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

   1 /* gtktreeview.c
   2  * Copyright (C) 2000  Red Hat, Inc.,  Jonathan Blandford <jrb@redhat.com>
   3  *
   4  * This library is free software; you can redistribute it and/or
   5  * modify it under the terms of the GNU Library General Public
   6  * License as published by the Free Software Foundation; either
   7  * version 2 of the License, or (at your option) any later version.
   8  *
   9  * This library is distributed in the hope that it will be useful,
  10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  12  * Library General Public License for more details.
  13  *
  14  * You should have received a copy of the GNU Library General Public
  15  * License along with this library; if not, write to the
  16  * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
  17  * Boston, MA 02111-1307, USA.
  18  */
  19
  20
  21 #include "config.h"
  22
  23 #include <math.h>
  24 #include <string.h>
  25
  26 #include "gtktreeview.h"
  27 #include "gtkrbtree.h"
  28 #include "gtktreednd.h"
  29 #include "gtktreeprivate.h"
  30 #include "gtkcellrenderer.h"
  31 #include "gtkmarshalers.h"
  32 #include "gtkbuildable.h"
  33 #include "gtkbutton.h"
  34 #include "gtklabel.h"
  35 #include "gtkbox.h"
  36 #include "gtkarrow.h"
  37 #include "gtkintl.h"
  38 #include "gtkbindings.h"
  39 #include "gtkcontainer.h"
  40 #include "gtkentry.h"
  41 #include "gtkframe.h"
  42 #include "gtkmain.h"
  43 #include "gtktreemodelsort.h"
  44 #include "gtktooltip.h"
  45 #include "gtkscrollable.h"
  46 #include "gtkcelllayout.h"
  47 #include "gtkprivate.h"
  48 #include "gtkwidgetprivate.h"
  49 #include "gtkentryprivate.h"
  50 #include "gtkstylecontextprivate.h"
  51 #include "gtktypebuiltins.h"
  52 #include "gtkmain.h"
  53 #include "a11y/gtktreeviewaccessible.h"
  54
  55
  56 /**
  57  * SECTION:gtktreeview
  58  * @Short_description: A widget for displaying both trees and lists
  59  * @Title: GtkTreeView
  60  * @See_also: #GtkTreeViewColumn, #GtkTreeSelection, #GtkTreeDnd, #GtkTreeMode,
  61  *   #GtkTreeSortable, #GtkTreeModelSort, #GtkListStore, #GtkTreeStore,
  62  *   #GtkCellRenderer, #GtkCellEditable, #GtkCellRendererPixbuf,
  63  *   #GtkCellRendererText, #GtkCellRendererToggle
  64  *
  65  * Widget that displays any object that implements the #GtkTreeModel interface.
  66  *
  67  * Please refer to the <link linkend="TreeWidget">tree widget conceptual
  68  * overview</link> for an overview of all the objects and data types related
  69  * to the tree widget and how they work together.
  70  *
  71  * Several different coordinate systems are exposed in the GtkTreeView API.
  72  * These are:
  73  *
  74  * <inlinegraphic fileref="tree-view-coordinates.png" format="PNG"></inlinegraphic>
  75  * <variablelist><title>Coordinate systems in GtkTreeView API</title>
  76  * <varlistentry><term>Widget coordinates</term>
  77  * <listitem>
  78  * <para>
  79  * Coordinates relative to the widget (usually <literal>widget->window</literal>).
  80  * </para>
  81  * </listitem>
  82  * </varlistentry>
  83  * <varlistentry><term>Bin window coordinates</term>
  84  * <listitem>
  85  * <para>
  86  * Coordinates relative to the window that GtkTreeView renders to.
  87  * </para>
  88  * </listitem>
  89  * </varlistentry>
  90  * <varlistentry><term>Tree coordinates</term>
  91  * <listitem>
  92  * <para>
  93  * Coordinates relative to the entire scrollable area of GtkTreeView. These
  94  * coordinates start at (0, 0) for row 0 of the tree.
  95  * </para>
  96  * </listitem>
  97  * </varlistentry>
  98  * </variablelist>
  99  *
 100  * Several functions are available for converting between the different
 101  * coordinate systems.  The most common translations are between widget and bin
 102  * window coordinates and between bin window and tree coordinates. For the
 103  * former you can use gtk_tree_view_convert_widget_to_bin_window_coords()
 104  * (and vice versa), for the latter gtk_tree_view_convert_bin_window_to_tree_coords()
 105  * (and vice versa).
 106  *
 107  * <refsect2 id="GtkTreeView-BUILDER-UI">
 108  * <title>GtkTreeView as GtkBuildable</title>
 109  * The GtkTreeView implementation of the GtkBuildable interface accepts
 110  * #GtkTreeViewColumn objects as &lt;child&gt; elements and exposes the
 111  * internal #GtkTreeSelection in UI definitions.
 112  * <example>
 113  * <title>A UI definition fragment with GtkTreeView</title>
 114  * <programlisting><![CDATA[
 115  * <object class="GtkTreeView" id="treeview">
 116  *   <property name="model">liststore1</property>
 117  *   <child>
 118  *     <object class="GtkTreeViewColumn" id="test-column">
 119  *       <property name="title">Test</property>
 120  *       <child>
 121  *         <object class="GtkCellRendererText" id="test-renderer"/>
 122  *         <attributes>
 123  *           <attribute name="text">1</attribute>
 124  *         </attributes>
 125  *       </child>
 126  *     </object>
 127  *   </child>
 128  *   <child internal-child="selection">
 129  *     <object class="GtkTreeSelection" id="selection">
 130  *       <signal name="changed" handler="on_treeview_selection_changed"/>
 131  *     </object>
 132  *   </child>
 133  * </object>
 134  * ]]></programlisting>
 135  * </example>
 136  * </refsect2>
 137  */
 138
 139 enum
 140 {
 141   DRAG_COLUMN_WINDOW_STATE_UNSET = 0,
 142   DRAG_COLUMN_WINDOW_STATE_ORIGINAL = 1,
 143   DRAG_COLUMN_WINDOW_STATE_ARROW = 2,
 144   DRAG_COLUMN_WINDOW_STATE_ARROW_LEFT = 3,
 145   DRAG_COLUMN_WINDOW_STATE_ARROW_RIGHT = 4
 146 };
 147
 148 enum
 149 {
 150   RUBBER_BAND_OFF = 0,
 151   RUBBER_BAND_MAYBE_START = 1,
 152   RUBBER_BAND_ACTIVE = 2
 153 };
 154
 155 typedef enum {
 156   CLEAR_AND_SELECT = (1 << 0),
 157   CLAMP_NODE       = (1 << 1),
 158   CURSOR_INVALID   = (1 << 2)
 159 } SetCursorFlags;
 160
 161  /* This lovely little value is used to determine how far away from the title bar
 162   * you can move the mouse and still have a column drag work.
 163   */
 164 #define TREE_VIEW_COLUMN_DRAG_DEAD_MULTIPLIER(tree_view) (10*gtk_tree_view_get_effective_header_height(tree_view))
 165
 166 #ifdef __GNUC__
 167
 168 #define TREE_VIEW_INTERNAL_ASSERT(expr, ret)     G_STMT_START{          \
 169      if (!(expr))                                                       \
 170        {                                                                \
 171          g_log (G_LOG_DOMAIN,                                           \
 172                 G_LOG_LEVEL_CRITICAL,                                   \
 173                 "%s (%s): assertion `%s' failed.\n"                     \
 174                 "There is a disparity between the internal view of the GtkTreeView,\n"    \
 175                 "and the GtkTreeModel.  This generally means that the model has changed\n"\
 176                 "without letting the view know.  Any display from now on is likely to\n"  \
 177                 "be incorrect.\n",                                                        \
 178                 G_STRLOC,                                               \
 179                 G_STRFUNC,                                              \
 180                 #expr);                                                 \
 181          return ret;                                                    \
 182        };                               }G_STMT_END
 183
 184 #define TREE_VIEW_INTERNAL_ASSERT_VOID(expr)     G_STMT_START{          \
 185      if (!(expr))                                                       \
 186        {                                                                \
 187          g_log (G_LOG_DOMAIN,                                           \
 188                 G_LOG_LEVEL_CRITICAL,                                   \
 189                 "%s (%s): assertion `%s' failed.\n"                     \
 190                 "There is a disparity between the internal view of the GtkTreeView,\n"    \
 191                 "and the GtkTreeModel.  This generally means that the model has changed\n"\
 192                 "without letting the view know.  Any display from now on is likely to\n"  \
 193                 "be incorrect.\n",                                                        \
 194                 G_STRLOC,                                               \
 195                 G_STRFUNC,                                              \
 196                 #expr);                                                 \
 197          return;                                                        \
 198        };                               }G_STMT_END
 199
 200 #else
 201
 202 #define TREE_VIEW_INTERNAL_ASSERT(expr, ret)     G_STMT_START{          \
 203      if (!(expr))                                                       \
 204        {                                                                \
 205          g_log (G_LOG_DOMAIN,                                           \
 206                 G_LOG_LEVEL_CRITICAL,                                   \
 207                 "file %s: line %d: assertion `%s' failed.\n"       \
 208                 "There is a disparity between the internal view of the GtkTreeView,\n"    \
 209                 "and the GtkTreeModel.  This generally means that the model has changed\n"\
 210                 "without letting the view know.  Any display from now on is likely to\n"  \
 211                 "be incorrect.\n",                                                        \
 212                 __FILE__,                                               \
 213                 __LINE__,                                               \
 214                 #expr);                                                 \
 215          return ret;                                                    \
 216        };                               }G_STMT_END
 217
 218 #define TREE_VIEW_INTERNAL_ASSERT_VOID(expr)     G_STMT_START{          \
 219      if (!(expr))                                                       \
 220        {                                                                \
 221          g_log (G_LOG_DOMAIN,                                           \
 222                 G_LOG_LEVEL_CRITICAL,                                   \
 223                 "file %s: line %d: assertion '%s' failed.\n"            \
 224                 "There is a disparity between the internal view of the GtkTreeView,\n"    \
 225                 "and the GtkTreeModel.  This generally means that the model has changed\n"\
 226                 "without letting the view know.  Any display from now on is likely to\n"  \
 227                 "be incorrect.\n",                                                        \
 228                 __FILE__,                                               \
 229                 __LINE__,                                               \
 230                 #expr);                                                 \
 231          return;                                                        \
 232        };                               }G_STMT_END
 233 #endif
 234
 235 #define GTK_TREE_VIEW_PRIORITY_VALIDATE (GDK_PRIORITY_REDRAW + 5)
 236 #define GTK_TREE_VIEW_PRIORITY_SCROLL_SYNC (GTK_TREE_VIEW_PRIORITY_VALIDATE + 2)
 237 #define GTK_TREE_VIEW_TIME_MS_PER_IDLE 30
 238 #define SCROLL_EDGE_SIZE 15
 239 #define EXPANDER_EXTRA_PADDING 4
 240 #define GTK_TREE_VIEW_SEARCH_DIALOG_TIMEOUT 5000
 241 #define AUTO_EXPAND_TIMEOUT 500
 242
 243 /* Translate from bin_window coordinates to rbtree (tree coordinates) and
 244  * vice versa.
 245  */
 246 #define TREE_WINDOW_Y_TO_RBTREE_Y(tree_view,y) ((y) + tree_view->priv->dy)
 247 #define RBTREE_Y_TO_TREE_WINDOW_Y(tree_view,y) ((y) - tree_view->priv->dy)
 248
 249 typedef struct _GtkTreeViewColumnReorder GtkTreeViewColumnReorder;
 250 struct _GtkTreeViewColumnReorder
 251 {
 252   gint left_align;
 253   gint right_align;
 254   GtkTreeViewColumn *left_column;
 255   GtkTreeViewColumn *right_column;
 256 };
 257
 258 typedef struct _GtkTreeViewChild GtkTreeViewChild;
 259 struct _GtkTreeViewChild
 260 {
 261   GtkWidget *widget;
 262   gint x;
 263   gint y;
 264   gint width;
 265   gint height;
 266 };
 267
 268
 269 typedef struct _TreeViewDragInfo TreeViewDragInfo;
 270 struct _TreeViewDragInfo
 271 {
 272   GdkModifierType start_button_mask;
 273   GtkTargetList *_unused_source_target_list;
 274   GdkDragAction source_actions;
 275
 276   GtkTargetList *_unused_dest_target_list;
 277
 278   guint source_set : 1;
 279   guint dest_set : 1;
 280 };
 281
 282
 283 struct _GtkTreeViewPrivate
 284 {
 285   GtkTreeModel *model;
 286
 287   /* tree information */
 288   GtkRBTree *tree;
 289
 290   /* Container info */
 291   GList *children;
 292   gint width;
 293   gint height;
 294
 295   /* Adjustments */
 296   GtkAdjustment *hadjustment;
 297   GtkAdjustment *vadjustment;
 298   gint           min_display_width;
 299   gint           min_display_height;
 300
 301   /* Sub windows */
 302   GdkWindow *bin_window;
 303   GdkWindow *header_window;
 304
 305   /* Scroll position state keeping */
 306   GtkTreeRowReference *top_row;
 307   gint top_row_dy;
 308   /* dy == y pos of top_row + top_row_dy */
 309   /* we cache it for simplicity of the code */
 310   gint dy;
 311
 312   guint presize_handler_timer;
 313   guint validate_rows_timer;
 314   guint scroll_sync_timer;
 315
 316   /* Indentation and expander layout */
 317   gint expander_size;
 318   GtkTreeViewColumn *expander_column;
 319
 320   gint level_indentation;
 321
 322   /* Key navigation (focus), selection */
 323   gint cursor_offset;
 324
 325   GtkTreeRowReference *anchor;
 326   GtkRBNode *cursor_node;
 327   GtkRBTree *cursor_tree;
 328
 329   GtkTreeViewColumn *focus_column;
 330
 331   /* Current pressed node, previously pressed, prelight */
 332   GtkRBNode *button_pressed_node;
 333   GtkRBTree *button_pressed_tree;
 334
 335   gint pressed_button;
 336   gint press_start_x;
 337   gint press_start_y;
 338
 339   gint event_last_x;
 340   gint event_last_y;
 341
 342   guint last_button_time;
 343   gint last_button_x;
 344   gint last_button_y;
 345
 346   GtkRBNode *prelight_node;
 347   GtkRBTree *prelight_tree;
 348
 349   /* Cell Editing */
 350   GtkTreeViewColumn *edited_column;
 351
 352   /* The node that's currently being collapsed or expanded */
 353   GtkRBNode *expanded_collapsed_node;
 354   GtkRBTree *expanded_collapsed_tree;
 355   guint expand_collapse_timeout;
 356
 357   /* Auto expand/collapse timeout in hover mode */
 358   guint auto_expand_timeout;
 359
 360   /* Selection information */
 361   GtkTreeSelection *selection;
 362
 363   /* Header information */
 364   gint n_columns;
 365   GList *columns;
 366   gint header_height;
 367
 368   GtkTreeViewColumnDropFunc column_drop_func;
 369   gpointer column_drop_func_data;
 370   GDestroyNotify column_drop_func_data_destroy;
 371   GList *column_drag_info;
 372   GtkTreeViewColumnReorder *cur_reorder;
 373
 374   gint prev_width_before_expander;
 375
 376   /* Interactive Header reordering */
 377   GdkWindow *drag_window;
 378   GdkWindow *drag_highlight_window;
 379   GtkTreeViewColumn *drag_column;
 380   gint drag_column_x;
 381
 382   /* Interactive Header Resizing */
 383   gint drag_pos;
 384   gint x_drag;
 385
 386   /* Non-interactive Header Resizing, expand flag support */
 387   gint prev_width;
 388
 389   gint last_extra_space;
 390   gint last_extra_space_per_column;
 391   gint last_number_of_expand_columns;
 392
 393   /* ATK Hack */
 394   GtkTreeDestroyCountFunc destroy_count_func;
 395   gpointer destroy_count_data;
 396   GDestroyNotify destroy_count_destroy;
 397
 398   /* Scroll timeout (e.g. during dnd, rubber banding) */
 399   guint scroll_timeout;
 400
 401   /* Row drag-and-drop */
 402   GtkTreeRowReference *drag_dest_row;
 403   GtkTreeViewDropPosition drag_dest_pos;
 404   guint open_dest_timeout;
 405
 406   /* Rubber banding */
 407   gint rubber_band_status;
 408   gint rubber_band_x;
 409   gint rubber_band_y;
 410   gint rubber_band_extend;
 411   gint rubber_band_modify;
 412
 413   GtkRBNode *rubber_band_start_node;
 414   GtkRBTree *rubber_band_start_tree;
 415
 416   GtkRBNode *rubber_band_end_node;
 417   GtkRBTree *rubber_band_end_tree;
 418
 419   /* fixed height */
 420   gint fixed_height;
 421
 422   /* Scroll-to functionality when unrealized */
 423   GtkTreeRowReference *scroll_to_path;
 424   GtkTreeViewColumn *scroll_to_column;
 425   gfloat scroll_to_row_align;
 426   gfloat scroll_to_col_align;
 427
 428   /* Interactive search */
 429   gint selected_iter;
 430   gint search_column;
 431   GtkTreeViewSearchPositionFunc search_position_func;
 432   GtkTreeViewSearchEqualFunc search_equal_func;
 433   gpointer search_user_data;
 434   GDestroyNotify search_destroy;
 435   gpointer search_position_user_data;
 436   GDestroyNotify search_position_destroy;
 437   GtkWidget *search_window;
 438   GtkWidget *search_entry;
 439   gulong search_entry_changed_id;
 440   guint typeselect_flush_timeout;
 441
 442   /* Grid and tree lines */
 443   GtkTreeViewGridLines grid_lines;
 444   double grid_line_dashes[2];
 445   int grid_line_width;
 446
 447   gboolean tree_lines_enabled;
 448   double tree_line_dashes[2];
 449   int tree_line_width;
 450
 451   /* Row separators */
 452   GtkTreeViewRowSeparatorFunc row_separator_func;
 453   gpointer row_separator_data;
 454   GDestroyNotify row_separator_destroy;
 455
 456   /* Tooltip support */
 457   gint tooltip_column;
 458
 459   /* Here comes the bitfield */
 460   guint scroll_to_use_align : 1;
 461
 462   guint fixed_height_mode : 1;
 463   guint fixed_height_check : 1;
 464
 465   guint reorderable : 1;
 466   guint header_has_focus : 1;
 467   guint drag_column_window_state : 3;
 468   /* hint to display rows in alternating colors */
 469   guint has_rules : 1;
 470   guint mark_rows_col_dirty : 1;
 471
 472   /* for DnD */
 473   guint empty_view_drop : 1;
 474
 475   guint modify_selection_pressed : 1;
 476   guint extend_selection_pressed : 1;
 477
 478   guint init_hadjust_value : 1;
 479
 480   guint in_top_row_to_dy : 1;
 481
 482   /* interactive search */
 483   guint enable_search : 1;
 484   guint disable_popdown : 1;
 485   guint search_custom_entry_set : 1;
 486
 487   guint hover_selection : 1;
 488   guint hover_expand : 1;
 489   guint imcontext_changed : 1;
 490
 491   guint rubber_banding_enable : 1;
 492
 493   guint in_grab : 1;
 494
 495   guint post_validation_flag : 1;
 496
 497   /* Whether our key press handler is to avoid sending an unhandled binding to the search entry */
 498   guint search_entry_avoid_unhandled_binding : 1;
 499
 500   /* GtkScrollablePolicy needs to be checked when
 501    * driving the scrollable adjustment values */
 502   guint hscroll_policy : 1;
 503   guint vscroll_policy : 1;
 504
 505   /* GtkTreeView flags */
 506   guint is_list : 1;
 507   guint show_expanders : 1;
 508   guint in_column_resize : 1;
 509   guint arrow_prelit : 1;
 510   guint headers_visible : 1;
 511   guint draw_keyfocus : 1;
 512   guint model_setup : 1;
 513   guint in_column_drag : 1;
 514 };
 515
 516
 517 /* Signals */
 518 enum
 519 {
 520   ROW_ACTIVATED,
 521   TEST_EXPAND_ROW,
 522   TEST_COLLAPSE_ROW,
 523   ROW_EXPANDED,
 524   ROW_COLLAPSED,
 525   COLUMNS_CHANGED,
 526   CURSOR_CHANGED,
 527   MOVE_CURSOR,
 528   SELECT_ALL,
 529   UNSELECT_ALL,
 530   SELECT_CURSOR_ROW,
 531   TOGGLE_CURSOR_ROW,
 532   EXPAND_COLLAPSE_CURSOR_ROW,
 533   SELECT_CURSOR_PARENT,
 534   START_INTERACTIVE_SEARCH,
 535   LAST_SIGNAL
 536 };
 537
 538 /* Properties */
 539 enum {
 540   PROP_0,
 541   PROP_MODEL,
 542   PROP_HADJUSTMENT,
 543   PROP_VADJUSTMENT,
 544   PROP_HSCROLL_POLICY,
 545   PROP_VSCROLL_POLICY,
 546   PROP_HEADERS_VISIBLE,
 547   PROP_HEADERS_CLICKABLE,
 548   PROP_EXPANDER_COLUMN,
 549   PROP_REORDERABLE,
 550   PROP_RULES_HINT,
 551   PROP_ENABLE_SEARCH,
 552   PROP_SEARCH_COLUMN,
 553   PROP_FIXED_HEIGHT_MODE,
 554   PROP_HOVER_SELECTION,
 555   PROP_HOVER_EXPAND,
 556   PROP_SHOW_EXPANDERS,
 557   PROP_LEVEL_INDENTATION,
 558   PROP_RUBBER_BANDING,
 559   PROP_ENABLE_GRID_LINES,
 560   PROP_ENABLE_TREE_LINES,
 561   PROP_TOOLTIP_COLUMN
 562 };
 563
 564 /* object signals */
 565 static void     gtk_tree_view_finalize             (GObject          *object);
 566 static void     gtk_tree_view_set_property         (GObject         *object,
 567                                                     guint            prop_id,
 568                                                     const GValue    *value,
 569                                                     GParamSpec      *pspec);
 570 static void     gtk_tree_view_get_property         (GObject         *object,
 571                                                     guint            prop_id,
 572                                                     GValue          *value,
 573                                                     GParamSpec      *pspec);
 574
 575 /* gtkwidget signals */
 576 static void     gtk_tree_view_destroy              (GtkWidget        *widget);
 577 static void     gtk_tree_view_realize              (GtkWidget        *widget);
 578 static void     gtk_tree_view_unrealize            (GtkWidget        *widget);
 579 static void     gtk_tree_view_map                  (GtkWidget        *widget);
 580 static void     gtk_tree_view_get_preferred_width  (GtkWidget        *widget,
 581                                                     gint             *minimum,
 582                                                     gint             *natural);
 583 static void     gtk_tree_view_get_preferred_height (GtkWidget        *widget,
 584                                                     gint             *minimum,
 585                                                     gint             *natural);
 586 static void     gtk_tree_view_size_request         (GtkWidget        *widget,
 587                                                     GtkRequisition   *requisition,
 588                                                     gboolean          may_validate);
 589 static void     gtk_tree_view_size_allocate        (GtkWidget        *widget,
 590                                                     GtkAllocation    *allocation);
 591 static gboolean gtk_tree_view_draw                 (GtkWidget        *widget,
 592                                                     cairo_t          *cr);
 593 static gboolean gtk_tree_view_key_press            (GtkWidget        *widget,
 594                                                     GdkEventKey      *event);
 595 static gboolean gtk_tree_view_key_release          (GtkWidget        *widget,
 596                                                     GdkEventKey      *event);
 597 static gboolean gtk_tree_view_motion               (GtkWidget        *widget,
 598                                                     GdkEventMotion   *event);
 599 static gboolean gtk_tree_view_enter_notify         (GtkWidget        *widget,
 600                                                     GdkEventCrossing *event);
 601 static gboolean gtk_tree_view_leave_notify         (GtkWidget        *widget,
 602                                                     GdkEventCrossing *event);
 603 static gboolean gtk_tree_view_button_press         (GtkWidget        *widget,
 604                                                     GdkEventButton   *event);
 605 static gboolean gtk_tree_view_button_release       (GtkWidget        *widget,
 606                                                     GdkEventButton   *event);
 607 static gboolean gtk_tree_view_grab_broken          (GtkWidget          *widget,
 608                                                     GdkEventGrabBroken *event);
 609 #if 0
 610 static gboolean gtk_tree_view_configure            (GtkWidget         *widget,
 611                                                     GdkEventConfigure *event);
 612 #endif
 613
 614 static GtkWidgetPath * gtk_tree_view_get_path_for_child (GtkContainer *container,
 615                                                          GtkWidget    *child);
 616
 617 static void     gtk_tree_view_set_focus_child      (GtkContainer     *container,
 618                                                     GtkWidget        *child);
 619 static gint     gtk_tree_view_focus_out            (GtkWidget        *widget,
 620                                                     GdkEventFocus    *event);
 621 static gint     gtk_tree_view_focus                (GtkWidget        *widget,
 622                                                     GtkDirectionType  direction);
 623 static void     gtk_tree_view_grab_focus           (GtkWidget        *widget);
 624 static void     gtk_tree_view_style_updated        (GtkWidget        *widget);
 625 static void     gtk_tree_view_grab_notify          (GtkWidget        *widget,
 626                                                     gboolean          was_grabbed);
 627 static void     gtk_tree_view_state_flags_changed  (GtkWidget        *widget,
 628                                                     GtkStateFlags     previous_state);
 629
 630 /* container signals */
 631 static void     gtk_tree_view_remove               (GtkContainer     *container,
 632                                                     GtkWidget        *widget);
 633 static void     gtk_tree_view_forall               (GtkContainer     *container,
 634                                                     gboolean          include_internals,
 635                                                     GtkCallback       callback,
 636                                                     gpointer          callback_data);
 637
 638 /* Source side drag signals */
 639 static void gtk_tree_view_drag_begin       (GtkWidget        *widget,
 640                                             GdkDragContext   *context);
 641 static void gtk_tree_view_drag_end         (GtkWidget        *widget,
 642                                             GdkDragContext   *context);
 643 static void gtk_tree_view_drag_data_get    (GtkWidget        *widget,
 644                                             GdkDragContext   *context,
 645                                             GtkSelectionData *selection_data,
 646                                             guint             info,
 647                                             guint             time);
 648 static void gtk_tree_view_drag_data_delete (GtkWidget        *widget,
 649                                             GdkDragContext   *context);
 650
 651 /* Target side drag signals */
 652 static void     gtk_tree_view_drag_leave         (GtkWidget        *widget,
 653                                                   GdkDragContext   *context,
 654                                                   guint             time);
 655 static gboolean gtk_tree_view_drag_motion        (GtkWidget        *widget,
 656                                                   GdkDragContext   *context,
 657                                                   gint              x,
 658                                                   gint              y,
 659                                                   guint             time);
 660 static gboolean gtk_tree_view_drag_drop          (GtkWidget        *widget,
 661                                                   GdkDragContext   *context,
 662                                                   gint              x,
 663                                                   gint              y,
 664                                                   guint             time);
 665 static void     gtk_tree_view_drag_data_received (GtkWidget        *widget,
 666                                                   GdkDragContext   *context,
 667                                                   gint              x,
 668                                                   gint              y,
 669                                                   GtkSelectionData *selection_data,
 670                                                   guint             info,
 671                                                   guint             time);
 672
 673 /* tree_model signals */
 674 static gboolean gtk_tree_view_real_move_cursor            (GtkTreeView     *tree_view,
 675                                                            GtkMovementStep  step,
 676                                                            gint             count);
 677 static gboolean gtk_tree_view_real_select_all             (GtkTreeView     *tree_view);
 678 static gboolean gtk_tree_view_real_unselect_all           (GtkTreeView     *tree_view);
 679 static gboolean gtk_tree_view_real_select_cursor_row      (GtkTreeView     *tree_view,
 680                                                            gboolean         start_editing);
 681 static gboolean gtk_tree_view_real_toggle_cursor_row      (GtkTreeView     *tree_view);
 682 static gboolean gtk_tree_view_real_expand_collapse_cursor_row (GtkTreeView     *tree_view,
 683                                                                gboolean         logical,
 684                                                                gboolean         expand,
 685                                                                gboolean         open_all);
 686 static gboolean gtk_tree_view_real_select_cursor_parent   (GtkTreeView     *tree_view);
 687 static void gtk_tree_view_row_changed                     (GtkTreeModel    *model,
 688                                                            GtkTreePath     *path,
 689                                                            GtkTreeIter     *iter,
 690                                                            gpointer         data);
 691 static void gtk_tree_view_row_inserted                    (GtkTreeModel    *model,
 692                                                            GtkTreePath     *path,
 693                                                            GtkTreeIter     *iter,
 694                                                            gpointer         data);
 695 static void gtk_tree_view_row_has_child_toggled           (GtkTreeModel    *model,
 696                                                            GtkTreePath     *path,
 697                                                            GtkTreeIter     *iter,
 698                                                            gpointer         data);
 699 static void gtk_tree_view_row_deleted                     (GtkTreeModel    *model,
 700                                                            GtkTreePath     *path,
 701                                                            gpointer         data);
 702 static void gtk_tree_view_rows_reordered                  (GtkTreeModel    *model,
 703                                                            GtkTreePath     *parent,
 704                                                            GtkTreeIter     *iter,
 705                                                            gint            *new_order,
 706                                                            gpointer         data);
 707
 708 /* Incremental reflow */
 709 static gboolean validate_row             (GtkTreeView *tree_view,
 710                                           GtkRBTree   *tree,
 711                                           GtkRBNode   *node,
 712                                           GtkTreeIter *iter,
 713                                           GtkTreePath *path);
 714 static void     validate_visible_area    (GtkTreeView *tree_view);
 715 static gboolean validate_rows_handler    (GtkTreeView *tree_view);
 716 static gboolean do_validate_rows         (GtkTreeView *tree_view,
 717                                           gboolean     size_request);
 718 static gboolean validate_rows            (GtkTreeView *tree_view);
 719 static gboolean presize_handler_callback (gpointer     data);
 720 static void     install_presize_handler  (GtkTreeView *tree_view);
 721 static void     install_scroll_sync_handler (GtkTreeView *tree_view);
 722 static void     gtk_tree_view_set_top_row   (GtkTreeView *tree_view,
 723                                              GtkTreePath *path,
 724                                              gint         offset);
 725 static void     gtk_tree_view_dy_to_top_row (GtkTreeView *tree_view);
 726 static void     gtk_tree_view_top_row_to_dy (GtkTreeView *tree_view);
 727 static void     invalidate_empty_focus      (GtkTreeView *tree_view);
 728
 729 /* Internal functions */
 730 static gboolean gtk_tree_view_is_expander_column             (GtkTreeView        *tree_view,
 731                                                               GtkTreeViewColumn  *column);
 732 static inline gboolean gtk_tree_view_draw_expanders          (GtkTreeView        *tree_view);
 733 static void     gtk_tree_view_add_move_binding               (GtkBindingSet      *binding_set,
 734                                                               guint               keyval,
 735                                                               guint               modmask,
 736                                                               gboolean            add_shifted_binding,
 737                                                               GtkMovementStep     step,
 738                                                               gint                count);
 739 static gint     gtk_tree_view_unref_and_check_selection_tree (GtkTreeView        *tree_view,
 740                                                               GtkRBTree          *tree);
 741 static void     gtk_tree_view_queue_draw_path                (GtkTreeView        *tree_view,
 742                                                               GtkTreePath        *path,
 743                                                               const GdkRectangle *clip_rect);
 744 static void     gtk_tree_view_queue_draw_arrow               (GtkTreeView        *tree_view,
 745                                                               GtkRBTree          *tree,
 746                                                               GtkRBNode          *node);
 747 static void     gtk_tree_view_draw_arrow                     (GtkTreeView        *tree_view,
 748                                                               cairo_t            *cr,
 749                                                               GtkRBTree          *tree,
 750                                                               GtkRBNode          *node);
 751 static void     gtk_tree_view_get_arrow_xrange               (GtkTreeView        *tree_view,
 752                                                               GtkRBTree          *tree,
 753                                                               gint               *x1,
 754                                                               gint               *x2);
 755 static gint     gtk_tree_view_new_column_width               (GtkTreeView        *tree_view,
 756                                                               gint                i,
 757                                                               gint               *x);
 758 static void     gtk_tree_view_adjustment_changed             (GtkAdjustment      *adjustment,
 759                                                               GtkTreeView        *tree_view);
 760 static void     gtk_tree_view_build_tree                     (GtkTreeView        *tree_view,
 761                                                               GtkRBTree          *tree,
 762                                                               GtkTreeIter        *iter,
 763                                                               gint                depth,
 764                                                               gboolean            recurse);
 765 static void     gtk_tree_view_clamp_node_visible             (GtkTreeView        *tree_view,
 766                                                               GtkRBTree          *tree,
 767                                                               GtkRBNode          *node);
 768 static void     gtk_tree_view_clamp_column_visible           (GtkTreeView        *tree_view,
 769                                                               GtkTreeViewColumn  *column,
 770                                                               gboolean            focus_to_cell);
 771 static gboolean gtk_tree_view_maybe_begin_dragging_row       (GtkTreeView        *tree_view,
 772                                                               GdkEventMotion     *event);
 773 static void     gtk_tree_view_focus_to_cursor                (GtkTreeView        *tree_view);
 774 static void     gtk_tree_view_move_cursor_up_down            (GtkTreeView        *tree_view,
 775                                                               gint                count);
 776 static void     gtk_tree_view_move_cursor_page_up_down       (GtkTreeView        *tree_view,
 777                                                               gint                count);
 778 static void     gtk_tree_view_move_cursor_left_right         (GtkTreeView        *tree_view,
 779                                                               gint                count);
 780 static void     gtk_tree_view_move_cursor_start_end          (GtkTreeView        *tree_view,
 781                                                               gint                count);
 782 static gboolean gtk_tree_view_real_collapse_row              (GtkTreeView        *tree_view,
 783                                                               GtkTreePath        *path,
 784                                                               GtkRBTree          *tree,
 785                                                               GtkRBNode          *node,
 786                                                               gboolean            animate);
 787 static gboolean gtk_tree_view_real_expand_row                (GtkTreeView        *tree_view,
 788                                                               GtkTreePath        *path,
 789                                                               GtkRBTree          *tree,
 790                                                               GtkRBNode          *node,
 791                                                               gboolean            open_all,
 792                                                               gboolean            animate);
 793 static void     gtk_tree_view_real_set_cursor                (GtkTreeView        *tree_view,
 794                                                               GtkTreePath        *path,
 795                                                               SetCursorFlags      flags);
 796 static gboolean gtk_tree_view_has_can_focus_cell             (GtkTreeView        *tree_view);
 797 static void     column_sizing_notify                         (GObject            *object,
 798                                                               GParamSpec         *pspec,
 799                                                               gpointer            data);
 800 static void     gtk_tree_view_stop_rubber_band               (GtkTreeView        *tree_view);
 801 static void     update_prelight                              (GtkTreeView        *tree_view,
 802                                                               int                 x,
 803                                                               int                 y);
 804
 805 static inline gint gtk_tree_view_get_effective_header_height (GtkTreeView *tree_view);
 806
 807 static inline gint gtk_tree_view_get_cell_area_y_offset      (GtkTreeView *tree_view,
 808                                                               GtkRBTree   *tree,
 809                                                               GtkRBNode   *node,
 810                                                               gint         vertical_separator);
 811 static inline gint gtk_tree_view_get_cell_area_height        (GtkTreeView *tree_view,
 812                                                               GtkRBNode   *node,
 813                                                               gint         vertical_separator);
 814
 815 static inline gint gtk_tree_view_get_row_y_offset            (GtkTreeView *tree_view,
 816                                                               GtkRBTree   *tree,
 817                                                               GtkRBNode   *node);
 818 static inline gint gtk_tree_view_get_row_height              (GtkTreeView *tree_view,
 819                                                               GtkRBNode   *node);
 820
 821 /* interactive search */
 822 static void     gtk_tree_view_ensure_interactive_directory (GtkTreeView *tree_view);
 823 static void     gtk_tree_view_search_dialog_hide        (GtkWidget        *search_dialog,
 824                                                          GtkTreeView      *tree_view,
 825                                                          GdkDevice        *device);
 826 static void     gtk_tree_view_search_position_func      (GtkTreeView      *tree_view,
 827                                                          GtkWidget        *search_dialog,
 828                                                          gpointer          user_data);
 829 static void     gtk_tree_view_search_disable_popdown    (GtkEntry         *entry,
 830                                                          GtkMenu          *menu,
 831                                                          gpointer          data);
 832 static void     gtk_tree_view_search_preedit_changed    (GtkIMContext     *im_context,
 833                                                          GtkTreeView      *tree_view);
 834 static void     gtk_tree_view_search_activate           (GtkEntry         *entry,
 835                                                          GtkTreeView      *tree_view);
 836 static gboolean gtk_tree_view_real_search_enable_popdown(gpointer          data);
 837 static void     gtk_tree_view_search_enable_popdown     (GtkWidget        *widget,
 838                                                          gpointer          data);
 839 static gboolean gtk_tree_view_search_delete_event       (GtkWidget        *widget,
 840                                                          GdkEventAny      *event,
 841                                                          GtkTreeView      *tree_view);
 842 static gboolean gtk_tree_view_search_button_press_event (GtkWidget        *widget,
 843                                                          GdkEventButton   *event,
 844                                                          GtkTreeView      *tree_view);
 845 static gboolean gtk_tree_view_search_scroll_event       (GtkWidget        *entry,
 846                                                          GdkEventScroll   *event,
 847                                                          GtkTreeView      *tree_view);
 848 static gboolean gtk_tree_view_search_key_press_event    (GtkWidget        *entry,
 849                                                          GdkEventKey      *event,
 850                                                          GtkTreeView      *tree_view);
 851 static gboolean gtk_tree_view_search_move               (GtkWidget        *window,
 852                                                          GtkTreeView      *tree_view,
 853                                                          gboolean          up);
 854 static gboolean gtk_tree_view_search_equal_func         (GtkTreeModel     *model,
 855                                                          gint              column,
 856                                                          const gchar      *key,
 857                                                          GtkTreeIter      *iter,
 858                                                          gpointer          search_data);
 859 static gboolean gtk_tree_view_search_iter               (GtkTreeModel     *model,
 860                                                          GtkTreeSelection *selection,
 861                                                          GtkTreeIter      *iter,
 862                                                          const gchar      *text,
 863                                                          gint             *count,
 864                                                          gint              n);
 865 static void     gtk_tree_view_search_init               (GtkWidget        *entry,
 866                                                          GtkTreeView      *tree_view);
 867 static void     gtk_tree_view_put                       (GtkTreeView      *tree_view,
 868                                                          GtkWidget        *child_widget,
 869                                                          gint              x,
 870                                                          gint              y,
 871                                                          gint              width,
 872                                                          gint              height);
 873 static gboolean gtk_tree_view_start_editing             (GtkTreeView      *tree_view,
 874                                                          GtkTreePath      *cursor_path,
 875                                                          gboolean          edit_only);
 876 static void gtk_tree_view_stop_editing                  (GtkTreeView *tree_view,
 877                                                          gboolean     cancel_editing);
 878 static gboolean gtk_tree_view_real_start_interactive_search (GtkTreeView *tree_view,
 879                                                              GdkDevice   *device,
 880                                                              gboolean     keybinding);
 881 static gboolean gtk_tree_view_start_interactive_search      (GtkTreeView *tree_view);
 882 static GtkTreeViewColumn *gtk_tree_view_get_drop_column (GtkTreeView       *tree_view,
 883                                                          GtkTreeViewColumn *column,
 884                                                          gint               drop_position);
 885
 886 /* GtkBuildable */
 887 static void     gtk_tree_view_buildable_add_child          (GtkBuildable      *tree_view,
 888                                                             GtkBuilder        *builder,
 889                                                             GObject           *child,
 890                                                             const gchar       *type);
 891 static GObject *gtk_tree_view_buildable_get_internal_child (GtkBuildable      *buildable,
 892                                                             GtkBuilder        *builder,
 893                                                             const gchar       *childname);
 894 static void     gtk_tree_view_buildable_init               (GtkBuildableIface *iface);
 895
 896 static GtkAdjustment *gtk_tree_view_do_get_hadjustment (GtkTreeView   *tree_view);
 897 static void           gtk_tree_view_do_set_hadjustment (GtkTreeView   *tree_view,
 898                                                         GtkAdjustment *adjustment);
 899 static GtkAdjustment *gtk_tree_view_do_get_vadjustment (GtkTreeView   *tree_view);
 900 static void           gtk_tree_view_do_set_vadjustment (GtkTreeView   *tree_view,
 901                                                         GtkAdjustment *adjustment);
 902
 903 static gboolean scroll_row_timeout                   (gpointer     data);
 904 static void     add_scroll_timeout                   (GtkTreeView *tree_view);
 905 static void     remove_scroll_timeout                (GtkTreeView *tree_view);
 906
 907 static guint tree_view_signals [LAST_SIGNAL] = { 0 };
 908
 909 \f
 910
 911 /* GType Methods
 912  */
 913
 914 G_DEFINE_TYPE_WITH_CODE (GtkTreeView, gtk_tree_view, GTK_TYPE_CONTAINER,
 915                          G_IMPLEMENT_INTERFACE (GTK_TYPE_BUILDABLE,
 916                                                 gtk_tree_view_buildable_init)
 917                          G_IMPLEMENT_INTERFACE (GTK_TYPE_SCROLLABLE, NULL))
 918
 919 static void
 920 gtk_tree_view_class_init (GtkTreeViewClass *class)
 921 {
 922   GObjectClass *o_class;
 923   GtkWidgetClass *widget_class;
 924   GtkContainerClass *container_class;
 925   GtkBindingSet *binding_set;
 926
 927   binding_set = gtk_binding_set_by_class (class);
 928
 929   o_class = (GObjectClass *) class;
 930   widget_class = (GtkWidgetClass *) class;
 931   container_class = (GtkContainerClass *) class;
 932
 933   /* GObject signals */
 934   o_class->set_property = gtk_tree_view_set_property;
 935   o_class->get_property = gtk_tree_view_get_property;
 936   o_class->finalize = gtk_tree_view_finalize;
 937
 938   /* GtkWidget signals */
 939   widget_class->destroy = gtk_tree_view_destroy;
 940   widget_class->map = gtk_tree_view_map;
 941   widget_class->realize = gtk_tree_view_realize;
 942   widget_class->unrealize = gtk_tree_view_unrealize;
 943   widget_class->get_preferred_width = gtk_tree_view_get_preferred_width;
 944   widget_class->get_preferred_height = gtk_tree_view_get_preferred_height;
 945   widget_class->size_allocate = gtk_tree_view_size_allocate;
 946   widget_class->button_press_event = gtk_tree_view_button_press;
 947   widget_class->button_release_event = gtk_tree_view_button_release;
 948   widget_class->grab_broken_event = gtk_tree_view_grab_broken;
 949   /*widget_class->configure_event = gtk_tree_view_configure;*/
 950   widget_class->motion_notify_event = gtk_tree_view_motion;
 951   widget_class->draw = gtk_tree_view_draw;
 952   widget_class->key_press_event = gtk_tree_view_key_press;
 953   widget_class->key_release_event = gtk_tree_view_key_release;
 954   widget_class->enter_notify_event = gtk_tree_view_enter_notify;
 955   widget_class->leave_notify_event = gtk_tree_view_leave_notify;
 956   widget_class->focus_out_event = gtk_tree_view_focus_out;
 957   widget_class->drag_begin = gtk_tree_view_drag_begin;
 958   widget_class->drag_end = gtk_tree_view_drag_end;
 959   widget_class->drag_data_get = gtk_tree_view_drag_data_get;
 960   widget_class->drag_data_delete = gtk_tree_view_drag_data_delete;
 961   widget_class->drag_leave = gtk_tree_view_drag_leave;
 962   widget_class->drag_motion = gtk_tree_view_drag_motion;
 963   widget_class->drag_drop = gtk_tree_view_drag_drop;
 964   widget_class->drag_data_received = gtk_tree_view_drag_data_received;
 965   widget_class->focus = gtk_tree_view_focus;
 966   widget_class->grab_focus = gtk_tree_view_grab_focus;
 967   widget_class->style_updated = gtk_tree_view_style_updated;
 968   widget_class->grab_notify = gtk_tree_view_grab_notify;
 969   widget_class->state_flags_changed = gtk_tree_view_state_flags_changed;
 970
 971   /* GtkContainer signals */
 972   container_class->remove = gtk_tree_view_remove;
 973   container_class->forall = gtk_tree_view_forall;
 974   container_class->set_focus_child = gtk_tree_view_set_focus_child;
 975   container_class->get_path_for_child = gtk_tree_view_get_path_for_child;
 976
 977   class->move_cursor = gtk_tree_view_real_move_cursor;
 978   class->select_all = gtk_tree_view_real_select_all;
 979   class->unselect_all = gtk_tree_view_real_unselect_all;
 980   class->select_cursor_row = gtk_tree_view_real_select_cursor_row;
 981   class->toggle_cursor_row = gtk_tree_view_real_toggle_cursor_row;
 982   class->expand_collapse_cursor_row = gtk_tree_view_real_expand_collapse_cursor_row;
 983   class->select_cursor_parent = gtk_tree_view_real_select_cursor_parent;
 984   class->start_interactive_search = gtk_tree_view_start_interactive_search;
 985
 986   /* Properties */
 987
 988   g_object_class_install_property (o_class,
 989                                    PROP_MODEL,
 990                                    g_param_spec_object ("model",
 991                                                         P_("TreeView Model"),
 992                                                         P_("The model for the tree view"),
 993                                                         GTK_TYPE_TREE_MODEL,
 994                                                         GTK_PARAM_READWRITE));
 995
 996   g_object_class_override_property (o_class, PROP_HADJUSTMENT,    "hadjustment");
 997   g_object_class_override_property (o_class, PROP_VADJUSTMENT,    "vadjustment");
 998   g_object_class_override_property (o_class, PROP_HSCROLL_POLICY, "hscroll-policy");
 999   g_object_class_override_property (o_class, PROP_VSCROLL_POLICY, "vscroll-policy");
1000
1001   g_object_class_install_property (o_class,
1002                                    PROP_HEADERS_VISIBLE,
1003                                    g_param_spec_boolean ("headers-visible",
1004                                                          P_("Headers Visible"),
1005                                                          P_("Show the column header buttons"),
1006                                                          TRUE,
1007                                                          GTK_PARAM_READWRITE));
1008
1009   g_object_class_install_property (o_class,
1010                                    PROP_HEADERS_CLICKABLE,
1011                                    g_param_spec_boolean ("headers-clickable",
1012                                                          P_("Headers Clickable"),
1013                                                          P_("Column headers respond to click events"),
1014                                                          TRUE,
1015                                                          GTK_PARAM_READWRITE));
1016
1017   g_object_class_install_property (o_class,
1018                                    PROP_EXPANDER_COLUMN,
1019                                    g_param_spec_object ("expander-column",
1020                                                         P_("Expander Column"),
1021                                                         P_("Set the column for the expander column"),
1022                                                         GTK_TYPE_TREE_VIEW_COLUMN,
1023                                                         GTK_PARAM_READWRITE));
1024
1025   g_object_class_install_property (o_class,
1026                                    PROP_REORDERABLE,
1027                                    g_param_spec_boolean ("reorderable",
1028                                                          P_("Reorderable"),
1029                                                          P_("View is reorderable"),
1030                                                          FALSE,
1031                                                          GTK_PARAM_READWRITE));
1032
1033   g_object_class_install_property (o_class,
1034                                    PROP_RULES_HINT,
1035                                    g_param_spec_boolean ("rules-hint",
1036                                                          P_("Rules Hint"),
1037                                                          P_("Set a hint to the theme engine to draw rows in alternating colors"),
1038                                                          FALSE,
1039                                                          GTK_PARAM_READWRITE));
1040
1041     g_object_class_install_property (o_class,
1042                                      PROP_ENABLE_SEARCH,
1043                                      g_param_spec_boolean ("enable-search",
1044                                                            P_("Enable Search"),
1045                                                            P_("View allows user to search through columns interactively"),
1046                                                            TRUE,
1047                                                            GTK_PARAM_READWRITE));
1048
1049     g_object_class_install_property (o_class,
1050                                      PROP_SEARCH_COLUMN,
1051                                      g_param_spec_int ("search-column",
1052                                                        P_("Search Column"),
1053                                                        P_("Model column to search through during interactive search"),
1054                                                        -1,
1055                                                        G_MAXINT,
1056                                                        -1,
1057                                                        GTK_PARAM_READWRITE));
1058
1059     /**
1060      * GtkTreeView:fixed-height-mode:
1061      *
1062      * Setting the ::fixed-height-mode property to %TRUE speeds up
1063      * #GtkTreeView by assuming that all rows have the same height.
1064      * Only enable this option if all rows are the same height.
1065      * Please see gtk_tree_view_set_fixed_height_mode() for more
1066      * information on this option.
1067      *
1068      * Since: 2.4
1069      **/
1070     g_object_class_install_property (o_class,
1071                                      PROP_FIXED_HEIGHT_MODE,
1072                                      g_param_spec_boolean ("fixed-height-mode",
1073                                                            P_("Fixed Height Mode"),
1074                                                            P_("Speeds up GtkTreeView by assuming that all rows have the same height"),
1075                                                            FALSE,
1076                                                            GTK_PARAM_READWRITE));
1077
1078     /**
1079      * GtkTreeView:hover-selection:
1080      *
1081      * Enables or disables the hover selection mode of @tree_view.
1082      * Hover selection makes the selected row follow the pointer.
1083      * Currently, this works only for the selection modes
1084      * %GTK_SELECTION_SINGLE and %GTK_SELECTION_BROWSE.
1085      *
1086      * This mode is primarily intended for treeviews in popups, e.g.
1087      * in #GtkComboBox or #GtkEntryCompletion.
1088      *
1089      * Since: 2.6
1090      */
1091     g_object_class_install_property (o_class,
1092                                      PROP_HOVER_SELECTION,
1093                                      g_param_spec_boolean ("hover-selection",
1094                                                            P_("Hover Selection"),
1095                                                            P_("Whether the selection should follow the pointer"),
1096                                                            FALSE,
1097                                                            GTK_PARAM_READWRITE));
1098
1099     /**
1100      * GtkTreeView:hover-expand:
1101      *
1102      * Enables or disables the hover expansion mode of @tree_view.
1103      * Hover expansion makes rows expand or collapse if the pointer moves
1104      * over them.
1105      *
1106      * This mode is primarily intended for treeviews in popups, e.g.
1107      * in #GtkComboBox or #GtkEntryCompletion.
1108      *
1109      * Since: 2.6
1110      */
1111     g_object_class_install_property (o_class,
1112                                      PROP_HOVER_EXPAND,
1113                                      g_param_spec_boolean ("hover-expand",
1114                                                            P_("Hover Expand"),
1115                                                            P_("Whether rows should be expanded/collapsed when the pointer moves over them"),
1116                                                            FALSE,
1117                                                            GTK_PARAM_READWRITE));
1118
1119     /**
1120      * GtkTreeView:show-expanders:
1121      *
1122      * %TRUE if the view has expanders.
1123      *
1124      * Since: 2.12
1125      */
1126     g_object_class_install_property (o_class,
1127                                      PROP_SHOW_EXPANDERS,
1128                                      g_param_spec_boolean ("show-expanders",
1129                                                            P_("Show Expanders"),
1130                                                            P_("View has expanders"),
1131                                                            TRUE,
1132                                                            GTK_PARAM_READWRITE));
1133
1134     /**
1135      * GtkTreeView:level-indentation:
1136      *
1137      * Extra indentation for each level.
1138      *
1139      * Since: 2.12
1140      */
1141     g_object_class_install_property (o_class,
1142                                      PROP_LEVEL_INDENTATION,
1143                                      g_param_spec_int ("level-indentation",
1144                                                        P_("Level Indentation"),
1145                                                        P_("Extra indentation for each level"),
1146                                                        0,
1147                                                        G_MAXINT,
1148                                                        0,
1149                                                        GTK_PARAM_READWRITE));
1150
1151     g_object_class_install_property (o_class,
1152                                      PROP_RUBBER_BANDING,
1153                                      g_param_spec_boolean ("rubber-banding",
1154                                                            P_("Rubber Banding"),
1155                                                            P_("Whether to enable selection of multiple items by dragging the mouse pointer"),
1156                                                            FALSE,
1157                                                            GTK_PARAM_READWRITE));
1158
1159     g_object_class_install_property (o_class,
1160                                      PROP_ENABLE_GRID_LINES,
1161                                      g_param_spec_enum ("enable-grid-lines",
1162                                                         P_("Enable Grid Lines"),
1163                                                         P_("Whether grid lines should be drawn in the tree view"),
1164                                                         GTK_TYPE_TREE_VIEW_GRID_LINES,
1165                                                         GTK_TREE_VIEW_GRID_LINES_NONE,
1166                                                         GTK_PARAM_READWRITE));
1167
1168     g_object_class_install_property (o_class,
1169                                      PROP_ENABLE_TREE_LINES,
1170                                      g_param_spec_boolean ("enable-tree-lines",
1171                                                            P_("Enable Tree Lines"),
1172                                                            P_("Whether tree lines should be drawn in the tree view"),
1173                                                            FALSE,
1174                                                            GTK_PARAM_READWRITE));
1175
1176     g_object_class_install_property (o_class,
1177                                      PROP_TOOLTIP_COLUMN,
1178                                      g_param_spec_int ("tooltip-column",
1179                                                        P_("Tooltip Column"),
1180                                                        P_("The column in the model containing the tooltip texts for the rows"),
1181                                                        -1,
1182                                                        G_MAXINT,
1183                                                        -1,
1184                                                        GTK_PARAM_READWRITE));
1185
1186   /* Style properties */
1187 #define _TREE_VIEW_EXPANDER_SIZE 14
1188 #define _TREE_VIEW_VERTICAL_SEPARATOR 2
1189 #define _TREE_VIEW_HORIZONTAL_SEPARATOR 2
1190
1191   gtk_widget_class_install_style_property (widget_class,
1192                                            g_param_spec_int ("expander-size",
1193                                                              P_("Expander Size"),
1194                                                              P_("Size of the expander arrow"),
1195                                                              0,
1196                                                              G_MAXINT,
1197                                                              _TREE_VIEW_EXPANDER_SIZE,
1198                                                              GTK_PARAM_READABLE));
1199
1200   gtk_widget_class_install_style_property (widget_class,
1201                                            g_param_spec_int ("vertical-separator",
1202                                                              P_("Vertical Separator Width"),
1203                                                              P_("Vertical space between cells.  Must be an even number"),
1204                                                              0,
1205                                                              G_MAXINT,
1206                                                              _TREE_VIEW_VERTICAL_SEPARATOR,
1207                                                              GTK_PARAM_READABLE));
1208
1209   gtk_widget_class_install_style_property (widget_class,
1210                                            g_param_spec_int ("horizontal-separator",
1211                                                              P_("Horizontal Separator Width"),
1212                                                              P_("Horizontal space between cells.  Must be an even number"),
1213                                                              0,
1214                                                              G_MAXINT,
1215                                                              _TREE_VIEW_HORIZONTAL_SEPARATOR,
1216                                                              GTK_PARAM_READABLE));
1217
1218   gtk_widget_class_install_style_property (widget_class,
1219                                            g_param_spec_boolean ("allow-rules",
1220                                                                  P_("Allow Rules"),
1221                                                                  P_("Allow drawing of alternating color rows"),
1222                                                                  TRUE,
1223                                                                  GTK_PARAM_READABLE));
1224
1225   gtk_widget_class_install_style_property (widget_class,
1226                                            g_param_spec_boolean ("indent-expanders",
1227                                                                  P_("Indent Expanders"),
1228                                                                  P_("Make the expanders indented"),
1229                                                                  TRUE,
1230                                                                  GTK_PARAM_READABLE));
1231
1232   gtk_widget_class_install_style_property (widget_class,
1233                                            g_param_spec_boxed ("even-row-color",
1234                                                                P_("Even Row Color"),
1235                                                                P_("Color to use for even rows"),
1236                                                                GDK_TYPE_COLOR,
1237                                                                GTK_PARAM_READABLE));
1238
1239   gtk_widget_class_install_style_property (widget_class,
1240                                            g_param_spec_boxed ("odd-row-color",
1241                                                                P_("Odd Row Color"),
1242                                                                P_("Color to use for odd rows"),
1243                                                                GDK_TYPE_COLOR,
1244                                                                GTK_PARAM_READABLE));
1245
1246   gtk_widget_class_install_style_property (widget_class,
1247                                            g_param_spec_int ("grid-line-width",
1248                                                              P_("Grid line width"),
1249                                                              P_("Width, in pixels, of the tree view grid lines"),
1250                                                              0, G_MAXINT, 1,
1251                                                              GTK_PARAM_READABLE));
1252
1253   gtk_widget_class_install_style_property (widget_class,
1254                                            g_param_spec_int ("tree-line-width",
1255                                                              P_("Tree line width"),
1256                                                              P_("Width, in pixels, of the tree view lines"),
1257                                                              0, G_MAXINT, 1,
1258                                                              GTK_PARAM_READABLE));
1259
1260   gtk_widget_class_install_style_property (widget_class,
1261                                            g_param_spec_string ("grid-line-pattern",
1262                                                                 P_("Grid line pattern"),
1263                                                                 P_("Dash pattern used to draw the tree view grid lines"),
1264                                                                 "\1\1",
1265                                                                 GTK_PARAM_READABLE));
1266
1267   gtk_widget_class_install_style_property (widget_class,
1268                                            g_param_spec_string ("tree-line-pattern",
1269                                                                 P_("Tree line pattern"),
1270                                                                 P_("Dash pattern used to draw the tree view lines"),
1271                                                                 "\1\1",
1272                                                                 GTK_PARAM_READABLE));
1273
1274   /* Signals */
1275   /**
1276    * GtkTreeView::row-activated:
1277    * @tree_view: the object on which the signal is emitted
1278    * @path: the #GtkTreePath for the activated row
1279    * @column: the #GtkTreeViewColumn in which the activation occurred
1280    *
1281    * The "row-activated" signal is emitted when the method
1282    * gtk_tree_view_row_activated() is called or the user double clicks
1283    * a treeview row. It is also emitted when a non-editable row is
1284    * selected and one of the keys: Space, Shift+Space, Return or
1285    * Enter is pressed.
1286    *
1287    * For selection handling refer to the <link linkend="TreeWidget">tree
1288    * widget conceptual overview</link> as well as #GtkTreeSelection.
1289    */
1290   tree_view_signals[ROW_ACTIVATED] =
1291     g_signal_new (I_("row-activated"),
1292                   G_TYPE_FROM_CLASS (o_class),
1293                   G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
1294                   G_STRUCT_OFFSET (GtkTreeViewClass, row_activated),
1295                   NULL, NULL,
1296                   _gtk_marshal_VOID__BOXED_OBJECT,
1297                   G_TYPE_NONE, 2,
1298                   GTK_TYPE_TREE_PATH,
1299                   GTK_TYPE_TREE_VIEW_COLUMN);
1300
1301   /**
1302    * GtkTreeView::test-expand-row:
1303    * @tree_view: the object on which the signal is emitted
1304    * @iter: the tree iter of the row to expand
1305    * @path: a tree path that points to the row
1306    *
1307    * The given row is about to be expanded (show its children nodes). Use this
1308    * signal if you need to control the expandability of individual rows.
1309    *
1310    * Returns: %FALSE to allow expansion, %TRUE to reject
1311    */
1312   tree_view_signals[TEST_EXPAND_ROW] =
1313     g_signal_new (I_("test-expand-row"),
1314                   G_TYPE_FROM_CLASS (o_class),
1315                   G_SIGNAL_RUN_LAST,
1316                   G_STRUCT_OFFSET (GtkTreeViewClass, test_expand_row),
1317                   _gtk_boolean_handled_accumulator, NULL,
1318                   _gtk_marshal_BOOLEAN__BOXED_BOXED,
1319                   G_TYPE_BOOLEAN, 2,
1320                   GTK_TYPE_TREE_ITER,
1321                   GTK_TYPE_TREE_PATH);
1322
1323   /**
1324    * GtkTreeView::test-collapse-row:
1325    * @tree_view: the object on which the signal is emitted
1326    * @iter: the tree iter of the row to collapse
1327    * @path: a tree path that points to the row
1328    *
1329    * The given row is about to be collapsed (hide its children nodes). Use this
1330    * signal if you need to control the collapsibility of individual rows.
1331    *
1332    * Returns: %FALSE to allow collapsing, %TRUE to reject
1333    */
1334   tree_view_signals[TEST_COLLAPSE_ROW] =
1335     g_signal_new (I_("test-collapse-row"),
1336                   G_TYPE_FROM_CLASS (o_class),
1337                   G_SIGNAL_RUN_LAST,
1338                   G_STRUCT_OFFSET (GtkTreeViewClass, test_collapse_row),
1339                   _gtk_boolean_handled_accumulator, NULL,
1340                   _gtk_marshal_BOOLEAN__BOXED_BOXED,
1341                   G_TYPE_BOOLEAN, 2,
1342                   GTK_TYPE_TREE_ITER,
1343                   GTK_TYPE_TREE_PATH);
1344
1345   /**
1346    * GtkTreeView::row-expanded:
1347    * @tree_view: the object on which the signal is emitted
1348    * @iter: the tree iter of the expanded row
1349    * @path: a tree path that points to the row
1350    *
1351    * The given row has been expanded (child nodes are shown).
1352    */
1353   tree_view_signals[ROW_EXPANDED] =
1354     g_signal_new (I_("row-expanded"),
1355                   G_TYPE_FROM_CLASS (o_class),
1356                   G_SIGNAL_RUN_LAST,
1357                   G_STRUCT_OFFSET (GtkTreeViewClass, row_expanded),
1358                   NULL, NULL,
1359                   _gtk_marshal_VOID__BOXED_BOXED,
1360                   G_TYPE_NONE, 2,
1361                   GTK_TYPE_TREE_ITER,
1362                   GTK_TYPE_TREE_PATH);
1363
1364   /**
1365    * GtkTreeView::row-collapsed:
1366    * @tree_view: the object on which the signal is emitted
1367    * @iter: the tree iter of the collapsed row
1368    * @path: a tree path that points to the row
1369    *
1370    * The given row has been collapsed (child nodes are hidden).
