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, see <http://www.gnu.org/licenses/>.
  16  */
  17
  18
  19 #include "config.h"
  20
  21 #include <math.h>
  22 #include <string.h>
  23
  24 #include "gtktreeview.h"
  25
  26 #include "gtkadjustment.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 "gtkcssstylepropertyprivate.h"
  52 #include "gtktypebuiltins.h"
  53 #include "gtkmain.h"
  54 #include "gtksettings.h"
  55 #include "gtkwidgetpath.h"
  56 #include "a11y/gtktreeviewaccessibleprivate.h"
  57
  58
  59 /**
  60  * SECTION:gtktreeview
  61  * @Short_description: A widget for displaying both trees and lists
  62  * @Title: GtkTreeView
  63  * @See_also: #GtkTreeViewColumn, #GtkTreeSelection, #GtkTreeDnd, #GtkTreeMode,
  64  *   #GtkTreeSortable, #GtkTreeModelSort, #GtkListStore, #GtkTreeStore,
  65  *   #GtkCellRenderer, #GtkCellEditable, #GtkCellRendererPixbuf,
  66  *   #GtkCellRendererText, #GtkCellRendererToggle
  67  *
  68  * Widget that displays any object that implements the #GtkTreeModel interface.
  69  *
  70  * Please refer to the <link linkend="TreeWidget">tree widget conceptual
  71  * overview</link> for an overview of all the objects and data types related
  72  * to the tree widget and how they work together.
  73  *
  74  * Several different coordinate systems are exposed in the GtkTreeView API.
  75  * These are:
  76  *
  77  * <inlinegraphic fileref="tree-view-coordinates.png" format="PNG"></inlinegraphic>
  78  * <variablelist><title>Coordinate systems in GtkTreeView API</title>
  79  * <varlistentry><term>Widget coordinates</term>
  80  * <listitem>
  81  * <para>
  82  * Coordinates relative to the widget (usually <literal>widget->window</literal>).
  83  * </para>
  84  * </listitem>
  85  * </varlistentry>
  86  * <varlistentry><term>Bin window coordinates</term>
  87  * <listitem>
  88  * <para>
  89  * Coordinates relative to the window that GtkTreeView renders to.
  90  * </para>
  91  * </listitem>
  92  * </varlistentry>
  93  * <varlistentry><term>Tree coordinates</term>
  94  * <listitem>
  95  * <para>
  96  * Coordinates relative to the entire scrollable area of GtkTreeView. These
  97  * coordinates start at (0, 0) for row 0 of the tree.
  98  * </para>
  99  * </listitem>
 100  * </varlistentry>
 101  * </variablelist>
 102  *
 103  * Several functions are available for converting between the different
 104  * coordinate systems.  The most common translations are between widget and bin
 105  * window coordinates and between bin window and tree coordinates. For the
 106  * former you can use gtk_tree_view_convert_widget_to_bin_window_coords()
 107  * (and vice versa), for the latter gtk_tree_view_convert_bin_window_to_tree_coords()
 108  * (and vice versa).
 109  *
 110  * <refsect2 id="GtkTreeView-BUILDER-UI">
 111  * <title>GtkTreeView as GtkBuildable</title>
 112  * The GtkTreeView implementation of the GtkBuildable interface accepts
 113  * #GtkTreeViewColumn objects as &lt;child&gt; elements and exposes the
 114  * internal #GtkTreeSelection in UI definitions.
 115  * <example>
 116  * <title>A UI definition fragment with GtkTreeView</title>
 117  * <programlisting><![CDATA[
 118  * <object class="GtkTreeView" id="treeview">
 119  *   <property name="model">liststore1</property>
 120  *   <child>
 121  *     <object class="GtkTreeViewColumn" id="test-column">
 122  *       <property name="title">Test</property>
 123  *       <child>
 124  *         <object class="GtkCellRendererText" id="test-renderer"/>
 125  *         <attributes>
 126  *           <attribute name="text">1</attribute>
 127  *         </attributes>
 128  *       </child>
 129  *     </object>
 130  *   </child>
 131  *   <child internal-child="selection">
 132  *     <object class="GtkTreeSelection" id="selection">
 133  *       <signal name="changed" handler="on_treeview_selection_changed"/>
 134  *     </object>
 135  *   </child>
 136  * </object>
 137  * ]]></programlisting>
 138  * </example>
 139  * </refsect2>
 140  */
 141
 142 enum
 143 {
 144   DRAG_COLUMN_WINDOW_STATE_UNSET = 0,
 145   DRAG_COLUMN_WINDOW_STATE_ORIGINAL = 1,
 146   DRAG_COLUMN_WINDOW_STATE_ARROW = 2,
 147   DRAG_COLUMN_WINDOW_STATE_ARROW_LEFT = 3,
 148   DRAG_COLUMN_WINDOW_STATE_ARROW_RIGHT = 4
 149 };
 150
 151 enum
 152 {
 153   RUBBER_BAND_OFF = 0,
 154   RUBBER_BAND_MAYBE_START = 1,
 155   RUBBER_BAND_ACTIVE = 2
 156 };
 157
 158 typedef enum {
 159   CLEAR_AND_SELECT = (1 << 0),
 160   CLAMP_NODE       = (1 << 1),
 161   CURSOR_INVALID   = (1 << 2)
 162 } SetCursorFlags;
 163
 164  /* This lovely little value is used to determine how far away from the title bar
 165   * you can move the mouse and still have a column drag work.
 166   */
 167 #define TREE_VIEW_COLUMN_DRAG_DEAD_MULTIPLIER(tree_view) (10*gtk_tree_view_get_effective_header_height(tree_view))
 168
 169 #ifdef __GNUC__
 170
 171 #define TREE_VIEW_INTERNAL_ASSERT(expr, ret)     G_STMT_START{          \
 172      if (!(expr))                                                       \
 173        {                                                                \
 174          g_log (G_LOG_DOMAIN,                                           \
 175                 G_LOG_LEVEL_CRITICAL,                                   \
 176                 "%s (%s): assertion `%s' failed.\n"                     \
 177                 "There is a disparity between the internal view of the GtkTreeView,\n"    \
 178                 "and the GtkTreeModel.  This generally means that the model has changed\n"\
 179                 "without letting the view know.  Any display from now on is likely to\n"  \
 180                 "be incorrect.\n",                                                        \
 181                 G_STRLOC,                                               \
 182                 G_STRFUNC,                                              \
 183                 #expr);                                                 \
 184          return ret;                                                    \
 185        };                               }G_STMT_END
 186
 187 #define TREE_VIEW_INTERNAL_ASSERT_VOID(expr)     G_STMT_START{          \
 188      if (!(expr))                                                       \
 189        {                                                                \
 190          g_log (G_LOG_DOMAIN,                                           \
 191                 G_LOG_LEVEL_CRITICAL,                                   \
 192                 "%s (%s): assertion `%s' failed.\n"                     \
 193                 "There is a disparity between the internal view of the GtkTreeView,\n"    \
 194                 "and the GtkTreeModel.  This generally means that the model has changed\n"\
 195                 "without letting the view know.  Any display from now on is likely to\n"  \
 196                 "be incorrect.\n",                                                        \
 197                 G_STRLOC,                                               \
 198                 G_STRFUNC,                                              \
 199                 #expr);                                                 \
 200          return;                                                        \
 201        };                               }G_STMT_END
 202
 203 #else
 204
 205 #define TREE_VIEW_INTERNAL_ASSERT(expr, ret)     G_STMT_START{          \
 206      if (!(expr))                                                       \
 207        {                                                                \
 208          g_log (G_LOG_DOMAIN,                                           \
 209                 G_LOG_LEVEL_CRITICAL,                                   \
 210                 "file %s: line %d: assertion `%s' failed.\n"       \
 211                 "There is a disparity between the internal view of the GtkTreeView,\n"    \
 212                 "and the GtkTreeModel.  This generally means that the model has changed\n"\
 213                 "without letting the view know.  Any display from now on is likely to\n"  \
 214                 "be incorrect.\n",                                                        \
 215                 __FILE__,                                               \
 216                 __LINE__,                                               \
 217                 #expr);                                                 \
 218          return ret;                                                    \
 219        };                               }G_STMT_END
 220
 221 #define TREE_VIEW_INTERNAL_ASSERT_VOID(expr)     G_STMT_START{          \
 222      if (!(expr))                                                       \
 223        {                                                                \
 224          g_log (G_LOG_DOMAIN,                                           \
 225                 G_LOG_LEVEL_CRITICAL,                                   \
 226                 "file %s: line %d: assertion '%s' failed.\n"            \
 227                 "There is a disparity between the internal view of the GtkTreeView,\n"    \
 228                 "and the GtkTreeModel.  This generally means that the model has changed\n"\
 229                 "without letting the view know.  Any display from now on is likely to\n"  \
 230                 "be incorrect.\n",                                                        \
 231                 __FILE__,                                               \
 232                 __LINE__,                                               \
 233                 #expr);                                                 \
 234          return;                                                        \
 235        };                               }G_STMT_END
 236 #endif
 237
 238 #define GTK_TREE_VIEW_PRIORITY_VALIDATE (GDK_PRIORITY_REDRAW + 5)
 239 #define GTK_TREE_VIEW_PRIORITY_SCROLL_SYNC (GTK_TREE_VIEW_PRIORITY_VALIDATE + 2)
 240 #define GTK_TREE_VIEW_TIME_MS_PER_IDLE 30
 241 #define SCROLL_EDGE_SIZE 15
 242 #define EXPANDER_EXTRA_PADDING 4
 243 #define GTK_TREE_VIEW_SEARCH_DIALOG_TIMEOUT 5000
 244 #define AUTO_EXPAND_TIMEOUT 500
 245
 246 /* Translate from bin_window coordinates to rbtree (tree coordinates) and
 247  * vice versa.
 248  */
 249 #define TREE_WINDOW_Y_TO_RBTREE_Y(tree_view,y) ((y) + tree_view->priv->dy)
 250 #define RBTREE_Y_TO_TREE_WINDOW_Y(tree_view,y) ((y) - tree_view->priv->dy)
 251
 252 typedef struct _GtkTreeViewColumnReorder GtkTreeViewColumnReorder;
 253 struct _GtkTreeViewColumnReorder
 254 {
 255   gint left_align;
 256   gint right_align;
 257   GtkTreeViewColumn *left_column;
 258   GtkTreeViewColumn *right_column;
 259 };
 260
 261 typedef struct _GtkTreeViewChild GtkTreeViewChild;
 262 struct _GtkTreeViewChild
 263 {
 264   GtkWidget *widget;
 265   gint x;
 266   gint y;
 267   gint width;
 268   gint height;
 269 };
 270
 271
 272 typedef struct _TreeViewDragInfo TreeViewDragInfo;
 273 struct _TreeViewDragInfo
 274 {
 275   GdkModifierType start_button_mask;
 276   GtkTargetList *_unused_source_target_list;
 277   GdkDragAction source_actions;
 278
 279   GtkTargetList *_unused_dest_target_list;
 280
 281   guint source_set : 1;
 282   guint dest_set : 1;
 283 };
 284
 285
 286 struct _GtkTreeViewPrivate
 287 {
 288   GtkTreeModel *model;
 289
 290   /* tree information */
 291   GtkRBTree *tree;
 292
 293   /* Container info */
 294   GList *children;
 295   gint width;
 296   gint height;
 297
 298   /* Adjustments */
 299   GtkAdjustment *hadjustment;
 300   GtkAdjustment *vadjustment;
 301   gint           min_display_width;
 302   gint           min_display_height;
 303
 304   /* Sub windows */
 305   GdkWindow *bin_window;
 306   GdkWindow *header_window;
 307
 308   /* Scroll position state keeping */
 309   GtkTreeRowReference *top_row;
 310   gint top_row_dy;
 311   /* dy == y pos of top_row + top_row_dy */
 312   /* we cache it for simplicity of the code */
 313   gint dy;
 314
 315   guint presize_handler_timer;
 316   guint validate_rows_timer;
 317   guint scroll_sync_timer;
 318
 319   /* Indentation and expander layout */
 320   GtkTreeViewColumn *expander_column;
 321
 322   gint level_indentation;
 323
 324   /* Key navigation (focus), selection */
 325   gint cursor_offset;
 326
 327   GtkTreeRowReference *anchor;
 328   GtkRBNode *cursor_node;
 329   GtkRBTree *cursor_tree;
 330
 331   GtkTreeViewColumn *focus_column;
 332
 333   /* Current pressed node, previously pressed, prelight */
 334   GtkRBNode *button_pressed_node;
 335   GtkRBTree *button_pressed_tree;
 336
 337   gint pressed_button;
 338   gint press_start_x;
 339   gint press_start_y;
 340
 341   gint event_last_x;
 342   gint event_last_y;
 343
 344   guint last_button_time;
 345   gint last_button_x;
 346   gint last_button_y;
 347
 348   GtkRBNode *prelight_node;
 349   GtkRBTree *prelight_tree;
 350
 351   /* Cell Editing */
 352   GtkTreeViewColumn *edited_column;
 353
 354   /* The node that's currently being collapsed or expanded */
 355   GtkRBNode *expanded_collapsed_node;
 356   GtkRBTree *expanded_collapsed_tree;
 357   guint expand_collapse_timeout;
 358
 359   /* Auto expand/collapse timeout in hover mode */
 360   guint auto_expand_timeout;
 361
 362   /* Selection information */
 363   GtkTreeSelection *selection;
 364
 365   /* Header information */
 366   gint n_columns;
 367   GList *columns;
 368   gint header_height;
 369
 370   GtkTreeViewColumnDropFunc column_drop_func;
 371   gpointer column_drop_func_data;
 372   GDestroyNotify column_drop_func_data_destroy;
 373   GList *column_drag_info;
 374   GtkTreeViewColumnReorder *cur_reorder;
 375
 376   gint prev_width_before_expander;
 377
 378   /* Interactive Header reordering */
 379   GdkWindow *drag_window;
 380   GdkWindow *drag_highlight_window;
 381   GtkTreeViewColumn *drag_column;
 382   gint drag_column_x;
 383
 384   /* Interactive Header Resizing */
 385   gint drag_pos;
 386   gint x_drag;
 387
 388   /* Column width allocation */
 389   gint minimum_width;
 390   gint natural_width;
 391   gint n_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 activate_on_single_click : 1;
 466   guint reorderable : 1;
 467   guint header_has_focus : 1;
 468   guint drag_column_window_state : 3;
 469   /* hint to display rows in alternating colors */
 470   guint has_rules : 1;
 471   guint mark_rows_col_dirty : 1;
 472
 473   /* for DnD */
 474   guint empty_view_drop : 1;
 475
 476   guint modify_selection_pressed : 1;
 477   guint extend_selection_pressed : 1;
 478
 479   guint init_hadjust_value : 1;
 480
 481   guint in_top_row_to_dy : 1;
 482
 483   /* interactive search */
 484   guint enable_search : 1;
 485   guint disable_popdown : 1;
 486   guint search_custom_entry_set : 1;
 487
 488   guint hover_selection : 1;
 489   guint hover_expand : 1;
 490   guint imcontext_changed : 1;
 491
 492   guint rubber_banding_enable : 1;
 493
 494   guint in_grab : 1;
 495
 496   /* Whether our key press handler is to avoid sending an unhandled binding to the search entry */
 497   guint search_entry_avoid_unhandled_binding : 1;
 498
 499   /* GtkScrollablePolicy needs to be checked when
 500    * driving the scrollable adjustment values */
 501   guint hscroll_policy : 1;
 502   guint vscroll_policy : 1;
 503
 504   /* GtkTreeView flags */
 505   guint is_list : 1;
 506   guint show_expanders : 1;
 507   guint in_column_resize : 1;
 508   guint arrow_prelit : 1;
 509   guint headers_visible : 1;
 510   guint draw_keyfocus : 1;
 511   guint model_setup : 1;
 512   guint in_column_drag : 1;
 513 };
 514
 515
 516 /* Signals */
 517 enum
 518 {
 519   ROW_ACTIVATED,
 520   TEST_EXPAND_ROW,
 521   TEST_COLLAPSE_ROW,
 522   ROW_EXPANDED,
 523   ROW_COLLAPSED,
 524   COLUMNS_CHANGED,
 525   CURSOR_CHANGED,
 526   MOVE_CURSOR,
 527   SELECT_ALL,
 528   UNSELECT_ALL,
 529   SELECT_CURSOR_ROW,
 530   TOGGLE_CURSOR_ROW,
 531   EXPAND_COLLAPSE_CURSOR_ROW,
 532   SELECT_CURSOR_PARENT,
 533   START_INTERACTIVE_SEARCH,
 534   LAST_SIGNAL
 535 };
 536
 537 /* Properties */
 538 enum {
 539   PROP_0,
 540   PROP_MODEL,
 541   PROP_HADJUSTMENT,
 542   PROP_VADJUSTMENT,
 543   PROP_HSCROLL_POLICY,
 544   PROP_VSCROLL_POLICY,
 545   PROP_HEADERS_VISIBLE,
 546   PROP_HEADERS_CLICKABLE,
 547   PROP_EXPANDER_COLUMN,
 548   PROP_REORDERABLE,
 549   PROP_RULES_HINT,
 550   PROP_ENABLE_SEARCH,
 551   PROP_SEARCH_COLUMN,
 552   PROP_FIXED_HEIGHT_MODE,
 553   PROP_HOVER_SELECTION,
 554   PROP_HOVER_EXPAND,
 555   PROP_SHOW_EXPANDERS,
 556   PROP_LEVEL_INDENTATION,
 557   PROP_RUBBER_BANDING,
 558   PROP_ENABLE_GRID_LINES,
 559   PROP_ENABLE_TREE_LINES,
 560   PROP_TOOLTIP_COLUMN,
 561   PROP_ACTIVATE_ON_SINGLE_CLICK
 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_allocate        (GtkWidget        *widget,
 587                                                     GtkAllocation    *allocation);
 588 static gboolean gtk_tree_view_draw                 (GtkWidget        *widget,
 589                                                     cairo_t          *cr);
 590 static gboolean gtk_tree_view_key_press            (GtkWidget        *widget,
 591                                                     GdkEventKey      *event);
 592 static gboolean gtk_tree_view_key_release          (GtkWidget        *widget,
 593                                                     GdkEventKey      *event);
 594 static gboolean gtk_tree_view_motion               (GtkWidget        *widget,
 595                                                     GdkEventMotion   *event);
 596 static gboolean gtk_tree_view_enter_notify         (GtkWidget        *widget,
 597                                                     GdkEventCrossing *event);
 598 static gboolean gtk_tree_view_leave_notify         (GtkWidget        *widget,
 599                                                     GdkEventCrossing *event);
 600 static gboolean gtk_tree_view_button_press         (GtkWidget        *widget,
 601                                                     GdkEventButton   *event);
 602 static gboolean gtk_tree_view_button_release       (GtkWidget        *widget,
 603                                                     GdkEventButton   *event);
 604 static gboolean gtk_tree_view_grab_broken          (GtkWidget          *widget,
 605                                                     GdkEventGrabBroken *event);
 606 #if 0
 607 static gboolean gtk_tree_view_configure            (GtkWidget         *widget,
 608                                                     GdkEventConfigure *event);
 609 #endif
 610
 611 static GtkWidgetPath * gtk_tree_view_get_path_for_child (GtkContainer *container,
 612                                                          GtkWidget    *child);
 613
 614 static void     gtk_tree_view_set_focus_child      (GtkContainer     *container,
 615                                                     GtkWidget        *child);
 616 static gint     gtk_tree_view_focus_out            (GtkWidget        *widget,
 617                                                     GdkEventFocus    *event);
 618 static gint     gtk_tree_view_focus                (GtkWidget        *widget,
 619                                                     GtkDirectionType  direction);
 620 static void     gtk_tree_view_grab_focus           (GtkWidget        *widget);
 621 static void     gtk_tree_view_style_updated        (GtkWidget        *widget);
 622 static void     gtk_tree_view_grab_notify          (GtkWidget        *widget,
 623                                                     gboolean          was_grabbed);
 624 static void     gtk_tree_view_state_flags_changed  (GtkWidget        *widget,
 625                                                     GtkStateFlags     previous_state);
 626
 627 /* container signals */
 628 static void     gtk_tree_view_remove               (GtkContainer     *container,
 629                                                     GtkWidget        *widget);
 630 static void     gtk_tree_view_forall               (GtkContainer     *container,
 631                                                     gboolean          include_internals,
 632                                                     GtkCallback       callback,
 633                                                     gpointer          callback_data);
 634
 635 /* Source side drag signals */
 636 static void gtk_tree_view_drag_begin       (GtkWidget        *widget,
 637                                             GdkDragContext   *context);
 638 static void gtk_tree_view_drag_end         (GtkWidget        *widget,
 639                                             GdkDragContext   *context);
 640 static void gtk_tree_view_drag_data_get    (GtkWidget        *widget,
 641                                             GdkDragContext   *context,
 642                                             GtkSelectionData *selection_data,
 643                                             guint             info,
 644                                             guint             time);
 645 static void gtk_tree_view_drag_data_delete (GtkWidget        *widget,
 646                                             GdkDragContext   *context);
 647
 648 /* Target side drag signals */
 649 static void     gtk_tree_view_drag_leave         (GtkWidget        *widget,
 650                                                   GdkDragContext   *context,
 651                                                   guint             time);
 652 static gboolean gtk_tree_view_drag_motion        (GtkWidget        *widget,
 653                                                   GdkDragContext   *context,
 654                                                   gint              x,
 655                                                   gint              y,
 656                                                   guint             time);
 657 static gboolean gtk_tree_view_drag_drop          (GtkWidget        *widget,
 658                                                   GdkDragContext   *context,
 659                                                   gint              x,
 660                                                   gint              y,
 661                                                   guint             time);
 662 static void     gtk_tree_view_drag_data_received (GtkWidget        *widget,
 663                                                   GdkDragContext   *context,
 664                                                   gint              x,
 665                                                   gint              y,
 666                                                   GtkSelectionData *selection_data,
 667                                                   guint             info,
 668                                                   guint             time);
 669
 670 /* tree_model signals */
 671 static gboolean gtk_tree_view_real_move_cursor            (GtkTreeView     *tree_view,
 672                                                            GtkMovementStep  step,
 673                                                            gint             count);
 674 static gboolean gtk_tree_view_real_select_all             (GtkTreeView     *tree_view);
 675 static gboolean gtk_tree_view_real_unselect_all           (GtkTreeView     *tree_view);
 676 static gboolean gtk_tree_view_real_select_cursor_row      (GtkTreeView     *tree_view,
 677                                                            gboolean         start_editing);
 678 static gboolean gtk_tree_view_real_toggle_cursor_row      (GtkTreeView     *tree_view);
 679 static gboolean gtk_tree_view_real_expand_collapse_cursor_row (GtkTreeView     *tree_view,
 680                                                                gboolean         logical,
 681                                                                gboolean         expand,
 682                                                                gboolean         open_all);
 683 static gboolean gtk_tree_view_real_select_cursor_parent   (GtkTreeView     *tree_view);
 684 static void gtk_tree_view_row_changed                     (GtkTreeModel    *model,
 685                                                            GtkTreePath     *path,
 686                                                            GtkTreeIter     *iter,
 687                                                            gpointer         data);
 688 static void gtk_tree_view_row_inserted                    (GtkTreeModel    *model,
 689                                                            GtkTreePath     *path,
 690                                                            GtkTreeIter     *iter,
 691                                                            gpointer         data);
 692 static void gtk_tree_view_row_has_child_toggled           (GtkTreeModel    *model,
 693                                                            GtkTreePath     *path,
 694                                                            GtkTreeIter     *iter,
 695                                                            gpointer         data);
 696 static void gtk_tree_view_row_deleted                     (GtkTreeModel    *model,
 697                                                            GtkTreePath     *path,
 698                                                            gpointer         data);
 699 static void gtk_tree_view_rows_reordered                  (GtkTreeModel    *model,
 700                                                            GtkTreePath     *parent,
 701                                                            GtkTreeIter     *iter,
 702                                                            gint            *new_order,
 703                                                            gpointer         data);
 704
 705 /* Incremental reflow */
 706 static gboolean validate_row             (GtkTreeView *tree_view,
 707                                           GtkRBTree   *tree,
 708                                           GtkRBNode   *node,
 709                                           GtkTreeIter *iter,
 710                                           GtkTreePath *path);
 711 static void     validate_visible_area    (GtkTreeView *tree_view);
 712 static gboolean validate_rows_handler    (GtkTreeView *tree_view);
 713 static gboolean do_validate_rows         (GtkTreeView *tree_view,
 714                                           gboolean     queue_resize);
 715 static gboolean validate_rows            (GtkTreeView *tree_view);
 716 static gboolean presize_handler_callback (gpointer     data);
 717 static void     install_presize_handler  (GtkTreeView *tree_view);
 718 static void     install_scroll_sync_handler (GtkTreeView *tree_view);
 719 static void     gtk_tree_view_set_top_row   (GtkTreeView *tree_view,
 720                                              GtkTreePath *path,
 721                                              gint         offset);
 722 static void     gtk_tree_view_dy_to_top_row (GtkTreeView *tree_view);
 723 static void     gtk_tree_view_top_row_to_dy (GtkTreeView *tree_view);
 724 static void     invalidate_empty_focus      (GtkTreeView *tree_view);
 725
 726 /* Internal functions */
 727 static gboolean gtk_tree_view_is_expander_column             (GtkTreeView        *tree_view,
 728                                                               GtkTreeViewColumn  *column);
 729 static inline gboolean gtk_tree_view_draw_expanders          (GtkTreeView        *tree_view);
 730 static void     gtk_tree_view_add_move_binding               (GtkBindingSet      *binding_set,
 731                                                               guint               keyval,
 732                                                               guint               modmask,
 733                                                               gboolean            add_shifted_binding,
 734                                                               GtkMovementStep     step,
 735                                                               gint                count);
 736 static gint     gtk_tree_view_unref_and_check_selection_tree (GtkTreeView        *tree_view,
 737                                                               GtkRBTree          *tree);
 738 static void     gtk_tree_view_queue_draw_path                (GtkTreeView        *tree_view,
 739                                                               GtkTreePath        *path,
 740                                                               const GdkRectangle *clip_rect);
 741 static void     gtk_tree_view_queue_draw_arrow               (GtkTreeView        *tree_view,
 742                                                               GtkRBTree          *tree,
 743                                                               GtkRBNode          *node);
 744 static void     gtk_tree_view_draw_arrow                     (GtkTreeView        *tree_view,
 745                                                               cairo_t            *cr,
 746                                                               GtkRBTree          *tree,
 747                                                               GtkRBNode          *node);
 748 static void     gtk_tree_view_get_arrow_xrange               (GtkTreeView        *tree_view,
 749                                                               GtkRBTree          *tree,
 750                                                               gint               *x1,
 751                                                               gint               *x2);
 752 static void     gtk_tree_view_adjustment_changed             (GtkAdjustment      *adjustment,
 753                                                               GtkTreeView        *tree_view);
 754 static void     gtk_tree_view_build_tree                     (GtkTreeView        *tree_view,
 755                                                               GtkRBTree          *tree,
 756                                                               GtkTreeIter        *iter,
 757                                                               gint                depth,
 758                                                               gboolean            recurse);
 759 static void     gtk_tree_view_clamp_node_visible             (GtkTreeView        *tree_view,
 760                                                               GtkRBTree          *tree,
 761                                                               GtkRBNode          *node);
 762 static void     gtk_tree_view_clamp_column_visible           (GtkTreeView        *tree_view,
 763                                                               GtkTreeViewColumn  *column,
 764                                                               gboolean            focus_to_cell);
 765 static gboolean gtk_tree_view_maybe_begin_dragging_row       (GtkTreeView        *tree_view,
 766                                                               GdkEventMotion     *event);
 767 static void     gtk_tree_view_focus_to_cursor                (GtkTreeView        *tree_view);
 768 static void     gtk_tree_view_move_cursor_up_down            (GtkTreeView        *tree_view,
 769                                                               gint                count);
 770 static void     gtk_tree_view_move_cursor_page_up_down       (GtkTreeView        *tree_view,
 771                                                               gint                count);
 772 static void     gtk_tree_view_move_cursor_left_right         (GtkTreeView        *tree_view,
 773                                                               gint                count);
 774 static void     gtk_tree_view_move_cursor_start_end          (GtkTreeView        *tree_view,
 775                                                               gint                count);
 776 static gboolean gtk_tree_view_real_collapse_row              (GtkTreeView        *tree_view,
 777                                                               GtkTreePath        *path,
 778                                                               GtkRBTree          *tree,
 779                                                               GtkRBNode          *node,
 780                                                               gboolean            animate);
 781 static gboolean gtk_tree_view_real_expand_row                (GtkTreeView        *tree_view,
 782                                                               GtkTreePath        *path,
 783                                                               GtkRBTree          *tree,
 784                                                               GtkRBNode          *node,
 785                                                               gboolean            open_all,
 786                                                               gboolean            animate);
 787 static void     gtk_tree_view_real_set_cursor                (GtkTreeView        *tree_view,
 788                                                               GtkTreePath        *path,
 789                                                               SetCursorFlags      flags);
 790 static gboolean gtk_tree_view_has_can_focus_cell             (GtkTreeView        *tree_view);
 791 static void     column_sizing_notify                         (GObject            *object,
 792                                                               GParamSpec         *pspec,
 793                                                               gpointer            data);
 794 static void     gtk_tree_view_stop_rubber_band               (GtkTreeView        *tree_view);
 795 static void     update_prelight                              (GtkTreeView        *tree_view,
 796                                                               int                 x,
 797                                                               int                 y);
 798
 799 static inline gint gtk_tree_view_get_effective_header_height (GtkTreeView *tree_view);
 800
 801 static inline gint gtk_tree_view_get_cell_area_y_offset      (GtkTreeView *tree_view,
 802                                                               GtkRBTree   *tree,
 803                                                               GtkRBNode   *node,
 804                                                               gint         vertical_separator);
 805 static inline gint gtk_tree_view_get_cell_area_height        (GtkTreeView *tree_view,
 806                                                               GtkRBNode   *node,
 807                                                               gint         vertical_separator);
 808
 809 static inline gint gtk_tree_view_get_row_y_offset            (GtkTreeView *tree_view,
 810                                                               GtkRBTree   *tree,
 811                                                               GtkRBNode   *node);
 812 static inline gint gtk_tree_view_get_row_height              (GtkTreeView *tree_view,
 813                                                               GtkRBNode   *node);
 814
 815 /* interactive search */
 816 static void     gtk_tree_view_ensure_interactive_directory (GtkTreeView *tree_view);
 817 static void     gtk_tree_view_search_dialog_hide        (GtkWidget        *search_dialog,
 818                                                          GtkTreeView      *tree_view,
 819                                                          GdkDevice        *device);
 820 static void     gtk_tree_view_search_position_func      (GtkTreeView      *tree_view,
 821                                                          GtkWidget        *search_dialog,
 822                                                          gpointer          user_data);
 823 static void     gtk_tree_view_search_disable_popdown    (GtkEntry         *entry,
 824                                                          GtkMenu          *menu,
 825                                                          gpointer          data);
 826 static void     gtk_tree_view_search_preedit_changed    (GtkIMContext     *im_context,
 827                                                          GtkTreeView      *tree_view);
 828 static void     gtk_tree_view_search_activate           (GtkEntry         *entry,
 829                                                          GtkTreeView      *tree_view);
 830 static gboolean gtk_tree_view_real_search_enable_popdown(gpointer          data);
 831 static void     gtk_tree_view_search_enable_popdown     (GtkWidget        *widget,
 832                                                          gpointer          data);
 833 static gboolean gtk_tree_view_search_delete_event       (GtkWidget        *widget,
 834                                                          GdkEventAny      *event,
 835                                                          GtkTreeView      *tree_view);
 836 static gboolean gtk_tree_view_search_button_press_event (GtkWidget        *widget,
 837                                                          GdkEventButton   *event,
 838                                                          GtkTreeView      *tree_view);
 839 static gboolean gtk_tree_view_search_scroll_event       (GtkWidget        *entry,
 840                                                          GdkEventScroll   *event,
 841                                                          GtkTreeView      *tree_view);
 842 static gboolean gtk_tree_view_search_key_press_event    (GtkWidget        *entry,
 843                                                          GdkEventKey      *event,
 844                                                          GtkTreeView      *tree_view);
 845 static gboolean gtk_tree_view_search_move               (GtkWidget        *window,
 846                                                          GtkTreeView      *tree_view,
 847                                                          gboolean          up);
 848 static gboolean gtk_tree_view_search_equal_func         (GtkTreeModel     *model,
 849                                                          gint              column,
 850                                                          const gchar      *key,
 851                                                          GtkTreeIter      *iter,
 852                                                          gpointer          search_data);
 853 static gboolean gtk_tree_view_search_iter               (GtkTreeModel     *model,
 854                                                          GtkTreeSelection *selection,
 855                                                          GtkTreeIter      *iter,
 856                                                          const gchar      *text,
 857                                                          gint             *count,
 858                                                          gint              n);
 859 static void     gtk_tree_view_search_init               (GtkWidget        *entry,
 860                                                          GtkTreeView      *tree_view);
 861 static void     gtk_tree_view_put                       (GtkTreeView      *tree_view,
 862                                                          GtkWidget        *child_widget,
 863                                                          gint              x,
 864                                                          gint              y,
 865                                                          gint              width,
 866                                                          gint              height);
 867 static gboolean gtk_tree_view_start_editing             (GtkTreeView      *tree_view,
 868                                                          GtkTreePath      *cursor_path,
 869                                                          gboolean          edit_only);
 870 static void gtk_tree_view_stop_editing                  (GtkTreeView *tree_view,
 871                                                          gboolean     cancel_editing);
 872 static gboolean gtk_tree_view_real_start_interactive_search (GtkTreeView *tree_view,
 873                                                              GdkDevice   *device,
 874                                                              gboolean     keybinding);
 875 static gboolean gtk_tree_view_start_interactive_search      (GtkTreeView *tree_view);
 876 static GtkTreeViewColumn *gtk_tree_view_get_drop_column (GtkTreeView       *tree_view,
 877                                                          GtkTreeViewColumn *column,
 878                                                          gint               drop_position);
 879
 880 /* GtkBuildable */
 881 static void     gtk_tree_view_buildable_add_child          (GtkBuildable      *tree_view,
 882                                                             GtkBuilder        *builder,
 883                                                             GObject           *child,
 884                                                             const gchar       *type);
 885 static GObject *gtk_tree_view_buildable_get_internal_child (GtkBuildable      *buildable,
 886                                                             GtkBuilder        *builder,
 887                                                             const gchar       *childname);
 888 static void     gtk_tree_view_buildable_init               (GtkBuildableIface *iface);
 889
 890 static GtkAdjustment *gtk_tree_view_do_get_hadjustment (GtkTreeView   *tree_view);
 891 static void           gtk_tree_view_do_set_hadjustment (GtkTreeView   *tree_view,
 892                                                         GtkAdjustment *adjustment);
 893 static GtkAdjustment *gtk_tree_view_do_get_vadjustment (GtkTreeView   *tree_view);
 894 static void           gtk_tree_view_do_set_vadjustment (GtkTreeView   *tree_view,
 895                                                         GtkAdjustment *adjustment);
 896
 897 static gboolean scroll_row_timeout                   (gpointer     data);
 898 static void     add_scroll_timeout                   (GtkTreeView *tree_view);
 899 static void     remove_scroll_timeout                (GtkTreeView *tree_view);
 900
 901 static guint tree_view_signals [LAST_SIGNAL] = { 0 };
 902
 903 \f
 904
 905 /* GType Methods
 906  */
 907
 908 G_DEFINE_TYPE_WITH_CODE (GtkTreeView, gtk_tree_view, GTK_TYPE_CONTAINER,
 909                          G_IMPLEMENT_INTERFACE (GTK_TYPE_BUILDABLE,
 910                                                 gtk_tree_view_buildable_init)
 911                          G_IMPLEMENT_INTERFACE (GTK_TYPE_SCROLLABLE, NULL))
 912
 913 static void
 914 gtk_tree_view_class_init (GtkTreeViewClass *class)
 915 {
 916   GObjectClass *o_class;
 917   GtkWidgetClass *widget_class;
 918   GtkContainerClass *container_class;
 919   GtkBindingSet *binding_set;
 920
 921   binding_set = gtk_binding_set_by_class (class);
 922
 923   o_class = (GObjectClass *) class;
 924   widget_class = (GtkWidgetClass *) class;
 925   container_class = (GtkContainerClass *) class;
 926
 927   /* GObject signals */
 928   o_class->set_property = gtk_tree_view_set_property;
 929   o_class->get_property = gtk_tree_view_get_property;
 930   o_class->finalize = gtk_tree_view_finalize;
 931
 932   /* GtkWidget signals */
 933   widget_class->destroy = gtk_tree_view_destroy;
 934   widget_class->map = gtk_tree_view_map;
 935   widget_class->realize = gtk_tree_view_realize;
 936   widget_class->unrealize = gtk_tree_view_unrealize;
 937   widget_class->get_preferred_width = gtk_tree_view_get_preferred_width;
 938   widget_class->get_preferred_height = gtk_tree_view_get_preferred_height;
 939   widget_class->size_allocate = gtk_tree_view_size_allocate;
 940   widget_class->button_press_event = gtk_tree_view_button_press;
 941   widget_class->button_release_event = gtk_tree_view_button_release;
 942   widget_class->grab_broken_event = gtk_tree_view_grab_broken;
 943   /*widget_class->configure_event = gtk_tree_view_configure;*/
 944   widget_class->motion_notify_event = gtk_tree_view_motion;
 945   widget_class->draw = gtk_tree_view_draw;
 946   widget_class->key_press_event = gtk_tree_view_key_press;
 947   widget_class->key_release_event = gtk_tree_view_key_release;
 948   widget_class->enter_notify_event = gtk_tree_view_enter_notify;
 949   widget_class->leave_notify_event = gtk_tree_view_leave_notify;
 950   widget_class->focus_out_event = gtk_tree_view_focus_out;
 951   widget_class->drag_begin = gtk_tree_view_drag_begin;
 952   widget_class->drag_end = gtk_tree_view_drag_end;
 953   widget_class->drag_data_get = gtk_tree_view_drag_data_get;
 954   widget_class->drag_data_delete = gtk_tree_view_drag_data_delete;
 955   widget_class->drag_leave = gtk_tree_view_drag_leave;
 956   widget_class->drag_motion = gtk_tree_view_drag_motion;
 957   widget_class->drag_drop = gtk_tree_view_drag_drop;
 958   widget_class->drag_data_received = gtk_tree_view_drag_data_received;
 959   widget_class->focus = gtk_tree_view_focus;
 960   widget_class->grab_focus = gtk_tree_view_grab_focus;
 961   widget_class->style_updated = gtk_tree_view_style_updated;
 962   widget_class->grab_notify = gtk_tree_view_grab_notify;
 963   widget_class->state_flags_changed = gtk_tree_view_state_flags_changed;
 964
 965   /* GtkContainer signals */
 966   container_class->remove = gtk_tree_view_remove;
 967   container_class->forall = gtk_tree_view_forall;
 968   container_class->set_focus_child = gtk_tree_view_set_focus_child;
 969   container_class->get_path_for_child = gtk_tree_view_get_path_for_child;
 970
 971   class->move_cursor = gtk_tree_view_real_move_cursor;
 972   class->select_all = gtk_tree_view_real_select_all;
 973   class->unselect_all = gtk_tree_view_real_unselect_all;
 974   class->select_cursor_row = gtk_tree_view_real_select_cursor_row;
 975   class->toggle_cursor_row = gtk_tree_view_real_toggle_cursor_row;
 976   class->expand_collapse_cursor_row = gtk_tree_view_real_expand_collapse_cursor_row;
 977   class->select_cursor_parent = gtk_tree_view_real_select_cursor_parent;
 978   class->start_interactive_search = gtk_tree_view_start_interactive_search;
 979
 980   /* Properties */
 981
 982   g_object_class_install_property (o_class,
 983                                    PROP_MODEL,
 984                                    g_param_spec_object ("model",
 985                                                         P_("TreeView Model"),
 986                                                         P_("The model for the tree view"),
 987                                                         GTK_TYPE_TREE_MODEL,
 988                                                         GTK_PARAM_READWRITE));
 989
 990   g_object_class_override_property (o_class, PROP_HADJUSTMENT,    "hadjustment");
 991   g_object_class_override_property (o_class, PROP_VADJUSTMENT,    "vadjustment");
 992   g_object_class_override_property (o_class, PROP_HSCROLL_POLICY, "hscroll-policy");
 993   g_object_class_override_property (o_class, PROP_VSCROLL_POLICY, "vscroll-policy");
 994
 995   g_object_class_install_property (o_class,
 996                                    PROP_HEADERS_VISIBLE,
 997                                    g_param_spec_boolean ("headers-visible",
 998                                                          P_("Headers Visible"),
 999                                                          P_("Show the column header buttons"),
1000                                                          TRUE,
1001                                                          GTK_PARAM_READWRITE));
1002
1003   g_object_class_install_property (o_class,
1004                                    PROP_HEADERS_CLICKABLE,
1005                                    g_param_spec_boolean ("headers-clickable",
1006                                                          P_("Headers Clickable"),
1007                                                          P_("Column headers respond to click events"),
1008                                                          TRUE,
1009                                                          GTK_PARAM_READWRITE));
1010
1011   g_object_class_install_property (o_class,
1012                                    PROP_EXPANDER_COLUMN,
1013                                    g_param_spec_object ("expander-column",
1014                                                         P_("Expander Column"),
1015                                                         P_("Set the column for the expander column"),
1016                                                         GTK_TYPE_TREE_VIEW_COLUMN,
1017                                                         GTK_PARAM_READWRITE));
1018
1019   g_object_class_install_property (o_class,
1020                                    PROP_REORDERABLE,
1021                                    g_param_spec_boolean ("reorderable",
1022                                                          P_("Reorderable"),
1023                                                          P_("View is reorderable"),
1024                                                          FALSE,
1025                                                          GTK_PARAM_READWRITE));
1026
1027   g_object_class_install_property (o_class,
1028                                    PROP_RULES_HINT,
1029                                    g_param_spec_boolean ("rules-hint",
1030                                                          P_("Rules Hint"),
1031                                                          P_("Set a hint to the theme engine to draw rows in alternating colors"),
1032                                                          FALSE,
1033                                                          GTK_PARAM_READWRITE));
1034
1035     g_object_class_install_property (o_class,
1036                                      PROP_ENABLE_SEARCH,
1037                                      g_param_spec_boolean ("enable-search",
1038                                                            P_("Enable Search"),
1039                                                            P_("View allows user to search through columns interactively"),
1040                                                            TRUE,
1041                                                            GTK_PARAM_READWRITE));
1042
1043     g_object_class_install_property (o_class,
1044                                      PROP_SEARCH_COLUMN,
1045                                      g_param_spec_int ("search-column",
1046                                                        P_("Search Column"),
1047                                                        P_("Model column to search through during interactive search"),
1048                                                        -1,
1049                                                        G_MAXINT,
1050                                                        -1,
1051                                                        GTK_PARAM_READWRITE));
1052
1053     /**
1054      * GtkTreeView:fixed-height-mode:
1055      *
1056      * Setting the ::fixed-height-mode property to %TRUE speeds up
1057      * #GtkTreeView by assuming that all rows have the same height.
1058      * Only enable this option if all rows are the same height.
1059      * Please see gtk_tree_view_set_fixed_height_mode() for more
1060      * information on this option.
1061      *
1062      * Since: 2.4
1063      **/
1064     g_object_class_install_property (o_class,
1065                                      PROP_FIXED_HEIGHT_MODE,
1066                                      g_param_spec_boolean ("fixed-height-mode",
1067                                                            P_("Fixed Height Mode"),
1068                                                            P_("Speeds up GtkTreeView by assuming that all rows have the same height"),
1069                                                            FALSE,
1070                                                            GTK_PARAM_READWRITE));
1071
1072     /**
1073      * GtkTreeView:hover-selection:
1074      *
1075      * Enables or disables the hover selection mode of @tree_view.
1076      * Hover selection makes the selected row follow the pointer.
1077      * Currently, this works only for the selection modes
1078      * %GTK_SELECTION_SINGLE and %GTK_SELECTION_BROWSE.
1079      *
1080      * This mode is primarily intended for treeviews in popups, e.g.
1081      * in #GtkComboBox or #GtkEntryCompletion.
1082      *
1083      * Since: 2.6
1084      */
1085     g_object_class_install_property (o_class,
1086                                      PROP_HOVER_SELECTION,
1087                                      g_param_spec_boolean ("hover-selection",
1088                                                            P_("Hover Selection"),
1089                                                            P_("Whether the selection should follow the pointer"),
1090                                                            FALSE,
1091                                                            GTK_PARAM_READWRITE));
1092
1093     /**
1094      * GtkTreeView:hover-expand:
1095      *
1096      * Enables or disables the hover expansion mode of @tree_view.
1097      * Hover expansion makes rows expand or collapse if the pointer moves
1098      * over them.
1099      *
1100      * This mode is primarily intended for treeviews in popups, e.g.
1101      * in #GtkComboBox or #GtkEntryCompletion.
1102      *
1103      * Since: 2.6
1104      */
1105     g_object_class_install_property (o_class,
1106                                      PROP_HOVER_EXPAND,
1107                                      g_param_spec_boolean ("hover-expand",
1108                                                            P_("Hover Expand"),
1109                                                            P_("Whether rows should be expanded/collapsed when the pointer moves over them"),
1110                                                            FALSE,
1111                                                            GTK_PARAM_READWRITE));
1112
1113     /**
1114      * GtkTreeView:show-expanders:
1115      *
1116      * %TRUE if the view has expanders.
1117      *
1118      * Since: 2.12
1119      */
1120     g_object_class_install_property (o_class,
1121                                      PROP_SHOW_EXPANDERS,
1122                                      g_param_spec_boolean ("show-expanders",
1123                                                            P_("Show Expanders"),
1124                                                            P_("View has expanders"),
1125                                                            TRUE,
1126                                                            GTK_PARAM_READWRITE));
1127
1128     /**
1129      * GtkTreeView:level-indentation:
1130      *
1131      * Extra indentation for each level.
1132      *
1133      * Since: 2.12
1134      */
1135     g_object_class_install_property (o_class,
1136                                      PROP_LEVEL_INDENTATION,
1137                                      g_param_spec_int ("level-indentation",
1138                                                        P_("Level Indentation"),
1139                                                        P_("Extra indentation for each level"),
1140                                                        0,
1141                                                        G_MAXINT,
1142                                                        0,
1143                                                        GTK_PARAM_READWRITE));
1144
1145     g_object_class_install_property (o_class,
1146                                      PROP_RUBBER_BANDING,
1147                                      g_param_spec_boolean ("rubber-banding",
1148                                                            P_("Rubber Banding"),
1149                                                            P_("Whether to enable selection of multiple items by dragging the mouse pointer"),
1150                                                            FALSE,
1151                                                            GTK_PARAM_READWRITE));
1152
1153     g_object_class_install_property (o_class,
1154                                      PROP_ENABLE_GRID_LINES,
1155                                      g_param_spec_enum ("enable-grid-lines",
1156                                                         P_("Enable Grid Lines"),
1157                                                         P_("Whether grid lines should be drawn in the tree view"),
1158                                                         GTK_TYPE_TREE_VIEW_GRID_LINES,
1159                                                         GTK_TREE_VIEW_GRID_LINES_NONE,
1160                                                         GTK_PARAM_READWRITE));
1161
1162     g_object_class_install_property (o_class,
1163                                      PROP_ENABLE_TREE_LINES,
1164                                      g_param_spec_boolean ("enable-tree-lines",
1165                                                            P_("Enable Tree Lines"),
1166                                                            P_("Whether tree lines should be drawn in the tree view"),
1167                                                            FALSE,
1168                                                            GTK_PARAM_READWRITE));
1169
1170     g_object_class_install_property (o_class,
1171                                      PROP_TOOLTIP_COLUMN,
1172                                      g_param_spec_int ("tooltip-column",
1173                                                        P_("Tooltip Column"),
1174                                                        P_("The column in the model containing the tooltip texts for the rows"),
1175                                                        -1,
1176                                                        G_MAXINT,
1177                                                        -1,
1178                                                        GTK_PARAM_READWRITE));
1179
1180   /**
1181    * GtkTreeView:activate-on-single-click:
1182    *
1183    * The activate-on-single-click property specifies whether the "row-activated" signal
1184    * will be emitted after a single click.
1185    *
1186    * Since: 3.8
1187    */
1188   g_object_class_install_property (o_class,
1189                                    PROP_ACTIVATE_ON_SINGLE_CLICK,
1190                                    g_param_spec_boolean ("activate-on-single-click",
1191                                                          P_("Activate on Single Click"),
1192                                                          P_("Activate row on a single click"),
1193                                                          FALSE,
1194                                                          GTK_PARAM_READWRITE));
1195
1196   /* Style properties */
1197 #define _TREE_VIEW_EXPANDER_SIZE 14
1198 #define _TREE_VIEW_VERTICAL_SEPARATOR 2
1199 #define _TREE_VIEW_HORIZONTAL_SEPARATOR 2
1200
1201   gtk_widget_class_install_style_property (widget_class,
1202                                            g_param_spec_int ("expander-size",
1203                                                              P_("Expander Size"),
1204                                                              P_("Size of the expander arrow"),
1205                                                              0,
1206                                                              G_MAXINT,
1207                                                              _TREE_VIEW_EXPANDER_SIZE,
1208                                                              GTK_PARAM_READABLE));
1209
1210   gtk_widget_class_install_style_property (widget_class,
1211                                            g_param_spec_int ("vertical-separator",
1212                                                              P_("Vertical Separator Width"),
1213                                                              P_("Vertical space between cells.  Must be an even number"),
1214                                                              0,
1215                                                              G_MAXINT,
1216                                                              _TREE_VIEW_VERTICAL_SEPARATOR,
1217                                                              GTK_PARAM_READABLE));
1218
1219   gtk_widget_class_install_style_property (widget_class,
1220                                            g_param_spec_int ("horizontal-separator",
1221                                                              P_("Horizontal Separator Width"),
1222                                                              P_("Horizontal space between cells.  Must be an even number"),
1223                                                              0,
1224                                                              G_MAXINT,
1225                                                              _TREE_VIEW_HORIZONTAL_SEPARATOR,
1226                                                              GTK_PARAM_READABLE));
1227
1228   gtk_widget_class_install_style_property (widget_class,
1229                                            g_param_spec_boolean ("allow-rules",
1230                                                                  P_("Allow Rules"),
1231                                                                  P_("Allow drawing of alternating color rows"),
1232                                                                  TRUE,
1233                                                                  GTK_PARAM_READABLE));
1234
1235   gtk_widget_class_install_style_property (widget_class,
1236                                            g_param_spec_boolean ("indent-expanders",
1237                                                                  P_("Indent Expanders"),
1238                                                                  P_("Make the expanders indented"),
1239                                                                  TRUE,
1240                                                                  GTK_PARAM_READABLE));
1241
1242   gtk_widget_class_install_style_property (widget_class,
1243                                            g_param_spec_boxed ("even-row-color",
1244                                                                P_("Even Row Color"),
1245                                                                P_("Color to use for even rows"),
1246                                                                GDK_TYPE_COLOR,
1247                                                                GTK_PARAM_READABLE));
1248
1249   gtk_widget_class_install_style_property (widget_class,
1250                                            g_param_spec_boxed ("odd-row-color",
1251                                                                P_("Odd Row Color"),
1252                                                                P_("Color to use for odd rows"),
1253                                                                GDK_TYPE_COLOR,
1254                                                                GTK_PARAM_READABLE));
1255
1256   gtk_widget_class_install_style_property (widget_class,
1257                                            g_param_spec_int ("grid-line-width",
1258                                                              P_("Grid line width"),
1259                                                              P_("Width, in pixels, of the tree view grid lines"),
1260                                                              0, G_MAXINT, 1,
1261                                                              GTK_PARAM_READABLE));
1262
1263   gtk_widget_class_install_style_property (widget_class,
1264                                            g_param_spec_int ("tree-line-width",
1265                                                              P_("Tree line width"),
1266                                                              P_("Width, in pixels, of the tree view lines"),
1267                                                              0, G_MAXINT, 1,
1268                                                              GTK_PARAM_READABLE));
1269
1270   gtk_widget_class_install_style_property (widget_class,
1271                                            g_param_spec_string ("grid-line-pattern",
1272                                                                 P_("Grid line pattern"),
1273                                                                 P_("Dash pattern used to draw the tree view grid lines"),
1274                                                                 "\1\1",
1275                                                                 GTK_PARAM_READABLE));
1276
1277   gtk_widget_class_install_style_property (widget_class,
1278                                            g_param_spec_string ("tree-line-pattern",
1279                                                                 P_("Tree line pattern"),
1280                                                                 P_("Dash pattern used to draw the tree view lines"),
1281                                                                 "\1\1",
1282                                                                 GTK_PARAM_READABLE));
1283
1284   /* Signals */
1285   /**
1286    * GtkTreeView::row-activated:
1287    * @tree_view: the object on which the signal is emitted
1288    * @path: the #GtkTreePath for the activated row
1289    * @column: the #GtkTreeViewColumn in which the activation occurred
1290    *
1291    * The "row-activated" signal is emitted when the method
1292    * gtk_tree_view_row_activated() is called, when the user double
1293    * clicks a treeview row with the "activate-on-single-click"
1294    * property set to %FALSE, or when the user single clicks a row when
1295    * the "activate-on-single-click" property set to %TRUE. It is also
1296    * emitted when a non-editable row is selected and one of the keys:
1297    * Space, Shift+Space, Return or Enter is pressed.
1298    *
1299    * For selection handling refer to the <link linkend="TreeWidget">tree
1300    * widget conceptual overview</link> as well as #GtkTreeSelection.
1301    */
1302   tree_view_signals[ROW_ACTIVATED] =
1303     g_signal_new (I_("row-activated"),
1304                   G_TYPE_FROM_CLASS (o_class),
1305                   G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
1306                   G_STRUCT_OFFSET (GtkTreeViewClass, row_activated),
1307                   NULL, NULL,
1308                   _gtk_marshal_VOID__BOXED_OBJECT,
1309                   G_TYPE_NONE, 2,
1310                   GTK_TYPE_TREE_PATH,
1311                   GTK_TYPE_TREE_VIEW_COLUMN);
1312
1313   /**
1314    * GtkTreeView::test-expand-row:
1315    * @tree_view: the object on which the signal is emitted
1316    * @iter: the tree iter of the row to expand
1317    * @path: a tree path that points to the row
1318    *
1319    * The given row is about to be expanded (show its children nodes). Use this
1320    * signal if you need to control the expandability of individual rows.
1321    *
1322    * Returns: %FALSE to allow expansion, %TRUE to reject
1323    */
1324   tree_view_signals[TEST_EXPAND_ROW] =
1325     g_signal_new (I_("test-expand-row"),
1326                   G_TYPE_FROM_CLASS (o_class),
1327                   G_SIGNAL_RUN_LAST,
1328                   G_STRUCT_OFFSET (GtkTreeViewClass, test_expand_row),
1329                   _gtk_boolean_handled_accumulator, NULL,
1330                   _gtk_marshal_BOOLEAN__BOXED_BOXED,
1331                   G_TYPE_BOOLEAN, 2,
1332                   GTK_TYPE_TREE_ITER,
1333                   GTK_TYPE_TREE_PATH);
1334
1335   /**
1336    * GtkTreeView::test-collapse-row:
1337    * @tree_view: the object on which the signal is emitted
1338    * @iter: the tree iter of the row to collapse
1339    * @path: a tree path that points to the row
1340    *
1341    * The given row is about to be collapsed (hide its children nodes). Use this
1342    * signal if you need to control the collapsibility of individual rows.
1343    *
1344    * Returns: %FALSE to allow collapsing, %TRUE to reject
1345    */
1346   tree_view_signals[TEST_COLLAPSE_ROW] =
1347     g_signal_new (I_("test-collapse-row"),
1348                   G_TYPE_FROM_CLASS (o_class),
1349                   G_SIGNAL_RUN_LAST,
1350                   G_STRUCT_OFFSET (GtkTreeViewClass, test_collapse_row),
1351                   _gtk_boolean_handled_accumulator, NULL,
1352                   _gtk_marshal_BOOLEAN__BOXED_BOXED,
1353                   G_TYPE_BOOLEAN, 2,
1354                   GTK_TYPE_TREE_ITER,
1355                   GTK_TYPE_TREE_PATH);
1356
1357   /**
1358    * GtkTreeView::row-expanded:
1359    * @tree_view: the object on which the signal is emitted
1360    * @iter: the tree iter of the expanded row
1361    * @path: a tree path that points to the row
1362    *
1363    * The given row has been expanded (child nodes are shown).
1364    */
1365   tree_view_signals[ROW_EXPANDED] =
1366     g_signal_new (I_("row-expanded"),
1367                   G_TYPE_FROM_CLASS (o_class),
1368                   G_SIGNAL_RUN_LAST,
1369                   G_STRUCT_OFFSET (GtkTreeViewClass, row_expanded),
1370                   NULL, NULL,
1371                   _gtk_marshal_VOID__BOXED_BOXED,
1372                   G_TYPE_NONE, 2,
1373                   GTK_TYPE_TREE_ITER,
1374                   GTK_TYPE_TREE_PATH);
1375
1376   /**
1377    * GtkTreeView::row-collapsed:
1378    * @tree_view: the object on which the signal is emitted
1379    * @iter: the tree iter of the collapsed row
1380    * @path: a tree path that points to the row
1381    *
1382    * The given row has been collapsed (child nodes are hidden).
1383    */
1384   tree_view_signals[ROW_COLLAPSED] =
1385     g_signal_new (I_("row-collapsed"),
1386                   G_TYPE_FROM_CLASS (o_class),
1387                   G_SIGNAL_RUN_LAST,
1388                   G_STRUCT_OFFSET (GtkTreeViewClass, row_collapsed),
1389                   NULL, NULL,
1390                   _gtk_marshal_VOID__BOXED_BOXED,
1391                   G_TYPE_NONE, 2,
1392                   GTK_TYPE_TREE_ITER,
1393                   GTK_TYPE_TREE_PATH);
1394
1395   /**
1396    * GtkTreeView::columns-changed:
1397    * @tree_view: the object on which the signal is emitted
1398    *
1399    * The number of columns of the treeview has changed.
1400    */
1401   tree_view_signals[COLUMNS_CHANGED] =
1402     g_signal_new (I_("columns-changed"),
1403                   G_TYPE_FROM_CLASS (o_class),
1404                   G_SIGNAL_RUN_LAST,
1405                   G_STRUCT_OFFSET (GtkTreeViewClass, columns_changed),
1406                   NULL, NULL,
1407                   _gtk_marshal_VOID__VOID,
1408                   G_TYPE_NONE, 0);
1409
1410   /**
1411    * GtkTreeView::cursor-changed:
1412    * @tree_view: the object on which the signal is emitted
1413    *
1414    * The position of the cursor (focused cell) has changed.
