }
11410
11411   tree_view->priv->model = model;
11412
11413   if (tree_view->priv->model)
11414     {
11415       gint i;
11416       GtkTreePath *path;
11417       GtkTreeIter iter;
11418       GtkTreeModelFlags flags;
11419
11420       if (tree_view->priv->search_column == -1)
11421         {
11422           for (i = 0; i < gtk_tree_model_get_n_columns (model); i++)
11423             {
11424               GType type = gtk_tree_model_get_column_type (model, i);
11425
11426               if (g_value_type_transformable (type, G_TYPE_STRING))
11427                 {
11428                   tree_view->priv->search_column = i;
11429                   break;
11430                 }
11431             }
11432         }
11433
11434       g_object_ref (tree_view->priv->model);
11435       g_signal_connect (tree_view->priv->model,
11436                         "row-changed",
11437                         G_CALLBACK (gtk_tree_view_row_changed),
11438                         tree_view);
11439       g_signal_connect (tree_view->priv->model,
11440                         "row-inserted",
11441                         G_CALLBACK (gtk_tree_view_row_inserted),
11442                         tree_view);
11443       g_signal_connect (tree_view->priv->model,
11444                         "row-has-child-toggled",
11445                         G_CALLBACK (gtk_tree_view_row_has_child_toggled),
11446                         tree_view);
11447       g_signal_connect (tree_view->priv->model,
11448                         "row-deleted",
11449                         G_CALLBACK (gtk_tree_view_row_deleted),
11450                         tree_view);
11451       g_signal_connect (tree_view->priv->model,
11452                         "rows-reordered",
11453                         G_CALLBACK (gtk_tree_view_rows_reordered),
11454                         tree_view);
11455
11456       flags = gtk_tree_model_get_flags (tree_view->priv->model);
11457       if ((flags & GTK_TREE_MODEL_LIST_ONLY) == GTK_TREE_MODEL_LIST_ONLY)
11458         tree_view->priv->is_list = TRUE;
11459       else
11460         tree_view->priv->is_list = FALSE;
11461
11462       path = gtk_tree_path_new_first ();
11463       if (gtk_tree_model_get_iter (tree_view->priv->model, &iter, path))
11464         {
11465           tree_view->priv->tree = _gtk_rbtree_new ();
11466           gtk_tree_view_build_tree (tree_view, tree_view->priv->tree, &iter, 1, FALSE);
11467         }
11468       gtk_tree_path_free (path);
11469
11470       /*  FIXME: do I need to do this? gtk_tree_view_create_buttons (tree_view); */
11471       install_presize_handler (tree_view);
11472     }
11473
11474   g_object_notify (G_OBJECT (tree_view), "model");
11475
11476   if (tree_view->priv->selection)
11477   _gtk_tree_selection_emit_changed (tree_view->priv->selection);
11478
11479   if (gtk_widget_get_realized (GTK_WIDGET (tree_view)))
11480     gtk_widget_queue_resize (GTK_WIDGET (tree_view));
11481 }
11482
11483 /**
11484  * gtk_tree_view_get_selection:
11485  * @tree_view: A #GtkTreeView.
11486  *
11487  * Gets the #GtkTreeSelection associated with @tree_view.
11488  *
11489  * Return value: (transfer none): A #GtkTreeSelection object.
11490  **/
11491 GtkTreeSelection *
11492 gtk_tree_view_get_selection (GtkTreeView *tree_view)
11493 {
11494   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), NULL);
11495
11496   return tree_view->priv->selection;
11497 }
11498
11499 /**
11500  * gtk_tree_view_get_hadjustment:
11501  * @tree_view: A #GtkTreeView
11502  *
11503  * Gets the #GtkAdjustment currently being used for the horizontal aspect.
11504  *
11505  * Return value: (transfer none): A #GtkAdjustment object, or %NULL
11506  *     if none is currently being used.
11507  *
11508  * Deprecated: 3.0: Use gtk_scrollable_get_hadjustment()
11509  **/
11510 GtkAdjustment *
11511 gtk_tree_view_get_hadjustment (GtkTreeView *tree_view)
11512 {
11513   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), NULL);
11514
11515   return gtk_tree_view_do_get_hadjustment (tree_view);
11516 }
11517
11518 static GtkAdjustment *
11519 gtk_tree_view_do_get_hadjustment (GtkTreeView *tree_view)
11520 {
11521   return tree_view->priv->hadjustment;
11522 }
11523
11524 /**
11525  * gtk_tree_view_set_hadjustment:
11526  * @tree_view: A #GtkTreeView
11527  * @adjustment: (allow-none): The #GtkAdjustment to set, or %NULL
11528  *
11529  * Sets the #GtkAdjustment for the current horizontal aspect.
11530  *
11531  * Deprecated: 3.0: Use gtk_scrollable_set_hadjustment()
11532  **/
11533 void
11534 gtk_tree_view_set_hadjustment (GtkTreeView   *tree_view,
11535                                GtkAdjustment *adjustment)
11536 {
11537   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
11538   g_return_if_fail (adjustment == NULL || GTK_IS_ADJUSTMENT (adjustment));
11539
11540   gtk_tree_view_do_set_hadjustment (tree_view, adjustment);
11541 }
11542
11543 static void
11544 gtk_tree_view_do_set_hadjustment (GtkTreeView   *tree_view,
11545                                   GtkAdjustment *adjustment)
11546 {
11547   GtkTreeViewPrivate *priv = tree_view->priv;
11548
11549   if (adjustment && priv->hadjustment == adjustment)
11550     return;
11551
11552   if (priv->hadjustment != NULL)
11553     {
11554       g_signal_handlers_disconnect_by_func (priv->hadjustment,
11555                                             gtk_tree_view_adjustment_changed,
11556                                             tree_view);
11557       g_object_unref (priv->hadjustment);
11558     }
11559
11560   if (adjustment == NULL)
11561     adjustment = gtk_adjustment_new (0.0, 0.0, 0.0,
11562                                      0.0, 0.0, 0.0);
11563
11564   g_signal_connect (adjustment, "value-changed",
11565                     G_CALLBACK (gtk_tree_view_adjustment_changed), tree_view);
11566   priv->hadjustment = g_object_ref_sink (adjustment);
11567   /* FIXME: Adjustment should probably be populated here with fresh values, but
11568    * internal details are too complicated for me to decipher right now.
11569    */
11570   gtk_tree_view_adjustment_changed (NULL, tree_view);
11571
11572   g_object_notify (G_OBJECT (tree_view), "hadjustment");
11573 }
11574
11575 /**
11576  * gtk_tree_view_get_vadjustment:
11577  * @tree_view: A #GtkTreeView
11578  *
11579  * Gets the #GtkAdjustment currently being used for the vertical aspect.
11580  *
11581  * Return value: (transfer none): A #GtkAdjustment object, or %NULL
11582  *     if none is currently being used.
11583  *
11584  * Deprecated: 3.0: Use gtk_scrollable_get_vadjustment()
11585  **/
11586 GtkAdjustment *
11587 gtk_tree_view_get_vadjustment (GtkTreeView *tree_view)
11588 {
11589   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), NULL);
11590
11591   return gtk_tree_view_do_get_vadjustment (tree_view);
11592 }
11593
11594 static GtkAdjustment *
11595 gtk_tree_view_do_get_vadjustment (GtkTreeView *tree_view)
11596 {
11597   return tree_view->priv->vadjustment;
11598 }
11599
11600 /**
11601  * gtk_tree_view_set_vadjustment:
11602  * @tree_view: A #GtkTreeView
11603  * @adjustment: (allow-none): The #GtkAdjustment to set, or %NULL
11604  *
11605  * Sets the #GtkAdjustment for the current vertical aspect.
11606  *
11607  * Deprecated: 3.0: Use gtk_scrollable_set_vadjustment()
11608  **/
11609 void
11610 gtk_tree_view_set_vadjustment (GtkTreeView   *tree_view,
11611                                GtkAdjustment *adjustment)
11612 {
11613   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
11614   g_return_if_fail (adjustment == NULL || GTK_IS_ADJUSTMENT (adjustment));
11615
11616   gtk_tree_view_do_set_vadjustment (tree_view, adjustment);
11617 }
11618
11619 static void
11620 gtk_tree_view_do_set_vadjustment (GtkTreeView   *tree_view,
11621                                   GtkAdjustment *adjustment)
11622 {
11623   GtkTreeViewPrivate *priv = tree_view->priv;
11624
11625   if (adjustment && priv->vadjustment == adjustment)
11626     return;
11627
11628   if (priv->vadjustment != NULL)
11629     {
11630       g_signal_handlers_disconnect_by_func (priv->vadjustment,
11631                                             gtk_tree_view_adjustment_changed,
11632                                             tree_view);
11633       g_object_unref (priv->vadjustment);
11634     }
11635
11636   if (adjustment == NULL)
11637     adjustment = gtk_adjustment_new (0.0, 0.0, 0.0,
11638                                      0.0, 0.0, 0.0);
11639
11640   g_signal_connect (adjustment, "value-changed",
11641                     G_CALLBACK (gtk_tree_view_adjustment_changed), tree_view);
11642   priv->vadjustment = g_object_ref_sink (adjustment);
11643   /* FIXME: Adjustment should probably be populated here with fresh values, but
11644    * internal details are too complicated for me to decipher right now.
11645    */
11646   gtk_tree_view_adjustment_changed (NULL, tree_view);
11647   g_object_notify (G_OBJECT (tree_view), "vadjustment");
11648 }
11649
11650 /* Column and header operations */
11651
11652 /**
11653  * gtk_tree_view_get_headers_visible:
11654  * @tree_view: A #GtkTreeView.
11655  *
11656  * Returns %TRUE if the headers on the @tree_view are visible.
11657  *
11658  * Return value: Whether the headers are visible or not.
11659  **/
11660 gboolean
11661 gtk_tree_view_get_headers_visible (GtkTreeView *tree_view)
11662 {
11663   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), FALSE);
11664
11665   return tree_view->priv->headers_visible;
11666 }
11667
11668 /**
11669  * gtk_tree_view_set_headers_visible:
11670  * @tree_view: A #GtkTreeView.
11671  * @headers_visible: %TRUE if the headers are visible
11672  *
11673  * Sets the visibility state of the headers.
11674  **/
11675 void
11676 gtk_tree_view_set_headers_visible (GtkTreeView *tree_view,
11677                                    gboolean     headers_visible)
11678 {
11679   gint x, y;
11680   GList *list;
11681   GtkTreeViewColumn *column;
11682   GtkAllocation allocation;
11683   GtkWidget *button;
11684
11685   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
11686
11687   headers_visible = !! headers_visible;
11688
11689   if (tree_view->priv->headers_visible == headers_visible)
11690     return;
11691
11692   tree_view->priv->headers_visible = headers_visible == TRUE;
11693
11694   if (gtk_widget_get_realized (GTK_WIDGET (tree_view)))
11695     {
11696       gdk_window_get_position (tree_view->priv->bin_window, &x, &y);
11697       if (headers_visible)
11698         {
11699           gtk_widget_get_allocation (GTK_WIDGET (tree_view), &allocation);
11700           gdk_window_move_resize (tree_view->priv->bin_window,
11701                                   x, y  + gtk_tree_view_get_effective_header_height (tree_view),
11702                                   tree_view->priv->width, allocation.height -  + gtk_tree_view_get_effective_header_height (tree_view));
11703
11704           if (gtk_widget_get_mapped (GTK_WIDGET (tree_view)))
11705             gtk_tree_view_map_buttons (tree_view);
11706         }
11707       else
11708         {
11709           gdk_window_move_resize (tree_view->priv->bin_window, x, y, tree_view->priv->width, tree_view->priv->height);
11710
11711           for (list = tree_view->priv->columns; list; list = list->next)
11712             {
11713               column = list->data;
11714               button = gtk_tree_view_column_get_button (column);
11715
11716               gtk_widget_hide (button);
11717               gtk_widget_unmap (button);
11718             }
11719           gdk_window_hide (tree_view->priv->header_window);
11720         }
11721     }
11722
11723   gtk_widget_get_allocation (GTK_WIDGET (tree_view), &allocation);
11724   gtk_adjustment_configure (tree_view->priv->vadjustment,
11725                             gtk_adjustment_get_value (tree_view->priv->vadjustment),
11726                             0,
11727                             tree_view->priv->height,
11728                             gtk_adjustment_get_step_increment (tree_view->priv->vadjustment),
11729                             (allocation.height - gtk_tree_view_get_effective_header_height (tree_view)) / 2,
11730                             allocation.height - gtk_tree_view_get_effective_header_height (tree_view));
11731
11732   gtk_widget_queue_resize (GTK_WIDGET (tree_view));
11733
11734   g_object_notify (G_OBJECT (tree_view), "headers-visible");
11735 }
11736
11737 /**
11738  * gtk_tree_view_columns_autosize:
11739  * @tree_view: A #GtkTreeView.
11740  *
11741  * Resizes all columns to their optimal width. Only works after the
11742  * treeview has been realized.
11743  **/
11744 void
11745 gtk_tree_view_columns_autosize (GtkTreeView *tree_view)
11746 {
11747   gboolean dirty = FALSE;
11748   GList *list;
11749   GtkTreeViewColumn *column;
11750
11751   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
11752
11753   for (list = tree_view->priv->columns; list; list = list->next)
11754     {
11755       column = list->data;
11756       if (gtk_tree_view_column_get_sizing (column) == GTK_TREE_VIEW_COLUMN_AUTOSIZE)
11757         continue;
11758       _gtk_tree_view_column_cell_set_dirty (column, TRUE);
11759       dirty = TRUE;
11760     }
11761
11762   if (dirty)
11763     gtk_widget_queue_resize (GTK_WIDGET (tree_view));
11764 }
11765
11766 /**
11767  * gtk_tree_view_set_headers_clickable:
11768  * @tree_view: A #GtkTreeView.
11769  * @setting: %TRUE if the columns are clickable.
11770  *
11771  * Allow the column title buttons to be clicked.
11772  **/
11773 void
11774 gtk_tree_view_set_headers_clickable (GtkTreeView *tree_view,
11775                                      gboolean   setting)
11776 {
11777   GList *list;
11778
11779   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
11780
11781   for (list = tree_view->priv->columns; list; list = list->next)
11782     gtk_tree_view_column_set_clickable (GTK_TREE_VIEW_COLUMN (list->data), setting);
11783
11784   g_object_notify (G_OBJECT (tree_view), "headers-clickable");
11785 }
11786
11787
11788 /**
11789  * gtk_tree_view_get_headers_clickable:
11790  * @tree_view: A #GtkTreeView.
11791  *
11792  * Returns whether all header columns are clickable.
11793  *
11794  * Return value: %TRUE if all header columns are clickable, otherwise %FALSE
11795  *
11796  * Since: 2.10
11797  **/
11798 gboolean
11799 gtk_tree_view_get_headers_clickable (GtkTreeView *tree_view)
11800 {
11801   GList *list;
11802
11803   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), FALSE);
11804
11805   for (list = tree_view->priv->columns; list; list = list->next)
11806     if (!gtk_tree_view_column_get_clickable (GTK_TREE_VIEW_COLUMN (list->data)))
11807       return FALSE;
11808
11809   return TRUE;
11810 }
11811
11812 /**
11813  * gtk_tree_view_set_rules_hint
11814  * @tree_view: a #GtkTreeView
11815  * @setting: %TRUE if the tree requires reading across rows
11816  *
11817  * This function tells GTK+ that the user interface for your
11818  * application requires users to read across tree rows and associate
11819  * cells with one another. By default, GTK+ will then render the tree
11820  * with alternating row colors. Do <emphasis>not</emphasis> use it
11821  * just because you prefer the appearance of the ruled tree; that's a
11822  * question for the theme. Some themes will draw tree rows in
11823  * alternating colors even when rules are turned off, and users who
11824  * prefer that appearance all the time can choose those themes. You
11825  * should call this function only as a <emphasis>semantic</emphasis>
11826  * hint to the theme engine that your tree makes alternating colors
11827  * useful from a functional standpoint (since it has lots of columns,
11828  * generally).
11829  *
11830  **/
11831 void
11832 gtk_tree_view_set_rules_hint (GtkTreeView  *tree_view,
11833                               gboolean      setting)
11834 {
11835   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
11836
11837   setting = setting != FALSE;
11838
11839   if (tree_view->priv->has_rules != setting)
11840     {
11841       tree_view->priv->has_rules = setting;
11842       gtk_widget_queue_draw (GTK_WIDGET (tree_view));
11843     }
11844
11845   g_object_notify (G_OBJECT (tree_view), "rules-hint");
11846 }
11847
11848 /**
11849  * gtk_tree_view_get_rules_hint
11850  * @tree_view: a #GtkTreeView
11851  *
11852  * Gets the setting set by gtk_tree_view_set_rules_hint().
11853  *
11854  * Return value: %TRUE if rules are useful for the user of this tree
11855  **/
11856 gboolean
11857 gtk_tree_view_get_rules_hint (GtkTreeView  *tree_view)
11858 {
11859   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), FALSE);
11860
11861   return tree_view->priv->has_rules;
11862 }
11863
11864 /* Public Column functions
11865  */
11866
11867 /**
11868  * gtk_tree_view_append_column:
11869  * @tree_view: A #GtkTreeView.
11870  * @column: The #GtkTreeViewColumn to add.
11871  *
11872  * Appends @column to the list of columns. If @tree_view has "fixed_height"
11873  * mode enabled, then @column must have its "sizing" property set to be
11874  * GTK_TREE_VIEW_COLUMN_FIXED.
11875  *
11876  * Return value: The number of columns in @tree_view after appending.
11877  **/
11878 gint
11879 gtk_tree_view_append_column (GtkTreeView       *tree_view,
11880                              GtkTreeViewColumn *column)
11881 {
11882   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), -1);
11883   g_return_val_if_fail (GTK_IS_TREE_VIEW_COLUMN (column), -1);
11884   g_return_val_if_fail (gtk_tree_view_column_get_tree_view (column) == NULL, -1);
11885
11886   return gtk_tree_view_insert_column (tree_view, column, -1);
11887 }
11888
11889 void
11890 _gtk_tree_view_reset_header_styles (GtkTreeView *tree_view)
11891 {
11892   GList *columns;
11893
11894   for (columns = tree_view->priv->columns; columns; columns = columns->next)
11895     {
11896       GtkTreeViewColumn *column = columns->data;
11897       GtkWidget *header_widget;
11898
11899       if (gtk_tree_view_column_get_visible (column))
11900         continue;
11901
11902       header_widget = gtk_tree_view_column_get_widget (column);
11903
11904       if (!header_widget)
11905         header_widget = gtk_tree_view_column_get_button (column);
11906
11907       gtk_widget_reset_style (header_widget);
11908     }
11909 }
11910
11911
11912 /**
11913  * gtk_tree_view_remove_column:
11914  * @tree_view: A #GtkTreeView.
11915  * @column: The #GtkTreeViewColumn to remove.
11916  *
11917  * Removes @column from @tree_view.
11918  *
11919  * Return value: The number of columns in @tree_view after removing.
11920  **/
11921 gint
11922 gtk_tree_view_remove_column (GtkTreeView       *tree_view,
11923                              GtkTreeViewColumn *column)
11924 {
11925   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), -1);
11926   g_return_val_if_fail (GTK_IS_TREE_VIEW_COLUMN (column), -1);
11927   g_return_val_if_fail (gtk_tree_view_column_get_tree_view (column) == GTK_WIDGET (tree_view), -1);
11928
11929   if (tree_view->priv->focus_column == column)
11930     tree_view->priv->focus_column = NULL;
11931
11932   if (tree_view->priv->edited_column == column)
11933     {
11934       gtk_tree_view_stop_editing (tree_view, TRUE);
11935
11936       /* no need to, but just to be sure ... */
11937       tree_view->priv->edited_column = NULL;
11938     }
11939
11940   if (tree_view->priv->expander_column == column)
11941     tree_view->priv->expander_column = NULL;
11942
11943   g_signal_handlers_disconnect_by_func (column,
11944                                         G_CALLBACK (column_sizing_notify),
11945                                         tree_view);
11946
11947   _gtk_tree_view_column_unset_tree_view (column);
11948
11949   tree_view->priv->columns = g_list_remove (tree_view->priv->columns, column);
11950   tree_view->priv->n_columns--;
11951
11952   if (gtk_widget_get_realized (GTK_WIDGET (tree_view)))
11953     {
11954       GList *list;
11955
11956       _gtk_tree_view_column_unrealize_button (column);
11957       for (list = tree_view->priv->columns; list; list = list->next)
11958         {
11959           GtkTreeViewColumn *tmp_column;
11960
11961           tmp_column = GTK_TREE_VIEW_COLUMN (list->data);
11962           if (gtk_tree_view_column_get_visible (tmp_column))
11963             _gtk_tree_view_column_cell_set_dirty (tmp_column, TRUE);
11964         }
11965
11966       if (tree_view->priv->n_columns == 0 &&
11967           gtk_tree_view_get_headers_visible (tree_view))
11968         gdk_window_hide (tree_view->priv->header_window);
11969
11970       gtk_widget_queue_resize (GTK_WIDGET (tree_view));
11971     }
11972
11973   _gtk_tree_view_reset_header_styles (tree_view);
11974
11975   g_object_unref (column);
11976   g_signal_emit (tree_view, tree_view_signals[COLUMNS_CHANGED], 0);
11977
11978   return tree_view->priv->n_columns;
11979 }
11980
11981 /**
11982  * gtk_tree_view_insert_column:
11983  * @tree_view: A #GtkTreeView.
11984  * @column: The #GtkTreeViewColumn to be inserted.
11985  * @position: The position to insert @column in.
11986  *
11987  * This inserts the @column into the @tree_view at @position.  If @position is
11988  * -1, then the column is inserted at the end. If @tree_view has
11989  * "fixed_height" mode enabled, then @column must have its "sizing" property
11990  * set to be GTK_TREE_VIEW_COLUMN_FIXED.
11991  *
11992  * Return value: The number of columns in @tree_view after insertion.
11993  **/
11994 gint
11995 gtk_tree_view_insert_column (GtkTreeView       *tree_view,
11996                              GtkTreeViewColumn *column,
11997                              gint               position)
11998 {
11999   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), -1);
12000   g_return_val_if_fail (GTK_IS_TREE_VIEW_COLUMN (column), -1);
12001   g_return_val_if_fail (gtk_tree_view_column_get_tree_view (column) == NULL, -1);
12002
12003   if (tree_view->priv->fixed_height_mode)
12004     g_return_val_if_fail (gtk_tree_view_column_get_sizing (column)
12005                           == GTK_TREE_VIEW_COLUMN_FIXED, -1);
12006
12007   g_object_ref_sink (column);
12008
12009   if (tree_view->priv->n_columns == 0 &&
12010       gtk_widget_get_realized (GTK_WIDGET (tree_view)) &&
12011       gtk_tree_view_get_headers_visible (tree_view))
12012     {
12013       gdk_window_show (tree_view->priv->header_window);
12014     }
12015
12016   g_signal_connect (column, "notify::sizing",
12017                     G_CALLBACK (column_sizing_notify), tree_view);
12018
12019   tree_view->priv->columns = g_list_insert (tree_view->priv->columns,
12020                                             column, position);
12021   tree_view->priv->n_columns++;
12022
12023   _gtk_tree_view_column_set_tree_view (column, tree_view);
12024
12025   if (gtk_widget_get_realized (GTK_WIDGET (tree_view)))
12026     {
12027       GList *list;
12028
12029       _gtk_tree_view_column_realize_button (column);
12030
12031       for (list = tree_view->priv->columns; list; list = list->next)
12032         {
12033           column = GTK_TREE_VIEW_COLUMN (list->data);
12034           if (gtk_tree_view_column_get_visible (column))
12035             _gtk_tree_view_column_cell_set_dirty (column, TRUE);
12036         }
12037       gtk_widget_queue_resize (GTK_WIDGET (tree_view));
12038     }
12039
12040   _gtk_tree_view_reset_header_styles (tree_view);
12041   g_signal_emit (tree_view, tree_view_signals[COLUMNS_CHANGED], 0);
12042
12043   return tree_view->priv->n_columns;
12044 }
12045
12046 /**
12047  * gtk_tree_view_insert_column_with_attributes:
12048  * @tree_view: A #GtkTreeView
12049  * @position: The position to insert the new column in
12050  * @title: The title to set the header to
12051  * @cell: The #GtkCellRenderer
12052  * @...: A %NULL-terminated list of attributes
12053  *
12054  * Creates a new #GtkTreeViewColumn and inserts it into the @tree_view at
12055  * @position.  If @position is -1, then the newly created column is inserted at
12056  * the end.  The column is initialized with the attributes given. If @tree_view
12057  * has "fixed_height" mode enabled, then the new column will have its sizing
12058  * property set to be GTK_TREE_VIEW_COLUMN_FIXED.