1371    */
1372   tree_view_signals[ROW_COLLAPSED] =
1373     g_signal_new (I_("row-collapsed"),
1374                   G_TYPE_FROM_CLASS (o_class),
1375                   G_SIGNAL_RUN_LAST,
1376                   G_STRUCT_OFFSET (GtkTreeViewClass, row_collapsed),
1377                   NULL, NULL,
1378                   _gtk_marshal_VOID__BOXED_BOXED,
1379                   G_TYPE_NONE, 2,
1380                   GTK_TYPE_TREE_ITER,
1381                   GTK_TYPE_TREE_PATH);
1382
1383   /**
1384    * GtkTreeView::columns-changed:
1385    * @tree_view: the object on which the signal is emitted
1386    *
1387    * The number of columns of the treeview has changed.
1388    */
1389   tree_view_signals[COLUMNS_CHANGED] =
1390     g_signal_new (I_("columns-changed"),
1391                   G_TYPE_FROM_CLASS (o_class),
1392                   G_SIGNAL_RUN_LAST,
1393                   G_STRUCT_OFFSET (GtkTreeViewClass, columns_changed),
1394                   NULL, NULL,
1395                   _gtk_marshal_VOID__VOID,
1396                   G_TYPE_NONE, 0);
1397
1398   /**
1399    * GtkTreeView::cursor-changed:
1400    * @tree_view: the object on which the signal is emitted
1401    *
1402    * The position of the cursor (focused cell) has changed.
1403    */
1404   tree_view_signals[CURSOR_CHANGED] =
1405     g_signal_new (I_("cursor-changed"),
1406                   G_TYPE_FROM_CLASS (o_class),
1407                   G_SIGNAL_RUN_LAST,
1408                   G_STRUCT_OFFSET (GtkTreeViewClass, cursor_changed),
1409                   NULL, NULL,
1410                   _gtk_marshal_VOID__VOID,
1411                   G_TYPE_NONE, 0);
1412
1413   tree_view_signals[MOVE_CURSOR] =
1414     g_signal_new (I_("move-cursor"),
1415                   G_TYPE_FROM_CLASS (o_class),
1416                   G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
1417                   G_STRUCT_OFFSET (GtkTreeViewClass, move_cursor),
1418                   NULL, NULL,
1419                   _gtk_marshal_BOOLEAN__ENUM_INT,
1420                   G_TYPE_BOOLEAN, 2,
1421                   GTK_TYPE_MOVEMENT_STEP,
1422                   G_TYPE_INT);
1423
1424   tree_view_signals[SELECT_ALL] =
1425     g_signal_new (I_("select-all"),
1426                   G_TYPE_FROM_CLASS (o_class),
1427                   G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
1428                   G_STRUCT_OFFSET (GtkTreeViewClass, select_all),
1429                   NULL, NULL,
1430                   _gtk_marshal_BOOLEAN__VOID,
1431                   G_TYPE_BOOLEAN, 0);
1432
1433   tree_view_signals[UNSELECT_ALL] =
1434     g_signal_new (I_("unselect-all"),
1435                   G_TYPE_FROM_CLASS (o_class),
1436                   G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
1437                   G_STRUCT_OFFSET (GtkTreeViewClass, unselect_all),
1438                   NULL, NULL,
1439                   _gtk_marshal_BOOLEAN__VOID,
1440                   G_TYPE_BOOLEAN, 0);
1441
1442   tree_view_signals[SELECT_CURSOR_ROW] =
1443     g_signal_new (I_("select-cursor-row"),
1444                   G_TYPE_FROM_CLASS (o_class),
1445                   G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
1446                   G_STRUCT_OFFSET (GtkTreeViewClass, select_cursor_row),
1447                   NULL, NULL,
1448                   _gtk_marshal_BOOLEAN__BOOLEAN,
1449                   G_TYPE_BOOLEAN, 1,
1450                   G_TYPE_BOOLEAN);
1451
1452   tree_view_signals[TOGGLE_CURSOR_ROW] =
1453     g_signal_new (I_("toggle-cursor-row"),
1454                   G_TYPE_FROM_CLASS (o_class),
1455                   G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
1456                   G_STRUCT_OFFSET (GtkTreeViewClass, toggle_cursor_row),
1457                   NULL, NULL,
1458                   _gtk_marshal_BOOLEAN__VOID,
1459                   G_TYPE_BOOLEAN, 0);
1460
1461   tree_view_signals[EXPAND_COLLAPSE_CURSOR_ROW] =
1462     g_signal_new (I_("expand-collapse-cursor-row"),
1463                   G_TYPE_FROM_CLASS (o_class),
1464                   G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
1465                   G_STRUCT_OFFSET (GtkTreeViewClass, expand_collapse_cursor_row),
1466                   NULL, NULL,
1467                   _gtk_marshal_BOOLEAN__BOOLEAN_BOOLEAN_BOOLEAN,
1468                   G_TYPE_BOOLEAN, 3,
1469                   G_TYPE_BOOLEAN,
1470                   G_TYPE_BOOLEAN,
1471                   G_TYPE_BOOLEAN);
1472
1473   tree_view_signals[SELECT_CURSOR_PARENT] =
1474     g_signal_new (I_("select-cursor-parent"),
1475                   G_TYPE_FROM_CLASS (o_class),
1476                   G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
1477                   G_STRUCT_OFFSET (GtkTreeViewClass, select_cursor_parent),
1478                   NULL, NULL,
1479                   _gtk_marshal_BOOLEAN__VOID,
1480                   G_TYPE_BOOLEAN, 0);
1481
1482   tree_view_signals[START_INTERACTIVE_SEARCH] =
1483     g_signal_new (I_("start-interactive-search"),
1484                   G_TYPE_FROM_CLASS (o_class),
1485                   G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
1486                   G_STRUCT_OFFSET (GtkTreeViewClass, start_interactive_search),
1487                   NULL, NULL,
1488                   _gtk_marshal_BOOLEAN__VOID,
1489                   G_TYPE_BOOLEAN, 0);
1490
1491   /* Key bindings */
1492   gtk_tree_view_add_move_binding (binding_set, GDK_KEY_Up, 0, TRUE,
1493                                   GTK_MOVEMENT_DISPLAY_LINES, -1);
1494   gtk_tree_view_add_move_binding (binding_set, GDK_KEY_KP_Up, 0, TRUE,
1495                                   GTK_MOVEMENT_DISPLAY_LINES, -1);
1496
1497   gtk_tree_view_add_move_binding (binding_set, GDK_KEY_Down, 0, TRUE,
1498                                   GTK_MOVEMENT_DISPLAY_LINES, 1);
1499   gtk_tree_view_add_move_binding (binding_set, GDK_KEY_KP_Down, 0, TRUE,
1500                                   GTK_MOVEMENT_DISPLAY_LINES, 1);
1501
1502   gtk_tree_view_add_move_binding (binding_set, GDK_KEY_p, GDK_CONTROL_MASK, FALSE,
1503                                   GTK_MOVEMENT_DISPLAY_LINES, -1);
1504
1505   gtk_tree_view_add_move_binding (binding_set, GDK_KEY_n, GDK_CONTROL_MASK, FALSE,
1506                                   GTK_MOVEMENT_DISPLAY_LINES, 1);
1507
1508   gtk_tree_view_add_move_binding (binding_set, GDK_KEY_Home, 0, TRUE,
1509                                   GTK_MOVEMENT_BUFFER_ENDS, -1);
1510   gtk_tree_view_add_move_binding (binding_set, GDK_KEY_KP_Home, 0, TRUE,
1511                                   GTK_MOVEMENT_BUFFER_ENDS, -1);
1512
1513   gtk_tree_view_add_move_binding (binding_set, GDK_KEY_End, 0, TRUE,
1514                                   GTK_MOVEMENT_BUFFER_ENDS, 1);
1515   gtk_tree_view_add_move_binding (binding_set, GDK_KEY_KP_End, 0, TRUE,
1516                                   GTK_MOVEMENT_BUFFER_ENDS, 1);
1517
1518   gtk_tree_view_add_move_binding (binding_set, GDK_KEY_Page_Up, 0, TRUE,
1519                                   GTK_MOVEMENT_PAGES, -1);
1520   gtk_tree_view_add_move_binding (binding_set, GDK_KEY_KP_Page_Up, 0, TRUE,
1521                                   GTK_MOVEMENT_PAGES, -1);
1522
1523   gtk_tree_view_add_move_binding (binding_set, GDK_KEY_Page_Down, 0, TRUE,
1524                                   GTK_MOVEMENT_PAGES, 1);
1525   gtk_tree_view_add_move_binding (binding_set, GDK_KEY_KP_Page_Down, 0, TRUE,
1526                                   GTK_MOVEMENT_PAGES, 1);
1527
1528
1529   gtk_binding_entry_add_signal (binding_set, GDK_KEY_Right, 0, "move-cursor", 2,
1530                                 G_TYPE_ENUM, GTK_MOVEMENT_VISUAL_POSITIONS,
1531                                 G_TYPE_INT, 1);
1532
1533   gtk_binding_entry_add_signal (binding_set, GDK_KEY_Left, 0, "move-cursor", 2,
1534                                 G_TYPE_ENUM, GTK_MOVEMENT_VISUAL_POSITIONS,
1535                                 G_TYPE_INT, -1);
1536
1537   gtk_binding_entry_add_signal (binding_set, GDK_KEY_KP_Right, 0, "move-cursor", 2,
1538                                 G_TYPE_ENUM, GTK_MOVEMENT_VISUAL_POSITIONS,
1539                                 G_TYPE_INT, 1);
1540
1541   gtk_binding_entry_add_signal (binding_set, GDK_KEY_KP_Left, 0, "move-cursor", 2,
1542                                 G_TYPE_ENUM, GTK_MOVEMENT_VISUAL_POSITIONS,
1543                                 G_TYPE_INT, -1);
1544
1545   gtk_binding_entry_add_signal (binding_set, GDK_KEY_Right, GDK_CONTROL_MASK,
1546                                 "move-cursor", 2,
1547                                 G_TYPE_ENUM, GTK_MOVEMENT_VISUAL_POSITIONS,
1548                                 G_TYPE_INT, 1);
1549
1550   gtk_binding_entry_add_signal (binding_set, GDK_KEY_Left, GDK_CONTROL_MASK,
1551                                 "move-cursor", 2,
1552                                 G_TYPE_ENUM, GTK_MOVEMENT_VISUAL_POSITIONS,
1553                                 G_TYPE_INT, -1);
1554
1555   gtk_binding_entry_add_signal (binding_set, GDK_KEY_KP_Right, GDK_CONTROL_MASK,
1556                                 "move-cursor", 2,
1557                                 G_TYPE_ENUM, GTK_MOVEMENT_VISUAL_POSITIONS,
1558                                 G_TYPE_INT, 1);
1559
1560   gtk_binding_entry_add_signal (binding_set, GDK_KEY_KP_Left, GDK_CONTROL_MASK,
1561                                 "move-cursor", 2,
1562                                 G_TYPE_ENUM, GTK_MOVEMENT_VISUAL_POSITIONS,
1563                                 G_TYPE_INT, -1);
1564
1565   gtk_binding_entry_add_signal (binding_set, GDK_KEY_space, GDK_CONTROL_MASK, "toggle-cursor-row", 0);
1566   gtk_binding_entry_add_signal (binding_set, GDK_KEY_KP_Space, GDK_CONTROL_MASK, "toggle-cursor-row", 0);
1567
1568   gtk_binding_entry_add_signal (binding_set, GDK_KEY_a, GDK_CONTROL_MASK, "select-all", 0);
1569   gtk_binding_entry_add_signal (binding_set, GDK_KEY_slash, GDK_CONTROL_MASK, "select-all", 0);
1570
1571   gtk_binding_entry_add_signal (binding_set, GDK_KEY_A, GDK_CONTROL_MASK | GDK_SHIFT_MASK, "unselect-all", 0);
1572   gtk_binding_entry_add_signal (binding_set, GDK_KEY_backslash, GDK_CONTROL_MASK, "unselect-all", 0);
1573
1574   gtk_binding_entry_add_signal (binding_set, GDK_KEY_space, GDK_SHIFT_MASK, "select-cursor-row", 1,
1575                                 G_TYPE_BOOLEAN, TRUE);
1576   gtk_binding_entry_add_signal (binding_set, GDK_KEY_KP_Space, GDK_SHIFT_MASK, "select-cursor-row", 1,
1577                                 G_TYPE_BOOLEAN, TRUE);
1578
1579   gtk_binding_entry_add_signal (binding_set, GDK_KEY_space, 0, "select-cursor-row", 1,
1580                                 G_TYPE_BOOLEAN, TRUE);
1581   gtk_binding_entry_add_signal (binding_set, GDK_KEY_KP_Space, 0, "select-cursor-row", 1,
1582                                 G_TYPE_BOOLEAN, TRUE);
1583   gtk_binding_entry_add_signal (binding_set, GDK_KEY_Return, 0, "select-cursor-row", 1,
1584                                 G_TYPE_BOOLEAN, TRUE);
1585   gtk_binding_entry_add_signal (binding_set, GDK_KEY_ISO_Enter, 0, "select-cursor-row", 1,
1586                                 G_TYPE_BOOLEAN, TRUE);
1587   gtk_binding_entry_add_signal (binding_set, GDK_KEY_KP_Enter, 0, "select-cursor-row", 1,
1588                                 G_TYPE_BOOLEAN, TRUE);
1589
1590   /* expand and collapse rows */
1591   gtk_binding_entry_add_signal (binding_set, GDK_KEY_plus, 0, "expand-collapse-cursor-row", 3,
1592                                 G_TYPE_BOOLEAN, TRUE,
1593                                 G_TYPE_BOOLEAN, TRUE,
1594                                 G_TYPE_BOOLEAN, FALSE);
1595
1596   gtk_binding_entry_add_signal (binding_set, GDK_KEY_asterisk, 0,
1597                                 "expand-collapse-cursor-row", 3,
1598                                 G_TYPE_BOOLEAN, TRUE,
1599                                 G_TYPE_BOOLEAN, TRUE,
1600                                 G_TYPE_BOOLEAN, TRUE);
1601   gtk_binding_entry_add_signal (binding_set, GDK_KEY_KP_Multiply, 0,
1602                                 "expand-collapse-cursor-row", 3,
1603                                 G_TYPE_BOOLEAN, TRUE,
1604                                 G_TYPE_BOOLEAN, TRUE,
1605                                 G_TYPE_BOOLEAN, TRUE);
1606
1607   gtk_binding_entry_add_signal (binding_set, GDK_KEY_slash, 0,
1608                                 "expand-collapse-cursor-row", 3,
1609                                 G_TYPE_BOOLEAN, TRUE,
1610                                 G_TYPE_BOOLEAN, FALSE,
1611                                 G_TYPE_BOOLEAN, FALSE);
1612   gtk_binding_entry_add_signal (binding_set, GDK_KEY_KP_Divide, 0,
1613                                 "expand-collapse-cursor-row", 3,
1614                                 G_TYPE_BOOLEAN, TRUE,
1615                                 G_TYPE_BOOLEAN, FALSE,
1616                                 G_TYPE_BOOLEAN, FALSE);
1617
1618   /* Not doable on US keyboards */
1619   gtk_binding_entry_add_signal (binding_set, GDK_KEY_plus, GDK_SHIFT_MASK, "expand-collapse-cursor-row", 3,
1620                                 G_TYPE_BOOLEAN, TRUE,
1621                                 G_TYPE_BOOLEAN, TRUE,
1622                                 G_TYPE_BOOLEAN, TRUE);
1623   gtk_binding_entry_add_signal (binding_set, GDK_KEY_KP_Add, 0, "expand-collapse-cursor-row", 3,
1624                                 G_TYPE_BOOLEAN, TRUE,
1625                                 G_TYPE_BOOLEAN, TRUE,
1626                                 G_TYPE_BOOLEAN, FALSE);
1627   gtk_binding_entry_add_signal (binding_set, GDK_KEY_KP_Add, GDK_SHIFT_MASK, "expand-collapse-cursor-row", 3,
1628                                 G_TYPE_BOOLEAN, TRUE,
1629                                 G_TYPE_BOOLEAN, TRUE,
1630                                 G_TYPE_BOOLEAN, TRUE);
1631   gtk_binding_entry_add_signal (binding_set, GDK_KEY_KP_Add, GDK_SHIFT_MASK, "expand-collapse-cursor-row", 3,
1632                                 G_TYPE_BOOLEAN, TRUE,
1633                                 G_TYPE_BOOLEAN, TRUE,
1634                                 G_TYPE_BOOLEAN, TRUE);
1635   gtk_binding_entry_add_signal (binding_set, GDK_KEY_Right, GDK_SHIFT_MASK,
1636                                 "expand-collapse-cursor-row", 3,
1637                                 G_TYPE_BOOLEAN, FALSE,
1638                                 G_TYPE_BOOLEAN, TRUE,
1639                                 G_TYPE_BOOLEAN, TRUE);
1640   gtk_binding_entry_add_signal (binding_set, GDK_KEY_KP_Right, GDK_SHIFT_MASK,
1641                                 "expand-collapse-cursor-row", 3,
1642                                 G_TYPE_BOOLEAN, FALSE,
1643                                 G_TYPE_BOOLEAN, TRUE,
1644                                 G_TYPE_BOOLEAN, TRUE);
1645   gtk_binding_entry_add_signal (binding_set, GDK_KEY_Right,
1646                                 GDK_CONTROL_MASK | GDK_SHIFT_MASK,
1647                                 "expand-collapse-cursor-row", 3,
1648                                 G_TYPE_BOOLEAN, FALSE,
1649                                 G_TYPE_BOOLEAN, TRUE,
1650                                 G_TYPE_BOOLEAN, TRUE);
1651   gtk_binding_entry_add_signal (binding_set, GDK_KEY_KP_Right,
1652                                 GDK_CONTROL_MASK | GDK_SHIFT_MASK,
1653                                 "expand-collapse-cursor-row", 3,
1654                                 G_TYPE_BOOLEAN, FALSE,
1655                                 G_TYPE_BOOLEAN, TRUE,
1656                                 G_TYPE_BOOLEAN, TRUE);
1657
1658   gtk_binding_entry_add_signal (binding_set, GDK_KEY_minus, 0, "expand-collapse-cursor-row", 3,
1659                                 G_TYPE_BOOLEAN, TRUE,
1660                                 G_TYPE_BOOLEAN, FALSE,
1661                                 G_TYPE_BOOLEAN, FALSE);
1662   gtk_binding_entry_add_signal (binding_set, GDK_KEY_minus, GDK_SHIFT_MASK, "expand-collapse-cursor-row", 3,
1663                                 G_TYPE_BOOLEAN, TRUE,
1664                                 G_TYPE_BOOLEAN, FALSE,
1665                                 G_TYPE_BOOLEAN, TRUE);
1666   gtk_binding_entry_add_signal (binding_set, GDK_KEY_KP_Subtract, 0, "expand-collapse-cursor-row", 3,
1667                                 G_TYPE_BOOLEAN, TRUE,
1668                                 G_TYPE_BOOLEAN, FALSE,
1669                                 G_TYPE_BOOLEAN, FALSE);
1670   gtk_binding_entry_add_signal (binding_set, GDK_KEY_KP_Subtract, GDK_SHIFT_MASK, "expand-collapse-cursor-row", 3,
1671                                 G_TYPE_BOOLEAN, TRUE,
1672                                 G_TYPE_BOOLEAN, FALSE,
1673                                 G_TYPE_BOOLEAN, TRUE);
1674   gtk_binding_entry_add_signal (binding_set, GDK_KEY_Left, GDK_SHIFT_MASK,
1675                                 "expand-collapse-cursor-row", 3,
1676                                 G_TYPE_BOOLEAN, FALSE,
1677                                 G_TYPE_BOOLEAN, FALSE,
1678                                 G_TYPE_BOOLEAN, TRUE);
1679   gtk_binding_entry_add_signal (binding_set, GDK_KEY_KP_Left, GDK_SHIFT_MASK,
1680                                 "expand-collapse-cursor-row", 3,
1681                                 G_TYPE_BOOLEAN, FALSE,
1682                                 G_TYPE_BOOLEAN, FALSE,
1683                                 G_TYPE_BOOLEAN, TRUE);
1684   gtk_binding_entry_add_signal (binding_set, GDK_KEY_Left,
1685                                 GDK_CONTROL_MASK | GDK_SHIFT_MASK,
1686                                 "expand-collapse-cursor-row", 3,
1687                                 G_TYPE_BOOLEAN, FALSE,
1688                                 G_TYPE_BOOLEAN, FALSE,
1689                                 G_TYPE_BOOLEAN, TRUE);
1690   gtk_binding_entry_add_signal (binding_set, GDK_KEY_KP_Left,
1691                                 GDK_CONTROL_MASK | GDK_SHIFT_MASK,
1692                                 "expand-collapse-cursor-row", 3,
1693                                 G_TYPE_BOOLEAN, FALSE,
1694                                 G_TYPE_BOOLEAN, FALSE,
1695                                 G_TYPE_BOOLEAN, TRUE);
1696
1697   gtk_binding_entry_add_signal (binding_set, GDK_KEY_BackSpace, 0, "select-cursor-parent", 0);
1698   gtk_binding_entry_add_signal (binding_set, GDK_KEY_BackSpace, GDK_CONTROL_MASK, "select-cursor-parent", 0);
1699
1700   gtk_binding_entry_add_signal (binding_set, GDK_KEY_f, GDK_CONTROL_MASK, "start-interactive-search", 0);
1701
1702   gtk_binding_entry_add_signal (binding_set, GDK_KEY_F, GDK_CONTROL_MASK, "start-interactive-search", 0);
1703
1704   g_type_class_add_private (o_class, sizeof (GtkTreeViewPrivate));
1705
1706   gtk_widget_class_set_accessible_type (widget_class, GTK_TYPE_TREE_VIEW_ACCESSIBLE);
1707 }
1708
1709 static void
1710 gtk_tree_view_init (GtkTreeView *tree_view)
1711 {
1712   tree_view->priv = G_TYPE_INSTANCE_GET_PRIVATE (tree_view, GTK_TYPE_TREE_VIEW, GtkTreeViewPrivate);
1713
1714   gtk_widget_set_can_focus (GTK_WIDGET (tree_view), TRUE);
1715   gtk_widget_set_redraw_on_allocate (GTK_WIDGET (tree_view), FALSE);
1716
1717   tree_view->priv->show_expanders = TRUE;
1718   tree_view->priv->draw_keyfocus = TRUE;
1719   tree_view->priv->headers_visible = TRUE;
1720
1721   /* We need some padding */
1722   tree_view->priv->dy = 0;
1723   tree_view->priv->cursor_offset = 0;
1724   tree_view->priv->n_columns = 0;
1725   tree_view->priv->header_height = 1;
1726   tree_view->priv->x_drag = 0;
1727   tree_view->priv->drag_pos = -1;
1728   tree_view->priv->header_has_focus = FALSE;
1729   tree_view->priv->pressed_button = -1;
1730   tree_view->priv->press_start_x = -1;
1731   tree_view->priv->press_start_y = -1;
1732   tree_view->priv->reorderable = FALSE;
1733   tree_view->priv->presize_handler_timer = 0;
1734   tree_view->priv->scroll_sync_timer = 0;
1735   tree_view->priv->fixed_height = -1;
1736   tree_view->priv->fixed_height_mode = FALSE;
1737   tree_view->priv->fixed_height_check = 0;
1738   tree_view->priv->selection = _gtk_tree_selection_new_with_tree_view (tree_view);
1739   tree_view->priv->enable_search = TRUE;
1740   tree_view->priv->search_column = -1;
1741   tree_view->priv->search_position_func = gtk_tree_view_search_position_func;
1742   tree_view->priv->search_equal_func = gtk_tree_view_search_equal_func;
1743   tree_view->priv->search_custom_entry_set = FALSE;
1744   tree_view->priv->typeselect_flush_timeout = 0;
1745   tree_view->priv->init_hadjust_value = TRUE;
1746   tree_view->priv->width = 0;
1747
1748   tree_view->priv->hover_selection = FALSE;
1749   tree_view->priv->hover_expand = FALSE;
1750
1751   tree_view->priv->level_indentation = 0;
1752
1753   tree_view->priv->rubber_banding_enable = FALSE;
1754
1755   tree_view->priv->grid_lines = GTK_TREE_VIEW_GRID_LINES_NONE;
1756   tree_view->priv->tree_lines_enabled = FALSE;
1757
1758   tree_view->priv->tooltip_column = -1;
1759
1760   tree_view->priv->post_validation_flag = FALSE;
1761
1762   tree_view->priv->last_button_x = -1;
1763   tree_view->priv->last_button_y = -1;
1764
1765   tree_view->priv->event_last_x = -10000;
1766   tree_view->priv->event_last_y = -10000;
1767
1768   gtk_tree_view_do_set_vadjustment (tree_view, NULL);
1769   gtk_tree_view_do_set_hadjustment (tree_view, NULL);
1770 }
1771
1772 \f
1773
1774 /* GObject Methods
1775  */
1776
1777 static void
1778 gtk_tree_view_set_property (GObject         *object,
1779                             guint            prop_id,
1780                             const GValue    *value,
1781                             GParamSpec      *pspec)
1782 {
1783   GtkTreeView *tree_view;
1784
1785   tree_view = GTK_TREE_VIEW (object);
1786
1787   switch (prop_id)
1788     {
1789     case PROP_MODEL:
1790       gtk_tree_view_set_model (tree_view, g_value_get_object (value));
1791       break;
1792     case PROP_HADJUSTMENT:
1793       gtk_tree_view_do_set_hadjustment (tree_view, g_value_get_object (value));
1794       break;
1795     case PROP_VADJUSTMENT:
1796       gtk_tree_view_do_set_vadjustment (tree_view, g_value_get_object (value));
1797       break;
1798     case PROP_HSCROLL_POLICY:
1799       tree_view->priv->hscroll_policy = g_value_get_enum (value);
1800       gtk_widget_queue_resize (GTK_WIDGET (tree_view));
1801       break;
1802     case PROP_VSCROLL_POLICY:
1803       tree_view->priv->vscroll_policy = g_value_get_enum (value);
1804       gtk_widget_queue_resize (GTK_WIDGET (tree_view));
1805       break;
1806     case PROP_HEADERS_VISIBLE:
1807       gtk_tree_view_set_headers_visible (tree_view, g_value_get_boolean (value));
1808       break;
1809     case PROP_HEADERS_CLICKABLE:
1810       gtk_tree_view_set_headers_clickable (tree_view, g_value_get_boolean (value));
1811       break;
1812     case PROP_EXPANDER_COLUMN:
1813       gtk_tree_view_set_expander_column (tree_view, g_value_get_object (value));
1814       break;
1815     case PROP_REORDERABLE:
1816       gtk_tree_view_set_reorderable (tree_view, g_value_get_boolean (value));
1817       break;
1818     case PROP_RULES_HINT:
1819       gtk_tree_view_set_rules_hint (tree_view, g_value_get_boolean (value));
1820       break;
1821     case PROP_ENABLE_SEARCH:
1822       gtk_tree_view_set_enable_search (tree_view, g_value_get_boolean (value));
1823       break;
1824     case PROP_SEARCH_COLUMN:
1825       gtk_tree_view_set_search_column (tree_view, g_value_get_int (value));
1826       break;
1827     case PROP_FIXED_HEIGHT_MODE:
1828       gtk_tree_view_set_fixed_height_mode (tree_view, g_value_get_boolean (value));
1829       break;
1830     case PROP_HOVER_SELECTION:
1831       tree_view->priv->hover_selection = g_value_get_boolean (value);
1832       break;
1833     case PROP_HOVER_EXPAND:
1834       tree_view->priv->hover_expand = g_value_get_boolean (value);
1835       break;
1836     case PROP_SHOW_EXPANDERS:
1837       gtk_tree_view_set_show_expanders (tree_view, g_value_get_boolean (value));
1838       break;
1839     case PROP_LEVEL_INDENTATION:
1840       tree_view->priv->level_indentation = g_value_get_int (value);
1841       break;
1842     case PROP_RUBBER_BANDING:
1843       tree_view->priv->rubber_banding_enable = g_value_get_boolean (value);
1844       break;
1845     case PROP_ENABLE_GRID_LINES:
1846       gtk_tree_view_set_grid_lines (tree_view, g_value_get_enum (value));
1847       break;
1848     case PROP_ENABLE_TREE_LINES:
1849       gtk_tree_view_set_enable_tree_lines (tree_view, g_value_get_boolean (value));
1850       break;
1851     case PROP_TOOLTIP_COLUMN:
1852       gtk_tree_view_set_tooltip_column (tree_view, g_value_get_int (value));
1853       break;
1854     default:
1855       G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
1856       break;
1857     }
1858 }
1859
1860 static void
1861 gtk_tree_view_get_property (GObject    *object,
1862                             guint       prop_id,
1863                             GValue     *value,
1864                             GParamSpec *pspec)
1865 {
1866   GtkTreeView *tree_view;
1867
1868   tree_view = GTK_TREE_VIEW (object);
1869
1870   switch (prop_id)
1871     {
1872     case PROP_MODEL:
1873       g_value_set_object (value, tree_view->priv->model);
1874       break;
1875     case PROP_HADJUSTMENT:
1876       g_value_set_object (value, tree_view->priv->hadjustment);
1877       break;
1878     case PROP_VADJUSTMENT:
1879       g_value_set_object (value, tree_view->priv->vadjustment);
1880       break;
1881     case PROP_HSCROLL_POLICY:
1882       g_value_set_enum (value, tree_view->priv->hscroll_policy);
1883       break;
1884     case PROP_VSCROLL_POLICY:
1885       g_value_set_enum (value, tree_view->priv->vscroll_policy);
1886       break;
1887     case PROP_HEADERS_VISIBLE:
1888       g_value_set_boolean (value, gtk_tree_view_get_headers_visible (tree_view));
1889       break;
1890     case PROP_HEADERS_CLICKABLE:
1891       g_value_set_boolean (value, gtk_tree_view_get_headers_clickable (tree_view));
1892       break;
1893     case PROP_EXPANDER_COLUMN:
1894       g_value_set_object (value, tree_view->priv->expander_column);
1895       break;
1896     case PROP_REORDERABLE:
1897       g_value_set_boolean (value, tree_view->priv->reorderable);
1898       break;
1899     case PROP_RULES_HINT:
1900       g_value_set_boolean (value, tree_view->priv->has_rules);
1901       break;
1902     case PROP_ENABLE_SEARCH:
1903       g_value_set_boolean (value, tree_view->priv->enable_search);
1904       break;
1905     case PROP_SEARCH_COLUMN:
1906       g_value_set_int (value, tree_view->priv->search_column);
1907       break;
1908     case PROP_FIXED_HEIGHT_MODE:
1909       g_value_set_boolean (value, tree_view->priv->fixed_height_mode);
1910       break;
1911     case PROP_HOVER_SELECTION:
1912       g_value_set_boolean (value, tree_view->priv->hover_selection);
1913       break;
1914     case PROP_HOVER_EXPAND:
1915       g_value_set_boolean (value, tree_view->priv->hover_expand);
1916       break;
1917     case PROP_SHOW_EXPANDERS:
1918       g_value_set_boolean (value, tree_view->priv->show_expanders);
1919       break;
1920     case PROP_LEVEL_INDENTATION:
1921       g_value_set_int (value, tree_view->priv->level_indentation);
1922       break;
1923     case PROP_RUBBER_BANDING:
1924       g_value_set_boolean (value, tree_view->priv->rubber_banding_enable);
1925       break;
1926     case PROP_ENABLE_GRID_LINES:
1927       g_value_set_enum (value, tree_view->priv->grid_lines);
1928       break;
1929     case PROP_ENABLE_TREE_LINES:
1930       g_value_set_boolean (value, tree_view->priv->tree_lines_enabled);
1931       break;
1932     case PROP_TOOLTIP_COLUMN:
1933       g_value_set_int (value, tree_view->priv->tooltip_column);
1934       break;
1935     default:
1936       G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
1937       break;
1938     }
1939 }
1940
1941 static void
1942 gtk_tree_view_finalize (GObject *object)
1943 {
1944   G_OBJECT_CLASS (gtk_tree_view_parent_class)->finalize (object);
1945 }
1946
1947
1948 static GtkBuildableIface *parent_buildable_iface;
1949
1950 static void
1951 gtk_tree_view_buildable_init (GtkBuildableIface *iface)
1952 {
1953   parent_buildable_iface = g_type_interface_peek_parent (iface);
1954   iface->add_child = gtk_tree_view_buildable_add_child;
1955   iface->get_internal_child = gtk_tree_view_buildable_get_internal_child;
1956 }
1957
1958 static void
1959 gtk_tree_view_buildable_add_child (GtkBuildable *tree_view,
1960                                    GtkBuilder  *builder,
1961                                    GObject     *child,
1962                                    const gchar *type)
1963 {
1964   gtk_tree_view_append_column (GTK_TREE_VIEW (tree_view), GTK_TREE_VIEW_COLUMN (child));
1965 }
1966
1967 static GObject *
1968 gtk_tree_view_buildable_get_internal_child (GtkBuildable      *buildable,
1969                                             GtkBuilder        *builder,
1970                                             const gchar       *childname)
1971 {
1972     if (strcmp (childname, "selection") == 0)
1973       return G_OBJECT (GTK_TREE_VIEW (buildable)->priv->selection);
1974
1975     return parent_buildable_iface->get_internal_child (buildable,
1976                                                        builder,
1977                                                        childname);
1978 }
1979
1980 /* GtkWidget Methods
1981  */
1982
1983 static void
1984 gtk_tree_view_free_rbtree (GtkTreeView *tree_view)
1985 {
1986   _gtk_rbtree_free (tree_view->priv->tree);
1987
1988   tree_view->priv->tree = NULL;
1989   tree_view->priv->button_pressed_node = NULL;
1990   tree_view->priv->button_pressed_tree = NULL;
1991   tree_view->priv->prelight_tree = NULL;
1992   tree_view->priv->prelight_node = NULL;
1993   tree_view->priv->expanded_collapsed_node = NULL;
1994   tree_view->priv->expanded_collapsed_tree = NULL;
1995 }
1996
1997 static void
1998 gtk_tree_view_destroy (GtkWidget *widget)
1999 {
2000   GtkTreeView *tree_view = GTK_TREE_VIEW (widget);
2001   GList *list;
2002
2003   gtk_tree_view_stop_editing (tree_view, TRUE);
2004
2005   if (tree_view->priv->columns != NULL)
2006     {
2007       list = tree_view->priv->columns;
2008       while (list)
2009         {
2010           GtkTreeViewColumn *column;
2011           column = GTK_TREE_VIEW_COLUMN (list->data);
2012           list = list->next;
2013           gtk_tree_view_remove_column (tree_view, column);
2014         }
2015       tree_view->priv->columns = NULL;
2016     }
2017
2018   if (tree_view->priv->tree != NULL)
2019     {
2020       gtk_tree_view_unref_and_check_selection_tree (tree_view, tree_view->priv->tree);
2021
2022       gtk_tree_view_free_rbtree (tree_view);
2023     }
2024
2025   if (tree_view->priv->selection != NULL)
2026     {
2027       _gtk_tree_selection_set_tree_view (tree_view->priv->selection, NULL);
2028       g_object_unref (tree_view->priv->selection);
2029       tree_view->priv->selection = NULL;
2030     }
2031
2032   if (tree_view->priv->scroll_to_path != NULL)
2033     {
2034       gtk_tree_row_reference_free (tree_view->priv->scroll_to_path);
2035       tree_view->priv->scroll_to_path = NULL;
2036     }
2037
2038   if (tree_view->priv->drag_dest_row != NULL)
2039     {
2040       gtk_tree_row_reference_free (tree_view->priv->drag_dest_row);
2041       tree_view->priv->drag_dest_row = NULL;
2042     }
2043
2044   if (tree_view->priv->top_row != NULL)
2045     {
2046       gtk_tree_row_reference_free (tree_view->priv->top_row);
2047       tree_view->priv->top_row = NULL;
2048     }
2049
2050   if (tree_view->priv->column_drop_func_data &&
2051       tree_view->priv->column_drop_func_data_destroy)
2052     {
2053       tree_view->priv->column_drop_func_data_destroy (tree_view->priv->column_drop_func_data);
2054       tree_view->priv->column_drop_func_data = NULL;
2055     }
2056
2057   if (tree_view->priv->destroy_count_destroy &&
2058       tree_view->priv->destroy_count_data)
2059     {
2060       tree_view->priv->destroy_count_destroy (tree_view->priv->destroy_count_data);
2061       tree_view->priv->destroy_count_data = NULL;
2062     }
2063
2064   gtk_tree_row_reference_free (tree_view->priv->anchor);
2065   tree_view->priv->anchor = NULL;
2066
2067   /* destroy interactive search dialog */
2068   if (tree_view->priv->search_window)
2069     {
2070       gtk_widget_destroy (tree_view->priv->search_window);
2071       tree_view->priv->search_window = NULL;
2072       tree_view->priv->search_entry = NULL;
2073       if (tree_view->priv->typeselect_flush_timeout)
2074         {
2075           g_source_remove (tree_view->priv->typeselect_flush_timeout);
2076           tree_view->priv->typeselect_flush_timeout = 0;
2077         }
2078     }
2079
2080   if (tree_view->priv->search_destroy && tree_view->priv->search_user_data)
2081     {
2082       tree_view->priv->search_destroy (tree_view->priv->search_user_data);
2083       tree_view->priv->search_user_data = NULL;
2084     }
2085
2086   if (tree_view->priv->search_position_destroy && tree_view->priv->search_position_user_data)
2087     {
2088       tree_view->priv->search_position_destroy (tree_view->priv->search_position_user_data);
2089       tree_view->priv->search_position_user_data = NULL;
2090     }
2091
2092   if (tree_view->priv->row_separator_destroy && tree_view->priv->row_separator_data)
2093     {
2094       tree_view->priv->row_separator_destroy (tree_view->priv->row_separator_data);
2095       tree_view->priv->row_separator_data = NULL;
2096     }
2097
2098   gtk_tree_view_set_model (tree_view, NULL);
2099
2100   if (tree_view->priv->hadjustment)
2101     {
2102       g_object_unref (tree_view->priv->hadjustment);
2103       tree_view->priv->hadjustment = NULL;
2104     }
2105   if (tree_view->priv->vadjustment)
2106     {
2107       g_object_unref (tree_view->priv->vadjustment);
2108       tree_view->priv->vadjustment = NULL;
2109     }
2110
2111   GTK_WIDGET_CLASS (gtk_tree_view_parent_class)->destroy (widget);
2112 }
2113
2114 /* GtkWidget::map helper */
2115 static void
2116 gtk_tree_view_map_buttons (GtkTreeView *tree_view)
2117 {
2118   GList *list;
2119
2120   g_return_if_fail (gtk_widget_get_mapped (GTK_WIDGET (tree_view)));
2121
2122   if (tree_view->priv->headers_visible)
2123     {
2124       GtkTreeViewColumn *column;
2125       GtkWidget         *button;
2126       GdkWindow         *window;
2127
2128       for (list = tree_view->priv->columns; list; list = list->next)
2129         {
2130           column = list->data;
2131           button = gtk_tree_view_column_get_button (column);
2132
2133           if (gtk_tree_view_column_get_visible (column) && button)
2134             gtk_widget_show_now (button);
2135
2136           if (gtk_widget_get_visible (button) &&
2137               !gtk_widget_get_mapped (button))
2138             gtk_widget_map (button);
2139         }
2140       for (list = tree_view->priv->columns; list; list = list->next)
2141         {
2142           column = list->data;
2143           if (gtk_tree_view_column_get_visible (column) == FALSE)
2144             continue;
2145
2146           window = _gtk_tree_view_column_get_window (column);
2147           if (gtk_tree_view_column_get_resizable (column))
2148             {
2149               gdk_window_raise (window);
2150               gdk_window_show (window);
2151             }
2152           else
2153             gdk_window_hide (window);
2154         }
2155       gdk_window_show (tree_view->priv->header_window);
2156     }
2157 }
2158
2159 static void
2160 gtk_tree_view_map (GtkWidget *widget)
2161 {
2162   GtkTreeView *tree_view = GTK_TREE_VIEW (widget);
2163   GList *tmp_list;
2164
2165   gtk_widget_set_mapped (widget, TRUE);
2166
2167   tmp_list = tree_view->priv->children;
2168   while (tmp_list)
2169     {
2170       GtkTreeViewChild *child = tmp_list->data;
2171       tmp_list = tmp_list->next;
2172
2173       if (gtk_widget_get_visible (child->widget))
2174         {
2175           if (!gtk_widget_get_mapped (child->widget))
2176             gtk_widget_map (child->widget);
2177         }
2178     }
2179   gdk_window_show (tree_view->priv->bin_window);
2180
2181   gtk_tree_view_map_buttons (tree_view);
2182
2183   gdk_window_show (gtk_widget_get_window (widget));
2184 }
2185
2186 static void
2187 gtk_tree_view_ensure_background (GtkTreeView *tree_view)
2188 {
2189   GtkStyleContext *context;
2190
2191   context = gtk_widget_get_style_context (GTK_WIDGET (tree_view));
2192
2193   gtk_style_context_save (context);
2194   gtk_style_context_add_class (context, GTK_STYLE_CLASS_VIEW);
2195   gtk_style_context_set_background (context, tree_view->priv->bin_window);
2196   gtk_style_context_restore (context);
2197
2198   gtk_style_context_set_background (context, tree_view->priv->header_window);
2199 }
2200
2201 static void
2202 gtk_tree_view_realize (GtkWidget *widget)
2203 {
2204   GtkAllocation allocation;
2205   GtkTreeView *tree_view = GTK_TREE_VIEW (widget);
2206   GdkWindow *window;
2207   GdkWindowAttr attributes;
2208   GList *tmp_list;
2209   gint attributes_mask;
2210
2211   gtk_widget_set_realized (widget, TRUE);
2212
2213   gtk_widget_get_allocation (widget, &allocation);
2214
2215   /* Make the main, clipping window */
2216   attributes.window_type = GDK_WINDOW_CHILD;
2217   attributes.x = allocation.x;
2218   attributes.y = allocation.y;
2219   attributes.width = allocation.width;
2220   attributes.height = allocation.height;
2221   attributes.wclass = GDK_INPUT_OUTPUT;
2222   attributes.visual = gtk_widget_get_visual (widget);
2223   attributes.event_mask = GDK_VISIBILITY_NOTIFY_MASK;
2224
2225   attributes_mask = GDK_WA_X | GDK_WA_Y | GDK_WA_VISUAL;
2226
2227   window = gdk_window_new (gtk_widget_get_parent_window (widget),
2228                            &attributes, attributes_mask);
2229   gtk_widget_set_window (widget, window);
2230   gdk_window_set_user_data (window, widget);
2231
2232   gtk_widget_get_allocation (widget, &allocation);
2233
2234   /* Make the window for the tree */
2235   attributes.x = 0;
2236   attributes.y = gtk_tree_view_get_effective_header_height (tree_view);
2237   attributes.width = MAX (tree_view->priv->width, allocation.width);
2238   attributes.height = allocation.height;
2239   attributes.event_mask = (GDK_EXPOSURE_MASK |
2240                            GDK_SCROLL_MASK |
2241                            GDK_POINTER_MOTION_MASK |
2242                            GDK_ENTER_NOTIFY_MASK |
2243                            GDK_LEAVE_NOTIFY_MASK |
2244                            GDK_BUTTON_PRESS_MASK |
2245                            GDK_BUTTON_RELEASE_MASK |
2246                            gtk_widget_get_events (widget));
2247
2248   tree_view->priv->bin_window = gdk_window_new (window,
2249                                                 &attributes, attributes_mask);
2250   gdk_window_set_user_data (tree_view->priv->bin_window, widget);
2251
2252   gtk_widget_get_allocation (widget, &allocation);
2253
2254   /* Make the column header window */
2255   attributes.x = 0;
2256   attributes.y = 0;
2257   attributes.width = MAX (tree_view->priv->width, allocation.width);
2258   attributes.height = tree_view->priv->header_height;
2259   attributes.event_mask = (GDK_EXPOSURE_MASK |
2260                            GDK_SCROLL_MASK |
2261                            GDK_ENTER_NOTIFY_MASK |
2262                            GDK_LEAVE_NOTIFY_MASK |
2263                            GDK_BUTTON_PRESS_MASK |
2264                            GDK_BUTTON_RELEASE_MASK |
2265                            GDK_KEY_PRESS_MASK |
2266                            GDK_KEY_RELEASE_MASK |
2267                            gtk_widget_get_events (widget));
2268
2269   tree_view->priv->header_window = gdk_window_new (window,
2270                                                    &attributes, attributes_mask);
2271   gdk_window_set_user_data (tree_view->priv->header_window, widget);
2272
2273   gtk_tree_view_ensure_background (tree_view);
2274
2275   tmp_list = tree_view->priv->children;
2276   while (tmp_list)
2277     {
2278       GtkTreeViewChild *child = tmp_list->data;
2279       tmp_list = tmp_list->next;
2280
2281       gtk_widget_set_parent_window (child->widget, tree_view->priv->bin_window);
2282     }
2283
2284   for (tmp_list = tree_view->priv->columns; tmp_list; tmp_list = tmp_list->next)
2285     _gtk_tree_view_column_realize_button (GTK_TREE_VIEW_COLUMN (tmp_list->data));
2286
2287   /* Need to call those here, since they create GCs */
2288   gtk_tree_view_set_grid_lines (tree_view, tree_view->priv->grid_lines);
2289   gtk_tree_view_set_enable_tree_lines (tree_view, tree_view->priv->tree_lines_enabled);
2290
2291   install_presize_handler (tree_view);
2292 }
2293
2294 static void
2295 gtk_tree_view_unrealize (GtkWidget *widget)
2296 {
2297   GtkTreeView *tree_view = GTK_TREE_VIEW (widget);
2298   GtkTreeViewPrivate *priv = tree_view->priv;
2299   GtkStyleContext *context;
2300   GList *list;
2301
2302   if (priv->scroll_timeout != 0)
2303     {
2304       g_source_remove (priv->scroll_timeout);
2305       priv->scroll_timeout = 0;
2306     }
2307
2308   if (priv->auto_expand_timeout != 0)
2309     {
2310       g_source_remove (priv->auto_expand_timeout);
2311       priv->auto_expand_timeout = 0;
2312     }
2313
2314   if (priv->open_dest_timeout != 0)
2315     {
2316       g_source_remove (priv->open_dest_timeout);
2317       priv->open_dest_timeout = 0;
2318     }
2319
2320   context = gtk_widget_get_style_context (widget);
2321   gtk_style_context_cancel_animations (context, NULL);
2322
2323   if (priv->presize_handler_timer != 0)
2324     {
2325       g_source_remove (priv->presize_handler_timer);
2326       priv->presize_handler_timer = 0;
2327     }
2328
2329   if (priv->validate_rows_timer != 0)
2330     {
2331       g_source_remove (priv->validate_rows_timer);
2332       priv->validate_rows_timer = 0;
2333     }
2334
2335   if (priv->scroll_sync_timer != 0)
2336     {
2337       g_source_remove (priv->scroll_sync_timer);
2338       priv->scroll_sync_timer = 0;
2339     }
2340
2341   if (priv->typeselect_flush_timeout)
2342     {
2343       g_source_remove (priv->typeselect_flush_timeout);
2344       priv->typeselect_flush_timeout = 0;
2345     }
2346
2347   for (list = priv->columns; list; list = list->next)
2348     _gtk_tree_view_column_unrealize_button (GTK_TREE_VIEW_COLUMN (list->data));
2349
2350   gdk_window_set_user_data (priv->bin_window, NULL);
2351   gdk_window_destroy (priv->bin_window);
2352   priv->bin_window = NULL;
2353
2354   gdk_window_set_user_data (priv->header_window, NULL);
2355   gdk_window_destroy (priv->header_window);
2356   priv->header_window = NULL;
2357
2358   if (priv->drag_window)
2359     {
2360       gdk_window_set_user_data (priv->drag_window, NULL);
2361       gdk_window_destroy (priv->drag_window);
2362       priv->drag_window = NULL;
2363     }
2364
2365   if (priv->drag_highlight_window)
2366     {
2367       gdk_window_set_user_data (priv->drag_highlight_window, NULL);
2368       gdk_window_destroy (priv->drag_highlight_window);
2369       priv->drag_highlight_window = NULL;
2370     }
2371
2372   GTK_WIDGET_CLASS (gtk_tree_view_parent_class)->unrealize (widget);
2373 }
2374
2375 /* GtkWidget::size_request helper */
2376 static void
2377 gtk_tree_view_size_request_columns (GtkTreeView *tree_view)
2378 {
2379   GList *list;
2380
2381   tree_view->priv->header_height = 0;
2382
2383   for (list = tree_view->priv->columns; list; list = list->next)
2384     {
2385       GtkRequisition     requisition;
2386       GtkTreeViewColumn *column = list->data;
2387       GtkWidget         *button = gtk_tree_view_column_get_button (column);
2388
2389       if (button == NULL)
2390         continue;
2391
2392       gtk_widget_get_preferred_size (button, &requisition, NULL);
2393       tree_view->priv->header_height = MAX (tree_view->priv->header_height, requisition.height);
2394     }
2395 }
2396
2397
2398 /* Called only by ::size_request */
2399 static void
2400 gtk_tree_view_update_size (GtkTreeView *tree_view)
2401 {
2402   GList *list;
2403   GtkTreeViewColumn *column;
2404   gint i;
2405
2406   if (tree_view->priv->model == NULL)
2407     {
2408       tree_view->priv->width = 0;
2409       tree_view->priv->prev_width = 0;
2410       tree_view->priv->height = 0;
2411       return;
2412     }
2413
2414   tree_view->priv->prev_width = tree_view->priv->width;
2415   tree_view->priv->width = 0;
2416
2417   /* keep this in sync with size_allocate below */
2418   for (list = tree_view->priv->columns, i = 0; list; list = list->next, i++)
2419     {
2420       column = list->data;
2421       if (!gtk_tree_view_column_get_visible (column))
2422         continue;
2423
2424       tree_view->priv->width += _gtk_tree_view_column_request_width (column);
2425     }
2426
2427   if (tree_view->priv->tree == NULL)
2428     tree_view->priv->height = 0;
2429   else
2430     tree_view->priv->height = tree_view->priv->tree->root->offset;
2431 }
2432
2433 static void
2434 gtk_tree_view_size_request (GtkWidget      *widget,
2435                             GtkRequisition *requisition,
2436                             gboolean        may_validate)
2437 {
2438   GtkTreeView *tree_view = GTK_TREE_VIEW (widget);
2439
2440   if (may_validate)
2441     {
2442       /* we validate some rows initially just to make sure we have some size.
2443        * In practice, with a lot of static lists, this should get a good width.
2444        */
2445       do_validate_rows (tree_view, FALSE);
2446     }
2447
2448   gtk_tree_view_size_request_columns (tree_view);
2449   gtk_tree_view_update_size (GTK_TREE_VIEW (widget));
2450
2451   requisition->width = tree_view->priv->width;
2452   requisition->height = tree_view->priv->height + gtk_tree_view_get_effective_header_height (tree_view);
2453 }
2454
2455 static void
2456 gtk_tree_view_get_preferred_width (GtkWidget *widget,
2457                                    gint      *minimum,
2458                                    gint      *natural)
2459 {
2460   GtkRequisition requisition;
2461
2462   gtk_tree_view_size_request (widget, &requisition, TRUE);
2463
2464   *minimum = *natural = requisition.width;
2465 }
2466
2467 static void
2468 gtk_tree_view_get_preferred_height (GtkWidget *widget,
2469                                     gint      *minimum,
2470                                     gint      *natural)
2471 {
2472   GtkRequisition requisition;
2473
2474   gtk_tree_view_size_request (widget, &requisition, TRUE);
2475
2476   *minimum = *natural = requisition.height;
2477 }
2478
2479 static int
2480 gtk_tree_view_calculate_width_before_expander (GtkTreeView *tree_view)
2481 {
2482   int width = 0;
2483   GList *list;
2484   gboolean rtl;
2485
2486   rtl = (gtk_widget_get_direction (GTK_WIDGET (tree_view)) == GTK_TEXT_DIR_RTL);
2487   for (list = (rtl ? g_list_last (tree_view->priv->columns) : g_list_first (tree_view->priv->columns));
2488        list->data != tree_view->priv->expander_column;
2489        list = (rtl ? list->prev : list->next))
2490     {
2491       GtkTreeViewColumn *column = list->data;
2492
2493       width += gtk_tree_view_column_get_width (column);
2494     }
2495
2496   return width;
2497 }
2498
2499 /* GtkWidget::size_allocate helper */
2500 static void
2501 gtk_tree_view_size_allocate_columns (GtkWidget *widget,
2502                                      gboolean  *width_changed)
2503 {
2504   GtkTreeView *tree_view;
2505   GList *list, *first_column, *last_column;
2506   GtkTreeViewColumn *column;
2507   GtkAllocation widget_allocation;
2508   gint width = 0;
2509   gint extra, extra_per_column, extra_for_last;
2510   gint full_requested_width = 0;
2511   gint number_of_expand_columns = 0;
2512   gboolean rtl;
2513   gboolean update_expand;
2514
2515   tree_view = GTK_TREE_VIEW (widget);
2516
2517   for (last_column = g_list_last (tree_view->priv->columns);
2518        last_column &&
2519        !(gtk_tree_view_column_get_visible (GTK_TREE_VIEW_COLUMN (last_column->data)));
2520        last_column = last_column->prev)
2521     ;
2522   if (last_column == NULL)
2523     return;
2524
2525   for (first_column = g_list_first (tree_view->priv->columns);
2526        first_column &&
2527        !(gtk_tree_view_column_get_visible (GTK_TREE_VIEW_COLUMN (first_column->data)));
2528        first_column = first_column->next)
2529     ;
2530
2531   rtl = (gtk_widget_get_direction (widget) == GTK_TEXT_DIR_RTL);
2532
2533   /* find out how many extra space and expandable columns we have */
2534   for (list = tree_view->priv->columns; list != last_column->next; list = list->next)
2535     {
2536       column = (GtkTreeViewColumn *)list->data;
2537
2538       if (!gtk_tree_view_column_get_visible (column))
2539         continue;
2540
2541       full_requested_width += _gtk_tree_view_column_request_width (column);
2542
2543       if (gtk_tree_view_column_get_expand (column))
2544         number_of_expand_columns++;
2545     }
2546
2547   /* Only update the expand value if the width of the widget has changed,
2548    * or the number of expand columns has changed, or if there are no expand
2549    * columns, or if we didn't have an size-allocation yet after the
2550    * last validated node.
2551    */
2552   update_expand = (width_changed && *width_changed == TRUE)
2553       || number_of_expand_columns != tree_view->priv->last_number_of_expand_columns
2554       || number_of_expand_columns == 0
2555       || tree_view->priv->post_validation_flag == TRUE;
2556
2557   tree_view->priv->post_validation_flag = FALSE;
2558
2559   gtk_widget_get_allocation (widget, &widget_allocation);
2560   if (!update_expand)
2561     {
2562       extra = tree_view->priv->last_extra_space;
2563       extra_for_last = MAX (widget_allocation.width - full_requested_width - extra, 0);
2564     }
2565   else
2566     {
2567       extra = MAX (widget_allocation.width - full_requested_width, 0);
2568       extra_for_last = 0;
2569
2570       tree_view->priv->last_extra_space = extra;
2571     }
2572
2573   if (number_of_expand_columns > 0)
2574     extra_per_column = extra/number_of_expand_columns;
2575   else
2576     extra_per_column = 0;
2577
2578   if (update_expand)
2579     {
2580       tree_view->priv->last_extra_space_per_column = extra_per_column;
2581       tree_view->priv->last_number_of_expand_columns = number_of_expand_columns;
2582     }
2583
2584   for (list = (rtl ? last_column : first_column);
2585        list != (rtl ? first_column->prev : last_column->next);
2586        list = (rtl ? list->prev : list->next))
2587     {
2588       gint column_width;
2589
2590       column = list->data;
2591
2592       if (!gtk_tree_view_column_get_visible (column))
2593         continue;
2594
2595       /* We need to handle the dragged button specially.
2596        */
2597       if (column == tree_view->priv->drag_column)
2598         {
2599           GtkAllocation drag_allocation;
2600           GtkWidget    *button;
2601
2602           button = gtk_tree_view_column_get_button (tree_view->priv->drag_column);
2603
2604           drag_allocation.x = 0;
2605           drag_allocation.y = 0;
2606           drag_allocation.width = gdk_window_get_width (tree_view->priv->drag_window);
2607           drag_allocation.height = gdk_window_get_height (tree_view->priv->drag_window);
2608           gtk_widget_size_allocate (button, &drag_allocation);
2609           width += drag_allocation.width;
2610           continue;
2611         }
2612
2613       column_width = _gtk_tree_view_column_request_width (column);
2614
2615       if (gtk_tree_view_column_get_expand (column))
2616         {
2617           if (number_of_expand_columns == 1)
2618             {
2619               /* We add the remander to the last column as
2620                * */
2621               column_width += extra;
2622             }
2623           else
2624             {
2625               column_width += extra_per_column;
2626               extra -= extra_per_column;
2627               number_of_expand_columns --;
2628             }
2629         }
2630       else if (number_of_expand_columns == 0 &&
2631                list == last_column)
2632         {
2633           column_width += extra;
2634         }
2635
2636       /* In addition to expand, the last column can get even more
2637        * extra space so all available space is filled up.
2638        */
2639       if (extra_for_last > 0 && list == last_column)
2640         column_width += extra_for_last;
2641
2642       _gtk_tree_view_column_allocate (column, width, column_width);
2643
2644       width += column_width;
2645     }
2646
2647   /* We change the width here.  The user might have been resizing columns,
2648    * which changes the total width of the tree view.  This is of
2649    * importance for getting the horizontal scroll bar right.
2650    */
2651   if (tree_view->priv->width != width)
2652     {
2653       tree_view->priv->width = width;
2654       if (width_changed)
2655         *width_changed = TRUE;
2656     }
2657 }
2658
2659
2660 static void
2661 gtk_tree_view_size_allocate (GtkWidget     *widget,
2662                              GtkAllocation *allocation)
2663 {
2664   GtkAllocation widget_allocation;
2665   GtkTreeView *tree_view = GTK_TREE_VIEW (widget);
2666   GList *tmp_list;
2667   gboolean width_changed = FALSE;
2668   gint old_width;
2669
2670   gtk_widget_get_allocation (widget, &widget_allocation);
2671   old_width = widget_allocation.width;
2672   if (allocation->width != widget_allocation.width)
2673     width_changed = TRUE;
2674
2675   gtk_widget_set_allocation (widget, allocation);
2676
2677   tmp_list = tree_view->priv->children;
2678
2679   while (tmp_list)
2680     {
2681       GtkAllocation allocation;
2682
2683       GtkTreeViewChild *child = tmp_list->data;
2684       tmp_list = tmp_list->next;
2685
2686       /* totally ignore our child's requisition */
2687       allocation.x = child->x;
2688       allocation.y = child->y;
2689       allocation.width = child->width;
2690       allocation.height = child->height;
2691       gtk_widget_size_allocate (child->widget, &allocation);
2692     }
2693
2694   /* We size-allocate the columns first because the width of the
2695    * tree view (used in updating the adjustments below) might change.
2696    */
2697   gtk_tree_view_size_allocate_columns (widget, &width_changed);
2698
2699   g_object_freeze_notify (G_OBJECT (tree_view->priv->hadjustment));
2700   gtk_adjustment_set_page_size (tree_view->priv->hadjustment,
2701                                 allocation->width);
2702   gtk_adjustment_set_page_increment (tree_view->priv->hadjustment,
2703                                      allocation->width * 0.9);
2704   gtk_adjustment_set_step_increment (tree_view->priv->hadjustment,
2705                                      allocation->width * 0.1);
2706   gtk_adjustment_set_lower (tree_view->priv->hadjustment, 0);
2707   gtk_adjustment_set_upper (tree_view->priv->hadjustment,
2708                             MAX (gtk_adjustment_get_page_size (tree_view->priv->hadjustment),
2709                                  tree_view->priv->width));
2710   g_object_thaw_notify (G_OBJECT (tree_view->priv->hadjustment));
2711
2712   if (gtk_widget_get_direction(widget) == GTK_TEXT_DIR_RTL)
2713     {
2714       if (allocation->width < tree_view->priv->width)
2715         {
2716           if (tree_view->priv->init_hadjust_value)
2717             {
2718               gtk_adjustment_set_value (tree_view->priv->hadjustment,
2719                                         MAX (tree_view->priv->width -
2720                                              allocation->width, 0));
2721               tree_view->priv->init_hadjust_value = FALSE;
2722             }
2723           else if (allocation->width != old_width)
2724             {
2725               gtk_adjustment_set_value (tree_view->priv->hadjustment,
2726                                         CLAMP (gtk_adjustment_get_value (tree_view->priv->hadjustment) - allocation->width + old_width,
2727                                                0,
2728                                                tree_view->priv->width - allocation->width));
2729             }
2730           else
2731             gtk_adjustment_set_value (tree_view->priv->hadjustment,
2732                                       CLAMP (tree_view->priv->width - (tree_view->priv->prev_width - gtk_adjustment_get_value (tree_view->priv->hadjustment)),
2733                                              0,
2734                                              tree_view->priv->width - allocation->width));
2735         }
2736       else
2737         {
2738           gtk_adjustment_set_value (tree_view->priv->hadjustment, 0);
2739           tree_view->priv->init_hadjust_value = TRUE;
2740         }
2741     }
2742   else
2743     if (gtk_adjustment_get_value (tree_view->priv->hadjustment) + allocation->width > tree_view->priv->width)
2744       gtk_adjustment_set_value (tree_view->priv->hadjustment,
2745                                 MAX (tree_view->priv->width -
2746                                      allocation->width, 0));
2747
2748   g_object_freeze_notify (G_OBJECT (tree_view->priv->vadjustment));
2749   gtk_adjustment_set_page_size (tree_view->priv->vadjustment,
2750                                 allocation->height -
2751                                 gtk_tree_view_get_effective_header_height (tree_view));
2752   gtk_adjustment_set_step_increment (tree_view->priv->vadjustment,
2753                                      gtk_adjustment_get_page_size (tree_view->priv->vadjustment) * 0.1);
2754   gtk_adjustment_set_page_increment (tree_view->priv->vadjustment,
2755                                      gtk_adjustment_get_page_size (tree_view->priv->vadjustment) * 0.9);
2756   gtk_adjustment_set_lower (tree_view->priv->vadjustment, 0);
2757   gtk_adjustment_set_upper (tree_view->priv->vadjustment,
2758                             MAX (gtk_adjustment_get_page_size (tree_view->priv->vadjustment),
2759                                  tree_view->priv->height));
2760   g_object_thaw_notify (G_OBJECT (tree_view->priv->vadjustment));
2761
2762   /* now the adjustments and window sizes are in sync, we can sync toprow/dy again */
2763   if (tree_view->priv->height <= gtk_adjustment_get_page_size (tree_view->priv->vadjustment))
2764     gtk_adjustment_set_value (GTK_ADJUSTMENT (tree_view->priv->vadjustment), 0);
2765   else if (gtk_adjustment_get_value (tree_view->priv->vadjustment) + gtk_adjustment_get_page_size (tree_view->priv->vadjustment) > tree_view->priv->height)
2766     gtk_adjustment_set_value (GTK_ADJUSTMENT (tree_view->priv->vadjustment),
2767                               tree_view->priv->height - gtk_adjustment_get_page_size (tree_view->priv->vadjustment));
2768   else if (gtk_tree_row_reference_valid (tree_view->priv->top_row))
2769     gtk_tree_view_top_row_to_dy (tree_view);
2770   else
2771     gtk_tree_view_dy_to_top_row (tree_view);
2772
2773   if (gtk_widget_get_realized (widget))
2774     {
2775       gdk_window_move_resize (gtk_widget_get_window (widget),
2776                               allocation->x, allocation->y,
2777                               allocation->width, allocation->height);
2778       gdk_window_move_resize (tree_view->priv->header_window,
2779                               - (gint) gtk_adjustment_get_value (tree_view->priv->hadjustment),
2780                               0,
2781                               MAX (tree_view->priv->width, allocation->width),
2782                               tree_view->priv->header_height);
2783       gdk_window_move_resize (tree_view->priv->bin_window,
2784                               - (gint) gtk_adjustment_get_value (tree_view->priv->hadjustment),
2785                               gtk_tree_view_get_effective_header_height (tree_view),
2786                               MAX (tree_view->priv->width, allocation->width),
2787                               allocation->height - gtk_tree_view_get_effective_header_height (tree_view));
2788
2789       if (tree_view->priv->tree == NULL)
2790         invalidate_empty_focus (tree_view);
2791
2792       if (width_changed && tree_view->priv->expander_column)
2793         {
2794           /* Might seem awkward, but is the best heuristic I could come up
2795            * with.  Only if the width of the columns before the expander
2796            * changes, we will update the prelight status.  It is this
2797            * width that makes the expander move vertically.  Always updating
2798            * prelight status causes trouble with hover selections.
