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

   1 /* gtktreeview.c
   2  * Copyright (C) 2000  Red Hat, Inc.,  Jonathan Blandford <jrb@redhat.com>
   3  *
   4  * This library is free software; you can redistribute it and/or
   5  * modify it under the terms of the GNU Library General Public
   6  * License as published by the Free Software Foundation; either
   7  * version 2 of the License, or (at your option) any later version.
   8  *
   9  * This library is distributed in the hope that it will be useful,
  10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  12  * Library General Public License for more details.
  13  *
  14  * You should have received a copy of the GNU Library General Public
  15  * License along with this library; if not, write to the
  16  * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
  17  * Boston, MA 02111-1307, USA.
  18  */
  19
  20
  21 #include "config.h"
  22 #include <string.h>
  23 #include <gdk/gdkkeysyms.h>
  24
  25 #include "gtktreeview.h"
  26 #include "gtkrbtree.h"
  27 #include "gtktreednd.h"
  28 #include "gtktreeprivate.h"
  29 #include "gtkcellrenderer.h"
  30 #include "gtkmain.h"
  31 #include "gtkmarshalers.h"
  32 #include "gtkbuildable.h"
  33 #include "gtkbutton.h"
  34 #include "gtkalignment.h"
  35 #include "gtklabel.h"
  36 #include "gtkhbox.h"
  37 #include "gtkvbox.h"
  38 #include "gtkarrow.h"
  39 #include "gtkintl.h"
  40 #include "gtkbindings.h"
  41 #include "gtkcontainer.h"
  42 #include "gtkentry.h"
  43 #include "gtkframe.h"
  44 #include "gtktreemodelsort.h"
  45 #include "gtktooltip.h"
  46 #include "gtkprivate.h"
  47 #include "gtkalias.h"
  48
  49 #define GTK_TREE_VIEW_PRIORITY_VALIDATE (GDK_PRIORITY_REDRAW + 5)
  50 #define GTK_TREE_VIEW_PRIORITY_SCROLL_SYNC (GTK_TREE_VIEW_PRIORITY_VALIDATE + 2)
  51 #define GTK_TREE_VIEW_TIME_MS_PER_IDLE 30
  52 #define SCROLL_EDGE_SIZE 15
  53 #define EXPANDER_EXTRA_PADDING 4
  54 #define GTK_TREE_VIEW_SEARCH_DIALOG_TIMEOUT 5000
  55 #define AUTO_EXPAND_TIMEOUT 500
  56
  57 /* The "background" areas of all rows/cells add up to cover the entire tree.
  58  * The background includes all inter-row and inter-cell spacing.
  59  * The "cell" areas are the cell_area passed in to gtk_cell_renderer_render(),
  60  * i.e. just the cells, no spacing.
  61  */
  62
  63 #define BACKGROUND_HEIGHT(node) (GTK_RBNODE_GET_HEIGHT (node))
  64 #define CELL_HEIGHT(node, separator) ((BACKGROUND_HEIGHT (node)) - (separator))
  65
  66 /* Translate from bin_window coordinates to rbtree (tree coordinates) and
  67  * vice versa.
  68  */
  69 #define TREE_WINDOW_Y_TO_RBTREE_Y(tree_view,y) ((y) + tree_view->priv->dy)
  70 #define RBTREE_Y_TO_TREE_WINDOW_Y(tree_view,y) ((y) - tree_view->priv->dy)
  71
  72 /* This is in bin_window coordinates */
  73 #define BACKGROUND_FIRST_PIXEL(tree_view,tree,node) (RBTREE_Y_TO_TREE_WINDOW_Y (tree_view, _gtk_rbtree_node_find_offset ((tree), (node))))
  74 #define CELL_FIRST_PIXEL(tree_view,tree,node,separator) (BACKGROUND_FIRST_PIXEL (tree_view,tree,node) + separator/2)
  75
  76 #define ROW_HEIGHT(tree_view,height) \
  77   ((height > 0) ? (height) : (tree_view)->priv->expander_size)
  78
  79
  80 typedef struct _GtkTreeViewChild GtkTreeViewChild;
  81 struct _GtkTreeViewChild
  82 {
  83   GtkWidget *widget;
  84   gint x;
  85   gint y;
  86   gint width;
  87   gint height;
  88 };
  89
  90
  91 typedef struct _TreeViewDragInfo TreeViewDragInfo;
  92 struct _TreeViewDragInfo
  93 {
  94   GdkModifierType start_button_mask;
  95   GtkTargetList *_unused_source_target_list;
  96   GdkDragAction source_actions;
  97
  98   GtkTargetList *_unused_dest_target_list;
  99
 100   guint source_set : 1;
 101   guint dest_set : 1;
 102 };
 103
 104
 105 /* Signals */
 106 enum
 107 {
 108   ROW_ACTIVATED,
 109   TEST_EXPAND_ROW,
 110   TEST_COLLAPSE_ROW,
 111   ROW_EXPANDED,
 112   ROW_COLLAPSED,
 113   COLUMNS_CHANGED,
 114   CURSOR_CHANGED,
 115   MOVE_CURSOR,
 116   SELECT_ALL,
 117   UNSELECT_ALL,
 118   SELECT_CURSOR_ROW,
 119   TOGGLE_CURSOR_ROW,
 120   EXPAND_COLLAPSE_CURSOR_ROW,
 121   SELECT_CURSOR_PARENT,
 122   START_INTERACTIVE_SEARCH,
 123   LAST_SIGNAL
 124 };
 125
 126 /* Properties */
 127 enum {
 128   PROP_0,
 129   PROP_MODEL,
 130   PROP_HADJUSTMENT,
 131   PROP_VADJUSTMENT,
 132   PROP_HEADERS_VISIBLE,
 133   PROP_HEADERS_CLICKABLE,
 134   PROP_EXPANDER_COLUMN,
 135   PROP_REORDERABLE,
 136   PROP_RULES_HINT,
 137   PROP_ENABLE_SEARCH,
 138   PROP_SEARCH_COLUMN,
 139   PROP_FIXED_HEIGHT_MODE,
 140   PROP_HOVER_SELECTION,
 141   PROP_HOVER_EXPAND,
 142   PROP_SHOW_EXPANDERS,
 143   PROP_LEVEL_INDENTATION,
 144   PROP_RUBBER_BANDING,
 145   PROP_ENABLE_GRID_LINES,
 146   PROP_ENABLE_TREE_LINES,
 147   PROP_TOOLTIP_COLUMN
 148 };
 149
 150 /* object signals */
 151 static void     gtk_tree_view_finalize             (GObject          *object);
 152 static void     gtk_tree_view_set_property         (GObject         *object,
 153                                                     guint            prop_id,
 154                                                     const GValue    *value,
 155                                                     GParamSpec      *pspec);
 156 static void     gtk_tree_view_get_property         (GObject         *object,
 157                                                     guint            prop_id,
 158                                                     GValue          *value,
 159                                                     GParamSpec      *pspec);
 160
 161 /* gtkobject signals */
 162 static void     gtk_tree_view_destroy              (GtkObject        *object);
 163
 164 /* gtkwidget signals */
 165 static void     gtk_tree_view_realize              (GtkWidget        *widget);
 166 static void     gtk_tree_view_unrealize            (GtkWidget        *widget);
 167 static void     gtk_tree_view_map                  (GtkWidget        *widget);
 168 static void     gtk_tree_view_size_request         (GtkWidget        *widget,
 169                                                     GtkRequisition   *requisition);
 170 static void     gtk_tree_view_size_allocate        (GtkWidget        *widget,
 171                                                     GtkAllocation    *allocation);
 172 static gboolean gtk_tree_view_expose               (GtkWidget        *widget,
 173                                                     GdkEventExpose   *event);
 174 static gboolean gtk_tree_view_key_press            (GtkWidget        *widget,
 175                                                     GdkEventKey      *event);
 176 static gboolean gtk_tree_view_key_release          (GtkWidget        *widget,
 177                                                     GdkEventKey      *event);
 178 static gboolean gtk_tree_view_motion               (GtkWidget        *widget,
 179                                                     GdkEventMotion   *event);
 180 static gboolean gtk_tree_view_enter_notify         (GtkWidget        *widget,
 181                                                     GdkEventCrossing *event);
 182 static gboolean gtk_tree_view_leave_notify         (GtkWidget        *widget,
 183                                                     GdkEventCrossing *event);
 184 static gboolean gtk_tree_view_button_press         (GtkWidget        *widget,
 185                                                     GdkEventButton   *event);
 186 static gboolean gtk_tree_view_button_release       (GtkWidget        *widget,
 187                                                     GdkEventButton   *event);
 188 static gboolean gtk_tree_view_grab_broken          (GtkWidget          *widget,
 189                                                     GdkEventGrabBroken *event);
 190 #if 0
 191 static gboolean gtk_tree_view_configure            (GtkWidget         *widget,
 192                                                     GdkEventConfigure *event);
 193 #endif
 194
 195 static void     gtk_tree_view_set_focus_child      (GtkContainer     *container,
 196                                                     GtkWidget        *child);
 197 static gint     gtk_tree_view_focus_out            (GtkWidget        *widget,
 198                                                     GdkEventFocus    *event);
 199 static gint     gtk_tree_view_focus                (GtkWidget        *widget,
 200                                                     GtkDirectionType  direction);
 201 static void     gtk_tree_view_grab_focus           (GtkWidget        *widget);
 202 static void     gtk_tree_view_style_set            (GtkWidget        *widget,
 203                                                     GtkStyle         *previous_style);
 204 static void     gtk_tree_view_grab_notify          (GtkWidget        *widget,
 205                                                     gboolean          was_grabbed);
 206 static void     gtk_tree_view_state_changed        (GtkWidget        *widget,
 207                                                     GtkStateType      previous_state);
 208
 209 /* container signals */
 210 static void     gtk_tree_view_remove               (GtkContainer     *container,
 211                                                     GtkWidget        *widget);
 212 static void     gtk_tree_view_forall               (GtkContainer     *container,
 213                                                     gboolean          include_internals,
 214                                                     GtkCallback       callback,
 215                                                     gpointer          callback_data);
 216
 217 /* Source side drag signals */
 218 static void gtk_tree_view_drag_begin       (GtkWidget        *widget,
 219                                             GdkDragContext   *context);
 220 static void gtk_tree_view_drag_end         (GtkWidget        *widget,
 221                                             GdkDragContext   *context);
 222 static void gtk_tree_view_drag_data_get    (GtkWidget        *widget,
 223                                             GdkDragContext   *context,
 224                                             GtkSelectionData *selection_data,
 225                                             guint             info,
 226                                             guint             time);
 227 static void gtk_tree_view_drag_data_delete (GtkWidget        *widget,
 228                                             GdkDragContext   *context);
 229
 230 /* Target side drag signals */
 231 static void     gtk_tree_view_drag_leave         (GtkWidget        *widget,
 232                                                   GdkDragContext   *context,
 233                                                   guint             time);
 234 static gboolean gtk_tree_view_drag_motion        (GtkWidget        *widget,
 235                                                   GdkDragContext   *context,
 236                                                   gint              x,
 237                                                   gint              y,
 238                                                   guint             time);
 239 static gboolean gtk_tree_view_drag_drop          (GtkWidget        *widget,
 240                                                   GdkDragContext   *context,
 241                                                   gint              x,
 242                                                   gint              y,
 243                                                   guint             time);
 244 static void     gtk_tree_view_drag_data_received (GtkWidget        *widget,
 245                                                   GdkDragContext   *context,
 246                                                   gint              x,
 247                                                   gint              y,
 248                                                   GtkSelectionData *selection_data,
 249                                                   guint             info,
 250                                                   guint             time);
 251
 252 /* tree_model signals */
 253 static void gtk_tree_view_set_adjustments                 (GtkTreeView     *tree_view,
 254                                                            GtkAdjustment   *hadj,
 255                                                            GtkAdjustment   *vadj);
 256 static gboolean gtk_tree_view_real_move_cursor            (GtkTreeView     *tree_view,
 257                                                            GtkMovementStep  step,
 258                                                            gint             count);
 259 static gboolean gtk_tree_view_real_select_all             (GtkTreeView     *tree_view);
 260 static gboolean gtk_tree_view_real_unselect_all           (GtkTreeView     *tree_view);
 261 static gboolean gtk_tree_view_real_select_cursor_row      (GtkTreeView     *tree_view,
 262                                                            gboolean         start_editing);
 263 static gboolean gtk_tree_view_real_toggle_cursor_row      (GtkTreeView     *tree_view);
 264 static gboolean gtk_tree_view_real_expand_collapse_cursor_row (GtkTreeView     *tree_view,
 265                                                                gboolean         logical,
 266                                                                gboolean         expand,
 267                                                                gboolean         open_all);
 268 static gboolean gtk_tree_view_real_select_cursor_parent   (GtkTreeView     *tree_view);
 269 static void gtk_tree_view_row_changed                     (GtkTreeModel    *model,