12059  *
12060  * Return value: The number of columns in @tree_view after insertion.
12061  **/
12062 gint
12063 gtk_tree_view_insert_column_with_attributes (GtkTreeView     *tree_view,
12064                                              gint             position,
12065                                              const gchar     *title,
12066                                              GtkCellRenderer *cell,
12067                                              ...)
12068 {
12069   GtkTreeViewColumn *column;
12070   gchar *attribute;
12071   va_list args;
12072   gint column_id;
12073
12074   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), -1);
12075
12076   column = gtk_tree_view_column_new ();
12077   if (tree_view->priv->fixed_height_mode)
12078     gtk_tree_view_column_set_sizing (column, GTK_TREE_VIEW_COLUMN_FIXED);
12079
12080   gtk_tree_view_column_set_title (column, title);
12081   gtk_tree_view_column_pack_start (column, cell, TRUE);
12082
12083   va_start (args, cell);
12084
12085   attribute = va_arg (args, gchar *);
12086
12087   while (attribute != NULL)
12088     {
12089       column_id = va_arg (args, gint);
12090       gtk_tree_view_column_add_attribute (column, cell, attribute, column_id);
12091       attribute = va_arg (args, gchar *);
12092     }
12093
12094   va_end (args);
12095
12096   gtk_tree_view_insert_column (tree_view, column, position);
12097
12098   return tree_view->priv->n_columns;
12099 }
12100
12101 /**
12102  * gtk_tree_view_insert_column_with_data_func:
12103  * @tree_view: a #GtkTreeView
12104  * @position: Position to insert, -1 for append
12105  * @title: column title
12106  * @cell: cell renderer for column
12107  * @func: function to set attributes of cell renderer
12108  * @data: data for @func
12109  * @dnotify: destroy notifier for @data
12110  *
12111  * Convenience function that inserts a new column into the #GtkTreeView
12112  * with the given cell renderer and a #GtkCellDataFunc to set cell renderer
12113  * attributes (normally using data from the model). See also
12114  * gtk_tree_view_column_set_cell_data_func(), gtk_tree_view_column_pack_start().
12115  * If @tree_view has "fixed_height" mode enabled, then the new column will have its
12116  * "sizing" property set to be GTK_TREE_VIEW_COLUMN_FIXED.
12117  *
12118  * Return value: number of columns in the tree view post-insert
12119  **/
12120 gint
12121 gtk_tree_view_insert_column_with_data_func  (GtkTreeView               *tree_view,
12122                                              gint                       position,
12123                                              const gchar               *title,
12124                                              GtkCellRenderer           *cell,
12125                                              GtkTreeCellDataFunc        func,
12126                                              gpointer                   data,
12127                                              GDestroyNotify             dnotify)
12128 {
12129   GtkTreeViewColumn *column;
12130
12131   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), -1);
12132
12133   column = gtk_tree_view_column_new ();
12134   if (tree_view->priv->fixed_height_mode)
12135     gtk_tree_view_column_set_sizing (column, GTK_TREE_VIEW_COLUMN_FIXED);
12136
12137   gtk_tree_view_column_set_title (column, title);
12138   gtk_tree_view_column_pack_start (column, cell, TRUE);
12139   gtk_tree_view_column_set_cell_data_func (column, cell, func, data, dnotify);
12140
12141   gtk_tree_view_insert_column (tree_view, column, position);
12142
12143   return tree_view->priv->n_columns;
12144 }
12145
12146 /**
12147  * gtk_tree_view_get_column:
12148  * @tree_view: A #GtkTreeView.
12149  * @n: The position of the column, counting from 0.
12150  *
12151  * Gets the #GtkTreeViewColumn at the given position in the #tree_view.
12152  *
12153  * Return value: (transfer none): The #GtkTreeViewColumn, or %NULL if the
12154  *     position is outside the range of columns.
12155  **/
12156 GtkTreeViewColumn *
12157 gtk_tree_view_get_column (GtkTreeView *tree_view,
12158                           gint         n)
12159 {
12160   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), NULL);
12161
12162   if (n < 0 || n >= tree_view->priv->n_columns)
12163     return NULL;
12164
12165   if (tree_view->priv->columns == NULL)
12166     return NULL;
12167
12168   return GTK_TREE_VIEW_COLUMN (g_list_nth (tree_view->priv->columns, n)->data);
12169 }
12170
12171 /**
12172  * gtk_tree_view_get_columns:
12173  * @tree_view: A #GtkTreeView
12174  *
12175  * Returns a #GList of all the #GtkTreeViewColumn s currently in @tree_view.
12176  * The returned list must be freed with g_list_free ().
12177  *
12178  * Return value: (element-type GtkTreeViewColumn) (transfer container): A list of #GtkTreeViewColumn s
12179  **/
12180 GList *
12181 gtk_tree_view_get_columns (GtkTreeView *tree_view)
12182 {
12183   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), NULL);
12184
12185   return g_list_copy (tree_view->priv->columns);
12186 }
12187
12188 /**
12189  * gtk_tree_view_move_column_after:
12190  * @tree_view: A #GtkTreeView
12191  * @column: The #GtkTreeViewColumn to be moved.
12192  * @base_column: (allow-none): The #GtkTreeViewColumn to be moved relative to, or %NULL.
12193  *
12194  * Moves @column to be after to @base_column.  If @base_column is %NULL, then
12195  * @column is placed in the first position.
12196  **/
12197 void
12198 gtk_tree_view_move_column_after (GtkTreeView       *tree_view,
12199                                  GtkTreeViewColumn *column,
12200                                  GtkTreeViewColumn *base_column)
12201 {
12202   GList *column_list_el, *base_el = NULL;
12203
12204   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
12205
12206   column_list_el = g_list_find (tree_view->priv->columns, column);
12207   g_return_if_fail (column_list_el != NULL);
12208
12209   if (base_column)
12210     {
12211       base_el = g_list_find (tree_view->priv->columns, base_column);
12212       g_return_if_fail (base_el != NULL);
12213     }
12214
12215   if (column_list_el->prev == base_el)
12216     return;
12217
12218   tree_view->priv->columns = g_list_remove_link (tree_view->priv->columns, column_list_el);
12219   if (base_el == NULL)
12220     {
12221       column_list_el->prev = NULL;
12222       column_list_el->next = tree_view->priv->columns;
12223       if (column_list_el->next)
12224         column_list_el->next->prev = column_list_el;
12225       tree_view->priv->columns = column_list_el;
12226     }
12227   else
12228     {
12229       column_list_el->prev = base_el;
12230       column_list_el->next = base_el->next;
12231       if (column_list_el->next)
12232         column_list_el->next->prev = column_list_el;
12233       base_el->next = column_list_el;
12234     }
12235
12236   if (gtk_widget_get_realized (GTK_WIDGET (tree_view)))
12237     {
12238       gtk_widget_queue_resize (GTK_WIDGET (tree_view));
12239       gtk_tree_view_size_allocate_columns (GTK_WIDGET (tree_view), NULL);
12240     }
12241
12242   _gtk_tree_view_reset_header_styles (tree_view);
12243   g_signal_emit (tree_view, tree_view_signals[COLUMNS_CHANGED], 0);
12244 }
12245
12246 /**
12247  * gtk_tree_view_set_expander_column:
12248  * @tree_view: A #GtkTreeView
12249  * @column: %NULL, or the column to draw the expander arrow at.
12250  *
12251  * Sets the column to draw the expander arrow at. It must be in @tree_view.
12252  * If @column is %NULL, then the expander arrow is always at the first
12253  * visible column.
12254  *
12255  * If you do not want expander arrow to appear in your tree, set the
12256  * expander column to a hidden column.
12257  **/
12258 void
12259 gtk_tree_view_set_expander_column (GtkTreeView       *tree_view,
12260                                    GtkTreeViewColumn *column)
12261 {
12262   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
12263   g_return_if_fail (column == NULL || GTK_IS_TREE_VIEW_COLUMN (column));
12264
12265   if (tree_view->priv->expander_column != column)
12266     {
12267       GList *list;
12268
12269       if (column)
12270         {
12271           /* Confirm that column is in tree_view */
12272           for (list = tree_view->priv->columns; list; list = list->next)
12273             if (list->data == column)
12274               break;
12275           g_return_if_fail (list != NULL);
12276         }
12277
12278       tree_view->priv->expander_column = column;
12279       g_object_notify (G_OBJECT (tree_view), "expander-column");
12280     }
12281 }
12282
12283 /**
12284  * gtk_tree_view_get_expander_column:
12285  * @tree_view: A #GtkTreeView
12286  *
12287  * Returns the column that is the current expander column.
12288  * This column has the expander arrow drawn next to it.
12289  *
12290  * Return value: (transfer none): The expander column.
12291  **/
12292 GtkTreeViewColumn *
12293 gtk_tree_view_get_expander_column (GtkTreeView *tree_view)
12294 {
12295   GList *list;
12296
12297   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), NULL);
12298
12299   for (list = tree_view->priv->columns; list; list = list->next)
12300     if (gtk_tree_view_is_expander_column (tree_view, GTK_TREE_VIEW_COLUMN (list->data)))
12301       return (GtkTreeViewColumn *) list->data;
12302   return NULL;
12303 }
12304
12305
12306 /**
12307  * gtk_tree_view_set_column_drag_function:
12308  * @tree_view: A #GtkTreeView.
12309  * @func: (allow-none): A function to determine which columns are reorderable, or %NULL.
12310  * @user_data: (allow-none): User data to be passed to @func, or %NULL
12311  * @destroy: (allow-none): Destroy notifier for @user_data, or %NULL
12312  *
12313  * Sets a user function for determining where a column may be dropped when
12314  * dragged.  This function is called on every column pair in turn at the
12315  * beginning of a column drag to determine where a drop can take place.  The
12316  * arguments passed to @func are: the @tree_view, the #GtkTreeViewColumn being
12317  * dragged, the two #GtkTreeViewColumn s determining the drop spot, and
12318  * @user_data.  If either of the #GtkTreeViewColumn arguments for the drop spot
12319  * are %NULL, then they indicate an edge.  If @func is set to be %NULL, then
12320  * @tree_view reverts to the default behavior of allowing all columns to be
12321  * dropped everywhere.
12322  **/
12323 void
12324 gtk_tree_view_set_column_drag_function (GtkTreeView               *tree_view,
12325                                         GtkTreeViewColumnDropFunc  func,
12326                                         gpointer                   user_data,
12327                                         GDestroyNotify             destroy)
12328 {
12329   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
12330
12331   if (tree_view->priv->column_drop_func_data_destroy)
12332     tree_view->priv->column_drop_func_data_destroy (tree_view->priv->column_drop_func_data);
12333
12334   tree_view->priv->column_drop_func = func;
12335   tree_view->priv->column_drop_func_data = user_data;
12336   tree_view->priv->column_drop_func_data_destroy = destroy;
12337 }
12338
12339 /**
12340  * gtk_tree_view_scroll_to_point:
12341  * @tree_view: a #GtkTreeView
12342  * @tree_x: X coordinate of new top-left pixel of visible area, or -1
12343  * @tree_y: Y coordinate of new top-left pixel of visible area, or -1
12344  *
12345  * Scrolls the tree view such that the top-left corner of the visible
12346  * area is @tree_x, @tree_y, where @tree_x and @tree_y are specified
12347  * in tree coordinates.  The @tree_view must be realized before
12348  * this function is called.  If it isn't, you probably want to be
12349  * using gtk_tree_view_scroll_to_cell().
12350  *
12351  * If either @tree_x or @tree_y are -1, then that direction isn't scrolled.
12352  **/
12353 void
12354 gtk_tree_view_scroll_to_point (GtkTreeView *tree_view,
12355                                gint         tree_x,
12356                                gint         tree_y)
12357 {
12358   GtkAdjustment *hadj;
12359   GtkAdjustment *vadj;
12360
12361   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
12362   g_return_if_fail (gtk_widget_get_realized (GTK_WIDGET (tree_view)));
12363
12364   hadj = tree_view->priv->hadjustment;
12365   vadj = tree_view->priv->vadjustment;
12366
12367   if (tree_x != -1)
12368     gtk_adjustment_set_value (hadj, tree_x);
12369   if (tree_y != -1)
12370     gtk_adjustment_set_value (vadj, tree_y);
12371 }
12372
12373 /**
12374  * gtk_tree_view_scroll_to_cell:
12375  * @tree_view: A #GtkTreeView.
12376  * @path: (allow-none): The path of the row to move to, or %NULL.
12377  * @column: (allow-none): The #GtkTreeViewColumn to move horizontally to, or %NULL.
12378  * @use_align: whether to use alignment arguments, or %FALSE.
12379  * @row_align: The vertical alignment of the row specified by @path.
12380  * @col_align: The horizontal alignment of the column specified by @column.
12381  *
12382  * Moves the alignments of @tree_view to the position specified by @column and
12383  * @path.  If @column is %NULL, then no horizontal scrolling occurs.  Likewise,
12384  * if @path is %NULL no vertical scrolling occurs.  At a minimum, one of @column
12385  * or @path need to be non-%NULL.  @row_align determines where the row is
12386  * placed, and @col_align determines where @column is placed.  Both are expected
12387  * to be between 0.0 and 1.0. 0.0 means left/top alignment, 1.0 means
12388  * right/bottom alignment, 0.5 means center.
12389  *
12390  * If @use_align is %FALSE, then the alignment arguments are ignored, and the
12391  * tree does the minimum amount of work to scroll the cell onto the screen.
12392  * This means that the cell will be scrolled to the edge closest to its current
12393  * position.  If the cell is currently visible on the screen, nothing is done.
12394  *
12395  * This function only works if the model is set, and @path is a valid row on the
12396  * model.  If the model changes before the @tree_view is realized, the centered
12397  * path will be modified to reflect this change.
12398  **/
12399 void
12400 gtk_tree_view_scroll_to_cell (GtkTreeView       *tree_view,
12401                               GtkTreePath       *path,
12402                               GtkTreeViewColumn *column,
12403                               gboolean           use_align,
12404                               gfloat             row_align,
12405                               gfloat             col_align)
12406 {
12407   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
12408   g_return_if_fail (tree_view->priv->model != NULL);
12409   g_return_if_fail (tree_view->priv->tree != NULL);
12410   g_return_if_fail (row_align >= 0.0 && row_align <= 1.0);
12411   g_return_if_fail (col_align >= 0.0 && col_align <= 1.0);
12412   g_return_if_fail (path != NULL || column != NULL);
12413
12414 #if 0
12415   g_print ("gtk_tree_view_scroll_to_cell:\npath: %s\ncolumn: %s\nuse_align: %d\nrow_align: %f\ncol_align: %f\n",
12416            gtk_tree_path_to_string (path), column?"non-null":"null", use_align, row_align, col_align);
12417 #endif
12418   row_align = CLAMP (row_align, 0.0, 1.0);
12419   col_align = CLAMP (col_align, 0.0, 1.0);
12420
12421
12422   /* Note: Despite the benefits that come from having one code path for the
12423    * scrolling code, we short-circuit validate_visible_area's immplementation as
12424    * it is much slower than just going to the point.
12425    */
12426   if (!gtk_widget_get_visible (GTK_WIDGET (tree_view)) ||
12427       !gtk_widget_get_realized (GTK_WIDGET (tree_view)) ||
12428       _gtk_widget_get_alloc_needed (GTK_WIDGET (tree_view)) ||
12429       GTK_RBNODE_FLAG_SET (tree_view->priv->tree->root, GTK_RBNODE_DESCENDANTS_INVALID))
12430     {
12431       if (tree_view->priv->scroll_to_path)
12432         gtk_tree_row_reference_free (tree_view->priv->scroll_to_path);
12433
12434       tree_view->priv->scroll_to_path = NULL;
12435       tree_view->priv->scroll_to_column = NULL;
12436
12437       if (path)
12438         tree_view->priv->scroll_to_path = gtk_tree_row_reference_new_proxy (G_OBJECT (tree_view), tree_view->priv->model, path);
12439       if (column)
12440         tree_view->priv->scroll_to_column = column;
12441       tree_view->priv->scroll_to_use_align = use_align;
12442       tree_view->priv->scroll_to_row_align = row_align;
12443       tree_view->priv->scroll_to_col_align = col_align;
12444
12445       install_presize_handler (tree_view);
12446     }
12447   else
12448     {
12449       GdkRectangle cell_rect;
12450       GdkRectangle vis_rect;
12451       gint dest_x, dest_y;
12452
12453       gtk_tree_view_get_background_area (tree_view, path, column, &cell_rect);
12454       gtk_tree_view_get_visible_rect (tree_view, &vis_rect);
12455
12456       cell_rect.y = TREE_WINDOW_Y_TO_RBTREE_Y (tree_view, cell_rect.y);
12457
12458       dest_x = vis_rect.x;
12459       dest_y = vis_rect.y;
12460
12461       if (column)
12462         {
12463           if (use_align)
12464             {
12465               dest_x = cell_rect.x - ((vis_rect.width - cell_rect.width) * col_align);
12466             }
12467           else
12468             {
12469               if (cell_rect.x < vis_rect.x)
12470                 dest_x = cell_rect.x;
12471               if (cell_rect.x + cell_rect.width > vis_rect.x + vis_rect.width)
12472                 dest_x = cell_rect.x + cell_rect.width - vis_rect.width;
12473             }
12474         }
12475
12476       if (path)
12477         {
12478           if (use_align)
12479             {
12480               dest_y = cell_rect.y - ((vis_rect.height - cell_rect.height) * row_align);
12481               dest_y = MAX (dest_y, 0);
12482             }
12483           else
12484             {
12485               if (cell_rect.y < vis_rect.y)
12486                 dest_y = cell_rect.y;
12487               if (cell_rect.y + cell_rect.height > vis_rect.y + vis_rect.height)
12488                 dest_y = cell_rect.y + cell_rect.height - vis_rect.height;
12489             }
12490         }
12491
12492       gtk_tree_view_scroll_to_point (tree_view, dest_x, dest_y);
12493     }
12494 }
12495
12496 /**
12497  * gtk_tree_view_row_activated:
12498  * @tree_view: A #GtkTreeView
12499  * @path: The #GtkTreePath to be activated.
12500  * @column: The #GtkTreeViewColumn to be activated.
12501  *
12502  * Activates the cell determined by @path and @column.
12503  **/
12504 void
12505 gtk_tree_view_row_activated (GtkTreeView       *tree_view,
12506                              GtkTreePath       *path,
12507                              GtkTreeViewColumn *column)
12508 {
12509   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
12510
12511   g_signal_emit (tree_view, tree_view_signals[ROW_ACTIVATED], 0, path, column);
12512 }
12513
12514
12515 static void
12516 gtk_tree_view_expand_all_emission_helper (GtkRBTree *tree,
12517                                           GtkRBNode *node,
12518                                           gpointer   data)
12519 {
12520   GtkTreeView *tree_view = data;
12521
12522   if ((node->flags & GTK_RBNODE_IS_PARENT) == GTK_RBNODE_IS_PARENT &&
12523       node->children)
12524     {
12525       GtkTreePath *path;
12526       GtkTreeIter iter;
12527
12528       path = _gtk_tree_view_find_path (tree_view, tree, node);
12529       gtk_tree_model_get_iter (tree_view->priv->model, &iter, path);
12530
12531       g_signal_emit (tree_view, tree_view_signals[ROW_EXPANDED], 0, &iter, path);
12532
12533       gtk_tree_path_free (path);
12534     }
12535
12536   if (node->children)
12537     _gtk_rbtree_traverse (node->children,
12538                           node->children->root,
12539                           G_PRE_ORDER,
12540                           gtk_tree_view_expand_all_emission_helper,
12541                           tree_view);
12542 }
12543
12544 /**
12545  * gtk_tree_view_expand_all:
12546  * @tree_view: A #GtkTreeView.
12547  *
12548  * Recursively expands all nodes in the @tree_view.
12549  **/
12550 void
12551 gtk_tree_view_expand_all (GtkTreeView *tree_view)
12552 {
12553   GtkTreePath *path;
12554   GtkRBTree *tree;
12555   GtkRBNode *node;
12556
12557   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
12558
12559   if (tree_view->priv->tree == NULL)
12560     return;
12561
12562   path = gtk_tree_path_new_first ();
12563   _gtk_tree_view_find_node (tree_view, path, &tree, &node);
12564
12565   while (node)
12566     {
12567       gtk_tree_view_real_expand_row (tree_view, path, tree, node, TRUE, FALSE);
12568       node = _gtk_rbtree_next (tree, node);
12569       gtk_tree_path_next (path);
12570   }
12571
12572   gtk_tree_path_free (path);
12573 }
12574
12575 /**
12576  * gtk_tree_view_collapse_all:
12577  * @tree_view: A #GtkTreeView.
12578  *
12579  * Recursively collapses all visible, expanded nodes in @tree_view.
12580  **/
12581 void
12582 gtk_tree_view_collapse_all (GtkTreeView *tree_view)
12583 {
12584   GtkRBTree *tree;
12585   GtkRBNode *node;
12586   GtkTreePath *path;
12587   gint *indices;
12588
12589   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
12590
12591   if (tree_view->priv->tree == NULL)
12592     return;
12593
12594   path = gtk_tree_path_new ();
12595   gtk_tree_path_down (path);
12596   indices = gtk_tree_path_get_indices (path);
12597
12598   tree = tree_view->priv->tree;
12599   node = tree->root;
12600   while (node && node->left != tree->nil)
12601     node = node->left;
12602
12603   while (node)
12604     {
12605       if (node->children)
12606         gtk_tree_view_real_collapse_row (tree_view, path, tree, node, FALSE);
12607       indices[0]++;
12608       node = _gtk_rbtree_next (tree, node);
12609     }
12610
12611   gtk_tree_path_free (path);
12612 }
12613
12614 /**
12615  * gtk_tree_view_expand_to_path:
12616  * @tree_view: A #GtkTreeView.
12617  * @path: path to a row.
12618  *
12619  * Expands the row at @path. This will also expand all parent rows of
12620  * @path as necessary.
