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     return TRUE;
5944
5945   tree_view = GTK_TREE_VIEW (widget);
5946
5947   if (tree_view->priv->prelight_node)
5948     _gtk_tree_view_queue_draw_node (tree_view,
5949                                    tree_view->priv->prelight_tree,
5950                                    tree_view->priv->prelight_node,
5951                                    NULL);
5952
5953   tree_view->priv->event_last_x = -10000;
5954   tree_view->priv->event_last_y = -10000;
5955
5956   prelight_or_select (tree_view,
5957                       NULL, NULL,
5958                       -1000, -1000); /* coords not possibly over an arrow */
5959
5960   return TRUE;
5961 }
5962
5963
5964 static gint
5965 gtk_tree_view_focus_out (GtkWidget     *widget,
5966                          GdkEventFocus *event)
5967 {
5968   GtkTreeView *tree_view;
5969
5970   tree_view = GTK_TREE_VIEW (widget);
5971
5972   gtk_widget_queue_draw (widget);
5973
5974   /* destroy interactive search dialog */
5975   if (tree_view->priv->search_window)
5976     gtk_tree_view_search_dialog_hide (tree_view->priv->search_window, tree_view,
5977                                       gdk_event_get_device ((GdkEvent *) event));
5978
5979   return FALSE;
5980 }
5981
5982
5983 /* Incremental Reflow
5984  */
5985
5986 static void
5987 gtk_tree_view_node_queue_redraw (GtkTreeView *tree_view,
5988                                  GtkRBTree   *tree,
5989                                  GtkRBNode   *node)
5990 {
5991   GtkAllocation allocation;
5992   gint y;
5993
5994   y = _gtk_rbtree_node_find_offset (tree, node)
5995     - gtk_adjustment_get_value (tree_view->priv->vadjustment)
5996     + gtk_tree_view_get_effective_header_height (tree_view);
5997
5998   gtk_widget_get_allocation (GTK_WIDGET (tree_view), &allocation);
5999   gtk_widget_queue_draw_area (GTK_WIDGET (tree_view),
6000                               0, y,
6001                               allocation.width,
6002                               GTK_RBNODE_GET_HEIGHT (node));
6003 }
6004
6005 static gboolean
6006 node_is_visible (GtkTreeView *tree_view,
6007                  GtkRBTree   *tree,
6008                  GtkRBNode   *node)
6009 {
6010   int y;
6011   int height;
6012
6013   y = _gtk_rbtree_node_find_offset (tree, node);
6014   height = gtk_tree_view_get_row_height (tree_view, node);
6015
6016   if (y >= gtk_adjustment_get_value (tree_view->priv->vadjustment) &&
6017       y + height <= (gtk_adjustment_get_value (tree_view->priv->vadjustment)
6018                      + gtk_adjustment_get_page_size (tree_view->priv->vadjustment)))
6019     return TRUE;
6020
6021   return FALSE;
6022 }
6023
6024 /* Returns TRUE if it updated the size
6025  */
6026 static gboolean
6027 validate_row (GtkTreeView *tree_view,
6028               GtkRBTree   *tree,
6029               GtkRBNode   *node,
6030               GtkTreeIter *iter,
6031               GtkTreePath *path)
6032 {
6033   GtkTreeViewColumn *column;
6034   GList *list, *first_column, *last_column;
6035   gint height = 0;
6036   gint horizontal_separator;
6037   gint vertical_separator;
6038   gint depth = gtk_tree_path_get_depth (path);
6039   gboolean retval = FALSE;
6040   gboolean is_separator = FALSE;
6041   gboolean draw_vgrid_lines, draw_hgrid_lines;
6042   gint focus_pad;
6043   gint grid_line_width;
6044   gboolean wide_separators;
6045   gint separator_height;
6046
6047   /* double check the row needs validating */
6048   if (! GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_INVALID) &&
6049       ! GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_COLUMN_INVALID))
6050     return FALSE;
6051
6052   is_separator = row_is_separator (tree_view, iter, NULL);
6053
6054   gtk_widget_style_get (GTK_WIDGET (tree_view),
6055                         "focus-padding", &focus_pad,
6056                         "horizontal-separator", &horizontal_separator,
6057                         "vertical-separator", &vertical_separator,
6058                         "grid-line-width", &grid_line_width,
6059                         "wide-separators",  &wide_separators,
6060                         "separator-height", &separator_height,
6061                         NULL);
6062
6063   draw_vgrid_lines =
6064     tree_view->priv->grid_lines == GTK_TREE_VIEW_GRID_LINES_VERTICAL
6065     || tree_view->priv->grid_lines == GTK_TREE_VIEW_GRID_LINES_BOTH;
6066   draw_hgrid_lines =
6067     tree_view->priv->grid_lines == GTK_TREE_VIEW_GRID_LINES_HORIZONTAL
6068     || tree_view->priv->grid_lines == GTK_TREE_VIEW_GRID_LINES_BOTH;
6069
6070   for (last_column = g_list_last (tree_view->priv->columns);
6071        last_column &&
6072        !(gtk_tree_view_column_get_visible (GTK_TREE_VIEW_COLUMN (last_column->data)));
6073        last_column = last_column->prev)
6074     ;
6075
6076   for (first_column = g_list_first (tree_view->priv->columns);
6077        first_column &&
6078        !(gtk_tree_view_column_get_visible (GTK_TREE_VIEW_COLUMN (first_column->data)));
6079        first_column = first_column->next)
6080     ;
6081
6082   for (list = tree_view->priv->columns; list; list = list->next)
6083     {
6084       gint padding = 0;
6085       gint original_width;
6086       gint new_width;
6087       gint row_height;
6088
6089       column = list->data;
6090
6091       if (!gtk_tree_view_column_get_visible (column))
6092         continue;
6093
6094       if (GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_COLUMN_INVALID) &&
6095           !_gtk_tree_view_column_cell_get_dirty (column))
6096         continue;
6097
6098       original_width = _gtk_tree_view_column_get_requested_width (column);
6099
6100       gtk_tree_view_column_cell_set_cell_data (column, tree_view->priv->model, iter,
6101                                                GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_PARENT),
6102                                                node->children?TRUE:FALSE);
6103       gtk_tree_view_column_cell_get_size (column,
6104                                           NULL, NULL, NULL,
6105                                           NULL, &row_height);
6106
6107       if (!is_separator)
6108         {
6109           row_height += vertical_separator;
6110           height = MAX (height, row_height);
6111           height = MAX (height, tree_view->priv->expander_size);
6112         }
6113       else
6114         {
6115           if (wide_separators)
6116             height = separator_height + 2 * focus_pad;
6117           else
6118             height = 2 + 2 * focus_pad;
6119         }
6120
6121       if (gtk_tree_view_is_expander_column (tree_view, column))
6122         {
6123           padding += horizontal_separator + (depth - 1) * tree_view->priv->level_indentation;
6124
6125           if (gtk_tree_view_draw_expanders (tree_view))
6126             padding += depth * tree_view->priv->expander_size;
6127         }
6128       else
6129         padding += horizontal_separator;
6130
6131       if (draw_vgrid_lines)
6132         {
6133           if (list->data == first_column || list->data == last_column)
6134             padding += grid_line_width / 2.0;
6135           else
6136             padding += grid_line_width;
6137         }
6138
6139       /* Update the padding for the column */
6140       _gtk_tree_view_column_push_padding (column, padding);
6141       new_width = _gtk_tree_view_column_get_requested_width (column);
6142
6143       if (new_width > original_width)
6144         retval = TRUE;
6145     }
6146
6147   if (draw_hgrid_lines)
6148     height += grid_line_width;
6149
6150   if (height != GTK_RBNODE_GET_HEIGHT (node))
6151     {
6152       retval = TRUE;
6153       _gtk_rbtree_node_set_height (tree, node, height);
6154     }
6155   _gtk_rbtree_node_mark_valid (tree, node);
6156   tree_view->priv->post_validation_flag = TRUE;
6157
6158   return retval;
6159 }
6160
6161
6162 static void
6163 validate_visible_area (GtkTreeView *tree_view)
6164 {
6165   GtkAllocation allocation;
6166   GtkTreePath *path = NULL;
6167   GtkTreePath *above_path = NULL;
6168   GtkTreeIter iter;
6169   GtkRBTree *tree = NULL;
6170   GtkRBNode *node = NULL;
6171   gboolean need_redraw = FALSE;
6172   gboolean size_changed = FALSE;
6173   gint total_height;
6174   gint area_above = 0;
6175   gint area_below = 0;
6176
6177   if (tree_view->priv->tree == NULL)
6178     return;
6179
6180   if (! GTK_RBNODE_FLAG_SET (tree_view->priv->tree->root, GTK_RBNODE_DESCENDANTS_INVALID) &&
6181       tree_view->priv->scroll_to_path == NULL)
6182     return;
6183
6184   gtk_widget_get_allocation (GTK_WIDGET (tree_view), &allocation);
6185   total_height = allocation.height - gtk_tree_view_get_effective_header_height (tree_view);
6186
6187   if (total_height == 0)
6188     return;
6189
6190   /* First, we check to see if we need to scroll anywhere
6191    */
6192   if (tree_view->priv->scroll_to_path)
6193     {
6194       path = gtk_tree_row_reference_get_path (tree_view->priv->scroll_to_path);
6195       if (path && !_gtk_tree_view_find_node (tree_view, path, &tree, &node))
6196         {
6197           /* we are going to scroll, and will update dy */
6198           gtk_tree_model_get_iter (tree_view->priv->model, &iter, path);
6199           if (GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_INVALID) ||
6200               GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_COLUMN_INVALID))
6201             {
6202               _gtk_tree_view_queue_draw_node (tree_view, tree, node, NULL);
6203               if (validate_row (tree_view, tree, node, &iter, path))
6204                 size_changed = TRUE;
6205             }
6206
6207           if (tree_view->priv->scroll_to_use_align)
6208             {
6209               gint height = gtk_tree_view_get_row_height (tree_view, node);
6210               area_above = (total_height - height) *
6211                 tree_view->priv->scroll_to_row_align;
6212               area_below = total_height - area_above - height;
6213               area_above = MAX (area_above, 0);
6214               area_below = MAX (area_below, 0);
6215             }
6216           else
6217             {
6218               /* two cases:
6219                * 1) row not visible
6220                * 2) row visible
6221                */
6222               gint dy;
6223               gint height = gtk_tree_view_get_row_height (tree_view, node);
6224
6225               dy = _gtk_rbtree_node_find_offset (tree, node);
6226
6227               if (dy >= gtk_adjustment_get_value (tree_view->priv->vadjustment) &&
6228                   dy + height <= (gtk_adjustment_get_value (tree_view->priv->vadjustment)
6229                                   + gtk_adjustment_get_page_size (tree_view->priv->vadjustment)))
6230                 {
6231                   /* row visible: keep the row at the same position */
6232                   area_above = dy - gtk_adjustment_get_value (tree_view->priv->vadjustment);
6233                   area_below = (gtk_adjustment_get_value (tree_view->priv->vadjustment) +
6234                                 gtk_adjustment_get_page_size (tree_view->priv->vadjustment))
6235                                - dy - height;
6236                 }
6237               else
6238                 {
6239                   /* row not visible */
6240                   if (dy >= 0
6241                       && dy + height <= gtk_adjustment_get_page_size (tree_view->priv->vadjustment))
6242                     {
6243                       /* row at the beginning -- fixed */
6244                       area_above = dy;
6245                       area_below = gtk_adjustment_get_page_size (tree_view->priv->vadjustment)
6246                                    - area_above - height;
6247                     }
6248                   else if (dy >= (gtk_adjustment_get_upper (tree_view->priv->vadjustment) -
6249                                   gtk_adjustment_get_page_size (tree_view->priv->vadjustment)))
6250                     {
6251                       /* row at the end -- fixed */
6252                       area_above = dy - (gtk_adjustment_get_upper (tree_view->priv->vadjustment) -
6253                                    gtk_adjustment_get_page_size (tree_view->priv->vadjustment));
6254                       area_below = gtk_adjustment_get_page_size (tree_view->priv->vadjustment) -
6255                                    area_above - height;
6256
6257                       if (area_below < 0)
6258                         {
6259                           area_above = gtk_adjustment_get_page_size (tree_view->priv->vadjustment) - height;
6260                           area_below = 0;
6261                         }
6262                     }
6263                   else
6264                     {
6265                       /* row somewhere in the middle, bring it to the top
6266                        * of the view
6267                        */
6268                       area_above = 0;
6269                       area_below = total_height - height;
6270                     }
6271                 }
6272             }
6273         }
6274       else
6275         /* the scroll to isn't valid; ignore it.
6276          */
6277         {
6278           if (tree_view->priv->scroll_to_path && !path)
6279             {
6280               gtk_tree_row_reference_free (tree_view->priv->scroll_to_path);
6281               tree_view->priv->scroll_to_path = NULL;
6282             }
6283           if (path)
6284             gtk_tree_path_free (path);
6285           path = NULL;
6286         }
6287     }
6288
6289   /* We didn't have a scroll_to set, so we just handle things normally
6290    */
6291   if (path == NULL)
6292     {
6293       gint offset;
6294
6295       offset = _gtk_rbtree_find_offset (tree_view->priv->tree,
6296                                         TREE_WINDOW_Y_TO_RBTREE_Y (tree_view, 0),
6297                                         &tree, &node);
6298       if (node == NULL)
6299         {
6300           /* In this case, nothing has been validated */
6301           path = gtk_tree_path_new_first ();
6302           _gtk_tree_view_find_node (tree_view, path, &tree, &node);
6303         }
6304       else
6305         {
6306           path = _gtk_tree_view_find_path (tree_view, tree, node);
6307           total_height += offset;
6308         }
6309
6310       gtk_tree_model_get_iter (tree_view->priv->model, &iter, path);
6311
6312       if (GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_INVALID) ||
6313           GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_COLUMN_INVALID))
6314         {
6315           _gtk_tree_view_queue_draw_node (tree_view, tree, node, NULL);
6316           if (validate_row (tree_view, tree, node, &iter, path))
6317             size_changed = TRUE;
6318         }
6319       area_above = 0;
6320       area_below = total_height - gtk_tree_view_get_row_height (tree_view, node);
6321     }
6322
6323   above_path = gtk_tree_path_copy (path);
6324
6325   /* if we do not validate any row above the new top_row, we will make sure
6326    * that the row immediately above top_row has been validated. (if we do not
6327    * do this, _gtk_rbtree_find_offset will find the row above top_row, because
6328    * when invalidated that row's height will be zero. and this will mess up
6329    * scrolling).
6330    */
6331   if (area_above == 0)
6332     {
6333       GtkRBTree *tmptree;
6334       GtkRBNode *tmpnode;
6335
6336       _gtk_tree_view_find_node (tree_view, above_path, &tmptree, &tmpnode);
6337       _gtk_rbtree_prev_full (tmptree, tmpnode, &tmptree, &tmpnode);
6338
6339       if (tmpnode)
6340         {
6341           GtkTreePath *tmppath;
6342           GtkTreeIter tmpiter;
6343
6344           tmppath = _gtk_tree_view_find_path (tree_view, tmptree, tmpnode);
6345           gtk_tree_model_get_iter (tree_view->priv->model, &tmpiter, tmppath);
6346
6347           if (GTK_RBNODE_FLAG_SET (tmpnode, GTK_RBNODE_INVALID) ||
6348               GTK_RBNODE_FLAG_SET (tmpnode, GTK_RBNODE_COLUMN_INVALID))
6349             {
6350               _gtk_tree_view_queue_draw_node (tree_view, tmptree, tmpnode, NULL);
6351               if (validate_row (tree_view, tmptree, tmpnode, &tmpiter, tmppath))
6352                 size_changed = TRUE;
6353             }
6354
6355           gtk_tree_path_free (tmppath);
6356         }
6357     }
6358
6359   /* Now, we walk forwards and backwards, measuring rows. Unfortunately,
6360    * backwards is much slower then forward, as there is no iter_prev function.
6361    * We go forwards first in case we run out of tree.  Then we go backwards to
6362    * fill out the top.
6363    */
6364   while (node && area_below > 0)
6365     {
6366       if (node->children)
6367         {
6368           GtkTreeIter parent = iter;
6369           gboolean has_child;
6370
6371           tree = node->children;
6372           node = tree->root;
6373
6374           g_assert (node != tree->nil);
6375
6376           while (node->left != tree->nil)
6377             node = node->left;
6378           has_child = gtk_tree_model_iter_children (tree_view->priv->model,
6379                                                     &iter,
6380                                                     &parent);
6381           TREE_VIEW_INTERNAL_ASSERT_VOID (has_child);
6382           gtk_tree_path_down (path);
6383         }
6384       else
6385         {
6386           gboolean done = FALSE;
6387           do
6388             {
6389               node = _gtk_rbtree_next (tree, node);
6390               if (node != NULL)
6391                 {
6392                   gboolean has_next = gtk_tree_model_iter_next (tree_view->priv->model, &iter);
6393                   done = TRUE;
6394                   gtk_tree_path_next (path);
6395
6396                   /* Sanity Check! */
6397                   TREE_VIEW_INTERNAL_ASSERT_VOID (has_next);
6398                 }
6399               else
6400                 {
6401                   GtkTreeIter parent_iter = iter;
6402                   gboolean has_parent;
6403
6404                   node = tree->parent_node;
6405                   tree = tree->parent_tree;
6406                   if (tree == NULL)
6407                     break;
6408                   has_parent = gtk_tree_model_iter_parent (tree_view->priv->model,
6409                                                            &iter,
6410                                                            &parent_iter);
6411                   gtk_tree_path_up (path);
6412
6413                   /* Sanity check */
6414                   TREE_VIEW_INTERNAL_ASSERT_VOID (has_parent);
6415                 }
6416             }
6417           while (!done);
6418         }
6419
6420       if (!node)
6421         break;
6422
6423       if (GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_INVALID) ||
6424           GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_COLUMN_INVALID))
6425         {
6426           _gtk_tree_view_queue_draw_node (tree_view, tree, node, NULL);
6427           if (validate_row (tree_view, tree, node, &iter, path))
6428               size_changed = TRUE;
6429         }
6430
6431       area_below -= gtk_tree_view_get_row_height (tree_view, node);
6432     }
6433   gtk_tree_path_free (path);
6434
6435   /* If we ran out of tree, and have extra area_below left, we need to add it
6436    * to area_above */
6437   if (area_below > 0)
6438     area_above += area_below;
6439
6440   _gtk_tree_view_find_node (tree_view, above_path, &tree, &node);
6441
6442   /* We walk backwards */
6443   while (area_above > 0)
6444     {
6445       _gtk_rbtree_prev_full (tree, node, &tree, &node);
6446
6447       /* Always find the new path in the tree.  We cannot just assume
6448        * a gtk_tree_path_prev() is enough here, as there might be children
6449        * in between this node and the previous sibling node.  If this
6450        * appears to be a performance hotspot in profiles, we can look into
6451        * intrigate logic for keeping path, node and iter in sync like
6452        * we do for forward walks.  (Which will be hard because of the lacking
6453        * iter_prev).
6454        */
6455
6456       if (node == NULL)
6457         break;
6458
6459       gtk_tree_path_free (above_path);
6460       above_path = _gtk_tree_view_find_path (tree_view, tree, node);
6461
6462       gtk_tree_model_get_iter (tree_view->priv->model, &iter, above_path);
6463
6464       if (GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_INVALID) ||
6465           GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_COLUMN_INVALID))
6466         {
6467           _gtk_tree_view_queue_draw_node (tree_view, tree, node, NULL);
6468           if (validate_row (tree_view, tree, node, &iter, above_path))
6469             size_changed = TRUE;
6470         }
6471       area_above -= gtk_tree_view_get_row_height (tree_view, node);
6472     }
6473
6474   /* if we scrolled to a path, we need to set the dy here,
6475    * and sync the top row accordingly
6476    */
6477   if (tree_view->priv->scroll_to_path)
6478     {
6479       gtk_tree_view_set_top_row (tree_view, above_path, -area_above);
6480       gtk_tree_view_top_row_to_dy (tree_view);
6481
6482       need_redraw = TRUE;
6483     }
6484   else if (tree_view->priv->height <= gtk_adjustment_get_page_size (tree_view->priv->vadjustment))
6485     {
6486       /* when we are not scrolling, we should never set dy to something
6487        * else than zero. we update top_row to be in sync with dy = 0.
6488        */
6489       gtk_adjustment_set_value (GTK_ADJUSTMENT (tree_view->priv->vadjustment), 0);
6490       gtk_tree_view_dy_to_top_row (tree_view);
6491     }
6492   else if (gtk_adjustment_get_value (tree_view->priv->vadjustment) + gtk_adjustment_get_page_size (tree_view->priv->vadjustment) > tree_view->priv->height)
6493     {
6494       gtk_adjustment_set_value (GTK_ADJUSTMENT (tree_view->priv->vadjustment), tree_view->priv->height - gtk_adjustment_get_page_size (tree_view->priv->vadjustment));
6495       gtk_tree_view_dy_to_top_row (tree_view);
6496     }
6497   else
6498     gtk_tree_view_top_row_to_dy (tree_view);
6499
6500   /* update width/height and queue a resize */
6501   if (size_changed)
6502     {
6503       GtkRequisition requisition;
6504
6505       /* We temporarily guess a size, under the assumption that it will be the
6506        * same when we get our next size_allocate.  If we don't do this, we'll be
6507        * in an inconsistent state if we call top_row_to_dy. */
6508
6509       gtk_widget_get_preferred_size (GTK_WIDGET (tree_view),
6510                                      &requisition, NULL);
6511       gtk_adjustment_set_upper (tree_view->priv->hadjustment,
6512                                 MAX (gtk_adjustment_get_upper (tree_view->priv->hadjustment), requisition.width));
6513       gtk_adjustment_set_upper (tree_view->priv->vadjustment,
6514                                 MAX (gtk_adjustment_get_upper (tree_view->priv->vadjustment), requisition.height));
6515       gtk_widget_queue_resize (GTK_WIDGET (tree_view));
6516     }
6517
6518   if (tree_view->priv->scroll_to_path)
6519     {
6520       gtk_tree_row_reference_free (tree_view->priv->scroll_to_path);
6521       tree_view->priv->scroll_to_path = NULL;
6522     }
6523
6524   if (above_path)
6525     gtk_tree_path_free (above_path);
6526
6527   if (tree_view->priv->scroll_to_column)
6528     {
6529       tree_view->priv->scroll_to_column = NULL;
6530     }
6531   if (need_redraw)
6532     gtk_widget_queue_draw (GTK_WIDGET (tree_view));
6533 }
6534
6535 static void
6536 initialize_fixed_height_mode (GtkTreeView *tree_view)
6537 {
6538   if (!tree_view->priv->tree)
6539     return;
6540
6541   if (tree_view->priv->fixed_height < 0)
6542     {
6543       GtkTreeIter iter;
6544       GtkTreePath *path;
6545
6546       GtkRBTree *tree = NULL;
6547       GtkRBNode *node = NULL;
6548
6549       tree = tree_view->priv->tree;
6550       node = tree->root;
6551
6552       path = _gtk_tree_view_find_path (tree_view, tree, node);
6553       gtk_tree_model_get_iter (tree_view->priv->model, &iter, path);
6554
6555       validate_row (tree_view, tree, node, &iter, path);
6556
6557       gtk_tree_path_free (path);
6558
6559       tree_view->priv->fixed_height = gtk_tree_view_get_row_height (tree_view, node);
6560     }
6561
6562    _gtk_rbtree_set_fixed_height (tree_view->priv->tree,
6563                                  tree_view->priv->fixed_height, TRUE);
6564 }
6565
6566 /* Our strategy for finding nodes to validate is a little convoluted.  We find
6567  * the left-most uninvalidated node.  We then try walking right, validating
6568  * nodes.  Once we find a valid node, we repeat the previous process of finding
6569  * the first invalid node.
6570  */
6571
6572 static gboolean
6573 do_validate_rows (GtkTreeView *tree_view, gboolean queue_resize)
6574 {
6575   GtkRBTree *tree = NULL;
6576   GtkRBNode *node = NULL;
6577   gboolean validated_area = FALSE;
6578   gint retval = TRUE;
6579   GtkTreePath *path = NULL;
6580   GtkTreeIter iter;
6581   GTimer *timer;
6582   gint i = 0;
6583
6584   gint y = -1;
6585   gint prev_height = -1;
6586   gboolean fixed_height = TRUE;
6587
6588   g_assert (tree_view);
6589
6590   if (tree_view->priv->tree == NULL)
6591       return FALSE;
6592
6593   if (tree_view->priv->fixed_height_mode)
6594     {
6595       if (tree_view->priv->fixed_height < 0)
6596         initialize_fixed_height_mode (tree_view);
6597
6598       return FALSE;
6599     }
6600
6601   timer = g_timer_new ();
6602   g_timer_start (timer);
6603
6604   do
6605     {
6606       gboolean changed = FALSE;
6607
6608       if (! GTK_RBNODE_FLAG_SET (tree_view->priv->tree->root, GTK_RBNODE_DESCENDANTS_INVALID))
6609         {
6610           retval = FALSE;
6611           goto done;
6612         }
6613
6614       if (path != NULL)
6615         {
6616           node = _gtk_rbtree_next (tree, node);
6617           if (node != NULL)
6618             {
6619               TREE_VIEW_INTERNAL_ASSERT (gtk_tree_model_iter_next (tree_view->priv->model, &iter), FALSE);
6620               gtk_tree_path_next (path);
6621             }
6622           else
6623             {
6624               gtk_tree_path_free (path);
6625               path = NULL;
6626             }
6627         }
6628
6629       if (path == NULL)
6630         {
6631           tree = tree_view->priv->tree;
6632           node = tree_view->priv->tree->root;
6633
6634           g_assert (GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_DESCENDANTS_INVALID));
6635
6636           do
6637             {
6638               if (node->left != tree->nil &&
6639                   GTK_RBNODE_FLAG_SET (node->left, GTK_RBNODE_DESCENDANTS_INVALID))
6640                 {
6641                   node = node->left;
6642                 }
6643               else if (node->right != tree->nil &&
6644                        GTK_RBNODE_FLAG_SET (node->right, GTK_RBNODE_DESCENDANTS_INVALID))
6645                 {
6646                   node = node->right;
6647                 }
6648               else if (GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_INVALID) ||
6649                        GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_COLUMN_INVALID))
6650                 {
6651                   break;
6652                 }
6653               else if (node->children != NULL)
6654                 {
6655                   tree = node->children;
6656                   node = tree->root;
6657                 }
6658               else
6659                 /* RBTree corruption!  All bad */
6660                 g_assert_not_reached ();
6661             }
6662           while (TRUE);
6663           path = _gtk_tree_view_find_path (tree_view, tree, node);
6664           gtk_tree_model_get_iter (tree_view->priv->model, &iter, path);
6665         }
6666
6667       changed = validate_row (tree_view, tree, node, &iter, path);
6668       validated_area = changed || validated_area;
6669
6670       if (changed)
6671         {
6672           gint offset = gtk_tree_view_get_row_y_offset (tree_view, tree, node);
6673
6674           if (y == -1 || y > offset)
6675             y = offset;
6676         }
6677
6678       if (!tree_view->priv->fixed_height_check)
6679         {
6680           gint height;
6681
6682           height = gtk_tree_view_get_row_height (tree_view, node);
6683           if (prev_height < 0)
6684             prev_height = height;
6685           else if (prev_height != height)
6686             fixed_height = FALSE;
6687         }
6688
6689       i++;
6690     }
6691   while (g_timer_elapsed (timer, NULL) < GTK_TREE_VIEW_TIME_MS_PER_IDLE / 1000.);
6692
6693   if (!tree_view->priv->fixed_height_check)
6694    {
6695      if (fixed_height)
6696        _gtk_rbtree_set_fixed_height (tree_view->priv->tree, prev_height, FALSE);
6697
6698      tree_view->priv->fixed_height_check = 1;
6699    }
6700
6701  done:
6702   if (validated_area)
6703     {
6704       GtkRequisition requisition;
6705
6706       /* We temporarily guess a size, under the assumption that it will be the
6707        * same when we get our next size_allocate.  If we don't do this, we'll be
6708        * in an inconsistent state when we call top_row_to_dy. */
6709
6710       /* FIXME: This is called from size_request, for some reason it is not infinitely
6711        * recursing, we cannot call gtk_widget_get_preferred_size() here because that's
6712        * not allowed (from inside ->get_preferred_width/height() implementations, one
6713        * should call the vfuncs directly). However what is desired here is the full
6714        * size including any margins and limited by any alignment (i.e. after
6715        * GtkWidget:adjust_size_request() is called).
6716        *
6717        * Currently bypassing this but the real solution is to not update the scroll adjustments
6718        * untill we've recieved an allocation (never update scroll adjustments from size-requests).
6719        */
6720       gtk_tree_view_size_request (GTK_WIDGET (tree_view), &requisition, FALSE);
6721
6722       /* If rows above the current position have changed height, this has
6723        * affected the current view and thus needs a redraw.
6724        */
6725       if (y != -1 && y < gtk_adjustment_get_value (tree_view->priv->vadjustment))
6726         gtk_widget_queue_draw (GTK_WIDGET (tree_view));
6727
6728       gtk_adjustment_set_upper (tree_view->priv->hadjustment,
6729                                 MAX (gtk_adjustment_get_upper (tree_view->priv->hadjustment), requisition.width));
6730       gtk_adjustment_set_upper (tree_view->priv->vadjustment,
6731                                 MAX (gtk_adjustment_get_upper (tree_view->priv->vadjustment), requisition.height));
6732
6733       if (queue_resize)
6734         gtk_widget_queue_resize_no_redraw (GTK_WIDGET (tree_view));
6735     }
6736
6737   if (path) gtk_tree_path_free (path);
6738   g_timer_destroy (timer);
6739
6740   return retval;
6741 }
6742
6743 static gboolean
6744 validate_rows (GtkTreeView *tree_view)
6745 {
6746   gboolean retval;
6747
6748   retval = do_validate_rows (tree_view, TRUE);
6749
6750   if (! retval && tree_view->priv->validate_rows_timer)
6751     {
6752       g_source_remove (tree_view->priv->validate_rows_timer);
6753       tree_view->priv->validate_rows_timer = 0;
6754     }
6755
6756   return retval;
6757 }
6758
6759 static gboolean
6760 validate_rows_handler (GtkTreeView *tree_view)
6761 {
6762   gboolean retval;
6763
6764   retval = do_validate_rows (tree_view, TRUE);
6765   if (! retval && tree_view->priv->validate_rows_timer)
6766     {
6767       g_source_remove (tree_view->priv->validate_rows_timer);
6768       tree_view->priv->validate_rows_timer = 0;
6769     }
6770
6771   return retval;
6772 }
6773
6774 static gboolean
6775 do_presize_handler (GtkTreeView *tree_view)
6776 {
6777   if (tree_view->priv->mark_rows_col_dirty)
6778     {
6779       if (tree_view->priv->tree)
6780         _gtk_rbtree_column_invalid (tree_view->priv->tree);
6781       tree_view->priv->mark_rows_col_dirty = FALSE;
6782     }
6783   validate_visible_area (tree_view);
6784   tree_view->priv->presize_handler_timer = 0;
6785
6786   if (tree_view->priv->fixed_height_mode)
6787     {
6788       GtkRequisition requisition;
6789
6790       gtk_widget_get_preferred_size (GTK_WIDGET (tree_view),
6791                                      &requisition, NULL);
6792
6793       gtk_adjustment_set_upper (tree_view->priv->hadjustment,
6794                                 MAX (gtk_adjustment_get_upper (tree_view->priv->hadjustment), requisition.width));
6795       gtk_adjustment_set_upper (tree_view->priv->vadjustment,
6796                                 MAX (gtk_adjustment_get_upper (tree_view->priv->vadjustment), requisition.height));
6797       gtk_widget_queue_resize (GTK_WIDGET (tree_view));
6798     }
6799
6800   return FALSE;
6801 }
6802
6803 static gboolean
6804 presize_handler_callback (gpointer data)
6805 {
6806   do_presize_handler (GTK_TREE_VIEW (data));
6807
6808   return FALSE;
6809 }
6810
6811 static void
6812 install_presize_handler (GtkTreeView *tree_view)
6813 {
6814   if (! gtk_widget_get_realized (GTK_WIDGET (tree_view)))
6815     return;
6816
6817   if (! tree_view->priv->presize_handler_timer)
6818     {
6819       tree_view->priv->presize_handler_timer =
6820         gdk_threads_add_idle_full (GTK_PRIORITY_RESIZE - 2, presize_handler_callback, tree_view, NULL);
6821     }
6822   if (! tree_view->priv->validate_rows_timer)
6823     {
6824       tree_view->priv->validate_rows_timer =
6825         gdk_threads_add_idle_full (GTK_TREE_VIEW_PRIORITY_VALIDATE, (GSourceFunc) validate_rows_handler, tree_view, NULL);
6826     }
6827 }
6828
6829 static void
6830 gtk_tree_view_bin_process_updates (GtkTreeView *tree_view)
6831 {
6832   /* Prior to drawing, we make sure the visible area is validated. */
6833   if (tree_view->priv->presize_handler_timer)
6834     {
6835       g_source_remove (tree_view->priv->presize_handler_timer);
6836       tree_view->priv->presize_handler_timer = 0;
6837
6838       do_presize_handler (tree_view);
6839     }
6840
6841   gdk_window_process_updates (tree_view->priv->bin_window, TRUE);
6842 }
6843
6844 static gboolean
6845 scroll_sync_handler (GtkTreeView *tree_view)
6846 {
6847   if (tree_view->priv->height <= gtk_adjustment_get_page_size (tree_view->priv->vadjustment))
6848     gtk_adjustment_set_value (GTK_ADJUSTMENT (tree_view->priv->vadjustment), 0);
6849   else if (gtk_tree_row_reference_valid (tree_view->priv->top_row))
6850     gtk_tree_view_top_row_to_dy (tree_view);
6851   else
6852     gtk_tree_view_dy_to_top_row (tree_view);
6853
6854   tree_view->priv->scroll_sync_timer = 0;
6855
6856   return FALSE;
6857 }
6858
6859 static void
6860 install_scroll_sync_handler (GtkTreeView *tree_view)
6861 {
6862   if (!gtk_widget_get_realized (GTK_WIDGET (tree_view)))
6863     return;
6864
6865   if (!tree_view->priv->scroll_sync_timer)
6866     {
6867       tree_view->priv->scroll_sync_timer =
6868         gdk_threads_add_idle_full (GTK_TREE_VIEW_PRIORITY_SCROLL_SYNC, (GSourceFunc) scroll_sync_handler, tree_view, NULL);
6869     }
6870 }
6871
6872 static void
6873 gtk_tree_view_set_top_row (GtkTreeView *tree_view,
6874                            GtkTreePath *path,
6875                            gint         offset)
6876 {
6877   gtk_tree_row_reference_free (tree_view->priv->top_row);
6878
6879   if (!path)
6880     {
6881       tree_view->priv->top_row = NULL;
6882       tree_view->priv->top_row_dy = 0;
6883     }
6884   else
6885     {
6886       tree_view->priv->top_row = gtk_tree_row_reference_new_proxy (G_OBJECT (tree_view), tree_view->priv->model, path);
6887       tree_view->priv->top_row_dy = offset;
6888     }
6889 }
6890
6891 /* Always call this iff dy is in the visible range.  If the tree is empty, then
6892  * it's set to be NULL, and top_row_dy is 0;
6893  */
6894 static void
6895 gtk_tree_view_dy_to_top_row (GtkTreeView *tree_view)
6896 {
6897   gint offset;
6898   GtkTreePath *path;
6899   GtkRBTree *tree;
6900   GtkRBNode *node;
6901
6902   if (tree_view->priv->tree == NULL)
6903     {
6904       gtk_tree_view_set_top_row (tree_view, NULL, 0);
6905     }
6906   else
6907     {
6908       offset = _gtk_rbtree_find_offset (tree_view->priv->tree,
6909                                         tree_view->priv->dy,
6910                                         &tree, &node);
6911
6912       if (tree == NULL)
6913         {
6914           gtk_tree_view_set_top_row (tree_view, NULL, 0);
6915         }
6916       else
6917         {
6918           path = _gtk_tree_view_find_path (tree_view, tree, node);
6919           gtk_tree_view_set_top_row (tree_view, path, offset);
6920           gtk_tree_path_free (path);
6921         }
6922     }
6923 }
6924
6925 static void
6926 gtk_tree_view_top_row_to_dy (GtkTreeView *tree_view)
6927 {
6928   GtkTreePath *path;
6929   GtkRBTree *tree;
6930   GtkRBNode *node;
6931   int new_dy;
6932
6933   /* Avoid recursive calls */
6934   if (tree_view->priv->in_top_row_to_dy)
6935     return;
6936
6937   if (tree_view->priv->top_row)
6938     path = gtk_tree_row_reference_get_path (tree_view->priv->top_row);
6939   else
6940     path = NULL;
6941
6942   if (!path)
6943     tree = NULL;
6944   else
6945     _gtk_tree_view_find_node (tree_view, path, &tree, &node);
6946
6947   if (path)
6948     gtk_tree_path_free (path);
6949
6950   if (tree == NULL)
6951     {
6952       /* keep dy and set new toprow */
6953       gtk_tree_row_reference_free (tree_view->priv->top_row);
6954       tree_view->priv->top_row = NULL;
6955       tree_view->priv->top_row_dy = 0;
6956       /* DO NOT install the idle handler */
6957       gtk_tree_view_dy_to_top_row (tree_view);
6958       return;
6959     }
6960
6961   if (gtk_tree_view_get_row_height (tree_view, node)
6962       < tree_view->priv->top_row_dy)
6963     {
6964       /* new top row -- do NOT install the idle handler */
6965       gtk_tree_view_dy_to_top_row (tree_view);
6966       return;
6967     }
6968
6969   new_dy = _gtk_rbtree_node_find_offset (tree, node);
6970   new_dy += tree_view->priv->top_row_dy;
6971
6972   if (new_dy + gtk_adjustment_get_page_size (tree_view->priv->vadjustment) > tree_view->priv->height)
6973     new_dy = tree_view->priv->height - gtk_adjustment_get_page_size (tree_view->priv->vadjustment);
6974
6975   new_dy = MAX (0, new_dy);
6976
6977   tree_view->priv->in_top_row_to_dy = TRUE;
6978   gtk_adjustment_set_value (tree_view->priv->vadjustment, (gdouble)new_dy);
6979   tree_view->priv->in_top_row_to_dy = FALSE;
6980 }
6981
6982
6983 void
6984 _gtk_tree_view_install_mark_rows_col_dirty (GtkTreeView *tree_view,
6985                                             gboolean     install_handler)
6986 {
6987   tree_view->priv->mark_rows_col_dirty = TRUE;
6988
6989   if (install_handler)
6990     install_presize_handler (tree_view);
6991 }
6992
6993 /*
6994  * This function works synchronously (due to the while (validate_rows...)
6995  * loop).
6996  *
6997  * There was a check for column_type != GTK_TREE_VIEW_COLUMN_AUTOSIZE
6998  * here. You now need to check that yourself.
6999  */
7000 void
7001 _gtk_tree_view_column_autosize (GtkTreeView *tree_view,
7002                                 GtkTreeViewColumn *column)
7003 {
7004   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
7005   g_return_if_fail (GTK_IS_TREE_VIEW_COLUMN (column));
7006
7007   _gtk_tree_view_column_cell_set_dirty (column, FALSE);
7008
7009   do_presize_handler (tree_view);
7010   while (validate_rows (tree_view));
7011
7012   gtk_widget_queue_resize (GTK_WIDGET (tree_view));
7013 }
7014
7015 /* Drag-and-drop */
7016
7017 static void
7018 set_source_row (GdkDragContext *context,
7019                 GtkTreeModel   *model,
7020                 GtkTreePath    *source_row)
7021 {
7022   g_object_set_data_full (G_OBJECT (context),
7023                           I_("gtk-tree-view-source-row"),
7024                           source_row ? gtk_tree_row_reference_new (model, source_row) : NULL,
7025                           (GDestroyNotify) (source_row ? gtk_tree_row_reference_free : NULL));
7026 }
7027
7028 static GtkTreePath*
7029 get_source_row (GdkDragContext *context)
7030 {
7031   GtkTreeRowReference *ref =
7032     g_object_get_data (G_OBJECT (context), "gtk-tree-view-source-row");
7033
7034   if (ref)
7035     return gtk_tree_row_reference_get_path (ref);
7036   else
7037     return NULL;
7038 }
7039
7040 typedef struct
7041 {
7042   GtkTreeRowReference *dest_row;
7043   guint                path_down_mode   : 1;
7044   guint                empty_view_drop  : 1;
7045   guint                drop_append_mode : 1;
7046 }
7047 DestRow;
7048
7049 static void
7050 dest_row_free (gpointer data)
7051 {
7052   DestRow *dr = (DestRow *)data;
7053
7054   gtk_tree_row_reference_free (dr->dest_row);
7055   g_slice_free (DestRow, dr);
7056 }
7057
7058 static void
7059 set_dest_row (GdkDragContext *context,
7060               GtkTreeModel   *model,
7061               GtkTreePath    *dest_row,
7062               gboolean        path_down_mode,
7063               gboolean        empty_view_drop,
7064               gboolean        drop_append_mode)
7065 {
7066   DestRow *dr;
7067
7068   if (!dest_row)
7069     {
7070       g_object_set_data_full (G_OBJECT (context), I_("gtk-tree-view-dest-row"),
7071                               NULL, NULL);
7072       return;
7073     }
7074
7075   dr = g_slice_new (DestRow);
7076
7077   dr->dest_row = gtk_tree_row_reference_new (model, dest_row);
7078   dr->path_down_mode = path_down_mode != FALSE;
7079   dr->empty_view_drop = empty_view_drop != FALSE;
7080   dr->drop_append_mode = drop_append_mode != FALSE;
7081
7082   g_object_set_data_full (G_OBJECT (context), I_("gtk-tree-view-dest-row"),
7083                           dr, (GDestroyNotify) dest_row_free);
7084 }
7085
7086 static GtkTreePath*
7087 get_dest_row (GdkDragContext *context,
7088               gboolean       *path_down_mode)
7089 {
7090   DestRow *dr =
7091     g_object_get_data (G_OBJECT (context), "gtk-tree-view-dest-row");
7092
7093   if (dr)
7094     {
7095       GtkTreePath *path = NULL;
7096
7097       if (path_down_mode)
7098         *path_down_mode = dr->path_down_mode;
7099
7100       if (dr->dest_row)
7101         path = gtk_tree_row_reference_get_path (dr->dest_row);
7102       else if (dr->empty_view_drop)
7103         path = gtk_tree_path_new_from_indices (0, -1);
7104       else
7105         path = NULL;
7106
7107       if (path && dr->drop_append_mode)
7108         gtk_tree_path_next (path);
7109
7110       return path;
7111     }
7112   else
7113     return NULL;
7114 }
7115
7116 /* Get/set whether drag_motion requested the drag data and
7117  * drag_data_received should thus not actually insert the data,
7118  * since the data doesn't result from a drop.