 270                                                            GtkTreePath     *path,
 271                                                            GtkTreeIter     *iter,
 272                                                            gpointer         data);
 273 static void gtk_tree_view_row_inserted                    (GtkTreeModel    *model,
 274                                                            GtkTreePath     *path,
 275                                                            GtkTreeIter     *iter,
 276                                                            gpointer         data);
 277 static void gtk_tree_view_row_has_child_toggled           (GtkTreeModel    *model,
 278                                                            GtkTreePath     *path,
 279                                                            GtkTreeIter     *iter,
 280                                                            gpointer         data);
 281 static void gtk_tree_view_row_deleted                     (GtkTreeModel    *model,
 282                                                            GtkTreePath     *path,
 283                                                            gpointer         data);
 284 static void gtk_tree_view_rows_reordered                  (GtkTreeModel    *model,
 285                                                            GtkTreePath     *parent,
 286                                                            GtkTreeIter     *iter,
 287                                                            gint            *new_order,
 288                                                            gpointer         data);
 289
 290 /* Incremental reflow */
 291 static gboolean validate_row             (GtkTreeView *tree_view,
 292                                           GtkRBTree   *tree,
 293                                           GtkRBNode   *node,
 294                                           GtkTreeIter *iter,
 295                                           GtkTreePath *path);
 296 static void     validate_visible_area    (GtkTreeView *tree_view);
 297 static gboolean validate_rows_handler    (GtkTreeView *tree_view);
 298 static gboolean do_validate_rows         (GtkTreeView *tree_view,
 299                                           gboolean     size_request);
 300 static gboolean validate_rows            (GtkTreeView *tree_view);
 301 static gboolean presize_handler_callback (gpointer     data);
 302 static void     install_presize_handler  (GtkTreeView *tree_view);
 303 static void     install_scroll_sync_handler (GtkTreeView *tree_view);
 304 static void     gtk_tree_view_set_top_row   (GtkTreeView *tree_view,
 305                                              GtkTreePath *path,
 306                                              gint         offset);
 307 static void     gtk_tree_view_dy_to_top_row (GtkTreeView *tree_view);
 308 static void     gtk_tree_view_top_row_to_dy (GtkTreeView *tree_view);
 309 static void     invalidate_empty_focus      (GtkTreeView *tree_view);
 310
 311 /* Internal functions */
 312 static gboolean gtk_tree_view_is_expander_column             (GtkTreeView        *tree_view,
 313                                                               GtkTreeViewColumn  *column);
 314 static void     gtk_tree_view_add_move_binding               (GtkBindingSet      *binding_set,
 315                                                               guint               keyval,
 316                                                               guint               modmask,
 317                                                               gboolean            add_shifted_binding,
 318                                                               GtkMovementStep     step,
 319                                                               gint                count);
 320 static gint     gtk_tree_view_unref_and_check_selection_tree (GtkTreeView        *tree_view,
 321                                                               GtkRBTree          *tree);
 322 static void     gtk_tree_view_queue_draw_path                (GtkTreeView        *tree_view,
 323                                                               GtkTreePath        *path,
 324                                                               const GdkRectangle *clip_rect);
 325 static void     gtk_tree_view_queue_draw_arrow               (GtkTreeView        *tree_view,
 326                                                               GtkRBTree          *tree,
 327                                                               GtkRBNode          *node,
 328                                                               const GdkRectangle *clip_rect);
 329 static void     gtk_tree_view_draw_arrow                     (GtkTreeView        *tree_view,
 330                                                               GtkRBTree          *tree,
 331                                                               GtkRBNode          *node,
 332                                                               gint                x,
 333                                                               gint                y);
 334 static void     gtk_tree_view_get_arrow_xrange               (GtkTreeView        *tree_view,
 335                                                               GtkRBTree          *tree,
 336                                                               gint               *x1,
 337                                                               gint               *x2);
 338 static gint     gtk_tree_view_new_column_width               (GtkTreeView        *tree_view,
 339                                                               gint                i,
 340                                                               gint               *x);
 341 static void     gtk_tree_view_adjustment_changed             (GtkAdjustment      *adjustment,
 342                                                               GtkTreeView        *tree_view);
 343 static void     gtk_tree_view_build_tree                     (GtkTreeView        *tree_view,
 344                                                               GtkRBTree          *tree,
 345                                                               GtkTreeIter        *iter,
 346                                                               gint                depth,
 347                                                               gboolean            recurse);
 348 static void     gtk_tree_view_clamp_node_visible             (GtkTreeView        *tree_view,
 349                                                               GtkRBTree          *tree,
 350                                                               GtkRBNode          *node);
 351 static void     gtk_tree_view_clamp_column_visible           (GtkTreeView        *tree_view,
 352                                                               GtkTreeViewColumn  *column,
 353                                                               gboolean            focus_to_cell);
 354 static gboolean gtk_tree_view_maybe_begin_dragging_row       (GtkTreeView        *tree_view,
 355                                                               GdkEventMotion     *event);
 356 static void     gtk_tree_view_focus_to_cursor                (GtkTreeView        *tree_view);
 357 static void     gtk_tree_view_move_cursor_up_down            (GtkTreeView        *tree_view,
 358                                                               gint                count);
 359 static void     gtk_tree_view_move_cursor_page_up_down       (GtkTreeView        *tree_view,
 360                                                               gint                count);
 361 static void     gtk_tree_view_move_cursor_left_right         (GtkTreeView        *tree_view,
 362                                                               gint                count);
 363 static void     gtk_tree_view_move_cursor_start_end          (GtkTreeView        *tree_view,
 364                                                               gint                count);
 365 static gboolean gtk_tree_view_real_collapse_row              (GtkTreeView        *tree_view,
 366                                                               GtkTreePath        *path,
 367                                                               GtkRBTree          *tree,
 368                                                               GtkRBNode          *node,
 369                                                               gboolean            animate);
 370 static gboolean gtk_tree_view_real_expand_row                (GtkTreeView        *tree_view,
 371                                                               GtkTreePath        *path,
 372                                                               GtkRBTree          *tree,
 373                                                               GtkRBNode          *node,
 374                                                               gboolean            open_all,
 375                                                               gboolean            animate);
 376 static void     gtk_tree_view_real_set_cursor                (GtkTreeView        *tree_view,
 377                                                               GtkTreePath        *path,
 378                                                               gboolean            clear_and_select,
 379                                                               gboolean            clamp_node);
 380 static gboolean gtk_tree_view_has_special_cell               (GtkTreeView        *tree_view);
 381 static void     column_sizing_notify                         (GObject            *object,
 382                                                               GParamSpec         *pspec,
 383                                                               gpointer            data);
 384 static gboolean expand_collapse_timeout                      (gpointer            data);
 385 static void     add_expand_collapse_timeout                  (GtkTreeView        *tree_view,
 386                                                               GtkRBTree          *tree,
 387                                                               GtkRBNode          *node,
 388                                                               gboolean            expand);
 389 static void     remove_expand_collapse_timeout               (GtkTreeView        *tree_view);
 390 static void     cancel_arrow_animation                       (GtkTreeView        *tree_view);
 391 static gboolean do_expand_collapse                           (GtkTreeView        *tree_view);
 392 static void     gtk_tree_view_stop_rubber_band               (GtkTreeView        *tree_view);
 393 static void     update_prelight                              (GtkTreeView        *tree_view,
 394                                                               int                 x,
 395                                                               int                 y);
 396
 397 /* interactive search */
 398 static void     gtk_tree_view_ensure_interactive_directory (GtkTreeView *tree_view);
 399 static void     gtk_tree_view_search_dialog_hide     (GtkWidget        *search_dialog,
 400                                                          GtkTreeView      *tree_view);
 401 static void     gtk_tree_view_search_position_func      (GtkTreeView      *tree_view,
 402                                                          GtkWidget        *search_dialog,
 403                                                          gpointer          user_data);
 404 static void     gtk_tree_view_search_disable_popdown    (GtkEntry         *entry,
 405                                                          GtkMenu          *menu,
 406                                                          gpointer          data);
 407 static void     gtk_tree_view_search_preedit_changed    (GtkIMContext     *im_context,
 408                                                          GtkTreeView      *tree_view);
 409 static void     gtk_tree_view_search_activate           (GtkEntry         *entry,
 410                                                          GtkTreeView      *tree_view);
 411 static gboolean gtk_tree_view_real_search_enable_popdown(gpointer          data);
 412 static void     gtk_tree_view_search_enable_popdown     (GtkWidget        *widget,
 413                                                          gpointer          data);
 414 static gboolean gtk_tree_view_search_delete_event       (GtkWidget        *widget,
 415                                                          GdkEventAny      *event,
 416                                                          GtkTreeView      *tree_view);
 417 static gboolean gtk_tree_view_search_button_press_event (GtkWidget        *widget,
 418                                                          GdkEventButton   *event,
 419                                                          GtkTreeView      *tree_view);
 420 static gboolean gtk_tree_view_search_scroll_event       (GtkWidget        *entry,
 421                                                          GdkEventScroll   *event,
 422                                                          GtkTreeView      *tree_view);
 423 static gboolean gtk_tree_view_search_key_press_event    (GtkWidget        *entry,
 424                                                          GdkEventKey      *event,
 425                                                          GtkTreeView      *tree_view);
 426 static gboolean gtk_tree_view_search_move               (GtkWidget        *window,