12621  *
12622  * Since: 2.2
12623  **/
12624 void
12625 gtk_tree_view_expand_to_path (GtkTreeView *tree_view,
12626                               GtkTreePath *path)
12627 {
12628   gint i, depth;
12629   gint *indices;
12630   GtkTreePath *tmp;
12631
12632   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
12633   g_return_if_fail (path != NULL);
12634
12635   depth = gtk_tree_path_get_depth (path);
12636   indices = gtk_tree_path_get_indices (path);
12637
12638   tmp = gtk_tree_path_new ();
12639   g_return_if_fail (tmp != NULL);
12640
12641   for (i = 0; i < depth; i++)
12642     {
12643       gtk_tree_path_append_index (tmp, indices[i]);
12644       gtk_tree_view_expand_row (tree_view, tmp, FALSE);
12645     }
12646
12647   gtk_tree_path_free (tmp);
12648 }
12649
12650 /* FIXME the bool return values for expand_row and collapse_row are
12651  * not analagous; they should be TRUE if the row had children and
12652  * was not already in the requested state.
12653  */
12654
12655
12656 static gboolean
12657 gtk_tree_view_real_expand_row (GtkTreeView *tree_view,
12658                                GtkTreePath *path,
12659                                GtkRBTree   *tree,
12660                                GtkRBNode   *node,
12661                                gboolean     open_all,
12662                                gboolean     animate)
12663 {
12664   GtkTreeIter iter;
12665   GtkTreeIter temp;
12666   gboolean expand;
12667
12668   if (animate)
12669     g_object_get (gtk_widget_get_settings (GTK_WIDGET (tree_view)),
12670                   "gtk-enable-animations", &animate,
12671                   NULL);
12672
12673   remove_auto_expand_timeout (tree_view);
12674
12675   if (node->children && !open_all)
12676     return FALSE;
12677
12678   if (! GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_PARENT))
12679     return FALSE;
12680
12681   gtk_tree_model_get_iter (tree_view->priv->model, &iter, path);
12682   if (! gtk_tree_model_iter_has_child (tree_view->priv->model, &iter))
12683     return FALSE;
12684
12685
12686    if (node->children && open_all)
12687     {
12688       gboolean retval = FALSE;
12689       GtkTreePath *tmp_path = gtk_tree_path_copy (path);
12690
12691       gtk_tree_path_append_index (tmp_path, 0);
12692       tree = node->children;
12693       node = tree->root;
12694       while (node->left != tree->nil)
12695         node = node->left;
12696       /* try to expand the children */
12697       do
12698         {
12699          gboolean t;
12700          t = gtk_tree_view_real_expand_row (tree_view, tmp_path, tree, node,
12701                                             TRUE, animate);
12702          if (t)
12703            retval = TRUE;
12704
12705          gtk_tree_path_next (tmp_path);
12706          node = _gtk_rbtree_next (tree, node);
12707        }
12708       while (node != NULL);
12709
12710       gtk_tree_path_free (tmp_path);
12711
12712       return retval;
12713     }
12714
12715   g_signal_emit (tree_view, tree_view_signals[TEST_EXPAND_ROW], 0, &iter, path, &expand);
12716
12717   if (!gtk_tree_model_iter_has_child (tree_view->priv->model, &iter))
12718     return FALSE;
12719
12720   if (expand)
12721     return FALSE;
12722
12723   node->children = _gtk_rbtree_new ();
12724   node->children->parent_tree = tree;
12725   node->children->parent_node = node;
12726
12727   gtk_tree_model_iter_children (tree_view->priv->model, &temp, &iter);
12728
12729   gtk_tree_view_build_tree (tree_view,
12730                             node->children,
12731                             &temp,
12732                             gtk_tree_path_get_depth (path) + 1,
12733                             open_all);
12734
12735   if (animate)
12736     {
12737       GtkStyleContext *context;
12738
12739       context = gtk_widget_get_style_context (GTK_WIDGET (tree_view));
12740
12741       gtk_style_context_save (context);
12742       gtk_style_context_add_class (context, GTK_STYLE_CLASS_EXPANDER);
12743
12744       gtk_style_context_notify_state_change (context, tree_view->priv->bin_window,
12745                                              node, GTK_STATE_ACTIVE, TRUE);
12746
12747       _gtk_style_context_invalidate_animation_areas (context);
12748       gtk_style_context_restore (context);
12749     }
12750
12751   install_presize_handler (tree_view);
12752
12753   g_signal_emit (tree_view, tree_view_signals[ROW_EXPANDED], 0, &iter, path);
12754   if (open_all && node->children)
12755     {
12756       _gtk_rbtree_traverse (node->children,
12757                             node->children->root,
12758                             G_PRE_ORDER,
12759                             gtk_tree_view_expand_all_emission_helper,
12760                             tree_view);
12761     }
12762   return TRUE;
12763 }
12764
12765
12766 /**
12767  * gtk_tree_view_expand_row:
12768  * @tree_view: a #GtkTreeView
12769  * @path: path to a row
12770  * @open_all: whether to recursively expand, or just expand immediate children
12771  *
12772  * Opens the row so its children are visible.
12773  *
12774  * Return value: %TRUE if the row existed and had children
12775  **/
12776 gboolean
12777 gtk_tree_view_expand_row (GtkTreeView *tree_view,
12778                           GtkTreePath *path,
12779                           gboolean     open_all)
12780 {
12781   GtkRBTree *tree;
12782   GtkRBNode *node;
12783
12784   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), FALSE);
12785   g_return_val_if_fail (tree_view->priv->model != NULL, FALSE);
12786   g_return_val_if_fail (path != NULL, FALSE);
12787
12788   if (_gtk_tree_view_find_node (tree_view,
12789                                 path,
12790                                 &tree,
12791                                 &node))
12792     return FALSE;
12793
12794   if (tree != NULL)
12795     return gtk_tree_view_real_expand_row (tree_view, path, tree, node, open_all, FALSE);
12796   else
12797     return FALSE;
12798 }
12799
12800 static gboolean
12801 gtk_tree_view_real_collapse_row (GtkTreeView *tree_view,
12802                                  GtkTreePath *path,
12803                                  GtkRBTree   *tree,
12804                                  GtkRBNode   *node,
12805                                  gboolean     animate)
12806 {
12807   GtkTreeIter iter;
12808   GtkTreeIter children;
12809   gboolean collapse;
12810   gint x, y;
12811   GList *list;
12812   GdkWindow *child;
12813
12814   if (animate)
12815     g_object_get (gtk_widget_get_settings (GTK_WIDGET (tree_view)),
12816                   "gtk-enable-animations", &animate,
12817                   NULL);
12818
12819   remove_auto_expand_timeout (tree_view);
12820
12821   if (node->children == NULL)
12822     return FALSE;
12823   gtk_tree_model_get_iter (tree_view->priv->model, &iter, path);
12824
12825   g_signal_emit (tree_view, tree_view_signals[TEST_COLLAPSE_ROW], 0, &iter, path, &collapse);
12826
12827   if (collapse)
12828     return FALSE;
12829
12830   /* if the prelighted node is a child of us, we want to unprelight it.  We have
12831    * a chance to prelight the correct node below */
12832
12833   if (tree_view->priv->prelight_tree)
12834     {
12835       GtkRBTree *parent_tree;
12836       GtkRBNode *parent_node;
12837
12838       parent_tree = tree_view->priv->prelight_tree->parent_tree;
12839       parent_node = tree_view->priv->prelight_tree->parent_node;
12840       while (parent_tree)
12841         {
12842           if (parent_tree == tree && parent_node == node)
12843             {
12844               ensure_unprelighted (tree_view);
12845               break;
12846             }
12847           parent_node = parent_tree->parent_node;
12848           parent_tree = parent_tree->parent_tree;
12849         }
12850     }
12851
12852   TREE_VIEW_INTERNAL_ASSERT (gtk_tree_model_iter_children (tree_view->priv->model, &children, &iter), FALSE);
12853
12854   for (list = tree_view->priv->columns; list; list = list->next)
12855     {
12856       GtkTreeViewColumn *column = list->data;
12857
12858       if (gtk_tree_view_column_get_visible (column) == FALSE)
12859         continue;
12860       if (gtk_tree_view_column_get_sizing (column) == GTK_TREE_VIEW_COLUMN_AUTOSIZE)
12861         _gtk_tree_view_column_cell_set_dirty (column, TRUE);
12862     }
12863
12864   if (tree_view->priv->destroy_count_func)
12865     {
12866       GtkTreePath *child_path;
12867       gint child_count = 0;
12868       child_path = gtk_tree_path_copy (path);
12869       gtk_tree_path_down (child_path);
12870       if (node->children)
12871         _gtk_rbtree_traverse (node->children, node->children->root, G_POST_ORDER, count_children_helper, &child_count);
12872       tree_view->priv->destroy_count_func (tree_view, child_path, child_count, tree_view->priv->destroy_count_data);
12873       gtk_tree_path_free (child_path);
12874     }
12875
12876   if (gtk_tree_row_reference_valid (tree_view->priv->cursor))
12877     {
12878       GtkTreePath *cursor_path = gtk_tree_row_reference_get_path (tree_view->priv->cursor);
12879
12880       if (gtk_tree_path_is_ancestor (path, cursor_path))
12881         {
12882           gtk_tree_row_reference_free (tree_view->priv->cursor);
12883           tree_view->priv->cursor = gtk_tree_row_reference_new_proxy (G_OBJECT (tree_view),
12884                                                                       tree_view->priv->model,
12885                                                                       path);
12886         }
12887       gtk_tree_path_free (cursor_path);
12888     }
12889
12890   if (gtk_tree_row_reference_valid (tree_view->priv->anchor))
12891     {
12892       GtkTreePath *anchor_path = gtk_tree_row_reference_get_path (tree_view->priv->anchor);
12893       if (gtk_tree_path_is_ancestor (path, anchor_path))
12894         {
12895           gtk_tree_row_reference_free (tree_view->priv->anchor);
12896           tree_view->priv->anchor = NULL;
12897         }
12898       gtk_tree_path_free (anchor_path);
12899     }
12900
12901   /* Stop a pending double click */
12902   tree_view->priv->last_button_x = -1;
12903   tree_view->priv->last_button_y = -1;
12904
12905   _gtk_tree_view_accessible_remove (tree_view, node->children, NULL);
12906
12907   if (gtk_tree_view_unref_and_check_selection_tree (tree_view, node->children))
12908     {
12909       _gtk_rbtree_remove (node->children);
12910       g_signal_emit_by_name (tree_view->priv->selection, "changed");
12911     }
12912   else
12913     _gtk_rbtree_remove (node->children);
12914
12915   if (animate)
12916     {
12917       GtkStyleContext *context;
12918
12919       context = gtk_widget_get_style_context (GTK_WIDGET (tree_view));
12920
12921       gtk_style_context_save (context);
12922       gtk_style_context_add_class (context, GTK_STYLE_CLASS_EXPANDER);
12923
12924       gtk_style_context_notify_state_change (context, tree_view->priv->bin_window,
12925                                              node, GTK_STATE_ACTIVE, FALSE);
12926
12927       _gtk_style_context_invalidate_animation_areas (context);
12928       gtk_style_context_restore (context);
12929     }
12930
12931   if (gtk_widget_get_mapped (GTK_WIDGET (tree_view)))
12932     {
12933       gtk_widget_queue_resize (GTK_WIDGET (tree_view));
12934     }
12935
12936   g_signal_emit (tree_view, tree_view_signals[ROW_COLLAPSED], 0, &iter, path);
12937
12938   if (gtk_widget_get_mapped (GTK_WIDGET (tree_view)))
12939     {
12940       /* now that we've collapsed all rows, we want to try to set the prelight
12941        * again. To do this, we fake a motion event and send it to ourselves. */
12942
12943       child = gdk_window_get_device_position (gdk_window_get_parent (tree_view->priv->bin_window),
12944                                               gdk_device_manager_get_client_pointer (
12945                                                 gdk_display_get_device_manager (
12946                                                   gtk_widget_get_display (GTK_WIDGET (tree_view)))),
12947                                               &x, &y, NULL);
12948       if (child == tree_view->priv->bin_window)
12949         {
12950           GdkEventMotion event;
12951           gint child_x, child_y;
12952
12953           gdk_window_get_position (child, &child_x, &child_y);
12954
12955           event.window = tree_view->priv->bin_window;
12956           event.x = x - child_x;
12957           event.y = y - child_y;
12958
12959           /* despite the fact this isn't a real event, I'm almost positive it will
12960            * never trigger a drag event.  maybe_drag is the only function that uses
12961            * more than just event.x and event.y. */
12962           gtk_tree_view_motion_bin_window (GTK_WIDGET (tree_view), &event);
12963         }
12964     }
12965
12966   return TRUE;
12967 }
12968
12969 /**
12970  * gtk_tree_view_collapse_row:
12971  * @tree_view: a #GtkTreeView
12972  * @path: path to a row in the @tree_view
12973  *
12974  * Collapses a row (hides its child rows, if they exist).
12975  *
12976  * Return value: %TRUE if the row was collapsed.
12977  **/
12978 gboolean
12979 gtk_tree_view_collapse_row (GtkTreeView *tree_view,
12980                             GtkTreePath *path)
12981 {
12982   GtkRBTree *tree;
12983   GtkRBNode *node;
12984
12985   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), FALSE);
12986   g_return_val_if_fail (tree_view->priv->tree != NULL, FALSE);
12987   g_return_val_if_fail (path != NULL, FALSE);
12988
12989   if (_gtk_tree_view_find_node (tree_view,
12990                                 path,
12991                                 &tree,
12992                                 &node))
12993     return FALSE;
12994
12995   if (tree == NULL || node->children == NULL)
12996     return FALSE;
12997
12998   return gtk_tree_view_real_collapse_row (tree_view, path, tree, node, FALSE);
12999 }
13000
13001 static void
13002 gtk_tree_view_map_expanded_rows_helper (GtkTreeView            *tree_view,
13003                                         GtkRBTree              *tree,
13004                                         GtkTreePath            *path,
13005                                         GtkTreeViewMappingFunc  func,
13006                                         gpointer                user_data)
13007 {
13008   GtkRBNode *node;
13009
13010   if (tree == NULL || tree->root == NULL)
13011     return;
13012
13013   node = tree->root;
13014
13015   while (node && node->left != tree->nil)
13016     node = node->left;
13017
13018   while (node)
13019     {
13020       if (node->children)
13021         {
13022           (* func) (tree_view, path, user_data);
13023           gtk_tree_path_down (path);
13024           gtk_tree_view_map_expanded_rows_helper (tree_view, node->children, path, func, user_data);
13025           gtk_tree_path_up (path);
13026         }
13027       gtk_tree_path_next (path);
13028       node = _gtk_rbtree_next (tree, node);
13029     }
13030 }
13031
13032 /**
13033  * gtk_tree_view_map_expanded_rows:
13034  * @tree_view: A #GtkTreeView
13035  * @func: (scope call): A function to be called
13036  * @data: User data to be passed to the function.
13037  *
13038  * Calls @func on all expanded rows.
13039  **/
13040 void
13041 gtk_tree_view_map_expanded_rows (GtkTreeView            *tree_view,
13042                                  GtkTreeViewMappingFunc  func,
13043                                  gpointer                user_data)
13044 {
13045   GtkTreePath *path;
13046
13047   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
13048   g_return_if_fail (func != NULL);
13049
13050   path = gtk_tree_path_new_first ();
13051
13052   gtk_tree_view_map_expanded_rows_helper (tree_view,
13053                                           tree_view->priv->tree,
13054                                           path, func, user_data);
13055
13056   gtk_tree_path_free (path);
13057 }
13058
13059 /**
13060  * gtk_tree_view_row_expanded:
13061  * @tree_view: A #GtkTreeView.
13062  * @path: A #GtkTreePath to test expansion state.
13063  *
13064  * Returns %TRUE if the node pointed to by @path is expanded in @tree_view.
13065  *
13066  * Return value: %TRUE if #path is expanded.
13067  **/
13068 gboolean
13069 gtk_tree_view_row_expanded (GtkTreeView *tree_view,
13070                             GtkTreePath *path)
13071 {
13072   GtkRBTree *tree;
13073   GtkRBNode *node;
13074
13075   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), FALSE);
13076   g_return_val_if_fail (path != NULL, FALSE);
13077
13078   _gtk_tree_view_find_node (tree_view, path, &tree, &node);
13079
13080   if (node == NULL)
13081     return FALSE;
13082
13083   return (node->children != NULL);
13084 }
13085
13086 /**
13087  * gtk_tree_view_get_reorderable:
13088  * @tree_view: a #GtkTreeView
13089  *
13090  * Retrieves whether the user can reorder the tree via drag-and-drop. See
13091  * gtk_tree_view_set_reorderable().
13092  *
13093  * Return value: %TRUE if the tree can be reordered.
13094  **/
13095 gboolean
13096 gtk_tree_view_get_reorderable (GtkTreeView *tree_view)
13097 {
13098   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), FALSE);
13099
13100   return tree_view->priv->reorderable;
13101 }
13102
13103 /**
13104  * gtk_tree_view_set_reorderable:
13105  * @tree_view: A #GtkTreeView.
13106  * @reorderable: %TRUE, if the tree can be reordered.
13107  *
13108  * This function is a convenience function to allow you to reorder
13109  * models that support the #GtkTreeDragSourceIface and the
13110  * #GtkTreeDragDestIface.  Both #GtkTreeStore and #GtkListStore support
13111  * these.  If @reorderable is %TRUE, then the user can reorder the
13112  * model by dragging and dropping rows. The developer can listen to
13113  * these changes by connecting to the model's row_inserted and
13114  * row_deleted signals. The reordering is implemented by setting up
13115  * the tree view as a drag source and destination. Therefore, drag and
13116  * drop can not be used in a reorderable view for any other purpose.
13117  *
13118  * This function does not give you any degree of control over the order -- any
13119  * reordering is allowed.  If more control is needed, you should probably
13120  * handle drag and drop manually.
13121  **/
13122 void
13123 gtk_tree_view_set_reorderable (GtkTreeView *tree_view,
13124                                gboolean     reorderable)
13125 {
13126   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
13127
13128   reorderable = reorderable != FALSE;
13129
13130   if (tree_view->priv->reorderable == reorderable)
13131     return;
13132
13133   if (reorderable)
13134     {
13135       const GtkTargetEntry row_targets[] = {
13136         { "GTK_TREE_MODEL_ROW", GTK_TARGET_SAME_WIDGET, 0 }
13137       };
13138
13139       gtk_tree_view_enable_model_drag_source (tree_view,
13140                                               GDK_BUTTON1_MASK,
13141                                               row_targets,
13142                                               G_N_ELEMENTS (row_targets),
13143                                               GDK_ACTION_MOVE);
13144       gtk_tree_view_enable_model_drag_dest (tree_view,
13145                                             row_targets,
13146                                             G_N_ELEMENTS (row_targets),
13147                                             GDK_ACTION_MOVE);
13148     }
13149   else
13150     {
13151       gtk_tree_view_unset_rows_drag_source (tree_view);
13152       gtk_tree_view_unset_rows_drag_dest (tree_view);
13153     }
13154
13155   tree_view->priv->reorderable = reorderable;
13156
13157   g_object_notify (G_OBJECT (tree_view), "reorderable");
13158 }
13159
13160 static void
13161 gtk_tree_view_real_set_cursor (GtkTreeView     *tree_view,
13162                                GtkTreePath     *path,
13163                                gboolean         clear_and_select,
13164                                gboolean         clamp_node)
13165 {
13166   GtkRBTree *tree = NULL;
13167   GtkRBNode *node = NULL;
13168
13169   if (gtk_tree_row_reference_valid (tree_view->priv->cursor))
13170     {
13171       GtkTreePath *cursor_path;
13172       cursor_path = gtk_tree_row_reference_get_path (tree_view->priv->cursor);
13173       gtk_tree_view_queue_draw_path (tree_view, cursor_path, NULL);
13174       gtk_tree_path_free (cursor_path);
13175     }
13176
13177   gtk_tree_row_reference_free (tree_view->priv->cursor);
13178   tree_view->priv->cursor = NULL;
13179
13180   /* One cannot set the cursor on a separator.   Also, if
13181    * _gtk_tree_view_find_node returns TRUE, it ran out of tree
13182    * before finding the tree and node belonging to path.  The
13183    * path maps to a non-existing path and we will silently bail out.
13184    * We unset tree and node to avoid further processing.
13185    */
13186   if (!row_is_separator (tree_view, NULL, path)
13187       && _gtk_tree_view_find_node (tree_view, path, &tree, &node) == FALSE)
13188     {
13189       tree_view->priv->cursor =
13190           gtk_tree_row_reference_new_proxy (G_OBJECT (tree_view),
13191                                             tree_view->priv->model,
13192                                             path);
13193     }
13194   else
13195     {
13196       tree = NULL;
13197       node = NULL;
13198     }
13199
13200   if (tree != NULL)
13201     {
13202       GtkRBTree *new_tree = NULL;
13203       GtkRBNode *new_node = NULL;
13204
13205       if (clear_and_select && !tree_view->priv->modify_selection_pressed)
13206         {
13207           GtkTreeSelectMode mode = 0;
13208
13209           if (tree_view->priv->extend_selection_pressed)
13210             mode |= GTK_TREE_SELECT_MODE_EXTEND;
13211
13212           _gtk_tree_selection_internal_select_node (tree_view->priv->selection,
13213                                                     node, tree, path, mode,
13214                                                     FALSE);
13215         }
13216
13217       /* We have to re-find tree and node here again, somebody might have
13218        * cleared the node or the whole tree in the GtkTreeSelection::changed
13219        * callback. If the nodes differ we bail out here.
13220        */
13221       _gtk_tree_view_find_node (tree_view, path, &new_tree, &new_node);
13222
13223       if (tree != new_tree || node != new_node)
13224         return;
13225
13226       if (clamp_node)
13227         {
13228           gtk_tree_view_clamp_node_visible (tree_view, tree, node);
13229           _gtk_tree_view_queue_draw_node (tree_view, tree, node, NULL);
13230         }
13231     }
13232
13233   g_signal_emit (tree_view, tree_view_signals[CURSOR_CHANGED], 0);
13234 }
13235
13236 /**
13237  * gtk_tree_view_get_cursor:
13238  * @tree_view: A #GtkTreeView
13239  * @path: (out) (transfer full) (allow-none): A pointer to be filled with the current cursor path, or %NULL
13240  * @focus_column: (out) (transfer none) (allow-none): A pointer to be filled with the current focus column, or %NULL
13241  *
13242  * Fills in @path and @focus_column with the current path and focus column.  If
13243  * the cursor isn't currently set, then *@path will be %NULL.  If no column
13244  * currently has focus, then *@focus_column will be %NULL.
13245  *
13246  * The returned #GtkTreePath must be freed with gtk_tree_path_free() when
13247  * you are done with it.
13248  **/
13249 void
13250 gtk_tree_view_get_cursor (GtkTreeView        *tree_view,
13251                           GtkTreePath       **path,
13252                           GtkTreeViewColumn **focus_column)
13253 {
13254   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
13255
13256   if (path)
13257     {
13258       if (gtk_tree_row_reference_valid (tree_view->priv->cursor))
13259         *path = gtk_tree_row_reference_get_path (tree_view->priv->cursor);
13260       else
13261         *path = NULL;
13262     }
13263
13264   if (focus_column)
13265     {
13266       *focus_column = tree_view->priv->focus_column;
13267     }
13268 }
13269
13270 /**
13271  * gtk_tree_view_set_cursor:
13272  * @tree_view: A #GtkTreeView
13273  * @path: A #GtkTreePath
13274  * @focus_column: (allow-none): A #GtkTreeViewColumn, or %NULL
13275  * @start_editing: %TRUE if the specified cell should start being edited.