2799            */
2800           gint width_before_expander;
2801
2802           width_before_expander = gtk_tree_view_calculate_width_before_expander (tree_view);
2803
2804           if (tree_view->priv->prev_width_before_expander
2805               != width_before_expander)
2806               update_prelight (tree_view,
2807                                tree_view->priv->event_last_x,
2808                                tree_view->priv->event_last_y);
2809
2810           tree_view->priv->prev_width_before_expander = width_before_expander;
2811         }
2812     }
2813 }
2814
2815 /* Grabs the focus and unsets the GTK_TREE_VIEW_DRAW_KEYFOCUS flag */
2816 static void
2817 grab_focus_and_unset_draw_keyfocus (GtkTreeView *tree_view)
2818 {
2819   GtkWidget *widget = GTK_WIDGET (tree_view);
2820
2821   if (gtk_widget_get_can_focus (widget) && !gtk_widget_has_focus (widget))
2822     gtk_widget_grab_focus (widget);
2823   tree_view->priv->draw_keyfocus = 0;
2824 }
2825
2826 static inline gboolean
2827 row_is_separator (GtkTreeView *tree_view,
2828                   GtkTreeIter *iter,
2829                   GtkTreePath *path)
2830 {
2831   gboolean is_separator = FALSE;
2832
2833   if (tree_view->priv->row_separator_func)
2834     {
2835       GtkTreeIter tmpiter;
2836
2837       if (iter)
2838         tmpiter = *iter;
2839       else
2840         {
2841           if (!gtk_tree_model_get_iter (tree_view->priv->model, &tmpiter, path))
2842             return FALSE;
2843         }
2844
2845       is_separator = tree_view->priv->row_separator_func (tree_view->priv->model,
2846                                                           &tmpiter,
2847                                                           tree_view->priv->row_separator_data);
2848     }
2849
2850   return is_separator;
2851 }
2852
2853 static gboolean
2854 gtk_tree_view_button_press (GtkWidget      *widget,
2855                             GdkEventButton *event)
2856 {
2857   GtkTreeView *tree_view = GTK_TREE_VIEW (widget);
2858   GList *list;
2859   GtkTreeViewColumn *column = NULL;
2860   gint i;
2861   GdkRectangle background_area;
2862   GdkRectangle cell_area;
2863   gint vertical_separator;
2864   gint horizontal_separator;
2865   gboolean path_is_selectable;
2866   gboolean rtl;
2867
2868   rtl = (gtk_widget_get_direction (widget) == GTK_TEXT_DIR_RTL);
2869   gtk_tree_view_stop_editing (tree_view, FALSE);
2870   gtk_widget_style_get (widget,
2871                         "vertical-separator", &vertical_separator,
2872                         "horizontal-separator", &horizontal_separator,
2873                         NULL);
2874
2875   /* Because grab_focus can cause reentrancy, we delay grab_focus until after
2876    * we're done handling the button press.
2877    */
2878
2879   if (event->window == tree_view->priv->bin_window)
2880     {
2881       GtkRBNode *node;
2882       GtkRBTree *tree;
2883       GtkTreePath *path;
2884       gint depth;
2885       gint new_y;
2886       gint y_offset;
2887       gint dval;
2888       gint pre_val, aft_val;
2889       GtkTreeViewColumn *column = NULL;
2890       gint column_handled_click = FALSE;
2891       gboolean row_double_click = FALSE;
2892       gboolean rtl;
2893       gboolean node_selected;
2894       GdkModifierType extend_mod_mask;
2895       GdkModifierType modify_mod_mask;
2896
2897       /* Empty tree? */
2898       if (tree_view->priv->tree == NULL)
2899         {
2900           grab_focus_and_unset_draw_keyfocus (tree_view);
2901           return TRUE;
2902         }
2903
2904       /* are we in an arrow? */
2905       if (tree_view->priv->prelight_node &&
2906           tree_view->priv->arrow_prelit &&
2907           gtk_tree_view_draw_expanders (tree_view))
2908         {
2909           if (event->button == 1)
2910             {
2911               gtk_grab_add (widget);
2912               tree_view->priv->button_pressed_node = tree_view->priv->prelight_node;
2913               tree_view->priv->button_pressed_tree = tree_view->priv->prelight_tree;
2914               gtk_tree_view_queue_draw_arrow (GTK_TREE_VIEW (widget),
2915                                               tree_view->priv->prelight_tree,
2916                                               tree_view->priv->prelight_node);
2917             }
2918
2919           grab_focus_and_unset_draw_keyfocus (tree_view);
2920           return TRUE;
2921         }
2922
2923       /* find the node that was clicked */
2924       new_y = TREE_WINDOW_Y_TO_RBTREE_Y(tree_view, event->y);
2925       if (new_y < 0)
2926         new_y = 0;
2927       y_offset = -_gtk_rbtree_find_offset (tree_view->priv->tree, new_y, &tree, &node);
2928
2929       if (node == NULL)
2930         {
2931           /* We clicked in dead space */
2932           grab_focus_and_unset_draw_keyfocus (tree_view);
2933           return TRUE;
2934         }
2935
2936       /* Get the path and the node */
2937       path = _gtk_tree_path_new_from_rbtree (tree, node);
2938       path_is_selectable = !row_is_separator (tree_view, NULL, path);
2939
2940       if (!path_is_selectable)
2941         {
2942           gtk_tree_path_free (path);
2943           grab_focus_and_unset_draw_keyfocus (tree_view);
2944           return TRUE;
2945         }
2946
2947       depth = gtk_tree_path_get_depth (path);
2948       background_area.y = y_offset + event->y;
2949       background_area.height = gtk_tree_view_get_row_height (tree_view, node);
2950       background_area.x = 0;
2951
2952
2953       /* Let the column have a chance at selecting it. */
2954       rtl = (gtk_widget_get_direction (GTK_WIDGET (tree_view)) == GTK_TEXT_DIR_RTL);
2955       for (list = (rtl ? g_list_last (tree_view->priv->columns) : g_list_first (tree_view->priv->columns));
2956            list; list = (rtl ? list->prev : list->next))
2957         {
2958           GtkTreeViewColumn *candidate = list->data;
2959
2960           if (!gtk_tree_view_column_get_visible (candidate))
2961             continue;
2962
2963           background_area.width = gtk_tree_view_column_get_width (candidate);
2964           if ((background_area.x > (gint) event->x) ||
2965               (background_area.x + background_area.width <= (gint) event->x))
2966             {
2967               background_area.x += background_area.width;
2968               continue;
2969             }
2970
2971           /* we found the focus column */
2972           column = candidate;
2973           cell_area = background_area;
2974           cell_area.width -= horizontal_separator;
2975           cell_area.height -= vertical_separator;
2976           cell_area.x += horizontal_separator/2;
2977           cell_area.y += vertical_separator/2;
2978           if (gtk_tree_view_is_expander_column (tree_view, column))
2979             {
2980               if (!rtl)
2981                 cell_area.x += (depth - 1) * tree_view->priv->level_indentation;
2982               cell_area.width -= (depth - 1) * tree_view->priv->level_indentation;
2983
2984               if (gtk_tree_view_draw_expanders (tree_view))
2985                 {
2986                   if (!rtl)
2987                     cell_area.x += depth * tree_view->priv->expander_size;
2988                   cell_area.width -= depth * tree_view->priv->expander_size;
2989                 }
2990             }
2991           break;
2992         }
2993
2994       if (column == NULL)
2995         {
2996           gtk_tree_path_free (path);
2997           grab_focus_and_unset_draw_keyfocus (tree_view);
2998           return FALSE;
2999         }
3000
3001       tree_view->priv->focus_column = column;
3002
3003       /* decide if we edit */
3004       if (event->type == GDK_BUTTON_PRESS && event->button == 1 &&
3005           !(event->state & gtk_accelerator_get_default_mod_mask ()))
3006         {
3007           GtkTreePath *anchor;
3008           GtkTreeIter iter;
3009
3010           gtk_tree_model_get_iter (tree_view->priv->model, &iter, path);
3011           gtk_tree_view_column_cell_set_cell_data (column,
3012                                                    tree_view->priv->model,
3013                                                    &iter,
3014                                                    GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_PARENT),
3015                                                    node->children?TRUE:FALSE);
3016
3017           if (tree_view->priv->anchor)
3018             anchor = gtk_tree_row_reference_get_path (tree_view->priv->anchor);
3019           else
3020             anchor = NULL;
3021
3022           if ((anchor && !gtk_tree_path_compare (anchor, path))
3023               || !_gtk_tree_view_column_has_editable_cell (column))
3024             {
3025               GtkCellEditable *cell_editable = NULL;
3026
3027               /* FIXME: get the right flags */
3028               guint flags = 0;
3029
3030               if (_gtk_tree_view_column_cell_event (column,
3031                                                     (GdkEvent *)event,
3032                                                     &cell_area, flags))
3033                 {
3034                   GtkCellArea *area = gtk_cell_layout_get_area (GTK_CELL_LAYOUT (column));
3035                   cell_editable = gtk_cell_area_get_edit_widget (area);
3036
3037                   if (cell_editable != NULL)
3038                     {
3039                       gtk_tree_path_free (path);
3040                       gtk_tree_path_free (anchor);
3041                       return TRUE;
3042                     }
3043                   column_handled_click = TRUE;
3044                 }
3045             }
3046           if (anchor)
3047             gtk_tree_path_free (anchor);
3048         }
3049
3050       extend_mod_mask =
3051         gtk_widget_get_modifier_mask (widget, GDK_MODIFIER_INTENT_EXTEND_SELECTION);
3052
3053       modify_mod_mask =
3054         gtk_widget_get_modifier_mask (widget, GDK_MODIFIER_INTENT_MODIFY_SELECTION);
3055
3056       /* select */
3057       node_selected = GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_SELECTED);
3058       pre_val = gtk_adjustment_get_value (tree_view->priv->vadjustment);
3059
3060       /* we only handle selection modifications on the first button press
3061        */
3062       if (event->type == GDK_BUTTON_PRESS)
3063         {
3064           GtkCellRenderer *focus_cell;
3065
3066           if ((event->state & modify_mod_mask) == modify_mod_mask)
3067             tree_view->priv->modify_selection_pressed = TRUE;
3068           if ((event->state & extend_mod_mask) == extend_mod_mask)
3069             tree_view->priv->extend_selection_pressed = TRUE;
3070
3071           /* We update the focus cell here, this is also needed if the
3072            * column does not contain an editable cell.  In this case,
3073            * GtkCellArea did not receive the event for processing (and
3074            * could not update the focus cell).
3075            */
3076           focus_cell = _gtk_tree_view_column_get_cell_at_pos (column,
3077                                                               &cell_area,
3078                                                               &background_area,
3079                                                               event->x,
3080                                                               event->y);
3081
3082           if (focus_cell)
3083             gtk_tree_view_column_focus_cell (column, focus_cell);
3084
3085           if (event->state & modify_mod_mask)
3086             {
3087               gtk_tree_view_real_set_cursor (tree_view, path, CLAMP_NODE);
3088               gtk_tree_view_real_toggle_cursor_row (tree_view);
3089             }
3090           else if (event->state & extend_mod_mask)
3091             {
3092               gtk_tree_view_real_set_cursor (tree_view, path, CLAMP_NODE);
3093               gtk_tree_view_real_select_cursor_row (tree_view, FALSE);
3094             }
3095           else
3096             {
3097               gtk_tree_view_real_set_cursor (tree_view, path, CLEAR_AND_SELECT | CLAMP_NODE);
3098             }
3099
3100           tree_view->priv->modify_selection_pressed = FALSE;
3101           tree_view->priv->extend_selection_pressed = FALSE;
3102         }
3103
3104       /* the treeview may have been scrolled because of _set_cursor,
3105        * correct here
3106        */
3107
3108       aft_val = gtk_adjustment_get_value (tree_view->priv->vadjustment);
3109       dval = pre_val - aft_val;
3110
3111       cell_area.y += dval;
3112       background_area.y += dval;
3113
3114       /* Save press to possibly begin a drag
3115        */
3116       if (!column_handled_click &&
3117           !tree_view->priv->in_grab &&
3118           tree_view->priv->pressed_button < 0)
3119         {
3120           tree_view->priv->pressed_button = event->button;
3121           tree_view->priv->press_start_x = event->x;
3122           tree_view->priv->press_start_y = event->y;
3123
3124           if (tree_view->priv->rubber_banding_enable
3125               && !node_selected
3126               && gtk_tree_selection_get_mode (tree_view->priv->selection) == GTK_SELECTION_MULTIPLE)
3127             {
3128               tree_view->priv->press_start_y += tree_view->priv->dy;
3129               tree_view->priv->rubber_band_x = event->x;
3130               tree_view->priv->rubber_band_y = event->y + tree_view->priv->dy;
3131               tree_view->priv->rubber_band_status = RUBBER_BAND_MAYBE_START;
3132
3133               if ((event->state & modify_mod_mask) == modify_mod_mask)
3134                 tree_view->priv->rubber_band_modify = TRUE;
3135               if ((event->state & extend_mod_mask) == extend_mod_mask)
3136                 tree_view->priv->rubber_band_extend = TRUE;
3137             }
3138         }
3139
3140       /* Test if a double click happened on the same row. */
3141       if (event->button == 1 && event->type == GDK_BUTTON_PRESS)
3142         {
3143           int double_click_time, double_click_distance;
3144
3145           g_object_get (gtk_settings_get_default (),
3146                         "gtk-double-click-time", &double_click_time,
3147                         "gtk-double-click-distance", &double_click_distance,
3148                         NULL);
3149
3150           /* Same conditions as _gdk_event_button_generate */
3151           if (tree_view->priv->last_button_x != -1 &&
3152               (event->time < tree_view->priv->last_button_time + double_click_time) &&
3153               (ABS (event->x - tree_view->priv->last_button_x) <= double_click_distance) &&
3154               (ABS (event->y - tree_view->priv->last_button_y) <= double_click_distance))
3155             {
3156               /* We do no longer compare paths of this row and the
3157                * row clicked previously.  We use the double click
3158                * distance to decide whether this is a valid click,
3159                * allowing the mouse to slightly move over another row.
3160                */
3161               row_double_click = TRUE;
3162
3163               tree_view->priv->last_button_time = 0;
3164               tree_view->priv->last_button_x = -1;
3165               tree_view->priv->last_button_y = -1;
3166             }
3167           else
3168             {
3169               tree_view->priv->last_button_time = event->time;
3170               tree_view->priv->last_button_x = event->x;
3171               tree_view->priv->last_button_y = event->y;
3172             }
3173         }
3174
3175       if (row_double_click)
3176         {
3177           gtk_grab_remove (widget);
3178           gtk_tree_view_row_activated (tree_view, path, column);
3179
3180           if (tree_view->priv->pressed_button == event->button)
3181             tree_view->priv->pressed_button = -1;
3182         }
3183
3184       gtk_tree_path_free (path);
3185
3186       /* If we activated the row through a double click we don't want to grab
3187        * focus back, as moving focus to another widget is pretty common.
3188        */
3189       if (!row_double_click)
3190         grab_focus_and_unset_draw_keyfocus (tree_view);
3191
3192       return TRUE;
3193     }
3194
3195   /* We didn't click in the window.  Let's check to see if we clicked on a column resize window.
3196    */
3197   for (i = 0, list = tree_view->priv->columns; list; list = list->next, i++)
3198     {
3199       column = list->data;
3200       if (event->window == _gtk_tree_view_column_get_window (column) &&
3201           gtk_tree_view_column_get_resizable (column) &&
3202           _gtk_tree_view_column_get_window (column))
3203         {
3204           gpointer drag_data;
3205
3206           if (event->type == GDK_2BUTTON_PRESS &&
3207               gtk_tree_view_column_get_sizing (column) != GTK_TREE_VIEW_COLUMN_AUTOSIZE)
3208             {
3209               _gtk_tree_view_column_set_use_resized_width (column, FALSE);
3210               _gtk_tree_view_column_autosize (tree_view, column);
3211               return TRUE;
3212             }
3213
3214           if (gdk_device_grab (gdk_event_get_device ((GdkEvent*)event),
3215                                _gtk_tree_view_column_get_window (column),
3216                                GDK_OWNERSHIP_NONE,
3217                                FALSE,
3218                                GDK_POINTER_MOTION_HINT_MASK
3219                                 | GDK_BUTTON1_MOTION_MASK
3220                                 | GDK_BUTTON_RELEASE_MASK,
3221                                NULL,
3222                                event->time) != GDK_GRAB_SUCCESS)
3223             return FALSE;
3224
3225           gtk_grab_add (widget);
3226           tree_view->priv->in_column_resize = TRUE;
3227
3228           _gtk_tree_view_column_set_resized_width (column, gtk_tree_view_column_get_width (column) -
3229                                                    tree_view->priv->last_extra_space_per_column);
3230
3231           /* block attached dnd signal handler */
3232           drag_data = g_object_get_data (G_OBJECT (widget), "gtk-site-data");
3233           if (drag_data)
3234             g_signal_handlers_block_matched (widget,
3235                                              G_SIGNAL_MATCH_DATA,
3236                                              0, 0, NULL, NULL,
3237                                              drag_data);
3238
3239           tree_view->priv->drag_pos = i;
3240           tree_view->priv->x_drag = gtk_tree_view_column_get_x_offset (column) + (rtl ? 0 : gtk_tree_view_column_get_width (column));
3241
3242           if (!gtk_widget_has_focus (widget))
3243             gtk_widget_grab_focus (widget);
3244
3245           return TRUE;
3246         }
3247     }
3248   return FALSE;
3249 }
3250
3251 /* GtkWidget::button_release_event helper */
3252 static gboolean
3253 gtk_tree_view_button_release_drag_column (GtkWidget      *widget,
3254                                           GdkEventButton *event)
3255 {
3256   GtkTreeView *tree_view;
3257   GtkWidget *button;
3258   GList *l;
3259   gboolean rtl;
3260   GdkDevice *device, *other;
3261
3262   tree_view = GTK_TREE_VIEW (widget);
3263
3264   rtl = (gtk_widget_get_direction (widget) == GTK_TEXT_DIR_RTL);
3265   device = gdk_event_get_device ((GdkEvent*)event);
3266   other = gdk_device_get_associated_device (device);
3267   gdk_device_ungrab (device, event->time);
3268   gdk_device_ungrab (other, event->time);
3269
3270   /* Move the button back */
3271   button = gtk_tree_view_column_get_button (tree_view->priv->drag_column);
3272   g_object_ref (button);
3273   gtk_container_remove (GTK_CONTAINER (tree_view), button);
3274   gtk_widget_set_parent_window (button, tree_view->priv->header_window);
3275   gtk_widget_set_parent (button, GTK_WIDGET (tree_view));
3276   g_object_unref (button);
3277   gtk_widget_queue_resize (widget);
3278   if (gtk_tree_view_column_get_resizable (tree_view->priv->drag_column))
3279     {
3280       gdk_window_raise (_gtk_tree_view_column_get_window (tree_view->priv->drag_column));
3281       gdk_window_show (_gtk_tree_view_column_get_window (tree_view->priv->drag_column));
3282     }
3283   else
3284     gdk_window_hide (_gtk_tree_view_column_get_window (tree_view->priv->drag_column));
3285
3286   gtk_widget_grab_focus (button);
3287
3288   if (rtl)
3289     {
3290       if (tree_view->priv->cur_reorder &&
3291           tree_view->priv->cur_reorder->right_column != tree_view->priv->drag_column)
3292         gtk_tree_view_move_column_after (tree_view, tree_view->priv->drag_column,
3293                                          tree_view->priv->cur_reorder->right_column);
3294     }
3295   else
3296     {
3297       if (tree_view->priv->cur_reorder &&
3298           tree_view->priv->cur_reorder->left_column != tree_view->priv->drag_column)
3299         gtk_tree_view_move_column_after (tree_view, tree_view->priv->drag_column,
3300                                          tree_view->priv->cur_reorder->left_column);
3301     }
3302   tree_view->priv->drag_column = NULL;
3303   gdk_window_hide (tree_view->priv->drag_window);
3304
3305   for (l = tree_view->priv->column_drag_info; l != NULL; l = l->next)
3306     g_slice_free (GtkTreeViewColumnReorder, l->data);
3307   g_list_free (tree_view->priv->column_drag_info);
3308   tree_view->priv->column_drag_info = NULL;
3309   tree_view->priv->cur_reorder = NULL;
3310
3311   if (tree_view->priv->drag_highlight_window)
3312     gdk_window_hide (tree_view->priv->drag_highlight_window);
3313
3314   /* Reset our flags */
3315   tree_view->priv->drag_column_window_state = DRAG_COLUMN_WINDOW_STATE_UNSET;
3316   tree_view->priv->in_column_drag = FALSE;
3317
3318   return TRUE;
3319 }
3320
3321 /* GtkWidget::button_release_event helper */
3322 static gboolean
3323 gtk_tree_view_button_release_column_resize (GtkWidget      *widget,
3324                                             GdkEventButton *event)
3325 {
3326   GtkTreeView *tree_view;
3327   gpointer drag_data;
3328
3329   tree_view = GTK_TREE_VIEW (widget);
3330
3331   tree_view->priv->drag_pos = -1;
3332
3333   /* unblock attached dnd signal handler */
3334   drag_data = g_object_get_data (G_OBJECT (widget), "gtk-site-data");
3335   if (drag_data)
3336     g_signal_handlers_unblock_matched (widget,
3337                                        G_SIGNAL_MATCH_DATA,
3338                                        0, 0, NULL, NULL,
3339                                        drag_data);
3340
3341   tree_view->priv->in_column_resize = FALSE;
3342   gtk_grab_remove (widget);
3343   gdk_device_ungrab (gdk_event_get_device ((GdkEvent*)event), event->time);
3344   return TRUE;
3345 }
3346
3347 static gboolean
3348 gtk_tree_view_button_release (GtkWidget      *widget,
3349                               GdkEventButton *event)
3350 {
3351   GtkTreeView *tree_view = GTK_TREE_VIEW (widget);
3352
3353   if (tree_view->priv->in_column_drag)
3354     return gtk_tree_view_button_release_drag_column (widget, event);
3355
3356   if (tree_view->priv->rubber_band_status)
3357     gtk_tree_view_stop_rubber_band (tree_view);
3358
3359   if (tree_view->priv->pressed_button == event->button)
3360     tree_view->priv->pressed_button = -1;
3361
3362   if (tree_view->priv->in_column_resize)
3363     return gtk_tree_view_button_release_column_resize (widget, event);
3364
3365   if (tree_view->priv->button_pressed_node == NULL)
3366     return FALSE;
3367
3368   if (event->button == 1)
3369     {
3370       if (tree_view->priv->button_pressed_node == tree_view->priv->prelight_node &&
3371           tree_view->priv->arrow_prelit)
3372         {
3373           GtkTreePath *path = NULL;
3374
3375           path = _gtk_tree_path_new_from_rbtree (tree_view->priv->button_pressed_tree,
3376                                                  tree_view->priv->button_pressed_node);
3377           /* Actually activate the node */
3378           if (tree_view->priv->button_pressed_node->children == NULL)
3379             gtk_tree_view_real_expand_row (tree_view, path,
3380                                            tree_view->priv->button_pressed_tree,
3381                                            tree_view->priv->button_pressed_node,
3382                                            FALSE, TRUE);
3383           else
3384             gtk_tree_view_real_collapse_row (GTK_TREE_VIEW (widget), path,
3385                                              tree_view->priv->button_pressed_tree,
3386                                              tree_view->priv->button_pressed_node, TRUE);
3387           gtk_tree_path_free (path);
3388         }
3389
3390       gtk_grab_remove (widget);
3391       tree_view->priv->button_pressed_tree = NULL;
3392       tree_view->priv->button_pressed_node = NULL;
3393     }
3394
3395   return TRUE;
3396 }
3397
3398 static gboolean
3399 gtk_tree_view_grab_broken (GtkWidget          *widget,
3400                            GdkEventGrabBroken *event)
3401 {
3402   GtkTreeView *tree_view = GTK_TREE_VIEW (widget);
3403
3404   if (tree_view->priv->in_column_drag)
3405     gtk_tree_view_button_release_drag_column (widget, (GdkEventButton *)event);
3406
3407   if (tree_view->priv->in_column_resize)
3408     gtk_tree_view_button_release_column_resize (widget, (GdkEventButton *)event);
3409
3410   return TRUE;
3411 }
3412
3413 #if 0
3414 static gboolean
3415 gtk_tree_view_configure (GtkWidget *widget,
3416                          GdkEventConfigure *event)
3417 {
3418   GtkTreeView *tree_view;
3419
3420   tree_view = GTK_TREE_VIEW (widget);
3421   tree_view->priv->search_position_func (tree_view, tree_view->priv->search_window);
3422
3423   return FALSE;
3424 }
3425 #endif
3426
3427 /* GtkWidget::motion_event function set.
3428  */
3429
3430 static gboolean
3431 coords_are_over_arrow (GtkTreeView *tree_view,
3432                        GtkRBTree   *tree,
3433                        GtkRBNode   *node,
3434                        /* these are in bin window coords */
3435                        gint         x,
3436                        gint         y)
3437 {
3438   GdkRectangle arrow;
3439   gint x2;
3440
3441   if (!gtk_widget_get_realized (GTK_WIDGET (tree_view)))
3442     return FALSE;
3443
3444   if ((node->flags & GTK_RBNODE_IS_PARENT) == 0)
3445     return FALSE;
3446
3447   arrow.y = gtk_tree_view_get_row_y_offset (tree_view, tree, node);
3448   arrow.height = gtk_tree_view_get_row_height (tree_view, node);
3449
3450   gtk_tree_view_get_arrow_xrange (tree_view, tree, &arrow.x, &x2);
3451
3452   arrow.width = x2 - arrow.x;
3453
3454   return (x >= arrow.x &&
3455           x < (arrow.x + arrow.width) &&
3456           y >= arrow.y &&
3457           y < (arrow.y + arrow.height));
3458 }
3459
3460 static gboolean
3461 auto_expand_timeout (gpointer data)
3462 {
3463   GtkTreeView *tree_view = GTK_TREE_VIEW (data);
3464   GtkTreePath *path;
3465
3466   if (tree_view->priv->prelight_node)
3467     {
3468       path = _gtk_tree_path_new_from_rbtree (tree_view->priv->prelight_tree,
3469                                              tree_view->priv->prelight_node);
3470
3471       if (tree_view->priv->prelight_node->children)
3472         gtk_tree_view_collapse_row (tree_view, path);
3473       else
3474         gtk_tree_view_expand_row (tree_view, path, FALSE);
3475
3476       gtk_tree_path_free (path);
3477     }
3478
3479   tree_view->priv->auto_expand_timeout = 0;
3480
3481   return FALSE;
3482 }
3483
3484 static void
3485 remove_auto_expand_timeout (GtkTreeView *tree_view)
3486 {
3487   if (tree_view->priv->auto_expand_timeout != 0)
3488     {
3489       g_source_remove (tree_view->priv->auto_expand_timeout);
3490       tree_view->priv->auto_expand_timeout = 0;
3491     }
3492 }
3493
3494 static void
3495 do_prelight (GtkTreeView *tree_view,
3496              GtkRBTree   *tree,
3497              GtkRBNode   *node,
3498              /* these are in bin_window coords */
3499              gint         x,
3500              gint         y)
3501 {
3502   if (tree_view->priv->prelight_tree == tree &&
3503       tree_view->priv->prelight_node == node)
3504     {
3505       /*  We are still on the same node,
3506           but we might need to take care of the arrow  */
3507
3508       if (tree && node && gtk_tree_view_draw_expanders (tree_view))
3509         {
3510           gboolean over_arrow;
3511
3512           over_arrow = coords_are_over_arrow (tree_view, tree, node, x, y);
3513
3514           if (over_arrow != tree_view->priv->arrow_prelit)
3515             {
3516               if (over_arrow)
3517                 tree_view->priv->arrow_prelit = TRUE;
3518               else
3519                 tree_view->priv->arrow_prelit = FALSE;
3520
3521               gtk_tree_view_queue_draw_arrow (tree_view, tree, node);
3522             }
3523         }
3524
3525       return;
3526     }
3527
3528   if (tree_view->priv->prelight_tree && tree_view->priv->prelight_node)
3529     {
3530       /*  Unprelight the old node and arrow  */
3531
3532       GTK_RBNODE_UNSET_FLAG (tree_view->priv->prelight_node,
3533                              GTK_RBNODE_IS_PRELIT);
3534
3535       if (tree_view->priv->arrow_prelit
3536           && gtk_tree_view_draw_expanders (tree_view))
3537         {
3538           tree_view->priv->arrow_prelit = FALSE;
3539
3540           gtk_tree_view_queue_draw_arrow (tree_view,
3541                                           tree_view->priv->prelight_tree,
3542                                           tree_view->priv->prelight_node);
3543         }
3544
3545       _gtk_tree_view_queue_draw_node (tree_view,
3546                                       tree_view->priv->prelight_tree,
3547                                       tree_view->priv->prelight_node,
3548                                       NULL);
3549     }
3550
3551
3552   if (tree_view->priv->hover_expand)
3553     remove_auto_expand_timeout (tree_view);
3554
3555   /*  Set the new prelight values  */
3556   tree_view->priv->prelight_node = node;
3557   tree_view->priv->prelight_tree = tree;
3558
3559   if (!node || !tree)
3560     return;
3561
3562   /*  Prelight the new node and arrow  */
3563
3564   if (gtk_tree_view_draw_expanders (tree_view)
3565       && coords_are_over_arrow (tree_view, tree, node, x, y))
3566     {
3567       tree_view->priv->arrow_prelit = TRUE;
3568
3569       gtk_tree_view_queue_draw_arrow (tree_view, tree, node);
3570     }
3571
3572   GTK_RBNODE_SET_FLAG (node, GTK_RBNODE_IS_PRELIT);
3573
3574   _gtk_tree_view_queue_draw_node (tree_view, tree, node, NULL);
3575
3576   if (tree_view->priv->hover_expand)
3577     {
3578       tree_view->priv->auto_expand_timeout =
3579         gdk_threads_add_timeout (AUTO_EXPAND_TIMEOUT, auto_expand_timeout, tree_view);
3580     }
3581 }
3582
3583 static void
3584 prelight_or_select (GtkTreeView *tree_view,
3585                     GtkRBTree   *tree,
3586                     GtkRBNode   *node,
3587                     /* these are in bin_window coords */
3588                     gint         x,
3589                     gint         y)
3590 {
3591   GtkSelectionMode mode = gtk_tree_selection_get_mode (tree_view->priv->selection);
3592
3593   if (tree_view->priv->hover_selection &&
3594       (mode == GTK_SELECTION_SINGLE || mode == GTK_SELECTION_BROWSE) &&
3595       !(tree_view->priv->edited_column &&
3596         gtk_cell_area_get_edit_widget
3597         (gtk_cell_layout_get_area (GTK_CELL_LAYOUT (tree_view->priv->edited_column)))))
3598     {
3599       if (node)
3600         {
3601           if (!GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_SELECTED))
3602             {
3603               GtkTreePath *path;
3604
3605               path = _gtk_tree_path_new_from_rbtree (tree, node);
3606               gtk_tree_selection_select_path (tree_view->priv->selection, path);
3607               if (GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_SELECTED))
3608                 {
3609                   tree_view->priv->draw_keyfocus = FALSE;
3610                   gtk_tree_view_real_set_cursor (tree_view, path, 0);
3611                 }
3612               gtk_tree_path_free (path);
3613             }
3614         }
3615
3616       else if (mode == GTK_SELECTION_SINGLE)
3617         gtk_tree_selection_unselect_all (tree_view->priv->selection);
3618     }
3619
3620     do_prelight (tree_view, tree, node, x, y);
3621 }
3622
3623 static void
3624 ensure_unprelighted (GtkTreeView *tree_view)
3625 {
3626   do_prelight (tree_view,
3627                NULL, NULL,
3628                -1000, -1000); /* coords not possibly over an arrow */
3629
3630   g_assert (tree_view->priv->prelight_node == NULL);
3631 }
3632
3633 static void
3634 update_prelight (GtkTreeView *tree_view,
3635                  gint         x,
3636                  gint         y)
3637 {
3638   int new_y;
3639   GtkRBTree *tree;
3640   GtkRBNode *node;
3641
3642   if (tree_view->priv->tree == NULL)
3643     return;
3644
3645   if (x == -10000)
3646     {
3647       ensure_unprelighted (tree_view);
3648       return;
3649     }
3650
3651   new_y = TREE_WINDOW_Y_TO_RBTREE_Y (tree_view, y);
3652   if (new_y < 0)
3653     new_y = 0;
3654
3655   _gtk_rbtree_find_offset (tree_view->priv->tree,
3656                            new_y, &tree, &node);
3657
3658   if (node)
3659     prelight_or_select (tree_view, tree, node, x, y);
3660 }
3661
3662
3663
3664
3665 /* Our motion arrow is either a box (in the case of the original spot)
3666  * or an arrow.  It is expander_size wide.
3667  */
3668 /*
3669  * 11111111111111
3670  * 01111111111110
3671  * 00111111111100
3672  * 00011111111000
3673  * 00001111110000
3674  * 00000111100000
3675  * 00000111100000
3676  * 00000111100000
3677  * ~ ~ ~ ~ ~ ~ ~
3678  * 00000111100000
3679  * 00000111100000
3680  * 00000111100000
3681  * 00001111110000
3682  * 00011111111000
3683  * 00111111111100
3684  * 01111111111110
3685  * 11111111111111
3686  */
3687
3688 static void
3689 gtk_tree_view_motion_draw_column_motion_arrow (GtkTreeView *tree_view)
3690 {
3691   GtkTreeViewColumnReorder *reorder = tree_view->priv->cur_reorder;
3692   GtkWidget *widget = GTK_WIDGET (tree_view);
3693   cairo_surface_t *mask_image;
3694   cairo_region_t *mask_region;
3695   gint x;
3696   gint y;
3697   gint width;
3698   gint height;
3699   gint arrow_type = DRAG_COLUMN_WINDOW_STATE_UNSET;
3700   GdkWindowAttr attributes;
3701   guint attributes_mask;
3702   cairo_t *cr;
3703
3704   if (!reorder ||
3705       reorder->left_column == tree_view->priv->drag_column ||
3706       reorder->right_column == tree_view->priv->drag_column)
3707     arrow_type = DRAG_COLUMN_WINDOW_STATE_ORIGINAL;
3708   else if (reorder->left_column || reorder->right_column)
3709     {
3710       GtkAllocation left_allocation, right_allocation;
3711       GdkRectangle visible_rect;
3712       GtkWidget *button;
3713
3714       gtk_tree_view_get_visible_rect (tree_view, &visible_rect);
3715       if (reorder->left_column)
3716         {
3717           button = gtk_tree_view_column_get_button (reorder->left_column);
3718           gtk_widget_get_allocation (button, &left_allocation);
3719           x = left_allocation.x + left_allocation.width;
3720         }
3721       else
3722         {
3723           button = gtk_tree_view_column_get_button (reorder->right_column);
3724           gtk_widget_get_allocation (button, &right_allocation);
3725           x = right_allocation.x;
3726         }
3727
3728       if (x < visible_rect.x)
3729         arrow_type = DRAG_COLUMN_WINDOW_STATE_ARROW_LEFT;
3730       else if (x > visible_rect.x + visible_rect.width)
3731         arrow_type = DRAG_COLUMN_WINDOW_STATE_ARROW_RIGHT;
3732       else
3733         arrow_type = DRAG_COLUMN_WINDOW_STATE_ARROW;
3734     }
3735
3736   /* We want to draw the rectangle over the initial location. */
3737   if (arrow_type == DRAG_COLUMN_WINDOW_STATE_ORIGINAL)
3738     {
3739       if (tree_view->priv->drag_column_window_state != DRAG_COLUMN_WINDOW_STATE_ORIGINAL)
3740         {
3741           GtkAllocation drag_allocation;
3742           GtkWidget    *button;
3743
3744           if (tree_view->priv->drag_highlight_window)
3745             {
3746               gdk_window_set_user_data (tree_view->priv->drag_highlight_window,
3747                                         NULL);
3748               gdk_window_destroy (tree_view->priv->drag_highlight_window);
3749             }
3750
3751           button = gtk_tree_view_column_get_button (tree_view->priv->drag_column);
3752           attributes.window_type = GDK_WINDOW_CHILD;
3753           attributes.wclass = GDK_INPUT_OUTPUT;
3754           attributes.x = tree_view->priv->drag_column_x;
3755           attributes.y = 0;
3756           gtk_widget_get_allocation (button, &drag_allocation);
3757           width = attributes.width = drag_allocation.width;
3758           height = attributes.height = drag_allocation.height;
3759           attributes.visual = gtk_widget_get_visual (GTK_WIDGET (tree_view));
3760           attributes.event_mask = GDK_VISIBILITY_NOTIFY_MASK | GDK_EXPOSURE_MASK | GDK_POINTER_MOTION_MASK;
3761           attributes_mask = GDK_WA_X | GDK_WA_Y | GDK_WA_VISUAL;
3762           tree_view->priv->drag_highlight_window = gdk_window_new (tree_view->priv->header_window, &attributes, attributes_mask);
3763           gdk_window_set_user_data (tree_view->priv->drag_highlight_window, GTK_WIDGET (tree_view));
3764
3765           mask_image = cairo_image_surface_create (CAIRO_FORMAT_A1, width, height);
3766           cr = cairo_create (mask_image);
3767
3768           cairo_rectangle (cr, 1, 1, width - 2, height - 2);
3769           cairo_stroke (cr);
3770           cairo_destroy (cr);
3771
3772           mask_region = gdk_cairo_region_create_from_surface (mask_image);
3773           gdk_window_shape_combine_region (tree_view->priv->drag_highlight_window,
3774                                            mask_region, 0, 0);
3775
3776           cairo_region_destroy (mask_region);
3777           cairo_surface_destroy (mask_image);
3778
3779           tree_view->priv->drag_column_window_state = DRAG_COLUMN_WINDOW_STATE_ORIGINAL;
3780         }
3781     }
3782   else if (arrow_type == DRAG_COLUMN_WINDOW_STATE_ARROW)
3783     {
3784       GtkAllocation button_allocation;
3785       GtkWidget    *button;
3786
3787       width = tree_view->priv->expander_size;
3788
3789       /* Get x, y, width, height of arrow */
3790       gdk_window_get_origin (tree_view->priv->header_window, &x, &y);
3791       if (reorder->left_column)
3792         {
3793           button = gtk_tree_view_column_get_button (reorder->left_column);
3794           gtk_widget_get_allocation (button, &button_allocation);
3795           x += button_allocation.x + button_allocation.width - width/2;
3796           height = button_allocation.height;
3797         }
3798       else
3799         {
3800           button = gtk_tree_view_column_get_button (reorder->right_column);
3801           gtk_widget_get_allocation (button, &button_allocation);
3802           x += button_allocation.x - width/2;
3803           height = button_allocation.height;
3804         }
3805       y -= tree_view->priv->expander_size/2; /* The arrow takes up only half the space */
3806       height += tree_view->priv->expander_size;
3807
3808       /* Create the new window */
3809       if (tree_view->priv->drag_column_window_state != DRAG_COLUMN_WINDOW_STATE_ARROW)
3810         {
3811           if (tree_view->priv->drag_highlight_window)
3812             {
3813               gdk_window_set_user_data (tree_view->priv->drag_highlight_window,
3814                                         NULL);
3815               gdk_window_destroy (tree_view->priv->drag_highlight_window);
3816             }
3817
3818           attributes.window_type = GDK_WINDOW_TEMP;
3819           attributes.wclass = GDK_INPUT_OUTPUT;
3820           attributes.visual = gtk_widget_get_visual (GTK_WIDGET (tree_view));
3821           attributes.event_mask = GDK_VISIBILITY_NOTIFY_MASK | GDK_EXPOSURE_MASK | GDK_POINTER_MOTION_MASK;
3822           attributes_mask = GDK_WA_X | GDK_WA_Y | GDK_WA_VISUAL;
3823           attributes.x = x;
3824           attributes.y = y;
3825           attributes.width = width;
3826           attributes.height = height;
3827           tree_view->priv->drag_highlight_window = gdk_window_new (gtk_widget_get_root_window (widget),
3828                                                                    &attributes, attributes_mask);
3829           gdk_window_set_user_data (tree_view->priv->drag_highlight_window, GTK_WIDGET (tree_view));
3830
3831           mask_image = cairo_image_surface_create (CAIRO_FORMAT_A1, width, height);
3832
3833           cr = cairo_create (mask_image);
3834           cairo_move_to (cr, 0, 0);
3835           cairo_line_to (cr, width, 0);
3836           cairo_line_to (cr, width / 2., width / 2);
3837           cairo_move_to (cr, 0, height);
3838           cairo_line_to (cr, width, height);
3839           cairo_line_to (cr, width / 2., height - width / 2.);
3840           cairo_fill (cr);
3841           cairo_destroy (cr);
3842
3843           mask_region = gdk_cairo_region_create_from_surface (mask_image);
3844           gdk_window_shape_combine_region (tree_view->priv->drag_highlight_window,
3845                                            mask_region, 0, 0);
3846
3847           cairo_region_destroy (mask_region);
3848           cairo_surface_destroy (mask_image);
3849         }
3850
3851       tree_view->priv->drag_column_window_state = DRAG_COLUMN_WINDOW_STATE_ARROW;
3852       gdk_window_move (tree_view->priv->drag_highlight_window, x, y);
3853     }
3854   else if (arrow_type == DRAG_COLUMN_WINDOW_STATE_ARROW_LEFT ||
3855            arrow_type == DRAG_COLUMN_WINDOW_STATE_ARROW_RIGHT)
3856     {
3857       GtkAllocation allocation;
3858       GtkWidget    *button;
3859
3860       width = tree_view->priv->expander_size;
3861
3862       /* Get x, y, width, height of arrow */
3863       width = width/2; /* remember, the arrow only takes half the available width */
3864       gdk_window_get_origin (gtk_widget_get_window (widget),
3865                              &x, &y);
3866       if (arrow_type == DRAG_COLUMN_WINDOW_STATE_ARROW_RIGHT)
3867         {
3868           gtk_widget_get_allocation (widget, &allocation);
3869           x += allocation.width - width;
3870         }
3871
3872       if (reorder->left_column)
3873         {
3874           button = gtk_tree_view_column_get_button (reorder->left_column);
3875           gtk_widget_get_allocation (button, &allocation);
3876           height = allocation.height;
3877         }
3878       else
3879         {
3880           button = gtk_tree_view_column_get_button (reorder->right_column);
3881           gtk_widget_get_allocation (button, &allocation);
3882           height = allocation.height;
3883         }
3884
3885       y -= tree_view->priv->expander_size;
3886       height += 2*tree_view->priv->expander_size;
3887
3888       /* Create the new window */
3889       if (tree_view->priv->drag_column_window_state != DRAG_COLUMN_WINDOW_STATE_ARROW_LEFT &&
3890           tree_view->priv->drag_column_window_state != DRAG_COLUMN_WINDOW_STATE_ARROW_RIGHT)
3891         {
3892           if (tree_view->priv->drag_highlight_window)
3893             {
3894               gdk_window_set_user_data (tree_view->priv->drag_highlight_window,
3895                                         NULL);
3896               gdk_window_destroy (tree_view->priv->drag_highlight_window);
3897             }
3898
3899           attributes.window_type = GDK_WINDOW_TEMP;
3900           attributes.wclass = GDK_INPUT_OUTPUT;
3901           attributes.visual = gtk_widget_get_visual (GTK_WIDGET (tree_view));
3902           attributes.event_mask = GDK_VISIBILITY_NOTIFY_MASK | GDK_EXPOSURE_MASK | GDK_POINTER_MOTION_MASK;
3903           attributes_mask = GDK_WA_X | GDK_WA_Y | GDK_WA_VISUAL;
3904           attributes.x = x;
3905           attributes.y = y;
3906           attributes.width = width;
3907           attributes.height = height;
3908           tree_view->priv->drag_highlight_window = gdk_window_new (NULL, &attributes, attributes_mask);
3909           gdk_window_set_user_data (tree_view->priv->drag_highlight_window, GTK_WIDGET (tree_view));
3910
3911           mask_image = cairo_image_surface_create (CAIRO_FORMAT_A1, width, height);
3912
3913           cr = cairo_create (mask_image);
3914           /* mirror if we're on the left */
3915           if (arrow_type == DRAG_COLUMN_WINDOW_STATE_ARROW_LEFT)
3916             {
3917               cairo_translate (cr, width, 0);
3918               cairo_scale (cr, -1, 1);
3919             }
3920           cairo_move_to (cr, 0, 0);
3921           cairo_line_to (cr, width, width);
3922           cairo_line_to (cr, 0, tree_view->priv->expander_size);
3923           cairo_move_to (cr, 0, height);
3924           cairo_line_to (cr, width, height - width);
3925           cairo_line_to (cr, 0, height - tree_view->priv->expander_size);
3926           cairo_fill (cr);
3927           cairo_destroy (cr);
3928
3929           mask_region = gdk_cairo_region_create_from_surface (mask_image);
3930           gdk_window_shape_combine_region (tree_view->priv->drag_highlight_window,
3931                                            mask_region, 0, 0);
3932
3933           cairo_region_destroy (mask_region);
3934           cairo_surface_destroy (mask_image);
3935         }
3936
3937       tree_view->priv->drag_column_window_state = arrow_type;
3938       gdk_window_move (tree_view->priv->drag_highlight_window, x, y);
3939    }
3940   else
3941     {
3942       g_warning (G_STRLOC"Invalid GtkTreeViewColumnReorder struct");
3943       gdk_window_hide (tree_view->priv->drag_highlight_window);
3944       return;
3945     }
3946
3947   gdk_window_show (tree_view->priv->drag_highlight_window);
3948   gdk_window_raise (tree_view->priv->drag_highlight_window);
3949 }
3950
3951 static gboolean
3952 gtk_tree_view_motion_resize_column (GtkWidget      *widget,
3953                                     GdkEventMotion *event)
3954 {
3955   gint x;
3956   gint new_width;
3957   GtkTreeViewColumn *column;
3958   GtkTreeView *tree_view = GTK_TREE_VIEW (widget);
3959
3960   column = gtk_tree_view_get_column (tree_view, tree_view->priv->drag_pos);
3961
3962   if (event->is_hint || event->window != gtk_widget_get_window (widget))
3963     gdk_window_get_device_position (gtk_widget_get_window (widget),
3964                                     gdk_event_get_device ((GdkEvent *) event),
3965                                     &x, NULL, NULL);
3966   else
3967     x = event->x;
3968
3969   if (tree_view->priv->hadjustment)
3970     x += gtk_adjustment_get_value (tree_view->priv->hadjustment);
3971
3972   new_width = gtk_tree_view_new_column_width (tree_view,
3973                                               tree_view->priv->drag_pos, &x);
3974   if (x != tree_view->priv->x_drag &&
3975       (new_width != gtk_tree_view_column_get_fixed_width (column)))
3976     {
3977       _gtk_tree_view_column_set_use_resized_width (column, TRUE);
3978
3979       if (gtk_tree_view_column_get_expand (column))
3980         new_width -= tree_view->priv->last_extra_space_per_column;
3981
3982       _gtk_tree_view_column_set_resized_width (column, new_width);
3983
3984
3985       gtk_widget_queue_resize (widget);
3986     }
3987
3988   return FALSE;
3989 }
3990
3991
3992 static void
3993 gtk_tree_view_update_current_reorder (GtkTreeView *tree_view,
3994                                       GdkEvent    *event)
3995 {
3996   GtkTreeViewColumnReorder *reorder = NULL;
3997   GList *list;
3998   gint mouse_x;
3999
4000   gdk_window_get_device_position (tree_view->priv->header_window,
4001                                   gdk_event_get_device (event),
4002                                   &mouse_x, NULL, NULL);
4003   for (list = tree_view->priv->column_drag_info; list; list = list->next)
4004     {
4005       reorder = (GtkTreeViewColumnReorder *) list->data;
4006       if (mouse_x >= reorder->left_align && mouse_x < reorder->right_align)
4007         break;
4008       reorder = NULL;
4009     }
4010
4011   /*  if (reorder && reorder == tree_view->priv->cur_reorder)
4012       return;*/
4013
4014   tree_view->priv->cur_reorder = reorder;
4015   gtk_tree_view_motion_draw_column_motion_arrow (tree_view);
4016 }
4017
4018 static void
4019 gtk_tree_view_vertical_autoscroll (GtkTreeView *tree_view)
4020 {
4021   GdkRectangle visible_rect;
4022   gint y;
4023   gint offset;
4024
4025   gdk_window_get_device_position (tree_view->priv->bin_window,
4026                                   gdk_device_manager_get_client_pointer (
4027                                     gdk_display_get_device_manager (
4028                                       gtk_widget_get_display (GTK_WIDGET (tree_view)))),
4029                                   NULL, &y, NULL);
4030   y += tree_view->priv->dy;
4031
4032   gtk_tree_view_get_visible_rect (tree_view, &visible_rect);
4033
4034   /* see if we are near the edge. */
4035   offset = y - (visible_rect.y + 2 * SCROLL_EDGE_SIZE);
4036   if (offset > 0)
4037     {
4038       offset = y - (visible_rect.y + visible_rect.height - 2 * SCROLL_EDGE_SIZE);
4039       if (offset < 0)
4040         return;
4041     }
4042
4043   gtk_adjustment_set_value (tree_view->priv->vadjustment,
4044                             MAX (gtk_adjustment_get_value (tree_view->priv->vadjustment) + offset, 0.0));
4045 }
4046
4047 static gboolean
4048 gtk_tree_view_horizontal_autoscroll (GtkTreeView *tree_view,
4049                                      GdkEvent    *event)
4050 {
4051   GdkRectangle visible_rect;
4052   gint x;
4053   gint offset;
4054
4055   gdk_window_get_device_position (tree_view->priv->bin_window,
4056                                   gdk_event_get_device (event),
4057                                   &x, NULL, NULL);
4058
4059   gtk_tree_view_get_visible_rect (tree_view, &visible_rect);
4060
4061   /* See if we are near the edge. */
4062   offset = x - (visible_rect.x + SCROLL_EDGE_SIZE);
4063   if (offset > 0)
4064     {
4065       offset = x - (visible_rect.x + visible_rect.width - SCROLL_EDGE_SIZE);
4066       if (offset < 0)
4067         return TRUE;
4068     }
4069   offset = offset/3;
4070
4071   gtk_adjustment_set_value (tree_view->priv->hadjustment,
4072                             MAX (gtk_adjustment_get_value (tree_view->priv->hadjustment) + offset, 0.0));
4073
4074   return TRUE;
4075
4076 }
4077
4078 static gboolean
4079 gtk_tree_view_motion_drag_column (GtkWidget      *widget,
4080                                   GdkEventMotion *event)
4081 {
4082   GtkAllocation allocation, button_allocation;
4083   GtkTreeView *tree_view = (GtkTreeView *) widget;
4084   GtkTreeViewColumn *column = tree_view->priv->drag_column;
4085   GtkWidget *button;
4086   gint x, y;
4087
4088   /* Sanity Check */
4089   if ((column == NULL) ||
4090       (event->window != tree_view->priv->drag_window))
4091     return FALSE;
4092
4093   button = gtk_tree_view_column_get_button (column);
4094
4095   /* Handle moving the header */
4096   gdk_window_get_position (tree_view->priv->drag_window, &x, &y);
4097   gtk_widget_get_allocation (widget, &allocation);
4098   gtk_widget_get_allocation (button, &button_allocation);
4099   x = CLAMP (x + (gint)event->x - _gtk_tree_view_column_get_drag_x (column), 0,
4100              MAX (tree_view->priv->width, allocation.width) - button_allocation.width);
4101   gdk_window_move (tree_view->priv->drag_window, x, y);
4102
4103   /* autoscroll, if needed */
4104   gtk_tree_view_horizontal_autoscroll (tree_view, (GdkEvent *) event);
4105   /* Update the current reorder position and arrow; */
4106   gtk_tree_view_update_current_reorder (tree_view, (GdkEvent *) event);
4107
4108   return TRUE;
4109 }
4110
4111 static void
4112 gtk_tree_view_stop_rubber_band (GtkTreeView *tree_view)
4113 {
4114   remove_scroll_timeout (tree_view);
4115   gtk_grab_remove (GTK_WIDGET (tree_view));
4116
4117   if (tree_view->priv->rubber_band_status == RUBBER_BAND_ACTIVE)
4118     {
4119       GtkTreePath *tmp_path;
4120
4121       gtk_widget_queue_draw (GTK_WIDGET (tree_view));
4122
4123       /* The anchor path should be set to the start path */
4124       tmp_path = _gtk_tree_path_new_from_rbtree (tree_view->priv->rubber_band_start_tree,
4125                                                  tree_view->priv->rubber_band_start_node);
4126
4127       if (tree_view->priv->anchor)
4128         gtk_tree_row_reference_free (tree_view->priv->anchor);
4129
4130       tree_view->priv->anchor =
4131         gtk_tree_row_reference_new_proxy (G_OBJECT (tree_view),
4132                                           tree_view->priv->model,
4133                                           tmp_path);
4134
4135       gtk_tree_path_free (tmp_path);
4136
4137       /* ... and the cursor to the end path */
4138       tmp_path = _gtk_tree_path_new_from_rbtree (tree_view->priv->rubber_band_end_tree,
4139                                                  tree_view->priv->rubber_band_end_node);
4140       gtk_tree_view_real_set_cursor (GTK_TREE_VIEW (tree_view), tmp_path, 0);
4141       gtk_tree_path_free (tmp_path);
4142
4143       _gtk_tree_selection_emit_changed (tree_view->priv->selection);
4144     }
4145
4146   /* Clear status variables */
4147   tree_view->priv->rubber_band_status = RUBBER_BAND_OFF;
4148   tree_view->priv->rubber_band_extend = FALSE;
4149   tree_view->priv->rubber_band_modify = FALSE;
4150
4151   tree_view->priv->rubber_band_start_node = NULL;
4152   tree_view->priv->rubber_band_start_tree = NULL;
4153   tree_view->priv->rubber_band_end_node = NULL;
4154   tree_view->priv->rubber_band_end_tree = NULL;
4155 }
4156
4157 static void
4158 gtk_tree_view_update_rubber_band_selection_range (GtkTreeView *tree_view,
4159                                                  GtkRBTree   *start_tree,
4160                                                  GtkRBNode   *start_node,
4161                                                  GtkRBTree   *end_tree,
4162                                                  GtkRBNode   *end_node,
4163                                                  gboolean     select,
4164                                                  gboolean     skip_start,
4165                                                  gboolean     skip_end)
4166 {
4167   if (start_node == end_node)
4168     return;
4169
4170   /* We skip the first node and jump inside the loop */
4171   if (skip_start)
4172     goto skip_first;
4173
4174   do
4175     {
4176       /* Small optimization by assuming insensitive nodes are never
4177        * selected.
4178        */
4179       if (!GTK_RBNODE_FLAG_SET (start_node, GTK_RBNODE_IS_SELECTED))
4180         {
4181           GtkTreePath *path;
4182           gboolean selectable;
4183
4184           path = _gtk_tree_path_new_from_rbtree (start_tree, start_node);
4185           selectable = _gtk_tree_selection_row_is_selectable (tree_view->priv->selection, start_node, path);
4186           gtk_tree_path_free (path);
4187
4188           if (!selectable)
4189             goto node_not_selectable;
4190         }
4191
4192       if (select)
4193         {
4194           if (tree_view->priv->rubber_band_extend)
4195             GTK_RBNODE_SET_FLAG (start_node, GTK_RBNODE_IS_SELECTED);
4196           else if (tree_view->priv->rubber_band_modify)
4197             {
4198               /* Toggle the selection state */
4199               if (GTK_RBNODE_FLAG_SET (start_node, GTK_RBNODE_IS_SELECTED))
4200                 GTK_RBNODE_UNSET_FLAG (start_node, GTK_RBNODE_IS_SELECTED);
4201               else
4202                 GTK_RBNODE_SET_FLAG (start_node, GTK_RBNODE_IS_SELECTED);
4203             }
4204           else
4205             GTK_RBNODE_SET_FLAG (start_node, GTK_RBNODE_IS_SELECTED);
4206         }
4207       else
4208         {
4209           /* Mirror the above */
4210           if (tree_view->priv->rubber_band_extend)
4211             GTK_RBNODE_UNSET_FLAG (start_node, GTK_RBNODE_IS_SELECTED);
4212           else if (tree_view->priv->rubber_band_modify)
4213             {
4214               /* Toggle the selection state */
4215               if (GTK_RBNODE_FLAG_SET (start_node, GTK_RBNODE_IS_SELECTED))
4216                 GTK_RBNODE_UNSET_FLAG (start_node, GTK_RBNODE_IS_SELECTED);
4217               else
4218                 GTK_RBNODE_SET_FLAG (start_node, GTK_RBNODE_IS_SELECTED);
4219             }
4220           else
4221             GTK_RBNODE_UNSET_FLAG (start_node, GTK_RBNODE_IS_SELECTED);
4222         }
4223
4224       _gtk_tree_view_queue_draw_node (tree_view, start_tree, start_node, NULL);
4225
4226 node_not_selectable:
4227       if (start_node == end_node)
4228         break;
4229
4230 skip_first:
4231
4232       if (start_node->children)
4233         {
4234           start_tree = start_node->children;
4235           start_node = _gtk_rbtree_first (start_tree);
4236         }
4237       else
4238         {
4239           _gtk_rbtree_next_full (start_tree, start_node, &start_tree, &start_node);
4240
4241           if (!start_tree)
4242             /* Ran out of tree */
4243             break;
4244         }
4245
4246       if (skip_end && start_node == end_node)
4247         break;
4248     }
4249   while (TRUE);
4250 }
4251
4252 static void
4253 gtk_tree_view_update_rubber_band_selection (GtkTreeView *tree_view)
4254 {
4255   GtkRBTree *start_tree, *end_tree;
4256   GtkRBNode *start_node, *end_node;
4257
4258   _gtk_rbtree_find_offset (tree_view->priv->tree, MIN (tree_view->priv->press_start_y, tree_view->priv->rubber_band_y), &start_tree, &start_node);
4259   _gtk_rbtree_find_offset (tree_view->priv->tree, MAX (tree_view->priv->press_start_y, tree_view->priv->rubber_band_y), &end_tree, &end_node);
4260
4261   /* Handle the start area first */
4262   if (!tree_view->priv->rubber_band_start_node)
4263     {
4264       gtk_tree_view_update_rubber_band_selection_range (tree_view,
4265                                                        start_tree,
4266                                                        start_node,
4267                                                        end_tree,
4268                                                        end_node,
4269                                                        TRUE,
4270                                                        FALSE,
4271                                                        FALSE);
4272     }
4273   else if (_gtk_rbtree_node_find_offset (start_tree, start_node) <
4274            _gtk_rbtree_node_find_offset (tree_view->priv->rubber_band_start_tree, tree_view->priv->rubber_band_start_node))
4275     {
4276       /* New node is above the old one; selection became bigger */
4277       gtk_tree_view_update_rubber_band_selection_range (tree_view,
4278                                                        start_tree,
4279                                                        start_node,
4280                                                        tree_view->priv->rubber_band_start_tree,
4281                                                        tree_view->priv->rubber_band_start_node,
4282                                                        TRUE,
4283                                                        FALSE,
4284                                                        TRUE);
4285     }
4286   else if (_gtk_rbtree_node_find_offset (start_tree, start_node) >
4287            _gtk_rbtree_node_find_offset (tree_view->priv->rubber_band_start_tree, tree_view->priv->rubber_band_start_node))
4288     {
4289       /* New node is below the old one; selection became smaller */
4290       gtk_tree_view_update_rubber_band_selection_range (tree_view,
4291                                                        tree_view->priv->rubber_band_start_tree,
4292                                                        tree_view->priv->rubber_band_start_node,
4293                                                        start_tree,
4294                                                        start_node,
4295                                                        FALSE,
4296                                                        FALSE,
4297                                                        TRUE);
4298     }
4299
4300   tree_view->priv->rubber_band_start_tree = start_tree;
4301   tree_view->priv->rubber_band_start_node = start_node;
4302
4303   /* Next, handle the end area */
4304   if (!tree_view->priv->rubber_band_end_node)
4305     {
4306       /* In the event this happens, start_node was also NULL; this case is
4307        * handled above.
