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

   1 /* gtktreeview.c
   2  * Copyright (C) 2000  Red Hat, Inc.,  Jonathan Blandford <jrb@redhat.com>
   3  *
   4  * This library is free software; you can redistribute it and/or
   5  * modify it under the terms of the GNU Library General Public
   6  * License as published by the Free Software Foundation; either
   7  * version 2 of the License, or (at your option) any later version.
   8  *
   9  * This library is distributed in the hope that it will be useful,
  10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  12  * Library General Public License for more details.
  13  *
  14  * You should have received a copy of the GNU Library General Public
  15  * License along with this library; if not, write to the
  16  * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
  17  * Boston, MA 02111-1307, USA.
  18  */
  19
  20
  21 #include "config.h"
  22
  23 #include <math.h>
  24 #include <string.h>
  25
  26 #include "gtktreeview.h"
  27 #include "gtkrbtree.h"
  28 #include "gtktreednd.h"
  29 #include "gtktreeprivate.h"
  30 #include "gtkcellrenderer.h"
  31 #include "gtkmarshalers.h"
  32 #include "gtkbuildable.h"
  33 #include "gtkbutton.h"
  34 #include "gtklabel.h"
  35 #include "gtkbox.h"
  36 #include "gtkarrow.h"
  37 #include "gtkintl.h"
  38 #include "gtkbindings.h"
  39 #include "gtkcontainer.h"
  40 #include "gtkentry.h"
  41 #include "gtkframe.h"
  42 #include "gtkmain.h"
  43 #include "gtktreemodelsort.h"
  44 #include "gtktooltip.h"
  45 #include "gtkscrollable.h"
  46 #include "gtkcelllayout.h"
  47 #include "gtkprivate.h"
  48 #include "gtkwidgetprivate.h"
  49 #include "gtkentryprivate.h"
  50 #include "gtkstylecontextprivate.h"
  51 #include "gtktypebuiltins.h"
  52 #include "gtkmain.h"
  53 #include "a11y/gtktreeviewaccessible.h"
  54
  55
  56 /**
  57  * SECTION:gtktreeview
  58  * @Short_description: A widget for displaying both trees and lists
  59  * @Title: GtkTreeView
  60  * @See_also: #GtkTreeViewColumn, #GtkTreeSelection, #GtkTreeDnd, #GtkTreeMode,
  61  *   #GtkTreeSortable, #GtkTreeModelSort, #GtkListStore, #GtkTreeStore,
  62  *   #GtkCellRenderer, #GtkCellEditable, #GtkCellRendererPixbuf,
  63  *   #GtkCellRendererText, #GtkCellRendererToggle
  64  *
  65  * Widget that displays any object that implements the #GtkTreeModel interface.
  66  *
  67  * Please refer to the <link linkend="TreeWidget">tree widget conceptual
  68  * overview</link> for an overview of all the objects and data types related
  69  * to the tree widget and how they work together.
  70  *
  71  * Several different coordinate systems are exposed in the GtkTreeView API.
  72  * These are:
  73  *
  74  * <inlinegraphic fileref="tree-view-coordinates.png" format="PNG"></inlinegraphic>
  75  * <variablelist><title>Coordinate systems in GtkTreeView API</title>
  76  * <varlistentry><term>Widget coordinates</term>
  77  * <listitem>
  78  * <para>
  79  * Coordinates relative to the widget (usually <literal>widget->window</literal>).
  80  * </para>
  81  * </listitem>
  82  * </varlistentry>
  83  * <varlistentry><term>Bin window coordinates</term>
  84  * <listitem>
  85  * <para>
  86  * Coordinates relative to the window that GtkTreeView renders to.
  87  * </para>
  88  * </listitem>
  89  * </varlistentry>
  90  * <varlistentry><term>Tree coordinates</term>
  91  * <listitem>
  92  * <para>
  93  * Coordinates relative to the entire scrollable area of GtkTreeView. These
  94  * coordinates start at (0, 0) for row 0 of the tree.
  95  * </para>
  96  * </listitem>
  97  * </varlistentry>
  98  * </variablelist>
  99  *
 100  * Several functions are available for converting between the different
 101  * coordinate systems.  The most common translations are between widget and bin
 102  * window coordinates and between bin window and tree coordinates. For the
 103  * former you can use gtk_tree_view_convert_widget_to_bin_window_coords()
 104  * (and vice versa), for the latter gtk_tree_view_convert_bin_window_to_tree_coords()
 105  * (and vice versa).
 106  *
 107  * <refsect2 id="GtkTreeView-BUILDER-UI">
 108  * <title>GtkTreeView as GtkBuildable</title>
 109  * The GtkTreeView implementation of the GtkBuildable interface accepts
 110  * #GtkTreeViewColumn objects as &lt;child&gt; elements and exposes the
 111  * internal #GtkTreeSelection in UI definitions.
 112  * <example>
 113  * <title>A UI definition fragment with GtkTreeView</title>
 114  * <programlisting><![CDATA[
 115  * <object class="GtkTreeView" id="treeview">
 116  *   <property name="model">liststore1</property>
 117  *   <child>
 118  *     <object class="GtkTreeViewColumn" id="test-column">
 119  *       <property name="title">Test</property>
 120  *       <child>
 121  *         <object class="GtkCellRendererText" id="test-renderer"/>
 122  *         <attributes>
 123  *           <attribute name="text">1</attribute>
 124  *         </attributes>
 125  *       </child>
 126  *     </object>
 127  *   </child>
 128  *   <child internal-child="selection">
 129  *     <object class="GtkTreeSelection" id="selection">
 130  *       <signal name="changed" handler="on_treeview_selection_changed"/>
 131  *     </object>
 132  *   </child>
 133  * </object>
 134  * ]]></programlisting>
 135  * </example>
 136  * </refsect2>
 137  */
 138
 139 enum
 140 {
 141   DRAG_COLUMN_WINDOW_STATE_UNSET = 0,
 142   DRAG_COLUMN_WINDOW_STATE_ORIGINAL = 1,
 143   DRAG_COLUMN_WINDOW_STATE_ARROW = 2,
 144   DRAG_COLUMN_WINDOW_STATE_ARROW_LEFT = 3,
 145   DRAG_COLUMN_WINDOW_STATE_ARROW_RIGHT = 4
 146 };
 147
 148 enum
 149 {
 150   RUBBER_BAND_OFF = 0,
 151   RUBBER_BAND_MAYBE_START = 1,
 152   RUBBER_BAND_ACTIVE = 2
 153 };
 154
 155 typedef enum {
 156   CLEAR_AND_SELECT = (1 << 0),
 157   CLAMP_NODE       = (1 << 1),
 158   CURSOR_INVALID   = (1 << 2)
 159 } SetCursorFlags;
 160
 161  /* This lovely little value is used to determine how far away from the title bar
 162   * you can move the mouse and still have a column drag work.
 163   */
 164 #define TREE_VIEW_COLUMN_DRAG_DEAD_MULTIPLIER(tree_view) (10*gtk_tree_view_get_effective_header_height(tree_view))
 165
 166 #ifdef __GNUC__
 167
 168 #define TREE_VIEW_INTERNAL_ASSERT(expr, ret)     G_STMT_START{          \
 169      if (!(expr))                                                       \
 170        {                                                                \
 171          g_log (G_LOG_DOMAIN,                                           \
 172                 G_LOG_LEVEL_CRITICAL,                                   \
 173                 "%s (%s): assertion `%s' failed.\n"                     \
 174                 "There is a disparity between the internal view of the GtkTreeView,\n"    \
 175                 "and the GtkTreeModel.  This generally means that the model has changed\n"\
 176                 "without letting the view know.  Any display from now on is likely to\n"  \
 177                 "be incorrect.\n",                                                        \
 178                 G_STRLOC,                                               \
 179                 G_STRFUNC,                                              \
 180                 #expr);                                                 \
 181          return ret;                                                    \
 182        };                               }G_STMT_END
 183
 184 #define TREE_VIEW_INTERNAL_ASSERT_VOID(expr)     G_STMT_START{          \
 185      if (!(expr))                                                       \
 186        {                                                                \
 187          g_log (G_LOG_DOMAIN,                                           \
 188                 G_LOG_LEVEL_CRITICAL,                                   \
 189                 "%s (%s): assertion `%s' failed.\n"                     \
 190                 "There is a disparity between the internal view of the GtkTreeView,\n"    \
 191                 "and the GtkTreeModel.  This generally means that the model has changed\n"\
 192                 "without letting the view know.  Any display from now on is likely to\n"  \
 193                 "be incorrect.\n",                                                        \
 194                 G_STRLOC,                                               \
 195                 G_STRFUNC,                                              \
 196                 #expr);                                                 \
 197          return;                                                        \
 198        };                               }G_STMT_END
 199
 200 #else
 201
 202 #define TREE_VIEW_INTERNAL_ASSERT(expr, ret)     G_STMT_START{          \
 203      if (!(expr))                                                       \
 204        {                                                                \
 205          g_log (G_LOG_DOMAIN,                                           \
 206                 G_LOG_LEVEL_CRITICAL,                                   \
 207                 "file %s: line %d: assertion `%s' failed.\n"       \
 208                 "There is a disparity between the internal view of the GtkTreeView,\n"    \
 209                 "and the GtkTreeModel.  This generally means that the model has changed\n"\
 210                 "without letting the view know.  Any display from now on is likely to\n"  \
 211                 "be incorrect.\n",                                                        \
 212                 __FILE__,                                               \
 213                 __LINE__,                                               \
 214                 #expr);                                                 \
 215          return ret;                                                    \
 216        };                               }G_STMT_END
 217
 218 #define TREE_VIEW_INTERNAL_ASSERT_VOID(expr)     G_STMT_START{          \
 219      if (!(expr))                                                       \
 220        {                                                                \
 221          g_log (G_LOG_DOMAIN,                                           \
 222                 G_LOG_LEVEL_CRITICAL,                                   \
 223                 "file %s: line %d: assertion '%s' failed.\n"            \
 224                 "There is a disparity between the internal view of the GtkTreeView,\n"    \
 225                 "and the GtkTreeModel.  This generally means that the model has changed\n"\
 226                 "without letting the view know.  Any display from now on is likely to\n"  \
 227                 "be incorrect.\n",                                                        \
 228                 __FILE__,                                               \
 229                 __LINE__,                                               \
 230                 #expr);                                                 \
 231          return;                                                        \
 232        };                               }G_STMT_END
 233 #endif
 234
 235 #define GTK_TREE_VIEW_PRIORITY_VALIDATE (GDK_PRIORITY_REDRAW + 5)
 236 #define GTK_TREE_VIEW_PRIORITY_SCROLL_SYNC (GTK_TREE_VIEW_PRIORITY_VALIDATE + 2)
 237 #define GTK_TREE_VIEW_TIME_MS_PER_IDLE 30
 238 #define SCROLL_EDGE_SIZE 15
 239 #define EXPANDER_EXTRA_PADDING 4
 240 #define GTK_TREE_VIEW_SEARCH_DIALOG_TIMEOUT 5000
 241 #define AUTO_EXPAND_TIMEOUT 500
 242
 243 /* Translate from bin_window coordinates to rbtree (tree coordinates) and
 244  * vice versa.
 245  */
 246 #define TREE_WINDOW_Y_TO_RBTREE_Y(tree_view,y) ((y) + tree_view->priv->dy)
 247 #define RBTREE_Y_TO_TREE_WINDOW_Y(tree_view,y) ((y) - tree_view->priv->dy)
 248
 249 typedef struct _GtkTreeViewColumnReorder GtkTreeViewColumnReorder;
 250 struct _GtkTreeViewColumnReorder
 251 {
 252   gint left_align;
 253   gint right_align;
 254   GtkTreeViewColumn *left_column;
 255   GtkTreeViewColumn *right_column;
 256 };
 257
 258 typedef struct _GtkTreeViewChild GtkTreeViewChild;
 259 struct _GtkTreeViewChild
 260 {
 261   GtkWidget *widget;
 262   gint x;
 263   gint y;
 264   gint width;
 265   gint height;
 266 };
 267
 268
 269 typedef struct _TreeViewDragInfo TreeViewDragInfo;
 270 struct _TreeViewDragInfo
 271 {
 272   GdkModifierType start_button_mask;
 273   GtkTargetList *_unused_source_target_list;
 274   GdkDragAction source_actions;
 275
 276   GtkTargetList *_unused_dest_target_list;
 277
 278   guint source_set : 1;
 279   guint dest_set : 1;
 280 };
 281
 282
 283 struct _GtkTreeViewPrivate
 284 {
 285   GtkTreeModel *model;
 286
 287   /* tree information */
 288   GtkRBTree *tree;
 289
 290   /* Container info */
 291   GList *children;
 292   gint width;
 293   gint height;
 294
 295   /* Adjustments */
 296   GtkAdjustment *hadjustment;
 297   GtkAdjustment *vadjustment;
 298   gint           min_display_width;
 299   gint           min_display_height;
 300
 301   /* Sub windows */
 302   GdkWindow *bin_window;
 303   GdkWindow *header_window;
 304
 305   /* Scroll position state keeping */
 306   GtkTreeRowReference *top_row;
 307   gint top_row_dy;
 308   /* dy == y pos of top_row + top_row_dy */
 309   /* we cache it for simplicity of the code */
 310   gint dy;
 311
 312   guint presize_handler_timer;
 313   guint validate_rows_timer;
 314   guint scroll_sync_timer;
 315
 316   /* Indentation and expander layout */
 317   gint expander_size;
 318   GtkTreeViewColumn *expander_column;
 319
 320   gint level_indentation;
 321
 322   /* Key navigation (focus), selection */
 323   gint cursor_offset;
 324
 325   GtkTreeRowReference *anchor;
 326   GtkRBNode *cursor_node;
 327   GtkRBTree *cursor_tree;
 328
 329   GtkTreeViewColumn *focus_column;
 330
 331   /* Current pressed node, previously pressed, prelight */
 332   GtkRBNode *button_pressed_node;
 333   GtkRBTree *button_pressed_tree;
 334
 335   gint pressed_button;
 336   gint press_start_x;
 337   gint press_start_y;
 338
 339   gint event_last_x;
 340   gint event_last_y;
 341
 342   guint last_button_time;
 343   gint last_button_x;
 344   gint last_button_y;
 345
 346   GtkRBNode *prelight_node;
 347   GtkRBTree *prelight_tree;
 348
 349   /* Cell Editing */
 350   GtkTreeViewColumn *edited_column;
 351
 352   /* The node that's currently being collapsed or expanded */
 353   GtkRBNode *expanded_collapsed_node;
 354   GtkRBTree *expanded_collapsed_tree;
 355   guint expand_collapse_timeout;
 356
 357   /* Auto expand/collapse timeout in hover mode */
 358   guint auto_expand_timeout;
 359
 360   /* Selection information */
 361   GtkTreeSelection *selection;
 362
 363   /* Header information */
 364   gint n_columns;
 365   GList *columns;
 366   gint header_height;
 367
 368   GtkTreeViewColumnDropFunc column_drop_func;
 369   gpointer column_drop_func_data;
 370   GDestroyNotify column_drop_func_data_destroy;
 371   GList *column_drag_info;
 372   GtkTreeViewColumnReorder *cur_reorder;
 373
 374   gint prev_width_before_expander;
 375
 376   /* Interactive Header reordering */
 377   GdkWindow *drag_window;
 378   GdkWindow *drag_highlight_window;
 379   GtkTreeViewColumn *drag_column;
 380   gint drag_column_x;
 381
 382   /* Interactive Header Resizing */
 383   gint drag_pos;
 384   gint x_drag;
 385
 386   /* Non-interactive Header Resizing, expand flag support */
 387   gint prev_width;
 388
 389   gint last_extra_space;
 390   gint last_extra_space_per_column;
 391   gint last_number_of_expand_columns;
 392
 393   /* ATK Hack */
 394   GtkTreeDestroyCountFunc destroy_count_func;
 395   gpointer destroy_count_data;
 396   GDestroyNotify destroy_count_destroy;
 397
 398   /* Scroll timeout (e.g. during dnd, rubber banding) */
 399   guint scroll_timeout;
 400
 401   /* Row drag-and-drop */
 402   GtkTreeRowReference *drag_dest_row;
 403   GtkTreeViewDropPosition drag_dest_pos;
 404   guint open_dest_timeout;
 405
 406   /* Rubber banding */
 407   gint rubber_band_status;
 408   gint rubber_band_x;
 409   gint rubber_band_y;
 410   gint rubber_band_extend;
 411   gint rubber_band_modify;
 412
 413   GtkRBNode *rubber_band_start_node;
 414   GtkRBTree *rubber_band_start_tree;
 415
 416   GtkRBNode *rubber_band_end_node;
 417   GtkRBTree *rubber_band_end_tree;
 418
 419   /* fixed height */
 420   gint fixed_height;
 421
 422   /* Scroll-to functionality when unrealized */
 423   GtkTreeRowReference *scroll_to_path;
 424   GtkTreeViewColumn *scroll_to_column;
 425   gfloat scroll_to_row_align;
 426   gfloat scroll_to_col_align;
 427
 428   /* Interactive search */
 429   gint selected_iter;
 430   gint search_column;
 431   GtkTreeViewSearchPositionFunc search_position_func;
 432   GtkTreeViewSearchEqualFunc search_equal_func;
 433   gpointer search_user_data;
 434   GDestroyNotify search_destroy;
 435   gpointer search_position_user_data;
 436   GDestroyNotify search_position_destroy;
 437   GtkWidget *search_window;
 438   GtkWidget *search_entry;
 439   gulong search_entry_changed_id;
 440   guint typeselect_flush_timeout;
 441
 442   /* Grid and tree lines */
 443   GtkTreeViewGridLines grid_lines;
 444   double grid_line_dashes[2];
 445   int grid_line_width;
 446
 447   gboolean tree_lines_enabled;
 448   double tree_line_dashes[2];
 449   int tree_line_width;
 450
 451   /* Row separators */
 452   GtkTreeViewRowSeparatorFunc row_separator_func;
 453   gpointer row_separator_data;
 454   GDestroyNotify row_separator_destroy;
 455
 456   /* Tooltip support */
 457   gint tooltip_column;
 458
 459   /* Here comes the bitfield */
 460   guint scroll_to_use_align : 1;
 461
 462   guint fixed_height_mode : 1;
 463   guint fixed_height_check : 1;
 464
 465   guint reorderable : 1;
 466   guint header_has_focus : 1;
 467   guint drag_column_window_state : 3;
 468   /* hint to display rows in alternating colors */
 469   guint has_rules : 1;
 470   guint mark_rows_col_dirty : 1;
 471
 472   /* for DnD */
 473   guint empty_view_drop : 1;
 474
 475   guint modify_selection_pressed : 1;
 476   guint extend_selection_pressed : 1;
 477
 478   guint init_hadjust_value : 1;
 479
 480   guint in_top_row_to_dy : 1;
 481
 482   /* interactive search */
 483   guint enable_search : 1;
 484   guint disable_popdown : 1;
 485   guint search_custom_entry_set : 1;
 486
 487   guint hover_selection : 1;
 488   guint hover_expand : 1;
 489   guint imcontext_changed : 1;
 490
 491   guint rubber_banding_enable : 1;
 492
 493   guint in_grab : 1;
 494
 495   guint post_validation_flag : 1;
 496
 497   /* Whether our key press handler is to avoid sending an unhandled binding to the search entry */
 498   guint search_entry_avoid_unhandled_binding : 1;
 499
 500   /* GtkScrollablePolicy needs to be checked when
 501    * driving the scrollable adjustment values */
 502   guint hscroll_policy : 1;
 503   guint vscroll_policy : 1;
 504
 505   /* GtkTreeView flags */
 506   guint is_list : 1;
 507   guint show_expanders : 1;
 508   guint in_column_resize : 1;
 509   guint arrow_prelit : 1;
 510   guint headers_visible : 1;
 511   guint draw_keyfocus : 1;
 512   guint model_setup : 1;
 513   guint in_column_drag : 1;
 514 };
 515
 516
 517 /* Signals */
 518 enum
 519 {
 520   ROW_ACTIVATED,
 521   TEST_EXPAND_ROW,
 522   TEST_COLLAPSE_ROW,
 523   ROW_EXPANDED,
 524   ROW_COLLAPSED,
 525   COLUMNS_CHANGED,
 526   CURSOR_CHANGED,
 527   MOVE_CURSOR,
 528   SELECT_ALL,
 529   UNSELECT_ALL,
 530   SELECT_CURSOR_ROW,
 531   TOGGLE_CURSOR_ROW,
 532   EXPAND_COLLAPSE_CURSOR_ROW,
 533   SELECT_CURSOR_PARENT,
 534   START_INTERACTIVE_SEARCH,
 535   LAST_SIGNAL
 536 };
 537
 538 /* Properties */
 539 enum {
 540   PROP_0,
 541   PROP_MODEL,
 542   PROP_HADJUSTMENT,
 543   PROP_VADJUSTMENT,
 544   PROP_HSCROLL_POLICY,
 545   PROP_VSCROLL_POLICY,
 546   PROP_HEADERS_VISIBLE,
 547   PROP_HEADERS_CLICKABLE,
 548   PROP_EXPANDER_COLUMN,
 549   PROP_REORDERABLE,
 550   PROP_RULES_HINT,
 551   PROP_ENABLE_SEARCH,
 552   PROP_SEARCH_COLUMN,
 553   PROP_FIXED_HEIGHT_MODE,
 554   PROP_HOVER_SELECTION,
 555   PROP_HOVER_EXPAND,
 556   PROP_SHOW_EXPANDERS,
 557   PROP_LEVEL_INDENTATION,
 558   PROP_RUBBER_BANDING,
 559   PROP_ENABLE_GRID_LINES,
 560   PROP_ENABLE_TREE_LINES,
 561   PROP_TOOLTIP_COLUMN
 562 };
 563
 564 /* object signals */
 565 static void     gtk_tree_view_finalize             (GObject          *object);
 566 static void     gtk_tree_view_set_property         (GObject         *object,
 567                                                     guint            prop_id,
 568                                                     const GValue    *value,
 569                                                     GParamSpec      *pspec);
 570 static void     gtk_tree_view_get_property         (GObject         *object,
 571                                                     guint            prop_id,
 572                                                     GValue          *value,
 573                                                     GParamSpec      *pspec);
 574
 575 /* gtkwidget signals */
 576 static void     gtk_tree_view_destroy              (GtkWidget        *widget);
 577 static void     gtk_tree_view_realize              (GtkWidget        *widget);
 578 static void     gtk_tree_view_unrealize            (GtkWidget        *widget);
 579 static void     gtk_tree_view_map                  (GtkWidget        *widget);
 580 static void     gtk_tree_view_get_preferred_width  (GtkWidget        *widget,
 581                                                     gint             *minimum,
 582                                                     gint             *natural);
 583 static void     gtk_tree_view_get_preferred_height (GtkWidget        *widget,
 584                                                     gint             *minimum,
 585                                                     gint             *natural);
 586 static void     gtk_tree_view_size_request         (GtkWidget        *widget,
 587                                                     GtkRequisition   *requisition,
 588                                                     gboolean          may_validate);
 589 static void     gtk_tree_view_size_allocate        (GtkWidget        *widget,
 590                                                     GtkAllocation    *allocation);
 591 static gboolean gtk_tree_view_draw                 (GtkWidget        *widget,
 592                                                     cairo_t          *cr);
 593 static gboolean gtk_tree_view_key_press            (GtkWidget        *widget,
 594                                                     GdkEventKey      *event);
 595 static gboolean gtk_tree_view_key_release          (GtkWidget        *widget,
 596                                                     GdkEventKey      *event);
 597 static gboolean gtk_tree_view_motion               (GtkWidget        *widget,
 598                                                     GdkEventMotion   *event);
 599 static gboolean gtk_tree_view_enter_notify         (GtkWidget        *widget,
 600                                                     GdkEventCrossing *event);
 601 static gboolean gtk_tree_view_leave_notify         (GtkWidget        *widget,
 602                                                     GdkEventCrossing *event);
 603 static gboolean gtk_tree_view_button_press         (GtkWidget        *widget,
 604                                                     GdkEventButton   *event);
 605 static gboolean gtk_tree_view_button_release       (GtkWidget        *widget,
 606                                                     GdkEventButton   *event);
 607 static gboolean gtk_tree_view_grab_broken          (GtkWidget          *widget,
 608                                                     GdkEventGrabBroken *event);
 609 #if 0
 610 static gboolean gtk_tree_view_configure            (GtkWidget         *widget,
 611                                                     GdkEventConfigure *event);
 612 #endif
 613
 614 static GtkWidgetPath * gtk_tree_view_get_path_for_child (GtkContainer *container,
 615                                                          GtkWidget    *child);
 616
 617 static void     gtk_tree_view_set_focus_child      (GtkContainer     *container,
 618                                                     GtkWidget        *child);
 619 static gint     gtk_tree_view_focus_out            (GtkWidget        *widget,
 620                                                     GdkEventFocus    *event);
 621 static gint     gtk_tree_view_focus                (GtkWidget        *widget,
 622                                                     GtkDirectionType  direction);
 623 static void     gtk_tree_view_grab_focus           (GtkWidget        *widget);
 624 static void     gtk_tree_view_style_updated        (GtkWidget        *widget);
 625 static void     gtk_tree_view_grab_notify          (GtkWidget        *widget,
 626                                                     gboolean          was_grabbed);
 627 static void     gtk_tree_view_state_flags_changed  (GtkWidget        *widget,
 628                                                     GtkStateFlags     previous_state);
 629
 630 /* container signals */
 631 static void     gtk_tree_view_remove               (GtkContainer     *container,
 632                                                     GtkWidget        *widget);
 633 static void     gtk_tree_view_forall               (GtkContainer     *container,
 634                                                     gboolean          include_internals,
 635                                                     GtkCallback       callback,
 636                                                     gpointer          callback_data);
 637
 638 /* Source side drag signals */
 639 static void gtk_tree_view_drag_begin       (GtkWidget        *widget,
 640                                             GdkDragContext   *context);
 641 static void gtk_tree_view_drag_end         (GtkWidget        *widget,
 642                                             GdkDragContext   *context);
 643 static void gtk_tree_view_drag_data_get    (GtkWidget        *widget,
 644                                             GdkDragContext   *context,
 645                                             GtkSelectionData *selection_data,
 646                                             guint             info,
 647                                             guint             time);
 648 static void gtk_tree_view_drag_data_delete (GtkWidget        *widget,
 649                                             GdkDragContext   *context);
 650
 651 /* Target side drag signals */
 652 static void     gtk_tree_view_drag_leave         (GtkWidget        *widget,
 653                                                   GdkDragContext   *context,
 654                                                   guint             time);
 655 static gboolean gtk_tree_view_drag_motion        (GtkWidget        *widget,
 656                                                   GdkDragContext   *context,
 657                                                   gint              x,
 658                                                   gint              y,
 659                                                   guint             time);
 660 static gboolean gtk_tree_view_drag_drop          (GtkWidget        *widget,
 661                                                   GdkDragContext   *context,
 662                                                   gint              x,
 663                                                   gint              y,
 664                                                   guint             time);
 665 static void     gtk_tree_view_drag_data_received (GtkWidget        *widget,
 666                                                   GdkDragContext   *context,
 667                                                   gint              x,
 668                                                   gint              y,
 669                                                   GtkSelectionData *selection_data,
 670                                                   guint             info,
 671                                                   guint             time);
 672
 673 /* tree_model signals */
 674 static gboolean gtk_tree_view_real_move_cursor            (GtkTreeView     *tree_view,
 675                                                            GtkMovementStep  step,
 676                                                            gint             count);
 677 static gboolean gtk_tree_view_real_select_all             (GtkTreeView     *tree_view);
 678 static gboolean gtk_tree_view_real_unselect_all           (GtkTreeView     *tree_view);
 679 static gboolean gtk_tree_view_real_select_cursor_row      (GtkTreeView     *tree_view,
 680                                                            gboolean         start_editing);
 681 static gboolean gtk_tree_view_real_toggle_cursor_row      (GtkTreeView     *tree_view);
 682 static gboolean gtk_tree_view_real_expand_collapse_cursor_row (GtkTreeView     *tree_view,
 683                                                                gboolean         logical,
 684                                                                gboolean         expand,
 685                                                                gboolean         open_all);
 686 static gboolean gtk_tree_view_real_select_cursor_parent   (GtkTreeView     *tree_view);
 687 static void gtk_tree_view_row_changed                     (GtkTreeModel    *model,
 688                                                            GtkTreePath     *path,
 689                                                            GtkTreeIter     *iter,
 690                                                            gpointer         data);
 691 static void gtk_tree_view_row_inserted                    (GtkTreeModel    *model,
 692                                                            GtkTreePath     *path,
 693                                                            GtkTreeIter     *iter,
 694                                                            gpointer         data);
 695 static void gtk_tree_view_row_has_child_toggled           (GtkTreeModel    *model,
 696                                                            GtkTreePath     *path,
 697                                                            GtkTreeIter     *iter,
 698                                                            gpointer         data);
 699 static void gtk_tree_view_row_deleted                     (GtkTreeModel    *model,
 700                                                            GtkTreePath     *path,
 701                                                            gpointer         data);
 702 static void gtk_tree_view_rows_reordered                  (GtkTreeModel    *model,
 703                                                            GtkTreePath     *parent,
 704                                                            GtkTreeIter     *iter,
 705                                                            gint            *new_order,
 706                                                            gpointer         data);
 707
 708 /* Incremental reflow */
 709 static gboolean validate_row             (GtkTreeView *tree_view,
 710                                           GtkRBTree   *tree,
 711                                           GtkRBNode   *node,
 712                                           GtkTreeIter *iter,
 713                                           GtkTreePath *path);
 714 static void     validate_visible_area    (GtkTreeView *tree_view);
 715 static gboolean validate_rows_handler    (GtkTreeView *tree_view);
 716 static gboolean do_validate_rows         (GtkTreeView *tree_view,
 717                                           gboolean     size_request);
 718 static gboolean validate_rows            (GtkTreeView *tree_view);
 719 static gboolean presize_handler_callback (gpointer     data);
 720 static void     install_presize_handler  (GtkTreeView *tree_view);
 721 static void     install_scroll_sync_handler (GtkTreeView *tree_view);
 722 static void     gtk_tree_view_set_top_row   (GtkTreeView *tree_view,
 723                                              GtkTreePath *path,
 724                                              gint         offset);
 725 static void     gtk_tree_view_dy_to_top_row (GtkTreeView *tree_view);
 726 static void     gtk_tree_view_top_row_to_dy (GtkTreeView *tree_view);
 727 static void     invalidate_empty_focus      (GtkTreeView *tree_view);
 728
 729 /* Internal functions */
 730 static gboolean gtk_tree_view_is_expander_column             (GtkTreeView        *tree_view,
 731                                                               GtkTreeViewColumn  *column);
 732 static inline gboolean gtk_tree_view_draw_expanders          (GtkTreeView        *tree_view);
 733 static void     gtk_tree_view_add_move_binding               (GtkBindingSet      *binding_set,
 734                                                               guint               keyval,
 735                                                               guint               modmask,
 736                                                               gboolean            add_shifted_binding,
 737                                                               GtkMovementStep     step,
 738                                                               gint                count);
 739 static gint     gtk_tree_view_unref_and_check_selection_tree (GtkTreeView        *tree_view,
 740                                                               GtkRBTree          *tree);
 741 static void     gtk_tree_view_queue_draw_path                (GtkTreeView        *tree_view,
 742                                                               GtkTreePath        *path,
 743                                                               const GdkRectangle *clip_rect);
 744 static void     gtk_tree_view_queue_draw_arrow               (GtkTreeView        *tree_view,
 745                                                               GtkRBTree          *tree,
 746                                                               GtkRBNode          *node);
 747 static void     gtk_tree_view_draw_arrow                     (GtkTreeView        *tree_view,
 748                                                               cairo_t            *cr,
 749                                                               GtkRBTree          *tree,
 750                                                               GtkRBNode          *node);
 751 static void     gtk_tree_view_get_arrow_xrange               (GtkTreeView        *tree_view,
 752                                                               GtkRBTree          *tree,
 753                                                               gint               *x1,
 754                                                               gint               *x2);
 755 static gint     gtk_tree_view_new_column_width               (GtkTreeView        *tree_view,
 756                                                               gint                i,
 757                                                               gint               *x);
 758 static void     gtk_tree_view_adjustment_changed             (GtkAdjustment      *adjustment,
 759                                                               GtkTreeView        *tree_view);
 760 static void     gtk_tree_view_build_tree                     (GtkTreeView        *tree_view,
 761                                                               GtkRBTree          *tree,
 762                                                               GtkTreeIter        *iter,
 763                                                               gint                depth,
 764                                                               gboolean            recurse);
 765 static void     gtk_tree_view_clamp_node_visible             (GtkTreeView        *tree_view,
 766                                                               GtkRBTree          *tree,
 767                                                               GtkRBNode          *node);
 768 static void     gtk_tree_view_clamp_column_visible           (GtkTreeView        *tree_view,
 769                                                               GtkTreeViewColumn  *column,
 770                                                               gboolean            focus_to_cell);
 771 static gboolean gtk_tree_view_maybe_begin_dragging_row       (GtkTreeView        *tree_view,
 772                                                               GdkEventMotion     *event);
 773 static void     gtk_tree_view_focus_to_cursor                (GtkTreeView        *tree_view);
 774 static void     gtk_tree_view_move_cursor_up_down            (GtkTreeView        *tree_view,
 775                                                               gint                count);
 776 static void     gtk_tree_view_move_cursor_page_up_down       (GtkTreeView        *tree_view,
 777                                                               gint                count);
 778 static void     gtk_tree_view_move_cursor_left_right         (GtkTreeView        *tree_view,
 779                                                               gint                count);
 780 static void     gtk_tree_view_move_cursor_start_end          (GtkTreeView        *tree_view,
 781                                                               gint                count);
 782 static gboolean gtk_tree_view_real_collapse_row              (GtkTreeView        *tree_view,
 783                                                               GtkTreePath        *path,
 784                                                               GtkRBTree          *tree,
 785                                                               GtkRBNode          *node,
 786                                                               gboolean            animate);
 787 static gboolean gtk_tree_view_real_expand_row                (GtkTreeView        *tree_view,
 788                                                               GtkTreePath        *path,
 789                                                               GtkRBTree          *tree,
 790                                                               GtkRBNode          *node,
 791                                                               gboolean            open_all,
 792                                                               gboolean            animate);
 793 static void     gtk_tree_view_real_set_cursor                (GtkTreeView        *tree_view,
 794                                                               GtkTreePath        *path,
 795                                                               SetCursorFlags      flags);
 796 static gboolean gtk_tree_view_has_can_focus_cell             (GtkTreeView        *tree_view);
 797 static void     column_sizing_notify                         (GObject            *object,
 798                                                               GParamSpec         *pspec,
 799                                                               gpointer            data);
 800 static void     gtk_tree_view_stop_rubber_band               (GtkTreeView        *tree_view);
 801 static void     update_prelight                              (GtkTreeView        *tree_view,
 802                                                               int                 x,
 803                                                               int                 y);
 804
 805 static inline gint gtk_tree_view_get_effective_header_height (GtkTreeView *tree_view);
 806
 807 static inline gint gtk_tree_view_get_cell_area_y_offset      (GtkTreeView *tree_view,
 808                                                               GtkRBTree   *tree,
 809                                                               GtkRBNode   *node,
 810                                                               gint         vertical_separator);
 811 static inline gint gtk_tree_view_get_cell_area_height        (GtkTreeView *tree_view,
 812                                                               GtkRBNode   *node,
 813                                                               gint         vertical_separator);
 814
 815 static inline gint gtk_tree_view_get_row_y_offset            (GtkTreeView *tree_view,
 816                                                               GtkRBTree   *tree,
 817                                                               GtkRBNode   *node);
 818 static inline gint gtk_tree_view_get_row_height              (GtkTreeView *tree_view,
 819                                                               GtkRBNode   *node);
 820
 821 /* interactive search */
 822 static void     gtk_tree_view_ensure_interactive_directory (GtkTreeView *tree_view);
 823 static void     gtk_tree_view_search_dialog_hide        (GtkWidget        *search_dialog,
 824                                                          GtkTreeView      *tree_view,
 825                                                          GdkDevice        *device);
 826 static void     gtk_tree_view_search_position_func      (GtkTreeView      *tree_view,
 827                                                          GtkWidget        *search_dialog,
 828                                                          gpointer          user_data);
 829 static void     gtk_tree_view_search_disable_popdown    (GtkEntry         *entry,
 830                                                          GtkMenu          *menu,
 831                                                          gpointer          data);
 832 static void     gtk_tree_view_search_preedit_changed    (GtkIMContext     *im_context,
 833                                                          GtkTreeView      *tree_view);
 834 static void     gtk_tree_view_search_activate           (GtkEntry         *entry,
 835                                                          GtkTreeView      *tree_view);
 836 static gboolean gtk_tree_view_real_search_enable_popdown(gpointer          data);
 837 static void     gtk_tree_view_search_enable_popdown     (GtkWidget        *widget,
 838                                                          gpointer          data);
 839 static gboolean gtk_tree_view_search_delete_event       (GtkWidget        *widget,
 840                                                          GdkEventAny      *event,
 841                                                          GtkTreeView      *tree_view);
 842 static gboolean gtk_tree_view_search_button_press_event (GtkWidget        *widget,
 843                                                          GdkEventButton   *event,
 844                                                          GtkTreeView      *tree_view);
 845 static gboolean gtk_tree_view_search_scroll_event       (GtkWidget        *entry,
 846                                                          GdkEventScroll   *event,
 847                                                          GtkTreeView      *tree_view);
 848 static gboolean gtk_tree_view_search_key_press_event    (GtkWidget        *entry,
 849                                                          GdkEventKey      *event,
 850                                                          GtkTreeView      *tree_view);
 851 static gboolean gtk_tree_view_search_move               (GtkWidget        *window,
 852                                                          GtkTreeView      *tree_view,
 853                                                          gboolean          up);
 854 static gboolean gtk_tree_view_search_equal_func         (GtkTreeModel     *model,
 855                                                          gint              column,
 856                                                          const gchar      *key,
 857                                                          GtkTreeIter      *iter,
 858                                                          gpointer          search_data);
 859 static gboolean gtk_tree_view_search_iter               (GtkTreeModel     *model,
 860                                                          GtkTreeSelection *selection,
 861                                                          GtkTreeIter      *iter,
 862                                                          const gchar      *text,
 863                                                          gint             *count,
 864                                                          gint              n);
 865 static void     gtk_tree_view_search_init               (GtkWidget        *entry,
 866                                                          GtkTreeView      *tree_view);
 867 static void     gtk_tree_view_put                       (GtkTreeView      *tree_view,
 868                                                          GtkWidget        *child_widget,
 869                                                          gint              x,
 870                                                          gint              y,
 871                                                          gint              width,
 872                                                          gint              height);
 873 static gboolean gtk_tree_view_start_editing             (GtkTreeView      *tree_view,
 874                                                          GtkTreePath      *cursor_path,
 875                                                          gboolean          edit_only);
 876 static void gtk_tree_view_stop_editing                  (GtkTreeView *tree_view,
 877                                                          gboolean     cancel_editing);
 878 static gboolean gtk_tree_view_real_start_interactive_search (GtkTreeView *tree_view,
 879                                                              GdkDevice   *device,
 880                                                              gboolean     keybinding);
 881 static gboolean gtk_tree_view_start_interactive_search      (GtkTreeView *tree_view);
 882 static GtkTreeViewColumn *gtk_tree_view_get_drop_column (GtkTreeView       *tree_view,
 883                                                          GtkTreeViewColumn *column,
 884                                                          gint               drop_position);
 885
 886 /* GtkBuildable */
 887 static void     gtk_tree_view_buildable_add_child          (GtkBuildable      *tree_view,
 888                                                             GtkBuilder        *builder,
 889                                                             GObject           *child,
 890                                                             const gchar       *type);
 891 static GObject *gtk_tree_view_buildable_get_internal_child (GtkBuildable      *buildable,
 892                                                             GtkBuilder        *builder,
 893                                                             const gchar       *childname);
 894 static void     gtk_tree_view_buildable_init               (GtkBuildableIface *iface);
 895
 896 static GtkAdjustment *gtk_tree_view_do_get_hadjustment (GtkTreeView   *tree_view);
 897 static void           gtk_tree_view_do_set_hadjustment (GtkTreeView   *tree_view,
 898                                                         GtkAdjustment *adjustment);
 899 static GtkAdjustment *gtk_tree_view_do_get_vadjustment (GtkTreeView   *tree_view);
 900 static void           gtk_tree_view_do_set_vadjustment (GtkTreeView   *tree_view,
 901                                                         GtkAdjustment *adjustment);
 902
 903 static gboolean scroll_row_timeout                   (gpointer     data);
 904 static void     add_scroll_timeout                   (GtkTreeView *tree_view);
 905 static void     remove_scroll_timeout                (GtkTreeView *tree_view);
 906
 907 static guint tree_view_signals [LAST_SIGNAL] = { 0 };
 908
 909 \f
 910
 911 /* GType Methods
 912  */
 913
 914 G_DEFINE_TYPE_WITH_CODE (GtkTreeView, gtk_tree_view, GTK_TYPE_CONTAINER,
 915                          G_IMPLEMENT_INTERFACE (GTK_TYPE_BUILDABLE,
 916                                                 gtk_tree_view_buildable_init)
 917                          G_IMPLEMENT_INTERFACE (GTK_TYPE_SCROLLABLE, NULL))
 918
 919 static void
 920 gtk_tree_view_class_init (GtkTreeViewClass *class)
 921 {
 922   GObjectClass *o_class;
 923   GtkWidgetClass *widget_class;
 924   GtkContainerClass *container_class;
 925   GtkBindingSet *binding_set;
 926
 927   binding_set = gtk_binding_set_by_class (class);
 928
 929   o_class = (GObjectClass *) class;
 930   widget_class = (GtkWidgetClass *) class;
 931   container_class = (GtkContainerClass *) class;
 932
 933   /* GObject signals */
 934   o_class->set_property = gtk_tree_view_set_property;
 935   o_class->get_property = gtk_tree_view_get_property;
 936   o_class->finalize = gtk_tree_view_finalize;
 937
 938   /* GtkWidget signals */
 939   widget_class->destroy = gtk_tree_view_destroy;
 940   widget_class->map = gtk_tree_view_map;
 941   widget_class->realize = gtk_tree_view_realize;
 942   widget_class->unrealize = gtk_tree_view_unrealize;
 943   widget_class->get_preferred_width = gtk_tree_view_get_preferred_width;
 944   widget_class->get_preferred_height = gtk_tree_view_get_preferred_height;
 945   widget_class->size_allocate = gtk_tree_view_size_allocate;
 946   widget_class->button_press_event = gtk_tree_view_button_press;
 947   widget_class->button_release_event = gtk_tree_view_button_release;
 948   widget_class->grab_broken_event = gtk_tree_view_grab_broken;
 949   /*widget_class->configure_event = gtk_tree_view_configure;*/
 950   widget_class->motion_notify_event = gtk_tree_view_motion;
 951   widget_class->draw = gtk_tree_view_draw;
 952   widget_class->key_press_event = gtk_tree_view_key_press;
 953   widget_class->key_release_event = gtk_tree_view_key_release;
 954   widget_class->enter_notify_event = gtk_tree_view_enter_notify;
 955   widget_class->leave_notify_event = gtk_tree_view_leave_notify;
 956   widget_class->focus_out_event = gtk_tree_view_focus_out;
 957   widget_class->drag_begin = gtk_tree_view_drag_begin;
 958   widget_class->drag_end = gtk_tree_view_drag_end;
 959   widget_class->drag_data_get = gtk_tree_view_drag_data_get;
 960   widget_class->drag_data_delete = gtk_tree_view_drag_data_delete;
 961   widget_class->drag_leave = gtk_tree_view_drag_leave;
 962   widget_class->drag_motion = gtk_tree_view_drag_motion;
 963   widget_class->drag_drop = gtk_tree_view_drag_drop;
 964   widget_class->drag_data_received = gtk_tree_view_drag_data_received;
 965   widget_class->focus = gtk_tree_view_focus;
 966   widget_class->grab_focus = gtk_tree_view_grab_focus;
 967   widget_class->style_updated = gtk_tree_view_style_updated;
 968   widget_class->grab_notify = gtk_tree_view_grab_notify;
 969   widget_class->state_flags_changed = gtk_tree_view_state_flags_changed;
 970
 971   /* GtkContainer signals */
 972   container_class->remove = gtk_tree_view_remove;
 973   container_class->forall = gtk_tree_view_forall;
 974   container_class->set_focus_child = gtk_tree_view_set_focus_child;
 975   container_class->get_path_for_child = gtk_tree_view_get_path_for_child;
 976
 977   class->move_cursor = gtk_tree_view_real_move_cursor;
 978   class->select_all = gtk_tree_view_real_select_all;
 979   class->unselect_all = gtk_tree_view_real_unselect_all;
 980   class->select_cursor_row = gtk_tree_view_real_select_cursor_row;
 981   class->toggle_cursor_row = gtk_tree_view_real_toggle_cursor_row;
 982   class->expand_collapse_cursor_row = gtk_tree_view_real_expand_collapse_cursor_row;
 983   class->select_cursor_parent = gtk_tree_view_real_select_cursor_parent;
 984   class->start_interactive_search = gtk_tree_view_start_interactive_search;
 985
 986   /* Properties */
 987
 988   g_object_class_install_property (o_class,
 989                                    PROP_MODEL,
 990                                    g_param_spec_object ("model",
 991                                                         P_("TreeView Model"),
 992                                                         P_("The model for the tree view"),
 993                                                         GTK_TYPE_TREE_MODEL,
 994                                                         GTK_PARAM_READWRITE));
 995
 996   g_object_class_override_property (o_class, PROP_HADJUSTMENT,    "hadjustment");
 997   g_object_class_override_property (o_class, PROP_VADJUSTMENT,    "vadjustment");
 998   g_object_class_override_property (o_class, PROP_HSCROLL_POLICY, "hscroll-policy");
 999   g_object_class_override_property (o_class, PROP_VSCROLL_POLICY, "vscroll-policy");
1000
1001   g_object_class_install_property (o_class,
1002                                    PROP_HEADERS_VISIBLE,
1003                                    g_param_spec_boolean ("headers-visible",
1004                                                          P_("Headers Visible"),
1005                                                          P_("Show the column header buttons"),
1006                                                          TRUE,
1007                                                          GTK_PARAM_READWRITE));
1008
1009   g_object_class_install_property (o_class,
1010                                    PROP_HEADERS_CLICKABLE,
1011                                    g_param_spec_boolean ("headers-clickable",
1012                                                          P_("Headers Clickable"),
1013                                                          P_("Column headers respond to click events"),
1014                                                          TRUE,
1015                                                          GTK_PARAM_READWRITE));
1016
1017   g_object_class_install_property (o_class,
1018                                    PROP_EXPANDER_COLUMN,
1019                                    g_param_spec_object ("expander-column",
1020                                                         P_("Expander Column"),
1021                                                         P_("Set the column for the expander column"),
1022                                                         GTK_TYPE_TREE_VIEW_COLUMN,
1023                                                         GTK_PARAM_READWRITE));
1024
1025   g_object_class_install_property (o_class,
1026                                    PROP_REORDERABLE,
1027                                    g_param_spec_boolean ("reorderable",
1028                                                          P_("Reorderable"),
1029                                                          P_("View is reorderable"),
1030                                                          FALSE,
1031                                                          GTK_PARAM_READWRITE));
1032
1033   g_object_class_install_property (o_class,
1034                                    PROP_RULES_HINT,
1035                                    g_param_spec_boolean ("rules-hint",
1036                                                          P_("Rules Hint"),
1037                                                          P_("Set a hint to the theme engine to draw rows in alternating colors"),
1038                                                          FALSE,
1039                                                          GTK_PARAM_READWRITE));
1040
1041     g_object_class_install_property (o_class,
1042                                      PROP_ENABLE_SEARCH,
1043                                      g_param_spec_boolean ("enable-search",
1044                                                            P_("Enable Search"),
1045                                                            P_("View allows user to search through columns interactively"),
1046                                                            TRUE,
1047                                                            GTK_PARAM_READWRITE));
1048
1049     g_object_class_install_property (o_class,
1050                                      PROP_SEARCH_COLUMN,
1051                                      g_param_spec_int ("search-column",
1052                                                        P_("Search Column"),
1053                                                        P_("Model column to search through during interactive search"),
1054                                                        -1,
1055                                                        G_MAXINT,
1056                                                        -1,
1057                                                        GTK_PARAM_READWRITE));
1058
1059     /**
1060      * GtkTreeView:fixed-height-mode:
1061      *
1062      * Setting the ::fixed-height-mode property to %TRUE speeds up
1063      * #GtkTreeView by assuming that all rows have the same height.
1064      * Only enable this option if all rows are the same height.
1065      * Please see gtk_tree_view_set_fixed_height_mode() for more
1066      * information on this option.
1067      *
1068      * Since: 2.4
1069      **/
1070     g_object_class_install_property (o_class,
1071                                      PROP_FIXED_HEIGHT_MODE,
1072                                      g_param_spec_boolean ("fixed-height-mode",
1073                                                            P_("Fixed Height Mode"),
1074                                                            P_("Speeds up GtkTreeView by assuming that all rows have the same height"),
1075                                                            FALSE,
1076                                                            GTK_PARAM_READWRITE));
1077
1078     /**
1079      * GtkTreeView:hover-selection:
1080      *
1081      * Enables or disables the hover selection mode of @tree_view.
1082      * Hover selection makes the selected row follow the pointer.
1083      * Currently, this works only for the selection modes
1084      * %GTK_SELECTION_SINGLE and %GTK_SELECTION_BROWSE.
1085      *
1086      * This mode is primarily intended for treeviews in popups, e.g.
1087      * in #GtkComboBox or #GtkEntryCompletion.
1088      *
1089      * Since: 2.6
1090      */
1091     g_object_class_install_property (o_class,
1092                                      PROP_HOVER_SELECTION,
1093                                      g_param_spec_boolean ("hover-selection",
1094                                                            P_("Hover Selection"),
1095                                                            P_("Whether the selection should follow the pointer"),
1096                                                            FALSE,
1097                                                            GTK_PARAM_READWRITE));
1098
1099     /**
1100      * GtkTreeView:hover-expand:
1101      *
1102      * Enables or disables the hover expansion mode of @tree_view.
1103      * Hover expansion makes rows expand or collapse if the pointer moves
1104      * over them.
1105      *
1106      * This mode is primarily intended for treeviews in popups, e.g.
1107      * in #GtkComboBox or #GtkEntryCompletion.
1108      *
1109      * Since: 2.6
1110      */
1111     g_object_class_install_property (o_class,
1112                                      PROP_HOVER_EXPAND,
1113                                      g_param_spec_boolean ("hover-expand",
1114                                                            P_("Hover Expand"),
1115                                                            P_("Whether rows should be expanded/collapsed when the pointer moves over them"),
1116                                                            FALSE,
1117                                                            GTK_PARAM_READWRITE));
1118
1119     /**
1120      * GtkTreeView:show-expanders:
1121      *
1122      * %TRUE if the view has expanders.
1123      *
1124      * Since: 2.12
1125      */
1126     g_object_class_install_property (o_class,
1127                                      PROP_SHOW_EXPANDERS,
1128                                      g_param_spec_boolean ("show-expanders",
1129                                                            P_("Show Expanders"),
1130                                                            P_("View has expanders"),
1131                                                            TRUE,
1132                                                            GTK_PARAM_READWRITE));
1133
1134     /**
1135      * GtkTreeView:level-indentation:
1136      *
1137      * Extra indentation for each level.
1138      *
1139      * Since: 2.12
1140      */
1141     g_object_class_install_property (o_class,
1142                                      PROP_LEVEL_INDENTATION,
1143                                      g_param_spec_int ("level-indentation",
1144                                                        P_("Level Indentation"),
1145                                                        P_("Extra indentation for each level"),
1146                                                        0,
1147                                                        G_MAXINT,
1148                                                        0,
1149                                                        GTK_PARAM_READWRITE));
1150
1151     g_object_class_install_property (o_class,
1152                                      PROP_RUBBER_BANDING,
1153                                      g_param_spec_boolean ("rubber-banding",
1154                                                            P_("Rubber Banding"),
1155                                                            P_("Whether to enable selection of multiple items by dragging the mouse pointer"),
1156                                                            FALSE,
1157                                                            GTK_PARAM_READWRITE));
1158
1159     g_object_class_install_property (o_class,
1160                                      PROP_ENABLE_GRID_LINES,
1161                                      g_param_spec_enum ("enable-grid-lines",
1162                                                         P_("Enable Grid Lines"),
1163                                                         P_("Whether grid lines should be drawn in the tree view"),
1164                                                         GTK_TYPE_TREE_VIEW_GRID_LINES,
1165                                                         GTK_TREE_VIEW_GRID_LINES_NONE,
1166                                                         GTK_PARAM_READWRITE));
1167
1168     g_object_class_install_property (o_class,
1169                                      PROP_ENABLE_TREE_LINES,
1170                                      g_param_spec_boolean ("enable-tree-lines",
1171                                                            P_("Enable Tree Lines"),
1172                                                            P_("Whether tree lines should be drawn in the tree view"),
1173                                                            FALSE,
1174                                                            GTK_PARAM_READWRITE));
1175
1176     g_object_class_install_property (o_class,
1177                                      PROP_TOOLTIP_COLUMN,
1178                                      g_param_spec_int ("tooltip-column",
1179                                                        P_("Tooltip Column"),
1180                                                        P_("The column in the model containing the tooltip texts for the rows"),
1181                                                        -1,
1182                                                        G_MAXINT,
1183                                                        -1,
1184                                                        GTK_PARAM_READWRITE));
1185
1186   /* Style properties */
1187 #define _TREE_VIEW_EXPANDER_SIZE 14
1188 #define _TREE_VIEW_VERTICAL_SEPARATOR 2
1189 #define _TREE_VIEW_HORIZONTAL_SEPARATOR 2
1190
1191   gtk_widget_class_install_style_property (widget_class,
1192                                            g_param_spec_int ("expander-size",
1193                                                              P_("Expander Size"),
1194                                                              P_("Size of the expander arrow"),
1195                                                              0,
1196                                                              G_MAXINT,
1197                                                              _TREE_VIEW_EXPANDER_SIZE,
1198                                                              GTK_PARAM_READABLE));
1199
1200   gtk_widget_class_install_style_property (widget_class,
1201                                            g_param_spec_int ("vertical-separator",
1202                                                              P_("Vertical Separator Width"),
1203                                                              P_("Vertical space between cells.  Must be an even number"),
1204                                                              0,
1205                                                              G_MAXINT,
1206                                                              _TREE_VIEW_VERTICAL_SEPARATOR,
1207                                                              GTK_PARAM_READABLE));
1208
1209   gtk_widget_class_install_style_property (widget_class,
1210                                            g_param_spec_int ("horizontal-separator",
1211                                                              P_("Horizontal Separator Width"),
1212                                                              P_("Horizontal space between cells.  Must be an even number"),
1213                                                              0,
1214                                                              G_MAXINT,
1215                                                              _TREE_VIEW_HORIZONTAL_SEPARATOR,
1216                                                              GTK_PARAM_READABLE));
1217
1218   gtk_widget_class_install_style_property (widget_class,
1219                                            g_param_spec_boolean ("allow-rules",
1220                                                                  P_("Allow Rules"),
1221                                                                  P_("Allow drawing of alternating color rows"),
1222                                                                  TRUE,
1223                                                                  GTK_PARAM_READABLE));
1224
1225   gtk_widget_class_install_style_property (widget_class,
1226                                            g_param_spec_boolean ("indent-expanders",
1227                                                                  P_("Indent Expanders"),
1228                                                                  P_("Make the expanders indented"),
1229                                                                  TRUE,
1230                                                                  GTK_PARAM_READABLE));
1231
1232   gtk_widget_class_install_style_property (widget_class,
1233                                            g_param_spec_boxed ("even-row-color",
1234                                                                P_("Even Row Color"),
1235                                                                P_("Color to use for even rows"),
1236                                                                GDK_TYPE_COLOR,
1237                                                                GTK_PARAM_READABLE));
1238
1239   gtk_widget_class_install_style_property (widget_class,
1240                                            g_param_spec_boxed ("odd-row-color",
1241                                                                P_("Odd Row Color"),
1242                                                                P_("Color to use for odd rows"),
1243                                                                GDK_TYPE_COLOR,
1244                                                                GTK_PARAM_READABLE));
1245
1246   gtk_widget_class_install_style_property (widget_class,
1247                                            g_param_spec_int ("grid-line-width",
1248                                                              P_("Grid line width"),
1249                                                              P_("Width, in pixels, of the tree view grid lines"),
1250                                                              0, G_MAXINT, 1,
1251                                                              GTK_PARAM_READABLE));
1252
1253   gtk_widget_class_install_style_property (widget_class,
1254                                            g_param_spec_int ("tree-line-width",
1255                                                              P_("Tree line width"),
1256                                                              P_("Width, in pixels, of the tree view lines"),
1257                                                              0, G_MAXINT, 1,
1258                                                              GTK_PARAM_READABLE));
1259
1260   gtk_widget_class_install_style_property (widget_class,
1261                                            g_param_spec_string ("grid-line-pattern",
1262                                                                 P_("Grid line pattern"),
1263                                                                 P_("Dash pattern used to draw the tree view grid lines"),
1264                                                                 "\1\1",
1265                                                                 GTK_PARAM_READABLE));
1266
1267   gtk_widget_class_install_style_property (widget_class,
1268                                            g_param_spec_string ("tree-line-pattern",
1269                                                                 P_("Tree line pattern"),
1270                                                                 P_("Dash pattern used to draw the tree view lines"),
1271                                                                 "\1\1",
1272                                                                 GTK_PARAM_READABLE));
1273
1274   /* Signals */
1275   /**
1276    * GtkTreeView::row-activated:
1277    * @tree_view: the object on which the signal is emitted
1278    * @path: the #GtkTreePath for the activated row
1279    * @column: the #GtkTreeViewColumn in which the activation occurred
1280    *
1281    * The "row-activated" signal is emitted when the method
1282    * gtk_tree_view_row_activated() is called or the user double clicks
1283    * a treeview row. It is also emitted when a non-editable row is
1284    * selected and one of the keys: Space, Shift+Space, Return or
1285    * Enter is pressed.
1286    *
1287    * For selection handling refer to the <link linkend="TreeWidget">tree
1288    * widget conceptual overview</link> as well as #GtkTreeSelection.
1289    */
1290   tree_view_signals[ROW_ACTIVATED] =
1291     g_signal_new (I_("row-activated"),
1292                   G_TYPE_FROM_CLASS (o_class),
1293                   G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
1294                   G_STRUCT_OFFSET (GtkTreeViewClass, row_activated),
1295                   NULL, NULL,
1296                   _gtk_marshal_VOID__BOXED_OBJECT,
1297                   G_TYPE_NONE, 2,
1298                   GTK_TYPE_TREE_PATH,
1299                   GTK_TYPE_TREE_VIEW_COLUMN);
1300
1301   /**
1302    * GtkTreeView::test-expand-row:
1303    * @tree_view: the object on which the signal is emitted
1304    * @iter: the tree iter of the row to expand
1305    * @path: a tree path that points to the row
1306    *
1307    * The given row is about to be expanded (show its children nodes). Use this
1308    * signal if you need to control the expandability of individual rows.
1309    *
1310    * Returns: %FALSE to allow expansion, %TRUE to reject
1311    */
1312   tree_view_signals[TEST_EXPAND_ROW] =
1313     g_signal_new (I_("test-expand-row"),
1314                   G_TYPE_FROM_CLASS (o_class),
1315                   G_SIGNAL_RUN_LAST,
1316                   G_STRUCT_OFFSET (GtkTreeViewClass, test_expand_row),
1317                   _gtk_boolean_handled_accumulator, NULL,
1318                   _gtk_marshal_BOOLEAN__BOXED_BOXED,
1319                   G_TYPE_BOOLEAN, 2,
1320                   GTK_TYPE_TREE_ITER,
1321                   GTK_TYPE_TREE_PATH);
1322
1323   /**
1324    * GtkTreeView::test-collapse-row:
1325    * @tree_view: the object on which the signal is emitted
1326    * @iter: the tree iter of the row to collapse
1327    * @path: a tree path that points to the row
1328    *
1329    * The given row is about to be collapsed (hide its children nodes). Use this
1330    * signal if you need to control the collapsibility of individual rows.
1331    *
1332    * Returns: %FALSE to allow collapsing, %TRUE to reject
1333    */
1334   tree_view_signals[TEST_COLLAPSE_ROW] =
1335     g_signal_new (I_("test-collapse-row"),
1336                   G_TYPE_FROM_CLASS (o_class),
1337                   G_SIGNAL_RUN_LAST,
1338                   G_STRUCT_OFFSET (GtkTreeViewClass, test_collapse_row),
1339                   _gtk_boolean_handled_accumulator, NULL,
1340                   _gtk_marshal_BOOLEAN__BOXED_BOXED,
1341                   G_TYPE_BOOLEAN, 2,
1342                   GTK_TYPE_TREE_ITER,
1343                   GTK_TYPE_TREE_PATH);
1344
1345   /**
1346    * GtkTreeView::row-expanded:
1347    * @tree_view: the object on which the signal is emitted
1348    * @iter: the tree iter of the expanded row
1349    * @path: a tree path that points to the row
1350    *
1351    * The given row has been expanded (child nodes are shown).
1352    */
1353   tree_view_signals[ROW_EXPANDED] =
1354     g_signal_new (I_("row-expanded"),
1355                   G_TYPE_FROM_CLASS (o_class),
1356                   G_SIGNAL_RUN_LAST,
1357                   G_STRUCT_OFFSET (GtkTreeViewClass, row_expanded),
1358                   NULL, NULL,
1359                   _gtk_marshal_VOID__BOXED_BOXED,
1360                   G_TYPE_NONE, 2,
1361                   GTK_TYPE_TREE_ITER,
1362                   GTK_TYPE_TREE_PATH);
1363
1364   /**
1365    * GtkTreeView::row-collapsed:
1366    * @tree_view: the object on which the signal is emitted
1367    * @iter: the tree iter of the collapsed row
1368    * @path: a tree path that points to the row
1369    *
1370    * The given row has been collapsed (child nodes are hidden).
1371    */
1372   tree_view_signals[ROW_COLLAPSED] =
1373     g_signal_new (I_("row-collapsed"),
1374                   G_TYPE_FROM_CLASS (o_class),
1375                   G_SIGNAL_RUN_LAST,
1376                   G_STRUCT_OFFSET (GtkTreeViewClass, row_collapsed),
1377                   NULL, NULL,
1378                   _gtk_marshal_VOID__BOXED_BOXED,
1379                   G_TYPE_NONE, 2,
1380                   GTK_TYPE_TREE_ITER,
1381                   GTK_TYPE_TREE_PATH);
1382
1383   /**
1384    * GtkTreeView::columns-changed:
1385    * @tree_view: the object on which the signal is emitted
1386    *
1387    * The number of columns of the treeview has changed.
1388    */
1389   tree_view_signals[COLUMNS_CHANGED] =
1390     g_signal_new (I_("columns-changed"),
1391                   G_TYPE_FROM_CLASS (o_class),
1392                   G_SIGNAL_RUN_LAST,
1393                   G_STRUCT_OFFSET (GtkTreeViewClass, columns_changed),
1394                   NULL, NULL,
1395                   _gtk_marshal_VOID__VOID,
1396                   G_TYPE_NONE, 0);
1397
1398   /**
1399    * GtkTreeView::cursor-changed:
1400    * @tree_view: the object on which the signal is emitted
1401    *
1402    * The position of the cursor (focused cell) has changed.