1415    */
1416   tree_view_signals[CURSOR_CHANGED] =
1417     g_signal_new (I_("cursor-changed"),
1418                   G_TYPE_FROM_CLASS (o_class),
1419                   G_SIGNAL_RUN_LAST,
1420                   G_STRUCT_OFFSET (GtkTreeViewClass, cursor_changed),
1421                   NULL, NULL,
1422                   _gtk_marshal_VOID__VOID,
1423                   G_TYPE_NONE, 0);
1424
1425   tree_view_signals[MOVE_CURSOR] =
1426     g_signal_new (I_("move-cursor"),
1427                   G_TYPE_FROM_CLASS (o_class),
1428                   G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
1429                   G_STRUCT_OFFSET (GtkTreeViewClass, move_cursor),
1430                   NULL, NULL,
1431                   _gtk_marshal_BOOLEAN__ENUM_INT,
1432                   G_TYPE_BOOLEAN, 2,
1433                   GTK_TYPE_MOVEMENT_STEP,
1434                   G_TYPE_INT);
1435
1436   tree_view_signals[SELECT_ALL] =
1437     g_signal_new (I_("select-all"),
1438                   G_TYPE_FROM_CLASS (o_class),
1439                   G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
1440                   G_STRUCT_OFFSET (GtkTreeViewClass, select_all),
1441                   NULL, NULL,
1442                   _gtk_marshal_BOOLEAN__VOID,
1443                   G_TYPE_BOOLEAN, 0);
1444
1445   tree_view_signals[UNSELECT_ALL] =
1446     g_signal_new (I_("unselect-all"),
1447                   G_TYPE_FROM_CLASS (o_class),
1448                   G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
1449                   G_STRUCT_OFFSET (GtkTreeViewClass, unselect_all),
1450                   NULL, NULL,
1451                   _gtk_marshal_BOOLEAN__VOID,
1452                   G_TYPE_BOOLEAN, 0);
1453
1454   tree_view_signals[SELECT_CURSOR_ROW] =
1455     g_signal_new (I_("select-cursor-row"),
1456                   G_TYPE_FROM_CLASS (o_class),
1457                   G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
1458                   G_STRUCT_OFFSET (GtkTreeViewClass, select_cursor_row),
1459                   NULL, NULL,
1460                   _gtk_marshal_BOOLEAN__BOOLEAN,
1461                   G_TYPE_BOOLEAN, 1,
1462                   G_TYPE_BOOLEAN);
1463
1464   tree_view_signals[TOGGLE_CURSOR_ROW] =
1465     g_signal_new (I_("toggle-cursor-row"),
1466                   G_TYPE_FROM_CLASS (o_class),
1467                   G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
1468                   G_STRUCT_OFFSET (GtkTreeViewClass, toggle_cursor_row),
1469                   NULL, NULL,
1470                   _gtk_marshal_BOOLEAN__VOID,
1471                   G_TYPE_BOOLEAN, 0);
1472
1473   tree_view_signals[EXPAND_COLLAPSE_CURSOR_ROW] =
1474     g_signal_new (I_("expand-collapse-cursor-row"),
1475                   G_TYPE_FROM_CLASS (o_class),
1476                   G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
1477                   G_STRUCT_OFFSET (GtkTreeViewClass, expand_collapse_cursor_row),
1478                   NULL, NULL,
1479                   _gtk_marshal_BOOLEAN__BOOLEAN_BOOLEAN_BOOLEAN,
1480                   G_TYPE_BOOLEAN, 3,
1481                   G_TYPE_BOOLEAN,
1482                   G_TYPE_BOOLEAN,
1483                   G_TYPE_BOOLEAN);
1484
1485   tree_view_signals[SELECT_CURSOR_PARENT] =
1486     g_signal_new (I_("select-cursor-parent"),
1487                   G_TYPE_FROM_CLASS (o_class),
1488                   G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
1489                   G_STRUCT_OFFSET (GtkTreeViewClass, select_cursor_parent),
1490                   NULL, NULL,
1491                   _gtk_marshal_BOOLEAN__VOID,
1492                   G_TYPE_BOOLEAN, 0);
1493
1494   tree_view_signals[START_INTERACTIVE_SEARCH] =
1495     g_signal_new (I_("start-interactive-search"),
1496                   G_TYPE_FROM_CLASS (o_class),
1497                   G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
1498                   G_STRUCT_OFFSET (GtkTreeViewClass, start_interactive_search),
1499                   NULL, NULL,
1500                   _gtk_marshal_BOOLEAN__VOID,
1501                   G_TYPE_BOOLEAN, 0);
1502
1503   /* Key bindings */
1504   gtk_tree_view_add_move_binding (binding_set, GDK_KEY_Up, 0, TRUE,
1505                                   GTK_MOVEMENT_DISPLAY_LINES, -1);
1506   gtk_tree_view_add_move_binding (binding_set, GDK_KEY_KP_Up, 0, TRUE,
1507                                   GTK_MOVEMENT_DISPLAY_LINES, -1);
1508
1509   gtk_tree_view_add_move_binding (binding_set, GDK_KEY_Down, 0, TRUE,
1510                                   GTK_MOVEMENT_DISPLAY_LINES, 1);
1511   gtk_tree_view_add_move_binding (binding_set, GDK_KEY_KP_Down, 0, TRUE,
1512                                   GTK_MOVEMENT_DISPLAY_LINES, 1);
1513
1514   gtk_tree_view_add_move_binding (binding_set, GDK_KEY_p, GDK_CONTROL_MASK, FALSE,
1515                                   GTK_MOVEMENT_DISPLAY_LINES, -1);
1516
1517   gtk_tree_view_add_move_binding (binding_set, GDK_KEY_n, GDK_CONTROL_MASK, FALSE,
1518                                   GTK_MOVEMENT_DISPLAY_LINES, 1);
1519
1520   gtk_tree_view_add_move_binding (binding_set, GDK_KEY_Home, 0, TRUE,
1521                                   GTK_MOVEMENT_BUFFER_ENDS, -1);
1522   gtk_tree_view_add_move_binding (binding_set, GDK_KEY_KP_Home, 0, TRUE,
1523                                   GTK_MOVEMENT_BUFFER_ENDS, -1);
1524
1525   gtk_tree_view_add_move_binding (binding_set, GDK_KEY_End, 0, TRUE,
1526                                   GTK_MOVEMENT_BUFFER_ENDS, 1);
1527   gtk_tree_view_add_move_binding (binding_set, GDK_KEY_KP_End, 0, TRUE,
1528                                   GTK_MOVEMENT_BUFFER_ENDS, 1);
1529
1530   gtk_tree_view_add_move_binding (binding_set, GDK_KEY_Page_Up, 0, TRUE,
1531                                   GTK_MOVEMENT_PAGES, -1);
1532   gtk_tree_view_add_move_binding (binding_set, GDK_KEY_KP_Page_Up, 0, TRUE,
1533                                   GTK_MOVEMENT_PAGES, -1);
1534
1535   gtk_tree_view_add_move_binding (binding_set, GDK_KEY_Page_Down, 0, TRUE,
1536                                   GTK_MOVEMENT_PAGES, 1);
1537   gtk_tree_view_add_move_binding (binding_set, GDK_KEY_KP_Page_Down, 0, TRUE,
1538                                   GTK_MOVEMENT_PAGES, 1);
1539
1540
1541   gtk_binding_entry_add_signal (binding_set, GDK_KEY_Right, 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_Left, 0, "move-cursor", 2,
1546                                 G_TYPE_ENUM, GTK_MOVEMENT_VISUAL_POSITIONS,
1547                                 G_TYPE_INT, -1);
1548
1549   gtk_binding_entry_add_signal (binding_set, GDK_KEY_KP_Right, 0, "move-cursor", 2,
1550                                 G_TYPE_ENUM, GTK_MOVEMENT_VISUAL_POSITIONS,
1551                                 G_TYPE_INT, 1);
1552
1553   gtk_binding_entry_add_signal (binding_set, GDK_KEY_KP_Left, 0, "move-cursor", 2,
1554                                 G_TYPE_ENUM, GTK_MOVEMENT_VISUAL_POSITIONS,
1555                                 G_TYPE_INT, -1);
1556
1557   gtk_binding_entry_add_signal (binding_set, GDK_KEY_Right, GDK_CONTROL_MASK,
1558                                 "move-cursor", 2,
1559                                 G_TYPE_ENUM, GTK_MOVEMENT_VISUAL_POSITIONS,
1560                                 G_TYPE_INT, 1);
1561
1562   gtk_binding_entry_add_signal (binding_set, GDK_KEY_Left, GDK_CONTROL_MASK,
1563                                 "move-cursor", 2,
1564                                 G_TYPE_ENUM, GTK_MOVEMENT_VISUAL_POSITIONS,
1565                                 G_TYPE_INT, -1);
1566
1567   gtk_binding_entry_add_signal (binding_set, GDK_KEY_KP_Right, GDK_CONTROL_MASK,
1568                                 "move-cursor", 2,
1569                                 G_TYPE_ENUM, GTK_MOVEMENT_VISUAL_POSITIONS,
1570                                 G_TYPE_INT, 1);
1571
1572   gtk_binding_entry_add_signal (binding_set, GDK_KEY_KP_Left, GDK_CONTROL_MASK,
1573                                 "move-cursor", 2,
1574                                 G_TYPE_ENUM, GTK_MOVEMENT_VISUAL_POSITIONS,
1575                                 G_TYPE_INT, -1);
1576
1577   gtk_binding_entry_add_signal (binding_set, GDK_KEY_space, GDK_CONTROL_MASK, "toggle-cursor-row", 0);
1578   gtk_binding_entry_add_signal (binding_set, GDK_KEY_KP_Space, GDK_CONTROL_MASK, "toggle-cursor-row", 0);
1579
1580   gtk_binding_entry_add_signal (binding_set, GDK_KEY_a, GDK_CONTROL_MASK, "select-all", 0);
1581   gtk_binding_entry_add_signal (binding_set, GDK_KEY_slash, GDK_CONTROL_MASK, "select-all", 0);
1582
1583   gtk_binding_entry_add_signal (binding_set, GDK_KEY_A, GDK_CONTROL_MASK | GDK_SHIFT_MASK, "unselect-all", 0);
1584   gtk_binding_entry_add_signal (binding_set, GDK_KEY_backslash, GDK_CONTROL_MASK, "unselect-all", 0);
1585
1586   gtk_binding_entry_add_signal (binding_set, GDK_KEY_space, GDK_SHIFT_MASK, "select-cursor-row", 1,
1587                                 G_TYPE_BOOLEAN, TRUE);
1588   gtk_binding_entry_add_signal (binding_set, GDK_KEY_KP_Space, GDK_SHIFT_MASK, "select-cursor-row", 1,
1589                                 G_TYPE_BOOLEAN, TRUE);
1590
1591   gtk_binding_entry_add_signal (binding_set, GDK_KEY_space, 0, "select-cursor-row", 1,
1592                                 G_TYPE_BOOLEAN, TRUE);
1593   gtk_binding_entry_add_signal (binding_set, GDK_KEY_KP_Space, 0, "select-cursor-row", 1,
1594                                 G_TYPE_BOOLEAN, TRUE);
1595   gtk_binding_entry_add_signal (binding_set, GDK_KEY_Return, 0, "select-cursor-row", 1,
1596                                 G_TYPE_BOOLEAN, TRUE);
1597   gtk_binding_entry_add_signal (binding_set, GDK_KEY_ISO_Enter, 0, "select-cursor-row", 1,
1598                                 G_TYPE_BOOLEAN, TRUE);
1599   gtk_binding_entry_add_signal (binding_set, GDK_KEY_KP_Enter, 0, "select-cursor-row", 1,
1600                                 G_TYPE_BOOLEAN, TRUE);
1601
1602   /* expand and collapse rows */
1603   gtk_binding_entry_add_signal (binding_set, GDK_KEY_plus, 0, "expand-collapse-cursor-row", 3,
1604                                 G_TYPE_BOOLEAN, TRUE,
1605                                 G_TYPE_BOOLEAN, TRUE,
1606                                 G_TYPE_BOOLEAN, FALSE);
1607
1608   gtk_binding_entry_add_signal (binding_set, GDK_KEY_asterisk, 0,
1609                                 "expand-collapse-cursor-row", 3,
1610                                 G_TYPE_BOOLEAN, TRUE,
1611                                 G_TYPE_BOOLEAN, TRUE,
1612                                 G_TYPE_BOOLEAN, TRUE);
1613   gtk_binding_entry_add_signal (binding_set, GDK_KEY_KP_Multiply, 0,
1614                                 "expand-collapse-cursor-row", 3,
1615                                 G_TYPE_BOOLEAN, TRUE,
1616                                 G_TYPE_BOOLEAN, TRUE,
1617                                 G_TYPE_BOOLEAN, TRUE);
1618
1619   gtk_binding_entry_add_signal (binding_set, GDK_KEY_slash, 0,
1620                                 "expand-collapse-cursor-row", 3,
1621                                 G_TYPE_BOOLEAN, TRUE,
1622                                 G_TYPE_BOOLEAN, FALSE,
1623                                 G_TYPE_BOOLEAN, FALSE);
1624   gtk_binding_entry_add_signal (binding_set, GDK_KEY_KP_Divide, 0,
1625                                 "expand-collapse-cursor-row", 3,
1626                                 G_TYPE_BOOLEAN, TRUE,
1627                                 G_TYPE_BOOLEAN, FALSE,
1628                                 G_TYPE_BOOLEAN, FALSE);
1629
1630   /* Not doable on US keyboards */
1631   gtk_binding_entry_add_signal (binding_set, GDK_KEY_plus, 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_KP_Add, 0, "expand-collapse-cursor-row", 3,
1636                                 G_TYPE_BOOLEAN, TRUE,
1637                                 G_TYPE_BOOLEAN, TRUE,
1638                                 G_TYPE_BOOLEAN, FALSE);
1639   gtk_binding_entry_add_signal (binding_set, GDK_KEY_KP_Add, GDK_SHIFT_MASK, "expand-collapse-cursor-row", 3,
1640                                 G_TYPE_BOOLEAN, TRUE,
1641                                 G_TYPE_BOOLEAN, TRUE,
1642                                 G_TYPE_BOOLEAN, TRUE);
1643   gtk_binding_entry_add_signal (binding_set, GDK_KEY_KP_Add, GDK_SHIFT_MASK, "expand-collapse-cursor-row", 3,
1644                                 G_TYPE_BOOLEAN, TRUE,
1645                                 G_TYPE_BOOLEAN, TRUE,
1646                                 G_TYPE_BOOLEAN, TRUE);
1647   gtk_binding_entry_add_signal (binding_set, GDK_KEY_Right, GDK_SHIFT_MASK,
1648                                 "expand-collapse-cursor-row", 3,
1649                                 G_TYPE_BOOLEAN, FALSE,
1650                                 G_TYPE_BOOLEAN, TRUE,
1651                                 G_TYPE_BOOLEAN, TRUE);
1652   gtk_binding_entry_add_signal (binding_set, GDK_KEY_KP_Right, 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   gtk_binding_entry_add_signal (binding_set, GDK_KEY_Right,
1658                                 GDK_CONTROL_MASK | GDK_SHIFT_MASK,
1659                                 "expand-collapse-cursor-row", 3,
1660                                 G_TYPE_BOOLEAN, FALSE,
1661                                 G_TYPE_BOOLEAN, TRUE,
1662                                 G_TYPE_BOOLEAN, TRUE);
1663   gtk_binding_entry_add_signal (binding_set, GDK_KEY_KP_Right,
1664                                 GDK_CONTROL_MASK | GDK_SHIFT_MASK,
1665                                 "expand-collapse-cursor-row", 3,
1666                                 G_TYPE_BOOLEAN, FALSE,
1667                                 G_TYPE_BOOLEAN, TRUE,
1668                                 G_TYPE_BOOLEAN, TRUE);
1669
1670   gtk_binding_entry_add_signal (binding_set, GDK_KEY_minus, 0, "expand-collapse-cursor-row", 3,
1671                                 G_TYPE_BOOLEAN, TRUE,
1672                                 G_TYPE_BOOLEAN, FALSE,
1673                                 G_TYPE_BOOLEAN, FALSE);
1674   gtk_binding_entry_add_signal (binding_set, GDK_KEY_minus, GDK_SHIFT_MASK, "expand-collapse-cursor-row", 3,
1675                                 G_TYPE_BOOLEAN, TRUE,
1676                                 G_TYPE_BOOLEAN, FALSE,
1677                                 G_TYPE_BOOLEAN, TRUE);
1678   gtk_binding_entry_add_signal (binding_set, GDK_KEY_KP_Subtract, 0, "expand-collapse-cursor-row", 3,
1679                                 G_TYPE_BOOLEAN, TRUE,
1680                                 G_TYPE_BOOLEAN, FALSE,
1681                                 G_TYPE_BOOLEAN, FALSE);
1682   gtk_binding_entry_add_signal (binding_set, GDK_KEY_KP_Subtract, GDK_SHIFT_MASK, "expand-collapse-cursor-row", 3,
1683                                 G_TYPE_BOOLEAN, TRUE,
1684                                 G_TYPE_BOOLEAN, FALSE,
1685                                 G_TYPE_BOOLEAN, TRUE);
1686   gtk_binding_entry_add_signal (binding_set, GDK_KEY_Left, GDK_SHIFT_MASK,
1687                                 "expand-collapse-cursor-row", 3,
1688                                 G_TYPE_BOOLEAN, FALSE,
1689                                 G_TYPE_BOOLEAN, FALSE,
1690                                 G_TYPE_BOOLEAN, TRUE);
1691   gtk_binding_entry_add_signal (binding_set, GDK_KEY_KP_Left, 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   gtk_binding_entry_add_signal (binding_set, GDK_KEY_Left,
1697                                 GDK_CONTROL_MASK | GDK_SHIFT_MASK,
1698                                 "expand-collapse-cursor-row", 3,
1699                                 G_TYPE_BOOLEAN, FALSE,
1700                                 G_TYPE_BOOLEAN, FALSE,
1701                                 G_TYPE_BOOLEAN, TRUE);
1702   gtk_binding_entry_add_signal (binding_set, GDK_KEY_KP_Left,
1703                                 GDK_CONTROL_MASK | GDK_SHIFT_MASK,
1704                                 "expand-collapse-cursor-row", 3,
1705                                 G_TYPE_BOOLEAN, FALSE,
1706                                 G_TYPE_BOOLEAN, FALSE,
1707                                 G_TYPE_BOOLEAN, TRUE);
1708
1709   gtk_binding_entry_add_signal (binding_set, GDK_KEY_BackSpace, 0, "select-cursor-parent", 0);
1710   gtk_binding_entry_add_signal (binding_set, GDK_KEY_BackSpace, GDK_CONTROL_MASK, "select-cursor-parent", 0);
1711
1712   gtk_binding_entry_add_signal (binding_set, GDK_KEY_f, GDK_CONTROL_MASK, "start-interactive-search", 0);
1713
1714   gtk_binding_entry_add_signal (binding_set, GDK_KEY_F, GDK_CONTROL_MASK, "start-interactive-search", 0);
1715
1716   g_type_class_add_private (o_class, sizeof (GtkTreeViewPrivate));
1717
1718   gtk_widget_class_set_accessible_type (widget_class, GTK_TYPE_TREE_VIEW_ACCESSIBLE);
1719 }
1720
1721 static void
1722 gtk_tree_view_init (GtkTreeView *tree_view)
1723 {
1724   tree_view->priv = G_TYPE_INSTANCE_GET_PRIVATE (tree_view, GTK_TYPE_TREE_VIEW, GtkTreeViewPrivate);
1725
1726   gtk_widget_set_can_focus (GTK_WIDGET (tree_view), TRUE);
1727   gtk_widget_set_redraw_on_allocate (GTK_WIDGET (tree_view), FALSE);
1728
1729   tree_view->priv->show_expanders = TRUE;
1730   tree_view->priv->draw_keyfocus = TRUE;
1731   tree_view->priv->headers_visible = TRUE;
1732   tree_view->priv->activate_on_single_click = FALSE;
1733
1734   /* We need some padding */
1735   tree_view->priv->dy = 0;
1736   tree_view->priv->cursor_offset = 0;
1737   tree_view->priv->n_columns = 0;
1738   tree_view->priv->header_height = 1;
1739   tree_view->priv->x_drag = 0;
1740   tree_view->priv->drag_pos = -1;
1741   tree_view->priv->minimum_width = 0;
1742   tree_view->priv->natural_width = 0;
1743   tree_view->priv->n_expand_columns = 0;
1744   tree_view->priv->header_has_focus = FALSE;
1745   tree_view->priv->pressed_button = -1;
1746   tree_view->priv->press_start_x = -1;
1747   tree_view->priv->press_start_y = -1;
1748   tree_view->priv->reorderable = FALSE;
1749   tree_view->priv->presize_handler_timer = 0;
1750   tree_view->priv->scroll_sync_timer = 0;
1751   tree_view->priv->fixed_height = -1;
1752   tree_view->priv->fixed_height_mode = FALSE;
1753   tree_view->priv->fixed_height_check = 0;
1754   tree_view->priv->selection = _gtk_tree_selection_new_with_tree_view (tree_view);
1755   tree_view->priv->enable_search = TRUE;
1756   tree_view->priv->search_column = -1;
1757   tree_view->priv->search_position_func = gtk_tree_view_search_position_func;
1758   tree_view->priv->search_equal_func = gtk_tree_view_search_equal_func;
1759   tree_view->priv->search_custom_entry_set = FALSE;
1760   tree_view->priv->typeselect_flush_timeout = 0;
1761   tree_view->priv->init_hadjust_value = TRUE;
1762   tree_view->priv->width = 0;
1763
1764   tree_view->priv->hover_selection = FALSE;
1765   tree_view->priv->hover_expand = FALSE;
1766
1767   tree_view->priv->level_indentation = 0;
1768
1769   tree_view->priv->rubber_banding_enable = FALSE;
1770
1771   tree_view->priv->grid_lines = GTK_TREE_VIEW_GRID_LINES_NONE;
1772   tree_view->priv->tree_lines_enabled = FALSE;
1773
1774   tree_view->priv->tooltip_column = -1;
1775
1776   tree_view->priv->last_button_x = -1;
1777   tree_view->priv->last_button_y = -1;
1778
1779   tree_view->priv->event_last_x = -10000;
1780   tree_view->priv->event_last_y = -10000;
1781
1782   gtk_tree_view_do_set_vadjustment (tree_view, NULL);
1783   gtk_tree_view_do_set_hadjustment (tree_view, NULL);
1784
1785   gtk_style_context_add_class (gtk_widget_get_style_context (GTK_WIDGET (tree_view)),
1786                                GTK_STYLE_CLASS_VIEW);
1787 }
1788
1789 \f
1790
1791 /* GObject Methods
1792  */
1793
1794 static void
1795 gtk_tree_view_set_property (GObject         *object,
1796                             guint            prop_id,
1797                             const GValue    *value,
1798                             GParamSpec      *pspec)
1799 {
1800   GtkTreeView *tree_view;
1801
1802   tree_view = GTK_TREE_VIEW (object);
1803
1804   switch (prop_id)
1805     {
1806     case PROP_MODEL:
1807       gtk_tree_view_set_model (tree_view, g_value_get_object (value));
1808       break;
1809     case PROP_HADJUSTMENT:
1810       gtk_tree_view_do_set_hadjustment (tree_view, g_value_get_object (value));
1811       break;
1812     case PROP_VADJUSTMENT:
1813       gtk_tree_view_do_set_vadjustment (tree_view, g_value_get_object (value));
1814       break;
1815     case PROP_HSCROLL_POLICY:
1816       tree_view->priv->hscroll_policy = g_value_get_enum (value);
1817       gtk_widget_queue_resize (GTK_WIDGET (tree_view));
1818       break;
1819     case PROP_VSCROLL_POLICY:
1820       tree_view->priv->vscroll_policy = g_value_get_enum (value);
1821       gtk_widget_queue_resize (GTK_WIDGET (tree_view));
1822       break;
1823     case PROP_HEADERS_VISIBLE:
1824       gtk_tree_view_set_headers_visible (tree_view, g_value_get_boolean (value));
1825       break;
1826     case PROP_HEADERS_CLICKABLE:
1827       gtk_tree_view_set_headers_clickable (tree_view, g_value_get_boolean (value));
1828       break;
1829     case PROP_EXPANDER_COLUMN:
1830       gtk_tree_view_set_expander_column (tree_view, g_value_get_object (value));
1831       break;
1832     case PROP_REORDERABLE:
1833       gtk_tree_view_set_reorderable (tree_view, g_value_get_boolean (value));
1834       break;
1835     case PROP_RULES_HINT:
1836       gtk_tree_view_set_rules_hint (tree_view, g_value_get_boolean (value));
1837       break;
1838     case PROP_ENABLE_SEARCH:
1839       gtk_tree_view_set_enable_search (tree_view, g_value_get_boolean (value));
1840       break;
1841     case PROP_SEARCH_COLUMN:
1842       gtk_tree_view_set_search_column (tree_view, g_value_get_int (value));
1843       break;
1844     case PROP_FIXED_HEIGHT_MODE:
1845       gtk_tree_view_set_fixed_height_mode (tree_view, g_value_get_boolean (value));
1846       break;
1847     case PROP_HOVER_SELECTION:
1848       tree_view->priv->hover_selection = g_value_get_boolean (value);
1849       break;
1850     case PROP_HOVER_EXPAND:
1851       tree_view->priv->hover_expand = g_value_get_boolean (value);
1852       break;
1853     case PROP_SHOW_EXPANDERS:
1854       gtk_tree_view_set_show_expanders (tree_view, g_value_get_boolean (value));
1855       break;
1856     case PROP_LEVEL_INDENTATION:
1857       tree_view->priv->level_indentation = g_value_get_int (value);
1858       break;
1859     case PROP_RUBBER_BANDING:
1860       tree_view->priv->rubber_banding_enable = g_value_get_boolean (value);
1861       break;
1862     case PROP_ENABLE_GRID_LINES:
1863       gtk_tree_view_set_grid_lines (tree_view, g_value_get_enum (value));
1864       break;
1865     case PROP_ENABLE_TREE_LINES:
1866       gtk_tree_view_set_enable_tree_lines (tree_view, g_value_get_boolean (value));
1867       break;
1868     case PROP_TOOLTIP_COLUMN:
1869       gtk_tree_view_set_tooltip_column (tree_view, g_value_get_int (value));
1870       break;
1871     case PROP_ACTIVATE_ON_SINGLE_CLICK:
1872       gtk_tree_view_set_activate_on_single_click (tree_view, g_value_get_boolean (value));
1873       break;
1874     default:
1875       G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
1876       break;
1877     }
1878 }
1879
1880 static void
1881 gtk_tree_view_get_property (GObject    *object,
1882                             guint       prop_id,
1883                             GValue     *value,
1884                             GParamSpec *pspec)
1885 {
1886   GtkTreeView *tree_view;
1887
1888   tree_view = GTK_TREE_VIEW (object);
1889
1890   switch (prop_id)
1891     {
1892     case PROP_MODEL:
1893       g_value_set_object (value, tree_view->priv->model);
1894       break;
1895     case PROP_HADJUSTMENT:
1896       g_value_set_object (value, tree_view->priv->hadjustment);
1897       break;
1898     case PROP_VADJUSTMENT:
1899       g_value_set_object (value, tree_view->priv->vadjustment);
1900       break;
1901     case PROP_HSCROLL_POLICY:
1902       g_value_set_enum (value, tree_view->priv->hscroll_policy);
1903       break;
1904     case PROP_VSCROLL_POLICY:
1905       g_value_set_enum (value, tree_view->priv->vscroll_policy);
1906       break;
1907     case PROP_HEADERS_VISIBLE:
1908       g_value_set_boolean (value, gtk_tree_view_get_headers_visible (tree_view));
1909       break;
1910     case PROP_HEADERS_CLICKABLE:
1911       g_value_set_boolean (value, gtk_tree_view_get_headers_clickable (tree_view));
1912       break;
1913     case PROP_EXPANDER_COLUMN:
1914       g_value_set_object (value, tree_view->priv->expander_column);
1915       break;
1916     case PROP_REORDERABLE:
1917       g_value_set_boolean (value, tree_view->priv->reorderable);
1918       break;
1919     case PROP_RULES_HINT:
1920       g_value_set_boolean (value, tree_view->priv->has_rules);
1921       break;
1922     case PROP_ENABLE_SEARCH:
1923       g_value_set_boolean (value, tree_view->priv->enable_search);
1924       break;
1925     case PROP_SEARCH_COLUMN:
1926       g_value_set_int (value, tree_view->priv->search_column);
1927       break;
1928     case PROP_FIXED_HEIGHT_MODE:
1929       g_value_set_boolean (value, tree_view->priv->fixed_height_mode);
1930       break;
1931     case PROP_HOVER_SELECTION:
1932       g_value_set_boolean (value, tree_view->priv->hover_selection);
1933       break;
1934     case PROP_HOVER_EXPAND:
1935       g_value_set_boolean (value, tree_view->priv->hover_expand);
1936       break;
1937     case PROP_SHOW_EXPANDERS:
1938       g_value_set_boolean (value, tree_view->priv->show_expanders);
1939       break;
1940     case PROP_LEVEL_INDENTATION:
1941       g_value_set_int (value, tree_view->priv->level_indentation);
1942       break;
1943     case PROP_RUBBER_BANDING:
1944       g_value_set_boolean (value, tree_view->priv->rubber_banding_enable);
1945       break;
1946     case PROP_ENABLE_GRID_LINES:
1947       g_value_set_enum (value, tree_view->priv->grid_lines);
1948       break;
1949     case PROP_ENABLE_TREE_LINES:
1950       g_value_set_boolean (value, tree_view->priv->tree_lines_enabled);
1951       break;
1952     case PROP_TOOLTIP_COLUMN:
1953       g_value_set_int (value, tree_view->priv->tooltip_column);
1954       break;
1955     case PROP_ACTIVATE_ON_SINGLE_CLICK:
1956       g_value_set_boolean (value, tree_view->priv->activate_on_single_click);
1957       break;
1958     default:
1959       G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
1960       break;
1961     }
1962 }
1963
1964 static void
1965 gtk_tree_view_finalize (GObject *object)
1966 {
1967   G_OBJECT_CLASS (gtk_tree_view_parent_class)->finalize (object);
1968 }
1969
1970
1971 static GtkBuildableIface *parent_buildable_iface;
1972
1973 static void
1974 gtk_tree_view_buildable_init (GtkBuildableIface *iface)
1975 {
1976   parent_buildable_iface = g_type_interface_peek_parent (iface);
1977   iface->add_child = gtk_tree_view_buildable_add_child;
1978   iface->get_internal_child = gtk_tree_view_buildable_get_internal_child;
1979 }
1980
1981 static void
1982 gtk_tree_view_buildable_add_child (GtkBuildable *tree_view,
1983                                    GtkBuilder  *builder,
1984                                    GObject     *child,
1985                                    const gchar *type)
1986 {
1987   gtk_tree_view_append_column (GTK_TREE_VIEW (tree_view), GTK_TREE_VIEW_COLUMN (child));
1988 }
1989
1990 static GObject *
1991 gtk_tree_view_buildable_get_internal_child (GtkBuildable      *buildable,
1992                                             GtkBuilder        *builder,
1993                                             const gchar       *childname)
1994 {
1995     if (strcmp (childname, "selection") == 0)
1996       return G_OBJECT (GTK_TREE_VIEW (buildable)->priv->selection);
1997
1998     return parent_buildable_iface->get_internal_child (buildable,
1999                                                        builder,
2000                                                        childname);
2001 }
2002
2003 /* GtkWidget Methods
2004  */
2005
2006 static void
2007 gtk_tree_view_free_rbtree (GtkTreeView *tree_view)
2008 {
2009   _gtk_rbtree_free (tree_view->priv->tree);
2010
2011   tree_view->priv->tree = NULL;
2012   tree_view->priv->button_pressed_node = NULL;
2013   tree_view->priv->button_pressed_tree = NULL;
2014   tree_view->priv->prelight_tree = NULL;
2015   tree_view->priv->prelight_node = NULL;
2016   tree_view->priv->expanded_collapsed_node = NULL;
2017   tree_view->priv->expanded_collapsed_tree = NULL;
2018 }
2019
2020 static void
2021 gtk_tree_view_destroy (GtkWidget *widget)
2022 {
2023   GtkTreeView *tree_view = GTK_TREE_VIEW (widget);
2024   GList *list;
2025
2026   gtk_tree_view_stop_editing (tree_view, TRUE);
2027
2028   if (tree_view->priv->columns != NULL)
2029     {
2030       list = tree_view->priv->columns;
2031       while (list)
2032         {
2033           GtkTreeViewColumn *column;
2034           column = GTK_TREE_VIEW_COLUMN (list->data);
2035           list = list->next;
2036           gtk_tree_view_remove_column (tree_view, column);
2037         }
2038       tree_view->priv->columns = NULL;
2039     }
2040
2041   if (tree_view->priv->tree != NULL)
2042     {
2043       gtk_tree_view_unref_and_check_selection_tree (tree_view, tree_view->priv->tree);
2044
2045       gtk_tree_view_free_rbtree (tree_view);
2046     }
2047
2048   if (tree_view->priv->selection != NULL)
2049     {
2050       _gtk_tree_selection_set_tree_view (tree_view->priv->selection, NULL);
2051       g_object_unref (tree_view->priv->selection);
2052       tree_view->priv->selection = NULL;
2053     }
2054
2055   if (tree_view->priv->scroll_to_path != NULL)
2056     {
2057       gtk_tree_row_reference_free (tree_view->priv->scroll_to_path);
2058       tree_view->priv->scroll_to_path = NULL;
2059     }
2060
2061   if (tree_view->priv->drag_dest_row != NULL)
2062     {
2063       gtk_tree_row_reference_free (tree_view->priv->drag_dest_row);
2064       tree_view->priv->drag_dest_row = NULL;
2065     }
2066
2067   if (tree_view->priv->top_row != NULL)
2068     {
2069       gtk_tree_row_reference_free (tree_view->priv->top_row);
2070       tree_view->priv->top_row = NULL;
2071     }
2072
2073   if (tree_view->priv->column_drop_func_data &&
2074       tree_view->priv->column_drop_func_data_destroy)
2075     {
2076       tree_view->priv->column_drop_func_data_destroy (tree_view->priv->column_drop_func_data);
2077       tree_view->priv->column_drop_func_data = NULL;
2078     }
2079
2080   if (tree_view->priv->destroy_count_destroy &&
2081       tree_view->priv->destroy_count_data)
2082     {
2083       tree_view->priv->destroy_count_destroy (tree_view->priv->destroy_count_data);
2084       tree_view->priv->destroy_count_data = NULL;
2085     }
2086
2087   gtk_tree_row_reference_free (tree_view->priv->anchor);
2088   tree_view->priv->anchor = NULL;
2089
2090   /* destroy interactive search dialog */
2091   if (tree_view->priv->search_window)
2092     {
2093       gtk_widget_destroy (tree_view->priv->search_window);
2094       tree_view->priv->search_window = NULL;
2095       tree_view->priv->search_entry = NULL;
2096       if (tree_view->priv->typeselect_flush_timeout)
2097         {
2098           g_source_remove (tree_view->priv->typeselect_flush_timeout);
2099           tree_view->priv->typeselect_flush_timeout = 0;
2100         }
2101     }
2102
2103   if (tree_view->priv->search_destroy && tree_view->priv->search_user_data)
2104     {
2105       tree_view->priv->search_destroy (tree_view->priv->search_user_data);
2106       tree_view->priv->search_user_data = NULL;
2107     }
2108
2109   if (tree_view->priv->search_position_destroy && tree_view->priv->search_position_user_data)
2110     {
2111       tree_view->priv->search_position_destroy (tree_view->priv->search_position_user_data);
2112       tree_view->priv->search_position_user_data = NULL;
2113     }
2114
2115   if (tree_view->priv->row_separator_destroy && tree_view->priv->row_separator_data)
2116     {
2117       tree_view->priv->row_separator_destroy (tree_view->priv->row_separator_data);
2118       tree_view->priv->row_separator_data = NULL;
2119     }
2120
2121   gtk_tree_view_set_model (tree_view, NULL);
2122
2123   if (tree_view->priv->hadjustment)
2124     {
2125       g_object_unref (tree_view->priv->hadjustment);
2126       tree_view->priv->hadjustment = NULL;
2127     }
2128   if (tree_view->priv->vadjustment)
2129     {
2130       g_object_unref (tree_view->priv->vadjustment);
2131       tree_view->priv->vadjustment = NULL;
2132     }
2133
2134   GTK_WIDGET_CLASS (gtk_tree_view_parent_class)->destroy (widget);
2135 }
2136
2137 /* GtkWidget::map helper */
2138 static void
2139 gtk_tree_view_map_buttons (GtkTreeView *tree_view)
2140 {
2141   GList *list;
2142
2143   g_return_if_fail (gtk_widget_get_mapped (GTK_WIDGET (tree_view)));
2144
2145   if (tree_view->priv->headers_visible)
2146     {
2147       GtkTreeViewColumn *column;
2148       GtkWidget         *button;
2149       GdkWindow         *window;
2150
2151       for (list = tree_view->priv->columns; list; list = list->next)
2152         {
2153           column = list->data;
2154           button = gtk_tree_view_column_get_button (column);
2155
2156           if (gtk_tree_view_column_get_visible (column) && button)
2157             gtk_widget_show_now (button);
2158
2159           if (gtk_widget_get_visible (button) &&
2160               !gtk_widget_get_mapped (button))
2161             gtk_widget_map (button);
2162         }
2163       for (list = tree_view->priv->columns; list; list = list->next)
2164         {
2165           column = list->data;
2166           if (gtk_tree_view_column_get_visible (column) == FALSE)
2167             continue;
2168
2169           window = _gtk_tree_view_column_get_window (column);
2170           if (gtk_tree_view_column_get_resizable (column))
2171             {
2172               gdk_window_raise (window);
2173               gdk_window_show (window);
2174             }
2175           else
2176             gdk_window_hide (window);
2177         }
2178       gdk_window_show (tree_view->priv->header_window);
2179     }
2180 }
2181
2182 static void
2183 gtk_tree_view_map (GtkWidget *widget)
2184 {
2185   GtkTreeView *tree_view = GTK_TREE_VIEW (widget);
2186   GList *tmp_list;
2187
2188   gtk_widget_set_mapped (widget, TRUE);
2189
2190   tmp_list = tree_view->priv->children;
2191   while (tmp_list)
2192     {
2193       GtkTreeViewChild *child = tmp_list->data;
2194       tmp_list = tmp_list->next;
2195
2196       if (gtk_widget_get_visible (child->widget))
2197         {
2198           if (!gtk_widget_get_mapped (child->widget))
2199             gtk_widget_map (child->widget);
2200         }
2201     }
2202   gdk_window_show (tree_view->priv->bin_window);
2203
2204   gtk_tree_view_map_buttons (tree_view);
2205
2206   gdk_window_show (gtk_widget_get_window (widget));
2207 }
2208
2209 static void
2210 gtk_tree_view_ensure_background (GtkTreeView *tree_view)
2211 {
2212   GtkStyleContext *context;
2213
2214   context = gtk_widget_get_style_context (GTK_WIDGET (tree_view));
2215
2216   gtk_style_context_set_background (context, tree_view->priv->bin_window);
2217   gtk_style_context_set_background (context, gtk_widget_get_window (GTK_WIDGET (tree_view)));
2218   gtk_style_context_set_background (context, tree_view->priv->header_window);
2219 }
2220
2221 static void
2222 gtk_tree_view_realize (GtkWidget *widget)
2223 {
2224   GtkAllocation allocation;
2225   GtkTreeView *tree_view = GTK_TREE_VIEW (widget);
2226   GdkWindow *window;
2227   GdkWindowAttr attributes;
2228   GList *tmp_list;
2229   gint attributes_mask;
2230
2231   gtk_widget_set_realized (widget, TRUE);
2232
2233   gtk_widget_get_allocation (widget, &allocation);
2234
2235   /* Make the main, clipping window */
2236   attributes.window_type = GDK_WINDOW_CHILD;
2237   attributes.x = allocation.x;
2238   attributes.y = allocation.y;
2239   attributes.width = allocation.width;
2240   attributes.height = allocation.height;
2241   attributes.wclass = GDK_INPUT_OUTPUT;
2242   attributes.visual = gtk_widget_get_visual (widget);
2243   attributes.event_mask = GDK_VISIBILITY_NOTIFY_MASK;
2244
2245   attributes_mask = GDK_WA_X | GDK_WA_Y | GDK_WA_VISUAL;
2246
2247   window = gdk_window_new (gtk_widget_get_parent_window (widget),
2248                            &attributes, attributes_mask);
2249   gtk_widget_set_window (widget, window);
2250   gtk_widget_register_window (widget, window);
2251
2252   gtk_widget_get_allocation (widget, &allocation);
2253
2254   /* Make the window for the tree */
2255   attributes.x = 0;
2256   attributes.y = gtk_tree_view_get_effective_header_height (tree_view);
2257   attributes.width = MAX (tree_view->priv->width, allocation.width);
2258   attributes.height = allocation.height;
2259   attributes.event_mask = (GDK_EXPOSURE_MASK |
2260                            GDK_SCROLL_MASK |
2261                            GDK_SMOOTH_SCROLL_MASK |
2262                            GDK_POINTER_MOTION_MASK |
2263                            GDK_ENTER_NOTIFY_MASK |
2264                            GDK_LEAVE_NOTIFY_MASK |
2265                            GDK_BUTTON_PRESS_MASK |
2266                            GDK_BUTTON_RELEASE_MASK |
2267                            gtk_widget_get_events (widget));
2268
2269   tree_view->priv->bin_window = gdk_window_new (window,
2270                                                 &attributes, attributes_mask);
2271   gtk_widget_register_window (widget, tree_view->priv->bin_window);
2272
2273   gtk_widget_get_allocation (widget, &allocation);
2274
2275   /* Make the column header window */
2276   attributes.x = 0;
2277   attributes.y = 0;
2278   attributes.width = MAX (tree_view->priv->width, allocation.width);
2279   attributes.height = tree_view->priv->header_height;
2280   attributes.event_mask = (GDK_EXPOSURE_MASK |
2281                            GDK_SCROLL_MASK |
2282                            GDK_ENTER_NOTIFY_MASK |
2283                            GDK_LEAVE_NOTIFY_MASK |
2284                            GDK_BUTTON_PRESS_MASK |
2285                            GDK_BUTTON_RELEASE_MASK |
2286                            GDK_KEY_PRESS_MASK |
2287                            GDK_KEY_RELEASE_MASK |
2288                            gtk_widget_get_events (widget));
2289
2290   tree_view->priv->header_window = gdk_window_new (window,
2291                                                    &attributes, attributes_mask);
2292   gtk_widget_register_window (widget, tree_view->priv->header_window);
2293
2294   gtk_tree_view_ensure_background (tree_view);
2295
2296   tmp_list = tree_view->priv->children;
2297   while (tmp_list)
2298     {
2299       GtkTreeViewChild *child = tmp_list->data;
2300       tmp_list = tmp_list->next;
2301
2302       gtk_widget_set_parent_window (child->widget, tree_view->priv->bin_window);
2303     }
2304
2305   for (tmp_list = tree_view->priv->columns; tmp_list; tmp_list = tmp_list->next)
2306     _gtk_tree_view_column_realize_button (GTK_TREE_VIEW_COLUMN (tmp_list->data));
2307
2308   /* Need to call those here, since they create GCs */
2309   gtk_tree_view_set_grid_lines (tree_view, tree_view->priv->grid_lines);
2310   gtk_tree_view_set_enable_tree_lines (tree_view, tree_view->priv->tree_lines_enabled);
2311
2312   install_presize_handler (tree_view);
2313 }
2314
2315 static void
2316 gtk_tree_view_unrealize (GtkWidget *widget)
2317 {
2318   GtkTreeView *tree_view = GTK_TREE_VIEW (widget);
2319   GtkTreeViewPrivate *priv = tree_view->priv;
2320   GList *list;
2321
2322   if (priv->scroll_timeout != 0)
2323     {
2324       g_source_remove (priv->scroll_timeout);
2325       priv->scroll_timeout = 0;
2326     }
2327
2328   if (priv->auto_expand_timeout != 0)
2329     {
2330       g_source_remove (priv->auto_expand_timeout);
2331       priv->auto_expand_timeout = 0;
2332     }
2333
2334   if (priv->open_dest_timeout != 0)
2335     {
2336       g_source_remove (priv->open_dest_timeout);
2337       priv->open_dest_timeout = 0;
2338     }
2339
2340   if (priv->presize_handler_timer != 0)
2341     {
2342       g_source_remove (priv->presize_handler_timer);
2343       priv->presize_handler_timer = 0;
2344     }
2345
2346   if (priv->validate_rows_timer != 0)
2347     {
2348       g_source_remove (priv->validate_rows_timer);
2349       priv->validate_rows_timer = 0;
2350     }
2351
2352   if (priv->scroll_sync_timer != 0)
2353     {
2354       g_source_remove (priv->scroll_sync_timer);
2355       priv->scroll_sync_timer = 0;
2356     }
2357
2358   if (priv->typeselect_flush_timeout)
2359     {
2360       g_source_remove (priv->typeselect_flush_timeout);
2361       priv->typeselect_flush_timeout = 0;
2362     }
2363
2364   for (list = priv->columns; list; list = list->next)
2365     _gtk_tree_view_column_unrealize_button (GTK_TREE_VIEW_COLUMN (list->data));
2366
2367   gtk_widget_unregister_window (widget, priv->bin_window);
2368   gdk_window_destroy (priv->bin_window);
2369   priv->bin_window = NULL;
2370
2371   gtk_widget_unregister_window (widget, priv->header_window);
2372   gdk_window_destroy (priv->header_window);
2373   priv->header_window = NULL;
2374
2375   if (priv->drag_window)
2376     {
2377       gtk_widget_unregister_window (widget, priv->drag_window);
2378       gdk_window_destroy (priv->drag_window);
2379       priv->drag_window = NULL;
2380     }
2381
2382   if (priv->drag_highlight_window)
2383     {
2384       gtk_widget_unregister_window (widget, priv->drag_highlight_window);
2385       gdk_window_destroy (priv->drag_highlight_window);
2386       priv->drag_highlight_window = NULL;
2387     }
2388
2389   GTK_WIDGET_CLASS (gtk_tree_view_parent_class)->unrealize (widget);
2390 }
2391
2392 /* GtkWidget::get_preferred_height helper */
2393 static void
2394 gtk_tree_view_update_height (GtkTreeView *tree_view)
2395 {
2396   GList *list;
2397
2398   tree_view->priv->header_height = 0;
2399
2400   for (list = tree_view->priv->columns; list; list = list->next)
2401     {
2402       GtkRequisition     requisition;
2403       GtkTreeViewColumn *column = list->data;
2404       GtkWidget         *button = gtk_tree_view_column_get_button (column);
2405
2406       if (button == NULL)
2407         continue;
2408
2409       gtk_widget_get_preferred_size (button, &requisition, NULL);
2410       tree_view->priv->header_height = MAX (tree_view->priv->header_height, requisition.height);
2411     }
2412
2413   if (tree_view->priv->tree == NULL)
2414     tree_view->priv->height = 0;
2415   else
2416     tree_view->priv->height = tree_view->priv->tree->root->offset;
2417 }
2418
2419 static void
2420 gtk_tree_view_get_preferred_width (GtkWidget *widget,
2421                                    gint      *minimum,
2422                                    gint      *natural)
2423 {
2424   GtkTreeView *tree_view = GTK_TREE_VIEW (widget);
2425   GList *list;
2426   GtkTreeViewColumn *column;
2427   gint column_minimum, column_natural;
2428
2429   /* we validate some rows initially just to make sure we have some size.
2430    * In practice, with a lot of static lists, this should get a good width.
2431    */
2432   do_validate_rows (tree_view, FALSE);
2433
2434   tree_view->priv->minimum_width = 0;
2435   tree_view->priv->natural_width = 0;
2436   tree_view->priv->n_expand_columns = 0;
2437
2438   /* keep this in sync with size_allocate below */
2439   for (list = tree_view->priv->columns; list; list = list->next)
2440     {
2441       column = list->data;
2442       if (!gtk_tree_view_column_get_visible (column) || column == tree_view->priv->drag_column)
2443         continue;
2444
2445       _gtk_tree_view_column_request_width (column, &column_minimum, &column_natural);
2446       tree_view->priv->minimum_width += column_minimum;
2447       tree_view->priv->natural_width += column_natural;
2448
2449       if (gtk_tree_view_column_get_expand (column))
2450         tree_view->priv->n_expand_columns++;
2451     }
2452
2453   if (minimum != NULL)
2454     *minimum = tree_view->priv->minimum_width;
2455   if (natural != NULL)
2456     *natural = tree_view->priv->natural_width;
2457 }
2458
2459 static void
2460 gtk_tree_view_get_preferred_height (GtkWidget *widget,
2461                                     gint      *minimum,
2462                                     gint      *natural)
2463 {
2464   GtkTreeView *tree_view = GTK_TREE_VIEW (widget);
2465   gint height;
2466
2467   gtk_tree_view_update_height (tree_view);
2468
2469   height = tree_view->priv->height + gtk_tree_view_get_effective_header_height (tree_view);
2470
2471   if (minimum != NULL)
2472     *minimum = height;
2473   if (natural != NULL)
2474     *natural = height;
2475 }
2476
2477 static void
2478 gtk_tree_view_modify_column_width (GtkTreeView       *tree_view,
2479                                    GtkTreeViewColumn *column,
2480                                    gint               width)
2481 {
2482   gboolean is_expand;
2483   gint n_expand_others;
2484   gint minimum, natural, natural_others;
2485   gint expand;
2486
2487   is_expand = gtk_tree_view_column_get_expand (column);
2488   n_expand_others = tree_view->priv->n_expand_columns - (is_expand ? 1 : 0);
2489
2490   _gtk_tree_view_column_request_width (column, &minimum, &natural);
2491   natural_others = tree_view->priv->natural_width - natural;
2492
2493   if (natural_others + width < tree_view->priv->width)
2494     {
2495       /* There is extra space that needs to be taken up by letting some other
2496        * column(s) expand: by default, the last column. */
2497       if (!n_expand_others)
2498         {
2499           GList *last = g_list_last (tree_view->priv->columns);
2500           while (!gtk_tree_view_column_get_visible (last->data))
2501             last = last->prev;
2502
2503           if (column == last->data)
2504             return;
2505
2506           gtk_tree_view_column_set_expand (last->data, TRUE);
2507           n_expand_others++;
2508         }
2509
2510       /* Now try to make this column expandable also.  Solving the following
2511        * equations reveals what the natural width should be to achieve the
2512        * desired width after expanding:
2513        *
2514        *   1. natural + expand = desired_width
2515        *   2. natural + natural_others + expand * (n_expand_others + 1) = total_width
2516        *
2517        * Solution:
2518        *   expand = (total_width - natural_others - desired_width) / n_expand_others
2519        *
2520        * It is possible for the solved natural width to be less than the
2521        * minimum; in that case, we cannot let the column expand.
2522        */
2523       expand = (tree_view->priv->width - natural_others - width) / n_expand_others;
2524
2525       if (minimum + expand > width)
2526         {
2527           if (is_expand)
2528             gtk_tree_view_column_set_expand (column, FALSE);
2529         }
2530       else
2531         {
2532           if (!is_expand)
2533             gtk_tree_view_column_set_expand (column, TRUE);
2534
2535           width -= expand;
2536         }
2537     }
2538
2539   gtk_tree_view_column_set_fixed_width (column, width);
2540 }
2541
2542 static int
2543 gtk_tree_view_calculate_width_before_expander (GtkTreeView *tree_view)
2544 {
2545   int width = 0;
2546   GList *list;
2547   gboolean rtl;
2548
2549   rtl = (gtk_widget_get_direction (GTK_WIDGET (tree_view)) == GTK_TEXT_DIR_RTL);
2550   for (list = (rtl ? g_list_last (tree_view->priv->columns) : g_list_first (tree_view->priv->columns));
2551        list->data != tree_view->priv->expander_column;
2552        list = (rtl ? list->prev : list->next))
2553     {
2554       GtkTreeViewColumn *column = list->data;
2555
2556       width += gtk_tree_view_column_get_width (column);
2557     }
2558
2559   return width;
2560 }
2561
2562 /* GtkWidget::size_allocate helper */
2563 static void
2564 gtk_tree_view_size_allocate_columns (GtkWidget *widget,
2565                                      gboolean  *width_changed)
2566 {
2567   GtkTreeView *tree_view;
2568   GList *list, *first_column, *last_column;
2569   GtkTreeViewColumn *column;
2570   GtkAllocation widget_allocation;
2571   gint minimum_width, natural_width, n_expand_columns, width;
2572   gint column_minimum, column_natural, column_width;
2573   gboolean rtl;
2574
2575   tree_view = GTK_TREE_VIEW (widget);
2576
2577   for (last_column = g_list_last (tree_view->priv->columns);
2578        last_column &&
2579        !(gtk_tree_view_column_get_visible (GTK_TREE_VIEW_COLUMN (last_column->data)));
2580        last_column = last_column->prev)
2581     ;
2582   if (last_column == NULL)
2583     return;
2584
2585   for (first_column = g_list_first (tree_view->priv->columns);
2586        first_column &&
2587        !(gtk_tree_view_column_get_visible (GTK_TREE_VIEW_COLUMN (first_column->data)));
2588        first_column = first_column->next)
2589     ;
2590
2591   rtl = (gtk_widget_get_direction (widget) == GTK_TEXT_DIR_RTL);
2592
2593   gtk_widget_get_allocation (widget, &widget_allocation);
2594
2595   minimum_width = tree_view->priv->minimum_width;
2596   natural_width = tree_view->priv->natural_width;
2597   n_expand_columns = tree_view->priv->n_expand_columns;
2598
2599   width = MAX (widget_allocation.width, minimum_width);
2600
2601   /* We change the width here.  The user might have been resizing columns,
2602    * which changes the total width of the tree view.  This is of
2603    * importance for getting the horizontal scroll bar right.
2604    */
2605   if (tree_view->priv->width != width)
2606     {
2607       tree_view->priv->width = width;
2608       if (width_changed)
2609         *width_changed = TRUE;
2610     }
2611
2612   /* iterate through columns in reverse order */
2613   for (list = (rtl ? first_column : last_column);
2614        list != (rtl ? last_column->next : first_column->prev);
2615        list = (rtl ? list->next : list->prev))
2616     {
2617       column = list->data;
2618
2619       if (!gtk_tree_view_column_get_visible (column) || column == tree_view->priv->drag_column)
2620         continue;
2621
2622       _gtk_tree_view_column_request_width (column, &column_minimum, &column_natural);
2623
2624       column_width = column_natural;
2625
2626       if (width > natural_width)
2627         {
2628           /* We need to expand some columns.  If there are none marked to
2629            * expand, give all the extra space to the last column. */
2630           if (n_expand_columns == 0)
2631             {
2632               column_width = column_natural + (width - natural_width);
2633             }
2634           else if (gtk_tree_view_column_get_expand (column))
2635             {
2636               column_width = column_natural + (width - natural_width) / n_expand_columns;
2637               n_expand_columns--;
2638             }
2639         }
2640       else if (width < natural_width)
2641         {
2642           /* We need to shrink some columns.  Starting with later columns,
2643            * shrink each one down to its minimum width as necessary. */
2644           column_width = MAX (column_natural + (width - natural_width), column_minimum);
2645         }
2646
2647       _gtk_tree_view_column_allocate (column, width - column_width, column_width);
2648
2649       minimum_width -= column_minimum;
2650       natural_width -= column_natural;
2651       width -= column_width;
2652     }
2653 }
2654
2655 /* GtkWidget::size_allocate helper */
2656 static void
2657 gtk_tree_view_size_allocate_drag_column (GtkWidget *widget)
2658 {
2659   GtkTreeView *tree_view = GTK_TREE_VIEW (widget);
2660   GtkAllocation drag_allocation;
2661   GtkWidget *button;
2662
2663   if (tree_view->priv->drag_column == NULL)
2664     return;
2665
2666   button = gtk_tree_view_column_get_button (tree_view->priv->drag_column);
2667
2668   drag_allocation.x = 0;
2669   drag_allocation.y = 0;
2670   drag_allocation.width = gdk_window_get_width (tree_view->priv->drag_window);
2671   drag_allocation.height = gdk_window_get_height (tree_view->priv->drag_window);
2672   gtk_widget_size_allocate (button, &drag_allocation);
2673 }
2674
2675 static void
2676 gtk_tree_view_size_allocate (GtkWidget     *widget,
2677                              GtkAllocation *allocation)
2678 {
2679   GtkAllocation widget_allocation;
2680   GtkTreeView *tree_view = GTK_TREE_VIEW (widget);
2681   GList *tmp_list;
2682   gboolean width_changed = FALSE;
2683   gint old_width;
2684
2685   gtk_widget_get_allocation (widget, &widget_allocation);
2686   old_width = widget_allocation.width;
2687   if (allocation->width != widget_allocation.width)
2688     width_changed = TRUE;
2689
2690   gtk_widget_set_allocation (widget, allocation);
2691
2692   tmp_list = tree_view->priv->children;
2693
2694   while (tmp_list)
2695     {
2696       GtkAllocation allocation;
2697
2698       GtkTreeViewChild *child = tmp_list->data;
2699       tmp_list = tmp_list->next;
2700
2701       /* totally ignore our child's requisition */
2702       allocation.x = child->x;
2703       allocation.y = child->y;
2704       allocation.width = child->width;
2705       allocation.height = child->height;
2706       gtk_widget_size_allocate (child->widget, &allocation);
2707     }
2708
2709   /* We size-allocate the columns first because the width of the
2710    * tree view (used in updating the adjustments below) might change.
2711    */
2712   gtk_tree_view_size_allocate_columns (widget, &width_changed);
2713   gtk_tree_view_size_allocate_drag_column (widget);
2714
2715   g_object_freeze_notify (G_OBJECT (tree_view->priv->hadjustment));
2716   gtk_adjustment_set_page_size (tree_view->priv->hadjustment,
2717                                 allocation->width);
2718   gtk_adjustment_set_page_increment (tree_view->priv->hadjustment,
2719                                      allocation->width * 0.9);
2720   gtk_adjustment_set_step_increment (tree_view->priv->hadjustment,
2721                                      allocation->width * 0.1);
2722   gtk_adjustment_set_lower (tree_view->priv->hadjustment, 0);
2723   gtk_adjustment_set_upper (tree_view->priv->hadjustment,
2724                             MAX (gtk_adjustment_get_page_size (tree_view->priv->hadjustment),
2725                                  tree_view->priv->width));
2726   g_object_thaw_notify (G_OBJECT (tree_view->priv->hadjustment));
2727
2728   if (gtk_widget_get_direction(widget) == GTK_TEXT_DIR_RTL)
2729     {
2730       if (allocation->width < tree_view->priv->width)
2731         {
2732           if (tree_view->priv->init_hadjust_value)
2733             {
2734               gtk_adjustment_set_value (tree_view->priv->hadjustment,
2735                                         MAX (tree_view->priv->width -
2736                                              allocation->width, 0));
2737               tree_view->priv->init_hadjust_value = FALSE;
2738             }
2739           else if (allocation->width != old_width)
2740             {
2741               gtk_adjustment_set_value (tree_view->priv->hadjustment,
2742                                         CLAMP (gtk_adjustment_get_value (tree_view->priv->hadjustment) - allocation->width + old_width,
2743                                                0,
2744                                                tree_view->priv->width - allocation->width));
2745             }
2746         }
2747       else
2748         {
2749           gtk_adjustment_set_value (tree_view->priv->hadjustment, 0);
2750           tree_view->priv->init_hadjust_value = TRUE;
2751         }
2752     }
2753   else
2754     if (gtk_adjustment_get_value (tree_view->priv->hadjustment) + allocation->width > tree_view->priv->width)
2755       gtk_adjustment_set_value (tree_view->priv->hadjustment,
2756                                 MAX (tree_view->priv->width -
2757                                      allocation->width, 0));
2758
2759   g_object_freeze_notify (G_OBJECT (tree_view->priv->vadjustment));
2760   gtk_adjustment_set_page_size (tree_view->priv->vadjustment,
2761                                 allocation->height -
2762                                 gtk_tree_view_get_effective_header_height (tree_view));
2763   gtk_adjustment_set_step_increment (tree_view->priv->vadjustment,
2764                                      gtk_adjustment_get_page_size (tree_view->priv->vadjustment) * 0.1);
2765   gtk_adjustment_set_page_increment (tree_view->priv->vadjustment,
2766                                      gtk_adjustment_get_page_size (tree_view->priv->vadjustment) * 0.9);
2767   gtk_adjustment_set_lower (tree_view->priv->vadjustment, 0);
2768   gtk_adjustment_set_upper (tree_view->priv->vadjustment,
2769                             MAX (gtk_adjustment_get_page_size (tree_view->priv->vadjustment),
2770                                  tree_view->priv->height));
2771   g_object_thaw_notify (G_OBJECT (tree_view->priv->vadjustment));
2772
2773   /* now the adjustments and window sizes are in sync, we can sync toprow/dy again */
2774   if (tree_view->priv->height <= gtk_adjustment_get_page_size (tree_view->priv->vadjustment))
2775     gtk_adjustment_set_value (GTK_ADJUSTMENT (tree_view->priv->vadjustment), 0);
2776   else if (gtk_adjustment_get_value (tree_view->priv->vadjustment) + gtk_adjustment_get_page_size (tree_view->priv->vadjustment) > tree_view->priv->height)
2777     gtk_adjustment_set_value (GTK_ADJUSTMENT (tree_view->priv->vadjustment),
2778                               tree_view->priv->height - gtk_adjustment_get_page_size (tree_view->priv->vadjustment));
2779   else if (gtk_tree_row_reference_valid (tree_view->priv->top_row))
2780     gtk_tree_view_top_row_to_dy (tree_view);
2781   else
2782     gtk_tree_view_dy_to_top_row (tree_view);
2783
2784   if (gtk_widget_get_realized (widget))
2785     {
2786       gdk_window_move_resize (gtk_widget_get_window (widget),
2787                               allocation->x, allocation->y,
2788                               allocation->width, allocation->height);
2789       gdk_window_move_resize (tree_view->priv->header_window,
2790                               - (gint) gtk_adjustment_get_value (tree_view->priv->hadjustment),
2791                               0,
2792                               MAX (tree_view->priv->width, allocation->width),
2793                               tree_view->priv->header_height);
2794       gdk_window_move_resize (tree_view->priv->bin_window,
2795                               - (gint) gtk_adjustment_get_value (tree_view->priv->hadjustment),
2796                               gtk_tree_view_get_effective_header_height (tree_view),
2797                               MAX (tree_view->priv->width, allocation->width),
2798                               allocation->height - gtk_tree_view_get_effective_header_height (tree_view));
2799
2800       if (tree_view->priv->tree == NULL)
2801         invalidate_empty_focus (tree_view);
2802
2803       if (width_changed && tree_view->priv->expander_column)
2804         {
2805           /* Might seem awkward, but is the best heuristic I could come up
2806            * with.  Only if the width of the columns before the expander
2807            * changes, we will update the prelight status.  It is this
2808            * width that makes the expander move vertically.  Always updating
2809            * prelight status causes trouble with hover selections.
2810            */
2811           gint width_before_expander;
2812
2813           width_before_expander = gtk_tree_view_calculate_width_before_expander (tree_view);
2814
2815           if (tree_view->priv->prev_width_before_expander
2816               != width_before_expander)
2817               update_prelight (tree_view,
2818                                tree_view->priv->event_last_x,
2819                                tree_view->priv->event_last_y);
2820
2821           tree_view->priv->prev_width_before_expander = width_before_expander;
2822         }
2823     }
2824 }
2825
2826 /* Grabs the focus and unsets the GTK_TREE_VIEW_DRAW_KEYFOCUS flag */
2827 static void
2828 grab_focus_and_unset_draw_keyfocus (GtkTreeView *tree_view)
2829 {
2830   GtkWidget *widget = GTK_WIDGET (tree_view);
2831
2832   if (gtk_widget_get_can_focus (widget) && !gtk_widget_has_focus (widget))
2833     gtk_widget_grab_focus (widget);
2834   tree_view->priv->draw_keyfocus = 0;
2835 }
2836
2837 static inline gboolean
2838 row_is_separator (GtkTreeView *tree_view,
2839                   GtkTreeIter *iter,
2840                   GtkTreePath *path)
2841 {
2842   gboolean is_separator = FALSE;
2843
2844   if (tree_view->priv->row_separator_func)
2845     {
2846       GtkTreeIter tmpiter;
2847
2848       if (iter)
2849         tmpiter = *iter;
2850       else
2851         {
2852           if (!gtk_tree_model_get_iter (tree_view->priv->model, &tmpiter, path))
2853             return FALSE;
2854         }
2855
2856       is_separator = tree_view->priv->row_separator_func (tree_view->priv->model,
2857                                                           &tmpiter,
2858                                                           tree_view->priv->row_separator_data);
2859     }
2860
2861   return is_separator;
2862 }
2863
2864 static int
2865 gtk_tree_view_get_expander_size (GtkTreeView *tree_view)
2866 {
2867   gint expander_size;
2868
2869   gtk_widget_style_get (GTK_WIDGET (tree_view),
2870                         "expander-size", &expander_size,
2871                         NULL);
2872   expander_size += EXPANDER_EXTRA_PADDING;
2873
2874   return expander_size;
2875 }
2876
2877 static gboolean
2878 gtk_tree_view_button_press (GtkWidget      *widget,
2879                             GdkEventButton *event)
2880 {
2881   GtkTreeView *tree_view = GTK_TREE_VIEW (widget);
2882   GList *list;
2883   GtkTreeViewColumn *column = NULL;
2884   gint i;
2885   GdkRectangle background_area;
2886   GdkRectangle cell_area;
2887   gint vertical_separator;
2888   gint horizontal_separator;
2889   gboolean path_is_selectable;
2890   gboolean rtl;
2891
2892   rtl = (gtk_widget_get_direction (widget) == GTK_TEXT_DIR_RTL);
2893   gtk_tree_view_stop_editing (tree_view, FALSE);
2894   gtk_widget_style_get (widget,
2895                         "vertical-separator", &vertical_separator,
2896                         "horizontal-separator", &horizontal_separator,
2897                         NULL);
2898
2899   /* Don't handle extra mouse buttons events, let them bubble up */
2900   if (event->button > 5)
2901     return FALSE;
2902
2903   /* Because grab_focus can cause reentrancy, we delay grab_focus until after
2904    * we're done handling the button press.
2905    */
2906
2907   if (event->window == tree_view->priv->bin_window)
2908     {
2909       GtkRBNode *node;
2910       GtkRBTree *tree;
2911       GtkTreePath *path;
2912       gint depth;
2913       gint new_y;
2914       gint y_offset;
2915       gint dval;
2916       gint pre_val, aft_val;
2917       GtkTreeViewColumn *column = NULL;
2918       gint column_handled_click = FALSE;
2919       gboolean row_double_click = FALSE;
2920       gboolean rtl;
2921       gboolean node_selected;
2922       GdkModifierType extend_mod_mask;
2923       GdkModifierType modify_mod_mask;
2924
2925       /* Empty tree? */
2926       if (tree_view->priv->tree == NULL)
2927         {
2928           grab_focus_and_unset_draw_keyfocus (tree_view);
2929           return TRUE;
2930         }
2931
2932       /* are we in an arrow? */
2933       if (tree_view->priv->prelight_node &&
2934           tree_view->priv->arrow_prelit &&
2935           gtk_tree_view_draw_expanders (tree_view))
2936         {
2937           if (event->button == GDK_BUTTON_PRIMARY)
2938             {
2939               gtk_grab_add (widget);
2940               tree_view->priv->button_pressed_node = tree_view->priv->prelight_node;
2941               tree_view->priv->button_pressed_tree = tree_view->priv->prelight_tree;
2942               gtk_tree_view_queue_draw_arrow (GTK_TREE_VIEW (widget),
2943                                               tree_view->priv->prelight_tree,
2944                                               tree_view->priv->prelight_node);
2945             }
2946
2947           grab_focus_and_unset_draw_keyfocus (tree_view);
2948           return TRUE;
2949         }
2950
2951       /* find the node that was clicked */
2952       new_y = TREE_WINDOW_Y_TO_RBTREE_Y(tree_view, event->y);
2953       if (new_y < 0)
2954         new_y = 0;
2955       y_offset = -_gtk_rbtree_find_offset (tree_view->priv->tree, new_y, &tree, &node);
2956
2957       if (node == NULL)
2958         {
2959           /* We clicked in dead space */
2960           grab_focus_and_unset_draw_keyfocus (tree_view);
2961           return TRUE;
2962         }
2963
2964       /* Get the path and the node */
2965       path = _gtk_tree_path_new_from_rbtree (tree, node);
2966       path_is_selectable = !row_is_separator (tree_view, NULL, path);
2967
2968       if (!path_is_selectable)
2969         {
2970           gtk_tree_path_free (path);
2971           grab_focus_and_unset_draw_keyfocus (tree_view);
2972           return TRUE;
2973         }
2974
2975       depth = gtk_tree_path_get_depth (path);
2976       background_area.y = y_offset + event->y;
2977       background_area.height = gtk_tree_view_get_row_height (tree_view, node);
2978       background_area.x = 0;
2979
2980
2981       /* Let the column have a chance at selecting it. */
2982       rtl = (gtk_widget_get_direction (GTK_WIDGET (tree_view)) == GTK_TEXT_DIR_RTL);
2983       for (list = (rtl ? g_list_last (tree_view->priv->columns) : g_list_first (tree_view->priv->columns));
2984            list; list = (rtl ? list->prev : list->next))
2985         {
2986           GtkTreeViewColumn *candidate = list->data;
2987
2988           if (!gtk_tree_view_column_get_visible (candidate))
2989             continue;
2990
2991           background_area.width = gtk_tree_view_column_get_width (candidate);
2992           if ((background_area.x > (gint) event->x) ||
2993               (background_area.x + background_area.width <= (gint) event->x))
2994             {
2995               background_area.x += background_area.width;
2996               continue;
2997             }
2998
2999           /* we found the focus column */
3000           column = candidate;
3001           cell_area = background_area;
3002           cell_area.width -= horizontal_separator;
3003           cell_area.height -= vertical_separator;
3004           cell_area.x += horizontal_separator/2;
3005           cell_area.y += vertical_separator/2;
3006           if (gtk_tree_view_is_expander_column (tree_view, column))
3007             {
3008               if (!rtl)
3009                 cell_area.x += (depth - 1) * tree_view->priv->level_indentation;
3010               cell_area.width -= (depth - 1) * tree_view->priv->level_indentation;
3011
3012               if (gtk_tree_view_draw_expanders (tree_view))
3013                 {
3014                   gint expander_size = gtk_tree_view_get_expander_size (tree_view);
3015                   if (!rtl)
3016                     cell_area.x += depth * expander_size;
3017                   cell_area.width -= depth * expander_size;
3018                 }
3019             }
3020           break;
3021         }
3022
3023       if (column == NULL)
3024         {
3025           gtk_tree_path_free (path);
3026           grab_focus_and_unset_draw_keyfocus (tree_view);
3027           return FALSE;
3028         }
3029
3030       _gtk_tree_view_set_focus_column (tree_view, column);
3031
3032       /* decide if we edit */
3033       if (event->type == GDK_BUTTON_PRESS && event->button == GDK_BUTTON_PRIMARY &&
3034           !(event->state & gtk_accelerator_get_default_mod_mask ()))
3035         {
3036           GtkTreePath *anchor;
3037           GtkTreeIter iter;
3038
3039           gtk_tree_model_get_iter (tree_view->priv->model, &iter, path);
3040           gtk_tree_view_column_cell_set_cell_data (column,
3041                                                    tree_view->priv->model,
3042                                                    &iter,
3043                                                    GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_PARENT),
3044                                                    node->children?TRUE:FALSE);
3045
3046           if (tree_view->priv->anchor)
3047             anchor = gtk_tree_row_reference_get_path (tree_view->priv->anchor);
3048           else
3049             anchor = NULL;
3050
3051           if ((anchor && !gtk_tree_path_compare (anchor, path))
3052               || !_gtk_tree_view_column_has_editable_cell (column))
3053             {
3054               GtkCellEditable *cell_editable = NULL;
3055
3056               /* FIXME: get the right flags */
3057               guint flags = 0;
3058
3059               if (_gtk_tree_view_column_cell_event (column,
3060                                                     (GdkEvent *)event,
3061                                                     &cell_area, flags))
3062                 {
3063                   GtkCellArea *area = gtk_cell_layout_get_area (GTK_CELL_LAYOUT (column));
3064                   cell_editable = gtk_cell_area_get_edit_widget (area);
3065
3066                   if (cell_editable != NULL)
3067                     {
3068                       gtk_tree_path_free (path);
3069                       gtk_tree_path_free (anchor);
3070                       return TRUE;
3071                     }
3072                   column_handled_click = TRUE;
3073                 }
3074             }
3075           if (anchor)
3076             gtk_tree_path_free (anchor);
3077         }
3078
3079       extend_mod_mask =
3080         gtk_widget_get_modifier_mask (widget, GDK_MODIFIER_INTENT_EXTEND_SELECTION);
3081
3082       modify_mod_mask =
3083         gtk_widget_get_modifier_mask (widget, GDK_MODIFIER_INTENT_MODIFY_SELECTION);
3084
3085       /* select */
3086       node_selected = GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_SELECTED);
3087       pre_val = gtk_adjustment_get_value (tree_view->priv->vadjustment);
3088
3089       /* we only handle selection modifications on the first button press
3090        */
3091       if (event->type == GDK_BUTTON_PRESS)
3092         {
3093           GtkCellRenderer *focus_cell;
3094
3095           if ((event->state & modify_mod_mask) == modify_mod_mask)
3096             tree_view->priv->modify_selection_pressed = TRUE;
3097           if ((event->state & extend_mod_mask) == extend_mod_mask)
3098             tree_view->priv->extend_selection_pressed = TRUE;
3099
3100           /* We update the focus cell here, this is also needed if the
3101            * column does not contain an editable cell.  In this case,
3102            * GtkCellArea did not receive the event for processing (and
3103            * could not update the focus cell).
3104            */
3105           focus_cell = _gtk_tree_view_column_get_cell_at_pos (column,
3106                                                               &cell_area,
3107                                                               &background_area,
3108                                                               event->x,
3109                                                               event->y);
3110
3111           if (focus_cell)
3112             gtk_tree_view_column_focus_cell (column, focus_cell);
3113
3114           if (event->state & modify_mod_mask)
3115             {
3116               gtk_tree_view_real_set_cursor (tree_view, path, CLAMP_NODE);
3117               gtk_tree_view_real_toggle_cursor_row (tree_view);
3118             }
3119           else if (event->state & extend_mod_mask)
3120             {
3121               gtk_tree_view_real_set_cursor (tree_view, path, CLAMP_NODE);
3122               gtk_tree_view_real_select_cursor_row (tree_view, FALSE);
3123             }
3124           else
3125             {
3126               gtk_tree_view_real_set_cursor (tree_view, path, CLEAR_AND_SELECT | CLAMP_NODE);
3127             }
3128
3129           tree_view->priv->modify_selection_pressed = FALSE;
3130           tree_view->priv->extend_selection_pressed = FALSE;
3131         }
3132
3133       /* the treeview may have been scrolled because of _set_cursor,
3134        * correct here
3135        */
3136
3137       aft_val = gtk_adjustment_get_value (tree_view->priv->vadjustment);
3138       dval = pre_val - aft_val;
3139
3140       cell_area.y += dval;
3141       background_area.y += dval;
3142
3143       /* Save press to possibly begin a drag
3144        */
3145       if (!column_handled_click &&
3146           !tree_view->priv->in_grab &&
3147           tree_view->priv->pressed_button < 0)
3148         {
3149           tree_view->priv->pressed_button = event->button;
3150           tree_view->priv->press_start_x = event->x;
3151           tree_view->priv->press_start_y = event->y;
3152
3153           if (tree_view->priv->rubber_banding_enable
3154               && !node_selected
3155               && gtk_tree_selection_get_mode (tree_view->priv->selection) == GTK_SELECTION_MULTIPLE)
3156             {
3157               tree_view->priv->press_start_y += tree_view->priv->dy;
3158               tree_view->priv->rubber_band_x = event->x;
3159               tree_view->priv->rubber_band_y = event->y + tree_view->priv->dy;
3160               tree_view->priv->rubber_band_status = RUBBER_BAND_MAYBE_START;
3161
3162               if ((event->state & modify_mod_mask) == modify_mod_mask)
3163                 tree_view->priv->rubber_band_modify = TRUE;
3164               if ((event->state & extend_mod_mask) == extend_mod_mask)
3165                 tree_view->priv->rubber_band_extend = TRUE;
3166             }
3167         }
3168
3169       if (event->button == GDK_BUTTON_PRIMARY && event->type == GDK_BUTTON_PRESS)
3170         {
3171
3172           /* Test if a double click happened on the same row. */
3173           if (!tree_view->priv->activate_on_single_click)
3174             {
3175               int double_click_time, double_click_distance;
3176
3177               g_object_get (gtk_settings_get_default (),
3178                             "gtk-double-click-time", &double_click_time,
3179                             "gtk-double-click-distance", &double_click_distance,
3180                             NULL);
3181
3182               /* Same conditions as _gdk_event_button_generate */
3183               if (tree_view->priv->last_button_x != -1 &&
3184                   (event->time < tree_view->priv->last_button_time + double_click_time) &&
3185                   (ABS (event->x - tree_view->priv->last_button_x) <= double_click_distance) &&
3186                   (ABS (event->y - tree_view->priv->last_button_y) <= double_click_distance))
3187                 {
3188                   /* We do no longer compare paths of this row and the
3189                    * row clicked previously.  We use the double click
3190                    * distance to decide whether this is a valid click,
3191                    * allowing the mouse to slightly move over another row.
3192                    */
3193                   row_double_click = TRUE;
3194
3195                   tree_view->priv->last_button_time = 0;
3196                   tree_view->priv->last_button_x = -1;
3197                   tree_view->priv->last_button_y = -1;
3198                 }
3199               else
3200                 {
3201                   tree_view->priv->last_button_time = event->time;
3202                   tree_view->priv->last_button_x = event->x;
3203                   tree_view->priv->last_button_y = event->y;
3204                 }
3205             }
3206           else
3207             {
3208               tree_view->priv->button_pressed_node = tree_view->priv->prelight_node;
3209               tree_view->priv->button_pressed_tree = tree_view->priv->prelight_tree;
3210             }
3211         }
3212
3213       if (row_double_click)
3214         {
3215           gtk_grab_remove (widget);
3216           gtk_tree_view_row_activated (tree_view, path, column);
3217
3218           if (tree_view->priv->pressed_button == event->button)
3219             tree_view->priv->pressed_button = -1;
3220         }
3221
3222       gtk_tree_path_free (path);
3223
3224       /* If we activated the row through a double click we don't want to grab
3225        * focus back, as moving focus to another widget is pretty common.
3226        */
3227       if (!row_double_click)
3228         grab_focus_and_unset_draw_keyfocus (tree_view);
3229
3230       return TRUE;
3231     }
3232
3233   /* We didn't click in the window.  Let's check to see if we clicked on a column resize window.
3234    */
3235   for (i = 0, list = tree_view->priv->columns; list; list = list->next, i++)
3236     {
3237       column = list->data;
3238       if (event->window == _gtk_tree_view_column_get_window (column) &&
3239           gtk_tree_view_column_get_resizable (column) &&
3240           _gtk_tree_view_column_get_window (column))
3241         {
3242           gpointer drag_data;
3243           gint column_width, x;
3244
3245           if (event->type == GDK_2BUTTON_PRESS &&
3246               gtk_tree_view_column_get_sizing (column) != GTK_TREE_VIEW_COLUMN_AUTOSIZE)
3247             {
3248               gtk_tree_view_column_set_fixed_width (column, -1);
3249               gtk_tree_view_column_set_expand (column, FALSE);
3250               _gtk_tree_view_column_autosize (tree_view, column);
3251               return TRUE;
3252             }
3253
3254           if (gdk_device_grab (gdk_event_get_device ((GdkEvent*)event),
3255                                _gtk_tree_view_column_get_window (column),
3256                                GDK_OWNERSHIP_NONE,
3257                                FALSE,
3258                                GDK_POINTER_MOTION_HINT_MASK
3259                                 | GDK_BUTTON1_MOTION_MASK
3260                                 | GDK_BUTTON_RELEASE_MASK,
3261                                NULL,
3262                                event->time) != GDK_GRAB_SUCCESS)
3263             return FALSE;
3264
3265           gtk_grab_add (widget);
3266           tree_view->priv->in_column_resize = TRUE;
3267
3268           /* block attached dnd signal handler */
3269           drag_data = g_object_get_data (G_OBJECT (widget), "gtk-site-data");
3270           if (drag_data)
3271             g_signal_handlers_block_matched (widget,
3272                                              G_SIGNAL_MATCH_DATA,
3273                                              0, 0, NULL, NULL,
3274                                              drag_data);
3275
3276           column_width = gtk_tree_view_column_get_width (column);
3277           gdk_window_get_device_position (tree_view->priv->bin_window,
3278                                           gdk_event_get_device ((GdkEvent *) event),
3279                                           &x, NULL, NULL);
3280
3281           tree_view->priv->drag_pos = i;
3282           tree_view->priv->x_drag = x + (rtl ? column_width : -column_width);
3283
3284           if (!gtk_widget_has_focus (widget))
3285             gtk_widget_grab_focus (widget);
3286
3287           return TRUE;
3288         }
3289     }
3290   return FALSE;
3291 }
3292
3293 /* GtkWidget::button_release_event helper */
3294 static gboolean
3295 gtk_tree_view_button_release_drag_column (GtkWidget      *widget,
3296                                           GdkEventButton *event)
3297 {
3298   GtkTreeView *tree_view;
3299   GtkWidget *button;
3300   GList *l;
3301   gboolean rtl;
3302   GdkDevice *device, *other;
3303   GtkStyleContext *context;
3304
3305   tree_view = GTK_TREE_VIEW (widget);
3306
3307   rtl = (gtk_widget_get_direction (widget) == GTK_TEXT_DIR_RTL);
3308   device = gdk_event_get_device ((GdkEvent*)event);
3309   other = gdk_device_get_associated_device (device);
3310   gdk_device_ungrab (device, event->time);
3311   gdk_device_ungrab (other, event->time);
3312
3313   /* Move the button back */
3314   button = gtk_tree_view_column_get_button (tree_view->priv->drag_column);
3315
3316   context = gtk_widget_get_style_context (button);
3317   gtk_style_context_remove_class (context, GTK_STYLE_CLASS_DND);
3318
3319   g_object_ref (button);
3320   gtk_container_remove (GTK_CONTAINER (tree_view), button);
3321   gtk_widget_set_parent_window (button, tree_view->priv->header_window);
3322   gtk_widget_set_parent (button, GTK_WIDGET (tree_view));
3323   g_object_unref (button);
3324   gtk_widget_queue_resize (widget);
3325   if (gtk_tree_view_column_get_resizable (tree_view->priv->drag_column))
3326     {
3327       gdk_window_raise (_gtk_tree_view_column_get_window (tree_view->priv->drag_column));
3328       gdk_window_show (_gtk_tree_view_column_get_window (tree_view->priv->drag_column));
3329     }
3330   else
3331     gdk_window_hide (_gtk_tree_view_column_get_window (tree_view->priv->drag_column));
3332
3333   gtk_widget_grab_focus (button);
3334
3335   if (rtl)
3336     {
3337       if (tree_view->priv->cur_reorder &&
3338           tree_view->priv->cur_reorder->right_column != tree_view->priv->drag_column)
3339         gtk_tree_view_move_column_after (tree_view, tree_view->priv->drag_column,
3340                                          tree_view->priv->cur_reorder->right_column);
3341     }
3342   else
3343     {
3344       if (tree_view->priv->cur_reorder &&
3345           tree_view->priv->cur_reorder->left_column != tree_view->priv->drag_column)
3346         gtk_tree_view_move_column_after (tree_view, tree_view->priv->drag_column,
3347                                          tree_view->priv->cur_reorder->left_column);
3348     }
3349   tree_view->priv->drag_column = NULL;
3350   gtk_widget_unregister_window (widget, tree_view->priv->drag_window);
3351   gdk_window_destroy (tree_view->priv->drag_window);
3352   tree_view->priv->drag_window = NULL;
3353
3354   for (l = tree_view->priv->column_drag_info; l != NULL; l = l->next)
3355     g_slice_free (GtkTreeViewColumnReorder, l->data);
3356   g_list_free (tree_view->priv->column_drag_info);
3357   tree_view->priv->column_drag_info = NULL;
3358   tree_view->priv->cur_reorder = NULL;
3359
3360   if (tree_view->priv->drag_highlight_window)
3361     gdk_window_hide (tree_view->priv->drag_highlight_window);
3362
3363   /* Reset our flags */
3364   tree_view->priv->drag_column_window_state = DRAG_COLUMN_WINDOW_STATE_UNSET;
3365   tree_view->priv->in_column_drag = FALSE;
3366
3367   return TRUE;
3368 }
3369
3370 /* GtkWidget::button_release_event helper */
3371 static gboolean
3372 gtk_tree_view_button_release_column_resize (GtkWidget      *widget,
3373                                             GdkEventButton *event)
3374 {
3375   GtkTreeView *tree_view;
3376   gpointer drag_data;
3377
3378   tree_view = GTK_TREE_VIEW (widget);
3379
3380   tree_view->priv->drag_pos = -1;
3381
3382   /* unblock attached dnd signal handler */
3383   drag_data = g_object_get_data (G_OBJECT (widget), "gtk-site-data");
3384   if (drag_data)
3385     g_signal_handlers_unblock_matched (widget,
3386                                        G_SIGNAL_MATCH_DATA,
3387                                        0, 0, NULL, NULL,
3388                                        drag_data);
3389
3390   tree_view->priv->in_column_resize = FALSE;
3391   gtk_grab_remove (widget);
3392   gdk_device_ungrab (gdk_event_get_device ((GdkEvent*)event), event->time);
3393   return TRUE;
3394 }
3395
3396 static gboolean
3397 button_event_modifies_selection (GdkEventButton *event)
3398 {
3399         return (event->state & (GDK_CONTROL_MASK | GDK_SHIFT_MASK)) != 0;
3400 }
3401
3402 static gboolean
3403 gtk_tree_view_button_release (GtkWidget      *widget,
3404                               GdkEventButton *event)
3405 {
3406   GtkTreeView *tree_view = GTK_TREE_VIEW (widget);
3407
3408   if (tree_view->priv->in_column_drag)
3409     return gtk_tree_view_button_release_drag_column (widget, event);
3410
3411   if (tree_view->priv->rubber_band_status)
3412     gtk_tree_view_stop_rubber_band (tree_view);
3413
3414   if (tree_view->priv->pressed_button == event->button)
3415     tree_view->priv->pressed_button = -1;
3416
3417   if (tree_view->priv->in_column_resize)
3418     return gtk_tree_view_button_release_column_resize (widget, event);
3419
3420   if (tree_view->priv->button_pressed_node == NULL)
3421     return FALSE;
3422
3423   if (event->button == GDK_BUTTON_PRIMARY
3424       && tree_view->priv->button_pressed_node == tree_view->priv->prelight_node)
3425     {
3426       if (tree_view->priv->arrow_prelit)
3427         {
3428           GtkTreePath *path = NULL;
3429
3430           path = _gtk_tree_path_new_from_rbtree (tree_view->priv->button_pressed_tree,
3431                                                  tree_view->priv->button_pressed_node);
3432           /* Actually activate the node */
3433           if (tree_view->priv->button_pressed_node->children == NULL)
3434             gtk_tree_view_real_expand_row (tree_view, path,
3435                                            tree_view->priv->button_pressed_tree,
3436                                            tree_view->priv->button_pressed_node,
3437                                            FALSE, TRUE);
3438           else
3439             gtk_tree_view_real_collapse_row (GTK_TREE_VIEW (widget), path,
3440                                              tree_view->priv->button_pressed_tree,
3441                                              tree_view->priv->button_pressed_node, TRUE);
3442           gtk_tree_path_free (path);
3443         }
3444       else if (tree_view->priv->activate_on_single_click
3445                && !button_event_modifies_selection (event))
3446         {
3447           GtkTreePath *path = NULL;
3448
3449           path = _gtk_tree_path_new_from_rbtree (tree_view->priv->button_pressed_tree,
3450                                                  tree_view->priv->button_pressed_node);
3451           gtk_tree_view_row_activated (tree_view, path, tree_view->priv->focus_column);
3452           gtk_tree_path_free (path);
3453         }
3454
3455       gtk_grab_remove (widget);
3456       tree_view->priv->button_pressed_tree = NULL;
3457       tree_view->priv->button_pressed_node = NULL;
3458     }
3459
3460   return TRUE;
3461 }
3462
3463 static gboolean
3464 gtk_tree_view_grab_broken (GtkWidget          *widget,
3465                            GdkEventGrabBroken *event)
3466 {
3467   GtkTreeView *tree_view = GTK_TREE_VIEW (widget);
3468
3469   if (tree_view->priv->in_column_drag)
3470     gtk_tree_view_button_release_drag_column (widget, (GdkEventButton *)event);
3471
3472   if (tree_view->priv->in_column_resize)
3473     gtk_tree_view_button_release_column_resize (widget, (GdkEventButton *)event);
3474
3475   return TRUE;
3476 }
3477
3478 #if 0
3479 static gboolean
3480 gtk_tree_view_configure (GtkWidget *widget,
3481                          GdkEventConfigure *event)
3482 {
3483   GtkTreeView *tree_view;
3484
3485   tree_view = GTK_TREE_VIEW (widget);
3486   tree_view->priv->search_position_func (tree_view, tree_view->priv->search_window);
3487
3488   return FALSE;
3489 }
3490 #endif
3491
3492 /* GtkWidget::motion_event function set.
3493  */
3494
3495 static gboolean
3496 coords_are_over_arrow (GtkTreeView *tree_view,
3497                        GtkRBTree   *tree,
3498                        GtkRBNode   *node,
3499                        /* these are in bin window coords */
3500                        gint         x,
3501                        gint         y)
3502 {
3503   GdkRectangle arrow;
3504   gint x2;
3505
3506   if (!gtk_widget_get_realized (GTK_WIDGET (tree_view)))
3507     return FALSE;
3508
3509   if ((node->flags & GTK_RBNODE_IS_PARENT) == 0)
3510     return FALSE;
3511
3512   arrow.y = gtk_tree_view_get_row_y_offset (tree_view, tree, node);
3513   arrow.height = gtk_tree_view_get_row_height (tree_view, node);
3514
3515   gtk_tree_view_get_arrow_xrange (tree_view, tree, &arrow.x, &x2);
3516
3517   arrow.width = x2 - arrow.x;
3518
3519   return (x >= arrow.x &&
3520           x < (arrow.x + arrow.width) &&
3521           y >= arrow.y &&
3522           y < (arrow.y + arrow.height));
3523 }
3524
3525 static gboolean
3526 auto_expand_timeout (gpointer data)
3527 {
3528   GtkTreeView *tree_view = GTK_TREE_VIEW (data);
3529   GtkTreePath *path;
3530
3531   if (tree_view->priv->prelight_node)
3532     {
3533       path = _gtk_tree_path_new_from_rbtree (tree_view->priv->prelight_tree,
3534                                              tree_view->priv->prelight_node);
3535
3536       if (tree_view->priv->prelight_node->children)
3537         gtk_tree_view_collapse_row (tree_view, path);
3538       else
3539         gtk_tree_view_expand_row (tree_view, path, FALSE);
3540
3541       gtk_tree_path_free (path);
3542     }
3543
3544   tree_view->priv->auto_expand_timeout = 0;
3545
3546   return FALSE;
3547 }
3548
3549 static void
3550 remove_auto_expand_timeout (GtkTreeView *tree_view)
3551 {
3552   if (tree_view->priv->auto_expand_timeout != 0)
3553     {
3554       g_source_remove (tree_view->priv->auto_expand_timeout);
3555       tree_view->priv->auto_expand_timeout = 0;
3556     }
3557 }
3558
3559 static void
3560 do_prelight (GtkTreeView *tree_view,
3561              GtkRBTree   *tree,
3562              GtkRBNode   *node,
3563              /* these are in bin_window coords */
3564              gint         x,
3565              gint         y)
3566 {
3567   if (tree_view->priv->prelight_tree == tree &&
3568       tree_view->priv->prelight_node == node)
3569     {
3570       /*  We are still on the same node,
3571           but we might need to take care of the arrow  */
3572
3573       if (tree && node && gtk_tree_view_draw_expanders (tree_view))
3574         {
3575           gboolean over_arrow;
3576
3577           over_arrow = coords_are_over_arrow (tree_view, tree, node, x, y);
3578
3579           if (over_arrow != tree_view->priv->arrow_prelit)
3580             {
3581               if (over_arrow)
3582                 tree_view->priv->arrow_prelit = TRUE;
3583               else
3584                 tree_view->priv->arrow_prelit = FALSE;
3585
3586               gtk_tree_view_queue_draw_arrow (tree_view, tree, node);
3587             }
3588         }
3589
3590       return;
3591     }
3592
3593   if (tree_view->priv->prelight_tree && tree_view->priv->prelight_node)
3594     {
3595       /*  Unprelight the old node and arrow  */
3596
3597       GTK_RBNODE_UNSET_FLAG (tree_view->priv->prelight_node,
3598                              GTK_RBNODE_IS_PRELIT);
3599
3600       if (tree_view->priv->arrow_prelit
3601           && gtk_tree_view_draw_expanders (tree_view))
3602         {
3603           tree_view->priv->arrow_prelit = FALSE;
3604
3605           gtk_tree_view_queue_draw_arrow (tree_view,
3606                                           tree_view->priv->prelight_tree,
3607                                           tree_view->priv->prelight_node);
3608         }
3609
3610       _gtk_tree_view_queue_draw_node (tree_view,
3611                                       tree_view->priv->prelight_tree,
3612                                       tree_view->priv->prelight_node,
3613                                       NULL);
3614     }
3615
3616
3617   if (tree_view->priv->hover_expand)
3618     remove_auto_expand_timeout (tree_view);
3619
3620   /*  Set the new prelight values  */
3621   tree_view->priv->prelight_node = node;
3622   tree_view->priv->prelight_tree = tree;
3623
3624   if (!node || !tree)
3625     return;
3626
3627   /*  Prelight the new node and arrow  */
3628
3629   if (gtk_tree_view_draw_expanders (tree_view)
3630       && coords_are_over_arrow (tree_view, tree, node, x, y))
3631     {
3632       tree_view->priv->arrow_prelit = TRUE;
3633
3634       gtk_tree_view_queue_draw_arrow (tree_view, tree, node);
3635     }
3636
3637   GTK_RBNODE_SET_FLAG (node, GTK_RBNODE_IS_PRELIT);
3638
3639   _gtk_tree_view_queue_draw_node (tree_view, tree, node, NULL);
3640
3641   if (tree_view->priv->hover_expand)
3642     {
3643       tree_view->priv->auto_expand_timeout =
3644         gdk_threads_add_timeout (AUTO_EXPAND_TIMEOUT, auto_expand_timeout, tree_view);
3645     }
3646 }
3647
3648 static void
3649 prelight_or_select (GtkTreeView *tree_view,
3650                     GtkRBTree   *tree,
3651                     GtkRBNode   *node,
3652                     /* these are in bin_window coords */
3653                     gint         x,
3654                     gint         y)
3655 {
3656   GtkSelectionMode mode = gtk_tree_selection_get_mode (tree_view->priv->selection);
3657
3658   if (tree_view->priv->hover_selection &&
3659       (mode == GTK_SELECTION_SINGLE || mode == GTK_SELECTION_BROWSE) &&
3660       !(tree_view->priv->edited_column &&
3661         gtk_cell_area_get_edit_widget
3662         (gtk_cell_layout_get_area (GTK_CELL_LAYOUT (tree_view->priv->edited_column)))))
3663     {
3664       if (node)
3665         {
3666           if (!GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_SELECTED))
3667             {
3668               GtkTreePath *path;
3669
3670               path = _gtk_tree_path_new_from_rbtree (tree, node);
3671               gtk_tree_selection_select_path (tree_view->priv->selection, path);
3672               if (GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_SELECTED))
3673                 {
3674                   tree_view->priv->draw_keyfocus = FALSE;
3675                   gtk_tree_view_real_set_cursor (tree_view, path, 0);
3676                 }
3677               gtk_tree_path_free (path);
3678             }
3679         }
3680
3681       else if (mode == GTK_SELECTION_SINGLE)
3682         gtk_tree_selection_unselect_all (tree_view->priv->selection);
3683     }
3684
3685     do_prelight (tree_view, tree, node, x, y);
3686 }
3687
3688 static void
3689 ensure_unprelighted (GtkTreeView *tree_view)
3690 {
3691   do_prelight (tree_view,
3692                NULL, NULL,
3693                -1000, -1000); /* coords not possibly over an arrow */
3694
3695   g_assert (tree_view->priv->prelight_node == NULL);
3696 }
3697
3698 static void
3699 update_prelight (GtkTreeView *tree_view,
3700                  gint         x,
3701                  gint         y)
3702 {
3703   int new_y;
3704   GtkRBTree *tree;
3705   GtkRBNode *node;
3706
3707   if (tree_view->priv->tree == NULL)
3708     return;
3709
3710   if (x == -10000)
3711     {
3712       ensure_unprelighted (tree_view);
3713       return;
3714     }
3715
3716   new_y = TREE_WINDOW_Y_TO_RBTREE_Y (tree_view, y);
3717   if (new_y < 0)
3718     new_y = 0;
3719
3720   _gtk_rbtree_find_offset (tree_view->priv->tree,
3721                            new_y, &tree, &node);
3722
3723   if (node)
3724     prelight_or_select (tree_view, tree, node, x, y);
3725 }
3726
3727
3728
3729
3730 /* Our motion arrow is either a box (in the case of the original spot)
3731  * or an arrow.  It is expander_size wide.