7119  */
7120 static void
7121 set_status_pending (GdkDragContext *context,
7122                     GdkDragAction   suggested_action)
7123 {
7124   g_object_set_data (G_OBJECT (context),
7125                      I_("gtk-tree-view-status-pending"),
7126                      GINT_TO_POINTER (suggested_action));
7127 }
7128
7129 static GdkDragAction
7130 get_status_pending (GdkDragContext *context)
7131 {
7132   return GPOINTER_TO_INT (g_object_get_data (G_OBJECT (context),
7133                                              "gtk-tree-view-status-pending"));
7134 }
7135
7136 static TreeViewDragInfo*
7137 get_info (GtkTreeView *tree_view)
7138 {
7139   return g_object_get_data (G_OBJECT (tree_view), "gtk-tree-view-drag-info");
7140 }
7141
7142 static void
7143 destroy_info (TreeViewDragInfo *di)
7144 {
7145   g_slice_free (TreeViewDragInfo, di);
7146 }
7147
7148 static TreeViewDragInfo*
7149 ensure_info (GtkTreeView *tree_view)
7150 {
7151   TreeViewDragInfo *di;
7152
7153   di = get_info (tree_view);
7154
7155   if (di == NULL)
7156     {
7157       di = g_slice_new0 (TreeViewDragInfo);
7158
7159       g_object_set_data_full (G_OBJECT (tree_view),
7160                               I_("gtk-tree-view-drag-info"),
7161                               di,
7162                               (GDestroyNotify) destroy_info);
7163     }
7164
7165   return di;
7166 }
7167
7168 static void
7169 remove_info (GtkTreeView *tree_view)
7170 {
7171   g_object_set_data (G_OBJECT (tree_view), I_("gtk-tree-view-drag-info"), NULL);
7172 }
7173
7174 #if 0
7175 static gint
7176 drag_scan_timeout (gpointer data)
7177 {
7178   GtkTreeView *tree_view;
7179   gint x, y;
7180   GdkModifierType state;
7181   GtkTreePath *path = NULL;
7182   GtkTreeViewColumn *column = NULL;
7183   GdkRectangle visible_rect;
7184
7185   GDK_THREADS_ENTER ();
7186
7187   tree_view = GTK_TREE_VIEW (data);
7188
7189   gdk_window_get_device_position (tree_view->priv->bin_window,
7190                                   gdk_device_manager_get_client_pointer (
7191                                     gdk_display_get_device_manager (
7192                                       gtk_widget_get_display (GTK_WIDGET (tree_view)))),
7193                                   &x, &y, &state);
7194
7195   gtk_tree_view_get_visible_rect (tree_view, &visible_rect);
7196
7197   /* See if we are near the edge. */
7198   if ((x - visible_rect.x) < SCROLL_EDGE_SIZE ||
7199       (visible_rect.x + visible_rect.width - x) < SCROLL_EDGE_SIZE ||
7200       (y - visible_rect.y) < SCROLL_EDGE_SIZE ||
7201       (visible_rect.y + visible_rect.height - y) < SCROLL_EDGE_SIZE)
7202     {
7203       gtk_tree_view_get_path_at_pos (tree_view,
7204                                      tree_view->priv->bin_window,
7205                                      x, y,
7206                                      &path,
7207                                      &column,
7208                                      NULL,
7209                                      NULL);
7210
7211       if (path != NULL)
7212         {
7213           gtk_tree_view_scroll_to_cell (tree_view,
7214                                         path,
7215                                         column,
7216                                         TRUE,
7217                                         0.5, 0.5);
7218
7219           gtk_tree_path_free (path);
7220         }
7221     }
7222
7223   GDK_THREADS_LEAVE ();
7224
7225   return TRUE;
7226 }
7227 #endif /* 0 */
7228
7229 static void
7230 add_scroll_timeout (GtkTreeView *tree_view)
7231 {
7232   if (tree_view->priv->scroll_timeout == 0)
7233     {
7234       tree_view->priv->scroll_timeout =
7235         gdk_threads_add_timeout (150, scroll_row_timeout, tree_view);
7236     }
7237 }
7238
7239 static void
7240 remove_scroll_timeout (GtkTreeView *tree_view)
7241 {
7242   if (tree_view->priv->scroll_timeout != 0)
7243     {
7244       g_source_remove (tree_view->priv->scroll_timeout);
7245       tree_view->priv->scroll_timeout = 0;
7246     }
7247 }
7248
7249 static gboolean
7250 check_model_dnd (GtkTreeModel *model,
7251                  GType         required_iface,
7252                  const gchar  *signal)
7253 {
7254   if (model == NULL || !G_TYPE_CHECK_INSTANCE_TYPE ((model), required_iface))
7255     {
7256       g_warning ("You must override the default '%s' handler "
7257                  "on GtkTreeView when using models that don't support "
7258                  "the %s interface and enabling drag-and-drop. The simplest way to do this "
7259                  "is to connect to '%s' and call "
7260                  "g_signal_stop_emission_by_name() in your signal handler to prevent "
7261                  "the default handler from running. Look at the source code "
7262                  "for the default handler in gtktreeview.c to get an idea what "
7263                  "your handler should do. (gtktreeview.c is in the GTK source "
7264                  "code.) If you're using GTK from a language other than C, "
7265                  "there may be a more natural way to override default handlers, e.g. via derivation.",
7266                  signal, g_type_name (required_iface), signal);
7267       return FALSE;
7268     }
7269   else
7270     return TRUE;
7271 }
7272
7273 static void
7274 remove_open_timeout (GtkTreeView *tree_view)
7275 {
7276   if (tree_view->priv->open_dest_timeout != 0)
7277     {
7278       g_source_remove (tree_view->priv->open_dest_timeout);
7279       tree_view->priv->open_dest_timeout = 0;
7280     }
7281 }
7282
7283
7284 static gint
7285 open_row_timeout (gpointer data)
7286 {
7287   GtkTreeView *tree_view = data;
7288   GtkTreePath *dest_path = NULL;
7289   GtkTreeViewDropPosition pos;
7290   gboolean result = FALSE;
7291
7292   gtk_tree_view_get_drag_dest_row (tree_view,
7293                                    &dest_path,
7294                                    &pos);
7295
7296   if (dest_path &&
7297       (pos == GTK_TREE_VIEW_DROP_INTO_OR_AFTER ||
7298        pos == GTK_TREE_VIEW_DROP_INTO_OR_BEFORE))
7299     {
7300       gtk_tree_view_expand_row (tree_view, dest_path, FALSE);
7301       tree_view->priv->open_dest_timeout = 0;
7302
7303       gtk_tree_path_free (dest_path);
7304     }
7305   else
7306     {
7307       if (dest_path)
7308         gtk_tree_path_free (dest_path);
7309
7310       result = TRUE;
7311     }
7312
7313   return result;
7314 }
7315
7316 static gboolean
7317 scroll_row_timeout (gpointer data)
7318 {
7319   GtkTreeView *tree_view = data;
7320
7321   gtk_tree_view_vertical_autoscroll (tree_view);
7322
7323   if (tree_view->priv->rubber_band_status == RUBBER_BAND_ACTIVE)
7324     gtk_tree_view_update_rubber_band (tree_view);
7325
7326   return TRUE;
7327 }
7328
7329 /* Returns TRUE if event should not be propagated to parent widgets */
7330 static gboolean
7331 set_destination_row (GtkTreeView    *tree_view,
7332                      GdkDragContext *context,
7333                      /* coordinates relative to the widget */
7334                      gint            x,
7335                      gint            y,
7336                      GdkDragAction  *suggested_action,
7337                      GdkAtom        *target)
7338 {
7339   GtkTreePath *path = NULL;
7340   GtkTreeViewDropPosition pos;
7341   GtkTreeViewDropPosition old_pos;
7342   TreeViewDragInfo *di;
7343   GtkWidget *widget;
7344   GtkTreePath *old_dest_path = NULL;
7345   gboolean can_drop = FALSE;
7346
7347   *suggested_action = 0;
7348   *target = GDK_NONE;
7349
7350   widget = GTK_WIDGET (tree_view);
7351
7352   di = get_info (tree_view);
7353
7354   if (di == NULL || y - gtk_tree_view_get_effective_header_height (tree_view) < 0)
7355     {
7356       /* someone unset us as a drag dest, note that if
7357        * we return FALSE drag_leave isn't called
7358        */
7359
7360       gtk_tree_view_set_drag_dest_row (tree_view,
7361                                        NULL,
7362                                        GTK_TREE_VIEW_DROP_BEFORE);
7363
7364       remove_scroll_timeout (GTK_TREE_VIEW (widget));
7365       remove_open_timeout (GTK_TREE_VIEW (widget));
7366
7367       return FALSE; /* no longer a drop site */
7368     }
7369
7370   *target = gtk_drag_dest_find_target (widget, context,
7371                                        gtk_drag_dest_get_target_list (widget));
7372   if (*target == GDK_NONE)
7373     {
7374       return FALSE;
7375     }
7376
7377   if (!gtk_tree_view_get_dest_row_at_pos (tree_view,
7378                                           x, y,
7379                                           &path,
7380                                           &pos))
7381     {
7382       gint n_children;
7383       GtkTreeModel *model;
7384
7385       remove_open_timeout (tree_view);
7386
7387       /* the row got dropped on empty space, let's setup a special case
7388        */
7389
7390       if (path)
7391         gtk_tree_path_free (path);
7392
7393       model = gtk_tree_view_get_model (tree_view);
7394
7395       n_children = gtk_tree_model_iter_n_children (model, NULL);
7396       if (n_children)
7397         {
7398           pos = GTK_TREE_VIEW_DROP_AFTER;
7399           path = gtk_tree_path_new_from_indices (n_children - 1, -1);
7400         }
7401       else
7402         {
7403           pos = GTK_TREE_VIEW_DROP_BEFORE;
7404           path = gtk_tree_path_new_from_indices (0, -1);
7405         }
7406
7407       can_drop = TRUE;
7408
7409       goto out;
7410     }
7411
7412   g_assert (path);
7413
7414   /* If we left the current row's "open" zone, unset the timeout for
7415    * opening the row
7416    */
7417   gtk_tree_view_get_drag_dest_row (tree_view,
7418                                    &old_dest_path,
7419                                    &old_pos);
7420
7421   if (old_dest_path &&
7422       (gtk_tree_path_compare (path, old_dest_path) != 0 ||
7423        !(pos == GTK_TREE_VIEW_DROP_INTO_OR_AFTER ||
7424          pos == GTK_TREE_VIEW_DROP_INTO_OR_BEFORE)))
7425     remove_open_timeout (tree_view);
7426
7427   if (old_dest_path)
7428     gtk_tree_path_free (old_dest_path);
7429
7430   if (TRUE /* FIXME if the location droppable predicate */)
7431     {
7432       can_drop = TRUE;
7433     }
7434
7435 out:
7436   if (can_drop)
7437     {
7438       GtkWidget *source_widget;
7439
7440       *suggested_action = gdk_drag_context_get_suggested_action (context);
7441       source_widget = gtk_drag_get_source_widget (context);
7442
7443       if (source_widget == widget)
7444         {
7445           /* Default to MOVE, unless the user has
7446            * pressed ctrl or shift to affect available actions
7447            */
7448           if ((gdk_drag_context_get_actions (context) & GDK_ACTION_MOVE) != 0)
7449             *suggested_action = GDK_ACTION_MOVE;
7450         }
7451
7452       gtk_tree_view_set_drag_dest_row (GTK_TREE_VIEW (widget),
7453                                        path, pos);
7454     }
7455   else
7456     {
7457       /* can't drop here */
7458       remove_open_timeout (tree_view);
7459
7460       gtk_tree_view_set_drag_dest_row (GTK_TREE_VIEW (widget),
7461                                        NULL,
7462                                        GTK_TREE_VIEW_DROP_BEFORE);
7463     }
7464
7465   if (path)
7466     gtk_tree_path_free (path);
7467
7468   return TRUE;
7469 }
7470
7471 static GtkTreePath*
7472 get_logical_dest_row (GtkTreeView *tree_view,
7473                       gboolean    *path_down_mode,
7474                       gboolean    *drop_append_mode)
7475 {
7476   /* adjust path to point to the row the drop goes in front of */
7477   GtkTreePath *path = NULL;
7478   GtkTreeViewDropPosition pos;
7479
7480   g_return_val_if_fail (path_down_mode != NULL, NULL);
7481   g_return_val_if_fail (drop_append_mode != NULL, NULL);
7482
7483   *path_down_mode = FALSE;
7484   *drop_append_mode = 0;
7485
7486   gtk_tree_view_get_drag_dest_row (tree_view, &path, &pos);
7487
7488   if (path == NULL)
7489     return NULL;
7490
7491   if (pos == GTK_TREE_VIEW_DROP_BEFORE)
7492     ; /* do nothing */
7493   else if (pos == GTK_TREE_VIEW_DROP_INTO_OR_BEFORE ||
7494            pos == GTK_TREE_VIEW_DROP_INTO_OR_AFTER)
7495     *path_down_mode = TRUE;
7496   else
7497     {
7498       GtkTreeIter iter;
7499       GtkTreeModel *model = gtk_tree_view_get_model (tree_view);
7500
7501       g_assert (pos == GTK_TREE_VIEW_DROP_AFTER);
7502
7503       if (!gtk_tree_model_get_iter (model, &iter, path) ||
7504           !gtk_tree_model_iter_next (model, &iter))
7505         *drop_append_mode = 1;
7506       else
7507         {
7508           *drop_append_mode = 0;
7509           gtk_tree_path_next (path);
7510         }
7511     }
7512
7513   return path;
7514 }
7515
7516 static gboolean
7517 gtk_tree_view_maybe_begin_dragging_row (GtkTreeView      *tree_view,
7518                                         GdkEventMotion   *event)
7519 {
7520   GtkWidget *widget = GTK_WIDGET (tree_view);
7521   GdkDragContext *context;
7522   TreeViewDragInfo *di;
7523   GtkTreePath *path = NULL;
7524   gint button;
7525   gint cell_x, cell_y;
7526   GtkTreeModel *model;
7527   gboolean retval = FALSE;
7528
7529   di = get_info (tree_view);
7530
7531   if (di == NULL || !di->source_set)
7532     goto out;
7533
7534   if (tree_view->priv->pressed_button < 0)
7535     goto out;
7536
7537   if (!gtk_drag_check_threshold (widget,
7538                                  tree_view->priv->press_start_x,
7539                                  tree_view->priv->press_start_y,
7540                                  event->x, event->y))
7541     goto out;
7542
7543   model = gtk_tree_view_get_model (tree_view);
7544
7545   if (model == NULL)
7546     goto out;
7547
7548   button = tree_view->priv->pressed_button;
7549   tree_view->priv->pressed_button = -1;
7550
7551   gtk_tree_view_get_path_at_pos (tree_view,
7552                                  tree_view->priv->press_start_x,
7553                                  tree_view->priv->press_start_y,
7554                                  &path,
7555                                  NULL,
7556                                  &cell_x,
7557                                  &cell_y);
7558
7559   if (path == NULL)
7560     goto out;
7561
7562   if (!GTK_IS_TREE_DRAG_SOURCE (model) ||
7563       !gtk_tree_drag_source_row_draggable (GTK_TREE_DRAG_SOURCE (model),
7564                                            path))
7565     goto out;
7566
7567   if (!(GDK_BUTTON1_MASK << (button - 1) & di->start_button_mask))
7568     goto out;
7569
7570   /* Now we can begin the drag */
7571
7572   retval = TRUE;
7573
7574   context = gtk_drag_begin (widget,
7575                             gtk_drag_source_get_target_list (widget),
7576                             di->source_actions,
7577                             button,
7578                             (GdkEvent*)event);
7579
7580   set_source_row (context, model, path);
7581
7582  out:
7583   if (path)
7584     gtk_tree_path_free (path);
7585
7586   return retval;
7587 }
7588
7589
7590 static void
7591 gtk_tree_view_drag_begin (GtkWidget      *widget,
7592                           GdkDragContext *context)
7593 {
7594   GtkTreeView *tree_view;
7595   GtkTreePath *path = NULL;
7596   gint cell_x, cell_y;
7597   cairo_surface_t *row_pix;
7598   TreeViewDragInfo *di;
7599
7600   tree_view = GTK_TREE_VIEW (widget);
7601
7602   /* if the user uses a custom DND source impl, we don't set the icon here */
7603   di = get_info (tree_view);
7604
7605   if (di == NULL || !di->source_set)
7606     return;
7607
7608   gtk_tree_view_get_path_at_pos (tree_view,
7609                                  tree_view->priv->press_start_x,
7610                                  tree_view->priv->press_start_y,
7611                                  &path,
7612                                  NULL,
7613                                  &cell_x,
7614                                  &cell_y);
7615
7616   /* If path is NULL, there's nothing we can drag.  For now, we silently
7617    * bail out.  Actually, dragging should not be possible from an empty
7618    * tree view, but there's no way we can cancel that from here.
7619    * Automatically unsetting the tree view as drag source for empty models
7620    * is something that would likely break other people's code ...
7621    */
7622   if (!path)
7623     return;
7624
7625   row_pix = gtk_tree_view_create_row_drag_icon (tree_view,
7626                                                 path);
7627   cairo_surface_set_device_offset (row_pix,
7628                                    /* the + 1 is for the black border in the icon */
7629                                    - (tree_view->priv->press_start_x + 1),
7630                                    - (cell_y + 1));
7631
7632   gtk_drag_set_icon_surface (context, row_pix);
7633
7634   cairo_surface_destroy (row_pix);
7635   gtk_tree_path_free (path);
7636 }
7637
7638 static void
7639 gtk_tree_view_drag_end (GtkWidget      *widget,
7640                         GdkDragContext *context)
7641 {
7642   /* do nothing */
7643 }
7644
7645 /* Default signal implementations for the drag signals */
7646 static void
7647 gtk_tree_view_drag_data_get (GtkWidget        *widget,
7648                              GdkDragContext   *context,
7649                              GtkSelectionData *selection_data,
7650                              guint             info,
7651                              guint             time)
7652 {
7653   GtkTreeView *tree_view;
7654   GtkTreeModel *model;
7655   TreeViewDragInfo *di;
7656   GtkTreePath *source_row;
7657
7658   tree_view = GTK_TREE_VIEW (widget);
7659
7660   model = gtk_tree_view_get_model (tree_view);
7661
7662   if (model == NULL)
7663     return;
7664
7665   di = get_info (GTK_TREE_VIEW (widget));
7666
7667   if (di == NULL)
7668     return;
7669
7670   source_row = get_source_row (context);
7671
7672   if (source_row == NULL)
7673     return;
7674
7675   /* We can implement the GTK_TREE_MODEL_ROW target generically for
7676    * any model; for DragSource models there are some other targets
7677    * we also support.
7678    */
7679
7680   if (GTK_IS_TREE_DRAG_SOURCE (model) &&
7681       gtk_tree_drag_source_drag_data_get (GTK_TREE_DRAG_SOURCE (model),
7682                                           source_row,
7683                                           selection_data))
7684     goto done;
7685
7686   /* If drag_data_get does nothing, try providing row data. */
7687   if (gtk_selection_data_get_target (selection_data) == gdk_atom_intern_static_string ("GTK_TREE_MODEL_ROW"))
7688     {
7689       gtk_tree_set_row_drag_data (selection_data,
7690                                   model,
7691                                   source_row);
7692     }
7693
7694  done:
7695   gtk_tree_path_free (source_row);
7696 }
7697
7698
7699 static void
7700 gtk_tree_view_drag_data_delete (GtkWidget      *widget,
7701                                 GdkDragContext *context)
7702 {
7703   TreeViewDragInfo *di;
7704   GtkTreeModel *model;
7705   GtkTreeView *tree_view;
7706   GtkTreePath *source_row;
7707
7708   tree_view = GTK_TREE_VIEW (widget);
7709   model = gtk_tree_view_get_model (tree_view);
7710
7711   if (!check_model_dnd (model, GTK_TYPE_TREE_DRAG_SOURCE, "drag_data_delete"))
7712     return;
7713
7714   di = get_info (tree_view);
7715
7716   if (di == NULL)
7717     return;
7718
7719   source_row = get_source_row (context);
7720
7721   if (source_row == NULL)
7722     return;
7723
7724   gtk_tree_drag_source_drag_data_delete (GTK_TREE_DRAG_SOURCE (model),
7725                                          source_row);
7726
7727   gtk_tree_path_free (source_row);
7728
7729   set_source_row (context, NULL, NULL);
7730 }
7731
7732 static void
7733 gtk_tree_view_drag_leave (GtkWidget      *widget,
7734                           GdkDragContext *context,
7735                           guint             time)
7736 {
7737   /* unset any highlight row */
7738   gtk_tree_view_set_drag_dest_row (GTK_TREE_VIEW (widget),
7739                                    NULL,
7740                                    GTK_TREE_VIEW_DROP_BEFORE);
7741
7742   remove_scroll_timeout (GTK_TREE_VIEW (widget));
7743   remove_open_timeout (GTK_TREE_VIEW (widget));
7744 }
7745
7746
7747 static gboolean
7748 gtk_tree_view_drag_motion (GtkWidget        *widget,
7749                            GdkDragContext   *context,
7750                            /* coordinates relative to the widget */
7751                            gint              x,
7752                            gint              y,
7753                            guint             time)
7754 {
7755   gboolean empty;
7756   GtkTreePath *path = NULL;
7757   GtkTreeViewDropPosition pos;
7758   GtkTreeView *tree_view;
7759   GdkDragAction suggested_action = 0;
7760   GdkAtom target;
7761
7762   tree_view = GTK_TREE_VIEW (widget);
7763
7764   if (!set_destination_row (tree_view, context, x, y, &suggested_action, &target))
7765     return FALSE;
7766
7767   gtk_tree_view_get_drag_dest_row (tree_view, &path, &pos);
7768
7769   /* we only know this *after* set_desination_row */
7770   empty = tree_view->priv->empty_view_drop;
7771
7772   if (path == NULL && !empty)
7773     {
7774       /* Can't drop here. */
7775       gdk_drag_status (context, 0, time);
7776     }
7777   else
7778     {
7779       if (tree_view->priv->open_dest_timeout == 0 &&
7780           (pos == GTK_TREE_VIEW_DROP_INTO_OR_AFTER ||
7781            pos == GTK_TREE_VIEW_DROP_INTO_OR_BEFORE))
7782         {
7783           tree_view->priv->open_dest_timeout =
7784             gdk_threads_add_timeout (AUTO_EXPAND_TIMEOUT, open_row_timeout, tree_view);
7785         }
7786       else
7787         {
7788           add_scroll_timeout (tree_view);
7789         }
7790
7791       if (target == gdk_atom_intern_static_string ("GTK_TREE_MODEL_ROW"))
7792         {
7793           /* Request data so we can use the source row when
7794            * determining whether to accept the drop
7795            */
7796           set_status_pending (context, suggested_action);
7797           gtk_drag_get_data (widget, context, target, time);
7798         }
7799       else
7800         {
7801           set_status_pending (context, 0);
7802           gdk_drag_status (context, suggested_action, time);
7803         }
7804     }
7805
7806   if (path)
7807     gtk_tree_path_free (path);
7808
7809   return TRUE;
7810 }
7811
7812
7813 static gboolean
7814 gtk_tree_view_drag_drop (GtkWidget        *widget,
7815                          GdkDragContext   *context,
7816                          /* coordinates relative to the widget */
7817                          gint              x,
7818                          gint              y,
7819                          guint             time)
7820 {
7821   GtkTreeView *tree_view;
7822   GtkTreePath *path;
7823   GdkDragAction suggested_action = 0;
7824   GdkAtom target = GDK_NONE;
7825   TreeViewDragInfo *di;
7826   GtkTreeModel *model;
7827   gboolean path_down_mode;
7828   gboolean drop_append_mode;
7829
7830   tree_view = GTK_TREE_VIEW (widget);
7831
7832   model = gtk_tree_view_get_model (tree_view);
7833
7834   remove_scroll_timeout (GTK_TREE_VIEW (widget));
7835   remove_open_timeout (GTK_TREE_VIEW (widget));
7836
7837   di = get_info (tree_view);
7838
7839   if (di == NULL)
7840     return FALSE;
7841
7842   if (!check_model_dnd (model, GTK_TYPE_TREE_DRAG_DEST, "drag_drop"))
7843     return FALSE;
7844
7845   if (!set_destination_row (tree_view, context, x, y, &suggested_action, &target))
7846     return FALSE;
7847
7848   path = get_logical_dest_row (tree_view, &path_down_mode, &drop_append_mode);
7849
7850   if (target != GDK_NONE && path != NULL)
7851     {
7852       /* in case a motion had requested drag data, change things so we
7853        * treat drag data receives as a drop.
7854        */
7855       set_status_pending (context, 0);
7856       set_dest_row (context, model, path,
7857                     path_down_mode, tree_view->priv->empty_view_drop,
7858                     drop_append_mode);
7859     }
7860
7861   if (path)
7862     gtk_tree_path_free (path);
7863
7864   /* Unset this thing */
7865   gtk_tree_view_set_drag_dest_row (GTK_TREE_VIEW (widget),
7866                                    NULL,
7867                                    GTK_TREE_VIEW_DROP_BEFORE);
7868
7869   if (target != GDK_NONE)
7870     {
7871       gtk_drag_get_data (widget, context, target, time);
7872       return TRUE;
7873     }
7874   else
7875     return FALSE;
7876 }
7877
7878 static void
7879 gtk_tree_view_drag_data_received (GtkWidget        *widget,
7880                                   GdkDragContext   *context,
7881                                   /* coordinates relative to the widget */
7882                                   gint              x,
7883                                   gint              y,
7884                                   GtkSelectionData *selection_data,
7885                                   guint             info,
7886                                   guint             time)
7887 {
7888   GtkTreePath *path;
7889   TreeViewDragInfo *di;
7890   gboolean accepted = FALSE;
7891   GtkTreeModel *model;
7892   GtkTreeView *tree_view;
7893   GtkTreePath *dest_row;
7894   GdkDragAction suggested_action;
7895   gboolean path_down_mode;
7896   gboolean drop_append_mode;
7897
7898   tree_view = GTK_TREE_VIEW (widget);
7899
7900   model = gtk_tree_view_get_model (tree_view);
7901
7902   if (!check_model_dnd (model, GTK_TYPE_TREE_DRAG_DEST, "drag_data_received"))
7903     return;
7904
7905   di = get_info (tree_view);
7906
7907   if (di == NULL)
7908     return;
7909
7910   suggested_action = get_status_pending (context);
7911
7912   if (suggested_action)
7913     {
7914       /* We are getting this data due to a request in drag_motion,
7915        * rather than due to a request in drag_drop, so we are just
7916        * supposed to call drag_status, not actually paste in the
7917        * data.
7918        */
7919       path = get_logical_dest_row (tree_view, &path_down_mode,
7920                                    &drop_append_mode);
7921
7922       if (path == NULL)
7923         suggested_action = 0;
7924       else if (path_down_mode)
7925         gtk_tree_path_down (path);
7926
7927       if (suggested_action)
7928         {
7929           if (!gtk_tree_drag_dest_row_drop_possible (GTK_TREE_DRAG_DEST (model),
7930                                                      path,
7931                                                      selection_data))
7932             {
7933               if (path_down_mode)
7934                 {
7935                   path_down_mode = FALSE;
7936                   gtk_tree_path_up (path);
7937
7938                   if (!gtk_tree_drag_dest_row_drop_possible (GTK_TREE_DRAG_DEST (model),
7939                                                              path,
7940                                                              selection_data))
7941                     suggested_action = 0;
7942                 }
7943               else
7944                 suggested_action = 0;
7945             }
7946         }
7947
7948       gdk_drag_status (context, suggested_action, time);
7949
7950       if (path)
7951         gtk_tree_path_free (path);
7952
7953       /* If you can't drop, remove user drop indicator until the next motion */
7954       if (suggested_action == 0)
7955         gtk_tree_view_set_drag_dest_row (GTK_TREE_VIEW (widget),
7956                                          NULL,
7957                                          GTK_TREE_VIEW_DROP_BEFORE);
7958
7959       return;
7960     }
7961
7962   dest_row = get_dest_row (context, &path_down_mode);
7963
7964   if (dest_row == NULL)
7965     return;
7966
7967   if (gtk_selection_data_get_length (selection_data) >= 0)
7968     {
7969       if (path_down_mode)
7970         {
7971           gtk_tree_path_down (dest_row);
7972           if (!gtk_tree_drag_dest_row_drop_possible (GTK_TREE_DRAG_DEST (model),
7973                                                      dest_row, selection_data))
7974             gtk_tree_path_up (dest_row);
7975         }
7976     }
7977
7978   if (gtk_selection_data_get_length (selection_data) >= 0)
7979     {
7980       if (gtk_tree_drag_dest_drag_data_received (GTK_TREE_DRAG_DEST (model),
7981                                                  dest_row,
7982                                                  selection_data))
7983         accepted = TRUE;
7984     }
7985
7986   gtk_drag_finish (context,
7987                    accepted,
7988                    (gdk_drag_context_get_selected_action (context) == GDK_ACTION_MOVE),
7989                    time);
7990
7991   if (gtk_tree_path_get_depth (dest_row) == 1
7992       && gtk_tree_path_get_indices (dest_row)[0] == 0)
7993     {
7994       /* special special case drag to "0", scroll to first item */
7995       if (!tree_view->priv->scroll_to_path)
7996         gtk_tree_view_scroll_to_cell (tree_view, dest_row, NULL, FALSE, 0.0, 0.0);
7997     }
7998
7999   gtk_tree_path_free (dest_row);
8000
8001   /* drop dest_row */
8002   set_dest_row (context, NULL, NULL, FALSE, FALSE, FALSE);
8003 }
8004
8005
8006
8007 /* GtkContainer Methods
8008  */
8009
8010
8011 static void
8012 gtk_tree_view_remove (GtkContainer *container,
8013                       GtkWidget    *widget)
8014 {
8015   GtkTreeView *tree_view = GTK_TREE_VIEW (container);
8016   GtkTreeViewChild *child = NULL;
8017   GList *tmp_list;
8018
8019   tmp_list = tree_view->priv->children;
8020   while (tmp_list)
8021     {
8022       child = tmp_list->data;
8023       if (child->widget == widget)
8024         {
8025           gtk_widget_unparent (widget);
8026
8027           tree_view->priv->children = g_list_remove_link (tree_view->priv->children, tmp_list);
8028           g_list_free_1 (tmp_list);
8029           g_slice_free (GtkTreeViewChild, child);
8030           return;
8031         }
8032
8033       tmp_list = tmp_list->next;
8034     }
8035
8036   tmp_list = tree_view->priv->columns;
8037
8038   while (tmp_list)
8039     {
8040       GtkTreeViewColumn *column;
8041       GtkWidget         *button;
8042
8043       column = tmp_list->data;
8044       button = gtk_tree_view_column_get_button (column);
8045
8046       if (button == widget)
8047         {
8048           gtk_widget_unparent (widget);
8049           return;
8050         }
8051       tmp_list = tmp_list->next;
8052     }
8053 }
8054
8055 static void
8056 gtk_tree_view_forall (GtkContainer *container,
8057                       gboolean      include_internals,
8058                       GtkCallback   callback,
8059                       gpointer      callback_data)
8060 {
8061   GtkTreeView *tree_view = GTK_TREE_VIEW (container);
8062   GtkTreeViewChild *child = NULL;
8063   GtkTreeViewColumn *column;
8064   GtkWidget *button;
8065   GList *tmp_list;
8066
8067   tmp_list = tree_view->priv->children;
8068   while (tmp_list)
8069     {
8070       child = tmp_list->data;
8071       tmp_list = tmp_list->next;
8072
8073       (* callback) (child->widget, callback_data);
8074     }
8075   if (include_internals == FALSE)
8076     return;
8077
8078   for (tmp_list = tree_view->priv->columns; tmp_list; tmp_list = tmp_list->next)
8079     {
8080       column = tmp_list->data;
8081       button = gtk_tree_view_column_get_button (column);
8082
8083       if (button)
8084         (* callback) (button, callback_data);
8085     }
8086 }
8087
8088 /* Returns TRUE is any of the columns contains a cell that can-focus.
8089  * If this is not the case, a column-spanning focus rectangle will be
8090  * drawn.
8091  */
8092 static gboolean
8093 gtk_tree_view_has_can_focus_cell (GtkTreeView *tree_view)
8094 {
8095   GList *list;
8096
8097   for (list = tree_view->priv->columns; list; list = list->next)
8098     {
8099       GtkTreeViewColumn *column = list->data;
8100
8101       if (!gtk_tree_view_column_get_visible (column))
8102         continue;
8103       if (gtk_cell_area_is_activatable (gtk_cell_layout_get_area (GTK_CELL_LAYOUT (column))))
8104         return TRUE;
8105     }
8106
8107   return FALSE;
8108 }
8109
8110 static void
8111 column_sizing_notify (GObject    *object,
8112                       GParamSpec *pspec,
8113                       gpointer    data)
8114 {
8115   GtkTreeViewColumn *c = GTK_TREE_VIEW_COLUMN (object);
8116
8117   if (gtk_tree_view_column_get_sizing (c) != GTK_TREE_VIEW_COLUMN_FIXED)
8118     /* disable fixed height mode */
8119     g_object_set (data, "fixed-height-mode", FALSE, NULL);
8120 }
8121
8122 /**
8123  * gtk_tree_view_set_fixed_height_mode:
8124  * @tree_view: a #GtkTreeView
8125  * @enable: %TRUE to enable fixed height mode
8126  *
8127  * Enables or disables the fixed height mode of @tree_view.
8128  * Fixed height mode speeds up #GtkTreeView by assuming that all
8129  * rows have the same height.
8130  * Only enable this option if all rows are the same height and all
8131  * columns are of type %GTK_TREE_VIEW_COLUMN_FIXED.
8132  *
8133  * Since: 2.6
8134  **/
8135 void
8136 gtk_tree_view_set_fixed_height_mode (GtkTreeView *tree_view,
8137                                      gboolean     enable)
8138 {
8139   GList *l;
8140
8141   enable = enable != FALSE;
8142
8143   if (enable == tree_view->priv->fixed_height_mode)
8144     return;
8145
8146   if (!enable)
8147     {
8148       tree_view->priv->fixed_height_mode = 0;
8149       tree_view->priv->fixed_height = -1;
8150
8151       /* force a revalidation */
8152       install_presize_handler (tree_view);
8153     }
8154   else
8155     {
8156       /* make sure all columns are of type FIXED */
8157       for (l = tree_view->priv->columns; l; l = l->next)
8158         {
8159           GtkTreeViewColumn *c = l->data;
8160
8161           g_return_if_fail (gtk_tree_view_column_get_sizing (c) == GTK_TREE_VIEW_COLUMN_FIXED);
8162         }
8163
8164       /* yes, we really have to do this is in a separate loop */
8165       for (l = tree_view->priv->columns; l; l = l->next)
8166         g_signal_connect (l->data, "notify::sizing",
8167                           G_CALLBACK (column_sizing_notify), tree_view);
8168
8169       tree_view->priv->fixed_height_mode = 1;
8170       tree_view->priv->fixed_height = -1;
8171
8172       if (tree_view->priv->tree)
8173         initialize_fixed_height_mode (tree_view);
8174     }
8175
8176   g_object_notify (G_OBJECT (tree_view), "fixed-height-mode");
8177 }
8178
8179 /**
8180  * gtk_tree_view_get_fixed_height_mode:
8181  * @tree_view: a #GtkTreeView
8182  *
8183  * Returns whether fixed height mode is turned on for @tree_view.
8184  *
8185  * Return value: %TRUE if @tree_view is in fixed height mode
8186  *
8187  * Since: 2.6
8188  **/
8189 gboolean
8190 gtk_tree_view_get_fixed_height_mode (GtkTreeView *tree_view)
8191 {
8192   return tree_view->priv->fixed_height_mode;
8193 }
8194
8195 /* Returns TRUE if the focus is within the headers, after the focus operation is
8196  * done
8197  */
8198 static gboolean
8199 gtk_tree_view_header_focus (GtkTreeView      *tree_view,
8200                             GtkDirectionType  dir,
8201                             gboolean          clamp_column_visible)
8202 {
8203   GtkTreeViewColumn *column;
8204   GtkWidget *focus_child;
8205   GtkWidget *button;
8206   GList *last_column, *first_column;
8207   GList *tmp_list;
8208   gboolean rtl;
8209
8210   if (! tree_view->priv->headers_visible)
8211     return FALSE;
8212
8213   focus_child = gtk_container_get_focus_child (GTK_CONTAINER (tree_view));
8214
8215   first_column = tree_view->priv->columns;
8216   while (first_column)
8217     {
8218       column = GTK_TREE_VIEW_COLUMN (first_column->data);
8219       button = gtk_tree_view_column_get_button (column);
8220
8221       if (gtk_widget_get_can_focus (button) &&
8222           gtk_tree_view_column_get_visible (column) &&
8223           (gtk_tree_view_column_get_clickable (column) ||
8224            gtk_tree_view_column_get_reorderable (column)))
8225         break;
8226       first_column = first_column->next;
8227     }
8228
8229   /* No headers are visible, or are focusable.  We can't focus in or out.
8230    */
8231   if (first_column == NULL)
8232     return FALSE;
8233
8234   last_column = g_list_last (tree_view->priv->columns);
8235   while (last_column)
8236     {
8237       column = GTK_TREE_VIEW_COLUMN (last_column->data);
8238       button = gtk_tree_view_column_get_button (column);
8239
8240       if (gtk_widget_get_can_focus (button) &&
8241           gtk_tree_view_column_get_visible (column) &&
8242           (gtk_tree_view_column_get_clickable (column) ||
8243            gtk_tree_view_column_get_reorderable (column)))
8244         break;
8245       last_column = last_column->prev;
8246     }
8247
8248
8249   rtl = (gtk_widget_get_direction (GTK_WIDGET (tree_view)) == GTK_TEXT_DIR_RTL);
8250
8251   switch (dir)
8252     {
8253     case GTK_DIR_TAB_BACKWARD:
8254     case GTK_DIR_TAB_FORWARD:
8255     case GTK_DIR_UP:
8256     case GTK_DIR_DOWN:
8257       if (focus_child == NULL)
8258         {
8259           if (tree_view->priv->focus_column != NULL)
8260             button = gtk_tree_view_column_get_button (tree_view->priv->focus_column);
8261           else
8262             button = NULL;
8263
8264           if (button && gtk_widget_get_can_focus (button))
8265             focus_child = button;
8266           else
8267             focus_child = gtk_tree_view_column_get_button (GTK_TREE_VIEW_COLUMN (first_column->data));
8268
8269           gtk_widget_grab_focus (focus_child);
8270           break;
8271         }
8272       return FALSE;
8273
8274     case GTK_DIR_LEFT:
8275     case GTK_DIR_RIGHT:
8276       if (focus_child == NULL)
8277         {
8278           if (tree_view->priv->focus_column != NULL)
8279             focus_child = gtk_tree_view_column_get_button (tree_view->priv->focus_column);
8280           else if (dir == GTK_DIR_LEFT)
8281             focus_child = gtk_tree_view_column_get_button (GTK_TREE_VIEW_COLUMN (last_column->data));
8282           else
8283             focus_child = gtk_tree_view_column_get_button (GTK_TREE_VIEW_COLUMN (first_column->data));
8284
8285           gtk_widget_grab_focus (focus_child);
8286           break;
8287         }
8288
8289       if (gtk_widget_child_focus (focus_child, dir))
8290         {
8291           /* The focus moves inside the button. */
8292           /* This is probably a great example of bad UI */
8293           break;
8294         }
8295
8296       /* We need to move the focus among the row of buttons. */
8297       for (tmp_list = tree_view->priv->columns; tmp_list; tmp_list = tmp_list->next)
8298         if (gtk_tree_view_column_get_button (GTK_TREE_VIEW_COLUMN (tmp_list->data)) == focus_child)
8299           break;
8300
8301       if ((tmp_list == first_column && dir == (rtl ? GTK_DIR_RIGHT : GTK_DIR_LEFT))
8302           || (tmp_list == last_column && dir == (rtl ? GTK_DIR_LEFT : GTK_DIR_RIGHT)))
8303         {
8304           gtk_widget_error_bell (GTK_WIDGET (tree_view));
8305           break;
8306         }
8307
8308       while (tmp_list)
8309         {
8310           GtkTreeViewColumn *column;
8311           GtkWidget         *button;
8312
8313           if (dir == (rtl ? GTK_DIR_LEFT : GTK_DIR_RIGHT))
8314             tmp_list = tmp_list->next;
8315           else
8316             tmp_list = tmp_list->prev;
8317
8318           if (tmp_list == NULL)
8319             {
8320               g_warning ("Internal button not found");
8321               break;
8322             }
8323           column = tmp_list->data;
8324           button = gtk_tree_view_column_get_button (column);
8325           if (button &&
8326               gtk_tree_view_column_get_visible (column) &&
8327               gtk_widget_get_can_focus (button))
8328             {
8329               focus_child = button;
8330               gtk_widget_grab_focus (button);
8331               break;
8332             }
8333         }
8334       break;
8335     default:
8336       g_assert_not_reached ();
8337       break;
8338     }
8339
8340   /* if focus child is non-null, we assume it's been set to the current focus child
8341    */
8342   if (focus_child)
8343     {
8344       for (tmp_list = tree_view->priv->columns; tmp_list; tmp_list = tmp_list->next)
8345         if (gtk_tree_view_column_get_button (GTK_TREE_VIEW_COLUMN (tmp_list->data)) == focus_child)
8346           {
8347             tree_view->priv->focus_column = GTK_TREE_VIEW_COLUMN (tmp_list->data);
8348             break;
8349           }
8350
8351       if (clamp_column_visible)
8352         {
8353           gtk_tree_view_clamp_column_visible (tree_view,
8354                                               tree_view->priv->focus_column,
8355                                               FALSE);
8356         }
8357     }
8358
8359   return (focus_child != NULL);
8360 }
8361
8362 /* This function returns in 'path' the first focusable path, if the given path
8363  * is already focusable, it's the returned one.
8364  */
8365 static gboolean
8366 search_first_focusable_path (GtkTreeView  *tree_view,
8367                              GtkTreePath **path,
8368                              gboolean      search_forward,
8369                              GtkRBTree   **new_tree,
8370                              GtkRBNode   **new_node)
8371 {
8372   GtkRBTree *tree = NULL;
8373   GtkRBNode *node = NULL;
8374
8375   if (!path || !*path)
8376     return FALSE;
8377
8378   _gtk_tree_view_find_node (tree_view, *path, &tree, &node);
8379
8380   if (!tree || !node)
8381     return FALSE;
8382
8383   while (node && row_is_separator (tree_view, NULL, *path))
8384     {
8385       if (search_forward)
8386         _gtk_rbtree_next_full (tree, node, &tree, &node);
8387       else
8388         _gtk_rbtree_prev_full (tree, node, &tree, &node);
8389
8390       if (*path)
8391         gtk_tree_path_free (*path);
8392
8393       if (node)
8394         *path = _gtk_tree_view_find_path (tree_view, tree, node);
8395       else
8396         *path = NULL;
8397     }
8398
8399   if (new_tree)
8400     *new_tree = tree;
8401
8402   if (new_node)
8403     *new_node = node;
8404
8405   return (*path != NULL);
8406 }
8407
8408 static gint
8409 gtk_tree_view_focus (GtkWidget        *widget,
8410                      GtkDirectionType  direction)
8411 {
8412   GtkTreeView *tree_view = GTK_TREE_VIEW (widget);
8413   GtkContainer *container = GTK_CONTAINER (widget);
8414   GtkWidget *focus_child;
8415
8416   if (!gtk_widget_is_sensitive (widget) || !gtk_widget_get_can_focus (widget))
8417     return FALSE;
8418
8419   focus_child = gtk_container_get_focus_child (container);
8420
8421   gtk_tree_view_stop_editing (GTK_TREE_VIEW (widget), FALSE);
8422   /* Case 1.  Headers currently have focus. */
8423   if (focus_child)
8424     {
8425       switch (direction)
8426         {
8427         case GTK_DIR_LEFT:
8428         case GTK_DIR_RIGHT:
8429           gtk_tree_view_header_focus (tree_view, direction, TRUE);
8430           return TRUE;
8431         case GTK_DIR_TAB_BACKWARD:
8432         case GTK_DIR_UP:
8433           return FALSE;
8434         case GTK_DIR_TAB_FORWARD:
8435         case GTK_DIR_DOWN:
8436           gtk_widget_grab_focus (widget);
8437           return TRUE;
8438         default:
8439           g_assert_not_reached ();
8440           return FALSE;
8441         }
8442     }
8443
8444   /* Case 2. We don't have focus at all. */
8445   if (!gtk_widget_has_focus (widget))
8446     {
8447       gtk_widget_grab_focus (widget);
8448       return TRUE;
8449     }
8450
8451   /* Case 3. We have focus already. */
8452   if (direction == GTK_DIR_TAB_BACKWARD)
8453     return (gtk_tree_view_header_focus (tree_view, direction, FALSE));
8454   else if (direction == GTK_DIR_TAB_FORWARD)
8455     return FALSE;
8456
8457   /* Other directions caught by the keybindings */
8458   gtk_widget_grab_focus (widget);
8459   return TRUE;
8460 }
8461
8462 static void
8463 gtk_tree_view_grab_focus (GtkWidget *widget)
8464 {
8465   GTK_WIDGET_CLASS (gtk_tree_view_parent_class)->grab_focus (widget);
8466
8467   gtk_tree_view_focus_to_cursor (GTK_TREE_VIEW (widget));
8468 }
8469
8470 static void
8471 gtk_tree_view_style_updated (GtkWidget *widget)
8472 {
8473   GtkTreeView *tree_view = GTK_TREE_VIEW (widget);
8474   GList *list;
8475   GtkTreeViewColumn *column;
8476
8477   GTK_WIDGET_CLASS (gtk_tree_view_parent_class)->style_updated (widget);
8478
8479   if (gtk_widget_get_realized (widget))
8480     {
8481       gtk_tree_view_ensure_background (tree_view);
8482
8483       gtk_tree_view_set_grid_lines (tree_view, tree_view->priv->grid_lines);
8484       gtk_tree_view_set_enable_tree_lines (tree_view, tree_view->priv->tree_lines_enabled);
8485     }
8486
8487   gtk_widget_style_get (widget,
8488                         "expander-size", &tree_view->priv->expander_size,
8489                         NULL);
8490   tree_view->priv->expander_size += EXPANDER_EXTRA_PADDING;
8491
8492   for (list = tree_view->priv->columns; list; list = list->next)
8493     {
8494       column = list->data;
8495       _gtk_tree_view_column_cell_set_dirty (column, TRUE);
8496     }
8497
8498   tree_view->priv->fixed_height = -1;
8499   _gtk_rbtree_mark_invalid (tree_view->priv->tree);
8500
8501   gtk_widget_queue_resize (widget);
8502 }
8503
8504
8505 static void
8506 gtk_tree_view_set_focus_child (GtkContainer *container,
8507                                GtkWidget    *child)
8508 {
8509   GtkTreeView *tree_view = GTK_TREE_VIEW (container);
8510   GList *list;
8511
8512   for (list = tree_view->priv->columns; list; list = list->next)
8513     {
8514       if (gtk_tree_view_column_get_button (GTK_TREE_VIEW_COLUMN (list->data)) == child)
8515         {
8516           tree_view->priv->focus_column = GTK_TREE_VIEW_COLUMN (list->data);
8517           break;
8518         }
8519     }
8520
8521   GTK_CONTAINER_CLASS (gtk_tree_view_parent_class)->set_focus_child (container, child);
8522 }
8523
8524 static GtkWidgetPath *
8525 gtk_tree_view_get_path_for_child (GtkContainer *container,
8526                                   GtkWidget    *child)
8527 {
8528   GtkTreeView *tree_view = GTK_TREE_VIEW (container);
8529   GtkWidgetPath *path;
8530   gboolean rtl;
8531   GList *list;
8532   gint n_col = 0;
8533
8534   path = GTK_CONTAINER_CLASS (gtk_tree_view_parent_class)->get_path_for_child (container, child);
8535   rtl = (gtk_widget_get_direction (GTK_WIDGET (container)) == GTK_TEXT_DIR_RTL);
8536
8537   for (list = (rtl ? g_list_last (tree_view->priv->columns) : g_list_first (tree_view->priv->columns));
8538        list;
8539        list = (rtl ? list->prev : list->next))
8540     {
8541       GtkTreeViewColumn *column = list->data;
8542       GtkRegionFlags flags = 0;
8543
8544       if (!gtk_tree_view_column_get_visible (column))
8545         continue;
8546
8547       n_col++;
8548
8549       if (gtk_tree_view_column_get_widget (column) != child &&
8550           gtk_tree_view_column_get_button (column) != child)
8551         continue;
8552
8553       if ((n_col % 2) == 0)
8554         flags |= GTK_REGION_EVEN;
8555       else
8556         flags |= GTK_REGION_ODD;
8557
8558       if (n_col == 1)
8559         flags |= GTK_REGION_FIRST;
8560
8561       if ((rtl && !list->prev) ||
8562           (!rtl && !list->next))
8563         flags |= GTK_REGION_LAST;
8564
8565       gtk_widget_path_iter_add_region (path, -1, GTK_STYLE_REGION_COLUMN_HEADER, flags);
8566       break;
8567     }
8568
8569   gtk_widget_path_append_for_widget (path, child);
8570
8571   return path;
8572 }
8573
8574 static gboolean
8575 gtk_tree_view_real_move_cursor (GtkTreeView       *tree_view,
8576                                 GtkMovementStep    step,
8577                                 gint               count)
8578 {
8579   GdkModifierType state;
8580
8581   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), FALSE);
8582   g_return_val_if_fail (step == GTK_MOVEMENT_LOGICAL_POSITIONS ||
8583                         step == GTK_MOVEMENT_VISUAL_POSITIONS ||
8584                         step == GTK_MOVEMENT_DISPLAY_LINES ||
8585                         step == GTK_MOVEMENT_PAGES ||
8586                         step == GTK_MOVEMENT_BUFFER_ENDS, FALSE);
8587
8588   if (tree_view->priv->tree == NULL)
8589     return FALSE;
8590   if (!gtk_widget_has_focus (GTK_WIDGET (tree_view)))
8591     return FALSE;
8592
8593   gtk_tree_view_stop_editing (tree_view, FALSE);
8594   tree_view->priv->draw_keyfocus = TRUE;
8595   gtk_widget_grab_focus (GTK_WIDGET (tree_view));
8596
8597   if (gtk_get_current_event_state (&state))
8598     {
8599       GdkModifierType extend_mod_mask;
8600       GdkModifierType modify_mod_mask;
8601
8602       extend_mod_mask =
8603         gtk_widget_get_modifier_mask (GTK_WIDGET (tree_view),
8604                                       GDK_MODIFIER_INTENT_EXTEND_SELECTION);
8605
8606       modify_mod_mask =
8607         gtk_widget_get_modifier_mask (GTK_WIDGET (tree_view),
8608                                       GDK_MODIFIER_INTENT_MODIFY_SELECTION);
8609
8610       if ((state & modify_mod_mask) == modify_mod_mask)
8611         tree_view->priv->modify_selection_pressed = TRUE;
8612       if ((state & extend_mod_mask) == extend_mod_mask)
8613         tree_view->priv->extend_selection_pressed = TRUE;
8614     }
8615   /* else we assume not pressed */
8616
8617   switch (step)
8618     {
8619       /* currently we make no distinction.  When we go bi-di, we need to */
8620     case GTK_MOVEMENT_LOGICAL_POSITIONS:
8621     case GTK_MOVEMENT_VISUAL_POSITIONS:
8622       gtk_tree_view_move_cursor_left_right (tree_view, count);
8623       break;
8624     case GTK_MOVEMENT_DISPLAY_LINES:
8625       gtk_tree_view_move_cursor_up_down (tree_view, count);
8626       break;
8627     case GTK_MOVEMENT_PAGES:
8628       gtk_tree_view_move_cursor_page_up_down (tree_view, count);
8629       break;
8630     case GTK_MOVEMENT_BUFFER_ENDS:
8631       gtk_tree_view_move_cursor_start_end (tree_view, count);
8632       break;
8633     default:
8634       g_assert_not_reached ();
8635     }
8636
8637   tree_view->priv->modify_selection_pressed = FALSE;
8638   tree_view->priv->extend_selection_pressed = FALSE;
8639
8640   return TRUE;
8641 }
8642
8643 static void
8644 gtk_tree_view_put (GtkTreeView *tree_view,
8645                    GtkWidget   *child_widget,
8646                    /* in bin_window coordinates */
8647                    gint         x,
8648                    gint         y,
8649                    gint         width,
8650                    gint         height)
8651 {
8652   GtkTreeViewChild *child;
8653
8654   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
8655   g_return_if_fail (GTK_IS_WIDGET (child_widget));
8656
8657   child = g_slice_new (GtkTreeViewChild);
8658
8659   child->widget = child_widget;
8660   child->x = x;
8661   child->y = y;
8662   child->width = width;
8663   child->height = height;
8664
8665   tree_view->priv->children = g_list_append (tree_view->priv->children, child);
8666
8667   if (gtk_widget_get_realized (GTK_WIDGET (tree_view)))
8668     gtk_widget_set_parent_window (child->widget, tree_view->priv->bin_window);
8669
8670   gtk_widget_set_parent (child_widget, GTK_WIDGET (tree_view));
8671 }
8672
8673 void
8674 _gtk_tree_view_child_move_resize (GtkTreeView *tree_view,
8675                                   GtkWidget   *widget,
8676                                   /* in tree coordinates */
8677                                   gint         x,
8678                                   gint         y,
8679                                   gint         width,
8680                                   gint         height)
8681 {
8682   GtkTreeViewChild *child = NULL;
8683   GList *list;
8684   GdkRectangle allocation;
8685
8686   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
8687   g_return_if_fail (GTK_IS_WIDGET (widget));
8688
8689   for (list = tree_view->priv->children; list; list = list->next)
8690     {
8691       if (((GtkTreeViewChild *)list->data)->widget == widget)
8692         {
8693           child = list->data;
8694           break;
8695         }
8696     }
8697   if (child == NULL)
8698     return;
8699
8700   allocation.x = child->x = x;
8701   allocation.y = child->y = y;
8702   allocation.width = child->width = width;
8703   allocation.height = child->height = height;
8704
8705   if (gtk_widget_get_realized (widget))
8706     gtk_widget_size_allocate (widget, &allocation);
8707 }
8708
8709
8710 /* TreeModel Callbacks
8711  */
8712
8713 static void
8714 gtk_tree_view_row_changed (GtkTreeModel *model,
8715                            GtkTreePath  *path,
8716                            GtkTreeIter  *iter,
8717                            gpointer      data)
8718 {
8719   GtkTreeView *tree_view = (GtkTreeView *)data;
8720   GtkRBTree *tree;
8721   GtkRBNode *node;
8722   gboolean free_path = FALSE;
8723   GList *list;
8724   GtkTreePath *cursor_path;
8725
8726   g_return_if_fail (path != NULL || iter != NULL);
8727
8728   if (tree_view->priv->cursor != NULL)
8729     cursor_path = gtk_tree_row_reference_get_path (tree_view->priv->cursor);
8730   else
8731     cursor_path = NULL;
8732
8733   if (tree_view->priv->edited_column &&
8734       (cursor_path == NULL || gtk_tree_path_compare (cursor_path, path) == 0))
8735     gtk_tree_view_stop_editing (tree_view, TRUE);
8736
8737   if (cursor_path != NULL)
8738     gtk_tree_path_free (cursor_path);
8739
8740   if (path == NULL)
8741     {
8742       path = gtk_tree_model_get_path (model, iter);
8743       free_path = TRUE;
8744     }
8745   else if (iter == NULL)
8746     gtk_tree_model_get_iter (model, iter, path);
8747
8748   if (_gtk_tree_view_find_node (tree_view,
8749                                 path,
8750                                 &tree,
8751                                 &node))
8752     /* We aren't actually showing the node */
8753     goto done;
8754
8755   if (tree == NULL)
8756     goto done;
8757
8758   if (tree_view->priv->fixed_height_mode
8759       && tree_view->priv->fixed_height >= 0)
8760     {
8761       _gtk_rbtree_node_set_height (tree, node, tree_view->priv->fixed_height);
8762       if (gtk_widget_get_realized (GTK_WIDGET (tree_view)))
8763         gtk_tree_view_node_queue_redraw (tree_view, tree, node);
8764     }
8765   else
8766     {
8767       _gtk_rbtree_node_mark_invalid (tree, node);
8768       for (list = tree_view->priv->columns; list; list = list->next)
8769         {
8770           GtkTreeViewColumn *column;
8771
8772           column = list->data;
8773           if (!gtk_tree_view_column_get_visible (column))
8774             continue;
8775
8776           if (gtk_tree_view_column_get_sizing (column) == GTK_TREE_VIEW_COLUMN_AUTOSIZE)
8777             {
8778               _gtk_tree_view_column_cell_set_dirty (column, TRUE);
8779             }
8780         }
8781     }
8782
8783  done:
8784   if (!tree_view->priv->fixed_height_mode &&
8785       gtk_widget_get_realized (GTK_WIDGET (tree_view)))
8786     install_presize_handler (tree_view);
8787   if (free_path)
8788     gtk_tree_path_free (path);
8789 }
8790
8791 static void
8792 gtk_tree_view_row_inserted (GtkTreeModel *model,
8793                             GtkTreePath  *path,
8794                             GtkTreeIter  *iter,
8795                             gpointer      data)
8796 {
8797   GtkTreeView *tree_view = (GtkTreeView *) data;
8798   gint *indices;
8799   GtkRBTree *tree;
8800   GtkRBNode *tmpnode = NULL;
8801   gint depth;
8802   gint i = 0;
8803   gint height;
8804   gboolean free_path = FALSE;
8805   gboolean node_visible = TRUE;
8806
8807   g_return_if_fail (path != NULL || iter != NULL);
8808
8809   if (tree_view->priv->fixed_height_mode
8810       && tree_view->priv->fixed_height >= 0)
8811     height = tree_view->priv->fixed_height;
8812   else
8813     height = 0;
8814
8815   if (path == NULL)
8816     {
8817       path = gtk_tree_model_get_path (model, iter);
8818       free_path = TRUE;
8819     }
8820   else if (iter == NULL)
8821     gtk_tree_model_get_iter (model, iter, path);
8822
8823   if (tree_view->priv->tree == NULL)
8824     tree_view->priv->tree = _gtk_rbtree_new ();
8825
8826   tree = tree_view->priv->tree;
8827
8828   /* Update all row-references */
8829   gtk_tree_row_reference_inserted (G_OBJECT (data), path);
8830   depth = gtk_tree_path_get_depth (path);
8831   indices = gtk_tree_path_get_indices (path);
8832
8833   /* First, find the parent tree */
8834   while (i < depth - 1)
8835     {
8836       if (tree == NULL)
8837         {
8838           /* We aren't showing the node */
8839           node_visible = FALSE;
8840           goto done;
8841         }
8842
8843       tmpnode = _gtk_rbtree_find_count (tree, indices[i] + 1);
8844       if (tmpnode == NULL)
8845         {
8846           g_warning ("A node was inserted with a parent that's not in the tree.\n" \
8847                      "This possibly means that a GtkTreeModel inserted a child node\n" \
8848                      "before the parent was inserted.");
8849           goto done;
8850         }
8851       else if (!GTK_RBNODE_FLAG_SET (tmpnode, GTK_RBNODE_IS_PARENT))
8852         {
8853           /* FIXME enforce correct behavior on model, probably */
8854           /* In theory, the model should have emitted has_child_toggled here.  We
8855            * try to catch it anyway, just to be safe, in case the model hasn't.