1403    */
1404   tree_view_signals[CURSOR_CHANGED] =
1405     g_signal_new (I_("cursor-changed"),
1406                   G_TYPE_FROM_CLASS (o_class),
1407                   G_SIGNAL_RUN_LAST,
1408                   G_STRUCT_OFFSET (GtkTreeViewClass, cursor_changed),
1409                   NULL, NULL,
1410                   _gtk_marshal_VOID__VOID,
1411                   G_TYPE_NONE, 0);
1412
1413   tree_view_signals[MOVE_CURSOR] =
1414     g_signal_new (I_("move-cursor"),
1415                   G_TYPE_FROM_CLASS (o_class),
1416                   G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
1417                   G_STRUCT_OFFSET (GtkTreeViewClass, move_cursor),
1418                   NULL, NULL,
1419                   _gtk_marshal_BOOLEAN__ENUM_INT,
1420                   G_TYPE_BOOLEAN, 2,
1421                   GTK_TYPE_MOVEMENT_STEP,
1422                   G_TYPE_INT);
1423
1424   tree_view_signals[SELECT_ALL] =
1425     g_signal_new (I_("select-all"),
1426                   G_TYPE_FROM_CLASS (o_class),
1427                   G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
1428                   G_STRUCT_OFFSET (GtkTreeViewClass, select_all),
1429                   NULL, NULL,
1430                   _gtk_marshal_BOOLEAN__VOID,
1431                   G_TYPE_BOOLEAN, 0);
1432
1433   tree_view_signals[UNSELECT_ALL] =
1434     g_signal_new (I_("unselect-all"),
1435                   G_TYPE_FROM_CLASS (o_class),
1436                   G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
1437                   G_STRUCT_OFFSET (GtkTreeViewClass, unselect_all),
1438                   NULL, NULL,
1439                   _gtk_marshal_BOOLEAN__VOID,
1440                   G_TYPE_BOOLEAN, 0);
1441
1442   tree_view_signals[SELECT_CURSOR_ROW] =
1443     g_signal_new (I_("select-cursor-row"),
1444                   G_TYPE_FROM_CLASS (o_class),
1445                   G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
1446                   G_STRUCT_OFFSET (GtkTreeViewClass, select_cursor_row),
1447                   NULL, NULL,
1448                   _gtk_marshal_BOOLEAN__BOOLEAN,
1449                   G_TYPE_BOOLEAN, 1,
1450                   G_TYPE_BOOLEAN);
1451
1452   tree_view_signals[TOGGLE_CURSOR_ROW] =
1453     g_signal_new (I_("toggle-cursor-row"),
1454                   G_TYPE_FROM_CLASS (o_class),
1455                   G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
1456                   G_STRUCT_OFFSET (GtkTreeViewClass, toggle_cursor_row),
1457                   NULL, NULL,
1458                   _gtk_marshal_BOOLEAN__VOID,
1459                   G_TYPE_BOOLEAN, 0);
1460
1461   tree_view_signals[EXPAND_COLLAPSE_CURSOR_ROW] =
1462     g_signal_new (I_("expand-collapse-cursor-row"),
1463                   G_TYPE_FROM_CLASS (o_class),
1464                   G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
1465                   G_STRUCT_OFFSET (GtkTreeViewClass, expand_collapse_cursor_row),
1466                   NULL, NULL,
1467                   _gtk_marshal_BOOLEAN__BOOLEAN_BOOLEAN_BOOLEAN,
1468                   G_TYPE_BOOLEAN, 3,
1469                   G_TYPE_BOOLEAN,
1470                   G_TYPE_BOOLEAN,
1471                   G_TYPE_BOOLEAN);
1472
1473   tree_view_signals[SELECT_CURSOR_PARENT] =
1474     g_signal_new (I_("select-cursor-parent"),
1475                   G_TYPE_FROM_CLASS (o_class),
1476                   G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
1477                   G_STRUCT_OFFSET (GtkTreeViewClass, select_cursor_parent),
1478                   NULL, NULL,
1479                   _gtk_marshal_BOOLEAN__VOID,
1480                   G_TYPE_BOOLEAN, 0);
1481
1482   tree_view_signals[START_INTERACTIVE_SEARCH] =
1483     g_signal_new (I_("start-interactive-search"),
1484                   G_TYPE_FROM_CLASS (o_class),
1485                   G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
1486                   G_STRUCT_OFFSET (GtkTreeViewClass, start_interactive_search),
1487                   NULL, NULL,
1488                   _gtk_marshal_BOOLEAN__VOID,
1489                   G_TYPE_BOOLEAN, 0);
1490
1491   /* Key bindings */
1492   gtk_tree_view_add_move_binding (binding_set, GDK_KEY_Up, 0, TRUE,
1493                                   GTK_MOVEMENT_DISPLAY_LINES, -1);
1494   gtk_tree_view_add_move_binding (binding_set, GDK_KEY_KP_Up, 0, TRUE,
1495                                   GTK_MOVEMENT_DISPLAY_LINES, -1);
1496
1497   gtk_tree_view_add_move_binding (binding_set, GDK_KEY_Down, 0, TRUE,
1498                                   GTK_MOVEMENT_DISPLAY_LINES, 1);
1499   gtk_tree_view_add_move_binding (binding_set, GDK_KEY_KP_Down, 0, TRUE,
1500                                   GTK_MOVEMENT_DISPLAY_LINES, 1);
1501
1502   gtk_tree_view_add_move_binding (binding_set, GDK_KEY_p, GDK_CONTROL_MASK, FALSE,
1503                                   GTK_MOVEMENT_DISPLAY_LINES, -1);
1504
1505   gtk_tree_view_add_move_binding (binding_set, GDK_KEY_n, GDK_CONTROL_MASK, FALSE,
1506                                   GTK_MOVEMENT_DISPLAY_LINES, 1);
1507
1508   gtk_tree_view_add_move_binding (binding_set, GDK_KEY_Home, 0, TRUE,
1509                                   GTK_MOVEMENT_BUFFER_ENDS, -1);
1510   gtk_tree_view_add_move_binding (binding_set, GDK_KEY_KP_Home, 0, TRUE,
1511                                   GTK_MOVEMENT_BUFFER_ENDS, -1);
1512
1513   gtk_tree_view_add_move_binding (binding_set, GDK_KEY_End, 0, TRUE,
1514                                   GTK_MOVEMENT_BUFFER_ENDS, 1);
1515   gtk_tree_view_add_move_binding (binding_set, GDK_KEY_KP_End, 0, TRUE,
1516                                   GTK_MOVEMENT_BUFFER_ENDS, 1);
1517
1518   gtk_tree_view_add_move_binding (binding_set, GDK_KEY_Page_Up, 0, TRUE,
1519                                   GTK_MOVEMENT_PAGES, -1);
1520   gtk_tree_view_add_move_binding (binding_set, GDK_KEY_KP_Page_Up, 0, TRUE,
1521                                   GTK_MOVEMENT_PAGES, -1);
1522
1523   gtk_tree_view_add_move_binding (binding_set, GDK_KEY_Page_Down, 0, TRUE,
1524                                   GTK_MOVEMENT_PAGES, 1);
1525   gtk_tree_view_add_move_binding (binding_set, GDK_KEY_KP_Page_Down, 0, TRUE,
1526                                   GTK_MOVEMENT_PAGES, 1);
1527
1528
1529   gtk_binding_entry_add_signal (binding_set, GDK_KEY_Right, 0, "move-cursor", 2,
1530                                 G_TYPE_ENUM, GTK_MOVEMENT_VISUAL_POSITIONS,
1531                                 G_TYPE_INT, 1);
1532
1533   gtk_binding_entry_add_signal (binding_set, GDK_KEY_Left, 0, "move-cursor", 2,
1534                                 G_TYPE_ENUM, GTK_MOVEMENT_VISUAL_POSITIONS,
1535                                 G_TYPE_INT, -1);
1536
1537   gtk_binding_entry_add_signal (binding_set, GDK_KEY_KP_Right, 0, "move-cursor", 2,
1538                                 G_TYPE_ENUM, GTK_MOVEMENT_VISUAL_POSITIONS,
1539                                 G_TYPE_INT, 1);
1540
1541   gtk_binding_entry_add_signal (binding_set, GDK_KEY_KP_Left, 0, "move-cursor", 2,
1542                                 G_TYPE_ENUM, GTK_MOVEMENT_VISUAL_POSITIONS,
1543                                 G_TYPE_INT, -1);
1544
1545   gtk_binding_entry_add_signal (binding_set, GDK_KEY_Right, GDK_CONTROL_MASK,
1546                                 "move-cursor", 2,
1547                                 G_TYPE_ENUM, GTK_MOVEMENT_VISUAL_POSITIONS,
1548                                 G_TYPE_INT, 1);
1549
1550   gtk_binding_entry_add_signal (binding_set, GDK_KEY_Left, GDK_CONTROL_MASK,
1551                                 "move-cursor", 2,
1552                                 G_TYPE_ENUM, GTK_MOVEMENT_VISUAL_POSITIONS,
1553                                 G_TYPE_INT, -1);
1554
1555   gtk_binding_entry_add_signal (binding_set, GDK_KEY_KP_Right, GDK_CONTROL_MASK,
1556                                 "move-cursor", 2,
1557                                 G_TYPE_ENUM, GTK_MOVEMENT_VISUAL_POSITIONS,
1558                                 G_TYPE_INT, 1);
1559
1560   gtk_binding_entry_add_signal (binding_set, GDK_KEY_KP_Left, GDK_CONTROL_MASK,
1561                                 "move-cursor", 2,
1562                                 G_TYPE_ENUM, GTK_MOVEMENT_VISUAL_POSITIONS,
1563                                 G_TYPE_INT, -1);
1564
1565   gtk_binding_entry_add_signal (binding_set, GDK_KEY_space, GDK_CONTROL_MASK, "toggle-cursor-row", 0);
1566   gtk_binding_entry_add_signal (binding_set, GDK_KEY_KP_Space, GDK_CONTROL_MASK, "toggle-cursor-row", 0);
1567
1568   gtk_binding_entry_add_signal (binding_set, GDK_KEY_a, GDK_CONTROL_MASK, "select-all", 0);
1569   gtk_binding_entry_add_signal (binding_set, GDK_KEY_slash, GDK_CONTROL_MASK, "select-all", 0);
1570
1571   gtk_binding_entry_add_signal (binding_set, GDK_KEY_A, GDK_CONTROL_MASK | GDK_SHIFT_MASK, "unselect-all", 0);
1572   gtk_binding_entry_add_signal (binding_set, GDK_KEY_backslash, GDK_CONTROL_MASK, "unselect-all", 0);
1573
1574   gtk_binding_entry_add_signal (binding_set, GDK_KEY_space, GDK_SHIFT_MASK, "select-cursor-row", 1,
1575                                 G_TYPE_BOOLEAN, TRUE);
1576   gtk_binding_entry_add_signal (binding_set, GDK_KEY_KP_Space, GDK_SHIFT_MASK, "select-cursor-row", 1,
1577                                 G_TYPE_BOOLEAN, TRUE);
1578
1579   gtk_binding_entry_add_signal (binding_set, GDK_KEY_space, 0, "select-cursor-row", 1,
1580                                 G_TYPE_BOOLEAN, TRUE);
1581   gtk_binding_entry_add_signal (binding_set, GDK_KEY_KP_Space, 0, "select-cursor-row", 1,
1582                                 G_TYPE_BOOLEAN, TRUE);
1583   gtk_binding_entry_add_signal (binding_set, GDK_KEY_Return, 0, "select-cursor-row", 1,
1584                                 G_TYPE_BOOLEAN, TRUE);
1585   gtk_binding_entry_add_signal (binding_set, GDK_KEY_ISO_Enter, 0, "select-cursor-row", 1,
1586                                 G_TYPE_BOOLEAN, TRUE);
1587   gtk_binding_entry_add_signal (binding_set, GDK_KEY_KP_Enter, 0, "select-cursor-row", 1,
1588                                 G_TYPE_BOOLEAN, TRUE);
1589
1590   /* expand and collapse rows */
1591   gtk_binding_entry_add_signal (binding_set, GDK_KEY_plus, 0, "expand-collapse-cursor-row", 3,
1592                                 G_TYPE_BOOLEAN, TRUE,
1593                                 G_TYPE_BOOLEAN, TRUE,
1594                                 G_TYPE_BOOLEAN, FALSE);
1595
1596   gtk_binding_entry_add_signal (binding_set, GDK_KEY_asterisk, 0,
1597                                 "expand-collapse-cursor-row", 3,
1598                                 G_TYPE_BOOLEAN, TRUE,
1599                                 G_TYPE_BOOLEAN, TRUE,
1600                                 G_TYPE_BOOLEAN, TRUE);
1601   gtk_binding_entry_add_signal (binding_set, GDK_KEY_KP_Multiply, 0,
1602                                 "expand-collapse-cursor-row", 3,
1603                                 G_TYPE_BOOLEAN, TRUE,
1604                                 G_TYPE_BOOLEAN, TRUE,
1605                                 G_TYPE_BOOLEAN, TRUE);
1606
1607   gtk_binding_entry_add_signal (binding_set, GDK_KEY_slash, 0,
1608                                 "expand-collapse-cursor-row", 3,
1609                                 G_TYPE_BOOLEAN, TRUE,
1610                                 G_TYPE_BOOLEAN, FALSE,
1611                                 G_TYPE_BOOLEAN, FALSE);
1612   gtk_binding_entry_add_signal (binding_set, GDK_KEY_KP_Divide, 0,
1613                                 "expand-collapse-cursor-row", 3,
1614                                 G_TYPE_BOOLEAN, TRUE,
1615                                 G_TYPE_BOOLEAN, FALSE,
1616                                 G_TYPE_BOOLEAN, FALSE);
1617
1618   /* Not doable on US keyboards */
1619   gtk_binding_entry_add_signal (binding_set, GDK_KEY_plus, GDK_SHIFT_MASK, "expand-collapse-cursor-row", 3,
1620                                 G_TYPE_BOOLEAN, TRUE,
1621                                 G_TYPE_BOOLEAN, TRUE,
1622                                 G_TYPE_BOOLEAN, TRUE);
1623   gtk_binding_entry_add_signal (binding_set, GDK_KEY_KP_Add, 0, "expand-collapse-cursor-row", 3,
1624                                 G_TYPE_BOOLEAN, TRUE,
1625                                 G_TYPE_BOOLEAN, TRUE,
1626                                 G_TYPE_BOOLEAN, FALSE);
1627   gtk_binding_entry_add_signal (binding_set, GDK_KEY_KP_Add, GDK_SHIFT_MASK, "expand-collapse-cursor-row", 3,
1628                                 G_TYPE_BOOLEAN, TRUE,
1629                                 G_TYPE_BOOLEAN, TRUE,
1630                                 G_TYPE_BOOLEAN, TRUE);
1631   gtk_binding_entry_add_signal (binding_set, GDK_KEY_KP_Add, GDK_SHIFT_MASK, "expand-collapse-cursor-row", 3,
1632                                 G_TYPE_BOOLEAN, TRUE,
1633                                 G_TYPE_BOOLEAN, TRUE,
1634                                 G_TYPE_BOOLEAN, TRUE);
1635   gtk_binding_entry_add_signal (binding_set, GDK_KEY_Right, GDK_SHIFT_MASK,
1636                                 "expand-collapse-cursor-row", 3,
1637                                 G_TYPE_BOOLEAN, FALSE,
1638                                 G_TYPE_BOOLEAN, TRUE,
1639                                 G_TYPE_BOOLEAN, TRUE);
1640   gtk_binding_entry_add_signal (binding_set, GDK_KEY_KP_Right, GDK_SHIFT_MASK,
1641                                 "expand-collapse-cursor-row", 3,
1642                                 G_TYPE_BOOLEAN, FALSE,
1643                                 G_TYPE_BOOLEAN, TRUE,
1644                                 G_TYPE_BOOLEAN, TRUE);
1645   gtk_binding_entry_add_signal (binding_set, GDK_KEY_Right,
1646                                 GDK_CONTROL_MASK | GDK_SHIFT_MASK,
1647                                 "expand-collapse-cursor-row", 3,
1648                                 G_TYPE_BOOLEAN, FALSE,
1649                                 G_TYPE_BOOLEAN, TRUE,
1650                                 G_TYPE_BOOLEAN, TRUE);
1651   gtk_binding_entry_add_signal (binding_set, GDK_KEY_KP_Right,
1652                                 GDK_CONTROL_MASK | GDK_SHIFT_MASK,
1653                                 "expand-collapse-cursor-row", 3,
1654                                 G_TYPE_BOOLEAN, FALSE,
1655                                 G_TYPE_BOOLEAN, TRUE,
1656                                 G_TYPE_BOOLEAN, TRUE);
1657
1658   gtk_binding_entry_add_signal (binding_set, GDK_KEY_minus, 0, "expand-collapse-cursor-row", 3,
1659                                 G_TYPE_BOOLEAN, TRUE,
1660                                 G_TYPE_BOOLEAN, FALSE,
1661                                 G_TYPE_BOOLEAN, FALSE);
1662   gtk_binding_entry_add_signal (binding_set, GDK_KEY_minus, GDK_SHIFT_MASK, "expand-collapse-cursor-row", 3,
1663                                 G_TYPE_BOOLEAN, TRUE,
1664                                 G_TYPE_BOOLEAN, FALSE,
1665                                 G_TYPE_BOOLEAN, TRUE);
1666   gtk_binding_entry_add_signal (binding_set, GDK_KEY_KP_Subtract, 0, "expand-collapse-cursor-row", 3,
1667                                 G_TYPE_BOOLEAN, TRUE,
1668                                 G_TYPE_BOOLEAN, FALSE,
1669                                 G_TYPE_BOOLEAN, FALSE);
1670   gtk_binding_entry_add_signal (binding_set, GDK_KEY_KP_Subtract, GDK_SHIFT_MASK, "expand-collapse-cursor-row", 3,
1671                                 G_TYPE_BOOLEAN, TRUE,
1672                                 G_TYPE_BOOLEAN, FALSE,
1673                                 G_TYPE_BOOLEAN, TRUE);
1674   gtk_binding_entry_add_signal (binding_set, GDK_KEY_Left, GDK_SHIFT_MASK,
1675                                 "expand-collapse-cursor-row", 3,
1676                                 G_TYPE_BOOLEAN, FALSE,
1677                                 G_TYPE_BOOLEAN, FALSE,
1678                                 G_TYPE_BOOLEAN, TRUE);
1679   gtk_binding_entry_add_signal (binding_set, GDK_KEY_KP_Left, GDK_SHIFT_MASK,
1680                                 "expand-collapse-cursor-row", 3,
1681                                 G_TYPE_BOOLEAN, FALSE,
1682                                 G_TYPE_BOOLEAN, FALSE,
1683                                 G_TYPE_BOOLEAN, TRUE);
1684   gtk_binding_entry_add_signal (binding_set, GDK_KEY_Left,
1685                                 GDK_CONTROL_MASK | GDK_SHIFT_MASK,
1686                                 "expand-collapse-cursor-row", 3,
1687                                 G_TYPE_BOOLEAN, FALSE,
1688                                 G_TYPE_BOOLEAN, FALSE,
1689                                 G_TYPE_BOOLEAN, TRUE);
1690   gtk_binding_entry_add_signal (binding_set, GDK_KEY_KP_Left,
1691                                 GDK_CONTROL_MASK | GDK_SHIFT_MASK,
1692                                 "expand-collapse-cursor-row", 3,
1693                                 G_TYPE_BOOLEAN, FALSE,
1694                                 G_TYPE_BOOLEAN, FALSE,
1695                                 G_TYPE_BOOLEAN, TRUE);
1696
1697   gtk_binding_entry_add_signal (binding_set, GDK_KEY_BackSpace, 0, "select-cursor-parent", 0);
1698   gtk_binding_entry_add_signal (binding_set, GDK_KEY_BackSpace, GDK_CONTROL_MASK, "select-cursor-parent", 0);
1699
1700   gtk_binding_entry_add_signal (binding_set, GDK_KEY_f, GDK_CONTROL_MASK, "start-interactive-search", 0);
1701
1702   gtk_binding_entry_add_signal (binding_set, GDK_KEY_F, GDK_CONTROL_MASK, "start-interactive-search", 0);
1703
1704   g_type_class_add_private (o_class, sizeof (GtkTreeViewPrivate));
1705
1706   gtk_widget_class_set_accessible_type (widget_class, GTK_TYPE_TREE_VIEW_ACCESSIBLE);
1707 }
1708
1709 static void
1710 gtk_tree_view_init (GtkTreeView *tree_view)
1711 {
1712   tree_view->priv = G_TYPE_INSTANCE_GET_PRIVATE (tree_view, GTK_TYPE_TREE_VIEW, GtkTreeViewPrivate);
1713
1714   gtk_widget_set_can_focus (GTK_WIDGET (tree_view), TRUE);
1715   gtk_widget_set_redraw_on_allocate (GTK_WIDGET (tree_view), FALSE);
1716
1717   tree_view->priv->show_expanders = TRUE;
1718   tree_view->priv->draw_keyfocus = TRUE;
1719   tree_view->priv->headers_visible = TRUE;
1720
1721   /* We need some padding */
1722   tree_view->priv->dy = 0;
1723   tree_view->priv->cursor_offset = 0;
1724   tree_view->priv->n_columns = 0;
1725   tree_view->priv->header_height = 1;
1726   tree_view->priv->x_drag = 0;
1727   tree_view->priv->drag_pos = -1;
1728   tree_view->priv->header_has_focus = FALSE;
1729   tree_view->priv->pressed_button = -1;
1730   tree_view->priv->press_start_x = -1;
1731   tree_view->priv->press_start_y = -1;
1732   tree_view->priv->reorderable = FALSE;
1733   tree_view->priv->presize_handler_timer = 0;
1734   tree_view->priv->scroll_sync_timer = 0;
1735   tree_view->priv->fixed_height = -1;
1736   tree_view->priv->fixed_height_mode = FALSE;
1737   tree_view->priv->fixed_height_check = 0;
1738   tree_view->priv->selection = _gtk_tree_selection_new_with_tree_view (tree_view);
1739   tree_view->priv->enable_search = TRUE;
1740   tree_view->priv->search_column = -1;
1741   tree_view->priv->search_position_func = gtk_tree_view_search_position_func;
1742   tree_view->priv->search_equal_func = gtk_tree_view_search_equal_func;
1743   tree_view->priv->search_custom_entry_set = FALSE;
1744   tree_view->priv->typeselect_flush_timeout = 0;
1745   tree_view->priv->init_hadjust_value = TRUE;
1746   tree_view->priv->width = 0;
1747
1748   tree_view->priv->hover_selection = FALSE;
1749   tree_view->priv->hover_expand = FALSE;
1750
1751   tree_view->priv->level_indentation = 0;
1752
1753   tree_view->priv->rubber_banding_enable = FALSE;
1754
1755   tree_view->priv->grid_lines = GTK_TREE_VIEW_GRID_LINES_NONE;
1756   tree_view->priv->tree_lines_enabled = FALSE;
1757
1758   tree_view->priv->tooltip_column = -1;
1759
1760   tree_view->priv->post_validation_flag = FALSE;
1761
1762   tree_view->priv->last_button_x = -1;
1763   tree_view->priv->last_button_y = -1;
1764
1765   tree_view->priv->event_last_x = -10000;
1766   tree_view->priv->event_last_y = -10000;
1767
1768   gtk_tree_view_do_set_vadjustment (tree_view, NULL);
1769   gtk_tree_view_do_set_hadjustment (tree_view, NULL);
1770 }
1771
1772 \f
1773
1774 /* GObject Methods
1775  */
1776
1777 static void
1778 gtk_tree_view_set_property (GObject         *object,
1779                             guint            prop_id,
1780                             const GValue    *value,
1781                             GParamSpec      *pspec)
1782 {
1783   GtkTreeView *tree_view;
1784
1785   tree_view = GTK_TREE_VIEW (object);
1786
1787   switch (prop_id)
1788     {
1789     case PROP_MODEL:
1790       gtk_tree_view_set_model (tree_view, g_value_get_object (value));
1791       break;
1792     case PROP_HADJUSTMENT:
1793       gtk_tree_view_do_set_hadjustment (tree_view, g_value_get_object (value));
1794       break;
1795     case PROP_VADJUSTMENT:
1796       gtk_tree_view_do_set_vadjustment (tree_view, g_value_get_object (value));
1797       break;
1798     case PROP_HSCROLL_POLICY:
1799       tree_view->priv->hscroll_policy = g_value_get_enum (value);
1800       gtk_widget_queue_resize (GTK_WIDGET (tree_view));
1801       break;
1802     case PROP_VSCROLL_POLICY:
1803       tree_view->priv->vscroll_policy = g_value_get_enum (value);
1804       gtk_widget_queue_resize (GTK_WIDGET (tree_view));
1805       break;
1806     case PROP_HEADERS_VISIBLE:
1807       gtk_tree_view_set_headers_visible (tree_view, g_value_get_boolean (value));
1808       break;
1809     case PROP_HEADERS_CLICKABLE:
1810       gtk_tree_view_set_headers_clickable (tree_view, g_value_get_boolean (value));
1811       break;
1812     case PROP_EXPANDER_COLUMN:
1813       gtk_tree_view_set_expander_column (tree_view, g_value_get_object (value));
1814       break;
1815     case PROP_REORDERABLE:
1816       gtk_tree_view_set_reorderable (tree_view, g_value_get_boolean (value));
1817       break;
1818     case PROP_RULES_HINT:
1819       gtk_tree_view_set_rules_hint (tree_view, g_value_get_boolean (value));
1820       break;
1821     case PROP_ENABLE_SEARCH:
1822       gtk_tree_view_set_enable_search (tree_view, g_value_get_boolean (value));
1823       break;
1824     case PROP_SEARCH_COLUMN:
1825       gtk_tree_view_set_search_column (tree_view, g_value_get_int (value));
1826       break;
1827     case PROP_FIXED_HEIGHT_MODE:
1828       gtk_tree_view_set_fixed_height_mode (tree_view, g_value_get_boolean (value));
1829       break;
1830     case PROP_HOVER_SELECTION:
1831       tree_view->priv->hover_selection = g_value_get_boolean (value);
1832       break;
1833     case PROP_HOVER_EXPAND:
1834       tree_view->priv->hover_expand = g_value_get_boolean (value);
1835       break;
1836     case PROP_SHOW_EXPANDERS:
1837       gtk_tree_view_set_show_expanders (tree_view, g_value_get_boolean (value));
1838       break;
1839     case PROP_LEVEL_INDENTATION:
1840       tree_view->priv->level_indentation = g_value_get_int (value);
1841       break;
1842     case PROP_RUBBER_BANDING:
1843       tree_view->priv->rubber_banding_enable = g_value_get_boolean (value);
1844       break;
1845     case PROP_ENABLE_GRID_LINES:
1846       gtk_tree_view_set_grid_lines (tree_view, g_value_get_enum (value));
1847       break;
1848     case PROP_ENABLE_TREE_LINES:
1849       gtk_tree_view_set_enable_tree_lines (tree_view, g_value_get_boolean (value));
1850       break;
1851     case PROP_TOOLTIP_COLUMN:
1852       gtk_tree_view_set_tooltip_column (tree_view, g_value_get_int (value));
1853       break;
1854     default:
1855       G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
1856       break;
1857     }
1858 }
1859
1860 static void
1861 gtk_tree_view_get_property (GObject    *object,
1862                             guint       prop_id,
1863                             GValue     *value,
1864                             GParamSpec *pspec)
1865 {
1866   GtkTreeView *tree_view;
1867
1868   tree_view = GTK_TREE_VIEW (object);
1869
1870   switch (prop_id)
1871     {
1872     case PROP_MODEL:
1873       g_value_set_object (value, tree_view->priv->model);
1874       break;
1875     case PROP_HADJUSTMENT:
1876       g_value_set_object (value, tree_view->priv->hadjustment);
1877       break;
1878     case PROP_VADJUSTMENT:
1879       g_value_set_object (value, tree_view->priv->vadjustment);
1880       break;
1881     case PROP_HSCROLL_POLICY:
1882       g_value_set_enum (value, tree_view->priv->hscroll_policy);
1883       break;
1884     case PROP_VSCROLL_POLICY:
1885       g_value_set_enum (value, tree_view->priv->vscroll_policy);
1886       break;
1887     case PROP_HEADERS_VISIBLE:
1888       g_value_set_boolean (value, gtk_tree_view_get_headers_visible (tree_view));
1889       break;
1890     case PROP_HEADERS_CLICKABLE:
1891       g_value_set_boolean (value, gtk_tree_view_get_headers_clickable (tree_view));
1892       break;
1893     case PROP_EXPANDER_COLUMN:
1894       g_value_set_object (value, tree_view->priv->expander_column);
1895       break;
1896     case PROP_REORDERABLE:
1897       g_value_set_boolean (value, tree_view->priv->reorderable);
1898       break;
1899     case PROP_RULES_HINT:
1900       g_value_set_boolean (value, tree_view->priv->has_rules);
1901       break;
1902     case PROP_ENABLE_SEARCH:
1903       g_value_set_boolean (value, tree_view->priv->enable_search);
1904       break;
1905     case PROP_SEARCH_COLUMN:
1906       g_value_set_int (value, tree_view->priv->search_column);
1907       break;
1908     case PROP_FIXED_HEIGHT_MODE:
1909       g_value_set_boolean (value, tree_view->priv->fixed_height_mode);
1910       break;
1911     case PROP_HOVER_SELECTION:
1912       g_value_set_boolean (value, tree_view->priv->hover_selection);
1913       break;
1914     case PROP_HOVER_EXPAND:
1915       g_value_set_boolean (value, tree_view->priv->hover_expand);
1916       break;
1917     case PROP_SHOW_EXPANDERS:
1918       g_value_set_boolean (value, tree_view->priv->show_expanders);
1919       break;
1920     case PROP_LEVEL_INDENTATION:
1921       g_value_set_int (value, tree_view->priv->level_indentation);
1922       break;
1923     case PROP_RUBBER_BANDING:
1924       g_value_set_boolean (value, tree_view->priv->rubber_banding_enable);
1925       break;
1926     case PROP_ENABLE_GRID_LINES:
1927       g_value_set_enum (value, tree_view->priv->grid_lines);
1928       break;
1929     case PROP_ENABLE_TREE_LINES:
1930       g_value_set_boolean (value, tree_view->priv->tree_lines_enabled);
1931       break;
1932     case PROP_TOOLTIP_COLUMN:
1933       g_value_set_int (value, tree_view->priv->tooltip_column);
1934       break;
1935     default:
1936       G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
1937       break;
1938     }
1939 }
1940
1941 static void
1942 gtk_tree_view_finalize (GObject *object)
1943 {
1944   G_OBJECT_CLASS (gtk_tree_view_parent_class)->finalize (object);
1945 }
1946
1947
1948 static GtkBuildableIface *parent_buildable_iface;
1949
1950 static void
1951 gtk_tree_view_buildable_init (GtkBuildableIface *iface)
1952 {
1953   parent_buildable_iface = g_type_interface_peek_parent (iface);
1954   iface->add_child = gtk_tree_view_buildable_add_child;
1955   iface->get_internal_child = gtk_tree_view_buildable_get_internal_child;
1956 }
1957
1958 static void
1959 gtk_tree_view_buildable_add_child (GtkBuildable *tree_view,
1960                                    GtkBuilder  *builder,
1961                                    GObject     *child,
1962                                    const gchar *type)
1963 {
1964   gtk_tree_view_append_column (GTK_TREE_VIEW (tree_view), GTK_TREE_VIEW_COLUMN (child));
1965 }
1966
1967 static GObject *
1968 gtk_tree_view_buildable_get_internal_child (GtkBuildable      *buildable,
1969                                             GtkBuilder        *builder,
1970                                             const gchar       *childname)
1971 {
1972     if (strcmp (childname, "selection") == 0)
1973       return G_OBJECT (GTK_TREE_VIEW (buildable)->priv->selection);
1974
1975     return parent_buildable_iface->get_internal_child (buildable,
1976                                                        builder,
1977                                                        childname);
1978 }
1979
1980 /* GtkWidget Methods
1981  */
1982
1983 static void
1984 gtk_tree_view_free_rbtree (GtkTreeView *tree_view)
1985 {
1986   _gtk_rbtree_free (tree_view->priv->tree);
1987
1988   tree_view->priv->tree = NULL;
1989   tree_view->priv->button_pressed_node = NULL;
1990   tree_view->priv->button_pressed_tree = NULL;
1991   tree_view->priv->prelight_tree = NULL;
1992   tree_view->priv->prelight_node = NULL;
1993   tree_view->priv->expanded_collapsed_node = NULL;
1994   tree_view->priv->expanded_collapsed_tree = NULL;
1995 }
1996
1997 static void
1998 gtk_tree_view_destroy (GtkWidget *widget)
1999 {
2000   GtkTreeView *tree_view = GTK_TREE_VIEW (widget);
2001   GList *list;
2002
2003   gtk_tree_view_stop_editing (tree_view, TRUE);
2004
2005   if (tree_view->priv->columns != NULL)
2006     {
2007       list = tree_view->priv->columns;
2008       while (list)
2009         {
2010           GtkTreeViewColumn *column;
2011           column = GTK_TREE_VIEW_COLUMN (list->data);
2012           list = list->next;
2013           gtk_tree_view_remove_column (tree_view, column);
2014         }
2015       tree_view->priv->columns = NULL;
2016     }
2017
2018   if (tree_view->priv->tree != NULL)
2019     {
2020       gtk_tree_view_unref_and_check_selection_tree (tree_view, tree_view->priv->tree);
2021
2022       gtk_tree_view_free_rbtree (tree_view);
2023     }
2024
2025   if (tree_view->priv->selection != NULL)
2026     {
2027       _gtk_tree_selection_set_tree_view (tree_view->priv->selection, NULL);
2028       g_object_unref (tree_view->priv->selection);
2029       tree_view->priv->selection = NULL;
2030     }
2031
2032   if (tree_view->priv->scroll_to_path != NULL)
2033     {
2034       gtk_tree_row_reference_free (tree_view->priv->scroll_to_path);
2035       tree_view->priv->scroll_to_path = NULL;
2036     }
2037
2038   if (tree_view->priv->drag_dest_row != NULL)
2039     {
2040       gtk_tree_row_reference_free (tree_view->priv->drag_dest_row);
2041       tree_view->priv->drag_dest_row = NULL;
2042     }
2043
2044   if (tree_view->priv->top_row != NULL)
2045     {
2046       gtk_tree_row_reference_free (tree_view->priv->top_row);
2047       tree_view->priv->top_row = NULL;
2048     }
2049
2050   if (tree_view->priv->column_drop_func_data &&
2051       tree_view->priv->column_drop_func_data_destroy)
2052     {
2053       tree_view->priv->column_drop_func_data_destroy (tree_view->priv->column_drop_func_data);
2054       tree_view->priv->column_drop_func_data = NULL;
2055     }
2056
2057   if (tree_view->priv->destroy_count_destroy &&
2058       tree_view->priv->destroy_count_data)
2059     {
2060       tree_view->priv->destroy_count_destroy (tree_view->priv->destroy_count_data);
2061       tree_view->priv->destroy_count_data = NULL;
2062     }
2063
2064   gtk_tree_row_reference_free (tree_view->priv->anchor);
2065   tree_view->priv->anchor = NULL;
2066
2067   /* destroy interactive search dialog */
2068   if (tree_view->priv->search_window)
2069     {
2070       gtk_widget_destroy (tree_view->priv->search_window);
2071       tree_view->priv->search_window = NULL;
2072       tree_view->priv->search_entry = NULL;
2073       if (tree_view->priv->typeselect_flush_timeout)
2074         {
2075           g_source_remove (tree_view->priv->typeselect_flush_timeout);
2076           tree_view->priv->typeselect_flush_timeout = 0;
2077         }
2078     }
2079
2080   if (tree_view->priv->search_destroy && tree_view->priv->search_user_data)
2081     {
2082       tree_view->priv->search_destroy (tree_view->priv->search_user_data);
2083       tree_view->priv->search_user_data = NULL;
2084     }
2085
2086   if (tree_view->priv->search_position_destroy && tree_view->priv->search_position_user_data)
2087     {
2088       tree_view->priv->search_position_destroy (tree_view->priv->search_position_user_data);
2089       tree_view->priv->search_position_user_data = NULL;
2090     }
2091
2092   if (tree_view->priv->row_separator_destroy && tree_view->priv->row_separator_data)
2093     {
2094       tree_view->priv->row_separator_destroy (tree_view->priv->row_separator_data);
2095       tree_view->priv->row_separator_data = NULL;
2096     }
2097
2098   gtk_tree_view_set_model (tree_view, NULL);
2099
2100   if (tree_view->priv->hadjustment)
2101     {
2102       g_object_unref (tree_view->priv->hadjustment);
2103       tree_view->priv->hadjustment = NULL;
2104     }
2105   if (tree_view->priv->vadjustment)
2106     {
2107       g_object_unref (tree_view->priv->vadjustment);
2108       tree_view->priv->vadjustment = NULL;
2109     }
2110
2111   GTK_WIDGET_CLASS (gtk_tree_view_parent_class)->destroy (widget);
2112 }
2113
2114 /* GtkWidget::map helper */
2115 static void
2116 gtk_tree_view_map_buttons (GtkTreeView *tree_view)
2117 {
2118   GList *list;
2119
2120   g_return_if_fail (gtk_widget_get_mapped (GTK_WIDGET (tree_view)));
2121
2122   if (tree_view->priv->headers_visible)
2123     {
2124       GtkTreeViewColumn *column;
2125       GtkWidget         *button;
2126       GdkWindow         *window;
2127
2128       for (list = tree_view->priv->columns; list; list = list->next)
2129         {
2130           column = list->data;
2131           button = gtk_tree_view_column_get_button (column);
2132
2133           if (gtk_tree_view_column_get_visible (column) && button)
2134             gtk_widget_show_now (button);
2135
2136           if (gtk_widget_get_visible (button) &&
2137               !gtk_widget_get_mapped (button))
2138             gtk_widget_map (button);
2139         }
2140       for (list = tree_view->priv->columns; list; list = list->next)
2141         {
2142           column = list->data;
2143           if (gtk_tree_view_column_get_visible (column) == FALSE)
2144             continue;
2145
2146           window = _gtk_tree_view_column_get_window (column);
2147           if (gtk_tree_view_column_get_resizable (column))
2148             {
2149               gdk_window_raise (window);
2150               gdk_window_show (window);
2151             }
2152           else
2153             gdk_window_hide (window);
2154         }
2155       gdk_window_show (tree_view->priv->header_window);
2156     }
2157 }
2158
2159 static void
2160 gtk_tree_view_map (GtkWidget *widget)
2161 {
2162   GtkTreeView *tree_view = GTK_TREE_VIEW (widget);
2163   GList *tmp_list;
2164
2165   gtk_widget_set_mapped (widget, TRUE);
2166
2167   tmp_list = tree_view->priv->children;
2168   while (tmp_list)
2169     {
2170       GtkTreeViewChild *child = tmp_list->data;
2171       tmp_list = tmp_list->next;
2172
2173       if (gtk_widget_get_visible (child->widget))
2174         {
2175           if (!gtk_widget_get_mapped (child->widget))
2176             gtk_widget_map (child->widget);
2177         }
2178     }
2179   gdk_window_show (tree_view->priv->bin_window);
2180
2181   gtk_tree_view_map_buttons (tree_view);
2182
2183   gdk_window_show (gtk_widget_get_window (widget));
2184 }
2185
2186 static void
2187 gtk_tree_view_ensure_background (GtkTreeView *tree_view)
2188 {
2189   GtkStyleContext *context;
2190
2191   context = gtk_widget_get_style_context (GTK_WIDGET (tree_view));
2192
2193   gtk_style_context_save (context);
2194   gtk_style_context_add_class (context, GTK_STYLE_CLASS_VIEW);
2195   gtk_style_context_set_background (context, tree_view->priv->bin_window);
2196   gtk_style_context_restore (context);
2197
2198   gtk_style_context_set_background (context, tree_view->priv->header_window);
2199 }
2200
2201 static void
2202 gtk_tree_view_realize (GtkWidget *widget)
2203 {
2204   GtkAllocation allocation;
2205   GtkTreeView *tree_view = GTK_TREE_VIEW (widget);
2206   GdkWindow *window;
2207   GdkWindowAttr attributes;
2208   GList *tmp_list;
2209   gint attributes_mask;
2210
2211   gtk_widget_set_realized (widget, TRUE);
2212
2213   gtk_widget_get_allocation (widget, &allocation);
2214
2215   /* Make the main, clipping window */
2216   attributes.window_type = GDK_WINDOW_CHILD;
2217   attributes.x = allocation.x;
2218   attributes.y = allocation.y;
2219   attributes.width = allocation.width;
2220   attributes.height = allocation.height;
2221   attributes.wclass = GDK_INPUT_OUTPUT;
2222   attributes.visual = gtk_widget_get_visual (widget);
2223   attributes.event_mask = GDK_VISIBILITY_NOTIFY_MASK;
2224
2225   attributes_mask = GDK_WA_X | GDK_WA_Y | GDK_WA_VISUAL;
2226
2227   window = gdk_window_new (gtk_widget_get_parent_window (widget),
2228                            &attributes, attributes_mask);
2229   gtk_widget_set_window (widget, window);
2230   gdk_window_set_user_data (window, widget);
2231
2232   gtk_widget_get_allocation (widget, &allocation);
2233
2234   /* Make the window for the tree */
2235   attributes.x = 0;
2236   attributes.y = gtk_tree_view_get_effective_header_height (tree_view);
2237   attributes.width = MAX (tree_view->priv->width, allocation.width);
2238   attributes.height = allocation.height;
2239   attributes.event_mask = (GDK_EXPOSURE_MASK |
2240                            GDK_SCROLL_MASK |
2241                            GDK_POINTER_MOTION_MASK |
2242                            GDK_ENTER_NOTIFY_MASK |
2243                            GDK_LEAVE_NOTIFY_MASK |
2244                            GDK_BUTTON_PRESS_MASK |
2245                            GDK_BUTTON_RELEASE_MASK |
2246                            gtk_widget_get_events (widget));
2247
2248   tree_view->priv->bin_window = gdk_window_new (window,
2249                                                 &attributes, attributes_mask);
2250   gdk_window_set_user_data (tree_view->priv->bin_window, widget);
2251
2252   gtk_widget_get_allocation (widget, &allocation);
2253
2254   /* Make the column header window */
2255   attributes.x = 0;
2256   attributes.y = 0;
2257   attributes.width = MAX (tree_view->priv->width, allocation.width);
2258   attributes.height = tree_view->priv->header_height;
2259   attributes.event_mask = (GDK_EXPOSURE_MASK |
2260                            GDK_SCROLL_MASK |
2261                            GDK_ENTER_NOTIFY_MASK |
2262                            GDK_LEAVE_NOTIFY_MASK |
2263                            GDK_BUTTON_PRESS_MASK |
2264                            GDK_BUTTON_RELEASE_MASK |
2265                            GDK_KEY_PRESS_MASK |
2266                            GDK_KEY_RELEASE_MASK |
2267                            gtk_widget_get_events (widget));
2268
2269   tree_view->priv->header_window = gdk_window_new (window,
2270                                                    &attributes, attributes_mask);
2271   gdk_window_set_user_data (tree_view->priv->header_window, widget);
2272
2273   gtk_tree_view_ensure_background (tree_view);
2274
2275   tmp_list = tree_view->priv->children;
2276   while (tmp_list)
2277     {
2278       GtkTreeViewChild *child = tmp_list->data;
2279       tmp_list = tmp_list->next;
2280
2281       gtk_widget_set_parent_window (child->widget, tree_view->priv->bin_window);
2282     }
2283
2284   for (tmp_list = tree_view->priv->columns; tmp_list; tmp_list = tmp_list->next)
2285     _gtk_tree_view_column_realize_button (GTK_TREE_VIEW_COLUMN (tmp_list->data));
2286
2287   /* Need to call those here, since they create GCs */
2288   gtk_tree_view_set_grid_lines (tree_view, tree_view->priv->grid_lines);
2289   gtk_tree_view_set_enable_tree_lines (tree_view, tree_view->priv->tree_lines_enabled);
2290
2291   install_presize_handler (tree_view);
2292 }
2293
2294 static void
2295 gtk_tree_view_unrealize (GtkWidget *widget)
2296 {
2297   GtkTreeView *tree_view = GTK_TREE_VIEW (widget);
2298   GtkTreeViewPrivate *priv = tree_view->priv;
2299   GtkStyleContext *context;
2300   GList *list;
2301
2302   if (priv->scroll_timeout != 0)
2303     {
2304       g_source_remove (priv->scroll_timeout);
2305       priv->scroll_timeout = 0;
2306     }
2307
2308   if (priv->auto_expand_timeout != 0)
2309     {
2310       g_source_remove (priv->auto_expand_timeout);
2311       priv->auto_expand_timeout = 0;
2312     }
2313
2314   if (priv->open_dest_timeout != 0)
2315     {
2316       g_source_remove (priv->open_dest_timeout);
2317       priv->open_dest_timeout = 0;
2318     }
2319
2320   context = gtk_widget_get_style_context (widget);
2321   gtk_style_context_cancel_animations (context, NULL);
2322
2323   if (priv->presize_handler_timer != 0)
2324     {
2325       g_source_remove (priv->presize_handler_timer);
2326       priv->presize_handler_timer = 0;
2327     }
2328
2329   if (priv->validate_rows_timer != 0)
2330     {
2331       g_source_remove (priv->validate_rows_timer);
2332       priv->validate_rows_timer = 0;
2333     }
2334
2335   if (priv->scroll_sync_timer != 0)
2336     {
2337       g_source_remove (priv->scroll_sync_timer);
2338       priv->scroll_sync_timer = 0;
2339     }
2340
2341   if (priv->typeselect_flush_timeout)
2342     {
2343       g_source_remove (priv->typeselect_flush_timeout);
2344       priv->typeselect_flush_timeout = 0;
2345     }
2346
2347   for (list = priv->columns; list; list = list->next)
2348     _gtk_tree_view_column_unrealize_button (GTK_TREE_VIEW_COLUMN (list->data));
2349
2350   gdk_window_set_user_data (priv->bin_window, NULL);
2351   gdk_window_destroy (priv->bin_window);
2352   priv->bin_window = NULL;
2353
2354   gdk_window_set_user_data (priv->header_window, NULL);
2355   gdk_window_destroy (priv->header_window);
2356   priv->header_window = NULL;
2357
2358   if (priv->drag_window)
2359     {
2360       gdk_window_set_user_data (priv->drag_window, NULL);
2361       gdk_window_destroy (priv->drag_window);
2362       priv->drag_window = NULL;
2363     }
2364
2365   if (priv->drag_highlight_window)
2366     {
2367       gdk_window_set_user_data (priv->drag_highlight_window, NULL);
2368       gdk_window_destroy (priv->drag_highlight_window);
2369       priv->drag_highlight_window = NULL;
2370     }
2371
2372   GTK_WIDGET_CLASS (gtk_tree_view_parent_class)->unrealize (widget);
2373 }
2374
2375 /* GtkWidget::size_request helper */
2376 static void
2377 gtk_tree_view_size_request_columns (GtkTreeView *tree_view)
2378 {
2379   GList *list;
2380
2381   tree_view->priv->header_height = 0;
2382
2383   for (list = tree_view->priv->columns; list; list = list->next)
2384     {
2385       GtkRequisition     requisition;
2386       GtkTreeViewColumn *column = list->data;
2387       GtkWidget         *button = gtk_tree_view_column_get_button (column);
2388
2389       if (button == NULL)
2390         continue;
2391
2392       gtk_widget_get_preferred_size (button, &requisition, NULL);
2393       tree_view->priv->header_height = MAX (tree_view->priv->header_height, requisition.height);
2394     }
2395 }
2396
2397
2398 /* Called only by ::size_request */
2399 static void
2400 gtk_tree_view_update_size (GtkTreeView *tree_view)
2401 {
2402   GList *list;
2403   GtkTreeViewColumn *column;
2404   gint i;
2405
2406   if (tree_view->priv->model == NULL)
2407     {
2408       tree_view->priv->width = 0;
2409       tree_view->priv->prev_width = 0;
2410       tree_view->priv->height = 0;
2411       return;
2412     }
2413
2414   tree_view->priv->prev_width = tree_view->priv->width;
2415   tree_view->priv->width = 0;
2416
2417   /* keep this in sync with size_allocate below */
2418   for (list = tree_view->priv->columns, i = 0; list; list = list->next, i++)
2419     {
2420       column = list->data;
2421       if (!gtk_tree_view_column_get_visible (column))
2422         continue;
2423
2424       tree_view->priv->width += _gtk_tree_view_column_request_width (column);
2425     }
2426
2427   if (tree_view->priv->tree == NULL)
2428     tree_view->priv->height = 0;
2429   else
2430     tree_view->priv->height = tree_view->priv->tree->root->offset;
2431 }
2432
2433 static void
2434 gtk_tree_view_size_request (GtkWidget      *widget,
2435                             GtkRequisition *requisition,
2436                             gboolean        may_validate)
2437 {
2438   GtkTreeView *tree_view = GTK_TREE_VIEW (widget);
2439
2440   if (may_validate)
2441     {
2442       /* we validate some rows initially just to make sure we have some size.
2443        * In practice, with a lot of static lists, this should get a good width.
2444        */
2445       do_validate_rows (tree_view, FALSE);
2446     }
2447
2448   gtk_tree_view_size_request_columns (tree_view);
2449   gtk_tree_view_update_size (GTK_TREE_VIEW (widget));
2450
2451   requisition->width = tree_view->priv->width;
2452   requisition->height = tree_view->priv->height + gtk_tree_view_get_effective_header_height (tree_view);
2453 }
2454
2455 static void
2456 gtk_tree_view_get_preferred_width (GtkWidget *widget,
2457                                    gint      *minimum,
2458                                    gint      *natural)
2459 {
2460   GtkRequisition requisition;
2461
2462   gtk_tree_view_size_request (widget, &requisition, TRUE);
2463
2464   *minimum = *natural = requisition.width;
2465 }
2466
2467 static void
2468 gtk_tree_view_get_preferred_height (GtkWidget *widget,
2469                                     gint      *minimum,
2470                                     gint      *natural)
2471 {
2472   GtkRequisition requisition;
2473
2474   gtk_tree_view_size_request (widget, &requisition, TRUE);
2475
2476   *minimum = *natural = requisition.height;
2477 }
2478
2479 static int
2480 gtk_tree_view_calculate_width_before_expander (GtkTreeView *tree_view)
2481 {
2482   int width = 0;
2483   GList *list;
2484   gboolean rtl;
2485
2486   rtl = (gtk_widget_get_direction (GTK_WIDGET (tree_view)) == GTK_TEXT_DIR_RTL);
2487   for (list = (rtl ? g_list_last (tree_view->priv->columns) : g_list_first (tree_view->priv->columns));
2488        list->data != tree_view->priv->expander_column;
2489        list = (rtl ? list->prev : list->next))
2490     {
2491       GtkTreeViewColumn *column = list->data;
2492
2493       width += gtk_tree_view_column_get_width (column);
2494     }
2495
2496   return width;
2497 }
2498
2499 /* GtkWidget::size_allocate helper */
2500 static void
2501 gtk_tree_view_size_allocate_columns (GtkWidget *widget,
2502                                      gboolean  *width_changed)
2503 {
2504   GtkTreeView *tree_view;
2505   GList *list, *first_column, *last_column;
2506   GtkTreeViewColumn *column;
2507   GtkAllocation widget_allocation;
2508   gint width = 0;
2509   gint extra, extra_per_column, extra_for_last;
2510   gint full_requested_width = 0;
2511   gint number_of_expand_columns = 0;
2512   gboolean rtl;
2513   gboolean update_expand;
2514
2515   tree_view = GTK_TREE_VIEW (widget);
2516
2517   for (last_column = g_list_last (tree_view->priv->columns);
2518        last_column &&
2519        !(gtk_tree_view_column_get_visible (GTK_TREE_VIEW_COLUMN (last_column->data)));
2520        last_column = last_column->prev)
2521     ;
2522   if (last_column == NULL)
2523     return;
2524
2525   for (first_column = g_list_first (tree_view->priv->columns);
2526        first_column &&
2527        !(gtk_tree_view_column_get_visible (GTK_TREE_VIEW_COLUMN (first_column->data)));
2528        first_column = first_column->next)
2529     ;
2530
2531   rtl = (gtk_widget_get_direction (widget) == GTK_TEXT_DIR_RTL);
2532
2533   /* find out how many extra space and expandable columns we have */
2534   for (list = tree_view->priv->columns; list != last_column->next; list = list->next)
2535     {
2536       column = (GtkTreeViewColumn *)list->data;
2537
2538       if (!gtk_tree_view_column_get_visible (column))
2539         continue;
2540
2541       full_requested_width += _gtk_tree_view_column_request_width (column);
2542
2543       if (gtk_tree_view_column_get_expand (column))
2544         number_of_expand_columns++;
2545     }
2546
2547   /* Only update the expand value if the width of the widget has changed,
2548    * or the number of expand columns has changed, or if there are no expand
2549    * columns, or if we didn't have an size-allocation yet after the
2550    * last validated node.
2551    */
2552   update_expand = (width_changed && *width_changed == TRUE)
2553       || number_of_expand_columns != tree_view->priv->last_number_of_expand_columns
2554       || number_of_expand_columns == 0
2555       || tree_view->priv->post_validation_flag == TRUE;
2556
2557   tree_view->priv->post_validation_flag = FALSE;
2558
2559   gtk_widget_get_allocation (widget, &widget_allocation);
2560   if (!update_expand)
2561     {
2562       extra = tree_view->priv->last_extra_space;
2563       extra_for_last = MAX (widget_allocation.width - full_requested_width - extra, 0);
2564     }
2565   else
2566     {
2567       extra = MAX (widget_allocation.width - full_requested_width, 0);
2568       extra_for_last = 0;
2569
2570       tree_view->priv->last_extra_space = extra;
2571     }
2572
2573   if (number_of_expand_columns > 0)
2574     extra_per_column = extra/number_of_expand_columns;
2575   else
2576     extra_per_column = 0;
2577
2578   if (update_expand)
2579     {
2580       tree_view->priv->last_extra_space_per_column = extra_per_column;
2581       tree_view->priv->last_number_of_expand_columns = number_of_expand_columns;
2582     }
2583
2584   for (list = (rtl ? last_column : first_column);
2585        list != (rtl ? first_column->prev : last_column->next);
2586        list = (rtl ? list->prev : list->next))
2587     {
2588       gint column_width;
2589
2590       column = list->data;
2591
2592       if (!gtk_tree_view_column_get_visible (column))
2593         continue;
2594
2595       /* We need to handle the dragged button specially.
2596        */
2597       if (column == tree_view->priv->drag_column)
2598         {
2599           GtkAllocation drag_allocation;
2600           GtkWidget    *button;
2601
2602           button = gtk_tree_view_column_get_button (tree_view->priv->drag_column);
2603
2604           drag_allocation.x = 0;
2605           drag_allocation.y = 0;
2606           drag_allocation.width = gdk_window_get_width (tree_view->priv->drag_window);
2607           drag_allocation.height = gdk_window_get_height (tree_view->priv->drag_window);
2608           gtk_widget_size_allocate (button, &drag_allocation);
2609           width += drag_allocation.width;
2610           continue;
2611         }
2612
2613       column_width = _gtk_tree_view_column_request_width (column);
2614
2615       if (gtk_tree_view_column_get_expand (column))
2616         {
2617           if (number_of_expand_columns == 1)
2618             {
2619               /* We add the remander to the last column as
2620                * */
2621               column_width += extra;
2622             }
2623           else
2624             {
2625               column_width += extra_per_column;
2626               extra -= extra_per_column;
2627               number_of_expand_columns --;
2628             }
2629         }
2630       else if (number_of_expand_columns == 0 &&
2631                list == last_column)
2632         {
2633           column_width += extra;
2634         }
2635
2636       /* In addition to expand, the last column can get even more
2637        * extra space so all available space is filled up.
2638        */
2639       if (extra_for_last > 0 && list == last_column)
2640         column_width += extra_for_last;
2641
2642       _gtk_tree_view_column_allocate (column, width, column_width);
2643
2644       width += column_width;
2645     }
2646
2647   /* We change the width here.  The user might have been resizing columns,
2648    * which changes the total width of the tree view.  This is of
2649    * importance for getting the horizontal scroll bar right.
2650    */
2651   if (tree_view->priv->width != width)
2652     {
2653       tree_view->priv->width = width;
2654       if (width_changed)
2655         *width_changed = TRUE;
2656     }
2657 }
2658
2659
2660 static void
2661 gtk_tree_view_size_allocate (GtkWidget     *widget,
2662                              GtkAllocation *allocation)
2663 {
2664   GtkAllocation widget_allocation;
2665   GtkTreeView *tree_view = GTK_TREE_VIEW (widget);
2666   GList *tmp_list;
2667   gboolean width_changed = FALSE;
2668   gint old_width;
2669
2670   gtk_widget_get_allocation (widget, &widget_allocation);
2671   old_width = widget_allocation.width;
2672   if (allocation->width != widget_allocation.width)
2673     width_changed = TRUE;
2674
2675   gtk_widget_set_allocation (widget, allocation);
2676
2677   tmp_list = tree_view->priv->children;
2678
2679   while (tmp_list)
2680     {
2681       GtkAllocation allocation;
2682
2683       GtkTreeViewChild *child = tmp_list->data;
2684       tmp_list = tmp_list->next;
2685
2686       /* totally ignore our child's requisition */
2687       allocation.x = child->x;
2688       allocation.y = child->y;
2689       allocation.width = child->width;
2690       allocation.height = child->height;
2691       gtk_widget_size_allocate (child->widget, &allocation);
2692     }
2693
2694   /* We size-allocate the columns first because the width of the
2695    * tree view (used in updating the adjustments below) might change.
2696    */
2697   gtk_tree_view_size_allocate_columns (widget, &width_changed);
2698
2699   g_object_freeze_notify (G_OBJECT (tree_view->priv->hadjustment));
2700   gtk_adjustment_set_page_size (tree_view->priv->hadjustment,
2701                                 allocation->width);
2702   gtk_adjustment_set_page_increment (tree_view->priv->hadjustment,
2703                                      allocation->width * 0.9);
2704   gtk_adjustment_set_step_increment (tree_view->priv->hadjustment,
2705                                      allocation->width * 0.1);
2706   gtk_adjustment_set_lower (tree_view->priv->hadjustment, 0);
2707   gtk_adjustment_set_upper (tree_view->priv->hadjustment,
2708                             MAX (gtk_adjustment_get_page_size (tree_view->priv->hadjustment),
2709                                  tree_view->priv->width));
2710   g_object_thaw_notify (G_OBJECT (tree_view->priv->hadjustment));
2711
2712   if (gtk_widget_get_direction(widget) == GTK_TEXT_DIR_RTL)
2713     {
2714       if (allocation->width < tree_view->priv->width)
2715         {
2716           if (tree_view->priv->init_hadjust_value)
2717             {
2718               gtk_adjustment_set_value (tree_view->priv->hadjustment,
2719                                         MAX (tree_view->priv->width -
2720                                              allocation->width, 0));
2721               tree_view->priv->init_hadjust_value = FALSE;
2722             }
2723           else if (allocation->width != old_width)
2724             {
2725               gtk_adjustment_set_value (tree_view->priv->hadjustment,
2726                                         CLAMP (gtk_adjustment_get_value (tree_view->priv->hadjustment) - allocation->width + old_width,
2727                                                0,
2728                                                tree_view->priv->width - allocation->width));
2729             }
2730           else
2731             gtk_adjustment_set_value (tree_view->priv->hadjustment,
2732                                       CLAMP (tree_view->priv->width - (tree_view->priv->prev_width - gtk_adjustment_get_value (tree_view->priv->hadjustment)),
2733                                              0,
2734                                              tree_view->priv->width - allocation->width));
2735         }
2736       else
2737         {
2738           gtk_adjustment_set_value (tree_view->priv->hadjustment, 0);
2739           tree_view->priv->init_hadjust_value = TRUE;
2740         }
2741     }
2742   else
2743     if (gtk_adjustment_get_value (tree_view->priv->hadjustment) + allocation->width > tree_view->priv->width)
2744       gtk_adjustment_set_value (tree_view->priv->hadjustment,
2745                                 MAX (tree_view->priv->width -
2746                                      allocation->width, 0));
2747
2748   g_object_freeze_notify (G_OBJECT (tree_view->priv->vadjustment));
2749   gtk_adjustment_set_page_size (tree_view->priv->vadjustment,
2750                                 allocation->height -
2751                                 gtk_tree_view_get_effective_header_height (tree_view));
2752   gtk_adjustment_set_step_increment (tree_view->priv->vadjustment,
2753                                      gtk_adjustment_get_page_size (tree_view->priv->vadjustment) * 0.1);
2754   gtk_adjustment_set_page_increment (tree_view->priv->vadjustment,
2755                                      gtk_adjustment_get_page_size (tree_view->priv->vadjustment) * 0.9);
2756   gtk_adjustment_set_lower (tree_view->priv->vadjustment, 0);
2757   gtk_adjustment_set_upper (tree_view->priv->vadjustment,
2758                             MAX (gtk_adjustment_get_page_size (tree_view->priv->vadjustment),
2759                                  tree_view->priv->height));
2760   g_object_thaw_notify (G_OBJECT (tree_view->priv->vadjustment));
2761
2762   /* now the adjustments and window sizes are in sync, we can sync toprow/dy again */
2763   if (tree_view->priv->height <= gtk_adjustment_get_page_size (tree_view->priv->vadjustment))
2764     gtk_adjustment_set_value (GTK_ADJUSTMENT (tree_view->priv->vadjustment), 0);
2765   else if (gtk_adjustment_get_value (tree_view->priv->vadjustment) + gtk_adjustment_get_page_size (tree_view->priv->vadjustment) > tree_view->priv->height)
2766     gtk_adjustment_set_value (GTK_ADJUSTMENT (tree_view->priv->vadjustment),
2767                               tree_view->priv->height - gtk_adjustment_get_page_size (tree_view->priv->vadjustment));
2768   else if (gtk_tree_row_reference_valid (tree_view->priv->top_row))
2769     gtk_tree_view_top_row_to_dy (tree_view);
2770   else
2771     gtk_tree_view_dy_to_top_row (tree_view);
2772
2773   if (gtk_widget_get_realized (widget))
2774     {
2775       gdk_window_move_resize (gtk_widget_get_window (widget),
2776                               allocation->x, allocation->y,
2777                               allocation->width, allocation->height);
2778       gdk_window_move_resize (tree_view->priv->header_window,
2779                               - (gint) gtk_adjustment_get_value (tree_view->priv->hadjustment),
2780                               0,
2781                               MAX (tree_view->priv->width, allocation->width),
2782                               tree_view->priv->header_height);
2783       gdk_window_move_resize (tree_view->priv->bin_window,
2784                               - (gint) gtk_adjustment_get_value (tree_view->priv->hadjustment),
2785                               gtk_tree_view_get_effective_header_height (tree_view),
2786                               MAX (tree_view->priv->width, allocation->width),
2787                               allocation->height - gtk_tree_view_get_effective_header_height (tree_view));
2788
2789       if (tree_view->priv->tree == NULL)
2790         invalidate_empty_focus (tree_view);
2791
2792       if (width_changed && tree_view->priv->expander_column)
2793         {
2794           /* Might seem awkward, but is the best heuristic I could come up
2795            * with.  Only if the width of the columns before the expander
2796            * changes, we will update the prelight status.  It is this
2797            * width that makes the expander move vertically.  Always updating
2798            * prelight status causes trouble with hover selections.
2799            */
2800           gint width_before_expander;
2801
2802           width_before_expander = gtk_tree_view_calculate_width_before_expander (tree_view);
2803
2804           if (tree_view->priv->prev_width_before_expander
2805               != width_before_expander)
2806               update_prelight (tree_view,
2807                                tree_view->priv->event_last_x,
2808                                tree_view->priv->event_last_y);
2809
2810           tree_view->priv->prev_width_before_expander = width_before_expander;
2811         }
2812     }
2813 }
2814
2815 /* Grabs the focus and unsets the GTK_TREE_VIEW_DRAW_KEYFOCUS flag */
2816 static void
2817 grab_focus_and_unset_draw_keyfocus (GtkTreeView *tree_view)
2818 {
2819   GtkWidget *widget = GTK_WIDGET (tree_view);
2820
2821   if (gtk_widget_get_can_focus (widget) && !gtk_widget_has_focus (widget))
2822     gtk_widget_grab_focus (widget);
2823   tree_view->priv->draw_keyfocus = 0;
2824 }
2825
2826 static inline gboolean
2827 row_is_separator (GtkTreeView *tree_view,
2828                   GtkTreeIter *iter,
2829                   GtkTreePath *path)
2830 {
2831   gboolean is_separator = FALSE;
2832
2833   if (tree_view->priv->row_separator_func)
2834     {
2835       GtkTreeIter tmpiter;
2836
2837       if (iter)
2838         tmpiter = *iter;
2839       else
2840         {
2841           if (!gtk_tree_model_get_iter (tree_view->priv->model, &tmpiter, path))
2842             return FALSE;
2843         }
2844
2845       is_separator = tree_view->priv->row_separator_func (tree_view->priv->model,
2846                                                           &tmpiter,
2847                                                           tree_view->priv->row_separator_data);
2848     }
2849
2850   return is_separator;
2851 }
2852
2853 static gboolean
2854 gtk_tree_view_button_press (GtkWidget      *widget,
2855                             GdkEventButton *event)
2856 {
2857   GtkTreeView *tree_view = GTK_TREE_VIEW (widget);
2858   GList *list;
2859   GtkTreeViewColumn *column = NULL;
2860   gint i;
2861   GdkRectangle background_area;
2862   GdkRectangle cell_area;
2863   gint vertical_separator;
2864   gint horizontal_separator;
2865   gboolean path_is_selectable;
2866   gboolean rtl;
2867
2868   rtl = (gtk_widget_get_direction (widget) == GTK_TEXT_DIR_RTL);
2869   gtk_tree_view_stop_editing (tree_view, FALSE);
2870   gtk_widget_style_get (widget,
2871                         "vertical-separator", &vertical_separator,
2872                         "horizontal-separator", &horizontal_separator,
2873                         NULL);
2874
2875   /* Because grab_focus can cause reentrancy, we delay grab_focus until after
2876    * we're done handling the button press.
2877    */
2878
2879   if (event->window == tree_view->priv->bin_window)
2880     {
2881       GtkRBNode *node;
2882       GtkRBTree *tree;
2883       GtkTreePath *path;
2884       gint depth;
2885       gint new_y;
2886       gint y_offset;
2887       gint dval;
2888       gint pre_val, aft_val;
2889       GtkTreeViewColumn *column = NULL;
2890       gint column_handled_click = FALSE;
2891       gboolean row_double_click = FALSE;
2892       gboolean rtl;
2893       gboolean node_selected;
2894       GdkModifierType extend_mod_mask;
2895       GdkModifierType modify_mod_mask;
2896
2897       /* Empty tree? */
2898       if (tree_view->priv->tree == NULL)
2899         {
2900           grab_focus_and_unset_draw_keyfocus (tree_view);
2901           return TRUE;
2902         }
2903
2904       /* are we in an arrow? */
2905       if (tree_view->priv->prelight_node &&
2906           tree_view->priv->arrow_prelit &&
2907           gtk_tree_view_draw_expanders (tree_view))
2908         {
2909           if (event->button == GDK_BUTTON_PRIMARY)
2910             {
2911               gtk_grab_add (widget);
2912               tree_view->priv->button_pressed_node = tree_view->priv->prelight_node;
2913               tree_view->priv->button_pressed_tree = tree_view->priv->prelight_tree;
2914               gtk_tree_view_queue_draw_arrow (GTK_TREE_VIEW (widget),
2915                                               tree_view->priv->prelight_tree,
2916                                               tree_view->priv->prelight_node);
2917             }
2918
2919           grab_focus_and_unset_draw_keyfocus (tree_view);
2920           return TRUE;
2921         }
2922
2923       /* find the node that was clicked */
2924       new_y = TREE_WINDOW_Y_TO_RBTREE_Y(tree_view, event->y);
2925       if (new_y < 0)
2926         new_y = 0;
2927       y_offset = -_gtk_rbtree_find_offset (tree_view->priv->tree, new_y, &tree, &node);
2928
2929       if (node == NULL)
2930         {
2931           /* We clicked in dead space */
2932           grab_focus_and_unset_draw_keyfocus (tree_view);
2933           return TRUE;
2934         }
2935
2936       /* Get the path and the node */
2937       path = _gtk_tree_path_new_from_rbtree (tree, node);
2938       path_is_selectable = !row_is_separator (tree_view, NULL, path);
2939
2940       if (!path_is_selectable)
2941         {
2942           gtk_tree_path_free (path);
2943           grab_focus_and_unset_draw_keyfocus (tree_view);
2944           return TRUE;
2945         }
2946
2947       depth = gtk_tree_path_get_depth (path);
2948       background_area.y = y_offset + event->y;
2949       background_area.height = gtk_tree_view_get_row_height (tree_view, node);
2950       background_area.x = 0;
2951
2952
2953       /* Let the column have a chance at selecting it. */
2954       rtl = (gtk_widget_get_direction (GTK_WIDGET (tree_view)) == GTK_TEXT_DIR_RTL);
2955       for (list = (rtl ? g_list_last (tree_view->priv->columns) : g_list_first (tree_view->priv->columns));
2956            list; list = (rtl ? list->prev : list->next))
2957         {
2958           GtkTreeViewColumn *candidate = list->data;
2959
2960           if (!gtk_tree_view_column_get_visible (candidate))
2961             continue;
2962
2963           background_area.width = gtk_tree_view_column_get_width (candidate);
2964           if ((background_area.x > (gint) event->x) ||
2965               (background_area.x + background_area.width <= (gint) event->x))
2966             {
2967               background_area.x += background_area.width;
2968               continue;
2969             }
2970
2971           /* we found the focus column */
2972           column = candidate;
2973           cell_area = background_area;
2974           cell_area.width -= horizontal_separator;
2975           cell_area.height -= vertical_separator;
2976           cell_area.x += horizontal_separator/2;
2977           cell_area.y += vertical_separator/2;
2978           if (gtk_tree_view_is_expander_column (tree_view, column))
2979             {
2980               if (!rtl)
2981                 cell_area.x += (depth - 1) * tree_view->priv->level_indentation;
2982               cell_area.width -= (depth - 1) * tree_view->priv->level_indentation;
2983
2984               if (gtk_tree_view_draw_expanders (tree_view))
2985                 {
2986                   if (!rtl)
2987                     cell_area.x += depth * tree_view->priv->expander_size;
2988                   cell_area.width -= depth * tree_view->priv->expander_size;
2989                 }
2990             }
2991           break;
2992         }
2993
2994       if (column == NULL)
2995         {
2996           gtk_tree_path_free (path);
2997           grab_focus_and_unset_draw_keyfocus (tree_view);
2998           return FALSE;
2999         }
3000
3001       _gtk_tree_view_set_focus_column (tree_view, column);
3002
3003       /* decide if we edit */
3004       if (event->type == GDK_BUTTON_PRESS && event->button == GDK_BUTTON_PRIMARY &&
3005           !(event->state & gtk_accelerator_get_default_mod_mask ()))
3006         {
3007           GtkTreePath *anchor;
3008           GtkTreeIter iter;
3009
3010           gtk_tree_model_get_iter (tree_view->priv->model, &iter, path);
3011           gtk_tree_view_column_cell_set_cell_data (column,
3012                                                    tree_view->priv->model,
3013                                                    &iter,
3014                                                    GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_PARENT),
3015                                                    node->children?TRUE:FALSE);
3016
3017           if (tree_view->priv->anchor)
3018             anchor = gtk_tree_row_reference_get_path (tree_view->priv->anchor);
3019           else
3020             anchor = NULL;
3021
3022           if ((anchor && !gtk_tree_path_compare (anchor, path))
3023               || !_gtk_tree_view_column_has_editable_cell (column))
3024             {
3025               GtkCellEditable *cell_editable = NULL;
3026
3027               /* FIXME: get the right flags */
3028               guint flags = 0;
3029
3030               if (_gtk_tree_view_column_cell_event (column,
3031                                                     (GdkEvent *)event,
3032                                                     &cell_area, flags))
3033                 {
3034                   GtkCellArea *area = gtk_cell_layout_get_area (GTK_CELL_LAYOUT (column));
3035                   cell_editable = gtk_cell_area_get_edit_widget (area);
3036
3037                   if (cell_editable != NULL)
3038                     {
3039                       gtk_tree_path_free (path);
3040                       gtk_tree_path_free (anchor);
3041                       return TRUE;
3042                     }
3043                   column_handled_click = TRUE;
3044                 }
3045             }
3046           if (anchor)
3047             gtk_tree_path_free (anchor);
3048         }
3049
3050       extend_mod_mask =
3051         gtk_widget_get_modifier_mask (widget, GDK_MODIFIER_INTENT_EXTEND_SELECTION);
3052
3053       modify_mod_mask =
3054         gtk_widget_get_modifier_mask (widget, GDK_MODIFIER_INTENT_MODIFY_SELECTION);
3055
3056       /* select */
3057       node_selected = GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_SELECTED);
3058       pre_val = gtk_adjustment_get_value (tree_view->priv->vadjustment);
3059
3060       /* we only handle selection modifications on the first button press
3061        */
3062       if (event->type == GDK_BUTTON_PRESS)
3063         {
3064           GtkCellRenderer *focus_cell;
3065
3066           if ((event->state & modify_mod_mask) == modify_mod_mask)
3067             tree_view->priv->modify_selection_pressed = TRUE;
3068           if ((event->state & extend_mod_mask) == extend_mod_mask)
3069             tree_view->priv->extend_selection_pressed = TRUE;
3070
3071           /* We update the focus cell here, this is also needed if the
3072            * column does not contain an editable cell.  In this case,
3073            * GtkCellArea did not receive the event for processing (and
3074            * could not update the focus cell).
3075            */
3076           focus_cell = _gtk_tree_view_column_get_cell_at_pos (column,
3077                                                               &cell_area,
3078                                                               &background_area,
3079                                                               event->x,
3080                                                               event->y);
3081
3082           if (focus_cell)
3083             gtk_tree_view_column_focus_cell (column, focus_cell);
3084
3085           if (event->state & modify_mod_mask)
3086             {
3087               gtk_tree_view_real_set_cursor (tree_view, path, CLAMP_NODE);
3088               gtk_tree_view_real_toggle_cursor_row (tree_view);
3089             }
3090           else if (event->state & extend_mod_mask)
3091             {
3092               gtk_tree_view_real_set_cursor (tree_view, path, CLAMP_NODE);
3093               gtk_tree_view_real_select_cursor_row (tree_view, FALSE);
3094             }
3095           else
3096             {
3097               gtk_tree_view_real_set_cursor (tree_view, path, CLEAR_AND_SELECT | CLAMP_NODE);
3098             }
3099
3100           tree_view->priv->modify_selection_pressed = FALSE;
3101           tree_view->priv->extend_selection_pressed = FALSE;
3102         }
3103
3104       /* the treeview may have been scrolled because of _set_cursor,
3105        * correct here
3106        */
3107
3108       aft_val = gtk_adjustment_get_value (tree_view->priv->vadjustment);
3109       dval = pre_val - aft_val;
3110
3111       cell_area.y += dval;
3112       background_area.y += dval;
3113
3114       /* Save press to possibly begin a drag
3115        */
3116       if (!column_handled_click &&
3117           !tree_view->priv->in_grab &&
3118           tree_view->priv->pressed_button < 0)
3119         {
3120           tree_view->priv->pressed_button = event->button;
3121           tree_view->priv->press_start_x = event->x;
3122           tree_view->priv->press_start_y = event->y;
3123
3124           if (tree_view->priv->rubber_banding_enable
3125               && !node_selected
3126               && gtk_tree_selection_get_mode (tree_view->priv->selection) == GTK_SELECTION_MULTIPLE)
3127             {
3128               tree_view->priv->press_start_y += tree_view->priv->dy;
3129               tree_view->priv->rubber_band_x = event->x;
3130               tree_view->priv->rubber_band_y = event->y + tree_view->priv->dy;
3131               tree_view->priv->rubber_band_status = RUBBER_BAND_MAYBE_START;
3132
3133               if ((event->state & modify_mod_mask) == modify_mod_mask)
3134                 tree_view->priv->rubber_band_modify = TRUE;
3135               if ((event->state & extend_mod_mask) == extend_mod_mask)
3136                 tree_view->priv->rubber_band_extend = TRUE;
3137             }
3138         }
3139
3140       /* Test if a double click happened on the same row. */
3141       if (event->button == GDK_BUTTON_PRIMARY && event->type == GDK_BUTTON_PRESS)
3142         {
3143           int double_click_time, double_click_distance;
3144
3145           g_object_get (gtk_settings_get_default (),
3146                         "gtk-double-click-time", &double_click_time,
3147                         "gtk-double-click-distance", &double_click_distance,
3148                         NULL);
3149
3150           /* Same conditions as _gdk_event_button_generate */
3151           if (tree_view->priv->last_button_x != -1 &&
3152               (event->time < tree_view->priv->last_button_time + double_click_time) &&
3153               (ABS (event->x - tree_view->priv->last_button_x) <= double_click_distance) &&
3154               (ABS (event->y - tree_view->priv->last_button_y) <= double_click_distance))
3155             {
3156               /* We do no longer compare paths of this row and the
3157                * row clicked previously.  We use the double click
3158                * distance to decide whether this is a valid click,
3159                * allowing the mouse to slightly move over another row.
3160                */
3161               row_double_click = TRUE;
3162
3163               tree_view->priv->last_button_time = 0;
3164               tree_view->priv->last_button_x = -1;
3165               tree_view->priv->last_button_y = -1;
3166             }
3167           else
3168             {
3169               tree_view->priv->last_button_time = event->time;
3170               tree_view->priv->last_button_x = event->x;
3171               tree_view->priv->last_button_y = event->y;
3172             }
3173         }
3174
3175       if (row_double_click)
3176         {
3177           gtk_grab_remove (widget);
3178           gtk_tree_view_row_activated (tree_view, path, column);
3179
3180           if (tree_view->priv->pressed_button == event->button)
3181             tree_view->priv->pressed_button = -1;
3182         }
3183
3184       gtk_tree_path_free (path);
3185
3186       /* If we activated the row through a double click we don't want to grab
3187        * focus back, as moving focus to another widget is pretty common.
3188        */
3189       if (!row_double_click)
3190         grab_focus_and_unset_draw_keyfocus (tree_view);
3191
3192       return TRUE;
3193     }
3194
3195   /* We didn't click in the window.  Let's check to see if we clicked on a column resize window.
3196    */
3197   for (i = 0, list = tree_view->priv->columns; list; list = list->next, i++)
3198     {
3199       column = list->data;
3200       if (event->window == _gtk_tree_view_column_get_window (column) &&
3201           gtk_tree_view_column_get_resizable (column) &&
3202           _gtk_tree_view_column_get_window (column))
3203         {
3204           gpointer drag_data;
3205
3206           if (event->type == GDK_2BUTTON_PRESS &&
3207               gtk_tree_view_column_get_sizing (column) != GTK_TREE_VIEW_COLUMN_AUTOSIZE)
3208             {
3209               _gtk_tree_view_column_set_use_resized_width (column, FALSE);
3210               _gtk_tree_view_column_autosize (tree_view, column);
3211               return TRUE;
3212             }
3213
3214           if (gdk_device_grab (gdk_event_get_device ((GdkEvent*)event),
3215                                _gtk_tree_view_column_get_window (column),
3216                                GDK_OWNERSHIP_NONE,
3217                                FALSE,
3218                                GDK_POINTER_MOTION_HINT_MASK
3219                                 | GDK_BUTTON1_MOTION_MASK
3220                                 | GDK_BUTTON_RELEASE_MASK,
3221                                NULL,
3222                                event->time) != GDK_GRAB_SUCCESS)
3223             return FALSE;
3224
3225           gtk_grab_add (widget);
3226           tree_view->priv->in_column_resize = TRUE;
3227
3228           _gtk_tree_view_column_set_resized_width (column, gtk_tree_view_column_get_width (column) -
3229                                                    tree_view->priv->last_extra_space_per_column);
3230
3231           /* block attached dnd signal handler */
3232           drag_data = g_object_get_data (G_OBJECT (widget), "gtk-site-data");
3233           if (drag_data)
3234             g_signal_handlers_block_matched (widget,
3235                                              G_SIGNAL_MATCH_DATA,
3236                                              0, 0, NULL, NULL,
3237                                              drag_data);
3238
3239           tree_view->priv->drag_pos = i;
3240           tree_view->priv->x_drag = gtk_tree_view_column_get_x_offset (column) + (rtl ? 0 : gtk_tree_view_column_get_width (column));
3241
3242           if (!gtk_widget_has_focus (widget))
3243             gtk_widget_grab_focus (widget);
3244
3245           return TRUE;
3246         }
3247     }
3248   return FALSE;
3249 }
3250
3251 /* GtkWidget::button_release_event helper */
3252 static gboolean
3253 gtk_tree_view_button_release_drag_column (GtkWidget      *widget,
3254                                           GdkEventButton *event)
3255 {
3256   GtkTreeView *tree_view;
3257   GtkWidget *button;
3258   GList *l;
3259   gboolean rtl;
3260   GdkDevice *device, *other;
3261
3262   tree_view = GTK_TREE_VIEW (widget);
3263
3264   rtl = (gtk_widget_get_direction (widget) == GTK_TEXT_DIR_RTL);
3265   device = gdk_event_get_device ((GdkEvent*)event);
3266   other = gdk_device_get_associated_device (device);
3267   gdk_device_ungrab (device, event->time);
3268   gdk_device_ungrab (other, event->time);
3269
3270   /* Move the button back */
3271   button = gtk_tree_view_column_get_button (tree_view->priv->drag_column);
3272   g_object_ref (button);
3273   gtk_container_remove (GTK_CONTAINER (tree_view), button);
3274   gtk_widget_set_parent_window (button, tree_view->priv->header_window);
3275   gtk_widget_set_parent (button, GTK_WIDGET (tree_view));
3276   g_object_unref (button);
3277   gtk_widget_queue_resize (widget);
3278   if (gtk_tree_view_column_get_resizable (tree_view->priv->drag_column))
3279     {
3280       gdk_window_raise (_gtk_tree_view_column_get_window (tree_view->priv->drag_column));
3281       gdk_window_show (_gtk_tree_view_column_get_window (tree_view->priv->drag_column));
3282     }
3283   else
3284     gdk_window_hide (_gtk_tree_view_column_get_window (tree_view->priv->drag_column));
3285
3286   gtk_widget_grab_focus (button);
3287
3288   if (rtl)
3289     {
3290       if (tree_view->priv->cur_reorder &&
3291           tree_view->priv->cur_reorder->right_column != tree_view->priv->drag_column)
3292         gtk_tree_view_move_column_after (tree_view, tree_view->priv->drag_column,
3293                                          tree_view->priv->cur_reorder->right_column);
3294     }
3295   else
3296     {
3297       if (tree_view->priv->cur_reorder &&
3298           tree_view->priv->cur_reorder->left_column != tree_view->priv->drag_column)
3299         gtk_tree_view_move_column_after (tree_view, tree_view->priv->drag_column,
3300                                          tree_view->priv->cur_reorder->left_column);
3301     }
3302   tree_view->priv->drag_column = NULL;
3303   gdk_window_hide (tree_view->priv->drag_window);
3304
3305   for (l = tree_view->priv->column_drag_info; l != NULL; l = l->next)
3306     g_slice_free (GtkTreeViewColumnReorder, l->data);
3307   g_list_free (tree_view->priv->column_drag_info);
3308   tree_view->priv->column_drag_info = NULL;
3309   tree_view->priv->cur_reorder = NULL;
3310
3311   if (tree_view->priv->drag_highlight_window)
3312     gdk_window_hide (tree_view->priv->drag_highlight_window);
3313
3314   /* Reset our flags */
3315   tree_view->priv->drag_column_window_state = DRAG_COLUMN_WINDOW_STATE_UNSET;
3316   tree_view->priv->in_column_drag = FALSE;
3317
3318   return TRUE;
3319 }
3320
3321 /* GtkWidget::button_release_event helper */
3322 static gboolean
3323 gtk_tree_view_button_release_column_resize (GtkWidget      *widget,
3324                                             GdkEventButton *event)
3325 {
3326   GtkTreeView *tree_view;
3327   gpointer drag_data;
3328
3329   tree_view = GTK_TREE_VIEW (widget);
3330
3331   tree_view->priv->drag_pos = -1;
3332
3333   /* unblock attached dnd signal handler */
3334   drag_data = g_object_get_data (G_OBJECT (widget), "gtk-site-data");
3335   if (drag_data)
3336     g_signal_handlers_unblock_matched (widget,
3337                                        G_SIGNAL_MATCH_DATA,
3338                                        0, 0, NULL, NULL,
3339                                        drag_data);
3340
3341   tree_view->priv->in_column_resize = FALSE;
3342   gtk_grab_remove (widget);
3343   gdk_device_ungrab (gdk_event_get_device ((GdkEvent*)event), event->time);
3344   return TRUE;
3345 }
3346
3347 static gboolean
3348 gtk_tree_view_button_release (GtkWidget      *widget,
3349                               GdkEventButton *event)
3350 {
3351   GtkTreeView *tree_view = GTK_TREE_VIEW (widget);
3352
3353   if (tree_view->priv->in_column_drag)
3354     return gtk_tree_view_button_release_drag_column (widget, event);
3355
3356   if (tree_view->priv->rubber_band_status)
3357     gtk_tree_view_stop_rubber_band (tree_view);
3358
3359   if (tree_view->priv->pressed_button == event->button)
3360     tree_view->priv->pressed_button = -1;
3361
3362   if (tree_view->priv->in_column_resize)
3363     return gtk_tree_view_button_release_column_resize (widget, event);
3364
3365   if (tree_view->priv->button_pressed_node == NULL)
3366     return FALSE;
3367
3368   if (event->button == GDK_BUTTON_PRIMARY)
3369     {
3370       if (tree_view->priv->button_pressed_node == tree_view->priv->prelight_node &&
3371           tree_view->priv->arrow_prelit)
3372         {
3373           GtkTreePath *path = NULL;
3374
3375           path = _gtk_tree_path_new_from_rbtree (tree_view->priv->button_pressed_tree,
3376                                                  tree_view->priv->button_pressed_node);
3377           /* Actually activate the node */
3378           if (tree_view->priv->button_pressed_node->children == NULL)
3379             gtk_tree_view_real_expand_row (tree_view, path,
3380                                            tree_view->priv->button_pressed_tree,
3381                                            tree_view->priv->button_pressed_node,
3382                                            FALSE, TRUE);
3383           else
3384             gtk_tree_view_real_collapse_row (GTK_TREE_VIEW (widget), path,
3385                                              tree_view->priv->button_pressed_tree,
3386                                              tree_view->priv->button_pressed_node, TRUE);
3387           gtk_tree_path_free (path);
3388         }
3389
3390       gtk_grab_remove (widget);
3391       tree_view->priv->button_pressed_tree = NULL;
3392       tree_view->priv->button_pressed_node = NULL;
3393     }
3394
3395   return TRUE;
3396 }
3397
3398 static gboolean
3399 gtk_tree_view_grab_broken (GtkWidget          *widget,
3400                            GdkEventGrabBroken *event)
3401 {
3402   GtkTreeView *tree_view = GTK_TREE_VIEW (widget);
3403
3404   if (tree_view->priv->in_column_drag)
3405     gtk_tree_view_button_release_drag_column (widget, (GdkEventButton *)event);
3406
3407   if (tree_view->priv->in_column_resize)
3408     gtk_tree_view_button_release_column_resize (widget, (GdkEventButton *)event);
3409
3410   return TRUE;
3411 }
3412
3413 #if 0
3414 static gboolean
3415 gtk_tree_view_configure (GtkWidget *widget,
3416                          GdkEventConfigure *event)
3417 {
3418   GtkTreeView *tree_view;
3419
3420   tree_view = GTK_TREE_VIEW (widget);
3421   tree_view->priv->search_position_func (tree_view, tree_view->priv->search_window);
3422
3423   return FALSE;
3424 }
3425 #endif
3426
3427 /* GtkWidget::motion_event function set.
3428  */
3429
3430 static gboolean
3431 coords_are_over_arrow (GtkTreeView *tree_view,
3432                        GtkRBTree   *tree,
3433                        GtkRBNode   *node,
3434                        /* these are in bin window coords */
3435                        gint         x,
3436                        gint         y)
3437 {
3438   GdkRectangle arrow;
3439   gint x2;
3440
3441   if (!gtk_widget_get_realized (GTK_WIDGET (tree_view)))
3442     return FALSE;
3443
3444   if ((node->flags & GTK_RBNODE_IS_PARENT) == 0)
3445     return FALSE;
3446
3447   arrow.y = gtk_tree_view_get_row_y_offset (tree_view, tree, node);
3448   arrow.height = gtk_tree_view_get_row_height (tree_view, node);
3449
3450   gtk_tree_view_get_arrow_xrange (tree_view, tree, &arrow.x, &x2);
3451
3452   arrow.width = x2 - arrow.x;
3453
3454   return (x >= arrow.x &&
3455           x < (arrow.x + arrow.width) &&
3456           y >= arrow.y &&
3457           y < (arrow.y + arrow.height));
3458 }
3459
3460 static gboolean
3461 auto_expand_timeout (gpointer data)
3462 {
3463   GtkTreeView *tree_view = GTK_TREE_VIEW (data);
3464   GtkTreePath *path;
3465
3466   if (tree_view->priv->prelight_node)
3467     {
3468       path = _gtk_tree_path_new_from_rbtree (tree_view->priv->prelight_tree,
3469                                              tree_view->priv->prelight_node);
3470
3471       if (tree_view->priv->prelight_node->children)
3472         gtk_tree_view_collapse_row (tree_view, path);
3473       else
3474         gtk_tree_view_expand_row (tree_view, path, FALSE);
3475
3476       gtk_tree_path_free (path);
3477     }
3478
3479   tree_view->priv->auto_expand_timeout = 0;
3480
3481   return FALSE;
3482 }
3483
3484 static void
3485 remove_auto_expand_timeout (GtkTreeView *tree_view)
3486 {
3487   if (tree_view->priv->auto_expand_timeout != 0)
3488     {
3489       g_source_remove (tree_view->priv->auto_expand_timeout);
3490       tree_view->priv->auto_expand_timeout = 0;
3491     }
3492 }
3493
3494 static void
3495 do_prelight (GtkTreeView *tree_view,
3496              GtkRBTree   *tree,
3497              GtkRBNode   *node,
3498              /* these are in bin_window coords */
3499              gint         x,
3500              gint         y)
3501 {
3502   if (tree_view->priv->prelight_tree == tree &&
3503       tree_view->priv->prelight_node == node)
3504     {
3505       /*  We are still on the same node,
3506           but we might need to take care of the arrow  */
3507
3508       if (tree && node && gtk_tree_view_draw_expanders (tree_view))
3509         {
3510           gboolean over_arrow;
3511
3512           over_arrow = coords_are_over_arrow (tree_view, tree, node, x, y);
3513
3514           if (over_arrow != tree_view->priv->arrow_prelit)
3515             {
3516               if (over_arrow)
3517                 tree_view->priv->arrow_prelit = TRUE;
3518               else
3519                 tree_view->priv->arrow_prelit = FALSE;
3520
3521               gtk_tree_view_queue_draw_arrow (tree_view, tree, node);
3522             }
3523         }
3524
3525       return;
3526     }
3527
3528   if (tree_view->priv->prelight_tree && tree_view->priv->prelight_node)
3529     {
3530       /*  Unprelight the old node and arrow  */
3531
3532       GTK_RBNODE_UNSET_FLAG (tree_view->priv->prelight_node,
3533                              GTK_RBNODE_IS_PRELIT);
3534
3535       if (tree_view->priv->arrow_prelit
3536           && gtk_tree_view_draw_expanders (tree_view))
3537         {
3538           tree_view->priv->arrow_prelit = FALSE;
3539
3540           gtk_tree_view_queue_draw_arrow (tree_view,
3541                                           tree_view->priv->prelight_tree,
3542                                           tree_view->priv->prelight_node);
3543         }
3544
3545       _gtk_tree_view_queue_draw_node (tree_view,
3546                                       tree_view->priv->prelight_tree,
3547                                       tree_view->priv->prelight_node,
3548                                       NULL);
3549     }
3550
3551
3552   if (tree_view->priv->hover_expand)
3553     remove_auto_expand_timeout (tree_view);
3554
3555   /*  Set the new prelight values  */
3556   tree_view->priv->prelight_node = node;
3557   tree_view->priv->prelight_tree = tree;
3558
3559   if (!node || !tree)
3560     return;
3561
3562   /*  Prelight the new node and arrow  */
3563
3564   if (gtk_tree_view_draw_expanders (tree_view)
3565       && coords_are_over_arrow (tree_view, tree, node, x, y))
3566     {
3567       tree_view->priv->arrow_prelit = TRUE;
3568
3569       gtk_tree_view_queue_draw_arrow (tree_view, tree, node);
3570     }
3571
3572   GTK_RBNODE_SET_FLAG (node, GTK_RBNODE_IS_PRELIT);
3573
3574   _gtk_tree_view_queue_draw_node (tree_view, tree, node, NULL);
3575
3576   if (tree_view->priv->hover_expand)
3577     {
3578       tree_view->priv->auto_expand_timeout =
3579         gdk_threads_add_timeout (AUTO_EXPAND_TIMEOUT, auto_expand_timeout, tree_view);
3580     }
3581 }
3582
3583 static void
3584 prelight_or_select (GtkTreeView *tree_view,
3585                     GtkRBTree   *tree,
3586                     GtkRBNode   *node,
3587                     /* these are in bin_window coords */
3588                     gint         x,
3589                     gint         y)
3590 {
3591   GtkSelectionMode mode = gtk_tree_selection_get_mode (tree_view->priv->selection);
3592
3593   if (tree_view->priv->hover_selection &&
3594       (mode == GTK_SELECTION_SINGLE || mode == GTK_SELECTION_BROWSE) &&
3595       !(tree_view->priv->edited_column &&
3596         gtk_cell_area_get_edit_widget
3597         (gtk_cell_layout_get_area (GTK_CELL_LAYOUT (tree_view->priv->edited_column)))))
3598     {
3599       if (node)
3600         {
3601           if (!GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_SELECTED))
3602             {
3603               GtkTreePath *path;
3604
3605               path = _gtk_tree_path_new_from_rbtree (tree, node);
3606               gtk_tree_selection_select_path (tree_view->priv->selection, path);
3607               if (GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_SELECTED))
3608                 {
3609                   tree_view->priv->draw_keyfocus = FALSE;
3610                   gtk_tree_view_real_set_cursor (tree_view, path, 0);
3611                 }
3612               gtk_tree_path_free (path);
3613             }
3614         }
3615
3616       else if (mode == GTK_SELECTION_SINGLE)
3617         gtk_tree_selection_unselect_all (tree_view->priv->selection);
3618     }
3619
3620     do_prelight (tree_view, tree, node, x, y);
3621 }
3622
3623 static void
3624 ensure_unprelighted (GtkTreeView *tree_view)
3625 {
3626   do_prelight (tree_view,
3627                NULL, NULL,
3628                -1000, -1000); /* coords not possibly over an arrow */
3629
3630   g_assert (tree_view->priv->prelight_node == NULL);
3631 }
3632
3633 static void
3634 update_prelight (GtkTreeView *tree_view,
3635                  gint         x,
3636                  gint         y)
3637 {
3638   int new_y;
3639   GtkRBTree *tree;
3640   GtkRBNode *node;
3641
3642   if (tree_view->priv->tree == NULL)
3643     return;
3644
3645   if (x == -10000)
3646     {
3647       ensure_unprelighted (tree_view);
3648       return;
3649     }
3650
3651   new_y = TREE_WINDOW_Y_TO_RBTREE_Y (tree_view, y);
3652   if (new_y < 0)
3653     new_y = 0;
3654
3655   _gtk_rbtree_find_offset (tree_view->priv->tree,
3656                            new_y, &tree, &node);
3657
3658   if (node)
3659     prelight_or_select (tree_view, tree, node, x, y);
3660 }
3661
3662
3663
3664
3665 /* Our motion arrow is either a box (in the case of the original spot)
3666  * or an arrow.  It is expander_size wide.