3732  */
3733 /*
3734  * 11111111111111
3735  * 01111111111110
3736  * 00111111111100
3737  * 00011111111000
3738  * 00001111110000
3739  * 00000111100000
3740  * 00000111100000
3741  * 00000111100000
3742  * ~ ~ ~ ~ ~ ~ ~
3743  * 00000111100000
3744  * 00000111100000
3745  * 00000111100000
3746  * 00001111110000
3747  * 00011111111000
3748  * 00111111111100
3749  * 01111111111110
3750  * 11111111111111
3751  */
3752
3753 static void
3754 gtk_tree_view_motion_draw_column_motion_arrow (GtkTreeView *tree_view)
3755 {
3756   GtkTreeViewColumnReorder *reorder = tree_view->priv->cur_reorder;
3757   GtkWidget *widget = GTK_WIDGET (tree_view);
3758   cairo_surface_t *mask_image;
3759   cairo_region_t *mask_region;
3760   gint x;
3761   gint y;
3762   gint width;
3763   gint height;
3764   gint arrow_type = DRAG_COLUMN_WINDOW_STATE_UNSET;
3765   GdkWindowAttr attributes;
3766   guint attributes_mask;
3767   cairo_t *cr;
3768
3769   if (!reorder ||
3770       reorder->left_column == tree_view->priv->drag_column ||
3771       reorder->right_column == tree_view->priv->drag_column)
3772     arrow_type = DRAG_COLUMN_WINDOW_STATE_ORIGINAL;
3773   else if (reorder->left_column || reorder->right_column)
3774     {
3775       GtkAllocation left_allocation, right_allocation;
3776       GdkRectangle visible_rect;
3777       GtkWidget *button;
3778
3779       gtk_tree_view_get_visible_rect (tree_view, &visible_rect);
3780       if (reorder->left_column)
3781         {
3782           button = gtk_tree_view_column_get_button (reorder->left_column);
3783           gtk_widget_get_allocation (button, &left_allocation);
3784           x = left_allocation.x + left_allocation.width;
3785         }
3786       else
3787         {
3788           button = gtk_tree_view_column_get_button (reorder->right_column);
3789           gtk_widget_get_allocation (button, &right_allocation);
3790           x = right_allocation.x;
3791         }
3792
3793       if (x < visible_rect.x)
3794         arrow_type = DRAG_COLUMN_WINDOW_STATE_ARROW_LEFT;
3795       else if (x > visible_rect.x + visible_rect.width)
3796         arrow_type = DRAG_COLUMN_WINDOW_STATE_ARROW_RIGHT;
3797       else
3798         arrow_type = DRAG_COLUMN_WINDOW_STATE_ARROW;
3799     }
3800
3801   /* We want to draw the rectangle over the initial location. */
3802   if (arrow_type == DRAG_COLUMN_WINDOW_STATE_ORIGINAL)
3803     {
3804       if (tree_view->priv->drag_column_window_state != DRAG_COLUMN_WINDOW_STATE_ORIGINAL)
3805         {
3806           GtkAllocation drag_allocation;
3807           GtkWidget    *button;
3808
3809           if (tree_view->priv->drag_highlight_window)
3810             {
3811               gtk_widget_unregister_window (GTK_WIDGET (tree_view), tree_view->priv->drag_highlight_window);
3812               gdk_window_destroy (tree_view->priv->drag_highlight_window);
3813             }
3814
3815           button = gtk_tree_view_column_get_button (tree_view->priv->drag_column);
3816           attributes.window_type = GDK_WINDOW_CHILD;
3817           attributes.wclass = GDK_INPUT_OUTPUT;
3818           attributes.x = tree_view->priv->drag_column_x;
3819           attributes.y = 0;
3820           gtk_widget_get_allocation (button, &drag_allocation);
3821           width = attributes.width = drag_allocation.width;
3822           height = attributes.height = drag_allocation.height;
3823           attributes.visual = gtk_widget_get_visual (GTK_WIDGET (tree_view));
3824           attributes.event_mask = GDK_VISIBILITY_NOTIFY_MASK | GDK_EXPOSURE_MASK | GDK_POINTER_MOTION_MASK;
3825           attributes_mask = GDK_WA_X | GDK_WA_Y | GDK_WA_VISUAL;
3826           tree_view->priv->drag_highlight_window = gdk_window_new (tree_view->priv->header_window, &attributes, attributes_mask);
3827           gtk_widget_register_window (GTK_WIDGET (tree_view), tree_view->priv->drag_highlight_window);
3828
3829           mask_image = cairo_image_surface_create (CAIRO_FORMAT_A1, width, height);
3830           cr = cairo_create (mask_image);
3831
3832           cairo_rectangle (cr, 1, 1, width - 2, height - 2);
3833           cairo_stroke (cr);
3834           cairo_destroy (cr);
3835
3836           mask_region = gdk_cairo_region_create_from_surface (mask_image);
3837           gdk_window_shape_combine_region (tree_view->priv->drag_highlight_window,
3838                                            mask_region, 0, 0);
3839
3840           cairo_region_destroy (mask_region);
3841           cairo_surface_destroy (mask_image);
3842
3843           tree_view->priv->drag_column_window_state = DRAG_COLUMN_WINDOW_STATE_ORIGINAL;
3844         }
3845     }
3846   else if (arrow_type == DRAG_COLUMN_WINDOW_STATE_ARROW)
3847     {
3848       GtkAllocation button_allocation;
3849       GtkWidget    *button;
3850
3851       width = gtk_tree_view_get_expander_size (tree_view);
3852
3853       /* Get x, y, width, height of arrow */
3854       gdk_window_get_origin (tree_view->priv->header_window, &x, &y);
3855       if (reorder->left_column)
3856         {
3857           button = gtk_tree_view_column_get_button (reorder->left_column);
3858           gtk_widget_get_allocation (button, &button_allocation);
3859           x += button_allocation.x + button_allocation.width - width/2;
3860           height = button_allocation.height;
3861         }
3862       else
3863         {
3864           button = gtk_tree_view_column_get_button (reorder->right_column);
3865           gtk_widget_get_allocation (button, &button_allocation);
3866           x += button_allocation.x - width/2;
3867           height = button_allocation.height;
3868         }
3869       y -= width/2; /* The arrow takes up only half the space */
3870       height += width;
3871
3872       /* Create the new window */
3873       if (tree_view->priv->drag_column_window_state != DRAG_COLUMN_WINDOW_STATE_ARROW)
3874         {
3875           if (tree_view->priv->drag_highlight_window)
3876             {
3877               gtk_widget_unregister_window (GTK_WIDGET (tree_view), tree_view->priv->drag_highlight_window);
3878               gdk_window_destroy (tree_view->priv->drag_highlight_window);
3879             }
3880
3881           attributes.window_type = GDK_WINDOW_TEMP;
3882           attributes.wclass = GDK_INPUT_OUTPUT;
3883           attributes.visual = gtk_widget_get_visual (GTK_WIDGET (tree_view));
3884           attributes.event_mask = GDK_VISIBILITY_NOTIFY_MASK | GDK_EXPOSURE_MASK | GDK_POINTER_MOTION_MASK;
3885           attributes_mask = GDK_WA_X | GDK_WA_Y | GDK_WA_VISUAL;
3886           attributes.x = x;
3887           attributes.y = y;
3888           attributes.width = width;
3889           attributes.height = height;
3890           tree_view->priv->drag_highlight_window = gdk_window_new (gtk_widget_get_root_window (widget),
3891                                                                    &attributes, attributes_mask);
3892           gtk_widget_register_window (GTK_WIDGET (tree_view), tree_view->priv->drag_highlight_window);
3893
3894           mask_image = cairo_image_surface_create (CAIRO_FORMAT_A1, width, height);
3895
3896           cr = cairo_create (mask_image);
3897           cairo_move_to (cr, 0, 0);
3898           cairo_line_to (cr, width, 0);
3899           cairo_line_to (cr, width / 2., width / 2);
3900           cairo_move_to (cr, 0, height);
3901           cairo_line_to (cr, width, height);
3902           cairo_line_to (cr, width / 2., height - width / 2.);
3903           cairo_fill (cr);
3904           cairo_destroy (cr);
3905
3906           mask_region = gdk_cairo_region_create_from_surface (mask_image);
3907           gdk_window_shape_combine_region (tree_view->priv->drag_highlight_window,
3908                                            mask_region, 0, 0);
3909
3910           cairo_region_destroy (mask_region);
3911           cairo_surface_destroy (mask_image);
3912         }
3913
3914       tree_view->priv->drag_column_window_state = DRAG_COLUMN_WINDOW_STATE_ARROW;
3915       gdk_window_move (tree_view->priv->drag_highlight_window, x, y);
3916     }
3917   else if (arrow_type == DRAG_COLUMN_WINDOW_STATE_ARROW_LEFT ||
3918            arrow_type == DRAG_COLUMN_WINDOW_STATE_ARROW_RIGHT)
3919     {
3920       GtkAllocation allocation;
3921       GtkWidget    *button;
3922       gint          expander_size;
3923
3924       expander_size = gtk_tree_view_get_expander_size (tree_view);
3925
3926       /* Get x, y, width, height of arrow */
3927       width = expander_size/2; /* remember, the arrow only takes half the available width */
3928       gdk_window_get_origin (gtk_widget_get_window (widget),
3929                              &x, &y);
3930       if (arrow_type == DRAG_COLUMN_WINDOW_STATE_ARROW_RIGHT)
3931         {
3932           gtk_widget_get_allocation (widget, &allocation);
3933           x += allocation.width - width;
3934         }
3935
3936       if (reorder->left_column)
3937         {
3938           button = gtk_tree_view_column_get_button (reorder->left_column);
3939           gtk_widget_get_allocation (button, &allocation);
3940           height = allocation.height;
3941         }
3942       else
3943         {
3944           button = gtk_tree_view_column_get_button (reorder->right_column);
3945           gtk_widget_get_allocation (button, &allocation);
3946           height = allocation.height;
3947         }
3948
3949       y -= expander_size;
3950       height += 2 * expander_size;
3951
3952       /* Create the new window */
3953       if (tree_view->priv->drag_column_window_state != DRAG_COLUMN_WINDOW_STATE_ARROW_LEFT &&
3954           tree_view->priv->drag_column_window_state != DRAG_COLUMN_WINDOW_STATE_ARROW_RIGHT)
3955         {
3956           if (tree_view->priv->drag_highlight_window)
3957             {
3958               gtk_widget_unregister_window (GTK_WIDGET (tree_view), tree_view->priv->drag_highlight_window);
3959               gdk_window_destroy (tree_view->priv->drag_highlight_window);
3960             }
3961
3962           attributes.window_type = GDK_WINDOW_TEMP;
3963           attributes.wclass = GDK_INPUT_OUTPUT;
3964           attributes.visual = gtk_widget_get_visual (GTK_WIDGET (tree_view));
3965           attributes.event_mask = GDK_VISIBILITY_NOTIFY_MASK | GDK_EXPOSURE_MASK | GDK_POINTER_MOTION_MASK;
3966           attributes_mask = GDK_WA_X | GDK_WA_Y | GDK_WA_VISUAL;
3967           attributes.x = x;
3968           attributes.y = y;
3969           attributes.width = width;
3970           attributes.height = height;
3971           tree_view->priv->drag_highlight_window = gdk_window_new (gtk_widget_get_root_window (widget), &attributes, attributes_mask);
3972           gtk_widget_register_window (GTK_WIDGET (tree_view), tree_view->priv->drag_highlight_window);
3973
3974           mask_image = cairo_image_surface_create (CAIRO_FORMAT_A1, width, height);
3975
3976           cr = cairo_create (mask_image);
3977           /* mirror if we're on the left */
3978           if (arrow_type == DRAG_COLUMN_WINDOW_STATE_ARROW_LEFT)
3979             {
3980               cairo_translate (cr, width, 0);
3981               cairo_scale (cr, -1, 1);
3982             }
3983           cairo_move_to (cr, 0, 0);
3984           cairo_line_to (cr, width, width);
3985           cairo_line_to (cr, 0, expander_size);
3986           cairo_move_to (cr, 0, height);
3987           cairo_line_to (cr, width, height - width);
3988           cairo_line_to (cr, 0, height - expander_size);
3989           cairo_fill (cr);
3990           cairo_destroy (cr);
3991
3992           mask_region = gdk_cairo_region_create_from_surface (mask_image);
3993           gdk_window_shape_combine_region (tree_view->priv->drag_highlight_window,
3994                                            mask_region, 0, 0);
3995
3996           cairo_region_destroy (mask_region);
3997           cairo_surface_destroy (mask_image);
3998         }
3999
4000       tree_view->priv->drag_column_window_state = arrow_type;
4001       gdk_window_move (tree_view->priv->drag_highlight_window, x, y);
4002    }
4003   else
4004     {
4005       g_warning (G_STRLOC"Invalid GtkTreeViewColumnReorder struct");
4006       gdk_window_hide (tree_view->priv->drag_highlight_window);
4007       return;
4008     }
4009
4010   gdk_window_show (tree_view->priv->drag_highlight_window);
4011   gdk_window_raise (tree_view->priv->drag_highlight_window);
4012 }
4013
4014 static gboolean
4015 gtk_tree_view_motion_resize_column (GtkWidget      *widget,
4016                                     GdkEventMotion *event)
4017 {
4018   gint x;
4019   gint new_width;
4020   GtkTreeViewColumn *column;
4021   GtkTreeView *tree_view = GTK_TREE_VIEW (widget);
4022
4023   column = gtk_tree_view_get_column (tree_view, tree_view->priv->drag_pos);
4024
4025   gdk_window_get_device_position (tree_view->priv->bin_window,
4026                                   gdk_event_get_device ((GdkEvent *) event),
4027                                   &x, NULL, NULL);
4028
4029   if (gtk_widget_get_direction (widget) == GTK_TEXT_DIR_RTL)
4030     new_width = MAX (tree_view->priv->x_drag - x, 0);
4031   else
4032     new_width = MAX (x - tree_view->priv->x_drag, 0);
4033
4034   if (new_width != gtk_tree_view_column_get_width (column))
4035     gtk_tree_view_modify_column_width (tree_view, column, new_width);
4036
4037   return FALSE;
4038 }
4039
4040
4041 static void
4042 gtk_tree_view_update_current_reorder (GtkTreeView *tree_view,
4043                                       GdkEvent    *event)
4044 {
4045   GtkTreeViewColumnReorder *reorder = NULL;
4046   GList *list;
4047   gint mouse_x;
4048
4049   gdk_window_get_device_position (tree_view->priv->header_window,
4050                                   gdk_event_get_device (event),
4051                                   &mouse_x, NULL, NULL);
4052   for (list = tree_view->priv->column_drag_info; list; list = list->next)
4053     {
4054       reorder = (GtkTreeViewColumnReorder *) list->data;
4055       if (mouse_x >= reorder->left_align && mouse_x < reorder->right_align)
4056         break;
4057       reorder = NULL;
4058     }
4059
4060   /*  if (reorder && reorder == tree_view->priv->cur_reorder)
4061       return;*/
4062
4063   tree_view->priv->cur_reorder = reorder;
4064   gtk_tree_view_motion_draw_column_motion_arrow (tree_view);
4065 }
4066
4067 static void
4068 gtk_tree_view_vertical_autoscroll (GtkTreeView *tree_view)
4069 {
4070   GdkRectangle visible_rect;
4071   gint y;
4072   gint offset;
4073
4074   gdk_window_get_device_position (tree_view->priv->bin_window,
4075                                   gdk_device_manager_get_client_pointer (
4076                                     gdk_display_get_device_manager (
4077                                       gtk_widget_get_display (GTK_WIDGET (tree_view)))),
4078                                   NULL, &y, NULL);
4079   y += tree_view->priv->dy;
4080
4081   gtk_tree_view_get_visible_rect (tree_view, &visible_rect);
4082
4083   /* see if we are near the edge. */
4084   offset = y - (visible_rect.y + 2 * SCROLL_EDGE_SIZE);
4085   if (offset > 0)
4086     {
4087       offset = y - (visible_rect.y + visible_rect.height - 2 * SCROLL_EDGE_SIZE);
4088       if (offset < 0)
4089         return;
4090     }
4091
4092   gtk_adjustment_set_value (tree_view->priv->vadjustment,
4093                             MAX (gtk_adjustment_get_value (tree_view->priv->vadjustment) + offset, 0.0));
4094 }
4095
4096 static gboolean
4097 gtk_tree_view_horizontal_autoscroll (GtkTreeView *tree_view,
4098                                      GdkEvent    *event)
4099 {
4100   GdkRectangle visible_rect;
4101   gint x;
4102   gint offset;
4103
4104   gdk_window_get_device_position (tree_view->priv->bin_window,
4105                                   gdk_event_get_device (event),
4106                                   &x, NULL, NULL);
4107
4108   gtk_tree_view_get_visible_rect (tree_view, &visible_rect);
4109
4110   /* See if we are near the edge. */
4111   offset = x - (visible_rect.x + SCROLL_EDGE_SIZE);
4112   if (offset > 0)
4113     {
4114       offset = x - (visible_rect.x + visible_rect.width - SCROLL_EDGE_SIZE);
4115       if (offset < 0)
4116         return TRUE;
4117     }
4118   offset = offset/3;
4119
4120   gtk_adjustment_set_value (tree_view->priv->hadjustment,
4121                             MAX (gtk_adjustment_get_value (tree_view->priv->hadjustment) + offset, 0.0));
4122
4123   return TRUE;
4124
4125 }
4126
4127 static gboolean
4128 gtk_tree_view_motion_drag_column (GtkWidget      *widget,
4129                                   GdkEventMotion *event)
4130 {
4131   GtkAllocation allocation, button_allocation;
4132   GtkTreeView *tree_view = (GtkTreeView *) widget;
4133   GtkTreeViewColumn *column = tree_view->priv->drag_column;
4134   GtkWidget *button;
4135   gint x, y;
4136
4137   /* Sanity Check */
4138   if ((column == NULL) ||
4139       (event->window != tree_view->priv->drag_window))
4140     return FALSE;
4141
4142   button = gtk_tree_view_column_get_button (column);
4143
4144   /* Handle moving the header */
4145   gdk_window_get_position (tree_view->priv->drag_window, &x, &y);
4146   gtk_widget_get_allocation (widget, &allocation);
4147   gtk_widget_get_allocation (button, &button_allocation);
4148   x = CLAMP (x + (gint)event->x - _gtk_tree_view_column_get_drag_x (column), 0,
4149              MAX (tree_view->priv->width, allocation.width) - button_allocation.width);
4150   gdk_window_move (tree_view->priv->drag_window, x, y);
4151
4152   /* autoscroll, if needed */
4153   gtk_tree_view_horizontal_autoscroll (tree_view, (GdkEvent *) event);
4154   /* Update the current reorder position and arrow; */
4155   gtk_tree_view_update_current_reorder (tree_view, (GdkEvent *) event);
4156
4157   return TRUE;
4158 }
4159
4160 static void
4161 gtk_tree_view_stop_rubber_band (GtkTreeView *tree_view)
4162 {
4163   remove_scroll_timeout (tree_view);
4164   gtk_grab_remove (GTK_WIDGET (tree_view));
4165
4166   if (tree_view->priv->rubber_band_status == RUBBER_BAND_ACTIVE)
4167     {
4168       GtkTreePath *tmp_path;
4169
4170       gtk_widget_queue_draw (GTK_WIDGET (tree_view));
4171
4172       /* The anchor path should be set to the start path */
4173       tmp_path = _gtk_tree_path_new_from_rbtree (tree_view->priv->rubber_band_start_tree,
4174                                                  tree_view->priv->rubber_band_start_node);
4175
4176       if (tree_view->priv->anchor)
4177         gtk_tree_row_reference_free (tree_view->priv->anchor);
4178
4179       tree_view->priv->anchor =
4180         gtk_tree_row_reference_new_proxy (G_OBJECT (tree_view),
4181                                           tree_view->priv->model,
4182                                           tmp_path);
4183
4184       gtk_tree_path_free (tmp_path);
4185
4186       /* ... and the cursor to the end path */
4187       tmp_path = _gtk_tree_path_new_from_rbtree (tree_view->priv->rubber_band_end_tree,
4188                                                  tree_view->priv->rubber_band_end_node);
4189       gtk_tree_view_real_set_cursor (GTK_TREE_VIEW (tree_view), tmp_path, 0);
4190       gtk_tree_path_free (tmp_path);
4191
4192       _gtk_tree_selection_emit_changed (tree_view->priv->selection);
4193     }
4194
4195   /* Clear status variables */
4196   tree_view->priv->rubber_band_status = RUBBER_BAND_OFF;
4197   tree_view->priv->rubber_band_extend = FALSE;
4198   tree_view->priv->rubber_band_modify = FALSE;
4199
4200   tree_view->priv->rubber_band_start_node = NULL;
4201   tree_view->priv->rubber_band_start_tree = NULL;
4202   tree_view->priv->rubber_band_end_node = NULL;
4203   tree_view->priv->rubber_band_end_tree = NULL;
4204 }
4205
4206 static void
4207 gtk_tree_view_update_rubber_band_selection_range (GtkTreeView *tree_view,
4208                                                  GtkRBTree   *start_tree,
4209                                                  GtkRBNode   *start_node,
4210                                                  GtkRBTree   *end_tree,
4211                                                  GtkRBNode   *end_node,
4212                                                  gboolean     select,
4213                                                  gboolean     skip_start,
4214                                                  gboolean     skip_end)
4215 {
4216   if (start_node == end_node)
4217     return;
4218
4219   /* We skip the first node and jump inside the loop */
4220   if (skip_start)
4221     goto skip_first;
4222
4223   do
4224     {
4225       /* Small optimization by assuming insensitive nodes are never
4226        * selected.
4227        */
4228       if (!GTK_RBNODE_FLAG_SET (start_node, GTK_RBNODE_IS_SELECTED))
4229         {
4230           GtkTreePath *path;
4231           gboolean selectable;
4232
4233           path = _gtk_tree_path_new_from_rbtree (start_tree, start_node);
4234           selectable = _gtk_tree_selection_row_is_selectable (tree_view->priv->selection, start_node, path);
4235           gtk_tree_path_free (path);
4236
4237           if (!selectable)
4238             goto node_not_selectable;
4239         }
4240
4241       if (select)
4242         {
4243           if (tree_view->priv->rubber_band_extend)
4244             GTK_RBNODE_SET_FLAG (start_node, GTK_RBNODE_IS_SELECTED);
4245           else if (tree_view->priv->rubber_band_modify)
4246             {
4247               /* Toggle the selection state */
4248               if (GTK_RBNODE_FLAG_SET (start_node, GTK_RBNODE_IS_SELECTED))
4249                 GTK_RBNODE_UNSET_FLAG (start_node, GTK_RBNODE_IS_SELECTED);
4250               else
4251                 GTK_RBNODE_SET_FLAG (start_node, GTK_RBNODE_IS_SELECTED);
4252             }
4253           else
4254             GTK_RBNODE_SET_FLAG (start_node, GTK_RBNODE_IS_SELECTED);
4255         }
4256       else
4257         {
4258           /* Mirror the above */
4259           if (tree_view->priv->rubber_band_extend)
4260             GTK_RBNODE_UNSET_FLAG (start_node, GTK_RBNODE_IS_SELECTED);
4261           else if (tree_view->priv->rubber_band_modify)
4262             {
4263               /* Toggle the selection state */
4264               if (GTK_RBNODE_FLAG_SET (start_node, GTK_RBNODE_IS_SELECTED))
4265                 GTK_RBNODE_UNSET_FLAG (start_node, GTK_RBNODE_IS_SELECTED);
4266               else
4267                 GTK_RBNODE_SET_FLAG (start_node, GTK_RBNODE_IS_SELECTED);
4268             }
4269           else
4270             GTK_RBNODE_UNSET_FLAG (start_node, GTK_RBNODE_IS_SELECTED);
4271         }
4272
4273       _gtk_tree_view_queue_draw_node (tree_view, start_tree, start_node, NULL);
4274
4275 node_not_selectable:
4276       if (start_node == end_node)
4277         break;
4278
4279 skip_first:
4280
4281       if (start_node->children)
4282         {
4283           start_tree = start_node->children;
4284           start_node = _gtk_rbtree_first (start_tree);
4285         }
4286       else
4287         {
4288           _gtk_rbtree_next_full (start_tree, start_node, &start_tree, &start_node);
4289
4290           if (!start_tree)
4291             /* Ran out of tree */
4292             break;
4293         }
4294
4295       if (skip_end && start_node == end_node)
4296         break;
4297     }
4298   while (TRUE);
4299 }
4300
4301 static void
4302 gtk_tree_view_update_rubber_band_selection (GtkTreeView *tree_view)
4303 {
4304   GtkRBTree *start_tree, *end_tree;
4305   GtkRBNode *start_node, *end_node;
4306
4307   _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);
4308   _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);
4309
4310   /* Handle the start area first */
4311   if (!tree_view->priv->rubber_band_start_node)
4312     {
4313       gtk_tree_view_update_rubber_band_selection_range (tree_view,
4314                                                        start_tree,
4315                                                        start_node,
4316                                                        end_tree,
4317                                                        end_node,
4318                                                        TRUE,
4319                                                        FALSE,
4320                                                        FALSE);
4321     }
4322   else if (_gtk_rbtree_node_find_offset (start_tree, start_node) <
4323            _gtk_rbtree_node_find_offset (tree_view->priv->rubber_band_start_tree, tree_view->priv->rubber_band_start_node))
4324     {
4325       /* New node is above the old one; selection became bigger */
4326       gtk_tree_view_update_rubber_band_selection_range (tree_view,
4327                                                        start_tree,
4328                                                        start_node,
4329                                                        tree_view->priv->rubber_band_start_tree,
4330                                                        tree_view->priv->rubber_band_start_node,
4331                                                        TRUE,
4332                                                        FALSE,
4333                                                        TRUE);
4334     }
4335   else if (_gtk_rbtree_node_find_offset (start_tree, start_node) >
4336            _gtk_rbtree_node_find_offset (tree_view->priv->rubber_band_start_tree, tree_view->priv->rubber_band_start_node))
4337     {
4338       /* New node is below the old one; selection became smaller */
4339       gtk_tree_view_update_rubber_band_selection_range (tree_view,
4340                                                        tree_view->priv->rubber_band_start_tree,
4341                                                        tree_view->priv->rubber_band_start_node,
4342                                                        start_tree,
4343                                                        start_node,
4344                                                        FALSE,
4345                                                        FALSE,
4346                                                        TRUE);
4347     }
4348
4349   tree_view->priv->rubber_band_start_tree = start_tree;
4350   tree_view->priv->rubber_band_start_node = start_node;
4351
4352   /* Next, handle the end area */
4353   if (!tree_view->priv->rubber_band_end_node)
4354     {
4355       /* In the event this happens, start_node was also NULL; this case is
4356        * handled above.
4357        */
4358     }
4359   else if (!end_node)
4360     {
4361       /* Find the last node in the tree */
4362       _gtk_rbtree_find_offset (tree_view->priv->tree, tree_view->priv->height - 1,
4363                                &end_tree, &end_node);
4364
4365       /* Selection reached end of the tree */
4366       gtk_tree_view_update_rubber_band_selection_range (tree_view,
4367                                                        tree_view->priv->rubber_band_end_tree,
4368                                                        tree_view->priv->rubber_band_end_node,
4369                                                        end_tree,
4370                                                        end_node,
4371                                                        TRUE,
4372                                                        TRUE,
4373                                                        FALSE);
4374     }
4375   else if (_gtk_rbtree_node_find_offset (end_tree, end_node) >
4376            _gtk_rbtree_node_find_offset (tree_view->priv->rubber_band_end_tree, tree_view->priv->rubber_band_end_node))
4377     {
4378       /* New node is below the old one; selection became bigger */
4379       gtk_tree_view_update_rubber_band_selection_range (tree_view,
4380                                                        tree_view->priv->rubber_band_end_tree,
4381                                                        tree_view->priv->rubber_band_end_node,
4382                                                        end_tree,
4383                                                        end_node,
4384                                                        TRUE,
4385                                                        TRUE,
4386                                                        FALSE);
4387     }
4388   else if (_gtk_rbtree_node_find_offset (end_tree, end_node) <
4389            _gtk_rbtree_node_find_offset (tree_view->priv->rubber_band_end_tree, tree_view->priv->rubber_band_end_node))
4390     {
4391       /* New node is above the old one; selection became smaller */
4392       gtk_tree_view_update_rubber_band_selection_range (tree_view,
4393                                                        end_tree,
4394                                                        end_node,
4395                                                        tree_view->priv->rubber_band_end_tree,
4396                                                        tree_view->priv->rubber_band_end_node,
4397                                                        FALSE,
4398                                                        TRUE,
4399                                                        FALSE);
4400     }
4401
4402   tree_view->priv->rubber_band_end_tree = end_tree;
4403   tree_view->priv->rubber_band_end_node = end_node;
4404 }
4405
4406 static void
4407 gtk_tree_view_update_rubber_band (GtkTreeView *tree_view)
4408 {
4409   gint x, y;
4410   GdkRectangle old_area;
4411   GdkRectangle new_area;
4412   GdkRectangle common;
4413   cairo_region_t *invalid_region;
4414
4415   old_area.x = MIN (tree_view->priv->press_start_x, tree_view->priv->rubber_band_x);
4416   old_area.y = MIN (tree_view->priv->press_start_y, tree_view->priv->rubber_band_y) - tree_view->priv->dy;
4417   old_area.width = ABS (tree_view->priv->rubber_band_x - tree_view->priv->press_start_x) + 1;
4418   old_area.height = ABS (tree_view->priv->rubber_band_y - tree_view->priv->press_start_y) + 1;
4419
4420   gdk_window_get_device_position (tree_view->priv->bin_window,
4421                                   gdk_device_manager_get_client_pointer (
4422                                     gdk_display_get_device_manager (
4423                                       gtk_widget_get_display (GTK_WIDGET (tree_view)))),
4424                                   &x, &y, NULL);
4425
4426   x = MAX (x, 0);
4427   y = MAX (y, 0) + tree_view->priv->dy;
4428
4429   new_area.x = MIN (tree_view->priv->press_start_x, x);
4430   new_area.y = MIN (tree_view->priv->press_start_y, y) - tree_view->priv->dy;
4431   new_area.width = ABS (x - tree_view->priv->press_start_x) + 1;
4432   new_area.height = ABS (y - tree_view->priv->press_start_y) + 1;
4433
4434   invalid_region = cairo_region_create_rectangle (&old_area);
4435   cairo_region_union_rectangle (invalid_region, &new_area);
4436
4437   gdk_rectangle_intersect (&old_area, &new_area, &common);
4438   if (common.width > 2 && common.height > 2)
4439     {
4440       cairo_region_t *common_region;
4441
4442       /* make sure the border is invalidated */
4443       common.x += 1;
4444       common.y += 1;
4445       common.width -= 2;
4446       common.height -= 2;
4447
4448       common_region = cairo_region_create_rectangle (&common);
4449
4450       cairo_region_subtract (invalid_region, common_region);
4451       cairo_region_destroy (common_region);
4452     }
4453
4454   gdk_window_invalidate_region (tree_view->priv->bin_window, invalid_region, TRUE);
4455
4456   cairo_region_destroy (invalid_region);
4457
4458   tree_view->priv->rubber_band_x = x;
4459   tree_view->priv->rubber_band_y = y;
4460
4461   gtk_tree_view_update_rubber_band_selection (tree_view);
4462 }
4463
4464 static void
4465 gtk_tree_view_paint_rubber_band (GtkTreeView  *tree_view,
4466                                  cairo_t      *cr)
4467 {
4468   GdkRectangle rect;
4469   GtkStyleContext *context;
4470
4471   cairo_save (cr);
4472
4473   context = gtk_widget_get_style_context (GTK_WIDGET (tree_view));
4474
4475   gtk_style_context_save (context);
4476   gtk_style_context_add_class (context, GTK_STYLE_CLASS_RUBBERBAND);
4477
4478   rect.x = MIN (tree_view->priv->press_start_x, tree_view->priv->rubber_band_x);
4479   rect.y = MIN (tree_view->priv->press_start_y, tree_view->priv->rubber_band_y) - tree_view->priv->dy;
4480   rect.width = ABS (tree_view->priv->press_start_x - tree_view->priv->rubber_band_x) + 1;
4481   rect.height = ABS (tree_view->priv->press_start_y - tree_view->priv->rubber_band_y) + 1;
4482
4483   gdk_cairo_rectangle (cr, &rect);
4484   cairo_clip (cr);
4485
4486   gtk_render_background (context, cr,
4487                          rect.x, rect.y,
4488                          rect.width, rect.height);
4489   gtk_render_frame (context, cr,
4490                     rect.x, rect.y,
4491                     rect.width, rect.height);
4492
4493   gtk_style_context_restore (context);
4494   cairo_restore (cr);
4495 }
4496
4497 static gboolean
4498 gtk_tree_view_motion_bin_window (GtkWidget      *widget,
4499                                  GdkEventMotion *event)
4500 {
4501   GtkTreeView *tree_view;
4502   GtkRBTree *tree;
4503   GtkRBNode *node;
4504   gint new_y;
4505
4506   tree_view = (GtkTreeView *) widget;
4507
4508   if (tree_view->priv->tree == NULL)
4509     return FALSE;
4510
4511   if (tree_view->priv->rubber_band_status == RUBBER_BAND_MAYBE_START)
4512     {
4513       gtk_grab_add (GTK_WIDGET (tree_view));
4514       gtk_tree_view_update_rubber_band (tree_view);
4515
4516       tree_view->priv->rubber_band_status = RUBBER_BAND_ACTIVE;
4517     }
4518   else if (tree_view->priv->rubber_band_status == RUBBER_BAND_ACTIVE)
4519     {
4520       gtk_tree_view_update_rubber_band (tree_view);
4521
4522       add_scroll_timeout (tree_view);
4523     }
4524
4525   /* only check for an initiated drag when a button is pressed */
4526   if (tree_view->priv->pressed_button >= 0
4527       && !tree_view->priv->rubber_band_status)
4528     gtk_tree_view_maybe_begin_dragging_row (tree_view, event);
4529
4530   new_y = TREE_WINDOW_Y_TO_RBTREE_Y(tree_view, event->y);
4531   if (new_y < 0)
4532     new_y = 0;
4533
4534   _gtk_rbtree_find_offset (tree_view->priv->tree, new_y, &tree, &node);
4535
4536   /* If we are currently pressing down a button, we don't want to prelight anything else. */
4537   if ((tree_view->priv->button_pressed_node != NULL) &&
4538       (tree_view->priv->button_pressed_node != node))
4539     node = NULL;
4540
4541   tree_view->priv->event_last_x = event->x;
4542   tree_view->priv->event_last_y = event->y;
4543
4544   prelight_or_select (tree_view, tree, node, event->x, event->y);
4545
4546   return TRUE;
4547 }
4548
4549 static gboolean
4550 gtk_tree_view_motion (GtkWidget      *widget,
4551                       GdkEventMotion *event)
4552 {
4553   GtkTreeView *tree_view;
4554
4555   tree_view = (GtkTreeView *) widget;
4556
4557   /* Resizing a column */
4558   if (tree_view->priv->in_column_resize)
4559     return gtk_tree_view_motion_resize_column (widget, event);
4560
4561   /* Drag column */
4562   if (tree_view->priv->in_column_drag)
4563     return gtk_tree_view_motion_drag_column (widget, event);
4564
4565   /* Sanity check it */
4566   if (event->window == tree_view->priv->bin_window)
4567     return gtk_tree_view_motion_bin_window (widget, event);
4568
4569   return FALSE;
4570 }
4571
4572 /* Invalidate the focus rectangle near the edge of the bin_window; used when
4573  * the tree is empty.
4574  */
4575 static void
4576 invalidate_empty_focus (GtkTreeView *tree_view)
4577 {
4578   GdkRectangle area;
4579
4580   if (!gtk_widget_has_focus (GTK_WIDGET (tree_view)))
4581     return;
4582
4583   area.x = 0;
4584   area.y = 0;
4585   area.width = gdk_window_get_width (tree_view->priv->bin_window);
4586   area.height = gdk_window_get_height (tree_view->priv->bin_window);
4587   gdk_window_invalidate_rect (tree_view->priv->bin_window, &area, FALSE);
4588 }
4589
4590 /* Draws a focus rectangle near the edge of the bin_window; used when the tree
4591  * is empty.
4592  */
4593 static void
4594 draw_empty_focus (GtkTreeView *tree_view, cairo_t *cr)
4595 {
4596   GtkWidget *widget = GTK_WIDGET (tree_view);
4597   gint w, h;
4598
4599   if (!gtk_widget_has_visible_focus (widget))
4600     return;
4601
4602   w = gdk_window_get_width (tree_view->priv->bin_window) - 2;
4603   h = gdk_window_get_height (tree_view->priv->bin_window) - 2;
4604
4605   if (w > 0 && h > 0)
4606     {
4607       GtkStyleContext *context;
4608
4609       context = gtk_widget_get_style_context (widget);
4610
4611       gtk_render_focus (context, cr, 1, 1, w, h);
4612     }
4613 }
4614
4615 typedef enum {
4616   GTK_TREE_VIEW_GRID_LINE,
4617   GTK_TREE_VIEW_TREE_LINE,
4618   GTK_TREE_VIEW_FOREGROUND_LINE
4619 } GtkTreeViewLineType;
4620
4621 static void
4622 gtk_tree_view_draw_line (GtkTreeView         *tree_view,
4623                          cairo_t             *cr,
4624                          GtkTreeViewLineType  type,
4625                          int                  x1,
4626                          int                  y1,
4627                          int                  x2,
4628                          int                  y2)
4629 {
4630   cairo_save (cr);
4631
4632   switch (type)
4633     {
4634     case GTK_TREE_VIEW_TREE_LINE:
4635       cairo_set_source_rgb (cr, 0, 0, 0);
4636       cairo_set_line_width (cr, tree_view->priv->tree_line_width);
4637       if (tree_view->priv->tree_line_dashes[0])
4638         cairo_set_dash (cr,
4639                         tree_view->priv->tree_line_dashes,
4640                         2, 0.5);
4641       break;
4642     case GTK_TREE_VIEW_GRID_LINE:
4643       cairo_set_source_rgb (cr, 0, 0, 0);
4644       cairo_set_line_width (cr, tree_view->priv->grid_line_width);
4645       if (tree_view->priv->grid_line_dashes[0])
4646         cairo_set_dash (cr,
4647                         tree_view->priv->grid_line_dashes,
4648                         2, 0.5);
4649       break;
4650     default:
4651       g_assert_not_reached ();
4652       /* fall through */
4653     case GTK_TREE_VIEW_FOREGROUND_LINE:
4654       {
4655         GtkStyleContext *context;
4656         GtkStateFlags state;
4657         GdkRGBA color;
4658
4659         context = gtk_widget_get_style_context (GTK_WIDGET (tree_view));
4660         state = gtk_widget_get_state_flags (GTK_WIDGET (tree_view));
4661
4662         cairo_set_line_width (cr, 1.0);
4663         gtk_style_context_get_color (context, state, &color);
4664         gdk_cairo_set_source_rgba (cr, &color);
4665       }
4666
4667       break;
4668     }
4669
4670   cairo_move_to (cr, x1 + 0.5, y1 + 0.5);
4671   cairo_line_to (cr, x2 + 0.5, y2 + 0.5);
4672   cairo_stroke (cr);
4673
4674   cairo_restore (cr);
4675 }
4676
4677 static void
4678 gtk_tree_view_draw_grid_lines (GtkTreeView    *tree_view,
4679                                cairo_t        *cr,
4680                                gint            n_visible_columns)
4681 {
4682   GList *list = tree_view->priv->columns;
4683   gint i = 0;
4684   gint current_x = 0;
4685
4686   if (tree_view->priv->grid_lines != GTK_TREE_VIEW_GRID_LINES_VERTICAL
4687       && tree_view->priv->grid_lines != GTK_TREE_VIEW_GRID_LINES_BOTH)
4688     return;
4689
4690   /* Only draw the lines for visible rows and columns */
4691   for (list = tree_view->priv->columns; list; list = list->next, i++)
4692     {
4693       GtkTreeViewColumn *column = list->data;
4694
4695       /* We don't want a line for the last column */
4696       if (i == n_visible_columns - 1)
4697         break;
4698
4699       if (!gtk_tree_view_column_get_visible (column))
4700         continue;
4701
4702       current_x += gtk_tree_view_column_get_width (column);
4703
4704       gtk_tree_view_draw_line (tree_view, cr,
4705                                GTK_TREE_VIEW_GRID_LINE,
4706                                current_x - 1, 0,
4707                                current_x - 1, tree_view->priv->height);
4708     }
4709 }
4710
4711 /* Warning: Very scary function.
4712  * Modify at your own risk
4713  *
4714  * KEEP IN SYNC WITH gtk_tree_view_create_row_drag_icon()!
4715  * FIXME: It's not...
4716  */
4717 static gboolean
4718 gtk_tree_view_bin_draw (GtkWidget      *widget,
4719                         cairo_t        *cr)
4720 {
4721   GtkTreeView *tree_view = GTK_TREE_VIEW (widget);
4722   GtkTreePath *path;
4723   GtkRBTree *tree;
4724   GList *list;
4725   GtkRBNode *node;
4726   GtkRBNode *drag_highlight = NULL;
4727   GtkRBTree *drag_highlight_tree = NULL;
4728   GtkTreeIter iter;
4729   gint new_y;
4730   gint y_offset, cell_offset;
4731   gint max_height;
4732   gint depth;
4733   GdkRectangle background_area;
4734   GdkRectangle cell_area;
4735   GdkRectangle clip;
4736   guint flags;
4737   gint highlight_x;
4738   gint expander_cell_width;
4739   gint bin_window_width;
4740   gint bin_window_height;
4741   GtkTreePath *drag_dest_path;
4742   GList *first_column, *last_column;
4743   gint vertical_separator;
4744   gint horizontal_separator;
4745   gboolean allow_rules;
4746   gboolean has_can_focus_cell;
4747   gboolean rtl;
4748   gint n_visible_columns;
4749   gint grid_line_width;
4750   gint expander_size;
4751   gboolean draw_vgrid_lines, draw_hgrid_lines;
4752   GtkStyleContext *context;
4753   gboolean parity;
4754
4755   rtl = (gtk_widget_get_direction (widget) == GTK_TEXT_DIR_RTL);
4756   context = gtk_widget_get_style_context (widget);
4757
4758   gtk_widget_style_get (widget,
4759                         "horizontal-separator", &horizontal_separator,
4760                         "vertical-separator", &vertical_separator,
4761                         "allow-rules", &allow_rules,
4762                         NULL);
4763
4764   if (tree_view->priv->tree == NULL)
4765     {
4766       draw_empty_focus (tree_view, cr);
4767       return TRUE;
4768     }
4769
4770   bin_window_width = gdk_window_get_width (tree_view->priv->bin_window);
4771   bin_window_height = gdk_window_get_height (tree_view->priv->bin_window);
4772   cairo_rectangle (cr, 0, 0, bin_window_width, bin_window_height);
4773   cairo_clip (cr);
4774   if (!gdk_cairo_get_clip_rectangle (cr, &clip))
4775     return TRUE;
4776
4777   new_y = TREE_WINDOW_Y_TO_RBTREE_Y (tree_view, clip.y);
4778
4779   if (new_y < 0)
4780     new_y = 0;
4781   y_offset = -_gtk_rbtree_find_offset (tree_view->priv->tree, new_y, &tree, &node);
4782
4783   if (tree_view->priv->height < bin_window_height)
4784     {
4785       gtk_style_context_save (context);
4786       gtk_style_context_add_class (context, GTK_STYLE_CLASS_CELL);
4787
4788       gtk_render_background (context, cr,
4789                              0, tree_view->priv->height,
4790                              bin_window_width,
4791                              bin_window_height - tree_view->priv->height);
4792
4793       gtk_style_context_restore (context);
4794     }
4795
4796   if (node == NULL)
4797     return TRUE;
4798
4799   /* find the path for the node */
4800   path = _gtk_tree_path_new_from_rbtree (tree, node);
4801   gtk_tree_model_get_iter (tree_view->priv->model,
4802                            &iter,
4803                            path);
4804   depth = gtk_tree_path_get_depth (path);
4805   gtk_tree_path_free (path);
4806
4807   drag_dest_path = NULL;
4808
4809   if (tree_view->priv->drag_dest_row)
4810     drag_dest_path = gtk_tree_row_reference_get_path (tree_view->priv->drag_dest_row);
4811
4812   if (drag_dest_path)
4813     _gtk_tree_view_find_node (tree_view, drag_dest_path,
4814                               &drag_highlight_tree, &drag_highlight);
4815
4816   draw_vgrid_lines =
4817     tree_view->priv->grid_lines == GTK_TREE_VIEW_GRID_LINES_VERTICAL
4818     || tree_view->priv->grid_lines == GTK_TREE_VIEW_GRID_LINES_BOTH;
4819   draw_hgrid_lines =
4820     tree_view->priv->grid_lines == GTK_TREE_VIEW_GRID_LINES_HORIZONTAL
4821     || tree_view->priv->grid_lines == GTK_TREE_VIEW_GRID_LINES_BOTH;
4822   expander_size = gtk_tree_view_get_expander_size (tree_view);
4823
4824   if (draw_vgrid_lines || draw_hgrid_lines)
4825     gtk_widget_style_get (widget, "grid-line-width", &grid_line_width, NULL);
4826
4827   n_visible_columns = 0;
4828   for (list = tree_view->priv->columns; list; list = list->next)
4829     {
4830       if (!gtk_tree_view_column_get_visible (GTK_TREE_VIEW_COLUMN (list->data)))
4831         continue;
4832       n_visible_columns ++;
4833     }
4834
4835   /* Find the last column */
4836   for (last_column = g_list_last (tree_view->priv->columns);
4837        last_column &&
4838        !(gtk_tree_view_column_get_visible (GTK_TREE_VIEW_COLUMN (last_column->data)));
4839        last_column = last_column->prev)
4840     ;
4841
4842   /* and the first */
4843   for (first_column = g_list_first (tree_view->priv->columns);
4844        first_column &&
4845        !(gtk_tree_view_column_get_visible (GTK_TREE_VIEW_COLUMN (first_column->data)));
4846        first_column = first_column->next)
4847     ;
4848
4849   /* Actually process the expose event.  To do this, we want to
4850    * start at the first node of the event, and walk the tree in
4851    * order, drawing each successive node.
4852    */
4853
4854   parity = !(_gtk_rbtree_node_get_index (tree, node) % 2);
4855
4856   do
4857     {
4858       gboolean is_separator = FALSE;
4859       gboolean is_first = FALSE;
4860       gboolean is_last = FALSE;
4861       gint n_col = 0;
4862
4863       parity = !parity;
4864       is_separator = row_is_separator (tree_view, &iter, NULL);
4865
4866       max_height = gtk_tree_view_get_row_height (tree_view, node);
4867
4868       cell_offset = 0;
4869       highlight_x = 0; /* should match x coord of first cell */
4870       expander_cell_width = 0;
4871
4872       background_area.y = y_offset + clip.y;
4873       background_area.height = max_height;
4874
4875       flags = 0;
4876
4877       if (GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_PRELIT))
4878         flags |= GTK_CELL_RENDERER_PRELIT;
4879
4880       if (GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_SELECTED))
4881         flags |= GTK_CELL_RENDERER_SELECTED;
4882
4883       /* we *need* to set cell data on all cells before the call
4884        * to _has_can_focus_cell, else _has_can_focus_cell() does not
4885        * return a correct value.
4886        */
4887       for (list = (rtl ? g_list_last (tree_view->priv->columns) : g_list_first (tree_view->priv->columns));
4888            list;
4889            list = (rtl ? list->prev : list->next))
4890         {
4891           GtkTreeViewColumn *column = list->data;
4892           gtk_tree_view_column_cell_set_cell_data (column,
4893                                                    tree_view->priv->model,
4894                                                    &iter,
4895                                                    GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_PARENT),
4896                                                    node->children?TRUE:FALSE);
4897         }
4898
4899       has_can_focus_cell = gtk_tree_view_has_can_focus_cell (tree_view);
4900
4901       for (list = (rtl ? g_list_last (tree_view->priv->columns) : g_list_first (tree_view->priv->columns));
4902            list;
4903            list = (rtl ? list->prev : list->next))
4904         {
4905           GtkTreeViewColumn *column = list->data;
4906           GtkRegionFlags row_flags = 0, column_flags = 0;
4907           GtkStateFlags state = 0;
4908           gint width;
4909           gboolean draw_focus;
4910
4911           if (!gtk_tree_view_column_get_visible (column))
4912             continue;
4913
4914           n_col++;
4915           width = gtk_tree_view_column_get_width (column);
4916
4917           if (cell_offset > clip.x + clip.width ||
4918               cell_offset + width < clip.x)
4919             {
4920               cell_offset += width;
4921               continue;
4922             }
4923
4924           if (gtk_tree_view_column_get_sort_indicator (column))
4925             flags |= GTK_CELL_RENDERER_SORTED;
4926           else
4927             flags &= ~GTK_CELL_RENDERER_SORTED;
4928
4929           if (tree_view->priv->cursor_node == node)
4930             flags |= GTK_CELL_RENDERER_FOCUSED;
4931           else
4932             flags &= ~GTK_CELL_RENDERER_FOCUSED;
4933
4934           if (GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_PARENT))
4935             flags |= GTK_CELL_RENDERER_EXPANDABLE;
4936           else
4937             flags &= ~GTK_CELL_RENDERER_EXPANDABLE;
4938
4939           if (node->children)
4940             flags |= GTK_CELL_RENDERER_EXPANDED;
4941           else
4942             flags &= ~GTK_CELL_RENDERER_EXPANDED;
4943
4944           background_area.x = cell_offset;
4945           background_area.width = width;
4946
4947           cell_area = background_area;
4948           cell_area.y += vertical_separator / 2;
4949           cell_area.x += horizontal_separator / 2;
4950           cell_area.height -= vertical_separator;
4951           cell_area.width -= horizontal_separator;
4952
4953           if (draw_vgrid_lines)
4954             {
4955               if (list == first_column)
4956                 {
4957                   cell_area.width -= grid_line_width / 2;
4958                 }
4959               else if (list == last_column)
4960                 {
4961                   cell_area.x += grid_line_width / 2;
4962                   cell_area.width -= grid_line_width / 2;
4963                 }
4964               else
4965                 {
4966                   cell_area.x += grid_line_width / 2;
4967                   cell_area.width -= grid_line_width;
4968                 }
4969             }
4970
4971           if (draw_hgrid_lines)
4972             {
4973               cell_area.y += grid_line_width / 2;
4974               cell_area.height -= grid_line_width;
4975             }
4976
4977           if (!gdk_rectangle_intersect (&clip, &background_area, NULL))
4978             {
4979               cell_offset += gtk_tree_view_column_get_width (column);
4980               continue;
4981             }
4982
4983           gtk_tree_view_column_cell_set_cell_data (column,
4984                                                    tree_view->priv->model,
4985                                                    &iter,
4986                                                    GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_PARENT),
4987                                                    node->children?TRUE:FALSE);
4988
4989           /* Select the detail for drawing the cell.  relevant
4990            * factors are parity, sortedness, and whether to
4991            * display rules.
4992            */
4993           if (allow_rules && tree_view->priv->has_rules)
4994             {
4995               if (parity)
4996                 row_flags |= GTK_REGION_ODD;
4997               else
4998                 row_flags |= GTK_REGION_EVEN;
4999             }
5000
5001           if ((flags & GTK_CELL_RENDERER_SORTED) &&
5002               n_visible_columns >= 3)
5003             column_flags |= GTK_REGION_SORTED;
5004
5005           is_first = (rtl ? !list->next : !list->prev);
5006           is_last = (rtl ? !list->prev : !list->next);
5007
5008           if (is_first)
5009             column_flags |= GTK_REGION_FIRST;
5010
5011           if (is_last)
5012             column_flags |= GTK_REGION_LAST;
5013
5014           if ((n_col % 2) == 0)
5015             column_flags |= GTK_REGION_EVEN;
5016           else
5017             column_flags |= GTK_REGION_ODD;
5018
5019           gtk_style_context_save (context);
5020
5021           state = gtk_cell_renderer_get_state (NULL, widget, flags);
5022           gtk_style_context_set_state (context, state);
5023
5024           gtk_style_context_add_class (context, GTK_STYLE_CLASS_CELL);
5025           gtk_style_context_add_region (context, GTK_STYLE_REGION_ROW, row_flags);
5026           gtk_style_context_add_region (context, GTK_STYLE_REGION_COLUMN, column_flags);
5027
5028           if (node == tree_view->priv->cursor_node && has_can_focus_cell
5029               && ((column == tree_view->priv->focus_column
5030                    && tree_view->priv->draw_keyfocus &&
5031                    gtk_widget_has_visible_focus (widget))
5032                   || (column == tree_view->priv->edited_column)))
5033             draw_focus = TRUE;
5034           else
5035             draw_focus = FALSE;
5036
5037           /* Draw background */
5038           gtk_render_background (context, cr,
5039                                  background_area.x,
5040                                  background_area.y,
5041                                  background_area.width,
5042                                  background_area.height);
5043
5044           /* Draw frame */
5045           gtk_render_frame (context, cr,
5046                             background_area.x,
5047                             background_area.y,
5048                             background_area.width,
5049                             background_area.height);
5050
5051           if (gtk_tree_view_is_expander_column (tree_view, column))
5052             {
5053               if (!rtl)
5054                 cell_area.x += (depth - 1) * tree_view->priv->level_indentation;
5055               cell_area.width -= (depth - 1) * tree_view->priv->level_indentation;
5056
5057               if (gtk_tree_view_draw_expanders (tree_view))
5058                 {
5059                   int expander_size = gtk_tree_view_get_expander_size (tree_view);
5060                   if (!rtl)
5061                     cell_area.x += depth * expander_size;
5062                   cell_area.width -= depth * expander_size;
5063                 }
5064
5065               /* If we have an expander column, the highlight underline
5066                * starts with that column, so that it indicates which
5067                * level of the tree we're dropping at.
5068                */
5069               highlight_x = cell_area.x;
5070               expander_cell_width = cell_area.width;
5071
5072               if (is_separator)
5073                 {
5074                   gtk_style_context_save (context);
5075                   gtk_style_context_add_class (context, GTK_STYLE_CLASS_SEPARATOR);
5076
5077                   gtk_render_line (context, cr,
5078                                    cell_area.x,
5079                                    cell_area.y + cell_area.height / 2,
5080                                    cell_area.x + cell_area.width,
5081                                    cell_area.y + cell_area.height / 2);
5082
5083                   gtk_style_context_restore (context);
5084                 }
5085               else
5086                 {
5087                   _gtk_tree_view_column_cell_render (column,
5088                                                      cr,
5089                                                      &background_area,
5090                                                      &cell_area,
5091                                                      flags,
5092                                                      draw_focus);
5093                 }
5094
5095               if (gtk_tree_view_draw_expanders (tree_view)
5096                   && (node->flags & GTK_RBNODE_IS_PARENT) == GTK_RBNODE_IS_PARENT)
5097                 {
5098                   gtk_tree_view_draw_arrow (GTK_TREE_VIEW (widget),
5099                                             cr,
5100                                             tree,
5101                                             node);
5102                 }
5103             }
5104           else
5105             {
5106               if (is_separator)
5107                 {
5108                   gtk_style_context_save (context);
5109                   gtk_style_context_add_class (context, GTK_STYLE_CLASS_SEPARATOR);
5110
5111                   gtk_render_line (context, cr,
5112                                    cell_area.x,
5113                                    cell_area.y + cell_area.height / 2,
5114                                    cell_area.x + cell_area.width,
5115                                    cell_area.y + cell_area.height / 2);
5116
5117                   gtk_style_context_restore (context);
5118                 }
5119               else
5120                 _gtk_tree_view_column_cell_render (column,
5121                                                    cr,
5122                                                    &background_area,
5123                                                    &cell_area,
5124                                                    flags,
5125                                                    draw_focus);
5126             }
5127
5128           if (draw_hgrid_lines)
5129             {
5130               if (background_area.y > 0)
5131                 gtk_tree_view_draw_line (tree_view, cr,
5132                                          GTK_TREE_VIEW_GRID_LINE,
5133                                          background_area.x, background_area.y,
5134                                          background_area.x + background_area.width,
5135                                          background_area.y);
5136
5137               if (y_offset + max_height >= clip.height)
5138                 gtk_tree_view_draw_line (tree_view, cr,
5139                                          GTK_TREE_VIEW_GRID_LINE,
5140                                          background_area.x, background_area.y + max_height,
5141                                          background_area.x + background_area.width,
5142                                          background_area.y + max_height);
5143             }
5144
5145           if (gtk_tree_view_is_expander_column (tree_view, column) &&
5146               tree_view->priv->tree_lines_enabled)
5147             {
5148               gint x = background_area.x;
5149               gint mult = rtl ? -1 : 1;
5150               gint y0 = background_area.y;
5151               gint y1 = background_area.y + background_area.height/2;
5152               gint y2 = background_area.y + background_area.height;
5153
5154               if (rtl)
5155                 x += background_area.width - 1;
5156
5157               if ((node->flags & GTK_RBNODE_IS_PARENT) == GTK_RBNODE_IS_PARENT
5158                   && depth > 1)
5159                 {
5160                   gtk_tree_view_draw_line (tree_view, cr,
5161                                            GTK_TREE_VIEW_TREE_LINE,
5162                                            x + expander_size * (depth - 1.5) * mult,
5163                                            y1,
5164                                            x + expander_size * (depth - 1.1) * mult,
5165                                            y1);
5166                 }
5167               else if (depth > 1)
5168                 {
5169                   gtk_tree_view_draw_line (tree_view, cr,
5170                                            GTK_TREE_VIEW_TREE_LINE,
5171                                            x + expander_size * (depth - 1.5) * mult,
5172                                            y1,
5173                                            x + expander_size * (depth - 0.5) * mult,
5174                                            y1);
5175                 }
5176
5177               if (depth > 1)
5178                 {
5179                   gint i;
5180                   GtkRBNode *tmp_node;
5181                   GtkRBTree *tmp_tree;
5182
5183                   if (!_gtk_rbtree_next (tree, node))
5184                     gtk_tree_view_draw_line (tree_view, cr,
5185                                              GTK_TREE_VIEW_TREE_LINE,
5186                                              x + expander_size * (depth - 1.5) * mult,
5187                                              y0,
5188                                              x + expander_size * (depth - 1.5) * mult,
5189                                              y1);
5190                   else
5191                     gtk_tree_view_draw_line (tree_view, cr,
5192                                              GTK_TREE_VIEW_TREE_LINE,
5193                                              x + expander_size * (depth - 1.5) * mult,
5194                                              y0,
5195                                              x + expander_size * (depth - 1.5) * mult,
5196                                              y2);
5197
5198                   tmp_node = tree->parent_node;
5199                   tmp_tree = tree->parent_tree;
5200
5201                   for (i = depth - 2; i > 0; i--)
5202                     {
5203                       if (_gtk_rbtree_next (tmp_tree, tmp_node))
5204                         gtk_tree_view_draw_line (tree_view, cr,
5205                                                  GTK_TREE_VIEW_TREE_LINE,
5206                                                  x + expander_size * (i - 0.5) * mult,
5207                                                  y0,
5208                                                  x + expander_size * (i - 0.5) * mult,
5209                                                  y2);
5210
5211                       tmp_node = tmp_tree->parent_node;
5212                       tmp_tree = tmp_tree->parent_tree;
5213                     }
5214                 }
5215             }
5216
5217           gtk_style_context_restore (context);
5218           cell_offset += gtk_tree_view_column_get_width (column);
5219         }
5220
5221       if (node == drag_highlight)
5222         {
5223           /* Draw indicator for the drop
5224            */
5225           gint highlight_y = -1;
5226           GtkRBTree *tree = NULL;
5227           GtkRBNode *node = NULL;
5228
5229           gtk_style_context_save (context);
5230           gtk_style_context_add_class (context, GTK_STYLE_CLASS_DND);
5231
5232           switch (tree_view->priv->drag_dest_pos)
5233             {
5234             case GTK_TREE_VIEW_DROP_BEFORE:
5235               highlight_y = background_area.y - 1;
5236               if (highlight_y < 0)
5237                       highlight_y = 0;
5238               break;
5239
5240             case GTK_TREE_VIEW_DROP_AFTER:
5241               highlight_y = background_area.y + background_area.height - 1;
5242               break;
5243
5244             case GTK_TREE_VIEW_DROP_INTO_OR_BEFORE:
5245             case GTK_TREE_VIEW_DROP_INTO_OR_AFTER:
5246               _gtk_tree_view_find_node (tree_view, drag_dest_path, &tree, &node);
5247
5248               if (tree == NULL)
5249                 break;
5250
5251               gtk_render_frame (context, cr,
5252                                 0, gtk_tree_view_get_row_y_offset (tree_view, tree, node),
5253                                 gdk_window_get_width (tree_view->priv->bin_window),
5254                                 gtk_tree_view_get_row_height (tree_view, node));
5255               break;
5256             }
5257
5258           if (highlight_y >= 0)
5259             {
5260               gtk_tree_view_draw_line (tree_view, cr,
5261                                        GTK_TREE_VIEW_FOREGROUND_LINE,
5262                                        rtl ? highlight_x + expander_cell_width : highlight_x,
5263                                        highlight_y,
5264                                        rtl ? 0 : bin_window_width,
5265                                        highlight_y);
5266             }
5267
5268           gtk_style_context_restore (context);
5269         }
5270
5271       /* draw the big row-spanning focus rectangle, if needed */
5272       if (!has_can_focus_cell && node == tree_view->priv->cursor_node &&
5273           tree_view->priv->draw_keyfocus &&
5274           gtk_widget_has_visible_focus (widget))
5275         {
5276           gint tmp_y, tmp_height;
5277           GtkStateFlags focus_rect_state = 0;
5278
5279           gtk_style_context_save (context);
5280
5281           focus_rect_state = gtk_cell_renderer_get_state (NULL, widget, flags);
5282           gtk_style_context_set_state (context, focus_rect_state);
5283
5284           if (draw_hgrid_lines)
5285             {
5286               tmp_y = gtk_tree_view_get_row_y_offset (tree_view, tree, node) + grid_line_width / 2;
5287               tmp_height = gtk_tree_view_get_row_height (tree_view, node) - grid_line_width;
5288             }
5289           else
5290             {
5291               tmp_y = gtk_tree_view_get_row_y_offset (tree_view, tree, node);
5292               tmp_height = gtk_tree_view_get_row_height (tree_view, node);
5293             }
5294
5295           gtk_render_focus (context, cr,
5296                             0, tmp_y,
5297                             gdk_window_get_width (tree_view->priv->bin_window),
5298                             tmp_height);
5299
5300           gtk_style_context_restore (context);
5301         }
5302
5303       y_offset += max_height;
5304       if (node->children)
5305         {
5306           GtkTreeIter parent = iter;
5307           gboolean has_child;
5308
5309           tree = node->children;
5310           node = _gtk_rbtree_first (tree);
5311
5312           has_child = gtk_tree_model_iter_children (tree_view->priv->model,
5313                                                     &iter,
5314                                                     &parent);
5315           depth++;
5316
5317           /* Sanity Check! */
5318           TREE_VIEW_INTERNAL_ASSERT (has_child, FALSE);
5319         }
5320       else
5321         {
5322           gboolean done = FALSE;
5323
5324           do
5325             {
5326               node = _gtk_rbtree_next (tree, node);
5327               if (node != NULL)
5328                 {
5329                   gboolean has_next = gtk_tree_model_iter_next (tree_view->priv->model, &iter);
5330                   done = TRUE;
5331
5332                   /* Sanity Check! */
5333                   TREE_VIEW_INTERNAL_ASSERT (has_next, FALSE);
5334                 }
5335               else
5336                 {
5337                   GtkTreeIter parent_iter = iter;
5338                   gboolean has_parent;
5339
5340                   node = tree->parent_node;
5341                   tree = tree->parent_tree;
5342                   if (tree == NULL)
5343                     /* we should go to done to free some memory */
5344                     goto done;
5345                   has_parent = gtk_tree_model_iter_parent (tree_view->priv->model,
5346                                                            &iter,
5347                                                            &parent_iter);
5348                   depth--;
5349
5350                   /* Sanity check */
5351                   TREE_VIEW_INTERNAL_ASSERT (has_parent, FALSE);
5352                 }
5353             }
5354           while (!done);
5355         }
5356     }
5357   while (y_offset < clip.height);
5358
5359 done:
5360   gtk_tree_view_draw_grid_lines (tree_view, cr, n_visible_columns);
5361
5362   if (tree_view->priv->rubber_band_status == RUBBER_BAND_ACTIVE)
5363     gtk_tree_view_paint_rubber_band (tree_view, cr);
5364
5365   if (drag_dest_path)
5366     gtk_tree_path_free (drag_dest_path);
5367
5368   return FALSE;
5369 }
5370
5371 static gboolean
5372 gtk_tree_view_draw (GtkWidget *widget,
5373                     cairo_t   *cr)
5374 {
5375   GtkTreeView *tree_view = GTK_TREE_VIEW (widget);
5376   GtkWidget   *button;
5377   GtkStyleContext *context;
5378
5379   context = gtk_widget_get_style_context (widget);
5380   gtk_render_background (context, cr,
5381                          0, 0,
5382                          gtk_widget_get_allocated_width (widget),
5383                          gtk_widget_get_allocated_height (widget));
5384
5385   if (gtk_cairo_should_draw_window (cr, tree_view->priv->bin_window))
5386     {
5387       GList *tmp_list;
5388
5389       cairo_save (cr);
5390
5391       gtk_cairo_transform_to_window (cr, widget, tree_view->priv->bin_window);
5392       gtk_tree_view_bin_draw (widget, cr);
5393
5394       cairo_restore (cr);
5395
5396       /* We can't just chain up to Container::draw as it will try to send the
5397        * event to the headers, so we handle propagating it to our children
5398        * (eg. widgets being edited) ourselves.
5399        */
5400       tmp_list = tree_view->priv->children;
5401       while (tmp_list)
5402         {
5403           GtkTreeViewChild *child = tmp_list->data;
5404           tmp_list = tmp_list->next;
5405
5406           gtk_container_propagate_draw (GTK_CONTAINER (tree_view), child->widget, cr);
5407         }
5408     }
5409
5410   gtk_style_context_save (context);
5411   gtk_style_context_remove_class (context, GTK_STYLE_CLASS_VIEW);
5412
5413   if (gtk_cairo_should_draw_window (cr, tree_view->priv->header_window))
5414     {
5415       GList *list;
5416
5417       for (list = tree_view->priv->columns; list != NULL; list = list->next)
5418         {
5419           GtkTreeViewColumn *column = list->data;
5420
5421           if (column == tree_view->priv->drag_column)
5422             continue;
5423
5424           if (gtk_tree_view_column_get_visible (column))
5425             {
5426               button = gtk_tree_view_column_get_button (column);
5427               gtk_container_propagate_draw (GTK_CONTAINER (tree_view),
5428                                             button, cr);
5429             }
5430         }
5431     }
5432
5433   if (tree_view->priv->drag_window &&
5434       gtk_cairo_should_draw_window (cr, tree_view->priv->drag_window))
5435     {
5436       button = gtk_tree_view_column_get_button (tree_view->priv->drag_column);
5437       gtk_container_propagate_draw (GTK_CONTAINER (tree_view),
5438                                     button, cr);
5439     }
5440
5441   gtk_style_context_restore (context);
5442
5443   return FALSE;
5444 }
5445
5446 enum
5447 {
5448   DROP_HOME,
5449   DROP_RIGHT,
5450   DROP_LEFT,
5451   DROP_END
5452 };
5453
5454 /* returns 0x1 when no column has been found -- yes it's hackish */
5455 static GtkTreeViewColumn *
5456 gtk_tree_view_get_drop_column (GtkTreeView       *tree_view,
5457                                GtkTreeViewColumn *column,
5458                                gint               drop_position)
5459 {
5460   GtkTreeViewColumn *left_column = NULL;
5461   GtkTreeViewColumn *cur_column = NULL;
5462   GList *tmp_list;
5463
5464   if (!gtk_tree_view_column_get_reorderable (column))
5465     return (GtkTreeViewColumn *)0x1;
5466
5467   switch (drop_position)
5468     {
5469       case DROP_HOME:
5470         /* find first column where we can drop */
5471         tmp_list = tree_view->priv->columns;
5472         if (column == GTK_TREE_VIEW_COLUMN (tmp_list->data))
5473           return (GtkTreeViewColumn *)0x1;
5474
5475         while (tmp_list)
5476           {
5477             g_assert (tmp_list);
5478
5479             cur_column = GTK_TREE_VIEW_COLUMN (tmp_list->data);
5480             tmp_list = tmp_list->next;
5481
5482             if (left_column &&
5483                 gtk_tree_view_column_get_visible (left_column) == FALSE)
5484               continue;
5485
5486             if (!tree_view->priv->column_drop_func)
5487               return left_column;
5488
5489             if (!tree_view->priv->column_drop_func (tree_view, column, left_column, cur_column, tree_view->priv->column_drop_func_data))
5490               {
5491                 left_column = cur_column;
5492                 continue;
5493               }
5494
5495             return left_column;
5496           }
5497
5498         if (!tree_view->priv->column_drop_func)
5499           return left_column;
5500
5501         if (tree_view->priv->column_drop_func (tree_view, column, left_column, NULL, tree_view->priv->column_drop_func_data))
5502           return left_column;
5503         else
5504           return (GtkTreeViewColumn *)0x1;
5505         break;
5506
5507       case DROP_RIGHT:
5508         /* find first column after column where we can drop */
5509         tmp_list = tree_view->priv->columns;
5510
5511         for (; tmp_list; tmp_list = tmp_list->next)
5512           if (GTK_TREE_VIEW_COLUMN (tmp_list->data) == column)
5513             break;
5514
5515         if (!tmp_list || !tmp_list->next)
5516           return (GtkTreeViewColumn *)0x1;
5517
5518         tmp_list = tmp_list->next;
5519         left_column = GTK_TREE_VIEW_COLUMN (tmp_list->data);
5520         tmp_list = tmp_list->next;
5521
5522         while (tmp_list)
5523           {
5524             g_assert (tmp_list);
5525
5526             cur_column = GTK_TREE_VIEW_COLUMN (tmp_list->data);
5527             tmp_list = tmp_list->next;
5528
5529             if (left_column &&
5530                 gtk_tree_view_column_get_visible (left_column) == FALSE)
5531               {
5532                 left_column = cur_column;
5533                 if (tmp_list)
5534                   tmp_list = tmp_list->next;
5535                 continue;
5536               }
5537
5538             if (!tree_view->priv->column_drop_func)
5539               return left_column;
5540
5541             if (!tree_view->priv->column_drop_func (tree_view, column, left_column, cur_column, tree_view->priv->column_drop_func_data))
5542               {
5543                 left_column = cur_column;
5544                 continue;
5545               }
5546
5547             return left_column;
5548           }
5549
5550         if (!tree_view->priv->column_drop_func)
5551           return left_column;
5552
5553         if (tree_view->priv->column_drop_func (tree_view, column, left_column, NULL, tree_view->priv->column_drop_func_data))
5554           return left_column;
5555         else
5556           return (GtkTreeViewColumn *)0x1;
5557         break;
5558
5559       case DROP_LEFT:
5560         /* find first column before column where we can drop */
5561         tmp_list = tree_view->priv->columns;
5562
5563         for (; tmp_list; tmp_list = tmp_list->next)
5564           if (GTK_TREE_VIEW_COLUMN (tmp_list->data) == column)
5565             break;
5566
5567         if (!tmp_list || !tmp_list->prev)
5568           return (GtkTreeViewColumn *)0x1;
5569
5570         tmp_list = tmp_list->prev;
5571         cur_column = GTK_TREE_VIEW_COLUMN (tmp_list->data);
5572         tmp_list = tmp_list->prev;
5573
5574         while (tmp_list)
5575           {
5576             g_assert (tmp_list);
5577
5578             left_column = GTK_TREE_VIEW_COLUMN (tmp_list->data);
5579
5580             if (left_column &&
5581                 gtk_tree_view_column_get_visible (left_column) == FALSE)
5582               {
5583                 /*if (!tmp_list->prev)
5584                   return (GtkTreeViewColumn *)0x1;
5585                   */
5586 /*
5587                 cur_column = GTK_TREE_VIEW_COLUMN (tmp_list->prev->data);
5588                 tmp_list = tmp_list->prev->prev;
5589                 continue;*/
5590
5591                 cur_column = left_column;
5592                 if (tmp_list)
5593                   tmp_list = tmp_list->prev;
5594                 continue;
5595               }
5596
5597             if (!tree_view->priv->column_drop_func)
5598               return left_column;
5599
5600             if (tree_view->priv->column_drop_func (tree_view, column, left_column, cur_column, tree_view->priv->column_drop_func_data))
5601               return left_column;
5602
5603             cur_column = left_column;
5604             tmp_list = tmp_list->prev;
5605           }
5606
5607         if (!tree_view->priv->column_drop_func)
5608           return NULL;
5609
5610         if (tree_view->priv->column_drop_func (tree_view, column, NULL, cur_column, tree_view->priv->column_drop_func_data))
5611           return NULL;
5612         else
5613           return (GtkTreeViewColumn *)0x1;
5614         break;
5615
5616       case DROP_END:
5617         /* same as DROP_HOME case, but doing it backwards */
5618         tmp_list = g_list_last (tree_view->priv->columns);
5619         cur_column = NULL;
5620
5621         if (column == GTK_TREE_VIEW_COLUMN (tmp_list->data))
5622           return (GtkTreeViewColumn *)0x1;
5623
5624         while (tmp_list)
5625           {
5626             g_assert (tmp_list);
5627
5628             left_column = GTK_TREE_VIEW_COLUMN (tmp_list->data);
5629
5630             if (left_column &&
5631                 gtk_tree_view_column_get_visible (left_column) == FALSE)
5632               {
5633                 cur_column = left_column;
5634                 tmp_list = tmp_list->prev;
5635               }
5636
5637             if (!tree_view->priv->column_drop_func)
5638               return left_column;
5639
5640             if (tree_view->priv->column_drop_func (tree_view, column, left_column, cur_column, tree_view->priv->column_drop_func_data))
5641               return left_column;
5642
5643             cur_column = left_column;
5644             tmp_list = tmp_list->prev;
5645           }
5646
5647         if (!tree_view->priv->column_drop_func)
5648           return NULL;
5649
5650         if (tree_view->priv->column_drop_func (tree_view, column, NULL, cur_column, tree_view->priv->column_drop_func_data))
5651           return NULL;
5652         else
5653           return (GtkTreeViewColumn *)0x1;
5654         break;
5655     }
5656
5657   return (GtkTreeViewColumn *)0x1;
5658 }
5659
5660 static gboolean
5661 gtk_tree_view_key_press (GtkWidget   *widget,
5662                          GdkEventKey *event)
5663 {
5664   GtkTreeView *tree_view = (GtkTreeView *) widget;
5665   GtkWidget   *button;
5666
5667   if (tree_view->priv->rubber_band_status)
5668     {
5669       if (event->keyval == GDK_KEY_Escape)
5670         gtk_tree_view_stop_rubber_band (tree_view);
5671
5672       return TRUE;
5673     }
5674
5675   if (tree_view->priv->in_column_drag)
5676     {
5677       if (event->keyval == GDK_KEY_Escape)
5678         {
5679           tree_view->priv->cur_reorder = NULL;
5680           gtk_tree_view_button_release_drag_column (widget, NULL);
5681         }
5682       return TRUE;
5683     }
5684
5685   if (tree_view->priv->headers_visible)
5686     {
5687       GList *focus_column;
5688       gboolean rtl;
5689
5690       rtl = (gtk_widget_get_direction (GTK_WIDGET (tree_view)) == GTK_TEXT_DIR_RTL);
5691
5692       for (focus_column = tree_view->priv->columns;
5693            focus_column;
5694            focus_column = focus_column->next)
5695         {
5696           GtkTreeViewColumn *column = GTK_TREE_VIEW_COLUMN (focus_column->data);
5697
5698           button = gtk_tree_view_column_get_button (column);
5699           if (gtk_widget_has_focus (button))
5700             break;
5701         }
5702
5703       if (focus_column &&
5704           (event->state & GDK_SHIFT_MASK) && (event->state & GDK_MOD1_MASK) &&
5705           (event->keyval == GDK_KEY_Left || event->keyval == GDK_KEY_KP_Left
5706            || event->keyval == GDK_KEY_Right || event->keyval == GDK_KEY_KP_Right))
5707         {
5708           GtkTreeViewColumn *column = GTK_TREE_VIEW_COLUMN (focus_column->data);
5709           gint column_width;
5710
5711           if (!gtk_tree_view_column_get_resizable (column))
5712             {
5713               gtk_widget_error_bell (widget);
5714               return TRUE;
5715             }
5716
5717           column_width = gtk_tree_view_column_get_width (column);
5718
5719           if (event->keyval == (rtl ? GDK_KEY_Right : GDK_KEY_Left)
5720               || event->keyval == (rtl ? GDK_KEY_KP_Right : GDK_KEY_KP_Left))
5721             {
5722               column_width = MAX (column_width - 2, 0);
5723             }
5724           else if (event->keyval == (rtl ? GDK_KEY_Left : GDK_KEY_Right)
5725                    || event->keyval == (rtl ? GDK_KEY_KP_Left : GDK_KEY_KP_Right))
5726             {
5727               column_width = column_width + 2;
5728             }
5729
5730           gtk_tree_view_modify_column_width (tree_view, column, column_width);
5731           return TRUE;
5732         }
5733
5734       if (focus_column &&
5735           (event->state & GDK_MOD1_MASK) &&
5736           (event->keyval == GDK_KEY_Left || event->keyval == GDK_KEY_KP_Left
5737            || event->keyval == GDK_KEY_Right || event->keyval == GDK_KEY_KP_Right
5738            || event->keyval == GDK_KEY_Home || event->keyval == GDK_KEY_KP_Home
5739            || event->keyval == GDK_KEY_End || event->keyval == GDK_KEY_KP_End))
5740         {
5741           GtkTreeViewColumn *column = GTK_TREE_VIEW_COLUMN (focus_column->data);
5742
5743           if (event->keyval == (rtl ? GDK_KEY_Right : GDK_KEY_Left)
5744               || event->keyval == (rtl ? GDK_KEY_KP_Right : GDK_KEY_KP_Left))
5745             {
5746               GtkTreeViewColumn *col;
5747               col = gtk_tree_view_get_drop_column (tree_view, column, DROP_LEFT);
5748               if (col != (GtkTreeViewColumn *)0x1)
5749                 gtk_tree_view_move_column_after (tree_view, column, col);
5750               else
5751                 gtk_widget_error_bell (widget);
5752             }
5753           else if (event->keyval == (rtl ? GDK_KEY_Left : GDK_KEY_Right)
5754                    || event->keyval == (rtl ? GDK_KEY_KP_Left : GDK_KEY_KP_Right))
5755             {
5756               GtkTreeViewColumn *col;
5757               col = gtk_tree_view_get_drop_column (tree_view, column, DROP_RIGHT);
5758               if (col != (GtkTreeViewColumn *)0x1)
5759                 gtk_tree_view_move_column_after (tree_view, column, col);
5760               else
5761                 gtk_widget_error_bell (widget);
5762             }
5763           else if (event->keyval == GDK_KEY_Home || event->keyval == GDK_KEY_KP_Home)
5764             {
5765               GtkTreeViewColumn *col;
5766               col = gtk_tree_view_get_drop_column (tree_view, column, DROP_HOME);
5767               if (col != (GtkTreeViewColumn *)0x1)
5768                 gtk_tree_view_move_column_after (tree_view, column, col);
5769               else
5770                 gtk_widget_error_bell (widget);
5771             }
5772           else if (event->keyval == GDK_KEY_End || event->keyval == GDK_KEY_KP_End)
5773             {
5774               GtkTreeViewColumn *col;
5775               col = gtk_tree_view_get_drop_column (tree_view, column, DROP_END);
5776               if (col != (GtkTreeViewColumn *)0x1)
5777                 gtk_tree_view_move_column_after (tree_view, column, col);
5778               else
5779                 gtk_widget_error_bell (widget);
5780             }
5781
5782           return TRUE;
5783         }
5784     }
5785
5786   /* Chain up to the parent class.  It handles the keybindings. */
5787   if (GTK_WIDGET_CLASS (gtk_tree_view_parent_class)->key_press_event (widget, event))
5788     return TRUE;
5789
5790   if (tree_view->priv->search_entry_avoid_unhandled_binding)
5791     {
5792       tree_view->priv->search_entry_avoid_unhandled_binding = FALSE;
5793       return FALSE;
5794     }
5795
5796   /* We pass the event to the search_entry.  If its text changes, then we start
5797    * the typeahead find capabilities. */
5798   if (gtk_widget_has_focus (GTK_WIDGET (tree_view))
5799       && tree_view->priv->enable_search
5800       && !tree_view->priv->search_custom_entry_set)
5801     {
5802       GdkEvent *new_event;
5803       char *old_text;
5804       const char *new_text;
5805       gboolean retval;
5806       GdkScreen *screen;
5807       gboolean text_modified;
5808       gulong popup_menu_id;
5809
5810       gtk_tree_view_ensure_interactive_directory (tree_view);
5811
5812       /* Make a copy of the current text */
5813       old_text = g_strdup (gtk_entry_get_text (GTK_ENTRY (tree_view->priv->search_entry)));
5814       new_event = gdk_event_copy ((GdkEvent *) event);
5815       g_object_unref (((GdkEventKey *) new_event)->window);
5816       ((GdkEventKey *) new_event)->window = g_object_ref (gtk_widget_get_window (tree_view->priv->search_window));
5817       gtk_widget_realize (tree_view->priv->search_window);
5818
5819       popup_menu_id = g_signal_connect (tree_view->priv->search_entry,
5820                                         "popup-menu", G_CALLBACK (gtk_true),
5821                                         NULL);
5822
5823       /* Move the entry off screen */
5824       screen = gtk_widget_get_screen (GTK_WIDGET (tree_view));
5825       gtk_window_move (GTK_WINDOW (tree_view->priv->search_window),
5826                        gdk_screen_get_width (screen) + 1,
5827                        gdk_screen_get_height (screen) + 1);
5828       gtk_widget_show (tree_view->priv->search_window);
5829
5830       /* Send the event to the window.  If the preedit_changed signal is emitted
5831        * during this event, we will set priv->imcontext_changed  */
5832       tree_view->priv->imcontext_changed = FALSE;
5833       retval = gtk_widget_event (tree_view->priv->search_window, new_event);
5834       gdk_event_free (new_event);
5835       gtk_widget_hide (tree_view->priv->search_window);
5836
5837       g_signal_handler_disconnect (tree_view->priv->search_entry,
5838                                    popup_menu_id);
5839
5840       /* We check to make sure that the entry tried to handle the text, and that
5841        * the text has changed.