13276  *
13277  * Sets the current keyboard focus to be at @path, and selects it.  This is
13278  * useful when you want to focus the user's attention on a particular row.  If
13279  * @focus_column is not %NULL, then focus is given to the column specified by
13280  * it. Additionally, if @focus_column is specified, and @start_editing is
13281  * %TRUE, then editing should be started in the specified cell.
13282  * This function is often followed by @gtk_widget_grab_focus (@tree_view)
13283  * in order to give keyboard focus to the widget.  Please note that editing
13284  * can only happen when the widget is realized.
13285  *
13286  * If @path is invalid for @model, the current cursor (if any) will be unset
13287  * and the function will return without failing.
13288  **/
13289 void
13290 gtk_tree_view_set_cursor (GtkTreeView       *tree_view,
13291                           GtkTreePath       *path,
13292                           GtkTreeViewColumn *focus_column,
13293                           gboolean           start_editing)
13294 {
13295   gtk_tree_view_set_cursor_on_cell (tree_view, path, focus_column,
13296                                     NULL, start_editing);
13297 }
13298
13299 /**
13300  * gtk_tree_view_set_cursor_on_cell:
13301  * @tree_view: A #GtkTreeView
13302  * @path: A #GtkTreePath
13303  * @focus_column: (allow-none): A #GtkTreeViewColumn, or %NULL
13304  * @focus_cell: (allow-none): A #GtkCellRenderer, or %NULL
13305  * @start_editing: %TRUE if the specified cell should start being edited.
13306  *
13307  * Sets the current keyboard focus to be at @path, and selects it.  This is
13308  * useful when you want to focus the user's attention on a particular row.  If
13309  * @focus_column is not %NULL, then focus is given to the column specified by
13310  * it. If @focus_column and @focus_cell are not %NULL, and @focus_column
13311  * contains 2 or more editable or activatable cells, then focus is given to
13312  * the cell specified by @focus_cell. Additionally, if @focus_column is
13313  * specified, and @start_editing is %TRUE, then editing should be started in
13314  * the specified cell.  This function is often followed by
13315  * @gtk_widget_grab_focus (@tree_view) in order to give keyboard focus to the
13316  * widget.  Please note that editing can only happen when the widget is
13317  * realized.
13318  *
13319  * If @path is invalid for @model, the current cursor (if any) will be unset
13320  * and the function will return without failing.
13321  *
13322  * Since: 2.2
13323  **/
13324 void
13325 gtk_tree_view_set_cursor_on_cell (GtkTreeView       *tree_view,
13326                                   GtkTreePath       *path,
13327                                   GtkTreeViewColumn *focus_column,
13328                                   GtkCellRenderer   *focus_cell,
13329                                   gboolean           start_editing)
13330 {
13331   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
13332   g_return_if_fail (path != NULL);
13333   g_return_if_fail (focus_column == NULL || GTK_IS_TREE_VIEW_COLUMN (focus_column));
13334
13335   if (!tree_view->priv->model)
13336     return;
13337
13338   if (focus_cell)
13339     {
13340       g_return_if_fail (focus_column);
13341       g_return_if_fail (GTK_IS_CELL_RENDERER (focus_cell));
13342     }
13343
13344   /* cancel the current editing, if it exists */
13345   if (tree_view->priv->edited_column &&
13346       gtk_cell_area_get_edit_widget
13347       (gtk_cell_layout_get_area (GTK_CELL_LAYOUT (tree_view->priv->edited_column))))
13348     gtk_tree_view_stop_editing (tree_view, TRUE);
13349
13350   gtk_tree_view_real_set_cursor (tree_view, path, TRUE, TRUE);
13351
13352   if (focus_column &&
13353       gtk_tree_view_column_get_visible (focus_column))
13354     {
13355       GList *list;
13356       gboolean column_in_tree = FALSE;
13357
13358       for (list = tree_view->priv->columns; list; list = list->next)
13359         if (list->data == focus_column)
13360           {
13361             column_in_tree = TRUE;
13362             break;
13363           }
13364       g_return_if_fail (column_in_tree);
13365       tree_view->priv->focus_column = focus_column;
13366       if (focus_cell)
13367         gtk_tree_view_column_focus_cell (focus_column, focus_cell);
13368       if (start_editing)
13369         gtk_tree_view_start_editing (tree_view, path, TRUE);
13370     }
13371 }
13372
13373 /**
13374  * gtk_tree_view_get_bin_window:
13375  * @tree_view: A #GtkTreeView
13376  *
13377  * Returns the window that @tree_view renders to.
13378  * This is used primarily to compare to <literal>event->window</literal>
13379  * to confirm that the event on @tree_view is on the right window.
13380  *
13381  * Return value: (transfer none): A #GdkWindow, or %NULL when @tree_view
13382  *     hasn't been realized yet
13383  **/
13384 GdkWindow *
13385 gtk_tree_view_get_bin_window (GtkTreeView *tree_view)
13386 {
13387   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), NULL);
13388
13389   return tree_view->priv->bin_window;
13390 }
13391
13392 /**
13393  * gtk_tree_view_get_path_at_pos:
13394  * @tree_view: A #GtkTreeView.
13395  * @x: The x position to be identified (relative to bin_window).
13396  * @y: The y position to be identified (relative to bin_window).
13397  * @path: (out) (allow-none): A pointer to a #GtkTreePath pointer to be filled in, or %NULL
13398  * @column: (out) (transfer none) (allow-none): A pointer to a #GtkTreeViewColumn pointer to be filled in, or %NULL
13399  * @cell_x: (out) (allow-none): A pointer where the X coordinate relative to the cell can be placed, or %NULL
13400  * @cell_y: (out) (allow-none): A pointer where the Y coordinate relative to the cell can be placed, or %NULL
13401  *
13402  * Finds the path at the point (@x, @y), relative to bin_window coordinates
13403  * (please see gtk_tree_view_get_bin_window()).
13404  * That is, @x and @y are relative to an events coordinates. @x and @y must
13405  * come from an event on the @tree_view only where <literal>event->window ==
13406  * gtk_tree_view_get_bin_window (<!-- -->)</literal>. It is primarily for
13407  * things like popup menus. If @path is non-%NULL, then it will be filled
13408  * with the #GtkTreePath at that point.  This path should be freed with
13409  * gtk_tree_path_free().  If @column is non-%NULL, then it will be filled
13410  * with the column at that point.  @cell_x and @cell_y return the coordinates
13411  * relative to the cell background (i.e. the @background_area passed to
13412  * gtk_cell_renderer_render()).  This function is only meaningful if
13413  * @tree_view is realized.  Therefore this function will always return %FALSE
13414  * if @tree_view is not realized or does not have a model.
13415  *
13416  * For converting widget coordinates (eg. the ones you get from
13417  * GtkWidget::query-tooltip), please see
13418  * gtk_tree_view_convert_widget_to_bin_window_coords().
13419  *
13420  * Return value: %TRUE if a row exists at that coordinate.
13421  **/
13422 gboolean
13423 gtk_tree_view_get_path_at_pos (GtkTreeView        *tree_view,
13424                                gint                x,
13425                                gint                y,
13426                                GtkTreePath       **path,
13427                                GtkTreeViewColumn **column,
13428                                gint               *cell_x,
13429                                gint               *cell_y)
13430 {
13431   GtkRBTree *tree;
13432   GtkRBNode *node;
13433   gint y_offset;
13434
13435   g_return_val_if_fail (tree_view != NULL, FALSE);
13436
13437   if (path)
13438     *path = NULL;
13439   if (column)
13440     *column = NULL;
13441
13442   if (tree_view->priv->bin_window == NULL)
13443     return FALSE;
13444
13445   if (tree_view->priv->tree == NULL)
13446     return FALSE;
13447
13448   if (x > gtk_adjustment_get_upper (tree_view->priv->hadjustment))
13449     return FALSE;
13450
13451   if (x < 0 || y < 0)
13452     return FALSE;
13453
13454   if (column || cell_x)
13455     {
13456       GtkTreeViewColumn *tmp_column;
13457       GtkTreeViewColumn *last_column = NULL;
13458       GList *list;
13459       gint remaining_x = x;
13460       gboolean found = FALSE;
13461       gboolean rtl;
13462       gint width;
13463
13464       rtl = (gtk_widget_get_direction (GTK_WIDGET (tree_view)) == GTK_TEXT_DIR_RTL);
13465       for (list = (rtl ? g_list_last (tree_view->priv->columns) : g_list_first (tree_view->priv->columns));
13466            list;
13467            list = (rtl ? list->prev : list->next))
13468         {
13469           tmp_column = list->data;
13470
13471           if (gtk_tree_view_column_get_visible (tmp_column) == FALSE)
13472             continue;
13473
13474           last_column = tmp_column;
13475           width = gtk_tree_view_column_get_width (tmp_column);
13476           if (remaining_x <= width)
13477             {
13478               found = TRUE;
13479
13480               if (column)
13481                 *column = tmp_column;
13482
13483               if (cell_x)
13484                 *cell_x = remaining_x;
13485
13486               break;
13487             }
13488           remaining_x -= width;
13489         }
13490
13491       /* If found is FALSE and there is a last_column, then it the remainder
13492        * space is in that area
13493        */
13494       if (!found)
13495         {
13496           if (last_column)
13497             {
13498               if (column)
13499                 *column = last_column;
13500
13501               if (cell_x)
13502                 *cell_x = gtk_tree_view_column_get_width (last_column) + remaining_x;
13503             }
13504           else
13505             {
13506               return FALSE;
13507             }
13508         }
13509     }
13510
13511   y_offset = _gtk_rbtree_find_offset (tree_view->priv->tree,
13512                                       TREE_WINDOW_Y_TO_RBTREE_Y (tree_view, y),
13513                                       &tree, &node);
13514
13515   if (tree == NULL)
13516     return FALSE;
13517
13518   if (cell_y)
13519     *cell_y = y_offset;
13520
13521   if (path)
13522     *path = _gtk_tree_view_find_path (tree_view, tree, node);
13523
13524   return TRUE;
13525 }
13526
13527
13528 static inline gint
13529 gtk_tree_view_get_cell_area_height (GtkTreeView *tree_view,
13530                                     GtkRBNode   *node,
13531                                     gint         vertical_separator)
13532 {
13533   int height;
13534
13535   /* The "cell" areas are the cell_area passed in to gtk_cell_renderer_render(),
13536    * i.e. just the cells, no spacing.
13537    *
13538    * The cell area height is at least expander_size - vertical_separator.
13539    * For regular nodes, the height is then at least expander_size. We should
13540    * be able to enforce the expander_size minimum here, because this
13541    * function will not be called for irregular (e.g. separator) rows.
13542    */
13543   height = gtk_tree_view_get_row_height (tree_view, node);
13544   if (height < tree_view->priv->expander_size)
13545     height = tree_view->priv->expander_size;
13546
13547   return height - vertical_separator;
13548 }
13549
13550 static inline gint
13551 gtk_tree_view_get_cell_area_y_offset (GtkTreeView *tree_view,
13552                                       GtkRBTree   *tree,
13553                                       GtkRBNode   *node,
13554                                       gint         vertical_separator)
13555 {
13556   int offset;
13557
13558   offset = gtk_tree_view_get_row_y_offset (tree_view, tree, node);
13559   offset += vertical_separator / 2;
13560
13561   return offset;
13562 }
13563
13564 /**
13565  * gtk_tree_view_get_cell_area:
13566  * @tree_view: a #GtkTreeView
13567  * @path: (allow-none): a #GtkTreePath for the row, or %NULL to get only horizontal coordinates
13568  * @column: (allow-none): a #GtkTreeViewColumn for the column, or %NULL to get only vertical coordinates
13569  * @rect: (out): rectangle to fill with cell rect
13570  *
13571  * Fills the bounding rectangle in bin_window coordinates for the cell at the
13572  * row specified by @path and the column specified by @column.  If @path is
13573  * %NULL, or points to a path not currently displayed, the @y and @height fields
13574  * of the rectangle will be filled with 0. If @column is %NULL, the @x and @width
13575  * fields will be filled with 0.  The sum of all cell rects does not cover the
13576  * entire tree; there are extra pixels in between rows, for example. The
13577  * returned rectangle is equivalent to the @cell_area passed to
13578  * gtk_cell_renderer_render().  This function is only valid if @tree_view is
13579  * realized.
13580  **/
13581 void
13582 gtk_tree_view_get_cell_area (GtkTreeView        *tree_view,
13583                              GtkTreePath        *path,
13584                              GtkTreeViewColumn  *column,
13585                              GdkRectangle       *rect)
13586 {
13587   GtkRBTree *tree = NULL;
13588   GtkRBNode *node = NULL;
13589   gint vertical_separator;
13590   gint horizontal_separator;
13591
13592   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
13593   g_return_if_fail (column == NULL || GTK_IS_TREE_VIEW_COLUMN (column));
13594   g_return_if_fail (rect != NULL);
13595   g_return_if_fail (!column || gtk_tree_view_column_get_tree_view (column) == (GtkWidget *) tree_view);
13596   g_return_if_fail (gtk_widget_get_realized (GTK_WIDGET (tree_view)));
13597
13598   gtk_widget_style_get (GTK_WIDGET (tree_view),
13599                         "vertical-separator", &vertical_separator,
13600                         "horizontal-separator", &horizontal_separator,
13601                         NULL);
13602
13603   rect->x = 0;
13604   rect->y = 0;
13605   rect->width = 0;
13606   rect->height = 0;
13607
13608   if (column)
13609     {
13610       rect->x = gtk_tree_view_column_get_x_offset (column) + horizontal_separator/2;
13611       rect->width = gtk_tree_view_column_get_width (column) - horizontal_separator;
13612     }
13613
13614   if (path)
13615     {
13616       gboolean ret = _gtk_tree_view_find_node (tree_view, path, &tree, &node);
13617
13618       /* Get vertical coords */
13619       if ((!ret && tree == NULL) || ret)
13620         return;
13621
13622       if (row_is_separator (tree_view, NULL, path))
13623         {
13624           /* There isn't really a "cell area" for separator, so we
13625            * return the y, height values for background area instead.
13626            */
13627           rect->y = gtk_tree_view_get_row_y_offset (tree_view, tree, node);
13628           rect->height = gtk_tree_view_get_row_height (tree_view, node);
13629         }
13630       else
13631         {
13632           rect->y = gtk_tree_view_get_cell_area_y_offset (tree_view, tree, node,
13633                                                           vertical_separator);
13634           rect->height = gtk_tree_view_get_cell_area_height (tree_view, node,
13635                                                              vertical_separator);
13636         }
13637
13638       if (column &&
13639           gtk_tree_view_is_expander_column (tree_view, column))
13640         {
13641           gint depth = gtk_tree_path_get_depth (path);
13642           gboolean rtl;
13643
13644           rtl = gtk_widget_get_direction (GTK_WIDGET (tree_view)) == GTK_TEXT_DIR_RTL;
13645
13646           if (!rtl)
13647             rect->x += (depth - 1) * tree_view->priv->level_indentation;
13648           rect->width -= (depth - 1) * tree_view->priv->level_indentation;
13649
13650           if (gtk_tree_view_draw_expanders (tree_view))
13651             {
13652               if (!rtl)
13653                 rect->x += depth * tree_view->priv->expander_size;
13654               rect->width -= depth * tree_view->priv->expander_size;
13655             }
13656
13657           rect->width = MAX (rect->width, 0);
13658         }
13659     }
13660 }
13661
13662 static inline gint
13663 gtk_tree_view_get_row_height (GtkTreeView *tree_view,
13664                               GtkRBNode   *node)
13665 {
13666   int height;
13667
13668   /* The "background" areas of all rows/cells add up to cover the entire tree.
13669    * The background includes all inter-row and inter-cell spacing.
13670    *
13671    * If the row pointed at by node does not have a height set, we default
13672    * to expander_size, which is the minimum height for regular nodes.
13673    * Non-regular nodes (e.g. separators) can have a height set smaller
13674    * than expander_size and should not be overruled here.
13675    */
13676   height = GTK_RBNODE_GET_HEIGHT (node);
13677   if (height <= 0)
13678     height = tree_view->priv->expander_size;
13679
13680   return height;
13681 }
13682
13683 static inline gint
13684 gtk_tree_view_get_row_y_offset (GtkTreeView *tree_view,
13685                                 GtkRBTree   *tree,
13686                                 GtkRBNode   *node)
13687 {
13688   int offset;
13689
13690   offset = _gtk_rbtree_node_find_offset (tree, node);
13691
13692   return RBTREE_Y_TO_TREE_WINDOW_Y (tree_view, offset);
13693 }
13694
13695 /**
13696  * gtk_tree_view_get_background_area:
13697  * @tree_view: a #GtkTreeView
13698  * @path: (allow-none): a #GtkTreePath for the row, or %NULL to get only horizontal coordinates
13699  * @column: (allow-none): a #GtkTreeViewColumn for the column, or %NULL to get only vertical coordiantes
13700  * @rect: (out): rectangle to fill with cell background rect
13701  *
13702  * Fills the bounding rectangle in bin_window coordinates for the cell at the
13703  * row specified by @path and the column specified by @column.  If @path is
13704  * %NULL, or points to a node not found in the tree, the @y and @height fields of
13705  * the rectangle will be filled with 0. If @column is %NULL, the @x and @width
13706  * fields will be filled with 0.  The returned rectangle is equivalent to the
13707  * @background_area passed to gtk_cell_renderer_render().  These background
13708  * areas tile to cover the entire bin window.  Contrast with the @cell_area,
13709  * returned by gtk_tree_view_get_cell_area(), which returns only the cell
13710  * itself, excluding surrounding borders and the tree expander area.
13711  *
13712  **/
13713 void
13714 gtk_tree_view_get_background_area (GtkTreeView        *tree_view,
13715                                    GtkTreePath        *path,
13716                                    GtkTreeViewColumn  *column,
13717                                    GdkRectangle       *rect)
13718 {
13719   GtkRBTree *tree = NULL;
13720   GtkRBNode *node = NULL;
13721
13722   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
13723   g_return_if_fail (column == NULL || GTK_IS_TREE_VIEW_COLUMN (column));
13724   g_return_if_fail (rect != NULL);
13725
13726   rect->x = 0;
13727   rect->y = 0;
13728   rect->width = 0;
13729   rect->height = 0;
13730
13731   if (path)
13732     {
13733       /* Get vertical coords */
13734
13735       if (!_gtk_tree_view_find_node (tree_view, path, &tree, &node) &&
13736           tree == NULL)
13737         return;
13738
13739       rect->y = gtk_tree_view_get_row_y_offset (tree_view, tree, node);
13740       rect->height = gtk_tree_view_get_row_height (tree_view, node);
13741     }
13742
13743   if (column)
13744     {
13745       gint x2 = 0;
13746
13747       gtk_tree_view_get_background_xrange (tree_view, tree, column, &rect->x, &x2);
13748       rect->width = x2 - rect->x;
13749     }
13750 }
13751
13752 /**
13753  * gtk_tree_view_get_visible_rect:
13754  * @tree_view: a #GtkTreeView
13755  * @visible_rect: (out): rectangle to fill
13756  *
13757  * Fills @visible_rect with the currently-visible region of the
13758  * buffer, in tree coordinates. Convert to bin_window coordinates with
13759  * gtk_tree_view_convert_tree_to_bin_window_coords().
13760  * Tree coordinates start at 0,0 for row 0 of the tree, and cover the entire
13761  * scrollable area of the tree.
13762  **/
13763 void
13764 gtk_tree_view_get_visible_rect (GtkTreeView  *tree_view,
13765                                 GdkRectangle *visible_rect)
13766 {
13767   GtkAllocation allocation;
13768   GtkWidget *widget;
13769
13770   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
13771
13772   widget = GTK_WIDGET (tree_view);
13773
13774   if (visible_rect)
13775     {
13776       gtk_widget_get_allocation (widget, &allocation);
13777       visible_rect->x = gtk_adjustment_get_value (tree_view->priv->hadjustment);
13778       visible_rect->y = gtk_adjustment_get_value (tree_view->priv->vadjustment);
13779       visible_rect->width = allocation.width;
13780       visible_rect->height = allocation.height - gtk_tree_view_get_effective_header_height (tree_view);
13781     }
13782 }
13783
13784 /**
13785  * gtk_tree_view_convert_widget_to_tree_coords:
13786  * @tree_view: a #GtkTreeView
13787  * @wx: X coordinate relative to the widget
13788  * @wy: Y coordinate relative to the widget
13789  * @tx: (out): return location for tree X coordinate
13790  * @ty: (out): return location for tree Y coordinate
13791  *
13792  * Converts widget coordinates to coordinates for the
13793  * tree (the full scrollable area of the tree).
13794  *
13795  * Since: 2.12
13796  **/
13797 void
13798 gtk_tree_view_convert_widget_to_tree_coords (GtkTreeView *tree_view,
13799                                              gint         wx,
13800                                              gint         wy,
13801                                              gint        *tx,
13802                                              gint        *ty)
13803 {
13804   gint x, y;
13805
13806   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
13807
13808   gtk_tree_view_convert_widget_to_bin_window_coords (tree_view,
13809                                                      wx, wy,
13810                                                      &x, &y);
13811   gtk_tree_view_convert_bin_window_to_tree_coords (tree_view,
13812                                                    x, y,
13813                                                    tx, ty);
13814 }
13815
13816 /**
13817  * gtk_tree_view_convert_tree_to_widget_coords:
13818  * @tree_view: a #GtkTreeView
13819  * @tx: X coordinate relative to the tree
13820  * @ty: Y coordinate relative to the tree
13821  * @wx: (out): return location for widget X coordinate
13822  * @wy: (out): return location for widget Y coordinate
13823  *
13824  * Converts tree coordinates (coordinates in full scrollable area of the tree)
13825  * to widget coordinates.
13826  *
13827  * Since: 2.12
13828  **/
13829 void
13830 gtk_tree_view_convert_tree_to_widget_coords (GtkTreeView *tree_view,
13831                                              gint         tx,
13832                                              gint         ty,
13833                                              gint        *wx,
13834                                              gint        *wy)
13835 {
13836   gint x, y;
13837
13838   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
13839
13840   gtk_tree_view_convert_tree_to_bin_window_coords (tree_view,
13841                                                    tx, ty,
13842                                                    &x, &y);
13843   gtk_tree_view_convert_bin_window_to_widget_coords (tree_view,
13844                                                      x, y,
13845                                                      wx, wy);
13846 }
13847
13848 /**
13849  * gtk_tree_view_convert_widget_to_bin_window_coords:
13850  * @tree_view: a #GtkTreeView
13851  * @wx: X coordinate relative to the widget
13852  * @wy: Y coordinate relative to the widget
13853  * @bx: (out): return location for bin_window X coordinate
13854  * @by: (out): return location for bin_window Y coordinate
13855  *
13856  * Converts widget coordinates to coordinates for the bin_window
13857  * (see gtk_tree_view_get_bin_window()).
