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_ensure_background (GtkTreeView *tree_view)
2185 {
2186   GtkStyleContext *context;
2187
2188   context = gtk_widget_get_style_context (GTK_WIDGET (tree_view));
2189
2190   gtk_style_context_save (context);
2191   gtk_style_context_add_class (context, GTK_STYLE_CLASS_VIEW);
2192   gtk_style_context_set_background (context, tree_view->priv->bin_window);
2193   gtk_style_context_restore (context);
2194
2195   gtk_style_context_set_background (context, tree_view->priv->header_window);
2196 }
2197
2198 static void
2199 gtk_tree_view_realize (GtkWidget *widget)
2200 {
2201   GtkAllocation allocation;
2202   GtkTreeView *tree_view = GTK_TREE_VIEW (widget);
2203   GdkWindow *window;
2204   GdkWindowAttr attributes;
2205   GList *tmp_list;
2206   gint attributes_mask;
2207
2208   gtk_widget_set_realized (widget, TRUE);
2209
2210   gtk_widget_get_allocation (widget, &allocation);
2211
2212   /* Make the main, clipping window */
2213   attributes.window_type = GDK_WINDOW_CHILD;
2214   attributes.x = allocation.x;
2215   attributes.y = allocation.y;
2216   attributes.width = allocation.width;
2217   attributes.height = allocation.height;
2218   attributes.wclass = GDK_INPUT_OUTPUT;
2219   attributes.visual = gtk_widget_get_visual (widget);
2220   attributes.event_mask = GDK_VISIBILITY_NOTIFY_MASK;
2221
2222   attributes_mask = GDK_WA_X | GDK_WA_Y | GDK_WA_VISUAL;
2223
2224   window = gdk_window_new (gtk_widget_get_parent_window (widget),
2225                            &attributes, attributes_mask);
2226   gtk_widget_set_window (widget, window);
2227   gdk_window_set_user_data (window, widget);
2228
2229   gtk_widget_get_allocation (widget, &allocation);
2230
2231   /* Make the window for the tree */
2232   attributes.x = 0;
2233   attributes.y = gtk_tree_view_get_effective_header_height (tree_view);
2234   attributes.width = MAX (tree_view->priv->width, allocation.width);
2235   attributes.height = allocation.height;
2236   attributes.event_mask = (GDK_EXPOSURE_MASK |
2237                            GDK_SCROLL_MASK |
2238                            GDK_POINTER_MOTION_MASK |
2239                            GDK_ENTER_NOTIFY_MASK |
2240                            GDK_LEAVE_NOTIFY_MASK |
2241                            GDK_BUTTON_PRESS_MASK |
2242                            GDK_BUTTON_RELEASE_MASK |
2243                            gtk_widget_get_events (widget));
2244
2245   tree_view->priv->bin_window = gdk_window_new (window,
2246                                                 &attributes, attributes_mask);
2247   gdk_window_set_user_data (tree_view->priv->bin_window, widget);
2248
2249   gtk_widget_get_allocation (widget, &allocation);
2250
2251   /* Make the column header window */
2252   attributes.x = 0;
2253   attributes.y = 0;
2254   attributes.width = MAX (tree_view->priv->width, allocation.width);
2255   attributes.height = tree_view->priv->header_height;
2256   attributes.event_mask = (GDK_EXPOSURE_MASK |
2257                            GDK_SCROLL_MASK |
2258                            GDK_ENTER_NOTIFY_MASK |
2259                            GDK_LEAVE_NOTIFY_MASK |
2260                            GDK_BUTTON_PRESS_MASK |
2261                            GDK_BUTTON_RELEASE_MASK |
2262                            GDK_KEY_PRESS_MASK |
2263                            GDK_KEY_RELEASE_MASK |
2264                            gtk_widget_get_events (widget));
2265
2266   tree_view->priv->header_window = gdk_window_new (window,
2267                                                    &attributes, attributes_mask);
2268   gdk_window_set_user_data (tree_view->priv->header_window, widget);
2269
2270   gtk_tree_view_ensure_background (tree_view);
2271
2272   tmp_list = tree_view->priv->children;
2273   while (tmp_list)
2274     {
2275       GtkTreeViewChild *child = tmp_list->data;
2276       tmp_list = tmp_list->next;
2277
2278       gtk_widget_set_parent_window (child->widget, tree_view->priv->bin_window);
2279     }
2280
2281   for (tmp_list = tree_view->priv->columns; tmp_list; tmp_list = tmp_list->next)
2282     _gtk_tree_view_column_realize_button (GTK_TREE_VIEW_COLUMN (tmp_list->data));
2283
2284   /* Need to call those here, since they create GCs */
2285   gtk_tree_view_set_grid_lines (tree_view, tree_view->priv->grid_lines);
2286   gtk_tree_view_set_enable_tree_lines (tree_view, tree_view->priv->tree_lines_enabled);
2287
2288   install_presize_handler (tree_view);
2289 }
2290
2291 static void
2292 gtk_tree_view_unrealize (GtkWidget *widget)
2293 {
2294   GtkTreeView *tree_view = GTK_TREE_VIEW (widget);
2295   GtkTreeViewPrivate *priv = tree_view->priv;
2296   GtkStyleContext *context;
2297   GList *list;
2298
2299   if (priv->scroll_timeout != 0)
2300     {
2301       g_source_remove (priv->scroll_timeout);
2302       priv->scroll_timeout = 0;
2303     }
2304
2305   if (priv->auto_expand_timeout != 0)
2306     {
2307       g_source_remove (priv->auto_expand_timeout);
2308       priv->auto_expand_timeout = 0;
2309     }
2310
2311   if (priv->open_dest_timeout != 0)
2312     {
2313       g_source_remove (priv->open_dest_timeout);
2314       priv->open_dest_timeout = 0;
2315     }
2316
2317   context = gtk_widget_get_style_context (widget);
2318   gtk_style_context_cancel_animations (context, NULL);
2319
2320   if (priv->presize_handler_timer != 0)
2321     {
2322       g_source_remove (priv->presize_handler_timer);
2323       priv->presize_handler_timer = 0;
2324     }
2325
2326   if (priv->validate_rows_timer != 0)
2327     {
2328       g_source_remove (priv->validate_rows_timer);
2329       priv->validate_rows_timer = 0;
2330     }
2331
2332   if (priv->scroll_sync_timer != 0)
2333     {
2334       g_source_remove (priv->scroll_sync_timer);
2335       priv->scroll_sync_timer = 0;
2336     }
2337
2338   if (priv->typeselect_flush_timeout)
2339     {
2340       g_source_remove (priv->typeselect_flush_timeout);
2341       priv->typeselect_flush_timeout = 0;
2342     }
2343
2344   for (list = priv->columns; list; list = list->next)
2345     _gtk_tree_view_column_unrealize_button (GTK_TREE_VIEW_COLUMN (list->data));
2346
2347   gdk_window_set_user_data (priv->bin_window, NULL);
2348   gdk_window_destroy (priv->bin_window);
2349   priv->bin_window = NULL;
2350
2351   gdk_window_set_user_data (priv->header_window, NULL);
2352   gdk_window_destroy (priv->header_window);
2353   priv->header_window = NULL;
2354
2355   if (priv->drag_window)
2356     {
2357       gdk_window_set_user_data (priv->drag_window, NULL);
2358       gdk_window_destroy (priv->drag_window);
2359       priv->drag_window = NULL;
2360     }
2361
2362   if (priv->drag_highlight_window)
2363     {
2364       gdk_window_set_user_data (priv->drag_highlight_window, NULL);
2365       gdk_window_destroy (priv->drag_highlight_window);
2366       priv->drag_highlight_window = NULL;
2367     }
2368
2369   GTK_WIDGET_CLASS (gtk_tree_view_parent_class)->unrealize (widget);
2370 }
2371
2372 /* GtkWidget::size_request helper */
2373 static void
2374 gtk_tree_view_size_request_columns (GtkTreeView *tree_view)
2375 {
2376   GList *list;
2377
2378   tree_view->priv->header_height = 0;
2379
2380   for (list = tree_view->priv->columns; list; list = list->next)
2381     {
2382       GtkRequisition     requisition;
2383       GtkTreeViewColumn *column = list->data;
2384       GtkWidget         *button = gtk_tree_view_column_get_button (column);
2385
2386       if (button == NULL)
2387         continue;
2388
2389       gtk_widget_get_preferred_size (button, &requisition, NULL);
2390       tree_view->priv->header_height = MAX (tree_view->priv->header_height, requisition.height);
2391     }
2392 }
2393
2394
2395 /* Called only by ::size_request */
2396 static void
2397 gtk_tree_view_update_size (GtkTreeView *tree_view)
2398 {
2399   GList *list;
2400   GtkTreeViewColumn *column;
2401   gint i;
2402
2403   if (tree_view->priv->model == NULL)
2404     {
2405       tree_view->priv->width = 0;
2406       tree_view->priv->prev_width = 0;
2407       tree_view->priv->height = 0;
2408       return;
2409     }
2410
2411   tree_view->priv->prev_width = tree_view->priv->width;
2412   tree_view->priv->width = 0;
2413
2414   /* keep this in sync with size_allocate below */
2415   for (list = tree_view->priv->columns, i = 0; list; list = list->next, i++)
2416     {
2417       column = list->data;
2418       if (!gtk_tree_view_column_get_visible (column))
2419         continue;
2420
2421       tree_view->priv->width += _gtk_tree_view_column_request_width (column);
2422     }
2423
2424   if (tree_view->priv->tree == NULL)
2425     tree_view->priv->height = 0;
2426   else
2427     tree_view->priv->height = tree_view->priv->tree->root->offset;
2428 }
2429
2430 static void
2431 gtk_tree_view_size_request (GtkWidget      *widget,
2432                             GtkRequisition *requisition,
2433                             gboolean        may_validate)
2434 {
2435   GtkTreeView *tree_view = GTK_TREE_VIEW (widget);
2436
2437   if (may_validate)
2438     {
2439       /* we validate some rows initially just to make sure we have some size.
2440        * In practice, with a lot of static lists, this should get a good width.
2441        */
2442       do_validate_rows (tree_view, FALSE);
2443     }
2444
2445   gtk_tree_view_size_request_columns (tree_view);
2446   gtk_tree_view_update_size (GTK_TREE_VIEW (widget));
2447
2448   requisition->width = tree_view->priv->width;
2449   requisition->height = tree_view->priv->height + gtk_tree_view_get_effective_header_height (tree_view);
2450 }
2451
2452 static void
2453 gtk_tree_view_get_preferred_width (GtkWidget *widget,
2454                                    gint      *minimum,
2455                                    gint      *natural)
2456 {
2457   GtkRequisition requisition;
2458
2459   gtk_tree_view_size_request (widget, &requisition, TRUE);
2460
2461   *minimum = *natural = requisition.width;
2462 }
2463
2464 static void
2465 gtk_tree_view_get_preferred_height (GtkWidget *widget,
2466                                     gint      *minimum,
2467                                     gint      *natural)
2468 {
2469   GtkRequisition requisition;
2470
2471   gtk_tree_view_size_request (widget, &requisition, TRUE);
2472
2473   *minimum = *natural = requisition.height;
2474 }
2475
2476 static int
2477 gtk_tree_view_calculate_width_before_expander (GtkTreeView *tree_view)
2478 {
2479   int width = 0;
2480   GList *list;
2481   gboolean rtl;
2482
2483   rtl = (gtk_widget_get_direction (GTK_WIDGET (tree_view)) == GTK_TEXT_DIR_RTL);
2484   for (list = (rtl ? g_list_last (tree_view->priv->columns) : g_list_first (tree_view->priv->columns));
2485        list->data != tree_view->priv->expander_column;
2486        list = (rtl ? list->prev : list->next))
2487     {
2488       GtkTreeViewColumn *column = list->data;
2489
2490       width += gtk_tree_view_column_get_width (column);
2491     }
2492
2493   return width;
2494 }
2495
2496 /* GtkWidget::size_allocate helper */
2497 static void
2498 gtk_tree_view_size_allocate_columns (GtkWidget *widget,
2499                                      gboolean  *width_changed)
2500 {
2501   GtkTreeView *tree_view;
2502   GList *list, *first_column, *last_column;
2503   GtkTreeViewColumn *column;
2504   GtkAllocation widget_allocation;
2505   gint width = 0;
2506   gint extra, extra_per_column, extra_for_last;
2507   gint full_requested_width = 0;
2508   gint number_of_expand_columns = 0;
2509   gboolean rtl;
2510   gboolean update_expand;
2511
2512   tree_view = GTK_TREE_VIEW (widget);
2513
2514   for (last_column = g_list_last (tree_view->priv->columns);
2515        last_column &&
2516        !(gtk_tree_view_column_get_visible (GTK_TREE_VIEW_COLUMN (last_column->data)));
2517        last_column = last_column->prev)
2518     ;
2519   if (last_column == NULL)
2520     return;
2521
2522   for (first_column = g_list_first (tree_view->priv->columns);
2523        first_column &&
2524        !(gtk_tree_view_column_get_visible (GTK_TREE_VIEW_COLUMN (first_column->data)));
2525        first_column = first_column->next)
2526     ;
2527
2528   rtl = (gtk_widget_get_direction (widget) == GTK_TEXT_DIR_RTL);
2529
2530   /* find out how many extra space and expandable columns we have */
2531   for (list = tree_view->priv->columns; list != last_column->next; list = list->next)
2532     {
2533       column = (GtkTreeViewColumn *)list->data;
2534
2535       if (!gtk_tree_view_column_get_visible (column))
2536         continue;
2537
2538       full_requested_width += _gtk_tree_view_column_request_width (column);
2539
2540       if (gtk_tree_view_column_get_expand (column))
2541         number_of_expand_columns++;
2542     }
2543
2544   /* Only update the expand value if the width of the widget has changed,
2545    * or the number of expand columns has changed, or if there are no expand
2546    * columns, or if we didn't have an size-allocation yet after the
2547    * last validated node.
2548    */
2549   update_expand = (width_changed && *width_changed == TRUE)
2550       || number_of_expand_columns != tree_view->priv->last_number_of_expand_columns
2551       || number_of_expand_columns == 0
2552       || tree_view->priv->post_validation_flag == TRUE;
2553
2554   tree_view->priv->post_validation_flag = FALSE;
2555
2556   gtk_widget_get_allocation (widget, &widget_allocation);
2557   if (!update_expand)
2558     {
2559       extra = tree_view->priv->last_extra_space;
2560       extra_for_last = MAX (widget_allocation.width - full_requested_width - extra, 0);
2561     }
2562   else
2563     {
2564       extra = MAX (widget_allocation.width - full_requested_width, 0);
2565       extra_for_last = 0;
2566
2567       tree_view->priv->last_extra_space = extra;
2568     }
2569
2570   if (number_of_expand_columns > 0)
2571     extra_per_column = extra/number_of_expand_columns;
2572   else
2573     extra_per_column = 0;
2574
2575   if (update_expand)
2576     {
2577       tree_view->priv->last_extra_space_per_column = extra_per_column;
2578       tree_view->priv->last_number_of_expand_columns = number_of_expand_columns;
2579     }
2580
2581   for (list = (rtl ? last_column : first_column);
2582        list != (rtl ? first_column->prev : last_column->next);
2583        list = (rtl ? list->prev : list->next))
2584     {
2585       gint column_width;
2586
2587       column = list->data;
2588
2589       if (!gtk_tree_view_column_get_visible (column))
2590         continue;
2591
2592       /* We need to handle the dragged button specially.
2593        */
2594       if (column == tree_view->priv->drag_column)
2595         {
2596           GtkAllocation drag_allocation;
2597           GtkWidget    *button;
2598
2599           button = gtk_tree_view_column_get_button (tree_view->priv->drag_column);
2600
2601           drag_allocation.x = 0;
2602           drag_allocation.y = 0;
2603           drag_allocation.width = gdk_window_get_width (tree_view->priv->drag_window);
2604           drag_allocation.height = gdk_window_get_height (tree_view->priv->drag_window);
2605           gtk_widget_size_allocate (button, &drag_allocation);
2606           width += drag_allocation.width;
2607           continue;
2608         }
2609
2610       column_width = _gtk_tree_view_column_request_width (column);
2611
2612       if (gtk_tree_view_column_get_expand (column))
2613         {
2614           if (number_of_expand_columns == 1)
2615             {
2616               /* We add the remander to the last column as
2617                * */
2618               column_width += extra;
2619             }
2620           else
2621             {
2622               column_width += extra_per_column;
2623               extra -= extra_per_column;
2624               number_of_expand_columns --;
2625             }
2626         }
2627       else if (number_of_expand_columns == 0 &&
2628                list == last_column)
2629         {
2630           column_width += extra;
2631         }
2632
2633       /* In addition to expand, the last column can get even more
2634        * extra space so all available space is filled up.
2635        */
2636       if (extra_for_last > 0 && list == last_column)
2637         column_width += extra_for_last;
2638
2639       _gtk_tree_view_column_allocate (column, width, column_width);
2640
2641       width += column_width;
2642     }
2643
2644   /* We change the width here.  The user might have been resizing columns,
2645    * which changes the total width of the tree view.  This is of
2646    * importance for getting the horizontal scroll bar right.
2647    */
2648   if (tree_view->priv->width != width)
2649     {
2650       tree_view->priv->width = width;
2651       if (width_changed)
2652         *width_changed = TRUE;
2653     }
2654 }
2655
2656
2657 static void
2658 gtk_tree_view_size_allocate (GtkWidget     *widget,
2659                              GtkAllocation *allocation)
2660 {
2661   GtkAllocation widget_allocation;
2662   GtkTreeView *tree_view = GTK_TREE_VIEW (widget);
2663   GList *tmp_list;
2664   gboolean width_changed = FALSE;
2665   gint old_width;
2666
2667   gtk_widget_get_allocation (widget, &widget_allocation);
2668   old_width = widget_allocation.width;
2669   if (allocation->width != widget_allocation.width)
2670     width_changed = TRUE;
2671
2672   gtk_widget_set_allocation (widget, allocation);
2673
2674   tmp_list = tree_view->priv->children;
2675
2676   while (tmp_list)
2677     {
2678       GtkAllocation allocation;
2679
2680       GtkTreeViewChild *child = tmp_list->data;
2681       tmp_list = tmp_list->next;
2682
2683       /* totally ignore our child's requisition */
2684       allocation.x = child->x;
2685       allocation.y = child->y;
2686       allocation.width = child->width;
2687       allocation.height = child->height;
2688       gtk_widget_size_allocate (child->widget, &allocation);
2689     }
2690
2691   /* We size-allocate the columns first because the width of the
2692    * tree view (used in updating the adjustments below) might change.
2693    */
2694   gtk_tree_view_size_allocate_columns (widget, &width_changed);
2695
2696   g_object_freeze_notify (G_OBJECT (tree_view->priv->hadjustment));
2697   gtk_adjustment_set_page_size (tree_view->priv->hadjustment,
2698                                 allocation->width);
2699   gtk_adjustment_set_page_increment (tree_view->priv->hadjustment,
2700                                      allocation->width * 0.9);
2701   gtk_adjustment_set_step_increment (tree_view->priv->hadjustment,
2702                                      allocation->width * 0.1);
2703   gtk_adjustment_set_lower (tree_view->priv->hadjustment, 0);
2704   gtk_adjustment_set_upper (tree_view->priv->hadjustment,
2705                             MAX (gtk_adjustment_get_page_size (tree_view->priv->hadjustment),
2706                                  tree_view->priv->width));
2707   g_object_thaw_notify (G_OBJECT (tree_view->priv->hadjustment));
2708
2709   if (gtk_widget_get_direction(widget) == GTK_TEXT_DIR_RTL)
2710     {
2711       if (allocation->width < tree_view->priv->width)
2712         {
2713           if (tree_view->priv->init_hadjust_value)
2714             {
2715               gtk_adjustment_set_value (tree_view->priv->hadjustment,
2716                                         MAX (tree_view->priv->width -
2717                                              allocation->width, 0));
2718               tree_view->priv->init_hadjust_value = FALSE;
2719             }
2720           else if (allocation->width != old_width)
2721             {
2722               gtk_adjustment_set_value (tree_view->priv->hadjustment,
2723                                         CLAMP (gtk_adjustment_get_value (tree_view->priv->hadjustment) - allocation->width + old_width,
2724                                                0,
2725                                                tree_view->priv->width - allocation->width));
2726             }
2727           else
2728             gtk_adjustment_set_value (tree_view->priv->hadjustment,
2729                                       CLAMP (tree_view->priv->width - (tree_view->priv->prev_width - gtk_adjustment_get_value (tree_view->priv->hadjustment)),
2730                                              0,
2731                                              tree_view->priv->width - allocation->width));
2732         }
2733       else
2734         {
2735           gtk_adjustment_set_value (tree_view->priv->hadjustment, 0);
2736           tree_view->priv->init_hadjust_value = TRUE;
2737         }
2738     }
2739   else
2740     if (gtk_adjustment_get_value (tree_view->priv->hadjustment) + allocation->width > tree_view->priv->width)
2741       gtk_adjustment_set_value (tree_view->priv->hadjustment,
2742                                 MAX (tree_view->priv->width -
2743                                      allocation->width, 0));
2744
2745   g_object_freeze_notify (G_OBJECT (tree_view->priv->vadjustment));
2746   gtk_adjustment_set_page_size (tree_view->priv->vadjustment,
2747                                 allocation->height -
2748                                 gtk_tree_view_get_effective_header_height (tree_view));
2749   gtk_adjustment_set_step_increment (tree_view->priv->vadjustment,
2750                                      gtk_adjustment_get_page_size (tree_view->priv->vadjustment) * 0.1);
2751   gtk_adjustment_set_page_increment (tree_view->priv->vadjustment,
2752                                      gtk_adjustment_get_page_size (tree_view->priv->vadjustment) * 0.9);
2753   gtk_adjustment_set_lower (tree_view->priv->vadjustment, 0);
2754   gtk_adjustment_set_upper (tree_view->priv->vadjustment,
2755                             MAX (gtk_adjustment_get_page_size (tree_view->priv->vadjustment),
2756                                  tree_view->priv->height));
2757   g_object_thaw_notify (G_OBJECT (tree_view->priv->vadjustment));
2758
2759   /* now the adjustments and window sizes are in sync, we can sync toprow/dy again */
2760   if (tree_view->priv->height <= gtk_adjustment_get_page_size (tree_view->priv->vadjustment))
2761     gtk_adjustment_set_value (GTK_ADJUSTMENT (tree_view->priv->vadjustment), 0);
2762   else if (gtk_adjustment_get_value (tree_view->priv->vadjustment) + gtk_adjustment_get_page_size (tree_view->priv->vadjustment) > tree_view->priv->height)
2763     gtk_adjustment_set_value (GTK_ADJUSTMENT (tree_view->priv->vadjustment),
2764                               tree_view->priv->height - gtk_adjustment_get_page_size (tree_view->priv->vadjustment));
2765   else if (gtk_tree_row_reference_valid (tree_view->priv->top_row))
2766     gtk_tree_view_top_row_to_dy (tree_view);
2767   else
2768     gtk_tree_view_dy_to_top_row (tree_view);
2769
2770   if (gtk_widget_get_realized (widget))
2771     {
2772       gdk_window_move_resize (gtk_widget_get_window (widget),
2773                               allocation->x, allocation->y,
2774                               allocation->width, allocation->height);
2775       gdk_window_move_resize (tree_view->priv->header_window,
2776                               - (gint) gtk_adjustment_get_value (tree_view->priv->hadjustment),
2777                               0,
2778                               MAX (tree_view->priv->width, allocation->width),
2779                               tree_view->priv->header_height);
2780       gdk_window_move_resize (tree_view->priv->bin_window,
2781                               - (gint) gtk_adjustment_get_value (tree_view->priv->hadjustment),
2782                               gtk_tree_view_get_effective_header_height (tree_view),
2783                               MAX (tree_view->priv->width, allocation->width),
2784                               allocation->height - gtk_tree_view_get_effective_header_height (tree_view));
2785
2786       if (tree_view->priv->tree == NULL)
2787         invalidate_empty_focus (tree_view);
2788
2789       if (width_changed && tree_view->priv->expander_column)
2790         {
2791           /* Might seem awkward, but is the best heuristic I could come up
2792            * with.  Only if the width of the columns before the expander
2793            * changes, we will update the prelight status.  It is this
2794            * width that makes the expander move vertically.  Always updating
2795            * prelight status causes trouble with hover selections.
2796            */
2797           gint width_before_expander;
2798
2799           width_before_expander = gtk_tree_view_calculate_width_before_expander (tree_view);
2800
2801           if (tree_view->priv->prev_width_before_expander
2802               != width_before_expander)
2803               update_prelight (tree_view,
2804                                tree_view->priv->event_last_x,
2805                                tree_view->priv->event_last_y);
2806
2807           tree_view->priv->prev_width_before_expander = width_before_expander;
2808         }
2809     }
2810 }
2811
2812 /* Grabs the focus and unsets the GTK_TREE_VIEW_DRAW_KEYFOCUS flag */
2813 static void
2814 grab_focus_and_unset_draw_keyfocus (GtkTreeView *tree_view)
2815 {
2816   GtkWidget *widget = GTK_WIDGET (tree_view);
2817
2818   if (gtk_widget_get_can_focus (widget) && !gtk_widget_has_focus (widget))
2819     gtk_widget_grab_focus (widget);
2820   tree_view->priv->draw_keyfocus = 0;
2821 }
2822
2823 static inline gboolean
2824 row_is_separator (GtkTreeView *tree_view,
2825                   GtkTreeIter *iter,
2826                   GtkTreePath *path)
2827 {
2828   gboolean is_separator = FALSE;
2829
2830   if (tree_view->priv->row_separator_func)
2831     {
2832       GtkTreeIter tmpiter;
2833
2834       if (iter)
2835         tmpiter = *iter;
2836       else
2837         {
2838           if (!gtk_tree_model_get_iter (tree_view->priv->model, &tmpiter, path))
2839             return FALSE;
2840         }
2841
2842       is_separator = tree_view->priv->row_separator_func (tree_view->priv->model,
2843                                                           &tmpiter,
2844                                                           tree_view->priv->row_separator_data);
2845     }
2846
2847   return is_separator;
2848 }
2849
2850 static gboolean
2851 gtk_tree_view_button_press (GtkWidget      *widget,
2852                             GdkEventButton *event)
2853 {
2854   GtkTreeView *tree_view = GTK_TREE_VIEW (widget);
2855   GList *list;
2856   GtkTreeViewColumn *column = NULL;
2857   gint i;
2858   GdkRectangle background_area;
2859   GdkRectangle cell_area;
2860   gint vertical_separator;
2861   gint horizontal_separator;
2862   gboolean path_is_selectable;
2863   gboolean rtl;
2864
2865   rtl = (gtk_widget_get_direction (widget) == GTK_TEXT_DIR_RTL);
2866   gtk_tree_view_stop_editing (tree_view, FALSE);
2867   gtk_widget_style_get (widget,
2868                         "vertical-separator", &vertical_separator,
2869                         "horizontal-separator", &horizontal_separator,
2870                         NULL);
2871
2872   /* Because grab_focus can cause reentrancy, we delay grab_focus until after
2873    * we're done handling the button press.
2874    */
2875
2876   if (event->window == tree_view->priv->bin_window)
2877     {
2878       GtkRBNode *node;
2879       GtkRBTree *tree;
2880       GtkTreePath *path;
2881       gint depth;
2882       gint new_y;
2883       gint y_offset;
2884       gint dval;
2885       gint pre_val, aft_val;
2886       GtkTreeViewColumn *column = NULL;
2887       gint column_handled_click = FALSE;
2888       gboolean row_double_click = FALSE;
2889       gboolean rtl;
2890       gboolean node_selected;
2891       GdkModifierType extend_mod_mask;
2892       GdkModifierType modify_mod_mask;
2893
2894       /* Empty tree? */
2895       if (tree_view->priv->tree == NULL)
2896         {
2897           grab_focus_and_unset_draw_keyfocus (tree_view);
2898           return TRUE;
2899         }
2900
2901       /* are we in an arrow? */
2902       if (tree_view->priv->prelight_node &&
2903           tree_view->priv->arrow_prelit &&
2904           gtk_tree_view_draw_expanders (tree_view))
2905         {
2906           if (event->button == 1)
2907             {
2908               gtk_grab_add (widget);
2909               tree_view->priv->button_pressed_node = tree_view->priv->prelight_node;
2910               tree_view->priv->button_pressed_tree = tree_view->priv->prelight_tree;
2911               gtk_tree_view_queue_draw_arrow (GTK_TREE_VIEW (widget),
2912                                               tree_view->priv->prelight_tree,
2913                                               tree_view->priv->prelight_node);
2914             }
2915
2916           grab_focus_and_unset_draw_keyfocus (tree_view);
2917           return TRUE;
2918         }
2919
2920       /* find the node that was clicked */
2921       new_y = TREE_WINDOW_Y_TO_RBTREE_Y(tree_view, event->y);
2922       if (new_y < 0)
2923         new_y = 0;
2924       y_offset = -_gtk_rbtree_find_offset (tree_view->priv->tree, new_y, &tree, &node);
2925
2926       if (node == NULL)
2927         {
2928           /* We clicked in dead space */
2929           grab_focus_and_unset_draw_keyfocus (tree_view);
2930           return TRUE;
2931         }
2932
2933       /* Get the path and the node */
2934       path = _gtk_tree_view_find_path (tree_view, tree, node);
2935       path_is_selectable = !row_is_separator (tree_view, NULL, path);
2936
2937       if (!path_is_selectable)
2938         {
2939           gtk_tree_path_free (path);
2940           grab_focus_and_unset_draw_keyfocus (tree_view);
2941           return TRUE;
2942         }
2943
2944       depth = gtk_tree_path_get_depth (path);
2945       background_area.y = y_offset + event->y;
2946       background_area.height = gtk_tree_view_get_row_height (tree_view, node);
2947       background_area.x = 0;
2948
2949
2950       /* Let the column have a chance at selecting it. */
2951       rtl = (gtk_widget_get_direction (GTK_WIDGET (tree_view)) == GTK_TEXT_DIR_RTL);
2952       for (list = (rtl ? g_list_last (tree_view->priv->columns) : g_list_first (tree_view->priv->columns));
2953            list; list = (rtl ? list->prev : list->next))
2954         {
2955           GtkTreeViewColumn *candidate = list->data;
2956
2957           if (!gtk_tree_view_column_get_visible (candidate))
2958             continue;
2959
2960           background_area.width = gtk_tree_view_column_get_width (candidate);
2961           if ((background_area.x > (gint) event->x) ||
2962               (background_area.x + background_area.width <= (gint) event->x))
2963             {
2964               background_area.x += background_area.width;
2965               continue;
2966             }
2967
2968           /* we found the focus column */
2969           column = candidate;
2970           cell_area = background_area;
2971           cell_area.width -= horizontal_separator;
2972           cell_area.height -= vertical_separator;
2973           cell_area.x += horizontal_separator/2;
2974           cell_area.y += vertical_separator/2;
2975           if (gtk_tree_view_is_expander_column (tree_view, column))
2976             {
2977               if (!rtl)
2978                 cell_area.x += (depth - 1) * tree_view->priv->level_indentation;
2979               cell_area.width -= (depth - 1) * tree_view->priv->level_indentation;
2980
2981               if (gtk_tree_view_draw_expanders (tree_view))
2982                 {
2983                   if (!rtl)
2984                     cell_area.x += depth * tree_view->priv->expander_size;
2985                   cell_area.width -= depth * tree_view->priv->expander_size;
2986                 }
2987             }
2988           break;
2989         }
2990
2991       if (column == NULL)
2992         {
2993           gtk_tree_path_free (path);
2994           grab_focus_and_unset_draw_keyfocus (tree_view);
2995           return FALSE;
2996         }
2997
2998       tree_view->priv->focus_column = column;
2999
3000       /* decide if we edit */
3001       if (event->type == GDK_BUTTON_PRESS && event->button == 1 &&
3002           !(event->state & gtk_accelerator_get_default_mod_mask ()))
3003         {
3004           GtkTreePath *anchor;
3005           GtkTreeIter iter;
3006
3007           gtk_tree_model_get_iter (tree_view->priv->model, &iter, path);
3008           gtk_tree_view_column_cell_set_cell_data (column,
3009                                                    tree_view->priv->model,
3010                                                    &iter,
3011                                                    GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_PARENT),
3012                                                    node->children?TRUE:FALSE);
3013
3014           if (tree_view->priv->anchor)
3015             anchor = gtk_tree_row_reference_get_path (tree_view->priv->anchor);
3016           else
3017             anchor = NULL;
3018
3019           if ((anchor && !gtk_tree_path_compare (anchor, path))
3020               || !_gtk_tree_view_column_has_editable_cell (column))
3021             {
3022               GtkCellEditable *cell_editable = NULL;
3023
3024               /* FIXME: get the right flags */
3025               guint flags = 0;
3026
3027               if (_gtk_tree_view_column_cell_event (column,
3028                                                     (GdkEvent *)event,
3029                                                     &cell_area, flags))
3030                 {
3031                   GtkCellArea *area = gtk_cell_layout_get_area (GTK_CELL_LAYOUT (column));
3032                   cell_editable = gtk_cell_area_get_edit_widget (area);
3033
3034                   if (cell_editable != NULL)
3035                     {
3036                       gtk_tree_path_free (path);
3037                       gtk_tree_path_free (anchor);
3038                       return TRUE;
3039                     }
3040                   column_handled_click = TRUE;
3041                 }
3042             }
3043           if (anchor)
3044             gtk_tree_path_free (anchor);
3045         }
3046
3047       extend_mod_mask =
3048         gtk_widget_get_modifier_mask (widget, GDK_MODIFIER_INTENT_EXTEND_SELECTION);
3049
3050       modify_mod_mask =
3051         gtk_widget_get_modifier_mask (widget, GDK_MODIFIER_INTENT_MODIFY_SELECTION);
3052
3053       /* select */
3054       node_selected = GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_SELECTED);
3055       pre_val = gtk_adjustment_get_value (tree_view->priv->vadjustment);
3056
3057       /* we only handle selection modifications on the first button press
3058        */
3059       if (event->type == GDK_BUTTON_PRESS)
3060         {
3061           GtkCellRenderer *focus_cell;
3062
3063           if ((event->state & modify_mod_mask) == modify_mod_mask)
3064             tree_view->priv->modify_selection_pressed = TRUE;
3065           if ((event->state & extend_mod_mask) == extend_mod_mask)
3066             tree_view->priv->extend_selection_pressed = TRUE;
3067
3068           /* We update the focus cell here, this is also needed if the
3069            * column does not contain an editable cell.  In this case,
3070            * GtkCellArea did not receive the event for processing (and
3071            * could not update the focus cell).
3072            */
3073           focus_cell = _gtk_tree_view_column_get_cell_at_pos (column,
3074                                                               &cell_area,
3075                                                               &background_area,
3076                                                               event->x,
3077                                                               event->y);
3078
3079           if (focus_cell)
3080             gtk_tree_view_column_focus_cell (column, focus_cell);
3081
3082           if (event->state & modify_mod_mask)
3083             {
3084               gtk_tree_view_real_set_cursor (tree_view, path, FALSE, TRUE);
3085               gtk_tree_view_real_toggle_cursor_row (tree_view);
3086             }
3087           else if (event->state & extend_mod_mask)
3088             {
3089               gtk_tree_view_real_set_cursor (tree_view, path, FALSE, TRUE);
3090               gtk_tree_view_real_select_cursor_row (tree_view, FALSE);
3091             }
3092           else
3093             {
3094               gtk_tree_view_real_set_cursor (tree_view, path, TRUE, TRUE);
3095             }
3096
3097           tree_view->priv->modify_selection_pressed = FALSE;
3098           tree_view->priv->extend_selection_pressed = FALSE;
3099         }
3100
3101       /* the treeview may have been scrolled because of _set_cursor,
3102        * correct here
3103        */
3104
3105       aft_val = gtk_adjustment_get_value (tree_view->priv->vadjustment);
3106       dval = pre_val - aft_val;
3107
3108       cell_area.y += dval;
3109       background_area.y += dval;
3110
3111       /* Save press to possibly begin a drag
3112        */
3113       if (!column_handled_click &&
3114           !tree_view->priv->in_grab &&
3115           tree_view->priv->pressed_button < 0)
3116         {
3117           tree_view->priv->pressed_button = event->button;
3118           tree_view->priv->press_start_x = event->x;
3119           tree_view->priv->press_start_y = event->y;
3120
3121           if (tree_view->priv->rubber_banding_enable
3122               && !node_selected
3123               && gtk_tree_selection_get_mode (tree_view->priv->selection) == GTK_SELECTION_MULTIPLE)
3124             {
3125               tree_view->priv->press_start_y += tree_view->priv->dy;
3126               tree_view->priv->rubber_band_x = event->x;
3127               tree_view->priv->rubber_band_y = event->y + tree_view->priv->dy;
3128               tree_view->priv->rubber_band_status = RUBBER_BAND_MAYBE_START;
3129
3130               if ((event->state & modify_mod_mask) == modify_mod_mask)
3131                 tree_view->priv->rubber_band_modify = TRUE;
3132               if ((event->state & extend_mod_mask) == extend_mod_mask)
3133                 tree_view->priv->rubber_band_extend = TRUE;
3134             }
3135         }
3136
3137       /* Test if a double click happened on the same row. */
3138       if (event->button == 1 && event->type == GDK_BUTTON_PRESS)
3139         {
3140           int double_click_time, double_click_distance;
3141
3142           g_object_get (gtk_settings_get_default (),
3143                         "gtk-double-click-time", &double_click_time,
3144                         "gtk-double-click-distance", &double_click_distance,
3145                         NULL);
3146
3147           /* Same conditions as _gdk_event_button_generate */
3148           if (tree_view->priv->last_button_x != -1 &&
3149               (event->time < tree_view->priv->last_button_time + double_click_time) &&
3150               (ABS (event->x - tree_view->priv->last_button_x) <= double_click_distance) &&
3151               (ABS (event->y - tree_view->priv->last_button_y) <= double_click_distance))
3152             {
3153               /* We do no longer compare paths of this row and the
3154                * row clicked previously.  We use the double click
3155                * distance to decide whether this is a valid click,
3156                * allowing the mouse to slightly move over another row.
3157                */
3158               row_double_click = TRUE;
3159
3160               tree_view->priv->last_button_time = 0;
3161               tree_view->priv->last_button_x = -1;
3162               tree_view->priv->last_button_y = -1;
3163             }
3164           else
3165             {
3166               tree_view->priv->last_button_time = event->time;
3167               tree_view->priv->last_button_x = event->x;
3168               tree_view->priv->last_button_y = event->y;
3169             }
3170         }
3171
3172       if (row_double_click)
3173         {
3174           gtk_grab_remove (widget);
3175           gtk_tree_view_row_activated (tree_view, path, column);
3176
3177           if (tree_view->priv->pressed_button == event->button)
3178             tree_view->priv->pressed_button = -1;
3179         }
3180
3181       gtk_tree_path_free (path);
3182
3183       /* If we activated the row through a double click we don't want to grab
3184        * focus back, as moving focus to another widget is pretty common.
3185        */
3186       if (!row_double_click)
3187         grab_focus_and_unset_draw_keyfocus (tree_view);
3188
3189       return TRUE;
3190     }
3191
3192   /* We didn't click in the window.  Let's check to see if we clicked on a column resize window.
3193    */
3194   for (i = 0, list = tree_view->priv->columns; list; list = list->next, i++)
3195     {
3196       column = list->data;
3197       if (event->window == _gtk_tree_view_column_get_window (column) &&
3198           gtk_tree_view_column_get_resizable (column) &&
3199           _gtk_tree_view_column_get_window (column))
3200         {
3201           gpointer drag_data;
3202
3203           if (event->type == GDK_2BUTTON_PRESS &&
3204               gtk_tree_view_column_get_sizing (column) != GTK_TREE_VIEW_COLUMN_AUTOSIZE)
3205             {
3206               _gtk_tree_view_column_set_use_resized_width (column, FALSE);
3207               _gtk_tree_view_column_autosize (tree_view, column);
3208               return TRUE;
3209             }
3210
3211           if (gdk_device_grab (gdk_event_get_device ((GdkEvent*)event),
3212                                _gtk_tree_view_column_get_window (column),
3213                                GDK_OWNERSHIP_NONE,
3214                                FALSE,
3215                                GDK_POINTER_MOTION_HINT_MASK
3216                                 | GDK_BUTTON1_MOTION_MASK
3217                                 | GDK_BUTTON_RELEASE_MASK,
3218                                NULL,
3219                                event->time) != GDK_GRAB_SUCCESS)
3220             return FALSE;
3221
3222           gtk_grab_add (widget);
3223           tree_view->priv->in_column_resize = TRUE;
3224
3225           _gtk_tree_view_column_set_resized_width (column, gtk_tree_view_column_get_width (column) -
3226                                                    tree_view->priv->last_extra_space_per_column);
3227
3228           /* block attached dnd signal handler */
3229           drag_data = g_object_get_data (G_OBJECT (widget), "gtk-site-data");
3230           if (drag_data)
3231             g_signal_handlers_block_matched (widget,
3232                                              G_SIGNAL_MATCH_DATA,
3233                                              0, 0, NULL, NULL,
3234                                              drag_data);
3235
3236           tree_view->priv->drag_pos = i;
3237           tree_view->priv->x_drag = gtk_tree_view_column_get_x_offset (column) + (rtl ? 0 : gtk_tree_view_column_get_width (column));
3238
3239           if (!gtk_widget_has_focus (widget))
3240             gtk_widget_grab_focus (widget);
3241
3242           return TRUE;
3243         }
3244     }
3245   return FALSE;
3246 }
3247
3248 /* GtkWidget::button_release_event helper */
3249 static gboolean
3250 gtk_tree_view_button_release_drag_column (GtkWidget      *widget,
3251                                           GdkEventButton *event)
3252 {
3253   GtkTreeView *tree_view;
3254   GtkWidget *button;
3255   GList *l;
3256   gboolean rtl;
3257   GdkDevice *device, *other;
3258
3259   tree_view = GTK_TREE_VIEW (widget);
3260
3261   rtl = (gtk_widget_get_direction (widget) == GTK_TEXT_DIR_RTL);
3262   device = gdk_event_get_device ((GdkEvent*)event);
3263   other = gdk_device_get_associated_device (device);
3264   gdk_device_ungrab (device, event->time);
3265   gdk_device_ungrab (other, event->time);
3266
3267   /* Move the button back */
3268   button = gtk_tree_view_column_get_button (tree_view->priv->drag_column);
3269   g_object_ref (button);
3270   gtk_container_remove (GTK_CONTAINER (tree_view), button);
3271   gtk_widget_set_parent_window (button, tree_view->priv->header_window);
3272   gtk_widget_set_parent (button, GTK_WIDGET (tree_view));
3273   g_object_unref (button);
3274   gtk_widget_queue_resize (widget);
3275   if (gtk_tree_view_column_get_resizable (tree_view->priv->drag_column))
3276     {
3277       gdk_window_raise (_gtk_tree_view_column_get_window (tree_view->priv->drag_column));
3278       gdk_window_show (_gtk_tree_view_column_get_window (tree_view->priv->drag_column));
3279     }
3280   else
3281     gdk_window_hide (_gtk_tree_view_column_get_window (tree_view->priv->drag_column));
3282
3283   gtk_widget_grab_focus (button);
3284
3285   if (rtl)
3286     {
3287       if (tree_view->priv->cur_reorder &&
3288           tree_view->priv->cur_reorder->right_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->right_column);
3291     }
3292   else
3293     {
3294       if (tree_view->priv->cur_reorder &&
3295           tree_view->priv->cur_reorder->left_column != tree_view->priv->drag_column)
3296         gtk_tree_view_move_column_after (tree_view, tree_view->priv->drag_column,
3297                                          tree_view->priv->cur_reorder->left_column);
3298     }
3299   tree_view->priv->drag_column = NULL;
3300   gdk_window_hide (tree_view->priv->drag_window);
3301
3302   for (l = tree_view->priv->column_drag_info; l != NULL; l = l->next)
3303     g_slice_free (GtkTreeViewColumnReorder, l->data);
3304   g_list_free (tree_view->priv->column_drag_info);
3305   tree_view->priv->column_drag_info = NULL;
3306   tree_view->priv->cur_reorder = NULL;
3307
3308   if (tree_view->priv->drag_highlight_window)
3309     gdk_window_hide (tree_view->priv->drag_highlight_window);
3310
3311   /* Reset our flags */
3312   tree_view->priv->drag_column_window_state = DRAG_COLUMN_WINDOW_STATE_UNSET;
3313   tree_view->priv->in_column_drag = FALSE;
3314
3315   return TRUE;
3316 }
3317
3318 /* GtkWidget::button_release_event helper */
3319 static gboolean
3320 gtk_tree_view_button_release_column_resize (GtkWidget      *widget,
3321                                             GdkEventButton *event)
3322 {
3323   GtkTreeView *tree_view;
3324   gpointer drag_data;
3325
3326   tree_view = GTK_TREE_VIEW (widget);
3327
3328   tree_view->priv->drag_pos = -1;
3329
3330   /* unblock attached dnd signal handler */
3331   drag_data = g_object_get_data (G_OBJECT (widget), "gtk-site-data");
3332   if (drag_data)
3333     g_signal_handlers_unblock_matched (widget,
3334                                        G_SIGNAL_MATCH_DATA,
3335                                        0, 0, NULL, NULL,
3336                                        drag_data);
3337
3338   tree_view->priv->in_column_resize = FALSE;
3339   gtk_grab_remove (widget);
3340   gdk_device_ungrab (gdk_event_get_device ((GdkEvent*)event), event->time);
3341   return TRUE;
3342 }
3343
3344 static gboolean
3345 gtk_tree_view_button_release (GtkWidget      *widget,
3346                               GdkEventButton *event)
3347 {
3348   GtkTreeView *tree_view = GTK_TREE_VIEW (widget);
3349
3350   if (tree_view->priv->in_column_drag)
3351     return gtk_tree_view_button_release_drag_column (widget, event);
3352
3353   if (tree_view->priv->rubber_band_status)
3354     gtk_tree_view_stop_rubber_band (tree_view);
3355
3356   if (tree_view->priv->pressed_button == event->button)
3357     tree_view->priv->pressed_button = -1;
3358
3359   if (tree_view->priv->in_column_resize)
3360     return gtk_tree_view_button_release_column_resize (widget, event);
3361
3362   if (tree_view->priv->button_pressed_node == NULL)
3363     return FALSE;
3364
3365   if (event->button == 1)
3366     {
3367       if (tree_view->priv->button_pressed_node == tree_view->priv->prelight_node &&
3368           tree_view->priv->arrow_prelit)
3369         {
3370           GtkTreePath *path = NULL;
3371
3372           path = _gtk_tree_view_find_path (tree_view,
3373                                            tree_view->priv->button_pressed_tree,
3374                                            tree_view->priv->button_pressed_node);
3375           /* Actually activate the node */
3376           if (tree_view->priv->button_pressed_node->children == NULL)
3377             gtk_tree_view_real_expand_row (tree_view, path,
3378                                            tree_view->priv->button_pressed_tree,
3379                                            tree_view->priv->button_pressed_node,
3380                                            FALSE, TRUE);
3381           else
3382             gtk_tree_view_real_collapse_row (GTK_TREE_VIEW (widget), path,
3383                                              tree_view->priv->button_pressed_tree,
3384                                              tree_view->priv->button_pressed_node, TRUE);
3385           gtk_tree_path_free (path);
3386         }
3387
3388       gtk_grab_remove (widget);
3389       tree_view->priv->button_pressed_tree = NULL;
3390       tree_view->priv->button_pressed_node = NULL;
3391     }
3392
3393   return TRUE;
3394 }
3395
3396 static gboolean
3397 gtk_tree_view_grab_broken (GtkWidget          *widget,
3398                            GdkEventGrabBroken *event)
3399 {
3400   GtkTreeView *tree_view = GTK_TREE_VIEW (widget);
3401
3402   if (tree_view->priv->in_column_drag)
3403     gtk_tree_view_button_release_drag_column (widget, (GdkEventButton *)event);
3404
3405   if (tree_view->priv->in_column_resize)
3406     gtk_tree_view_button_release_column_resize (widget, (GdkEventButton *)event);
3407
3408   return TRUE;
3409 }
3410
3411 #if 0
3412 static gboolean
3413 gtk_tree_view_configure (GtkWidget *widget,
3414                          GdkEventConfigure *event)
3415 {
3416   GtkTreeView *tree_view;
3417
3418   tree_view = GTK_TREE_VIEW (widget);
3419   tree_view->priv->search_position_func (tree_view, tree_view->priv->search_window);
3420
3421   return FALSE;
3422 }
3423 #endif
3424
3425 /* GtkWidget::motion_event function set.
3426  */
3427
3428 static gboolean
3429 coords_are_over_arrow (GtkTreeView *tree_view,
3430                        GtkRBTree   *tree,
3431                        GtkRBNode   *node,
3432                        /* these are in bin window coords */
3433                        gint         x,
3434                        gint         y)
3435 {
3436   GdkRectangle arrow;
3437   gint x2;
3438
3439   if (!gtk_widget_get_realized (GTK_WIDGET (tree_view)))
3440     return FALSE;
3441
3442   if ((node->flags & GTK_RBNODE_IS_PARENT) == 0)
3443     return FALSE;
3444
3445   arrow.y = gtk_tree_view_get_row_y_offset (tree_view, tree, node);
3446   arrow.height = gtk_tree_view_get_row_height (tree_view, node);
3447
3448   gtk_tree_view_get_arrow_xrange (tree_view, tree, &arrow.x, &x2);
3449
3450   arrow.width = x2 - arrow.x;
3451
3452   return (x >= arrow.x &&
3453           x < (arrow.x + arrow.width) &&
3454           y >= arrow.y &&
3455           y < (arrow.y + arrow.height));
3456 }
3457
3458 static gboolean
3459 auto_expand_timeout (gpointer data)
3460 {
3461   GtkTreeView *tree_view = GTK_TREE_VIEW (data);
3462   GtkTreePath *path;
3463
3464   if (tree_view->priv->prelight_node)
3465     {
3466       path = _gtk_tree_view_find_path (tree_view,
3467                                        tree_view->priv->prelight_tree,
3468                                        tree_view->priv->prelight_node);
3469
3470       if (tree_view->priv->prelight_node->children)
3471         gtk_tree_view_collapse_row (tree_view, path);
3472       else
3473         gtk_tree_view_expand_row (tree_view, path, FALSE);
3474
3475       gtk_tree_path_free (path);
3476     }
3477
3478   tree_view->priv->auto_expand_timeout = 0;
3479
3480   return FALSE;
3481 }
3482
3483 static void
3484 remove_auto_expand_timeout (GtkTreeView *tree_view)
3485 {
3486   if (tree_view->priv->auto_expand_timeout != 0)
3487     {
3488       g_source_remove (tree_view->priv->auto_expand_timeout);
3489       tree_view->priv->auto_expand_timeout = 0;
3490     }
3491 }
3492
3493 static void
3494 do_prelight (GtkTreeView *tree_view,
3495              GtkRBTree   *tree,
3496              GtkRBNode   *node,
3497              /* these are in bin_window coords */
3498              gint         x,
3499              gint         y)
3500 {
3501   if (tree_view->priv->prelight_tree == tree &&
3502       tree_view->priv->prelight_node == node)
3503     {
3504       /*  We are still on the same node,
3505           but we might need to take care of the arrow  */
3506
3507       if (tree && node && gtk_tree_view_draw_expanders (tree_view))
3508         {
3509           gboolean over_arrow;
3510
3511           over_arrow = coords_are_over_arrow (tree_view, tree, node, x, y);
3512
3513           if (over_arrow != tree_view->priv->arrow_prelit)
3514             {
3515               if (over_arrow)
3516                 tree_view->priv->arrow_prelit = TRUE;
3517               else
3518                 tree_view->priv->arrow_prelit = FALSE;
3519
3520               gtk_tree_view_queue_draw_arrow (tree_view, tree, node);
3521             }
3522         }
3523
3524       return;
3525     }
3526
3527   if (tree_view->priv->prelight_tree && tree_view->priv->prelight_node)
3528     {
3529       /*  Unprelight the old node and arrow  */
3530
3531       GTK_RBNODE_UNSET_FLAG (tree_view->priv->prelight_node,
3532                              GTK_RBNODE_IS_PRELIT);
3533
3534       if (tree_view->priv->arrow_prelit
3535           && gtk_tree_view_draw_expanders (tree_view))
3536         {
3537           tree_view->priv->arrow_prelit = FALSE;
3538
3539           gtk_tree_view_queue_draw_arrow (tree_view,
3540                                           tree_view->priv->prelight_tree,
3541                                           tree_view->priv->prelight_node);
3542         }
3543
3544       _gtk_tree_view_queue_draw_node (tree_view,
3545                                       tree_view->priv->prelight_tree,
3546                                       tree_view->priv->prelight_node,
3547                                       NULL);
3548     }
3549
3550
3551   if (tree_view->priv->hover_expand)
3552     remove_auto_expand_timeout (tree_view);
3553
3554   /*  Set the new prelight values  */
3555   tree_view->priv->prelight_node = node;
3556   tree_view->priv->prelight_tree = tree;
3557
3558   if (!node || !tree)
3559     return;
3560
3561   /*  Prelight the new node and arrow  */
3562
3563   if (gtk_tree_view_draw_expanders (tree_view)
3564       && coords_are_over_arrow (tree_view, tree, node, x, y))
3565     {
3566       tree_view->priv->arrow_prelit = TRUE;
3567
3568       gtk_tree_view_queue_draw_arrow (tree_view, tree, node);
3569     }
3570
3571   GTK_RBNODE_SET_FLAG (node, GTK_RBNODE_IS_PRELIT);
3572
3573   _gtk_tree_view_queue_draw_node (tree_view, tree, node, NULL);
3574
3575   if (tree_view->priv->hover_expand)
3576     {
3577       tree_view->priv->auto_expand_timeout =
3578         gdk_threads_add_timeout (AUTO_EXPAND_TIMEOUT, auto_expand_timeout, tree_view);
3579     }
3580 }
3581
3582 static void
3583 prelight_or_select (GtkTreeView *tree_view,
3584                     GtkRBTree   *tree,
3585                     GtkRBNode   *node,
3586                     /* these are in bin_window coords */
3587                     gint         x,
3588                     gint         y)
3589 {
3590   GtkSelectionMode mode = gtk_tree_selection_get_mode (tree_view->priv->selection);
3591
3592   if (tree_view->priv->hover_selection &&
3593       (mode == GTK_SELECTION_SINGLE || mode == GTK_SELECTION_BROWSE) &&
3594       !(tree_view->priv->edited_column &&
3595         gtk_cell_area_get_edit_widget
3596         (gtk_cell_layout_get_area (GTK_CELL_LAYOUT (tree_view->priv->edited_column)))))
3597     {
3598       if (node)
3599         {
3600           if (!GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_SELECTED))
3601             {
3602               GtkTreePath *path;
3603
3604               path = _gtk_tree_view_find_path (tree_view, tree, node);
3605               gtk_tree_selection_select_path (tree_view->priv->selection, path);
3606               if (GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_SELECTED))
3607                 {
3608                   tree_view->priv->draw_keyfocus = FALSE;
3609                   gtk_tree_view_real_set_cursor (tree_view, path, FALSE, FALSE);
3610                 }
3611               gtk_tree_path_free (path);
3612             }
3613         }
3614
3615       else if (mode == GTK_SELECTION_SINGLE)
3616         gtk_tree_selection_unselect_all (tree_view->priv->selection);
3617     }
3618
3619     do_prelight (tree_view, tree, node, x, y);
3620 }
3621
3622 static void
3623 ensure_unprelighted (GtkTreeView *tree_view)
3624 {
3625   do_prelight (tree_view,
3626                NULL, NULL,
3627                -1000, -1000); /* coords not possibly over an arrow */
3628
3629   g_assert (tree_view->priv->prelight_node == NULL);
3630 }
3631
3632 static void
3633 update_prelight (GtkTreeView *tree_view,
3634                  gint         x,
3635                  gint         y)
3636 {
3637   int new_y;
3638   GtkRBTree *tree;
3639   GtkRBNode *node;
3640
3641   if (tree_view->priv->tree == NULL)
3642     return;
3643
3644   if (x == -10000)
3645     {
3646       ensure_unprelighted (tree_view);
3647       return;
3648     }
3649
3650   new_y = TREE_WINDOW_Y_TO_RBTREE_Y (tree_view, y);
3651   if (new_y < 0)
3652     new_y = 0;
3653
3654   _gtk_rbtree_find_offset (tree_view->priv->tree,
3655                            new_y, &tree, &node);
3656
3657   if (node)
3658     prelight_or_select (tree_view, tree, node, x, y);
3659 }
3660
3661
3662
3663
3664 /* Our motion arrow is either a box (in the case of the original spot)
3665  * or an arrow.  It is expander_size wide.