3667  */
3668 /*
3669  * 11111111111111
3670  * 01111111111110
3671  * 00111111111100
3672  * 00011111111000
3673  * 00001111110000
3674  * 00000111100000
3675  * 00000111100000
3676  * 00000111100000
3677  * ~ ~ ~ ~ ~ ~ ~
3678  * 00000111100000
3679  * 00000111100000
3680  * 00000111100000
3681  * 00001111110000
3682  * 00011111111000
3683  * 00111111111100
3684  * 01111111111110
3685  * 11111111111111
3686  */
3687
3688 static void
3689 gtk_tree_view_motion_draw_column_motion_arrow (GtkTreeView *tree_view)
3690 {
3691   GtkTreeViewColumnReorder *reorder = tree_view->priv->cur_reorder;
3692   GtkWidget *widget = GTK_WIDGET (tree_view);
3693   cairo_surface_t *mask_image;
3694   cairo_region_t *mask_region;
3695   gint x;
3696   gint y;
3697   gint width;
3698   gint height;
3699   gint arrow_type = DRAG_COLUMN_WINDOW_STATE_UNSET;
3700   GdkWindowAttr attributes;
3701   guint attributes_mask;
3702   cairo_t *cr;
3703
3704   if (!reorder ||
3705       reorder->left_column == tree_view->priv->drag_column ||
3706       reorder->right_column == tree_view->priv->drag_column)
3707     arrow_type = DRAG_COLUMN_WINDOW_STATE_ORIGINAL;
3708   else if (reorder->left_column || reorder->right_column)
3709     {
3710       GtkAllocation left_allocation, right_allocation;
3711       GdkRectangle visible_rect;
3712       GtkWidget *button;
3713
3714       gtk_tree_view_get_visible_rect (tree_view, &visible_rect);
3715       if (reorder->left_column)
3716         {
3717           button = gtk_tree_view_column_get_button (reorder->left_column);
3718           gtk_widget_get_allocation (button, &left_allocation);
3719           x = left_allocation.x + left_allocation.width;
3720         }
3721       else
3722         {
3723           button = gtk_tree_view_column_get_button (reorder->right_column);
3724           gtk_widget_get_allocation (button, &right_allocation);
3725           x = right_allocation.x;
3726         }
3727
3728       if (x < visible_rect.x)
3729         arrow_type = DRAG_COLUMN_WINDOW_STATE_ARROW_LEFT;
3730       else if (x > visible_rect.x + visible_rect.width)
3731         arrow_type = DRAG_COLUMN_WINDOW_STATE_ARROW_RIGHT;
3732       else
3733         arrow_type = DRAG_COLUMN_WINDOW_STATE_ARROW;
3734     }
3735
3736   /* We want to draw the rectangle over the initial location. */
3737   if (arrow_type == DRAG_COLUMN_WINDOW_STATE_ORIGINAL)
3738     {
3739       if (tree_view->priv->drag_column_window_state != DRAG_COLUMN_WINDOW_STATE_ORIGINAL)
3740         {
3741           GtkAllocation drag_allocation;
3742           GtkWidget    *button;
3743
3744           if (tree_view->priv->drag_highlight_window)
3745             {
3746               gdk_window_set_user_data (tree_view->priv->drag_highlight_window,
3747                                         NULL);
3748               gdk_window_destroy (tree_view->priv->drag_highlight_window);
3749             }
3750
3751           button = gtk_tree_view_column_get_button (tree_view->priv->drag_column);
3752           attributes.window_type = GDK_WINDOW_CHILD;
3753           attributes.wclass = GDK_INPUT_OUTPUT;
3754           attributes.x = tree_view->priv->drag_column_x;
3755           attributes.y = 0;
3756           gtk_widget_get_allocation (button, &drag_allocation);
3757           width = attributes.width = drag_allocation.width;
3758           height = attributes.height = drag_allocation.height;
3759           attributes.visual = gtk_widget_get_visual (GTK_WIDGET (tree_view));
3760           attributes.event_mask = GDK_VISIBILITY_NOTIFY_MASK | GDK_EXPOSURE_MASK | GDK_POINTER_MOTION_MASK;
3761           attributes_mask = GDK_WA_X | GDK_WA_Y | GDK_WA_VISUAL;
3762           tree_view->priv->drag_highlight_window = gdk_window_new (tree_view->priv->header_window, &attributes, attributes_mask);
3763           gdk_window_set_user_data (tree_view->priv->drag_highlight_window, GTK_WIDGET (tree_view));
3764
3765           mask_image = cairo_image_surface_create (CAIRO_FORMAT_A1, width, height);
3766           cr = cairo_create (mask_image);
3767
3768           cairo_rectangle (cr, 1, 1, width - 2, height - 2);
3769           cairo_stroke (cr);
3770           cairo_destroy (cr);
3771
3772           mask_region = gdk_cairo_region_create_from_surface (mask_image);
3773           gdk_window_shape_combine_region (tree_view->priv->drag_highlight_window,
3774                                            mask_region, 0, 0);
3775
3776           cairo_region_destroy (mask_region);
3777           cairo_surface_destroy (mask_image);
3778
3779           tree_view->priv->drag_column_window_state = DRAG_COLUMN_WINDOW_STATE_ORIGINAL;
3780         }
3781     }
3782   else if (arrow_type == DRAG_COLUMN_WINDOW_STATE_ARROW)
3783     {
3784       GtkAllocation button_allocation;
3785       GtkWidget    *button;
3786
3787       width = tree_view->priv->expander_size;
3788
3789       /* Get x, y, width, height of arrow */
3790       gdk_window_get_origin (tree_view->priv->header_window, &x, &y);
3791       if (reorder->left_column)
3792         {
3793           button = gtk_tree_view_column_get_button (reorder->left_column);
3794           gtk_widget_get_allocation (button, &button_allocation);
3795           x += button_allocation.x + button_allocation.width - width/2;
3796           height = button_allocation.height;
3797         }
3798       else
3799         {
3800           button = gtk_tree_view_column_get_button (reorder->right_column);
3801           gtk_widget_get_allocation (button, &button_allocation);
3802           x += button_allocation.x - width/2;
3803           height = button_allocation.height;
3804         }
3805       y -= tree_view->priv->expander_size/2; /* The arrow takes up only half the space */
3806       height += tree_view->priv->expander_size;
3807
3808       /* Create the new window */
3809       if (tree_view->priv->drag_column_window_state != DRAG_COLUMN_WINDOW_STATE_ARROW)
3810         {
3811           if (tree_view->priv->drag_highlight_window)
3812             {
3813               gdk_window_set_user_data (tree_view->priv->drag_highlight_window,
3814                                         NULL);
3815               gdk_window_destroy (tree_view->priv->drag_highlight_window);
3816             }
3817
3818           attributes.window_type = GDK_WINDOW_TEMP;
3819           attributes.wclass = GDK_INPUT_OUTPUT;
3820           attributes.visual = gtk_widget_get_visual (GTK_WIDGET (tree_view));
3821           attributes.event_mask = GDK_VISIBILITY_NOTIFY_MASK | GDK_EXPOSURE_MASK | GDK_POINTER_MOTION_MASK;
3822           attributes_mask = GDK_WA_X | GDK_WA_Y | GDK_WA_VISUAL;
3823           attributes.x = x;
3824           attributes.y = y;
3825           attributes.width = width;
3826           attributes.height = height;
3827           tree_view->priv->drag_highlight_window = gdk_window_new (gtk_widget_get_root_window (widget),
3828                                                                    &attributes, attributes_mask);
3829           gdk_window_set_user_data (tree_view->priv->drag_highlight_window, GTK_WIDGET (tree_view));
3830
3831           mask_image = cairo_image_surface_create (CAIRO_FORMAT_A1, width, height);
3832
3833           cr = cairo_create (mask_image);
3834           cairo_move_to (cr, 0, 0);
3835           cairo_line_to (cr, width, 0);
3836           cairo_line_to (cr, width / 2., width / 2);
3837           cairo_move_to (cr, 0, height);
3838           cairo_line_to (cr, width, height);
3839           cairo_line_to (cr, width / 2., height - width / 2.);
3840           cairo_fill (cr);
3841           cairo_destroy (cr);
3842
3843           mask_region = gdk_cairo_region_create_from_surface (mask_image);
3844           gdk_window_shape_combine_region (tree_view->priv->drag_highlight_window,
3845                                            mask_region, 0, 0);
3846
3847           cairo_region_destroy (mask_region);
3848           cairo_surface_destroy (mask_image);
3849         }
3850
3851       tree_view->priv->drag_column_window_state = DRAG_COLUMN_WINDOW_STATE_ARROW;
3852       gdk_window_move (tree_view->priv->drag_highlight_window, x, y);
3853     }
3854   else if (arrow_type == DRAG_COLUMN_WINDOW_STATE_ARROW_LEFT ||
3855            arrow_type == DRAG_COLUMN_WINDOW_STATE_ARROW_RIGHT)
3856     {
3857       GtkAllocation allocation;
3858       GtkWidget    *button;
3859
3860       width = tree_view->priv->expander_size;
3861
3862       /* Get x, y, width, height of arrow */
3863       width = width/2; /* remember, the arrow only takes half the available width */
3864       gdk_window_get_origin (gtk_widget_get_window (widget),
3865                              &x, &y);
3866       if (arrow_type == DRAG_COLUMN_WINDOW_STATE_ARROW_RIGHT)
3867         {
3868           gtk_widget_get_allocation (widget, &allocation);
3869           x += allocation.width - width;
3870         }
3871
3872       if (reorder->left_column)
3873         {
3874           button = gtk_tree_view_column_get_button (reorder->left_column);
3875           gtk_widget_get_allocation (button, &allocation);
3876           height = allocation.height;
3877         }
3878       else
3879         {
3880           button = gtk_tree_view_column_get_button (reorder->right_column);
3881           gtk_widget_get_allocation (button, &allocation);
3882           height = allocation.height;
3883         }
3884
3885       y -= tree_view->priv->expander_size;
3886       height += 2*tree_view->priv->expander_size;
3887
3888       /* Create the new window */
3889       if (tree_view->priv->drag_column_window_state != DRAG_COLUMN_WINDOW_STATE_ARROW_LEFT &&
3890           tree_view->priv->drag_column_window_state != DRAG_COLUMN_WINDOW_STATE_ARROW_RIGHT)
3891         {
3892           if (tree_view->priv->drag_highlight_window)
3893             {
3894               gdk_window_set_user_data (tree_view->priv->drag_highlight_window,
3895                                         NULL);
3896               gdk_window_destroy (tree_view->priv->drag_highlight_window);
3897             }
3898
3899           attributes.window_type = GDK_WINDOW_TEMP;
3900           attributes.wclass = GDK_INPUT_OUTPUT;
3901           attributes.visual = gtk_widget_get_visual (GTK_WIDGET (tree_view));
3902           attributes.event_mask = GDK_VISIBILITY_NOTIFY_MASK | GDK_EXPOSURE_MASK | GDK_POINTER_MOTION_MASK;
3903           attributes_mask = GDK_WA_X | GDK_WA_Y | GDK_WA_VISUAL;
3904           attributes.x = x;
3905           attributes.y = y;
3906           attributes.width = width;
3907           attributes.height = height;
3908           tree_view->priv->drag_highlight_window = gdk_window_new (NULL, &attributes, attributes_mask);
3909           gdk_window_set_user_data (tree_view->priv->drag_highlight_window, GTK_WIDGET (tree_view));
3910
3911           mask_image = cairo_image_surface_create (CAIRO_FORMAT_A1, width, height);
3912
3913           cr = cairo_create (mask_image);
3914           /* mirror if we're on the left */
3915           if (arrow_type == DRAG_COLUMN_WINDOW_STATE_ARROW_LEFT)
3916             {
3917               cairo_translate (cr, width, 0);
3918               cairo_scale (cr, -1, 1);
3919             }
3920           cairo_move_to (cr, 0, 0);
3921           cairo_line_to (cr, width, width);
3922           cairo_line_to (cr, 0, tree_view->priv->expander_size);
3923           cairo_move_to (cr, 0, height);
3924           cairo_line_to (cr, width, height - width);
3925           cairo_line_to (cr, 0, height - tree_view->priv->expander_size);
3926           cairo_fill (cr);
3927           cairo_destroy (cr);
3928
3929           mask_region = gdk_cairo_region_create_from_surface (mask_image);
3930           gdk_window_shape_combine_region (tree_view->priv->drag_highlight_window,
3931                                            mask_region, 0, 0);
3932
3933           cairo_region_destroy (mask_region);
3934           cairo_surface_destroy (mask_image);
3935         }
3936
3937       tree_view->priv->drag_column_window_state = arrow_type;
3938       gdk_window_move (tree_view->priv->drag_highlight_window, x, y);
3939    }
3940   else
3941     {
3942       g_warning (G_STRLOC"Invalid GtkTreeViewColumnReorder struct");
3943       gdk_window_hide (tree_view->priv->drag_highlight_window);
3944       return;
3945     }
3946
3947   gdk_window_show (tree_view->priv->drag_highlight_window);
3948   gdk_window_raise (tree_view->priv->drag_highlight_window);
3949 }
3950
3951 static gboolean
3952 gtk_tree_view_motion_resize_column (GtkWidget      *widget,
3953                                     GdkEventMotion *event)
3954 {
3955   gint x;
3956   gint new_width;
3957   GtkTreeViewColumn *column;
3958   GtkTreeView *tree_view = GTK_TREE_VIEW (widget);
3959
3960   column = gtk_tree_view_get_column (tree_view, tree_view->priv->drag_pos);
3961
3962   if (event->is_hint || event->window != gtk_widget_get_window (widget))
3963     gdk_window_get_device_position (gtk_widget_get_window (widget),
3964                                     gdk_event_get_device ((GdkEvent *) event),
3965                                     &x, NULL, NULL);
3966   else
3967     x = event->x;
3968
3969   if (tree_view->priv->hadjustment)
3970     x += gtk_adjustment_get_value (tree_view->priv->hadjustment);
3971
3972   new_width = gtk_tree_view_new_column_width (tree_view,
3973                                               tree_view->priv->drag_pos, &x);
3974   if (x != tree_view->priv->x_drag &&
3975       (new_width != gtk_tree_view_column_get_fixed_width (column)))
3976     {
3977       _gtk_tree_view_column_set_use_resized_width (column, TRUE);
3978
3979       if (gtk_tree_view_column_get_expand (column))
3980         new_width -= tree_view->priv->last_extra_space_per_column;
3981
3982       _gtk_tree_view_column_set_resized_width (column, new_width);
3983
3984
3985       gtk_widget_queue_resize (widget);
3986     }
3987
3988   return FALSE;
3989 }
3990
3991
3992 static void
3993 gtk_tree_view_update_current_reorder (GtkTreeView *tree_view,
3994                                       GdkEvent    *event)
3995 {
3996   GtkTreeViewColumnReorder *reorder = NULL;
3997   GList *list;
3998   gint mouse_x;
3999
4000   gdk_window_get_device_position (tree_view->priv->header_window,
4001                                   gdk_event_get_device (event),
4002                                   &mouse_x, NULL, NULL);
4003   for (list = tree_view->priv->column_drag_info; list; list = list->next)
4004     {
4005       reorder = (GtkTreeViewColumnReorder *) list->data;
4006       if (mouse_x >= reorder->left_align && mouse_x < reorder->right_align)
4007         break;
4008       reorder = NULL;
4009     }
4010
4011   /*  if (reorder && reorder == tree_view->priv->cur_reorder)
4012       return;*/
4013
4014   tree_view->priv->cur_reorder = reorder;
4015   gtk_tree_view_motion_draw_column_motion_arrow (tree_view);
4016 }
4017
4018 static void
4019 gtk_tree_view_vertical_autoscroll (GtkTreeView *tree_view)
4020 {
4021   GdkRectangle visible_rect;
4022   gint y;
4023   gint offset;
4024
4025   gdk_window_get_device_position (tree_view->priv->bin_window,
4026                                   gdk_device_manager_get_client_pointer (
4027                                     gdk_display_get_device_manager (
4028                                       gtk_widget_get_display (GTK_WIDGET (tree_view)))),
4029                                   NULL, &y, NULL);
4030   y += tree_view->priv->dy;
4031
4032   gtk_tree_view_get_visible_rect (tree_view, &visible_rect);
4033
4034   /* see if we are near the edge. */
4035   offset = y - (visible_rect.y + 2 * SCROLL_EDGE_SIZE);
4036   if (offset > 0)
4037     {
4038       offset = y - (visible_rect.y + visible_rect.height - 2 * SCROLL_EDGE_SIZE);
4039       if (offset < 0)
4040         return;
4041     }
4042
4043   gtk_adjustment_set_value (tree_view->priv->vadjustment,
4044                             MAX (gtk_adjustment_get_value (tree_view->priv->vadjustment) + offset, 0.0));
4045 }
4046
4047 static gboolean
4048 gtk_tree_view_horizontal_autoscroll (GtkTreeView *tree_view,
4049                                      GdkEvent    *event)
4050 {
4051   GdkRectangle visible_rect;
4052   gint x;
4053   gint offset;
4054
4055   gdk_window_get_device_position (tree_view->priv->bin_window,
4056                                   gdk_event_get_device (event),
4057                                   &x, NULL, NULL);
4058
4059   gtk_tree_view_get_visible_rect (tree_view, &visible_rect);
4060
4061   /* See if we are near the edge. */
4062   offset = x - (visible_rect.x + SCROLL_EDGE_SIZE);
4063   if (offset > 0)
4064     {
4065       offset = x - (visible_rect.x + visible_rect.width - SCROLL_EDGE_SIZE);
4066       if (offset < 0)
4067         return TRUE;
4068     }
4069   offset = offset/3;
4070
4071   gtk_adjustment_set_value (tree_view->priv->hadjustment,
4072                             MAX (gtk_adjustment_get_value (tree_view->priv->hadjustment) + offset, 0.0));
4073
4074   return TRUE;
4075
4076 }
4077
4078 static gboolean
4079 gtk_tree_view_motion_drag_column (GtkWidget      *widget,
4080                                   GdkEventMotion *event)
4081 {
4082   GtkAllocation allocation, button_allocation;
4083   GtkTreeView *tree_view = (GtkTreeView *) widget;
4084   GtkTreeViewColumn *column = tree_view->priv->drag_column;
4085   GtkWidget *button;
4086   gint x, y;
4087
4088   /* Sanity Check */
4089   if ((column == NULL) ||
4090       (event->window != tree_view->priv->drag_window))
4091     return FALSE;
4092
4093   button = gtk_tree_view_column_get_button (column);
4094
4095   /* Handle moving the header */
4096   gdk_window_get_position (tree_view->priv->drag_window, &x, &y);
4097   gtk_widget_get_allocation (widget, &allocation);
4098   gtk_widget_get_allocation (button, &button_allocation);
4099   x = CLAMP (x + (gint)event->x - _gtk_tree_view_column_get_drag_x (column), 0,
4100              MAX (tree_view->priv->width, allocation.width) - button_allocation.width);
4101   gdk_window_move (tree_view->priv->drag_window, x, y);
4102
4103   /* autoscroll, if needed */
4104   gtk_tree_view_horizontal_autoscroll (tree_view, (GdkEvent *) event);
4105   /* Update the current reorder position and arrow; */
4106   gtk_tree_view_update_current_reorder (tree_view, (GdkEvent *) event);
4107
4108   return TRUE;
4109 }
4110
4111 static void
4112 gtk_tree_view_stop_rubber_band (GtkTreeView *tree_view)
4113 {
4114   remove_scroll_timeout (tree_view);
4115   gtk_grab_remove (GTK_WIDGET (tree_view));
4116
4117   if (tree_view->priv->rubber_band_status == RUBBER_BAND_ACTIVE)
4118     {
4119       GtkTreePath *tmp_path;
4120
4121       gtk_widget_queue_draw (GTK_WIDGET (tree_view));
4122
4123       /* The anchor path should be set to the start path */
4124       tmp_path = _gtk_tree_path_new_from_rbtree (tree_view->priv->rubber_band_start_tree,
4125                                                  tree_view->priv->rubber_band_start_node);
4126
4127       if (tree_view->priv->anchor)
4128         gtk_tree_row_reference_free (tree_view->priv->anchor);
4129
4130       tree_view->priv->anchor =
4131         gtk_tree_row_reference_new_proxy (G_OBJECT (tree_view),
4132                                           tree_view->priv->model,
4133                                           tmp_path);
4134
4135       gtk_tree_path_free (tmp_path);
4136
4137       /* ... and the cursor to the end path */
4138       tmp_path = _gtk_tree_path_new_from_rbtree (tree_view->priv->rubber_band_end_tree,
4139                                                  tree_view->priv->rubber_band_end_node);
4140       gtk_tree_view_real_set_cursor (GTK_TREE_VIEW (tree_view), tmp_path, 0);
4141       gtk_tree_path_free (tmp_path);
4142
4143       _gtk_tree_selection_emit_changed (tree_view->priv->selection);
4144     }
4145
4146   /* Clear status variables */
4147   tree_view->priv->rubber_band_status = RUBBER_BAND_OFF;
4148   tree_view->priv->rubber_band_extend = FALSE;
4149   tree_view->priv->rubber_band_modify = FALSE;
4150
4151   tree_view->priv->rubber_band_start_node = NULL;
4152   tree_view->priv->rubber_band_start_tree = NULL;
4153   tree_view->priv->rubber_band_end_node = NULL;
4154   tree_view->priv->rubber_band_end_tree = NULL;
4155 }
4156
4157 static void
4158 gtk_tree_view_update_rubber_band_selection_range (GtkTreeView *tree_view,
4159                                                  GtkRBTree   *start_tree,
4160                                                  GtkRBNode   *start_node,
4161                                                  GtkRBTree   *end_tree,
4162                                                  GtkRBNode   *end_node,
4163                                                  gboolean     select,
4164                                                  gboolean     skip_start,
4165                                                  gboolean     skip_end)
4166 {
4167   if (start_node == end_node)
4168     return;
4169
4170   /* We skip the first node and jump inside the loop */
4171   if (skip_start)
4172     goto skip_first;
4173
4174   do
4175     {
4176       /* Small optimization by assuming insensitive nodes are never
4177        * selected.
4178        */
4179       if (!GTK_RBNODE_FLAG_SET (start_node, GTK_RBNODE_IS_SELECTED))
4180         {
4181           GtkTreePath *path;
4182           gboolean selectable;
4183
4184           path = _gtk_tree_path_new_from_rbtree (start_tree, start_node);
4185           selectable = _gtk_tree_selection_row_is_selectable (tree_view->priv->selection, start_node, path);
4186           gtk_tree_path_free (path);
4187
4188           if (!selectable)
4189             goto node_not_selectable;
4190         }
4191
4192       if (select)
4193         {
4194           if (tree_view->priv->rubber_band_extend)
4195             GTK_RBNODE_SET_FLAG (start_node, GTK_RBNODE_IS_SELECTED);
4196           else if (tree_view->priv->rubber_band_modify)
4197             {
4198               /* Toggle the selection state */
4199               if (GTK_RBNODE_FLAG_SET (start_node, GTK_RBNODE_IS_SELECTED))
4200                 GTK_RBNODE_UNSET_FLAG (start_node, GTK_RBNODE_IS_SELECTED);
4201               else
4202                 GTK_RBNODE_SET_FLAG (start_node, GTK_RBNODE_IS_SELECTED);
4203             }
4204           else
4205             GTK_RBNODE_SET_FLAG (start_node, GTK_RBNODE_IS_SELECTED);
4206         }
4207       else
4208         {
4209           /* Mirror the above */
4210           if (tree_view->priv->rubber_band_extend)
4211             GTK_RBNODE_UNSET_FLAG (start_node, GTK_RBNODE_IS_SELECTED);
4212           else if (tree_view->priv->rubber_band_modify)
4213             {
4214               /* Toggle the selection state */
4215               if (GTK_RBNODE_FLAG_SET (start_node, GTK_RBNODE_IS_SELECTED))
4216                 GTK_RBNODE_UNSET_FLAG (start_node, GTK_RBNODE_IS_SELECTED);
4217               else
4218                 GTK_RBNODE_SET_FLAG (start_node, GTK_RBNODE_IS_SELECTED);
4219             }
4220           else
4221             GTK_RBNODE_UNSET_FLAG (start_node, GTK_RBNODE_IS_SELECTED);
4222         }
4223
4224       _gtk_tree_view_queue_draw_node (tree_view, start_tree, start_node, NULL);
4225
4226 node_not_selectable:
4227       if (start_node == end_node)
4228         break;
4229
4230 skip_first:
4231
4232       if (start_node->children)
4233         {
4234           start_tree = start_node->children;
4235           start_node = _gtk_rbtree_first (start_tree);
4236         }
4237       else
4238         {
4239           _gtk_rbtree_next_full (start_tree, start_node, &start_tree, &start_node);
4240
4241           if (!start_tree)
4242             /* Ran out of tree */
4243             break;
4244         }
4245
4246       if (skip_end && start_node == end_node)
4247         break;
4248     }
4249   while (TRUE);
4250 }
4251
4252 static void
4253 gtk_tree_view_update_rubber_band_selection (GtkTreeView *tree_view)
4254 {
4255   GtkRBTree *start_tree, *end_tree;
4256   GtkRBNode *start_node, *end_node;
4257
4258   _gtk_rbtree_find_offset (tree_view->priv->tree, MIN (tree_view->priv->press_start_y, tree_view->priv->rubber_band_y), &start_tree, &start_node);
4259   _gtk_rbtree_find_offset (tree_view->priv->tree, MAX (tree_view->priv->press_start_y, tree_view->priv->rubber_band_y), &end_tree, &end_node);
4260
4261   /* Handle the start area first */
4262   if (!tree_view->priv->rubber_band_start_node)
4263     {
4264       gtk_tree_view_update_rubber_band_selection_range (tree_view,
4265                                                        start_tree,
4266                                                        start_node,
4267                                                        end_tree,
4268                                                        end_node,
4269                                                        TRUE,
4270                                                        FALSE,
4271                                                        FALSE);
4272     }
4273   else if (_gtk_rbtree_node_find_offset (start_tree, start_node) <
4274            _gtk_rbtree_node_find_offset (tree_view->priv->rubber_band_start_tree, tree_view->priv->rubber_band_start_node))
4275     {
4276       /* New node is above the old one; selection became bigger */
4277       gtk_tree_view_update_rubber_band_selection_range (tree_view,
4278                                                        start_tree,
4279                                                        start_node,
4280                                                        tree_view->priv->rubber_band_start_tree,
4281                                                        tree_view->priv->rubber_band_start_node,
4282                                                        TRUE,
4283                                                        FALSE,
4284                                                        TRUE);
4285     }
4286   else if (_gtk_rbtree_node_find_offset (start_tree, start_node) >
4287            _gtk_rbtree_node_find_offset (tree_view->priv->rubber_band_start_tree, tree_view->priv->rubber_band_start_node))
4288     {
4289       /* New node is below the old one; selection became smaller */
4290       gtk_tree_view_update_rubber_band_selection_range (tree_view,
4291                                                        tree_view->priv->rubber_band_start_tree,
4292                                                        tree_view->priv->rubber_band_start_node,
4293                                                        start_tree,
4294                                                        start_node,
4295                                                        FALSE,
4296                                                        FALSE,
4297                                                        TRUE);
4298     }
4299
4300   tree_view->priv->rubber_band_start_tree = start_tree;
4301   tree_view->priv->rubber_band_start_node = start_node;
4302
4303   /* Next, handle the end area */
4304   if (!tree_view->priv->rubber_band_end_node)
4305     {
4306       /* In the event this happens, start_node was also NULL; this case is
4307        * handled above.
4308        */
4309     }
4310   else if (!end_node)
4311     {
4312       /* Find the last node in the tree */
4313       _gtk_rbtree_find_offset (tree_view->priv->tree, tree_view->priv->height - 1,
4314                                &end_tree, &end_node);
4315
4316       /* Selection reached end of the tree */
4317       gtk_tree_view_update_rubber_band_selection_range (tree_view,
4318                                                        tree_view->priv->rubber_band_end_tree,
4319                                                        tree_view->priv->rubber_band_end_node,
4320                                                        end_tree,
4321                                                        end_node,
4322                                                        TRUE,
4323                                                        TRUE,
4324                                                        FALSE);
4325     }
4326   else if (_gtk_rbtree_node_find_offset (end_tree, end_node) >
4327            _gtk_rbtree_node_find_offset (tree_view->priv->rubber_band_end_tree, tree_view->priv->rubber_band_end_node))
4328     {
4329       /* New node is below the old one; selection became bigger */
4330       gtk_tree_view_update_rubber_band_selection_range (tree_view,
4331                                                        tree_view->priv->rubber_band_end_tree,
4332                                                        tree_view->priv->rubber_band_end_node,
4333                                                        end_tree,
4334                                                        end_node,
4335                                                        TRUE,
4336                                                        TRUE,
4337                                                        FALSE);
4338     }
4339   else if (_gtk_rbtree_node_find_offset (end_tree, end_node) <
4340            _gtk_rbtree_node_find_offset (tree_view->priv->rubber_band_end_tree, tree_view->priv->rubber_band_end_node))
4341     {
4342       /* New node is above the old one; selection became smaller */
4343       gtk_tree_view_update_rubber_band_selection_range (tree_view,
4344                                                        end_tree,
4345                                                        end_node,
4346                                                        tree_view->priv->rubber_band_end_tree,
4347                                                        tree_view->priv->rubber_band_end_node,
4348                                                        FALSE,
4349                                                        TRUE,
4350                                                        FALSE);
4351     }
4352
4353   tree_view->priv->rubber_band_end_tree = end_tree;
4354   tree_view->priv->rubber_band_end_node = end_node;
4355 }
4356
4357 static void
4358 gtk_tree_view_update_rubber_band (GtkTreeView *tree_view)
4359 {
4360   gint x, y;
4361   GdkRectangle old_area;
4362   GdkRectangle new_area;
4363   GdkRectangle common;
4364   cairo_region_t *invalid_region;
4365
4366   old_area.x = MIN (tree_view->priv->press_start_x, tree_view->priv->rubber_band_x);
4367   old_area.y = MIN (tree_view->priv->press_start_y, tree_view->priv->rubber_band_y) - tree_view->priv->dy;
4368   old_area.width = ABS (tree_view->priv->rubber_band_x - tree_view->priv->press_start_x) + 1;
4369   old_area.height = ABS (tree_view->priv->rubber_band_y - tree_view->priv->press_start_y) + 1;
4370
4371   gdk_window_get_device_position (tree_view->priv->bin_window,
4372                                   gdk_device_manager_get_client_pointer (
4373                                     gdk_display_get_device_manager (
4374                                       gtk_widget_get_display (GTK_WIDGET (tree_view)))),
4375                                   &x, &y, NULL);
4376
4377   x = MAX (x, 0);
4378   y = MAX (y, 0) + tree_view->priv->dy;
4379
4380   new_area.x = MIN (tree_view->priv->press_start_x, x);
4381   new_area.y = MIN (tree_view->priv->press_start_y, y) - tree_view->priv->dy;
4382   new_area.width = ABS (x - tree_view->priv->press_start_x) + 1;
4383   new_area.height = ABS (y - tree_view->priv->press_start_y) + 1;
4384
4385   invalid_region = cairo_region_create_rectangle (&old_area);
4386   cairo_region_union_rectangle (invalid_region, &new_area);
4387
4388   gdk_rectangle_intersect (&old_area, &new_area, &common);
4389   if (common.width > 2 && common.height > 2)
4390     {
4391       cairo_region_t *common_region;
4392
4393       /* make sure the border is invalidated */
4394       common.x += 1;
4395       common.y += 1;
4396       common.width -= 2;
4397       common.height -= 2;
4398
4399       common_region = cairo_region_create_rectangle (&common);
4400
4401       cairo_region_subtract (invalid_region, common_region);
4402       cairo_region_destroy (common_region);
4403     }
4404
4405   gdk_window_invalidate_region (tree_view->priv->bin_window, invalid_region, TRUE);
4406
4407   cairo_region_destroy (invalid_region);
4408
4409   tree_view->priv->rubber_band_x = x;
4410   tree_view->priv->rubber_band_y = y;
4411
4412   gtk_tree_view_update_rubber_band_selection (tree_view);
4413 }
4414
4415 static void
4416 gtk_tree_view_paint_rubber_band (GtkTreeView  *tree_view,
4417                                  cairo_t      *cr)
4418 {
4419   GdkRectangle rect;
4420   GtkStyleContext *context;
4421
4422   cairo_save (cr);
4423
4424   context = gtk_widget_get_style_context (GTK_WIDGET (tree_view));
4425
4426   gtk_style_context_save (context);
4427   gtk_style_context_add_class (context, GTK_STYLE_CLASS_RUBBERBAND);
4428
4429   rect.x = MIN (tree_view->priv->press_start_x, tree_view->priv->rubber_band_x);
4430   rect.y = MIN (tree_view->priv->press_start_y, tree_view->priv->rubber_band_y) - tree_view->priv->dy;
4431   rect.width = ABS (tree_view->priv->press_start_x - tree_view->priv->rubber_band_x) + 1;
4432   rect.height = ABS (tree_view->priv->press_start_y - tree_view->priv->rubber_band_y) + 1;
4433
4434   gdk_cairo_rectangle (cr, &rect);
4435   cairo_clip (cr);
4436
4437   gtk_render_background (context, cr,
4438                          rect.x, rect.y,
4439                          rect.width, rect.height);
4440   gtk_render_frame (context, cr,
4441                     rect.x, rect.y,
4442                     rect.width, rect.height);
4443
4444   gtk_style_context_restore (context);
4445   cairo_restore (cr);
4446 }
4447
4448 static gboolean
4449 gtk_tree_view_motion_bin_window (GtkWidget      *widget,
4450                                  GdkEventMotion *event)
4451 {
4452   GtkTreeView *tree_view;
4453   GtkRBTree *tree;
4454   GtkRBNode *node;
4455   gint new_y;
4456
4457   tree_view = (GtkTreeView *) widget;
4458
4459   if (tree_view->priv->tree == NULL)
4460     return FALSE;
4461
4462   if (tree_view->priv->rubber_band_status == RUBBER_BAND_MAYBE_START)
4463     {
4464       gtk_grab_add (GTK_WIDGET (tree_view));
4465       gtk_tree_view_update_rubber_band (tree_view);
4466
4467       tree_view->priv->rubber_band_status = RUBBER_BAND_ACTIVE;
4468     }
4469   else if (tree_view->priv->rubber_band_status == RUBBER_BAND_ACTIVE)
4470     {
4471       gtk_tree_view_update_rubber_band (tree_view);
4472
4473       add_scroll_timeout (tree_view);
4474     }
4475
4476   /* only check for an initiated drag when a button is pressed */
4477   if (tree_view->priv->pressed_button >= 0
4478       && !tree_view->priv->rubber_band_status)
4479     gtk_tree_view_maybe_begin_dragging_row (tree_view, event);
4480
4481   new_y = TREE_WINDOW_Y_TO_RBTREE_Y(tree_view, event->y);
4482   if (new_y < 0)
4483     new_y = 0;
4484
4485   _gtk_rbtree_find_offset (tree_view->priv->tree, new_y, &tree, &node);
4486
4487   /* If we are currently pressing down a button, we don't want to prelight anything else. */
4488   if ((tree_view->priv->button_pressed_node != NULL) &&
4489       (tree_view->priv->button_pressed_node != node))
4490     node = NULL;
4491
4492   tree_view->priv->event_last_x = event->x;
4493   tree_view->priv->event_last_y = event->y;
4494
4495   prelight_or_select (tree_view, tree, node, event->x, event->y);
4496
4497   return TRUE;
4498 }
4499
4500 static gboolean
4501 gtk_tree_view_motion (GtkWidget      *widget,
4502                       GdkEventMotion *event)
4503 {
4504   GtkTreeView *tree_view;
4505
4506   tree_view = (GtkTreeView *) widget;
4507
4508   /* Resizing a column */
4509   if (tree_view->priv->in_column_resize)
4510     return gtk_tree_view_motion_resize_column (widget, event);
4511
4512   /* Drag column */
4513   if (tree_view->priv->in_column_drag)
4514     return gtk_tree_view_motion_drag_column (widget, event);
4515
4516   /* Sanity check it */
4517   if (event->window == tree_view->priv->bin_window)
4518     return gtk_tree_view_motion_bin_window (widget, event);
4519
4520   return FALSE;
4521 }
4522
4523 /* Invalidate the focus rectangle near the edge of the bin_window; used when
4524  * the tree is empty.
4525  */
4526 static void
4527 invalidate_empty_focus (GtkTreeView *tree_view)
4528 {
4529   GdkRectangle area;
4530
4531   if (!gtk_widget_has_focus (GTK_WIDGET (tree_view)))
4532     return;
4533
4534   area.x = 0;
4535   area.y = 0;
4536   area.width = gdk_window_get_width (tree_view->priv->bin_window);
4537   area.height = gdk_window_get_height (tree_view->priv->bin_window);
4538   gdk_window_invalidate_rect (tree_view->priv->bin_window, &area, FALSE);
4539 }
4540
4541 /* Draws a focus rectangle near the edge of the bin_window; used when the tree
4542  * is empty.
4543  */
4544 static void
4545 draw_empty_focus (GtkTreeView *tree_view, cairo_t *cr)
4546 {
4547   GtkWidget *widget = GTK_WIDGET (tree_view);
4548   gint w, h;
4549
4550   if (!gtk_widget_has_visible_focus (widget))
4551     return;
4552
4553   w = gdk_window_get_width (tree_view->priv->bin_window) - 2;
4554   h = gdk_window_get_height (tree_view->priv->bin_window) - 2;
4555
4556   if (w > 0 && h > 0)
4557     {
4558       GtkStyleContext *context;
4559
4560       context = gtk_widget_get_style_context (widget);
4561
4562       gtk_render_focus (context, cr, 1, 1, w, h);
4563     }
4564 }
4565
4566 typedef enum {
4567   GTK_TREE_VIEW_GRID_LINE,
4568   GTK_TREE_VIEW_TREE_LINE,
4569   GTK_TREE_VIEW_FOREGROUND_LINE
4570 } GtkTreeViewLineType;
4571
4572 static void
4573 gtk_tree_view_draw_line (GtkTreeView         *tree_view,
4574                          cairo_t             *cr,
4575                          GtkTreeViewLineType  type,
4576                          int                  x1,
4577                          int                  y1,
4578                          int                  x2,
4579                          int                  y2)
4580 {
4581   cairo_save (cr);
4582
4583   switch (type)
4584     {
4585     case GTK_TREE_VIEW_TREE_LINE:
4586       cairo_set_source_rgb (cr, 0, 0, 0);
4587       cairo_set_line_width (cr, tree_view->priv->tree_line_width);
4588       if (tree_view->priv->tree_line_dashes[0])
4589         cairo_set_dash (cr,
4590                         tree_view->priv->tree_line_dashes,
4591                         2, 0.5);
4592       break;
4593     case GTK_TREE_VIEW_GRID_LINE:
4594       cairo_set_source_rgb (cr, 0, 0, 0);
4595       cairo_set_line_width (cr, tree_view->priv->grid_line_width);
4596       if (tree_view->priv->grid_line_dashes[0])
4597         cairo_set_dash (cr,
4598                         tree_view->priv->grid_line_dashes,
4599                         2, 0.5);
4600       break;
4601     default:
4602       g_assert_not_reached ();
4603       /* fall through */
4604     case GTK_TREE_VIEW_FOREGROUND_LINE:
4605       {
4606         GtkStyleContext *context;
4607         GtkStateFlags state;
4608         GdkRGBA color;
4609
4610         context = gtk_widget_get_style_context (GTK_WIDGET (tree_view));
4611         state = gtk_widget_get_state_flags (GTK_WIDGET (tree_view));
4612
4613         cairo_set_line_width (cr, 1.0);
4614         gtk_style_context_get_color (context, state, &color);
4615         gdk_cairo_set_source_rgba (cr, &color);
4616       }
4617
4618       break;
4619     }
4620
4621   cairo_move_to (cr, x1 + 0.5, y1 + 0.5);
4622   cairo_line_to (cr, x2 + 0.5, y2 + 0.5);
4623   cairo_stroke (cr);
4624
4625   cairo_restore (cr);
4626 }
4627
4628 static void
4629 gtk_tree_view_draw_grid_lines (GtkTreeView    *tree_view,
4630                                cairo_t        *cr,
4631                                gint            n_visible_columns)
4632 {
4633   GList *list = tree_view->priv->columns;
4634   gint i = 0;
4635   gint current_x = 0;
4636
4637   if (tree_view->priv->grid_lines != GTK_TREE_VIEW_GRID_LINES_VERTICAL
4638       && tree_view->priv->grid_lines != GTK_TREE_VIEW_GRID_LINES_BOTH)
4639     return;
4640
4641   /* Only draw the lines for visible rows and columns */
4642   for (list = tree_view->priv->columns; list; list = list->next, i++)
4643     {
4644       GtkTreeViewColumn *column = list->data;
4645
4646       /* We don't want a line for the last column */
4647       if (i == n_visible_columns - 1)
4648         break;
4649
4650       if (!gtk_tree_view_column_get_visible (column))
4651         continue;
4652
4653       current_x += gtk_tree_view_column_get_width (column);
4654
4655       gtk_tree_view_draw_line (tree_view, cr,
4656                                GTK_TREE_VIEW_GRID_LINE,
4657                                current_x - 1, 0,
4658                                current_x - 1, tree_view->priv->height);
4659     }
4660 }
4661
4662 /* Warning: Very scary function.
4663  * Modify at your own risk
4664  *
4665  * KEEP IN SYNC WITH gtk_tree_view_create_row_drag_icon()!
4666  * FIXME: It's not...
4667  */
4668 static gboolean
4669 gtk_tree_view_bin_draw (GtkWidget      *widget,
4670                         cairo_t        *cr)
4671 {
4672   GtkTreeView *tree_view = GTK_TREE_VIEW (widget);
4673   GtkTreePath *path;
4674   GtkRBTree *tree;
4675   GList *list;
4676   GtkRBNode *node;
4677   GtkRBNode *drag_highlight = NULL;
4678   GtkRBTree *drag_highlight_tree = NULL;
4679   GtkTreeIter iter;
4680   gint new_y;
4681   gint y_offset, cell_offset;
4682   gint max_height;
4683   gint depth;
4684   GdkRectangle background_area;
4685   GdkRectangle cell_area;
4686   GdkRectangle clip;
4687   guint flags;
4688   gint highlight_x;
4689   gint expander_cell_width;
4690   gint bin_window_width;
4691   gint bin_window_height;
4692   GtkTreePath *drag_dest_path;
4693   GList *first_column, *last_column;
4694   gint vertical_separator;
4695   gint horizontal_separator;
4696   gint focus_line_width;
4697   gboolean allow_rules;
4698   gboolean has_can_focus_cell;
4699   gboolean rtl;
4700   gint n_visible_columns;
4701   gint grid_line_width;
4702   gboolean draw_vgrid_lines, draw_hgrid_lines;
4703   GtkStyleContext *context;
4704   gboolean parity;
4705
4706   rtl = (gtk_widget_get_direction (widget) == GTK_TEXT_DIR_RTL);
4707   context = gtk_widget_get_style_context (widget);
4708
4709   gtk_widget_style_get (widget,
4710                         "horizontal-separator", &horizontal_separator,
4711                         "vertical-separator", &vertical_separator,
4712                         "allow-rules", &allow_rules,
4713                         "focus-line-width", &focus_line_width,
4714                         NULL);
4715
4716   if (tree_view->priv->tree == NULL)
4717     {
4718       draw_empty_focus (tree_view, cr);
4719       return TRUE;
4720     }
4721
4722   bin_window_width = gdk_window_get_width (tree_view->priv->bin_window);
4723   bin_window_height = gdk_window_get_height (tree_view->priv->bin_window);
4724   cairo_rectangle (cr, 0, 0, bin_window_width, bin_window_height);
4725   cairo_clip (cr);
4726   if (!gdk_cairo_get_clip_rectangle (cr, &clip))
4727     return TRUE;
4728
4729   new_y = TREE_WINDOW_Y_TO_RBTREE_Y (tree_view, clip.y);
4730
4731   if (new_y < 0)
4732     new_y = 0;
4733   y_offset = -_gtk_rbtree_find_offset (tree_view->priv->tree, new_y, &tree, &node);
4734
4735   if (tree_view->priv->height < bin_window_height)
4736     {
4737       gtk_style_context_save (context);
4738       gtk_style_context_add_class (context, GTK_STYLE_CLASS_CELL);
4739
4740       gtk_render_background (context, cr,
4741                              0, tree_view->priv->height,
4742                              bin_window_width,
4743                              bin_window_height - tree_view->priv->height);
4744
4745       gtk_style_context_restore (context);
4746     }
4747
4748   if (node == NULL)
4749     return TRUE;
4750
4751   /* find the path for the node */
4752   path = _gtk_tree_path_new_from_rbtree (tree, node);
4753   gtk_tree_model_get_iter (tree_view->priv->model,
4754                            &iter,
4755                            path);
4756   depth = gtk_tree_path_get_depth (path);
4757   gtk_tree_path_free (path);
4758
4759   drag_dest_path = NULL;
4760
4761   if (tree_view->priv->drag_dest_row)
4762     drag_dest_path = gtk_tree_row_reference_get_path (tree_view->priv->drag_dest_row);
4763
4764   if (drag_dest_path)
4765     _gtk_tree_view_find_node (tree_view, drag_dest_path,
4766                               &drag_highlight_tree, &drag_highlight);
4767
4768   draw_vgrid_lines =
4769     tree_view->priv->grid_lines == GTK_TREE_VIEW_GRID_LINES_VERTICAL
4770     || tree_view->priv->grid_lines == GTK_TREE_VIEW_GRID_LINES_BOTH;
4771   draw_hgrid_lines =
4772     tree_view->priv->grid_lines == GTK_TREE_VIEW_GRID_LINES_HORIZONTAL
4773     || tree_view->priv->grid_lines == GTK_TREE_VIEW_GRID_LINES_BOTH;
4774
4775   if (draw_vgrid_lines || draw_hgrid_lines)
4776     gtk_widget_style_get (widget, "grid-line-width", &grid_line_width, NULL);
4777
4778   n_visible_columns = 0;
4779   for (list = tree_view->priv->columns; list; list = list->next)
4780     {
4781       if (!gtk_tree_view_column_get_visible (GTK_TREE_VIEW_COLUMN (list->data)))
4782         continue;
4783       n_visible_columns ++;
4784     }
4785
4786   /* Find the last column */
4787   for (last_column = g_list_last (tree_view->priv->columns);
4788        last_column &&
4789        !(gtk_tree_view_column_get_visible (GTK_TREE_VIEW_COLUMN (last_column->data)));
4790        last_column = last_column->prev)
4791     ;
4792
4793   /* and the first */
4794   for (first_column = g_list_first (tree_view->priv->columns);
4795        first_column &&
4796        !(gtk_tree_view_column_get_visible (GTK_TREE_VIEW_COLUMN (first_column->data)));
4797        first_column = first_column->next)
4798     ;
4799
4800   /* Actually process the expose event.  To do this, we want to
4801    * start at the first node of the event, and walk the tree in
4802    * order, drawing each successive node.
4803    */
4804
4805   parity = !(_gtk_rbtree_node_get_index (tree, node) % 2);
4806
4807   do
4808     {
4809       gboolean is_separator = FALSE;
4810       gboolean is_first = FALSE;
4811       gboolean is_last = FALSE;
4812       gint n_col = 0;
4813
4814       parity = !parity;
4815       is_separator = row_is_separator (tree_view, &iter, NULL);
4816
4817       max_height = gtk_tree_view_get_row_height (tree_view, node);
4818
4819       cell_offset = 0;
4820       highlight_x = 0; /* should match x coord of first cell */
4821       expander_cell_width = 0;
4822
4823       background_area.y = y_offset + clip.y;
4824       background_area.height = max_height;
4825
4826       flags = 0;
4827
4828       if (GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_PRELIT))
4829         flags |= GTK_CELL_RENDERER_PRELIT;
4830
4831       if (GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_SELECTED))
4832         flags |= GTK_CELL_RENDERER_SELECTED;
4833
4834       /* we *need* to set cell data on all cells before the call
4835        * to _has_can_focus_cell, else _has_can_focus_cell() does not
4836        * return a correct value.
4837        */
4838       for (list = (rtl ? g_list_last (tree_view->priv->columns) : g_list_first (tree_view->priv->columns));
4839            list;
4840            list = (rtl ? list->prev : list->next))
4841         {
4842           GtkTreeViewColumn *column = list->data;
4843           gtk_tree_view_column_cell_set_cell_data (column,
4844                                                    tree_view->priv->model,
4845                                                    &iter,
4846                                                    GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_PARENT),
4847                                                    node->children?TRUE:FALSE);
4848         }
4849
4850       has_can_focus_cell = gtk_tree_view_has_can_focus_cell (tree_view);
4851
4852       for (list = (rtl ? g_list_last (tree_view->priv->columns) : g_list_first (tree_view->priv->columns));
4853            list;
4854            list = (rtl ? list->prev : list->next))
4855         {
4856           GtkTreeViewColumn *column = list->data;
4857           GtkRegionFlags row_flags = 0, column_flags = 0;
4858           GtkStateFlags state = 0;
4859           gint width;
4860           gboolean draw_focus;
4861
4862           if (!gtk_tree_view_column_get_visible (column))
4863             continue;
4864
4865           n_col++;
4866           width = gtk_tree_view_column_get_width (column);
4867
4868           if (cell_offset > clip.x + clip.width ||
4869               cell_offset + width < clip.x)
4870             {
4871               cell_offset += width;
4872               continue;
4873             }
4874
4875           if (gtk_tree_view_column_get_sort_indicator (column))
4876             flags |= GTK_CELL_RENDERER_SORTED;
4877           else
4878             flags &= ~GTK_CELL_RENDERER_SORTED;
4879
4880           if (tree_view->priv->cursor_node == node)
4881             flags |= GTK_CELL_RENDERER_FOCUSED;
4882           else
4883             flags &= ~GTK_CELL_RENDERER_FOCUSED;
4884
4885           if (GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_PARENT))
4886             flags |= GTK_CELL_RENDERER_EXPANDABLE;
4887           else
4888             flags &= ~GTK_CELL_RENDERER_EXPANDABLE;
4889
4890           if (node->children)
4891             flags |= GTK_CELL_RENDERER_EXPANDED;
4892           else
4893             flags &= ~GTK_CELL_RENDERER_EXPANDED;
4894
4895           background_area.x = cell_offset;
4896           background_area.width = width;
4897
4898           cell_area = background_area;
4899           cell_area.y += vertical_separator / 2;
4900           cell_area.x += horizontal_separator / 2;
4901           cell_area.height -= vertical_separator;
4902           cell_area.width -= horizontal_separator;
4903
4904           if (draw_vgrid_lines)
4905             {
4906               if (list == first_column)
4907                 {
4908                   cell_area.width -= grid_line_width / 2;
4909                 }
4910               else if (list == last_column)
4911                 {
4912                   cell_area.x += grid_line_width / 2;
4913                   cell_area.width -= grid_line_width / 2;
4914                 }
4915               else
4916                 {
4917                   cell_area.x += grid_line_width / 2;
4918                   cell_area.width -= grid_line_width;
4919                 }
4920             }
4921
4922           if (draw_hgrid_lines)
4923             {
4924               cell_area.y += grid_line_width / 2;
4925               cell_area.height -= grid_line_width;
4926             }
4927
4928           if (!gdk_rectangle_intersect (&clip, &background_area, NULL))
4929             {
4930               cell_offset += gtk_tree_view_column_get_width (column);
4931               continue;
4932             }
4933
4934           gtk_tree_view_column_cell_set_cell_data (column,
4935                                                    tree_view->priv->model,
4936                                                    &iter,
4937                                                    GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_PARENT),
4938                                                    node->children?TRUE:FALSE);
4939
4940           /* Select the detail for drawing the cell.  relevant
4941            * factors are parity, sortedness, and whether to
4942            * display rules.
4943            */
4944           if (allow_rules && tree_view->priv->has_rules)
4945             {
4946               if (parity)
4947                 row_flags |= GTK_REGION_ODD;
4948               else
4949                 row_flags |= GTK_REGION_EVEN;
4950             }
4951
4952           if ((flags & GTK_CELL_RENDERER_SORTED) &&
4953               n_visible_columns >= 3)
4954             column_flags |= GTK_REGION_SORTED;
4955
4956           is_first = (rtl ? !list->next : !list->prev);
4957           is_last = (rtl ? !list->prev : !list->next);
4958
4959           if (is_first)
4960             column_flags |= GTK_REGION_FIRST;
4961
4962           if (is_last)
4963             column_flags |= GTK_REGION_LAST;
4964
4965           if ((n_col % 2) == 0)
4966             column_flags |= GTK_REGION_EVEN;
4967           else
4968             column_flags |= GTK_REGION_ODD;
4969
4970           gtk_style_context_save (context);
4971
4972           state = gtk_cell_renderer_get_state (NULL, widget, flags);
4973           gtk_style_context_set_state (context, state);
4974
4975           gtk_style_context_add_class (context, GTK_STYLE_CLASS_CELL);
4976           gtk_style_context_add_region (context, GTK_STYLE_REGION_ROW, row_flags);
4977           gtk_style_context_add_region (context, GTK_STYLE_REGION_COLUMN, column_flags);
4978
4979           if (node == tree_view->priv->cursor_node && has_can_focus_cell
4980               && ((column == tree_view->priv->focus_column
4981                    && tree_view->priv->draw_keyfocus &&
4982                    gtk_widget_has_visible_focus (widget))
4983                   || (column == tree_view->priv->edited_column)))
4984             draw_focus = TRUE;
4985           else
4986             draw_focus = FALSE;
4987
4988           /* Draw background */
4989           gtk_render_background (context, cr,
4990                                  background_area.x,
4991                                  background_area.y,
4992                                  background_area.width,
4993                                  background_area.height);
4994
4995           /* Draw frame */
4996           gtk_render_frame (context, cr,
4997                             background_area.x,
4998                             background_area.y,
4999                             background_area.width,
5000                             background_area.height);
5001
5002           if (gtk_tree_view_is_expander_column (tree_view, column))
5003             {
5004               if (!rtl)
5005                 cell_area.x += (depth - 1) * tree_view->priv->level_indentation;
5006               cell_area.width -= (depth - 1) * tree_view->priv->level_indentation;
5007
5008               if (gtk_tree_view_draw_expanders (tree_view))
5009                 {
5010                   if (!rtl)
5011                     cell_area.x += depth * tree_view->priv->expander_size;
5012                   cell_area.width -= depth * tree_view->priv->expander_size;
5013                 }
5014
5015               /* If we have an expander column, the highlight underline
5016                * starts with that column, so that it indicates which
5017                * level of the tree we're dropping at.
5018                */
5019               highlight_x = cell_area.x;
5020               expander_cell_width = cell_area.width;
5021
5022               if (is_separator)
5023                 {
5024                   gtk_style_context_save (context);
5025                   gtk_style_context_add_class (context, GTK_STYLE_CLASS_SEPARATOR);
5026
5027                   gtk_render_line (context, cr,
5028                                    cell_area.x,
5029                                    cell_area.y + cell_area.height / 2,
5030                                    cell_area.x + cell_area.width,
5031                                    cell_area.y + cell_area.height / 2);
5032
5033                   gtk_style_context_restore (context);
5034                 }
5035               else
5036                 {
5037                   _gtk_tree_view_column_cell_render (column,
5038                                                      cr,
5039                                                      &background_area,
5040                                                      &cell_area,
5041                                                      flags,
5042                                                      draw_focus);
5043                 }
5044
5045               if (gtk_tree_view_draw_expanders (tree_view)
5046                   && (node->flags & GTK_RBNODE_IS_PARENT) == GTK_RBNODE_IS_PARENT)
5047                 {
5048                   gtk_tree_view_draw_arrow (GTK_TREE_VIEW (widget),
5049                                             cr,
5050                                             tree,
5051                                             node);
5052                 }
5053             }
5054           else
5055             {
5056               if (is_separator)
5057                 {
5058                   gtk_style_context_save (context);
5059                   gtk_style_context_add_class (context, GTK_STYLE_CLASS_SEPARATOR);
5060
5061                   gtk_render_line (context, cr,
5062                                    cell_area.x,
5063                                    cell_area.y + cell_area.height / 2,
5064                                    cell_area.x + cell_area.width,
5065                                    cell_area.y + cell_area.height / 2);
5066
5067                   gtk_style_context_restore (context);
5068                 }
5069               else
5070                 _gtk_tree_view_column_cell_render (column,
5071                                                    cr,
5072                                                    &background_area,
5073                                                    &cell_area,
5074                                                    flags,
5075                                                    draw_focus);
5076             }
5077
5078           if (draw_hgrid_lines)
5079             {
5080               if (background_area.y > 0)
5081                 gtk_tree_view_draw_line (tree_view, cr,
5082                                          GTK_TREE_VIEW_GRID_LINE,
5083                                          background_area.x, background_area.y,
5084                                          background_area.x + background_area.width,
5085                                          background_area.y);
5086
5087               if (y_offset + max_height >= clip.height)
5088                 gtk_tree_view_draw_line (tree_view, cr,
5089                                          GTK_TREE_VIEW_GRID_LINE,
5090                                          background_area.x, background_area.y + max_height,
5091                                          background_area.x + background_area.width,
5092                                          background_area.y + max_height);
5093             }
5094
5095           if (gtk_tree_view_is_expander_column (tree_view, column) &&
5096               tree_view->priv->tree_lines_enabled)
5097             {
5098               gint x = background_area.x;
5099               gint mult = rtl ? -1 : 1;
5100               gint y0 = background_area.y;
5101               gint y1 = background_area.y + background_area.height/2;
5102               gint y2 = background_area.y + background_area.height;
5103
5104               if (rtl)
5105                 x += background_area.width - 1;
5106
5107               if ((node->flags & GTK_RBNODE_IS_PARENT) == GTK_RBNODE_IS_PARENT
5108                   && depth > 1)
5109                 {
5110                   gtk_tree_view_draw_line (tree_view, cr,
5111                                            GTK_TREE_VIEW_TREE_LINE,
5112                                            x + tree_view->priv->expander_size * (depth - 1.5) * mult,
5113                                            y1,
5114                                            x + tree_view->priv->expander_size * (depth - 1.1) * mult,
5115                                            y1);
5116                 }
5117               else if (depth > 1)
5118                 {
5119                   gtk_tree_view_draw_line (tree_view, cr,
5120                                            GTK_TREE_VIEW_TREE_LINE,
5121                                            x + tree_view->priv->expander_size * (depth - 1.5) * mult,
5122                                            y1,
5123                                            x + tree_view->priv->expander_size * (depth - 0.5) * mult,
5124                                            y1);
5125                 }
5126
5127               if (depth > 1)
5128                 {
5129                   gint i;
5130                   GtkRBNode *tmp_node;
5131                   GtkRBTree *tmp_tree;
5132
5133                   if (!_gtk_rbtree_next (tree, node))
5134                     gtk_tree_view_draw_line (tree_view, cr,
5135                                              GTK_TREE_VIEW_TREE_LINE,
5136                                              x + tree_view->priv->expander_size * (depth - 1.5) * mult,
5137                                              y0,
5138                                              x + tree_view->priv->expander_size * (depth - 1.5) * mult,
5139                                              y1);
5140                   else
5141                     gtk_tree_view_draw_line (tree_view, cr,
5142                                              GTK_TREE_VIEW_TREE_LINE,
5143                                              x + tree_view->priv->expander_size * (depth - 1.5) * mult,
5144                                              y0,
5145                                              x + tree_view->priv->expander_size * (depth - 1.5) * mult,
5146                                              y2);
5147
5148                   tmp_node = tree->parent_node;
5149                   tmp_tree = tree->parent_tree;
5150
5151                   for (i = depth - 2; i > 0; i--)
5152                     {
5153                       if (_gtk_rbtree_next (tmp_tree, tmp_node))
5154                         gtk_tree_view_draw_line (tree_view, cr,
5155                                                  GTK_TREE_VIEW_TREE_LINE,
5156                                                  x + tree_view->priv->expander_size * (i - 0.5) * mult,
5157                                                  y0,
5158                                                  x + tree_view->priv->expander_size * (i - 0.5) * mult,
5159                                                  y2);
5160
5161                       tmp_node = tmp_tree->parent_node;
5162                       tmp_tree = tmp_tree->parent_tree;
5163                     }
5164                 }
5165             }
5166
5167           gtk_style_context_restore (context);
5168           cell_offset += gtk_tree_view_column_get_width (column);
5169         }
5170
5171       if (node == drag_highlight)
5172         {
5173           /* Draw indicator for the drop
5174            */
5175           gint highlight_y = -1;
5176           GtkRBTree *tree = NULL;
5177           GtkRBNode *node = NULL;
5178
5179           switch (tree_view->priv->drag_dest_pos)
5180             {
5181             case GTK_TREE_VIEW_DROP_BEFORE:
5182               highlight_y = background_area.y - 1;
5183               if (highlight_y < 0)
5184                       highlight_y = 0;
5185               break;
5186
5187             case GTK_TREE_VIEW_DROP_AFTER:
5188               highlight_y = background_area.y + background_area.height - 1;
5189               break;
5190
5191             case GTK_TREE_VIEW_DROP_INTO_OR_BEFORE:
5192             case GTK_TREE_VIEW_DROP_INTO_OR_AFTER:
5193               _gtk_tree_view_find_node (tree_view, drag_dest_path, &tree, &node);
5194
5195               if (tree == NULL)
5196                 break;
5197
5198               gtk_render_focus (context, cr,
5199                                 0, gtk_tree_view_get_row_y_offset (tree_view, tree, node)
5200                                    - focus_line_width / 2,
5201                                 gdk_window_get_width (tree_view->priv->bin_window),
5202                                 gtk_tree_view_get_row_height (tree_view, node)
5203                                    - focus_line_width + 1);
5204               break;
5205             }
5206
5207           if (highlight_y >= 0)
5208             {
5209               gtk_tree_view_draw_line (tree_view, cr,
5210                                        GTK_TREE_VIEW_FOREGROUND_LINE,
5211                                        rtl ? highlight_x + expander_cell_width : highlight_x,
5212                                        highlight_y,
5213                                        rtl ? 0 : bin_window_width,
5214                                        highlight_y);
5215             }
5216         }
5217
5218       /* draw the big row-spanning focus rectangle, if needed */
5219       if (!has_can_focus_cell && node == tree_view->priv->cursor_node &&
5220           tree_view->priv->draw_keyfocus &&
5221           gtk_widget_has_visible_focus (widget))
5222         {
5223           gint tmp_y, tmp_height;
5224           GtkStateFlags focus_rect_state = 0;
5225
5226           gtk_style_context_save (context);
5227
5228           focus_rect_state = gtk_cell_renderer_get_state (NULL, widget, flags);
5229           gtk_style_context_set_state (context, focus_rect_state);
5230
5231           if (draw_hgrid_lines)
5232             {
5233               tmp_y = gtk_tree_view_get_row_y_offset (tree_view, tree, node) + grid_line_width / 2;
5234               tmp_height = gtk_tree_view_get_row_height (tree_view, node) - grid_line_width;
5235             }
5236           else
5237             {
5238               tmp_y = gtk_tree_view_get_row_y_offset (tree_view, tree, node);
5239               tmp_height = gtk_tree_view_get_row_height (tree_view, node);
5240             }
5241
5242           gtk_render_focus (context, cr,
5243                             0, tmp_y,
5244                             gdk_window_get_width (tree_view->priv->bin_window),
5245                             tmp_height);
5246
5247           gtk_style_context_restore (context);
5248         }
5249
5250       y_offset += max_height;
5251       if (node->children)
5252         {
5253           GtkTreeIter parent = iter;
5254           gboolean has_child;
5255
5256           tree = node->children;
5257           node = _gtk_rbtree_first (tree);
5258
5259           has_child = gtk_tree_model_iter_children (tree_view->priv->model,
5260                                                     &iter,
5261                                                     &parent);
5262           depth++;
5263
5264           /* Sanity Check! */
5265           TREE_VIEW_INTERNAL_ASSERT (has_child, FALSE);
5266         }
5267       else
5268         {
5269           gboolean done = FALSE;
5270
5271           do
5272             {
5273               node = _gtk_rbtree_next (tree, node);
5274               if (node != NULL)
5275                 {
5276                   gboolean has_next = gtk_tree_model_iter_next (tree_view->priv->model, &iter);
5277                   done = TRUE;
5278
5279                   /* Sanity Check! */
5280                   TREE_VIEW_INTERNAL_ASSERT (has_next, FALSE);
5281                 }
5282               else
5283                 {
5284                   GtkTreeIter parent_iter = iter;
5285                   gboolean has_parent;
5286
5287                   node = tree->parent_node;
5288                   tree = tree->parent_tree;
5289                   if (tree == NULL)
5290                     /* we should go to done to free some memory */
5291                     goto done;
5292                   has_parent = gtk_tree_model_iter_parent (tree_view->priv->model,
5293                                                            &iter,
5294                                                            &parent_iter);
5295                   depth--;
5296
5297                   /* Sanity check */
5298                   TREE_VIEW_INTERNAL_ASSERT (has_parent, FALSE);
5299                 }
5300             }
5301           while (!done);
5302         }
5303     }
5304   while (y_offset < clip.height);
5305
5306 done:
5307   gtk_tree_view_draw_grid_lines (tree_view, cr, n_visible_columns);
5308
5309   if (tree_view->priv->rubber_band_status == RUBBER_BAND_ACTIVE)
5310     gtk_tree_view_paint_rubber_band (tree_view, cr);
5311
5312   if (drag_dest_path)
5313     gtk_tree_path_free (drag_dest_path);
5314
5315   return FALSE;
5316 }
5317
5318 static gboolean
5319 gtk_tree_view_draw (GtkWidget *widget,
5320                     cairo_t   *cr)
5321 {
5322   GtkTreeView *tree_view = GTK_TREE_VIEW (widget);
5323   GtkWidget   *button;
5324
5325   if (gtk_cairo_should_draw_window (cr, tree_view->priv->bin_window))
5326     {
5327       GtkStyleContext *context;
5328       GList *tmp_list;
5329
5330       context = gtk_widget_get_style_context (widget);
5331
5332       cairo_save (cr);
5333
5334       gtk_style_context_save (context);
5335       gtk_style_context_add_class (context, GTK_STYLE_CLASS_VIEW);
5336
5337       gtk_cairo_transform_to_window (cr, widget, tree_view->priv->bin_window);
5338
5339       gtk_tree_view_bin_draw (widget, cr);
5340
5341       gtk_style_context_restore (context);
5342       cairo_restore (cr);
5343
5344       /* We can't just chain up to Container::draw as it will try to send the
5345        * event to the headers, so we handle propagating it to our children
5346        * (eg. widgets being edited) ourselves.
5347        */
5348       tmp_list = tree_view->priv->children;
5349       while (tmp_list)
5350         {
5351           GtkTreeViewChild *child = tmp_list->data;
5352           tmp_list = tmp_list->next;
5353
5354           gtk_container_propagate_draw (GTK_CONTAINER (tree_view), child->widget, cr);
5355         }
5356     }
5357
5358   if (gtk_cairo_should_draw_window (cr, tree_view->priv->header_window))
5359     {
5360       GList *list;
5361
5362       for (list = tree_view->priv->columns; list != NULL; list = list->next)
5363         {
5364           GtkTreeViewColumn *column = list->data;
5365
5366           if (column == tree_view->priv->drag_column)
5367             continue;
5368
5369           if (gtk_tree_view_column_get_visible (column))
5370             {
5371               button = gtk_tree_view_column_get_button (column);
5372               gtk_container_propagate_draw (GTK_CONTAINER (tree_view),
5373                                             button, cr);
5374             }
5375         }
5376     }
5377
5378   if (tree_view->priv->drag_window &&
5379       gtk_cairo_should_draw_window (cr, tree_view->priv->drag_window))
5380     {
5381       button = gtk_tree_view_column_get_button (tree_view->priv->drag_column);
5382       gtk_container_propagate_draw (GTK_CONTAINER (tree_view),
5383                                     button, cr);
5384     }
5385
5386   return FALSE;
5387 }
5388
5389 enum
5390 {
5391   DROP_HOME,
5392   DROP_RIGHT,
5393   DROP_LEFT,
5394   DROP_END
5395 };
5396
5397 /* returns 0x1 when no column has been found -- yes it's hackish */
5398 static GtkTreeViewColumn *
5399 gtk_tree_view_get_drop_column (GtkTreeView       *tree_view,
5400                                GtkTreeViewColumn *column,
5401                                gint               drop_position)
5402 {
5403   GtkTreeViewColumn *left_column = NULL;
5404   GtkTreeViewColumn *cur_column = NULL;
5405   GList *tmp_list;
5406
5407   if (!gtk_tree_view_column_get_reorderable (column))
5408     return (GtkTreeViewColumn *)0x1;
5409
5410   switch (drop_position)
5411     {
5412       case DROP_HOME:
5413         /* find first column where we can drop */
5414         tmp_list = tree_view->priv->columns;
5415         if (column == GTK_TREE_VIEW_COLUMN (tmp_list->data))
5416           return (GtkTreeViewColumn *)0x1;
5417
5418         while (tmp_list)
5419           {
5420             g_assert (tmp_list);
5421
5422             cur_column = GTK_TREE_VIEW_COLUMN (tmp_list->data);
5423             tmp_list = tmp_list->next;
5424
5425             if (left_column &&
5426                 gtk_tree_view_column_get_visible (left_column) == FALSE)
5427               continue;
5428
5429             if (!tree_view->priv->column_drop_func)
5430               return left_column;
5431
5432             if (!tree_view->priv->column_drop_func (tree_view, column, left_column, cur_column, tree_view->priv->column_drop_func_data))
5433               {
5434                 left_column = cur_column;
5435                 continue;
5436               }
5437
5438             return left_column;
5439           }
5440
5441         if (!tree_view->priv->column_drop_func)
5442           return left_column;
5443
5444         if (tree_view->priv->column_drop_func (tree_view, column, left_column, NULL, tree_view->priv->column_drop_func_data))
5445           return left_column;
5446         else
5447           return (GtkTreeViewColumn *)0x1;
5448         break;
5449
5450       case DROP_RIGHT:
5451         /* find first column after column where we can drop */
5452         tmp_list = tree_view->priv->columns;
5453
5454         for (; tmp_list; tmp_list = tmp_list->next)
5455           if (GTK_TREE_VIEW_COLUMN (tmp_list->data) == column)
5456             break;
5457
5458         if (!tmp_list || !tmp_list->next)
5459           return (GtkTreeViewColumn *)0x1;
5460
5461         tmp_list = tmp_list->next;
5462         left_column = GTK_TREE_VIEW_COLUMN (tmp_list->data);
5463         tmp_list = tmp_list->next;
5464
5465         while (tmp_list)
5466           {
5467             g_assert (tmp_list);
5468
5469             cur_column = GTK_TREE_VIEW_COLUMN (tmp_list->data);
5470             tmp_list = tmp_list->next;
5471
5472             if (left_column &&
5473                 gtk_tree_view_column_get_visible (left_column) == FALSE)
5474               {
5475                 left_column = cur_column;
5476                 if (tmp_list)
5477                   tmp_list = tmp_list->next;
5478                 continue;
5479               }
5480
5481             if (!tree_view->priv->column_drop_func)
5482               return left_column;
5483
5484             if (!tree_view->priv->column_drop_func (tree_view, column, left_column, cur_column, tree_view->priv->column_drop_func_data))
5485               {
5486                 left_column = cur_column;
5487                 continue;
5488               }
5489
5490             return left_column;
5491           }
5492
5493         if (!tree_view->priv->column_drop_func)
5494           return left_column;
5495
5496         if (tree_view->priv->column_drop_func (tree_view, column, left_column, NULL, tree_view->priv->column_drop_func_data))
5497           return left_column;
5498         else
5499           return (GtkTreeViewColumn *)0x1;
5500         break;
5501
5502       case DROP_LEFT:
5503         /* find first column before column where we can drop */
5504         tmp_list = tree_view->priv->columns;
5505
5506         for (; tmp_list; tmp_list = tmp_list->next)
5507           if (GTK_TREE_VIEW_COLUMN (tmp_list->data) == column)
5508             break;
5509
5510         if (!tmp_list || !tmp_list->prev)
5511           return (GtkTreeViewColumn *)0x1;
5512
5513         tmp_list = tmp_list->prev;
5514         cur_column = GTK_TREE_VIEW_COLUMN (tmp_list->data);
5515         tmp_list = tmp_list->prev;
5516
5517         while (tmp_list)
5518           {
5519             g_assert (tmp_list);
5520
5521             left_column = GTK_TREE_VIEW_COLUMN (tmp_list->data);
5522
5523             if (left_column &&
5524                 gtk_tree_view_column_get_visible (left_column) == FALSE)
5525               {
5526                 /*if (!tmp_list->prev)
5527                   return (GtkTreeViewColumn *)0x1;
5528                   */
5529 /*
5530                 cur_column = GTK_TREE_VIEW_COLUMN (tmp_list->prev->data);
5531                 tmp_list = tmp_list->prev->prev;
5532                 continue;*/
5533
5534                 cur_column = left_column;
5535                 if (tmp_list)
5536                   tmp_list = tmp_list->prev;
5537                 continue;
5538               }
5539
5540             if (!tree_view->priv->column_drop_func)
5541               return left_column;
5542
5543             if (tree_view->priv->column_drop_func (tree_view, column, left_column, cur_column, tree_view->priv->column_drop_func_data))
5544               return left_column;
5545
5546             cur_column = left_column;
5547             tmp_list = tmp_list->prev;
5548           }
5549
5550         if (!tree_view->priv->column_drop_func)
5551           return NULL;
5552
5553         if (tree_view->priv->column_drop_func (tree_view, column, NULL, cur_column, tree_view->priv->column_drop_func_data))
5554           return NULL;
5555         else
5556           return (GtkTreeViewColumn *)0x1;
5557         break;
5558
5559       case DROP_END:
5560         /* same as DROP_HOME case, but doing it backwards */
5561         tmp_list = g_list_last (tree_view->priv->columns);
5562         cur_column = NULL;
5563
5564         if (column == GTK_TREE_VIEW_COLUMN (tmp_list->data))
5565           return (GtkTreeViewColumn *)0x1;
5566
5567         while (tmp_list)
5568           {
5569             g_assert (tmp_list);
5570
5571             left_column = GTK_TREE_VIEW_COLUMN (tmp_list->data);
5572
5573             if (left_column &&
5574                 gtk_tree_view_column_get_visible (left_column) == FALSE)
5575               {
5576                 cur_column = left_column;
5577                 tmp_list = tmp_list->prev;
5578               }
5579
5580             if (!tree_view->priv->column_drop_func)
5581               return left_column;
5582
5583             if (tree_view->priv->column_drop_func (tree_view, column, left_column, cur_column, tree_view->priv->column_drop_func_data))
5584               return left_column;
5585
5586             cur_column = left_column;
5587             tmp_list = tmp_list->prev;
5588           }
5589
5590         if (!tree_view->priv->column_drop_func)
5591           return NULL;
5592
5593         if (tree_view->priv->column_drop_func (tree_view, column, NULL, cur_column, tree_view->priv->column_drop_func_data))
5594           return NULL;
5595         else
5596           return (GtkTreeViewColumn *)0x1;
5597         break;
5598     }
5599
5600   return (GtkTreeViewColumn *)0x1;
5601 }
5602
5603 static gboolean
5604 gtk_tree_view_key_press (GtkWidget   *widget,
5605                          GdkEventKey *event)
5606 {
5607   GtkTreeView *tree_view = (GtkTreeView *) widget;
5608   GtkWidget   *button;
5609
5610   if (tree_view->priv->rubber_band_status)
5611     {
5612       if (event->keyval == GDK_KEY_Escape)
5613         gtk_tree_view_stop_rubber_band (tree_view);
5614
5615       return TRUE;
5616     }
5617
5618   if (tree_view->priv->in_column_drag)
5619     {
5620       if (event->keyval == GDK_KEY_Escape)
5621         {
5622           tree_view->priv->cur_reorder = NULL;
5623           gtk_tree_view_button_release_drag_column (widget, NULL);
5624         }
5625       return TRUE;
5626     }
5627
5628   if (tree_view->priv->headers_visible)
5629     {
5630       GList *focus_column;
5631       gboolean rtl;
5632
5633       rtl = (gtk_widget_get_direction (GTK_WIDGET (tree_view)) == GTK_TEXT_DIR_RTL);
5634
5635       for (focus_column = tree_view->priv->columns;
5636            focus_column;
5637            focus_column = focus_column->next)
5638         {
5639           GtkTreeViewColumn *column = GTK_TREE_VIEW_COLUMN (focus_column->data);
5640
5641           button = gtk_tree_view_column_get_button (column);
5642           if (gtk_widget_has_focus (button))
5643             break;
5644         }
5645
5646       if (focus_column &&
5647           (event->state & GDK_SHIFT_MASK) && (event->state & GDK_MOD1_MASK) &&
5648           (event->keyval == GDK_KEY_Left || event->keyval == GDK_KEY_KP_Left
5649            || event->keyval == GDK_KEY_Right || event->keyval == GDK_KEY_KP_Right))
5650         {
5651           GtkTreeViewColumn *column = GTK_TREE_VIEW_COLUMN (focus_column->data);
5652           gint max_width, min_width;
5653
5654           if (!gtk_tree_view_column_get_resizable (column))
5655             {
5656               gtk_widget_error_bell (widget);
5657               return TRUE;
5658             }
5659
5660           if (event->keyval == (rtl ? GDK_KEY_Right : GDK_KEY_Left)
5661               || event->keyval == (rtl ? GDK_KEY_KP_Right : GDK_KEY_KP_Left))
5662             {
5663               GtkRequisition button_req;
5664               gint old_width = _gtk_tree_view_column_get_resized_width (column);
5665               gint new_width;
5666
5667               button = gtk_tree_view_column_get_button (column);
5668
5669               gtk_widget_get_preferred_size (button, &button_req, NULL);
5670
5671               new_width = MAX (old_width, gtk_tree_view_column_get_width (column));
5672               new_width -= 2;
5673               if (new_width < 0)
5674                 new_width = 0;
5675
5676               _gtk_tree_view_column_set_resized_width (column, new_width);
5677
5678               min_width = gtk_tree_view_column_get_min_width (column);
5679               if (min_width == -1)
5680                 new_width = MAX (button_req.width, new_width);
5681               else
5682                 {
5683                   new_width = MAX (min_width, new_width);
5684                 }
5685
5686               max_width = gtk_tree_view_column_get_max_width (column);
5687               if (max_width != -1)
5688                 new_width = MIN (new_width, max_width);
5689
5690               _gtk_tree_view_column_set_use_resized_width (column, TRUE);
5691
5692               if (new_width != old_width)
5693                 {
5694                   _gtk_tree_view_column_set_resized_width (column, new_width);
5695                   gtk_widget_queue_resize (widget);
5696                 }
5697               else
5698                 gtk_widget_error_bell (widget);
5699             }
5700           else if (event->keyval == (rtl ? GDK_KEY_Left : GDK_KEY_Right)
5701                    || event->keyval == (rtl ? GDK_KEY_KP_Left : GDK_KEY_KP_Right))
5702             {
5703               gint old_width = _gtk_tree_view_column_get_resized_width (column);
5704               gint new_width;
5705
5706               new_width = MAX (old_width, gtk_tree_view_column_get_width (column));
5707               new_width += 2;
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
5724           return TRUE;
5725         }
5726
5727       if (focus_column &&
5728           (event->state & GDK_MOD1_MASK) &&
5729           (event->keyval == GDK_KEY_Left || event->keyval == GDK_KEY_KP_Left
5730            || event->keyval == GDK_KEY_Right || event->keyval == GDK_KEY_KP_Right
5731            || event->keyval == GDK_KEY_Home || event->keyval == GDK_KEY_KP_Home
5732            || event->keyval == GDK_KEY_End || event->keyval == GDK_KEY_KP_End))
5733         {
5734           GtkTreeViewColumn *column = GTK_TREE_VIEW_COLUMN (focus_column->data);
5735
5736           if (event->keyval == (rtl ? GDK_KEY_Right : GDK_KEY_Left)
5737               || event->keyval == (rtl ? GDK_KEY_KP_Right : GDK_KEY_KP_Left))
5738             {
5739               GtkTreeViewColumn *col;
5740               col = gtk_tree_view_get_drop_column (tree_view, column, DROP_LEFT);
5741               if (col != (GtkTreeViewColumn *)0x1)
5742                 gtk_tree_view_move_column_after (tree_view, column, col);
5743               else
5744                 gtk_widget_error_bell (widget);
5745             }
5746           else if (event->keyval == (rtl ? GDK_KEY_Left : GDK_KEY_Right)
5747                    || event->keyval == (rtl ? GDK_KEY_KP_Left : GDK_KEY_KP_Right))
5748             {
5749               GtkTreeViewColumn *col;
5750               col = gtk_tree_view_get_drop_column (tree_view, column, DROP_RIGHT);
5751               if (col != (GtkTreeViewColumn *)0x1)
5752                 gtk_tree_view_move_column_after (tree_view, column, col);
5753               else
5754                 gtk_widget_error_bell (widget);
5755             }
5756           else if (event->keyval == GDK_KEY_Home || event->keyval == GDK_KEY_KP_Home)
5757             {
5758               GtkTreeViewColumn *col;
5759               col = gtk_tree_view_get_drop_column (tree_view, column, DROP_HOME);
5760               if (col != (GtkTreeViewColumn *)0x1)
5761                 gtk_tree_view_move_column_after (tree_view, column, col);
5762               else
5763                 gtk_widget_error_bell (widget);
5764             }
5765           else if (event->keyval == GDK_KEY_End || event->keyval == GDK_KEY_KP_End)
5766             {
5767               GtkTreeViewColumn *col;
5768               col = gtk_tree_view_get_drop_column (tree_view, column, DROP_END);
5769               if (col != (GtkTreeViewColumn *)0x1)
5770                 gtk_tree_view_move_column_after (tree_view, column, col);
5771               else
5772                 gtk_widget_error_bell (widget);
5773             }
5774
5775           return TRUE;
5776         }
5777     }
5778
5779   /* Chain up to the parent class.  It handles the keybindings. */
5780   if (GTK_WIDGET_CLASS (gtk_tree_view_parent_class)->key_press_event (widget, event))
5781     return TRUE;
5782
5783   if (tree_view->priv->search_entry_avoid_unhandled_binding)
5784     {
5785       tree_view->priv->search_entry_avoid_unhandled_binding = FALSE;
5786       return FALSE;
5787     }
5788
5789   /* We pass the event to the search_entry.  If its text changes, then we start
5790    * the typeahead find capabilities. */
5791   if (gtk_widget_has_focus (GTK_WIDGET (tree_view))
5792       && tree_view->priv->enable_search
5793       && !tree_view->priv->search_custom_entry_set)
5794     {
5795       GdkEvent *new_event;
5796       char *old_text;
5797       const char *new_text;
5798       gboolean retval;
5799       GdkScreen *screen;
5800       gboolean text_modified;
5801       gulong popup_menu_id;
5802
5803       gtk_tree_view_ensure_interactive_directory (tree_view);
5804
5805       /* Make a copy of the current text */
5806       old_text = g_strdup (gtk_entry_get_text (GTK_ENTRY (tree_view->priv->search_entry)));
5807       new_event = gdk_event_copy ((GdkEvent *) event);
5808       g_object_unref (((GdkEventKey *) new_event)->window);
5809       ((GdkEventKey *) new_event)->window = g_object_ref (gtk_widget_get_window (tree_view->priv->search_window));
5810       gtk_widget_realize (tree_view->priv->search_window);
5811
5812       popup_menu_id = g_signal_connect (tree_view->priv->search_entry,
5813                                         "popup-menu", G_CALLBACK (gtk_true),
5814                                         NULL);
5815
5816       /* Move the entry off screen */
5817       screen = gtk_widget_get_screen (GTK_WIDGET (tree_view));
5818       gtk_window_move (GTK_WINDOW (tree_view->priv->search_window),
5819                        gdk_screen_get_width (screen) + 1,
5820                        gdk_screen_get_height (screen) + 1);
5821       gtk_widget_show (tree_view->priv->search_window);
5822
5823       /* Send the event to the window.  If the preedit_changed signal is emitted
5824        * during this event, we will set priv->imcontext_changed  */
5825       tree_view->priv->imcontext_changed = FALSE;
5826       retval = gtk_widget_event (tree_view->priv->search_window, new_event);
5827       gdk_event_free (new_event);
5828       gtk_widget_hide (tree_view->priv->search_window);
5829
5830       g_signal_handler_disconnect (tree_view->priv->search_entry,
5831                                    popup_menu_id);
5832
5833       /* We check to make sure that the entry tried to handle the text, and that
5834        * the text has changed.