13858  *
13859  * Since: 2.12
13860  **/
13861 void
13862 gtk_tree_view_convert_widget_to_bin_window_coords (GtkTreeView *tree_view,
13863                                                    gint         wx,
13864                                                    gint         wy,
13865                                                    gint        *bx,
13866                                                    gint        *by)
13867 {
13868   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
13869
13870   if (bx)
13871     *bx = wx + gtk_adjustment_get_value (tree_view->priv->hadjustment);
13872   if (by)
13873     *by = wy - gtk_tree_view_get_effective_header_height (tree_view);
13874 }
13875
13876 /**
13877  * gtk_tree_view_convert_bin_window_to_widget_coords:
13878  * @tree_view: a #GtkTreeView
13879  * @bx: bin_window X coordinate
13880  * @by: bin_window Y coordinate
13881  * @wx: (out): return location for widget X coordinate
13882  * @wy: (out): return location for widget Y coordinate
13883  *
13884  * Converts bin_window coordinates (see gtk_tree_view_get_bin_window())
13885  * to widget relative coordinates.
13886  *
13887  * Since: 2.12
13888  **/
13889 void
13890 gtk_tree_view_convert_bin_window_to_widget_coords (GtkTreeView *tree_view,
13891                                                    gint         bx,
13892                                                    gint         by,
13893                                                    gint        *wx,
13894                                                    gint        *wy)
13895 {
13896   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
13897
13898   if (wx)
13899     *wx = bx - gtk_adjustment_get_value (tree_view->priv->hadjustment);
13900   if (wy)
13901     *wy = by + gtk_tree_view_get_effective_header_height (tree_view);
13902 }
13903
13904 /**
13905  * gtk_tree_view_convert_tree_to_bin_window_coords:
13906  * @tree_view: a #GtkTreeView
13907  * @tx: tree X coordinate
13908  * @ty: tree Y coordinate
13909  * @bx: (out): return location for X coordinate relative to bin_window
13910  * @by: (out): return location for Y coordinate relative to bin_window
13911  *
13912  * Converts tree coordinates (coordinates in full scrollable area of the tree)
13913  * to bin_window coordinates.
13914  *
13915  * Since: 2.12
13916  **/
13917 void
13918 gtk_tree_view_convert_tree_to_bin_window_coords (GtkTreeView *tree_view,
13919                                                  gint         tx,
13920                                                  gint         ty,
13921                                                  gint        *bx,
13922                                                  gint        *by)
13923 {
13924   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
13925
13926   if (bx)
13927     *bx = tx;
13928   if (by)
13929     *by = ty - tree_view->priv->dy;
13930 }
13931
13932 /**
13933  * gtk_tree_view_convert_bin_window_to_tree_coords:
13934  * @tree_view: a #GtkTreeView
13935  * @bx: X coordinate relative to bin_window
13936  * @by: Y coordinate relative to bin_window
13937  * @tx: (out): return location for tree X coordinate
13938  * @ty: (out): return location for tree Y coordinate
13939  *
13940  * Converts bin_window coordinates to coordinates for the
13941  * tree (the full scrollable area of the tree).
13942  *
13943  * Since: 2.12
13944  **/
13945 void
13946 gtk_tree_view_convert_bin_window_to_tree_coords (GtkTreeView *tree_view,
13947                                                  gint         bx,
13948                                                  gint         by,
13949                                                  gint        *tx,
13950                                                  gint        *ty)
13951 {
13952   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
13953
13954   if (tx)
13955     *tx = bx;
13956   if (ty)
13957     *ty = by + tree_view->priv->dy;
13958 }
13959
13960
13961
13962 /**
13963  * gtk_tree_view_get_visible_range:
13964  * @tree_view: A #GtkTreeView
13965  * @start_path: (out) (allow-none): Return location for start of region,
13966  *              or %NULL.
13967  * @end_path: (out) (allow-none): Return location for end of region, or %NULL.
13968  *
13969  * Sets @start_path and @end_path to be the first and last visible path.
13970  * Note that there may be invisible paths in between.
13971  *
13972  * The paths should be freed with gtk_tree_path_free() after use.
13973  *
13974  * Returns: %TRUE, if valid paths were placed in @start_path and @end_path.
13975  *
13976  * Since: 2.8
13977  **/
13978 gboolean
13979 gtk_tree_view_get_visible_range (GtkTreeView  *tree_view,
13980                                  GtkTreePath **start_path,
13981                                  GtkTreePath **end_path)
13982 {
13983   GtkRBTree *tree;
13984   GtkRBNode *node;
13985   gboolean retval;
13986
13987   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), FALSE);
13988
13989   if (!tree_view->priv->tree)
13990     return FALSE;
13991
13992   retval = TRUE;
13993
13994   if (start_path)
13995     {
13996       _gtk_rbtree_find_offset (tree_view->priv->tree,
13997                                TREE_WINDOW_Y_TO_RBTREE_Y (tree_view, 0),
13998                                &tree, &node);
13999       if (node)
14000         *start_path = _gtk_tree_view_find_path (tree_view, tree, node);
14001       else
14002         retval = FALSE;
14003     }
14004
14005   if (end_path)
14006     {
14007       gint y;
14008
14009       if (tree_view->priv->height < gtk_adjustment_get_page_size (tree_view->priv->vadjustment))
14010         y = tree_view->priv->height - 1;
14011       else
14012         y = TREE_WINDOW_Y_TO_RBTREE_Y (tree_view, gtk_adjustment_get_page_size (tree_view->priv->vadjustment)) - 1;
14013
14014       _gtk_rbtree_find_offset (tree_view->priv->tree, y, &tree, &node);
14015       if (node)
14016         *end_path = _gtk_tree_view_find_path (tree_view, tree, node);
14017       else
14018         retval = FALSE;
14019     }
14020
14021   return retval;
14022 }
14023
14024 /**
14025  * gtk_tree_view_is_blank_at_pos:
14026  * @tree_view: A #GtkTreeView
14027  * @x: The x position to be identified (relative to bin_window)
14028  * @y: The y position to be identified (relative to bin_window)
14029  * @path: (out) (allow-none): A pointer to a #GtkTreePath pointer to be filled in, or %NULL
14030  * @column: (out) (allow-none): A pointer to a #GtkTreeViewColumn pointer to be filled in, or %NULL
14031  * @cell_x: (out) (allow-none): A pointer where the X coordinate relative to the cell can be placed, or %NULL
14032  * @cell_y: (out) (allow-none): A pointer where the Y coordinate relative to the cell can be placed, or %NULL
14033  *
14034  * Determine whether the point (@x, @y) in @tree_view is blank, that is no
14035  * cell content nor an expander arrow is drawn at the location. If so, the
14036  * location can be considered as the background. You might wish to take
14037  * special action on clicks on the background, such as clearing a current
14038  * selection, having a custom context menu or starting rubber banding.
14039  *
14040  * The @x and @y coordinate that are provided must be relative to bin_window
14041  * coordinates.  That is, @x and @y must come from an event on @tree_view
14042  * where <literal>event->window == gtk_tree_view_get_bin_window (<!-- -->)</literal>.
14043  *
14044  * For converting widget coordinates (eg. the ones you get from
14045  * GtkWidget::query-tooltip), please see
14046  * gtk_tree_view_convert_widget_to_bin_window_coords().
14047  *
14048  * The @path, @column, @cell_x and @cell_y arguments will be filled in
14049  * likewise as for gtk_tree_view_get_path_at_pos().  Please see
14050  * gtk_tree_view_get_path_at_pos() for more information.
14051  *
14052  * Return value: %TRUE if the area at the given coordinates is blank,
14053  * %FALSE otherwise.
14054  *
14055  * Since: 3.0
14056  */
14057 gboolean
14058 gtk_tree_view_is_blank_at_pos (GtkTreeView       *tree_view,
14059                                gint                x,
14060                                gint                y,
14061                                GtkTreePath       **path,
14062                                GtkTreeViewColumn **column,
14063                                gint               *cell_x,
14064                                gint               *cell_y)
14065 {
14066   GtkRBTree *tree;
14067   GtkRBNode *node;
14068   GtkTreeIter iter;
14069   GtkTreePath *real_path;
14070   GtkTreeViewColumn *real_column;
14071   GdkRectangle cell_area, background_area;
14072
14073   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), FALSE);
14074
14075   if (!gtk_tree_view_get_path_at_pos (tree_view, x, y,
14076                                       &real_path, &real_column,
14077                                       cell_x, cell_y))
14078     /* If there's no path here, it is blank */
14079     return TRUE;
14080
14081   if (path)
14082     *path = real_path;
14083
14084   if (column)
14085     *column = real_column;
14086
14087   gtk_tree_model_get_iter (tree_view->priv->model, &iter, real_path);
14088   _gtk_tree_view_find_node (tree_view, real_path, &tree, &node);
14089
14090   /* Check if there's an expander arrow at (x, y) */
14091   if (real_column == tree_view->priv->expander_column
14092       && gtk_tree_view_draw_expanders (tree_view))
14093     {
14094       gboolean over_arrow;
14095
14096       over_arrow = coords_are_over_arrow (tree_view, tree, node, x, y);
14097
14098       if (over_arrow)
14099         {
14100           if (!path)
14101             gtk_tree_path_free (real_path);
14102           return FALSE;
14103         }
14104     }
14105
14106   /* Otherwise, have the column see if there's a cell at (x, y) */
14107   gtk_tree_view_column_cell_set_cell_data (real_column,
14108                                            tree_view->priv->model,
14109                                            &iter,
14110                                            GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_PARENT),
14111                                            node->children ? TRUE : FALSE);
14112
14113   gtk_tree_view_get_background_area (tree_view, real_path, real_column,
14114                                      &background_area);
14115   gtk_tree_view_get_cell_area (tree_view, real_path, real_column,
14116                                &cell_area);
14117
14118   if (!path)
14119     gtk_tree_path_free (real_path);
14120
14121   return _gtk_tree_view_column_is_blank_at_pos (real_column,
14122                                                 &cell_area,
14123                                                 &background_area,
14124                                                 x, y);
14125 }
14126
14127 static void
14128 unset_reorderable (GtkTreeView *tree_view)
14129 {
14130   if (tree_view->priv->reorderable)
14131     {
14132       tree_view->priv->reorderable = FALSE;
14133       g_object_notify (G_OBJECT (tree_view), "reorderable");
14134     }
14135 }
14136
14137 /**
14138  * gtk_tree_view_enable_model_drag_source:
14139  * @tree_view: a #GtkTreeView
14140  * @start_button_mask: Mask of allowed buttons to start drag
14141  * @targets: (array length=n_targets): the table of targets that the drag will support
14142  * @n_targets: the number of items in @targets
14143  * @actions: the bitmask of possible actions for a drag from this
14144  *    widget
14145  *
14146  * Turns @tree_view into a drag source for automatic DND. Calling this
14147  * method sets #GtkTreeView:reorderable to %FALSE.
14148  **/
14149 void
14150 gtk_tree_view_enable_model_drag_source (GtkTreeView              *tree_view,
14151                                         GdkModifierType           start_button_mask,
14152                                         const GtkTargetEntry     *targets,
14153                                         gint                      n_targets,
14154                                         GdkDragAction             actions)
14155 {
14156   TreeViewDragInfo *di;
14157
14158   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
14159
14160   gtk_drag_source_set (GTK_WIDGET (tree_view),
14161                        0,
14162                        targets,
14163                        n_targets,
14164                        actions);
14165
14166   di = ensure_info (tree_view);
14167
14168   di->start_button_mask = start_button_mask;
14169   di->source_actions = actions;
14170   di->source_set = TRUE;
14171
14172   unset_reorderable (tree_view);
14173 }
14174
14175 /**
14176  * gtk_tree_view_enable_model_drag_dest:
14177  * @tree_view: a #GtkTreeView
14178  * @targets: (array length=n_targets): the table of targets that
14179  *           the drag will support
14180  * @n_targets: the number of items in @targets
14181  * @actions: the bitmask of possible actions for a drag from this
14182  *    widget
14183  *
14184  * Turns @tree_view into a drop destination for automatic DND. Calling
14185  * this method sets #GtkTreeView:reorderable to %FALSE.
14186  **/
14187 void
14188 gtk_tree_view_enable_model_drag_dest (GtkTreeView              *tree_view,
14189                                       const GtkTargetEntry     *targets,
14190                                       gint                      n_targets,
14191                                       GdkDragAction             actions)
14192 {
14193   TreeViewDragInfo *di;
14194
14195   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
14196
14197   gtk_drag_dest_set (GTK_WIDGET (tree_view),
14198                      0,
14199                      targets,
14200                      n_targets,
14201                      actions);
14202
14203   di = ensure_info (tree_view);
14204   di->dest_set = TRUE;
14205
14206   unset_reorderable (tree_view);
14207 }
14208
14209 /**
14210  * gtk_tree_view_unset_rows_drag_source:
14211  * @tree_view: a #GtkTreeView
14212  *
14213  * Undoes the effect of
14214  * gtk_tree_view_enable_model_drag_source(). Calling this method sets
14215  * #GtkTreeView:reorderable to %FALSE.
14216  **/
14217 void
14218 gtk_tree_view_unset_rows_drag_source (GtkTreeView *tree_view)
14219 {
14220   TreeViewDragInfo *di;
14221
14222   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
14223
14224   di = get_info (tree_view);
14225
14226   if (di)
14227     {
14228       if (di->source_set)
14229         {
14230           gtk_drag_source_unset (GTK_WIDGET (tree_view));
14231           di->source_set = FALSE;
14232         }
14233
14234       if (!di->dest_set && !di->source_set)
14235         remove_info (tree_view);
14236     }
14237
14238   unset_reorderable (tree_view);
14239 }
14240
14241 /**
14242  * gtk_tree_view_unset_rows_drag_dest:
14243  * @tree_view: a #GtkTreeView
14244  *
14245  * Undoes the effect of
14246  * gtk_tree_view_enable_model_drag_dest(). Calling this method sets
14247  * #GtkTreeView:reorderable to %FALSE.
14248  **/
14249 void
14250 gtk_tree_view_unset_rows_drag_dest (GtkTreeView *tree_view)
14251 {
14252   TreeViewDragInfo *di;
14253
14254   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
14255
14256   di = get_info (tree_view);
14257
14258   if (di)
14259     {
14260       if (di->dest_set)
14261         {
14262           gtk_drag_dest_unset (GTK_WIDGET (tree_view));
14263           di->dest_set = FALSE;
14264         }
14265
14266       if (!di->dest_set && !di->source_set)
14267         remove_info (tree_view);
14268     }
14269
14270   unset_reorderable (tree_view);
14271 }
14272
14273 /**
14274  * gtk_tree_view_set_drag_dest_row:
14275  * @tree_view: a #GtkTreeView
14276  * @path: (allow-none): The path of the row to highlight, or %NULL
14277  * @pos: Specifies whether to drop before, after or into the row
14278  *
14279  * Sets the row that is highlighted for feedback.
14280  * If @path is %NULL, an existing highlight is removed.
14281  */
14282 void
14283 gtk_tree_view_set_drag_dest_row (GtkTreeView            *tree_view,
14284                                  GtkTreePath            *path,
14285                                  GtkTreeViewDropPosition pos)
14286 {
14287   GtkTreePath *current_dest;
14288
14289   /* Note; this function is exported to allow a custom DND
14290    * implementation, so it can't touch TreeViewDragInfo
14291    */
14292
14293   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
14294
14295   current_dest = NULL;
14296
14297   if (tree_view->priv->drag_dest_row)
14298     {
14299       current_dest = gtk_tree_row_reference_get_path (tree_view->priv->drag_dest_row);
14300       gtk_tree_row_reference_free (tree_view->priv->drag_dest_row);
14301     }
14302
14303   /* special case a drop on an empty model */
14304   tree_view->priv->empty_view_drop = 0;
14305
14306   if (pos == GTK_TREE_VIEW_DROP_BEFORE && path
14307       && gtk_tree_path_get_depth (path) == 1
14308       && gtk_tree_path_get_indices (path)[0] == 0)
14309     {
14310       gint n_children;
14311
14312       n_children = gtk_tree_model_iter_n_children (tree_view->priv->model,
14313                                                    NULL);
14314
14315       if (!n_children)
14316         tree_view->priv->empty_view_drop = 1;
14317     }
14318
14319   tree_view->priv->drag_dest_pos = pos;
14320
14321   if (path)
14322     {
14323       tree_view->priv->drag_dest_row =
14324         gtk_tree_row_reference_new_proxy (G_OBJECT (tree_view), tree_view->priv->model, path);
14325       gtk_tree_view_queue_draw_path (tree_view, path, NULL);
14326     }
14327   else
14328     tree_view->priv->drag_dest_row = NULL;
14329
14330   if (current_dest)
14331     {
14332       GtkRBTree *tree, *new_tree;
14333       GtkRBNode *node, *new_node;
14334
14335       _gtk_tree_view_find_node (tree_view, current_dest, &tree, &node);
14336       _gtk_tree_view_queue_draw_node (tree_view, tree, node, NULL);
14337
14338       if (tree && node)
14339         {
14340           _gtk_rbtree_next_full (tree, node, &new_tree, &new_node);
14341           if (new_tree && new_node)
14342             _gtk_tree_view_queue_draw_node (tree_view, new_tree, new_node, NULL);
14343
14344           _gtk_rbtree_prev_full (tree, node, &new_tree, &new_node);
14345           if (new_tree && new_node)
14346             _gtk_tree_view_queue_draw_node (tree_view, new_tree, new_node, NULL);
14347         }
14348       gtk_tree_path_free (current_dest);
14349     }
14350 }
14351
14352 /**
14353  * gtk_tree_view_get_drag_dest_row:
14354  * @tree_view: a #GtkTreeView
14355  * @path: (out) (allow-none): Return location for the path of the highlighted row, or %NULL.
14356  * @pos: (out) (allow-none): Return location for the drop position, or %NULL
14357  *
14358  * Gets information about the row that is highlighted for feedback.
14359  **/
14360 void
14361 gtk_tree_view_get_drag_dest_row (GtkTreeView              *tree_view,
14362                                  GtkTreePath             **path,
14363                                  GtkTreeViewDropPosition  *pos)
14364 {
14365   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
14366
14367   if (path)
14368     {
14369       if (tree_view->priv->drag_dest_row)
14370         *path = gtk_tree_row_reference_get_path (tree_view->priv->drag_dest_row);
14371       else
14372         {
14373           if (tree_view->priv->empty_view_drop)
14374             *path = gtk_tree_path_new_from_indices (0, -1);
14375           else
14376             *path = NULL;
14377         }
14378     }
14379
14380   if (pos)
14381     *pos = tree_view->priv->drag_dest_pos;
14382 }
14383
14384 /**
14385  * gtk_tree_view_get_dest_row_at_pos:
14386  * @tree_view: a #GtkTreeView
14387  * @drag_x: the position to determine the destination row for
14388  * @drag_y: the position to determine the destination row for
14389  * @path: (out) (allow-none): Return location for the path of the highlighted row, or %NULL.
14390  * @pos: (out) (allow-none): Return location for the drop position, or %NULL
14391  *
14392  * Determines the destination row for a given position.  @drag_x and
14393  * @drag_y are expected to be in widget coordinates.  This function is only
14394  * meaningful if @tree_view is realized.  Therefore this function will always
14395  * return %FALSE if @tree_view is not realized or does not have a model.
14396  *
14397  * Return value: whether there is a row at the given position, %TRUE if this
14398  * is indeed the case.
14399  **/
14400 gboolean
14401 gtk_tree_view_get_dest_row_at_pos (GtkTreeView             *tree_view,
14402                                    gint                     drag_x,
14403                                    gint                     drag_y,
14404                                    GtkTreePath            **path,
14405                                    GtkTreeViewDropPosition *pos)
14406 {
14407   gint cell_y;
14408   gint bin_x, bin_y;
14409   gdouble offset_into_row;
14410   gdouble third;
14411   GdkRectangle cell;
14412   GtkTreeViewColumn *column = NULL;
14413   GtkTreePath *tmp_path = NULL;
14414
14415   /* Note; this function is exported to allow a custom DND
14416    * implementation, so it can't touch TreeViewDragInfo
14417    */
14418
14419   g_return_val_if_fail (tree_view != NULL, FALSE);
14420   g_return_val_if_fail (drag_x >= 0, FALSE);
14421   g_return_val_if_fail (drag_y >= 0, FALSE);
14422
14423   if (path)
14424     *path = NULL;
14425
14426   if (tree_view->priv->bin_window == NULL)
14427     return FALSE;
14428
14429   if (tree_view->priv->tree == NULL)
14430     return FALSE;
14431
14432   /* If in the top third of a row, we drop before that row; if
14433    * in the bottom third, drop after that row; if in the middle,
14434    * and the row has children, drop into the row.
14435    */
14436   gtk_tree_view_convert_widget_to_bin_window_coords (tree_view, drag_x, drag_y,
14437                                                      &bin_x, &bin_y);
14438
14439   if (!gtk_tree_view_get_path_at_pos (tree_view,
14440                                       bin_x,
14441                                       bin_y,
14442                                       &tmp_path,
14443                                       &column,
14444                                       NULL,
14445                                       &cell_y))
14446     return FALSE;
14447
14448   gtk_tree_view_get_background_area (tree_view, tmp_path, column,
14449                                      &cell);
14450
14451   offset_into_row = cell_y;
14452
14453   if (path)
14454     *path = tmp_path;
14455   else
14456     gtk_tree_path_free (tmp_path);
14457
14458   tmp_path = NULL;
14459
14460   third = cell.height / 3.0;
14461
14462   if (pos)
14463     {
14464       if (offset_into_row < third)
14465         {
14466           *pos = GTK_TREE_VIEW_DROP_BEFORE;
14467         }
14468       else if (offset_into_row < (cell.height / 2.0))
14469         {
14470           *pos = GTK_TREE_VIEW_DROP_INTO_OR_BEFORE;
14471         }
14472       else if (offset_into_row < third * 2.0)
14473         {
14474           *pos = GTK_TREE_VIEW_DROP_INTO_OR_AFTER;
14475         }
14476       else
14477         {
14478           *pos = GTK_TREE_VIEW_DROP_AFTER;
14479         }
14480     }
14481
14482   return TRUE;
14483 }
14484
14485
14486
14487 /* KEEP IN SYNC WITH GTK_TREE_VIEW_BIN_EXPOSE */
14488 /**
14489  * gtk_tree_view_create_row_drag_icon:
14490  * @tree_view: a #GtkTreeView
14491  * @path: a #GtkTreePath in @tree_view
14492  *
14493  * Creates a #cairo_surface_t representation of the row at @path.
14494  * This image is used for a drag icon.
14495  *
14496  * Return value: (transfer full): a newly-allocated surface of the drag icon.