4308        */
4309     }
4310   else if (!end_node)
4311     {
4312       /* Find the last node in the tree */
4313       _gtk_rbtree_find_offset (tree_view->priv->tree, tree_view->priv->height - 1,
4314                                &end_tree, &end_node);
4315
4316       /* Selection reached end of the tree */
4317       gtk_tree_view_update_rubber_band_selection_range (tree_view,
4318                                                        tree_view->priv->rubber_band_end_tree,
4319                                                        tree_view->priv->rubber_band_end_node,
4320                                                        end_tree,
4321                                                        end_node,
4322                                                        TRUE,
4323                                                        TRUE,
4324                                                        FALSE);
4325     }
4326   else if (_gtk_rbtree_node_find_offset (end_tree, end_node) >
4327            _gtk_rbtree_node_find_offset (tree_view->priv->rubber_band_end_tree, tree_view->priv->rubber_band_end_node))
4328     {
4329       /* New node is below the old one; selection became bigger */
4330       gtk_tree_view_update_rubber_band_selection_range (tree_view,
4331                                                        tree_view->priv->rubber_band_end_tree,
4332                                                        tree_view->priv->rubber_band_end_node,
4333                                                        end_tree,
4334                                                        end_node,
4335                                                        TRUE,
4336                                                        TRUE,
4337                                                        FALSE);
4338     }
4339   else if (_gtk_rbtree_node_find_offset (end_tree, end_node) <
4340            _gtk_rbtree_node_find_offset (tree_view->priv->rubber_band_end_tree, tree_view->priv->rubber_band_end_node))
4341     {
4342       /* New node is above the old one; selection became smaller */
4343       gtk_tree_view_update_rubber_band_selection_range (tree_view,
4344                                                        end_tree,
4345                                                        end_node,
4346                                                        tree_view->priv->rubber_band_end_tree,
4347                                                        tree_view->priv->rubber_band_end_node,
4348                                                        FALSE,
4349                                                        TRUE,
4350                                                        FALSE);
4351     }
4352
4353   tree_view->priv->rubber_band_end_tree = end_tree;
4354   tree_view->priv->rubber_band_end_node = end_node;
4355 }
4356
4357 static void
4358 gtk_tree_view_update_rubber_band (GtkTreeView *tree_view)
4359 {
4360   gint x, y;
4361   GdkRectangle old_area;
4362   GdkRectangle new_area;
4363   GdkRectangle common;
4364   cairo_region_t *invalid_region;
4365
4366   old_area.x = MIN (tree_view->priv->press_start_x, tree_view->priv->rubber_band_x);
4367   old_area.y = MIN (tree_view->priv->press_start_y, tree_view->priv->rubber_band_y) - tree_view->priv->dy;
4368   old_area.width = ABS (tree_view->priv->rubber_band_x - tree_view->priv->press_start_x) + 1;
4369   old_area.height = ABS (tree_view->priv->rubber_band_y - tree_view->priv->press_start_y) + 1;
4370
4371   gdk_window_get_device_position (tree_view->priv->bin_window,
4372                                   gdk_device_manager_get_client_pointer (
4373                                     gdk_display_get_device_manager (
4374                                       gtk_widget_get_display (GTK_WIDGET (tree_view)))),
4375                                   &x, &y, NULL);
4376
4377   x = MAX (x, 0);
4378   y = MAX (y, 0) + tree_view->priv->dy;
4379
4380   new_area.x = MIN (tree_view->priv->press_start_x, x);
4381   new_area.y = MIN (tree_view->priv->press_start_y, y) - tree_view->priv->dy;
4382   new_area.width = ABS (x - tree_view->priv->press_start_x) + 1;
4383   new_area.height = ABS (y - tree_view->priv->press_start_y) + 1;
4384
4385   invalid_region = cairo_region_create_rectangle (&old_area);
4386   cairo_region_union_rectangle (invalid_region, &new_area);
4387
4388   gdk_rectangle_intersect (&old_area, &new_area, &common);
4389   if (common.width > 2 && common.height > 2)
4390     {
4391       cairo_region_t *common_region;
4392
4393       /* make sure the border is invalidated */
4394       common.x += 1;
4395       common.y += 1;
4396       common.width -= 2;
4397       common.height -= 2;
4398
4399       common_region = cairo_region_create_rectangle (&common);
4400
4401       cairo_region_subtract (invalid_region, common_region);
4402       cairo_region_destroy (common_region);
4403     }
4404
4405   gdk_window_invalidate_region (tree_view->priv->bin_window, invalid_region, TRUE);
4406
4407   cairo_region_destroy (invalid_region);
4408
4409   tree_view->priv->rubber_band_x = x;
4410   tree_view->priv->rubber_band_y = y;
4411
4412   gtk_tree_view_update_rubber_band_selection (tree_view);
4413 }
4414
4415 static void
4416 gtk_tree_view_paint_rubber_band (GtkTreeView  *tree_view,
4417                                  cairo_t      *cr)
4418 {
4419   GdkRectangle rect;
4420   GtkStyleContext *context;
4421
4422   cairo_save (cr);
4423
4424   context = gtk_widget_get_style_context (GTK_WIDGET (tree_view));
4425
4426   gtk_style_context_save (context);
4427   gtk_style_context_add_class (context, GTK_STYLE_CLASS_RUBBERBAND);
4428
4429   rect.x = MIN (tree_view->priv->press_start_x, tree_view->priv->rubber_band_x);
4430   rect.y = MIN (tree_view->priv->press_start_y, tree_view->priv->rubber_band_y) - tree_view->priv->dy;
4431   rect.width = ABS (tree_view->priv->press_start_x - tree_view->priv->rubber_band_x) + 1;
4432   rect.height = ABS (tree_view->priv->press_start_y - tree_view->priv->rubber_band_y) + 1;
4433
4434   gdk_cairo_rectangle (cr, &rect);
4435   cairo_clip (cr);
4436
4437   gtk_render_background (context, cr,
4438                          rect.x, rect.y,
4439                          rect.width, rect.height);
4440   gtk_render_frame (context, cr,
4441                     rect.x, rect.y,
4442                     rect.width, rect.height);
4443
4444   gtk_style_context_restore (context);
4445   cairo_restore (cr);
4446 }
4447
4448 static gboolean
4449 gtk_tree_view_motion_bin_window (GtkWidget      *widget,
4450                                  GdkEventMotion *event)
4451 {
4452   GtkTreeView *tree_view;
4453   GtkRBTree *tree;
4454   GtkRBNode *node;
4455   gint new_y;
4456
4457   tree_view = (GtkTreeView *) widget;
4458
4459   if (tree_view->priv->tree == NULL)
4460     return FALSE;
4461
4462   if (tree_view->priv->rubber_band_status == RUBBER_BAND_MAYBE_START)
4463     {
4464       gtk_grab_add (GTK_WIDGET (tree_view));
4465       gtk_tree_view_update_rubber_band (tree_view);
4466
4467       tree_view->priv->rubber_band_status = RUBBER_BAND_ACTIVE;
4468     }
4469   else if (tree_view->priv->rubber_band_status == RUBBER_BAND_ACTIVE)
4470     {
4471       gtk_tree_view_update_rubber_band (tree_view);
4472
4473       add_scroll_timeout (tree_view);
4474     }
4475
4476   /* only check for an initiated drag when a button is pressed */
4477   if (tree_view->priv->pressed_button >= 0
4478       && !tree_view->priv->rubber_band_status)
4479     gtk_tree_view_maybe_begin_dragging_row (tree_view, event);
4480
4481   new_y = TREE_WINDOW_Y_TO_RBTREE_Y(tree_view, event->y);
4482   if (new_y < 0)
4483     new_y = 0;
4484
4485   _gtk_rbtree_find_offset (tree_view->priv->tree, new_y, &tree, &node);
4486
4487   /* If we are currently pressing down a button, we don't want to prelight anything else. */
4488   if ((tree_view->priv->button_pressed_node != NULL) &&
4489       (tree_view->priv->button_pressed_node != node))
4490     node = NULL;
4491
4492   tree_view->priv->event_last_x = event->x;
4493   tree_view->priv->event_last_y = event->y;
4494
4495   prelight_or_select (tree_view, tree, node, event->x, event->y);
4496
4497   return TRUE;
4498 }
4499
4500 static gboolean
4501 gtk_tree_view_motion (GtkWidget      *widget,
4502                       GdkEventMotion *event)
4503 {
4504   GtkTreeView *tree_view;
4505
4506   tree_view = (GtkTreeView *) widget;
4507
4508   /* Resizing a column */
4509   if (tree_view->priv->in_column_resize)
4510     return gtk_tree_view_motion_resize_column (widget, event);
4511
4512   /* Drag column */
4513   if (tree_view->priv->in_column_drag)
4514     return gtk_tree_view_motion_drag_column (widget, event);
4515
4516   /* Sanity check it */
4517   if (event->window == tree_view->priv->bin_window)
4518     return gtk_tree_view_motion_bin_window (widget, event);
4519
4520   return FALSE;
4521 }
4522
4523 /* Invalidate the focus rectangle near the edge of the bin_window; used when
4524  * the tree is empty.
4525  */
4526 static void
4527 invalidate_empty_focus (GtkTreeView *tree_view)
4528 {
4529   GdkRectangle area;
4530
4531   if (!gtk_widget_has_focus (GTK_WIDGET (tree_view)))
4532     return;
4533
4534   area.x = 0;
4535   area.y = 0;
4536   area.width = gdk_window_get_width (tree_view->priv->bin_window);
4537   area.height = gdk_window_get_height (tree_view->priv->bin_window);
4538   gdk_window_invalidate_rect (tree_view->priv->bin_window, &area, FALSE);
4539 }
4540
4541 /* Draws a focus rectangle near the edge of the bin_window; used when the tree
4542  * is empty.
4543  */
4544 static void
4545 draw_empty_focus (GtkTreeView *tree_view, cairo_t *cr)
4546 {
4547   GtkWidget *widget = GTK_WIDGET (tree_view);
4548   gint w, h;
4549
4550   if (!gtk_widget_has_visible_focus (widget))
4551     return;
4552
4553   w = gdk_window_get_width (tree_view->priv->bin_window) - 2;
4554   h = gdk_window_get_height (tree_view->priv->bin_window) - 2;
4555
4556   if (w > 0 && h > 0)
4557     {
4558       GtkStyleContext *context;
4559       GtkStateFlags state;
4560
4561       context = gtk_widget_get_style_context (widget);
4562       state = gtk_widget_get_state_flags (widget);
4563
4564       gtk_style_context_save (context);
4565       gtk_style_context_set_state (context, state);
4566
4567       gtk_render_focus (context, cr, 1, 1, w, h);
4568
4569       gtk_style_context_restore (context);
4570     }
4571 }
4572
4573 typedef enum {
4574   GTK_TREE_VIEW_GRID_LINE,
4575   GTK_TREE_VIEW_TREE_LINE,
4576   GTK_TREE_VIEW_FOREGROUND_LINE
4577 } GtkTreeViewLineType;
4578
4579 static void
4580 gtk_tree_view_draw_line (GtkTreeView         *tree_view,
4581                          cairo_t             *cr,
4582                          GtkTreeViewLineType  type,
4583                          int                  x1,
4584                          int                  y1,
4585                          int                  x2,
4586                          int                  y2)
4587 {
4588   cairo_save (cr);
4589
4590   switch (type)
4591     {
4592     case GTK_TREE_VIEW_TREE_LINE:
4593       cairo_set_source_rgb (cr, 0, 0, 0);
4594       cairo_set_line_width (cr, tree_view->priv->tree_line_width);
4595       if (tree_view->priv->tree_line_dashes[0])
4596         cairo_set_dash (cr,
4597                         tree_view->priv->tree_line_dashes,
4598                         2, 0.5);
4599       break;
4600     case GTK_TREE_VIEW_GRID_LINE:
4601       cairo_set_source_rgb (cr, 0, 0, 0);
4602       cairo_set_line_width (cr, tree_view->priv->grid_line_width);
4603       if (tree_view->priv->grid_line_dashes[0])
4604         cairo_set_dash (cr,
4605                         tree_view->priv->grid_line_dashes,
4606                         2, 0.5);
4607       break;
4608     default:
4609       g_assert_not_reached ();
4610       /* fall through */
4611     case GTK_TREE_VIEW_FOREGROUND_LINE:
4612       {
4613         GtkStyleContext *context;
4614         GtkStateFlags state;
4615         GdkRGBA color;
4616
4617         context = gtk_widget_get_style_context (GTK_WIDGET (tree_view));
4618         state = gtk_widget_get_state_flags (GTK_WIDGET (tree_view));
4619
4620         cairo_set_line_width (cr, 1.0);
4621         gtk_style_context_get_color (context, state, &color);
4622         gdk_cairo_set_source_rgba (cr, &color);
4623       }
4624
4625       break;
4626     }
4627
4628   cairo_move_to (cr, x1 + 0.5, y1 + 0.5);
4629   cairo_line_to (cr, x2 + 0.5, y2 + 0.5);
4630   cairo_stroke (cr);
4631
4632   cairo_restore (cr);
4633 }
4634
4635 static void
4636 gtk_tree_view_draw_grid_lines (GtkTreeView    *tree_view,
4637                                cairo_t        *cr,
4638                                gint            n_visible_columns)
4639 {
4640   GList *list = tree_view->priv->columns;
4641   gint i = 0;
4642   gint current_x = 0;
4643
4644   if (tree_view->priv->grid_lines != GTK_TREE_VIEW_GRID_LINES_VERTICAL
4645       && tree_view->priv->grid_lines != GTK_TREE_VIEW_GRID_LINES_BOTH)
4646     return;
4647
4648   /* Only draw the lines for visible rows and columns */
4649   for (list = tree_view->priv->columns; list; list = list->next, i++)
4650     {
4651       GtkTreeViewColumn *column = list->data;
4652
4653       /* We don't want a line for the last column */
4654       if (i == n_visible_columns - 1)
4655         break;
4656
4657       if (!gtk_tree_view_column_get_visible (column))
4658         continue;
4659
4660       current_x += gtk_tree_view_column_get_width (column);
4661
4662       gtk_tree_view_draw_line (tree_view, cr,
4663                                GTK_TREE_VIEW_GRID_LINE,
4664                                current_x - 1, 0,
4665                                current_x - 1, tree_view->priv->height);
4666     }
4667 }
4668
4669 /* Warning: Very scary function.
4670  * Modify at your own risk
4671  *
4672  * KEEP IN SYNC WITH gtk_tree_view_create_row_drag_icon()!
4673  * FIXME: It's not...
4674  */
4675 static gboolean
4676 gtk_tree_view_bin_draw (GtkWidget      *widget,
4677                         cairo_t        *cr)
4678 {
4679   GtkTreeView *tree_view = GTK_TREE_VIEW (widget);
4680   GtkTreePath *path;
4681   GtkRBTree *tree;
4682   GList *list;
4683   GtkRBNode *node;
4684   GtkRBNode *drag_highlight = NULL;
4685   GtkRBTree *drag_highlight_tree = NULL;
4686   GtkTreeIter iter;
4687   gint new_y;
4688   gint y_offset, cell_offset;
4689   gint max_height;
4690   gint depth;
4691   GdkRectangle background_area;
4692   GdkRectangle cell_area;
4693   GdkRectangle clip;
4694   guint flags;
4695   gint highlight_x;
4696   gint expander_cell_width;
4697   gint bin_window_width;
4698   gint bin_window_height;
4699   GtkTreePath *drag_dest_path;
4700   GList *first_column, *last_column;
4701   gint vertical_separator;
4702   gint horizontal_separator;
4703   gint focus_line_width;
4704   gboolean allow_rules;
4705   gboolean has_can_focus_cell;
4706   gboolean rtl;
4707   gint n_visible_columns;
4708   gint grid_line_width;
4709   gboolean draw_vgrid_lines, draw_hgrid_lines;
4710   GtkStyleContext *context;
4711   GtkStateFlags state;
4712   gboolean parity;
4713
4714   rtl = (gtk_widget_get_direction (widget) == GTK_TEXT_DIR_RTL);
4715   context = gtk_widget_get_style_context (widget);
4716   state = gtk_widget_get_state_flags (widget);
4717
4718   gtk_widget_style_get (widget,
4719                         "horizontal-separator", &horizontal_separator,
4720                         "vertical-separator", &vertical_separator,
4721                         "allow-rules", &allow_rules,
4722                         "focus-line-width", &focus_line_width,
4723                         NULL);
4724
4725   if (tree_view->priv->tree == NULL)
4726     {
4727       draw_empty_focus (tree_view, cr);
4728       return TRUE;
4729     }
4730
4731   bin_window_width = gdk_window_get_width (tree_view->priv->bin_window);
4732   bin_window_height = gdk_window_get_height (tree_view->priv->bin_window);
4733   cairo_rectangle (cr, 0, 0, bin_window_width, bin_window_height);
4734   cairo_clip (cr);
4735   if (!gdk_cairo_get_clip_rectangle (cr, &clip))
4736     return TRUE;
4737
4738   new_y = TREE_WINDOW_Y_TO_RBTREE_Y (tree_view, clip.y);
4739
4740   if (new_y < 0)
4741     new_y = 0;
4742   y_offset = -_gtk_rbtree_find_offset (tree_view->priv->tree, new_y, &tree, &node);
4743
4744   if (tree_view->priv->height < bin_window_height)
4745     {
4746       gtk_style_context_save (context);
4747       gtk_style_context_set_state (context, state);
4748       gtk_style_context_add_class (context, GTK_STYLE_CLASS_CELL);
4749
4750       gtk_render_background (context, cr,
4751                              0, tree_view->priv->height,
4752                              bin_window_width,
4753                              bin_window_height - tree_view->priv->height);
4754
4755       gtk_style_context_restore (context);
4756     }
4757
4758   if (node == NULL)
4759     return TRUE;
4760
4761   /* find the path for the node */
4762   path = _gtk_tree_path_new_from_rbtree (tree, node);
4763   gtk_tree_model_get_iter (tree_view->priv->model,
4764                            &iter,
4765                            path);
4766   depth = gtk_tree_path_get_depth (path);
4767   gtk_tree_path_free (path);
4768
4769   drag_dest_path = NULL;
4770
4771   if (tree_view->priv->drag_dest_row)
4772     drag_dest_path = gtk_tree_row_reference_get_path (tree_view->priv->drag_dest_row);
4773
4774   if (drag_dest_path)
4775     _gtk_tree_view_find_node (tree_view, drag_dest_path,
4776                               &drag_highlight_tree, &drag_highlight);
4777
4778   draw_vgrid_lines =
4779     tree_view->priv->grid_lines == GTK_TREE_VIEW_GRID_LINES_VERTICAL
4780     || tree_view->priv->grid_lines == GTK_TREE_VIEW_GRID_LINES_BOTH;
4781   draw_hgrid_lines =
4782     tree_view->priv->grid_lines == GTK_TREE_VIEW_GRID_LINES_HORIZONTAL
4783     || tree_view->priv->grid_lines == GTK_TREE_VIEW_GRID_LINES_BOTH;
4784
4785   if (draw_vgrid_lines || draw_hgrid_lines)
4786     gtk_widget_style_get (widget, "grid-line-width", &grid_line_width, NULL);
4787
4788   n_visible_columns = 0;
4789   for (list = tree_view->priv->columns; list; list = list->next)
4790     {
4791       if (!gtk_tree_view_column_get_visible (GTK_TREE_VIEW_COLUMN (list->data)))
4792         continue;
4793       n_visible_columns ++;
4794     }
4795
4796   /* Find the last column */
4797   for (last_column = g_list_last (tree_view->priv->columns);
4798        last_column &&
4799        !(gtk_tree_view_column_get_visible (GTK_TREE_VIEW_COLUMN (last_column->data)));
4800        last_column = last_column->prev)
4801     ;
4802
4803   /* and the first */
4804   for (first_column = g_list_first (tree_view->priv->columns);
4805        first_column &&
4806        !(gtk_tree_view_column_get_visible (GTK_TREE_VIEW_COLUMN (first_column->data)));
4807        first_column = first_column->next)
4808     ;
4809
4810   /* Actually process the expose event.  To do this, we want to
4811    * start at the first node of the event, and walk the tree in
4812    * order, drawing each successive node.
4813    */
4814
4815   parity = !(_gtk_rbtree_node_get_index (tree, node) % 2);
4816
4817   do
4818     {
4819       gboolean is_separator = FALSE;
4820       gboolean is_first = FALSE;
4821       gboolean is_last = FALSE;
4822       gint n_col = 0;
4823
4824       parity = !parity;
4825       is_separator = row_is_separator (tree_view, &iter, NULL);
4826
4827       max_height = gtk_tree_view_get_row_height (tree_view, node);
4828
4829       cell_offset = 0;
4830       highlight_x = 0; /* should match x coord of first cell */
4831       expander_cell_width = 0;
4832
4833       background_area.y = y_offset + clip.y;
4834       background_area.height = max_height;
4835
4836       flags = 0;
4837
4838       if (GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_PRELIT))
4839         flags |= GTK_CELL_RENDERER_PRELIT;
4840
4841       if (GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_SELECTED))
4842         flags |= GTK_CELL_RENDERER_SELECTED;
4843
4844       /* we *need* to set cell data on all cells before the call
4845        * to _has_can_focus_cell, else _has_can_focus_cell() does not
4846        * return a correct value.
4847        */
4848       for (list = (rtl ? g_list_last (tree_view->priv->columns) : g_list_first (tree_view->priv->columns));
4849            list;
4850            list = (rtl ? list->prev : list->next))
4851         {
4852           GtkTreeViewColumn *column = list->data;
4853           gtk_tree_view_column_cell_set_cell_data (column,
4854                                                    tree_view->priv->model,
4855                                                    &iter,
4856                                                    GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_PARENT),
4857                                                    node->children?TRUE:FALSE);
4858         }
4859
4860       has_can_focus_cell = gtk_tree_view_has_can_focus_cell (tree_view);
4861
4862       for (list = (rtl ? g_list_last (tree_view->priv->columns) : g_list_first (tree_view->priv->columns));
4863            list;
4864            list = (rtl ? list->prev : list->next))
4865         {
4866           GtkTreeViewColumn *column = list->data;
4867           GtkRegionFlags row_flags = 0, column_flags = 0;
4868           GtkStateFlags state = 0;
4869           gint width;
4870           gboolean draw_focus;
4871
4872           if (!gtk_tree_view_column_get_visible (column))
4873             continue;
4874
4875           n_col++;
4876           width = gtk_tree_view_column_get_width (column);
4877
4878           if (cell_offset > clip.x + clip.width ||
4879               cell_offset + width < clip.x)
4880             {
4881               cell_offset += width;
4882               continue;
4883             }
4884
4885           if (gtk_tree_view_column_get_sort_indicator (column))
4886             flags |= GTK_CELL_RENDERER_SORTED;
4887           else
4888             flags &= ~GTK_CELL_RENDERER_SORTED;
4889
4890           if (tree_view->priv->cursor_node == node)
4891             flags |= GTK_CELL_RENDERER_FOCUSED;
4892           else
4893             flags &= ~GTK_CELL_RENDERER_FOCUSED;
4894
4895           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             tree_view->priv->focus_column = 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           tree_view->priv->focus_column = 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   if (tree_view->priv->fixed_height_mode
8736       && tree_view->priv->fixed_height >= 0)
8737     {
8738       _gtk_rbtree_node_set_height (tree, node, tree_view->priv->fixed_height);
8739       if (gtk_widget_get_realized (GTK_WIDGET (tree_view)))
8740         gtk_tree_view_node_queue_redraw (tree_view, tree, node);
8741     }
8742   else
8743     {
8744       _gtk_rbtree_node_mark_invalid (tree, node);
8745       for (list = tree_view->priv->columns; list; list = list->next)
8746         {
8747           GtkTreeViewColumn *column;
8748
8749           column = list->data;
8750           if (!gtk_tree_view_column_get_visible (column))
8751             continue;
8752
8753           if (gtk_tree_view_column_get_sizing (column) == GTK_TREE_VIEW_COLUMN_AUTOSIZE)
8754             {
8755               _gtk_tree_view_column_cell_set_dirty (column, TRUE);
8756             }
8757         }
8758     }
8759
8760  done:
8761   if (!tree_view->priv->fixed_height_mode &&
8762       gtk_widget_get_realized (GTK_WIDGET (tree_view)))
8763     install_presize_handler (tree_view);
8764   if (free_path)
8765     gtk_tree_path_free (path);
8766 }
8767
8768 static void
8769 gtk_tree_view_row_inserted (GtkTreeModel *model,
8770                             GtkTreePath  *path,
8771                             GtkTreeIter  *iter,
8772                             gpointer      data)
8773 {
8774   GtkTreeView *tree_view = (GtkTreeView *) data;
8775   gint *indices;
8776   GtkRBTree *tree;
8777   GtkRBNode *tmpnode = NULL;
8778   gint depth;
8779   gint i = 0;
8780   gint height;
8781   gboolean free_path = FALSE;
8782   gboolean node_visible = TRUE;
8783
8784   g_return_if_fail (path != NULL || iter != NULL);
8785
8786   if (tree_view->priv->fixed_height_mode
8787       && tree_view->priv->fixed_height >= 0)
8788     height = tree_view->priv->fixed_height;
8789   else
8790     height = 0;
8791
8792   if (path == NULL)
8793     {
8794       path = gtk_tree_model_get_path (model, iter);
8795       free_path = TRUE;
8796     }
8797   else if (iter == NULL)
8798     gtk_tree_model_get_iter (model, iter, path);
8799
8800   if (tree_view->priv->tree == NULL)
8801     tree_view->priv->tree = _gtk_rbtree_new ();
8802
8803   tree = tree_view->priv->tree;
8804
8805   /* Update all row-references */
8806   gtk_tree_row_reference_inserted (G_OBJECT (data), path);
8807   depth = gtk_tree_path_get_depth (path);
8808   indices = gtk_tree_path_get_indices (path);
8809
8810   /* First, find the parent tree */
8811   while (i < depth - 1)
8812     {
8813       if (tree == NULL)
8814         {
8815           /* We aren't showing the node */
8816           node_visible = FALSE;
8817           goto done;
8818         }
8819
8820       tmpnode = _gtk_rbtree_find_count (tree, indices[i] + 1);
8821       if (tmpnode == NULL)
8822         {
8823           g_warning ("A node was inserted with a parent that's not in the tree.\n" \
8824                      "This possibly means that a GtkTreeModel inserted a child node\n" \
8825                      "before the parent was inserted.");
8826           goto done;
8827         }
8828       else if (!GTK_RBNODE_FLAG_SET (tmpnode, GTK_RBNODE_IS_PARENT))
8829         {
8830           /* FIXME enforce correct behavior on model, probably */
8831           /* In theory, the model should have emitted has_child_toggled here.  We
8832            * try to catch it anyway, just to be safe, in case the model hasn't.
8833            */
8834           GtkTreePath *tmppath = _gtk_tree_path_new_from_rbtree (tree, tmpnode);
8835           gtk_tree_view_row_has_child_toggled (model, tmppath, NULL, data);
8836           gtk_tree_path_free (tmppath);
8837           goto done;
8838         }
8839
8840       tree = tmpnode->children;
8841       i++;
8842     }
8843
8844   if (tree == NULL)
8845     {
8846       node_visible = FALSE;
8847       goto done;
8848     }
8849
8850   /* ref the node */
8851   gtk_tree_model_ref_node (tree_view->priv->model, iter);
8852   if (indices[depth - 1] == 0)
8853     {
8854       tmpnode = _gtk_rbtree_find_count (tree, 1);
8855       tmpnode = _gtk_rbtree_insert_before (tree, tmpnode, height, FALSE);
8856     }
8857   else
8858     {
8859       tmpnode = _gtk_rbtree_find_count (tree, indices[depth - 1]);
8860       tmpnode = _gtk_rbtree_insert_after (tree, tmpnode, height, FALSE);
8861     }
8862
8863  done:
8864   if (height > 0)
8865     {
8866       if (tree)
8867         _gtk_rbtree_node_mark_valid (tree, tmpnode);
8868
8869       if (node_visible && node_is_visible (tree_view, tree, tmpnode))
8870         gtk_widget_queue_resize (GTK_WIDGET (tree_view));
8871       else
8872         gtk_widget_queue_resize_no_redraw (GTK_WIDGET (tree_view));
8873     }
8874   else
8875     install_presize_handler (tree_view);
8876   if (free_path)
8877     gtk_tree_path_free (path);
8878 }
8879
8880 static void
8881 gtk_tree_view_row_has_child_toggled (GtkTreeModel *model,
8882                                      GtkTreePath  *path,
8883                                      GtkTreeIter  *iter,
8884                                      gpointer      data)
8885 {
8886   GtkTreeView *tree_view = (GtkTreeView *)data;
8887   GtkTreeIter real_iter;
8888   gboolean has_child;
8889   GtkRBTree *tree;
8890   GtkRBNode *node;
8891   gboolean free_path = FALSE;
8892
8893   g_return_if_fail (path != NULL || iter != NULL);
8894
8895   if (iter)
8896     real_iter = *iter;
8897
8898   if (path == NULL)
8899     {
8900       path = gtk_tree_model_get_path (model, iter);
8901       free_path = TRUE;
8902     }
8903   else if (iter == NULL)
8904     gtk_tree_model_get_iter (model, &real_iter, path);
8905
8906   if (_gtk_tree_view_find_node (tree_view,
8907                                 path,
8908                                 &tree,
8909                                 &node))
8910     /* We aren't actually showing the node */
8911     goto done;
8912
8913   if (tree == NULL)
8914     goto done;
8915
8916   has_child = gtk_tree_model_iter_has_child (model, &real_iter);
8917   /* Sanity check.
8918    */
8919   if (GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_PARENT) == has_child)
8920     goto done;
8921
8922   if (has_child)
8923     GTK_RBNODE_SET_FLAG (node, GTK_RBNODE_IS_PARENT);
8924   else
8925     GTK_RBNODE_UNSET_FLAG (node, GTK_RBNODE_IS_PARENT);
8926
8927   if (has_child && tree_view->priv->is_list)
8928     {
8929       tree_view->priv->is_list = FALSE;
8930       if (tree_view->priv->show_expanders)
8931         {
8932           GList *list;
8933
8934           for (list = tree_view->priv->columns; list; list = list->next)
8935             if (gtk_tree_view_column_get_visible (GTK_TREE_VIEW_COLUMN (list->data)))
8936               {
8937                 _gtk_tree_view_column_cell_set_dirty (GTK_TREE_VIEW_COLUMN (list->data), TRUE);
8938                 break;
8939               }
8940         }
8941       gtk_widget_queue_resize (GTK_WIDGET (tree_view));
8942     }
8943   else
8944     {
8945       _gtk_tree_view_queue_draw_node (tree_view, tree, node, NULL);
8946     }
8947
8948  done:
8949   if (free_path)
8950     gtk_tree_path_free (path);
8951 }
8952
8953 static void
8954 count_children_helper (GtkRBTree *tree,
8955                        GtkRBNode *node,
8956                        gpointer   data)
8957 {
8958   if (node->children)
8959     _gtk_rbtree_traverse (node->children, node->children->root, G_POST_ORDER, count_children_helper, data);
8960   (*((gint *)data))++;
8961 }
8962
8963 static void
8964 check_selection_helper (GtkRBTree *tree,
8965                         GtkRBNode *node,
8966                         gpointer   data)
8967 {
8968   gint *value = (gint *)data;
8969
8970   *value = GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_SELECTED);
8971
8972   if (node->children && !*value)
8973     _gtk_rbtree_traverse (node->children, node->children->root, G_POST_ORDER, check_selection_helper, data);
8974 }
8975
8976 static void
8977 gtk_tree_view_row_deleted (GtkTreeModel *model,
8978                            GtkTreePath  *path,
8979                            gpointer      data)
8980 {
8981   GtkTreeView *tree_view = (GtkTreeView *)data;
8982   GtkRBTree *tree;
8983   GtkRBNode *node;
8984   GList *list;
8985   gboolean selection_changed = FALSE, cursor_changed = FALSE;
8986   GtkRBTree *cursor_tree = NULL;
8987   GtkRBNode *cursor_node = NULL;
8988   GtkStyleContext *context;
8989
8990   g_return_if_fail (path != NULL);
8991
8992   gtk_tree_row_reference_deleted (G_OBJECT (data), path);
8993
8994   if (_gtk_tree_view_find_node (tree_view, path, &tree, &node))
8995     return;
8996
8997   if (tree == NULL)
8998     return;
8999
9000   /* check if the selection has been changed */
9001   _gtk_rbtree_traverse (tree, node, G_POST_ORDER,
9002                         check_selection_helper, &selection_changed);
9003
9004   for (list = tree_view->priv->columns; list; list = list->next)
9005     if (gtk_tree_view_column_get_visible (GTK_TREE_VIEW_COLUMN (list->data)) &&
9006         gtk_tree_view_column_get_sizing (GTK_TREE_VIEW_COLUMN (list->data)) == GTK_TREE_VIEW_COLUMN_AUTOSIZE)
9007       _gtk_tree_view_column_cell_set_dirty ((GtkTreeViewColumn *)list->data, TRUE);
9008
9009   /* Ensure we don't have a dangling pointer to a dead node */
9010   ensure_unprelighted (tree_view);
9011
9012   /* Cancel editting if we've started */
9013   gtk_tree_view_stop_editing (tree_view, TRUE);
9014
9015   /* If the cursor row got deleted, move the cursor to the next row */
9016   if (tree_view->priv->cursor_node &&
9017       (tree_view->priv->cursor_node == node ||
9018        (node->children &&  _gtk_rbtree_contains (node->children, tree_view->priv->cursor_tree))))
9019     {
9020       GtkTreePath *cursor_path;
9021
9022       cursor_tree = tree;
9023       cursor_node = _gtk_rbtree_next (tree, node);
9024       /* find the first node that is not going to be deleted */
9025       while (cursor_node == NULL && cursor_tree->parent_tree)
9026         {
9027           cursor_node = _gtk_rbtree_next (cursor_tree->parent_tree,
9028                                           cursor_tree->parent_node);
9029           cursor_tree = cursor_tree->parent_tree;
9030         }
9031
9032       if (cursor_node != NULL)
9033         cursor_path = _gtk_tree_path_new_from_rbtree (cursor_tree, cursor_node);
9034       else
9035         cursor_path = NULL;
9036
9037       if (cursor_path == NULL ||
9038           ! search_first_focusable_path (tree_view, &cursor_path, TRUE,
9039                                          &cursor_tree, &cursor_node))
9040         {
9041           /* It looks like we reached the end of the view without finding
9042            * a focusable row.  We will step backwards to find the last
9043            * focusable row.
9044            */
9045           _gtk_rbtree_prev_full (tree, node, &cursor_tree, &cursor_node);
9046           if (cursor_node)
9047             {
9048               cursor_path = _gtk_tree_path_new_from_rbtree (cursor_tree, cursor_node);
9049               if (! search_first_focusable_path (tree_view, &cursor_path, FALSE,
9050                                                  &cursor_tree, &cursor_node))
9051                 cursor_node = NULL;
9052               gtk_tree_path_free (cursor_path);
9053             }
9054         }
9055       else if (cursor_path)
9056         gtk_tree_path_free (cursor_path);
9057
9058       cursor_changed = TRUE;
9059     }
9060
9061   if (tree_view->priv->destroy_count_func)
9062     {
9063       gint child_count = 0;
9064       if (node->children)
9065         _gtk_rbtree_traverse (node->children, node->children->root, G_POST_ORDER, count_children_helper, &child_count);
9066       tree_view->priv->destroy_count_func (tree_view, path, child_count, tree_view->priv->destroy_count_data);
9067     }
9068
9069   if (tree->root->count == 1)
9070     {
9071       if (tree_view->priv->tree == tree)
9072         tree_view->priv->tree = NULL;
9073
9074       _gtk_tree_view_accessible_remove (tree_view, tree, NULL);
9075       _gtk_rbtree_remove (tree);
9076     }
9077   else
9078     {
9079       _gtk_tree_view_accessible_remove (tree_view, tree, node);
9080       _gtk_rbtree_remove_node (tree, node);
9081     }
9082
9083   if (! gtk_tree_row_reference_valid (tree_view->priv->top_row))
9084     {
9085       gtk_tree_row_reference_free (tree_view->priv->top_row);
9086       tree_view->priv->top_row = NULL;
9087     }
9088
9089   /* Cancel any ongoing animation happening within the row */
9090   context = gtk_widget_get_style_context (GTK_WIDGET (tree_view));
9091   gtk_style_context_cancel_animations (context, node);
9092
9093   install_scroll_sync_handler (tree_view);
9094
9095   gtk_widget_queue_resize (GTK_WIDGET (tree_view));
9096
9097   if (cursor_changed)
9098     {
9099       if (cursor_node)
9100         {
9101           GtkTreePath *cursor_path = _gtk_tree_path_new_from_rbtree (cursor_tree, cursor_node);
9102           gtk_tree_view_real_set_cursor (tree_view, cursor_path, CLEAR_AND_SELECT | CURSOR_INVALID);
9103           gtk_tree_path_free (cursor_path);
9104         }
9105       else
9106         gtk_tree_view_real_set_cursor (tree_view, NULL, CLEAR_AND_SELECT | CURSOR_INVALID);
9107     }
9108   else if (selection_changed)
9109     g_signal_emit_by_name (tree_view->priv->selection, "changed");
9110 }
9111
9112 static void
9113 gtk_tree_view_rows_reordered (GtkTreeModel *model,
9114                               GtkTreePath  *parent,
9115                               GtkTreeIter  *iter,
9116                               gint         *new_order,
9117                               gpointer      data)
9118 {
9119   GtkTreeView *tree_view = GTK_TREE_VIEW (data);
9120   GtkRBTree *tree;
9121   GtkRBNode *node;
9122   gint len;
9123
9124   len = gtk_tree_model_iter_n_children (model, iter);
9125
9126   if (len < 2)
9127     return;
9128
9129   gtk_tree_row_reference_reordered (G_OBJECT (data),
9130                                     parent,
9131                                     iter,
9132                                     new_order);
9133
9134   if (_gtk_tree_view_find_node (tree_view,
9135                                 parent,
9136                                 &tree,
9137                                 &node))
9138     return;
9139
9140   /* We need to special case the parent path */
9141   if (tree == NULL)
9142     tree = tree_view->priv->tree;
9143   else
9144     tree = node->children;
9145
9146   if (tree == NULL)
9147     return;
9148
9149   if (tree_view->priv->edited_column)
9150     gtk_tree_view_stop_editing (tree_view, TRUE);
9151
9152   /* we need to be unprelighted */
9153   ensure_unprelighted (tree_view);
9154
9155   _gtk_rbtree_reorder (tree, new_order, len);
9156
9157   _gtk_tree_view_accessible_reorder (tree_view);
9158
9159   gtk_widget_queue_draw (GTK_WIDGET (tree_view));
9160
9161   gtk_tree_view_dy_to_top_row (tree_view);
9162 }
9163
9164
9165 /* Internal tree functions
9166  */
9167
9168
9169 static void
9170 gtk_tree_view_get_background_xrange (GtkTreeView       *tree_view,
9171                                      GtkRBTree         *tree,
9172                                      GtkTreeViewColumn *column,
9173                                      gint              *x1,
9174                                      gint              *x2)
9175 {
9176   GtkTreeViewColumn *tmp_column = NULL;
9177   gint total_width;
9178   GList *list;
9179   gboolean rtl;
9180
9181   if (x1)
9182     *x1 = 0;
9183
9184   if (x2)
9185     *x2 = 0;
9186
9187   rtl = (gtk_widget_get_direction (GTK_WIDGET (tree_view)) == GTK_TEXT_DIR_RTL);
9188
9189   total_width = 0;
9190   for (list = (rtl ? g_list_last (tree_view->priv->columns) : g_list_first (tree_view->priv->columns));
9191        list;
9192        list = (rtl ? list->prev : list->next))
9193     {
9194       tmp_column = list->data;
9195
9196       if (tmp_column == column)
9197         break;
9198
9199       if (gtk_tree_view_column_get_visible (tmp_column))
9200         total_width += gtk_tree_view_column_get_width (tmp_column);
9201     }
9202
9203   if (tmp_column != column)
9204     {
9205       g_warning (G_STRLOC": passed-in column isn't in the tree");
9206       return;
9207     }
9208
9209   if (x1)
9210     *x1 = total_width;
9211
9212   if (x2)
9213     {
9214       if (gtk_tree_view_column_get_visible (column))
9215         *x2 = total_width + gtk_tree_view_column_get_width (column);
9216       else
9217         *x2 = total_width; /* width of 0 */
9218     }
9219 }
9220
9221 static void
9222 gtk_tree_view_get_arrow_xrange (GtkTreeView *tree_view,
9223                                 GtkRBTree   *tree,
9224                                 gint        *x1,
9225                                 gint        *x2)
9226 {
9227   gint x_offset = 0;
9228   GList *list;
9229   GtkTreeViewColumn *tmp_column = NULL;
9230   gint total_width;
9231   gboolean indent_expanders;
9232   gboolean rtl;
9233
9234   rtl = (gtk_widget_get_direction (GTK_WIDGET (tree_view)) == GTK_TEXT_DIR_RTL);
9235
9236   total_width = 0;
9237   for (list = (rtl ? g_list_last (tree_view->priv->columns) : g_list_first (tree_view->priv->columns));
9238        list;
9239        list = (rtl ? list->prev : list->next))
9240     {
9241       tmp_column = list->data;
9242
9243       if (gtk_tree_view_is_expander_column (tree_view, tmp_column))
9244         {
9245           if (rtl)
9246             x_offset = total_width + gtk_tree_view_column_get_width (tmp_column) - tree_view->priv->expander_size;
9247           else
9248             x_offset = total_width;
9249           break;
9250         }
9251
9252       if (gtk_tree_view_column_get_visible (tmp_column))
9253         total_width += gtk_tree_view_column_get_width (tmp_column);
9254     }
9255
9256   gtk_widget_style_get (GTK_WIDGET (tree_view),
9257                         "indent-expanders", &indent_expanders,
9258                         NULL);
9259
9260   if (indent_expanders)
9261     {
9262       if (rtl)
9263         x_offset -= tree_view->priv->expander_size * _gtk_rbtree_get_depth (tree);
9264       else
9265         x_offset += tree_view->priv->expander_size * _gtk_rbtree_get_depth (tree);
9266     }
9267
9268   *x1 = x_offset;
9269
9270   if (tmp_column &&
9271       gtk_tree_view_column_get_visible (tmp_column))
9272     /* +1 because x2 isn't included in the range. */
9273     *x2 = *x1 + tree_view->priv->expander_size + 1;
9274   else
9275     *x2 = *x1;
9276 }
9277
9278 static void
9279 gtk_tree_view_build_tree (GtkTreeView *tree_view,
9280                           GtkRBTree   *tree,
9281                           GtkTreeIter *iter,
9282                           gint         depth,
9283                           gboolean     recurse)
9284 {
9285   GtkRBNode *temp = NULL;
9286   GtkTreePath *path = NULL;
9287
9288   do
9289     {
9290       gtk_tree_model_ref_node (tree_view->priv->model, iter);
9291       temp = _gtk_rbtree_insert_after (tree, temp, 0, FALSE);
9292
9293       if (tree_view->priv->fixed_height > 0)
9294         {
9295           if (GTK_RBNODE_FLAG_SET (temp, GTK_RBNODE_INVALID))
9296             {
9297               _gtk_rbtree_node_set_height (tree, temp, tree_view->priv->fixed_height);
9298               _gtk_rbtree_node_mark_valid (tree, temp);
9299             }
9300         }
9301
9302       if (tree_view->priv->is_list)
9303         continue;
9304
9305       if (recurse)
9306         {
9307           GtkTreeIter child;
9308
9309           if (!path)
9310             path = gtk_tree_model_get_path (tree_view->priv->model, iter);
9311           else
9312             gtk_tree_path_next (path);
9313
9314           if (gtk_tree_model_iter_children (tree_view->priv->model, &child, iter))
9315             {
9316               gboolean expand;
9317
9318               g_signal_emit (tree_view, tree_view_signals[TEST_EXPAND_ROW], 0, iter, path, &expand);
9319
9320               if (gtk_tree_model_iter_has_child (tree_view->priv->model, iter)
9321                   && !expand)
9322                 {
9323                   temp->children = _gtk_rbtree_new ();
9324                   temp->children->parent_tree = tree;
9325                   temp->children->parent_node = temp;
9326                   gtk_tree_view_build_tree (tree_view, temp->children, &child, depth + 1, recurse);
9327                 }
9328             }
9329         }
9330
9331       if (gtk_tree_model_iter_has_child (tree_view->priv->model, iter))
9332         {
9333           if ((temp->flags&GTK_RBNODE_IS_PARENT) != GTK_RBNODE_IS_PARENT)
9334             temp->flags ^= GTK_RBNODE_IS_PARENT;
9335         }
9336     }
9337   while (gtk_tree_model_iter_next (tree_view->priv->model, iter));
9338
9339   if (path)
9340     gtk_tree_path_free (path);
9341 }
9342
9343 /* Make sure the node is visible vertically */
9344 static void
9345 gtk_tree_view_clamp_node_visible (GtkTreeView *tree_view,
9346                                   GtkRBTree   *tree,
9347                                   GtkRBNode   *node)
9348 {
9349   gint node_dy, height;
9350   GtkTreePath *path = NULL;
9351
9352   if (!gtk_widget_get_realized (GTK_WIDGET (tree_view)))
9353     return;
9354
9355   /* just return if the node is visible, avoiding a costly expose */
9356   node_dy = _gtk_rbtree_node_find_offset (tree, node);
9357   height = gtk_tree_view_get_row_height (tree_view, node);
9358   if (! GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_INVALID)
9359       && node_dy >= gtk_adjustment_get_value (tree_view->priv->vadjustment)
9360       && node_dy + height <= (gtk_adjustment_get_value (tree_view->priv->vadjustment)
9361                               + gtk_adjustment_get_page_size (tree_view->priv->vadjustment)))
9362     return;
9363
9364   path = _gtk_tree_path_new_from_rbtree (tree, node);
9365   if (path)
9366     {
9367       /* We process updates because we want to clear old selected items when we scroll.
9368        * if this is removed, we get a "selection streak" at the bottom. */
9369       gtk_tree_view_bin_process_updates (tree_view);
9370
9371       gtk_tree_view_scroll_to_cell (tree_view, path, NULL, FALSE, 0.0, 0.0);
9372       gtk_tree_path_free (path);
9373     }
9374 }
9375
9376 static void
9377 gtk_tree_view_clamp_column_visible (GtkTreeView       *tree_view,
9378                                     GtkTreeViewColumn *column,
9379                                     gboolean           focus_to_cell)
9380 {
9381   GtkAllocation allocation;
9382   gint x, width;
9383
9384   if (column == NULL)
9385     return;
9386
9387   gtk_widget_get_allocation (gtk_tree_view_column_get_button (column), &allocation);
9388   x = allocation.x;
9389   width = allocation.width;
9390
9391   if (width > gtk_adjustment_get_page_size (tree_view->priv->hadjustment))
9392     {
9393       /* The column is larger than the horizontal page size.  If the
9394        * column has cells which can be focussed individually, then we make
9395        * sure the cell which gets focus is fully visible (if even the
9396        * focus cell is bigger than the page size, we make sure the
9397        * left-hand side of the cell is visible).
9398        *
9399        * If the column does not have an activatable cell, we
9400        * make sure the left-hand side of the column is visible.
9401        */
9402
9403       if (focus_to_cell && gtk_tree_view_has_can_focus_cell (tree_view))
9404         {
9405           GtkCellArea *cell_area;
9406           GtkCellRenderer *focus_cell;
9407
9408           cell_area = gtk_cell_layout_get_area (GTK_CELL_LAYOUT (column));
9409           focus_cell = gtk_cell_area_get_focus_cell (cell_area);
9410
9411           if (gtk_tree_view_column_cell_get_position (column, focus_cell,
9412                                                       &x, &width))
9413             {
9414               if (width < gtk_adjustment_get_page_size (tree_view->priv->hadjustment))
9415                 {
9416                   if (gtk_adjustment_get_value (tree_view->priv->hadjustment) + gtk_adjustment_get_page_size (tree_view->priv->hadjustment) < x + width)
9417                     gtk_adjustment_set_value (tree_view->priv->hadjustment,
9418                                               x + width - gtk_adjustment_get_page_size (tree_view->priv->hadjustment));
9419                   else if (gtk_adjustment_get_value (tree_view->priv->hadjustment) > x)
9420                     gtk_adjustment_set_value (tree_view->priv->hadjustment, x);
9421                 }
9422             }
9423         }
9424
9425       gtk_adjustment_set_value (tree_view->priv->hadjustment, x);
9426     }
9427   else
9428     {
9429       if ((gtk_adjustment_get_value (tree_view->priv->hadjustment) + gtk_adjustment_get_page_size (tree_view->priv->hadjustment)) < (x + width))
9430           gtk_adjustment_set_value (tree_view->priv->hadjustment,
9431                                     x + width - gtk_adjustment_get_page_size (tree_view->priv->hadjustment));
9432       else if (gtk_adjustment_get_value (tree_view->priv->hadjustment) > x)
9433         gtk_adjustment_set_value (tree_view->priv->hadjustment, x);
9434   }
9435 }
9436
9437 /* This function could be more efficient.  I'll optimize it if profiling seems
9438  * to imply that it is important */
9439 GtkTreePath *
9440 _gtk_tree_path_new_from_rbtree (GtkRBTree   *tree,
9441                                 GtkRBNode   *node)
9442 {
9443   GtkTreePath *path;
9444   GtkRBTree *tmp_tree;
9445   GtkRBNode *tmp_node, *last;
9446   gint count;
9447
9448   path = gtk_tree_path_new ();
9449
9450   g_return_val_if_fail (node != NULL, path);
9451
9452   count = 1 + node->left->count;
9453
9454   last = node;
9455   tmp_node = node->parent;
9456   tmp_tree = tree;
9457   while (tmp_tree)
9458     {
9459       while (!_gtk_rbtree_is_nil (tmp_node))
9460         {
9461           if (tmp_node->right == last)
9462             count += 1 + tmp_node->left->count;
9463           last = tmp_node;
9464           tmp_node = tmp_node->parent;
9465         }
9466       gtk_tree_path_prepend_index (path, count - 1);
9467       last = tmp_tree->parent_node;
9468       tmp_tree = tmp_tree->parent_tree;
9469       if (last)
9470         {
9471           count = 1 + last->left->count;
9472           tmp_node = last->parent;
9473         }
9474     }
9475   return path;
9476 }
9477
9478 /* Returns TRUE if we ran out of tree before finding the path.  If the path is
9479  * invalid (ie. points to a node that's not in the tree), *tree and *node are
9480  * both set to NULL.
9481  */
9482 gboolean
9483 _gtk_tree_view_find_node (GtkTreeView  *tree_view,
9484                           GtkTreePath  *path,
9485                           GtkRBTree   **tree,
9486                           GtkRBNode   **node)
9487 {
9488   GtkRBNode *tmpnode = NULL;
9489   GtkRBTree *tmptree = tree_view->priv->tree;
9490   gint *indices = gtk_tree_path_get_indices (path);
9491   gint depth = gtk_tree_path_get_depth (path);
9492   gint i = 0;
9493
9494   *node = NULL;
9495   *tree = NULL;
9496
9497   if (depth == 0 || tmptree == NULL)
9498     return FALSE;
9499   do
9500     {
9501       tmpnode = _gtk_rbtree_find_count (tmptree, indices[i] + 1);
9502       ++i;
9503       if (tmpnode == NULL)
9504         {
9505           *tree = NULL;
9506           *node = NULL;
9507           return FALSE;
9508         }
9509       if (i >= depth)
9510         {
9511           *tree = tmptree;
9512           *node = tmpnode;
9513           return FALSE;
9514         }
9515       *tree = tmptree;
9516       *node = tmpnode;
9517       tmptree = tmpnode->children;
9518       if (tmptree == NULL)
9519         return TRUE;
9520     }
9521   while (1);
9522 }
9523
9524 static gboolean
9525 gtk_tree_view_is_expander_column (GtkTreeView       *tree_view,
9526                                   GtkTreeViewColumn *column)
9527 {
9528   GList *list;
9529
9530   if (tree_view->priv->is_list)
9531     return FALSE;
9532
9533   if (tree_view->priv->expander_column != NULL)
9534     {
9535       if (tree_view->priv->expander_column == column)
9536         return TRUE;
9537       return FALSE;
9538     }
9539   else
9540     {
9541       for (list = tree_view->priv->columns;
9542            list;
9543            list = list->next)
9544         if (gtk_tree_view_column_get_visible (GTK_TREE_VIEW_COLUMN (list->data)))
9545           break;
9546       if (list && list->data == column)
9547         return TRUE;
9548     }
9549   return FALSE;
9550 }
9551
9552 static inline gboolean
9553 gtk_tree_view_draw_expanders (GtkTreeView *tree_view)
9554 {
9555   if (!tree_view->priv->is_list && tree_view->priv->show_expanders)
9556     return TRUE;
9557   /* else */
9558   return FALSE;
9559 }
9560
9561 static void
9562 gtk_tree_view_add_move_binding (GtkBindingSet  *binding_set,
9563                                 guint           keyval,
9564                                 guint           modmask,
9565                                 gboolean        add_shifted_binding,
9566                                 GtkMovementStep step,
9567                                 gint            count)
9568 {
9569
9570   gtk_binding_entry_add_signal (binding_set, keyval, modmask,
9571                                 "move-cursor", 2,
9572                                 G_TYPE_ENUM, step,
9573                                 G_TYPE_INT, count);
9574
9575   if (add_shifted_binding)
9576     gtk_binding_entry_add_signal (binding_set, keyval, GDK_SHIFT_MASK,
9577                                   "move-cursor", 2,
9578                                   G_TYPE_ENUM, step,
9579                                   G_TYPE_INT, count);
9580
9581   if ((modmask & GDK_CONTROL_MASK) == GDK_CONTROL_MASK)
9582    return;
9583
9584   gtk_binding_entry_add_signal (binding_set, keyval, GDK_CONTROL_MASK | GDK_SHIFT_MASK,
9585                                 "move-cursor", 2,
9586                                 G_TYPE_ENUM, step,
9587                                 G_TYPE_INT, count);
9588
9589   gtk_binding_entry_add_signal (binding_set, keyval, GDK_CONTROL_MASK,
9590                                 "move-cursor", 2,
9591                                 G_TYPE_ENUM, step,
9592                                 G_TYPE_INT, count);
9593 }
9594
9595 static gint
9596 gtk_tree_view_unref_tree_helper (GtkTreeModel *model,
9597                                  GtkTreeIter  *iter,
9598                                  GtkRBTree    *tree,
9599                                  GtkRBNode    *node)
9600 {
9601   gint retval = FALSE;
9602   do
9603     {
9604       g_return_val_if_fail (node != NULL, FALSE);
9605
9606       if (node->children)
9607         {
9608           GtkTreeIter child;
9609           GtkRBTree *new_tree;
9610           GtkRBNode *new_node;
9611
9612           new_tree = node->children;
9613           new_node = _gtk_rbtree_first (new_tree);
9614
9615           if (!gtk_tree_model_iter_children (model, &child, iter))
9616             return FALSE;
9617
9618           retval = retval || gtk_tree_view_unref_tree_helper (model, &child, new_tree, new_node);
9619         }
9620
9621       if (GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_SELECTED))
9622         retval = TRUE;
9623       gtk_tree_model_unref_node (model, iter);
9624       node = _gtk_rbtree_next (tree, node);
9625     }
9626   while (gtk_tree_model_iter_next (model, iter));
9627
9628   return retval;
9629 }
9630
9631 static gint
9632 gtk_tree_view_unref_and_check_selection_tree (GtkTreeView *tree_view,
9633                                               GtkRBTree   *tree)
9634 {
9635   GtkTreeIter iter;
9636   GtkTreePath *path;
9637   GtkRBNode *node;
9638   gint retval;
9639
9640   if (!tree)
9641     return FALSE;
9642
9643   node = _gtk_rbtree_first (tree);
9644
9645   g_return_val_if_fail (node != NULL, FALSE);
9646   path = _gtk_tree_path_new_from_rbtree (tree, node);
9647   gtk_tree_model_get_iter (GTK_TREE_MODEL (tree_view->priv->model),
9648                            &iter, path);
9649   retval = gtk_tree_view_unref_tree_helper (GTK_TREE_MODEL (tree_view->priv->model), &iter, tree, node);
9650   gtk_tree_path_free (path);
9651
9652   return retval;
9653 }
9654
9655 static void
9656 gtk_tree_view_set_column_drag_info (GtkTreeView       *tree_view,
9657                                     GtkTreeViewColumn *column)
9658 {
9659   GtkTreeViewColumn *left_column;
9660   GtkTreeViewColumn *cur_column = NULL;
9661   GtkTreeViewColumnReorder *reorder;
9662   gboolean rtl;
9663   GList *tmp_list;
9664   gint left;
9665
9666   /* We want to precalculate the motion list such that we know what column slots
9667    * are available.