8856            */
8857           GtkTreePath *tmppath = _gtk_tree_view_find_path (tree_view,
8858                                                            tree,
8859                                                            tmpnode);
8860           gtk_tree_view_row_has_child_toggled (model, tmppath, NULL, data);
8861           gtk_tree_path_free (tmppath);
8862           goto done;
8863         }
8864
8865       tree = tmpnode->children;
8866       i++;
8867     }
8868
8869   if (tree == NULL)
8870     {
8871       node_visible = FALSE;
8872       goto done;
8873     }
8874
8875   /* ref the node */
8876   gtk_tree_model_ref_node (tree_view->priv->model, iter);
8877   if (indices[depth - 1] == 0)
8878     {
8879       tmpnode = _gtk_rbtree_find_count (tree, 1);
8880       tmpnode = _gtk_rbtree_insert_before (tree, tmpnode, height, FALSE);
8881     }
8882   else
8883     {
8884       tmpnode = _gtk_rbtree_find_count (tree, indices[depth - 1]);
8885       tmpnode = _gtk_rbtree_insert_after (tree, tmpnode, height, FALSE);
8886     }
8887
8888  done:
8889   if (height > 0)
8890     {
8891       if (tree)
8892         _gtk_rbtree_node_mark_valid (tree, tmpnode);
8893
8894       if (node_visible && node_is_visible (tree_view, tree, tmpnode))
8895         gtk_widget_queue_resize (GTK_WIDGET (tree_view));
8896       else
8897         gtk_widget_queue_resize_no_redraw (GTK_WIDGET (tree_view));
8898     }
8899   else
8900     install_presize_handler (tree_view);
8901   if (free_path)
8902     gtk_tree_path_free (path);
8903 }
8904
8905 static void
8906 gtk_tree_view_row_has_child_toggled (GtkTreeModel *model,
8907                                      GtkTreePath  *path,
8908                                      GtkTreeIter  *iter,
8909                                      gpointer      data)
8910 {
8911   GtkTreeView *tree_view = (GtkTreeView *)data;
8912   GtkTreeIter real_iter;
8913   gboolean has_child;
8914   GtkRBTree *tree;
8915   GtkRBNode *node;
8916   gboolean free_path = FALSE;
8917
8918   g_return_if_fail (path != NULL || iter != NULL);
8919
8920   if (iter)
8921     real_iter = *iter;
8922
8923   if (path == NULL)
8924     {
8925       path = gtk_tree_model_get_path (model, iter);
8926       free_path = TRUE;
8927     }
8928   else if (iter == NULL)
8929     gtk_tree_model_get_iter (model, &real_iter, path);
8930
8931   if (_gtk_tree_view_find_node (tree_view,
8932                                 path,
8933                                 &tree,
8934                                 &node))
8935     /* We aren't actually showing the node */
8936     goto done;
8937
8938   if (tree == NULL)
8939     goto done;
8940
8941   has_child = gtk_tree_model_iter_has_child (model, &real_iter);
8942   /* Sanity check.
8943    */
8944   if (GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_PARENT) == has_child)
8945     goto done;
8946
8947   if (has_child)
8948     GTK_RBNODE_SET_FLAG (node, GTK_RBNODE_IS_PARENT);
8949   else
8950     GTK_RBNODE_UNSET_FLAG (node, GTK_RBNODE_IS_PARENT);
8951
8952   if (has_child && tree_view->priv->is_list)
8953     {
8954       tree_view->priv->is_list = FALSE;
8955       if (tree_view->priv->show_expanders)
8956         {
8957           GList *list;
8958
8959           for (list = tree_view->priv->columns; list; list = list->next)
8960             if (gtk_tree_view_column_get_visible (GTK_TREE_VIEW_COLUMN (list->data)))
8961               {
8962                 _gtk_tree_view_column_cell_set_dirty (GTK_TREE_VIEW_COLUMN (list->data), TRUE);
8963                 break;
8964               }
8965         }
8966       gtk_widget_queue_resize (GTK_WIDGET (tree_view));
8967     }
8968   else
8969     {
8970       _gtk_tree_view_queue_draw_node (tree_view, tree, node, NULL);
8971     }
8972
8973  done:
8974   if (free_path)
8975     gtk_tree_path_free (path);
8976 }
8977
8978 static void
8979 count_children_helper (GtkRBTree *tree,
8980                        GtkRBNode *node,
8981                        gpointer   data)
8982 {
8983   if (node->children)
8984     _gtk_rbtree_traverse (node->children, node->children->root, G_POST_ORDER, count_children_helper, data);
8985   (*((gint *)data))++;
8986 }
8987
8988 static void
8989 check_selection_helper (GtkRBTree *tree,
8990                         GtkRBNode *node,
8991                         gpointer   data)
8992 {
8993   gint *value = (gint *)data;
8994
8995   *value = GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_SELECTED);
8996
8997   if (node->children && !*value)
8998     _gtk_rbtree_traverse (node->children, node->children->root, G_POST_ORDER, check_selection_helper, data);
8999 }
9000
9001 static void
9002 gtk_tree_view_row_deleted (GtkTreeModel *model,
9003                            GtkTreePath  *path,
9004                            gpointer      data)
9005 {
9006   GtkTreeView *tree_view = (GtkTreeView *)data;
9007   GtkRBTree *tree;
9008   GtkRBNode *node;
9009   GList *list;
9010   gint selection_changed = FALSE;
9011   GtkStyleContext *context;
9012
9013   g_return_if_fail (path != NULL);
9014
9015   gtk_tree_row_reference_deleted (G_OBJECT (data), path);
9016
9017   if (_gtk_tree_view_find_node (tree_view, path, &tree, &node))
9018     return;
9019
9020   if (tree == NULL)
9021     return;
9022
9023   /* check if the selection has been changed */
9024   _gtk_rbtree_traverse (tree, node, G_POST_ORDER,
9025                         check_selection_helper, &selection_changed);
9026
9027   for (list = tree_view->priv->columns; list; list = list->next)
9028     if (gtk_tree_view_column_get_visible (GTK_TREE_VIEW_COLUMN (list->data)) &&
9029         gtk_tree_view_column_get_sizing (GTK_TREE_VIEW_COLUMN (list->data)) == GTK_TREE_VIEW_COLUMN_AUTOSIZE)
9030       _gtk_tree_view_column_cell_set_dirty ((GtkTreeViewColumn *)list->data, TRUE);
9031
9032   /* Ensure we don't have a dangling pointer to a dead node */
9033   ensure_unprelighted (tree_view);
9034
9035   /* Cancel editting if we've started */
9036   gtk_tree_view_stop_editing (tree_view, TRUE);
9037
9038   if (tree_view->priv->destroy_count_func)
9039     {
9040       gint child_count = 0;
9041       if (node->children)
9042         _gtk_rbtree_traverse (node->children, node->children->root, G_POST_ORDER, count_children_helper, &child_count);
9043       tree_view->priv->destroy_count_func (tree_view, path, child_count, tree_view->priv->destroy_count_data);
9044     }
9045
9046   if (tree->root->count == 1)
9047     {
9048       if (tree_view->priv->tree == tree)
9049         tree_view->priv->tree = NULL;
9050
9051       _gtk_tree_view_accessible_remove (tree_view, tree, NULL);
9052       _gtk_rbtree_remove (tree);
9053     }
9054   else
9055     {
9056       _gtk_tree_view_accessible_remove (tree_view, tree, node);
9057       _gtk_rbtree_remove_node (tree, node);
9058     }
9059
9060   if (! gtk_tree_row_reference_valid (tree_view->priv->top_row))
9061     {
9062       gtk_tree_row_reference_free (tree_view->priv->top_row);
9063       tree_view->priv->top_row = NULL;
9064     }
9065
9066   /* Cancel any ongoing animation happening within the row */
9067   context = gtk_widget_get_style_context (GTK_WIDGET (tree_view));
9068   gtk_style_context_cancel_animations (context, node);
9069
9070   install_scroll_sync_handler (tree_view);
9071
9072   gtk_widget_queue_resize (GTK_WIDGET (tree_view));
9073
9074   if (selection_changed)
9075     g_signal_emit_by_name (tree_view->priv->selection, "changed");
9076 }
9077
9078 static void
9079 gtk_tree_view_rows_reordered (GtkTreeModel *model,
9080                               GtkTreePath  *parent,
9081                               GtkTreeIter  *iter,
9082                               gint         *new_order,
9083                               gpointer      data)
9084 {
9085   GtkTreeView *tree_view = GTK_TREE_VIEW (data);
9086   GtkRBTree *tree;
9087   GtkRBNode *node;
9088   gint len;
9089
9090   len = gtk_tree_model_iter_n_children (model, iter);
9091
9092   if (len < 2)
9093     return;
9094
9095   gtk_tree_row_reference_reordered (G_OBJECT (data),
9096                                     parent,
9097                                     iter,
9098                                     new_order);
9099
9100   if (_gtk_tree_view_find_node (tree_view,
9101                                 parent,
9102                                 &tree,
9103                                 &node))
9104     return;
9105
9106   /* We need to special case the parent path */
9107   if (tree == NULL)
9108     tree = tree_view->priv->tree;
9109   else
9110     tree = node->children;
9111
9112   if (tree == NULL)
9113     return;
9114
9115   if (tree_view->priv->edited_column)
9116     gtk_tree_view_stop_editing (tree_view, TRUE);
9117
9118   /* we need to be unprelighted */
9119   ensure_unprelighted (tree_view);
9120
9121   _gtk_rbtree_reorder (tree, new_order, len);
9122
9123   gtk_widget_queue_draw (GTK_WIDGET (tree_view));
9124
9125   gtk_tree_view_dy_to_top_row (tree_view);
9126 }
9127
9128
9129 /* Internal tree functions
9130  */
9131
9132
9133 static void
9134 gtk_tree_view_get_background_xrange (GtkTreeView       *tree_view,
9135                                      GtkRBTree         *tree,
9136                                      GtkTreeViewColumn *column,
9137                                      gint              *x1,
9138                                      gint              *x2)
9139 {
9140   GtkTreeViewColumn *tmp_column = NULL;
9141   gint total_width;
9142   GList *list;
9143   gboolean rtl;
9144
9145   if (x1)
9146     *x1 = 0;
9147
9148   if (x2)
9149     *x2 = 0;
9150
9151   rtl = (gtk_widget_get_direction (GTK_WIDGET (tree_view)) == GTK_TEXT_DIR_RTL);
9152
9153   total_width = 0;
9154   for (list = (rtl ? g_list_last (tree_view->priv->columns) : g_list_first (tree_view->priv->columns));
9155        list;
9156        list = (rtl ? list->prev : list->next))
9157     {
9158       tmp_column = list->data;
9159
9160       if (tmp_column == column)
9161         break;
9162
9163       if (gtk_tree_view_column_get_visible (tmp_column))
9164         total_width += gtk_tree_view_column_get_width (tmp_column);
9165     }
9166
9167   if (tmp_column != column)
9168     {
9169       g_warning (G_STRLOC": passed-in column isn't in the tree");
9170       return;
9171     }
9172
9173   if (x1)
9174     *x1 = total_width;
9175
9176   if (x2)
9177     {
9178       if (gtk_tree_view_column_get_visible (column))
9179         *x2 = total_width + gtk_tree_view_column_get_width (column);
9180       else
9181         *x2 = total_width; /* width of 0 */
9182     }
9183 }
9184
9185 static void
9186 gtk_tree_view_get_arrow_xrange (GtkTreeView *tree_view,
9187                                 GtkRBTree   *tree,
9188                                 gint        *x1,
9189                                 gint        *x2)
9190 {
9191   gint x_offset = 0;
9192   GList *list;
9193   GtkTreeViewColumn *tmp_column = NULL;
9194   gint total_width;
9195   gboolean indent_expanders;
9196   gboolean rtl;
9197
9198   rtl = (gtk_widget_get_direction (GTK_WIDGET (tree_view)) == GTK_TEXT_DIR_RTL);
9199
9200   total_width = 0;
9201   for (list = (rtl ? g_list_last (tree_view->priv->columns) : g_list_first (tree_view->priv->columns));
9202        list;
9203        list = (rtl ? list->prev : list->next))
9204     {
9205       tmp_column = list->data;
9206
9207       if (gtk_tree_view_is_expander_column (tree_view, tmp_column))
9208         {
9209           if (rtl)
9210             x_offset = total_width + gtk_tree_view_column_get_width (tmp_column) - tree_view->priv->expander_size;
9211           else
9212             x_offset = total_width;
9213           break;
9214         }
9215
9216       if (gtk_tree_view_column_get_visible (tmp_column))
9217         total_width += gtk_tree_view_column_get_width (tmp_column);
9218     }
9219
9220   gtk_widget_style_get (GTK_WIDGET (tree_view),
9221                         "indent-expanders", &indent_expanders,
9222                         NULL);
9223
9224   if (indent_expanders)
9225     {
9226       if (rtl)
9227         x_offset -= tree_view->priv->expander_size * _gtk_rbtree_get_depth (tree);
9228       else
9229         x_offset += tree_view->priv->expander_size * _gtk_rbtree_get_depth (tree);
9230     }
9231
9232   *x1 = x_offset;
9233
9234   if (tmp_column &&
9235       gtk_tree_view_column_get_visible (tmp_column))
9236     /* +1 because x2 isn't included in the range. */
9237     *x2 = *x1 + tree_view->priv->expander_size + 1;
9238   else
9239     *x2 = *x1;
9240 }
9241
9242 static void
9243 gtk_tree_view_build_tree (GtkTreeView *tree_view,
9244                           GtkRBTree   *tree,
9245                           GtkTreeIter *iter,
9246                           gint         depth,
9247                           gboolean     recurse)
9248 {
9249   GtkRBNode *temp = NULL;
9250   GtkTreePath *path = NULL;
9251
9252   do
9253     {
9254       gtk_tree_model_ref_node (tree_view->priv->model, iter);
9255       temp = _gtk_rbtree_insert_after (tree, temp, 0, FALSE);
9256
9257       if (tree_view->priv->fixed_height > 0)
9258         {
9259           if (GTK_RBNODE_FLAG_SET (temp, GTK_RBNODE_INVALID))
9260             {
9261               _gtk_rbtree_node_set_height (tree, temp, tree_view->priv->fixed_height);
9262               _gtk_rbtree_node_mark_valid (tree, temp);
9263             }
9264         }
9265
9266       if (tree_view->priv->is_list)
9267         continue;
9268
9269       if (recurse)
9270         {
9271           GtkTreeIter child;
9272
9273           if (!path)
9274             path = gtk_tree_model_get_path (tree_view->priv->model, iter);
9275           else
9276             gtk_tree_path_next (path);
9277
9278           if (gtk_tree_model_iter_children (tree_view->priv->model, &child, iter))
9279             {
9280               gboolean expand;
9281
9282               g_signal_emit (tree_view, tree_view_signals[TEST_EXPAND_ROW], 0, iter, path, &expand);
9283
9284               if (gtk_tree_model_iter_has_child (tree_view->priv->model, iter)
9285                   && !expand)
9286                 {
9287                   temp->children = _gtk_rbtree_new ();
9288                   temp->children->parent_tree = tree;
9289                   temp->children->parent_node = temp;
9290                   gtk_tree_view_build_tree (tree_view, temp->children, &child, depth + 1, recurse);
9291                 }
9292             }
9293         }
9294
9295       if (gtk_tree_model_iter_has_child (tree_view->priv->model, iter))
9296         {
9297           if ((temp->flags&GTK_RBNODE_IS_PARENT) != GTK_RBNODE_IS_PARENT)
9298             temp->flags ^= GTK_RBNODE_IS_PARENT;
9299         }
9300     }
9301   while (gtk_tree_model_iter_next (tree_view->priv->model, iter));
9302
9303   if (path)
9304     gtk_tree_path_free (path);
9305 }
9306
9307 /* Make sure the node is visible vertically */
9308 static void
9309 gtk_tree_view_clamp_node_visible (GtkTreeView *tree_view,
9310                                   GtkRBTree   *tree,
9311                                   GtkRBNode   *node)
9312 {
9313   gint node_dy, height;
9314   GtkTreePath *path = NULL;
9315
9316   if (!gtk_widget_get_realized (GTK_WIDGET (tree_view)))
9317     return;
9318
9319   /* just return if the node is visible, avoiding a costly expose */
9320   node_dy = _gtk_rbtree_node_find_offset (tree, node);
9321   height = gtk_tree_view_get_row_height (tree_view, node);
9322   if (! GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_INVALID)
9323       && node_dy >= gtk_adjustment_get_value (tree_view->priv->vadjustment)
9324       && node_dy + height <= (gtk_adjustment_get_value (tree_view->priv->vadjustment)
9325                               + gtk_adjustment_get_page_size (tree_view->priv->vadjustment)))
9326     return;
9327
9328   path = _gtk_tree_view_find_path (tree_view, tree, node);
9329   if (path)
9330     {
9331       /* We process updates because we want to clear old selected items when we scroll.
9332        * if this is removed, we get a "selection streak" at the bottom. */
9333       gtk_tree_view_bin_process_updates (tree_view);
9334
9335       gtk_tree_view_scroll_to_cell (tree_view, path, NULL, FALSE, 0.0, 0.0);
9336       gtk_tree_path_free (path);
9337     }
9338 }
9339
9340 static void
9341 gtk_tree_view_clamp_column_visible (GtkTreeView       *tree_view,
9342                                     GtkTreeViewColumn *column,
9343                                     gboolean           focus_to_cell)
9344 {
9345   GtkAllocation allocation;
9346   gint x, width;
9347
9348   if (column == NULL)
9349     return;
9350
9351   gtk_widget_get_allocation (gtk_tree_view_column_get_button (column), &allocation);
9352   x = allocation.x;
9353   width = allocation.width;
9354
9355   if (width > gtk_adjustment_get_page_size (tree_view->priv->hadjustment))
9356     {
9357       /* The column is larger than the horizontal page size.  If the
9358        * column has cells which can be focussed individually, then we make
9359        * sure the cell which gets focus is fully visible (if even the
9360        * focus cell is bigger than the page size, we make sure the
9361        * left-hand side of the cell is visible).
9362        *
9363        * If the column does not have an activatable cell, we
9364        * make sure the left-hand side of the column is visible.
9365        */
9366
9367       if (focus_to_cell && gtk_tree_view_has_can_focus_cell (tree_view))
9368         {
9369           GtkCellArea *cell_area;
9370           GtkCellRenderer *focus_cell;
9371
9372           cell_area = gtk_cell_layout_get_area (GTK_CELL_LAYOUT (column));
9373           focus_cell = gtk_cell_area_get_focus_cell (cell_area);
9374
9375           if (gtk_tree_view_column_cell_get_position (column, focus_cell,
9376                                                       &x, &width))
9377             {
9378               if (width < gtk_adjustment_get_page_size (tree_view->priv->hadjustment))
9379                 {
9380                   if (gtk_adjustment_get_value (tree_view->priv->hadjustment) + gtk_adjustment_get_page_size (tree_view->priv->hadjustment) < x + width)
9381                     gtk_adjustment_set_value (tree_view->priv->hadjustment,
9382                                               x + width - gtk_adjustment_get_page_size (tree_view->priv->hadjustment));
9383                   else if (gtk_adjustment_get_value (tree_view->priv->hadjustment) > x)
9384                     gtk_adjustment_set_value (tree_view->priv->hadjustment, x);
9385                 }
9386             }
9387         }
9388
9389       gtk_adjustment_set_value (tree_view->priv->hadjustment, x);
9390     }
9391   else
9392     {
9393       if ((gtk_adjustment_get_value (tree_view->priv->hadjustment) + gtk_adjustment_get_page_size (tree_view->priv->hadjustment)) < (x + width))
9394           gtk_adjustment_set_value (tree_view->priv->hadjustment,
9395                                     x + width - gtk_adjustment_get_page_size (tree_view->priv->hadjustment));
9396       else if (gtk_adjustment_get_value (tree_view->priv->hadjustment) > x)
9397         gtk_adjustment_set_value (tree_view->priv->hadjustment, x);
9398   }
9399 }
9400
9401 /* This function could be more efficient.  I'll optimize it if profiling seems
9402  * to imply that it is important */
9403 GtkTreePath *
9404 _gtk_tree_view_find_path (GtkTreeView *tree_view,
9405                           GtkRBTree   *tree,
9406                           GtkRBNode   *node)
9407 {
9408   GtkTreePath *path;
9409   GtkRBTree *tmp_tree;
9410   GtkRBNode *tmp_node, *last;
9411   gint count;
9412
9413   path = gtk_tree_path_new ();
9414
9415   g_return_val_if_fail (node != NULL, path);
9416   g_return_val_if_fail (node != tree->nil, path);
9417
9418   count = 1 + node->left->count;
9419
9420   last = node;
9421   tmp_node = node->parent;
9422   tmp_tree = tree;
9423   while (tmp_tree)
9424     {
9425       while (tmp_node != tmp_tree->nil)
9426         {
9427           if (tmp_node->right == last)
9428             count += 1 + tmp_node->left->count;
9429           last = tmp_node;
9430           tmp_node = tmp_node->parent;
9431         }
9432       gtk_tree_path_prepend_index (path, count - 1);
9433       last = tmp_tree->parent_node;
9434       tmp_tree = tmp_tree->parent_tree;
9435       if (last)
9436         {
9437           count = 1 + last->left->count;
9438           tmp_node = last->parent;
9439         }
9440     }
9441   return path;
9442 }
9443
9444 /* Returns TRUE if we ran out of tree before finding the path.  If the path is
9445  * invalid (ie. points to a node that's not in the tree), *tree and *node are
9446  * both set to NULL.
9447  */
9448 gboolean
9449 _gtk_tree_view_find_node (GtkTreeView  *tree_view,
9450                           GtkTreePath  *path,
9451                           GtkRBTree   **tree,
9452                           GtkRBNode   **node)
9453 {
9454   GtkRBNode *tmpnode = NULL;
9455   GtkRBTree *tmptree = tree_view->priv->tree;
9456   gint *indices = gtk_tree_path_get_indices (path);
9457   gint depth = gtk_tree_path_get_depth (path);
9458   gint i = 0;
9459
9460   *node = NULL;
9461   *tree = NULL;
9462
9463   if (depth == 0 || tmptree == NULL)
9464     return FALSE;
9465   do
9466     {
9467       tmpnode = _gtk_rbtree_find_count (tmptree, indices[i] + 1);
9468       ++i;
9469       if (tmpnode == NULL)
9470         {
9471           *tree = NULL;
9472           *node = NULL;
9473           return FALSE;
9474         }
9475       if (i >= depth)
9476         {
9477           *tree = tmptree;
9478           *node = tmpnode;
9479           return FALSE;
9480         }
9481       *tree = tmptree;
9482       *node = tmpnode;
9483       tmptree = tmpnode->children;
9484       if (tmptree == NULL)
9485         return TRUE;
9486     }
9487   while (1);
9488 }
9489
9490 static gboolean
9491 gtk_tree_view_is_expander_column (GtkTreeView       *tree_view,
9492                                   GtkTreeViewColumn *column)
9493 {
9494   GList *list;
9495
9496   if (tree_view->priv->is_list)
9497     return FALSE;
9498
9499   if (tree_view->priv->expander_column != NULL)
9500     {
9501       if (tree_view->priv->expander_column == column)
9502         return TRUE;
9503       return FALSE;
9504     }
9505   else
9506     {
9507       for (list = tree_view->priv->columns;
9508            list;
9509            list = list->next)
9510         if (gtk_tree_view_column_get_visible (GTK_TREE_VIEW_COLUMN (list->data)))
9511           break;
9512       if (list && list->data == column)
9513         return TRUE;
9514     }
9515   return FALSE;
9516 }
9517
9518 static inline gboolean
9519 gtk_tree_view_draw_expanders (GtkTreeView *tree_view)
9520 {
9521   if (!tree_view->priv->is_list && tree_view->priv->show_expanders)
9522     return TRUE;
9523   /* else */
9524   return FALSE;
9525 }
9526
9527 static void
9528 gtk_tree_view_add_move_binding (GtkBindingSet  *binding_set,
9529                                 guint           keyval,
9530                                 guint           modmask,
9531                                 gboolean        add_shifted_binding,
9532                                 GtkMovementStep step,
9533                                 gint            count)
9534 {
9535
9536   gtk_binding_entry_add_signal (binding_set, keyval, modmask,
9537                                 "move-cursor", 2,
9538                                 G_TYPE_ENUM, step,
9539                                 G_TYPE_INT, count);
9540
9541   if (add_shifted_binding)
9542     gtk_binding_entry_add_signal (binding_set, keyval, GDK_SHIFT_MASK,
9543                                   "move-cursor", 2,
9544                                   G_TYPE_ENUM, step,
9545                                   G_TYPE_INT, count);
9546
9547   if ((modmask & GDK_CONTROL_MASK) == GDK_CONTROL_MASK)
9548    return;
9549
9550   gtk_binding_entry_add_signal (binding_set, keyval, GDK_CONTROL_MASK | GDK_SHIFT_MASK,
9551                                 "move-cursor", 2,
9552                                 G_TYPE_ENUM, step,
9553                                 G_TYPE_INT, count);
9554
9555   gtk_binding_entry_add_signal (binding_set, keyval, GDK_CONTROL_MASK,
9556                                 "move-cursor", 2,
9557                                 G_TYPE_ENUM, step,
9558                                 G_TYPE_INT, count);
9559 }
9560
9561 static gint
9562 gtk_tree_view_unref_tree_helper (GtkTreeModel *model,
9563                                  GtkTreeIter  *iter,
9564                                  GtkRBTree    *tree,
9565                                  GtkRBNode    *node)
9566 {
9567   gint retval = FALSE;
9568   do
9569     {
9570       g_return_val_if_fail (node != NULL, FALSE);
9571
9572       if (node->children)
9573         {
9574           GtkTreeIter child;
9575           GtkRBTree *new_tree;
9576           GtkRBNode *new_node;
9577
9578           new_tree = node->children;
9579           new_node = new_tree->root;
9580
9581           while (new_node && new_node->left != new_tree->nil)
9582             new_node = new_node->left;
9583
9584           if (!gtk_tree_model_iter_children (model, &child, iter))
9585             return FALSE;
9586
9587           retval = retval || gtk_tree_view_unref_tree_helper (model, &child, new_tree, new_node);
9588         }
9589
9590       if (GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_SELECTED))
9591         retval = TRUE;
9592       gtk_tree_model_unref_node (model, iter);
9593       node = _gtk_rbtree_next (tree, node);
9594     }
9595   while (gtk_tree_model_iter_next (model, iter));
9596
9597   return retval;
9598 }
9599
9600 static gint
9601 gtk_tree_view_unref_and_check_selection_tree (GtkTreeView *tree_view,
9602                                               GtkRBTree   *tree)
9603 {
9604   GtkTreeIter iter;
9605   GtkTreePath *path;
9606   GtkRBNode *node;
9607   gint retval;
9608
9609   if (!tree)
9610     return FALSE;
9611
9612   node = tree->root;
9613   while (node && node->left != tree->nil)
9614     node = node->left;
9615
9616   g_return_val_if_fail (node != NULL, FALSE);
9617   path = _gtk_tree_view_find_path (tree_view, tree, node);
9618   gtk_tree_model_get_iter (GTK_TREE_MODEL (tree_view->priv->model),
9619                            &iter, path);
9620   retval = gtk_tree_view_unref_tree_helper (GTK_TREE_MODEL (tree_view->priv->model), &iter, tree, node);
9621   gtk_tree_path_free (path);
9622
9623   return retval;
9624 }
9625
9626 static void
9627 gtk_tree_view_set_column_drag_info (GtkTreeView       *tree_view,
9628                                     GtkTreeViewColumn *column)
9629 {
9630   GtkTreeViewColumn *left_column;
9631   GtkTreeViewColumn *cur_column = NULL;
9632   GtkTreeViewColumnReorder *reorder;
9633   gboolean rtl;
9634   GList *tmp_list;
9635   gint left;
9636
9637   /* We want to precalculate the motion list such that we know what column slots
9638    * are available.
9639    */
9640   left_column = NULL;
9641   rtl = (gtk_widget_get_direction (GTK_WIDGET (tree_view)) == GTK_TEXT_DIR_RTL);
9642
9643   /* First, identify all possible drop spots */
9644   if (rtl)
9645     tmp_list = g_list_last (tree_view->priv->columns);
9646   else
9647     tmp_list = g_list_first (tree_view->priv->columns);
9648
9649   while (tmp_list)
9650     {
9651       cur_column = GTK_TREE_VIEW_COLUMN (tmp_list->data);
9652       tmp_list = rtl?g_list_previous (tmp_list):g_list_next (tmp_list);
9653
9654       if (gtk_tree_view_column_get_visible (cur_column) == FALSE)
9655         continue;
9656
9657       /* If it's not the column moving and func tells us to skip over the column, we continue. */
9658       if (left_column != column && cur_column != column &&
9659           tree_view->priv->column_drop_func &&
9660           ! tree_view->priv->column_drop_func (tree_view, column, left_column, cur_column, tree_view->priv->column_drop_func_data))
9661         {
9662           left_column = cur_column;
9663           continue;
9664         }
9665       reorder = g_slice_new0 (GtkTreeViewColumnReorder);
9666       reorder->left_column = left_column;
9667       left_column = reorder->right_column = cur_column;
9668
9669       tree_view->priv->column_drag_info = g_list_append (tree_view->priv->column_drag_info, reorder);
9670     }
9671
9672   /* Add the last one */
9673   if (tree_view->priv->column_drop_func == NULL ||
9674       ((left_column != column) &&
9675        tree_view->priv->column_drop_func (tree_view, column, left_column, NULL, tree_view->priv->column_drop_func_data)))
9676     {
9677       reorder = g_slice_new0 (GtkTreeViewColumnReorder);
9678       reorder->left_column = left_column;
9679       reorder->right_column = NULL;
9680       tree_view->priv->column_drag_info = g_list_append (tree_view->priv->column_drag_info, reorder);
9681     }
9682
9683   /* We quickly check to see if it even makes sense to reorder columns. */
9684   /* If there is nothing that can be moved, then we return */
9685
9686   if (tree_view->priv->column_drag_info == NULL)
9687     return;
9688
9689   /* We know there are always 2 slots possbile, as you can always return column. */
9690   /* If that's all there is, return */
9691   if (tree_view->priv->column_drag_info->next == NULL ||
9692       (tree_view->priv->column_drag_info->next->next == NULL &&
9693        ((GtkTreeViewColumnReorder *)tree_view->priv->column_drag_info->data)->right_column == column &&
9694        ((GtkTreeViewColumnReorder *)tree_view->priv->column_drag_info->next->data)->left_column == column))
9695     {
9696       for (tmp_list = tree_view->priv->column_drag_info; tmp_list; tmp_list = tmp_list->next)
9697         g_slice_free (GtkTreeViewColumnReorder, tmp_list->data);
9698       g_list_free (tree_view->priv->column_drag_info);
9699       tree_view->priv->column_drag_info = NULL;
9700       return;
9701     }
9702   /* We fill in the ranges for the columns, now that we've isolated them */
9703   left = - TREE_VIEW_COLUMN_DRAG_DEAD_MULTIPLIER (tree_view);
9704
9705   for (tmp_list = tree_view->priv->column_drag_info; tmp_list; tmp_list = tmp_list->next)
9706     {
9707       reorder = (GtkTreeViewColumnReorder *) tmp_list->data;
9708
9709       reorder->left_align = left;
9710       if (tmp_list->next != NULL)
9711         {
9712           GtkAllocation right_allocation, left_allocation;
9713           GtkWidget    *left_button, *right_button;
9714
9715           g_assert (tmp_list->next->data);
9716
9717           right_button = gtk_tree_view_column_get_button (reorder->right_column);
9718           left_button  = gtk_tree_view_column_get_button
9719             (((GtkTreeViewColumnReorder *)tmp_list->next->data)->left_column);
9720
9721           gtk_widget_get_allocation (right_button, &right_allocation);
9722           gtk_widget_get_allocation (left_button, &left_allocation);
9723           left = reorder->right_align = (right_allocation.x + right_allocation.width + left_allocation.x) / 2;
9724         }
9725       else
9726         {
9727           reorder->right_align = gdk_window_get_width (tree_view->priv->header_window)
9728                                  + TREE_VIEW_COLUMN_DRAG_DEAD_MULTIPLIER (tree_view);
9729         }
9730     }
9731 }
9732
9733 void
9734 _gtk_tree_view_column_start_drag (GtkTreeView       *tree_view,
9735                                   GtkTreeViewColumn *column,
9736                                   GdkDevice         *device)
9737 {
9738   GdkEvent *send_event;
9739   GtkAllocation allocation;
9740   GtkAllocation button_allocation;
9741   GdkScreen *screen = gtk_widget_get_screen (GTK_WIDGET (tree_view));
9742   GtkWidget *button;
9743   GdkDevice *pointer, *keyboard;
9744
9745   g_return_if_fail (tree_view->priv->column_drag_info == NULL);
9746   g_return_if_fail (tree_view->priv->cur_reorder == NULL);
9747
9748   gtk_tree_view_set_column_drag_info (tree_view, column);
9749
9750   if (tree_view->priv->column_drag_info == NULL)
9751     return;
9752
9753   button = gtk_tree_view_column_get_button (column);
9754
9755   if (tree_view->priv->drag_window == NULL)
9756     {
9757       GdkWindowAttr attributes;
9758       guint attributes_mask;
9759
9760       gtk_widget_get_allocation (button, &button_allocation);
9761
9762       attributes.window_type = GDK_WINDOW_CHILD;
9763       attributes.wclass = GDK_INPUT_OUTPUT;
9764       attributes.x = button_allocation.x;
9765       attributes.y = 0;
9766       attributes.width = button_allocation.width;
9767       attributes.height = button_allocation.height;
9768       attributes.visual = gtk_widget_get_visual (GTK_WIDGET (tree_view));
9769       attributes.event_mask = GDK_VISIBILITY_NOTIFY_MASK | GDK_EXPOSURE_MASK | GDK_POINTER_MOTION_MASK;
9770       attributes_mask = GDK_WA_X | GDK_WA_Y | GDK_WA_VISUAL;
9771
9772       tree_view->priv->drag_window = gdk_window_new (tree_view->priv->bin_window,
9773                                                      &attributes,
9774                                                      attributes_mask);
9775       gdk_window_set_user_data (tree_view->priv->drag_window, GTK_WIDGET (tree_view));
9776     }
9777
9778   if (gdk_device_get_source (device) == GDK_SOURCE_KEYBOARD)
9779     {
9780       keyboard = device;
9781       pointer = gdk_device_get_associated_device (device);
9782     }
9783   else
9784     {
9785       pointer = device;
9786       keyboard = gdk_device_get_associated_device (device);
9787     }
9788
9789   gdk_device_ungrab (pointer, GDK_CURRENT_TIME);
9790   gdk_device_ungrab (keyboard, GDK_CURRENT_TIME);
9791
9792   gtk_grab_remove (button);
9793
9794   send_event = gdk_event_new (GDK_LEAVE_NOTIFY);
9795   send_event->crossing.send_event = TRUE;
9796   send_event->crossing.window = g_object_ref (gtk_button_get_event_window (GTK_BUTTON (button)));
9797   send_event->crossing.subwindow = NULL;
9798   send_event->crossing.detail = GDK_NOTIFY_ANCESTOR;
9799   send_event->crossing.time = GDK_CURRENT_TIME;
9800   gdk_event_set_device (send_event, device);
9801
9802   gtk_propagate_event (button, send_event);
9803   gdk_event_free (send_event);
9804
9805   send_event = gdk_event_new (GDK_BUTTON_RELEASE);
9806   send_event->button.window = g_object_ref (gdk_screen_get_root_window (screen));
9807   send_event->button.send_event = TRUE;
9808   send_event->button.time = GDK_CURRENT_TIME;
9809   send_event->button.x = -1;
9810   send_event->button.y = -1;
9811   send_event->button.axes = NULL;
9812   send_event->button.state = 0;
9813   send_event->button.button = 1;
9814   send_event->button.x_root = 0;
9815   send_event->button.y_root = 0;
9816   gdk_event_set_device (send_event, device);
9817
9818   gtk_propagate_event (button, send_event);
9819   gdk_event_free (send_event);
9820
9821   /* Kids, don't try this at home */
9822   g_object_ref (button);
9823   gtk_container_remove (GTK_CONTAINER (tree_view), button);
9824   gtk_widget_set_parent_window (button, tree_view->priv->drag_window);
9825   gtk_widget_set_parent (button, GTK_WIDGET (tree_view));
9826   g_object_unref (button);
9827
9828   gtk_widget_get_allocation (button, &button_allocation);
9829   tree_view->priv->drag_column_x = button_allocation.x;
9830   allocation = button_allocation;
9831   allocation.x = 0;
9832   gtk_widget_size_allocate (button, &allocation);
9833   gtk_widget_set_parent_window (button, tree_view->priv->drag_window);
9834
9835   tree_view->priv->drag_column = column;
9836   gdk_window_show (tree_view->priv->drag_window);
9837
9838   gtk_widget_grab_focus (GTK_WIDGET (tree_view));
9839   while (gtk_events_pending ())
9840     gtk_main_iteration ();
9841
9842   tree_view->priv->in_column_drag = TRUE;
9843
9844   gdk_device_grab (pointer,
9845                    tree_view->priv->drag_window,
9846                    GDK_OWNERSHIP_NONE,
9847                    FALSE,
9848                    GDK_POINTER_MOTION_MASK|GDK_BUTTON_RELEASE_MASK,
9849                    NULL,
9850                    GDK_CURRENT_TIME);
9851   gdk_device_grab (keyboard,
9852                    tree_view->priv->drag_window,
9853                    GDK_OWNERSHIP_NONE,
9854                    FALSE,
9855                    GDK_KEY_PRESS_MASK|GDK_KEY_RELEASE_MASK,
9856                    NULL,
9857                    GDK_CURRENT_TIME);
9858 }
9859
9860 static void
9861 gtk_tree_view_queue_draw_arrow (GtkTreeView        *tree_view,
9862                                 GtkRBTree          *tree,
9863                                 GtkRBNode          *node)
9864 {
9865   GtkAllocation allocation;
9866   GdkRectangle rect;
9867
9868   if (!gtk_widget_get_realized (GTK_WIDGET (tree_view)))
9869     return;
9870
9871   gtk_widget_get_allocation (GTK_WIDGET (tree_view), &allocation);
9872   rect.x = 0;
9873   rect.width = MAX (tree_view->priv->expander_size, MAX (tree_view->priv->width, allocation.width));
9874
9875   rect.y = gtk_tree_view_get_row_y_offset (tree_view, tree, node);
9876   rect.height = gtk_tree_view_get_row_height (tree_view, node);
9877
9878   gdk_window_invalidate_rect (tree_view->priv->bin_window, &rect, TRUE);
9879 }
9880
9881 void
9882 _gtk_tree_view_queue_draw_node (GtkTreeView        *tree_view,
9883                                 GtkRBTree          *tree,
9884                                 GtkRBNode          *node,
9885                                 const GdkRectangle *clip_rect)
9886 {
9887   GtkAllocation allocation;
9888   GdkRectangle rect;
9889
9890   if (!gtk_widget_get_realized (GTK_WIDGET (tree_view)))
9891     return;
9892
9893   gtk_widget_get_allocation (GTK_WIDGET (tree_view), &allocation);
9894   rect.x = 0;
9895   rect.width = MAX (tree_view->priv->width, allocation.width);
9896
9897   rect.y = gtk_tree_view_get_row_y_offset (tree_view, tree, node);
9898   rect.height = gtk_tree_view_get_row_height (tree_view, node);
9899
9900   if (clip_rect)
9901     {
9902       GdkRectangle new_rect;
9903
9904       gdk_rectangle_intersect (clip_rect, &rect, &new_rect);
9905
9906       gdk_window_invalidate_rect (tree_view->priv->bin_window, &new_rect, TRUE);
9907     }
9908   else
9909     {
9910       gdk_window_invalidate_rect (tree_view->priv->bin_window, &rect, TRUE);
9911     }
9912 }
9913
9914 static inline gint
9915 gtk_tree_view_get_effective_header_height (GtkTreeView *tree_view)
9916 {
9917   if (tree_view->priv->headers_visible)
9918     return tree_view->priv->header_height;
9919   /* else */
9920   return 0;
9921 }
9922
9923 gint
9924 _gtk_tree_view_get_header_height (GtkTreeView *tree_view)
9925 {
9926   return tree_view->priv->header_height;
9927 }
9928
9929 void
9930 _gtk_tree_view_get_row_separator_func (GtkTreeView                 *tree_view,
9931                                        GtkTreeViewRowSeparatorFunc *func,
9932                                        gpointer                    *data)
9933 {
9934   *func = tree_view->priv->row_separator_func;
9935   *data = tree_view->priv->row_separator_data;
9936 }
9937
9938 GtkTreePath *
9939 _gtk_tree_view_get_anchor_path (GtkTreeView *tree_view)
9940 {
9941   if (tree_view->priv->anchor)
9942     return gtk_tree_row_reference_get_path (tree_view->priv->anchor);
9943
9944   return NULL;
9945 }
9946
9947 void
9948 _gtk_tree_view_set_anchor_path (GtkTreeView *tree_view,
9949                                 GtkTreePath *anchor_path)
9950 {
9951   if (tree_view->priv->anchor)
9952     {
9953       gtk_tree_row_reference_free (tree_view->priv->anchor);
9954       tree_view->priv->anchor = NULL;
9955     }
9956
9957   if (anchor_path && tree_view->priv->model)
9958     tree_view->priv->anchor =
9959       gtk_tree_row_reference_new_proxy (G_OBJECT (tree_view),
9960                                         tree_view->priv->model, anchor_path);
9961 }
9962
9963 GtkRBTree *
9964 _gtk_tree_view_get_rbtree (GtkTreeView *tree_view)
9965 {
9966   return tree_view->priv->tree;
9967 }
9968
9969 GdkWindow *
9970 _gtk_tree_view_get_header_window (GtkTreeView *tree_view)
9971 {
9972   return tree_view->priv->header_window;
9973 }
9974
9975 void
9976 _gtk_tree_view_set_focus_column (GtkTreeView       *tree_view,
9977                                  GtkTreeViewColumn *column)
9978 {
9979   tree_view->priv->focus_column = column;
9980 }
9981
9982
9983 static void
9984 gtk_tree_view_queue_draw_path (GtkTreeView        *tree_view,
9985                                GtkTreePath        *path,
9986                                const GdkRectangle *clip_rect)
9987 {
9988   GtkRBTree *tree = NULL;
9989   GtkRBNode *node = NULL;
9990
9991   _gtk_tree_view_find_node (tree_view, path, &tree, &node);
9992
9993   if (tree)
9994     _gtk_tree_view_queue_draw_node (tree_view, tree, node, clip_rect);
9995 }
9996
9997 /* x and y are the mouse position
9998  */
9999 static void
10000 gtk_tree_view_draw_arrow (GtkTreeView *tree_view,
10001                           cairo_t     *cr,
10002                           GtkRBTree   *tree,
10003                           GtkRBNode   *node)
10004 {
10005   GdkRectangle area;
10006   GtkStateFlags state = 0;
10007   GtkStyleContext *context;
10008   GtkWidget *widget;
10009   gint x_offset = 0;
10010   gint x2;
10011   gint vertical_separator;
10012   gint expander_size;
10013   GtkCellRendererState flags;
10014
10015   widget = GTK_WIDGET (tree_view);
10016   context = gtk_widget_get_style_context (widget);
10017
10018   gtk_widget_style_get (widget,
10019                         "vertical-separator", &vertical_separator,
10020                         NULL);
10021   expander_size = tree_view->priv->expander_size - EXPANDER_EXTRA_PADDING;
10022
10023   if (! GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_PARENT))
10024     return;
10025
10026   gtk_tree_view_get_arrow_xrange (tree_view, tree, &x_offset, &x2);
10027
10028   area.x = x_offset;
10029   area.y = gtk_tree_view_get_cell_area_y_offset (tree_view, tree, node,
10030                                                  vertical_separator);
10031   area.width = expander_size;
10032   area.height = gtk_tree_view_get_cell_area_height (tree_view, node,
10033                                                     vertical_separator);
10034
10035   if (!gtk_widget_get_sensitive (widget))
10036     state |= GTK_STATE_FLAG_INSENSITIVE;
10037   else
10038     {
10039       flags = 0;
10040
10041       if (GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_SELECTED))
10042         flags |= GTK_CELL_RENDERER_SELECTED;
10043
10044       state = gtk_cell_renderer_get_state (NULL, widget, flags);
10045
10046       if (node == tree_view->priv->prelight_node &&
10047           tree_view->priv->arrow_prelit)
10048         state |= GTK_STATE_FLAG_PRELIGHT;
10049     }
10050
10051   if (node->children != NULL)
10052     state |= GTK_STATE_FLAG_ACTIVE;
10053
10054   gtk_style_context_save (context);
10055
10056   gtk_style_context_set_state (context, state);
10057   gtk_style_context_add_class (context, GTK_STYLE_CLASS_EXPANDER);
10058
10059   gtk_style_context_push_animatable_region (context, node);
10060
10061   gtk_render_expander (context, cr,
10062                        area.x, area.y,
10063                        area.width, area.height);
10064
10065   gtk_style_context_pop_animatable_region (context);
10066   gtk_style_context_restore (context);
10067 }
10068
10069 static void
10070 gtk_tree_view_focus_to_cursor (GtkTreeView *tree_view)
10071
10072 {
10073   GtkTreePath *cursor_path;
10074
10075   if ((tree_view->priv->tree == NULL) ||
10076       (! gtk_widget_get_realized (GTK_WIDGET (tree_view))))
10077     return;
10078
10079   cursor_path = NULL;
10080   if (tree_view->priv->cursor)
10081     cursor_path = gtk_tree_row_reference_get_path (tree_view->priv->cursor);
10082
10083   if (cursor_path == NULL)
10084     {
10085       /* Consult the selection before defaulting to the
10086        * first focusable element
10087        */
10088       GList *selected_rows;
10089       GtkTreeModel *model;
10090       GtkTreeSelection *selection;
10091
10092       selection = gtk_tree_view_get_selection (tree_view);
10093       selected_rows = gtk_tree_selection_get_selected_rows (selection, &model);
10094
10095       if (selected_rows)
10096         {
10097           cursor_path = gtk_tree_path_copy((const GtkTreePath *)(selected_rows->data));
10098           g_list_foreach (selected_rows, (GFunc)gtk_tree_path_free, NULL);
10099           g_list_free (selected_rows);
10100         }
10101       else
10102         {
10103           cursor_path = gtk_tree_path_new_first ();
10104           search_first_focusable_path (tree_view, &cursor_path,
10105                                        TRUE, NULL, NULL);
10106         }
10107
10108       gtk_tree_row_reference_free (tree_view->priv->cursor);
10109       tree_view->priv->cursor = NULL;
10110
10111       if (cursor_path)
10112         {
10113           if (gtk_tree_selection_get_mode (tree_view->priv->selection) == GTK_SELECTION_MULTIPLE)
10114             gtk_tree_view_real_set_cursor (tree_view, cursor_path, FALSE, FALSE);
10115           else
10116             gtk_tree_view_real_set_cursor (tree_view, cursor_path, TRUE, FALSE);
10117         }
10118     }
10119
10120   if (cursor_path)
10121     {
10122       tree_view->priv->draw_keyfocus = TRUE;
10123
10124       gtk_tree_view_queue_draw_path (tree_view, cursor_path, NULL);
10125       gtk_tree_path_free (cursor_path);
10126
10127       if (tree_view->priv->focus_column == NULL)
10128         {
10129           GList *list;
10130           for (list = tree_view->priv->columns; list; list = list->next)
10131             {
10132               if (gtk_tree_view_column_get_visible (GTK_TREE_VIEW_COLUMN (list->data)))
10133                 {
10134                   GtkCellArea *cell_area;
10135
10136                   tree_view->priv->focus_column = GTK_TREE_VIEW_COLUMN (list->data);
10137
10138                   /* This happens when the treeview initially grabs focus and there
10139                    * is no column in focus, here we explicitly focus into the first cell */
10140                   cell_area = gtk_cell_layout_get_area (GTK_CELL_LAYOUT (tree_view->priv->focus_column));
10141                   if (!gtk_cell_area_get_focus_cell (cell_area))
10142                     {
10143                       gboolean rtl;
10144
10145                       rtl = (gtk_widget_get_direction (GTK_WIDGET (tree_view)) == GTK_TEXT_DIR_RTL);
10146                       gtk_cell_area_focus (cell_area,
10147                                            rtl ? GTK_DIR_LEFT : GTK_DIR_RIGHT);
10148                     }
10149
10150                   break;
10151                 }
10152             }
10153         }
10154     }
10155 }
10156
10157 static void
10158 gtk_tree_view_move_cursor_up_down (GtkTreeView *tree_view,
10159                                    gint         count)
10160 {
10161   gint selection_count;
10162   GtkRBTree *cursor_tree = NULL;
10163   GtkRBNode *cursor_node = NULL;
10164   GtkRBTree *new_cursor_tree = NULL;
10165   GtkRBNode *new_cursor_node = NULL;
10166   GtkTreePath *cursor_path = NULL;
10167   gboolean grab_focus = TRUE;
10168   gboolean selectable;
10169   GtkDirectionType direction;
10170   GtkCellArea *cell_area = NULL;
10171   GtkCellRenderer *last_focus_cell = NULL;
10172   GtkTreeIter iter;
10173
10174   if (! gtk_widget_has_focus (GTK_WIDGET (tree_view)))
10175     return;
10176
10177   cursor_path = NULL;
10178   if (!gtk_tree_row_reference_valid (tree_view->priv->cursor))
10179     /* FIXME: we lost the cursor; should we get the first? */
10180     return;
10181
10182   cursor_path = gtk_tree_row_reference_get_path (tree_view->priv->cursor);
10183   _gtk_tree_view_find_node (tree_view, cursor_path,
10184                             &cursor_tree, &cursor_node);
10185
10186   if (cursor_tree == NULL)
10187     /* FIXME: we lost the cursor; should we get the first? */
10188     return;
10189
10190   direction = count < 0 ? GTK_DIR_UP : GTK_DIR_DOWN;
10191
10192   if (tree_view->priv->focus_column)
10193     cell_area = gtk_cell_layout_get_area (GTK_CELL_LAYOUT (tree_view->priv->focus_column));
10194
10195   /* If focus stays in the area for this row, then just return for this round */
10196   if (cell_area && (count == -1 || count == 1) &&
10197       gtk_tree_model_get_iter (tree_view->priv->model, &iter, cursor_path))
10198     {
10199       gtk_tree_view_column_cell_set_cell_data (tree_view->priv->focus_column,
10200                                                tree_view->priv->model,
10201                                                &iter,
10202                                                GTK_RBNODE_FLAG_SET (cursor_node, GTK_RBNODE_IS_PARENT),
10203                                                cursor_node->children?TRUE:FALSE);
10204
10205       /* Save the last cell that had focus, if we hit the end of the view we'll give
10206        * focus back to it. */
10207       last_focus_cell = gtk_cell_area_get_focus_cell (cell_area);
10208
10209       /* If focus stays in the area, no need to change the cursor row */
10210       if (gtk_cell_area_focus (cell_area, direction))
10211         return;
10212     }
10213
10214   selection_count = gtk_tree_selection_count_selected_rows (tree_view->priv->selection);
10215   selectable = _gtk_tree_selection_row_is_selectable (tree_view->priv->selection,
10216                                                       cursor_node,
10217                                                       cursor_path);
10218
10219   if (selection_count == 0
10220       && gtk_tree_selection_get_mode (tree_view->priv->selection) != GTK_SELECTION_NONE
10221       && !tree_view->priv->modify_selection_pressed
10222       && selectable)
10223     {
10224       /* Don't move the cursor, but just select the current node */
10225       new_cursor_tree = cursor_tree;
10226       new_cursor_node = cursor_node;
10227     }
10228   else
10229     {
10230       if (count == -1)
10231         _gtk_rbtree_prev_full (cursor_tree, cursor_node,
10232                                &new_cursor_tree, &new_cursor_node);
10233       else
10234         _gtk_rbtree_next_full (cursor_tree, cursor_node,
10235                                &new_cursor_tree, &new_cursor_node);
10236     }
10237
10238   gtk_tree_path_free (cursor_path);
10239
10240   if (new_cursor_node)
10241     {
10242       cursor_path = _gtk_tree_view_find_path (tree_view,
10243                                               new_cursor_tree, new_cursor_node);
10244
10245       search_first_focusable_path (tree_view, &cursor_path,
10246                                    (count != -1),
10247                                    &new_cursor_tree,
10248                                    &new_cursor_node);
10249
10250       if (cursor_path)
10251         gtk_tree_path_free (cursor_path);
10252     }
10253
10254   /*
10255    * If the list has only one item and multi-selection is set then select
10256    * the row (if not yet selected).