 427                                                          GtkTreeView      *tree_view,
 428                                                          gboolean          up);
 429 static gboolean gtk_tree_view_search_equal_func         (GtkTreeModel     *model,
 430                                                          gint              column,
 431                                                          const gchar      *key,
 432                                                          GtkTreeIter      *iter,
 433                                                          gpointer          search_data);
 434 static gboolean gtk_tree_view_search_iter               (GtkTreeModel     *model,
 435                                                          GtkTreeSelection *selection,
 436                                                          GtkTreeIter      *iter,
 437                                                          const gchar      *text,
 438                                                          gint             *count,
 439                                                          gint              n);
 440 static void     gtk_tree_view_search_init               (GtkWidget        *entry,
 441                                                          GtkTreeView      *tree_view);
 442 static void     gtk_tree_view_put                       (GtkTreeView      *tree_view,
 443                                                          GtkWidget        *child_widget,
 444                                                          gint              x,
 445                                                          gint              y,
 446                                                          gint              width,
 447                                                          gint              height);
 448 static gboolean gtk_tree_view_start_editing             (GtkTreeView      *tree_view,
 449                                                          GtkTreePath      *cursor_path);
 450 static void gtk_tree_view_real_start_editing (GtkTreeView       *tree_view,
 451                                               GtkTreeViewColumn *column,
 452                                               GtkTreePath       *path,
 453                                               GtkCellEditable   *cell_editable,
 454                                               GdkRectangle      *cell_area,
 455                                               GdkEvent          *event,
 456                                               guint              flags);
 457 static void gtk_tree_view_stop_editing                  (GtkTreeView *tree_view,
 458                                                          gboolean     cancel_editing);
 459 static gboolean gtk_tree_view_real_start_interactive_search (GtkTreeView *tree_view,
 460                                                              gboolean     keybinding);
 461 static gboolean gtk_tree_view_start_interactive_search      (GtkTreeView *tree_view);
 462 static GtkTreeViewColumn *gtk_tree_view_get_drop_column (GtkTreeView       *tree_view,
 463                                                          GtkTreeViewColumn *column,
 464                                                          gint               drop_position);
 465
 466 /* GtkBuildable */
 467 static void gtk_tree_view_buildable_add_child (GtkBuildable *tree_view,
 468                                                GtkBuilder  *builder,
 469                                                GObject     *child,
 470                                                const gchar *type);
 471 static void gtk_tree_view_buildable_init      (GtkBuildableIface *iface);
 472
 473
 474 static gboolean scroll_row_timeout                   (gpointer     data);
 475 static void     add_scroll_timeout                   (GtkTreeView *tree_view);
 476 static void     remove_scroll_timeout                (GtkTreeView *tree_view);
 477
 478 static guint tree_view_signals [LAST_SIGNAL] = { 0 };
 479
 480 \f
 481
 482 /* GType Methods
 483  */
 484
 485 G_DEFINE_TYPE_WITH_CODE (GtkTreeView, gtk_tree_view, GTK_TYPE_CONTAINER,
 486                          G_IMPLEMENT_INTERFACE (GTK_TYPE_BUILDABLE,
 487                                                 gtk_tree_view_buildable_init))
 488
 489 static void
 490 gtk_tree_view_class_init (GtkTreeViewClass *class)
 491 {
 492   GObjectClass *o_class;
 493   GtkObjectClass *object_class;
 494   GtkWidgetClass *widget_class;
 495   GtkContainerClass *container_class;
 496   GtkBindingSet *binding_set;
 497
 498   binding_set = gtk_binding_set_by_class (class);
 499
 500   o_class = (GObjectClass *) class;
 501   object_class = (GtkObjectClass *) class;
 502   widget_class = (GtkWidgetClass *) class;
 503   container_class = (GtkContainerClass *) class;
 504
 505   /* GObject signals */
 506   o_class->set_property = gtk_tree_view_set_property;
 507   o_class->get_property = gtk_tree_view_get_property;
 508   o_class->finalize = gtk_tree_view_finalize;
 509
 510   /* GtkObject signals */
 511   object_class->destroy = gtk_tree_view_destroy;
 512
 513   /* GtkWidget signals */
 514   widget_class->map = gtk_tree_view_map;
 515   widget_class->realize = gtk_tree_view_realize;
 516   widget_class->unrealize = gtk_tree_view_unrealize;
 517   widget_class->size_request = gtk_tree_view_size_request;
 518   widget_class->size_allocate = gtk_tree_view_size_allocate;
 519   widget_class->button_press_event = gtk_tree_view_button_press;
 520   widget_class->button_release_event = gtk_tree_view_button_release;
 521   widget_class->grab_broken_event = gtk_tree_view_grab_broken;
 522   /*widget_class->configure_event = gtk_tree_view_configure;*/
 523   widget_class->motion_notify_event = gtk_tree_view_motion;
 524   widget_class->expose_event = gtk_tree_view_expose;
 525   widget_class->key_press_event = gtk_tree_view_key_press;
 526   widget_class->key_release_event = gtk_tree_view_key_release;
 527   widget_class->enter_notify_event = gtk_tree_view_enter_notify;
 528   widget_class->leave_notify_event = gtk_tree_view_leave_notify;
 529   widget_class->focus_out_event = gtk_tree_view_focus_out;
 530   widget_class->drag_begin = gtk_tree_view_drag_begin;
 531   widget_class->drag_end = gtk_tree_view_drag_end;
 532   widget_class->drag_data_get = gtk_tree_view_drag_data_get;
 533   widget_class->drag_data_delete = gtk_tree_view_drag_data_delete;
 534   widget_class->drag_leave = gtk_tree_view_drag_leave;
 535   widget_class->drag_motion = gtk_tree_view_drag_motion;
 536   widget_class->drag_drop = gtk_tree_view_drag_drop;
 537   widget_class->drag_data_received = gtk_tree_view_drag_data_received;
 538   widget_class->focus = gtk_tree_view_focus;
 539   widget_class->grab_focus = gtk_tree_view_grab_focus;
 540   widget_class->style_set = gtk_tree_view_style_set;
 541   widget_class->grab_notify = gtk_tree_view_grab_notify;
 542   widget_class->state_changed = gtk_tree_view_state_changed;
 543
 544   /* GtkContainer signals */
 545   container_class->remove = gtk_tree_view_remove;
 546   container_class->forall = gtk_tree_view_forall;
 547   container_class->set_focus_child = gtk_tree_view_set_focus_child;
 548
 549   class->set_scroll_adjustments = gtk_tree_view_set_adjustments;
 550   class->move_cursor = gtk_tree_view_real_move_cursor;
 551   class->select_all = gtk_tree_view_real_select_all;
 552   class->unselect_all = gtk_tree_view_real_unselect_all;
 553   class->select_cursor_row = gtk_tree_view_real_select_cursor_row;
 554   class->toggle_cursor_row = gtk_tree_view_real_toggle_cursor_row;
 555   class->expand_collapse_cursor_row = gtk_tree_view_real_expand_collapse_cursor_row;
 556   class->select_cursor_parent = gtk_tree_view_real_select_cursor_parent;
 557   class->start_interactive_search = gtk_tree_view_start_interactive_search;
 558
 559   /* Properties */
 560
 561   g_object_class_install_property (o_class,
 562                                    PROP_MODEL,
 563                                    g_param_spec_object ("model",
 564                                                         P_("TreeView Model"),
 565                                                         P_("The model for the tree view"),
 566                                                         GTK_TYPE_TREE_MODEL,
 567                                                         GTK_PARAM_READWRITE));
 568
 569   g_object_class_install_property (o_class,
 570                                    PROP_HADJUSTMENT,
 571                                    g_param_spec_object ("hadjustment",
 572                                                         P_("Horizontal Adjustment"),
 573                                                         P_("Horizontal Adjustment for the widget"),
 574                                                         GTK_TYPE_ADJUSTMENT,
 575                                                         GTK_PARAM_READWRITE));
 576
 577   g_object_class_install_property (o_class,
 578                                    PROP_VADJUSTMENT,
 579                                    g_param_spec_object ("vadjustment",
 580                                                         P_("Vertical Adjustment"),
 581                                                         P_("Vertical Adjustment for the widget"),
 582                                                         GTK_TYPE_ADJUSTMENT,
 583                                                         GTK_PARAM_READWRITE));
 584
 585   g_object_class_install_property (o_class,
 586                                    PROP_HEADERS_VISIBLE,
 587                                    g_param_spec_boolean ("headers-visible",
 588                                                          P_("Headers Visible"),
 589                                                          P_("Show the column header buttons"),
 590                                                          TRUE,
 591                                                          GTK_PARAM_READWRITE));
 592
 593   g_object_class_install_property (o_class,
 594                                    PROP_HEADERS_CLICKABLE,
 595                                    g_param_spec_boolean ("headers-clickable",
 596                                                          P_("Headers Clickable"),
 597                                                          P_("Column headers respond to click events"),
 598                                                          TRUE,
 599                                                          GTK_PARAM_READWRITE));
 600
 601   g_object_class_install_property (o_class,
 602                                    PROP_EXPANDER_COLUMN,
 603                                    g_param_spec_object ("expander-column",
 604                                                         P_("Expander Column"),
 605                                                         P_("Set the column for the expander column"),
 606                                                         GTK_TYPE_TREE_VIEW_COLUMN,
 607                                                         GTK_PARAM_READWRITE));
 608
 609   g_object_class_install_property (o_class,
 610                                    PROP_REORDERABLE,
 611                                    g_param_spec_boolean ("reorderable",
 612                                                          P_("Reorderable"),
 613                                                          P_("View is reorderable"),
 614                                                          FALSE,
 615                                                          GTK_PARAM_READWRITE));
 616
 617   g_object_class_install_property (o_class,
 618                                    PROP_RULES_HINT,
 619                                    g_param_spec_boolean ("rules-hint",
 620                                                          P_("Rules Hint"),
 621                                                          P_("Set a hint to the theme engine to draw rows in alternating colors"),
 622                                                          FALSE,
 623                                                          GTK_PARAM_READWRITE));
 624
 625     g_object_class_install_property (o_class,
 626                                      PROP_ENABLE_SEARCH,
 627                                      g_param_spec_boolean ("enable-search",
 628                                                            P_("Enable Search"),
 629                                                            P_("View allows user to search through columns interactively"),
 630                                                            TRUE,
 631                                                            GTK_PARAM_READWRITE));
 632
 633     g_object_class_install_property (o_class,
 634                                      PROP_SEARCH_COLUMN,
 635                                      g_param_spec_int ("search-column",
 636                                                        P_("Search Column"),
 637                                                        P_("Model column to search through during interactive search"),
 638                                                        -1,
 639                                                        G_MAXINT,
 640                                                        -1,
 641                                                        GTK_PARAM_READWRITE));
 642
 643     /**
 644      * GtkTreeView:fixed-height-mode:
 645      *
 646      * Setting the ::fixed-height-mode property to %TRUE speeds up
 647      * #GtkTreeView by assuming that all rows have the same height.