5835        */
5836       new_text = gtk_entry_get_text (GTK_ENTRY (tree_view->priv->search_entry));
5837       text_modified = strcmp (old_text, new_text) != 0;
5838       g_free (old_text);
5839       if (tree_view->priv->imcontext_changed ||    /* we're in a preedit */
5840           (retval && text_modified))               /* ...or the text was modified */
5841         {
5842           if (gtk_tree_view_real_start_interactive_search (tree_view,
5843                                                            gdk_event_get_device ((GdkEvent *) event),
5844                                                            FALSE))
5845             {
5846               gtk_widget_grab_focus (GTK_WIDGET (tree_view));
5847               return TRUE;
5848             }
5849           else
5850             {
5851               gtk_entry_set_text (GTK_ENTRY (tree_view->priv->search_entry), "");
5852               return FALSE;
5853             }
5854         }
5855     }
5856
5857   return FALSE;
5858 }
5859
5860 static gboolean
5861 gtk_tree_view_key_release (GtkWidget   *widget,
5862                            GdkEventKey *event)
5863 {
5864   GtkTreeView *tree_view = GTK_TREE_VIEW (widget);
5865
5866   if (tree_view->priv->rubber_band_status)
5867     return TRUE;
5868
5869   return GTK_WIDGET_CLASS (gtk_tree_view_parent_class)->key_release_event (widget, event);
5870 }
5871
5872 /* FIXME Is this function necessary? Can I get an enter_notify event
5873  * w/o either an expose event or a mouse motion event?
5874  */
5875 static gboolean
5876 gtk_tree_view_enter_notify (GtkWidget        *widget,
5877                             GdkEventCrossing *event)
5878 {
5879   GtkTreeView *tree_view = GTK_TREE_VIEW (widget);
5880   GtkRBTree *tree;
5881   GtkRBNode *node;
5882   gint new_y;
5883
5884   /* Sanity check it */
5885   if (event->window != tree_view->priv->bin_window)
5886     return FALSE;
5887
5888   if (tree_view->priv->tree == NULL)
5889     return FALSE;
5890
5891   if (event->mode == GDK_CROSSING_GRAB ||
5892       event->mode == GDK_CROSSING_GTK_GRAB ||
5893       event->mode == GDK_CROSSING_GTK_UNGRAB ||
5894       event->mode == GDK_CROSSING_STATE_CHANGED)
5895     return TRUE;
5896
5897   /* find the node internally */
5898   new_y = TREE_WINDOW_Y_TO_RBTREE_Y(tree_view, event->y);
5899   if (new_y < 0)
5900     new_y = 0;
5901   _gtk_rbtree_find_offset (tree_view->priv->tree, new_y, &tree, &node);
5902
5903   tree_view->priv->event_last_x = event->x;
5904   tree_view->priv->event_last_y = event->y;
5905
5906   if ((tree_view->priv->button_pressed_node == NULL) ||
5907       (tree_view->priv->button_pressed_node == node))
5908     prelight_or_select (tree_view, tree, node, event->x, event->y);
5909
5910   return TRUE;
5911 }
5912
5913 static gboolean
5914 gtk_tree_view_leave_notify (GtkWidget        *widget,
5915                             GdkEventCrossing *event)
5916 {
5917   GtkTreeView *tree_view;
5918
5919   if (event->mode == GDK_CROSSING_GRAB ||
5920       event->mode == GDK_CROSSING_GTK_GRAB ||
5921       event->mode == GDK_CROSSING_GTK_UNGRAB)
5922     return TRUE;
5923
5924   tree_view = GTK_TREE_VIEW (widget);
5925
5926   if (tree_view->priv->prelight_node)
5927     _gtk_tree_view_queue_draw_node (tree_view,
5928                                    tree_view->priv->prelight_tree,
5929                                    tree_view->priv->prelight_node,
5930                                    NULL);
5931
5932   tree_view->priv->event_last_x = -10000;
5933   tree_view->priv->event_last_y = -10000;
5934
5935   prelight_or_select (tree_view,
5936                       NULL, NULL,
5937                       -1000, -1000); /* coords not possibly over an arrow */
5938
5939   return TRUE;
5940 }
5941
5942
5943 static gint
5944 gtk_tree_view_focus_out (GtkWidget     *widget,
5945                          GdkEventFocus *event)
5946 {
5947   GtkTreeView *tree_view;
5948
5949   tree_view = GTK_TREE_VIEW (widget);
5950
5951   gtk_widget_queue_draw (widget);
5952
5953   /* destroy interactive search dialog */
5954   if (tree_view->priv->search_window)
5955     gtk_tree_view_search_dialog_hide (tree_view->priv->search_window, tree_view,
5956                                       gdk_event_get_device ((GdkEvent *) event));
5957
5958   return FALSE;
5959 }
5960
5961
5962 /* Incremental Reflow
5963  */
5964
5965 static void
5966 gtk_tree_view_node_queue_redraw (GtkTreeView *tree_view,
5967                                  GtkRBTree   *tree,
5968                                  GtkRBNode   *node)
5969 {
5970   GtkAllocation allocation;
5971   gint y;
5972
5973   y = _gtk_rbtree_node_find_offset (tree, node)
5974     - gtk_adjustment_get_value (tree_view->priv->vadjustment)
5975     + gtk_tree_view_get_effective_header_height (tree_view);
5976
5977   gtk_widget_get_allocation (GTK_WIDGET (tree_view), &allocation);
5978   gtk_widget_queue_draw_area (GTK_WIDGET (tree_view),
5979                               0, y,
5980                               allocation.width,
5981                               GTK_RBNODE_GET_HEIGHT (node));
5982 }
5983
5984 static gboolean
5985 node_is_visible (GtkTreeView *tree_view,
5986                  GtkRBTree   *tree,
5987                  GtkRBNode   *node)
5988 {
5989   int y;
5990   int height;
5991
5992   y = _gtk_rbtree_node_find_offset (tree, node);
5993   height = gtk_tree_view_get_row_height (tree_view, node);
5994
5995   if (y >= gtk_adjustment_get_value (tree_view->priv->vadjustment) &&
5996       y + height <= (gtk_adjustment_get_value (tree_view->priv->vadjustment)
5997                      + gtk_adjustment_get_page_size (tree_view->priv->vadjustment)))
5998     return TRUE;
5999
6000   return FALSE;
6001 }
6002
6003 /* Returns TRUE if it updated the size
6004  */
6005 static gboolean
6006 validate_row (GtkTreeView *tree_view,
6007               GtkRBTree   *tree,
6008               GtkRBNode   *node,
6009               GtkTreeIter *iter,
6010               GtkTreePath *path)
6011 {
6012   GtkTreeViewColumn *column;
6013   GList *list, *first_column, *last_column;
6014   gint height = 0;
6015   gint horizontal_separator;
6016   gint vertical_separator;
6017   gint depth = gtk_tree_path_get_depth (path);
6018   gboolean retval = FALSE;
6019   gboolean is_separator = FALSE;
6020   gboolean draw_vgrid_lines, draw_hgrid_lines;
6021   gint focus_pad;
6022   gint grid_line_width;
6023   gboolean wide_separators;
6024   gint separator_height;
6025
6026   /* double check the row needs validating */
6027   if (! GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_INVALID) &&
6028       ! GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_COLUMN_INVALID))
6029     return FALSE;
6030
6031   is_separator = row_is_separator (tree_view, iter, NULL);
6032
6033   gtk_widget_style_get (GTK_WIDGET (tree_view),
6034                         "focus-padding", &focus_pad,
6035                         "horizontal-separator", &horizontal_separator,
6036                         "vertical-separator", &vertical_separator,
6037                         "grid-line-width", &grid_line_width,
6038                         "wide-separators",  &wide_separators,
6039                         "separator-height", &separator_height,
6040                         NULL);
6041
6042   draw_vgrid_lines =
6043     tree_view->priv->grid_lines == GTK_TREE_VIEW_GRID_LINES_VERTICAL
6044     || tree_view->priv->grid_lines == GTK_TREE_VIEW_GRID_LINES_BOTH;
6045   draw_hgrid_lines =
6046     tree_view->priv->grid_lines == GTK_TREE_VIEW_GRID_LINES_HORIZONTAL
6047     || tree_view->priv->grid_lines == GTK_TREE_VIEW_GRID_LINES_BOTH;
6048
6049   for (last_column = g_list_last (tree_view->priv->columns);
6050        last_column &&
6051        !(gtk_tree_view_column_get_visible (GTK_TREE_VIEW_COLUMN (last_column->data)));
6052        last_column = last_column->prev)
6053     ;
6054
6055   for (first_column = g_list_first (tree_view->priv->columns);
6056        first_column &&
6057        !(gtk_tree_view_column_get_visible (GTK_TREE_VIEW_COLUMN (first_column->data)));
6058        first_column = first_column->next)
6059     ;
6060
6061   for (list = tree_view->priv->columns; list; list = list->next)
6062     {
6063       gint padding = 0;
6064       gint original_width;
6065       gint new_width;
6066       gint row_height;
6067
6068       column = list->data;
6069
6070       if (!gtk_tree_view_column_get_visible (column))
6071         continue;
6072
6073       if (GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_COLUMN_INVALID) &&
6074           !_gtk_tree_view_column_cell_get_dirty (column))
6075         continue;
6076
6077       original_width = _gtk_tree_view_column_get_requested_width (column);
6078
6079       gtk_tree_view_column_cell_set_cell_data (column, tree_view->priv->model, iter,
6080                                                GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_PARENT),
6081                                                node->children?TRUE:FALSE);
6082       gtk_tree_view_column_cell_get_size (column,
6083                                           NULL, NULL, NULL,
6084                                           NULL, &row_height);
6085
6086       if (!is_separator)
6087         {
6088           row_height += vertical_separator;
6089           height = MAX (height, row_height);
6090           height = MAX (height, tree_view->priv->expander_size);
6091         }
6092       else
6093         {
6094           if (wide_separators)
6095             height = separator_height + 2 * focus_pad;
6096           else
6097             height = 2 + 2 * focus_pad;
6098         }
6099
6100       if (gtk_tree_view_is_expander_column (tree_view, column))
6101         {
6102           padding += horizontal_separator + (depth - 1) * tree_view->priv->level_indentation;
6103
6104           if (gtk_tree_view_draw_expanders (tree_view))
6105             padding += depth * tree_view->priv->expander_size;
6106         }
6107       else
6108         padding += horizontal_separator;
6109
6110       if (draw_vgrid_lines)
6111         {
6112           if (list->data == first_column || list->data == last_column)
6113             padding += grid_line_width / 2.0;
6114           else
6115             padding += grid_line_width;
6116         }
6117
6118       /* Update the padding for the column */
6119       _gtk_tree_view_column_push_padding (column, padding);
6120       new_width = _gtk_tree_view_column_get_requested_width (column);
6121
6122       if (new_width > original_width)
6123         retval = TRUE;
6124     }
6125
6126   if (draw_hgrid_lines)
6127     height += grid_line_width;
6128
6129   if (height != GTK_RBNODE_GET_HEIGHT (node))
6130     {
6131       retval = TRUE;
6132       _gtk_rbtree_node_set_height (tree, node, height);
6133     }
6134   _gtk_rbtree_node_mark_valid (tree, node);
6135   tree_view->priv->post_validation_flag = TRUE;
6136
6137   return retval;
6138 }
6139
6140
6141 static void
6142 validate_visible_area (GtkTreeView *tree_view)
6143 {
6144   GtkAllocation allocation;
6145   GtkTreePath *path = NULL;
6146   GtkTreePath *above_path = NULL;
6147   GtkTreeIter iter;
6148   GtkRBTree *tree = NULL;
6149   GtkRBNode *node = NULL;
6150   gboolean need_redraw = FALSE;
6151   gboolean size_changed = FALSE;
6152   gint total_height;
6153   gint area_above = 0;
6154   gint area_below = 0;
6155
6156   if (tree_view->priv->tree == NULL)
6157     return;
6158
6159   if (! GTK_RBNODE_FLAG_SET (tree_view->priv->tree->root, GTK_RBNODE_DESCENDANTS_INVALID) &&
6160       tree_view->priv->scroll_to_path == NULL)
6161     return;
6162
6163   gtk_widget_get_allocation (GTK_WIDGET (tree_view), &allocation);
6164   total_height = allocation.height - gtk_tree_view_get_effective_header_height (tree_view);
6165
6166   if (total_height == 0)
6167     return;
6168
6169   /* First, we check to see if we need to scroll anywhere
6170    */
6171   if (tree_view->priv->scroll_to_path)
6172     {
6173       path = gtk_tree_row_reference_get_path (tree_view->priv->scroll_to_path);
6174       if (path && !_gtk_tree_view_find_node (tree_view, path, &tree, &node))
6175         {
6176           /* we are going to scroll, and will update dy */
6177           gtk_tree_model_get_iter (tree_view->priv->model, &iter, path);
6178           if (GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_INVALID) ||
6179               GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_COLUMN_INVALID))
6180             {
6181               _gtk_tree_view_queue_draw_node (tree_view, tree, node, NULL);
6182               if (validate_row (tree_view, tree, node, &iter, path))
6183                 size_changed = TRUE;
6184             }
6185
6186           if (tree_view->priv->scroll_to_use_align)
6187             {
6188               gint height = gtk_tree_view_get_row_height (tree_view, node);
6189               area_above = (total_height - height) *
6190                 tree_view->priv->scroll_to_row_align;
6191               area_below = total_height - area_above - height;
6192               area_above = MAX (area_above, 0);
6193               area_below = MAX (area_below, 0);
6194             }
6195           else
6196             {
6197               /* two cases:
6198                * 1) row not visible
6199                * 2) row visible
6200                */
6201               gint dy;
6202               gint height = gtk_tree_view_get_row_height (tree_view, node);
6203
6204               dy = _gtk_rbtree_node_find_offset (tree, node);
6205
6206               if (dy >= gtk_adjustment_get_value (tree_view->priv->vadjustment) &&
6207                   dy + height <= (gtk_adjustment_get_value (tree_view->priv->vadjustment)
6208                                   + gtk_adjustment_get_page_size (tree_view->priv->vadjustment)))
6209                 {
6210                   /* row visible: keep the row at the same position */
6211                   area_above = dy - gtk_adjustment_get_value (tree_view->priv->vadjustment);
6212                   area_below = (gtk_adjustment_get_value (tree_view->priv->vadjustment) +
6213                                 gtk_adjustment_get_page_size (tree_view->priv->vadjustment))
6214                                - dy - height;
6215                 }
6216               else
6217                 {
6218                   /* row not visible */
6219                   if (dy >= 0
6220                       && dy + height <= gtk_adjustment_get_page_size (tree_view->priv->vadjustment))
6221                     {
6222                       /* row at the beginning -- fixed */
6223                       area_above = dy;
6224                       area_below = gtk_adjustment_get_page_size (tree_view->priv->vadjustment)
6225                                    - area_above - height;
6226                     }
6227                   else if (dy >= (gtk_adjustment_get_upper (tree_view->priv->vadjustment) -
6228                                   gtk_adjustment_get_page_size (tree_view->priv->vadjustment)))
6229                     {
6230                       /* row at the end -- fixed */
6231                       area_above = dy - (gtk_adjustment_get_upper (tree_view->priv->vadjustment) -
6232                                    gtk_adjustment_get_page_size (tree_view->priv->vadjustment));
6233                       area_below = gtk_adjustment_get_page_size (tree_view->priv->vadjustment) -
6234                                    area_above - height;
6235
6236                       if (area_below < 0)
6237                         {
6238                           area_above = gtk_adjustment_get_page_size (tree_view->priv->vadjustment) - height;
6239                           area_below = 0;
6240                         }
6241                     }
6242                   else
6243                     {
6244                       /* row somewhere in the middle, bring it to the top
6245                        * of the view
6246                        */
6247                       area_above = 0;
6248                       area_below = total_height - height;
6249                     }
6250                 }
6251             }
6252         }
6253       else
6254         /* the scroll to isn't valid; ignore it.
6255          */
6256         {
6257           if (tree_view->priv->scroll_to_path && !path)
6258             {
6259               gtk_tree_row_reference_free (tree_view->priv->scroll_to_path);
6260               tree_view->priv->scroll_to_path = NULL;
6261             }
6262           if (path)
6263             gtk_tree_path_free (path);
6264           path = NULL;
6265         }
6266     }
6267
6268   /* We didn't have a scroll_to set, so we just handle things normally
6269    */
6270   if (path == NULL)
6271     {
6272       gint offset;
6273
6274       offset = _gtk_rbtree_find_offset (tree_view->priv->tree,
6275                                         TREE_WINDOW_Y_TO_RBTREE_Y (tree_view, 0),
6276                                         &tree, &node);
6277       if (node == NULL)
6278         {
6279           /* In this case, nothing has been validated */
6280           path = gtk_tree_path_new_first ();
6281           _gtk_tree_view_find_node (tree_view, path, &tree, &node);
6282         }
6283       else
6284         {
6285           path = _gtk_tree_path_new_from_rbtree (tree, node);
6286           total_height += offset;
6287         }
6288
6289       gtk_tree_model_get_iter (tree_view->priv->model, &iter, path);
6290
6291       if (GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_INVALID) ||
6292           GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_COLUMN_INVALID))
6293         {
6294           _gtk_tree_view_queue_draw_node (tree_view, tree, node, NULL);
6295           if (validate_row (tree_view, tree, node, &iter, path))
6296             size_changed = TRUE;
6297         }
6298       area_above = 0;
6299       area_below = total_height - gtk_tree_view_get_row_height (tree_view, node);
6300     }
6301
6302   above_path = gtk_tree_path_copy (path);
6303
6304   /* if we do not validate any row above the new top_row, we will make sure
6305    * that the row immediately above top_row has been validated. (if we do not
6306    * do this, _gtk_rbtree_find_offset will find the row above top_row, because
6307    * when invalidated that row's height will be zero. and this will mess up
6308    * scrolling).
6309    */
6310   if (area_above == 0)
6311     {
6312       GtkRBTree *tmptree;
6313       GtkRBNode *tmpnode;
6314
6315       _gtk_tree_view_find_node (tree_view, above_path, &tmptree, &tmpnode);
6316       _gtk_rbtree_prev_full (tmptree, tmpnode, &tmptree, &tmpnode);
6317
6318       if (tmpnode)
6319         {
6320           GtkTreePath *tmppath;
6321           GtkTreeIter tmpiter;
6322
6323           tmppath = _gtk_tree_path_new_from_rbtree (tmptree, tmpnode);
6324           gtk_tree_model_get_iter (tree_view->priv->model, &tmpiter, tmppath);
6325
6326           if (GTK_RBNODE_FLAG_SET (tmpnode, GTK_RBNODE_INVALID) ||
6327               GTK_RBNODE_FLAG_SET (tmpnode, GTK_RBNODE_COLUMN_INVALID))
6328             {
6329               _gtk_tree_view_queue_draw_node (tree_view, tmptree, tmpnode, NULL);
6330               if (validate_row (tree_view, tmptree, tmpnode, &tmpiter, tmppath))
6331                 size_changed = TRUE;
6332             }
6333
6334           gtk_tree_path_free (tmppath);
6335         }
6336     }
6337
6338   /* Now, we walk forwards and backwards, measuring rows. Unfortunately,
6339    * backwards is much slower then forward, as there is no iter_prev function.
6340    * We go forwards first in case we run out of tree.  Then we go backwards to
6341    * fill out the top.
6342    */
6343   while (node && area_below > 0)
6344     {
6345       if (node->children)
6346         {
6347           GtkTreeIter parent = iter;
6348           gboolean has_child;
6349
6350           tree = node->children;
6351           node = _gtk_rbtree_first (tree);
6352
6353           has_child = gtk_tree_model_iter_children (tree_view->priv->model,
6354                                                     &iter,
6355                                                     &parent);
6356           TREE_VIEW_INTERNAL_ASSERT_VOID (has_child);
6357           gtk_tree_path_down (path);
6358         }
6359       else
6360         {
6361           gboolean done = FALSE;
6362           do
6363             {
6364               node = _gtk_rbtree_next (tree, node);
6365               if (node != NULL)
6366                 {
6367                   gboolean has_next = gtk_tree_model_iter_next (tree_view->priv->model, &iter);
6368                   done = TRUE;
6369                   gtk_tree_path_next (path);
6370
6371                   /* Sanity Check! */
6372                   TREE_VIEW_INTERNAL_ASSERT_VOID (has_next);
6373                 }
6374               else
6375                 {
6376                   GtkTreeIter parent_iter = iter;
6377                   gboolean has_parent;
6378
6379                   node = tree->parent_node;
6380                   tree = tree->parent_tree;
6381                   if (tree == NULL)
6382                     break;
6383                   has_parent = gtk_tree_model_iter_parent (tree_view->priv->model,
6384                                                            &iter,
6385                                                            &parent_iter);
6386                   gtk_tree_path_up (path);
6387
6388                   /* Sanity check */
6389                   TREE_VIEW_INTERNAL_ASSERT_VOID (has_parent);
6390                 }
6391             }
6392           while (!done);
6393         }
6394
6395       if (!node)
6396         break;
6397
6398       if (GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_INVALID) ||
6399           GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_COLUMN_INVALID))
6400         {
6401           _gtk_tree_view_queue_draw_node (tree_view, tree, node, NULL);
6402           if (validate_row (tree_view, tree, node, &iter, path))
6403               size_changed = TRUE;
6404         }
6405
6406       area_below -= gtk_tree_view_get_row_height (tree_view, node);
6407     }
6408   gtk_tree_path_free (path);
6409
6410   /* If we ran out of tree, and have extra area_below left, we need to add it
6411    * to area_above */
6412   if (area_below > 0)
6413     area_above += area_below;
6414
6415   _gtk_tree_view_find_node (tree_view, above_path, &tree, &node);
6416
6417   /* We walk backwards */
6418   while (area_above > 0)
6419     {
6420       _gtk_rbtree_prev_full (tree, node, &tree, &node);
6421
6422       /* Always find the new path in the tree.  We cannot just assume
6423        * a gtk_tree_path_prev() is enough here, as there might be children
6424        * in between this node and the previous sibling node.  If this
6425        * appears to be a performance hotspot in profiles, we can look into
6426        * intrigate logic for keeping path, node and iter in sync like
6427        * we do for forward walks.  (Which will be hard because of the lacking
6428        * iter_prev).
6429        */
6430
6431       if (node == NULL)
6432         break;
6433
6434       gtk_tree_path_free (above_path);
6435       above_path = _gtk_tree_path_new_from_rbtree (tree, node);
6436
6437       gtk_tree_model_get_iter (tree_view->priv->model, &iter, above_path);
6438
6439       if (GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_INVALID) ||
6440           GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_COLUMN_INVALID))
6441         {
6442           _gtk_tree_view_queue_draw_node (tree_view, tree, node, NULL);
6443           if (validate_row (tree_view, tree, node, &iter, above_path))
6444             size_changed = TRUE;
6445         }
6446       area_above -= gtk_tree_view_get_row_height (tree_view, node);
6447     }
6448
6449   /* if we scrolled to a path, we need to set the dy here,
6450    * and sync the top row accordingly
6451    */
6452   if (tree_view->priv->scroll_to_path)
6453     {
6454       gtk_tree_view_set_top_row (tree_view, above_path, -area_above);
6455       gtk_tree_view_top_row_to_dy (tree_view);
6456
6457       need_redraw = TRUE;
6458     }
6459   else if (tree_view->priv->height <= gtk_adjustment_get_page_size (tree_view->priv->vadjustment))
6460     {
6461       /* when we are not scrolling, we should never set dy to something
6462        * else than zero. we update top_row to be in sync with dy = 0.
6463        */
6464       gtk_adjustment_set_value (GTK_ADJUSTMENT (tree_view->priv->vadjustment), 0);
6465       gtk_tree_view_dy_to_top_row (tree_view);
6466     }
6467   else if (gtk_adjustment_get_value (tree_view->priv->vadjustment) + gtk_adjustment_get_page_size (tree_view->priv->vadjustment) > tree_view->priv->height)
6468     {
6469       gtk_adjustment_set_value (GTK_ADJUSTMENT (tree_view->priv->vadjustment), tree_view->priv->height - gtk_adjustment_get_page_size (tree_view->priv->vadjustment));
6470       gtk_tree_view_dy_to_top_row (tree_view);
6471     }
6472   else
6473     gtk_tree_view_top_row_to_dy (tree_view);
6474
6475   /* update width/height and queue a resize */
6476   if (size_changed)
6477     {
6478       GtkRequisition requisition;
6479
6480       /* We temporarily guess a size, under the assumption that it will be the
6481        * same when we get our next size_allocate.  If we don't do this, we'll be
6482        * in an inconsistent state if we call top_row_to_dy. */
6483
6484       gtk_widget_get_preferred_size (GTK_WIDGET (tree_view),
6485                                      &requisition, NULL);
6486       gtk_adjustment_set_upper (tree_view->priv->hadjustment,
6487                                 MAX (gtk_adjustment_get_upper (tree_view->priv->hadjustment), requisition.width));
6488       gtk_adjustment_set_upper (tree_view->priv->vadjustment,
6489                                 MAX (gtk_adjustment_get_upper (tree_view->priv->vadjustment), requisition.height));
6490       gtk_widget_queue_resize (GTK_WIDGET (tree_view));
6491     }
6492
6493   if (tree_view->priv->scroll_to_path)
6494     {
6495       gtk_tree_row_reference_free (tree_view->priv->scroll_to_path);
6496       tree_view->priv->scroll_to_path = NULL;
6497     }
6498
6499   if (above_path)
6500     gtk_tree_path_free (above_path);
6501
6502   if (tree_view->priv->scroll_to_column)
6503     {
6504       tree_view->priv->scroll_to_column = NULL;
6505     }
6506   if (need_redraw)
6507     gtk_widget_queue_draw (GTK_WIDGET (tree_view));
6508 }
6509
6510 static void
6511 initialize_fixed_height_mode (GtkTreeView *tree_view)
6512 {
6513   if (!tree_view->priv->tree)
6514     return;
6515
6516   if (tree_view->priv->fixed_height < 0)
6517     {
6518       GtkTreeIter iter;
6519       GtkTreePath *path;
6520
6521       GtkRBTree *tree = NULL;
6522       GtkRBNode *node = NULL;
6523
6524       tree = tree_view->priv->tree;
6525       node = tree->root;
6526
6527       path = _gtk_tree_path_new_from_rbtree (tree, node);
6528       gtk_tree_model_get_iter (tree_view->priv->model, &iter, path);
6529
6530       validate_row (tree_view, tree, node, &iter, path);
6531
6532       gtk_tree_path_free (path);
6533
6534       tree_view->priv->fixed_height = gtk_tree_view_get_row_height (tree_view, node);
6535     }
6536
6537    _gtk_rbtree_set_fixed_height (tree_view->priv->tree,
6538                                  tree_view->priv->fixed_height, TRUE);
6539 }
6540
6541 /* Our strategy for finding nodes to validate is a little convoluted.  We find
6542  * the left-most uninvalidated node.  We then try walking right, validating
6543  * nodes.  Once we find a valid node, we repeat the previous process of finding
6544  * the first invalid node.
6545  */
6546
6547 static gboolean
6548 do_validate_rows (GtkTreeView *tree_view, gboolean queue_resize)
6549 {
6550   GtkRBTree *tree = NULL;
6551   GtkRBNode *node = NULL;
6552   gboolean validated_area = FALSE;
6553   gint retval = TRUE;
6554   GtkTreePath *path = NULL;
6555   GtkTreeIter iter;
6556   GTimer *timer;
6557   gint i = 0;
6558
6559   gint y = -1;
6560   gint prev_height = -1;
6561   gboolean fixed_height = TRUE;
6562
6563   g_assert (tree_view);
6564
6565   if (tree_view->priv->tree == NULL)
6566       return FALSE;
6567
6568   if (tree_view->priv->fixed_height_mode)
6569     {
6570       if (tree_view->priv->fixed_height < 0)
6571         initialize_fixed_height_mode (tree_view);
6572
6573       return FALSE;
6574     }
6575
6576   timer = g_timer_new ();
6577   g_timer_start (timer);
6578
6579   do
6580     {
6581       gboolean changed = FALSE;
6582
6583       if (! GTK_RBNODE_FLAG_SET (tree_view->priv->tree->root, GTK_RBNODE_DESCENDANTS_INVALID))
6584         {
6585           retval = FALSE;
6586           goto done;
6587         }
6588
6589       if (path != NULL)
6590         {
6591           node = _gtk_rbtree_next (tree, node);
6592           if (node != NULL)
6593             {
6594               TREE_VIEW_INTERNAL_ASSERT (gtk_tree_model_iter_next (tree_view->priv->model, &iter), FALSE);
6595               gtk_tree_path_next (path);
6596             }
6597           else
6598             {
6599               gtk_tree_path_free (path);
6600               path = NULL;
6601             }
6602         }
6603
6604       if (path == NULL)
6605         {
6606           tree = tree_view->priv->tree;
6607           node = tree_view->priv->tree->root;
6608
6609           g_assert (GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_DESCENDANTS_INVALID));
6610
6611           do
6612             {
6613               if (!_gtk_rbtree_is_nil (node->left) &&
6614                   GTK_RBNODE_FLAG_SET (node->left, GTK_RBNODE_DESCENDANTS_INVALID))
6615                 {
6616                   node = node->left;
6617                 }
6618               else if (!_gtk_rbtree_is_nil (node->right) &&
6619                        GTK_RBNODE_FLAG_SET (node->right, GTK_RBNODE_DESCENDANTS_INVALID))
6620                 {
6621                   node = node->right;
6622                 }
6623               else if (GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_INVALID) ||
6624                        GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_COLUMN_INVALID))
6625                 {
6626                   break;
6627                 }
6628               else if (node->children != NULL)
6629                 {
6630                   tree = node->children;
6631                   node = tree->root;
6632                 }
6633               else
6634                 /* RBTree corruption!  All bad */
6635                 g_assert_not_reached ();
6636             }
6637           while (TRUE);
6638           path = _gtk_tree_path_new_from_rbtree (tree, node);
6639           gtk_tree_model_get_iter (tree_view->priv->model, &iter, path);
6640         }
6641
6642       changed = validate_row (tree_view, tree, node, &iter, path);
6643       validated_area = changed || validated_area;
6644
6645       if (changed)
6646         {
6647           gint offset = gtk_tree_view_get_row_y_offset (tree_view, tree, node);
6648
6649           if (y == -1 || y > offset)
6650             y = offset;
6651         }
6652
6653       if (!tree_view->priv->fixed_height_check)
6654         {
6655           gint height;
6656
6657           height = gtk_tree_view_get_row_height (tree_view, node);
6658           if (prev_height < 0)
6659             prev_height = height;
6660           else if (prev_height != height)
6661             fixed_height = FALSE;
6662         }
6663
6664       i++;
6665     }
6666   while (g_timer_elapsed (timer, NULL) < GTK_TREE_VIEW_TIME_MS_PER_IDLE / 1000.);
6667
6668   if (!tree_view->priv->fixed_height_check)
6669    {
6670      if (fixed_height)
6671        _gtk_rbtree_set_fixed_height (tree_view->priv->tree, prev_height, FALSE);
6672
6673      tree_view->priv->fixed_height_check = 1;
6674    }
6675
6676  done:
6677   if (validated_area)
6678     {
6679       GtkRequisition requisition;
6680
6681       /* We temporarily guess a size, under the assumption that it will be the
6682        * same when we get our next size_allocate.  If we don't do this, we'll be
6683        * in an inconsistent state when we call top_row_to_dy. */
6684
6685       /* FIXME: This is called from size_request, for some reason it is not infinitely
6686        * recursing, we cannot call gtk_widget_get_preferred_size() here because that's
6687        * not allowed (from inside ->get_preferred_width/height() implementations, one
6688        * should call the vfuncs directly). However what is desired here is the full
6689        * size including any margins and limited by any alignment (i.e. after
6690        * GtkWidget:adjust_size_request() is called).
6691        *
6692        * Currently bypassing this but the real solution is to not update the scroll adjustments
6693        * untill we've recieved an allocation (never update scroll adjustments from size-requests).
6694        */
6695       gtk_tree_view_size_request (GTK_WIDGET (tree_view), &requisition, FALSE);
6696
6697       /* If rows above the current position have changed height, this has
6698        * affected the current view and thus needs a redraw.
6699        */
6700       if (y != -1 && y < gtk_adjustment_get_value (tree_view->priv->vadjustment))
6701         gtk_widget_queue_draw (GTK_WIDGET (tree_view));
6702
6703       gtk_adjustment_set_upper (tree_view->priv->hadjustment,
6704                                 MAX (gtk_adjustment_get_upper (tree_view->priv->hadjustment), requisition.width));
6705       gtk_adjustment_set_upper (tree_view->priv->vadjustment,
6706                                 MAX (gtk_adjustment_get_upper (tree_view->priv->vadjustment), requisition.height));
6707
6708       if (queue_resize)
6709         gtk_widget_queue_resize_no_redraw (GTK_WIDGET (tree_view));
6710     }
6711
6712   if (path) gtk_tree_path_free (path);
6713   g_timer_destroy (timer);
6714
6715   return retval;
6716 }
6717
6718 static gboolean
6719 validate_rows (GtkTreeView *tree_view)
6720 {
6721   gboolean retval;
6722
6723   retval = do_validate_rows (tree_view, TRUE);
6724
6725   if (! retval && tree_view->priv->validate_rows_timer)
6726     {
6727       g_source_remove (tree_view->priv->validate_rows_timer);
6728       tree_view->priv->validate_rows_timer = 0;
6729     }
6730
6731   return retval;
6732 }
6733
6734 static gboolean
6735 validate_rows_handler (GtkTreeView *tree_view)
6736 {
6737   gboolean retval;
6738
6739   retval = do_validate_rows (tree_view, TRUE);
6740   if (! retval && tree_view->priv->validate_rows_timer)
6741     {
6742       g_source_remove (tree_view->priv->validate_rows_timer);
6743       tree_view->priv->validate_rows_timer = 0;
6744     }
6745
6746   return retval;
6747 }
6748
6749 static gboolean
6750 do_presize_handler (GtkTreeView *tree_view)
6751 {
6752   if (tree_view->priv->mark_rows_col_dirty)
6753     {
6754       if (tree_view->priv->tree)
6755         _gtk_rbtree_column_invalid (tree_view->priv->tree);
6756       tree_view->priv->mark_rows_col_dirty = FALSE;
6757     }
6758   validate_visible_area (tree_view);
6759   tree_view->priv->presize_handler_timer = 0;
6760
6761   if (tree_view->priv->fixed_height_mode)
6762     {
6763       GtkRequisition requisition;
6764
6765       gtk_widget_get_preferred_size (GTK_WIDGET (tree_view),
6766                                      &requisition, NULL);
6767
6768       gtk_adjustment_set_upper (tree_view->priv->hadjustment,
6769                                 MAX (gtk_adjustment_get_upper (tree_view->priv->hadjustment), requisition.width));
6770       gtk_adjustment_set_upper (tree_view->priv->vadjustment,
6771                                 MAX (gtk_adjustment_get_upper (tree_view->priv->vadjustment), requisition.height));
6772       gtk_widget_queue_resize (GTK_WIDGET (tree_view));
6773     }
6774
6775   return FALSE;
6776 }
6777
6778 static gboolean
6779 presize_handler_callback (gpointer data)
6780 {
6781   do_presize_handler (GTK_TREE_VIEW (data));
6782
6783   return FALSE;
6784 }
6785
6786 static void
6787 install_presize_handler (GtkTreeView *tree_view)
6788 {
6789   if (! gtk_widget_get_realized (GTK_WIDGET (tree_view)))
6790     return;
6791
6792   if (! tree_view->priv->presize_handler_timer)
6793     {
6794       tree_view->priv->presize_handler_timer =
6795         gdk_threads_add_idle_full (GTK_PRIORITY_RESIZE - 2, presize_handler_callback, tree_view, NULL);
6796     }
6797   if (! tree_view->priv->validate_rows_timer)
6798     {
6799       tree_view->priv->validate_rows_timer =
6800         gdk_threads_add_idle_full (GTK_TREE_VIEW_PRIORITY_VALIDATE, (GSourceFunc) validate_rows_handler, tree_view, NULL);
6801     }
6802 }
6803
6804 static void
6805 gtk_tree_view_bin_process_updates (GtkTreeView *tree_view)
6806 {
6807   /* Prior to drawing, we make sure the visible area is validated. */
6808   if (tree_view->priv->presize_handler_timer)
6809     {
6810       g_source_remove (tree_view->priv->presize_handler_timer);
6811       tree_view->priv->presize_handler_timer = 0;
6812
6813       do_presize_handler (tree_view);
6814     }
6815
6816   gdk_window_process_updates (tree_view->priv->bin_window, TRUE);
6817 }
6818
6819 static gboolean
6820 scroll_sync_handler (GtkTreeView *tree_view)
6821 {
6822   if (tree_view->priv->height <= gtk_adjustment_get_page_size (tree_view->priv->vadjustment))
6823     gtk_adjustment_set_value (GTK_ADJUSTMENT (tree_view->priv->vadjustment), 0);
6824   else if (gtk_tree_row_reference_valid (tree_view->priv->top_row))
6825     gtk_tree_view_top_row_to_dy (tree_view);
6826   else
6827     gtk_tree_view_dy_to_top_row (tree_view);
6828
6829   tree_view->priv->scroll_sync_timer = 0;
6830
6831   return FALSE;
6832 }
6833
6834 static void
6835 install_scroll_sync_handler (GtkTreeView *tree_view)
6836 {
6837   if (!gtk_widget_get_realized (GTK_WIDGET (tree_view)))
6838     return;
6839
6840   if (!tree_view->priv->scroll_sync_timer)
6841     {
6842       tree_view->priv->scroll_sync_timer =
6843         gdk_threads_add_idle_full (GTK_TREE_VIEW_PRIORITY_SCROLL_SYNC, (GSourceFunc) scroll_sync_handler, tree_view, NULL);
6844     }
6845 }
6846
6847 static void
6848 gtk_tree_view_set_top_row (GtkTreeView *tree_view,
6849                            GtkTreePath *path,
6850                            gint         offset)
6851 {
6852   gtk_tree_row_reference_free (tree_view->priv->top_row);
6853
6854   if (!path)
6855     {
6856       tree_view->priv->top_row = NULL;
6857       tree_view->priv->top_row_dy = 0;
6858     }
6859   else
6860     {
6861       tree_view->priv->top_row = gtk_tree_row_reference_new_proxy (G_OBJECT (tree_view), tree_view->priv->model, path);
6862       tree_view->priv->top_row_dy = offset;
6863     }
6864 }
6865
6866 /* Always call this iff dy is in the visible range.  If the tree is empty, then
6867  * it's set to be NULL, and top_row_dy is 0;
6868  */
6869 static void
6870 gtk_tree_view_dy_to_top_row (GtkTreeView *tree_view)
6871 {
6872   gint offset;
6873   GtkTreePath *path;
6874   GtkRBTree *tree;
6875   GtkRBNode *node;
6876
6877   if (tree_view->priv->tree == NULL)
6878     {
6879       gtk_tree_view_set_top_row (tree_view, NULL, 0);
6880     }
6881   else
6882     {
6883       offset = _gtk_rbtree_find_offset (tree_view->priv->tree,
6884                                         tree_view->priv->dy,
6885                                         &tree, &node);
6886
6887       if (tree == NULL)
6888         {
6889           gtk_tree_view_set_top_row (tree_view, NULL, 0);
6890         }
6891       else
6892         {
6893           path = _gtk_tree_path_new_from_rbtree (tree, node);
6894           gtk_tree_view_set_top_row (tree_view, path, offset);
6895           gtk_tree_path_free (path);
6896         }
6897     }
6898 }
6899
6900 static void
6901 gtk_tree_view_top_row_to_dy (GtkTreeView *tree_view)
6902 {
6903   GtkTreePath *path;
6904   GtkRBTree *tree;
6905   GtkRBNode *node;
6906   int new_dy;
6907
6908   /* Avoid recursive calls */
6909   if (tree_view->priv->in_top_row_to_dy)
6910     return;
6911
6912   if (tree_view->priv->top_row)
6913     path = gtk_tree_row_reference_get_path (tree_view->priv->top_row);
6914   else
6915     path = NULL;
6916
6917   if (!path)
6918     tree = NULL;
6919   else
6920     _gtk_tree_view_find_node (tree_view, path, &tree, &node);
6921
6922   if (path)
6923     gtk_tree_path_free (path);
6924
6925   if (tree == NULL)
6926     {
6927       /* keep dy and set new toprow */
6928       gtk_tree_row_reference_free (tree_view->priv->top_row);
6929       tree_view->priv->top_row = NULL;
6930       tree_view->priv->top_row_dy = 0;
6931       /* DO NOT install the idle handler */
6932       gtk_tree_view_dy_to_top_row (tree_view);
6933       return;
6934     }
6935
6936   if (gtk_tree_view_get_row_height (tree_view, node)
6937       < tree_view->priv->top_row_dy)
6938     {
6939       /* new top row -- do NOT install the idle handler */
6940       gtk_tree_view_dy_to_top_row (tree_view);
6941       return;
6942     }
6943
6944   new_dy = _gtk_rbtree_node_find_offset (tree, node);
6945   new_dy += tree_view->priv->top_row_dy;
6946
6947   if (new_dy + gtk_adjustment_get_page_size (tree_view->priv->vadjustment) > tree_view->priv->height)
6948     new_dy = tree_view->priv->height - gtk_adjustment_get_page_size (tree_view->priv->vadjustment);
6949
6950   new_dy = MAX (0, new_dy);
6951
6952   tree_view->priv->in_top_row_to_dy = TRUE;
6953   gtk_adjustment_set_value (tree_view->priv->vadjustment, (gdouble)new_dy);
6954   tree_view->priv->in_top_row_to_dy = FALSE;
6955 }
6956
6957
6958 void
6959 _gtk_tree_view_install_mark_rows_col_dirty (GtkTreeView *tree_view,
6960                                             gboolean     install_handler)
6961 {
6962   tree_view->priv->mark_rows_col_dirty = TRUE;
6963
6964   if (install_handler)
6965     install_presize_handler (tree_view);
6966 }
6967
6968 /*
6969  * This function works synchronously (due to the while (validate_rows...)
6970  * loop).
6971  *
6972  * There was a check for column_type != GTK_TREE_VIEW_COLUMN_AUTOSIZE
6973  * here. You now need to check that yourself.
6974  */
6975 void
6976 _gtk_tree_view_column_autosize (GtkTreeView *tree_view,
6977                                 GtkTreeViewColumn *column)
6978 {
6979   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
6980   g_return_if_fail (GTK_IS_TREE_VIEW_COLUMN (column));
6981
6982   _gtk_tree_view_column_cell_set_dirty (column, FALSE);
6983
6984   do_presize_handler (tree_view);
6985   while (validate_rows (tree_view));
6986
6987   gtk_widget_queue_resize (GTK_WIDGET (tree_view));
6988 }
6989
6990 /* Drag-and-drop */
6991
6992 static void
6993 set_source_row (GdkDragContext *context,
6994                 GtkTreeModel   *model,
6995                 GtkTreePath    *source_row)
6996 {
6997   g_object_set_data_full (G_OBJECT (context),
6998                           I_("gtk-tree-view-source-row"),
6999                           source_row ? gtk_tree_row_reference_new (model, source_row) : NULL,
7000                           (GDestroyNotify) (source_row ? gtk_tree_row_reference_free : NULL));
7001 }
7002
7003 static GtkTreePath*
7004 get_source_row (GdkDragContext *context)
7005 {
7006   GtkTreeRowReference *ref =
7007     g_object_get_data (G_OBJECT (context), "gtk-tree-view-source-row");
7008
7009   if (ref)
7010     return gtk_tree_row_reference_get_path (ref);
7011   else
7012     return NULL;
7013 }
7014
7015 typedef struct
7016 {
7017   GtkTreeRowReference *dest_row;
7018   guint                path_down_mode   : 1;
7019   guint                empty_view_drop  : 1;
7020   guint                drop_append_mode : 1;
7021 }
7022 DestRow;
7023
7024 static void
7025 dest_row_free (gpointer data)
7026 {
7027   DestRow *dr = (DestRow *)data;
7028
7029   gtk_tree_row_reference_free (dr->dest_row);
7030   g_slice_free (DestRow, dr);
7031 }
7032
7033 static void
7034 set_dest_row (GdkDragContext *context,
7035               GtkTreeModel   *model,
7036               GtkTreePath    *dest_row,
7037               gboolean        path_down_mode,
7038               gboolean        empty_view_drop,
7039               gboolean        drop_append_mode)
7040 {
7041   DestRow *dr;
7042
7043   if (!dest_row)
7044     {
7045       g_object_set_data_full (G_OBJECT (context), I_("gtk-tree-view-dest-row"),
7046                               NULL, NULL);
7047       return;
7048     }
7049
7050   dr = g_slice_new (DestRow);
7051
7052   dr->dest_row = gtk_tree_row_reference_new (model, dest_row);
7053   dr->path_down_mode = path_down_mode != FALSE;
7054   dr->empty_view_drop = empty_view_drop != FALSE;
7055   dr->drop_append_mode = drop_append_mode != FALSE;
7056
7057   g_object_set_data_full (G_OBJECT (context), I_("gtk-tree-view-dest-row"),
7058                           dr, (GDestroyNotify) dest_row_free);
7059 }
7060
7061 static GtkTreePath*
7062 get_dest_row (GdkDragContext *context,
7063               gboolean       *path_down_mode)
7064 {
7065   DestRow *dr =
7066     g_object_get_data (G_OBJECT (context), "gtk-tree-view-dest-row");
7067
7068   if (dr)
7069     {
7070       GtkTreePath *path = NULL;
7071
7072       if (path_down_mode)
7073         *path_down_mode = dr->path_down_mode;
7074
7075       if (dr->dest_row)
7076         path = gtk_tree_row_reference_get_path (dr->dest_row);
7077       else if (dr->empty_view_drop)
7078         path = gtk_tree_path_new_from_indices (0, -1);
7079       else
7080         path = NULL;
7081
7082       if (path && dr->drop_append_mode)
7083         gtk_tree_path_next (path);
7084
7085       return path;
7086     }
7087   else
7088     return NULL;
7089 }
7090
7091 /* Get/set whether drag_motion requested the drag data and
7092  * drag_data_received should thus not actually insert the data,
7093  * since the data doesn't result from a drop.
7094  */
7095 static void
7096 set_status_pending (GdkDragContext *context,
7097                     GdkDragAction   suggested_action)
7098 {
7099   g_object_set_data (G_OBJECT (context),
7100                      I_("gtk-tree-view-status-pending"),
7101                      GINT_TO_POINTER (suggested_action));
7102 }
7103
7104 static GdkDragAction
7105 get_status_pending (GdkDragContext *context)
7106 {
7107   return GPOINTER_TO_INT (g_object_get_data (G_OBJECT (context),
7108                                              "gtk-tree-view-status-pending"));
7109 }
7110
7111 static TreeViewDragInfo*
7112 get_info (GtkTreeView *tree_view)
7113 {
7114   return g_object_get_data (G_OBJECT (tree_view), "gtk-tree-view-drag-info");
7115 }
7116
7117 static void
7118 destroy_info (TreeViewDragInfo *di)
7119 {
7120   g_slice_free (TreeViewDragInfo, di);
7121 }
7122
7123 static TreeViewDragInfo*
7124 ensure_info (GtkTreeView *tree_view)
7125 {
7126   TreeViewDragInfo *di;
7127
7128   di = get_info (tree_view);
7129
7130   if (di == NULL)
7131     {
7132       di = g_slice_new0 (TreeViewDragInfo);
7133
7134       g_object_set_data_full (G_OBJECT (tree_view),
7135                               I_("gtk-tree-view-drag-info"),
7136                               di,
7137                               (GDestroyNotify) destroy_info);
7138     }
7139
7140   return di;
7141 }
7142
7143 static void
7144 remove_info (GtkTreeView *tree_view)
7145 {
7146   g_object_set_data (G_OBJECT (tree_view), I_("gtk-tree-view-drag-info"), NULL);
7147 }
7148
7149 #if 0
7150 static gint
7151 drag_scan_timeout (gpointer data)
7152 {
7153   GtkTreeView *tree_view;
7154   gint x, y;
7155   GdkModifierType state;
7156   GtkTreePath *path = NULL;
7157   GtkTreeViewColumn *column = NULL;
7158   GdkRectangle visible_rect;
7159
7160   GDK_THREADS_ENTER ();
7161
7162   tree_view = GTK_TREE_VIEW (data);
7163
7164   gdk_window_get_device_position (tree_view->priv->bin_window,
7165                                   gdk_device_manager_get_client_pointer (
7166                                     gdk_display_get_device_manager (
7167                                       gtk_widget_get_display (GTK_WIDGET (tree_view)))),
7168                                   &x, &y, &state);
7169
7170   gtk_tree_view_get_visible_rect (tree_view, &visible_rect);
7171
7172   /* See if we are near the edge. */
7173   if ((x - visible_rect.x) < SCROLL_EDGE_SIZE ||
7174       (visible_rect.x + visible_rect.width - x) < SCROLL_EDGE_SIZE ||
7175       (y - visible_rect.y) < SCROLL_EDGE_SIZE ||
7176       (visible_rect.y + visible_rect.height - y) < SCROLL_EDGE_SIZE)
7177     {
7178       gtk_tree_view_get_path_at_pos (tree_view,
7179                                      tree_view->priv->bin_window,
7180                                      x, y,
7181                                      &path,
7182                                      &column,
7183                                      NULL,
7184                                      NULL);
7185
7186       if (path != NULL)
7187         {
7188           gtk_tree_view_scroll_to_cell (tree_view,
7189                                         path,
7190                                         column,
7191                                         TRUE,
7192                                         0.5, 0.5);
7193
7194           gtk_tree_path_free (path);
7195         }
7196     }
7197
7198   GDK_THREADS_LEAVE ();
7199
7200   return TRUE;
7201 }
7202 #endif /* 0 */
7203
7204 static void
7205 add_scroll_timeout (GtkTreeView *tree_view)
7206 {
7207   if (tree_view->priv->scroll_timeout == 0)
7208     {
7209       tree_view->priv->scroll_timeout =
7210         gdk_threads_add_timeout (150, scroll_row_timeout, tree_view);
7211     }
7212 }
7213
7214 static void
7215 remove_scroll_timeout (GtkTreeView *tree_view)
7216 {
7217   if (tree_view->priv->scroll_timeout != 0)
7218     {
7219       g_source_remove (tree_view->priv->scroll_timeout);
7220       tree_view->priv->scroll_timeout = 0;
7221     }
7222 }
7223
7224 static gboolean
7225 check_model_dnd (GtkTreeModel *model,
7226                  GType         required_iface,
7227                  const gchar  *signal)
7228 {
7229   if (model == NULL || !G_TYPE_CHECK_INSTANCE_TYPE ((model), required_iface))
7230     {
7231       g_warning ("You must override the default '%s' handler "
7232                  "on GtkTreeView when using models that don't support "
7233                  "the %s interface and enabling drag-and-drop. The simplest way to do this "
7234                  "is to connect to '%s' and call "
7235                  "g_signal_stop_emission_by_name() in your signal handler to prevent "
7236                  "the default handler from running. Look at the source code "
7237                  "for the default handler in gtktreeview.c to get an idea what "
7238                  "your handler should do. (gtktreeview.c is in the GTK source "
7239                  "code.) If you're using GTK from a language other than C, "
7240                  "there may be a more natural way to override default handlers, e.g. via derivation.",
7241                  signal, g_type_name (required_iface), signal);
7242       return FALSE;
7243     }
7244   else
7245     return TRUE;
7246 }
7247
7248 static void
7249 remove_open_timeout (GtkTreeView *tree_view)
7250 {
7251   if (tree_view->priv->open_dest_timeout != 0)
7252     {
7253       g_source_remove (tree_view->priv->open_dest_timeout);
7254       tree_view->priv->open_dest_timeout = 0;
7255     }
7256 }
7257
7258
7259 static gint
7260 open_row_timeout (gpointer data)
7261 {
7262   GtkTreeView *tree_view = data;
7263   GtkTreePath *dest_path = NULL;
7264   GtkTreeViewDropPosition pos;
7265   gboolean result = FALSE;
7266
7267   gtk_tree_view_get_drag_dest_row (tree_view,
7268                                    &dest_path,
7269                                    &pos);
7270
7271   if (dest_path &&
7272       (pos == GTK_TREE_VIEW_DROP_INTO_OR_AFTER ||
7273        pos == GTK_TREE_VIEW_DROP_INTO_OR_BEFORE))
7274     {
7275       gtk_tree_view_expand_row (tree_view, dest_path, FALSE);
7276       tree_view->priv->open_dest_timeout = 0;
7277
7278       gtk_tree_path_free (dest_path);
7279     }
7280   else
7281     {
7282       if (dest_path)
7283         gtk_tree_path_free (dest_path);
7284
7285       result = TRUE;
7286     }
7287
7288   return result;
7289 }
7290
7291 static gboolean
7292 scroll_row_timeout (gpointer data)
7293 {
7294   GtkTreeView *tree_view = data;
7295
7296   gtk_tree_view_vertical_autoscroll (tree_view);
7297
7298   if (tree_view->priv->rubber_band_status == RUBBER_BAND_ACTIVE)
7299     gtk_tree_view_update_rubber_band (tree_view);
7300
7301   return TRUE;
7302 }
7303
7304 /* Returns TRUE if event should not be propagated to parent widgets */
7305 static gboolean
7306 set_destination_row (GtkTreeView    *tree_view,
7307                      GdkDragContext *context,
7308                      /* coordinates relative to the widget */
7309                      gint            x,
7310                      gint            y,
7311                      GdkDragAction  *suggested_action,
7312                      GdkAtom        *target)
7313 {
7314   GtkTreePath *path = NULL;
7315   GtkTreeViewDropPosition pos;
7316   GtkTreeViewDropPosition old_pos;
7317   TreeViewDragInfo *di;
7318   GtkWidget *widget;
7319   GtkTreePath *old_dest_path = NULL;
7320   gboolean can_drop = FALSE;
7321
7322   *suggested_action = 0;
7323   *target = GDK_NONE;
7324
7325   widget = GTK_WIDGET (tree_view);
7326
7327   di = get_info (tree_view);
7328
7329   if (di == NULL || y - gtk_tree_view_get_effective_header_height (tree_view) < 0)
7330     {
7331       /* someone unset us as a drag dest, note that if
7332        * we return FALSE drag_leave isn't called
7333        */
7334
7335       gtk_tree_view_set_drag_dest_row (tree_view,
7336                                        NULL,
7337                                        GTK_TREE_VIEW_DROP_BEFORE);
7338
7339       remove_scroll_timeout (GTK_TREE_VIEW (widget));
7340       remove_open_timeout (GTK_TREE_VIEW (widget));
7341
7342       return FALSE; /* no longer a drop site */
7343     }
7344
7345   *target = gtk_drag_dest_find_target (widget, context,
7346                                        gtk_drag_dest_get_target_list (widget));
7347   if (*target == GDK_NONE)
7348     {
7349       return FALSE;
7350     }
7351
7352   if (!gtk_tree_view_get_dest_row_at_pos (tree_view,
7353                                           x, y,
7354                                           &path,
7355                                           &pos))
7356     {
7357       gint n_children;
7358       GtkTreeModel *model;
7359
7360       remove_open_timeout (tree_view);
7361
7362       /* the row got dropped on empty space, let's setup a special case
7363        */
7364
7365       if (path)
7366         gtk_tree_path_free (path);
7367
7368       model = gtk_tree_view_get_model (tree_view);
7369
7370       n_children = gtk_tree_model_iter_n_children (model, NULL);
7371       if (n_children)
7372         {
7373           pos = GTK_TREE_VIEW_DROP_AFTER;
7374           path = gtk_tree_path_new_from_indices (n_children - 1, -1);
7375         }
7376       else
7377         {
7378           pos = GTK_TREE_VIEW_DROP_BEFORE;
7379           path = gtk_tree_path_new_from_indices (0, -1);
7380         }
7381
7382       can_drop = TRUE;
7383
7384       goto out;
7385     }
7386
7387   g_assert (path);
7388
7389   /* If we left the current row's "open" zone, unset the timeout for
7390    * opening the row
7391    */
7392   gtk_tree_view_get_drag_dest_row (tree_view,
7393                                    &old_dest_path,
7394                                    &old_pos);
7395
7396   if (old_dest_path &&
7397       (gtk_tree_path_compare (path, old_dest_path) != 0 ||
7398        !(pos == GTK_TREE_VIEW_DROP_INTO_OR_AFTER ||
7399          pos == GTK_TREE_VIEW_DROP_INTO_OR_BEFORE)))
7400     remove_open_timeout (tree_view);
7401
7402   if (old_dest_path)
7403     gtk_tree_path_free (old_dest_path);
7404
7405   if (TRUE /* FIXME if the location droppable predicate */)
7406     {
7407       can_drop = TRUE;
7408     }
7409
7410 out:
7411   if (can_drop)
7412     {
7413       GtkWidget *source_widget;
7414
7415       *suggested_action = gdk_drag_context_get_suggested_action (context);
7416       source_widget = gtk_drag_get_source_widget (context);
7417
7418       if (source_widget == widget)
7419         {
7420           /* Default to MOVE, unless the user has
7421            * pressed ctrl or shift to affect available actions
7422            */
7423           if ((gdk_drag_context_get_actions (context) & GDK_ACTION_MOVE) != 0)
7424             *suggested_action = GDK_ACTION_MOVE;
7425         }
7426
7427       gtk_tree_view_set_drag_dest_row (GTK_TREE_VIEW (widget),
7428                                        path, pos);
7429     }
7430   else
7431     {
7432       /* can't drop here */
7433       remove_open_timeout (tree_view);
7434
7435       gtk_tree_view_set_drag_dest_row (GTK_TREE_VIEW (widget),
7436                                        NULL,
7437                                        GTK_TREE_VIEW_DROP_BEFORE);
7438     }
7439
7440   if (path)
7441     gtk_tree_path_free (path);
7442
7443   return TRUE;
7444 }
7445
7446 static GtkTreePath*
7447 get_logical_dest_row (GtkTreeView *tree_view,
7448                       gboolean    *path_down_mode,
7449                       gboolean    *drop_append_mode)
7450 {
7451   /* adjust path to point to the row the drop goes in front of */
7452   GtkTreePath *path = NULL;
7453   GtkTreeViewDropPosition pos;
7454
7455   g_return_val_if_fail (path_down_mode != NULL, NULL);
7456   g_return_val_if_fail (drop_append_mode != NULL, NULL);
7457
7458   *path_down_mode = FALSE;
7459   *drop_append_mode = 0;
7460
7461   gtk_tree_view_get_drag_dest_row (tree_view, &path, &pos);
7462
7463   if (path == NULL)
7464     return NULL;
7465
7466   if (pos == GTK_TREE_VIEW_DROP_BEFORE)
7467     ; /* do nothing */
7468   else if (pos == GTK_TREE_VIEW_DROP_INTO_OR_BEFORE ||
7469            pos == GTK_TREE_VIEW_DROP_INTO_OR_AFTER)
7470     *path_down_mode = TRUE;
7471   else
7472     {
7473       GtkTreeIter iter;
7474       GtkTreeModel *model = gtk_tree_view_get_model (tree_view);
7475
7476       g_assert (pos == GTK_TREE_VIEW_DROP_AFTER);
7477
7478       if (!gtk_tree_model_get_iter (model, &iter, path) ||
7479           !gtk_tree_model_iter_next (model, &iter))
7480         *drop_append_mode = 1;
7481       else
7482         {
7483           *drop_append_mode = 0;
7484           gtk_tree_path_next (path);
7485         }
7486     }
7487
7488   return path;
7489 }
7490
7491 static gboolean
7492 gtk_tree_view_maybe_begin_dragging_row (GtkTreeView      *tree_view,
7493                                         GdkEventMotion   *event)
7494 {
7495   GtkWidget *widget = GTK_WIDGET (tree_view);
7496   GdkDragContext *context;
7497   TreeViewDragInfo *di;
7498   GtkTreePath *path = NULL;
7499   gint button;
7500   gint cell_x, cell_y;
7501   GtkTreeModel *model;
7502   gboolean retval = FALSE;
7503
7504   di = get_info (tree_view);
7505
7506   if (di == NULL || !di->source_set)
7507     goto out;
7508
7509   if (tree_view->priv->pressed_button < 0)
7510     goto out;
7511
7512   if (!gtk_drag_check_threshold (widget,
7513                                  tree_view->priv->press_start_x,
7514                                  tree_view->priv->press_start_y,
7515                                  event->x, event->y))
7516     goto out;
7517
7518   model = gtk_tree_view_get_model (tree_view);
7519
7520   if (model == NULL)
7521     goto out;
7522
7523   button = tree_view->priv->pressed_button;
7524   tree_view->priv->pressed_button = -1;
7525
7526   gtk_tree_view_get_path_at_pos (tree_view,
7527                                  tree_view->priv->press_start_x,
7528                                  tree_view->priv->press_start_y,
7529                                  &path,
7530                                  NULL,
7531                                  &cell_x,
7532                                  &cell_y);
7533
7534   if (path == NULL)
7535     goto out;
7536
7537   if (!GTK_IS_TREE_DRAG_SOURCE (model) ||
7538       !gtk_tree_drag_source_row_draggable (GTK_TREE_DRAG_SOURCE (model),
7539                                            path))
7540     goto out;
7541
7542   if (!(GDK_BUTTON1_MASK << (button - 1) & di->start_button_mask))
7543     goto out;
7544
7545   /* Now we can begin the drag */
7546
7547   retval = TRUE;
7548
7549   context = gtk_drag_begin (widget,
7550                             gtk_drag_source_get_target_list (widget),
7551                             di->source_actions,
7552                             button,
7553                             (GdkEvent*)event);
7554
7555   set_source_row (context, model, path);
7556
7557  out:
7558   if (path)
7559     gtk_tree_path_free (path);
7560
7561   return retval;
7562 }
7563
7564
7565 static void
7566 gtk_tree_view_drag_begin (GtkWidget      *widget,
7567                           GdkDragContext *context)
7568 {
7569   GtkTreeView *tree_view;
7570   GtkTreePath *path = NULL;
7571   gint cell_x, cell_y;
7572   cairo_surface_t *row_pix;
7573   TreeViewDragInfo *di;
7574
7575   tree_view = GTK_TREE_VIEW (widget);
7576
7577   /* if the user uses a custom DND source impl, we don't set the icon here */
7578   di = get_info (tree_view);
7579
7580   if (di == NULL || !di->source_set)
7581     return;
7582
7583   gtk_tree_view_get_path_at_pos (tree_view,
7584                                  tree_view->priv->press_start_x,
7585                                  tree_view->priv->press_start_y,
7586                                  &path,
7587                                  NULL,
7588                                  &cell_x,
7589                                  &cell_y);
7590
7591   /* If path is NULL, there's nothing we can drag.  For now, we silently
7592    * bail out.  Actually, dragging should not be possible from an empty
7593    * tree view, but there's no way we can cancel that from here.
7594    * Automatically unsetting the tree view as drag source for empty models
7595    * is something that would likely break other people's code ...
7596    */
7597   if (!path)
7598     return;
7599
7600   row_pix = gtk_tree_view_create_row_drag_icon (tree_view,
7601                                                 path);
7602   cairo_surface_set_device_offset (row_pix,
7603                                    /* the + 1 is for the black border in the icon */
7604                                    - (tree_view->priv->press_start_x + 1),
7605                                    - (cell_y + 1));
7606
7607   gtk_drag_set_icon_surface (context, row_pix);
7608
7609   cairo_surface_destroy (row_pix);
7610   gtk_tree_path_free (path);
7611 }
7612
7613 static void
7614 gtk_tree_view_drag_end (GtkWidget      *widget,
7615                         GdkDragContext *context)
7616 {
7617   /* do nothing */
7618 }
7619
7620 /* Default signal implementations for the drag signals */
7621 static void
7622 gtk_tree_view_drag_data_get (GtkWidget        *widget,
7623                              GdkDragContext   *context,
7624                              GtkSelectionData *selection_data,
7625                              guint             info,
7626                              guint             time)
7627 {
7628   GtkTreeView *tree_view;
7629   GtkTreeModel *model;
7630   TreeViewDragInfo *di;
7631   GtkTreePath *source_row;
7632
7633   tree_view = GTK_TREE_VIEW (widget);
7634
7635   model = gtk_tree_view_get_model (tree_view);
7636
7637   if (model == NULL)
7638     return;
7639
7640   di = get_info (GTK_TREE_VIEW (widget));
7641
7642   if (di == NULL)
7643     return;
7644
7645   source_row = get_source_row (context);
7646
7647   if (source_row == NULL)
7648     return;
7649
7650   /* We can implement the GTK_TREE_MODEL_ROW target generically for
7651    * any model; for DragSource models there are some other targets
7652    * we also support.
7653    */
7654
7655   if (GTK_IS_TREE_DRAG_SOURCE (model) &&
7656       gtk_tree_drag_source_drag_data_get (GTK_TREE_DRAG_SOURCE (model),
7657                                           source_row,
7658                                           selection_data))
7659     goto done;
7660
7661   /* If drag_data_get does nothing, try providing row data. */
7662   if (gtk_selection_data_get_target (selection_data) == gdk_atom_intern_static_string ("GTK_TREE_MODEL_ROW"))
7663     {
7664       gtk_tree_set_row_drag_data (selection_data,
7665                                   model,
7666                                   source_row);
7667     }
7668
7669  done:
7670   gtk_tree_path_free (source_row);
7671 }
7672
7673
7674 static void
7675 gtk_tree_view_drag_data_delete (GtkWidget      *widget,
7676                                 GdkDragContext *context)
7677 {
7678   TreeViewDragInfo *di;
7679   GtkTreeModel *model;
7680   GtkTreeView *tree_view;
7681   GtkTreePath *source_row;
7682
7683   tree_view = GTK_TREE_VIEW (widget);
7684   model = gtk_tree_view_get_model (tree_view);
7685
7686   if (!check_model_dnd (model, GTK_TYPE_TREE_DRAG_SOURCE, "drag_data_delete"))
7687     return;
7688
7689   di = get_info (tree_view);
7690
7691   if (di == NULL)
7692     return;
7693
7694   source_row = get_source_row (context);
7695
7696   if (source_row == NULL)
7697     return;
7698
7699   gtk_tree_drag_source_drag_data_delete (GTK_TREE_DRAG_SOURCE (model),
7700                                          source_row);
7701
7702   gtk_tree_path_free (source_row);
7703
7704   set_source_row (context, NULL, NULL);
7705 }
7706
7707 static void
7708 gtk_tree_view_drag_leave (GtkWidget      *widget,
7709                           GdkDragContext *context,
7710                           guint             time)
7711 {
7712   /* unset any highlight row */
7713   gtk_tree_view_set_drag_dest_row (GTK_TREE_VIEW (widget),
7714                                    NULL,
7715                                    GTK_TREE_VIEW_DROP_BEFORE);
7716
7717   remove_scroll_timeout (GTK_TREE_VIEW (widget));
7718   remove_open_timeout (GTK_TREE_VIEW (widget));
7719 }
7720
7721
7722 static gboolean
7723 gtk_tree_view_drag_motion (GtkWidget        *widget,
7724                            GdkDragContext   *context,
7725                            /* coordinates relative to the widget */
7726                            gint              x,
7727                            gint              y,
7728                            guint             time)
7729 {
7730   gboolean empty;
7731   GtkTreePath *path = NULL;
7732   GtkTreeViewDropPosition pos;
7733   GtkTreeView *tree_view;
7734   GdkDragAction suggested_action = 0;
7735   GdkAtom target;
7736
7737   tree_view = GTK_TREE_VIEW (widget);
7738
7739   if (!set_destination_row (tree_view, context, x, y, &suggested_action, &target))
7740     return FALSE;
7741
7742   gtk_tree_view_get_drag_dest_row (tree_view, &path, &pos);
7743
7744   /* we only know this *after* set_desination_row */
7745   empty = tree_view->priv->empty_view_drop;
7746
7747   if (path == NULL && !empty)
7748     {
7749       /* Can't drop here. */
7750       gdk_drag_status (context, 0, time);
7751     }
7752   else
7753     {
7754       if (tree_view->priv->open_dest_timeout == 0 &&
7755           (pos == GTK_TREE_VIEW_DROP_INTO_OR_AFTER ||
7756            pos == GTK_TREE_VIEW_DROP_INTO_OR_BEFORE))
7757         {
7758           tree_view->priv->open_dest_timeout =
7759             gdk_threads_add_timeout (AUTO_EXPAND_TIMEOUT, open_row_timeout, tree_view);
7760         }
7761       else
7762         {
7763           add_scroll_timeout (tree_view);
7764         }
7765
7766       if (target == gdk_atom_intern_static_string ("GTK_TREE_MODEL_ROW"))
7767         {
7768           /* Request data so we can use the source row when
7769            * determining whether to accept the drop
7770            */
7771           set_status_pending (context, suggested_action);
7772           gtk_drag_get_data (widget, context, target, time);
7773         }
7774       else
7775         {
7776           set_status_pending (context, 0);
7777           gdk_drag_status (context, suggested_action, time);
7778         }
7779     }
7780
7781   if (path)
7782     gtk_tree_path_free (path);
7783
7784   return TRUE;
7785 }
7786
7787
7788 static gboolean
7789 gtk_tree_view_drag_drop (GtkWidget        *widget,
7790                          GdkDragContext   *context,
7791                          /* coordinates relative to the widget */
7792                          gint              x,
7793                          gint              y,
7794                          guint             time)
7795 {
7796   GtkTreeView *tree_view;
7797   GtkTreePath *path;
7798   GdkDragAction suggested_action = 0;
7799   GdkAtom target = GDK_NONE;
7800   TreeViewDragInfo *di;
7801   GtkTreeModel *model;
7802   gboolean path_down_mode;
7803   gboolean drop_append_mode;
7804
7805   tree_view = GTK_TREE_VIEW (widget);
7806
7807   model = gtk_tree_view_get_model (tree_view);
7808
7809   remove_scroll_timeout (GTK_TREE_VIEW (widget));
7810   remove_open_timeout (GTK_TREE_VIEW (widget));
7811
7812   di = get_info (tree_view);
7813
7814   if (di == NULL)
7815     return FALSE;
7816
7817   if (!check_model_dnd (model, GTK_TYPE_TREE_DRAG_DEST, "drag_drop"))
7818     return FALSE;
7819
7820   if (!set_destination_row (tree_view, context, x, y, &suggested_action, &target))
7821     return FALSE;
7822
7823   path = get_logical_dest_row (tree_view, &path_down_mode, &drop_append_mode);
7824
7825   if (target != GDK_NONE && path != NULL)
7826     {
7827       /* in case a motion had requested drag data, change things so we
7828        * treat drag data receives as a drop.
7829        */
7830       set_status_pending (context, 0);
7831       set_dest_row (context, model, path,
7832                     path_down_mode, tree_view->priv->empty_view_drop,
7833                     drop_append_mode);
7834     }
7835
7836   if (path)
7837     gtk_tree_path_free (path);
7838
7839   /* Unset this thing */
7840   gtk_tree_view_set_drag_dest_row (GTK_TREE_VIEW (widget),
7841                                    NULL,
7842                                    GTK_TREE_VIEW_DROP_BEFORE);
7843
7844   if (target != GDK_NONE)
7845     {
7846       gtk_drag_get_data (widget, context, target, time);
7847       return TRUE;
7848     }
7849   else
7850     return FALSE;
7851 }
7852
7853 static void
7854 gtk_tree_view_drag_data_received (GtkWidget        *widget,
7855                                   GdkDragContext   *context,
7856                                   /* coordinates relative to the widget */
7857                                   gint              x,
7858                                   gint              y,
7859                                   GtkSelectionData *selection_data,
7860                                   guint             info,
7861                                   guint             time)
7862 {
7863   GtkTreePath *path;
7864   TreeViewDragInfo *di;
7865   gboolean accepted = FALSE;
7866   GtkTreeModel *model;
7867   GtkTreeView *tree_view;
7868   GtkTreePath *dest_row;
7869   GdkDragAction suggested_action;
7870   gboolean path_down_mode;
7871   gboolean drop_append_mode;
7872
7873   tree_view = GTK_TREE_VIEW (widget);
7874
7875   model = gtk_tree_view_get_model (tree_view);
7876
7877   if (!check_model_dnd (model, GTK_TYPE_TREE_DRAG_DEST, "drag_data_received"))
7878     return;
7879
7880   di = get_info (tree_view);
7881
7882   if (di == NULL)
7883     return;
7884
7885   suggested_action = get_status_pending (context);
7886
7887   if (suggested_action)
7888     {
7889       /* We are getting this data due to a request in drag_motion,
7890        * rather than due to a request in drag_drop, so we are just
7891        * supposed to call drag_status, not actually paste in the
7892        * data.