10257    */
10258   if (gtk_tree_selection_get_mode (tree_view->priv->selection) == GTK_SELECTION_MULTIPLE &&
10259       new_cursor_node == NULL)
10260     {
10261       if (count == -1)
10262         _gtk_rbtree_next_full (cursor_tree, cursor_node,
10263                                &new_cursor_tree, &new_cursor_node);
10264       else
10265         _gtk_rbtree_prev_full (cursor_tree, cursor_node,
10266                                &new_cursor_tree, &new_cursor_node);
10267
10268       if (new_cursor_node == NULL
10269           && !GTK_RBNODE_FLAG_SET (cursor_node, GTK_RBNODE_IS_SELECTED))
10270         {
10271           new_cursor_node = cursor_node;
10272           new_cursor_tree = cursor_tree;
10273         }
10274       else
10275         {
10276           new_cursor_node = NULL;
10277         }
10278     }
10279
10280   if (new_cursor_node)
10281     {
10282       cursor_path = _gtk_tree_view_find_path (tree_view, new_cursor_tree, new_cursor_node);
10283       gtk_tree_view_real_set_cursor (tree_view, cursor_path, TRUE, TRUE);
10284       gtk_tree_path_free (cursor_path);
10285
10286       /* Give focus to the area in the new row */
10287       if (cell_area)
10288         gtk_cell_area_focus (cell_area, direction);
10289     }
10290   else
10291     {
10292       gtk_tree_view_clamp_node_visible (tree_view, cursor_tree, cursor_node);
10293
10294       if (!tree_view->priv->extend_selection_pressed)
10295         {
10296           if (! gtk_widget_keynav_failed (GTK_WIDGET (tree_view),
10297                                           count < 0 ?
10298                                           GTK_DIR_UP : GTK_DIR_DOWN))
10299             {
10300               GtkWidget *toplevel = gtk_widget_get_toplevel (GTK_WIDGET (tree_view));
10301
10302               if (toplevel)
10303                 gtk_widget_child_focus (toplevel,
10304                                         count < 0 ?
10305                                         GTK_DIR_TAB_BACKWARD :
10306                                         GTK_DIR_TAB_FORWARD);
10307
10308               grab_focus = FALSE;
10309             }
10310         }
10311       else
10312         {
10313           gtk_widget_error_bell (GTK_WIDGET (tree_view));
10314         }
10315
10316       if (cell_area)
10317         gtk_cell_area_set_focus_cell (cell_area, last_focus_cell);
10318     }
10319
10320   if (grab_focus)
10321     gtk_widget_grab_focus (GTK_WIDGET (tree_view));
10322 }
10323
10324 static void
10325 gtk_tree_view_move_cursor_page_up_down (GtkTreeView *tree_view,
10326                                         gint         count)
10327 {
10328   GtkRBTree *cursor_tree = NULL;
10329   GtkRBNode *cursor_node = NULL;
10330   GtkTreePath *old_cursor_path = NULL;
10331   GtkTreePath *cursor_path = NULL;
10332   GtkRBTree *start_cursor_tree = NULL;
10333   GtkRBNode *start_cursor_node = NULL;
10334   gint y;
10335   gint window_y;
10336   gint vertical_separator;
10337
10338   if (!gtk_widget_has_focus (GTK_WIDGET (tree_view)))
10339     return;
10340
10341   if (gtk_tree_row_reference_valid (tree_view->priv->cursor))
10342     old_cursor_path = gtk_tree_row_reference_get_path (tree_view->priv->cursor);
10343   else
10344     /* This is sorta weird.  Focus in should give us a cursor */
10345     return;
10346
10347   gtk_widget_style_get (GTK_WIDGET (tree_view), "vertical-separator", &vertical_separator, NULL);
10348   _gtk_tree_view_find_node (tree_view, old_cursor_path,
10349                             &cursor_tree, &cursor_node);
10350
10351   if (cursor_tree == NULL)
10352     {
10353       /* FIXME: we lost the cursor.  Should we try to get one? */
10354       gtk_tree_path_free (old_cursor_path);
10355       return;
10356     }
10357   g_return_if_fail (cursor_node != NULL);
10358
10359   y = _gtk_rbtree_node_find_offset (cursor_tree, cursor_node);
10360   window_y = RBTREE_Y_TO_TREE_WINDOW_Y (tree_view, y);
10361   y += tree_view->priv->cursor_offset;
10362   y += count * (int)gtk_adjustment_get_page_increment (tree_view->priv->vadjustment);
10363   y = CLAMP (y, (gint)gtk_adjustment_get_lower (tree_view->priv->vadjustment),  (gint)gtk_adjustment_get_upper (tree_view->priv->vadjustment) - vertical_separator);
10364
10365   if (y >= tree_view->priv->height)
10366     y = tree_view->priv->height - 1;
10367
10368   tree_view->priv->cursor_offset =
10369     _gtk_rbtree_find_offset (tree_view->priv->tree, y,
10370                              &cursor_tree, &cursor_node);
10371
10372   if (cursor_tree == NULL)
10373     {
10374       /* FIXME: we lost the cursor.  Should we try to get one? */
10375       gtk_tree_path_free (old_cursor_path);
10376       return;
10377     }
10378
10379   if (tree_view->priv->cursor_offset
10380       > gtk_tree_view_get_row_height (tree_view, cursor_node))
10381     {
10382       _gtk_rbtree_next_full (cursor_tree, cursor_node,
10383                              &cursor_tree, &cursor_node);
10384       tree_view->priv->cursor_offset -= gtk_tree_view_get_row_height (tree_view, cursor_node);
10385     }
10386
10387   y -= tree_view->priv->cursor_offset;
10388   cursor_path = _gtk_tree_view_find_path (tree_view, cursor_tree, cursor_node);
10389
10390   start_cursor_tree = cursor_tree;
10391   start_cursor_node = cursor_node;
10392
10393   if (! search_first_focusable_path (tree_view, &cursor_path,
10394                                      (count != -1),
10395                                      &cursor_tree, &cursor_node))
10396     {
10397       /* It looks like we reached the end of the view without finding
10398        * a focusable row.  We will step backwards to find the last
10399        * focusable row.
10400        */
10401       cursor_tree = start_cursor_tree;
10402       cursor_node = start_cursor_node;
10403       cursor_path = _gtk_tree_view_find_path (tree_view, cursor_tree, cursor_node);
10404
10405       search_first_focusable_path (tree_view, &cursor_path,
10406                                    (count == -1),
10407                                    &cursor_tree, &cursor_node);
10408     }
10409
10410   if (!cursor_path)
10411     goto cleanup;
10412
10413   /* update y */
10414   y = _gtk_rbtree_node_find_offset (cursor_tree, cursor_node);
10415
10416   gtk_tree_view_real_set_cursor (tree_view, cursor_path, TRUE, FALSE);
10417
10418   y -= window_y;
10419   gtk_tree_view_scroll_to_point (tree_view, -1, y);
10420   gtk_tree_view_clamp_node_visible (tree_view, cursor_tree, cursor_node);
10421   _gtk_tree_view_queue_draw_node (tree_view, cursor_tree, cursor_node, NULL);
10422
10423   if (!gtk_tree_path_compare (old_cursor_path, cursor_path))
10424     gtk_widget_error_bell (GTK_WIDGET (tree_view));
10425
10426   gtk_widget_grab_focus (GTK_WIDGET (tree_view));
10427
10428 cleanup:
10429   gtk_tree_path_free (old_cursor_path);
10430   gtk_tree_path_free (cursor_path);
10431 }
10432
10433 static void
10434 gtk_tree_view_move_cursor_left_right (GtkTreeView *tree_view,
10435                                       gint         count)
10436 {
10437   GtkRBTree *cursor_tree = NULL;
10438   GtkRBNode *cursor_node = NULL;
10439   GtkTreePath *cursor_path = NULL;
10440   GtkTreeViewColumn *column;
10441   GtkTreeIter iter;
10442   GList *list;
10443   gboolean found_column = FALSE;
10444   gboolean rtl;
10445   GtkDirectionType direction;
10446   GtkCellArea     *cell_area;
10447   GtkCellRenderer *last_focus_cell = NULL;
10448   GtkCellArea     *last_focus_area = NULL;
10449
10450   rtl = (gtk_widget_get_direction (GTK_WIDGET (tree_view)) == GTK_TEXT_DIR_RTL);
10451
10452   if (!gtk_widget_has_focus (GTK_WIDGET (tree_view)))
10453     return;
10454
10455   if (gtk_tree_row_reference_valid (tree_view->priv->cursor))
10456     cursor_path = gtk_tree_row_reference_get_path (tree_view->priv->cursor);
10457   else
10458     return;
10459
10460   _gtk_tree_view_find_node (tree_view, cursor_path, &cursor_tree, &cursor_node);
10461   if (cursor_tree == NULL)
10462     return;
10463   if (gtk_tree_model_get_iter (tree_view->priv->model, &iter, cursor_path) == FALSE)
10464     {
10465       gtk_tree_path_free (cursor_path);
10466       return;
10467     }
10468   gtk_tree_path_free (cursor_path);
10469
10470   list = rtl ? g_list_last (tree_view->priv->columns) : g_list_first (tree_view->priv->columns);
10471   if (tree_view->priv->focus_column)
10472     {
10473       /* Save the cell/area we are moving focus from, if moving the cursor
10474        * by one step hits the end we'll set focus back here */
10475       last_focus_area = gtk_cell_layout_get_area (GTK_CELL_LAYOUT (tree_view->priv->focus_column));
10476       last_focus_cell = gtk_cell_area_get_focus_cell (last_focus_area);
10477
10478       for (; list; list = (rtl ? list->prev : list->next))
10479         {
10480           if (list->data == tree_view->priv->focus_column)
10481             break;
10482         }
10483     }
10484
10485   direction = count > 0 ? GTK_DIR_RIGHT : GTK_DIR_LEFT;
10486
10487   while (list)
10488     {
10489       column = list->data;
10490       if (gtk_tree_view_column_get_visible (column) == FALSE)
10491         goto loop_end;
10492
10493       gtk_tree_view_column_cell_set_cell_data (column,
10494                                                tree_view->priv->model,
10495                                                &iter,
10496                                                GTK_RBNODE_FLAG_SET (cursor_node, GTK_RBNODE_IS_PARENT),
10497                                                cursor_node->children?TRUE:FALSE);
10498
10499       cell_area = gtk_cell_layout_get_area (GTK_CELL_LAYOUT (column));
10500       if (gtk_cell_area_focus (cell_area, direction))
10501         {
10502           tree_view->priv->focus_column = column;
10503           found_column = TRUE;
10504           break;
10505         }
10506
10507     loop_end:
10508       if (count == 1)
10509         list = rtl ? list->prev : list->next;
10510       else
10511         list = rtl ? list->next : list->prev;
10512     }
10513
10514   if (found_column)
10515     {
10516       if (!gtk_tree_view_has_can_focus_cell (tree_view))
10517         _gtk_tree_view_queue_draw_node (tree_view,
10518                                         cursor_tree,
10519                                         cursor_node,
10520                                         NULL);
10521       g_signal_emit (tree_view, tree_view_signals[CURSOR_CHANGED], 0);
10522       gtk_widget_grab_focus (GTK_WIDGET (tree_view));
10523     }
10524   else
10525     {
10526       gtk_widget_error_bell (GTK_WIDGET (tree_view));
10527
10528       if (last_focus_area)
10529         gtk_cell_area_set_focus_cell (last_focus_area, last_focus_cell);
10530     }
10531
10532   gtk_tree_view_clamp_column_visible (tree_view,
10533                                       tree_view->priv->focus_column, TRUE);
10534 }
10535
10536 static void
10537 gtk_tree_view_move_cursor_start_end (GtkTreeView *tree_view,
10538                                      gint         count)
10539 {
10540   GtkRBTree *cursor_tree;
10541   GtkRBNode *cursor_node;
10542   GtkTreePath *path;
10543   GtkTreePath *old_path;
10544
10545   if (!gtk_widget_has_focus (GTK_WIDGET (tree_view)))
10546     return;
10547
10548   g_return_if_fail (tree_view->priv->tree != NULL);
10549
10550   gtk_tree_view_get_cursor (tree_view, &old_path, NULL);
10551
10552   cursor_tree = tree_view->priv->tree;
10553   cursor_node = cursor_tree->root;
10554
10555   if (count == -1)
10556     {
10557       while (cursor_node && cursor_node->left != cursor_tree->nil)
10558         cursor_node = cursor_node->left;
10559
10560       /* Now go forward to find the first focusable row. */
10561       path = _gtk_tree_view_find_path (tree_view, cursor_tree, cursor_node);
10562       search_first_focusable_path (tree_view, &path,
10563                                    TRUE, &cursor_tree, &cursor_node);
10564     }
10565   else
10566     {
10567       do
10568         {
10569           while (cursor_node && cursor_node->right != cursor_tree->nil)
10570             cursor_node = cursor_node->right;
10571           if (cursor_node->children == NULL)
10572             break;
10573
10574           cursor_tree = cursor_node->children;
10575           cursor_node = cursor_tree->root;
10576         }
10577       while (1);
10578
10579       /* Now go backwards to find last focusable row. */
10580       path = _gtk_tree_view_find_path (tree_view, cursor_tree, cursor_node);
10581       search_first_focusable_path (tree_view, &path,
10582                                    FALSE, &cursor_tree, &cursor_node);
10583     }
10584
10585   if (!path)
10586     goto cleanup;
10587
10588   if (gtk_tree_path_compare (old_path, path))
10589     {
10590       gtk_tree_view_real_set_cursor (tree_view, path, TRUE, TRUE);
10591       gtk_widget_grab_focus (GTK_WIDGET (tree_view));
10592     }
10593   else
10594     {
10595       gtk_widget_error_bell (GTK_WIDGET (tree_view));
10596     }
10597
10598 cleanup:
10599   gtk_tree_path_free (old_path);
10600   gtk_tree_path_free (path);
10601 }
10602
10603 static gboolean
10604 gtk_tree_view_real_select_all (GtkTreeView *tree_view)
10605 {
10606   if (!gtk_widget_has_focus (GTK_WIDGET (tree_view)))
10607     return FALSE;
10608
10609   if (gtk_tree_selection_get_mode (tree_view->priv->selection) != GTK_SELECTION_MULTIPLE)
10610     return FALSE;
10611
10612   gtk_tree_selection_select_all (tree_view->priv->selection);
10613
10614   return TRUE;
10615 }
10616
10617 static gboolean
10618 gtk_tree_view_real_unselect_all (GtkTreeView *tree_view)
10619 {
10620   if (!gtk_widget_has_focus (GTK_WIDGET (tree_view)))
10621     return FALSE;
10622
10623   if (gtk_tree_selection_get_mode (tree_view->priv->selection) != GTK_SELECTION_MULTIPLE)
10624     return FALSE;
10625
10626   gtk_tree_selection_unselect_all (tree_view->priv->selection);
10627
10628   return TRUE;
10629 }
10630
10631 static gboolean
10632 gtk_tree_view_real_select_cursor_row (GtkTreeView *tree_view,
10633                                       gboolean     start_editing)
10634 {
10635   GtkRBTree *new_tree = NULL;
10636   GtkRBNode *new_node = NULL;
10637   GtkRBTree *cursor_tree = NULL;
10638   GtkRBNode *cursor_node = NULL;
10639   GtkTreePath *cursor_path = NULL;
10640   GtkTreeSelectMode mode = 0;
10641
10642   if (!gtk_widget_has_focus (GTK_WIDGET (tree_view)))
10643     return FALSE;
10644
10645   if (tree_view->priv->cursor)
10646     cursor_path = gtk_tree_row_reference_get_path (tree_view->priv->cursor);
10647
10648   if (cursor_path == NULL)
10649     return FALSE;
10650
10651   _gtk_tree_view_find_node (tree_view, cursor_path,
10652                             &cursor_tree, &cursor_node);
10653
10654   if (cursor_tree == NULL)
10655     {
10656       gtk_tree_path_free (cursor_path);
10657       return FALSE;
10658     }
10659
10660   if (!tree_view->priv->extend_selection_pressed && start_editing &&
10661       tree_view->priv->focus_column)
10662     {
10663       if (gtk_tree_view_start_editing (tree_view, cursor_path, FALSE))
10664         {
10665           gtk_tree_path_free (cursor_path);
10666           return TRUE;
10667         }
10668     }
10669
10670   if (tree_view->priv->modify_selection_pressed)
10671     mode |= GTK_TREE_SELECT_MODE_TOGGLE;
10672   if (tree_view->priv->extend_selection_pressed)
10673     mode |= GTK_TREE_SELECT_MODE_EXTEND;
10674
10675   _gtk_tree_selection_internal_select_node (tree_view->priv->selection,
10676                                             cursor_node,
10677                                             cursor_tree,
10678                                             cursor_path,
10679                                             mode,
10680                                             FALSE);
10681
10682   /* We bail out if the original (tree, node) don't exist anymore after
10683    * handling the selection-changed callback.  We do return TRUE because
10684    * the key press has been handled at this point.
10685    */
10686   _gtk_tree_view_find_node (tree_view, cursor_path, &new_tree, &new_node);
10687
10688   if (cursor_tree != new_tree || cursor_node != new_node)
10689     return FALSE;
10690
10691   gtk_tree_view_clamp_node_visible (tree_view, cursor_tree, cursor_node);
10692
10693   gtk_widget_grab_focus (GTK_WIDGET (tree_view));
10694   _gtk_tree_view_queue_draw_node (tree_view, cursor_tree, cursor_node, NULL);
10695
10696   if (!tree_view->priv->extend_selection_pressed)
10697     gtk_tree_view_row_activated (tree_view, cursor_path,
10698                                  tree_view->priv->focus_column);
10699
10700   gtk_tree_path_free (cursor_path);
10701
10702   return TRUE;
10703 }
10704
10705 static gboolean
10706 gtk_tree_view_real_toggle_cursor_row (GtkTreeView *tree_view)
10707 {
10708   GtkRBTree *new_tree = NULL;
10709   GtkRBNode *new_node = NULL;
10710   GtkRBTree *cursor_tree = NULL;
10711   GtkRBNode *cursor_node = NULL;
10712   GtkTreePath *cursor_path = NULL;
10713
10714   if (!gtk_widget_has_focus (GTK_WIDGET (tree_view)))
10715     return FALSE;
10716
10717   cursor_path = NULL;
10718   if (tree_view->priv->cursor)
10719     cursor_path = gtk_tree_row_reference_get_path (tree_view->priv->cursor);
10720
10721   if (cursor_path == NULL)
10722     return FALSE;
10723
10724   _gtk_tree_view_find_node (tree_view, cursor_path,
10725                             &cursor_tree, &cursor_node);
10726   if (cursor_tree == NULL)
10727     {
10728       gtk_tree_path_free (cursor_path);
10729       return FALSE;
10730     }
10731
10732   _gtk_tree_selection_internal_select_node (tree_view->priv->selection,
10733                                             cursor_node,
10734                                             cursor_tree,
10735                                             cursor_path,
10736                                             GTK_TREE_SELECT_MODE_TOGGLE,
10737                                             FALSE);
10738
10739   /* We bail out if the original (tree, node) don't exist anymore after
10740    * handling the selection-changed callback.  We do return TRUE because
10741    * the key press has been handled at this point.
10742    */
10743   _gtk_tree_view_find_node (tree_view, cursor_path, &new_tree, &new_node);
10744
10745   if (cursor_tree != new_tree || cursor_node != new_node)
10746     return FALSE;
10747
10748   gtk_tree_view_clamp_node_visible (tree_view, cursor_tree, cursor_node);
10749
10750   gtk_widget_grab_focus (GTK_WIDGET (tree_view));
10751   gtk_tree_view_queue_draw_path (tree_view, cursor_path, NULL);
10752   gtk_tree_path_free (cursor_path);
10753
10754   return TRUE;
10755 }
10756
10757 static gboolean
10758 gtk_tree_view_real_expand_collapse_cursor_row (GtkTreeView *tree_view,
10759                                                gboolean     logical,
10760                                                gboolean     expand,
10761                                                gboolean     open_all)
10762 {
10763   GtkTreePath *cursor_path = NULL;
10764   GtkRBTree *tree;
10765   GtkRBNode *node;
10766
10767   if (!gtk_widget_has_focus (GTK_WIDGET (tree_view)))
10768     return FALSE;
10769
10770   cursor_path = NULL;
10771   if (tree_view->priv->cursor)
10772     cursor_path = gtk_tree_row_reference_get_path (tree_view->priv->cursor);
10773
10774   if (cursor_path == NULL)
10775     return FALSE;
10776
10777   if (_gtk_tree_view_find_node (tree_view, cursor_path, &tree, &node))
10778     return FALSE;
10779
10780   /* Don't handle the event if we aren't an expander */
10781   if (!((node->flags & GTK_RBNODE_IS_PARENT) == GTK_RBNODE_IS_PARENT))
10782     return FALSE;
10783
10784   if (!logical
10785       && gtk_widget_get_direction (GTK_WIDGET (tree_view)) == GTK_TEXT_DIR_RTL)
10786     expand = !expand;
10787
10788   if (expand)
10789     gtk_tree_view_real_expand_row (tree_view, cursor_path, tree, node, open_all, TRUE);
10790   else
10791     gtk_tree_view_real_collapse_row (tree_view, cursor_path, tree, node, TRUE);
10792
10793   gtk_tree_path_free (cursor_path);
10794
10795   return TRUE;
10796 }
10797
10798 static gboolean
10799 gtk_tree_view_real_select_cursor_parent (GtkTreeView *tree_view)
10800 {
10801   GtkRBTree *cursor_tree = NULL;
10802   GtkRBNode *cursor_node = NULL;
10803   GtkTreePath *cursor_path = NULL;
10804   GdkModifierType state;
10805
10806   if (!gtk_widget_has_focus (GTK_WIDGET (tree_view)))
10807     goto out;
10808
10809   cursor_path = NULL;
10810   if (tree_view->priv->cursor)
10811     cursor_path = gtk_tree_row_reference_get_path (tree_view->priv->cursor);
10812
10813   if (cursor_path == NULL)
10814     goto out;
10815
10816   _gtk_tree_view_find_node (tree_view, cursor_path,
10817                             &cursor_tree, &cursor_node);
10818   if (cursor_tree == NULL)
10819     {
10820       gtk_tree_path_free (cursor_path);
10821       goto out;
10822     }
10823
10824   if (cursor_tree->parent_node)
10825     {
10826       gtk_tree_view_queue_draw_path (tree_view, cursor_path, NULL);
10827       cursor_node = cursor_tree->parent_node;
10828       cursor_tree = cursor_tree->parent_tree;
10829
10830       gtk_tree_path_up (cursor_path);
10831
10832       if (gtk_get_current_event_state (&state))
10833         {
10834           GdkModifierType modify_mod_mask;
10835
10836           modify_mod_mask =
10837             gtk_widget_get_modifier_mask (GTK_WIDGET (tree_view),
10838                                           GDK_MODIFIER_INTENT_MODIFY_SELECTION);
10839
10840           if ((state & modify_mod_mask) == modify_mod_mask)
10841             tree_view->priv->modify_selection_pressed = TRUE;
10842         }
10843
10844       gtk_tree_view_real_set_cursor (tree_view, cursor_path, TRUE, FALSE);
10845       gtk_tree_view_clamp_node_visible (tree_view, cursor_tree, cursor_node);
10846
10847       gtk_widget_grab_focus (GTK_WIDGET (tree_view));
10848       gtk_tree_view_queue_draw_path (tree_view, cursor_path, NULL);
10849       gtk_tree_path_free (cursor_path);
10850
10851       tree_view->priv->modify_selection_pressed = FALSE;
10852
10853       return TRUE;
10854     }
10855
10856  out:
10857
10858   tree_view->priv->search_entry_avoid_unhandled_binding = TRUE;
10859   return FALSE;
10860 }
10861
10862 static gboolean
10863 gtk_tree_view_search_entry_flush_timeout (GtkTreeView *tree_view)
10864 {
10865   gtk_tree_view_search_dialog_hide (tree_view->priv->search_window, tree_view, NULL);
10866   tree_view->priv->typeselect_flush_timeout = 0;
10867
10868   return FALSE;
10869 }
10870
10871 /* Cut and paste from gtkwindow.c */
10872 static void
10873 send_focus_change (GtkWidget *widget,
10874                    GdkDevice *device,
10875                    gboolean   in)
10876 {
10877   GdkDeviceManager *device_manager;
10878   GList *devices, *d;
10879
10880   device_manager = gdk_display_get_device_manager (gtk_widget_get_display (widget));
10881   devices = gdk_device_manager_list_devices (device_manager, GDK_DEVICE_TYPE_MASTER);
10882   devices = g_list_concat (devices, gdk_device_manager_list_devices (device_manager, GDK_DEVICE_TYPE_SLAVE));
10883   devices = g_list_concat (devices, gdk_device_manager_list_devices (device_manager, GDK_DEVICE_TYPE_FLOATING));
10884
10885   for (d = devices; d; d = d->next)
10886     {
10887       GdkDevice *dev = d->data;
10888       GdkEvent *fevent;
10889       GdkWindow *window;
10890
10891       if (gdk_device_get_source (dev) != GDK_SOURCE_KEYBOARD)
10892         continue;
10893
10894       window = gtk_widget_get_window (widget);
10895
10896       /* Skip non-master keyboards that haven't
10897        * selected for events from this window
10898        */
10899       if (gdk_device_get_device_type (dev) != GDK_DEVICE_TYPE_MASTER &&
10900           !gdk_window_get_device_events (window, dev))
10901         continue;
10902
10903       fevent = gdk_event_new (GDK_FOCUS_CHANGE);
10904
10905       fevent->focus_change.type = GDK_FOCUS_CHANGE;
10906       fevent->focus_change.window = g_object_ref (window);
10907       fevent->focus_change.in = in;
10908       gdk_event_set_device (fevent, device);
10909
10910       gtk_widget_send_focus_change (widget, fevent);
10911
10912       gdk_event_free (fevent);
10913     }
10914
10915   g_list_free (devices);
10916 }
10917
10918 static void
10919 gtk_tree_view_ensure_interactive_directory (GtkTreeView *tree_view)
10920 {
10921   GtkWidget *frame, *vbox, *toplevel;
10922   GdkScreen *screen;
10923
10924   if (tree_view->priv->search_custom_entry_set)
10925     return;
10926
10927   toplevel = gtk_widget_get_toplevel (GTK_WIDGET (tree_view));
10928   screen = gtk_widget_get_screen (GTK_WIDGET (tree_view));
10929
10930    if (tree_view->priv->search_window != NULL)
10931      {
10932        if (gtk_window_has_group (GTK_WINDOW (toplevel)))
10933          gtk_window_group_add_window (gtk_window_get_group (GTK_WINDOW (toplevel)),
10934                                       GTK_WINDOW (tree_view->priv->search_window));
10935        else if (gtk_window_has_group (GTK_WINDOW (tree_view->priv->search_window)))
10936          gtk_window_group_remove_window (gtk_window_get_group (GTK_WINDOW (tree_view->priv->search_window)),
10937                                          GTK_WINDOW (tree_view->priv->search_window));
10938
10939        gtk_window_set_screen (GTK_WINDOW (tree_view->priv->search_window), screen);
10940
10941        return;
10942      }
10943
10944   tree_view->priv->search_window = gtk_window_new (GTK_WINDOW_POPUP);
10945   gtk_window_set_screen (GTK_WINDOW (tree_view->priv->search_window), screen);
10946
10947   if (gtk_window_has_group (GTK_WINDOW (toplevel)))
10948     gtk_window_group_add_window (gtk_window_get_group (GTK_WINDOW (toplevel)),
10949                                  GTK_WINDOW (tree_view->priv->search_window));
10950
10951   gtk_window_set_type_hint (GTK_WINDOW (tree_view->priv->search_window),
10952                             GDK_WINDOW_TYPE_HINT_UTILITY);
10953   gtk_window_set_modal (GTK_WINDOW (tree_view->priv->search_window), TRUE);
10954   g_signal_connect (tree_view->priv->search_window, "delete-event",
10955                     G_CALLBACK (gtk_tree_view_search_delete_event),
10956                     tree_view);
10957   g_signal_connect (tree_view->priv->search_window, "key-press-event",
10958                     G_CALLBACK (gtk_tree_view_search_key_press_event),
10959                     tree_view);
10960   g_signal_connect (tree_view->priv->search_window, "button-press-event",
10961                     G_CALLBACK (gtk_tree_view_search_button_press_event),
10962                     tree_view);
10963   g_signal_connect (tree_view->priv->search_window, "scroll-event",
10964                     G_CALLBACK (gtk_tree_view_search_scroll_event),
10965                     tree_view);
10966
10967   frame = gtk_frame_new (NULL);
10968   gtk_frame_set_shadow_type (GTK_FRAME (frame), GTK_SHADOW_ETCHED_IN);
10969   gtk_widget_show (frame);
10970   gtk_container_add (GTK_CONTAINER (tree_view->priv->search_window), frame);
10971
10972   vbox = gtk_box_new (GTK_ORIENTATION_VERTICAL, 0);
10973   gtk_widget_show (vbox);
10974   gtk_container_add (GTK_CONTAINER (frame), vbox);
10975   gtk_container_set_border_width (GTK_CONTAINER (vbox), 3);
10976
10977   /* add entry */
10978   tree_view->priv->search_entry = gtk_entry_new ();
10979   gtk_widget_show (tree_view->priv->search_entry);
10980   g_signal_connect (tree_view->priv->search_entry, "populate-popup",
10981                     G_CALLBACK (gtk_tree_view_search_disable_popdown),
10982                     tree_view);
10983   g_signal_connect (tree_view->priv->search_entry,
10984                     "activate", G_CALLBACK (gtk_tree_view_search_activate),
10985                     tree_view);
10986
10987   g_signal_connect (_gtk_entry_get_im_context (GTK_ENTRY (tree_view->priv->search_entry)),
10988                     "preedit-changed",
10989                     G_CALLBACK (gtk_tree_view_search_preedit_changed),
10990                     tree_view);
10991
10992   gtk_container_add (GTK_CONTAINER (vbox),
10993                      tree_view->priv->search_entry);
10994
10995   gtk_widget_realize (tree_view->priv->search_entry);
10996 }
10997
10998 /* Pops up the interactive search entry.  If keybinding is TRUE then the user
10999  * started this by typing the start_interactive_search keybinding.  Otherwise, it came from
11000  */
11001 static gboolean
11002 gtk_tree_view_real_start_interactive_search (GtkTreeView *tree_view,
11003                                              GdkDevice   *device,
11004                                              gboolean     keybinding)
11005 {
11006   /* We only start interactive search if we have focus or the columns
11007    * have focus.  If one of our children have focus, we don't want to
11008    * start the search.
11009    */
11010   GList *list;
11011   gboolean found_focus = FALSE;
11012   GtkWidgetClass *entry_parent_class;
11013
11014   if (!tree_view->priv->enable_search && !keybinding)
11015     return FALSE;
11016
11017   if (tree_view->priv->search_custom_entry_set)
11018     return FALSE;
11019
11020   if (tree_view->priv->search_window != NULL &&
11021       gtk_widget_get_visible (tree_view->priv->search_window))
11022     return TRUE;
11023
11024   for (list = tree_view->priv->columns; list; list = list->next)
11025     {
11026       GtkTreeViewColumn *column;
11027       GtkWidget         *button;
11028
11029       column = list->data;
11030       if (!gtk_tree_view_column_get_visible (column))
11031         continue;
11032
11033       button = gtk_tree_view_column_get_button (column);
11034       if (gtk_widget_has_focus (button))
11035         {
11036           found_focus = TRUE;
11037           break;
11038         }
11039     }
11040
11041   if (gtk_widget_has_focus (GTK_WIDGET (tree_view)))
11042     found_focus = TRUE;
11043
11044   if (!found_focus)
11045     return FALSE;
11046
11047   if (tree_view->priv->search_column < 0)
11048     return FALSE;
11049
11050   gtk_tree_view_ensure_interactive_directory (tree_view);
11051
11052   if (keybinding)
11053     gtk_entry_set_text (GTK_ENTRY (tree_view->priv->search_entry), "");
11054
11055   /* done, show it */
11056   tree_view->priv->search_position_func (tree_view, tree_view->priv->search_window, tree_view->priv->search_position_user_data);
11057   gtk_widget_show (tree_view->priv->search_window);
11058   if (tree_view->priv->search_entry_changed_id == 0)
11059     {
11060       tree_view->priv->search_entry_changed_id =
11061         g_signal_connect (tree_view->priv->search_entry, "changed",
11062                           G_CALLBACK (gtk_tree_view_search_init),
11063                           tree_view);
11064     }
11065
11066   tree_view->priv->typeselect_flush_timeout =
11067     gdk_threads_add_timeout (GTK_TREE_VIEW_SEARCH_DIALOG_TIMEOUT,
11068                    (GSourceFunc) gtk_tree_view_search_entry_flush_timeout,
11069                    tree_view);
11070
11071   /* Grab focus will select all the text.  We don't want that to happen, so we
11072    * call the parent instance and bypass the selection change.  This is probably
11073    * really non-kosher. */
11074   entry_parent_class = g_type_class_peek_parent (GTK_ENTRY_GET_CLASS (tree_view->priv->search_entry));
11075   (entry_parent_class->grab_focus) (tree_view->priv->search_entry);
11076
11077   /* send focus-in event */
11078   send_focus_change (tree_view->priv->search_entry, device, TRUE);
11079
11080   /* search first matching iter */
11081   gtk_tree_view_search_init (tree_view->priv->search_entry, tree_view);
11082
11083   return TRUE;
11084 }
11085
11086 static gboolean
11087 gtk_tree_view_start_interactive_search (GtkTreeView *tree_view)
11088 {
11089   return gtk_tree_view_real_start_interactive_search (tree_view,
11090                                                       gtk_get_current_event_device (),
11091                                                       TRUE);
11092 }
11093
11094 /* this function returns the new width of the column being resized given
11095  * the column and x position of the cursor; the x cursor position is passed
11096  * in as a pointer and automagicly corrected if it's beyond min/max limits
11097  */
11098 static gint
11099 gtk_tree_view_new_column_width (GtkTreeView *tree_view,
11100                                 gint       i,
11101                                 gint      *x)
11102 {
11103   GtkAllocation allocation;
11104   GtkTreeViewColumn *column;
11105   GtkRequisition button_req;
11106   gint max_width, min_width;
11107   gint width;
11108   gboolean rtl;
11109
11110   /* first translate the x position from widget->window
11111    * to clist->clist_window
11112    */
11113   rtl = (gtk_widget_get_direction (GTK_WIDGET (tree_view)) == GTK_TEXT_DIR_RTL);
11114   column = g_list_nth (tree_view->priv->columns, i)->data;
11115   gtk_widget_get_allocation (gtk_tree_view_column_get_button (column), &allocation);
11116   width = rtl ? (allocation.x + allocation.width - *x) : (*x - allocation.x);
11117
11118   /* Clamp down the value */
11119   min_width = gtk_tree_view_column_get_min_width (column);
11120   if (min_width == -1)
11121     {
11122       gtk_widget_get_preferred_size (gtk_tree_view_column_get_button (column), &button_req, NULL);
11123       width = MAX (button_req.width, width);
11124     }
11125   else
11126     width = MAX (min_width, width);
11127
11128   max_width = gtk_tree_view_column_get_max_width (column);
11129   if (max_width != -1)
11130     width = MIN (width, max_width);
11131
11132   *x = rtl ? (allocation.x + allocation.width - width) : (allocation.x + width);
11133
11134   return width;
11135 }
11136
11137
11138 /* FIXME this adjust_allocation is a big cut-and-paste from
11139  * GtkCList, needs to be some "official" way to do this
11140  * factored out.
11141  */
11142 typedef struct
11143 {
11144   GdkWindow *window;
11145   int dx;
11146   int dy;
11147 } ScrollData;
11148
11149 /* The window to which widget->window is relative */
11150 #define ALLOCATION_WINDOW(widget)               \
11151    (!gtk_widget_get_has_window (widget) ?                   \
11152     gtk_widget_get_window (widget) :                        \
11153     gdk_window_get_parent (gtk_widget_get_window (widget)))
11154
11155 static void
11156 adjust_allocation_recurse (GtkWidget *widget,
11157                            gpointer   data)
11158 {
11159   GtkAllocation allocation;
11160   ScrollData *scroll_data = data;
11161
11162   /* Need to really size allocate instead of just poking
11163    * into widget->allocation if the widget is not realized.
11164    * FIXME someone figure out why this was.