3666  */
3667 /*
3668  * 11111111111111
3669  * 01111111111110
3670  * 00111111111100
3671  * 00011111111000
3672  * 00001111110000
3673  * 00000111100000
3674  * 00000111100000
3675  * 00000111100000
3676  * ~ ~ ~ ~ ~ ~ ~
3677  * 00000111100000
3678  * 00000111100000
3679  * 00000111100000
3680  * 00001111110000
3681  * 00011111111000
3682  * 00111111111100
3683  * 01111111111110
3684  * 11111111111111
3685  */
3686
3687 static void
3688 gtk_tree_view_motion_draw_column_motion_arrow (GtkTreeView *tree_view)
3689 {
3690   GtkTreeViewColumnReorder *reorder = tree_view->priv->cur_reorder;
3691   GtkWidget *widget = GTK_WIDGET (tree_view);
3692   cairo_surface_t *mask_image;
3693   cairo_region_t *mask_region;
3694   gint x;
3695   gint y;
3696   gint width;
3697   gint height;
3698   gint arrow_type = DRAG_COLUMN_WINDOW_STATE_UNSET;
3699   GdkWindowAttr attributes;
3700   guint attributes_mask;
3701   cairo_t *cr;
3702
3703   if (!reorder ||
3704       reorder->left_column == tree_view->priv->drag_column ||
3705       reorder->right_column == tree_view->priv->drag_column)
3706     arrow_type = DRAG_COLUMN_WINDOW_STATE_ORIGINAL;
3707   else if (reorder->left_column || reorder->right_column)
3708     {
3709       GtkAllocation left_allocation, right_allocation;
3710       GdkRectangle visible_rect;
3711       GtkWidget *button;
3712
3713       gtk_tree_view_get_visible_rect (tree_view, &visible_rect);
3714       if (reorder->left_column)
3715         {
3716           button = gtk_tree_view_column_get_button (reorder->left_column);
3717           gtk_widget_get_allocation (button, &left_allocation);
3718           x = left_allocation.x + left_allocation.width;
3719         }
3720       else
3721         {
3722           button = gtk_tree_view_column_get_button (reorder->right_column);
3723           gtk_widget_get_allocation (button, &right_allocation);
3724           x = right_allocation.x;
3725         }
3726
3727       if (x < visible_rect.x)
3728         arrow_type = DRAG_COLUMN_WINDOW_STATE_ARROW_LEFT;
3729       else if (x > visible_rect.x + visible_rect.width)
3730         arrow_type = DRAG_COLUMN_WINDOW_STATE_ARROW_RIGHT;
3731       else
3732         arrow_type = DRAG_COLUMN_WINDOW_STATE_ARROW;
3733     }
3734
3735   /* We want to draw the rectangle over the initial location. */
3736   if (arrow_type == DRAG_COLUMN_WINDOW_STATE_ORIGINAL)
3737     {
3738       if (tree_view->priv->drag_column_window_state != DRAG_COLUMN_WINDOW_STATE_ORIGINAL)
3739         {
3740           GtkAllocation drag_allocation;
3741           GtkWidget    *button;
3742
3743           if (tree_view->priv->drag_highlight_window)
3744             {
3745               gdk_window_set_user_data (tree_view->priv->drag_highlight_window,
3746                                         NULL);
3747               gdk_window_destroy (tree_view->priv->drag_highlight_window);
3748             }
3749
3750           button = gtk_tree_view_column_get_button (tree_view->priv->drag_column);
3751           attributes.window_type = GDK_WINDOW_CHILD;
3752           attributes.wclass = GDK_INPUT_OUTPUT;
3753           attributes.x = tree_view->priv->drag_column_x;
3754           attributes.y = 0;
3755           gtk_widget_get_allocation (button, &drag_allocation);
3756           width = attributes.width = drag_allocation.width;
3757           height = attributes.height = drag_allocation.height;
3758           attributes.visual = gtk_widget_get_visual (GTK_WIDGET (tree_view));
3759           attributes.event_mask = GDK_VISIBILITY_NOTIFY_MASK | GDK_EXPOSURE_MASK | GDK_POINTER_MOTION_MASK;
3760           attributes_mask = GDK_WA_X | GDK_WA_Y | GDK_WA_VISUAL;
3761           tree_view->priv->drag_highlight_window = gdk_window_new (tree_view->priv->header_window, &attributes, attributes_mask);
3762           gdk_window_set_user_data (tree_view->priv->drag_highlight_window, GTK_WIDGET (tree_view));
3763
3764           mask_image = cairo_image_surface_create (CAIRO_FORMAT_A1, width, height);
3765           cr = cairo_create (mask_image);
3766
3767           cairo_rectangle (cr, 1, 1, width - 2, height - 2);
3768           cairo_stroke (cr);
3769           cairo_destroy (cr);
3770
3771           mask_region = gdk_cairo_region_create_from_surface (mask_image);
3772           gdk_window_shape_combine_region (tree_view->priv->drag_highlight_window,
3773                                            mask_region, 0, 0);
3774
3775           cairo_region_destroy (mask_region);
3776           cairo_surface_destroy (mask_image);
3777
3778           tree_view->priv->drag_column_window_state = DRAG_COLUMN_WINDOW_STATE_ORIGINAL;
3779         }
3780     }
3781   else if (arrow_type == DRAG_COLUMN_WINDOW_STATE_ARROW)
3782     {
3783       GtkAllocation button_allocation;
3784       GtkWidget    *button;
3785
3786       width = tree_view->priv->expander_size;
3787
3788       /* Get x, y, width, height of arrow */
3789       gdk_window_get_origin (tree_view->priv->header_window, &x, &y);
3790       if (reorder->left_column)
3791         {
3792           button = gtk_tree_view_column_get_button (reorder->left_column);
3793           gtk_widget_get_allocation (button, &button_allocation);
3794           x += button_allocation.x + button_allocation.width - width/2;
3795           height = button_allocation.height;
3796         }
3797       else
3798         {
3799           button = gtk_tree_view_column_get_button (reorder->right_column);
3800           gtk_widget_get_allocation (button, &button_allocation);
3801           x += button_allocation.x - width/2;
3802           height = button_allocation.height;
3803         }
3804       y -= tree_view->priv->expander_size/2; /* The arrow takes up only half the space */
3805       height += tree_view->priv->expander_size;
3806
3807       /* Create the new window */
3808       if (tree_view->priv->drag_column_window_state != DRAG_COLUMN_WINDOW_STATE_ARROW)
3809         {
3810           if (tree_view->priv->drag_highlight_window)
3811             {
3812               gdk_window_set_user_data (tree_view->priv->drag_highlight_window,
3813                                         NULL);
3814               gdk_window_destroy (tree_view->priv->drag_highlight_window);
3815             }
3816
3817           attributes.window_type = GDK_WINDOW_TEMP;
3818           attributes.wclass = GDK_INPUT_OUTPUT;
3819           attributes.visual = gtk_widget_get_visual (GTK_WIDGET (tree_view));
3820           attributes.event_mask = GDK_VISIBILITY_NOTIFY_MASK | GDK_EXPOSURE_MASK | GDK_POINTER_MOTION_MASK;
3821           attributes_mask = GDK_WA_X | GDK_WA_Y | GDK_WA_VISUAL;
3822           attributes.x = x;
3823           attributes.y = y;
3824           attributes.width = width;
3825           attributes.height = height;
3826           tree_view->priv->drag_highlight_window = gdk_window_new (gtk_widget_get_root_window (widget),
3827                                                                    &attributes, attributes_mask);
3828           gdk_window_set_user_data (tree_view->priv->drag_highlight_window, GTK_WIDGET (tree_view));
3829
3830           mask_image = cairo_image_surface_create (CAIRO_FORMAT_A1, width, height);
3831
3832           cr = cairo_create (mask_image);
3833           cairo_move_to (cr, 0, 0);
3834           cairo_line_to (cr, width, 0);
3835           cairo_line_to (cr, width / 2., width / 2);
3836           cairo_move_to (cr, 0, height);
3837           cairo_line_to (cr, width, height);
3838           cairo_line_to (cr, width / 2., height - width / 2.);
3839           cairo_fill (cr);
3840           cairo_destroy (cr);
3841
3842           mask_region = gdk_cairo_region_create_from_surface (mask_image);
3843           gdk_window_shape_combine_region (tree_view->priv->drag_highlight_window,
3844                                            mask_region, 0, 0);
3845
3846           cairo_region_destroy (mask_region);
3847           cairo_surface_destroy (mask_image);
3848         }
3849
3850       tree_view->priv->drag_column_window_state = DRAG_COLUMN_WINDOW_STATE_ARROW;
3851       gdk_window_move (tree_view->priv->drag_highlight_window, x, y);
3852     }
3853   else if (arrow_type == DRAG_COLUMN_WINDOW_STATE_ARROW_LEFT ||
3854            arrow_type == DRAG_COLUMN_WINDOW_STATE_ARROW_RIGHT)
3855     {
3856       GtkAllocation allocation;
3857       GtkWidget    *button;
3858
3859       width = tree_view->priv->expander_size;
3860
3861       /* Get x, y, width, height of arrow */
3862       width = width/2; /* remember, the arrow only takes half the available width */
3863       gdk_window_get_origin (gtk_widget_get_window (widget),
3864                              &x, &y);
3865       if (arrow_type == DRAG_COLUMN_WINDOW_STATE_ARROW_RIGHT)
3866         {
3867           gtk_widget_get_allocation (widget, &allocation);
3868           x += allocation.width - width;
3869         }
3870
3871       if (reorder->left_column)
3872         {
3873           button = gtk_tree_view_column_get_button (reorder->left_column);
3874           gtk_widget_get_allocation (button, &allocation);
3875           height = allocation.height;
3876         }
3877       else
3878         {
3879           button = gtk_tree_view_column_get_button (reorder->right_column);
3880           gtk_widget_get_allocation (button, &allocation);
3881           height = allocation.height;
3882         }
3883
3884       y -= tree_view->priv->expander_size;
3885       height += 2*tree_view->priv->expander_size;
3886
3887       /* Create the new window */
3888       if (tree_view->priv->drag_column_window_state != DRAG_COLUMN_WINDOW_STATE_ARROW_LEFT &&
3889           tree_view->priv->drag_column_window_state != DRAG_COLUMN_WINDOW_STATE_ARROW_RIGHT)
3890         {
3891           if (tree_view->priv->drag_highlight_window)
3892             {
3893               gdk_window_set_user_data (tree_view->priv->drag_highlight_window,
3894                                         NULL);
3895               gdk_window_destroy (tree_view->priv->drag_highlight_window);
3896             }
3897
3898           attributes.window_type = GDK_WINDOW_TEMP;
3899           attributes.wclass = GDK_INPUT_OUTPUT;
3900           attributes.visual = gtk_widget_get_visual (GTK_WIDGET (tree_view));
3901           attributes.event_mask = GDK_VISIBILITY_NOTIFY_MASK | GDK_EXPOSURE_MASK | GDK_POINTER_MOTION_MASK;
3902           attributes_mask = GDK_WA_X | GDK_WA_Y | GDK_WA_VISUAL;
3903           attributes.x = x;
3904           attributes.y = y;
3905           attributes.width = width;
3906           attributes.height = height;
3907           tree_view->priv->drag_highlight_window = gdk_window_new (NULL, &attributes, attributes_mask);
3908           gdk_window_set_user_data (tree_view->priv->drag_highlight_window, GTK_WIDGET (tree_view));
3909
3910           mask_image = cairo_image_surface_create (CAIRO_FORMAT_A1, width, height);
3911
3912           cr = cairo_create (mask_image);
3913           /* mirror if we're on the left */
3914           if (arrow_type == DRAG_COLUMN_WINDOW_STATE_ARROW_LEFT)
3915             {
3916               cairo_translate (cr, width, 0);
3917               cairo_scale (cr, -1, 1);
3918             }
3919           cairo_move_to (cr, 0, 0);
3920           cairo_line_to (cr, width, width);
3921           cairo_line_to (cr, 0, tree_view->priv->expander_size);
3922           cairo_move_to (cr, 0, height);
3923           cairo_line_to (cr, width, height - width);
3924           cairo_line_to (cr, 0, height - tree_view->priv->expander_size);
3925           cairo_fill (cr);
3926           cairo_destroy (cr);
3927
3928           mask_region = gdk_cairo_region_create_from_surface (mask_image);
3929           gdk_window_shape_combine_region (tree_view->priv->drag_highlight_window,
3930                                            mask_region, 0, 0);
3931
3932           cairo_region_destroy (mask_region);
3933           cairo_surface_destroy (mask_image);
3934         }
3935
3936       tree_view->priv->drag_column_window_state = arrow_type;
3937       gdk_window_move (tree_view->priv->drag_highlight_window, x, y);
3938    }
3939   else
3940     {
3941       g_warning (G_STRLOC"Invalid GtkTreeViewColumnReorder struct");
3942       gdk_window_hide (tree_view->priv->drag_highlight_window);
3943       return;
3944     }
3945
3946   gdk_window_show (tree_view->priv->drag_highlight_window);
3947   gdk_window_raise (tree_view->priv->drag_highlight_window);
3948 }
3949
3950 static gboolean
3951 gtk_tree_view_motion_resize_column (GtkWidget      *widget,
3952                                     GdkEventMotion *event)
3953 {
3954   gint x;
3955   gint new_width;
3956   GtkTreeViewColumn *column;
3957   GtkTreeView *tree_view = GTK_TREE_VIEW (widget);
3958
3959   column = gtk_tree_view_get_column (tree_view, tree_view->priv->drag_pos);
3960
3961   if (event->is_hint || event->window != gtk_widget_get_window (widget))
3962     gdk_window_get_device_position (gtk_widget_get_window (widget),
3963                                     gdk_event_get_device ((GdkEvent *) event),
3964                                     &x, NULL, NULL);
3965   else
3966     x = event->x;
3967
3968   if (tree_view->priv->hadjustment)
3969     x += gtk_adjustment_get_value (tree_view->priv->hadjustment);
3970
3971   new_width = gtk_tree_view_new_column_width (tree_view,
3972                                               tree_view->priv->drag_pos, &x);
3973   if (x != tree_view->priv->x_drag &&
3974       (new_width != gtk_tree_view_column_get_fixed_width (column)))
3975     {
3976       _gtk_tree_view_column_set_use_resized_width (column, TRUE);
3977
3978       if (gtk_tree_view_column_get_expand (column))
3979         new_width -= tree_view->priv->last_extra_space_per_column;
3980
3981       _gtk_tree_view_column_set_resized_width (column, new_width);
3982
3983
3984       gtk_widget_queue_resize (widget);
3985     }
3986
3987   return FALSE;
3988 }
3989
3990
3991 static void
3992 gtk_tree_view_update_current_reorder (GtkTreeView *tree_view,
3993                                       GdkEvent    *event)
3994 {
3995   GtkTreeViewColumnReorder *reorder = NULL;
3996   GList *list;
3997   gint mouse_x;
3998
3999   gdk_window_get_device_position (tree_view->priv->header_window,
4000                                   gdk_event_get_device (event),
4001                                   &mouse_x, NULL, NULL);
4002   for (list = tree_view->priv->column_drag_info; list; list = list->next)
4003     {
4004       reorder = (GtkTreeViewColumnReorder *) list->data;
4005       if (mouse_x >= reorder->left_align && mouse_x < reorder->right_align)
4006         break;
4007       reorder = NULL;
4008     }
4009
4010   /*  if (reorder && reorder == tree_view->priv->cur_reorder)
4011       return;*/
4012
4013   tree_view->priv->cur_reorder = reorder;
4014   gtk_tree_view_motion_draw_column_motion_arrow (tree_view);
4015 }
4016
4017 static void
4018 gtk_tree_view_vertical_autoscroll (GtkTreeView *tree_view)
4019 {
4020   GdkRectangle visible_rect;
4021   gint y;
4022   gint offset;
4023
4024   gdk_window_get_device_position (tree_view->priv->bin_window,
4025                                   gdk_device_manager_get_client_pointer (
4026                                     gdk_display_get_device_manager (
4027                                       gtk_widget_get_display (GTK_WIDGET (tree_view)))),
4028                                   NULL, &y, NULL);
4029   y += tree_view->priv->dy;
4030
4031   gtk_tree_view_get_visible_rect (tree_view, &visible_rect);
4032
4033   /* see if we are near the edge. */
4034   offset = y - (visible_rect.y + 2 * SCROLL_EDGE_SIZE);
4035   if (offset > 0)
4036     {
4037       offset = y - (visible_rect.y + visible_rect.height - 2 * SCROLL_EDGE_SIZE);
4038       if (offset < 0)
4039         return;
4040     }
4041
4042   gtk_adjustment_set_value (tree_view->priv->vadjustment,
4043                             MAX (gtk_adjustment_get_value (tree_view->priv->vadjustment) + offset, 0.0));
4044 }
4045
4046 static gboolean
4047 gtk_tree_view_horizontal_autoscroll (GtkTreeView *tree_view,
4048                                      GdkEvent    *event)
4049 {
4050   GdkRectangle visible_rect;
4051   gint x;
4052   gint offset;
4053
4054   gdk_window_get_device_position (tree_view->priv->bin_window,
4055                                   gdk_event_get_device (event),
4056                                   &x, NULL, NULL);
4057
4058   gtk_tree_view_get_visible_rect (tree_view, &visible_rect);
4059
4060   /* See if we are near the edge. */
4061   offset = x - (visible_rect.x + SCROLL_EDGE_SIZE);
4062   if (offset > 0)
4063     {
4064       offset = x - (visible_rect.x + visible_rect.width - SCROLL_EDGE_SIZE);
4065       if (offset < 0)
4066         return TRUE;
4067     }
4068   offset = offset/3;
4069
4070   gtk_adjustment_set_value (tree_view->priv->hadjustment,
4071                             MAX (gtk_adjustment_get_value (tree_view->priv->hadjustment) + offset, 0.0));
4072
4073   return TRUE;
4074
4075 }
4076
4077 static gboolean
4078 gtk_tree_view_motion_drag_column (GtkWidget      *widget,
4079                                   GdkEventMotion *event)
4080 {
4081   GtkAllocation allocation, button_allocation;
4082   GtkTreeView *tree_view = (GtkTreeView *) widget;
4083   GtkTreeViewColumn *column = tree_view->priv->drag_column;
4084   GtkWidget *button;
4085   gint x, y;
4086
4087   /* Sanity Check */
4088   if ((column == NULL) ||
4089       (event->window != tree_view->priv->drag_window))
4090     return FALSE;
4091
4092   button = gtk_tree_view_column_get_button (column);
4093
4094   /* Handle moving the header */
4095   gdk_window_get_position (tree_view->priv->drag_window, &x, &y);
4096   gtk_widget_get_allocation (widget, &allocation);
4097   gtk_widget_get_allocation (button, &button_allocation);
4098   x = CLAMP (x + (gint)event->x - _gtk_tree_view_column_get_drag_x (column), 0,
4099              MAX (tree_view->priv->width, allocation.width) - button_allocation.width);
4100   gdk_window_move (tree_view->priv->drag_window, x, y);
4101
4102   /* autoscroll, if needed */
4103   gtk_tree_view_horizontal_autoscroll (tree_view, (GdkEvent *) event);
4104   /* Update the current reorder position and arrow; */
4105   gtk_tree_view_update_current_reorder (tree_view, (GdkEvent *) event);
4106
4107   return TRUE;
4108 }
4109
4110 static void
4111 gtk_tree_view_stop_rubber_band (GtkTreeView *tree_view)
4112 {
4113   remove_scroll_timeout (tree_view);
4114   gtk_grab_remove (GTK_WIDGET (tree_view));
4115
4116   if (tree_view->priv->rubber_band_status == RUBBER_BAND_ACTIVE)
4117     {
4118       GtkTreePath *tmp_path;
4119
4120       gtk_widget_queue_draw (GTK_WIDGET (tree_view));
4121
4122       /* The anchor path should be set to the start path */
4123       tmp_path = _gtk_tree_view_find_path (tree_view,
4124                                            tree_view->priv->rubber_band_start_tree,
4125                                            tree_view->priv->rubber_band_start_node);
4126
4127       if (tree_view->priv->anchor)
4128         gtk_tree_row_reference_free (tree_view->priv->anchor);
4129
4130       tree_view->priv->anchor =
4131         gtk_tree_row_reference_new_proxy (G_OBJECT (tree_view),
4132                                           tree_view->priv->model,
4133                                           tmp_path);
4134
4135       gtk_tree_path_free (tmp_path);
4136
4137       /* ... and the cursor to the end path */
4138       tmp_path = _gtk_tree_view_find_path (tree_view,
4139                                            tree_view->priv->rubber_band_end_tree,
4140                                            tree_view->priv->rubber_band_end_node);
4141       gtk_tree_view_real_set_cursor (GTK_TREE_VIEW (tree_view), tmp_path, FALSE, FALSE);
4142       gtk_tree_path_free (tmp_path);
4143
4144       _gtk_tree_selection_emit_changed (tree_view->priv->selection);
4145     }
4146
4147   /* Clear status variables */
4148   tree_view->priv->rubber_band_status = RUBBER_BAND_OFF;
4149   tree_view->priv->rubber_band_extend = FALSE;
4150   tree_view->priv->rubber_band_modify = FALSE;
4151
4152   tree_view->priv->rubber_band_start_node = NULL;
4153   tree_view->priv->rubber_band_start_tree = NULL;
4154   tree_view->priv->rubber_band_end_node = NULL;
4155   tree_view->priv->rubber_band_end_tree = NULL;
4156 }
4157
4158 static void
4159 gtk_tree_view_update_rubber_band_selection_range (GtkTreeView *tree_view,
4160                                                  GtkRBTree   *start_tree,
4161                                                  GtkRBNode   *start_node,
4162                                                  GtkRBTree   *end_tree,
4163                                                  GtkRBNode   *end_node,
4164                                                  gboolean     select,
4165                                                  gboolean     skip_start,
4166                                                  gboolean     skip_end)
4167 {
4168   if (start_node == end_node)
4169     return;
4170
4171   /* We skip the first node and jump inside the loop */
4172   if (skip_start)
4173     goto skip_first;
4174
4175   do
4176     {
4177       /* Small optimization by assuming insensitive nodes are never
4178        * selected.
4179        */
4180       if (!GTK_RBNODE_FLAG_SET (start_node, GTK_RBNODE_IS_SELECTED))
4181         {
4182           GtkTreePath *path;
4183           gboolean selectable;
4184
4185           path = _gtk_tree_view_find_path (tree_view, start_tree, start_node);
4186           selectable = _gtk_tree_selection_row_is_selectable (tree_view->priv->selection, start_node, path);
4187           gtk_tree_path_free (path);
4188
4189           if (!selectable)
4190             goto node_not_selectable;
4191         }
4192
4193       if (select)
4194         {
4195           if (tree_view->priv->rubber_band_extend)
4196             GTK_RBNODE_SET_FLAG (start_node, GTK_RBNODE_IS_SELECTED);
4197           else if (tree_view->priv->rubber_band_modify)
4198             {
4199               /* Toggle the selection state */
4200               if (GTK_RBNODE_FLAG_SET (start_node, GTK_RBNODE_IS_SELECTED))
4201                 GTK_RBNODE_UNSET_FLAG (start_node, GTK_RBNODE_IS_SELECTED);
4202               else
4203                 GTK_RBNODE_SET_FLAG (start_node, GTK_RBNODE_IS_SELECTED);
4204             }
4205           else
4206             GTK_RBNODE_SET_FLAG (start_node, GTK_RBNODE_IS_SELECTED);
4207         }
4208       else
4209         {
4210           /* Mirror the above */
4211           if (tree_view->priv->rubber_band_extend)
4212             GTK_RBNODE_UNSET_FLAG (start_node, GTK_RBNODE_IS_SELECTED);
4213           else if (tree_view->priv->rubber_band_modify)
4214             {
4215               /* Toggle the selection state */
4216               if (GTK_RBNODE_FLAG_SET (start_node, GTK_RBNODE_IS_SELECTED))
4217                 GTK_RBNODE_UNSET_FLAG (start_node, GTK_RBNODE_IS_SELECTED);
4218               else
4219                 GTK_RBNODE_SET_FLAG (start_node, GTK_RBNODE_IS_SELECTED);
4220             }
4221           else
4222             GTK_RBNODE_UNSET_FLAG (start_node, GTK_RBNODE_IS_SELECTED);
4223         }
4224
4225       _gtk_tree_view_queue_draw_node (tree_view, start_tree, start_node, NULL);
4226
4227 node_not_selectable:
4228       if (start_node == end_node)
4229         break;
4230
4231 skip_first:
4232
4233       if (start_node->children)
4234         {
4235           start_tree = start_node->children;
4236           start_node = start_tree->root;
4237           while (start_node->left != start_tree->nil)
4238             start_node = start_node->left;
4239         }
4240       else
4241         {
4242           _gtk_rbtree_next_full (start_tree, start_node, &start_tree, &start_node);
4243
4244           if (!start_tree)
4245             /* Ran out of tree */
4246             break;
4247         }
4248
4249       if (skip_end && start_node == end_node)
4250         break;
4251     }
4252   while (TRUE);
4253 }
4254
4255 static void
4256 gtk_tree_view_update_rubber_band_selection (GtkTreeView *tree_view)
4257 {
4258   GtkRBTree *start_tree, *end_tree;
4259   GtkRBNode *start_node, *end_node;
4260
4261   _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);
4262   _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);
4263
4264   /* Handle the start area first */
4265   if (!tree_view->priv->rubber_band_start_node)
4266     {
4267       gtk_tree_view_update_rubber_band_selection_range (tree_view,
4268                                                        start_tree,
4269                                                        start_node,
4270                                                        end_tree,
4271                                                        end_node,
4272                                                        TRUE,
4273                                                        FALSE,
4274                                                        FALSE);
4275     }
4276   else if (_gtk_rbtree_node_find_offset (start_tree, start_node) <
4277            _gtk_rbtree_node_find_offset (tree_view->priv->rubber_band_start_tree, tree_view->priv->rubber_band_start_node))
4278     {
4279       /* New node is above the old one; selection became bigger */
4280       gtk_tree_view_update_rubber_band_selection_range (tree_view,
4281                                                        start_tree,
4282                                                        start_node,
4283                                                        tree_view->priv->rubber_band_start_tree,
4284                                                        tree_view->priv->rubber_band_start_node,
4285                                                        TRUE,
4286                                                        FALSE,
4287                                                        TRUE);
4288     }
4289   else if (_gtk_rbtree_node_find_offset (start_tree, start_node) >
4290            _gtk_rbtree_node_find_offset (tree_view->priv->rubber_band_start_tree, tree_view->priv->rubber_band_start_node))
4291     {
4292       /* New node is below the old one; selection became smaller */
4293       gtk_tree_view_update_rubber_band_selection_range (tree_view,
4294                                                        tree_view->priv->rubber_band_start_tree,
4295                                                        tree_view->priv->rubber_band_start_node,
4296                                                        start_tree,
4297                                                        start_node,
4298                                                        FALSE,
4299                                                        FALSE,
4300                                                        TRUE);
4301     }
4302
4303   tree_view->priv->rubber_band_start_tree = start_tree;
4304   tree_view->priv->rubber_band_start_node = start_node;
4305
4306   /* Next, handle the end area */
4307   if (!tree_view->priv->rubber_band_end_node)
4308     {
4309       /* In the event this happens, start_node was also NULL; this case is
4310        * handled above.
4311        */
4312     }
4313   else if (!end_node)
4314     {
4315       /* Find the last node in the tree */
4316       _gtk_rbtree_find_offset (tree_view->priv->tree, tree_view->priv->height - 1,
4317                                &end_tree, &end_node);
4318
4319       /* Selection reached end of the tree */
4320       gtk_tree_view_update_rubber_band_selection_range (tree_view,
4321                                                        tree_view->priv->rubber_band_end_tree,
4322                                                        tree_view->priv->rubber_band_end_node,
4323                                                        end_tree,
4324                                                        end_node,
4325                                                        TRUE,
4326                                                        TRUE,
4327                                                        FALSE);
4328     }
4329   else if (_gtk_rbtree_node_find_offset (end_tree, end_node) >
4330            _gtk_rbtree_node_find_offset (tree_view->priv->rubber_band_end_tree, tree_view->priv->rubber_band_end_node))
4331     {
4332       /* New node is below the old one; selection became bigger */
4333       gtk_tree_view_update_rubber_band_selection_range (tree_view,
4334                                                        tree_view->priv->rubber_band_end_tree,
4335                                                        tree_view->priv->rubber_band_end_node,
4336                                                        end_tree,
4337                                                        end_node,
4338                                                        TRUE,
4339                                                        TRUE,
4340                                                        FALSE);
4341     }
4342   else if (_gtk_rbtree_node_find_offset (end_tree, end_node) <
4343            _gtk_rbtree_node_find_offset (tree_view->priv->rubber_band_end_tree, tree_view->priv->rubber_band_end_node))
4344     {
4345       /* New node is above the old one; selection became smaller */
4346       gtk_tree_view_update_rubber_band_selection_range (tree_view,
4347                                                        end_tree,
4348                                                        end_node,
4349                                                        tree_view->priv->rubber_band_end_tree,
4350                                                        tree_view->priv->rubber_band_end_node,
4351                                                        FALSE,
4352                                                        TRUE,
4353                                                        FALSE);
4354     }
4355
4356   tree_view->priv->rubber_band_end_tree = end_tree;
4357   tree_view->priv->rubber_band_end_node = end_node;
4358 }
4359
4360 static void
4361 gtk_tree_view_update_rubber_band (GtkTreeView *tree_view)
4362 {
4363   gint x, y;
4364   GdkRectangle old_area;
4365   GdkRectangle new_area;
4366   GdkRectangle common;
4367   cairo_region_t *invalid_region;
4368
4369   old_area.x = MIN (tree_view->priv->press_start_x, tree_view->priv->rubber_band_x);
4370   old_area.y = MIN (tree_view->priv->press_start_y, tree_view->priv->rubber_band_y) - tree_view->priv->dy;
4371   old_area.width = ABS (tree_view->priv->rubber_band_x - tree_view->priv->press_start_x) + 1;
4372   old_area.height = ABS (tree_view->priv->rubber_band_y - tree_view->priv->press_start_y) + 1;
4373
4374   gdk_window_get_device_position (tree_view->priv->bin_window,
4375                                   gdk_device_manager_get_client_pointer (
4376                                     gdk_display_get_device_manager (
4377                                       gtk_widget_get_display (GTK_WIDGET (tree_view)))),
4378                                   &x, &y, NULL);
4379
4380   x = MAX (x, 0);
4381   y = MAX (y, 0) + tree_view->priv->dy;
4382
4383   new_area.x = MIN (tree_view->priv->press_start_x, x);
4384   new_area.y = MIN (tree_view->priv->press_start_y, y) - tree_view->priv->dy;
4385   new_area.width = ABS (x - tree_view->priv->press_start_x) + 1;
4386   new_area.height = ABS (y - tree_view->priv->press_start_y) + 1;
4387
4388   invalid_region = cairo_region_create_rectangle (&old_area);
4389   cairo_region_union_rectangle (invalid_region, &new_area);
4390
4391   gdk_rectangle_intersect (&old_area, &new_area, &common);
4392   if (common.width > 2 && common.height > 2)
4393     {
4394       cairo_region_t *common_region;
4395
4396       /* make sure the border is invalidated */
4397       common.x += 1;
4398       common.y += 1;
4399       common.width -= 2;
4400       common.height -= 2;
4401
4402       common_region = cairo_region_create_rectangle (&common);
4403
4404       cairo_region_subtract (invalid_region, common_region);
4405       cairo_region_destroy (common_region);
4406     }
4407
4408   gdk_window_invalidate_region (tree_view->priv->bin_window, invalid_region, TRUE);
4409
4410   cairo_region_destroy (invalid_region);
4411
4412   tree_view->priv->rubber_band_x = x;
4413   tree_view->priv->rubber_band_y = y;
4414
4415   gtk_tree_view_update_rubber_band_selection (tree_view);
4416 }
4417
4418 static void
4419 gtk_tree_view_paint_rubber_band (GtkTreeView  *tree_view,
4420                                  cairo_t      *cr)
4421 {
4422   GdkRectangle rect;
4423   GtkStyleContext *context;
4424
4425   cairo_save (cr);
4426
4427   context = gtk_widget_get_style_context (GTK_WIDGET (tree_view));
4428
4429   gtk_style_context_save (context);
4430   gtk_style_context_add_class (context, GTK_STYLE_CLASS_RUBBERBAND);
4431
4432   rect.x = MIN (tree_view->priv->press_start_x, tree_view->priv->rubber_band_x);
4433   rect.y = MIN (tree_view->priv->press_start_y, tree_view->priv->rubber_band_y) - tree_view->priv->dy;
4434   rect.width = ABS (tree_view->priv->press_start_x - tree_view->priv->rubber_band_x) + 1;
4435   rect.height = ABS (tree_view->priv->press_start_y - tree_view->priv->rubber_band_y) + 1;
4436
4437   gdk_cairo_rectangle (cr, &rect);
4438   cairo_clip (cr);
4439
4440   gtk_render_background (context, cr,
4441                          rect.x, rect.y,
4442                          rect.width, rect.height);
4443   gtk_render_frame (context, cr,
4444                     rect.x, rect.y,
4445                     rect.width, rect.height);
4446
4447   gtk_style_context_restore (context);
4448   cairo_restore (cr);
4449 }
4450
4451 static gboolean
4452 gtk_tree_view_motion_bin_window (GtkWidget      *widget,
4453                                  GdkEventMotion *event)
4454 {
4455   GtkTreeView *tree_view;
4456   GtkRBTree *tree;
4457   GtkRBNode *node;
4458   gint new_y;
4459
4460   tree_view = (GtkTreeView *) widget;
4461
4462   if (tree_view->priv->tree == NULL)
4463     return FALSE;
4464
4465   if (tree_view->priv->rubber_band_status == RUBBER_BAND_MAYBE_START)
4466     {
4467       gtk_grab_add (GTK_WIDGET (tree_view));
4468       gtk_tree_view_update_rubber_band (tree_view);
4469
4470       tree_view->priv->rubber_band_status = RUBBER_BAND_ACTIVE;
4471     }
4472   else if (tree_view->priv->rubber_band_status == RUBBER_BAND_ACTIVE)
4473     {
4474       gtk_tree_view_update_rubber_band (tree_view);
4475
4476       add_scroll_timeout (tree_view);
4477     }
4478
4479   /* only check for an initiated drag when a button is pressed */
4480   if (tree_view->priv->pressed_button >= 0
4481       && !tree_view->priv->rubber_band_status)
4482     gtk_tree_view_maybe_begin_dragging_row (tree_view, event);
4483
4484   new_y = TREE_WINDOW_Y_TO_RBTREE_Y(tree_view, event->y);
4485   if (new_y < 0)
4486     new_y = 0;
4487
4488   _gtk_rbtree_find_offset (tree_view->priv->tree, new_y, &tree, &node);
4489
4490   /* If we are currently pressing down a button, we don't want to prelight anything else. */
4491   if ((tree_view->priv->button_pressed_node != NULL) &&
4492       (tree_view->priv->button_pressed_node != node))
4493     node = NULL;
4494
4495   tree_view->priv->event_last_x = event->x;
4496   tree_view->priv->event_last_y = event->y;
4497
4498   prelight_or_select (tree_view, tree, node, event->x, event->y);
4499
4500   return TRUE;
4501 }
4502
4503 static gboolean
4504 gtk_tree_view_motion (GtkWidget      *widget,
4505                       GdkEventMotion *event)
4506 {
4507   GtkTreeView *tree_view;
4508
4509   tree_view = (GtkTreeView *) widget;
4510
4511   /* Resizing a column */
4512   if (tree_view->priv->in_column_resize)
4513     return gtk_tree_view_motion_resize_column (widget, event);
4514
4515   /* Drag column */
4516   if (tree_view->priv->in_column_drag)
4517     return gtk_tree_view_motion_drag_column (widget, event);
4518
4519   /* Sanity check it */
4520   if (event->window == tree_view->priv->bin_window)
4521     return gtk_tree_view_motion_bin_window (widget, event);
4522
4523   return FALSE;
4524 }
4525
4526 /* Invalidate the focus rectangle near the edge of the bin_window; used when
4527  * the tree is empty.
4528  */
4529 static void
4530 invalidate_empty_focus (GtkTreeView *tree_view)
4531 {
4532   GdkRectangle area;
4533
4534   if (!gtk_widget_has_focus (GTK_WIDGET (tree_view)))
4535     return;
4536
4537   area.x = 0;
4538   area.y = 0;
4539   area.width = gdk_window_get_width (tree_view->priv->bin_window);
4540   area.height = gdk_window_get_height (tree_view->priv->bin_window);
4541   gdk_window_invalidate_rect (tree_view->priv->bin_window, &area, FALSE);
4542 }
4543
4544 /* Draws a focus rectangle near the edge of the bin_window; used when the tree
4545  * is empty.
4546  */
4547 static void
4548 draw_empty_focus (GtkTreeView *tree_view, cairo_t *cr)
4549 {
4550   GtkWidget *widget = GTK_WIDGET (tree_view);
4551   gint w, h;
4552
4553   if (!gtk_widget_has_visible_focus (widget))
4554     return;
4555
4556   w = gdk_window_get_width (tree_view->priv->bin_window) - 2;
4557   h = gdk_window_get_height (tree_view->priv->bin_window) - 2;
4558
4559   if (w > 0 && h > 0)
4560     {
4561       GtkStyleContext *context;
4562       GtkStateFlags state;
4563
4564       context = gtk_widget_get_style_context (widget);
4565       state = gtk_widget_get_state_flags (widget);
4566
4567       gtk_style_context_save (context);
4568       gtk_style_context_set_state (context, state);
4569
4570       gtk_render_focus (context, cr, 1, 1, w, h);
4571
4572       gtk_style_context_restore (context);
4573     }
4574 }
4575
4576 typedef enum {
4577   GTK_TREE_VIEW_GRID_LINE,
4578   GTK_TREE_VIEW_TREE_LINE,
4579   GTK_TREE_VIEW_FOREGROUND_LINE
4580 } GtkTreeViewLineType;
4581
4582 static void
4583 gtk_tree_view_draw_line (GtkTreeView         *tree_view,
4584                          cairo_t             *cr,
4585                          GtkTreeViewLineType  type,
4586                          int                  x1,
4587                          int                  y1,
4588                          int                  x2,
4589                          int                  y2)
4590 {
4591   cairo_save (cr);
4592
4593   switch (type)
4594     {
4595     case GTK_TREE_VIEW_TREE_LINE:
4596       cairo_set_source_rgb (cr, 0, 0, 0);
4597       cairo_set_line_width (cr, tree_view->priv->tree_line_width);
4598       if (tree_view->priv->tree_line_dashes[0])
4599         cairo_set_dash (cr,
4600                         tree_view->priv->tree_line_dashes,
4601                         2, 0.5);
4602       break;
4603     case GTK_TREE_VIEW_GRID_LINE:
4604       cairo_set_source_rgb (cr, 0, 0, 0);
4605       cairo_set_line_width (cr, tree_view->priv->grid_line_width);
4606       if (tree_view->priv->grid_line_dashes[0])
4607         cairo_set_dash (cr,
4608                         tree_view->priv->grid_line_dashes,
4609                         2, 0.5);
4610       break;
4611     default:
4612       g_assert_not_reached ();
4613       /* fall through */
4614     case GTK_TREE_VIEW_FOREGROUND_LINE:
4615       {
4616         GtkStyleContext *context;
4617         GtkStateFlags state;
4618         GdkRGBA color;
4619
4620         context = gtk_widget_get_style_context (GTK_WIDGET (tree_view));
4621         state = gtk_widget_get_state_flags (GTK_WIDGET (tree_view));
4622
4623         cairo_set_line_width (cr, 1.0);
4624         gtk_style_context_get_color (context, state, &color);
4625         gdk_cairo_set_source_rgba (cr, &color);
4626       }
4627
4628       break;
4629     }
4630
4631   cairo_move_to (cr, x1 + 0.5, y1 + 0.5);
4632   cairo_line_to (cr, x2 + 0.5, y2 + 0.5);
4633   cairo_stroke (cr);
4634
4635   cairo_restore (cr);
4636 }
4637
4638 static void
4639 gtk_tree_view_draw_grid_lines (GtkTreeView    *tree_view,
4640                                cairo_t        *cr,
4641                                gint            n_visible_columns)
4642 {
4643   GList *list = tree_view->priv->columns;
4644   gint i = 0;
4645   gint current_x = 0;
4646
4647   if (tree_view->priv->grid_lines != GTK_TREE_VIEW_GRID_LINES_VERTICAL
4648       && tree_view->priv->grid_lines != GTK_TREE_VIEW_GRID_LINES_BOTH)
4649     return;
4650
4651   /* Only draw the lines for visible rows and columns */
4652   for (list = tree_view->priv->columns; list; list = list->next, i++)
4653     {
4654       GtkTreeViewColumn *column = list->data;
4655
4656       /* We don't want a line for the last column */
4657       if (i == n_visible_columns - 1)
4658         break;
4659
4660       if (!gtk_tree_view_column_get_visible (column))
4661         continue;
4662
4663       current_x += gtk_tree_view_column_get_width (column);
4664
4665       gtk_tree_view_draw_line (tree_view, cr,
4666                                GTK_TREE_VIEW_GRID_LINE,
4667                                current_x - 1, 0,
4668                                current_x - 1, tree_view->priv->height);
4669     }
4670 }
4671
4672 /* Warning: Very scary function.
4673  * Modify at your own risk
4674  *
4675  * KEEP IN SYNC WITH gtk_tree_view_create_row_drag_icon()!
4676  * FIXME: It's not...
4677  */
4678 static gboolean
4679 gtk_tree_view_bin_draw (GtkWidget      *widget,
4680                         cairo_t        *cr)
4681 {
4682   GtkTreeView *tree_view = GTK_TREE_VIEW (widget);
4683   GtkTreePath *path;
4684   GtkRBTree *tree;
4685   GList *list;
4686   GtkRBNode *node;
4687   GtkRBNode *cursor = NULL;
4688   GtkRBTree *cursor_tree = NULL;
4689   GtkRBNode *drag_highlight = NULL;
4690   GtkRBTree *drag_highlight_tree = NULL;
4691   GtkTreeIter iter;
4692   gint new_y;
4693   gint y_offset, cell_offset;
4694   gint max_height;
4695   gint depth;
4696   GdkRectangle background_area;
4697   GdkRectangle cell_area;
4698   GdkRectangle clip;
4699   guint flags;
4700   gint highlight_x;
4701   gint expander_cell_width;
4702   gint bin_window_width;
4703   gint bin_window_height;
4704   GtkTreePath *cursor_path;
4705   GtkTreePath *drag_dest_path;
4706   GList *first_column, *last_column;
4707   gint vertical_separator;
4708   gint horizontal_separator;
4709   gint focus_line_width;
4710   gboolean allow_rules;
4711   gboolean has_can_focus_cell;
4712   gboolean rtl;
4713   gint n_visible_columns;
4714   gint grid_line_width;
4715   gboolean draw_vgrid_lines, draw_hgrid_lines;
4716   GtkStyleContext *context;
4717   GtkStateFlags state;
4718   gboolean parity;
4719
4720   rtl = (gtk_widget_get_direction (widget) == GTK_TEXT_DIR_RTL);
4721   context = gtk_widget_get_style_context (widget);
4722   state = gtk_widget_get_state_flags (widget);
4723
4724   gtk_widget_style_get (widget,
4725                         "horizontal-separator", &horizontal_separator,
4726                         "vertical-separator", &vertical_separator,
4727                         "allow-rules", &allow_rules,
4728                         "focus-line-width", &focus_line_width,
4729                         NULL);
4730
4731   if (tree_view->priv->tree == NULL)
4732     {
4733       draw_empty_focus (tree_view, cr);
4734       return TRUE;
4735     }
4736
4737   bin_window_width = gdk_window_get_width (tree_view->priv->bin_window);
4738   bin_window_height = gdk_window_get_height (tree_view->priv->bin_window);
4739   cairo_rectangle (cr, 0, 0, bin_window_width, bin_window_height);
4740   cairo_clip (cr);
4741   if (!gdk_cairo_get_clip_rectangle (cr, &clip))
4742     return TRUE;
4743
4744   new_y = TREE_WINDOW_Y_TO_RBTREE_Y (tree_view, clip.y);
4745
4746   if (new_y < 0)
4747     new_y = 0;
4748   y_offset = -_gtk_rbtree_find_offset (tree_view->priv->tree, new_y, &tree, &node);
4749
4750   if (tree_view->priv->height < bin_window_height)
4751     {
4752       gtk_style_context_save (context);
4753       gtk_style_context_set_state (context, state);
4754       gtk_style_context_add_class (context, GTK_STYLE_CLASS_CELL);
4755
4756       gtk_render_background (context, cr,
4757                              0, tree_view->priv->height,
4758                              bin_window_width,
4759                              bin_window_height - tree_view->priv->height);
4760
4761       gtk_style_context_restore (context);
4762     }
4763
4764   if (node == NULL)
4765     return TRUE;
4766
4767   /* find the path for the node */
4768   path = _gtk_tree_view_find_path ((GtkTreeView *)widget,
4769                                    tree,
4770                                    node);
4771   gtk_tree_model_get_iter (tree_view->priv->model,
4772                            &iter,
4773                            path);
4774   depth = gtk_tree_path_get_depth (path);
4775   gtk_tree_path_free (path);
4776
4777   cursor_path = NULL;
4778   drag_dest_path = NULL;
4779
4780   if (tree_view->priv->cursor)
4781     cursor_path = gtk_tree_row_reference_get_path (tree_view->priv->cursor);
4782
4783   if (cursor_path)
4784     _gtk_tree_view_find_node (tree_view, cursor_path,
4785                               &cursor_tree, &cursor);
4786
4787   if (tree_view->priv->drag_dest_row)
4788     drag_dest_path = gtk_tree_row_reference_get_path (tree_view->priv->drag_dest_row);
4789
4790   if (drag_dest_path)
4791     _gtk_tree_view_find_node (tree_view, drag_dest_path,
4792                               &drag_highlight_tree, &drag_highlight);
4793
4794   draw_vgrid_lines =
4795     tree_view->priv->grid_lines == GTK_TREE_VIEW_GRID_LINES_VERTICAL
4796     || tree_view->priv->grid_lines == GTK_TREE_VIEW_GRID_LINES_BOTH;
4797   draw_hgrid_lines =
4798     tree_view->priv->grid_lines == GTK_TREE_VIEW_GRID_LINES_HORIZONTAL
4799     || tree_view->priv->grid_lines == GTK_TREE_VIEW_GRID_LINES_BOTH;
4800
4801   if (draw_vgrid_lines || draw_hgrid_lines)
4802     gtk_widget_style_get (widget, "grid-line-width", &grid_line_width, NULL);
4803
4804   n_visible_columns = 0;
4805   for (list = tree_view->priv->columns; list; list = list->next)
4806     {
4807       if (!gtk_tree_view_column_get_visible (GTK_TREE_VIEW_COLUMN (list->data)))
4808         continue;
4809       n_visible_columns ++;
4810     }
4811
4812   /* Find the last column */
4813   for (last_column = g_list_last (tree_view->priv->columns);
4814        last_column &&
4815        !(gtk_tree_view_column_get_visible (GTK_TREE_VIEW_COLUMN (last_column->data)));
4816        last_column = last_column->prev)
4817     ;
4818
4819   /* and the first */
4820   for (first_column = g_list_first (tree_view->priv->columns);
4821        first_column &&
4822        !(gtk_tree_view_column_get_visible (GTK_TREE_VIEW_COLUMN (first_column->data)));
4823        first_column = first_column->next)
4824     ;
4825
4826   /* Actually process the expose event.  To do this, we want to
4827    * start at the first node of the event, and walk the tree in
4828    * order, drawing each successive node.
4829    */
4830
4831   parity = !(_gtk_rbtree_node_get_index (tree, node) % 2);
4832
4833   do
4834     {
4835       gboolean is_separator = FALSE;
4836       gboolean is_first = FALSE;
4837       gboolean is_last = FALSE;
4838       gint n_col = 0;
4839
4840       parity = !parity;
4841       is_separator = row_is_separator (tree_view, &iter, NULL);
4842
4843       max_height = gtk_tree_view_get_row_height (tree_view, node);
4844
4845       cell_offset = 0;
4846       highlight_x = 0; /* should match x coord of first cell */
4847       expander_cell_width = 0;
4848
4849       background_area.y = y_offset + clip.y;
4850       background_area.height = max_height;
4851
4852       flags = 0;
4853
4854       if (GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_PRELIT))
4855         flags |= GTK_CELL_RENDERER_PRELIT;
4856
4857       if (GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_SELECTED))
4858         flags |= GTK_CELL_RENDERER_SELECTED;
4859
4860       /* we *need* to set cell data on all cells before the call
4861        * to _has_can_focus_cell, else _has_can_focus_cell() does not
4862        * return a correct value.
4863        */
4864       for (list = (rtl ? g_list_last (tree_view->priv->columns) : g_list_first (tree_view->priv->columns));
4865            list;
4866            list = (rtl ? list->prev : list->next))
4867         {
4868           GtkTreeViewColumn *column = list->data;
4869           gtk_tree_view_column_cell_set_cell_data (column,
4870                                                    tree_view->priv->model,
4871                                                    &iter,
4872                                                    GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_PARENT),
4873                                                    node->children?TRUE:FALSE);
4874         }
4875
4876       has_can_focus_cell = gtk_tree_view_has_can_focus_cell (tree_view);
4877
4878       for (list = (rtl ? g_list_last (tree_view->priv->columns) : g_list_first (tree_view->priv->columns));
4879            list;
4880            list = (rtl ? list->prev : list->next))
4881         {
4882           GtkTreeViewColumn *column = list->data;
4883           GtkRegionFlags row_flags = 0, column_flags = 0;
4884           GtkStateFlags state = 0;
4885           gint width;
4886           gboolean draw_focus;
4887
4888           if (!gtk_tree_view_column_get_visible (column))
4889             continue;
4890
4891           n_col++;
4892           width = gtk_tree_view_column_get_width (column);
4893
4894           if (cell_offset > clip.x + clip.width ||
4895               cell_offset + width < clip.x)
4896             {
4897               cell_offset += width;
4898               continue;
4899             }
4900
4901           if (gtk_tree_view_column_get_sort_indicator (column))
4902             flags |= GTK_CELL_RENDERER_SORTED;
4903           else
4904             flags &= ~GTK_CELL_RENDERER_SORTED;
4905
4906           if (cursor == node)
4907             flags |= GTK_CELL_RENDERER_FOCUSED;
4908           else
4909             flags &= ~GTK_CELL_RENDERER_FOCUSED;
4910
4911           background_area.x = cell_offset;
4912           background_area.width = width;
4913
4914           cell_area = background_area;
4915           cell_area.y += vertical_separator / 2;
4916           cell_area.x += horizontal_separator / 2;
4917           cell_area.height -= vertical_separator;
4918           cell_area.width -= horizontal_separator;
4919
4920           if (draw_vgrid_lines)
4921             {
4922               if (list == first_column)
4923                 {
4924                   cell_area.width -= grid_line_width / 2;
4925                 }
4926               else if (list == last_column)
4927                 {
4928                   cell_area.x += grid_line_width / 2;
4929                   cell_area.width -= grid_line_width / 2;
4930                 }
4931               else
4932                 {
4933                   cell_area.x += grid_line_width / 2;
4934                   cell_area.width -= grid_line_width;
4935                 }
4936             }
4937
4938           if (draw_hgrid_lines)
4939             {
4940               cell_area.y += grid_line_width / 2;
4941               cell_area.height -= grid_line_width;
4942             }
4943
4944           if (!gdk_rectangle_intersect (&clip, &background_area, NULL))
4945             {
4946               cell_offset += gtk_tree_view_column_get_width (column);
4947               continue;
4948             }
4949
4950           gtk_tree_view_column_cell_set_cell_data (column,
4951                                                    tree_view->priv->model,
4952                                                    &iter,
4953                                                    GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_PARENT),
4954                                                    node->children?TRUE:FALSE);
4955
4956           /* Select the detail for drawing the cell.  relevant
4957            * factors are parity, sortedness, and whether to
4958            * display rules.
4959            */
4960           if (allow_rules && tree_view->priv->has_rules)
4961             {
4962               if (parity)
4963                 row_flags |= GTK_REGION_ODD;
4964               else
4965                 row_flags |= GTK_REGION_EVEN;
4966             }
4967
4968           if ((flags & GTK_CELL_RENDERER_SORTED) &&
4969               n_visible_columns >= 3)
4970             column_flags |= GTK_REGION_SORTED;
4971
4972           is_first = (rtl ? !list->next : !list->prev);
4973           is_last = (rtl ? !list->prev : !list->next);
4974
4975           if (is_first)
4976             column_flags |= GTK_REGION_FIRST;
4977
4978           if (is_last)
4979             column_flags |= GTK_REGION_LAST;
4980
4981           if ((n_col % 2) == 0)
4982             column_flags |= GTK_REGION_EVEN;
4983           else
4984             column_flags |= GTK_REGION_ODD;
4985
4986           gtk_style_context_save (context);
4987
4988           state = gtk_cell_renderer_get_state (NULL, widget, flags);
4989           gtk_style_context_set_state (context, state);
4990
4991           gtk_style_context_add_class (context, GTK_STYLE_CLASS_CELL);
4992           gtk_style_context_add_region (context, GTK_STYLE_REGION_ROW, row_flags);
4993           gtk_style_context_add_region (context, GTK_STYLE_REGION_COLUMN, column_flags);
4994
4995           if (node == cursor && has_can_focus_cell
4996               && ((column == tree_view->priv->focus_column
4997                    && tree_view->priv->draw_keyfocus &&
4998                    gtk_widget_has_visible_focus (widget))
4999                   || (column == tree_view->priv->edited_column)))
5000             draw_focus = TRUE;
5001           else
5002             draw_focus = FALSE;
5003
5004           /* Draw background */
5005           gtk_render_background (context, cr,
5006                                  background_area.x,
5007                                  background_area.y,
5008                                  background_area.width,
5009                                  background_area.height);
5010
5011           /* Draw frame */
5012           gtk_render_frame (context, cr,
5013                             background_area.x,
5014                             background_area.y,
5015                             background_area.width,
5016                             background_area.height);
5017
5018           if (gtk_tree_view_is_expander_column (tree_view, column))
5019             {
5020               if (!rtl)
5021                 cell_area.x += (depth - 1) * tree_view->priv->level_indentation;
5022               cell_area.width -= (depth - 1) * tree_view->priv->level_indentation;
5023
5024               if (gtk_tree_view_draw_expanders (tree_view))
5025                 {
5026                   if (!rtl)
5027                     cell_area.x += depth * tree_view->priv->expander_size;
5028                   cell_area.width -= depth * tree_view->priv->expander_size;
5029                 }
5030
5031               /* If we have an expander column, the highlight underline
5032                * starts with that column, so that it indicates which
5033                * level of the tree we're dropping at.
5034                */
5035               highlight_x = cell_area.x;
5036               expander_cell_width = cell_area.width;
5037
5038               if (is_separator)
5039                 {
5040                   gtk_style_context_save (context);
5041                   gtk_style_context_add_class (context, GTK_STYLE_CLASS_SEPARATOR);
5042
5043                   gtk_render_line (context, cr,
5044                                    cell_area.x,
5045                                    cell_area.y + cell_area.height / 2,
5046                                    cell_area.x + cell_area.width,
5047                                    cell_area.y + cell_area.height / 2);
5048
5049                   gtk_style_context_restore (context);
5050                 }
5051               else
5052                 {
5053                   _gtk_tree_view_column_cell_render (column,
5054                                                      cr,
5055                                                      &background_area,
5056                                                      &cell_area,
5057                                                      flags,
5058                                                      draw_focus);
5059                 }
5060
5061               if (gtk_tree_view_draw_expanders (tree_view)
5062                   && (node->flags & GTK_RBNODE_IS_PARENT) == GTK_RBNODE_IS_PARENT)
5063                 {
5064                   gtk_tree_view_draw_arrow (GTK_TREE_VIEW (widget),
5065                                             cr,
5066                                             tree,
5067                                             node);
5068                 }
5069             }
5070           else
5071             {
5072               if (is_separator)
5073                 {
5074                   gtk_style_context_save (context);
5075                   gtk_style_context_add_class (context, GTK_STYLE_CLASS_SEPARATOR);
5076
5077                   gtk_render_line (context, cr,
5078                                    cell_area.x,
5079                                    cell_area.y + cell_area.height / 2,
5080                                    cell_area.x + cell_area.width,
5081                                    cell_area.y + cell_area.height / 2);
5082
5083                   gtk_style_context_restore (context);
5084                 }
5085               else
5086                 _gtk_tree_view_column_cell_render (column,
5087                                                    cr,
5088                                                    &background_area,
5089                                                    &cell_area,
5090                                                    flags,
5091                                                    draw_focus);
5092             }
5093
5094           if (draw_hgrid_lines)
5095             {
5096               if (background_area.y > 0)
5097                 gtk_tree_view_draw_line (tree_view, cr,
5098                                          GTK_TREE_VIEW_GRID_LINE,
5099                                          background_area.x, background_area.y,
5100                                          background_area.x + background_area.width,
5101                                          background_area.y);
5102
5103               if (y_offset + max_height >= clip.height)
5104                 gtk_tree_view_draw_line (tree_view, cr,
5105                                          GTK_TREE_VIEW_GRID_LINE,
5106                                          background_area.x, background_area.y + max_height,
5107                                          background_area.x + background_area.width,
5108                                          background_area.y + max_height);
5109             }
5110
5111           if (gtk_tree_view_is_expander_column (tree_view, column) &&
5112               tree_view->priv->tree_lines_enabled)
5113             {
5114               gint x = background_area.x;
5115               gint mult = rtl ? -1 : 1;
5116               gint y0 = background_area.y;
5117               gint y1 = background_area.y + background_area.height/2;
5118               gint y2 = background_area.y + background_area.height;
5119
5120               if (rtl)
5121                 x += background_area.width - 1;
5122
5123               if ((node->flags & GTK_RBNODE_IS_PARENT) == GTK_RBNODE_IS_PARENT
5124                   && depth > 1)
5125                 {
5126                   gtk_tree_view_draw_line (tree_view, cr,
5127                                            GTK_TREE_VIEW_TREE_LINE,
5128                                            x + tree_view->priv->expander_size * (depth - 1.5) * mult,
5129                                            y1,
5130                                            x + tree_view->priv->expander_size * (depth - 1.1) * mult,
5131                                            y1);
5132                 }
5133               else if (depth > 1)
5134                 {
5135                   gtk_tree_view_draw_line (tree_view, cr,
5136                                            GTK_TREE_VIEW_TREE_LINE,
5137                                            x + tree_view->priv->expander_size * (depth - 1.5) * mult,
5138                                            y1,
5139                                            x + tree_view->priv->expander_size * (depth - 0.5) * mult,
5140                                            y1);
5141                 }
5142
5143               if (depth > 1)
5144                 {
5145                   gint i;
5146                   GtkRBNode *tmp_node;
5147                   GtkRBTree *tmp_tree;
5148
5149                   if (!_gtk_rbtree_next (tree, node))
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                                              y1);
5156                   else
5157                     gtk_tree_view_draw_line (tree_view, cr,
5158                                              GTK_TREE_VIEW_TREE_LINE,
5159                                              x + tree_view->priv->expander_size * (depth - 1.5) * mult,
5160                                              y0,
5161                                              x + tree_view->priv->expander_size * (depth - 1.5) * mult,
5162                                              y2);
5163
5164                   tmp_node = tree->parent_node;
5165                   tmp_tree = tree->parent_tree;
5166
5167                   for (i = depth - 2; i > 0; i--)
5168                     {
5169                       if (_gtk_rbtree_next (tmp_tree, tmp_node))
5170                         gtk_tree_view_draw_line (tree_view, cr,
5171                                                  GTK_TREE_VIEW_TREE_LINE,
5172                                                  x + tree_view->priv->expander_size * (i - 0.5) * mult,
5173                                                  y0,
5174                                                  x + tree_view->priv->expander_size * (i - 0.5) * mult,
5175                                                  y2);
5176
5177                       tmp_node = tmp_tree->parent_node;
5178                       tmp_tree = tmp_tree->parent_tree;
5179                     }
5180                 }
5181             }
5182
5183           gtk_style_context_restore (context);
5184           cell_offset += gtk_tree_view_column_get_width (column);
5185         }
5186
5187       if (node == drag_highlight)
5188         {
5189           /* Draw indicator for the drop
5190            */
5191           gint highlight_y = -1;
5192           GtkRBTree *tree = NULL;
5193           GtkRBNode *node = NULL;
5194
5195           switch (tree_view->priv->drag_dest_pos)
5196             {
5197             case GTK_TREE_VIEW_DROP_BEFORE:
5198               highlight_y = background_area.y - 1;
5199               if (highlight_y < 0)
5200                       highlight_y = 0;
5201               break;
5202
5203             case GTK_TREE_VIEW_DROP_AFTER:
5204               highlight_y = background_area.y + background_area.height - 1;
5205               break;
5206
5207             case GTK_TREE_VIEW_DROP_INTO_OR_BEFORE:
5208             case GTK_TREE_VIEW_DROP_INTO_OR_AFTER:
5209               _gtk_tree_view_find_node (tree_view, drag_dest_path, &tree, &node);
5210
5211               if (tree == NULL)
5212                 break;
5213
5214               gtk_render_focus (context, cr,
5215                                 0, gtk_tree_view_get_row_y_offset (tree_view, tree, node)
5216                                    - focus_line_width / 2,
5217                                 gdk_window_get_width (tree_view->priv->bin_window),
5218                                 gtk_tree_view_get_row_height (tree_view, node)
5219                                    - focus_line_width + 1);
5220               break;
5221             }
5222
5223           if (highlight_y >= 0)
5224             {
5225               gtk_tree_view_draw_line (tree_view, cr,
5226                                        GTK_TREE_VIEW_FOREGROUND_LINE,
5227                                        rtl ? highlight_x + expander_cell_width : highlight_x,
5228                                        highlight_y,
5229                                        rtl ? 0 : bin_window_width,
5230                                        highlight_y);
5231             }
5232         }
5233
5234       /* draw the big row-spanning focus rectangle, if needed */
5235       if (!has_can_focus_cell && node == cursor &&
5236           tree_view->priv->draw_keyfocus &&
5237           gtk_widget_has_visible_focus (widget))
5238         {
5239           gint tmp_y, tmp_height;
5240           GtkStateFlags focus_rect_state = 0;
5241
5242           gtk_style_context_save (context);
5243
5244           focus_rect_state = gtk_cell_renderer_get_state (NULL, widget, flags);
5245           gtk_style_context_set_state (context, focus_rect_state);
5246
5247           if (draw_hgrid_lines)
5248             {
5249               tmp_y = gtk_tree_view_get_row_y_offset (tree_view, tree, node) + grid_line_width / 2;
5250               tmp_height = gtk_tree_view_get_row_height (tree_view, node) - grid_line_width;
5251             }
5252           else
5253             {
5254               tmp_y = gtk_tree_view_get_row_y_offset (tree_view, tree, node);
5255               tmp_height = gtk_tree_view_get_row_height (tree_view, node);
5256             }
5257
5258           gtk_render_focus (context, cr,
5259                             0, tmp_y,
5260                             gdk_window_get_width (tree_view->priv->bin_window),
5261                             tmp_height);
5262
5263           gtk_style_context_restore (context);
5264         }
5265
5266       y_offset += max_height;
5267       if (node->children)
5268         {
5269           GtkTreeIter parent = iter;
5270           gboolean has_child;
5271
5272           tree = node->children;
5273           node = tree->root;
5274
5275           g_assert (node != tree->nil);
5276
5277           while (node->left != tree->nil)
5278             node = node->left;
5279           has_child = gtk_tree_model_iter_children (tree_view->priv->model,
5280                                                     &iter,
5281                                                     &parent);
5282           depth++;
5283
5284           /* Sanity Check! */
5285           TREE_VIEW_INTERNAL_ASSERT (has_child, FALSE);
5286         }
5287       else
5288         {
5289           gboolean done = FALSE;
5290
5291           do
5292             {
5293               node = _gtk_rbtree_next (tree, node);
5294               if (node != NULL)
5295                 {
5296                   gboolean has_next = gtk_tree_model_iter_next (tree_view->priv->model, &iter);
5297                   done = TRUE;
5298
5299                   /* Sanity Check! */
5300                   TREE_VIEW_INTERNAL_ASSERT (has_next, FALSE);
5301                 }
5302               else
5303                 {
5304                   GtkTreeIter parent_iter = iter;
5305                   gboolean has_parent;
5306
5307                   node = tree->parent_node;
5308                   tree = tree->parent_tree;
5309                   if (tree == NULL)
5310                     /* we should go to done to free some memory */
5311                     goto done;
5312                   has_parent = gtk_tree_model_iter_parent (tree_view->priv->model,
5313                                                            &iter,
5314                                                            &parent_iter);
5315                   depth--;
5316
5317                   /* Sanity check */
5318                   TREE_VIEW_INTERNAL_ASSERT (has_parent, FALSE);
5319                 }
5320             }
5321           while (!done);
5322         }
5323     }
5324   while (y_offset < clip.height);
5325
5326 done:
5327   gtk_tree_view_draw_grid_lines (tree_view, cr, n_visible_columns);
5328
5329   if (tree_view->priv->rubber_band_status == RUBBER_BAND_ACTIVE)
5330     gtk_tree_view_paint_rubber_band (tree_view, cr);
5331
5332   if (cursor_path)
5333     gtk_tree_path_free (cursor_path);
5334
5335   if (drag_dest_path)
5336     gtk_tree_path_free (drag_dest_path);
5337
5338   return FALSE;
5339 }
5340
5341 static gboolean
5342 gtk_tree_view_draw (GtkWidget *widget,
5343                     cairo_t   *cr)
5344 {
5345   GtkTreeView *tree_view = GTK_TREE_VIEW (widget);
5346   GtkWidget   *button;
5347
5348   if (gtk_cairo_should_draw_window (cr, tree_view->priv->bin_window))
5349     {
5350       GtkStyleContext *context;
5351       GList *tmp_list;
5352
5353       context = gtk_widget_get_style_context (widget);
5354
5355       cairo_save (cr);
5356
5357       gtk_style_context_save (context);
5358       gtk_style_context_add_class (context, GTK_STYLE_CLASS_VIEW);
5359
5360       gtk_cairo_transform_to_window (cr, widget, tree_view->priv->bin_window);
5361
5362       gtk_tree_view_bin_draw (widget, cr);
5363
5364       gtk_style_context_restore (context);
5365       cairo_restore (cr);
5366
5367       /* We can't just chain up to Container::draw as it will try to send the
5368        * event to the headers, so we handle propagating it to our children
5369        * (eg. widgets being edited) ourselves.
5370        */
5371       tmp_list = tree_view->priv->children;
5372       while (tmp_list)
5373         {
5374           GtkTreeViewChild *child = tmp_list->data;
5375           tmp_list = tmp_list->next;
5376
5377           gtk_container_propagate_draw (GTK_CONTAINER (tree_view), child->widget, cr);
5378         }
5379     }
5380
5381   if (gtk_cairo_should_draw_window (cr, tree_view->priv->header_window))
5382     {
5383       GList *list;
5384
5385       for (list = tree_view->priv->columns; list != NULL; list = list->next)
5386         {
5387           GtkTreeViewColumn *column = list->data;
5388
5389           if (column == tree_view->priv->drag_column)
5390             continue;
5391
5392           if (gtk_tree_view_column_get_visible (column))
5393             {
5394               button = gtk_tree_view_column_get_button (column);
5395               gtk_container_propagate_draw (GTK_CONTAINER (tree_view),
5396                                             button, cr);
5397             }
5398         }
5399     }
5400
5401   if (tree_view->priv->drag_window &&
5402       gtk_cairo_should_draw_window (cr, tree_view->priv->drag_window))
5403     {
5404       button = gtk_tree_view_column_get_button (tree_view->priv->drag_column);
5405       gtk_container_propagate_draw (GTK_CONTAINER (tree_view),
5406                                     button, cr);
5407     }
5408
5409   return FALSE;
5410 }
5411
5412 enum
5413 {
5414   DROP_HOME,
5415   DROP_RIGHT,
5416   DROP_LEFT,
5417   DROP_END
5418 };
5419
5420 /* returns 0x1 when no column has been found -- yes it's hackish */
5421 static GtkTreeViewColumn *
5422 gtk_tree_view_get_drop_column (GtkTreeView       *tree_view,
5423                                GtkTreeViewColumn *column,
5424                                gint               drop_position)
5425 {
5426   GtkTreeViewColumn *left_column = NULL;
5427   GtkTreeViewColumn *cur_column = NULL;
5428   GList *tmp_list;
5429
5430   if (!gtk_tree_view_column_get_reorderable (column))
5431     return (GtkTreeViewColumn *)0x1;
5432
5433   switch (drop_position)
5434     {
5435       case DROP_HOME:
5436         /* find first column where we can drop */
5437         tmp_list = tree_view->priv->columns;
5438         if (column == GTK_TREE_VIEW_COLUMN (tmp_list->data))
5439           return (GtkTreeViewColumn *)0x1;
5440
5441         while (tmp_list)
5442           {
5443             g_assert (tmp_list);
5444
5445             cur_column = GTK_TREE_VIEW_COLUMN (tmp_list->data);
5446             tmp_list = tmp_list->next;
5447
5448             if (left_column &&
5449                 gtk_tree_view_column_get_visible (left_column) == FALSE)
5450               continue;
5451
5452             if (!tree_view->priv->column_drop_func)
5453               return left_column;
5454
5455             if (!tree_view->priv->column_drop_func (tree_view, column, left_column, cur_column, tree_view->priv->column_drop_func_data))
5456               {
5457                 left_column = cur_column;
5458                 continue;
5459               }
5460
5461             return left_column;
5462           }
5463
5464         if (!tree_view->priv->column_drop_func)
5465           return left_column;
5466
5467         if (tree_view->priv->column_drop_func (tree_view, column, left_column, NULL, tree_view->priv->column_drop_func_data))
5468           return left_column;
5469         else
5470           return (GtkTreeViewColumn *)0x1;
5471         break;
5472
5473       case DROP_RIGHT:
5474         /* find first column after column where we can drop */
5475         tmp_list = tree_view->priv->columns;
5476
5477         for (; tmp_list; tmp_list = tmp_list->next)
5478           if (GTK_TREE_VIEW_COLUMN (tmp_list->data) == column)
5479             break;
5480
5481         if (!tmp_list || !tmp_list->next)
5482           return (GtkTreeViewColumn *)0x1;
5483
5484         tmp_list = tmp_list->next;
5485         left_column = GTK_TREE_VIEW_COLUMN (tmp_list->data);
5486         tmp_list = tmp_list->next;
5487
5488         while (tmp_list)
5489           {
5490             g_assert (tmp_list);
5491
5492             cur_column = GTK_TREE_VIEW_COLUMN (tmp_list->data);
5493             tmp_list = tmp_list->next;
5494
5495             if (left_column &&
5496                 gtk_tree_view_column_get_visible (left_column) == FALSE)
5497               {
5498                 left_column = cur_column;
5499                 if (tmp_list)
5500                   tmp_list = tmp_list->next;
5501                 continue;
5502               }
5503
5504             if (!tree_view->priv->column_drop_func)
5505               return left_column;
5506
5507             if (!tree_view->priv->column_drop_func (tree_view, column, left_column, cur_column, tree_view->priv->column_drop_func_data))
5508               {
5509                 left_column = cur_column;
5510                 continue;
5511               }
5512
5513             return left_column;
5514           }
5515
5516         if (!tree_view->priv->column_drop_func)
5517           return left_column;
5518
5519         if (tree_view->priv->column_drop_func (tree_view, column, left_column, NULL, tree_view->priv->column_drop_func_data))
5520           return left_column;
5521         else
5522           return (GtkTreeViewColumn *)0x1;
5523         break;
5524
5525       case DROP_LEFT:
5526         /* find first column before column where we can drop */
5527         tmp_list = tree_view->priv->columns;
5528
5529         for (; tmp_list; tmp_list = tmp_list->next)
5530           if (GTK_TREE_VIEW_COLUMN (tmp_list->data) == column)
5531             break;
5532
5533         if (!tmp_list || !tmp_list->prev)
5534           return (GtkTreeViewColumn *)0x1;
5535
5536         tmp_list = tmp_list->prev;
5537         cur_column = GTK_TREE_VIEW_COLUMN (tmp_list->data);
5538         tmp_list = tmp_list->prev;
5539
5540         while (tmp_list)
5541           {
5542             g_assert (tmp_list);
5543
5544             left_column = GTK_TREE_VIEW_COLUMN (tmp_list->data);
5545
5546             if (left_column &&
5547                 gtk_tree_view_column_get_visible (left_column) == FALSE)
5548               {
5549                 /*if (!tmp_list->prev)
5550                   return (GtkTreeViewColumn *)0x1;
5551                   */
5552 /*
5553                 cur_column = GTK_TREE_VIEW_COLUMN (tmp_list->prev->data);
5554                 tmp_list = tmp_list->prev->prev;
5555                 continue;*/
5556
5557                 cur_column = left_column;
5558                 if (tmp_list)
5559                   tmp_list = tmp_list->prev;
5560                 continue;
5561               }
5562
5563             if (!tree_view->priv->column_drop_func)
5564               return left_column;
5565
5566             if (tree_view->priv->column_drop_func (tree_view, column, left_column, cur_column, tree_view->priv->column_drop_func_data))
5567               return left_column;
5568
5569             cur_column = left_column;
5570             tmp_list = tmp_list->prev;
5571           }
5572
5573         if (!tree_view->priv->column_drop_func)
5574           return NULL;
5575
5576         if (tree_view->priv->column_drop_func (tree_view, column, NULL, cur_column, tree_view->priv->column_drop_func_data))
5577           return NULL;
5578         else
5579           return (GtkTreeViewColumn *)0x1;
5580         break;
5581
5582       case DROP_END:
5583         /* same as DROP_HOME case, but doing it backwards */
5584         tmp_list = g_list_last (tree_view->priv->columns);
5585         cur_column = NULL;
5586
5587         if (column == GTK_TREE_VIEW_COLUMN (tmp_list->data))
5588           return (GtkTreeViewColumn *)0x1;
5589
5590         while (tmp_list)
5591           {
5592             g_assert (tmp_list);
5593
5594             left_column = GTK_TREE_VIEW_COLUMN (tmp_list->data);
5595
5596             if (left_column &&
5597                 gtk_tree_view_column_get_visible (left_column) == FALSE)
5598               {
5599                 cur_column = left_column;
5600                 tmp_list = tmp_list->prev;
5601               }
5602
5603             if (!tree_view->priv->column_drop_func)
5604               return left_column;
5605
5606             if (tree_view->priv->column_drop_func (tree_view, column, left_column, cur_column, tree_view->priv->column_drop_func_data))
5607               return left_column;
5608
5609             cur_column = left_column;
5610             tmp_list = tmp_list->prev;
5611           }
5612
5613         if (!tree_view->priv->column_drop_func)
5614           return NULL;
5615
5616         if (tree_view->priv->column_drop_func (tree_view, column, NULL, cur_column, tree_view->priv->column_drop_func_data))
5617           return NULL;
5618         else
5619           return (GtkTreeViewColumn *)0x1;
5620         break;
5621     }
5622
5623   return (GtkTreeViewColumn *)0x1;
5624 }
5625
5626 static gboolean
5627 gtk_tree_view_key_press (GtkWidget   *widget,
5628                          GdkEventKey *event)
5629 {
5630   GtkTreeView *tree_view = (GtkTreeView *) widget;
5631   GtkWidget   *button;
5632
5633   if (tree_view->priv->rubber_band_status)
5634     {
5635       if (event->keyval == GDK_KEY_Escape)
5636         gtk_tree_view_stop_rubber_band (tree_view);
5637
5638       return TRUE;
5639     }
5640
5641   if (tree_view->priv->in_column_drag)
5642     {
5643       if (event->keyval == GDK_KEY_Escape)
5644         {
5645           tree_view->priv->cur_reorder = NULL;
5646           gtk_tree_view_button_release_drag_column (widget, NULL);
5647         }
5648       return TRUE;
5649     }
5650
5651   if (tree_view->priv->headers_visible)
5652     {
5653       GList *focus_column;
5654       gboolean rtl;
5655
5656       rtl = (gtk_widget_get_direction (GTK_WIDGET (tree_view)) == GTK_TEXT_DIR_RTL);
5657
5658       for (focus_column = tree_view->priv->columns;
5659            focus_column;
5660            focus_column = focus_column->next)
5661         {
5662           GtkTreeViewColumn *column = GTK_TREE_VIEW_COLUMN (focus_column->data);
5663
5664           button = gtk_tree_view_column_get_button (column);
5665           if (gtk_widget_has_focus (button))
5666             break;
5667         }
5668
5669       if (focus_column &&
5670           (event->state & GDK_SHIFT_MASK) && (event->state & GDK_MOD1_MASK) &&
5671           (event->keyval == GDK_KEY_Left || event->keyval == GDK_KEY_KP_Left
5672            || event->keyval == GDK_KEY_Right || event->keyval == GDK_KEY_KP_Right))
5673         {
5674           GtkTreeViewColumn *column = GTK_TREE_VIEW_COLUMN (focus_column->data);
5675           gint max_width, min_width;
5676
5677           if (!gtk_tree_view_column_get_resizable (column))
5678             {
5679               gtk_widget_error_bell (widget);
5680               return TRUE;
5681             }
5682
5683           if (event->keyval == (rtl ? GDK_KEY_Right : GDK_KEY_Left)
5684               || event->keyval == (rtl ? GDK_KEY_KP_Right : GDK_KEY_KP_Left))
5685             {
5686               GtkRequisition button_req;
5687               gint old_width = _gtk_tree_view_column_get_resized_width (column);
5688               gint new_width;
5689
5690               button = gtk_tree_view_column_get_button (column);
5691
5692               gtk_widget_get_preferred_size (button, &button_req, NULL);
5693
5694               new_width = MAX (old_width, gtk_tree_view_column_get_width (column));
5695               new_width -= 2;
5696               if (new_width < 0)
5697                 new_width = 0;
5698
5699               _gtk_tree_view_column_set_resized_width (column, new_width);
5700
5701               min_width = gtk_tree_view_column_get_min_width (column);
5702               if (min_width == -1)
5703                 new_width = MAX (button_req.width, new_width);
5704               else
5705                 {
5706                   new_width = MAX (min_width, new_width);
5707                 }
5708
5709               max_width = gtk_tree_view_column_get_max_width (column);
5710               if (max_width != -1)
5711                 new_width = MIN (new_width, max_width);
5712
5713               _gtk_tree_view_column_set_use_resized_width (column, TRUE);
5714
5715               if (new_width != old_width)
5716                 {
5717                   _gtk_tree_view_column_set_resized_width (column, new_width);
5718                   gtk_widget_queue_resize (widget);
5719                 }
5720               else
5721                 gtk_widget_error_bell (widget);
5722             }
5723           else if (event->keyval == (rtl ? GDK_KEY_Left : GDK_KEY_Right)
5724                    || event->keyval == (rtl ? GDK_KEY_KP_Left : GDK_KEY_KP_Right))
5725             {
5726               gint old_width = _gtk_tree_view_column_get_resized_width (column);
5727               gint new_width;
5728
5729               new_width = MAX (old_width, gtk_tree_view_column_get_width (column));
5730               new_width += 2;
5731
5732               max_width = gtk_tree_view_column_get_max_width (column);
5733               if (max_width != -1)
5734                 new_width = MIN (new_width, max_width);
5735
5736               _gtk_tree_view_column_set_use_resized_width (column, TRUE);
5737
5738               if (new_width != old_width)
5739                 {
5740                   _gtk_tree_view_column_set_resized_width (column, new_width);
5741                   gtk_widget_queue_resize (widget);
5742                 }
5743               else
5744                 gtk_widget_error_bell (widget);
5745             }
5746
5747           return TRUE;
5748         }
5749
5750       if (focus_column &&
5751           (event->state & GDK_MOD1_MASK) &&
5752           (event->keyval == GDK_KEY_Left || event->keyval == GDK_KEY_KP_Left
5753            || event->keyval == GDK_KEY_Right || event->keyval == GDK_KEY_KP_Right
5754            || event->keyval == GDK_KEY_Home || event->keyval == GDK_KEY_KP_Home
5755            || event->keyval == GDK_KEY_End || event->keyval == GDK_KEY_KP_End))
5756         {
5757           GtkTreeViewColumn *column = GTK_TREE_VIEW_COLUMN (focus_column->data);
5758
5759           if (event->keyval == (rtl ? GDK_KEY_Right : GDK_KEY_Left)
5760               || event->keyval == (rtl ? GDK_KEY_KP_Right : GDK_KEY_KP_Left))
5761             {
5762               GtkTreeViewColumn *col;
5763               col = gtk_tree_view_get_drop_column (tree_view, column, DROP_LEFT);
5764               if (col != (GtkTreeViewColumn *)0x1)
5765                 gtk_tree_view_move_column_after (tree_view, column, col);
5766               else
5767                 gtk_widget_error_bell (widget);
5768             }
5769           else if (event->keyval == (rtl ? GDK_KEY_Left : GDK_KEY_Right)
5770                    || event->keyval == (rtl ? GDK_KEY_KP_Left : GDK_KEY_KP_Right))
5771             {
5772               GtkTreeViewColumn *col;
5773               col = gtk_tree_view_get_drop_column (tree_view, column, DROP_RIGHT);
5774               if (col != (GtkTreeViewColumn *)0x1)
5775                 gtk_tree_view_move_column_after (tree_view, column, col);
5776               else
5777                 gtk_widget_error_bell (widget);
5778             }
5779           else if (event->keyval == GDK_KEY_Home || event->keyval == GDK_KEY_KP_Home)
5780             {
5781               GtkTreeViewColumn *col;
5782               col = gtk_tree_view_get_drop_column (tree_view, column, DROP_HOME);
5783               if (col != (GtkTreeViewColumn *)0x1)
5784                 gtk_tree_view_move_column_after (tree_view, column, col);
5785               else
5786                 gtk_widget_error_bell (widget);
5787             }
5788           else if (event->keyval == GDK_KEY_End || event->keyval == GDK_KEY_KP_End)
5789             {
5790               GtkTreeViewColumn *col;
5791               col = gtk_tree_view_get_drop_column (tree_view, column, DROP_END);
5792               if (col != (GtkTreeViewColumn *)0x1)
5793                 gtk_tree_view_move_column_after (tree_view, column, col);
5794               else
5795                 gtk_widget_error_bell (widget);
5796             }
5797
5798           return TRUE;
5799         }
5800     }
5801
5802   /* Chain up to the parent class.  It handles the keybindings. */
5803   if (GTK_WIDGET_CLASS (gtk_tree_view_parent_class)->key_press_event (widget, event))
5804     return TRUE;
5805
5806   if (tree_view->priv->search_entry_avoid_unhandled_binding)
5807     {
5808       tree_view->priv->search_entry_avoid_unhandled_binding = FALSE;
5809       return FALSE;
5810     }
5811
5812   /* We pass the event to the search_entry.  If its text changes, then we start
5813    * the typeahead find capabilities. */
5814   if (gtk_widget_has_focus (GTK_WIDGET (tree_view))
5815       && tree_view->priv->enable_search
5816       && !tree_view->priv->search_custom_entry_set)
5817     {
5818       GdkEvent *new_event;
5819       char *old_text;
5820       const char *new_text;
5821       gboolean retval;
5822       GdkScreen *screen;
5823       gboolean text_modified;
5824       gulong popup_menu_id;
5825
5826       gtk_tree_view_ensure_interactive_directory (tree_view);
5827
5828       /* Make a copy of the current text */
5829       old_text = g_strdup (gtk_entry_get_text (GTK_ENTRY (tree_view->priv->search_entry)));
5830       new_event = gdk_event_copy ((GdkEvent *) event);
5831       g_object_unref (((GdkEventKey *) new_event)->window);
5832       ((GdkEventKey *) new_event)->window = g_object_ref (gtk_widget_get_window (tree_view->priv->search_window));
5833       gtk_widget_realize (tree_view->priv->search_window);
5834
5835       popup_menu_id = g_signal_connect (tree_view->priv->search_entry,
5836                                         "popup-menu", G_CALLBACK (gtk_true),
5837                                         NULL);
5838
5839       /* Move the entry off screen */
5840       screen = gtk_widget_get_screen (GTK_WIDGET (tree_view));
5841       gtk_window_move (GTK_WINDOW (tree_view->priv->search_window),
5842                        gdk_screen_get_width (screen) + 1,
5843                        gdk_screen_get_height (screen) + 1);
5844       gtk_widget_show (tree_view->priv->search_window);
5845
5846       /* Send the event to the window.  If the preedit_changed signal is emitted
5847        * during this event, we will set priv->imcontext_changed  */
5848       tree_view->priv->imcontext_changed = FALSE;
5849       retval = gtk_widget_event (tree_view->priv->search_window, new_event);
5850       gdk_event_free (new_event);
5851       gtk_widget_hide (tree_view->priv->search_window);
5852
5853       g_signal_handler_disconnect (tree_view->priv->search_entry,
5854                                    popup_menu_id);
5855
5856       /* We check to make sure that the entry tried to handle the text, and that
5857        * the text has changed.