5842        */
5843       new_text = gtk_entry_get_text (GTK_ENTRY (tree_view->priv->search_entry));
5844       text_modified = strcmp (old_text, new_text) != 0;
5845       g_free (old_text);
5846       if (tree_view->priv->imcontext_changed ||    /* we're in a preedit */
5847           (retval && text_modified))               /* ...or the text was modified */
5848         {
5849           if (gtk_tree_view_real_start_interactive_search (tree_view,
5850                                                            gdk_event_get_device ((GdkEvent *) event),
5851                                                            FALSE))
5852             {
5853               gtk_widget_grab_focus (GTK_WIDGET (tree_view));
5854               return TRUE;
5855             }
5856           else
5857             {
5858               gtk_entry_set_text (GTK_ENTRY (tree_view->priv->search_entry), "");
5859               return FALSE;
5860             }
5861         }
5862     }
5863
5864   return FALSE;
5865 }
5866
5867 static gboolean
5868 gtk_tree_view_key_release (GtkWidget   *widget,
5869                            GdkEventKey *event)
5870 {
5871   GtkTreeView *tree_view = GTK_TREE_VIEW (widget);
5872
5873   if (tree_view->priv->rubber_band_status)
5874     return TRUE;
5875
5876   return GTK_WIDGET_CLASS (gtk_tree_view_parent_class)->key_release_event (widget, event);
5877 }
5878
5879 /* FIXME Is this function necessary? Can I get an enter_notify event
5880  * w/o either an expose event or a mouse motion event?
5881  */
5882 static gboolean
5883 gtk_tree_view_enter_notify (GtkWidget        *widget,
5884                             GdkEventCrossing *event)
5885 {
5886   GtkTreeView *tree_view = GTK_TREE_VIEW (widget);
5887   GtkRBTree *tree;
5888   GtkRBNode *node;
5889   gint new_y;
5890
5891   /* Sanity check it */
5892   if (event->window != tree_view->priv->bin_window)
5893     return FALSE;
5894
5895   if (tree_view->priv->tree == NULL)
5896     return FALSE;
5897
5898   if (event->mode == GDK_CROSSING_GRAB ||
5899       event->mode == GDK_CROSSING_GTK_GRAB ||
5900       event->mode == GDK_CROSSING_GTK_UNGRAB ||
5901       event->mode == GDK_CROSSING_STATE_CHANGED)
5902     return TRUE;
5903
5904   /* find the node internally */
5905   new_y = TREE_WINDOW_Y_TO_RBTREE_Y(tree_view, event->y);
5906   if (new_y < 0)
5907     new_y = 0;
5908   _gtk_rbtree_find_offset (tree_view->priv->tree, new_y, &tree, &node);
5909
5910   tree_view->priv->event_last_x = event->x;
5911   tree_view->priv->event_last_y = event->y;
5912
5913   if ((tree_view->priv->button_pressed_node == NULL) ||
5914       (tree_view->priv->button_pressed_node == node))
5915     prelight_or_select (tree_view, tree, node, event->x, event->y);
5916
5917   return TRUE;
5918 }
5919
5920 static gboolean
5921 gtk_tree_view_leave_notify (GtkWidget        *widget,
5922                             GdkEventCrossing *event)
5923 {
5924   GtkTreeView *tree_view;
5925
5926   if (event->mode == GDK_CROSSING_GRAB ||
5927       event->mode == GDK_CROSSING_GTK_GRAB ||
5928       event->mode == GDK_CROSSING_GTK_UNGRAB)
5929     return TRUE;
5930
5931   tree_view = GTK_TREE_VIEW (widget);
5932
5933   if (tree_view->priv->prelight_node)
5934     _gtk_tree_view_queue_draw_node (tree_view,
5935                                    tree_view->priv->prelight_tree,
5936                                    tree_view->priv->prelight_node,
5937                                    NULL);
5938
5939   tree_view->priv->event_last_x = -10000;
5940   tree_view->priv->event_last_y = -10000;
5941
5942   prelight_or_select (tree_view,
5943                       NULL, NULL,
5944                       -1000, -1000); /* coords not possibly over an arrow */
5945
5946   return TRUE;
5947 }
5948
5949
5950 static gint
5951 gtk_tree_view_focus_out (GtkWidget     *widget,
5952                          GdkEventFocus *event)
5953 {
5954   GtkTreeView *tree_view;
5955
5956   tree_view = GTK_TREE_VIEW (widget);
5957
5958   gtk_widget_queue_draw (widget);
5959
5960   /* destroy interactive search dialog */
5961   if (tree_view->priv->search_window)
5962     gtk_tree_view_search_dialog_hide (tree_view->priv->search_window, tree_view,
5963                                       gdk_event_get_device ((GdkEvent *) event));
5964
5965   return FALSE;
5966 }
5967
5968
5969 /* Incremental Reflow
5970  */
5971
5972 static void
5973 gtk_tree_view_node_queue_redraw (GtkTreeView *tree_view,
5974                                  GtkRBTree   *tree,
5975                                  GtkRBNode   *node)
5976 {
5977   GtkAllocation allocation;
5978   gint y;
5979
5980   y = _gtk_rbtree_node_find_offset (tree, node)
5981     - gtk_adjustment_get_value (tree_view->priv->vadjustment)
5982     + gtk_tree_view_get_effective_header_height (tree_view);
5983
5984   gtk_widget_get_allocation (GTK_WIDGET (tree_view), &allocation);
5985   gtk_widget_queue_draw_area (GTK_WIDGET (tree_view),
5986                               0, y,
5987                               allocation.width,
5988                               GTK_RBNODE_GET_HEIGHT (node));
5989 }
5990
5991 static gboolean
5992 node_is_visible (GtkTreeView *tree_view,
5993                  GtkRBTree   *tree,
5994                  GtkRBNode   *node)
5995 {
5996   int y;
5997   int height;
5998
5999   y = _gtk_rbtree_node_find_offset (tree, node);
6000   height = gtk_tree_view_get_row_height (tree_view, node);
6001
6002   if (y >= gtk_adjustment_get_value (tree_view->priv->vadjustment) &&
6003       y + height <= (gtk_adjustment_get_value (tree_view->priv->vadjustment)
6004                      + gtk_adjustment_get_page_size (tree_view->priv->vadjustment)))
6005     return TRUE;
6006
6007   return FALSE;
6008 }
6009
6010 /* Returns TRUE if it updated the size
6011  */
6012 static gboolean
6013 validate_row (GtkTreeView *tree_view,
6014               GtkRBTree   *tree,
6015               GtkRBNode   *node,
6016               GtkTreeIter *iter,
6017               GtkTreePath *path)
6018 {
6019   GtkTreeViewColumn *column;
6020   GList *list, *first_column, *last_column;
6021   gint height = 0;
6022   gint horizontal_separator;
6023   gint vertical_separator;
6024   gint depth = gtk_tree_path_get_depth (path);
6025   gboolean retval = FALSE;
6026   gboolean is_separator = FALSE;
6027   gboolean draw_vgrid_lines, draw_hgrid_lines;
6028   gint focus_pad;
6029   gint grid_line_width;
6030   gboolean wide_separators;
6031   gint separator_height;
6032   gint expander_size;
6033
6034   /* double check the row needs validating */
6035   if (! GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_INVALID) &&
6036       ! GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_COLUMN_INVALID))
6037     return FALSE;
6038
6039   is_separator = row_is_separator (tree_view, iter, NULL);
6040
6041   gtk_widget_style_get (GTK_WIDGET (tree_view),
6042                         "focus-padding", &focus_pad,
6043                         "horizontal-separator", &horizontal_separator,
6044                         "vertical-separator", &vertical_separator,
6045                         "grid-line-width", &grid_line_width,
6046                         "wide-separators",  &wide_separators,
6047                         "separator-height", &separator_height,
6048                         NULL);
6049
6050   draw_vgrid_lines =
6051     tree_view->priv->grid_lines == GTK_TREE_VIEW_GRID_LINES_VERTICAL
6052     || tree_view->priv->grid_lines == GTK_TREE_VIEW_GRID_LINES_BOTH;
6053   draw_hgrid_lines =
6054     tree_view->priv->grid_lines == GTK_TREE_VIEW_GRID_LINES_HORIZONTAL
6055     || tree_view->priv->grid_lines == GTK_TREE_VIEW_GRID_LINES_BOTH;
6056   expander_size = gtk_tree_view_get_expander_size (tree_view);
6057
6058   for (last_column = g_list_last (tree_view->priv->columns);
6059        last_column &&
6060        !(gtk_tree_view_column_get_visible (GTK_TREE_VIEW_COLUMN (last_column->data)));
6061        last_column = last_column->prev)
6062     ;
6063
6064   for (first_column = g_list_first (tree_view->priv->columns);
6065        first_column &&
6066        !(gtk_tree_view_column_get_visible (GTK_TREE_VIEW_COLUMN (first_column->data)));
6067        first_column = first_column->next)
6068     ;
6069
6070   for (list = tree_view->priv->columns; list; list = list->next)
6071     {
6072       gint padding = 0;
6073       gint original_width;
6074       gint new_width;
6075       gint row_height;
6076
6077       column = list->data;
6078
6079       if (!gtk_tree_view_column_get_visible (column))
6080         continue;
6081
6082       if (GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_COLUMN_INVALID) &&
6083           !_gtk_tree_view_column_cell_get_dirty (column))
6084         continue;
6085
6086       original_width = _gtk_tree_view_column_get_requested_width (column);
6087
6088       gtk_tree_view_column_cell_set_cell_data (column, tree_view->priv->model, iter,
6089                                                GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_PARENT),
6090                                                node->children?TRUE:FALSE);
6091       gtk_tree_view_column_cell_get_size (column,
6092                                           NULL, NULL, NULL,
6093                                           NULL, &row_height);
6094
6095       if (!is_separator)
6096         {
6097           row_height += vertical_separator;
6098           height = MAX (height, row_height);
6099           height = MAX (height, expander_size);
6100         }
6101       else
6102         {
6103           if (wide_separators)
6104             height = separator_height + 2 * focus_pad;
6105           else
6106             height = 2 + 2 * focus_pad;
6107         }
6108
6109       if (gtk_tree_view_is_expander_column (tree_view, column))
6110         {
6111           padding += horizontal_separator + (depth - 1) * tree_view->priv->level_indentation;
6112
6113           if (gtk_tree_view_draw_expanders (tree_view))
6114             padding += depth * expander_size;
6115         }
6116       else
6117         padding += horizontal_separator;
6118
6119       if (draw_vgrid_lines)
6120         {
6121           if (list->data == first_column || list->data == last_column)
6122             padding += grid_line_width / 2.0;
6123           else
6124             padding += grid_line_width;
6125         }
6126
6127       /* Update the padding for the column */
6128       _gtk_tree_view_column_push_padding (column, padding);
6129       new_width = _gtk_tree_view_column_get_requested_width (column);
6130
6131       if (new_width > original_width)
6132         retval = TRUE;
6133     }
6134
6135   if (draw_hgrid_lines)
6136     height += grid_line_width;
6137
6138   if (height != GTK_RBNODE_GET_HEIGHT (node))
6139     {
6140       retval = TRUE;
6141       _gtk_rbtree_node_set_height (tree, node, height);
6142     }
6143   _gtk_rbtree_node_mark_valid (tree, node);
6144
6145   return retval;
6146 }
6147
6148
6149 static void
6150 validate_visible_area (GtkTreeView *tree_view)
6151 {
6152   GtkAllocation allocation;
6153   GtkTreePath *path = NULL;
6154   GtkTreePath *above_path = NULL;
6155   GtkTreeIter iter;
6156   GtkRBTree *tree = NULL;
6157   GtkRBNode *node = NULL;
6158   gboolean need_redraw = FALSE;
6159   gboolean size_changed = FALSE;
6160   gint total_height;
6161   gint area_above = 0;
6162   gint area_below = 0;
6163
6164   if (tree_view->priv->tree == NULL)
6165     return;
6166
6167   if (! GTK_RBNODE_FLAG_SET (tree_view->priv->tree->root, GTK_RBNODE_DESCENDANTS_INVALID) &&
6168       tree_view->priv->scroll_to_path == NULL)
6169     return;
6170
6171   gtk_widget_get_allocation (GTK_WIDGET (tree_view), &allocation);
6172   total_height = allocation.height - gtk_tree_view_get_effective_header_height (tree_view);
6173
6174   if (total_height == 0)
6175     return;
6176
6177   /* First, we check to see if we need to scroll anywhere
6178    */
6179   if (tree_view->priv->scroll_to_path)
6180     {
6181       path = gtk_tree_row_reference_get_path (tree_view->priv->scroll_to_path);
6182       if (path && !_gtk_tree_view_find_node (tree_view, path, &tree, &node))
6183         {
6184           /* we are going to scroll, and will update dy */
6185           gtk_tree_model_get_iter (tree_view->priv->model, &iter, path);
6186           if (GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_INVALID) ||
6187               GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_COLUMN_INVALID))
6188             {
6189               _gtk_tree_view_queue_draw_node (tree_view, tree, node, NULL);
6190               if (validate_row (tree_view, tree, node, &iter, path))
6191                 size_changed = TRUE;
6192             }
6193
6194           if (tree_view->priv->scroll_to_use_align)
6195             {
6196               gint height = gtk_tree_view_get_row_height (tree_view, node);
6197               area_above = (total_height - height) *
6198                 tree_view->priv->scroll_to_row_align;
6199               area_below = total_height - area_above - height;
6200               area_above = MAX (area_above, 0);
6201               area_below = MAX (area_below, 0);
6202             }
6203           else
6204             {
6205               /* two cases:
6206                * 1) row not visible
6207                * 2) row visible
6208                */
6209               gint dy;
6210               gint height = gtk_tree_view_get_row_height (tree_view, node);
6211
6212               dy = _gtk_rbtree_node_find_offset (tree, node);
6213
6214               if (dy >= gtk_adjustment_get_value (tree_view->priv->vadjustment) &&
6215                   dy + height <= (gtk_adjustment_get_value (tree_view->priv->vadjustment)
6216                                   + gtk_adjustment_get_page_size (tree_view->priv->vadjustment)))
6217                 {
6218                   /* row visible: keep the row at the same position */
6219                   area_above = dy - gtk_adjustment_get_value (tree_view->priv->vadjustment);
6220                   area_below = (gtk_adjustment_get_value (tree_view->priv->vadjustment) +
6221                                 gtk_adjustment_get_page_size (tree_view->priv->vadjustment))
6222                                - dy - height;
6223                 }
6224               else
6225                 {
6226                   /* row not visible */
6227                   if (dy >= 0
6228                       && dy + height <= gtk_adjustment_get_page_size (tree_view->priv->vadjustment))
6229                     {
6230                       /* row at the beginning -- fixed */
6231                       area_above = dy;
6232                       area_below = gtk_adjustment_get_page_size (tree_view->priv->vadjustment)
6233                                    - area_above - height;
6234                     }
6235                   else if (dy >= (gtk_adjustment_get_upper (tree_view->priv->vadjustment) -
6236                                   gtk_adjustment_get_page_size (tree_view->priv->vadjustment)))
6237                     {
6238                       /* row at the end -- fixed */
6239                       area_above = dy - (gtk_adjustment_get_upper (tree_view->priv->vadjustment) -
6240                                    gtk_adjustment_get_page_size (tree_view->priv->vadjustment));
6241                       area_below = gtk_adjustment_get_page_size (tree_view->priv->vadjustment) -
6242                                    area_above - height;
6243
6244                       if (area_below < 0)
6245                         {
6246                           area_above = gtk_adjustment_get_page_size (tree_view->priv->vadjustment) - height;
6247                           area_below = 0;
6248                         }
6249                     }
6250                   else
6251                     {
6252                       /* row somewhere in the middle, bring it to the top
6253                        * of the view
6254                        */
6255                       area_above = 0;
6256                       area_below = total_height - height;
6257                     }
6258                 }
6259             }
6260         }
6261       else
6262         /* the scroll to isn't valid; ignore it.
6263          */
6264         {
6265           if (tree_view->priv->scroll_to_path && !path)
6266             {
6267               gtk_tree_row_reference_free (tree_view->priv->scroll_to_path);
6268               tree_view->priv->scroll_to_path = NULL;
6269             }
6270           if (path)
6271             gtk_tree_path_free (path);
6272           path = NULL;
6273         }
6274     }
6275
6276   /* We didn't have a scroll_to set, so we just handle things normally
6277    */
6278   if (path == NULL)
6279     {
6280       gint offset;
6281
6282       offset = _gtk_rbtree_find_offset (tree_view->priv->tree,
6283                                         TREE_WINDOW_Y_TO_RBTREE_Y (tree_view, 0),
6284                                         &tree, &node);
6285       if (node == NULL)
6286         {
6287           /* In this case, nothing has been validated */
6288           path = gtk_tree_path_new_first ();
6289           _gtk_tree_view_find_node (tree_view, path, &tree, &node);
6290         }
6291       else
6292         {
6293           path = _gtk_tree_path_new_from_rbtree (tree, node);
6294           total_height += offset;
6295         }
6296
6297       gtk_tree_model_get_iter (tree_view->priv->model, &iter, path);
6298
6299       if (GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_INVALID) ||
6300           GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_COLUMN_INVALID))
6301         {
6302           _gtk_tree_view_queue_draw_node (tree_view, tree, node, NULL);
6303           if (validate_row (tree_view, tree, node, &iter, path))
6304             size_changed = TRUE;
6305         }
6306       area_above = 0;
6307       area_below = total_height - gtk_tree_view_get_row_height (tree_view, node);
6308     }
6309
6310   above_path = gtk_tree_path_copy (path);
6311
6312   /* if we do not validate any row above the new top_row, we will make sure
6313    * that the row immediately above top_row has been validated. (if we do not
6314    * do this, _gtk_rbtree_find_offset will find the row above top_row, because
6315    * when invalidated that row's height will be zero. and this will mess up
6316    * scrolling).
6317    */
6318   if (area_above == 0)
6319     {
6320       GtkRBTree *tmptree;
6321       GtkRBNode *tmpnode;
6322
6323       _gtk_tree_view_find_node (tree_view, above_path, &tmptree, &tmpnode);
6324       _gtk_rbtree_prev_full (tmptree, tmpnode, &tmptree, &tmpnode);
6325
6326       if (tmpnode)
6327         {
6328           GtkTreePath *tmppath;
6329           GtkTreeIter tmpiter;
6330
6331           tmppath = _gtk_tree_path_new_from_rbtree (tmptree, tmpnode);
6332           gtk_tree_model_get_iter (tree_view->priv->model, &tmpiter, tmppath);
6333
6334           if (GTK_RBNODE_FLAG_SET (tmpnode, GTK_RBNODE_INVALID) ||
6335               GTK_RBNODE_FLAG_SET (tmpnode, GTK_RBNODE_COLUMN_INVALID))
6336             {
6337               _gtk_tree_view_queue_draw_node (tree_view, tmptree, tmpnode, NULL);
6338               if (validate_row (tree_view, tmptree, tmpnode, &tmpiter, tmppath))
6339                 size_changed = TRUE;
6340             }
6341
6342           gtk_tree_path_free (tmppath);
6343         }
6344     }
6345
6346   /* Now, we walk forwards and backwards, measuring rows. Unfortunately,
6347    * backwards is much slower then forward, as there is no iter_prev function.
6348    * We go forwards first in case we run out of tree.  Then we go backwards to
6349    * fill out the top.
6350    */
6351   while (node && area_below > 0)
6352     {
6353       if (node->children)
6354         {
6355           GtkTreeIter parent = iter;
6356           gboolean has_child;
6357
6358           tree = node->children;
6359           node = _gtk_rbtree_first (tree);
6360
6361           has_child = gtk_tree_model_iter_children (tree_view->priv->model,
6362                                                     &iter,
6363                                                     &parent);
6364           TREE_VIEW_INTERNAL_ASSERT_VOID (has_child);
6365           gtk_tree_path_down (path);
6366         }
6367       else
6368         {
6369           gboolean done = FALSE;
6370           do
6371             {
6372               node = _gtk_rbtree_next (tree, node);
6373               if (node != NULL)
6374                 {
6375                   gboolean has_next = gtk_tree_model_iter_next (tree_view->priv->model, &iter);
6376                   done = TRUE;
6377                   gtk_tree_path_next (path);
6378
6379                   /* Sanity Check! */
6380                   TREE_VIEW_INTERNAL_ASSERT_VOID (has_next);
6381                 }
6382               else
6383                 {
6384                   GtkTreeIter parent_iter = iter;
6385                   gboolean has_parent;
6386
6387                   node = tree->parent_node;
6388                   tree = tree->parent_tree;
6389                   if (tree == NULL)
6390                     break;
6391                   has_parent = gtk_tree_model_iter_parent (tree_view->priv->model,
6392                                                            &iter,
6393                                                            &parent_iter);
6394                   gtk_tree_path_up (path);
6395
6396                   /* Sanity check */
6397                   TREE_VIEW_INTERNAL_ASSERT_VOID (has_parent);
6398                 }
6399             }
6400           while (!done);
6401         }
6402
6403       if (!node)
6404         break;
6405
6406       if (GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_INVALID) ||
6407           GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_COLUMN_INVALID))
6408         {
6409           _gtk_tree_view_queue_draw_node (tree_view, tree, node, NULL);
6410           if (validate_row (tree_view, tree, node, &iter, path))
6411               size_changed = TRUE;
6412         }
6413
6414       area_below -= gtk_tree_view_get_row_height (tree_view, node);
6415     }
6416   gtk_tree_path_free (path);
6417
6418   /* If we ran out of tree, and have extra area_below left, we need to add it
6419    * to area_above */
6420   if (area_below > 0)
6421     area_above += area_below;
6422
6423   _gtk_tree_view_find_node (tree_view, above_path, &tree, &node);
6424
6425   /* We walk backwards */
6426   while (area_above > 0)
6427     {
6428       _gtk_rbtree_prev_full (tree, node, &tree, &node);
6429
6430       /* Always find the new path in the tree.  We cannot just assume
6431        * a gtk_tree_path_prev() is enough here, as there might be children
6432        * in between this node and the previous sibling node.  If this
6433        * appears to be a performance hotspot in profiles, we can look into
6434        * intrigate logic for keeping path, node and iter in sync like
6435        * we do for forward walks.  (Which will be hard because of the lacking
6436        * iter_prev).
6437        */
6438
6439       if (node == NULL)
6440         break;
6441
6442       gtk_tree_path_free (above_path);
6443       above_path = _gtk_tree_path_new_from_rbtree (tree, node);
6444
6445       gtk_tree_model_get_iter (tree_view->priv->model, &iter, above_path);
6446
6447       if (GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_INVALID) ||
6448           GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_COLUMN_INVALID))
6449         {
6450           _gtk_tree_view_queue_draw_node (tree_view, tree, node, NULL);
6451           if (validate_row (tree_view, tree, node, &iter, above_path))
6452             size_changed = TRUE;
6453         }
6454       area_above -= gtk_tree_view_get_row_height (tree_view, node);
6455     }
6456
6457   /* if we scrolled to a path, we need to set the dy here,
6458    * and sync the top row accordingly
6459    */
6460   if (tree_view->priv->scroll_to_path)
6461     {
6462       gtk_tree_view_set_top_row (tree_view, above_path, -area_above);
6463       gtk_tree_view_top_row_to_dy (tree_view);
6464
6465       need_redraw = TRUE;
6466     }
6467   else if (tree_view->priv->height <= gtk_adjustment_get_page_size (tree_view->priv->vadjustment))
6468     {
6469       /* when we are not scrolling, we should never set dy to something
6470        * else than zero. we update top_row to be in sync with dy = 0.
6471        */
6472       gtk_adjustment_set_value (GTK_ADJUSTMENT (tree_view->priv->vadjustment), 0);
6473       gtk_tree_view_dy_to_top_row (tree_view);
6474     }
6475   else if (gtk_adjustment_get_value (tree_view->priv->vadjustment) + gtk_adjustment_get_page_size (tree_view->priv->vadjustment) > tree_view->priv->height)
6476     {
6477       gtk_adjustment_set_value (GTK_ADJUSTMENT (tree_view->priv->vadjustment), tree_view->priv->height - gtk_adjustment_get_page_size (tree_view->priv->vadjustment));
6478       gtk_tree_view_dy_to_top_row (tree_view);
6479     }
6480   else
6481     gtk_tree_view_top_row_to_dy (tree_view);
6482
6483   /* update width/height and queue a resize */
6484   if (size_changed)
6485     {
6486       GtkRequisition requisition;
6487
6488       /* We temporarily guess a size, under the assumption that it will be the
6489        * same when we get our next size_allocate.  If we don't do this, we'll be
6490        * in an inconsistent state if we call top_row_to_dy. */
6491
6492       gtk_widget_get_preferred_size (GTK_WIDGET (tree_view),
6493                                      &requisition, NULL);
6494       gtk_adjustment_set_upper (tree_view->priv->hadjustment,
6495                                 MAX (gtk_adjustment_get_upper (tree_view->priv->hadjustment), requisition.width));
6496       gtk_adjustment_set_upper (tree_view->priv->vadjustment,
6497                                 MAX (gtk_adjustment_get_upper (tree_view->priv->vadjustment), requisition.height));
6498       gtk_widget_queue_resize (GTK_WIDGET (tree_view));
6499     }
6500
6501   if (tree_view->priv->scroll_to_path)
6502     {
6503       gtk_tree_row_reference_free (tree_view->priv->scroll_to_path);
6504       tree_view->priv->scroll_to_path = NULL;
6505     }
6506
6507   if (above_path)
6508     gtk_tree_path_free (above_path);
6509
6510   if (tree_view->priv->scroll_to_column)
6511     {
6512       tree_view->priv->scroll_to_column = NULL;
6513     }
6514   if (need_redraw)
6515     gtk_widget_queue_draw (GTK_WIDGET (tree_view));
6516 }
6517
6518 static void
6519 initialize_fixed_height_mode (GtkTreeView *tree_view)
6520 {
6521   if (!tree_view->priv->tree)
6522     return;
6523
6524   if (tree_view->priv->fixed_height < 0)
6525     {
6526       GtkTreeIter iter;
6527       GtkTreePath *path;
6528
6529       GtkRBTree *tree = NULL;
6530       GtkRBNode *node = NULL;
6531
6532       tree = tree_view->priv->tree;
6533       node = tree->root;
6534
6535       path = _gtk_tree_path_new_from_rbtree (tree, node);
6536       gtk_tree_model_get_iter (tree_view->priv->model, &iter, path);
6537
6538       validate_row (tree_view, tree, node, &iter, path);
6539
6540       gtk_tree_path_free (path);
6541
6542       tree_view->priv->fixed_height = gtk_tree_view_get_row_height (tree_view, node);
6543     }
6544
6545    _gtk_rbtree_set_fixed_height (tree_view->priv->tree,
6546                                  tree_view->priv->fixed_height, TRUE);
6547 }
6548
6549 /* Our strategy for finding nodes to validate is a little convoluted.  We find
6550  * the left-most uninvalidated node.  We then try walking right, validating
6551  * nodes.  Once we find a valid node, we repeat the previous process of finding
6552  * the first invalid node.
6553  */
6554
6555 static gboolean
6556 do_validate_rows (GtkTreeView *tree_view, gboolean queue_resize)
6557 {
6558   static gboolean prevent_recursion_hack = FALSE;
6559
6560   GtkRBTree *tree = NULL;
6561   GtkRBNode *node = NULL;
6562   gboolean validated_area = FALSE;
6563   gint retval = TRUE;
6564   GtkTreePath *path = NULL;
6565   GtkTreeIter iter;
6566   GTimer *timer;
6567   gint i = 0;
6568
6569   gint y = -1;
6570   gint prev_height = -1;
6571   gboolean fixed_height = TRUE;
6572
6573   g_assert (tree_view);
6574
6575   /* prevent infinite recursion via get_preferred_width() */
6576   if (prevent_recursion_hack)
6577     return FALSE;
6578
6579   if (tree_view->priv->tree == NULL)
6580       return FALSE;
6581
6582   if (tree_view->priv->fixed_height_mode)
6583     {
6584       if (tree_view->priv->fixed_height < 0)
6585         initialize_fixed_height_mode (tree_view);
6586
6587       return FALSE;
6588     }
6589
6590   timer = g_timer_new ();
6591   g_timer_start (timer);
6592
6593   do
6594     {
6595       gboolean changed = FALSE;
6596
6597       if (! GTK_RBNODE_FLAG_SET (tree_view->priv->tree->root, GTK_RBNODE_DESCENDANTS_INVALID))
6598         {
6599           retval = FALSE;
6600           goto done;
6601         }
6602
6603       if (path != NULL)
6604         {
6605           node = _gtk_rbtree_next (tree, node);
6606           if (node != NULL)
6607             {
6608               TREE_VIEW_INTERNAL_ASSERT (gtk_tree_model_iter_next (tree_view->priv->model, &iter), FALSE);
6609               gtk_tree_path_next (path);
6610             }
6611           else
6612             {
6613               gtk_tree_path_free (path);
6614               path = NULL;
6615             }
6616         }
6617
6618       if (path == NULL)
6619         {
6620           tree = tree_view->priv->tree;
6621           node = tree_view->priv->tree->root;
6622
6623           g_assert (GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_DESCENDANTS_INVALID));
6624
6625           do
6626             {
6627               if (!_gtk_rbtree_is_nil (node->left) &&
6628                   GTK_RBNODE_FLAG_SET (node->left, GTK_RBNODE_DESCENDANTS_INVALID))
6629                 {
6630                   node = node->left;
6631                 }
6632               else if (!_gtk_rbtree_is_nil (node->right) &&
6633                        GTK_RBNODE_FLAG_SET (node->right, GTK_RBNODE_DESCENDANTS_INVALID))
6634                 {
6635                   node = node->right;
6636                 }
6637               else if (GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_INVALID) ||
6638                        GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_COLUMN_INVALID))
6639                 {
6640                   break;
6641                 }
6642               else if (node->children != NULL)
6643                 {
6644                   tree = node->children;
6645                   node = tree->root;
6646                 }
6647               else
6648                 /* RBTree corruption!  All bad */
6649                 g_assert_not_reached ();
6650             }
6651           while (TRUE);
6652           path = _gtk_tree_path_new_from_rbtree (tree, node);
6653           gtk_tree_model_get_iter (tree_view->priv->model, &iter, path);
6654         }
6655
6656       changed = validate_row (tree_view, tree, node, &iter, path);
6657       validated_area = changed || validated_area;
6658
6659       if (changed)
6660         {
6661           gint offset = gtk_tree_view_get_row_y_offset (tree_view, tree, node);
6662
6663           if (y == -1 || y > offset)
6664             y = offset;
6665         }
6666
6667       if (!tree_view->priv->fixed_height_check)
6668         {
6669           gint height;
6670
6671           height = gtk_tree_view_get_row_height (tree_view, node);
6672           if (prev_height < 0)
6673             prev_height = height;
6674           else if (prev_height != height)
6675             fixed_height = FALSE;
6676         }
6677
6678       i++;
6679     }
6680   while (g_timer_elapsed (timer, NULL) < GTK_TREE_VIEW_TIME_MS_PER_IDLE / 1000.);
6681
6682   if (!tree_view->priv->fixed_height_check)
6683    {
6684      if (fixed_height)
6685        _gtk_rbtree_set_fixed_height (tree_view->priv->tree, prev_height, FALSE);
6686
6687      tree_view->priv->fixed_height_check = 1;
6688    }
6689
6690  done:
6691   if (validated_area)
6692     {
6693       GtkRequisition requisition;
6694
6695       /* We temporarily guess a size, under the assumption that it will be the
6696        * same when we get our next size_allocate.  If we don't do this, we'll be
6697        * in an inconsistent state when we call top_row_to_dy. */
6698
6699       /* FIXME: This is called from size_request, for some reason it is not infinitely
6700        * recursing, we cannot call gtk_widget_get_preferred_size() here because that's
6701        * not allowed (from inside ->get_preferred_width/height() implementations, one
6702        * should call the vfuncs directly). However what is desired here is the full
6703        * size including any margins and limited by any alignment (i.e. after
6704        * GtkWidget:adjust_size_request() is called).
6705        *
6706        * Currently bypassing this but the real solution is to not update the scroll adjustments
6707        * untill we've recieved an allocation (never update scroll adjustments from size-requests).
6708        */
6709       prevent_recursion_hack = TRUE;
6710       gtk_tree_view_get_preferred_width (GTK_WIDGET (tree_view), &requisition.width, NULL);
6711       gtk_tree_view_get_preferred_height (GTK_WIDGET (tree_view), &requisition.height, NULL);
6712       prevent_recursion_hack = FALSE;
6713
6714       /* If rows above the current position have changed height, this has
6715        * affected the current view and thus needs a redraw.
6716        */
6717       if (y != -1 && y < gtk_adjustment_get_value (tree_view->priv->vadjustment))
6718         gtk_widget_queue_draw (GTK_WIDGET (tree_view));
6719
6720       gtk_adjustment_set_upper (tree_view->priv->hadjustment,
6721                                 MAX (gtk_adjustment_get_upper (tree_view->priv->hadjustment), requisition.width));
6722       gtk_adjustment_set_upper (tree_view->priv->vadjustment,
6723                                 MAX (gtk_adjustment_get_upper (tree_view->priv->vadjustment), requisition.height));
6724
6725       if (queue_resize)
6726         gtk_widget_queue_resize_no_redraw (GTK_WIDGET (tree_view));
6727     }
6728
6729   if (path) gtk_tree_path_free (path);
6730   g_timer_destroy (timer);
6731
6732   return retval;
6733 }
6734
6735 static gboolean
6736 validate_rows (GtkTreeView *tree_view)
6737 {
6738   gboolean retval;
6739
6740   retval = do_validate_rows (tree_view, TRUE);
6741
6742   if (! retval && tree_view->priv->validate_rows_timer)
6743     {
6744       g_source_remove (tree_view->priv->validate_rows_timer);
6745       tree_view->priv->validate_rows_timer = 0;
6746     }
6747
6748   return retval;
6749 }
6750
6751 static gboolean
6752 validate_rows_handler (GtkTreeView *tree_view)
6753 {
6754   gboolean retval;
6755
6756   retval = do_validate_rows (tree_view, TRUE);
6757   if (! retval && tree_view->priv->validate_rows_timer)
6758     {
6759       g_source_remove (tree_view->priv->validate_rows_timer);
6760       tree_view->priv->validate_rows_timer = 0;
6761     }
6762
6763   return retval;
6764 }
6765
6766 static gboolean
6767 do_presize_handler (GtkTreeView *tree_view)
6768 {
6769   if (tree_view->priv->mark_rows_col_dirty)
6770     {
6771       if (tree_view->priv->tree)
6772         _gtk_rbtree_column_invalid (tree_view->priv->tree);
6773       tree_view->priv->mark_rows_col_dirty = FALSE;
6774     }
6775   validate_visible_area (tree_view);
6776   tree_view->priv->presize_handler_timer = 0;
6777
6778   if (tree_view->priv->fixed_height_mode)
6779     {
6780       GtkRequisition requisition;
6781
6782       gtk_widget_get_preferred_size (GTK_WIDGET (tree_view),
6783                                      &requisition, NULL);
6784
6785       gtk_adjustment_set_upper (tree_view->priv->hadjustment,
6786                                 MAX (gtk_adjustment_get_upper (tree_view->priv->hadjustment), requisition.width));
6787       gtk_adjustment_set_upper (tree_view->priv->vadjustment,
6788                                 MAX (gtk_adjustment_get_upper (tree_view->priv->vadjustment), requisition.height));
6789       gtk_widget_queue_resize (GTK_WIDGET (tree_view));
6790     }
6791
6792   return FALSE;
6793 }
6794
6795 static gboolean
6796 presize_handler_callback (gpointer data)
6797 {
6798   do_presize_handler (GTK_TREE_VIEW (data));
6799
6800   return FALSE;
6801 }
6802
6803 static void
6804 install_presize_handler (GtkTreeView *tree_view)
6805 {
6806   if (! gtk_widget_get_realized (GTK_WIDGET (tree_view)))
6807     return;
6808
6809   if (! tree_view->priv->presize_handler_timer)
6810     {
6811       tree_view->priv->presize_handler_timer =
6812         gdk_threads_add_idle_full (GTK_PRIORITY_RESIZE - 2, presize_handler_callback, tree_view, NULL);
6813     }
6814   if (! tree_view->priv->validate_rows_timer)
6815     {
6816       tree_view->priv->validate_rows_timer =
6817         gdk_threads_add_idle_full (GTK_TREE_VIEW_PRIORITY_VALIDATE, (GSourceFunc) validate_rows_handler, tree_view, NULL);
6818     }
6819 }
6820
6821 static gboolean
6822 scroll_sync_handler (GtkTreeView *tree_view)
6823 {
6824   if (tree_view->priv->height <= gtk_adjustment_get_page_size (tree_view->priv->vadjustment))
6825     gtk_adjustment_set_value (GTK_ADJUSTMENT (tree_view->priv->vadjustment), 0);
6826   else if (gtk_tree_row_reference_valid (tree_view->priv->top_row))
6827     gtk_tree_view_top_row_to_dy (tree_view);
6828   else
6829     gtk_tree_view_dy_to_top_row (tree_view);
6830
6831   tree_view->priv->scroll_sync_timer = 0;
6832
6833   return FALSE;
6834 }
6835
6836 static void
6837 install_scroll_sync_handler (GtkTreeView *tree_view)
6838 {
6839   if (!gtk_widget_get_realized (GTK_WIDGET (tree_view)))
6840     return;
6841
6842   if (!tree_view->priv->scroll_sync_timer)
6843     {
6844       tree_view->priv->scroll_sync_timer =
6845         gdk_threads_add_idle_full (GTK_TREE_VIEW_PRIORITY_SCROLL_SYNC, (GSourceFunc) scroll_sync_handler, tree_view, NULL);
6846     }
6847 }
6848
6849 static void
6850 gtk_tree_view_set_top_row (GtkTreeView *tree_view,
6851                            GtkTreePath *path,
6852                            gint         offset)
6853 {
6854   gtk_tree_row_reference_free (tree_view->priv->top_row);
6855
6856   if (!path)
6857     {
6858       tree_view->priv->top_row = NULL;
6859       tree_view->priv->top_row_dy = 0;
6860     }
6861   else
6862     {
6863       tree_view->priv->top_row = gtk_tree_row_reference_new_proxy (G_OBJECT (tree_view), tree_view->priv->model, path);
6864       tree_view->priv->top_row_dy = offset;
6865     }
6866 }
6867
6868 /* Always call this iff dy is in the visible range.  If the tree is empty, then
6869  * it's set to be NULL, and top_row_dy is 0;
6870  */
6871 static void
6872 gtk_tree_view_dy_to_top_row (GtkTreeView *tree_view)
6873 {
6874   gint offset;
6875   GtkTreePath *path;
6876   GtkRBTree *tree;
6877   GtkRBNode *node;
6878
6879   if (tree_view->priv->tree == NULL)
6880     {
6881       gtk_tree_view_set_top_row (tree_view, NULL, 0);
6882     }
6883   else
6884     {
6885       offset = _gtk_rbtree_find_offset (tree_view->priv->tree,
6886                                         tree_view->priv->dy,
6887                                         &tree, &node);
6888
6889       if (tree == NULL)
6890         {
6891           gtk_tree_view_set_top_row (tree_view, NULL, 0);
6892         }
6893       else
6894         {
6895           path = _gtk_tree_path_new_from_rbtree (tree, node);
6896           gtk_tree_view_set_top_row (tree_view, path, offset);
6897           gtk_tree_path_free (path);
6898         }
6899     }
6900 }
6901
6902 static void
6903 gtk_tree_view_top_row_to_dy (GtkTreeView *tree_view)
6904 {
6905   GtkTreePath *path;
6906   GtkRBTree *tree;
6907   GtkRBNode *node;
6908   int new_dy;
6909
6910   /* Avoid recursive calls */
6911   if (tree_view->priv->in_top_row_to_dy)
6912     return;
6913
6914   if (tree_view->priv->top_row)
6915     path = gtk_tree_row_reference_get_path (tree_view->priv->top_row);
6916   else
6917     path = NULL;
6918
6919   if (!path)
6920     tree = NULL;
6921   else
6922     _gtk_tree_view_find_node (tree_view, path, &tree, &node);
6923
6924   if (path)
6925     gtk_tree_path_free (path);
6926
6927   if (tree == NULL)
6928     {
6929       /* keep dy and set new toprow */
6930       gtk_tree_row_reference_free (tree_view->priv->top_row);
6931       tree_view->priv->top_row = NULL;
6932       tree_view->priv->top_row_dy = 0;
6933       /* DO NOT install the idle handler */
6934       gtk_tree_view_dy_to_top_row (tree_view);
6935       return;
6936     }
6937
6938   if (gtk_tree_view_get_row_height (tree_view, node)
6939       < tree_view->priv->top_row_dy)
6940     {
6941       /* new top row -- do NOT install the idle handler */
6942       gtk_tree_view_dy_to_top_row (tree_view);
6943       return;
6944     }
6945
6946   new_dy = _gtk_rbtree_node_find_offset (tree, node);
6947   new_dy += tree_view->priv->top_row_dy;
6948
6949   if (new_dy + gtk_adjustment_get_page_size (tree_view->priv->vadjustment) > tree_view->priv->height)
6950     new_dy = tree_view->priv->height - gtk_adjustment_get_page_size (tree_view->priv->vadjustment);
6951
6952   new_dy = MAX (0, new_dy);
6953
6954   tree_view->priv->in_top_row_to_dy = TRUE;
6955   gtk_adjustment_set_value (tree_view->priv->vadjustment, (gdouble)new_dy);
6956   tree_view->priv->in_top_row_to_dy = FALSE;
6957 }
6958
6959
6960 void
6961 _gtk_tree_view_install_mark_rows_col_dirty (GtkTreeView *tree_view,
6962                                             gboolean     install_handler)
6963 {
6964   tree_view->priv->mark_rows_col_dirty = TRUE;
6965
6966   if (install_handler)
6967     install_presize_handler (tree_view);
6968 }
6969
6970 /*
6971  * This function works synchronously (due to the while (validate_rows...)
6972  * loop).
6973  *
6974  * There was a check for column_type != GTK_TREE_VIEW_COLUMN_AUTOSIZE
6975  * here. You now need to check that yourself.
6976  */
6977 void
6978 _gtk_tree_view_column_autosize (GtkTreeView *tree_view,
6979                                 GtkTreeViewColumn *column)
6980 {
6981   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
6982   g_return_if_fail (GTK_IS_TREE_VIEW_COLUMN (column));
6983
6984   _gtk_tree_view_column_cell_set_dirty (column, FALSE);
6985
6986   do_presize_handler (tree_view);
6987   while (validate_rows (tree_view));
6988
6989   gtk_widget_queue_resize (GTK_WIDGET (tree_view));
6990 }
6991
6992 /* Drag-and-drop */
6993
6994 static void
6995 set_source_row (GdkDragContext *context,
6996                 GtkTreeModel   *model,
6997                 GtkTreePath    *source_row)
6998 {
6999   g_object_set_data_full (G_OBJECT (context),
7000                           I_("gtk-tree-view-source-row"),
7001                           source_row ? gtk_tree_row_reference_new (model, source_row) : NULL,
7002                           (GDestroyNotify) (source_row ? gtk_tree_row_reference_free : NULL));
7003 }
7004
7005 static GtkTreePath*
7006 get_source_row (GdkDragContext *context)
7007 {
7008   GtkTreeRowReference *ref =
7009     g_object_get_data (G_OBJECT (context), "gtk-tree-view-source-row");
7010
7011   if (ref)
7012     return gtk_tree_row_reference_get_path (ref);
7013   else
7014     return NULL;
7015 }
7016
7017 typedef struct
7018 {
7019   GtkTreeRowReference *dest_row;
7020   guint                path_down_mode   : 1;
7021   guint                empty_view_drop  : 1;
7022   guint                drop_append_mode : 1;
7023 }
7024 DestRow;
7025
7026 static void
7027 dest_row_free (gpointer data)
7028 {
7029   DestRow *dr = (DestRow *)data;
7030
7031   gtk_tree_row_reference_free (dr->dest_row);
7032   g_slice_free (DestRow, dr);
7033 }
7034
7035 static void
7036 set_dest_row (GdkDragContext *context,
7037               GtkTreeModel   *model,
7038               GtkTreePath    *dest_row,
7039               gboolean        path_down_mode,
7040               gboolean        empty_view_drop,
7041               gboolean        drop_append_mode)
7042 {
7043   DestRow *dr;
7044
7045   if (!dest_row)
7046     {
7047       g_object_set_data_full (G_OBJECT (context), I_("gtk-tree-view-dest-row"),
7048                               NULL, NULL);
7049       return;
7050     }
7051
7052   dr = g_slice_new (DestRow);
7053
7054   dr->dest_row = gtk_tree_row_reference_new (model, dest_row);
7055   dr->path_down_mode = path_down_mode != FALSE;
7056   dr->empty_view_drop = empty_view_drop != FALSE;
7057   dr->drop_append_mode = drop_append_mode != FALSE;
7058
7059   g_object_set_data_full (G_OBJECT (context), I_("gtk-tree-view-dest-row"),
7060                           dr, (GDestroyNotify) dest_row_free);
7061 }
7062
7063 static GtkTreePath*
7064 get_dest_row (GdkDragContext *context,
7065               gboolean       *path_down_mode)
7066 {
7067   DestRow *dr =
7068     g_object_get_data (G_OBJECT (context), "gtk-tree-view-dest-row");
7069
7070   if (dr)
7071     {
7072       GtkTreePath *path = NULL;
7073
7074       if (path_down_mode)
7075         *path_down_mode = dr->path_down_mode;
7076
7077       if (dr->dest_row)
7078         path = gtk_tree_row_reference_get_path (dr->dest_row);
7079       else if (dr->empty_view_drop)
7080         path = gtk_tree_path_new_from_indices (0, -1);
7081       else
7082         path = NULL;
7083
7084       if (path && dr->drop_append_mode)
7085         gtk_tree_path_next (path);
7086
7087       return path;
7088     }
7089   else
7090     return NULL;
7091 }
7092
7093 /* Get/set whether drag_motion requested the drag data and
7094  * drag_data_received should thus not actually insert the data,
7095  * since the data doesn't result from a drop.
7096  */
7097 static void
7098 set_status_pending (GdkDragContext *context,
7099                     GdkDragAction   suggested_action)
7100 {
7101   g_object_set_data (G_OBJECT (context),
7102                      I_("gtk-tree-view-status-pending"),
7103                      GINT_TO_POINTER (suggested_action));
7104 }
7105
7106 static GdkDragAction
7107 get_status_pending (GdkDragContext *context)
7108 {
7109   return GPOINTER_TO_INT (g_object_get_data (G_OBJECT (context),
7110                                              "gtk-tree-view-status-pending"));
7111 }
7112
7113 static TreeViewDragInfo*
7114 get_info (GtkTreeView *tree_view)
7115 {
7116   return g_object_get_data (G_OBJECT (tree_view), "gtk-tree-view-drag-info");
7117 }
7118
7119 static void
7120 destroy_info (TreeViewDragInfo *di)
7121 {
7122   g_slice_free (TreeViewDragInfo, di);
7123 }
7124
7125 static TreeViewDragInfo*
7126 ensure_info (GtkTreeView *tree_view)
7127 {
7128   TreeViewDragInfo *di;
7129
7130   di = get_info (tree_view);
7131
7132   if (di == NULL)
7133     {
7134       di = g_slice_new0 (TreeViewDragInfo);
7135
7136       g_object_set_data_full (G_OBJECT (tree_view),
7137                               I_("gtk-tree-view-drag-info"),
7138                               di,
7139                               (GDestroyNotify) destroy_info);
7140     }
7141
7142   return di;
7143 }
7144
7145 static void
7146 remove_info (GtkTreeView *tree_view)
7147 {
7148   g_object_set_data (G_OBJECT (tree_view), I_("gtk-tree-view-drag-info"), NULL);
7149 }
7150
7151 #if 0
7152 static gint
7153 drag_scan_timeout (gpointer data)
7154 {
7155   GtkTreeView *tree_view;
7156   gint x, y;
7157   GdkModifierType state;
7158   GtkTreePath *path = NULL;
7159   GtkTreeViewColumn *column = NULL;
7160   GdkRectangle visible_rect;
7161
7162   gdk_threads_enter ();
7163
7164   tree_view = GTK_TREE_VIEW (data);
7165
7166   gdk_window_get_device_position (tree_view->priv->bin_window,
7167                                   gdk_device_manager_get_client_pointer (
7168                                     gdk_display_get_device_manager (
7169                                       gtk_widget_get_display (GTK_WIDGET (tree_view)))),
7170                                   &x, &y, &state);
7171
7172   gtk_tree_view_get_visible_rect (tree_view, &visible_rect);
7173
7174   /* See if we are near the edge. */
7175   if ((x - visible_rect.x) < SCROLL_EDGE_SIZE ||
7176       (visible_rect.x + visible_rect.width - x) < SCROLL_EDGE_SIZE ||
7177       (y - visible_rect.y) < SCROLL_EDGE_SIZE ||
7178       (visible_rect.y + visible_rect.height - y) < SCROLL_EDGE_SIZE)
7179     {
7180       gtk_tree_view_get_path_at_pos (tree_view,
7181                                      tree_view->priv->bin_window,
7182                                      x, y,
7183                                      &path,
7184                                      &column,
7185                                      NULL,
7186                                      NULL);
7187
7188       if (path != NULL)
7189         {
7190           gtk_tree_view_scroll_to_cell (tree_view,
7191                                         path,
7192                                         column,
7193                                         TRUE,
7194                                         0.5, 0.5);
7195
7196           gtk_tree_path_free (path);
7197         }
7198     }
7199
7200   gdk_threads_leave ();
7201
7202   return TRUE;
7203 }
7204 #endif /* 0 */
7205
7206 static void
7207 add_scroll_timeout (GtkTreeView *tree_view)
7208 {
7209   if (tree_view->priv->scroll_timeout == 0)
7210     {
7211       tree_view->priv->scroll_timeout =
7212         gdk_threads_add_timeout (150, scroll_row_timeout, tree_view);
7213     }
7214 }
7215
7216 static void
7217 remove_scroll_timeout (GtkTreeView *tree_view)
7218 {
7219   if (tree_view->priv->scroll_timeout != 0)
7220     {
7221       g_source_remove (tree_view->priv->scroll_timeout);
7222       tree_view->priv->scroll_timeout = 0;
7223     }
7224 }
7225
7226 static gboolean
7227 check_model_dnd (GtkTreeModel *model,
7228                  GType         required_iface,
7229                  const gchar  *signal)
7230 {
7231   if (model == NULL || !G_TYPE_CHECK_INSTANCE_TYPE ((model), required_iface))
7232     {
7233       g_warning ("You must override the default '%s' handler "
7234                  "on GtkTreeView when using models that don't support "
7235                  "the %s interface and enabling drag-and-drop. The simplest way to do this "
7236                  "is to connect to '%s' and call "
7237                  "g_signal_stop_emission_by_name() in your signal handler to prevent "
7238                  "the default handler from running. Look at the source code "
7239                  "for the default handler in gtktreeview.c to get an idea what "
7240                  "your handler should do. (gtktreeview.c is in the GTK source "
7241                  "code.) If you're using GTK from a language other than C, "
7242                  "there may be a more natural way to override default handlers, e.g. via derivation.",
7243                  signal, g_type_name (required_iface), signal);
7244       return FALSE;
7245     }
7246   else
7247     return TRUE;
7248 }
7249
7250 static void
7251 remove_open_timeout (GtkTreeView *tree_view)
7252 {
7253   if (tree_view->priv->open_dest_timeout != 0)
7254     {
7255       g_source_remove (tree_view->priv->open_dest_timeout);
7256       tree_view->priv->open_dest_timeout = 0;
7257     }
7258 }
7259
7260
7261 static gint
7262 open_row_timeout (gpointer data)
7263 {
7264   GtkTreeView *tree_view = data;
7265   GtkTreePath *dest_path = NULL;
7266   GtkTreeViewDropPosition pos;
7267   gboolean result = FALSE;
7268
7269   gtk_tree_view_get_drag_dest_row (tree_view,
7270                                    &dest_path,
7271                                    &pos);
7272
7273   if (dest_path &&
7274       (pos == GTK_TREE_VIEW_DROP_INTO_OR_AFTER ||
7275        pos == GTK_TREE_VIEW_DROP_INTO_OR_BEFORE))
7276     {
7277       gtk_tree_view_expand_row (tree_view, dest_path, FALSE);
7278       tree_view->priv->open_dest_timeout = 0;
7279
7280       gtk_tree_path_free (dest_path);
7281     }
7282   else
7283     {
7284       if (dest_path)
7285         gtk_tree_path_free (dest_path);
7286
7287       result = TRUE;
7288     }
7289
7290   return result;
7291 }
7292
7293 static gboolean
7294 scroll_row_timeout (gpointer data)
7295 {
7296   GtkTreeView *tree_view = data;
7297
7298   gtk_tree_view_vertical_autoscroll (tree_view);
7299
7300   if (tree_view->priv->rubber_band_status == RUBBER_BAND_ACTIVE)
7301     gtk_tree_view_update_rubber_band (tree_view);
7302
7303   return TRUE;
7304 }
7305
7306 /* Returns TRUE if event should not be propagated to parent widgets */
7307 static gboolean
7308 set_destination_row (GtkTreeView    *tree_view,
7309                      GdkDragContext *context,
7310                      /* coordinates relative to the widget */
7311                      gint            x,
7312                      gint            y,
7313                      GdkDragAction  *suggested_action,
7314                      GdkAtom        *target)
7315 {
7316   GtkTreePath *path = NULL;
7317   GtkTreeViewDropPosition pos;
7318   GtkTreeViewDropPosition old_pos;
7319   TreeViewDragInfo *di;
7320   GtkWidget *widget;
7321   GtkTreePath *old_dest_path = NULL;
7322   gboolean can_drop = FALSE;
7323
7324   *suggested_action = 0;
7325   *target = GDK_NONE;
7326
7327   widget = GTK_WIDGET (tree_view);
7328
7329   di = get_info (tree_view);
7330
7331   if (di == NULL || y - gtk_tree_view_get_effective_header_height (tree_view) < 0)
7332     {
7333       /* someone unset us as a drag dest, note that if
7334        * we return FALSE drag_leave isn't called
7335        */
7336
7337       gtk_tree_view_set_drag_dest_row (tree_view,
7338                                        NULL,
7339                                        GTK_TREE_VIEW_DROP_BEFORE);
7340
7341       remove_scroll_timeout (GTK_TREE_VIEW (widget));
7342       remove_open_timeout (GTK_TREE_VIEW (widget));
7343
7344       return FALSE; /* no longer a drop site */
7345     }
7346
7347   *target = gtk_drag_dest_find_target (widget, context,
7348                                        gtk_drag_dest_get_target_list (widget));
7349   if (*target == GDK_NONE)
7350     {
7351       return FALSE;
7352     }
7353
7354   if (!gtk_tree_view_get_dest_row_at_pos (tree_view,
7355                                           x, y,
7356                                           &path,
7357                                           &pos))
7358     {
7359       gint n_children;
7360       GtkTreeModel *model;
7361
7362       remove_open_timeout (tree_view);
7363
7364       /* the row got dropped on empty space, let's setup a special case
7365        */
7366
7367       if (path)
7368         gtk_tree_path_free (path);
7369
7370       model = gtk_tree_view_get_model (tree_view);
7371
7372       n_children = gtk_tree_model_iter_n_children (model, NULL);
7373       if (n_children)
7374         {
7375           pos = GTK_TREE_VIEW_DROP_AFTER;
7376           path = gtk_tree_path_new_from_indices (n_children - 1, -1);
7377         }
7378       else
7379         {
7380           pos = GTK_TREE_VIEW_DROP_BEFORE;
7381           path = gtk_tree_path_new_from_indices (0, -1);
7382         }
7383
7384       can_drop = TRUE;
7385
7386       goto out;
7387     }
7388
7389   g_assert (path);
7390
7391   /* If we left the current row's "open" zone, unset the timeout for
7392    * opening the row
7393    */
7394   gtk_tree_view_get_drag_dest_row (tree_view,
7395                                    &old_dest_path,
7396                                    &old_pos);
7397
7398   if (old_dest_path &&
7399       (gtk_tree_path_compare (path, old_dest_path) != 0 ||
7400        !(pos == GTK_TREE_VIEW_DROP_INTO_OR_AFTER ||
7401          pos == GTK_TREE_VIEW_DROP_INTO_OR_BEFORE)))
7402     remove_open_timeout (tree_view);
7403
7404   if (old_dest_path)
7405     gtk_tree_path_free (old_dest_path);
7406
7407   if (TRUE /* FIXME if the location droppable predicate */)
7408     {
7409       can_drop = TRUE;
7410     }
7411
7412 out:
7413   if (can_drop)
7414     {
7415       GtkWidget *source_widget;
7416
7417       *suggested_action = gdk_drag_context_get_suggested_action (context);
7418       source_widget = gtk_drag_get_source_widget (context);
7419
7420       if (source_widget == widget)
7421         {
7422           /* Default to MOVE, unless the user has
7423            * pressed ctrl or shift to affect available actions
7424            */
7425           if ((gdk_drag_context_get_actions (context) & GDK_ACTION_MOVE) != 0)
7426             *suggested_action = GDK_ACTION_MOVE;
7427         }
7428
7429       gtk_tree_view_set_drag_dest_row (GTK_TREE_VIEW (widget),
7430                                        path, pos);
7431     }
7432   else
7433     {
7434       /* can't drop here */
7435       remove_open_timeout (tree_view);
7436
7437       gtk_tree_view_set_drag_dest_row (GTK_TREE_VIEW (widget),
7438                                        NULL,
7439                                        GTK_TREE_VIEW_DROP_BEFORE);
7440     }
7441
7442   if (path)
7443     gtk_tree_path_free (path);
7444
7445   return TRUE;
7446 }
7447
7448 static GtkTreePath*
7449 get_logical_dest_row (GtkTreeView *tree_view,
7450                       gboolean    *path_down_mode,
7451                       gboolean    *drop_append_mode)
7452 {
7453   /* adjust path to point to the row the drop goes in front of */
7454   GtkTreePath *path = NULL;
7455   GtkTreeViewDropPosition pos;
7456
7457   g_return_val_if_fail (path_down_mode != NULL, NULL);
7458   g_return_val_if_fail (drop_append_mode != NULL, NULL);
7459
7460   *path_down_mode = FALSE;
7461   *drop_append_mode = 0;
7462
7463   gtk_tree_view_get_drag_dest_row (tree_view, &path, &pos);
7464
7465   if (path == NULL)
7466     return NULL;
7467
7468   if (pos == GTK_TREE_VIEW_DROP_BEFORE)
7469     ; /* do nothing */
7470   else if (pos == GTK_TREE_VIEW_DROP_INTO_OR_BEFORE ||
7471            pos == GTK_TREE_VIEW_DROP_INTO_OR_AFTER)
7472     *path_down_mode = TRUE;
7473   else
7474     {
7475       GtkTreeIter iter;
7476       GtkTreeModel *model = gtk_tree_view_get_model (tree_view);
7477
7478       g_assert (pos == GTK_TREE_VIEW_DROP_AFTER);
7479
7480       if (!gtk_tree_model_get_iter (model, &iter, path) ||
7481           !gtk_tree_model_iter_next (model, &iter))
7482         *drop_append_mode = 1;
7483       else
7484         {
7485           *drop_append_mode = 0;
7486           gtk_tree_path_next (path);
7487         }
7488     }
7489
7490   return path;
7491 }
7492
7493 static gboolean
7494 gtk_tree_view_maybe_begin_dragging_row (GtkTreeView      *tree_view,
7495                                         GdkEventMotion   *event)
7496 {
7497   GtkWidget *widget = GTK_WIDGET (tree_view);
7498   GdkDragContext *context;
7499   TreeViewDragInfo *di;
7500   GtkTreePath *path = NULL;
7501   gint button;
7502   gint cell_x, cell_y;
7503   GtkTreeModel *model;
7504   gboolean retval = FALSE;
7505
7506   di = get_info (tree_view);
7507
7508   if (di == NULL || !di->source_set)
7509     goto out;
7510
7511   if (tree_view->priv->pressed_button < 0)
7512     goto out;
7513
7514   if (!gtk_drag_check_threshold (widget,
7515                                  tree_view->priv->press_start_x,
7516                                  tree_view->priv->press_start_y,
7517                                  event->x, event->y))
7518     goto out;
7519
7520   model = gtk_tree_view_get_model (tree_view);
7521
7522   if (model == NULL)
7523     goto out;
7524
7525   button = tree_view->priv->pressed_button;
7526   tree_view->priv->pressed_button = -1;
7527
7528   gtk_tree_view_get_path_at_pos (tree_view,
7529                                  tree_view->priv->press_start_x,
7530                                  tree_view->priv->press_start_y,
7531                                  &path,
7532                                  NULL,
7533                                  &cell_x,
7534                                  &cell_y);
7535
7536   if (path == NULL)
7537     goto out;
7538
7539   if (!GTK_IS_TREE_DRAG_SOURCE (model) ||
7540       !gtk_tree_drag_source_row_draggable (GTK_TREE_DRAG_SOURCE (model),
7541                                            path))
7542     goto out;
7543
7544   if (!(GDK_BUTTON1_MASK << (button - 1) & di->start_button_mask))
7545     goto out;
7546
7547   /* Now we can begin the drag */
7548
7549   retval = TRUE;
7550
7551   context = gtk_drag_begin (widget,
7552                             gtk_drag_source_get_target_list (widget),
7553                             di->source_actions,
7554                             button,
7555                             (GdkEvent*)event);
7556
7557   set_source_row (context, model, path);
7558
7559  out:
7560   if (path)
7561     gtk_tree_path_free (path);
7562
7563   return retval;
7564 }
7565
7566
7567 static void
7568 gtk_tree_view_drag_begin (GtkWidget      *widget,
7569                           GdkDragContext *context)
7570 {
7571   GtkTreeView *tree_view;
7572   GtkTreePath *path = NULL;
7573   gint cell_x, cell_y;
7574   cairo_surface_t *row_pix;
7575   TreeViewDragInfo *di;
7576
7577   tree_view = GTK_TREE_VIEW (widget);
7578
7579   /* if the user uses a custom DND source impl, we don't set the icon here */
7580   di = get_info (tree_view);
7581
7582   if (di == NULL || !di->source_set)
7583     return;
7584
7585   gtk_tree_view_get_path_at_pos (tree_view,
7586                                  tree_view->priv->press_start_x,
7587                                  tree_view->priv->press_start_y,
7588                                  &path,
7589                                  NULL,
7590                                  &cell_x,
7591                                  &cell_y);
7592
7593   /* If path is NULL, there's nothing we can drag.  For now, we silently
7594    * bail out.  Actually, dragging should not be possible from an empty
7595    * tree view, but there's no way we can cancel that from here.
7596    * Automatically unsetting the tree view as drag source for empty models
7597    * is something that would likely break other people's code ...
7598    */
7599   if (!path)
7600     return;
7601
7602   row_pix = gtk_tree_view_create_row_drag_icon (tree_view,
7603                                                 path);
7604   cairo_surface_set_device_offset (row_pix,
7605                                    /* the + 1 is for the black border in the icon */
7606                                    - (tree_view->priv->press_start_x + 1),
7607                                    - (cell_y + 1));
7608
7609   gtk_drag_set_icon_surface (context, row_pix);
7610
7611   cairo_surface_destroy (row_pix);
7612   gtk_tree_path_free (path);
7613 }
7614
7615 static void
7616 gtk_tree_view_drag_end (GtkWidget      *widget,
7617                         GdkDragContext *context)
7618 {
7619   /* do nothing */
7620 }
7621
7622 /* Default signal implementations for the drag signals */
7623 static void
7624 gtk_tree_view_drag_data_get (GtkWidget        *widget,
7625                              GdkDragContext   *context,
7626                              GtkSelectionData *selection_data,
7627                              guint             info,
7628                              guint             time)
7629 {
7630   GtkTreeView *tree_view;
7631   GtkTreeModel *model;
7632   TreeViewDragInfo *di;
7633   GtkTreePath *source_row;
7634
7635   tree_view = GTK_TREE_VIEW (widget);
7636
7637   model = gtk_tree_view_get_model (tree_view);
7638
7639   if (model == NULL)
7640     return;
7641
7642   di = get_info (GTK_TREE_VIEW (widget));
7643
7644   if (di == NULL)
7645     return;
7646
7647   source_row = get_source_row (context);
7648
7649   if (source_row == NULL)
7650     return;
7651
7652   /* We can implement the GTK_TREE_MODEL_ROW target generically for
7653    * any model; for DragSource models there are some other targets
7654    * we also support.
7655    */
7656
7657   if (GTK_IS_TREE_DRAG_SOURCE (model) &&
7658       gtk_tree_drag_source_drag_data_get (GTK_TREE_DRAG_SOURCE (model),
7659                                           source_row,
7660                                           selection_data))
7661     goto done;
7662
7663   /* If drag_data_get does nothing, try providing row data. */
7664   if (gtk_selection_data_get_target (selection_data) == gdk_atom_intern_static_string ("GTK_TREE_MODEL_ROW"))
7665     {
7666       gtk_tree_set_row_drag_data (selection_data,
7667                                   model,
7668                                   source_row);
7669     }
7670
7671  done:
7672   gtk_tree_path_free (source_row);
7673 }
7674
7675
7676 static void
7677 gtk_tree_view_drag_data_delete (GtkWidget      *widget,
7678                                 GdkDragContext *context)
7679 {
7680   TreeViewDragInfo *di;
7681   GtkTreeModel *model;
7682   GtkTreeView *tree_view;
7683   GtkTreePath *source_row;
7684
7685   tree_view = GTK_TREE_VIEW (widget);
7686   model = gtk_tree_view_get_model (tree_view);
7687
7688   if (!check_model_dnd (model, GTK_TYPE_TREE_DRAG_SOURCE, "drag_data_delete"))
7689     return;
7690
7691   di = get_info (tree_view);
7692
7693   if (di == NULL)
7694     return;
7695
7696   source_row = get_source_row (context);
7697
7698   if (source_row == NULL)
7699     return;
7700
7701   gtk_tree_drag_source_drag_data_delete (GTK_TREE_DRAG_SOURCE (model),
7702                                          source_row);
7703
7704   gtk_tree_path_free (source_row);
7705
7706   set_source_row (context, NULL, NULL);
7707 }
7708
7709 static void
7710 gtk_tree_view_drag_leave (GtkWidget      *widget,
7711                           GdkDragContext *context,
7712                           guint             time)
7713 {
7714   /* unset any highlight row */
7715   gtk_tree_view_set_drag_dest_row (GTK_TREE_VIEW (widget),
7716                                    NULL,
7717                                    GTK_TREE_VIEW_DROP_BEFORE);
7718
7719   remove_scroll_timeout (GTK_TREE_VIEW (widget));
7720   remove_open_timeout (GTK_TREE_VIEW (widget));
7721 }
7722
7723
7724 static gboolean
7725 gtk_tree_view_drag_motion (GtkWidget        *widget,
7726                            GdkDragContext   *context,
7727                            /* coordinates relative to the widget */
7728                            gint              x,
7729                            gint              y,
7730                            guint             time)
7731 {
7732   gboolean empty;
7733   GtkTreePath *path = NULL;
7734   GtkTreeViewDropPosition pos;
7735   GtkTreeView *tree_view;
7736   GdkDragAction suggested_action = 0;
7737   GdkAtom target;
7738
7739   tree_view = GTK_TREE_VIEW (widget);
7740
7741   if (!set_destination_row (tree_view, context, x, y, &suggested_action, &target))
7742     return FALSE;
7743
7744   gtk_tree_view_get_drag_dest_row (tree_view, &path, &pos);
7745
7746   /* we only know this *after* set_desination_row */
7747   empty = tree_view->priv->empty_view_drop;
7748
7749   if (path == NULL && !empty)
7750     {
7751       /* Can't drop here. */
7752       gdk_drag_status (context, 0, time);
7753     }
7754   else
7755     {
7756       if (tree_view->priv->open_dest_timeout == 0 &&
7757           (pos == GTK_TREE_VIEW_DROP_INTO_OR_AFTER ||
7758            pos == GTK_TREE_VIEW_DROP_INTO_OR_BEFORE))
7759         {
7760           tree_view->priv->open_dest_timeout =
7761             gdk_threads_add_timeout (AUTO_EXPAND_TIMEOUT, open_row_timeout, tree_view);
7762         }
7763       else
7764         {
7765           add_scroll_timeout (tree_view);
7766         }
7767
7768       if (target == gdk_atom_intern_static_string ("GTK_TREE_MODEL_ROW"))
7769         {
7770           /* Request data so we can use the source row when
7771            * determining whether to accept the drop
7772            */
7773           set_status_pending (context, suggested_action);
7774           gtk_drag_get_data (widget, context, target, time);
7775         }
7776       else
7777         {
7778           set_status_pending (context, 0);
7779           gdk_drag_status (context, suggested_action, time);
7780         }
7781     }
7782
7783   if (path)
7784     gtk_tree_path_free (path);
7785
7786   return TRUE;
7787 }
7788
7789
7790 static gboolean
7791 gtk_tree_view_drag_drop (GtkWidget        *widget,
7792                          GdkDragContext   *context,
7793                          /* coordinates relative to the widget */
7794                          gint              x,
7795                          gint              y,
7796                          guint             time)
7797 {
7798   GtkTreeView *tree_view;
7799   GtkTreePath *path;
7800   GdkDragAction suggested_action = 0;
7801   GdkAtom target = GDK_NONE;
7802   TreeViewDragInfo *di;
7803   GtkTreeModel *model;
7804   gboolean path_down_mode;
7805   gboolean drop_append_mode;
7806
7807   tree_view = GTK_TREE_VIEW (widget);
7808
7809   model = gtk_tree_view_get_model (tree_view);
7810
7811   remove_scroll_timeout (GTK_TREE_VIEW (widget));
7812   remove_open_timeout (GTK_TREE_VIEW (widget));
7813
7814   di = get_info (tree_view);
7815
7816   if (di == NULL)
7817     return FALSE;
7818
7819   if (!check_model_dnd (model, GTK_TYPE_TREE_DRAG_DEST, "drag_drop"))
7820     return FALSE;
7821
7822   if (!set_destination_row (tree_view, context, x, y, &suggested_action, &target))
7823     return FALSE;
7824
7825   path = get_logical_dest_row (tree_view, &path_down_mode, &drop_append_mode);
7826
7827   if (target != GDK_NONE && path != NULL)
7828     {
7829       /* in case a motion had requested drag data, change things so we
7830        * treat drag data receives as a drop.
7831        */
7832       set_status_pending (context, 0);
7833       set_dest_row (context, model, path,
7834                     path_down_mode, tree_view->priv->empty_view_drop,
7835                     drop_append_mode);
7836     }
7837
7838   if (path)
7839     gtk_tree_path_free (path);
7840
7841   /* Unset this thing */
7842   gtk_tree_view_set_drag_dest_row (GTK_TREE_VIEW (widget),
7843                                    NULL,
7844                                    GTK_TREE_VIEW_DROP_BEFORE);
7845
7846   if (target != GDK_NONE)
7847     {
7848       gtk_drag_get_data (widget, context, target, time);
7849       return TRUE;
7850     }
7851   else
7852     return FALSE;
7853 }
7854
7855 static void
7856 gtk_tree_view_drag_data_received (GtkWidget        *widget,
7857                                   GdkDragContext   *context,
7858                                   /* coordinates relative to the widget */
7859                                   gint              x,
7860                                   gint              y,
7861                                   GtkSelectionData *selection_data,
7862                                   guint             info,
7863                                   guint             time)
7864 {
7865   GtkTreePath *path;
7866   TreeViewDragInfo *di;
7867   gboolean accepted = FALSE;
7868   GtkTreeModel *model;
7869   GtkTreeView *tree_view;
7870   GtkTreePath *dest_row;
7871   GdkDragAction suggested_action;
7872   gboolean path_down_mode;
7873   gboolean drop_append_mode;
7874
7875   tree_view = GTK_TREE_VIEW (widget);
7876
7877   model = gtk_tree_view_get_model (tree_view);
7878
7879   if (!check_model_dnd (model, GTK_TYPE_TREE_DRAG_DEST, "drag_data_received"))
7880     return;
7881
7882   di = get_info (tree_view);
7883
7884   if (di == NULL)
7885     return;
7886
7887   suggested_action = get_status_pending (context);
7888
7889   if (suggested_action)
7890     {
7891       /* We are getting this data due to a request in drag_motion,
7892        * rather than due to a request in drag_drop, so we are just
7893        * supposed to call drag_status, not actually paste in the
7894        * data.