9668    */
9669   left_column = NULL;
9670   rtl = (gtk_widget_get_direction (GTK_WIDGET (tree_view)) == GTK_TEXT_DIR_RTL);
9671
9672   /* First, identify all possible drop spots */
9673   if (rtl)
9674     tmp_list = g_list_last (tree_view->priv->columns);
9675   else
9676     tmp_list = g_list_first (tree_view->priv->columns);
9677
9678   while (tmp_list)
9679     {
9680       cur_column = GTK_TREE_VIEW_COLUMN (tmp_list->data);
9681       tmp_list = rtl?g_list_previous (tmp_list):g_list_next (tmp_list);
9682
9683       if (gtk_tree_view_column_get_visible (cur_column) == FALSE)
9684         continue;
9685
9686       /* If it's not the column moving and func tells us to skip over the column, we continue. */
9687       if (left_column != column && cur_column != column &&
9688           tree_view->priv->column_drop_func &&
9689           ! tree_view->priv->column_drop_func (tree_view, column, left_column, cur_column, tree_view->priv->column_drop_func_data))
9690         {
9691           left_column = cur_column;
9692           continue;
9693         }
9694       reorder = g_slice_new0 (GtkTreeViewColumnReorder);
9695       reorder->left_column = left_column;
9696       left_column = reorder->right_column = cur_column;
9697
9698       tree_view->priv->column_drag_info = g_list_append (tree_view->priv->column_drag_info, reorder);
9699     }
9700
9701   /* Add the last one */
9702   if (tree_view->priv->column_drop_func == NULL ||
9703       ((left_column != column) &&
9704        tree_view->priv->column_drop_func (tree_view, column, left_column, NULL, tree_view->priv->column_drop_func_data)))
9705     {
9706       reorder = g_slice_new0 (GtkTreeViewColumnReorder);
9707       reorder->left_column = left_column;
9708       reorder->right_column = NULL;
9709       tree_view->priv->column_drag_info = g_list_append (tree_view->priv->column_drag_info, reorder);
9710     }
9711
9712   /* We quickly check to see if it even makes sense to reorder columns. */
9713   /* If there is nothing that can be moved, then we return */
9714
9715   if (tree_view->priv->column_drag_info == NULL)
9716     return;
9717
9718   /* We know there are always 2 slots possbile, as you can always return column. */
9719   /* If that's all there is, return */
9720   if (tree_view->priv->column_drag_info->next == NULL ||
9721       (tree_view->priv->column_drag_info->next->next == NULL &&
9722        ((GtkTreeViewColumnReorder *)tree_view->priv->column_drag_info->data)->right_column == column &&
9723        ((GtkTreeViewColumnReorder *)tree_view->priv->column_drag_info->next->data)->left_column == column))
9724     {
9725       for (tmp_list = tree_view->priv->column_drag_info; tmp_list; tmp_list = tmp_list->next)
9726         g_slice_free (GtkTreeViewColumnReorder, tmp_list->data);
9727       g_list_free (tree_view->priv->column_drag_info);
9728       tree_view->priv->column_drag_info = NULL;
9729       return;
9730     }
9731   /* We fill in the ranges for the columns, now that we've isolated them */
9732   left = - TREE_VIEW_COLUMN_DRAG_DEAD_MULTIPLIER (tree_view);
9733
9734   for (tmp_list = tree_view->priv->column_drag_info; tmp_list; tmp_list = tmp_list->next)
9735     {
9736       reorder = (GtkTreeViewColumnReorder *) tmp_list->data;
9737
9738       reorder->left_align = left;
9739       if (tmp_list->next != NULL)
9740         {
9741           GtkAllocation right_allocation, left_allocation;
9742           GtkWidget    *left_button, *right_button;
9743
9744           g_assert (tmp_list->next->data);
9745
9746           right_button = gtk_tree_view_column_get_button (reorder->right_column);
9747           left_button  = gtk_tree_view_column_get_button
9748             (((GtkTreeViewColumnReorder *)tmp_list->next->data)->left_column);
9749
9750           gtk_widget_get_allocation (right_button, &right_allocation);
9751           gtk_widget_get_allocation (left_button, &left_allocation);
9752           left = reorder->right_align = (right_allocation.x + right_allocation.width + left_allocation.x) / 2;
9753         }
9754       else
9755         {
9756           reorder->right_align = gdk_window_get_width (tree_view->priv->header_window)
9757                                  + TREE_VIEW_COLUMN_DRAG_DEAD_MULTIPLIER (tree_view);
9758         }
9759     }
9760 }
9761
9762 void
9763 _gtk_tree_view_column_start_drag (GtkTreeView       *tree_view,
9764                                   GtkTreeViewColumn *column,
9765                                   GdkDevice         *device)
9766 {
9767   GdkEvent *send_event;
9768   GtkAllocation allocation;
9769   GtkAllocation button_allocation;
9770   GdkScreen *screen = gtk_widget_get_screen (GTK_WIDGET (tree_view));
9771   GtkWidget *button;
9772   GdkDevice *pointer, *keyboard;
9773
9774   g_return_if_fail (tree_view->priv->column_drag_info == NULL);
9775   g_return_if_fail (tree_view->priv->cur_reorder == NULL);
9776
9777   gtk_tree_view_set_column_drag_info (tree_view, column);
9778
9779   if (tree_view->priv->column_drag_info == NULL)
9780     return;
9781
9782   button = gtk_tree_view_column_get_button (column);
9783
9784   if (tree_view->priv->drag_window == NULL)
9785     {
9786       GdkWindowAttr attributes;
9787       guint attributes_mask;
9788
9789       gtk_widget_get_allocation (button, &button_allocation);
9790
9791       attributes.window_type = GDK_WINDOW_CHILD;
9792       attributes.wclass = GDK_INPUT_OUTPUT;
9793       attributes.x = button_allocation.x;
9794       attributes.y = 0;
9795       attributes.width = button_allocation.width;
9796       attributes.height = button_allocation.height;
9797       attributes.visual = gtk_widget_get_visual (GTK_WIDGET (tree_view));
9798       attributes.event_mask = GDK_VISIBILITY_NOTIFY_MASK | GDK_EXPOSURE_MASK | GDK_POINTER_MOTION_MASK;
9799       attributes_mask = GDK_WA_X | GDK_WA_Y | GDK_WA_VISUAL;
9800
9801       tree_view->priv->drag_window = gdk_window_new (tree_view->priv->bin_window,
9802                                                      &attributes,
9803                                                      attributes_mask);
9804       gdk_window_set_user_data (tree_view->priv->drag_window, GTK_WIDGET (tree_view));
9805     }
9806
9807   if (gdk_device_get_source (device) == GDK_SOURCE_KEYBOARD)
9808     {
9809       keyboard = device;
9810       pointer = gdk_device_get_associated_device (device);
9811     }
9812   else
9813     {
9814       pointer = device;
9815       keyboard = gdk_device_get_associated_device (device);
9816     }
9817
9818   gdk_device_ungrab (pointer, GDK_CURRENT_TIME);
9819   gdk_device_ungrab (keyboard, GDK_CURRENT_TIME);
9820
9821   gtk_grab_remove (button);
9822
9823   send_event = gdk_event_new (GDK_LEAVE_NOTIFY);
9824   send_event->crossing.send_event = TRUE;
9825   send_event->crossing.window = g_object_ref (gtk_button_get_event_window (GTK_BUTTON (button)));
9826   send_event->crossing.subwindow = NULL;
9827   send_event->crossing.detail = GDK_NOTIFY_ANCESTOR;
9828   send_event->crossing.time = GDK_CURRENT_TIME;
9829   gdk_event_set_device (send_event, device);
9830
9831   gtk_propagate_event (button, send_event);
9832   gdk_event_free (send_event);
9833
9834   send_event = gdk_event_new (GDK_BUTTON_RELEASE);
9835   send_event->button.window = g_object_ref (gdk_screen_get_root_window (screen));
9836   send_event->button.send_event = TRUE;
9837   send_event->button.time = GDK_CURRENT_TIME;
9838   send_event->button.x = -1;
9839   send_event->button.y = -1;
9840   send_event->button.axes = NULL;
9841   send_event->button.state = 0;
9842   send_event->button.button = 1;
9843   send_event->button.x_root = 0;
9844   send_event->button.y_root = 0;
9845   gdk_event_set_device (send_event, device);
9846
9847   gtk_propagate_event (button, send_event);
9848   gdk_event_free (send_event);
9849
9850   /* Kids, don't try this at home */
9851   g_object_ref (button);
9852   gtk_container_remove (GTK_CONTAINER (tree_view), button);
9853   gtk_widget_set_parent_window (button, tree_view->priv->drag_window);
9854   gtk_widget_set_parent (button, GTK_WIDGET (tree_view));
9855   g_object_unref (button);
9856
9857   gtk_widget_get_allocation (button, &button_allocation);
9858   tree_view->priv->drag_column_x = button_allocation.x;
9859   allocation = button_allocation;
9860   allocation.x = 0;
9861   gtk_widget_size_allocate (button, &allocation);
9862   gtk_widget_set_parent_window (button, tree_view->priv->drag_window);
9863
9864   tree_view->priv->drag_column = column;
9865   gdk_window_show (tree_view->priv->drag_window);
9866
9867   gtk_widget_grab_focus (GTK_WIDGET (tree_view));
9868   while (gtk_events_pending ())
9869     gtk_main_iteration ();
9870
9871   tree_view->priv->in_column_drag = TRUE;
9872
9873   gdk_device_grab (pointer,
9874                    tree_view->priv->drag_window,
9875                    GDK_OWNERSHIP_NONE,
9876                    FALSE,
9877                    GDK_POINTER_MOTION_MASK|GDK_BUTTON_RELEASE_MASK,
9878                    NULL,
9879                    GDK_CURRENT_TIME);
9880   gdk_device_grab (keyboard,
9881                    tree_view->priv->drag_window,
9882                    GDK_OWNERSHIP_NONE,
9883                    FALSE,
9884                    GDK_KEY_PRESS_MASK|GDK_KEY_RELEASE_MASK,
9885                    NULL,
9886                    GDK_CURRENT_TIME);
9887 }
9888
9889 static void
9890 gtk_tree_view_queue_draw_arrow (GtkTreeView        *tree_view,
9891                                 GtkRBTree          *tree,
9892                                 GtkRBNode          *node)
9893 {
9894   GtkAllocation allocation;
9895   GdkRectangle rect;
9896
9897   if (!gtk_widget_get_realized (GTK_WIDGET (tree_view)))
9898     return;
9899
9900   gtk_widget_get_allocation (GTK_WIDGET (tree_view), &allocation);
9901   rect.x = 0;
9902   rect.width = MAX (tree_view->priv->expander_size, MAX (tree_view->priv->width, allocation.width));
9903
9904   rect.y = gtk_tree_view_get_row_y_offset (tree_view, tree, node);
9905   rect.height = gtk_tree_view_get_row_height (tree_view, node);
9906
9907   gdk_window_invalidate_rect (tree_view->priv->bin_window, &rect, TRUE);
9908 }
9909
9910 void
9911 _gtk_tree_view_queue_draw_node (GtkTreeView        *tree_view,
9912                                 GtkRBTree          *tree,
9913                                 GtkRBNode          *node,
9914                                 const GdkRectangle *clip_rect)
9915 {
9916   GtkAllocation allocation;
9917   GdkRectangle rect;
9918
9919   if (!gtk_widget_get_realized (GTK_WIDGET (tree_view)))
9920     return;
9921
9922   gtk_widget_get_allocation (GTK_WIDGET (tree_view), &allocation);
9923   rect.x = 0;
9924   rect.width = MAX (tree_view->priv->width, allocation.width);
9925
9926   rect.y = gtk_tree_view_get_row_y_offset (tree_view, tree, node);
9927   rect.height = gtk_tree_view_get_row_height (tree_view, node);
9928
9929   if (clip_rect)
9930     {
9931       GdkRectangle new_rect;
9932
9933       gdk_rectangle_intersect (clip_rect, &rect, &new_rect);
9934
9935       gdk_window_invalidate_rect (tree_view->priv->bin_window, &new_rect, TRUE);
9936     }
9937   else
9938     {
9939       gdk_window_invalidate_rect (tree_view->priv->bin_window, &rect, TRUE);
9940     }
9941 }
9942
9943 static inline gint
9944 gtk_tree_view_get_effective_header_height (GtkTreeView *tree_view)
9945 {
9946   if (tree_view->priv->headers_visible)
9947     return tree_view->priv->header_height;
9948   /* else */
9949   return 0;
9950 }
9951
9952 gint
9953 _gtk_tree_view_get_header_height (GtkTreeView *tree_view)
9954 {
9955   return tree_view->priv->header_height;
9956 }
9957
9958 void
9959 _gtk_tree_view_get_row_separator_func (GtkTreeView                 *tree_view,
9960                                        GtkTreeViewRowSeparatorFunc *func,
9961                                        gpointer                    *data)
9962 {
9963   *func = tree_view->priv->row_separator_func;
9964   *data = tree_view->priv->row_separator_data;
9965 }
9966
9967 GtkTreePath *
9968 _gtk_tree_view_get_anchor_path (GtkTreeView *tree_view)
9969 {
9970   if (tree_view->priv->anchor)
9971     return gtk_tree_row_reference_get_path (tree_view->priv->anchor);
9972
9973   return NULL;
9974 }
9975
9976 void
9977 _gtk_tree_view_set_anchor_path (GtkTreeView *tree_view,
9978                                 GtkTreePath *anchor_path)
9979 {
9980   if (tree_view->priv->anchor)
9981     {
9982       gtk_tree_row_reference_free (tree_view->priv->anchor);
9983       tree_view->priv->anchor = NULL;
9984     }
9985
9986   if (anchor_path && tree_view->priv->model)
9987     tree_view->priv->anchor =
9988       gtk_tree_row_reference_new_proxy (G_OBJECT (tree_view),
9989                                         tree_view->priv->model, anchor_path);
9990 }
9991
9992 GtkRBTree *
9993 _gtk_tree_view_get_rbtree (GtkTreeView *tree_view)
9994 {
9995   return tree_view->priv->tree;
9996 }
9997
9998 GdkWindow *
9999 _gtk_tree_view_get_header_window (GtkTreeView *tree_view)
10000 {
10001   return tree_view->priv->header_window;
10002 }
10003
10004 void
10005 _gtk_tree_view_set_focus_column (GtkTreeView       *tree_view,
10006                                  GtkTreeViewColumn *column)
10007 {
10008   tree_view->priv->focus_column = column;
10009 }
10010
10011
10012 static void
10013 gtk_tree_view_queue_draw_path (GtkTreeView        *tree_view,
10014                                GtkTreePath        *path,
10015                                const GdkRectangle *clip_rect)
10016 {
10017   GtkRBTree *tree = NULL;
10018   GtkRBNode *node = NULL;
10019
10020   _gtk_tree_view_find_node (tree_view, path, &tree, &node);
10021
10022   if (tree)
10023     _gtk_tree_view_queue_draw_node (tree_view, tree, node, clip_rect);
10024 }
10025
10026 /* x and y are the mouse position
10027  */
10028 static void
10029 gtk_tree_view_draw_arrow (GtkTreeView *tree_view,
10030                           cairo_t     *cr,
10031                           GtkRBTree   *tree,
10032                           GtkRBNode   *node)
10033 {
10034   GdkRectangle area;
10035   GtkStateFlags state = 0;
10036   GtkStyleContext *context;
10037   GtkWidget *widget;
10038   gint x_offset = 0;
10039   gint x2;
10040   gint vertical_separator;
10041   gint expander_size;
10042   GtkCellRendererState flags;
10043
10044   widget = GTK_WIDGET (tree_view);
10045   context = gtk_widget_get_style_context (widget);
10046
10047   gtk_widget_style_get (widget,
10048                         "vertical-separator", &vertical_separator,
10049                         NULL);
10050   expander_size = tree_view->priv->expander_size - EXPANDER_EXTRA_PADDING;
10051
10052   if (! GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_PARENT))
10053     return;
10054
10055   gtk_tree_view_get_arrow_xrange (tree_view, tree, &x_offset, &x2);
10056
10057   area.x = x_offset;
10058   area.y = gtk_tree_view_get_cell_area_y_offset (tree_view, tree, node,
10059                                                  vertical_separator);
10060   area.width = expander_size;
10061   area.height = gtk_tree_view_get_cell_area_height (tree_view, node,
10062                                                     vertical_separator);
10063
10064   if (!gtk_widget_get_sensitive (widget))
10065     state |= GTK_STATE_FLAG_INSENSITIVE;
10066   else
10067     {
10068       flags = 0;
10069
10070       if (GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_SELECTED))
10071         flags |= GTK_CELL_RENDERER_SELECTED;
10072
10073       state = gtk_cell_renderer_get_state (NULL, widget, flags);
10074
10075       if (node == tree_view->priv->prelight_node &&
10076           tree_view->priv->arrow_prelit)
10077         state |= GTK_STATE_FLAG_PRELIGHT;
10078     }
10079
10080   if (node->children != NULL)
10081     state |= GTK_STATE_FLAG_ACTIVE;
10082
10083   gtk_style_context_save (context);
10084
10085   gtk_style_context_set_state (context, state);
10086   gtk_style_context_add_class (context, GTK_STYLE_CLASS_EXPANDER);
10087
10088   gtk_style_context_push_animatable_region (context, node);
10089
10090   gtk_render_expander (context, cr,
10091                        area.x, area.y,
10092                        area.width, area.height);
10093
10094   gtk_style_context_pop_animatable_region (context);
10095   gtk_style_context_restore (context);
10096 }
10097
10098 static void
10099 gtk_tree_view_focus_to_cursor (GtkTreeView *tree_view)
10100
10101 {
10102   GtkTreePath *cursor_path;
10103
10104   if ((tree_view->priv->tree == NULL) ||
10105       (! gtk_widget_get_realized (GTK_WIDGET (tree_view))))
10106     return;
10107
10108   cursor_path = NULL;
10109   if (tree_view->priv->cursor_node)
10110     cursor_path = _gtk_tree_path_new_from_rbtree (tree_view->priv->cursor_tree,
10111                                                   tree_view->priv->cursor_node);
10112
10113   if (cursor_path == NULL)
10114     {
10115       /* Consult the selection before defaulting to the
10116        * first focusable element
10117        */
10118       GList *selected_rows;
10119       GtkTreeModel *model;
10120       GtkTreeSelection *selection;
10121
10122       selection = gtk_tree_view_get_selection (tree_view);
10123       selected_rows = gtk_tree_selection_get_selected_rows (selection, &model);
10124
10125       if (selected_rows)
10126         {
10127           cursor_path = gtk_tree_path_copy((const GtkTreePath *)(selected_rows->data));
10128           g_list_foreach (selected_rows, (GFunc)gtk_tree_path_free, NULL);
10129           g_list_free (selected_rows);
10130         }
10131       else
10132         {
10133           cursor_path = gtk_tree_path_new_first ();
10134           search_first_focusable_path (tree_view, &cursor_path,
10135                                        TRUE, NULL, NULL);
10136         }
10137
10138       if (cursor_path)
10139         {
10140           if (gtk_tree_selection_get_mode (tree_view->priv->selection) == GTK_SELECTION_MULTIPLE)
10141             gtk_tree_view_real_set_cursor (tree_view, cursor_path, 0);
10142           else
10143             gtk_tree_view_real_set_cursor (tree_view, cursor_path, CLEAR_AND_SELECT);
10144         }
10145     }
10146
10147   if (cursor_path)
10148     {
10149       tree_view->priv->draw_keyfocus = TRUE;
10150
10151       gtk_tree_view_queue_draw_path (tree_view, cursor_path, NULL);
10152       gtk_tree_path_free (cursor_path);
10153
10154       if (tree_view->priv->focus_column == NULL)
10155         {
10156           GList *list;
10157           for (list = tree_view->priv->columns; list; list = list->next)
10158             {
10159               if (gtk_tree_view_column_get_visible (GTK_TREE_VIEW_COLUMN (list->data)))
10160                 {
10161                   GtkCellArea *cell_area;
10162
10163                   tree_view->priv->focus_column = GTK_TREE_VIEW_COLUMN (list->data);
10164
10165                   /* This happens when the treeview initially grabs focus and there
10166                    * is no column in focus, here we explicitly focus into the first cell */
10167                   cell_area = gtk_cell_layout_get_area (GTK_CELL_LAYOUT (tree_view->priv->focus_column));
10168                   if (!gtk_cell_area_get_focus_cell (cell_area))
10169                     {
10170                       gboolean rtl;
10171
10172                       rtl = (gtk_widget_get_direction (GTK_WIDGET (tree_view)) == GTK_TEXT_DIR_RTL);
10173                       gtk_cell_area_focus (cell_area,
10174                                            rtl ? GTK_DIR_LEFT : GTK_DIR_RIGHT);
10175                     }
10176
10177                   break;
10178                 }
10179             }
10180         }
10181     }
10182 }
10183
10184 static void
10185 gtk_tree_view_move_cursor_up_down (GtkTreeView *tree_view,
10186                                    gint         count)
10187 {
10188   gint selection_count;
10189   GtkRBTree *new_cursor_tree = NULL;
10190   GtkRBNode *new_cursor_node = NULL;
10191   GtkTreePath *cursor_path = NULL;
10192   gboolean grab_focus = TRUE;
10193   gboolean selectable;
10194   GtkDirectionType direction;
10195   GtkCellArea *cell_area = NULL;
10196   GtkCellRenderer *last_focus_cell = NULL;
10197   GtkTreeIter iter;
10198
10199   if (! gtk_widget_has_focus (GTK_WIDGET (tree_view)))
10200     return;
10201
10202   if (tree_view->priv->cursor_node == NULL)
10203     return;
10204
10205   cursor_path = _gtk_tree_path_new_from_rbtree (tree_view->priv->cursor_tree,
10206                                                 tree_view->priv->cursor_node);
10207
10208   direction = count < 0 ? GTK_DIR_UP : GTK_DIR_DOWN;
10209
10210   if (tree_view->priv->focus_column)
10211     cell_area = gtk_cell_layout_get_area (GTK_CELL_LAYOUT (tree_view->priv->focus_column));
10212
10213   /* If focus stays in the area for this row, then just return for this round */
10214   if (cell_area && (count == -1 || count == 1) &&
10215       gtk_tree_model_get_iter (tree_view->priv->model, &iter, cursor_path))
10216     {
10217       gtk_tree_view_column_cell_set_cell_data (tree_view->priv->focus_column,
10218                                                tree_view->priv->model,
10219                                                &iter,
10220                                                GTK_RBNODE_FLAG_SET (tree_view->priv->cursor_node, GTK_RBNODE_IS_PARENT),
10221                                                tree_view->priv->cursor_node->children ? TRUE : FALSE);
10222
10223       /* Save the last cell that had focus, if we hit the end of the view we'll give
10224        * focus back to it. */
10225       last_focus_cell = gtk_cell_area_get_focus_cell (cell_area);
10226
10227       /* If focus stays in the area, no need to change the cursor row */
10228       if (gtk_cell_area_focus (cell_area, direction))
10229         return;
10230     }
10231
10232   selection_count = gtk_tree_selection_count_selected_rows (tree_view->priv->selection);
10233   selectable = _gtk_tree_selection_row_is_selectable (tree_view->priv->selection,
10234                                                       tree_view->priv->cursor_node,
10235                                                       cursor_path);
10236
10237   if (selection_count == 0
10238       && gtk_tree_selection_get_mode (tree_view->priv->selection) != GTK_SELECTION_NONE
10239       && !tree_view->priv->modify_selection_pressed
10240       && selectable)
10241     {
10242       /* Don't move the cursor, but just select the current node */
10243       new_cursor_tree = tree_view->priv->cursor_tree;
10244       new_cursor_node = tree_view->priv->cursor_node;
10245     }
10246   else
10247     {
10248       if (count == -1)
10249         _gtk_rbtree_prev_full (tree_view->priv->cursor_tree, tree_view->priv->cursor_node,
10250                                &new_cursor_tree, &new_cursor_node);
10251       else
10252         _gtk_rbtree_next_full (tree_view->priv->cursor_tree, tree_view->priv->cursor_node,
10253                                &new_cursor_tree, &new_cursor_node);
10254     }
10255
10256   gtk_tree_path_free (cursor_path);
10257
10258   if (new_cursor_node)
10259     {
10260       cursor_path = _gtk_tree_path_new_from_rbtree (new_cursor_tree, new_cursor_node);
10261
10262       search_first_focusable_path (tree_view, &cursor_path,
10263                                    (count != -1),
10264                                    &new_cursor_tree,
10265                                    &new_cursor_node);
10266
10267       if (cursor_path)
10268         gtk_tree_path_free (cursor_path);
10269     }
10270
10271   /*
10272    * If the list has only one item and multi-selection is set then select
10273    * the row (if not yet selected).
10274    */
10275   if (gtk_tree_selection_get_mode (tree_view->priv->selection) == GTK_SELECTION_MULTIPLE &&
10276       new_cursor_node == NULL)
10277     {
10278       if (count == -1)
10279         _gtk_rbtree_next_full (tree_view->priv->cursor_tree, tree_view->priv->cursor_node,
10280                                &new_cursor_tree, &new_cursor_node);
10281       else
10282         _gtk_rbtree_prev_full (tree_view->priv->cursor_tree, tree_view->priv->cursor_node,
10283                                &new_cursor_tree, &new_cursor_node);
10284
10285       if (new_cursor_node == NULL
10286           && !GTK_RBNODE_FLAG_SET (tree_view->priv->cursor_node, GTK_RBNODE_IS_SELECTED))
10287         {
10288           new_cursor_node = tree_view->priv->cursor_node;
10289           new_cursor_tree = tree_view->priv->cursor_tree;
10290         }
10291       else
10292         {
10293           new_cursor_tree = NULL;
10294           new_cursor_node = NULL;
10295         }
10296     }
10297
10298   if (new_cursor_node)
10299     {
10300       cursor_path = _gtk_tree_path_new_from_rbtree (new_cursor_tree, new_cursor_node);
10301       gtk_tree_view_real_set_cursor (tree_view, cursor_path, CLEAR_AND_SELECT | CLAMP_NODE);
10302       gtk_tree_path_free (cursor_path);
10303
10304       /* Give focus to the area in the new row */
10305       if (cell_area)
10306         gtk_cell_area_focus (cell_area, direction);
10307     }
10308   else
10309     {
10310       gtk_tree_view_clamp_node_visible (tree_view,
10311                                         tree_view->priv->cursor_tree,
10312                                         tree_view->priv->cursor_node);
10313
10314       if (!tree_view->priv->extend_selection_pressed)
10315         {
10316           if (! gtk_widget_keynav_failed (GTK_WIDGET (tree_view),
10317                                           count < 0 ?
10318                                           GTK_DIR_UP : GTK_DIR_DOWN))
10319             {
10320               GtkWidget *toplevel = gtk_widget_get_toplevel (GTK_WIDGET (tree_view));
10321
10322               if (toplevel)
10323                 gtk_widget_child_focus (toplevel,
10324                                         count < 0 ?
10325                                         GTK_DIR_TAB_BACKWARD :
10326                                         GTK_DIR_TAB_FORWARD);
10327
10328               grab_focus = FALSE;
10329             }
10330         }
10331       else
10332         {
10333           gtk_widget_error_bell (GTK_WIDGET (tree_view));
10334         }
10335
10336       if (cell_area)
10337         gtk_cell_area_set_focus_cell (cell_area, last_focus_cell);
10338     }
10339
10340   if (grab_focus)
10341     gtk_widget_grab_focus (GTK_WIDGET (tree_view));
10342 }
10343
10344 static void
10345 gtk_tree_view_move_cursor_page_up_down (GtkTreeView *tree_view,
10346                                         gint         count)
10347 {
10348   GtkTreePath *old_cursor_path = NULL;
10349   GtkTreePath *cursor_path = NULL;
10350   GtkRBTree *start_cursor_tree = NULL;
10351   GtkRBNode *start_cursor_node = NULL;
10352   GtkRBTree *cursor_tree;
10353   GtkRBNode *cursor_node;
10354   gint y;
10355   gint window_y;
10356   gint vertical_separator;
10357
10358   if (!gtk_widget_has_focus (GTK_WIDGET (tree_view)))
10359     return;
10360
10361   if (tree_view->priv->cursor_node == NULL)
10362     return;
10363
10364   old_cursor_path = _gtk_tree_path_new_from_rbtree (tree_view->priv->cursor_tree,
10365                                                     tree_view->priv->cursor_node);
10366
10367   gtk_widget_style_get (GTK_WIDGET (tree_view), "vertical-separator", &vertical_separator, NULL);
10368
10369   y = _gtk_rbtree_node_find_offset (tree_view->priv->cursor_tree, tree_view->priv->cursor_node);
10370   window_y = RBTREE_Y_TO_TREE_WINDOW_Y (tree_view, y);
10371   y += tree_view->priv->cursor_offset;
10372   y += count * (int)gtk_adjustment_get_page_increment (tree_view->priv->vadjustment);
10373   y = CLAMP (y, (gint)gtk_adjustment_get_lower (tree_view->priv->vadjustment),  (gint)gtk_adjustment_get_upper (tree_view->priv->vadjustment) - vertical_separator);
10374
10375   if (y >= tree_view->priv->height)
10376     y = tree_view->priv->height - 1;
10377
10378   tree_view->priv->cursor_offset =
10379     _gtk_rbtree_find_offset (tree_view->priv->tree, y,
10380                              &cursor_tree, &cursor_node);
10381
10382   if (cursor_tree == NULL)
10383     {
10384       /* FIXME: we lost the cursor.  Should we try to get one? */
10385       gtk_tree_path_free (old_cursor_path);
10386       return;
10387     }
10388
10389   if (tree_view->priv->cursor_offset
10390       > gtk_tree_view_get_row_height (tree_view, cursor_node))
10391     {
10392       _gtk_rbtree_next_full (cursor_tree, cursor_node,
10393                              &cursor_tree, &cursor_node);
10394       tree_view->priv->cursor_offset -= gtk_tree_view_get_row_height (tree_view, cursor_node);
10395     }
10396
10397   y -= tree_view->priv->cursor_offset;
10398   cursor_path = _gtk_tree_path_new_from_rbtree (cursor_tree, cursor_node);
10399
10400   start_cursor_tree = cursor_tree;
10401   start_cursor_node = cursor_node;
10402
10403   if (! search_first_focusable_path (tree_view, &cursor_path,
10404                                      (count != -1),
10405                                      &cursor_tree, &cursor_node))
10406     {
10407       /* It looks like we reached the end of the view without finding
10408        * a focusable row.  We will step backwards to find the last
10409        * focusable row.
10410        */
10411       cursor_tree = start_cursor_tree;
10412       cursor_node = start_cursor_node;
10413       cursor_path = _gtk_tree_path_new_from_rbtree (cursor_tree, cursor_node);
10414
10415       search_first_focusable_path (tree_view, &cursor_path,
10416                                    (count == -1),
10417                                    &cursor_tree, &cursor_node);
10418     }
10419
10420   if (!cursor_path)
10421     goto cleanup;
10422
10423   /* update y */
10424   y = _gtk_rbtree_node_find_offset (cursor_tree, cursor_node);
10425
10426   gtk_tree_view_real_set_cursor (tree_view, cursor_path, CLEAR_AND_SELECT);
10427
10428   y -= window_y;
10429   gtk_tree_view_scroll_to_point (tree_view, -1, y);
10430   gtk_tree_view_clamp_node_visible (tree_view, cursor_tree, cursor_node);
10431   _gtk_tree_view_queue_draw_node (tree_view, cursor_tree, cursor_node, NULL);
10432
10433   if (!gtk_tree_path_compare (old_cursor_path, cursor_path))
10434     gtk_widget_error_bell (GTK_WIDGET (tree_view));
10435
10436   gtk_widget_grab_focus (GTK_WIDGET (tree_view));
10437
10438 cleanup:
10439   gtk_tree_path_free (old_cursor_path);
10440   gtk_tree_path_free (cursor_path);
10441 }
10442
10443 static void
10444 gtk_tree_view_move_cursor_left_right (GtkTreeView *tree_view,
10445                                       gint         count)
10446 {
10447   GtkTreePath *cursor_path = NULL;
10448   GtkTreeViewColumn *column;
10449   GtkTreeIter iter;
10450   GList *list;
10451   gboolean found_column = FALSE;
10452   gboolean rtl;
10453   GtkDirectionType direction;
10454   GtkCellArea     *cell_area;
10455   GtkCellRenderer *last_focus_cell = NULL;
10456   GtkCellArea     *last_focus_area = NULL;
10457
10458   rtl = (gtk_widget_get_direction (GTK_WIDGET (tree_view)) == GTK_TEXT_DIR_RTL);
10459
10460   if (!gtk_widget_has_focus (GTK_WIDGET (tree_view)))
10461     return;
10462
10463   if (tree_view->priv->cursor_node == NULL)
10464     return;
10465
10466   cursor_path = _gtk_tree_path_new_from_rbtree (tree_view->priv->cursor_tree,
10467                                                 tree_view->priv->cursor_node);
10468
10469   if (gtk_tree_model_get_iter (tree_view->priv->model, &iter, cursor_path) == FALSE)
10470     {
10471       gtk_tree_path_free (cursor_path);
10472       return;
10473     }
10474   gtk_tree_path_free (cursor_path);
10475
10476   list = rtl ? g_list_last (tree_view->priv->columns) : g_list_first (tree_view->priv->columns);
10477   if (tree_view->priv->focus_column)
10478     {
10479       /* Save the cell/area we are moving focus from, if moving the cursor
10480        * by one step hits the end we'll set focus back here */
10481       last_focus_area = gtk_cell_layout_get_area (GTK_CELL_LAYOUT (tree_view->priv->focus_column));
10482       last_focus_cell = gtk_cell_area_get_focus_cell (last_focus_area);
10483
10484       for (; list; list = (rtl ? list->prev : list->next))
10485         {
10486           if (list->data == tree_view->priv->focus_column)
10487             break;
10488         }
10489     }
10490
10491   direction = count > 0 ? GTK_DIR_RIGHT : GTK_DIR_LEFT;
10492
10493   while (list)
10494     {
10495       column = list->data;
10496       if (gtk_tree_view_column_get_visible (column) == FALSE)
10497         goto loop_end;
10498
10499       gtk_tree_view_column_cell_set_cell_data (column,
10500                                                tree_view->priv->model,
10501                                                &iter,
10502                                                GTK_RBNODE_FLAG_SET (tree_view->priv->cursor_node, GTK_RBNODE_IS_PARENT),
10503                                                tree_view->priv->cursor_node->children ? TRUE : FALSE);
10504
10505       cell_area = gtk_cell_layout_get_area (GTK_CELL_LAYOUT (column));
10506       if (gtk_cell_area_focus (cell_area, direction))
10507         {
10508           tree_view->priv->focus_column = column;
10509           found_column = TRUE;
10510           break;
10511         }
10512
10513     loop_end:
10514       if (count == 1)
10515         list = rtl ? list->prev : list->next;
10516       else
10517         list = rtl ? list->next : list->prev;
10518     }
10519
10520   if (found_column)
10521     {
10522       if (!gtk_tree_view_has_can_focus_cell (tree_view))
10523         _gtk_tree_view_queue_draw_node (tree_view,
10524                                         tree_view->priv->cursor_tree,
10525                                         tree_view->priv->cursor_node,
10526                                         NULL);
10527       g_signal_emit (tree_view, tree_view_signals[CURSOR_CHANGED], 0);
10528       gtk_widget_grab_focus (GTK_WIDGET (tree_view));
10529     }
10530   else
10531     {
10532       gtk_widget_error_bell (GTK_WIDGET (tree_view));
10533
10534       if (last_focus_area)
10535         gtk_cell_area_set_focus_cell (last_focus_area, last_focus_cell);
10536     }
10537
10538   gtk_tree_view_clamp_column_visible (tree_view,
10539                                       tree_view->priv->focus_column, TRUE);
10540 }
10541
10542 static void
10543 gtk_tree_view_move_cursor_start_end (GtkTreeView *tree_view,
10544                                      gint         count)
10545 {
10546   GtkRBTree *cursor_tree;
10547   GtkRBNode *cursor_node;
10548   GtkTreePath *path;
10549   GtkTreePath *old_path;
10550
10551   if (!gtk_widget_has_focus (GTK_WIDGET (tree_view)))
10552     return;
10553
10554   g_return_if_fail (tree_view->priv->tree != NULL);
10555
10556   gtk_tree_view_get_cursor (tree_view, &old_path, NULL);
10557
10558   cursor_tree = tree_view->priv->tree;
10559
10560   if (count == -1)
10561     {
10562       cursor_node = _gtk_rbtree_first (cursor_tree);
10563
10564       /* Now go forward to find the first focusable row. */
10565       path = _gtk_tree_path_new_from_rbtree (cursor_tree, cursor_node);
10566       search_first_focusable_path (tree_view, &path,
10567                                    TRUE, &cursor_tree, &cursor_node);
10568     }
10569   else
10570     {
10571       cursor_node = cursor_tree->root;
10572
10573       do
10574         {
10575           while (cursor_node && !_gtk_rbtree_is_nil (cursor_node->right))
10576             cursor_node = cursor_node->right;
10577           if (cursor_node->children == NULL)
10578             break;
10579
10580           cursor_tree = cursor_node->children;
10581           cursor_node = cursor_tree->root;
10582         }
10583       while (1);
10584
10585       /* Now go backwards to find last focusable row. */
10586       path = _gtk_tree_path_new_from_rbtree (cursor_tree, cursor_node);
10587       search_first_focusable_path (tree_view, &path,
10588                                    FALSE, &cursor_tree, &cursor_node);
10589     }
10590
10591   if (!path)
10592     goto cleanup;
10593
10594   if (gtk_tree_path_compare (old_path, path))
10595     {
10596       gtk_tree_view_real_set_cursor (tree_view, path, CLEAR_AND_SELECT | CLAMP_NODE);
10597       gtk_widget_grab_focus (GTK_WIDGET (tree_view));
10598     }
10599   else
10600     {
10601       gtk_widget_error_bell (GTK_WIDGET (tree_view));
10602     }
10603
10604 cleanup:
10605   gtk_tree_path_free (old_path);
10606   gtk_tree_path_free (path);
10607 }
10608
10609 static gboolean
10610 gtk_tree_view_real_select_all (GtkTreeView *tree_view)
10611 {
10612   if (!gtk_widget_has_focus (GTK_WIDGET (tree_view)))
10613     return FALSE;
10614
10615   if (gtk_tree_selection_get_mode (tree_view->priv->selection) != GTK_SELECTION_MULTIPLE)
10616     return FALSE;
10617
10618   gtk_tree_selection_select_all (tree_view->priv->selection);
10619
10620   return TRUE;
10621 }
10622
10623 static gboolean
10624 gtk_tree_view_real_unselect_all (GtkTreeView *tree_view)
10625 {
10626   if (!gtk_widget_has_focus (GTK_WIDGET (tree_view)))
10627     return FALSE;
10628
10629   if (gtk_tree_selection_get_mode (tree_view->priv->selection) != GTK_SELECTION_MULTIPLE)
10630     return FALSE;
10631
10632   gtk_tree_selection_unselect_all (tree_view->priv->selection);
10633
10634   return TRUE;
10635 }
10636
10637 static gboolean
10638 gtk_tree_view_real_select_cursor_row (GtkTreeView *tree_view,
10639                                       gboolean     start_editing)
10640 {
10641   GtkRBTree *new_tree = NULL;
10642   GtkRBNode *new_node = NULL;
10643   GtkRBTree *cursor_tree = NULL;
10644   GtkRBNode *cursor_node = NULL;
10645   GtkTreePath *cursor_path = NULL;
10646   GtkTreeSelectMode mode = 0;
10647
10648   if (!gtk_widget_has_focus (GTK_WIDGET (tree_view)))
10649     return FALSE;
10650
10651   if (tree_view->priv->cursor_node == NULL)
10652     return FALSE;
10653
10654   cursor_path = _gtk_tree_path_new_from_rbtree (tree_view->priv->cursor_tree,
10655                                                 tree_view->priv->cursor_node);
10656
10657   _gtk_tree_view_find_node (tree_view, cursor_path,
10658                             &cursor_tree, &cursor_node);
10659
10660   if (cursor_tree == NULL)
10661     {
10662       gtk_tree_path_free (cursor_path);
10663       return FALSE;
10664     }
10665
10666   if (!tree_view->priv->extend_selection_pressed && start_editing &&
10667       tree_view->priv->focus_column)
10668     {
10669       if (gtk_tree_view_start_editing (tree_view, cursor_path, FALSE))
10670         {
10671           gtk_tree_path_free (cursor_path);
10672           return TRUE;
10673         }
10674     }
10675
10676   if (tree_view->priv->modify_selection_pressed)
10677     mode |= GTK_TREE_SELECT_MODE_TOGGLE;
10678   if (tree_view->priv->extend_selection_pressed)
10679     mode |= GTK_TREE_SELECT_MODE_EXTEND;
10680
10681   _gtk_tree_selection_internal_select_node (tree_view->priv->selection,
10682                                             cursor_node,
10683                                             cursor_tree,
10684                                             cursor_path,
10685                                             mode,
10686                                             FALSE);
10687
10688   /* We bail out if the original (tree, node) don't exist anymore after
10689    * handling the selection-changed callback.  We do return TRUE because
10690    * the key press has been handled at this point.
10691    */
10692   _gtk_tree_view_find_node (tree_view, cursor_path, &new_tree, &new_node);
10693
10694   if (cursor_tree != new_tree || cursor_node != new_node)
10695     return FALSE;
10696
10697   gtk_tree_view_clamp_node_visible (tree_view, cursor_tree, cursor_node);
10698
10699   gtk_widget_grab_focus (GTK_WIDGET (tree_view));
10700   _gtk_tree_view_queue_draw_node (tree_view, cursor_tree, cursor_node, NULL);
10701
10702   if (!tree_view->priv->extend_selection_pressed)
10703     gtk_tree_view_row_activated (tree_view, cursor_path,
10704                                  tree_view->priv->focus_column);
10705
10706   gtk_tree_path_free (cursor_path);
10707
10708   return TRUE;
10709 }
10710
10711 static gboolean
10712 gtk_tree_view_real_toggle_cursor_row (GtkTreeView *tree_view)
10713 {
10714   GtkRBTree *new_tree = NULL;
10715   GtkRBNode *new_node = NULL;
10716   GtkRBTree *cursor_tree = NULL;
10717   GtkRBNode *cursor_node = NULL;
10718   GtkTreePath *cursor_path = NULL;
10719
10720   if (!gtk_widget_has_focus (GTK_WIDGET (tree_view)))
10721     return FALSE;
10722
10723   if (tree_view->priv->cursor_node == NULL)
10724     return FALSE;
10725
10726   cursor_path = _gtk_tree_path_new_from_rbtree (tree_view->priv->cursor_tree,
10727                                                 tree_view->priv->cursor_node);
10728
10729   _gtk_tree_selection_internal_select_node (tree_view->priv->selection,
10730                                             cursor_node,
10731                                             cursor_tree,
10732                                             cursor_path,
10733                                             GTK_TREE_SELECT_MODE_TOGGLE,
10734                                             FALSE);
10735
10736   /* We bail out if the original (tree, node) don't exist anymore after
10737    * handling the selection-changed callback.  We do return TRUE because
10738    * the key press has been handled at this point.
10739    */
10740   _gtk_tree_view_find_node (tree_view, cursor_path, &new_tree, &new_node);
10741
10742   if (tree_view->priv->cursor_node != new_node)
10743     return FALSE;
10744
10745   gtk_tree_view_clamp_node_visible (tree_view,
10746                                     tree_view->priv->cursor_tree,
10747                                     tree_view->priv->cursor_node);
10748
10749   gtk_widget_grab_focus (GTK_WIDGET (tree_view));
10750   gtk_tree_view_queue_draw_path (tree_view, cursor_path, NULL);
10751   gtk_tree_path_free (cursor_path);
10752
10753   return TRUE;
10754 }
10755
10756 static gboolean
10757 gtk_tree_view_real_expand_collapse_cursor_row (GtkTreeView *tree_view,
10758                                                gboolean     logical,
10759                                                gboolean     expand,
10760                                                gboolean     open_all)
10761 {
10762   GtkTreePath *cursor_path = NULL;
10763
10764   if (!gtk_widget_has_focus (GTK_WIDGET (tree_view)))
10765     return FALSE;
10766
10767   if (tree_view->priv->cursor_node == NULL)
10768     return FALSE;
10769
10770   cursor_path = _gtk_tree_path_new_from_rbtree (tree_view->priv->cursor_tree,
10771                                                 tree_view->priv->cursor_node);
10772
10773   /* Don't handle the event if we aren't an expander */
10774   if (!GTK_RBNODE_FLAG_SET (tree_view->priv->cursor_node, GTK_RBNODE_IS_PARENT))
10775     return FALSE;
10776
10777   if (!logical
10778       && gtk_widget_get_direction (GTK_WIDGET (tree_view)) == GTK_TEXT_DIR_RTL)
10779     expand = !expand;
10780
10781   if (expand)
10782     gtk_tree_view_real_expand_row (tree_view,
10783                                    cursor_path,
10784                                    tree_view->priv->cursor_tree,
10785                                    tree_view->priv->cursor_node,
10786                                    open_all,
10787                                    TRUE);
10788   else
10789     gtk_tree_view_real_collapse_row (tree_view,
10790                                      cursor_path,
10791                                      tree_view->priv->cursor_tree,
10792                                      tree_view->priv->cursor_node,
10793                                      TRUE);
10794
10795   gtk_tree_path_free (cursor_path);
10796
10797   return TRUE;
10798 }
10799
10800 static gboolean
10801 gtk_tree_view_real_select_cursor_parent (GtkTreeView *tree_view)
10802 {
10803   GtkTreePath *cursor_path = NULL;
10804   GdkModifierType state;
10805
10806   if (!gtk_widget_has_focus (GTK_WIDGET (tree_view)))
10807     goto out;
10808
10809   if (tree_view->priv->cursor_node == NULL)
10810     goto out;
10811
10812   cursor_path = _gtk_tree_path_new_from_rbtree (tree_view->priv->cursor_tree,
10813                                                 tree_view->priv->cursor_node);
10814
10815   if (tree_view->priv->cursor_tree->parent_node)
10816     {
10817       gtk_tree_view_queue_draw_path (tree_view, cursor_path, NULL);
10818
10819       gtk_tree_path_up (cursor_path);
10820
10821       if (gtk_get_current_event_state (&state))
10822         {
10823           GdkModifierType modify_mod_mask;
10824
10825           modify_mod_mask =
10826             gtk_widget_get_modifier_mask (GTK_WIDGET (tree_view),
10827                                           GDK_MODIFIER_INTENT_MODIFY_SELECTION);
10828
10829           if ((state & modify_mod_mask) == modify_mod_mask)
10830             tree_view->priv->modify_selection_pressed = TRUE;
10831         }
10832
10833       gtk_tree_view_real_set_cursor (tree_view, cursor_path, CLEAR_AND_SELECT | CLAMP_NODE);
10834       gtk_tree_path_free (cursor_path);
10835
10836       gtk_widget_grab_focus (GTK_WIDGET (tree_view));
10837
10838       tree_view->priv->modify_selection_pressed = FALSE;
10839
10840       return TRUE;
10841     }
10842
10843  out:
10844
10845   tree_view->priv->search_entry_avoid_unhandled_binding = TRUE;
10846   return FALSE;
10847 }
10848
10849 static gboolean
10850 gtk_tree_view_search_entry_flush_timeout (GtkTreeView *tree_view)
10851 {
10852   gtk_tree_view_search_dialog_hide (tree_view->priv->search_window, tree_view, NULL);
10853   tree_view->priv->typeselect_flush_timeout = 0;
10854
10855   return FALSE;
10856 }
10857
10858 /* Cut and paste from gtkwindow.c */
10859 static void
10860 send_focus_change (GtkWidget *widget,
10861                    GdkDevice *device,
10862                    gboolean   in)
10863 {
10864   GdkDeviceManager *device_manager;
10865   GList *devices, *d;
10866
10867   device_manager = gdk_display_get_device_manager (gtk_widget_get_display (widget));
10868   devices = gdk_device_manager_list_devices (device_manager, GDK_DEVICE_TYPE_MASTER);
10869   devices = g_list_concat (devices, gdk_device_manager_list_devices (device_manager, GDK_DEVICE_TYPE_SLAVE));
10870   devices = g_list_concat (devices, gdk_device_manager_list_devices (device_manager, GDK_DEVICE_TYPE_FLOATING));
10871
10872   for (d = devices; d; d = d->next)
10873     {
10874       GdkDevice *dev = d->data;
10875       GdkEvent *fevent;
10876       GdkWindow *window;
10877
10878       if (gdk_device_get_source (dev) != GDK_SOURCE_KEYBOARD)
10879         continue;
10880
10881       window = gtk_widget_get_window (widget);
10882
10883       /* Skip non-master keyboards that haven't
10884        * selected for events from this window
10885        */
10886       if (gdk_device_get_device_type (dev) != GDK_DEVICE_TYPE_MASTER &&
10887           !gdk_window_get_device_events (window, dev))
10888         continue;
10889
10890       fevent = gdk_event_new (GDK_FOCUS_CHANGE);
10891
10892       fevent->focus_change.type = GDK_FOCUS_CHANGE;
10893       fevent->focus_change.window = g_object_ref (window);
10894       fevent->focus_change.in = in;
10895       gdk_event_set_device (fevent, device);
10896
10897       gtk_widget_send_focus_change (widget, fevent);
10898
10899       gdk_event_free (fevent);
10900     }
10901
10902   g_list_free (devices);
10903 }
10904
10905 static void
10906 gtk_tree_view_ensure_interactive_directory (GtkTreeView *tree_view)
10907 {
10908   GtkWidget *frame, *vbox, *toplevel;
10909   GdkScreen *screen;
10910
10911   if (tree_view->priv->search_custom_entry_set)
10912     return;
10913
10914   toplevel = gtk_widget_get_toplevel (GTK_WIDGET (tree_view));
10915   screen = gtk_widget_get_screen (GTK_WIDGET (tree_view));
10916
10917    if (tree_view->priv->search_window != NULL)
10918      {
10919        if (gtk_window_has_group (GTK_WINDOW (toplevel)))
10920          gtk_window_group_add_window (gtk_window_get_group (GTK_WINDOW (toplevel)),
10921                                       GTK_WINDOW (tree_view->priv->search_window));
10922        else if (gtk_window_has_group (GTK_WINDOW (tree_view->priv->search_window)))
10923          gtk_window_group_remove_window (gtk_window_get_group (GTK_WINDOW (tree_view->priv->search_window)),
10924                                          GTK_WINDOW (tree_view->priv->search_window));
10925
10926        gtk_window_set_screen (GTK_WINDOW (tree_view->priv->search_window), screen);
10927
10928        return;
10929      }
10930
10931   tree_view->priv->search_window = gtk_window_new (GTK_WINDOW_POPUP);
10932   gtk_window_set_screen (GTK_WINDOW (tree_view->priv->search_window), screen);
10933
10934   if (gtk_window_has_group (GTK_WINDOW (toplevel)))
10935     gtk_window_group_add_window (gtk_window_get_group (GTK_WINDOW (toplevel)),
10936                                  GTK_WINDOW (tree_view->priv->search_window));
10937
10938   gtk_window_set_type_hint (GTK_WINDOW (tree_view->priv->search_window),
10939                             GDK_WINDOW_TYPE_HINT_UTILITY);
10940   gtk_window_set_modal (GTK_WINDOW (tree_view->priv->search_window), TRUE);
10941   g_signal_connect (tree_view->priv->search_window, "delete-event",
10942                     G_CALLBACK (gtk_tree_view_search_delete_event),
10943                     tree_view);
10944   g_signal_connect (tree_view->priv->search_window, "key-press-event",
10945                     G_CALLBACK (gtk_tree_view_search_key_press_event),
10946                     tree_view);
10947   g_signal_connect (tree_view->priv->search_window, "button-press-event",
10948                     G_CALLBACK (gtk_tree_view_search_button_press_event),
10949                     tree_view);
10950   g_signal_connect (tree_view->priv->search_window, "scroll-event",
10951                     G_CALLBACK (gtk_tree_view_search_scroll_event),
10952                     tree_view);
10953
10954   frame = gtk_frame_new (NULL);
10955   gtk_frame_set_shadow_type (GTK_FRAME (frame), GTK_SHADOW_ETCHED_IN);
10956   gtk_widget_show (frame);
10957   gtk_container_add (GTK_CONTAINER (tree_view->priv->search_window), frame);
10958
10959   vbox = gtk_box_new (GTK_ORIENTATION_VERTICAL, 0);
10960   gtk_widget_show (vbox);
10961   gtk_container_add (GTK_CONTAINER (frame), vbox);
10962   gtk_container_set_border_width (GTK_CONTAINER (vbox), 3);
10963
10964   /* add entry */
10965   tree_view->priv->search_entry = gtk_entry_new ();
10966   gtk_widget_show (tree_view->priv->search_entry);
10967   g_signal_connect (tree_view->priv->search_entry, "populate-popup",
10968                     G_CALLBACK (gtk_tree_view_search_disable_popdown),
10969                     tree_view);
10970   g_signal_connect (tree_view->priv->search_entry,
10971                     "activate", G_CALLBACK (gtk_tree_view_search_activate),
10972                     tree_view);
10973
10974   g_signal_connect (_gtk_entry_get_im_context (GTK_ENTRY (tree_view->priv->search_entry)),
10975                     "preedit-changed",
10976                     G_CALLBACK (gtk_tree_view_search_preedit_changed),
10977                     tree_view);
10978
10979   gtk_container_add (GTK_CONTAINER (vbox),
10980                      tree_view->priv->search_entry);
10981
10982   gtk_widget_realize (tree_view->priv->search_entry);
10983 }
10984
10985 /* Pops up the interactive search entry.  If keybinding is TRUE then the user
10986  * started this by typing the start_interactive_search keybinding.  Otherwise, it came from
10987  */
10988 static gboolean
10989 gtk_tree_view_real_start_interactive_search (GtkTreeView *tree_view,
10990                                              GdkDevice   *device,
10991                                              gboolean     keybinding)
10992 {
10993   /* We only start interactive search if we have focus or the columns
10994    * have focus.  If one of our children have focus, we don't want to
10995    * start the search.
10996    */
10997   GList *list;
10998   gboolean found_focus = FALSE;
10999   GtkWidgetClass *entry_parent_class;
11000
11001   if (!tree_view->priv->enable_search && !keybinding)
11002     return FALSE;
11003
11004   if (tree_view->priv->search_custom_entry_set)
11005     return FALSE;
11006
11007   if (tree_view->priv->search_window != NULL &&
11008       gtk_widget_get_visible (tree_view->priv->search_window))
11009     return TRUE;
11010
11011   for (list = tree_view->priv->columns; list; list = list->next)
11012     {
11013       GtkTreeViewColumn *column;
11014       GtkWidget         *button;
11015
11016       column = list->data;
11017       if (!gtk_tree_view_column_get_visible (column))
11018         continue;
11019
11020       button = gtk_tree_view_column_get_button (column);
11021       if (gtk_widget_has_focus (button))
11022         {
11023           found_focus = TRUE;
11024           break;
11025         }
11026     }
11027
11028   if (gtk_widget_has_focus (GTK_WIDGET (tree_view)))
11029     found_focus = TRUE;
11030
11031   if (!found_focus)
11032     return FALSE;
11033
11034   if (tree_view->priv->search_column < 0)
11035     return FALSE;
11036
11037   gtk_tree_view_ensure_interactive_directory (tree_view);
11038
11039   if (keybinding)
11040     gtk_entry_set_text (GTK_ENTRY (tree_view->priv->search_entry), "");
11041
11042   /* done, show it */
11043   tree_view->priv->search_position_func (tree_view, tree_view->priv->search_window, tree_view->priv->search_position_user_data);
11044   gtk_widget_show (tree_view->priv->search_window);
11045   if (tree_view->priv->search_entry_changed_id == 0)
11046     {
11047       tree_view->priv->search_entry_changed_id =
11048         g_signal_connect (tree_view->priv->search_entry, "changed",
11049                           G_CALLBACK (gtk_tree_view_search_init),
11050                           tree_view);
11051     }
11052
11053   tree_view->priv->typeselect_flush_timeout =
11054     gdk_threads_add_timeout (GTK_TREE_VIEW_SEARCH_DIALOG_TIMEOUT,
11055                    (GSourceFunc) gtk_tree_view_search_entry_flush_timeout,
11056                    tree_view);
11057
11058   /* Grab focus will select all the text.  We don't want that to happen, so we
11059    * call the parent instance and bypass the selection change.  This is probably
11060    * really non-kosher. */
11061   entry_parent_class = g_type_class_peek_parent (GTK_ENTRY_GET_CLASS (tree_view->priv->search_entry));
11062   (entry_parent_class->grab_focus) (tree_view->priv->search_entry);
11063
11064   /* send focus-in event */
11065   send_focus_change (tree_view->priv->search_entry, device, TRUE);
11066
11067   /* search first matching iter */
11068   gtk_tree_view_search_init (tree_view->priv->search_entry, tree_view);
11069
11070   return TRUE;
11071 }
11072
11073 static gboolean
11074 gtk_tree_view_start_interactive_search (GtkTreeView *tree_view)
11075 {
11076   return gtk_tree_view_real_start_interactive_search (tree_view,
11077                                                       gtk_get_current_event_device (),
11078                                                       TRUE);
11079 }
11080
11081 /* this function returns the new width of the column being resized given
11082  * the column and x position of the cursor; the x cursor position is passed
11083  * in as a pointer and automagicly corrected if it's beyond min/max limits
11084  */
11085 static gint
11086 gtk_tree_view_new_column_width (GtkTreeView *tree_view,
11087                                 gint       i,
11088                                 gint      *x)
11089 {
11090   GtkAllocation allocation;
11091   GtkTreeViewColumn *column;
11092   GtkRequisition button_req;
11093   gint max_width, min_width;
11094   gint width;
11095   gboolean rtl;
11096
11097   /* first translate the x position from widget->window
11098    * to clist->clist_window
11099    */
11100   rtl = (gtk_widget_get_direction (GTK_WIDGET (tree_view)) == GTK_TEXT_DIR_RTL);
11101   column = g_list_nth (tree_view->priv->columns, i)->data;
11102   gtk_widget_get_allocation (gtk_tree_view_column_get_button (column), &allocation);
11103   width = rtl ? (allocation.x + allocation.width - *x) : (*x - allocation.x);
11104
11105   /* Clamp down the value */
11106   min_width = gtk_tree_view_column_get_min_width (column);
11107   if (min_width == -1)
11108     {
11109       gtk_widget_get_preferred_size (gtk_tree_view_column_get_button (column), &button_req, NULL);
11110       width = MAX (button_req.width, width);
11111     }
11112   else
11113     width = MAX (min_width, width);
11114
11115   max_width = gtk_tree_view_column_get_max_width (column);
11116   if (max_width != -1)
11117     width = MIN (width, max_width);
11118
11119   *x = rtl ? (allocation.x + allocation.width - width) : (allocation.x + width);
11120
11121   return width;
11122 }
11123
11124
11125 /* FIXME this adjust_allocation is a big cut-and-paste from
11126  * GtkCList, needs to be some "official" way to do this
11127  * factored out.
11128  */
11129 typedef struct
11130 {
11131   GdkWindow *window;
11132   int dx;
11133   int dy;
11134 } ScrollData;
11135
11136 /* The window to which widget->window is relative */
11137 #define ALLOCATION_WINDOW(widget)               \
11138    (!gtk_widget_get_has_window (widget) ?                   \
11139     gtk_widget_get_window (widget) :                        \
11140     gdk_window_get_parent (gtk_widget_get_window (widget)))
11141
11142 static void
11143 adjust_allocation_recurse (GtkWidget *widget,
11144                            gpointer   data)
11145 {
11146   GtkAllocation allocation;
11147   ScrollData *scroll_data = data;
11148
11149   /* Need to really size allocate instead of just poking
11150    * into widget->allocation if the widget is not realized.
11151    * FIXME someone figure out why this was.
11152    */
11153   gtk_widget_get_allocation (widget, &allocation);
11154   if (!gtk_widget_get_realized (widget))
11155     {
11156       if (gtk_widget_get_visible (widget))
11157         {
11158           GdkRectangle tmp_rectangle = allocation;
11159           tmp_rectangle.x += scroll_data->dx;
11160           tmp_rectangle.y += scroll_data->dy;
11161
11162           gtk_widget_size_allocate (widget, &tmp_rectangle);
11163         }
11164     }
11165   else
11166     {
11167       if (ALLOCATION_WINDOW (widget) == scroll_data->window)
11168         {
11169           allocation.x += scroll_data->dx;
11170           allocation.y += scroll_data->dy;
11171           gtk_widget_set_allocation (widget, &allocation);
11172
11173           if (GTK_IS_CONTAINER (widget))
11174             gtk_container_forall (GTK_CONTAINER (widget),
11175                                   adjust_allocation_recurse,
11176                                   data);
11177         }
11178     }
11179 }
11180
11181 static void
11182 adjust_allocation (GtkWidget *widget,
11183                    int        dx,
11184                    int        dy)
11185 {
11186   ScrollData scroll_data;
11187
11188   if (gtk_widget_get_realized (widget))
11189     scroll_data.window = ALLOCATION_WINDOW (widget);
11190   else
11191     scroll_data.window = NULL;
11192
11193   scroll_data.dx = dx;
11194   scroll_data.dy = dy;
11195
11196   adjust_allocation_recurse (widget, &scroll_data);
11197 }
11198
11199 /* Callbacks */
11200 static void
11201 gtk_tree_view_adjustment_changed (GtkAdjustment *adjustment,
11202                                   GtkTreeView   *tree_view)
11203 {
11204   if (gtk_widget_get_realized (GTK_WIDGET (tree_view)))
11205     {
11206       GtkStyleContext *context;
11207       gint dy;
11208
11209       gdk_window_move (tree_view->priv->bin_window,
11210                        - gtk_adjustment_get_value (tree_view->priv->hadjustment),
11211                        gtk_tree_view_get_effective_header_height (tree_view));
11212       gdk_window_move (tree_view->priv->header_window,
11213                        - gtk_adjustment_get_value (tree_view->priv->hadjustment),
11214                        0);
11215       dy = tree_view->priv->dy - (int) gtk_adjustment_get_value (tree_view->priv->vadjustment);
11216       if (dy)
11217         {
11218           update_prelight (tree_view,
11219                            tree_view->priv->event_last_x,
11220                            tree_view->priv->event_last_y - dy);
11221
11222           if (tree_view->priv->edited_column)
11223             {
11224               GList *list;
11225               GtkTreeViewChild *child = NULL;
11226               GtkCellEditable *edit_widget;
11227               GtkCellArea *area;
11228
11229               area        = gtk_cell_layout_get_area (GTK_CELL_LAYOUT (tree_view->priv->edited_column));
11230               edit_widget = gtk_cell_area_get_edit_widget (area);
11231               if (GTK_IS_WIDGET (edit_widget))
11232                 {
11233                   adjust_allocation (GTK_WIDGET (edit_widget), 0, dy);
11234
11235                   for (list = tree_view->priv->children; list; list = list->next)
11236                     {
11237                       child = (GtkTreeViewChild *)list->data;
11238                       if (child->widget == GTK_WIDGET (edit_widget))
11239                         {
11240                           child->y += dy;
11241                           break;
11242                         }
11243                     }
11244                 }
11245             }
11246         }
11247       gdk_window_scroll (tree_view->priv->bin_window, 0, dy);
11248
11249       context = gtk_widget_get_style_context (GTK_WIDGET (tree_view));
11250       gtk_style_context_scroll_animations (context, tree_view->priv->bin_window, 0, dy);
11251
11252       if (tree_view->priv->dy != (int) gtk_adjustment_get_value (tree_view->priv->vadjustment))
11253         {
11254           /* update our dy and top_row */
11255           tree_view->priv->dy = (int) gtk_adjustment_get_value (tree_view->priv->vadjustment);
11256
11257           if (!tree_view->priv->in_top_row_to_dy)
11258             gtk_tree_view_dy_to_top_row (tree_view);
11259         }
11260
11261       gdk_window_process_updates (tree_view->priv->header_window, TRUE);
11262       gtk_tree_view_bin_process_updates (tree_view);
11263     }
11264 }
11265
11266 \f
11267
11268 /* Public methods
11269  */
11270
11271 /**
11272  * gtk_tree_view_new:
11273  *
11274  * Creates a new #GtkTreeView widget.
11275  *
11276  * Return value: A newly created #GtkTreeView widget.
11277  **/
11278 GtkWidget *
11279 gtk_tree_view_new (void)
11280 {
11281   return g_object_new (GTK_TYPE_TREE_VIEW, NULL);
11282 }
11283
11284 /**
11285  * gtk_tree_view_new_with_model:
11286  * @model: the model.
11287  *
11288  * Creates a new #GtkTreeView widget with the model initialized to @model.
11289  *
11290  * Return value: A newly created #GtkTreeView widget.
11291  **/
11292 GtkWidget *
11293 gtk_tree_view_new_with_model (GtkTreeModel *model)
11294 {
11295   return g_object_new (GTK_TYPE_TREE_VIEW, "model", model, NULL);
11296 }
11297
11298 /* Public Accessors
11299  */
11300
11301 /**
11302  * gtk_tree_view_get_model:
11303  * @tree_view: a #GtkTreeView
11304  *
11305  * Returns the model the #GtkTreeView is based on.  Returns %NULL if the
11306  * model is unset.
11307  *
11308  * Return value: (transfer none): A #GtkTreeModel, or %NULL if none is currently being used.
11309  **/
11310 GtkTreeModel *
11311 gtk_tree_view_get_model (GtkTreeView *tree_view)
11312 {
11313   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), NULL);
11314
11315   return tree_view->priv->model;
11316 }
11317
11318 /**
11319  * gtk_tree_view_set_model:
11320  * @tree_view: A #GtkTreeNode.
11321  * @model: (allow-none): The model.
11322  *
11323  * Sets the model for a #GtkTreeView.  If the @tree_view already has a model
11324  * set, it will remove it before setting the new model.  If @model is %NULL,
11325  * then it will unset the old model.