5858        */
5859       new_text = gtk_entry_get_text (GTK_ENTRY (tree_view->priv->search_entry));
5860       text_modified = strcmp (old_text, new_text) != 0;
5861       g_free (old_text);
5862       if (tree_view->priv->imcontext_changed ||    /* we're in a preedit */
5863           (retval && text_modified))               /* ...or the text was modified */
5864         {
5865           if (gtk_tree_view_real_start_interactive_search (tree_view,
5866                                                            gdk_event_get_device ((GdkEvent *) event),
5867                                                            FALSE))
5868             {
5869               gtk_widget_grab_focus (GTK_WIDGET (tree_view));
5870               return TRUE;
5871             }
5872           else
5873             {
5874               gtk_entry_set_text (GTK_ENTRY (tree_view->priv->search_entry), "");
5875               return FALSE;
5876             }
5877         }
5878     }
5879
5880   return FALSE;
5881 }
5882
5883 static gboolean
5884 gtk_tree_view_key_release (GtkWidget   *widget,
5885                            GdkEventKey *event)
5886 {
5887   GtkTreeView *tree_view = GTK_TREE_VIEW (widget);
5888
5889   if (tree_view->priv->rubber_band_status)
5890     return TRUE;
5891
5892   return GTK_WIDGET_CLASS (gtk_tree_view_parent_class)->key_release_event (widget, event);
5893 }
5894
5895 /* FIXME Is this function necessary? Can I get an enter_notify event
5896  * w/o either an expose event or a mouse motion event?
5897  */
5898 static gboolean
5899 gtk_tree_view_enter_notify (GtkWidget        *widget,
5900                             GdkEventCrossing *event)
5901 {
5902   GtkTreeView *tree_view = GTK_TREE_VIEW (widget);
5903   GtkRBTree *tree;
5904   GtkRBNode *node;
5905   gint new_y;
5906
5907   /* Sanity check it */
5908   if (event->window != tree_view->priv->bin_window)
5909     return FALSE;
5910
5911   if (tree_view->priv->tree == NULL)
5912     return FALSE;
5913
5914   if (event->mode == GDK_CROSSING_GRAB ||
5915       event->mode == GDK_CROSSING_GTK_GRAB ||
5916       event->mode == GDK_CROSSING_GTK_UNGRAB ||
5917       event->mode == GDK_CROSSING_STATE_CHANGED)
5918     return TRUE;
5919
5920   /* find the node internally */
5921   new_y = TREE_WINDOW_Y_TO_RBTREE_Y(tree_view, event->y);
5922   if (new_y < 0)
5923     new_y = 0;
5924   _gtk_rbtree_find_offset (tree_view->priv->tree, new_y, &tree, &node);
5925
5926   tree_view->priv->event_last_x = event->x;
5927   tree_view->priv->event_last_y = event->y;
5928
5929   if ((tree_view->priv->button_pressed_node == NULL) ||
5930       (tree_view->priv->button_pressed_node == node))
5931     prelight_or_select (tree_view, tree, node, event->x, event->y);
5932
5933   return TRUE;
5934 }
5935
5936 static gboolean
5937 gtk_tree_view_leave_notify (GtkWidget        *widget,
5938                             GdkEventCrossing *event)
5939 {
5940   GtkTreeView *tree_view;
5941
5942   if (event->mode == GDK_CROSSING_GRAB ||
5943       event->mode == GDK_CROSSING_GTK_GRAB ||
5944       event->mode == GDK_CROSSING_GTK_UNGRAB)
5945     return TRUE;
5946
5947   tree_view = GTK_TREE_VIEW (widget);
5948
5949   if (tree_view->priv->prelight_node)
5950     _gtk_tree_view_queue_draw_node (tree_view,
5951                                    tree_view->priv->prelight_tree,
5952                                    tree_view->priv->prelight_node,
5953                                    NULL);
5954
5955   tree_view->priv->event_last_x = -10000;
5956   tree_view->priv->event_last_y = -10000;
5957
5958   prelight_or_select (tree_view,
5959                       NULL, NULL,
5960                       -1000, -1000); /* coords not possibly over an arrow */
5961
5962   return TRUE;
5963 }
5964
5965
5966 static gint
5967 gtk_tree_view_focus_out (GtkWidget     *widget,
5968                          GdkEventFocus *event)
5969 {
5970   GtkTreeView *tree_view;
5971
5972   tree_view = GTK_TREE_VIEW (widget);
5973
5974   gtk_widget_queue_draw (widget);
5975
5976   /* destroy interactive search dialog */
5977   if (tree_view->priv->search_window)
5978     gtk_tree_view_search_dialog_hide (tree_view->priv->search_window, tree_view,
5979                                       gdk_event_get_device ((GdkEvent *) event));
5980
5981   return FALSE;
5982 }
5983
5984
5985 /* Incremental Reflow
5986  */
5987
5988 static void
5989 gtk_tree_view_node_queue_redraw (GtkTreeView *tree_view,
5990                                  GtkRBTree   *tree,
5991                                  GtkRBNode   *node)
5992 {
5993   GtkAllocation allocation;
5994   gint y;
5995
5996   y = _gtk_rbtree_node_find_offset (tree, node)
5997     - gtk_adjustment_get_value (tree_view->priv->vadjustment)
5998     + gtk_tree_view_get_effective_header_height (tree_view);
5999
6000   gtk_widget_get_allocation (GTK_WIDGET (tree_view), &allocation);
6001   gtk_widget_queue_draw_area (GTK_WIDGET (tree_view),
6002                               0, y,
6003                               allocation.width,
6004                               GTK_RBNODE_GET_HEIGHT (node));
6005 }
6006
6007 static gboolean
6008 node_is_visible (GtkTreeView *tree_view,
6009                  GtkRBTree   *tree,
6010                  GtkRBNode   *node)
6011 {
6012   int y;
6013   int height;
6014
6015   y = _gtk_rbtree_node_find_offset (tree, node);
6016   height = gtk_tree_view_get_row_height (tree_view, node);
6017
6018   if (y >= gtk_adjustment_get_value (tree_view->priv->vadjustment) &&
6019       y + height <= (gtk_adjustment_get_value (tree_view->priv->vadjustment)
6020                      + gtk_adjustment_get_page_size (tree_view->priv->vadjustment)))
6021     return TRUE;
6022
6023   return FALSE;
6024 }
6025
6026 /* Returns TRUE if it updated the size
6027  */
6028 static gboolean
6029 validate_row (GtkTreeView *tree_view,
6030               GtkRBTree   *tree,
6031               GtkRBNode   *node,
6032               GtkTreeIter *iter,
6033               GtkTreePath *path)
6034 {
6035   GtkTreeViewColumn *column;
6036   GList *list, *first_column, *last_column;
6037   gint height = 0;
6038   gint horizontal_separator;
6039   gint vertical_separator;
6040   gint depth = gtk_tree_path_get_depth (path);
6041   gboolean retval = FALSE;
6042   gboolean is_separator = FALSE;
6043   gboolean draw_vgrid_lines, draw_hgrid_lines;
6044   gint focus_pad;
6045   gint grid_line_width;
6046   gboolean wide_separators;
6047   gint separator_height;
6048
6049   /* double check the row needs validating */
6050   if (! GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_INVALID) &&
6051       ! GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_COLUMN_INVALID))
6052     return FALSE;
6053
6054   is_separator = row_is_separator (tree_view, iter, NULL);
6055
6056   gtk_widget_style_get (GTK_WIDGET (tree_view),
6057                         "focus-padding", &focus_pad,
6058                         "horizontal-separator", &horizontal_separator,
6059                         "vertical-separator", &vertical_separator,
6060                         "grid-line-width", &grid_line_width,
6061                         "wide-separators",  &wide_separators,
6062                         "separator-height", &separator_height,
6063                         NULL);
6064
6065   draw_vgrid_lines =
6066     tree_view->priv->grid_lines == GTK_TREE_VIEW_GRID_LINES_VERTICAL
6067     || tree_view->priv->grid_lines == GTK_TREE_VIEW_GRID_LINES_BOTH;
6068   draw_hgrid_lines =
6069     tree_view->priv->grid_lines == GTK_TREE_VIEW_GRID_LINES_HORIZONTAL
6070     || tree_view->priv->grid_lines == GTK_TREE_VIEW_GRID_LINES_BOTH;
6071
6072   for (last_column = g_list_last (tree_view->priv->columns);
6073        last_column &&
6074        !(gtk_tree_view_column_get_visible (GTK_TREE_VIEW_COLUMN (last_column->data)));
6075        last_column = last_column->prev)
6076     ;
6077
6078   for (first_column = g_list_first (tree_view->priv->columns);
6079        first_column &&
6080        !(gtk_tree_view_column_get_visible (GTK_TREE_VIEW_COLUMN (first_column->data)));
6081        first_column = first_column->next)
6082     ;
6083
6084   for (list = tree_view->priv->columns; list; list = list->next)
6085     {
6086       gint padding = 0;
6087       gint original_width;
6088       gint new_width;
6089       gint row_height;
6090
6091       column = list->data;
6092
6093       if (!gtk_tree_view_column_get_visible (column))
6094         continue;
6095
6096       if (GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_COLUMN_INVALID) &&
6097           !_gtk_tree_view_column_cell_get_dirty (column))
6098         continue;
6099
6100       original_width = _gtk_tree_view_column_get_requested_width (column);
6101
6102       gtk_tree_view_column_cell_set_cell_data (column, tree_view->priv->model, iter,
6103                                                GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_PARENT),
6104                                                node->children?TRUE:FALSE);
6105       gtk_tree_view_column_cell_get_size (column,
6106                                           NULL, NULL, NULL,
6107                                           NULL, &row_height);
6108
6109       if (!is_separator)
6110         {
6111           row_height += vertical_separator;
6112           height = MAX (height, row_height);
6113           height = MAX (height, tree_view->priv->expander_size);
6114         }
6115       else
6116         {
6117           if (wide_separators)
6118             height = separator_height + 2 * focus_pad;
6119           else
6120             height = 2 + 2 * focus_pad;
6121         }
6122
6123       if (gtk_tree_view_is_expander_column (tree_view, column))
6124         {
6125           padding += horizontal_separator + (depth - 1) * tree_view->priv->level_indentation;
6126
6127           if (gtk_tree_view_draw_expanders (tree_view))
6128             padding += depth * tree_view->priv->expander_size;
6129         }
6130       else
6131         padding += horizontal_separator;
6132
6133       if (draw_vgrid_lines)
6134         {
6135           if (list->data == first_column || list->data == last_column)
6136             padding += grid_line_width / 2.0;
6137           else
6138             padding += grid_line_width;
6139         }
6140
6141       /* Update the padding for the column */
6142       _gtk_tree_view_column_push_padding (column, padding);
6143       new_width = _gtk_tree_view_column_get_requested_width (column);
6144
6145       if (new_width > original_width)
6146         retval = TRUE;
6147     }
6148
6149   if (draw_hgrid_lines)
6150     height += grid_line_width;
6151
6152   if (height != GTK_RBNODE_GET_HEIGHT (node))
6153     {
6154       retval = TRUE;
6155       _gtk_rbtree_node_set_height (tree, node, height);
6156     }
6157   _gtk_rbtree_node_mark_valid (tree, node);
6158   tree_view->priv->post_validation_flag = TRUE;
6159
6160   return retval;
6161 }
6162
6163
6164 static void
6165 validate_visible_area (GtkTreeView *tree_view)
6166 {
6167   GtkAllocation allocation;
6168   GtkTreePath *path = NULL;
6169   GtkTreePath *above_path = NULL;
6170   GtkTreeIter iter;
6171   GtkRBTree *tree = NULL;
6172   GtkRBNode *node = NULL;
6173   gboolean need_redraw = FALSE;
6174   gboolean size_changed = FALSE;
6175   gint total_height;
6176   gint area_above = 0;
6177   gint area_below = 0;
6178
6179   if (tree_view->priv->tree == NULL)
6180     return;
6181
6182   if (! GTK_RBNODE_FLAG_SET (tree_view->priv->tree->root, GTK_RBNODE_DESCENDANTS_INVALID) &&
6183       tree_view->priv->scroll_to_path == NULL)
6184     return;
6185
6186   gtk_widget_get_allocation (GTK_WIDGET (tree_view), &allocation);
6187   total_height = allocation.height - gtk_tree_view_get_effective_header_height (tree_view);
6188
6189   if (total_height == 0)
6190     return;
6191
6192   /* First, we check to see if we need to scroll anywhere
6193    */
6194   if (tree_view->priv->scroll_to_path)
6195     {
6196       path = gtk_tree_row_reference_get_path (tree_view->priv->scroll_to_path);
6197       if (path && !_gtk_tree_view_find_node (tree_view, path, &tree, &node))
6198         {
6199           /* we are going to scroll, and will update dy */
6200           gtk_tree_model_get_iter (tree_view->priv->model, &iter, path);
6201           if (GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_INVALID) ||
6202               GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_COLUMN_INVALID))
6203             {
6204               _gtk_tree_view_queue_draw_node (tree_view, tree, node, NULL);
6205               if (validate_row (tree_view, tree, node, &iter, path))
6206                 size_changed = TRUE;
6207             }
6208
6209           if (tree_view->priv->scroll_to_use_align)
6210             {
6211               gint height = gtk_tree_view_get_row_height (tree_view, node);
6212               area_above = (total_height - height) *
6213                 tree_view->priv->scroll_to_row_align;
6214               area_below = total_height - area_above - height;
6215               area_above = MAX (area_above, 0);
6216               area_below = MAX (area_below, 0);
6217             }
6218           else
6219             {
6220               /* two cases:
6221                * 1) row not visible
6222                * 2) row visible
6223                */
6224               gint dy;
6225               gint height = gtk_tree_view_get_row_height (tree_view, node);
6226
6227               dy = _gtk_rbtree_node_find_offset (tree, node);
6228
6229               if (dy >= gtk_adjustment_get_value (tree_view->priv->vadjustment) &&
6230                   dy + height <= (gtk_adjustment_get_value (tree_view->priv->vadjustment)
6231                                   + gtk_adjustment_get_page_size (tree_view->priv->vadjustment)))
6232                 {
6233                   /* row visible: keep the row at the same position */
6234                   area_above = dy - gtk_adjustment_get_value (tree_view->priv->vadjustment);
6235                   area_below = (gtk_adjustment_get_value (tree_view->priv->vadjustment) +
6236                                 gtk_adjustment_get_page_size (tree_view->priv->vadjustment))
6237                                - dy - height;
6238                 }
6239               else
6240                 {
6241                   /* row not visible */
6242                   if (dy >= 0
6243                       && dy + height <= gtk_adjustment_get_page_size (tree_view->priv->vadjustment))
6244                     {
6245                       /* row at the beginning -- fixed */
6246                       area_above = dy;
6247                       area_below = gtk_adjustment_get_page_size (tree_view->priv->vadjustment)
6248                                    - area_above - height;
6249                     }
6250                   else if (dy >= (gtk_adjustment_get_upper (tree_view->priv->vadjustment) -
6251                                   gtk_adjustment_get_page_size (tree_view->priv->vadjustment)))
6252                     {
6253                       /* row at the end -- fixed */
6254                       area_above = dy - (gtk_adjustment_get_upper (tree_view->priv->vadjustment) -
6255                                    gtk_adjustment_get_page_size (tree_view->priv->vadjustment));
6256                       area_below = gtk_adjustment_get_page_size (tree_view->priv->vadjustment) -
6257                                    area_above - height;
6258
6259                       if (area_below < 0)
6260                         {
6261                           area_above = gtk_adjustment_get_page_size (tree_view->priv->vadjustment) - height;
6262                           area_below = 0;
6263                         }
6264                     }
6265                   else
6266                     {
6267                       /* row somewhere in the middle, bring it to the top
6268                        * of the view
6269                        */
6270                       area_above = 0;
6271                       area_below = total_height - height;
6272                     }
6273                 }
6274             }
6275         }
6276       else
6277         /* the scroll to isn't valid; ignore it.
6278          */
6279         {
6280           if (tree_view->priv->scroll_to_path && !path)
6281             {
6282               gtk_tree_row_reference_free (tree_view->priv->scroll_to_path);
6283               tree_view->priv->scroll_to_path = NULL;
6284             }
6285           if (path)
6286             gtk_tree_path_free (path);
6287           path = NULL;
6288         }
6289     }
6290
6291   /* We didn't have a scroll_to set, so we just handle things normally
6292    */
6293   if (path == NULL)
6294     {
6295       gint offset;
6296
6297       offset = _gtk_rbtree_find_offset (tree_view->priv->tree,
6298                                         TREE_WINDOW_Y_TO_RBTREE_Y (tree_view, 0),
6299                                         &tree, &node);
6300       if (node == NULL)
6301         {
6302           /* In this case, nothing has been validated */
6303           path = gtk_tree_path_new_first ();
6304           _gtk_tree_view_find_node (tree_view, path, &tree, &node);
6305         }
6306       else
6307         {
6308           path = _gtk_tree_view_find_path (tree_view, tree, node);
6309           total_height += offset;
6310         }
6311
6312       gtk_tree_model_get_iter (tree_view->priv->model, &iter, path);
6313
6314       if (GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_INVALID) ||
6315           GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_COLUMN_INVALID))
6316         {
6317           _gtk_tree_view_queue_draw_node (tree_view, tree, node, NULL);
6318           if (validate_row (tree_view, tree, node, &iter, path))
6319             size_changed = TRUE;
6320         }
6321       area_above = 0;
6322       area_below = total_height - gtk_tree_view_get_row_height (tree_view, node);
6323     }
6324
6325   above_path = gtk_tree_path_copy (path);
6326
6327   /* if we do not validate any row above the new top_row, we will make sure
6328    * that the row immediately above top_row has been validated. (if we do not
6329    * do this, _gtk_rbtree_find_offset will find the row above top_row, because
6330    * when invalidated that row's height will be zero. and this will mess up
6331    * scrolling).
6332    */
6333   if (area_above == 0)
6334     {
6335       GtkRBTree *tmptree;
6336       GtkRBNode *tmpnode;
6337
6338       _gtk_tree_view_find_node (tree_view, above_path, &tmptree, &tmpnode);
6339       _gtk_rbtree_prev_full (tmptree, tmpnode, &tmptree, &tmpnode);
6340
6341       if (tmpnode)
6342         {
6343           GtkTreePath *tmppath;
6344           GtkTreeIter tmpiter;
6345
6346           tmppath = _gtk_tree_view_find_path (tree_view, tmptree, tmpnode);
6347           gtk_tree_model_get_iter (tree_view->priv->model, &tmpiter, tmppath);
6348
6349           if (GTK_RBNODE_FLAG_SET (tmpnode, GTK_RBNODE_INVALID) ||
6350               GTK_RBNODE_FLAG_SET (tmpnode, GTK_RBNODE_COLUMN_INVALID))
6351             {
6352               _gtk_tree_view_queue_draw_node (tree_view, tmptree, tmpnode, NULL);
6353               if (validate_row (tree_view, tmptree, tmpnode, &tmpiter, tmppath))
6354                 size_changed = TRUE;
6355             }
6356
6357           gtk_tree_path_free (tmppath);
6358         }
6359     }
6360
6361   /* Now, we walk forwards and backwards, measuring rows. Unfortunately,
6362    * backwards is much slower then forward, as there is no iter_prev function.
6363    * We go forwards first in case we run out of tree.  Then we go backwards to
6364    * fill out the top.
6365    */
6366   while (node && area_below > 0)
6367     {
6368       if (node->children)
6369         {
6370           GtkTreeIter parent = iter;
6371           gboolean has_child;
6372
6373           tree = node->children;
6374           node = tree->root;
6375
6376           g_assert (node != tree->nil);
6377
6378           while (node->left != tree->nil)
6379             node = node->left;
6380           has_child = gtk_tree_model_iter_children (tree_view->priv->model,
6381                                                     &iter,
6382                                                     &parent);
6383           TREE_VIEW_INTERNAL_ASSERT_VOID (has_child);
6384           gtk_tree_path_down (path);
6385         }
6386       else
6387         {
6388           gboolean done = FALSE;
6389           do
6390             {
6391               node = _gtk_rbtree_next (tree, node);
6392               if (node != NULL)
6393                 {
6394                   gboolean has_next = gtk_tree_model_iter_next (tree_view->priv->model, &iter);
6395                   done = TRUE;
6396                   gtk_tree_path_next (path);
6397
6398                   /* Sanity Check! */
6399                   TREE_VIEW_INTERNAL_ASSERT_VOID (has_next);
6400                 }
6401               else
6402                 {
6403                   GtkTreeIter parent_iter = iter;
6404                   gboolean has_parent;
6405
6406                   node = tree->parent_node;
6407                   tree = tree->parent_tree;
6408                   if (tree == NULL)
6409                     break;
6410                   has_parent = gtk_tree_model_iter_parent (tree_view->priv->model,
6411                                                            &iter,
6412                                                            &parent_iter);
6413                   gtk_tree_path_up (path);
6414
6415                   /* Sanity check */
6416                   TREE_VIEW_INTERNAL_ASSERT_VOID (has_parent);
6417                 }
6418             }
6419           while (!done);
6420         }
6421
6422       if (!node)
6423         break;
6424
6425       if (GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_INVALID) ||
6426           GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_COLUMN_INVALID))
6427         {
6428           _gtk_tree_view_queue_draw_node (tree_view, tree, node, NULL);
6429           if (validate_row (tree_view, tree, node, &iter, path))
6430               size_changed = TRUE;
6431         }
6432
6433       area_below -= gtk_tree_view_get_row_height (tree_view, node);
6434     }
6435   gtk_tree_path_free (path);
6436
6437   /* If we ran out of tree, and have extra area_below left, we need to add it
6438    * to area_above */
6439   if (area_below > 0)
6440     area_above += area_below;
6441
6442   _gtk_tree_view_find_node (tree_view, above_path, &tree, &node);
6443
6444   /* We walk backwards */
6445   while (area_above > 0)
6446     {
6447       _gtk_rbtree_prev_full (tree, node, &tree, &node);
6448
6449       /* Always find the new path in the tree.  We cannot just assume
6450        * a gtk_tree_path_prev() is enough here, as there might be children
6451        * in between this node and the previous sibling node.  If this
6452        * appears to be a performance hotspot in profiles, we can look into
6453        * intrigate logic for keeping path, node and iter in sync like
6454        * we do for forward walks.  (Which will be hard because of the lacking
6455        * iter_prev).
6456        */
6457
6458       if (node == NULL)
6459         break;
6460
6461       gtk_tree_path_free (above_path);
6462       above_path = _gtk_tree_view_find_path (tree_view, tree, node);
6463
6464       gtk_tree_model_get_iter (tree_view->priv->model, &iter, above_path);
6465
6466       if (GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_INVALID) ||
6467           GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_COLUMN_INVALID))
6468         {
6469           _gtk_tree_view_queue_draw_node (tree_view, tree, node, NULL);
6470           if (validate_row (tree_view, tree, node, &iter, above_path))
6471             size_changed = TRUE;
6472         }
6473       area_above -= gtk_tree_view_get_row_height (tree_view, node);
6474     }
6475
6476   /* if we scrolled to a path, we need to set the dy here,
6477    * and sync the top row accordingly
6478    */
6479   if (tree_view->priv->scroll_to_path)
6480     {
6481       gtk_tree_view_set_top_row (tree_view, above_path, -area_above);
6482       gtk_tree_view_top_row_to_dy (tree_view);
6483
6484       need_redraw = TRUE;
6485     }
6486   else if (tree_view->priv->height <= gtk_adjustment_get_page_size (tree_view->priv->vadjustment))
6487     {
6488       /* when we are not scrolling, we should never set dy to something
6489        * else than zero. we update top_row to be in sync with dy = 0.
6490        */
6491       gtk_adjustment_set_value (GTK_ADJUSTMENT (tree_view->priv->vadjustment), 0);
6492       gtk_tree_view_dy_to_top_row (tree_view);
6493     }
6494   else if (gtk_adjustment_get_value (tree_view->priv->vadjustment) + gtk_adjustment_get_page_size (tree_view->priv->vadjustment) > tree_view->priv->height)
6495     {
6496       gtk_adjustment_set_value (GTK_ADJUSTMENT (tree_view->priv->vadjustment), tree_view->priv->height - gtk_adjustment_get_page_size (tree_view->priv->vadjustment));
6497       gtk_tree_view_dy_to_top_row (tree_view);
6498     }
6499   else
6500     gtk_tree_view_top_row_to_dy (tree_view);
6501
6502   /* update width/height and queue a resize */
6503   if (size_changed)
6504     {
6505       GtkRequisition requisition;
6506
6507       /* We temporarily guess a size, under the assumption that it will be the
6508        * same when we get our next size_allocate.  If we don't do this, we'll be
6509        * in an inconsistent state if we call top_row_to_dy. */
6510
6511       gtk_widget_get_preferred_size (GTK_WIDGET (tree_view),
6512                                      &requisition, NULL);
6513       gtk_adjustment_set_upper (tree_view->priv->hadjustment,
6514                                 MAX (gtk_adjustment_get_upper (tree_view->priv->hadjustment), requisition.width));
6515       gtk_adjustment_set_upper (tree_view->priv->vadjustment,
6516                                 MAX (gtk_adjustment_get_upper (tree_view->priv->vadjustment), requisition.height));
6517       gtk_widget_queue_resize (GTK_WIDGET (tree_view));
6518     }
6519
6520   if (tree_view->priv->scroll_to_path)
6521     {
6522       gtk_tree_row_reference_free (tree_view->priv->scroll_to_path);
6523       tree_view->priv->scroll_to_path = NULL;
6524     }
6525
6526   if (above_path)
6527     gtk_tree_path_free (above_path);
6528
6529   if (tree_view->priv->scroll_to_column)
6530     {
6531       tree_view->priv->scroll_to_column = NULL;
6532     }
6533   if (need_redraw)
6534     gtk_widget_queue_draw (GTK_WIDGET (tree_view));
6535 }
6536
6537 static void
6538 initialize_fixed_height_mode (GtkTreeView *tree_view)
6539 {
6540   if (!tree_view->priv->tree)
6541     return;
6542
6543   if (tree_view->priv->fixed_height < 0)
6544     {
6545       GtkTreeIter iter;
6546       GtkTreePath *path;
6547
6548       GtkRBTree *tree = NULL;
6549       GtkRBNode *node = NULL;
6550
6551       tree = tree_view->priv->tree;
6552       node = tree->root;
6553
6554       path = _gtk_tree_view_find_path (tree_view, tree, node);
6555       gtk_tree_model_get_iter (tree_view->priv->model, &iter, path);
6556
6557       validate_row (tree_view, tree, node, &iter, path);
6558
6559       gtk_tree_path_free (path);
6560
6561       tree_view->priv->fixed_height = gtk_tree_view_get_row_height (tree_view, node);
6562     }
6563
6564    _gtk_rbtree_set_fixed_height (tree_view->priv->tree,
6565                                  tree_view->priv->fixed_height, TRUE);
6566 }
6567
6568 /* Our strategy for finding nodes to validate is a little convoluted.  We find
6569  * the left-most uninvalidated node.  We then try walking right, validating
6570  * nodes.  Once we find a valid node, we repeat the previous process of finding
6571  * the first invalid node.
6572  */
6573
6574 static gboolean
6575 do_validate_rows (GtkTreeView *tree_view, gboolean queue_resize)
6576 {
6577   GtkRBTree *tree = NULL;
6578   GtkRBNode *node = NULL;
6579   gboolean validated_area = FALSE;
6580   gint retval = TRUE;
6581   GtkTreePath *path = NULL;
6582   GtkTreeIter iter;
6583   GTimer *timer;
6584   gint i = 0;
6585
6586   gint y = -1;
6587   gint prev_height = -1;
6588   gboolean fixed_height = TRUE;
6589
6590   g_assert (tree_view);
6591
6592   if (tree_view->priv->tree == NULL)
6593       return FALSE;
6594
6595   if (tree_view->priv->fixed_height_mode)
6596     {
6597       if (tree_view->priv->fixed_height < 0)
6598         initialize_fixed_height_mode (tree_view);
6599
6600       return FALSE;
6601     }
6602
6603   timer = g_timer_new ();
6604   g_timer_start (timer);
6605
6606   do
6607     {
6608       gboolean changed = FALSE;
6609
6610       if (! GTK_RBNODE_FLAG_SET (tree_view->priv->tree->root, GTK_RBNODE_DESCENDANTS_INVALID))
6611         {
6612           retval = FALSE;
6613           goto done;
6614         }
6615
6616       if (path != NULL)
6617         {
6618           node = _gtk_rbtree_next (tree, node);
6619           if (node != NULL)
6620             {
6621               TREE_VIEW_INTERNAL_ASSERT (gtk_tree_model_iter_next (tree_view->priv->model, &iter), FALSE);
6622               gtk_tree_path_next (path);
6623             }
6624           else
6625             {
6626               gtk_tree_path_free (path);
6627               path = NULL;
6628             }
6629         }
6630
6631       if (path == NULL)
6632         {
6633           tree = tree_view->priv->tree;
6634           node = tree_view->priv->tree->root;
6635
6636           g_assert (GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_DESCENDANTS_INVALID));
6637
6638           do
6639             {
6640               if (node->left != tree->nil &&
6641                   GTK_RBNODE_FLAG_SET (node->left, GTK_RBNODE_DESCENDANTS_INVALID))
6642                 {
6643                   node = node->left;
6644                 }
6645               else if (node->right != tree->nil &&
6646                        GTK_RBNODE_FLAG_SET (node->right, GTK_RBNODE_DESCENDANTS_INVALID))
6647                 {
6648                   node = node->right;
6649                 }
6650               else if (GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_INVALID) ||
6651                        GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_COLUMN_INVALID))
6652                 {
6653                   break;
6654                 }
6655               else if (node->children != NULL)
6656                 {
6657                   tree = node->children;
6658                   node = tree->root;
6659                 }
6660               else
6661                 /* RBTree corruption!  All bad */
6662                 g_assert_not_reached ();
6663             }
6664           while (TRUE);
6665           path = _gtk_tree_view_find_path (tree_view, tree, node);
6666           gtk_tree_model_get_iter (tree_view->priv->model, &iter, path);
6667         }
6668
6669       changed = validate_row (tree_view, tree, node, &iter, path);
6670       validated_area = changed || validated_area;
6671
6672       if (changed)
6673         {
6674           gint offset = gtk_tree_view_get_row_y_offset (tree_view, tree, node);
6675
6676           if (y == -1 || y > offset)
6677             y = offset;
6678         }
6679
6680       if (!tree_view->priv->fixed_height_check)
6681         {
6682           gint height;
6683
6684           height = gtk_tree_view_get_row_height (tree_view, node);
6685           if (prev_height < 0)
6686             prev_height = height;
6687           else if (prev_height != height)
6688             fixed_height = FALSE;
6689         }
6690
6691       i++;
6692     }
6693   while (g_timer_elapsed (timer, NULL) < GTK_TREE_VIEW_TIME_MS_PER_IDLE / 1000.);
6694
6695   if (!tree_view->priv->fixed_height_check)
6696    {
6697      if (fixed_height)
6698        _gtk_rbtree_set_fixed_height (tree_view->priv->tree, prev_height, FALSE);
6699
6700      tree_view->priv->fixed_height_check = 1;
6701    }
6702
6703  done:
6704   if (validated_area)
6705     {
6706       GtkRequisition requisition;
6707
6708       /* We temporarily guess a size, under the assumption that it will be the
6709        * same when we get our next size_allocate.  If we don't do this, we'll be
6710        * in an inconsistent state when we call top_row_to_dy. */
6711
6712       /* FIXME: This is called from size_request, for some reason it is not infinitely
6713        * recursing, we cannot call gtk_widget_get_preferred_size() here because that's
6714        * not allowed (from inside ->get_preferred_width/height() implementations, one
6715        * should call the vfuncs directly). However what is desired here is the full
6716        * size including any margins and limited by any alignment (i.e. after
6717        * GtkWidget:adjust_size_request() is called).
6718        *
6719        * Currently bypassing this but the real solution is to not update the scroll adjustments
6720        * untill we've recieved an allocation (never update scroll adjustments from size-requests).
6721        */
6722       gtk_tree_view_size_request (GTK_WIDGET (tree_view), &requisition, FALSE);
6723
6724       /* If rows above the current position have changed height, this has
6725        * affected the current view and thus needs a redraw.
6726        */
6727       if (y != -1 && y < gtk_adjustment_get_value (tree_view->priv->vadjustment))
6728         gtk_widget_queue_draw (GTK_WIDGET (tree_view));
6729
6730       gtk_adjustment_set_upper (tree_view->priv->hadjustment,
6731                                 MAX (gtk_adjustment_get_upper (tree_view->priv->hadjustment), requisition.width));
6732       gtk_adjustment_set_upper (tree_view->priv->vadjustment,
6733                                 MAX (gtk_adjustment_get_upper (tree_view->priv->vadjustment), requisition.height));
6734
6735       if (queue_resize)
6736         gtk_widget_queue_resize_no_redraw (GTK_WIDGET (tree_view));
6737     }
6738
6739   if (path) gtk_tree_path_free (path);
6740   g_timer_destroy (timer);
6741
6742   return retval;
6743 }
6744
6745 static gboolean
6746 validate_rows (GtkTreeView *tree_view)
6747 {
6748   gboolean retval;
6749
6750   retval = do_validate_rows (tree_view, TRUE);
6751
6752   if (! retval && tree_view->priv->validate_rows_timer)
6753     {
6754       g_source_remove (tree_view->priv->validate_rows_timer);
6755       tree_view->priv->validate_rows_timer = 0;
6756     }
6757
6758   return retval;
6759 }
6760
6761 static gboolean
6762 validate_rows_handler (GtkTreeView *tree_view)
6763 {
6764   gboolean retval;
6765
6766   retval = do_validate_rows (tree_view, TRUE);
6767   if (! retval && tree_view->priv->validate_rows_timer)
6768     {
6769       g_source_remove (tree_view->priv->validate_rows_timer);
6770       tree_view->priv->validate_rows_timer = 0;
6771     }
6772
6773   return retval;
6774 }
6775
6776 static gboolean
6777 do_presize_handler (GtkTreeView *tree_view)
6778 {
6779   if (tree_view->priv->mark_rows_col_dirty)
6780     {
6781       if (tree_view->priv->tree)
6782         _gtk_rbtree_column_invalid (tree_view->priv->tree);
6783       tree_view->priv->mark_rows_col_dirty = FALSE;
6784     }
6785   validate_visible_area (tree_view);
6786   tree_view->priv->presize_handler_timer = 0;
6787
6788   if (tree_view->priv->fixed_height_mode)
6789     {
6790       GtkRequisition requisition;
6791
6792       gtk_widget_get_preferred_size (GTK_WIDGET (tree_view),
6793                                      &requisition, NULL);
6794
6795       gtk_adjustment_set_upper (tree_view->priv->hadjustment,
6796                                 MAX (gtk_adjustment_get_upper (tree_view->priv->hadjustment), requisition.width));
6797       gtk_adjustment_set_upper (tree_view->priv->vadjustment,
6798                                 MAX (gtk_adjustment_get_upper (tree_view->priv->vadjustment), requisition.height));
6799       gtk_widget_queue_resize (GTK_WIDGET (tree_view));
6800     }
6801
6802   return FALSE;
6803 }
6804
6805 static gboolean
6806 presize_handler_callback (gpointer data)
6807 {
6808   do_presize_handler (GTK_TREE_VIEW (data));
6809
6810   return FALSE;
6811 }
6812
6813 static void
6814 install_presize_handler (GtkTreeView *tree_view)
6815 {
6816   if (! gtk_widget_get_realized (GTK_WIDGET (tree_view)))
6817     return;
6818
6819   if (! tree_view->priv->presize_handler_timer)
6820     {
6821       tree_view->priv->presize_handler_timer =
6822         gdk_threads_add_idle_full (GTK_PRIORITY_RESIZE - 2, presize_handler_callback, tree_view, NULL);
6823     }
6824   if (! tree_view->priv->validate_rows_timer)
6825     {
6826       tree_view->priv->validate_rows_timer =
6827         gdk_threads_add_idle_full (GTK_TREE_VIEW_PRIORITY_VALIDATE, (GSourceFunc) validate_rows_handler, tree_view, NULL);
6828     }
6829 }
6830
6831 static void
6832 gtk_tree_view_bin_process_updates (GtkTreeView *tree_view)
6833 {
6834   /* Prior to drawing, we make sure the visible area is validated. */
6835   if (tree_view->priv->presize_handler_timer)
6836     {
6837       g_source_remove (tree_view->priv->presize_handler_timer);
6838       tree_view->priv->presize_handler_timer = 0;
6839
6840       do_presize_handler (tree_view);
6841     }
6842
6843   gdk_window_process_updates (tree_view->priv->bin_window, TRUE);
6844 }
6845
6846 static gboolean
6847 scroll_sync_handler (GtkTreeView *tree_view)
6848 {
6849   if (tree_view->priv->height <= gtk_adjustment_get_page_size (tree_view->priv->vadjustment))
6850     gtk_adjustment_set_value (GTK_ADJUSTMENT (tree_view->priv->vadjustment), 0);
6851   else if (gtk_tree_row_reference_valid (tree_view->priv->top_row))
6852     gtk_tree_view_top_row_to_dy (tree_view);
6853   else
6854     gtk_tree_view_dy_to_top_row (tree_view);
6855
6856   tree_view->priv->scroll_sync_timer = 0;
6857
6858   return FALSE;
6859 }
6860
6861 static void
6862 install_scroll_sync_handler (GtkTreeView *tree_view)
6863 {
6864   if (!gtk_widget_get_realized (GTK_WIDGET (tree_view)))
6865     return;
6866
6867   if (!tree_view->priv->scroll_sync_timer)
6868     {
6869       tree_view->priv->scroll_sync_timer =
6870         gdk_threads_add_idle_full (GTK_TREE_VIEW_PRIORITY_SCROLL_SYNC, (GSourceFunc) scroll_sync_handler, tree_view, NULL);
6871     }
6872 }
6873
6874 static void
6875 gtk_tree_view_set_top_row (GtkTreeView *tree_view,
6876                            GtkTreePath *path,
6877                            gint         offset)
6878 {
6879   gtk_tree_row_reference_free (tree_view->priv->top_row);
6880
6881   if (!path)
6882     {
6883       tree_view->priv->top_row = NULL;
6884       tree_view->priv->top_row_dy = 0;
6885     }
6886   else
6887     {
6888       tree_view->priv->top_row = gtk_tree_row_reference_new_proxy (G_OBJECT (tree_view), tree_view->priv->model, path);
6889       tree_view->priv->top_row_dy = offset;
6890     }
6891 }
6892
6893 /* Always call this iff dy is in the visible range.  If the tree is empty, then
6894  * it's set to be NULL, and top_row_dy is 0;
6895  */
6896 static void
6897 gtk_tree_view_dy_to_top_row (GtkTreeView *tree_view)
6898 {
6899   gint offset;
6900   GtkTreePath *path;
6901   GtkRBTree *tree;
6902   GtkRBNode *node;
6903
6904   if (tree_view->priv->tree == NULL)
6905     {
6906       gtk_tree_view_set_top_row (tree_view, NULL, 0);
6907     }
6908   else
6909     {
6910       offset = _gtk_rbtree_find_offset (tree_view->priv->tree,
6911                                         tree_view->priv->dy,
6912                                         &tree, &node);
6913
6914       if (tree == NULL)
6915         {
6916           gtk_tree_view_set_top_row (tree_view, NULL, 0);
6917         }
6918       else
6919         {
6920           path = _gtk_tree_view_find_path (tree_view, tree, node);
6921           gtk_tree_view_set_top_row (tree_view, path, offset);
6922           gtk_tree_path_free (path);
6923         }
6924     }
6925 }
6926
6927 static void
6928 gtk_tree_view_top_row_to_dy (GtkTreeView *tree_view)
6929 {
6930   GtkTreePath *path;
6931   GtkRBTree *tree;
6932   GtkRBNode *node;
6933   int new_dy;
6934
6935   /* Avoid recursive calls */
6936   if (tree_view->priv->in_top_row_to_dy)
6937     return;
6938
6939   if (tree_view->priv->top_row)
6940     path = gtk_tree_row_reference_get_path (tree_view->priv->top_row);
6941   else
6942     path = NULL;
6943
6944   if (!path)
6945     tree = NULL;
6946   else
6947     _gtk_tree_view_find_node (tree_view, path, &tree, &node);
6948
6949   if (path)
6950     gtk_tree_path_free (path);
6951
6952   if (tree == NULL)
6953     {
6954       /* keep dy and set new toprow */
6955       gtk_tree_row_reference_free (tree_view->priv->top_row);
6956       tree_view->priv->top_row = NULL;
6957       tree_view->priv->top_row_dy = 0;
6958       /* DO NOT install the idle handler */
6959       gtk_tree_view_dy_to_top_row (tree_view);
6960       return;
6961     }
6962
6963   if (gtk_tree_view_get_row_height (tree_view, node)
6964       < tree_view->priv->top_row_dy)
6965     {
6966       /* new top row -- do NOT install the idle handler */
6967       gtk_tree_view_dy_to_top_row (tree_view);
6968       return;
6969     }
6970
6971   new_dy = _gtk_rbtree_node_find_offset (tree, node);
6972   new_dy += tree_view->priv->top_row_dy;
6973
6974   if (new_dy + gtk_adjustment_get_page_size (tree_view->priv->vadjustment) > tree_view->priv->height)
6975     new_dy = tree_view->priv->height - gtk_adjustment_get_page_size (tree_view->priv->vadjustment);
6976
6977   new_dy = MAX (0, new_dy);
6978
6979   tree_view->priv->in_top_row_to_dy = TRUE;
6980   gtk_adjustment_set_value (tree_view->priv->vadjustment, (gdouble)new_dy);
6981   tree_view->priv->in_top_row_to_dy = FALSE;
6982 }
6983
6984
6985 void
6986 _gtk_tree_view_install_mark_rows_col_dirty (GtkTreeView *tree_view,
6987                                             gboolean     install_handler)
6988 {
6989   tree_view->priv->mark_rows_col_dirty = TRUE;
6990
6991   if (install_handler)
6992     install_presize_handler (tree_view);
6993 }
6994
6995 /*
6996  * This function works synchronously (due to the while (validate_rows...)
6997  * loop).
6998  *
6999  * There was a check for column_type != GTK_TREE_VIEW_COLUMN_AUTOSIZE
7000  * here. You now need to check that yourself.
7001  */
7002 void
7003 _gtk_tree_view_column_autosize (GtkTreeView *tree_view,
7004                                 GtkTreeViewColumn *column)
7005 {
7006   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
7007   g_return_if_fail (GTK_IS_TREE_VIEW_COLUMN (column));
7008
7009   _gtk_tree_view_column_cell_set_dirty (column, FALSE);
7010
7011   do_presize_handler (tree_view);
7012   while (validate_rows (tree_view));
7013
7014   gtk_widget_queue_resize (GTK_WIDGET (tree_view));
7015 }
7016
7017 /* Drag-and-drop */
7018
7019 static void
7020 set_source_row (GdkDragContext *context,
7021                 GtkTreeModel   *model,
7022                 GtkTreePath    *source_row)
7023 {
7024   g_object_set_data_full (G_OBJECT (context),
7025                           I_("gtk-tree-view-source-row"),
7026                           source_row ? gtk_tree_row_reference_new (model, source_row) : NULL,
7027                           (GDestroyNotify) (source_row ? gtk_tree_row_reference_free : NULL));
7028 }
7029
7030 static GtkTreePath*
7031 get_source_row (GdkDragContext *context)
7032 {
7033   GtkTreeRowReference *ref =
7034     g_object_get_data (G_OBJECT (context), "gtk-tree-view-source-row");
7035
7036   if (ref)
7037     return gtk_tree_row_reference_get_path (ref);
7038   else
7039     return NULL;
7040 }
7041
7042 typedef struct
7043 {
7044   GtkTreeRowReference *dest_row;
7045   guint                path_down_mode   : 1;
7046   guint                empty_view_drop  : 1;
7047   guint                drop_append_mode : 1;
7048 }
7049 DestRow;
7050
7051 static void
7052 dest_row_free (gpointer data)
7053 {
7054   DestRow *dr = (DestRow *)data;
7055
7056   gtk_tree_row_reference_free (dr->dest_row);
7057   g_slice_free (DestRow, dr);
7058 }
7059
7060 static void
7061 set_dest_row (GdkDragContext *context,
7062               GtkTreeModel   *model,
7063               GtkTreePath    *dest_row,
7064               gboolean        path_down_mode,
7065               gboolean        empty_view_drop,
7066               gboolean        drop_append_mode)
7067 {
7068   DestRow *dr;
7069
7070   if (!dest_row)
7071     {
7072       g_object_set_data_full (G_OBJECT (context), I_("gtk-tree-view-dest-row"),
7073                               NULL, NULL);
7074       return;
7075     }
7076
7077   dr = g_slice_new (DestRow);
7078
7079   dr->dest_row = gtk_tree_row_reference_new (model, dest_row);
7080   dr->path_down_mode = path_down_mode != FALSE;
7081   dr->empty_view_drop = empty_view_drop != FALSE;
7082   dr->drop_append_mode = drop_append_mode != FALSE;
7083
7084   g_object_set_data_full (G_OBJECT (context), I_("gtk-tree-view-dest-row"),
7085                           dr, (GDestroyNotify) dest_row_free);
7086 }
7087
7088 static GtkTreePath*
7089 get_dest_row (GdkDragContext *context,
7090               gboolean       *path_down_mode)
7091 {
7092   DestRow *dr =
7093     g_object_get_data (G_OBJECT (context), "gtk-tree-view-dest-row");
7094
7095   if (dr)
7096     {
7097       GtkTreePath *path = NULL;
7098
7099       if (path_down_mode)
7100         *path_down_mode = dr->path_down_mode;
7101
7102       if (dr->dest_row)
7103         path = gtk_tree_row_reference_get_path (dr->dest_row);
7104       else if (dr->empty_view_drop)
7105         path = gtk_tree_path_new_from_indices (0, -1);
7106       else
7107         path = NULL;
7108
7109       if (path && dr->drop_append_mode)
7110         gtk_tree_path_next (path);
7111
7112       return path;
7113     }
7114   else
7115     return NULL;
7116 }
7117
7118 /* Get/set whether drag_motion requested the drag data and
7119  * drag_data_received should thus not actually insert the data,
7120  * since the data doesn't result from a drop.
7121  */
7122 static void
7123 set_status_pending (GdkDragContext *context,
7124                     GdkDragAction   suggested_action)
7125 {
7126   g_object_set_data (G_OBJECT (context),
7127                      I_("gtk-tree-view-status-pending"),
7128                      GINT_TO_POINTER (suggested_action));
7129 }
7130
7131 static GdkDragAction
7132 get_status_pending (GdkDragContext *context)
7133 {
7134   return GPOINTER_TO_INT (g_object_get_data (G_OBJECT (context),
7135                                              "gtk-tree-view-status-pending"));
7136 }
7137
7138 static TreeViewDragInfo*
7139 get_info (GtkTreeView *tree_view)
7140 {
7141   return g_object_get_data (G_OBJECT (tree_view), "gtk-tree-view-drag-info");
7142 }
7143
7144 static void
7145 destroy_info (TreeViewDragInfo *di)
7146 {
7147   g_slice_free (TreeViewDragInfo, di);
7148 }
7149
7150 static TreeViewDragInfo*
7151 ensure_info (GtkTreeView *tree_view)
7152 {
7153   TreeViewDragInfo *di;
7154
7155   di = get_info (tree_view);
7156
7157   if (di == NULL)
7158     {
7159       di = g_slice_new0 (TreeViewDragInfo);
7160
7161       g_object_set_data_full (G_OBJECT (tree_view),
7162                               I_("gtk-tree-view-drag-info"),
7163                               di,
7164                               (GDestroyNotify) destroy_info);
7165     }
7166
7167   return di;
7168 }
7169
7170 static void
7171 remove_info (GtkTreeView *tree_view)
7172 {
7173   g_object_set_data (G_OBJECT (tree_view), I_("gtk-tree-view-drag-info"), NULL);
7174 }
7175
7176 #if 0
7177 static gint
7178 drag_scan_timeout (gpointer data)
7179 {
7180   GtkTreeView *tree_view;
7181   gint x, y;
7182   GdkModifierType state;
7183   GtkTreePath *path = NULL;
7184   GtkTreeViewColumn *column = NULL;
7185   GdkRectangle visible_rect;
7186
7187   GDK_THREADS_ENTER ();
7188
7189   tree_view = GTK_TREE_VIEW (data);
7190
7191   gdk_window_get_device_position (tree_view->priv->bin_window,
7192                                   gdk_device_manager_get_client_pointer (
7193                                     gdk_display_get_device_manager (
7194                                       gtk_widget_get_display (GTK_WIDGET (tree_view)))),
7195                                   &x, &y, &state);
7196
7197   gtk_tree_view_get_visible_rect (tree_view, &visible_rect);
7198
7199   /* See if we are near the edge. */
7200   if ((x - visible_rect.x) < SCROLL_EDGE_SIZE ||
7201       (visible_rect.x + visible_rect.width - x) < SCROLL_EDGE_SIZE ||
7202       (y - visible_rect.y) < SCROLL_EDGE_SIZE ||
7203       (visible_rect.y + visible_rect.height - y) < SCROLL_EDGE_SIZE)
7204     {
7205       gtk_tree_view_get_path_at_pos (tree_view,
7206                                      tree_view->priv->bin_window,
7207                                      x, y,
7208                                      &path,
7209                                      &column,
7210                                      NULL,
7211                                      NULL);
7212
7213       if (path != NULL)
7214         {
7215           gtk_tree_view_scroll_to_cell (tree_view,
7216                                         path,
7217                                         column,
7218                                         TRUE,
7219                                         0.5, 0.5);
7220
7221           gtk_tree_path_free (path);
7222         }
7223     }
7224
7225   GDK_THREADS_LEAVE ();
7226
7227   return TRUE;
7228 }
7229 #endif /* 0 */
7230
7231 static void
7232 add_scroll_timeout (GtkTreeView *tree_view)
7233 {
7234   if (tree_view->priv->scroll_timeout == 0)
7235     {
7236       tree_view->priv->scroll_timeout =
7237         gdk_threads_add_timeout (150, scroll_row_timeout, tree_view);
7238     }
7239 }
7240
7241 static void
7242 remove_scroll_timeout (GtkTreeView *tree_view)
7243 {
7244   if (tree_view->priv->scroll_timeout != 0)
7245     {
7246       g_source_remove (tree_view->priv->scroll_timeout);
7247       tree_view->priv->scroll_timeout = 0;
7248     }
7249 }
7250
7251 static gboolean
7252 check_model_dnd (GtkTreeModel *model,
7253                  GType         required_iface,
7254                  const gchar  *signal)
7255 {
7256   if (model == NULL || !G_TYPE_CHECK_INSTANCE_TYPE ((model), required_iface))
7257     {
7258       g_warning ("You must override the default '%s' handler "
7259                  "on GtkTreeView when using models that don't support "
7260                  "the %s interface and enabling drag-and-drop. The simplest way to do this "
7261                  "is to connect to '%s' and call "
7262                  "g_signal_stop_emission_by_name() in your signal handler to prevent "
7263                  "the default handler from running. Look at the source code "
7264                  "for the default handler in gtktreeview.c to get an idea what "
7265                  "your handler should do. (gtktreeview.c is in the GTK source "
7266                  "code.) If you're using GTK from a language other than C, "
7267                  "there may be a more natural way to override default handlers, e.g. via derivation.",
7268                  signal, g_type_name (required_iface), signal);
7269       return FALSE;
7270     }
7271   else
7272     return TRUE;
7273 }
7274
7275 static void
7276 remove_open_timeout (GtkTreeView *tree_view)
7277 {
7278   if (tree_view->priv->open_dest_timeout != 0)
7279     {
7280       g_source_remove (tree_view->priv->open_dest_timeout);
7281       tree_view->priv->open_dest_timeout = 0;
7282     }
7283 }
7284
7285
7286 static gint
7287 open_row_timeout (gpointer data)
7288 {
7289   GtkTreeView *tree_view = data;
7290   GtkTreePath *dest_path = NULL;
7291   GtkTreeViewDropPosition pos;
7292   gboolean result = FALSE;
7293
7294   gtk_tree_view_get_drag_dest_row (tree_view,
7295                                    &dest_path,
7296                                    &pos);
7297
7298   if (dest_path &&
7299       (pos == GTK_TREE_VIEW_DROP_INTO_OR_AFTER ||
7300        pos == GTK_TREE_VIEW_DROP_INTO_OR_BEFORE))
7301     {
7302       gtk_tree_view_expand_row (tree_view, dest_path, FALSE);
7303       tree_view->priv->open_dest_timeout = 0;
7304
7305       gtk_tree_path_free (dest_path);
7306     }
7307   else
7308     {
7309       if (dest_path)
7310         gtk_tree_path_free (dest_path);
7311
7312       result = TRUE;
7313     }
7314
7315   return result;
7316 }
7317
7318 static gboolean
7319 scroll_row_timeout (gpointer data)
7320 {
7321   GtkTreeView *tree_view = data;
7322
7323   gtk_tree_view_vertical_autoscroll (tree_view);
7324
7325   if (tree_view->priv->rubber_band_status == RUBBER_BAND_ACTIVE)
7326     gtk_tree_view_update_rubber_band (tree_view);
7327
7328   return TRUE;
7329 }
7330
7331 /* Returns TRUE if event should not be propagated to parent widgets */
7332 static gboolean
7333 set_destination_row (GtkTreeView    *tree_view,
7334                      GdkDragContext *context,
7335                      /* coordinates relative to the widget */
7336                      gint            x,
7337                      gint            y,
7338                      GdkDragAction  *suggested_action,
7339                      GdkAtom        *target)
7340 {
7341   GtkTreePath *path = NULL;
7342   GtkTreeViewDropPosition pos;
7343   GtkTreeViewDropPosition old_pos;
7344   TreeViewDragInfo *di;
7345   GtkWidget *widget;
7346   GtkTreePath *old_dest_path = NULL;
7347   gboolean can_drop = FALSE;
7348
7349   *suggested_action = 0;
7350   *target = GDK_NONE;
7351
7352   widget = GTK_WIDGET (tree_view);
7353
7354   di = get_info (tree_view);
7355
7356   if (di == NULL || y - gtk_tree_view_get_effective_header_height (tree_view) < 0)
7357     {
7358       /* someone unset us as a drag dest, note that if
7359        * we return FALSE drag_leave isn't called
7360        */
7361
7362       gtk_tree_view_set_drag_dest_row (tree_view,
7363                                        NULL,
7364                                        GTK_TREE_VIEW_DROP_BEFORE);
7365
7366       remove_scroll_timeout (GTK_TREE_VIEW (widget));
7367       remove_open_timeout (GTK_TREE_VIEW (widget));
7368
7369       return FALSE; /* no longer a drop site */
7370     }
7371
7372   *target = gtk_drag_dest_find_target (widget, context,
7373                                        gtk_drag_dest_get_target_list (widget));
7374   if (*target == GDK_NONE)
7375     {
7376       return FALSE;
7377     }
7378
7379   if (!gtk_tree_view_get_dest_row_at_pos (tree_view,
7380                                           x, y,
7381                                           &path,
7382                                           &pos))
7383     {
7384       gint n_children;
7385       GtkTreeModel *model;
7386
7387       remove_open_timeout (tree_view);
7388
7389       /* the row got dropped on empty space, let's setup a special case
7390        */
7391
7392       if (path)
7393         gtk_tree_path_free (path);
7394
7395       model = gtk_tree_view_get_model (tree_view);
7396
7397       n_children = gtk_tree_model_iter_n_children (model, NULL);
7398       if (n_children)
7399         {
7400           pos = GTK_TREE_VIEW_DROP_AFTER;
7401           path = gtk_tree_path_new_from_indices (n_children - 1, -1);
7402         }
7403       else
7404         {
7405           pos = GTK_TREE_VIEW_DROP_BEFORE;
7406           path = gtk_tree_path_new_from_indices (0, -1);
7407         }
7408
7409       can_drop = TRUE;
7410
7411       goto out;
7412     }
7413
7414   g_assert (path);
7415
7416   /* If we left the current row's "open" zone, unset the timeout for
7417    * opening the row
7418    */
7419   gtk_tree_view_get_drag_dest_row (tree_view,
7420                                    &old_dest_path,
7421                                    &old_pos);
7422
7423   if (old_dest_path &&
7424       (gtk_tree_path_compare (path, old_dest_path) != 0 ||
7425        !(pos == GTK_TREE_VIEW_DROP_INTO_OR_AFTER ||
7426          pos == GTK_TREE_VIEW_DROP_INTO_OR_BEFORE)))
7427     remove_open_timeout (tree_view);
7428
7429   if (old_dest_path)
7430     gtk_tree_path_free (old_dest_path);
7431
7432   if (TRUE /* FIXME if the location droppable predicate */)
7433     {
7434       can_drop = TRUE;
7435     }
7436
7437 out:
7438   if (can_drop)
7439     {
7440       GtkWidget *source_widget;
7441
7442       *suggested_action = gdk_drag_context_get_suggested_action (context);
7443       source_widget = gtk_drag_get_source_widget (context);
7444
7445       if (source_widget == widget)
7446         {
7447           /* Default to MOVE, unless the user has
7448            * pressed ctrl or shift to affect available actions
7449            */
7450           if ((gdk_drag_context_get_actions (context) & GDK_ACTION_MOVE) != 0)
7451             *suggested_action = GDK_ACTION_MOVE;
7452         }
7453
7454       gtk_tree_view_set_drag_dest_row (GTK_TREE_VIEW (widget),
7455                                        path, pos);
7456     }
7457   else
7458     {
7459       /* can't drop here */
7460       remove_open_timeout (tree_view);
7461
7462       gtk_tree_view_set_drag_dest_row (GTK_TREE_VIEW (widget),
7463                                        NULL,
7464                                        GTK_TREE_VIEW_DROP_BEFORE);
7465     }
7466
7467   if (path)
7468     gtk_tree_path_free (path);
7469
7470   return TRUE;
7471 }
7472
7473 static GtkTreePath*
7474 get_logical_dest_row (GtkTreeView *tree_view,
7475                       gboolean    *path_down_mode,
7476                       gboolean    *drop_append_mode)
7477 {
7478   /* adjust path to point to the row the drop goes in front of */
7479   GtkTreePath *path = NULL;
7480   GtkTreeViewDropPosition pos;
7481
7482   g_return_val_if_fail (path_down_mode != NULL, NULL);
7483   g_return_val_if_fail (drop_append_mode != NULL, NULL);
7484
7485   *path_down_mode = FALSE;
7486   *drop_append_mode = 0;
7487
7488   gtk_tree_view_get_drag_dest_row (tree_view, &path, &pos);
7489
7490   if (path == NULL)
7491     return NULL;
7492
7493   if (pos == GTK_TREE_VIEW_DROP_BEFORE)
7494     ; /* do nothing */
7495   else if (pos == GTK_TREE_VIEW_DROP_INTO_OR_BEFORE ||
7496            pos == GTK_TREE_VIEW_DROP_INTO_OR_AFTER)
7497     *path_down_mode = TRUE;
7498   else
7499     {
7500       GtkTreeIter iter;
7501       GtkTreeModel *model = gtk_tree_view_get_model (tree_view);
7502
7503       g_assert (pos == GTK_TREE_VIEW_DROP_AFTER);
7504
7505       if (!gtk_tree_model_get_iter (model, &iter, path) ||
7506           !gtk_tree_model_iter_next (model, &iter))
7507         *drop_append_mode = 1;
7508       else
7509         {
7510           *drop_append_mode = 0;
7511           gtk_tree_path_next (path);
7512         }
7513     }
7514
7515   return path;
7516 }
7517
7518 static gboolean
7519 gtk_tree_view_maybe_begin_dragging_row (GtkTreeView      *tree_view,
7520                                         GdkEventMotion   *event)
7521 {
7522   GtkWidget *widget = GTK_WIDGET (tree_view);
7523   GdkDragContext *context;
7524   TreeViewDragInfo *di;
7525   GtkTreePath *path = NULL;
7526   gint button;
7527   gint cell_x, cell_y;
7528   GtkTreeModel *model;
7529   gboolean retval = FALSE;
7530
7531   di = get_info (tree_view);
7532
7533   if (di == NULL || !di->source_set)
7534     goto out;
7535
7536   if (tree_view->priv->pressed_button < 0)
7537     goto out;
7538
7539   if (!gtk_drag_check_threshold (widget,
7540                                  tree_view->priv->press_start_x,
7541                                  tree_view->priv->press_start_y,
7542                                  event->x, event->y))
7543     goto out;
7544
7545   model = gtk_tree_view_get_model (tree_view);
7546
7547   if (model == NULL)
7548     goto out;
7549
7550   button = tree_view->priv->pressed_button;
7551   tree_view->priv->pressed_button = -1;
7552
7553   gtk_tree_view_get_path_at_pos (tree_view,
7554                                  tree_view->priv->press_start_x,
7555                                  tree_view->priv->press_start_y,
7556                                  &path,
7557                                  NULL,
7558                                  &cell_x,
7559                                  &cell_y);
7560
7561   if (path == NULL)
7562     goto out;
7563
7564   if (!GTK_IS_TREE_DRAG_SOURCE (model) ||
7565       !gtk_tree_drag_source_row_draggable (GTK_TREE_DRAG_SOURCE (model),
7566                                            path))
7567     goto out;
7568
7569   if (!(GDK_BUTTON1_MASK << (button - 1) & di->start_button_mask))
7570     goto out;
7571
7572   /* Now we can begin the drag */
7573
7574   retval = TRUE;
7575
7576   context = gtk_drag_begin (widget,
7577                             gtk_drag_source_get_target_list (widget),
7578                             di->source_actions,
7579                             button,
7580                             (GdkEvent*)event);
7581
7582   set_source_row (context, model, path);
7583
7584  out:
7585   if (path)
7586     gtk_tree_path_free (path);
7587
7588   return retval;
7589 }
7590
7591
7592 static void
7593 gtk_tree_view_drag_begin (GtkWidget      *widget,
7594                           GdkDragContext *context)
7595 {
7596   GtkTreeView *tree_view;
7597   GtkTreePath *path = NULL;
7598   gint cell_x, cell_y;
7599   cairo_surface_t *row_pix;
7600   TreeViewDragInfo *di;
7601
7602   tree_view = GTK_TREE_VIEW (widget);
7603
7604   /* if the user uses a custom DND source impl, we don't set the icon here */
7605   di = get_info (tree_view);
7606
7607   if (di == NULL || !di->source_set)
7608     return;
7609
7610   gtk_tree_view_get_path_at_pos (tree_view,
7611                                  tree_view->priv->press_start_x,
7612                                  tree_view->priv->press_start_y,
7613                                  &path,
7614                                  NULL,
7615                                  &cell_x,
7616                                  &cell_y);
7617
7618   /* If path is NULL, there's nothing we can drag.  For now, we silently
7619    * bail out.  Actually, dragging should not be possible from an empty
7620    * tree view, but there's no way we can cancel that from here.