7895        */
7896       path = get_logical_dest_row (tree_view, &path_down_mode,
7897                                    &drop_append_mode);
7898
7899       if (path == NULL)
7900         suggested_action = 0;
7901       else if (path_down_mode)
7902         gtk_tree_path_down (path);
7903
7904       if (suggested_action)
7905         {
7906           if (!gtk_tree_drag_dest_row_drop_possible (GTK_TREE_DRAG_DEST (model),
7907                                                      path,
7908                                                      selection_data))
7909             {
7910               if (path_down_mode)
7911                 {
7912                   path_down_mode = FALSE;
7913                   gtk_tree_path_up (path);
7914
7915                   if (!gtk_tree_drag_dest_row_drop_possible (GTK_TREE_DRAG_DEST (model),
7916                                                              path,
7917                                                              selection_data))
7918                     suggested_action = 0;
7919                 }
7920               else
7921                 suggested_action = 0;
7922             }
7923         }
7924
7925       gdk_drag_status (context, suggested_action, time);
7926
7927       if (path)
7928         gtk_tree_path_free (path);
7929
7930       /* If you can't drop, remove user drop indicator until the next motion */
7931       if (suggested_action == 0)
7932         gtk_tree_view_set_drag_dest_row (GTK_TREE_VIEW (widget),
7933                                          NULL,
7934                                          GTK_TREE_VIEW_DROP_BEFORE);
7935
7936       return;
7937     }
7938
7939   dest_row = get_dest_row (context, &path_down_mode);
7940
7941   if (dest_row == NULL)
7942     return;
7943
7944   if (gtk_selection_data_get_length (selection_data) >= 0)
7945     {
7946       if (path_down_mode)
7947         {
7948           gtk_tree_path_down (dest_row);
7949           if (!gtk_tree_drag_dest_row_drop_possible (GTK_TREE_DRAG_DEST (model),
7950                                                      dest_row, selection_data))
7951             gtk_tree_path_up (dest_row);
7952         }
7953     }
7954
7955   if (gtk_selection_data_get_length (selection_data) >= 0)
7956     {
7957       if (gtk_tree_drag_dest_drag_data_received (GTK_TREE_DRAG_DEST (model),
7958                                                  dest_row,
7959                                                  selection_data))
7960         accepted = TRUE;
7961     }
7962
7963   gtk_drag_finish (context,
7964                    accepted,
7965                    (gdk_drag_context_get_selected_action (context) == GDK_ACTION_MOVE),
7966                    time);
7967
7968   if (gtk_tree_path_get_depth (dest_row) == 1 &&
7969       gtk_tree_path_get_indices (dest_row)[0] == 0 &&
7970       gtk_tree_model_iter_n_children (tree_view->priv->model, NULL) != 0)
7971     {
7972       /* special special case drag to "0", scroll to first item */
7973       if (!tree_view->priv->scroll_to_path)
7974         gtk_tree_view_scroll_to_cell (tree_view, dest_row, NULL, FALSE, 0.0, 0.0);
7975     }
7976
7977   gtk_tree_path_free (dest_row);
7978
7979   /* drop dest_row */
7980   set_dest_row (context, NULL, NULL, FALSE, FALSE, FALSE);
7981 }
7982
7983
7984
7985 /* GtkContainer Methods
7986  */
7987
7988
7989 static void
7990 gtk_tree_view_remove (GtkContainer *container,
7991                       GtkWidget    *widget)
7992 {
7993   GtkTreeView *tree_view = GTK_TREE_VIEW (container);
7994   GtkTreeViewChild *child = NULL;
7995   GList *tmp_list;
7996
7997   tmp_list = tree_view->priv->children;
7998   while (tmp_list)
7999     {
8000       child = tmp_list->data;
8001       if (child->widget == widget)
8002         {
8003           gtk_widget_unparent (widget);
8004
8005           tree_view->priv->children = g_list_remove_link (tree_view->priv->children, tmp_list);
8006           g_list_free_1 (tmp_list);
8007           g_slice_free (GtkTreeViewChild, child);
8008           return;
8009         }
8010
8011       tmp_list = tmp_list->next;
8012     }
8013
8014   tmp_list = tree_view->priv->columns;
8015
8016   while (tmp_list)
8017     {
8018       GtkTreeViewColumn *column;
8019       GtkWidget         *button;
8020
8021       column = tmp_list->data;
8022       button = gtk_tree_view_column_get_button (column);
8023
8024       if (button == widget)
8025         {
8026           gtk_widget_unparent (widget);
8027           return;
8028         }
8029       tmp_list = tmp_list->next;
8030     }
8031 }
8032
8033 static void
8034 gtk_tree_view_forall (GtkContainer *container,
8035                       gboolean      include_internals,
8036                       GtkCallback   callback,
8037                       gpointer      callback_data)
8038 {
8039   GtkTreeView *tree_view = GTK_TREE_VIEW (container);
8040   GtkTreeViewChild *child = NULL;
8041   GtkTreeViewColumn *column;
8042   GtkWidget *button;
8043   GList *tmp_list;
8044
8045   tmp_list = tree_view->priv->children;
8046   while (tmp_list)
8047     {
8048       child = tmp_list->data;
8049       tmp_list = tmp_list->next;
8050
8051       (* callback) (child->widget, callback_data);
8052     }
8053   if (include_internals == FALSE)
8054     return;
8055
8056   for (tmp_list = tree_view->priv->columns; tmp_list; tmp_list = tmp_list->next)
8057     {
8058       column = tmp_list->data;
8059       button = gtk_tree_view_column_get_button (column);
8060
8061       if (button)
8062         (* callback) (button, callback_data);
8063     }
8064 }
8065
8066 /* Returns TRUE is any of the columns contains a cell that can-focus.
8067  * If this is not the case, a column-spanning focus rectangle will be
8068  * drawn.
8069  */
8070 static gboolean
8071 gtk_tree_view_has_can_focus_cell (GtkTreeView *tree_view)
8072 {
8073   GList *list;
8074
8075   for (list = tree_view->priv->columns; list; list = list->next)
8076     {
8077       GtkTreeViewColumn *column = list->data;
8078
8079       if (!gtk_tree_view_column_get_visible (column))
8080         continue;
8081       if (gtk_cell_area_is_activatable (gtk_cell_layout_get_area (GTK_CELL_LAYOUT (column))))
8082         return TRUE;
8083     }
8084
8085   return FALSE;
8086 }
8087
8088 static void
8089 column_sizing_notify (GObject    *object,
8090                       GParamSpec *pspec,
8091                       gpointer    data)
8092 {
8093   GtkTreeViewColumn *c = GTK_TREE_VIEW_COLUMN (object);
8094
8095   if (gtk_tree_view_column_get_sizing (c) != GTK_TREE_VIEW_COLUMN_FIXED)
8096     /* disable fixed height mode */
8097     g_object_set (data, "fixed-height-mode", FALSE, NULL);
8098 }
8099
8100 /**
8101  * gtk_tree_view_set_fixed_height_mode:
8102  * @tree_view: a #GtkTreeView
8103  * @enable: %TRUE to enable fixed height mode
8104  *
8105  * Enables or disables the fixed height mode of @tree_view.
8106  * Fixed height mode speeds up #GtkTreeView by assuming that all
8107  * rows have the same height.
8108  * Only enable this option if all rows are the same height and all
8109  * columns are of type %GTK_TREE_VIEW_COLUMN_FIXED.
8110  *
8111  * Since: 2.6
8112  **/
8113 void
8114 gtk_tree_view_set_fixed_height_mode (GtkTreeView *tree_view,
8115                                      gboolean     enable)
8116 {
8117   GList *l;
8118
8119   enable = enable != FALSE;
8120
8121   if (enable == tree_view->priv->fixed_height_mode)
8122     return;
8123
8124   if (!enable)
8125     {
8126       tree_view->priv->fixed_height_mode = 0;
8127       tree_view->priv->fixed_height = -1;
8128     }
8129   else
8130     {
8131       /* make sure all columns are of type FIXED */
8132       for (l = tree_view->priv->columns; l; l = l->next)
8133         {
8134           GtkTreeViewColumn *c = l->data;
8135
8136           g_return_if_fail (gtk_tree_view_column_get_sizing (c) == GTK_TREE_VIEW_COLUMN_FIXED);
8137         }
8138
8139       /* yes, we really have to do this is in a separate loop */
8140       for (l = tree_view->priv->columns; l; l = l->next)
8141         g_signal_connect (l->data, "notify::sizing",
8142                           G_CALLBACK (column_sizing_notify), tree_view);
8143
8144       tree_view->priv->fixed_height_mode = 1;
8145       tree_view->priv->fixed_height = -1;
8146     }
8147
8148   /* force a revalidation */
8149   install_presize_handler (tree_view);
8150
8151   g_object_notify (G_OBJECT (tree_view), "fixed-height-mode");
8152 }
8153
8154 /**
8155  * gtk_tree_view_get_fixed_height_mode:
8156  * @tree_view: a #GtkTreeView
8157  *
8158  * Returns whether fixed height mode is turned on for @tree_view.
8159  *
8160  * Return value: %TRUE if @tree_view is in fixed height mode
8161  *
8162  * Since: 2.6
8163  **/
8164 gboolean
8165 gtk_tree_view_get_fixed_height_mode (GtkTreeView *tree_view)
8166 {
8167   return tree_view->priv->fixed_height_mode;
8168 }
8169
8170 /* Returns TRUE if the focus is within the headers, after the focus operation is
8171  * done
8172  */
8173 static gboolean
8174 gtk_tree_view_header_focus (GtkTreeView      *tree_view,
8175                             GtkDirectionType  dir,
8176                             gboolean          clamp_column_visible)
8177 {
8178   GtkTreeViewColumn *column;
8179   GtkWidget *focus_child;
8180   GtkWidget *button;
8181   GList *last_column, *first_column;
8182   GList *tmp_list;
8183   gboolean rtl;
8184
8185   if (! tree_view->priv->headers_visible)
8186     return FALSE;
8187
8188   focus_child = gtk_container_get_focus_child (GTK_CONTAINER (tree_view));
8189
8190   first_column = tree_view->priv->columns;
8191   while (first_column)
8192     {
8193       column = GTK_TREE_VIEW_COLUMN (first_column->data);
8194       button = gtk_tree_view_column_get_button (column);
8195
8196       if (gtk_widget_get_can_focus (button) &&
8197           gtk_tree_view_column_get_visible (column) &&
8198           (gtk_tree_view_column_get_clickable (column) ||
8199            gtk_tree_view_column_get_reorderable (column)))
8200         break;
8201       first_column = first_column->next;
8202     }
8203
8204   /* No headers are visible, or are focusable.  We can't focus in or out.
8205    */
8206   if (first_column == NULL)
8207     return FALSE;
8208
8209   last_column = g_list_last (tree_view->priv->columns);
8210   while (last_column)
8211     {
8212       column = GTK_TREE_VIEW_COLUMN (last_column->data);
8213       button = gtk_tree_view_column_get_button (column);
8214
8215       if (gtk_widget_get_can_focus (button) &&
8216           gtk_tree_view_column_get_visible (column) &&
8217           (gtk_tree_view_column_get_clickable (column) ||
8218            gtk_tree_view_column_get_reorderable (column)))
8219         break;
8220       last_column = last_column->prev;
8221     }
8222
8223
8224   rtl = (gtk_widget_get_direction (GTK_WIDGET (tree_view)) == GTK_TEXT_DIR_RTL);
8225
8226   switch (dir)
8227     {
8228     case GTK_DIR_TAB_BACKWARD:
8229     case GTK_DIR_TAB_FORWARD:
8230     case GTK_DIR_UP:
8231     case GTK_DIR_DOWN:
8232       if (focus_child == NULL)
8233         {
8234           if (tree_view->priv->focus_column != NULL)
8235             button = gtk_tree_view_column_get_button (tree_view->priv->focus_column);
8236           else
8237             button = NULL;
8238
8239           if (button && gtk_widget_get_can_focus (button))
8240             focus_child = button;
8241           else
8242             focus_child = gtk_tree_view_column_get_button (GTK_TREE_VIEW_COLUMN (first_column->data));
8243
8244           gtk_widget_grab_focus (focus_child);
8245           break;
8246         }
8247       return FALSE;
8248
8249     case GTK_DIR_LEFT:
8250     case GTK_DIR_RIGHT:
8251       if (focus_child == NULL)
8252         {
8253           if (tree_view->priv->focus_column != NULL)
8254             focus_child = gtk_tree_view_column_get_button (tree_view->priv->focus_column);
8255           else if (dir == GTK_DIR_LEFT)
8256             focus_child = gtk_tree_view_column_get_button (GTK_TREE_VIEW_COLUMN (last_column->data));
8257           else
8258             focus_child = gtk_tree_view_column_get_button (GTK_TREE_VIEW_COLUMN (first_column->data));
8259
8260           gtk_widget_grab_focus (focus_child);
8261           break;
8262         }
8263
8264       if (gtk_widget_child_focus (focus_child, dir))
8265         {
8266           /* The focus moves inside the button. */
8267           /* This is probably a great example of bad UI */
8268           break;
8269         }
8270
8271       /* We need to move the focus among the row of buttons. */
8272       for (tmp_list = tree_view->priv->columns; tmp_list; tmp_list = tmp_list->next)
8273         if (gtk_tree_view_column_get_button (GTK_TREE_VIEW_COLUMN (tmp_list->data)) == focus_child)
8274           break;
8275
8276       if ((tmp_list == first_column && dir == (rtl ? GTK_DIR_RIGHT : GTK_DIR_LEFT))
8277           || (tmp_list == last_column && dir == (rtl ? GTK_DIR_LEFT : GTK_DIR_RIGHT)))
8278         {
8279           gtk_widget_error_bell (GTK_WIDGET (tree_view));
8280           break;
8281         }
8282
8283       while (tmp_list)
8284         {
8285           GtkTreeViewColumn *column;
8286           GtkWidget         *button;
8287
8288           if (dir == (rtl ? GTK_DIR_LEFT : GTK_DIR_RIGHT))
8289             tmp_list = tmp_list->next;
8290           else
8291             tmp_list = tmp_list->prev;
8292
8293           if (tmp_list == NULL)
8294             {
8295               g_warning ("Internal button not found");
8296               break;
8297             }
8298           column = tmp_list->data;
8299           button = gtk_tree_view_column_get_button (column);
8300           if (button &&
8301               gtk_tree_view_column_get_visible (column) &&
8302               gtk_widget_get_can_focus (button))
8303             {
8304               focus_child = button;
8305               gtk_widget_grab_focus (button);
8306               break;
8307             }
8308         }
8309       break;
8310     default:
8311       g_assert_not_reached ();
8312       break;
8313     }
8314
8315   /* if focus child is non-null, we assume it's been set to the current focus child
8316    */
8317   if (focus_child)
8318     {
8319       for (tmp_list = tree_view->priv->columns; tmp_list; tmp_list = tmp_list->next)
8320         if (gtk_tree_view_column_get_button (GTK_TREE_VIEW_COLUMN (tmp_list->data)) == focus_child)
8321           {
8322             _gtk_tree_view_set_focus_column (tree_view, GTK_TREE_VIEW_COLUMN (tmp_list->data));
8323             break;
8324           }
8325
8326       if (clamp_column_visible)
8327         {
8328           gtk_tree_view_clamp_column_visible (tree_view,
8329                                               tree_view->priv->focus_column,
8330                                               FALSE);
8331         }
8332     }
8333
8334   return (focus_child != NULL);
8335 }
8336
8337 /* This function returns in 'path' the first focusable path, if the given path
8338  * is already focusable, it's the returned one.
8339  */
8340 static gboolean
8341 search_first_focusable_path (GtkTreeView  *tree_view,
8342                              GtkTreePath **path,
8343                              gboolean      search_forward,
8344                              GtkRBTree   **new_tree,
8345                              GtkRBNode   **new_node)
8346 {
8347   GtkRBTree *tree = NULL;
8348   GtkRBNode *node = NULL;
8349
8350   if (!path || !*path)
8351     return FALSE;
8352
8353   _gtk_tree_view_find_node (tree_view, *path, &tree, &node);
8354
8355   if (!tree || !node)
8356     return FALSE;
8357
8358   while (node && row_is_separator (tree_view, NULL, *path))
8359     {
8360       if (search_forward)
8361         _gtk_rbtree_next_full (tree, node, &tree, &node);
8362       else
8363         _gtk_rbtree_prev_full (tree, node, &tree, &node);
8364
8365       if (*path)
8366         gtk_tree_path_free (*path);
8367
8368       if (node)
8369         *path = _gtk_tree_path_new_from_rbtree (tree, node);
8370       else
8371         *path = NULL;
8372     }
8373
8374   if (new_tree)
8375     *new_tree = tree;
8376
8377   if (new_node)
8378     *new_node = node;
8379
8380   return (*path != NULL);
8381 }
8382
8383 static gint
8384 gtk_tree_view_focus (GtkWidget        *widget,
8385                      GtkDirectionType  direction)
8386 {
8387   GtkTreeView *tree_view = GTK_TREE_VIEW (widget);
8388   GtkContainer *container = GTK_CONTAINER (widget);
8389   GtkWidget *focus_child;
8390
8391   if (!gtk_widget_is_sensitive (widget) || !gtk_widget_get_can_focus (widget))
8392     return FALSE;
8393
8394   focus_child = gtk_container_get_focus_child (container);
8395
8396   gtk_tree_view_stop_editing (GTK_TREE_VIEW (widget), FALSE);
8397   /* Case 1.  Headers currently have focus. */
8398   if (focus_child)
8399     {
8400       switch (direction)
8401         {
8402         case GTK_DIR_LEFT:
8403         case GTK_DIR_RIGHT:
8404           gtk_tree_view_header_focus (tree_view, direction, TRUE);
8405           return TRUE;
8406         case GTK_DIR_TAB_BACKWARD:
8407         case GTK_DIR_UP:
8408           return FALSE;
8409         case GTK_DIR_TAB_FORWARD:
8410         case GTK_DIR_DOWN:
8411           gtk_widget_grab_focus (widget);
8412           return TRUE;
8413         default:
8414           g_assert_not_reached ();
8415           return FALSE;
8416         }
8417     }
8418
8419   /* Case 2. We don't have focus at all. */
8420   if (!gtk_widget_has_focus (widget))
8421     {
8422       gtk_widget_grab_focus (widget);
8423       return TRUE;
8424     }
8425
8426   /* Case 3. We have focus already. */
8427   if (direction == GTK_DIR_TAB_BACKWARD)
8428     return (gtk_tree_view_header_focus (tree_view, direction, FALSE));
8429   else if (direction == GTK_DIR_TAB_FORWARD)
8430     return FALSE;
8431
8432   /* Other directions caught by the keybindings */
8433   gtk_widget_grab_focus (widget);
8434   return TRUE;
8435 }
8436
8437 static void
8438 gtk_tree_view_grab_focus (GtkWidget *widget)
8439 {
8440   GTK_WIDGET_CLASS (gtk_tree_view_parent_class)->grab_focus (widget);
8441
8442   gtk_tree_view_focus_to_cursor (GTK_TREE_VIEW (widget));
8443 }
8444
8445 static void
8446 gtk_tree_view_style_updated (GtkWidget *widget)
8447 {
8448   GtkTreeView *tree_view = GTK_TREE_VIEW (widget);
8449   GList *list;
8450   GtkTreeViewColumn *column;
8451   GtkStyleContext *style_context;
8452   const GtkBitmask *changes;
8453
8454   GTK_WIDGET_CLASS (gtk_tree_view_parent_class)->style_updated (widget);
8455
8456   if (gtk_widget_get_realized (widget))
8457     {
8458       gtk_tree_view_ensure_background (tree_view);
8459
8460       gtk_tree_view_set_grid_lines (tree_view, tree_view->priv->grid_lines);
8461       gtk_tree_view_set_enable_tree_lines (tree_view, tree_view->priv->tree_lines_enabled);
8462     }
8463
8464   style_context = gtk_widget_get_style_context (widget);
8465   changes = _gtk_style_context_get_changes (style_context);
8466   if (changes == NULL || _gtk_css_style_property_changes_affect_size (changes))
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 }
8478
8479
8480 static void
8481 gtk_tree_view_set_focus_child (GtkContainer *container,
8482                                GtkWidget    *child)
8483 {
8484   GtkTreeView *tree_view = GTK_TREE_VIEW (container);
8485   GList *list;
8486
8487   for (list = tree_view->priv->columns; list; list = list->next)
8488     {
8489       if (gtk_tree_view_column_get_button (GTK_TREE_VIEW_COLUMN (list->data)) == child)
8490         {
8491           _gtk_tree_view_set_focus_column (tree_view, GTK_TREE_VIEW_COLUMN (list->data));
8492           break;
8493         }
8494     }
8495
8496   GTK_CONTAINER_CLASS (gtk_tree_view_parent_class)->set_focus_child (container, child);
8497 }
8498
8499 static GtkWidgetPath *
8500 gtk_tree_view_get_path_for_child (GtkContainer *container,
8501                                   GtkWidget    *child)
8502 {
8503   GtkTreeView *tree_view = GTK_TREE_VIEW (container);
8504   GtkWidgetPath *path;
8505   gboolean rtl;
8506   GList *list, *visible_columns = NULL;
8507   gint n_col = 0;
8508
8509   path = GTK_CONTAINER_CLASS (gtk_tree_view_parent_class)->get_path_for_child (container, child);
8510   rtl = (gtk_widget_get_direction (GTK_WIDGET (container)) == GTK_TEXT_DIR_RTL);
8511
8512   for (list = tree_view->priv->columns; list; list = list->next)
8513     {
8514       GtkTreeViewColumn *column = list->data;
8515
8516       if (gtk_tree_view_column_get_visible (column))
8517         visible_columns = g_list_prepend (visible_columns, column);
8518     }
8519
8520   if (!rtl)
8521     visible_columns = g_list_reverse (visible_columns);
8522
8523   for (list = visible_columns; list != NULL; list = list->next)
8524     {
8525       GtkTreeViewColumn *column = list->data;
8526       GtkRegionFlags flags = 0;
8527
8528       n_col++;
8529
8530       if (gtk_tree_view_column_get_widget (column) != child &&
8531           gtk_tree_view_column_get_button (column) != child)
8532         continue;
8533
8534       if ((n_col % 2) == 0)
8535         flags |= GTK_REGION_EVEN;
8536       else
8537         flags |= GTK_REGION_ODD;
8538
8539       if (n_col == 1)
8540         flags |= GTK_REGION_FIRST;
8541
8542       if (!list->next)
8543         flags |= GTK_REGION_LAST;
8544
8545       gtk_widget_path_iter_add_region (path, gtk_widget_path_length (path) - 2, GTK_STYLE_REGION_COLUMN_HEADER, flags);
8546       break;
8547     }
8548   g_list_free (visible_columns);
8549
8550   return path;
8551 }
8552
8553 static gboolean
8554 gtk_tree_view_real_move_cursor (GtkTreeView       *tree_view,
8555                                 GtkMovementStep    step,
8556                                 gint               count)
8557 {
8558   GdkModifierType state;
8559
8560   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), FALSE);
8561   g_return_val_if_fail (step == GTK_MOVEMENT_LOGICAL_POSITIONS ||
8562                         step == GTK_MOVEMENT_VISUAL_POSITIONS ||
8563                         step == GTK_MOVEMENT_DISPLAY_LINES ||
8564                         step == GTK_MOVEMENT_PAGES ||
8565                         step == GTK_MOVEMENT_BUFFER_ENDS, FALSE);
8566
8567   if (tree_view->priv->tree == NULL)
8568     return FALSE;
8569   if (!gtk_widget_has_focus (GTK_WIDGET (tree_view)))
8570     return FALSE;
8571
8572   gtk_tree_view_stop_editing (tree_view, FALSE);
8573   tree_view->priv->draw_keyfocus = TRUE;
8574   gtk_widget_grab_focus (GTK_WIDGET (tree_view));
8575
8576   if (gtk_get_current_event_state (&state))
8577     {
8578       GdkModifierType extend_mod_mask;
8579       GdkModifierType modify_mod_mask;
8580
8581       extend_mod_mask =
8582         gtk_widget_get_modifier_mask (GTK_WIDGET (tree_view),
8583                                       GDK_MODIFIER_INTENT_EXTEND_SELECTION);
8584
8585       modify_mod_mask =
8586         gtk_widget_get_modifier_mask (GTK_WIDGET (tree_view),
8587                                       GDK_MODIFIER_INTENT_MODIFY_SELECTION);
8588
8589       if ((state & modify_mod_mask) == modify_mod_mask)
8590         tree_view->priv->modify_selection_pressed = TRUE;
8591       if ((state & extend_mod_mask) == extend_mod_mask)
8592         tree_view->priv->extend_selection_pressed = TRUE;
8593     }
8594   /* else we assume not pressed */
8595
8596   switch (step)
8597     {
8598       /* currently we make no distinction.  When we go bi-di, we need to */
8599     case GTK_MOVEMENT_LOGICAL_POSITIONS:
8600     case GTK_MOVEMENT_VISUAL_POSITIONS:
8601       gtk_tree_view_move_cursor_left_right (tree_view, count);
8602       break;
8603     case GTK_MOVEMENT_DISPLAY_LINES:
8604       gtk_tree_view_move_cursor_up_down (tree_view, count);
8605       break;
8606     case GTK_MOVEMENT_PAGES:
8607       gtk_tree_view_move_cursor_page_up_down (tree_view, count);
8608       break;
8609     case GTK_MOVEMENT_BUFFER_ENDS:
8610       gtk_tree_view_move_cursor_start_end (tree_view, count);
8611       break;
8612     default:
8613       g_assert_not_reached ();
8614     }
8615
8616   tree_view->priv->modify_selection_pressed = FALSE;
8617   tree_view->priv->extend_selection_pressed = FALSE;
8618
8619   return TRUE;
8620 }
8621
8622 static void
8623 gtk_tree_view_put (GtkTreeView *tree_view,
8624                    GtkWidget   *child_widget,
8625                    /* in bin_window coordinates */
8626                    gint         x,
8627                    gint         y,
8628                    gint         width,
8629                    gint         height)
8630 {
8631   GtkTreeViewChild *child;
8632
8633   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
8634   g_return_if_fail (GTK_IS_WIDGET (child_widget));
8635
8636   child = g_slice_new (GtkTreeViewChild);
8637
8638   child->widget = child_widget;
8639   child->x = x;
8640   child->y = y;
8641   child->width = width;
8642   child->height = height;
8643
8644   tree_view->priv->children = g_list_append (tree_view->priv->children, child);
8645
8646   if (gtk_widget_get_realized (GTK_WIDGET (tree_view)))
8647     gtk_widget_set_parent_window (child->widget, tree_view->priv->bin_window);
8648
8649   gtk_widget_set_parent (child_widget, GTK_WIDGET (tree_view));
8650 }
8651
8652 void
8653 _gtk_tree_view_child_move_resize (GtkTreeView *tree_view,
8654                                   GtkWidget   *widget,
8655                                   /* in tree coordinates */
8656                                   gint         x,
8657                                   gint         y,
8658                                   gint         width,
8659                                   gint         height)
8660 {
8661   GtkTreeViewChild *child = NULL;
8662   GList *list;
8663   GdkRectangle allocation;
8664
8665   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
8666   g_return_if_fail (GTK_IS_WIDGET (widget));
8667
8668   for (list = tree_view->priv->children; list; list = list->next)
8669     {
8670       if (((GtkTreeViewChild *)list->data)->widget == widget)
8671         {
8672           child = list->data;
8673           break;
8674         }
8675     }
8676   if (child == NULL)
8677     return;
8678
8679   allocation.x = child->x = x;
8680   allocation.y = child->y = y;
8681   allocation.width = child->width = width;
8682   allocation.height = child->height = height;
8683
8684   if (gtk_widget_get_realized (widget))
8685     gtk_widget_size_allocate (widget, &allocation);
8686 }
8687
8688
8689 /* TreeModel Callbacks
8690  */
8691
8692 static void
8693 gtk_tree_view_row_changed (GtkTreeModel *model,
8694                            GtkTreePath  *path,
8695                            GtkTreeIter  *iter,
8696                            gpointer      data)
8697 {
8698   GtkTreeView *tree_view = (GtkTreeView *)data;
8699   GtkRBTree *tree;
8700   GtkRBNode *node;
8701   gboolean free_path = FALSE;
8702   GList *list;
8703   GtkTreePath *cursor_path;
8704
8705   g_return_if_fail (path != NULL || iter != NULL);
8706
8707   if (tree_view->priv->cursor_node != NULL)
8708     cursor_path = _gtk_tree_path_new_from_rbtree (tree_view->priv->cursor_tree,
8709                                                   tree_view->priv->cursor_node);
8710   else
8711     cursor_path = NULL;
8712
8713   if (tree_view->priv->edited_column &&
8714       (cursor_path == NULL || gtk_tree_path_compare (cursor_path, path) == 0))
8715     gtk_tree_view_stop_editing (tree_view, TRUE);
8716
8717   if (cursor_path != NULL)
8718     gtk_tree_path_free (cursor_path);
8719
8720   if (path == NULL)
8721     {
8722       path = gtk_tree_model_get_path (model, iter);
8723       free_path = TRUE;
8724     }
8725   else if (iter == NULL)
8726     gtk_tree_model_get_iter (model, iter, path);
8727
8728   if (_gtk_tree_view_find_node (tree_view,
8729                                 path,
8730                                 &tree,
8731                                 &node))
8732     /* We aren't actually showing the node */
8733     goto done;
8734
8735   if (tree == NULL)
8736     goto done;
8737
8738   _gtk_tree_view_accessible_changed (tree_view, tree, node);
8739
8740   if (tree_view->priv->fixed_height_mode
8741       && tree_view->priv->fixed_height >= 0)
8742     {
8743       _gtk_rbtree_node_set_height (tree, node, tree_view->priv->fixed_height);
8744       if (gtk_widget_get_realized (GTK_WIDGET (tree_view)))
8745         gtk_tree_view_node_queue_redraw (tree_view, tree, node);
8746     }
8747   else
8748     {
8749       _gtk_rbtree_node_mark_invalid (tree, node);
8750       for (list = tree_view->priv->columns; list; list = list->next)
8751         {
8752           GtkTreeViewColumn *column;
8753
8754           column = list->data;
8755           if (!gtk_tree_view_column_get_visible (column))
8756             continue;
8757
8758           if (gtk_tree_view_column_get_sizing (column) == GTK_TREE_VIEW_COLUMN_AUTOSIZE)
8759             {
8760               _gtk_tree_view_column_cell_set_dirty (column, TRUE);
8761             }
8762         }
8763     }
8764
8765  done:
8766   if (!tree_view->priv->fixed_height_mode &&
8767       gtk_widget_get_realized (GTK_WIDGET (tree_view)))
8768     install_presize_handler (tree_view);
8769   if (free_path)
8770     gtk_tree_path_free (path);
8771 }
8772
8773 static void
8774 gtk_tree_view_row_inserted (GtkTreeModel *model,
8775                             GtkTreePath  *path,
8776                             GtkTreeIter  *iter,
8777                             gpointer      data)
8778 {
8779   GtkTreeView *tree_view = (GtkTreeView *) data;
8780   gint *indices;
8781   GtkRBTree *tree;
8782   GtkRBNode *tmpnode = NULL;
8783   gint depth;
8784   gint i = 0;
8785   gint height;
8786   gboolean free_path = FALSE;
8787   gboolean node_visible = TRUE;
8788
8789   g_return_if_fail (path != NULL || iter != NULL);
8790
8791   if (tree_view->priv->fixed_height_mode
8792       && tree_view->priv->fixed_height >= 0)
8793     height = tree_view->priv->fixed_height;
8794   else
8795     height = 0;
8796
8797   if (path == NULL)
8798     {
8799       path = gtk_tree_model_get_path (model, iter);
8800       free_path = TRUE;
8801     }
8802   else if (iter == NULL)
8803     gtk_tree_model_get_iter (model, iter, path);
8804
8805   if (tree_view->priv->tree == NULL)
8806     tree_view->priv->tree = _gtk_rbtree_new ();
8807
8808   tree = tree_view->priv->tree;
8809
8810   /* Update all row-references */
8811   gtk_tree_row_reference_inserted (G_OBJECT (data), path);
8812   depth = gtk_tree_path_get_depth (path);
8813   indices = gtk_tree_path_get_indices (path);
8814
8815   /* First, find the parent tree */
8816   while (i < depth - 1)
8817     {
8818       if (tree == NULL)
8819         {
8820           /* We aren't showing the node */
8821           node_visible = FALSE;
8822           goto done;
8823         }
8824
8825       tmpnode = _gtk_rbtree_find_count (tree, indices[i] + 1);
8826       if (tmpnode == NULL)
8827         {
8828           g_warning ("A node was inserted with a parent that's not in the tree.\n" \
8829                      "This possibly means that a GtkTreeModel inserted a child node\n" \
8830                      "before the parent was inserted.");
8831           goto done;
8832         }
8833       else if (!GTK_RBNODE_FLAG_SET (tmpnode, GTK_RBNODE_IS_PARENT))
8834         {
8835           /* FIXME enforce correct behavior on model, probably */
8836           /* In theory, the model should have emitted has_child_toggled here.  We
8837            * try to catch it anyway, just to be safe, in case the model hasn't.
8838            */
8839           GtkTreePath *tmppath = _gtk_tree_path_new_from_rbtree (tree, tmpnode);
8840           gtk_tree_view_row_has_child_toggled (model, tmppath, NULL, data);
8841           gtk_tree_path_free (tmppath);
8842           goto done;
8843         }
8844
8845       tree = tmpnode->children;
8846       i++;
8847     }
8848
8849   if (tree == NULL)
8850     {
8851       node_visible = FALSE;
8852       goto done;
8853     }
8854
8855   /* ref the node */
8856   gtk_tree_model_ref_node (tree_view->priv->model, iter);
8857   if (indices[depth - 1] == 0)
8858     {
8859       tmpnode = _gtk_rbtree_find_count (tree, 1);
8860       tmpnode = _gtk_rbtree_insert_before (tree, tmpnode, height, FALSE);
8861     }
8862   else
8863     {
8864       tmpnode = _gtk_rbtree_find_count (tree, indices[depth - 1]);
8865       tmpnode = _gtk_rbtree_insert_after (tree, tmpnode, height, FALSE);
8866     }
8867
8868   _gtk_tree_view_accessible_add (tree_view, tree, tmpnode);
8869
8870  done:
8871   if (height > 0)
8872     {
8873       if (tree)
8874         _gtk_rbtree_node_mark_valid (tree, tmpnode);
8875
8876       if (node_visible && node_is_visible (tree_view, tree, tmpnode))
8877         gtk_widget_queue_resize (GTK_WIDGET (tree_view));
8878       else
8879         gtk_widget_queue_resize_no_redraw (GTK_WIDGET (tree_view));
8880     }
8881   else
8882     install_presize_handler (tree_view);
8883   if (free_path)
8884     gtk_tree_path_free (path);
8885 }
8886
8887 static void
8888 gtk_tree_view_row_has_child_toggled (GtkTreeModel *model,
8889                                      GtkTreePath  *path,
8890                                      GtkTreeIter  *iter,
8891                                      gpointer      data)
8892 {
8893   GtkTreeView *tree_view = (GtkTreeView *)data;
8894   GtkTreeIter real_iter;
8895   gboolean has_child;
8896   GtkRBTree *tree;
8897   GtkRBNode *node;
8898   gboolean free_path = FALSE;
8899
8900   g_return_if_fail (path != NULL || iter != NULL);
8901
8902   if (iter)
8903     real_iter = *iter;
8904
8905   if (path == NULL)
8906     {
8907       path = gtk_tree_model_get_path (model, iter);
8908       free_path = TRUE;
8909     }
8910   else if (iter == NULL)
8911     gtk_tree_model_get_iter (model, &real_iter, path);
8912
8913   if (_gtk_tree_view_find_node (tree_view,
8914                                 path,
8915                                 &tree,
8916                                 &node))
8917     /* We aren't actually showing the node */
8918     goto done;
8919
8920   if (tree == NULL)
8921     goto done;
8922
8923   has_child = gtk_tree_model_iter_has_child (model, &real_iter);
8924   /* Sanity check.
8925    */
8926   if (GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_PARENT) == has_child)
8927     goto done;
8928
8929   if (has_child)
8930     {
8931       GTK_RBNODE_SET_FLAG (node, GTK_RBNODE_IS_PARENT);
8932       _gtk_tree_view_accessible_add_state (tree_view, tree, node, GTK_CELL_RENDERER_EXPANDABLE);
8933     }
8934   else
8935     {
8936       GTK_RBNODE_UNSET_FLAG (node, GTK_RBNODE_IS_PARENT);
8937       _gtk_tree_view_accessible_remove_state (tree_view, tree, node, GTK_CELL_RENDERER_EXPANDABLE);
8938     }
8939
8940   if (has_child && tree_view->priv->is_list)
8941     {
8942       tree_view->priv->is_list = FALSE;
8943       if (tree_view->priv->show_expanders)
8944         {
8945           GList *list;
8946
8947           for (list = tree_view->priv->columns; list; list = list->next)
8948             if (gtk_tree_view_column_get_visible (GTK_TREE_VIEW_COLUMN (list->data)))
8949               {
8950                 _gtk_tree_view_column_cell_set_dirty (GTK_TREE_VIEW_COLUMN (list->data), TRUE);
8951                 break;
8952               }
8953         }
8954       gtk_widget_queue_resize (GTK_WIDGET (tree_view));
8955     }
8956   else
8957     {
8958       _gtk_tree_view_queue_draw_node (tree_view, tree, node, NULL);
8959     }
8960
8961  done:
8962   if (free_path)
8963     gtk_tree_path_free (path);
8964 }
8965
8966 static void
8967 count_children_helper (GtkRBTree *tree,
8968                        GtkRBNode *node,
8969                        gpointer   data)
8970 {
8971   if (node->children)
8972     _gtk_rbtree_traverse (node->children, node->children->root, G_POST_ORDER, count_children_helper, data);
8973   (*((gint *)data))++;
8974 }
8975
8976 static void
8977 check_selection_helper (GtkRBTree *tree,
8978                         GtkRBNode *node,
8979                         gpointer   data)
8980 {
8981   gint *value = (gint *)data;
8982
8983   *value |= GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_SELECTED);
8984
8985   if (node->children && !*value)
8986     _gtk_rbtree_traverse (node->children, node->children->root, G_POST_ORDER, check_selection_helper, data);
8987 }
8988
8989 static void
8990 gtk_tree_view_row_deleted (GtkTreeModel *model,
8991                            GtkTreePath  *path,
8992                            gpointer      data)
8993 {
8994   GtkTreeView *tree_view = (GtkTreeView *)data;
8995   GtkRBTree *tree;
8996   GtkRBNode *node;
8997   GList *list;
8998   gboolean selection_changed = FALSE, cursor_changed = FALSE;
8999   GtkRBTree *cursor_tree = NULL;
9000   GtkRBNode *cursor_node = NULL;
9001
9002   g_return_if_fail (path != NULL);
9003
9004   gtk_tree_row_reference_deleted (G_OBJECT (data), path);
9005
9006   if (_gtk_tree_view_find_node (tree_view, path, &tree, &node))
9007     return;
9008
9009   if (tree == NULL)
9010     return;
9011
9012   /* check if the selection has been changed */
9013   _gtk_rbtree_traverse (tree, node, G_POST_ORDER,
9014                         check_selection_helper, &selection_changed);
9015
9016   for (list = tree_view->priv->columns; list; list = list->next)
9017     if (gtk_tree_view_column_get_visible (GTK_TREE_VIEW_COLUMN (list->data)) &&
9018         gtk_tree_view_column_get_sizing (GTK_TREE_VIEW_COLUMN (list->data)) == GTK_TREE_VIEW_COLUMN_AUTOSIZE)
9019       _gtk_tree_view_column_cell_set_dirty ((GtkTreeViewColumn *)list->data, TRUE);
9020
9021   /* Ensure we don't have a dangling pointer to a dead node */
9022   ensure_unprelighted (tree_view);
9023
9024   /* Cancel editting if we've started */
9025   gtk_tree_view_stop_editing (tree_view, TRUE);
9026
9027   /* If the cursor row got deleted, move the cursor to the next row */
9028   if (tree_view->priv->cursor_node &&
9029       (tree_view->priv->cursor_node == node ||
9030        (node->children && (tree_view->priv->cursor_tree == node->children ||
9031                            _gtk_rbtree_contains (node->children, tree_view->priv->cursor_tree)))))
9032     {
9033       GtkTreePath *cursor_path;
9034
9035       cursor_tree = tree;
9036       cursor_node = _gtk_rbtree_next (tree, node);
9037       /* find the first node that is not going to be deleted */
9038       while (cursor_node == NULL && cursor_tree->parent_tree)
9039         {
9040           cursor_node = _gtk_rbtree_next (cursor_tree->parent_tree,
9041                                           cursor_tree->parent_node);
9042           cursor_tree = cursor_tree->parent_tree;
9043         }
9044
9045       if (cursor_node != NULL)
9046         cursor_path = _gtk_tree_path_new_from_rbtree (cursor_tree, cursor_node);
9047       else
9048         cursor_path = NULL;
9049
9050       if (cursor_path == NULL ||
9051           ! search_first_focusable_path (tree_view, &cursor_path, TRUE,
9052                                          &cursor_tree, &cursor_node))
9053         {
9054           /* It looks like we reached the end of the view without finding
9055            * a focusable row.  We will step backwards to find the last
9056            * focusable row.
9057            */
9058           _gtk_rbtree_prev_full (tree, node, &cursor_tree, &cursor_node);
9059           if (cursor_node)
9060             {
9061               cursor_path = _gtk_tree_path_new_from_rbtree (cursor_tree, cursor_node);
9062               if (! search_first_focusable_path (tree_view, &cursor_path, FALSE,
9063                                                  &cursor_tree, &cursor_node))
9064                 cursor_node = NULL;
9065               gtk_tree_path_free (cursor_path);
9066             }
9067         }
9068       else if (cursor_path)
9069         gtk_tree_path_free (cursor_path);
9070
9071       cursor_changed = TRUE;
9072     }
9073
9074   if (tree_view->priv->destroy_count_func)
9075     {
9076       gint child_count = 0;
9077       if (node->children)
9078         _gtk_rbtree_traverse (node->children, node->children->root, G_POST_ORDER, count_children_helper, &child_count);
9079       tree_view->priv->destroy_count_func (tree_view, path, child_count, tree_view->priv->destroy_count_data);
9080     }
9081
9082   if (tree->root->count == 1)
9083     {
9084       if (tree_view->priv->tree == tree)
9085         tree_view->priv->tree = NULL;
9086
9087       _gtk_tree_view_accessible_remove_state (tree_view,
9088                                               tree->parent_tree, tree->parent_node,
9089                                               GTK_CELL_RENDERER_EXPANDED);
9090       _gtk_tree_view_accessible_remove (tree_view, tree, NULL);
9091       _gtk_rbtree_remove (tree);
9092     }
9093   else
9094     {
9095       _gtk_tree_view_accessible_remove (tree_view, tree, node);
9096       _gtk_rbtree_remove_node (tree, node);
9097     }
9098
9099   if (! gtk_tree_row_reference_valid (tree_view->priv->top_row))
9100     {
9101       gtk_tree_row_reference_free (tree_view->priv->top_row);
9102       tree_view->priv->top_row = NULL;
9103     }
9104
9105   install_scroll_sync_handler (tree_view);
9106
9107   gtk_widget_queue_resize (GTK_WIDGET (tree_view));
9108
9109   if (cursor_changed)
9110     {
9111       if (cursor_node)
9112         {
9113           GtkTreePath *cursor_path = _gtk_tree_path_new_from_rbtree (cursor_tree, cursor_node);
9114           gtk_tree_view_real_set_cursor (tree_view, cursor_path, CLEAR_AND_SELECT | CURSOR_INVALID);
9115           gtk_tree_path_free (cursor_path);
9116         }
9117       else
9118         gtk_tree_view_real_set_cursor (tree_view, NULL, CLEAR_AND_SELECT | CURSOR_INVALID);
9119     }
9120   if (selection_changed)
9121     g_signal_emit_by_name (tree_view->priv->selection, "changed");
9122 }
9123
9124 static void
9125 gtk_tree_view_rows_reordered (GtkTreeModel *model,
9126                               GtkTreePath  *parent,
9127                               GtkTreeIter  *iter,
9128                               gint         *new_order,
9129                               gpointer      data)
9130 {
9131   GtkTreeView *tree_view = GTK_TREE_VIEW (data);
9132   GtkRBTree *tree;
9133   GtkRBNode *node;
9134   gint len;
9135
9136   len = gtk_tree_model_iter_n_children (model, iter);
9137
9138   if (len < 2)
9139     return;
9140
9141   gtk_tree_row_reference_reordered (G_OBJECT (data),
9142                                     parent,
9143                                     iter,
9144                                     new_order);
9145
9146   if (_gtk_tree_view_find_node (tree_view,
9147                                 parent,
9148                                 &tree,
9149                                 &node))
9150     return;
9151
9152   /* We need to special case the parent path */
9153   if (tree == NULL)
9154     tree = tree_view->priv->tree;
9155   else
9156     tree = node->children;
9157
9158   if (tree == NULL)
9159     return;
9160
9161   if (tree_view->priv->edited_column)
9162     gtk_tree_view_stop_editing (tree_view, TRUE);
9163
9164   /* we need to be unprelighted */
9165   ensure_unprelighted (tree_view);
9166
9167   _gtk_rbtree_reorder (tree, new_order, len);
9168
9169   _gtk_tree_view_accessible_reorder (tree_view);
9170
9171   gtk_widget_queue_draw (GTK_WIDGET (tree_view));
9172
9173   gtk_tree_view_dy_to_top_row (tree_view);
9174 }
9175
9176
9177 /* Internal tree functions
9178  */
9179
9180
9181 static void
9182 gtk_tree_view_get_background_xrange (GtkTreeView       *tree_view,
9183                                      GtkRBTree         *tree,
9184                                      GtkTreeViewColumn *column,
9185                                      gint              *x1,
9186                                      gint              *x2)
9187 {
9188   GtkTreeViewColumn *tmp_column = NULL;
9189   gint total_width;
9190   GList *list;
9191   gboolean rtl;
9192
9193   if (x1)
9194     *x1 = 0;
9195
9196   if (x2)
9197     *x2 = 0;
9198
9199   rtl = (gtk_widget_get_direction (GTK_WIDGET (tree_view)) == GTK_TEXT_DIR_RTL);
9200
9201   total_width = 0;
9202   for (list = (rtl ? g_list_last (tree_view->priv->columns) : g_list_first (tree_view->priv->columns));
9203        list;
9204        list = (rtl ? list->prev : list->next))
9205     {
9206       tmp_column = list->data;
9207
9208       if (tmp_column == column)
9209         break;
9210
9211       if (gtk_tree_view_column_get_visible (tmp_column))
9212         total_width += gtk_tree_view_column_get_width (tmp_column);
9213     }
9214
9215   if (tmp_column != column)
9216     {
9217       g_warning (G_STRLOC": passed-in column isn't in the tree");
9218       return;
9219     }
9220
9221   if (x1)
9222     *x1 = total_width;
9223
9224   if (x2)
9225     {
9226       if (gtk_tree_view_column_get_visible (column))
9227         *x2 = total_width + gtk_tree_view_column_get_width (column);
9228       else
9229         *x2 = total_width; /* width of 0 */
9230     }
9231 }
9232
9233 static void
9234 gtk_tree_view_get_arrow_xrange (GtkTreeView *tree_view,
9235                                 GtkRBTree   *tree,
9236                                 gint        *x1,
9237                                 gint        *x2)
9238 {
9239   gint x_offset = 0;
9240   GList *list;
9241   GtkTreeViewColumn *tmp_column = NULL;
9242   gint total_width;
9243   gint expander_size;
9244   gboolean indent_expanders;
9245   gboolean rtl;
9246
9247   rtl = (gtk_widget_get_direction (GTK_WIDGET (tree_view)) == GTK_TEXT_DIR_RTL);
9248   expander_size = gtk_tree_view_get_expander_size (tree_view);
9249
9250   total_width = 0;
9251   for (list = (rtl ? g_list_last (tree_view->priv->columns) : g_list_first (tree_view->priv->columns));
9252        list;
9253        list = (rtl ? list->prev : list->next))
9254     {
9255       tmp_column = list->data;
9256
9257       if (gtk_tree_view_is_expander_column (tree_view, tmp_column))
9258         {
9259           if (rtl)
9260             x_offset = total_width + gtk_tree_view_column_get_width (tmp_column) - expander_size;
9261           else
9262             x_offset = total_width;
9263           break;
9264         }
9265
9266       if (gtk_tree_view_column_get_visible (tmp_column))
9267         total_width += gtk_tree_view_column_get_width (tmp_column);
9268     }
9269
9270   gtk_widget_style_get (GTK_WIDGET (tree_view),
9271                         "indent-expanders", &indent_expanders,
9272                         NULL);
9273
9274   if (indent_expanders)
9275     {
9276       if (rtl)
9277         x_offset -= expander_size * _gtk_rbtree_get_depth (tree);
9278       else
9279         x_offset += expander_size * _gtk_rbtree_get_depth (tree);
9280     }
9281
9282   *x1 = x_offset;
9283
9284   if (tmp_column &&
9285       gtk_tree_view_column_get_visible (tmp_column))
9286     /* +1 because x2 isn't included in the range. */
9287     *x2 = *x1 + expander_size + 1;
9288   else
9289     *x2 = *x1;
9290 }
9291
9292 static void
9293 gtk_tree_view_build_tree (GtkTreeView *tree_view,
9294                           GtkRBTree   *tree,
9295                           GtkTreeIter *iter,
9296                           gint         depth,
9297                           gboolean     recurse)
9298 {
9299   GtkRBNode *temp = NULL;
9300   GtkTreePath *path = NULL;
9301
9302   do
9303     {
9304       gtk_tree_model_ref_node (tree_view->priv->model, iter);
9305       temp = _gtk_rbtree_insert_after (tree, temp, 0, FALSE);
9306
9307       if (tree_view->priv->fixed_height > 0)
9308         {
9309           if (GTK_RBNODE_FLAG_SET (temp, GTK_RBNODE_INVALID))
9310             {
9311               _gtk_rbtree_node_set_height (tree, temp, tree_view->priv->fixed_height);
9312               _gtk_rbtree_node_mark_valid (tree, temp);
9313             }
9314         }
9315
9316       if (tree_view->priv->is_list)
9317         continue;
9318
9319       if (recurse)
9320         {
9321           GtkTreeIter child;
9322
9323           if (!path)
9324             path = gtk_tree_model_get_path (tree_view->priv->model, iter);
9325           else
9326             gtk_tree_path_next (path);
9327
9328           if (gtk_tree_model_iter_children (tree_view->priv->model, &child, iter))
9329             {
9330               gboolean expand;
9331
9332               g_signal_emit (tree_view, tree_view_signals[TEST_EXPAND_ROW], 0, iter, path, &expand);
9333
9334               if (gtk_tree_model_iter_has_child (tree_view->priv->model, iter)
9335                   && !expand)
9336                 {
9337                   temp->children = _gtk_rbtree_new ();
9338                   temp->children->parent_tree = tree;
9339                   temp->children->parent_node = temp;
9340                   gtk_tree_view_build_tree (tree_view, temp->children, &child, depth + 1, recurse);
9341                 }
9342             }
9343         }
9344
9345       if (gtk_tree_model_iter_has_child (tree_view->priv->model, iter))
9346         {
9347           if ((temp->flags&GTK_RBNODE_IS_PARENT) != GTK_RBNODE_IS_PARENT)
9348             temp->flags ^= GTK_RBNODE_IS_PARENT;
9349         }
9350     }
9351   while (gtk_tree_model_iter_next (tree_view->priv->model, iter));
9352
9353   if (path)
9354     gtk_tree_path_free (path);
9355 }
9356
9357 /* Make sure the node is visible vertically */
9358 static void
9359 gtk_tree_view_clamp_node_visible (GtkTreeView *tree_view,
9360                                   GtkRBTree   *tree,
9361                                   GtkRBNode   *node)
9362 {
9363   gint node_dy, height;
9364   GtkTreePath *path = NULL;
9365
9366   if (!gtk_widget_get_realized (GTK_WIDGET (tree_view)))
9367     return;
9368
9369   /* just return if the node is visible, avoiding a costly expose */
9370   node_dy = _gtk_rbtree_node_find_offset (tree, node);
9371   height = gtk_tree_view_get_row_height (tree_view, node);
9372   if (! GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_INVALID)
9373       && node_dy >= gtk_adjustment_get_value (tree_view->priv->vadjustment)
9374       && node_dy + height <= (gtk_adjustment_get_value (tree_view->priv->vadjustment)
9375                               + gtk_adjustment_get_page_size (tree_view->priv->vadjustment)))
9376     return;
9377
9378   path = _gtk_tree_path_new_from_rbtree (tree, node);
9379   if (path)
9380     {
9381       gtk_tree_view_scroll_to_cell (tree_view, path, NULL, FALSE, 0.0, 0.0);
9382       gtk_tree_path_free (path);
9383     }
9384 }
9385
9386 static void
9387 gtk_tree_view_clamp_column_visible (GtkTreeView       *tree_view,
9388                                     GtkTreeViewColumn *column,
9389                                     gboolean           focus_to_cell)
9390 {
9391   GtkAllocation allocation;
9392   gint x, width;
9393
9394   if (column == NULL)
9395     return;
9396
9397   gtk_widget_get_allocation (gtk_tree_view_column_get_button (column), &allocation);
9398   x = allocation.x;
9399   width = allocation.width;
9400
9401   if (width > gtk_adjustment_get_page_size (tree_view->priv->hadjustment))
9402     {
9403       /* The column is larger than the horizontal page size.  If the
9404        * column has cells which can be focussed individually, then we make
9405        * sure the cell which gets focus is fully visible (if even the
9406        * focus cell is bigger than the page size, we make sure the
9407        * left-hand side of the cell is visible).
9408        *
9409        * If the column does not have an activatable cell, we
9410        * make sure the left-hand side of the column is visible.
9411        */
9412
9413       if (focus_to_cell && gtk_tree_view_has_can_focus_cell (tree_view))
9414         {
9415           GtkCellArea *cell_area;
9416           GtkCellRenderer *focus_cell;
9417
9418           cell_area = gtk_cell_layout_get_area (GTK_CELL_LAYOUT (column));
9419           focus_cell = gtk_cell_area_get_focus_cell (cell_area);
9420
9421           if (gtk_tree_view_column_cell_get_position (column, focus_cell,
9422                                                       &x, &width))
9423             {
9424               if (width < gtk_adjustment_get_page_size (tree_view->priv->hadjustment))
9425                 {
9426                   if (gtk_adjustment_get_value (tree_view->priv->hadjustment) + gtk_adjustment_get_page_size (tree_view->priv->hadjustment) < x + width)
9427                     gtk_adjustment_set_value (tree_view->priv->hadjustment,
9428                                               x + width - gtk_adjustment_get_page_size (tree_view->priv->hadjustment));
9429                   else if (gtk_adjustment_get_value (tree_view->priv->hadjustment) > x)
9430                     gtk_adjustment_set_value (tree_view->priv->hadjustment, x);
9431                 }
9432             }
9433         }
9434
9435       gtk_adjustment_set_value (tree_view->priv->hadjustment, x);
9436     }
9437   else
9438     {
9439       if ((gtk_adjustment_get_value (tree_view->priv->hadjustment) + gtk_adjustment_get_page_size (tree_view->priv->hadjustment)) < (x + width))
9440           gtk_adjustment_set_value (tree_view->priv->hadjustment,
9441                                     x + width - gtk_adjustment_get_page_size (tree_view->priv->hadjustment));
9442       else if (gtk_adjustment_get_value (tree_view->priv->hadjustment) > x)
9443         gtk_adjustment_set_value (tree_view->priv->hadjustment, x);
9444   }
9445 }
9446
9447 /* This function could be more efficient.  I'll optimize it if profiling seems
9448  * to imply that it is important */
9449 GtkTreePath *
9450 _gtk_tree_path_new_from_rbtree (GtkRBTree   *tree,
9451                                 GtkRBNode   *node)
9452 {
9453   GtkTreePath *path;
9454   GtkRBTree *tmp_tree;
9455   GtkRBNode *tmp_node, *last;
9456   gint count;
9457
9458   path = gtk_tree_path_new ();
9459
9460   g_return_val_if_fail (node != NULL, path);
9461
9462   count = 1 + node->left->count;
9463
9464   last = node;
9465   tmp_node = node->parent;
9466   tmp_tree = tree;
9467   while (tmp_tree)
9468     {
9469       while (!_gtk_rbtree_is_nil (tmp_node))
9470         {
9471           if (tmp_node->right == last)
9472             count += 1 + tmp_node->left->count;
9473           last = tmp_node;
9474           tmp_node = tmp_node->parent;
9475         }
9476       gtk_tree_path_prepend_index (path, count - 1);
9477       last = tmp_tree->parent_node;
9478       tmp_tree = tmp_tree->parent_tree;
9479       if (last)
9480         {
9481           count = 1 + last->left->count;
9482           tmp_node = last->parent;
9483         }
9484     }
9485   return path;
9486 }
9487
9488 /* Returns TRUE if we ran out of tree before finding the path.  If the path is
9489  * invalid (ie. points to a node that's not in the tree), *tree and *node are
9490  * both set to NULL.
9491  */
9492 gboolean
9493 _gtk_tree_view_find_node (GtkTreeView  *tree_view,
9494                           GtkTreePath  *path,
9495                           GtkRBTree   **tree,
9496                           GtkRBNode   **node)
9497 {
9498   GtkRBNode *tmpnode = NULL;
9499   GtkRBTree *tmptree = tree_view->priv->tree;
9500   gint *indices = gtk_tree_path_get_indices (path);
9501   gint depth = gtk_tree_path_get_depth (path);
9502   gint i = 0;
9503
9504   *node = NULL;
9505   *tree = NULL;
9506
9507   if (depth == 0 || tmptree == NULL)
9508     return FALSE;
9509   do
9510     {
9511       tmpnode = _gtk_rbtree_find_count (tmptree, indices[i] + 1);
9512       ++i;
9513       if (tmpnode == NULL)
9514         {
9515           *tree = NULL;
9516           *node = NULL;
9517           return FALSE;
9518         }
9519       if (i >= depth)
9520         {
9521           *tree = tmptree;
9522           *node = tmpnode;
9523           return FALSE;
9524         }
9525       *tree = tmptree;
9526       *node = tmpnode;
9527       tmptree = tmpnode->children;
9528       if (tmptree == NULL)
9529         return TRUE;
9530     }
9531   while (1);
9532 }
9533
9534 static gboolean
9535 gtk_tree_view_is_expander_column (GtkTreeView       *tree_view,
9536                                   GtkTreeViewColumn *column)
9537 {
9538   GList *list;
9539
9540   if (tree_view->priv->is_list)
9541     return FALSE;
9542
9543   if (tree_view->priv->expander_column != NULL)
9544     {
9545       if (tree_view->priv->expander_column == column)
9546         return TRUE;
9547       return FALSE;
9548     }
9549   else
9550     {
9551       for (list = tree_view->priv->columns;
9552            list;
9553            list = list->next)
9554         if (gtk_tree_view_column_get_visible (GTK_TREE_VIEW_COLUMN (list->data)))
9555           break;
9556       if (list && list->data == column)
9557         return TRUE;
9558     }
9559   return FALSE;
9560 }
9561
9562 static inline gboolean
9563 gtk_tree_view_draw_expanders (GtkTreeView *tree_view)
9564 {
9565   if (!tree_view->priv->is_list && tree_view->priv->show_expanders)
9566     return TRUE;
9567   /* else */
9568   return FALSE;
9569 }
9570
9571 static void
9572 gtk_tree_view_add_move_binding (GtkBindingSet  *binding_set,
9573                                 guint           keyval,
9574                                 guint           modmask,
9575                                 gboolean        add_shifted_binding,
9576                                 GtkMovementStep step,
9577                                 gint            count)
9578 {
9579
9580   gtk_binding_entry_add_signal (binding_set, keyval, modmask,
9581                                 "move-cursor", 2,
9582                                 G_TYPE_ENUM, step,
9583                                 G_TYPE_INT, count);
9584
9585   if (add_shifted_binding)
9586     gtk_binding_entry_add_signal (binding_set, keyval, GDK_SHIFT_MASK,
9587                                   "move-cursor", 2,
9588                                   G_TYPE_ENUM, step,
9589                                   G_TYPE_INT, count);
9590
9591   if ((modmask & GDK_CONTROL_MASK) == GDK_CONTROL_MASK)
9592    return;
9593
9594   gtk_binding_entry_add_signal (binding_set, keyval, GDK_CONTROL_MASK | GDK_SHIFT_MASK,
9595                                 "move-cursor", 2,
9596                                 G_TYPE_ENUM, step,
9597                                 G_TYPE_INT, count);
9598
9599   gtk_binding_entry_add_signal (binding_set, keyval, GDK_CONTROL_MASK,
9600                                 "move-cursor", 2,
9601                                 G_TYPE_ENUM, step,
9602                                 G_TYPE_INT, count);
9603 }
9604
9605 static gint
9606 gtk_tree_view_unref_tree_helper (GtkTreeModel *model,
9607                                  GtkTreeIter  *iter,
9608                                  GtkRBTree    *tree,
9609                                  GtkRBNode    *node)
9610 {
9611   gint retval = FALSE;
9612   do
9613     {
9614       g_return_val_if_fail (node != NULL, FALSE);
9615
9616       if (node->children)
9617         {
9618           GtkTreeIter child;
9619           GtkRBTree *new_tree;
9620           GtkRBNode *new_node;
9621
9622           new_tree = node->children;
9623           new_node = _gtk_rbtree_first (new_tree);
9624
9625           if (!gtk_tree_model_iter_children (model, &child, iter))
9626             return FALSE;
9627
9628           retval = gtk_tree_view_unref_tree_helper (model, &child, new_tree, new_node) | retval;
9629         }
9630
9631       if (GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_SELECTED))
9632         retval = TRUE;
9633       gtk_tree_model_unref_node (model, iter);
9634       node = _gtk_rbtree_next (tree, node);
9635     }
9636   while (gtk_tree_model_iter_next (model, iter));
9637
9638   return retval;
9639 }
9640
9641 static gint
9642 gtk_tree_view_unref_and_check_selection_tree (GtkTreeView *tree_view,
9643                                               GtkRBTree   *tree)
9644 {
9645   GtkTreeIter iter;
9646   GtkTreePath *path;
9647   GtkRBNode *node;
9648   gint retval;
9649
9650   if (!tree)
9651     return FALSE;
9652
9653   node = _gtk_rbtree_first (tree);
9654
9655   g_return_val_if_fail (node != NULL, FALSE);
9656   path = _gtk_tree_path_new_from_rbtree (tree, node);
9657   gtk_tree_model_get_iter (GTK_TREE_MODEL (tree_view->priv->model),
9658                            &iter, path);
9659   retval = gtk_tree_view_unref_tree_helper (GTK_TREE_MODEL (tree_view->priv->model), &iter, tree, node);
9660   gtk_tree_path_free (path);
9661
9662   return retval;
9663 }
9664
9665 static void
9666 gtk_tree_view_set_column_drag_info (GtkTreeView       *tree_view,
9667                                     GtkTreeViewColumn *column)
9668 {
9669   GtkTreeViewColumn *left_column;
9670   GtkTreeViewColumn *cur_column = NULL;
9671   GtkTreeViewColumnReorder *reorder;
9672   gboolean rtl;
9673   GList *tmp_list;
9674   gint left;
9675
9676   /* We want to precalculate the motion list such that we know what column slots
9677    * are available.
9678    */
9679   left_column = NULL;
9680   rtl = (gtk_widget_get_direction (GTK_WIDGET (tree_view)) == GTK_TEXT_DIR_RTL);
9681
9682   /* First, identify all possible drop spots */
9683   if (rtl)
9684     tmp_list = g_list_last (tree_view->priv->columns);
9685   else
9686     tmp_list = g_list_first (tree_view->priv->columns);
9687
9688   while (tmp_list)
9689     {
9690       cur_column = GTK_TREE_VIEW_COLUMN (tmp_list->data);
9691       tmp_list = rtl?g_list_previous (tmp_list):g_list_next (tmp_list);
9692
9693       if (gtk_tree_view_column_get_visible (cur_column) == FALSE)
9694         continue;
9695
9696       /* If it's not the column moving and func tells us to skip over the column, we continue. */
9697       if (left_column != column && cur_column != column &&
9698           tree_view->priv->column_drop_func &&
9699           ! tree_view->priv->column_drop_func (tree_view, column, left_column, cur_column, tree_view->priv->column_drop_func_data))
9700         {
9701           left_column = cur_column;
9702           continue;
9703         }
9704       reorder = g_slice_new0 (GtkTreeViewColumnReorder);
9705       reorder->left_column = left_column;
9706       left_column = reorder->right_column = cur_column;
9707
9708       tree_view->priv->column_drag_info = g_list_append (tree_view->priv->column_drag_info, reorder);
9709     }
9710
9711   /* Add the last one */
9712   if (tree_view->priv->column_drop_func == NULL ||
9713       ((left_column != column) &&
9714        tree_view->priv->column_drop_func (tree_view, column, left_column, NULL, tree_view->priv->column_drop_func_data)))
9715     {
9716       reorder = g_slice_new0 (GtkTreeViewColumnReorder);
9717       reorder->left_column = left_column;
9718       reorder->right_column = NULL;
9719       tree_view->priv->column_drag_info = g_list_append (tree_view->priv->column_drag_info, reorder);
9720     }
9721
9722   /* We quickly check to see if it even makes sense to reorder columns. */
9723   /* If there is nothing that can be moved, then we return */
9724
9725   if (tree_view->priv->column_drag_info == NULL)
9726     return;
9727
9728   /* We know there are always 2 slots possbile, as you can always return column. */
9729   /* If that's all there is, return */
9730   if (tree_view->priv->column_drag_info->next == NULL ||
9731       (tree_view->priv->column_drag_info->next->next == NULL &&
9732        ((GtkTreeViewColumnReorder *)tree_view->priv->column_drag_info->data)->right_column == column &&
9733        ((GtkTreeViewColumnReorder *)tree_view->priv->column_drag_info->next->data)->left_column == column))
9734     {
9735       for (tmp_list = tree_view->priv->column_drag_info; tmp_list; tmp_list = tmp_list->next)
9736         g_slice_free (GtkTreeViewColumnReorder, tmp_list->data);
9737       g_list_free (tree_view->priv->column_drag_info);
9738       tree_view->priv->column_drag_info = NULL;
9739       return;
9740     }
9741   /* We fill in the ranges for the columns, now that we've isolated them */
9742   left = - TREE_VIEW_COLUMN_DRAG_DEAD_MULTIPLIER (tree_view);
9743
9744   for (tmp_list = tree_view->priv->column_drag_info; tmp_list; tmp_list = tmp_list->next)
9745     {
9746       reorder = (GtkTreeViewColumnReorder *) tmp_list->data;
9747
9748       reorder->left_align = left;
9749       if (tmp_list->next != NULL)
9750         {
9751           GtkAllocation right_allocation, left_allocation;
9752           GtkWidget    *left_button, *right_button;
9753
9754           g_assert (tmp_list->next->data);
9755
9756           right_button = gtk_tree_view_column_get_button (reorder->right_column);
9757           left_button  = gtk_tree_view_column_get_button
9758             (((GtkTreeViewColumnReorder *)tmp_list->next->data)->left_column);
9759
9760           gtk_widget_get_allocation (right_button, &right_allocation);
9761           gtk_widget_get_allocation (left_button, &left_allocation);
9762           left = reorder->right_align = (right_allocation.x + right_allocation.width + left_allocation.x) / 2;
9763         }
9764       else
9765         {
9766           reorder->right_align = gdk_window_get_width (tree_view->priv->header_window)
9767                                  + TREE_VIEW_COLUMN_DRAG_DEAD_MULTIPLIER (tree_view);
9768         }
9769     }
9770 }
9771
9772 void
9773 _gtk_tree_view_column_start_drag (GtkTreeView       *tree_view,
9774                                   GtkTreeViewColumn *column,
9775                                   GdkDevice         *device)
9776 {
9777   GdkEvent *send_event;
9778   GtkAllocation allocation;
9779   GtkAllocation button_allocation;
9780   GdkScreen *screen = gtk_widget_get_screen (GTK_WIDGET (tree_view));
9781   GtkWidget *button;
9782   GdkDevice *pointer, *keyboard;
9783   GdkWindowAttr attributes;
9784   guint attributes_mask;
9785   GtkStyleContext *context;
9786
9787   g_return_if_fail (tree_view->priv->column_drag_info == NULL);
9788   g_return_if_fail (tree_view->priv->cur_reorder == NULL);
9789   g_return_if_fail (tree_view->priv->drag_window == NULL);
9790
9791   gtk_tree_view_set_column_drag_info (tree_view, column);
9792
9793   if (tree_view->priv->column_drag_info == NULL)
9794     return;
9795
9796   button = gtk_tree_view_column_get_button (column);
9797
9798   context = gtk_widget_get_style_context (button);
9799   gtk_style_context_add_class (context, GTK_STYLE_CLASS_DND);
9800
9801   gtk_widget_get_allocation (button, &button_allocation);
9802
9803   attributes.window_type = GDK_WINDOW_CHILD;
9804   attributes.wclass = GDK_INPUT_OUTPUT;
9805   attributes.x = button_allocation.x;
9806   attributes.y = 0;
9807   attributes.width = button_allocation.width;
9808   attributes.height = button_allocation.height;
9809   attributes.visual = gtk_widget_get_visual (GTK_WIDGET (tree_view));
9810   attributes.event_mask = GDK_VISIBILITY_NOTIFY_MASK | GDK_EXPOSURE_MASK | GDK_POINTER_MOTION_MASK;
9811   attributes_mask = GDK_WA_X | GDK_WA_Y | GDK_WA_VISUAL;
9812
9813   tree_view->priv->drag_window = gdk_window_new (tree_view->priv->header_window,
9814                                                  &attributes,
9815                                                  attributes_mask);
9816   gtk_widget_register_window (GTK_WIDGET (tree_view), tree_view->priv->drag_window);
9817
9818   if (gdk_device_get_source (device) == GDK_SOURCE_KEYBOARD)
9819     {
9820       keyboard = device;
9821       pointer = gdk_device_get_associated_device (device);
9822     }
9823   else
9824     {
9825       pointer = device;
9826       keyboard = gdk_device_get_associated_device (device);
9827     }
9828
9829   gdk_device_ungrab (pointer, GDK_CURRENT_TIME);
9830   gdk_device_ungrab (keyboard, GDK_CURRENT_TIME);
9831
9832   gtk_grab_remove (button);
9833
9834   send_event = gdk_event_new (GDK_LEAVE_NOTIFY);
9835   send_event->crossing.send_event = TRUE;
9836   send_event->crossing.window = g_object_ref (gtk_button_get_event_window (GTK_BUTTON (button)));
9837   send_event->crossing.subwindow = NULL;
9838   send_event->crossing.detail = GDK_NOTIFY_ANCESTOR;
9839   send_event->crossing.time = GDK_CURRENT_TIME;
9840   gdk_event_set_device (send_event, device);
9841
9842   gtk_propagate_event (button, send_event);
9843   gdk_event_free (send_event);
9844
9845   send_event = gdk_event_new (GDK_BUTTON_RELEASE);
9846   send_event->button.window = g_object_ref (gdk_screen_get_root_window (screen));
9847   send_event->button.send_event = TRUE;
9848   send_event->button.time = GDK_CURRENT_TIME;
9849   send_event->button.x = -1;
9850   send_event->button.y = -1;
9851   send_event->button.axes = NULL;
9852   send_event->button.state = 0;
9853   send_event->button.button = GDK_BUTTON_PRIMARY;
9854   send_event->button.x_root = 0;
9855   send_event->button.y_root = 0;
9856   gdk_event_set_device (send_event, device);
9857
9858   gtk_propagate_event (button, send_event);
9859   gdk_event_free (send_event);
9860
9861   /* Kids, don't try this at home */
9862   g_object_ref (button);
9863   gtk_container_remove (GTK_CONTAINER (tree_view), button);
9864   gtk_widget_set_parent_window (button, tree_view->priv->drag_window);
9865   gtk_widget_set_parent (button, GTK_WIDGET (tree_view));
9866   g_object_unref (button);
9867
9868   gtk_widget_get_allocation (button, &button_allocation);
9869   tree_view->priv->drag_column_x = button_allocation.x;
9870   allocation = button_allocation;
9871   allocation.x = 0;
9872   gtk_widget_size_allocate (button, &allocation);
9873   gtk_widget_set_parent_window (button, tree_view->priv->drag_window);
9874
9875   tree_view->priv->drag_column = column;
9876   gdk_window_show (tree_view->priv->drag_window);
9877
9878   gtk_widget_grab_focus (GTK_WIDGET (tree_view));
9879   while (gtk_events_pending ())
9880     gtk_main_iteration ();
9881
9882   tree_view->priv->in_column_drag = TRUE;
9883
9884   gdk_device_grab (pointer,
9885                    tree_view->priv->drag_window,
9886                    GDK_OWNERSHIP_NONE,
9887                    FALSE,
9888                    GDK_POINTER_MOTION_MASK|GDK_BUTTON_RELEASE_MASK,
9889                    NULL,
9890                    GDK_CURRENT_TIME);
9891   gdk_device_grab (keyboard,
9892                    tree_view->priv->drag_window,
9893                    GDK_OWNERSHIP_NONE,
9894                    FALSE,
9895                    GDK_KEY_PRESS_MASK|GDK_KEY_RELEASE_MASK,
9896                    NULL,
9897                    GDK_CURRENT_TIME);
9898 }
9899
9900 static void
9901 gtk_tree_view_queue_draw_arrow (GtkTreeView        *tree_view,
9902                                 GtkRBTree          *tree,
9903                                 GtkRBNode          *node)
9904 {
9905   GtkAllocation allocation;
9906   GdkRectangle rect;
9907
9908   if (!gtk_widget_get_realized (GTK_WIDGET (tree_view)))
9909     return;
9910
9911   gtk_widget_get_allocation (GTK_WIDGET (tree_view), &allocation);
9912   rect.x = 0;
9913   rect.width = gtk_tree_view_get_expander_size (tree_view);
9914   rect.width = MAX (rect.width, MAX (tree_view->priv->width, allocation.width));
9915
9916   rect.y = gtk_tree_view_get_row_y_offset (tree_view, tree, node);
9917   rect.height = gtk_tree_view_get_row_height (tree_view, node);
9918
9919   gdk_window_invalidate_rect (tree_view->priv->bin_window, &rect, TRUE);
9920 }
9921
9922 void
9923 _gtk_tree_view_queue_draw_node (GtkTreeView        *tree_view,
9924                                 GtkRBTree          *tree,
9925                                 GtkRBNode          *node,
9926                                 const GdkRectangle *clip_rect)
9927 {
9928   GtkAllocation allocation;
9929   GdkRectangle rect;
9930
9931   if (!gtk_widget_get_realized (GTK_WIDGET (tree_view)))
9932     return;
9933
9934   gtk_widget_get_allocation (GTK_WIDGET (tree_view), &allocation);
9935   rect.x = 0;
9936   rect.width = MAX (tree_view->priv->width, allocation.width);
9937
9938   rect.y = gtk_tree_view_get_row_y_offset (tree_view, tree, node);
9939   rect.height = gtk_tree_view_get_row_height (tree_view, node);
9940
9941   if (clip_rect)
9942     {
9943       GdkRectangle new_rect;
9944
9945       gdk_rectangle_intersect (clip_rect, &rect, &new_rect);
9946
9947       gdk_window_invalidate_rect (tree_view->priv->bin_window, &new_rect, TRUE);
9948     }
9949   else
9950     {
9951       gdk_window_invalidate_rect (tree_view->priv->bin_window, &rect, TRUE);
9952     }
9953 }
9954
9955 static inline gint
9956 gtk_tree_view_get_effective_header_height (GtkTreeView *tree_view)
9957 {
9958   if (tree_view->priv->headers_visible)
9959     return tree_view->priv->header_height;
9960   /* else */
9961   return 0;
9962 }
9963
9964 gint
9965 _gtk_tree_view_get_header_height (GtkTreeView *tree_view)
9966 {
9967   return tree_view->priv->header_height;
9968 }
9969
9970 void
9971 _gtk_tree_view_get_row_separator_func (GtkTreeView                 *tree_view,
9972                                        GtkTreeViewRowSeparatorFunc *func,
9973                                        gpointer                    *data)
9974 {
9975   *func = tree_view->priv->row_separator_func;
9976   *data = tree_view->priv->row_separator_data;
9977 }
9978
9979 GtkTreePath *
9980 _gtk_tree_view_get_anchor_path (GtkTreeView *tree_view)
9981 {
9982   if (tree_view->priv->anchor)
9983     return gtk_tree_row_reference_get_path (tree_view->priv->anchor);
9984
9985   return NULL;
9986 }
9987
9988 void
9989 _gtk_tree_view_set_anchor_path (GtkTreeView *tree_view,
9990                                 GtkTreePath *anchor_path)
9991 {
9992   if (tree_view->priv->anchor)
9993     {
9994       gtk_tree_row_reference_free (tree_view->priv->anchor);
9995       tree_view->priv->anchor = NULL;
9996     }
9997
9998   if (anchor_path && tree_view->priv->model)
9999     tree_view->priv->anchor =
10000       gtk_tree_row_reference_new_proxy (G_OBJECT (tree_view),
10001                                         tree_view->priv->model, anchor_path);
10002 }
10003
10004 GtkRBTree *
10005 _gtk_tree_view_get_rbtree (GtkTreeView *tree_view)
10006 {
10007   return tree_view->priv->tree;
10008 }
10009
10010 gboolean
10011 _gtk_tree_view_get_cursor_node (GtkTreeView  *tree_view,
10012                                 GtkRBTree   **tree,
10013                                 GtkRBNode   **node)
10014 {
10015   GtkTreeViewPrivate *priv;
10016
10017   priv = tree_view->priv;
10018
10019   if (priv->cursor_node == NULL)
10020     return FALSE;
10021
10022   *tree = priv->cursor_tree;
10023   *node = priv->cursor_node;
10024
10025   return TRUE;
10026 }
10027
10028 GdkWindow *
10029 _gtk_tree_view_get_header_window (GtkTreeView *tree_view)
10030 {
10031   return tree_view->priv->header_window;
10032 }
10033
10034 GtkTreeViewColumn *
10035 _gtk_tree_view_get_focus_column (GtkTreeView *tree_view)
10036 {
10037   return tree_view->priv->focus_column;
10038 }
10039
10040 void
10041 _gtk_tree_view_set_focus_column (GtkTreeView       *tree_view,
10042                                  GtkTreeViewColumn *column)
10043 {
10044   GtkTreeViewColumn *old_column = tree_view->priv->focus_column;
10045
10046   if (old_column == column)
10047     return;
10048
10049   tree_view->priv->focus_column = column;
10050
10051   _gtk_tree_view_accessible_update_focus_column (tree_view,
10052                                                  old_column,
10053                                                  column);
10054 }
10055
10056
10057 static void
10058 gtk_tree_view_queue_draw_path (GtkTreeView        *tree_view,
10059                                GtkTreePath        *path,
10060                                const GdkRectangle *clip_rect)
10061 {
10062   GtkRBTree *tree = NULL;
10063   GtkRBNode *node = NULL;
10064
10065   _gtk_tree_view_find_node (tree_view, path, &tree, &node);
10066
10067   if (tree)
10068     _gtk_tree_view_queue_draw_node (tree_view, tree, node, clip_rect);
10069 }
10070
10071 /* x and y are the mouse position
10072  */
10073 static void
10074 gtk_tree_view_draw_arrow (GtkTreeView *tree_view,
10075                           cairo_t     *cr,
10076                           GtkRBTree   *tree,
10077                           GtkRBNode   *node)
10078 {
10079   GdkRectangle area;
10080   GtkStateFlags state = 0;
10081   GtkStyleContext *context;
10082   GtkWidget *widget;
10083   gint x_offset = 0;
10084   gint x2;
10085   gint vertical_separator;
10086   gint expander_size;
10087   GtkCellRendererState flags = 0;
10088
10089   widget = GTK_WIDGET (tree_view);
10090   context = gtk_widget_get_style_context (widget);
10091
10092   gtk_widget_style_get (widget,
10093                         "vertical-separator", &vertical_separator,
10094                         NULL);
10095   expander_size = gtk_tree_view_get_expander_size (tree_view) - EXPANDER_EXTRA_PADDING;
10096
10097   if (! GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_PARENT))
10098     return;
10099
10100   gtk_tree_view_get_arrow_xrange (tree_view, tree, &x_offset, &x2);
10101
10102   area.x = x_offset;
10103   area.y = gtk_tree_view_get_cell_area_y_offset (tree_view, tree, node,
10104                                                  vertical_separator);
10105   area.width = expander_size;
10106   area.height = gtk_tree_view_get_cell_area_height (tree_view, node,
10107                                                     vertical_separator);
10108
10109   if (GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_SELECTED))
10110     flags |= GTK_CELL_RENDERER_SELECTED;
10111
10112   if (node == tree_view->priv->prelight_node &&
10113       tree_view->priv->arrow_prelit)
10114     flags |= GTK_CELL_RENDERER_PRELIT;
10115
10116   state = gtk_cell_renderer_get_state (NULL, widget, flags);
10117
10118   if (node->children != NULL)
10119     state |= GTK_STATE_FLAG_ACTIVE;
10120   else
10121     state &= ~(GTK_STATE_FLAG_ACTIVE);
10122
10123   gtk_style_context_save (context);
10124
10125   gtk_style_context_set_state (context, state);
10126   gtk_style_context_add_class (context, GTK_STYLE_CLASS_EXPANDER);
10127
10128   gtk_render_expander (context, cr,
10129                        area.x, area.y,
10130                        area.width, area.height);
10131
10132   gtk_style_context_restore (context);
10133 }
10134
10135 static void
10136 gtk_tree_view_focus_to_cursor (GtkTreeView *tree_view)
10137
10138 {
10139   GtkTreePath *cursor_path;
10140
10141   if ((tree_view->priv->tree == NULL) ||
10142       (! gtk_widget_get_realized (GTK_WIDGET (tree_view))))
10143     return;
10144
10145   cursor_path = NULL;
10146   if (tree_view->priv->cursor_node)
10147     cursor_path = _gtk_tree_path_new_from_rbtree (tree_view->priv->cursor_tree,
10148                                                   tree_view->priv->cursor_node);
10149
10150   if (cursor_path == NULL)
10151     {
10152       /* Consult the selection before defaulting to the
10153        * first focusable element
10154        */
10155       GList *selected_rows;
10156       GtkTreeModel *model;
10157       GtkTreeSelection *selection;
10158
10159       selection = gtk_tree_view_get_selection (tree_view);
10160       selected_rows = gtk_tree_selection_get_selected_rows (selection, &model);
10161
10162       if (selected_rows)
10163         {
10164           cursor_path = gtk_tree_path_copy((const GtkTreePath *)(selected_rows->data));
10165           g_list_free_full (selected_rows, (GDestroyNotify) gtk_tree_path_free);
10166         }
10167       else
10168         {
10169           cursor_path = gtk_tree_path_new_first ();
10170           search_first_focusable_path (tree_view, &cursor_path,
10171                                        TRUE, NULL, NULL);
10172         }
10173
10174       if (cursor_path)
10175         {
10176           if (gtk_tree_selection_get_mode (tree_view->priv->selection) == GTK_SELECTION_MULTIPLE)
10177             gtk_tree_view_real_set_cursor (tree_view, cursor_path, 0);
10178           else
10179             gtk_tree_view_real_set_cursor (tree_view, cursor_path, CLEAR_AND_SELECT);
10180         }
10181     }
10182
10183   if (cursor_path)
10184     {
10185       tree_view->priv->draw_keyfocus = TRUE;
10186
10187       gtk_tree_view_queue_draw_path (tree_view, cursor_path, NULL);
10188       gtk_tree_path_free (cursor_path);
10189
10190       if (tree_view->priv->focus_column == NULL)
10191         {
10192           GList *list;
10193           for (list = tree_view->priv->columns; list; list = list->next)
10194             {
10195               if (gtk_tree_view_column_get_visible (GTK_TREE_VIEW_COLUMN (list->data)))
10196                 {
10197                   GtkCellArea *cell_area;
10198
10199                   _gtk_tree_view_set_focus_column (tree_view, GTK_TREE_VIEW_COLUMN (list->data));
10200
10201                   /* This happens when the treeview initially grabs focus and there
10202                    * is no column in focus, here we explicitly focus into the first cell */
10203                   cell_area = gtk_cell_layout_get_area (GTK_CELL_LAYOUT (tree_view->priv->focus_column));
10204                   if (!gtk_cell_area_get_focus_cell (cell_area))
10205                     {
10206                       gboolean rtl;
10207
10208                       rtl = (gtk_widget_get_direction (GTK_WIDGET (tree_view)) == GTK_TEXT_DIR_RTL);
10209                       gtk_cell_area_focus (cell_area,
10210                                            rtl ? GTK_DIR_LEFT : GTK_DIR_RIGHT);
10211                     }
10212
10213                   break;
10214                 }
10215             }
10216         }
10217     }
10218 }
10219
10220 static void
10221 gtk_tree_view_move_cursor_up_down (GtkTreeView *tree_view,
10222                                    gint         count)
10223 {
10224   gint selection_count;
10225   GtkRBTree *new_cursor_tree = NULL;
10226   GtkRBNode *new_cursor_node = NULL;
10227   GtkTreePath *cursor_path = NULL;
10228   gboolean grab_focus = TRUE;
10229   gboolean selectable;
10230   GtkDirectionType direction;
10231   GtkCellArea *cell_area = NULL;
10232   GtkCellRenderer *last_focus_cell = NULL;
10233   GtkTreeIter iter;
10234
10235   if (! gtk_widget_has_focus (GTK_WIDGET (tree_view)))
10236     return;
10237
10238   if (tree_view->priv->cursor_node == NULL)
10239     return;
10240
10241   cursor_path = _gtk_tree_path_new_from_rbtree (tree_view->priv->cursor_tree,
10242                                                 tree_view->priv->cursor_node);
10243
10244   direction = count < 0 ? GTK_DIR_UP : GTK_DIR_DOWN;
10245
10246   if (tree_view->priv->focus_column)
10247     cell_area = gtk_cell_layout_get_area (GTK_CELL_LAYOUT (tree_view->priv->focus_column));
10248
10249   /* If focus stays in the area for this row, then just return for this round */
10250   if (cell_area && (count == -1 || count == 1) &&
10251       gtk_tree_model_get_iter (tree_view->priv->model, &iter, cursor_path))
10252     {
10253       gtk_tree_view_column_cell_set_cell_data (tree_view->priv->focus_column,
10254                                                tree_view->priv->model,
10255                                                &iter,
10256                                                GTK_RBNODE_FLAG_SET (tree_view->priv->cursor_node, GTK_RBNODE_IS_PARENT),
10257                                                tree_view->priv->cursor_node->children ? TRUE : FALSE);
10258
10259       /* Save the last cell that had focus, if we hit the end of the view we'll give
10260        * focus back to it. */
10261       last_focus_cell = gtk_cell_area_get_focus_cell (cell_area);
10262
10263       /* If focus stays in the area, no need to change the cursor row */
10264       if (gtk_cell_area_focus (cell_area, direction))
10265         return;
10266     }
10267
10268   selection_count = gtk_tree_selection_count_selected_rows (tree_view->priv->selection);
10269   selectable = _gtk_tree_selection_row_is_selectable (tree_view->priv->selection,
10270                                                       tree_view->priv->cursor_node,
10271                                                       cursor_path);
10272
10273   if (selection_count == 0
10274       && gtk_tree_selection_get_mode (tree_view->priv->selection) != GTK_SELECTION_NONE
10275       && !tree_view->priv->modify_selection_pressed
10276       && selectable)
10277     {
10278       /* Don't move the cursor, but just select the current node */
10279       new_cursor_tree = tree_view->priv->cursor_tree;
10280       new_cursor_node = tree_view->priv->cursor_node;
10281     }
10282   else
10283     {
10284       if (count == -1)
10285         _gtk_rbtree_prev_full (tree_view->priv->cursor_tree, tree_view->priv->cursor_node,
10286                                &new_cursor_tree, &new_cursor_node);
10287       else
10288         _gtk_rbtree_next_full (tree_view->priv->cursor_tree, tree_view->priv->cursor_node,
10289                                &new_cursor_tree, &new_cursor_node);
10290     }
10291
10292   gtk_tree_path_free (cursor_path);
10293
10294   if (new_cursor_node)
10295     {
10296       cursor_path = _gtk_tree_path_new_from_rbtree (new_cursor_tree, new_cursor_node);
10297
10298       search_first_focusable_path (tree_view, &cursor_path,
10299                                    (count != -1),
10300                                    &new_cursor_tree,
10301                                    &new_cursor_node);
10302
10303       if (cursor_path)
10304         gtk_tree_path_free (cursor_path);
10305     }
10306
10307   /*
10308    * If the list has only one item and multi-selection is set then select
10309    * the row (if not yet selected).