11165    */
11166   gtk_widget_get_allocation (widget, &allocation);
11167   if (!gtk_widget_get_realized (widget))
11168     {
11169       if (gtk_widget_get_visible (widget))
11170         {
11171           GdkRectangle tmp_rectangle = allocation;
11172           tmp_rectangle.x += scroll_data->dx;
11173           tmp_rectangle.y += scroll_data->dy;
11174
11175           gtk_widget_size_allocate (widget, &tmp_rectangle);
11176         }
11177     }
11178   else
11179     {
11180       if (ALLOCATION_WINDOW (widget) == scroll_data->window)
11181         {
11182           allocation.x += scroll_data->dx;
11183           allocation.y += scroll_data->dy;
11184           gtk_widget_set_allocation (widget, &allocation);
11185
11186           if (GTK_IS_CONTAINER (widget))
11187             gtk_container_forall (GTK_CONTAINER (widget),
11188                                   adjust_allocation_recurse,
11189                                   data);
11190         }
11191     }
11192 }
11193
11194 static void
11195 adjust_allocation (GtkWidget *widget,
11196                    int        dx,
11197                    int        dy)
11198 {
11199   ScrollData scroll_data;
11200
11201   if (gtk_widget_get_realized (widget))
11202     scroll_data.window = ALLOCATION_WINDOW (widget);
11203   else
11204     scroll_data.window = NULL;
11205
11206   scroll_data.dx = dx;
11207   scroll_data.dy = dy;
11208
11209   adjust_allocation_recurse (widget, &scroll_data);
11210 }
11211
11212 /* Callbacks */
11213 static void
11214 gtk_tree_view_adjustment_changed (GtkAdjustment *adjustment,
11215                                   GtkTreeView   *tree_view)
11216 {
11217   if (gtk_widget_get_realized (GTK_WIDGET (tree_view)))
11218     {
11219       GtkStyleContext *context;
11220       gint dy;
11221
11222       gdk_window_move (tree_view->priv->bin_window,
11223                        - gtk_adjustment_get_value (tree_view->priv->hadjustment),
11224                        gtk_tree_view_get_effective_header_height (tree_view));
11225       gdk_window_move (tree_view->priv->header_window,
11226                        - gtk_adjustment_get_value (tree_view->priv->hadjustment),
11227                        0);
11228       dy = tree_view->priv->dy - (int) gtk_adjustment_get_value (tree_view->priv->vadjustment);
11229       if (dy)
11230         {
11231           update_prelight (tree_view,
11232                            tree_view->priv->event_last_x,
11233                            tree_view->priv->event_last_y - dy);
11234
11235           if (tree_view->priv->edited_column)
11236             {
11237               GList *list;
11238               GtkTreeViewChild *child = NULL;
11239               GtkCellEditable *edit_widget;
11240               GtkCellArea *area;
11241
11242               area        = gtk_cell_layout_get_area (GTK_CELL_LAYOUT (tree_view->priv->edited_column));
11243               edit_widget = gtk_cell_area_get_edit_widget (area);
11244               if (GTK_IS_WIDGET (edit_widget))
11245                 {
11246                   adjust_allocation (GTK_WIDGET (edit_widget), 0, dy);
11247
11248                   for (list = tree_view->priv->children; list; list = list->next)
11249                     {
11250                       child = (GtkTreeViewChild *)list->data;
11251                       if (child->widget == GTK_WIDGET (edit_widget))
11252                         {
11253                           child->y += dy;
11254                           break;
11255                         }
11256                     }
11257                 }
11258             }
11259         }
11260       gdk_window_scroll (tree_view->priv->bin_window, 0, dy);
11261
11262       context = gtk_widget_get_style_context (GTK_WIDGET (tree_view));
11263       gtk_style_context_scroll_animations (context, tree_view->priv->bin_window, 0, dy);
11264
11265       if (tree_view->priv->dy != (int) gtk_adjustment_get_value (tree_view->priv->vadjustment))
11266         {
11267           /* update our dy and top_row */
11268           tree_view->priv->dy = (int) gtk_adjustment_get_value (tree_view->priv->vadjustment);
11269
11270           if (!tree_view->priv->in_top_row_to_dy)
11271             gtk_tree_view_dy_to_top_row (tree_view);
11272         }
11273
11274       gdk_window_process_updates (tree_view->priv->header_window, TRUE);
11275       gtk_tree_view_bin_process_updates (tree_view);
11276     }
11277 }
11278
11279 \f
11280
11281 /* Public methods
11282  */
11283
11284 /**
11285  * gtk_tree_view_new:
11286  *
11287  * Creates a new #GtkTreeView widget.
11288  *
11289  * Return value: A newly created #GtkTreeView widget.
11290  **/
11291 GtkWidget *
11292 gtk_tree_view_new (void)
11293 {
11294   return g_object_new (GTK_TYPE_TREE_VIEW, NULL);
11295 }
11296
11297 /**
11298  * gtk_tree_view_new_with_model:
11299  * @model: the model.
11300  *
11301  * Creates a new #GtkTreeView widget with the model initialized to @model.
11302  *
11303  * Return value: A newly created #GtkTreeView widget.
11304  **/
11305 GtkWidget *
11306 gtk_tree_view_new_with_model (GtkTreeModel *model)
11307 {
11308   return g_object_new (GTK_TYPE_TREE_VIEW, "model", model, NULL);
11309 }
11310
11311 /* Public Accessors
11312  */
11313
11314 /**
11315  * gtk_tree_view_get_model:
11316  * @tree_view: a #GtkTreeView
11317  *
11318  * Returns the model the #GtkTreeView is based on.  Returns %NULL if the
11319  * model is unset.
11320  *
11321  * Return value: (transfer none): A #GtkTreeModel, or %NULL if none is currently being used.
11322  **/
11323 GtkTreeModel *
11324 gtk_tree_view_get_model (GtkTreeView *tree_view)
11325 {
11326   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), NULL);
11327
11328   return tree_view->priv->model;
11329 }
11330
11331 /**
11332  * gtk_tree_view_set_model:
11333  * @tree_view: A #GtkTreeNode.
11334  * @model: (allow-none): The model.
11335  *
11336  * Sets the model for a #GtkTreeView.  If the @tree_view already has a model
11337  * set, it will remove it before setting the new model.  If @model is %NULL,
11338  * then it will unset the old model.
11339  **/
11340 void
11341 gtk_tree_view_set_model (GtkTreeView  *tree_view,
11342                          GtkTreeModel *model)
11343 {
11344   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
11345   g_return_if_fail (model == NULL || GTK_IS_TREE_MODEL (model));
11346
11347   if (model == tree_view->priv->model)
11348     return;
11349
11350   if (tree_view->priv->scroll_to_path)
11351     {
11352       gtk_tree_row_reference_free (tree_view->priv->scroll_to_path);
11353       tree_view->priv->scroll_to_path = NULL;
11354     }
11355
11356   if (tree_view->priv->rubber_band_status)
11357     gtk_tree_view_stop_rubber_band (tree_view);
11358
11359   if (tree_view->priv->model)
11360     {
11361       GList *tmplist = tree_view->priv->columns;
11362       GtkStyleContext *context;
11363
11364       gtk_tree_view_unref_and_check_selection_tree (tree_view, tree_view->priv->tree);
11365       gtk_tree_view_stop_editing (tree_view, TRUE);
11366
11367       context = gtk_widget_get_style_context (GTK_WIDGET (tree_view));
11368       gtk_style_context_cancel_animations (context, NULL);
11369
11370       g_signal_handlers_disconnect_by_func (tree_view->priv->model,
11371                                             gtk_tree_view_row_changed,
11372                                             tree_view);
11373       g_signal_handlers_disconnect_by_func (tree_view->priv->model,
11374                                             gtk_tree_view_row_inserted,
11375                                             tree_view);
11376       g_signal_handlers_disconnect_by_func (tree_view->priv->model,
11377                                             gtk_tree_view_row_has_child_toggled,
11378                                             tree_view);
11379       g_signal_handlers_disconnect_by_func (tree_view->priv->model,
11380                                             gtk_tree_view_row_deleted,
11381                                             tree_view);
11382       g_signal_handlers_disconnect_by_func (tree_view->priv->model,
11383                                             gtk_tree_view_rows_reordered,
11384                                             tree_view);
11385
11386       for (; tmplist; tmplist = tmplist->next)
11387         _gtk_tree_view_column_unset_model (tmplist->data,
11388                                            tree_view->priv->model);
11389
11390       if (tree_view->priv->tree)
11391         gtk_tree_view_free_rbtree (tree_view);
11392
11393       gtk_tree_row_reference_free (tree_view->priv->drag_dest_row);
11394       tree_view->priv->drag_dest_row = NULL;
11395       gtk_tree_row_reference_free (tree_view->priv->cursor);
11396       tree_view->priv->cursor = NULL;
11397       gtk_tree_row_reference_free (tree_view->priv->anchor);
11398       tree_view->priv->anchor = NULL;
11399       gtk_tree_row_reference_free (tree_view->priv->top_row);
11400       tree_view->priv->top_row = NULL;
11401       gtk_tree_row_reference_free (tree_view->priv->scroll_to_path);
11402       tree_view->priv->scroll_to_path = NULL;
11403
11404       tree_view->priv->scroll_to_column = NULL;
11405
11406       g_object_unref (tree_view->priv->model);
11407
11408       tree_view->priv->search_column = -1;
11409       tree_view->priv->fixed_height_check = 0;
11410       tree_view->priv->fixed_height = -1;
11411       tree_view->priv->dy = tree_view->priv->top_row_dy = 0;
11412       tree_view->priv->last_button_x = -1;
11413       tree_view->priv->last_button_y = -1;
11414     }
11415
11416   tree_view->priv->model = model;
11417
11418   if (tree_view->priv->model)
11419     {
11420       gint i;
11421       GtkTreePath *path;
11422       GtkTreeIter iter;
11423       GtkTreeModelFlags flags;
11424
11425       if (tree_view->priv->search_column == -1)
11426         {
11427           for (i = 0; i < gtk_tree_model_get_n_columns (model); i++)
11428             {
11429               GType type = gtk_tree_model_get_column_type (model, i);
11430
11431               if (g_value_type_transformable (type, G_TYPE_STRING))
11432                 {
11433                   tree_view->priv->search_column = i;
11434                   break;
11435                 }
11436             }
11437         }
11438
11439       g_object_ref (tree_view->priv->model);
11440       g_signal_connect (tree_view->priv->model,
11441                         "row-changed",
11442                         G_CALLBACK (gtk_tree_view_row_changed),
11443                         tree_view);
11444       g_signal_connect (tree_view->priv->model,
11445                         "row-inserted",
11446                         G_CALLBACK (gtk_tree_view_row_inserted),
11447                         tree_view);
11448       g_signal_connect (tree_view->priv->model,
11449                         "row-has-child-toggled",
11450                         G_CALLBACK (gtk_tree_view_row_has_child_toggled),
11451                         tree_view);
11452       g_signal_connect (tree_view->priv->model,
11453                         "row-deleted",
11454                         G_CALLBACK (gtk_tree_view_row_deleted),
11455                         tree_view);
11456       g_signal_connect (tree_view->priv->model,
11457                         "rows-reordered",
11458                         G_CALLBACK (gtk_tree_view_rows_reordered),
11459                         tree_view);
11460
11461       flags = gtk_tree_model_get_flags (tree_view->priv->model);
11462       if ((flags & GTK_TREE_MODEL_LIST_ONLY) == GTK_TREE_MODEL_LIST_ONLY)
11463         tree_view->priv->is_list = TRUE;
11464       else
11465         tree_view->priv->is_list = FALSE;
11466
11467       path = gtk_tree_path_new_first ();
11468       if (gtk_tree_model_get_iter (tree_view->priv->model, &iter, path))
11469         {
11470           tree_view->priv->tree = _gtk_rbtree_new ();
11471           gtk_tree_view_build_tree (tree_view, tree_view->priv->tree, &iter, 1, FALSE);
11472         }
11473       gtk_tree_path_free (path);
11474
11475       /*  FIXME: do I need to do this? gtk_tree_view_create_buttons (tree_view); */
11476       install_presize_handler (tree_view);
11477     }
11478
11479   g_object_notify (G_OBJECT (tree_view), "model");
11480
11481   if (tree_view->priv->selection)
11482   _gtk_tree_selection_emit_changed (tree_view->priv->selection);
11483
11484   if (gtk_widget_get_realized (GTK_WIDGET (tree_view)))
11485     gtk_widget_queue_resize (GTK_WIDGET (tree_view));
11486 }
11487
11488 /**
11489  * gtk_tree_view_get_selection:
11490  * @tree_view: A #GtkTreeView.
11491  *
11492  * Gets the #GtkTreeSelection associated with @tree_view.
11493  *
11494  * Return value: (transfer none): A #GtkTreeSelection object.
11495  **/
11496 GtkTreeSelection *
11497 gtk_tree_view_get_selection (GtkTreeView *tree_view)
11498 {
11499   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), NULL);
11500
11501   return tree_view->priv->selection;
11502 }
11503
11504 /**
11505  * gtk_tree_view_get_hadjustment:
11506  * @tree_view: A #GtkTreeView
11507  *
11508  * Gets the #GtkAdjustment currently being used for the horizontal aspect.
11509  *
11510  * Return value: (transfer none): A #GtkAdjustment object, or %NULL
11511  *     if none is currently being used.
11512  *
11513  * Deprecated: 3.0: Use gtk_scrollable_get_hadjustment()
11514  **/
11515 GtkAdjustment *
11516 gtk_tree_view_get_hadjustment (GtkTreeView *tree_view)
11517 {
11518   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), NULL);
11519
11520   return gtk_tree_view_do_get_hadjustment (tree_view);
11521 }
11522
11523 static GtkAdjustment *
11524 gtk_tree_view_do_get_hadjustment (GtkTreeView *tree_view)
11525 {
11526   return tree_view->priv->hadjustment;
11527 }
11528
11529 /**
11530  * gtk_tree_view_set_hadjustment:
11531  * @tree_view: A #GtkTreeView
11532  * @adjustment: (allow-none): The #GtkAdjustment to set, or %NULL
11533  *
11534  * Sets the #GtkAdjustment for the current horizontal aspect.
11535  *
11536  * Deprecated: 3.0: Use gtk_scrollable_set_hadjustment()
11537  **/
11538 void
11539 gtk_tree_view_set_hadjustment (GtkTreeView   *tree_view,
11540                                GtkAdjustment *adjustment)
11541 {
11542   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
11543   g_return_if_fail (adjustment == NULL || GTK_IS_ADJUSTMENT (adjustment));
11544
11545   gtk_tree_view_do_set_hadjustment (tree_view, adjustment);
11546 }
11547
11548 static void
11549 gtk_tree_view_do_set_hadjustment (GtkTreeView   *tree_view,
11550                                   GtkAdjustment *adjustment)
11551 {
11552   GtkTreeViewPrivate *priv = tree_view->priv;
11553
11554   if (adjustment && priv->hadjustment == adjustment)
11555     return;
11556
11557   if (priv->hadjustment != NULL)
11558     {
11559       g_signal_handlers_disconnect_by_func (priv->hadjustment,
11560                                             gtk_tree_view_adjustment_changed,
11561                                             tree_view);
11562       g_object_unref (priv->hadjustment);
11563     }
11564
11565   if (adjustment == NULL)
11566     adjustment = gtk_adjustment_new (0.0, 0.0, 0.0,
11567                                      0.0, 0.0, 0.0);
11568
11569   g_signal_connect (adjustment, "value-changed",
11570                     G_CALLBACK (gtk_tree_view_adjustment_changed), tree_view);
11571   priv->hadjustment = g_object_ref_sink (adjustment);
11572   /* FIXME: Adjustment should probably be populated here with fresh values, but
11573    * internal details are too complicated for me to decipher right now.
11574    */
11575   gtk_tree_view_adjustment_changed (NULL, tree_view);
11576
11577   g_object_notify (G_OBJECT (tree_view), "hadjustment");
11578 }
11579
11580 /**
11581  * gtk_tree_view_get_vadjustment:
11582  * @tree_view: A #GtkTreeView
11583  *
11584  * Gets the #GtkAdjustment currently being used for the vertical aspect.
11585  *
11586  * Return value: (transfer none): A #GtkAdjustment object, or %NULL
11587  *     if none is currently being used.
11588  *
11589  * Deprecated: 3.0: Use gtk_scrollable_get_vadjustment()
11590  **/
11591 GtkAdjustment *
11592 gtk_tree_view_get_vadjustment (GtkTreeView *tree_view)
11593 {
11594   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), NULL);
11595
11596   return gtk_tree_view_do_get_vadjustment (tree_view);
11597 }
11598
11599 static GtkAdjustment *
11600 gtk_tree_view_do_get_vadjustment (GtkTreeView *tree_view)
11601 {
11602   return tree_view->priv->vadjustment;
11603 }
11604
11605 /**
11606  * gtk_tree_view_set_vadjustment:
11607  * @tree_view: A #GtkTreeView
11608  * @adjustment: (allow-none): The #GtkAdjustment to set, or %NULL
11609  *
11610  * Sets the #GtkAdjustment for the current vertical aspect.
11611  *
11612  * Deprecated: 3.0: Use gtk_scrollable_set_vadjustment()
11613  **/
11614 void
11615 gtk_tree_view_set_vadjustment (GtkTreeView   *tree_view,
11616                                GtkAdjustment *adjustment)
11617 {
11618   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
11619   g_return_if_fail (adjustment == NULL || GTK_IS_ADJUSTMENT (adjustment));
11620
11621   gtk_tree_view_do_set_vadjustment (tree_view, adjustment);
11622 }
11623
11624 static void
11625 gtk_tree_view_do_set_vadjustment (GtkTreeView   *tree_view,
11626                                   GtkAdjustment *adjustment)
11627 {
11628   GtkTreeViewPrivate *priv = tree_view->priv;
11629
11630   if (adjustment && priv->vadjustment == adjustment)
11631     return;
11632
11633   if (priv->vadjustment != NULL)
11634     {
11635       g_signal_handlers_disconnect_by_func (priv->vadjustment,
11636                                             gtk_tree_view_adjustment_changed,
11637                                             tree_view);
11638       g_object_unref (priv->vadjustment);
11639     }
11640
11641   if (adjustment == NULL)
11642     adjustment = gtk_adjustment_new (0.0, 0.0, 0.0,
11643                                      0.0, 0.0, 0.0);
11644
11645   g_signal_connect (adjustment, "value-changed",
11646                     G_CALLBACK (gtk_tree_view_adjustment_changed), tree_view);
11647   priv->vadjustment = g_object_ref_sink (adjustment);
11648   /* FIXME: Adjustment should probably be populated here with fresh values, but
11649    * internal details are too complicated for me to decipher right now.
11650    */
11651   gtk_tree_view_adjustment_changed (NULL, tree_view);
11652   g_object_notify (G_OBJECT (tree_view), "vadjustment");
11653 }
11654
11655 /* Column and header operations */
11656
11657 /**
11658  * gtk_tree_view_get_headers_visible:
11659  * @tree_view: A #GtkTreeView.
11660  *
11661  * Returns %TRUE if the headers on the @tree_view are visible.
11662  *
11663  * Return value: Whether the headers are visible or not.
11664  **/
11665 gboolean
11666 gtk_tree_view_get_headers_visible (GtkTreeView *tree_view)
11667 {
11668   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), FALSE);
11669
11670   return tree_view->priv->headers_visible;
11671 }
11672
11673 /**
11674  * gtk_tree_view_set_headers_visible:
11675  * @tree_view: A #GtkTreeView.
11676  * @headers_visible: %TRUE if the headers are visible
11677  *
11678  * Sets the visibility state of the headers.
11679  **/
11680 void
11681 gtk_tree_view_set_headers_visible (GtkTreeView *tree_view,
11682                                    gboolean     headers_visible)
11683 {
11684   gint x, y;
11685   GList *list;
11686   GtkTreeViewColumn *column;
11687   GtkAllocation allocation;
11688   GtkWidget *button;
11689
11690   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
11691
11692   headers_visible = !! headers_visible;
11693
11694   if (tree_view->priv->headers_visible == headers_visible)
11695     return;
11696
11697   tree_view->priv->headers_visible = headers_visible == TRUE;
11698
11699   if (gtk_widget_get_realized (GTK_WIDGET (tree_view)))
11700     {
11701       gdk_window_get_position (tree_view->priv->bin_window, &x, &y);
11702       if (headers_visible)
11703         {
11704           gtk_widget_get_allocation (GTK_WIDGET (tree_view), &allocation);
11705           gdk_window_move_resize (tree_view->priv->bin_window,
11706                                   x, y  + gtk_tree_view_get_effective_header_height (tree_view),
11707                                   tree_view->priv->width, allocation.height -  + gtk_tree_view_get_effective_header_height (tree_view));
11708
11709           if (gtk_widget_get_mapped (GTK_WIDGET (tree_view)))
11710             gtk_tree_view_map_buttons (tree_view);
11711         }
11712       else
11713         {
11714           gdk_window_move_resize (tree_view->priv->bin_window, x, y, tree_view->priv->width, tree_view->priv->height);
11715
11716           for (list = tree_view->priv->columns; list; list = list->next)
11717             {
11718               column = list->data;
11719               button = gtk_tree_view_column_get_button (column);
11720
11721               gtk_widget_hide (button);
11722               gtk_widget_unmap (button);
11723             }
11724           gdk_window_hide (tree_view->priv->header_window);
11725         }
11726     }
11727
11728   gtk_widget_get_allocation (GTK_WIDGET (tree_view), &allocation);
11729   gtk_adjustment_configure (tree_view->priv->vadjustment,
11730                             gtk_adjustment_get_value (tree_view->priv->vadjustment),
11731                             0,
11732                             tree_view->priv->height,
11733                             gtk_adjustment_get_step_increment (tree_view->priv->vadjustment),
11734                             (allocation.height - gtk_tree_view_get_effective_header_height (tree_view)) / 2,
11735                             allocation.height - gtk_tree_view_get_effective_header_height (tree_view));
11736
11737   gtk_widget_queue_resize (GTK_WIDGET (tree_view));
11738
11739   g_object_notify (G_OBJECT (tree_view), "headers-visible");
11740 }
11741
11742 /**
11743  * gtk_tree_view_columns_autosize:
11744  * @tree_view: A #GtkTreeView.
11745  *
11746  * Resizes all columns to their optimal width. Only works after the
11747  * treeview has been realized.
11748  **/
11749 void
11750 gtk_tree_view_columns_autosize (GtkTreeView *tree_view)
11751 {
11752   gboolean dirty = FALSE;
11753   GList *list;
11754   GtkTreeViewColumn *column;
11755
11756   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
11757
11758   for (list = tree_view->priv->columns; list; list = list->next)
11759     {
11760       column = list->data;
11761       if (gtk_tree_view_column_get_sizing (column) == GTK_TREE_VIEW_COLUMN_AUTOSIZE)
11762         continue;
11763       _gtk_tree_view_column_cell_set_dirty (column, TRUE);
11764       dirty = TRUE;
11765     }
11766
11767   if (dirty)
11768     gtk_widget_queue_resize (GTK_WIDGET (tree_view));
11769 }
11770
11771 /**
11772  * gtk_tree_view_set_headers_clickable:
11773  * @tree_view: A #GtkTreeView.
11774  * @setting: %TRUE if the columns are clickable.
11775  *
11776  * Allow the column title buttons to be clicked.
11777  **/
11778 void
11779 gtk_tree_view_set_headers_clickable (GtkTreeView *tree_view,
11780                                      gboolean   setting)
11781 {
11782   GList *list;
11783
11784   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
11785
11786   for (list = tree_view->priv->columns; list; list = list->next)
11787     gtk_tree_view_column_set_clickable (GTK_TREE_VIEW_COLUMN (list->data), setting);
11788
11789   g_object_notify (G_OBJECT (tree_view), "headers-clickable");
11790 }
11791
11792
11793 /**
11794  * gtk_tree_view_get_headers_clickable:
11795  * @tree_view: A #GtkTreeView.
11796  *
11797  * Returns whether all header columns are clickable.
11798  *
11799  * Return value: %TRUE if all header columns are clickable, otherwise %FALSE
11800  *
11801  * Since: 2.10
11802  **/
11803 gboolean
11804 gtk_tree_view_get_headers_clickable (GtkTreeView *tree_view)
11805 {
11806   GList *list;
11807
11808   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), FALSE);
11809
11810   for (list = tree_view->priv->columns; list; list = list->next)
11811     if (!gtk_tree_view_column_get_clickable (GTK_TREE_VIEW_COLUMN (list->data)))
11812       return FALSE;
11813
11814   return TRUE;
11815 }
11816
11817 /**
11818  * gtk_tree_view_set_rules_hint
11819  * @tree_view: a #GtkTreeView
11820  * @setting: %TRUE if the tree requires reading across rows
11821  *
11822  * This function tells GTK+ that the user interface for your
11823  * application requires users to read across tree rows and associate
11824  * cells with one another. By default, GTK+ will then render the tree
11825  * with alternating row colors. Do <emphasis>not</emphasis> use it
11826  * just because you prefer the appearance of the ruled tree; that's a
11827  * question for the theme. Some themes will draw tree rows in
11828  * alternating colors even when rules are turned off, and users who
11829  * prefer that appearance all the time can choose those themes. You
11830  * should call this function only as a <emphasis>semantic</emphasis>
11831  * hint to the theme engine that your tree makes alternating colors
11832  * useful from a functional standpoint (since it has lots of columns,
11833  * generally).
11834  *
11835  **/
11836 void
11837 gtk_tree_view_set_rules_hint (GtkTreeView  *tree_view,
11838                               gboolean      setting)
11839 {
11840   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
11841
11842   setting = setting != FALSE;
11843
11844   if (tree_view->priv->has_rules != setting)
11845     {
11846       tree_view->priv->has_rules = setting;
11847       gtk_widget_queue_draw (GTK_WIDGET (tree_view));
11848     }
11849
11850   g_object_notify (G_OBJECT (tree_view), "rules-hint");
11851 }
11852
11853 /**
11854  * gtk_tree_view_get_rules_hint
11855  * @tree_view: a #GtkTreeView
11856  *
11857  * Gets the setting set by gtk_tree_view_set_rules_hint().
11858  *
11859  * Return value: %TRUE if rules are useful for the user of this tree
11860  **/
11861 gboolean
11862 gtk_tree_view_get_rules_hint (GtkTreeView  *tree_view)
11863 {
11864   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), FALSE);
11865
11866   return tree_view->priv->has_rules;
11867 }
11868
11869 /* Public Column functions
11870  */
11871
11872 /**
11873  * gtk_tree_view_append_column:
11874  * @tree_view: A #GtkTreeView.
11875  * @column: The #GtkTreeViewColumn to add.
11876  *
11877  * Appends @column to the list of columns. If @tree_view has "fixed_height"
11878  * mode enabled, then @column must have its "sizing" property set to be
11879  * GTK_TREE_VIEW_COLUMN_FIXED.
11880  *
11881  * Return value: The number of columns in @tree_view after appending.
11882  **/
11883 gint
11884 gtk_tree_view_append_column (GtkTreeView       *tree_view,
11885                              GtkTreeViewColumn *column)
11886 {
11887   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), -1);
11888   g_return_val_if_fail (GTK_IS_TREE_VIEW_COLUMN (column), -1);
11889   g_return_val_if_fail (gtk_tree_view_column_get_tree_view (column) == NULL, -1);
11890
11891   return gtk_tree_view_insert_column (tree_view, column, -1);
11892 }
11893
11894 void
11895 _gtk_tree_view_reset_header_styles (GtkTreeView *tree_view)
11896 {
11897   GList *columns;
11898
11899   for (columns = tree_view->priv->columns; columns; columns = columns->next)
11900     {
11901       GtkTreeViewColumn *column = columns->data;
11902       GtkWidget *header_widget;
11903
11904       if (gtk_tree_view_column_get_visible (column))
11905         continue;
11906
11907       header_widget = gtk_tree_view_column_get_widget (column);
11908
11909       if (!header_widget)
11910         header_widget = gtk_tree_view_column_get_button (column);
11911
11912       gtk_widget_reset_style (header_widget);
11913     }
11914 }
11915
11916
11917 /**
11918  * gtk_tree_view_remove_column:
11919  * @tree_view: A #GtkTreeView.
11920  * @column: The #GtkTreeViewColumn to remove.
11921  *
11922  * Removes @column from @tree_view.
11923  *
11924  * Return value: The number of columns in @tree_view after removing.
11925  **/
11926 gint
11927 gtk_tree_view_remove_column (GtkTreeView       *tree_view,
11928                              GtkTreeViewColumn *column)
11929 {
11930   guint position;
11931
11932   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), -1);
11933   g_return_val_if_fail (GTK_IS_TREE_VIEW_COLUMN (column), -1);
11934   g_return_val_if_fail (gtk_tree_view_column_get_tree_view (column) == GTK_WIDGET (tree_view), -1);
11935
11936   if (tree_view->priv->focus_column == column)
11937     tree_view->priv->focus_column = NULL;
11938
11939   if (tree_view->priv->edited_column == column)
11940     {
11941       gtk_tree_view_stop_editing (tree_view, TRUE);
11942
11943       /* no need to, but just to be sure ... */
11944       tree_view->priv->edited_column = NULL;
11945     }
11946
11947   if (tree_view->priv->expander_column == column)
11948     tree_view->priv->expander_column = NULL;
11949
11950   g_signal_handlers_disconnect_by_func (column,
11951                                         G_CALLBACK (column_sizing_notify),
11952                                         tree_view);
11953
11954   _gtk_tree_view_column_unset_tree_view (column);
11955
11956   position = g_list_index (tree_view->priv->columns, column);
11957
11958   tree_view->priv->columns = g_list_remove (tree_view->priv->columns, column);
11959   tree_view->priv->n_columns--;
11960
11961   if (gtk_widget_get_realized (GTK_WIDGET (tree_view)))
11962     {
11963       GList *list;
11964
11965       _gtk_tree_view_column_unrealize_button (column);
11966       for (list = tree_view->priv->columns; list; list = list->next)
11967         {
11968           GtkTreeViewColumn *tmp_column;
11969
11970           tmp_column = GTK_TREE_VIEW_COLUMN (list->data);
11971           if (gtk_tree_view_column_get_visible (tmp_column))
11972             _gtk_tree_view_column_cell_set_dirty (tmp_column, TRUE);
11973         }
11974
11975       if (tree_view->priv->n_columns == 0 &&
11976           gtk_tree_view_get_headers_visible (tree_view))
11977         gdk_window_hide (tree_view->priv->header_window);
11978
11979       gtk_widget_queue_resize (GTK_WIDGET (tree_view));
11980     }
11981
11982   _gtk_tree_view_reset_header_styles (tree_view);
11983
11984   _gtk_tree_view_accessible_remove_column (tree_view, column, position);
11985
11986   g_object_unref (column);
11987   g_signal_emit (tree_view, tree_view_signals[COLUMNS_CHANGED], 0);
11988
11989   return tree_view->priv->n_columns;
11990 }
11991
11992 /**
11993  * gtk_tree_view_insert_column:
11994  * @tree_view: A #GtkTreeView.
11995  * @column: The #GtkTreeViewColumn to be inserted.
11996  * @position: The position to insert @column in.
11997  *
11998  * This inserts the @column into the @tree_view at @position.  If @position is
11999  * -1, then the column is inserted at the end. If @tree_view has
12000  * "fixed_height" mode enabled, then @column must have its "sizing" property
12001  * set to be GTK_TREE_VIEW_COLUMN_FIXED.
12002  *
12003  * Return value: The number of columns in @tree_view after insertion.
12004  **/
12005 gint
12006 gtk_tree_view_insert_column (GtkTreeView       *tree_view,
12007                              GtkTreeViewColumn *column,
12008                              gint               position)
12009 {
12010   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), -1);
12011   g_return_val_if_fail (GTK_IS_TREE_VIEW_COLUMN (column), -1);
12012   g_return_val_if_fail (gtk_tree_view_column_get_tree_view (column) == NULL, -1);
12013
12014   if (tree_view->priv->fixed_height_mode)
12015     g_return_val_if_fail (gtk_tree_view_column_get_sizing (column)
12016                           == GTK_TREE_VIEW_COLUMN_FIXED, -1);
12017
12018   if (position < 0 || position > tree_view->priv->n_columns)
12019     position = tree_view->priv->n_columns;
12020
12021   g_object_ref_sink (column);
12022
12023   if (tree_view->priv->n_columns == 0 &&
12024       gtk_widget_get_realized (GTK_WIDGET (tree_view)) &&
12025       gtk_tree_view_get_headers_visible (tree_view))
12026     {
12027       gdk_window_show (tree_view->priv->header_window);
12028     }
12029
12030   g_signal_connect (column, "notify::sizing",
12031                     G_CALLBACK (column_sizing_notify), tree_view);
12032
12033   tree_view->priv->columns = g_list_insert (tree_view->priv->columns,
12034                                             column, position);
12035   tree_view->priv->n_columns++;
12036
12037   _gtk_tree_view_column_set_tree_view (column, tree_view);
12038
12039   if (gtk_widget_get_realized (GTK_WIDGET (tree_view)))
12040     {
12041       GList *list;
12042
12043       _gtk_tree_view_column_realize_button (column);
12044
12045       for (list = tree_view->priv->columns; list; list = list->next)
12046         {
12047           column = GTK_TREE_VIEW_COLUMN (list->data);
12048           if (gtk_tree_view_column_get_visible (column))
12049             _gtk_tree_view_column_cell_set_dirty (column, TRUE);
12050         }
12051       gtk_widget_queue_resize (GTK_WIDGET (tree_view));
12052     }
12053
12054   _gtk_tree_view_reset_header_styles (tree_view);
12055
12056   _gtk_tree_view_accessible_add_column (tree_view, column, position);
12057
12058   g_signal_emit (tree_view, tree_view_signals[COLUMNS_CHANGED], 0);
12059
12060   return tree_view->priv->n_columns;
12061 }
12062
12063 /**
12064  * gtk_tree_view_insert_column_with_attributes:
12065  * @tree_view: A #GtkTreeView
12066  * @position: The position to insert the new column in
12067  * @title: The title to set the header to
12068  * @cell: The #GtkCellRenderer
12069  * @...: A %NULL-terminated list of attributes
12070  *
12071  * Creates a new #GtkTreeViewColumn and inserts it into the @tree_view at
12072  * @position.  If @position is -1, then the newly created column is inserted at
12073  * the end.  The column is initialized with the attributes given. If @tree_view
12074  * has "fixed_height" mode enabled, then the new column will have its sizing
12075  * property set to be GTK_TREE_VIEW_COLUMN_FIXED.
12076  *
12077  * Return value: The number of columns in @tree_view after insertion.
12078  **/
12079 gint
12080 gtk_tree_view_insert_column_with_attributes (GtkTreeView     *tree_view,
12081                                              gint             position,
12082                                              const gchar     *title,
12083                                              GtkCellRenderer *cell,
12084                                              ...)
12085 {
12086   GtkTreeViewColumn *column;
12087   gchar *attribute;
12088   va_list args;
12089   gint column_id;
12090
12091   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), -1);
12092
12093   column = gtk_tree_view_column_new ();
12094   if (tree_view->priv->fixed_height_mode)
12095     gtk_tree_view_column_set_sizing (column, GTK_TREE_VIEW_COLUMN_FIXED);
12096
12097   gtk_tree_view_column_set_title (column, title);
12098   gtk_tree_view_column_pack_start (column, cell, TRUE);
12099
12100   va_start (args, cell);
12101
12102   attribute = va_arg (args, gchar *);
12103
12104   while (attribute != NULL)
12105     {
12106       column_id = va_arg (args, gint);
12107       gtk_tree_view_column_add_attribute (column, cell, attribute, column_id);
12108       attribute = va_arg (args, gchar *);
12109     }
12110
12111   va_end (args);
12112
12113   return gtk_tree_view_insert_column (tree_view, column, position);
12114 }
12115
12116 /**
12117  * gtk_tree_view_insert_column_with_data_func:
12118  * @tree_view: a #GtkTreeView
12119  * @position: Position to insert, -1 for append
12120  * @title: column title
12121  * @cell: cell renderer for column
12122  * @func: function to set attributes of cell renderer
12123  * @data: data for @func
12124  * @dnotify: destroy notifier for @data
12125  *
12126  * Convenience function that inserts a new column into the #GtkTreeView
12127  * with the given cell renderer and a #GtkCellDataFunc to set cell renderer
12128  * attributes (normally using data from the model). See also
12129  * gtk_tree_view_column_set_cell_data_func(), gtk_tree_view_column_pack_start().
12130  * If @tree_view has "fixed_height" mode enabled, then the new column will have its
12131  * "sizing" property set to be GTK_TREE_VIEW_COLUMN_FIXED.
12132  *
12133  * Return value: number of columns in the tree view post-insert
12134  **/
12135 gint
12136 gtk_tree_view_insert_column_with_data_func  (GtkTreeView               *tree_view,
12137                                              gint                       position,
12138                                              const gchar               *title,
12139                                              GtkCellRenderer           *cell,
12140                                              GtkTreeCellDataFunc        func,
12141                                              gpointer                   data,
12142                                              GDestroyNotify             dnotify)
12143 {
12144   GtkTreeViewColumn *column;
12145
12146   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), -1);
12147
12148   column = gtk_tree_view_column_new ();
12149   if (tree_view->priv->fixed_height_mode)
12150     gtk_tree_view_column_set_sizing (column, GTK_TREE_VIEW_COLUMN_FIXED);
12151
12152   gtk_tree_view_column_set_title (column, title);
12153   gtk_tree_view_column_pack_start (column, cell, TRUE);
12154   gtk_tree_view_column_set_cell_data_func (column, cell, func, data, dnotify);
12155
12156   return gtk_tree_view_insert_column (tree_view, column, position);
12157 }
12158
12159 /**
12160  * gtk_tree_view_get_n_columns:
12161  * @tree_view: a #GtkTreeView
12162  *
12163  * Queries the number of columns in the given @tree_view.
12164  *
12165  * Returns: The number of columns in the @tree_view
12166  *
12167  * Since: 3.4
12168  **/
12169 guint
12170 gtk_tree_view_get_n_columns (GtkTreeView *tree_view)
12171 {
12172   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), 0);
12173
12174   return tree_view->priv->n_columns;
12175 }
12176
12177 /**
12178  * gtk_tree_view_get_column:
12179  * @tree_view: A #GtkTreeView.
12180  * @n: The position of the column, counting from 0.
12181  *
12182  * Gets the #GtkTreeViewColumn at the given position in the #tree_view.
12183  *
12184  * Return value: (transfer none): The #GtkTreeViewColumn, or %NULL if the
12185  *     position is outside the range of columns.
12186  **/
12187 GtkTreeViewColumn *
12188 gtk_tree_view_get_column (GtkTreeView *tree_view,
12189                           gint         n)
12190 {
12191   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), NULL);
12192
12193   if (n < 0 || n >= tree_view->priv->n_columns)
12194     return NULL;
12195
12196   if (tree_view->priv->columns == NULL)
12197     return NULL;
12198
12199   return GTK_TREE_VIEW_COLUMN (g_list_nth (tree_view->priv->columns, n)->data);
12200 }
12201
12202 /**
12203  * gtk_tree_view_get_columns:
12204  * @tree_view: A #GtkTreeView
12205  *
12206  * Returns a #GList of all the #GtkTreeViewColumn s currently in @tree_view.
12207  * The returned list must be freed with g_list_free ().
12208  *
12209  * Return value: (element-type GtkTreeViewColumn) (transfer container): A list of #GtkTreeViewColumn s
12210  **/
12211 GList *
12212 gtk_tree_view_get_columns (GtkTreeView *tree_view)
12213 {
12214   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), NULL);
12215
12216   return g_list_copy (tree_view->priv->columns);
12217 }
12218
12219 /**
12220  * gtk_tree_view_move_column_after:
12221  * @tree_view: A #GtkTreeView
12222  * @column: The #GtkTreeViewColumn to be moved.
12223  * @base_column: (allow-none): The #GtkTreeViewColumn to be moved relative to, or %NULL.
12224  *
12225  * Moves @column to be after to @base_column.  If @base_column is %NULL, then
12226  * @column is placed in the first position.
12227  **/
12228 void
12229 gtk_tree_view_move_column_after (GtkTreeView       *tree_view,
12230                                  GtkTreeViewColumn *column,
12231                                  GtkTreeViewColumn *base_column)
12232 {
12233   GList *column_list_el, *base_el = NULL;
12234
12235   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
12236
12237   column_list_el = g_list_find (tree_view->priv->columns, column);
12238   g_return_if_fail (column_list_el != NULL);
12239
12240   if (base_column)
12241     {
12242       base_el = g_list_find (tree_view->priv->columns, base_column);
12243       g_return_if_fail (base_el != NULL);
12244     }
12245
12246   if (column_list_el->prev == base_el)
12247     return;
12248
12249   tree_view->priv->columns = g_list_remove_link (tree_view->priv->columns, column_list_el);
12250   if (base_el == NULL)
12251     {
12252       column_list_el->prev = NULL;
12253       column_list_el->next = tree_view->priv->columns;
12254       if (column_list_el->next)
12255         column_list_el->next->prev = column_list_el;
12256       tree_view->priv->columns = column_list_el;
12257     }
12258   else
12259     {
12260       column_list_el->prev = base_el;
12261       column_list_el->next = base_el->next;
12262       if (column_list_el->next)
12263         column_list_el->next->prev = column_list_el;
12264       base_el->next = column_list_el;
12265     }
12266
12267   if (gtk_widget_get_realized (GTK_WIDGET (tree_view)))
12268     {
12269       gtk_widget_queue_resize (GTK_WIDGET (tree_view));
12270       gtk_tree_view_size_allocate_columns (GTK_WIDGET (tree_view), NULL);
12271     }
12272
12273   _gtk_tree_view_reset_header_styles (tree_view);
12274
12275   _gtk_tree_view_accessible_reorder_column (tree_view, column);
12276
12277   g_signal_emit (tree_view, tree_view_signals[COLUMNS_CHANGED], 0);
12278 }
12279
12280 /**
12281  * gtk_tree_view_set_expander_column:
12282  * @tree_view: A #GtkTreeView
12283  * @column: %NULL, or the column to draw the expander arrow at.
12284  *
12285  * Sets the column to draw the expander arrow at. It must be in @tree_view.
12286  * If @column is %NULL, then the expander arrow is always at the first
12287  * visible column.
12288  *
12289  * If you do not want expander arrow to appear in your tree, set the
12290  * expander column to a hidden column.
12291  **/
12292 void
12293 gtk_tree_view_set_expander_column (GtkTreeView       *tree_view,
12294                                    GtkTreeViewColumn *column)
12295 {
12296   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
12297   g_return_if_fail (column == NULL || GTK_IS_TREE_VIEW_COLUMN (column));
12298   g_return_if_fail (column == NULL || gtk_tree_view_column_get_tree_view (column) == GTK_WIDGET (tree_view));
12299
12300   if (tree_view->priv->expander_column != column)
12301     {
12302       tree_view->priv->expander_column = column;
12303       g_object_notify (G_OBJECT (tree_view), "expander-column");
12304     }
12305 }
12306
12307 /**
12308  * gtk_tree_view_get_expander_column:
12309  * @tree_view: A #GtkTreeView
12310  *
12311  * Returns the column that is the current expander column.
12312  * This column has the expander arrow drawn next to it.
12313  *
12314  * Return value: (transfer none): The expander column.
12315  **/
12316 GtkTreeViewColumn *
12317 gtk_tree_view_get_expander_column (GtkTreeView *tree_view)
12318 {
12319   GList *list;
12320
12321   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), NULL);
12322
12323   for (list = tree_view->priv->columns; list; list = list->next)
12324     if (gtk_tree_view_is_expander_column (tree_view, GTK_TREE_VIEW_COLUMN (list->data)))
12325       return (GtkTreeViewColumn *) list->data;
12326   return NULL;
12327 }
12328
12329
12330 /**
12331  * gtk_tree_view_set_column_drag_function:
12332  * @tree_view: A #GtkTreeView.
12333  * @func: (allow-none): A function to determine which columns are reorderable, or %NULL.
12334  * @user_data: (allow-none): User data to be passed to @func, or %NULL
12335  * @destroy: (allow-none): Destroy notifier for @user_data, or %NULL
12336  *
12337  * Sets a user function for determining where a column may be dropped when
12338  * dragged.  This function is called on every column pair in turn at the
12339  * beginning of a column drag to determine where a drop can take place.  The
12340  * arguments passed to @func are: the @tree_view, the #GtkTreeViewColumn being
12341  * dragged, the two #GtkTreeViewColumn s determining the drop spot, and
12342  * @user_data.  If either of the #GtkTreeViewColumn arguments for the drop spot
12343  * are %NULL, then they indicate an edge.  If @func is set to be %NULL, then
12344  * @tree_view reverts to the default behavior of allowing all columns to be
12345  * dropped everywhere.
12346  **/
12347 void
12348 gtk_tree_view_set_column_drag_function (GtkTreeView               *tree_view,
12349                                         GtkTreeViewColumnDropFunc  func,
12350                                         gpointer                   user_data,
12351                                         GDestroyNotify             destroy)
12352 {
12353   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
12354
12355   if (tree_view->priv->column_drop_func_data_destroy)
12356     tree_view->priv->column_drop_func_data_destroy (tree_view->priv->column_drop_func_data);
12357
12358   tree_view->priv->column_drop_func = func;
12359   tree_view->priv->column_drop_func_data = user_data;
12360   tree_view->priv->column_drop_func_data_destroy = destroy;
12361 }
12362
12363 /**
12364  * gtk_tree_view_scroll_to_point:
12365  * @tree_view: a #GtkTreeView
12366  * @tree_x: X coordinate of new top-left pixel of visible area, or -1
12367  * @tree_y: Y coordinate of new top-left pixel of visible area, or -1
12368  *
12369  * Scrolls the tree view such that the top-left corner of the visible
12370  * area is @tree_x, @tree_y, where @tree_x and @tree_y are specified
12371  * in tree coordinates.  The @tree_view must be realized before
12372  * this function is called.  If it isn't, you probably want to be
12373  * using gtk_tree_view_scroll_to_cell().
12374  *
12375  * If either @tree_x or @tree_y are -1, then that direction isn't scrolled.
12376  **/
12377 void
12378 gtk_tree_view_scroll_to_point (GtkTreeView *tree_view,
12379                                gint         tree_x,
12380                                gint         tree_y)
12381 {
12382   GtkAdjustment *hadj;
12383   GtkAdjustment *vadj;
12384
12385   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
12386   g_return_if_fail (gtk_widget_get_realized (GTK_WIDGET (tree_view)));
12387
12388   hadj = tree_view->priv->hadjustment;
12389   vadj = tree_view->priv->vadjustment;
12390
12391   if (tree_x != -1)
12392     gtk_adjustment_set_value (hadj, tree_x);
12393   if (tree_y != -1)
12394     gtk_adjustment_set_value (vadj, tree_y);
12395 }
12396
12397 /**
12398  * gtk_tree_view_scroll_to_cell:
12399  * @tree_view: A #GtkTreeView.
12400  * @path: (allow-none): The path of the row to move to, or %NULL.
12401  * @column: (allow-none): The #GtkTreeViewColumn to move horizontally to, or %NULL.
12402  * @use_align: whether to use alignment arguments, or %FALSE.
12403  * @row_align: The vertical alignment of the row specified by @path.
12404  * @col_align: The horizontal alignment of the column specified by @column.
12405  *
12406  * Moves the alignments of @tree_view to the position specified by @column and
12407  * @path.  If @column is %NULL, then no horizontal scrolling occurs.  Likewise,
12408  * if @path is %NULL no vertical scrolling occurs.  At a minimum, one of @column
12409  * or @path need to be non-%NULL.  @row_align determines where the row is
12410  * placed, and @col_align determines where @column is placed.  Both are expected
12411  * to be between 0.0 and 1.0. 0.0 means left/top alignment, 1.0 means
12412  * right/bottom alignment, 0.5 means center.
12413  *
12414  * If @use_align is %FALSE, then the alignment arguments are ignored, and the
12415  * tree does the minimum amount of work to scroll the cell onto the screen.
12416  * This means that the cell will be scrolled to the edge closest to its current
12417  * position.  If the cell is currently visible on the screen, nothing is done.
12418  *
12419  * This function only works if the model is set, and @path is a valid row on the
12420  * model.  If the model changes before the @tree_view is realized, the centered
12421  * path will be modified to reflect this change.
12422  **/
12423 void
12424 gtk_tree_view_scroll_to_cell (GtkTreeView       *tree_view,
12425                               GtkTreePath       *path,
12426                               GtkTreeViewColumn *column,
12427                               gboolean           use_align,
12428                               gfloat             row_align,
12429                               gfloat             col_align)
12430 {
12431   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
12432   g_return_if_fail (tree_view->priv->model != NULL);
12433   g_return_if_fail (tree_view->priv->tree != NULL);
12434   g_return_if_fail (row_align >= 0.0 && row_align <= 1.0);
12435   g_return_if_fail (col_align >= 0.0 && col_align <= 1.0);
12436   g_return_if_fail (path != NULL || column != NULL);
12437
12438 #if 0
12439   g_print ("gtk_tree_view_scroll_to_cell:\npath: %s\ncolumn: %s\nuse_align: %d\nrow_align: %f\ncol_align: %f\n",
12440            gtk_tree_path_to_string (path), column?"non-null":"null", use_align, row_align, col_align);
12441 #endif
12442   row_align = CLAMP (row_align, 0.0, 1.0);
12443   col_align = CLAMP (col_align, 0.0, 1.0);
12444
12445
12446   /* Note: Despite the benefits that come from having one code path for the
12447    * scrolling code, we short-circuit validate_visible_area's immplementation as
12448    * it is much slower than just going to the point.