7621    * Automatically unsetting the tree view as drag source for empty models
7622    * is something that would likely break other people's code ...
7623    */
7624   if (!path)
7625     return;
7626
7627   row_pix = gtk_tree_view_create_row_drag_icon (tree_view,
7628                                                 path);
7629   cairo_surface_set_device_offset (row_pix,
7630                                    /* the + 1 is for the black border in the icon */
7631                                    - (tree_view->priv->press_start_x + 1),
7632                                    - (cell_y + 1));
7633
7634   gtk_drag_set_icon_surface (context, row_pix);
7635
7636   cairo_surface_destroy (row_pix);
7637   gtk_tree_path_free (path);
7638 }
7639
7640 static void
7641 gtk_tree_view_drag_end (GtkWidget      *widget,
7642                         GdkDragContext *context)
7643 {
7644   /* do nothing */
7645 }
7646
7647 /* Default signal implementations for the drag signals */
7648 static void
7649 gtk_tree_view_drag_data_get (GtkWidget        *widget,
7650                              GdkDragContext   *context,
7651                              GtkSelectionData *selection_data,
7652                              guint             info,
7653                              guint             time)
7654 {
7655   GtkTreeView *tree_view;
7656   GtkTreeModel *model;
7657   TreeViewDragInfo *di;
7658   GtkTreePath *source_row;
7659
7660   tree_view = GTK_TREE_VIEW (widget);
7661
7662   model = gtk_tree_view_get_model (tree_view);
7663
7664   if (model == NULL)
7665     return;
7666
7667   di = get_info (GTK_TREE_VIEW (widget));
7668
7669   if (di == NULL)
7670     return;
7671
7672   source_row = get_source_row (context);
7673
7674   if (source_row == NULL)
7675     return;
7676
7677   /* We can implement the GTK_TREE_MODEL_ROW target generically for
7678    * any model; for DragSource models there are some other targets
7679    * we also support.
7680    */
7681
7682   if (GTK_IS_TREE_DRAG_SOURCE (model) &&
7683       gtk_tree_drag_source_drag_data_get (GTK_TREE_DRAG_SOURCE (model),
7684                                           source_row,
7685                                           selection_data))
7686     goto done;
7687
7688   /* If drag_data_get does nothing, try providing row data. */
7689   if (gtk_selection_data_get_target (selection_data) == gdk_atom_intern_static_string ("GTK_TREE_MODEL_ROW"))
7690     {
7691       gtk_tree_set_row_drag_data (selection_data,
7692                                   model,
7693                                   source_row);
7694     }
7695
7696  done:
7697   gtk_tree_path_free (source_row);
7698 }
7699
7700
7701 static void
7702 gtk_tree_view_drag_data_delete (GtkWidget      *widget,
7703                                 GdkDragContext *context)
7704 {
7705   TreeViewDragInfo *di;
7706   GtkTreeModel *model;
7707   GtkTreeView *tree_view;
7708   GtkTreePath *source_row;
7709
7710   tree_view = GTK_TREE_VIEW (widget);
7711   model = gtk_tree_view_get_model (tree_view);
7712
7713   if (!check_model_dnd (model, GTK_TYPE_TREE_DRAG_SOURCE, "drag_data_delete"))
7714     return;
7715
7716   di = get_info (tree_view);
7717
7718   if (di == NULL)
7719     return;
7720
7721   source_row = get_source_row (context);
7722
7723   if (source_row == NULL)
7724     return;
7725
7726   gtk_tree_drag_source_drag_data_delete (GTK_TREE_DRAG_SOURCE (model),
7727                                          source_row);
7728
7729   gtk_tree_path_free (source_row);
7730
7731   set_source_row (context, NULL, NULL);
7732 }
7733
7734 static void
7735 gtk_tree_view_drag_leave (GtkWidget      *widget,
7736                           GdkDragContext *context,
7737                           guint             time)
7738 {
7739   /* unset any highlight row */
7740   gtk_tree_view_set_drag_dest_row (GTK_TREE_VIEW (widget),
7741                                    NULL,
7742                                    GTK_TREE_VIEW_DROP_BEFORE);
7743
7744   remove_scroll_timeout (GTK_TREE_VIEW (widget));
7745   remove_open_timeout (GTK_TREE_VIEW (widget));
7746 }
7747
7748
7749 static gboolean
7750 gtk_tree_view_drag_motion (GtkWidget        *widget,
7751                            GdkDragContext   *context,
7752                            /* coordinates relative to the widget */
7753                            gint              x,
7754                            gint              y,
7755                            guint             time)
7756 {
7757   gboolean empty;
7758   GtkTreePath *path = NULL;
7759   GtkTreeViewDropPosition pos;
7760   GtkTreeView *tree_view;
7761   GdkDragAction suggested_action = 0;
7762   GdkAtom target;
7763
7764   tree_view = GTK_TREE_VIEW (widget);
7765
7766   if (!set_destination_row (tree_view, context, x, y, &suggested_action, &target))
7767     return FALSE;
7768
7769   gtk_tree_view_get_drag_dest_row (tree_view, &path, &pos);
7770
7771   /* we only know this *after* set_desination_row */
7772   empty = tree_view->priv->empty_view_drop;
7773
7774   if (path == NULL && !empty)
7775     {
7776       /* Can't drop here. */
7777       gdk_drag_status (context, 0, time);
7778     }
7779   else
7780     {
7781       if (tree_view->priv->open_dest_timeout == 0 &&
7782           (pos == GTK_TREE_VIEW_DROP_INTO_OR_AFTER ||
7783            pos == GTK_TREE_VIEW_DROP_INTO_OR_BEFORE))
7784         {
7785           tree_view->priv->open_dest_timeout =
7786             gdk_threads_add_timeout (AUTO_EXPAND_TIMEOUT, open_row_timeout, tree_view);
7787         }
7788       else
7789         {
7790           add_scroll_timeout (tree_view);
7791         }
7792
7793       if (target == gdk_atom_intern_static_string ("GTK_TREE_MODEL_ROW"))
7794         {
7795           /* Request data so we can use the source row when
7796            * determining whether to accept the drop
7797            */
7798           set_status_pending (context, suggested_action);
7799           gtk_drag_get_data (widget, context, target, time);
7800         }
7801       else
7802         {
7803           set_status_pending (context, 0);
7804           gdk_drag_status (context, suggested_action, time);
7805         }
7806     }
7807
7808   if (path)
7809     gtk_tree_path_free (path);
7810
7811   return TRUE;
7812 }
7813
7814
7815 static gboolean
7816 gtk_tree_view_drag_drop (GtkWidget        *widget,
7817                          GdkDragContext   *context,
7818                          /* coordinates relative to the widget */
7819                          gint              x,
7820                          gint              y,
7821                          guint             time)
7822 {
7823   GtkTreeView *tree_view;
7824   GtkTreePath *path;
7825   GdkDragAction suggested_action = 0;
7826   GdkAtom target = GDK_NONE;
7827   TreeViewDragInfo *di;
7828   GtkTreeModel *model;
7829   gboolean path_down_mode;
7830   gboolean drop_append_mode;
7831
7832   tree_view = GTK_TREE_VIEW (widget);
7833
7834   model = gtk_tree_view_get_model (tree_view);
7835
7836   remove_scroll_timeout (GTK_TREE_VIEW (widget));
7837   remove_open_timeout (GTK_TREE_VIEW (widget));
7838
7839   di = get_info (tree_view);
7840
7841   if (di == NULL)
7842     return FALSE;
7843
7844   if (!check_model_dnd (model, GTK_TYPE_TREE_DRAG_DEST, "drag_drop"))
7845     return FALSE;
7846
7847   if (!set_destination_row (tree_view, context, x, y, &suggested_action, &target))
7848     return FALSE;
7849
7850   path = get_logical_dest_row (tree_view, &path_down_mode, &drop_append_mode);
7851
7852   if (target != GDK_NONE && path != NULL)
7853     {
7854       /* in case a motion had requested drag data, change things so we
7855        * treat drag data receives as a drop.
7856        */
7857       set_status_pending (context, 0);
7858       set_dest_row (context, model, path,
7859                     path_down_mode, tree_view->priv->empty_view_drop,
7860                     drop_append_mode);
7861     }
7862
7863   if (path)
7864     gtk_tree_path_free (path);
7865
7866   /* Unset this thing */
7867   gtk_tree_view_set_drag_dest_row (GTK_TREE_VIEW (widget),
7868                                    NULL,
7869                                    GTK_TREE_VIEW_DROP_BEFORE);
7870
7871   if (target != GDK_NONE)
7872     {
7873       gtk_drag_get_data (widget, context, target, time);
7874       return TRUE;
7875     }
7876   else
7877     return FALSE;
7878 }
7879
7880 static void
7881 gtk_tree_view_drag_data_received (GtkWidget        *widget,
7882                                   GdkDragContext   *context,
7883                                   /* coordinates relative to the widget */
7884                                   gint              x,
7885                                   gint              y,
7886                                   GtkSelectionData *selection_data,
7887                                   guint             info,
7888                                   guint             time)
7889 {
7890   GtkTreePath *path;
7891   TreeViewDragInfo *di;
7892   gboolean accepted = FALSE;
7893   GtkTreeModel *model;
7894   GtkTreeView *tree_view;
7895   GtkTreePath *dest_row;
7896   GdkDragAction suggested_action;
7897   gboolean path_down_mode;
7898   gboolean drop_append_mode;
7899
7900   tree_view = GTK_TREE_VIEW (widget);
7901
7902   model = gtk_tree_view_get_model (tree_view);
7903
7904   if (!check_model_dnd (model, GTK_TYPE_TREE_DRAG_DEST, "drag_data_received"))
7905     return;
7906
7907   di = get_info (tree_view);
7908
7909   if (di == NULL)
7910     return;
7911
7912   suggested_action = get_status_pending (context);
7913
7914   if (suggested_action)
7915     {
7916       /* We are getting this data due to a request in drag_motion,
7917        * rather than due to a request in drag_drop, so we are just
7918        * supposed to call drag_status, not actually paste in the
7919        * data.
7920        */
7921       path = get_logical_dest_row (tree_view, &path_down_mode,
7922                                    &drop_append_mode);
7923
7924       if (path == NULL)
7925         suggested_action = 0;
7926       else if (path_down_mode)
7927         gtk_tree_path_down (path);
7928
7929       if (suggested_action)
7930         {
7931           if (!gtk_tree_drag_dest_row_drop_possible (GTK_TREE_DRAG_DEST (model),
7932                                                      path,
7933                                                      selection_data))
7934             {
7935               if (path_down_mode)
7936                 {
7937                   path_down_mode = FALSE;
7938                   gtk_tree_path_up (path);
7939
7940                   if (!gtk_tree_drag_dest_row_drop_possible (GTK_TREE_DRAG_DEST (model),
7941                                                              path,
7942                                                              selection_data))
7943                     suggested_action = 0;
7944                 }
7945               else
7946                 suggested_action = 0;
7947             }
7948         }
7949
7950       gdk_drag_status (context, suggested_action, time);
7951
7952       if (path)
7953         gtk_tree_path_free (path);
7954
7955       /* If you can't drop, remove user drop indicator until the next motion */
7956       if (suggested_action == 0)
7957         gtk_tree_view_set_drag_dest_row (GTK_TREE_VIEW (widget),
7958                                          NULL,
7959                                          GTK_TREE_VIEW_DROP_BEFORE);
7960
7961       return;
7962     }
7963
7964   dest_row = get_dest_row (context, &path_down_mode);
7965
7966   if (dest_row == NULL)
7967     return;
7968
7969   if (gtk_selection_data_get_length (selection_data) >= 0)
7970     {
7971       if (path_down_mode)
7972         {
7973           gtk_tree_path_down (dest_row);
7974           if (!gtk_tree_drag_dest_row_drop_possible (GTK_TREE_DRAG_DEST (model),
7975                                                      dest_row, selection_data))
7976             gtk_tree_path_up (dest_row);
7977         }
7978     }
7979
7980   if (gtk_selection_data_get_length (selection_data) >= 0)
7981     {
7982       if (gtk_tree_drag_dest_drag_data_received (GTK_TREE_DRAG_DEST (model),
7983                                                  dest_row,
7984                                                  selection_data))
7985         accepted = TRUE;
7986     }
7987
7988   gtk_drag_finish (context,
7989                    accepted,
7990                    (gdk_drag_context_get_selected_action (context) == GDK_ACTION_MOVE),
7991                    time);
7992
7993   if (gtk_tree_path_get_depth (dest_row) == 1 &&
7994       gtk_tree_path_get_indices (dest_row)[0] == 0 &&
7995       gtk_tree_model_iter_n_children (tree_view->priv->model, NULL) != 0)
7996     {
7997       /* special special case drag to "0", scroll to first item */
7998       if (!tree_view->priv->scroll_to_path)
7999         gtk_tree_view_scroll_to_cell (tree_view, dest_row, NULL, FALSE, 0.0, 0.0);
8000     }
8001
8002   gtk_tree_path_free (dest_row);
8003
8004   /* drop dest_row */
8005   set_dest_row (context, NULL, NULL, FALSE, FALSE, FALSE);
8006 }
8007
8008
8009
8010 /* GtkContainer Methods
8011  */
8012
8013
8014 static void
8015 gtk_tree_view_remove (GtkContainer *container,
8016                       GtkWidget    *widget)
8017 {
8018   GtkTreeView *tree_view = GTK_TREE_VIEW (container);
8019   GtkTreeViewChild *child = NULL;
8020   GList *tmp_list;
8021
8022   tmp_list = tree_view->priv->children;
8023   while (tmp_list)
8024     {
8025       child = tmp_list->data;
8026       if (child->widget == widget)
8027         {
8028           gtk_widget_unparent (widget);
8029
8030           tree_view->priv->children = g_list_remove_link (tree_view->priv->children, tmp_list);
8031           g_list_free_1 (tmp_list);
8032           g_slice_free (GtkTreeViewChild, child);
8033           return;
8034         }
8035
8036       tmp_list = tmp_list->next;
8037     }
8038
8039   tmp_list = tree_view->priv->columns;
8040
8041   while (tmp_list)
8042     {
8043       GtkTreeViewColumn *column;
8044       GtkWidget         *button;
8045
8046       column = tmp_list->data;
8047       button = gtk_tree_view_column_get_button (column);
8048
8049       if (button == widget)
8050         {
8051           gtk_widget_unparent (widget);
8052           return;
8053         }
8054       tmp_list = tmp_list->next;
8055     }
8056 }
8057
8058 static void
8059 gtk_tree_view_forall (GtkContainer *container,
8060                       gboolean      include_internals,
8061                       GtkCallback   callback,
8062                       gpointer      callback_data)
8063 {
8064   GtkTreeView *tree_view = GTK_TREE_VIEW (container);
8065   GtkTreeViewChild *child = NULL;
8066   GtkTreeViewColumn *column;
8067   GtkWidget *button;
8068   GList *tmp_list;
8069
8070   tmp_list = tree_view->priv->children;
8071   while (tmp_list)
8072     {
8073       child = tmp_list->data;
8074       tmp_list = tmp_list->next;
8075
8076       (* callback) (child->widget, callback_data);
8077     }
8078   if (include_internals == FALSE)
8079     return;
8080
8081   for (tmp_list = tree_view->priv->columns; tmp_list; tmp_list = tmp_list->next)
8082     {
8083       column = tmp_list->data;
8084       button = gtk_tree_view_column_get_button (column);
8085
8086       if (button)
8087         (* callback) (button, callback_data);
8088     }
8089 }
8090
8091 /* Returns TRUE is any of the columns contains a cell that can-focus.
8092  * If this is not the case, a column-spanning focus rectangle will be
8093  * drawn.
8094  */
8095 static gboolean
8096 gtk_tree_view_has_can_focus_cell (GtkTreeView *tree_view)
8097 {
8098   GList *list;
8099
8100   for (list = tree_view->priv->columns; list; list = list->next)
8101     {
8102       GtkTreeViewColumn *column = list->data;
8103
8104       if (!gtk_tree_view_column_get_visible (column))
8105         continue;
8106       if (gtk_cell_area_is_activatable (gtk_cell_layout_get_area (GTK_CELL_LAYOUT (column))))
8107         return TRUE;
8108     }
8109
8110   return FALSE;
8111 }
8112
8113 static void
8114 column_sizing_notify (GObject    *object,
8115                       GParamSpec *pspec,
8116                       gpointer    data)
8117 {
8118   GtkTreeViewColumn *c = GTK_TREE_VIEW_COLUMN (object);
8119
8120   if (gtk_tree_view_column_get_sizing (c) != GTK_TREE_VIEW_COLUMN_FIXED)
8121     /* disable fixed height mode */
8122     g_object_set (data, "fixed-height-mode", FALSE, NULL);
8123 }
8124
8125 /**
8126  * gtk_tree_view_set_fixed_height_mode:
8127  * @tree_view: a #GtkTreeView
8128  * @enable: %TRUE to enable fixed height mode
8129  *
8130  * Enables or disables the fixed height mode of @tree_view.
8131  * Fixed height mode speeds up #GtkTreeView by assuming that all
8132  * rows have the same height.
8133  * Only enable this option if all rows are the same height and all
8134  * columns are of type %GTK_TREE_VIEW_COLUMN_FIXED.
8135  *
8136  * Since: 2.6
8137  **/
8138 void
8139 gtk_tree_view_set_fixed_height_mode (GtkTreeView *tree_view,
8140                                      gboolean     enable)
8141 {
8142   GList *l;
8143
8144   enable = enable != FALSE;
8145
8146   if (enable == tree_view->priv->fixed_height_mode)
8147     return;
8148
8149   if (!enable)
8150     {
8151       tree_view->priv->fixed_height_mode = 0;
8152       tree_view->priv->fixed_height = -1;
8153
8154       /* force a revalidation */
8155       install_presize_handler (tree_view);
8156     }
8157   else
8158     {
8159       /* make sure all columns are of type FIXED */
8160       for (l = tree_view->priv->columns; l; l = l->next)
8161         {
8162           GtkTreeViewColumn *c = l->data;
8163
8164           g_return_if_fail (gtk_tree_view_column_get_sizing (c) == GTK_TREE_VIEW_COLUMN_FIXED);
8165         }
8166
8167       /* yes, we really have to do this is in a separate loop */
8168       for (l = tree_view->priv->columns; l; l = l->next)
8169         g_signal_connect (l->data, "notify::sizing",
8170                           G_CALLBACK (column_sizing_notify), tree_view);
8171
8172       tree_view->priv->fixed_height_mode = 1;
8173       tree_view->priv->fixed_height = -1;
8174
8175       if (tree_view->priv->tree)
8176         initialize_fixed_height_mode (tree_view);
8177     }
8178
8179   g_object_notify (G_OBJECT (tree_view), "fixed-height-mode");
8180 }
8181
8182 /**
8183  * gtk_tree_view_get_fixed_height_mode:
8184  * @tree_view: a #GtkTreeView
8185  *
8186  * Returns whether fixed height mode is turned on for @tree_view.
8187  *
8188  * Return value: %TRUE if @tree_view is in fixed height mode
8189  *
8190  * Since: 2.6
8191  **/
8192 gboolean
8193 gtk_tree_view_get_fixed_height_mode (GtkTreeView *tree_view)
8194 {
8195   return tree_view->priv->fixed_height_mode;
8196 }
8197
8198 /* Returns TRUE if the focus is within the headers, after the focus operation is
8199  * done
8200  */
8201 static gboolean
8202 gtk_tree_view_header_focus (GtkTreeView      *tree_view,
8203                             GtkDirectionType  dir,
8204                             gboolean          clamp_column_visible)
8205 {
8206   GtkTreeViewColumn *column;
8207   GtkWidget *focus_child;
8208   GtkWidget *button;
8209   GList *last_column, *first_column;
8210   GList *tmp_list;
8211   gboolean rtl;
8212
8213   if (! tree_view->priv->headers_visible)
8214     return FALSE;
8215
8216   focus_child = gtk_container_get_focus_child (GTK_CONTAINER (tree_view));
8217
8218   first_column = tree_view->priv->columns;
8219   while (first_column)
8220     {
8221       column = GTK_TREE_VIEW_COLUMN (first_column->data);
8222       button = gtk_tree_view_column_get_button (column);
8223
8224       if (gtk_widget_get_can_focus (button) &&
8225           gtk_tree_view_column_get_visible (column) &&
8226           (gtk_tree_view_column_get_clickable (column) ||
8227            gtk_tree_view_column_get_reorderable (column)))
8228         break;
8229       first_column = first_column->next;
8230     }
8231
8232   /* No headers are visible, or are focusable.  We can't focus in or out.
8233    */
8234   if (first_column == NULL)
8235     return FALSE;
8236
8237   last_column = g_list_last (tree_view->priv->columns);
8238   while (last_column)
8239     {
8240       column = GTK_TREE_VIEW_COLUMN (last_column->data);
8241       button = gtk_tree_view_column_get_button (column);
8242
8243       if (gtk_widget_get_can_focus (button) &&
8244           gtk_tree_view_column_get_visible (column) &&
8245           (gtk_tree_view_column_get_clickable (column) ||
8246            gtk_tree_view_column_get_reorderable (column)))
8247         break;
8248       last_column = last_column->prev;
8249     }
8250
8251
8252   rtl = (gtk_widget_get_direction (GTK_WIDGET (tree_view)) == GTK_TEXT_DIR_RTL);
8253
8254   switch (dir)
8255     {
8256     case GTK_DIR_TAB_BACKWARD:
8257     case GTK_DIR_TAB_FORWARD:
8258     case GTK_DIR_UP:
8259     case GTK_DIR_DOWN:
8260       if (focus_child == NULL)
8261         {
8262           if (tree_view->priv->focus_column != NULL)
8263             button = gtk_tree_view_column_get_button (tree_view->priv->focus_column);
8264           else
8265             button = NULL;
8266
8267           if (button && gtk_widget_get_can_focus (button))
8268             focus_child = button;
8269           else
8270             focus_child = gtk_tree_view_column_get_button (GTK_TREE_VIEW_COLUMN (first_column->data));
8271
8272           gtk_widget_grab_focus (focus_child);
8273           break;
8274         }
8275       return FALSE;
8276
8277     case GTK_DIR_LEFT:
8278     case GTK_DIR_RIGHT:
8279       if (focus_child == NULL)
8280         {
8281           if (tree_view->priv->focus_column != NULL)
8282             focus_child = gtk_tree_view_column_get_button (tree_view->priv->focus_column);
8283           else if (dir == GTK_DIR_LEFT)
8284             focus_child = gtk_tree_view_column_get_button (GTK_TREE_VIEW_COLUMN (last_column->data));
8285           else
8286             focus_child = gtk_tree_view_column_get_button (GTK_TREE_VIEW_COLUMN (first_column->data));
8287
8288           gtk_widget_grab_focus (focus_child);
8289           break;
8290         }
8291
8292       if (gtk_widget_child_focus (focus_child, dir))
8293         {
8294           /* The focus moves inside the button. */
8295           /* This is probably a great example of bad UI */
8296           break;
8297         }
8298
8299       /* We need to move the focus among the row of buttons. */
8300       for (tmp_list = tree_view->priv->columns; tmp_list; tmp_list = tmp_list->next)
8301         if (gtk_tree_view_column_get_button (GTK_TREE_VIEW_COLUMN (tmp_list->data)) == focus_child)
8302           break;
8303
8304       if ((tmp_list == first_column && dir == (rtl ? GTK_DIR_RIGHT : GTK_DIR_LEFT))
8305           || (tmp_list == last_column && dir == (rtl ? GTK_DIR_LEFT : GTK_DIR_RIGHT)))
8306         {
8307           gtk_widget_error_bell (GTK_WIDGET (tree_view));
8308           break;
8309         }
8310
8311       while (tmp_list)
8312         {
8313           GtkTreeViewColumn *column;
8314           GtkWidget         *button;
8315
8316           if (dir == (rtl ? GTK_DIR_LEFT : GTK_DIR_RIGHT))
8317             tmp_list = tmp_list->next;
8318           else
8319             tmp_list = tmp_list->prev;
8320
8321           if (tmp_list == NULL)
8322             {
8323               g_warning ("Internal button not found");
8324               break;
8325             }
8326           column = tmp_list->data;
8327           button = gtk_tree_view_column_get_button (column);
8328           if (button &&
8329               gtk_tree_view_column_get_visible (column) &&
8330               gtk_widget_get_can_focus (button))
8331             {
8332               focus_child = button;
8333               gtk_widget_grab_focus (button);
8334               break;
8335             }
8336         }
8337       break;
8338     default:
8339       g_assert_not_reached ();
8340       break;
8341     }
8342
8343   /* if focus child is non-null, we assume it's been set to the current focus child
8344    */
8345   if (focus_child)
8346     {
8347       for (tmp_list = tree_view->priv->columns; tmp_list; tmp_list = tmp_list->next)
8348         if (gtk_tree_view_column_get_button (GTK_TREE_VIEW_COLUMN (tmp_list->data)) == focus_child)
8349           {
8350             tree_view->priv->focus_column = GTK_TREE_VIEW_COLUMN (tmp_list->data);
8351             break;
8352           }
8353
8354       if (clamp_column_visible)
8355         {
8356           gtk_tree_view_clamp_column_visible (tree_view,
8357                                               tree_view->priv->focus_column,
8358                                               FALSE);
8359         }
8360     }
8361
8362   return (focus_child != NULL);
8363 }
8364
8365 /* This function returns in 'path' the first focusable path, if the given path
8366  * is already focusable, it's the returned one.
8367  */
8368 static gboolean
8369 search_first_focusable_path (GtkTreeView  *tree_view,
8370                              GtkTreePath **path,
8371                              gboolean      search_forward,
8372                              GtkRBTree   **new_tree,
8373                              GtkRBNode   **new_node)
8374 {
8375   GtkRBTree *tree = NULL;
8376   GtkRBNode *node = NULL;
8377
8378   if (!path || !*path)
8379     return FALSE;
8380
8381   _gtk_tree_view_find_node (tree_view, *path, &tree, &node);
8382
8383   if (!tree || !node)
8384     return FALSE;
8385
8386   while (node && row_is_separator (tree_view, NULL, *path))
8387     {
8388       if (search_forward)
8389         _gtk_rbtree_next_full (tree, node, &tree, &node);
8390       else
8391         _gtk_rbtree_prev_full (tree, node, &tree, &node);
8392
8393       if (*path)
8394         gtk_tree_path_free (*path);
8395
8396       if (node)
8397         *path = _gtk_tree_view_find_path (tree_view, tree, node);
8398       else
8399         *path = NULL;
8400     }
8401
8402   if (new_tree)
8403     *new_tree = tree;
8404
8405   if (new_node)
8406     *new_node = node;
8407
8408   return (*path != NULL);
8409 }
8410
8411 static gint
8412 gtk_tree_view_focus (GtkWidget        *widget,
8413                      GtkDirectionType  direction)
8414 {
8415   GtkTreeView *tree_view = GTK_TREE_VIEW (widget);
8416   GtkContainer *container = GTK_CONTAINER (widget);
8417   GtkWidget *focus_child;
8418
8419   if (!gtk_widget_is_sensitive (widget) || !gtk_widget_get_can_focus (widget))
8420     return FALSE;
8421
8422   focus_child = gtk_container_get_focus_child (container);
8423
8424   gtk_tree_view_stop_editing (GTK_TREE_VIEW (widget), FALSE);
8425   /* Case 1.  Headers currently have focus. */
8426   if (focus_child)
8427     {
8428       switch (direction)
8429         {
8430         case GTK_DIR_LEFT:
8431         case GTK_DIR_RIGHT:
8432           gtk_tree_view_header_focus (tree_view, direction, TRUE);
8433           return TRUE;
8434         case GTK_DIR_TAB_BACKWARD:
8435         case GTK_DIR_UP:
8436           return FALSE;
8437         case GTK_DIR_TAB_FORWARD:
8438         case GTK_DIR_DOWN:
8439           gtk_widget_grab_focus (widget);
8440           return TRUE;
8441         default:
8442           g_assert_not_reached ();
8443           return FALSE;
8444         }
8445     }
8446
8447   /* Case 2. We don't have focus at all. */
8448   if (!gtk_widget_has_focus (widget))
8449     {
8450       gtk_widget_grab_focus (widget);
8451       return TRUE;
8452     }
8453
8454   /* Case 3. We have focus already. */
8455   if (direction == GTK_DIR_TAB_BACKWARD)
8456     return (gtk_tree_view_header_focus (tree_view, direction, FALSE));
8457   else if (direction == GTK_DIR_TAB_FORWARD)
8458     return FALSE;
8459
8460   /* Other directions caught by the keybindings */
8461   gtk_widget_grab_focus (widget);
8462   return TRUE;
8463 }
8464
8465 static void
8466 gtk_tree_view_grab_focus (GtkWidget *widget)
8467 {
8468   GTK_WIDGET_CLASS (gtk_tree_view_parent_class)->grab_focus (widget);
8469
8470   gtk_tree_view_focus_to_cursor (GTK_TREE_VIEW (widget));
8471 }
8472
8473 static void
8474 gtk_tree_view_style_updated (GtkWidget *widget)
8475 {
8476   GtkTreeView *tree_view = GTK_TREE_VIEW (widget);
8477   GList *list;
8478   GtkTreeViewColumn *column;
8479
8480   GTK_WIDGET_CLASS (gtk_tree_view_parent_class)->style_updated (widget);
8481
8482   if (gtk_widget_get_realized (widget))
8483     {
8484       gtk_tree_view_ensure_background (tree_view);
8485
8486       gtk_tree_view_set_grid_lines (tree_view, tree_view->priv->grid_lines);
8487       gtk_tree_view_set_enable_tree_lines (tree_view, tree_view->priv->tree_lines_enabled);
8488     }
8489
8490   gtk_widget_style_get (widget,
8491                         "expander-size", &tree_view->priv->expander_size,
8492                         NULL);
8493   tree_view->priv->expander_size += EXPANDER_EXTRA_PADDING;
8494
8495   for (list = tree_view->priv->columns; list; list = list->next)
8496     {
8497       column = list->data;
8498       _gtk_tree_view_column_cell_set_dirty (column, TRUE);
8499     }
8500
8501   tree_view->priv->fixed_height = -1;
8502   _gtk_rbtree_mark_invalid (tree_view->priv->tree);
8503
8504   gtk_widget_queue_resize (widget);
8505 }
8506
8507
8508 static void
8509 gtk_tree_view_set_focus_child (GtkContainer *container,
8510                                GtkWidget    *child)
8511 {
8512   GtkTreeView *tree_view = GTK_TREE_VIEW (container);
8513   GList *list;
8514
8515   for (list = tree_view->priv->columns; list; list = list->next)
8516     {
8517       if (gtk_tree_view_column_get_button (GTK_TREE_VIEW_COLUMN (list->data)) == child)
8518         {
8519           tree_view->priv->focus_column = GTK_TREE_VIEW_COLUMN (list->data);
8520           break;
8521         }
8522     }
8523
8524   GTK_CONTAINER_CLASS (gtk_tree_view_parent_class)->set_focus_child (container, child);
8525 }
8526
8527 static GtkWidgetPath *
8528 gtk_tree_view_get_path_for_child (GtkContainer *container,
8529                                   GtkWidget    *child)
8530 {
8531   GtkTreeView *tree_view = GTK_TREE_VIEW (container);
8532   GtkWidgetPath *path;
8533   gboolean rtl;
8534   GList *list;
8535   gint n_col = 0;
8536
8537   path = GTK_CONTAINER_CLASS (gtk_tree_view_parent_class)->get_path_for_child (container, child);
8538   rtl = (gtk_widget_get_direction (GTK_WIDGET (container)) == GTK_TEXT_DIR_RTL);
8539
8540   for (list = (rtl ? g_list_last (tree_view->priv->columns) : g_list_first (tree_view->priv->columns));
8541        list;
8542        list = (rtl ? list->prev : list->next))
8543     {
8544       GtkTreeViewColumn *column = list->data;
8545       GtkRegionFlags flags = 0;
8546
8547       if (!gtk_tree_view_column_get_visible (column))
8548         continue;
8549
8550       n_col++;
8551
8552       if (gtk_tree_view_column_get_widget (column) != child &&
8553           gtk_tree_view_column_get_button (column) != child)
8554         continue;
8555
8556       if ((n_col % 2) == 0)
8557         flags |= GTK_REGION_EVEN;
8558       else
8559         flags |= GTK_REGION_ODD;
8560
8561       if (n_col == 1)
8562         flags |= GTK_REGION_FIRST;
8563
8564       if ((rtl && !list->prev) ||
8565           (!rtl && !list->next))
8566         flags |= GTK_REGION_LAST;
8567
8568       gtk_widget_path_iter_add_region (path, -1, GTK_STYLE_REGION_COLUMN_HEADER, flags);
8569       break;
8570     }
8571
8572   gtk_widget_path_append_for_widget (path, child);
8573
8574   return path;
8575 }
8576
8577 static gboolean
8578 gtk_tree_view_real_move_cursor (GtkTreeView       *tree_view,
8579                                 GtkMovementStep    step,
8580                                 gint               count)
8581 {
8582   GdkModifierType state;
8583
8584   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), FALSE);
8585   g_return_val_if_fail (step == GTK_MOVEMENT_LOGICAL_POSITIONS ||
8586                         step == GTK_MOVEMENT_VISUAL_POSITIONS ||
8587                         step == GTK_MOVEMENT_DISPLAY_LINES ||
8588                         step == GTK_MOVEMENT_PAGES ||
8589                         step == GTK_MOVEMENT_BUFFER_ENDS, FALSE);
8590
8591   if (tree_view->priv->tree == NULL)
8592     return FALSE;
8593   if (!gtk_widget_has_focus (GTK_WIDGET (tree_view)))
8594     return FALSE;
8595
8596   gtk_tree_view_stop_editing (tree_view, FALSE);
8597   tree_view->priv->draw_keyfocus = TRUE;
8598   gtk_widget_grab_focus (GTK_WIDGET (tree_view));
8599
8600   if (gtk_get_current_event_state (&state))
8601     {
8602       GdkModifierType extend_mod_mask;
8603       GdkModifierType modify_mod_mask;
8604
8605       extend_mod_mask =
8606         gtk_widget_get_modifier_mask (GTK_WIDGET (tree_view),
8607                                       GDK_MODIFIER_INTENT_EXTEND_SELECTION);
8608
8609       modify_mod_mask =
8610         gtk_widget_get_modifier_mask (GTK_WIDGET (tree_view),
8611                                       GDK_MODIFIER_INTENT_MODIFY_SELECTION);
8612
8613       if ((state & modify_mod_mask) == modify_mod_mask)
8614         tree_view->priv->modify_selection_pressed = TRUE;
8615       if ((state & extend_mod_mask) == extend_mod_mask)
8616         tree_view->priv->extend_selection_pressed = TRUE;
8617     }
8618   /* else we assume not pressed */
8619
8620   switch (step)
8621     {
8622       /* currently we make no distinction.  When we go bi-di, we need to */
8623     case GTK_MOVEMENT_LOGICAL_POSITIONS:
8624     case GTK_MOVEMENT_VISUAL_POSITIONS:
8625       gtk_tree_view_move_cursor_left_right (tree_view, count);
8626       break;
8627     case GTK_MOVEMENT_DISPLAY_LINES:
8628       gtk_tree_view_move_cursor_up_down (tree_view, count);
8629       break;
8630     case GTK_MOVEMENT_PAGES:
8631       gtk_tree_view_move_cursor_page_up_down (tree_view, count);
8632       break;
8633     case GTK_MOVEMENT_BUFFER_ENDS:
8634       gtk_tree_view_move_cursor_start_end (tree_view, count);
8635       break;
8636     default:
8637       g_assert_not_reached ();
8638     }
8639
8640   tree_view->priv->modify_selection_pressed = FALSE;
8641   tree_view->priv->extend_selection_pressed = FALSE;
8642
8643   return TRUE;
8644 }
8645
8646 static void
8647 gtk_tree_view_put (GtkTreeView *tree_view,
8648                    GtkWidget   *child_widget,
8649                    /* in bin_window coordinates */
8650                    gint         x,
8651                    gint         y,
8652                    gint         width,
8653                    gint         height)
8654 {
8655   GtkTreeViewChild *child;
8656
8657   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
8658   g_return_if_fail (GTK_IS_WIDGET (child_widget));
8659
8660   child = g_slice_new (GtkTreeViewChild);
8661
8662   child->widget = child_widget;
8663   child->x = x;
8664   child->y = y;
8665   child->width = width;
8666   child->height = height;
8667
8668   tree_view->priv->children = g_list_append (tree_view->priv->children, child);
8669
8670   if (gtk_widget_get_realized (GTK_WIDGET (tree_view)))
8671     gtk_widget_set_parent_window (child->widget, tree_view->priv->bin_window);
8672
8673   gtk_widget_set_parent (child_widget, GTK_WIDGET (tree_view));
8674 }
8675
8676 void
8677 _gtk_tree_view_child_move_resize (GtkTreeView *tree_view,
8678                                   GtkWidget   *widget,
8679                                   /* in tree coordinates */
8680                                   gint         x,
8681                                   gint         y,
8682                                   gint         width,
8683                                   gint         height)
8684 {
8685   GtkTreeViewChild *child = NULL;
8686   GList *list;
8687   GdkRectangle allocation;
8688
8689   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
8690   g_return_if_fail (GTK_IS_WIDGET (widget));
8691
8692   for (list = tree_view->priv->children; list; list = list->next)
8693     {
8694       if (((GtkTreeViewChild *)list->data)->widget == widget)
8695         {
8696           child = list->data;
8697           break;
8698         }
8699     }
8700   if (child == NULL)
8701     return;
8702
8703   allocation.x = child->x = x;
8704   allocation.y = child->y = y;
8705   allocation.width = child->width = width;
8706   allocation.height = child->height = height;
8707
8708   if (gtk_widget_get_realized (widget))
8709     gtk_widget_size_allocate (widget, &allocation);
8710 }
8711
8712
8713 /* TreeModel Callbacks
8714  */
8715
8716 static void
8717 gtk_tree_view_row_changed (GtkTreeModel *model,
8718                            GtkTreePath  *path,
8719                            GtkTreeIter  *iter,
8720                            gpointer      data)
8721 {
8722   GtkTreeView *tree_view = (GtkTreeView *)data;
8723   GtkRBTree *tree;
8724   GtkRBNode *node;
8725   gboolean free_path = FALSE;
8726   GList *list;
8727   GtkTreePath *cursor_path;
8728
8729   g_return_if_fail (path != NULL || iter != NULL);
8730
8731   if (tree_view->priv->cursor != NULL)
8732     cursor_path = gtk_tree_row_reference_get_path (tree_view->priv->cursor);
8733   else
8734     cursor_path = NULL;
8735
8736   if (tree_view->priv->edited_column &&
8737       (cursor_path == NULL || gtk_tree_path_compare (cursor_path, path) == 0))
8738     gtk_tree_view_stop_editing (tree_view, TRUE);
8739
8740   if (cursor_path != NULL)
8741     gtk_tree_path_free (cursor_path);
8742
8743   if (path == NULL)
8744     {
8745       path = gtk_tree_model_get_path (model, iter);
8746       free_path = TRUE;
8747     }
8748   else if (iter == NULL)
8749     gtk_tree_model_get_iter (model, iter, path);
8750
8751   if (_gtk_tree_view_find_node (tree_view,
8752                                 path,
8753                                 &tree,
8754                                 &node))
8755     /* We aren't actually showing the node */
8756     goto done;
8757
8758   if (tree == NULL)
8759     goto done;
8760
8761   if (tree_view->priv->fixed_height_mode
8762       && tree_view->priv->fixed_height >= 0)
8763     {
8764       _gtk_rbtree_node_set_height (tree, node, tree_view->priv->fixed_height);
8765       if (gtk_widget_get_realized (GTK_WIDGET (tree_view)))
8766         gtk_tree_view_node_queue_redraw (tree_view, tree, node);
8767     }
8768   else
8769     {
8770       _gtk_rbtree_node_mark_invalid (tree, node);
8771       for (list = tree_view->priv->columns; list; list = list->next)
8772         {
8773           GtkTreeViewColumn *column;
8774
8775           column = list->data;
8776           if (!gtk_tree_view_column_get_visible (column))
8777             continue;
8778
8779           if (gtk_tree_view_column_get_sizing (column) == GTK_TREE_VIEW_COLUMN_AUTOSIZE)
8780             {
8781               _gtk_tree_view_column_cell_set_dirty (column, TRUE);
8782             }
8783         }
8784     }
8785
8786  done:
8787   if (!tree_view->priv->fixed_height_mode &&
8788       gtk_widget_get_realized (GTK_WIDGET (tree_view)))
8789     install_presize_handler (tree_view);
8790   if (free_path)
8791     gtk_tree_path_free (path);
8792 }
8793
8794 static void
8795 gtk_tree_view_row_inserted (GtkTreeModel *model,
8796                             GtkTreePath  *path,
8797                             GtkTreeIter  *iter,
8798                             gpointer      data)
8799 {
8800   GtkTreeView *tree_view = (GtkTreeView *) data;
8801   gint *indices;
8802   GtkRBTree *tree;
8803   GtkRBNode *tmpnode = NULL;
8804   gint depth;
8805   gint i = 0;
8806   gint height;
8807   gboolean free_path = FALSE;
8808   gboolean node_visible = TRUE;
8809
8810   g_return_if_fail (path != NULL || iter != NULL);
8811
8812   if (tree_view->priv->fixed_height_mode
8813       && tree_view->priv->fixed_height >= 0)
8814     height = tree_view->priv->fixed_height;
8815   else
8816     height = 0;
8817
8818   if (path == NULL)
8819     {
8820       path = gtk_tree_model_get_path (model, iter);
8821       free_path = TRUE;
8822     }
8823   else if (iter == NULL)
8824     gtk_tree_model_get_iter (model, iter, path);
8825
8826   if (tree_view->priv->tree == NULL)
8827     tree_view->priv->tree = _gtk_rbtree_new ();
8828
8829   tree = tree_view->priv->tree;
8830
8831   /* Update all row-references */
8832   gtk_tree_row_reference_inserted (G_OBJECT (data), path);
8833   depth = gtk_tree_path_get_depth (path);
8834   indices = gtk_tree_path_get_indices (path);
8835
8836   /* First, find the parent tree */
8837   while (i < depth - 1)
8838     {
8839       if (tree == NULL)
8840         {
8841           /* We aren't showing the node */
8842           node_visible = FALSE;
8843           goto done;
8844         }
8845
8846       tmpnode = _gtk_rbtree_find_count (tree, indices[i] + 1);
8847       if (tmpnode == NULL)
8848         {
8849           g_warning ("A node was inserted with a parent that's not in the tree.\n" \
8850                      "This possibly means that a GtkTreeModel inserted a child node\n" \
8851                      "before the parent was inserted.");
8852           goto done;
8853         }
8854       else if (!GTK_RBNODE_FLAG_SET (tmpnode, GTK_RBNODE_IS_PARENT))
8855         {
8856           /* FIXME enforce correct behavior on model, probably */
8857           /* In theory, the model should have emitted has_child_toggled here.  We
8858            * try to catch it anyway, just to be safe, in case the model hasn't.
8859            */
8860           GtkTreePath *tmppath = _gtk_tree_view_find_path (tree_view,
8861                                                            tree,
8862                                                            tmpnode);
8863           gtk_tree_view_row_has_child_toggled (model, tmppath, NULL, data);
8864           gtk_tree_path_free (tmppath);
8865           goto done;
8866         }
8867
8868       tree = tmpnode->children;
8869       i++;
8870     }
8871
8872   if (tree == NULL)
8873     {
8874       node_visible = FALSE;
8875       goto done;
8876     }
8877
8878   /* ref the node */
8879   gtk_tree_model_ref_node (tree_view->priv->model, iter);
8880   if (indices[depth - 1] == 0)
8881     {
8882       tmpnode = _gtk_rbtree_find_count (tree, 1);
8883       tmpnode = _gtk_rbtree_insert_before (tree, tmpnode, height, FALSE);
8884     }
8885   else
8886     {
8887       tmpnode = _gtk_rbtree_find_count (tree, indices[depth - 1]);
8888       tmpnode = _gtk_rbtree_insert_after (tree, tmpnode, height, FALSE);
8889     }
8890
8891  done:
8892   if (height > 0)
8893     {
8894       if (tree)
8895         _gtk_rbtree_node_mark_valid (tree, tmpnode);
8896
8897       if (node_visible && node_is_visible (tree_view, tree, tmpnode))
8898         gtk_widget_queue_resize (GTK_WIDGET (tree_view));
8899       else
8900         gtk_widget_queue_resize_no_redraw (GTK_WIDGET (tree_view));
8901     }
8902   else
8903     install_presize_handler (tree_view);
8904   if (free_path)
8905     gtk_tree_path_free (path);
8906 }
8907
8908 static void
8909 gtk_tree_view_row_has_child_toggled (GtkTreeModel *model,
8910                                      GtkTreePath  *path,
8911                                      GtkTreeIter  *iter,
8912                                      gpointer      data)
8913 {
8914   GtkTreeView *tree_view = (GtkTreeView *)data;
8915   GtkTreeIter real_iter;
8916   gboolean has_child;
8917   GtkRBTree *tree;
8918   GtkRBNode *node;
8919   gboolean free_path = FALSE;
8920
8921   g_return_if_fail (path != NULL || iter != NULL);
8922
8923   if (iter)
8924     real_iter = *iter;
8925
8926   if (path == NULL)
8927     {
8928       path = gtk_tree_model_get_path (model, iter);
8929       free_path = TRUE;
8930     }
8931   else if (iter == NULL)
8932     gtk_tree_model_get_iter (model, &real_iter, path);
8933
8934   if (_gtk_tree_view_find_node (tree_view,
8935                                 path,
8936                                 &tree,
8937                                 &node))
8938     /* We aren't actually showing the node */
8939     goto done;
8940
8941   if (tree == NULL)
8942     goto done;
8943
8944   has_child = gtk_tree_model_iter_has_child (model, &real_iter);
8945   /* Sanity check.
8946    */
8947   if (GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_PARENT) == has_child)
8948     goto done;
8949
8950   if (has_child)
8951     GTK_RBNODE_SET_FLAG (node, GTK_RBNODE_IS_PARENT);
8952   else
8953     GTK_RBNODE_UNSET_FLAG (node, GTK_RBNODE_IS_PARENT);
8954
8955   if (has_child && tree_view->priv->is_list)
8956     {
8957       tree_view->priv->is_list = FALSE;
8958       if (tree_view->priv->show_expanders)
8959         {
8960           GList *list;
8961
8962           for (list = tree_view->priv->columns; list; list = list->next)
8963             if (gtk_tree_view_column_get_visible (GTK_TREE_VIEW_COLUMN (list->data)))
8964               {
8965                 _gtk_tree_view_column_cell_set_dirty (GTK_TREE_VIEW_COLUMN (list->data), TRUE);
8966                 break;
8967               }
8968         }
8969       gtk_widget_queue_resize (GTK_WIDGET (tree_view));
8970     }
8971   else
8972     {
8973       _gtk_tree_view_queue_draw_node (tree_view, tree, node, NULL);
8974     }
8975
8976  done:
8977   if (free_path)
8978     gtk_tree_path_free (path);
8979 }
8980
8981 static void
8982 count_children_helper (GtkRBTree *tree,
8983                        GtkRBNode *node,
8984                        gpointer   data)
8985 {
8986   if (node->children)
8987     _gtk_rbtree_traverse (node->children, node->children->root, G_POST_ORDER, count_children_helper, data);
8988   (*((gint *)data))++;
8989 }
8990
8991 static void
8992 check_selection_helper (GtkRBTree *tree,
8993                         GtkRBNode *node,
8994                         gpointer   data)
8995 {
8996   gint *value = (gint *)data;
8997
8998   *value = GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_SELECTED);
8999
9000   if (node->children && !*value)
9001     _gtk_rbtree_traverse (node->children, node->children->root, G_POST_ORDER, check_selection_helper, data);
9002 }
9003
9004 static void
9005 gtk_tree_view_row_deleted (GtkTreeModel *model,
9006                            GtkTreePath  *path,
9007                            gpointer      data)
9008 {
9009   GtkTreeView *tree_view = (GtkTreeView *)data;
9010   GtkRBTree *tree;
9011   GtkRBNode *node;
9012   GList *list;
9013   gint selection_changed = FALSE;
9014   GtkStyleContext *context;
9015
9016   g_return_if_fail (path != NULL);
9017
9018   gtk_tree_row_reference_deleted (G_OBJECT (data), path);
9019
9020   if (_gtk_tree_view_find_node (tree_view, path, &tree, &node))
9021     return;
9022
9023   if (tree == NULL)
9024     return;
9025
9026   /* check if the selection has been changed */
9027   _gtk_rbtree_traverse (tree, node, G_POST_ORDER,
9028                         check_selection_helper, &selection_changed);
9029
9030   for (list = tree_view->priv->columns; list; list = list->next)
9031     if (gtk_tree_view_column_get_visible (GTK_TREE_VIEW_COLUMN (list->data)) &&
9032         gtk_tree_view_column_get_sizing (GTK_TREE_VIEW_COLUMN (list->data)) == GTK_TREE_VIEW_COLUMN_AUTOSIZE)
9033       _gtk_tree_view_column_cell_set_dirty ((GtkTreeViewColumn *)list->data, TRUE);
9034
9035   /* Ensure we don't have a dangling pointer to a dead node */
9036   ensure_unprelighted (tree_view);
9037
9038   /* Cancel editting if we've started */
9039   gtk_tree_view_stop_editing (tree_view, TRUE);
9040
9041   if (tree_view->priv->destroy_count_func)
9042     {
9043       gint child_count = 0;
9044       if (node->children)
9045         _gtk_rbtree_traverse (node->children, node->children->root, G_POST_ORDER, count_children_helper, &child_count);
9046       tree_view->priv->destroy_count_func (tree_view, path, child_count, tree_view->priv->destroy_count_data);
9047     }
9048
9049   if (tree->root->count == 1)
9050     {
9051       if (tree_view->priv->tree == tree)
9052         tree_view->priv->tree = NULL;
9053
9054       _gtk_tree_view_accessible_remove (tree_view, tree, NULL);
9055       _gtk_rbtree_remove (tree);
9056     }
9057   else
9058     {
9059       _gtk_tree_view_accessible_remove (tree_view, tree, node);
9060       _gtk_rbtree_remove_node (tree, node);
9061     }
9062
9063   if (! gtk_tree_row_reference_valid (tree_view->priv->top_row))
9064     {
9065       gtk_tree_row_reference_free (tree_view->priv->top_row);
9066       tree_view->priv->top_row = NULL;
9067     }
9068
9069   /* Cancel any ongoing animation happening within the row */
9070   context = gtk_widget_get_style_context (GTK_WIDGET (tree_view));
9071   gtk_style_context_cancel_animations (context, node);
9072
9073   install_scroll_sync_handler (tree_view);
9074
9075   gtk_widget_queue_resize (GTK_WIDGET (tree_view));
9076
9077   if (selection_changed)
9078     g_signal_emit_by_name (tree_view->priv->selection, "changed");
9079 }
9080
9081 static void
9082 gtk_tree_view_rows_reordered (GtkTreeModel *model,
9083                               GtkTreePath  *parent,
9084                               GtkTreeIter  *iter,
9085                               gint         *new_order,
9086                               gpointer      data)
9087 {
9088   GtkTreeView *tree_view = GTK_TREE_VIEW (data);
9089   GtkRBTree *tree;
9090   GtkRBNode *node;
9091   gint len;
9092
9093   len = gtk_tree_model_iter_n_children (model, iter);
9094
9095   if (len < 2)
9096     return;
9097
9098   gtk_tree_row_reference_reordered (G_OBJECT (data),
9099                                     parent,
9100                                     iter,
9101                                     new_order);
9102
9103   if (_gtk_tree_view_find_node (tree_view,
9104                                 parent,
9105                                 &tree,
9106                                 &node))
9107     return;
9108
9109   /* We need to special case the parent path */
9110   if (tree == NULL)
9111     tree = tree_view->priv->tree;
9112   else
9113     tree = node->children;
9114
9115   if (tree == NULL)
9116     return;
9117
9118   if (tree_view->priv->edited_column)
9119     gtk_tree_view_stop_editing (tree_view, TRUE);
9120
9121   /* we need to be unprelighted */
9122   ensure_unprelighted (tree_view);
9123
9124   _gtk_rbtree_reorder (tree, new_order, len);
9125
9126   gtk_widget_queue_draw (GTK_WIDGET (tree_view));
9127
9128   gtk_tree_view_dy_to_top_row (tree_view);
9129 }
9130
9131
9132 /* Internal tree functions
9133  */
9134
9135
9136 static void
9137 gtk_tree_view_get_background_xrange (GtkTreeView       *tree_view,
9138                                      GtkRBTree         *tree,
9139                                      GtkTreeViewColumn *column,
9140                                      gint              *x1,
9141                                      gint              *x2)
9142 {
9143   GtkTreeViewColumn *tmp_column = NULL;
9144   gint total_width;
9145   GList *list;
9146   gboolean rtl;
9147
9148   if (x1)
9149     *x1 = 0;
9150
9151   if (x2)
9152     *x2 = 0;
9153
9154   rtl = (gtk_widget_get_direction (GTK_WIDGET (tree_view)) == GTK_TEXT_DIR_RTL);
9155
9156   total_width = 0;
9157   for (list = (rtl ? g_list_last (tree_view->priv->columns) : g_list_first (tree_view->priv->columns));
9158        list;
9159        list = (rtl ? list->prev : list->next))
9160     {
9161       tmp_column = list->data;
9162
9163       if (tmp_column == column)
9164         break;
9165
9166       if (gtk_tree_view_column_get_visible (tmp_column))
9167         total_width += gtk_tree_view_column_get_width (tmp_column);
9168     }
9169
9170   if (tmp_column != column)
9171     {
9172       g_warning (G_STRLOC": passed-in column isn't in the tree");
9173       return;
9174     }
9175
9176   if (x1)
9177     *x1 = total_width;
9178
9179   if (x2)
9180     {
9181       if (gtk_tree_view_column_get_visible (column))
9182         *x2 = total_width + gtk_tree_view_column_get_width (column);
9183       else
9184         *x2 = total_width; /* width of 0 */
9185     }
9186 }
9187
9188 static void
9189 gtk_tree_view_get_arrow_xrange (GtkTreeView *tree_view,
9190                                 GtkRBTree   *tree,
9191                                 gint        *x1,
9192                                 gint        *x2)
9193 {
9194   gint x_offset = 0;
9195   GList *list;
9196   GtkTreeViewColumn *tmp_column = NULL;
9197   gint total_width;
9198   gboolean indent_expanders;
9199   gboolean rtl;
9200
9201   rtl = (gtk_widget_get_direction (GTK_WIDGET (tree_view)) == GTK_TEXT_DIR_RTL);
9202
9203   total_width = 0;
9204   for (list = (rtl ? g_list_last (tree_view->priv->columns) : g_list_first (tree_view->priv->columns));
9205        list;
9206        list = (rtl ? list->prev : list->next))
9207     {
9208       tmp_column = list->data;
9209
9210       if (gtk_tree_view_is_expander_column (tree_view, tmp_column))
9211         {
9212           if (rtl)
9213             x_offset = total_width + gtk_tree_view_column_get_width (tmp_column) - tree_view->priv->expander_size;
9214           else
9215             x_offset = total_width;
9216           break;
9217         }
9218
9219       if (gtk_tree_view_column_get_visible (tmp_column))
9220         total_width += gtk_tree_view_column_get_width (tmp_column);
9221     }
9222
9223   gtk_widget_style_get (GTK_WIDGET (tree_view),
9224                         "indent-expanders", &indent_expanders,
9225                         NULL);
9226
9227   if (indent_expanders)
9228     {
9229       if (rtl)
9230         x_offset -= tree_view->priv->expander_size * _gtk_rbtree_get_depth (tree);
9231       else
9232         x_offset += tree_view->priv->expander_size * _gtk_rbtree_get_depth (tree);
9233     }
9234
9235   *x1 = x_offset;
9236
9237   if (tmp_column &&
9238       gtk_tree_view_column_get_visible (tmp_column))
9239     /* +1 because x2 isn't included in the range. */
9240     *x2 = *x1 + tree_view->priv->expander_size + 1;
9241   else
9242     *x2 = *x1;
9243 }
9244
9245 static void
9246 gtk_tree_view_build_tree (GtkTreeView *tree_view,
9247                           GtkRBTree   *tree,
9248                           GtkTreeIter *iter,
9249                           gint         depth,
9250                           gboolean     recurse)
9251 {
9252   GtkRBNode *temp = NULL;
9253   GtkTreePath *path = NULL;
9254
9255   do
9256     {
9257       gtk_tree_model_ref_node (tree_view->priv->model, iter);
9258       temp = _gtk_rbtree_insert_after (tree, temp, 0, FALSE);
9259
9260       if (tree_view->priv->fixed_height > 0)
9261         {
9262           if (GTK_RBNODE_FLAG_SET (temp, GTK_RBNODE_INVALID))
9263             {
9264               _gtk_rbtree_node_set_height (tree, temp, tree_view->priv->fixed_height);
9265               _gtk_rbtree_node_mark_valid (tree, temp);
9266             }
9267         }
9268
9269       if (tree_view->priv->is_list)
9270         continue;
9271
9272       if (recurse)
9273         {
9274           GtkTreeIter child;
9275
9276           if (!path)
9277             path = gtk_tree_model_get_path (tree_view->priv->model, iter);
9278           else
9279             gtk_tree_path_next (path);
9280
9281           if (gtk_tree_model_iter_children (tree_view->priv->model, &child, iter))
9282             {
9283               gboolean expand;
9284
9285               g_signal_emit (tree_view, tree_view_signals[TEST_EXPAND_ROW], 0, iter, path, &expand);
9286
9287               if (gtk_tree_model_iter_has_child (tree_view->priv->model, iter)
9288                   && !expand)
9289                 {
9290                   temp->children = _gtk_rbtree_new ();
9291                   temp->children->parent_tree = tree;
9292                   temp->children->parent_node = temp;
9293                   gtk_tree_view_build_tree (tree_view, temp->children, &child, depth + 1, recurse);
9294                 }
9295             }
9296         }
9297
9298       if (gtk_tree_model_iter_has_child (tree_view->priv->model, iter))
9299         {
9300           if ((temp->flags&GTK_RBNODE_IS_PARENT) != GTK_RBNODE_IS_PARENT)
9301             temp->flags ^= GTK_RBNODE_IS_PARENT;
9302         }
9303     }
9304   while (gtk_tree_model_iter_next (tree_view->priv->model, iter));
9305
9306   if (path)
9307     gtk_tree_path_free (path);
9308 }
9309
9310 /* Make sure the node is visible vertically */
9311 static void
9312 gtk_tree_view_clamp_node_visible (GtkTreeView *tree_view,
9313                                   GtkRBTree   *tree,
9314                                   GtkRBNode   *node)
9315 {
9316   gint node_dy, height;
9317   GtkTreePath *path = NULL;
9318
9319   if (!gtk_widget_get_realized (GTK_WIDGET (tree_view)))
9320     return;
9321
9322   /* just return if the node is visible, avoiding a costly expose */
9323   node_dy = _gtk_rbtree_node_find_offset (tree, node);
9324   height = gtk_tree_view_get_row_height (tree_view, node);
9325   if (! GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_INVALID)
9326       && node_dy >= gtk_adjustment_get_value (tree_view->priv->vadjustment)
9327       && node_dy + height <= (gtk_adjustment_get_value (tree_view->priv->vadjustment)
9328                               + gtk_adjustment_get_page_size (tree_view->priv->vadjustment)))
9329     return;
9330
9331   path = _gtk_tree_view_find_path (tree_view, tree, node);
9332   if (path)
9333     {
9334       /* We process updates because we want to clear old selected items when we scroll.
9335        * if this is removed, we get a "selection streak" at the bottom. */
9336       gtk_tree_view_bin_process_updates (tree_view);
9337
9338       gtk_tree_view_scroll_to_cell (tree_view, path, NULL, FALSE, 0.0, 0.0);
9339       gtk_tree_path_free (path);
9340     }
9341 }
9342
9343 static void
9344 gtk_tree_view_clamp_column_visible (GtkTreeView       *tree_view,
9345                                     GtkTreeViewColumn *column,
9346                                     gboolean           focus_to_cell)
9347 {
9348   GtkAllocation allocation;
9349   gint x, width;
9350
9351   if (column == NULL)
9352     return;
9353
9354   gtk_widget_get_allocation (gtk_tree_view_column_get_button (column), &allocation);
9355   x = allocation.x;
9356   width = allocation.width;
9357
9358   if (width > gtk_adjustment_get_page_size (tree_view->priv->hadjustment))
9359     {
9360       /* The column is larger than the horizontal page size.  If the
9361        * column has cells which can be focussed individually, then we make
9362        * sure the cell which gets focus is fully visible (if even the
9363        * focus cell is bigger than the page size, we make sure the
9364        * left-hand side of the cell is visible).
9365        *
9366        * If the column does not have an activatable cell, we
9367        * make sure the left-hand side of the column is visible.