10310    */
10311   if (gtk_tree_selection_get_mode (tree_view->priv->selection) == GTK_SELECTION_MULTIPLE &&
10312       new_cursor_node == NULL)
10313     {
10314       if (count == -1)
10315         _gtk_rbtree_next_full (tree_view->priv->cursor_tree, tree_view->priv->cursor_node,
10316                                &new_cursor_tree, &new_cursor_node);
10317       else
10318         _gtk_rbtree_prev_full (tree_view->priv->cursor_tree, tree_view->priv->cursor_node,
10319                                &new_cursor_tree, &new_cursor_node);
10320
10321       if (new_cursor_node == NULL
10322           && !GTK_RBNODE_FLAG_SET (tree_view->priv->cursor_node, GTK_RBNODE_IS_SELECTED))
10323         {
10324           new_cursor_node = tree_view->priv->cursor_node;
10325           new_cursor_tree = tree_view->priv->cursor_tree;
10326         }
10327       else
10328         {
10329           new_cursor_tree = NULL;
10330           new_cursor_node = NULL;
10331         }
10332     }
10333
10334   if (new_cursor_node)
10335     {
10336       cursor_path = _gtk_tree_path_new_from_rbtree (new_cursor_tree, new_cursor_node);
10337       gtk_tree_view_real_set_cursor (tree_view, cursor_path, CLEAR_AND_SELECT | CLAMP_NODE);
10338       gtk_tree_path_free (cursor_path);
10339
10340       /* Give focus to the area in the new row */
10341       if (cell_area)
10342         gtk_cell_area_focus (cell_area, direction);
10343     }
10344   else
10345     {
10346       gtk_tree_view_clamp_node_visible (tree_view,
10347                                         tree_view->priv->cursor_tree,
10348                                         tree_view->priv->cursor_node);
10349
10350       if (!tree_view->priv->extend_selection_pressed)
10351         {
10352           if (! gtk_widget_keynav_failed (GTK_WIDGET (tree_view),
10353                                           count < 0 ?
10354                                           GTK_DIR_UP : GTK_DIR_DOWN))
10355             {
10356               GtkWidget *toplevel = gtk_widget_get_toplevel (GTK_WIDGET (tree_view));
10357
10358               if (toplevel)
10359                 gtk_widget_child_focus (toplevel,
10360                                         count < 0 ?
10361                                         GTK_DIR_TAB_BACKWARD :
10362                                         GTK_DIR_TAB_FORWARD);
10363
10364               grab_focus = FALSE;
10365             }
10366         }
10367       else
10368         {
10369           gtk_widget_error_bell (GTK_WIDGET (tree_view));
10370         }
10371
10372       if (cell_area)
10373         gtk_cell_area_set_focus_cell (cell_area, last_focus_cell);
10374     }
10375
10376   if (grab_focus)
10377     gtk_widget_grab_focus (GTK_WIDGET (tree_view));
10378 }
10379
10380 static void
10381 gtk_tree_view_move_cursor_page_up_down (GtkTreeView *tree_view,
10382                                         gint         count)
10383 {
10384   GtkTreePath *old_cursor_path = NULL;
10385   GtkTreePath *cursor_path = NULL;
10386   GtkRBTree *start_cursor_tree = NULL;
10387   GtkRBNode *start_cursor_node = NULL;
10388   GtkRBTree *cursor_tree;
10389   GtkRBNode *cursor_node;
10390   gint y;
10391   gint window_y;
10392   gint vertical_separator;
10393
10394   if (!gtk_widget_has_focus (GTK_WIDGET (tree_view)))
10395     return;
10396
10397   if (tree_view->priv->cursor_node == NULL)
10398     return;
10399
10400   old_cursor_path = _gtk_tree_path_new_from_rbtree (tree_view->priv->cursor_tree,
10401                                                     tree_view->priv->cursor_node);
10402
10403   gtk_widget_style_get (GTK_WIDGET (tree_view), "vertical-separator", &vertical_separator, NULL);
10404
10405   y = _gtk_rbtree_node_find_offset (tree_view->priv->cursor_tree, tree_view->priv->cursor_node);
10406   window_y = RBTREE_Y_TO_TREE_WINDOW_Y (tree_view, y);
10407   y += tree_view->priv->cursor_offset;
10408   y += count * (int)gtk_adjustment_get_page_increment (tree_view->priv->vadjustment);
10409   y = CLAMP (y, (gint)gtk_adjustment_get_lower (tree_view->priv->vadjustment),  (gint)gtk_adjustment_get_upper (tree_view->priv->vadjustment) - vertical_separator);
10410
10411   if (y >= tree_view->priv->height)
10412     y = tree_view->priv->height - 1;
10413
10414   tree_view->priv->cursor_offset =
10415     _gtk_rbtree_find_offset (tree_view->priv->tree, y,
10416                              &cursor_tree, &cursor_node);
10417
10418   if (cursor_tree == NULL)
10419     {
10420       /* FIXME: we lost the cursor.  Should we try to get one? */
10421       gtk_tree_path_free (old_cursor_path);
10422       return;
10423     }
10424
10425   if (tree_view->priv->cursor_offset
10426       > gtk_tree_view_get_row_height (tree_view, cursor_node))
10427     {
10428       _gtk_rbtree_next_full (cursor_tree, cursor_node,
10429                              &cursor_tree, &cursor_node);
10430       tree_view->priv->cursor_offset -= gtk_tree_view_get_row_height (tree_view, cursor_node);
10431     }
10432
10433   y -= tree_view->priv->cursor_offset;
10434   cursor_path = _gtk_tree_path_new_from_rbtree (cursor_tree, cursor_node);
10435
10436   start_cursor_tree = cursor_tree;
10437   start_cursor_node = cursor_node;
10438
10439   if (! search_first_focusable_path (tree_view, &cursor_path,
10440                                      (count != -1),
10441                                      &cursor_tree, &cursor_node))
10442     {
10443       /* It looks like we reached the end of the view without finding
10444        * a focusable row.  We will step backwards to find the last
10445        * focusable row.
10446        */
10447       cursor_tree = start_cursor_tree;
10448       cursor_node = start_cursor_node;
10449       cursor_path = _gtk_tree_path_new_from_rbtree (cursor_tree, cursor_node);
10450
10451       search_first_focusable_path (tree_view, &cursor_path,
10452                                    (count == -1),
10453                                    &cursor_tree, &cursor_node);
10454     }
10455
10456   if (!cursor_path)
10457     goto cleanup;
10458
10459   /* update y */
10460   y = _gtk_rbtree_node_find_offset (cursor_tree, cursor_node);
10461
10462   gtk_tree_view_real_set_cursor (tree_view, cursor_path, CLEAR_AND_SELECT);
10463
10464   y -= window_y;
10465   gtk_tree_view_scroll_to_point (tree_view, -1, y);
10466   gtk_tree_view_clamp_node_visible (tree_view, cursor_tree, cursor_node);
10467   _gtk_tree_view_queue_draw_node (tree_view, cursor_tree, cursor_node, NULL);
10468
10469   if (!gtk_tree_path_compare (old_cursor_path, cursor_path))
10470     gtk_widget_error_bell (GTK_WIDGET (tree_view));
10471
10472   gtk_widget_grab_focus (GTK_WIDGET (tree_view));
10473
10474 cleanup:
10475   gtk_tree_path_free (old_cursor_path);
10476   gtk_tree_path_free (cursor_path);
10477 }
10478
10479 static void
10480 gtk_tree_view_move_cursor_left_right (GtkTreeView *tree_view,
10481                                       gint         count)
10482 {
10483   GtkTreePath *cursor_path = NULL;
10484   GtkTreeViewColumn *column;
10485   GtkTreeIter iter;
10486   GList *list;
10487   gboolean found_column = FALSE;
10488   gboolean rtl;
10489   GtkDirectionType direction;
10490   GtkCellArea     *cell_area;
10491   GtkCellRenderer *last_focus_cell = NULL;
10492   GtkCellArea     *last_focus_area = NULL;
10493
10494   rtl = (gtk_widget_get_direction (GTK_WIDGET (tree_view)) == GTK_TEXT_DIR_RTL);
10495
10496   if (!gtk_widget_has_focus (GTK_WIDGET (tree_view)))
10497     return;
10498
10499   if (tree_view->priv->cursor_node == NULL)
10500     return;
10501
10502   cursor_path = _gtk_tree_path_new_from_rbtree (tree_view->priv->cursor_tree,
10503                                                 tree_view->priv->cursor_node);
10504
10505   if (gtk_tree_model_get_iter (tree_view->priv->model, &iter, cursor_path) == FALSE)
10506     {
10507       gtk_tree_path_free (cursor_path);
10508       return;
10509     }
10510   gtk_tree_path_free (cursor_path);
10511
10512   list = rtl ? g_list_last (tree_view->priv->columns) : g_list_first (tree_view->priv->columns);
10513   if (tree_view->priv->focus_column)
10514     {
10515       /* Save the cell/area we are moving focus from, if moving the cursor
10516        * by one step hits the end we'll set focus back here */
10517       last_focus_area = gtk_cell_layout_get_area (GTK_CELL_LAYOUT (tree_view->priv->focus_column));
10518       last_focus_cell = gtk_cell_area_get_focus_cell (last_focus_area);
10519
10520       for (; list; list = (rtl ? list->prev : list->next))
10521         {
10522           if (list->data == tree_view->priv->focus_column)
10523             break;
10524         }
10525     }
10526
10527   direction = count > 0 ? GTK_DIR_RIGHT : GTK_DIR_LEFT;
10528
10529   while (list)
10530     {
10531       column = list->data;
10532       if (gtk_tree_view_column_get_visible (column) == FALSE)
10533         goto loop_end;
10534
10535       gtk_tree_view_column_cell_set_cell_data (column,
10536                                                tree_view->priv->model,
10537                                                &iter,
10538                                                GTK_RBNODE_FLAG_SET (tree_view->priv->cursor_node, GTK_RBNODE_IS_PARENT),
10539                                                tree_view->priv->cursor_node->children ? TRUE : FALSE);
10540
10541       cell_area = gtk_cell_layout_get_area (GTK_CELL_LAYOUT (column));
10542       if (gtk_cell_area_focus (cell_area, direction))
10543         {
10544           _gtk_tree_view_set_focus_column (tree_view, column);
10545           found_column = TRUE;
10546           break;
10547         }
10548
10549     loop_end:
10550       if (count == 1)
10551         list = rtl ? list->prev : list->next;
10552       else
10553         list = rtl ? list->next : list->prev;
10554     }
10555
10556   if (found_column)
10557     {
10558       if (!gtk_tree_view_has_can_focus_cell (tree_view))
10559         _gtk_tree_view_queue_draw_node (tree_view,
10560                                         tree_view->priv->cursor_tree,
10561                                         tree_view->priv->cursor_node,
10562                                         NULL);
10563       g_signal_emit (tree_view, tree_view_signals[CURSOR_CHANGED], 0);
10564       gtk_widget_grab_focus (GTK_WIDGET (tree_view));
10565     }
10566   else
10567     {
10568       gtk_widget_error_bell (GTK_WIDGET (tree_view));
10569
10570       if (last_focus_area)
10571         gtk_cell_area_set_focus_cell (last_focus_area, last_focus_cell);
10572     }
10573
10574   gtk_tree_view_clamp_column_visible (tree_view,
10575                                       tree_view->priv->focus_column, TRUE);
10576 }
10577
10578 static void
10579 gtk_tree_view_move_cursor_start_end (GtkTreeView *tree_view,
10580                                      gint         count)
10581 {
10582   GtkRBTree *cursor_tree;
10583   GtkRBNode *cursor_node;
10584   GtkTreePath *path;
10585   GtkTreePath *old_path;
10586
10587   if (!gtk_widget_has_focus (GTK_WIDGET (tree_view)))
10588     return;
10589
10590   g_return_if_fail (tree_view->priv->tree != NULL);
10591
10592   gtk_tree_view_get_cursor (tree_view, &old_path, NULL);
10593
10594   cursor_tree = tree_view->priv->tree;
10595
10596   if (count == -1)
10597     {
10598       cursor_node = _gtk_rbtree_first (cursor_tree);
10599
10600       /* Now go forward to find the first focusable row. */
10601       path = _gtk_tree_path_new_from_rbtree (cursor_tree, cursor_node);
10602       search_first_focusable_path (tree_view, &path,
10603                                    TRUE, &cursor_tree, &cursor_node);
10604     }
10605   else
10606     {
10607       cursor_node = cursor_tree->root;
10608
10609       do
10610         {
10611           while (cursor_node && !_gtk_rbtree_is_nil (cursor_node->right))
10612             cursor_node = cursor_node->right;
10613           if (cursor_node->children == NULL)
10614             break;
10615
10616           cursor_tree = cursor_node->children;
10617           cursor_node = cursor_tree->root;
10618         }
10619       while (1);
10620
10621       /* Now go backwards to find last focusable row. */
10622       path = _gtk_tree_path_new_from_rbtree (cursor_tree, cursor_node);
10623       search_first_focusable_path (tree_view, &path,
10624                                    FALSE, &cursor_tree, &cursor_node);
10625     }
10626
10627   if (!path)
10628     goto cleanup;
10629
10630   if (gtk_tree_path_compare (old_path, path))
10631     {
10632       gtk_tree_view_real_set_cursor (tree_view, path, CLEAR_AND_SELECT | CLAMP_NODE);
10633       gtk_widget_grab_focus (GTK_WIDGET (tree_view));
10634     }
10635   else
10636     {
10637       gtk_widget_error_bell (GTK_WIDGET (tree_view));
10638     }
10639
10640 cleanup:
10641   gtk_tree_path_free (old_path);
10642   gtk_tree_path_free (path);
10643 }
10644
10645 static gboolean
10646 gtk_tree_view_real_select_all (GtkTreeView *tree_view)
10647 {
10648   if (!gtk_widget_has_focus (GTK_WIDGET (tree_view)))
10649     return FALSE;
10650
10651   if (gtk_tree_selection_get_mode (tree_view->priv->selection) != GTK_SELECTION_MULTIPLE)
10652     return FALSE;
10653
10654   gtk_tree_selection_select_all (tree_view->priv->selection);
10655
10656   return TRUE;
10657 }
10658
10659 static gboolean
10660 gtk_tree_view_real_unselect_all (GtkTreeView *tree_view)
10661 {
10662   if (!gtk_widget_has_focus (GTK_WIDGET (tree_view)))
10663     return FALSE;
10664
10665   if (gtk_tree_selection_get_mode (tree_view->priv->selection) != GTK_SELECTION_MULTIPLE)
10666     return FALSE;
10667
10668   gtk_tree_selection_unselect_all (tree_view->priv->selection);
10669
10670   return TRUE;
10671 }
10672
10673 static gboolean
10674 gtk_tree_view_real_select_cursor_row (GtkTreeView *tree_view,
10675                                       gboolean     start_editing)
10676 {
10677   GtkRBTree *new_tree = NULL;
10678   GtkRBNode *new_node = NULL;
10679   GtkRBTree *cursor_tree = NULL;
10680   GtkRBNode *cursor_node = NULL;
10681   GtkTreePath *cursor_path = NULL;
10682   GtkTreeSelectMode mode = 0;
10683
10684   if (!gtk_widget_has_focus (GTK_WIDGET (tree_view)))
10685     return FALSE;
10686
10687   if (tree_view->priv->cursor_node == NULL)
10688     return FALSE;
10689
10690   cursor_path = _gtk_tree_path_new_from_rbtree (tree_view->priv->cursor_tree,
10691                                                 tree_view->priv->cursor_node);
10692
10693   _gtk_tree_view_find_node (tree_view, cursor_path,
10694                             &cursor_tree, &cursor_node);
10695
10696   if (cursor_tree == NULL)
10697     {
10698       gtk_tree_path_free (cursor_path);
10699       return FALSE;
10700     }
10701
10702   if (!tree_view->priv->extend_selection_pressed && start_editing &&
10703       tree_view->priv->focus_column)
10704     {
10705       if (gtk_tree_view_start_editing (tree_view, cursor_path, FALSE))
10706         {
10707           gtk_tree_path_free (cursor_path);
10708           return TRUE;
10709         }
10710     }
10711
10712   if (tree_view->priv->modify_selection_pressed)
10713     mode |= GTK_TREE_SELECT_MODE_TOGGLE;
10714   if (tree_view->priv->extend_selection_pressed)
10715     mode |= GTK_TREE_SELECT_MODE_EXTEND;
10716
10717   _gtk_tree_selection_internal_select_node (tree_view->priv->selection,
10718                                             cursor_node,
10719                                             cursor_tree,
10720                                             cursor_path,
10721                                             mode,
10722                                             FALSE);
10723
10724   /* We bail out if the original (tree, node) don't exist anymore after
10725    * handling the selection-changed callback.  We do return TRUE because
10726    * the key press has been handled at this point.
10727    */
10728   _gtk_tree_view_find_node (tree_view, cursor_path, &new_tree, &new_node);
10729
10730   if (cursor_tree != new_tree || cursor_node != new_node)
10731     return FALSE;
10732
10733   gtk_tree_view_clamp_node_visible (tree_view, cursor_tree, cursor_node);
10734
10735   gtk_widget_grab_focus (GTK_WIDGET (tree_view));
10736   _gtk_tree_view_queue_draw_node (tree_view, cursor_tree, cursor_node, NULL);
10737
10738   if (!tree_view->priv->extend_selection_pressed)
10739     gtk_tree_view_row_activated (tree_view, cursor_path,
10740                                  tree_view->priv->focus_column);
10741
10742   gtk_tree_path_free (cursor_path);
10743
10744   return TRUE;
10745 }
10746
10747 static gboolean
10748 gtk_tree_view_real_toggle_cursor_row (GtkTreeView *tree_view)
10749 {
10750   GtkRBTree *new_tree = NULL;
10751   GtkRBNode *new_node = NULL;
10752   GtkTreePath *cursor_path = NULL;
10753
10754   if (!gtk_widget_has_focus (GTK_WIDGET (tree_view)))
10755     return FALSE;
10756
10757   if (tree_view->priv->cursor_node == NULL)
10758     return FALSE;
10759
10760   cursor_path = _gtk_tree_path_new_from_rbtree (tree_view->priv->cursor_tree,
10761                                                 tree_view->priv->cursor_node);
10762
10763   _gtk_tree_selection_internal_select_node (tree_view->priv->selection,
10764                                             tree_view->priv->cursor_node,
10765                                             tree_view->priv->cursor_tree,
10766                                             cursor_path,
10767                                             GTK_TREE_SELECT_MODE_TOGGLE,
10768                                             FALSE);
10769
10770   /* We bail out if the original (tree, node) don't exist anymore after
10771    * handling the selection-changed callback.  We do return TRUE because
10772    * the key press has been handled at this point.
10773    */
10774   _gtk_tree_view_find_node (tree_view, cursor_path, &new_tree, &new_node);
10775
10776   if (tree_view->priv->cursor_node != new_node)
10777     return FALSE;
10778
10779   gtk_tree_view_clamp_node_visible (tree_view,
10780                                     tree_view->priv->cursor_tree,
10781                                     tree_view->priv->cursor_node);
10782
10783   gtk_widget_grab_focus (GTK_WIDGET (tree_view));
10784   gtk_tree_view_queue_draw_path (tree_view, cursor_path, NULL);
10785   gtk_tree_path_free (cursor_path);
10786
10787   return TRUE;
10788 }
10789
10790 static gboolean
10791 gtk_tree_view_real_expand_collapse_cursor_row (GtkTreeView *tree_view,
10792                                                gboolean     logical,
10793                                                gboolean     expand,
10794                                                gboolean     open_all)
10795 {
10796   GtkTreePath *cursor_path = NULL;
10797
10798   if (!gtk_widget_has_focus (GTK_WIDGET (tree_view)))
10799     return FALSE;
10800
10801   if (tree_view->priv->cursor_node == NULL)
10802     return FALSE;
10803
10804   cursor_path = _gtk_tree_path_new_from_rbtree (tree_view->priv->cursor_tree,
10805                                                 tree_view->priv->cursor_node);
10806
10807   /* Don't handle the event if we aren't an expander */
10808   if (!GTK_RBNODE_FLAG_SET (tree_view->priv->cursor_node, GTK_RBNODE_IS_PARENT))
10809     return FALSE;
10810
10811   if (!logical
10812       && gtk_widget_get_direction (GTK_WIDGET (tree_view)) == GTK_TEXT_DIR_RTL)
10813     expand = !expand;
10814
10815   if (expand)
10816     gtk_tree_view_real_expand_row (tree_view,
10817                                    cursor_path,
10818                                    tree_view->priv->cursor_tree,
10819                                    tree_view->priv->cursor_node,
10820                                    open_all,
10821                                    TRUE);
10822   else
10823     gtk_tree_view_real_collapse_row (tree_view,
10824                                      cursor_path,
10825                                      tree_view->priv->cursor_tree,
10826                                      tree_view->priv->cursor_node,
10827                                      TRUE);
10828
10829   gtk_tree_path_free (cursor_path);
10830
10831   return TRUE;
10832 }
10833
10834 static gboolean
10835 gtk_tree_view_real_select_cursor_parent (GtkTreeView *tree_view)
10836 {
10837   GtkTreePath *cursor_path = NULL;
10838   GdkModifierType state;
10839
10840   if (!gtk_widget_has_focus (GTK_WIDGET (tree_view)))
10841     goto out;
10842
10843   if (tree_view->priv->cursor_node == NULL)
10844     goto out;
10845
10846   cursor_path = _gtk_tree_path_new_from_rbtree (tree_view->priv->cursor_tree,
10847                                                 tree_view->priv->cursor_node);
10848
10849   if (tree_view->priv->cursor_tree->parent_node)
10850     {
10851       gtk_tree_view_queue_draw_path (tree_view, cursor_path, NULL);
10852
10853       gtk_tree_path_up (cursor_path);
10854
10855       if (gtk_get_current_event_state (&state))
10856         {
10857           GdkModifierType modify_mod_mask;
10858
10859           modify_mod_mask =
10860             gtk_widget_get_modifier_mask (GTK_WIDGET (tree_view),
10861                                           GDK_MODIFIER_INTENT_MODIFY_SELECTION);
10862
10863           if ((state & modify_mod_mask) == modify_mod_mask)
10864             tree_view->priv->modify_selection_pressed = TRUE;
10865         }
10866
10867       gtk_tree_view_real_set_cursor (tree_view, cursor_path, CLEAR_AND_SELECT | CLAMP_NODE);
10868       gtk_tree_path_free (cursor_path);
10869
10870       gtk_widget_grab_focus (GTK_WIDGET (tree_view));
10871
10872       tree_view->priv->modify_selection_pressed = FALSE;
10873
10874       return TRUE;
10875     }
10876
10877  out:
10878
10879   tree_view->priv->search_entry_avoid_unhandled_binding = TRUE;
10880   return FALSE;
10881 }
10882
10883 static gboolean
10884 gtk_tree_view_search_entry_flush_timeout (GtkTreeView *tree_view)
10885 {
10886   gtk_tree_view_search_dialog_hide (tree_view->priv->search_window, tree_view, NULL);
10887   tree_view->priv->typeselect_flush_timeout = 0;
10888
10889   return FALSE;
10890 }
10891
10892 /* Cut and paste from gtkwindow.c */
10893 static void
10894 send_focus_change (GtkWidget *widget,
10895                    GdkDevice *device,
10896                    gboolean   in)
10897 {
10898   GdkDeviceManager *device_manager;
10899   GList *devices, *d;
10900
10901   device_manager = gdk_display_get_device_manager (gtk_widget_get_display (widget));
10902   devices = gdk_device_manager_list_devices (device_manager, GDK_DEVICE_TYPE_MASTER);
10903   devices = g_list_concat (devices, gdk_device_manager_list_devices (device_manager, GDK_DEVICE_TYPE_SLAVE));
10904   devices = g_list_concat (devices, gdk_device_manager_list_devices (device_manager, GDK_DEVICE_TYPE_FLOATING));
10905
10906   for (d = devices; d; d = d->next)
10907     {
10908       GdkDevice *dev = d->data;
10909       GdkEvent *fevent;
10910       GdkWindow *window;
10911
10912       if (gdk_device_get_source (dev) != GDK_SOURCE_KEYBOARD)
10913         continue;
10914
10915       window = gtk_widget_get_window (widget);
10916
10917       /* Skip non-master keyboards that haven't
10918        * selected for events from this window
10919        */
10920       if (gdk_device_get_device_type (dev) != GDK_DEVICE_TYPE_MASTER &&
10921           !gdk_window_get_device_events (window, dev))
10922         continue;
10923
10924       fevent = gdk_event_new (GDK_FOCUS_CHANGE);
10925
10926       fevent->focus_change.type = GDK_FOCUS_CHANGE;
10927       fevent->focus_change.window = g_object_ref (window);
10928       fevent->focus_change.in = in;
10929       gdk_event_set_device (fevent, device);
10930
10931       gtk_widget_send_focus_change (widget, fevent);
10932
10933       gdk_event_free (fevent);
10934     }
10935
10936   g_list_free (devices);
10937 }
10938
10939 static void
10940 gtk_tree_view_ensure_interactive_directory (GtkTreeView *tree_view)
10941 {
10942   GtkWidget *frame, *vbox, *toplevel;
10943   GdkScreen *screen;
10944
10945   if (tree_view->priv->search_custom_entry_set)
10946     return;
10947
10948   toplevel = gtk_widget_get_toplevel (GTK_WIDGET (tree_view));
10949   screen = gtk_widget_get_screen (GTK_WIDGET (tree_view));
10950
10951    if (tree_view->priv->search_window != NULL)
10952      {
10953        if (gtk_window_has_group (GTK_WINDOW (toplevel)))
10954          gtk_window_group_add_window (gtk_window_get_group (GTK_WINDOW (toplevel)),
10955                                       GTK_WINDOW (tree_view->priv->search_window));
10956        else if (gtk_window_has_group (GTK_WINDOW (tree_view->priv->search_window)))
10957          gtk_window_group_remove_window (gtk_window_get_group (GTK_WINDOW (tree_view->priv->search_window)),
10958                                          GTK_WINDOW (tree_view->priv->search_window));
10959
10960        gtk_window_set_screen (GTK_WINDOW (tree_view->priv->search_window), screen);
10961
10962        return;
10963      }
10964
10965   tree_view->priv->search_window = gtk_window_new (GTK_WINDOW_POPUP);
10966   gtk_window_set_screen (GTK_WINDOW (tree_view->priv->search_window), screen);
10967
10968   if (gtk_window_has_group (GTK_WINDOW (toplevel)))
10969     gtk_window_group_add_window (gtk_window_get_group (GTK_WINDOW (toplevel)),
10970                                  GTK_WINDOW (tree_view->priv->search_window));
10971
10972   gtk_window_set_type_hint (GTK_WINDOW (tree_view->priv->search_window),
10973                             GDK_WINDOW_TYPE_HINT_UTILITY);
10974   gtk_window_set_modal (GTK_WINDOW (tree_view->priv->search_window), TRUE);
10975   g_signal_connect (tree_view->priv->search_window, "delete-event",
10976                     G_CALLBACK (gtk_tree_view_search_delete_event),
10977                     tree_view);
10978   g_signal_connect (tree_view->priv->search_window, "key-press-event",
10979                     G_CALLBACK (gtk_tree_view_search_key_press_event),
10980                     tree_view);
10981   g_signal_connect (tree_view->priv->search_window, "button-press-event",
10982                     G_CALLBACK (gtk_tree_view_search_button_press_event),
10983                     tree_view);
10984   g_signal_connect (tree_view->priv->search_window, "scroll-event",
10985                     G_CALLBACK (gtk_tree_view_search_scroll_event),
10986                     tree_view);
10987
10988   frame = gtk_frame_new (NULL);
10989   gtk_frame_set_shadow_type (GTK_FRAME (frame), GTK_SHADOW_ETCHED_IN);
10990   gtk_widget_show (frame);
10991   gtk_container_add (GTK_CONTAINER (tree_view->priv->search_window), frame);
10992
10993   vbox = gtk_box_new (GTK_ORIENTATION_VERTICAL, 0);
10994   gtk_widget_show (vbox);
10995   gtk_container_add (GTK_CONTAINER (frame), vbox);
10996   gtk_container_set_border_width (GTK_CONTAINER (vbox), 3);
10997
10998   /* add entry */
10999   tree_view->priv->search_entry = gtk_entry_new ();
11000   gtk_widget_show (tree_view->priv->search_entry);
11001   g_signal_connect (tree_view->priv->search_entry, "populate-popup",
11002                     G_CALLBACK (gtk_tree_view_search_disable_popdown),
11003                     tree_view);
11004   g_signal_connect (tree_view->priv->search_entry,
11005                     "activate", G_CALLBACK (gtk_tree_view_search_activate),
11006                     tree_view);
11007
11008   g_signal_connect (_gtk_entry_get_im_context (GTK_ENTRY (tree_view->priv->search_entry)),
11009                     "preedit-changed",
11010                     G_CALLBACK (gtk_tree_view_search_preedit_changed),
11011                     tree_view);
11012
11013   gtk_container_add (GTK_CONTAINER (vbox),
11014                      tree_view->priv->search_entry);
11015
11016   gtk_widget_realize (tree_view->priv->search_entry);
11017 }
11018
11019 /* Pops up the interactive search entry.  If keybinding is TRUE then the user
11020  * started this by typing the start_interactive_search keybinding.  Otherwise, it came from
11021  */
11022 static gboolean
11023 gtk_tree_view_real_start_interactive_search (GtkTreeView *tree_view,
11024                                              GdkDevice   *device,
11025                                              gboolean     keybinding)
11026 {
11027   /* We only start interactive search if we have focus or the columns
11028    * have focus.  If one of our children have focus, we don't want to
11029    * start the search.
11030    */
11031   GList *list;
11032   gboolean found_focus = FALSE;
11033   GtkWidgetClass *entry_parent_class;
11034
11035   if (!tree_view->priv->enable_search && !keybinding)
11036     return FALSE;
11037
11038   if (tree_view->priv->search_custom_entry_set)
11039     return FALSE;
11040
11041   if (tree_view->priv->search_window != NULL &&
11042       gtk_widget_get_visible (tree_view->priv->search_window))
11043     return TRUE;
11044
11045   for (list = tree_view->priv->columns; list; list = list->next)
11046     {
11047       GtkTreeViewColumn *column;
11048       GtkWidget         *button;
11049
11050       column = list->data;
11051       if (!gtk_tree_view_column_get_visible (column))
11052         continue;
11053
11054       button = gtk_tree_view_column_get_button (column);
11055       if (gtk_widget_has_focus (button))
11056         {
11057           found_focus = TRUE;
11058           break;
11059         }
11060     }
11061
11062   if (gtk_widget_has_focus (GTK_WIDGET (tree_view)))
11063     found_focus = TRUE;
11064
11065   if (!found_focus)
11066     return FALSE;
11067
11068   if (tree_view->priv->search_column < 0)
11069     return FALSE;
11070
11071   gtk_tree_view_ensure_interactive_directory (tree_view);
11072
11073   if (keybinding)
11074     gtk_entry_set_text (GTK_ENTRY (tree_view->priv->search_entry), "");
11075
11076   /* done, show it */
11077   tree_view->priv->search_position_func (tree_view, tree_view->priv->search_window, tree_view->priv->search_position_user_data);
11078   gtk_widget_show (tree_view->priv->search_window);
11079   if (tree_view->priv->search_entry_changed_id == 0)
11080     {
11081       tree_view->priv->search_entry_changed_id =
11082         g_signal_connect (tree_view->priv->search_entry, "changed",
11083                           G_CALLBACK (gtk_tree_view_search_init),
11084                           tree_view);
11085     }
11086
11087   tree_view->priv->typeselect_flush_timeout =
11088     gdk_threads_add_timeout (GTK_TREE_VIEW_SEARCH_DIALOG_TIMEOUT,
11089                    (GSourceFunc) gtk_tree_view_search_entry_flush_timeout,
11090                    tree_view);
11091
11092   /* Grab focus will select all the text.  We don't want that to happen, so we
11093    * call the parent instance and bypass the selection change.  This is probably
11094    * really non-kosher. */
11095   entry_parent_class = g_type_class_peek_parent (GTK_ENTRY_GET_CLASS (tree_view->priv->search_entry));
11096   (entry_parent_class->grab_focus) (tree_view->priv->search_entry);
11097
11098   /* send focus-in event */
11099   send_focus_change (tree_view->priv->search_entry, device, TRUE);
11100
11101   /* search first matching iter */
11102   gtk_tree_view_search_init (tree_view->priv->search_entry, tree_view);
11103
11104   return TRUE;
11105 }
11106
11107 static gboolean
11108 gtk_tree_view_start_interactive_search (GtkTreeView *tree_view)
11109 {
11110   return gtk_tree_view_real_start_interactive_search (tree_view,
11111                                                       gtk_get_current_event_device (),
11112                                                       TRUE);
11113 }
11114
11115 /* FIXME this adjust_allocation is a big cut-and-paste from
11116  * GtkCList, needs to be some "official" way to do this
11117  * factored out.
11118  */
11119 typedef struct
11120 {
11121   GdkWindow *window;
11122   int dx;
11123   int dy;
11124 } ScrollData;
11125
11126 /* The window to which widget->window is relative */
11127 #define ALLOCATION_WINDOW(widget)               \
11128    (!gtk_widget_get_has_window (widget) ?                   \
11129     gtk_widget_get_window (widget) :                        \
11130     gdk_window_get_parent (gtk_widget_get_window (widget)))
11131
11132 static void
11133 adjust_allocation_recurse (GtkWidget *widget,
11134                            gpointer   data)
11135 {
11136   GtkAllocation allocation;
11137   ScrollData *scroll_data = data;
11138
11139   /* Need to really size allocate instead of just poking
11140    * into widget->allocation if the widget is not realized.
11141    * FIXME someone figure out why this was.
11142    */
11143   gtk_widget_get_allocation (widget, &allocation);
11144   if (!gtk_widget_get_realized (widget))
11145     {
11146       if (gtk_widget_get_visible (widget))
11147         {
11148           GdkRectangle tmp_rectangle = allocation;
11149           tmp_rectangle.x += scroll_data->dx;
11150           tmp_rectangle.y += scroll_data->dy;
11151
11152           gtk_widget_size_allocate (widget, &tmp_rectangle);
11153         }
11154     }
11155   else
11156     {
11157       if (ALLOCATION_WINDOW (widget) == scroll_data->window)
11158         {
11159           allocation.x += scroll_data->dx;
11160           allocation.y += scroll_data->dy;
11161           gtk_widget_set_allocation (widget, &allocation);
11162
11163           if (GTK_IS_CONTAINER (widget))
11164             gtk_container_forall (GTK_CONTAINER (widget),
11165                                   adjust_allocation_recurse,
11166                                   data);
11167         }
11168     }
11169 }
11170
11171 static void
11172 adjust_allocation (GtkWidget *widget,
11173                    int        dx,
11174                    int        dy)
11175 {
11176   ScrollData scroll_data;
11177
11178   if (gtk_widget_get_realized (widget))
11179     scroll_data.window = ALLOCATION_WINDOW (widget);
11180   else
11181     scroll_data.window = NULL;
11182
11183   scroll_data.dx = dx;
11184   scroll_data.dy = dy;
11185
11186   adjust_allocation_recurse (widget, &scroll_data);
11187 }
11188
11189 /* Callbacks */
11190 static void
11191 gtk_tree_view_adjustment_changed (GtkAdjustment *adjustment,
11192                                   GtkTreeView   *tree_view)
11193 {
11194   if (gtk_widget_get_realized (GTK_WIDGET (tree_view)))
11195     {
11196       gint dy;
11197
11198       gdk_window_move (tree_view->priv->bin_window,
11199                        - gtk_adjustment_get_value (tree_view->priv->hadjustment),
11200                        gtk_tree_view_get_effective_header_height (tree_view));
11201       gdk_window_move (tree_view->priv->header_window,
11202                        - gtk_adjustment_get_value (tree_view->priv->hadjustment),
11203                        0);
11204       dy = tree_view->priv->dy - (int) gtk_adjustment_get_value (tree_view->priv->vadjustment);
11205       if (dy)
11206         {
11207           update_prelight (tree_view,
11208                            tree_view->priv->event_last_x,
11209                            tree_view->priv->event_last_y - dy);
11210
11211           if (tree_view->priv->edited_column)
11212             {
11213               GList *list;
11214               GtkTreeViewChild *child = NULL;
11215               GtkCellEditable *edit_widget;
11216               GtkCellArea *area;
11217
11218               area        = gtk_cell_layout_get_area (GTK_CELL_LAYOUT (tree_view->priv->edited_column));
11219               edit_widget = gtk_cell_area_get_edit_widget (area);
11220               if (GTK_IS_WIDGET (edit_widget))
11221                 {
11222                   adjust_allocation (GTK_WIDGET (edit_widget), 0, dy);
11223
11224                   for (list = tree_view->priv->children; list; list = list->next)
11225                     {
11226                       child = (GtkTreeViewChild *)list->data;
11227                       if (child->widget == GTK_WIDGET (edit_widget))
11228                         {
11229                           child->y += dy;
11230                           break;
11231                         }
11232                     }
11233                 }
11234             }
11235         }
11236       gdk_window_scroll (tree_view->priv->bin_window, 0, dy);
11237
11238       if (tree_view->priv->dy != (int) gtk_adjustment_get_value (tree_view->priv->vadjustment))
11239         {
11240           /* update our dy and top_row */
11241           tree_view->priv->dy = (int) gtk_adjustment_get_value (tree_view->priv->vadjustment);
11242
11243           if (!tree_view->priv->in_top_row_to_dy)
11244             gtk_tree_view_dy_to_top_row (tree_view);
11245         }
11246     }
11247 }
11248
11249 \f
11250
11251 /* Public methods
11252  */
11253
11254 /**
11255  * gtk_tree_view_new:
11256  *
11257  * Creates a new #GtkTreeView widget.
11258  *
11259  * Return value: A newly created #GtkTreeView widget.
11260  **/
11261 GtkWidget *
11262 gtk_tree_view_new (void)
11263 {
11264   return g_object_new (GTK_TYPE_TREE_VIEW, NULL);
11265 }
11266
11267 /**
11268  * gtk_tree_view_new_with_model:
11269  * @model: the model.
11270  *
11271  * Creates a new #GtkTreeView widget with the model initialized to @model.
11272  *
11273  * Return value: A newly created #GtkTreeView widget.
11274  **/
11275 GtkWidget *
11276 gtk_tree_view_new_with_model (GtkTreeModel *model)
11277 {
11278   return g_object_new (GTK_TYPE_TREE_VIEW, "model", model, NULL);
11279 }
11280
11281 /* Public Accessors
11282  */
11283
11284 /**
11285  * gtk_tree_view_get_model:
11286  * @tree_view: a #GtkTreeView
11287  *
11288  * Returns the model the #GtkTreeView is based on.  Returns %NULL if the
11289  * model is unset.
11290  *
11291  * Return value: (transfer none): A #GtkTreeModel, or %NULL if none is currently being used.
11292  **/
11293 GtkTreeModel *
11294 gtk_tree_view_get_model (GtkTreeView *tree_view)
11295 {
11296   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), NULL);
11297
11298   return tree_view->priv->model;
11299 }
11300
11301 /**
11302  * gtk_tree_view_set_model:
11303  * @tree_view: A #GtkTreeView.
11304  * @model: (allow-none): The model.
11305  *
11306  * Sets the model for a #GtkTreeView.  If the @tree_view already has a model
11307  * set, it will remove it before setting the new model.  If @model is %NULL,
11308  * then it will unset the old model.
11309  **/
11310 void
11311 gtk_tree_view_set_model (GtkTreeView  *tree_view,
11312                          GtkTreeModel *model)
11313 {
11314   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
11315   g_return_if_fail (model == NULL || GTK_IS_TREE_MODEL (model));
11316
11317   if (model == tree_view->priv->model)
11318     return;
11319
11320   if (tree_view->priv->scroll_to_path)
11321     {
11322       gtk_tree_row_reference_free (tree_view->priv->scroll_to_path);
11323       tree_view->priv->scroll_to_path = NULL;
11324     }
11325
11326   if (tree_view->priv->rubber_band_status)
11327     gtk_tree_view_stop_rubber_band (tree_view);
11328
11329   if (tree_view->priv->model)
11330     {
11331       GList *tmplist = tree_view->priv->columns;
11332
11333       gtk_tree_view_unref_and_check_selection_tree (tree_view, tree_view->priv->tree);
11334       gtk_tree_view_stop_editing (tree_view, TRUE);
11335
11336       g_signal_handlers_disconnect_by_func (tree_view->priv->model,
11337                                             gtk_tree_view_row_changed,
11338                                             tree_view);
11339       g_signal_handlers_disconnect_by_func (tree_view->priv->model,
11340                                             gtk_tree_view_row_inserted,
11341                                             tree_view);
11342       g_signal_handlers_disconnect_by_func (tree_view->priv->model,
11343                                             gtk_tree_view_row_has_child_toggled,
11344                                             tree_view);
11345       g_signal_handlers_disconnect_by_func (tree_view->priv->model,
11346                                             gtk_tree_view_row_deleted,
11347                                             tree_view);
11348       g_signal_handlers_disconnect_by_func (tree_view->priv->model,
11349                                             gtk_tree_view_rows_reordered,
11350                                             tree_view);
11351
11352       for (; tmplist; tmplist = tmplist->next)
11353         _gtk_tree_view_column_unset_model (tmplist->data,
11354                                            tree_view->priv->model);
11355
11356       if (tree_view->priv->tree)
11357         gtk_tree_view_free_rbtree (tree_view);
11358
11359       gtk_tree_row_reference_free (tree_view->priv->drag_dest_row);
11360       tree_view->priv->drag_dest_row = NULL;
11361       gtk_tree_row_reference_free (tree_view->priv->anchor);
11362       tree_view->priv->anchor = NULL;
11363       gtk_tree_row_reference_free (tree_view->priv->top_row);
11364       tree_view->priv->top_row = NULL;
11365       gtk_tree_row_reference_free (tree_view->priv->scroll_to_path);
11366       tree_view->priv->scroll_to_path = NULL;
11367
11368       tree_view->priv->scroll_to_column = NULL;
11369
11370       g_object_unref (tree_view->priv->model);
11371
11372       tree_view->priv->search_column = -1;
11373       tree_view->priv->fixed_height_check = 0;
11374       tree_view->priv->fixed_height = -1;
11375       tree_view->priv->dy = tree_view->priv->top_row_dy = 0;
11376       tree_view->priv->last_button_x = -1;
11377       tree_view->priv->last_button_y = -1;
11378     }
11379
11380   tree_view->priv->model = model;
11381
11382   if (tree_view->priv->model)
11383     {
11384       gint i;
11385       GtkTreePath *path;
11386       GtkTreeIter iter;
11387       GtkTreeModelFlags flags;
11388
11389       if (tree_view->priv->search_column == -1)
11390         {
11391           for (i = 0; i < gtk_tree_model_get_n_columns (model); i++)
11392             {
11393               GType type = gtk_tree_model_get_column_type (model, i);
11394
11395               if (g_value_type_transformable (type, G_TYPE_STRING))
11396                 {
11397                   tree_view->priv->search_column = i;
11398                   break;
11399                 }
11400             }
11401         }
11402
11403       g_object_ref (tree_view->priv->model);
11404       g_signal_connect (tree_view->priv->model,
11405                         "row-changed",
11406                         G_CALLBACK (gtk_tree_view_row_changed),
11407                         tree_view);
11408       g_signal_connect (tree_view->priv->model,
11409                         "row-inserted",
11410                         G_CALLBACK (gtk_tree_view_row_inserted),
11411                         tree_view);
11412       g_signal_connect (tree_view->priv->model,
11413                         "row-has-child-toggled",
11414                         G_CALLBACK (gtk_tree_view_row_has_child_toggled),
11415                         tree_view);
11416       g_signal_connect (tree_view->priv->model,
11417                         "row-deleted",
11418                         G_CALLBACK (gtk_tree_view_row_deleted),
11419                         tree_view);
11420       g_signal_connect (tree_view->priv->model,
11421                         "rows-reordered",
11422                         G_CALLBACK (gtk_tree_view_rows_reordered),
11423                         tree_view);
11424
11425       flags = gtk_tree_model_get_flags (tree_view->priv->model);
11426       if ((flags & GTK_TREE_MODEL_LIST_ONLY) == GTK_TREE_MODEL_LIST_ONLY)
11427         tree_view->priv->is_list = TRUE;
11428       else
11429         tree_view->priv->is_list = FALSE;
11430
11431       path = gtk_tree_path_new_first ();
11432       if (gtk_tree_model_get_iter (tree_view->priv->model, &iter, path))
11433         {
11434           tree_view->priv->tree = _gtk_rbtree_new ();
11435           gtk_tree_view_build_tree (tree_view, tree_view->priv->tree, &iter, 1, FALSE);
11436           _gtk_tree_view_accessible_add (tree_view, tree_view->priv->tree, NULL);
11437         }
11438       gtk_tree_path_free (path);
11439
11440       /*  FIXME: do I need to do this? gtk_tree_view_create_buttons (tree_view); */
11441       install_presize_handler (tree_view);
11442     }
11443
11444   gtk_tree_view_real_set_cursor (tree_view, NULL, CURSOR_INVALID);
11445
11446   g_object_notify (G_OBJECT (tree_view), "model");
11447
11448   if (tree_view->priv->selection)
11449   _gtk_tree_selection_emit_changed (tree_view->priv->selection);
11450
11451   if (gtk_widget_get_realized (GTK_WIDGET (tree_view)))
11452     gtk_widget_queue_resize (GTK_WIDGET (tree_view));
11453 }
11454
11455 /**
11456  * gtk_tree_view_get_selection:
11457  * @tree_view: A #GtkTreeView.
11458  *
11459  * Gets the #GtkTreeSelection associated with @tree_view.
11460  *
11461  * Return value: (transfer none): A #GtkTreeSelection object.
11462  **/
11463 GtkTreeSelection *
11464 gtk_tree_view_get_selection (GtkTreeView *tree_view)
11465 {
11466   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), NULL);
11467
11468   return tree_view->priv->selection;
11469 }
11470
11471 /**
11472  * gtk_tree_view_get_hadjustment:
11473  * @tree_view: A #GtkTreeView
11474  *
11475  * Gets the #GtkAdjustment currently being used for the horizontal aspect.
11476  *
11477  * Return value: (transfer none): A #GtkAdjustment object, or %NULL
11478  *     if none is currently being used.
11479  *
11480  * Deprecated: 3.0: Use gtk_scrollable_get_hadjustment()
11481  **/
11482 GtkAdjustment *
11483 gtk_tree_view_get_hadjustment (GtkTreeView *tree_view)
11484 {
11485   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), NULL);
11486
11487   return gtk_tree_view_do_get_hadjustment (tree_view);
11488 }
11489
11490 static GtkAdjustment *
11491 gtk_tree_view_do_get_hadjustment (GtkTreeView *tree_view)
11492 {
11493   return tree_view->priv->hadjustment;
11494 }
11495
11496 /**
11497  * gtk_tree_view_set_hadjustment:
11498  * @tree_view: A #GtkTreeView
11499  * @adjustment: (allow-none): The #GtkAdjustment to set, or %NULL
11500  *
11501  * Sets the #GtkAdjustment for the current horizontal aspect.
11502  *
11503  * Deprecated: 3.0: Use gtk_scrollable_set_hadjustment()
11504  **/
11505 void
11506 gtk_tree_view_set_hadjustment (GtkTreeView   *tree_view,
11507                                GtkAdjustment *adjustment)
11508 {
11509   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
11510   g_return_if_fail (adjustment == NULL || GTK_IS_ADJUSTMENT (adjustment));
11511
11512   gtk_tree_view_do_set_hadjustment (tree_view, adjustment);
11513 }
11514
11515 static void
11516 gtk_tree_view_do_set_hadjustment (GtkTreeView   *tree_view,
11517                                   GtkAdjustment *adjustment)
11518 {
11519   GtkTreeViewPrivate *priv = tree_view->priv;
11520
11521   if (adjustment && priv->hadjustment == adjustment)
11522     return;
11523
11524   if (priv->hadjustment != NULL)
11525     {
11526       g_signal_handlers_disconnect_by_func (priv->hadjustment,
11527                                             gtk_tree_view_adjustment_changed,
11528                                             tree_view);
11529       g_object_unref (priv->hadjustment);
11530     }
11531
11532   if (adjustment == NULL)
11533     adjustment = gtk_adjustment_new (0.0, 0.0, 0.0,
11534                                      0.0, 0.0, 0.0);
11535
11536   g_signal_connect (adjustment, "value-changed",
11537                     G_CALLBACK (gtk_tree_view_adjustment_changed), tree_view);
11538   priv->hadjustment = g_object_ref_sink (adjustment);
11539   /* FIXME: Adjustment should probably be populated here with fresh values, but
11540    * internal details are too complicated for me to decipher right now.
11541    */
11542   gtk_tree_view_adjustment_changed (NULL, tree_view);
11543
11544   g_object_notify (G_OBJECT (tree_view), "hadjustment");
11545 }
11546
11547 /**
11548  * gtk_tree_view_get_vadjustment:
11549  * @tree_view: A #GtkTreeView
11550  *
11551  * Gets the #GtkAdjustment currently being used for the vertical aspect.
11552  *
11553  * Return value: (transfer none): A #GtkAdjustment object, or %NULL
11554  *     if none is currently being used.
11555  *
11556  * Deprecated: 3.0: Use gtk_scrollable_get_vadjustment()
11557  **/
11558 GtkAdjustment *
11559 gtk_tree_view_get_vadjustment (GtkTreeView *tree_view)
11560 {
11561   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), NULL);
11562
11563   return gtk_tree_view_do_get_vadjustment (tree_view);
11564 }
11565
11566 static GtkAdjustment *
11567 gtk_tree_view_do_get_vadjustment (GtkTreeView *tree_view)
11568 {
11569   return tree_view->priv->vadjustment;
11570 }
11571
11572 /**
11573  * gtk_tree_view_set_vadjustment:
11574  * @tree_view: A #GtkTreeView
11575  * @adjustment: (allow-none): The #GtkAdjustment to set, or %NULL
11576  *
11577  * Sets the #GtkAdjustment for the current vertical aspect.
11578  *
11579  * Deprecated: 3.0: Use gtk_scrollable_set_vadjustment()
11580  **/
11581 void
11582 gtk_tree_view_set_vadjustment (GtkTreeView   *tree_view,
11583                                GtkAdjustment *adjustment)
11584 {
11585   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
11586   g_return_if_fail (adjustment == NULL || GTK_IS_ADJUSTMENT (adjustment));
11587
11588   gtk_tree_view_do_set_vadjustment (tree_view, adjustment);
11589 }
11590
11591 static void
11592 gtk_tree_view_do_set_vadjustment (GtkTreeView   *tree_view,
11593                                   GtkAdjustment *adjustment)
11594 {
11595   GtkTreeViewPrivate *priv = tree_view->priv;
11596
11597   if (adjustment && priv->vadjustment == adjustment)
11598     return;
11599
11600   if (priv->vadjustment != NULL)
11601     {
11602       g_signal_handlers_disconnect_by_func (priv->vadjustment,
11603                                             gtk_tree_view_adjustment_changed,
11604                                             tree_view);
11605       g_object_unref (priv->vadjustment);
11606     }
11607
11608   if (adjustment == NULL)
11609     adjustment = gtk_adjustment_new (0.0, 0.0, 0.0,
11610                                      0.0, 0.0, 0.0);
11611
11612   g_signal_connect (adjustment, "value-changed",
11613                     G_CALLBACK (gtk_tree_view_adjustment_changed), tree_view);
11614   priv->vadjustment = g_object_ref_sink (adjustment);
11615   /* FIXME: Adjustment should probably be populated here with fresh values, but
11616    * internal details are too complicated for me to decipher right now.
11617    */
11618   gtk_tree_view_adjustment_changed (NULL, tree_view);
11619   g_object_notify (G_OBJECT (tree_view), "vadjustment");
11620 }
11621
11622 /* Column and header operations */
11623
11624 /**
11625  * gtk_tree_view_get_headers_visible:
11626  * @tree_view: A #GtkTreeView.
11627  *
11628  * Returns %TRUE if the headers on the @tree_view are visible.
11629  *
11630  * Return value: Whether the headers are visible or not.
11631  **/
11632 gboolean
11633 gtk_tree_view_get_headers_visible (GtkTreeView *tree_view)
11634 {
11635   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), FALSE);
11636
11637   return tree_view->priv->headers_visible;
11638 }
11639
11640 /**
11641  * gtk_tree_view_set_headers_visible:
11642  * @tree_view: A #GtkTreeView.
11643  * @headers_visible: %TRUE if the headers are visible
11644  *
11645  * Sets the visibility state of the headers.
11646  **/
11647 void
11648 gtk_tree_view_set_headers_visible (GtkTreeView *tree_view,
11649                                    gboolean     headers_visible)
11650 {
11651   gint x, y;
11652   GList *list;
11653   GtkTreeViewColumn *column;
11654   GtkAllocation allocation;
11655   GtkWidget *button;
11656
11657   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
11658
11659   headers_visible = !! headers_visible;
11660
11661   if (tree_view->priv->headers_visible == headers_visible)
11662     return;
11663
11664   tree_view->priv->headers_visible = headers_visible == TRUE;
11665
11666   if (gtk_widget_get_realized (GTK_WIDGET (tree_view)))
11667     {
11668       gdk_window_get_position (tree_view->priv->bin_window, &x, &y);
11669       if (headers_visible)
11670         {
11671           gtk_widget_get_allocation (GTK_WIDGET (tree_view), &allocation);
11672           gdk_window_move_resize (tree_view->priv->bin_window,
11673                                   x, y  + gtk_tree_view_get_effective_header_height (tree_view),
11674                                   tree_view->priv->width, allocation.height -  + gtk_tree_view_get_effective_header_height (tree_view));
11675
11676           if (gtk_widget_get_mapped (GTK_WIDGET (tree_view)))
11677             gtk_tree_view_map_buttons (tree_view);
11678         }
11679       else
11680         {
11681           gdk_window_move_resize (tree_view->priv->bin_window, x, y, tree_view->priv->width, tree_view->priv->height);
11682
11683           for (list = tree_view->priv->columns; list; list = list->next)
11684             {
11685               column = list->data;
11686               button = gtk_tree_view_column_get_button (column);
11687
11688               gtk_widget_hide (button);
11689               gtk_widget_unmap (button);
11690             }
11691           gdk_window_hide (tree_view->priv->header_window);
11692         }
11693     }
11694
11695   gtk_widget_get_allocation (GTK_WIDGET (tree_view), &allocation);
11696   gtk_adjustment_configure (tree_view->priv->vadjustment,
11697                             gtk_adjustment_get_value (tree_view->priv->vadjustment),
11698                             0,
11699                             tree_view->priv->height,
11700                             gtk_adjustment_get_step_increment (tree_view->priv->vadjustment),
11701                             (allocation.height - gtk_tree_view_get_effective_header_height (tree_view)) / 2,
11702                             allocation.height - gtk_tree_view_get_effective_header_height (tree_view));
11703
11704   gtk_widget_queue_resize (GTK_WIDGET (tree_view));
11705
11706   g_object_notify (G_OBJECT (tree_view), "headers-visible");
11707 }
11708
11709 /**
11710  * gtk_tree_view_columns_autosize:
11711  * @tree_view: A #GtkTreeView.
11712  *
11713  * Resizes all columns to their optimal width. Only works after the
11714  * treeview has been realized.
11715  **/
11716 void
11717 gtk_tree_view_columns_autosize (GtkTreeView *tree_view)
11718 {
11719   gboolean dirty = FALSE;
11720   GList *list;
11721   GtkTreeViewColumn *column;
11722
11723   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
11724
11725   for (list = tree_view->priv->columns; list; list = list->next)
11726     {
11727       column = list->data;
11728       if (gtk_tree_view_column_get_sizing (column) == GTK_TREE_VIEW_COLUMN_AUTOSIZE)
11729         continue;
11730       _gtk_tree_view_column_cell_set_dirty (column, TRUE);
11731       dirty = TRUE;
11732     }
11733
11734   if (dirty)
11735     gtk_widget_queue_resize (GTK_WIDGET (tree_view));
11736 }
11737
11738 /**
11739  * gtk_tree_view_set_headers_clickable:
11740  * @tree_view: A #GtkTreeView.
11741  * @setting: %TRUE if the columns are clickable.
11742  *
11743  * Allow the column title buttons to be clicked.
11744  **/
11745 void
11746 gtk_tree_view_set_headers_clickable (GtkTreeView *tree_view,
11747                                      gboolean   setting)
11748 {
11749   GList *list;
11750
11751   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
11752
11753   for (list = tree_view->priv->columns; list; list = list->next)
11754     gtk_tree_view_column_set_clickable (GTK_TREE_VIEW_COLUMN (list->data), setting);
11755
11756   g_object_notify (G_OBJECT (tree_view), "headers-clickable");
11757 }
11758
11759
11760 /**
11761  * gtk_tree_view_get_headers_clickable:
11762  * @tree_view: A #GtkTreeView.
11763  *
11764  * Returns whether all header columns are clickable.
11765  *
11766  * Return value: %TRUE if all header columns are clickable, otherwise %FALSE
11767  *
11768  * Since: 2.10
11769  **/
11770 gboolean
11771 gtk_tree_view_get_headers_clickable (GtkTreeView *tree_view)
11772 {
11773   GList *list;
11774
11775   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), FALSE);
11776
11777   for (list = tree_view->priv->columns; list; list = list->next)
11778     if (!gtk_tree_view_column_get_clickable (GTK_TREE_VIEW_COLUMN (list->data)))
11779       return FALSE;
11780
11781   return TRUE;
11782 }
11783
11784 /**
11785  * gtk_tree_view_set_rules_hint:
11786  * @tree_view: a #GtkTreeView
11787  * @setting: %TRUE if the tree requires reading across rows
11788  *
11789  * This function tells GTK+ that the user interface for your
11790  * application requires users to read across tree rows and associate
11791  * cells with one another. By default, GTK+ will then render the tree
11792  * with alternating row colors. Do <emphasis>not</emphasis> use it
11793  * just because you prefer the appearance of the ruled tree; that's a
11794  * question for the theme. Some themes will draw tree rows in
11795  * alternating colors even when rules are turned off, and users who
11796  * prefer that appearance all the time can choose those themes. You
11797  * should call this function only as a <emphasis>semantic</emphasis>
11798  * hint to the theme engine that your tree makes alternating colors
11799  * useful from a functional standpoint (since it has lots of columns,
11800  * generally).
11801  *
11802  **/
11803 void
11804 gtk_tree_view_set_rules_hint (GtkTreeView  *tree_view,
11805                               gboolean      setting)
11806 {
11807   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
11808
11809   setting = setting != FALSE;
11810
11811   if (tree_view->priv->has_rules != setting)
11812     {
11813       tree_view->priv->has_rules = setting;
11814       gtk_widget_queue_draw (GTK_WIDGET (tree_view));
11815     }
11816
11817   g_object_notify (G_OBJECT (tree_view), "rules-hint");
11818 }
11819
11820 /**
11821  * gtk_tree_view_get_rules_hint:
11822  * @tree_view: a #GtkTreeView
11823  *
11824  * Gets the setting set by gtk_tree_view_set_rules_hint().
11825  *
11826  * Return value: %TRUE if rules are useful for the user of this tree
11827  **/
11828 gboolean
11829 gtk_tree_view_get_rules_hint (GtkTreeView  *tree_view)
11830 {
11831   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), FALSE);
11832
11833   return tree_view->priv->has_rules;
11834 }
11835
11836
11837 /**
11838  * gtk_tree_view_set_activate_on_single_click:
11839  * @tree_view: a #GtkTreeView
11840  * @single: %TRUE to emit row-activated on a single click
11841  *
11842  * Cause the #GtkTreeView::row-activated signal to be emitted
11843  * on a single click instead of a double click.
11844  *
11845  * Since: 3.8
11846  **/
11847 void
11848 gtk_tree_view_set_activate_on_single_click (GtkTreeView *tree_view,
11849                                             gboolean     single)
11850 {
11851   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
11852
11853   single = single != FALSE;
11854
11855   if (tree_view->priv->activate_on_single_click == single)
11856     return;
11857
11858   tree_view->priv->activate_on_single_click = single;
11859   g_object_notify (G_OBJECT (tree_view), "activate-on-single-click");
11860 }
11861
11862 /**
11863  * gtk_tree_view_get_activate_on_single_click:
11864  * @tree_view: a #GtkTreeView
11865  *
11866  * Gets the setting set by gtk_tree_view_set_activate_on_single_click().
11867  *
11868  * Return value: %TRUE if row-activated will be emitted on a single click
11869  *
11870  * Since: 3.8
11871  **/
11872 gboolean
11873 gtk_tree_view_get_activate_on_single_click (GtkTreeView *tree_view)
11874 {
11875   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), FALSE);
11876
11877   return tree_view->priv->activate_on_single_click;
11878 }
11879
11880 /* Public Column functions
11881  */
11882
11883 /**
11884  * gtk_tree_view_append_column:
11885  * @tree_view: A #GtkTreeView.
11886  * @column: The #GtkTreeViewColumn to add.
11887  *
11888  * Appends @column to the list of columns. If @tree_view has "fixed_height"
11889  * mode enabled, then @column must have its "sizing" property set to be
11890  * GTK_TREE_VIEW_COLUMN_FIXED.
11891  *
11892  * Return value: The number of columns in @tree_view after appending.
11893  **/
11894 gint
11895 gtk_tree_view_append_column (GtkTreeView       *tree_view,
11896                              GtkTreeViewColumn *column)
11897 {
11898   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), -1);
11899   g_return_val_if_fail (GTK_IS_TREE_VIEW_COLUMN (column), -1);
11900   g_return_val_if_fail (gtk_tree_view_column_get_tree_view (column) == NULL, -1);
11901
11902   return gtk_tree_view_insert_column (tree_view, column, -1);
11903 }
11904
11905 void
11906 _gtk_tree_view_reset_header_styles (GtkTreeView *tree_view)
11907 {
11908   GList *columns;
11909
11910   for (columns = tree_view->priv->columns; columns; columns = columns->next)
11911     {
11912       GtkTreeViewColumn *column = columns->data;
11913       GtkWidget *header_widget;
11914
11915       if (!gtk_tree_view_column_get_visible (column))
11916         continue;
11917
11918       header_widget = gtk_tree_view_column_get_widget (column);
11919
11920       if (!header_widget)
11921         header_widget = gtk_tree_view_column_get_button (column);
11922
11923       _gtk_widget_invalidate_style_context (header_widget, GTK_CSS_CHANGE_PARENT_REGION);
11924     }
11925 }
11926
11927
11928 /**
11929  * gtk_tree_view_remove_column:
11930  * @tree_view: A #GtkTreeView.
11931  * @column: The #GtkTreeViewColumn to remove.
11932  *
11933  * Removes @column from @tree_view.
11934  *
11935  * Return value: The number of columns in @tree_view after removing.
11936  **/
11937 gint
11938 gtk_tree_view_remove_column (GtkTreeView       *tree_view,
11939                              GtkTreeViewColumn *column)
11940 {
11941   guint position;
11942
11943   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), -1);
11944   g_return_val_if_fail (GTK_IS_TREE_VIEW_COLUMN (column), -1);
11945   g_return_val_if_fail (gtk_tree_view_column_get_tree_view (column) == GTK_WIDGET (tree_view), -1);
11946
11947   if (tree_view->priv->focus_column == column)
11948     _gtk_tree_view_set_focus_column (tree_view, NULL);
11949
11950   if (tree_view->priv->edited_column == column)
11951     {
11952       gtk_tree_view_stop_editing (tree_view, TRUE);
11953
11954       /* no need to, but just to be sure ... */
11955       tree_view->priv->edited_column = NULL;
11956     }
11957
11958   if (tree_view->priv->expander_column == column)
11959     tree_view->priv->expander_column = NULL;
11960
11961   g_signal_handlers_disconnect_by_func (column,
11962                                         G_CALLBACK (column_sizing_notify),
11963                                         tree_view);
11964
11965   _gtk_tree_view_column_unset_tree_view (column);
11966
11967   position = g_list_index (tree_view->priv->columns, column);
11968
11969   tree_view->priv->columns = g_list_remove (tree_view->priv->columns, column);
11970   tree_view->priv->n_columns--;
11971
11972   if (gtk_widget_get_realized (GTK_WIDGET (tree_view)))
11973     {
11974       GList *list;
11975
11976       _gtk_tree_view_column_unrealize_button (column);
11977       for (list = tree_view->priv->columns; list; list = list->next)
11978         {
11979           GtkTreeViewColumn *tmp_column;
11980
11981           tmp_column = GTK_TREE_VIEW_COLUMN (list->data);
11982           if (gtk_tree_view_column_get_visible (tmp_column))
11983             _gtk_tree_view_column_cell_set_dirty (tmp_column, TRUE);
11984         }
11985
11986       if (tree_view->priv->n_columns == 0 &&
11987           gtk_tree_view_get_headers_visible (tree_view))
11988         gdk_window_hide (tree_view->priv->header_window);
11989
11990       gtk_widget_queue_resize (GTK_WIDGET (tree_view));
11991     }
11992
11993   _gtk_tree_view_reset_header_styles (tree_view);
11994
11995   _gtk_tree_view_accessible_remove_column (tree_view, column, position);
11996
11997   g_object_unref (column);
11998   g_signal_emit (tree_view, tree_view_signals[COLUMNS_CHANGED], 0);
11999
12000   return tree_view->priv->n_columns;
12001 }
12002
12003 /**
12004  * gtk_tree_view_insert_column:
12005  * @tree_view: A #GtkTreeView.
12006  * @column: The #GtkTreeViewColumn to be inserted.