11326  **/
11327 void
11328 gtk_tree_view_set_model (GtkTreeView  *tree_view,
11329                          GtkTreeModel *model)
11330 {
11331   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
11332   g_return_if_fail (model == NULL || GTK_IS_TREE_MODEL (model));
11333
11334   if (model == tree_view->priv->model)
11335     return;
11336
11337   if (tree_view->priv->scroll_to_path)
11338     {
11339       gtk_tree_row_reference_free (tree_view->priv->scroll_to_path);
11340       tree_view->priv->scroll_to_path = NULL;
11341     }
11342
11343   if (tree_view->priv->rubber_band_status)
11344     gtk_tree_view_stop_rubber_band (tree_view);
11345
11346   if (tree_view->priv->model)
11347     {
11348       GList *tmplist = tree_view->priv->columns;
11349       GtkStyleContext *context;
11350
11351       gtk_tree_view_unref_and_check_selection_tree (tree_view, tree_view->priv->tree);
11352       gtk_tree_view_stop_editing (tree_view, TRUE);
11353
11354       context = gtk_widget_get_style_context (GTK_WIDGET (tree_view));
11355       gtk_style_context_cancel_animations (context, NULL);
11356
11357       g_signal_handlers_disconnect_by_func (tree_view->priv->model,
11358                                             gtk_tree_view_row_changed,
11359                                             tree_view);
11360       g_signal_handlers_disconnect_by_func (tree_view->priv->model,
11361                                             gtk_tree_view_row_inserted,
11362                                             tree_view);
11363       g_signal_handlers_disconnect_by_func (tree_view->priv->model,
11364                                             gtk_tree_view_row_has_child_toggled,
11365                                             tree_view);
11366       g_signal_handlers_disconnect_by_func (tree_view->priv->model,
11367                                             gtk_tree_view_row_deleted,
11368                                             tree_view);
11369       g_signal_handlers_disconnect_by_func (tree_view->priv->model,
11370                                             gtk_tree_view_rows_reordered,
11371                                             tree_view);
11372
11373       for (; tmplist; tmplist = tmplist->next)
11374         _gtk_tree_view_column_unset_model (tmplist->data,
11375                                            tree_view->priv->model);
11376
11377       if (tree_view->priv->tree)
11378         gtk_tree_view_free_rbtree (tree_view);
11379
11380       gtk_tree_row_reference_free (tree_view->priv->drag_dest_row);
11381       tree_view->priv->drag_dest_row = NULL;
11382       tree_view->priv->cursor_tree = NULL;
11383       tree_view->priv->cursor_node = NULL;
11384       gtk_tree_row_reference_free (tree_view->priv->anchor);
11385       tree_view->priv->anchor = NULL;
11386       gtk_tree_row_reference_free (tree_view->priv->top_row);
11387       tree_view->priv->top_row = NULL;
11388       gtk_tree_row_reference_free (tree_view->priv->scroll_to_path);
11389       tree_view->priv->scroll_to_path = NULL;
11390
11391       tree_view->priv->scroll_to_column = NULL;
11392
11393       g_object_unref (tree_view->priv->model);
11394
11395       tree_view->priv->search_column = -1;
11396       tree_view->priv->fixed_height_check = 0;
11397       tree_view->priv->fixed_height = -1;
11398       tree_view->priv->dy = tree_view->priv->top_row_dy = 0;
11399       tree_view->priv->last_button_x = -1;
11400       tree_view->priv->last_button_y = -1;
11401     }
11402
11403   tree_view->priv->model = model;
11404
11405   if (tree_view->priv->model)
11406     {
11407       gint i;
11408       GtkTreePath *path;
11409       GtkTreeIter iter;
11410       GtkTreeModelFlags flags;
11411
11412       if (tree_view->priv->search_column == -1)
11413         {
11414           for (i = 0; i < gtk_tree_model_get_n_columns (model); i++)
11415             {
11416               GType type = gtk_tree_model_get_column_type (model, i);
11417
11418               if (g_value_type_transformable (type, G_TYPE_STRING))
11419                 {
11420                   tree_view->priv->search_column = i;
11421                   break;
11422                 }
11423             }
11424         }
11425
11426       g_object_ref (tree_view->priv->model);
11427       g_signal_connect (tree_view->priv->model,
11428                         "row-changed",
11429                         G_CALLBACK (gtk_tree_view_row_changed),
11430                         tree_view);
11431       g_signal_connect (tree_view->priv->model,
11432                         "row-inserted",
11433                         G_CALLBACK (gtk_tree_view_row_inserted),
11434                         tree_view);
11435       g_signal_connect (tree_view->priv->model,
11436                         "row-has-child-toggled",
11437                         G_CALLBACK (gtk_tree_view_row_has_child_toggled),
11438                         tree_view);
11439       g_signal_connect (tree_view->priv->model,
11440                         "row-deleted",
11441                         G_CALLBACK (gtk_tree_view_row_deleted),
11442                         tree_view);
11443       g_signal_connect (tree_view->priv->model,
11444                         "rows-reordered",
11445                         G_CALLBACK (gtk_tree_view_rows_reordered),
11446                         tree_view);
11447
11448       flags = gtk_tree_model_get_flags (tree_view->priv->model);
11449       if ((flags & GTK_TREE_MODEL_LIST_ONLY) == GTK_TREE_MODEL_LIST_ONLY)
11450         tree_view->priv->is_list = TRUE;
11451       else
11452         tree_view->priv->is_list = FALSE;
11453
11454       path = gtk_tree_path_new_first ();
11455       if (gtk_tree_model_get_iter (tree_view->priv->model, &iter, path))
11456         {
11457           tree_view->priv->tree = _gtk_rbtree_new ();
11458           gtk_tree_view_build_tree (tree_view, tree_view->priv->tree, &iter, 1, FALSE);
11459         }
11460       gtk_tree_path_free (path);
11461
11462       /*  FIXME: do I need to do this? gtk_tree_view_create_buttons (tree_view); */
11463       install_presize_handler (tree_view);
11464     }
11465
11466   g_object_notify (G_OBJECT (tree_view), "model");
11467
11468   if (tree_view->priv->selection)
11469   _gtk_tree_selection_emit_changed (tree_view->priv->selection);
11470
11471   if (gtk_widget_get_realized (GTK_WIDGET (tree_view)))
11472     gtk_widget_queue_resize (GTK_WIDGET (tree_view));
11473 }
11474
11475 /**
11476  * gtk_tree_view_get_selection:
11477  * @tree_view: A #GtkTreeView.
11478  *
11479  * Gets the #GtkTreeSelection associated with @tree_view.
11480  *
11481  * Return value: (transfer none): A #GtkTreeSelection object.
11482  **/
11483 GtkTreeSelection *
11484 gtk_tree_view_get_selection (GtkTreeView *tree_view)
11485 {
11486   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), NULL);
11487
11488   return tree_view->priv->selection;
11489 }
11490
11491 /**
11492  * gtk_tree_view_get_hadjustment:
11493  * @tree_view: A #GtkTreeView
11494  *
11495  * Gets the #GtkAdjustment currently being used for the horizontal aspect.
11496  *
11497  * Return value: (transfer none): A #GtkAdjustment object, or %NULL
11498  *     if none is currently being used.
11499  *
11500  * Deprecated: 3.0: Use gtk_scrollable_get_hadjustment()
11501  **/
11502 GtkAdjustment *
11503 gtk_tree_view_get_hadjustment (GtkTreeView *tree_view)
11504 {
11505   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), NULL);
11506
11507   return gtk_tree_view_do_get_hadjustment (tree_view);
11508 }
11509
11510 static GtkAdjustment *
11511 gtk_tree_view_do_get_hadjustment (GtkTreeView *tree_view)
11512 {
11513   return tree_view->priv->hadjustment;
11514 }
11515
11516 /**
11517  * gtk_tree_view_set_hadjustment:
11518  * @tree_view: A #GtkTreeView
11519  * @adjustment: (allow-none): The #GtkAdjustment to set, or %NULL
11520  *
11521  * Sets the #GtkAdjustment for the current horizontal aspect.
11522  *
11523  * Deprecated: 3.0: Use gtk_scrollable_set_hadjustment()
11524  **/
11525 void
11526 gtk_tree_view_set_hadjustment (GtkTreeView   *tree_view,
11527                                GtkAdjustment *adjustment)
11528 {
11529   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
11530   g_return_if_fail (adjustment == NULL || GTK_IS_ADJUSTMENT (adjustment));
11531
11532   gtk_tree_view_do_set_hadjustment (tree_view, adjustment);
11533 }
11534
11535 static void
11536 gtk_tree_view_do_set_hadjustment (GtkTreeView   *tree_view,
11537                                   GtkAdjustment *adjustment)
11538 {
11539   GtkTreeViewPrivate *priv = tree_view->priv;
11540
11541   if (adjustment && priv->hadjustment == adjustment)
11542     return;
11543
11544   if (priv->hadjustment != NULL)
11545     {
11546       g_signal_handlers_disconnect_by_func (priv->hadjustment,
11547                                             gtk_tree_view_adjustment_changed,
11548                                             tree_view);
11549       g_object_unref (priv->hadjustment);
11550     }
11551
11552   if (adjustment == NULL)
11553     adjustment = gtk_adjustment_new (0.0, 0.0, 0.0,
11554                                      0.0, 0.0, 0.0);
11555
11556   g_signal_connect (adjustment, "value-changed",
11557                     G_CALLBACK (gtk_tree_view_adjustment_changed), tree_view);
11558   priv->hadjustment = g_object_ref_sink (adjustment);
11559   /* FIXME: Adjustment should probably be populated here with fresh values, but
11560    * internal details are too complicated for me to decipher right now.
11561    */
11562   gtk_tree_view_adjustment_changed (NULL, tree_view);
11563
11564   g_object_notify (G_OBJECT (tree_view), "hadjustment");
11565 }
11566
11567 /**
11568  * gtk_tree_view_get_vadjustment:
11569  * @tree_view: A #GtkTreeView
11570  *
11571  * Gets the #GtkAdjustment currently being used for the vertical aspect.
11572  *
11573  * Return value: (transfer none): A #GtkAdjustment object, or %NULL
11574  *     if none is currently being used.
11575  *
11576  * Deprecated: 3.0: Use gtk_scrollable_get_vadjustment()
11577  **/
11578 GtkAdjustment *
11579 gtk_tree_view_get_vadjustment (GtkTreeView *tree_view)
11580 {
11581   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), NULL);
11582
11583   return gtk_tree_view_do_get_vadjustment (tree_view);
11584 }
11585
11586 static GtkAdjustment *
11587 gtk_tree_view_do_get_vadjustment (GtkTreeView *tree_view)
11588 {
11589   return tree_view->priv->vadjustment;
11590 }
11591
11592 /**
11593  * gtk_tree_view_set_vadjustment:
11594  * @tree_view: A #GtkTreeView
11595  * @adjustment: (allow-none): The #GtkAdjustment to set, or %NULL
11596  *
11597  * Sets the #GtkAdjustment for the current vertical aspect.
11598  *
11599  * Deprecated: 3.0: Use gtk_scrollable_set_vadjustment()
11600  **/
11601 void
11602 gtk_tree_view_set_vadjustment (GtkTreeView   *tree_view,
11603                                GtkAdjustment *adjustment)
11604 {
11605   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
11606   g_return_if_fail (adjustment == NULL || GTK_IS_ADJUSTMENT (adjustment));
11607
11608   gtk_tree_view_do_set_vadjustment (tree_view, adjustment);
11609 }
11610
11611 static void
11612 gtk_tree_view_do_set_vadjustment (GtkTreeView   *tree_view,
11613                                   GtkAdjustment *adjustment)
11614 {
11615   GtkTreeViewPrivate *priv = tree_view->priv;
11616
11617   if (adjustment && priv->vadjustment == adjustment)
11618     return;
11619
11620   if (priv->vadjustment != NULL)
11621     {
11622       g_signal_handlers_disconnect_by_func (priv->vadjustment,
11623                                             gtk_tree_view_adjustment_changed,
11624                                             tree_view);
11625       g_object_unref (priv->vadjustment);
11626     }
11627
11628   if (adjustment == NULL)
11629     adjustment = gtk_adjustment_new (0.0, 0.0, 0.0,
11630                                      0.0, 0.0, 0.0);
11631
11632   g_signal_connect (adjustment, "value-changed",
11633                     G_CALLBACK (gtk_tree_view_adjustment_changed), tree_view);
11634   priv->vadjustment = g_object_ref_sink (adjustment);
11635   /* FIXME: Adjustment should probably be populated here with fresh values, but
11636    * internal details are too complicated for me to decipher right now.
11637    */
11638   gtk_tree_view_adjustment_changed (NULL, tree_view);
11639   g_object_notify (G_OBJECT (tree_view), "vadjustment");
11640 }
11641
11642 /* Column and header operations */
11643
11644 /**
11645  * gtk_tree_view_get_headers_visible:
11646  * @tree_view: A #GtkTreeView.
11647  *
11648  * Returns %TRUE if the headers on the @tree_view are visible.
11649  *
11650  * Return value: Whether the headers are visible or not.
11651  **/
11652 gboolean
11653 gtk_tree_view_get_headers_visible (GtkTreeView *tree_view)
11654 {
11655   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), FALSE);
11656
11657   return tree_view->priv->headers_visible;
11658 }
11659
11660 /**
11661  * gtk_tree_view_set_headers_visible:
11662  * @tree_view: A #GtkTreeView.
11663  * @headers_visible: %TRUE if the headers are visible
11664  *
11665  * Sets the visibility state of the headers.
11666  **/
11667 void
11668 gtk_tree_view_set_headers_visible (GtkTreeView *tree_view,
11669                                    gboolean     headers_visible)
11670 {
11671   gint x, y;
11672   GList *list;
11673   GtkTreeViewColumn *column;
11674   GtkAllocation allocation;
11675   GtkWidget *button;
11676
11677   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
11678
11679   headers_visible = !! headers_visible;
11680
11681   if (tree_view->priv->headers_visible == headers_visible)
11682     return;
11683
11684   tree_view->priv->headers_visible = headers_visible == TRUE;
11685
11686   if (gtk_widget_get_realized (GTK_WIDGET (tree_view)))
11687     {
11688       gdk_window_get_position (tree_view->priv->bin_window, &x, &y);
11689       if (headers_visible)
11690         {
11691           gtk_widget_get_allocation (GTK_WIDGET (tree_view), &allocation);
11692           gdk_window_move_resize (tree_view->priv->bin_window,
11693                                   x, y  + gtk_tree_view_get_effective_header_height (tree_view),
11694                                   tree_view->priv->width, allocation.height -  + gtk_tree_view_get_effective_header_height (tree_view));
11695
11696           if (gtk_widget_get_mapped (GTK_WIDGET (tree_view)))
11697             gtk_tree_view_map_buttons (tree_view);
11698         }
11699       else
11700         {
11701           gdk_window_move_resize (tree_view->priv->bin_window, x, y, tree_view->priv->width, tree_view->priv->height);
11702
11703           for (list = tree_view->priv->columns; list; list = list->next)
11704             {
11705               column = list->data;
11706               button = gtk_tree_view_column_get_button (column);
11707
11708               gtk_widget_hide (button);
11709               gtk_widget_unmap (button);
11710             }
11711           gdk_window_hide (tree_view->priv->header_window);
11712         }
11713     }
11714
11715   gtk_widget_get_allocation (GTK_WIDGET (tree_view), &allocation);
11716   gtk_adjustment_configure (tree_view->priv->vadjustment,
11717                             gtk_adjustment_get_value (tree_view->priv->vadjustment),
11718                             0,
11719                             tree_view->priv->height,
11720                             gtk_adjustment_get_step_increment (tree_view->priv->vadjustment),
11721                             (allocation.height - gtk_tree_view_get_effective_header_height (tree_view)) / 2,
11722                             allocation.height - gtk_tree_view_get_effective_header_height (tree_view));
11723
11724   gtk_widget_queue_resize (GTK_WIDGET (tree_view));
11725
11726   g_object_notify (G_OBJECT (tree_view), "headers-visible");
11727 }
11728
11729 /**
11730  * gtk_tree_view_columns_autosize:
11731  * @tree_view: A #GtkTreeView.
11732  *
11733  * Resizes all columns to their optimal width. Only works after the
11734  * treeview has been realized.
11735  **/
11736 void
11737 gtk_tree_view_columns_autosize (GtkTreeView *tree_view)
11738 {
11739   gboolean dirty = FALSE;
11740   GList *list;
11741   GtkTreeViewColumn *column;
11742
11743   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
11744
11745   for (list = tree_view->priv->columns; list; list = list->next)
11746     {
11747       column = list->data;
11748       if (gtk_tree_view_column_get_sizing (column) == GTK_TREE_VIEW_COLUMN_AUTOSIZE)
11749         continue;
11750       _gtk_tree_view_column_cell_set_dirty (column, TRUE);
11751       dirty = TRUE;
11752     }
11753
11754   if (dirty)
11755     gtk_widget_queue_resize (GTK_WIDGET (tree_view));
11756 }
11757
11758 /**
11759  * gtk_tree_view_set_headers_clickable:
11760  * @tree_view: A #GtkTreeView.
11761  * @setting: %TRUE if the columns are clickable.
11762  *
11763  * Allow the column title buttons to be clicked.
11764  **/
11765 void
11766 gtk_tree_view_set_headers_clickable (GtkTreeView *tree_view,
11767                                      gboolean   setting)
11768 {
11769   GList *list;
11770
11771   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
11772
11773   for (list = tree_view->priv->columns; list; list = list->next)
11774     gtk_tree_view_column_set_clickable (GTK_TREE_VIEW_COLUMN (list->data), setting);
11775
11776   g_object_notify (G_OBJECT (tree_view), "headers-clickable");
11777 }
11778
11779
11780 /**
11781  * gtk_tree_view_get_headers_clickable:
11782  * @tree_view: A #GtkTreeView.
11783  *
11784  * Returns whether all header columns are clickable.
11785  *
11786  * Return value: %TRUE if all header columns are clickable, otherwise %FALSE
11787  *
11788  * Since: 2.10
11789  **/
11790 gboolean
11791 gtk_tree_view_get_headers_clickable (GtkTreeView *tree_view)
11792 {
11793   GList *list;
11794
11795   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), FALSE);
11796
11797   for (list = tree_view->priv->columns; list; list = list->next)
11798     if (!gtk_tree_view_column_get_clickable (GTK_TREE_VIEW_COLUMN (list->data)))
11799       return FALSE;
11800
11801   return TRUE;
11802 }
11803
11804 /**
11805  * gtk_tree_view_set_rules_hint
11806  * @tree_view: a #GtkTreeView
11807  * @setting: %TRUE if the tree requires reading across rows
11808  *
11809  * This function tells GTK+ that the user interface for your
11810  * application requires users to read across tree rows and associate
11811  * cells with one another. By default, GTK+ will then render the tree
11812  * with alternating row colors. Do <emphasis>not</emphasis> use it
11813  * just because you prefer the appearance of the ruled tree; that's a
11814  * question for the theme. Some themes will draw tree rows in
11815  * alternating colors even when rules are turned off, and users who
11816  * prefer that appearance all the time can choose those themes. You
11817  * should call this function only as a <emphasis>semantic</emphasis>
11818  * hint to the theme engine that your tree makes alternating colors
11819  * useful from a functional standpoint (since it has lots of columns,
11820  * generally).
11821  *
11822  **/
11823 void
11824 gtk_tree_view_set_rules_hint (GtkTreeView  *tree_view,
11825                               gboolean      setting)
11826 {
11827   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
11828
11829   setting = setting != FALSE;
11830
11831   if (tree_view->priv->has_rules != setting)
11832     {
11833       tree_view->priv->has_rules = setting;
11834       gtk_widget_queue_draw (GTK_WIDGET (tree_view));
11835     }
11836
11837   g_object_notify (G_OBJECT (tree_view), "rules-hint");
11838 }
11839
11840 /**
11841  * gtk_tree_view_get_rules_hint
11842  * @tree_view: a #GtkTreeView
11843  *
11844  * Gets the setting set by gtk_tree_view_set_rules_hint().
11845  *
11846  * Return value: %TRUE if rules are useful for the user of this tree
11847  **/
11848 gboolean
11849 gtk_tree_view_get_rules_hint (GtkTreeView  *tree_view)
11850 {
11851   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), FALSE);
11852
11853   return tree_view->priv->has_rules;
11854 }
11855
11856 /* Public Column functions
11857  */
11858
11859 /**
11860  * gtk_tree_view_append_column:
11861  * @tree_view: A #GtkTreeView.
11862  * @column: The #GtkTreeViewColumn to add.
11863  *
11864  * Appends @column to the list of columns. If @tree_view has "fixed_height"
11865  * mode enabled, then @column must have its "sizing" property set to be
11866  * GTK_TREE_VIEW_COLUMN_FIXED.
11867  *
11868  * Return value: The number of columns in @tree_view after appending.
11869  **/
11870 gint
11871 gtk_tree_view_append_column (GtkTreeView       *tree_view,
11872                              GtkTreeViewColumn *column)
11873 {
11874   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), -1);
11875   g_return_val_if_fail (GTK_IS_TREE_VIEW_COLUMN (column), -1);
11876   g_return_val_if_fail (gtk_tree_view_column_get_tree_view (column) == NULL, -1);
11877
11878   return gtk_tree_view_insert_column (tree_view, column, -1);
11879 }
11880
11881 void
11882 _gtk_tree_view_reset_header_styles (GtkTreeView *tree_view)
11883 {
11884   GList *columns;
11885
11886   for (columns = tree_view->priv->columns; columns; columns = columns->next)
11887     {
11888       GtkTreeViewColumn *column = columns->data;
11889       GtkWidget *header_widget;
11890
11891       if (gtk_tree_view_column_get_visible (column))
11892         continue;
11893
11894       header_widget = gtk_tree_view_column_get_widget (column);
11895
11896       if (!header_widget)
11897         header_widget = gtk_tree_view_column_get_button (column);
11898
11899       gtk_widget_reset_style (header_widget);
11900     }
11901 }
11902
11903
11904 /**
11905  * gtk_tree_view_remove_column:
11906  * @tree_view: A #GtkTreeView.
11907  * @column: The #GtkTreeViewColumn to remove.
11908  *
11909  * Removes @column from @tree_view.
11910  *
11911  * Return value: The number of columns in @tree_view after removing.
11912  **/
11913 gint
11914 gtk_tree_view_remove_column (GtkTreeView       *tree_view,
11915                              GtkTreeViewColumn *column)
11916 {
11917   guint position;
11918
11919   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), -1);
11920   g_return_val_if_fail (GTK_IS_TREE_VIEW_COLUMN (column), -1);
11921   g_return_val_if_fail (gtk_tree_view_column_get_tree_view (column) == GTK_WIDGET (tree_view), -1);
11922
11923   if (tree_view->priv->focus_column == column)
11924     tree_view->priv->focus_column = NULL;
11925
11926   if (tree_view->priv->edited_column == column)
11927     {
11928       gtk_tree_view_stop_editing (tree_view, TRUE);
11929
11930       /* no need to, but just to be sure ... */
11931       tree_view->priv->edited_column = NULL;
11932     }
11933
11934   if (tree_view->priv->expander_column == column)
11935     tree_view->priv->expander_column = NULL;
11936
11937   g_signal_handlers_disconnect_by_func (column,
11938                                         G_CALLBACK (column_sizing_notify),
11939                                         tree_view);
11940
11941   _gtk_tree_view_column_unset_tree_view (column);
11942
11943   position = g_list_index (tree_view->priv->columns, column);
11944
11945   tree_view->priv->columns = g_list_remove (tree_view->priv->columns, column);
11946   tree_view->priv->n_columns--;
11947
11948   if (gtk_widget_get_realized (GTK_WIDGET (tree_view)))
11949     {
11950       GList *list;
11951
11952       _gtk_tree_view_column_unrealize_button (column);
11953       for (list = tree_view->priv->columns; list; list = list->next)
11954         {
11955           GtkTreeViewColumn *tmp_column;
11956
11957           tmp_column = GTK_TREE_VIEW_COLUMN (list->data);
11958           if (gtk_tree_view_column_get_visible (tmp_column))
11959             _gtk_tree_view_column_cell_set_dirty (tmp_column, TRUE);
11960         }
11961
11962       if (tree_view->priv->n_columns == 0 &&
11963           gtk_tree_view_get_headers_visible (tree_view))
11964         gdk_window_hide (tree_view->priv->header_window);
11965
11966       gtk_widget_queue_resize (GTK_WIDGET (tree_view));
11967     }
11968
11969   _gtk_tree_view_reset_header_styles (tree_view);
11970
11971   _gtk_tree_view_accessible_remove_column (tree_view, column, position);
11972
11973   g_object_unref (column);
11974   g_signal_emit (tree_view, tree_view_signals[COLUMNS_CHANGED], 0);
11975
11976   return tree_view->priv->n_columns;
11977 }
11978
11979 /**
11980  * gtk_tree_view_insert_column:
11981  * @tree_view: A #GtkTreeView.
11982  * @column: The #GtkTreeViewColumn to be inserted.
11983  * @position: The position to insert @column in.
11984  *
11985  * This inserts the @column into the @tree_view at @position.  If @position is
11986  * -1, then the column is inserted at the end. If @tree_view has
11987  * "fixed_height" mode enabled, then @column must have its "sizing" property
11988  * set to be GTK_TREE_VIEW_COLUMN_FIXED.
11989  *
11990  * Return value: The number of columns in @tree_view after insertion.
11991  **/
11992 gint
11993 gtk_tree_view_insert_column (GtkTreeView       *tree_view,
11994                              GtkTreeViewColumn *column,
11995                              gint               position)
11996 {
11997   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), -1);
11998   g_return_val_if_fail (GTK_IS_TREE_VIEW_COLUMN (column), -1);
11999   g_return_val_if_fail (gtk_tree_view_column_get_tree_view (column) == NULL, -1);
12000
12001   if (tree_view->priv->fixed_height_mode)
12002     g_return_val_if_fail (gtk_tree_view_column_get_sizing (column)
12003                           == GTK_TREE_VIEW_COLUMN_FIXED, -1);
12004
12005   if (position < 0 || position > tree_view->priv->n_columns)
12006     position = tree_view->priv->n_columns;
12007
12008   g_object_ref_sink (column);
12009
12010   if (tree_view->priv->n_columns == 0 &&
12011       gtk_widget_get_realized (GTK_WIDGET (tree_view)) &&
12012       gtk_tree_view_get_headers_visible (tree_view))
12013     {
12014       gdk_window_show (tree_view->priv->header_window);
12015     }
12016
12017   g_signal_connect (column, "notify::sizing",
12018                     G_CALLBACK (column_sizing_notify), tree_view);
12019
12020   tree_view->priv->columns = g_list_insert (tree_view->priv->columns,
12021                                             column, position);
12022   tree_view->priv->n_columns++;
12023
12024   _gtk_tree_view_column_set_tree_view (column, tree_view);
12025
12026   if (gtk_widget_get_realized (GTK_WIDGET (tree_view)))
12027     {
12028       GList *list;
12029
12030       _gtk_tree_view_column_realize_button (column);
12031
12032       for (list = tree_view->priv->columns; list; list = list->next)
12033         {
12034           column = GTK_TREE_VIEW_COLUMN (list->data);
12035           if (gtk_tree_view_column_get_visible (column))
12036             _gtk_tree_view_column_cell_set_dirty (column, TRUE);
12037         }
12038       gtk_widget_queue_resize (GTK_WIDGET (tree_view));
12039     }
12040
12041   _gtk_tree_view_reset_header_styles (tree_view);
12042
12043   _gtk_tree_view_accessible_add_column (tree_view, column, position);
12044
12045   g_signal_emit (tree_view, tree_view_signals[COLUMNS_CHANGED], 0);
12046
12047   return tree_view->priv->n_columns;
12048 }
12049
12050 /**
12051  * gtk_tree_view_insert_column_with_attributes:
12052  * @tree_view: A #GtkTreeView
12053  * @position: The position to insert the new column in
12054  * @title: The title to set the header to
12055  * @cell: The #GtkCellRenderer
12056  * @...: A %NULL-terminated list of attributes
12057  *
12058  * Creates a new #GtkTreeViewColumn and inserts it into the @tree_view at
12059  * @position.  If @position is -1, then the newly created column is inserted at
12060  * the end.  The column is initialized with the attributes given. If @tree_view
12061  * has "fixed_height" mode enabled, then the new column will have its sizing
12062  * property set to be GTK_TREE_VIEW_COLUMN_FIXED.
12063  *
12064  * Return value: The number of columns in @tree_view after insertion.
12065  **/
12066 gint
12067 gtk_tree_view_insert_column_with_attributes (GtkTreeView     *tree_view,
12068                                              gint             position,
12069                                              const gchar     *title,
12070                                              GtkCellRenderer *cell,
12071                                              ...)
12072 {
12073   GtkTreeViewColumn *column;
12074   gchar *attribute;
12075   va_list args;
12076   gint column_id;
12077
12078   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), -1);
12079
12080   column = gtk_tree_view_column_new ();
12081   if (tree_view->priv->fixed_height_mode)
12082     gtk_tree_view_column_set_sizing (column, GTK_TREE_VIEW_COLUMN_FIXED);
12083
12084   gtk_tree_view_column_set_title (column, title);
12085   gtk_tree_view_column_pack_start (column, cell, TRUE);
12086
12087   va_start (args, cell);
12088
12089   attribute = va_arg (args, gchar *);
12090
12091   while (attribute != NULL)
12092     {
12093       column_id = va_arg (args, gint);
12094       gtk_tree_view_column_add_attribute (column, cell, attribute, column_id);
12095       attribute = va_arg (args, gchar *);
12096     }
12097
12098   va_end (args);
12099
12100   return gtk_tree_view_insert_column (tree_view, column, position);
12101 }
12102
12103 /**
12104  * gtk_tree_view_insert_column_with_data_func:
12105  * @tree_view: a #GtkTreeView
12106  * @position: Position to insert, -1 for append
12107  * @title: column title
12108  * @cell: cell renderer for column
12109  * @func: function to set attributes of cell renderer
12110  * @data: data for @func
12111  * @dnotify: destroy notifier for @data
12112  *
12113  * Convenience function that inserts a new column into the #GtkTreeView
12114  * with the given cell renderer and a #GtkCellDataFunc to set cell renderer
12115  * attributes (normally using data from the model). See also
12116  * gtk_tree_view_column_set_cell_data_func(), gtk_tree_view_column_pack_start().
12117  * If @tree_view has "fixed_height" mode enabled, then the new column will have its
12118  * "sizing" property set to be GTK_TREE_VIEW_COLUMN_FIXED.
12119  *
12120  * Return value: number of columns in the tree view post-insert
12121  **/
12122 gint
12123 gtk_tree_view_insert_column_with_data_func  (GtkTreeView               *tree_view,
12124                                              gint                       position,
12125                                              const gchar               *title,
12126                                              GtkCellRenderer           *cell,
12127                                              GtkTreeCellDataFunc        func,
12128                                              gpointer                   data,
12129                                              GDestroyNotify             dnotify)
12130 {
12131   GtkTreeViewColumn *column;
12132
12133   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), -1);
12134
12135   column = gtk_tree_view_column_new ();
12136   if (tree_view->priv->fixed_height_mode)
12137     gtk_tree_view_column_set_sizing (column, GTK_TREE_VIEW_COLUMN_FIXED);
12138
12139   gtk_tree_view_column_set_title (column, title);
12140   gtk_tree_view_column_pack_start (column, cell, TRUE);
12141   gtk_tree_view_column_set_cell_data_func (column, cell, func, data, dnotify);
12142
12143   return gtk_tree_view_insert_column (tree_view, column, position);
12144 }
12145
12146 /**
12147  * gtk_tree_view_get_n_columns:
12148  * @tree_view: a #GtkTreeView
12149  *
12150  * Queries the number of columns in the given @tree_view.
12151  *
12152  * Returns: The number of columns in the @tree_view
12153  *
12154  * Since: 3.4
12155  **/
12156 guint
12157 gtk_tree_view_get_n_columns (GtkTreeView *tree_view)
12158 {
12159   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), 0);
12160
12161   return tree_view->priv->n_columns;
12162 }
12163
12164 /**
12165  * gtk_tree_view_get_column:
12166  * @tree_view: A #GtkTreeView.
12167  * @n: The position of the column, counting from 0.
12168  *
12169  * Gets the #GtkTreeViewColumn at the given position in the #tree_view.
12170  *
12171  * Return value: (transfer none): The #GtkTreeViewColumn, or %NULL if the
12172  *     position is outside the range of columns.
12173  **/
12174 GtkTreeViewColumn *
12175 gtk_tree_view_get_column (GtkTreeView *tree_view,
12176                           gint         n)
12177 {
12178   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), NULL);
12179
12180   if (n < 0 || n >= tree_view->priv->n_columns)
12181     return NULL;
12182
12183   if (tree_view->priv->columns == NULL)
12184     return NULL;
12185
12186   return GTK_TREE_VIEW_COLUMN (g_list_nth (tree_view->priv->columns, n)->data);
12187 }
12188
12189 /**
12190  * gtk_tree_view_get_columns:
12191  * @tree_view: A #GtkTreeView
12192  *
12193  * Returns a #GList of all the #GtkTreeViewColumn s currently in @tree_view.
12194  * The returned list must be freed with g_list_free ().
12195  *
12196  * Return value: (element-type GtkTreeViewColumn) (transfer container): A list of #GtkTreeViewColumn s
12197  **/
12198 GList *
12199 gtk_tree_view_get_columns (GtkTreeView *tree_view)
12200 {
12201   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), NULL);
12202
12203   return g_list_copy (tree_view->priv->columns);
12204 }
12205
12206 /**
12207  * gtk_tree_view_move_column_after:
12208  * @tree_view: A #GtkTreeView
12209  * @column: The #GtkTreeViewColumn to be moved.
12210  * @base_column: (allow-none): The #GtkTreeViewColumn to be moved relative to, or %NULL.
12211  *
12212  * Moves @column to be after to @base_column.  If @base_column is %NULL, then
12213  * @column is placed in the first position.
12214  **/
12215 void
12216 gtk_tree_view_move_column_after (GtkTreeView       *tree_view,
12217                                  GtkTreeViewColumn *column,
12218                                  GtkTreeViewColumn *base_column)
12219 {
12220   GList *column_list_el, *base_el = NULL;
12221
12222   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
12223
12224   column_list_el = g_list_find (tree_view->priv->columns, column);
12225   g_return_if_fail (column_list_el != NULL);
12226
12227   if (base_column)
12228     {
12229       base_el = g_list_find (tree_view->priv->columns, base_column);
12230       g_return_if_fail (base_el != NULL);
12231     }
12232
12233   if (column_list_el->prev == base_el)
12234     return;
12235
12236   tree_view->priv->columns = g_list_remove_link (tree_view->priv->columns, column_list_el);
12237   if (base_el == NULL)
12238     {
12239       column_list_el->prev = NULL;
12240       column_list_el->next = tree_view->priv->columns;
12241       if (column_list_el->next)
12242         column_list_el->next->prev = column_list_el;
12243       tree_view->priv->columns = column_list_el;
12244     }
12245   else
12246     {
12247       column_list_el->prev = base_el;
12248       column_list_el->next = base_el->next;
12249       if (column_list_el->next)
12250         column_list_el->next->prev = column_list_el;
12251       base_el->next = column_list_el;
12252     }
12253
12254   if (gtk_widget_get_realized (GTK_WIDGET (tree_view)))
12255     {
12256       gtk_widget_queue_resize (GTK_WIDGET (tree_view));
12257       gtk_tree_view_size_allocate_columns (GTK_WIDGET (tree_view), NULL);
12258     }
12259
12260   _gtk_tree_view_reset_header_styles (tree_view);
12261
12262   _gtk_tree_view_accessible_reorder_column (tree_view, column);
12263
12264   g_signal_emit (tree_view, tree_view_signals[COLUMNS_CHANGED], 0);
12265 }
12266
12267 /**
12268  * gtk_tree_view_set_expander_column:
12269  * @tree_view: A #GtkTreeView
12270  * @column: %NULL, or the column to draw the expander arrow at.
12271  *
12272  * Sets the column to draw the expander arrow at. It must be in @tree_view.
12273  * If @column is %NULL, then the expander arrow is always at the first
12274  * visible column.
12275  *
12276  * If you do not want expander arrow to appear in your tree, set the
12277  * expander column to a hidden column.
12278  **/
12279 void
12280 gtk_tree_view_set_expander_column (GtkTreeView       *tree_view,
12281                                    GtkTreeViewColumn *column)
12282 {
12283   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
12284   g_return_if_fail (column == NULL || GTK_IS_TREE_VIEW_COLUMN (column));
12285   g_return_if_fail (column == NULL || gtk_tree_view_column_get_tree_view (column) == GTK_WIDGET (tree_view));
12286
12287   if (tree_view->priv->expander_column != column)
12288     {
12289       tree_view->priv->expander_column = column;
12290       g_object_notify (G_OBJECT (tree_view), "expander-column");
12291     }
12292 }
12293
12294 /**
12295  * gtk_tree_view_get_expander_column:
12296  * @tree_view: A #GtkTreeView
12297  *
12298  * Returns the column that is the current expander column.
12299  * This column has the expander arrow drawn next to it.
12300  *
12301  * Return value: (transfer none): The expander column.
12302  **/
12303 GtkTreeViewColumn *
12304 gtk_tree_view_get_expander_column (GtkTreeView *tree_view)
12305 {
12306   GList *list;
12307
12308   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), NULL);
12309
12310   for (list = tree_view->priv->columns; list; list = list->next)
12311     if (gtk_tree_view_is_expander_column (tree_view, GTK_TREE_VIEW_COLUMN (list->data)))
12312       return (GtkTreeViewColumn *) list->data;
12313   return NULL;
12314 }
12315
12316
12317 /**
12318  * gtk_tree_view_set_column_drag_function:
12319  * @tree_view: A #GtkTreeView.
12320  * @func: (allow-none): A function to determine which columns are reorderable, or %NULL.
12321  * @user_data: (allow-none): User data to be passed to @func, or %NULL
12322  * @destroy: (allow-none): Destroy notifier for @user_data, or %NULL
12323  *
12324  * Sets a user function for determining where a column may be dropped when
12325  * dragged.  This function is called on every column pair in turn at the
12326  * beginning of a column drag to determine where a drop can take place.  The
12327  * arguments passed to @func are: the @tree_view, the #GtkTreeViewColumn being
12328  * dragged, the two #GtkTreeViewColumn s determining the drop spot, and
12329  * @user_data.  If either of the #GtkTreeViewColumn arguments for the drop spot
12330  * are %NULL, then they indicate an edge.  If @func is set to be %NULL, then
12331  * @tree_view reverts to the default behavior of allowing all columns to be
12332  * dropped everywhere.
12333  **/
12334 void
12335 gtk_tree_view_set_column_drag_function (GtkTreeView               *tree_view,
12336                                         GtkTreeViewColumnDropFunc  func,
12337                                         gpointer                   user_data,
12338                                         GDestroyNotify             destroy)
12339 {
12340   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
12341
12342   if (tree_view->priv->column_drop_func_data_destroy)
12343     tree_view->priv->column_drop_func_data_destroy (tree_view->priv->column_drop_func_data);
12344
12345   tree_view->priv->column_drop_func = func;
12346   tree_view->priv->column_drop_func_data = user_data;
12347   tree_view->priv->column_drop_func_data_destroy = destroy;
12348 }
12349
12350 /**
12351  * gtk_tree_view_scroll_to_point:
12352  * @tree_view: a #GtkTreeView
12353  * @tree_x: X coordinate of new top-left pixel of visible area, or -1
12354  * @tree_y: Y coordinate of new top-left pixel of visible area, or -1
12355  *
12356  * Scrolls the tree view such that the top-left corner of the visible
12357  * area is @tree_x, @tree_y, where @tree_x and @tree_y are specified
12358  * in tree coordinates.  The @tree_view must be realized before
12359  * this function is called.  If it isn't, you probably want to be
12360  * using gtk_tree_view_scroll_to_cell().
12361  *
12362  * If either @tree_x or @tree_y are -1, then that direction isn't scrolled.
12363  **/
12364 void
12365 gtk_tree_view_scroll_to_point (GtkTreeView *tree_view,
12366                                gint         tree_x,
12367                                gint         tree_y)
12368 {
12369   GtkAdjustment *hadj;
12370   GtkAdjustment *vadj;
12371
12372   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
12373   g_return_if_fail (gtk_widget_get_realized (GTK_WIDGET (tree_view)));
12374
12375   hadj = tree_view->priv->hadjustment;
12376   vadj = tree_view->priv->vadjustment;
12377
12378   if (tree_x != -1)
12379     gtk_adjustment_set_value (hadj, tree_x);
12380   if (tree_y != -1)
12381     gtk_adjustment_set_value (vadj, tree_y);
12382 }
12383
12384 /**
12385  * gtk_tree_view_scroll_to_cell:
12386  * @tree_view: A #GtkTreeView.
12387  * @path: (allow-none): The path of the row to move to, or %NULL.
12388  * @column: (allow-none): The #GtkTreeViewColumn to move horizontally to, or %NULL.
12389  * @use_align: whether to use alignment arguments, or %FALSE.
12390  * @row_align: The vertical alignment of the row specified by @path.
12391  * @col_align: The horizontal alignment of the column specified by @column.
12392  *
12393  * Moves the alignments of @tree_view to the position specified by @column and
12394  * @path.  If @column is %NULL, then no horizontal scrolling occurs.  Likewise,
12395  * if @path is %NULL no vertical scrolling occurs.  At a minimum, one of @column
12396  * or @path need to be non-%NULL.  @row_align determines where the row is
12397  * placed, and @col_align determines where @column is placed.  Both are expected
12398  * to be between 0.0 and 1.0. 0.0 means left/top alignment, 1.0 means
12399  * right/bottom alignment, 0.5 means center.
12400  *
12401  * If @use_align is %FALSE, then the alignment arguments are ignored, and the
12402  * tree does the minimum amount of work to scroll the cell onto the screen.
12403  * This means that the cell will be scrolled to the edge closest to its current
12404  * position.  If the cell is currently visible on the screen, nothing is done.
12405  *
12406  * This function only works if the model is set, and @path is a valid row on the
12407  * model.  If the model changes before the @tree_view is realized, the centered
12408  * path will be modified to reflect this change.
12409  **/
12410 void
12411 gtk_tree_view_scroll_to_cell (GtkTreeView       *tree_view,
12412                               GtkTreePath       *path,
12413                               GtkTreeViewColumn *column,
12414                               gboolean           use_align,
12415                               gfloat             row_align,
12416                               gfloat             col_align)
12417 {
12418   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
12419   g_return_if_fail (tree_view->priv->model != NULL);
12420   g_return_if_fail (tree_view->priv->tree != NULL);
12421   g_return_if_fail (row_align >= 0.0 && row_align <= 1.0);
12422   g_return_if_fail (col_align >= 0.0 && col_align <= 1.0);
12423   g_return_if_fail (path != NULL || column != NULL);
12424
12425 #if 0
12426   g_print ("gtk_tree_view_scroll_to_cell:\npath: %s\ncolumn: %s\nuse_align: %d\nrow_align: %f\ncol_align: %f\n",
12427            gtk_tree_path_to_string (path), column?"non-null":"null", use_align, row_align, col_align);
12428 #endif
12429   row_align = CLAMP (row_align, 0.0, 1.0);
12430   col_align = CLAMP (col_align, 0.0, 1.0);
12431
12432
12433   /* Note: Despite the benefits that come from having one code path for the
12434    * scrolling code, we short-circuit validate_visible_area's immplementation as
12435    * it is much slower than just going to the point.
12436    */
12437   if (!gtk_widget_get_visible (GTK_WIDGET (tree_view)) ||
12438       !gtk_widget_get_realized (GTK_WIDGET (tree_view)) ||
12439       _gtk_widget_get_alloc_needed (GTK_WIDGET (tree_view)) ||
12440       GTK_RBNODE_FLAG_SET (tree_view->priv->tree->root, GTK_RBNODE_DESCENDANTS_INVALID))
12441     {
12442       if (tree_view->priv->scroll_to_path)
12443         gtk_tree_row_reference_free (tree_view->priv->scroll_to_path);
12444
12445       tree_view->priv->scroll_to_path = NULL;
12446       tree_view->priv->scroll_to_column = NULL;
12447
12448       if (path)
12449         tree_view->priv->scroll_to_path = gtk_tree_row_reference_new_proxy (G_OBJECT (tree_view), tree_view->priv->model, path);
12450       if (column)
12451         tree_view->priv->scroll_to_column = column;
12452       tree_view->priv->scroll_to_use_align = use_align;
12453       tree_view->priv->scroll_to_row_align = row_align;
12454       tree_view->priv->scroll_to_col_align = col_align;
12455
12456       install_presize_handler (tree_view);
12457     }
12458   else
12459     {
12460       GdkRectangle cell_rect;
12461       GdkRectangle vis_rect;
12462       gint dest_x, dest_y;
12463
12464       gtk_tree_view_get_background_area (tree_view, path, column, &cell_rect);
12465       gtk_tree_view_get_visible_rect (tree_view, &vis_rect);
12466
12467       cell_rect.y = TREE_WINDOW_Y_TO_RBTREE_Y (tree_view, cell_rect.y);
12468
12469       dest_x = vis_rect.x;
12470       dest_y = vis_rect.y;
12471
12472       if (column)
12473         {
12474           if (use_align)
12475             {
12476               dest_x = cell_rect.x - ((vis_rect.width - cell_rect.width) * col_align);
12477             }
12478           else
12479             {
12480               if (cell_rect.x < vis_rect.x)
12481                 dest_x = cell_rect.x;
12482               if (cell_rect.x + cell_rect.width > vis_rect.x + vis_rect.width)
12483                 dest_x = cell_rect.x + cell_rect.width - vis_rect.width;
12484             }
12485         }
12486
12487       if (path)
12488         {
12489           if (use_align)
12490             {
12491               dest_y = cell_rect.y - ((vis_rect.height - cell_rect.height) * row_align);
12492               dest_y = MAX (dest_y, 0);
12493             }
12494           else
12495             {
12496               if (cell_rect.y < vis_rect.y)
12497                 dest_y = cell_rect.y;
12498               if (cell_rect.y + cell_rect.height > vis_rect.y + vis_rect.height)
12499                 dest_y = cell_rect.y + cell_rect.height - vis_rect.height;
12500             }
12501         }
12502
12503       gtk_tree_view_scroll_to_point (tree_view, dest_x, dest_y);
12504     }
12505 }
12506
12507 /**
12508  * gtk_tree_view_row_activated:
12509  * @tree_view: A #GtkTreeView
12510  * @path: The #GtkTreePath to be activated.
12511  * @column: The #GtkTreeViewColumn to be activated.
12512  *
12513  * Activates the cell determined by @path and @column.
12514  **/
12515 void
12516 gtk_tree_view_row_activated (GtkTreeView       *tree_view,
12517                              GtkTreePath       *path,
12518                              GtkTreeViewColumn *column)
12519 {
12520   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
12521
12522   g_signal_emit (tree_view, tree_view_signals[ROW_ACTIVATED], 0, path, column);
12523 }
12524
12525
12526 static void
12527 gtk_tree_view_expand_all_emission_helper (GtkRBTree *tree,
12528                                           GtkRBNode *node,
12529                                           gpointer   data)
12530 {
12531   GtkTreeView *tree_view = data;
12532
12533   if ((node->flags & GTK_RBNODE_IS_PARENT) == GTK_RBNODE_IS_PARENT &&
12534       node->children)
12535     {
12536       GtkTreePath *path;
12537       GtkTreeIter iter;
12538
12539       path = _gtk_tree_path_new_from_rbtree (tree, node);
12540       gtk_tree_model_get_iter (tree_view->priv->model, &iter, path);
12541
12542       g_signal_emit (tree_view, tree_view_signals[ROW_EXPANDED], 0, &iter, path);
12543
12544       gtk_tree_path_free (path);
12545     }
12546
12547   if (node->children)
12548     _gtk_rbtree_traverse (node->children,
12549                           node->children->root,
12550                           G_PRE_ORDER,
12551                           gtk_tree_view_expand_all_emission_helper,
12552                           tree_view);
12553 }
12554
12555 /**
12556  * gtk_tree_view_expand_all:
12557  * @tree_view: A #GtkTreeView.
12558  *
12559  * Recursively expands all nodes in the @tree_view.
12560  **/
12561 void
12562 gtk_tree_view_expand_all (GtkTreeView *tree_view)
12563 {
12564   GtkTreePath *path;
12565   GtkRBTree *tree;
12566   GtkRBNode *node;
12567
12568   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
12569
12570   if (tree_view->priv->tree == NULL)
12571     return;
12572
12573   path = gtk_tree_path_new_first ();
12574   _gtk_tree_view_find_node (tree_view, path, &tree, &node);
12575
12576   while (node)
12577     {
12578       gtk_tree_view_real_expand_row (tree_view, path, tree, node, TRUE, FALSE);
12579       node = _gtk_rbtree_next (tree, node);
12580       gtk_tree_path_next (path);
12581   }
12582
12583   gtk_tree_path_free (path);
12584 }
12585
12586 /**
12587  * gtk_tree_view_collapse_all:
12588  * @tree_view: A #GtkTreeView.
12589  *
12590  * Recursively collapses all visible, expanded nodes in @tree_view.
12591  **/
12592 void
12593 gtk_tree_view_collapse_all (GtkTreeView *tree_view)
12594 {
12595   GtkRBTree *tree;
12596   GtkRBNode *node;
12597   GtkTreePath *path;
12598   gint *indices;
12599
12600   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
12601
12602   if (tree_view->priv->tree == NULL)
12603     return;
12604
12605   path = gtk_tree_path_new ();
12606   gtk_tree_path_down (path);
12607   indices = gtk_tree_path_get_indices (path);
12608
12609   tree = tree_view->priv->tree;
12610   node = _gtk_rbtree_first (tree);
12611
12612   while (node)
12613     {
12614       if (node->children)
12615         gtk_tree_view_real_collapse_row (tree_view, path, tree, node, FALSE);
12616       indices[0]++;
12617       node = _gtk_rbtree_next (tree, node);
12618     }
12619
12620   gtk_tree_path_free (path);
12621 }
12622
12623 /**
12624  * gtk_tree_view_expand_to_path:
12625  * @tree_view: A #GtkTreeView.
12626  * @path: path to a row.
12627  *
12628  * Expands the row at @path. This will also expand all parent rows of
12629  * @path as necessary.
12630  *
12631  * Since: 2.2
12632  **/
12633 void
12634 gtk_tree_view_expand_to_path (GtkTreeView *tree_view,
12635                               GtkTreePath *path)
12636 {
12637   gint i, depth;
12638   gint *indices;
12639   GtkTreePath *tmp;
12640
12641   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
12642   g_return_if_fail (path != NULL);
12643
12644   depth = gtk_tree_path_get_depth (path);
12645   indices = gtk_tree_path_get_indices (path);
12646
12647   tmp = gtk_tree_path_new ();
12648   g_return_if_fail (tmp != NULL);
12649
12650   for (i = 0; i < depth; i++)
12651     {
12652       gtk_tree_path_append_index (tmp, indices[i]);
12653       gtk_tree_view_expand_row (tree_view, tmp, FALSE);
12654     }
12655
12656   gtk_tree_path_free (tmp);
12657 }
12658
12659 /* FIXME the bool return values for expand_row and collapse_row are
12660  * not analagous; they should be TRUE if the row had children and
12661  * was not already in the requested state.
12662  */
12663
12664
12665 static gboolean
12666 gtk_tree_view_real_expand_row (GtkTreeView *tree_view,
12667                                GtkTreePath *path,
12668                                GtkRBTree   *tree,
12669                                GtkRBNode   *node,
12670                                gboolean     open_all,
12671                                gboolean     animate)
12672 {
12673   GtkTreeIter iter;
12674   GtkTreeIter temp;
12675   gboolean expand;
12676
12677   if (animate)
12678     g_object_get (gtk_widget_get_settings (GTK_WIDGET (tree_view)),
12679                   "gtk-enable-animations", &animate,
12680                   NULL);
12681
12682   remove_auto_expand_timeout (tree_view);
12683
12684   if (node->children && !open_all)
12685     return FALSE;
12686
12687   if (! GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_PARENT))
12688     return FALSE;
12689
12690   gtk_tree_model_get_iter (tree_view->priv->model, &iter, path);
12691   if (! gtk_tree_model_iter_has_child (tree_view->priv->model, &iter))
12692     return FALSE;
12693
12694
12695    if (node->children && open_all)
12696     {
12697       gboolean retval = FALSE;
12698       GtkTreePath *tmp_path = gtk_tree_path_copy (path);
12699
12700       gtk_tree_path_append_index (tmp_path, 0);
12701       tree = node->children;
12702       node = _gtk_rbtree_first (tree);
12703       /* try to expand the children */
12704       do
12705         {
12706          gboolean t;
12707          t = gtk_tree_view_real_expand_row (tree_view, tmp_path, tree, node,
12708                                             TRUE, animate);
12709          if (t)
12710            retval = TRUE;
12711
12712          gtk_tree_path_next (tmp_path);
12713          node = _gtk_rbtree_next (tree, node);
12714        }
12715       while (node != NULL);
12716
12717       gtk_tree_path_free (tmp_path);
12718
12719       return retval;
12720     }
12721
12722   g_signal_emit (tree_view, tree_view_signals[TEST_EXPAND_ROW], 0, &iter, path, &expand);
12723
12724   if (!gtk_tree_model_iter_has_child (tree_view->priv->model, &iter))
12725     return FALSE;
12726
12727   if (expand)
12728     return FALSE;
12729
12730   node->children = _gtk_rbtree_new ();
12731   node->children->parent_tree = tree;
12732   node->children->parent_node = node;
12733
12734   gtk_tree_model_iter_children (tree_view->priv->model, &temp, &iter);
12735
12736   gtk_tree_view_build_tree (tree_view,
12737                             node->children,
12738                             &temp,
12739                             gtk_tree_path_get_depth (path) + 1,
12740                             open_all);
12741
12742   if (animate)
12743     {
12744       GtkStyleContext *context;
12745
12746       context = gtk_widget_get_style_context (GTK_WIDGET (tree_view));
12747
12748       gtk_style_context_save (context);
12749       gtk_style_context_add_class (context, GTK_STYLE_CLASS_EXPANDER);
12750
12751       gtk_style_context_notify_state_change (context, tree_view->priv->bin_window,
12752                                              node, GTK_STATE_ACTIVE, TRUE);
12753
12754       _gtk_style_context_invalidate_animation_areas (context);
12755       gtk_style_context_restore (context);
12756     }
12757
12758   install_presize_handler (tree_view);
12759
12760   g_signal_emit (tree_view, tree_view_signals[ROW_EXPANDED], 0, &iter, path);
12761   if (open_all && node->children)
12762     {
12763       _gtk_rbtree_traverse (node->children,
12764                             node->children->root,
12765                             G_PRE_ORDER,
12766                             gtk_tree_view_expand_all_emission_helper,
12767                             tree_view);
12768     }
12769   return TRUE;
12770 }
12771
12772
12773 /**
12774  * gtk_tree_view_expand_row:
12775  * @tree_view: a #GtkTreeView
12776  * @path: path to a row
12777  * @open_all: whether to recursively expand, or just expand immediate children
12778  *
12779  * Opens the row so its children are visible.
12780  *
12781  * Return value: %TRUE if the row existed and had children
12782  **/
12783 gboolean
12784 gtk_tree_view_expand_row (GtkTreeView *tree_view,
12785                           GtkTreePath *path,
12786                           gboolean     open_all)
12787 {
12788   GtkRBTree *tree;
12789   GtkRBNode *node;
12790
12791   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), FALSE);
12792   g_return_val_if_fail (tree_view->priv->model != NULL, FALSE);
12793   g_return_val_if_fail (path != NULL, FALSE);
12794
12795   if (_gtk_tree_view_find_node (tree_view,
12796                                 path,
12797                                 &tree,
12798                                 &node))
12799     return FALSE;
12800
12801   if (tree != NULL)
12802     return gtk_tree_view_real_expand_row (tree_view, path, tree, node, open_all, FALSE);
12803   else
12804     return FALSE;
12805 }
12806
12807 static gboolean
12808 gtk_tree_view_real_collapse_row (GtkTreeView *tree_view,
12809                                  GtkTreePath *path,
12810                                  GtkRBTree   *tree,
12811                                  GtkRBNode   *node,
12812                                  gboolean     animate)
12813 {
12814   GtkTreeIter iter;
12815   GtkTreeIter children;
12816   gboolean collapse;
12817   gint x, y;
12818   GList *list;
12819   GdkWindow *child;
12820   gboolean selection_changed, cursor_changed;
12821
12822   if (animate)
12823     g_object_get (gtk_widget_get_settings (GTK_WIDGET (tree_view)),
12824                   "gtk-enable-animations", &animate,
12825                   NULL);
12826
12827   remove_auto_expand_timeout (tree_view);
12828
12829   if (node->children == NULL)
12830     return FALSE;
12831   gtk_tree_model_get_iter (tree_view->priv->model, &iter, path);
12832
12833   g_signal_emit (tree_view, tree_view_signals[TEST_COLLAPSE_ROW], 0, &iter, path, &collapse);
12834
12835   if (collapse)
12836     return FALSE;
12837
12838   /* if the prelighted node is a child of us, we want to unprelight it.  We have
12839    * a chance to prelight the correct node below */
12840
12841   if (tree_view->priv->prelight_tree)
12842     {
12843       GtkRBTree *parent_tree;
12844       GtkRBNode *parent_node;
12845
12846       parent_tree = tree_view->priv->prelight_tree->parent_tree;
12847       parent_node = tree_view->priv->prelight_tree->parent_node;
12848       while (parent_tree)
12849         {
12850           if (parent_tree == tree && parent_node == node)
12851             {
12852               ensure_unprelighted (tree_view);
12853               break;
12854             }
12855           parent_node = parent_tree->parent_node;
12856           parent_tree = parent_tree->parent_tree;
12857         }
12858     }
12859
12860   TREE_VIEW_INTERNAL_ASSERT (gtk_tree_model_iter_children (tree_view->priv->model, &children, &iter), FALSE);
12861
12862   for (list = tree_view->priv->columns; list; list = list->next)
12863     {
12864       GtkTreeViewColumn *column = list->data;
12865
12866       if (gtk_tree_view_column_get_visible (column) == FALSE)
12867         continue;
12868       if (gtk_tree_view_column_get_sizing (column) == GTK_TREE_VIEW_COLUMN_AUTOSIZE)
12869         _gtk_tree_view_column_cell_set_dirty (column, TRUE);
12870     }
12871
12872   if (tree_view->priv->destroy_count_func)
12873     {
12874       GtkTreePath *child_path;
12875       gint child_count = 0;
12876       child_path = gtk_tree_path_copy (path);
12877       gtk_tree_path_down (child_path);
12878       if (node->children)
12879         _gtk_rbtree_traverse (node->children, node->children->root, G_POST_ORDER, count_children_helper, &child_count);
12880       tree_view->priv->destroy_count_func (tree_view, child_path, child_count, tree_view->priv->destroy_count_data);
12881       gtk_tree_path_free (child_path);
12882     }
12883
12884   if (tree_view->priv->cursor_node)
12885     {
12886       cursor_changed = (node->children == tree_view->priv->cursor_tree)
12887                        || _gtk_rbtree_contains (node->children, tree_view->priv->cursor_tree);
12888     }
12889
12890   if (gtk_tree_row_reference_valid (tree_view->priv->anchor))
12891     {
12892       GtkTreePath *anchor_path = gtk_tree_row_reference_get_path (tree_view->priv->anchor);
12893       if (gtk_tree_path_is_ancestor (path, anchor_path))
12894         {
12895           gtk_tree_row_reference_free (tree_view->priv->anchor);
12896           tree_view->priv->anchor = NULL;
12897         }
12898       gtk_tree_path_free (anchor_path);
12899     }
12900
12901   selection_changed = gtk_tree_view_unref_and_check_selection_tree (tree_view, node->children);
12902
12903   /* Stop a pending double click */
12904   tree_view->priv->last_button_x = -1;
12905   tree_view->priv->last_button_y = -1;
12906
12907   _gtk_tree_view_accessible_remove (tree_view, node->children, NULL);
12908
12909   _gtk_rbtree_remove (node->children);
12910
12911   /* if we change the cursor, we also change the selection,
12912    * so no need to emit selection-changed. */
12913   if (cursor_changed)
12914     gtk_tree_view_real_set_cursor (tree_view, path, CLEAR_AND_SELECT | CURSOR_INVALID);
12915   else if (selection_changed)
12916     g_signal_emit_by_name (tree_view->priv->selection, "changed");
12917
12918   if (animate)
12919     {
12920       GtkStyleContext *context;
12921
12922       context = gtk_widget_get_style_context (GTK_WIDGET (tree_view));
12923
12924       gtk_style_context_save (context);
12925       gtk_style_context_add_class (context, GTK_STYLE_CLASS_EXPANDER);
12926
12927       gtk_style_context_notify_state_change (context, tree_view->priv->bin_window,
12928                                              node, GTK_STATE_ACTIVE, FALSE);
12929
12930       _gtk_style_context_invalidate_animation_areas (context);
12931       gtk_style_context_restore (context);
12932     }
12933
12934   if (gtk_widget_get_mapped (GTK_WIDGET (tree_view)))
12935     {
12936       gtk_widget_queue_resize (GTK_WIDGET (tree_view));
12937     }
12938
12939   g_signal_emit (tree_view, tree_view_signals[ROW_COLLAPSED], 0, &iter, path);
12940
12941   if (gtk_widget_get_mapped (GTK_WIDGET (tree_view)))
12942     {
12943       /* now that we've collapsed all rows, we want to try to set the prelight
12944        * again. To do this, we fake a motion event and send it to ourselves. */
12945
12946       child = gdk_window_get_device_position (gdk_window_get_parent (tree_view->priv->bin_window),
12947                                               gdk_device_manager_get_client_pointer (
12948                                                 gdk_display_get_device_manager (
12949                                                   gtk_widget_get_display (GTK_WIDGET (tree_view)))),
12950                                               &x, &y, NULL);
12951       if (child == tree_view->priv->bin_window)
12952         {
12953           GdkEventMotion event;
12954           gint child_x, child_y;
12955
12956           gdk_window_get_position (child, &child_x, &child_y);
12957
12958           event.window = tree_view->priv->bin_window;
12959           event.x = x - child_x;
12960           event.y = y - child_y;
12961
12962           /* despite the fact this isn't a real event, I'm almost positive it will
12963            * never trigger a drag event.  maybe_drag is the only function that uses
12964            * more than just event.x and event.y. */
12965           gtk_tree_view_motion_bin_window (GTK_WIDGET (tree_view), &event);
12966         }
12967     }
12968
12969   return TRUE;
12970 }
12971
12972 /**
12973  * gtk_tree_view_collapse_row:
12974  * @tree_view: a #GtkTreeView
12975  * @path: path to a row in the @tree_view
12976  *
12977  * Collapses a row (hides its child rows, if they exist).
12978  *
12979  * Return value: %TRUE if the row was collapsed.
12980  **/
12981 gboolean
12982 gtk_tree_view_collapse_row (GtkTreeView *tree_view,
12983                             GtkTreePath *path)
12984 {
12985   GtkRBTree *tree;
12986   GtkRBNode *node;
12987
12988   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), FALSE);
12989   g_return_val_if_fail (tree_view->priv->tree != NULL, FALSE);
12990   g_return_val_if_fail (path != NULL, FALSE);
12991
12992   if (_gtk_tree_view_find_node (tree_view,
12993                                 path,
12994                                 &tree,
12995                                 &node))
12996     return FALSE;
12997
12998   if (tree == NULL || node->children == NULL)
12999     return FALSE;
13000
13001   return gtk_tree_view_real_collapse_row (tree_view, path, tree, node, FALSE);
13002 }
13003
13004 static void
13005 gtk_tree_view_map_expanded_rows_helper (GtkTreeView            *tree_view,
13006                                         GtkRBTree              *tree,
13007                                         GtkTreePath            *path,
13008                                         GtkTreeViewMappingFunc  func,
13009                                         gpointer                user_data)
13010 {
13011   GtkRBNode *node;
13012
13013   if (tree == NULL || tree->root == NULL)
13014     return;
13015
13016   node = _gtk_rbtree_first (tree);
13017
13018   while (node)
13019     {
13020       if (node->children)
13021         {
13022           (* func) (tree_view, path, user_data);
13023           gtk_tree_path_down (path);
13024           gtk_tree_view_map_expanded_rows_helper (tree_view, node->children, path, func, user_data);
13025           gtk_tree_path_up (path);
13026         }
13027       gtk_tree_path_next (path);
13028       node = _gtk_rbtree_next (tree, node);
13029     }
13030 }
13031
13032 /**
13033  * gtk_tree_view_map_expanded_rows:
13034  * @tree_view: A #GtkTreeView
13035  * @func: (scope call): A function to be called
13036  * @data: User data to be passed to the function.