14497  **/
14498 cairo_surface_t *
14499 gtk_tree_view_create_row_drag_icon (GtkTreeView  *tree_view,
14500                                     GtkTreePath  *path)
14501 {
14502   GtkTreeIter   iter;
14503   GtkRBTree    *tree;
14504   GtkRBNode    *node;
14505   GtkStyleContext *context;
14506   GtkStateFlags state;
14507   gint cell_offset;
14508   GList *list;
14509   GdkRectangle background_area;
14510   GtkWidget *widget;
14511   gint depth;
14512   /* start drawing inside the black outline */
14513   gint x = 1, y = 1;
14514   cairo_surface_t *surface;
14515   gint bin_window_width;
14516   gboolean is_separator = FALSE;
14517   gboolean rtl, allow_rules;
14518   cairo_t *cr;
14519
14520   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), NULL);
14521   g_return_val_if_fail (path != NULL, NULL);
14522
14523   widget = GTK_WIDGET (tree_view);
14524
14525   if (!gtk_widget_get_realized (widget))
14526     return NULL;
14527
14528   depth = gtk_tree_path_get_depth (path);
14529
14530   _gtk_tree_view_find_node (tree_view,
14531                             path,
14532                             &tree,
14533                             &node);
14534
14535   if (tree == NULL)
14536     return NULL;
14537
14538   if (!gtk_tree_model_get_iter (tree_view->priv->model,
14539                                 &iter,
14540                                 path))
14541     return NULL;
14542
14543   context = gtk_widget_get_style_context (widget);
14544
14545   gtk_style_context_save (context);
14546
14547   state = gtk_widget_get_state_flags (widget);
14548   gtk_style_context_set_state (context, state);
14549
14550   gtk_style_context_add_class (context, GTK_STYLE_CLASS_VIEW);
14551   gtk_style_context_add_region (context, GTK_STYLE_REGION_COLUMN, 0);
14552
14553   gtk_widget_style_get (widget,
14554                         "allow-rules", &allow_rules,
14555                         NULL);
14556
14557   if (allow_rules && tree_view->priv->has_rules)
14558     {
14559       GtkRegionFlags row_flags;
14560
14561       if ((_gtk_rbtree_node_get_index (tree, node) % 2))
14562         row_flags = GTK_REGION_ODD;
14563       else
14564         row_flags = GTK_REGION_EVEN;
14565
14566       gtk_style_context_add_region (context, GTK_STYLE_REGION_ROW, row_flags);
14567     }
14568
14569   is_separator = row_is_separator (tree_view, &iter, NULL);
14570
14571   cell_offset = x;
14572
14573   background_area.y = y;
14574   background_area.height = gtk_tree_view_get_row_height (tree_view, node);
14575
14576   bin_window_width = gdk_window_get_width (tree_view->priv->bin_window);
14577
14578   surface = gdk_window_create_similar_surface (tree_view->priv->bin_window,
14579                                                CAIRO_CONTENT_COLOR,
14580                                                bin_window_width + 2,
14581                                                background_area.height + 2);
14582
14583   cr = cairo_create (surface);
14584
14585   gtk_render_background (context, cr, 0, 0,
14586                          bin_window_width + 2,
14587                          background_area.height + 2);
14588
14589   rtl = gtk_widget_get_direction (GTK_WIDGET (tree_view)) == GTK_TEXT_DIR_RTL;
14590
14591   for (list = (rtl ? g_list_last (tree_view->priv->columns) : g_list_first (tree_view->priv->columns));
14592       list;
14593       list = (rtl ? list->prev : list->next))
14594     {
14595       GtkTreeViewColumn *column = list->data;
14596       GdkRectangle cell_area;
14597       gint vertical_separator;
14598
14599       if (!gtk_tree_view_column_get_visible (column))
14600         continue;
14601
14602       gtk_tree_view_column_cell_set_cell_data (column, tree_view->priv->model, &iter,
14603                                                GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_PARENT),
14604                                                node->children?TRUE:FALSE);
14605
14606       background_area.x = cell_offset;
14607       background_area.width = gtk_tree_view_column_get_width (column);
14608
14609       gtk_widget_style_get (widget,
14610                             "vertical-separator", &vertical_separator,
14611                             NULL);
14612
14613       cell_area = background_area;
14614
14615       cell_area.y += vertical_separator / 2;
14616       cell_area.height -= vertical_separator;
14617
14618       if (gtk_tree_view_is_expander_column (tree_view, column))
14619         {
14620           if (!rtl)
14621             cell_area.x += (depth - 1) * tree_view->priv->level_indentation;
14622           cell_area.width -= (depth - 1) * tree_view->priv->level_indentation;
14623
14624           if (gtk_tree_view_draw_expanders (tree_view))
14625             {
14626               if (!rtl)
14627                 cell_area.x += depth * tree_view->priv->expander_size;
14628               cell_area.width -= depth * tree_view->priv->expander_size;
14629             }
14630         }
14631
14632       if (gtk_tree_view_column_cell_is_visible (column))
14633         {
14634           if (is_separator)
14635             {
14636               gtk_style_context_save (context);
14637               gtk_style_context_add_class (context, GTK_STYLE_CLASS_SEPARATOR);
14638
14639               gtk_render_line (context, cr,
14640                                cell_area.x,
14641                                cell_area.y + cell_area.height / 2,
14642                                cell_area.x + cell_area.width,
14643                                cell_area.y + cell_area.height / 2);
14644
14645               gtk_style_context_restore (context);
14646             }
14647           else
14648             {
14649               _gtk_tree_view_column_cell_render (column,
14650                                                  cr,
14651                                                  &background_area,
14652                                                  &cell_area,
14653                                                  0, FALSE);
14654             }
14655         }
14656       cell_offset += gtk_tree_view_column_get_width (column);
14657     }
14658
14659   cairo_set_source_rgb (cr, 0, 0, 0);
14660   cairo_rectangle (cr,
14661                    0.5, 0.5,
14662                    bin_window_width + 1,
14663                    background_area.height + 1);
14664   cairo_set_line_width (cr, 1.0);
14665   cairo_stroke (cr);
14666
14667   cairo_destroy (cr);
14668
14669   cairo_surface_set_device_offset (surface, 2, 2);
14670
14671   gtk_style_context_restore (context);
14672
14673   return surface;
14674 }
14675
14676
14677 /**
14678  * gtk_tree_view_set_destroy_count_func:
14679  * @tree_view: A #GtkTreeView
14680  * @func: (allow-none): Function to be called when a view row is destroyed, or %NULL
14681  * @data: (allow-none): User data to be passed to @func, or %NULL
14682  * @destroy: (allow-none): Destroy notifier for @data, or %NULL
14683  *
14684  * This function should almost never be used.  It is meant for private use by
14685  * ATK for determining the number of visible children that are removed when the
14686  * user collapses a row, or a row is deleted.
14687  **/
14688 void
14689 gtk_tree_view_set_destroy_count_func (GtkTreeView             *tree_view,
14690                                       GtkTreeDestroyCountFunc  func,
14691                                       gpointer                 data,
14692                                       GDestroyNotify           destroy)
14693 {
14694   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
14695
14696   if (tree_view->priv->destroy_count_destroy)
14697     tree_view->priv->destroy_count_destroy (tree_view->priv->destroy_count_data);
14698
14699   tree_view->priv->destroy_count_func = func;
14700   tree_view->priv->destroy_count_data = data;
14701   tree_view->priv->destroy_count_destroy = destroy;
14702 }
14703
14704
14705 /*
14706  * Interactive search
14707  */
14708
14709 /**
14710  * gtk_tree_view_set_enable_search:
14711  * @tree_view: A #GtkTreeView
14712  * @enable_search: %TRUE, if the user can search interactively
14713  *
14714  * If @enable_search is set, then the user can type in text to search through
14715  * the tree interactively (this is sometimes called "typeahead find").
14716  *
14717  * Note that even if this is %FALSE, the user can still initiate a search
14718  * using the "start-interactive-search" key binding.
14719  */
14720 void
14721 gtk_tree_view_set_enable_search (GtkTreeView *tree_view,
14722                                  gboolean     enable_search)
14723 {
14724   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
14725
14726   enable_search = !!enable_search;
14727
14728   if (tree_view->priv->enable_search != enable_search)
14729     {
14730        tree_view->priv->enable_search = enable_search;
14731        g_object_notify (G_OBJECT (tree_view), "enable-search");
14732     }
14733 }
14734
14735 /**
14736  * gtk_tree_view_get_enable_search:
14737  * @tree_view: A #GtkTreeView
14738  *
14739  * Returns whether or not the tree allows to start interactive searching
14740  * by typing in text.
14741  *
14742  * Return value: whether or not to let the user search interactively
14743  */
14744 gboolean
14745 gtk_tree_view_get_enable_search (GtkTreeView *tree_view)
14746 {
14747   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), FALSE);
14748
14749   return tree_view->priv->enable_search;
14750 }
14751
14752
14753 /**
14754  * gtk_tree_view_get_search_column:
14755  * @tree_view: A #GtkTreeView
14756  *
14757  * Gets the column searched on by the interactive search code.
14758  *
14759  * Return value: the column the interactive search code searches in.
14760  */
14761 gint
14762 gtk_tree_view_get_search_column (GtkTreeView *tree_view)
14763 {
14764   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), -1);
14765
14766   return (tree_view->priv->search_column);
14767 }
14768
14769 /**
14770  * gtk_tree_view_set_search_column:
14771  * @tree_view: A #GtkTreeView
14772  * @column: the column of the model to search in, or -1 to disable searching
14773  *
14774  * Sets @column as the column where the interactive search code should
14775  * search in for the current model.
14776  *
14777  * If the search column is set, users can use the "start-interactive-search"
14778  * key binding to bring up search popup. The enable-search property controls
14779  * whether simply typing text will also start an interactive search.
14780  *
14781  * Note that @column refers to a column of the current model. The search
14782  * column is reset to -1 when the model is changed.
14783  */
14784 void
14785 gtk_tree_view_set_search_column (GtkTreeView *tree_view,
14786                                  gint         column)
14787 {
14788   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
14789   g_return_if_fail (column >= -1);
14790
14791   if (tree_view->priv->search_column == column)
14792     return;
14793
14794   tree_view->priv->search_column = column;
14795   g_object_notify (G_OBJECT (tree_view), "search-column");
14796 }
14797
14798 /**
14799  * gtk_tree_view_get_search_equal_func: (skip)
14800  * @tree_view: A #GtkTreeView
14801  *
14802  * Returns the compare function currently in use.
14803  *
14804  * Return value: the currently used compare function for the search code.
14805  */
14806
14807 GtkTreeViewSearchEqualFunc
14808 gtk_tree_view_get_search_equal_func (GtkTreeView *tree_view)
14809 {
14810   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), NULL);
14811
14812   return tree_view->priv->search_equal_func;
14813 }
14814
14815 /**
14816  * gtk_tree_view_set_search_equal_func:
14817  * @tree_view: A #GtkTreeView
14818  * @search_equal_func: the compare function to use during the search
14819  * @search_user_data: (allow-none): user data to pass to @search_equal_func, or %NULL
14820  * @search_destroy: (allow-none): Destroy notifier for @search_user_data, or %NULL
14821  *
14822  * Sets the compare function for the interactive search capabilities; note
14823  * that somewhat like strcmp() returning 0 for equality
14824  * #GtkTreeViewSearchEqualFunc returns %FALSE on matches.
14825  **/
14826 void
14827 gtk_tree_view_set_search_equal_func (GtkTreeView                *tree_view,
14828                                      GtkTreeViewSearchEqualFunc  search_equal_func,
14829                                      gpointer                    search_user_data,
14830                                      GDestroyNotify              search_destroy)
14831 {
14832   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
14833   g_return_if_fail (search_equal_func != NULL);
14834
14835   if (tree_view->priv->search_destroy)
14836     tree_view->priv->search_destroy (tree_view->priv->search_user_data);
14837
14838   tree_view->priv->search_equal_func = search_equal_func;
14839   tree_view->priv->search_user_data = search_user_data;
14840   tree_view->priv->search_destroy = search_destroy;
14841   if (tree_view->priv->search_equal_func == NULL)
14842     tree_view->priv->search_equal_func = gtk_tree_view_search_equal_func;
14843 }
14844
14845 /**
14846  * gtk_tree_view_get_search_entry:
14847  * @tree_view: A #GtkTreeView
14848  *
14849  * Returns the #GtkEntry which is currently in use as interactive search
14850  * entry for @tree_view.  In case the built-in entry is being used, %NULL
14851  * will be returned.
14852  *
14853  * Return value: (transfer none): the entry currently in use as search entry.
14854  *
14855  * Since: 2.10
14856  */
14857 GtkEntry *
14858 gtk_tree_view_get_search_entry (GtkTreeView *tree_view)
14859 {
14860   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), NULL);
14861
14862   if (tree_view->priv->search_custom_entry_set)
14863     return GTK_ENTRY (tree_view->priv->search_entry);
14864
14865   return NULL;
14866 }
14867
14868 /**
14869  * gtk_tree_view_set_search_entry:
14870  * @tree_view: A #GtkTreeView
14871  * @entry: (allow-none): the entry the interactive search code of @tree_view should use or %NULL
14872  *
14873  * Sets the entry which the interactive search code will use for this
14874  * @tree_view.  This is useful when you want to provide a search entry
14875  * in our interface at all time at a fixed position.  Passing %NULL for
14876  * @entry will make the interactive search code use the built-in popup
14877  * entry again.
14878  *
14879  * Since: 2.10
14880  */
14881 void
14882 gtk_tree_view_set_search_entry (GtkTreeView *tree_view,
14883                                 GtkEntry    *entry)
14884 {
14885   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
14886   g_return_if_fail (entry == NULL || GTK_IS_ENTRY (entry));
14887
14888   if (tree_view->priv->search_custom_entry_set)
14889     {
14890       if (tree_view->priv->search_entry_changed_id)
14891         {
14892           g_signal_handler_disconnect (tree_view->priv->search_entry,
14893                                        tree_view->priv->search_entry_changed_id);
14894           tree_view->priv->search_entry_changed_id = 0;
14895         }
14896       g_signal_handlers_disconnect_by_func (tree_view->priv->search_entry,
14897                                             G_CALLBACK (gtk_tree_view_search_key_press_event),
14898                                             tree_view);
14899
14900       g_object_unref (tree_view->priv->search_entry);
14901     }
14902   else if (tree_view->priv->search_window)
14903     {
14904       gtk_widget_destroy (tree_view->priv->search_window);
14905
14906       tree_view->priv->search_window = NULL;
14907     }
14908
14909   if (entry)
14910     {
14911       tree_view->priv->search_entry = g_object_ref (entry);
14912       tree_view->priv->search_custom_entry_set = TRUE;
14913
14914       if (tree_view->priv->search_entry_changed_id == 0)
14915         {
14916           tree_view->priv->search_entry_changed_id =
14917             g_signal_connect (tree_view->priv->search_entry, "changed",
14918                               G_CALLBACK (gtk_tree_view_search_init),
14919                               tree_view);
14920         }
14921
14922         g_signal_connect (tree_view->priv->search_entry, "key-press-event",
14923                           G_CALLBACK (gtk_tree_view_search_key_press_event),
14924                           tree_view);
14925
14926         gtk_tree_view_search_init (tree_view->priv->search_entry, tree_view);
14927     }
14928   else
14929     {
14930       tree_view->priv->search_entry = NULL;
14931       tree_view->priv->search_custom_entry_set = FALSE;
14932     }
14933 }
14934
14935 /**
14936  * gtk_tree_view_set_search_position_func:
14937  * @tree_view: A #GtkTreeView
14938  * @func: (allow-none): the function to use to position the search dialog, or %NULL
14939  *    to use the default search position function
14940  * @data: (allow-none): user data to pass to @func, or %NULL
14941  * @destroy: (allow-none): Destroy notifier for @data, or %NULL
14942  *
14943  * Sets the function to use when positioning the search dialog.
14944  *
14945  * Since: 2.10
14946  **/
14947 void
14948 gtk_tree_view_set_search_position_func (GtkTreeView                   *tree_view,
14949                                         GtkTreeViewSearchPositionFunc  func,
14950                                         gpointer                       user_data,
14951                                         GDestroyNotify                 destroy)
14952 {
14953   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
14954
14955   if (tree_view->priv->search_position_destroy)
14956     tree_view->priv->search_position_destroy (tree_view->priv->search_position_user_data);
14957
14958   tree_view->priv->search_position_func = func;
14959   tree_view->priv->search_position_user_data = user_data;
14960   tree_view->priv->search_position_destroy = destroy;
14961   if (tree_view->priv->search_position_func == NULL)
14962     tree_view->priv->search_position_func = gtk_tree_view_search_position_func;
14963 }
14964
14965 /**
14966  * gtk_tree_view_get_search_position_func: (skip)
14967  * @tree_view: A #GtkTreeView
14968  *
14969  * Returns the positioning function currently in use.
14970  *
14971  * Return value: the currently used function for positioning the search dialog.
14972  *
14973  * Since: 2.10
14974  */
14975 GtkTreeViewSearchPositionFunc
14976 gtk_tree_view_get_search_position_func (GtkTreeView *tree_view)
14977 {
14978   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), NULL);
14979
14980   return tree_view->priv->search_position_func;
14981 }
14982
14983
14984 static void
14985 gtk_tree_view_search_dialog_hide (GtkWidget   *search_dialog,
14986                                   GtkTreeView *tree_view,
14987                                   GdkDevice   *device)
14988 {
14989   if (tree_view->priv->disable_popdown)
14990     return;
14991
14992   if (tree_view->priv->search_entry_changed_id)
14993     {
14994       g_signal_handler_disconnect (tree_view->priv->search_entry,
14995                                    tree_view->priv->search_entry_changed_id);
14996       tree_view->priv->search_entry_changed_id = 0;
14997     }
14998   if (tree_view->priv->typeselect_flush_timeout)
14999     {
15000       g_source_remove (tree_view->priv->typeselect_flush_timeout);
15001       tree_view->priv->typeselect_flush_timeout = 0;
15002     }
15003
15004   if (gtk_widget_get_visible (search_dialog))
15005     {
15006       /* send focus-in event */
15007       send_focus_change (GTK_WIDGET (tree_view->priv->search_entry), device, FALSE);
15008       gtk_widget_hide (search_dialog);
15009       gtk_entry_set_text (GTK_ENTRY (tree_view->priv->search_entry), "");
15010       send_focus_change (GTK_WIDGET (tree_view), device, TRUE);
15011     }
15012 }
15013
15014 static void
15015 gtk_tree_view_search_position_func (GtkTreeView *tree_view,
15016                                     GtkWidget   *search_dialog,
15017                                     gpointer     user_data)
15018 {
15019   gint x, y;
15020   gint tree_x, tree_y;
15021   gint tree_width, tree_height;
15022   GdkWindow *tree_window = gtk_widget_get_window (GTK_WIDGET (tree_view));
15023   GdkScreen *screen = gdk_window_get_screen (tree_window);
15024   GtkRequisition requisition;
15025   gint monitor_num;
15026   GdkRectangle monitor;
15027
15028   monitor_num = gdk_screen_get_monitor_at_window (screen, tree_window);
15029   gdk_screen_get_monitor_geometry (screen, monitor_num, &monitor);
15030
15031   gtk_widget_realize (search_dialog);
15032
15033   gdk_window_get_origin (tree_window, &tree_x, &tree_y);
15034   tree_width = gdk_window_get_width (tree_window);
15035   tree_height = gdk_window_get_height (tree_window);
15036   gtk_widget_get_preferred_size (search_dialog, &requisition, NULL);
15037
15038   if (tree_x + tree_width > gdk_screen_get_width (screen))
15039     x = gdk_screen_get_width (screen) - requisition.width;
15040   else if (tree_x + tree_width - requisition.width < 0)
15041     x = 0;
15042   else
15043     x = tree_x + tree_width - requisition.width;
15044
15045   if (tree_y + tree_height + requisition.height > gdk_screen_get_height (screen))
15046     y = gdk_screen_get_height (screen) - requisition.height;
15047   else if (tree_y + tree_height < 0) /* isn't really possible ... */
15048     y = 0;
15049   else
15050     y = tree_y + tree_height;
15051
15052   gtk_window_move (GTK_WINDOW (search_dialog), x, y);
15053 }
15054
15055 static void
15056 gtk_tree_view_search_disable_popdown (GtkEntry *entry,
15057                                       GtkMenu  *menu,
15058                                       gpointer  data)
15059 {
15060   GtkTreeView *tree_view = (GtkTreeView *)data;
15061
15062   tree_view->priv->disable_popdown = 1;
15063   g_signal_connect (menu, "hide",
15064                     G_CALLBACK (gtk_tree_view_search_enable_popdown), data);
15065 }
15066
15067 /* Because we're visible but offscreen, we just set a flag in the preedit
15068  * callback.