9368        */
9369
9370       if (focus_to_cell && gtk_tree_view_has_can_focus_cell (tree_view))
9371         {
9372           GtkCellArea *cell_area;
9373           GtkCellRenderer *focus_cell;
9374
9375           cell_area = gtk_cell_layout_get_area (GTK_CELL_LAYOUT (column));
9376           focus_cell = gtk_cell_area_get_focus_cell (cell_area);
9377
9378           if (gtk_tree_view_column_cell_get_position (column, focus_cell,
9379                                                       &x, &width))
9380             {
9381               if (width < gtk_adjustment_get_page_size (tree_view->priv->hadjustment))
9382                 {
9383                   if (gtk_adjustment_get_value (tree_view->priv->hadjustment) + gtk_adjustment_get_page_size (tree_view->priv->hadjustment) < x + width)
9384                     gtk_adjustment_set_value (tree_view->priv->hadjustment,
9385                                               x + width - gtk_adjustment_get_page_size (tree_view->priv->hadjustment));
9386                   else if (gtk_adjustment_get_value (tree_view->priv->hadjustment) > x)
9387                     gtk_adjustment_set_value (tree_view->priv->hadjustment, x);
9388                 }
9389             }
9390         }
9391
9392       gtk_adjustment_set_value (tree_view->priv->hadjustment, x);
9393     }
9394   else
9395     {
9396       if ((gtk_adjustment_get_value (tree_view->priv->hadjustment) + gtk_adjustment_get_page_size (tree_view->priv->hadjustment)) < (x + width))
9397           gtk_adjustment_set_value (tree_view->priv->hadjustment,
9398                                     x + width - gtk_adjustment_get_page_size (tree_view->priv->hadjustment));
9399       else if (gtk_adjustment_get_value (tree_view->priv->hadjustment) > x)
9400         gtk_adjustment_set_value (tree_view->priv->hadjustment, x);
9401   }
9402 }
9403
9404 /* This function could be more efficient.  I'll optimize it if profiling seems
9405  * to imply that it is important */
9406 GtkTreePath *
9407 _gtk_tree_view_find_path (GtkTreeView *tree_view,
9408                           GtkRBTree   *tree,
9409                           GtkRBNode   *node)
9410 {
9411   GtkTreePath *path;
9412   GtkRBTree *tmp_tree;
9413   GtkRBNode *tmp_node, *last;
9414   gint count;
9415
9416   path = gtk_tree_path_new ();
9417
9418   g_return_val_if_fail (node != NULL, path);
9419   g_return_val_if_fail (node != tree->nil, path);
9420
9421   count = 1 + node->left->count;
9422
9423   last = node;
9424   tmp_node = node->parent;
9425   tmp_tree = tree;
9426   while (tmp_tree)
9427     {
9428       while (tmp_node != tmp_tree->nil)
9429         {
9430           if (tmp_node->right == last)
9431             count += 1 + tmp_node->left->count;
9432           last = tmp_node;
9433           tmp_node = tmp_node->parent;
9434         }
9435       gtk_tree_path_prepend_index (path, count - 1);
9436       last = tmp_tree->parent_node;
9437       tmp_tree = tmp_tree->parent_tree;
9438       if (last)
9439         {
9440           count = 1 + last->left->count;
9441           tmp_node = last->parent;
9442         }
9443     }
9444   return path;
9445 }
9446
9447 /* Returns TRUE if we ran out of tree before finding the path.  If the path is
9448  * invalid (ie. points to a node that's not in the tree), *tree and *node are
9449  * both set to NULL.
9450  */
9451 gboolean
9452 _gtk_tree_view_find_node (GtkTreeView  *tree_view,
9453                           GtkTreePath  *path,
9454                           GtkRBTree   **tree,
9455                           GtkRBNode   **node)
9456 {
9457   GtkRBNode *tmpnode = NULL;
9458   GtkRBTree *tmptree = tree_view->priv->tree;
9459   gint *indices = gtk_tree_path_get_indices (path);
9460   gint depth = gtk_tree_path_get_depth (path);
9461   gint i = 0;
9462
9463   *node = NULL;
9464   *tree = NULL;
9465
9466   if (depth == 0 || tmptree == NULL)
9467     return FALSE;
9468   do
9469     {
9470       tmpnode = _gtk_rbtree_find_count (tmptree, indices[i] + 1);
9471       ++i;
9472       if (tmpnode == NULL)
9473         {
9474           *tree = NULL;
9475           *node = NULL;
9476           return FALSE;
9477         }
9478       if (i >= depth)
9479         {
9480           *tree = tmptree;
9481           *node = tmpnode;
9482           return FALSE;
9483         }
9484       *tree = tmptree;
9485       *node = tmpnode;
9486       tmptree = tmpnode->children;
9487       if (tmptree == NULL)
9488         return TRUE;
9489     }
9490   while (1);
9491 }
9492
9493 static gboolean
9494 gtk_tree_view_is_expander_column (GtkTreeView       *tree_view,
9495                                   GtkTreeViewColumn *column)
9496 {
9497   GList *list;
9498
9499   if (tree_view->priv->is_list)
9500     return FALSE;
9501
9502   if (tree_view->priv->expander_column != NULL)
9503     {
9504       if (tree_view->priv->expander_column == column)
9505         return TRUE;
9506       return FALSE;
9507     }
9508   else
9509     {
9510       for (list = tree_view->priv->columns;
9511            list;
9512            list = list->next)
9513         if (gtk_tree_view_column_get_visible (GTK_TREE_VIEW_COLUMN (list->data)))
9514           break;
9515       if (list && list->data == column)
9516         return TRUE;
9517     }
9518   return FALSE;
9519 }
9520
9521 static inline gboolean
9522 gtk_tree_view_draw_expanders (GtkTreeView *tree_view)
9523 {
9524   if (!tree_view->priv->is_list && tree_view->priv->show_expanders)
9525     return TRUE;
9526   /* else */
9527   return FALSE;
9528 }
9529
9530 static void
9531 gtk_tree_view_add_move_binding (GtkBindingSet  *binding_set,
9532                                 guint           keyval,
9533                                 guint           modmask,
9534                                 gboolean        add_shifted_binding,
9535                                 GtkMovementStep step,
9536                                 gint            count)
9537 {
9538
9539   gtk_binding_entry_add_signal (binding_set, keyval, modmask,
9540                                 "move-cursor", 2,
9541                                 G_TYPE_ENUM, step,
9542                                 G_TYPE_INT, count);
9543
9544   if (add_shifted_binding)
9545     gtk_binding_entry_add_signal (binding_set, keyval, GDK_SHIFT_MASK,
9546                                   "move-cursor", 2,
9547                                   G_TYPE_ENUM, step,
9548                                   G_TYPE_INT, count);
9549
9550   if ((modmask & GDK_CONTROL_MASK) == GDK_CONTROL_MASK)
9551    return;
9552
9553   gtk_binding_entry_add_signal (binding_set, keyval, GDK_CONTROL_MASK | GDK_SHIFT_MASK,
9554                                 "move-cursor", 2,
9555                                 G_TYPE_ENUM, step,
9556                                 G_TYPE_INT, count);
9557
9558   gtk_binding_entry_add_signal (binding_set, keyval, GDK_CONTROL_MASK,
9559                                 "move-cursor", 2,
9560                                 G_TYPE_ENUM, step,
9561                                 G_TYPE_INT, count);
9562 }
9563
9564 static gint
9565 gtk_tree_view_unref_tree_helper (GtkTreeModel *model,
9566                                  GtkTreeIter  *iter,
9567                                  GtkRBTree    *tree,
9568                                  GtkRBNode    *node)
9569 {
9570   gint retval = FALSE;
9571   do
9572     {
9573       g_return_val_if_fail (node != NULL, FALSE);
9574
9575       if (node->children)
9576         {
9577           GtkTreeIter child;
9578           GtkRBTree *new_tree;
9579           GtkRBNode *new_node;
9580
9581           new_tree = node->children;
9582           new_node = new_tree->root;
9583
9584           while (new_node && new_node->left != new_tree->nil)
9585             new_node = new_node->left;
9586
9587           if (!gtk_tree_model_iter_children (model, &child, iter))
9588             return FALSE;
9589
9590           retval = retval || gtk_tree_view_unref_tree_helper (model, &child, new_tree, new_node);
9591         }
9592
9593       if (GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_SELECTED))
9594         retval = TRUE;
9595       gtk_tree_model_unref_node (model, iter);
9596       node = _gtk_rbtree_next (tree, node);
9597     }
9598   while (gtk_tree_model_iter_next (model, iter));
9599
9600   return retval;
9601 }
9602
9603 static gint
9604 gtk_tree_view_unref_and_check_selection_tree (GtkTreeView *tree_view,
9605                                               GtkRBTree   *tree)
9606 {
9607   GtkTreeIter iter;
9608   GtkTreePath *path;
9609   GtkRBNode *node;
9610   gint retval;
9611
9612   if (!tree)
9613     return FALSE;
9614
9615   node = tree->root;
9616   while (node && node->left != tree->nil)
9617     node = node->left;
9618
9619   g_return_val_if_fail (node != NULL, FALSE);
9620   path = _gtk_tree_view_find_path (tree_view, tree, node);
9621   gtk_tree_model_get_iter (GTK_TREE_MODEL (tree_view->priv->model),
9622                            &iter, path);
9623   retval = gtk_tree_view_unref_tree_helper (GTK_TREE_MODEL (tree_view->priv->model), &iter, tree, node);
9624   gtk_tree_path_free (path);
9625
9626   return retval;
9627 }
9628
9629 static void
9630 gtk_tree_view_set_column_drag_info (GtkTreeView       *tree_view,
9631                                     GtkTreeViewColumn *column)
9632 {
9633   GtkTreeViewColumn *left_column;
9634   GtkTreeViewColumn *cur_column = NULL;
9635   GtkTreeViewColumnReorder *reorder;
9636   gboolean rtl;
9637   GList *tmp_list;
9638   gint left;
9639
9640   /* We want to precalculate the motion list such that we know what column slots
9641    * are available.
9642    */
9643   left_column = NULL;
9644   rtl = (gtk_widget_get_direction (GTK_WIDGET (tree_view)) == GTK_TEXT_DIR_RTL);
9645
9646   /* First, identify all possible drop spots */
9647   if (rtl)
9648     tmp_list = g_list_last (tree_view->priv->columns);
9649   else
9650     tmp_list = g_list_first (tree_view->priv->columns);
9651
9652   while (tmp_list)
9653     {
9654       cur_column = GTK_TREE_VIEW_COLUMN (tmp_list->data);
9655       tmp_list = rtl?g_list_previous (tmp_list):g_list_next (tmp_list);
9656
9657       if (gtk_tree_view_column_get_visible (cur_column) == FALSE)
9658         continue;
9659
9660       /* If it's not the column moving and func tells us to skip over the column, we continue. */
9661       if (left_column != column && cur_column != column &&
9662           tree_view->priv->column_drop_func &&
9663           ! tree_view->priv->column_drop_func (tree_view, column, left_column, cur_column, tree_view->priv->column_drop_func_data))
9664         {
9665           left_column = cur_column;
9666           continue;
9667         }
9668       reorder = g_slice_new0 (GtkTreeViewColumnReorder);
9669       reorder->left_column = left_column;
9670       left_column = reorder->right_column = cur_column;
9671
9672       tree_view->priv->column_drag_info = g_list_append (tree_view->priv->column_drag_info, reorder);
9673     }
9674
9675   /* Add the last one */
9676   if (tree_view->priv->column_drop_func == NULL ||
9677       ((left_column != column) &&
9678        tree_view->priv->column_drop_func (tree_view, column, left_column, NULL, tree_view->priv->column_drop_func_data)))
9679     {
9680       reorder = g_slice_new0 (GtkTreeViewColumnReorder);
9681       reorder->left_column = left_column;
9682       reorder->right_column = NULL;
9683       tree_view->priv->column_drag_info = g_list_append (tree_view->priv->column_drag_info, reorder);
9684     }
9685
9686   /* We quickly check to see if it even makes sense to reorder columns. */
9687   /* If there is nothing that can be moved, then we return */
9688
9689   if (tree_view->priv->column_drag_info == NULL)
9690     return;
9691
9692   /* We know there are always 2 slots possbile, as you can always return column. */
9693   /* If that's all there is, return */
9694   if (tree_view->priv->column_drag_info->next == NULL ||
9695       (tree_view->priv->column_drag_info->next->next == NULL &&
9696        ((GtkTreeViewColumnReorder *)tree_view->priv->column_drag_info->data)->right_column == column &&
9697        ((GtkTreeViewColumnReorder *)tree_view->priv->column_drag_info->next->data)->left_column == column))
9698     {
9699       for (tmp_list = tree_view->priv->column_drag_info; tmp_list; tmp_list = tmp_list->next)
9700         g_slice_free (GtkTreeViewColumnReorder, tmp_list->data);
9701       g_list_free (tree_view->priv->column_drag_info);
9702       tree_view->priv->column_drag_info = NULL;
9703       return;
9704     }
9705   /* We fill in the ranges for the columns, now that we've isolated them */
9706   left = - TREE_VIEW_COLUMN_DRAG_DEAD_MULTIPLIER (tree_view);
9707
9708   for (tmp_list = tree_view->priv->column_drag_info; tmp_list; tmp_list = tmp_list->next)
9709     {
9710       reorder = (GtkTreeViewColumnReorder *) tmp_list->data;
9711
9712       reorder->left_align = left;
9713       if (tmp_list->next != NULL)
9714         {
9715           GtkAllocation right_allocation, left_allocation;
9716           GtkWidget    *left_button, *right_button;
9717
9718           g_assert (tmp_list->next->data);
9719
9720           right_button = gtk_tree_view_column_get_button (reorder->right_column);
9721           left_button  = gtk_tree_view_column_get_button
9722             (((GtkTreeViewColumnReorder *)tmp_list->next->data)->left_column);
9723
9724           gtk_widget_get_allocation (right_button, &right_allocation);
9725           gtk_widget_get_allocation (left_button, &left_allocation);
9726           left = reorder->right_align = (right_allocation.x + right_allocation.width + left_allocation.x) / 2;
9727         }
9728       else
9729         {
9730           reorder->right_align = gdk_window_get_width (tree_view->priv->header_window)
9731                                  + TREE_VIEW_COLUMN_DRAG_DEAD_MULTIPLIER (tree_view);
9732         }
9733     }
9734 }
9735
9736 void
9737 _gtk_tree_view_column_start_drag (GtkTreeView       *tree_view,
9738                                   GtkTreeViewColumn *column,
9739                                   GdkDevice         *device)
9740 {
9741   GdkEvent *send_event;
9742   GtkAllocation allocation;
9743   GtkAllocation button_allocation;
9744   GdkScreen *screen = gtk_widget_get_screen (GTK_WIDGET (tree_view));
9745   GtkWidget *button;
9746   GdkDevice *pointer, *keyboard;
9747
9748   g_return_if_fail (tree_view->priv->column_drag_info == NULL);
9749   g_return_if_fail (tree_view->priv->cur_reorder == NULL);
9750
9751   gtk_tree_view_set_column_drag_info (tree_view, column);
9752
9753   if (tree_view->priv->column_drag_info == NULL)
9754     return;
9755
9756   button = gtk_tree_view_column_get_button (column);
9757
9758   if (tree_view->priv->drag_window == NULL)
9759     {
9760       GdkWindowAttr attributes;
9761       guint attributes_mask;
9762
9763       gtk_widget_get_allocation (button, &button_allocation);
9764
9765       attributes.window_type = GDK_WINDOW_CHILD;
9766       attributes.wclass = GDK_INPUT_OUTPUT;
9767       attributes.x = button_allocation.x;
9768       attributes.y = 0;
9769       attributes.width = button_allocation.width;
9770       attributes.height = button_allocation.height;
9771       attributes.visual = gtk_widget_get_visual (GTK_WIDGET (tree_view));
9772       attributes.event_mask = GDK_VISIBILITY_NOTIFY_MASK | GDK_EXPOSURE_MASK | GDK_POINTER_MOTION_MASK;
9773       attributes_mask = GDK_WA_X | GDK_WA_Y | GDK_WA_VISUAL;
9774
9775       tree_view->priv->drag_window = gdk_window_new (tree_view->priv->bin_window,
9776                                                      &attributes,
9777                                                      attributes_mask);
9778       gdk_window_set_user_data (tree_view->priv->drag_window, GTK_WIDGET (tree_view));
9779     }
9780
9781   if (gdk_device_get_source (device) == GDK_SOURCE_KEYBOARD)
9782     {
9783       keyboard = device;
9784       pointer = gdk_device_get_associated_device (device);
9785     }
9786   else
9787     {
9788       pointer = device;
9789       keyboard = gdk_device_get_associated_device (device);
9790     }
9791
9792   gdk_device_ungrab (pointer, GDK_CURRENT_TIME);
9793   gdk_device_ungrab (keyboard, GDK_CURRENT_TIME);
9794
9795   gtk_grab_remove (button);
9796
9797   send_event = gdk_event_new (GDK_LEAVE_NOTIFY);
9798   send_event->crossing.send_event = TRUE;
9799   send_event->crossing.window = g_object_ref (gtk_button_get_event_window (GTK_BUTTON (button)));
9800   send_event->crossing.subwindow = NULL;
9801   send_event->crossing.detail = GDK_NOTIFY_ANCESTOR;
9802   send_event->crossing.time = GDK_CURRENT_TIME;
9803   gdk_event_set_device (send_event, device);
9804
9805   gtk_propagate_event (button, send_event);
9806   gdk_event_free (send_event);
9807
9808   send_event = gdk_event_new (GDK_BUTTON_RELEASE);
9809   send_event->button.window = g_object_ref (gdk_screen_get_root_window (screen));
9810   send_event->button.send_event = TRUE;
9811   send_event->button.time = GDK_CURRENT_TIME;
9812   send_event->button.x = -1;
9813   send_event->button.y = -1;
9814   send_event->button.axes = NULL;
9815   send_event->button.state = 0;
9816   send_event->button.button = 1;
9817   send_event->button.x_root = 0;
9818   send_event->button.y_root = 0;
9819   gdk_event_set_device (send_event, device);
9820
9821   gtk_propagate_event (button, send_event);
9822   gdk_event_free (send_event);
9823
9824   /* Kids, don't try this at home */
9825   g_object_ref (button);
9826   gtk_container_remove (GTK_CONTAINER (tree_view), button);
9827   gtk_widget_set_parent_window (button, tree_view->priv->drag_window);
9828   gtk_widget_set_parent (button, GTK_WIDGET (tree_view));
9829   g_object_unref (button);
9830
9831   gtk_widget_get_allocation (button, &button_allocation);
9832   tree_view->priv->drag_column_x = button_allocation.x;
9833   allocation = button_allocation;
9834   allocation.x = 0;
9835   gtk_widget_size_allocate (button, &allocation);
9836   gtk_widget_set_parent_window (button, tree_view->priv->drag_window);
9837
9838   tree_view->priv->drag_column = column;
9839   gdk_window_show (tree_view->priv->drag_window);
9840
9841   gtk_widget_grab_focus (GTK_WIDGET (tree_view));
9842   while (gtk_events_pending ())
9843     gtk_main_iteration ();
9844
9845   tree_view->priv->in_column_drag = TRUE;
9846
9847   gdk_device_grab (pointer,
9848                    tree_view->priv->drag_window,
9849                    GDK_OWNERSHIP_NONE,
9850                    FALSE,
9851                    GDK_POINTER_MOTION_MASK|GDK_BUTTON_RELEASE_MASK,
9852                    NULL,
9853                    GDK_CURRENT_TIME);
9854   gdk_device_grab (keyboard,
9855                    tree_view->priv->drag_window,
9856                    GDK_OWNERSHIP_NONE,
9857                    FALSE,
9858                    GDK_KEY_PRESS_MASK|GDK_KEY_RELEASE_MASK,
9859                    NULL,
9860                    GDK_CURRENT_TIME);
9861 }
9862
9863 static void
9864 gtk_tree_view_queue_draw_arrow (GtkTreeView        *tree_view,
9865                                 GtkRBTree          *tree,
9866                                 GtkRBNode          *node)
9867 {
9868   GtkAllocation allocation;
9869   GdkRectangle rect;
9870
9871   if (!gtk_widget_get_realized (GTK_WIDGET (tree_view)))
9872     return;
9873
9874   gtk_widget_get_allocation (GTK_WIDGET (tree_view), &allocation);
9875   rect.x = 0;
9876   rect.width = MAX (tree_view->priv->expander_size, MAX (tree_view->priv->width, allocation.width));
9877
9878   rect.y = gtk_tree_view_get_row_y_offset (tree_view, tree, node);
9879   rect.height = gtk_tree_view_get_row_height (tree_view, node);
9880
9881   gdk_window_invalidate_rect (tree_view->priv->bin_window, &rect, TRUE);
9882 }
9883
9884 void
9885 _gtk_tree_view_queue_draw_node (GtkTreeView        *tree_view,
9886                                 GtkRBTree          *tree,
9887                                 GtkRBNode          *node,
9888                                 const GdkRectangle *clip_rect)
9889 {
9890   GtkAllocation allocation;
9891   GdkRectangle rect;
9892
9893   if (!gtk_widget_get_realized (GTK_WIDGET (tree_view)))
9894     return;
9895
9896   gtk_widget_get_allocation (GTK_WIDGET (tree_view), &allocation);
9897   rect.x = 0;
9898   rect.width = MAX (tree_view->priv->width, allocation.width);
9899
9900   rect.y = gtk_tree_view_get_row_y_offset (tree_view, tree, node);
9901   rect.height = gtk_tree_view_get_row_height (tree_view, node);
9902
9903   if (clip_rect)
9904     {
9905       GdkRectangle new_rect;
9906
9907       gdk_rectangle_intersect (clip_rect, &rect, &new_rect);
9908
9909       gdk_window_invalidate_rect (tree_view->priv->bin_window, &new_rect, TRUE);
9910     }
9911   else
9912     {
9913       gdk_window_invalidate_rect (tree_view->priv->bin_window, &rect, TRUE);
9914     }
9915 }
9916
9917 static inline gint
9918 gtk_tree_view_get_effective_header_height (GtkTreeView *tree_view)
9919 {
9920   if (tree_view->priv->headers_visible)
9921     return tree_view->priv->header_height;
9922   /* else */
9923   return 0;
9924 }
9925
9926 gint
9927 _gtk_tree_view_get_header_height (GtkTreeView *tree_view)
9928 {
9929   return tree_view->priv->header_height;
9930 }
9931
9932 void
9933 _gtk_tree_view_get_row_separator_func (GtkTreeView                 *tree_view,
9934                                        GtkTreeViewRowSeparatorFunc *func,
9935                                        gpointer                    *data)
9936 {
9937   *func = tree_view->priv->row_separator_func;
9938   *data = tree_view->priv->row_separator_data;
9939 }
9940
9941 GtkTreePath *
9942 _gtk_tree_view_get_anchor_path (GtkTreeView *tree_view)
9943 {
9944   if (tree_view->priv->anchor)
9945     return gtk_tree_row_reference_get_path (tree_view->priv->anchor);
9946
9947   return NULL;
9948 }
9949
9950 void
9951 _gtk_tree_view_set_anchor_path (GtkTreeView *tree_view,
9952                                 GtkTreePath *anchor_path)
9953 {
9954   if (tree_view->priv->anchor)
9955     {
9956       gtk_tree_row_reference_free (tree_view->priv->anchor);
9957       tree_view->priv->anchor = NULL;
9958     }
9959
9960   if (anchor_path && tree_view->priv->model)
9961     tree_view->priv->anchor =
9962       gtk_tree_row_reference_new_proxy (G_OBJECT (tree_view),
9963                                         tree_view->priv->model, anchor_path);
9964 }
9965
9966 GtkRBTree *
9967 _gtk_tree_view_get_rbtree (GtkTreeView *tree_view)
9968 {
9969   return tree_view->priv->tree;
9970 }
9971
9972 GdkWindow *
9973 _gtk_tree_view_get_header_window (GtkTreeView *tree_view)
9974 {
9975   return tree_view->priv->header_window;
9976 }
9977
9978 void
9979 _gtk_tree_view_set_focus_column (GtkTreeView       *tree_view,
9980                                  GtkTreeViewColumn *column)
9981 {
9982   tree_view->priv->focus_column = column;
9983 }
9984
9985
9986 static void
9987 gtk_tree_view_queue_draw_path (GtkTreeView        *tree_view,
9988                                GtkTreePath        *path,
9989                                const GdkRectangle *clip_rect)
9990 {
9991   GtkRBTree *tree = NULL;
9992   GtkRBNode *node = NULL;
9993
9994   _gtk_tree_view_find_node (tree_view, path, &tree, &node);
9995
9996   if (tree)
9997     _gtk_tree_view_queue_draw_node (tree_view, tree, node, clip_rect);
9998 }
9999
10000 /* x and y are the mouse position
10001  */
10002 static void
10003 gtk_tree_view_draw_arrow (GtkTreeView *tree_view,
10004                           cairo_t     *cr,
10005                           GtkRBTree   *tree,
10006                           GtkRBNode   *node)
10007 {
10008   GdkRectangle area;
10009   GtkStateFlags state = 0;
10010   GtkStyleContext *context;
10011   GtkWidget *widget;
10012   gint x_offset = 0;
10013   gint x2;
10014   gint vertical_separator;
10015   gint expander_size;
10016   GtkCellRendererState flags;
10017
10018   widget = GTK_WIDGET (tree_view);
10019   context = gtk_widget_get_style_context (widget);
10020
10021   gtk_widget_style_get (widget,
10022                         "vertical-separator", &vertical_separator,
10023                         NULL);
10024   expander_size = tree_view->priv->expander_size - EXPANDER_EXTRA_PADDING;
10025
10026   if (! GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_PARENT))
10027     return;
10028
10029   gtk_tree_view_get_arrow_xrange (tree_view, tree, &x_offset, &x2);
10030
10031   area.x = x_offset;
10032   area.y = gtk_tree_view_get_cell_area_y_offset (tree_view, tree, node,
10033                                                  vertical_separator);
10034   area.width = expander_size;
10035   area.height = gtk_tree_view_get_cell_area_height (tree_view, node,
10036                                                     vertical_separator);
10037
10038   if (!gtk_widget_get_sensitive (widget))
10039     state |= GTK_STATE_FLAG_INSENSITIVE;
10040   else
10041     {
10042       flags = 0;
10043
10044       if (GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_SELECTED))
10045         flags |= GTK_CELL_RENDERER_SELECTED;
10046
10047       state = gtk_cell_renderer_get_state (NULL, widget, flags);
10048
10049       if (node == tree_view->priv->prelight_node &&
10050           tree_view->priv->arrow_prelit)
10051         state |= GTK_STATE_FLAG_PRELIGHT;
10052     }
10053
10054   if (node->children != NULL)
10055     state |= GTK_STATE_FLAG_ACTIVE;
10056
10057   gtk_style_context_save (context);
10058
10059   gtk_style_context_set_state (context, state);
10060   gtk_style_context_add_class (context, GTK_STYLE_CLASS_EXPANDER);
10061
10062   gtk_style_context_push_animatable_region (context, node);
10063
10064   gtk_render_expander (context, cr,
10065                        area.x, area.y,
10066                        area.width, area.height);
10067
10068   gtk_style_context_pop_animatable_region (context);
10069   gtk_style_context_restore (context);
10070 }
10071
10072 static void
10073 gtk_tree_view_focus_to_cursor (GtkTreeView *tree_view)
10074
10075 {
10076   GtkTreePath *cursor_path;
10077
10078   if ((tree_view->priv->tree == NULL) ||
10079       (! gtk_widget_get_realized (GTK_WIDGET (tree_view))))
10080     return;
10081
10082   cursor_path = NULL;
10083   if (tree_view->priv->cursor)
10084     cursor_path = gtk_tree_row_reference_get_path (tree_view->priv->cursor);
10085
10086   if (cursor_path == NULL)
10087     {
10088       /* Consult the selection before defaulting to the
10089        * first focusable element
10090        */
10091       GList *selected_rows;
10092       GtkTreeModel *model;
10093       GtkTreeSelection *selection;
10094
10095       selection = gtk_tree_view_get_selection (tree_view);
10096       selected_rows = gtk_tree_selection_get_selected_rows (selection, &model);
10097
10098       if (selected_rows)
10099         {
10100           cursor_path = gtk_tree_path_copy((const GtkTreePath *)(selected_rows->data));
10101           g_list_foreach (selected_rows, (GFunc)gtk_tree_path_free, NULL);
10102           g_list_free (selected_rows);
10103         }
10104       else
10105         {
10106           cursor_path = gtk_tree_path_new_first ();
10107           search_first_focusable_path (tree_view, &cursor_path,
10108                                        TRUE, NULL, NULL);
10109         }
10110
10111       gtk_tree_row_reference_free (tree_view->priv->cursor);
10112       tree_view->priv->cursor = NULL;
10113
10114       if (cursor_path)
10115         {
10116           if (gtk_tree_selection_get_mode (tree_view->priv->selection) == GTK_SELECTION_MULTIPLE)
10117             gtk_tree_view_real_set_cursor (tree_view, cursor_path, FALSE, FALSE);
10118           else
10119             gtk_tree_view_real_set_cursor (tree_view, cursor_path, TRUE, FALSE);
10120         }
10121     }
10122
10123   if (cursor_path)
10124     {
10125       tree_view->priv->draw_keyfocus = TRUE;
10126
10127       gtk_tree_view_queue_draw_path (tree_view, cursor_path, NULL);
10128       gtk_tree_path_free (cursor_path);
10129
10130       if (tree_view->priv->focus_column == NULL)
10131         {
10132           GList *list;
10133           for (list = tree_view->priv->columns; list; list = list->next)
10134             {
10135               if (gtk_tree_view_column_get_visible (GTK_TREE_VIEW_COLUMN (list->data)))
10136                 {
10137                   GtkCellArea *cell_area;
10138
10139                   tree_view->priv->focus_column = GTK_TREE_VIEW_COLUMN (list->data);
10140
10141                   /* This happens when the treeview initially grabs focus and there
10142                    * is no column in focus, here we explicitly focus into the first cell */
10143                   cell_area = gtk_cell_layout_get_area (GTK_CELL_LAYOUT (tree_view->priv->focus_column));
10144                   if (!gtk_cell_area_get_focus_cell (cell_area))
10145                     {
10146                       gboolean rtl;
10147
10148                       rtl = (gtk_widget_get_direction (GTK_WIDGET (tree_view)) == GTK_TEXT_DIR_RTL);
10149                       gtk_cell_area_focus (cell_area,
10150                                            rtl ? GTK_DIR_LEFT : GTK_DIR_RIGHT);
10151                     }
10152
10153                   break;
10154                 }
10155             }
10156         }
10157     }
10158 }
10159
10160 static void
10161 gtk_tree_view_move_cursor_up_down (GtkTreeView *tree_view,
10162                                    gint         count)
10163 {
10164   gint selection_count;
10165   GtkRBTree *cursor_tree = NULL;
10166   GtkRBNode *cursor_node = NULL;
10167   GtkRBTree *new_cursor_tree = NULL;
10168   GtkRBNode *new_cursor_node = NULL;
10169   GtkTreePath *cursor_path = NULL;
10170   gboolean grab_focus = TRUE;
10171   gboolean selectable;
10172   GtkDirectionType direction;
10173   GtkCellArea *cell_area = NULL;
10174   GtkCellRenderer *last_focus_cell = NULL;
10175   GtkTreeIter iter;
10176
10177   if (! gtk_widget_has_focus (GTK_WIDGET (tree_view)))
10178     return;
10179
10180   cursor_path = NULL;
10181   if (!gtk_tree_row_reference_valid (tree_view->priv->cursor))
10182     /* FIXME: we lost the cursor; should we get the first? */
10183     return;
10184
10185   cursor_path = gtk_tree_row_reference_get_path (tree_view->priv->cursor);
10186   _gtk_tree_view_find_node (tree_view, cursor_path,
10187                             &cursor_tree, &cursor_node);
10188
10189   if (cursor_tree == NULL)
10190     /* FIXME: we lost the cursor; should we get the first? */
10191     return;
10192
10193   direction = count < 0 ? GTK_DIR_UP : GTK_DIR_DOWN;
10194
10195   if (tree_view->priv->focus_column)
10196     cell_area = gtk_cell_layout_get_area (GTK_CELL_LAYOUT (tree_view->priv->focus_column));
10197
10198   /* If focus stays in the area for this row, then just return for this round */
10199   if (cell_area && (count == -1 || count == 1) &&
10200       gtk_tree_model_get_iter (tree_view->priv->model, &iter, cursor_path))
10201     {
10202       gtk_tree_view_column_cell_set_cell_data (tree_view->priv->focus_column,
10203                                                tree_view->priv->model,
10204                                                &iter,
10205                                                GTK_RBNODE_FLAG_SET (cursor_node, GTK_RBNODE_IS_PARENT),
10206                                                cursor_node->children?TRUE:FALSE);
10207
10208       /* Save the last cell that had focus, if we hit the end of the view we'll give
10209        * focus back to it. */
10210       last_focus_cell = gtk_cell_area_get_focus_cell (cell_area);
10211
10212       /* If focus stays in the area, no need to change the cursor row */
10213       if (gtk_cell_area_focus (cell_area, direction))
10214         return;
10215     }
10216
10217   selection_count = gtk_tree_selection_count_selected_rows (tree_view->priv->selection);
10218   selectable = _gtk_tree_selection_row_is_selectable (tree_view->priv->selection,
10219                                                       cursor_node,
10220                                                       cursor_path);
10221
10222   if (selection_count == 0
10223       && gtk_tree_selection_get_mode (tree_view->priv->selection) != GTK_SELECTION_NONE
10224       && !tree_view->priv->modify_selection_pressed
10225       && selectable)
10226     {
10227       /* Don't move the cursor, but just select the current node */
10228       new_cursor_tree = cursor_tree;
10229       new_cursor_node = cursor_node;
10230     }
10231   else
10232     {
10233       if (count == -1)
10234         _gtk_rbtree_prev_full (cursor_tree, cursor_node,
10235                                &new_cursor_tree, &new_cursor_node);
10236       else
10237         _gtk_rbtree_next_full (cursor_tree, cursor_node,
10238                                &new_cursor_tree, &new_cursor_node);
10239     }
10240
10241   gtk_tree_path_free (cursor_path);
10242
10243   if (new_cursor_node)
10244     {
10245       cursor_path = _gtk_tree_view_find_path (tree_view,
10246                                               new_cursor_tree, new_cursor_node);
10247
10248       search_first_focusable_path (tree_view, &cursor_path,
10249                                    (count != -1),
10250                                    &new_cursor_tree,
10251                                    &new_cursor_node);
10252
10253       if (cursor_path)
10254         gtk_tree_path_free (cursor_path);
10255     }
10256
10257   /*
10258    * If the list has only one item and multi-selection is set then select
10259    * the row (if not yet selected).
10260    */
10261   if (gtk_tree_selection_get_mode (tree_view->priv->selection) == GTK_SELECTION_MULTIPLE &&
10262       new_cursor_node == NULL)
10263     {
10264       if (count == -1)
10265         _gtk_rbtree_next_full (cursor_tree, cursor_node,
10266                                &new_cursor_tree, &new_cursor_node);
10267       else
10268         _gtk_rbtree_prev_full (cursor_tree, cursor_node,
10269                                &new_cursor_tree, &new_cursor_node);
10270
10271       if (new_cursor_node == NULL
10272           && !GTK_RBNODE_FLAG_SET (cursor_node, GTK_RBNODE_IS_SELECTED))
10273         {
10274           new_cursor_node = cursor_node;
10275           new_cursor_tree = cursor_tree;
10276         }
10277       else
10278         {
10279           new_cursor_node = NULL;
10280         }
10281     }
10282
10283   if (new_cursor_node)
10284     {
10285       cursor_path = _gtk_tree_view_find_path (tree_view, new_cursor_tree, new_cursor_node);
10286       gtk_tree_view_real_set_cursor (tree_view, cursor_path, TRUE, TRUE);
10287       gtk_tree_path_free (cursor_path);
10288
10289       /* Give focus to the area in the new row */
10290       if (cell_area)
10291         gtk_cell_area_focus (cell_area, direction);
10292     }
10293   else
10294     {
10295       gtk_tree_view_clamp_node_visible (tree_view, cursor_tree, cursor_node);
10296
10297       if (!tree_view->priv->extend_selection_pressed)
10298         {
10299           if (! gtk_widget_keynav_failed (GTK_WIDGET (tree_view),
10300                                           count < 0 ?
10301                                           GTK_DIR_UP : GTK_DIR_DOWN))
10302             {
10303               GtkWidget *toplevel = gtk_widget_get_toplevel (GTK_WIDGET (tree_view));
10304
10305               if (toplevel)
10306                 gtk_widget_child_focus (toplevel,
10307                                         count < 0 ?
10308                                         GTK_DIR_TAB_BACKWARD :
10309                                         GTK_DIR_TAB_FORWARD);
10310
10311               grab_focus = FALSE;
10312             }
10313         }
10314       else
10315         {
10316           gtk_widget_error_bell (GTK_WIDGET (tree_view));
10317         }
10318
10319       if (cell_area)
10320         gtk_cell_area_set_focus_cell (cell_area, last_focus_cell);
10321     }
10322
10323   if (grab_focus)
10324     gtk_widget_grab_focus (GTK_WIDGET (tree_view));
10325 }
10326
10327 static void
10328 gtk_tree_view_move_cursor_page_up_down (GtkTreeView *tree_view,
10329                                         gint         count)
10330 {
10331   GtkRBTree *cursor_tree = NULL;
10332   GtkRBNode *cursor_node = NULL;
10333   GtkTreePath *old_cursor_path = NULL;
10334   GtkTreePath *cursor_path = NULL;
10335   GtkRBTree *start_cursor_tree = NULL;
10336   GtkRBNode *start_cursor_node = NULL;
10337   gint y;
10338   gint window_y;
10339   gint vertical_separator;
10340
10341   if (!gtk_widget_has_focus (GTK_WIDGET (tree_view)))
10342     return;
10343
10344   if (gtk_tree_row_reference_valid (tree_view->priv->cursor))
10345     old_cursor_path = gtk_tree_row_reference_get_path (tree_view->priv->cursor);
10346   else
10347     /* This is sorta weird.  Focus in should give us a cursor */
10348     return;
10349
10350   gtk_widget_style_get (GTK_WIDGET (tree_view), "vertical-separator", &vertical_separator, NULL);
10351   _gtk_tree_view_find_node (tree_view, old_cursor_path,
10352                             &cursor_tree, &cursor_node);
10353
10354   if (cursor_tree == NULL)
10355     {
10356       /* FIXME: we lost the cursor.  Should we try to get one? */
10357       gtk_tree_path_free (old_cursor_path);
10358       return;
10359     }
10360   g_return_if_fail (cursor_node != NULL);
10361
10362   y = _gtk_rbtree_node_find_offset (cursor_tree, cursor_node);
10363   window_y = RBTREE_Y_TO_TREE_WINDOW_Y (tree_view, y);
10364   y += tree_view->priv->cursor_offset;
10365   y += count * (int)gtk_adjustment_get_page_increment (tree_view->priv->vadjustment);
10366   y = CLAMP (y, (gint)gtk_adjustment_get_lower (tree_view->priv->vadjustment),  (gint)gtk_adjustment_get_upper (tree_view->priv->vadjustment) - vertical_separator);
10367
10368   if (y >= tree_view->priv->height)
10369     y = tree_view->priv->height - 1;
10370
10371   tree_view->priv->cursor_offset =
10372     _gtk_rbtree_find_offset (tree_view->priv->tree, y,
10373                              &cursor_tree, &cursor_node);
10374
10375   if (cursor_tree == NULL)
10376     {
10377       /* FIXME: we lost the cursor.  Should we try to get one? */
10378       gtk_tree_path_free (old_cursor_path);
10379       return;
10380     }
10381
10382   if (tree_view->priv->cursor_offset
10383       > gtk_tree_view_get_row_height (tree_view, cursor_node))
10384     {
10385       _gtk_rbtree_next_full (cursor_tree, cursor_node,
10386                              &cursor_tree, &cursor_node);
10387       tree_view->priv->cursor_offset -= gtk_tree_view_get_row_height (tree_view, cursor_node);
10388     }
10389
10390   y -= tree_view->priv->cursor_offset;
10391   cursor_path = _gtk_tree_view_find_path (tree_view, cursor_tree, cursor_node);
10392
10393   start_cursor_tree = cursor_tree;
10394   start_cursor_node = cursor_node;
10395
10396   if (! search_first_focusable_path (tree_view, &cursor_path,
10397                                      (count != -1),
10398                                      &cursor_tree, &cursor_node))
10399     {
10400       /* It looks like we reached the end of the view without finding
10401        * a focusable row.  We will step backwards to find the last
10402        * focusable row.
10403        */
10404       cursor_tree = start_cursor_tree;
10405       cursor_node = start_cursor_node;
10406       cursor_path = _gtk_tree_view_find_path (tree_view, cursor_tree, cursor_node);
10407
10408       search_first_focusable_path (tree_view, &cursor_path,
10409                                    (count == -1),
10410                                    &cursor_tree, &cursor_node);
10411     }
10412
10413   if (!cursor_path)
10414     goto cleanup;
10415
10416   /* update y */
10417   y = _gtk_rbtree_node_find_offset (cursor_tree, cursor_node);
10418
10419   gtk_tree_view_real_set_cursor (tree_view, cursor_path, TRUE, FALSE);
10420
10421   y -= window_y;
10422   gtk_tree_view_scroll_to_point (tree_view, -1, y);
10423   gtk_tree_view_clamp_node_visible (tree_view, cursor_tree, cursor_node);
10424   _gtk_tree_view_queue_draw_node (tree_view, cursor_tree, cursor_node, NULL);
10425
10426   if (!gtk_tree_path_compare (old_cursor_path, cursor_path))
10427     gtk_widget_error_bell (GTK_WIDGET (tree_view));
10428
10429   gtk_widget_grab_focus (GTK_WIDGET (tree_view));
10430
10431 cleanup:
10432   gtk_tree_path_free (old_cursor_path);
10433   gtk_tree_path_free (cursor_path);
10434 }
10435
10436 static void
10437 gtk_tree_view_move_cursor_left_right (GtkTreeView *tree_view,
10438                                       gint         count)
10439 {
10440   GtkRBTree *cursor_tree = NULL;
10441   GtkRBNode *cursor_node = NULL;
10442   GtkTreePath *cursor_path = NULL;
10443   GtkTreeViewColumn *column;
10444   GtkTreeIter iter;
10445   GList *list;
10446   gboolean found_column = FALSE;
10447   gboolean rtl;
10448   GtkDirectionType direction;
10449   GtkCellArea     *cell_area;
10450   GtkCellRenderer *last_focus_cell = NULL;
10451   GtkCellArea     *last_focus_area = NULL;
10452
10453   rtl = (gtk_widget_get_direction (GTK_WIDGET (tree_view)) == GTK_TEXT_DIR_RTL);
10454
10455   if (!gtk_widget_has_focus (GTK_WIDGET (tree_view)))
10456     return;
10457
10458   if (gtk_tree_row_reference_valid (tree_view->priv->cursor))
10459     cursor_path = gtk_tree_row_reference_get_path (tree_view->priv->cursor);
10460   else
10461     return;
10462
10463   _gtk_tree_view_find_node (tree_view, cursor_path, &cursor_tree, &cursor_node);
10464   if (cursor_tree == NULL)
10465     return;
10466   if (gtk_tree_model_get_iter (tree_view->priv->model, &iter, cursor_path) == FALSE)
10467     {
10468       gtk_tree_path_free (cursor_path);
10469       return;
10470     }
10471   gtk_tree_path_free (cursor_path);
10472
10473   list = rtl ? g_list_last (tree_view->priv->columns) : g_list_first (tree_view->priv->columns);
10474   if (tree_view->priv->focus_column)
10475     {
10476       /* Save the cell/area we are moving focus from, if moving the cursor
10477        * by one step hits the end we'll set focus back here */
10478       last_focus_area = gtk_cell_layout_get_area (GTK_CELL_LAYOUT (tree_view->priv->focus_column));
10479       last_focus_cell = gtk_cell_area_get_focus_cell (last_focus_area);
10480
10481       for (; list; list = (rtl ? list->prev : list->next))
10482         {
10483           if (list->data == tree_view->priv->focus_column)
10484             break;
10485         }
10486     }
10487
10488   direction = count > 0 ? GTK_DIR_RIGHT : GTK_DIR_LEFT;
10489
10490   while (list)
10491     {
10492       column = list->data;
10493       if (gtk_tree_view_column_get_visible (column) == FALSE)
10494         goto loop_end;
10495
10496       gtk_tree_view_column_cell_set_cell_data (column,
10497                                                tree_view->priv->model,
10498                                                &iter,
10499                                                GTK_RBNODE_FLAG_SET (cursor_node, GTK_RBNODE_IS_PARENT),
10500                                                cursor_node->children?TRUE:FALSE);
10501
10502       cell_area = gtk_cell_layout_get_area (GTK_CELL_LAYOUT (column));
10503       if (gtk_cell_area_focus (cell_area, direction))
10504         {
10505           tree_view->priv->focus_column = column;
10506           found_column = TRUE;
10507           break;
10508         }
10509
10510     loop_end:
10511       if (count == 1)
10512         list = rtl ? list->prev : list->next;
10513       else
10514         list = rtl ? list->next : list->prev;
10515     }
10516
10517   if (found_column)
10518     {
10519       if (!gtk_tree_view_has_can_focus_cell (tree_view))
10520         _gtk_tree_view_queue_draw_node (tree_view,
10521                                         cursor_tree,
10522                                         cursor_node,
10523                                         NULL);
10524       g_signal_emit (tree_view, tree_view_signals[CURSOR_CHANGED], 0);
10525       gtk_widget_grab_focus (GTK_WIDGET (tree_view));
10526     }
10527   else
10528     {
10529       gtk_widget_error_bell (GTK_WIDGET (tree_view));
10530
10531       if (last_focus_area)
10532         gtk_cell_area_set_focus_cell (last_focus_area, last_focus_cell);
10533     }
10534
10535   gtk_tree_view_clamp_column_visible (tree_view,
10536                                       tree_view->priv->focus_column, TRUE);
10537 }
10538
10539 static void
10540 gtk_tree_view_move_cursor_start_end (GtkTreeView *tree_view,
10541                                      gint         count)
10542 {
10543   GtkRBTree *cursor_tree;
10544   GtkRBNode *cursor_node;
10545   GtkTreePath *path;
10546   GtkTreePath *old_path;
10547
10548   if (!gtk_widget_has_focus (GTK_WIDGET (tree_view)))
10549     return;
10550
10551   g_return_if_fail (tree_view->priv->tree != NULL);
10552
10553   gtk_tree_view_get_cursor (tree_view, &old_path, NULL);
10554
10555   cursor_tree = tree_view->priv->tree;
10556   cursor_node = cursor_tree->root;
10557
10558   if (count == -1)
10559     {
10560       while (cursor_node && cursor_node->left != cursor_tree->nil)
10561         cursor_node = cursor_node->left;
10562
10563       /* Now go forward to find the first focusable row. */
10564       path = _gtk_tree_view_find_path (tree_view, cursor_tree, cursor_node);
10565       search_first_focusable_path (tree_view, &path,
10566                                    TRUE, &cursor_tree, &cursor_node);
10567     }
10568   else
10569     {
10570       do
10571         {
10572           while (cursor_node && cursor_node->right != cursor_tree->nil)
10573             cursor_node = cursor_node->right;
10574           if (cursor_node->children == NULL)
10575             break;
10576
10577           cursor_tree = cursor_node->children;
10578           cursor_node = cursor_tree->root;
10579         }
10580       while (1);
10581
10582       /* Now go backwards to find last focusable row. */
10583       path = _gtk_tree_view_find_path (tree_view, cursor_tree, cursor_node);
10584       search_first_focusable_path (tree_view, &path,
10585                                    FALSE, &cursor_tree, &cursor_node);
10586     }
10587
10588   if (!path)
10589     goto cleanup;
10590
10591   if (gtk_tree_path_compare (old_path, path))
10592     {
10593       gtk_tree_view_real_set_cursor (tree_view, path, TRUE, TRUE);
10594       gtk_widget_grab_focus (GTK_WIDGET (tree_view));
10595     }
10596   else
10597     {
10598       gtk_widget_error_bell (GTK_WIDGET (tree_view));
10599     }
10600
10601 cleanup:
10602   gtk_tree_path_free (old_path);
10603   gtk_tree_path_free (path);
10604 }
10605
10606 static gboolean
10607 gtk_tree_view_real_select_all (GtkTreeView *tree_view)
10608 {
10609   if (!gtk_widget_has_focus (GTK_WIDGET (tree_view)))
10610     return FALSE;
10611
10612   if (gtk_tree_selection_get_mode (tree_view->priv->selection) != GTK_SELECTION_MULTIPLE)
10613     return FALSE;
10614
10615   gtk_tree_selection_select_all (tree_view->priv->selection);
10616
10617   return TRUE;
10618 }
10619
10620 static gboolean
10621 gtk_tree_view_real_unselect_all (GtkTreeView *tree_view)
10622 {
10623   if (!gtk_widget_has_focus (GTK_WIDGET (tree_view)))
10624     return FALSE;
10625
10626   if (gtk_tree_selection_get_mode (tree_view->priv->selection) != GTK_SELECTION_MULTIPLE)
10627     return FALSE;
10628
10629   gtk_tree_selection_unselect_all (tree_view->priv->selection);
10630
10631   return TRUE;
10632 }
10633
10634 static gboolean
10635 gtk_tree_view_real_select_cursor_row (GtkTreeView *tree_view,
10636                                       gboolean     start_editing)
10637 {
10638   GtkRBTree *new_tree = NULL;
10639   GtkRBNode *new_node = NULL;
10640   GtkRBTree *cursor_tree = NULL;
10641   GtkRBNode *cursor_node = NULL;
10642   GtkTreePath *cursor_path = NULL;
10643   GtkTreeSelectMode mode = 0;
10644
10645   if (!gtk_widget_has_focus (GTK_WIDGET (tree_view)))
10646     return FALSE;
10647
10648   if (tree_view->priv->cursor)
10649     cursor_path = gtk_tree_row_reference_get_path (tree_view->priv->cursor);
10650
10651   if (cursor_path == NULL)
10652     return FALSE;
10653
10654   _gtk_tree_view_find_node (tree_view, cursor_path,
10655                             &cursor_tree, &cursor_node);
10656
10657   if (cursor_tree == NULL)
10658     {
10659       gtk_tree_path_free (cursor_path);
10660       return FALSE;
10661     }
10662
10663   if (!tree_view->priv->extend_selection_pressed && start_editing &&
10664       tree_view->priv->focus_column)
10665     {
10666       if (gtk_tree_view_start_editing (tree_view, cursor_path, FALSE))
10667         {
10668           gtk_tree_path_free (cursor_path);
10669           return TRUE;
10670         }
10671     }
10672
10673   if (tree_view->priv->modify_selection_pressed)
10674     mode |= GTK_TREE_SELECT_MODE_TOGGLE;
10675   if (tree_view->priv->extend_selection_pressed)
10676     mode |= GTK_TREE_SELECT_MODE_EXTEND;
10677
10678   _gtk_tree_selection_internal_select_node (tree_view->priv->selection,
10679                                             cursor_node,
10680                                             cursor_tree,
10681                                             cursor_path,
10682                                             mode,
10683                                             FALSE);
10684
10685   /* We bail out if the original (tree, node) don't exist anymore after
10686    * handling the selection-changed callback.  We do return TRUE because
10687    * the key press has been handled at this point.
10688    */
10689   _gtk_tree_view_find_node (tree_view, cursor_path, &new_tree, &new_node);
10690
10691   if (cursor_tree != new_tree || cursor_node != new_node)
10692     return FALSE;
10693
10694   gtk_tree_view_clamp_node_visible (tree_view, cursor_tree, cursor_node);
10695
10696   gtk_widget_grab_focus (GTK_WIDGET (tree_view));
10697   _gtk_tree_view_queue_draw_node (tree_view, cursor_tree, cursor_node, NULL);
10698
10699   if (!tree_view->priv->extend_selection_pressed)
10700     gtk_tree_view_row_activated (tree_view, cursor_path,
10701                                  tree_view->priv->focus_column);
10702
10703   gtk_tree_path_free (cursor_path);
10704
10705   return TRUE;
10706 }
10707
10708 static gboolean
10709 gtk_tree_view_real_toggle_cursor_row (GtkTreeView *tree_view)
10710 {
10711   GtkRBTree *new_tree = NULL;
10712   GtkRBNode *new_node = NULL;
10713   GtkRBTree *cursor_tree = NULL;
10714   GtkRBNode *cursor_node = NULL;
10715   GtkTreePath *cursor_path = NULL;
10716
10717   if (!gtk_widget_has_focus (GTK_WIDGET (tree_view)))
10718     return FALSE;
10719
10720   cursor_path = NULL;
10721   if (tree_view->priv->cursor)
10722     cursor_path = gtk_tree_row_reference_get_path (tree_view->priv->cursor);
10723
10724   if (cursor_path == NULL)
10725     return FALSE;
10726
10727   _gtk_tree_view_find_node (tree_view, cursor_path,
10728                             &cursor_tree, &cursor_node);
10729   if (cursor_tree == NULL)
10730     {
10731       gtk_tree_path_free (cursor_path);
10732       return FALSE;
10733     }
10734
10735   _gtk_tree_selection_internal_select_node (tree_view->priv->selection,
10736                                             cursor_node,
10737                                             cursor_tree,
10738                                             cursor_path,
10739                                             GTK_TREE_SELECT_MODE_TOGGLE,
10740                                             FALSE);
10741
10742   /* We bail out if the original (tree, node) don't exist anymore after
10743    * handling the selection-changed callback.  We do return TRUE because
10744    * the key press has been handled at this point.
10745    */
10746   _gtk_tree_view_find_node (tree_view, cursor_path, &new_tree, &new_node);
10747
10748   if (cursor_tree != new_tree || cursor_node != new_node)
10749     return FALSE;
10750
10751   gtk_tree_view_clamp_node_visible (tree_view, cursor_tree, cursor_node);
10752
10753   gtk_widget_grab_focus (GTK_WIDGET (tree_view));
10754   gtk_tree_view_queue_draw_path (tree_view, cursor_path, NULL);
10755   gtk_tree_path_free (cursor_path);
10756
10757   return TRUE;
10758 }
10759
10760 static gboolean
10761 gtk_tree_view_real_expand_collapse_cursor_row (GtkTreeView *tree_view,
10762                                                gboolean     logical,
10763                                                gboolean     expand,
10764                                                gboolean     open_all)
10765 {
10766   GtkTreePath *cursor_path = NULL;
10767   GtkRBTree *tree;
10768   GtkRBNode *node;
10769
10770   if (!gtk_widget_has_focus (GTK_WIDGET (tree_view)))
10771     return FALSE;
10772
10773   cursor_path = NULL;
10774   if (tree_view->priv->cursor)
10775     cursor_path = gtk_tree_row_reference_get_path (tree_view->priv->cursor);
10776
10777   if (cursor_path == NULL)
10778     return FALSE;
10779
10780   if (_gtk_tree_view_find_node (tree_view, cursor_path, &tree, &node))
10781     return FALSE;
10782
10783   /* Don't handle the event if we aren't an expander */
10784   if (!((node->flags & GTK_RBNODE_IS_PARENT) == GTK_RBNODE_IS_PARENT))
10785     return FALSE;
10786
10787   if (!logical
10788       && gtk_widget_get_direction (GTK_WIDGET (tree_view)) == GTK_TEXT_DIR_RTL)
10789     expand = !expand;
10790
10791   if (expand)
10792     gtk_tree_view_real_expand_row (tree_view, cursor_path, tree, node, open_all, TRUE);
10793   else
10794     gtk_tree_view_real_collapse_row (tree_view, cursor_path, tree, node, TRUE);
10795
10796   gtk_tree_path_free (cursor_path);
10797
10798   return TRUE;
10799 }
10800
10801 static gboolean
10802 gtk_tree_view_real_select_cursor_parent (GtkTreeView *tree_view)
10803 {
10804   GtkRBTree *cursor_tree = NULL;
10805   GtkRBNode *cursor_node = NULL;
10806   GtkTreePath *cursor_path = NULL;
10807   GdkModifierType state;
10808
10809   if (!gtk_widget_has_focus (GTK_WIDGET (tree_view)))
10810     goto out;
10811
10812   cursor_path = NULL;
10813   if (tree_view->priv->cursor)
10814     cursor_path = gtk_tree_row_reference_get_path (tree_view->priv->cursor);
10815
10816   if (cursor_path == NULL)
10817     goto out;
10818
10819   _gtk_tree_view_find_node (tree_view, cursor_path,
10820                             &cursor_tree, &cursor_node);
10821   if (cursor_tree == NULL)
10822     {
10823       gtk_tree_path_free (cursor_path);
10824       goto out;
10825     }
10826
10827   if (cursor_tree->parent_node)
10828     {
10829       gtk_tree_view_queue_draw_path (tree_view, cursor_path, NULL);
10830       cursor_node = cursor_tree->parent_node;
10831       cursor_tree = cursor_tree->parent_tree;
10832
10833       gtk_tree_path_up (cursor_path);
10834
10835       if (gtk_get_current_event_state (&state))
10836         {
10837           GdkModifierType modify_mod_mask;
10838
10839           modify_mod_mask =
10840             gtk_widget_get_modifier_mask (GTK_WIDGET (tree_view),
10841                                           GDK_MODIFIER_INTENT_MODIFY_SELECTION);
10842
10843           if ((state & modify_mod_mask) == modify_mod_mask)
10844             tree_view->priv->modify_selection_pressed = TRUE;
10845         }
10846
10847       gtk_tree_view_real_set_cursor (tree_view, cursor_path, TRUE, FALSE);
10848       gtk_tree_view_clamp_node_visible (tree_view, cursor_tree, cursor_node);
10849
10850       gtk_widget_grab_focus (GTK_WIDGET (tree_view));
10851       gtk_tree_view_queue_draw_path (tree_view, cursor_path, NULL);
10852       gtk_tree_path_free (cursor_path);
10853
10854       tree_view->priv->modify_selection_pressed = FALSE;
10855
10856       return TRUE;
10857     }
10858
10859  out:
10860
10861   tree_view->priv->search_entry_avoid_unhandled_binding = TRUE;
10862   return FALSE;
10863 }
10864
10865 static gboolean
10866 gtk_tree_view_search_entry_flush_timeout (GtkTreeView *tree_view)
10867 {
10868   gtk_tree_view_search_dialog_hide (tree_view->priv->search_window, tree_view, NULL);
10869   tree_view->priv->typeselect_flush_timeout = 0;
10870
10871   return FALSE;
10872 }
10873
10874 /* Cut and paste from gtkwindow.c */
10875 static void
10876 send_focus_change (GtkWidget *widget,
10877                    GdkDevice *device,
10878                    gboolean   in)
10879 {
10880   GdkDeviceManager *device_manager;
10881   GList *devices, *d;
10882
10883   device_manager = gdk_display_get_device_manager (gtk_widget_get_display (widget));
10884   devices = gdk_device_manager_list_devices (device_manager, GDK_DEVICE_TYPE_MASTER);
10885   devices = g_list_concat (devices, gdk_device_manager_list_devices (device_manager, GDK_DEVICE_TYPE_SLAVE));
10886   devices = g_list_concat (devices, gdk_device_manager_list_devices (device_manager, GDK_DEVICE_TYPE_FLOATING));
10887
10888   for (d = devices; d; d = d->next)
10889     {
10890       GdkDevice *dev = d->data;
10891       GdkEvent *fevent;
10892       GdkWindow *window;
10893
10894       if (gdk_device_get_source (dev) != GDK_SOURCE_KEYBOARD)
10895         continue;
10896
10897       window = gtk_widget_get_window (widget);
10898
10899       /* Skip non-master keyboards that haven't
10900        * selected for events from this window
10901        */
10902       if (gdk_device_get_device_type (dev) != GDK_DEVICE_TYPE_MASTER &&
10903           !gdk_window_get_device_events (window, dev))
10904         continue;
10905
10906       fevent = gdk_event_new (GDK_FOCUS_CHANGE);
10907
10908       fevent->focus_change.type = GDK_FOCUS_CHANGE;
10909       fevent->focus_change.window = g_object_ref (window);
10910       fevent->focus_change.in = in;
10911       gdk_event_set_device (fevent, device);
10912
10913       gtk_widget_send_focus_change (widget, fevent);
10914
10915       gdk_event_free (fevent);
10916     }
10917
10918   g_list_free (devices);
10919 }
10920
10921 static void
10922 gtk_tree_view_ensure_interactive_directory (GtkTreeView *tree_view)
10923 {
10924   GtkWidget *frame, *vbox, *toplevel;
10925   GdkScreen *screen;
10926
10927   if (tree_view->priv->search_custom_entry_set)
10928     return;
10929
10930   toplevel = gtk_widget_get_toplevel (GTK_WIDGET (tree_view));
10931   screen = gtk_widget_get_screen (GTK_WIDGET (tree_view));
10932
10933    if (tree_view->priv->search_window != NULL)
10934      {
10935        if (gtk_window_has_group (GTK_WINDOW (toplevel)))
10936          gtk_window_group_add_window (gtk_window_get_group (GTK_WINDOW (toplevel)),
10937                                       GTK_WINDOW (tree_view->priv->search_window));
10938        else if (gtk_window_has_group (GTK_WINDOW (tree_view->priv->search_window)))
10939          gtk_window_group_remove_window (gtk_window_get_group (GTK_WINDOW (tree_view->priv->search_window)),
10940                                          GTK_WINDOW (tree_view->priv->search_window));
10941
10942        gtk_window_set_screen (GTK_WINDOW (tree_view->priv->search_window), screen);
10943
10944        return;
10945      }
10946
10947   tree_view->priv->search_window = gtk_window_new (GTK_WINDOW_POPUP);
10948   gtk_window_set_screen (GTK_WINDOW (tree_view->priv->search_window), screen);
10949
10950   if (gtk_window_has_group (GTK_WINDOW (toplevel)))
10951     gtk_window_group_add_window (gtk_window_get_group (GTK_WINDOW (toplevel)),
10952                                  GTK_WINDOW (tree_view->priv->search_window));
10953
10954   gtk_window_set_type_hint (GTK_WINDOW (tree_view->priv->search_window),
10955                             GDK_WINDOW_TYPE_HINT_UTILITY);
10956   gtk_window_set_modal (GTK_WINDOW (tree_view->priv->search_window), TRUE);
10957   g_signal_connect (tree_view->priv->search_window, "delete-event",
10958                     G_CALLBACK (gtk_tree_view_search_delete_event),
10959                     tree_view);
10960   g_signal_connect (tree_view->priv->search_window, "key-press-event",
10961                     G_CALLBACK (gtk_tree_view_search_key_press_event),
10962                     tree_view);
10963   g_signal_connect (tree_view->priv->search_window, "button-press-event",
10964                     G_CALLBACK (gtk_tree_view_search_button_press_event),
10965                     tree_view);
10966   g_signal_connect (tree_view->priv->search_window, "scroll-event",
10967                     G_CALLBACK (gtk_tree_view_search_scroll_event),
10968                     tree_view);
10969
10970   frame = gtk_frame_new (NULL);
10971   gtk_frame_set_shadow_type (GTK_FRAME (frame), GTK_SHADOW_ETCHED_IN);
10972   gtk_widget_show (frame);
10973   gtk_container_add (GTK_CONTAINER (tree_view->priv->search_window), frame);
10974
10975   vbox = gtk_box_new (GTK_ORIENTATION_VERTICAL, 0);
10976   gtk_widget_show (vbox);
10977   gtk_container_add (GTK_CONTAINER (frame), vbox);
10978   gtk_container_set_border_width (GTK_CONTAINER (vbox), 3);
10979
10980   /* add entry */
10981   tree_view->priv->search_entry = gtk_entry_new ();
10982   gtk_widget_show (tree_view->priv->search_entry);
10983   g_signal_connect (tree_view->priv->search_entry, "populate-popup",
10984                     G_CALLBACK (gtk_tree_view_search_disable_popdown),
10985                     tree_view);
10986   g_signal_connect (tree_view->priv->search_entry,
10987                     "activate", G_CALLBACK (gtk_tree_view_search_activate),
10988                     tree_view);
10989
10990   g_signal_connect (_gtk_entry_get_im_context (GTK_ENTRY (tree_view->priv->search_entry)),
10991                     "preedit-changed",
10992                     G_CALLBACK (gtk_tree_view_search_preedit_changed),
10993                     tree_view);
10994
10995   gtk_container_add (GTK_CONTAINER (vbox),
10996                      tree_view->priv->search_entry);
10997
10998   gtk_widget_realize (tree_view->priv->search_entry);
10999 }
11000
11001 /* Pops up the interactive search entry.  If keybinding is TRUE then the user
11002  * started this by typing the start_interactive_search keybinding.  Otherwise, it came from
11003  */
11004 static gboolean
11005 gtk_tree_view_real_start_interactive_search (GtkTreeView *tree_view,
11006                                              GdkDevice   *device,
11007                                              gboolean     keybinding)
11008 {
11009   /* We only start interactive search if we have focus or the columns
11010    * have focus.  If one of our children have focus, we don't want to
11011    * start the search.