13037  *
13038  * Calls @func on all expanded rows.
13039  **/
13040 void
13041 gtk_tree_view_map_expanded_rows (GtkTreeView            *tree_view,
13042                                  GtkTreeViewMappingFunc  func,
13043                                  gpointer                user_data)
13044 {
13045   GtkTreePath *path;
13046
13047   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
13048   g_return_if_fail (func != NULL);
13049
13050   path = gtk_tree_path_new_first ();
13051
13052   gtk_tree_view_map_expanded_rows_helper (tree_view,
13053                                           tree_view->priv->tree,
13054                                           path, func, user_data);
13055
13056   gtk_tree_path_free (path);
13057 }
13058
13059 /**
13060  * gtk_tree_view_row_expanded:
13061  * @tree_view: A #GtkTreeView.
13062  * @path: A #GtkTreePath to test expansion state.
13063  *
13064  * Returns %TRUE if the node pointed to by @path is expanded in @tree_view.
13065  *
13066  * Return value: %TRUE if #path is expanded.
13067  **/
13068 gboolean
13069 gtk_tree_view_row_expanded (GtkTreeView *tree_view,
13070                             GtkTreePath *path)
13071 {
13072   GtkRBTree *tree;
13073   GtkRBNode *node;
13074
13075   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), FALSE);
13076   g_return_val_if_fail (path != NULL, FALSE);
13077
13078   _gtk_tree_view_find_node (tree_view, path, &tree, &node);
13079
13080   if (node == NULL)
13081     return FALSE;
13082
13083   return (node->children != NULL);
13084 }
13085
13086 /**
13087  * gtk_tree_view_get_reorderable:
13088  * @tree_view: a #GtkTreeView
13089  *
13090  * Retrieves whether the user can reorder the tree via drag-and-drop. See
13091  * gtk_tree_view_set_reorderable().
13092  *
13093  * Return value: %TRUE if the tree can be reordered.
13094  **/
13095 gboolean
13096 gtk_tree_view_get_reorderable (GtkTreeView *tree_view)
13097 {
13098   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), FALSE);
13099
13100   return tree_view->priv->reorderable;
13101 }
13102
13103 /**
13104  * gtk_tree_view_set_reorderable:
13105  * @tree_view: A #GtkTreeView.
13106  * @reorderable: %TRUE, if the tree can be reordered.
13107  *
13108  * This function is a convenience function to allow you to reorder
13109  * models that support the #GtkTreeDragSourceIface and the
13110  * #GtkTreeDragDestIface.  Both #GtkTreeStore and #GtkListStore support
13111  * these.  If @reorderable is %TRUE, then the user can reorder the
13112  * model by dragging and dropping rows. The developer can listen to
13113  * these changes by connecting to the model's row_inserted and
13114  * row_deleted signals. The reordering is implemented by setting up
13115  * the tree view as a drag source and destination. Therefore, drag and
13116  * drop can not be used in a reorderable view for any other purpose.
13117  *
13118  * This function does not give you any degree of control over the order -- any
13119  * reordering is allowed.  If more control is needed, you should probably
13120  * handle drag and drop manually.
13121  **/
13122 void
13123 gtk_tree_view_set_reorderable (GtkTreeView *tree_view,
13124                                gboolean     reorderable)
13125 {
13126   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
13127
13128   reorderable = reorderable != FALSE;
13129
13130   if (tree_view->priv->reorderable == reorderable)
13131     return;
13132
13133   if (reorderable)
13134     {
13135       const GtkTargetEntry row_targets[] = {
13136         { "GTK_TREE_MODEL_ROW", GTK_TARGET_SAME_WIDGET, 0 }
13137       };
13138
13139       gtk_tree_view_enable_model_drag_source (tree_view,
13140                                               GDK_BUTTON1_MASK,
13141                                               row_targets,
13142                                               G_N_ELEMENTS (row_targets),
13143                                               GDK_ACTION_MOVE);
13144       gtk_tree_view_enable_model_drag_dest (tree_view,
13145                                             row_targets,
13146                                             G_N_ELEMENTS (row_targets),
13147                                             GDK_ACTION_MOVE);
13148     }
13149   else
13150     {
13151       gtk_tree_view_unset_rows_drag_source (tree_view);
13152       gtk_tree_view_unset_rows_drag_dest (tree_view);
13153     }
13154
13155   tree_view->priv->reorderable = reorderable;
13156
13157   g_object_notify (G_OBJECT (tree_view), "reorderable");
13158 }
13159
13160 static void
13161 gtk_tree_view_real_set_cursor (GtkTreeView     *tree_view,
13162                                GtkTreePath     *path,
13163                                SetCursorFlags   flags)
13164 {
13165   if (!(flags & CURSOR_INVALID) && tree_view->priv->cursor_node)
13166     {
13167       _gtk_tree_view_queue_draw_node (tree_view,
13168                                       tree_view->priv->cursor_tree,
13169                                       tree_view->priv->cursor_node,
13170                                       NULL);
13171     }
13172
13173   /* One cannot set the cursor on a separator.   Also, if
13174    * _gtk_tree_view_find_node returns TRUE, it ran out of tree
13175    * before finding the tree and node belonging to path.  The
13176    * path maps to a non-existing path and we will silently bail out.
13177    * We unset tree and node to avoid further processing.
13178    */
13179   if (row_is_separator (tree_view, NULL, path)
13180       || _gtk_tree_view_find_node (tree_view,
13181                                    path,
13182                                    &tree_view->priv->cursor_tree,
13183                                    &tree_view->priv->cursor_node))
13184     {
13185       tree_view->priv->cursor_tree = NULL;
13186       tree_view->priv->cursor_node = NULL;
13187     }
13188
13189   if (tree_view->priv->cursor_node != NULL)
13190     {
13191       GtkRBTree *new_tree = NULL;
13192       GtkRBNode *new_node = NULL;
13193
13194       if ((flags & CLEAR_AND_SELECT) && !tree_view->priv->modify_selection_pressed)
13195         {
13196           GtkTreeSelectMode mode = 0;
13197
13198           if (tree_view->priv->extend_selection_pressed)
13199             mode |= GTK_TREE_SELECT_MODE_EXTEND;
13200
13201           _gtk_tree_selection_internal_select_node (tree_view->priv->selection,
13202                                                     tree_view->priv->cursor_node,
13203                                                     tree_view->priv->cursor_tree,
13204                                                     path,
13205                                                     mode,
13206                                                     FALSE);
13207         }
13208
13209       /* We have to re-find tree and node here again, somebody might have
13210        * cleared the node or the whole tree in the GtkTreeSelection::changed
13211        * callback. If the nodes differ we bail out here.
13212        */
13213       _gtk_tree_view_find_node (tree_view, path, &new_tree, &new_node);
13214
13215       if (tree_view->priv->cursor_node != new_node)
13216         return;
13217
13218       if (flags & CLAMP_NODE)
13219         {
13220           gtk_tree_view_clamp_node_visible (tree_view,
13221                                             tree_view->priv->cursor_tree,
13222                                             tree_view->priv->cursor_node);
13223           _gtk_tree_view_queue_draw_node (tree_view,
13224                                           tree_view->priv->cursor_tree,
13225                                           tree_view->priv->cursor_node,
13226                                           NULL);
13227         }
13228     }
13229
13230   g_signal_emit (tree_view, tree_view_signals[CURSOR_CHANGED], 0);
13231 }
13232
13233 /**
13234  * gtk_tree_view_get_cursor:
13235  * @tree_view: A #GtkTreeView
13236  * @path: (out) (transfer full) (allow-none): A pointer to be filled with the current cursor path, or %NULL
13237  * @focus_column: (out) (transfer none) (allow-none): A pointer to be filled with the current focus column, or %NULL
13238  *
13239  * Fills in @path and @focus_column with the current path and focus column.  If
13240  * the cursor isn't currently set, then *@path will be %NULL.  If no column
13241  * currently has focus, then *@focus_column will be %NULL.
13242  *
13243  * The returned #GtkTreePath must be freed with gtk_tree_path_free() when
13244  * you are done with it.
13245  **/
13246 void
13247 gtk_tree_view_get_cursor (GtkTreeView        *tree_view,
13248                           GtkTreePath       **path,
13249                           GtkTreeViewColumn **focus_column)
13250 {
13251   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
13252
13253   if (path)
13254     {
13255       if (tree_view->priv->cursor_node)
13256         *path = _gtk_tree_path_new_from_rbtree (tree_view->priv->cursor_tree,
13257                                                 tree_view->priv->cursor_node);
13258       else
13259         *path = NULL;
13260     }
13261
13262   if (focus_column)
13263     {
13264       *focus_column = tree_view->priv->focus_column;
13265     }
13266 }
13267
13268 /**
13269  * gtk_tree_view_set_cursor:
13270  * @tree_view: A #GtkTreeView
13271  * @path: A #GtkTreePath
13272  * @focus_column: (allow-none): A #GtkTreeViewColumn, or %NULL
13273  * @start_editing: %TRUE if the specified cell should start being edited.
13274  *
13275  * Sets the current keyboard focus to be at @path, and selects it.  This is
13276  * useful when you want to focus the user's attention on a particular row.  If
13277  * @focus_column is not %NULL, then focus is given to the column specified by
13278  * it. Additionally, if @focus_column is specified, and @start_editing is
13279  * %TRUE, then editing should be started in the specified cell.
13280  * This function is often followed by @gtk_widget_grab_focus (@tree_view)
13281  * in order to give keyboard focus to the widget.  Please note that editing
13282  * can only happen when the widget is realized.
13283  *
13284  * If @path is invalid for @model, the current cursor (if any) will be unset
13285  * and the function will return without failing.
13286  **/
13287 void
13288 gtk_tree_view_set_cursor (GtkTreeView       *tree_view,
13289                           GtkTreePath       *path,
13290                           GtkTreeViewColumn *focus_column,
13291                           gboolean           start_editing)
13292 {
13293   gtk_tree_view_set_cursor_on_cell (tree_view, path, focus_column,
13294                                     NULL, start_editing);
13295 }
13296
13297 /**
13298  * gtk_tree_view_set_cursor_on_cell:
13299  * @tree_view: A #GtkTreeView
13300  * @path: A #GtkTreePath
13301  * @focus_column: (allow-none): A #GtkTreeViewColumn, or %NULL
13302  * @focus_cell: (allow-none): A #GtkCellRenderer, or %NULL
13303  * @start_editing: %TRUE if the specified cell should start being edited.
13304  *
13305  * Sets the current keyboard focus to be at @path, and selects it.  This is
13306  * useful when you want to focus the user's attention on a particular row.  If
13307  * @focus_column is not %NULL, then focus is given to the column specified by
13308  * it. If @focus_column and @focus_cell are not %NULL, and @focus_column
13309  * contains 2 or more editable or activatable cells, then focus is given to
13310  * the cell specified by @focus_cell. Additionally, if @focus_column is
13311  * specified, and @start_editing is %TRUE, then editing should be started in
13312  * the specified cell.  This function is often followed by
13313  * @gtk_widget_grab_focus (@tree_view) in order to give keyboard focus to the
13314  * widget.  Please note that editing can only happen when the widget is
13315  * realized.
13316  *
13317  * If @path is invalid for @model, the current cursor (if any) will be unset
13318  * and the function will return without failing.
13319  *
13320  * Since: 2.2
13321  **/
13322 void
13323 gtk_tree_view_set_cursor_on_cell (GtkTreeView       *tree_view,
13324                                   GtkTreePath       *path,
13325                                   GtkTreeViewColumn *focus_column,
13326                                   GtkCellRenderer   *focus_cell,
13327                                   gboolean           start_editing)
13328 {
13329   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
13330   g_return_if_fail (path != NULL);
13331   g_return_if_fail (focus_column == NULL || GTK_IS_TREE_VIEW_COLUMN (focus_column));
13332
13333   if (!tree_view->priv->model)
13334     return;
13335
13336   if (focus_cell)
13337     {
13338       g_return_if_fail (focus_column);
13339       g_return_if_fail (GTK_IS_CELL_RENDERER (focus_cell));
13340     }
13341
13342   /* cancel the current editing, if it exists */
13343   if (tree_view->priv->edited_column &&
13344       gtk_cell_area_get_edit_widget
13345       (gtk_cell_layout_get_area (GTK_CELL_LAYOUT (tree_view->priv->edited_column))))
13346     gtk_tree_view_stop_editing (tree_view, TRUE);
13347
13348   gtk_tree_view_real_set_cursor (tree_view, path, CLEAR_AND_SELECT | CLAMP_NODE);
13349
13350   if (focus_column &&
13351       gtk_tree_view_column_get_visible (focus_column))
13352     {
13353       GList *list;
13354       gboolean column_in_tree = FALSE;
13355
13356       for (list = tree_view->priv->columns; list; list = list->next)
13357         if (list->data == focus_column)
13358           {
13359             column_in_tree = TRUE;
13360             break;
13361           }
13362       g_return_if_fail (column_in_tree);
13363       tree_view->priv->focus_column = focus_column;
13364       if (focus_cell)
13365         gtk_tree_view_column_focus_cell (focus_column, focus_cell);
13366       if (start_editing)
13367         gtk_tree_view_start_editing (tree_view, path, TRUE);
13368     }
13369 }
13370
13371 /**
13372  * gtk_tree_view_get_bin_window:
13373  * @tree_view: A #GtkTreeView
13374  *
13375  * Returns the window that @tree_view renders to.
13376  * This is used primarily to compare to <literal>event->window</literal>
13377  * to confirm that the event on @tree_view is on the right window.
13378  *
13379  * Return value: (transfer none): A #GdkWindow, or %NULL when @tree_view
13380  *     hasn't been realized yet
13381  **/
13382 GdkWindow *
13383 gtk_tree_view_get_bin_window (GtkTreeView *tree_view)
13384 {
13385   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), NULL);
13386
13387   return tree_view->priv->bin_window;
13388 }
13389
13390 /**
13391  * gtk_tree_view_get_path_at_pos:
13392  * @tree_view: A #GtkTreeView.
13393  * @x: The x position to be identified (relative to bin_window).
13394  * @y: The y position to be identified (relative to bin_window).
13395  * @path: (out) (allow-none): A pointer to a #GtkTreePath pointer to be filled in, or %NULL
13396  * @column: (out) (transfer none) (allow-none): A pointer to a #GtkTreeViewColumn pointer to be filled in, or %NULL
13397  * @cell_x: (out) (allow-none): A pointer where the X coordinate relative to the cell can be placed, or %NULL
13398  * @cell_y: (out) (allow-none): A pointer where the Y coordinate relative to the cell can be placed, or %NULL
13399  *
13400  * Finds the path at the point (@x, @y), relative to bin_window coordinates
13401  * (please see gtk_tree_view_get_bin_window()).
13402  * That is, @x and @y are relative to an events coordinates. @x and @y must
13403  * come from an event on the @tree_view only where <literal>event->window ==
13404  * gtk_tree_view_get_bin_window (<!-- -->)</literal>. It is primarily for
13405  * things like popup menus. If @path is non-%NULL, then it will be filled
13406  * with the #GtkTreePath at that point.  This path should be freed with
13407  * gtk_tree_path_free().  If @column is non-%NULL, then it will be filled
13408  * with the column at that point.  @cell_x and @cell_y return the coordinates
13409  * relative to the cell background (i.e. the @background_area passed to
13410  * gtk_cell_renderer_render()).  This function is only meaningful if
13411  * @tree_view is realized.  Therefore this function will always return %FALSE
13412  * if @tree_view is not realized or does not have a model.
13413  *
13414  * For converting widget coordinates (eg. the ones you get from
13415  * GtkWidget::query-tooltip), please see
13416  * gtk_tree_view_convert_widget_to_bin_window_coords().
13417  *
13418  * Return value: %TRUE if a row exists at that coordinate.
13419  **/
13420 gboolean
13421 gtk_tree_view_get_path_at_pos (GtkTreeView        *tree_view,
13422                                gint                x,
13423                                gint                y,
13424                                GtkTreePath       **path,
13425                                GtkTreeViewColumn **column,
13426                                gint               *cell_x,
13427                                gint               *cell_y)
13428 {
13429   GtkRBTree *tree;
13430   GtkRBNode *node;
13431   gint y_offset;
13432
13433   g_return_val_if_fail (tree_view != NULL, FALSE);
13434
13435   if (path)
13436     *path = NULL;
13437   if (column)
13438     *column = NULL;
13439
13440   if (tree_view->priv->bin_window == NULL)
13441     return FALSE;
13442
13443   if (tree_view->priv->tree == NULL)
13444     return FALSE;
13445
13446   if (x > gtk_adjustment_get_upper (tree_view->priv->hadjustment))
13447     return FALSE;
13448
13449   if (x < 0 || y < 0)
13450     return FALSE;
13451
13452   if (column || cell_x)
13453     {
13454       GtkTreeViewColumn *tmp_column;
13455       GtkTreeViewColumn *last_column = NULL;
13456       GList *list;
13457       gint remaining_x = x;
13458       gboolean found = FALSE;
13459       gboolean rtl;
13460       gint width;
13461
13462       rtl = (gtk_widget_get_direction (GTK_WIDGET (tree_view)) == GTK_TEXT_DIR_RTL);
13463       for (list = (rtl ? g_list_last (tree_view->priv->columns) : g_list_first (tree_view->priv->columns));
13464            list;
13465            list = (rtl ? list->prev : list->next))
13466         {
13467           tmp_column = list->data;
13468
13469           if (gtk_tree_view_column_get_visible (tmp_column) == FALSE)
13470             continue;
13471
13472           last_column = tmp_column;
13473           width = gtk_tree_view_column_get_width (tmp_column);
13474           if (remaining_x <= width)
13475             {
13476               found = TRUE;
13477
13478               if (column)
13479                 *column = tmp_column;
13480
13481               if (cell_x)
13482                 *cell_x = remaining_x;
13483
13484               break;
13485             }
13486           remaining_x -= width;
13487         }
13488
13489       /* If found is FALSE and there is a last_column, then it the remainder
13490        * space is in that area
13491        */
13492       if (!found)
13493         {
13494           if (last_column)
13495             {
13496               if (column)
13497                 *column = last_column;
13498
13499               if (cell_x)
13500                 *cell_x = gtk_tree_view_column_get_width (last_column) + remaining_x;
13501             }
13502           else
13503             {
13504               return FALSE;
13505             }
13506         }
13507     }
13508
13509   y_offset = _gtk_rbtree_find_offset (tree_view->priv->tree,
13510                                       TREE_WINDOW_Y_TO_RBTREE_Y (tree_view, y),
13511                                       &tree, &node);
13512
13513   if (tree == NULL)
13514     return FALSE;
13515
13516   if (cell_y)
13517     *cell_y = y_offset;
13518
13519   if (path)
13520     *path = _gtk_tree_path_new_from_rbtree (tree, node);
13521
13522   return TRUE;
13523 }
13524
13525
13526 static inline gint
13527 gtk_tree_view_get_cell_area_height (GtkTreeView *tree_view,
13528                                     GtkRBNode   *node,
13529                                     gint         vertical_separator)
13530 {
13531   int height;
13532
13533   /* The "cell" areas are the cell_area passed in to gtk_cell_renderer_render(),
13534    * i.e. just the cells, no spacing.
13535    *
13536    * The cell area height is at least expander_size - vertical_separator.
13537    * For regular nodes, the height is then at least expander_size. We should
13538    * be able to enforce the expander_size minimum here, because this
13539    * function will not be called for irregular (e.g. separator) rows.
13540    */
13541   height = gtk_tree_view_get_row_height (tree_view, node);
13542   if (height < tree_view->priv->expander_size)
13543     height = tree_view->priv->expander_size;
13544
13545   return height - vertical_separator;
13546 }
13547
13548 static inline gint
13549 gtk_tree_view_get_cell_area_y_offset (GtkTreeView *tree_view,
13550                                       GtkRBTree   *tree,
13551                                       GtkRBNode   *node,
13552                                       gint         vertical_separator)
13553 {
13554   int offset;
13555
13556   offset = gtk_tree_view_get_row_y_offset (tree_view, tree, node);
13557   offset += vertical_separator / 2;
13558
13559   return offset;
13560 }
13561
13562 /**
13563  * gtk_tree_view_get_cell_area:
13564  * @tree_view: a #GtkTreeView
13565  * @path: (allow-none): a #GtkTreePath for the row, or %NULL to get only horizontal coordinates
13566  * @column: (allow-none): a #GtkTreeViewColumn for the column, or %NULL to get only vertical coordinates
13567  * @rect: (out): rectangle to fill with cell rect
13568  *
13569  * Fills the bounding rectangle in bin_window coordinates for the cell at the
13570  * row specified by @path and the column specified by @column.  If @path is
13571  * %NULL, or points to a path not currently displayed, the @y and @height fields
13572  * of the rectangle will be filled with 0. If @column is %NULL, the @x and @width
13573  * fields will be filled with 0.  The sum of all cell rects does not cover the
13574  * entire tree; there are extra pixels in between rows, for example. The
13575  * returned rectangle is equivalent to the @cell_area passed to
13576  * gtk_cell_renderer_render().  This function is only valid if @tree_view is
13577  * realized.
13578  **/
13579 void
13580 gtk_tree_view_get_cell_area (GtkTreeView        *tree_view,
13581                              GtkTreePath        *path,
13582                              GtkTreeViewColumn  *column,
13583                              GdkRectangle       *rect)
13584 {
13585   GtkRBTree *tree = NULL;
13586   GtkRBNode *node = NULL;
13587   gint vertical_separator;
13588   gint horizontal_separator;
13589
13590   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
13591   g_return_if_fail (column == NULL || GTK_IS_TREE_VIEW_COLUMN (column));
13592   g_return_if_fail (rect != NULL);
13593   g_return_if_fail (!column || gtk_tree_view_column_get_tree_view (column) == (GtkWidget *) tree_view);
13594   g_return_if_fail (gtk_widget_get_realized (GTK_WIDGET (tree_view)));
13595
13596   gtk_widget_style_get (GTK_WIDGET (tree_view),
13597                         "vertical-separator", &vertical_separator,
13598                         "horizontal-separator", &horizontal_separator,
13599                         NULL);
13600
13601   rect->x = 0;
13602   rect->y = 0;
13603   rect->width = 0;
13604   rect->height = 0;
13605
13606   if (column)
13607     {
13608       rect->x = gtk_tree_view_column_get_x_offset (column) + horizontal_separator/2;
13609       rect->width = gtk_tree_view_column_get_width (column) - horizontal_separator;
13610     }
13611
13612   if (path)
13613     {
13614       gboolean ret = _gtk_tree_view_find_node (tree_view, path, &tree, &node);
13615
13616       /* Get vertical coords */
13617       if ((!ret && tree == NULL) || ret)
13618         return;
13619
13620       if (row_is_separator (tree_view, NULL, path))
13621         {
13622           /* There isn't really a "cell area" for separator, so we
13623            * return the y, height values for background area instead.
13624            */
13625           rect->y = gtk_tree_view_get_row_y_offset (tree_view, tree, node);
13626           rect->height = gtk_tree_view_get_row_height (tree_view, node);
13627         }
13628       else
13629         {
13630           rect->y = gtk_tree_view_get_cell_area_y_offset (tree_view, tree, node,
13631                                                           vertical_separator);
13632           rect->height = gtk_tree_view_get_cell_area_height (tree_view, node,
13633                                                              vertical_separator);
13634         }
13635
13636       if (column &&
13637           gtk_tree_view_is_expander_column (tree_view, column))
13638         {
13639           gint depth = gtk_tree_path_get_depth (path);
13640           gboolean rtl;
13641
13642           rtl = gtk_widget_get_direction (GTK_WIDGET (tree_view)) == GTK_TEXT_DIR_RTL;
13643
13644           if (!rtl)
13645             rect->x += (depth - 1) * tree_view->priv->level_indentation;
13646           rect->width -= (depth - 1) * tree_view->priv->level_indentation;
13647
13648           if (gtk_tree_view_draw_expanders (tree_view))
13649             {
13650               if (!rtl)
13651                 rect->x += depth * tree_view->priv->expander_size;
13652               rect->width -= depth * tree_view->priv->expander_size;
13653             }
13654
13655           rect->width = MAX (rect->width, 0);
13656         }
13657     }
13658 }
13659
13660 static inline gint
13661 gtk_tree_view_get_row_height (GtkTreeView *tree_view,
13662                               GtkRBNode   *node)
13663 {
13664   int height;
13665
13666   /* The "background" areas of all rows/cells add up to cover the entire tree.
13667    * The background includes all inter-row and inter-cell spacing.
13668    *
13669    * If the row pointed at by node does not have a height set, we default
13670    * to expander_size, which is the minimum height for regular nodes.
13671    * Non-regular nodes (e.g. separators) can have a height set smaller
13672    * than expander_size and should not be overruled here.
13673    */
13674   height = GTK_RBNODE_GET_HEIGHT (node);
13675   if (height <= 0)
13676     height = tree_view->priv->expander_size;
13677
13678   return height;
13679 }
13680
13681 static inline gint
13682 gtk_tree_view_get_row_y_offset (GtkTreeView *tree_view,
13683                                 GtkRBTree   *tree,
13684                                 GtkRBNode   *node)
13685 {
13686   int offset;
13687
13688   offset = _gtk_rbtree_node_find_offset (tree, node);
13689
13690   return RBTREE_Y_TO_TREE_WINDOW_Y (tree_view, offset);
13691 }
13692
13693 /**
13694  * gtk_tree_view_get_background_area:
13695  * @tree_view: a #GtkTreeView
13696  * @path: (allow-none): a #GtkTreePath for the row, or %NULL to get only horizontal coordinates
13697  * @column: (allow-none): a #GtkTreeViewColumn for the column, or %NULL to get only vertical coordiantes
13698  * @rect: (out): rectangle to fill with cell background rect
13699  *
13700  * Fills the bounding rectangle in bin_window coordinates for the cell at the
13701  * row specified by @path and the column specified by @column.  If @path is
13702  * %NULL, or points to a node not found in the tree, the @y and @height fields of
13703  * the rectangle will be filled with 0. If @column is %NULL, the @x and @width
13704  * fields will be filled with 0.  The returned rectangle is equivalent to the
13705  * @background_area passed to gtk_cell_renderer_render().  These background
13706  * areas tile to cover the entire bin window.  Contrast with the @cell_area,
13707  * returned by gtk_tree_view_get_cell_area(), which returns only the cell
13708  * itself, excluding surrounding borders and the tree expander area.
13709  *
13710  **/
13711 void
13712 gtk_tree_view_get_background_area (GtkTreeView        *tree_view,
13713                                    GtkTreePath        *path,
13714                                    GtkTreeViewColumn  *column,
13715                                    GdkRectangle       *rect)
13716 {
13717   GtkRBTree *tree = NULL;
13718   GtkRBNode *node = NULL;
13719
13720   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
13721   g_return_if_fail (column == NULL || GTK_IS_TREE_VIEW_COLUMN (column));
13722   g_return_if_fail (rect != NULL);
13723
13724   rect->x = 0;
13725   rect->y = 0;
13726   rect->width = 0;
13727   rect->height = 0;
13728
13729   if (path)
13730     {
13731       /* Get vertical coords */
13732
13733       if (!_gtk_tree_view_find_node (tree_view, path, &tree, &node) &&
13734           tree == NULL)
13735         return;
13736
13737       rect->y = gtk_tree_view_get_row_y_offset (tree_view, tree, node);
13738       rect->height = gtk_tree_view_get_row_height (tree_view, node);
13739     }
13740
13741   if (column)
13742     {
13743       gint x2 = 0;
13744
13745       gtk_tree_view_get_background_xrange (tree_view, tree, column, &rect->x, &x2);
13746       rect->width = x2 - rect->x;
13747     }
13748 }
13749
13750 /**
13751  * gtk_tree_view_get_visible_rect:
13752  * @tree_view: a #GtkTreeView
13753  * @visible_rect: (out): rectangle to fill
13754  *
13755  * Fills @visible_rect with the currently-visible region of the
13756  * buffer, in tree coordinates. Convert to bin_window coordinates with
13757  * gtk_tree_view_convert_tree_to_bin_window_coords().
13758  * Tree coordinates start at 0,0 for row 0 of the tree, and cover the entire
13759  * scrollable area of the tree.
13760  **/
13761 void
13762 gtk_tree_view_get_visible_rect (GtkTreeView  *tree_view,
13763                                 GdkRectangle *visible_rect)
13764 {
13765   GtkAllocation allocation;
13766   GtkWidget *widget;
13767
13768   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
13769
13770   widget = GTK_WIDGET (tree_view);
13771
13772   if (visible_rect)
13773     {
13774       gtk_widget_get_allocation (widget, &allocation);
13775       visible_rect->x = gtk_adjustment_get_value (tree_view->priv->hadjustment);
13776       visible_rect->y = gtk_adjustment_get_value (tree_view->priv->vadjustment);
13777       visible_rect->width = allocation.width;
13778       visible_rect->height = allocation.height - gtk_tree_view_get_effective_header_height (tree_view);
13779     }
13780 }
13781
13782 /**
13783  * gtk_tree_view_convert_widget_to_tree_coords:
13784  * @tree_view: a #GtkTreeView
13785  * @wx: X coordinate relative to the widget
13786  * @wy: Y coordinate relative to the widget
13787  * @tx: (out): return location for tree X coordinate
13788  * @ty: (out): return location for tree Y coordinate
13789  *
13790  * Converts widget coordinates to coordinates for the
13791  * tree (the full scrollable area of the tree).
13792  *
13793  * Since: 2.12
13794  **/
13795 void
13796 gtk_tree_view_convert_widget_to_tree_coords (GtkTreeView *tree_view,
13797                                              gint         wx,
13798                                              gint         wy,
13799                                              gint        *tx,
13800                                              gint        *ty)
13801 {
13802   gint x, y;
13803
13804   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
13805
13806   gtk_tree_view_convert_widget_to_bin_window_coords (tree_view,
13807                                                      wx, wy,
13808                                                      &x, &y);
13809   gtk_tree_view_convert_bin_window_to_tree_coords (tree_view,
13810                                                    x, y,
13811                                                    tx, ty);
13812 }
13813
13814 /**
13815  * gtk_tree_view_convert_tree_to_widget_coords:
13816  * @tree_view: a #GtkTreeView
13817  * @tx: X coordinate relative to the tree
13818  * @ty: Y coordinate relative to the tree
13819  * @wx: (out): return location for widget X coordinate
13820  * @wy: (out): return location for widget Y coordinate
13821  *
13822  * Converts tree coordinates (coordinates in full scrollable area of the tree)
13823  * to widget coordinates.
13824  *
13825  * Since: 2.12
13826  **/
13827 void
13828 gtk_tree_view_convert_tree_to_widget_coords (GtkTreeView *tree_view,
13829                                              gint         tx,
13830                                              gint         ty,
13831                                              gint        *wx,
13832                                              gint        *wy)
13833 {
13834   gint x, y;
13835
13836   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
13837
13838   gtk_tree_view_convert_tree_to_bin_window_coords (tree_view,
13839                                                    tx, ty,
13840                                                    &x, &y);
13841   gtk_tree_view_convert_bin_window_to_widget_coords (tree_view,
13842                                                      x, y,
13843                                                      wx, wy);
13844 }
13845
13846 /**
13847  * gtk_tree_view_convert_widget_to_bin_window_coords:
13848  * @tree_view: a #GtkTreeView
13849  * @wx: X coordinate relative to the widget
13850  * @wy: Y coordinate relative to the widget
13851  * @bx: (out): return location for bin_window X coordinate
13852  * @by: (out): return location for bin_window Y coordinate
13853  *
13854  * Converts widget coordinates to coordinates for the bin_window
13855  * (see gtk_tree_view_get_bin_window()).
13856  *
13857  * Since: 2.12
13858  **/
13859 void
13860 gtk_tree_view_convert_widget_to_bin_window_coords (GtkTreeView *tree_view,
13861                                                    gint         wx,
13862                                                    gint         wy,
13863                                                    gint        *bx,
13864                                                    gint        *by)
13865 {
13866   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
13867
13868   if (bx)
13869     *bx = wx + gtk_adjustment_get_value (tree_view->priv->hadjustment);
13870   if (by)
13871     *by = wy - gtk_tree_view_get_effective_header_height (tree_view);
13872 }
13873
13874 /**
13875  * gtk_tree_view_convert_bin_window_to_widget_coords:
13876  * @tree_view: a #GtkTreeView
13877  * @bx: bin_window X coordinate
13878  * @by: bin_window Y coordinate
13879  * @wx: (out): return location for widget X coordinate
13880  * @wy: (out): return location for widget Y coordinate
13881  *
13882  * Converts bin_window coordinates (see gtk_tree_view_get_bin_window())
13883  * to widget relative coordinates.
13884  *
13885  * Since: 2.12
13886  **/
13887 void
13888 gtk_tree_view_convert_bin_window_to_widget_coords (GtkTreeView *tree_view,
13889                                                    gint         bx,
13890                                                    gint         by,
13891                                                    gint        *wx,
13892                                                    gint        *wy)
13893 {
13894   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
13895
13896   if (wx)
13897     *wx = bx - gtk_adjustment_get_value (tree_view->priv->hadjustment);
13898   if (wy)
13899     *wy = by + gtk_tree_view_get_effective_header_height (tree_view);
13900 }
13901
13902 /**
13903  * gtk_tree_view_convert_tree_to_bin_window_coords:
13904  * @tree_view: a #GtkTreeView
13905  * @tx: tree X coordinate
13906  * @ty: tree Y coordinate
13907  * @bx: (out): return location for X coordinate relative to bin_window
13908  * @by: (out): return location for Y coordinate relative to bin_window
13909  *
13910  * Converts tree coordinates (coordinates in full scrollable area of the tree)
13911  * to bin_window coordinates.
13912  *
13913  * Since: 2.12
13914  **/
13915 void
13916 gtk_tree_view_convert_tree_to_bin_window_coords (GtkTreeView *tree_view,
13917                                                  gint         tx,
13918                                                  gint         ty,
13919                                                  gint        *bx,
13920                                                  gint        *by)
13921 {
13922   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
13923
13924   if (bx)
13925     *bx = tx;
13926   if (by)
13927     *by = ty - tree_view->priv->dy;
13928 }
13929
13930 /**
13931  * gtk_tree_view_convert_bin_window_to_tree_coords:
13932  * @tree_view: a #GtkTreeView
13933  * @bx: X coordinate relative to bin_window
13934  * @by: Y coordinate relative to bin_window
13935  * @tx: (out): return location for tree X coordinate
13936  * @ty: (out): return location for tree Y coordinate
13937  *
13938  * Converts bin_window coordinates to coordinates for the
13939  * tree (the full scrollable area of the tree).
13940  *
13941  * Since: 2.12
13942  **/
13943 void
13944 gtk_tree_view_convert_bin_window_to_tree_coords (GtkTreeView *tree_view,
13945                                                  gint         bx,
13946                                                  gint         by,
13947                                                  gint        *tx,
13948                                                  gint        *ty)
13949 {
13950   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
13951
13952   if (tx)
13953     *tx = bx;
13954   if (ty)
13955     *ty = by + tree_view->priv->dy;
13956 }
13957
13958
13959
13960 /**
13961  * gtk_tree_view_get_visible_range:
13962  * @tree_view: A #GtkTreeView
13963  * @start_path: (out) (allow-none): Return location for start of region,
13964  *              or %NULL.
13965  * @end_path: (out) (allow-none): Return location for end of region, or %NULL.
13966  *
13967  * Sets @start_path and @end_path to be the first and last visible path.
13968  * Note that there may be invisible paths in between.
13969  *
13970  * The paths should be freed with gtk_tree_path_free() after use.
13971  *
13972  * Returns: %TRUE, if valid paths were placed in @start_path and @end_path.
13973  *
13974  * Since: 2.8
13975  **/
13976 gboolean
13977 gtk_tree_view_get_visible_range (GtkTreeView  *tree_view,
13978                                  GtkTreePath **start_path,
13979                                  GtkTreePath **end_path)
13980 {
13981   GtkRBTree *tree;
13982   GtkRBNode *node;
13983   gboolean retval;
13984
13985   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), FALSE);
13986
13987   if (!tree_view->priv->tree)
13988     return FALSE;
13989
13990   retval = TRUE;
13991
13992   if (start_path)
13993     {
13994       _gtk_rbtree_find_offset (tree_view->priv->tree,
13995                                TREE_WINDOW_Y_TO_RBTREE_Y (tree_view, 0),
13996                                &tree, &node);
13997       if (node)
13998         *start_path = _gtk_tree_path_new_from_rbtree (tree, node);
13999       else
14000         retval = FALSE;
14001     }
14002
14003   if (end_path)
14004     {
14005       gint y;
14006
14007       if (tree_view->priv->height < gtk_adjustment_get_page_size (tree_view->priv->vadjustment))
14008         y = tree_view->priv->height - 1;
14009       else
14010         y = TREE_WINDOW_Y_TO_RBTREE_Y (tree_view, gtk_adjustment_get_page_size (tree_view->priv->vadjustment)) - 1;
14011
14012       _gtk_rbtree_find_offset (tree_view->priv->tree, y, &tree, &node);
14013       if (node)
14014         *end_path = _gtk_tree_path_new_from_rbtree (tree, node);
14015       else
14016         retval = FALSE;
14017     }
14018
14019   return retval;
14020 }
14021
14022 /**
14023  * gtk_tree_view_is_blank_at_pos:
14024  * @tree_view: A #GtkTreeView
14025  * @x: The x position to be identified (relative to bin_window)
14026  * @y: The y position to be identified (relative to bin_window)
14027  * @path: (out) (allow-none): A pointer to a #GtkTreePath pointer to be filled in, or %NULL
14028  * @column: (out) (allow-none): A pointer to a #GtkTreeViewColumn pointer to be filled in, or %NULL
14029  * @cell_x: (out) (allow-none): A pointer where the X coordinate relative to the cell can be placed, or %NULL
14030  * @cell_y: (out) (allow-none): A pointer where the Y coordinate relative to the cell can be placed, or %NULL
14031  *
14032  * Determine whether the point (@x, @y) in @tree_view is blank, that is no
14033  * cell content nor an expander arrow is drawn at the location. If so, the
14034  * location can be considered as the background. You might wish to take
14035  * special action on clicks on the background, such as clearing a current
14036  * selection, having a custom context menu or starting rubber banding.
14037  *
14038  * The @x and @y coordinate that are provided must be relative to bin_window
14039  * coordinates.  That is, @x and @y must come from an event on @tree_view
14040  * where <literal>event->window == gtk_tree_view_get_bin_window (<!-- -->)</literal>.
14041  *
14042  * For converting widget coordinates (eg. the ones you get from
14043  * GtkWidget::query-tooltip), please see
14044  * gtk_tree_view_convert_widget_to_bin_window_coords().
14045  *
14046  * The @path, @column, @cell_x and @cell_y arguments will be filled in
14047  * likewise as for gtk_tree_view_get_path_at_pos().  Please see
14048  * gtk_tree_view_get_path_at_pos() for more information.
14049  *
14050  * Return value: %TRUE if the area at the given coordinates is blank,
14051  * %FALSE otherwise.
14052  *
14053  * Since: 3.0
14054  */
14055 gboolean
14056 gtk_tree_view_is_blank_at_pos (GtkTreeView       *tree_view,
14057                                gint                x,
14058                                gint                y,
14059                                GtkTreePath       **path,
14060                                GtkTreeViewColumn **column,
14061                                gint               *cell_x,
14062                                gint               *cell_y)
14063 {
14064   GtkRBTree *tree;
14065   GtkRBNode *node;
14066   GtkTreeIter iter;
14067   GtkTreePath *real_path;
14068   GtkTreeViewColumn *real_column;
14069   GdkRectangle cell_area, background_area;
14070
14071   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), FALSE);
14072
14073   if (!gtk_tree_view_get_path_at_pos (tree_view, x, y,
14074                                       &real_path, &real_column,
14075                                       cell_x, cell_y))
14076     /* If there's no path here, it is blank */
14077     return TRUE;
14078
14079   if (path)
14080     *path = real_path;
14081
14082   if (column)
14083     *column = real_column;
14084
14085   gtk_tree_model_get_iter (tree_view->priv->model, &iter, real_path);
14086   _gtk_tree_view_find_node (tree_view, real_path, &tree, &node);
14087
14088   /* Check if there's an expander arrow at (x, y) */
14089   if (real_column == tree_view->priv->expander_column
14090       && gtk_tree_view_draw_expanders (tree_view))
14091     {
14092       gboolean over_arrow;
14093
14094       over_arrow = coords_are_over_arrow (tree_view, tree, node, x, y);
14095
14096       if (over_arrow)
14097         {
14098           if (!path)
14099             gtk_tree_path_free (real_path);
14100           return FALSE;
14101         }
14102     }
14103
14104   /* Otherwise, have the column see if there's a cell at (x, y) */
14105   gtk_tree_view_column_cell_set_cell_data (real_column,
14106                                            tree_view->priv->model,
14107                                            &iter,
14108                                            GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_PARENT),
14109                                            node->children ? TRUE : FALSE);
14110
14111   gtk_tree_view_get_background_area (tree_view, real_path, real_column,
14112                                      &background_area);
14113   gtk_tree_view_get_cell_area (tree_view, real_path, real_column,
14114                                &cell_area);
14115
14116   if (!path)
14117     gtk_tree_path_free (real_path);
14118
14119   return _gtk_tree_view_column_is_blank_at_pos (real_column,
14120                                                 &cell_area,
14121                                                 &background_area,
14122                                                 x, y);
14123 }
14124
14125 static void
14126 unset_reorderable (GtkTreeView *tree_view)
14127 {
14128   if (tree_view->priv->reorderable)
14129     {
14130       tree_view->priv->reorderable = FALSE;
14131       g_object_notify (G_OBJECT (tree_view), "reorderable");
14132     }
14133 }
14134
14135 /**
14136  * gtk_tree_view_enable_model_drag_source:
14137  * @tree_view: a #GtkTreeView
14138  * @start_button_mask: Mask of allowed buttons to start drag
14139  * @targets: (array length=n_targets): the table of targets that the drag will support
14140  * @n_targets: the number of items in @targets
14141  * @actions: the bitmask of possible actions for a drag from this
14142  *    widget
14143  *
14144  * Turns @tree_view into a drag source for automatic DND. Calling this
14145  * method sets #GtkTreeView:reorderable to %FALSE.
14146  **/
14147 void
14148 gtk_tree_view_enable_model_drag_source (GtkTreeView              *tree_view,
14149                                         GdkModifierType           start_button_mask,
14150                                         const GtkTargetEntry     *targets,
14151                                         gint                      n_targets,
14152                                         GdkDragAction             actions)
14153 {
14154   TreeViewDragInfo *di;
14155
14156   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
14157
14158   gtk_drag_source_set (GTK_WIDGET (tree_view),
14159                        0,
14160                        targets,
14161                        n_targets,
14162                        actions);
14163
14164   di = ensure_info (tree_view);
14165
14166   di->start_button_mask = start_button_mask;
14167   di->source_actions = actions;
14168   di->source_set = TRUE;
14169
14170   unset_reorderable (tree_view);
14171 }
14172
14173 /**
14174  * gtk_tree_view_enable_model_drag_dest:
14175  * @tree_view: a #GtkTreeView
14176  * @targets: (array length=n_targets): the table of targets that
14177  *           the drag will support
14178  * @n_targets: the number of items in @targets
14179  * @actions: the bitmask of possible actions for a drag from this
14180  *    widget
14181  *
14182  * Turns @tree_view into a drop destination for automatic DND. Calling
14183  * this method sets #GtkTreeView:reorderable to %FALSE.
14184  **/
14185 void
14186 gtk_tree_view_enable_model_drag_dest (GtkTreeView              *tree_view,
14187                                       const GtkTargetEntry     *targets,
14188                                       gint                      n_targets,
14189                                       GdkDragAction             actions)
14190 {
14191   TreeViewDragInfo *di;
14192
14193   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
14194
14195   gtk_drag_dest_set (GTK_WIDGET (tree_view),
14196                      0,
14197                      targets,
14198                      n_targets,
14199                      actions);
14200
14201   di = ensure_info (tree_view);
14202   di->dest_set = TRUE;
14203
14204   unset_reorderable (tree_view);
14205 }
14206
14207 /**
14208  * gtk_tree_view_unset_rows_drag_source:
14209  * @tree_view: a #GtkTreeView
14210  *
14211  * Undoes the effect of
14212  * gtk_tree_view_enable_model_drag_source(). Calling this method sets
14213  * #GtkTreeView:reorderable to %FALSE.
14214  **/
14215 void
14216 gtk_tree_view_unset_rows_drag_source (GtkTreeView *tree_view)
14217 {
14218   TreeViewDragInfo *di;
14219
14220   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
14221
14222   di = get_info (tree_view);
14223
14224   if (di)
14225     {
14226       if (di->source_set)
14227         {
14228           gtk_drag_source_unset (GTK_WIDGET (tree_view));
14229           di->source_set = FALSE;
14230         }
14231
14232       if (!di->dest_set && !di->source_set)
14233         remove_info (tree_view);
14234     }
14235
14236   unset_reorderable (tree_view);
14237 }
14238
14239 /**
14240  * gtk_tree_view_unset_rows_drag_dest:
14241  * @tree_view: a #GtkTreeView
14242  *
14243  * Undoes the effect of
14244  * gtk_tree_view_enable_model_drag_dest(). Calling this method sets
14245  * #GtkTreeView:reorderable to %FALSE.
14246  **/
14247 void
14248 gtk_tree_view_unset_rows_drag_dest (GtkTreeView *tree_view)
14249 {
14250   TreeViewDragInfo *di;
14251
14252   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
14253
14254   di = get_info (tree_view);
14255
14256   if (di)
14257     {
14258       if (di->dest_set)
14259         {
14260           gtk_drag_dest_unset (GTK_WIDGET (tree_view));
14261           di->dest_set = FALSE;
14262         }
14263
14264       if (!di->dest_set && !di->source_set)
14265         remove_info (tree_view);
14266     }
14267
14268   unset_reorderable (tree_view);
14269 }
14270
14271 /**
14272  * gtk_tree_view_set_drag_dest_row:
14273  * @tree_view: a #GtkTreeView
14274  * @path: (allow-none): The path of the row to highlight, or %NULL
14275  * @pos: Specifies whether to drop before, after or into the row
14276  *
14277  * Sets the row that is highlighted for feedback.
14278  * If @path is %NULL, an existing highlight is removed.
14279  */
14280 void
14281 gtk_tree_view_set_drag_dest_row (GtkTreeView            *tree_view,
14282                                  GtkTreePath            *path,
14283                                  GtkTreeViewDropPosition pos)
14284 {
14285   GtkTreePath *current_dest;
14286
14287   /* Note; this function is exported to allow a custom DND
14288    * implementation, so it can't touch TreeViewDragInfo
14289    */
14290
14291   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
14292
14293   current_dest = NULL;
14294
14295   if (tree_view->priv->drag_dest_row)
14296     {
14297       current_dest = gtk_tree_row_reference_get_path (tree_view->priv->drag_dest_row);
14298       gtk_tree_row_reference_free (tree_view->priv->drag_dest_row);
14299     }
14300
14301   /* special case a drop on an empty model */
14302   tree_view->priv->empty_view_drop = 0;
14303
14304   if (pos == GTK_TREE_VIEW_DROP_BEFORE && path
14305       && gtk_tree_path_get_depth (path) == 1
14306       && gtk_tree_path_get_indices (path)[0] == 0)
14307     {
14308       gint n_children;
14309
14310       n_children = gtk_tree_model_iter_n_children (tree_view->priv->model,
14311                                                    NULL);
14312
14313       if (!n_children)
14314         tree_view->priv->empty_view_drop = 1;
14315     }
14316
14317   tree_view->priv->drag_dest_pos = pos;
14318
14319   if (path)
14320     {
14321       tree_view->priv->drag_dest_row =
14322         gtk_tree_row_reference_new_proxy (G_OBJECT (tree_view), tree_view->priv->model, path);
14323       gtk_tree_view_queue_draw_path (tree_view, path, NULL);
14324     }
14325   else
14326     tree_view->priv->drag_dest_row = NULL;
14327
14328   if (current_dest)
14329     {
14330       GtkRBTree *tree, *new_tree;
14331       GtkRBNode *node, *new_node;
14332
14333       _gtk_tree_view_find_node (tree_view, current_dest, &tree, &node);
14334       _gtk_tree_view_queue_draw_node (tree_view, tree, node, NULL);
14335
14336       if (tree && node)
14337         {
14338           _gtk_rbtree_next_full (tree, node, &new_tree, &new_node);
14339           if (new_tree && new_node)
14340             _gtk_tree_view_queue_draw_node (tree_view, new_tree, new_node, NULL);
14341
14342           _gtk_rbtree_prev_full (tree, node, &new_tree, &new_node);
14343           if (new_tree && new_node)
14344             _gtk_tree_view_queue_draw_node (tree_view, new_tree, new_node, NULL);
14345         }
14346       gtk_tree_path_free (current_dest);
14347     }
14348 }
14349
14350 /**
14351  * gtk_tree_view_get_drag_dest_row:
14352  * @tree_view: a #GtkTreeView
14353  * @path: (out) (allow-none): Return location for the path of the highlighted row, or %NULL.
14354  * @pos: (out) (allow-none): Return location for the drop position, or %NULL
14355  *
14356  * Gets information about the row that is highlighted for feedback.
14357  **/
14358 void
14359 gtk_tree_view_get_drag_dest_row (GtkTreeView              *tree_view,
14360                                  GtkTreePath             **path,
14361                                  GtkTreeViewDropPosition  *pos)
14362 {
14363   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
14364
14365   if (path)
14366     {
14367       if (tree_view->priv->drag_dest_row)
14368         *path = gtk_tree_row_reference_get_path (tree_view->priv->drag_dest_row);
14369       else
14370         {
14371           if (tree_view->priv->empty_view_drop)
14372             *path = gtk_tree_path_new_from_indices (0, -1);
14373           else
14374             *path = NULL;
14375         }
14376     }
14377
14378   if (pos)
14379     *pos = tree_view->priv->drag_dest_pos;
14380 }
14381
14382 /**
14383  * gtk_tree_view_get_dest_row_at_pos:
14384  * @tree_view: a #GtkTreeView
14385  * @drag_x: the position to determine the destination row for
14386  * @drag_y: the position to determine the destination row for
14387  * @path: (out) (allow-none): Return location for the path of the highlighted row, or %NULL.
14388  * @pos: (out) (allow-none): Return location for the drop position, or %NULL
14389  *
14390  * Determines the destination row for a given position.  @drag_x and
14391  * @drag_y are expected to be in widget coordinates.  This function is only
14392  * meaningful if @tree_view is realized.  Therefore this function will always
14393  * return %FALSE if @tree_view is not realized or does not have a model.
14394  *
14395  * Return value: whether there is a row at the given position, %TRUE if this
14396  * is indeed the case.
14397  **/
14398 gboolean
14399 gtk_tree_view_get_dest_row_at_pos (GtkTreeView             *tree_view,
14400                                    gint                     drag_x,
14401                                    gint                     drag_y,
14402                                    GtkTreePath            **path,
14403                                    GtkTreeViewDropPosition *pos)
14404 {
14405   gint cell_y;
14406   gint bin_x, bin_y;
14407   gdouble offset_into_row;
14408   gdouble third;
14409   GdkRectangle cell;
14410   GtkTreeViewColumn *column = NULL;
14411   GtkTreePath *tmp_path = NULL;
14412
14413   /* Note; this function is exported to allow a custom DND
14414    * implementation, so it can't touch TreeViewDragInfo
14415    */
14416
14417   g_return_val_if_fail (tree_view != NULL, FALSE);
14418   g_return_val_if_fail (drag_x >= 0, FALSE);
14419   g_return_val_if_fail (drag_y >= 0, FALSE);
14420
14421   if (path)
14422     *path = NULL;
14423
14424   if (tree_view->priv->bin_window == NULL)
14425     return FALSE;
14426
14427   if (tree_view->priv->tree == NULL)
14428     return FALSE;
14429
14430   /* If in the top third of a row, we drop before that row; if
14431    * in the bottom third, drop after that row; if in the middle,
14432    * and the row has children, drop into the row.
14433    */
14434   gtk_tree_view_convert_widget_to_bin_window_coords (tree_view, drag_x, drag_y,
14435                                                      &bin_x, &bin_y);
14436
14437   if (!gtk_tree_view_get_path_at_pos (tree_view,
14438                                       bin_x,
14439                                       bin_y,
14440                                       &tmp_path,
14441                                       &column,
14442                                       NULL,
14443                                       &cell_y))
14444     return FALSE;
14445
14446   gtk_tree_view_get_background_area (tree_view, tmp_path, column,
14447                                      &cell);
14448
14449   offset_into_row = cell_y;
14450
14451   if (path)
14452     *path = tmp_path;
14453   else
14454     gtk_tree_path_free (tmp_path);
14455
14456   tmp_path = NULL;
14457
14458   third = cell.height / 3.0;
14459
14460   if (pos)
14461     {
14462       if (offset_into_row < third)
14463         {
14464           *pos = GTK_TREE_VIEW_DROP_BEFORE;
14465         }
14466       else if (offset_into_row < (cell.height / 2.0))
14467         {
14468           *pos = GTK_TREE_VIEW_DROP_INTO_OR_BEFORE;
14469         }
14470       else if (offset_into_row < third * 2.0)
14471         {
14472           *pos = GTK_TREE_VIEW_DROP_INTO_OR_AFTER;
14473         }
14474       else
14475         {
14476           *pos = GTK_TREE_VIEW_DROP_AFTER;
14477         }
14478     }
14479
14480   return TRUE;
14481 }
14482
14483
14484
14485 /* KEEP IN SYNC WITH GTK_TREE_VIEW_BIN_EXPOSE */
14486 /**
14487  * gtk_tree_view_create_row_drag_icon:
14488  * @tree_view: a #GtkTreeView
14489  * @path: a #GtkTreePath in @tree_view
14490  *
14491  * Creates a #cairo_surface_t representation of the row at @path.
14492  * This image is used for a drag icon.
14493  *
14494  * Return value: (transfer full): a newly-allocated surface of the drag icon.
14495  **/
14496 cairo_surface_t *
14497 gtk_tree_view_create_row_drag_icon (GtkTreeView  *tree_view,
14498                                     GtkTreePath  *path)
14499 {
14500   GtkTreeIter   iter;
14501   GtkRBTree    *tree;
14502   GtkRBNode    *node;
14503   GtkStyleContext *context;
14504   GtkStateFlags state;
14505   gint cell_offset;
14506   GList *list;
14507   GdkRectangle background_area;
14508   GtkWidget *widget;
14509   gint depth;
14510   /* start drawing inside the black outline */
14511   gint x = 1, y = 1;
14512   cairo_surface_t *surface;
14513   gint bin_window_width;
14514   gboolean is_separator = FALSE;
14515   gboolean rtl, allow_rules;
14516   cairo_t *cr;
14517
14518   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), NULL);
14519   g_return_val_if_fail (path != NULL, NULL);
14520
14521   widget = GTK_WIDGET (tree_view);
14522
14523   if (!gtk_widget_get_realized (widget))
14524     return NULL;
14525
14526   depth = gtk_tree_path_get_depth (path);
14527
14528   _gtk_tree_view_find_node (tree_view,
14529                             path,
14530                             &tree,
14531                             &node);
14532
14533   if (tree == NULL)
14534     return NULL;
14535
14536   if (!gtk_tree_model_get_iter (tree_view->priv->model,
14537                                 &iter,
14538                                 path))
14539     return NULL;
14540
14541   context = gtk_widget_get_style_context (widget);
14542
14543   gtk_style_context_save (context);
14544
14545   state = gtk_widget_get_state_flags (widget);
14546   gtk_style_context_set_state (context, state);
14547
14548   gtk_style_context_add_class (context, GTK_STYLE_CLASS_VIEW);
14549   gtk_style_context_add_region (context, GTK_STYLE_REGION_COLUMN, 0);
14550
14551   gtk_widget_style_get (widget,
14552                         "allow-rules", &allow_rules,
14553                         NULL);
14554
14555   if (allow_rules && tree_view->priv->has_rules)
14556     {
14557       GtkRegionFlags row_flags;
14558
14559       if ((_gtk_rbtree_node_get_index (tree, node) % 2))
14560         row_flags = GTK_REGION_ODD;
14561       else
14562         row_flags = GTK_REGION_EVEN;
14563
14564       gtk_style_context_add_region (context, GTK_STYLE_REGION_ROW, row_flags);
14565     }
14566
14567   is_separator = row_is_separator (tree_view, &iter, NULL);
14568
14569   cell_offset = x;
14570
14571   background_area.y = y;
14572   background_area.height = gtk_tree_view_get_row_height (tree_view, node);
14573
14574   bin_window_width = gdk_window_get_width (tree_view->priv->bin_window);
14575
14576   surface = gdk_window_create_similar_surface (tree_view->priv->bin_window,
14577                                                CAIRO_CONTENT_COLOR,
14578                                                bin_window_width + 2,
14579                                                background_area.height + 2);
14580
14581   cr = cairo_create (surface);
14582
14583   gtk_render_background (context, cr, 0, 0,
14584                          bin_window_width + 2,
14585                          background_area.height + 2);
14586
14587   rtl = gtk_widget_get_direction (GTK_WIDGET (tree_view)) == GTK_TEXT_DIR_RTL;
14588
14589   for (list = (rtl ? g_list_last (tree_view->priv->columns) : g_list_first (tree_view->priv->columns));
14590       list;
14591       list = (rtl ? list->prev : list->next))
14592     {
14593       GtkTreeViewColumn *column = list->data;
14594       GdkRectangle cell_area;
14595       gint vertical_separator;
14596
14597       if (!gtk_tree_view_column_get_visible (column))
14598         continue;
14599
14600       gtk_tree_view_column_cell_set_cell_data (column, tree_view->priv->model, &iter,
14601                                                GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_PARENT),
14602                                                node->children?TRUE:FALSE);
14603
14604       background_area.x = cell_offset;
14605       background_area.width = gtk_tree_view_column_get_width (column);
14606
14607       gtk_widget_style_get (widget,
14608                             "vertical-separator", &vertical_separator,
14609                             NULL);
14610
14611       cell_area = background_area;
14612
14613       cell_area.y += vertical_separator / 2;
14614       cell_area.height -= vertical_separator;
14615
14616       if (gtk_tree_view_is_expander_column (tree_view, column))
14617         {
14618           if (!rtl)
14619             cell_area.x += (depth - 1) * tree_view->priv->level_indentation;
14620           cell_area.width -= (depth - 1) * tree_view->priv->level_indentation;
14621
14622           if (gtk_tree_view_draw_expanders (tree_view))
14623             {
14624               if (!rtl)
14625                 cell_area.x += depth * tree_view->priv->expander_size;
14626               cell_area.width -= depth * tree_view->priv->expander_size;
14627             }
14628         }
14629
14630       if (gtk_tree_view_column_cell_is_visible (column))
14631         {
14632           if (is_separator)
14633             {
14634               gtk_style_context_save (context);
14635               gtk_style_context_add_class (context, GTK_STYLE_CLASS_SEPARATOR);
14636
14637               gtk_render_line (context, cr,
14638                                cell_area.x,
14639                                cell_area.y + cell_area.height / 2,
14640                                cell_area.x + cell_area.width,
14641                                cell_area.y + cell_area.height / 2);
14642
14643               gtk_style_context_restore (context);
14644             }
14645           else
14646             {
14647               _gtk_tree_view_column_cell_render (column,
14648                                                  cr,
14649                                                  &background_area,
14650                                                  &cell_area,
14651                                                  0, FALSE);
14652             }
14653         }
14654       cell_offset += gtk_tree_view_column_get_width (column);
14655     }
14656
14657   cairo_set_source_rgb (cr, 0, 0, 0);
14658   cairo_rectangle (cr,
14659                    0.5, 0.5,
14660                    bin_window_width + 1,
14661                    background_area.height + 1);
14662   cairo_set_line_width (cr, 1.0);
14663   cairo_stroke (cr);
14664
14665   cairo_destroy (cr);
14666
14667   cairo_surface_set_device_offset (surface, 2, 2);
14668
14669   gtk_style_context_restore (context);
14670
14671   return surface;
14672 }
14673
14674
14675 /**
14676  * gtk_tree_view_set_destroy_count_func:
14677  * @tree_view: A #GtkTreeView
14678  * @func: (allow-none): Function to be called when a view row is destroyed, or %NULL
14679  * @data: (allow-none): User data to be passed to @func, or %NULL
14680  * @destroy: (allow-none): Destroy notifier for @data, or %NULL
14681  *
14682  * This function should almost never be used.  It is meant for private use by
14683  * ATK for determining the number of visible children that are removed when the
14684  * user collapses a row, or a row is deleted.
14685  **/
14686 void
14687 gtk_tree_view_set_destroy_count_func (GtkTreeView             *tree_view,
14688                                       GtkTreeDestroyCountFunc  func,
14689                                       gpointer                 data,
14690                                       GDestroyNotify           destroy)
14691 {
14692   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
14693
14694   if (tree_view->priv->destroy_count_destroy)
14695     tree_view->priv->destroy_count_destroy (tree_view->priv->destroy_count_data);
14696
14697   tree_view->priv->destroy_count_func = func;
14698   tree_view->priv->destroy_count_data = data;
14699   tree_view->priv->destroy_count_destroy = destroy;
14700 }
14701
14702
14703 /*
14704  * Interactive search
14705  */
14706
14707 /**
14708  * gtk_tree_view_set_enable_search:
14709  * @tree_view: A #GtkTreeView
14710  * @enable_search: %TRUE, if the user can search interactively
14711  *
14712  * If @enable_search is set, then the user can type in text to search through
14713  * the tree interactively (this is sometimes called "typeahead find").
14714  *
14715  * Note that even if this is %FALSE, the user can still initiate a search
14716  * using the "start-interactive-search" key binding.