7893        */
7894       path = get_logical_dest_row (tree_view, &path_down_mode,
7895                                    &drop_append_mode);
7896
7897       if (path == NULL)
7898         suggested_action = 0;
7899       else if (path_down_mode)
7900         gtk_tree_path_down (path);
7901
7902       if (suggested_action)
7903         {
7904           if (!gtk_tree_drag_dest_row_drop_possible (GTK_TREE_DRAG_DEST (model),
7905                                                      path,
7906                                                      selection_data))
7907             {
7908               if (path_down_mode)
7909                 {
7910                   path_down_mode = FALSE;
7911                   gtk_tree_path_up (path);
7912
7913                   if (!gtk_tree_drag_dest_row_drop_possible (GTK_TREE_DRAG_DEST (model),
7914                                                              path,
7915                                                              selection_data))
7916                     suggested_action = 0;
7917                 }
7918               else
7919                 suggested_action = 0;
7920             }
7921         }
7922
7923       gdk_drag_status (context, suggested_action, time);
7924
7925       if (path)
7926         gtk_tree_path_free (path);
7927
7928       /* If you can't drop, remove user drop indicator until the next motion */
7929       if (suggested_action == 0)
7930         gtk_tree_view_set_drag_dest_row (GTK_TREE_VIEW (widget),
7931                                          NULL,
7932                                          GTK_TREE_VIEW_DROP_BEFORE);
7933
7934       return;
7935     }
7936
7937   dest_row = get_dest_row (context, &path_down_mode);
7938
7939   if (dest_row == NULL)
7940     return;
7941
7942   if (gtk_selection_data_get_length (selection_data) >= 0)
7943     {
7944       if (path_down_mode)
7945         {
7946           gtk_tree_path_down (dest_row);
7947           if (!gtk_tree_drag_dest_row_drop_possible (GTK_TREE_DRAG_DEST (model),
7948                                                      dest_row, selection_data))
7949             gtk_tree_path_up (dest_row);
7950         }
7951     }
7952
7953   if (gtk_selection_data_get_length (selection_data) >= 0)
7954     {
7955       if (gtk_tree_drag_dest_drag_data_received (GTK_TREE_DRAG_DEST (model),
7956                                                  dest_row,
7957                                                  selection_data))
7958         accepted = TRUE;
7959     }
7960
7961   gtk_drag_finish (context,
7962                    accepted,
7963                    (gdk_drag_context_get_selected_action (context) == GDK_ACTION_MOVE),
7964                    time);
7965
7966   if (gtk_tree_path_get_depth (dest_row) == 1 &&
7967       gtk_tree_path_get_indices (dest_row)[0] == 0 &&
7968       gtk_tree_model_iter_n_children (tree_view->priv->model, NULL) != 0)
7969     {
7970       /* special special case drag to "0", scroll to first item */
7971       if (!tree_view->priv->scroll_to_path)
7972         gtk_tree_view_scroll_to_cell (tree_view, dest_row, NULL, FALSE, 0.0, 0.0);
7973     }
7974
7975   gtk_tree_path_free (dest_row);
7976
7977   /* drop dest_row */
7978   set_dest_row (context, NULL, NULL, FALSE, FALSE, FALSE);
7979 }
7980
7981
7982
7983 /* GtkContainer Methods
7984  */
7985
7986
7987 static void
7988 gtk_tree_view_remove (GtkContainer *container,
7989                       GtkWidget    *widget)
7990 {
7991   GtkTreeView *tree_view = GTK_TREE_VIEW (container);
7992   GtkTreeViewChild *child = NULL;
7993   GList *tmp_list;
7994
7995   tmp_list = tree_view->priv->children;
7996   while (tmp_list)
7997     {
7998       child = tmp_list->data;
7999       if (child->widget == widget)
8000         {
8001           gtk_widget_unparent (widget);
8002
8003           tree_view->priv->children = g_list_remove_link (tree_view->priv->children, tmp_list);
8004           g_list_free_1 (tmp_list);
8005           g_slice_free (GtkTreeViewChild, child);
8006           return;
8007         }
8008
8009       tmp_list = tmp_list->next;
8010     }
8011
8012   tmp_list = tree_view->priv->columns;
8013
8014   while (tmp_list)
8015     {
8016       GtkTreeViewColumn *column;
8017       GtkWidget         *button;
8018
8019       column = tmp_list->data;
8020       button = gtk_tree_view_column_get_button (column);
8021
8022       if (button == widget)
8023         {
8024           gtk_widget_unparent (widget);
8025           return;
8026         }
8027       tmp_list = tmp_list->next;
8028     }
8029 }
8030
8031 static void
8032 gtk_tree_view_forall (GtkContainer *container,
8033                       gboolean      include_internals,
8034                       GtkCallback   callback,
8035                       gpointer      callback_data)
8036 {
8037   GtkTreeView *tree_view = GTK_TREE_VIEW (container);
8038   GtkTreeViewChild *child = NULL;
8039   GtkTreeViewColumn *column;
8040   GtkWidget *button;
8041   GList *tmp_list;
8042
8043   tmp_list = tree_view->priv->children;
8044   while (tmp_list)
8045     {
8046       child = tmp_list->data;
8047       tmp_list = tmp_list->next;
8048
8049       (* callback) (child->widget, callback_data);
8050     }
8051   if (include_internals == FALSE)
8052     return;
8053
8054   for (tmp_list = tree_view->priv->columns; tmp_list; tmp_list = tmp_list->next)
8055     {
8056       column = tmp_list->data;
8057       button = gtk_tree_view_column_get_button (column);
8058
8059       if (button)
8060         (* callback) (button, callback_data);
8061     }
8062 }
8063
8064 /* Returns TRUE is any of the columns contains a cell that can-focus.
8065  * If this is not the case, a column-spanning focus rectangle will be
8066  * drawn.
8067  */
8068 static gboolean
8069 gtk_tree_view_has_can_focus_cell (GtkTreeView *tree_view)
8070 {
8071   GList *list;
8072
8073   for (list = tree_view->priv->columns; list; list = list->next)
8074     {
8075       GtkTreeViewColumn *column = list->data;
8076
8077       if (!gtk_tree_view_column_get_visible (column))
8078         continue;
8079       if (gtk_cell_area_is_activatable (gtk_cell_layout_get_area (GTK_CELL_LAYOUT (column))))
8080         return TRUE;
8081     }
8082
8083   return FALSE;
8084 }
8085
8086 static void
8087 column_sizing_notify (GObject    *object,
8088                       GParamSpec *pspec,
8089                       gpointer    data)
8090 {
8091   GtkTreeViewColumn *c = GTK_TREE_VIEW_COLUMN (object);
8092
8093   if (gtk_tree_view_column_get_sizing (c) != GTK_TREE_VIEW_COLUMN_FIXED)
8094     /* disable fixed height mode */
8095     g_object_set (data, "fixed-height-mode", FALSE, NULL);
8096 }
8097
8098 /**
8099  * gtk_tree_view_set_fixed_height_mode:
8100  * @tree_view: a #GtkTreeView
8101  * @enable: %TRUE to enable fixed height mode
8102  *
8103  * Enables or disables the fixed height mode of @tree_view.
8104  * Fixed height mode speeds up #GtkTreeView by assuming that all
8105  * rows have the same height.
8106  * Only enable this option if all rows are the same height and all
8107  * columns are of type %GTK_TREE_VIEW_COLUMN_FIXED.
8108  *
8109  * Since: 2.6
8110  **/
8111 void
8112 gtk_tree_view_set_fixed_height_mode (GtkTreeView *tree_view,
8113                                      gboolean     enable)
8114 {
8115   GList *l;
8116
8117   enable = enable != FALSE;
8118
8119   if (enable == tree_view->priv->fixed_height_mode)
8120     return;
8121
8122   if (!enable)
8123     {
8124       tree_view->priv->fixed_height_mode = 0;
8125       tree_view->priv->fixed_height = -1;
8126
8127       /* force a revalidation */
8128       install_presize_handler (tree_view);
8129     }
8130   else
8131     {
8132       /* make sure all columns are of type FIXED */
8133       for (l = tree_view->priv->columns; l; l = l->next)
8134         {
8135           GtkTreeViewColumn *c = l->data;
8136
8137           g_return_if_fail (gtk_tree_view_column_get_sizing (c) == GTK_TREE_VIEW_COLUMN_FIXED);
8138         }
8139
8140       /* yes, we really have to do this is in a separate loop */
8141       for (l = tree_view->priv->columns; l; l = l->next)
8142         g_signal_connect (l->data, "notify::sizing",
8143                           G_CALLBACK (column_sizing_notify), tree_view);
8144
8145       tree_view->priv->fixed_height_mode = 1;
8146       tree_view->priv->fixed_height = -1;
8147
8148       if (tree_view->priv->tree)
8149         initialize_fixed_height_mode (tree_view);
8150     }
8151
8152   g_object_notify (G_OBJECT (tree_view), "fixed-height-mode");
8153 }
8154
8155 /**
8156  * gtk_tree_view_get_fixed_height_mode:
8157  * @tree_view: a #GtkTreeView
8158  *
8159  * Returns whether fixed height mode is turned on for @tree_view.
8160  *
8161  * Return value: %TRUE if @tree_view is in fixed height mode
8162  *
8163  * Since: 2.6
8164  **/
8165 gboolean
8166 gtk_tree_view_get_fixed_height_mode (GtkTreeView *tree_view)
8167 {
8168   return tree_view->priv->fixed_height_mode;
8169 }
8170
8171 /* Returns TRUE if the focus is within the headers, after the focus operation is
8172  * done
8173  */
8174 static gboolean
8175 gtk_tree_view_header_focus (GtkTreeView      *tree_view,
8176                             GtkDirectionType  dir,
8177                             gboolean          clamp_column_visible)
8178 {
8179   GtkTreeViewColumn *column;
8180   GtkWidget *focus_child;
8181   GtkWidget *button;
8182   GList *last_column, *first_column;
8183   GList *tmp_list;
8184   gboolean rtl;
8185
8186   if (! tree_view->priv->headers_visible)
8187     return FALSE;
8188
8189   focus_child = gtk_container_get_focus_child (GTK_CONTAINER (tree_view));
8190
8191   first_column = tree_view->priv->columns;
8192   while (first_column)
8193     {
8194       column = GTK_TREE_VIEW_COLUMN (first_column->data);
8195       button = gtk_tree_view_column_get_button (column);
8196
8197       if (gtk_widget_get_can_focus (button) &&
8198           gtk_tree_view_column_get_visible (column) &&
8199           (gtk_tree_view_column_get_clickable (column) ||
8200            gtk_tree_view_column_get_reorderable (column)))
8201         break;
8202       first_column = first_column->next;
8203     }
8204
8205   /* No headers are visible, or are focusable.  We can't focus in or out.
8206    */
8207   if (first_column == NULL)
8208     return FALSE;
8209
8210   last_column = g_list_last (tree_view->priv->columns);
8211   while (last_column)
8212     {
8213       column = GTK_TREE_VIEW_COLUMN (last_column->data);
8214       button = gtk_tree_view_column_get_button (column);
8215
8216       if (gtk_widget_get_can_focus (button) &&
8217           gtk_tree_view_column_get_visible (column) &&
8218           (gtk_tree_view_column_get_clickable (column) ||
8219            gtk_tree_view_column_get_reorderable (column)))
8220         break;
8221       last_column = last_column->prev;
8222     }
8223
8224
8225   rtl = (gtk_widget_get_direction (GTK_WIDGET (tree_view)) == GTK_TEXT_DIR_RTL);
8226
8227   switch (dir)
8228     {
8229     case GTK_DIR_TAB_BACKWARD:
8230     case GTK_DIR_TAB_FORWARD:
8231     case GTK_DIR_UP:
8232     case GTK_DIR_DOWN:
8233       if (focus_child == NULL)
8234         {
8235           if (tree_view->priv->focus_column != NULL)
8236             button = gtk_tree_view_column_get_button (tree_view->priv->focus_column);
8237           else
8238             button = NULL;
8239
8240           if (button && gtk_widget_get_can_focus (button))
8241             focus_child = button;
8242           else
8243             focus_child = gtk_tree_view_column_get_button (GTK_TREE_VIEW_COLUMN (first_column->data));
8244
8245           gtk_widget_grab_focus (focus_child);
8246           break;
8247         }
8248       return FALSE;
8249
8250     case GTK_DIR_LEFT:
8251     case GTK_DIR_RIGHT:
8252       if (focus_child == NULL)
8253         {
8254           if (tree_view->priv->focus_column != NULL)
8255             focus_child = gtk_tree_view_column_get_button (tree_view->priv->focus_column);
8256           else if (dir == GTK_DIR_LEFT)
8257             focus_child = gtk_tree_view_column_get_button (GTK_TREE_VIEW_COLUMN (last_column->data));
8258           else
8259             focus_child = gtk_tree_view_column_get_button (GTK_TREE_VIEW_COLUMN (first_column->data));
8260
8261           gtk_widget_grab_focus (focus_child);
8262           break;
8263         }
8264
8265       if (gtk_widget_child_focus (focus_child, dir))
8266         {
8267           /* The focus moves inside the button. */
8268           /* This is probably a great example of bad UI */
8269           break;
8270         }
8271
8272       /* We need to move the focus among the row of buttons. */
8273       for (tmp_list = tree_view->priv->columns; tmp_list; tmp_list = tmp_list->next)
8274         if (gtk_tree_view_column_get_button (GTK_TREE_VIEW_COLUMN (tmp_list->data)) == focus_child)
8275           break;
8276
8277       if ((tmp_list == first_column && dir == (rtl ? GTK_DIR_RIGHT : GTK_DIR_LEFT))
8278           || (tmp_list == last_column && dir == (rtl ? GTK_DIR_LEFT : GTK_DIR_RIGHT)))
8279         {
8280           gtk_widget_error_bell (GTK_WIDGET (tree_view));
8281           break;
8282         }
8283
8284       while (tmp_list)
8285         {
8286           GtkTreeViewColumn *column;
8287           GtkWidget         *button;
8288
8289           if (dir == (rtl ? GTK_DIR_LEFT : GTK_DIR_RIGHT))
8290             tmp_list = tmp_list->next;
8291           else
8292             tmp_list = tmp_list->prev;
8293
8294           if (tmp_list == NULL)
8295             {
8296               g_warning ("Internal button not found");
8297               break;
8298             }
8299           column = tmp_list->data;
8300           button = gtk_tree_view_column_get_button (column);
8301           if (button &&
8302               gtk_tree_view_column_get_visible (column) &&
8303               gtk_widget_get_can_focus (button))
8304             {
8305               focus_child = button;
8306               gtk_widget_grab_focus (button);
8307               break;
8308             }
8309         }
8310       break;
8311     default:
8312       g_assert_not_reached ();
8313       break;
8314     }
8315
8316   /* if focus child is non-null, we assume it's been set to the current focus child
8317    */
8318   if (focus_child)
8319     {
8320       for (tmp_list = tree_view->priv->columns; tmp_list; tmp_list = tmp_list->next)
8321         if (gtk_tree_view_column_get_button (GTK_TREE_VIEW_COLUMN (tmp_list->data)) == focus_child)
8322           {
8323             _gtk_tree_view_set_focus_column (tree_view, GTK_TREE_VIEW_COLUMN (tmp_list->data));
8324             break;
8325           }
8326
8327       if (clamp_column_visible)
8328         {
8329           gtk_tree_view_clamp_column_visible (tree_view,
8330                                               tree_view->priv->focus_column,
8331                                               FALSE);
8332         }
8333     }
8334
8335   return (focus_child != NULL);
8336 }
8337
8338 /* This function returns in 'path' the first focusable path, if the given path
8339  * is already focusable, it's the returned one.
8340  */
8341 static gboolean
8342 search_first_focusable_path (GtkTreeView  *tree_view,
8343                              GtkTreePath **path,
8344                              gboolean      search_forward,
8345                              GtkRBTree   **new_tree,
8346                              GtkRBNode   **new_node)
8347 {
8348   GtkRBTree *tree = NULL;
8349   GtkRBNode *node = NULL;
8350
8351   if (!path || !*path)
8352     return FALSE;
8353
8354   _gtk_tree_view_find_node (tree_view, *path, &tree, &node);
8355
8356   if (!tree || !node)
8357     return FALSE;
8358
8359   while (node && row_is_separator (tree_view, NULL, *path))
8360     {
8361       if (search_forward)
8362         _gtk_rbtree_next_full (tree, node, &tree, &node);
8363       else
8364         _gtk_rbtree_prev_full (tree, node, &tree, &node);
8365
8366       if (*path)
8367         gtk_tree_path_free (*path);
8368
8369       if (node)
8370         *path = _gtk_tree_path_new_from_rbtree (tree, node);
8371       else
8372         *path = NULL;
8373     }
8374
8375   if (new_tree)
8376     *new_tree = tree;
8377
8378   if (new_node)
8379     *new_node = node;
8380
8381   return (*path != NULL);
8382 }
8383
8384 static gint
8385 gtk_tree_view_focus (GtkWidget        *widget,
8386                      GtkDirectionType  direction)
8387 {
8388   GtkTreeView *tree_view = GTK_TREE_VIEW (widget);
8389   GtkContainer *container = GTK_CONTAINER (widget);
8390   GtkWidget *focus_child;
8391
8392   if (!gtk_widget_is_sensitive (widget) || !gtk_widget_get_can_focus (widget))
8393     return FALSE;
8394
8395   focus_child = gtk_container_get_focus_child (container);
8396
8397   gtk_tree_view_stop_editing (GTK_TREE_VIEW (widget), FALSE);
8398   /* Case 1.  Headers currently have focus. */
8399   if (focus_child)
8400     {
8401       switch (direction)
8402         {
8403         case GTK_DIR_LEFT:
8404         case GTK_DIR_RIGHT:
8405           gtk_tree_view_header_focus (tree_view, direction, TRUE);
8406           return TRUE;
8407         case GTK_DIR_TAB_BACKWARD:
8408         case GTK_DIR_UP:
8409           return FALSE;
8410         case GTK_DIR_TAB_FORWARD:
8411         case GTK_DIR_DOWN:
8412           gtk_widget_grab_focus (widget);
8413           return TRUE;
8414         default:
8415           g_assert_not_reached ();
8416           return FALSE;
8417         }
8418     }
8419
8420   /* Case 2. We don't have focus at all. */
8421   if (!gtk_widget_has_focus (widget))
8422     {
8423       gtk_widget_grab_focus (widget);
8424       return TRUE;
8425     }
8426
8427   /* Case 3. We have focus already. */
8428   if (direction == GTK_DIR_TAB_BACKWARD)
8429     return (gtk_tree_view_header_focus (tree_view, direction, FALSE));
8430   else if (direction == GTK_DIR_TAB_FORWARD)
8431     return FALSE;
8432
8433   /* Other directions caught by the keybindings */
8434   gtk_widget_grab_focus (widget);
8435   return TRUE;
8436 }
8437
8438 static void
8439 gtk_tree_view_grab_focus (GtkWidget *widget)
8440 {
8441   GTK_WIDGET_CLASS (gtk_tree_view_parent_class)->grab_focus (widget);
8442
8443   gtk_tree_view_focus_to_cursor (GTK_TREE_VIEW (widget));
8444 }
8445
8446 static void
8447 gtk_tree_view_style_updated (GtkWidget *widget)
8448 {
8449   GtkTreeView *tree_view = GTK_TREE_VIEW (widget);
8450   GList *list;
8451   GtkTreeViewColumn *column;
8452
8453   GTK_WIDGET_CLASS (gtk_tree_view_parent_class)->style_updated (widget);
8454
8455   if (gtk_widget_get_realized (widget))
8456     {
8457       gtk_tree_view_ensure_background (tree_view);
8458
8459       gtk_tree_view_set_grid_lines (tree_view, tree_view->priv->grid_lines);
8460       gtk_tree_view_set_enable_tree_lines (tree_view, tree_view->priv->tree_lines_enabled);
8461     }
8462
8463   gtk_widget_style_get (widget,
8464                         "expander-size", &tree_view->priv->expander_size,
8465                         NULL);
8466   tree_view->priv->expander_size += EXPANDER_EXTRA_PADDING;
8467
8468   for (list = tree_view->priv->columns; list; list = list->next)
8469     {
8470       column = list->data;
8471       _gtk_tree_view_column_cell_set_dirty (column, TRUE);
8472     }
8473
8474   tree_view->priv->fixed_height = -1;
8475   _gtk_rbtree_mark_invalid (tree_view->priv->tree);
8476
8477   gtk_widget_queue_resize (widget);
8478 }
8479
8480
8481 static void
8482 gtk_tree_view_set_focus_child (GtkContainer *container,
8483                                GtkWidget    *child)
8484 {
8485   GtkTreeView *tree_view = GTK_TREE_VIEW (container);
8486   GList *list;
8487
8488   for (list = tree_view->priv->columns; list; list = list->next)
8489     {
8490       if (gtk_tree_view_column_get_button (GTK_TREE_VIEW_COLUMN (list->data)) == child)
8491         {
8492           _gtk_tree_view_set_focus_column (tree_view, GTK_TREE_VIEW_COLUMN (list->data));
8493           break;
8494         }
8495     }
8496
8497   GTK_CONTAINER_CLASS (gtk_tree_view_parent_class)->set_focus_child (container, child);
8498 }
8499
8500 static GtkWidgetPath *
8501 gtk_tree_view_get_path_for_child (GtkContainer *container,
8502                                   GtkWidget    *child)
8503 {
8504   GtkTreeView *tree_view = GTK_TREE_VIEW (container);
8505   GtkWidgetPath *path;
8506   gboolean rtl;
8507   GList *list;
8508   gint n_col = 0;
8509
8510   path = GTK_CONTAINER_CLASS (gtk_tree_view_parent_class)->get_path_for_child (container, child);
8511   rtl = (gtk_widget_get_direction (GTK_WIDGET (container)) == GTK_TEXT_DIR_RTL);
8512
8513   for (list = (rtl ? g_list_last (tree_view->priv->columns) : g_list_first (tree_view->priv->columns));
8514        list;
8515        list = (rtl ? list->prev : list->next))
8516     {
8517       GtkTreeViewColumn *column = list->data;
8518       GtkRegionFlags flags = 0;
8519
8520       if (!gtk_tree_view_column_get_visible (column))
8521         continue;
8522
8523       n_col++;
8524
8525       if (gtk_tree_view_column_get_widget (column) != child &&
8526           gtk_tree_view_column_get_button (column) != child)
8527         continue;
8528
8529       if ((n_col % 2) == 0)
8530         flags |= GTK_REGION_EVEN;
8531       else
8532         flags |= GTK_REGION_ODD;
8533
8534       if (n_col == 1)
8535         flags |= GTK_REGION_FIRST;
8536
8537       if ((rtl && !list->prev) ||
8538           (!rtl && !list->next))
8539         flags |= GTK_REGION_LAST;
8540
8541       gtk_widget_path_iter_add_region (path, -1, GTK_STYLE_REGION_COLUMN_HEADER, flags);
8542       break;
8543     }
8544
8545   gtk_widget_path_append_for_widget (path, child);
8546
8547   return path;
8548 }
8549
8550 static gboolean
8551 gtk_tree_view_real_move_cursor (GtkTreeView       *tree_view,
8552                                 GtkMovementStep    step,
8553                                 gint               count)
8554 {
8555   GdkModifierType state;
8556
8557   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), FALSE);
8558   g_return_val_if_fail (step == GTK_MOVEMENT_LOGICAL_POSITIONS ||
8559                         step == GTK_MOVEMENT_VISUAL_POSITIONS ||
8560                         step == GTK_MOVEMENT_DISPLAY_LINES ||
8561                         step == GTK_MOVEMENT_PAGES ||
8562                         step == GTK_MOVEMENT_BUFFER_ENDS, FALSE);
8563
8564   if (tree_view->priv->tree == NULL)
8565     return FALSE;
8566   if (!gtk_widget_has_focus (GTK_WIDGET (tree_view)))
8567     return FALSE;
8568
8569   gtk_tree_view_stop_editing (tree_view, FALSE);
8570   tree_view->priv->draw_keyfocus = TRUE;
8571   gtk_widget_grab_focus (GTK_WIDGET (tree_view));
8572
8573   if (gtk_get_current_event_state (&state))
8574     {
8575       GdkModifierType extend_mod_mask;
8576       GdkModifierType modify_mod_mask;
8577
8578       extend_mod_mask =
8579         gtk_widget_get_modifier_mask (GTK_WIDGET (tree_view),
8580                                       GDK_MODIFIER_INTENT_EXTEND_SELECTION);
8581
8582       modify_mod_mask =
8583         gtk_widget_get_modifier_mask (GTK_WIDGET (tree_view),
8584                                       GDK_MODIFIER_INTENT_MODIFY_SELECTION);
8585
8586       if ((state & modify_mod_mask) == modify_mod_mask)
8587         tree_view->priv->modify_selection_pressed = TRUE;
8588       if ((state & extend_mod_mask) == extend_mod_mask)
8589         tree_view->priv->extend_selection_pressed = TRUE;
8590     }
8591   /* else we assume not pressed */
8592
8593   switch (step)
8594     {
8595       /* currently we make no distinction.  When we go bi-di, we need to */
8596     case GTK_MOVEMENT_LOGICAL_POSITIONS:
8597     case GTK_MOVEMENT_VISUAL_POSITIONS:
8598       gtk_tree_view_move_cursor_left_right (tree_view, count);
8599       break;
8600     case GTK_MOVEMENT_DISPLAY_LINES:
8601       gtk_tree_view_move_cursor_up_down (tree_view, count);
8602       break;
8603     case GTK_MOVEMENT_PAGES:
8604       gtk_tree_view_move_cursor_page_up_down (tree_view, count);
8605       break;
8606     case GTK_MOVEMENT_BUFFER_ENDS:
8607       gtk_tree_view_move_cursor_start_end (tree_view, count);
8608       break;
8609     default:
8610       g_assert_not_reached ();
8611     }
8612
8613   tree_view->priv->modify_selection_pressed = FALSE;
8614   tree_view->priv->extend_selection_pressed = FALSE;
8615
8616   return TRUE;
8617 }
8618
8619 static void
8620 gtk_tree_view_put (GtkTreeView *tree_view,
8621                    GtkWidget   *child_widget,
8622                    /* in bin_window coordinates */
8623                    gint         x,
8624                    gint         y,
8625                    gint         width,
8626                    gint         height)
8627 {
8628   GtkTreeViewChild *child;
8629
8630   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
8631   g_return_if_fail (GTK_IS_WIDGET (child_widget));
8632
8633   child = g_slice_new (GtkTreeViewChild);
8634
8635   child->widget = child_widget;
8636   child->x = x;
8637   child->y = y;
8638   child->width = width;
8639   child->height = height;
8640
8641   tree_view->priv->children = g_list_append (tree_view->priv->children, child);
8642
8643   if (gtk_widget_get_realized (GTK_WIDGET (tree_view)))
8644     gtk_widget_set_parent_window (child->widget, tree_view->priv->bin_window);
8645
8646   gtk_widget_set_parent (child_widget, GTK_WIDGET (tree_view));
8647 }
8648
8649 void
8650 _gtk_tree_view_child_move_resize (GtkTreeView *tree_view,
8651                                   GtkWidget   *widget,
8652                                   /* in tree coordinates */
8653                                   gint         x,
8654                                   gint         y,
8655                                   gint         width,
8656                                   gint         height)
8657 {
8658   GtkTreeViewChild *child = NULL;
8659   GList *list;
8660   GdkRectangle allocation;
8661
8662   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
8663   g_return_if_fail (GTK_IS_WIDGET (widget));
8664
8665   for (list = tree_view->priv->children; list; list = list->next)
8666     {
8667       if (((GtkTreeViewChild *)list->data)->widget == widget)
8668         {
8669           child = list->data;
8670           break;
8671         }
8672     }
8673   if (child == NULL)
8674     return;
8675
8676   allocation.x = child->x = x;
8677   allocation.y = child->y = y;
8678   allocation.width = child->width = width;
8679   allocation.height = child->height = height;
8680
8681   if (gtk_widget_get_realized (widget))
8682     gtk_widget_size_allocate (widget, &allocation);
8683 }
8684
8685
8686 /* TreeModel Callbacks
8687  */
8688
8689 static void
8690 gtk_tree_view_row_changed (GtkTreeModel *model,
8691                            GtkTreePath  *path,
8692                            GtkTreeIter  *iter,
8693                            gpointer      data)
8694 {
8695   GtkTreeView *tree_view = (GtkTreeView *)data;
8696   GtkRBTree *tree;
8697   GtkRBNode *node;
8698   gboolean free_path = FALSE;
8699   GList *list;
8700   GtkTreePath *cursor_path;
8701
8702   g_return_if_fail (path != NULL || iter != NULL);
8703
8704   if (tree_view->priv->cursor_node != NULL)
8705     cursor_path = _gtk_tree_path_new_from_rbtree (tree_view->priv->cursor_tree,
8706                                                   tree_view->priv->cursor_node);
8707   else
8708     cursor_path = NULL;
8709
8710   if (tree_view->priv->edited_column &&
8711       (cursor_path == NULL || gtk_tree_path_compare (cursor_path, path) == 0))
8712     gtk_tree_view_stop_editing (tree_view, TRUE);
8713
8714   if (cursor_path != NULL)
8715     gtk_tree_path_free (cursor_path);
8716
8717   if (path == NULL)
8718     {
8719       path = gtk_tree_model_get_path (model, iter);
8720       free_path = TRUE;
8721     }
8722   else if (iter == NULL)
8723     gtk_tree_model_get_iter (model, iter, path);
8724
8725   if (_gtk_tree_view_find_node (tree_view,
8726                                 path,
8727                                 &tree,
8728                                 &node))
8729     /* We aren't actually showing the node */
8730     goto done;
8731
8732   if (tree == NULL)
8733     goto done;
8734
8735   _gtk_tree_view_accessible_changed (tree_view, tree, node);
8736
8737   if (tree_view->priv->fixed_height_mode
8738       && tree_view->priv->fixed_height >= 0)
8739     {
8740       _gtk_rbtree_node_set_height (tree, node, tree_view->priv->fixed_height);
8741       if (gtk_widget_get_realized (GTK_WIDGET (tree_view)))
8742         gtk_tree_view_node_queue_redraw (tree_view, tree, node);
8743     }
8744   else
8745     {
8746       _gtk_rbtree_node_mark_invalid (tree, node);
8747       for (list = tree_view->priv->columns; list; list = list->next)
8748         {
8749           GtkTreeViewColumn *column;
8750
8751           column = list->data;
8752           if (!gtk_tree_view_column_get_visible (column))
8753             continue;
8754
8755           if (gtk_tree_view_column_get_sizing (column) == GTK_TREE_VIEW_COLUMN_AUTOSIZE)
8756             {
8757               _gtk_tree_view_column_cell_set_dirty (column, TRUE);
8758             }
8759         }
8760     }
8761
8762  done:
8763   if (!tree_view->priv->fixed_height_mode &&
8764       gtk_widget_get_realized (GTK_WIDGET (tree_view)))
8765     install_presize_handler (tree_view);
8766   if (free_path)
8767     gtk_tree_path_free (path);
8768 }
8769
8770 static void
8771 gtk_tree_view_row_inserted (GtkTreeModel *model,
8772                             GtkTreePath  *path,
8773                             GtkTreeIter  *iter,
8774                             gpointer      data)
8775 {
8776   GtkTreeView *tree_view = (GtkTreeView *) data;
8777   gint *indices;
8778   GtkRBTree *tree;
8779   GtkRBNode *tmpnode = NULL;
8780   gint depth;
8781   gint i = 0;
8782   gint height;
8783   gboolean free_path = FALSE;
8784   gboolean node_visible = TRUE;
8785
8786   g_return_if_fail (path != NULL || iter != NULL);
8787
8788   if (tree_view->priv->fixed_height_mode
8789       && tree_view->priv->fixed_height >= 0)
8790     height = tree_view->priv->fixed_height;
8791   else
8792     height = 0;
8793
8794   if (path == NULL)
8795     {
8796       path = gtk_tree_model_get_path (model, iter);
8797       free_path = TRUE;
8798     }
8799   else if (iter == NULL)
8800     gtk_tree_model_get_iter (model, iter, path);
8801
8802   if (tree_view->priv->tree == NULL)
8803     tree_view->priv->tree = _gtk_rbtree_new ();
8804
8805   tree = tree_view->priv->tree;
8806
8807   /* Update all row-references */
8808   gtk_tree_row_reference_inserted (G_OBJECT (data), path);
8809   depth = gtk_tree_path_get_depth (path);
8810   indices = gtk_tree_path_get_indices (path);
8811
8812   /* First, find the parent tree */
8813   while (i < depth - 1)
8814     {
8815       if (tree == NULL)
8816         {
8817           /* We aren't showing the node */
8818           node_visible = FALSE;
8819           goto done;
8820         }
8821
8822       tmpnode = _gtk_rbtree_find_count (tree, indices[i] + 1);
8823       if (tmpnode == NULL)
8824         {
8825           g_warning ("A node was inserted with a parent that's not in the tree.\n" \
8826                      "This possibly means that a GtkTreeModel inserted a child node\n" \
8827                      "before the parent was inserted.");
8828           goto done;
8829         }
8830       else if (!GTK_RBNODE_FLAG_SET (tmpnode, GTK_RBNODE_IS_PARENT))
8831         {
8832           /* FIXME enforce correct behavior on model, probably */
8833           /* In theory, the model should have emitted has_child_toggled here.  We
8834            * try to catch it anyway, just to be safe, in case the model hasn't.
8835            */
8836           GtkTreePath *tmppath = _gtk_tree_path_new_from_rbtree (tree, tmpnode);
8837           gtk_tree_view_row_has_child_toggled (model, tmppath, NULL, data);
8838           gtk_tree_path_free (tmppath);
8839           goto done;
8840         }
8841
8842       tree = tmpnode->children;
8843       i++;
8844     }
8845
8846   if (tree == NULL)
8847     {
8848       node_visible = FALSE;
8849       goto done;
8850     }
8851
8852   /* ref the node */
8853   gtk_tree_model_ref_node (tree_view->priv->model, iter);
8854   if (indices[depth - 1] == 0)
8855     {
8856       tmpnode = _gtk_rbtree_find_count (tree, 1);
8857       tmpnode = _gtk_rbtree_insert_before (tree, tmpnode, height, FALSE);
8858     }
8859   else
8860     {
8861       tmpnode = _gtk_rbtree_find_count (tree, indices[depth - 1]);
8862       tmpnode = _gtk_rbtree_insert_after (tree, tmpnode, height, FALSE);
8863     }
8864
8865   _gtk_tree_view_accessible_add (tree_view, tree, tmpnode);
8866
8867  done:
8868   if (height > 0)
8869     {
8870       if (tree)
8871         _gtk_rbtree_node_mark_valid (tree, tmpnode);
8872
8873       if (node_visible && node_is_visible (tree_view, tree, tmpnode))
8874         gtk_widget_queue_resize (GTK_WIDGET (tree_view));
8875       else
8876         gtk_widget_queue_resize_no_redraw (GTK_WIDGET (tree_view));
8877     }
8878   else
8879     install_presize_handler (tree_view);
8880   if (free_path)
8881     gtk_tree_path_free (path);
8882 }
8883
8884 static void
8885 gtk_tree_view_row_has_child_toggled (GtkTreeModel *model,
8886                                      GtkTreePath  *path,
8887                                      GtkTreeIter  *iter,
8888                                      gpointer      data)
8889 {
8890   GtkTreeView *tree_view = (GtkTreeView *)data;
8891   GtkTreeIter real_iter;
8892   gboolean has_child;
8893   GtkRBTree *tree;
8894   GtkRBNode *node;
8895   gboolean free_path = FALSE;
8896
8897   g_return_if_fail (path != NULL || iter != NULL);
8898
8899   if (iter)
8900     real_iter = *iter;
8901
8902   if (path == NULL)
8903     {
8904       path = gtk_tree_model_get_path (model, iter);
8905       free_path = TRUE;
8906     }
8907   else if (iter == NULL)
8908     gtk_tree_model_get_iter (model, &real_iter, path);
8909
8910   if (_gtk_tree_view_find_node (tree_view,
8911                                 path,
8912                                 &tree,
8913                                 &node))
8914     /* We aren't actually showing the node */
8915     goto done;
8916
8917   if (tree == NULL)
8918     goto done;
8919
8920   has_child = gtk_tree_model_iter_has_child (model, &real_iter);
8921   /* Sanity check.
8922    */
8923   if (GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_PARENT) == has_child)
8924     goto done;
8925
8926   if (has_child)
8927     {
8928       GTK_RBNODE_SET_FLAG (node, GTK_RBNODE_IS_PARENT);
8929       _gtk_tree_view_accessible_add_state (tree_view, tree, node, GTK_CELL_RENDERER_EXPANDABLE);
8930     }
8931   else
8932     {
8933       GTK_RBNODE_UNSET_FLAG (node, GTK_RBNODE_IS_PARENT);
8934       _gtk_tree_view_accessible_remove_state (tree_view, tree, node, GTK_CELL_RENDERER_EXPANDABLE);
8935     }
8936
8937   if (has_child && tree_view->priv->is_list)
8938     {
8939       tree_view->priv->is_list = FALSE;
8940       if (tree_view->priv->show_expanders)
8941         {
8942           GList *list;
8943
8944           for (list = tree_view->priv->columns; list; list = list->next)
8945             if (gtk_tree_view_column_get_visible (GTK_TREE_VIEW_COLUMN (list->data)))
8946               {
8947                 _gtk_tree_view_column_cell_set_dirty (GTK_TREE_VIEW_COLUMN (list->data), TRUE);
8948                 break;
8949               }
8950         }
8951       gtk_widget_queue_resize (GTK_WIDGET (tree_view));
8952     }
8953   else
8954     {
8955       _gtk_tree_view_queue_draw_node (tree_view, tree, node, NULL);
8956     }
8957
8958  done:
8959   if (free_path)
8960     gtk_tree_path_free (path);
8961 }
8962
8963 static void
8964 count_children_helper (GtkRBTree *tree,
8965                        GtkRBNode *node,
8966                        gpointer   data)
8967 {
8968   if (node->children)
8969     _gtk_rbtree_traverse (node->children, node->children->root, G_POST_ORDER, count_children_helper, data);
8970   (*((gint *)data))++;
8971 }
8972
8973 static void
8974 check_selection_helper (GtkRBTree *tree,
8975                         GtkRBNode *node,
8976                         gpointer   data)
8977 {
8978   gint *value = (gint *)data;
8979
8980   *value |= GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_SELECTED);
8981
8982   if (node->children && !*value)
8983     _gtk_rbtree_traverse (node->children, node->children->root, G_POST_ORDER, check_selection_helper, data);
8984 }
8985
8986 static void
8987 gtk_tree_view_row_deleted (GtkTreeModel *model,
8988                            GtkTreePath  *path,
8989                            gpointer      data)
8990 {
8991   GtkTreeView *tree_view = (GtkTreeView *)data;
8992   GtkRBTree *tree;
8993   GtkRBNode *node;
8994   GList *list;
8995   gboolean selection_changed = FALSE, cursor_changed = FALSE;
8996   GtkRBTree *cursor_tree = NULL;
8997   GtkRBNode *cursor_node = NULL;
8998   GtkStyleContext *context;
8999
9000   g_return_if_fail (path != NULL);
9001
9002   gtk_tree_row_reference_deleted (G_OBJECT (data), path);
9003
9004   if (_gtk_tree_view_find_node (tree_view, path, &tree, &node))
9005     return;
9006
9007   if (tree == NULL)
9008     return;
9009
9010   /* check if the selection has been changed */
9011   _gtk_rbtree_traverse (tree, node, G_POST_ORDER,
9012                         check_selection_helper, &selection_changed);
9013
9014   for (list = tree_view->priv->columns; list; list = list->next)
9015     if (gtk_tree_view_column_get_visible (GTK_TREE_VIEW_COLUMN (list->data)) &&
9016         gtk_tree_view_column_get_sizing (GTK_TREE_VIEW_COLUMN (list->data)) == GTK_TREE_VIEW_COLUMN_AUTOSIZE)
9017       _gtk_tree_view_column_cell_set_dirty ((GtkTreeViewColumn *)list->data, TRUE);
9018
9019   /* Ensure we don't have a dangling pointer to a dead node */
9020   ensure_unprelighted (tree_view);
9021
9022   /* Cancel editting if we've started */
9023   gtk_tree_view_stop_editing (tree_view, TRUE);
9024
9025   /* If the cursor row got deleted, move the cursor to the next row */
9026   if (tree_view->priv->cursor_node &&
9027       (tree_view->priv->cursor_node == node ||
9028        (node->children && (tree_view->priv->cursor_tree == node->children ||
9029                            _gtk_rbtree_contains (node->children, tree_view->priv->cursor_tree)))))
9030     {
9031       GtkTreePath *cursor_path;
9032
9033       cursor_tree = tree;
9034       cursor_node = _gtk_rbtree_next (tree, node);
9035       /* find the first node that is not going to be deleted */
9036       while (cursor_node == NULL && cursor_tree->parent_tree)
9037         {
9038           cursor_node = _gtk_rbtree_next (cursor_tree->parent_tree,
9039                                           cursor_tree->parent_node);
9040           cursor_tree = cursor_tree->parent_tree;
9041         }
9042
9043       if (cursor_node != NULL)
9044         cursor_path = _gtk_tree_path_new_from_rbtree (cursor_tree, cursor_node);
9045       else
9046         cursor_path = NULL;
9047
9048       if (cursor_path == NULL ||
9049           ! search_first_focusable_path (tree_view, &cursor_path, TRUE,
9050                                          &cursor_tree, &cursor_node))
9051         {
9052           /* It looks like we reached the end of the view without finding
9053            * a focusable row.  We will step backwards to find the last
9054            * focusable row.
9055            */
9056           _gtk_rbtree_prev_full (tree, node, &cursor_tree, &cursor_node);
9057           if (cursor_node)
9058             {
9059               cursor_path = _gtk_tree_path_new_from_rbtree (cursor_tree, cursor_node);
9060               if (! search_first_focusable_path (tree_view, &cursor_path, FALSE,
9061                                                  &cursor_tree, &cursor_node))
9062                 cursor_node = NULL;
9063               gtk_tree_path_free (cursor_path);
9064             }
9065         }
9066       else if (cursor_path)
9067         gtk_tree_path_free (cursor_path);
9068
9069       cursor_changed = TRUE;
9070     }
9071
9072   if (tree_view->priv->destroy_count_func)
9073     {
9074       gint child_count = 0;
9075       if (node->children)
9076         _gtk_rbtree_traverse (node->children, node->children->root, G_POST_ORDER, count_children_helper, &child_count);
9077       tree_view->priv->destroy_count_func (tree_view, path, child_count, tree_view->priv->destroy_count_data);
9078     }
9079
9080   if (tree->root->count == 1)
9081     {
9082       if (tree_view->priv->tree == tree)
9083         tree_view->priv->tree = NULL;
9084
9085       _gtk_tree_view_accessible_remove_state (tree_view,
9086                                               tree->parent_tree, tree->parent_node,
9087                                               GTK_CELL_RENDERER_EXPANDED);
9088       _gtk_tree_view_accessible_remove (tree_view, tree, NULL);
9089       _gtk_rbtree_remove (tree);
9090     }
9091   else
9092     {
9093       _gtk_tree_view_accessible_remove (tree_view, tree, node);
9094       _gtk_rbtree_remove_node (tree, node);
9095     }
9096
9097   if (! gtk_tree_row_reference_valid (tree_view->priv->top_row))
9098     {
9099       gtk_tree_row_reference_free (tree_view->priv->top_row);
9100       tree_view->priv->top_row = NULL;
9101     }
9102
9103   /* Cancel any ongoing animation happening within the row */
9104   context = gtk_widget_get_style_context (GTK_WIDGET (tree_view));
9105   gtk_style_context_cancel_animations (context, node);
9106
9107   install_scroll_sync_handler (tree_view);
9108
9109   gtk_widget_queue_resize (GTK_WIDGET (tree_view));
9110
9111   if (cursor_changed)
9112     {
9113       if (cursor_node)
9114         {
9115           GtkTreePath *cursor_path = _gtk_tree_path_new_from_rbtree (cursor_tree, cursor_node);
9116           gtk_tree_view_real_set_cursor (tree_view, cursor_path, CLEAR_AND_SELECT | CURSOR_INVALID);
9117           gtk_tree_path_free (cursor_path);
9118         }
9119       else
9120         gtk_tree_view_real_set_cursor (tree_view, NULL, CLEAR_AND_SELECT | CURSOR_INVALID);
9121     }
9122   if (selection_changed)
9123     g_signal_emit_by_name (tree_view->priv->selection, "changed");
9124 }
9125
9126 static void
9127 gtk_tree_view_rows_reordered (GtkTreeModel *model,
9128                               GtkTreePath  *parent,
9129                               GtkTreeIter  *iter,
9130                               gint         *new_order,
9131                               gpointer      data)
9132 {
9133   GtkTreeView *tree_view = GTK_TREE_VIEW (data);
9134   GtkRBTree *tree;
9135   GtkRBNode *node;
9136   gint len;
9137
9138   len = gtk_tree_model_iter_n_children (model, iter);
9139
9140   if (len < 2)
9141     return;
9142
9143   gtk_tree_row_reference_reordered (G_OBJECT (data),
9144                                     parent,
9145                                     iter,
9146                                     new_order);
9147
9148   if (_gtk_tree_view_find_node (tree_view,
9149                                 parent,
9150                                 &tree,
9151                                 &node))
9152     return;
9153
9154   /* We need to special case the parent path */
9155   if (tree == NULL)
9156     tree = tree_view->priv->tree;
9157   else
9158     tree = node->children;
9159
9160   if (tree == NULL)
9161     return;
9162
9163   if (tree_view->priv->edited_column)
9164     gtk_tree_view_stop_editing (tree_view, TRUE);
9165
9166   /* we need to be unprelighted */
9167   ensure_unprelighted (tree_view);
9168
9169   _gtk_rbtree_reorder (tree, new_order, len);
9170
9171   _gtk_tree_view_accessible_reorder (tree_view);
9172
9173   gtk_widget_queue_draw (GTK_WIDGET (tree_view));
9174
9175   gtk_tree_view_dy_to_top_row (tree_view);
9176 }
9177
9178
9179 /* Internal tree functions
9180  */
9181
9182
9183 static void
9184 gtk_tree_view_get_background_xrange (GtkTreeView       *tree_view,
9185                                      GtkRBTree         *tree,
9186                                      GtkTreeViewColumn *column,
9187                                      gint              *x1,
9188                                      gint              *x2)
9189 {
9190   GtkTreeViewColumn *tmp_column = NULL;
9191   gint total_width;
9192   GList *list;
9193   gboolean rtl;
9194
9195   if (x1)
9196     *x1 = 0;
9197
9198   if (x2)
9199     *x2 = 0;
9200
9201   rtl = (gtk_widget_get_direction (GTK_WIDGET (tree_view)) == GTK_TEXT_DIR_RTL);
9202
9203   total_width = 0;
9204   for (list = (rtl ? g_list_last (tree_view->priv->columns) : g_list_first (tree_view->priv->columns));
9205        list;
9206        list = (rtl ? list->prev : list->next))
9207     {
9208       tmp_column = list->data;
9209
9210       if (tmp_column == column)
9211         break;
9212
9213       if (gtk_tree_view_column_get_visible (tmp_column))
9214         total_width += gtk_tree_view_column_get_width (tmp_column);
9215     }
9216
9217   if (tmp_column != column)
9218     {
9219       g_warning (G_STRLOC": passed-in column isn't in the tree");
9220       return;
9221     }
9222
9223   if (x1)
9224     *x1 = total_width;
9225
9226   if (x2)
9227     {
9228       if (gtk_tree_view_column_get_visible (column))
9229         *x2 = total_width + gtk_tree_view_column_get_width (column);
9230       else
9231         *x2 = total_width; /* width of 0 */
9232     }
9233 }
9234
9235 static void
9236 gtk_tree_view_get_arrow_xrange (GtkTreeView *tree_view,
9237                                 GtkRBTree   *tree,
9238                                 gint        *x1,
9239                                 gint        *x2)
9240 {
9241   gint x_offset = 0;
9242   GList *list;
9243   GtkTreeViewColumn *tmp_column = NULL;
9244   gint total_width;
9245   gboolean indent_expanders;
9246   gboolean rtl;
9247
9248   rtl = (gtk_widget_get_direction (GTK_WIDGET (tree_view)) == GTK_TEXT_DIR_RTL);
9249
9250   total_width = 0;
9251   for (list = (rtl ? g_list_last (tree_view->priv->columns) : g_list_first (tree_view->priv->columns));
9252        list;
9253        list = (rtl ? list->prev : list->next))
9254     {
9255       tmp_column = list->data;
9256
9257       if (gtk_tree_view_is_expander_column (tree_view, tmp_column))
9258         {
9259           if (rtl)
9260             x_offset = total_width + gtk_tree_view_column_get_width (tmp_column) - tree_view->priv->expander_size;
9261           else
9262             x_offset = total_width;
9263           break;
9264         }
9265
9266       if (gtk_tree_view_column_get_visible (tmp_column))
9267         total_width += gtk_tree_view_column_get_width (tmp_column);
9268     }
9269
9270   gtk_widget_style_get (GTK_WIDGET (tree_view),
9271                         "indent-expanders", &indent_expanders,
9272                         NULL);
9273
9274   if (indent_expanders)
9275     {
9276       if (rtl)
9277         x_offset -= tree_view->priv->expander_size * _gtk_rbtree_get_depth (tree);
9278       else
9279         x_offset += tree_view->priv->expander_size * _gtk_rbtree_get_depth (tree);
9280     }
9281
9282   *x1 = x_offset;
9283
9284   if (tmp_column &&
9285       gtk_tree_view_column_get_visible (tmp_column))
9286     /* +1 because x2 isn't included in the range. */
9287     *x2 = *x1 + tree_view->priv->expander_size + 1;
9288   else
9289     *x2 = *x1;
9290 }
9291
9292 static void
9293 gtk_tree_view_build_tree (GtkTreeView *tree_view,
9294                           GtkRBTree   *tree,
9295                           GtkTreeIter *iter,
9296                           gint         depth,
9297                           gboolean     recurse)
9298 {
9299   GtkRBNode *temp = NULL;
9300   GtkTreePath *path = NULL;
9301
9302   do
9303     {
9304       gtk_tree_model_ref_node (tree_view->priv->model, iter);
9305       temp = _gtk_rbtree_insert_after (tree, temp, 0, FALSE);
9306
9307       if (tree_view->priv->fixed_height > 0)
9308         {
9309           if (GTK_RBNODE_FLAG_SET (temp, GTK_RBNODE_INVALID))
9310             {
9311               _gtk_rbtree_node_set_height (tree, temp, tree_view->priv->fixed_height);
9312               _gtk_rbtree_node_mark_valid (tree, temp);
9313             }
9314         }
9315
9316       if (tree_view->priv->is_list)
9317         continue;
9318
9319       if (recurse)
9320         {
9321           GtkTreeIter child;
9322
9323           if (!path)
9324             path = gtk_tree_model_get_path (tree_view->priv->model, iter);
9325           else
9326             gtk_tree_path_next (path);
9327
9328           if (gtk_tree_model_iter_children (tree_view->priv->model, &child, iter))
9329             {
9330               gboolean expand;
9331
9332               g_signal_emit (tree_view, tree_view_signals[TEST_EXPAND_ROW], 0, iter, path, &expand);
9333
9334               if (gtk_tree_model_iter_has_child (tree_view->priv->model, iter)
9335                   && !expand)
9336                 {
9337                   temp->children = _gtk_rbtree_new ();
9338                   temp->children->parent_tree = tree;
9339                   temp->children->parent_node = temp;
9340                   gtk_tree_view_build_tree (tree_view, temp->children, &child, depth + 1, recurse);
9341                 }
9342             }
9343         }
9344
9345       if (gtk_tree_model_iter_has_child (tree_view->priv->model, iter))
9346         {
9347           if ((temp->flags&GTK_RBNODE_IS_PARENT) != GTK_RBNODE_IS_PARENT)
9348             temp->flags ^= GTK_RBNODE_IS_PARENT;
9349         }
9350     }
9351   while (gtk_tree_model_iter_next (tree_view->priv->model, iter));
9352
9353   if (path)
9354     gtk_tree_path_free (path);
9355 }
9356
9357 /* Make sure the node is visible vertically */
9358 static void
9359 gtk_tree_view_clamp_node_visible (GtkTreeView *tree_view,
9360                                   GtkRBTree   *tree,
9361                                   GtkRBNode   *node)
9362 {
9363   gint node_dy, height;
9364   GtkTreePath *path = NULL;
9365
9366   if (!gtk_widget_get_realized (GTK_WIDGET (tree_view)))
9367     return;
9368
9369   /* just return if the node is visible, avoiding a costly expose */
9370   node_dy = _gtk_rbtree_node_find_offset (tree, node);
9371   height = gtk_tree_view_get_row_height (tree_view, node);
9372   if (! GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_INVALID)
9373       && node_dy >= gtk_adjustment_get_value (tree_view->priv->vadjustment)
9374       && node_dy + height <= (gtk_adjustment_get_value (tree_view->priv->vadjustment)
9375                               + gtk_adjustment_get_page_size (tree_view->priv->vadjustment)))
9376     return;
9377
9378   path = _gtk_tree_path_new_from_rbtree (tree, node);
9379   if (path)
9380     {
9381       /* We process updates because we want to clear old selected items when we scroll.
9382        * if this is removed, we get a "selection streak" at the bottom. */
9383       gtk_tree_view_bin_process_updates (tree_view);
9384
9385       gtk_tree_view_scroll_to_cell (tree_view, path, NULL, FALSE, 0.0, 0.0);
9386       gtk_tree_path_free (path);
9387     }
9388 }
9389
9390 static void
9391 gtk_tree_view_clamp_column_visible (GtkTreeView       *tree_view,
9392                                     GtkTreeViewColumn *column,
9393                                     gboolean           focus_to_cell)
9394 {
9395   GtkAllocation allocation;
9396   gint x, width;
9397
9398   if (column == NULL)
9399     return;
9400
9401   gtk_widget_get_allocation (gtk_tree_view_column_get_button (column), &allocation);
9402   x = allocation.x;
9403   width = allocation.width;
9404
9405   if (width > gtk_adjustment_get_page_size (tree_view->priv->hadjustment))
9406     {
9407       /* The column is larger than the horizontal page size.  If the
9408        * column has cells which can be focussed individually, then we make
9409        * sure the cell which gets focus is fully visible (if even the
9410        * focus cell is bigger than the page size, we make sure the
9411        * left-hand side of the cell is visible).
9412        *
9413        * If the column does not have an activatable cell, we
9414        * make sure the left-hand side of the column is visible.
9415        */
9416
9417       if (focus_to_cell && gtk_tree_view_has_can_focus_cell (tree_view))
9418         {
9419           GtkCellArea *cell_area;
9420           GtkCellRenderer *focus_cell;
9421
9422           cell_area = gtk_cell_layout_get_area (GTK_CELL_LAYOUT (column));
9423           focus_cell = gtk_cell_area_get_focus_cell (cell_area);
9424
9425           if (gtk_tree_view_column_cell_get_position (column, focus_cell,
9426                                                       &x, &width))
9427             {
9428               if (width < gtk_adjustment_get_page_size (tree_view->priv->hadjustment))
9429                 {
9430                   if (gtk_adjustment_get_value (tree_view->priv->hadjustment) + gtk_adjustment_get_page_size (tree_view->priv->hadjustment) < x + width)
9431                     gtk_adjustment_set_value (tree_view->priv->hadjustment,
9432                                               x + width - gtk_adjustment_get_page_size (tree_view->priv->hadjustment));
9433                   else if (gtk_adjustment_get_value (tree_view->priv->hadjustment) > x)
9434                     gtk_adjustment_set_value (tree_view->priv->hadjustment, x);
9435                 }
9436             }
9437         }
9438
9439       gtk_adjustment_set_value (tree_view->priv->hadjustment, x);
9440     }
9441   else
9442     {
9443       if ((gtk_adjustment_get_value (tree_view->priv->hadjustment) + gtk_adjustment_get_page_size (tree_view->priv->hadjustment)) < (x + width))
9444           gtk_adjustment_set_value (tree_view->priv->hadjustment,
9445                                     x + width - gtk_adjustment_get_page_size (tree_view->priv->hadjustment));
9446       else if (gtk_adjustment_get_value (tree_view->priv->hadjustment) > x)
9447         gtk_adjustment_set_value (tree_view->priv->hadjustment, x);
9448   }
9449 }
9450
9451 /* This function could be more efficient.  I'll optimize it if profiling seems
9452  * to imply that it is important */
9453 GtkTreePath *
9454 _gtk_tree_path_new_from_rbtree (GtkRBTree   *tree,
9455                                 GtkRBNode   *node)
9456 {
9457   GtkTreePath *path;
9458   GtkRBTree *tmp_tree;
9459   GtkRBNode *tmp_node, *last;
9460   gint count;
9461
9462   path = gtk_tree_path_new ();
9463
9464   g_return_val_if_fail (node != NULL, path);
9465
9466   count = 1 + node->left->count;
9467
9468   last = node;
9469   tmp_node = node->parent;
9470   tmp_tree = tree;
9471   while (tmp_tree)
9472     {
9473       while (!_gtk_rbtree_is_nil (tmp_node))
9474         {
9475           if (tmp_node->right == last)
9476             count += 1 + tmp_node->left->count;
9477           last = tmp_node;
9478           tmp_node = tmp_node->parent;
9479         }
9480       gtk_tree_path_prepend_index (path, count - 1);
9481       last = tmp_tree->parent_node;
9482       tmp_tree = tmp_tree->parent_tree;
9483       if (last)
9484         {
9485           count = 1 + last->left->count;
9486           tmp_node = last->parent;
9487         }
9488     }
9489   return path;
9490 }
9491
9492 /* Returns TRUE if we ran out of tree before finding the path.  If the path is
9493  * invalid (ie. points to a node that's not in the tree), *tree and *node are
9494  * both set to NULL.
9495  */
9496 gboolean
9497 _gtk_tree_view_find_node (GtkTreeView  *tree_view,
9498                           GtkTreePath  *path,
9499                           GtkRBTree   **tree,
9500                           GtkRBNode   **node)
9501 {
9502   GtkRBNode *tmpnode = NULL;
9503   GtkRBTree *tmptree = tree_view->priv->tree;
9504   gint *indices = gtk_tree_path_get_indices (path);
9505   gint depth = gtk_tree_path_get_depth (path);
9506   gint i = 0;
9507
9508   *node = NULL;
9509   *tree = NULL;
9510
9511   if (depth == 0 || tmptree == NULL)
9512     return FALSE;
9513   do
9514     {
9515       tmpnode = _gtk_rbtree_find_count (tmptree, indices[i] + 1);
9516       ++i;
9517       if (tmpnode == NULL)
9518         {
9519           *tree = NULL;
9520           *node = NULL;
9521           return FALSE;
9522         }
9523       if (i >= depth)
9524         {
9525           *tree = tmptree;
9526           *node = tmpnode;
9527           return FALSE;
9528         }
9529       *tree = tmptree;
9530       *node = tmpnode;
9531       tmptree = tmpnode->children;
9532       if (tmptree == NULL)
9533         return TRUE;
9534     }
9535   while (1);
9536 }
9537
9538 static gboolean
9539 gtk_tree_view_is_expander_column (GtkTreeView       *tree_view,
9540                                   GtkTreeViewColumn *column)
9541 {
9542   GList *list;
9543
9544   if (tree_view->priv->is_list)
9545     return FALSE;
9546
9547   if (tree_view->priv->expander_column != NULL)
9548     {
9549       if (tree_view->priv->expander_column == column)
9550         return TRUE;
9551       return FALSE;
9552     }
9553   else
9554     {
9555       for (list = tree_view->priv->columns;
9556            list;
9557            list = list->next)
9558         if (gtk_tree_view_column_get_visible (GTK_TREE_VIEW_COLUMN (list->data)))
9559           break;
9560       if (list && list->data == column)
9561         return TRUE;
9562     }
9563   return FALSE;
9564 }
9565
9566 static inline gboolean
9567 gtk_tree_view_draw_expanders (GtkTreeView *tree_view)
9568 {
9569   if (!tree_view->priv->is_list && tree_view->priv->show_expanders)
9570     return TRUE;
9571   /* else */
9572   return FALSE;
9573 }
9574
9575 static void
9576 gtk_tree_view_add_move_binding (GtkBindingSet  *binding_set,
9577                                 guint           keyval,
9578                                 guint           modmask,
9579                                 gboolean        add_shifted_binding,
9580                                 GtkMovementStep step,
9581                                 gint            count)
9582 {
9583
9584   gtk_binding_entry_add_signal (binding_set, keyval, modmask,
9585                                 "move-cursor", 2,
9586                                 G_TYPE_ENUM, step,
9587                                 G_TYPE_INT, count);
9588
9589   if (add_shifted_binding)
9590     gtk_binding_entry_add_signal (binding_set, keyval, GDK_SHIFT_MASK,
9591                                   "move-cursor", 2,
9592                                   G_TYPE_ENUM, step,
9593                                   G_TYPE_INT, count);
9594
9595   if ((modmask & GDK_CONTROL_MASK) == GDK_CONTROL_MASK)
9596    return;
9597
9598   gtk_binding_entry_add_signal (binding_set, keyval, GDK_CONTROL_MASK | GDK_SHIFT_MASK,
9599                                 "move-cursor", 2,
9600                                 G_TYPE_ENUM, step,
9601                                 G_TYPE_INT, count);
9602
9603   gtk_binding_entry_add_signal (binding_set, keyval, GDK_CONTROL_MASK,
9604                                 "move-cursor", 2,
9605                                 G_TYPE_ENUM, step,
9606                                 G_TYPE_INT, count);
9607 }
9608
9609 static gint
9610 gtk_tree_view_unref_tree_helper (GtkTreeModel *model,
9611                                  GtkTreeIter  *iter,
9612                                  GtkRBTree    *tree,
9613                                  GtkRBNode    *node)
9614 {
9615   gint retval = FALSE;
9616   do
9617     {
9618       g_return_val_if_fail (node != NULL, FALSE);
9619
9620       if (node->children)
9621         {
9622           GtkTreeIter child;
9623           GtkRBTree *new_tree;
9624           GtkRBNode *new_node;
9625
9626           new_tree = node->children;
9627           new_node = _gtk_rbtree_first (new_tree);
9628
9629           if (!gtk_tree_model_iter_children (model, &child, iter))
9630             return FALSE;
9631
9632           retval = gtk_tree_view_unref_tree_helper (model, &child, new_tree, new_node) | retval;
9633         }
9634
9635       if (GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_SELECTED))
9636         retval = TRUE;
9637       gtk_tree_model_unref_node (model, iter);
9638       node = _gtk_rbtree_next (tree, node);
9639     }
9640   while (gtk_tree_model_iter_next (model, iter));
9641
9642   return retval;
9643 }
9644
9645 static gint
9646 gtk_tree_view_unref_and_check_selection_tree (GtkTreeView *tree_view,
9647                                               GtkRBTree   *tree)
9648 {
9649   GtkTreeIter iter;
9650   GtkTreePath *path;
9651   GtkRBNode *node;
9652   gint retval;
9653
9654   if (!tree)
9655     return FALSE;
9656
9657   node = _gtk_rbtree_first (tree);
9658
9659   g_return_val_if_fail (node != NULL, FALSE);
9660   path = _gtk_tree_path_new_from_rbtree (tree, node);
9661   gtk_tree_model_get_iter (GTK_TREE_MODEL (tree_view->priv->model),
9662                            &iter, path);
9663   retval = gtk_tree_view_unref_tree_helper (GTK_TREE_MODEL (tree_view->priv->model), &iter, tree, node);
9664   gtk_tree_path_free (path);
9665
9666   return retval;
9667 }
9668
9669 static void
9670 gtk_tree_view_set_column_drag_info (GtkTreeView       *tree_view,
9671                                     GtkTreeViewColumn *column)
9672 {
9673   GtkTreeViewColumn *left_column;
9674   GtkTreeViewColumn *cur_column = NULL;
9675   GtkTreeViewColumnReorder *reorder;
9676   gboolean rtl;
9677   GList *tmp_list;
9678   gint left;
9679
9680   /* We want to precalculate the motion list such that we know what column slots
9681    * are available.
9682    */
9683   left_column = NULL;
9684   rtl = (gtk_widget_get_direction (GTK_WIDGET (tree_view)) == GTK_TEXT_DIR_RTL);
9685
9686   /* First, identify all possible drop spots */
9687   if (rtl)
9688     tmp_list = g_list_last (tree_view->priv->columns);
9689   else
9690     tmp_list = g_list_first (tree_view->priv->columns);
9691
9692   while (tmp_list)
9693     {
9694       cur_column = GTK_TREE_VIEW_COLUMN (tmp_list->data);
9695       tmp_list = rtl?g_list_previous (tmp_list):g_list_next (tmp_list);
9696
9697       if (gtk_tree_view_column_get_visible (cur_column) == FALSE)
9698         continue;
9699
9700       /* If it's not the column moving and func tells us to skip over the column, we continue. */
9701       if (left_column != column && cur_column != column &&
9702           tree_view->priv->column_drop_func &&
9703           ! tree_view->priv->column_drop_func (tree_view, column, left_column, cur_column, tree_view->priv->column_drop_func_data))
9704         {
9705           left_column = cur_column;
9706           continue;
9707         }
9708       reorder = g_slice_new0 (GtkTreeViewColumnReorder);
9709       reorder->left_column = left_column;
9710       left_column = reorder->right_column = cur_column;
9711
9712       tree_view->priv->column_drag_info = g_list_append (tree_view->priv->column_drag_info, reorder);
9713     }
9714
9715   /* Add the last one */
9716   if (tree_view->priv->column_drop_func == NULL ||
9717       ((left_column != column) &&
9718        tree_view->priv->column_drop_func (tree_view, column, left_column, NULL, tree_view->priv->column_drop_func_data)))
9719     {
9720       reorder = g_slice_new0 (GtkTreeViewColumnReorder);
9721       reorder->left_column = left_column;
9722       reorder->right_column = NULL;
9723       tree_view->priv->column_drag_info = g_list_append (tree_view->priv->column_drag_info, reorder);
9724     }
9725
9726   /* We quickly check to see if it even makes sense to reorder columns. */
9727   /* If there is nothing that can be moved, then we return */
9728
9729   if (tree_view->priv->column_drag_info == NULL)
9730     return;
9731
9732   /* We know there are always 2 slots possbile, as you can always return column. */
9733   /* If that's all there is, return */
9734   if (tree_view->priv->column_drag_info->next == NULL ||
9735       (tree_view->priv->column_drag_info->next->next == NULL &&
9736        ((GtkTreeViewColumnReorder *)tree_view->priv->column_drag_info->data)->right_column == column &&
9737        ((GtkTreeViewColumnReorder *)tree_view->priv->column_drag_info->next->data)->left_column == column))
9738     {
9739       for (tmp_list = tree_view->priv->column_drag_info; tmp_list; tmp_list = tmp_list->next)
9740         g_slice_free (GtkTreeViewColumnReorder, tmp_list->data);
9741       g_list_free (tree_view->priv->column_drag_info);
9742       tree_view->priv->column_drag_info = NULL;
9743       return;
9744     }
9745   /* We fill in the ranges for the columns, now that we've isolated them */
9746   left = - TREE_VIEW_COLUMN_DRAG_DEAD_MULTIPLIER (tree_view);
9747
9748   for (tmp_list = tree_view->priv->column_drag_info; tmp_list; tmp_list = tmp_list->next)
9749     {
9750       reorder = (GtkTreeViewColumnReorder *) tmp_list->data;
9751
9752       reorder->left_align = left;
9753       if (tmp_list->next != NULL)
9754         {
9755           GtkAllocation right_allocation, left_allocation;
9756           GtkWidget    *left_button, *right_button;
9757
9758           g_assert (tmp_list->next->data);
9759
9760           right_button = gtk_tree_view_column_get_button (reorder->right_column);
9761           left_button  = gtk_tree_view_column_get_button
9762             (((GtkTreeViewColumnReorder *)tmp_list->next->data)->left_column);
9763
9764           gtk_widget_get_allocation (right_button, &right_allocation);
9765           gtk_widget_get_allocation (left_button, &left_allocation);
9766           left = reorder->right_align = (right_allocation.x + right_allocation.width + left_allocation.x) / 2;
9767         }
9768       else
9769         {
9770           reorder->right_align = gdk_window_get_width (tree_view->priv->header_window)
9771                                  + TREE_VIEW_COLUMN_DRAG_DEAD_MULTIPLIER (tree_view);
9772         }
9773     }
9774 }
9775
9776 void
9777 _gtk_tree_view_column_start_drag (GtkTreeView       *tree_view,
9778                                   GtkTreeViewColumn *column,
9779                                   GdkDevice         *device)
9780 {
9781   GdkEvent *send_event;
9782   GtkAllocation allocation;
9783   GtkAllocation button_allocation;
9784   GdkScreen *screen = gtk_widget_get_screen (GTK_WIDGET (tree_view));
9785   GtkWidget *button;
9786   GdkDevice *pointer, *keyboard;
9787
9788   g_return_if_fail (tree_view->priv->column_drag_info == NULL);
9789   g_return_if_fail (tree_view->priv->cur_reorder == NULL);
9790
9791   gtk_tree_view_set_column_drag_info (tree_view, column);
9792
9793   if (tree_view->priv->column_drag_info == NULL)
9794     return;
9795
9796   button = gtk_tree_view_column_get_button (column);
9797
9798   if (tree_view->priv->drag_window == NULL)
9799     {
9800       GdkWindowAttr attributes;
9801       guint attributes_mask;
9802
9803       gtk_widget_get_allocation (button, &button_allocation);
9804
9805       attributes.window_type = GDK_WINDOW_CHILD;
9806       attributes.wclass = GDK_INPUT_OUTPUT;
9807       attributes.x = button_allocation.x;
9808       attributes.y = 0;
9809       attributes.width = button_allocation.width;
9810       attributes.height = button_allocation.height;
9811       attributes.visual = gtk_widget_get_visual (GTK_WIDGET (tree_view));
9812       attributes.event_mask = GDK_VISIBILITY_NOTIFY_MASK | GDK_EXPOSURE_MASK | GDK_POINTER_MOTION_MASK;
9813       attributes_mask = GDK_WA_X | GDK_WA_Y | GDK_WA_VISUAL;
9814
9815       tree_view->priv->drag_window = gdk_window_new (tree_view->priv->bin_window,
9816                                                      &attributes,
9817                                                      attributes_mask);
9818       gdk_window_set_user_data (tree_view->priv->drag_window, GTK_WIDGET (tree_view));
9819     }
9820
9821   if (gdk_device_get_source (device) == GDK_SOURCE_KEYBOARD)
9822     {
9823       keyboard = device;
9824       pointer = gdk_device_get_associated_device (device);
9825     }
9826   else
9827     {
9828       pointer = device;
9829       keyboard = gdk_device_get_associated_device (device);
9830     }
9831
9832   gdk_device_ungrab (pointer, GDK_CURRENT_TIME);
9833   gdk_device_ungrab (keyboard, GDK_CURRENT_TIME);
9834
9835   gtk_grab_remove (button);
9836
9837   send_event = gdk_event_new (GDK_LEAVE_NOTIFY);
9838   send_event->crossing.send_event = TRUE;
9839   send_event->crossing.window = g_object_ref (gtk_button_get_event_window (GTK_BUTTON (button)));
9840   send_event->crossing.subwindow = NULL;
9841   send_event->crossing.detail = GDK_NOTIFY_ANCESTOR;
9842   send_event->crossing.time = GDK_CURRENT_TIME;
9843   gdk_event_set_device (send_event, device);
9844
9845   gtk_propagate_event (button, send_event);
9846   gdk_event_free (send_event);
9847
9848   send_event = gdk_event_new (GDK_BUTTON_RELEASE);
9849   send_event->button.window = g_object_ref (gdk_screen_get_root_window (screen));
9850   send_event->button.send_event = TRUE;
9851   send_event->button.time = GDK_CURRENT_TIME;
9852   send_event->button.x = -1;
9853   send_event->button.y = -1;
9854   send_event->button.axes = NULL;
9855   send_event->button.state = 0;
9856   send_event->button.button = GDK_BUTTON_PRIMARY;
9857   send_event->button.x_root = 0;
9858   send_event->button.y_root = 0;
9859   gdk_event_set_device (send_event, device);
9860
9861   gtk_propagate_event (button, send_event);
9862   gdk_event_free (send_event);
9863
9864   /* Kids, don't try this at home */
9865   g_object_ref (button);
9866   gtk_container_remove (GTK_CONTAINER (tree_view), button);
9867   gtk_widget_set_parent_window (button, tree_view->priv->drag_window);
9868   gtk_widget_set_parent (button, GTK_WIDGET (tree_view));
9869   g_object_unref (button);
9870
9871   gtk_widget_get_allocation (button, &button_allocation);
9872   tree_view->priv->drag_column_x = button_allocation.x;
9873   allocation = button_allocation;
9874   allocation.x = 0;
9875   gtk_widget_size_allocate (button, &allocation);
9876   gtk_widget_set_parent_window (button, tree_view->priv->drag_window);
9877
9878   tree_view->priv->drag_column = column;
9879   gdk_window_show (tree_view->priv->drag_window);
9880
9881   gtk_widget_grab_focus (GTK_WIDGET (tree_view));
9882   while (gtk_events_pending ())
9883     gtk_main_iteration ();
9884
9885   tree_view->priv->in_column_drag = TRUE;
9886
9887   gdk_device_grab (pointer,
9888                    tree_view->priv->drag_window,
9889                    GDK_OWNERSHIP_NONE,
9890                    FALSE,
9891                    GDK_POINTER_MOTION_MASK|GDK_BUTTON_RELEASE_MASK,
9892                    NULL,
9893                    GDK_CURRENT_TIME);
9894   gdk_device_grab (keyboard,
9895                    tree_view->priv->drag_window,
9896                    GDK_OWNERSHIP_NONE,
9897                    FALSE,
9898                    GDK_KEY_PRESS_MASK|GDK_KEY_RELEASE_MASK,
9899                    NULL,
9900                    GDK_CURRENT_TIME);
9901 }
9902
9903 static void
9904 gtk_tree_view_queue_draw_arrow (GtkTreeView        *tree_view,
9905                                 GtkRBTree          *tree,
9906                                 GtkRBNode          *node)
9907 {
9908   GtkAllocation allocation;
9909   GdkRectangle rect;
9910
9911   if (!gtk_widget_get_realized (GTK_WIDGET (tree_view)))
9912     return;
9913
9914   gtk_widget_get_allocation (GTK_WIDGET (tree_view), &allocation);
9915   rect.x = 0;
9916   rect.width = MAX (tree_view->priv->expander_size, MAX (tree_view->priv->width, allocation.width));
9917
9918   rect.y = gtk_tree_view_get_row_y_offset (tree_view, tree, node);
9919   rect.height = gtk_tree_view_get_row_height (tree_view, node);
9920
9921   gdk_window_invalidate_rect (tree_view->priv->bin_window, &rect, TRUE);
9922 }
9923
9924 void
9925 _gtk_tree_view_queue_draw_node (GtkTreeView        *tree_view,
9926                                 GtkRBTree          *tree,
9927                                 GtkRBNode          *node,
9928                                 const GdkRectangle *clip_rect)
9929 {
9930   GtkAllocation allocation;
9931   GdkRectangle rect;
9932
9933   if (!gtk_widget_get_realized (GTK_WIDGET (tree_view)))
9934     return;
9935
9936   gtk_widget_get_allocation (GTK_WIDGET (tree_view), &allocation);
9937   rect.x = 0;
9938   rect.width = MAX (tree_view->priv->width, allocation.width);
9939
9940   rect.y = gtk_tree_view_get_row_y_offset (tree_view, tree, node);
9941   rect.height = gtk_tree_view_get_row_height (tree_view, node);
9942
9943   if (clip_rect)
9944     {
9945       GdkRectangle new_rect;
9946
9947       gdk_rectangle_intersect (clip_rect, &rect, &new_rect);
9948
9949       gdk_window_invalidate_rect (tree_view->priv->bin_window, &new_rect, TRUE);
9950     }
9951   else
9952     {
9953       gdk_window_invalidate_rect (tree_view->priv->bin_window, &rect, TRUE);
9954     }
9955 }
9956
9957 static inline gint
9958 gtk_tree_view_get_effective_header_height (GtkTreeView *tree_view)
9959 {
9960   if (tree_view->priv->headers_visible)
9961     return tree_view->priv->header_height;
9962   /* else */
9963   return 0;
9964 }
9965
9966 gint
9967 _gtk_tree_view_get_header_height (GtkTreeView *tree_view)
9968 {
9969   return tree_view->priv->header_height;
9970 }
9971
9972 void
9973 _gtk_tree_view_get_row_separator_func (GtkTreeView                 *tree_view,
9974                                        GtkTreeViewRowSeparatorFunc *func,
9975                                        gpointer                    *data)
9976 {
9977   *func = tree_view->priv->row_separator_func;
9978   *data = tree_view->priv->row_separator_data;
9979 }
9980
9981 GtkTreePath *
9982 _gtk_tree_view_get_anchor_path (GtkTreeView *tree_view)
9983 {
9984   if (tree_view->priv->anchor)
9985     return gtk_tree_row_reference_get_path (tree_view->priv->anchor);
9986
9987   return NULL;
9988 }
9989
9990 void
9991 _gtk_tree_view_set_anchor_path (GtkTreeView *tree_view,
9992                                 GtkTreePath *anchor_path)
9993 {
9994   if (tree_view->priv->anchor)
9995     {
9996       gtk_tree_row_reference_free (tree_view->priv->anchor);
9997       tree_view->priv->anchor = NULL;
9998     }
9999
10000   if (anchor_path && tree_view->priv->model)
10001     tree_view->priv->anchor =
10002       gtk_tree_row_reference_new_proxy (G_OBJECT (tree_view),
10003                                         tree_view->priv->model, anchor_path);
10004 }
10005
10006 GtkRBTree *
10007 _gtk_tree_view_get_rbtree (GtkTreeView *tree_view)
10008 {
10009   return tree_view->priv->tree;
10010 }
10011
10012 GdkWindow *
10013 _gtk_tree_view_get_header_window (GtkTreeView *tree_view)
10014 {
10015   return tree_view->priv->header_window;
10016 }
10017
10018 void
10019 _gtk_tree_view_set_focus_column (GtkTreeView       *tree_view,
10020                                  GtkTreeViewColumn *column)
10021 {
10022   tree_view->priv->focus_column = column;
10023 }
10024
10025
10026 static void
10027 gtk_tree_view_queue_draw_path (GtkTreeView        *tree_view,
10028                                GtkTreePath        *path,
10029                                const GdkRectangle *clip_rect)
10030 {
10031   GtkRBTree *tree = NULL;
10032   GtkRBNode *node = NULL;
10033
10034   _gtk_tree_view_find_node (tree_view, path, &tree, &node);
10035
10036   if (tree)
10037     _gtk_tree_view_queue_draw_node (tree_view, tree, node, clip_rect);
10038 }
10039
10040 /* x and y are the mouse position
10041  */
10042 static void
10043 gtk_tree_view_draw_arrow (GtkTreeView *tree_view,
10044                           cairo_t     *cr,
10045                           GtkRBTree   *tree,
10046                           GtkRBNode   *node)
10047 {
10048   GdkRectangle area;
10049   GtkStateFlags state = 0;
10050   GtkStyleContext *context;
10051   GtkWidget *widget;
10052   gint x_offset = 0;
10053   gint x2;
10054   gint vertical_separator;
10055   gint expander_size;
10056   GtkCellRendererState flags = 0;
10057
10058   widget = GTK_WIDGET (tree_view);
10059   context = gtk_widget_get_style_context (widget);
10060
10061   gtk_widget_style_get (widget,
10062                         "vertical-separator", &vertical_separator,
10063                         NULL);
10064   expander_size = tree_view->priv->expander_size - EXPANDER_EXTRA_PADDING;
10065
10066   if (! GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_PARENT))
10067     return;
10068
10069   gtk_tree_view_get_arrow_xrange (tree_view, tree, &x_offset, &x2);
10070
10071   area.x = x_offset;
10072   area.y = gtk_tree_view_get_cell_area_y_offset (tree_view, tree, node,
10073                                                  vertical_separator);
10074   area.width = expander_size;
10075   area.height = gtk_tree_view_get_cell_area_height (tree_view, node,
10076                                                     vertical_separator);
10077
10078   if (GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_SELECTED))
10079     flags |= GTK_CELL_RENDERER_SELECTED;
10080
10081   if (node == tree_view->priv->prelight_node &&
10082       tree_view->priv->arrow_prelit)
10083     flags |= GTK_CELL_RENDERER_PRELIT;
10084
10085   state = gtk_cell_renderer_get_state (NULL, widget, flags);
10086
10087   if (node->children != NULL)
10088     state |= GTK_STATE_FLAG_ACTIVE;
10089   else
10090     state &= ~(GTK_STATE_FLAG_ACTIVE);
10091
10092   gtk_style_context_save (context);
10093
10094   gtk_style_context_set_state (context, state);
10095   gtk_style_context_add_class (context, GTK_STYLE_CLASS_EXPANDER);
10096
10097   gtk_style_context_push_animatable_region (context, node);
10098
10099   gtk_render_expander (context, cr,
10100                        area.x, area.y,
10101                        area.width, area.height);
10102
10103   gtk_style_context_pop_animatable_region (context);
10104   gtk_style_context_restore (context);
10105 }
10106
10107 static void
10108 gtk_tree_view_focus_to_cursor (GtkTreeView *tree_view)
10109
10110 {
10111   GtkTreePath *cursor_path;
10112
10113   if ((tree_view->priv->tree == NULL) ||
10114       (! gtk_widget_get_realized (GTK_WIDGET (tree_view))))
10115     return;
10116
10117   cursor_path = NULL;
10118   if (tree_view->priv->cursor_node)
10119     cursor_path = _gtk_tree_path_new_from_rbtree (tree_view->priv->cursor_tree,
10120                                                   tree_view->priv->cursor_node);
10121
10122   if (cursor_path == NULL)
10123     {
10124       /* Consult the selection before defaulting to the
10125        * first focusable element
10126        */
10127       GList *selected_rows;
10128       GtkTreeModel *model;
10129       GtkTreeSelection *selection;
10130
10131       selection = gtk_tree_view_get_selection (tree_view);
10132       selected_rows = gtk_tree_selection_get_selected_rows (selection, &model);
10133
10134       if (selected_rows)
10135         {
10136           cursor_path = gtk_tree_path_copy((const GtkTreePath *)(selected_rows->data));
10137           g_list_free_full (selected_rows, (GDestroyNotify) gtk_tree_path_free);
10138         }
10139       else
10140         {
10141           cursor_path = gtk_tree_path_new_first ();
10142           search_first_focusable_path (tree_view, &cursor_path,
10143                                        TRUE, NULL, NULL);
10144         }
10145
10146       if (cursor_path)
10147         {
10148           if (gtk_tree_selection_get_mode (tree_view->priv->selection) == GTK_SELECTION_MULTIPLE)
10149             gtk_tree_view_real_set_cursor (tree_view, cursor_path, 0);
10150           else
10151             gtk_tree_view_real_set_cursor (tree_view, cursor_path, CLEAR_AND_SELECT);
10152         }
10153     }
10154
10155   if (cursor_path)
10156     {
10157       tree_view->priv->draw_keyfocus = TRUE;
10158
10159       gtk_tree_view_queue_draw_path (tree_view, cursor_path, NULL);
10160       gtk_tree_path_free (cursor_path);
10161
10162       if (tree_view->priv->focus_column == NULL)
10163         {
10164           GList *list;
10165           for (list = tree_view->priv->columns; list; list = list->next)
10166             {
10167               if (gtk_tree_view_column_get_visible (GTK_TREE_VIEW_COLUMN (list->data)))
10168                 {
10169                   GtkCellArea *cell_area;
10170
10171                   _gtk_tree_view_set_focus_column (tree_view, GTK_TREE_VIEW_COLUMN (list->data));
10172
10173                   /* This happens when the treeview initially grabs focus and there
10174                    * is no column in focus, here we explicitly focus into the first cell */
10175                   cell_area = gtk_cell_layout_get_area (GTK_CELL_LAYOUT (tree_view->priv->focus_column));
10176                   if (!gtk_cell_area_get_focus_cell (cell_area))
10177                     {
10178                       gboolean rtl;
10179
10180                       rtl = (gtk_widget_get_direction (GTK_WIDGET (tree_view)) == GTK_TEXT_DIR_RTL);
10181                       gtk_cell_area_focus (cell_area,
10182                                            rtl ? GTK_DIR_LEFT : GTK_DIR_RIGHT);
10183                     }
10184
10185                   break;
10186                 }
10187             }
10188         }
10189     }
10190 }
10191
10192 static void
10193 gtk_tree_view_move_cursor_up_down (GtkTreeView *tree_view,
10194                                    gint         count)
10195 {
10196   gint selection_count;
10197   GtkRBTree *new_cursor_tree = NULL;
10198   GtkRBNode *new_cursor_node = NULL;
10199   GtkTreePath *cursor_path = NULL;
10200   gboolean grab_focus = TRUE;
10201   gboolean selectable;
10202   GtkDirectionType direction;
10203   GtkCellArea *cell_area = NULL;
10204   GtkCellRenderer *last_focus_cell = NULL;
10205   GtkTreeIter iter;
10206
10207   if (! gtk_widget_has_focus (GTK_WIDGET (tree_view)))
10208     return;
10209
10210   if (tree_view->priv->cursor_node == NULL)
10211     return;
10212
10213   cursor_path = _gtk_tree_path_new_from_rbtree (tree_view->priv->cursor_tree,
10214                                                 tree_view->priv->cursor_node);
10215
10216   direction = count < 0 ? GTK_DIR_UP : GTK_DIR_DOWN;
10217
10218   if (tree_view->priv->focus_column)
10219     cell_area = gtk_cell_layout_get_area (GTK_CELL_LAYOUT (tree_view->priv->focus_column));
10220
10221   /* If focus stays in the area for this row, then just return for this round */
10222   if (cell_area && (count == -1 || count == 1) &&
10223       gtk_tree_model_get_iter (tree_view->priv->model, &iter, cursor_path))
10224     {
10225       gtk_tree_view_column_cell_set_cell_data (tree_view->priv->focus_column,
10226                                                tree_view->priv->model,
10227                                                &iter,
10228                                                GTK_RBNODE_FLAG_SET (tree_view->priv->cursor_node, GTK_RBNODE_IS_PARENT),
10229                                                tree_view->priv->cursor_node->children ? TRUE : FALSE);
10230
10231       /* Save the last cell that had focus, if we hit the end of the view we'll give
10232        * focus back to it. */
10233       last_focus_cell = gtk_cell_area_get_focus_cell (cell_area);
10234
10235       /* If focus stays in the area, no need to change the cursor row */
10236       if (gtk_cell_area_focus (cell_area, direction))
10237         return;
10238     }
10239
10240   selection_count = gtk_tree_selection_count_selected_rows (tree_view->priv->selection);
10241   selectable = _gtk_tree_selection_row_is_selectable (tree_view->priv->selection,
10242                                                       tree_view->priv->cursor_node,
10243                                                       cursor_path);
10244
10245   if (selection_count == 0
10246       && gtk_tree_selection_get_mode (tree_view->priv->selection) != GTK_SELECTION_NONE
10247       && !tree_view->priv->modify_selection_pressed
10248       && selectable)
10249     {
10250       /* Don't move the cursor, but just select the current node */
10251       new_cursor_tree = tree_view->priv->cursor_tree;
10252       new_cursor_node = tree_view->priv->cursor_node;
10253     }
10254   else
10255     {
10256       if (count == -1)
10257         _gtk_rbtree_prev_full (tree_view->priv->cursor_tree, tree_view->priv->cursor_node,
10258                                &new_cursor_tree, &new_cursor_node);
10259       else
10260         _gtk_rbtree_next_full (tree_view->priv->cursor_tree, tree_view->priv->cursor_node,
10261                                &new_cursor_tree, &new_cursor_node);
10262     }
10263
10264   gtk_tree_path_free (cursor_path);
10265
10266   if (new_cursor_node)
10267     {
10268       cursor_path = _gtk_tree_path_new_from_rbtree (new_cursor_tree, new_cursor_node);
10269
10270       search_first_focusable_path (tree_view, &cursor_path,
10271                                    (count != -1),
10272                                    &new_cursor_tree,
10273                                    &new_cursor_node);
10274
10275       if (cursor_path)
10276         gtk_tree_path_free (cursor_path);
10277     }
10278
10279   /*
10280    * If the list has only one item and multi-selection is set then select
10281    * the row (if not yet selected).