15069  */
15070 static void
15071 gtk_tree_view_search_preedit_changed (GtkIMContext *im_context,
15072                                       GtkTreeView  *tree_view)
15073 {
15074   tree_view->priv->imcontext_changed = 1;
15075   if (tree_view->priv->typeselect_flush_timeout)
15076     {
15077       g_source_remove (tree_view->priv->typeselect_flush_timeout);
15078       tree_view->priv->typeselect_flush_timeout =
15079         gdk_threads_add_timeout (GTK_TREE_VIEW_SEARCH_DIALOG_TIMEOUT,
15080                        (GSourceFunc) gtk_tree_view_search_entry_flush_timeout,
15081                        tree_view);
15082     }
15083
15084 }
15085
15086 static void
15087 gtk_tree_view_search_activate (GtkEntry    *entry,
15088                                GtkTreeView *tree_view)
15089 {
15090   GtkTreePath *path;
15091   GtkRBNode *node;
15092   GtkRBTree *tree;
15093
15094   gtk_tree_view_search_dialog_hide (tree_view->priv->search_window,
15095                                     tree_view,
15096                                     gtk_get_current_event_device ());
15097
15098   /* If we have a row selected and it's the cursor row, we activate
15099    * the row XXX */
15100   if (gtk_tree_row_reference_valid (tree_view->priv->cursor))
15101     {
15102       path = gtk_tree_row_reference_get_path (tree_view->priv->cursor);
15103
15104       _gtk_tree_view_find_node (tree_view, path, &tree, &node);
15105
15106       if (node && GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_SELECTED))
15107         gtk_tree_view_row_activated (tree_view, path, tree_view->priv->focus_column);
15108
15109       gtk_tree_path_free (path);
15110     }
15111 }
15112
15113 static gboolean
15114 gtk_tree_view_real_search_enable_popdown (gpointer data)
15115 {
15116   GtkTreeView *tree_view = (GtkTreeView *)data;
15117
15118   tree_view->priv->disable_popdown = 0;
15119
15120   return FALSE;
15121 }
15122
15123 static void
15124 gtk_tree_view_search_enable_popdown (GtkWidget *widget,
15125                                      gpointer   data)
15126 {
15127   gdk_threads_add_timeout_full (G_PRIORITY_HIGH, 200, gtk_tree_view_real_search_enable_popdown, g_object_ref (data), g_object_unref);
15128 }
15129
15130 static gboolean
15131 gtk_tree_view_search_delete_event (GtkWidget *widget,
15132                                    GdkEventAny *event,
15133                                    GtkTreeView *tree_view)
15134 {
15135   g_return_val_if_fail (GTK_IS_WIDGET (widget), FALSE);
15136
15137   gtk_tree_view_search_dialog_hide (widget, tree_view, NULL);
15138
15139   return TRUE;
15140 }
15141
15142 static gboolean
15143 gtk_tree_view_search_button_press_event (GtkWidget *widget,
15144                                          GdkEventButton *event,
15145                                          GtkTreeView *tree_view)
15146 {
15147   GdkDevice *keyb_device;
15148
15149   g_return_val_if_fail (GTK_IS_WIDGET (widget), FALSE);
15150
15151   keyb_device = gdk_device_get_associated_device (event->device);
15152   gtk_tree_view_search_dialog_hide (widget, tree_view, keyb_device);
15153
15154   if (event->window == tree_view->priv->bin_window)
15155     gtk_tree_view_button_press (GTK_WIDGET (tree_view), event);
15156
15157   return TRUE;
15158 }
15159
15160 static gboolean
15161 gtk_tree_view_search_scroll_event (GtkWidget *widget,
15162                                    GdkEventScroll *event,
15163                                    GtkTreeView *tree_view)
15164 {
15165   gboolean retval = FALSE;
15166
15167   if (event->direction == GDK_SCROLL_UP)
15168     {
15169       gtk_tree_view_search_move (widget, tree_view, TRUE);
15170       retval = TRUE;
15171     }
15172   else if (event->direction == GDK_SCROLL_DOWN)
15173     {
15174       gtk_tree_view_search_move (widget, tree_view, FALSE);
15175       retval = TRUE;
15176     }
15177
15178   /* renew the flush timeout */
15179   if (retval && tree_view->priv->typeselect_flush_timeout
15180       && !tree_view->priv->search_custom_entry_set)
15181     {
15182       g_source_remove (tree_view->priv->typeselect_flush_timeout);
15183       tree_view->priv->typeselect_flush_timeout =
15184         gdk_threads_add_timeout (GTK_TREE_VIEW_SEARCH_DIALOG_TIMEOUT,
15185                        (GSourceFunc) gtk_tree_view_search_entry_flush_timeout,
15186                        tree_view);
15187     }
15188
15189   return retval;
15190 }
15191
15192 static gboolean
15193 gtk_tree_view_search_key_press_event (GtkWidget *widget,
15194                                       GdkEventKey *event,
15195                                       GtkTreeView *tree_view)
15196 {
15197   GdkModifierType default_accel;
15198   gboolean        retval = FALSE;
15199
15200   g_return_val_if_fail (GTK_IS_WIDGET (widget), FALSE);
15201   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), FALSE);
15202
15203   /* close window and cancel the search */
15204   if (!tree_view->priv->search_custom_entry_set
15205       && (event->keyval == GDK_KEY_Escape ||
15206           event->keyval == GDK_KEY_Tab ||
15207             event->keyval == GDK_KEY_KP_Tab ||
15208             event->keyval == GDK_KEY_ISO_Left_Tab))
15209     {
15210       gtk_tree_view_search_dialog_hide (widget, tree_view,
15211                                         gdk_event_get_device ((GdkEvent *) event));
15212       return TRUE;
15213     }
15214
15215   default_accel = gtk_widget_get_modifier_mask (widget,
15216                                                 GDK_MODIFIER_INTENT_PRIMARY_ACCELERATOR);
15217
15218   /* select previous matching iter */
15219   if (event->keyval == GDK_KEY_Up || event->keyval == GDK_KEY_KP_Up)
15220     {
15221       if (!gtk_tree_view_search_move (widget, tree_view, TRUE))
15222         gtk_widget_error_bell (widget);
15223
15224       retval = TRUE;
15225     }
15226
15227   if (((event->state & (default_accel | GDK_SHIFT_MASK)) == (default_accel | GDK_SHIFT_MASK))
15228       && (event->keyval == GDK_KEY_g || event->keyval == GDK_KEY_G))
15229     {
15230       if (!gtk_tree_view_search_move (widget, tree_view, TRUE))
15231         gtk_widget_error_bell (widget);
15232
15233       retval = TRUE;
15234     }
15235
15236   /* select next matching iter */
15237   if (event->keyval == GDK_KEY_Down || event->keyval == GDK_KEY_KP_Down)
15238     {
15239       if (!gtk_tree_view_search_move (widget, tree_view, FALSE))
15240         gtk_widget_error_bell (widget);
15241
15242       retval = TRUE;
15243     }
15244
15245   if (((event->state & (default_accel | GDK_SHIFT_MASK)) == default_accel)
15246       && (event->keyval == GDK_KEY_g || event->keyval == GDK_KEY_G))
15247     {
15248       if (!gtk_tree_view_search_move (widget, tree_view, FALSE))
15249         gtk_widget_error_bell (widget);
15250
15251       retval = TRUE;
15252     }
15253
15254   /* renew the flush timeout */
15255   if (retval && tree_view->priv->typeselect_flush_timeout
15256       && !tree_view->priv->search_custom_entry_set)
15257     {
15258       g_source_remove (tree_view->priv->typeselect_flush_timeout);
15259       tree_view->priv->typeselect_flush_timeout =
15260         gdk_threads_add_timeout (GTK_TREE_VIEW_SEARCH_DIALOG_TIMEOUT,
15261                        (GSourceFunc) gtk_tree_view_search_entry_flush_timeout,
15262                        tree_view);
15263     }
15264
15265   return retval;
15266 }
15267
15268 /*  this function returns FALSE if there is a search string but
15269  *  nothing was found, and TRUE otherwise.
15270  */
15271 static gboolean
15272 gtk_tree_view_search_move (GtkWidget   *window,
15273                            GtkTreeView *tree_view,
15274                            gboolean     up)
15275 {
15276   gboolean ret;
15277   gint len;
15278   gint count = 0;
15279   const gchar *text;
15280   GtkTreeIter iter;
15281   GtkTreeModel *model;
15282   GtkTreeSelection *selection;
15283
15284   text = gtk_entry_get_text (GTK_ENTRY (tree_view->priv->search_entry));
15285
15286   g_return_val_if_fail (text != NULL, FALSE);
15287
15288   len = strlen (text);
15289
15290   if (up && tree_view->priv->selected_iter == 1)
15291     return strlen (text) < 1;
15292
15293   len = strlen (text);
15294
15295   if (len < 1)
15296     return TRUE;
15297
15298   model = gtk_tree_view_get_model (tree_view);
15299   selection = gtk_tree_view_get_selection (tree_view);
15300
15301   /* search */
15302   gtk_tree_selection_unselect_all (selection);
15303   if (!gtk_tree_model_get_iter_first (model, &iter))
15304     return TRUE;
15305
15306   ret = gtk_tree_view_search_iter (model, selection, &iter, text,
15307                                    &count, up?((tree_view->priv->selected_iter) - 1):((tree_view->priv->selected_iter + 1)));
15308
15309   if (ret)
15310     {
15311       /* found */
15312       tree_view->priv->selected_iter += up?(-1):(1);
15313       return TRUE;
15314     }
15315   else
15316     {
15317       /* return to old iter */
15318       count = 0;
15319       gtk_tree_model_get_iter_first (model, &iter);
15320       gtk_tree_view_search_iter (model, selection,
15321                                  &iter, text,
15322                                  &count, tree_view->priv->selected_iter);
15323       return FALSE;
15324     }
15325 }
15326
15327 static gboolean
15328 gtk_tree_view_search_equal_func (GtkTreeModel *model,
15329                                  gint          column,
15330                                  const gchar  *key,
15331                                  GtkTreeIter  *iter,
15332                                  gpointer      search_data)
15333 {
15334   gboolean retval = TRUE;
15335   const gchar *str;
15336   gchar *normalized_string;
15337   gchar *normalized_key;
15338   gchar *case_normalized_string = NULL;
15339   gchar *case_normalized_key = NULL;
15340   GValue value = G_VALUE_INIT;
15341   GValue transformed = G_VALUE_INIT;
15342
15343   gtk_tree_model_get_value (model, iter, column, &value);
15344
15345   g_value_init (&transformed, G_TYPE_STRING);
15346
15347   if (!g_value_transform (&value, &transformed))
15348     {
15349       g_value_unset (&value);
15350       return TRUE;
15351     }
15352
15353   g_value_unset (&value);
15354
15355   str = g_value_get_string (&transformed);
15356   if (!str)
15357     {
15358       g_value_unset (&transformed);
15359       return TRUE;
15360     }
15361
15362   normalized_string = g_utf8_normalize (str, -1, G_NORMALIZE_ALL);
15363   normalized_key = g_utf8_normalize (key, -1, G_NORMALIZE_ALL);
15364
15365   if (normalized_string && normalized_key)
15366     {
15367       case_normalized_string = g_utf8_casefold (normalized_string, -1);
15368       case_normalized_key = g_utf8_casefold (normalized_key, -1);
15369
15370       if (strncmp (case_normalized_key, case_normalized_string, strlen (case_normalized_key)) == 0)
15371         retval = FALSE;
15372     }
15373
15374   g_value_unset (&transformed);
15375   g_free (normalized_key);
15376   g_free (normalized_string);
15377   g_free (case_normalized_key);
15378   g_free (case_normalized_string);
15379
15380   return retval;
15381 }
15382
15383 static gboolean
15384 gtk_tree_view_search_iter (GtkTreeModel     *model,
15385                            GtkTreeSelection *selection,
15386                            GtkTreeIter      *iter,
15387                            const gchar      *text,
15388                            gint             *count,
15389                            gint              n)
15390 {
15391   GtkRBTree *tree = NULL;
15392   GtkRBNode *node = NULL;
15393   GtkTreePath *path;
15394
15395   GtkTreeView *tree_view = gtk_tree_selection_get_tree_view (selection);
15396
15397   path = gtk_tree_model_get_path (model, iter);
15398   _gtk_tree_view_find_node (tree_view, path, &tree, &node);
15399
15400   do
15401     {
15402       if (! tree_view->priv->search_equal_func (model, tree_view->priv->search_column, text, iter, tree_view->priv->search_user_data))
15403         {
15404           (*count)++;
15405           if (*count == n)
15406             {
15407               gtk_tree_view_scroll_to_cell (tree_view, path, NULL,
15408                                             TRUE, 0.5, 0.0);
15409               gtk_tree_selection_select_iter (selection, iter);
15410               gtk_tree_view_real_set_cursor (tree_view, path, FALSE, TRUE);
15411
15412               if (path)
15413                 gtk_tree_path_free (path);
15414
15415               return TRUE;
15416             }
15417         }
15418
15419       if (node->children)
15420         {
15421           gboolean has_child;
15422           GtkTreeIter tmp;
15423
15424           tree = node->children;
15425           node = tree->root;
15426
15427           while (node->left != tree->nil)
15428             node = node->left;
15429
15430           tmp = *iter;
15431           has_child = gtk_tree_model_iter_children (model, iter, &tmp);
15432           gtk_tree_path_down (path);
15433
15434           /* sanity check */
15435           TREE_VIEW_INTERNAL_ASSERT (has_child, FALSE);
15436         }
15437       else
15438         {
15439           gboolean done = FALSE;
15440
15441           do
15442             {
15443               node = _gtk_rbtree_next (tree, node);
15444
15445               if (node)
15446                 {
15447                   gboolean has_next;
15448
15449                   has_next = gtk_tree_model_iter_next (model, iter);
15450
15451                   done = TRUE;
15452                   gtk_tree_path_next (path);
15453
15454                   /* sanity check */
15455                   TREE_VIEW_INTERNAL_ASSERT (has_next, FALSE);
15456                 }
15457               else
15458                 {
15459                   gboolean has_parent;
15460                   GtkTreeIter tmp_iter = *iter;
15461
15462                   node = tree->parent_node;
15463                   tree = tree->parent_tree;
15464
15465                   if (!tree)
15466                     {
15467                       if (path)
15468                         gtk_tree_path_free (path);
15469
15470                       /* we've run out of tree, done with this func */
15471                       return FALSE;
15472                     }
15473
15474                   has_parent = gtk_tree_model_iter_parent (model,
15475                                                            iter,
15476                                                            &tmp_iter);
15477                   gtk_tree_path_up (path);
15478
15479                   /* sanity check */
15480                   TREE_VIEW_INTERNAL_ASSERT (has_parent, FALSE);
15481                 }
15482             }
15483           while (!done);
15484         }
15485     }
15486   while (1);
15487
15488   return FALSE;
15489 }
15490
15491 static void
15492 gtk_tree_view_search_init (GtkWidget   *entry,
15493                            GtkTreeView *tree_view)
15494 {
15495   gint ret;
15496   gint count = 0;
15497   const gchar *text;
15498   GtkTreeIter iter;
15499   GtkTreeModel *model;
15500   GtkTreeSelection *selection;
15501
15502   g_return_if_fail (GTK_IS_ENTRY (entry));
15503   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
15504
15505   text = gtk_entry_get_text (GTK_ENTRY (entry));
15506
15507   model = gtk_tree_view_get_model (tree_view);
15508   selection = gtk_tree_view_get_selection (tree_view);
15509
15510   /* search */
15511   gtk_tree_selection_unselect_all (selection);
15512   if (tree_view->priv->typeselect_flush_timeout
15513       && !tree_view->priv->search_custom_entry_set)
15514     {
15515       g_source_remove (tree_view->priv->typeselect_flush_timeout);
15516       tree_view->priv->typeselect_flush_timeout =
15517         gdk_threads_add_timeout (GTK_TREE_VIEW_SEARCH_DIALOG_TIMEOUT,
15518                        (GSourceFunc) gtk_tree_view_search_entry_flush_timeout,
15519                        tree_view);
15520     }
15521
15522   if (*text == '\0')
15523     return;
15524
15525   if (!gtk_tree_model_get_iter_first (model, &iter))
15526     return;
15527
15528   ret = gtk_tree_view_search_iter (model, selection,
15529                                    &iter, text,
15530                                    &count, 1);
15531
15532   if (ret)
15533     tree_view->priv->selected_iter = 1;
15534 }
15535
15536 void
15537 _gtk_tree_view_remove_editable (GtkTreeView       *tree_view,
15538                                 GtkTreeViewColumn *column,
15539                                 GtkCellEditable   *cell_editable)
15540 {
15541   if (tree_view->priv->edited_column == NULL)
15542     return;
15543
15544   g_return_if_fail (column == tree_view->priv->edited_column);
15545
15546   tree_view->priv->edited_column = NULL;
15547
15548   if (gtk_widget_has_focus (GTK_WIDGET (cell_editable)))
15549     gtk_widget_grab_focus (GTK_WIDGET (tree_view));
15550
15551   gtk_container_remove (GTK_CONTAINER (tree_view),
15552                         GTK_WIDGET (cell_editable));
15553
15554   /* FIXME should only redraw a single node */
15555   gtk_widget_queue_draw (GTK_WIDGET (tree_view));
15556 }
15557
15558 static gboolean
15559 gtk_tree_view_start_editing (GtkTreeView *tree_view,
15560                              GtkTreePath *cursor_path,
15561                              gboolean     edit_only)
15562 {
15563   GtkTreeIter iter;
15564   GdkRectangle cell_area;
15565   GtkTreeViewColumn *focus_column;
15566   guint flags = 0; /* can be 0, as the flags are primarily for rendering */
15567   gint retval = FALSE;
15568   GtkRBTree *cursor_tree;
15569   GtkRBNode *cursor_node;
15570
15571   g_assert (tree_view->priv->focus_column);
15572   focus_column = tree_view->priv->focus_column;
15573
15574   if (!gtk_widget_get_realized (GTK_WIDGET (tree_view)))
15575     return FALSE;
15576
15577   if (_gtk_tree_view_find_node (tree_view, cursor_path, &cursor_tree, &cursor_node) ||
15578       cursor_node == NULL)
15579     return FALSE;
15580
15581   gtk_tree_model_get_iter (tree_view->priv->model, &iter, cursor_path);
15582
15583   validate_row (tree_view, cursor_tree, cursor_node, &iter, cursor_path);
15584
15585   gtk_tree_view_column_cell_set_cell_data (focus_column,
15586                                            tree_view->priv->model,
15587                                            &iter,
15588                                            GTK_RBNODE_FLAG_SET (cursor_node, GTK_RBNODE_IS_PARENT),
15589                                            cursor_node->children ? TRUE : FALSE);
15590   gtk_tree_view_get_cell_area (tree_view,
15591                                cursor_path,
15592                                focus_column,
15593                                &cell_area);
15594
15595   if (gtk_cell_area_activate (gtk_cell_layout_get_area (GTK_CELL_LAYOUT (focus_column)),
15596                               _gtk_tree_view_column_get_context (focus_column),
15597                               GTK_WIDGET (tree_view),
15598                               &cell_area,
15599                               flags, edit_only))
15600     retval = TRUE;
15601
15602   return retval;
15603 }
15604
15605 void
15606 _gtk_tree_view_add_editable (GtkTreeView       *tree_view,
15607                              GtkTreeViewColumn *column,
15608                              GtkTreePath       *path,
15609                              GtkCellEditable   *cell_editable,
15610                              GdkRectangle      *cell_area)
15611 {
15612   gint pre_val = gtk_adjustment_get_value (tree_view->priv->vadjustment);
15613   GtkRequisition requisition;
15614
15615   tree_view->priv->edited_column = column;
15616
15617   gtk_tree_view_real_set_cursor (tree_view, path, FALSE, TRUE);
15618   cell_area->y += pre_val - (int)gtk_adjustment_get_value (tree_view->priv->vadjustment);
15619
15620   gtk_widget_get_preferred_size (GTK_WIDGET (cell_editable),
15621                                  &requisition, NULL);
15622
15623   tree_view->priv->draw_keyfocus = TRUE;
15624
15625   if (requisition.height < cell_area->height)
15626     {
15627       gint diff = cell_area->height - requisition.height;
15628       gtk_tree_view_put (tree_view,
15629                          GTK_WIDGET (cell_editable),
15630                          cell_area->x, cell_area->y + diff/2,
15631                          cell_area->width, requisition.height);
15632     }
15633   else
15634     {
15635       gtk_tree_view_put (tree_view,
15636                          GTK_WIDGET (cell_editable),
15637                          cell_area->x, cell_area->y,
15638                          cell_area->width, cell_area->height);
15639     }
15640 }
15641
15642 static void
15643 gtk_tree_view_stop_editing (GtkTreeView *tree_view,
15644                             gboolean     cancel_editing)
15645 {
15646   GtkTreeViewColumn *column;
15647
15648   if (tree_view->priv->edited_column == NULL)
15649     return;
15650
15651   /*
15652    * This is very evil. We need to do this, because
15653    * gtk_cell_editable_editing_done may trigger gtk_tree_view_row_changed
15654    * later on. If gtk_tree_view_row_changed notices
15655    * tree_view->priv->edited_column != NULL, it'll call
15656    * gtk_tree_view_stop_editing again. Bad things will happen then.
15657    *
15658    * Please read that again if you intend to modify anything here.
15659    */
15660
15661   column = tree_view->priv->edited_column;
15662   gtk_cell_area_stop_editing (gtk_cell_layout_get_area (GTK_CELL_LAYOUT (column)), cancel_editing);
15663   tree_view->priv->edited_column = NULL;
15664 }
15665
15666
15667 /**
15668  * gtk_tree_view_set_hover_selection:
15669  * @tree_view: a #GtkTreeView
15670  * @hover: %TRUE to enable hover selection mode
15671  *
15672  * Enables or disables the hover selection mode of @tree_view.
15673  * Hover selection makes the selected row follow the pointer.
15674  * Currently, this works only for the selection modes
15675  * %GTK_SELECTION_SINGLE and %GTK_SELECTION_BROWSE.
15676  *
15677  * Since: 2.6
15678  **/
15679 void
15680 gtk_tree_view_set_hover_selection (GtkTreeView *tree_view,
15681                                    gboolean     hover)
15682 {
15683   hover = hover != FALSE;
15684
15685   if (hover != tree_view->priv->hover_selection)
15686     {
15687       tree_view->priv->hover_selection = hover;
15688
15689       g_object_notify (G_OBJECT (tree_view), "hover-selection");
15690     }
15691 }
15692
15693 /**
15694  * gtk_tree_view_get_hover_selection:
15695  * @tree_view: a #GtkTreeView
15696  *
15697  * Returns whether hover selection mode is turned on for @tree_view.
15698  *
15699  * Return value: %TRUE if @tree_view is in hover selection mode
15700  *
15701  * Since: 2.6
15702  **/
15703 gboolean
15704 gtk_tree_view_get_hover_selection (GtkTreeView *tree_view)
15705 {
15706   return tree_view->priv->hover_selection;
15707 }
15708
15709 /**
15710  * gtk_tree_view_set_hover_expand:
15711  * @tree_view: a #GtkTreeView
15712  * @expand: %TRUE to enable hover selection mode
15713  *
15714  * Enables of disables the hover expansion mode of @tree_view.
15715  * Hover expansion makes rows expand or collapse if the pointer
15716  * moves over them.
15717  *
15718  * Since: 2.6
15719  **/
15720 void
15721 gtk_tree_view_set_hover_expand (GtkTreeView *tree_view,
15722                                 gboolean     expand)
15723 {
15724   expand = expand != FALSE;
15725
15726   if (expand != tree_view->priv->hover_expand)
15727     {
15728       tree_view->priv->hover_expand = expand;
15729
15730       g_object_notify (G_OBJECT (tree_view), "hover-expand");
15731     }
15732 }
15733
15734 /**
15735  * gtk_tree_view_get_hover_expand:
15736  * @tree_view: a #GtkTreeView
15737  *
15738  * Returns whether hover expansion mode is turned on for @tree_view.
15739  *
15740  * Return value: %TRUE if @tree_view is in hover expansion mode
15741  *
15742  * Since: 2.6
15743  **/
15744 gboolean
15745 gtk_tree_view_get_hover_expand (GtkTreeView *tree_view)
15746 {
15747   return tree_view->priv->hover_expand;
15748 }
15749
15750 /**
15751  * gtk_tree_view_set_rubber_banding:
15752  * @tree_view: a #GtkTreeView
15753  * @enable: %TRUE to enable rubber banding
15754  *
15755  * Enables or disables rubber banding in @tree_view.  If the selection mode
15756  * is #GTK_SELECTION_MULTIPLE, rubber banding will allow the user to select
15757  * multiple rows by dragging the mouse.
15758  *
15759  * Since: 2.10
15760  **/
15761 void
15762 gtk_tree_view_set_rubber_banding (GtkTreeView *tree_view,
15763                                   gboolean     enable)
15764 {
15765   enable = enable != FALSE;
15766
15767   if (enable != tree_view->priv->rubber_banding_enable)
15768     {
15769       tree_view->priv->rubber_banding_enable = enable;
15770
15771       g_object_notify (G_OBJECT (tree_view), "rubber-banding");
15772     }
15773 }
15774
15775 /**
15776  * gtk_tree_view_get_rubber_banding:
15777  * @tree_view: a #GtkTreeView
15778  *
15779  * Returns whether rubber banding is turned on for @tree_view.  If the
15780  * selection mode is #GTK_SELECTION_MULTIPLE, rubber banding will allow the
15781  * user to select multiple rows by dragging the mouse.
15782  *
15783  * Return value: %TRUE if rubber banding in @tree_view is enabled.
15784  *
15785  * Since: 2.10
15786  **/
15787 gboolean
15788 gtk_tree_view_get_rubber_banding (GtkTreeView *tree_view)
15789 {
15790   return tree_view->priv->rubber_banding_enable;
15791 }
15792
15793 /**
15794  * gtk_tree_view_is_rubber_banding_active:
15795  * @tree_view: a #GtkTreeView
15796  *
15797  * Returns whether a rubber banding operation is currently being done
15798  * in @tree_view.
15799  *
15800  * Return value: %TRUE if a rubber banding operation is currently being
15801  * done in @tree_view.
15802  *
15803  * Since: 2.12
15804  **/
15805 gboolean
15806 gtk_tree_view_is_rubber_banding_active (GtkTreeView *tree_view)
15807 {
15808   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), FALSE);
15809
15810   if (tree_view->priv->rubber_banding_enable
15811       && tree_view->priv->rubber_band_status == RUBBER_BAND_ACTIVE)
15812     return TRUE;
15813
15814   return FALSE;
15815 }
15816
15817 /**
15818  * gtk_tree_view_get_row_separator_func: (skip)
15819  * @tree_view: a #GtkTreeView
15820  *
15821  * Returns the current row separator function.
15822  *
15823  * Return value: the current row separator function.