14717  */
14718 void
14719 gtk_tree_view_set_enable_search (GtkTreeView *tree_view,
14720                                  gboolean     enable_search)
14721 {
14722   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
14723
14724   enable_search = !!enable_search;
14725
14726   if (tree_view->priv->enable_search != enable_search)
14727     {
14728        tree_view->priv->enable_search = enable_search;
14729        g_object_notify (G_OBJECT (tree_view), "enable-search");
14730     }
14731 }
14732
14733 /**
14734  * gtk_tree_view_get_enable_search:
14735  * @tree_view: A #GtkTreeView
14736  *
14737  * Returns whether or not the tree allows to start interactive searching
14738  * by typing in text.
14739  *
14740  * Return value: whether or not to let the user search interactively
14741  */
14742 gboolean
14743 gtk_tree_view_get_enable_search (GtkTreeView *tree_view)
14744 {
14745   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), FALSE);
14746
14747   return tree_view->priv->enable_search;
14748 }
14749
14750
14751 /**
14752  * gtk_tree_view_get_search_column:
14753  * @tree_view: A #GtkTreeView
14754  *
14755  * Gets the column searched on by the interactive search code.
14756  *
14757  * Return value: the column the interactive search code searches in.
14758  */
14759 gint
14760 gtk_tree_view_get_search_column (GtkTreeView *tree_view)
14761 {
14762   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), -1);
14763
14764   return (tree_view->priv->search_column);
14765 }
14766
14767 /**
14768  * gtk_tree_view_set_search_column:
14769  * @tree_view: A #GtkTreeView
14770  * @column: the column of the model to search in, or -1 to disable searching
14771  *
14772  * Sets @column as the column where the interactive search code should
14773  * search in for the current model.
14774  *
14775  * If the search column is set, users can use the "start-interactive-search"
14776  * key binding to bring up search popup. The enable-search property controls
14777  * whether simply typing text will also start an interactive search.
14778  *
14779  * Note that @column refers to a column of the current model. The search
14780  * column is reset to -1 when the model is changed.
14781  */
14782 void
14783 gtk_tree_view_set_search_column (GtkTreeView *tree_view,
14784                                  gint         column)
14785 {
14786   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
14787   g_return_if_fail (column >= -1);
14788
14789   if (tree_view->priv->search_column == column)
14790     return;
14791
14792   tree_view->priv->search_column = column;
14793   g_object_notify (G_OBJECT (tree_view), "search-column");
14794 }
14795
14796 /**
14797  * gtk_tree_view_get_search_equal_func: (skip)
14798  * @tree_view: A #GtkTreeView
14799  *
14800  * Returns the compare function currently in use.
14801  *
14802  * Return value: the currently used compare function for the search code.
14803  */
14804
14805 GtkTreeViewSearchEqualFunc
14806 gtk_tree_view_get_search_equal_func (GtkTreeView *tree_view)
14807 {
14808   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), NULL);
14809
14810   return tree_view->priv->search_equal_func;
14811 }
14812
14813 /**
14814  * gtk_tree_view_set_search_equal_func:
14815  * @tree_view: A #GtkTreeView
14816  * @search_equal_func: the compare function to use during the search
14817  * @search_user_data: (allow-none): user data to pass to @search_equal_func, or %NULL
14818  * @search_destroy: (allow-none): Destroy notifier for @search_user_data, or %NULL
14819  *
14820  * Sets the compare function for the interactive search capabilities; note
14821  * that somewhat like strcmp() returning 0 for equality
14822  * #GtkTreeViewSearchEqualFunc returns %FALSE on matches.
14823  **/
14824 void
14825 gtk_tree_view_set_search_equal_func (GtkTreeView                *tree_view,
14826                                      GtkTreeViewSearchEqualFunc  search_equal_func,
14827                                      gpointer                    search_user_data,
14828                                      GDestroyNotify              search_destroy)
14829 {
14830   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
14831   g_return_if_fail (search_equal_func != NULL);
14832
14833   if (tree_view->priv->search_destroy)
14834     tree_view->priv->search_destroy (tree_view->priv->search_user_data);
14835
14836   tree_view->priv->search_equal_func = search_equal_func;
14837   tree_view->priv->search_user_data = search_user_data;
14838   tree_view->priv->search_destroy = search_destroy;
14839   if (tree_view->priv->search_equal_func == NULL)
14840     tree_view->priv->search_equal_func = gtk_tree_view_search_equal_func;
14841 }
14842
14843 /**
14844  * gtk_tree_view_get_search_entry:
14845  * @tree_view: A #GtkTreeView
14846  *
14847  * Returns the #GtkEntry which is currently in use as interactive search
14848  * entry for @tree_view.  In case the built-in entry is being used, %NULL
14849  * will be returned.
14850  *
14851  * Return value: (transfer none): the entry currently in use as search entry.
14852  *
14853  * Since: 2.10
14854  */
14855 GtkEntry *
14856 gtk_tree_view_get_search_entry (GtkTreeView *tree_view)
14857 {
14858   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), NULL);
14859
14860   if (tree_view->priv->search_custom_entry_set)
14861     return GTK_ENTRY (tree_view->priv->search_entry);
14862
14863   return NULL;
14864 }
14865
14866 /**
14867  * gtk_tree_view_set_search_entry:
14868  * @tree_view: A #GtkTreeView
14869  * @entry: (allow-none): the entry the interactive search code of @tree_view should use or %NULL
14870  *
14871  * Sets the entry which the interactive search code will use for this
14872  * @tree_view.  This is useful when you want to provide a search entry
14873  * in our interface at all time at a fixed position.  Passing %NULL for
14874  * @entry will make the interactive search code use the built-in popup
14875  * entry again.
14876  *
14877  * Since: 2.10
14878  */
14879 void
14880 gtk_tree_view_set_search_entry (GtkTreeView *tree_view,
14881                                 GtkEntry    *entry)
14882 {
14883   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
14884   g_return_if_fail (entry == NULL || GTK_IS_ENTRY (entry));
14885
14886   if (tree_view->priv->search_custom_entry_set)
14887     {
14888       if (tree_view->priv->search_entry_changed_id)
14889         {
14890           g_signal_handler_disconnect (tree_view->priv->search_entry,
14891                                        tree_view->priv->search_entry_changed_id);
14892           tree_view->priv->search_entry_changed_id = 0;
14893         }
14894       g_signal_handlers_disconnect_by_func (tree_view->priv->search_entry,
14895                                             G_CALLBACK (gtk_tree_view_search_key_press_event),
14896                                             tree_view);
14897
14898       g_object_unref (tree_view->priv->search_entry);
14899     }
14900   else if (tree_view->priv->search_window)
14901     {
14902       gtk_widget_destroy (tree_view->priv->search_window);
14903
14904       tree_view->priv->search_window = NULL;
14905     }
14906
14907   if (entry)
14908     {
14909       tree_view->priv->search_entry = g_object_ref (entry);
14910       tree_view->priv->search_custom_entry_set = TRUE;
14911
14912       if (tree_view->priv->search_entry_changed_id == 0)
14913         {
14914           tree_view->priv->search_entry_changed_id =
14915             g_signal_connect (tree_view->priv->search_entry, "changed",
14916                               G_CALLBACK (gtk_tree_view_search_init),
14917                               tree_view);
14918         }
14919
14920         g_signal_connect (tree_view->priv->search_entry, "key-press-event",
14921                           G_CALLBACK (gtk_tree_view_search_key_press_event),
14922                           tree_view);
14923
14924         gtk_tree_view_search_init (tree_view->priv->search_entry, tree_view);
14925     }
14926   else
14927     {
14928       tree_view->priv->search_entry = NULL;
14929       tree_view->priv->search_custom_entry_set = FALSE;
14930     }
14931 }
14932
14933 /**
14934  * gtk_tree_view_set_search_position_func:
14935  * @tree_view: A #GtkTreeView
14936  * @func: (allow-none): the function to use to position the search dialog, or %NULL
14937  *    to use the default search position function
14938  * @data: (allow-none): user data to pass to @func, or %NULL
14939  * @destroy: (allow-none): Destroy notifier for @data, or %NULL
14940  *
14941  * Sets the function to use when positioning the search dialog.
14942  *
14943  * Since: 2.10
14944  **/
14945 void
14946 gtk_tree_view_set_search_position_func (GtkTreeView                   *tree_view,
14947                                         GtkTreeViewSearchPositionFunc  func,
14948                                         gpointer                       user_data,
14949                                         GDestroyNotify                 destroy)
14950 {
14951   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
14952
14953   if (tree_view->priv->search_position_destroy)
14954     tree_view->priv->search_position_destroy (tree_view->priv->search_position_user_data);
14955
14956   tree_view->priv->search_position_func = func;
14957   tree_view->priv->search_position_user_data = user_data;
14958   tree_view->priv->search_position_destroy = destroy;
14959   if (tree_view->priv->search_position_func == NULL)
14960     tree_view->priv->search_position_func = gtk_tree_view_search_position_func;
14961 }
14962
14963 /**
14964  * gtk_tree_view_get_search_position_func: (skip)
14965  * @tree_view: A #GtkTreeView
14966  *
14967  * Returns the positioning function currently in use.
14968  *
14969  * Return value: the currently used function for positioning the search dialog.
14970  *
14971  * Since: 2.10
14972  */
14973 GtkTreeViewSearchPositionFunc
14974 gtk_tree_view_get_search_position_func (GtkTreeView *tree_view)
14975 {
14976   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), NULL);
14977
14978   return tree_view->priv->search_position_func;
14979 }
14980
14981
14982 static void
14983 gtk_tree_view_search_dialog_hide (GtkWidget   *search_dialog,
14984                                   GtkTreeView *tree_view,
14985                                   GdkDevice   *device)
14986 {
14987   if (tree_view->priv->disable_popdown)
14988     return;
14989
14990   if (tree_view->priv->search_entry_changed_id)
14991     {
14992       g_signal_handler_disconnect (tree_view->priv->search_entry,
14993                                    tree_view->priv->search_entry_changed_id);
14994       tree_view->priv->search_entry_changed_id = 0;
14995     }
14996   if (tree_view->priv->typeselect_flush_timeout)
14997     {
14998       g_source_remove (tree_view->priv->typeselect_flush_timeout);
14999       tree_view->priv->typeselect_flush_timeout = 0;
15000     }
15001
15002   if (gtk_widget_get_visible (search_dialog))
15003     {
15004       /* send focus-in event */
15005       send_focus_change (GTK_WIDGET (tree_view->priv->search_entry), device, FALSE);
15006       gtk_widget_hide (search_dialog);
15007       gtk_entry_set_text (GTK_ENTRY (tree_view->priv->search_entry), "");
15008       send_focus_change (GTK_WIDGET (tree_view), device, TRUE);
15009     }
15010 }
15011
15012 static void
15013 gtk_tree_view_search_position_func (GtkTreeView *tree_view,
15014                                     GtkWidget   *search_dialog,
15015                                     gpointer     user_data)
15016 {
15017   gint x, y;
15018   gint tree_x, tree_y;
15019   gint tree_width, tree_height;
15020   GdkWindow *tree_window = gtk_widget_get_window (GTK_WIDGET (tree_view));
15021   GdkScreen *screen = gdk_window_get_screen (tree_window);
15022   GtkRequisition requisition;
15023   gint monitor_num;
15024   GdkRectangle monitor;
15025
15026   monitor_num = gdk_screen_get_monitor_at_window (screen, tree_window);
15027   gdk_screen_get_monitor_geometry (screen, monitor_num, &monitor);
15028
15029   gtk_widget_realize (search_dialog);
15030
15031   gdk_window_get_origin (tree_window, &tree_x, &tree_y);
15032   tree_width = gdk_window_get_width (tree_window);
15033   tree_height = gdk_window_get_height (tree_window);
15034   gtk_widget_get_preferred_size (search_dialog, &requisition, NULL);
15035
15036   if (tree_x + tree_width > gdk_screen_get_width (screen))
15037     x = gdk_screen_get_width (screen) - requisition.width;
15038   else if (tree_x + tree_width - requisition.width < 0)
15039     x = 0;
15040   else
15041     x = tree_x + tree_width - requisition.width;
15042
15043   if (tree_y + tree_height + requisition.height > gdk_screen_get_height (screen))
15044     y = gdk_screen_get_height (screen) - requisition.height;
15045   else if (tree_y + tree_height < 0) /* isn't really possible ... */
15046     y = 0;
15047   else
15048     y = tree_y + tree_height;
15049
15050   gtk_window_move (GTK_WINDOW (search_dialog), x, y);
15051 }
15052
15053 static void
15054 gtk_tree_view_search_disable_popdown (GtkEntry *entry,
15055                                       GtkMenu  *menu,
15056                                       gpointer  data)
15057 {
15058   GtkTreeView *tree_view = (GtkTreeView *)data;
15059
15060   tree_view->priv->disable_popdown = 1;
15061   g_signal_connect (menu, "hide",
15062                     G_CALLBACK (gtk_tree_view_search_enable_popdown), data);
15063 }
15064
15065 /* Because we're visible but offscreen, we just set a flag in the preedit
15066  * callback.
15067  */
15068 static void
15069 gtk_tree_view_search_preedit_changed (GtkIMContext *im_context,
15070                                       GtkTreeView  *tree_view)
15071 {
15072   tree_view->priv->imcontext_changed = 1;
15073   if (tree_view->priv->typeselect_flush_timeout)
15074     {
15075       g_source_remove (tree_view->priv->typeselect_flush_timeout);
15076       tree_view->priv->typeselect_flush_timeout =
15077         gdk_threads_add_timeout (GTK_TREE_VIEW_SEARCH_DIALOG_TIMEOUT,
15078                        (GSourceFunc) gtk_tree_view_search_entry_flush_timeout,
15079                        tree_view);
15080     }
15081
15082 }
15083
15084 static void
15085 gtk_tree_view_search_activate (GtkEntry    *entry,
15086                                GtkTreeView *tree_view)
15087 {
15088   GtkTreePath *path;
15089
15090   gtk_tree_view_search_dialog_hide (tree_view->priv->search_window,
15091                                     tree_view,
15092                                     gtk_get_current_event_device ());
15093
15094   /* If we have a row selected and it's the cursor row, we activate
15095    * the row XXX */
15096   if (tree_view->priv->cursor_node &&
15097       GTK_RBNODE_FLAG_SET (tree_view->priv->cursor_node, GTK_RBNODE_IS_SELECTED))
15098     {
15099       path = _gtk_tree_path_new_from_rbtree (tree_view->priv->cursor_tree,
15100                                              tree_view->priv->cursor_node);
15101
15102       gtk_tree_view_row_activated (tree_view, path, tree_view->priv->focus_column);
15103
15104       gtk_tree_path_free (path);
15105     }
15106 }
15107
15108 static gboolean
15109 gtk_tree_view_real_search_enable_popdown (gpointer data)
15110 {
15111   GtkTreeView *tree_view = (GtkTreeView *)data;
15112
15113   tree_view->priv->disable_popdown = 0;
15114
15115   return FALSE;
15116 }
15117
15118 static void
15119 gtk_tree_view_search_enable_popdown (GtkWidget *widget,
15120                                      gpointer   data)
15121 {
15122   gdk_threads_add_timeout_full (G_PRIORITY_HIGH, 200, gtk_tree_view_real_search_enable_popdown, g_object_ref (data), g_object_unref);
15123 }
15124
15125 static gboolean
15126 gtk_tree_view_search_delete_event (GtkWidget *widget,
15127                                    GdkEventAny *event,
15128                                    GtkTreeView *tree_view)
15129 {
15130   g_return_val_if_fail (GTK_IS_WIDGET (widget), FALSE);
15131
15132   gtk_tree_view_search_dialog_hide (widget, tree_view, NULL);
15133
15134   return TRUE;
15135 }
15136
15137 static gboolean
15138 gtk_tree_view_search_button_press_event (GtkWidget *widget,
15139                                          GdkEventButton *event,
15140                                          GtkTreeView *tree_view)
15141 {
15142   GdkDevice *keyb_device;
15143
15144   g_return_val_if_fail (GTK_IS_WIDGET (widget), FALSE);
15145
15146   keyb_device = gdk_device_get_associated_device (event->device);
15147   gtk_tree_view_search_dialog_hide (widget, tree_view, keyb_device);
15148
15149   if (event->window == tree_view->priv->bin_window)
15150     gtk_tree_view_button_press (GTK_WIDGET (tree_view), event);
15151
15152   return TRUE;
15153 }
15154
15155 static gboolean
15156 gtk_tree_view_search_scroll_event (GtkWidget *widget,
15157                                    GdkEventScroll *event,
15158                                    GtkTreeView *tree_view)
15159 {
15160   gboolean retval = FALSE;
15161
15162   if (event->direction == GDK_SCROLL_UP)
15163     {
15164       gtk_tree_view_search_move (widget, tree_view, TRUE);
15165       retval = TRUE;
15166     }
15167   else if (event->direction == GDK_SCROLL_DOWN)
15168     {
15169       gtk_tree_view_search_move (widget, tree_view, FALSE);
15170       retval = TRUE;
15171     }
15172
15173   /* renew the flush timeout */
15174   if (retval && tree_view->priv->typeselect_flush_timeout
15175       && !tree_view->priv->search_custom_entry_set)
15176     {
15177       g_source_remove (tree_view->priv->typeselect_flush_timeout);
15178       tree_view->priv->typeselect_flush_timeout =
15179         gdk_threads_add_timeout (GTK_TREE_VIEW_SEARCH_DIALOG_TIMEOUT,
15180                        (GSourceFunc) gtk_tree_view_search_entry_flush_timeout,
15181                        tree_view);
15182     }
15183
15184   return retval;
15185 }
15186
15187 static gboolean
15188 gtk_tree_view_search_key_press_event (GtkWidget *widget,
15189                                       GdkEventKey *event,
15190                                       GtkTreeView *tree_view)
15191 {
15192   GdkModifierType default_accel;
15193   gboolean        retval = FALSE;
15194
15195   g_return_val_if_fail (GTK_IS_WIDGET (widget), FALSE);
15196   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), FALSE);
15197
15198   /* close window and cancel the search */
15199   if (!tree_view->priv->search_custom_entry_set
15200       && (event->keyval == GDK_KEY_Escape ||
15201           event->keyval == GDK_KEY_Tab ||
15202             event->keyval == GDK_KEY_KP_Tab ||
15203             event->keyval == GDK_KEY_ISO_Left_Tab))
15204     {
15205       gtk_tree_view_search_dialog_hide (widget, tree_view,
15206                                         gdk_event_get_device ((GdkEvent *) event));
15207       return TRUE;
15208     }
15209
15210   default_accel = gtk_widget_get_modifier_mask (widget,
15211                                                 GDK_MODIFIER_INTENT_PRIMARY_ACCELERATOR);
15212
15213   /* select previous matching iter */
15214   if (event->keyval == GDK_KEY_Up || event->keyval == GDK_KEY_KP_Up)
15215     {
15216       if (!gtk_tree_view_search_move (widget, tree_view, TRUE))
15217         gtk_widget_error_bell (widget);
15218
15219       retval = TRUE;
15220     }
15221
15222   if (((event->state & (default_accel | GDK_SHIFT_MASK)) == (default_accel | GDK_SHIFT_MASK))
15223       && (event->keyval == GDK_KEY_g || event->keyval == GDK_KEY_G))
15224     {
15225       if (!gtk_tree_view_search_move (widget, tree_view, TRUE))
15226         gtk_widget_error_bell (widget);
15227
15228       retval = TRUE;
15229     }
15230
15231   /* select next matching iter */
15232   if (event->keyval == GDK_KEY_Down || event->keyval == GDK_KEY_KP_Down)
15233     {
15234       if (!gtk_tree_view_search_move (widget, tree_view, FALSE))
15235         gtk_widget_error_bell (widget);
15236
15237       retval = TRUE;
15238     }
15239
15240   if (((event->state & (default_accel | GDK_SHIFT_MASK)) == default_accel)
15241       && (event->keyval == GDK_KEY_g || event->keyval == GDK_KEY_G))
15242     {
15243       if (!gtk_tree_view_search_move (widget, tree_view, FALSE))
15244         gtk_widget_error_bell (widget);
15245
15246       retval = TRUE;
15247     }
15248
15249   /* renew the flush timeout */
15250   if (retval && tree_view->priv->typeselect_flush_timeout
15251       && !tree_view->priv->search_custom_entry_set)
15252     {
15253       g_source_remove (tree_view->priv->typeselect_flush_timeout);
15254       tree_view->priv->typeselect_flush_timeout =
15255         gdk_threads_add_timeout (GTK_TREE_VIEW_SEARCH_DIALOG_TIMEOUT,
15256                        (GSourceFunc) gtk_tree_view_search_entry_flush_timeout,
15257                        tree_view);
15258     }
15259
15260   return retval;
15261 }
15262
15263 /*  this function returns FALSE if there is a search string but
15264  *  nothing was found, and TRUE otherwise.
15265  */
15266 static gboolean
15267 gtk_tree_view_search_move (GtkWidget   *window,
15268                            GtkTreeView *tree_view,
15269                            gboolean     up)
15270 {
15271   gboolean ret;
15272   gint len;
15273   gint count = 0;
15274   const gchar *text;
15275   GtkTreeIter iter;
15276   GtkTreeModel *model;
15277   GtkTreeSelection *selection;
15278
15279   text = gtk_entry_get_text (GTK_ENTRY (tree_view->priv->search_entry));
15280
15281   g_return_val_if_fail (text != NULL, FALSE);
15282
15283   len = strlen (text);
15284
15285   if (up && tree_view->priv->selected_iter == 1)
15286     return strlen (text) < 1;
15287
15288   len = strlen (text);
15289
15290   if (len < 1)
15291     return TRUE;
15292
15293   model = gtk_tree_view_get_model (tree_view);
15294   selection = gtk_tree_view_get_selection (tree_view);
15295
15296   /* search */
15297   gtk_tree_selection_unselect_all (selection);
15298   if (!gtk_tree_model_get_iter_first (model, &iter))
15299     return TRUE;
15300
15301   ret = gtk_tree_view_search_iter (model, selection, &iter, text,
15302                                    &count, up?((tree_view->priv->selected_iter) - 1):((tree_view->priv->selected_iter + 1)));
15303
15304   if (ret)
15305     {
15306       /* found */
15307       tree_view->priv->selected_iter += up?(-1):(1);
15308       return TRUE;
15309     }
15310   else
15311     {
15312       /* return to old iter */
15313       count = 0;
15314       gtk_tree_model_get_iter_first (model, &iter);
15315       gtk_tree_view_search_iter (model, selection,
15316                                  &iter, text,
15317                                  &count, tree_view->priv->selected_iter);
15318       return FALSE;
15319     }
15320 }
15321
15322 static gboolean
15323 gtk_tree_view_search_equal_func (GtkTreeModel *model,
15324                                  gint          column,
15325                                  const gchar  *key,
15326                                  GtkTreeIter  *iter,
15327                                  gpointer      search_data)
15328 {
15329   gboolean retval = TRUE;
15330   const gchar *str;
15331   gchar *normalized_string;
15332   gchar *normalized_key;
15333   gchar *case_normalized_string = NULL;
15334   gchar *case_normalized_key = NULL;
15335   GValue value = G_VALUE_INIT;
15336   GValue transformed = G_VALUE_INIT;
15337
15338   gtk_tree_model_get_value (model, iter, column, &value);
15339
15340   g_value_init (&transformed, G_TYPE_STRING);
15341
15342   if (!g_value_transform (&value, &transformed))
15343     {
15344       g_value_unset (&value);
15345       return TRUE;
15346     }
15347
15348   g_value_unset (&value);
15349
15350   str = g_value_get_string (&transformed);
15351   if (!str)
15352     {
15353       g_value_unset (&transformed);
15354       return TRUE;
15355     }
15356
15357   normalized_string = g_utf8_normalize (str, -1, G_NORMALIZE_ALL);
15358   normalized_key = g_utf8_normalize (key, -1, G_NORMALIZE_ALL);
15359
15360   if (normalized_string && normalized_key)
15361     {
15362       case_normalized_string = g_utf8_casefold (normalized_string, -1);
15363       case_normalized_key = g_utf8_casefold (normalized_key, -1);
15364
15365       if (strncmp (case_normalized_key, case_normalized_string, strlen (case_normalized_key)) == 0)
15366         retval = FALSE;
15367     }
15368
15369   g_value_unset (&transformed);
15370   g_free (normalized_key);
15371   g_free (normalized_string);
15372   g_free (case_normalized_key);
15373   g_free (case_normalized_string);
15374
15375   return retval;
15376 }
15377
15378 static gboolean
15379 gtk_tree_view_search_iter (GtkTreeModel     *model,
15380                            GtkTreeSelection *selection,
15381                            GtkTreeIter      *iter,
15382                            const gchar      *text,
15383                            gint             *count,
15384                            gint              n)
15385 {
15386   GtkRBTree *tree = NULL;
15387   GtkRBNode *node = NULL;
15388   GtkTreePath *path;
15389
15390   GtkTreeView *tree_view = gtk_tree_selection_get_tree_view (selection);
15391
15392   path = gtk_tree_model_get_path (model, iter);
15393   _gtk_tree_view_find_node (tree_view, path, &tree, &node);
15394
15395   do
15396     {
15397       if (! tree_view->priv->search_equal_func (model, tree_view->priv->search_column, text, iter, tree_view->priv->search_user_data))
15398         {
15399           (*count)++;
15400           if (*count == n)
15401             {
15402               gtk_tree_view_scroll_to_cell (tree_view, path, NULL,
15403                                             TRUE, 0.5, 0.0);
15404               gtk_tree_selection_select_iter (selection, iter);
15405               gtk_tree_view_real_set_cursor (tree_view, path, CLAMP_NODE);
15406
15407               if (path)
15408                 gtk_tree_path_free (path);
15409
15410               return TRUE;
15411             }
15412         }
15413
15414       if (node->children)
15415         {
15416           gboolean has_child;
15417           GtkTreeIter tmp;
15418
15419           tree = node->children;
15420           node = _gtk_rbtree_first (tree);
15421
15422           tmp = *iter;
15423           has_child = gtk_tree_model_iter_children (model, iter, &tmp);
15424           gtk_tree_path_down (path);
15425
15426           /* sanity check */
15427           TREE_VIEW_INTERNAL_ASSERT (has_child, FALSE);
15428         }
15429       else
15430         {
15431           gboolean done = FALSE;
15432
15433           do
15434             {
15435               node = _gtk_rbtree_next (tree, node);
15436
15437               if (node)
15438                 {
15439                   gboolean has_next;
15440
15441                   has_next = gtk_tree_model_iter_next (model, iter);
15442
15443                   done = TRUE;
15444                   gtk_tree_path_next (path);
15445
15446                   /* sanity check */
15447                   TREE_VIEW_INTERNAL_ASSERT (has_next, FALSE);
15448                 }
15449               else
15450                 {
15451                   gboolean has_parent;
15452                   GtkTreeIter tmp_iter = *iter;
15453
15454                   node = tree->parent_node;
15455                   tree = tree->parent_tree;
15456
15457                   if (!tree)
15458                     {
15459                       if (path)
15460                         gtk_tree_path_free (path);
15461
15462                       /* we've run out of tree, done with this func */
15463                       return FALSE;
15464                     }
15465
15466                   has_parent = gtk_tree_model_iter_parent (model,
15467                                                            iter,
15468                                                            &tmp_iter);
15469                   gtk_tree_path_up (path);
15470
15471                   /* sanity check */
15472                   TREE_VIEW_INTERNAL_ASSERT (has_parent, FALSE);
15473                 }
15474             }
15475           while (!done);
15476         }
15477     }
15478   while (1);
15479
15480   return FALSE;
15481 }
15482
15483 static void
15484 gtk_tree_view_search_init (GtkWidget   *entry,
15485                            GtkTreeView *tree_view)
15486 {
15487   gint ret;
15488   gint count = 0;
15489   const gchar *text;
15490   GtkTreeIter iter;
15491   GtkTreeModel *model;
15492   GtkTreeSelection *selection;
15493
15494   g_return_if_fail (GTK_IS_ENTRY (entry));
15495   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
15496
15497   text = gtk_entry_get_text (GTK_ENTRY (entry));
15498
15499   model = gtk_tree_view_get_model (tree_view);
15500   selection = gtk_tree_view_get_selection (tree_view);
15501
15502   /* search */
15503   gtk_tree_selection_unselect_all (selection);
15504   if (tree_view->priv->typeselect_flush_timeout
15505       && !tree_view->priv->search_custom_entry_set)
15506     {
15507       g_source_remove (tree_view->priv->typeselect_flush_timeout);
15508       tree_view->priv->typeselect_flush_timeout =
15509         gdk_threads_add_timeout (GTK_TREE_VIEW_SEARCH_DIALOG_TIMEOUT,
15510                        (GSourceFunc) gtk_tree_view_search_entry_flush_timeout,
15511                        tree_view);
15512     }
15513
15514   if (*text == '\0')
15515     return;
15516
15517   if (!gtk_tree_model_get_iter_first (model, &iter))
15518     return;
15519
15520   ret = gtk_tree_view_search_iter (model, selection,
15521                                    &iter, text,
15522                                    &count, 1);
15523
15524   if (ret)
15525     tree_view->priv->selected_iter = 1;
15526 }
15527
15528 void
15529 _gtk_tree_view_remove_editable (GtkTreeView       *tree_view,
15530                                 GtkTreeViewColumn *column,
15531                                 GtkCellEditable   *cell_editable)
15532 {
15533   if (tree_view->priv->edited_column == NULL)
15534     return;
15535
15536   g_return_if_fail (column == tree_view->priv->edited_column);
15537
15538   tree_view->priv->edited_column = NULL;
15539
15540   if (gtk_widget_has_focus (GTK_WIDGET (cell_editable)))
15541     gtk_widget_grab_focus (GTK_WIDGET (tree_view));
15542
15543   gtk_container_remove (GTK_CONTAINER (tree_view),
15544                         GTK_WIDGET (cell_editable));
15545
15546   /* FIXME should only redraw a single node */
15547   gtk_widget_queue_draw (GTK_WIDGET (tree_view));
15548 }
15549
15550 static gboolean
15551 gtk_tree_view_start_editing (GtkTreeView *tree_view,
15552                              GtkTreePath *cursor_path,
15553                              gboolean     edit_only)
15554 {
15555   GtkTreeIter iter;
15556   GdkRectangle cell_area;
15557   GtkTreeViewColumn *focus_column;
15558   guint flags = 0; /* can be 0, as the flags are primarily for rendering */
15559   gint retval = FALSE;
15560   GtkRBTree *cursor_tree;
15561   GtkRBNode *cursor_node;
15562
15563   g_assert (tree_view->priv->focus_column);
15564   focus_column = tree_view->priv->focus_column;
15565
15566   if (!gtk_widget_get_realized (GTK_WIDGET (tree_view)))
15567     return FALSE;
15568
15569   if (_gtk_tree_view_find_node (tree_view, cursor_path, &cursor_tree, &cursor_node) ||
15570       cursor_node == NULL)
15571     return FALSE;
15572
15573   gtk_tree_model_get_iter (tree_view->priv->model, &iter, cursor_path);
15574
15575   validate_row (tree_view, cursor_tree, cursor_node, &iter, cursor_path);
15576
15577   gtk_tree_view_column_cell_set_cell_data (focus_column,
15578                                            tree_view->priv->model,
15579                                            &iter,
15580                                            GTK_RBNODE_FLAG_SET (cursor_node, GTK_RBNODE_IS_PARENT),
15581                                            cursor_node->children ? TRUE : FALSE);
15582   gtk_tree_view_get_cell_area (tree_view,
15583                                cursor_path,
15584                                focus_column,
15585                                &cell_area);
15586
15587   if (gtk_cell_area_activate (gtk_cell_layout_get_area (GTK_CELL_LAYOUT (focus_column)),
15588                               _gtk_tree_view_column_get_context (focus_column),
15589                               GTK_WIDGET (tree_view),
15590                               &cell_area,
15591                               flags, edit_only))
15592     retval = TRUE;
15593
15594   return retval;
15595 }
15596
15597 void
15598 _gtk_tree_view_add_editable (GtkTreeView       *tree_view,
15599                              GtkTreeViewColumn *column,
15600                              GtkTreePath       *path,
15601                              GtkCellEditable   *cell_editable,
15602                              GdkRectangle      *cell_area)
15603 {
15604   gint pre_val = gtk_adjustment_get_value (tree_view->priv->vadjustment);
15605   GtkRequisition requisition;
15606
15607   tree_view->priv->edited_column = column;
15608
15609   gtk_tree_view_real_set_cursor (tree_view, path, CLAMP_NODE);
15610   cell_area->y += pre_val - (int)gtk_adjustment_get_value (tree_view->priv->vadjustment);
15611
15612   gtk_widget_get_preferred_size (GTK_WIDGET (cell_editable),
15613                                  &requisition, NULL);
15614
15615   tree_view->priv->draw_keyfocus = TRUE;
15616
15617   if (requisition.height < cell_area->height)
15618     {
15619       gint diff = cell_area->height - requisition.height;
15620       gtk_tree_view_put (tree_view,
15621                          GTK_WIDGET (cell_editable),
15622                          cell_area->x, cell_area->y + diff/2,
15623                          cell_area->width, requisition.height);
15624     }
15625   else
15626     {
15627       gtk_tree_view_put (tree_view,
15628                          GTK_WIDGET (cell_editable),
15629                          cell_area->x, cell_area->y,
15630                          cell_area->width, cell_area->height);
15631     }
15632 }
15633
15634 static void
15635 gtk_tree_view_stop_editing (GtkTreeView *tree_view,
15636                             gboolean     cancel_editing)
15637 {
15638   GtkTreeViewColumn *column;
15639
15640   if (tree_view->priv->edited_column == NULL)
15641     return;
15642
15643   /*
15644    * This is very evil. We need to do this, because
15645    * gtk_cell_editable_editing_done may trigger gtk_tree_view_row_changed
15646    * later on. If gtk_tree_view_row_changed notices
15647    * tree_view->priv->edited_column != NULL, it'll call
15648    * gtk_tree_view_stop_editing again. Bad things will happen then.
15649    *
15650    * Please read that again if you intend to modify anything here.
15651    */
15652
15653   column = tree_view->priv->edited_column;
15654   gtk_cell_area_stop_editing (gtk_cell_layout_get_area (GTK_CELL_LAYOUT (column)), cancel_editing);
15655   tree_view->priv->edited_column = NULL;
15656 }
15657
15658
15659 /**
15660  * gtk_tree_view_set_hover_selection:
15661  * @tree_view: a #GtkTreeView
15662  * @hover: %TRUE to enable hover selection mode
15663  *
15664  * Enables or disables the hover selection mode of @tree_view.
15665  * Hover selection makes the selected row follow the pointer.
15666  * Currently, this works only for the selection modes
15667  * %GTK_SELECTION_SINGLE and %GTK_SELECTION_BROWSE.
15668  *
15669  * Since: 2.6
15670  **/
15671 void
15672 gtk_tree_view_set_hover_selection (GtkTreeView *tree_view,
15673                                    gboolean     hover)
15674 {
15675   hover = hover != FALSE;
15676
15677   if (hover != tree_view->priv->hover_selection)
15678     {
15679       tree_view->priv->hover_selection = hover;
15680
15681       g_object_notify (G_OBJECT (tree_view), "hover-selection");
15682     }
15683 }
15684
15685 /**
15686  * gtk_tree_view_get_hover_selection:
15687  * @tree_view: a #GtkTreeView
15688  *
15689  * Returns whether hover selection mode is turned on for @tree_view.
15690  *
15691  * Return value: %TRUE if @tree_view is in hover selection mode
15692  *
15693  * Since: 2.6
15694  **/
15695 gboolean
15696 gtk_tree_view_get_hover_selection (GtkTreeView *tree_view)
15697 {
15698   return tree_view->priv->hover_selection;
15699 }
15700
15701 /**
15702  * gtk_tree_view_set_hover_expand:
15703  * @tree_view: a #GtkTreeView
15704  * @expand: %TRUE to enable hover selection mode
15705  *
15706  * Enables of disables the hover expansion mode of @tree_view.
15707  * Hover expansion makes rows expand or collapse if the pointer
15708  * moves over them.
15709  *
15710  * Since: 2.6
15711  **/
15712 void
15713 gtk_tree_view_set_hover_expand (GtkTreeView *tree_view,
15714                                 gboolean     expand)
15715 {
15716   expand = expand != FALSE;
15717
15718   if (expand != tree_view->priv->hover_expand)
15719     {
15720       tree_view->priv->hover_expand = expand;
15721
15722       g_object_notify (G_OBJECT (tree_view), "hover-expand");
15723     }
15724 }
15725
15726 /**
15727  * gtk_tree_view_get_hover_expand:
15728  * @tree_view: a #GtkTreeView
15729  *
15730  * Returns whether hover expansion mode is turned on for @tree_view.
15731  *
15732  * Return value: %TRUE if @tree_view is in hover expansion mode
15733  *
15734  * Since: 2.6
15735  **/
15736 gboolean
15737 gtk_tree_view_get_hover_expand (GtkTreeView *tree_view)
15738 {
15739   return tree_view->priv->hover_expand;
15740 }
15741
15742 /**
15743  * gtk_tree_view_set_rubber_banding:
15744  * @tree_view: a #GtkTreeView
15745  * @enable: %TRUE to enable rubber banding
15746  *
15747  * Enables or disables rubber banding in @tree_view.  If the selection mode
15748  * is #GTK_SELECTION_MULTIPLE, rubber banding will allow the user to select
15749  * multiple rows by dragging the mouse.
15750  *
15751  * Since: 2.10
15752  **/
15753 void
15754 gtk_tree_view_set_rubber_banding (GtkTreeView *tree_view,
15755                                   gboolean     enable)
15756 {
15757   enable = enable != FALSE;
15758
15759   if (enable != tree_view->priv->rubber_banding_enable)
15760     {
15761       tree_view->priv->rubber_banding_enable = enable;
15762
15763       g_object_notify (G_OBJECT (tree_view), "rubber-banding");
15764     }
15765 }
15766
15767 /**
15768  * gtk_tree_view_get_rubber_banding:
15769  * @tree_view: a #GtkTreeView
15770  *
15771  * Returns whether rubber banding is turned on for @tree_view.  If the
15772  * selection mode is #GTK_SELECTION_MULTIPLE, rubber banding will allow the
15773  * user to select multiple rows by dragging the mouse.
15774  *
15775  * Return value: %TRUE if rubber banding in @tree_view is enabled.
15776  *
15777  * Since: 2.10
15778  **/
15779 gboolean
15780 gtk_tree_view_get_rubber_banding (GtkTreeView *tree_view)
15781 {
15782   return tree_view->priv->rubber_banding_enable;
15783 }
15784
15785 /**
15786  * gtk_tree_view_is_rubber_banding_active:
15787  * @tree_view: a #GtkTreeView
15788  *
15789  * Returns whether a rubber banding operation is currently being done
15790  * in @tree_view.
15791  *
15792  * Return value: %TRUE if a rubber banding operation is currently being
15793  * done in @tree_view.
15794  *
15795  * Since: 2.12
15796  **/
15797 gboolean
15798 gtk_tree_view_is_rubber_banding_active (GtkTreeView *tree_view)
15799 {
15800   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), FALSE);
15801
15802   if (tree_view->priv->rubber_banding_enable
15803       && tree_view->priv->rubber_band_status == RUBBER_BAND_ACTIVE)
15804     return TRUE;
15805
15806   return FALSE;
15807 }
15808
15809 /**
15810  * gtk_tree_view_get_row_separator_func: (skip)
15811  * @tree_view: a #GtkTreeView
15812  *
15813  * Returns the current row separator function.
15814  *
15815  * Return value: the current row separator function.
15816  *
15817  * Since: 2.6
15818  **/
15819 GtkTreeViewRowSeparatorFunc
15820 gtk_tree_view_get_row_separator_func (GtkTreeView *tree_view)
15821 {
15822   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), NULL);
15823
15824   return tree_view->priv->row_separator_func;
15825 }
15826
15827 /**
15828  * gtk_tree_view_set_row_separator_func:
15829  * @tree_view: a #GtkTreeView
15830  * @func: (allow-none): a #GtkTreeViewRowSeparatorFunc
15831  * @data: (allow-none): user data to pass to @func, or %NULL
15832  * @destroy: (allow-none): destroy notifier for @data, or %NULL
15833  *
15834  * Sets the row separator function, which is used to determine
15835  * whether a row should be drawn as a separator. If the row separator
15836  * function is %NULL, no separators are drawn. This is the default value.
15837  *
15838  * Since: 2.6
15839  **/
15840 void
15841 gtk_tree_view_set_row_separator_func (GtkTreeView                 *tree_view,
15842                                       GtkTreeViewRowSeparatorFunc  func,
15843                                       gpointer                     data,
15844                                       GDestroyNotify               destroy)
15845 {
15846   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
15847
15848   if (tree_view->priv->row_separator_destroy)
15849     tree_view->priv->row_separator_destroy (tree_view->priv->row_separator_data);
15850
15851   tree_view->priv->row_separator_func = func;
15852   tree_view->priv->row_separator_data = data;
15853   tree_view->priv->row_separator_destroy = destroy;
15854
15855   /* Have the tree recalculate heights */
15856   _gtk_rbtree_mark_invalid (tree_view->priv->tree);
15857   gtk_widget_queue_resize (GTK_WIDGET (tree_view));
15858 }
15859
15860
15861 static void
15862 gtk_tree_view_grab_notify (GtkWidget *widget,
15863                            gboolean   was_grabbed)
15864 {
15865   GtkTreeView *tree_view = GTK_TREE_VIEW (widget);
15866
15867   tree_view->priv->in_grab = !was_grabbed;
15868
15869   if (!was_grabbed)
15870     {
15871       tree_view->priv->pressed_button = -1;
15872
15873       if (tree_view->priv->rubber_band_status)
15874         gtk_tree_view_stop_rubber_band (tree_view);
15875     }
15876 }
15877
15878 static void
15879 gtk_tree_view_state_flags_changed (GtkWidget     *widget,
15880                                    GtkStateFlags  previous_state)
15881 {
15882   if (gtk_widget_get_realized (widget))
15883     gtk_tree_view_ensure_background (GTK_TREE_VIEW (widget));
15884
15885   gtk_widget_queue_draw (widget);
15886 }
15887
15888 /**
15889  * gtk_tree_view_get_grid_lines:
15890  * @tree_view: a #GtkTreeView
15891  *
15892  * Returns which grid lines are enabled in @tree_view.
15893  *
15894  * Return value: a #GtkTreeViewGridLines value indicating which grid lines
15895  * are enabled.
15896  *
15897  * Since: 2.10
15898  */
15899 GtkTreeViewGridLines
15900 gtk_tree_view_get_grid_lines (GtkTreeView *tree_view)
15901 {
15902   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), 0);
15903
15904   return tree_view->priv->grid_lines;
15905 }
15906
15907 /**
15908  * gtk_tree_view_set_grid_lines:
15909  * @tree_view: a #GtkTreeView
15910  * @grid_lines: a #GtkTreeViewGridLines value indicating which grid lines to
15911  * enable.
15912  *
15913  * Sets which grid lines to draw in @tree_view.
15914  *
15915  * Since: 2.10
15916  */
15917 void
15918 gtk_tree_view_set_grid_lines (GtkTreeView           *tree_view,
15919                               GtkTreeViewGridLines   grid_lines)
15920 {
15921   GtkTreeViewPrivate *priv;
15922   GtkWidget *widget;
15923   GtkTreeViewGridLines old_grid_lines;
15924
15925   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
15926
15927   priv = tree_view->priv;
15928   widget = GTK_WIDGET (tree_view);
15929
15930   old_grid_lines = priv->grid_lines;
15931   priv->grid_lines = grid_lines;
15932
15933   if (gtk_widget_get_realized (widget))
15934     {
15935       if (grid_lines == GTK_TREE_VIEW_GRID_LINES_NONE &&
15936           priv->grid_line_width)
15937         {
15938           priv->grid_line_width = 0;
15939         }
15940
15941       if (grid_lines != GTK_TREE_VIEW_GRID_LINES_NONE &&
15942           !priv->grid_line_width)
15943         {
15944           gint8 *dash_list;
15945
15946           gtk_widget_style_get (widget,
15947                                 "grid-line-width", &priv->grid_line_width,
15948                                 "grid-line-pattern", (gchar *)&dash_list,
15949                                 NULL);
15950
15951           if (dash_list)
15952             {
15953               priv->grid_line_dashes[0] = dash_list[0];
15954               if (dash_list[0])
15955                 priv->grid_line_dashes[1] = dash_list[1];
15956
15957               g_free (dash_list);
15958             }
15959           else
15960             {
15961               priv->grid_line_dashes[0] = 1;
15962               priv->grid_line_dashes[1] = 1;
15963             }
15964         }
15965     }
15966
15967   if (old_grid_lines != grid_lines)
15968     {
15969       gtk_widget_queue_draw (GTK_WIDGET (tree_view));
15970
15971       g_object_notify (G_OBJECT (tree_view), "enable-grid-lines");
15972     }
15973 }
15974
15975 /**
15976  * gtk_tree_view_get_enable_tree_lines:
15977  * @tree_view: a #GtkTreeView.
15978  *
15979  * Returns whether or not tree lines are drawn in @tree_view.
15980  *
15981  * Return value: %TRUE if tree lines are drawn in @tree_view, %FALSE
15982  * otherwise.
15983  *
15984  * Since: 2.10
15985  */
15986 gboolean
15987 gtk_tree_view_get_enable_tree_lines (GtkTreeView *tree_view)
15988 {
15989   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), FALSE);
15990
15991   return tree_view->priv->tree_lines_enabled;
15992 }
15993
15994 /**
15995  * gtk_tree_view_set_enable_tree_lines:
15996  * @tree_view: a #GtkTreeView
15997  * @enabled: %TRUE to enable tree line drawing, %FALSE otherwise.
15998  *
15999  * Sets whether to draw lines interconnecting the expanders in @tree_view.
16000  * This does not have any visible effects for lists.
16001  *
16002  * Since: 2.10
16003  */
16004 void
16005 gtk_tree_view_set_enable_tree_lines (GtkTreeView *tree_view,
16006                                      gboolean     enabled)
16007 {
16008   GtkTreeViewPrivate *priv;
16009   GtkWidget *widget;
16010   gboolean was_enabled;
16011
16012   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
16013
16014   enabled = enabled != FALSE;
16015
16016   priv = tree_view->priv;
16017   widget = GTK_WIDGET (tree_view);
16018
16019   was_enabled = priv->tree_lines_enabled;
16020
16021   priv->tree_lines_enabled = enabled;
16022
16023   if (gtk_widget_get_realized (widget))
16024     {
16025       if (!enabled && priv->tree_line_width)
16026         {
16027           priv->tree_line_width = 0;
16028         }
16029
16030       if (enabled && !priv->tree_line_width)
16031         {
16032           gint8 *dash_list;
16033           gtk_widget_style_get (widget,
16034                                 "tree-line-width", &priv->tree_line_width,
16035                                 "tree-line-pattern", (gchar *)&dash_list,
16036                                 NULL);
16037
16038           if (dash_list)
16039             {
16040               priv->tree_line_dashes[0] = dash_list[0];
16041               if (dash_list[0])
16042                 priv->tree_line_dashes[1] = dash_list[1];
16043
16044               g_free (dash_list);
16045             }
16046           else
16047             {
16048               priv->tree_line_dashes[0] = 1;
16049               priv->tree_line_dashes[1] = 1;
16050             }
16051         }
16052     }
16053
16054   if (was_enabled != enabled)
16055     {
16056       gtk_widget_queue_draw (GTK_WIDGET (tree_view));
16057
16058       g_object_notify (G_OBJECT (tree_view), "enable-tree-lines");
16059     }
16060 }
16061
16062
16063 /**
16064  * gtk_tree_view_set_show_expanders:
16065  * @tree_view: a #GtkTreeView
16066  * @enabled: %TRUE to enable expander drawing, %FALSE otherwise.
16067  *
16068  * Sets whether to draw and enable expanders and indent child rows in
16069  * @tree_view.  When disabled there will be no expanders visible in trees
16070  * and there will be no way to expand and collapse rows by default.  Also
16071  * note that hiding the expanders will disable the default indentation.  You
16072  * can set a custom indentation in this case using
16073  * gtk_tree_view_set_level_indentation().
16074  * This does not have any visible effects for lists.
16075  *
16076  * Since: 2.12
16077  */
16078 void
16079 gtk_tree_view_set_show_expanders (GtkTreeView *tree_view,
16080                                   gboolean     enabled)
16081 {
16082   gboolean was_enabled;
16083
16084   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
16085
16086   enabled = enabled != FALSE;
16087   was_enabled = tree_view->priv->show_expanders;
16088
16089   tree_view->priv->show_expanders = enabled == TRUE;
16090
16091   if (enabled != was_enabled)
16092     gtk_widget_queue_draw (GTK_WIDGET (tree_view));
16093 }
16094
16095 /**
16096  * gtk_tree_view_get_show_expanders:
16097  * @tree_view: a #GtkTreeView.
16098  *
16099  * Returns whether or not expanders are drawn in @tree_view.
16100  *
16101  * Return value: %TRUE if expanders are drawn in @tree_view, %FALSE
16102  * otherwise.
16103  *
16104  * Since: 2.12
16105  */
16106 gboolean
16107 gtk_tree_view_get_show_expanders (GtkTreeView *tree_view)
16108 {
16109   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), FALSE);
16110
16111   return tree_view->priv->show_expanders;
16112 }
16113
16114 /**
16115  * gtk_tree_view_set_level_indentation:
16116  * @tree_view: a #GtkTreeView
16117  * @indentation: the amount, in pixels, of extra indentation in @tree_view.
16118  *
16119  * Sets the amount of extra indentation for child levels to use in @tree_view
16120  * in addition to the default indentation.  The value should be specified in
16121  * pixels, a value of 0 disables this feature and in this case only the default
16122  * indentation will be used.
16123  * This does not have any visible effects for lists.
16124  *
16125  * Since: 2.12
16126  */
16127 void
16128 gtk_tree_view_set_level_indentation (GtkTreeView *tree_view,
16129                                      gint         indentation)
16130 {
16131   tree_view->priv->level_indentation = indentation;
16132
16133   gtk_widget_queue_draw (GTK_WIDGET (tree_view));
16134 }
16135
16136 /**
16137  * gtk_tree_view_get_level_indentation:
16138  * @tree_view: a #GtkTreeView.
16139  *
16140  * Returns the amount, in pixels, of extra indentation for child levels
16141  * in @tree_view.
16142  *
16143  * Return value: the amount of extra indentation for child levels in
16144  * @tree_view.  A return value of 0 means that this feature is disabled.
16145  *
16146  * Since: 2.12
16147  */
16148 gint
16149 gtk_tree_view_get_level_indentation (GtkTreeView *tree_view)
16150 {
16151   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), 0);
16152
16153   return tree_view->priv->level_indentation;
16154 }
16155
16156 /**
16157  * gtk_tree_view_set_tooltip_row:
16158  * @tree_view: a #GtkTreeView
16159  * @tooltip: a #GtkTooltip
16160  * @path: a #GtkTreePath
16161  *
16162  * Sets the tip area of @tooltip to be the area covered by the row at @path.
16163  * See also gtk_tree_view_set_tooltip_column() for a simpler alternative.
16164  * See also gtk_tooltip_set_tip_area().
16165  *
16166  * Since: 2.12
16167  */
16168 void
16169 gtk_tree_view_set_tooltip_row (GtkTreeView *tree_view,
16170                                GtkTooltip  *tooltip,
16171                                GtkTreePath *path)
16172 {
16173   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
16174   g_return_if_fail (GTK_IS_TOOLTIP (tooltip));
16175
16176   gtk_tree_view_set_tooltip_cell (tree_view, tooltip, path, NULL, NULL);
16177 }
16178
16179 /**
16180  * gtk_tree_view_set_tooltip_cell:
16181  * @tree_view: a #GtkTreeView
16182  * @tooltip: a #GtkTooltip
16183  * @path: (allow-none): a #GtkTreePath or %NULL
16184  * @column: (allow-none): a #GtkTreeViewColumn or %NULL
16185  * @cell: (allow-none): a #GtkCellRenderer or %NULL
16186  *
16187  * Sets the tip area of @tooltip to the area @path, @column and @cell have
16188  * in common.  For example if @path is %NULL and @column is set, the tip
16189  * area will be set to the full area covered by @column.  See also
16190  * gtk_tooltip_set_tip_area().
16191  *
16192  * Note that if @path is not specified and @cell is set and part of a column
16193  * containing the expander, the tooltip might not show and hide at the correct
16194  * position.  In such cases @path must be set to the current node under the
16195  * mouse cursor for this function to operate correctly.
16196  *
16197  * See also gtk_tree_view_set_tooltip_column() for a simpler alternative.
16198  *
16199  * Since: 2.12
16200  */
16201 void
16202 gtk_tree_view_set_tooltip_cell (GtkTreeView       *tree_view,
16203                                 GtkTooltip        *tooltip,
16204                                 GtkTreePath       *path,
16205                                 GtkTreeViewColumn *column,
16206                                 GtkCellRenderer   *cell)
16207 {
16208   GtkAllocation allocation;
16209   GdkRectangle rect;
16210
16211   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
16212   g_return_if_fail (GTK_IS_TOOLTIP (tooltip));
16213   g_return_if_fail (column == NULL || GTK_IS_TREE_VIEW_COLUMN (column));
16214   g_return_if_fail (cell == NULL || GTK_IS_CELL_RENDERER (cell));
16215
16216   /* Determine x values. */
16217   if (column && cell)
16218     {
16219       GdkRectangle tmp;
16220       gint start, width;
16221
16222       /* We always pass in path here, whether it is NULL or not.
16223        * For cells in expander columns path must be specified so that
16224        * we can correctly account for the indentation.  This also means
16225        * that the tooltip is constrained vertically by the "Determine y
16226        * values" code below; this is not a real problem since cells actually
16227        * don't stretch vertically in constrast to columns.
16228        */
16229       gtk_tree_view_get_cell_area (tree_view, path, column, &tmp);
16230       gtk_tree_view_column_cell_get_position (column, cell, &start, &width);
16231
16232       gtk_tree_view_convert_bin_window_to_widget_coords (tree_view,
16233                                                          tmp.x + start, 0,
16234                                                          &rect.x, NULL);
16235       rect.width = width;
16236     }
16237   else if (column)
16238     {
16239       GdkRectangle tmp;
16240
16241       gtk_tree_view_get_background_area (tree_view, NULL, column, &tmp);
16242       gtk_tree_view_convert_bin_window_to_widget_coords (tree_view,
16243                                                          tmp.x, 0,
16244                                                          &rect.x, NULL);
16245       rect.width = tmp.width;
16246     }
16247   else
16248     {
16249       gtk_widget_get_allocation (GTK_WIDGET (tree_view), &allocation);
16250       rect.x = 0;
16251       rect.width = allocation.width;
16252     }
16253
16254   /* Determine y values. */
16255   if (path)
16256     {
16257       GdkRectangle tmp;
16258
16259       gtk_tree_view_get_background_area (tree_view, path, NULL, &tmp);
16260       gtk_tree_view_convert_bin_window_to_widget_coords (tree_view,
16261                                                          0, tmp.y,
16262                                                          NULL, &rect.y);
16263       rect.height = tmp.height;
16264     }
16265   else
16266     {
16267       rect.y = 0;
16268       rect.height = gtk_adjustment_get_page_size (tree_view->priv->vadjustment);
16269     }
16270
16271   gtk_tooltip_set_tip_area (tooltip, &rect);
16272 }
16273
16274 /**
16275  * gtk_tree_view_get_tooltip_context:
16276  * @tree_view: a #GtkTreeView
16277  * @x: (inout): the x coordinate (relative to widget coordinates)
16278  * @y: (inout): the y coordinate (relative to widget coordinates)
16279  * @keyboard_tip: whether this is a keyboard tooltip or not
16280  * @model: (out) (allow-none) (transfer none): a pointer to receive a
16281  *         #GtkTreeModel or %NULL
16282  * @path: (out) (allow-none): a pointer to receive a #GtkTreePath or %NULL
16283  * @iter: (out) (allow-none): a pointer to receive a #GtkTreeIter or %NULL
16284  *
16285  * This function is supposed to be used in a #GtkWidget::query-tooltip
16286  * signal handler for #GtkTreeView.  The @x, @y and @keyboard_tip values
16287  * which are received in the signal handler, should be passed to this
16288  * function without modification.
16289  *
16290  * The return value indicates whether there is a tree view row at the given
16291  * coordinates (%TRUE) or not (%FALSE) for mouse tooltips.  For keyboard
16292  * tooltips the row returned will be the cursor row.  When %TRUE, then any of
16293  * @model, @path and @iter which have been provided will be set to point to
16294  * that row and the corresponding model.  @x and @y will always be converted
16295  * to be relative to @tree_view's bin_window if @keyboard_tooltip is %FALSE.
16296  *
16297  * Return value: whether or not the given tooltip context points to a row.
16298  *
16299  * Since: 2.12
16300  */
16301 gboolean
16302 gtk_tree_view_get_tooltip_context (GtkTreeView   *tree_view,
16303                                    gint          *x,
16304                                    gint          *y,
16305                                    gboolean       keyboard_tip,
16306                                    GtkTreeModel **model,
16307                                    GtkTreePath  **path,
16308                                    GtkTreeIter   *iter)
16309 {
16310   GtkTreePath *tmppath = NULL;
16311
16312   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), FALSE);
16313   g_return_val_if_fail (x != NULL, FALSE);
16314   g_return_val_if_fail (y != NULL, FALSE);
16315
16316   if (keyboard_tip)
16317     {
16318       gtk_tree_view_get_cursor (tree_view, &tmppath, NULL);
16319
16320       if (!tmppath)
16321         return FALSE;
16322     }
16323   else
16324     {
16325       gtk_tree_view_convert_widget_to_bin_window_coords (tree_view, *x, *y,
16326                                                          x, y);
16327
16328       if (!gtk_tree_view_get_path_at_pos (tree_view, *x, *y,
16329                                           &tmppath, NULL, NULL, NULL))
16330         return FALSE;
16331     }
16332
16333   if (model)
16334     *model = gtk_tree_view_get_model (tree_view);
16335
16336   if (iter)
16337     gtk_tree_model_get_iter (gtk_tree_view_get_model (tree_view),
16338                              iter, tmppath);
16339
16340   if (path)
16341     *path = tmppath;
16342   else
16343     gtk_tree_path_free (tmppath);
16344
16345   return TRUE;
16346 }
16347
16348 static gboolean
16349 gtk_tree_view_set_tooltip_query_cb (GtkWidget  *widget,
16350                                     gint        x,
16351                                     gint        y,
16352                                     gboolean    keyboard_tip,
16353                                     GtkTooltip *tooltip,
16354                                     gpointer    data)
16355 {
16356   GValue value = G_VALUE_INIT;
16357   GValue transformed = G_VALUE_INIT;
16358   GtkTreeIter iter;
16359   GtkTreePath *path;
16360   GtkTreeModel *model;
16361   GtkTreeView *tree_view = GTK_TREE_VIEW (widget);
16362
16363   if (!gtk_tree_view_get_tooltip_context (GTK_TREE_VIEW (widget),
16364                                           &x, &y,
16365                                           keyboard_tip,
16366                                           &model, &path, &iter))
16367     return FALSE;
16368
16369   gtk_tree_model_get_value (model, &iter,
16370                             tree_view->priv->tooltip_column, &value);
16371
16372   g_value_init (&transformed, G_TYPE_STRING);
16373
16374   if (!g_value_transform (&value, &transformed))
16375     {
16376       g_value_unset (&value);
16377       gtk_tree_path_free (path);
16378
16379       return FALSE;
16380     }
16381
16382   g_value_unset (&value);
16383
16384   if (!g_value_get_string (&transformed))
16385     {
16386       g_value_unset (&transformed);
16387       gtk_tree_path_free (path);
16388
16389       return FALSE;
16390     }
16391
16392   gtk_tooltip_set_markup (tooltip, g_value_get_string (&transformed));
16393   gtk_tree_view_set_tooltip_row (tree_view, tooltip, path);
16394
16395   gtk_tree_path_free (path);
16396   g_value_unset (&transformed);
16397
16398   return TRUE;
16399 }
16400
16401 /**
16402  * gtk_tree_view_set_tooltip_column:
16403  * @tree_view: a #GtkTreeView
16404  * @column: an integer, which is a valid column number for @tree_view's model
16405  *
16406  * If you only plan to have simple (text-only) tooltips on full rows, you
16407  * can use this function to have #GtkTreeView handle these automatically
16408  * for you. @column should be set to the column in @tree_view's model
16409  * containing the tooltip texts, or -1 to disable this feature.
16410  *
16411  * When enabled, #GtkWidget::has-tooltip will be set to %TRUE and
16412  * @tree_view will connect a #GtkWidget::query-tooltip signal handler.
16413  *
16414  * Note that the signal handler sets the text with gtk_tooltip_set_markup(),
16415  * so &amp;, &lt;, etc have to be escaped in the text.
16416  *
16417  * Since: 2.12
16418  */
16419 void
16420 gtk_tree_view_set_tooltip_column (GtkTreeView *tree_view,
16421                                   gint         column)
16422 {
16423   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
16424
16425   if (column == tree_view->priv->tooltip_column)
16426     return;
16427
16428   if (column == -1)
16429     {
16430       g_signal_handlers_disconnect_by_func (tree_view,
16431                                             gtk_tree_view_set_tooltip_query_cb,
16432                                             NULL);
16433       gtk_widget_set_has_tooltip (GTK_WIDGET (tree_view), FALSE);
16434     }
16435   else
16436     {
16437       if (tree_view->priv->tooltip_column == -1)
16438         {
16439           g_signal_connect (tree_view, "query-tooltip",
16440                             G_CALLBACK (gtk_tree_view_set_tooltip_query_cb), NULL);
16441           gtk_widget_set_has_tooltip (GTK_WIDGET (tree_view), TRUE);
16442         }
16443     }
16444
16445   tree_view->priv->tooltip_column = column;
16446   g_object_notify (G_OBJECT (tree_view), "tooltip-column");
16447 }
16448
16449 /**
16450  * gtk_tree_view_get_tooltip_column:
16451  * @tree_view: a #GtkTreeView
16452  *
16453  * Returns the column of @tree_view's model which is being used for
16454  * displaying tooltips on @tree_view's rows.
16455  *
16456  * Return value: the index of the tooltip column that is currently being
16457  * used, or -1 if this is disabled.
16458  *
16459  * Since: 2.12
16460  */
16461 gint
16462 gtk_tree_view_get_tooltip_column (GtkTreeView *tree_view)
16463 {
16464   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), 0);
16465
16466   return tree_view->priv->tooltip_column;
16467 }