11012    */
11013   GList *list;
11014   gboolean found_focus = FALSE;
11015   GtkWidgetClass *entry_parent_class;
11016
11017   if (!tree_view->priv->enable_search && !keybinding)
11018     return FALSE;
11019
11020   if (tree_view->priv->search_custom_entry_set)
11021     return FALSE;
11022
11023   if (tree_view->priv->search_window != NULL &&
11024       gtk_widget_get_visible (tree_view->priv->search_window))
11025     return TRUE;
11026
11027   for (list = tree_view->priv->columns; list; list = list->next)
11028     {
11029       GtkTreeViewColumn *column;
11030       GtkWidget         *button;
11031
11032       column = list->data;
11033       if (!gtk_tree_view_column_get_visible (column))
11034         continue;
11035
11036       button = gtk_tree_view_column_get_button (column);
11037       if (gtk_widget_has_focus (button))
11038         {
11039           found_focus = TRUE;
11040           break;
11041         }
11042     }
11043
11044   if (gtk_widget_has_focus (GTK_WIDGET (tree_view)))
11045     found_focus = TRUE;
11046
11047   if (!found_focus)
11048     return FALSE;
11049
11050   if (tree_view->priv->search_column < 0)
11051     return FALSE;
11052
11053   gtk_tree_view_ensure_interactive_directory (tree_view);
11054
11055   if (keybinding)
11056     gtk_entry_set_text (GTK_ENTRY (tree_view->priv->search_entry), "");
11057
11058   /* done, show it */
11059   tree_view->priv->search_position_func (tree_view, tree_view->priv->search_window, tree_view->priv->search_position_user_data);
11060   gtk_widget_show (tree_view->priv->search_window);
11061   if (tree_view->priv->search_entry_changed_id == 0)
11062     {
11063       tree_view->priv->search_entry_changed_id =
11064         g_signal_connect (tree_view->priv->search_entry, "changed",
11065                           G_CALLBACK (gtk_tree_view_search_init),
11066                           tree_view);
11067     }
11068
11069   tree_view->priv->typeselect_flush_timeout =
11070     gdk_threads_add_timeout (GTK_TREE_VIEW_SEARCH_DIALOG_TIMEOUT,
11071                    (GSourceFunc) gtk_tree_view_search_entry_flush_timeout,
11072                    tree_view);
11073
11074   /* Grab focus will select all the text.  We don't want that to happen, so we
11075    * call the parent instance and bypass the selection change.  This is probably
11076    * really non-kosher. */
11077   entry_parent_class = g_type_class_peek_parent (GTK_ENTRY_GET_CLASS (tree_view->priv->search_entry));
11078   (entry_parent_class->grab_focus) (tree_view->priv->search_entry);
11079
11080   /* send focus-in event */
11081   send_focus_change (tree_view->priv->search_entry, device, TRUE);
11082
11083   /* search first matching iter */
11084   gtk_tree_view_search_init (tree_view->priv->search_entry, tree_view);
11085
11086   return TRUE;
11087 }
11088
11089 static gboolean
11090 gtk_tree_view_start_interactive_search (GtkTreeView *tree_view)
11091 {
11092   return gtk_tree_view_real_start_interactive_search (tree_view,
11093                                                       gtk_get_current_event_device (),
11094                                                       TRUE);
11095 }
11096
11097 /* this function returns the new width of the column being resized given
11098  * the column and x position of the cursor; the x cursor position is passed
11099  * in as a pointer and automagicly corrected if it's beyond min/max limits
11100  */
11101 static gint
11102 gtk_tree_view_new_column_width (GtkTreeView *tree_view,
11103                                 gint       i,
11104                                 gint      *x)
11105 {
11106   GtkAllocation allocation;
11107   GtkTreeViewColumn *column;
11108   GtkRequisition button_req;
11109   gint max_width, min_width;
11110   gint width;
11111   gboolean rtl;
11112
11113   /* first translate the x position from widget->window
11114    * to clist->clist_window
11115    */
11116   rtl = (gtk_widget_get_direction (GTK_WIDGET (tree_view)) == GTK_TEXT_DIR_RTL);
11117   column = g_list_nth (tree_view->priv->columns, i)->data;
11118   gtk_widget_get_allocation (gtk_tree_view_column_get_button (column), &allocation);
11119   width = rtl ? (allocation.x + allocation.width - *x) : (*x - allocation.x);
11120
11121   /* Clamp down the value */
11122   min_width = gtk_tree_view_column_get_min_width (column);
11123   if (min_width == -1)
11124     {
11125       gtk_widget_get_preferred_size (gtk_tree_view_column_get_button (column), &button_req, NULL);
11126       width = MAX (button_req.width, width);
11127     }
11128   else
11129     width = MAX (min_width, width);
11130
11131   max_width = gtk_tree_view_column_get_max_width (column);
11132   if (max_width != -1)
11133     width = MIN (width, max_width);
11134
11135   *x = rtl ? (allocation.x + allocation.width - width) : (allocation.x + width);
11136
11137   return width;
11138 }
11139
11140
11141 /* FIXME this adjust_allocation is a big cut-and-paste from
11142  * GtkCList, needs to be some "official" way to do this
11143  * factored out.
11144  */
11145 typedef struct
11146 {
11147   GdkWindow *window;
11148   int dx;
11149   int dy;
11150 } ScrollData;
11151
11152 /* The window to which widget->window is relative */
11153 #define ALLOCATION_WINDOW(widget)               \
11154    (!gtk_widget_get_has_window (widget) ?                   \
11155     gtk_widget_get_window (widget) :                        \
11156     gdk_window_get_parent (gtk_widget_get_window (widget)))
11157
11158 static void
11159 adjust_allocation_recurse (GtkWidget *widget,
11160                            gpointer   data)
11161 {
11162   GtkAllocation allocation;
11163   ScrollData *scroll_data = data;
11164
11165   /* Need to really size allocate instead of just poking
11166    * into widget->allocation if the widget is not realized.
11167    * FIXME someone figure out why this was.
11168    */
11169   gtk_widget_get_allocation (widget, &allocation);
11170   if (!gtk_widget_get_realized (widget))
11171     {
11172       if (gtk_widget_get_visible (widget))
11173         {
11174           GdkRectangle tmp_rectangle = allocation;
11175           tmp_rectangle.x += scroll_data->dx;
11176           tmp_rectangle.y += scroll_data->dy;
11177
11178           gtk_widget_size_allocate (widget, &tmp_rectangle);
11179         }
11180     }
11181   else
11182     {
11183       if (ALLOCATION_WINDOW (widget) == scroll_data->window)
11184         {
11185           allocation.x += scroll_data->dx;
11186           allocation.y += scroll_data->dy;
11187           gtk_widget_set_allocation (widget, &allocation);
11188
11189           if (GTK_IS_CONTAINER (widget))
11190             gtk_container_forall (GTK_CONTAINER (widget),
11191                                   adjust_allocation_recurse,
11192                                   data);
11193         }
11194     }
11195 }
11196
11197 static void
11198 adjust_allocation (GtkWidget *widget,
11199                    int        dx,
11200                    int        dy)
11201 {
11202   ScrollData scroll_data;
11203
11204   if (gtk_widget_get_realized (widget))
11205     scroll_data.window = ALLOCATION_WINDOW (widget);
11206   else
11207     scroll_data.window = NULL;
11208
11209   scroll_data.dx = dx;
11210   scroll_data.dy = dy;
11211
11212   adjust_allocation_recurse (widget, &scroll_data);
11213 }
11214
11215 /* Callbacks */
11216 static void
11217 gtk_tree_view_adjustment_changed (GtkAdjustment *adjustment,
11218                                   GtkTreeView   *tree_view)
11219 {
11220   if (gtk_widget_get_realized (GTK_WIDGET (tree_view)))
11221     {
11222       GtkStyleContext *context;
11223       gint dy;
11224
11225       gdk_window_move (tree_view->priv->bin_window,
11226                        - gtk_adjustment_get_value (tree_view->priv->hadjustment),
11227                        gtk_tree_view_get_effective_header_height (tree_view));
11228       gdk_window_move (tree_view->priv->header_window,
11229                        - gtk_adjustment_get_value (tree_view->priv->hadjustment),
11230                        0);
11231       dy = tree_view->priv->dy - (int) gtk_adjustment_get_value (tree_view->priv->vadjustment);
11232       if (dy)
11233         {
11234           update_prelight (tree_view,
11235                            tree_view->priv->event_last_x,
11236                            tree_view->priv->event_last_y - dy);
11237
11238           if (tree_view->priv->edited_column)
11239             {
11240               GList *list;
11241               GtkTreeViewChild *child = NULL;
11242               GtkCellEditable *edit_widget;
11243               GtkCellArea *area;
11244
11245               area        = gtk_cell_layout_get_area (GTK_CELL_LAYOUT (tree_view->priv->edited_column));
11246               edit_widget = gtk_cell_area_get_edit_widget (area);
11247               if (GTK_IS_WIDGET (edit_widget))
11248                 {
11249                   adjust_allocation (GTK_WIDGET (edit_widget), 0, dy);
11250
11251                   for (list = tree_view->priv->children; list; list = list->next)
11252                     {
11253                       child = (GtkTreeViewChild *)list->data;
11254                       if (child->widget == GTK_WIDGET (edit_widget))
11255                         {
11256                           child->y += dy;
11257                           break;
11258                         }
11259                     }
11260                 }
11261             }
11262         }
11263       gdk_window_scroll (tree_view->priv->bin_window, 0, dy);
11264
11265       context = gtk_widget_get_style_context (GTK_WIDGET (tree_view));
11266       gtk_style_context_scroll_animations (context, tree_view->priv->bin_window, 0, dy);
11267
11268       if (tree_view->priv->dy != (int) gtk_adjustment_get_value (tree_view->priv->vadjustment))
11269         {
11270           /* update our dy and top_row */
11271           tree_view->priv->dy = (int) gtk_adjustment_get_value (tree_view->priv->vadjustment);
11272
11273           if (!tree_view->priv->in_top_row_to_dy)
11274             gtk_tree_view_dy_to_top_row (tree_view);
11275         }
11276
11277       gdk_window_process_updates (tree_view->priv->header_window, TRUE);
11278       gtk_tree_view_bin_process_updates (tree_view);
11279     }
11280 }
11281
11282 \f
11283
11284 /* Public methods
11285  */
11286
11287 /**
11288  * gtk_tree_view_new:
11289  *
11290  * Creates a new #GtkTreeView widget.
11291  *
11292  * Return value: A newly created #GtkTreeView widget.
11293  **/
11294 GtkWidget *
11295 gtk_tree_view_new (void)
11296 {
11297   return g_object_new (GTK_TYPE_TREE_VIEW, NULL);
11298 }
11299
11300 /**
11301  * gtk_tree_view_new_with_model:
11302  * @model: the model.
11303  *
11304  * Creates a new #GtkTreeView widget with the model initialized to @model.
11305  *
11306  * Return value: A newly created #GtkTreeView widget.
11307  **/
11308 GtkWidget *
11309 gtk_tree_view_new_with_model (GtkTreeModel *model)
11310 {
11311   return g_object_new (GTK_TYPE_TREE_VIEW, "model", model, NULL);
11312 }
11313
11314 /* Public Accessors
11315  */
11316
11317 /**
11318  * gtk_tree_view_get_model:
11319  * @tree_view: a #GtkTreeView
11320  *
11321  * Returns the model the #GtkTreeView is based on.  Returns %NULL if the
11322  * model is unset.
11323  *
11324  * Return value: (transfer none): A #GtkTreeModel, or %NULL if none is currently being used.
11325  **/
11326 GtkTreeModel *
11327 gtk_tree_view_get_model (GtkTreeView *tree_view)
11328 {
11329   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), NULL);
11330
11331   return tree_view->priv->model;
11332 }
11333
11334 /**
11335  * gtk_tree_view_set_model:
11336  * @tree_view: A #GtkTreeNode.
11337  * @model: (allow-none): The model.
11338  *
11339  * Sets the model for a #GtkTreeView.  If the @tree_view already has a model
11340  * set, it will remove it before setting the new model.  If @model is %NULL,
11341  * then it will unset the old model.
11342  **/
11343 void
11344 gtk_tree_view_set_model (GtkTreeView  *tree_view,
11345                          GtkTreeModel *model)
11346 {
11347   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
11348   g_return_if_fail (model == NULL || GTK_IS_TREE_MODEL (model));
11349
11350   if (model == tree_view->priv->model)
11351     return;
11352
11353   if (tree_view->priv->scroll_to_path)
11354     {
11355       gtk_tree_row_reference_free (tree_view->priv->scroll_to_path);
11356       tree_view->priv->scroll_to_path = NULL;
11357     }
11358
11359   if (tree_view->priv->rubber_band_status)
11360     gtk_tree_view_stop_rubber_band (tree_view);
11361
11362   if (tree_view->priv->model)
11363     {
11364       GList *tmplist = tree_view->priv->columns;
11365       GtkStyleContext *context;
11366
11367       gtk_tree_view_unref_and_check_selection_tree (tree_view, tree_view->priv->tree);
11368       gtk_tree_view_stop_editing (tree_view, TRUE);
11369
11370       context = gtk_widget_get_style_context (GTK_WIDGET (tree_view));
11371       gtk_style_context_cancel_animations (context, NULL);
11372
11373       g_signal_handlers_disconnect_by_func (tree_view->priv->model,
11374                                             gtk_tree_view_row_changed,
11375                                             tree_view);
11376       g_signal_handlers_disconnect_by_func (tree_view->priv->model,
11377                                             gtk_tree_view_row_inserted,
11378                                             tree_view);
11379       g_signal_handlers_disconnect_by_func (tree_view->priv->model,
11380                                             gtk_tree_view_row_has_child_toggled,
11381                                             tree_view);
11382       g_signal_handlers_disconnect_by_func (tree_view->priv->model,
11383                                             gtk_tree_view_row_deleted,
11384                                             tree_view);
11385       g_signal_handlers_disconnect_by_func (tree_view->priv->model,
11386                                             gtk_tree_view_rows_reordered,
11387                                             tree_view);
11388
11389       for (; tmplist; tmplist = tmplist->next)
11390         _gtk_tree_view_column_unset_model (tmplist->data,
11391                                            tree_view->priv->model);
11392
11393       if (tree_view->priv->tree)
11394         gtk_tree_view_free_rbtree (tree_view);
11395
11396       gtk_tree_row_reference_free (tree_view->priv->drag_dest_row);
11397       tree_view->priv->drag_dest_row = NULL;
11398       gtk_tree_row_reference_free (tree_view->priv->cursor);
11399       tree_view->priv->cursor = NULL;
11400       gtk_tree_row_reference_free (tree_view->priv->anchor);
11401       tree_view->priv->anchor = NULL;
11402       gtk_tree_row_reference_free (tree_view->priv->top_row);
11403       tree_view->priv->top_row = NULL;
11404       gtk_tree_row_reference_free (tree_view->priv->scroll_to_path);
11405       tree_view->priv->scroll_to_path = NULL;
11406
11407       tree_view->priv->scroll_to_column = NULL;
11408
11409       g_object_unref (tree_view->priv->model);
11410
11411       tree_view->priv->search_column = -1;
11412       tree_view->priv->fixed_height_check = 0;
11413       tree_view->priv->fixed_height = -1;
11414       tree_view->priv->dy = tree_view->priv->top_row_dy = 0;
11415       tree_view->priv->last_button_x = -1;
11416       tree_view->priv->last_button_y = -1;
11417     }
11418
11419   tree_view->priv->model = model;
11420
11421   if (tree_view->priv->model)
11422     {
11423       gint i;
11424       GtkTreePath *path;
11425       GtkTreeIter iter;
11426       GtkTreeModelFlags flags;
11427
11428       if (tree_view->priv->search_column == -1)
11429         {
11430           for (i = 0; i < gtk_tree_model_get_n_columns (model); i++)
11431             {
11432               GType type = gtk_tree_model_get_column_type (model, i);
11433
11434               if (g_value_type_transformable (type, G_TYPE_STRING))
11435                 {
11436                   tree_view->priv->search_column = i;
11437                   break;
11438                 }
11439             }
11440         }
11441
11442       g_object_ref (tree_view->priv->model);
11443       g_signal_connect (tree_view->priv->model,
11444                         "row-changed",
11445                         G_CALLBACK (gtk_tree_view_row_changed),
11446                         tree_view);
11447       g_signal_connect (tree_view->priv->model,
11448                         "row-inserted",
11449                         G_CALLBACK (gtk_tree_view_row_inserted),
11450                         tree_view);
11451       g_signal_connect (tree_view->priv->model,
11452                         "row-has-child-toggled",
11453                         G_CALLBACK (gtk_tree_view_row_has_child_toggled),
11454                         tree_view);
11455       g_signal_connect (tree_view->priv->model,
11456                         "row-deleted",
11457                         G_CALLBACK (gtk_tree_view_row_deleted),
11458                         tree_view);
11459       g_signal_connect (tree_view->priv->model,
11460                         "rows-reordered",
11461                         G_CALLBACK (gtk_tree_view_rows_reordered),
11462                         tree_view);
11463
11464       flags = gtk_tree_model_get_flags (tree_view->priv->model);
11465       if ((flags & GTK_TREE_MODEL_LIST_ONLY) == GTK_TREE_MODEL_LIST_ONLY)
11466         tree_view->priv->is_list = TRUE;
11467       else
11468         tree_view->priv->is_list = FALSE;
11469
11470       path = gtk_tree_path_new_first ();
11471       if (gtk_tree_model_get_iter (tree_view->priv->model, &iter, path))
11472         {
11473           tree_view->priv->tree = _gtk_rbtree_new ();
11474           gtk_tree_view_build_tree (tree_view, tree_view->priv->tree, &iter, 1, FALSE);
11475         }
11476       gtk_tree_path_free (path);
11477
11478       /*  FIXME: do I need to do this? gtk_tree_view_create_buttons (tree_view); */
11479       install_presize_handler (tree_view);
11480     }
11481
11482   g_object_notify (G_OBJECT (tree_view), "model");
11483
11484   if (tree_view->priv->selection)
11485   _gtk_tree_selection_emit_changed (tree_view->priv->selection);
11486
11487   if (gtk_widget_get_realized (GTK_WIDGET (tree_view)))
11488     gtk_widget_queue_resize (GTK_WIDGET (tree_view));
11489 }
11490
11491 /**
11492  * gtk_tree_view_get_selection:
11493  * @tree_view: A #GtkTreeView.
11494  *
11495  * Gets the #GtkTreeSelection associated with @tree_view.
11496  *
11497  * Return value: (transfer none): A #GtkTreeSelection object.
11498  **/
11499 GtkTreeSelection *
11500 gtk_tree_view_get_selection (GtkTreeView *tree_view)
11501 {
11502   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), NULL);
11503
11504   return tree_view->priv->selection;
11505 }
11506
11507 /**
11508  * gtk_tree_view_get_hadjustment:
11509  * @tree_view: A #GtkTreeView
11510  *
11511  * Gets the #GtkAdjustment currently being used for the horizontal aspect.
11512  *
11513  * Return value: (transfer none): A #GtkAdjustment object, or %NULL
11514  *     if none is currently being used.
11515  *
11516  * Deprecated: 3.0: Use gtk_scrollable_get_hadjustment()
11517  **/
11518 GtkAdjustment *
11519 gtk_tree_view_get_hadjustment (GtkTreeView *tree_view)
11520 {
11521   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), NULL);
11522
11523   return gtk_tree_view_do_get_hadjustment (tree_view);
11524 }
11525
11526 static GtkAdjustment *
11527 gtk_tree_view_do_get_hadjustment (GtkTreeView *tree_view)
11528 {
11529   return tree_view->priv->hadjustment;
11530 }
11531
11532 /**
11533  * gtk_tree_view_set_hadjustment:
11534  * @tree_view: A #GtkTreeView
11535  * @adjustment: (allow-none): The #GtkAdjustment to set, or %NULL
11536  *
11537  * Sets the #GtkAdjustment for the current horizontal aspect.
11538  *
11539  * Deprecated: 3.0: Use gtk_scrollable_set_hadjustment()
11540  **/
11541 void
11542 gtk_tree_view_set_hadjustment (GtkTreeView   *tree_view,
11543                                GtkAdjustment *adjustment)
11544 {
11545   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
11546   g_return_if_fail (adjustment == NULL || GTK_IS_ADJUSTMENT (adjustment));
11547
11548   gtk_tree_view_do_set_hadjustment (tree_view, adjustment);
11549 }
11550
11551 static void
11552 gtk_tree_view_do_set_hadjustment (GtkTreeView   *tree_view,
11553                                   GtkAdjustment *adjustment)
11554 {
11555   GtkTreeViewPrivate *priv = tree_view->priv;
11556
11557   if (adjustment && priv->hadjustment == adjustment)
11558     return;
11559
11560   if (priv->hadjustment != NULL)
11561     {
11562       g_signal_handlers_disconnect_by_func (priv->hadjustment,
11563                                             gtk_tree_view_adjustment_changed,
11564                                             tree_view);
11565       g_object_unref (priv->hadjustment);
11566     }
11567
11568   if (adjustment == NULL)
11569     adjustment = gtk_adjustment_new (0.0, 0.0, 0.0,
11570                                      0.0, 0.0, 0.0);
11571
11572   g_signal_connect (adjustment, "value-changed",
11573                     G_CALLBACK (gtk_tree_view_adjustment_changed), tree_view);
11574   priv->hadjustment = g_object_ref_sink (adjustment);
11575   /* FIXME: Adjustment should probably be populated here with fresh values, but
11576    * internal details are too complicated for me to decipher right now.
11577    */
11578   gtk_tree_view_adjustment_changed (NULL, tree_view);
11579
11580   g_object_notify (G_OBJECT (tree_view), "hadjustment");
11581 }
11582
11583 /**
11584  * gtk_tree_view_get_vadjustment:
11585  * @tree_view: A #GtkTreeView
11586  *
11587  * Gets the #GtkAdjustment currently being used for the vertical aspect.
11588  *
11589  * Return value: (transfer none): A #GtkAdjustment object, or %NULL
11590  *     if none is currently being used.
11591  *
11592  * Deprecated: 3.0: Use gtk_scrollable_get_vadjustment()
11593  **/
11594 GtkAdjustment *
11595 gtk_tree_view_get_vadjustment (GtkTreeView *tree_view)
11596 {
11597   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), NULL);
11598
11599   return gtk_tree_view_do_get_vadjustment (tree_view);
11600 }
11601
11602 static GtkAdjustment *
11603 gtk_tree_view_do_get_vadjustment (GtkTreeView *tree_view)
11604 {
11605   return tree_view->priv->vadjustment;
11606 }
11607
11608 /**
11609  * gtk_tree_view_set_vadjustment:
11610  * @tree_view: A #GtkTreeView
11611  * @adjustment: (allow-none): The #GtkAdjustment to set, or %NULL
11612  *
11613  * Sets the #GtkAdjustment for the current vertical aspect.
11614  *
11615  * Deprecated: 3.0: Use gtk_scrollable_set_vadjustment()
11616  **/
11617 void
11618 gtk_tree_view_set_vadjustment (GtkTreeView   *tree_view,
11619                                GtkAdjustment *adjustment)
11620 {
11621   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
11622   g_return_if_fail (adjustment == NULL || GTK_IS_ADJUSTMENT (adjustment));
11623
11624   gtk_tree_view_do_set_vadjustment (tree_view, adjustment);
11625 }
11626
11627 static void
11628 gtk_tree_view_do_set_vadjustment (GtkTreeView   *tree_view,
11629                                   GtkAdjustment *adjustment)
11630 {
11631   GtkTreeViewPrivate *priv = tree_view->priv;
11632
11633   if (adjustment && priv->vadjustment == adjustment)
11634     return;
11635
11636   if (priv->vadjustment != NULL)
11637     {
11638       g_signal_handlers_disconnect_by_func (priv->vadjustment,
11639                                             gtk_tree_view_adjustment_changed,
11640                                             tree_view);
11641       g_object_unref (priv->vadjustment);
11642     }
11643
11644   if (adjustment == NULL)
11645     adjustment = gtk_adjustment_new (0.0, 0.0, 0.0,
11646                                      0.0, 0.0, 0.0);
11647
11648   g_signal_connect (adjustment, "value-changed",
11649                     G_CALLBACK (gtk_tree_view_adjustment_changed), tree_view);
11650   priv->vadjustment = g_object_ref_sink (adjustment);
11651   /* FIXME: Adjustment should probably be populated here with fresh values, but
11652    * internal details are too complicated for me to decipher right now.
11653    */
11654   gtk_tree_view_adjustment_changed (NULL, tree_view);
11655   g_object_notify (G_OBJECT (tree_view), "vadjustment");
11656 }
11657
11658 /* Column and header operations */
11659
11660 /**
11661  * gtk_tree_view_get_headers_visible:
11662  * @tree_view: A #GtkTreeView.
11663  *
11664  * Returns %TRUE if the headers on the @tree_view are visible.
11665  *
11666  * Return value: Whether the headers are visible or not.
11667  **/
11668 gboolean
11669 gtk_tree_view_get_headers_visible (GtkTreeView *tree_view)
11670 {
11671   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), FALSE);
11672
11673   return tree_view->priv->headers_visible;
11674 }
11675
11676 /**
11677  * gtk_tree_view_set_headers_visible:
11678  * @tree_view: A #GtkTreeView.
11679  * @headers_visible: %TRUE if the headers are visible
11680  *
11681  * Sets the visibility state of the headers.
11682  **/
11683 void
11684 gtk_tree_view_set_headers_visible (GtkTreeView *tree_view,
11685                                    gboolean     headers_visible)
11686 {
11687   gint x, y;
11688   GList *list;
11689   GtkTreeViewColumn *column;
11690   GtkAllocation allocation;
11691   GtkWidget *button;
11692
11693   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
11694
11695   headers_visible = !! headers_visible;
11696
11697   if (tree_view->priv->headers_visible == headers_visible)
11698     return;
11699
11700   tree_view->priv->headers_visible = headers_visible == TRUE;
11701
11702   if (gtk_widget_get_realized (GTK_WIDGET (tree_view)))
11703     {
11704       gdk_window_get_position (tree_view->priv->bin_window, &x, &y);
11705       if (headers_visible)
11706         {
11707           gtk_widget_get_allocation (GTK_WIDGET (tree_view), &allocation);
11708           gdk_window_move_resize (tree_view->priv->bin_window,
11709                                   x, y  + gtk_tree_view_get_effective_header_height (tree_view),
11710                                   tree_view->priv->width, allocation.height -  + gtk_tree_view_get_effective_header_height (tree_view));
11711
11712           if (gtk_widget_get_mapped (GTK_WIDGET (tree_view)))
11713             gtk_tree_view_map_buttons (tree_view);
11714         }
11715       else
11716         {
11717           gdk_window_move_resize (tree_view->priv->bin_window, x, y, tree_view->priv->width, tree_view->priv->height);
11718
11719           for (list = tree_view->priv->columns; list; list = list->next)
11720             {
11721               column = list->data;
11722               button = gtk_tree_view_column_get_button (column);
11723
11724               gtk_widget_hide (button);
11725               gtk_widget_unmap (button);
11726             }
11727           gdk_window_hide (tree_view->priv->header_window);
11728         }
11729     }
11730
11731   gtk_widget_get_allocation (GTK_WIDGET (tree_view), &allocation);
11732   gtk_adjustment_configure (tree_view->priv->vadjustment,
11733                             gtk_adjustment_get_value (tree_view->priv->vadjustment),
11734                             0,
11735                             tree_view->priv->height,
11736                             gtk_adjustment_get_step_increment (tree_view->priv->vadjustment),
11737                             (allocation.height - gtk_tree_view_get_effective_header_height (tree_view)) / 2,
11738                             allocation.height - gtk_tree_view_get_effective_header_height (tree_view));
11739
11740   gtk_widget_queue_resize (GTK_WIDGET (tree_view));
11741
11742   g_object_notify (G_OBJECT (tree_view), "headers-visible");
11743 }
11744
11745 /**
11746  * gtk_tree_view_columns_autosize:
11747  * @tree_view: A #GtkTreeView.
11748  *
11749  * Resizes all columns to their optimal width. Only works after the
11750  * treeview has been realized.
11751  **/
11752 void
11753 gtk_tree_view_columns_autosize (GtkTreeView *tree_view)
11754 {
11755   gboolean dirty = FALSE;
11756   GList *list;
11757   GtkTreeViewColumn *column;
11758
11759   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
11760
11761   for (list = tree_view->priv->columns; list; list = list->next)
11762     {
11763       column = list->data;
11764       if (gtk_tree_view_column_get_sizing (column) == GTK_TREE_VIEW_COLUMN_AUTOSIZE)
11765         continue;
11766       _gtk_tree_view_column_cell_set_dirty (column, TRUE);
11767       dirty = TRUE;
11768     }
11769
11770   if (dirty)
11771     gtk_widget_queue_resize (GTK_WIDGET (tree_view));
11772 }
11773
11774 /**
11775  * gtk_tree_view_set_headers_clickable:
11776  * @tree_view: A #GtkTreeView.
11777  * @setting: %TRUE if the columns are clickable.
11778  *
11779  * Allow the column title buttons to be clicked.
11780  **/
11781 void
11782 gtk_tree_view_set_headers_clickable (GtkTreeView *tree_view,
11783                                      gboolean   setting)
11784 {
11785   GList *list;
11786
11787   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
11788
11789   for (list = tree_view->priv->columns; list; list = list->next)
11790     gtk_tree_view_column_set_clickable (GTK_TREE_VIEW_COLUMN (list->data), setting);
11791
11792   g_object_notify (G_OBJECT (tree_view), "headers-clickable");
11793 }
11794
11795
11796 /**
11797  * gtk_tree_view_get_headers_clickable:
11798  * @tree_view: A #GtkTreeView.
11799  *
11800  * Returns whether all header columns are clickable.
11801  *
11802  * Return value: %TRUE if all header columns are clickable, otherwise %FALSE
11803  *
11804  * Since: 2.10
11805  **/
11806 gboolean
11807 gtk_tree_view_get_headers_clickable (GtkTreeView *tree_view)
11808 {
11809   GList *list;
11810
11811   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), FALSE);
11812
11813   for (list = tree_view->priv->columns; list; list = list->next)
11814     if (!gtk_tree_view_column_get_clickable (GTK_TREE_VIEW_COLUMN (list->data)))
11815       return FALSE;
11816
11817   return TRUE;
11818 }
11819
11820 /**
11821  * gtk_tree_view_set_rules_hint
11822  * @tree_view: a #GtkTreeView
11823  * @setting: %TRUE if the tree requires reading across rows
11824  *
11825  * This function tells GTK+ that the user interface for your
11826  * application requires users to read across tree rows and associate
11827  * cells with one another. By default, GTK+ will then render the tree
11828  * with alternating row colors. Do <emphasis>not</emphasis> use it
11829  * just because you prefer the appearance of the ruled tree; that's a
11830  * question for the theme. Some themes will draw tree rows in
11831  * alternating colors even when rules are turned off, and users who
11832  * prefer that appearance all the time can choose those themes. You
11833  * should call this function only as a <emphasis>semantic</emphasis>
11834  * hint to the theme engine that your tree makes alternating colors
11835  * useful from a functional standpoint (since it has lots of columns,
11836  * generally).
11837  *
11838  **/
11839 void
11840 gtk_tree_view_set_rules_hint (GtkTreeView  *tree_view,
11841                               gboolean      setting)
11842 {
11843   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
11844
11845   setting = setting != FALSE;
11846
11847   if (tree_view->priv->has_rules != setting)
11848     {
11849       tree_view->priv->has_rules = setting;
11850       gtk_widget_queue_draw (GTK_WIDGET (tree_view));
11851     }
11852
11853   g_object_notify (G_OBJECT (tree_view), "rules-hint");
11854 }
11855
11856 /**
11857  * gtk_tree_view_get_rules_hint
11858  * @tree_view: a #GtkTreeView
11859  *
11860  * Gets the setting set by gtk_tree_view_set_rules_hint().
11861  *
11862  * Return value: %TRUE if rules are useful for the user of this tree
11863  **/
11864 gboolean
11865 gtk_tree_view_get_rules_hint (GtkTreeView  *tree_view)
11866 {
11867   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), FALSE);
11868
11869   return tree_view->priv->has_rules;
11870 }
11871
11872 /* Public Column functions
11873  */
11874
11875 /**
11876  * gtk_tree_view_append_column:
11877  * @tree_view: A #GtkTreeView.
11878  * @column: The #GtkTreeViewColumn to add.
11879  *
11880  * Appends @column to the list of columns. If @tree_view has "fixed_height"
11881  * mode enabled, then @column must have its "sizing" property set to be
11882  * GTK_TREE_VIEW_COLUMN_FIXED.
11883  *
11884  * Return value: The number of columns in @tree_view after appending.
11885  **/
11886 gint
11887 gtk_tree_view_append_column (GtkTreeView       *tree_view,
11888                              GtkTreeViewColumn *column)
11889 {
11890   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), -1);
11891   g_return_val_if_fail (GTK_IS_TREE_VIEW_COLUMN (column), -1);
11892   g_return_val_if_fail (gtk_tree_view_column_get_tree_view (column) == NULL, -1);
11893
11894   return gtk_tree_view_insert_column (tree_view, column, -1);
11895 }
11896
11897 void
11898 _gtk_tree_view_reset_header_styles (GtkTreeView *tree_view)
11899 {
11900   GList *columns;
11901
11902   for (columns = tree_view->priv->columns; columns; columns = columns->next)
11903     {
11904       GtkTreeViewColumn *column = columns->data;
11905       GtkWidget *header_widget;
11906
11907       if (gtk_tree_view_column_get_visible (column))
11908         continue;
11909
11910       header_widget = gtk_tree_view_column_get_widget (column);
11911
11912       if (!header_widget)
11913         header_widget = gtk_tree_view_column_get_button (column);
11914
11915       gtk_widget_reset_style (header_widget);
11916     }
11917 }
11918
11919
11920 /**
11921  * gtk_tree_view_remove_column:
11922  * @tree_view: A #GtkTreeView.
11923  * @column: The #GtkTreeViewColumn to remove.
11924  *
11925  * Removes @column from @tree_view.
11926  *
11927  * Return value: The number of columns in @tree_view after removing.
11928  **/
11929 gint
11930 gtk_tree_view_remove_column (GtkTreeView       *tree_view,
11931                              GtkTreeViewColumn *column)
11932 {
11933   guint position;
11934
11935   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), -1);
11936   g_return_val_if_fail (GTK_IS_TREE_VIEW_COLUMN (column), -1);
11937   g_return_val_if_fail (gtk_tree_view_column_get_tree_view (column) == GTK_WIDGET (tree_view), -1);
11938
11939   if (tree_view->priv->focus_column == column)
11940     tree_view->priv->focus_column = NULL;
11941
11942   if (tree_view->priv->edited_column == column)
11943     {
11944       gtk_tree_view_stop_editing (tree_view, TRUE);
11945
11946       /* no need to, but just to be sure ... */
11947       tree_view->priv->edited_column = NULL;
11948     }
11949
11950   if (tree_view->priv->expander_column == column)
11951     tree_view->priv->expander_column = NULL;
11952
11953   g_signal_handlers_disconnect_by_func (column,
11954                                         G_CALLBACK (column_sizing_notify),
11955                                         tree_view);
11956
11957   _gtk_tree_view_column_unset_tree_view (column);
11958
11959   position = g_list_index (tree_view->priv->columns, column);
11960
11961   tree_view->priv->columns = g_list_remove (tree_view->priv->columns, column);
11962   tree_view->priv->n_columns--;
11963
11964   if (gtk_widget_get_realized (GTK_WIDGET (tree_view)))
11965     {
11966       GList *list;
11967
11968       _gtk_tree_view_column_unrealize_button (column);
11969       for (list = tree_view->priv->columns; list; list = list->next)
11970         {
11971           GtkTreeViewColumn *tmp_column;
11972
11973           tmp_column = GTK_TREE_VIEW_COLUMN (list->data);
11974           if (gtk_tree_view_column_get_visible (tmp_column))
11975             _gtk_tree_view_column_cell_set_dirty (tmp_column, TRUE);
11976         }
11977
11978       if (tree_view->priv->n_columns == 0 &&
11979           gtk_tree_view_get_headers_visible (tree_view))
11980         gdk_window_hide (tree_view->priv->header_window);
11981
11982       gtk_widget_queue_resize (GTK_WIDGET (tree_view));
11983     }
11984
11985   _gtk_tree_view_reset_header_styles (tree_view);
11986
11987   _gtk_tree_view_accessible_remove_column (tree_view, column, position);
11988
11989   g_object_unref (column);
11990   g_signal_emit (tree_view, tree_view_signals[COLUMNS_CHANGED], 0);
11991
11992   return tree_view->priv->n_columns;
11993 }
11994
11995 /**
11996  * gtk_tree_view_insert_column:
11997  * @tree_view: A #GtkTreeView.
11998  * @column: The #GtkTreeViewColumn to be inserted.
11999  * @position: The position to insert @column in.
12000  *
12001  * This inserts the @column into the @tree_view at @position.  If @position is
12002  * -1, then the column is inserted at the end. If @tree_view has
12003  * "fixed_height" mode enabled, then @column must have its "sizing" property
12004  * set to be GTK_TREE_VIEW_COLUMN_FIXED.
12005  *
12006  * Return value: The number of columns in @tree_view after insertion.
12007  **/
12008 gint
12009 gtk_tree_view_insert_column (GtkTreeView       *tree_view,
12010                              GtkTreeViewColumn *column,
12011                              gint               position)
12012 {
12013   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), -1);
12014   g_return_val_if_fail (GTK_IS_TREE_VIEW_COLUMN (column), -1);
12015   g_return_val_if_fail (gtk_tree_view_column_get_tree_view (column) == NULL, -1);
12016
12017   if (tree_view->priv->fixed_height_mode)
12018     g_return_val_if_fail (gtk_tree_view_column_get_sizing (column)
12019                           == GTK_TREE_VIEW_COLUMN_FIXED, -1);
12020
12021   if (position < 0 || position > tree_view->priv->n_columns)
12022     position = tree_view->priv->n_columns;
12023
12024   g_object_ref_sink (column);
12025
12026   if (tree_view->priv->n_columns == 0 &&
12027       gtk_widget_get_realized (GTK_WIDGET (tree_view)) &&
12028       gtk_tree_view_get_headers_visible (tree_view))
12029     {
12030       gdk_window_show (tree_view->priv->header_window);
12031     }
12032
12033   g_signal_connect (column, "notify::sizing",
12034                     G_CALLBACK (column_sizing_notify), tree_view);
12035
12036   tree_view->priv->columns = g_list_insert (tree_view->priv->columns,
12037                                             column, position);
12038   tree_view->priv->n_columns++;
12039
12040   _gtk_tree_view_column_set_tree_view (column, tree_view);
12041
12042   if (gtk_widget_get_realized (GTK_WIDGET (tree_view)))
12043     {
12044       GList *list;
12045
12046       _gtk_tree_view_column_realize_button (column);
12047
12048       for (list = tree_view->priv->columns; list; list = list->next)
12049         {
12050           column = GTK_TREE_VIEW_COLUMN (list->data);
12051           if (gtk_tree_view_column_get_visible (column))
12052             _gtk_tree_view_column_cell_set_dirty (column, TRUE);
12053         }
12054       gtk_widget_queue_resize (GTK_WIDGET (tree_view));
12055     }
12056
12057   _gtk_tree_view_reset_header_styles (tree_view);
12058
12059   _gtk_tree_view_accessible_add_column (tree_view, column, position);
12060
12061   g_signal_emit (tree_view, tree_view_signals[COLUMNS_CHANGED], 0);
12062
12063   return tree_view->priv->n_columns;
12064 }
12065
12066 /**
12067  * gtk_tree_view_insert_column_with_attributes:
12068  * @tree_view: A #GtkTreeView
12069  * @position: The position to insert the new column in
12070  * @title: The title to set the header to
12071  * @cell: The #GtkCellRenderer
12072  * @...: A %NULL-terminated list of attributes
12073  *
12074  * Creates a new #GtkTreeViewColumn and inserts it into the @tree_view at
12075  * @position.  If @position is -1, then the newly created column is inserted at
12076  * the end.  The column is initialized with the attributes given. If @tree_view
12077  * has "fixed_height" mode enabled, then the new column will have its sizing
12078  * property set to be GTK_TREE_VIEW_COLUMN_FIXED.
12079  *
12080  * Return value: The number of columns in @tree_view after insertion.
12081  **/
12082 gint
12083 gtk_tree_view_insert_column_with_attributes (GtkTreeView     *tree_view,
12084                                              gint             position,
12085                                              const gchar     *title,
12086                                              GtkCellRenderer *cell,
12087                                              ...)
12088 {
12089   GtkTreeViewColumn *column;
12090   gchar *attribute;
12091   va_list args;
12092   gint column_id;
12093
12094   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), -1);
12095
12096   column = gtk_tree_view_column_new ();
12097   if (tree_view->priv->fixed_height_mode)
12098     gtk_tree_view_column_set_sizing (column, GTK_TREE_VIEW_COLUMN_FIXED);
12099
12100   gtk_tree_view_column_set_title (column, title);
12101   gtk_tree_view_column_pack_start (column, cell, TRUE);
12102
12103   va_start (args, cell);
12104
12105   attribute = va_arg (args, gchar *);
12106
12107   while (attribute != NULL)
12108     {
12109       column_id = va_arg (args, gint);
12110       gtk_tree_view_column_add_attribute (column, cell, attribute, column_id);
12111       attribute = va_arg (args, gchar *);
12112     }
12113
12114   va_end (args);
12115
12116   return gtk_tree_view_insert_column (tree_view, column, position);
12117 }
12118
12119 /**
12120  * gtk_tree_view_insert_column_with_data_func:
12121  * @tree_view: a #GtkTreeView
12122  * @position: Position to insert, -1 for append
12123  * @title: column title
12124  * @cell: cell renderer for column
12125  * @func: function to set attributes of cell renderer
12126  * @data: data for @func
12127  * @dnotify: destroy notifier for @data
12128  *
12129  * Convenience function that inserts a new column into the #GtkTreeView
12130  * with the given cell renderer and a #GtkCellDataFunc to set cell renderer
12131  * attributes (normally using data from the model). See also
12132  * gtk_tree_view_column_set_cell_data_func(), gtk_tree_view_column_pack_start().
12133  * If @tree_view has "fixed_height" mode enabled, then the new column will have its
12134  * "sizing" property set to be GTK_TREE_VIEW_COLUMN_FIXED.
12135  *
12136  * Return value: number of columns in the tree view post-insert
12137  **/
12138 gint
12139 gtk_tree_view_insert_column_with_data_func  (GtkTreeView               *tree_view,
12140                                              gint                       position,
12141                                              const gchar               *title,
12142                                              GtkCellRenderer           *cell,
12143                                              GtkTreeCellDataFunc        func,
12144                                              gpointer                   data,
12145                                              GDestroyNotify             dnotify)
12146 {
12147   GtkTreeViewColumn *column;
12148
12149   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), -1);
12150
12151   column = gtk_tree_view_column_new ();
12152   if (tree_view->priv->fixed_height_mode)
12153     gtk_tree_view_column_set_sizing (column, GTK_TREE_VIEW_COLUMN_FIXED);
12154
12155   gtk_tree_view_column_set_title (column, title);
12156   gtk_tree_view_column_pack_start (column, cell, TRUE);
12157   gtk_tree_view_column_set_cell_data_func (column, cell, func, data, dnotify);
12158
12159   return gtk_tree_view_insert_column (tree_view, column, position);
12160 }
12161
12162 /**
12163  * gtk_tree_view_get_n_columns:
12164  * @tree_view: a #GtkTreeView
12165  *
12166  * Queries the number of columns in the given @tree_view.
12167  *
12168  * Returns: The number of columns in the @tree_view
12169  *
12170  * Since: 3.4
12171  **/
12172 guint
12173 gtk_tree_view_get_n_columns (GtkTreeView *tree_view)
12174 {
12175   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), 0);
12176
12177   return tree_view->priv->n_columns;
12178 }
12179
12180 /**
12181  * gtk_tree_view_get_column:
12182  * @tree_view: A #GtkTreeView.
12183  * @n: The position of the column, counting from 0.
12184  *
12185  * Gets the #GtkTreeViewColumn at the given position in the #tree_view.
12186  *
12187  * Return value: (transfer none): The #GtkTreeViewColumn, or %NULL if the
12188  *     position is outside the range of columns.
12189  **/
12190 GtkTreeViewColumn *
12191 gtk_tree_view_get_column (GtkTreeView *tree_view,
12192                           gint         n)
12193 {
12194   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), NULL);
12195
12196   if (n < 0 || n >= tree_view->priv->n_columns)
12197     return NULL;
12198
12199   if (tree_view->priv->columns == NULL)
12200     return NULL;
12201
12202   return GTK_TREE_VIEW_COLUMN (g_list_nth (tree_view->priv->columns, n)->data);
12203 }
12204
12205 /**
12206  * gtk_tree_view_get_columns:
12207  * @tree_view: A #GtkTreeView
12208  *
12209  * Returns a #GList of all the #GtkTreeViewColumn s currently in @tree_view.
12210  * The returned list must be freed with g_list_free ().
12211  *
12212  * Return value: (element-type GtkTreeViewColumn) (transfer container): A list of #GtkTreeViewColumn s
12213  **/
12214 GList *
12215 gtk_tree_view_get_columns (GtkTreeView *tree_view)
12216 {
12217   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), NULL);
12218
12219   return g_list_copy (tree_view->priv->columns);
12220 }
12221
12222 /**
12223  * gtk_tree_view_move_column_after:
12224  * @tree_view: A #GtkTreeView
12225  * @column: The #GtkTreeViewColumn to be moved.
12226  * @base_column: (allow-none): The #GtkTreeViewColumn to be moved relative to, or %NULL.
12227  *
12228  * Moves @column to be after to @base_column.  If @base_column is %NULL, then
12229  * @column is placed in the first position.
12230  **/
12231 void
12232 gtk_tree_view_move_column_after (GtkTreeView       *tree_view,
12233                                  GtkTreeViewColumn *column,
12234                                  GtkTreeViewColumn *base_column)
12235 {
12236   GList *column_list_el, *base_el = NULL;
12237
12238   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
12239
12240   column_list_el = g_list_find (tree_view->priv->columns, column);
12241   g_return_if_fail (column_list_el != NULL);
12242
12243   if (base_column)
12244     {
12245       base_el = g_list_find (tree_view->priv->columns, base_column);
12246       g_return_if_fail (base_el != NULL);
12247     }
12248
12249   if (column_list_el->prev == base_el)
12250     return;
12251
12252   tree_view->priv->columns = g_list_remove_link (tree_view->priv->columns, column_list_el);
12253   if (base_el == NULL)
12254     {
12255       column_list_el->prev = NULL;
12256       column_list_el->next = tree_view->priv->columns;
12257       if (column_list_el->next)
12258         column_list_el->next->prev = column_list_el;
12259       tree_view->priv->columns = column_list_el;
12260     }
12261   else
12262     {
12263       column_list_el->prev = base_el;
12264       column_list_el->next = base_el->next;
12265       if (column_list_el->next)
12266         column_list_el->next->prev = column_list_el;
12267       base_el->next = column_list_el;
12268     }
12269
12270   if (gtk_widget_get_realized (GTK_WIDGET (tree_view)))
12271     {
12272       gtk_widget_queue_resize (GTK_WIDGET (tree_view));
12273       gtk_tree_view_size_allocate_columns (GTK_WIDGET (tree_view), NULL);
12274     }
12275
12276   _gtk_tree_view_reset_header_styles (tree_view);
12277
12278   _gtk_tree_view_accessible_reorder_column (tree_view, column);
12279
12280   g_signal_emit (tree_view, tree_view_signals[COLUMNS_CHANGED], 0);
12281 }
12282
12283 /**
12284  * gtk_tree_view_set_expander_column:
12285  * @tree_view: A #GtkTreeView
12286  * @column: %NULL, or the column to draw the expander arrow at.
12287  *
12288  * Sets the column to draw the expander arrow at. It must be in @tree_view.
12289  * If @column is %NULL, then the expander arrow is always at the first
12290  * visible column.
12291  *
12292  * If you do not want expander arrow to appear in your tree, set the
12293  * expander column to a hidden column.
12294  **/
12295 void
12296 gtk_tree_view_set_expander_column (GtkTreeView       *tree_view,
12297                                    GtkTreeViewColumn *column)
12298 {
12299   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
12300   g_return_if_fail (column == NULL || GTK_IS_TREE_VIEW_COLUMN (column));
12301   g_return_if_fail (column == NULL || gtk_tree_view_column_get_tree_view (column) == GTK_WIDGET (tree_view));
12302
12303   if (tree_view->priv->expander_column != column)
12304     {
12305       tree_view->priv->expander_column = column;
12306       g_object_notify (G_OBJECT (tree_view), "expander-column");
12307     }
12308 }
12309
12310 /**
12311  * gtk_tree_view_get_expander_column:
12312  * @tree_view: A #GtkTreeView
12313  *
12314  * Returns the column that is the current expander column.
12315  * This column has the expander arrow drawn next to it.
12316  *
12317  * Return value: (transfer none): The expander column.
12318  **/
12319 GtkTreeViewColumn *
12320 gtk_tree_view_get_expander_column (GtkTreeView *tree_view)
12321 {
12322   GList *list;
12323
12324   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), NULL);
12325
12326   for (list = tree_view->priv->columns; list; list = list->next)
12327     if (gtk_tree_view_is_expander_column (tree_view, GTK_TREE_VIEW_COLUMN (list->data)))
12328       return (GtkTreeViewColumn *) list->data;
12329   return NULL;
12330 }
12331
12332
12333 /**
12334  * gtk_tree_view_set_column_drag_function:
12335  * @tree_view: A #GtkTreeView.
12336  * @func: (allow-none): A function to determine which columns are reorderable, or %NULL.
12337  * @user_data: (allow-none): User data to be passed to @func, or %NULL
12338  * @destroy: (allow-none): Destroy notifier for @user_data, or %NULL
12339  *
12340  * Sets a user function for determining where a column may be dropped when
12341  * dragged.  This function is called on every column pair in turn at the
12342  * beginning of a column drag to determine where a drop can take place.  The
12343  * arguments passed to @func are: the @tree_view, the #GtkTreeViewColumn being
12344  * dragged, the two #GtkTreeViewColumn s determining the drop spot, and
12345  * @user_data.  If either of the #GtkTreeViewColumn arguments for the drop spot
12346  * are %NULL, then they indicate an edge.  If @func is set to be %NULL, then
12347  * @tree_view reverts to the default behavior of allowing all columns to be
12348  * dropped everywhere.
12349  **/
12350 void
12351 gtk_tree_view_set_column_drag_function (GtkTreeView               *tree_view,
12352                                         GtkTreeViewColumnDropFunc  func,
12353                                         gpointer                   user_data,
12354                                         GDestroyNotify             destroy)
12355 {
12356   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
12357
12358   if (tree_view->priv->column_drop_func_data_destroy)
12359     tree_view->priv->column_drop_func_data_destroy (tree_view->priv->column_drop_func_data);
12360
12361   tree_view->priv->column_drop_func = func;
12362   tree_view->priv->column_drop_func_data = user_data;
12363   tree_view->priv->column_drop_func_data_destroy = destroy;
12364 }
12365
12366 /**
12367  * gtk_tree_view_scroll_to_point:
12368  * @tree_view: a #GtkTreeView
12369  * @tree_x: X coordinate of new top-left pixel of visible area, or -1
12370  * @tree_y: Y coordinate of new top-left pixel of visible area, or -1
12371  *
12372  * Scrolls the tree view such that the top-left corner of the visible
12373  * area is @tree_x, @tree_y, where @tree_x and @tree_y are specified
12374  * in tree coordinates.  The @tree_view must be realized before
12375  * this function is called.  If it isn't, you probably want to be
12376  * using gtk_tree_view_scroll_to_cell().
12377  *
12378  * If either @tree_x or @tree_y are -1, then that direction isn't scrolled.
12379  **/
12380 void
12381 gtk_tree_view_scroll_to_point (GtkTreeView *tree_view,
12382                                gint         tree_x,
12383                                gint         tree_y)
12384 {
12385   GtkAdjustment *hadj;
12386   GtkAdjustment *vadj;
12387
12388   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
12389   g_return_if_fail (gtk_widget_get_realized (GTK_WIDGET (tree_view)));
12390
12391   hadj = tree_view->priv->hadjustment;
12392   vadj = tree_view->priv->vadjustment;
12393
12394   if (tree_x != -1)
12395     gtk_adjustment_set_value (hadj, tree_x);
12396   if (tree_y != -1)
12397     gtk_adjustment_set_value (vadj, tree_y);
12398 }
12399
12400 /**
12401  * gtk_tree_view_scroll_to_cell:
12402  * @tree_view: A #GtkTreeView.
12403  * @path: (allow-none): The path of the row to move to, or %NULL.
12404  * @column: (allow-none): The #GtkTreeViewColumn to move horizontally to, or %NULL.
12405  * @use_align: whether to use alignment arguments, or %FALSE.
12406  * @row_align: The vertical alignment of the row specified by @path.
12407  * @col_align: The horizontal alignment of the column specified by @column.
12408  *
12409  * Moves the alignments of @tree_view to the position specified by @column and
12410  * @path.  If @column is %NULL, then no horizontal scrolling occurs.  Likewise,
12411  * if @path is %NULL no vertical scrolling occurs.  At a minimum, one of @column
12412  * or @path need to be non-%NULL.  @row_align determines where the row is
12413  * placed, and @col_align determines where @column is placed.  Both are expected
12414  * to be between 0.0 and 1.0. 0.0 means left/top alignment, 1.0 means
12415  * right/bottom alignment, 0.5 means center.
12416  *
12417  * If @use_align is %FALSE, then the alignment arguments are ignored, and the
12418  * tree does the minimum amount of work to scroll the cell onto the screen.
12419  * This means that the cell will be scrolled to the edge closest to its current
12420  * position.  If the cell is currently visible on the screen, nothing is done.
12421  *
12422  * This function only works if the model is set, and @path is a valid row on the
12423  * model.  If the model changes before the @tree_view is realized, the centered
12424  * path will be modified to reflect this change.
12425  **/
12426 void
12427 gtk_tree_view_scroll_to_cell (GtkTreeView       *tree_view,
12428                               GtkTreePath       *path,
12429                               GtkTreeViewColumn *column,
12430                               gboolean           use_align,
12431                               gfloat             row_align,
12432                               gfloat             col_align)
12433 {
12434   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
12435   g_return_if_fail (tree_view->priv->model != NULL);
12436   g_return_if_fail (tree_view->priv->tree != NULL);
12437   g_return_if_fail (row_align >= 0.0 && row_align <= 1.0);
12438   g_return_if_fail (col_align >= 0.0 && col_align <= 1.0);
12439   g_return_if_fail (path != NULL || column != NULL);
12440
12441 #if 0
12442   g_print ("gtk_tree_view_scroll_to_cell:\npath: %s\ncolumn: %s\nuse_align: %d\nrow_align: %f\ncol_align: %f\n",
12443            gtk_tree_path_to_string (path), column?"non-null":"null", use_align, row_align, col_align);
12444 #endif
12445   row_align = CLAMP (row_align, 0.0, 1.0);
12446   col_align = CLAMP (col_align, 0.0, 1.0);
12447
12448
12449   /* Note: Despite the benefits that come from having one code path for the
12450    * scrolling code, we short-circuit validate_visible_area's immplementation as
12451    * it is much slower than just going to the point.
12452    */
12453   if (!gtk_widget_get_visible (GTK_WIDGET (tree_view)) ||
12454       !gtk_widget_get_realized (GTK_WIDGET (tree_view)) ||
12455       _gtk_widget_get_alloc_needed (GTK_WIDGET (tree_view)) ||
12456       GTK_RBNODE_FLAG_SET (tree_view->priv->tree->root, GTK_RBNODE_DESCENDANTS_INVALID))
12457     {
12458       if (tree_view->priv->scroll_to_path)
12459         gtk_tree_row_reference_free (tree_view->priv->scroll_to_path);
12460
12461       tree_view->priv->scroll_to_path = NULL;
12462       tree_view->priv->scroll_to_column = NULL;
12463
12464       if (path)
12465         tree_view->priv->scroll_to_path = gtk_tree_row_reference_new_proxy (G_OBJECT (tree_view), tree_view->priv->model, path);
12466       if (column)
12467         tree_view->priv->scroll_to_column = column;
12468       tree_view->priv->scroll_to_use_align = use_align;
12469       tree_view->priv->scroll_to_row_align = row_align;
12470       tree_view->priv->scroll_to_col_align = col_align;
12471
12472       install_presize_handler (tree_view);
12473     }
12474   else
12475     {
12476       GdkRectangle cell_rect;
12477       GdkRectangle vis_rect;
12478       gint dest_x, dest_y;
12479
12480       gtk_tree_view_get_background_area (tree_view, path, column, &cell_rect);
12481       gtk_tree_view_get_visible_rect (tree_view, &vis_rect);
12482
12483       cell_rect.y = TREE_WINDOW_Y_TO_RBTREE_Y (tree_view, cell_rect.y);
12484
12485       dest_x = vis_rect.x;
12486       dest_y = vis_rect.y;
12487
12488       if (column)
12489         {
12490           if (use_align)
12491             {
12492               dest_x = cell_rect.x - ((vis_rect.width - cell_rect.width) * col_align);
12493             }
12494           else
12495             {
12496               if (cell_rect.x < vis_rect.x)
12497                 dest_x = cell_rect.x;
12498               if (cell_rect.x + cell_rect.width > vis_rect.x + vis_rect.width)
12499                 dest_x = cell_rect.x + cell_rect.width - vis_rect.width;
12500             }
12501         }
12502
12503       if (path)
12504         {
12505           if (use_align)
12506             {
12507               dest_y = cell_rect.y - ((vis_rect.height - cell_rect.height) * row_align);
12508               dest_y = MAX (dest_y, 0);
12509             }
12510           else
12511             {
12512               if (cell_rect.y < vis_rect.y)
12513                 dest_y = cell_rect.y;
12514               if (cell_rect.y + cell_rect.height > vis_rect.y + vis_rect.height)
12515                 dest_y = cell_rect.y + cell_rect.height - vis_rect.height;
12516             }
12517         }
12518
12519       gtk_tree_view_scroll_to_point (tree_view, dest_x, dest_y);
12520     }
12521 }
12522
12523 /**
12524  * gtk_tree_view_row_activated:
12525  * @tree_view: A #GtkTreeView
12526  * @path: The #GtkTreePath to be activated.
12527  * @column: The #GtkTreeViewColumn to be activated.
12528  *
12529  * Activates the cell determined by @path and @column.
12530  **/
12531 void
12532 gtk_tree_view_row_activated (GtkTreeView       *tree_view,
12533                              GtkTreePath       *path,
12534                              GtkTreeViewColumn *column)
12535 {
12536   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
12537
12538   g_signal_emit (tree_view, tree_view_signals[ROW_ACTIVATED], 0, path, column);
12539 }
12540
12541
12542 static void
12543 gtk_tree_view_expand_all_emission_helper (GtkRBTree *tree,
12544                                           GtkRBNode *node,
12545                                           gpointer   data)
12546 {
12547   GtkTreeView *tree_view = data;
12548
12549   if ((node->flags & GTK_RBNODE_IS_PARENT) == GTK_RBNODE_IS_PARENT &&
12550       node->children)
12551     {
12552       GtkTreePath *path;
12553       GtkTreeIter iter;
12554
12555       path = _gtk_tree_view_find_path (tree_view, tree, node);
12556       gtk_tree_model_get_iter (tree_view->priv->model, &iter, path);
12557
12558       g_signal_emit (tree_view, tree_view_signals[ROW_EXPANDED], 0, &iter, path);
12559
12560       gtk_tree_path_free (path);
12561     }
12562
12563   if (node->children)
12564     _gtk_rbtree_traverse (node->children,
12565                           node->children->root,
12566                           G_PRE_ORDER,
12567                           gtk_tree_view_expand_all_emission_helper,
12568                           tree_view);
12569 }
12570
12571 /**
12572  * gtk_tree_view_expand_all:
12573  * @tree_view: A #GtkTreeView.
12574  *
12575  * Recursively expands all nodes in the @tree_view.
12576  **/
12577 void
12578 gtk_tree_view_expand_all (GtkTreeView *tree_view)
12579 {
12580   GtkTreePath *path;
12581   GtkRBTree *tree;
12582   GtkRBNode *node;
12583
12584   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
12585
12586   if (tree_view->priv->tree == NULL)
12587     return;
12588
12589   path = gtk_tree_path_new_first ();
12590   _gtk_tree_view_find_node (tree_view, path, &tree, &node);
12591
12592   while (node)
12593     {
12594       gtk_tree_view_real_expand_row (tree_view, path, tree, node, TRUE, FALSE);
12595       node = _gtk_rbtree_next (tree, node);
12596       gtk_tree_path_next (path);
12597   }
12598
12599   gtk_tree_path_free (path);
12600 }
12601
12602 /**
12603  * gtk_tree_view_collapse_all:
12604  * @tree_view: A #GtkTreeView.
12605  *
12606  * Recursively collapses all visible, expanded nodes in @tree_view.
12607  **/
12608 void
12609 gtk_tree_view_collapse_all (GtkTreeView *tree_view)
12610 {
12611   GtkRBTree *tree;
12612   GtkRBNode *node;
12613   GtkTreePath *path;
12614   gint *indices;
12615
12616   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
12617
12618   if (tree_view->priv->tree == NULL)
12619     return;
12620
12621   path = gtk_tree_path_new ();
12622   gtk_tree_path_down (path);
12623   indices = gtk_tree_path_get_indices (path);
12624
12625   tree = tree_view->priv->tree;
12626   node = tree->root;
12627   while (node && node->left != tree->nil)
12628     node = node->left;
12629
12630   while (node)
12631     {
12632       if (node->children)
12633         gtk_tree_view_real_collapse_row (tree_view, path, tree, node, FALSE);
12634       indices[0]++;
12635       node = _gtk_rbtree_next (tree, node);
12636     }
12637
12638   gtk_tree_path_free (path);
12639 }
12640
12641 /**
12642  * gtk_tree_view_expand_to_path:
12643  * @tree_view: A #GtkTreeView.
12644  * @path: path to a row.
12645  *
12646  * Expands the row at @path. This will also expand all parent rows of
12647  * @path as necessary.
12648  *
12649  * Since: 2.2
12650  **/
12651 void
12652 gtk_tree_view_expand_to_path (GtkTreeView *tree_view,
12653                               GtkTreePath *path)
12654 {
12655   gint i, depth;
12656   gint *indices;
12657   GtkTreePath *tmp;
12658
12659   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
12660   g_return_if_fail (path != NULL);
12661
12662   depth = gtk_tree_path_get_depth (path);
12663   indices = gtk_tree_path_get_indices (path);
12664
12665   tmp = gtk_tree_path_new ();
12666   g_return_if_fail (tmp != NULL);
12667
12668   for (i = 0; i < depth; i++)
12669     {
12670       gtk_tree_path_append_index (tmp, indices[i]);
12671       gtk_tree_view_expand_row (tree_view, tmp, FALSE);
12672     }
12673
12674   gtk_tree_path_free (tmp);
12675 }
12676
12677 /* FIXME the bool return values for expand_row and collapse_row are
12678  * not analagous; they should be TRUE if the row had children and
12679  * was not already in the requested state.
12680  */
12681
12682
12683 static gboolean
12684 gtk_tree_view_real_expand_row (GtkTreeView *tree_view,
12685                                GtkTreePath *path,
12686                                GtkRBTree   *tree,
12687                                GtkRBNode   *node,
12688                                gboolean     open_all,
12689                                gboolean     animate)
12690 {
12691   GtkTreeIter iter;
12692   GtkTreeIter temp;
12693   gboolean expand;
12694
12695   if (animate)
12696     g_object_get (gtk_widget_get_settings (GTK_WIDGET (tree_view)),
12697                   "gtk-enable-animations", &animate,
12698                   NULL);
12699
12700   remove_auto_expand_timeout (tree_view);
12701
12702   if (node->children && !open_all)
12703     return FALSE;
12704
12705   if (! GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_PARENT))
12706     return FALSE;
12707
12708   gtk_tree_model_get_iter (tree_view->priv->model, &iter, path);
12709   if (! gtk_tree_model_iter_has_child (tree_view->priv->model, &iter))
12710     return FALSE;
12711
12712
12713    if (node->children && open_all)
12714     {
12715       gboolean retval = FALSE;
12716       GtkTreePath *tmp_path = gtk_tree_path_copy (path);
12717
12718       gtk_tree_path_append_index (tmp_path, 0);
12719       tree = node->children;
12720       node = tree->root;
12721       while (node->left != tree->nil)
12722         node = node->left;
12723       /* try to expand the children */
12724       do
12725         {
12726          gboolean t;
12727          t = gtk_tree_view_real_expand_row (tree_view, tmp_path, tree, node,
12728                                             TRUE, animate);
12729          if (t)
12730            retval = TRUE;
12731
12732          gtk_tree_path_next (tmp_path);
12733          node = _gtk_rbtree_next (tree, node);
12734        }
12735       while (node != NULL);
12736
12737       gtk_tree_path_free (tmp_path);
12738
12739       return retval;
12740     }
12741
12742   g_signal_emit (tree_view, tree_view_signals[TEST_EXPAND_ROW], 0, &iter, path, &expand);
12743
12744   if (!gtk_tree_model_iter_has_child (tree_view->priv->model, &iter))
12745     return FALSE;
12746
12747   if (expand)
12748     return FALSE;
12749
12750   node->children = _gtk_rbtree_new ();
12751   node->children->parent_tree = tree;
12752   node->children->parent_node = node;
12753
12754   gtk_tree_model_iter_children (tree_view->priv->model, &temp, &iter);
12755
12756   gtk_tree_view_build_tree (tree_view,
12757                             node->children,
12758                             &temp,
12759                             gtk_tree_path_get_depth (path) + 1,
12760                             open_all);
12761
12762   if (animate)
12763     {
12764       GtkStyleContext *context;
12765
12766       context = gtk_widget_get_style_context (GTK_WIDGET (tree_view));
12767
12768       gtk_style_context_save (context);
12769       gtk_style_context_add_class (context, GTK_STYLE_CLASS_EXPANDER);
12770
12771       gtk_style_context_notify_state_change (context, tree_view->priv->bin_window,
12772                                              node, GTK_STATE_ACTIVE, TRUE);
12773
12774       _gtk_style_context_invalidate_animation_areas (context);
12775       gtk_style_context_restore (context);
12776     }
12777
12778   install_presize_handler (tree_view);
12779
12780   g_signal_emit (tree_view, tree_view_signals[ROW_EXPANDED], 0, &iter, path);
12781   if (open_all && node->children)
12782     {
12783       _gtk_rbtree_traverse (node->children,
12784                             node->children->root,
12785                             G_PRE_ORDER,
12786                             gtk_tree_view_expand_all_emission_helper,
12787                             tree_view);
12788     }
12789   return TRUE;
12790 }
12791
12792
12793 /**
12794  * gtk_tree_view_expand_row:
12795  * @tree_view: a #GtkTreeView
12796  * @path: path to a row
12797  * @open_all: whether to recursively expand, or just expand immediate children
12798  *
12799  * Opens the row so its children are visible.