12449    */
12450   if (!gtk_widget_get_visible (GTK_WIDGET (tree_view)) ||
12451       !gtk_widget_get_realized (GTK_WIDGET (tree_view)) ||
12452       _gtk_widget_get_alloc_needed (GTK_WIDGET (tree_view)) ||
12453       GTK_RBNODE_FLAG_SET (tree_view->priv->tree->root, GTK_RBNODE_DESCENDANTS_INVALID))
12454     {
12455       if (tree_view->priv->scroll_to_path)
12456         gtk_tree_row_reference_free (tree_view->priv->scroll_to_path);
12457
12458       tree_view->priv->scroll_to_path = NULL;
12459       tree_view->priv->scroll_to_column = NULL;
12460
12461       if (path)
12462         tree_view->priv->scroll_to_path = gtk_tree_row_reference_new_proxy (G_OBJECT (tree_view), tree_view->priv->model, path);
12463       if (column)
12464         tree_view->priv->scroll_to_column = column;
12465       tree_view->priv->scroll_to_use_align = use_align;
12466       tree_view->priv->scroll_to_row_align = row_align;
12467       tree_view->priv->scroll_to_col_align = col_align;
12468
12469       install_presize_handler (tree_view);
12470     }
12471   else
12472     {
12473       GdkRectangle cell_rect;
12474       GdkRectangle vis_rect;
12475       gint dest_x, dest_y;
12476
12477       gtk_tree_view_get_background_area (tree_view, path, column, &cell_rect);
12478       gtk_tree_view_get_visible_rect (tree_view, &vis_rect);
12479
12480       cell_rect.y = TREE_WINDOW_Y_TO_RBTREE_Y (tree_view, cell_rect.y);
12481
12482       dest_x = vis_rect.x;
12483       dest_y = vis_rect.y;
12484
12485       if (column)
12486         {
12487           if (use_align)
12488             {
12489               dest_x = cell_rect.x - ((vis_rect.width - cell_rect.width) * col_align);
12490             }
12491           else
12492             {
12493               if (cell_rect.x < vis_rect.x)
12494                 dest_x = cell_rect.x;
12495               if (cell_rect.x + cell_rect.width > vis_rect.x + vis_rect.width)
12496                 dest_x = cell_rect.x + cell_rect.width - vis_rect.width;
12497             }
12498         }
12499
12500       if (path)
12501         {
12502           if (use_align)
12503             {
12504               dest_y = cell_rect.y - ((vis_rect.height - cell_rect.height) * row_align);
12505               dest_y = MAX (dest_y, 0);
12506             }
12507           else
12508             {
12509               if (cell_rect.y < vis_rect.y)
12510                 dest_y = cell_rect.y;
12511               if (cell_rect.y + cell_rect.height > vis_rect.y + vis_rect.height)
12512                 dest_y = cell_rect.y + cell_rect.height - vis_rect.height;
12513             }
12514         }
12515
12516       gtk_tree_view_scroll_to_point (tree_view, dest_x, dest_y);
12517     }
12518 }
12519
12520 /**
12521  * gtk_tree_view_row_activated:
12522  * @tree_view: A #GtkTreeView
12523  * @path: The #GtkTreePath to be activated.
12524  * @column: The #GtkTreeViewColumn to be activated.
12525  *
12526  * Activates the cell determined by @path and @column.
12527  **/
12528 void
12529 gtk_tree_view_row_activated (GtkTreeView       *tree_view,
12530                              GtkTreePath       *path,
12531                              GtkTreeViewColumn *column)
12532 {
12533   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
12534
12535   g_signal_emit (tree_view, tree_view_signals[ROW_ACTIVATED], 0, path, column);
12536 }
12537
12538
12539 static void
12540 gtk_tree_view_expand_all_emission_helper (GtkRBTree *tree,
12541                                           GtkRBNode *node,
12542                                           gpointer   data)
12543 {
12544   GtkTreeView *tree_view = data;
12545
12546   if ((node->flags & GTK_RBNODE_IS_PARENT) == GTK_RBNODE_IS_PARENT &&
12547       node->children)
12548     {
12549       GtkTreePath *path;
12550       GtkTreeIter iter;
12551
12552       path = _gtk_tree_view_find_path (tree_view, tree, node);
12553       gtk_tree_model_get_iter (tree_view->priv->model, &iter, path);
12554
12555       g_signal_emit (tree_view, tree_view_signals[ROW_EXPANDED], 0, &iter, path);
12556
12557       gtk_tree_path_free (path);
12558     }
12559
12560   if (node->children)
12561     _gtk_rbtree_traverse (node->children,
12562                           node->children->root,
12563                           G_PRE_ORDER,
12564                           gtk_tree_view_expand_all_emission_helper,
12565                           tree_view);
12566 }
12567
12568 /**
12569  * gtk_tree_view_expand_all:
12570  * @tree_view: A #GtkTreeView.
12571  *
12572  * Recursively expands all nodes in the @tree_view.
12573  **/
12574 void
12575 gtk_tree_view_expand_all (GtkTreeView *tree_view)
12576 {
12577   GtkTreePath *path;
12578   GtkRBTree *tree;
12579   GtkRBNode *node;
12580
12581   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
12582
12583   if (tree_view->priv->tree == NULL)
12584     return;
12585
12586   path = gtk_tree_path_new_first ();
12587   _gtk_tree_view_find_node (tree_view, path, &tree, &node);
12588
12589   while (node)
12590     {
12591       gtk_tree_view_real_expand_row (tree_view, path, tree, node, TRUE, FALSE);
12592       node = _gtk_rbtree_next (tree, node);
12593       gtk_tree_path_next (path);
12594   }
12595
12596   gtk_tree_path_free (path);
12597 }
12598
12599 /**
12600  * gtk_tree_view_collapse_all:
12601  * @tree_view: A #GtkTreeView.
12602  *
12603  * Recursively collapses all visible, expanded nodes in @tree_view.
12604  **/
12605 void
12606 gtk_tree_view_collapse_all (GtkTreeView *tree_view)
12607 {
12608   GtkRBTree *tree;
12609   GtkRBNode *node;
12610   GtkTreePath *path;
12611   gint *indices;
12612
12613   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
12614
12615   if (tree_view->priv->tree == NULL)
12616     return;
12617
12618   path = gtk_tree_path_new ();
12619   gtk_tree_path_down (path);
12620   indices = gtk_tree_path_get_indices (path);
12621
12622   tree = tree_view->priv->tree;
12623   node = tree->root;
12624   while (node && node->left != tree->nil)
12625     node = node->left;
12626
12627   while (node)
12628     {
12629       if (node->children)
12630         gtk_tree_view_real_collapse_row (tree_view, path, tree, node, FALSE);
12631       indices[0]++;
12632       node = _gtk_rbtree_next (tree, node);
12633     }
12634
12635   gtk_tree_path_free (path);
12636 }
12637
12638 /**
12639  * gtk_tree_view_expand_to_path:
12640  * @tree_view: A #GtkTreeView.
12641  * @path: path to a row.
12642  *
12643  * Expands the row at @path. This will also expand all parent rows of
12644  * @path as necessary.
12645  *
12646  * Since: 2.2
12647  **/
12648 void
12649 gtk_tree_view_expand_to_path (GtkTreeView *tree_view,
12650                               GtkTreePath *path)
12651 {
12652   gint i, depth;
12653   gint *indices;
12654   GtkTreePath *tmp;
12655
12656   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
12657   g_return_if_fail (path != NULL);
12658
12659   depth = gtk_tree_path_get_depth (path);
12660   indices = gtk_tree_path_get_indices (path);
12661
12662   tmp = gtk_tree_path_new ();
12663   g_return_if_fail (tmp != NULL);
12664
12665   for (i = 0; i < depth; i++)
12666     {
12667       gtk_tree_path_append_index (tmp, indices[i]);
12668       gtk_tree_view_expand_row (tree_view, tmp, FALSE);
12669     }
12670
12671   gtk_tree_path_free (tmp);
12672 }
12673
12674 /* FIXME the bool return values for expand_row and collapse_row are
12675  * not analagous; they should be TRUE if the row had children and
12676  * was not already in the requested state.
12677  */
12678
12679
12680 static gboolean
12681 gtk_tree_view_real_expand_row (GtkTreeView *tree_view,
12682                                GtkTreePath *path,
12683                                GtkRBTree   *tree,
12684                                GtkRBNode   *node,
12685                                gboolean     open_all,
12686                                gboolean     animate)
12687 {
12688   GtkTreeIter iter;
12689   GtkTreeIter temp;
12690   gboolean expand;
12691
12692   if (animate)
12693     g_object_get (gtk_widget_get_settings (GTK_WIDGET (tree_view)),
12694                   "gtk-enable-animations", &animate,
12695                   NULL);
12696
12697   remove_auto_expand_timeout (tree_view);
12698
12699   if (node->children && !open_all)
12700     return FALSE;
12701
12702   if (! GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_PARENT))
12703     return FALSE;
12704
12705   gtk_tree_model_get_iter (tree_view->priv->model, &iter, path);
12706   if (! gtk_tree_model_iter_has_child (tree_view->priv->model, &iter))
12707     return FALSE;
12708
12709
12710    if (node->children && open_all)
12711     {
12712       gboolean retval = FALSE;
12713       GtkTreePath *tmp_path = gtk_tree_path_copy (path);
12714
12715       gtk_tree_path_append_index (tmp_path, 0);
12716       tree = node->children;
12717       node = tree->root;
12718       while (node->left != tree->nil)
12719         node = node->left;
12720       /* try to expand the children */
12721       do
12722         {
12723          gboolean t;
12724          t = gtk_tree_view_real_expand_row (tree_view, tmp_path, tree, node,
12725                                             TRUE, animate);
12726          if (t)
12727            retval = TRUE;
12728
12729          gtk_tree_path_next (tmp_path);
12730          node = _gtk_rbtree_next (tree, node);
12731        }
12732       while (node != NULL);
12733
12734       gtk_tree_path_free (tmp_path);
12735
12736       return retval;
12737     }
12738
12739   g_signal_emit (tree_view, tree_view_signals[TEST_EXPAND_ROW], 0, &iter, path, &expand);
12740
12741   if (!gtk_tree_model_iter_has_child (tree_view->priv->model, &iter))
12742     return FALSE;
12743
12744   if (expand)
12745     return FALSE;
12746
12747   node->children = _gtk_rbtree_new ();
12748   node->children->parent_tree = tree;
12749   node->children->parent_node = node;
12750
12751   gtk_tree_model_iter_children (tree_view->priv->model, &temp, &iter);
12752
12753   gtk_tree_view_build_tree (tree_view,
12754                             node->children,
12755                             &temp,
12756                             gtk_tree_path_get_depth (path) + 1,
12757                             open_all);
12758
12759   if (animate)
12760     {
12761       GtkStyleContext *context;
12762
12763       context = gtk_widget_get_style_context (GTK_WIDGET (tree_view));
12764
12765       gtk_style_context_save (context);
12766       gtk_style_context_add_class (context, GTK_STYLE_CLASS_EXPANDER);
12767
12768       gtk_style_context_notify_state_change (context, tree_view->priv->bin_window,
12769                                              node, GTK_STATE_ACTIVE, TRUE);
12770
12771       _gtk_style_context_invalidate_animation_areas (context);
12772       gtk_style_context_restore (context);
12773     }
12774
12775   install_presize_handler (tree_view);
12776
12777   g_signal_emit (tree_view, tree_view_signals[ROW_EXPANDED], 0, &iter, path);
12778   if (open_all && node->children)
12779     {
12780       _gtk_rbtree_traverse (node->children,
12781                             node->children->root,
12782                             G_PRE_ORDER,
12783                             gtk_tree_view_expand_all_emission_helper,
12784                             tree_view);
12785     }
12786   return TRUE;
12787 }
12788
12789
12790 /**
12791  * gtk_tree_view_expand_row:
12792  * @tree_view: a #GtkTreeView
12793  * @path: path to a row
12794  * @open_all: whether to recursively expand, or just expand immediate children
12795  *
12796  * Opens the row so its children are visible.
12797  *
12798  * Return value: %TRUE if the row existed and had children
12799  **/
12800 gboolean
12801 gtk_tree_view_expand_row (GtkTreeView *tree_view,
12802                           GtkTreePath *path,
12803                           gboolean     open_all)
12804 {
12805   GtkRBTree *tree;
12806   GtkRBNode *node;
12807
12808   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), FALSE);
12809   g_return_val_if_fail (tree_view->priv->model != NULL, FALSE);
12810   g_return_val_if_fail (path != NULL, FALSE);
12811
12812   if (_gtk_tree_view_find_node (tree_view,
12813                                 path,
12814                                 &tree,
12815                                 &node))
12816     return FALSE;
12817
12818   if (tree != NULL)
12819     return gtk_tree_view_real_expand_row (tree_view, path, tree, node, open_all, FALSE);
12820   else
12821     return FALSE;
12822 }
12823
12824 static gboolean
12825 gtk_tree_view_real_collapse_row (GtkTreeView *tree_view,
12826                                  GtkTreePath *path,
12827                                  GtkRBTree   *tree,
12828                                  GtkRBNode   *node,
12829                                  gboolean     animate)
12830 {
12831   GtkTreeIter iter;
12832   GtkTreeIter children;
12833   gboolean collapse;
12834   gint x, y;
12835   GList *list;
12836   GdkWindow *child;
12837
12838   if (animate)
12839     g_object_get (gtk_widget_get_settings (GTK_WIDGET (tree_view)),
12840                   "gtk-enable-animations", &animate,
12841                   NULL);
12842
12843   remove_auto_expand_timeout (tree_view);
12844
12845   if (node->children == NULL)
12846     return FALSE;
12847   gtk_tree_model_get_iter (tree_view->priv->model, &iter, path);
12848
12849   g_signal_emit (tree_view, tree_view_signals[TEST_COLLAPSE_ROW], 0, &iter, path, &collapse);
12850
12851   if (collapse)
12852     return FALSE;
12853
12854   /* if the prelighted node is a child of us, we want to unprelight it.  We have
12855    * a chance to prelight the correct node below */
12856
12857   if (tree_view->priv->prelight_tree)
12858     {
12859       GtkRBTree *parent_tree;
12860       GtkRBNode *parent_node;
12861
12862       parent_tree = tree_view->priv->prelight_tree->parent_tree;
12863       parent_node = tree_view->priv->prelight_tree->parent_node;
12864       while (parent_tree)
12865         {
12866           if (parent_tree == tree && parent_node == node)
12867             {
12868               ensure_unprelighted (tree_view);
12869               break;
12870             }
12871           parent_node = parent_tree->parent_node;
12872           parent_tree = parent_tree->parent_tree;
12873         }
12874     }
12875
12876   TREE_VIEW_INTERNAL_ASSERT (gtk_tree_model_iter_children (tree_view->priv->model, &children, &iter), FALSE);
12877
12878   for (list = tree_view->priv->columns; list; list = list->next)
12879     {
12880       GtkTreeViewColumn *column = list->data;
12881
12882       if (gtk_tree_view_column_get_visible (column) == FALSE)
12883         continue;
12884       if (gtk_tree_view_column_get_sizing (column) == GTK_TREE_VIEW_COLUMN_AUTOSIZE)
12885         _gtk_tree_view_column_cell_set_dirty (column, TRUE);
12886     }
12887
12888   if (tree_view->priv->destroy_count_func)
12889     {
12890       GtkTreePath *child_path;
12891       gint child_count = 0;
12892       child_path = gtk_tree_path_copy (path);
12893       gtk_tree_path_down (child_path);
12894       if (node->children)
12895         _gtk_rbtree_traverse (node->children, node->children->root, G_POST_ORDER, count_children_helper, &child_count);
12896       tree_view->priv->destroy_count_func (tree_view, child_path, child_count, tree_view->priv->destroy_count_data);
12897       gtk_tree_path_free (child_path);
12898     }
12899
12900   if (gtk_tree_row_reference_valid (tree_view->priv->cursor))
12901     {
12902       GtkTreePath *cursor_path = gtk_tree_row_reference_get_path (tree_view->priv->cursor);
12903
12904       if (gtk_tree_path_is_ancestor (path, cursor_path))
12905         {
12906           gtk_tree_row_reference_free (tree_view->priv->cursor);
12907           tree_view->priv->cursor = gtk_tree_row_reference_new_proxy (G_OBJECT (tree_view),
12908                                                                       tree_view->priv->model,
12909                                                                       path);
12910         }
12911       gtk_tree_path_free (cursor_path);
12912     }
12913
12914   if (gtk_tree_row_reference_valid (tree_view->priv->anchor))
12915     {
12916       GtkTreePath *anchor_path = gtk_tree_row_reference_get_path (tree_view->priv->anchor);
12917       if (gtk_tree_path_is_ancestor (path, anchor_path))
12918         {
12919           gtk_tree_row_reference_free (tree_view->priv->anchor);
12920           tree_view->priv->anchor = NULL;
12921         }
12922       gtk_tree_path_free (anchor_path);
12923     }
12924
12925   /* Stop a pending double click */
12926   tree_view->priv->last_button_x = -1;
12927   tree_view->priv->last_button_y = -1;
12928
12929   _gtk_tree_view_accessible_remove (tree_view, node->children, NULL);
12930
12931   if (gtk_tree_view_unref_and_check_selection_tree (tree_view, node->children))
12932     {
12933       _gtk_rbtree_remove (node->children);
12934       g_signal_emit_by_name (tree_view->priv->selection, "changed");
12935     }
12936   else
12937     _gtk_rbtree_remove (node->children);
12938
12939   if (animate)
12940     {
12941       GtkStyleContext *context;
12942
12943       context = gtk_widget_get_style_context (GTK_WIDGET (tree_view));
12944
12945       gtk_style_context_save (context);
12946       gtk_style_context_add_class (context, GTK_STYLE_CLASS_EXPANDER);
12947
12948       gtk_style_context_notify_state_change (context, tree_view->priv->bin_window,
12949                                              node, GTK_STATE_ACTIVE, FALSE);
12950
12951       _gtk_style_context_invalidate_animation_areas (context);
12952       gtk_style_context_restore (context);
12953     }
12954
12955   if (gtk_widget_get_mapped (GTK_WIDGET (tree_view)))
12956     {
12957       gtk_widget_queue_resize (GTK_WIDGET (tree_view));
12958     }
12959
12960   g_signal_emit (tree_view, tree_view_signals[ROW_COLLAPSED], 0, &iter, path);
12961
12962   if (gtk_widget_get_mapped (GTK_WIDGET (tree_view)))
12963     {
12964       /* now that we've collapsed all rows, we want to try to set the prelight
12965        * again. To do this, we fake a motion event and send it to ourselves. */
12966
12967       child = gdk_window_get_device_position (gdk_window_get_parent (tree_view->priv->bin_window),
12968                                               gdk_device_manager_get_client_pointer (
12969                                                 gdk_display_get_device_manager (
12970                                                   gtk_widget_get_display (GTK_WIDGET (tree_view)))),
12971                                               &x, &y, NULL);
12972       if (child == tree_view->priv->bin_window)
12973         {
12974           GdkEventMotion event;
12975           gint child_x, child_y;
12976
12977           gdk_window_get_position (child, &child_x, &child_y);
12978
12979           event.window = tree_view->priv->bin_window;
12980           event.x = x - child_x;
12981           event.y = y - child_y;
12982
12983           /* despite the fact this isn't a real event, I'm almost positive it will
12984            * never trigger a drag event.  maybe_drag is the only function that uses
12985            * more than just event.x and event.y. */
12986           gtk_tree_view_motion_bin_window (GTK_WIDGET (tree_view), &event);
12987         }
12988     }
12989
12990   return TRUE;
12991 }
12992
12993 /**
12994  * gtk_tree_view_collapse_row:
12995  * @tree_view: a #GtkTreeView
12996  * @path: path to a row in the @tree_view
12997  *
12998  * Collapses a row (hides its child rows, if they exist).
12999  *
13000  * Return value: %TRUE if the row was collapsed.
13001  **/
13002 gboolean
13003 gtk_tree_view_collapse_row (GtkTreeView *tree_view,
13004                             GtkTreePath *path)
13005 {
13006   GtkRBTree *tree;
13007   GtkRBNode *node;
13008
13009   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), FALSE);
13010   g_return_val_if_fail (tree_view->priv->tree != NULL, FALSE);
13011   g_return_val_if_fail (path != NULL, FALSE);
13012
13013   if (_gtk_tree_view_find_node (tree_view,
13014                                 path,
13015                                 &tree,
13016                                 &node))
13017     return FALSE;
13018
13019   if (tree == NULL || node->children == NULL)
13020     return FALSE;
13021
13022   return gtk_tree_view_real_collapse_row (tree_view, path, tree, node, FALSE);
13023 }
13024
13025 static void
13026 gtk_tree_view_map_expanded_rows_helper (GtkTreeView            *tree_view,
13027                                         GtkRBTree              *tree,
13028                                         GtkTreePath            *path,
13029                                         GtkTreeViewMappingFunc  func,
13030                                         gpointer                user_data)
13031 {
13032   GtkRBNode *node;
13033
13034   if (tree == NULL || tree->root == NULL)
13035     return;
13036
13037   node = tree->root;
13038
13039   while (node && node->left != tree->nil)
13040     node = node->left;
13041
13042   while (node)
13043     {
13044       if (node->children)
13045         {
13046           (* func) (tree_view, path, user_data);
13047           gtk_tree_path_down (path);
13048           gtk_tree_view_map_expanded_rows_helper (tree_view, node->children, path, func, user_data);
13049           gtk_tree_path_up (path);
13050         }
13051       gtk_tree_path_next (path);
13052       node = _gtk_rbtree_next (tree, node);
13053     }
13054 }
13055
13056 /**
13057  * gtk_tree_view_map_expanded_rows:
13058  * @tree_view: A #GtkTreeView
13059  * @func: (scope call): A function to be called
13060  * @data: User data to be passed to the function.
13061  *
13062  * Calls @func on all expanded rows.
13063  **/
13064 void
13065 gtk_tree_view_map_expanded_rows (GtkTreeView            *tree_view,
13066                                  GtkTreeViewMappingFunc  func,
13067                                  gpointer                user_data)
13068 {
13069   GtkTreePath *path;
13070
13071   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
13072   g_return_if_fail (func != NULL);
13073
13074   path = gtk_tree_path_new_first ();
13075
13076   gtk_tree_view_map_expanded_rows_helper (tree_view,
13077                                           tree_view->priv->tree,
13078                                           path, func, user_data);
13079
13080   gtk_tree_path_free (path);
13081 }
13082
13083 /**
13084  * gtk_tree_view_row_expanded:
13085  * @tree_view: A #GtkTreeView.
13086  * @path: A #GtkTreePath to test expansion state.
13087  *
13088  * Returns %TRUE if the node pointed to by @path is expanded in @tree_view.
13089  *
13090  * Return value: %TRUE if #path is expanded.
13091  **/
13092 gboolean
13093 gtk_tree_view_row_expanded (GtkTreeView *tree_view,
13094                             GtkTreePath *path)
13095 {
13096   GtkRBTree *tree;
13097   GtkRBNode *node;
13098
13099   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), FALSE);
13100   g_return_val_if_fail (path != NULL, FALSE);
13101
13102   _gtk_tree_view_find_node (tree_view, path, &tree, &node);
13103
13104   if (node == NULL)
13105     return FALSE;
13106
13107   return (node->children != NULL);
13108 }
13109
13110 /**
13111  * gtk_tree_view_get_reorderable:
13112  * @tree_view: a #GtkTreeView
13113  *
13114  * Retrieves whether the user can reorder the tree via drag-and-drop. See
13115  * gtk_tree_view_set_reorderable().
13116  *
13117  * Return value: %TRUE if the tree can be reordered.
13118  **/
13119 gboolean
13120 gtk_tree_view_get_reorderable (GtkTreeView *tree_view)
13121 {
13122   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), FALSE);
13123
13124   return tree_view->priv->reorderable;
13125 }
13126
13127 /**
13128  * gtk_tree_view_set_reorderable:
13129  * @tree_view: A #GtkTreeView.
13130  * @reorderable: %TRUE, if the tree can be reordered.
13131  *
13132  * This function is a convenience function to allow you to reorder
13133  * models that support the #GtkTreeDragSourceIface and the
13134  * #GtkTreeDragDestIface.  Both #GtkTreeStore and #GtkListStore support
13135  * these.  If @reorderable is %TRUE, then the user can reorder the
13136  * model by dragging and dropping rows. The developer can listen to
13137  * these changes by connecting to the model's row_inserted and
13138  * row_deleted signals. The reordering is implemented by setting up
13139  * the tree view as a drag source and destination. Therefore, drag and
13140  * drop can not be used in a reorderable view for any other purpose.
13141  *
13142  * This function does not give you any degree of control over the order -- any
13143  * reordering is allowed.  If more control is needed, you should probably
13144  * handle drag and drop manually.
13145  **/
13146 void
13147 gtk_tree_view_set_reorderable (GtkTreeView *tree_view,
13148                                gboolean     reorderable)
13149 {
13150   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
13151
13152   reorderable = reorderable != FALSE;
13153
13154   if (tree_view->priv->reorderable == reorderable)
13155     return;
13156
13157   if (reorderable)
13158     {
13159       const GtkTargetEntry row_targets[] = {
13160         { "GTK_TREE_MODEL_ROW", GTK_TARGET_SAME_WIDGET, 0 }
13161       };
13162
13163       gtk_tree_view_enable_model_drag_source (tree_view,
13164                                               GDK_BUTTON1_MASK,
13165                                               row_targets,
13166                                               G_N_ELEMENTS (row_targets),
13167                                               GDK_ACTION_MOVE);
13168       gtk_tree_view_enable_model_drag_dest (tree_view,
13169                                             row_targets,
13170                                             G_N_ELEMENTS (row_targets),
13171                                             GDK_ACTION_MOVE);
13172     }
13173   else
13174     {
13175       gtk_tree_view_unset_rows_drag_source (tree_view);
13176       gtk_tree_view_unset_rows_drag_dest (tree_view);
13177     }
13178
13179   tree_view->priv->reorderable = reorderable;
13180
13181   g_object_notify (G_OBJECT (tree_view), "reorderable");
13182 }
13183
13184 static void
13185 gtk_tree_view_real_set_cursor (GtkTreeView     *tree_view,
13186                                GtkTreePath     *path,
13187                                gboolean         clear_and_select,
13188                                gboolean         clamp_node)
13189 {
13190   GtkRBTree *tree = NULL;
13191   GtkRBNode *node = NULL;
13192
13193   if (gtk_tree_row_reference_valid (tree_view->priv->cursor))
13194     {
13195       GtkTreePath *cursor_path;
13196       cursor_path = gtk_tree_row_reference_get_path (tree_view->priv->cursor);
13197       gtk_tree_view_queue_draw_path (tree_view, cursor_path, NULL);
13198       gtk_tree_path_free (cursor_path);
13199     }
13200
13201   gtk_tree_row_reference_free (tree_view->priv->cursor);
13202   tree_view->priv->cursor = NULL;
13203
13204   /* One cannot set the cursor on a separator.   Also, if
13205    * _gtk_tree_view_find_node returns TRUE, it ran out of tree
13206    * before finding the tree and node belonging to path.  The
13207    * path maps to a non-existing path and we will silently bail out.
13208    * We unset tree and node to avoid further processing.
13209    */
13210   if (!row_is_separator (tree_view, NULL, path)
13211       && _gtk_tree_view_find_node (tree_view, path, &tree, &node) == FALSE)
13212     {
13213       tree_view->priv->cursor =
13214           gtk_tree_row_reference_new_proxy (G_OBJECT (tree_view),
13215                                             tree_view->priv->model,
13216                                             path);
13217     }
13218   else
13219     {
13220       tree = NULL;
13221       node = NULL;
13222     }
13223
13224   if (tree != NULL)
13225     {
13226       GtkRBTree *new_tree = NULL;
13227       GtkRBNode *new_node = NULL;
13228
13229       if (clear_and_select && !tree_view->priv->modify_selection_pressed)
13230         {
13231           GtkTreeSelectMode mode = 0;
13232
13233           if (tree_view->priv->extend_selection_pressed)
13234             mode |= GTK_TREE_SELECT_MODE_EXTEND;
13235
13236           _gtk_tree_selection_internal_select_node (tree_view->priv->selection,
13237                                                     node, tree, path, mode,
13238                                                     FALSE);
13239         }
13240
13241       /* We have to re-find tree and node here again, somebody might have
13242        * cleared the node or the whole tree in the GtkTreeSelection::changed
13243        * callback. If the nodes differ we bail out here.
13244        */
13245       _gtk_tree_view_find_node (tree_view, path, &new_tree, &new_node);
13246
13247       if (tree != new_tree || node != new_node)
13248         return;
13249
13250       if (clamp_node)
13251         {
13252           gtk_tree_view_clamp_node_visible (tree_view, tree, node);
13253           _gtk_tree_view_queue_draw_node (tree_view, tree, node, NULL);
13254         }
13255     }
13256
13257   g_signal_emit (tree_view, tree_view_signals[CURSOR_CHANGED], 0);
13258 }
13259
13260 /**
13261  * gtk_tree_view_get_cursor:
13262  * @tree_view: A #GtkTreeView
13263  * @path: (out) (transfer full) (allow-none): A pointer to be filled with the current cursor path, or %NULL
13264  * @focus_column: (out) (transfer none) (allow-none): A pointer to be filled with the current focus column, or %NULL
13265  *
13266  * Fills in @path and @focus_column with the current path and focus column.  If
13267  * the cursor isn't currently set, then *@path will be %NULL.  If no column
13268  * currently has focus, then *@focus_column will be %NULL.
13269  *
13270  * The returned #GtkTreePath must be freed with gtk_tree_path_free() when
13271  * you are done with it.
13272  **/
13273 void
13274 gtk_tree_view_get_cursor (GtkTreeView        *tree_view,
13275                           GtkTreePath       **path,
13276                           GtkTreeViewColumn **focus_column)
13277 {
13278   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
13279
13280   if (path)
13281     {
13282       if (gtk_tree_row_reference_valid (tree_view->priv->cursor))
13283         *path = gtk_tree_row_reference_get_path (tree_view->priv->cursor);
13284       else
13285         *path = NULL;
13286     }
13287
13288   if (focus_column)
13289     {
13290       *focus_column = tree_view->priv->focus_column;
13291     }
13292 }
13293
13294 /**
13295  * gtk_tree_view_set_cursor:
13296  * @tree_view: A #GtkTreeView
13297  * @path: A #GtkTreePath
13298  * @focus_column: (allow-none): A #GtkTreeViewColumn, or %NULL
13299  * @start_editing: %TRUE if the specified cell should start being edited.
13300  *
13301  * Sets the current keyboard focus to be at @path, and selects it.  This is
13302  * useful when you want to focus the user's attention on a particular row.  If
13303  * @focus_column is not %NULL, then focus is given to the column specified by
13304  * it. Additionally, if @focus_column is specified, and @start_editing is
13305  * %TRUE, then editing should be started in the specified cell.
13306  * This function is often followed by @gtk_widget_grab_focus (@tree_view)
13307  * in order to give keyboard focus to the widget.  Please note that editing
13308  * can only happen when the widget is realized.
13309  *
13310  * If @path is invalid for @model, the current cursor (if any) will be unset
13311  * and the function will return without failing.
13312  **/
13313 void
13314 gtk_tree_view_set_cursor (GtkTreeView       *tree_view,
13315                           GtkTreePath       *path,
13316                           GtkTreeViewColumn *focus_column,
13317                           gboolean           start_editing)
13318 {
13319   gtk_tree_view_set_cursor_on_cell (tree_view, path, focus_column,
13320                                     NULL, start_editing);
13321 }
13322
13323 /**
13324  * gtk_tree_view_set_cursor_on_cell:
13325  * @tree_view: A #GtkTreeView
13326  * @path: A #GtkTreePath
13327  * @focus_column: (allow-none): A #GtkTreeViewColumn, or %NULL
13328  * @focus_cell: (allow-none): A #GtkCellRenderer, or %NULL
13329  * @start_editing: %TRUE if the specified cell should start being edited.
13330  *
13331  * Sets the current keyboard focus to be at @path, and selects it.  This is
13332  * useful when you want to focus the user's attention on a particular row.  If
13333  * @focus_column is not %NULL, then focus is given to the column specified by
13334  * it. If @focus_column and @focus_cell are not %NULL, and @focus_column
13335  * contains 2 or more editable or activatable cells, then focus is given to
13336  * the cell specified by @focus_cell. Additionally, if @focus_column is
13337  * specified, and @start_editing is %TRUE, then editing should be started in
13338  * the specified cell.  This function is often followed by
13339  * @gtk_widget_grab_focus (@tree_view) in order to give keyboard focus to the
13340  * widget.  Please note that editing can only happen when the widget is
13341  * realized.
13342  *
13343  * If @path is invalid for @model, the current cursor (if any) will be unset
13344  * and the function will return without failing.
13345  *
13346  * Since: 2.2
13347  **/
13348 void
13349 gtk_tree_view_set_cursor_on_cell (GtkTreeView       *tree_view,
13350                                   GtkTreePath       *path,
13351                                   GtkTreeViewColumn *focus_column,
13352                                   GtkCellRenderer   *focus_cell,
13353                                   gboolean           start_editing)
13354 {
13355   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
13356   g_return_if_fail (path != NULL);
13357   g_return_if_fail (focus_column == NULL || GTK_IS_TREE_VIEW_COLUMN (focus_column));
13358
13359   if (!tree_view->priv->model)
13360     return;
13361
13362   if (focus_cell)
13363     {
13364       g_return_if_fail (focus_column);
13365       g_return_if_fail (GTK_IS_CELL_RENDERER (focus_cell));
13366     }
13367
13368   /* cancel the current editing, if it exists */
13369   if (tree_view->priv->edited_column &&
13370       gtk_cell_area_get_edit_widget
13371       (gtk_cell_layout_get_area (GTK_CELL_LAYOUT (tree_view->priv->edited_column))))
13372     gtk_tree_view_stop_editing (tree_view, TRUE);
13373
13374   gtk_tree_view_real_set_cursor (tree_view, path, TRUE, TRUE);
13375
13376   if (focus_column &&
13377       gtk_tree_view_column_get_visible (focus_column))
13378     {
13379       GList *list;
13380       gboolean column_in_tree = FALSE;
13381
13382       for (list = tree_view->priv->columns; list; list = list->next)
13383         if (list->data == focus_column)
13384           {
13385             column_in_tree = TRUE;
13386             break;
13387           }
13388       g_return_if_fail (column_in_tree);
13389       tree_view->priv->focus_column = focus_column;
13390       if (focus_cell)
13391         gtk_tree_view_column_focus_cell (focus_column, focus_cell);
13392       if (start_editing)
13393         gtk_tree_view_start_editing (tree_view, path, TRUE);
13394     }
13395 }
13396
13397 /**
13398  * gtk_tree_view_get_bin_window:
13399  * @tree_view: A #GtkTreeView
13400  *
13401  * Returns the window that @tree_view renders to.
13402  * This is used primarily to compare to <literal>event->window</literal>
13403  * to confirm that the event on @tree_view is on the right window.
13404  *
13405  * Return value: (transfer none): A #GdkWindow, or %NULL when @tree_view
13406  *     hasn't been realized yet
13407  **/
13408 GdkWindow *
13409 gtk_tree_view_get_bin_window (GtkTreeView *tree_view)
13410 {
13411   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), NULL);
13412
13413   return tree_view->priv->bin_window;
13414 }
13415
13416 /**
13417  * gtk_tree_view_get_path_at_pos:
13418  * @tree_view: A #GtkTreeView.
13419  * @x: The x position to be identified (relative to bin_window).
13420  * @y: The y position to be identified (relative to bin_window).
13421  * @path: (out) (allow-none): A pointer to a #GtkTreePath pointer to be filled in, or %NULL
13422  * @column: (out) (transfer none) (allow-none): A pointer to a #GtkTreeViewColumn pointer to be filled in, or %NULL
13423  * @cell_x: (out) (allow-none): A pointer where the X coordinate relative to the cell can be placed, or %NULL
13424  * @cell_y: (out) (allow-none): A pointer where the Y coordinate relative to the cell can be placed, or %NULL
13425  *
13426  * Finds the path at the point (@x, @y), relative to bin_window coordinates
13427  * (please see gtk_tree_view_get_bin_window()).
13428  * That is, @x and @y are relative to an events coordinates. @x and @y must
13429  * come from an event on the @tree_view only where <literal>event->window ==
13430  * gtk_tree_view_get_bin_window (<!-- -->)</literal>. It is primarily for
13431  * things like popup menus. If @path is non-%NULL, then it will be filled
13432  * with the #GtkTreePath at that point.  This path should be freed with
13433  * gtk_tree_path_free().  If @column is non-%NULL, then it will be filled
13434  * with the column at that point.  @cell_x and @cell_y return the coordinates
13435  * relative to the cell background (i.e. the @background_area passed to
13436  * gtk_cell_renderer_render()).  This function is only meaningful if
13437  * @tree_view is realized.  Therefore this function will always return %FALSE
13438  * if @tree_view is not realized or does not have a model.
13439  *
13440  * For converting widget coordinates (eg. the ones you get from
13441  * GtkWidget::query-tooltip), please see
13442  * gtk_tree_view_convert_widget_to_bin_window_coords().
13443  *
13444  * Return value: %TRUE if a row exists at that coordinate.
13445  **/
13446 gboolean
13447 gtk_tree_view_get_path_at_pos (GtkTreeView        *tree_view,
13448                                gint                x,
13449                                gint                y,
13450                                GtkTreePath       **path,
13451                                GtkTreeViewColumn **column,
13452                                gint               *cell_x,
13453                                gint               *cell_y)
13454 {
13455   GtkRBTree *tree;
13456   GtkRBNode *node;
13457   gint y_offset;
13458
13459   g_return_val_if_fail (tree_view != NULL, FALSE);
13460
13461   if (path)
13462     *path = NULL;
13463   if (column)
13464     *column = NULL;
13465
13466   if (tree_view->priv->bin_window == NULL)
13467     return FALSE;
13468
13469   if (tree_view->priv->tree == NULL)
13470     return FALSE;
13471
13472   if (x > gtk_adjustment_get_upper (tree_view->priv->hadjustment))
13473     return FALSE;
13474
13475   if (x < 0 || y < 0)
13476     return FALSE;
13477
13478   if (column || cell_x)
13479     {
13480       GtkTreeViewColumn *tmp_column;
13481       GtkTreeViewColumn *last_column = NULL;
13482       GList *list;
13483       gint remaining_x = x;
13484       gboolean found = FALSE;
13485       gboolean rtl;
13486       gint width;
13487
13488       rtl = (gtk_widget_get_direction (GTK_WIDGET (tree_view)) == GTK_TEXT_DIR_RTL);
13489       for (list = (rtl ? g_list_last (tree_view->priv->columns) : g_list_first (tree_view->priv->columns));
13490            list;
13491            list = (rtl ? list->prev : list->next))
13492         {
13493           tmp_column = list->data;
13494
13495           if (gtk_tree_view_column_get_visible (tmp_column) == FALSE)
13496             continue;
13497
13498           last_column = tmp_column;
13499           width = gtk_tree_view_column_get_width (tmp_column);
13500           if (remaining_x <= width)
13501             {
13502               found = TRUE;
13503
13504               if (column)
13505                 *column = tmp_column;
13506
13507               if (cell_x)
13508                 *cell_x = remaining_x;
13509
13510               break;
13511             }
13512           remaining_x -= width;
13513         }
13514
13515       /* If found is FALSE and there is a last_column, then it the remainder
13516        * space is in that area
13517        */
13518       if (!found)
13519         {
13520           if (last_column)
13521             {
13522               if (column)
13523                 *column = last_column;
13524
13525               if (cell_x)
13526                 *cell_x = gtk_tree_view_column_get_width (last_column) + remaining_x;
13527             }
13528           else
13529             {
13530               return FALSE;
13531             }
13532         }
13533     }
13534
13535   y_offset = _gtk_rbtree_find_offset (tree_view->priv->tree,
13536                                       TREE_WINDOW_Y_TO_RBTREE_Y (tree_view, y),
13537                                       &tree, &node);
13538
13539   if (tree == NULL)
13540     return FALSE;
13541
13542   if (cell_y)
13543     *cell_y = y_offset;
13544
13545   if (path)
13546     *path = _gtk_tree_view_find_path (tree_view, tree, node);
13547
13548   return TRUE;
13549 }
13550
13551
13552 static inline gint
13553 gtk_tree_view_get_cell_area_height (GtkTreeView *tree_view,
13554                                     GtkRBNode   *node,
13555                                     gint         vertical_separator)
13556 {
13557   int height;
13558
13559   /* The "cell" areas are the cell_area passed in to gtk_cell_renderer_render(),
13560    * i.e. just the cells, no spacing.
13561    *
13562    * The cell area height is at least expander_size - vertical_separator.
13563    * For regular nodes, the height is then at least expander_size. We should
13564    * be able to enforce the expander_size minimum here, because this
13565    * function will not be called for irregular (e.g. separator) rows.
13566    */
13567   height = gtk_tree_view_get_row_height (tree_view, node);
13568   if (height < tree_view->priv->expander_size)
13569     height = tree_view->priv->expander_size;
13570
13571   return height - vertical_separator;
13572 }
13573
13574 static inline gint
13575 gtk_tree_view_get_cell_area_y_offset (GtkTreeView *tree_view,
13576                                       GtkRBTree   *tree,
13577                                       GtkRBNode   *node,
13578                                       gint         vertical_separator)
13579 {
13580   int offset;
13581
13582   offset = gtk_tree_view_get_row_y_offset (tree_view, tree, node);
13583   offset += vertical_separator / 2;
13584
13585   return offset;
13586 }
13587
13588 /**
13589  * gtk_tree_view_get_cell_area:
13590  * @tree_view: a #GtkTreeView
13591  * @path: (allow-none): a #GtkTreePath for the row, or %NULL to get only horizontal coordinates
13592  * @column: (allow-none): a #GtkTreeViewColumn for the column, or %NULL to get only vertical coordinates
13593  * @rect: (out): rectangle to fill with cell rect
13594  *
13595  * Fills the bounding rectangle in bin_window coordinates for the cell at the
13596  * row specified by @path and the column specified by @column.  If @path is
13597  * %NULL, or points to a path not currently displayed, the @y and @height fields
13598  * of the rectangle will be filled with 0. If @column is %NULL, the @x and @width
13599  * fields will be filled with 0.  The sum of all cell rects does not cover the
13600  * entire tree; there are extra pixels in between rows, for example. The
13601  * returned rectangle is equivalent to the @cell_area passed to
13602  * gtk_cell_renderer_render().  This function is only valid if @tree_view is
13603  * realized.
13604  **/
13605 void
13606 gtk_tree_view_get_cell_area (GtkTreeView        *tree_view,
13607                              GtkTreePath        *path,
13608                              GtkTreeViewColumn  *column,
13609                              GdkRectangle       *rect)
13610 {
13611   GtkRBTree *tree = NULL;
13612   GtkRBNode *node = NULL;
13613   gint vertical_separator;
13614   gint horizontal_separator;
13615
13616   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
13617   g_return_if_fail (column == NULL || GTK_IS_TREE_VIEW_COLUMN (column));
13618   g_return_if_fail (rect != NULL);
13619   g_return_if_fail (!column || gtk_tree_view_column_get_tree_view (column) == (GtkWidget *) tree_view);
13620   g_return_if_fail (gtk_widget_get_realized (GTK_WIDGET (tree_view)));
13621
13622   gtk_widget_style_get (GTK_WIDGET (tree_view),
13623                         "vertical-separator", &vertical_separator,
13624                         "horizontal-separator", &horizontal_separator,
13625                         NULL);
13626
13627   rect->x = 0;
13628   rect->y = 0;
13629   rect->width = 0;
13630   rect->height = 0;
13631
13632   if (column)
13633     {
13634       rect->x = gtk_tree_view_column_get_x_offset (column) + horizontal_separator/2;
13635       rect->width = gtk_tree_view_column_get_width (column) - horizontal_separator;
13636     }
13637
13638   if (path)
13639     {
13640       gboolean ret = _gtk_tree_view_find_node (tree_view, path, &tree, &node);
13641
13642       /* Get vertical coords */
13643       if ((!ret && tree == NULL) || ret)
13644         return;
13645
13646       if (row_is_separator (tree_view, NULL, path))
13647         {
13648           /* There isn't really a "cell area" for separator, so we
13649            * return the y, height values for background area instead.
13650            */
13651           rect->y = gtk_tree_view_get_row_y_offset (tree_view, tree, node);
13652           rect->height = gtk_tree_view_get_row_height (tree_view, node);
13653         }
13654       else
13655         {
13656           rect->y = gtk_tree_view_get_cell_area_y_offset (tree_view, tree, node,
13657                                                           vertical_separator);
13658           rect->height = gtk_tree_view_get_cell_area_height (tree_view, node,
13659                                                              vertical_separator);
13660         }
13661
13662       if (column &&
13663           gtk_tree_view_is_expander_column (tree_view, column))
13664         {
13665           gint depth = gtk_tree_path_get_depth (path);
13666           gboolean rtl;
13667
13668           rtl = gtk_widget_get_direction (GTK_WIDGET (tree_view)) == GTK_TEXT_DIR_RTL;
13669
13670           if (!rtl)
13671             rect->x += (depth - 1) * tree_view->priv->level_indentation;
13672           rect->width -= (depth - 1) * tree_view->priv->level_indentation;
13673
13674           if (gtk_tree_view_draw_expanders (tree_view))
13675             {
13676               if (!rtl)
13677                 rect->x += depth * tree_view->priv->expander_size;
13678               rect->width -= depth * tree_view->priv->expander_size;
13679             }
13680
13681           rect->width = MAX (rect->width, 0);
13682         }
13683     }
13684 }
13685
13686 static inline gint
13687 gtk_tree_view_get_row_height (GtkTreeView *tree_view,
13688                               GtkRBNode   *node)
13689 {
13690   int height;
13691
13692   /* The "background" areas of all rows/cells add up to cover the entire tree.
13693    * The background includes all inter-row and inter-cell spacing.
13694    *
13695    * If the row pointed at by node does not have a height set, we default
13696    * to expander_size, which is the minimum height for regular nodes.
13697    * Non-regular nodes (e.g. separators) can have a height set smaller
13698    * than expander_size and should not be overruled here.
13699    */
13700   height = GTK_RBNODE_GET_HEIGHT (node);
13701   if (height <= 0)
13702     height = tree_view->priv->expander_size;
13703
13704   return height;
13705 }
13706
13707 static inline gint
13708 gtk_tree_view_get_row_y_offset (GtkTreeView *tree_view,
13709                                 GtkRBTree   *tree,
13710                                 GtkRBNode   *node)
13711 {
13712   int offset;
13713
13714   offset = _gtk_rbtree_node_find_offset (tree, node);
13715
13716   return RBTREE_Y_TO_TREE_WINDOW_Y (tree_view, offset);
13717 }
13718
13719 /**
13720  * gtk_tree_view_get_background_area:
13721  * @tree_view: a #GtkTreeView
13722  * @path: (allow-none): a #GtkTreePath for the row, or %NULL to get only horizontal coordinates
13723  * @column: (allow-none): a #GtkTreeViewColumn for the column, or %NULL to get only vertical coordiantes
13724  * @rect: (out): rectangle to fill with cell background rect
13725  *
13726  * Fills the bounding rectangle in bin_window coordinates for the cell at the
13727  * row specified by @path and the column specified by @column.  If @path is
13728  * %NULL, or points to a node not found in the tree, the @y and @height fields of
13729  * the rectangle will be filled with 0. If @column is %NULL, the @x and @width
13730  * fields will be filled with 0.  The returned rectangle is equivalent to the
13731  * @background_area passed to gtk_cell_renderer_render().  These background
13732  * areas tile to cover the entire bin window.  Contrast with the @cell_area,
13733  * returned by gtk_tree_view_get_cell_area(), which returns only the cell
13734  * itself, excluding surrounding borders and the tree expander area.
13735  *
13736  **/
13737 void
13738 gtk_tree_view_get_background_area (GtkTreeView        *tree_view,
13739                                    GtkTreePath        *path,
13740                                    GtkTreeViewColumn  *column,
13741                                    GdkRectangle       *rect)
13742 {
13743   GtkRBTree *tree = NULL;
13744   GtkRBNode *node = NULL;
13745
13746   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
13747   g_return_if_fail (column == NULL || GTK_IS_TREE_VIEW_COLUMN (column));
13748   g_return_if_fail (rect != NULL);
13749
13750   rect->x = 0;
13751   rect->y = 0;
13752   rect->width = 0;
13753   rect->height = 0;
13754
13755   if (path)
13756     {
13757       /* Get vertical coords */
13758
13759       if (!_gtk_tree_view_find_node (tree_view, path, &tree, &node) &&
13760           tree == NULL)
13761         return;
13762
13763       rect->y = gtk_tree_view_get_row_y_offset (tree_view, tree, node);
13764       rect->height = gtk_tree_view_get_row_height (tree_view, node);
13765     }
13766
13767   if (column)
13768     {
13769       gint x2 = 0;
13770
13771       gtk_tree_view_get_background_xrange (tree_view, tree, column, &rect->x, &x2);
13772       rect->width = x2 - rect->x;
13773     }
13774 }
13775
13776 /**
13777  * gtk_tree_view_get_visible_rect:
13778  * @tree_view: a #GtkTreeView
13779  * @visible_rect: (out): rectangle to fill
13780  *
13781  * Fills @visible_rect with the currently-visible region of the
13782  * buffer, in tree coordinates. Convert to bin_window coordinates with
13783  * gtk_tree_view_convert_tree_to_bin_window_coords().