 648      * Only enable this option if all rows are the same height.
 649      * Please see gtk_tree_view_set_fixed_height_mode() for more
 650      * information on this option.
 651      *
 652      * Since: 2.4
 653      **/
 654     g_object_class_install_property (o_class,
 655                                      PROP_FIXED_HEIGHT_MODE,
 656                                      g_param_spec_boolean ("fixed-height-mode",
 657                                                            P_("Fixed Height Mode"),
 658                                                            P_("Speeds up GtkTreeView by assuming that all rows have the same height"),
 659                                                            FALSE,
 660                                                            GTK_PARAM_READWRITE));
 661
 662     /**
 663      * GtkTreeView:hover-selection:
 664      *
 665      * Enables of disables the hover selection mode of @tree_view.
 666      * Hover selection makes the selected row follow the pointer.
 667      * Currently, this works only for the selection modes
 668      * %GTK_SELECTION_SINGLE and %GTK_SELECTION_BROWSE.
 669      *
 670      * This mode is primarily intended for treeviews in popups, e.g.
 671      * in #GtkComboBox or #GtkEntryCompletion.
 672      *
 673      * Since: 2.6
 674      */
 675     g_object_class_install_property (o_class,
 676                                      PROP_HOVER_SELECTION,
 677                                      g_param_spec_boolean ("hover-selection",
 678                                                            P_("Hover Selection"),
 679                                                            P_("Whether the selection should follow the pointer"),
 680                                                            FALSE,
 681                                                            GTK_PARAM_READWRITE));
 682
 683     /**
 684      * GtkTreeView:hover-expand:
 685      *
 686      * Enables of disables the hover expansion mode of @tree_view.
 687      * Hover expansion makes rows expand or collapse if the pointer moves
 688      * over them.
 689      *
 690      * This mode is primarily intended for treeviews in popups, e.g.
 691      * in #GtkComboBox or #GtkEntryCompletion.
 692      *
 693      * Since: 2.6
 694      */
 695     g_object_class_install_property (o_class,
 696                                      PROP_HOVER_EXPAND,
 697                                      g_param_spec_boolean ("hover-expand",
 698                                                            P_("Hover Expand"),
 699                                                            P_("Whether rows should be expanded/collapsed when the pointer moves over them"),
 700                                                            FALSE,
 701                                                            GTK_PARAM_READWRITE));
 702
 703     /**
 704      * GtkTreeView:show-expanders:
 705      *
 706      * %TRUE if the view has expanders.
 707      *
 708      * Since: 2.12
 709      */
 710     g_object_class_install_property (o_class,
 711                                      PROP_SHOW_EXPANDERS,
 712                                      g_param_spec_boolean ("show-expanders",
 713                                                            P_("Show Expanders"),
 714                                                            P_("View has expanders"),
 715                                                            TRUE,
 716                                                            GTK_PARAM_READWRITE));
 717
 718     /**
 719      * GtkTreeView:level-indentation:
 720      *
 721      * Extra indentation for each level.
 722      *
 723      * Since: 2.12
 724      */
 725     g_object_class_install_property (o_class,
 726                                      PROP_LEVEL_INDENTATION,
 727                                      g_param_spec_int ("level-indentation",
 728                                                        P_("Level Indentation"),
 729                                                        P_("Extra indentation for each level"),
 730                                                        0,
 731                                                        G_MAXINT,
 732                                                        0,
 733                                                        GTK_PARAM_READWRITE));
 734
 735     g_object_class_install_property (o_class,
 736                                      PROP_RUBBER_BANDING,
 737                                      g_param_spec_boolean ("rubber-banding",
 738                                                            P_("Rubber Banding"),
 739                                                            P_("Whether to enable selection of multiple items by dragging the mouse pointer"),
 740                                                            FALSE,
 741                                                            GTK_PARAM_READWRITE));
 742
 743     g_object_class_install_property (o_class,
 744                                      PROP_ENABLE_GRID_LINES,
 745                                      g_param_spec_enum ("enable-grid-lines",
 746                                                         P_("Enable Grid Lines"),
 747                                                         P_("Whether grid lines should be drawn in the tree view"),
 748                                                         GTK_TYPE_TREE_VIEW_GRID_LINES,
 749                                                         GTK_TREE_VIEW_GRID_LINES_NONE,
 750                                                         GTK_PARAM_READWRITE));
 751
 752     g_object_class_install_property (o_class,
 753                                      PROP_ENABLE_TREE_LINES,
 754                                      g_param_spec_boolean ("enable-tree-lines",
 755                                                            P_("Enable Tree Lines"),
 756                                                            P_("Whether tree lines should be drawn in the tree view"),
 757                                                            FALSE,
 758                                                            GTK_PARAM_READWRITE));
 759
 760     g_object_class_install_property (o_class,
 761                                      PROP_TOOLTIP_COLUMN,
 762                                      g_param_spec_int ("tooltip-column",
 763                                                        P_("Tooltip Column"),
 764                                                        P_("The column in the model containing the tooltip texts for the rows"),
 765                                                        -1,
 766                                                        G_MAXINT,
 767                                                        -1,
 768                                                        GTK_PARAM_READWRITE));
 769
 770   /* Style properties */
 771 #define _TREE_VIEW_EXPANDER_SIZE 12
 772 #define _TREE_VIEW_VERTICAL_SEPARATOR 2
 773 #define _TREE_VIEW_HORIZONTAL_SEPARATOR 2
 774
 775   gtk_widget_class_install_style_property (widget_class,
 776                                            g_param_spec_int ("expander-size",
 777                                                              P_("Expander Size"),
 778                                                              P_("Size of the expander arrow"),
 779                                                              0,
 780                                                              G_MAXINT,
 781                                                              _TREE_VIEW_EXPANDER_SIZE,
 782                                                              GTK_PARAM_READABLE));
 783
 784   gtk_widget_class_install_style_property (widget_class,
 785                                            g_param_spec_int ("vertical-separator",
 786                                                              P_("Vertical Separator Width"),
 787                                                              P_("Vertical space between cells.  Must be an even number"),
 788                                                              0,
 789                                                              G_MAXINT,
 790                                                              _TREE_VIEW_VERTICAL_SEPARATOR,
 791                                                              GTK_PARAM_READABLE));
 792
 793   gtk_widget_class_install_style_property (widget_class,
 794                                            g_param_spec_int ("horizontal-separator",
 795                                                              P_("Horizontal Separator Width"),
 796                                                              P_("Horizontal space between cells.  Must be an even number"),
 797                                                              0,
 798                                                              G_MAXINT,
 799                                                              _TREE_VIEW_HORIZONTAL_SEPARATOR,
 800                                                              GTK_PARAM_READABLE));
 801
 802   gtk_widget_class_install_style_property (widget_class,
 803                                            g_param_spec_boolean ("allow-rules",
 804                                                                  P_("Allow Rules"),
 805                                                                  P_("Allow drawing of alternating color rows"),
 806                                                                  TRUE,
 807                                                                  GTK_PARAM_READABLE));
 808
 809   gtk_widget_class_install_style_property (widget_class,
 810                                            g_param_spec_boolean ("indent-expanders",
 811                                                                  P_("Indent Expanders"),
 812                                                                  P_("Make the expanders indented"),
 813                                                                  TRUE,
 814                                                                  GTK_PARAM_READABLE));
 815
 816   gtk_widget_class_install_style_property (widget_class,
 817                                            g_param_spec_boxed ("even-row-color",
 818                                                                P_("Even Row Color"),
 819                                                                P_("Color to use for even rows"),
 820                                                                GDK_TYPE_COLOR,
 821                                                                GTK_PARAM_READABLE));
 822
 823   gtk_widget_class_install_style_property (widget_class,
 824                                            g_param_spec_boxed ("odd-row-color",
 825                                                                P_("Odd Row Color"),
 826                                                                P_("Color to use for odd rows"),
 827                                                                GDK_TYPE_COLOR,
 828                                                                GTK_PARAM_READABLE));
 829
 830   gtk_widget_class_install_style_property (widget_class,
 831                                            g_param_spec_boolean ("row-ending-details",
 832                                                                  P_("Row Ending details"),
 833                                                                  P_("Enable extended row background theming"),
 834                                                                  FALSE,
 835                                                                  GTK_PARAM_READABLE));
 836
 837   gtk_widget_class_install_style_property (widget_class,
 838                                            g_param_spec_int ("grid-line-width",
 839                                                              P_("Grid line width"),
 840                                                              P_("Width, in pixels, of the tree view grid lines"),
 841                                                              0, G_MAXINT, 1,
 842                                                              GTK_PARAM_READABLE));
 843
 844   gtk_widget_class_install_style_property (widget_class,
 845                                            g_param_spec_int ("tree-line-width",
 846                                                              P_("Tree line width"),
 847                                                              P_("Width, in pixels, of the tree view lines"),
 848                                                              0, G_MAXINT, 1,
 849                                                              GTK_PARAM_READABLE));
 850
 851   gtk_widget_class_install_style_property (widget_class,
 852                                            g_param_spec_string ("grid-line-pattern",
 853                                                                 P_("Grid line pattern"),
 854                                                                 P_("Dash pattern used to draw the tree view grid lines"),
 855                                                                 "\1\1",
 856                                                                 GTK_PARAM_READABLE));
 857
 858   gtk_widget_class_install_style_property (widget_class,
 859                                            g_param_spec_string ("tree-line-pattern",
 860                                                                 P_("Tree line pattern"),
 861                                                                 P_("Dash pattern used to draw the tree view lines"),
 862                                                                 "\1\1",
 863                                                                 GTK_PARAM_READABLE));
 864
 865   /* Signals */
 866   /**
 867    * GtkTreeView::set-scroll-adjustments
 868    * @horizontal: the horizontal #GtkAdjustment
 869    * @vertical: the vertical #GtkAdjustment
 870    *
 871    * Set the scroll adjustments for the tree view. Usually scrolled containers
 872    * like #GtkScrolledWindow will emit this signal to connect two instances
 873    * of #GtkScrollbar to the scroll directions of the #GtkTreeView.
 874    */
 875   widget_class->set_scroll_adjustments_signal =
 876     g_signal_new (I_("set-scroll-adjustments"),
 877                   G_TYPE_FROM_CLASS (o_class),
 878                   G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
 879                   G_STRUCT_OFFSET (GtkTreeViewClass, set_scroll_adjustments),
 880                   NULL, NULL,
 881                   _gtk_marshal_VOID__OBJECT_OBJECT,
 882                   G_TYPE_NONE, 2,
 883                   GTK_TYPE_ADJUSTMENT,
 884                   GTK_TYPE_ADJUSTMENT);
 885
 886   /**
 887    * GtkTreeView::row-activated:
 888    * @tree_view: the object on which the signal is emitted
 889    * @path: the #GtkTreePath for the activated row
 890    * @column: the #GtkTreeViewColumn in which the activation occurred
 891    *
 892    * The "row-activated" signal is emitted when the method
 893    * gtk_tree_view_row_activated() is called or the user double clicks
 894    * a treeview row. It is also emitted when a non-editable row is
 895    * selected and one of the keys: Space, Shift+Space, Return or
 896    * Enter is pressed.