12007  * @position: The position to insert @column in.
12008  *
12009  * This inserts the @column into the @tree_view at @position.  If @position is
12010  * -1, then the column is inserted at the end. If @tree_view has
12011  * "fixed_height" mode enabled, then @column must have its "sizing" property
12012  * set to be GTK_TREE_VIEW_COLUMN_FIXED.
12013  *
12014  * Return value: The number of columns in @tree_view after insertion.
12015  **/
12016 gint
12017 gtk_tree_view_insert_column (GtkTreeView       *tree_view,
12018                              GtkTreeViewColumn *column,
12019                              gint               position)
12020 {
12021   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), -1);
12022   g_return_val_if_fail (GTK_IS_TREE_VIEW_COLUMN (column), -1);
12023   g_return_val_if_fail (gtk_tree_view_column_get_tree_view (column) == NULL, -1);
12024
12025   if (tree_view->priv->fixed_height_mode)
12026     g_return_val_if_fail (gtk_tree_view_column_get_sizing (column)
12027                           == GTK_TREE_VIEW_COLUMN_FIXED, -1);
12028
12029   if (position < 0 || position > tree_view->priv->n_columns)
12030     position = tree_view->priv->n_columns;
12031
12032   g_object_ref_sink (column);
12033
12034   if (tree_view->priv->n_columns == 0 &&
12035       gtk_widget_get_realized (GTK_WIDGET (tree_view)) &&
12036       gtk_tree_view_get_headers_visible (tree_view))
12037     {
12038       gdk_window_show (tree_view->priv->header_window);
12039     }
12040
12041   g_signal_connect (column, "notify::sizing",
12042                     G_CALLBACK (column_sizing_notify), tree_view);
12043
12044   tree_view->priv->columns = g_list_insert (tree_view->priv->columns,
12045                                             column, position);
12046   tree_view->priv->n_columns++;
12047
12048   _gtk_tree_view_column_set_tree_view (column, tree_view);
12049
12050   if (gtk_widget_get_realized (GTK_WIDGET (tree_view)))
12051     {
12052       GList *list;
12053
12054       _gtk_tree_view_column_realize_button (column);
12055
12056       for (list = tree_view->priv->columns; list; list = list->next)
12057         {
12058           column = GTK_TREE_VIEW_COLUMN (list->data);
12059           if (gtk_tree_view_column_get_visible (column))
12060             _gtk_tree_view_column_cell_set_dirty (column, TRUE);
12061         }
12062       gtk_widget_queue_resize (GTK_WIDGET (tree_view));
12063     }
12064
12065   _gtk_tree_view_reset_header_styles (tree_view);
12066
12067   _gtk_tree_view_accessible_add_column (tree_view, column, position);
12068
12069   g_signal_emit (tree_view, tree_view_signals[COLUMNS_CHANGED], 0);
12070
12071   return tree_view->priv->n_columns;
12072 }
12073
12074 /**
12075  * gtk_tree_view_insert_column_with_attributes:
12076  * @tree_view: A #GtkTreeView
12077  * @position: The position to insert the new column in
12078  * @title: The title to set the header to
12079  * @cell: The #GtkCellRenderer
12080  * @...: A %NULL-terminated list of attributes
12081  *
12082  * Creates a new #GtkTreeViewColumn and inserts it into the @tree_view at
12083  * @position.  If @position is -1, then the newly created column is inserted at
12084  * the end.  The column is initialized with the attributes given. If @tree_view
12085  * has "fixed_height" mode enabled, then the new column will have its sizing
12086  * property set to be GTK_TREE_VIEW_COLUMN_FIXED.
12087  *
12088  * Return value: The number of columns in @tree_view after insertion.
12089  **/
12090 gint
12091 gtk_tree_view_insert_column_with_attributes (GtkTreeView     *tree_view,
12092                                              gint             position,
12093                                              const gchar     *title,
12094                                              GtkCellRenderer *cell,
12095                                              ...)
12096 {
12097   GtkTreeViewColumn *column;
12098   gchar *attribute;
12099   va_list args;
12100   gint column_id;
12101
12102   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), -1);
12103
12104   column = gtk_tree_view_column_new ();
12105   if (tree_view->priv->fixed_height_mode)
12106     gtk_tree_view_column_set_sizing (column, GTK_TREE_VIEW_COLUMN_FIXED);
12107
12108   gtk_tree_view_column_set_title (column, title);
12109   gtk_tree_view_column_pack_start (column, cell, TRUE);
12110
12111   va_start (args, cell);
12112
12113   attribute = va_arg (args, gchar *);
12114
12115   while (attribute != NULL)
12116     {
12117       column_id = va_arg (args, gint);
12118       gtk_tree_view_column_add_attribute (column, cell, attribute, column_id);
12119       attribute = va_arg (args, gchar *);
12120     }
12121
12122   va_end (args);
12123
12124   return gtk_tree_view_insert_column (tree_view, column, position);
12125 }
12126
12127 /**
12128  * gtk_tree_view_insert_column_with_data_func:
12129  * @tree_view: a #GtkTreeView
12130  * @position: Position to insert, -1 for append
12131  * @title: column title
12132  * @cell: cell renderer for column
12133  * @func: function to set attributes of cell renderer
12134  * @data: data for @func
12135  * @dnotify: destroy notifier for @data
12136  *
12137  * Convenience function that inserts a new column into the #GtkTreeView
12138  * with the given cell renderer and a #GtkTreeCellDataFunc to set cell renderer
12139  * attributes (normally using data from the model). See also
12140  * gtk_tree_view_column_set_cell_data_func(), gtk_tree_view_column_pack_start().
12141  * If @tree_view has "fixed_height" mode enabled, then the new column will have its
12142  * "sizing" property set to be GTK_TREE_VIEW_COLUMN_FIXED.
12143  *
12144  * Return value: number of columns in the tree view post-insert
12145  **/
12146 gint
12147 gtk_tree_view_insert_column_with_data_func  (GtkTreeView               *tree_view,
12148                                              gint                       position,
12149                                              const gchar               *title,
12150                                              GtkCellRenderer           *cell,
12151                                              GtkTreeCellDataFunc        func,
12152                                              gpointer                   data,
12153                                              GDestroyNotify             dnotify)
12154 {
12155   GtkTreeViewColumn *column;
12156
12157   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), -1);
12158
12159   column = gtk_tree_view_column_new ();
12160   if (tree_view->priv->fixed_height_mode)
12161     gtk_tree_view_column_set_sizing (column, GTK_TREE_VIEW_COLUMN_FIXED);
12162
12163   gtk_tree_view_column_set_title (column, title);
12164   gtk_tree_view_column_pack_start (column, cell, TRUE);
12165   gtk_tree_view_column_set_cell_data_func (column, cell, func, data, dnotify);
12166
12167   return gtk_tree_view_insert_column (tree_view, column, position);
12168 }
12169
12170 /**
12171  * gtk_tree_view_get_n_columns:
12172  * @tree_view: a #GtkTreeView
12173  *
12174  * Queries the number of columns in the given @tree_view.
12175  *
12176  * Returns: The number of columns in the @tree_view
12177  *
12178  * Since: 3.4
12179  **/
12180 guint
12181 gtk_tree_view_get_n_columns (GtkTreeView *tree_view)
12182 {
12183   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), 0);
12184
12185   return tree_view->priv->n_columns;
12186 }
12187
12188 /**
12189  * gtk_tree_view_get_column:
12190  * @tree_view: A #GtkTreeView.
12191  * @n: The position of the column, counting from 0.
12192  *
12193  * Gets the #GtkTreeViewColumn at the given position in the #tree_view.
12194  *
12195  * Return value: (transfer none): The #GtkTreeViewColumn, or %NULL if the
12196  *     position is outside the range of columns.
12197  **/
12198 GtkTreeViewColumn *
12199 gtk_tree_view_get_column (GtkTreeView *tree_view,
12200                           gint         n)
12201 {
12202   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), NULL);
12203
12204   if (n < 0 || n >= tree_view->priv->n_columns)
12205     return NULL;
12206
12207   if (tree_view->priv->columns == NULL)
12208     return NULL;
12209
12210   return GTK_TREE_VIEW_COLUMN (g_list_nth (tree_view->priv->columns, n)->data);
12211 }
12212
12213 /**
12214  * gtk_tree_view_get_columns:
12215  * @tree_view: A #GtkTreeView
12216  *
12217  * Returns a #GList of all the #GtkTreeViewColumn s currently in @tree_view.
12218  * The returned list must be freed with g_list_free ().
12219  *
12220  * Return value: (element-type GtkTreeViewColumn) (transfer container): A list of #GtkTreeViewColumn s
12221  **/
12222 GList *
12223 gtk_tree_view_get_columns (GtkTreeView *tree_view)
12224 {
12225   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), NULL);
12226
12227   return g_list_copy (tree_view->priv->columns);
12228 }
12229
12230 /**
12231  * gtk_tree_view_move_column_after:
12232  * @tree_view: A #GtkTreeView
12233  * @column: The #GtkTreeViewColumn to be moved.
12234  * @base_column: (allow-none): The #GtkTreeViewColumn to be moved relative to, or %NULL.
12235  *
12236  * Moves @column to be after to @base_column.  If @base_column is %NULL, then
12237  * @column is placed in the first position.
12238  **/
12239 void
12240 gtk_tree_view_move_column_after (GtkTreeView       *tree_view,
12241                                  GtkTreeViewColumn *column,
12242                                  GtkTreeViewColumn *base_column)
12243 {
12244   GList *column_list_el, *base_el = NULL;
12245
12246   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
12247
12248   column_list_el = g_list_find (tree_view->priv->columns, column);
12249   g_return_if_fail (column_list_el != NULL);
12250
12251   if (base_column)
12252     {
12253       base_el = g_list_find (tree_view->priv->columns, base_column);
12254       g_return_if_fail (base_el != NULL);
12255     }
12256
12257   if (column_list_el->prev == base_el)
12258     return;
12259
12260   tree_view->priv->columns = g_list_remove_link (tree_view->priv->columns, column_list_el);
12261   if (base_el == NULL)
12262     {
12263       column_list_el->prev = NULL;
12264       column_list_el->next = tree_view->priv->columns;
12265       if (column_list_el->next)
12266         column_list_el->next->prev = column_list_el;
12267       tree_view->priv->columns = column_list_el;
12268     }
12269   else
12270     {
12271       column_list_el->prev = base_el;
12272       column_list_el->next = base_el->next;
12273       if (column_list_el->next)
12274         column_list_el->next->prev = column_list_el;
12275       base_el->next = column_list_el;
12276     }
12277
12278   if (gtk_widget_get_realized (GTK_WIDGET (tree_view)))
12279     {
12280       gtk_widget_queue_resize (GTK_WIDGET (tree_view));
12281       gtk_tree_view_size_allocate_columns (GTK_WIDGET (tree_view), NULL);
12282     }
12283
12284   _gtk_tree_view_reset_header_styles (tree_view);
12285
12286   _gtk_tree_view_accessible_reorder_column (tree_view, column);
12287
12288   g_signal_emit (tree_view, tree_view_signals[COLUMNS_CHANGED], 0);
12289 }
12290
12291 /**
12292  * gtk_tree_view_set_expander_column:
12293  * @tree_view: A #GtkTreeView
12294  * @column: %NULL, or the column to draw the expander arrow at.
12295  *
12296  * Sets the column to draw the expander arrow at. It must be in @tree_view.
12297  * If @column is %NULL, then the expander arrow is always at the first
12298  * visible column.
12299  *
12300  * If you do not want expander arrow to appear in your tree, set the
12301  * expander column to a hidden column.
12302  **/
12303 void
12304 gtk_tree_view_set_expander_column (GtkTreeView       *tree_view,
12305                                    GtkTreeViewColumn *column)
12306 {
12307   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
12308   g_return_if_fail (column == NULL || GTK_IS_TREE_VIEW_COLUMN (column));
12309   g_return_if_fail (column == NULL || gtk_tree_view_column_get_tree_view (column) == GTK_WIDGET (tree_view));
12310
12311   if (tree_view->priv->expander_column != column)
12312     {
12313       tree_view->priv->expander_column = column;
12314       g_object_notify (G_OBJECT (tree_view), "expander-column");
12315     }
12316 }
12317
12318 /**
12319  * gtk_tree_view_get_expander_column:
12320  * @tree_view: A #GtkTreeView
12321  *
12322  * Returns the column that is the current expander column.
12323  * This column has the expander arrow drawn next to it.
12324  *
12325  * Return value: (transfer none): The expander column.
12326  **/
12327 GtkTreeViewColumn *
12328 gtk_tree_view_get_expander_column (GtkTreeView *tree_view)
12329 {
12330   GList *list;
12331
12332   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), NULL);
12333
12334   for (list = tree_view->priv->columns; list; list = list->next)
12335     if (gtk_tree_view_is_expander_column (tree_view, GTK_TREE_VIEW_COLUMN (list->data)))
12336       return (GtkTreeViewColumn *) list->data;
12337   return NULL;
12338 }
12339
12340
12341 /**
12342  * gtk_tree_view_set_column_drag_function:
12343  * @tree_view: A #GtkTreeView.
12344  * @func: (allow-none): A function to determine which columns are reorderable, or %NULL.
12345  * @user_data: (allow-none): User data to be passed to @func, or %NULL
12346  * @destroy: (allow-none): Destroy notifier for @user_data, or %NULL
12347  *
12348  * Sets a user function for determining where a column may be dropped when
12349  * dragged.  This function is called on every column pair in turn at the
12350  * beginning of a column drag to determine where a drop can take place.  The
12351  * arguments passed to @func are: the @tree_view, the #GtkTreeViewColumn being
12352  * dragged, the two #GtkTreeViewColumn s determining the drop spot, and
12353  * @user_data.  If either of the #GtkTreeViewColumn arguments for the drop spot
12354  * are %NULL, then they indicate an edge.  If @func is set to be %NULL, then
12355  * @tree_view reverts to the default behavior of allowing all columns to be
12356  * dropped everywhere.
12357  **/
12358 void
12359 gtk_tree_view_set_column_drag_function (GtkTreeView               *tree_view,
12360                                         GtkTreeViewColumnDropFunc  func,
12361                                         gpointer                   user_data,
12362                                         GDestroyNotify             destroy)
12363 {
12364   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
12365
12366   if (tree_view->priv->column_drop_func_data_destroy)
12367     tree_view->priv->column_drop_func_data_destroy (tree_view->priv->column_drop_func_data);
12368
12369   tree_view->priv->column_drop_func = func;
12370   tree_view->priv->column_drop_func_data = user_data;
12371   tree_view->priv->column_drop_func_data_destroy = destroy;
12372 }
12373
12374 /**
12375  * gtk_tree_view_scroll_to_point:
12376  * @tree_view: a #GtkTreeView
12377  * @tree_x: X coordinate of new top-left pixel of visible area, or -1
12378  * @tree_y: Y coordinate of new top-left pixel of visible area, or -1
12379  *
12380  * Scrolls the tree view such that the top-left corner of the visible
12381  * area is @tree_x, @tree_y, where @tree_x and @tree_y are specified
12382  * in tree coordinates.  The @tree_view must be realized before
12383  * this function is called.  If it isn't, you probably want to be
12384  * using gtk_tree_view_scroll_to_cell().
12385  *
12386  * If either @tree_x or @tree_y are -1, then that direction isn't scrolled.
12387  **/
12388 void
12389 gtk_tree_view_scroll_to_point (GtkTreeView *tree_view,
12390                                gint         tree_x,
12391                                gint         tree_y)
12392 {
12393   GtkAdjustment *hadj;
12394   GtkAdjustment *vadj;
12395
12396   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
12397   g_return_if_fail (gtk_widget_get_realized (GTK_WIDGET (tree_view)));
12398
12399   hadj = tree_view->priv->hadjustment;
12400   vadj = tree_view->priv->vadjustment;
12401
12402   if (tree_x != -1)
12403     gtk_adjustment_set_value (hadj, tree_x);
12404   if (tree_y != -1)
12405     gtk_adjustment_set_value (vadj, tree_y);
12406 }
12407
12408 /**
12409  * gtk_tree_view_scroll_to_cell:
12410  * @tree_view: A #GtkTreeView.
12411  * @path: (allow-none): The path of the row to move to, or %NULL.
12412  * @column: (allow-none): The #GtkTreeViewColumn to move horizontally to, or %NULL.
12413  * @use_align: whether to use alignment arguments, or %FALSE.
12414  * @row_align: The vertical alignment of the row specified by @path.
12415  * @col_align: The horizontal alignment of the column specified by @column.
12416  *
12417  * Moves the alignments of @tree_view to the position specified by @column and
12418  * @path.  If @column is %NULL, then no horizontal scrolling occurs.  Likewise,
12419  * if @path is %NULL no vertical scrolling occurs.  At a minimum, one of @column
12420  * or @path need to be non-%NULL.  @row_align determines where the row is
12421  * placed, and @col_align determines where @column is placed.  Both are expected
12422  * to be between 0.0 and 1.0. 0.0 means left/top alignment, 1.0 means
12423  * right/bottom alignment, 0.5 means center.
12424  *
12425  * If @use_align is %FALSE, then the alignment arguments are ignored, and the
12426  * tree does the minimum amount of work to scroll the cell onto the screen.
12427  * This means that the cell will be scrolled to the edge closest to its current
12428  * position.  If the cell is currently visible on the screen, nothing is done.
12429  *
12430  * This function only works if the model is set, and @path is a valid row on the
12431  * model.  If the model changes before the @tree_view is realized, the centered
12432  * path will be modified to reflect this change.
12433  **/
12434 void
12435 gtk_tree_view_scroll_to_cell (GtkTreeView       *tree_view,
12436                               GtkTreePath       *path,
12437                               GtkTreeViewColumn *column,
12438                               gboolean           use_align,
12439                               gfloat             row_align,
12440                               gfloat             col_align)
12441 {
12442   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
12443   g_return_if_fail (tree_view->priv->model != NULL);
12444   g_return_if_fail (tree_view->priv->tree != NULL);
12445   g_return_if_fail (row_align >= 0.0 && row_align <= 1.0);
12446   g_return_if_fail (col_align >= 0.0 && col_align <= 1.0);
12447   g_return_if_fail (path != NULL || column != NULL);
12448
12449 #if 0
12450   g_print ("gtk_tree_view_scroll_to_cell:\npath: %s\ncolumn: %s\nuse_align: %d\nrow_align: %f\ncol_align: %f\n",
12451            gtk_tree_path_to_string (path), column?"non-null":"null", use_align, row_align, col_align);
12452 #endif
12453   row_align = CLAMP (row_align, 0.0, 1.0);
12454   col_align = CLAMP (col_align, 0.0, 1.0);
12455
12456
12457   /* Note: Despite the benefits that come from having one code path for the
12458    * scrolling code, we short-circuit validate_visible_area's immplementation as
12459    * it is much slower than just going to the point.
12460    */
12461   if (!gtk_widget_get_visible (GTK_WIDGET (tree_view)) ||
12462       !gtk_widget_get_realized (GTK_WIDGET (tree_view)) ||
12463       _gtk_widget_get_alloc_needed (GTK_WIDGET (tree_view)) ||
12464       GTK_RBNODE_FLAG_SET (tree_view->priv->tree->root, GTK_RBNODE_DESCENDANTS_INVALID))
12465     {
12466       if (tree_view->priv->scroll_to_path)
12467         gtk_tree_row_reference_free (tree_view->priv->scroll_to_path);
12468
12469       tree_view->priv->scroll_to_path = NULL;
12470       tree_view->priv->scroll_to_column = NULL;
12471
12472       if (path)
12473         tree_view->priv->scroll_to_path = gtk_tree_row_reference_new_proxy (G_OBJECT (tree_view), tree_view->priv->model, path);
12474       if (column)
12475         tree_view->priv->scroll_to_column = column;
12476       tree_view->priv->scroll_to_use_align = use_align;
12477       tree_view->priv->scroll_to_row_align = row_align;
12478       tree_view->priv->scroll_to_col_align = col_align;
12479
12480       install_presize_handler (tree_view);
12481     }
12482   else
12483     {
12484       GdkRectangle cell_rect;
12485       GdkRectangle vis_rect;
12486       gint dest_x, dest_y;
12487
12488       gtk_tree_view_get_background_area (tree_view, path, column, &cell_rect);
12489       gtk_tree_view_get_visible_rect (tree_view, &vis_rect);
12490
12491       cell_rect.y = TREE_WINDOW_Y_TO_RBTREE_Y (tree_view, cell_rect.y);
12492
12493       dest_x = vis_rect.x;
12494       dest_y = vis_rect.y;
12495
12496       if (column)
12497         {
12498           if (use_align)
12499             {
12500               dest_x = cell_rect.x - ((vis_rect.width - cell_rect.width) * col_align);
12501             }
12502           else
12503             {
12504               if (cell_rect.x < vis_rect.x)
12505                 dest_x = cell_rect.x;
12506               if (cell_rect.x + cell_rect.width > vis_rect.x + vis_rect.width)
12507                 dest_x = cell_rect.x + cell_rect.width - vis_rect.width;
12508             }
12509         }
12510
12511       if (path)
12512         {
12513           if (use_align)
12514             {
12515               dest_y = cell_rect.y - ((vis_rect.height - cell_rect.height) * row_align);
12516               dest_y = MAX (dest_y, 0);
12517             }
12518           else
12519             {
12520               if (cell_rect.y < vis_rect.y)
12521                 dest_y = cell_rect.y;
12522               if (cell_rect.y + cell_rect.height > vis_rect.y + vis_rect.height)
12523                 dest_y = cell_rect.y + cell_rect.height - vis_rect.height;
12524             }
12525         }
12526
12527       gtk_tree_view_scroll_to_point (tree_view, dest_x, dest_y);
12528     }
12529 }
12530
12531 /**
12532  * gtk_tree_view_row_activated:
12533  * @tree_view: A #GtkTreeView
12534  * @path: The #GtkTreePath to be activated.
12535  * @column: The #GtkTreeViewColumn to be activated.
12536  *
12537  * Activates the cell determined by @path and @column.
12538  **/
12539 void
12540 gtk_tree_view_row_activated (GtkTreeView       *tree_view,
12541                              GtkTreePath       *path,
12542                              GtkTreeViewColumn *column)
12543 {
12544   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
12545
12546   g_signal_emit (tree_view, tree_view_signals[ROW_ACTIVATED], 0, path, column);
12547 }
12548
12549
12550 static void
12551 gtk_tree_view_expand_all_emission_helper (GtkRBTree *tree,
12552                                           GtkRBNode *node,
12553                                           gpointer   data)
12554 {
12555   GtkTreeView *tree_view = data;
12556
12557   if ((node->flags & GTK_RBNODE_IS_PARENT) == GTK_RBNODE_IS_PARENT &&
12558       node->children)
12559     {
12560       GtkTreePath *path;
12561       GtkTreeIter iter;
12562
12563       path = _gtk_tree_path_new_from_rbtree (tree, node);
12564       gtk_tree_model_get_iter (tree_view->priv->model, &iter, path);
12565
12566       g_signal_emit (tree_view, tree_view_signals[ROW_EXPANDED], 0, &iter, path);
12567
12568       gtk_tree_path_free (path);
12569     }
12570
12571   if (node->children)
12572     _gtk_rbtree_traverse (node->children,
12573                           node->children->root,
12574                           G_PRE_ORDER,
12575                           gtk_tree_view_expand_all_emission_helper,
12576                           tree_view);
12577 }
12578
12579 /**
12580  * gtk_tree_view_expand_all:
12581  * @tree_view: A #GtkTreeView.
12582  *
12583  * Recursively expands all nodes in the @tree_view.
12584  **/
12585 void
12586 gtk_tree_view_expand_all (GtkTreeView *tree_view)
12587 {
12588   GtkTreePath *path;
12589   GtkRBTree *tree;
12590   GtkRBNode *node;
12591
12592   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
12593
12594   if (tree_view->priv->tree == NULL)
12595     return;
12596
12597   path = gtk_tree_path_new_first ();
12598   _gtk_tree_view_find_node (tree_view, path, &tree, &node);
12599
12600   while (node)
12601     {
12602       gtk_tree_view_real_expand_row (tree_view, path, tree, node, TRUE, FALSE);
12603       node = _gtk_rbtree_next (tree, node);
12604       gtk_tree_path_next (path);
12605   }
12606
12607   gtk_tree_path_free (path);
12608 }
12609
12610 /**
12611  * gtk_tree_view_collapse_all:
12612  * @tree_view: A #GtkTreeView.
12613  *
12614  * Recursively collapses all visible, expanded nodes in @tree_view.
12615  **/
12616 void
12617 gtk_tree_view_collapse_all (GtkTreeView *tree_view)
12618 {
12619   GtkRBTree *tree;
12620   GtkRBNode *node;
12621   GtkTreePath *path;
12622   gint *indices;
12623
12624   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
12625
12626   if (tree_view->priv->tree == NULL)
12627     return;
12628
12629   path = gtk_tree_path_new ();
12630   gtk_tree_path_down (path);
12631   indices = gtk_tree_path_get_indices (path);
12632
12633   tree = tree_view->priv->tree;
12634   node = _gtk_rbtree_first (tree);
12635
12636   while (node)
12637     {
12638       if (node->children)
12639         gtk_tree_view_real_collapse_row (tree_view, path, tree, node, FALSE);
12640       indices[0]++;
12641       node = _gtk_rbtree_next (tree, node);
12642     }
12643
12644   gtk_tree_path_free (path);
12645 }
12646
12647 /**
12648  * gtk_tree_view_expand_to_path:
12649  * @tree_view: A #GtkTreeView.
12650  * @path: path to a row.
12651  *
12652  * Expands the row at @path. This will also expand all parent rows of
12653  * @path as necessary.
12654  *
12655  * Since: 2.2
12656  **/
12657 void
12658 gtk_tree_view_expand_to_path (GtkTreeView *tree_view,
12659                               GtkTreePath *path)
12660 {
12661   gint i, depth;
12662   gint *indices;
12663   GtkTreePath *tmp;
12664
12665   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
12666   g_return_if_fail (path != NULL);
12667
12668   depth = gtk_tree_path_get_depth (path);
12669   indices = gtk_tree_path_get_indices (path);
12670
12671   tmp = gtk_tree_path_new ();
12672   g_return_if_fail (tmp != NULL);
12673
12674   for (i = 0; i < depth; i++)
12675     {
12676       gtk_tree_path_append_index (tmp, indices[i]);
12677       gtk_tree_view_expand_row (tree_view, tmp, FALSE);
12678     }
12679
12680   gtk_tree_path_free (tmp);
12681 }
12682
12683 /* FIXME the bool return values for expand_row and collapse_row are
12684  * not analagous; they should be TRUE if the row had children and
12685  * was not already in the requested state.
12686  */
12687
12688
12689 static gboolean
12690 gtk_tree_view_real_expand_row (GtkTreeView *tree_view,
12691                                GtkTreePath *path,
12692                                GtkRBTree   *tree,
12693                                GtkRBNode   *node,
12694                                gboolean     open_all,
12695                                gboolean     animate)
12696 {
12697   GtkTreeIter iter;
12698   GtkTreeIter temp;
12699   gboolean expand;
12700
12701   if (animate)
12702     g_object_get (gtk_widget_get_settings (GTK_WIDGET (tree_view)),
12703                   "gtk-enable-animations", &animate,
12704                   NULL);
12705
12706   remove_auto_expand_timeout (tree_view);
12707
12708   if (node->children && !open_all)
12709     return FALSE;
12710
12711   if (! GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_PARENT))
12712     return FALSE;
12713
12714   gtk_tree_model_get_iter (tree_view->priv->model, &iter, path);
12715   if (! gtk_tree_model_iter_has_child (tree_view->priv->model, &iter))
12716     return FALSE;
12717
12718
12719    if (node->children && open_all)
12720     {
12721       gboolean retval = FALSE;
12722       GtkTreePath *tmp_path = gtk_tree_path_copy (path);
12723
12724       gtk_tree_path_append_index (tmp_path, 0);
12725       tree = node->children;
12726       node = _gtk_rbtree_first (tree);
12727       /* try to expand the children */
12728       do
12729         {
12730          gboolean t;
12731          t = gtk_tree_view_real_expand_row (tree_view, tmp_path, tree, node,
12732                                             TRUE, animate);
12733          if (t)
12734            retval = TRUE;
12735
12736          gtk_tree_path_next (tmp_path);
12737          node = _gtk_rbtree_next (tree, node);
12738        }
12739       while (node != NULL);
12740
12741       gtk_tree_path_free (tmp_path);
12742
12743       return retval;
12744     }
12745
12746   g_signal_emit (tree_view, tree_view_signals[TEST_EXPAND_ROW], 0, &iter, path, &expand);
12747
12748   if (!gtk_tree_model_iter_has_child (tree_view->priv->model, &iter))
12749     return FALSE;
12750
12751   if (expand)
12752     return FALSE;
12753
12754   node->children = _gtk_rbtree_new ();
12755   node->children->parent_tree = tree;
12756   node->children->parent_node = node;
12757
12758   gtk_tree_model_iter_children (tree_view->priv->model, &temp, &iter);
12759
12760   gtk_tree_view_build_tree (tree_view,
12761                             node->children,
12762                             &temp,
12763                             gtk_tree_path_get_depth (path) + 1,
12764                             open_all);
12765
12766   _gtk_tree_view_accessible_add (tree_view, node->children, NULL);
12767   _gtk_tree_view_accessible_add_state (tree_view,
12768                                        tree, node,
12769                                        GTK_CELL_RENDERER_EXPANDED);
12770
12771   install_presize_handler (tree_view);
12772
12773   g_signal_emit (tree_view, tree_view_signals[ROW_EXPANDED], 0, &iter, path);
12774   if (open_all && node->children)
12775     {
12776       _gtk_rbtree_traverse (node->children,
12777                             node->children->root,
12778                             G_PRE_ORDER,
12779                             gtk_tree_view_expand_all_emission_helper,
12780                             tree_view);
12781     }
12782   return TRUE;
12783 }
12784
12785
12786 /**
12787  * gtk_tree_view_expand_row:
12788  * @tree_view: a #GtkTreeView
12789  * @path: path to a row
12790  * @open_all: whether to recursively expand, or just expand immediate children
12791  *
12792  * Opens the row so its children are visible.
12793  *
12794  * Return value: %TRUE if the row existed and had children
12795  **/
12796 gboolean
12797 gtk_tree_view_expand_row (GtkTreeView *tree_view,
12798                           GtkTreePath *path,
12799                           gboolean     open_all)
12800 {
12801   GtkRBTree *tree;
12802   GtkRBNode *node;
12803
12804   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), FALSE);
12805   g_return_val_if_fail (tree_view->priv->model != NULL, FALSE);
12806   g_return_val_if_fail (path != NULL, FALSE);
12807
12808   if (_gtk_tree_view_find_node (tree_view,
12809                                 path,
12810                                 &tree,
12811                                 &node))
12812     return FALSE;
12813
12814   if (tree != NULL)
12815     return gtk_tree_view_real_expand_row (tree_view, path, tree, node, open_all, FALSE);
12816   else
12817     return FALSE;
12818 }
12819
12820 static gboolean
12821 gtk_tree_view_real_collapse_row (GtkTreeView *tree_view,
12822                                  GtkTreePath *path,
12823                                  GtkRBTree   *tree,
12824                                  GtkRBNode   *node,
12825                                  gboolean     animate)
12826 {
12827   GtkTreeIter iter;
12828   GtkTreeIter children;
12829   gboolean collapse;
12830   gint x, y;
12831   GList *list;
12832   GdkWindow *child;
12833   gboolean selection_changed, cursor_changed;
12834
12835   if (animate)
12836     g_object_get (gtk_widget_get_settings (GTK_WIDGET (tree_view)),
12837                   "gtk-enable-animations", &animate,
12838                   NULL);
12839
12840   remove_auto_expand_timeout (tree_view);
12841
12842   if (node->children == NULL)
12843     return FALSE;
12844   gtk_tree_model_get_iter (tree_view->priv->model, &iter, path);
12845
12846   g_signal_emit (tree_view, tree_view_signals[TEST_COLLAPSE_ROW], 0, &iter, path, &collapse);
12847
12848   if (collapse)
12849     return FALSE;
12850
12851   /* if the prelighted node is a child of us, we want to unprelight it.  We have
12852    * a chance to prelight the correct node below */
12853
12854   if (tree_view->priv->prelight_tree)
12855     {
12856       GtkRBTree *parent_tree;
12857       GtkRBNode *parent_node;
12858
12859       parent_tree = tree_view->priv->prelight_tree->parent_tree;
12860       parent_node = tree_view->priv->prelight_tree->parent_node;
12861       while (parent_tree)
12862         {
12863           if (parent_tree == tree && parent_node == node)
12864             {
12865               ensure_unprelighted (tree_view);
12866               break;
12867             }
12868           parent_node = parent_tree->parent_node;
12869           parent_tree = parent_tree->parent_tree;
12870         }
12871     }
12872
12873   TREE_VIEW_INTERNAL_ASSERT (gtk_tree_model_iter_children (tree_view->priv->model, &children, &iter), FALSE);
12874
12875   for (list = tree_view->priv->columns; list; list = list->next)
12876     {
12877       GtkTreeViewColumn *column = list->data;
12878
12879       if (gtk_tree_view_column_get_visible (column) == FALSE)
12880         continue;
12881       if (gtk_tree_view_column_get_sizing (column) == GTK_TREE_VIEW_COLUMN_AUTOSIZE)
12882         _gtk_tree_view_column_cell_set_dirty (column, TRUE);
12883     }
12884
12885   if (tree_view->priv->destroy_count_func)
12886     {
12887       GtkTreePath *child_path;
12888       gint child_count = 0;
12889       child_path = gtk_tree_path_copy (path);
12890       gtk_tree_path_down (child_path);
12891       if (node->children)
12892         _gtk_rbtree_traverse (node->children, node->children->root, G_POST_ORDER, count_children_helper, &child_count);
12893       tree_view->priv->destroy_count_func (tree_view, child_path, child_count, tree_view->priv->destroy_count_data);
12894       gtk_tree_path_free (child_path);
12895     }
12896
12897   if (tree_view->priv->cursor_node)
12898     {
12899       cursor_changed = (node->children == tree_view->priv->cursor_tree)
12900                        || _gtk_rbtree_contains (node->children, tree_view->priv->cursor_tree);
12901     }
12902   else
12903     cursor_changed = FALSE;
12904
12905   if (gtk_tree_row_reference_valid (tree_view->priv->anchor))
12906     {
12907       GtkTreePath *anchor_path = gtk_tree_row_reference_get_path (tree_view->priv->anchor);
12908       if (gtk_tree_path_is_ancestor (path, anchor_path))
12909         {
12910           gtk_tree_row_reference_free (tree_view->priv->anchor);
12911           tree_view->priv->anchor = NULL;
12912         }
12913       gtk_tree_path_free (anchor_path);
12914     }
12915
12916   selection_changed = gtk_tree_view_unref_and_check_selection_tree (tree_view, node->children);
12917
12918   /* Stop a pending double click */
12919   tree_view->priv->last_button_x = -1;
12920   tree_view->priv->last_button_y = -1;
12921
12922   _gtk_tree_view_accessible_remove (tree_view, node->children, NULL);
12923   _gtk_tree_view_accessible_remove_state (tree_view,
12924                                           tree, node,
12925                                           GTK_CELL_RENDERER_EXPANDED);
12926
12927   _gtk_rbtree_remove (node->children);
12928
12929   if (cursor_changed)
12930     gtk_tree_view_real_set_cursor (tree_view, path, CLEAR_AND_SELECT | CURSOR_INVALID);
12931   if (selection_changed)
12932     g_signal_emit_by_name (tree_view->priv->selection, "changed");
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_accessible_remove_state (tree_view,
13168                                               tree_view->priv->cursor_tree,
13169                                               tree_view->priv->cursor_node,
13170                                               GTK_CELL_RENDERER_FOCUSED);
13171       _gtk_tree_view_queue_draw_node (tree_view,
13172                                       tree_view->priv->cursor_tree,
13173                                       tree_view->priv->cursor_node,
13174                                       NULL);
13175     }
13176
13177   /* One cannot set the cursor on a separator.   Also, if
13178    * _gtk_tree_view_find_node returns TRUE, it ran out of tree
13179    * before finding the tree and node belonging to path.  The
13180    * path maps to a non-existing path and we will silently bail out.
13181    * We unset tree and node to avoid further processing.
13182    */
13183   if (path == NULL ||
13184       row_is_separator (tree_view, NULL, path)
13185       || _gtk_tree_view_find_node (tree_view,
13186                                    path,
13187                                    &tree_view->priv->cursor_tree,
13188                                    &tree_view->priv->cursor_node))
13189     {
13190       tree_view->priv->cursor_tree = NULL;
13191       tree_view->priv->cursor_node = NULL;
13192     }
13193
13194   if (tree_view->priv->cursor_node != NULL)
13195     {
13196       GtkRBTree *new_tree = NULL;
13197       GtkRBNode *new_node = NULL;
13198
13199       if ((flags & CLEAR_AND_SELECT) && !tree_view->priv->modify_selection_pressed)
13200         {
13201           GtkTreeSelectMode mode = 0;
13202
13203           if (tree_view->priv->extend_selection_pressed)
13204             mode |= GTK_TREE_SELECT_MODE_EXTEND;
13205
13206           _gtk_tree_selection_internal_select_node (tree_view->priv->selection,
13207                                                     tree_view->priv->cursor_node,
13208                                                     tree_view->priv->cursor_tree,
13209                                                     path,
13210                                                     mode,
13211                                                     FALSE);
13212         }
13213
13214       /* We have to re-find tree and node here again, somebody might have
13215        * cleared the node or the whole tree in the GtkTreeSelection::changed
13216        * callback. If the nodes differ we bail out here.
13217        */
13218       _gtk_tree_view_find_node (tree_view, path, &new_tree, &new_node);
13219
13220       if (tree_view->priv->cursor_node != new_node)
13221         return;
13222
13223       if (flags & CLAMP_NODE)
13224         {
13225           gtk_tree_view_clamp_node_visible (tree_view,
13226                                             tree_view->priv->cursor_tree,
13227                                             tree_view->priv->cursor_node);
13228           _gtk_tree_view_queue_draw_node (tree_view,
13229                                           tree_view->priv->cursor_tree,
13230                                           tree_view->priv->cursor_node,
13231                                           NULL);
13232         }
13233
13234       _gtk_tree_view_accessible_add_state (tree_view,
13235                                            tree_view->priv->cursor_tree,
13236                                            tree_view->priv->cursor_node,
13237                                            GTK_CELL_RENDERER_FOCUSED);
13238     }
13239
13240   g_signal_emit (tree_view, tree_view_signals[CURSOR_CHANGED], 0);
13241 }
13242
13243 /**
13244  * gtk_tree_view_get_cursor:
13245  * @tree_view: A #GtkTreeView
13246  * @path: (out) (transfer full) (allow-none): A pointer to be filled with the current cursor path, or %NULL
13247  * @focus_column: (out) (transfer none) (allow-none): A pointer to be filled with the current focus column, or %NULL
13248  *
13249  * Fills in @path and @focus_column with the current path and focus column.  If
13250  * the cursor isn't currently set, then *@path will be %NULL.  If no column
13251  * currently has focus, then *@focus_column will be %NULL.
13252  *
13253  * The returned #GtkTreePath must be freed with gtk_tree_path_free() when
13254  * you are done with it.
13255  **/
13256 void
13257 gtk_tree_view_get_cursor (GtkTreeView        *tree_view,
13258                           GtkTreePath       **path,
13259                           GtkTreeViewColumn **focus_column)
13260 {
13261   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
13262
13263   if (path)
13264     {
13265       if (tree_view->priv->cursor_node)
13266         *path = _gtk_tree_path_new_from_rbtree (tree_view->priv->cursor_tree,
13267                                                 tree_view->priv->cursor_node);
13268       else
13269         *path = NULL;
13270     }
13271
13272   if (focus_column)
13273     {
13274       *focus_column = tree_view->priv->focus_column;
13275     }
13276 }
13277
13278 /**
13279  * gtk_tree_view_set_cursor:
13280  * @tree_view: A #GtkTreeView
13281  * @path: A #GtkTreePath
13282  * @focus_column: (allow-none): A #GtkTreeViewColumn, or %NULL
13283  * @start_editing: %TRUE if the specified cell should start being edited.
13284  *
13285  * Sets the current keyboard focus to be at @path, and selects it.  This is
13286  * useful when you want to focus the user's attention on a particular row.  If
13287  * @focus_column is not %NULL, then focus is given to the column specified by
13288  * it. Additionally, if @focus_column is specified, and @start_editing is
13289  * %TRUE, then editing should be started in the specified cell.
13290  * This function is often followed by @gtk_widget_grab_focus (@tree_view)
13291  * in order to give keyboard focus to the widget.  Please note that editing
13292  * can only happen when the widget is realized.
13293  *
13294  * If @path is invalid for @model, the current cursor (if any) will be unset
13295  * and the function will return without failing.
13296  **/
13297 void
13298 gtk_tree_view_set_cursor (GtkTreeView       *tree_view,
13299                           GtkTreePath       *path,
13300                           GtkTreeViewColumn *focus_column,
13301                           gboolean           start_editing)
13302 {
13303   gtk_tree_view_set_cursor_on_cell (tree_view, path, focus_column,
13304                                     NULL, start_editing);
13305 }
13306
13307 /**
13308  * gtk_tree_view_set_cursor_on_cell:
13309  * @tree_view: A #GtkTreeView
13310  * @path: A #GtkTreePath
13311  * @focus_column: (allow-none): A #GtkTreeViewColumn, or %NULL
13312  * @focus_cell: (allow-none): A #GtkCellRenderer, or %NULL
13313  * @start_editing: %TRUE if the specified cell should start being edited.
13314  *
13315  * Sets the current keyboard focus to be at @path, and selects it.  This is
13316  * useful when you want to focus the user's attention on a particular row.  If
13317  * @focus_column is not %NULL, then focus is given to the column specified by
13318  * it. If @focus_column and @focus_cell are not %NULL, and @focus_column
13319  * contains 2 or more editable or activatable cells, then focus is given to
13320  * the cell specified by @focus_cell. Additionally, if @focus_column is
13321  * specified, and @start_editing is %TRUE, then editing should be started in
13322  * the specified cell.  This function is often followed by
13323  * @gtk_widget_grab_focus (@tree_view) in order to give keyboard focus to the
13324  * widget.  Please note that editing can only happen when the widget is
13325  * realized.
13326  *
13327  * If @path is invalid for @model, the current cursor (if any) will be unset
13328  * and the function will return without failing.
13329  *
13330  * Since: 2.2
13331  **/
13332 void
13333 gtk_tree_view_set_cursor_on_cell (GtkTreeView       *tree_view,
13334                                   GtkTreePath       *path,
13335                                   GtkTreeViewColumn *focus_column,
13336                                   GtkCellRenderer   *focus_cell,
13337                                   gboolean           start_editing)
13338 {
13339   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
13340   g_return_if_fail (path != NULL);
13341   g_return_if_fail (focus_column == NULL || GTK_IS_TREE_VIEW_COLUMN (focus_column));
13342
13343   if (!tree_view->priv->model)
13344     return;
13345
13346   if (focus_cell)
13347     {
13348       g_return_if_fail (focus_column);
13349       g_return_if_fail (GTK_IS_CELL_RENDERER (focus_cell));
13350     }
13351
13352   /* cancel the current editing, if it exists */
13353   if (tree_view->priv->edited_column &&
13354       gtk_cell_area_get_edit_widget
13355       (gtk_cell_layout_get_area (GTK_CELL_LAYOUT (tree_view->priv->edited_column))))
13356     gtk_tree_view_stop_editing (tree_view, TRUE);
13357
13358   gtk_tree_view_real_set_cursor (tree_view, path, CLEAR_AND_SELECT | CLAMP_NODE);
13359
13360   if (focus_column &&
13361       gtk_tree_view_column_get_visible (focus_column))
13362     {
13363       GList *list;
13364       gboolean column_in_tree = FALSE;
13365
13366       for (list = tree_view->priv->columns; list; list = list->next)
13367         if (list->data == focus_column)
13368           {
13369             column_in_tree = TRUE;
13370             break;
13371           }
13372       g_return_if_fail (column_in_tree);
13373       _gtk_tree_view_set_focus_column (tree_view, focus_column);
13374       if (focus_cell)
13375         gtk_tree_view_column_focus_cell (focus_column, focus_cell);
13376       if (start_editing)
13377         gtk_tree_view_start_editing (tree_view, path, TRUE);
13378     }
13379 }
13380
13381 /**
13382  * gtk_tree_view_get_bin_window:
13383  * @tree_view: A #GtkTreeView
13384  *
13385  * Returns the window that @tree_view renders to.
13386  * This is used primarily to compare to <literal>event->window</literal>
13387  * to confirm that the event on @tree_view is on the right window.
13388  *
13389  * Return value: (transfer none): A #GdkWindow, or %NULL when @tree_view
13390  *     hasn't been realized yet
13391  **/
13392 GdkWindow *
13393 gtk_tree_view_get_bin_window (GtkTreeView *tree_view)
13394 {
13395   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), NULL);
13396
13397   return tree_view->priv->bin_window;
13398 }
13399
13400 /**
13401  * gtk_tree_view_get_path_at_pos:
13402  * @tree_view: A #GtkTreeView.
13403  * @x: The x position to be identified (relative to bin_window).
13404  * @y: The y position to be identified (relative to bin_window).
13405  * @path: (out) (allow-none): A pointer to a #GtkTreePath pointer to be filled in, or %NULL
13406  * @column: (out) (transfer none) (allow-none): A pointer to a #GtkTreeViewColumn pointer to be filled in, or %NULL
13407  * @cell_x: (out) (allow-none): A pointer where the X coordinate relative to the cell can be placed, or %NULL
13408  * @cell_y: (out) (allow-none): A pointer where the Y coordinate relative to the cell can be placed, or %NULL
13409  *
13410  * Finds the path at the point (@x, @y), relative to bin_window coordinates
13411  * (please see gtk_tree_view_get_bin_window()).
13412  * That is, @x and @y are relative to an events coordinates. @x and @y must
13413  * come from an event on the @tree_view only where <literal>event->window ==
13414  * gtk_tree_view_get_bin_window (<!-- -->)</literal>. It is primarily for
13415  * things like popup menus. If @path is non-%NULL, then it will be filled
13416  * with the #GtkTreePath at that point.  This path should be freed with
13417  * gtk_tree_path_free().  If @column is non-%NULL, then it will be filled
13418  * with the column at that point.  @cell_x and @cell_y return the coordinates
13419  * relative to the cell background (i.e. the @background_area passed to
13420  * gtk_cell_renderer_render()).  This function is only meaningful if
13421  * @tree_view is realized.  Therefore this function will always return %FALSE
13422  * if @tree_view is not realized or does not have a model.
13423  *
13424  * For converting widget coordinates (eg. the ones you get from
13425  * GtkWidget::query-tooltip), please see
13426  * gtk_tree_view_convert_widget_to_bin_window_coords().
13427  *
13428  * Return value: %TRUE if a row exists at that coordinate.
13429  **/
13430 gboolean
13431 gtk_tree_view_get_path_at_pos (GtkTreeView        *tree_view,
13432                                gint                x,
13433                                gint                y,
13434                                GtkTreePath       **path,
13435                                GtkTreeViewColumn **column,
13436                                gint               *cell_x,
13437                                gint               *cell_y)
13438 {
13439   GtkRBTree *tree;
13440   GtkRBNode *node;
13441   gint y_offset;
13442
13443   g_return_val_if_fail (tree_view != NULL, FALSE);
13444
13445   if (path)
13446     *path = NULL;
13447   if (column)
13448     *column = NULL;
13449
13450   if (tree_view->priv->bin_window == NULL)
13451     return FALSE;
13452
13453   if (tree_view->priv->tree == NULL)
13454     return FALSE;
13455
13456   if (x > gtk_adjustment_get_upper (tree_view->priv->hadjustment))
13457     return FALSE;
13458
13459   if (x < 0 || y < 0)
13460     return FALSE;
13461
13462   if (column || cell_x)
13463     {
13464       GtkTreeViewColumn *tmp_column;
13465       GtkTreeViewColumn *last_column = NULL;
13466       GList *list;
13467       gint remaining_x = x;
13468       gboolean found = FALSE;
13469       gboolean rtl;
13470       gint width;
13471
13472       rtl = (gtk_widget_get_direction (GTK_WIDGET (tree_view)) == GTK_TEXT_DIR_RTL);
13473       for (list = (rtl ? g_list_last (tree_view->priv->columns) : g_list_first (tree_view->priv->columns));
13474            list;
13475            list = (rtl ? list->prev : list->next))
13476         {
13477           tmp_column = list->data;
13478
13479           if (gtk_tree_view_column_get_visible (tmp_column) == FALSE)
13480             continue;
13481
13482           last_column = tmp_column;
13483           width = gtk_tree_view_column_get_width (tmp_column);
13484           if (remaining_x <= width)
13485             {
13486               found = TRUE;
13487
13488               if (column)
13489                 *column = tmp_column;
13490
13491               if (cell_x)
13492                 *cell_x = remaining_x;
13493
13494               break;
13495             }
13496           remaining_x -= width;
13497         }
13498
13499       /* If found is FALSE and there is a last_column, then it the remainder
13500        * space is in that area
13501        */
13502       if (!found)
13503         {
13504           if (last_column)
13505             {
13506               if (column)
13507                 *column = last_column;
13508
13509               if (cell_x)
13510                 *cell_x = gtk_tree_view_column_get_width (last_column) + remaining_x;
13511             }
13512           else
13513             {
13514               return FALSE;
13515             }
13516         }
13517     }
13518
13519   y_offset = _gtk_rbtree_find_offset (tree_view->priv->tree,
13520                                       TREE_WINDOW_Y_TO_RBTREE_Y (tree_view, y),
13521                                       &tree, &node);
13522
13523   if (tree == NULL)
13524     return FALSE;
13525
13526   if (cell_y)
13527     *cell_y = y_offset;
13528
13529   if (path)
13530     *path = _gtk_tree_path_new_from_rbtree (tree, node);
13531
13532   return TRUE;
13533 }
13534
13535
13536 static inline gint
13537 gtk_tree_view_get_cell_area_height (GtkTreeView *tree_view,
13538                                     GtkRBNode   *node,
13539                                     gint         vertical_separator)
13540 {
13541   int expander_size = gtk_tree_view_get_expander_size (tree_view);
13542   int height;
13543
13544   /* The "cell" areas are the cell_area passed in to gtk_cell_renderer_render(),
13545    * i.e. just the cells, no spacing.
13546    *
13547    * The cell area height is at least expander_size - vertical_separator.
13548    * For regular nodes, the height is then at least expander_size. We should
13549    * be able to enforce the expander_size minimum here, because this
13550    * function will not be called for irregular (e.g. separator) rows.
13551    */
13552   height = gtk_tree_view_get_row_height (tree_view, node);
13553   if (height < expander_size)
13554     height = expander_size;
13555
13556   return height - vertical_separator;
13557 }
13558
13559 static inline gint
13560 gtk_tree_view_get_cell_area_y_offset (GtkTreeView *tree_view,
13561                                       GtkRBTree   *tree,
13562                                       GtkRBNode   *node,
13563                                       gint         vertical_separator)
13564 {
13565   int offset;
13566
13567   offset = gtk_tree_view_get_row_y_offset (tree_view, tree, node);
13568   offset += vertical_separator / 2;
13569
13570   return offset;
13571 }
13572
13573 /**
13574  * gtk_tree_view_get_cell_area:
13575  * @tree_view: a #GtkTreeView
13576  * @path: (allow-none): a #GtkTreePath for the row, or %NULL to get only horizontal coordinates
13577  * @column: (allow-none): a #GtkTreeViewColumn for the column, or %NULL to get only vertical coordinates
13578  * @rect: (out): rectangle to fill with cell rect
13579  *
13580  * Fills the bounding rectangle in bin_window coordinates for the cell at the
13581  * row specified by @path and the column specified by @column.  If @path is
13582  * %NULL, or points to a path not currently displayed, the @y and @height fields
13583  * of the rectangle will be filled with 0. If @column is %NULL, the @x and @width
13584  * fields will be filled with 0.  The sum of all cell rects does not cover the
13585  * entire tree; there are extra pixels in between rows, for example. The
13586  * returned rectangle is equivalent to the @cell_area passed to
13587  * gtk_cell_renderer_render().  This function is only valid if @tree_view is
13588  * realized.
13589  **/
13590 void
13591 gtk_tree_view_get_cell_area (GtkTreeView        *tree_view,
13592                              GtkTreePath        *path,
13593                              GtkTreeViewColumn  *column,
13594                              GdkRectangle       *rect)
13595 {
13596   GtkRBTree *tree = NULL;
13597   GtkRBNode *node = NULL;
13598   gint vertical_separator;
13599   gint horizontal_separator;
13600
13601   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
13602   g_return_if_fail (column == NULL || GTK_IS_TREE_VIEW_COLUMN (column));
13603   g_return_if_fail (rect != NULL);
13604   g_return_if_fail (!column || gtk_tree_view_column_get_tree_view (column) == (GtkWidget *) tree_view);
13605   g_return_if_fail (gtk_widget_get_realized (GTK_WIDGET (tree_view)));
13606
13607   gtk_widget_style_get (GTK_WIDGET (tree_view),
13608                         "vertical-separator", &vertical_separator,
13609                         "horizontal-separator", &horizontal_separator,
13610                         NULL);
13611
13612   rect->x = 0;
13613   rect->y = 0;
13614   rect->width = 0;
13615   rect->height = 0;
13616
13617   if (column)
13618     {
13619       rect->x = gtk_tree_view_column_get_x_offset (column) + horizontal_separator/2;
13620       rect->width = gtk_tree_view_column_get_width (column) - horizontal_separator;
13621     }
13622
13623   if (path)
13624     {
13625       gboolean ret = _gtk_tree_view_find_node (tree_view, path, &tree, &node);
13626
13627       /* Get vertical coords */
13628       if ((!ret && tree == NULL) || ret)
13629         return;
13630
13631       if (row_is_separator (tree_view, NULL, path))
13632         {
13633           /* There isn't really a "cell area" for separator, so we
13634            * return the y, height values for background area instead.
13635            */
13636           rect->y = gtk_tree_view_get_row_y_offset (tree_view, tree, node);
13637           rect->height = gtk_tree_view_get_row_height (tree_view, node);
13638         }
13639       else
13640         {
13641           rect->y = gtk_tree_view_get_cell_area_y_offset (tree_view, tree, node,
13642                                                           vertical_separator);
13643           rect->height = gtk_tree_view_get_cell_area_height (tree_view, node,
13644                                                              vertical_separator);
13645         }
13646
13647       if (column &&
13648           gtk_tree_view_is_expander_column (tree_view, column))
13649         {
13650           gint depth = gtk_tree_path_get_depth (path);
13651           gboolean rtl;
13652
13653           rtl = gtk_widget_get_direction (GTK_WIDGET (tree_view)) == GTK_TEXT_DIR_RTL;
13654
13655           if (!rtl)
13656             rect->x += (depth - 1) * tree_view->priv->level_indentation;
13657           rect->width -= (depth - 1) * tree_view->priv->level_indentation;
13658
13659           if (gtk_tree_view_draw_expanders (tree_view))
13660             {
13661               int expander_size = gtk_tree_view_get_expander_size (tree_view);
13662               if (!rtl)
13663                 rect->x += depth * expander_size;
13664               rect->width -= depth * expander_size;
13665             }
13666
13667           rect->width = MAX (rect->width, 0);
13668         }
13669     }
13670 }
13671
13672 static inline gint
13673 gtk_tree_view_get_row_height (GtkTreeView *tree_view,
13674                               GtkRBNode   *node)
13675 {
13676   int expander_size = gtk_tree_view_get_expander_size (tree_view);
13677   int height;
13678
13679   /* The "background" areas of all rows/cells add up to cover the entire tree.
13680    * The background includes all inter-row and inter-cell spacing.
13681    *
13682    * If the row pointed at by node does not have a height set, we default
13683    * to expander_size, which is the minimum height for regular nodes.
13684    * Non-regular nodes (e.g. separators) can have a height set smaller
13685    * than expander_size and should not be overruled here.
13686    */
13687   height = GTK_RBNODE_GET_HEIGHT (node);
13688   if (height <= 0)
13689     height = expander_size;
13690
13691   return height;
13692 }
13693
13694 static inline gint
13695 gtk_tree_view_get_row_y_offset (GtkTreeView *tree_view,
13696                                 GtkRBTree   *tree,
13697                                 GtkRBNode   *node)
13698 {
13699   int offset;
13700
13701   offset = _gtk_rbtree_node_find_offset (tree, node);
13702
13703   return RBTREE_Y_TO_TREE_WINDOW_Y (tree_view, offset);
13704 }
13705
13706 /**
13707  * gtk_tree_view_get_background_area:
13708  * @tree_view: a #GtkTreeView
13709  * @path: (allow-none): a #GtkTreePath for the row, or %NULL to get only horizontal coordinates
13710  * @column: (allow-none): a #GtkTreeViewColumn for the column, or %NULL to get only vertical coordiantes
13711  * @rect: (out): rectangle to fill with cell background rect
13712  *
13713  * Fills the bounding rectangle in bin_window coordinates for the cell at the
13714  * row specified by @path and the column specified by @column.  If @path is
13715  * %NULL, or points to a node not found in the tree, the @y and @height fields of
13716  * the rectangle will be filled with 0. If @column is %NULL, the @x and @width
13717  * fields will be filled with 0.  The returned rectangle is equivalent to the
13718  * @background_area passed to gtk_cell_renderer_render().  These background
13719  * areas tile to cover the entire bin window.  Contrast with the @cell_area,
13720  * returned by gtk_tree_view_get_cell_area(), which returns only the cell
13721  * itself, excluding surrounding borders and the tree expander area.
13722  *
13723  **/
13724 void
13725 gtk_tree_view_get_background_area (GtkTreeView        *tree_view,
13726                                    GtkTreePath        *path,
13727                                    GtkTreeViewColumn  *column,
13728                                    GdkRectangle       *rect)
13729 {
13730   GtkRBTree *tree = NULL;
13731   GtkRBNode *node = NULL;
13732
13733   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
13734   g_return_if_fail (column == NULL || GTK_IS_TREE_VIEW_COLUMN (column));
13735   g_return_if_fail (rect != NULL);
13736
13737   rect->x = 0;
13738   rect->y = 0;
13739   rect->width = 0;
13740   rect->height = 0;
13741
13742   if (path)
13743     {
13744       /* Get vertical coords */
13745
13746       if (!_gtk_tree_view_find_node (tree_view, path, &tree, &node) &&
13747           tree == NULL)
13748         return;
13749
13750       rect->y = gtk_tree_view_get_row_y_offset (tree_view, tree, node);
13751       rect->height = gtk_tree_view_get_row_height (tree_view, node);
13752     }
13753
13754   if (column)
13755     {
13756       gint x2 = 0;
13757
13758       gtk_tree_view_get_background_xrange (tree_view, tree, column, &rect->x, &x2);
13759       rect->width = x2 - rect->x;
13760     }
13761 }
13762
13763 /**
13764  * gtk_tree_view_get_visible_rect:
13765  * @tree_view: a #GtkTreeView
13766  * @visible_rect: (out): rectangle to fill
13767  *
13768  * Fills @visible_rect with the currently-visible region of the
13769  * buffer, in tree coordinates. Convert to bin_window coordinates with
13770  * gtk_tree_view_convert_tree_to_bin_window_coords().
13771  * Tree coordinates start at 0,0 for row 0 of the tree, and cover the entire
13772  * scrollable area of the tree.
13773  **/
13774 void
13775 gtk_tree_view_get_visible_rect (GtkTreeView  *tree_view,
13776                                 GdkRectangle *visible_rect)
13777 {
13778   GtkAllocation allocation;
13779   GtkWidget *widget;
13780
13781   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
13782
13783   widget = GTK_WIDGET (tree_view);
13784
13785   if (visible_rect)
13786     {
13787       gtk_widget_get_allocation (widget, &allocation);
13788       visible_rect->x = gtk_adjustment_get_value (tree_view->priv->hadjustment);
13789       visible_rect->y = gtk_adjustment_get_value (tree_view->priv->vadjustment);
13790       visible_rect->width = allocation.width;
13791       visible_rect->height = allocation.height - gtk_tree_view_get_effective_header_height (tree_view);
13792     }
13793 }
13794
13795 /**
13796  * gtk_tree_view_convert_widget_to_tree_coords:
13797  * @tree_view: a #GtkTreeView
13798  * @wx: X coordinate relative to the widget
13799  * @wy: Y coordinate relative to the widget
13800  * @tx: (out): return location for tree X coordinate
13801  * @ty: (out): return location for tree Y coordinate
13802  *
13803  * Converts widget coordinates to coordinates for the
13804  * tree (the full scrollable area of the tree).
13805  *
13806  * Since: 2.12
13807  **/
13808 void
13809 gtk_tree_view_convert_widget_to_tree_coords (GtkTreeView *tree_view,
13810                                              gint         wx,
13811                                              gint         wy,
13812                                              gint        *tx,
13813                                              gint        *ty)
13814 {
13815   gint x, y;
13816
13817   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
13818
13819   gtk_tree_view_convert_widget_to_bin_window_coords (tree_view,
13820                                                      wx, wy,
13821                                                      &x, &y);
13822   gtk_tree_view_convert_bin_window_to_tree_coords (tree_view,
13823                                                    x, y,
13824                                                    tx, ty);
13825 }
13826
13827 /**
13828  * gtk_tree_view_convert_tree_to_widget_coords:
13829  * @tree_view: a #GtkTreeView
13830  * @tx: X coordinate relative to the tree
13831  * @ty: Y coordinate relative to the tree
13832  * @wx: (out): return location for widget X coordinate
13833  * @wy: (out): return location for widget Y coordinate
13834  *
13835  * Converts tree coordinates (coordinates in full scrollable area of the tree)
13836  * to widget coordinates.
13837  *
13838  * Since: 2.12
13839  **/
13840 void
13841 gtk_tree_view_convert_tree_to_widget_coords (GtkTreeView *tree_view,
13842                                              gint         tx,
13843                                              gint         ty,
13844                                              gint        *wx,
13845                                              gint        *wy)
13846 {
13847   gint x, y;
13848
13849   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
13850
13851   gtk_tree_view_convert_tree_to_bin_window_coords (tree_view,
13852                                                    tx, ty,
13853                                                    &x, &y);
13854   gtk_tree_view_convert_bin_window_to_widget_coords (tree_view,
13855                                                      x, y,
13856                                                      wx, wy);
13857 }
13858
13859 /**
13860  * gtk_tree_view_convert_widget_to_bin_window_coords:
13861  * @tree_view: a #GtkTreeView
13862  * @wx: X coordinate relative to the widget
13863  * @wy: Y coordinate relative to the widget
13864  * @bx: (out): return location for bin_window X coordinate
13865  * @by: (out): return location for bin_window Y coordinate
13866  *
13867  * Converts widget coordinates to coordinates for the bin_window
13868  * (see gtk_tree_view_get_bin_window()).
13869  *
13870  * Since: 2.12
13871  **/
13872 void
13873 gtk_tree_view_convert_widget_to_bin_window_coords (GtkTreeView *tree_view,
13874                                                    gint         wx,
13875                                                    gint         wy,
13876                                                    gint        *bx,
13877                                                    gint        *by)
13878 {
13879   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
13880
13881   if (bx)
13882     *bx = wx + gtk_adjustment_get_value (tree_view->priv->hadjustment);
13883   if (by)
13884     *by = wy - gtk_tree_view_get_effective_header_height (tree_view);
13885 }
13886
13887 /**
13888  * gtk_tree_view_convert_bin_window_to_widget_coords:
13889  * @tree_view: a #GtkTreeView
13890  * @bx: bin_window X coordinate
13891  * @by: bin_window Y coordinate
13892  * @wx: (out): return location for widget X coordinate
13893  * @wy: (out): return location for widget Y coordinate
13894  *
13895  * Converts bin_window coordinates (see gtk_tree_view_get_bin_window())
13896  * to widget relative coordinates.
13897  *
13898  * Since: 2.12
13899  **/
13900 void
13901 gtk_tree_view_convert_bin_window_to_widget_coords (GtkTreeView *tree_view,
13902                                                    gint         bx,
13903                                                    gint         by,
13904                                                    gint        *wx,
13905                                                    gint        *wy)
13906 {
13907   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
13908
13909   if (wx)
13910     *wx = bx - gtk_adjustment_get_value (tree_view->priv->hadjustment);
13911   if (wy)
13912     *wy = by + gtk_tree_view_get_effective_header_height (tree_view);
13913 }
13914
13915 /**
13916  * gtk_tree_view_convert_tree_to_bin_window_coords:
13917  * @tree_view: a #GtkTreeView
13918  * @tx: tree X coordinate
13919  * @ty: tree Y coordinate
13920  * @bx: (out): return location for X coordinate relative to bin_window
13921  * @by: (out): return location for Y coordinate relative to bin_window
13922  *
13923  * Converts tree coordinates (coordinates in full scrollable area of the tree)
13924  * to bin_window coordinates.
13925  *
13926  * Since: 2.12
13927  **/
13928 void
13929 gtk_tree_view_convert_tree_to_bin_window_coords (GtkTreeView *tree_view,
13930                                                  gint         tx,
13931                                                  gint         ty,
13932                                                  gint        *bx,
13933                                                  gint        *by)
13934 {
13935   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
13936
13937   if (bx)
13938     *bx = tx;
13939   if (by)
13940     *by = ty - tree_view->priv->dy;
13941 }
13942
13943 /**
13944  * gtk_tree_view_convert_bin_window_to_tree_coords:
13945  * @tree_view: a #GtkTreeView
13946  * @bx: X coordinate relative to bin_window
13947  * @by: Y coordinate relative to bin_window
13948  * @tx: (out): return location for tree X coordinate
13949  * @ty: (out): return location for tree Y coordinate
13950  *
13951  * Converts bin_window coordinates to coordinates for the
13952  * tree (the full scrollable area of the tree).
13953  *
13954  * Since: 2.12
13955  **/
13956 void
13957 gtk_tree_view_convert_bin_window_to_tree_coords (GtkTreeView *tree_view,
13958                                                  gint         bx,
13959                                                  gint         by,
13960                                                  gint        *tx,
13961                                                  gint        *ty)
13962 {
13963   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
13964
13965   if (tx)
13966     *tx = bx;
13967   if (ty)
13968     *ty = by + tree_view->priv->dy;
13969 }
13970
13971
13972
13973 /**
13974  * gtk_tree_view_get_visible_range:
13975  * @tree_view: A #GtkTreeView
13976  * @start_path: (out) (allow-none): Return location for start of region,
13977  *              or %NULL.
13978  * @end_path: (out) (allow-none): Return location for end of region, or %NULL.
13979  *
13980  * Sets @start_path and @end_path to be the first and last visible path.
13981  * Note that there may be invisible paths in between.
13982  *
13983  * The paths should be freed with gtk_tree_path_free() after use.
13984  *
13985  * Returns: %TRUE, if valid paths were placed in @start_path and @end_path.
13986  *
13987  * Since: 2.8
13988  **/
13989 gboolean
13990 gtk_tree_view_get_visible_range (GtkTreeView  *tree_view,
13991                                  GtkTreePath **start_path,
13992                                  GtkTreePath **end_path)
13993 {
13994   GtkRBTree *tree;
13995   GtkRBNode *node;
13996   gboolean retval;
13997
13998   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), FALSE);
13999
14000   if (!tree_view->priv->tree)
14001     return FALSE;
14002
14003   retval = TRUE;
14004
14005   if (start_path)
14006     {
14007       _gtk_rbtree_find_offset (tree_view->priv->tree,
14008                                TREE_WINDOW_Y_TO_RBTREE_Y (tree_view, 0),
14009                                &tree, &node);
14010       if (node)
14011         *start_path = _gtk_tree_path_new_from_rbtree (tree, node);
14012       else
14013         retval = FALSE;
14014     }
14015
14016   if (end_path)
14017     {
14018       gint y;
14019
14020       if (tree_view->priv->height < gtk_adjustment_get_page_size (tree_view->priv->vadjustment))
14021         y = tree_view->priv->height - 1;
14022       else
14023         y = TREE_WINDOW_Y_TO_RBTREE_Y (tree_view, gtk_adjustment_get_page_size (tree_view->priv->vadjustment)) - 1;
14024
14025       _gtk_rbtree_find_offset (tree_view->priv->tree, y, &tree, &node);
14026       if (node)
14027         *end_path = _gtk_tree_path_new_from_rbtree (tree, node);
14028       else
14029         retval = FALSE;
14030     }
14031
14032   return retval;
14033 }
14034
14035 /**
14036  * gtk_tree_view_is_blank_at_pos:
14037  * @tree_view: A #GtkTreeView
14038  * @x: The x position to be identified (relative to bin_window)
14039  * @y: The y position to be identified (relative to bin_window)
14040  * @path: (out) (allow-none): A pointer to a #GtkTreePath pointer to be filled in, or %NULL
14041  * @column: (out) (allow-none): A pointer to a #GtkTreeViewColumn pointer to be filled in, or %NULL
14042  * @cell_x: (out) (allow-none): A pointer where the X coordinate relative to the cell can be placed, or %NULL
14043  * @cell_y: (out) (allow-none): A pointer where the Y coordinate relative to the cell can be placed, or %NULL
14044  *
14045  * Determine whether the point (@x, @y) in @tree_view is blank, that is no
14046  * cell content nor an expander arrow is drawn at the location. If so, the
14047  * location can be considered as the background. You might wish to take
14048  * special action on clicks on the background, such as clearing a current
14049  * selection, having a custom context menu or starting rubber banding.
14050  *
14051  * The @x and @y coordinate that are provided must be relative to bin_window
14052  * coordinates.  That is, @x and @y must come from an event on @tree_view
14053  * where <literal>event->window == gtk_tree_view_get_bin_window (<!-- -->)</literal>.
14054  *
14055  * For converting widget coordinates (eg. the ones you get from
14056  * GtkWidget::query-tooltip), please see
14057  * gtk_tree_view_convert_widget_to_bin_window_coords().
14058  *
14059  * The @path, @column, @cell_x and @cell_y arguments will be filled in
14060  * likewise as for gtk_tree_view_get_path_at_pos().  Please see
14061  * gtk_tree_view_get_path_at_pos() for more information.
14062  *
14063  * Return value: %TRUE if the area at the given coordinates is blank,
14064  * %FALSE otherwise.
14065  *
14066  * Since: 3.0
14067  */
14068 gboolean
14069 gtk_tree_view_is_blank_at_pos (GtkTreeView       *tree_view,
14070                                gint                x,
14071                                gint                y,
14072                                GtkTreePath       **path,
14073                                GtkTreeViewColumn **column,
14074                                gint               *cell_x,
14075                                gint               *cell_y)
14076 {
14077   GtkRBTree *tree;
14078   GtkRBNode *node;
14079   GtkTreeIter iter;
14080   GtkTreePath *real_path;
14081   GtkTreeViewColumn *real_column;
14082   GdkRectangle cell_area, background_area;
14083
14084   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), FALSE);
14085
14086   if (!gtk_tree_view_get_path_at_pos (tree_view, x, y,
14087                                       &real_path, &real_column,
14088                                       cell_x, cell_y))
14089     /* If there's no path here, it is blank */
14090     return TRUE;
14091
14092   if (path)
14093     *path = real_path;
14094
14095   if (column)
14096     *column = real_column;
14097
14098   gtk_tree_model_get_iter (tree_view->priv->model, &iter, real_path);
14099   _gtk_tree_view_find_node (tree_view, real_path, &tree, &node);
14100
14101   /* Check if there's an expander arrow at (x, y) */
14102   if (real_column == tree_view->priv->expander_column
14103       && gtk_tree_view_draw_expanders (tree_view))
14104     {
14105       gboolean over_arrow;
14106
14107       over_arrow = coords_are_over_arrow (tree_view, tree, node, x, y);
14108
14109       if (over_arrow)
14110         {
14111           if (!path)
14112             gtk_tree_path_free (real_path);
14113           return FALSE;
14114         }
14115     }
14116
14117   /* Otherwise, have the column see if there's a cell at (x, y) */
14118   gtk_tree_view_column_cell_set_cell_data (real_column,
14119                                            tree_view->priv->model,
14120                                            &iter,
14121                                            GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_PARENT),
14122                                            node->children ? TRUE : FALSE);
14123
14124   gtk_tree_view_get_background_area (tree_view, real_path, real_column,
14125                                      &background_area);
14126   gtk_tree_view_get_cell_area (tree_view, real_path, real_column,
14127                                &cell_area);
14128
14129   if (!path)
14130     gtk_tree_path_free (real_path);
14131
14132   return _gtk_tree_view_column_is_blank_at_pos (real_column,
14133                                                 &cell_area,
14134                                                 &background_area,
14135                                                 x, y);
14136 }
14137
14138 static void
14139 unset_reorderable (GtkTreeView *tree_view)
14140 {
14141   if (tree_view->priv->reorderable)
14142     {
14143       tree_view->priv->reorderable = FALSE;
14144       g_object_notify (G_OBJECT (tree_view), "reorderable");
14145     }
14146 }
14147
14148 /**
14149  * gtk_tree_view_enable_model_drag_source:
14150  * @tree_view: a #GtkTreeView
14151  * @start_button_mask: Mask of allowed buttons to start drag
14152  * @targets: (array length=n_targets): the table of targets that the drag will support
14153  * @n_targets: the number of items in @targets
14154  * @actions: the bitmask of possible actions for a drag from this
14155  *    widget
14156  *
14157  * Turns @tree_view into a drag source for automatic DND. Calling this
14158  * method sets #GtkTreeView:reorderable to %FALSE.
14159  **/
14160 void
14161 gtk_tree_view_enable_model_drag_source (GtkTreeView              *tree_view,
14162                                         GdkModifierType           start_button_mask,
14163                                         const GtkTargetEntry     *targets,
14164                                         gint                      n_targets,
14165                                         GdkDragAction             actions)
14166 {
14167   TreeViewDragInfo *di;
14168
14169   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
14170
14171   gtk_drag_source_set (GTK_WIDGET (tree_view),
14172                        0,
14173                        targets,
14174                        n_targets,
14175                        actions);
14176
14177   di = ensure_info (tree_view);
14178
14179   di->start_button_mask = start_button_mask;
14180   di->source_actions = actions;
14181   di->source_set = TRUE;
14182
14183   unset_reorderable (tree_view);
14184 }
14185
14186 /**
14187  * gtk_tree_view_enable_model_drag_dest:
14188  * @tree_view: a #GtkTreeView
14189  * @targets: (array length=n_targets): the table of targets that
14190  *           the drag will support
14191  * @n_targets: the number of items in @targets
14192  * @actions: the bitmask of possible actions for a drag from this
14193  *    widget
14194  *
14195  * Turns @tree_view into a drop destination for automatic DND. Calling
14196  * this method sets #GtkTreeView:reorderable to %FALSE.
14197  **/
14198 void
14199 gtk_tree_view_enable_model_drag_dest (GtkTreeView              *tree_view,
14200                                       const GtkTargetEntry     *targets,
14201                                       gint                      n_targets,
14202                                       GdkDragAction             actions)
14203 {
14204   TreeViewDragInfo *di;
14205
14206   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
14207
14208   gtk_drag_dest_set (GTK_WIDGET (tree_view),
14209                      0,
14210                      targets,
14211                      n_targets,
14212                      actions);
14213
14214   di = ensure_info (tree_view);
14215   di->dest_set = TRUE;
14216
14217   unset_reorderable (tree_view);
14218 }
14219
14220 /**
14221  * gtk_tree_view_unset_rows_drag_source:
14222  * @tree_view: a #GtkTreeView
14223  *
14224  * Undoes the effect of
14225  * gtk_tree_view_enable_model_drag_source(). Calling this method sets
14226  * #GtkTreeView:reorderable to %FALSE.
14227  **/
14228 void
14229 gtk_tree_view_unset_rows_drag_source (GtkTreeView *tree_view)
14230 {
14231   TreeViewDragInfo *di;
14232
14233   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
14234
14235   di = get_info (tree_view);
14236
14237   if (di)
14238     {
14239       if (di->source_set)
14240         {
14241           gtk_drag_source_unset (GTK_WIDGET (tree_view));
14242           di->source_set = FALSE;
14243         }
14244
14245       if (!di->dest_set && !di->source_set)
14246         remove_info (tree_view);
14247     }
14248
14249   unset_reorderable (tree_view);
14250 }
14251
14252 /**
14253  * gtk_tree_view_unset_rows_drag_dest:
14254  * @tree_view: a #GtkTreeView
14255  *
14256  * Undoes the effect of
14257  * gtk_tree_view_enable_model_drag_dest(). Calling this method sets
14258  * #GtkTreeView:reorderable to %FALSE.
14259  **/
14260 void
14261 gtk_tree_view_unset_rows_drag_dest (GtkTreeView *tree_view)
14262 {
14263   TreeViewDragInfo *di;
14264
14265   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
14266
14267   di = get_info (tree_view);
14268
14269   if (di)
14270     {
14271       if (di->dest_set)
14272         {
14273           gtk_drag_dest_unset (GTK_WIDGET (tree_view));
14274           di->dest_set = FALSE;
14275         }
14276
14277       if (!di->dest_set && !di->source_set)
14278         remove_info (tree_view);
14279     }
14280
14281   unset_reorderable (tree_view);
14282 }
14283
14284 /**
14285  * gtk_tree_view_set_drag_dest_row:
14286  * @tree_view: a #GtkTreeView
14287  * @path: (allow-none): The path of the row to highlight, or %NULL
14288  * @pos: Specifies whether to drop before, after or into the row
14289  *
14290  * Sets the row that is highlighted for feedback.
14291  * If @path is %NULL, an existing highlight is removed.