13784  * Tree coordinates start at 0,0 for row 0 of the tree, and cover the entire
13785  * scrollable area of the tree.
13786  **/
13787 void
13788 gtk_tree_view_get_visible_rect (GtkTreeView  *tree_view,
13789                                 GdkRectangle *visible_rect)
13790 {
13791   GtkAllocation allocation;
13792   GtkWidget *widget;
13793
13794   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
13795
13796   widget = GTK_WIDGET (tree_view);
13797
13798   if (visible_rect)
13799     {
13800       gtk_widget_get_allocation (widget, &allocation);
13801       visible_rect->x = gtk_adjustment_get_value (tree_view->priv->hadjustment);
13802       visible_rect->y = gtk_adjustment_get_value (tree_view->priv->vadjustment);
13803       visible_rect->width = allocation.width;
13804       visible_rect->height = allocation.height - gtk_tree_view_get_effective_header_height (tree_view);
13805     }
13806 }
13807
13808 /**
13809  * gtk_tree_view_convert_widget_to_tree_coords:
13810  * @tree_view: a #GtkTreeView
13811  * @wx: X coordinate relative to the widget
13812  * @wy: Y coordinate relative to the widget
13813  * @tx: (out): return location for tree X coordinate
13814  * @ty: (out): return location for tree Y coordinate
13815  *
13816  * Converts widget coordinates to coordinates for the
13817  * tree (the full scrollable area of the tree).
13818  *
13819  * Since: 2.12
13820  **/
13821 void
13822 gtk_tree_view_convert_widget_to_tree_coords (GtkTreeView *tree_view,
13823                                              gint         wx,
13824                                              gint         wy,
13825                                              gint        *tx,
13826                                              gint        *ty)
13827 {
13828   gint x, y;
13829
13830   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
13831
13832   gtk_tree_view_convert_widget_to_bin_window_coords (tree_view,
13833                                                      wx, wy,
13834                                                      &x, &y);
13835   gtk_tree_view_convert_bin_window_to_tree_coords (tree_view,
13836                                                    x, y,
13837                                                    tx, ty);
13838 }
13839
13840 /**
13841  * gtk_tree_view_convert_tree_to_widget_coords:
13842  * @tree_view: a #GtkTreeView
13843  * @tx: X coordinate relative to the tree
13844  * @ty: Y coordinate relative to the tree
13845  * @wx: (out): return location for widget X coordinate
13846  * @wy: (out): return location for widget Y coordinate
13847  *
13848  * Converts tree coordinates (coordinates in full scrollable area of the tree)
13849  * to widget coordinates.
13850  *
13851  * Since: 2.12
13852  **/
13853 void
13854 gtk_tree_view_convert_tree_to_widget_coords (GtkTreeView *tree_view,
13855                                              gint         tx,
13856                                              gint         ty,
13857                                              gint        *wx,
13858                                              gint        *wy)
13859 {
13860   gint x, y;
13861
13862   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
13863
13864   gtk_tree_view_convert_tree_to_bin_window_coords (tree_view,
13865                                                    tx, ty,
13866                                                    &x, &y);
13867   gtk_tree_view_convert_bin_window_to_widget_coords (tree_view,
13868                                                      x, y,
13869                                                      wx, wy);
13870 }
13871
13872 /**
13873  * gtk_tree_view_convert_widget_to_bin_window_coords:
13874  * @tree_view: a #GtkTreeView
13875  * @wx: X coordinate relative to the widget
13876  * @wy: Y coordinate relative to the widget
13877  * @bx: (out): return location for bin_window X coordinate
13878  * @by: (out): return location for bin_window Y coordinate
13879  *
13880  * Converts widget coordinates to coordinates for the bin_window
13881  * (see gtk_tree_view_get_bin_window()).
13882  *
13883  * Since: 2.12
13884  **/
13885 void
13886 gtk_tree_view_convert_widget_to_bin_window_coords (GtkTreeView *tree_view,
13887                                                    gint         wx,
13888                                                    gint         wy,
13889                                                    gint        *bx,
13890                                                    gint        *by)
13891 {
13892   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
13893
13894   if (bx)
13895     *bx = wx + gtk_adjustment_get_value (tree_view->priv->hadjustment);
13896   if (by)
13897     *by = wy - gtk_tree_view_get_effective_header_height (tree_view);
13898 }
13899
13900 /**
13901  * gtk_tree_view_convert_bin_window_to_widget_coords:
13902  * @tree_view: a #GtkTreeView
13903  * @bx: bin_window X coordinate
13904  * @by: bin_window Y coordinate
13905  * @wx: (out): return location for widget X coordinate
13906  * @wy: (out): return location for widget Y coordinate
13907  *
13908  * Converts bin_window coordinates (see gtk_tree_view_get_bin_window())
13909  * to widget relative coordinates.
13910  *
13911  * Since: 2.12
13912  **/
13913 void
13914 gtk_tree_view_convert_bin_window_to_widget_coords (GtkTreeView *tree_view,
13915                                                    gint         bx,
13916                                                    gint         by,
13917                                                    gint        *wx,
13918                                                    gint        *wy)
13919 {
13920   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
13921
13922   if (wx)
13923     *wx = bx - gtk_adjustment_get_value (tree_view->priv->hadjustment);
13924   if (wy)
13925     *wy = by + gtk_tree_view_get_effective_header_height (tree_view);
13926 }
13927
13928 /**
13929  * gtk_tree_view_convert_tree_to_bin_window_coords:
13930  * @tree_view: a #GtkTreeView
13931  * @tx: tree X coordinate
13932  * @ty: tree Y coordinate
13933  * @bx: (out): return location for X coordinate relative to bin_window
13934  * @by: (out): return location for Y coordinate relative to bin_window
13935  *
13936  * Converts tree coordinates (coordinates in full scrollable area of the tree)
13937  * to bin_window coordinates.
13938  *
13939  * Since: 2.12
13940  **/
13941 void
13942 gtk_tree_view_convert_tree_to_bin_window_coords (GtkTreeView *tree_view,
13943                                                  gint         tx,
13944                                                  gint         ty,
13945                                                  gint        *bx,
13946                                                  gint        *by)
13947 {
13948   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
13949
13950   if (bx)
13951     *bx = tx;
13952   if (by)
13953     *by = ty - tree_view->priv->dy;
13954 }
13955
13956 /**
13957  * gtk_tree_view_convert_bin_window_to_tree_coords:
13958  * @tree_view: a #GtkTreeView
13959  * @bx: X coordinate relative to bin_window
13960  * @by: Y coordinate relative to bin_window
13961  * @tx: (out): return location for tree X coordinate
13962  * @ty: (out): return location for tree Y coordinate
13963  *
13964  * Converts bin_window coordinates to coordinates for the
13965  * tree (the full scrollable area of the tree).
13966  *
13967  * Since: 2.12
13968  **/
13969 void
13970 gtk_tree_view_convert_bin_window_to_tree_coords (GtkTreeView *tree_view,
13971                                                  gint         bx,
13972                                                  gint         by,
13973                                                  gint        *tx,
13974                                                  gint        *ty)
13975 {
13976   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
13977
13978   if (tx)
13979     *tx = bx;
13980   if (ty)
13981     *ty = by + tree_view->priv->dy;
13982 }
13983
13984
13985
13986 /**
13987  * gtk_tree_view_get_visible_range:
13988  * @tree_view: A #GtkTreeView
13989  * @start_path: (out) (allow-none): Return location for start of region,
13990  *              or %NULL.
13991  * @end_path: (out) (allow-none): Return location for end of region, or %NULL.
13992  *
13993  * Sets @start_path and @end_path to be the first and last visible path.
13994  * Note that there may be invisible paths in between.
13995  *
13996  * The paths should be freed with gtk_tree_path_free() after use.
13997  *
13998  * Returns: %TRUE, if valid paths were placed in @start_path and @end_path.
13999  *
14000  * Since: 2.8
14001  **/
14002 gboolean
14003 gtk_tree_view_get_visible_range (GtkTreeView  *tree_view,
14004                                  GtkTreePath **start_path,
14005                                  GtkTreePath **end_path)
14006 {
14007   GtkRBTree *tree;
14008   GtkRBNode *node;
14009   gboolean retval;
14010
14011   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), FALSE);
14012
14013   if (!tree_view->priv->tree)
14014     return FALSE;
14015
14016   retval = TRUE;
14017
14018   if (start_path)
14019     {
14020       _gtk_rbtree_find_offset (tree_view->priv->tree,
14021                                TREE_WINDOW_Y_TO_RBTREE_Y (tree_view, 0),
14022                                &tree, &node);
14023       if (node)
14024         *start_path = _gtk_tree_view_find_path (tree_view, tree, node);
14025       else
14026         retval = FALSE;
14027     }
14028
14029   if (end_path)
14030     {
14031       gint y;
14032
14033       if (tree_view->priv->height < gtk_adjustment_get_page_size (tree_view->priv->vadjustment))
14034         y = tree_view->priv->height - 1;
14035       else
14036         y = TREE_WINDOW_Y_TO_RBTREE_Y (tree_view, gtk_adjustment_get_page_size (tree_view->priv->vadjustment)) - 1;
14037
14038       _gtk_rbtree_find_offset (tree_view->priv->tree, y, &tree, &node);
14039       if (node)
14040         *end_path = _gtk_tree_view_find_path (tree_view, tree, node);
14041       else
14042         retval = FALSE;
14043     }
14044
14045   return retval;
14046 }
14047
14048 /**
14049  * gtk_tree_view_is_blank_at_pos:
14050  * @tree_view: A #GtkTreeView
14051  * @x: The x position to be identified (relative to bin_window)
14052  * @y: The y position to be identified (relative to bin_window)
14053  * @path: (out) (allow-none): A pointer to a #GtkTreePath pointer to be filled in, or %NULL
14054  * @column: (out) (allow-none): A pointer to a #GtkTreeViewColumn pointer to be filled in, or %NULL
14055  * @cell_x: (out) (allow-none): A pointer where the X coordinate relative to the cell can be placed, or %NULL
14056  * @cell_y: (out) (allow-none): A pointer where the Y coordinate relative to the cell can be placed, or %NULL
14057  *
14058  * Determine whether the point (@x, @y) in @tree_view is blank, that is no
14059  * cell content nor an expander arrow is drawn at the location. If so, the
14060  * location can be considered as the background. You might wish to take
14061  * special action on clicks on the background, such as clearing a current
14062  * selection, having a custom context menu or starting rubber banding.
14063  *
14064  * The @x and @y coordinate that are provided must be relative to bin_window
14065  * coordinates.  That is, @x and @y must come from an event on @tree_view
14066  * where <literal>event->window == gtk_tree_view_get_bin_window (<!-- -->)</literal>.
14067  *
14068  * For converting widget coordinates (eg. the ones you get from
14069  * GtkWidget::query-tooltip), please see
14070  * gtk_tree_view_convert_widget_to_bin_window_coords().
14071  *
14072  * The @path, @column, @cell_x and @cell_y arguments will be filled in
14073  * likewise as for gtk_tree_view_get_path_at_pos().  Please see
14074  * gtk_tree_view_get_path_at_pos() for more information.
14075  *
14076  * Return value: %TRUE if the area at the given coordinates is blank,
14077  * %FALSE otherwise.
14078  *
14079  * Since: 3.0
14080  */
14081 gboolean
14082 gtk_tree_view_is_blank_at_pos (GtkTreeView       *tree_view,
14083                                gint                x,
14084                                gint                y,
14085                                GtkTreePath       **path,
14086                                GtkTreeViewColumn **column,
14087                                gint               *cell_x,
14088                                gint               *cell_y)
14089 {
14090   GtkRBTree *tree;
14091   GtkRBNode *node;
14092   GtkTreeIter iter;
14093   GtkTreePath *real_path;
14094   GtkTreeViewColumn *real_column;
14095   GdkRectangle cell_area, background_area;
14096
14097   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), FALSE);
14098
14099   if (!gtk_tree_view_get_path_at_pos (tree_view, x, y,
14100                                       &real_path, &real_column,
14101                                       cell_x, cell_y))
14102     /* If there's no path here, it is blank */
14103     return TRUE;
14104
14105   if (path)
14106     *path = real_path;
14107
14108   if (column)
14109     *column = real_column;
14110
14111   gtk_tree_model_get_iter (tree_view->priv->model, &iter, real_path);
14112   _gtk_tree_view_find_node (tree_view, real_path, &tree, &node);
14113
14114   /* Check if there's an expander arrow at (x, y) */
14115   if (real_column == tree_view->priv->expander_column
14116       && gtk_tree_view_draw_expanders (tree_view))
14117     {
14118       gboolean over_arrow;
14119
14120       over_arrow = coords_are_over_arrow (tree_view, tree, node, x, y);
14121
14122       if (over_arrow)
14123         {
14124           if (!path)
14125             gtk_tree_path_free (real_path);
14126           return FALSE;
14127         }
14128     }
14129
14130   /* Otherwise, have the column see if there's a cell at (x, y) */
14131   gtk_tree_view_column_cell_set_cell_data (real_column,
14132                                            tree_view->priv->model,
14133                                            &iter,
14134                                            GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_PARENT),
14135                                            node->children ? TRUE : FALSE);
14136
14137   gtk_tree_view_get_background_area (tree_view, real_path, real_column,
14138                                      &background_area);
14139   gtk_tree_view_get_cell_area (tree_view, real_path, real_column,
14140                                &cell_area);
14141
14142   if (!path)
14143     gtk_tree_path_free (real_path);
14144
14145   return _gtk_tree_view_column_is_blank_at_pos (real_column,
14146                                                 &cell_area,
14147                                                 &background_area,
14148                                                 x, y);
14149 }
14150
14151 static void
14152 unset_reorderable (GtkTreeView *tree_view)
14153 {
14154   if (tree_view->priv->reorderable)
14155     {
14156       tree_view->priv->reorderable = FALSE;
14157       g_object_notify (G_OBJECT (tree_view), "reorderable");
14158     }
14159 }
14160
14161 /**
14162  * gtk_tree_view_enable_model_drag_source:
14163  * @tree_view: a #GtkTreeView
14164  * @start_button_mask: Mask of allowed buttons to start drag
14165  * @targets: (array length=n_targets): the table of targets that the drag will support
14166  * @n_targets: the number of items in @targets
14167  * @actions: the bitmask of possible actions for a drag from this
14168  *    widget
14169  *
14170  * Turns @tree_view into a drag source for automatic DND. Calling this
14171  * method sets #GtkTreeView:reorderable to %FALSE.
14172  **/
14173 void
14174 gtk_tree_view_enable_model_drag_source (GtkTreeView              *tree_view,
14175                                         GdkModifierType           start_button_mask,
14176                                         const GtkTargetEntry     *targets,
14177                                         gint                      n_targets,
14178                                         GdkDragAction             actions)
14179 {
14180   TreeViewDragInfo *di;
14181
14182   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
14183
14184   gtk_drag_source_set (GTK_WIDGET (tree_view),
14185                        0,
14186                        targets,
14187                        n_targets,
14188                        actions);
14189
14190   di = ensure_info (tree_view);
14191
14192   di->start_button_mask = start_button_mask;
14193   di->source_actions = actions;
14194   di->source_set = TRUE;
14195
14196   unset_reorderable (tree_view);
14197 }
14198
14199 /**
14200  * gtk_tree_view_enable_model_drag_dest:
14201  * @tree_view: a #GtkTreeView
14202  * @targets: (array length=n_targets): the table of targets that
14203  *           the drag will support
14204  * @n_targets: the number of items in @targets
14205  * @actions: the bitmask of possible actions for a drag from this
14206  *    widget
14207  *
14208  * Turns @tree_view into a drop destination for automatic DND. Calling
14209  * this method sets #GtkTreeView:reorderable to %FALSE.
14210  **/
14211 void
14212 gtk_tree_view_enable_model_drag_dest (GtkTreeView              *tree_view,
14213                                       const GtkTargetEntry     *targets,
14214                                       gint                      n_targets,
14215                                       GdkDragAction             actions)
14216 {
14217   TreeViewDragInfo *di;
14218
14219   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
14220
14221   gtk_drag_dest_set (GTK_WIDGET (tree_view),
14222                      0,
14223                      targets,
14224                      n_targets,
14225                      actions);
14226
14227   di = ensure_info (tree_view);
14228   di->dest_set = TRUE;
14229
14230   unset_reorderable (tree_view);
14231 }
14232
14233 /**
14234  * gtk_tree_view_unset_rows_drag_source:
14235  * @tree_view: a #GtkTreeView
14236  *
14237  * Undoes the effect of
14238  * gtk_tree_view_enable_model_drag_source(). Calling this method sets
14239  * #GtkTreeView:reorderable to %FALSE.
14240  **/
14241 void
14242 gtk_tree_view_unset_rows_drag_source (GtkTreeView *tree_view)
14243 {
14244   TreeViewDragInfo *di;
14245
14246   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
14247
14248   di = get_info (tree_view);
14249
14250   if (di)
14251     {
14252       if (di->source_set)
14253         {
14254           gtk_drag_source_unset (GTK_WIDGET (tree_view));
14255           di->source_set = FALSE;
14256         }
14257
14258       if (!di->dest_set && !di->source_set)
14259         remove_info (tree_view);
14260     }
14261
14262   unset_reorderable (tree_view);
14263 }
14264
14265 /**
14266  * gtk_tree_view_unset_rows_drag_dest:
14267  * @tree_view: a #GtkTreeView
14268  *
14269  * Undoes the effect of
14270  * gtk_tree_view_enable_model_drag_dest(). Calling this method sets
14271  * #GtkTreeView:reorderable to %FALSE.
14272  **/
14273 void
14274 gtk_tree_view_unset_rows_drag_dest (GtkTreeView *tree_view)
14275 {
14276   TreeViewDragInfo *di;
14277
14278   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
14279
14280   di = get_info (tree_view);
14281
14282   if (di)
14283     {
14284       if (di->dest_set)
14285         {
14286           gtk_drag_dest_unset (GTK_WIDGET (tree_view));
14287           di->dest_set = FALSE;
14288         }
14289
14290       if (!di->dest_set && !di->source_set)
14291         remove_info (tree_view);
14292     }
14293
14294   unset_reorderable (tree_view);
14295 }
14296
14297 /**
14298  * gtk_tree_view_set_drag_dest_row:
14299  * @tree_view: a #GtkTreeView
14300  * @path: (allow-none): The path of the row to highlight, or %NULL
14301  * @pos: Specifies whether to drop before, after or into the row
14302  *
14303  * Sets the row that is highlighted for feedback.
14304  * If @path is %NULL, an existing highlight is removed.
14305  */
14306 void
14307 gtk_tree_view_set_drag_dest_row (GtkTreeView            *tree_view,
14308                                  GtkTreePath            *path,
14309                                  GtkTreeViewDropPosition pos)
14310 {
14311   GtkTreePath *current_dest;
14312
14313   /* Note; this function is exported to allow a custom DND
14314    * implementation, so it can't touch TreeViewDragInfo
14315    */
14316
14317   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
14318
14319   current_dest = NULL;
14320
14321   if (tree_view->priv->drag_dest_row)
14322     {
14323       current_dest = gtk_tree_row_reference_get_path (tree_view->priv->drag_dest_row);
14324       gtk_tree_row_reference_free (tree_view->priv->drag_dest_row);
14325     }
14326
14327   /* special case a drop on an empty model */
14328   tree_view->priv->empty_view_drop = 0;
14329
14330   if (pos == GTK_TREE_VIEW_DROP_BEFORE && path
14331       && gtk_tree_path_get_depth (path) == 1
14332       && gtk_tree_path_get_indices (path)[0] == 0)
14333     {
14334       gint n_children;
14335
14336       n_children = gtk_tree_model_iter_n_children (tree_view->priv->model,
14337                                                    NULL);
14338
14339       if (!n_children)
14340         tree_view->priv->empty_view_drop = 1;
14341     }
14342
14343   tree_view->priv->drag_dest_pos = pos;
14344
14345   if (path)
14346     {
14347       tree_view->priv->drag_dest_row =
14348         gtk_tree_row_reference_new_proxy (G_OBJECT (tree_view), tree_view->priv->model, path);
14349       gtk_tree_view_queue_draw_path (tree_view, path, NULL);
14350     }
14351   else
14352     tree_view->priv->drag_dest_row = NULL;
14353
14354   if (current_dest)
14355     {
14356       GtkRBTree *tree, *new_tree;
14357       GtkRBNode *node, *new_node;
14358
14359       _gtk_tree_view_find_node (tree_view, current_dest, &tree, &node);
14360       _gtk_tree_view_queue_draw_node (tree_view, tree, node, NULL);
14361
14362       if (tree && node)
14363         {
14364           _gtk_rbtree_next_full (tree, node, &new_tree, &new_node);
14365           if (new_tree && new_node)
14366             _gtk_tree_view_queue_draw_node (tree_view, new_tree, new_node, NULL);
14367
14368           _gtk_rbtree_prev_full (tree, node, &new_tree, &new_node);
14369           if (new_tree && new_node)
14370             _gtk_tree_view_queue_draw_node (tree_view, new_tree, new_node, NULL);
14371         }
14372       gtk_tree_path_free (current_dest);
14373     }
14374 }
14375
14376 /**
14377  * gtk_tree_view_get_drag_dest_row:
14378  * @tree_view: a #GtkTreeView
14379  * @path: (out) (allow-none): Return location for the path of the highlighted row, or %NULL.
14380  * @pos: (out) (allow-none): Return location for the drop position, or %NULL
14381  *
14382  * Gets information about the row that is highlighted for feedback.
14383  **/
14384 void
14385 gtk_tree_view_get_drag_dest_row (GtkTreeView              *tree_view,
14386                                  GtkTreePath             **path,
14387                                  GtkTreeViewDropPosition  *pos)
14388 {
14389   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
14390
14391   if (path)
14392     {
14393       if (tree_view->priv->drag_dest_row)
14394         *path = gtk_tree_row_reference_get_path (tree_view->priv->drag_dest_row);
14395       else
14396         {
14397           if (tree_view->priv->empty_view_drop)
14398             *path = gtk_tree_path_new_from_indices (0, -1);
14399           else
14400             *path = NULL;
14401         }
14402     }
14403
14404   if (pos)
14405     *pos = tree_view->priv->drag_dest_pos;
14406 }
14407
14408 /**
14409  * gtk_tree_view_get_dest_row_at_pos:
14410  * @tree_view: a #GtkTreeView
14411  * @drag_x: the position to determine the destination row for
14412  * @drag_y: the position to determine the destination row for
14413  * @path: (out) (allow-none): Return location for the path of the highlighted row, or %NULL.
14414  * @pos: (out) (allow-none): Return location for the drop position, or %NULL
14415  *
14416  * Determines the destination row for a given position.  @drag_x and
14417  * @drag_y are expected to be in widget coordinates.  This function is only
14418  * meaningful if @tree_view is realized.  Therefore this function will always
14419  * return %FALSE if @tree_view is not realized or does not have a model.
14420  *
14421  * Return value: whether there is a row at the given position, %TRUE if this
14422  * is indeed the case.
14423  **/
14424 gboolean
14425 gtk_tree_view_get_dest_row_at_pos (GtkTreeView             *tree_view,
14426                                    gint                     drag_x,
14427                                    gint                     drag_y,
14428                                    GtkTreePath            **path,
14429                                    GtkTreeViewDropPosition *pos)
14430 {
14431   gint cell_y;
14432   gint bin_x, bin_y;
14433   gdouble offset_into_row;
14434   gdouble third;
14435   GdkRectangle cell;
14436   GtkTreeViewColumn *column = NULL;
14437   GtkTreePath *tmp_path = NULL;
14438
14439   /* Note; this function is exported to allow a custom DND
14440    * implementation, so it can't touch TreeViewDragInfo
14441    */
14442
14443   g_return_val_if_fail (tree_view != NULL, FALSE);
14444   g_return_val_if_fail (drag_x >= 0, FALSE);
14445   g_return_val_if_fail (drag_y >= 0, FALSE);
14446
14447   if (path)
14448     *path = NULL;
14449
14450   if (tree_view->priv->bin_window == NULL)
14451     return FALSE;
14452
14453   if (tree_view->priv->tree == NULL)
14454     return FALSE;
14455
14456   /* If in the top third of a row, we drop before that row; if
14457    * in the bottom third, drop after that row; if in the middle,
14458    * and the row has children, drop into the row.
14459    */
14460   gtk_tree_view_convert_widget_to_bin_window_coords (tree_view, drag_x, drag_y,
14461                                                      &bin_x, &bin_y);
14462
14463   if (!gtk_tree_view_get_path_at_pos (tree_view,
14464                                       bin_x,
14465                                       bin_y,
14466                                       &tmp_path,
14467                                       &column,
14468                                       NULL,
14469                                       &cell_y))
14470     return FALSE;
14471
14472   gtk_tree_view_get_background_area (tree_view, tmp_path, column,
14473                                      &cell);
14474
14475   offset_into_row = cell_y;
14476
14477   if (path)
14478     *path = tmp_path;
14479   else
14480     gtk_tree_path_free (tmp_path);
14481
14482   tmp_path = NULL;
14483
14484   third = cell.height / 3.0;
14485
14486   if (pos)
14487     {
14488       if (offset_into_row < third)
14489         {
14490           *pos = GTK_TREE_VIEW_DROP_BEFORE;
14491         }
14492       else if (offset_into_row < (cell.height / 2.0))
14493         {
14494           *pos = GTK_TREE_VIEW_DROP_INTO_OR_BEFORE;
14495         }
14496       else if (offset_into_row < third * 2.0)
14497         {
14498           *pos = GTK_TREE_VIEW_DROP_INTO_OR_AFTER;
14499         }
14500       else
14501         {
14502           *pos = GTK_TREE_VIEW_DROP_AFTER;
14503         }
14504     }
14505
14506   return TRUE;
14507 }
14508
14509
14510
14511 /* KEEP IN SYNC WITH GTK_TREE_VIEW_BIN_EXPOSE */
14512 /**
14513  * gtk_tree_view_create_row_drag_icon:
14514  * @tree_view: a #GtkTreeView
14515  * @path: a #GtkTreePath in @tree_view
14516  *
14517  * Creates a #cairo_surface_t representation of the row at @path.
14518  * This image is used for a drag icon.
14519  *
14520  * Return value: (transfer full): a newly-allocated surface of the drag icon.
14521  **/
14522 cairo_surface_t *
14523 gtk_tree_view_create_row_drag_icon (GtkTreeView  *tree_view,
14524                                     GtkTreePath  *path)
14525 {
14526   GtkTreeIter   iter;
14527   GtkRBTree    *tree;
14528   GtkRBNode    *node;
14529   GtkStyleContext *context;
14530   GtkStateFlags state;
14531   gint cell_offset;
14532   GList *list;
14533   GdkRectangle background_area;
14534   GtkWidget *widget;
14535   gint depth;
14536   /* start drawing inside the black outline */
14537   gint x = 1, y = 1;
14538   cairo_surface_t *surface;
14539   gint bin_window_width;
14540   gboolean is_separator = FALSE;
14541   gboolean rtl, allow_rules;
14542   cairo_t *cr;
14543
14544   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), NULL);
14545   g_return_val_if_fail (path != NULL, NULL);
14546
14547   widget = GTK_WIDGET (tree_view);
14548
14549   if (!gtk_widget_get_realized (widget))
14550     return NULL;
14551
14552   depth = gtk_tree_path_get_depth (path);
14553
14554   _gtk_tree_view_find_node (tree_view,
14555                             path,
14556                             &tree,
14557                             &node);
14558
14559   if (tree == NULL)
14560     return NULL;
14561
14562   if (!gtk_tree_model_get_iter (tree_view->priv->model,
14563                                 &iter,
14564                                 path))
14565     return NULL;
14566
14567   context = gtk_widget_get_style_context (widget);
14568
14569   gtk_style_context_save (context);
14570
14571   state = gtk_widget_get_state_flags (widget);
14572   gtk_style_context_set_state (context, state);
14573
14574   gtk_style_context_add_class (context, GTK_STYLE_CLASS_VIEW);
14575   gtk_style_context_add_region (context, GTK_STYLE_REGION_COLUMN, 0);
14576
14577   gtk_widget_style_get (widget,
14578                         "allow-rules", &allow_rules,
14579                         NULL);
14580
14581   if (allow_rules && tree_view->priv->has_rules)
14582     {
14583       GtkRegionFlags row_flags;
14584
14585       if ((_gtk_rbtree_node_get_index (tree, node) % 2))
14586         row_flags = GTK_REGION_ODD;
14587       else
14588         row_flags = GTK_REGION_EVEN;
14589
14590       gtk_style_context_add_region (context, GTK_STYLE_REGION_ROW, row_flags);
14591     }
14592
14593   is_separator = row_is_separator (tree_view, &iter, NULL);
14594
14595   cell_offset = x;
14596
14597   background_area.y = y;
14598   background_area.height = gtk_tree_view_get_row_height (tree_view, node);
14599
14600   bin_window_width = gdk_window_get_width (tree_view->priv->bin_window);
14601
14602   surface = gdk_window_create_similar_surface (tree_view->priv->bin_window,
14603                                                CAIRO_CONTENT_COLOR,
14604                                                bin_window_width + 2,
14605                                                background_area.height + 2);
14606
14607   cr = cairo_create (surface);
14608
14609   gtk_render_background (context, cr, 0, 0,
14610                          bin_window_width + 2,
14611                          background_area.height + 2);
14612
14613   rtl = gtk_widget_get_direction (GTK_WIDGET (tree_view)) == GTK_TEXT_DIR_RTL;
14614
14615   for (list = (rtl ? g_list_last (tree_view->priv->columns) : g_list_first (tree_view->priv->columns));
14616       list;
14617       list = (rtl ? list->prev : list->next))
14618     {
14619       GtkTreeViewColumn *column = list->data;
14620       GdkRectangle cell_area;
14621       gint vertical_separator;
14622
14623       if (!gtk_tree_view_column_get_visible (column))
14624         continue;
14625
14626       gtk_tree_view_column_cell_set_cell_data (column, tree_view->priv->model, &iter,
14627                                                GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_PARENT),
14628                                                node->children?TRUE:FALSE);
14629
14630       background_area.x = cell_offset;
14631       background_area.width = gtk_tree_view_column_get_width (column);
14632
14633       gtk_widget_style_get (widget,
14634                             "vertical-separator", &vertical_separator,
14635                             NULL);
14636
14637       cell_area = background_area;
14638
14639       cell_area.y += vertical_separator / 2;
14640       cell_area.height -= vertical_separator;
14641
14642       if (gtk_tree_view_is_expander_column (tree_view, column))
14643         {
14644           if (!rtl)
14645             cell_area.x += (depth - 1) * tree_view->priv->level_indentation;
14646           cell_area.width -= (depth - 1) * tree_view->priv->level_indentation;
14647
14648           if (gtk_tree_view_draw_expanders (tree_view))
14649             {
14650               if (!rtl)
14651                 cell_area.x += depth * tree_view->priv->expander_size;
14652               cell_area.width -= depth * tree_view->priv->expander_size;
14653             }
14654         }
14655
14656       if (gtk_tree_view_column_cell_is_visible (column))
14657         {
14658           if (is_separator)
14659             {
14660               gtk_style_context_save (context);
14661               gtk_style_context_add_class (context, GTK_STYLE_CLASS_SEPARATOR);
14662
14663               gtk_render_line (context, cr,
14664                                cell_area.x,
14665                                cell_area.y + cell_area.height / 2,
14666                                cell_area.x + cell_area.width,
14667                                cell_area.y + cell_area.height / 2);
14668
14669               gtk_style_context_restore (context);
14670             }
14671           else
14672             {
14673               _gtk_tree_view_column_cell_render (column,
14674                                                  cr,
14675                                                  &background_area,
14676                                                  &cell_area,
14677                                                  0, FALSE);
14678             }
14679         }
14680       cell_offset += gtk_tree_view_column_get_width (column);
14681     }
14682
14683   cairo_set_source_rgb (cr, 0, 0, 0);
14684   cairo_rectangle (cr,
14685                    0.5, 0.5,
14686                    bin_window_width + 1,
14687                    background_area.height + 1);
14688   cairo_set_line_width (cr, 1.0);
14689   cairo_stroke (cr);
14690
14691   cairo_destroy (cr);
14692
14693   cairo_surface_set_device_offset (surface, 2, 2);
14694
14695   gtk_style_context_restore (context);
14696
14697   return surface;
14698 }
14699
14700
14701 /**
14702  * gtk_tree_view_set_destroy_count_func:
14703  * @tree_view: A #GtkTreeView
14704  * @func: (allow-none): Function to be called when a view row is destroyed, or %NULL
14705  * @data: (allow-none): User data to be passed to @func, or %NULL
14706  * @destroy: (allow-none): Destroy notifier for @data, or %NULL
14707  *
14708  * This function should almost never be used.  It is meant for private use by
14709  * ATK for determining the number of visible children that are removed when the
14710  * user collapses a row, or a row is deleted.
14711  **/
14712 void
14713 gtk_tree_view_set_destroy_count_func (GtkTreeView             *tree_view,
14714                                       GtkTreeDestroyCountFunc  func,
14715                                       gpointer                 data,
14716                                       GDestroyNotify           destroy)
14717 {
14718   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
14719
14720   if (tree_view->priv->destroy_count_destroy)
14721     tree_view->priv->destroy_count_destroy (tree_view->priv->destroy_count_data);
14722
14723   tree_view->priv->destroy_count_func = func;
14724   tree_view->priv->destroy_count_data = data;
14725   tree_view->priv->destroy_count_destroy = destroy;
14726 }
14727
14728
14729 /*
14730  * Interactive search
14731  */
14732
14733 /**
14734  * gtk_tree_view_set_enable_search:
14735  * @tree_view: A #GtkTreeView
14736  * @enable_search: %TRUE, if the user can search interactively
14737  *
14738  * If @enable_search is set, then the user can type in text to search through
14739  * the tree interactively (this is sometimes called "typeahead find").
14740  *
14741  * Note that even if this is %FALSE, the user can still initiate a search
14742  * using the "start-interactive-search" key binding.
14743  */
14744 void
14745 gtk_tree_view_set_enable_search (GtkTreeView *tree_view,
14746                                  gboolean     enable_search)
14747 {
14748   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
14749
14750   enable_search = !!enable_search;
14751
14752   if (tree_view->priv->enable_search != enable_search)
14753     {
14754        tree_view->priv->enable_search = enable_search;
14755        g_object_notify (G_OBJECT (tree_view), "enable-search");
14756     }
14757 }
14758
14759 /**
14760  * gtk_tree_view_get_enable_search:
14761  * @tree_view: A #GtkTreeView
14762  *
14763  * Returns whether or not the tree allows to start interactive searching
14764  * by typing in text.
14765  *
14766  * Return value: whether or not to let the user search interactively
14767  */
14768 gboolean
14769 gtk_tree_view_get_enable_search (GtkTreeView *tree_view)
14770 {
14771   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), FALSE);
14772
14773   return tree_view->priv->enable_search;
14774 }
14775
14776
14777 /**
14778  * gtk_tree_view_get_search_column:
14779  * @tree_view: A #GtkTreeView
14780  *
14781  * Gets the column searched on by the interactive search code.
14782  *
14783  * Return value: the column the interactive search code searches in.
14784  */
14785 gint
14786 gtk_tree_view_get_search_column (GtkTreeView *tree_view)
14787 {
14788   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), -1);
14789
14790   return (tree_view->priv->search_column);
14791 }
14792
14793 /**
14794  * gtk_tree_view_set_search_column:
14795  * @tree_view: A #GtkTreeView
14796  * @column: the column of the model to search in, or -1 to disable searching
14797  *
14798  * Sets @column as the column where the interactive search code should
14799  * search in for the current model.
14800  *
14801  * If the search column is set, users can use the "start-interactive-search"
14802  * key binding to bring up search popup. The enable-search property controls
14803  * whether simply typing text will also start an interactive search.
14804  *
14805  * Note that @column refers to a column of the current model. The search
14806  * column is reset to -1 when the model is changed.
14807  */
14808 void
14809 gtk_tree_view_set_search_column (GtkTreeView *tree_view,
14810                                  gint         column)
14811 {
14812   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
14813   g_return_if_fail (column >= -1);
14814
14815   if (tree_view->priv->search_column == column)
14816     return;
14817
14818   tree_view->priv->search_column = column;
14819   g_object_notify (G_OBJECT (tree_view), "search-column");
14820 }
14821
14822 /**
14823  * gtk_tree_view_get_search_equal_func: (skip)
14824  * @tree_view: A #GtkTreeView
14825  *
14826  * Returns the compare function currently in use.
14827  *
14828  * Return value: the currently used compare function for the search code.
14829  */
14830
14831 GtkTreeViewSearchEqualFunc
14832 gtk_tree_view_get_search_equal_func (GtkTreeView *tree_view)
14833 {
14834   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), NULL);
14835
14836   return tree_view->priv->search_equal_func;
14837 }
14838
14839 /**
14840  * gtk_tree_view_set_search_equal_func:
14841  * @tree_view: A #GtkTreeView
14842  * @search_equal_func: the compare function to use during the search
14843  * @search_user_data: (allow-none): user data to pass to @search_equal_func, or %NULL
14844  * @search_destroy: (allow-none): Destroy notifier for @search_user_data, or %NULL
14845  *
14846  * Sets the compare function for the interactive search capabilities; note
14847  * that somewhat like strcmp() returning 0 for equality
14848  * #GtkTreeViewSearchEqualFunc returns %FALSE on matches.
14849  **/
14850 void
14851 gtk_tree_view_set_search_equal_func (GtkTreeView                *tree_view,
14852                                      GtkTreeViewSearchEqualFunc  search_equal_func,
14853                                      gpointer                    search_user_data,
14854                                      GDestroyNotify              search_destroy)
14855 {
14856   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
14857   g_return_if_fail (search_equal_func != NULL);
14858
14859   if (tree_view->priv->search_destroy)
14860     tree_view->priv->search_destroy (tree_view->priv->search_user_data);
14861
14862   tree_view->priv->search_equal_func = search_equal_func;
14863   tree_view->priv->search_user_data = search_user_data;
14864   tree_view->priv->search_destroy = search_destroy;
14865   if (tree_view->priv->search_equal_func == NULL)
14866     tree_view->priv->search_equal_func = gtk_tree_view_search_equal_func;
14867 }
14868
14869 /**
14870  * gtk_tree_view_get_search_entry:
14871  * @tree_view: A #GtkTreeView
14872  *
14873  * Returns the #GtkEntry which is currently in use as interactive search
14874  * entry for @tree_view.  In case the built-in entry is being used, %NULL
14875  * will be returned.
14876  *
14877  * Return value: (transfer none): the entry currently in use as search entry.
14878  *
14879  * Since: 2.10
14880  */
14881 GtkEntry *
14882 gtk_tree_view_get_search_entry (GtkTreeView *tree_view)
14883 {
14884   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), NULL);
14885
14886   if (tree_view->priv->search_custom_entry_set)
14887     return GTK_ENTRY (tree_view->priv->search_entry);
14888
14889   return NULL;
14890 }
14891
14892 /**
14893  * gtk_tree_view_set_search_entry:
14894  * @tree_view: A #GtkTreeView
14895  * @entry: (allow-none): the entry the interactive search code of @tree_view should use or %NULL
14896  *
14897  * Sets the entry which the interactive search code will use for this
14898  * @tree_view.  This is useful when you want to provide a search entry
14899  * in our interface at all time at a fixed position.  Passing %NULL for
14900  * @entry will make the interactive search code use the built-in popup
14901  * entry again.
14902  *
14903  * Since: 2.10
14904  */
14905 void
14906 gtk_tree_view_set_search_entry (GtkTreeView *tree_view,
14907                                 GtkEntry    *entry)
14908 {
14909   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
14910   g_return_if_fail (entry == NULL || GTK_IS_ENTRY (entry));
14911
14912   if (tree_view->priv->search_custom_entry_set)
14913     {
14914       if (tree_view->priv->search_entry_changed_id)
14915         {
14916           g_signal_handler_disconnect (tree_view->priv->search_entry,
14917                                        tree_view->priv->search_entry_changed_id);
14918           tree_view->priv->search_entry_changed_id = 0;
14919         }
14920       g_signal_handlers_disconnect_by_func (tree_view->priv->search_entry,
14921                                             G_CALLBACK (gtk_tree_view_search_key_press_event),
14922                                             tree_view);
14923
14924       g_object_unref (tree_view->priv->search_entry);
14925     }
14926   else if (tree_view->priv->search_window)
14927     {
14928       gtk_widget_destroy (tree_view->priv->search_window);
14929
14930       tree_view->priv->search_window = NULL;
14931     }
14932
14933   if (entry)
14934     {
14935       tree_view->priv->search_entry = g_object_ref (entry);
14936       tree_view->priv->search_custom_entry_set = TRUE;
14937
14938       if (tree_view->priv->search_entry_changed_id == 0)
14939         {
14940           tree_view->priv->search_entry_changed_id =
14941             g_signal_connect (tree_view->priv->search_entry, "changed",
14942                               G_CALLBACK (gtk_tree_view_search_init),
14943                               tree_view);
14944         }
14945
14946         g_signal_connect (tree_view->priv->search_entry, "key-press-event",
14947                           G_CALLBACK (gtk_tree_view_search_key_press_event),
14948                           tree_view);
14949
14950         gtk_tree_view_search_init (tree_view->priv->search_entry, tree_view);
14951     }
14952   else
14953     {
14954       tree_view->priv->search_entry = NULL;
14955       tree_view->priv->search_custom_entry_set = FALSE;
14956     }
14957 }
14958
14959 /**
14960  * gtk_tree_view_set_search_position_func:
14961  * @tree_view: A #GtkTreeView
14962  * @func: (allow-none): the function to use to position the search dialog, or %NULL
14963  *    to use the default search position function
14964  * @data: (allow-none): user data to pass to @func, or %NULL
14965  * @destroy: (allow-none): Destroy notifier for @data, or %NULL
14966  *
14967  * Sets the function to use when positioning the search dialog.
14968  *
14969  * Since: 2.10
14970  **/
14971 void
14972 gtk_tree_view_set_search_position_func (GtkTreeView                   *tree_view,
14973                                         GtkTreeViewSearchPositionFunc  func,
14974                                         gpointer                       user_data,
14975                                         GDestroyNotify                 destroy)
14976 {
14977   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
14978
14979   if (tree_view->priv->search_position_destroy)
14980     tree_view->priv->search_position_destroy (tree_view->priv->search_position_user_data);
14981
14982   tree_view->priv->search_position_func = func;
14983   tree_view->priv->search_position_user_data = user_data;
14984   tree_view->priv->search_position_destroy = destroy;
14985   if (tree_view->priv->search_position_func == NULL)
14986     tree_view->priv->search_position_func = gtk_tree_view_search_position_func;
14987 }
14988
14989 /**
14990  * gtk_tree_view_get_search_position_func: (skip)
14991  * @tree_view: A #GtkTreeView
14992  *
14993  * Returns the positioning function currently in use.
14994  *
14995  * Return value: the currently used function for positioning the search dialog.
14996  *
14997  * Since: 2.10
14998  */
14999 GtkTreeViewSearchPositionFunc
15000 gtk_tree_view_get_search_position_func (GtkTreeView *tree_view)
15001 {
15002   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), NULL);
15003
15004   return tree_view->priv->search_position_func;
15005 }
15006
15007
15008 static void
15009 gtk_tree_view_search_dialog_hide (GtkWidget   *search_dialog,
15010                                   GtkTreeView *tree_view,
15011                                   GdkDevice   *device)
15012 {
15013   if (tree_view->priv->disable_popdown)
15014     return;
15015
15016   if (tree_view->priv->search_entry_changed_id)
15017     {
15018       g_signal_handler_disconnect (tree_view->priv->search_entry,
15019                                    tree_view->priv->search_entry_changed_id);
15020       tree_view->priv->search_entry_changed_id = 0;
15021     }
15022   if (tree_view->priv->typeselect_flush_timeout)
15023     {
15024       g_source_remove (tree_view->priv->typeselect_flush_timeout);
15025       tree_view->priv->typeselect_flush_timeout = 0;
15026     }
15027
15028   if (gtk_widget_get_visible (search_dialog))
15029     {
15030       /* send focus-in event */
15031       send_focus_change (GTK_WIDGET (tree_view->priv->search_entry), device, FALSE);
15032       gtk_widget_hide (search_dialog);
15033       gtk_entry_set_text (GTK_ENTRY (tree_view->priv->search_entry), "");
15034       send_focus_change (GTK_WIDGET (tree_view), device, TRUE);
15035     }
15036 }
15037
15038 static void
15039 gtk_tree_view_search_position_func (GtkTreeView *tree_view,
15040                                     GtkWidget   *search_dialog,
15041                                     gpointer     user_data)
15042 {
15043   gint x, y;
15044   gint tree_x, tree_y;
15045   gint tree_width, tree_height;
15046   GdkWindow *tree_window = gtk_widget_get_window (GTK_WIDGET (tree_view));
15047   GdkScreen *screen = gdk_window_get_screen (tree_window);
15048   GtkRequisition requisition;
15049   gint monitor_num;
15050   GdkRectangle monitor;
15051
15052   monitor_num = gdk_screen_get_monitor_at_window (screen, tree_window);
15053   gdk_screen_get_monitor_geometry (screen, monitor_num, &monitor);
15054
15055   gtk_widget_realize (search_dialog);
15056
15057   gdk_window_get_origin (tree_window, &tree_x, &tree_y);
15058   tree_width = gdk_window_get_width (tree_window);
15059   tree_height = gdk_window_get_height (tree_window);
15060   gtk_widget_get_preferred_size (search_dialog, &requisition, NULL);
15061
15062   if (tree_x + tree_width > gdk_screen_get_width (screen))
15063     x = gdk_screen_get_width (screen) - requisition.width;
15064   else if (tree_x + tree_width - requisition.width < 0)
15065     x = 0;
15066   else
15067     x = tree_x + tree_width - requisition.width;
15068
15069   if (tree_y + tree_height + requisition.height > gdk_screen_get_height (screen))
15070     y = gdk_screen_get_height (screen) - requisition.height;
15071   else if (tree_y + tree_height < 0) /* isn't really possible ... */
15072     y = 0;
15073   else
15074     y = tree_y + tree_height;
15075
15076   gtk_window_move (GTK_WINDOW (search_dialog), x, y);
15077 }
15078
15079 static void
15080 gtk_tree_view_search_disable_popdown (GtkEntry *entry,
15081                                       GtkMenu  *menu,
15082                                       gpointer  data)
15083 {
15084   GtkTreeView *tree_view = (GtkTreeView *)data;
15085
15086   tree_view->priv->disable_popdown = 1;
15087   g_signal_connect (menu, "hide",
15088                     G_CALLBACK (gtk_tree_view_search_enable_popdown), data);
15089 }
15090
15091 /* Because we're visible but offscreen, we just set a flag in the preedit
15092  * callback.