10282    */
10283   if (gtk_tree_selection_get_mode (tree_view->priv->selection) == GTK_SELECTION_MULTIPLE &&
10284       new_cursor_node == NULL)
10285     {
10286       if (count == -1)
10287         _gtk_rbtree_next_full (tree_view->priv->cursor_tree, tree_view->priv->cursor_node,
10288                                &new_cursor_tree, &new_cursor_node);
10289       else
10290         _gtk_rbtree_prev_full (tree_view->priv->cursor_tree, tree_view->priv->cursor_node,
10291                                &new_cursor_tree, &new_cursor_node);
10292
10293       if (new_cursor_node == NULL
10294           && !GTK_RBNODE_FLAG_SET (tree_view->priv->cursor_node, GTK_RBNODE_IS_SELECTED))
10295         {
10296           new_cursor_node = tree_view->priv->cursor_node;
10297           new_cursor_tree = tree_view->priv->cursor_tree;
10298         }
10299       else
10300         {
10301           new_cursor_tree = NULL;
10302           new_cursor_node = NULL;
10303         }
10304     }
10305
10306   if (new_cursor_node)
10307     {
10308       cursor_path = _gtk_tree_path_new_from_rbtree (new_cursor_tree, new_cursor_node);
10309       gtk_tree_view_real_set_cursor (tree_view, cursor_path, CLEAR_AND_SELECT | CLAMP_NODE);
10310       gtk_tree_path_free (cursor_path);
10311
10312       /* Give focus to the area in the new row */
10313       if (cell_area)
10314         gtk_cell_area_focus (cell_area, direction);
10315     }
10316   else
10317     {
10318       gtk_tree_view_clamp_node_visible (tree_view,
10319                                         tree_view->priv->cursor_tree,
10320                                         tree_view->priv->cursor_node);
10321
10322       if (!tree_view->priv->extend_selection_pressed)
10323         {
10324           if (! gtk_widget_keynav_failed (GTK_WIDGET (tree_view),
10325                                           count < 0 ?
10326                                           GTK_DIR_UP : GTK_DIR_DOWN))
10327             {
10328               GtkWidget *toplevel = gtk_widget_get_toplevel (GTK_WIDGET (tree_view));
10329
10330               if (toplevel)
10331                 gtk_widget_child_focus (toplevel,
10332                                         count < 0 ?
10333                                         GTK_DIR_TAB_BACKWARD :
10334                                         GTK_DIR_TAB_FORWARD);
10335
10336               grab_focus = FALSE;
10337             }
10338         }
10339       else
10340         {
10341           gtk_widget_error_bell (GTK_WIDGET (tree_view));
10342         }
10343
10344       if (cell_area)
10345         gtk_cell_area_set_focus_cell (cell_area, last_focus_cell);
10346     }
10347
10348   if (grab_focus)
10349     gtk_widget_grab_focus (GTK_WIDGET (tree_view));
10350 }
10351
10352 static void
10353 gtk_tree_view_move_cursor_page_up_down (GtkTreeView *tree_view,
10354                                         gint         count)
10355 {
10356   GtkTreePath *old_cursor_path = NULL;
10357   GtkTreePath *cursor_path = NULL;
10358   GtkRBTree *start_cursor_tree = NULL;
10359   GtkRBNode *start_cursor_node = NULL;
10360   GtkRBTree *cursor_tree;
10361   GtkRBNode *cursor_node;
10362   gint y;
10363   gint window_y;
10364   gint vertical_separator;
10365
10366   if (!gtk_widget_has_focus (GTK_WIDGET (tree_view)))
10367     return;
10368
10369   if (tree_view->priv->cursor_node == NULL)
10370     return;
10371
10372   old_cursor_path = _gtk_tree_path_new_from_rbtree (tree_view->priv->cursor_tree,
10373                                                     tree_view->priv->cursor_node);
10374
10375   gtk_widget_style_get (GTK_WIDGET (tree_view), "vertical-separator", &vertical_separator, NULL);
10376
10377   y = _gtk_rbtree_node_find_offset (tree_view->priv->cursor_tree, tree_view->priv->cursor_node);
10378   window_y = RBTREE_Y_TO_TREE_WINDOW_Y (tree_view, y);
10379   y += tree_view->priv->cursor_offset;
10380   y += count * (int)gtk_adjustment_get_page_increment (tree_view->priv->vadjustment);
10381   y = CLAMP (y, (gint)gtk_adjustment_get_lower (tree_view->priv->vadjustment),  (gint)gtk_adjustment_get_upper (tree_view->priv->vadjustment) - vertical_separator);
10382
10383   if (y >= tree_view->priv->height)
10384     y = tree_view->priv->height - 1;
10385
10386   tree_view->priv->cursor_offset =
10387     _gtk_rbtree_find_offset (tree_view->priv->tree, y,
10388                              &cursor_tree, &cursor_node);
10389
10390   if (cursor_tree == NULL)
10391     {
10392       /* FIXME: we lost the cursor.  Should we try to get one? */
10393       gtk_tree_path_free (old_cursor_path);
10394       return;
10395     }
10396
10397   if (tree_view->priv->cursor_offset
10398       > gtk_tree_view_get_row_height (tree_view, cursor_node))
10399     {
10400       _gtk_rbtree_next_full (cursor_tree, cursor_node,
10401                              &cursor_tree, &cursor_node);
10402       tree_view->priv->cursor_offset -= gtk_tree_view_get_row_height (tree_view, cursor_node);
10403     }
10404
10405   y -= tree_view->priv->cursor_offset;
10406   cursor_path = _gtk_tree_path_new_from_rbtree (cursor_tree, cursor_node);
10407
10408   start_cursor_tree = cursor_tree;
10409   start_cursor_node = cursor_node;
10410
10411   if (! search_first_focusable_path (tree_view, &cursor_path,
10412                                      (count != -1),
10413                                      &cursor_tree, &cursor_node))
10414     {
10415       /* It looks like we reached the end of the view without finding
10416        * a focusable row.  We will step backwards to find the last
10417        * focusable row.
10418        */
10419       cursor_tree = start_cursor_tree;
10420       cursor_node = start_cursor_node;
10421       cursor_path = _gtk_tree_path_new_from_rbtree (cursor_tree, cursor_node);
10422
10423       search_first_focusable_path (tree_view, &cursor_path,
10424                                    (count == -1),
10425                                    &cursor_tree, &cursor_node);
10426     }
10427
10428   if (!cursor_path)
10429     goto cleanup;
10430
10431   /* update y */
10432   y = _gtk_rbtree_node_find_offset (cursor_tree, cursor_node);
10433
10434   gtk_tree_view_real_set_cursor (tree_view, cursor_path, CLEAR_AND_SELECT);
10435
10436   y -= window_y;
10437   gtk_tree_view_scroll_to_point (tree_view, -1, y);
10438   gtk_tree_view_clamp_node_visible (tree_view, cursor_tree, cursor_node);
10439   _gtk_tree_view_queue_draw_node (tree_view, cursor_tree, cursor_node, NULL);
10440
10441   if (!gtk_tree_path_compare (old_cursor_path, cursor_path))
10442     gtk_widget_error_bell (GTK_WIDGET (tree_view));
10443
10444   gtk_widget_grab_focus (GTK_WIDGET (tree_view));
10445
10446 cleanup:
10447   gtk_tree_path_free (old_cursor_path);
10448   gtk_tree_path_free (cursor_path);
10449 }
10450
10451 static void
10452 gtk_tree_view_move_cursor_left_right (GtkTreeView *tree_view,
10453                                       gint         count)
10454 {
10455   GtkTreePath *cursor_path = NULL;
10456   GtkTreeViewColumn *column;
10457   GtkTreeIter iter;
10458   GList *list;
10459   gboolean found_column = FALSE;
10460   gboolean rtl;
10461   GtkDirectionType direction;
10462   GtkCellArea     *cell_area;
10463   GtkCellRenderer *last_focus_cell = NULL;
10464   GtkCellArea     *last_focus_area = NULL;
10465
10466   rtl = (gtk_widget_get_direction (GTK_WIDGET (tree_view)) == GTK_TEXT_DIR_RTL);
10467
10468   if (!gtk_widget_has_focus (GTK_WIDGET (tree_view)))
10469     return;
10470
10471   if (tree_view->priv->cursor_node == NULL)
10472     return;
10473
10474   cursor_path = _gtk_tree_path_new_from_rbtree (tree_view->priv->cursor_tree,
10475                                                 tree_view->priv->cursor_node);
10476
10477   if (gtk_tree_model_get_iter (tree_view->priv->model, &iter, cursor_path) == FALSE)
10478     {
10479       gtk_tree_path_free (cursor_path);
10480       return;
10481     }
10482   gtk_tree_path_free (cursor_path);
10483
10484   list = rtl ? g_list_last (tree_view->priv->columns) : g_list_first (tree_view->priv->columns);
10485   if (tree_view->priv->focus_column)
10486     {
10487       /* Save the cell/area we are moving focus from, if moving the cursor
10488        * by one step hits the end we'll set focus back here */
10489       last_focus_area = gtk_cell_layout_get_area (GTK_CELL_LAYOUT (tree_view->priv->focus_column));
10490       last_focus_cell = gtk_cell_area_get_focus_cell (last_focus_area);
10491
10492       for (; list; list = (rtl ? list->prev : list->next))
10493         {
10494           if (list->data == tree_view->priv->focus_column)
10495             break;
10496         }
10497     }
10498
10499   direction = count > 0 ? GTK_DIR_RIGHT : GTK_DIR_LEFT;
10500
10501   while (list)
10502     {
10503       column = list->data;
10504       if (gtk_tree_view_column_get_visible (column) == FALSE)
10505         goto loop_end;
10506
10507       gtk_tree_view_column_cell_set_cell_data (column,
10508                                                tree_view->priv->model,
10509                                                &iter,
10510                                                GTK_RBNODE_FLAG_SET (tree_view->priv->cursor_node, GTK_RBNODE_IS_PARENT),
10511                                                tree_view->priv->cursor_node->children ? TRUE : FALSE);
10512
10513       cell_area = gtk_cell_layout_get_area (GTK_CELL_LAYOUT (column));
10514       if (gtk_cell_area_focus (cell_area, direction))
10515         {
10516           _gtk_tree_view_set_focus_column (tree_view, column);
10517           found_column = TRUE;
10518           break;
10519         }
10520
10521     loop_end:
10522       if (count == 1)
10523         list = rtl ? list->prev : list->next;
10524       else
10525         list = rtl ? list->next : list->prev;
10526     }
10527
10528   if (found_column)
10529     {
10530       if (!gtk_tree_view_has_can_focus_cell (tree_view))
10531         _gtk_tree_view_queue_draw_node (tree_view,
10532                                         tree_view->priv->cursor_tree,
10533                                         tree_view->priv->cursor_node,
10534                                         NULL);
10535       g_signal_emit (tree_view, tree_view_signals[CURSOR_CHANGED], 0);
10536       gtk_widget_grab_focus (GTK_WIDGET (tree_view));
10537     }
10538   else
10539     {
10540       gtk_widget_error_bell (GTK_WIDGET (tree_view));
10541
10542       if (last_focus_area)
10543         gtk_cell_area_set_focus_cell (last_focus_area, last_focus_cell);
10544     }
10545
10546   gtk_tree_view_clamp_column_visible (tree_view,
10547                                       tree_view->priv->focus_column, TRUE);
10548 }
10549
10550 static void
10551 gtk_tree_view_move_cursor_start_end (GtkTreeView *tree_view,
10552                                      gint         count)
10553 {
10554   GtkRBTree *cursor_tree;
10555   GtkRBNode *cursor_node;
10556   GtkTreePath *path;
10557   GtkTreePath *old_path;
10558
10559   if (!gtk_widget_has_focus (GTK_WIDGET (tree_view)))
10560     return;
10561
10562   g_return_if_fail (tree_view->priv->tree != NULL);
10563
10564   gtk_tree_view_get_cursor (tree_view, &old_path, NULL);
10565
10566   cursor_tree = tree_view->priv->tree;
10567
10568   if (count == -1)
10569     {
10570       cursor_node = _gtk_rbtree_first (cursor_tree);
10571
10572       /* Now go forward to find the first focusable row. */
10573       path = _gtk_tree_path_new_from_rbtree (cursor_tree, cursor_node);
10574       search_first_focusable_path (tree_view, &path,
10575                                    TRUE, &cursor_tree, &cursor_node);
10576     }
10577   else
10578     {
10579       cursor_node = cursor_tree->root;
10580
10581       do
10582         {
10583           while (cursor_node && !_gtk_rbtree_is_nil (cursor_node->right))
10584             cursor_node = cursor_node->right;
10585           if (cursor_node->children == NULL)
10586             break;
10587
10588           cursor_tree = cursor_node->children;
10589           cursor_node = cursor_tree->root;
10590         }
10591       while (1);
10592
10593       /* Now go backwards to find last focusable row. */
10594       path = _gtk_tree_path_new_from_rbtree (cursor_tree, cursor_node);
10595       search_first_focusable_path (tree_view, &path,
10596                                    FALSE, &cursor_tree, &cursor_node);
10597     }
10598
10599   if (!path)
10600     goto cleanup;
10601
10602   if (gtk_tree_path_compare (old_path, path))
10603     {
10604       gtk_tree_view_real_set_cursor (tree_view, path, CLEAR_AND_SELECT | CLAMP_NODE);
10605       gtk_widget_grab_focus (GTK_WIDGET (tree_view));
10606     }
10607   else
10608     {
10609       gtk_widget_error_bell (GTK_WIDGET (tree_view));
10610     }
10611
10612 cleanup:
10613   gtk_tree_path_free (old_path);
10614   gtk_tree_path_free (path);
10615 }
10616
10617 static gboolean
10618 gtk_tree_view_real_select_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_select_all (tree_view->priv->selection);
10627
10628   return TRUE;
10629 }
10630
10631 static gboolean
10632 gtk_tree_view_real_unselect_all (GtkTreeView *tree_view)
10633 {
10634   if (!gtk_widget_has_focus (GTK_WIDGET (tree_view)))
10635     return FALSE;
10636
10637   if (gtk_tree_selection_get_mode (tree_view->priv->selection) != GTK_SELECTION_MULTIPLE)
10638     return FALSE;
10639
10640   gtk_tree_selection_unselect_all (tree_view->priv->selection);
10641
10642   return TRUE;
10643 }
10644
10645 static gboolean
10646 gtk_tree_view_real_select_cursor_row (GtkTreeView *tree_view,
10647                                       gboolean     start_editing)
10648 {
10649   GtkRBTree *new_tree = NULL;
10650   GtkRBNode *new_node = NULL;
10651   GtkRBTree *cursor_tree = NULL;
10652   GtkRBNode *cursor_node = NULL;
10653   GtkTreePath *cursor_path = NULL;
10654   GtkTreeSelectMode mode = 0;
10655
10656   if (!gtk_widget_has_focus (GTK_WIDGET (tree_view)))
10657     return FALSE;
10658
10659   if (tree_view->priv->cursor_node == NULL)
10660     return FALSE;
10661
10662   cursor_path = _gtk_tree_path_new_from_rbtree (tree_view->priv->cursor_tree,
10663                                                 tree_view->priv->cursor_node);
10664
10665   _gtk_tree_view_find_node (tree_view, cursor_path,
10666                             &cursor_tree, &cursor_node);
10667
10668   if (cursor_tree == NULL)
10669     {
10670       gtk_tree_path_free (cursor_path);
10671       return FALSE;
10672     }
10673
10674   if (!tree_view->priv->extend_selection_pressed && start_editing &&
10675       tree_view->priv->focus_column)
10676     {
10677       if (gtk_tree_view_start_editing (tree_view, cursor_path, FALSE))
10678         {
10679           gtk_tree_path_free (cursor_path);
10680           return TRUE;
10681         }
10682     }
10683
10684   if (tree_view->priv->modify_selection_pressed)
10685     mode |= GTK_TREE_SELECT_MODE_TOGGLE;
10686   if (tree_view->priv->extend_selection_pressed)
10687     mode |= GTK_TREE_SELECT_MODE_EXTEND;
10688
10689   _gtk_tree_selection_internal_select_node (tree_view->priv->selection,
10690                                             cursor_node,
10691                                             cursor_tree,
10692                                             cursor_path,
10693                                             mode,
10694                                             FALSE);
10695
10696   /* We bail out if the original (tree, node) don't exist anymore after
10697    * handling the selection-changed callback.  We do return TRUE because
10698    * the key press has been handled at this point.
10699    */
10700   _gtk_tree_view_find_node (tree_view, cursor_path, &new_tree, &new_node);
10701
10702   if (cursor_tree != new_tree || cursor_node != new_node)
10703     return FALSE;
10704
10705   gtk_tree_view_clamp_node_visible (tree_view, cursor_tree, cursor_node);
10706
10707   gtk_widget_grab_focus (GTK_WIDGET (tree_view));
10708   _gtk_tree_view_queue_draw_node (tree_view, cursor_tree, cursor_node, NULL);
10709
10710   if (!tree_view->priv->extend_selection_pressed)
10711     gtk_tree_view_row_activated (tree_view, cursor_path,
10712                                  tree_view->priv->focus_column);
10713
10714   gtk_tree_path_free (cursor_path);
10715
10716   return TRUE;
10717 }
10718
10719 static gboolean
10720 gtk_tree_view_real_toggle_cursor_row (GtkTreeView *tree_view)
10721 {
10722   GtkRBTree *new_tree = NULL;
10723   GtkRBNode *new_node = NULL;
10724   GtkTreePath *cursor_path = NULL;
10725
10726   if (!gtk_widget_has_focus (GTK_WIDGET (tree_view)))
10727     return FALSE;
10728
10729   if (tree_view->priv->cursor_node == NULL)
10730     return FALSE;
10731
10732   cursor_path = _gtk_tree_path_new_from_rbtree (tree_view->priv->cursor_tree,
10733                                                 tree_view->priv->cursor_node);
10734
10735   _gtk_tree_selection_internal_select_node (tree_view->priv->selection,
10736                                             tree_view->priv->cursor_node,
10737                                             tree_view->priv->cursor_tree,
10738                                             cursor_path,
10739                                             GTK_TREE_SELECT_MODE_TOGGLE,
10740                                             FALSE);
10741
10742   /* We bail out if the original (tree, node) don't exist anymore after
10743    * handling the selection-changed callback.  We do return TRUE because
10744    * the key press has been handled at this point.
10745    */
10746   _gtk_tree_view_find_node (tree_view, cursor_path, &new_tree, &new_node);
10747
10748   if (tree_view->priv->cursor_node != new_node)
10749     return FALSE;
10750
10751   gtk_tree_view_clamp_node_visible (tree_view,
10752                                     tree_view->priv->cursor_tree,
10753                                     tree_view->priv->cursor_node);
10754
10755   gtk_widget_grab_focus (GTK_WIDGET (tree_view));
10756   gtk_tree_view_queue_draw_path (tree_view, cursor_path, NULL);
10757   gtk_tree_path_free (cursor_path);
10758
10759   return TRUE;
10760 }
10761
10762 static gboolean
10763 gtk_tree_view_real_expand_collapse_cursor_row (GtkTreeView *tree_view,
10764                                                gboolean     logical,
10765                                                gboolean     expand,
10766                                                gboolean     open_all)
10767 {
10768   GtkTreePath *cursor_path = NULL;
10769
10770   if (!gtk_widget_has_focus (GTK_WIDGET (tree_view)))
10771     return FALSE;
10772
10773   if (tree_view->priv->cursor_node == NULL)
10774     return FALSE;
10775
10776   cursor_path = _gtk_tree_path_new_from_rbtree (tree_view->priv->cursor_tree,
10777                                                 tree_view->priv->cursor_node);
10778
10779   /* Don't handle the event if we aren't an expander */
10780   if (!GTK_RBNODE_FLAG_SET (tree_view->priv->cursor_node, GTK_RBNODE_IS_PARENT))
10781     return FALSE;
10782
10783   if (!logical
10784       && gtk_widget_get_direction (GTK_WIDGET (tree_view)) == GTK_TEXT_DIR_RTL)
10785     expand = !expand;
10786
10787   if (expand)
10788     gtk_tree_view_real_expand_row (tree_view,
10789                                    cursor_path,
10790                                    tree_view->priv->cursor_tree,
10791                                    tree_view->priv->cursor_node,
10792                                    open_all,
10793                                    TRUE);
10794   else
10795     gtk_tree_view_real_collapse_row (tree_view,
10796                                      cursor_path,
10797                                      tree_view->priv->cursor_tree,
10798                                      tree_view->priv->cursor_node,
10799                                      TRUE);
10800
10801   gtk_tree_path_free (cursor_path);
10802
10803   return TRUE;
10804 }
10805
10806 static gboolean
10807 gtk_tree_view_real_select_cursor_parent (GtkTreeView *tree_view)
10808 {
10809   GtkTreePath *cursor_path = NULL;
10810   GdkModifierType state;
10811
10812   if (!gtk_widget_has_focus (GTK_WIDGET (tree_view)))
10813     goto out;
10814
10815   if (tree_view->priv->cursor_node == NULL)
10816     goto out;
10817
10818   cursor_path = _gtk_tree_path_new_from_rbtree (tree_view->priv->cursor_tree,
10819                                                 tree_view->priv->cursor_node);
10820
10821   if (tree_view->priv->cursor_tree->parent_node)
10822     {
10823       gtk_tree_view_queue_draw_path (tree_view, cursor_path, NULL);
10824
10825       gtk_tree_path_up (cursor_path);
10826
10827       if (gtk_get_current_event_state (&state))
10828         {
10829           GdkModifierType modify_mod_mask;
10830
10831           modify_mod_mask =
10832             gtk_widget_get_modifier_mask (GTK_WIDGET (tree_view),
10833                                           GDK_MODIFIER_INTENT_MODIFY_SELECTION);
10834
10835           if ((state & modify_mod_mask) == modify_mod_mask)
10836             tree_view->priv->modify_selection_pressed = TRUE;
10837         }
10838
10839       gtk_tree_view_real_set_cursor (tree_view, cursor_path, CLEAR_AND_SELECT | CLAMP_NODE);
10840       gtk_tree_path_free (cursor_path);
10841
10842       gtk_widget_grab_focus (GTK_WIDGET (tree_view));
10843
10844       tree_view->priv->modify_selection_pressed = FALSE;
10845
10846       return TRUE;
10847     }
10848
10849  out:
10850
10851   tree_view->priv->search_entry_avoid_unhandled_binding = TRUE;
10852   return FALSE;
10853 }
10854
10855 static gboolean
10856 gtk_tree_view_search_entry_flush_timeout (GtkTreeView *tree_view)
10857 {
10858   gtk_tree_view_search_dialog_hide (tree_view->priv->search_window, tree_view, NULL);
10859   tree_view->priv->typeselect_flush_timeout = 0;
10860
10861   return FALSE;
10862 }
10863
10864 /* Cut and paste from gtkwindow.c */
10865 static void
10866 send_focus_change (GtkWidget *widget,
10867                    GdkDevice *device,
10868                    gboolean   in)
10869 {
10870   GdkDeviceManager *device_manager;
10871   GList *devices, *d;
10872
10873   device_manager = gdk_display_get_device_manager (gtk_widget_get_display (widget));
10874   devices = gdk_device_manager_list_devices (device_manager, GDK_DEVICE_TYPE_MASTER);
10875   devices = g_list_concat (devices, gdk_device_manager_list_devices (device_manager, GDK_DEVICE_TYPE_SLAVE));
10876   devices = g_list_concat (devices, gdk_device_manager_list_devices (device_manager, GDK_DEVICE_TYPE_FLOATING));
10877
10878   for (d = devices; d; d = d->next)
10879     {
10880       GdkDevice *dev = d->data;
10881       GdkEvent *fevent;
10882       GdkWindow *window;
10883
10884       if (gdk_device_get_source (dev) != GDK_SOURCE_KEYBOARD)
10885         continue;
10886
10887       window = gtk_widget_get_window (widget);
10888
10889       /* Skip non-master keyboards that haven't
10890        * selected for events from this window
10891        */
10892       if (gdk_device_get_device_type (dev) != GDK_DEVICE_TYPE_MASTER &&
10893           !gdk_window_get_device_events (window, dev))
10894         continue;
10895
10896       fevent = gdk_event_new (GDK_FOCUS_CHANGE);
10897
10898       fevent->focus_change.type = GDK_FOCUS_CHANGE;
10899       fevent->focus_change.window = g_object_ref (window);
10900       fevent->focus_change.in = in;
10901       gdk_event_set_device (fevent, device);
10902
10903       gtk_widget_send_focus_change (widget, fevent);
10904
10905       gdk_event_free (fevent);
10906     }
10907
10908   g_list_free (devices);
10909 }
10910
10911 static void
10912 gtk_tree_view_ensure_interactive_directory (GtkTreeView *tree_view)
10913 {
10914   GtkWidget *frame, *vbox, *toplevel;
10915   GdkScreen *screen;
10916
10917   if (tree_view->priv->search_custom_entry_set)
10918     return;
10919
10920   toplevel = gtk_widget_get_toplevel (GTK_WIDGET (tree_view));
10921   screen = gtk_widget_get_screen (GTK_WIDGET (tree_view));
10922
10923    if (tree_view->priv->search_window != NULL)
10924      {
10925        if (gtk_window_has_group (GTK_WINDOW (toplevel)))
10926          gtk_window_group_add_window (gtk_window_get_group (GTK_WINDOW (toplevel)),
10927                                       GTK_WINDOW (tree_view->priv->search_window));
10928        else if (gtk_window_has_group (GTK_WINDOW (tree_view->priv->search_window)))
10929          gtk_window_group_remove_window (gtk_window_get_group (GTK_WINDOW (tree_view->priv->search_window)),
10930                                          GTK_WINDOW (tree_view->priv->search_window));
10931
10932        gtk_window_set_screen (GTK_WINDOW (tree_view->priv->search_window), screen);
10933
10934        return;
10935      }
10936
10937   tree_view->priv->search_window = gtk_window_new (GTK_WINDOW_POPUP);
10938   gtk_window_set_screen (GTK_WINDOW (tree_view->priv->search_window), screen);
10939
10940   if (gtk_window_has_group (GTK_WINDOW (toplevel)))
10941     gtk_window_group_add_window (gtk_window_get_group (GTK_WINDOW (toplevel)),
10942                                  GTK_WINDOW (tree_view->priv->search_window));
10943
10944   gtk_window_set_type_hint (GTK_WINDOW (tree_view->priv->search_window),
10945                             GDK_WINDOW_TYPE_HINT_UTILITY);
10946   gtk_window_set_modal (GTK_WINDOW (tree_view->priv->search_window), TRUE);
10947   g_signal_connect (tree_view->priv->search_window, "delete-event",
10948                     G_CALLBACK (gtk_tree_view_search_delete_event),
10949                     tree_view);
10950   g_signal_connect (tree_view->priv->search_window, "key-press-event",
10951                     G_CALLBACK (gtk_tree_view_search_key_press_event),
10952                     tree_view);
10953   g_signal_connect (tree_view->priv->search_window, "button-press-event",
10954                     G_CALLBACK (gtk_tree_view_search_button_press_event),
10955                     tree_view);
10956   g_signal_connect (tree_view->priv->search_window, "scroll-event",
10957                     G_CALLBACK (gtk_tree_view_search_scroll_event),
10958                     tree_view);
10959
10960   frame = gtk_frame_new (NULL);
10961   gtk_frame_set_shadow_type (GTK_FRAME (frame), GTK_SHADOW_ETCHED_IN);
10962   gtk_widget_show (frame);
10963   gtk_container_add (GTK_CONTAINER (tree_view->priv->search_window), frame);
10964
10965   vbox = gtk_box_new (GTK_ORIENTATION_VERTICAL, 0);
10966   gtk_widget_show (vbox);
10967   gtk_container_add (GTK_CONTAINER (frame), vbox);
10968   gtk_container_set_border_width (GTK_CONTAINER (vbox), 3);
10969
10970   /* add entry */
10971   tree_view->priv->search_entry = gtk_entry_new ();
10972   gtk_widget_show (tree_view->priv->search_entry);
10973   g_signal_connect (tree_view->priv->search_entry, "populate-popup",
10974                     G_CALLBACK (gtk_tree_view_search_disable_popdown),
10975                     tree_view);
10976   g_signal_connect (tree_view->priv->search_entry,
10977                     "activate", G_CALLBACK (gtk_tree_view_search_activate),
10978                     tree_view);
10979
10980   g_signal_connect (_gtk_entry_get_im_context (GTK_ENTRY (tree_view->priv->search_entry)),
10981                     "preedit-changed",
10982                     G_CALLBACK (gtk_tree_view_search_preedit_changed),
10983                     tree_view);
10984
10985   gtk_container_add (GTK_CONTAINER (vbox),
10986                      tree_view->priv->search_entry);
10987
10988   gtk_widget_realize (tree_view->priv->search_entry);
10989 }
10990
10991 /* Pops up the interactive search entry.  If keybinding is TRUE then the user
10992  * started this by typing the start_interactive_search keybinding.  Otherwise, it came from
10993  */
10994 static gboolean
10995 gtk_tree_view_real_start_interactive_search (GtkTreeView *tree_view,
10996                                              GdkDevice   *device,
10997                                              gboolean     keybinding)
10998 {
10999   /* We only start interactive search if we have focus or the columns
11000    * have focus.  If one of our children have focus, we don't want to
11001    * start the search.
11002    */
11003   GList *list;
11004   gboolean found_focus = FALSE;
11005   GtkWidgetClass *entry_parent_class;
11006
11007   if (!tree_view->priv->enable_search && !keybinding)
11008     return FALSE;
11009
11010   if (tree_view->priv->search_custom_entry_set)
11011     return FALSE;
11012
11013   if (tree_view->priv->search_window != NULL &&
11014       gtk_widget_get_visible (tree_view->priv->search_window))
11015     return TRUE;
11016
11017   for (list = tree_view->priv->columns; list; list = list->next)
11018     {
11019       GtkTreeViewColumn *column;
11020       GtkWidget         *button;
11021
11022       column = list->data;
11023       if (!gtk_tree_view_column_get_visible (column))
11024         continue;
11025
11026       button = gtk_tree_view_column_get_button (column);
11027       if (gtk_widget_has_focus (button))
11028         {
11029           found_focus = TRUE;
11030           break;
11031         }
11032     }
11033
11034   if (gtk_widget_has_focus (GTK_WIDGET (tree_view)))
11035     found_focus = TRUE;
11036
11037   if (!found_focus)
11038     return FALSE;
11039
11040   if (tree_view->priv->search_column < 0)
11041     return FALSE;
11042
11043   gtk_tree_view_ensure_interactive_directory (tree_view);
11044
11045   if (keybinding)
11046     gtk_entry_set_text (GTK_ENTRY (tree_view->priv->search_entry), "");
11047
11048   /* done, show it */
11049   tree_view->priv->search_position_func (tree_view, tree_view->priv->search_window, tree_view->priv->search_position_user_data);
11050   gtk_widget_show (tree_view->priv->search_window);
11051   if (tree_view->priv->search_entry_changed_id == 0)
11052     {
11053       tree_view->priv->search_entry_changed_id =
11054         g_signal_connect (tree_view->priv->search_entry, "changed",
11055                           G_CALLBACK (gtk_tree_view_search_init),
11056                           tree_view);
11057     }
11058
11059   tree_view->priv->typeselect_flush_timeout =
11060     gdk_threads_add_timeout (GTK_TREE_VIEW_SEARCH_DIALOG_TIMEOUT,
11061                    (GSourceFunc) gtk_tree_view_search_entry_flush_timeout,
11062                    tree_view);
11063
11064   /* Grab focus will select all the text.  We don't want that to happen, so we
11065    * call the parent instance and bypass the selection change.  This is probably
11066    * really non-kosher. */
11067   entry_parent_class = g_type_class_peek_parent (GTK_ENTRY_GET_CLASS (tree_view->priv->search_entry));
11068   (entry_parent_class->grab_focus) (tree_view->priv->search_entry);
11069
11070   /* send focus-in event */
11071   send_focus_change (tree_view->priv->search_entry, device, TRUE);
11072
11073   /* search first matching iter */
11074   gtk_tree_view_search_init (tree_view->priv->search_entry, tree_view);
11075
11076   return TRUE;
11077 }
11078
11079 static gboolean
11080 gtk_tree_view_start_interactive_search (GtkTreeView *tree_view)
11081 {
11082   return gtk_tree_view_real_start_interactive_search (tree_view,
11083                                                       gtk_get_current_event_device (),
11084                                                       TRUE);
11085 }
11086
11087 /* this function returns the new width of the column being resized given
11088  * the column and x position of the cursor; the x cursor position is passed
11089  * in as a pointer and automagicly corrected if it's beyond min/max limits
11090  */
11091 static gint
11092 gtk_tree_view_new_column_width (GtkTreeView *tree_view,
11093                                 gint       i,
11094                                 gint      *x)
11095 {
11096   GtkAllocation allocation;
11097   GtkTreeViewColumn *column;
11098   GtkRequisition button_req;
11099   gint max_width, min_width;
11100   gint width;
11101   gboolean rtl;
11102
11103   /* first translate the x position from widget->window
11104    * to clist->clist_window
11105    */
11106   rtl = (gtk_widget_get_direction (GTK_WIDGET (tree_view)) == GTK_TEXT_DIR_RTL);
11107   column = g_list_nth (tree_view->priv->columns, i)->data;
11108   gtk_widget_get_allocation (gtk_tree_view_column_get_button (column), &allocation);
11109   width = rtl ? (allocation.x + allocation.width - *x) : (*x - allocation.x);
11110
11111   /* Clamp down the value */
11112   min_width = gtk_tree_view_column_get_min_width (column);
11113   if (min_width == -1)
11114     {
11115       gtk_widget_get_preferred_size (gtk_tree_view_column_get_button (column), &button_req, NULL);
11116       width = MAX (button_req.width, width);
11117     }
11118   else
11119     width = MAX (min_width, width);
11120
11121   max_width = gtk_tree_view_column_get_max_width (column);
11122   if (max_width != -1)
11123     width = MIN (width, max_width);
11124
11125   *x = rtl ? (allocation.x + allocation.width - width) : (allocation.x + width);
11126
11127   return width;
11128 }
11129
11130
11131 /* FIXME this adjust_allocation is a big cut-and-paste from
11132  * GtkCList, needs to be some "official" way to do this
11133  * factored out.
11134  */
11135 typedef struct
11136 {
11137   GdkWindow *window;
11138   int dx;
11139   int dy;
11140 } ScrollData;
11141
11142 /* The window to which widget->window is relative */
11143 #define ALLOCATION_WINDOW(widget)               \
11144    (!gtk_widget_get_has_window (widget) ?                   \
11145     gtk_widget_get_window (widget) :                        \
11146     gdk_window_get_parent (gtk_widget_get_window (widget)))
11147
11148 static void
11149 adjust_allocation_recurse (GtkWidget *widget,
11150                            gpointer   data)
11151 {
11152   GtkAllocation allocation;
11153   ScrollData *scroll_data = data;
11154
11155   /* Need to really size allocate instead of just poking
11156    * into widget->allocation if the widget is not realized.
11157    * FIXME someone figure out why this was.
11158    */
11159   gtk_widget_get_allocation (widget, &allocation);
11160   if (!gtk_widget_get_realized (widget))
11161     {
11162       if (gtk_widget_get_visible (widget))
11163         {
11164           GdkRectangle tmp_rectangle = allocation;
11165           tmp_rectangle.x += scroll_data->dx;
11166           tmp_rectangle.y += scroll_data->dy;
11167
11168           gtk_widget_size_allocate (widget, &tmp_rectangle);
11169         }
11170     }
11171   else
11172     {
11173       if (ALLOCATION_WINDOW (widget) == scroll_data->window)
11174         {
11175           allocation.x += scroll_data->dx;
11176           allocation.y += scroll_data->dy;
11177           gtk_widget_set_allocation (widget, &allocation);
11178
11179           if (GTK_IS_CONTAINER (widget))
11180             gtk_container_forall (GTK_CONTAINER (widget),
11181                                   adjust_allocation_recurse,
11182                                   data);
11183         }
11184     }
11185 }
11186
11187 static void
11188 adjust_allocation (GtkWidget *widget,
11189                    int        dx,
11190                    int        dy)
11191 {
11192   ScrollData scroll_data;
11193
11194   if (gtk_widget_get_realized (widget))
11195     scroll_data.window = ALLOCATION_WINDOW (widget);
11196   else
11197     scroll_data.window = NULL;
11198
11199   scroll_data.dx = dx;
11200   scroll_data.dy = dy;
11201
11202   adjust_allocation_recurse (widget, &scroll_data);
11203 }
11204
11205 /* Callbacks */
11206 static void
11207 gtk_tree_view_adjustment_changed (GtkAdjustment *adjustment,
11208                                   GtkTreeView   *tree_view)
11209 {
11210   if (gtk_widget_get_realized (GTK_WIDGET (tree_view)))
11211     {
11212       GtkStyleContext *context;
11213       gint dy;
11214
11215       gdk_window_move (tree_view->priv->bin_window,
11216                        - gtk_adjustment_get_value (tree_view->priv->hadjustment),
11217                        gtk_tree_view_get_effective_header_height (tree_view));
11218       gdk_window_move (tree_view->priv->header_window,
11219                        - gtk_adjustment_get_value (tree_view->priv->hadjustment),
11220                        0);
11221       dy = tree_view->priv->dy - (int) gtk_adjustment_get_value (tree_view->priv->vadjustment);
11222       if (dy)
11223         {
11224           update_prelight (tree_view,
11225                            tree_view->priv->event_last_x,
11226                            tree_view->priv->event_last_y - dy);
11227
11228           if (tree_view->priv->edited_column)
11229             {
11230               GList *list;
11231               GtkTreeViewChild *child = NULL;
11232               GtkCellEditable *edit_widget;
11233               GtkCellArea *area;
11234
11235               area        = gtk_cell_layout_get_area (GTK_CELL_LAYOUT (tree_view->priv->edited_column));
11236               edit_widget = gtk_cell_area_get_edit_widget (area);
11237               if (GTK_IS_WIDGET (edit_widget))
11238                 {
11239                   adjust_allocation (GTK_WIDGET (edit_widget), 0, dy);
11240
11241                   for (list = tree_view->priv->children; list; list = list->next)
11242                     {
11243                       child = (GtkTreeViewChild *)list->data;
11244                       if (child->widget == GTK_WIDGET (edit_widget))
11245                         {
11246                           child->y += dy;
11247                           break;
11248                         }
11249                     }
11250                 }
11251             }
11252         }
11253       gdk_window_scroll (tree_view->priv->bin_window, 0, dy);
11254
11255       context = gtk_widget_get_style_context (GTK_WIDGET (tree_view));
11256       gtk_style_context_scroll_animations (context, tree_view->priv->bin_window, 0, dy);
11257
11258       if (tree_view->priv->dy != (int) gtk_adjustment_get_value (tree_view->priv->vadjustment))
11259         {
11260           /* update our dy and top_row */
11261           tree_view->priv->dy = (int) gtk_adjustment_get_value (tree_view->priv->vadjustment);
11262
11263           if (!tree_view->priv->in_top_row_to_dy)
11264             gtk_tree_view_dy_to_top_row (tree_view);
11265         }
11266
11267       gdk_window_process_updates (tree_view->priv->header_window, TRUE);
11268       gtk_tree_view_bin_process_updates (tree_view);
11269     }
11270 }
11271
11272 \f
11273
11274 /* Public methods
11275  */
11276
11277 /**
11278  * gtk_tree_view_new:
11279  *
11280  * Creates a new #GtkTreeView widget.
11281  *
11282  * Return value: A newly created #GtkTreeView widget.
11283  **/
11284 GtkWidget *
11285 gtk_tree_view_new (void)
11286 {
11287   return g_object_new (GTK_TYPE_TREE_VIEW, NULL);
11288 }
11289
11290 /**
11291  * gtk_tree_view_new_with_model:
11292  * @model: the model.
11293  *
11294  * Creates a new #GtkTreeView widget with the model initialized to @model.
11295  *
11296  * Return value: A newly created #GtkTreeView widget.
11297  **/
11298 GtkWidget *
11299 gtk_tree_view_new_with_model (GtkTreeModel *model)
11300 {
11301   return g_object_new (GTK_TYPE_TREE_VIEW, "model", model, NULL);
11302 }
11303
11304 /* Public Accessors
11305  */
11306
11307 /**
11308  * gtk_tree_view_get_model:
11309  * @tree_view: a #GtkTreeView
11310  *
11311  * Returns the model the #GtkTreeView is based on.  Returns %NULL if the
11312  * model is unset.
11313  *
11314  * Return value: (transfer none): A #GtkTreeModel, or %NULL if none is currently being used.
11315  **/
11316 GtkTreeModel *
11317 gtk_tree_view_get_model (GtkTreeView *tree_view)
11318 {
11319   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), NULL);
11320
11321   return tree_view->priv->model;
11322 }
11323
11324 /**
11325  * gtk_tree_view_set_model:
11326  * @tree_view: A #GtkTreeNode.
11327  * @model: (allow-none): The model.
11328  *
11329  * Sets the model for a #GtkTreeView.  If the @tree_view already has a model
11330  * set, it will remove it before setting the new model.  If @model is %NULL,
11331  * then it will unset the old model.
11332  **/
11333 void
11334 gtk_tree_view_set_model (GtkTreeView  *tree_view,
11335                          GtkTreeModel *model)
11336 {
11337   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
11338   g_return_if_fail (model == NULL || GTK_IS_TREE_MODEL (model));
11339
11340   if (model == tree_view->priv->model)
11341     return;
11342
11343   if (tree_view->priv->scroll_to_path)
11344     {
11345       gtk_tree_row_reference_free (tree_view->priv->scroll_to_path);
11346       tree_view->priv->scroll_to_path = NULL;
11347     }
11348
11349   if (tree_view->priv->rubber_band_status)
11350     gtk_tree_view_stop_rubber_band (tree_view);
11351
11352   if (tree_view->priv->model)
11353     {
11354       GList *tmplist = tree_view->priv->columns;
11355       GtkStyleContext *context;
11356
11357       gtk_tree_view_unref_and_check_selection_tree (tree_view, tree_view->priv->tree);
11358       gtk_tree_view_stop_editing (tree_view, TRUE);
11359
11360       context = gtk_widget_get_style_context (GTK_WIDGET (tree_view));
11361       gtk_style_context_cancel_animations (context, NULL);
11362
11363       g_signal_handlers_disconnect_by_func (tree_view->priv->model,
11364                                             gtk_tree_view_row_changed,
11365                                             tree_view);
11366       g_signal_handlers_disconnect_by_func (tree_view->priv->model,
11367                                             gtk_tree_view_row_inserted,
11368                                             tree_view);
11369       g_signal_handlers_disconnect_by_func (tree_view->priv->model,
11370                                             gtk_tree_view_row_has_child_toggled,
11371                                             tree_view);
11372       g_signal_handlers_disconnect_by_func (tree_view->priv->model,
11373                                             gtk_tree_view_row_deleted,
11374                                             tree_view);
11375       g_signal_handlers_disconnect_by_func (tree_view->priv->model,
11376                                             gtk_tree_view_rows_reordered,
11377                                             tree_view);
11378
11379       for (; tmplist; tmplist = tmplist->next)
11380         _gtk_tree_view_column_unset_model (tmplist->data,
11381                                            tree_view->priv->model);
11382
11383       if (tree_view->priv->tree)
11384         gtk_tree_view_free_rbtree (tree_view);
11385
11386       gtk_tree_row_reference_free (tree_view->priv->drag_dest_row);
11387       tree_view->priv->drag_dest_row = NULL;
11388       gtk_tree_row_reference_free (tree_view->priv->anchor);
11389       tree_view->priv->anchor = NULL;
11390       gtk_tree_row_reference_free (tree_view->priv->top_row);
11391       tree_view->priv->top_row = NULL;
11392       gtk_tree_row_reference_free (tree_view->priv->scroll_to_path);
11393       tree_view->priv->scroll_to_path = NULL;
11394
11395       tree_view->priv->scroll_to_column = NULL;
11396
11397       g_object_unref (tree_view->priv->model);
11398
11399       tree_view->priv->search_column = -1;
11400       tree_view->priv->fixed_height_check = 0;
11401       tree_view->priv->fixed_height = -1;
11402       tree_view->priv->dy = tree_view->priv->top_row_dy = 0;
11403       tree_view->priv->last_button_x = -1;
11404       tree_view->priv->last_button_y = -1;
11405     }
11406
11407   tree_view->priv->model = model;
11408
11409   if (tree_view->priv->model)
11410     {
11411       gint i;
11412       GtkTreePath *path;
11413       GtkTreeIter iter;
11414       GtkTreeModelFlags flags;
11415
11416       if (tree_view->priv->search_column == -1)
11417         {
11418           for (i = 0; i < gtk_tree_model_get_n_columns (model); i++)
11419             {
11420               GType type = gtk_tree_model_get_column_type (model, i);
11421
11422               if (g_value_type_transformable (type, G_TYPE_STRING))
11423                 {
11424                   tree_view->priv->search_column = i;
11425                   break;
11426                 }
11427             }
11428         }
11429
11430       g_object_ref (tree_view->priv->model);
11431       g_signal_connect (tree_view->priv->model,
11432                         "row-changed",
11433                         G_CALLBACK (gtk_tree_view_row_changed),
11434                         tree_view);
11435       g_signal_connect (tree_view->priv->model,
11436                         "row-inserted",
11437                         G_CALLBACK (gtk_tree_view_row_inserted),
11438                         tree_view);
11439       g_signal_connect (tree_view->priv->model,
11440                         "row-has-child-toggled",
11441                         G_CALLBACK (gtk_tree_view_row_has_child_toggled),
11442                         tree_view);
11443       g_signal_connect (tree_view->priv->model,
11444                         "row-deleted",
11445                         G_CALLBACK (gtk_tree_view_row_deleted),
11446                         tree_view);
11447       g_signal_connect (tree_view->priv->model,
11448                         "rows-reordered",
11449                         G_CALLBACK (gtk_tree_view_rows_reordered),
11450                         tree_view);
11451
11452       flags = gtk_tree_model_get_flags (tree_view->priv->model);
11453       if ((flags & GTK_TREE_MODEL_LIST_ONLY) == GTK_TREE_MODEL_LIST_ONLY)
11454         tree_view->priv->is_list = TRUE;
11455       else
11456         tree_view->priv->is_list = FALSE;
11457
11458       path = gtk_tree_path_new_first ();
11459       if (gtk_tree_model_get_iter (tree_view->priv->model, &iter, path))
11460         {
11461           tree_view->priv->tree = _gtk_rbtree_new ();
11462           gtk_tree_view_build_tree (tree_view, tree_view->priv->tree, &iter, 1, FALSE);
11463           _gtk_tree_view_accessible_add (tree_view, tree_view->priv->tree, NULL);
11464         }
11465       gtk_tree_path_free (path);
11466
11467       /*  FIXME: do I need to do this? gtk_tree_view_create_buttons (tree_view); */
11468       install_presize_handler (tree_view);
11469     }
11470
11471   gtk_tree_view_real_set_cursor (tree_view, NULL, CURSOR_INVALID);
11472
11473   g_object_notify (G_OBJECT (tree_view), "model");
11474
11475   if (tree_view->priv->selection)
11476   _gtk_tree_selection_emit_changed (tree_view->priv->selection);
11477
11478   if (gtk_widget_get_realized (GTK_WIDGET (tree_view)))
11479     gtk_widget_queue_resize (GTK_WIDGET (tree_view));
11480 }
11481
11482 /**
11483  * gtk_tree_view_get_selection:
11484  * @tree_view: A #GtkTreeView.
11485  *
11486  * Gets the #GtkTreeSelection associated with @tree_view.
11487  *
11488  * Return value: (transfer none): A #GtkTreeSelection object.
11489  **/
11490 GtkTreeSelection *
11491 gtk_tree_view_get_selection (GtkTreeView *tree_view)
11492 {
11493   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), NULL);
11494
11495   return tree_view->priv->selection;
11496 }
11497
11498 /**
11499  * gtk_tree_view_get_hadjustment:
11500  * @tree_view: A #GtkTreeView
11501  *
11502  * Gets the #GtkAdjustment currently being used for the horizontal aspect.
11503  *
11504  * Return value: (transfer none): A #GtkAdjustment object, or %NULL
11505  *     if none is currently being used.
11506  *
11507  * Deprecated: 3.0: Use gtk_scrollable_get_hadjustment()
11508  **/
11509 GtkAdjustment *
11510 gtk_tree_view_get_hadjustment (GtkTreeView *tree_view)
11511 {
11512   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), NULL);
11513
11514   return gtk_tree_view_do_get_hadjustment (tree_view);
11515 }
11516
11517 static GtkAdjustment *
11518 gtk_tree_view_do_get_hadjustment (GtkTreeView *tree_view)
11519 {
11520   return tree_view->priv->hadjustment;
11521 }
11522
11523 /**
11524  * gtk_tree_view_set_hadjustment:
11525  * @tree_view: A #GtkTreeView
11526  * @adjustment: (allow-none): The #GtkAdjustment to set, or %NULL
11527  *
11528  * Sets the #GtkAdjustment for the current horizontal aspect.
11529  *
11530  * Deprecated: 3.0: Use gtk_scrollable_set_hadjustment()
11531  **/
11532 void
11533 gtk_tree_view_set_hadjustment (GtkTreeView   *tree_view,
11534                                GtkAdjustment *adjustment)
11535 {
11536   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
11537   g_return_if_fail (adjustment == NULL || GTK_IS_ADJUSTMENT (adjustment));
11538
11539   gtk_tree_view_do_set_hadjustment (tree_view, adjustment);
11540 }
11541
11542 static void
11543 gtk_tree_view_do_set_hadjustment (GtkTreeView   *tree_view,
11544                                   GtkAdjustment *adjustment)
11545 {
11546   GtkTreeViewPrivate *priv = tree_view->priv;
11547
11548   if (adjustment && priv->hadjustment == adjustment)
11549     return;
11550
11551   if (priv->hadjustment != NULL)
11552     {
11553       g_signal_handlers_disconnect_by_func (priv->hadjustment,
11554                                             gtk_tree_view_adjustment_changed,
11555                                             tree_view);
11556       g_object_unref (priv->hadjustment);
11557     }
11558
11559   if (adjustment == NULL)
11560     adjustment = gtk_adjustment_new (0.0, 0.0, 0.0,
11561                                      0.0, 0.0, 0.0);
11562
11563   g_signal_connect (adjustment, "value-changed",
11564                     G_CALLBACK (gtk_tree_view_adjustment_changed), tree_view);
11565   priv->hadjustment = g_object_ref_sink (adjustment);
11566   /* FIXME: Adjustment should probably be populated here with fresh values, but
11567    * internal details are too complicated for me to decipher right now.
11568    */
11569   gtk_tree_view_adjustment_changed (NULL, tree_view);
11570
11571   g_object_notify (G_OBJECT (tree_view), "hadjustment");
11572 }
11573
11574 /**
11575  * gtk_tree_view_get_vadjustment:
11576  * @tree_view: A #GtkTreeView
11577  *
11578  * Gets the #GtkAdjustment currently being used for the vertical aspect.
11579  *
11580  * Return value: (transfer none): A #GtkAdjustment object, or %NULL
11581  *     if none is currently being used.
11582  *
11583  * Deprecated: 3.0: Use gtk_scrollable_get_vadjustment()
11584  **/
11585 GtkAdjustment *
11586 gtk_tree_view_get_vadjustment (GtkTreeView *tree_view)
11587 {
11588   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), NULL);
11589
11590   return gtk_tree_view_do_get_vadjustment (tree_view);
11591 }
11592
11593 static GtkAdjustment *
11594 gtk_tree_view_do_get_vadjustment (GtkTreeView *tree_view)
11595 {
11596   return tree_view->priv->vadjustment;
11597 }
11598
11599 /**
11600  * gtk_tree_view_set_vadjustment:
11601  * @tree_view: A #GtkTreeView
11602  * @adjustment: (allow-none): The #GtkAdjustment to set, or %NULL
11603  *
11604  * Sets the #GtkAdjustment for the current vertical aspect.
11605  *
11606  * Deprecated: 3.0: Use gtk_scrollable_set_vadjustment()
11607  **/
11608 void
11609 gtk_tree_view_set_vadjustment (GtkTreeView   *tree_view,
11610                                GtkAdjustment *adjustment)
11611 {
11612   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
11613   g_return_if_fail (adjustment == NULL || GTK_IS_ADJUSTMENT (adjustment));
11614
11615   gtk_tree_view_do_set_vadjustment (tree_view, adjustment);
11616 }
11617
11618 static void
11619 gtk_tree_view_do_set_vadjustment (GtkTreeView   *tree_view,
11620                                   GtkAdjustment *adjustment)
11621 {
11622   GtkTreeViewPrivate *priv = tree_view->priv;
11623
11624   if (adjustment && priv->vadjustment == adjustment)
11625     return;
11626
11627   if (priv->vadjustment != NULL)
11628     {
11629       g_signal_handlers_disconnect_by_func (priv->vadjustment,
11630                                             gtk_tree_view_adjustment_changed,
11631                                             tree_view);
11632       g_object_unref (priv->vadjustment);
11633     }
11634
11635   if (adjustment == NULL)
11636     adjustment = gtk_adjustment_new (0.0, 0.0, 0.0,
11637                                      0.0, 0.0, 0.0);
11638
11639   g_signal_connect (adjustment, "value-changed",
11640                     G_CALLBACK (gtk_tree_view_adjustment_changed), tree_view);
11641   priv->vadjustment = g_object_ref_sink (adjustment);
11642   /* FIXME: Adjustment should probably be populated here with fresh values, but
11643    * internal details are too complicated for me to decipher right now.
11644    */
11645   gtk_tree_view_adjustment_changed (NULL, tree_view);
11646   g_object_notify (G_OBJECT (tree_view), "vadjustment");
11647 }
11648
11649 /* Column and header operations */
11650
11651 /**
11652  * gtk_tree_view_get_headers_visible:
11653  * @tree_view: A #GtkTreeView.
11654  *
11655  * Returns %TRUE if the headers on the @tree_view are visible.
11656  *
11657  * Return value: Whether the headers are visible or not.
11658  **/
11659 gboolean
11660 gtk_tree_view_get_headers_visible (GtkTreeView *tree_view)
11661 {
11662   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), FALSE);
11663
11664   return tree_view->priv->headers_visible;
11665 }
11666
11667 /**
11668  * gtk_tree_view_set_headers_visible:
11669  * @tree_view: A #GtkTreeView.
11670  * @headers_visible: %TRUE if the headers are visible
11671  *
11672  * Sets the visibility state of the headers.
11673  **/
11674 void
11675 gtk_tree_view_set_headers_visible (GtkTreeView *tree_view,
11676                                    gboolean     headers_visible)
11677 {
11678   gint x, y;
11679   GList *list;
11680   GtkTreeViewColumn *column;
11681   GtkAllocation allocation;
11682   GtkWidget *button;
11683
11684   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
11685
11686   headers_visible = !! headers_visible;
11687
11688   if (tree_view->priv->headers_visible == headers_visible)
11689     return;
11690
11691   tree_view->priv->headers_visible = headers_visible == TRUE;
11692
11693   if (gtk_widget_get_realized (GTK_WIDGET (tree_view)))
11694     {
11695       gdk_window_get_position (tree_view->priv->bin_window, &x, &y);
11696       if (headers_visible)
11697         {
11698           gtk_widget_get_allocation (GTK_WIDGET (tree_view), &allocation);
11699           gdk_window_move_resize (tree_view->priv->bin_window,
11700                                   x, y  + gtk_tree_view_get_effective_header_height (tree_view),
11701                                   tree_view->priv->width, allocation.height -  + gtk_tree_view_get_effective_header_height (tree_view));
11702
11703           if (gtk_widget_get_mapped (GTK_WIDGET (tree_view)))
11704             gtk_tree_view_map_buttons (tree_view);
11705         }
11706       else
11707         {
11708           gdk_window_move_resize (tree_view->priv->bin_window, x, y, tree_view->priv->width, tree_view->priv->height);
11709
11710           for (list = tree_view->priv->columns; list; list = list->next)
11711             {
11712               column = list->data;
11713               button = gtk_tree_view_column_get_button (column);
11714
11715               gtk_widget_hide (button);
11716               gtk_widget_unmap (button);
11717             }
11718           gdk_window_hide (tree_view->priv->header_window);
11719         }
11720     }
11721
11722   gtk_widget_get_allocation (GTK_WIDGET (tree_view), &allocation);
11723   gtk_adjustment_configure (tree_view->priv->vadjustment,
11724                             gtk_adjustment_get_value (tree_view->priv->vadjustment),
11725                             0,
11726                             tree_view->priv->height,
11727                             gtk_adjustment_get_step_increment (tree_view->priv->vadjustment),
11728                             (allocation.height - gtk_tree_view_get_effective_header_height (tree_view)) / 2,
11729                             allocation.height - gtk_tree_view_get_effective_header_height (tree_view));
11730
11731   gtk_widget_queue_resize (GTK_WIDGET (tree_view));
11732
11733   g_object_notify (G_OBJECT (tree_view), "headers-visible");
11734 }
11735
11736 /**
11737  * gtk_tree_view_columns_autosize:
11738  * @tree_view: A #GtkTreeView.
11739  *
11740  * Resizes all columns to their optimal width. Only works after the
11741  * treeview has been realized.
11742  **/
11743 void
11744 gtk_tree_view_columns_autosize (GtkTreeView *tree_view)
11745 {
11746   gboolean dirty = FALSE;
11747   GList *list;
11748   GtkTreeViewColumn *column;
11749
11750   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
11751
11752   for (list = tree_view->priv->columns; list; list = list->next)
11753     {
11754       column = list->data;
11755       if (gtk_tree_view_column_get_sizing (column) == GTK_TREE_VIEW_COLUMN_AUTOSIZE)
11756         continue;
11757       _gtk_tree_view_column_cell_set_dirty (column, TRUE);
11758       dirty = TRUE;
11759     }
11760
11761   if (dirty)
11762     gtk_widget_queue_resize (GTK_WIDGET (tree_view));
11763 }
11764
11765 /**
11766  * gtk_tree_view_set_headers_clickable:
11767  * @tree_view: A #GtkTreeView.
11768  * @setting: %TRUE if the columns are clickable.
11769  *
11770  * Allow the column title buttons to be clicked.
11771  **/
11772 void
11773 gtk_tree_view_set_headers_clickable (GtkTreeView *tree_view,
11774                                      gboolean   setting)
11775 {
11776   GList *list;
11777
11778   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
11779
11780   for (list = tree_view->priv->columns; list; list = list->next)
11781     gtk_tree_view_column_set_clickable (GTK_TREE_VIEW_COLUMN (list->data), setting);
11782
11783   g_object_notify (G_OBJECT (tree_view), "headers-clickable");
11784 }
11785
11786
11787 /**
11788  * gtk_tree_view_get_headers_clickable:
11789  * @tree_view: A #GtkTreeView.
11790  *
11791  * Returns whether all header columns are clickable.
11792  *
11793  * Return value: %TRUE if all header columns are clickable, otherwise %FALSE
11794  *
11795  * Since: 2.10
11796  **/
11797 gboolean
11798 gtk_tree_view_get_headers_clickable (GtkTreeView *tree_view)
11799 {
11800   GList *list;
11801
11802   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), FALSE);
11803
11804   for (list = tree_view->priv->columns; list; list = list->next)
11805     if (!gtk_tree_view_column_get_clickable (GTK_TREE_VIEW_COLUMN (list->data)))
11806       return FALSE;
11807
11808   return TRUE;
11809 }
11810
11811 /**
11812  * gtk_tree_view_set_rules_hint
11813  * @tree_view: a #GtkTreeView
11814  * @setting: %TRUE if the tree requires reading across rows
11815  *
11816  * This function tells GTK+ that the user interface for your
11817  * application requires users to read across tree rows and associate
11818  * cells with one another. By default, GTK+ will then render the tree
11819  * with alternating row colors. Do <emphasis>not</emphasis> use it
11820  * just because you prefer the appearance of the ruled tree; that's a
11821  * question for the theme. Some themes will draw tree rows in
11822  * alternating colors even when rules are turned off, and users who
11823  * prefer that appearance all the time can choose those themes. You
11824  * should call this function only as a <emphasis>semantic</emphasis>
11825  * hint to the theme engine that your tree makes alternating colors
11826  * useful from a functional standpoint (since it has lots of columns,
11827  * generally).
11828  *
11829  **/
11830 void
11831 gtk_tree_view_set_rules_hint (GtkTreeView  *tree_view,
11832                               gboolean      setting)
11833 {
11834   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
11835
11836   setting = setting != FALSE;
11837
11838   if (tree_view->priv->has_rules != setting)
11839     {
11840       tree_view->priv->has_rules = setting;
11841       gtk_widget_queue_draw (GTK_WIDGET (tree_view));
11842     }
11843
11844   g_object_notify (G_OBJECT (tree_view), "rules-hint");
11845 }
11846
11847 /**
11848  * gtk_tree_view_get_rules_hint
11849  * @tree_view: a #GtkTreeView
11850  *
11851  * Gets the setting set by gtk_tree_view_set_rules_hint().
11852  *
11853  * Return value: %TRUE if rules are useful for the user of this tree
11854  **/
11855 gboolean
11856 gtk_tree_view_get_rules_hint (GtkTreeView  *tree_view)
11857 {
11858   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), FALSE);
11859
11860   return tree_view->priv->has_rules;
11861 }
11862
11863 /* Public Column functions
11864  */
11865
11866 /**
11867  * gtk_tree_view_append_column:
11868  * @tree_view: A #GtkTreeView.
11869  * @column: The #GtkTreeViewColumn to add.
11870  *
11871  * Appends @column to the list of columns. If @tree_view has "fixed_height"
11872  * mode enabled, then @column must have its "sizing" property set to be
11873  * GTK_TREE_VIEW_COLUMN_FIXED.
11874  *
11875  * Return value: The number of columns in @tree_view after appending.
11876  **/
11877 gint
11878 gtk_tree_view_append_column (GtkTreeView       *tree_view,
11879                              GtkTreeViewColumn *column)
11880 {
11881   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), -1);
11882   g_return_val_if_fail (GTK_IS_TREE_VIEW_COLUMN (column), -1);
11883   g_return_val_if_fail (gtk_tree_view_column_get_tree_view (column) == NULL, -1);
11884
11885   return gtk_tree_view_insert_column (tree_view, column, -1);
11886 }
11887
11888 void
11889 _gtk_tree_view_reset_header_styles (GtkTreeView *tree_view)
11890 {
11891   GList *columns;
11892
11893   for (columns = tree_view->priv->columns; columns; columns = columns->next)
11894     {
11895       GtkTreeViewColumn *column = columns->data;
11896       GtkWidget *header_widget;
11897
11898       if (gtk_tree_view_column_get_visible (column))
11899         continue;
11900
11901       header_widget = gtk_tree_view_column_get_widget (column);
11902
11903       if (!header_widget)
11904         header_widget = gtk_tree_view_column_get_button (column);
11905
11906       gtk_widget_reset_style (header_widget);
11907     }
11908 }
11909
11910
11911 /**
11912  * gtk_tree_view_remove_column:
11913  * @tree_view: A #GtkTreeView.
11914  * @column: The #GtkTreeViewColumn to remove.
11915  *
11916  * Removes @column from @tree_view.
11917  *
11918  * Return value: The number of columns in @tree_view after removing.
11919  **/
11920 gint
11921 gtk_tree_view_remove_column (GtkTreeView       *tree_view,
11922                              GtkTreeViewColumn *column)
11923 {
11924   guint position;
11925
11926   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), -1);
11927   g_return_val_if_fail (GTK_IS_TREE_VIEW_COLUMN (column), -1);
11928   g_return_val_if_fail (gtk_tree_view_column_get_tree_view (column) == GTK_WIDGET (tree_view), -1);
11929
11930   if (tree_view->priv->focus_column == column)
11931     _gtk_tree_view_set_focus_column (tree_view, NULL);
11932
11933   if (tree_view->priv->edited_column == column)
11934     {
11935       gtk_tree_view_stop_editing (tree_view, TRUE);
11936
11937       /* no need to, but just to be sure ... */
11938       tree_view->priv->edited_column = NULL;
11939     }
11940
11941   if (tree_view->priv->expander_column == column)
11942     tree_view->priv->expander_column = NULL;
11943
11944   g_signal_handlers_disconnect_by_func (column,
11945                                         G_CALLBACK (column_sizing_notify),
11946                                         tree_view);
11947
11948   _gtk_tree_view_column_unset_tree_view (column);
11949
11950   position = g_list_index (tree_view->priv->columns, column);
11951
11952   tree_view->priv->columns = g_list_remove (tree_view->priv->columns, column);
11953   tree_view->priv->n_columns--;
11954
11955   if (gtk_widget_get_realized (GTK_WIDGET (tree_view)))
11956     {
11957       GList *list;
11958
11959       _gtk_tree_view_column_unrealize_button (column);
11960       for (list = tree_view->priv->columns; list; list = list->next)
11961         {
11962           GtkTreeViewColumn *tmp_column;
11963
11964           tmp_column = GTK_TREE_VIEW_COLUMN (list->data);
11965           if (gtk_tree_view_column_get_visible (tmp_column))
11966             _gtk_tree_view_column_cell_set_dirty (tmp_column, TRUE);
11967         }
11968
11969       if (tree_view->priv->n_columns == 0 &&
11970           gtk_tree_view_get_headers_visible (tree_view))
11971         gdk_window_hide (tree_view->priv->header_window);
11972
11973       gtk_widget_queue_resize (GTK_WIDGET (tree_view));
11974     }
11975
11976   _gtk_tree_view_reset_header_styles (tree_view);
11977
11978   _gtk_tree_view_accessible_remove_column (tree_view, column, position);
11979
11980   g_object_unref (column);
11981   g_signal_emit (tree_view, tree_view_signals[COLUMNS_CHANGED], 0);
11982
11983   return tree_view->priv->n_columns;
11984 }
11985
11986 /**
11987  * gtk_tree_view_insert_column:
11988  * @tree_view: A #GtkTreeView.
11989  * @column: The #GtkTreeViewColumn to be inserted.
11990  * @position: The position to insert @column in.
11991  *
11992  * This inserts the @column into the @tree_view at @position.  If @position is
11993  * -1, then the column is inserted at the end. If @tree_view has
11994  * "fixed_height" mode enabled, then @column must have its "sizing" property
11995  * set to be GTK_TREE_VIEW_COLUMN_FIXED.
11996  *
11997  * Return value: The number of columns in @tree_view after insertion.
11998  **/
11999 gint
12000 gtk_tree_view_insert_column (GtkTreeView       *tree_view,
12001                              GtkTreeViewColumn *column,
12002                              gint               position)
12003 {
12004   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), -1);
12005   g_return_val_if_fail (GTK_IS_TREE_VIEW_COLUMN (column), -1);
12006   g_return_val_if_fail (gtk_tree_view_column_get_tree_view (column) == NULL, -1);
12007
12008   if (tree_view->priv->fixed_height_mode)
12009     g_return_val_if_fail (gtk_tree_view_column_get_sizing (column)
12010                           == GTK_TREE_VIEW_COLUMN_FIXED, -1);
12011
12012   if (position < 0 || position > tree_view->priv->n_columns)
12013     position = tree_view->priv->n_columns;
12014
12015   g_object_ref_sink (column);
12016
12017   if (tree_view->priv->n_columns == 0 &&
12018       gtk_widget_get_realized (GTK_WIDGET (tree_view)) &&
12019       gtk_tree_view_get_headers_visible (tree_view))
12020     {
12021       gdk_window_show (tree_view->priv->header_window);
12022     }
12023
12024   g_signal_connect (column, "notify::sizing",
12025                     G_CALLBACK (column_sizing_notify), tree_view);
12026
12027   tree_view->priv->columns = g_list_insert (tree_view->priv->columns,
12028                                             column, position);
12029   tree_view->priv->n_columns++;
12030
12031   _gtk_tree_view_column_set_tree_view (column, tree_view);
12032
12033   if (gtk_widget_get_realized (GTK_WIDGET (tree_view)))
12034     {
12035       GList *list;
12036
12037       _gtk_tree_view_column_realize_button (column);
12038
12039       for (list = tree_view->priv->columns; list; list = list->next)
12040         {
12041           column = GTK_TREE_VIEW_COLUMN (list->data);
12042           if (gtk_tree_view_column_get_visible (column))
12043             _gtk_tree_view_column_cell_set_dirty (column, TRUE);
12044         }
12045       gtk_widget_queue_resize (GTK_WIDGET (tree_view));
12046     }
12047
12048   _gtk_tree_view_reset_header_styles (tree_view);
12049
12050   _gtk_tree_view_accessible_add_column (tree_view, column, position);
12051
12052   g_signal_emit (tree_view, tree_view_signals[COLUMNS_CHANGED], 0);
12053
12054   return tree_view->priv->n_columns;
12055 }
12056
12057 /**
12058  * gtk_tree_view_insert_column_with_attributes:
12059  * @tree_view: A #GtkTreeView
12060  * @position: The position to insert the new column in
12061  * @title: The title to set the header to
12062  * @cell: The #GtkCellRenderer
12063  * @...: A %NULL-terminated list of attributes
12064  *
12065  * Creates a new #GtkTreeViewColumn and inserts it into the @tree_view at
12066  * @position.  If @position is -1, then the newly created column is inserted at
12067  * the end.  The column is initialized with the attributes given. If @tree_view
12068  * has "fixed_height" mode enabled, then the new column will have its sizing
12069  * property set to be GTK_TREE_VIEW_COLUMN_FIXED.
12070  *
12071  * Return value: The number of columns in @tree_view after insertion.
12072  **/
12073 gint
12074 gtk_tree_view_insert_column_with_attributes (GtkTreeView     *tree_view,
12075                                              gint             position,
12076                                              const gchar     *title,
12077                                              GtkCellRenderer *cell,
12078                                              ...)
12079 {
12080   GtkTreeViewColumn *column;
12081   gchar *attribute;
12082   va_list args;
12083   gint column_id;
12084
12085   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), -1);
12086
12087   column = gtk_tree_view_column_new ();
12088   if (tree_view->priv->fixed_height_mode)
12089     gtk_tree_view_column_set_sizing (column, GTK_TREE_VIEW_COLUMN_FIXED);
12090
12091   gtk_tree_view_column_set_title (column, title);
12092   gtk_tree_view_column_pack_start (column, cell, TRUE);
12093
12094   va_start (args, cell);
12095
12096   attribute = va_arg (args, gchar *);
12097
12098   while (attribute != NULL)
12099     {
12100       column_id = va_arg (args, gint);
12101       gtk_tree_view_column_add_attribute (column, cell, attribute, column_id);
12102       attribute = va_arg (args, gchar *);
12103     }
12104
12105   va_end (args);
12106
12107   return gtk_tree_view_insert_column (tree_view, column, position);
12108 }
12109
12110 /**
12111  * gtk_tree_view_insert_column_with_data_func:
12112  * @tree_view: a #GtkTreeView
12113  * @position: Position to insert, -1 for append
12114  * @title: column title
12115  * @cell: cell renderer for column
12116  * @func: function to set attributes of cell renderer
12117  * @data: data for @func
12118  * @dnotify: destroy notifier for @data
12119  *
12120  * Convenience function that inserts a new column into the #GtkTreeView
12121  * with the given cell renderer and a #GtkCellDataFunc to set cell renderer
12122  * attributes (normally using data from the model). See also
12123  * gtk_tree_view_column_set_cell_data_func(), gtk_tree_view_column_pack_start().