 897    *
 898    * For selection handling refer to the <link linkend="TreeWidget">tree
 899    * widget conceptual overview</link> as well as #GtkTreeSelection.
 900    */
 901   tree_view_signals[ROW_ACTIVATED] =
 902     g_signal_new (I_("row-activated"),
 903                   G_TYPE_FROM_CLASS (o_class),
 904                   G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
 905                   G_STRUCT_OFFSET (GtkTreeViewClass, row_activated),
 906                   NULL, NULL,
 907                   _gtk_marshal_VOID__BOXED_OBJECT,
 908                   G_TYPE_NONE, 2,
 909                   GTK_TYPE_TREE_PATH,
 910                   GTK_TYPE_TREE_VIEW_COLUMN);
 911
 912   /**
 913    * GtkTreeView::test-expand-row:
 914    * @tree_view: the object on which the signal is emitted
 915    * @iter: the tree iter of the row to expand
 916    * @path: a tree path that points to the row
 917    *
 918    * The given row is about to be expanded (show its children nodes). Use this
 919    * signal if you need to control the expandability of individual rows.
 920    *
 921    * Returns: %FALSE to allow expansion, %TRUE to reject
 922    */
 923   tree_view_signals[TEST_EXPAND_ROW] =
 924     g_signal_new (I_("test-expand-row"),
 925                   G_TYPE_FROM_CLASS (o_class),
 926                   G_SIGNAL_RUN_LAST,
 927                   G_STRUCT_OFFSET (GtkTreeViewClass, test_expand_row),
 928                   _gtk_boolean_handled_accumulator, NULL,
 929                   _gtk_marshal_BOOLEAN__BOXED_BOXED,
 930                   G_TYPE_BOOLEAN, 2,
 931                   GTK_TYPE_TREE_ITER,
 932                   GTK_TYPE_TREE_PATH);
 933
 934   /**
 935    * GtkTreeView::test-collapse-row:
 936    * @tree_view: the object on which the signal is emitted
 937    * @iter: the tree iter of the row to collapse
 938    * @path: a tree path that points to the row
 939    *
 940    * The given row is about to be collapsed (hide its children nodes). Use this
 941    * signal if you need to control the collapsibility of individual rows.
 942    *
 943    * Returns: %FALSE to allow collapsing, %TRUE to reject
 944    */
 945   tree_view_signals[TEST_COLLAPSE_ROW] =
 946     g_signal_new (I_("test-collapse-row"),
 947                   G_TYPE_FROM_CLASS (o_class),
 948                   G_SIGNAL_RUN_LAST,
 949                   G_STRUCT_OFFSET (GtkTreeViewClass, test_collapse_row),
 950                   _gtk_boolean_handled_accumulator, NULL,
 951                   _gtk_marshal_BOOLEAN__BOXED_BOXED,
 952                   G_TYPE_BOOLEAN, 2,
 953                   GTK_TYPE_TREE_ITER,
 954                   GTK_TYPE_TREE_PATH);
 955
 956   /**
 957    * GtkTreeView::row-expanded:
 958    * @tree_view: the object on which the signal is emitted
 959    * @iter: the tree iter of the expanded row
 960    * @path: a tree path that points to the row
 961    *
 962    * The given row has been expanded (child nodes are shown).
 963    */
 964   tree_view_signals[ROW_EXPANDED] =
 965     g_signal_new (I_("row-expanded"),
 966                   G_TYPE_FROM_CLASS (o_class),
 967                   G_SIGNAL_RUN_LAST,
 968                   G_STRUCT_OFFSET (GtkTreeViewClass, row_expanded),
 969                   NULL, NULL,
 970                   _gtk_marshal_VOID__BOXED_BOXED,
 971                   G_TYPE_NONE, 2,
 972                   GTK_TYPE_TREE_ITER,
 973                   GTK_TYPE_TREE_PATH);
 974
 975   /**
 976    * GtkTreeView::row-collapsed:
 977    * @tree_view: the object on which the signal is emitted
 978    * @iter: the tree iter of the collapsed row
 979    * @path: a tree path that points to the row
 980    *
 981    * The given row has been collapsed (child nodes are hidden).
 982    */
 983   tree_view_signals[ROW_COLLAPSED] =
 984     g_signal_new (I_("row-collapsed"),
 985                   G_TYPE_FROM_CLASS (o_class),
 986                   G_SIGNAL_RUN_LAST,
 987                   G_STRUCT_OFFSET (GtkTreeViewClass, row_collapsed),
 988                   NULL, NULL,
 989                   _gtk_marshal_VOID__BOXED_BOXED,
 990                   G_TYPE_NONE, 2,
 991                   GTK_TYPE_TREE_ITER,
 992                   GTK_TYPE_TREE_PATH);
 993
 994   /**
 995    * GtkTreeView::columns-changed:
 996    * @tree_view: the object on which the signal is emitted
 997    *
 998    * The number of columns of the treeview has changed.
 999    */
1000   tree_view_signals[COLUMNS_CHANGED] =
1001     g_signal_new (I_("columns-changed"),
1002                   G_TYPE_FROM_CLASS (o_class),
1003                   G_SIGNAL_RUN_LAST,
1004                   G_STRUCT_OFFSET (GtkTreeViewClass, columns_changed),
1005                   NULL, NULL,
1006                   _gtk_marshal_VOID__VOID,
1007                   G_TYPE_NONE, 0);
1008
1009   /**
1010    * GtkTreeView::cursor-changed:
1011    * @tree_view: the object on which the signal is emitted
1012    *
1013    * The position of the cursor (focused cell) has changed.
1014    */
1015   tree_view_signals[CURSOR_CHANGED] =
1016     g_signal_new (I_("cursor-changed"),
1017                   G_TYPE_FROM_CLASS (o_class),
1018                   G_SIGNAL_RUN_LAST,
1019                   G_STRUCT_OFFSET (GtkTreeViewClass, cursor_changed),
1020                   NULL, NULL,
1021                   _gtk_marshal_VOID__VOID,
1022                   G_TYPE_NONE, 0);
1023
1024   tree_view_signals[MOVE_CURSOR] =
1025     g_signal_new (I_("move-cursor"),
1026                   G_TYPE_FROM_CLASS (object_class),
1027                   G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
1028                   G_STRUCT_OFFSET (GtkTreeViewClass, move_cursor),
1029                   NULL, NULL,
1030                   _gtk_marshal_BOOLEAN__ENUM_INT,
1031                   G_TYPE_BOOLEAN, 2,
1032                   GTK_TYPE_MOVEMENT_STEP,
1033                   G_TYPE_INT);
1034
1035   tree_view_signals[SELECT_ALL] =
1036     g_signal_new (I_("select-all"),
1037                   G_TYPE_FROM_CLASS (object_class),
1038                   G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
1039                   G_STRUCT_OFFSET (GtkTreeViewClass, select_all),
1040                   NULL, NULL,
1041                   _gtk_marshal_BOOLEAN__VOID,
1042                   G_TYPE_BOOLEAN, 0);
1043
1044   tree_view_signals[UNSELECT_ALL] =
1045     g_signal_new (I_("unselect-all"),
1046                   G_TYPE_FROM_CLASS (object_class),
1047                   G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
1048                   G_STRUCT_OFFSET (GtkTreeViewClass, unselect_all),
1049                   NULL, NULL,
1050                   _gtk_marshal_BOOLEAN__VOID,
1051                   G_TYPE_BOOLEAN, 0);
1052
1053   tree_view_signals[SELECT_CURSOR_ROW] =
1054     g_signal_new (I_("select-cursor-row"),
1055                   G_TYPE_FROM_CLASS (object_class),
1056                   G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
1057                   G_STRUCT_OFFSET (GtkTreeViewClass, select_cursor_row),
1058                   NULL, NULL,
1059                   _gtk_marshal_BOOLEAN__BOOLEAN,
1060                   G_TYPE_BOOLEAN, 1,
1061                   G_TYPE_BOOLEAN);
1062
1063   tree_view_signals[TOGGLE_CURSOR_ROW] =
1064     g_signal_new (I_("toggle-cursor-row"),
1065                   G_TYPE_FROM_CLASS (object_class),
1066                   G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
1067                   G_STRUCT_OFFSET (GtkTreeViewClass, toggle_cursor_row),
1068                   NULL, NULL,
1069                   _gtk_marshal_BOOLEAN__VOID,
1070                   G_TYPE_BOOLEAN, 0);
1071
1072   tree_view_signals[EXPAND_COLLAPSE_CURSOR_ROW] =
1073     g_signal_new (I_("expand-collapse-cursor-row"),
1074                   G_TYPE_FROM_CLASS (object_class),
1075                   G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
1076                   G_STRUCT_OFFSET (GtkTreeViewClass, expand_collapse_cursor_row),
1077                   NULL, NULL,
1078                   _gtk_marshal_BOOLEAN__BOOLEAN_BOOLEAN_BOOLEAN,
1079                   G_TYPE_BOOLEAN, 3,
1080                   G_TYPE_BOOLEAN,
1081                   G_TYPE_BOOLEAN,
1082                   G_TYPE_BOOLEAN);
1083
1084   tree_view_signals[SELECT_CURSOR_PARENT] =
1085     g_signal_new (I_("select-cursor-parent"),
1086                   G_TYPE_FROM_CLASS (object_class),
1087                   G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
1088                   G_STRUCT_OFFSET (GtkTreeViewClass, select_cursor_parent),
1089                   NULL, NULL,
1090                   _gtk_marshal_BOOLEAN__VOID,
1091                   G_TYPE_BOOLEAN, 0);
1092
1093   tree_view_signals[START_INTERACTIVE_SEARCH] =
1094     g_signal_new (I_("start-interactive-search"),
1095                   G_TYPE_FROM_CLASS (object_class),
1096                   G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
1097                   G_STRUCT_OFFSET (GtkTreeViewClass, start_interactive_search),
1098                   NULL, NULL,
1099                   _gtk_marshal_BOOLEAN__VOID,
1100                   G_TYPE_BOOLEAN, 0);
1101
1102   /* Key bindings */
1103   gtk_tree_view_add_move_binding (binding_set, GDK_Up, 0, TRUE,
1104                                   GTK_MOVEMENT_DISPLAY_LINES, -1);
1105   gtk_tree_view_add_move_binding (binding_set, GDK_KP_Up, 0, TRUE,
1106                                   GTK_MOVEMENT_DISPLAY_LINES, -1);
1107
1108   gtk_tree_view_add_move_binding (binding_set, GDK_Down, 0, TRUE,