12800  *
12801  * Return value: %TRUE if the row existed and had children
12802  **/
12803 gboolean
12804 gtk_tree_view_expand_row (GtkTreeView *tree_view,
12805                           GtkTreePath *path,
12806                           gboolean     open_all)
12807 {
12808   GtkRBTree *tree;
12809   GtkRBNode *node;
12810
12811   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), FALSE);
12812   g_return_val_if_fail (tree_view->priv->model != NULL, FALSE);
12813   g_return_val_if_fail (path != NULL, FALSE);
12814
12815   if (_gtk_tree_view_find_node (tree_view,
12816                                 path,
12817                                 &tree,
12818                                 &node))
12819     return FALSE;
12820
12821   if (tree != NULL)
12822     return gtk_tree_view_real_expand_row (tree_view, path, tree, node, open_all, FALSE);
12823   else
12824     return FALSE;
12825 }
12826
12827 static gboolean
12828 gtk_tree_view_real_collapse_row (GtkTreeView *tree_view,
12829                                  GtkTreePath *path,
12830                                  GtkRBTree   *tree,
12831                                  GtkRBNode   *node,
12832                                  gboolean     animate)
12833 {
12834   GtkTreeIter iter;
12835   GtkTreeIter children;
12836   gboolean collapse;
12837   gint x, y;
12838   GList *list;
12839   GdkWindow *child;
12840
12841   if (animate)
12842     g_object_get (gtk_widget_get_settings (GTK_WIDGET (tree_view)),
12843                   "gtk-enable-animations", &animate,
12844                   NULL);
12845
12846   remove_auto_expand_timeout (tree_view);
12847
12848   if (node->children == NULL)
12849     return FALSE;
12850   gtk_tree_model_get_iter (tree_view->priv->model, &iter, path);
12851
12852   g_signal_emit (tree_view, tree_view_signals[TEST_COLLAPSE_ROW], 0, &iter, path, &collapse);
12853
12854   if (collapse)
12855     return FALSE;
12856
12857   /* if the prelighted node is a child of us, we want to unprelight it.  We have
12858    * a chance to prelight the correct node below */
12859
12860   if (tree_view->priv->prelight_tree)
12861     {
12862       GtkRBTree *parent_tree;
12863       GtkRBNode *parent_node;
12864
12865       parent_tree = tree_view->priv->prelight_tree->parent_tree;
12866       parent_node = tree_view->priv->prelight_tree->parent_node;
12867       while (parent_tree)
12868         {
12869           if (parent_tree == tree && parent_node == node)
12870             {
12871               ensure_unprelighted (tree_view);
12872               break;
12873             }
12874           parent_node = parent_tree->parent_node;
12875           parent_tree = parent_tree->parent_tree;
12876         }
12877     }
12878
12879   TREE_VIEW_INTERNAL_ASSERT (gtk_tree_model_iter_children (tree_view->priv->model, &children, &iter), FALSE);
12880
12881   for (list = tree_view->priv->columns; list; list = list->next)
12882     {
12883       GtkTreeViewColumn *column = list->data;
12884
12885       if (gtk_tree_view_column_get_visible (column) == FALSE)
12886         continue;
12887       if (gtk_tree_view_column_get_sizing (column) == GTK_TREE_VIEW_COLUMN_AUTOSIZE)
12888         _gtk_tree_view_column_cell_set_dirty (column, TRUE);
12889     }
12890
12891   if (tree_view->priv->destroy_count_func)
12892     {
12893       GtkTreePath *child_path;
12894       gint child_count = 0;
12895       child_path = gtk_tree_path_copy (path);
12896       gtk_tree_path_down (child_path);
12897       if (node->children)
12898         _gtk_rbtree_traverse (node->children, node->children->root, G_POST_ORDER, count_children_helper, &child_count);
12899       tree_view->priv->destroy_count_func (tree_view, child_path, child_count, tree_view->priv->destroy_count_data);
12900       gtk_tree_path_free (child_path);
12901     }
12902
12903   if (gtk_tree_row_reference_valid (tree_view->priv->cursor))
12904     {
12905       GtkTreePath *cursor_path = gtk_tree_row_reference_get_path (tree_view->priv->cursor);
12906
12907       if (gtk_tree_path_is_ancestor (path, cursor_path))
12908         {
12909           gtk_tree_row_reference_free (tree_view->priv->cursor);
12910           tree_view->priv->cursor = gtk_tree_row_reference_new_proxy (G_OBJECT (tree_view),
12911                                                                       tree_view->priv->model,
12912                                                                       path);
12913         }
12914       gtk_tree_path_free (cursor_path);
12915     }
12916
12917   if (gtk_tree_row_reference_valid (tree_view->priv->anchor))
12918     {
12919       GtkTreePath *anchor_path = gtk_tree_row_reference_get_path (tree_view->priv->anchor);
12920       if (gtk_tree_path_is_ancestor (path, anchor_path))
12921         {
12922           gtk_tree_row_reference_free (tree_view->priv->anchor);
12923           tree_view->priv->anchor = NULL;
12924         }
12925       gtk_tree_path_free (anchor_path);
12926     }
12927
12928   /* Stop a pending double click */
12929   tree_view->priv->last_button_x = -1;
12930   tree_view->priv->last_button_y = -1;
12931
12932   _gtk_tree_view_accessible_remove (tree_view, node->children, NULL);
12933
12934   if (gtk_tree_view_unref_and_check_selection_tree (tree_view, node->children))
12935     {
12936       _gtk_rbtree_remove (node->children);
12937       g_signal_emit_by_name (tree_view->priv->selection, "changed");
12938     }
12939   else
12940     _gtk_rbtree_remove (node->children);
12941
12942   if (animate)
12943     {
12944       GtkStyleContext *context;
12945
12946       context = gtk_widget_get_style_context (GTK_WIDGET (tree_view));
12947
12948       gtk_style_context_save (context);
12949       gtk_style_context_add_class (context, GTK_STYLE_CLASS_EXPANDER);
12950
12951       gtk_style_context_notify_state_change (context, tree_view->priv->bin_window,
12952                                              node, GTK_STATE_ACTIVE, FALSE);
12953
12954       _gtk_style_context_invalidate_animation_areas (context);
12955       gtk_style_context_restore (context);
12956     }
12957
12958   if (gtk_widget_get_mapped (GTK_WIDGET (tree_view)))
12959     {
12960       gtk_widget_queue_resize (GTK_WIDGET (tree_view));
12961     }
12962
12963   g_signal_emit (tree_view, tree_view_signals[ROW_COLLAPSED], 0, &iter, path);
12964
12965   if (gtk_widget_get_mapped (GTK_WIDGET (tree_view)))
12966     {
12967       /* now that we've collapsed all rows, we want to try to set the prelight
12968        * again. To do this, we fake a motion event and send it to ourselves. */
12969
12970       child = gdk_window_get_device_position (gdk_window_get_parent (tree_view->priv->bin_window),
12971                                               gdk_device_manager_get_client_pointer (
12972                                                 gdk_display_get_device_manager (
12973                                                   gtk_widget_get_display (GTK_WIDGET (tree_view)))),
12974                                               &x, &y, NULL);
12975       if (child == tree_view->priv->bin_window)
12976         {
12977           GdkEventMotion event;
12978           gint child_x, child_y;
12979
12980           gdk_window_get_position (child, &child_x, &child_y);
12981
12982           event.window = tree_view->priv->bin_window;
12983           event.x = x - child_x;
12984           event.y = y - child_y;
12985
12986           /* despite the fact this isn't a real event, I'm almost positive it will
12987            * never trigger a drag event.  maybe_drag is the only function that uses
12988            * more than just event.x and event.y. */
12989           gtk_tree_view_motion_bin_window (GTK_WIDGET (tree_view), &event);
12990         }
12991     }
12992
12993   return TRUE;
12994 }
12995
12996 /**
12997  * gtk_tree_view_collapse_row:
12998  * @tree_view: a #GtkTreeView
12999  * @path: path to a row in the @tree_view
13000  *
13001  * Collapses a row (hides its child rows, if they exist).
13002  *
13003  * Return value: %TRUE if the row was collapsed.
13004  **/
13005 gboolean
13006 gtk_tree_view_collapse_row (GtkTreeView *tree_view,
13007                             GtkTreePath *path)
13008 {
13009   GtkRBTree *tree;
13010   GtkRBNode *node;
13011
13012   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), FALSE);
13013   g_return_val_if_fail (tree_view->priv->tree != NULL, FALSE);
13014   g_return_val_if_fail (path != NULL, FALSE);
13015
13016   if (_gtk_tree_view_find_node (tree_view,
13017                                 path,
13018                                 &tree,
13019                                 &node))
13020     return FALSE;
13021
13022   if (tree == NULL || node->children == NULL)
13023     return FALSE;
13024
13025   return gtk_tree_view_real_collapse_row (tree_view, path, tree, node, FALSE);
13026 }
13027
13028 static void
13029 gtk_tree_view_map_expanded_rows_helper (GtkTreeView            *tree_view,
13030                                         GtkRBTree              *tree,
13031                                         GtkTreePath            *path,
13032                                         GtkTreeViewMappingFunc  func,
13033                                         gpointer                user_data)
13034 {
13035   GtkRBNode *node;
13036
13037   if (tree == NULL || tree->root == NULL)
13038     return;
13039
13040   node = tree->root;
13041
13042   while (node && node->left != tree->nil)
13043     node = node->left;
13044
13045   while (node)
13046     {
13047       if (node->children)
13048         {
13049           (* func) (tree_view, path, user_data);
13050           gtk_tree_path_down (path);
13051           gtk_tree_view_map_expanded_rows_helper (tree_view, node->children, path, func, user_data);
13052           gtk_tree_path_up (path);
13053         }
13054       gtk_tree_path_next (path);
13055       node = _gtk_rbtree_next (tree, node);
13056     }
13057 }
13058
13059 /**
13060  * gtk_tree_view_map_expanded_rows:
13061  * @tree_view: A #GtkTreeView
13062  * @func: (scope call): A function to be called
13063  * @data: User data to be passed to the function.
13064  *
13065  * Calls @func on all expanded rows.
13066  **/
13067 void
13068 gtk_tree_view_map_expanded_rows (GtkTreeView            *tree_view,
13069                                  GtkTreeViewMappingFunc  func,
13070                                  gpointer                user_data)
13071 {
13072   GtkTreePath *path;
13073
13074   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
13075   g_return_if_fail (func != NULL);
13076
13077   path = gtk_tree_path_new_first ();
13078
13079   gtk_tree_view_map_expanded_rows_helper (tree_view,
13080                                           tree_view->priv->tree,
13081                                           path, func, user_data);
13082
13083   gtk_tree_path_free (path);
13084 }
13085
13086 /**
13087  * gtk_tree_view_row_expanded:
13088  * @tree_view: A #GtkTreeView.
13089  * @path: A #GtkTreePath to test expansion state.
13090  *
13091  * Returns %TRUE if the node pointed to by @path is expanded in @tree_view.
13092  *
13093  * Return value: %TRUE if #path is expanded.
13094  **/
13095 gboolean
13096 gtk_tree_view_row_expanded (GtkTreeView *tree_view,
13097                             GtkTreePath *path)
13098 {
13099   GtkRBTree *tree;
13100   GtkRBNode *node;
13101
13102   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), FALSE);
13103   g_return_val_if_fail (path != NULL, FALSE);
13104
13105   _gtk_tree_view_find_node (tree_view, path, &tree, &node);
13106
13107   if (node == NULL)
13108     return FALSE;
13109
13110   return (node->children != NULL);
13111 }
13112
13113 /**
13114  * gtk_tree_view_get_reorderable:
13115  * @tree_view: a #GtkTreeView
13116  *
13117  * Retrieves whether the user can reorder the tree via drag-and-drop. See
13118  * gtk_tree_view_set_reorderable().
13119  *
13120  * Return value: %TRUE if the tree can be reordered.
13121  **/
13122 gboolean
13123 gtk_tree_view_get_reorderable (GtkTreeView *tree_view)
13124 {
13125   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), FALSE);
13126
13127   return tree_view->priv->reorderable;
13128 }
13129
13130 /**
13131  * gtk_tree_view_set_reorderable:
13132  * @tree_view: A #GtkTreeView.
13133  * @reorderable: %TRUE, if the tree can be reordered.
13134  *
13135  * This function is a convenience function to allow you to reorder
13136  * models that support the #GtkTreeDragSourceIface and the
13137  * #GtkTreeDragDestIface.  Both #GtkTreeStore and #GtkListStore support
13138  * these.  If @reorderable is %TRUE, then the user can reorder the
13139  * model by dragging and dropping rows. The developer can listen to
13140  * these changes by connecting to the model's row_inserted and
13141  * row_deleted signals. The reordering is implemented by setting up
13142  * the tree view as a drag source and destination. Therefore, drag and
13143  * drop can not be used in a reorderable view for any other purpose.
13144  *
13145  * This function does not give you any degree of control over the order -- any
13146  * reordering is allowed.  If more control is needed, you should probably
13147  * handle drag and drop manually.
13148  **/
13149 void
13150 gtk_tree_view_set_reorderable (GtkTreeView *tree_view,
13151                                gboolean     reorderable)
13152 {
13153   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
13154
13155   reorderable = reorderable != FALSE;
13156
13157   if (tree_view->priv->reorderable == reorderable)
13158     return;
13159
13160   if (reorderable)
13161     {
13162       const GtkTargetEntry row_targets[] = {
13163         { "GTK_TREE_MODEL_ROW", GTK_TARGET_SAME_WIDGET, 0 }
13164       };
13165
13166       gtk_tree_view_enable_model_drag_source (tree_view,
13167                                               GDK_BUTTON1_MASK,
13168                                               row_targets,
13169                                               G_N_ELEMENTS (row_targets),
13170                                               GDK_ACTION_MOVE);
13171       gtk_tree_view_enable_model_drag_dest (tree_view,
13172                                             row_targets,
13173                                             G_N_ELEMENTS (row_targets),
13174                                             GDK_ACTION_MOVE);
13175     }
13176   else
13177     {
13178       gtk_tree_view_unset_rows_drag_source (tree_view);
13179       gtk_tree_view_unset_rows_drag_dest (tree_view);
13180     }
13181
13182   tree_view->priv->reorderable = reorderable;
13183
13184   g_object_notify (G_OBJECT (tree_view), "reorderable");
13185 }
13186
13187 static void
13188 gtk_tree_view_real_set_cursor (GtkTreeView     *tree_view,
13189                                GtkTreePath     *path,
13190                                gboolean         clear_and_select,
13191                                gboolean         clamp_node)
13192 {
13193   GtkRBTree *tree = NULL;
13194   GtkRBNode *node = NULL;
13195
13196   if (gtk_tree_row_reference_valid (tree_view->priv->cursor))
13197     {
13198       GtkTreePath *cursor_path;
13199       cursor_path = gtk_tree_row_reference_get_path (tree_view->priv->cursor);
13200       gtk_tree_view_queue_draw_path (tree_view, cursor_path, NULL);
13201       gtk_tree_path_free (cursor_path);
13202     }
13203
13204   gtk_tree_row_reference_free (tree_view->priv->cursor);
13205   tree_view->priv->cursor = NULL;
13206
13207   /* One cannot set the cursor on a separator.   Also, if
13208    * _gtk_tree_view_find_node returns TRUE, it ran out of tree
13209    * before finding the tree and node belonging to path.  The
13210    * path maps to a non-existing path and we will silently bail out.
13211    * We unset tree and node to avoid further processing.
13212    */
13213   if (!row_is_separator (tree_view, NULL, path)
13214       && _gtk_tree_view_find_node (tree_view, path, &tree, &node) == FALSE)
13215     {
13216       tree_view->priv->cursor =
13217           gtk_tree_row_reference_new_proxy (G_OBJECT (tree_view),
13218                                             tree_view->priv->model,
13219                                             path);
13220     }
13221   else
13222     {
13223       tree = NULL;
13224       node = NULL;
13225     }
13226
13227   if (tree != NULL)
13228     {
13229       GtkRBTree *new_tree = NULL;
13230       GtkRBNode *new_node = NULL;
13231
13232       if (clear_and_select && !tree_view->priv->modify_selection_pressed)
13233         {
13234           GtkTreeSelectMode mode = 0;
13235
13236           if (tree_view->priv->extend_selection_pressed)
13237             mode |= GTK_TREE_SELECT_MODE_EXTEND;
13238
13239           _gtk_tree_selection_internal_select_node (tree_view->priv->selection,
13240                                                     node, tree, path, mode,
13241                                                     FALSE);
13242         }
13243
13244       /* We have to re-find tree and node here again, somebody might have
13245        * cleared the node or the whole tree in the GtkTreeSelection::changed
13246        * callback. If the nodes differ we bail out here.
13247        */
13248       _gtk_tree_view_find_node (tree_view, path, &new_tree, &new_node);
13249
13250       if (tree != new_tree || node != new_node)
13251         return;
13252
13253       if (clamp_node)
13254         {
13255           gtk_tree_view_clamp_node_visible (tree_view, tree, node);
13256           _gtk_tree_view_queue_draw_node (tree_view, tree, node, NULL);
13257         }
13258     }
13259
13260   g_signal_emit (tree_view, tree_view_signals[CURSOR_CHANGED], 0);
13261 }
13262
13263 /**
13264  * gtk_tree_view_get_cursor:
13265  * @tree_view: A #GtkTreeView
13266  * @path: (out) (transfer full) (allow-none): A pointer to be filled with the current cursor path, or %NULL
13267  * @focus_column: (out) (transfer none) (allow-none): A pointer to be filled with the current focus column, or %NULL
13268  *
13269  * Fills in @path and @focus_column with the current path and focus column.  If
13270  * the cursor isn't currently set, then *@path will be %NULL.  If no column
13271  * currently has focus, then *@focus_column will be %NULL.
13272  *
13273  * The returned #GtkTreePath must be freed with gtk_tree_path_free() when
13274  * you are done with it.
13275  **/
13276 void
13277 gtk_tree_view_get_cursor (GtkTreeView        *tree_view,
13278                           GtkTreePath       **path,
13279                           GtkTreeViewColumn **focus_column)
13280 {
13281   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
13282
13283   if (path)
13284     {
13285       if (gtk_tree_row_reference_valid (tree_view->priv->cursor))
13286         *path = gtk_tree_row_reference_get_path (tree_view->priv->cursor);
13287       else
13288         *path = NULL;
13289     }
13290
13291   if (focus_column)
13292     {
13293       *focus_column = tree_view->priv->focus_column;
13294     }
13295 }
13296
13297 /**
13298  * gtk_tree_view_set_cursor:
13299  * @tree_view: A #GtkTreeView
13300  * @path: A #GtkTreePath
13301  * @focus_column: (allow-none): A #GtkTreeViewColumn, or %NULL
13302  * @start_editing: %TRUE if the specified cell should start being edited.
13303  *
13304  * Sets the current keyboard focus to be at @path, and selects it.  This is
13305  * useful when you want to focus the user's attention on a particular row.  If
13306  * @focus_column is not %NULL, then focus is given to the column specified by
13307  * it. Additionally, if @focus_column is specified, and @start_editing is
13308  * %TRUE, then editing should be started in the specified cell.
13309  * This function is often followed by @gtk_widget_grab_focus (@tree_view)
13310  * in order to give keyboard focus to the widget.  Please note that editing
13311  * can only happen when the widget is realized.
13312  *
13313  * If @path is invalid for @model, the current cursor (if any) will be unset
13314  * and the function will return without failing.
13315  **/
13316 void
13317 gtk_tree_view_set_cursor (GtkTreeView       *tree_view,
13318                           GtkTreePath       *path,
13319                           GtkTreeViewColumn *focus_column,
13320                           gboolean           start_editing)
13321 {
13322   gtk_tree_view_set_cursor_on_cell (tree_view, path, focus_column,
13323                                     NULL, start_editing);
13324 }
13325
13326 /**
13327  * gtk_tree_view_set_cursor_on_cell:
13328  * @tree_view: A #GtkTreeView
13329  * @path: A #GtkTreePath
13330  * @focus_column: (allow-none): A #GtkTreeViewColumn, or %NULL
13331  * @focus_cell: (allow-none): A #GtkCellRenderer, or %NULL
13332  * @start_editing: %TRUE if the specified cell should start being edited.
13333  *
13334  * Sets the current keyboard focus to be at @path, and selects it.  This is
13335  * useful when you want to focus the user's attention on a particular row.  If
13336  * @focus_column is not %NULL, then focus is given to the column specified by
13337  * it. If @focus_column and @focus_cell are not %NULL, and @focus_column
13338  * contains 2 or more editable or activatable cells, then focus is given to
13339  * the cell specified by @focus_cell. Additionally, if @focus_column is
13340  * specified, and @start_editing is %TRUE, then editing should be started in
13341  * the specified cell.  This function is often followed by
13342  * @gtk_widget_grab_focus (@tree_view) in order to give keyboard focus to the
13343  * widget.  Please note that editing can only happen when the widget is
13344  * realized.
13345  *
13346  * If @path is invalid for @model, the current cursor (if any) will be unset
13347  * and the function will return without failing.
13348  *
13349  * Since: 2.2
13350  **/
13351 void
13352 gtk_tree_view_set_cursor_on_cell (GtkTreeView       *tree_view,
13353                                   GtkTreePath       *path,
13354                                   GtkTreeViewColumn *focus_column,
13355                                   GtkCellRenderer   *focus_cell,
13356                                   gboolean           start_editing)
13357 {
13358   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
13359   g_return_if_fail (path != NULL);
13360   g_return_if_fail (focus_column == NULL || GTK_IS_TREE_VIEW_COLUMN (focus_column));
13361
13362   if (!tree_view->priv->model)
13363     return;
13364
13365   if (focus_cell)
13366     {
13367       g_return_if_fail (focus_column);
13368       g_return_if_fail (GTK_IS_CELL_RENDERER (focus_cell));
13369     }
13370
13371   /* cancel the current editing, if it exists */
13372   if (tree_view->priv->edited_column &&
13373       gtk_cell_area_get_edit_widget
13374       (gtk_cell_layout_get_area (GTK_CELL_LAYOUT (tree_view->priv->edited_column))))
13375     gtk_tree_view_stop_editing (tree_view, TRUE);
13376
13377   gtk_tree_view_real_set_cursor (tree_view, path, TRUE, TRUE);
13378
13379   if (focus_column &&
13380       gtk_tree_view_column_get_visible (focus_column))
13381     {
13382       GList *list;
13383       gboolean column_in_tree = FALSE;
13384
13385       for (list = tree_view->priv->columns; list; list = list->next)
13386         if (list->data == focus_column)
13387           {
13388             column_in_tree = TRUE;
13389             break;
13390           }
13391       g_return_if_fail (column_in_tree);
13392       tree_view->priv->focus_column = focus_column;
13393       if (focus_cell)
13394         gtk_tree_view_column_focus_cell (focus_column, focus_cell);
13395       if (start_editing)
13396         gtk_tree_view_start_editing (tree_view, path, TRUE);
13397     }
13398 }
13399
13400 /**
13401  * gtk_tree_view_get_bin_window:
13402  * @tree_view: A #GtkTreeView
13403  *
13404  * Returns the window that @tree_view renders to.
13405  * This is used primarily to compare to <literal>event->window</literal>
13406  * to confirm that the event on @tree_view is on the right window.
13407  *
13408  * Return value: (transfer none): A #GdkWindow, or %NULL when @tree_view
13409  *     hasn't been realized yet
13410  **/
13411 GdkWindow *
13412 gtk_tree_view_get_bin_window (GtkTreeView *tree_view)
13413 {
13414   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), NULL);
13415
13416   return tree_view->priv->bin_window;
13417 }
13418
13419 /**
13420  * gtk_tree_view_get_path_at_pos:
13421  * @tree_view: A #GtkTreeView.
13422  * @x: The x position to be identified (relative to bin_window).
13423  * @y: The y position to be identified (relative to bin_window).
13424  * @path: (out) (allow-none): A pointer to a #GtkTreePath pointer to be filled in, or %NULL
13425  * @column: (out) (transfer none) (allow-none): A pointer to a #GtkTreeViewColumn pointer to be filled in, or %NULL
13426  * @cell_x: (out) (allow-none): A pointer where the X coordinate relative to the cell can be placed, or %NULL
13427  * @cell_y: (out) (allow-none): A pointer where the Y coordinate relative to the cell can be placed, or %NULL
13428  *
13429  * Finds the path at the point (@x, @y), relative to bin_window coordinates
13430  * (please see gtk_tree_view_get_bin_window()).
13431  * That is, @x and @y are relative to an events coordinates. @x and @y must
13432  * come from an event on the @tree_view only where <literal>event->window ==
13433  * gtk_tree_view_get_bin_window (<!-- -->)</literal>. It is primarily for
13434  * things like popup menus. If @path is non-%NULL, then it will be filled
13435  * with the #GtkTreePath at that point.  This path should be freed with
13436  * gtk_tree_path_free().  If @column is non-%NULL, then it will be filled
13437  * with the column at that point.  @cell_x and @cell_y return the coordinates
13438  * relative to the cell background (i.e. the @background_area passed to
13439  * gtk_cell_renderer_render()).  This function is only meaningful if
13440  * @tree_view is realized.  Therefore this function will always return %FALSE
13441  * if @tree_view is not realized or does not have a model.
13442  *
13443  * For converting widget coordinates (eg. the ones you get from
13444  * GtkWidget::query-tooltip), please see
13445  * gtk_tree_view_convert_widget_to_bin_window_coords().
13446  *
13447  * Return value: %TRUE if a row exists at that coordinate.
13448  **/
13449 gboolean
13450 gtk_tree_view_get_path_at_pos (GtkTreeView        *tree_view,
13451                                gint                x,
13452                                gint                y,
13453                                GtkTreePath       **path,
13454                                GtkTreeViewColumn **column,
13455                                gint               *cell_x,
13456                                gint               *cell_y)
13457 {
13458   GtkRBTree *tree;
13459   GtkRBNode *node;
13460   gint y_offset;
13461
13462   g_return_val_if_fail (tree_view != NULL, FALSE);
13463
13464   if (path)
13465     *path = NULL;
13466   if (column)
13467     *column = NULL;
13468
13469   if (tree_view->priv->bin_window == NULL)
13470     return FALSE;
13471
13472   if (tree_view->priv->tree == NULL)
13473     return FALSE;
13474
13475   if (x > gtk_adjustment_get_upper (tree_view->priv->hadjustment))
13476     return FALSE;
13477
13478   if (x < 0 || y < 0)
13479     return FALSE;
13480
13481   if (column || cell_x)
13482     {
13483       GtkTreeViewColumn *tmp_column;
13484       GtkTreeViewColumn *last_column = NULL;
13485       GList *list;
13486       gint remaining_x = x;
13487       gboolean found = FALSE;
13488       gboolean rtl;
13489       gint width;
13490
13491       rtl = (gtk_widget_get_direction (GTK_WIDGET (tree_view)) == GTK_TEXT_DIR_RTL);
13492       for (list = (rtl ? g_list_last (tree_view->priv->columns) : g_list_first (tree_view->priv->columns));
13493            list;
13494            list = (rtl ? list->prev : list->next))
13495         {
13496           tmp_column = list->data;
13497
13498           if (gtk_tree_view_column_get_visible (tmp_column) == FALSE)
13499             continue;
13500
13501           last_column = tmp_column;
13502           width = gtk_tree_view_column_get_width (tmp_column);
13503           if (remaining_x <= width)
13504             {
13505               found = TRUE;
13506
13507               if (column)
13508                 *column = tmp_column;
13509
13510               if (cell_x)
13511                 *cell_x = remaining_x;
13512
13513               break;
13514             }
13515           remaining_x -= width;
13516         }
13517
13518       /* If found is FALSE and there is a last_column, then it the remainder
13519        * space is in that area
13520        */
13521       if (!found)
13522         {
13523           if (last_column)
13524             {
13525               if (column)
13526                 *column = last_column;
13527
13528               if (cell_x)
13529                 *cell_x = gtk_tree_view_column_get_width (last_column) + remaining_x;
13530             }
13531           else
13532             {
13533               return FALSE;
13534             }
13535         }
13536     }
13537
13538   y_offset = _gtk_rbtree_find_offset (tree_view->priv->tree,
13539                                       TREE_WINDOW_Y_TO_RBTREE_Y (tree_view, y),
13540                                       &tree, &node);
13541
13542   if (tree == NULL)
13543     return FALSE;
13544
13545   if (cell_y)
13546     *cell_y = y_offset;
13547
13548   if (path)
13549     *path = _gtk_tree_view_find_path (tree_view, tree, node);
13550
13551   return TRUE;
13552 }
13553
13554
13555 static inline gint
13556 gtk_tree_view_get_cell_area_height (GtkTreeView *tree_view,
13557                                     GtkRBNode   *node,
13558                                     gint         vertical_separator)
13559 {
13560   int height;
13561
13562   /* The "cell" areas are the cell_area passed in to gtk_cell_renderer_render(),
13563    * i.e. just the cells, no spacing.
13564    *
13565    * The cell area height is at least expander_size - vertical_separator.
13566    * For regular nodes, the height is then at least expander_size. We should
13567    * be able to enforce the expander_size minimum here, because this
13568    * function will not be called for irregular (e.g. separator) rows.
13569    */
13570   height = gtk_tree_view_get_row_height (tree_view, node);
13571   if (height < tree_view->priv->expander_size)
13572     height = tree_view->priv->expander_size;
13573
13574   return height - vertical_separator;
13575 }
13576
13577 static inline gint
13578 gtk_tree_view_get_cell_area_y_offset (GtkTreeView *tree_view,
13579                                       GtkRBTree   *tree,
13580                                       GtkRBNode   *node,
13581                                       gint         vertical_separator)
13582 {
13583   int offset;
13584
13585   offset = gtk_tree_view_get_row_y_offset (tree_view, tree, node);
13586   offset += vertical_separator / 2;
13587
13588   return offset;
13589 }
13590
13591 /**
13592  * gtk_tree_view_get_cell_area:
13593  * @tree_view: a #GtkTreeView
13594  * @path: (allow-none): a #GtkTreePath for the row, or %NULL to get only horizontal coordinates
13595  * @column: (allow-none): a #GtkTreeViewColumn for the column, or %NULL to get only vertical coordinates
13596  * @rect: (out): rectangle to fill with cell rect
13597  *
13598  * Fills the bounding rectangle in bin_window coordinates for the cell at the
13599  * row specified by @path and the column specified by @column.  If @path is
13600  * %NULL, or points to a path not currently displayed, the @y and @height fields
13601  * of the rectangle will be filled with 0. If @column is %NULL, the @x and @width
13602  * fields will be filled with 0.  The sum of all cell rects does not cover the
13603  * entire tree; there are extra pixels in between rows, for example. The
13604  * returned rectangle is equivalent to the @cell_area passed to
13605  * gtk_cell_renderer_render().  This function is only valid if @tree_view is
13606  * realized.
13607  **/
13608 void
13609 gtk_tree_view_get_cell_area (GtkTreeView        *tree_view,
13610                              GtkTreePath        *path,
13611                              GtkTreeViewColumn  *column,
13612                              GdkRectangle       *rect)
13613 {
13614   GtkRBTree *tree = NULL;
13615   GtkRBNode *node = NULL;
13616   gint vertical_separator;
13617   gint horizontal_separator;
13618
13619   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
13620   g_return_if_fail (column == NULL || GTK_IS_TREE_VIEW_COLUMN (column));
13621   g_return_if_fail (rect != NULL);
13622   g_return_if_fail (!column || gtk_tree_view_column_get_tree_view (column) == (GtkWidget *) tree_view);
13623   g_return_if_fail (gtk_widget_get_realized (GTK_WIDGET (tree_view)));
13624
13625   gtk_widget_style_get (GTK_WIDGET (tree_view),
13626                         "vertical-separator", &vertical_separator,
13627                         "horizontal-separator", &horizontal_separator,
13628                         NULL);
13629
13630   rect->x = 0;
13631   rect->y = 0;
13632   rect->width = 0;
13633   rect->height = 0;
13634
13635   if (column)
13636     {
13637       rect->x = gtk_tree_view_column_get_x_offset (column) + horizontal_separator/2;
13638       rect->width = gtk_tree_view_column_get_width (column) - horizontal_separator;
13639     }
13640
13641   if (path)
13642     {
13643       gboolean ret = _gtk_tree_view_find_node (tree_view, path, &tree, &node);
13644
13645       /* Get vertical coords */
13646       if ((!ret && tree == NULL) || ret)
13647         return;
13648
13649       if (row_is_separator (tree_view, NULL, path))
13650         {
13651           /* There isn't really a "cell area" for separator, so we
13652            * return the y, height values for background area instead.
13653            */
13654           rect->y = gtk_tree_view_get_row_y_offset (tree_view, tree, node);
13655           rect->height = gtk_tree_view_get_row_height (tree_view, node);
13656         }
13657       else
13658         {
13659           rect->y = gtk_tree_view_get_cell_area_y_offset (tree_view, tree, node,
13660                                                           vertical_separator);
13661           rect->height = gtk_tree_view_get_cell_area_height (tree_view, node,
13662                                                              vertical_separator);
13663         }
13664
13665       if (column &&
13666           gtk_tree_view_is_expander_column (tree_view, column))
13667         {
13668           gint depth = gtk_tree_path_get_depth (path);
13669           gboolean rtl;
13670
13671           rtl = gtk_widget_get_direction (GTK_WIDGET (tree_view)) == GTK_TEXT_DIR_RTL;
13672
13673           if (!rtl)
13674             rect->x += (depth - 1) * tree_view->priv->level_indentation;
13675           rect->width -= (depth - 1) * tree_view->priv->level_indentation;
13676
13677           if (gtk_tree_view_draw_expanders (tree_view))
13678             {
13679               if (!rtl)
13680                 rect->x += depth * tree_view->priv->expander_size;
13681               rect->width -= depth * tree_view->priv->expander_size;
13682             }
13683
13684           rect->width = MAX (rect->width, 0);
13685         }
13686     }
13687 }
13688
13689 static inline gint
13690 gtk_tree_view_get_row_height (GtkTreeView *tree_view,
13691                               GtkRBNode   *node)
13692 {
13693   int height;
13694
13695   /* The "background" areas of all rows/cells add up to cover the entire tree.
13696    * The background includes all inter-row and inter-cell spacing.
13697    *
13698    * If the row pointed at by node does not have a height set, we default
13699    * to expander_size, which is the minimum height for regular nodes.
13700    * Non-regular nodes (e.g. separators) can have a height set smaller
13701    * than expander_size and should not be overruled here.
13702    */
13703   height = GTK_RBNODE_GET_HEIGHT (node);
13704   if (height <= 0)
13705     height = tree_view->priv->expander_size;
13706
13707   return height;
13708 }
13709
13710 static inline gint
13711 gtk_tree_view_get_row_y_offset (GtkTreeView *tree_view,
13712                                 GtkRBTree   *tree,
13713                                 GtkRBNode   *node)
13714 {
13715   int offset;
13716
13717   offset = _gtk_rbtree_node_find_offset (tree, node);
13718
13719   return RBTREE_Y_TO_TREE_WINDOW_Y (tree_view, offset);
13720 }
13721
13722 /**
13723  * gtk_tree_view_get_background_area:
13724  * @tree_view: a #GtkTreeView
13725  * @path: (allow-none): a #GtkTreePath for the row, or %NULL to get only horizontal coordinates
13726  * @column: (allow-none): a #GtkTreeViewColumn for the column, or %NULL to get only vertical coordiantes
13727  * @rect: (out): rectangle to fill with cell background rect
13728  *
13729  * Fills the bounding rectangle in bin_window coordinates for the cell at the
13730  * row specified by @path and the column specified by @column.  If @path is
13731  * %NULL, or points to a node not found in the tree, the @y and @height fields of
13732  * the rectangle will be filled with 0. If @column is %NULL, the @x and @width
13733  * fields will be filled with 0.  The returned rectangle is equivalent to the
13734  * @background_area passed to gtk_cell_renderer_render().  These background
13735  * areas tile to cover the entire bin window.  Contrast with the @cell_area,
13736  * returned by gtk_tree_view_get_cell_area(), which returns only the cell
13737  * itself, excluding surrounding borders and the tree expander area.
13738  *
13739  **/
13740 void
13741 gtk_tree_view_get_background_area (GtkTreeView        *tree_view,
13742                                    GtkTreePath        *path,
13743                                    GtkTreeViewColumn  *column,
13744                                    GdkRectangle       *rect)
13745 {
13746   GtkRBTree *tree = NULL;
13747   GtkRBNode *node = NULL;
13748
13749   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
13750   g_return_if_fail (column == NULL || GTK_IS_TREE_VIEW_COLUMN (column));
13751   g_return_if_fail (rect != NULL);
13752
13753   rect->x = 0;
13754   rect->y = 0;
13755   rect->width = 0;
13756   rect->height = 0;
13757
13758   if (path)
13759     {
13760       /* Get vertical coords */
13761
13762       if (!_gtk_tree_view_find_node (tree_view, path, &tree, &node) &&
13763           tree == NULL)
13764         return;
13765
13766       rect->y = gtk_tree_view_get_row_y_offset (tree_view, tree, node);
13767       rect->height = gtk_tree_view_get_row_height (tree_view, node);
13768     }
13769
13770   if (column)
13771     {
13772       gint x2 = 0;
13773
13774       gtk_tree_view_get_background_xrange (tree_view, tree, column, &rect->x, &x2);
13775       rect->width = x2 - rect->x;
13776     }
13777 }
13778
13779 /**
13780  * gtk_tree_view_get_visible_rect:
13781  * @tree_view: a #GtkTreeView
13782  * @visible_rect: (out): rectangle to fill
13783  *
13784  * Fills @visible_rect with the currently-visible region of the
13785  * buffer, in tree coordinates. Convert to bin_window coordinates with
13786  * gtk_tree_view_convert_tree_to_bin_window_coords().
13787  * Tree coordinates start at 0,0 for row 0 of the tree, and cover the entire
13788  * scrollable area of the tree.
13789  **/
13790 void
13791 gtk_tree_view_get_visible_rect (GtkTreeView  *tree_view,
13792                                 GdkRectangle *visible_rect)
13793 {
13794   GtkAllocation allocation;
13795   GtkWidget *widget;
13796
13797   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
13798
13799   widget = GTK_WIDGET (tree_view);
13800
13801   if (visible_rect)
13802     {
13803       gtk_widget_get_allocation (widget, &allocation);
13804       visible_rect->x = gtk_adjustment_get_value (tree_view->priv->hadjustment);
13805       visible_rect->y = gtk_adjustment_get_value (tree_view->priv->vadjustment);
13806       visible_rect->width = allocation.width;
13807       visible_rect->height = allocation.height - gtk_tree_view_get_effective_header_height (tree_view);
13808     }
13809 }
13810
13811 /**
13812  * gtk_tree_view_convert_widget_to_tree_coords:
13813  * @tree_view: a #GtkTreeView
13814  * @wx: X coordinate relative to the widget
13815  * @wy: Y coordinate relative to the widget
13816  * @tx: (out): return location for tree X coordinate
13817  * @ty: (out): return location for tree Y coordinate
13818  *
13819  * Converts widget coordinates to coordinates for the
13820  * tree (the full scrollable area of the tree).
13821  *
13822  * Since: 2.12
13823  **/
13824 void
13825 gtk_tree_view_convert_widget_to_tree_coords (GtkTreeView *tree_view,
13826                                              gint         wx,
13827                                              gint         wy,
13828                                              gint        *tx,
13829                                              gint        *ty)
13830 {
13831   gint x, y;
13832
13833   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
13834
13835   gtk_tree_view_convert_widget_to_bin_window_coords (tree_view,
13836                                                      wx, wy,
13837                                                      &x, &y);
13838   gtk_tree_view_convert_bin_window_to_tree_coords (tree_view,
13839                                                    x, y,
13840                                                    tx, ty);
13841 }
13842
13843 /**
13844  * gtk_tree_view_convert_tree_to_widget_coords:
13845  * @tree_view: a #GtkTreeView
13846  * @tx: X coordinate relative to the tree
13847  * @ty: Y coordinate relative to the tree
13848  * @wx: (out): return location for widget X coordinate
13849  * @wy: (out): return location for widget Y coordinate
13850  *
13851  * Converts tree coordinates (coordinates in full scrollable area of the tree)
13852  * to widget coordinates.
13853  *
13854  * Since: 2.12
13855  **/
13856 void
13857 gtk_tree_view_convert_tree_to_widget_coords (GtkTreeView *tree_view,
13858                                              gint         tx,
13859                                              gint         ty,
13860                                              gint        *wx,
13861                                              gint        *wy)
13862 {
13863   gint x, y;
13864
13865   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
13866
13867   gtk_tree_view_convert_tree_to_bin_window_coords (tree_view,
13868                                                    tx, ty,
13869                                                    &x, &y);
13870   gtk_tree_view_convert_bin_window_to_widget_coords (tree_view,
13871                                                      x, y,
13872                                                      wx, wy);
13873 }
13874
13875 /**
13876  * gtk_tree_view_convert_widget_to_bin_window_coords:
13877  * @tree_view: a #GtkTreeView
13878  * @wx: X coordinate relative to the widget
13879  * @wy: Y coordinate relative to the widget
13880  * @bx: (out): return location for bin_window X coordinate
13881  * @by: (out): return location for bin_window Y coordinate
13882  *
13883  * Converts widget coordinates to coordinates for the bin_window
13884  * (see gtk_tree_view_get_bin_window()).
13885  *
13886  * Since: 2.12
13887  **/
13888 void
13889 gtk_tree_view_convert_widget_to_bin_window_coords (GtkTreeView *tree_view,
13890                                                    gint         wx,
13891                                                    gint         wy,
13892                                                    gint        *bx,
13893                                                    gint        *by)
13894 {
13895   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
13896
13897   if (bx)
13898     *bx = wx + gtk_adjustment_get_value (tree_view->priv->hadjustment);
13899   if (by)
13900     *by = wy - gtk_tree_view_get_effective_header_height (tree_view);
13901 }
13902
13903 /**
13904  * gtk_tree_view_convert_bin_window_to_widget_coords:
13905  * @tree_view: a #GtkTreeView
13906  * @bx: bin_window X coordinate
13907  * @by: bin_window Y coordinate
13908  * @wx: (out): return location for widget X coordinate
13909  * @wy: (out): return location for widget Y coordinate
13910  *
13911  * Converts bin_window coordinates (see gtk_tree_view_get_bin_window())
13912  * to widget relative coordinates.
13913  *
13914  * Since: 2.12
13915  **/
13916 void
13917 gtk_tree_view_convert_bin_window_to_widget_coords (GtkTreeView *tree_view,
13918                                                    gint         bx,
13919                                                    gint         by,
13920                                                    gint        *wx,
13921                                                    gint        *wy)
13922 {
13923   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
13924
13925   if (wx)
13926     *wx = bx - gtk_adjustment_get_value (tree_view->priv->hadjustment);
13927   if (wy)
13928     *wy = by + gtk_tree_view_get_effective_header_height (tree_view);
13929 }
13930
13931 /**
13932  * gtk_tree_view_convert_tree_to_bin_window_coords:
13933  * @tree_view: a #GtkTreeView
13934  * @tx: tree X coordinate
13935  * @ty: tree Y coordinate
13936  * @bx: (out): return location for X coordinate relative to bin_window
13937  * @by: (out): return location for Y coordinate relative to bin_window
13938  *
13939  * Converts tree coordinates (coordinates in full scrollable area of the tree)
13940  * to bin_window coordinates.
13941  *
13942  * Since: 2.12
13943  **/
13944 void
13945 gtk_tree_view_convert_tree_to_bin_window_coords (GtkTreeView *tree_view,
13946                                                  gint         tx,
13947                                                  gint         ty,
13948                                                  gint        *bx,
13949                                                  gint        *by)
13950 {
13951   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
13952
13953   if (bx)
13954     *bx = tx;
13955   if (by)
13956     *by = ty - tree_view->priv->dy;
13957 }
13958
13959 /**
13960  * gtk_tree_view_convert_bin_window_to_tree_coords:
13961  * @tree_view: a #GtkTreeView
13962  * @bx: X coordinate relative to bin_window
13963  * @by: Y coordinate relative to bin_window
13964  * @tx: (out): return location for tree X coordinate
13965  * @ty: (out): return location for tree Y coordinate
13966  *
13967  * Converts bin_window coordinates to coordinates for the
13968  * tree (the full scrollable area of the tree).
13969  *
13970  * Since: 2.12
13971  **/
13972 void
13973 gtk_tree_view_convert_bin_window_to_tree_coords (GtkTreeView *tree_view,
13974                                                  gint         bx,
13975                                                  gint         by,
13976                                                  gint        *tx,
13977                                                  gint        *ty)
13978 {
13979   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
13980
13981   if (tx)
13982     *tx = bx;
13983   if (ty)
13984     *ty = by + tree_view->priv->dy;
13985 }
13986
13987
13988
13989 /**
13990  * gtk_tree_view_get_visible_range:
13991  * @tree_view: A #GtkTreeView
13992  * @start_path: (out) (allow-none): Return location for start of region,
13993  *              or %NULL.
13994  * @end_path: (out) (allow-none): Return location for end of region, or %NULL.
13995  *
13996  * Sets @start_path and @end_path to be the first and last visible path.
13997  * Note that there may be invisible paths in between.
13998  *
13999  * The paths should be freed with gtk_tree_path_free() after use.
14000  *
14001  * Returns: %TRUE, if valid paths were placed in @start_path and @end_path.
14002  *
14003  * Since: 2.8
14004  **/
14005 gboolean
14006 gtk_tree_view_get_visible_range (GtkTreeView  *tree_view,
14007                                  GtkTreePath **start_path,
14008                                  GtkTreePath **end_path)
14009 {
14010   GtkRBTree *tree;
14011   GtkRBNode *node;
14012   gboolean retval;
14013
14014   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), FALSE);
14015
14016   if (!tree_view->priv->tree)
14017     return FALSE;
14018
14019   retval = TRUE;
14020
14021   if (start_path)
14022     {
14023       _gtk_rbtree_find_offset (tree_view->priv->tree,
14024                                TREE_WINDOW_Y_TO_RBTREE_Y (tree_view, 0),
14025                                &tree, &node);
14026       if (node)
14027         *start_path = _gtk_tree_view_find_path (tree_view, tree, node);
14028       else
14029         retval = FALSE;
14030     }
14031
14032   if (end_path)
14033     {
14034       gint y;
14035
14036       if (tree_view->priv->height < gtk_adjustment_get_page_size (tree_view->priv->vadjustment))
14037         y = tree_view->priv->height - 1;
14038       else
14039         y = TREE_WINDOW_Y_TO_RBTREE_Y (tree_view, gtk_adjustment_get_page_size (tree_view->priv->vadjustment)) - 1;
14040
14041       _gtk_rbtree_find_offset (tree_view->priv->tree, y, &tree, &node);
14042       if (node)
14043         *end_path = _gtk_tree_view_find_path (tree_view, tree, node);
14044       else
14045         retval = FALSE;
14046     }
14047
14048   return retval;
14049 }
14050
14051 /**
14052  * gtk_tree_view_is_blank_at_pos:
14053  * @tree_view: A #GtkTreeView
14054  * @x: The x position to be identified (relative to bin_window)
14055  * @y: The y position to be identified (relative to bin_window)
14056  * @path: (out) (allow-none): A pointer to a #GtkTreePath pointer to be filled in, or %NULL
14057  * @column: (out) (allow-none): A pointer to a #GtkTreeViewColumn pointer to be filled in, or %NULL
14058  * @cell_x: (out) (allow-none): A pointer where the X coordinate relative to the cell can be placed, or %NULL
14059  * @cell_y: (out) (allow-none): A pointer where the Y coordinate relative to the cell can be placed, or %NULL
14060  *
14061  * Determine whether the point (@x, @y) in @tree_view is blank, that is no
14062  * cell content nor an expander arrow is drawn at the location. If so, the
14063  * location can be considered as the background. You might wish to take
14064  * special action on clicks on the background, such as clearing a current
14065  * selection, having a custom context menu or starting rubber banding.
14066  *
14067  * The @x and @y coordinate that are provided must be relative to bin_window
14068  * coordinates.  That is, @x and @y must come from an event on @tree_view
14069  * where <literal>event->window == gtk_tree_view_get_bin_window (<!-- -->)</literal>.
14070  *
14071  * For converting widget coordinates (eg. the ones you get from
14072  * GtkWidget::query-tooltip), please see
14073  * gtk_tree_view_convert_widget_to_bin_window_coords().
14074  *
14075  * The @path, @column, @cell_x and @cell_y arguments will be filled in
14076  * likewise as for gtk_tree_view_get_path_at_pos().  Please see
14077  * gtk_tree_view_get_path_at_pos() for more information.
14078  *
14079  * Return value: %TRUE if the area at the given coordinates is blank,
14080  * %FALSE otherwise.
14081  *
14082  * Since: 3.0
14083  */
14084 gboolean
14085 gtk_tree_view_is_blank_at_pos (GtkTreeView       *tree_view,
14086                                gint                x,
14087                                gint                y,
14088                                GtkTreePath       **path,
14089                                GtkTreeViewColumn **column,
14090                                gint               *cell_x,
14091                                gint               *cell_y)
14092 {
14093   GtkRBTree *tree;
14094   GtkRBNode *node;
14095   GtkTreeIter iter;
14096   GtkTreePath *real_path;
14097   GtkTreeViewColumn *real_column;
14098   GdkRectangle cell_area, background_area;
14099
14100   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), FALSE);
14101
14102   if (!gtk_tree_view_get_path_at_pos (tree_view, x, y,
14103                                       &real_path, &real_column,
14104                                       cell_x, cell_y))
14105     /* If there's no path here, it is blank */
14106     return TRUE;
14107
14108   if (path)
14109     *path = real_path;
14110
14111   if (column)
14112     *column = real_column;
14113
14114   gtk_tree_model_get_iter (tree_view->priv->model, &iter, real_path);
14115   _gtk_tree_view_find_node (tree_view, real_path, &tree, &node);
14116
14117   /* Check if there's an expander arrow at (x, y) */
14118   if (real_column == tree_view->priv->expander_column
14119       && gtk_tree_view_draw_expanders (tree_view))
14120     {
14121       gboolean over_arrow;
14122
14123       over_arrow = coords_are_over_arrow (tree_view, tree, node, x, y);
14124
14125       if (over_arrow)
14126         {
14127           if (!path)
14128             gtk_tree_path_free (real_path);
14129           return FALSE;
14130         }
14131     }
14132
14133   /* Otherwise, have the column see if there's a cell at (x, y) */
14134   gtk_tree_view_column_cell_set_cell_data (real_column,
14135                                            tree_view->priv->model,
14136                                            &iter,
14137                                            GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_PARENT),
14138                                            node->children ? TRUE : FALSE);
14139
14140   gtk_tree_view_get_background_area (tree_view, real_path, real_column,
14141                                      &background_area);
14142   gtk_tree_view_get_cell_area (tree_view, real_path, real_column,
14143                                &cell_area);
14144
14145   if (!path)
14146     gtk_tree_path_free (real_path);
14147
14148   return _gtk_tree_view_column_is_blank_at_pos (real_column,
14149                                                 &cell_area,
14150                                                 &background_area,
14151                                                 x, y);
14152 }
14153
14154 static void
14155 unset_reorderable (GtkTreeView *tree_view)
14156 {
14157   if (tree_view->priv->reorderable)
14158     {
14159       tree_view->priv->reorderable = FALSE;
14160       g_object_notify (G_OBJECT (tree_view), "reorderable");
14161     }
14162 }
14163
14164 /**
14165  * gtk_tree_view_enable_model_drag_source:
14166  * @tree_view: a #GtkTreeView
14167  * @start_button_mask: Mask of allowed buttons to start drag
14168  * @targets: (array length=n_targets): the table of targets that the drag will support
14169  * @n_targets: the number of items in @targets
14170  * @actions: the bitmask of possible actions for a drag from this
14171  *    widget
14172  *
14173  * Turns @tree_view into a drag source for automatic DND. Calling this
14174  * method sets #GtkTreeView:reorderable to %FALSE.
14175  **/
14176 void
14177 gtk_tree_view_enable_model_drag_source (GtkTreeView              *tree_view,
14178                                         GdkModifierType           start_button_mask,
14179                                         const GtkTargetEntry     *targets,
14180                                         gint                      n_targets,
14181                                         GdkDragAction             actions)
14182 {
14183   TreeViewDragInfo *di;
14184
14185   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
14186
14187   gtk_drag_source_set (GTK_WIDGET (tree_view),
14188                        0,
14189                        targets,
14190                        n_targets,
14191                        actions);
14192
14193   di = ensure_info (tree_view);
14194
14195   di->start_button_mask = start_button_mask;
14196   di->source_actions = actions;
14197   di->source_set = TRUE;
14198
14199   unset_reorderable (tree_view);
14200 }
14201
14202 /**
14203  * gtk_tree_view_enable_model_drag_dest:
14204  * @tree_view: a #GtkTreeView
14205  * @targets: (array length=n_targets): the table of targets that
14206  *           the drag will support
14207  * @n_targets: the number of items in @targets
14208  * @actions: the bitmask of possible actions for a drag from this
14209  *    widget
14210  *
14211  * Turns @tree_view into a drop destination for automatic DND. Calling
14212  * this method sets #GtkTreeView:reorderable to %FALSE.
14213  **/
14214 void
14215 gtk_tree_view_enable_model_drag_dest (GtkTreeView              *tree_view,
14216                                       const GtkTargetEntry     *targets,
14217                                       gint                      n_targets,
14218                                       GdkDragAction             actions)
14219 {
14220   TreeViewDragInfo *di;
14221
14222   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
14223
14224   gtk_drag_dest_set (GTK_WIDGET (tree_view),
14225                      0,
14226                      targets,
14227                      n_targets,
14228                      actions);
14229
14230   di = ensure_info (tree_view);
14231   di->dest_set = TRUE;
14232
14233   unset_reorderable (tree_view);
14234 }
14235
14236 /**
14237  * gtk_tree_view_unset_rows_drag_source:
14238  * @tree_view: a #GtkTreeView
14239  *
14240  * Undoes the effect of
14241  * gtk_tree_view_enable_model_drag_source(). Calling this method sets
14242  * #GtkTreeView:reorderable to %FALSE.
14243  **/
14244 void
14245 gtk_tree_view_unset_rows_drag_source (GtkTreeView *tree_view)
14246 {
14247   TreeViewDragInfo *di;
14248
14249   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
14250
14251   di = get_info (tree_view);
14252
14253   if (di)
14254     {
14255       if (di->source_set)
14256         {
14257           gtk_drag_source_unset (GTK_WIDGET (tree_view));
14258           di->source_set = FALSE;
14259         }
14260
14261       if (!di->dest_set && !di->source_set)
14262         remove_info (tree_view);
14263     }
14264
14265   unset_reorderable (tree_view);
14266 }
14267
14268 /**
14269  * gtk_tree_view_unset_rows_drag_dest:
14270  * @tree_view: a #GtkTreeView
14271  *
14272  * Undoes the effect of
14273  * gtk_tree_view_enable_model_drag_dest(). Calling this method sets
14274  * #GtkTreeView:reorderable to %FALSE.
14275  **/
14276 void
14277 gtk_tree_view_unset_rows_drag_dest (GtkTreeView *tree_view)
14278 {
14279   TreeViewDragInfo *di;
14280
14281   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
14282
14283   di = get_info (tree_view);
14284
14285   if (di)
14286     {
14287       if (di->dest_set)
14288         {
14289           gtk_drag_dest_unset (GTK_WIDGET (tree_view));
14290           di->dest_set = FALSE;
14291         }
14292
14293       if (!di->dest_set && !di->source_set)
14294         remove_info (tree_view);
14295     }
14296
14297   unset_reorderable (tree_view);
14298 }
14299
14300 /**
14301  * gtk_tree_view_set_drag_dest_row:
14302  * @tree_view: a #GtkTreeView
14303  * @path: (allow-none): The path of the row to highlight, or %NULL
14304  * @pos: Specifies whether to drop before, after or into the row
14305  *
14306  * Sets the row that is highlighted for feedback.
14307  * If @path is %NULL, an existing highlight is removed.
14308  */
14309 void
14310 gtk_tree_view_set_drag_dest_row (GtkTreeView            *tree_view,
14311                                  GtkTreePath            *path,
14312                                  GtkTreeViewDropPosition pos)
14313 {
14314   GtkTreePath *current_dest;
14315
14316   /* Note; this function is exported to allow a custom DND
14317    * implementation, so it can't touch TreeViewDragInfo
14318    */
14319
14320   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
14321
14322   current_dest = NULL;
14323
14324   if (tree_view->priv->drag_dest_row)
14325     {
14326       current_dest = gtk_tree_row_reference_get_path (tree_view->priv->drag_dest_row);
14327       gtk_tree_row_reference_free (tree_view->priv->drag_dest_row);
14328     }
14329
14330   /* special case a drop on an empty model */
14331   tree_view->priv->empty_view_drop = 0;
14332
14333   if (pos == GTK_TREE_VIEW_DROP_BEFORE && path
14334       && gtk_tree_path_get_depth (path) == 1
14335       && gtk_tree_path_get_indices (path)[0] == 0)
14336     {
14337       gint n_children;
14338
14339       n_children = gtk_tree_model_iter_n_children (tree_view->priv->model,
14340                                                    NULL);
14341
14342       if (!n_children)
14343         tree_view->priv->empty_view_drop = 1;
14344     }
14345
14346   tree_view->priv->drag_dest_pos = pos;
14347
14348   if (path)
14349     {
14350       tree_view->priv->drag_dest_row =
14351         gtk_tree_row_reference_new_proxy (G_OBJECT (tree_view), tree_view->priv->model, path);
14352       gtk_tree_view_queue_draw_path (tree_view, path, NULL);
14353     }
14354   else
14355     tree_view->priv->drag_dest_row = NULL;
14356
14357   if (current_dest)
14358     {
14359       GtkRBTree *tree, *new_tree;
14360       GtkRBNode *node, *new_node;
14361
14362       _gtk_tree_view_find_node (tree_view, current_dest, &tree, &node);
14363       _gtk_tree_view_queue_draw_node (tree_view, tree, node, NULL);
14364
14365       if (tree && node)
14366         {
14367           _gtk_rbtree_next_full (tree, node, &new_tree, &new_node);
14368           if (new_tree && new_node)
14369             _gtk_tree_view_queue_draw_node (tree_view, new_tree, new_node, NULL);
14370
14371           _gtk_rbtree_prev_full (tree, node, &new_tree, &new_node);
14372           if (new_tree && new_node)
14373             _gtk_tree_view_queue_draw_node (tree_view, new_tree, new_node, NULL);
14374         }
14375       gtk_tree_path_free (current_dest);
14376     }
14377 }
14378
14379 /**
14380  * gtk_tree_view_get_drag_dest_row:
14381  * @tree_view: a #GtkTreeView
14382  * @path: (out) (allow-none): Return location for the path of the highlighted row, or %NULL.
14383  * @pos: (out) (allow-none): Return location for the drop position, or %NULL
14384  *
14385  * Gets information about the row that is highlighted for feedback.
14386  **/
14387 void
14388 gtk_tree_view_get_drag_dest_row (GtkTreeView              *tree_view,
14389                                  GtkTreePath             **path,
14390                                  GtkTreeViewDropPosition  *pos)
14391 {
14392   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
14393
14394   if (path)
14395     {
14396       if (tree_view->priv->drag_dest_row)
14397         *path = gtk_tree_row_reference_get_path (tree_view->priv->drag_dest_row);
14398       else
14399         {
14400           if (tree_view->priv->empty_view_drop)
14401             *path = gtk_tree_path_new_from_indices (0, -1);
14402           else
14403             *path = NULL;
14404         }
14405     }
14406
14407   if (pos)
14408     *pos = tree_view->priv->drag_dest_pos;
14409 }
14410
14411 /**
14412  * gtk_tree_view_get_dest_row_at_pos:
14413  * @tree_view: a #GtkTreeView
14414  * @drag_x: the position to determine the destination row for
14415  * @drag_y: the position to determine the destination row for
14416  * @path: (out) (allow-none): Return location for the path of the highlighted row, or %NULL.
14417  * @pos: (out) (allow-none): Return location for the drop position, or %NULL
14418  *
14419  * Determines the destination row for a given position.  @drag_x and
14420  * @drag_y are expected to be in widget coordinates.  This function is only
14421  * meaningful if @tree_view is realized.  Therefore this function will always
14422  * return %FALSE if @tree_view is not realized or does not have a model.
14423  *
14424  * Return value: whether there is a row at the given position, %TRUE if this
14425  * is indeed the case.
14426  **/
14427 gboolean
14428 gtk_tree_view_get_dest_row_at_pos (GtkTreeView             *tree_view,
14429                                    gint                     drag_x,
14430                                    gint                     drag_y,
14431                                    GtkTreePath            **path,
14432                                    GtkTreeViewDropPosition *pos)
14433 {
14434   gint cell_y;
14435   gint bin_x, bin_y;
14436   gdouble offset_into_row;
14437   gdouble third;
14438   GdkRectangle cell;
14439   GtkTreeViewColumn *column = NULL;
14440   GtkTreePath *tmp_path = NULL;
14441
14442   /* Note; this function is exported to allow a custom DND
14443    * implementation, so it can't touch TreeViewDragInfo
14444    */
14445
14446   g_return_val_if_fail (tree_view != NULL, FALSE);
14447   g_return_val_if_fail (drag_x >= 0, FALSE);
14448   g_return_val_if_fail (drag_y >= 0, FALSE);
14449
14450   if (path)
14451     *path = NULL;
14452
14453   if (tree_view->priv->bin_window == NULL)
14454     return FALSE;
14455
14456   if (tree_view->priv->tree == NULL)
14457     return FALSE;
14458
14459   /* If in the top third of a row, we drop before that row; if
14460    * in the bottom third, drop after that row; if in the middle,
14461    * and the row has children, drop into the row.
14462    */
14463   gtk_tree_view_convert_widget_to_bin_window_coords (tree_view, drag_x, drag_y,
14464                                                      &bin_x, &bin_y);
14465
14466   if (!gtk_tree_view_get_path_at_pos (tree_view,
14467                                       bin_x,
14468                                       bin_y,
14469                                       &tmp_path,
14470                                       &column,
14471                                       NULL,
14472                                       &cell_y))
14473     return FALSE;
14474
14475   gtk_tree_view_get_background_area (tree_view, tmp_path, column,
14476                                      &cell);
14477
14478   offset_into_row = cell_y;
14479
14480   if (path)
14481     *path = tmp_path;
14482   else
14483     gtk_tree_path_free (tmp_path);
14484
14485   tmp_path = NULL;
14486
14487   third = cell.height / 3.0;
14488
14489   if (pos)
14490     {
14491       if (offset_into_row < third)
14492         {
14493           *pos = GTK_TREE_VIEW_DROP_BEFORE;
14494         }
14495       else if (offset_into_row < (cell.height / 2.0))
14496         {
14497           *pos = GTK_TREE_VIEW_DROP_INTO_OR_BEFORE;
14498         }
14499       else if (offset_into_row < third * 2.0)
14500         {
14501           *pos = GTK_TREE_VIEW_DROP_INTO_OR_AFTER;
14502         }
14503       else
14504         {
14505           *pos = GTK_TREE_VIEW_DROP_AFTER;
14506         }
14507     }
14508
14509   return TRUE;
14510 }
14511
14512
14513
14514 /* KEEP IN SYNC WITH GTK_TREE_VIEW_BIN_EXPOSE */
14515 /**
14516  * gtk_tree_view_create_row_drag_icon:
14517  * @tree_view: a #GtkTreeView
14518  * @path: a #GtkTreePath in @tree_view
14519  *
14520  * Creates a #cairo_surface_t representation of the row at @path.
14521  * This image is used for a drag icon.
14522  *
14523  * Return value: (transfer full): a newly-allocated surface of the drag icon.
14524  **/
14525 cairo_surface_t *
14526 gtk_tree_view_create_row_drag_icon (GtkTreeView  *tree_view,
14527                                     GtkTreePath  *path)
14528 {
14529   GtkTreeIter   iter;
14530   GtkRBTree    *tree;
14531   GtkRBNode    *node;
14532   GtkStyleContext *context;
14533   GtkStateFlags state;
14534   gint cell_offset;
14535   GList *list;
14536   GdkRectangle background_area;
14537   GtkWidget *widget;
14538   gint depth;
14539   /* start drawing inside the black outline */
14540   gint x = 1, y = 1;
14541   cairo_surface_t *surface;
14542   gint bin_window_width;
14543   gboolean is_separator = FALSE;
14544   gboolean rtl, allow_rules;
14545   cairo_t *cr;
14546
14547   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), NULL);
14548   g_return_val_if_fail (path != NULL, NULL);
14549
14550   widget = GTK_WIDGET (tree_view);
14551
14552   if (!gtk_widget_get_realized (widget))
14553     return NULL;
14554
14555   depth = gtk_tree_path_get_depth (path);
14556
14557   _gtk_tree_view_find_node (tree_view,
14558                             path,
14559                             &tree,
14560                             &node);
14561
14562   if (tree == NULL)
14563     return NULL;
14564
14565   if (!gtk_tree_model_get_iter (tree_view->priv->model,
14566                                 &iter,
14567                                 path))
14568     return NULL;
14569
14570   context = gtk_widget_get_style_context (widget);
14571
14572   gtk_style_context_save (context);
14573
14574   state = gtk_widget_get_state_flags (widget);
14575   gtk_style_context_set_state (context, state);
14576
14577   gtk_style_context_add_class (context, GTK_STYLE_CLASS_VIEW);
14578   gtk_style_context_add_region (context, GTK_STYLE_REGION_COLUMN, 0);
14579
14580   gtk_widget_style_get (widget,
14581                         "allow-rules", &allow_rules,
14582                         NULL);
14583
14584   if (allow_rules && tree_view->priv->has_rules)
14585     {
14586       GtkRegionFlags row_flags;
14587
14588       if ((_gtk_rbtree_node_get_index (tree, node) % 2))
14589         row_flags = GTK_REGION_ODD;
14590       else
14591         row_flags = GTK_REGION_EVEN;
14592
14593       gtk_style_context_add_region (context, GTK_STYLE_REGION_ROW, row_flags);
14594     }
14595
14596   is_separator = row_is_separator (tree_view, &iter, NULL);
14597
14598   cell_offset = x;
14599
14600   background_area.y = y;
14601   background_area.height = gtk_tree_view_get_row_height (tree_view, node);
14602
14603   bin_window_width = gdk_window_get_width (tree_view->priv->bin_window);
14604
14605   surface = gdk_window_create_similar_surface (tree_view->priv->bin_window,
14606                                                CAIRO_CONTENT_COLOR,
14607                                                bin_window_width + 2,
14608                                                background_area.height + 2);
14609
14610   cr = cairo_create (surface);
14611
14612   gtk_render_background (context, cr, 0, 0,
14613                          bin_window_width + 2,
14614                          background_area.height + 2);
14615
14616   rtl = gtk_widget_get_direction (GTK_WIDGET (tree_view)) == GTK_TEXT_DIR_RTL;
14617
14618   for (list = (rtl ? g_list_last (tree_view->priv->columns) : g_list_first (tree_view->priv->columns));
14619       list;
14620       list = (rtl ? list->prev : list->next))
14621     {
14622       GtkTreeViewColumn *column = list->data;
14623       GdkRectangle cell_area;
14624       gint vertical_separator;
14625
14626       if (!gtk_tree_view_column_get_visible (column))
14627         continue;
14628
14629       gtk_tree_view_column_cell_set_cell_data (column, tree_view->priv->model, &iter,
14630                                                GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_PARENT),
14631                                                node->children?TRUE:FALSE);
14632
14633       background_area.x = cell_offset;
14634       background_area.width = gtk_tree_view_column_get_width (column);
14635
14636       gtk_widget_style_get (widget,
14637                             "vertical-separator", &vertical_separator,
14638                             NULL);
14639
14640       cell_area = background_area;
14641
14642       cell_area.y += vertical_separator / 2;
14643       cell_area.height -= vertical_separator;
14644
14645       if (gtk_tree_view_is_expander_column (tree_view, column))
14646         {
14647           if (!rtl)
14648             cell_area.x += (depth - 1) * tree_view->priv->level_indentation;
14649           cell_area.width -= (depth - 1) * tree_view->priv->level_indentation;
14650
14651           if (gtk_tree_view_draw_expanders (tree_view))
14652             {
14653               if (!rtl)
14654                 cell_area.x += depth * tree_view->priv->expander_size;
14655               cell_area.width -= depth * tree_view->priv->expander_size;
14656             }
14657         }
14658
14659       if (gtk_tree_view_column_cell_is_visible (column))
14660         {
14661           if (is_separator)
14662             {
14663               gtk_style_context_save (context);
14664               gtk_style_context_add_class (context, GTK_STYLE_CLASS_SEPARATOR);
14665
14666               gtk_render_line (context, cr,
14667                                cell_area.x,
14668                                cell_area.y + cell_area.height / 2,
14669                                cell_area.x + cell_area.width,
14670                                cell_area.y + cell_area.height / 2);
14671
14672               gtk_style_context_restore (context);
14673             }
14674           else
14675             {
14676               _gtk_tree_view_column_cell_render (column,
14677                                                  cr,
14678                                                  &background_area,
14679                                                  &cell_area,
14680                                                  0, FALSE);
14681             }
14682         }
14683       cell_offset += gtk_tree_view_column_get_width (column);
14684     }
14685
14686   cairo_set_source_rgb (cr, 0, 0, 0);
14687   cairo_rectangle (cr,
14688                    0.5, 0.5,
14689                    bin_window_width + 1,
14690                    background_area.height + 1);
14691   cairo_set_line_width (cr, 1.0);
14692   cairo_stroke (cr);
14693
14694   cairo_destroy (cr);
14695
14696   cairo_surface_set_device_offset (surface, 2, 2);
14697
14698   gtk_style_context_restore (context);
14699
14700   return surface;
14701 }
14702
14703
14704 /**
14705  * gtk_tree_view_set_destroy_count_func:
14706  * @tree_view: A #GtkTreeView
14707  * @func: (allow-none): Function to be called when a view row is destroyed, or %NULL
14708  * @data: (allow-none): User data to be passed to @func, or %NULL
14709  * @destroy: (allow-none): Destroy notifier for @data, or %NULL
14710  *
14711  * This function should almost never be used.  It is meant for private use by
14712  * ATK for determining the number of visible children that are removed when the
14713  * user collapses a row, or a row is deleted.