12124  * If @tree_view has "fixed_height" mode enabled, then the new column will have its
12125  * "sizing" property set to be GTK_TREE_VIEW_COLUMN_FIXED.
12126  *
12127  * Return value: number of columns in the tree view post-insert
12128  **/
12129 gint
12130 gtk_tree_view_insert_column_with_data_func  (GtkTreeView               *tree_view,
12131                                              gint                       position,
12132                                              const gchar               *title,
12133                                              GtkCellRenderer           *cell,
12134                                              GtkTreeCellDataFunc        func,
12135                                              gpointer                   data,
12136                                              GDestroyNotify             dnotify)
12137 {
12138   GtkTreeViewColumn *column;
12139
12140   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), -1);
12141
12142   column = gtk_tree_view_column_new ();
12143   if (tree_view->priv->fixed_height_mode)
12144     gtk_tree_view_column_set_sizing (column, GTK_TREE_VIEW_COLUMN_FIXED);
12145
12146   gtk_tree_view_column_set_title (column, title);
12147   gtk_tree_view_column_pack_start (column, cell, TRUE);
12148   gtk_tree_view_column_set_cell_data_func (column, cell, func, data, dnotify);
12149
12150   return gtk_tree_view_insert_column (tree_view, column, position);
12151 }
12152
12153 /**
12154  * gtk_tree_view_get_n_columns:
12155  * @tree_view: a #GtkTreeView
12156  *
12157  * Queries the number of columns in the given @tree_view.
12158  *
12159  * Returns: The number of columns in the @tree_view
12160  *
12161  * Since: 3.4
12162  **/
12163 guint
12164 gtk_tree_view_get_n_columns (GtkTreeView *tree_view)
12165 {
12166   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), 0);
12167
12168   return tree_view->priv->n_columns;
12169 }
12170
12171 /**
12172  * gtk_tree_view_get_column:
12173  * @tree_view: A #GtkTreeView.
12174  * @n: The position of the column, counting from 0.
12175  *
12176  * Gets the #GtkTreeViewColumn at the given position in the #tree_view.
12177  *
12178  * Return value: (transfer none): The #GtkTreeViewColumn, or %NULL if the
12179  *     position is outside the range of columns.
12180  **/
12181 GtkTreeViewColumn *
12182 gtk_tree_view_get_column (GtkTreeView *tree_view,
12183                           gint         n)
12184 {
12185   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), NULL);
12186
12187   if (n < 0 || n >= tree_view->priv->n_columns)
12188     return NULL;
12189
12190   if (tree_view->priv->columns == NULL)
12191     return NULL;
12192
12193   return GTK_TREE_VIEW_COLUMN (g_list_nth (tree_view->priv->columns, n)->data);
12194 }
12195
12196 /**
12197  * gtk_tree_view_get_columns:
12198  * @tree_view: A #GtkTreeView
12199  *
12200  * Returns a #GList of all the #GtkTreeViewColumn s currently in @tree_view.
12201  * The returned list must be freed with g_list_free ().
12202  *
12203  * Return value: (element-type GtkTreeViewColumn) (transfer container): A list of #GtkTreeViewColumn s
12204  **/
12205 GList *
12206 gtk_tree_view_get_columns (GtkTreeView *tree_view)
12207 {
12208   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), NULL);
12209
12210   return g_list_copy (tree_view->priv->columns);
12211 }
12212
12213 /**
12214  * gtk_tree_view_move_column_after:
12215  * @tree_view: A #GtkTreeView
12216  * @column: The #GtkTreeViewColumn to be moved.
12217  * @base_column: (allow-none): The #GtkTreeViewColumn to be moved relative to, or %NULL.
12218  *
12219  * Moves @column to be after to @base_column.  If @base_column is %NULL, then
12220  * @column is placed in the first position.
12221  **/
12222 void
12223 gtk_tree_view_move_column_after (GtkTreeView       *tree_view,
12224                                  GtkTreeViewColumn *column,
12225                                  GtkTreeViewColumn *base_column)
12226 {
12227   GList *column_list_el, *base_el = NULL;
12228
12229   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
12230
12231   column_list_el = g_list_find (tree_view->priv->columns, column);
12232   g_return_if_fail (column_list_el != NULL);
12233
12234   if (base_column)
12235     {
12236       base_el = g_list_find (tree_view->priv->columns, base_column);
12237       g_return_if_fail (base_el != NULL);
12238     }
12239
12240   if (column_list_el->prev == base_el)
12241     return;
12242
12243   tree_view->priv->columns = g_list_remove_link (tree_view->priv->columns, column_list_el);
12244   if (base_el == NULL)
12245     {
12246       column_list_el->prev = NULL;
12247       column_list_el->next = tree_view->priv->columns;
12248       if (column_list_el->next)
12249         column_list_el->next->prev = column_list_el;
12250       tree_view->priv->columns = column_list_el;
12251     }
12252   else
12253     {
12254       column_list_el->prev = base_el;
12255       column_list_el->next = base_el->next;
12256       if (column_list_el->next)
12257         column_list_el->next->prev = column_list_el;
12258       base_el->next = column_list_el;
12259     }
12260
12261   if (gtk_widget_get_realized (GTK_WIDGET (tree_view)))
12262     {
12263       gtk_widget_queue_resize (GTK_WIDGET (tree_view));
12264       gtk_tree_view_size_allocate_columns (GTK_WIDGET (tree_view), NULL);
12265     }
12266
12267   _gtk_tree_view_reset_header_styles (tree_view);
12268
12269   _gtk_tree_view_accessible_reorder_column (tree_view, column);
12270
12271   g_signal_emit (tree_view, tree_view_signals[COLUMNS_CHANGED], 0);
12272 }
12273
12274 /**
12275  * gtk_tree_view_set_expander_column:
12276  * @tree_view: A #GtkTreeView
12277  * @column: %NULL, or the column to draw the expander arrow at.
12278  *
12279  * Sets the column to draw the expander arrow at. It must be in @tree_view.
12280  * If @column is %NULL, then the expander arrow is always at the first
12281  * visible column.
12282  *
12283  * If you do not want expander arrow to appear in your tree, set the
12284  * expander column to a hidden column.
12285  **/
12286 void
12287 gtk_tree_view_set_expander_column (GtkTreeView       *tree_view,
12288                                    GtkTreeViewColumn *column)
12289 {
12290   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
12291   g_return_if_fail (column == NULL || GTK_IS_TREE_VIEW_COLUMN (column));
12292   g_return_if_fail (column == NULL || gtk_tree_view_column_get_tree_view (column) == GTK_WIDGET (tree_view));
12293
12294   if (tree_view->priv->expander_column != column)
12295     {
12296       tree_view->priv->expander_column = column;
12297       g_object_notify (G_OBJECT (tree_view), "expander-column");
12298     }
12299 }
12300
12301 /**
12302  * gtk_tree_view_get_expander_column:
12303  * @tree_view: A #GtkTreeView
12304  *
12305  * Returns the column that is the current expander column.
12306  * This column has the expander arrow drawn next to it.
12307  *
12308  * Return value: (transfer none): The expander column.
12309  **/
12310 GtkTreeViewColumn *
12311 gtk_tree_view_get_expander_column (GtkTreeView *tree_view)
12312 {
12313   GList *list;
12314
12315   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), NULL);
12316
12317   for (list = tree_view->priv->columns; list; list = list->next)
12318     if (gtk_tree_view_is_expander_column (tree_view, GTK_TREE_VIEW_COLUMN (list->data)))
12319       return (GtkTreeViewColumn *) list->data;
12320   return NULL;
12321 }
12322
12323
12324 /**
12325  * gtk_tree_view_set_column_drag_function:
12326  * @tree_view: A #GtkTreeView.
12327  * @func: (allow-none): A function to determine which columns are reorderable, or %NULL.
12328  * @user_data: (allow-none): User data to be passed to @func, or %NULL
12329  * @destroy: (allow-none): Destroy notifier for @user_data, or %NULL
12330  *
12331  * Sets a user function for determining where a column may be dropped when
12332  * dragged.  This function is called on every column pair in turn at the
12333  * beginning of a column drag to determine where a drop can take place.  The
12334  * arguments passed to @func are: the @tree_view, the #GtkTreeViewColumn being
12335  * dragged, the two #GtkTreeViewColumn s determining the drop spot, and
12336  * @user_data.  If either of the #GtkTreeViewColumn arguments for the drop spot
12337  * are %NULL, then they indicate an edge.  If @func is set to be %NULL, then
12338  * @tree_view reverts to the default behavior of allowing all columns to be
12339  * dropped everywhere.
12340  **/
12341 void
12342 gtk_tree_view_set_column_drag_function (GtkTreeView               *tree_view,
12343                                         GtkTreeViewColumnDropFunc  func,
12344                                         gpointer                   user_data,
12345                                         GDestroyNotify             destroy)
12346 {
12347   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
12348
12349   if (tree_view->priv->column_drop_func_data_destroy)
12350     tree_view->priv->column_drop_func_data_destroy (tree_view->priv->column_drop_func_data);
12351
12352   tree_view->priv->column_drop_func = func;
12353   tree_view->priv->column_drop_func_data = user_data;
12354   tree_view->priv->column_drop_func_data_destroy = destroy;
12355 }
12356
12357 /**
12358  * gtk_tree_view_scroll_to_point:
12359  * @tree_view: a #GtkTreeView
12360  * @tree_x: X coordinate of new top-left pixel of visible area, or -1
12361  * @tree_y: Y coordinate of new top-left pixel of visible area, or -1
12362  *
12363  * Scrolls the tree view such that the top-left corner of the visible
12364  * area is @tree_x, @tree_y, where @tree_x and @tree_y are specified
12365  * in tree coordinates.  The @tree_view must be realized before
12366  * this function is called.  If it isn't, you probably want to be
12367  * using gtk_tree_view_scroll_to_cell().
12368  *
12369  * If either @tree_x or @tree_y are -1, then that direction isn't scrolled.
12370  **/
12371 void
12372 gtk_tree_view_scroll_to_point (GtkTreeView *tree_view,
12373                                gint         tree_x,
12374                                gint         tree_y)
12375 {
12376   GtkAdjustment *hadj;
12377   GtkAdjustment *vadj;
12378
12379   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
12380   g_return_if_fail (gtk_widget_get_realized (GTK_WIDGET (tree_view)));
12381
12382   hadj = tree_view->priv->hadjustment;
12383   vadj = tree_view->priv->vadjustment;
12384
12385   if (tree_x != -1)
12386     gtk_adjustment_set_value (hadj, tree_x);
12387   if (tree_y != -1)
12388     gtk_adjustment_set_value (vadj, tree_y);
12389 }
12390
12391 /**
12392  * gtk_tree_view_scroll_to_cell:
12393  * @tree_view: A #GtkTreeView.
12394  * @path: (allow-none): The path of the row to move to, or %NULL.
12395  * @column: (allow-none): The #GtkTreeViewColumn to move horizontally to, or %NULL.
12396  * @use_align: whether to use alignment arguments, or %FALSE.
12397  * @row_align: The vertical alignment of the row specified by @path.
12398  * @col_align: The horizontal alignment of the column specified by @column.
12399  *
12400  * Moves the alignments of @tree_view to the position specified by @column and
12401  * @path.  If @column is %NULL, then no horizontal scrolling occurs.  Likewise,
12402  * if @path is %NULL no vertical scrolling occurs.  At a minimum, one of @column
12403  * or @path need to be non-%NULL.  @row_align determines where the row is
12404  * placed, and @col_align determines where @column is placed.  Both are expected
12405  * to be between 0.0 and 1.0. 0.0 means left/top alignment, 1.0 means
12406  * right/bottom alignment, 0.5 means center.
12407  *
12408  * If @use_align is %FALSE, then the alignment arguments are ignored, and the
12409  * tree does the minimum amount of work to scroll the cell onto the screen.
12410  * This means that the cell will be scrolled to the edge closest to its current
12411  * position.  If the cell is currently visible on the screen, nothing is done.
12412  *
12413  * This function only works if the model is set, and @path is a valid row on the
12414  * model.  If the model changes before the @tree_view is realized, the centered
12415  * path will be modified to reflect this change.
12416  **/
12417 void
12418 gtk_tree_view_scroll_to_cell (GtkTreeView       *tree_view,
12419                               GtkTreePath       *path,
12420                               GtkTreeViewColumn *column,
12421                               gboolean           use_align,
12422                               gfloat             row_align,
12423                               gfloat             col_align)
12424 {
12425   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
12426   g_return_if_fail (tree_view->priv->model != NULL);
12427   g_return_if_fail (tree_view->priv->tree != NULL);
12428   g_return_if_fail (row_align >= 0.0 && row_align <= 1.0);
12429   g_return_if_fail (col_align >= 0.0 && col_align <= 1.0);
12430   g_return_if_fail (path != NULL || column != NULL);
12431
12432 #if 0
12433   g_print ("gtk_tree_view_scroll_to_cell:\npath: %s\ncolumn: %s\nuse_align: %d\nrow_align: %f\ncol_align: %f\n",
12434            gtk_tree_path_to_string (path), column?"non-null":"null", use_align, row_align, col_align);
12435 #endif
12436   row_align = CLAMP (row_align, 0.0, 1.0);
12437   col_align = CLAMP (col_align, 0.0, 1.0);
12438
12439
12440   /* Note: Despite the benefits that come from having one code path for the
12441    * scrolling code, we short-circuit validate_visible_area's immplementation as
12442    * it is much slower than just going to the point.
12443    */
12444   if (!gtk_widget_get_visible (GTK_WIDGET (tree_view)) ||
12445       !gtk_widget_get_realized (GTK_WIDGET (tree_view)) ||
12446       _gtk_widget_get_alloc_needed (GTK_WIDGET (tree_view)) ||
12447       GTK_RBNODE_FLAG_SET (tree_view->priv->tree->root, GTK_RBNODE_DESCENDANTS_INVALID))
12448     {
12449       if (tree_view->priv->scroll_to_path)
12450         gtk_tree_row_reference_free (tree_view->priv->scroll_to_path);
12451
12452       tree_view->priv->scroll_to_path = NULL;
12453       tree_view->priv->scroll_to_column = NULL;
12454
12455       if (path)
12456         tree_view->priv->scroll_to_path = gtk_tree_row_reference_new_proxy (G_OBJECT (tree_view), tree_view->priv->model, path);
12457       if (column)
12458         tree_view->priv->scroll_to_column = column;
12459       tree_view->priv->scroll_to_use_align = use_align;
12460       tree_view->priv->scroll_to_row_align = row_align;
12461       tree_view->priv->scroll_to_col_align = col_align;
12462
12463       install_presize_handler (tree_view);
12464     }
12465   else
12466     {
12467       GdkRectangle cell_rect;
12468       GdkRectangle vis_rect;
12469       gint dest_x, dest_y;
12470
12471       gtk_tree_view_get_background_area (tree_view, path, column, &cell_rect);
12472       gtk_tree_view_get_visible_rect (tree_view, &vis_rect);
12473
12474       cell_rect.y = TREE_WINDOW_Y_TO_RBTREE_Y (tree_view, cell_rect.y);
12475
12476       dest_x = vis_rect.x;
12477       dest_y = vis_rect.y;
12478
12479       if (column)
12480         {
12481           if (use_align)
12482             {
12483               dest_x = cell_rect.x - ((vis_rect.width - cell_rect.width) * col_align);
12484             }
12485           else
12486             {
12487               if (cell_rect.x < vis_rect.x)
12488                 dest_x = cell_rect.x;
12489               if (cell_rect.x + cell_rect.width > vis_rect.x + vis_rect.width)
12490                 dest_x = cell_rect.x + cell_rect.width - vis_rect.width;
12491             }
12492         }
12493
12494       if (path)
12495         {
12496           if (use_align)
12497             {
12498               dest_y = cell_rect.y - ((vis_rect.height - cell_rect.height) * row_align);
12499               dest_y = MAX (dest_y, 0);
12500             }
12501           else
12502             {
12503               if (cell_rect.y < vis_rect.y)
12504                 dest_y = cell_rect.y;
12505               if (cell_rect.y + cell_rect.height > vis_rect.y + vis_rect.height)
12506                 dest_y = cell_rect.y + cell_rect.height - vis_rect.height;
12507             }
12508         }
12509
12510       gtk_tree_view_scroll_to_point (tree_view, dest_x, dest_y);
12511     }
12512 }
12513
12514 /**
12515  * gtk_tree_view_row_activated:
12516  * @tree_view: A #GtkTreeView
12517  * @path: The #GtkTreePath to be activated.
12518  * @column: The #GtkTreeViewColumn to be activated.
12519  *
12520  * Activates the cell determined by @path and @column.
12521  **/
12522 void
12523 gtk_tree_view_row_activated (GtkTreeView       *tree_view,
12524                              GtkTreePath       *path,
12525                              GtkTreeViewColumn *column)
12526 {
12527   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
12528
12529   g_signal_emit (tree_view, tree_view_signals[ROW_ACTIVATED], 0, path, column);
12530 }
12531
12532
12533 static void
12534 gtk_tree_view_expand_all_emission_helper (GtkRBTree *tree,
12535                                           GtkRBNode *node,
12536                                           gpointer   data)
12537 {
12538   GtkTreeView *tree_view = data;
12539
12540   if ((node->flags & GTK_RBNODE_IS_PARENT) == GTK_RBNODE_IS_PARENT &&
12541       node->children)
12542     {
12543       GtkTreePath *path;
12544       GtkTreeIter iter;
12545
12546       path = _gtk_tree_path_new_from_rbtree (tree, node);
12547       gtk_tree_model_get_iter (tree_view->priv->model, &iter, path);
12548
12549       g_signal_emit (tree_view, tree_view_signals[ROW_EXPANDED], 0, &iter, path);
12550
12551       gtk_tree_path_free (path);
12552     }
12553
12554   if (node->children)
12555     _gtk_rbtree_traverse (node->children,
12556                           node->children->root,
12557                           G_PRE_ORDER,
12558                           gtk_tree_view_expand_all_emission_helper,
12559                           tree_view);
12560 }
12561
12562 /**
12563  * gtk_tree_view_expand_all:
12564  * @tree_view: A #GtkTreeView.
12565  *
12566  * Recursively expands all nodes in the @tree_view.
12567  **/
12568 void
12569 gtk_tree_view_expand_all (GtkTreeView *tree_view)
12570 {
12571   GtkTreePath *path;
12572   GtkRBTree *tree;
12573   GtkRBNode *node;
12574
12575   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
12576
12577   if (tree_view->priv->tree == NULL)
12578     return;
12579
12580   path = gtk_tree_path_new_first ();
12581   _gtk_tree_view_find_node (tree_view, path, &tree, &node);
12582
12583   while (node)
12584     {
12585       gtk_tree_view_real_expand_row (tree_view, path, tree, node, TRUE, FALSE);
12586       node = _gtk_rbtree_next (tree, node);
12587       gtk_tree_path_next (path);
12588   }
12589
12590   gtk_tree_path_free (path);
12591 }
12592
12593 /**
12594  * gtk_tree_view_collapse_all:
12595  * @tree_view: A #GtkTreeView.
12596  *
12597  * Recursively collapses all visible, expanded nodes in @tree_view.
12598  **/
12599 void
12600 gtk_tree_view_collapse_all (GtkTreeView *tree_view)
12601 {
12602   GtkRBTree *tree;
12603   GtkRBNode *node;
12604   GtkTreePath *path;
12605   gint *indices;
12606
12607   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
12608
12609   if (tree_view->priv->tree == NULL)
12610     return;
12611
12612   path = gtk_tree_path_new ();
12613   gtk_tree_path_down (path);
12614   indices = gtk_tree_path_get_indices (path);
12615
12616   tree = tree_view->priv->tree;
12617   node = _gtk_rbtree_first (tree);
12618
12619   while (node)
12620     {
12621       if (node->children)
12622         gtk_tree_view_real_collapse_row (tree_view, path, tree, node, FALSE);
12623       indices[0]++;
12624       node = _gtk_rbtree_next (tree, node);
12625     }
12626
12627   gtk_tree_path_free (path);
12628 }
12629
12630 /**
12631  * gtk_tree_view_expand_to_path:
12632  * @tree_view: A #GtkTreeView.
12633  * @path: path to a row.
12634  *
12635  * Expands the row at @path. This will also expand all parent rows of
12636  * @path as necessary.
12637  *
12638  * Since: 2.2
12639  **/
12640 void
12641 gtk_tree_view_expand_to_path (GtkTreeView *tree_view,
12642                               GtkTreePath *path)
12643 {
12644   gint i, depth;
12645   gint *indices;
12646   GtkTreePath *tmp;
12647
12648   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
12649   g_return_if_fail (path != NULL);
12650
12651   depth = gtk_tree_path_get_depth (path);
12652   indices = gtk_tree_path_get_indices (path);
12653
12654   tmp = gtk_tree_path_new ();
12655   g_return_if_fail (tmp != NULL);
12656
12657   for (i = 0; i < depth; i++)
12658     {
12659       gtk_tree_path_append_index (tmp, indices[i]);
12660       gtk_tree_view_expand_row (tree_view, tmp, FALSE);
12661     }
12662
12663   gtk_tree_path_free (tmp);
12664 }
12665
12666 /* FIXME the bool return values for expand_row and collapse_row are
12667  * not analagous; they should be TRUE if the row had children and
12668  * was not already in the requested state.
12669  */
12670
12671
12672 static gboolean
12673 gtk_tree_view_real_expand_row (GtkTreeView *tree_view,
12674                                GtkTreePath *path,
12675                                GtkRBTree   *tree,
12676                                GtkRBNode   *node,
12677                                gboolean     open_all,
12678                                gboolean     animate)
12679 {
12680   GtkTreeIter iter;
12681   GtkTreeIter temp;
12682   gboolean expand;
12683
12684   if (animate)
12685     g_object_get (gtk_widget_get_settings (GTK_WIDGET (tree_view)),
12686                   "gtk-enable-animations", &animate,
12687                   NULL);
12688
12689   remove_auto_expand_timeout (tree_view);
12690
12691   if (node->children && !open_all)
12692     return FALSE;
12693
12694   if (! GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_PARENT))
12695     return FALSE;
12696
12697   gtk_tree_model_get_iter (tree_view->priv->model, &iter, path);
12698   if (! gtk_tree_model_iter_has_child (tree_view->priv->model, &iter))
12699     return FALSE;
12700
12701
12702    if (node->children && open_all)
12703     {
12704       gboolean retval = FALSE;
12705       GtkTreePath *tmp_path = gtk_tree_path_copy (path);
12706
12707       gtk_tree_path_append_index (tmp_path, 0);
12708       tree = node->children;
12709       node = _gtk_rbtree_first (tree);
12710       /* try to expand the children */
12711       do
12712         {
12713          gboolean t;
12714          t = gtk_tree_view_real_expand_row (tree_view, tmp_path, tree, node,
12715                                             TRUE, animate);
12716          if (t)
12717            retval = TRUE;
12718
12719          gtk_tree_path_next (tmp_path);
12720          node = _gtk_rbtree_next (tree, node);
12721        }
12722       while (node != NULL);
12723
12724       gtk_tree_path_free (tmp_path);
12725
12726       return retval;
12727     }
12728
12729   g_signal_emit (tree_view, tree_view_signals[TEST_EXPAND_ROW], 0, &iter, path, &expand);
12730
12731   if (!gtk_tree_model_iter_has_child (tree_view->priv->model, &iter))
12732     return FALSE;
12733
12734   if (expand)
12735     return FALSE;
12736
12737   node->children = _gtk_rbtree_new ();
12738   node->children->parent_tree = tree;
12739   node->children->parent_node = node;
12740
12741   gtk_tree_model_iter_children (tree_view->priv->model, &temp, &iter);
12742
12743   gtk_tree_view_build_tree (tree_view,
12744                             node->children,
12745                             &temp,
12746                             gtk_tree_path_get_depth (path) + 1,
12747                             open_all);
12748
12749   _gtk_tree_view_accessible_add (tree_view, node->children, NULL);
12750   _gtk_tree_view_accessible_add_state (tree_view,
12751                                        tree, node,
12752                                        GTK_CELL_RENDERER_EXPANDED);
12753
12754   if (animate)
12755     {
12756       GtkStyleContext *context;
12757
12758       context = gtk_widget_get_style_context (GTK_WIDGET (tree_view));
12759
12760       gtk_style_context_save (context);
12761       gtk_style_context_add_class (context, GTK_STYLE_CLASS_EXPANDER);
12762
12763       gtk_style_context_notify_state_change (context, tree_view->priv->bin_window,
12764                                              node, GTK_STATE_ACTIVE, TRUE);
12765
12766       _gtk_style_context_invalidate_animation_areas (context);
12767       gtk_style_context_restore (context);
12768     }
12769
12770   install_presize_handler (tree_view);
12771
12772   g_signal_emit (tree_view, tree_view_signals[ROW_EXPANDED], 0, &iter, path);
12773   if (open_all && node->children)
12774     {
12775       _gtk_rbtree_traverse (node->children,
12776                             node->children->root,
12777                             G_PRE_ORDER,
12778                             gtk_tree_view_expand_all_emission_helper,
12779                             tree_view);
12780     }
12781   return TRUE;
12782 }
12783
12784
12785 /**
12786  * gtk_tree_view_expand_row:
12787  * @tree_view: a #GtkTreeView
12788  * @path: path to a row
12789  * @open_all: whether to recursively expand, or just expand immediate children
12790  *
12791  * Opens the row so its children are visible.
12792  *
12793  * Return value: %TRUE if the row existed and had children
12794  **/
12795 gboolean
12796 gtk_tree_view_expand_row (GtkTreeView *tree_view,
12797                           GtkTreePath *path,
12798                           gboolean     open_all)
12799 {
12800   GtkRBTree *tree;
12801   GtkRBNode *node;
12802
12803   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), FALSE);
12804   g_return_val_if_fail (tree_view->priv->model != NULL, FALSE);
12805   g_return_val_if_fail (path != NULL, FALSE);
12806
12807   if (_gtk_tree_view_find_node (tree_view,
12808                                 path,
12809                                 &tree,
12810                                 &node))
12811     return FALSE;
12812
12813   if (tree != NULL)
12814     return gtk_tree_view_real_expand_row (tree_view, path, tree, node, open_all, FALSE);
12815   else
12816     return FALSE;
12817 }
12818
12819 static gboolean
12820 gtk_tree_view_real_collapse_row (GtkTreeView *tree_view,
12821                                  GtkTreePath *path,
12822                                  GtkRBTree   *tree,
12823                                  GtkRBNode   *node,
12824                                  gboolean     animate)
12825 {
12826   GtkTreeIter iter;
12827   GtkTreeIter children;
12828   gboolean collapse;
12829   gint x, y;
12830   GList *list;
12831   GdkWindow *child;
12832   gboolean selection_changed, cursor_changed;
12833
12834   if (animate)
12835     g_object_get (gtk_widget_get_settings (GTK_WIDGET (tree_view)),
12836                   "gtk-enable-animations", &animate,
12837                   NULL);
12838
12839   remove_auto_expand_timeout (tree_view);
12840
12841   if (node->children == NULL)
12842     return FALSE;
12843   gtk_tree_model_get_iter (tree_view->priv->model, &iter, path);
12844
12845   g_signal_emit (tree_view, tree_view_signals[TEST_COLLAPSE_ROW], 0, &iter, path, &collapse);
12846
12847   if (collapse)
12848     return FALSE;
12849
12850   /* if the prelighted node is a child of us, we want to unprelight it.  We have
12851    * a chance to prelight the correct node below */
12852
12853   if (tree_view->priv->prelight_tree)
12854     {
12855       GtkRBTree *parent_tree;
12856       GtkRBNode *parent_node;
12857
12858       parent_tree = tree_view->priv->prelight_tree->parent_tree;
12859       parent_node = tree_view->priv->prelight_tree->parent_node;
12860       while (parent_tree)
12861         {
12862           if (parent_tree == tree && parent_node == node)
12863             {
12864               ensure_unprelighted (tree_view);
12865               break;
12866             }
12867           parent_node = parent_tree->parent_node;
12868           parent_tree = parent_tree->parent_tree;
12869         }
12870     }
12871
12872   TREE_VIEW_INTERNAL_ASSERT (gtk_tree_model_iter_children (tree_view->priv->model, &children, &iter), FALSE);
12873
12874   for (list = tree_view->priv->columns; list; list = list->next)
12875     {
12876       GtkTreeViewColumn *column = list->data;
12877
12878       if (gtk_tree_view_column_get_visible (column) == FALSE)
12879         continue;
12880       if (gtk_tree_view_column_get_sizing (column) == GTK_TREE_VIEW_COLUMN_AUTOSIZE)
12881         _gtk_tree_view_column_cell_set_dirty (column, TRUE);
12882     }
12883
12884   if (tree_view->priv->destroy_count_func)
12885     {
12886       GtkTreePath *child_path;
12887       gint child_count = 0;
12888       child_path = gtk_tree_path_copy (path);
12889       gtk_tree_path_down (child_path);
12890       if (node->children)
12891         _gtk_rbtree_traverse (node->children, node->children->root, G_POST_ORDER, count_children_helper, &child_count);
12892       tree_view->priv->destroy_count_func (tree_view, child_path, child_count, tree_view->priv->destroy_count_data);
12893       gtk_tree_path_free (child_path);
12894     }
12895
12896   if (tree_view->priv->cursor_node)
12897     {
12898       cursor_changed = (node->children == tree_view->priv->cursor_tree)
12899                        || _gtk_rbtree_contains (node->children, tree_view->priv->cursor_tree);
12900     }
12901   else
12902     cursor_changed = FALSE;
12903
12904   if (gtk_tree_row_reference_valid (tree_view->priv->anchor))
12905     {
12906       GtkTreePath *anchor_path = gtk_tree_row_reference_get_path (tree_view->priv->anchor);
12907       if (gtk_tree_path_is_ancestor (path, anchor_path))
12908         {
12909           gtk_tree_row_reference_free (tree_view->priv->anchor);
12910           tree_view->priv->anchor = NULL;
12911         }
12912       gtk_tree_path_free (anchor_path);
12913     }
12914
12915   selection_changed = gtk_tree_view_unref_and_check_selection_tree (tree_view, node->children);
12916
12917   /* Stop a pending double click */
12918   tree_view->priv->last_button_x = -1;
12919   tree_view->priv->last_button_y = -1;
12920
12921   _gtk_tree_view_accessible_remove (tree_view, node->children, NULL);
12922   _gtk_tree_view_accessible_remove_state (tree_view,
12923                                           tree, node,
12924                                           GTK_CELL_RENDERER_EXPANDED);
12925
12926   _gtk_rbtree_remove (node->children);
12927
12928   if (cursor_changed)
12929     gtk_tree_view_real_set_cursor (tree_view, path, CLEAR_AND_SELECT | CURSOR_INVALID);
12930   if (selection_changed)
12931     g_signal_emit_by_name (tree_view->priv->selection, "changed");
12932
12933   if (animate)
12934     {
12935       GtkStyleContext *context;
12936
12937       context = gtk_widget_get_style_context (GTK_WIDGET (tree_view));
12938
12939       gtk_style_context_save (context);
12940       gtk_style_context_add_class (context, GTK_STYLE_CLASS_EXPANDER);
12941
12942       gtk_style_context_notify_state_change (context, tree_view->priv->bin_window,
12943                                              node, GTK_STATE_ACTIVE, FALSE);
12944
12945       _gtk_style_context_invalidate_animation_areas (context);
12946       gtk_style_context_restore (context);
12947     }
12948
12949   if (gtk_widget_get_mapped (GTK_WIDGET (tree_view)))
12950     {
12951       gtk_widget_queue_resize (GTK_WIDGET (tree_view));
12952     }
12953
12954   g_signal_emit (tree_view, tree_view_signals[ROW_COLLAPSED], 0, &iter, path);
12955
12956   if (gtk_widget_get_mapped (GTK_WIDGET (tree_view)))
12957     {
12958       /* now that we've collapsed all rows, we want to try to set the prelight
12959        * again. To do this, we fake a motion event and send it to ourselves. */
12960
12961       child = gdk_window_get_device_position (gdk_window_get_parent (tree_view->priv->bin_window),
12962                                               gdk_device_manager_get_client_pointer (
12963                                                 gdk_display_get_device_manager (
12964                                                   gtk_widget_get_display (GTK_WIDGET (tree_view)))),
12965                                               &x, &y, NULL);
12966       if (child == tree_view->priv->bin_window)
12967         {
12968           GdkEventMotion event;
12969           gint child_x, child_y;
12970
12971           gdk_window_get_position (child, &child_x, &child_y);
12972
12973           event.window = tree_view->priv->bin_window;
12974           event.x = x - child_x;
12975           event.y = y - child_y;
12976
12977           /* despite the fact this isn't a real event, I'm almost positive it will
12978            * never trigger a drag event.  maybe_drag is the only function that uses
12979            * more than just event.x and event.y. */
12980           gtk_tree_view_motion_bin_window (GTK_WIDGET (tree_view), &event);
12981         }
12982     }
12983
12984   return TRUE;
12985 }
12986
12987 /**
12988  * gtk_tree_view_collapse_row:
12989  * @tree_view: a #GtkTreeView
12990  * @path: path to a row in the @tree_view
12991  *
12992  * Collapses a row (hides its child rows, if they exist).
12993  *
12994  * Return value: %TRUE if the row was collapsed.
12995  **/
12996 gboolean
12997 gtk_tree_view_collapse_row (GtkTreeView *tree_view,
12998                             GtkTreePath *path)
12999 {
13000   GtkRBTree *tree;
13001   GtkRBNode *node;
13002
13003   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), FALSE);
13004   g_return_val_if_fail (tree_view->priv->tree != NULL, FALSE);
13005   g_return_val_if_fail (path != NULL, FALSE);
13006
13007   if (_gtk_tree_view_find_node (tree_view,
13008                                 path,
13009                                 &tree,
13010                                 &node))
13011     return FALSE;
13012
13013   if (tree == NULL || node->children == NULL)
13014     return FALSE;
13015
13016   return gtk_tree_view_real_collapse_row (tree_view, path, tree, node, FALSE);
13017 }
13018
13019 static void
13020 gtk_tree_view_map_expanded_rows_helper (GtkTreeView            *tree_view,
13021                                         GtkRBTree              *tree,
13022                                         GtkTreePath            *path,
13023                                         GtkTreeViewMappingFunc  func,
13024                                         gpointer                user_data)
13025 {
13026   GtkRBNode *node;
13027
13028   if (tree == NULL || tree->root == NULL)
13029     return;
13030
13031   node = _gtk_rbtree_first (tree);
13032
13033   while (node)
13034     {
13035       if (node->children)
13036         {
13037           (* func) (tree_view, path, user_data);
13038           gtk_tree_path_down (path);
13039           gtk_tree_view_map_expanded_rows_helper (tree_view, node->children, path, func, user_data);
13040           gtk_tree_path_up (path);
13041         }
13042       gtk_tree_path_next (path);
13043       node = _gtk_rbtree_next (tree, node);
13044     }
13045 }
13046
13047 /**
13048  * gtk_tree_view_map_expanded_rows:
13049  * @tree_view: A #GtkTreeView
13050  * @func: (scope call): A function to be called
13051  * @data: User data to be passed to the function.
13052  *
13053  * Calls @func on all expanded rows.
13054  **/
13055 void
13056 gtk_tree_view_map_expanded_rows (GtkTreeView            *tree_view,
13057                                  GtkTreeViewMappingFunc  func,
13058                                  gpointer                user_data)
13059 {
13060   GtkTreePath *path;
13061
13062   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
13063   g_return_if_fail (func != NULL);
13064
13065   path = gtk_tree_path_new_first ();
13066
13067   gtk_tree_view_map_expanded_rows_helper (tree_view,
13068                                           tree_view->priv->tree,
13069                                           path, func, user_data);
13070
13071   gtk_tree_path_free (path);
13072 }
13073
13074 /**
13075  * gtk_tree_view_row_expanded:
13076  * @tree_view: A #GtkTreeView.
13077  * @path: A #GtkTreePath to test expansion state.
13078  *
13079  * Returns %TRUE if the node pointed to by @path is expanded in @tree_view.
13080  *
13081  * Return value: %TRUE if #path is expanded.
13082  **/
13083 gboolean
13084 gtk_tree_view_row_expanded (GtkTreeView *tree_view,
13085                             GtkTreePath *path)
13086 {
13087   GtkRBTree *tree;
13088   GtkRBNode *node;
13089
13090   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), FALSE);
13091   g_return_val_if_fail (path != NULL, FALSE);
13092
13093   _gtk_tree_view_find_node (tree_view, path, &tree, &node);
13094
13095   if (node == NULL)
13096     return FALSE;
13097
13098   return (node->children != NULL);
13099 }
13100
13101 /**
13102  * gtk_tree_view_get_reorderable:
13103  * @tree_view: a #GtkTreeView
13104  *
13105  * Retrieves whether the user can reorder the tree via drag-and-drop. See
13106  * gtk_tree_view_set_reorderable().
13107  *
13108  * Return value: %TRUE if the tree can be reordered.
13109  **/
13110 gboolean
13111 gtk_tree_view_get_reorderable (GtkTreeView *tree_view)
13112 {
13113   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), FALSE);
13114
13115   return tree_view->priv->reorderable;
13116 }
13117
13118 /**
13119  * gtk_tree_view_set_reorderable:
13120  * @tree_view: A #GtkTreeView.
13121  * @reorderable: %TRUE, if the tree can be reordered.
13122  *
13123  * This function is a convenience function to allow you to reorder
13124  * models that support the #GtkTreeDragSourceIface and the
13125  * #GtkTreeDragDestIface.  Both #GtkTreeStore and #GtkListStore support
13126  * these.  If @reorderable is %TRUE, then the user can reorder the
13127  * model by dragging and dropping rows. The developer can listen to
13128  * these changes by connecting to the model's row_inserted and
13129  * row_deleted signals. The reordering is implemented by setting up
13130  * the tree view as a drag source and destination. Therefore, drag and
13131  * drop can not be used in a reorderable view for any other purpose.
13132  *
13133  * This function does not give you any degree of control over the order -- any
13134  * reordering is allowed.  If more control is needed, you should probably
13135  * handle drag and drop manually.
13136  **/
13137 void
13138 gtk_tree_view_set_reorderable (GtkTreeView *tree_view,
13139                                gboolean     reorderable)
13140 {
13141   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
13142
13143   reorderable = reorderable != FALSE;
13144
13145   if (tree_view->priv->reorderable == reorderable)
13146     return;
13147
13148   if (reorderable)
13149     {
13150       const GtkTargetEntry row_targets[] = {
13151         { "GTK_TREE_MODEL_ROW", GTK_TARGET_SAME_WIDGET, 0 }
13152       };
13153
13154       gtk_tree_view_enable_model_drag_source (tree_view,
13155                                               GDK_BUTTON1_MASK,
13156                                               row_targets,
13157                                               G_N_ELEMENTS (row_targets),
13158                                               GDK_ACTION_MOVE);
13159       gtk_tree_view_enable_model_drag_dest (tree_view,
13160                                             row_targets,
13161                                             G_N_ELEMENTS (row_targets),
13162                                             GDK_ACTION_MOVE);
13163     }
13164   else
13165     {
13166       gtk_tree_view_unset_rows_drag_source (tree_view);
13167       gtk_tree_view_unset_rows_drag_dest (tree_view);
13168     }
13169
13170   tree_view->priv->reorderable = reorderable;
13171
13172   g_object_notify (G_OBJECT (tree_view), "reorderable");
13173 }
13174
13175 static void
13176 gtk_tree_view_real_set_cursor (GtkTreeView     *tree_view,
13177                                GtkTreePath     *path,
13178                                SetCursorFlags   flags)
13179 {
13180   if (!(flags & CURSOR_INVALID) && tree_view->priv->cursor_node)
13181     {
13182       _gtk_tree_view_queue_draw_node (tree_view,
13183                                       tree_view->priv->cursor_tree,
13184                                       tree_view->priv->cursor_node,
13185                                       NULL);
13186     }
13187
13188   /* One cannot set the cursor on a separator.   Also, if
13189    * _gtk_tree_view_find_node returns TRUE, it ran out of tree
13190    * before finding the tree and node belonging to path.  The
13191    * path maps to a non-existing path and we will silently bail out.
13192    * We unset tree and node to avoid further processing.
13193    */
13194   if (path == NULL ||
13195       row_is_separator (tree_view, NULL, path)
13196       || _gtk_tree_view_find_node (tree_view,
13197                                    path,
13198                                    &tree_view->priv->cursor_tree,
13199                                    &tree_view->priv->cursor_node))
13200     {
13201       tree_view->priv->cursor_tree = NULL;
13202       tree_view->priv->cursor_node = NULL;
13203     }
13204
13205   if (tree_view->priv->cursor_node != NULL)
13206     {
13207       GtkRBTree *new_tree = NULL;
13208       GtkRBNode *new_node = NULL;
13209
13210       if ((flags & CLEAR_AND_SELECT) && !tree_view->priv->modify_selection_pressed)
13211         {
13212           GtkTreeSelectMode mode = 0;
13213
13214           if (tree_view->priv->extend_selection_pressed)
13215             mode |= GTK_TREE_SELECT_MODE_EXTEND;
13216
13217           _gtk_tree_selection_internal_select_node (tree_view->priv->selection,
13218                                                     tree_view->priv->cursor_node,
13219                                                     tree_view->priv->cursor_tree,
13220                                                     path,
13221                                                     mode,
13222                                                     FALSE);
13223         }
13224
13225       /* We have to re-find tree and node here again, somebody might have
13226        * cleared the node or the whole tree in the GtkTreeSelection::changed
13227        * callback. If the nodes differ we bail out here.
13228        */
13229       _gtk_tree_view_find_node (tree_view, path, &new_tree, &new_node);
13230
13231       if (tree_view->priv->cursor_node != new_node)
13232         return;
13233
13234       if (flags & CLAMP_NODE)
13235         {
13236           gtk_tree_view_clamp_node_visible (tree_view,
13237                                             tree_view->priv->cursor_tree,
13238                                             tree_view->priv->cursor_node);
13239           _gtk_tree_view_queue_draw_node (tree_view,
13240                                           tree_view->priv->cursor_tree,
13241                                           tree_view->priv->cursor_node,
13242                                           NULL);
13243         }
13244     }
13245
13246   g_signal_emit (tree_view, tree_view_signals[CURSOR_CHANGED], 0);
13247 }
13248
13249 /**
13250  * gtk_tree_view_get_cursor:
13251  * @tree_view: A #GtkTreeView
13252  * @path: (out) (transfer full) (allow-none): A pointer to be filled with the current cursor path, or %NULL
13253  * @focus_column: (out) (transfer none) (allow-none): A pointer to be filled with the current focus column, or %NULL
13254  *
13255  * Fills in @path and @focus_column with the current path and focus column.  If
13256  * the cursor isn't currently set, then *@path will be %NULL.  If no column
13257  * currently has focus, then *@focus_column will be %NULL.
13258  *
13259  * The returned #GtkTreePath must be freed with gtk_tree_path_free() when
13260  * you are done with it.
13261  **/
13262 void
13263 gtk_tree_view_get_cursor (GtkTreeView        *tree_view,
13264                           GtkTreePath       **path,
13265                           GtkTreeViewColumn **focus_column)
13266 {
13267   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
13268
13269   if (path)
13270     {
13271       if (tree_view->priv->cursor_node)
13272         *path = _gtk_tree_path_new_from_rbtree (tree_view->priv->cursor_tree,
13273                                                 tree_view->priv->cursor_node);
13274       else
13275         *path = NULL;
13276     }
13277
13278   if (focus_column)
13279     {
13280       *focus_column = tree_view->priv->focus_column;
13281     }
13282 }
13283
13284 /**
13285  * gtk_tree_view_set_cursor:
13286  * @tree_view: A #GtkTreeView
13287  * @path: A #GtkTreePath
13288  * @focus_column: (allow-none): A #GtkTreeViewColumn, or %NULL
13289  * @start_editing: %TRUE if the specified cell should start being edited.
13290  *
13291  * Sets the current keyboard focus to be at @path, and selects it.  This is
13292  * useful when you want to focus the user's attention on a particular row.  If
13293  * @focus_column is not %NULL, then focus is given to the column specified by
13294  * it. Additionally, if @focus_column is specified, and @start_editing is
13295  * %TRUE, then editing should be started in the specified cell.
13296  * This function is often followed by @gtk_widget_grab_focus (@tree_view)
13297  * in order to give keyboard focus to the widget.  Please note that editing
13298  * can only happen when the widget is realized.
13299  *
13300  * If @path is invalid for @model, the current cursor (if any) will be unset
13301  * and the function will return without failing.
13302  **/
13303 void
13304 gtk_tree_view_set_cursor (GtkTreeView       *tree_view,
13305                           GtkTreePath       *path,
13306                           GtkTreeViewColumn *focus_column,
13307                           gboolean           start_editing)
13308 {
13309   gtk_tree_view_set_cursor_on_cell (tree_view, path, focus_column,
13310                                     NULL, start_editing);
13311 }
13312
13313 /**
13314  * gtk_tree_view_set_cursor_on_cell:
13315  * @tree_view: A #GtkTreeView
13316  * @path: A #GtkTreePath
13317  * @focus_column: (allow-none): A #GtkTreeViewColumn, or %NULL
13318  * @focus_cell: (allow-none): A #GtkCellRenderer, or %NULL
13319  * @start_editing: %TRUE if the specified cell should start being edited.
13320  *
13321  * Sets the current keyboard focus to be at @path, and selects it.  This is
13322  * useful when you want to focus the user's attention on a particular row.  If
13323  * @focus_column is not %NULL, then focus is given to the column specified by
13324  * it. If @focus_column and @focus_cell are not %NULL, and @focus_column
13325  * contains 2 or more editable or activatable cells, then focus is given to
13326  * the cell specified by @focus_cell. Additionally, if @focus_column is
13327  * specified, and @start_editing is %TRUE, then editing should be started in
13328  * the specified cell.  This function is often followed by
13329  * @gtk_widget_grab_focus (@tree_view) in order to give keyboard focus to the
13330  * widget.  Please note that editing can only happen when the widget is
13331  * realized.
13332  *
13333  * If @path is invalid for @model, the current cursor (if any) will be unset
13334  * and the function will return without failing.
13335  *
13336  * Since: 2.2
13337  **/
13338 void
13339 gtk_tree_view_set_cursor_on_cell (GtkTreeView       *tree_view,
13340                                   GtkTreePath       *path,
13341                                   GtkTreeViewColumn *focus_column,
13342                                   GtkCellRenderer   *focus_cell,
13343                                   gboolean           start_editing)
13344 {
13345   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
13346   g_return_if_fail (path != NULL);
13347   g_return_if_fail (focus_column == NULL || GTK_IS_TREE_VIEW_COLUMN (focus_column));
13348
13349   if (!tree_view->priv->model)
13350     return;
13351
13352   if (focus_cell)
13353     {
13354       g_return_if_fail (focus_column);
13355       g_return_if_fail (GTK_IS_CELL_RENDERER (focus_cell));
13356     }
13357
13358   /* cancel the current editing, if it exists */
13359   if (tree_view->priv->edited_column &&
13360       gtk_cell_area_get_edit_widget
13361       (gtk_cell_layout_get_area (GTK_CELL_LAYOUT (tree_view->priv->edited_column))))
13362     gtk_tree_view_stop_editing (tree_view, TRUE);
13363
13364   gtk_tree_view_real_set_cursor (tree_view, path, CLEAR_AND_SELECT | CLAMP_NODE);
13365
13366   if (focus_column &&
13367       gtk_tree_view_column_get_visible (focus_column))
13368     {
13369       GList *list;
13370       gboolean column_in_tree = FALSE;
13371
13372       for (list = tree_view->priv->columns; list; list = list->next)
13373         if (list->data == focus_column)
13374           {
13375             column_in_tree = TRUE;
13376             break;
13377           }
13378       g_return_if_fail (column_in_tree);
13379       _gtk_tree_view_set_focus_column (tree_view, focus_column);
13380       if (focus_cell)
13381         gtk_tree_view_column_focus_cell (focus_column, focus_cell);
13382       if (start_editing)
13383         gtk_tree_view_start_editing (tree_view, path, TRUE);
13384     }
13385 }
13386
13387 /**
13388  * gtk_tree_view_get_bin_window:
13389  * @tree_view: A #GtkTreeView
13390  *
13391  * Returns the window that @tree_view renders to.
13392  * This is used primarily to compare to <literal>event->window</literal>
13393  * to confirm that the event on @tree_view is on the right window.
13394  *
13395  * Return value: (transfer none): A #GdkWindow, or %NULL when @tree_view
13396  *     hasn't been realized yet
13397  **/
13398 GdkWindow *
13399 gtk_tree_view_get_bin_window (GtkTreeView *tree_view)
13400 {
13401   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), NULL);
13402
13403   return tree_view->priv->bin_window;
13404 }
13405
13406 /**
13407  * gtk_tree_view_get_path_at_pos:
13408  * @tree_view: A #GtkTreeView.
13409  * @x: The x position to be identified (relative to bin_window).
13410  * @y: The y position to be identified (relative to bin_window).
13411  * @path: (out) (allow-none): A pointer to a #GtkTreePath pointer to be filled in, or %NULL
13412  * @column: (out) (transfer none) (allow-none): A pointer to a #GtkTreeViewColumn pointer to be filled in, or %NULL
13413  * @cell_x: (out) (allow-none): A pointer where the X coordinate relative to the cell can be placed, or %NULL
13414  * @cell_y: (out) (allow-none): A pointer where the Y coordinate relative to the cell can be placed, or %NULL
13415  *
13416  * Finds the path at the point (@x, @y), relative to bin_window coordinates
13417  * (please see gtk_tree_view_get_bin_window()).
13418  * That is, @x and @y are relative to an events coordinates. @x and @y must
13419  * come from an event on the @tree_view only where <literal>event->window ==
13420  * gtk_tree_view_get_bin_window (<!-- -->)</literal>. It is primarily for
13421  * things like popup menus. If @path is non-%NULL, then it will be filled
13422  * with the #GtkTreePath at that point.  This path should be freed with
13423  * gtk_tree_path_free().  If @column is non-%NULL, then it will be filled
13424  * with the column at that point.  @cell_x and @cell_y return the coordinates
13425  * relative to the cell background (i.e. the @background_area passed to
13426  * gtk_cell_renderer_render()).  This function is only meaningful if
13427  * @tree_view is realized.  Therefore this function will always return %FALSE
13428  * if @tree_view is not realized or does not have a model.
13429  *
13430  * For converting widget coordinates (eg. the ones you get from
13431  * GtkWidget::query-tooltip), please see
13432  * gtk_tree_view_convert_widget_to_bin_window_coords().
13433  *
13434  * Return value: %TRUE if a row exists at that coordinate.
13435  **/
13436 gboolean
13437 gtk_tree_view_get_path_at_pos (GtkTreeView        *tree_view,
13438                                gint                x,
13439                                gint                y,
13440                                GtkTreePath       **path,
13441                                GtkTreeViewColumn **column,
13442                                gint               *cell_x,
13443                                gint               *cell_y)
13444 {
13445   GtkRBTree *tree;
13446   GtkRBNode *node;
13447   gint y_offset;
13448
13449   g_return_val_if_fail (tree_view != NULL, FALSE);
13450
13451   if (path)
13452     *path = NULL;
13453   if (column)
13454     *column = NULL;
13455
13456   if (tree_view->priv->bin_window == NULL)
13457     return FALSE;
13458
13459   if (tree_view->priv->tree == NULL)
13460     return FALSE;
13461
13462   if (x > gtk_adjustment_get_upper (tree_view->priv->hadjustment))
13463     return FALSE;
13464
13465   if (x < 0 || y < 0)
13466     return FALSE;
13467
13468   if (column || cell_x)
13469     {
13470       GtkTreeViewColumn *tmp_column;
13471       GtkTreeViewColumn *last_column = NULL;
13472       GList *list;
13473       gint remaining_x = x;
13474       gboolean found = FALSE;
13475       gboolean rtl;
13476       gint width;
13477
13478       rtl = (gtk_widget_get_direction (GTK_WIDGET (tree_view)) == GTK_TEXT_DIR_RTL);
13479       for (list = (rtl ? g_list_last (tree_view->priv->columns) : g_list_first (tree_view->priv->columns));
13480            list;
13481            list = (rtl ? list->prev : list->next))
13482         {
13483           tmp_column = list->data;
13484
13485           if (gtk_tree_view_column_get_visible (tmp_column) == FALSE)
13486             continue;
13487
13488           last_column = tmp_column;
13489           width = gtk_tree_view_column_get_width (tmp_column);
13490           if (remaining_x <= width)
13491             {
13492               found = TRUE;
13493
13494               if (column)
13495                 *column = tmp_column;
13496
13497               if (cell_x)
13498                 *cell_x = remaining_x;
13499
13500               break;
13501             }
13502           remaining_x -= width;
13503         }
13504
13505       /* If found is FALSE and there is a last_column, then it the remainder
13506        * space is in that area
13507        */
13508       if (!found)
13509         {
13510           if (last_column)
13511             {
13512               if (column)
13513                 *column = last_column;
13514
13515               if (cell_x)
13516                 *cell_x = gtk_tree_view_column_get_width (last_column) + remaining_x;
13517             }
13518           else
13519             {
13520               return FALSE;
13521             }
13522         }
13523     }
13524
13525   y_offset = _gtk_rbtree_find_offset (tree_view->priv->tree,
13526                                       TREE_WINDOW_Y_TO_RBTREE_Y (tree_view, y),
13527                                       &tree, &node);
13528
13529   if (tree == NULL)
13530     return FALSE;
13531
13532   if (cell_y)
13533     *cell_y = y_offset;
13534
13535   if (path)
13536     *path = _gtk_tree_path_new_from_rbtree (tree, node);
13537
13538   return TRUE;
13539 }
13540
13541
13542 static inline gint
13543 gtk_tree_view_get_cell_area_height (GtkTreeView *tree_view,
13544                                     GtkRBNode   *node,
13545                                     gint         vertical_separator)
13546 {
13547   int height;
13548
13549   /* The "cell" areas are the cell_area passed in to gtk_cell_renderer_render(),
13550    * i.e. just the cells, no spacing.
13551    *
13552    * The cell area height is at least expander_size - vertical_separator.
13553    * For regular nodes, the height is then at least expander_size. We should
13554    * be able to enforce the expander_size minimum here, because this
13555    * function will not be called for irregular (e.g. separator) rows.
13556    */
13557   height = gtk_tree_view_get_row_height (tree_view, node);
13558   if (height < tree_view->priv->expander_size)
13559     height = tree_view->priv->expander_size;
13560
13561   return height - vertical_separator;
13562 }
13563
13564 static inline gint
13565 gtk_tree_view_get_cell_area_y_offset (GtkTreeView *tree_view,
13566                                       GtkRBTree   *tree,
13567                                       GtkRBNode   *node,
13568                                       gint         vertical_separator)
13569 {
13570   int offset;
13571
13572   offset = gtk_tree_view_get_row_y_offset (tree_view, tree, node);
13573   offset += vertical_separator / 2;
13574
13575   return offset;
13576 }
13577
13578 /**
13579  * gtk_tree_view_get_cell_area:
13580  * @tree_view: a #GtkTreeView
13581  * @path: (allow-none): a #GtkTreePath for the row, or %NULL to get only horizontal coordinates
13582  * @column: (allow-none): a #GtkTreeViewColumn for the column, or %NULL to get only vertical coordinates
13583  * @rect: (out): rectangle to fill with cell rect
13584  *
13585  * Fills the bounding rectangle in bin_window coordinates for the cell at the
13586  * row specified by @path and the column specified by @column.  If @path is
13587  * %NULL, or points to a path not currently displayed, the @y and @height fields
13588  * of the rectangle will be filled with 0. If @column is %NULL, the @x and @width
13589  * fields will be filled with 0.  The sum of all cell rects does not cover the
13590  * entire tree; there are extra pixels in between rows, for example. The
13591  * returned rectangle is equivalent to the @cell_area passed to
13592  * gtk_cell_renderer_render().  This function is only valid if @tree_view is
13593  * realized.
13594  **/
13595 void
13596 gtk_tree_view_get_cell_area (GtkTreeView        *tree_view,
13597                              GtkTreePath        *path,
13598                              GtkTreeViewColumn  *column,
13599                              GdkRectangle       *rect)
13600 {
13601   GtkRBTree *tree = NULL;
13602   GtkRBNode *node = NULL;
13603   gint vertical_separator;
13604   gint horizontal_separator;
13605
13606   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
13607   g_return_if_fail (column == NULL || GTK_IS_TREE_VIEW_COLUMN (column));
13608   g_return_if_fail (rect != NULL);
13609   g_return_if_fail (!column || gtk_tree_view_column_get_tree_view (column) == (GtkWidget *) tree_view);
13610   g_return_if_fail (gtk_widget_get_realized (GTK_WIDGET (tree_view)));
13611
13612   gtk_widget_style_get (GTK_WIDGET (tree_view),
13613                         "vertical-separator", &vertical_separator,
13614                         "horizontal-separator", &horizontal_separator,
13615                         NULL);
13616
13617   rect->x = 0;
13618   rect->y = 0;
13619   rect->width = 0;
13620   rect->height = 0;
13621
13622   if (column)
13623     {
13624       rect->x = gtk_tree_view_column_get_x_offset (column) + horizontal_separator/2;
13625       rect->width = gtk_tree_view_column_get_width (column) - horizontal_separator;
13626     }
13627
13628   if (path)
13629     {
13630       gboolean ret = _gtk_tree_view_find_node (tree_view, path, &tree, &node);
13631
13632       /* Get vertical coords */
13633       if ((!ret && tree == NULL) || ret)
13634         return;
13635
13636       if (row_is_separator (tree_view, NULL, path))
13637         {
13638           /* There isn't really a "cell area" for separator, so we
13639            * return the y, height values for background area instead.
13640            */
13641           rect->y = gtk_tree_view_get_row_y_offset (tree_view, tree, node);
13642           rect->height = gtk_tree_view_get_row_height (tree_view, node);
13643         }
13644       else
13645         {
13646           rect->y = gtk_tree_view_get_cell_area_y_offset (tree_view, tree, node,
13647                                                           vertical_separator);
13648           rect->height = gtk_tree_view_get_cell_area_height (tree_view, node,
13649                                                              vertical_separator);
13650         }
13651
13652       if (column &&
13653           gtk_tree_view_is_expander_column (tree_view, column))
13654         {
13655           gint depth = gtk_tree_path_get_depth (path);
13656           gboolean rtl;
13657
13658           rtl = gtk_widget_get_direction (GTK_WIDGET (tree_view)) == GTK_TEXT_DIR_RTL;
13659
13660           if (!rtl)
13661             rect->x += (depth - 1) * tree_view->priv->level_indentation;
13662           rect->width -= (depth - 1) * tree_view->priv->level_indentation;
13663
13664           if (gtk_tree_view_draw_expanders (tree_view))
13665             {
13666               if (!rtl)
13667                 rect->x += depth * tree_view->priv->expander_size;
13668               rect->width -= depth * tree_view->priv->expander_size;
13669             }
13670
13671           rect->width = MAX (rect->width, 0);
13672         }
13673     }
13674 }
13675
13676 static inline gint
13677 gtk_tree_view_get_row_height (GtkTreeView *tree_view,
13678                               GtkRBNode   *node)
13679 {
13680   int height;
13681
13682   /* The "background" areas of all rows/cells add up to cover the entire tree.
13683    * The background includes all inter-row and inter-cell spacing.
13684    *
13685    * If the row pointed at by node does not have a height set, we default
13686    * to expander_size, which is the minimum height for regular nodes.
13687    * Non-regular nodes (e.g. separators) can have a height set smaller
13688    * than expander_size and should not be overruled here.
13689    */
13690   height = GTK_RBNODE_GET_HEIGHT (node);
13691   if (height <= 0)
13692     height = tree_view->priv->expander_size;
13693
13694   return height;
13695 }
13696
13697 static inline gint
13698 gtk_tree_view_get_row_y_offset (GtkTreeView *tree_view,
13699                                 GtkRBTree   *tree,
13700                                 GtkRBNode   *node)
13701 {
13702   int offset;
13703
13704   offset = _gtk_rbtree_node_find_offset (tree, node);
13705
13706   return RBTREE_Y_TO_TREE_WINDOW_Y (tree_view, offset);
13707 }
13708
13709 /**
13710  * gtk_tree_view_get_background_area:
13711  * @tree_view: a #GtkTreeView
13712  * @path: (allow-none): a #GtkTreePath for the row, or %NULL to get only horizontal coordinates
13713  * @column: (allow-none): a #GtkTreeViewColumn for the column, or %NULL to get only vertical coordiantes
13714  * @rect: (out): rectangle to fill with cell background rect
13715  *
13716  * Fills the bounding rectangle in bin_window coordinates for the cell at the
13717  * row specified by @path and the column specified by @column.  If @path is
13718  * %NULL, or points to a node not found in the tree, the @y and @height fields of
13719  * the rectangle will be filled with 0. If @column is %NULL, the @x and @width
13720  * fields will be filled with 0.  The returned rectangle is equivalent to the
13721  * @background_area passed to gtk_cell_renderer_render().  These background
13722  * areas tile to cover the entire bin window.  Contrast with the @cell_area,
13723  * returned by gtk_tree_view_get_cell_area(), which returns only the cell
13724  * itself, excluding surrounding borders and the tree expander area.
13725  *
13726  **/
13727 void
13728 gtk_tree_view_get_background_area (GtkTreeView        *tree_view,
13729                                    GtkTreePath        *path,
13730                                    GtkTreeViewColumn  *column,
13731                                    GdkRectangle       *rect)
13732 {
13733   GtkRBTree *tree = NULL;
13734   GtkRBNode *node = NULL;
13735
13736   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
13737   g_return_if_fail (column == NULL || GTK_IS_TREE_VIEW_COLUMN (column));
13738   g_return_if_fail (rect != NULL);
13739
13740   rect->x = 0;
13741   rect->y = 0;
13742   rect->width = 0;
13743   rect->height = 0;
13744
13745   if (path)
13746     {
13747       /* Get vertical coords */
13748
13749       if (!_gtk_tree_view_find_node (tree_view, path, &tree, &node) &&
13750           tree == NULL)
13751         return;
13752
13753       rect->y = gtk_tree_view_get_row_y_offset (tree_view, tree, node);
13754       rect->height = gtk_tree_view_get_row_height (tree_view, node);
13755     }
13756
13757   if (column)
13758     {
13759       gint x2 = 0;
13760
13761       gtk_tree_view_get_background_xrange (tree_view, tree, column, &rect->x, &x2);
13762       rect->width = x2 - rect->x;
13763     }
13764 }
13765
13766 /**
13767  * gtk_tree_view_get_visible_rect:
13768  * @tree_view: a #GtkTreeView
13769  * @visible_rect: (out): rectangle to fill
13770  *
13771  * Fills @visible_rect with the currently-visible region of the
13772  * buffer, in tree coordinates. Convert to bin_window coordinates with
13773  * gtk_tree_view_convert_tree_to_bin_window_coords().
13774  * Tree coordinates start at 0,0 for row 0 of the tree, and cover the entire
13775  * scrollable area of the tree.
13776  **/
13777 void
13778 gtk_tree_view_get_visible_rect (GtkTreeView  *tree_view,
13779                                 GdkRectangle *visible_rect)
13780 {
13781   GtkAllocation allocation;
13782   GtkWidget *widget;
13783
13784   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
13785
13786   widget = GTK_WIDGET (tree_view);
13787
13788   if (visible_rect)
13789     {
13790       gtk_widget_get_allocation (widget, &allocation);
13791       visible_rect->x = gtk_adjustment_get_value (tree_view->priv->hadjustment);
13792       visible_rect->y = gtk_adjustment_get_value (tree_view->priv->vadjustment);
13793       visible_rect->width = allocation.width;
13794       visible_rect->height = allocation.height - gtk_tree_view_get_effective_header_height (tree_view);
13795     }
13796 }
13797
13798 /**
13799  * gtk_tree_view_convert_widget_to_tree_coords:
13800  * @tree_view: a #GtkTreeView
13801  * @wx: X coordinate relative to the widget
13802  * @wy: Y coordinate relative to the widget
13803  * @tx: (out): return location for tree X coordinate
13804  * @ty: (out): return location for tree Y coordinate
13805  *
13806  * Converts widget coordinates to coordinates for the
13807  * tree (the full scrollable area of the tree).
13808  *
13809  * Since: 2.12
13810  **/
13811 void
13812 gtk_tree_view_convert_widget_to_tree_coords (GtkTreeView *tree_view,
13813                                              gint         wx,
13814                                              gint         wy,
13815                                              gint        *tx,
13816                                              gint        *ty)
13817 {
13818   gint x, y;
13819
13820   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
13821
13822   gtk_tree_view_convert_widget_to_bin_window_coords (tree_view,
13823                                                      wx, wy,
13824                                                      &x, &y);
13825   gtk_tree_view_convert_bin_window_to_tree_coords (tree_view,
13826                                                    x, y,
13827                                                    tx, ty);
13828 }
13829
13830 /**
13831  * gtk_tree_view_convert_tree_to_widget_coords:
13832  * @tree_view: a #GtkTreeView
13833  * @tx: X coordinate relative to the tree
13834  * @ty: Y coordinate relative to the tree
13835  * @wx: (out): return location for widget X coordinate
13836  * @wy: (out): return location for widget Y coordinate
13837  *
13838  * Converts tree coordinates (coordinates in full scrollable area of the tree)
13839  * to widget coordinates.
13840  *
13841  * Since: 2.12
13842  **/
13843 void
13844 gtk_tree_view_convert_tree_to_widget_coords (GtkTreeView *tree_view,
13845                                              gint         tx,
13846                                              gint         ty,
13847                                              gint        *wx,
13848                                              gint        *wy)
13849 {
13850   gint x, y;
13851
13852   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
13853
13854   gtk_tree_view_convert_tree_to_bin_window_coords (tree_view,
13855                                                    tx, ty,
13856                                                    &x, &y);
13857   gtk_tree_view_convert_bin_window_to_widget_coords (tree_view,
13858                                                      x, y,
13859                                                      wx, wy);
13860 }
13861
13862 /**
13863  * gtk_tree_view_convert_widget_to_bin_window_coords:
13864  * @tree_view: a #GtkTreeView
13865  * @wx: X coordinate relative to the widget
13866  * @wy: Y coordinate relative to the widget
13867  * @bx: (out): return location for bin_window X coordinate
13868  * @by: (out): return location for bin_window Y coordinate
13869  *
13870  * Converts widget coordinates to coordinates for the bin_window
13871  * (see gtk_tree_view_get_bin_window()).
13872  *
13873  * Since: 2.12
13874  **/
13875 void
13876 gtk_tree_view_convert_widget_to_bin_window_coords (GtkTreeView *tree_view,
13877                                                    gint         wx,
13878                                                    gint         wy,
13879                                                    gint        *bx,
13880                                                    gint        *by)
13881 {
13882   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
13883
13884   if (bx)
13885     *bx = wx + gtk_adjustment_get_value (tree_view->priv->hadjustment);
13886   if (by)
13887     *by = wy - gtk_tree_view_get_effective_header_height (tree_view);
13888 }
13889
13890 /**
13891  * gtk_tree_view_convert_bin_window_to_widget_coords:
13892  * @tree_view: a #GtkTreeView
13893  * @bx: bin_window X coordinate
13894  * @by: bin_window Y coordinate
13895  * @wx: (out): return location for widget X coordinate
13896  * @wy: (out): return location for widget Y coordinate
13897  *
13898  * Converts bin_window coordinates (see gtk_tree_view_get_bin_window())
13899  * to widget relative coordinates.
13900  *
13901  * Since: 2.12
13902  **/
13903 void
13904 gtk_tree_view_convert_bin_window_to_widget_coords (GtkTreeView *tree_view,
13905                                                    gint         bx,
13906                                                    gint         by,
13907                                                    gint        *wx,
13908                                                    gint        *wy)
13909 {
13910   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
13911
13912   if (wx)
13913     *wx = bx - gtk_adjustment_get_value (tree_view->priv->hadjustment);
13914   if (wy)
13915     *wy = by + gtk_tree_view_get_effective_header_height (tree_view);
13916 }
13917
13918 /**
13919  * gtk_tree_view_convert_tree_to_bin_window_coords:
13920  * @tree_view: a #GtkTreeView
13921  * @tx: tree X coordinate
13922  * @ty: tree Y coordinate
13923  * @bx: (out): return location for X coordinate relative to bin_window
13924  * @by: (out): return location for Y coordinate relative to bin_window
13925  *
13926  * Converts tree coordinates (coordinates in full scrollable area of the tree)
13927  * to bin_window coordinates.
13928  *
13929  * Since: 2.12
13930  **/
13931 void
13932 gtk_tree_view_convert_tree_to_bin_window_coords (GtkTreeView *tree_view,
13933                                                  gint         tx,
13934                                                  gint         ty,
13935                                                  gint        *bx,
13936                                                  gint        *by)
13937 {
13938   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
13939
13940   if (bx)
13941     *bx = tx;
13942   if (by)
13943     *by = ty - tree_view->priv->dy;
13944 }
13945
13946 /**
13947  * gtk_tree_view_convert_bin_window_to_tree_coords:
13948  * @tree_view: a #GtkTreeView
13949  * @bx: X coordinate relative to bin_window
13950  * @by: Y coordinate relative to bin_window
13951  * @tx: (out): return location for tree X coordinate
13952  * @ty: (out): return location for tree Y coordinate
13953  *
13954  * Converts bin_window coordinates to coordinates for the
13955  * tree (the full scrollable area of the tree).
13956  *
13957  * Since: 2.12
13958  **/
13959 void
13960 gtk_tree_view_convert_bin_window_to_tree_coords (GtkTreeView *tree_view,
13961                                                  gint         bx,
13962                                                  gint         by,
13963                                                  gint        *tx,
13964                                                  gint        *ty)
13965 {
13966   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
13967
13968   if (tx)
13969     *tx = bx;
13970   if (ty)
13971     *ty = by + tree_view->priv->dy;
13972 }
13973
13974
13975
13976 /**
13977  * gtk_tree_view_get_visible_range:
13978  * @tree_view: A #GtkTreeView
13979  * @start_path: (out) (allow-none): Return location for start of region,
13980  *              or %NULL.
13981  * @end_path: (out) (allow-none): Return location for end of region, or %NULL.
13982  *
13983  * Sets @start_path and @end_path to be the first and last visible path.
13984  * Note that there may be invisible paths in between.
13985  *
13986  * The paths should be freed with gtk_tree_path_free() after use.
13987  *
13988  * Returns: %TRUE, if valid paths were placed in @start_path and @end_path.
13989  *
13990  * Since: 2.8
13991  **/
13992 gboolean
13993 gtk_tree_view_get_visible_range (GtkTreeView  *tree_view,
13994                                  GtkTreePath **start_path,
13995                                  GtkTreePath **end_path)
13996 {
13997   GtkRBTree *tree;
13998   GtkRBNode *node;
13999   gboolean retval;
14000
14001   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), FALSE);
14002
14003   if (!tree_view->priv->tree)
14004     return FALSE;
14005
14006   retval = TRUE;
14007
14008   if (start_path)
14009     {
14010       _gtk_rbtree_find_offset (tree_view->priv->tree,
14011                                TREE_WINDOW_Y_TO_RBTREE_Y (tree_view, 0),
14012                                &tree, &node);
14013       if (node)
14014         *start_path = _gtk_tree_path_new_from_rbtree (tree, node);
14015       else
14016         retval = FALSE;
14017     }
14018
14019   if (end_path)
14020     {
14021       gint y;
14022
14023       if (tree_view->priv->height < gtk_adjustment_get_page_size (tree_view->priv->vadjustment))
14024         y = tree_view->priv->height - 1;
14025       else
14026         y = TREE_WINDOW_Y_TO_RBTREE_Y (tree_view, gtk_adjustment_get_page_size (tree_view->priv->vadjustment)) - 1;
14027
14028       _gtk_rbtree_find_offset (tree_view->priv->tree, y, &tree, &node);
14029       if (node)
14030         *end_path = _gtk_tree_path_new_from_rbtree (tree, node);
14031       else
14032         retval = FALSE;
14033     }
14034
14035   return retval;
14036 }
14037
14038 /**
14039  * gtk_tree_view_is_blank_at_pos:
14040  * @tree_view: A #GtkTreeView
14041  * @x: The x position to be identified (relative to bin_window)
14042  * @y: The y position to be identified (relative to bin_window)
14043  * @path: (out) (allow-none): A pointer to a #GtkTreePath pointer to be filled in, or %NULL
14044  * @column: (out) (allow-none): A pointer to a #GtkTreeViewColumn pointer to be filled in, or %NULL
14045  * @cell_x: (out) (allow-none): A pointer where the X coordinate relative to the cell can be placed, or %NULL
14046  * @cell_y: (out) (allow-none): A pointer where the Y coordinate relative to the cell can be placed, or %NULL
14047  *
14048  * Determine whether the point (@x, @y) in @tree_view is blank, that is no
14049  * cell content nor an expander arrow is drawn at the location. If so, the
14050  * location can be considered as the background. You might wish to take
14051  * special action on clicks on the background, such as clearing a current
14052  * selection, having a custom context menu or starting rubber banding.
14053  *
14054  * The @x and @y coordinate that are provided must be relative to bin_window
14055  * coordinates.  That is, @x and @y must come from an event on @tree_view
14056  * where <literal>event->window == gtk_tree_view_get_bin_window (<!-- -->)</literal>.
14057  *
14058  * For converting widget coordinates (eg. the ones you get from
14059  * GtkWidget::query-tooltip), please see
14060  * gtk_tree_view_convert_widget_to_bin_window_coords().
14061  *
14062  * The @path, @column, @cell_x and @cell_y arguments will be filled in
14063  * likewise as for gtk_tree_view_get_path_at_pos().  Please see
14064  * gtk_tree_view_get_path_at_pos() for more information.
14065  *
14066  * Return value: %TRUE if the area at the given coordinates is blank,
14067  * %FALSE otherwise.
14068  *
14069  * Since: 3.0
14070  */
14071 gboolean
14072 gtk_tree_view_is_blank_at_pos (GtkTreeView       *tree_view,
14073                                gint                x,
14074                                gint                y,
14075                                GtkTreePath       **path,
14076                                GtkTreeViewColumn **column,
14077                                gint               *cell_x,
14078                                gint               *cell_y)
14079 {
14080   GtkRBTree *tree;
14081   GtkRBNode *node;
14082   GtkTreeIter iter;
14083   GtkTreePath *real_path;
14084   GtkTreeViewColumn *real_column;
14085   GdkRectangle cell_area, background_area;
14086
14087   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), FALSE);
14088
14089   if (!gtk_tree_view_get_path_at_pos (tree_view, x, y,
14090                                       &real_path, &real_column,
14091                                       cell_x, cell_y))
14092     /* If there's no path here, it is blank */
14093     return TRUE;
14094
14095   if (path)
14096     *path = real_path;
14097
14098   if (column)
14099     *column = real_column;
14100
14101   gtk_tree_model_get_iter (tree_view->priv->model, &iter, real_path);
14102   _gtk_tree_view_find_node (tree_view, real_path, &tree, &node);
14103
14104   /* Check if there's an expander arrow at (x, y) */
14105   if (real_column == tree_view->priv->expander_column
14106       && gtk_tree_view_draw_expanders (tree_view))
14107     {
14108       gboolean over_arrow;
14109
14110       over_arrow = coords_are_over_arrow (tree_view, tree, node, x, y);
14111
14112       if (over_arrow)
14113         {
14114           if (!path)
14115             gtk_tree_path_free (real_path);
14116           return FALSE;
14117         }
14118     }
14119
14120   /* Otherwise, have the column see if there's a cell at (x, y) */
14121   gtk_tree_view_column_cell_set_cell_data (real_column,
14122                                            tree_view->priv->model,
14123                                            &iter,
14124                                            GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_PARENT),
14125                                            node->children ? TRUE : FALSE);
14126
14127   gtk_tree_view_get_background_area (tree_view, real_path, real_column,
14128                                      &background_area);
14129   gtk_tree_view_get_cell_area (tree_view, real_path, real_column,
14130                                &cell_area);
14131
14132   if (!path)
14133     gtk_tree_path_free (real_path);
14134
14135   return _gtk_tree_view_column_is_blank_at_pos (real_column,
14136                                                 &cell_area,
14137                                                 &background_area,
14138                                                 x, y);
14139 }
14140
14141 static void
14142 unset_reorderable (GtkTreeView *tree_view)
14143 {
14144   if (tree_view->priv->reorderable)
14145     {
14146       tree_view->priv->reorderable = FALSE;
14147       g_object_notify (G_OBJECT (tree_view), "reorderable");
14148     }
14149 }
14150
14151 /**
14152  * gtk_tree_view_enable_model_drag_source:
14153  * @tree_view: a #GtkTreeView
14154  * @start_button_mask: Mask of allowed buttons to start drag
14155  * @targets: (array length=n_targets): the table of targets that the drag will support
14156  * @n_targets: the number of items in @targets
14157  * @actions: the bitmask of possible actions for a drag from this
14158  *    widget
14159  *
14160  * Turns @tree_view into a drag source for automatic DND. Calling this
14161  * method sets #GtkTreeView:reorderable to %FALSE.
14162  **/
14163 void
14164 gtk_tree_view_enable_model_drag_source (GtkTreeView              *tree_view,
14165                                         GdkModifierType           start_button_mask,
14166                                         const GtkTargetEntry     *targets,
14167                                         gint                      n_targets,
14168                                         GdkDragAction             actions)
14169 {
14170   TreeViewDragInfo *di;
14171
14172   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
14173
14174   gtk_drag_source_set (GTK_WIDGET (tree_view),
14175                        0,
14176                        targets,
14177                        n_targets,
14178                        actions);
14179
14180   di = ensure_info (tree_view);
14181
14182   di->start_button_mask = start_button_mask;
14183   di->source_actions = actions;
14184   di->source_set = TRUE;
14185
14186   unset_reorderable (tree_view);
14187 }
14188
14189 /**
14190  * gtk_tree_view_enable_model_drag_dest:
14191  * @tree_view: a #GtkTreeView
14192  * @targets: (array length=n_targets): the table of targets that
14193  *           the drag will support
14194  * @n_targets: the number of items in @targets
14195  * @actions: the bitmask of possible actions for a drag from this
14196  *    widget
14197  *
14198  * Turns @tree_view into a drop destination for automatic DND. Calling
14199  * this method sets #GtkTreeView:reorderable to %FALSE.
14200  **/
14201 void
14202 gtk_tree_view_enable_model_drag_dest (GtkTreeView              *tree_view,
14203                                       const GtkTargetEntry     *targets,
14204                                       gint                      n_targets,
14205                                       GdkDragAction             actions)
14206 {
14207   TreeViewDragInfo *di;
14208
14209   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
14210
14211   gtk_drag_dest_set (GTK_WIDGET (tree_view),
14212                      0,
14213                      targets,
14214                      n_targets,
14215                      actions);
14216
14217   di = ensure_info (tree_view);
14218   di->dest_set = TRUE;
14219
14220   unset_reorderable (tree_view);
14221 }
14222
14223 /**
14224  * gtk_tree_view_unset_rows_drag_source:
14225  * @tree_view: a #GtkTreeView
14226  *
14227  * Undoes the effect of
14228  * gtk_tree_view_enable_model_drag_source(). Calling this method sets
14229  * #GtkTreeView:reorderable to %FALSE.