14292  */
14293 void
14294 gtk_tree_view_set_drag_dest_row (GtkTreeView            *tree_view,
14295                                  GtkTreePath            *path,
14296                                  GtkTreeViewDropPosition pos)
14297 {
14298   GtkTreePath *current_dest;
14299
14300   /* Note; this function is exported to allow a custom DND
14301    * implementation, so it can't touch TreeViewDragInfo
14302    */
14303
14304   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
14305
14306   current_dest = NULL;
14307
14308   if (tree_view->priv->drag_dest_row)
14309     {
14310       current_dest = gtk_tree_row_reference_get_path (tree_view->priv->drag_dest_row);
14311       gtk_tree_row_reference_free (tree_view->priv->drag_dest_row);
14312     }
14313
14314   /* special case a drop on an empty model */
14315   tree_view->priv->empty_view_drop = 0;
14316
14317   if (pos == GTK_TREE_VIEW_DROP_BEFORE && path
14318       && gtk_tree_path_get_depth (path) == 1
14319       && gtk_tree_path_get_indices (path)[0] == 0)
14320     {
14321       gint n_children;
14322
14323       n_children = gtk_tree_model_iter_n_children (tree_view->priv->model,
14324                                                    NULL);
14325
14326       if (!n_children)
14327         tree_view->priv->empty_view_drop = 1;
14328     }
14329
14330   tree_view->priv->drag_dest_pos = pos;
14331
14332   if (path)
14333     {
14334       tree_view->priv->drag_dest_row =
14335         gtk_tree_row_reference_new_proxy (G_OBJECT (tree_view), tree_view->priv->model, path);
14336       gtk_tree_view_queue_draw_path (tree_view, path, NULL);
14337     }
14338   else
14339     tree_view->priv->drag_dest_row = NULL;
14340
14341   if (current_dest)
14342     {
14343       GtkRBTree *tree, *new_tree;
14344       GtkRBNode *node, *new_node;
14345
14346       _gtk_tree_view_find_node (tree_view, current_dest, &tree, &node);
14347       _gtk_tree_view_queue_draw_node (tree_view, tree, node, NULL);
14348
14349       if (tree && node)
14350         {
14351           _gtk_rbtree_next_full (tree, node, &new_tree, &new_node);
14352           if (new_tree && new_node)
14353             _gtk_tree_view_queue_draw_node (tree_view, new_tree, new_node, NULL);
14354
14355           _gtk_rbtree_prev_full (tree, node, &new_tree, &new_node);
14356           if (new_tree && new_node)
14357             _gtk_tree_view_queue_draw_node (tree_view, new_tree, new_node, NULL);
14358         }
14359       gtk_tree_path_free (current_dest);
14360     }
14361 }
14362
14363 /**
14364  * gtk_tree_view_get_drag_dest_row:
14365  * @tree_view: a #GtkTreeView
14366  * @path: (out) (allow-none): Return location for the path of the highlighted row, or %NULL.
14367  * @pos: (out) (allow-none): Return location for the drop position, or %NULL
14368  *
14369  * Gets information about the row that is highlighted for feedback.
14370  **/
14371 void
14372 gtk_tree_view_get_drag_dest_row (GtkTreeView              *tree_view,
14373                                  GtkTreePath             **path,
14374                                  GtkTreeViewDropPosition  *pos)
14375 {
14376   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
14377
14378   if (path)
14379     {
14380       if (tree_view->priv->drag_dest_row)
14381         *path = gtk_tree_row_reference_get_path (tree_view->priv->drag_dest_row);
14382       else
14383         {
14384           if (tree_view->priv->empty_view_drop)
14385             *path = gtk_tree_path_new_from_indices (0, -1);
14386           else
14387             *path = NULL;
14388         }
14389     }
14390
14391   if (pos)
14392     *pos = tree_view->priv->drag_dest_pos;
14393 }
14394
14395 /**
14396  * gtk_tree_view_get_dest_row_at_pos:
14397  * @tree_view: a #GtkTreeView
14398  * @drag_x: the position to determine the destination row for
14399  * @drag_y: the position to determine the destination row for
14400  * @path: (out) (allow-none): Return location for the path of the highlighted row, or %NULL.
14401  * @pos: (out) (allow-none): Return location for the drop position, or %NULL
14402  *
14403  * Determines the destination row for a given position.  @drag_x and
14404  * @drag_y are expected to be in widget coordinates.  This function is only
14405  * meaningful if @tree_view is realized.  Therefore this function will always
14406  * return %FALSE if @tree_view is not realized or does not have a model.
14407  *
14408  * Return value: whether there is a row at the given position, %TRUE if this
14409  * is indeed the case.
14410  **/
14411 gboolean
14412 gtk_tree_view_get_dest_row_at_pos (GtkTreeView             *tree_view,
14413                                    gint                     drag_x,
14414                                    gint                     drag_y,
14415                                    GtkTreePath            **path,
14416                                    GtkTreeViewDropPosition *pos)
14417 {
14418   gint cell_y;
14419   gint bin_x, bin_y;
14420   gdouble offset_into_row;
14421   gdouble third;
14422   GdkRectangle cell;
14423   GtkTreeViewColumn *column = NULL;
14424   GtkTreePath *tmp_path = NULL;
14425
14426   /* Note; this function is exported to allow a custom DND
14427    * implementation, so it can't touch TreeViewDragInfo
14428    */
14429
14430   g_return_val_if_fail (tree_view != NULL, FALSE);
14431   g_return_val_if_fail (drag_x >= 0, FALSE);
14432   g_return_val_if_fail (drag_y >= 0, FALSE);
14433
14434   if (path)
14435     *path = NULL;
14436
14437   if (tree_view->priv->bin_window == NULL)
14438     return FALSE;
14439
14440   if (tree_view->priv->tree == NULL)
14441     return FALSE;
14442
14443   /* If in the top third of a row, we drop before that row; if
14444    * in the bottom third, drop after that row; if in the middle,
14445    * and the row has children, drop into the row.
14446    */
14447   gtk_tree_view_convert_widget_to_bin_window_coords (tree_view, drag_x, drag_y,
14448                                                      &bin_x, &bin_y);
14449
14450   if (!gtk_tree_view_get_path_at_pos (tree_view,
14451                                       bin_x,
14452                                       bin_y,
14453                                       &tmp_path,
14454                                       &column,
14455                                       NULL,
14456                                       &cell_y))
14457     return FALSE;
14458
14459   gtk_tree_view_get_background_area (tree_view, tmp_path, column,
14460                                      &cell);
14461
14462   offset_into_row = cell_y;
14463
14464   if (path)
14465     *path = tmp_path;
14466   else
14467     gtk_tree_path_free (tmp_path);
14468
14469   tmp_path = NULL;
14470
14471   third = cell.height / 3.0;
14472
14473   if (pos)
14474     {
14475       if (offset_into_row < third)
14476         {
14477           *pos = GTK_TREE_VIEW_DROP_BEFORE;
14478         }
14479       else if (offset_into_row < (cell.height / 2.0))
14480         {
14481           *pos = GTK_TREE_VIEW_DROP_INTO_OR_BEFORE;
14482         }
14483       else if (offset_into_row < third * 2.0)
14484         {
14485           *pos = GTK_TREE_VIEW_DROP_INTO_OR_AFTER;
14486         }
14487       else
14488         {
14489           *pos = GTK_TREE_VIEW_DROP_AFTER;
14490         }
14491     }
14492
14493   return TRUE;
14494 }
14495
14496
14497
14498 /* KEEP IN SYNC WITH GTK_TREE_VIEW_BIN_EXPOSE */
14499 /**
14500  * gtk_tree_view_create_row_drag_icon:
14501  * @tree_view: a #GtkTreeView
14502  * @path: a #GtkTreePath in @tree_view
14503  *
14504  * Creates a #cairo_surface_t representation of the row at @path.
14505  * This image is used for a drag icon.
14506  *
14507  * Return value: (transfer full): a newly-allocated surface of the drag icon.
14508  **/
14509 cairo_surface_t *
14510 gtk_tree_view_create_row_drag_icon (GtkTreeView  *tree_view,
14511                                     GtkTreePath  *path)
14512 {
14513   GtkTreeIter   iter;
14514   GtkRBTree    *tree;
14515   GtkRBNode    *node;
14516   GtkStyleContext *context;
14517   gint cell_offset;
14518   GList *list;
14519   GdkRectangle background_area;
14520   GtkWidget *widget;
14521   gint depth;
14522   /* start drawing inside the black outline */
14523   gint x = 1, y = 1;
14524   cairo_surface_t *surface;
14525   gint bin_window_width;
14526   gboolean is_separator = FALSE;
14527   gboolean rtl, allow_rules;
14528   cairo_t *cr;
14529
14530   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), NULL);
14531   g_return_val_if_fail (path != NULL, NULL);
14532
14533   widget = GTK_WIDGET (tree_view);
14534
14535   if (!gtk_widget_get_realized (widget))
14536     return NULL;
14537
14538   depth = gtk_tree_path_get_depth (path);
14539
14540   _gtk_tree_view_find_node (tree_view,
14541                             path,
14542                             &tree,
14543                             &node);
14544
14545   if (tree == NULL)
14546     return NULL;
14547
14548   if (!gtk_tree_model_get_iter (tree_view->priv->model,
14549                                 &iter,
14550                                 path))
14551     return NULL;
14552
14553   context = gtk_widget_get_style_context (widget);
14554
14555   gtk_style_context_save (context);
14556   gtk_style_context_add_region (context, GTK_STYLE_REGION_COLUMN, 0);
14557
14558   gtk_widget_style_get (widget,
14559                         "allow-rules", &allow_rules,
14560                         NULL);
14561
14562   if (allow_rules && tree_view->priv->has_rules)
14563     {
14564       GtkRegionFlags row_flags;
14565
14566       if ((_gtk_rbtree_node_get_index (tree, node) % 2))
14567         row_flags = GTK_REGION_ODD;
14568       else
14569         row_flags = GTK_REGION_EVEN;
14570
14571       gtk_style_context_add_region (context, GTK_STYLE_REGION_ROW, row_flags);
14572     }
14573
14574   is_separator = row_is_separator (tree_view, &iter, NULL);
14575
14576   cell_offset = x;
14577
14578   background_area.y = y;
14579   background_area.height = gtk_tree_view_get_row_height (tree_view, node);
14580
14581   bin_window_width = gdk_window_get_width (tree_view->priv->bin_window);
14582
14583   surface = gdk_window_create_similar_surface (tree_view->priv->bin_window,
14584                                                CAIRO_CONTENT_COLOR,
14585                                                bin_window_width + 2,
14586                                                background_area.height + 2);
14587
14588   cr = cairo_create (surface);
14589
14590   gtk_render_background (context, cr, 0, 0,
14591                          bin_window_width + 2,
14592                          background_area.height + 2);
14593
14594   rtl = gtk_widget_get_direction (GTK_WIDGET (tree_view)) == GTK_TEXT_DIR_RTL;
14595
14596   for (list = (rtl ? g_list_last (tree_view->priv->columns) : g_list_first (tree_view->priv->columns));
14597       list;
14598       list = (rtl ? list->prev : list->next))
14599     {
14600       GtkTreeViewColumn *column = list->data;
14601       GdkRectangle cell_area;
14602       gint vertical_separator;
14603
14604       if (!gtk_tree_view_column_get_visible (column))
14605         continue;
14606
14607       gtk_tree_view_column_cell_set_cell_data (column, tree_view->priv->model, &iter,
14608                                                GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_PARENT),
14609                                                node->children?TRUE:FALSE);
14610
14611       background_area.x = cell_offset;
14612       background_area.width = gtk_tree_view_column_get_width (column);
14613
14614       gtk_widget_style_get (widget,
14615                             "vertical-separator", &vertical_separator,
14616                             NULL);
14617
14618       cell_area = background_area;
14619
14620       cell_area.y += vertical_separator / 2;
14621       cell_area.height -= vertical_separator;
14622
14623       if (gtk_tree_view_is_expander_column (tree_view, column))
14624         {
14625           if (!rtl)
14626             cell_area.x += (depth - 1) * tree_view->priv->level_indentation;
14627           cell_area.width -= (depth - 1) * tree_view->priv->level_indentation;
14628
14629           if (gtk_tree_view_draw_expanders (tree_view))
14630             {
14631               int expander_size = gtk_tree_view_get_expander_size (tree_view);
14632               if (!rtl)
14633                 cell_area.x += depth * expander_size;
14634               cell_area.width -= depth * expander_size;
14635             }
14636         }
14637
14638       if (gtk_tree_view_column_cell_is_visible (column))
14639         {
14640           if (is_separator)
14641             {
14642               gtk_style_context_save (context);
14643               gtk_style_context_add_class (context, GTK_STYLE_CLASS_SEPARATOR);
14644
14645               gtk_render_line (context, cr,
14646                                cell_area.x,
14647                                cell_area.y + cell_area.height / 2,
14648                                cell_area.x + cell_area.width,
14649                                cell_area.y + cell_area.height / 2);
14650
14651               gtk_style_context_restore (context);
14652             }
14653           else
14654             {
14655               _gtk_tree_view_column_cell_render (column,
14656                                                  cr,
14657                                                  &background_area,
14658                                                  &cell_area,
14659                                                  0, FALSE);
14660             }
14661         }
14662       cell_offset += gtk_tree_view_column_get_width (column);
14663     }
14664
14665   cairo_set_source_rgb (cr, 0, 0, 0);
14666   cairo_rectangle (cr,
14667                    0.5, 0.5,
14668                    bin_window_width + 1,
14669                    background_area.height + 1);
14670   cairo_set_line_width (cr, 1.0);
14671   cairo_stroke (cr);
14672
14673   cairo_destroy (cr);
14674
14675   cairo_surface_set_device_offset (surface, 2, 2);
14676
14677   gtk_style_context_restore (context);
14678
14679   return surface;
14680 }
14681
14682
14683 /**
14684  * gtk_tree_view_set_destroy_count_func:
14685  * @tree_view: A #GtkTreeView
14686  * @func: (allow-none): Function to be called when a view row is destroyed, or %NULL
14687  * @data: (allow-none): User data to be passed to @func, or %NULL
14688  * @destroy: (allow-none): Destroy notifier for @data, or %NULL
14689  *
14690  * This function should almost never be used.  It is meant for private use by
14691  * ATK for determining the number of visible children that are removed when the
14692  * user collapses a row, or a row is deleted.
14693  *
14694  * Deprecated: 3.4: Accessibility does not need the function anymore.
14695  **/
14696 void
14697 gtk_tree_view_set_destroy_count_func (GtkTreeView             *tree_view,
14698                                       GtkTreeDestroyCountFunc  func,
14699                                       gpointer                 data,
14700                                       GDestroyNotify           destroy)
14701 {
14702   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
14703
14704   if (tree_view->priv->destroy_count_destroy)
14705     tree_view->priv->destroy_count_destroy (tree_view->priv->destroy_count_data);
14706
14707   tree_view->priv->destroy_count_func = func;
14708   tree_view->priv->destroy_count_data = data;
14709   tree_view->priv->destroy_count_destroy = destroy;
14710 }
14711
14712
14713 /*
14714  * Interactive search
14715  */
14716
14717 /**
14718  * gtk_tree_view_set_enable_search:
14719  * @tree_view: A #GtkTreeView
14720  * @enable_search: %TRUE, if the user can search interactively
14721  *
14722  * If @enable_search is set, then the user can type in text to search through
14723  * the tree interactively (this is sometimes called "typeahead find").
14724  *
14725  * Note that even if this is %FALSE, the user can still initiate a search
14726  * using the "start-interactive-search" key binding.
14727  */
14728 void
14729 gtk_tree_view_set_enable_search (GtkTreeView *tree_view,
14730                                  gboolean     enable_search)
14731 {
14732   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
14733
14734   enable_search = !!enable_search;
14735
14736   if (tree_view->priv->enable_search != enable_search)
14737     {
14738        tree_view->priv->enable_search = enable_search;
14739        g_object_notify (G_OBJECT (tree_view), "enable-search");
14740     }
14741 }
14742
14743 /**
14744  * gtk_tree_view_get_enable_search:
14745  * @tree_view: A #GtkTreeView
14746  *
14747  * Returns whether or not the tree allows to start interactive searching
14748  * by typing in text.
14749  *
14750  * Return value: whether or not to let the user search interactively
14751  */
14752 gboolean
14753 gtk_tree_view_get_enable_search (GtkTreeView *tree_view)
14754 {
14755   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), FALSE);
14756
14757   return tree_view->priv->enable_search;
14758 }
14759
14760
14761 /**
14762  * gtk_tree_view_get_search_column:
14763  * @tree_view: A #GtkTreeView
14764  *
14765  * Gets the column searched on by the interactive search code.
14766  *
14767  * Return value: the column the interactive search code searches in.
14768  */
14769 gint
14770 gtk_tree_view_get_search_column (GtkTreeView *tree_view)
14771 {
14772   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), -1);
14773
14774   return (tree_view->priv->search_column);
14775 }
14776
14777 /**
14778  * gtk_tree_view_set_search_column:
14779  * @tree_view: A #GtkTreeView
14780  * @column: the column of the model to search in, or -1 to disable searching
14781  *
14782  * Sets @column as the column where the interactive search code should
14783  * search in for the current model.
14784  *
14785  * If the search column is set, users can use the "start-interactive-search"
14786  * key binding to bring up search popup. The enable-search property controls
14787  * whether simply typing text will also start an interactive search.
14788  *
14789  * Note that @column refers to a column of the current model. The search
14790  * column is reset to -1 when the model is changed.
14791  */
14792 void
14793 gtk_tree_view_set_search_column (GtkTreeView *tree_view,
14794                                  gint         column)
14795 {
14796   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
14797   g_return_if_fail (column >= -1);
14798
14799   if (tree_view->priv->search_column == column)
14800     return;
14801
14802   tree_view->priv->search_column = column;
14803   g_object_notify (G_OBJECT (tree_view), "search-column");
14804 }
14805
14806 /**
14807  * gtk_tree_view_get_search_equal_func: (skip)
14808  * @tree_view: A #GtkTreeView
14809  *
14810  * Returns the compare function currently in use.
14811  *
14812  * Return value: the currently used compare function for the search code.
14813  */
14814
14815 GtkTreeViewSearchEqualFunc
14816 gtk_tree_view_get_search_equal_func (GtkTreeView *tree_view)
14817 {
14818   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), NULL);
14819
14820   return tree_view->priv->search_equal_func;
14821 }
14822
14823 /**
14824  * gtk_tree_view_set_search_equal_func:
14825  * @tree_view: A #GtkTreeView
14826  * @search_equal_func: the compare function to use during the search
14827  * @search_user_data: (allow-none): user data to pass to @search_equal_func, or %NULL
14828  * @search_destroy: (allow-none): Destroy notifier for @search_user_data, or %NULL
14829  *
14830  * Sets the compare function for the interactive search capabilities; note
14831  * that somewhat like strcmp() returning 0 for equality
14832  * #GtkTreeViewSearchEqualFunc returns %FALSE on matches.
14833  **/
14834 void
14835 gtk_tree_view_set_search_equal_func (GtkTreeView                *tree_view,
14836                                      GtkTreeViewSearchEqualFunc  search_equal_func,
14837                                      gpointer                    search_user_data,
14838                                      GDestroyNotify              search_destroy)
14839 {
14840   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
14841   g_return_if_fail (search_equal_func != NULL);
14842
14843   if (tree_view->priv->search_destroy)
14844     tree_view->priv->search_destroy (tree_view->priv->search_user_data);
14845
14846   tree_view->priv->search_equal_func = search_equal_func;
14847   tree_view->priv->search_user_data = search_user_data;
14848   tree_view->priv->search_destroy = search_destroy;
14849   if (tree_view->priv->search_equal_func == NULL)
14850     tree_view->priv->search_equal_func = gtk_tree_view_search_equal_func;
14851 }
14852
14853 /**
14854  * gtk_tree_view_get_search_entry:
14855  * @tree_view: A #GtkTreeView
14856  *
14857  * Returns the #GtkEntry which is currently in use as interactive search
14858  * entry for @tree_view.  In case the built-in entry is being used, %NULL
14859  * will be returned.
14860  *
14861  * Return value: (transfer none): the entry currently in use as search entry.
14862  *
14863  * Since: 2.10
14864  */
14865 GtkEntry *
14866 gtk_tree_view_get_search_entry (GtkTreeView *tree_view)
14867 {
14868   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), NULL);
14869
14870   if (tree_view->priv->search_custom_entry_set)
14871     return GTK_ENTRY (tree_view->priv->search_entry);
14872
14873   return NULL;
14874 }
14875
14876 /**
14877  * gtk_tree_view_set_search_entry:
14878  * @tree_view: A #GtkTreeView
14879  * @entry: (allow-none): the entry the interactive search code of @tree_view should use or %NULL
14880  *
14881  * Sets the entry which the interactive search code will use for this
14882  * @tree_view.  This is useful when you want to provide a search entry
14883  * in our interface at all time at a fixed position.  Passing %NULL for
14884  * @entry will make the interactive search code use the built-in popup
14885  * entry again.
14886  *
14887  * Since: 2.10
14888  */
14889 void
14890 gtk_tree_view_set_search_entry (GtkTreeView *tree_view,
14891                                 GtkEntry    *entry)
14892 {
14893   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
14894   g_return_if_fail (entry == NULL || GTK_IS_ENTRY (entry));
14895
14896   if (tree_view->priv->search_custom_entry_set)
14897     {
14898       if (tree_view->priv->search_entry_changed_id)
14899         {
14900           g_signal_handler_disconnect (tree_view->priv->search_entry,
14901                                        tree_view->priv->search_entry_changed_id);
14902           tree_view->priv->search_entry_changed_id = 0;
14903         }
14904       g_signal_handlers_disconnect_by_func (tree_view->priv->search_entry,
14905                                             G_CALLBACK (gtk_tree_view_search_key_press_event),
14906                                             tree_view);
14907
14908       g_object_unref (tree_view->priv->search_entry);
14909     }
14910   else if (tree_view->priv->search_window)
14911     {
14912       gtk_widget_destroy (tree_view->priv->search_window);
14913
14914       tree_view->priv->search_window = NULL;
14915     }
14916
14917   if (entry)
14918     {
14919       tree_view->priv->search_entry = g_object_ref (entry);
14920       tree_view->priv->search_custom_entry_set = TRUE;
14921
14922       if (tree_view->priv->search_entry_changed_id == 0)
14923         {
14924           tree_view->priv->search_entry_changed_id =
14925             g_signal_connect (tree_view->priv->search_entry, "changed",
14926                               G_CALLBACK (gtk_tree_view_search_init),
14927                               tree_view);
14928         }
14929
14930         g_signal_connect (tree_view->priv->search_entry, "key-press-event",
14931                           G_CALLBACK (gtk_tree_view_search_key_press_event),
14932                           tree_view);
14933
14934         gtk_tree_view_search_init (tree_view->priv->search_entry, tree_view);
14935     }
14936   else
14937     {
14938       tree_view->priv->search_entry = NULL;
14939       tree_view->priv->search_custom_entry_set = FALSE;
14940     }
14941 }
14942
14943 /**
14944  * gtk_tree_view_set_search_position_func:
14945  * @tree_view: A #GtkTreeView
14946  * @func: (allow-none): the function to use to position the search dialog, or %NULL
14947  *    to use the default search position function
14948  * @data: (allow-none): user data to pass to @func, or %NULL
14949  * @destroy: (allow-none): Destroy notifier for @data, or %NULL
14950  *
14951  * Sets the function to use when positioning the search dialog.
14952  *
14953  * Since: 2.10
14954  **/
14955 void
14956 gtk_tree_view_set_search_position_func (GtkTreeView                   *tree_view,
14957                                         GtkTreeViewSearchPositionFunc  func,
14958                                         gpointer                       user_data,
14959                                         GDestroyNotify                 destroy)
14960 {
14961   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
14962
14963   if (tree_view->priv->search_position_destroy)
14964     tree_view->priv->search_position_destroy (tree_view->priv->search_position_user_data);
14965
14966   tree_view->priv->search_position_func = func;
14967   tree_view->priv->search_position_user_data = user_data;
14968   tree_view->priv->search_position_destroy = destroy;
14969   if (tree_view->priv->search_position_func == NULL)
14970     tree_view->priv->search_position_func = gtk_tree_view_search_position_func;
14971 }
14972
14973 /**
14974  * gtk_tree_view_get_search_position_func: (skip)
14975  * @tree_view: A #GtkTreeView
14976  *
14977  * Returns the positioning function currently in use.
14978  *
14979  * Return value: the currently used function for positioning the search dialog.
14980  *
14981  * Since: 2.10
14982  */
14983 GtkTreeViewSearchPositionFunc
14984 gtk_tree_view_get_search_position_func (GtkTreeView *tree_view)
14985 {
14986   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), NULL);
14987
14988   return tree_view->priv->search_position_func;
14989 }
14990
14991
14992 static void
14993 gtk_tree_view_search_dialog_hide (GtkWidget   *search_dialog,
14994                                   GtkTreeView *tree_view,
14995                                   GdkDevice   *device)
14996 {
14997   if (tree_view->priv->disable_popdown)
14998     return;
14999
15000   if (tree_view->priv->search_entry_changed_id)
15001     {
15002       g_signal_handler_disconnect (tree_view->priv->search_entry,
15003                                    tree_view->priv->search_entry_changed_id);
15004       tree_view->priv->search_entry_changed_id = 0;
15005     }
15006   if (tree_view->priv->typeselect_flush_timeout)
15007     {
15008       g_source_remove (tree_view->priv->typeselect_flush_timeout);
15009       tree_view->priv->typeselect_flush_timeout = 0;
15010     }
15011
15012   if (gtk_widget_get_visible (search_dialog))
15013     {
15014       /* send focus-in event */
15015       send_focus_change (GTK_WIDGET (tree_view->priv->search_entry), device, FALSE);
15016       gtk_widget_hide (search_dialog);
15017       gtk_entry_set_text (GTK_ENTRY (tree_view->priv->search_entry), "");
15018       send_focus_change (GTK_WIDGET (tree_view), device, TRUE);
15019     }
15020 }
15021
15022 static void
15023 gtk_tree_view_search_position_func (GtkTreeView *tree_view,
15024                                     GtkWidget   *search_dialog,
15025                                     gpointer     user_data)
15026 {
15027   gint x, y;
15028   gint tree_x, tree_y;
15029   gint tree_width, tree_height;
15030   GdkWindow *tree_window = gtk_widget_get_window (GTK_WIDGET (tree_view));
15031   GdkScreen *screen = gdk_window_get_screen (tree_window);
15032   GtkRequisition requisition;
15033   gint monitor_num;
15034   GdkRectangle monitor;
15035
15036   monitor_num = gdk_screen_get_monitor_at_window (screen, tree_window);
15037   gdk_screen_get_monitor_workarea (screen, monitor_num, &monitor);
15038
15039   gtk_widget_realize (search_dialog);
15040
15041   gdk_window_get_origin (tree_window, &tree_x, &tree_y);
15042   tree_width = gdk_window_get_width (tree_window);
15043   tree_height = gdk_window_get_height (tree_window);
15044   gtk_widget_get_preferred_size (search_dialog, &requisition, NULL);
15045
15046   if (tree_x + tree_width > gdk_screen_get_width (screen))
15047     x = gdk_screen_get_width (screen) - requisition.width;
15048   else if (tree_x + tree_width - requisition.width < 0)
15049     x = 0;
15050   else
15051     x = tree_x + tree_width - requisition.width;
15052
15053   if (tree_y + tree_height + requisition.height > gdk_screen_get_height (screen))
15054     y = gdk_screen_get_height (screen) - requisition.height;
15055   else if (tree_y + tree_height < 0) /* isn't really possible ... */
15056     y = 0;
15057   else
15058     y = tree_y + tree_height;
15059
15060   gtk_window_move (GTK_WINDOW (search_dialog), x, y);
15061 }
15062
15063 static void
15064 gtk_tree_view_search_disable_popdown (GtkEntry *entry,
15065                                       GtkMenu  *menu,
15066                                       gpointer  data)
15067 {
15068   GtkTreeView *tree_view = (GtkTreeView *)data;
15069
15070   tree_view->priv->disable_popdown = 1;
15071   g_signal_connect (menu, "hide",
15072                     G_CALLBACK (gtk_tree_view_search_enable_popdown), data);
15073 }
15074
15075 /* Because we're visible but offscreen, we just set a flag in the preedit
15076  * callback.
15077  */
15078 static void
15079 gtk_tree_view_search_preedit_changed (GtkIMContext *im_context,
15080                                       GtkTreeView  *tree_view)
15081 {
15082   tree_view->priv->imcontext_changed = 1;
15083   if (tree_view->priv->typeselect_flush_timeout)
15084     {
15085       g_source_remove (tree_view->priv->typeselect_flush_timeout);
15086       tree_view->priv->typeselect_flush_timeout =
15087         gdk_threads_add_timeout (GTK_TREE_VIEW_SEARCH_DIALOG_TIMEOUT,
15088                        (GSourceFunc) gtk_tree_view_search_entry_flush_timeout,
15089                        tree_view);
15090     }
15091
15092 }
15093
15094 static void
15095 gtk_tree_view_search_activate (GtkEntry    *entry,
15096                                GtkTreeView *tree_view)
15097 {
15098   GtkTreePath *path;
15099
15100   gtk_tree_view_search_dialog_hide (tree_view->priv->search_window,
15101                                     tree_view,
15102                                     gtk_get_current_event_device ());
15103
15104   /* If we have a row selected and it's the cursor row, we activate
15105    * the row XXX */
15106   if (tree_view->priv->cursor_node &&
15107       GTK_RBNODE_FLAG_SET (tree_view->priv->cursor_node, GTK_RBNODE_IS_SELECTED))
15108     {
15109       path = _gtk_tree_path_new_from_rbtree (tree_view->priv->cursor_tree,
15110                                              tree_view->priv->cursor_node);
15111
15112       gtk_tree_view_row_activated (tree_view, path, tree_view->priv->focus_column);
15113
15114       gtk_tree_path_free (path);
15115     }
15116 }
15117
15118 static gboolean
15119 gtk_tree_view_real_search_enable_popdown (gpointer data)
15120 {
15121   GtkTreeView *tree_view = (GtkTreeView *)data;
15122
15123   tree_view->priv->disable_popdown = 0;
15124
15125   return FALSE;
15126 }
15127
15128 static void
15129 gtk_tree_view_search_enable_popdown (GtkWidget *widget,
15130                                      gpointer   data)
15131 {
15132   gdk_threads_add_timeout_full (G_PRIORITY_HIGH, 200, gtk_tree_view_real_search_enable_popdown, g_object_ref (data), g_object_unref);
15133 }
15134
15135 static gboolean
15136 gtk_tree_view_search_delete_event (GtkWidget *widget,
15137                                    GdkEventAny *event,
15138                                    GtkTreeView *tree_view)
15139 {
15140   g_return_val_if_fail (GTK_IS_WIDGET (widget), FALSE);
15141
15142   gtk_tree_view_search_dialog_hide (widget, tree_view, NULL);
15143
15144   return TRUE;
15145 }
15146
15147 static gboolean
15148 gtk_tree_view_search_button_press_event (GtkWidget *widget,
15149                                          GdkEventButton *event,
15150                                          GtkTreeView *tree_view)
15151 {
15152   GdkDevice *keyb_device;
15153
15154   g_return_val_if_fail (GTK_IS_WIDGET (widget), FALSE);
15155
15156   keyb_device = gdk_device_get_associated_device (event->device);
15157   gtk_tree_view_search_dialog_hide (widget, tree_view, keyb_device);
15158
15159   if (event->window == tree_view->priv->bin_window)
15160     gtk_tree_view_button_press (GTK_WIDGET (tree_view), event);
15161
15162   return TRUE;
15163 }
15164
15165 static gboolean
15166 gtk_tree_view_search_scroll_event (GtkWidget *widget,
15167                                    GdkEventScroll *event,
15168                                    GtkTreeView *tree_view)
15169 {
15170   gboolean retval = FALSE;
15171
15172   if (event->direction == GDK_SCROLL_UP)
15173     {
15174       gtk_tree_view_search_move (widget, tree_view, TRUE);
15175       retval = TRUE;
15176     }
15177   else if (event->direction == GDK_SCROLL_DOWN)
15178     {
15179       gtk_tree_view_search_move (widget, tree_view, FALSE);
15180       retval = TRUE;
15181     }
15182
15183   /* renew the flush timeout */
15184   if (retval && tree_view->priv->typeselect_flush_timeout
15185       && !tree_view->priv->search_custom_entry_set)
15186     {
15187       g_source_remove (tree_view->priv->typeselect_flush_timeout);
15188       tree_view->priv->typeselect_flush_timeout =
15189         gdk_threads_add_timeout (GTK_TREE_VIEW_SEARCH_DIALOG_TIMEOUT,
15190                        (GSourceFunc) gtk_tree_view_search_entry_flush_timeout,
15191                        tree_view);
15192     }
15193
15194   return retval;
15195 }
15196
15197 static gboolean
15198 gtk_tree_view_search_key_press_event (GtkWidget *widget,
15199                                       GdkEventKey *event,
15200                                       GtkTreeView *tree_view)
15201 {
15202   GdkModifierType default_accel;
15203   gboolean        retval = FALSE;
15204
15205   g_return_val_if_fail (GTK_IS_WIDGET (widget), FALSE);
15206   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), FALSE);
15207
15208   /* close window and cancel the search */
15209   if (!tree_view->priv->search_custom_entry_set
15210       && (event->keyval == GDK_KEY_Escape ||
15211           event->keyval == GDK_KEY_Tab ||
15212             event->keyval == GDK_KEY_KP_Tab ||
15213             event->keyval == GDK_KEY_ISO_Left_Tab))
15214     {
15215       gtk_tree_view_search_dialog_hide (widget, tree_view,
15216                                         gdk_event_get_device ((GdkEvent *) event));
15217       return TRUE;
15218     }
15219
15220   default_accel = gtk_widget_get_modifier_mask (widget,
15221                                                 GDK_MODIFIER_INTENT_PRIMARY_ACCELERATOR);
15222
15223   /* select previous matching iter */
15224   if (event->keyval == GDK_KEY_Up || event->keyval == GDK_KEY_KP_Up)
15225     {
15226       if (!gtk_tree_view_search_move (widget, tree_view, TRUE))
15227         gtk_widget_error_bell (widget);
15228
15229       retval = TRUE;
15230     }
15231
15232   if (((event->state & (default_accel | GDK_SHIFT_MASK)) == (default_accel | GDK_SHIFT_MASK))
15233       && (event->keyval == GDK_KEY_g || event->keyval == GDK_KEY_G))
15234     {
15235       if (!gtk_tree_view_search_move (widget, tree_view, TRUE))
15236         gtk_widget_error_bell (widget);
15237
15238       retval = TRUE;
15239     }
15240
15241   /* select next matching iter */
15242   if (event->keyval == GDK_KEY_Down || event->keyval == GDK_KEY_KP_Down)
15243     {
15244       if (!gtk_tree_view_search_move (widget, tree_view, FALSE))
15245         gtk_widget_error_bell (widget);
15246
15247       retval = TRUE;
15248     }
15249
15250   if (((event->state & (default_accel | GDK_SHIFT_MASK)) == default_accel)
15251       && (event->keyval == GDK_KEY_g || event->keyval == GDK_KEY_G))
15252     {
15253       if (!gtk_tree_view_search_move (widget, tree_view, FALSE))
15254         gtk_widget_error_bell (widget);
15255
15256       retval = TRUE;
15257     }
15258
15259   /* renew the flush timeout */
15260   if (retval && tree_view->priv->typeselect_flush_timeout
15261       && !tree_view->priv->search_custom_entry_set)
15262     {
15263       g_source_remove (tree_view->priv->typeselect_flush_timeout);
15264       tree_view->priv->typeselect_flush_timeout =
15265         gdk_threads_add_timeout (GTK_TREE_VIEW_SEARCH_DIALOG_TIMEOUT,
15266                        (GSourceFunc) gtk_tree_view_search_entry_flush_timeout,
15267                        tree_view);
15268     }
15269
15270   return retval;
15271 }
15272
15273 /*  this function returns FALSE if there is a search string but
15274  *  nothing was found, and TRUE otherwise.
15275  */
15276 static gboolean
15277 gtk_tree_view_search_move (GtkWidget   *window,
15278                            GtkTreeView *tree_view,
15279                            gboolean     up)
15280 {
15281   gboolean ret;
15282   gint len;
15283   gint count = 0;
15284   const gchar *text;
15285   GtkTreeIter iter;
15286   GtkTreeModel *model;
15287   GtkTreeSelection *selection;
15288
15289   text = gtk_entry_get_text (GTK_ENTRY (tree_view->priv->search_entry));
15290
15291   g_return_val_if_fail (text != NULL, FALSE);
15292
15293   len = strlen (text);
15294
15295   if (up && tree_view->priv->selected_iter == 1)
15296     return strlen (text) < 1;
15297
15298   len = strlen (text);
15299
15300   if (len < 1)
15301     return TRUE;
15302
15303   model = gtk_tree_view_get_model (tree_view);
15304   selection = gtk_tree_view_get_selection (tree_view);
15305
15306   /* search */
15307   gtk_tree_selection_unselect_all (selection);
15308   if (!gtk_tree_model_get_iter_first (model, &iter))
15309     return TRUE;
15310
15311   ret = gtk_tree_view_search_iter (model, selection, &iter, text,
15312                                    &count, up?((tree_view->priv->selected_iter) - 1):((tree_view->priv->selected_iter + 1)));
15313
15314   if (ret)
15315     {
15316       /* found */
15317       tree_view->priv->selected_iter += up?(-1):(1);
15318       return TRUE;
15319     }
15320   else
15321     {
15322       /* return to old iter */
15323       count = 0;
15324       gtk_tree_model_get_iter_first (model, &iter);
15325       gtk_tree_view_search_iter (model, selection,
15326                                  &iter, text,
15327                                  &count, tree_view->priv->selected_iter);
15328       return FALSE;
15329     }
15330 }
15331
15332 static gboolean
15333 gtk_tree_view_search_equal_func (GtkTreeModel *model,
15334                                  gint          column,
15335                                  const gchar  *key,
15336                                  GtkTreeIter  *iter,
15337                                  gpointer      search_data)
15338 {
15339   gboolean retval = TRUE;
15340   const gchar *str;
15341   gchar *normalized_string;
15342   gchar *normalized_key;
15343   gchar *case_normalized_string = NULL;
15344   gchar *case_normalized_key = NULL;
15345   GValue value = G_VALUE_INIT;
15346   GValue transformed = G_VALUE_INIT;
15347
15348   gtk_tree_model_get_value (model, iter, column, &value);
15349
15350   g_value_init (&transformed, G_TYPE_STRING);
15351
15352   if (!g_value_transform (&value, &transformed))
15353     {
15354       g_value_unset (&value);
15355       return TRUE;
15356     }
15357
15358   g_value_unset (&value);
15359
15360   str = g_value_get_string (&transformed);
15361   if (!str)
15362     {
15363       g_value_unset (&transformed);
15364       return TRUE;
15365     }
15366
15367   normalized_string = g_utf8_normalize (str, -1, G_NORMALIZE_ALL);
15368   normalized_key = g_utf8_normalize (key, -1, G_NORMALIZE_ALL);
15369
15370   if (normalized_string && normalized_key)
15371     {
15372       case_normalized_string = g_utf8_casefold (normalized_string, -1);
15373       case_normalized_key = g_utf8_casefold (normalized_key, -1);
15374
15375       if (strncmp (case_normalized_key, case_normalized_string, strlen (case_normalized_key)) == 0)
15376         retval = FALSE;
15377     }
15378
15379   g_value_unset (&transformed);
15380   g_free (normalized_key);
15381   g_free (normalized_string);
15382   g_free (case_normalized_key);
15383   g_free (case_normalized_string);
15384
15385   return retval;
15386 }
15387
15388 static gboolean
15389 gtk_tree_view_search_iter (GtkTreeModel     *model,
15390                            GtkTreeSelection *selection,
15391                            GtkTreeIter      *iter,
15392                            const gchar      *text,
15393                            gint             *count,
15394                            gint              n)
15395 {
15396   GtkRBTree *tree = NULL;
15397   GtkRBNode *node = NULL;
15398   GtkTreePath *path;
15399
15400   GtkTreeView *tree_view = gtk_tree_selection_get_tree_view (selection);
15401
15402   path = gtk_tree_model_get_path (model, iter);
15403   _gtk_tree_view_find_node (tree_view, path, &tree, &node);
15404
15405   do
15406     {
15407       if (! tree_view->priv->search_equal_func (model, tree_view->priv->search_column, text, iter, tree_view->priv->search_user_data))
15408         {
15409           (*count)++;
15410           if (*count == n)
15411             {
15412               gtk_tree_view_scroll_to_cell (tree_view, path, NULL,
15413                                             TRUE, 0.5, 0.0);
15414               gtk_tree_selection_select_iter (selection, iter);
15415               gtk_tree_view_real_set_cursor (tree_view, path, CLAMP_NODE);
15416
15417               if (path)
15418                 gtk_tree_path_free (path);
15419
15420               return TRUE;
15421             }
15422         }
15423
15424       if (node->children)
15425         {
15426           gboolean has_child;
15427           GtkTreeIter tmp;
15428
15429           tree = node->children;
15430           node = _gtk_rbtree_first (tree);
15431
15432           tmp = *iter;
15433           has_child = gtk_tree_model_iter_children (model, iter, &tmp);
15434           gtk_tree_path_down (path);
15435
15436           /* sanity check */
15437           TREE_VIEW_INTERNAL_ASSERT (has_child, FALSE);
15438         }
15439       else
15440         {
15441           gboolean done = FALSE;
15442
15443           do
15444             {
15445               node = _gtk_rbtree_next (tree, node);
15446
15447               if (node)
15448                 {
15449                   gboolean has_next;
15450
15451                   has_next = gtk_tree_model_iter_next (model, iter);
15452
15453                   done = TRUE;
15454                   gtk_tree_path_next (path);
15455
15456                   /* sanity check */
15457                   TREE_VIEW_INTERNAL_ASSERT (has_next, FALSE);
15458                 }
15459               else
15460                 {
15461                   gboolean has_parent;
15462                   GtkTreeIter tmp_iter = *iter;
15463
15464                   node = tree->parent_node;
15465                   tree = tree->parent_tree;
15466
15467                   if (!tree)
15468                     {
15469                       if (path)
15470                         gtk_tree_path_free (path);
15471
15472                       /* we've run out of tree, done with this func */
15473                       return FALSE;
15474                     }
15475
15476                   has_parent = gtk_tree_model_iter_parent (model,
15477                                                            iter,
15478                                                            &tmp_iter);
15479                   gtk_tree_path_up (path);
15480
15481                   /* sanity check */
15482                   TREE_VIEW_INTERNAL_ASSERT (has_parent, FALSE);
15483                 }
15484             }
15485           while (!done);
15486         }
15487     }
15488   while (1);
15489
15490   return FALSE;
15491 }
15492
15493 static void
15494 gtk_tree_view_search_init (GtkWidget   *entry,
15495                            GtkTreeView *tree_view)
15496 {
15497   gint ret;
15498   gint count = 0;
15499   const gchar *text;
15500   GtkTreeIter iter;
15501   GtkTreeModel *model;
15502   GtkTreeSelection *selection;
15503
15504   g_return_if_fail (GTK_IS_ENTRY (entry));
15505   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
15506
15507   text = gtk_entry_get_text (GTK_ENTRY (entry));
15508
15509   model = gtk_tree_view_get_model (tree_view);
15510   selection = gtk_tree_view_get_selection (tree_view);
15511
15512   /* search */
15513   gtk_tree_selection_unselect_all (selection);
15514   if (tree_view->priv->typeselect_flush_timeout
15515       && !tree_view->priv->search_custom_entry_set)
15516     {
15517       g_source_remove (tree_view->priv->typeselect_flush_timeout);
15518       tree_view->priv->typeselect_flush_timeout =
15519         gdk_threads_add_timeout (GTK_TREE_VIEW_SEARCH_DIALOG_TIMEOUT,
15520                        (GSourceFunc) gtk_tree_view_search_entry_flush_timeout,
15521                        tree_view);
15522     }
15523
15524   if (*text == '\0')
15525     return;
15526
15527   if (!gtk_tree_model_get_iter_first (model, &iter))
15528     return;
15529
15530   ret = gtk_tree_view_search_iter (model, selection,
15531                                    &iter, text,
15532                                    &count, 1);
15533
15534   if (ret)
15535     tree_view->priv->selected_iter = 1;
15536 }
15537
15538 void
15539 _gtk_tree_view_remove_editable (GtkTreeView       *tree_view,
15540                                 GtkTreeViewColumn *column,
15541                                 GtkCellEditable   *cell_editable)
15542 {
15543   if (tree_view->priv->edited_column == NULL)
15544     return;
15545
15546   g_return_if_fail (column == tree_view->priv->edited_column);
15547
15548   tree_view->priv->edited_column = NULL;
15549
15550   if (gtk_widget_has_focus (GTK_WIDGET (cell_editable)))
15551     gtk_widget_grab_focus (GTK_WIDGET (tree_view));
15552
15553   gtk_container_remove (GTK_CONTAINER (tree_view),
15554                         GTK_WIDGET (cell_editable));
15555
15556   /* FIXME should only redraw a single node */
15557   gtk_widget_queue_draw (GTK_WIDGET (tree_view));
15558 }
15559
15560 static gboolean
15561 gtk_tree_view_start_editing (GtkTreeView *tree_view,
15562                              GtkTreePath *cursor_path,
15563                              gboolean     edit_only)
15564 {
15565   GtkTreeIter iter;
15566   GdkRectangle cell_area;
15567   GtkTreeViewColumn *focus_column;
15568   guint flags = 0; /* can be 0, as the flags are primarily for rendering */
15569   gint retval = FALSE;
15570   GtkRBTree *cursor_tree;
15571   GtkRBNode *cursor_node;
15572
15573   g_assert (tree_view->priv->focus_column);
15574   focus_column = tree_view->priv->focus_column;
15575
15576   if (!gtk_widget_get_realized (GTK_WIDGET (tree_view)))
15577     return FALSE;
15578
15579   if (_gtk_tree_view_find_node (tree_view, cursor_path, &cursor_tree, &cursor_node) ||
15580       cursor_node == NULL)
15581     return FALSE;
15582
15583   gtk_tree_model_get_iter (tree_view->priv->model, &iter, cursor_path);
15584
15585   validate_row (tree_view, cursor_tree, cursor_node, &iter, cursor_path);
15586
15587   gtk_tree_view_column_cell_set_cell_data (focus_column,
15588                                            tree_view->priv->model,
15589                                            &iter,
15590                                            GTK_RBNODE_FLAG_SET (cursor_node, GTK_RBNODE_IS_PARENT),
15591                                            cursor_node->children ? TRUE : FALSE);
15592   gtk_tree_view_get_cell_area (tree_view,
15593                                cursor_path,
15594                                focus_column,
15595                                &cell_area);
15596
15597   if (gtk_cell_area_activate (gtk_cell_layout_get_area (GTK_CELL_LAYOUT (focus_column)),
15598                               _gtk_tree_view_column_get_context (focus_column),
15599                               GTK_WIDGET (tree_view),
15600                               &cell_area,
15601                               flags, edit_only))
15602     retval = TRUE;
15603
15604   return retval;
15605 }
15606
15607 void
15608 _gtk_tree_view_add_editable (GtkTreeView       *tree_view,
15609                              GtkTreeViewColumn *column,
15610                              GtkTreePath       *path,
15611                              GtkCellEditable   *cell_editable,
15612                              GdkRectangle      *cell_area)
15613 {
15614   gint pre_val = gtk_adjustment_get_value (tree_view->priv->vadjustment);
15615   GtkRequisition requisition;
15616
15617   tree_view->priv->edited_column = column;
15618
15619   gtk_tree_view_real_set_cursor (tree_view, path, CLAMP_NODE);
15620   cell_area->y += pre_val - (int)gtk_adjustment_get_value (tree_view->priv->vadjustment);
15621
15622   gtk_widget_get_preferred_size (GTK_WIDGET (cell_editable),
15623                                  &requisition, NULL);
15624
15625   tree_view->priv->draw_keyfocus = TRUE;
15626
15627   if (requisition.height < cell_area->height)
15628     {
15629       gint diff = cell_area->height - requisition.height;
15630       gtk_tree_view_put (tree_view,
15631                          GTK_WIDGET (cell_editable),
15632                          cell_area->x, cell_area->y + diff/2,
15633                          cell_area->width, requisition.height);
15634     }
15635   else
15636     {
15637       gtk_tree_view_put (tree_view,
15638                          GTK_WIDGET (cell_editable),
15639                          cell_area->x, cell_area->y,
15640                          cell_area->width, cell_area->height);
15641     }
15642 }
15643
15644 static void
15645 gtk_tree_view_stop_editing (GtkTreeView *tree_view,
15646                             gboolean     cancel_editing)
15647 {
15648   GtkTreeViewColumn *column;
15649
15650   if (tree_view->priv->edited_column == NULL)
15651     return;
15652
15653   /*
15654    * This is very evil. We need to do this, because
15655    * gtk_cell_editable_editing_done may trigger gtk_tree_view_row_changed
15656    * later on. If gtk_tree_view_row_changed notices
15657    * tree_view->priv->edited_column != NULL, it'll call
15658    * gtk_tree_view_stop_editing again. Bad things will happen then.
15659    *
15660    * Please read that again if you intend to modify anything here.
15661    */
15662
15663   column = tree_view->priv->edited_column;
15664   gtk_cell_area_stop_editing (gtk_cell_layout_get_area (GTK_CELL_LAYOUT (column)), cancel_editing);
15665   tree_view->priv->edited_column = NULL;
15666 }
15667
15668
15669 /**
15670  * gtk_tree_view_set_hover_selection:
15671  * @tree_view: a #GtkTreeView
15672  * @hover: %TRUE to enable hover selection mode
15673  *
15674  * Enables or disables the hover selection mode of @tree_view.
15675  * Hover selection makes the selected row follow the pointer.
15676  * Currently, this works only for the selection modes
15677  * %GTK_SELECTION_SINGLE and %GTK_SELECTION_BROWSE.
15678  *
15679  * Since: 2.6
15680  **/
15681 void
15682 gtk_tree_view_set_hover_selection (GtkTreeView *tree_view,
15683                                    gboolean     hover)
15684 {
15685   hover = hover != FALSE;
15686
15687   if (hover != tree_view->priv->hover_selection)
15688     {
15689       tree_view->priv->hover_selection = hover;
15690
15691       g_object_notify (G_OBJECT (tree_view), "hover-selection");
15692     }
15693 }
15694
15695 /**
15696  * gtk_tree_view_get_hover_selection:
15697  * @tree_view: a #GtkTreeView
15698  *
15699  * Returns whether hover selection mode is turned on for @tree_view.
15700  *
15701  * Return value: %TRUE if @tree_view is in hover selection mode
15702  *
15703  * Since: 2.6
15704  **/
15705 gboolean
15706 gtk_tree_view_get_hover_selection (GtkTreeView *tree_view)
15707 {
15708   return tree_view->priv->hover_selection;
15709 }
15710
15711 /**
15712  * gtk_tree_view_set_hover_expand:
15713  * @tree_view: a #GtkTreeView
15714  * @expand: %TRUE to enable hover selection mode
15715  *
15716  * Enables or disables the hover expansion mode of @tree_view.
15717  * Hover expansion makes rows expand or collapse if the pointer
15718  * moves over them.
15719  *
15720  * Since: 2.6
15721  **/
15722 void
15723 gtk_tree_view_set_hover_expand (GtkTreeView *tree_view,
15724                                 gboolean     expand)
15725 {
15726   expand = expand != FALSE;
15727
15728   if (expand != tree_view->priv->hover_expand)
15729     {
15730       tree_view->priv->hover_expand = expand;
15731
15732       g_object_notify (G_OBJECT (tree_view), "hover-expand");
15733     }
15734 }
15735
15736 /**
15737  * gtk_tree_view_get_hover_expand:
15738  * @tree_view: a #GtkTreeView
15739  *
15740  * Returns whether hover expansion mode is turned on for @tree_view.
15741  *
15742  * Return value: %TRUE if @tree_view is in hover expansion mode
15743  *
15744  * Since: 2.6
15745  **/
15746 gboolean
15747 gtk_tree_view_get_hover_expand (GtkTreeView *tree_view)
15748 {
15749   return tree_view->priv->hover_expand;
15750 }
15751
15752 /**
15753  * gtk_tree_view_set_rubber_banding:
15754  * @tree_view: a #GtkTreeView
15755  * @enable: %TRUE to enable rubber banding
15756  *
15757  * Enables or disables rubber banding in @tree_view.  If the selection mode
15758  * is #GTK_SELECTION_MULTIPLE, rubber banding will allow the user to select
15759  * multiple rows by dragging the mouse.
15760  *
15761  * Since: 2.10
15762  **/
15763 void
15764 gtk_tree_view_set_rubber_banding (GtkTreeView *tree_view,
15765                                   gboolean     enable)
15766 {
15767   enable = enable != FALSE;
15768
15769   if (enable != tree_view->priv->rubber_banding_enable)
15770     {
15771       tree_view->priv->rubber_banding_enable = enable;
15772
15773       g_object_notify (G_OBJECT (tree_view), "rubber-banding");
15774     }
15775 }
15776
15777 /**
15778  * gtk_tree_view_get_rubber_banding:
15779  * @tree_view: a #GtkTreeView
15780  *
15781  * Returns whether rubber banding is turned on for @tree_view.  If the
15782  * selection mode is #GTK_SELECTION_MULTIPLE, rubber banding will allow the
15783  * user to select multiple rows by dragging the mouse.
15784  *
15785  * Return value: %TRUE if rubber banding in @tree_view is enabled.
15786  *
15787  * Since: 2.10
15788  **/
15789 gboolean
15790 gtk_tree_view_get_rubber_banding (GtkTreeView *tree_view)
15791 {
15792   return tree_view->priv->rubber_banding_enable;
15793 }
15794
15795 /**
15796  * gtk_tree_view_is_rubber_banding_active:
15797  * @tree_view: a #GtkTreeView
15798  *
15799  * Returns whether a rubber banding operation is currently being done
15800  * in @tree_view.
15801  *
15802  * Return value: %TRUE if a rubber banding operation is currently being
15803  * done in @tree_view.
15804  *
15805  * Since: 2.12
15806  **/
15807 gboolean
15808 gtk_tree_view_is_rubber_banding_active (GtkTreeView *tree_view)
15809 {
15810   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), FALSE);
15811
15812   if (tree_view->priv->rubber_banding_enable
15813       && tree_view->priv->rubber_band_status == RUBBER_BAND_ACTIVE)
15814     return TRUE;
15815
15816   return FALSE;
15817 }
15818
15819 /**
15820  * gtk_tree_view_get_row_separator_func: (skip)
15821  * @tree_view: a #GtkTreeView
15822  *
15823  * Returns the current row separator function.
15824  *
15825  * Return value: the current row separator function.
15826  *
15827  * Since: 2.6
15828  **/
15829 GtkTreeViewRowSeparatorFunc
15830 gtk_tree_view_get_row_separator_func (GtkTreeView *tree_view)
15831 {
15832   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), NULL);
15833
15834   return tree_view->priv->row_separator_func;
15835 }
15836
15837 /**
15838  * gtk_tree_view_set_row_separator_func:
15839  * @tree_view: a #GtkTreeView
15840  * @func: (allow-none): a #GtkTreeViewRowSeparatorFunc
15841  * @data: (allow-none): user data to pass to @func, or %NULL
15842  * @destroy: (allow-none): destroy notifier for @data, or %NULL
15843  *
15844  * Sets the row separator function, which is used to determine
15845  * whether a row should be drawn as a separator. If the row separator
15846  * function is %NULL, no separators are drawn. This is the default value.
15847  *
15848  * Since: 2.6
15849  **/
15850 void
15851 gtk_tree_view_set_row_separator_func (GtkTreeView                 *tree_view,
15852                                       GtkTreeViewRowSeparatorFunc  func,
15853                                       gpointer                     data,
15854                                       GDestroyNotify               destroy)
15855 {
15856   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
15857
15858   if (tree_view->priv->row_separator_destroy)
15859     tree_view->priv->row_separator_destroy (tree_view->priv->row_separator_data);
15860
15861   tree_view->priv->row_separator_func = func;
15862   tree_view->priv->row_separator_data = data;
15863   tree_view->priv->row_separator_destroy = destroy;
15864
15865   /* Have the tree recalculate heights */
15866   _gtk_rbtree_mark_invalid (tree_view->priv->tree);
15867   gtk_widget_queue_resize (GTK_WIDGET (tree_view));
15868 }
15869
15870
15871 static void
15872 gtk_tree_view_grab_notify (GtkWidget *widget,
15873                            gboolean   was_grabbed)
15874 {
15875   GtkTreeView *tree_view = GTK_TREE_VIEW (widget);
15876
15877   tree_view->priv->in_grab = !was_grabbed;
15878
15879   if (!was_grabbed)
15880     {
15881       tree_view->priv->pressed_button = -1;
15882
15883       if (tree_view->priv->rubber_band_status)
15884         gtk_tree_view_stop_rubber_band (tree_view);
15885     }
15886 }
15887
15888 static void
15889 gtk_tree_view_state_flags_changed (GtkWidget     *widget,
15890                                    GtkStateFlags  previous_state)
15891 {
15892   if (gtk_widget_get_realized (widget))
15893     gtk_tree_view_ensure_background (GTK_TREE_VIEW (widget));
15894
15895   gtk_widget_queue_draw (widget);
15896 }
15897
15898 /**
15899  * gtk_tree_view_get_grid_lines:
15900  * @tree_view: a #GtkTreeView
15901  *
15902  * Returns which grid lines are enabled in @tree_view.
15903  *
15904  * Return value: a #GtkTreeViewGridLines value indicating which grid lines
15905  * are enabled.
15906  *
15907  * Since: 2.10
15908  */
15909 GtkTreeViewGridLines
15910 gtk_tree_view_get_grid_lines (GtkTreeView *tree_view)
15911 {
15912   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), 0);
15913
15914   return tree_view->priv->grid_lines;
15915 }
15916
15917 /**
15918  * gtk_tree_view_set_grid_lines:
15919  * @tree_view: a #GtkTreeView
15920  * @grid_lines: a #GtkTreeViewGridLines value indicating which grid lines to
15921  * enable.
15922  *
15923  * Sets which grid lines to draw in @tree_view.
15924  *
15925  * Since: 2.10
15926  */
15927 void
15928 gtk_tree_view_set_grid_lines (GtkTreeView           *tree_view,
15929                               GtkTreeViewGridLines   grid_lines)
15930 {
15931   GtkTreeViewPrivate *priv;
15932   GtkWidget *widget;
15933   GtkTreeViewGridLines old_grid_lines;
15934
15935   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
15936
15937   priv = tree_view->priv;
15938   widget = GTK_WIDGET (tree_view);
15939
15940   old_grid_lines = priv->grid_lines;
15941   priv->grid_lines = grid_lines;
15942
15943   if (gtk_widget_get_realized (widget))
15944     {
15945       if (grid_lines == GTK_TREE_VIEW_GRID_LINES_NONE &&
15946           priv->grid_line_width)
15947         {
15948           priv->grid_line_width = 0;
15949         }
15950
15951       if (grid_lines != GTK_TREE_VIEW_GRID_LINES_NONE &&
15952           !priv->grid_line_width)
15953         {
15954           gint8 *dash_list;
15955
15956           gtk_widget_style_get (widget,
15957                                 "grid-line-width", &priv->grid_line_width,
15958                                 "grid-line-pattern", (gchar *)&dash_list,
15959                                 NULL);
15960
15961           if (dash_list)
15962             {
15963               priv->grid_line_dashes[0] = dash_list[0];
15964               if (dash_list[0])
15965                 priv->grid_line_dashes[1] = dash_list[1];
15966
15967               g_free (dash_list);
15968             }
15969           else
15970             {
15971               priv->grid_line_dashes[0] = 1;
15972               priv->grid_line_dashes[1] = 1;
15973             }
15974         }
15975     }
15976
15977   if (old_grid_lines != grid_lines)
15978     {
15979       gtk_widget_queue_draw (GTK_WIDGET (tree_view));
15980
15981       g_object_notify (G_OBJECT (tree_view), "enable-grid-lines");
15982     }
15983 }
15984
15985 /**
15986  * gtk_tree_view_get_enable_tree_lines:
15987  * @tree_view: a #GtkTreeView.
15988  *
15989  * Returns whether or not tree lines are drawn in @tree_view.
15990  *
15991  * Return value: %TRUE if tree lines are drawn in @tree_view, %FALSE
15992  * otherwise.
15993  *
15994  * Since: 2.10
15995  */
15996 gboolean
15997 gtk_tree_view_get_enable_tree_lines (GtkTreeView *tree_view)
15998 {
15999   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), FALSE);
16000
16001   return tree_view->priv->tree_lines_enabled;
16002 }
16003
16004 /**
16005  * gtk_tree_view_set_enable_tree_lines:
16006  * @tree_view: a #GtkTreeView
16007  * @enabled: %TRUE to enable tree line drawing, %FALSE otherwise.
16008  *
16009  * Sets whether to draw lines interconnecting the expanders in @tree_view.
16010  * This does not have any visible effects for lists.
16011  *
16012  * Since: 2.10
16013  */
16014 void
16015 gtk_tree_view_set_enable_tree_lines (GtkTreeView *tree_view,
16016                                      gboolean     enabled)
16017 {
16018   GtkTreeViewPrivate *priv;
16019   GtkWidget *widget;
16020   gboolean was_enabled;
16021
16022   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
16023
16024   enabled = enabled != FALSE;
16025
16026   priv = tree_view->priv;
16027   widget = GTK_WIDGET (tree_view);
16028
16029   was_enabled = priv->tree_lines_enabled;
16030
16031   priv->tree_lines_enabled = enabled;
16032
16033   if (gtk_widget_get_realized (widget))
16034     {
16035       if (!enabled && priv->tree_line_width)
16036         {
16037           priv->tree_line_width = 0;
16038         }
16039
16040       if (enabled && !priv->tree_line_width)
16041         {
16042           gint8 *dash_list;
16043           gtk_widget_style_get (widget,
16044                                 "tree-line-width", &priv->tree_line_width,
16045                                 "tree-line-pattern", (gchar *)&dash_list,
16046                                 NULL);
16047
16048           if (dash_list)
16049             {
16050               priv->tree_line_dashes[0] = dash_list[0];
16051               if (dash_list[0])
16052                 priv->tree_line_dashes[1] = dash_list[1];
16053
16054               g_free (dash_list);
16055             }
16056           else
16057             {
16058               priv->tree_line_dashes[0] = 1;
16059               priv->tree_line_dashes[1] = 1;
16060             }
16061         }
16062     }
16063
16064   if (was_enabled != enabled)
16065     {
16066       gtk_widget_queue_draw (GTK_WIDGET (tree_view));
16067
16068       g_object_notify (G_OBJECT (tree_view), "enable-tree-lines");
16069     }
16070 }
16071
16072
16073 /**
16074  * gtk_tree_view_set_show_expanders:
16075  * @tree_view: a #GtkTreeView
16076  * @enabled: %TRUE to enable expander drawing, %FALSE otherwise.
16077  *
16078  * Sets whether to draw and enable expanders and indent child rows in
16079  * @tree_view.  When disabled there will be no expanders visible in trees
16080  * and there will be no way to expand and collapse rows by default.  Also
16081  * note that hiding the expanders will disable the default indentation.  You
16082  * can set a custom indentation in this case using
16083  * gtk_tree_view_set_level_indentation().
16084  * This does not have any visible effects for lists.
16085  *
16086  * Since: 2.12
16087  */
16088 void
16089 gtk_tree_view_set_show_expanders (GtkTreeView *tree_view,
16090                                   gboolean     enabled)
16091 {
16092   gboolean was_enabled;
16093
16094   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
16095
16096   enabled = enabled != FALSE;
16097   was_enabled = tree_view->priv->show_expanders;
16098
16099   tree_view->priv->show_expanders = enabled == TRUE;
16100
16101   if (enabled != was_enabled)
16102     gtk_widget_queue_draw (GTK_WIDGET (tree_view));
16103 }
16104
16105 /**
16106  * gtk_tree_view_get_show_expanders:
16107  * @tree_view: a #GtkTreeView.
16108  *
16109  * Returns whether or not expanders are drawn in @tree_view.
16110  *
16111  * Return value: %TRUE if expanders are drawn in @tree_view, %FALSE
16112  * otherwise.
16113  *
16114  * Since: 2.12
16115  */
16116 gboolean
16117 gtk_tree_view_get_show_expanders (GtkTreeView *tree_view)
16118 {
16119   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), FALSE);
16120
16121   return tree_view->priv->show_expanders;
16122 }
16123
16124 /**
16125  * gtk_tree_view_set_level_indentation:
16126  * @tree_view: a #GtkTreeView
16127  * @indentation: the amount, in pixels, of extra indentation in @tree_view.
16128  *
16129  * Sets the amount of extra indentation for child levels to use in @tree_view
16130  * in addition to the default indentation.  The value should be specified in
16131  * pixels, a value of 0 disables this feature and in this case only the default
16132  * indentation will be used.
16133  * This does not have any visible effects for lists.
16134  *
16135  * Since: 2.12
16136  */
16137 void
16138 gtk_tree_view_set_level_indentation (GtkTreeView *tree_view,
16139                                      gint         indentation)
16140 {
16141   tree_view->priv->level_indentation = indentation;
16142
16143   gtk_widget_queue_draw (GTK_WIDGET (tree_view));
16144 }
16145
16146 /**
16147  * gtk_tree_view_get_level_indentation:
16148  * @tree_view: a #GtkTreeView.
16149  *
16150  * Returns the amount, in pixels, of extra indentation for child levels
16151  * in @tree_view.
16152  *
16153  * Return value: the amount of extra indentation for child levels in
16154  * @tree_view.  A return value of 0 means that this feature is disabled.
16155  *
16156  * Since: 2.12
16157  */
16158 gint
16159 gtk_tree_view_get_level_indentation (GtkTreeView *tree_view)
16160 {
16161   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), 0);
16162
16163   return tree_view->priv->level_indentation;
16164 }
16165
16166 /**
16167  * gtk_tree_view_set_tooltip_row:
16168  * @tree_view: a #GtkTreeView
16169  * @tooltip: a #GtkTooltip
16170  * @path: a #GtkTreePath
16171  *
16172  * Sets the tip area of @tooltip to be the area covered by the row at @path.
16173  * See also gtk_tree_view_set_tooltip_column() for a simpler alternative.
16174  * See also gtk_tooltip_set_tip_area().
16175  *
16176  * Since: 2.12
16177  */
16178 void
16179 gtk_tree_view_set_tooltip_row (GtkTreeView *tree_view,
16180                                GtkTooltip  *tooltip,
16181                                GtkTreePath *path)
16182 {
16183   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
16184   g_return_if_fail (GTK_IS_TOOLTIP (tooltip));
16185
16186   gtk_tree_view_set_tooltip_cell (tree_view, tooltip, path, NULL, NULL);
16187 }
16188
16189 /**
16190  * gtk_tree_view_set_tooltip_cell:
16191  * @tree_view: a #GtkTreeView
16192  * @tooltip: a #GtkTooltip
16193  * @path: (allow-none): a #GtkTreePath or %NULL
16194  * @column: (allow-none): a #GtkTreeViewColumn or %NULL
16195  * @cell: (allow-none): a #GtkCellRenderer or %NULL
16196  *
16197  * Sets the tip area of @tooltip to the area @path, @column and @cell have
16198  * in common.  For example if @path is %NULL and @column is set, the tip
16199  * area will be set to the full area covered by @column.  See also
16200  * gtk_tooltip_set_tip_area().
16201  *
16202  * Note that if @path is not specified and @cell is set and part of a column
16203  * containing the expander, the tooltip might not show and hide at the correct
16204  * position.  In such cases @path must be set to the current node under the
16205  * mouse cursor for this function to operate correctly.
16206  *
16207  * See also gtk_tree_view_set_tooltip_column() for a simpler alternative.
16208  *
16209  * Since: 2.12
16210  */
16211 void
16212 gtk_tree_view_set_tooltip_cell (GtkTreeView       *tree_view,
16213                                 GtkTooltip        *tooltip,
16214                                 GtkTreePath       *path,
16215                                 GtkTreeViewColumn *column,
16216                                 GtkCellRenderer   *cell)
16217 {
16218   GtkAllocation allocation;
16219   GdkRectangle rect;
16220
16221   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
16222   g_return_if_fail (GTK_IS_TOOLTIP (tooltip));
16223   g_return_if_fail (column == NULL || GTK_IS_TREE_VIEW_COLUMN (column));
16224   g_return_if_fail (cell == NULL || GTK_IS_CELL_RENDERER (cell));
16225
16226   /* Determine x values. */
16227   if (column && cell)
16228     {
16229       GdkRectangle tmp;
16230       gint start, width;
16231
16232       /* We always pass in path here, whether it is NULL or not.
16233        * For cells in expander columns path must be specified so that
16234        * we can correctly account for the indentation.  This also means
16235        * that the tooltip is constrained vertically by the "Determine y
16236        * values" code below; this is not a real problem since cells actually
16237        * don't stretch vertically in constrast to columns.
16238        */
16239       gtk_tree_view_get_cell_area (tree_view, path, column, &tmp);
16240       gtk_tree_view_column_cell_get_position (column, cell, &start, &width);
16241
16242       gtk_tree_view_convert_bin_window_to_widget_coords (tree_view,
16243                                                          tmp.x + start, 0,
16244                                                          &rect.x, NULL);
16245       rect.width = width;
16246     }
16247   else if (column)
16248     {
16249       GdkRectangle tmp;
16250
16251       gtk_tree_view_get_background_area (tree_view, NULL, column, &tmp);
16252       gtk_tree_view_convert_bin_window_to_widget_coords (tree_view,
16253                                                          tmp.x, 0,
16254                                                          &rect.x, NULL);
16255       rect.width = tmp.width;
16256     }
16257   else
16258     {
16259       gtk_widget_get_allocation (GTK_WIDGET (tree_view), &allocation);
16260       rect.x = 0;
16261       rect.width = allocation.width;
16262     }
16263
16264   /* Determine y values. */
16265   if (path)
16266     {
16267       GdkRectangle tmp;
16268
16269       gtk_tree_view_get_background_area (tree_view, path, NULL, &tmp);
16270       gtk_tree_view_convert_bin_window_to_widget_coords (tree_view,
16271                                                          0, tmp.y,
16272                                                          NULL, &rect.y);
16273       rect.height = tmp.height;
16274     }
16275   else
16276     {
16277       rect.y = 0;
16278       rect.height = gtk_adjustment_get_page_size (tree_view->priv->vadjustment);
16279     }
16280
16281   gtk_tooltip_set_tip_area (tooltip, &rect);
16282 }
16283
16284 /**
16285  * gtk_tree_view_get_tooltip_context:
16286  * @tree_view: a #GtkTreeView
16287  * @x: (inout): the x coordinate (relative to widget coordinates)
16288  * @y: (inout): the y coordinate (relative to widget coordinates)
16289  * @keyboard_tip: whether this is a keyboard tooltip or not
16290  * @model: (out) (allow-none) (transfer none): a pointer to receive a
16291  *         #GtkTreeModel or %NULL
16292  * @path: (out) (allow-none): a pointer to receive a #GtkTreePath or %NULL
16293  * @iter: (out) (allow-none): a pointer to receive a #GtkTreeIter or %NULL
16294  *
16295  * This function is supposed to be used in a #GtkWidget::query-tooltip
16296  * signal handler for #GtkTreeView.  The @x, @y and @keyboard_tip values
16297  * which are received in the signal handler, should be passed to this
16298  * function without modification.
16299  *
16300  * The return value indicates whether there is a tree view row at the given
16301  * coordinates (%TRUE) or not (%FALSE) for mouse tooltips.  For keyboard
16302  * tooltips the row returned will be the cursor row.  When %TRUE, then any of
16303  * @model, @path and @iter which have been provided will be set to point to
16304  * that row and the corresponding model.  @x and @y will always be converted
16305  * to be relative to @tree_view's bin_window if @keyboard_tooltip is %FALSE.
16306  *
16307  * Return value: whether or not the given tooltip context points to a row.
16308  *
16309  * Since: 2.12
16310  */
16311 gboolean
16312 gtk_tree_view_get_tooltip_context (GtkTreeView   *tree_view,
16313                                    gint          *x,
16314                                    gint          *y,
16315                                    gboolean       keyboard_tip,
16316                                    GtkTreeModel **model,
16317                                    GtkTreePath  **path,
16318                                    GtkTreeIter   *iter)
16319 {
16320   GtkTreePath *tmppath = NULL;
16321
16322   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), FALSE);
16323   g_return_val_if_fail (x != NULL, FALSE);
16324   g_return_val_if_fail (y != NULL, FALSE);
16325
16326   if (keyboard_tip)
16327     {
16328       gtk_tree_view_get_cursor (tree_view, &tmppath, NULL);
16329
16330       if (!tmppath)
16331         return FALSE;
16332     }
16333   else
16334     {
16335       gtk_tree_view_convert_widget_to_bin_window_coords (tree_view, *x, *y,
16336                                                          x, y);
16337
16338       if (!gtk_tree_view_get_path_at_pos (tree_view, *x, *y,
16339                                           &tmppath, NULL, NULL, NULL))
16340         return FALSE;
16341     }
16342
16343   if (model)
16344     *model = gtk_tree_view_get_model (tree_view);
16345
16346   if (iter)
16347     gtk_tree_model_get_iter (gtk_tree_view_get_model (tree_view),
16348                              iter, tmppath);
16349
16350   if (path)
16351     *path = tmppath;
16352   else
16353     gtk_tree_path_free (tmppath);
16354
16355   return TRUE;
16356 }
16357
16358 static gboolean
16359 gtk_tree_view_set_tooltip_query_cb (GtkWidget  *widget,
16360                                     gint        x,
16361                                     gint        y,
16362                                     gboolean    keyboard_tip,
16363                                     GtkTooltip *tooltip,
16364                                     gpointer    data)
16365 {
16366   GValue value = G_VALUE_INIT;
16367   GValue transformed = G_VALUE_INIT;
16368   GtkTreeIter iter;
16369   GtkTreePath *path;
16370   GtkTreeModel *model;
16371   GtkTreeView *tree_view = GTK_TREE_VIEW (widget);
16372
16373   if (!gtk_tree_view_get_tooltip_context (GTK_TREE_VIEW (widget),
16374                                           &x, &y,
16375                                           keyboard_tip,
16376                                           &model, &path, &iter))
16377     return FALSE;
16378
16379   gtk_tree_model_get_value (model, &iter,
16380                             tree_view->priv->tooltip_column, &value);
16381
16382   g_value_init (&transformed, G_TYPE_STRING);
16383
16384   if (!g_value_transform (&value, &transformed))
16385     {
16386       g_value_unset (&value);
16387       gtk_tree_path_free (path);
16388
16389       return FALSE;
16390     }
16391
16392   g_value_unset (&value);
16393
16394   if (!g_value_get_string (&transformed))
16395     {
16396       g_value_unset (&transformed);
16397       gtk_tree_path_free (path);
16398
16399       return FALSE;
16400     }
16401
16402   gtk_tooltip_set_markup (tooltip, g_value_get_string (&transformed));
16403   gtk_tree_view_set_tooltip_row (tree_view, tooltip, path);
16404
16405   gtk_tree_path_free (path);
16406   g_value_unset (&transformed);
16407
16408   return TRUE;
16409 }
16410
16411 /**
16412  * gtk_tree_view_set_tooltip_column:
16413  * @tree_view: a #GtkTreeView
16414  * @column: an integer, which is a valid column number for @tree_view's model
16415  *
16416  * If you only plan to have simple (text-only) tooltips on full rows, you
16417  * can use this function to have #GtkTreeView handle these automatically
16418  * for you. @column should be set to the column in @tree_view's model
16419  * containing the tooltip texts, or -1 to disable this feature.
16420  *
16421  * When enabled, #GtkWidget:has-tooltip will be set to %TRUE and
16422  * @tree_view will connect a #GtkWidget::query-tooltip signal handler.
16423  *
16424  * Note that the signal handler sets the text with gtk_tooltip_set_markup(),
16425  * so &amp;, &lt;, etc have to be escaped in the text.
16426  *
16427  * Since: 2.12
16428  */
16429 void
16430 gtk_tree_view_set_tooltip_column (GtkTreeView *tree_view,
16431                                   gint         column)
16432 {
16433   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
16434
16435   if (column == tree_view->priv->tooltip_column)
16436     return;
16437
16438   if (column == -1)
16439     {
16440       g_signal_handlers_disconnect_by_func (tree_view,
16441                                             gtk_tree_view_set_tooltip_query_cb,
16442                                             NULL);
16443       gtk_widget_set_has_tooltip (GTK_WIDGET (tree_view), FALSE);
16444     }
16445   else
16446     {
16447       if (tree_view->priv->tooltip_column == -1)
16448         {
16449           g_signal_connect (tree_view, "query-tooltip",
16450                             G_CALLBACK (gtk_tree_view_set_tooltip_query_cb), NULL);
16451           gtk_widget_set_has_tooltip (GTK_WIDGET (tree_view), TRUE);
16452         }
16453     }
16454
16455   tree_view->priv->tooltip_column = column;
16456   g_object_notify (G_OBJECT (tree_view), "tooltip-column");
16457 }
16458
16459 /**
16460  * gtk_tree_view_get_tooltip_column:
16461  * @tree_view: a #GtkTreeView
16462  *
16463  * Returns the column of @tree_view's model which is being used for
16464  * displaying tooltips on @tree_view's rows.
16465  *
16466  * Return value: the index of the tooltip column that is currently being
16467  * used, or -1 if this is disabled.
16468  *
16469  * Since: 2.12
16470  */
16471 gint
16472 gtk_tree_view_get_tooltip_column (GtkTreeView *tree_view)
16473 {
16474   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), 0);
16475
16476   return tree_view->priv->tooltip_column;
16477 }