1109                                   GTK_MOVEMENT_DISPLAY_LINES, 1);
1110   gtk_tree_view_add_move_binding (binding_set, GDK_KP_Down, 0, TRUE,
1111                                   GTK_MOVEMENT_DISPLAY_LINES, 1);
1112
1113   gtk_tree_view_add_move_binding (binding_set, GDK_p, GDK_CONTROL_MASK, FALSE,
1114                                   GTK_MOVEMENT_DISPLAY_LINES, -1);
1115
1116   gtk_tree_view_add_move_binding (binding_set, GDK_n, GDK_CONTROL_MASK, FALSE,
1117                                   GTK_MOVEMENT_DISPLAY_LINES, 1);
1118
1119   gtk_tree_view_add_move_binding (binding_set, GDK_Home, 0, TRUE,
1120                                   GTK_MOVEMENT_BUFFER_ENDS, -1);
1121   gtk_tree_view_add_move_binding (binding_set, GDK_KP_Home, 0, TRUE,
1122                                   GTK_MOVEMENT_BUFFER_ENDS, -1);
1123
1124   gtk_tree_view_add_move_binding (binding_set, GDK_End, 0, TRUE,
1125                                   GTK_MOVEMENT_BUFFER_ENDS, 1);
1126   gtk_tree_view_add_move_binding (binding_set, GDK_KP_End, 0, TRUE,
1127                                   GTK_MOVEMENT_BUFFER_ENDS, 1);
1128
1129   gtk_tree_view_add_move_binding (binding_set, GDK_Page_Up, 0, TRUE,
1130                                   GTK_MOVEMENT_PAGES, -1);
1131   gtk_tree_view_add_move_binding (binding_set, GDK_KP_Page_Up, 0, TRUE,
1132                                   GTK_MOVEMENT_PAGES, -1);
1133
1134   gtk_tree_view_add_move_binding (binding_set, GDK_Page_Down, 0, TRUE,
1135                                   GTK_MOVEMENT_PAGES, 1);
1136   gtk_tree_view_add_move_binding (binding_set, GDK_KP_Page_Down, 0, TRUE,
1137                                   GTK_MOVEMENT_PAGES, 1);
1138
1139
1140   gtk_binding_entry_add_signal (binding_set, GDK_Right, 0, "move-cursor", 2,
1141                                 G_TYPE_ENUM, GTK_MOVEMENT_VISUAL_POSITIONS,
1142                                 G_TYPE_INT, 1);
1143
1144   gtk_binding_entry_add_signal (binding_set, GDK_Left, 0, "move-cursor", 2,
1145                                 G_TYPE_ENUM, GTK_MOVEMENT_VISUAL_POSITIONS,
1146                                 G_TYPE_INT, -1);
1147
1148   gtk_binding_entry_add_signal (binding_set, GDK_KP_Right, 0, "move-cursor", 2,
1149                                 G_TYPE_ENUM, GTK_MOVEMENT_VISUAL_POSITIONS,
1150                                 G_TYPE_INT, 1);
1151
1152   gtk_binding_entry_add_signal (binding_set, GDK_KP_Left, 0, "move-cursor", 2,
1153                                 G_TYPE_ENUM, GTK_MOVEMENT_VISUAL_POSITIONS,
1154                                 G_TYPE_INT, -1);
1155
1156   gtk_binding_entry_add_signal (binding_set, GDK_Right, GDK_CONTROL_MASK,
1157                                 "move-cursor", 2,
1158                                 G_TYPE_ENUM, GTK_MOVEMENT_VISUAL_POSITIONS,
1159                                 G_TYPE_INT, 1);
1160
1161   gtk_binding_entry_add_signal (binding_set, GDK_Left, GDK_CONTROL_MASK,
1162                                 "move-cursor", 2,
1163                                 G_TYPE_ENUM, GTK_MOVEMENT_VISUAL_POSITIONS,
1164                                 G_TYPE_INT, -1);
1165
1166   gtk_binding_entry_add_signal (binding_set, GDK_KP_Right, GDK_CONTROL_MASK,
1167                                 "move-cursor", 2,
1168                                 G_TYPE_ENUM, GTK_MOVEMENT_VISUAL_POSITIONS,
1169                                 G_TYPE_INT, 1);
1170
1171   gtk_binding_entry_add_signal (binding_set, GDK_KP_Left, GDK_CONTROL_MASK,
1172                                 "move-cursor", 2,
1173                                 G_TYPE_ENUM, GTK_MOVEMENT_VISUAL_POSITIONS,
1174                                 G_TYPE_INT, -1);
1175
1176   gtk_binding_entry_add_signal (binding_set, GDK_space, GDK_CONTROL_MASK, "toggle-cursor-row", 0);
1177   gtk_binding_entry_add_signal (binding_set, GDK_KP_Space, GDK_CONTROL_MASK, "toggle-cursor-row", 0);
1178
1179   gtk_binding_entry_add_signal (binding_set, GDK_a, GDK_CONTROL_MASK, "select-all", 0);
1180   gtk_binding_entry_add_signal (binding_set, GDK_slash, GDK_CONTROL_MASK, "select-all", 0);
1181
1182   gtk_binding_entry_add_signal (binding_set, GDK_A, GDK_CONTROL_MASK | GDK_SHIFT_MASK, "unselect-all", 0);
1183   gtk_binding_entry_add_signal (binding_set, GDK_backslash, GDK_CONTROL_MASK, "unselect-all", 0);
1184
1185   gtk_binding_entry_add_signal (binding_set, GDK_space, GDK_SHIFT_MASK, "select-cursor-row", 1,
1186                                 G_TYPE_BOOLEAN, TRUE);
1187   gtk_binding_entry_add_signal (binding_set, GDK_KP_Space, GDK_SHIFT_MASK, "select-cursor-row", 1,
1188                                 G_TYPE_BOOLEAN, TRUE);
1189
1190   gtk_binding_entry_add_signal (binding_set, GDK_space, 0, "select-cursor-row", 1,
1191                                 G_TYPE_BOOLEAN, TRUE);
1192   gtk_binding_entry_add_signal (binding_set, GDK_KP_Space, 0, "select-cursor-row", 1,
1193                                 G_TYPE_BOOLEAN, TRUE);
1194   gtk_binding_entry_add_signal (binding_set, GDK_Return, 0, "select-cursor-row", 1,
1195                                 G_TYPE_BOOLEAN, TRUE);
1196   gtk_binding_entry_add_signal (binding_set, GDK_ISO_Enter, 0, "select-cursor-row", 1,
1197                                 G_TYPE_BOOLEAN, TRUE);
1198   gtk_binding_entry_add_signal (binding_set, GDK_KP_Enter, 0, "select-cursor-row", 1,
1199                                 G_TYPE_BOOLEAN, TRUE);
1200
1201   /* expand and collapse rows */
1202   gtk_binding_entry_add_signal (binding_set, GDK_plus, 0, "expand-collapse-cursor-row", 3,
1203                                 G_TYPE_BOOLEAN, TRUE,
1204                                 G_TYPE_BOOLEAN, TRUE,
1205                                 G_TYPE_BOOLEAN, FALSE);
1206
1207   gtk_binding_entry_add_signal (binding_set, GDK_asterisk, 0,
1208                                 "expand-collapse-cursor-row", 3,
1209                                 G_TYPE_BOOLEAN, TRUE,
1210                                 G_TYPE_BOOLEAN, TRUE,
1211                                 G_TYPE_BOOLEAN, TRUE);
1212   gtk_binding_entry_add_signal (binding_set, GDK_KP_Multiply, 0,
1213                                 "expand-collapse-cursor-row", 3,
1214                                 G_TYPE_BOOLEAN, TRUE,
1215                                 G_TYPE_BOOLEAN, TRUE,
1216                                 G_TYPE_BOOLEAN, TRUE);
1217
1218   gtk_binding_entry_add_signal (binding_set, GDK_slash, 0,
1219                                 "expand-collapse-cursor-row", 3,
1220                                 G_TYPE_BOOLEAN, TRUE,
1221                                 G_TYPE_BOOLEAN, FALSE,
1222                                 G_TYPE_BOOLEAN, FALSE);
1223   gtk_binding_entry_add_signal (binding_set, GDK_KP_Divide, 0,
1224                                 "expand-collapse-cursor-row", 3,
1225                                 G_TYPE_BOOLEAN, TRUE,
1226                                 G_TYPE_BOOLEAN, FALSE,
1227                                 G_TYPE_BOOLEAN, FALSE);
1228
1229   /* Not doable on US keyboards */
1230   gtk_binding_entry_add_signal (binding_set, GDK_plus, GDK_SHIFT_MASK, "expand-collapse-cursor-row", 3,
1231                                 G_TYPE_BOOLEAN, TRUE,
1232                                 G_TYPE_BOOLEAN, TRUE,
1233                                 G_TYPE_BOOLEAN, TRUE);
1234   gtk_binding_entry_add_signal (binding_set, GDK_KP_Add, 0, "expand-collapse-cursor-row", 3,
1235                                 G_TYPE_BOOLEAN, TRUE,
1236                                 G_TYPE_BOOLEAN, TRUE,
1237                                 G_TYPE_BOOLEAN, FALSE);
1238   gtk_binding_entry_add_signal (binding_set, GDK_KP_Add, GDK_SHIFT_MASK, "expand-collapse-cursor-row", 3,
1239                                 G_TYPE_BOOLEAN, TRUE,
1240                                 G_TYPE_BOOLEAN, TRUE,
1241                                 G_TYPE_BOOLEAN, TRUE);
1242   gtk_binding_entry_add_signal (binding_set, GDK_KP_Add, GDK_SHIFT_MASK, "expand-collapse-cursor-row", 3,
1243                                 G_TYPE_BOOLEAN, TRUE,
1244                                 G_TYPE_BOOLEAN, TRUE,
1245                                 G_TYPE_BOOLEAN, TRUE);
1246   gtk_binding_entry_add_signal (binding_set, GDK_Right, GDK_SHIFT_MASK,
1247                                 "expand-collapse-cursor-row", 3,
1248                                 G_TYPE_BOOLEAN, FALSE,
1249                                 G_TYPE_BOOLEAN, TRUE,
1250                                 G_TYPE_BOOLEAN, TRUE);
1251   gtk_binding_entry_add_signal (binding_set, GDK_KP_Right, GDK_SHIFT_MASK,
1252                                 "expand-collapse-cursor-row", 3,
1253                                 G_TYPE_BOOLEAN, FALSE,
1254                                 G_TYPE_BOOLEAN, TRUE,
1255                                 G_TYPE_BOOLEAN, TRUE);
1256   gtk_binding_entry_add_signal (binding_set, GDK_Right,
1257                                 GDK_CONTROL_MASK | GDK_SHIFT_MASK,
1258                                 "expand-collapse-cursor-row", 3,
1259                                 G_TYPE_BOOLEAN, FALSE,
1260                                 G_TYPE_BOOLEAN, TRUE,
1261                                 G_TYPE_BOOLEAN, TRUE);
1262   gtk_binding_entry_add_signal (binding_set, GDK_KP_Right,
1263                                 GDK_CONTROL_MASK | GDK_SHIFT_MASK,
1264                                 "expand-collapse-cursor-row", 3,
1265                                 G_TYPE_BOOLEAN, FALSE,
1266                                 G_TYPE_BOOLEAN, TRUE,