14714  **/
14715 void
14716 gtk_tree_view_set_destroy_count_func (GtkTreeView             *tree_view,
14717                                       GtkTreeDestroyCountFunc  func,
14718                                       gpointer                 data,
14719                                       GDestroyNotify           destroy)
14720 {
14721   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
14722
14723   if (tree_view->priv->destroy_count_destroy)
14724     tree_view->priv->destroy_count_destroy (tree_view->priv->destroy_count_data);
14725
14726   tree_view->priv->destroy_count_func = func;
14727   tree_view->priv->destroy_count_data = data;
14728   tree_view->priv->destroy_count_destroy = destroy;
14729 }
14730
14731
14732 /*
14733  * Interactive search
14734  */
14735
14736 /**
14737  * gtk_tree_view_set_enable_search:
14738  * @tree_view: A #GtkTreeView
14739  * @enable_search: %TRUE, if the user can search interactively
14740  *
14741  * If @enable_search is set, then the user can type in text to search through
14742  * the tree interactively (this is sometimes called "typeahead find").
14743  *
14744  * Note that even if this is %FALSE, the user can still initiate a search
14745  * using the "start-interactive-search" key binding.
14746  */
14747 void
14748 gtk_tree_view_set_enable_search (GtkTreeView *tree_view,
14749                                  gboolean     enable_search)
14750 {
14751   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
14752
14753   enable_search = !!enable_search;
14754
14755   if (tree_view->priv->enable_search != enable_search)
14756     {
14757        tree_view->priv->enable_search = enable_search;
14758        g_object_notify (G_OBJECT (tree_view), "enable-search");
14759     }
14760 }
14761
14762 /**
14763  * gtk_tree_view_get_enable_search:
14764  * @tree_view: A #GtkTreeView
14765  *
14766  * Returns whether or not the tree allows to start interactive searching
14767  * by typing in text.
14768  *
14769  * Return value: whether or not to let the user search interactively
14770  */
14771 gboolean
14772 gtk_tree_view_get_enable_search (GtkTreeView *tree_view)
14773 {
14774   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), FALSE);
14775
14776   return tree_view->priv->enable_search;
14777 }
14778
14779
14780 /**
14781  * gtk_tree_view_get_search_column:
14782  * @tree_view: A #GtkTreeView
14783  *
14784  * Gets the column searched on by the interactive search code.
14785  *
14786  * Return value: the column the interactive search code searches in.
14787  */
14788 gint
14789 gtk_tree_view_get_search_column (GtkTreeView *tree_view)
14790 {
14791   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), -1);
14792
14793   return (tree_view->priv->search_column);
14794 }
14795
14796 /**
14797  * gtk_tree_view_set_search_column:
14798  * @tree_view: A #GtkTreeView
14799  * @column: the column of the model to search in, or -1 to disable searching
14800  *
14801  * Sets @column as the column where the interactive search code should
14802  * search in for the current model.
14803  *
14804  * If the search column is set, users can use the "start-interactive-search"
14805  * key binding to bring up search popup. The enable-search property controls
14806  * whether simply typing text will also start an interactive search.
14807  *
14808  * Note that @column refers to a column of the current model. The search
14809  * column is reset to -1 when the model is changed.
14810  */
14811 void
14812 gtk_tree_view_set_search_column (GtkTreeView *tree_view,
14813                                  gint         column)
14814 {
14815   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
14816   g_return_if_fail (column >= -1);
14817
14818   if (tree_view->priv->search_column == column)
14819     return;
14820
14821   tree_view->priv->search_column = column;
14822   g_object_notify (G_OBJECT (tree_view), "search-column");
14823 }
14824
14825 /**
14826  * gtk_tree_view_get_search_equal_func: (skip)
14827  * @tree_view: A #GtkTreeView
14828  *
14829  * Returns the compare function currently in use.
14830  *
14831  * Return value: the currently used compare function for the search code.
14832  */
14833
14834 GtkTreeViewSearchEqualFunc
14835 gtk_tree_view_get_search_equal_func (GtkTreeView *tree_view)
14836 {
14837   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), NULL);
14838
14839   return tree_view->priv->search_equal_func;
14840 }
14841
14842 /**
14843  * gtk_tree_view_set_search_equal_func:
14844  * @tree_view: A #GtkTreeView
14845  * @search_equal_func: the compare function to use during the search
14846  * @search_user_data: (allow-none): user data to pass to @search_equal_func, or %NULL
14847  * @search_destroy: (allow-none): Destroy notifier for @search_user_data, or %NULL
14848  *
14849  * Sets the compare function for the interactive search capabilities; note
14850  * that somewhat like strcmp() returning 0 for equality
14851  * #GtkTreeViewSearchEqualFunc returns %FALSE on matches.
14852  **/
14853 void
14854 gtk_tree_view_set_search_equal_func (GtkTreeView                *tree_view,
14855                                      GtkTreeViewSearchEqualFunc  search_equal_func,
14856                                      gpointer                    search_user_data,
14857                                      GDestroyNotify              search_destroy)
14858 {
14859   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
14860   g_return_if_fail (search_equal_func != NULL);
14861
14862   if (tree_view->priv->search_destroy)
14863     tree_view->priv->search_destroy (tree_view->priv->search_user_data);
14864
14865   tree_view->priv->search_equal_func = search_equal_func;
14866   tree_view->priv->search_user_data = search_user_data;
14867   tree_view->priv->search_destroy = search_destroy;
14868   if (tree_view->priv->search_equal_func == NULL)
14869     tree_view->priv->search_equal_func = gtk_tree_view_search_equal_func;
14870 }
14871
14872 /**
14873  * gtk_tree_view_get_search_entry:
14874  * @tree_view: A #GtkTreeView
14875  *
14876  * Returns the #GtkEntry which is currently in use as interactive search
14877  * entry for @tree_view.  In case the built-in entry is being used, %NULL
14878  * will be returned.
14879  *
14880  * Return value: (transfer none): the entry currently in use as search entry.
14881  *
14882  * Since: 2.10
14883  */
14884 GtkEntry *
14885 gtk_tree_view_get_search_entry (GtkTreeView *tree_view)
14886 {
14887   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), NULL);
14888
14889   if (tree_view->priv->search_custom_entry_set)
14890     return GTK_ENTRY (tree_view->priv->search_entry);
14891
14892   return NULL;
14893 }
14894
14895 /**
14896  * gtk_tree_view_set_search_entry:
14897  * @tree_view: A #GtkTreeView
14898  * @entry: (allow-none): the entry the interactive search code of @tree_view should use or %NULL
14899  *
14900  * Sets the entry which the interactive search code will use for this
14901  * @tree_view.  This is useful when you want to provide a search entry
14902  * in our interface at all time at a fixed position.  Passing %NULL for
14903  * @entry will make the interactive search code use the built-in popup
14904  * entry again.
14905  *
14906  * Since: 2.10
14907  */
14908 void
14909 gtk_tree_view_set_search_entry (GtkTreeView *tree_view,
14910                                 GtkEntry    *entry)
14911 {
14912   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
14913   g_return_if_fail (entry == NULL || GTK_IS_ENTRY (entry));
14914
14915   if (tree_view->priv->search_custom_entry_set)
14916     {
14917       if (tree_view->priv->search_entry_changed_id)
14918         {
14919           g_signal_handler_disconnect (tree_view->priv->search_entry,
14920                                        tree_view->priv->search_entry_changed_id);
14921           tree_view->priv->search_entry_changed_id = 0;
14922         }
14923       g_signal_handlers_disconnect_by_func (tree_view->priv->search_entry,
14924                                             G_CALLBACK (gtk_tree_view_search_key_press_event),
14925                                             tree_view);
14926
14927       g_object_unref (tree_view->priv->search_entry);
14928     }
14929   else if (tree_view->priv->search_window)
14930     {
14931       gtk_widget_destroy (tree_view->priv->search_window);
14932
14933       tree_view->priv->search_window = NULL;
14934     }
14935
14936   if (entry)
14937     {
14938       tree_view->priv->search_entry = g_object_ref (entry);
14939       tree_view->priv->search_custom_entry_set = TRUE;
14940
14941       if (tree_view->priv->search_entry_changed_id == 0)
14942         {
14943           tree_view->priv->search_entry_changed_id =
14944             g_signal_connect (tree_view->priv->search_entry, "changed",
14945                               G_CALLBACK (gtk_tree_view_search_init),
14946                               tree_view);
14947         }
14948
14949         g_signal_connect (tree_view->priv->search_entry, "key-press-event",
14950                           G_CALLBACK (gtk_tree_view_search_key_press_event),
14951                           tree_view);
14952
14953         gtk_tree_view_search_init (tree_view->priv->search_entry, tree_view);
14954     }
14955   else
14956     {
14957       tree_view->priv->search_entry = NULL;
14958       tree_view->priv->search_custom_entry_set = FALSE;
14959     }
14960 }
14961
14962 /**
14963  * gtk_tree_view_set_search_position_func:
14964  * @tree_view: A #GtkTreeView
14965  * @func: (allow-none): the function to use to position the search dialog, or %NULL
14966  *    to use the default search position function
14967  * @data: (allow-none): user data to pass to @func, or %NULL
14968  * @destroy: (allow-none): Destroy notifier for @data, or %NULL
14969  *
14970  * Sets the function to use when positioning the search dialog.
14971  *
14972  * Since: 2.10
14973  **/
14974 void
14975 gtk_tree_view_set_search_position_func (GtkTreeView                   *tree_view,
14976                                         GtkTreeViewSearchPositionFunc  func,
14977                                         gpointer                       user_data,
14978                                         GDestroyNotify                 destroy)
14979 {
14980   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
14981
14982   if (tree_view->priv->search_position_destroy)
14983     tree_view->priv->search_position_destroy (tree_view->priv->search_position_user_data);
14984
14985   tree_view->priv->search_position_func = func;
14986   tree_view->priv->search_position_user_data = user_data;
14987   tree_view->priv->search_position_destroy = destroy;
14988   if (tree_view->priv->search_position_func == NULL)
14989     tree_view->priv->search_position_func = gtk_tree_view_search_position_func;
14990 }
14991
14992 /**
14993  * gtk_tree_view_get_search_position_func: (skip)
14994  * @tree_view: A #GtkTreeView
14995  *
14996  * Returns the positioning function currently in use.
14997  *
14998  * Return value: the currently used function for positioning the search dialog.
14999  *
15000  * Since: 2.10
15001  */
15002 GtkTreeViewSearchPositionFunc
15003 gtk_tree_view_get_search_position_func (GtkTreeView *tree_view)
15004 {
15005   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), NULL);
15006
15007   return tree_view->priv->search_position_func;
15008 }
15009
15010
15011 static void
15012 gtk_tree_view_search_dialog_hide (GtkWidget   *search_dialog,
15013                                   GtkTreeView *tree_view,
15014                                   GdkDevice   *device)
15015 {
15016   if (tree_view->priv->disable_popdown)
15017     return;
15018
15019   if (tree_view->priv->search_entry_changed_id)
15020     {
15021       g_signal_handler_disconnect (tree_view->priv->search_entry,
15022                                    tree_view->priv->search_entry_changed_id);
15023       tree_view->priv->search_entry_changed_id = 0;
15024     }
15025   if (tree_view->priv->typeselect_flush_timeout)
15026     {
15027       g_source_remove (tree_view->priv->typeselect_flush_timeout);
15028       tree_view->priv->typeselect_flush_timeout = 0;
15029     }
15030
15031   if (gtk_widget_get_visible (search_dialog))
15032     {
15033       /* send focus-in event */
15034       send_focus_change (GTK_WIDGET (tree_view->priv->search_entry), device, FALSE);
15035       gtk_widget_hide (search_dialog);
15036       gtk_entry_set_text (GTK_ENTRY (tree_view->priv->search_entry), "");
15037       send_focus_change (GTK_WIDGET (tree_view), device, TRUE);
15038     }
15039 }
15040
15041 static void
15042 gtk_tree_view_search_position_func (GtkTreeView *tree_view,
15043                                     GtkWidget   *search_dialog,
15044                                     gpointer     user_data)
15045 {
15046   gint x, y;
15047   gint tree_x, tree_y;
15048   gint tree_width, tree_height;
15049   GdkWindow *tree_window = gtk_widget_get_window (GTK_WIDGET (tree_view));
15050   GdkScreen *screen = gdk_window_get_screen (tree_window);
15051   GtkRequisition requisition;
15052   gint monitor_num;
15053   GdkRectangle monitor;
15054
15055   monitor_num = gdk_screen_get_monitor_at_window (screen, tree_window);
15056   gdk_screen_get_monitor_geometry (screen, monitor_num, &monitor);
15057
15058   gtk_widget_realize (search_dialog);
15059
15060   gdk_window_get_origin (tree_window, &tree_x, &tree_y);
15061   tree_width = gdk_window_get_width (tree_window);
15062   tree_height = gdk_window_get_height (tree_window);
15063   gtk_widget_get_preferred_size (search_dialog, &requisition, NULL);
15064
15065   if (tree_x + tree_width > gdk_screen_get_width (screen))
15066     x = gdk_screen_get_width (screen) - requisition.width;
15067   else if (tree_x + tree_width - requisition.width < 0)
15068     x = 0;
15069   else
15070     x = tree_x + tree_width - requisition.width;
15071
15072   if (tree_y + tree_height + requisition.height > gdk_screen_get_height (screen))
15073     y = gdk_screen_get_height (screen) - requisition.height;
15074   else if (tree_y + tree_height < 0) /* isn't really possible ... */
15075     y = 0;
15076   else
15077     y = tree_y + tree_height;
15078
15079   gtk_window_move (GTK_WINDOW (search_dialog), x, y);
15080 }
15081
15082 static void
15083 gtk_tree_view_search_disable_popdown (GtkEntry *entry,
15084                                       GtkMenu  *menu,
15085                                       gpointer  data)
15086 {
15087   GtkTreeView *tree_view = (GtkTreeView *)data;
15088
15089   tree_view->priv->disable_popdown = 1;
15090   g_signal_connect (menu, "hide",
15091                     G_CALLBACK (gtk_tree_view_search_enable_popdown), data);
15092 }
15093
15094 /* Because we're visible but offscreen, we just set a flag in the preedit
15095  * callback.
15096  */
15097 static void
15098 gtk_tree_view_search_preedit_changed (GtkIMContext *im_context,
15099                                       GtkTreeView  *tree_view)
15100 {
15101   tree_view->priv->imcontext_changed = 1;
15102   if (tree_view->priv->typeselect_flush_timeout)
15103     {
15104       g_source_remove (tree_view->priv->typeselect_flush_timeout);
15105       tree_view->priv->typeselect_flush_timeout =
15106         gdk_threads_add_timeout (GTK_TREE_VIEW_SEARCH_DIALOG_TIMEOUT,
15107                        (GSourceFunc) gtk_tree_view_search_entry_flush_timeout,
15108                        tree_view);
15109     }
15110
15111 }
15112
15113 static void
15114 gtk_tree_view_search_activate (GtkEntry    *entry,
15115                                GtkTreeView *tree_view)
15116 {
15117   GtkTreePath *path;
15118   GtkRBNode *node;
15119   GtkRBTree *tree;
15120
15121   gtk_tree_view_search_dialog_hide (tree_view->priv->search_window,
15122                                     tree_view,
15123                                     gtk_get_current_event_device ());
15124
15125   /* If we have a row selected and it's the cursor row, we activate
15126    * the row XXX */
15127   if (gtk_tree_row_reference_valid (tree_view->priv->cursor))
15128     {
15129       path = gtk_tree_row_reference_get_path (tree_view->priv->cursor);
15130
15131       _gtk_tree_view_find_node (tree_view, path, &tree, &node);
15132
15133       if (node && GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_SELECTED))
15134         gtk_tree_view_row_activated (tree_view, path, tree_view->priv->focus_column);
15135
15136       gtk_tree_path_free (path);
15137     }
15138 }
15139
15140 static gboolean
15141 gtk_tree_view_real_search_enable_popdown (gpointer data)
15142 {
15143   GtkTreeView *tree_view = (GtkTreeView *)data;
15144
15145   tree_view->priv->disable_popdown = 0;
15146
15147   return FALSE;
15148 }
15149
15150 static void
15151 gtk_tree_view_search_enable_popdown (GtkWidget *widget,
15152                                      gpointer   data)
15153 {
15154   gdk_threads_add_timeout_full (G_PRIORITY_HIGH, 200, gtk_tree_view_real_search_enable_popdown, g_object_ref (data), g_object_unref);
15155 }
15156
15157 static gboolean
15158 gtk_tree_view_search_delete_event (GtkWidget *widget,
15159                                    GdkEventAny *event,
15160                                    GtkTreeView *tree_view)
15161 {
15162   g_return_val_if_fail (GTK_IS_WIDGET (widget), FALSE);
15163
15164   gtk_tree_view_search_dialog_hide (widget, tree_view, NULL);
15165
15166   return TRUE;
15167 }
15168
15169 static gboolean
15170 gtk_tree_view_search_button_press_event (GtkWidget *widget,
15171                                          GdkEventButton *event,
15172                                          GtkTreeView *tree_view)
15173 {
15174   GdkDevice *keyb_device;
15175
15176   g_return_val_if_fail (GTK_IS_WIDGET (widget), FALSE);
15177
15178   keyb_device = gdk_device_get_associated_device (event->device);
15179   gtk_tree_view_search_dialog_hide (widget, tree_view, keyb_device);
15180
15181   if (event->window == tree_view->priv->bin_window)
15182     gtk_tree_view_button_press (GTK_WIDGET (tree_view), event);
15183
15184   return TRUE;
15185 }
15186
15187 static gboolean
15188 gtk_tree_view_search_scroll_event (GtkWidget *widget,
15189                                    GdkEventScroll *event,
15190                                    GtkTreeView *tree_view)
15191 {
15192   gboolean retval = FALSE;
15193
15194   if (event->direction == GDK_SCROLL_UP)
15195     {
15196       gtk_tree_view_search_move (widget, tree_view, TRUE);
15197       retval = TRUE;
15198     }
15199   else if (event->direction == GDK_SCROLL_DOWN)
15200     {
15201       gtk_tree_view_search_move (widget, tree_view, FALSE);
15202       retval = TRUE;
15203     }
15204
15205   /* renew the flush timeout */
15206   if (retval && tree_view->priv->typeselect_flush_timeout
15207       && !tree_view->priv->search_custom_entry_set)
15208     {
15209       g_source_remove (tree_view->priv->typeselect_flush_timeout);
15210       tree_view->priv->typeselect_flush_timeout =
15211         gdk_threads_add_timeout (GTK_TREE_VIEW_SEARCH_DIALOG_TIMEOUT,
15212                        (GSourceFunc) gtk_tree_view_search_entry_flush_timeout,
15213                        tree_view);
15214     }
15215
15216   return retval;
15217 }
15218
15219 static gboolean
15220 gtk_tree_view_search_key_press_event (GtkWidget *widget,
15221                                       GdkEventKey *event,
15222                                       GtkTreeView *tree_view)
15223 {
15224   GdkModifierType default_accel;
15225   gboolean        retval = FALSE;
15226
15227   g_return_val_if_fail (GTK_IS_WIDGET (widget), FALSE);
15228   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), FALSE);
15229
15230   /* close window and cancel the search */
15231   if (!tree_view->priv->search_custom_entry_set
15232       && (event->keyval == GDK_KEY_Escape ||
15233           event->keyval == GDK_KEY_Tab ||
15234             event->keyval == GDK_KEY_KP_Tab ||
15235             event->keyval == GDK_KEY_ISO_Left_Tab))
15236     {
15237       gtk_tree_view_search_dialog_hide (widget, tree_view,
15238                                         gdk_event_get_device ((GdkEvent *) event));
15239       return TRUE;
15240     }
15241
15242   default_accel = gtk_widget_get_modifier_mask (widget,
15243                                                 GDK_MODIFIER_INTENT_PRIMARY_ACCELERATOR);
15244
15245   /* select previous matching iter */
15246   if (event->keyval == GDK_KEY_Up || event->keyval == GDK_KEY_KP_Up)
15247     {
15248       if (!gtk_tree_view_search_move (widget, tree_view, TRUE))
15249         gtk_widget_error_bell (widget);
15250
15251       retval = TRUE;
15252     }
15253
15254   if (((event->state & (default_accel | GDK_SHIFT_MASK)) == (default_accel | GDK_SHIFT_MASK))
15255       && (event->keyval == GDK_KEY_g || event->keyval == GDK_KEY_G))
15256     {
15257       if (!gtk_tree_view_search_move (widget, tree_view, TRUE))
15258         gtk_widget_error_bell (widget);
15259
15260       retval = TRUE;
15261     }
15262
15263   /* select next matching iter */
15264   if (event->keyval == GDK_KEY_Down || event->keyval == GDK_KEY_KP_Down)
15265     {
15266       if (!gtk_tree_view_search_move (widget, tree_view, FALSE))
15267         gtk_widget_error_bell (widget);
15268
15269       retval = TRUE;
15270     }
15271
15272   if (((event->state & (default_accel | GDK_SHIFT_MASK)) == default_accel)
15273       && (event->keyval == GDK_KEY_g || event->keyval == GDK_KEY_G))
15274     {
15275       if (!gtk_tree_view_search_move (widget, tree_view, FALSE))
15276         gtk_widget_error_bell (widget);
15277
15278       retval = TRUE;
15279     }
15280
15281   /* renew the flush timeout */
15282   if (retval && tree_view->priv->typeselect_flush_timeout
15283       && !tree_view->priv->search_custom_entry_set)
15284     {
15285       g_source_remove (tree_view->priv->typeselect_flush_timeout);
15286       tree_view->priv->typeselect_flush_timeout =
15287         gdk_threads_add_timeout (GTK_TREE_VIEW_SEARCH_DIALOG_TIMEOUT,
15288                        (GSourceFunc) gtk_tree_view_search_entry_flush_timeout,
15289                        tree_view);
15290     }
15291
15292   return retval;
15293 }
15294
15295 /*  this function returns FALSE if there is a search string but
15296  *  nothing was found, and TRUE otherwise.
15297  */
15298 static gboolean
15299 gtk_tree_view_search_move (GtkWidget   *window,
15300                            GtkTreeView *tree_view,
15301                            gboolean     up)
15302 {
15303   gboolean ret;
15304   gint len;
15305   gint count = 0;
15306   const gchar *text;
15307   GtkTreeIter iter;
15308   GtkTreeModel *model;
15309   GtkTreeSelection *selection;
15310
15311   text = gtk_entry_get_text (GTK_ENTRY (tree_view->priv->search_entry));
15312
15313   g_return_val_if_fail (text != NULL, FALSE);
15314
15315   len = strlen (text);
15316
15317   if (up && tree_view->priv->selected_iter == 1)
15318     return strlen (text) < 1;
15319
15320   len = strlen (text);
15321
15322   if (len < 1)
15323     return TRUE;
15324
15325   model = gtk_tree_view_get_model (tree_view);
15326   selection = gtk_tree_view_get_selection (tree_view);
15327
15328   /* search */
15329   gtk_tree_selection_unselect_all (selection);
15330   if (!gtk_tree_model_get_iter_first (model, &iter))
15331     return TRUE;
15332
15333   ret = gtk_tree_view_search_iter (model, selection, &iter, text,
15334                                    &count, up?((tree_view->priv->selected_iter) - 1):((tree_view->priv->selected_iter + 1)));
15335
15336   if (ret)
15337     {
15338       /* found */
15339       tree_view->priv->selected_iter += up?(-1):(1);
15340       return TRUE;
15341     }
15342   else
15343     {
15344       /* return to old iter */
15345       count = 0;
15346       gtk_tree_model_get_iter_first (model, &iter);
15347       gtk_tree_view_search_iter (model, selection,
15348                                  &iter, text,
15349                                  &count, tree_view->priv->selected_iter);
15350       return FALSE;
15351     }
15352 }
15353
15354 static gboolean
15355 gtk_tree_view_search_equal_func (GtkTreeModel *model,
15356                                  gint          column,
15357                                  const gchar  *key,
15358                                  GtkTreeIter  *iter,
15359                                  gpointer      search_data)
15360 {
15361   gboolean retval = TRUE;
15362   const gchar *str;
15363   gchar *normalized_string;
15364   gchar *normalized_key;
15365   gchar *case_normalized_string = NULL;
15366   gchar *case_normalized_key = NULL;
15367   GValue value = G_VALUE_INIT;
15368   GValue transformed = G_VALUE_INIT;
15369
15370   gtk_tree_model_get_value (model, iter, column, &value);
15371
15372   g_value_init (&transformed, G_TYPE_STRING);
15373
15374   if (!g_value_transform (&value, &transformed))
15375     {
15376       g_value_unset (&value);
15377       return TRUE;
15378     }
15379
15380   g_value_unset (&value);
15381
15382   str = g_value_get_string (&transformed);
15383   if (!str)
15384     {
15385       g_value_unset (&transformed);
15386       return TRUE;
15387     }
15388
15389   normalized_string = g_utf8_normalize (str, -1, G_NORMALIZE_ALL);
15390   normalized_key = g_utf8_normalize (key, -1, G_NORMALIZE_ALL);
15391
15392   if (normalized_string && normalized_key)
15393     {
15394       case_normalized_string = g_utf8_casefold (normalized_string, -1);
15395       case_normalized_key = g_utf8_casefold (normalized_key, -1);
15396
15397       if (strncmp (case_normalized_key, case_normalized_string, strlen (case_normalized_key)) == 0)
15398         retval = FALSE;
15399     }
15400
15401   g_value_unset (&transformed);
15402   g_free (normalized_key);
15403   g_free (normalized_string);
15404   g_free (case_normalized_key);
15405   g_free (case_normalized_string);
15406
15407   return retval;
15408 }
15409
15410 static gboolean
15411 gtk_tree_view_search_iter (GtkTreeModel     *model,
15412                            GtkTreeSelection *selection,
15413                            GtkTreeIter      *iter,
15414                            const gchar      *text,
15415                            gint             *count,
15416                            gint              n)
15417 {
15418   GtkRBTree *tree = NULL;
15419   GtkRBNode *node = NULL;
15420   GtkTreePath *path;
15421
15422   GtkTreeView *tree_view = gtk_tree_selection_get_tree_view (selection);
15423
15424   path = gtk_tree_model_get_path (model, iter);
15425   _gtk_tree_view_find_node (tree_view, path, &tree, &node);
15426
15427   do
15428     {
15429       if (! tree_view->priv->search_equal_func (model, tree_view->priv->search_column, text, iter, tree_view->priv->search_user_data))
15430         {
15431           (*count)++;
15432           if (*count == n)
15433             {
15434               gtk_tree_view_scroll_to_cell (tree_view, path, NULL,
15435                                             TRUE, 0.5, 0.0);
15436               gtk_tree_selection_select_iter (selection, iter);
15437               gtk_tree_view_real_set_cursor (tree_view, path, FALSE, TRUE);
15438
15439               if (path)
15440                 gtk_tree_path_free (path);
15441
15442               return TRUE;
15443             }
15444         }
15445
15446       if (node->children)
15447         {
15448           gboolean has_child;
15449           GtkTreeIter tmp;
15450
15451           tree = node->children;
15452           node = tree->root;
15453
15454           while (node->left != tree->nil)
15455             node = node->left;
15456
15457           tmp = *iter;
15458           has_child = gtk_tree_model_iter_children (model, iter, &tmp);
15459           gtk_tree_path_down (path);
15460
15461           /* sanity check */
15462           TREE_VIEW_INTERNAL_ASSERT (has_child, FALSE);
15463         }
15464       else
15465         {
15466           gboolean done = FALSE;
15467
15468           do
15469             {
15470               node = _gtk_rbtree_next (tree, node);
15471
15472               if (node)
15473                 {
15474                   gboolean has_next;
15475
15476                   has_next = gtk_tree_model_iter_next (model, iter);
15477
15478                   done = TRUE;
15479                   gtk_tree_path_next (path);
15480
15481                   /* sanity check */
15482                   TREE_VIEW_INTERNAL_ASSERT (has_next, FALSE);
15483                 }
15484               else
15485                 {
15486                   gboolean has_parent;
15487                   GtkTreeIter tmp_iter = *iter;
15488
15489                   node = tree->parent_node;
15490                   tree = tree->parent_tree;
15491
15492                   if (!tree)
15493                     {
15494                       if (path)
15495                         gtk_tree_path_free (path);
15496
15497                       /* we've run out of tree, done with this func */
15498                       return FALSE;
15499                     }
15500
15501                   has_parent = gtk_tree_model_iter_parent (model,
15502                                                            iter,
15503                                                            &tmp_iter);
15504                   gtk_tree_path_up (path);
15505
15506                   /* sanity check */
15507                   TREE_VIEW_INTERNAL_ASSERT (has_parent, FALSE);
15508                 }
15509             }
15510           while (!done);
15511         }
15512     }
15513   while (1);
15514
15515   return FALSE;
15516 }
15517
15518 static void
15519 gtk_tree_view_search_init (GtkWidget   *entry,
15520                            GtkTreeView *tree_view)
15521 {
15522   gint ret;
15523   gint count = 0;
15524   const gchar *text;
15525   GtkTreeIter iter;
15526   GtkTreeModel *model;
15527   GtkTreeSelection *selection;
15528
15529   g_return_if_fail (GTK_IS_ENTRY (entry));
15530   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
15531
15532   text = gtk_entry_get_text (GTK_ENTRY (entry));
15533
15534   model = gtk_tree_view_get_model (tree_view);
15535   selection = gtk_tree_view_get_selection (tree_view);
15536
15537   /* search */
15538   gtk_tree_selection_unselect_all (selection);
15539   if (tree_view->priv->typeselect_flush_timeout
15540       && !tree_view->priv->search_custom_entry_set)
15541     {
15542       g_source_remove (tree_view->priv->typeselect_flush_timeout);
15543       tree_view->priv->typeselect_flush_timeout =
15544         gdk_threads_add_timeout (GTK_TREE_VIEW_SEARCH_DIALOG_TIMEOUT,
15545                        (GSourceFunc) gtk_tree_view_search_entry_flush_timeout,
15546                        tree_view);
15547     }
15548
15549   if (*text == '\0')
15550     return;
15551
15552   if (!gtk_tree_model_get_iter_first (model, &iter))
15553     return;
15554
15555   ret = gtk_tree_view_search_iter (model, selection,
15556                                    &iter, text,
15557                                    &count, 1);
15558
15559   if (ret)
15560     tree_view->priv->selected_iter = 1;
15561 }
15562
15563 void
15564 _gtk_tree_view_remove_editable (GtkTreeView       *tree_view,
15565                                 GtkTreeViewColumn *column,
15566                                 GtkCellEditable   *cell_editable)
15567 {
15568   if (tree_view->priv->edited_column == NULL)
15569     return;
15570
15571   g_return_if_fail (column == tree_view->priv->edited_column);
15572
15573   tree_view->priv->edited_column = NULL;
15574
15575   if (gtk_widget_has_focus (GTK_WIDGET (cell_editable)))
15576     gtk_widget_grab_focus (GTK_WIDGET (tree_view));
15577
15578   gtk_container_remove (GTK_CONTAINER (tree_view),
15579                         GTK_WIDGET (cell_editable));
15580
15581   /* FIXME should only redraw a single node */
15582   gtk_widget_queue_draw (GTK_WIDGET (tree_view));
15583 }
15584
15585 static gboolean
15586 gtk_tree_view_start_editing (GtkTreeView *tree_view,
15587                              GtkTreePath *cursor_path,
15588                              gboolean     edit_only)
15589 {
15590   GtkTreeIter iter;
15591   GdkRectangle cell_area;
15592   GtkTreeViewColumn *focus_column;
15593   guint flags = 0; /* can be 0, as the flags are primarily for rendering */
15594   gint retval = FALSE;
15595   GtkRBTree *cursor_tree;
15596   GtkRBNode *cursor_node;
15597
15598   g_assert (tree_view->priv->focus_column);
15599   focus_column = tree_view->priv->focus_column;
15600
15601   if (!gtk_widget_get_realized (GTK_WIDGET (tree_view)))
15602     return FALSE;
15603
15604   if (_gtk_tree_view_find_node (tree_view, cursor_path, &cursor_tree, &cursor_node) ||
15605       cursor_node == NULL)
15606     return FALSE;
15607
15608   gtk_tree_model_get_iter (tree_view->priv->model, &iter, cursor_path);
15609
15610   validate_row (tree_view, cursor_tree, cursor_node, &iter, cursor_path);
15611
15612   gtk_tree_view_column_cell_set_cell_data (focus_column,
15613                                            tree_view->priv->model,
15614                                            &iter,
15615                                            GTK_RBNODE_FLAG_SET (cursor_node, GTK_RBNODE_IS_PARENT),
15616                                            cursor_node->children ? TRUE : FALSE);
15617   gtk_tree_view_get_cell_area (tree_view,
15618                                cursor_path,
15619                                focus_column,
15620                                &cell_area);
15621
15622   if (gtk_cell_area_activate (gtk_cell_layout_get_area (GTK_CELL_LAYOUT (focus_column)),
15623                               _gtk_tree_view_column_get_context (focus_column),
15624                               GTK_WIDGET (tree_view),
15625                               &cell_area,
15626                               flags, edit_only))
15627     retval = TRUE;
15628
15629   return retval;
15630 }
15631
15632 void
15633 _gtk_tree_view_add_editable (GtkTreeView       *tree_view,
15634                              GtkTreeViewColumn *column,
15635                              GtkTreePath       *path,
15636                              GtkCellEditable   *cell_editable,
15637                              GdkRectangle      *cell_area)
15638 {
15639   gint pre_val = gtk_adjustment_get_value (tree_view->priv->vadjustment);
15640   GtkRequisition requisition;
15641
15642   tree_view->priv->edited_column = column;
15643
15644   gtk_tree_view_real_set_cursor (tree_view, path, FALSE, TRUE);
15645   cell_area->y += pre_val - (int)gtk_adjustment_get_value (tree_view->priv->vadjustment);
15646
15647   gtk_widget_get_preferred_size (GTK_WIDGET (cell_editable),
15648                                  &requisition, NULL);
15649
15650   tree_view->priv->draw_keyfocus = TRUE;
15651
15652   if (requisition.height < cell_area->height)
15653     {
15654       gint diff = cell_area->height - requisition.height;
15655       gtk_tree_view_put (tree_view,
15656                          GTK_WIDGET (cell_editable),
15657                          cell_area->x, cell_area->y + diff/2,
15658                          cell_area->width, requisition.height);
15659     }
15660   else
15661     {
15662       gtk_tree_view_put (tree_view,
15663                          GTK_WIDGET (cell_editable),
15664                          cell_area->x, cell_area->y,
15665                          cell_area->width, cell_area->height);
15666     }
15667 }
15668
15669 static void
15670 gtk_tree_view_stop_editing (GtkTreeView *tree_view,
15671                             gboolean     cancel_editing)
15672 {
15673   GtkTreeViewColumn *column;
15674
15675   if (tree_view->priv->edited_column == NULL)
15676     return;
15677
15678   /*
15679    * This is very evil. We need to do this, because
15680    * gtk_cell_editable_editing_done may trigger gtk_tree_view_row_changed
15681    * later on. If gtk_tree_view_row_changed notices
15682    * tree_view->priv->edited_column != NULL, it'll call
15683    * gtk_tree_view_stop_editing again. Bad things will happen then.
15684    *
15685    * Please read that again if you intend to modify anything here.
15686    */
15687
15688   column = tree_view->priv->edited_column;
15689   gtk_cell_area_stop_editing (gtk_cell_layout_get_area (GTK_CELL_LAYOUT (column)), cancel_editing);
15690   tree_view->priv->edited_column = NULL;
15691 }
15692
15693
15694 /**
15695  * gtk_tree_view_set_hover_selection:
15696  * @tree_view: a #GtkTreeView
15697  * @hover: %TRUE to enable hover selection mode
15698  *
15699  * Enables or disables the hover selection mode of @tree_view.
15700  * Hover selection makes the selected row follow the pointer.
15701  * Currently, this works only for the selection modes
15702  * %GTK_SELECTION_SINGLE and %GTK_SELECTION_BROWSE.
15703  *
15704  * Since: 2.6
15705  **/
15706 void
15707 gtk_tree_view_set_hover_selection (GtkTreeView *tree_view,
15708                                    gboolean     hover)
15709 {
15710   hover = hover != FALSE;
15711
15712   if (hover != tree_view->priv->hover_selection)
15713     {
15714       tree_view->priv->hover_selection = hover;
15715
15716       g_object_notify (G_OBJECT (tree_view), "hover-selection");
15717     }
15718 }
15719
15720 /**
15721  * gtk_tree_view_get_hover_selection:
15722  * @tree_view: a #GtkTreeView
15723  *
15724  * Returns whether hover selection mode is turned on for @tree_view.
15725  *
15726  * Return value: %TRUE if @tree_view is in hover selection mode
15727  *
15728  * Since: 2.6
15729  **/
15730 gboolean
15731 gtk_tree_view_get_hover_selection (GtkTreeView *tree_view)
15732 {
15733   return tree_view->priv->hover_selection;
15734 }
15735
15736 /**
15737  * gtk_tree_view_set_hover_expand:
15738  * @tree_view: a #GtkTreeView
15739  * @expand: %TRUE to enable hover selection mode
15740  *
15741  * Enables of disables the hover expansion mode of @tree_view.
15742  * Hover expansion makes rows expand or collapse if the pointer
15743  * moves over them.
15744  *
15745  * Since: 2.6
15746  **/
15747 void
15748 gtk_tree_view_set_hover_expand (GtkTreeView *tree_view,
15749                                 gboolean     expand)
15750 {
15751   expand = expand != FALSE;
15752
15753   if (expand != tree_view->priv->hover_expand)
15754     {
15755       tree_view->priv->hover_expand = expand;
15756
15757       g_object_notify (G_OBJECT (tree_view), "hover-expand");
15758     }
15759 }
15760
15761 /**
15762  * gtk_tree_view_get_hover_expand:
15763  * @tree_view: a #GtkTreeView
15764  *
15765  * Returns whether hover expansion mode is turned on for @tree_view.
15766  *
15767  * Return value: %TRUE if @tree_view is in hover expansion mode
15768  *
15769  * Since: 2.6
15770  **/
15771 gboolean
15772 gtk_tree_view_get_hover_expand (GtkTreeView *tree_view)
15773 {
15774   return tree_view->priv->hover_expand;
15775 }
15776
15777 /**
15778  * gtk_tree_view_set_rubber_banding:
15779  * @tree_view: a #GtkTreeView
15780  * @enable: %TRUE to enable rubber banding
15781  *
15782  * Enables or disables rubber banding in @tree_view.  If the selection mode
15783  * is #GTK_SELECTION_MULTIPLE, rubber banding will allow the user to select
15784  * multiple rows by dragging the mouse.
15785  *
15786  * Since: 2.10
15787  **/
15788 void
15789 gtk_tree_view_set_rubber_banding (GtkTreeView *tree_view,
15790                                   gboolean     enable)
15791 {
15792   enable = enable != FALSE;
15793
15794   if (enable != tree_view->priv->rubber_banding_enable)
15795     {
15796       tree_view->priv->rubber_banding_enable = enable;
15797
15798       g_object_notify (G_OBJECT (tree_view), "rubber-banding");
15799     }
15800 }
15801
15802 /**
15803  * gtk_tree_view_get_rubber_banding:
15804  * @tree_view: a #GtkTreeView
15805  *
15806  * Returns whether rubber banding is turned on for @tree_view.  If the
15807  * selection mode is #GTK_SELECTION_MULTIPLE, rubber banding will allow the
15808  * user to select multiple rows by dragging the mouse.
15809  *
15810  * Return value: %TRUE if rubber banding in @tree_view is enabled.
15811  *
15812  * Since: 2.10
15813  **/
15814 gboolean
15815 gtk_tree_view_get_rubber_banding (GtkTreeView *tree_view)
15816 {
15817   return tree_view->priv->rubber_banding_enable;
15818 }
15819
15820 /**
15821  * gtk_tree_view_is_rubber_banding_active:
15822  * @tree_view: a #GtkTreeView
15823  *
15824  * Returns whether a rubber banding operation is currently being done
15825  * in @tree_view.
15826  *
15827  * Return value: %TRUE if a rubber banding operation is currently being
15828  * done in @tree_view.
15829  *
15830  * Since: 2.12
15831  **/
15832 gboolean
15833 gtk_tree_view_is_rubber_banding_active (GtkTreeView *tree_view)
15834 {
15835   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), FALSE);
15836
15837   if (tree_view->priv->rubber_banding_enable
15838       && tree_view->priv->rubber_band_status == RUBBER_BAND_ACTIVE)
15839     return TRUE;
15840
15841   return FALSE;
15842 }
15843
15844 /**
15845  * gtk_tree_view_get_row_separator_func: (skip)
15846  * @tree_view: a #GtkTreeView
15847  *
15848  * Returns the current row separator function.
15849  *
15850  * Return value: the current row separator function.
15851  *
15852  * Since: 2.6
15853  **/
15854 GtkTreeViewRowSeparatorFunc
15855 gtk_tree_view_get_row_separator_func (GtkTreeView *tree_view)
15856 {
15857   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), NULL);
15858
15859   return tree_view->priv->row_separator_func;
15860 }
15861
15862 /**
15863  * gtk_tree_view_set_row_separator_func:
15864  * @tree_view: a #GtkTreeView
15865  * @func: (allow-none): a #GtkTreeViewRowSeparatorFunc
15866  * @data: (allow-none): user data to pass to @func, or %NULL
15867  * @destroy: (allow-none): destroy notifier for @data, or %NULL
15868  *
15869  * Sets the row separator function, which is used to determine
15870  * whether a row should be drawn as a separator. If the row separator
15871  * function is %NULL, no separators are drawn. This is the default value.
15872  *
15873  * Since: 2.6
15874  **/
15875 void
15876 gtk_tree_view_set_row_separator_func (GtkTreeView                 *tree_view,
15877                                       GtkTreeViewRowSeparatorFunc  func,
15878                                       gpointer                     data,
15879                                       GDestroyNotify               destroy)
15880 {
15881   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
15882
15883   if (tree_view->priv->row_separator_destroy)
15884     tree_view->priv->row_separator_destroy (tree_view->priv->row_separator_data);
15885
15886   tree_view->priv->row_separator_func = func;
15887   tree_view->priv->row_separator_data = data;
15888   tree_view->priv->row_separator_destroy = destroy;
15889
15890   /* Have the tree recalculate heights */
15891   _gtk_rbtree_mark_invalid (tree_view->priv->tree);
15892   gtk_widget_queue_resize (GTK_WIDGET (tree_view));
15893 }
15894
15895
15896 static void
15897 gtk_tree_view_grab_notify (GtkWidget *widget,
15898                            gboolean   was_grabbed)
15899 {
15900   GtkTreeView *tree_view = GTK_TREE_VIEW (widget);
15901
15902   tree_view->priv->in_grab = !was_grabbed;
15903
15904   if (!was_grabbed)
15905     {
15906       tree_view->priv->pressed_button = -1;
15907
15908       if (tree_view->priv->rubber_band_status)
15909         gtk_tree_view_stop_rubber_band (tree_view);
15910     }
15911 }
15912
15913 static void
15914 gtk_tree_view_state_flags_changed (GtkWidget     *widget,
15915                                    GtkStateFlags  previous_state)
15916 {
15917   if (gtk_widget_get_realized (widget))
15918     gtk_tree_view_ensure_background (GTK_TREE_VIEW (widget));
15919
15920   gtk_widget_queue_draw (widget);
15921 }
15922
15923 /**
15924  * gtk_tree_view_get_grid_lines:
15925  * @tree_view: a #GtkTreeView
15926  *
15927  * Returns which grid lines are enabled in @tree_view.
15928  *
15929  * Return value: a #GtkTreeViewGridLines value indicating which grid lines
15930  * are enabled.
15931  *
15932  * Since: 2.10
15933  */
15934 GtkTreeViewGridLines
15935 gtk_tree_view_get_grid_lines (GtkTreeView *tree_view)
15936 {
15937   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), 0);
15938
15939   return tree_view->priv->grid_lines;
15940 }
15941
15942 /**
15943  * gtk_tree_view_set_grid_lines:
15944  * @tree_view: a #GtkTreeView
15945  * @grid_lines: a #GtkTreeViewGridLines value indicating which grid lines to
15946  * enable.
15947  *
15948  * Sets which grid lines to draw in @tree_view.
15949  *
15950  * Since: 2.10
15951  */
15952 void
15953 gtk_tree_view_set_grid_lines (GtkTreeView           *tree_view,
15954                               GtkTreeViewGridLines   grid_lines)
15955 {
15956   GtkTreeViewPrivate *priv;
15957   GtkWidget *widget;
15958   GtkTreeViewGridLines old_grid_lines;
15959
15960   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
15961
15962   priv = tree_view->priv;
15963   widget = GTK_WIDGET (tree_view);
15964
15965   old_grid_lines = priv->grid_lines;
15966   priv->grid_lines = grid_lines;
15967
15968   if (gtk_widget_get_realized (widget))
15969     {
15970       if (grid_lines == GTK_TREE_VIEW_GRID_LINES_NONE &&
15971           priv->grid_line_width)
15972         {
15973           priv->grid_line_width = 0;
15974         }
15975
15976       if (grid_lines != GTK_TREE_VIEW_GRID_LINES_NONE &&
15977           !priv->grid_line_width)
15978         {
15979           gint8 *dash_list;
15980
15981           gtk_widget_style_get (widget,
15982                                 "grid-line-width", &priv->grid_line_width,
15983                                 "grid-line-pattern", (gchar *)&dash_list,
15984                                 NULL);
15985
15986           if (dash_list)
15987             {
15988               priv->grid_line_dashes[0] = dash_list[0];
15989               if (dash_list[0])
15990                 priv->grid_line_dashes[1] = dash_list[1];
15991
15992               g_free (dash_list);
15993             }
15994           else
15995             {
15996               priv->grid_line_dashes[0] = 1;
15997               priv->grid_line_dashes[1] = 1;
15998             }
15999         }
16000     }
16001
16002   if (old_grid_lines != grid_lines)
16003     {
16004       gtk_widget_queue_draw (GTK_WIDGET (tree_view));
16005
16006       g_object_notify (G_OBJECT (tree_view), "enable-grid-lines");
16007     }
16008 }
16009
16010 /**
16011  * gtk_tree_view_get_enable_tree_lines:
16012  * @tree_view: a #GtkTreeView.
16013  *
16014  * Returns whether or not tree lines are drawn in @tree_view.
16015  *
16016  * Return value: %TRUE if tree lines are drawn in @tree_view, %FALSE
16017  * otherwise.
16018  *
16019  * Since: 2.10
16020  */
16021 gboolean
16022 gtk_tree_view_get_enable_tree_lines (GtkTreeView *tree_view)
16023 {
16024   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), FALSE);
16025
16026   return tree_view->priv->tree_lines_enabled;
16027 }
16028
16029 /**
16030  * gtk_tree_view_set_enable_tree_lines:
16031  * @tree_view: a #GtkTreeView
16032  * @enabled: %TRUE to enable tree line drawing, %FALSE otherwise.
16033  *
16034  * Sets whether to draw lines interconnecting the expanders in @tree_view.
16035  * This does not have any visible effects for lists.
16036  *
16037  * Since: 2.10
16038  */
16039 void
16040 gtk_tree_view_set_enable_tree_lines (GtkTreeView *tree_view,
16041                                      gboolean     enabled)
16042 {
16043   GtkTreeViewPrivate *priv;
16044   GtkWidget *widget;
16045   gboolean was_enabled;
16046
16047   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
16048
16049   enabled = enabled != FALSE;
16050
16051   priv = tree_view->priv;
16052   widget = GTK_WIDGET (tree_view);
16053
16054   was_enabled = priv->tree_lines_enabled;
16055
16056   priv->tree_lines_enabled = enabled;
16057
16058   if (gtk_widget_get_realized (widget))
16059     {
16060       if (!enabled && priv->tree_line_width)
16061         {
16062           priv->tree_line_width = 0;
16063         }
16064
16065       if (enabled && !priv->tree_line_width)
16066         {
16067           gint8 *dash_list;
16068           gtk_widget_style_get (widget,
16069                                 "tree-line-width", &priv->tree_line_width,
16070                                 "tree-line-pattern", (gchar *)&dash_list,
16071                                 NULL);
16072
16073           if (dash_list)
16074             {
16075               priv->tree_line_dashes[0] = dash_list[0];
16076               if (dash_list[0])
16077                 priv->tree_line_dashes[1] = dash_list[1];
16078
16079               g_free (dash_list);
16080             }
16081           else
16082             {
16083               priv->tree_line_dashes[0] = 1;
16084               priv->tree_line_dashes[1] = 1;
16085             }
16086         }
16087     }
16088
16089   if (was_enabled != enabled)
16090     {
16091       gtk_widget_queue_draw (GTK_WIDGET (tree_view));
16092
16093       g_object_notify (G_OBJECT (tree_view), "enable-tree-lines");
16094     }
16095 }
16096
16097
16098 /**
16099  * gtk_tree_view_set_show_expanders:
16100  * @tree_view: a #GtkTreeView
16101  * @enabled: %TRUE to enable expander drawing, %FALSE otherwise.
16102  *
16103  * Sets whether to draw and enable expanders and indent child rows in
16104  * @tree_view.  When disabled there will be no expanders visible in trees
16105  * and there will be no way to expand and collapse rows by default.  Also
16106  * note that hiding the expanders will disable the default indentation.  You
16107  * can set a custom indentation in this case using
16108  * gtk_tree_view_set_level_indentation().
16109  * This does not have any visible effects for lists.
16110  *
16111  * Since: 2.12
16112  */
16113 void
16114 gtk_tree_view_set_show_expanders (GtkTreeView *tree_view,
16115                                   gboolean     enabled)
16116 {
16117   gboolean was_enabled;
16118
16119   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
16120
16121   enabled = enabled != FALSE;
16122   was_enabled = tree_view->priv->show_expanders;
16123
16124   tree_view->priv->show_expanders = enabled == TRUE;
16125
16126   if (enabled != was_enabled)
16127     gtk_widget_queue_draw (GTK_WIDGET (tree_view));
16128 }
16129
16130 /**
16131  * gtk_tree_view_get_show_expanders:
16132  * @tree_view: a #GtkTreeView.
16133  *
16134  * Returns whether or not expanders are drawn in @tree_view.
16135  *
16136  * Return value: %TRUE if expanders are drawn in @tree_view, %FALSE
16137  * otherwise.
16138  *
16139  * Since: 2.12
16140  */
16141 gboolean
16142 gtk_tree_view_get_show_expanders (GtkTreeView *tree_view)
16143 {
16144   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), FALSE);
16145
16146   return tree_view->priv->show_expanders;
16147 }
16148
16149 /**
16150  * gtk_tree_view_set_level_indentation:
16151  * @tree_view: a #GtkTreeView
16152  * @indentation: the amount, in pixels, of extra indentation in @tree_view.
16153  *
16154  * Sets the amount of extra indentation for child levels to use in @tree_view
16155  * in addition to the default indentation.  The value should be specified in
16156  * pixels, a value of 0 disables this feature and in this case only the default
16157  * indentation will be used.
16158  * This does not have any visible effects for lists.
16159  *
16160  * Since: 2.12
16161  */
16162 void
16163 gtk_tree_view_set_level_indentation (GtkTreeView *tree_view,
16164                                      gint         indentation)
16165 {
16166   tree_view->priv->level_indentation = indentation;
16167
16168   gtk_widget_queue_draw (GTK_WIDGET (tree_view));
16169 }
16170
16171 /**
16172  * gtk_tree_view_get_level_indentation:
16173  * @tree_view: a #GtkTreeView.
16174  *
16175  * Returns the amount, in pixels, of extra indentation for child levels
16176  * in @tree_view.
16177  *
16178  * Return value: the amount of extra indentation for child levels in
16179  * @tree_view.  A return value of 0 means that this feature is disabled.
16180  *
16181  * Since: 2.12
16182  */
16183 gint
16184 gtk_tree_view_get_level_indentation (GtkTreeView *tree_view)
16185 {
16186   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), 0);
16187
16188   return tree_view->priv->level_indentation;
16189 }
16190
16191 /**
16192  * gtk_tree_view_set_tooltip_row:
16193  * @tree_view: a #GtkTreeView
16194  * @tooltip: a #GtkTooltip
16195  * @path: a #GtkTreePath
16196  *
16197  * Sets the tip area of @tooltip to be the area covered by the row at @path.
16198  * See also gtk_tree_view_set_tooltip_column() for a simpler alternative.
16199  * See also gtk_tooltip_set_tip_area().
16200  *
16201  * Since: 2.12
16202  */
16203 void
16204 gtk_tree_view_set_tooltip_row (GtkTreeView *tree_view,
16205                                GtkTooltip  *tooltip,
16206                                GtkTreePath *path)
16207 {
16208   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
16209   g_return_if_fail (GTK_IS_TOOLTIP (tooltip));
16210
16211   gtk_tree_view_set_tooltip_cell (tree_view, tooltip, path, NULL, NULL);
16212 }
16213
16214 /**
16215  * gtk_tree_view_set_tooltip_cell:
16216  * @tree_view: a #GtkTreeView
16217  * @tooltip: a #GtkTooltip
16218  * @path: (allow-none): a #GtkTreePath or %NULL
16219  * @column: (allow-none): a #GtkTreeViewColumn or %NULL
16220  * @cell: (allow-none): a #GtkCellRenderer or %NULL
16221  *
16222  * Sets the tip area of @tooltip to the area @path, @column and @cell have
16223  * in common.  For example if @path is %NULL and @column is set, the tip
16224  * area will be set to the full area covered by @column.  See also
16225  * gtk_tooltip_set_tip_area().
16226  *
16227  * Note that if @path is not specified and @cell is set and part of a column
16228  * containing the expander, the tooltip might not show and hide at the correct
16229  * position.  In such cases @path must be set to the current node under the
16230  * mouse cursor for this function to operate correctly.
16231  *
16232  * See also gtk_tree_view_set_tooltip_column() for a simpler alternative.
16233  *
16234  * Since: 2.12
16235  */
16236 void
16237 gtk_tree_view_set_tooltip_cell (GtkTreeView       *tree_view,
16238                                 GtkTooltip        *tooltip,
16239                                 GtkTreePath       *path,
16240                                 GtkTreeViewColumn *column,
16241                                 GtkCellRenderer   *cell)
16242 {
16243   GtkAllocation allocation;
16244   GdkRectangle rect;
16245
16246   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
16247   g_return_if_fail (GTK_IS_TOOLTIP (tooltip));
16248   g_return_if_fail (column == NULL || GTK_IS_TREE_VIEW_COLUMN (column));
16249   g_return_if_fail (cell == NULL || GTK_IS_CELL_RENDERER (cell));
16250
16251   /* Determine x values. */
16252   if (column && cell)
16253     {
16254       GdkRectangle tmp;
16255       gint start, width;
16256
16257       /* We always pass in path here, whether it is NULL or not.
16258        * For cells in expander columns path must be specified so that
16259        * we can correctly account for the indentation.  This also means
16260        * that the tooltip is constrained vertically by the "Determine y
16261        * values" code below; this is not a real problem since cells actually
16262        * don't stretch vertically in constrast to columns.
16263        */
16264       gtk_tree_view_get_cell_area (tree_view, path, column, &tmp);
16265       gtk_tree_view_column_cell_get_position (column, cell, &start, &width);
16266
16267       gtk_tree_view_convert_bin_window_to_widget_coords (tree_view,
16268                                                          tmp.x + start, 0,
16269                                                          &rect.x, NULL);
16270       rect.width = width;
16271     }
16272   else if (column)
16273     {
16274       GdkRectangle tmp;
16275
16276       gtk_tree_view_get_background_area (tree_view, NULL, column, &tmp);
16277       gtk_tree_view_convert_bin_window_to_widget_coords (tree_view,
16278                                                          tmp.x, 0,
16279                                                          &rect.x, NULL);
16280       rect.width = tmp.width;
16281     }
16282   else
16283     {
16284       gtk_widget_get_allocation (GTK_WIDGET (tree_view), &allocation);
16285       rect.x = 0;
16286       rect.width = allocation.width;
16287     }
16288
16289   /* Determine y values. */
16290   if (path)
16291     {
16292       GdkRectangle tmp;
16293
16294       gtk_tree_view_get_background_area (tree_view, path, NULL, &tmp);
16295       gtk_tree_view_convert_bin_window_to_widget_coords (tree_view,
16296                                                          0, tmp.y,
16297                                                          NULL, &rect.y);
16298       rect.height = tmp.height;
16299     }
16300   else
16301     {
16302       rect.y = 0;
16303       rect.height = gtk_adjustment_get_page_size (tree_view->priv->vadjustment);
16304     }
16305
16306   gtk_tooltip_set_tip_area (tooltip, &rect);
16307 }
16308
16309 /**
16310  * gtk_tree_view_get_tooltip_context:
16311  * @tree_view: a #GtkTreeView
16312  * @x: (inout): the x coordinate (relative to widget coordinates)
16313  * @y: (inout): the y coordinate (relative to widget coordinates)
16314  * @keyboard_tip: whether this is a keyboard tooltip or not
16315  * @model: (out) (allow-none) (transfer none): a pointer to receive a
16316  *         #GtkTreeModel or %NULL
16317  * @path: (out) (allow-none): a pointer to receive a #GtkTreePath or %NULL
16318  * @iter: (out) (allow-none): a pointer to receive a #GtkTreeIter or %NULL
16319  *
16320  * This function is supposed to be used in a #GtkWidget::query-tooltip
16321  * signal handler for #GtkTreeView.  The @x, @y and @keyboard_tip values
16322  * which are received in the signal handler, should be passed to this
16323  * function without modification.
16324  *
16325  * The return value indicates whether there is a tree view row at the given
16326  * coordinates (%TRUE) or not (%FALSE) for mouse tooltips.  For keyboard
16327  * tooltips the row returned will be the cursor row.  When %TRUE, then any of
16328  * @model, @path and @iter which have been provided will be set to point to
16329  * that row and the corresponding model.  @x and @y will always be converted
16330  * to be relative to @tree_view's bin_window if @keyboard_tooltip is %FALSE.
16331  *
16332  * Return value: whether or not the given tooltip context points to a row.
16333  *
16334  * Since: 2.12
16335  */
16336 gboolean
16337 gtk_tree_view_get_tooltip_context (GtkTreeView   *tree_view,
16338                                    gint          *x,
16339                                    gint          *y,
16340                                    gboolean       keyboard_tip,
16341                                    GtkTreeModel **model,
16342                                    GtkTreePath  **path,
16343                                    GtkTreeIter   *iter)
16344 {
16345   GtkTreePath *tmppath = NULL;
16346
16347   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), FALSE);
16348   g_return_val_if_fail (x != NULL, FALSE);
16349   g_return_val_if_fail (y != NULL, FALSE);
16350
16351   if (keyboard_tip)
16352     {
16353       gtk_tree_view_get_cursor (tree_view, &tmppath, NULL);
16354
16355       if (!tmppath)
16356         return FALSE;
16357     }
16358   else
16359     {
16360       gtk_tree_view_convert_widget_to_bin_window_coords (tree_view, *x, *y,
16361                                                          x, y);
16362
16363       if (!gtk_tree_view_get_path_at_pos (tree_view, *x, *y,
16364                                           &tmppath, NULL, NULL, NULL))
16365         return FALSE;
16366     }
16367
16368   if (model)
16369     *model = gtk_tree_view_get_model (tree_view);
16370
16371   if (iter)
16372     gtk_tree_model_get_iter (gtk_tree_view_get_model (tree_view),
16373                              iter, tmppath);
16374
16375   if (path)
16376     *path = tmppath;
16377   else
16378     gtk_tree_path_free (tmppath);
16379
16380   return TRUE;
16381 }
16382
16383 static gboolean
16384 gtk_tree_view_set_tooltip_query_cb (GtkWidget  *widget,
16385                                     gint        x,
16386                                     gint        y,
16387                                     gboolean    keyboard_tip,
16388                                     GtkTooltip *tooltip,
16389                                     gpointer    data)
16390 {
16391   GValue value = G_VALUE_INIT;
16392   GValue transformed = G_VALUE_INIT;
16393   GtkTreeIter iter;
16394   GtkTreePath *path;
16395   GtkTreeModel *model;
16396   GtkTreeView *tree_view = GTK_TREE_VIEW (widget);
16397
16398   if (!gtk_tree_view_get_tooltip_context (GTK_TREE_VIEW (widget),
16399                                           &x, &y,
16400                                           keyboard_tip,
16401                                           &model, &path, &iter))
16402     return FALSE;
16403
16404   gtk_tree_model_get_value (model, &iter,
16405                             tree_view->priv->tooltip_column, &value);
16406
16407   g_value_init (&transformed, G_TYPE_STRING);
16408
16409   if (!g_value_transform (&value, &transformed))
16410     {
16411       g_value_unset (&value);
16412       gtk_tree_path_free (path);
16413
16414       return FALSE;
16415     }
16416
16417   g_value_unset (&value);
16418
16419   if (!g_value_get_string (&transformed))
16420     {
16421       g_value_unset (&transformed);
16422       gtk_tree_path_free (path);
16423
16424       return FALSE;
16425     }
16426
16427   gtk_tooltip_set_markup (tooltip, g_value_get_string (&transformed));
16428   gtk_tree_view_set_tooltip_row (tree_view, tooltip, path);
16429
16430   gtk_tree_path_free (path);
16431   g_value_unset (&transformed);
16432
16433   return TRUE;
16434 }
16435
16436 /**
16437  * gtk_tree_view_set_tooltip_column:
16438  * @tree_view: a #GtkTreeView
16439  * @column: an integer, which is a valid column number for @tree_view's model
16440  *
16441  * If you only plan to have simple (text-only) tooltips on full rows, you
16442  * can use this function to have #GtkTreeView handle these automatically
16443  * for you. @column should be set to the column in @tree_view's model
16444  * containing the tooltip texts, or -1 to disable this feature.
16445  *
16446  * When enabled, #GtkWidget::has-tooltip will be set to %TRUE and
16447  * @tree_view will connect a #GtkWidget::query-tooltip signal handler.
16448  *
16449  * Note that the signal handler sets the text with gtk_tooltip_set_markup(),
16450  * so &amp;, &lt;, etc have to be escaped in the text.
16451  *
16452  * Since: 2.12
16453  */
16454 void
16455 gtk_tree_view_set_tooltip_column (GtkTreeView *tree_view,
16456                                   gint         column)
16457 {
16458   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
16459
16460   if (column == tree_view->priv->tooltip_column)
16461     return;
16462
16463   if (column == -1)
16464     {
16465       g_signal_handlers_disconnect_by_func (tree_view,
16466                                             gtk_tree_view_set_tooltip_query_cb,
16467                                             NULL);
16468       gtk_widget_set_has_tooltip (GTK_WIDGET (tree_view), FALSE);
16469     }
16470   else
16471     {
16472       if (tree_view->priv->tooltip_column == -1)
16473         {
16474           g_signal_connect (tree_view, "query-tooltip",
16475                             G_CALLBACK (gtk_tree_view_set_tooltip_query_cb), NULL);
16476           gtk_widget_set_has_tooltip (GTK_WIDGET (tree_view), TRUE);
16477         }
16478     }
16479
16480   tree_view->priv->tooltip_column = column;
16481   g_object_notify (G_OBJECT (tree_view), "tooltip-column");
16482 }
16483
16484 /**
16485  * gtk_tree_view_get_tooltip_column:
16486  * @tree_view: a #GtkTreeView
16487  *
16488  * Returns the column of @tree_view's model which is being used for
16489  * displaying tooltips on @tree_view's rows.
16490  *
16491  * Return value: the index of the tooltip column that is currently being
16492  * used, or -1 if this is disabled.
16493  *
16494  * Since: 2.12
16495  */
16496 gint
16497 gtk_tree_view_get_tooltip_column (GtkTreeView *tree_view)
16498 {
16499   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), 0);
16500
16501   return tree_view->priv->tooltip_column;
16502 }