15093  */
15094 static void
15095 gtk_tree_view_search_preedit_changed (GtkIMContext *im_context,
15096                                       GtkTreeView  *tree_view)
15097 {
15098   tree_view->priv->imcontext_changed = 1;
15099   if (tree_view->priv->typeselect_flush_timeout)
15100     {
15101       g_source_remove (tree_view->priv->typeselect_flush_timeout);
15102       tree_view->priv->typeselect_flush_timeout =
15103         gdk_threads_add_timeout (GTK_TREE_VIEW_SEARCH_DIALOG_TIMEOUT,
15104                        (GSourceFunc) gtk_tree_view_search_entry_flush_timeout,
15105                        tree_view);
15106     }
15107
15108 }
15109
15110 static void
15111 gtk_tree_view_search_activate (GtkEntry    *entry,
15112                                GtkTreeView *tree_view)
15113 {
15114   GtkTreePath *path;
15115   GtkRBNode *node;
15116   GtkRBTree *tree;
15117
15118   gtk_tree_view_search_dialog_hide (tree_view->priv->search_window,
15119                                     tree_view,
15120                                     gtk_get_current_event_device ());
15121
15122   /* If we have a row selected and it's the cursor row, we activate
15123    * the row XXX */
15124   if (gtk_tree_row_reference_valid (tree_view->priv->cursor))
15125     {
15126       path = gtk_tree_row_reference_get_path (tree_view->priv->cursor);
15127
15128       _gtk_tree_view_find_node (tree_view, path, &tree, &node);
15129
15130       if (node && GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_SELECTED))
15131         gtk_tree_view_row_activated (tree_view, path, tree_view->priv->focus_column);
15132
15133       gtk_tree_path_free (path);
15134     }
15135 }
15136
15137 static gboolean
15138 gtk_tree_view_real_search_enable_popdown (gpointer data)
15139 {
15140   GtkTreeView *tree_view = (GtkTreeView *)data;
15141
15142   tree_view->priv->disable_popdown = 0;
15143
15144   return FALSE;
15145 }
15146
15147 static void
15148 gtk_tree_view_search_enable_popdown (GtkWidget *widget,
15149                                      gpointer   data)
15150 {
15151   gdk_threads_add_timeout_full (G_PRIORITY_HIGH, 200, gtk_tree_view_real_search_enable_popdown, g_object_ref (data), g_object_unref);
15152 }
15153
15154 static gboolean
15155 gtk_tree_view_search_delete_event (GtkWidget *widget,
15156                                    GdkEventAny *event,
15157                                    GtkTreeView *tree_view)
15158 {
15159   g_return_val_if_fail (GTK_IS_WIDGET (widget), FALSE);
15160
15161   gtk_tree_view_search_dialog_hide (widget, tree_view, NULL);
15162
15163   return TRUE;
15164 }
15165
15166 static gboolean
15167 gtk_tree_view_search_button_press_event (GtkWidget *widget,
15168                                          GdkEventButton *event,
15169                                          GtkTreeView *tree_view)
15170 {
15171   GdkDevice *keyb_device;
15172
15173   g_return_val_if_fail (GTK_IS_WIDGET (widget), FALSE);
15174
15175   keyb_device = gdk_device_get_associated_device (event->device);
15176   gtk_tree_view_search_dialog_hide (widget, tree_view, keyb_device);
15177
15178   if (event->window == tree_view->priv->bin_window)
15179     gtk_tree_view_button_press (GTK_WIDGET (tree_view), event);
15180
15181   return TRUE;
15182 }
15183
15184 static gboolean
15185 gtk_tree_view_search_scroll_event (GtkWidget *widget,
15186                                    GdkEventScroll *event,
15187                                    GtkTreeView *tree_view)
15188 {
15189   gboolean retval = FALSE;
15190
15191   if (event->direction == GDK_SCROLL_UP)
15192     {
15193       gtk_tree_view_search_move (widget, tree_view, TRUE);
15194       retval = TRUE;
15195     }
15196   else if (event->direction == GDK_SCROLL_DOWN)
15197     {
15198       gtk_tree_view_search_move (widget, tree_view, FALSE);
15199       retval = TRUE;
15200     }
15201
15202   /* renew the flush timeout */
15203   if (retval && tree_view->priv->typeselect_flush_timeout
15204       && !tree_view->priv->search_custom_entry_set)
15205     {
15206       g_source_remove (tree_view->priv->typeselect_flush_timeout);
15207       tree_view->priv->typeselect_flush_timeout =
15208         gdk_threads_add_timeout (GTK_TREE_VIEW_SEARCH_DIALOG_TIMEOUT,
15209                        (GSourceFunc) gtk_tree_view_search_entry_flush_timeout,
15210                        tree_view);
15211     }
15212
15213   return retval;
15214 }
15215
15216 static gboolean
15217 gtk_tree_view_search_key_press_event (GtkWidget *widget,
15218                                       GdkEventKey *event,
15219                                       GtkTreeView *tree_view)
15220 {
15221   GdkModifierType default_accel;
15222   gboolean        retval = FALSE;
15223
15224   g_return_val_if_fail (GTK_IS_WIDGET (widget), FALSE);
15225   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), FALSE);
15226
15227   /* close window and cancel the search */
15228   if (!tree_view->priv->search_custom_entry_set
15229       && (event->keyval == GDK_KEY_Escape ||
15230           event->keyval == GDK_KEY_Tab ||
15231             event->keyval == GDK_KEY_KP_Tab ||
15232             event->keyval == GDK_KEY_ISO_Left_Tab))
15233     {
15234       gtk_tree_view_search_dialog_hide (widget, tree_view,
15235                                         gdk_event_get_device ((GdkEvent *) event));
15236       return TRUE;
15237     }
15238
15239   default_accel = gtk_widget_get_modifier_mask (widget,
15240                                                 GDK_MODIFIER_INTENT_PRIMARY_ACCELERATOR);
15241
15242   /* select previous matching iter */
15243   if (event->keyval == GDK_KEY_Up || event->keyval == GDK_KEY_KP_Up)
15244     {
15245       if (!gtk_tree_view_search_move (widget, tree_view, TRUE))
15246         gtk_widget_error_bell (widget);
15247
15248       retval = TRUE;
15249     }
15250
15251   if (((event->state & (default_accel | GDK_SHIFT_MASK)) == (default_accel | GDK_SHIFT_MASK))
15252       && (event->keyval == GDK_KEY_g || event->keyval == GDK_KEY_G))
15253     {
15254       if (!gtk_tree_view_search_move (widget, tree_view, TRUE))
15255         gtk_widget_error_bell (widget);
15256
15257       retval = TRUE;
15258     }
15259
15260   /* select next matching iter */
15261   if (event->keyval == GDK_KEY_Down || event->keyval == GDK_KEY_KP_Down)
15262     {
15263       if (!gtk_tree_view_search_move (widget, tree_view, FALSE))
15264         gtk_widget_error_bell (widget);
15265
15266       retval = TRUE;
15267     }
15268
15269   if (((event->state & (default_accel | GDK_SHIFT_MASK)) == default_accel)
15270       && (event->keyval == GDK_KEY_g || event->keyval == GDK_KEY_G))
15271     {
15272       if (!gtk_tree_view_search_move (widget, tree_view, FALSE))
15273         gtk_widget_error_bell (widget);
15274
15275       retval = TRUE;
15276     }
15277
15278   /* renew the flush timeout */
15279   if (retval && tree_view->priv->typeselect_flush_timeout
15280       && !tree_view->priv->search_custom_entry_set)
15281     {
15282       g_source_remove (tree_view->priv->typeselect_flush_timeout);
15283       tree_view->priv->typeselect_flush_timeout =
15284         gdk_threads_add_timeout (GTK_TREE_VIEW_SEARCH_DIALOG_TIMEOUT,
15285                        (GSourceFunc) gtk_tree_view_search_entry_flush_timeout,
15286                        tree_view);
15287     }
15288
15289   return retval;
15290 }
15291
15292 /*  this function returns FALSE if there is a search string but
15293  *  nothing was found, and TRUE otherwise.
15294  */
15295 static gboolean
15296 gtk_tree_view_search_move (GtkWidget   *window,
15297                            GtkTreeView *tree_view,
15298                            gboolean     up)
15299 {
15300   gboolean ret;
15301   gint len;
15302   gint count = 0;
15303   const gchar *text;
15304   GtkTreeIter iter;
15305   GtkTreeModel *model;
15306   GtkTreeSelection *selection;
15307
15308   text = gtk_entry_get_text (GTK_ENTRY (tree_view->priv->search_entry));
15309
15310   g_return_val_if_fail (text != NULL, FALSE);
15311
15312   len = strlen (text);
15313
15314   if (up && tree_view->priv->selected_iter == 1)
15315     return strlen (text) < 1;
15316
15317   len = strlen (text);
15318
15319   if (len < 1)
15320     return TRUE;
15321
15322   model = gtk_tree_view_get_model (tree_view);
15323   selection = gtk_tree_view_get_selection (tree_view);
15324
15325   /* search */
15326   gtk_tree_selection_unselect_all (selection);
15327   if (!gtk_tree_model_get_iter_first (model, &iter))
15328     return TRUE;
15329
15330   ret = gtk_tree_view_search_iter (model, selection, &iter, text,
15331                                    &count, up?((tree_view->priv->selected_iter) - 1):((tree_view->priv->selected_iter + 1)));
15332
15333   if (ret)
15334     {
15335       /* found */
15336       tree_view->priv->selected_iter += up?(-1):(1);
15337       return TRUE;
15338     }
15339   else
15340     {
15341       /* return to old iter */
15342       count = 0;
15343       gtk_tree_model_get_iter_first (model, &iter);
15344       gtk_tree_view_search_iter (model, selection,
15345                                  &iter, text,
15346                                  &count, tree_view->priv->selected_iter);
15347       return FALSE;
15348     }
15349 }
15350
15351 static gboolean
15352 gtk_tree_view_search_equal_func (GtkTreeModel *model,
15353                                  gint          column,
15354                                  const gchar  *key,
15355                                  GtkTreeIter  *iter,
15356                                  gpointer      search_data)
15357 {
15358   gboolean retval = TRUE;
15359   const gchar *str;
15360   gchar *normalized_string;
15361   gchar *normalized_key;
15362   gchar *case_normalized_string = NULL;
15363   gchar *case_normalized_key = NULL;
15364   GValue value = G_VALUE_INIT;
15365   GValue transformed = G_VALUE_INIT;
15366
15367   gtk_tree_model_get_value (model, iter, column, &value);
15368
15369   g_value_init (&transformed, G_TYPE_STRING);
15370
15371   if (!g_value_transform (&value, &transformed))
15372     {
15373       g_value_unset (&value);
15374       return TRUE;
15375     }
15376
15377   g_value_unset (&value);
15378
15379   str = g_value_get_string (&transformed);
15380   if (!str)
15381     {
15382       g_value_unset (&transformed);
15383       return TRUE;
15384     }
15385
15386   normalized_string = g_utf8_normalize (str, -1, G_NORMALIZE_ALL);
15387   normalized_key = g_utf8_normalize (key, -1, G_NORMALIZE_ALL);
15388
15389   if (normalized_string && normalized_key)
15390     {
15391       case_normalized_string = g_utf8_casefold (normalized_string, -1);
15392       case_normalized_key = g_utf8_casefold (normalized_key, -1);
15393
15394       if (strncmp (case_normalized_key, case_normalized_string, strlen (case_normalized_key)) == 0)
15395         retval = FALSE;
15396     }
15397
15398   g_value_unset (&transformed);
15399   g_free (normalized_key);
15400   g_free (normalized_string);
15401   g_free (case_normalized_key);
15402   g_free (case_normalized_string);
15403
15404   return retval;
15405 }
15406
15407 static gboolean
15408 gtk_tree_view_search_iter (GtkTreeModel     *model,
15409                            GtkTreeSelection *selection,
15410                            GtkTreeIter      *iter,
15411                            const gchar      *text,
15412                            gint             *count,
15413                            gint              n)
15414 {
15415   GtkRBTree *tree = NULL;
15416   GtkRBNode *node = NULL;
15417   GtkTreePath *path;
15418
15419   GtkTreeView *tree_view = gtk_tree_selection_get_tree_view (selection);
15420
15421   path = gtk_tree_model_get_path (model, iter);
15422   _gtk_tree_view_find_node (tree_view, path, &tree, &node);
15423
15424   do
15425     {
15426       if (! tree_view->priv->search_equal_func (model, tree_view->priv->search_column, text, iter, tree_view->priv->search_user_data))
15427         {
15428           (*count)++;
15429           if (*count == n)
15430             {
15431               gtk_tree_view_scroll_to_cell (tree_view, path, NULL,
15432                                             TRUE, 0.5, 0.0);
15433               gtk_tree_selection_select_iter (selection, iter);
15434               gtk_tree_view_real_set_cursor (tree_view, path, FALSE, TRUE);
15435
15436               if (path)
15437                 gtk_tree_path_free (path);
15438
15439               return TRUE;
15440             }
15441         }
15442
15443       if (node->children)
15444         {
15445           gboolean has_child;
15446           GtkTreeIter tmp;
15447
15448           tree = node->children;
15449           node = tree->root;
15450
15451           while (node->left != tree->nil)
15452             node = node->left;
15453
15454           tmp = *iter;
15455           has_child = gtk_tree_model_iter_children (model, iter, &tmp);
15456           gtk_tree_path_down (path);
15457
15458           /* sanity check */
15459           TREE_VIEW_INTERNAL_ASSERT (has_child, FALSE);
15460         }
15461       else
15462         {
15463           gboolean done = FALSE;
15464
15465           do
15466             {
15467               node = _gtk_rbtree_next (tree, node);
15468
15469               if (node)
15470                 {
15471                   gboolean has_next;
15472
15473                   has_next = gtk_tree_model_iter_next (model, iter);
15474
15475                   done = TRUE;
15476                   gtk_tree_path_next (path);
15477
15478                   /* sanity check */
15479                   TREE_VIEW_INTERNAL_ASSERT (has_next, FALSE);
15480                 }
15481               else
15482                 {
15483                   gboolean has_parent;
15484                   GtkTreeIter tmp_iter = *iter;
15485
15486                   node = tree->parent_node;
15487                   tree = tree->parent_tree;
15488
15489                   if (!tree)
15490                     {
15491                       if (path)
15492                         gtk_tree_path_free (path);
15493
15494                       /* we've run out of tree, done with this func */
15495                       return FALSE;
15496                     }
15497
15498                   has_parent = gtk_tree_model_iter_parent (model,
15499                                                            iter,
15500                                                            &tmp_iter);
15501                   gtk_tree_path_up (path);
15502
15503                   /* sanity check */
15504                   TREE_VIEW_INTERNAL_ASSERT (has_parent, FALSE);
15505                 }
15506             }
15507           while (!done);
15508         }
15509     }
15510   while (1);
15511
15512   return FALSE;
15513 }
15514
15515 static void
15516 gtk_tree_view_search_init (GtkWidget   *entry,
15517                            GtkTreeView *tree_view)
15518 {
15519   gint ret;
15520   gint count = 0;
15521   const gchar *text;
15522   GtkTreeIter iter;
15523   GtkTreeModel *model;
15524   GtkTreeSelection *selection;
15525
15526   g_return_if_fail (GTK_IS_ENTRY (entry));
15527   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
15528
15529   text = gtk_entry_get_text (GTK_ENTRY (entry));
15530
15531   model = gtk_tree_view_get_model (tree_view);
15532   selection = gtk_tree_view_get_selection (tree_view);
15533
15534   /* search */
15535   gtk_tree_selection_unselect_all (selection);
15536   if (tree_view->priv->typeselect_flush_timeout
15537       && !tree_view->priv->search_custom_entry_set)
15538     {
15539       g_source_remove (tree_view->priv->typeselect_flush_timeout);
15540       tree_view->priv->typeselect_flush_timeout =
15541         gdk_threads_add_timeout (GTK_TREE_VIEW_SEARCH_DIALOG_TIMEOUT,
15542                        (GSourceFunc) gtk_tree_view_search_entry_flush_timeout,
15543                        tree_view);
15544     }
15545
15546   if (*text == '\0')
15547     return;
15548
15549   if (!gtk_tree_model_get_iter_first (model, &iter))
15550     return;
15551
15552   ret = gtk_tree_view_search_iter (model, selection,
15553                                    &iter, text,
15554                                    &count, 1);
15555
15556   if (ret)
15557     tree_view->priv->selected_iter = 1;
15558 }
15559
15560 void
15561 _gtk_tree_view_remove_editable (GtkTreeView       *tree_view,
15562                                 GtkTreeViewColumn *column,
15563                                 GtkCellEditable   *cell_editable)
15564 {
15565   if (tree_view->priv->edited_column == NULL)
15566     return;
15567
15568   g_return_if_fail (column == tree_view->priv->edited_column);
15569
15570   tree_view->priv->edited_column = NULL;
15571
15572   if (gtk_widget_has_focus (GTK_WIDGET (cell_editable)))
15573     gtk_widget_grab_focus (GTK_WIDGET (tree_view));
15574
15575   gtk_container_remove (GTK_CONTAINER (tree_view),
15576                         GTK_WIDGET (cell_editable));
15577
15578   /* FIXME should only redraw a single node */
15579   gtk_widget_queue_draw (GTK_WIDGET (tree_view));
15580 }
15581
15582 static gboolean
15583 gtk_tree_view_start_editing (GtkTreeView *tree_view,
15584                              GtkTreePath *cursor_path,
15585                              gboolean     edit_only)
15586 {
15587   GtkTreeIter iter;
15588   GdkRectangle cell_area;
15589   GtkTreeViewColumn *focus_column;
15590   guint flags = 0; /* can be 0, as the flags are primarily for rendering */
15591   gint retval = FALSE;
15592   GtkRBTree *cursor_tree;
15593   GtkRBNode *cursor_node;
15594
15595   g_assert (tree_view->priv->focus_column);
15596   focus_column = tree_view->priv->focus_column;
15597
15598   if (!gtk_widget_get_realized (GTK_WIDGET (tree_view)))
15599     return FALSE;
15600
15601   if (_gtk_tree_view_find_node (tree_view, cursor_path, &cursor_tree, &cursor_node) ||
15602       cursor_node == NULL)
15603     return FALSE;
15604
15605   gtk_tree_model_get_iter (tree_view->priv->model, &iter, cursor_path);
15606
15607   validate_row (tree_view, cursor_tree, cursor_node, &iter, cursor_path);
15608
15609   gtk_tree_view_column_cell_set_cell_data (focus_column,
15610                                            tree_view->priv->model,
15611                                            &iter,
15612                                            GTK_RBNODE_FLAG_SET (cursor_node, GTK_RBNODE_IS_PARENT),
15613                                            cursor_node->children ? TRUE : FALSE);
15614   gtk_tree_view_get_cell_area (tree_view,
15615                                cursor_path,
15616                                focus_column,
15617                                &cell_area);
15618
15619   if (gtk_cell_area_activate (gtk_cell_layout_get_area (GTK_CELL_LAYOUT (focus_column)),
15620                               _gtk_tree_view_column_get_context (focus_column),
15621                               GTK_WIDGET (tree_view),
15622                               &cell_area,
15623                               flags, edit_only))
15624     retval = TRUE;
15625
15626   return retval;
15627 }
15628
15629 void
15630 _gtk_tree_view_add_editable (GtkTreeView       *tree_view,
15631                              GtkTreeViewColumn *column,
15632                              GtkTreePath       *path,
15633                              GtkCellEditable   *cell_editable,
15634                              GdkRectangle      *cell_area)
15635 {
15636   gint pre_val = gtk_adjustment_get_value (tree_view->priv->vadjustment);
15637   GtkRequisition requisition;
15638
15639   tree_view->priv->edited_column = column;
15640
15641   gtk_tree_view_real_set_cursor (tree_view, path, FALSE, TRUE);
15642   cell_area->y += pre_val - (int)gtk_adjustment_get_value (tree_view->priv->vadjustment);
15643
15644   gtk_widget_get_preferred_size (GTK_WIDGET (cell_editable),
15645                                  &requisition, NULL);
15646
15647   tree_view->priv->draw_keyfocus = TRUE;
15648
15649   if (requisition.height < cell_area->height)
15650     {
15651       gint diff = cell_area->height - requisition.height;
15652       gtk_tree_view_put (tree_view,
15653                          GTK_WIDGET (cell_editable),
15654                          cell_area->x, cell_area->y + diff/2,
15655                          cell_area->width, requisition.height);
15656     }
15657   else
15658     {
15659       gtk_tree_view_put (tree_view,
15660                          GTK_WIDGET (cell_editable),
15661                          cell_area->x, cell_area->y,
15662                          cell_area->width, cell_area->height);
15663     }
15664 }
15665
15666 static void
15667 gtk_tree_view_stop_editing (GtkTreeView *tree_view,
15668                             gboolean     cancel_editing)
15669 {
15670   GtkTreeViewColumn *column;
15671
15672   if (tree_view->priv->edited_column == NULL)
15673     return;
15674
15675   /*
15676    * This is very evil. We need to do this, because
15677    * gtk_cell_editable_editing_done may trigger gtk_tree_view_row_changed
15678    * later on. If gtk_tree_view_row_changed notices
15679    * tree_view->priv->edited_column != NULL, it'll call
15680    * gtk_tree_view_stop_editing again. Bad things will happen then.
15681    *
15682    * Please read that again if you intend to modify anything here.
15683    */
15684
15685   column = tree_view->priv->edited_column;
15686   gtk_cell_area_stop_editing (gtk_cell_layout_get_area (GTK_CELL_LAYOUT (column)), cancel_editing);
15687   tree_view->priv->edited_column = NULL;
15688 }
15689
15690
15691 /**
15692  * gtk_tree_view_set_hover_selection:
15693  * @tree_view: a #GtkTreeView
15694  * @hover: %TRUE to enable hover selection mode
15695  *
15696  * Enables or disables the hover selection mode of @tree_view.
15697  * Hover selection makes the selected row follow the pointer.
15698  * Currently, this works only for the selection modes
15699  * %GTK_SELECTION_SINGLE and %GTK_SELECTION_BROWSE.
15700  *
15701  * Since: 2.6
15702  **/
15703 void
15704 gtk_tree_view_set_hover_selection (GtkTreeView *tree_view,
15705                                    gboolean     hover)
15706 {
15707   hover = hover != FALSE;
15708
15709   if (hover != tree_view->priv->hover_selection)
15710     {
15711       tree_view->priv->hover_selection = hover;
15712
15713       g_object_notify (G_OBJECT (tree_view), "hover-selection");
15714     }
15715 }
15716
15717 /**
15718  * gtk_tree_view_get_hover_selection:
15719  * @tree_view: a #GtkTreeView
15720  *
15721  * Returns whether hover selection mode is turned on for @tree_view.
15722  *
15723  * Return value: %TRUE if @tree_view is in hover selection mode
15724  *
15725  * Since: 2.6
15726  **/
15727 gboolean
15728 gtk_tree_view_get_hover_selection (GtkTreeView *tree_view)
15729 {
15730   return tree_view->priv->hover_selection;
15731 }
15732
15733 /**
15734  * gtk_tree_view_set_hover_expand:
15735  * @tree_view: a #GtkTreeView
15736  * @expand: %TRUE to enable hover selection mode
15737  *
15738  * Enables of disables the hover expansion mode of @tree_view.
15739  * Hover expansion makes rows expand or collapse if the pointer
15740  * moves over them.
15741  *
15742  * Since: 2.6
15743  **/
15744 void
15745 gtk_tree_view_set_hover_expand (GtkTreeView *tree_view,
15746                                 gboolean     expand)
15747 {
15748   expand = expand != FALSE;
15749
15750   if (expand != tree_view->priv->hover_expand)
15751     {
15752       tree_view->priv->hover_expand = expand;
15753
15754       g_object_notify (G_OBJECT (tree_view), "hover-expand");
15755     }
15756 }
15757
15758 /**
15759  * gtk_tree_view_get_hover_expand:
15760  * @tree_view: a #GtkTreeView
15761  *
15762  * Returns whether hover expansion mode is turned on for @tree_view.
15763  *
15764  * Return value: %TRUE if @tree_view is in hover expansion mode
15765  *
15766  * Since: 2.6
15767  **/
15768 gboolean
15769 gtk_tree_view_get_hover_expand (GtkTreeView *tree_view)
15770 {
15771   return tree_view->priv->hover_expand;
15772 }
15773
15774 /**
15775  * gtk_tree_view_set_rubber_banding:
15776  * @tree_view: a #GtkTreeView
15777  * @enable: %TRUE to enable rubber banding
15778  *
15779  * Enables or disables rubber banding in @tree_view.  If the selection mode
15780  * is #GTK_SELECTION_MULTIPLE, rubber banding will allow the user to select
15781  * multiple rows by dragging the mouse.
15782  *
15783  * Since: 2.10
15784  **/
15785 void
15786 gtk_tree_view_set_rubber_banding (GtkTreeView *tree_view,
15787                                   gboolean     enable)
15788 {
15789   enable = enable != FALSE;
15790
15791   if (enable != tree_view->priv->rubber_banding_enable)
15792     {
15793       tree_view->priv->rubber_banding_enable = enable;
15794
15795       g_object_notify (G_OBJECT (tree_view), "rubber-banding");
15796     }
15797 }
15798
15799 /**
15800  * gtk_tree_view_get_rubber_banding:
15801  * @tree_view: a #GtkTreeView
15802  *
15803  * Returns whether rubber banding is turned on for @tree_view.  If the
15804  * selection mode is #GTK_SELECTION_MULTIPLE, rubber banding will allow the
15805  * user to select multiple rows by dragging the mouse.
15806  *
15807  * Return value: %TRUE if rubber banding in @tree_view is enabled.
15808  *
15809  * Since: 2.10
15810  **/
15811 gboolean
15812 gtk_tree_view_get_rubber_banding (GtkTreeView *tree_view)
15813 {
15814   return tree_view->priv->rubber_banding_enable;
15815 }
15816
15817 /**
15818  * gtk_tree_view_is_rubber_banding_active:
15819  * @tree_view: a #GtkTreeView
15820  *
15821  * Returns whether a rubber banding operation is currently being done
15822  * in @tree_view.
15823  *
15824  * Return value: %TRUE if a rubber banding operation is currently being
15825  * done in @tree_view.
15826  *
15827  * Since: 2.12
15828  **/
15829 gboolean
15830 gtk_tree_view_is_rubber_banding_active (GtkTreeView *tree_view)
15831 {
15832   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), FALSE);
15833
15834   if (tree_view->priv->rubber_banding_enable
15835       && tree_view->priv->rubber_band_status == RUBBER_BAND_ACTIVE)
15836     return TRUE;
15837
15838   return FALSE;
15839 }
15840
15841 /**
15842  * gtk_tree_view_get_row_separator_func: (skip)
15843  * @tree_view: a #GtkTreeView
15844  *
15845  * Returns the current row separator function.
15846  *
15847  * Return value: the current row separator function.
15848  *
15849  * Since: 2.6
15850  **/
15851 GtkTreeViewRowSeparatorFunc
15852 gtk_tree_view_get_row_separator_func (GtkTreeView *tree_view)
15853 {
15854   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), NULL);
15855
15856   return tree_view->priv->row_separator_func;
15857 }
15858
15859 /**
15860  * gtk_tree_view_set_row_separator_func:
15861  * @tree_view: a #GtkTreeView
15862  * @func: (allow-none): a #GtkTreeViewRowSeparatorFunc
15863  * @data: (allow-none): user data to pass to @func, or %NULL
15864  * @destroy: (allow-none): destroy notifier for @data, or %NULL
15865  *
15866  * Sets the row separator function, which is used to determine
15867  * whether a row should be drawn as a separator. If the row separator
15868  * function is %NULL, no separators are drawn. This is the default value.
15869  *
15870  * Since: 2.6
15871  **/
15872 void
15873 gtk_tree_view_set_row_separator_func (GtkTreeView                 *tree_view,
15874                                       GtkTreeViewRowSeparatorFunc  func,
15875                                       gpointer                     data,
15876                                       GDestroyNotify               destroy)
15877 {
15878   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
15879
15880   if (tree_view->priv->row_separator_destroy)
15881     tree_view->priv->row_separator_destroy (tree_view->priv->row_separator_data);
15882
15883   tree_view->priv->row_separator_func = func;
15884   tree_view->priv->row_separator_data = data;
15885   tree_view->priv->row_separator_destroy = destroy;
15886
15887   /* Have the tree recalculate heights */
15888   _gtk_rbtree_mark_invalid (tree_view->priv->tree);
15889   gtk_widget_queue_resize (GTK_WIDGET (tree_view));
15890 }
15891
15892
15893 static void
15894 gtk_tree_view_grab_notify (GtkWidget *widget,
15895                            gboolean   was_grabbed)
15896 {
15897   GtkTreeView *tree_view = GTK_TREE_VIEW (widget);
15898
15899   tree_view->priv->in_grab = !was_grabbed;
15900
15901   if (!was_grabbed)
15902     {
15903       tree_view->priv->pressed_button = -1;
15904
15905       if (tree_view->priv->rubber_band_status)
15906         gtk_tree_view_stop_rubber_band (tree_view);
15907     }
15908 }
15909
15910 static void
15911 gtk_tree_view_state_flags_changed (GtkWidget     *widget,
15912                                    GtkStateFlags  previous_state)
15913 {
15914   if (gtk_widget_get_realized (widget))
15915     gtk_tree_view_ensure_background (GTK_TREE_VIEW (widget));
15916
15917   gtk_widget_queue_draw (widget);
15918 }
15919
15920 /**
15921  * gtk_tree_view_get_grid_lines:
15922  * @tree_view: a #GtkTreeView
15923  *
15924  * Returns which grid lines are enabled in @tree_view.
15925  *
15926  * Return value: a #GtkTreeViewGridLines value indicating which grid lines
15927  * are enabled.
15928  *
15929  * Since: 2.10
15930  */
15931 GtkTreeViewGridLines
15932 gtk_tree_view_get_grid_lines (GtkTreeView *tree_view)
15933 {
15934   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), 0);
15935
15936   return tree_view->priv->grid_lines;
15937 }
15938
15939 /**
15940  * gtk_tree_view_set_grid_lines:
15941  * @tree_view: a #GtkTreeView
15942  * @grid_lines: a #GtkTreeViewGridLines value indicating which grid lines to
15943  * enable.
15944  *
15945  * Sets which grid lines to draw in @tree_view.
15946  *
15947  * Since: 2.10
15948  */
15949 void
15950 gtk_tree_view_set_grid_lines (GtkTreeView           *tree_view,
15951                               GtkTreeViewGridLines   grid_lines)
15952 {
15953   GtkTreeViewPrivate *priv;
15954   GtkWidget *widget;
15955   GtkTreeViewGridLines old_grid_lines;
15956
15957   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
15958
15959   priv = tree_view->priv;
15960   widget = GTK_WIDGET (tree_view);
15961
15962   old_grid_lines = priv->grid_lines;
15963   priv->grid_lines = grid_lines;
15964
15965   if (gtk_widget_get_realized (widget))
15966     {
15967       if (grid_lines == GTK_TREE_VIEW_GRID_LINES_NONE &&
15968           priv->grid_line_width)
15969         {
15970           priv->grid_line_width = 0;
15971         }
15972
15973       if (grid_lines != GTK_TREE_VIEW_GRID_LINES_NONE &&
15974           !priv->grid_line_width)
15975         {
15976           gint8 *dash_list;
15977
15978           gtk_widget_style_get (widget,
15979                                 "grid-line-width", &priv->grid_line_width,
15980                                 "grid-line-pattern", (gchar *)&dash_list,
15981                                 NULL);
15982
15983           if (dash_list)
15984             {
15985               priv->grid_line_dashes[0] = dash_list[0];
15986               if (dash_list[0])
15987                 priv->grid_line_dashes[1] = dash_list[1];
15988
15989               g_free (dash_list);
15990             }
15991           else
15992             {
15993               priv->grid_line_dashes[0] = 1;
15994               priv->grid_line_dashes[1] = 1;
15995             }
15996         }
15997     }
15998
15999   if (old_grid_lines != grid_lines)
16000     {
16001       gtk_widget_queue_draw (GTK_WIDGET (tree_view));
16002
16003       g_object_notify (G_OBJECT (tree_view), "enable-grid-lines");
16004     }
16005 }
16006
16007 /**
16008  * gtk_tree_view_get_enable_tree_lines:
16009  * @tree_view: a #GtkTreeView.
16010  *
16011  * Returns whether or not tree lines are drawn in @tree_view.
16012  *
16013  * Return value: %TRUE if tree lines are drawn in @tree_view, %FALSE
16014  * otherwise.
16015  *
16016  * Since: 2.10
16017  */
16018 gboolean
16019 gtk_tree_view_get_enable_tree_lines (GtkTreeView *tree_view)
16020 {
16021   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), FALSE);
16022
16023   return tree_view->priv->tree_lines_enabled;
16024 }
16025
16026 /**
16027  * gtk_tree_view_set_enable_tree_lines:
16028  * @tree_view: a #GtkTreeView
16029  * @enabled: %TRUE to enable tree line drawing, %FALSE otherwise.
16030  *
16031  * Sets whether to draw lines interconnecting the expanders in @tree_view.
16032  * This does not have any visible effects for lists.
16033  *
16034  * Since: 2.10
16035  */
16036 void
16037 gtk_tree_view_set_enable_tree_lines (GtkTreeView *tree_view,
16038                                      gboolean     enabled)
16039 {
16040   GtkTreeViewPrivate *priv;
16041   GtkWidget *widget;
16042   gboolean was_enabled;
16043
16044   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
16045
16046   enabled = enabled != FALSE;
16047
16048   priv = tree_view->priv;
16049   widget = GTK_WIDGET (tree_view);
16050
16051   was_enabled = priv->tree_lines_enabled;
16052
16053   priv->tree_lines_enabled = enabled;
16054
16055   if (gtk_widget_get_realized (widget))
16056     {
16057       if (!enabled && priv->tree_line_width)
16058         {
16059           priv->tree_line_width = 0;
16060         }
16061
16062       if (enabled && !priv->tree_line_width)
16063         {
16064           gint8 *dash_list;
16065           gtk_widget_style_get (widget,
16066                                 "tree-line-width", &priv->tree_line_width,
16067                                 "tree-line-pattern", (gchar *)&dash_list,
16068                                 NULL);
16069
16070           if (dash_list)
16071             {
16072               priv->tree_line_dashes[0] = dash_list[0];
16073               if (dash_list[0])
16074                 priv->tree_line_dashes[1] = dash_list[1];
16075
16076               g_free (dash_list);
16077             }
16078           else
16079             {
16080               priv->tree_line_dashes[0] = 1;
16081               priv->tree_line_dashes[1] = 1;
16082             }
16083         }
16084     }
16085
16086   if (was_enabled != enabled)
16087     {
16088       gtk_widget_queue_draw (GTK_WIDGET (tree_view));
16089
16090       g_object_notify (G_OBJECT (tree_view), "enable-tree-lines");
16091     }
16092 }
16093
16094
16095 /**
16096  * gtk_tree_view_set_show_expanders:
16097  * @tree_view: a #GtkTreeView
16098  * @enabled: %TRUE to enable expander drawing, %FALSE otherwise.
16099  *
16100  * Sets whether to draw and enable expanders and indent child rows in
16101  * @tree_view.  When disabled there will be no expanders visible in trees
16102  * and there will be no way to expand and collapse rows by default.  Also
16103  * note that hiding the expanders will disable the default indentation.  You
16104  * can set a custom indentation in this case using
16105  * gtk_tree_view_set_level_indentation().
16106  * This does not have any visible effects for lists.
16107  *
16108  * Since: 2.12
16109  */
16110 void
16111 gtk_tree_view_set_show_expanders (GtkTreeView *tree_view,
16112                                   gboolean     enabled)
16113 {
16114   gboolean was_enabled;
16115
16116   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
16117
16118   enabled = enabled != FALSE;
16119   was_enabled = tree_view->priv->show_expanders;
16120
16121   tree_view->priv->show_expanders = enabled == TRUE;
16122
16123   if (enabled != was_enabled)
16124     gtk_widget_queue_draw (GTK_WIDGET (tree_view));
16125 }
16126
16127 /**
16128  * gtk_tree_view_get_show_expanders:
16129  * @tree_view: a #GtkTreeView.
16130  *
16131  * Returns whether or not expanders are drawn in @tree_view.
16132  *
16133  * Return value: %TRUE if expanders are drawn in @tree_view, %FALSE
16134  * otherwise.
16135  *
16136  * Since: 2.12
16137  */
16138 gboolean
16139 gtk_tree_view_get_show_expanders (GtkTreeView *tree_view)
16140 {
16141   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), FALSE);
16142
16143   return tree_view->priv->show_expanders;
16144 }
16145
16146 /**
16147  * gtk_tree_view_set_level_indentation:
16148  * @tree_view: a #GtkTreeView
16149  * @indentation: the amount, in pixels, of extra indentation in @tree_view.
16150  *
16151  * Sets the amount of extra indentation for child levels to use in @tree_view
16152  * in addition to the default indentation.  The value should be specified in
16153  * pixels, a value of 0 disables this feature and in this case only the default
16154  * indentation will be used.
16155  * This does not have any visible effects for lists.
16156  *
16157  * Since: 2.12
16158  */
16159 void
16160 gtk_tree_view_set_level_indentation (GtkTreeView *tree_view,
16161                                      gint         indentation)
16162 {
16163   tree_view->priv->level_indentation = indentation;
16164
16165   gtk_widget_queue_draw (GTK_WIDGET (tree_view));
16166 }
16167
16168 /**
16169  * gtk_tree_view_get_level_indentation:
16170  * @tree_view: a #GtkTreeView.
16171  *
16172  * Returns the amount, in pixels, of extra indentation for child levels
16173  * in @tree_view.
16174  *
16175  * Return value: the amount of extra indentation for child levels in
16176  * @tree_view.  A return value of 0 means that this feature is disabled.
16177  *
16178  * Since: 2.12
16179  */
16180 gint
16181 gtk_tree_view_get_level_indentation (GtkTreeView *tree_view)
16182 {
16183   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), 0);
16184
16185   return tree_view->priv->level_indentation;
16186 }
16187
16188 /**
16189  * gtk_tree_view_set_tooltip_row:
16190  * @tree_view: a #GtkTreeView
16191  * @tooltip: a #GtkTooltip
16192  * @path: a #GtkTreePath
16193  *
16194  * Sets the tip area of @tooltip to be the area covered by the row at @path.
16195  * See also gtk_tree_view_set_tooltip_column() for a simpler alternative.
16196  * See also gtk_tooltip_set_tip_area().
16197  *
16198  * Since: 2.12
16199  */
16200 void
16201 gtk_tree_view_set_tooltip_row (GtkTreeView *tree_view,
16202                                GtkTooltip  *tooltip,
16203                                GtkTreePath *path)
16204 {
16205   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
16206   g_return_if_fail (GTK_IS_TOOLTIP (tooltip));
16207
16208   gtk_tree_view_set_tooltip_cell (tree_view, tooltip, path, NULL, NULL);
16209 }
16210
16211 /**
16212  * gtk_tree_view_set_tooltip_cell:
16213  * @tree_view: a #GtkTreeView
16214  * @tooltip: a #GtkTooltip
16215  * @path: (allow-none): a #GtkTreePath or %NULL
16216  * @column: (allow-none): a #GtkTreeViewColumn or %NULL
16217  * @cell: (allow-none): a #GtkCellRenderer or %NULL
16218  *
16219  * Sets the tip area of @tooltip to the area @path, @column and @cell have
16220  * in common.  For example if @path is %NULL and @column is set, the tip
16221  * area will be set to the full area covered by @column.  See also
16222  * gtk_tooltip_set_tip_area().
16223  *
16224  * Note that if @path is not specified and @cell is set and part of a column
16225  * containing the expander, the tooltip might not show and hide at the correct
16226  * position.  In such cases @path must be set to the current node under the
16227  * mouse cursor for this function to operate correctly.
16228  *
16229  * See also gtk_tree_view_set_tooltip_column() for a simpler alternative.
16230  *
16231  * Since: 2.12
16232  */
16233 void
16234 gtk_tree_view_set_tooltip_cell (GtkTreeView       *tree_view,
16235                                 GtkTooltip        *tooltip,
16236                                 GtkTreePath       *path,
16237                                 GtkTreeViewColumn *column,
16238                                 GtkCellRenderer   *cell)
16239 {
16240   GtkAllocation allocation;
16241   GdkRectangle rect;
16242
16243   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
16244   g_return_if_fail (GTK_IS_TOOLTIP (tooltip));
16245   g_return_if_fail (column == NULL || GTK_IS_TREE_VIEW_COLUMN (column));
16246   g_return_if_fail (cell == NULL || GTK_IS_CELL_RENDERER (cell));
16247
16248   /* Determine x values. */
16249   if (column && cell)
16250     {
16251       GdkRectangle tmp;
16252       gint start, width;
16253
16254       /* We always pass in path here, whether it is NULL or not.
16255        * For cells in expander columns path must be specified so that
16256        * we can correctly account for the indentation.  This also means
16257        * that the tooltip is constrained vertically by the "Determine y
16258        * values" code below; this is not a real problem since cells actually
16259        * don't stretch vertically in constrast to columns.
16260        */
16261       gtk_tree_view_get_cell_area (tree_view, path, column, &tmp);
16262       gtk_tree_view_column_cell_get_position (column, cell, &start, &width);
16263
16264       gtk_tree_view_convert_bin_window_to_widget_coords (tree_view,
16265                                                          tmp.x + start, 0,
16266                                                          &rect.x, NULL);
16267       rect.width = width;
16268     }
16269   else if (column)
16270     {
16271       GdkRectangle tmp;
16272
16273       gtk_tree_view_get_background_area (tree_view, NULL, column, &tmp);
16274       gtk_tree_view_convert_bin_window_to_widget_coords (tree_view,
16275                                                          tmp.x, 0,
16276                                                          &rect.x, NULL);
16277       rect.width = tmp.width;
16278     }
16279   else
16280     {
16281       gtk_widget_get_allocation (GTK_WIDGET (tree_view), &allocation);
16282       rect.x = 0;
16283       rect.width = allocation.width;
16284     }
16285
16286   /* Determine y values. */
16287   if (path)
16288     {
16289       GdkRectangle tmp;
16290
16291       gtk_tree_view_get_background_area (tree_view, path, NULL, &tmp);
16292       gtk_tree_view_convert_bin_window_to_widget_coords (tree_view,
16293                                                          0, tmp.y,
16294                                                          NULL, &rect.y);
16295       rect.height = tmp.height;
16296     }
16297   else
16298     {
16299       rect.y = 0;
16300       rect.height = gtk_adjustment_get_page_size (tree_view->priv->vadjustment);
16301     }
16302
16303   gtk_tooltip_set_tip_area (tooltip, &rect);
16304 }
16305
16306 /**
16307  * gtk_tree_view_get_tooltip_context:
16308  * @tree_view: a #GtkTreeView
16309  * @x: (inout): the x coordinate (relative to widget coordinates)
16310  * @y: (inout): the y coordinate (relative to widget coordinates)
16311  * @keyboard_tip: whether this is a keyboard tooltip or not
16312  * @model: (out) (allow-none) (transfer none): a pointer to receive a
16313  *         #GtkTreeModel or %NULL
16314  * @path: (out) (allow-none): a pointer to receive a #GtkTreePath or %NULL
16315  * @iter: (out) (allow-none): a pointer to receive a #GtkTreeIter or %NULL
16316  *
16317  * This function is supposed to be used in a #GtkWidget::query-tooltip
16318  * signal handler for #GtkTreeView.  The @x, @y and @keyboard_tip values
16319  * which are received in the signal handler, should be passed to this
16320  * function without modification.
16321  *
16322  * The return value indicates whether there is a tree view row at the given
16323  * coordinates (%TRUE) or not (%FALSE) for mouse tooltips.  For keyboard
16324  * tooltips the row returned will be the cursor row.  When %TRUE, then any of
16325  * @model, @path and @iter which have been provided will be set to point to
16326  * that row and the corresponding model.  @x and @y will always be converted
16327  * to be relative to @tree_view's bin_window if @keyboard_tooltip is %FALSE.
16328  *
16329  * Return value: whether or not the given tooltip context points to a row.
16330  *
16331  * Since: 2.12
16332  */
16333 gboolean
16334 gtk_tree_view_get_tooltip_context (GtkTreeView   *tree_view,
16335                                    gint          *x,
16336                                    gint          *y,
16337                                    gboolean       keyboard_tip,
16338                                    GtkTreeModel **model,
16339                                    GtkTreePath  **path,
16340                                    GtkTreeIter   *iter)
16341 {
16342   GtkTreePath *tmppath = NULL;
16343
16344   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), FALSE);
16345   g_return_val_if_fail (x != NULL, FALSE);
16346   g_return_val_if_fail (y != NULL, FALSE);
16347
16348   if (keyboard_tip)
16349     {
16350       gtk_tree_view_get_cursor (tree_view, &tmppath, NULL);
16351
16352       if (!tmppath)
16353         return FALSE;
16354     }
16355   else
16356     {
16357       gtk_tree_view_convert_widget_to_bin_window_coords (tree_view, *x, *y,
16358                                                          x, y);
16359
16360       if (!gtk_tree_view_get_path_at_pos (tree_view, *x, *y,
16361                                           &tmppath, NULL, NULL, NULL))
16362         return FALSE;
16363     }
16364
16365   if (model)
16366     *model = gtk_tree_view_get_model (tree_view);
16367
16368   if (iter)
16369     gtk_tree_model_get_iter (gtk_tree_view_get_model (tree_view),
16370                              iter, tmppath);
16371
16372   if (path)
16373     *path = tmppath;
16374   else
16375     gtk_tree_path_free (tmppath);
16376
16377   return TRUE;
16378 }
16379
16380 static gboolean
16381 gtk_tree_view_set_tooltip_query_cb (GtkWidget  *widget,
16382                                     gint        x,
16383                                     gint        y,
16384                                     gboolean    keyboard_tip,
16385                                     GtkTooltip *tooltip,
16386                                     gpointer    data)
16387 {
16388   GValue value = G_VALUE_INIT;
16389   GValue transformed = G_VALUE_INIT;
16390   GtkTreeIter iter;
16391   GtkTreePath *path;
16392   GtkTreeModel *model;
16393   GtkTreeView *tree_view = GTK_TREE_VIEW (widget);
16394
16395   if (!gtk_tree_view_get_tooltip_context (GTK_TREE_VIEW (widget),
16396                                           &x, &y,
16397                                           keyboard_tip,
16398                                           &model, &path, &iter))
16399     return FALSE;
16400
16401   gtk_tree_model_get_value (model, &iter,
16402                             tree_view->priv->tooltip_column, &value);
16403
16404   g_value_init (&transformed, G_TYPE_STRING);
16405
16406   if (!g_value_transform (&value, &transformed))
16407     {
16408       g_value_unset (&value);
16409       gtk_tree_path_free (path);
16410
16411       return FALSE;
16412     }
16413
16414   g_value_unset (&value);
16415
16416   if (!g_value_get_string (&transformed))
16417     {
16418       g_value_unset (&transformed);
16419       gtk_tree_path_free (path);
16420
16421       return FALSE;
16422     }
16423
16424   gtk_tooltip_set_markup (tooltip, g_value_get_string (&transformed));
16425   gtk_tree_view_set_tooltip_row (tree_view, tooltip, path);
16426
16427   gtk_tree_path_free (path);
16428   g_value_unset (&transformed);
16429
16430   return TRUE;
16431 }
16432
16433 /**
16434  * gtk_tree_view_set_tooltip_column:
16435  * @tree_view: a #GtkTreeView
16436  * @column: an integer, which is a valid column number for @tree_view's model
16437  *
16438  * If you only plan to have simple (text-only) tooltips on full rows, you
16439  * can use this function to have #GtkTreeView handle these automatically
16440  * for you. @column should be set to the column in @tree_view's model
16441  * containing the tooltip texts, or -1 to disable this feature.
16442  *
16443  * When enabled, #GtkWidget::has-tooltip will be set to %TRUE and
16444  * @tree_view will connect a #GtkWidget::query-tooltip signal handler.
16445  *
16446  * Note that the signal handler sets the text with gtk_tooltip_set_markup(),
16447  * so &amp;, &lt;, etc have to be escaped in the text.
16448  *
16449  * Since: 2.12
16450  */
16451 void
16452 gtk_tree_view_set_tooltip_column (GtkTreeView *tree_view,
16453                                   gint         column)
16454 {
16455   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
16456
16457   if (column == tree_view->priv->tooltip_column)
16458     return;
16459
16460   if (column == -1)
16461     {
16462       g_signal_handlers_disconnect_by_func (tree_view,
16463                                             gtk_tree_view_set_tooltip_query_cb,
16464                                             NULL);
16465       gtk_widget_set_has_tooltip (GTK_WIDGET (tree_view), FALSE);
16466     }
16467   else
16468     {
16469       if (tree_view->priv->tooltip_column == -1)
16470         {
16471           g_signal_connect (tree_view, "query-tooltip",
16472                             G_CALLBACK (gtk_tree_view_set_tooltip_query_cb), NULL);
16473           gtk_widget_set_has_tooltip (GTK_WIDGET (tree_view), TRUE);
16474         }
16475     }
16476
16477   tree_view->priv->tooltip_column = column;
16478   g_object_notify (G_OBJECT (tree_view), "tooltip-column");
16479 }
16480
16481 /**
16482  * gtk_tree_view_get_tooltip_column:
16483  * @tree_view: a #GtkTreeView
16484  *
16485  * Returns the column of @tree_view's model which is being used for
16486  * displaying tooltips on @tree_view's rows.
16487  *
16488  * Return value: the index of the tooltip column that is currently being
16489  * used, or -1 if this is disabled.
16490  *
16491  * Since: 2.12
16492  */
16493 gint
16494 gtk_tree_view_get_tooltip_column (GtkTreeView *tree_view)
16495 {
16496   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), 0);
16497
16498   return tree_view->priv->tooltip_column;
16499 }