1267                                 G_TYPE_BOOLEAN, TRUE);
1268
1269   gtk_binding_entry_add_signal (binding_set, GDK_minus, 0, "expand-collapse-cursor-row", 3,
1270                                 G_TYPE_BOOLEAN, TRUE,
1271                                 G_TYPE_BOOLEAN, FALSE,
1272                                 G_TYPE_BOOLEAN, FALSE);
1273   gtk_binding_entry_add_signal (binding_set, GDK_minus, GDK_SHIFT_MASK, "expand-collapse-cursor-row", 3,
1274                                 G_TYPE_BOOLEAN, TRUE,
1275                                 G_TYPE_BOOLEAN, FALSE,
1276                                 G_TYPE_BOOLEAN, TRUE);
1277   gtk_binding_entry_add_signal (binding_set, GDK_KP_Subtract, 0, "expand-collapse-cursor-row", 3,
1278                                 G_TYPE_BOOLEAN, TRUE,
1279                                 G_TYPE_BOOLEAN, FALSE,
1280                                 G_TYPE_BOOLEAN, FALSE);
1281   gtk_binding_entry_add_signal (binding_set, GDK_KP_Subtract, GDK_SHIFT_MASK, "expand-collapse-cursor-row", 3,
1282                                 G_TYPE_BOOLEAN, TRUE,
1283                                 G_TYPE_BOOLEAN, FALSE,
1284                                 G_TYPE_BOOLEAN, TRUE);
1285   gtk_binding_entry_add_signal (binding_set, GDK_Left, GDK_SHIFT_MASK,
1286                                 "expand-collapse-cursor-row", 3,
1287                                 G_TYPE_BOOLEAN, FALSE,
1288                                 G_TYPE_BOOLEAN, FALSE,
1289                                 G_TYPE_BOOLEAN, TRUE);
1290   gtk_binding_entry_add_signal (binding_set, GDK_KP_Left, GDK_SHIFT_MASK,
1291                                 "expand-collapse-cursor-row", 3,
1292                                 G_TYPE_BOOLEAN, FALSE,
1293                                 G_TYPE_BOOLEAN, FALSE,
1294                                 G_TYPE_BOOLEAN, TRUE);
1295   gtk_binding_entry_add_signal (binding_set, GDK_Left,
1296                                 GDK_CONTROL_MASK | GDK_SHIFT_MASK,
1297                                 "expand-collapse-cursor-row", 3,
1298                                 G_TYPE_BOOLEAN, FALSE,
1299                                 G_TYPE_BOOLEAN, FALSE,
1300                                 G_TYPE_BOOLEAN, TRUE);
1301   gtk_binding_entry_add_signal (binding_set, GDK_KP_Left,
1302                                 GDK_CONTROL_MASK | GDK_SHIFT_MASK,
1303                                 "expand-collapse-cursor-row", 3,
1304                                 G_TYPE_BOOLEAN, FALSE,
1305                                 G_TYPE_BOOLEAN, FALSE,
1306                                 G_TYPE_BOOLEAN, TRUE);
1307
1308   gtk_binding_entry_add_signal (binding_set, GDK_BackSpace, 0, "select-cursor-parent", 0);
1309   gtk_binding_entry_add_signal (binding_set, GDK_BackSpace, GDK_CONTROL_MASK, "select-cursor-parent", 0);
1310
1311   gtk_binding_entry_add_signal (binding_set, GDK_f, GDK_CONTROL_MASK, "start-interactive-search", 0);
1312
1313   gtk_binding_entry_add_signal (binding_set, GDK_F, GDK_CONTROL_MASK, "start-interactive-search", 0);
1314
1315   g_type_class_add_private (o_class, sizeof (GtkTreeViewPrivate));
1316 }
1317
1318 static void
1319 gtk_tree_view_buildable_init (GtkBuildableIface *iface)
1320 {
1321   iface->add_child = gtk_tree_view_buildable_add_child;
1322 }
1323
1324 static void
1325 gtk_tree_view_init (GtkTreeView *tree_view)
1326 {
1327   tree_view->priv = G_TYPE_INSTANCE_GET_PRIVATE (tree_view, GTK_TYPE_TREE_VIEW, GtkTreeViewPrivate);
1328
1329   gtk_widget_set_can_focus (GTK_WIDGET (tree_view), TRUE);
1330   gtk_widget_set_redraw_on_allocate (GTK_WIDGET (tree_view), FALSE);
1331
1332   tree_view->priv->flags =  GTK_TREE_VIEW_SHOW_EXPANDERS
1333                             | GTK_TREE_VIEW_DRAW_KEYFOCUS
1334                             | GTK_TREE_VIEW_HEADERS_VISIBLE;
1335
1336   /* We need some padding */
1337   tree_view->priv->dy = 0;
1338   tree_view->priv->cursor_offset = 0;
1339   tree_view->priv->n_columns = 0;
1340   tree_view->priv->header_height = 1;
1341   tree_view->priv->x_drag = 0;
1342   tree_view->priv->drag_pos = -1;
1343   tree_view->priv->header_has_focus = FALSE;
1344   tree_view->priv->pressed_button = -1;
1345   tree_view->priv->press_start_x = -1;
1346   tree_view->priv->press_start_y = -1;
1347   tree_view->priv->reorderable = FALSE;
1348   tree_view->priv->presize_handler_timer = 0;
1349   tree_view->priv->scroll_sync_timer = 0;
1350   tree_view->priv->fixed_height = -1;
1351   tree_view->priv->fixed_height_mode = FALSE;
1352   tree_view->priv->fixed_height_check = 0;
1353   gtk_tree_view_set_adjustments (tree_view, NULL, NULL);
1354   tree_view->priv->selection = _gtk_tree_selection_new_with_tree_view (tree_view);
1355   tree_view->priv->enable_search = TRUE;
1356   tree_view->priv->search_column = -1;
1357   tree_view->priv->search_position_func = gtk_tree_view_search_position_func;
1358   tree_view->priv->search_equal_func = gtk_tree_view_search_equal_func;
1359   tree_view->priv->search_custom_entry_set = FALSE;
1360   tree_view->priv->typeselect_flush_timeout = 0;
1361   tree_view->priv->init_hadjust_value = TRUE;
1362   tree_view->priv->width = 0;
1363
1364   tree_view->priv->hover_selection = FALSE;
1365   tree_view->priv->hover_expand = FALSE;
1366
1367   tree_view->priv->level_indentation = 0;
1368
1369   tree_view->priv->rubber_banding_enable = FALSE;
1370
1371   tree_view->priv->grid_lines = GTK_TREE_VIEW_GRID_LINES_NONE;
1372   tree_view->priv->tree_lines_enabled = FALSE;
1373
1374   tree_view->priv->tooltip_column = -1;
1375
1376   tree_view->priv->post_validation_flag = FALSE;
1377
1378   tree_view->priv->last_button_x = -1;
1379   tree_view->priv->last_button_y = -1;
1380
1381   tree_view->priv->event_last_x = -10000;
1382   tree_view->priv->event_last_y = -10000;
1383 }
1384
1385 \f
1386
1387 /* GObject Methods
1388  */
1389
1390 static void
1391 gtk_tree_view_set_property (GObject         *object,
1392                             guint            prop_id,
1393                             const GValue    *value,
1394                             GParamSpec      *pspec)
1395 {
1396   GtkTreeView *tree_view;
1397
1398   tree_view = GTK_TREE_VIEW (object);
1399
1400   switch (prop_id)
1401     {
1402     case PROP_MODEL:
1403       gtk_tree_view_set_model (tree_view, g_value_get_object (value));
1404       break;
1405     case PROP_HADJUSTMENT:
1406       gtk_tree_view_set_hadjustment (tree_view, g_value_get_object (value));
1407       break;
1408     case PROP_VADJUSTMENT:
1409       gtk_tree_view_set_vadjustment (tree_view, g_value_get_object (value));
1410       break;
1411     case PROP_HEADERS_VISIBLE:
1412       gtk_tree_view_set_headers_visible (tree_view, g_value_get_boolean (value));
1413       break;
1414     case PROP_HEADERS_CLICKABLE:
1415       gtk_tree_view_set_headers_clickable (tree_view, g_value_get_boolean (value));
1416       break;
1417     case PROP_EXPANDER_COLUMN:
1418       gtk_tree_view_set_expander_column (tree_view, g_value_get_object (value));
1419       break;
1420     case PROP_REORDERABLE:
1421       gtk_tree_view_set_reorderable (tree_view, g_value_get_boolean (value));
1422       break;
1423     case PROP_RULES_HINT:
1424       gtk_tree_view_set_rules_hint (tree_view, g_value_get_boolean (value));
1425       break;
1426     case PROP_ENABLE_SEARCH:
1427       gtk_tree_view_set_enable_search (tree_view, g_value_get_boolean (value));
1428       break;
1429     case PROP_SEARCH_COLUMN:
1430       gtk_tree_view_set_search_column (tree_view, g_value_get_int (value));
1431       break;
1432     case PROP_FIXED_HEIGHT_MODE:
1433       gtk_tree_view_set_fixed_height_mode (tree_view, g_value_get_boolean (value));
1434       break;
1435     case PROP_HOVER_SELECTION:
1436       tree_view->priv->hover_selection = g_value_get_boolean (value);
1437       break;
1438     case PROP_HOVER_EXPAND:
1439       tree_view->priv->hover_expand = g_value_get_boolean (value);
1440       break;
1441     case PROP_SHOW_EXPANDERS:
1442       gtk_tree_view_set_show_expanders (tree_view, g_value_get_boolean (value));
1443       break;
1444     case PROP_LEVEL_INDENTATION:
1445       tree_view->priv->level_indentation = g_value_get_int (value);
1446       break;
1447     case PROP_RUBBER_BANDING:
1448       tree_view->priv->rubber_banding_enable = g_value_get_boolean (value);
1449       break;
1450     case PROP_ENABLE_GRID_LINES:
1451       gtk_tree_view_set_grid_lines (tree_view, g_value_get_enum (value));
1452       break;
1453     case PROP_ENABLE_TREE_LINES:
1454       gtk_tree_view_set_enable_tree_lines (tree_view, g_value_get_boolean (value));
1455       break;
1456     case PROP_TOOLTIP_COLUMN:
1457       gtk_tree_view_set_tooltip_column (tree_view, g_value_get_int (value));
1458       break;
1459     default:
1460       G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
1461       break;
1462     }
1463 }
1464
1465 static void
1466 gtk_tree_view_get_property (GObject    *object,
1467                             guint       prop_id,
1468                             GValue     *value,
1469                             GParamSpec *pspec)
1470 {
1471   GtkTreeView *tree_view;
1472
1473   tree_view = GTK_TREE_VIEW (object);
1474
1475   switch (prop_id)
1476     {
1477     case PROP_MODEL:
1478       g_value_set_object (value, tree_view->priv->model);
1479       break;
1480     case PROP_HADJUSTMENT:
1481       g_value_set_object (value, tree_view->priv->hadjustment);
1482       break;
1483     case PROP_VADJUSTMENT:
1484       g_value_set_object (value, tree_view->priv->vadjustment);