14230  **/
14231 void
14232 gtk_tree_view_unset_rows_drag_source (GtkTreeView *tree_view)
14233 {
14234   TreeViewDragInfo *di;
14235
14236   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
14237
14238   di = get_info (tree_view);
14239
14240   if (di)
14241     {
14242       if (di->source_set)
14243         {
14244           gtk_drag_source_unset (GTK_WIDGET (tree_view));
14245           di->source_set = FALSE;
14246         }
14247
14248       if (!di->dest_set && !di->source_set)
14249         remove_info (tree_view);
14250     }
14251
14252   unset_reorderable (tree_view);
14253 }
14254
14255 /**
14256  * gtk_tree_view_unset_rows_drag_dest:
14257  * @tree_view: a #GtkTreeView
14258  *
14259  * Undoes the effect of
14260  * gtk_tree_view_enable_model_drag_dest(). Calling this method sets
14261  * #GtkTreeView:reorderable to %FALSE.
14262  **/
14263 void
14264 gtk_tree_view_unset_rows_drag_dest (GtkTreeView *tree_view)
14265 {
14266   TreeViewDragInfo *di;
14267
14268   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
14269
14270   di = get_info (tree_view);
14271
14272   if (di)
14273     {
14274       if (di->dest_set)
14275         {
14276           gtk_drag_dest_unset (GTK_WIDGET (tree_view));
14277           di->dest_set = FALSE;
14278         }
14279
14280       if (!di->dest_set && !di->source_set)
14281         remove_info (tree_view);
14282     }
14283
14284   unset_reorderable (tree_view);
14285 }
14286
14287 /**
14288  * gtk_tree_view_set_drag_dest_row:
14289  * @tree_view: a #GtkTreeView
14290  * @path: (allow-none): The path of the row to highlight, or %NULL
14291  * @pos: Specifies whether to drop before, after or into the row
14292  *
14293  * Sets the row that is highlighted for feedback.
14294  * If @path is %NULL, an existing highlight is removed.
14295  */
14296 void
14297 gtk_tree_view_set_drag_dest_row (GtkTreeView            *tree_view,
14298                                  GtkTreePath            *path,
14299                                  GtkTreeViewDropPosition pos)
14300 {
14301   GtkTreePath *current_dest;
14302
14303   /* Note; this function is exported to allow a custom DND
14304    * implementation, so it can't touch TreeViewDragInfo
14305    */
14306
14307   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
14308
14309   current_dest = NULL;
14310
14311   if (tree_view->priv->drag_dest_row)
14312     {
14313       current_dest = gtk_tree_row_reference_get_path (tree_view->priv->drag_dest_row);
14314       gtk_tree_row_reference_free (tree_view->priv->drag_dest_row);
14315     }
14316
14317   /* special case a drop on an empty model */
14318   tree_view->priv->empty_view_drop = 0;
14319
14320   if (pos == GTK_TREE_VIEW_DROP_BEFORE && path
14321       && gtk_tree_path_get_depth (path) == 1
14322       && gtk_tree_path_get_indices (path)[0] == 0)
14323     {
14324       gint n_children;
14325
14326       n_children = gtk_tree_model_iter_n_children (tree_view->priv->model,
14327                                                    NULL);
14328
14329       if (!n_children)
14330         tree_view->priv->empty_view_drop = 1;
14331     }
14332
14333   tree_view->priv->drag_dest_pos = pos;
14334
14335   if (path)
14336     {
14337       tree_view->priv->drag_dest_row =
14338         gtk_tree_row_reference_new_proxy (G_OBJECT (tree_view), tree_view->priv->model, path);
14339       gtk_tree_view_queue_draw_path (tree_view, path, NULL);
14340     }
14341   else
14342     tree_view->priv->drag_dest_row = NULL;
14343
14344   if (current_dest)
14345     {
14346       GtkRBTree *tree, *new_tree;
14347       GtkRBNode *node, *new_node;
14348
14349       _gtk_tree_view_find_node (tree_view, current_dest, &tree, &node);
14350       _gtk_tree_view_queue_draw_node (tree_view, tree, node, NULL);
14351
14352       if (tree && node)
14353         {
14354           _gtk_rbtree_next_full (tree, node, &new_tree, &new_node);
14355           if (new_tree && new_node)
14356             _gtk_tree_view_queue_draw_node (tree_view, new_tree, new_node, NULL);
14357
14358           _gtk_rbtree_prev_full (tree, node, &new_tree, &new_node);
14359           if (new_tree && new_node)
14360             _gtk_tree_view_queue_draw_node (tree_view, new_tree, new_node, NULL);
14361         }
14362       gtk_tree_path_free (current_dest);
14363     }
14364 }
14365
14366 /**
14367  * gtk_tree_view_get_drag_dest_row:
14368  * @tree_view: a #GtkTreeView
14369  * @path: (out) (allow-none): Return location for the path of the highlighted row, or %NULL.
14370  * @pos: (out) (allow-none): Return location for the drop position, or %NULL
14371  *
14372  * Gets information about the row that is highlighted for feedback.
14373  **/
14374 void
14375 gtk_tree_view_get_drag_dest_row (GtkTreeView              *tree_view,
14376                                  GtkTreePath             **path,
14377                                  GtkTreeViewDropPosition  *pos)
14378 {
14379   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
14380
14381   if (path)
14382     {
14383       if (tree_view->priv->drag_dest_row)
14384         *path = gtk_tree_row_reference_get_path (tree_view->priv->drag_dest_row);
14385       else
14386         {
14387           if (tree_view->priv->empty_view_drop)
14388             *path = gtk_tree_path_new_from_indices (0, -1);
14389           else
14390             *path = NULL;
14391         }
14392     }
14393
14394   if (pos)
14395     *pos = tree_view->priv->drag_dest_pos;
14396 }
14397
14398 /**
14399  * gtk_tree_view_get_dest_row_at_pos:
14400  * @tree_view: a #GtkTreeView
14401  * @drag_x: the position to determine the destination row for
14402  * @drag_y: the position to determine the destination row for
14403  * @path: (out) (allow-none): Return location for the path of the highlighted row, or %NULL.
14404  * @pos: (out) (allow-none): Return location for the drop position, or %NULL
14405  *
14406  * Determines the destination row for a given position.  @drag_x and
14407  * @drag_y are expected to be in widget coordinates.  This function is only
14408  * meaningful if @tree_view is realized.  Therefore this function will always
14409  * return %FALSE if @tree_view is not realized or does not have a model.
14410  *
14411  * Return value: whether there is a row at the given position, %TRUE if this
14412  * is indeed the case.
14413  **/
14414 gboolean
14415 gtk_tree_view_get_dest_row_at_pos (GtkTreeView             *tree_view,
14416                                    gint                     drag_x,
14417                                    gint                     drag_y,
14418                                    GtkTreePath            **path,
14419                                    GtkTreeViewDropPosition *pos)
14420 {
14421   gint cell_y;
14422   gint bin_x, bin_y;
14423   gdouble offset_into_row;
14424   gdouble third;
14425   GdkRectangle cell;
14426   GtkTreeViewColumn *column = NULL;
14427   GtkTreePath *tmp_path = NULL;
14428
14429   /* Note; this function is exported to allow a custom DND
14430    * implementation, so it can't touch TreeViewDragInfo
14431    */
14432
14433   g_return_val_if_fail (tree_view != NULL, FALSE);
14434   g_return_val_if_fail (drag_x >= 0, FALSE);
14435   g_return_val_if_fail (drag_y >= 0, FALSE);
14436
14437   if (path)
14438     *path = NULL;
14439
14440   if (tree_view->priv->bin_window == NULL)
14441     return FALSE;
14442
14443   if (tree_view->priv->tree == NULL)
14444     return FALSE;
14445
14446   /* If in the top third of a row, we drop before that row; if
14447    * in the bottom third, drop after that row; if in the middle,
14448    * and the row has children, drop into the row.
14449    */
14450   gtk_tree_view_convert_widget_to_bin_window_coords (tree_view, drag_x, drag_y,
14451                                                      &bin_x, &bin_y);
14452
14453   if (!gtk_tree_view_get_path_at_pos (tree_view,
14454                                       bin_x,
14455                                       bin_y,
14456                                       &tmp_path,
14457                                       &column,
14458                                       NULL,
14459                                       &cell_y))
14460     return FALSE;
14461
14462   gtk_tree_view_get_background_area (tree_view, tmp_path, column,
14463                                      &cell);
14464
14465   offset_into_row = cell_y;
14466
14467   if (path)
14468     *path = tmp_path;
14469   else
14470     gtk_tree_path_free (tmp_path);
14471
14472   tmp_path = NULL;
14473
14474   third = cell.height / 3.0;
14475
14476   if (pos)
14477     {
14478       if (offset_into_row < third)
14479         {
14480           *pos = GTK_TREE_VIEW_DROP_BEFORE;
14481         }
14482       else if (offset_into_row < (cell.height / 2.0))
14483         {
14484           *pos = GTK_TREE_VIEW_DROP_INTO_OR_BEFORE;
14485         }
14486       else if (offset_into_row < third * 2.0)
14487         {
14488           *pos = GTK_TREE_VIEW_DROP_INTO_OR_AFTER;
14489         }
14490       else
14491         {
14492           *pos = GTK_TREE_VIEW_DROP_AFTER;
14493         }
14494     }
14495
14496   return TRUE;
14497 }
14498
14499
14500
14501 /* KEEP IN SYNC WITH GTK_TREE_VIEW_BIN_EXPOSE */
14502 /**
14503  * gtk_tree_view_create_row_drag_icon:
14504  * @tree_view: a #GtkTreeView
14505  * @path: a #GtkTreePath in @tree_view
14506  *
14507  * Creates a #cairo_surface_t representation of the row at @path.
14508  * This image is used for a drag icon.
14509  *
14510  * Return value: (transfer full): a newly-allocated surface of the drag icon.
14511  **/
14512 cairo_surface_t *
14513 gtk_tree_view_create_row_drag_icon (GtkTreeView  *tree_view,
14514                                     GtkTreePath  *path)
14515 {
14516   GtkTreeIter   iter;
14517   GtkRBTree    *tree;
14518   GtkRBNode    *node;
14519   GtkStyleContext *context;
14520   gint cell_offset;
14521   GList *list;
14522   GdkRectangle background_area;
14523   GtkWidget *widget;
14524   gint depth;
14525   /* start drawing inside the black outline */
14526   gint x = 1, y = 1;
14527   cairo_surface_t *surface;
14528   gint bin_window_width;
14529   gboolean is_separator = FALSE;
14530   gboolean rtl, allow_rules;
14531   cairo_t *cr;
14532
14533   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), NULL);
14534   g_return_val_if_fail (path != NULL, NULL);
14535
14536   widget = GTK_WIDGET (tree_view);
14537
14538   if (!gtk_widget_get_realized (widget))
14539     return NULL;
14540
14541   depth = gtk_tree_path_get_depth (path);
14542
14543   _gtk_tree_view_find_node (tree_view,
14544                             path,
14545                             &tree,
14546                             &node);
14547
14548   if (tree == NULL)
14549     return NULL;
14550
14551   if (!gtk_tree_model_get_iter (tree_view->priv->model,
14552                                 &iter,
14553                                 path))
14554     return NULL;
14555
14556   context = gtk_widget_get_style_context (widget);
14557
14558   gtk_style_context_save (context);
14559
14560   gtk_style_context_add_class (context, GTK_STYLE_CLASS_VIEW);
14561   gtk_style_context_add_region (context, GTK_STYLE_REGION_COLUMN, 0);
14562
14563   gtk_widget_style_get (widget,
14564                         "allow-rules", &allow_rules,
14565                         NULL);
14566
14567   if (allow_rules && tree_view->priv->has_rules)
14568     {
14569       GtkRegionFlags row_flags;
14570
14571       if ((_gtk_rbtree_node_get_index (tree, node) % 2))
14572         row_flags = GTK_REGION_ODD;
14573       else
14574         row_flags = GTK_REGION_EVEN;
14575
14576       gtk_style_context_add_region (context, GTK_STYLE_REGION_ROW, row_flags);
14577     }
14578
14579   is_separator = row_is_separator (tree_view, &iter, NULL);
14580
14581   cell_offset = x;
14582
14583   background_area.y = y;
14584   background_area.height = gtk_tree_view_get_row_height (tree_view, node);
14585
14586   bin_window_width = gdk_window_get_width (tree_view->priv->bin_window);
14587
14588   surface = gdk_window_create_similar_surface (tree_view->priv->bin_window,
14589                                                CAIRO_CONTENT_COLOR,
14590                                                bin_window_width + 2,
14591                                                background_area.height + 2);
14592
14593   cr = cairo_create (surface);
14594
14595   gtk_render_background (context, cr, 0, 0,
14596                          bin_window_width + 2,
14597                          background_area.height + 2);
14598
14599   rtl = gtk_widget_get_direction (GTK_WIDGET (tree_view)) == GTK_TEXT_DIR_RTL;
14600
14601   for (list = (rtl ? g_list_last (tree_view->priv->columns) : g_list_first (tree_view->priv->columns));
14602       list;
14603       list = (rtl ? list->prev : list->next))
14604     {
14605       GtkTreeViewColumn *column = list->data;
14606       GdkRectangle cell_area;
14607       gint vertical_separator;
14608
14609       if (!gtk_tree_view_column_get_visible (column))
14610         continue;
14611
14612       gtk_tree_view_column_cell_set_cell_data (column, tree_view->priv->model, &iter,
14613                                                GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_PARENT),
14614                                                node->children?TRUE:FALSE);
14615
14616       background_area.x = cell_offset;
14617       background_area.width = gtk_tree_view_column_get_width (column);
14618
14619       gtk_widget_style_get (widget,
14620                             "vertical-separator", &vertical_separator,
14621                             NULL);
14622
14623       cell_area = background_area;
14624
14625       cell_area.y += vertical_separator / 2;
14626       cell_area.height -= vertical_separator;
14627
14628       if (gtk_tree_view_is_expander_column (tree_view, column))
14629         {
14630           if (!rtl)
14631             cell_area.x += (depth - 1) * tree_view->priv->level_indentation;
14632           cell_area.width -= (depth - 1) * tree_view->priv->level_indentation;
14633
14634           if (gtk_tree_view_draw_expanders (tree_view))
14635             {
14636               if (!rtl)
14637                 cell_area.x += depth * tree_view->priv->expander_size;
14638               cell_area.width -= depth * tree_view->priv->expander_size;
14639             }
14640         }
14641
14642       if (gtk_tree_view_column_cell_is_visible (column))
14643         {
14644           if (is_separator)
14645             {
14646               gtk_style_context_save (context);
14647               gtk_style_context_add_class (context, GTK_STYLE_CLASS_SEPARATOR);
14648
14649               gtk_render_line (context, cr,
14650                                cell_area.x,
14651                                cell_area.y + cell_area.height / 2,
14652                                cell_area.x + cell_area.width,
14653                                cell_area.y + cell_area.height / 2);
14654
14655               gtk_style_context_restore (context);
14656             }
14657           else
14658             {
14659               _gtk_tree_view_column_cell_render (column,
14660                                                  cr,
14661                                                  &background_area,
14662                                                  &cell_area,
14663                                                  0, FALSE);
14664             }
14665         }
14666       cell_offset += gtk_tree_view_column_get_width (column);
14667     }
14668
14669   cairo_set_source_rgb (cr, 0, 0, 0);
14670   cairo_rectangle (cr,
14671                    0.5, 0.5,
14672                    bin_window_width + 1,
14673                    background_area.height + 1);
14674   cairo_set_line_width (cr, 1.0);
14675   cairo_stroke (cr);
14676
14677   cairo_destroy (cr);
14678
14679   cairo_surface_set_device_offset (surface, 2, 2);
14680
14681   gtk_style_context_restore (context);
14682
14683   return surface;
14684 }
14685
14686
14687 /**
14688  * gtk_tree_view_set_destroy_count_func:
14689  * @tree_view: A #GtkTreeView
14690  * @func: (allow-none): Function to be called when a view row is destroyed, or %NULL
14691  * @data: (allow-none): User data to be passed to @func, or %NULL
14692  * @destroy: (allow-none): Destroy notifier for @data, or %NULL
14693  *
14694  * This function should almost never be used.  It is meant for private use by
14695  * ATK for determining the number of visible children that are removed when the
14696  * user collapses a row, or a row is deleted.
14697  *
14698  * Deprecated: 3.4: Accessibility does not need the function anymore.
14699  **/
14700 void
14701 gtk_tree_view_set_destroy_count_func (GtkTreeView             *tree_view,
14702                                       GtkTreeDestroyCountFunc  func,
14703                                       gpointer                 data,
14704                                       GDestroyNotify           destroy)
14705 {
14706   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
14707
14708   if (tree_view->priv->destroy_count_destroy)
14709     tree_view->priv->destroy_count_destroy (tree_view->priv->destroy_count_data);
14710
14711   tree_view->priv->destroy_count_func = func;
14712   tree_view->priv->destroy_count_data = data;
14713   tree_view->priv->destroy_count_destroy = destroy;
14714 }
14715
14716
14717 /*
14718  * Interactive search
14719  */
14720
14721 /**
14722  * gtk_tree_view_set_enable_search:
14723  * @tree_view: A #GtkTreeView
14724  * @enable_search: %TRUE, if the user can search interactively
14725  *
14726  * If @enable_search is set, then the user can type in text to search through
14727  * the tree interactively (this is sometimes called "typeahead find").
14728  *
14729  * Note that even if this is %FALSE, the user can still initiate a search
14730  * using the "start-interactive-search" key binding.
14731  */
14732 void
14733 gtk_tree_view_set_enable_search (GtkTreeView *tree_view,
14734                                  gboolean     enable_search)
14735 {
14736   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
14737
14738   enable_search = !!enable_search;
14739
14740   if (tree_view->priv->enable_search != enable_search)
14741     {
14742        tree_view->priv->enable_search = enable_search;
14743        g_object_notify (G_OBJECT (tree_view), "enable-search");
14744     }
14745 }
14746
14747 /**
14748  * gtk_tree_view_get_enable_search:
14749  * @tree_view: A #GtkTreeView
14750  *
14751  * Returns whether or not the tree allows to start interactive searching
14752  * by typing in text.
14753  *
14754  * Return value: whether or not to let the user search interactively
14755  */
14756 gboolean
14757 gtk_tree_view_get_enable_search (GtkTreeView *tree_view)
14758 {
14759   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), FALSE);
14760
14761   return tree_view->priv->enable_search;
14762 }
14763
14764
14765 /**
14766  * gtk_tree_view_get_search_column:
14767  * @tree_view: A #GtkTreeView
14768  *
14769  * Gets the column searched on by the interactive search code.
14770  *
14771  * Return value: the column the interactive search code searches in.
14772  */
14773 gint
14774 gtk_tree_view_get_search_column (GtkTreeView *tree_view)
14775 {
14776   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), -1);
14777
14778   return (tree_view->priv->search_column);
14779 }
14780
14781 /**
14782  * gtk_tree_view_set_search_column:
14783  * @tree_view: A #GtkTreeView
14784  * @column: the column of the model to search in, or -1 to disable searching
14785  *
14786  * Sets @column as the column where the interactive search code should
14787  * search in for the current model.
14788  *
14789  * If the search column is set, users can use the "start-interactive-search"
14790  * key binding to bring up search popup. The enable-search property controls
14791  * whether simply typing text will also start an interactive search.
14792  *
14793  * Note that @column refers to a column of the current model. The search
14794  * column is reset to -1 when the model is changed.
14795  */
14796 void
14797 gtk_tree_view_set_search_column (GtkTreeView *tree_view,
14798                                  gint         column)
14799 {
14800   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
14801   g_return_if_fail (column >= -1);
14802
14803   if (tree_view->priv->search_column == column)
14804     return;
14805
14806   tree_view->priv->search_column = column;
14807   g_object_notify (G_OBJECT (tree_view), "search-column");
14808 }
14809
14810 /**
14811  * gtk_tree_view_get_search_equal_func: (skip)
14812  * @tree_view: A #GtkTreeView
14813  *
14814  * Returns the compare function currently in use.
14815  *
14816  * Return value: the currently used compare function for the search code.
14817  */
14818
14819 GtkTreeViewSearchEqualFunc
14820 gtk_tree_view_get_search_equal_func (GtkTreeView *tree_view)
14821 {
14822   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), NULL);
14823
14824   return tree_view->priv->search_equal_func;
14825 }
14826
14827 /**
14828  * gtk_tree_view_set_search_equal_func:
14829  * @tree_view: A #GtkTreeView
14830  * @search_equal_func: the compare function to use during the search
14831  * @search_user_data: (allow-none): user data to pass to @search_equal_func, or %NULL
14832  * @search_destroy: (allow-none): Destroy notifier for @search_user_data, or %NULL
14833  *
14834  * Sets the compare function for the interactive search capabilities; note
14835  * that somewhat like strcmp() returning 0 for equality
14836  * #GtkTreeViewSearchEqualFunc returns %FALSE on matches.
14837  **/
14838 void
14839 gtk_tree_view_set_search_equal_func (GtkTreeView                *tree_view,
14840                                      GtkTreeViewSearchEqualFunc  search_equal_func,
14841                                      gpointer                    search_user_data,
14842                                      GDestroyNotify              search_destroy)
14843 {
14844   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
14845   g_return_if_fail (search_equal_func != NULL);
14846
14847   if (tree_view->priv->search_destroy)
14848     tree_view->priv->search_destroy (tree_view->priv->search_user_data);
14849
14850   tree_view->priv->search_equal_func = search_equal_func;
14851   tree_view->priv->search_user_data = search_user_data;
14852   tree_view->priv->search_destroy = search_destroy;
14853   if (tree_view->priv->search_equal_func == NULL)
14854     tree_view->priv->search_equal_func = gtk_tree_view_search_equal_func;
14855 }
14856
14857 /**
14858  * gtk_tree_view_get_search_entry:
14859  * @tree_view: A #GtkTreeView
14860  *
14861  * Returns the #GtkEntry which is currently in use as interactive search
14862  * entry for @tree_view.  In case the built-in entry is being used, %NULL
14863  * will be returned.
14864  *
14865  * Return value: (transfer none): the entry currently in use as search entry.
14866  *
14867  * Since: 2.10
14868  */
14869 GtkEntry *
14870 gtk_tree_view_get_search_entry (GtkTreeView *tree_view)
14871 {
14872   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), NULL);
14873
14874   if (tree_view->priv->search_custom_entry_set)
14875     return GTK_ENTRY (tree_view->priv->search_entry);
14876
14877   return NULL;
14878 }
14879
14880 /**
14881  * gtk_tree_view_set_search_entry:
14882  * @tree_view: A #GtkTreeView
14883  * @entry: (allow-none): the entry the interactive search code of @tree_view should use or %NULL
14884  *
14885  * Sets the entry which the interactive search code will use for this
14886  * @tree_view.  This is useful when you want to provide a search entry
14887  * in our interface at all time at a fixed position.  Passing %NULL for
14888  * @entry will make the interactive search code use the built-in popup
14889  * entry again.
14890  *
14891  * Since: 2.10
14892  */
14893 void
14894 gtk_tree_view_set_search_entry (GtkTreeView *tree_view,
14895                                 GtkEntry    *entry)
14896 {
14897   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
14898   g_return_if_fail (entry == NULL || GTK_IS_ENTRY (entry));
14899
14900   if (tree_view->priv->search_custom_entry_set)
14901     {
14902       if (tree_view->priv->search_entry_changed_id)
14903         {
14904           g_signal_handler_disconnect (tree_view->priv->search_entry,
14905                                        tree_view->priv->search_entry_changed_id);
14906           tree_view->priv->search_entry_changed_id = 0;
14907         }
14908       g_signal_handlers_disconnect_by_func (tree_view->priv->search_entry,
14909                                             G_CALLBACK (gtk_tree_view_search_key_press_event),
14910                                             tree_view);
14911
14912       g_object_unref (tree_view->priv->search_entry);
14913     }
14914   else if (tree_view->priv->search_window)
14915     {
14916       gtk_widget_destroy (tree_view->priv->search_window);
14917
14918       tree_view->priv->search_window = NULL;
14919     }
14920
14921   if (entry)
14922     {
14923       tree_view->priv->search_entry = g_object_ref (entry);
14924       tree_view->priv->search_custom_entry_set = TRUE;
14925
14926       if (tree_view->priv->search_entry_changed_id == 0)
14927         {
14928           tree_view->priv->search_entry_changed_id =
14929             g_signal_connect (tree_view->priv->search_entry, "changed",
14930                               G_CALLBACK (gtk_tree_view_search_init),
14931                               tree_view);
14932         }
14933
14934         g_signal_connect (tree_view->priv->search_entry, "key-press-event",
14935                           G_CALLBACK (gtk_tree_view_search_key_press_event),
14936                           tree_view);
14937
14938         gtk_tree_view_search_init (tree_view->priv->search_entry, tree_view);
14939     }
14940   else
14941     {
14942       tree_view->priv->search_entry = NULL;
14943       tree_view->priv->search_custom_entry_set = FALSE;
14944     }
14945 }
14946
14947 /**
14948  * gtk_tree_view_set_search_position_func:
14949  * @tree_view: A #GtkTreeView
14950  * @func: (allow-none): the function to use to position the search dialog, or %NULL
14951  *    to use the default search position function
14952  * @data: (allow-none): user data to pass to @func, or %NULL
14953  * @destroy: (allow-none): Destroy notifier for @data, or %NULL
14954  *
14955  * Sets the function to use when positioning the search dialog.
14956  *
14957  * Since: 2.10
14958  **/
14959 void
14960 gtk_tree_view_set_search_position_func (GtkTreeView                   *tree_view,
14961                                         GtkTreeViewSearchPositionFunc  func,
14962                                         gpointer                       user_data,
14963                                         GDestroyNotify                 destroy)
14964 {
14965   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
14966
14967   if (tree_view->priv->search_position_destroy)
14968     tree_view->priv->search_position_destroy (tree_view->priv->search_position_user_data);
14969
14970   tree_view->priv->search_position_func = func;
14971   tree_view->priv->search_position_user_data = user_data;
14972   tree_view->priv->search_position_destroy = destroy;
14973   if (tree_view->priv->search_position_func == NULL)
14974     tree_view->priv->search_position_func = gtk_tree_view_search_position_func;
14975 }
14976
14977 /**
14978  * gtk_tree_view_get_search_position_func: (skip)
14979  * @tree_view: A #GtkTreeView
14980  *
14981  * Returns the positioning function currently in use.
14982  *
14983  * Return value: the currently used function for positioning the search dialog.
14984  *
14985  * Since: 2.10
14986  */
14987 GtkTreeViewSearchPositionFunc
14988 gtk_tree_view_get_search_position_func (GtkTreeView *tree_view)
14989 {
14990   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), NULL);
14991
14992   return tree_view->priv->search_position_func;
14993 }
14994
14995
14996 static void
14997 gtk_tree_view_search_dialog_hide (GtkWidget   *search_dialog,
14998                                   GtkTreeView *tree_view,
14999                                   GdkDevice   *device)
15000 {
15001   if (tree_view->priv->disable_popdown)
15002     return;
15003
15004   if (tree_view->priv->search_entry_changed_id)
15005     {
15006       g_signal_handler_disconnect (tree_view->priv->search_entry,
15007                                    tree_view->priv->search_entry_changed_id);
15008       tree_view->priv->search_entry_changed_id = 0;
15009     }
15010   if (tree_view->priv->typeselect_flush_timeout)
15011     {
15012       g_source_remove (tree_view->priv->typeselect_flush_timeout);
15013       tree_view->priv->typeselect_flush_timeout = 0;
15014     }
15015
15016   if (gtk_widget_get_visible (search_dialog))
15017     {
15018       /* send focus-in event */
15019       send_focus_change (GTK_WIDGET (tree_view->priv->search_entry), device, FALSE);
15020       gtk_widget_hide (search_dialog);
15021       gtk_entry_set_text (GTK_ENTRY (tree_view->priv->search_entry), "");
15022       send_focus_change (GTK_WIDGET (tree_view), device, TRUE);
15023     }
15024 }
15025
15026 static void
15027 gtk_tree_view_search_position_func (GtkTreeView *tree_view,
15028                                     GtkWidget   *search_dialog,
15029                                     gpointer     user_data)
15030 {
15031   gint x, y;
15032   gint tree_x, tree_y;
15033   gint tree_width, tree_height;
15034   GdkWindow *tree_window = gtk_widget_get_window (GTK_WIDGET (tree_view));
15035   GdkScreen *screen = gdk_window_get_screen (tree_window);
15036   GtkRequisition requisition;
15037   gint monitor_num;
15038   GdkRectangle monitor;
15039
15040   monitor_num = gdk_screen_get_monitor_at_window (screen, tree_window);
15041   gdk_screen_get_monitor_workarea (screen, monitor_num, &monitor);
15042
15043   gtk_widget_realize (search_dialog);
15044
15045   gdk_window_get_origin (tree_window, &tree_x, &tree_y);
15046   tree_width = gdk_window_get_width (tree_window);
15047   tree_height = gdk_window_get_height (tree_window);
15048   gtk_widget_get_preferred_size (search_dialog, &requisition, NULL);
15049
15050   if (tree_x + tree_width > gdk_screen_get_width (screen))
15051     x = gdk_screen_get_width (screen) - requisition.width;
15052   else if (tree_x + tree_width - requisition.width < 0)
15053     x = 0;
15054   else
15055     x = tree_x + tree_width - requisition.width;
15056
15057   if (tree_y + tree_height + requisition.height > gdk_screen_get_height (screen))
15058     y = gdk_screen_get_height (screen) - requisition.height;
15059   else if (tree_y + tree_height < 0) /* isn't really possible ... */
15060     y = 0;
15061   else
15062     y = tree_y + tree_height;
15063
15064   gtk_window_move (GTK_WINDOW (search_dialog), x, y);
15065 }
15066
15067 static void
15068 gtk_tree_view_search_disable_popdown (GtkEntry *entry,
15069                                       GtkMenu  *menu,
15070                                       gpointer  data)
15071 {
15072   GtkTreeView *tree_view = (GtkTreeView *)data;
15073
15074   tree_view->priv->disable_popdown = 1;
15075   g_signal_connect (menu, "hide",
15076                     G_CALLBACK (gtk_tree_view_search_enable_popdown), data);
15077 }
15078
15079 /* Because we're visible but offscreen, we just set a flag in the preedit
15080  * callback.
15081  */
15082 static void
15083 gtk_tree_view_search_preedit_changed (GtkIMContext *im_context,
15084                                       GtkTreeView  *tree_view)
15085 {
15086   tree_view->priv->imcontext_changed = 1;
15087   if (tree_view->priv->typeselect_flush_timeout)
15088     {
15089       g_source_remove (tree_view->priv->typeselect_flush_timeout);
15090       tree_view->priv->typeselect_flush_timeout =
15091         gdk_threads_add_timeout (GTK_TREE_VIEW_SEARCH_DIALOG_TIMEOUT,
15092                        (GSourceFunc) gtk_tree_view_search_entry_flush_timeout,
15093                        tree_view);
15094     }
15095
15096 }
15097
15098 static void
15099 gtk_tree_view_search_activate (GtkEntry    *entry,
15100                                GtkTreeView *tree_view)
15101 {
15102   GtkTreePath *path;
15103
15104   gtk_tree_view_search_dialog_hide (tree_view->priv->search_window,
15105                                     tree_view,
15106                                     gtk_get_current_event_device ());
15107
15108   /* If we have a row selected and it's the cursor row, we activate
15109    * the row XXX */
15110   if (tree_view->priv->cursor_node &&
15111       GTK_RBNODE_FLAG_SET (tree_view->priv->cursor_node, GTK_RBNODE_IS_SELECTED))
15112     {
15113       path = _gtk_tree_path_new_from_rbtree (tree_view->priv->cursor_tree,
15114                                              tree_view->priv->cursor_node);
15115
15116       gtk_tree_view_row_activated (tree_view, path, tree_view->priv->focus_column);
15117
15118       gtk_tree_path_free (path);
15119     }
15120 }
15121
15122 static gboolean
15123 gtk_tree_view_real_search_enable_popdown (gpointer data)
15124 {
15125   GtkTreeView *tree_view = (GtkTreeView *)data;
15126
15127   tree_view->priv->disable_popdown = 0;
15128
15129   return FALSE;
15130 }
15131
15132 static void
15133 gtk_tree_view_search_enable_popdown (GtkWidget *widget,
15134                                      gpointer   data)
15135 {
15136   gdk_threads_add_timeout_full (G_PRIORITY_HIGH, 200, gtk_tree_view_real_search_enable_popdown, g_object_ref (data), g_object_unref);
15137 }
15138
15139 static gboolean
15140 gtk_tree_view_search_delete_event (GtkWidget *widget,
15141                                    GdkEventAny *event,
15142                                    GtkTreeView *tree_view)
15143 {
15144   g_return_val_if_fail (GTK_IS_WIDGET (widget), FALSE);
15145
15146   gtk_tree_view_search_dialog_hide (widget, tree_view, NULL);
15147
15148   return TRUE;
15149 }
15150
15151 static gboolean
15152 gtk_tree_view_search_button_press_event (GtkWidget *widget,
15153                                          GdkEventButton *event,
15154                                          GtkTreeView *tree_view)
15155 {
15156   GdkDevice *keyb_device;
15157
15158   g_return_val_if_fail (GTK_IS_WIDGET (widget), FALSE);
15159
15160   keyb_device = gdk_device_get_associated_device (event->device);
15161   gtk_tree_view_search_dialog_hide (widget, tree_view, keyb_device);
15162
15163   if (event->window == tree_view->priv->bin_window)
15164     gtk_tree_view_button_press (GTK_WIDGET (tree_view), event);
15165
15166   return TRUE;
15167 }
15168
15169 static gboolean
15170 gtk_tree_view_search_scroll_event (GtkWidget *widget,
15171                                    GdkEventScroll *event,
15172                                    GtkTreeView *tree_view)
15173 {
15174   gboolean retval = FALSE;
15175
15176   if (event->direction == GDK_SCROLL_UP)
15177     {
15178       gtk_tree_view_search_move (widget, tree_view, TRUE);
15179       retval = TRUE;
15180     }
15181   else if (event->direction == GDK_SCROLL_DOWN)
15182     {
15183       gtk_tree_view_search_move (widget, tree_view, FALSE);
15184       retval = TRUE;
15185     }
15186
15187   /* renew the flush timeout */
15188   if (retval && tree_view->priv->typeselect_flush_timeout
15189       && !tree_view->priv->search_custom_entry_set)
15190     {
15191       g_source_remove (tree_view->priv->typeselect_flush_timeout);
15192       tree_view->priv->typeselect_flush_timeout =
15193         gdk_threads_add_timeout (GTK_TREE_VIEW_SEARCH_DIALOG_TIMEOUT,
15194                        (GSourceFunc) gtk_tree_view_search_entry_flush_timeout,
15195                        tree_view);
15196     }
15197
15198   return retval;
15199 }
15200
15201 static gboolean
15202 gtk_tree_view_search_key_press_event (GtkWidget *widget,
15203                                       GdkEventKey *event,
15204                                       GtkTreeView *tree_view)
15205 {
15206   GdkModifierType default_accel;
15207   gboolean        retval = FALSE;
15208
15209   g_return_val_if_fail (GTK_IS_WIDGET (widget), FALSE);
15210   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), FALSE);
15211
15212   /* close window and cancel the search */
15213   if (!tree_view->priv->search_custom_entry_set
15214       && (event->keyval == GDK_KEY_Escape ||
15215           event->keyval == GDK_KEY_Tab ||
15216             event->keyval == GDK_KEY_KP_Tab ||
15217             event->keyval == GDK_KEY_ISO_Left_Tab))
15218     {
15219       gtk_tree_view_search_dialog_hide (widget, tree_view,
15220                                         gdk_event_get_device ((GdkEvent *) event));
15221       return TRUE;
15222     }
15223
15224   default_accel = gtk_widget_get_modifier_mask (widget,
15225                                                 GDK_MODIFIER_INTENT_PRIMARY_ACCELERATOR);
15226
15227   /* select previous matching iter */
15228   if (event->keyval == GDK_KEY_Up || event->keyval == GDK_KEY_KP_Up)
15229     {
15230       if (!gtk_tree_view_search_move (widget, tree_view, TRUE))
15231         gtk_widget_error_bell (widget);
15232
15233       retval = TRUE;
15234     }
15235
15236   if (((event->state & (default_accel | GDK_SHIFT_MASK)) == (default_accel | GDK_SHIFT_MASK))
15237       && (event->keyval == GDK_KEY_g || event->keyval == GDK_KEY_G))
15238     {
15239       if (!gtk_tree_view_search_move (widget, tree_view, TRUE))
15240         gtk_widget_error_bell (widget);
15241
15242       retval = TRUE;
15243     }
15244
15245   /* select next matching iter */
15246   if (event->keyval == GDK_KEY_Down || event->keyval == GDK_KEY_KP_Down)
15247     {
15248       if (!gtk_tree_view_search_move (widget, tree_view, FALSE))
15249         gtk_widget_error_bell (widget);
15250
15251       retval = TRUE;
15252     }
15253
15254   if (((event->state & (default_accel | GDK_SHIFT_MASK)) == default_accel)
15255       && (event->keyval == GDK_KEY_g || event->keyval == GDK_KEY_G))
15256     {
15257       if (!gtk_tree_view_search_move (widget, tree_view, FALSE))
15258         gtk_widget_error_bell (widget);
15259
15260       retval = TRUE;
15261     }
15262
15263   /* renew the flush timeout */
15264   if (retval && tree_view->priv->typeselect_flush_timeout
15265       && !tree_view->priv->search_custom_entry_set)
15266     {
15267       g_source_remove (tree_view->priv->typeselect_flush_timeout);
15268       tree_view->priv->typeselect_flush_timeout =
15269         gdk_threads_add_timeout (GTK_TREE_VIEW_SEARCH_DIALOG_TIMEOUT,
15270                        (GSourceFunc) gtk_tree_view_search_entry_flush_timeout,
15271                        tree_view);
15272     }
15273
15274   return retval;
15275 }
15276
15277 /*  this function returns FALSE if there is a search string but
15278  *  nothing was found, and TRUE otherwise.
15279  */
15280 static gboolean
15281 gtk_tree_view_search_move (GtkWidget   *window,
15282                            GtkTreeView *tree_view,
15283                            gboolean     up)
15284 {
15285   gboolean ret;
15286   gint len;
15287   gint count = 0;
15288   const gchar *text;
15289   GtkTreeIter iter;
15290   GtkTreeModel *model;
15291   GtkTreeSelection *selection;
15292
15293   text = gtk_entry_get_text (GTK_ENTRY (tree_view->priv->search_entry));
15294
15295   g_return_val_if_fail (text != NULL, FALSE);
15296
15297   len = strlen (text);
15298
15299   if (up && tree_view->priv->selected_iter == 1)
15300     return strlen (text) < 1;
15301
15302   len = strlen (text);
15303
15304   if (len < 1)
15305     return TRUE;
15306
15307   model = gtk_tree_view_get_model (tree_view);
15308   selection = gtk_tree_view_get_selection (tree_view);
15309
15310   /* search */
15311   gtk_tree_selection_unselect_all (selection);
15312   if (!gtk_tree_model_get_iter_first (model, &iter))
15313     return TRUE;
15314
15315   ret = gtk_tree_view_search_iter (model, selection, &iter, text,
15316                                    &count, up?((tree_view->priv->selected_iter) - 1):((tree_view->priv->selected_iter + 1)));
15317
15318   if (ret)
15319     {
15320       /* found */
15321       tree_view->priv->selected_iter += up?(-1):(1);
15322       return TRUE;
15323     }
15324   else
15325     {
15326       /* return to old iter */
15327       count = 0;
15328       gtk_tree_model_get_iter_first (model, &iter);
15329       gtk_tree_view_search_iter (model, selection,
15330                                  &iter, text,
15331                                  &count, tree_view->priv->selected_iter);
15332       return FALSE;
15333     }
15334 }
15335
15336 static gboolean
15337 gtk_tree_view_search_equal_func (GtkTreeModel *model,
15338                                  gint          column,
15339                                  const gchar  *key,
15340                                  GtkTreeIter  *iter,
15341                                  gpointer      search_data)
15342 {
15343   gboolean retval = TRUE;
15344   const gchar *str;
15345   gchar *normalized_string;
15346   gchar *normalized_key;
15347   gchar *case_normalized_string = NULL;
15348   gchar *case_normalized_key = NULL;
15349   GValue value = G_VALUE_INIT;
15350   GValue transformed = G_VALUE_INIT;
15351
15352   gtk_tree_model_get_value (model, iter, column, &value);
15353
15354   g_value_init (&transformed, G_TYPE_STRING);
15355
15356   if (!g_value_transform (&value, &transformed))
15357     {
15358       g_value_unset (&value);
15359       return TRUE;
15360     }
15361
15362   g_value_unset (&value);
15363
15364   str = g_value_get_string (&transformed);
15365   if (!str)
15366     {
15367       g_value_unset (&transformed);
15368       return TRUE;
15369     }
15370
15371   normalized_string = g_utf8_normalize (str, -1, G_NORMALIZE_ALL);
15372   normalized_key = g_utf8_normalize (key, -1, G_NORMALIZE_ALL);
15373
15374   if (normalized_string && normalized_key)
15375     {
15376       case_normalized_string = g_utf8_casefold (normalized_string, -1);
15377       case_normalized_key = g_utf8_casefold (normalized_key, -1);
15378
15379       if (strncmp (case_normalized_key, case_normalized_string, strlen (case_normalized_key)) == 0)
15380         retval = FALSE;
15381     }
15382
15383   g_value_unset (&transformed);
15384   g_free (normalized_key);
15385   g_free (normalized_string);
15386   g_free (case_normalized_key);
15387   g_free (case_normalized_string);
15388
15389   return retval;
15390 }
15391
15392 static gboolean
15393 gtk_tree_view_search_iter (GtkTreeModel     *model,
15394                            GtkTreeSelection *selection,
15395                            GtkTreeIter      *iter,
15396                            const gchar      *text,
15397                            gint             *count,
15398                            gint              n)
15399 {
15400   GtkRBTree *tree = NULL;
15401   GtkRBNode *node = NULL;
15402   GtkTreePath *path;
15403
15404   GtkTreeView *tree_view = gtk_tree_selection_get_tree_view (selection);
15405
15406   path = gtk_tree_model_get_path (model, iter);
15407   _gtk_tree_view_find_node (tree_view, path, &tree, &node);
15408
15409   do
15410     {
15411       if (! tree_view->priv->search_equal_func (model, tree_view->priv->search_column, text, iter, tree_view->priv->search_user_data))
15412         {
15413           (*count)++;
15414           if (*count == n)
15415             {
15416               gtk_tree_view_scroll_to_cell (tree_view, path, NULL,
15417                                             TRUE, 0.5, 0.0);
15418               gtk_tree_selection_select_iter (selection, iter);
15419               gtk_tree_view_real_set_cursor (tree_view, path, CLAMP_NODE);
15420
15421               if (path)
15422                 gtk_tree_path_free (path);
15423
15424               return TRUE;
15425             }
15426         }
15427
15428       if (node->children)
15429         {
15430           gboolean has_child;
15431           GtkTreeIter tmp;
15432
15433           tree = node->children;
15434           node = _gtk_rbtree_first (tree);
15435
15436           tmp = *iter;
15437           has_child = gtk_tree_model_iter_children (model, iter, &tmp);
15438           gtk_tree_path_down (path);
15439
15440           /* sanity check */
15441           TREE_VIEW_INTERNAL_ASSERT (has_child, FALSE);
15442         }
15443       else
15444         {
15445           gboolean done = FALSE;
15446
15447           do
15448             {
15449               node = _gtk_rbtree_next (tree, node);
15450
15451               if (node)
15452                 {
15453                   gboolean has_next;
15454
15455                   has_next = gtk_tree_model_iter_next (model, iter);
15456
15457                   done = TRUE;
15458                   gtk_tree_path_next (path);
15459
15460                   /* sanity check */
15461                   TREE_VIEW_INTERNAL_ASSERT (has_next, FALSE);
15462                 }
15463               else
15464                 {
15465                   gboolean has_parent;
15466                   GtkTreeIter tmp_iter = *iter;
15467
15468                   node = tree->parent_node;
15469                   tree = tree->parent_tree;
15470
15471                   if (!tree)
15472                     {
15473                       if (path)
15474                         gtk_tree_path_free (path);
15475
15476                       /* we've run out of tree, done with this func */
15477                       return FALSE;
15478                     }
15479
15480                   has_parent = gtk_tree_model_iter_parent (model,
15481                                                            iter,
15482                                                            &tmp_iter);
15483                   gtk_tree_path_up (path);
15484
15485                   /* sanity check */
15486                   TREE_VIEW_INTERNAL_ASSERT (has_parent, FALSE);
15487                 }
15488             }
15489           while (!done);
15490         }
15491     }
15492   while (1);
15493
15494   return FALSE;
15495 }
15496
15497 static void
15498 gtk_tree_view_search_init (GtkWidget   *entry,
15499                            GtkTreeView *tree_view)
15500 {
15501   gint ret;
15502   gint count = 0;
15503   const gchar *text;
15504   GtkTreeIter iter;
15505   GtkTreeModel *model;
15506   GtkTreeSelection *selection;
15507
15508   g_return_if_fail (GTK_IS_ENTRY (entry));
15509   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
15510
15511   text = gtk_entry_get_text (GTK_ENTRY (entry));
15512
15513   model = gtk_tree_view_get_model (tree_view);
15514   selection = gtk_tree_view_get_selection (tree_view);
15515
15516   /* search */
15517   gtk_tree_selection_unselect_all (selection);
15518   if (tree_view->priv->typeselect_flush_timeout
15519       && !tree_view->priv->search_custom_entry_set)
15520     {
15521       g_source_remove (tree_view->priv->typeselect_flush_timeout);
15522       tree_view->priv->typeselect_flush_timeout =
15523         gdk_threads_add_timeout (GTK_TREE_VIEW_SEARCH_DIALOG_TIMEOUT,
15524                        (GSourceFunc) gtk_tree_view_search_entry_flush_timeout,
15525                        tree_view);
15526     }
15527
15528   if (*text == '\0')
15529     return;
15530
15531   if (!gtk_tree_model_get_iter_first (model, &iter))
15532     return;
15533
15534   ret = gtk_tree_view_search_iter (model, selection,
15535                                    &iter, text,
15536                                    &count, 1);
15537
15538   if (ret)
15539     tree_view->priv->selected_iter = 1;
15540 }
15541
15542 void
15543 _gtk_tree_view_remove_editable (GtkTreeView       *tree_view,
15544                                 GtkTreeViewColumn *column,
15545                                 GtkCellEditable   *cell_editable)
15546 {
15547   if (tree_view->priv->edited_column == NULL)
15548     return;
15549
15550   g_return_if_fail (column == tree_view->priv->edited_column);
15551
15552   tree_view->priv->edited_column = NULL;
15553
15554   if (gtk_widget_has_focus (GTK_WIDGET (cell_editable)))
15555     gtk_widget_grab_focus (GTK_WIDGET (tree_view));
15556
15557   gtk_container_remove (GTK_CONTAINER (tree_view),
15558                         GTK_WIDGET (cell_editable));
15559
15560   /* FIXME should only redraw a single node */
15561   gtk_widget_queue_draw (GTK_WIDGET (tree_view));
15562 }
15563
15564 static gboolean
15565 gtk_tree_view_start_editing (GtkTreeView *tree_view,
15566                              GtkTreePath *cursor_path,
15567                              gboolean     edit_only)
15568 {
15569   GtkTreeIter iter;
15570   GdkRectangle cell_area;
15571   GtkTreeViewColumn *focus_column;
15572   guint flags = 0; /* can be 0, as the flags are primarily for rendering */
15573   gint retval = FALSE;
15574   GtkRBTree *cursor_tree;
15575   GtkRBNode *cursor_node;
15576
15577   g_assert (tree_view->priv->focus_column);
15578   focus_column = tree_view->priv->focus_column;
15579
15580   if (!gtk_widget_get_realized (GTK_WIDGET (tree_view)))
15581     return FALSE;
15582
15583   if (_gtk_tree_view_find_node (tree_view, cursor_path, &cursor_tree, &cursor_node) ||
15584       cursor_node == NULL)
15585     return FALSE;
15586
15587   gtk_tree_model_get_iter (tree_view->priv->model, &iter, cursor_path);
15588
15589   validate_row (tree_view, cursor_tree, cursor_node, &iter, cursor_path);
15590
15591   gtk_tree_view_column_cell_set_cell_data (focus_column,
15592                                            tree_view->priv->model,
15593                                            &iter,
15594                                            GTK_RBNODE_FLAG_SET (cursor_node, GTK_RBNODE_IS_PARENT),
15595                                            cursor_node->children ? TRUE : FALSE);
15596   gtk_tree_view_get_cell_area (tree_view,
15597                                cursor_path,
15598                                focus_column,
15599                                &cell_area);
15600
15601   if (gtk_cell_area_activate (gtk_cell_layout_get_area (GTK_CELL_LAYOUT (focus_column)),
15602                               _gtk_tree_view_column_get_context (focus_column),
15603                               GTK_WIDGET (tree_view),
15604                               &cell_area,
15605                               flags, edit_only))
15606     retval = TRUE;
15607
15608   return retval;
15609 }
15610
15611 void
15612 _gtk_tree_view_add_editable (GtkTreeView       *tree_view,
15613                              GtkTreeViewColumn *column,
15614                              GtkTreePath       *path,
15615                              GtkCellEditable   *cell_editable,
15616                              GdkRectangle      *cell_area)
15617 {
15618   gint pre_val = gtk_adjustment_get_value (tree_view->priv->vadjustment);
15619   GtkRequisition requisition;
15620
15621   tree_view->priv->edited_column = column;
15622
15623   gtk_tree_view_real_set_cursor (tree_view, path, CLAMP_NODE);
15624   cell_area->y += pre_val - (int)gtk_adjustment_get_value (tree_view->priv->vadjustment);
15625
15626   gtk_widget_get_preferred_size (GTK_WIDGET (cell_editable),
15627                                  &requisition, NULL);
15628
15629   tree_view->priv->draw_keyfocus = TRUE;
15630
15631   if (requisition.height < cell_area->height)
15632     {
15633       gint diff = cell_area->height - requisition.height;
15634       gtk_tree_view_put (tree_view,
15635                          GTK_WIDGET (cell_editable),
15636                          cell_area->x, cell_area->y + diff/2,
15637                          cell_area->width, requisition.height);
15638     }
15639   else
15640     {
15641       gtk_tree_view_put (tree_view,
15642                          GTK_WIDGET (cell_editable),
15643                          cell_area->x, cell_area->y,
15644                          cell_area->width, cell_area->height);
15645     }
15646 }
15647
15648 static void
15649 gtk_tree_view_stop_editing (GtkTreeView *tree_view,
15650                             gboolean     cancel_editing)
15651 {
15652   GtkTreeViewColumn *column;
15653
15654   if (tree_view->priv->edited_column == NULL)
15655     return;
15656
15657   /*
15658    * This is very evil. We need to do this, because
15659    * gtk_cell_editable_editing_done may trigger gtk_tree_view_row_changed
15660    * later on. If gtk_tree_view_row_changed notices
15661    * tree_view->priv->edited_column != NULL, it'll call
15662    * gtk_tree_view_stop_editing again. Bad things will happen then.
15663    *
15664    * Please read that again if you intend to modify anything here.
15665    */
15666
15667   column = tree_view->priv->edited_column;
15668   gtk_cell_area_stop_editing (gtk_cell_layout_get_area (GTK_CELL_LAYOUT (column)), cancel_editing);
15669   tree_view->priv->edited_column = NULL;
15670 }
15671
15672
15673 /**
15674  * gtk_tree_view_set_hover_selection:
15675  * @tree_view: a #GtkTreeView
15676  * @hover: %TRUE to enable hover selection mode
15677  *
15678  * Enables or disables the hover selection mode of @tree_view.
15679  * Hover selection makes the selected row follow the pointer.
15680  * Currently, this works only for the selection modes
15681  * %GTK_SELECTION_SINGLE and %GTK_SELECTION_BROWSE.
15682  *
15683  * Since: 2.6
15684  **/
15685 void
15686 gtk_tree_view_set_hover_selection (GtkTreeView *tree_view,
15687                                    gboolean     hover)
15688 {
15689   hover = hover != FALSE;
15690
15691   if (hover != tree_view->priv->hover_selection)
15692     {
15693       tree_view->priv->hover_selection = hover;
15694
15695       g_object_notify (G_OBJECT (tree_view), "hover-selection");
15696     }
15697 }
15698
15699 /**
15700  * gtk_tree_view_get_hover_selection:
15701  * @tree_view: a #GtkTreeView
15702  *
15703  * Returns whether hover selection mode is turned on for @tree_view.
15704  *
15705  * Return value: %TRUE if @tree_view is in hover selection mode
15706  *
15707  * Since: 2.6
15708  **/
15709 gboolean
15710 gtk_tree_view_get_hover_selection (GtkTreeView *tree_view)
15711 {
15712   return tree_view->priv->hover_selection;
15713 }
15714
15715 /**
15716  * gtk_tree_view_set_hover_expand:
15717  * @tree_view: a #GtkTreeView
15718  * @expand: %TRUE to enable hover selection mode
15719  *
15720  * Enables of disables the hover expansion mode of @tree_view.
15721  * Hover expansion makes rows expand or collapse if the pointer
15722  * moves over them.
15723  *
15724  * Since: 2.6
15725  **/
15726 void
15727 gtk_tree_view_set_hover_expand (GtkTreeView *tree_view,
15728                                 gboolean     expand)
15729 {
15730   expand = expand != FALSE;
15731
15732   if (expand != tree_view->priv->hover_expand)
15733     {
15734       tree_view->priv->hover_expand = expand;
15735
15736       g_object_notify (G_OBJECT (tree_view), "hover-expand");
15737     }
15738 }
15739
15740 /**
15741  * gtk_tree_view_get_hover_expand:
15742  * @tree_view: a #GtkTreeView
15743  *
15744  * Returns whether hover expansion mode is turned on for @tree_view.
15745  *
15746  * Return value: %TRUE if @tree_view is in hover expansion mode
15747  *
15748  * Since: 2.6
15749  **/
15750 gboolean
15751 gtk_tree_view_get_hover_expand (GtkTreeView *tree_view)
15752 {
15753   return tree_view->priv->hover_expand;
15754 }
15755
15756 /**
15757  * gtk_tree_view_set_rubber_banding:
15758  * @tree_view: a #GtkTreeView
15759  * @enable: %TRUE to enable rubber banding
15760  *
15761  * Enables or disables rubber banding in @tree_view.  If the selection mode
15762  * is #GTK_SELECTION_MULTIPLE, rubber banding will allow the user to select
15763  * multiple rows by dragging the mouse.
15764  *
15765  * Since: 2.10
15766  **/
15767 void
15768 gtk_tree_view_set_rubber_banding (GtkTreeView *tree_view,
15769                                   gboolean     enable)
15770 {
15771   enable = enable != FALSE;
15772
15773   if (enable != tree_view->priv->rubber_banding_enable)
15774     {
15775       tree_view->priv->rubber_banding_enable = enable;
15776
15777       g_object_notify (G_OBJECT (tree_view), "rubber-banding");
15778     }
15779 }
15780
15781 /**
15782  * gtk_tree_view_get_rubber_banding:
15783  * @tree_view: a #GtkTreeView
15784  *
15785  * Returns whether rubber banding is turned on for @tree_view.  If the
15786  * selection mode is #GTK_SELECTION_MULTIPLE, rubber banding will allow the
15787  * user to select multiple rows by dragging the mouse.
15788  *
15789  * Return value: %TRUE if rubber banding in @tree_view is enabled.
15790  *
15791  * Since: 2.10
15792  **/
15793 gboolean
15794 gtk_tree_view_get_rubber_banding (GtkTreeView *tree_view)
15795 {
15796   return tree_view->priv->rubber_banding_enable;
15797 }
15798
15799 /**
15800  * gtk_tree_view_is_rubber_banding_active:
15801  * @tree_view: a #GtkTreeView
15802  *
15803  * Returns whether a rubber banding operation is currently being done
15804  * in @tree_view.
15805  *
15806  * Return value: %TRUE if a rubber banding operation is currently being
15807  * done in @tree_view.
15808  *
15809  * Since: 2.12
15810  **/
15811 gboolean
15812 gtk_tree_view_is_rubber_banding_active (GtkTreeView *tree_view)
15813 {
15814   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), FALSE);
15815
15816   if (tree_view->priv->rubber_banding_enable
15817       && tree_view->priv->rubber_band_status == RUBBER_BAND_ACTIVE)
15818     return TRUE;
15819
15820   return FALSE;
15821 }
15822
15823 /**
15824  * gtk_tree_view_get_row_separator_func: (skip)
15825  * @tree_view: a #GtkTreeView
15826  *
15827  * Returns the current row separator function.
15828  *
15829  * Return value: the current row separator function.
15830  *
15831  * Since: 2.6
15832  **/
15833 GtkTreeViewRowSeparatorFunc
15834 gtk_tree_view_get_row_separator_func (GtkTreeView *tree_view)
15835 {
15836   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), NULL);
15837
15838   return tree_view->priv->row_separator_func;
15839 }
15840
15841 /**
15842  * gtk_tree_view_set_row_separator_func:
15843  * @tree_view: a #GtkTreeView
15844  * @func: (allow-none): a #GtkTreeViewRowSeparatorFunc
15845  * @data: (allow-none): user data to pass to @func, or %NULL
15846  * @destroy: (allow-none): destroy notifier for @data, or %NULL
15847  *
15848  * Sets the row separator function, which is used to determine
15849  * whether a row should be drawn as a separator. If the row separator
15850  * function is %NULL, no separators are drawn. This is the default value.
15851  *
15852  * Since: 2.6
15853  **/
15854 void
15855 gtk_tree_view_set_row_separator_func (GtkTreeView                 *tree_view,
15856                                       GtkTreeViewRowSeparatorFunc  func,
15857                                       gpointer                     data,
15858                                       GDestroyNotify               destroy)
15859 {
15860   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
15861
15862   if (tree_view->priv->row_separator_destroy)
15863     tree_view->priv->row_separator_destroy (tree_view->priv->row_separator_data);
15864
15865   tree_view->priv->row_separator_func = func;
15866   tree_view->priv->row_separator_data = data;
15867   tree_view->priv->row_separator_destroy = destroy;
15868
15869   /* Have the tree recalculate heights */
15870   _gtk_rbtree_mark_invalid (tree_view->priv->tree);
15871   gtk_widget_queue_resize (GTK_WIDGET (tree_view));
15872 }
15873
15874
15875 static void
15876 gtk_tree_view_grab_notify (GtkWidget *widget,
15877                            gboolean   was_grabbed)
15878 {
15879   GtkTreeView *tree_view = GTK_TREE_VIEW (widget);
15880
15881   tree_view->priv->in_grab = !was_grabbed;
15882
15883   if (!was_grabbed)
15884     {
15885       tree_view->priv->pressed_button = -1;
15886
15887       if (tree_view->priv->rubber_band_status)
15888         gtk_tree_view_stop_rubber_band (tree_view);
15889     }
15890 }
15891
15892 static void
15893 gtk_tree_view_state_flags_changed (GtkWidget     *widget,
15894                                    GtkStateFlags  previous_state)
15895 {
15896   if (gtk_widget_get_realized (widget))
15897     gtk_tree_view_ensure_background (GTK_TREE_VIEW (widget));
15898
15899   gtk_widget_queue_draw (widget);
15900 }
15901
15902 /**
15903  * gtk_tree_view_get_grid_lines:
15904  * @tree_view: a #GtkTreeView
15905  *
15906  * Returns which grid lines are enabled in @tree_view.
15907  *
15908  * Return value: a #GtkTreeViewGridLines value indicating which grid lines
15909  * are enabled.
15910  *
15911  * Since: 2.10
15912  */
15913 GtkTreeViewGridLines
15914 gtk_tree_view_get_grid_lines (GtkTreeView *tree_view)
15915 {
15916   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), 0);
15917
15918   return tree_view->priv->grid_lines;
15919 }
15920
15921 /**
15922  * gtk_tree_view_set_grid_lines:
15923  * @tree_view: a #GtkTreeView
15924  * @grid_lines: a #GtkTreeViewGridLines value indicating which grid lines to
15925  * enable.
15926  *
15927  * Sets which grid lines to draw in @tree_view.
15928  *
15929  * Since: 2.10
15930  */
15931 void
15932 gtk_tree_view_set_grid_lines (GtkTreeView           *tree_view,
15933                               GtkTreeViewGridLines   grid_lines)
15934 {
15935   GtkTreeViewPrivate *priv;
15936   GtkWidget *widget;
15937   GtkTreeViewGridLines old_grid_lines;
15938
15939   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
15940
15941   priv = tree_view->priv;
15942   widget = GTK_WIDGET (tree_view);
15943
15944   old_grid_lines = priv->grid_lines;
15945   priv->grid_lines = grid_lines;
15946
15947   if (gtk_widget_get_realized (widget))
15948     {
15949       if (grid_lines == GTK_TREE_VIEW_GRID_LINES_NONE &&
15950           priv->grid_line_width)
15951         {
15952           priv->grid_line_width = 0;
15953         }
15954
15955       if (grid_lines != GTK_TREE_VIEW_GRID_LINES_NONE &&
15956           !priv->grid_line_width)
15957         {
15958           gint8 *dash_list;
15959
15960           gtk_widget_style_get (widget,
15961                                 "grid-line-width", &priv->grid_line_width,
15962                                 "grid-line-pattern", (gchar *)&dash_list,
15963                                 NULL);
15964
15965           if (dash_list)
15966             {
15967               priv->grid_line_dashes[0] = dash_list[0];
15968               if (dash_list[0])
15969                 priv->grid_line_dashes[1] = dash_list[1];
15970
15971               g_free (dash_list);
15972             }
15973           else
15974             {
15975               priv->grid_line_dashes[0] = 1;
15976               priv->grid_line_dashes[1] = 1;
15977             }
15978         }
15979     }
15980
15981   if (old_grid_lines != grid_lines)
15982     {
15983       gtk_widget_queue_draw (GTK_WIDGET (tree_view));
15984
15985       g_object_notify (G_OBJECT (tree_view), "enable-grid-lines");
15986     }
15987 }
15988
15989 /**
15990  * gtk_tree_view_get_enable_tree_lines:
15991  * @tree_view: a #GtkTreeView.
15992  *
15993  * Returns whether or not tree lines are drawn in @tree_view.
15994  *
15995  * Return value: %TRUE if tree lines are drawn in @tree_view, %FALSE
15996  * otherwise.
15997  *
15998  * Since: 2.10
15999  */
16000 gboolean
16001 gtk_tree_view_get_enable_tree_lines (GtkTreeView *tree_view)
16002 {
16003   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), FALSE);
16004
16005   return tree_view->priv->tree_lines_enabled;
16006 }
16007
16008 /**
16009  * gtk_tree_view_set_enable_tree_lines:
16010  * @tree_view: a #GtkTreeView
16011  * @enabled: %TRUE to enable tree line drawing, %FALSE otherwise.
16012  *
16013  * Sets whether to draw lines interconnecting the expanders in @tree_view.
16014  * This does not have any visible effects for lists.
16015  *
16016  * Since: 2.10
16017  */
16018 void
16019 gtk_tree_view_set_enable_tree_lines (GtkTreeView *tree_view,
16020                                      gboolean     enabled)
16021 {
16022   GtkTreeViewPrivate *priv;
16023   GtkWidget *widget;
16024   gboolean was_enabled;
16025
16026   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
16027
16028   enabled = enabled != FALSE;
16029
16030   priv = tree_view->priv;
16031   widget = GTK_WIDGET (tree_view);
16032
16033   was_enabled = priv->tree_lines_enabled;
16034
16035   priv->tree_lines_enabled = enabled;
16036
16037   if (gtk_widget_get_realized (widget))
16038     {
16039       if (!enabled && priv->tree_line_width)
16040         {
16041           priv->tree_line_width = 0;
16042         }
16043
16044       if (enabled && !priv->tree_line_width)
16045         {
16046           gint8 *dash_list;
16047           gtk_widget_style_get (widget,
16048                                 "tree-line-width", &priv->tree_line_width,
16049                                 "tree-line-pattern", (gchar *)&dash_list,
16050                                 NULL);
16051
16052           if (dash_list)
16053             {
16054               priv->tree_line_dashes[0] = dash_list[0];
16055               if (dash_list[0])
16056                 priv->tree_line_dashes[1] = dash_list[1];
16057
16058               g_free (dash_list);
16059             }
16060           else
16061             {
16062               priv->tree_line_dashes[0] = 1;
16063               priv->tree_line_dashes[1] = 1;
16064             }
16065         }
16066     }
16067
16068   if (was_enabled != enabled)
16069     {
16070       gtk_widget_queue_draw (GTK_WIDGET (tree_view));
16071
16072       g_object_notify (G_OBJECT (tree_view), "enable-tree-lines");
16073     }
16074 }
16075
16076
16077 /**
16078  * gtk_tree_view_set_show_expanders:
16079  * @tree_view: a #GtkTreeView
16080  * @enabled: %TRUE to enable expander drawing, %FALSE otherwise.
16081  *
16082  * Sets whether to draw and enable expanders and indent child rows in
16083  * @tree_view.  When disabled there will be no expanders visible in trees
16084  * and there will be no way to expand and collapse rows by default.  Also
16085  * note that hiding the expanders will disable the default indentation.  You
16086  * can set a custom indentation in this case using
16087  * gtk_tree_view_set_level_indentation().
16088  * This does not have any visible effects for lists.
16089  *
16090  * Since: 2.12
16091  */
16092 void
16093 gtk_tree_view_set_show_expanders (GtkTreeView *tree_view,
16094                                   gboolean     enabled)
16095 {
16096   gboolean was_enabled;
16097
16098   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
16099
16100   enabled = enabled != FALSE;
16101   was_enabled = tree_view->priv->show_expanders;
16102
16103   tree_view->priv->show_expanders = enabled == TRUE;
16104
16105   if (enabled != was_enabled)
16106     gtk_widget_queue_draw (GTK_WIDGET (tree_view));
16107 }
16108
16109 /**
16110  * gtk_tree_view_get_show_expanders:
16111  * @tree_view: a #GtkTreeView.
16112  *
16113  * Returns whether or not expanders are drawn in @tree_view.
16114  *
16115  * Return value: %TRUE if expanders are drawn in @tree_view, %FALSE
16116  * otherwise.
16117  *
16118  * Since: 2.12
16119  */
16120 gboolean
16121 gtk_tree_view_get_show_expanders (GtkTreeView *tree_view)
16122 {
16123   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), FALSE);
16124
16125   return tree_view->priv->show_expanders;
16126 }
16127
16128 /**
16129  * gtk_tree_view_set_level_indentation:
16130  * @tree_view: a #GtkTreeView
16131  * @indentation: the amount, in pixels, of extra indentation in @tree_view.
16132  *
16133  * Sets the amount of extra indentation for child levels to use in @tree_view
16134  * in addition to the default indentation.  The value should be specified in
16135  * pixels, a value of 0 disables this feature and in this case only the default
16136  * indentation will be used.
16137  * This does not have any visible effects for lists.
16138  *
16139  * Since: 2.12
16140  */
16141 void
16142 gtk_tree_view_set_level_indentation (GtkTreeView *tree_view,
16143                                      gint         indentation)
16144 {
16145   tree_view->priv->level_indentation = indentation;
16146
16147   gtk_widget_queue_draw (GTK_WIDGET (tree_view));
16148 }
16149
16150 /**
16151  * gtk_tree_view_get_level_indentation:
16152  * @tree_view: a #GtkTreeView.
16153  *
16154  * Returns the amount, in pixels, of extra indentation for child levels
16155  * in @tree_view.
16156  *
16157  * Return value: the amount of extra indentation for child levels in
16158  * @tree_view.  A return value of 0 means that this feature is disabled.
16159  *
16160  * Since: 2.12
16161  */
16162 gint
16163 gtk_tree_view_get_level_indentation (GtkTreeView *tree_view)
16164 {
16165   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), 0);
16166
16167   return tree_view->priv->level_indentation;
16168 }
16169
16170 /**
16171  * gtk_tree_view_set_tooltip_row:
16172  * @tree_view: a #GtkTreeView
16173  * @tooltip: a #GtkTooltip
16174  * @path: a #GtkTreePath
16175  *
16176  * Sets the tip area of @tooltip to be the area covered by the row at @path.
16177  * See also gtk_tree_view_set_tooltip_column() for a simpler alternative.
16178  * See also gtk_tooltip_set_tip_area().
16179  *
16180  * Since: 2.12
16181  */
16182 void
16183 gtk_tree_view_set_tooltip_row (GtkTreeView *tree_view,
16184                                GtkTooltip  *tooltip,
16185                                GtkTreePath *path)
16186 {
16187   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
16188   g_return_if_fail (GTK_IS_TOOLTIP (tooltip));
16189
16190   gtk_tree_view_set_tooltip_cell (tree_view, tooltip, path, NULL, NULL);
16191 }
16192
16193 /**
16194  * gtk_tree_view_set_tooltip_cell:
16195  * @tree_view: a #GtkTreeView
16196  * @tooltip: a #GtkTooltip
16197  * @path: (allow-none): a #GtkTreePath or %NULL
16198  * @column: (allow-none): a #GtkTreeViewColumn or %NULL
16199  * @cell: (allow-none): a #GtkCellRenderer or %NULL
16200  *
16201  * Sets the tip area of @tooltip to the area @path, @column and @cell have
16202  * in common.  For example if @path is %NULL and @column is set, the tip
16203  * area will be set to the full area covered by @column.  See also
16204  * gtk_tooltip_set_tip_area().
16205  *
16206  * Note that if @path is not specified and @cell is set and part of a column
16207  * containing the expander, the tooltip might not show and hide at the correct
16208  * position.  In such cases @path must be set to the current node under the
16209  * mouse cursor for this function to operate correctly.
16210  *
16211  * See also gtk_tree_view_set_tooltip_column() for a simpler alternative.
16212  *
16213  * Since: 2.12
16214  */
16215 void
16216 gtk_tree_view_set_tooltip_cell (GtkTreeView       *tree_view,
16217                                 GtkTooltip        *tooltip,
16218                                 GtkTreePath       *path,
16219                                 GtkTreeViewColumn *column,
16220                                 GtkCellRenderer   *cell)
16221 {
16222   GtkAllocation allocation;
16223   GdkRectangle rect;
16224
16225   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
16226   g_return_if_fail (GTK_IS_TOOLTIP (tooltip));
16227   g_return_if_fail (column == NULL || GTK_IS_TREE_VIEW_COLUMN (column));
16228   g_return_if_fail (cell == NULL || GTK_IS_CELL_RENDERER (cell));
16229
16230   /* Determine x values. */
16231   if (column && cell)
16232     {
16233       GdkRectangle tmp;
16234       gint start, width;
16235
16236       /* We always pass in path here, whether it is NULL or not.
16237        * For cells in expander columns path must be specified so that
16238        * we can correctly account for the indentation.  This also means
16239        * that the tooltip is constrained vertically by the "Determine y
16240        * values" code below; this is not a real problem since cells actually
16241        * don't stretch vertically in constrast to columns.
16242        */
16243       gtk_tree_view_get_cell_area (tree_view, path, column, &tmp);
16244       gtk_tree_view_column_cell_get_position (column, cell, &start, &width);
16245
16246       gtk_tree_view_convert_bin_window_to_widget_coords (tree_view,
16247                                                          tmp.x + start, 0,
16248                                                          &rect.x, NULL);
16249       rect.width = width;
16250     }
16251   else if (column)
16252     {
16253       GdkRectangle tmp;
16254
16255       gtk_tree_view_get_background_area (tree_view, NULL, column, &tmp);
16256       gtk_tree_view_convert_bin_window_to_widget_coords (tree_view,
16257                                                          tmp.x, 0,
16258                                                          &rect.x, NULL);
16259       rect.width = tmp.width;
16260     }
16261   else
16262     {
16263       gtk_widget_get_allocation (GTK_WIDGET (tree_view), &allocation);
16264       rect.x = 0;
16265       rect.width = allocation.width;
16266     }
16267
16268   /* Determine y values. */
16269   if (path)
16270     {
16271       GdkRectangle tmp;
16272
16273       gtk_tree_view_get_background_area (tree_view, path, NULL, &tmp);
16274       gtk_tree_view_convert_bin_window_to_widget_coords (tree_view,
16275                                                          0, tmp.y,
16276                                                          NULL, &rect.y);
16277       rect.height = tmp.height;
16278     }
16279   else
16280     {
16281       rect.y = 0;
16282       rect.height = gtk_adjustment_get_page_size (tree_view->priv->vadjustment);
16283     }
16284
16285   gtk_tooltip_set_tip_area (tooltip, &rect);
16286 }
16287
16288 /**
16289  * gtk_tree_view_get_tooltip_context:
16290  * @tree_view: a #GtkTreeView
16291  * @x: (inout): the x coordinate (relative to widget coordinates)
16292  * @y: (inout): the y coordinate (relative to widget coordinates)
16293  * @keyboard_tip: whether this is a keyboard tooltip or not
16294  * @model: (out) (allow-none) (transfer none): a pointer to receive a
16295  *         #GtkTreeModel or %NULL
16296  * @path: (out) (allow-none): a pointer to receive a #GtkTreePath or %NULL
16297  * @iter: (out) (allow-none): a pointer to receive a #GtkTreeIter or %NULL
16298  *
16299  * This function is supposed to be used in a #GtkWidget::query-tooltip
16300  * signal handler for #GtkTreeView.  The @x, @y and @keyboard_tip values
16301  * which are received in the signal handler, should be passed to this
16302  * function without modification.
16303  *
16304  * The return value indicates whether there is a tree view row at the given
16305  * coordinates (%TRUE) or not (%FALSE) for mouse tooltips.  For keyboard
16306  * tooltips the row returned will be the cursor row.  When %TRUE, then any of
16307  * @model, @path and @iter which have been provided will be set to point to
16308  * that row and the corresponding model.  @x and @y will always be converted
16309  * to be relative to @tree_view's bin_window if @keyboard_tooltip is %FALSE.
16310  *
16311  * Return value: whether or not the given tooltip context points to a row.
16312  *
16313  * Since: 2.12
16314  */
16315 gboolean
16316 gtk_tree_view_get_tooltip_context (GtkTreeView   *tree_view,
16317                                    gint          *x,
16318                                    gint          *y,
16319                                    gboolean       keyboard_tip,
16320                                    GtkTreeModel **model,
16321                                    GtkTreePath  **path,
16322                                    GtkTreeIter   *iter)
16323 {
16324   GtkTreePath *tmppath = NULL;
16325
16326   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), FALSE);
16327   g_return_val_if_fail (x != NULL, FALSE);
16328   g_return_val_if_fail (y != NULL, FALSE);
16329
16330   if (keyboard_tip)
16331     {
16332       gtk_tree_view_get_cursor (tree_view, &tmppath, NULL);
16333
16334       if (!tmppath)
16335         return FALSE;
16336     }
16337   else
16338     {
16339       gtk_tree_view_convert_widget_to_bin_window_coords (tree_view, *x, *y,
16340                                                          x, y);
16341
16342       if (!gtk_tree_view_get_path_at_pos (tree_view, *x, *y,
16343                                           &tmppath, NULL, NULL, NULL))
16344         return FALSE;
16345     }
16346
16347   if (model)
16348     *model = gtk_tree_view_get_model (tree_view);
16349
16350   if (iter)
16351     gtk_tree_model_get_iter (gtk_tree_view_get_model (tree_view),
16352                              iter, tmppath);
16353
16354   if (path)
16355     *path = tmppath;
16356   else
16357     gtk_tree_path_free (tmppath);
16358
16359   return TRUE;
16360 }
16361
16362 static gboolean
16363 gtk_tree_view_set_tooltip_query_cb (GtkWidget  *widget,
16364                                     gint        x,
16365                                     gint        y,
16366                                     gboolean    keyboard_tip,
16367                                     GtkTooltip *tooltip,
16368                                     gpointer    data)
16369 {
16370   GValue value = G_VALUE_INIT;
16371   GValue transformed = G_VALUE_INIT;
16372   GtkTreeIter iter;
16373   GtkTreePath *path;
16374   GtkTreeModel *model;
16375   GtkTreeView *tree_view = GTK_TREE_VIEW (widget);
16376
16377   if (!gtk_tree_view_get_tooltip_context (GTK_TREE_VIEW (widget),
16378                                           &x, &y,
16379                                           keyboard_tip,
16380                                           &model, &path, &iter))
16381     return FALSE;
16382
16383   gtk_tree_model_get_value (model, &iter,
16384                             tree_view->priv->tooltip_column, &value);
16385
16386   g_value_init (&transformed, G_TYPE_STRING);
16387
16388   if (!g_value_transform (&value, &transformed))
16389     {
16390       g_value_unset (&value);
16391       gtk_tree_path_free (path);
16392
16393       return FALSE;
16394     }
16395
16396   g_value_unset (&value);
16397
16398   if (!g_value_get_string (&transformed))
16399     {
16400       g_value_unset (&transformed);
16401       gtk_tree_path_free (path);
16402
16403       return FALSE;
16404     }
16405
16406   gtk_tooltip_set_markup (tooltip, g_value_get_string (&transformed));
16407   gtk_tree_view_set_tooltip_row (tree_view, tooltip, path);
16408
16409   gtk_tree_path_free (path);
16410   g_value_unset (&transformed);
16411
16412   return TRUE;
16413 }
16414
16415 /**
16416  * gtk_tree_view_set_tooltip_column:
16417  * @tree_view: a #GtkTreeView
16418  * @column: an integer, which is a valid column number for @tree_view's model
16419  *
16420  * If you only plan to have simple (text-only) tooltips on full rows, you
16421  * can use this function to have #GtkTreeView handle these automatically
16422  * for you. @column should be set to the column in @tree_view's model
16423  * containing the tooltip texts, or -1 to disable this feature.
16424  *
16425  * When enabled, #GtkWidget::has-tooltip will be set to %TRUE and
16426  * @tree_view will connect a #GtkWidget::query-tooltip signal handler.
16427  *
16428  * Note that the signal handler sets the text with gtk_tooltip_set_markup(),
16429  * so &amp;, &lt;, etc have to be escaped in the text.
16430  *
16431  * Since: 2.12
16432  */
16433 void
16434 gtk_tree_view_set_tooltip_column (GtkTreeView *tree_view,
16435                                   gint         column)
16436 {
16437   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
16438
16439   if (column == tree_view->priv->tooltip_column)
16440     return;
16441
16442   if (column == -1)
16443     {
16444       g_signal_handlers_disconnect_by_func (tree_view,
16445                                             gtk_tree_view_set_tooltip_query_cb,
16446                                             NULL);
16447       gtk_widget_set_has_tooltip (GTK_WIDGET (tree_view), FALSE);
16448     }
16449   else
16450     {
16451       if (tree_view->priv->tooltip_column == -1)
16452         {
16453           g_signal_connect (tree_view, "query-tooltip",
16454                             G_CALLBACK (gtk_tree_view_set_tooltip_query_cb), NULL);
16455           gtk_widget_set_has_tooltip (GTK_WIDGET (tree_view), TRUE);
16456         }
16457     }
16458
16459   tree_view->priv->tooltip_column = column;
16460   g_object_notify (G_OBJECT (tree_view), "tooltip-column");
16461 }
16462
16463 /**
16464  * gtk_tree_view_get_tooltip_column:
16465  * @tree_view: a #GtkTreeView
16466  *
16467  * Returns the column of @tree_view's model which is being used for
16468  * displaying tooltips on @tree_view's rows.
16469  *
16470  * Return value: the index of the tooltip column that is currently being
16471  * used, or -1 if this is disabled.
16472  *
16473  * Since: 2.12
16474  */
16475 gint
16476 gtk_tree_view_get_tooltip_column (GtkTreeView *tree_view)
16477 {
16478   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), 0);
16479
16480   return tree_view->priv->tooltip_column;
16481 }