15824  *
15825  * Since: 2.6
15826  **/
15827 GtkTreeViewRowSeparatorFunc
15828 gtk_tree_view_get_row_separator_func (GtkTreeView *tree_view)
15829 {
15830   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), NULL);
15831
15832   return tree_view->priv->row_separator_func;
15833 }
15834
15835 /**
15836  * gtk_tree_view_set_row_separator_func:
15837  * @tree_view: a #GtkTreeView
15838  * @func: (allow-none): a #GtkTreeViewRowSeparatorFunc
15839  * @data: (allow-none): user data to pass to @func, or %NULL
15840  * @destroy: (allow-none): destroy notifier for @data, or %NULL
15841  *
15842  * Sets the row separator function, which is used to determine
15843  * whether a row should be drawn as a separator. If the row separator
15844  * function is %NULL, no separators are drawn. This is the default value.
15845  *
15846  * Since: 2.6
15847  **/
15848 void
15849 gtk_tree_view_set_row_separator_func (GtkTreeView                 *tree_view,
15850                                       GtkTreeViewRowSeparatorFunc  func,
15851                                       gpointer                     data,
15852                                       GDestroyNotify               destroy)
15853 {
15854   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
15855
15856   if (tree_view->priv->row_separator_destroy)
15857     tree_view->priv->row_separator_destroy (tree_view->priv->row_separator_data);
15858
15859   tree_view->priv->row_separator_func = func;
15860   tree_view->priv->row_separator_data = data;
15861   tree_view->priv->row_separator_destroy = destroy;
15862
15863   /* Have the tree recalculate heights */
15864   _gtk_rbtree_mark_invalid (tree_view->priv->tree);
15865   gtk_widget_queue_resize (GTK_WIDGET (tree_view));
15866 }
15867
15868
15869 static void
15870 gtk_tree_view_grab_notify (GtkWidget *widget,
15871                            gboolean   was_grabbed)
15872 {
15873   GtkTreeView *tree_view = GTK_TREE_VIEW (widget);
15874
15875   tree_view->priv->in_grab = !was_grabbed;
15876
15877   if (!was_grabbed)
15878     {
15879       tree_view->priv->pressed_button = -1;
15880
15881       if (tree_view->priv->rubber_band_status)
15882         gtk_tree_view_stop_rubber_band (tree_view);
15883     }
15884 }
15885
15886 static void
15887 gtk_tree_view_state_flags_changed (GtkWidget     *widget,
15888                                    GtkStateFlags  previous_state)
15889 {
15890   if (gtk_widget_get_realized (widget))
15891     {
15892       GtkTreeView *tree_view = GTK_TREE_VIEW (widget);
15893       GtkStyleContext *context;
15894
15895       context = gtk_widget_get_style_context (widget);
15896       gtk_style_context_set_background (context, tree_view->priv->bin_window);
15897     }
15898
15899   gtk_widget_queue_draw (widget);
15900 }
15901
15902 /**
15903  * gtk_tree_view_get_grid_lines:
15904  * @tree_view: a #GtkTreeView
15905  *
15906  * Returns which grid lines are enabled in @tree_view.
15907  *
15908  * Return value: a #GtkTreeViewGridLines value indicating which grid lines
15909  * are enabled.
15910  *
15911  * Since: 2.10
15912  */
15913 GtkTreeViewGridLines
15914 gtk_tree_view_get_grid_lines (GtkTreeView *tree_view)
15915 {
15916   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), 0);
15917
15918   return tree_view->priv->grid_lines;
15919 }
15920
15921 /**
15922  * gtk_tree_view_set_grid_lines:
15923  * @tree_view: a #GtkTreeView
15924  * @grid_lines: a #GtkTreeViewGridLines value indicating which grid lines to
15925  * enable.
15926  *
15927  * Sets which grid lines to draw in @tree_view.
15928  *
15929  * Since: 2.10
15930  */
15931 void
15932 gtk_tree_view_set_grid_lines (GtkTreeView           *tree_view,
15933                               GtkTreeViewGridLines   grid_lines)
15934 {
15935   GtkTreeViewPrivate *priv;
15936   GtkWidget *widget;
15937   GtkTreeViewGridLines old_grid_lines;
15938
15939   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
15940
15941   priv = tree_view->priv;
15942   widget = GTK_WIDGET (tree_view);
15943
15944   old_grid_lines = priv->grid_lines;
15945   priv->grid_lines = grid_lines;
15946
15947   if (gtk_widget_get_realized (widget))
15948     {
15949       if (grid_lines == GTK_TREE_VIEW_GRID_LINES_NONE &&
15950           priv->grid_line_width)
15951         {
15952           priv->grid_line_width = 0;
15953         }
15954
15955       if (grid_lines != GTK_TREE_VIEW_GRID_LINES_NONE &&
15956           !priv->grid_line_width)
15957         {
15958           gint8 *dash_list;
15959
15960           gtk_widget_style_get (widget,
15961                                 "grid-line-width", &priv->grid_line_width,
15962                                 "grid-line-pattern", (gchar *)&dash_list,
15963                                 NULL);
15964
15965           if (dash_list)
15966             {
15967               priv->grid_line_dashes[0] = dash_list[0];
15968               if (dash_list[0])
15969                 priv->grid_line_dashes[1] = dash_list[1];
15970
15971               g_free (dash_list);
15972             }
15973           else
15974             {
15975               priv->grid_line_dashes[0] = 1;
15976               priv->grid_line_dashes[1] = 1;
15977             }
15978         }
15979     }
15980
15981   if (old_grid_lines != grid_lines)
15982     {
15983       gtk_widget_queue_draw (GTK_WIDGET (tree_view));
15984
15985       g_object_notify (G_OBJECT (tree_view), "enable-grid-lines");
15986     }
15987 }
15988
15989 /**
15990  * gtk_tree_view_get_enable_tree_lines:
15991  * @tree_view: a #GtkTreeView.
15992  *
15993  * Returns whether or not tree lines are drawn in @tree_view.
15994  *
15995  * Return value: %TRUE if tree lines are drawn in @tree_view, %FALSE
15996  * otherwise.
15997  *
15998  * Since: 2.10
15999  */
16000 gboolean
16001 gtk_tree_view_get_enable_tree_lines (GtkTreeView *tree_view)
16002 {
16003   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), FALSE);
16004
16005   return tree_view->priv->tree_lines_enabled;
16006 }
16007
16008 /**
16009  * gtk_tree_view_set_enable_tree_lines:
16010  * @tree_view: a #GtkTreeView
16011  * @enabled: %TRUE to enable tree line drawing, %FALSE otherwise.
16012  *
16013  * Sets whether to draw lines interconnecting the expanders in @tree_view.
16014  * This does not have any visible effects for lists.
16015  *
16016  * Since: 2.10
16017  */
16018 void
16019 gtk_tree_view_set_enable_tree_lines (GtkTreeView *tree_view,
16020                                      gboolean     enabled)
16021 {
16022   GtkTreeViewPrivate *priv;
16023   GtkWidget *widget;
16024   gboolean was_enabled;
16025
16026   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
16027
16028   enabled = enabled != FALSE;
16029
16030   priv = tree_view->priv;
16031   widget = GTK_WIDGET (tree_view);
16032
16033   was_enabled = priv->tree_lines_enabled;
16034
16035   priv->tree_lines_enabled = enabled;
16036
16037   if (gtk_widget_get_realized (widget))
16038     {
16039       if (!enabled && priv->tree_line_width)
16040         {
16041           priv->tree_line_width = 0;
16042         }
16043
16044       if (enabled && !priv->tree_line_width)
16045         {
16046           gint8 *dash_list;
16047           gtk_widget_style_get (widget,
16048                                 "tree-line-width", &priv->tree_line_width,
16049                                 "tree-line-pattern", (gchar *)&dash_list,
16050                                 NULL);
16051
16052           if (dash_list)
16053             {
16054               priv->tree_line_dashes[0] = dash_list[0];
16055               if (dash_list[0])
16056                 priv->tree_line_dashes[1] = dash_list[1];
16057
16058               g_free (dash_list);
16059             }
16060           else
16061             {
16062               priv->tree_line_dashes[0] = 1;
16063               priv->tree_line_dashes[1] = 1;
16064             }
16065         }
16066     }
16067
16068   if (was_enabled != enabled)
16069     {
16070       gtk_widget_queue_draw (GTK_WIDGET (tree_view));
16071
16072       g_object_notify (G_OBJECT (tree_view), "enable-tree-lines");
16073     }
16074 }
16075
16076
16077 /**
16078  * gtk_tree_view_set_show_expanders:
16079  * @tree_view: a #GtkTreeView
16080  * @enabled: %TRUE to enable expander drawing, %FALSE otherwise.
16081  *
16082  * Sets whether to draw and enable expanders and indent child rows in
16083  * @tree_view.  When disabled there will be no expanders visible in trees
16084  * and there will be no way to expand and collapse rows by default.  Also
16085  * note that hiding the expanders will disable the default indentation.  You
16086  * can set a custom indentation in this case using
16087  * gtk_tree_view_set_level_indentation().
16088  * This does not have any visible effects for lists.
16089  *
16090  * Since: 2.12
16091  */
16092 void
16093 gtk_tree_view_set_show_expanders (GtkTreeView *tree_view,
16094                                   gboolean     enabled)
16095 {
16096   gboolean was_enabled;
16097
16098   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
16099
16100   enabled = enabled != FALSE;
16101   was_enabled = tree_view->priv->show_expanders;
16102
16103   tree_view->priv->show_expanders = enabled == TRUE;
16104
16105   if (enabled != was_enabled)
16106     gtk_widget_queue_draw (GTK_WIDGET (tree_view));
16107 }
16108
16109 /**
16110  * gtk_tree_view_get_show_expanders:
16111  * @tree_view: a #GtkTreeView.
16112  *
16113  * Returns whether or not expanders are drawn in @tree_view.
16114  *
16115  * Return value: %TRUE if expanders are drawn in @tree_view, %FALSE
16116  * otherwise.
16117  *
16118  * Since: 2.12
16119  */
16120 gboolean
16121 gtk_tree_view_get_show_expanders (GtkTreeView *tree_view)
16122 {
16123   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), FALSE);
16124
16125   return tree_view->priv->show_expanders;
16126 }
16127
16128 /**
16129  * gtk_tree_view_set_level_indentation:
16130  * @tree_view: a #GtkTreeView
16131  * @indentation: the amount, in pixels, of extra indentation in @tree_view.
16132  *
16133  * Sets the amount of extra indentation for child levels to use in @tree_view
16134  * in addition to the default indentation.  The value should be specified in
16135  * pixels, a value of 0 disables this feature and in this case only the default
16136  * indentation will be used.
16137  * This does not have any visible effects for lists.
16138  *
16139  * Since: 2.12
16140  */
16141 void
16142 gtk_tree_view_set_level_indentation (GtkTreeView *tree_view,
16143                                      gint         indentation)
16144 {
16145   tree_view->priv->level_indentation = indentation;
16146
16147   gtk_widget_queue_draw (GTK_WIDGET (tree_view));
16148 }
16149
16150 /**
16151  * gtk_tree_view_get_level_indentation:
16152  * @tree_view: a #GtkTreeView.
16153  *
16154  * Returns the amount, in pixels, of extra indentation for child levels
16155  * in @tree_view.
16156  *
16157  * Return value: the amount of extra indentation for child levels in
16158  * @tree_view.  A return value of 0 means that this feature is disabled.
16159  *
16160  * Since: 2.12
16161  */
16162 gint
16163 gtk_tree_view_get_level_indentation (GtkTreeView *tree_view)
16164 {
16165   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), 0);
16166
16167   return tree_view->priv->level_indentation;
16168 }
16169
16170 /**
16171  * gtk_tree_view_set_tooltip_row:
16172  * @tree_view: a #GtkTreeView
16173  * @tooltip: a #GtkTooltip
16174  * @path: a #GtkTreePath
16175  *
16176  * Sets the tip area of @tooltip to be the area covered by the row at @path.
16177  * See also gtk_tree_view_set_tooltip_column() for a simpler alternative.
16178  * See also gtk_tooltip_set_tip_area().
16179  *
16180  * Since: 2.12
16181  */
16182 void
16183 gtk_tree_view_set_tooltip_row (GtkTreeView *tree_view,
16184                                GtkTooltip  *tooltip,
16185                                GtkTreePath *path)
16186 {
16187   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
16188   g_return_if_fail (GTK_IS_TOOLTIP (tooltip));
16189
16190   gtk_tree_view_set_tooltip_cell (tree_view, tooltip, path, NULL, NULL);
16191 }
16192
16193 /**
16194  * gtk_tree_view_set_tooltip_cell:
16195  * @tree_view: a #GtkTreeView
16196  * @tooltip: a #GtkTooltip
16197  * @path: (allow-none): a #GtkTreePath or %NULL
16198  * @column: (allow-none): a #GtkTreeViewColumn or %NULL
16199  * @cell: (allow-none): a #GtkCellRenderer or %NULL
16200  *
16201  * Sets the tip area of @tooltip to the area @path, @column and @cell have
16202  * in common.  For example if @path is %NULL and @column is set, the tip
16203  * area will be set to the full area covered by @column.  See also
16204  * gtk_tooltip_set_tip_area().
16205  *
16206  * Note that if @path is not specified and @cell is set and part of a column
16207  * containing the expander, the tooltip might not show and hide at the correct
16208  * position.  In such cases @path must be set to the current node under the
16209  * mouse cursor for this function to operate correctly.
16210  *
16211  * See also gtk_tree_view_set_tooltip_column() for a simpler alternative.
16212  *
16213  * Since: 2.12
16214  */
16215 void
16216 gtk_tree_view_set_tooltip_cell (GtkTreeView       *tree_view,
16217                                 GtkTooltip        *tooltip,
16218                                 GtkTreePath       *path,
16219                                 GtkTreeViewColumn *column,
16220                                 GtkCellRenderer   *cell)
16221 {
16222   GtkAllocation allocation;
16223   GdkRectangle rect;
16224
16225   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
16226   g_return_if_fail (GTK_IS_TOOLTIP (tooltip));
16227   g_return_if_fail (column == NULL || GTK_IS_TREE_VIEW_COLUMN (column));
16228   g_return_if_fail (cell == NULL || GTK_IS_CELL_RENDERER (cell));
16229
16230   /* Determine x values. */
16231   if (column && cell)
16232     {
16233       GdkRectangle tmp;
16234       gint start, width;
16235
16236       /* We always pass in path here, whether it is NULL or not.
16237        * For cells in expander columns path must be specified so that
16238        * we can correctly account for the indentation.  This also means
16239        * that the tooltip is constrained vertically by the "Determine y
16240        * values" code below; this is not a real problem since cells actually
16241        * don't stretch vertically in constrast to columns.
16242        */
16243       gtk_tree_view_get_cell_area (tree_view, path, column, &tmp);
16244       gtk_tree_view_column_cell_get_position (column, cell, &start, &width);
16245
16246       gtk_tree_view_convert_bin_window_to_widget_coords (tree_view,
16247                                                          tmp.x + start, 0,
16248                                                          &rect.x, NULL);
16249       rect.width = width;
16250     }
16251   else if (column)
16252     {
16253       GdkRectangle tmp;
16254
16255       gtk_tree_view_get_background_area (tree_view, NULL, column, &tmp);
16256       gtk_tree_view_convert_bin_window_to_widget_coords (tree_view,
16257                                                          tmp.x, 0,
16258                                                          &rect.x, NULL);
16259       rect.width = tmp.width;
16260     }
16261   else
16262     {
16263       gtk_widget_get_allocation (GTK_WIDGET (tree_view), &allocation);
16264       rect.x = 0;
16265       rect.width = allocation.width;
16266     }
16267
16268   /* Determine y values. */
16269   if (path)
16270     {
16271       GdkRectangle tmp;
16272
16273       gtk_tree_view_get_background_area (tree_view, path, NULL, &tmp);
16274       gtk_tree_view_convert_bin_window_to_widget_coords (tree_view,
16275                                                          0, tmp.y,
16276                                                          NULL, &rect.y);
16277       rect.height = tmp.height;
16278     }
16279   else
16280     {
16281       rect.y = 0;
16282       rect.height = gtk_adjustment_get_page_size (tree_view->priv->vadjustment);
16283     }
16284
16285   gtk_tooltip_set_tip_area (tooltip, &rect);
16286 }
16287
16288 /**
16289  * gtk_tree_view_get_tooltip_context:
16290  * @tree_view: a #GtkTreeView
16291  * @x: (inout): the x coordinate (relative to widget coordinates)
16292  * @y: (inout): the y coordinate (relative to widget coordinates)
16293  * @keyboard_tip: whether this is a keyboard tooltip or not
16294  * @model: (out) (allow-none) (transfer none): a pointer to receive a
16295  *         #GtkTreeModel or %NULL
16296  * @path: (out) (allow-none): a pointer to receive a #GtkTreePath or %NULL
16297  * @iter: (out) (allow-none): a pointer to receive a #GtkTreeIter or %NULL
16298  *
16299  * This function is supposed to be used in a #GtkWidget::query-tooltip
16300  * signal handler for #GtkTreeView.  The @x, @y and @keyboard_tip values
16301  * which are received in the signal handler, should be passed to this
16302  * function without modification.
16303  *
16304  * The return value indicates whether there is a tree view row at the given
16305  * coordinates (%TRUE) or not (%FALSE) for mouse tooltips.  For keyboard
16306  * tooltips the row returned will be the cursor row.  When %TRUE, then any of
16307  * @model, @path and @iter which have been provided will be set to point to
16308  * that row and the corresponding model.  @x and @y will always be converted
16309  * to be relative to @tree_view's bin_window if @keyboard_tooltip is %FALSE.
16310  *
16311  * Return value: whether or not the given tooltip context points to a row.
16312  *
16313  * Since: 2.12
16314  */
16315 gboolean
16316 gtk_tree_view_get_tooltip_context (GtkTreeView   *tree_view,
16317                                    gint          *x,
16318                                    gint          *y,
16319                                    gboolean       keyboard_tip,
16320                                    GtkTreeModel **model,
16321                                    GtkTreePath  **path,
16322                                    GtkTreeIter   *iter)
16323 {
16324   GtkTreePath *tmppath = NULL;
16325
16326   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), FALSE);
16327   g_return_val_if_fail (x != NULL, FALSE);
16328   g_return_val_if_fail (y != NULL, FALSE);
16329
16330   if (keyboard_tip)
16331     {
16332       gtk_tree_view_get_cursor (tree_view, &tmppath, NULL);
16333
16334       if (!tmppath)
16335         return FALSE;
16336     }
16337   else
16338     {
16339       gtk_tree_view_convert_widget_to_bin_window_coords (tree_view, *x, *y,
16340                                                          x, y);
16341
16342       if (!gtk_tree_view_get_path_at_pos (tree_view, *x, *y,
16343                                           &tmppath, NULL, NULL, NULL))
16344         return FALSE;
16345     }
16346
16347   if (model)
16348     *model = gtk_tree_view_get_model (tree_view);
16349
16350   if (iter)
16351     gtk_tree_model_get_iter (gtk_tree_view_get_model (tree_view),
16352                              iter, tmppath);
16353
16354   if (path)
16355     *path = tmppath;
16356   else
16357     gtk_tree_path_free (tmppath);
16358
16359   return TRUE;
16360 }
16361
16362 static gboolean
16363 gtk_tree_view_set_tooltip_query_cb (GtkWidget  *widget,
16364                                     gint        x,
16365                                     gint        y,
16366                                     gboolean    keyboard_tip,
16367                                     GtkTooltip *tooltip,
16368                                     gpointer    data)
16369 {
16370   GValue value = G_VALUE_INIT;
16371   GValue transformed = G_VALUE_INIT;
16372   GtkTreeIter iter;
16373   GtkTreePath *path;
16374   GtkTreeModel *model;
16375   GtkTreeView *tree_view = GTK_TREE_VIEW (widget);
16376
16377   if (!gtk_tree_view_get_tooltip_context (GTK_TREE_VIEW (widget),
16378                                           &x, &y,
16379                                           keyboard_tip,
16380                                           &model, &path, &iter))
16381     return FALSE;
16382
16383   gtk_tree_model_get_value (model, &iter,
16384                             tree_view->priv->tooltip_column, &value);
16385
16386   g_value_init (&transformed, G_TYPE_STRING);
16387
16388   if (!g_value_transform (&value, &transformed))
16389     {
16390       g_value_unset (&value);
16391       gtk_tree_path_free (path);
16392
16393       return FALSE;
16394     }
16395
16396   g_value_unset (&value);
16397
16398   if (!g_value_get_string (&transformed))
16399     {
16400       g_value_unset (&transformed);
16401       gtk_tree_path_free (path);
16402
16403       return FALSE;
16404     }
16405
16406   gtk_tooltip_set_markup (tooltip, g_value_get_string (&transformed));
16407   gtk_tree_view_set_tooltip_row (tree_view, tooltip, path);
16408
16409   gtk_tree_path_free (path);
16410   g_value_unset (&transformed);
16411
16412   return TRUE;
16413 }
16414
16415 /**
16416  * gtk_tree_view_set_tooltip_column:
16417  * @tree_view: a #GtkTreeView
16418  * @column: an integer, which is a valid column number for @tree_view's model
16419  *
16420  * If you only plan to have simple (text-only) tooltips on full rows, you
16421  * can use this function to have #GtkTreeView handle these automatically
16422  * for you. @column should be set to the column in @tree_view's model
16423  * containing the tooltip texts, or -1 to disable this feature.
16424  *
16425  * When enabled, #GtkWidget::has-tooltip will be set to %TRUE and
16426  * @tree_view will connect a #GtkWidget::query-tooltip signal handler.
16427  *
16428  * Note that the signal handler sets the text with gtk_tooltip_set_markup(),
16429  * so &amp;, &lt;, etc have to be escaped in the text.
16430  *
16431  * Since: 2.12
16432  */
16433 void
16434 gtk_tree_view_set_tooltip_column (GtkTreeView *tree_view,
16435                                   gint         column)
16436 {
16437   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
16438
16439   if (column == tree_view->priv->tooltip_column)
16440     return;
16441
16442   if (column == -1)
16443     {
16444       g_signal_handlers_disconnect_by_func (tree_view,
16445                                             gtk_tree_view_set_tooltip_query_cb,
16446                                             NULL);
16447       gtk_widget_set_has_tooltip (GTK_WIDGET (tree_view), FALSE);
16448     }
16449   else
16450     {
16451       if (tree_view->priv->tooltip_column == -1)
16452         {
16453           g_signal_connect (tree_view, "query-tooltip",
16454                             G_CALLBACK (gtk_tree_view_set_tooltip_query_cb), NULL);
16455           gtk_widget_set_has_tooltip (GTK_WIDGET (tree_view), TRUE);
16456         }
16457     }
16458
16459   tree_view->priv->tooltip_column = column;
16460   g_object_notify (G_OBJECT (tree_view), "tooltip-column");
16461 }
16462
16463 /**
16464  * gtk_tree_view_get_tooltip_column:
16465  * @tree_view: a #GtkTreeView
16466  *
16467  * Returns the column of @tree_view's model which is being used for
16468  * displaying tooltips on @tree_view's rows.
16469  *
16470  * Return value: the index of the tooltip column that is currently being
16471  * used, or -1 if this is disabled.
16472  *
16473  * Since: 2.12
16474  */
16475 gint
16476 gtk_tree_view_get_tooltip_column (GtkTreeView *tree_view)
16477 {
16478   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), 0);
16479
16480   return tree_view->priv->tooltip_column;
16481 }