1485       break;
1486     case PROP_HEADERS_VISIBLE:
1487       g_value_set_boolean (value, gtk_tree_view_get_headers_visible (tree_view));
1488       break;
1489     case PROP_HEADERS_CLICKABLE:
1490       g_value_set_boolean (value, gtk_tree_view_get_headers_clickable (tree_view));
1491       break;
1492     case PROP_EXPANDER_COLUMN:
1493       g_value_set_object (value, tree_view->priv->expander_column);
1494       break;
1495     case PROP_REORDERABLE:
1496       g_value_set_boolean (value, tree_view->priv->reorderable);
1497       break;
1498     case PROP_RULES_HINT:
1499       g_value_set_boolean (value, tree_view->priv->has_rules);
1500       break;
1501     case PROP_ENABLE_SEARCH:
1502       g_value_set_boolean (value, tree_view->priv->enable_search);
1503       break;
1504     case PROP_SEARCH_COLUMN:
1505       g_value_set_int (value, tree_view->priv->search_column);
1506       break;
1507     case PROP_FIXED_HEIGHT_MODE:
1508       g_value_set_boolean (value, tree_view->priv->fixed_height_mode);
1509       break;
1510     case PROP_HOVER_SELECTION:
1511       g_value_set_boolean (value, tree_view->priv->hover_selection);
1512       break;
1513     case PROP_HOVER_EXPAND:
1514       g_value_set_boolean (value, tree_view->priv->hover_expand);
1515       break;
1516     case PROP_SHOW_EXPANDERS:
1517       g_value_set_boolean (value, GTK_TREE_VIEW_FLAG_SET (tree_view, GTK_TREE_VIEW_SHOW_EXPANDERS));
1518       break;
1519     case PROP_LEVEL_INDENTATION:
1520       g_value_set_int (value, tree_view->priv->level_indentation);
1521       break;
1522     case PROP_RUBBER_BANDING:
1523       g_value_set_boolean (value, tree_view->priv->rubber_banding_enable);
1524       break;
1525     case PROP_ENABLE_GRID_LINES:
1526       g_value_set_enum (value, tree_view->priv->grid_lines);
1527       break;
1528     case PROP_ENABLE_TREE_LINES:
1529       g_value_set_boolean (value, tree_view->priv->tree_lines_enabled);
1530       break;
1531     case PROP_TOOLTIP_COLUMN:
1532       g_value_set_int (value, tree_view->priv->tooltip_column);
1533       break;
1534     default:
1535       G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
1536       break;
1537     }
1538 }
1539
1540 static void
1541 gtk_tree_view_finalize (GObject *object)
1542 {
1543   G_OBJECT_CLASS (gtk_tree_view_parent_class)->finalize (object);
1544 }
1545
1546 \f
1547
1548 static void
1549 gtk_tree_view_buildable_add_child (GtkBuildable *tree_view,
1550                                    GtkBuilder  *builder,
1551                                    GObject     *child,
1552                                    const gchar *type)
1553 {
1554   gtk_tree_view_append_column (GTK_TREE_VIEW (tree_view), GTK_TREE_VIEW_COLUMN (child));
1555 }
1556
1557 /* GtkObject Methods
1558  */
1559
1560 static void
1561 gtk_tree_view_free_rbtree (GtkTreeView *tree_view)
1562 {
1563   _gtk_rbtree_free (tree_view->priv->tree);
1564
1565   tree_view->priv->tree = NULL;
1566   tree_view->priv->button_pressed_node = NULL;
1567   tree_view->priv->button_pressed_tree = NULL;
1568   tree_view->priv->prelight_tree = NULL;
1569   tree_view->priv->prelight_node = NULL;
1570   tree_view->priv->expanded_collapsed_node = NULL;
1571   tree_view->priv->expanded_collapsed_tree = NULL;
1572 }
1573
1574 static void
1575 gtk_tree_view_destroy (GtkObject *object)
1576 {
1577   GtkTreeView *tree_view = GTK_TREE_VIEW (object);
1578   GList *list;
1579
1580   gtk_tree_view_stop_editing (tree_view, TRUE);
1581
1582   if (tree_view->priv->columns != NULL)
1583     {
1584       list = tree_view->priv->columns;
1585       while (list)
1586         {
1587           GtkTreeViewColumn *column;
1588           column = GTK_TREE_VIEW_COLUMN (list->data);
1589           list = list->next;
1590           gtk_tree_view_remove_column (tree_view, column);
1591         }
1592       tree_view->priv->columns = NULL;
1593     }
1594
1595   if (tree_view->priv->tree != NULL)
1596     {
1597       gtk_tree_view_unref_and_check_selection_tree (tree_view, tree_view->priv->tree);
1598
1599       gtk_tree_view_free_rbtree (tree_view);
1600     }
1601
1602   if (tree_view->priv->selection != NULL)
1603     {
1604       _gtk_tree_selection_set_tree_view (tree_view->priv->selection, NULL);
1605       g_object_unref (tree_view->priv->selection);
1606       tree_view->priv->selection = NULL;
1607     }
1608
1609   if (tree_view->priv->scroll_to_path != NULL)
1610     {
1611       gtk_tree_row_reference_free (tree_view->priv->scroll_to_path);
1612       tree_view->priv->scroll_to_path = NULL;
1613     }
1614
1615   if (tree_view->priv->drag_dest_row != NULL)
1616     {
1617       gtk_tree_row_reference_free (tree_view->priv->drag_dest_row);
1618       tree_view->priv->drag_dest_row = NULL;
1619     }
1620
1621   if (tree_view->priv->top_row != NULL)
1622     {
1623       gtk_tree_row_reference_free (tree_view->priv->top_row);
1624       tree_view->priv->top_row = NULL;
1625     }
1626
1627   if (tree_view->priv->column_drop_func_data &&
1628       tree_view->priv->column_drop_func_data_destroy)
1629     {
1630       tree_view->priv->column_drop_func_data_destroy (tree_view->priv->column_drop_func_data);
1631       tree_view->priv->column_drop_func_data = NULL;
1632     }
1633
1634   if (tree_view->priv->destroy_count_destroy &&
1635       tree_view->priv->destroy_count_data)
1636     {
1637       tree_view->priv->destroy_count_destroy (tree_view->priv->destroy_count_data);
1638       tree_view->priv->destroy_count_data = NULL;
1639     }
1640
1641   gtk_tree_row_reference_free (tree_view->priv->cursor);
1642   tree_view->priv->cursor = NULL;
1643
1644   gtk_tree_row_reference_free (tree_view->priv->anchor);
1645   tree_view->priv->anchor = NULL;
1646
1647   /* destroy interactive search dialog */
1648   if (tree_view->priv->search_window)
1649     {
1650       gtk_widget_destroy (tree_view->priv->search_window);
1651       tree_view->priv->search_window = NULL;
1652       tree_view->priv->search_entry = NULL;
1653       if (tree_view->priv->typeselect_flush_timeout)
1654         {
1655           g_source_remove (tree_view->priv->typeselect_flush_timeout);
1656           tree_view->priv->typeselect_flush_timeout = 0;
1657         }
1658     }
1659
1660   if (tree_view->priv->search_destroy && tree_view->priv->search_user_data)
1661     {
1662       tree_view->priv->search_destroy (tree_view->priv->search_user_data);
1663       tree_view->priv->search_user_data = NULL;
1664     }
1665
1666   if (tree_view->priv->search_position_destroy && tree_view->priv->search_position_user_data)
1667     {
1668       tree_view->priv->search_position_destroy (tree_view->priv->search_position_user_data);
1669       tree_view->priv->search_position_user_data = NULL;
1670     }
1671
1672   if (tree_view->priv->row_separator_destroy && tree_view->priv->row_separator_data)
1673     {
1674       tree_view->priv->row_separator_destroy (tree_view->priv->row_separator_data);
1675       tree_view->priv->row_separator_data = NULL;
1676     }
1677
1678   gtk_tree_view_set_model (tree_view, NULL);
1679
1680   if (tree_view->priv->hadjustment)
1681     {
1682       g_object_unref (tree_view->priv->hadjustment);
1683       tree_view->priv->hadjustment = NULL;
1684     }
1685   if (tree_view->priv->vadjustment)
1686     {
1687       g_object_unref (tree_view->priv->vadjustment);
1688       tree_view->priv->vadjustment = NULL;
1689     }
1690
1691   GTK_OBJECT_CLASS (gtk_tree_view_parent_class)->destroy (object);
1692 }
1693
1694 \f
1695
1696 /* GtkWidget Methods
1697  */
1698
1699 /* GtkWidget::map helper */
1700 static void
1701 gtk_tree_view_map_buttons (GtkTreeView *tree_view)
1702 {
1703   GList *list;
1704
1705   g_return_if_fail (gtk_widget_get_mapped (GTK_WIDGET (tree_view)));
1706
1707   if (GTK_TREE_VIEW_FLAG_SET (tree_view, GTK_TREE_VIEW_HEADERS_VISIBLE))
1708     {
1709       GtkTreeViewColumn *column;
1710
1711       for (list = tree_view->priv->columns; list; list = list->next)
1712         {
1713           column = list->data;
1714           if (gtk_widget_get_visible (column->button) &&
1715               !gtk_widget_get_mapped (column->button))
1716             gtk_widget_map (column->button);
1717         }
1718       for (list = tree_view->priv->columns; list; list = list->next)
1719         {
1720           column = list->data;
1721           if (column->visible == FALSE)
1722             continue;
1723           if (column->resizable)
1724             {
1725               gdk_window_raise (column->window);
1726               gdk_window_show (column->window);
1727             }
1728           else
1729             gdk_window_hide (column->window);
1730         }
1731       gdk_window_show (tree_view->priv->header_window);
1732     }
1733 }
1734
1735 static void
1736 gtk_tree_view_map (GtkWidget *widget)
1737 {
1738   GtkTreeView *tree_view = GTK_TREE_VIEW (widget);
1739   GList *tmp_list;
1740
1741   gtk_widget_set_mapped (widget, TRUE);
1742
1743   tmp_list = tree_view->priv->children;
1744   while (tmp_list)
1745     {
1746       GtkTreeViewChild *child = tmp_list->data;
1747       tmp_list = tmp_list->next;
1748
1749       if (gtk_widget_get_visible (child->widget))
1750         {
1751           if (!gtk_widget_get_mapped (child->widget))
1752             gtk_widget_map (child->widget);
1753         }
1754     }
1755   gdk_window_show (tree_view->priv->bin_window);
1756
1757   gtk_tree_view_map_buttons (tree_view);
1758
1759   gdk_window_show (widget->window);
1760 }
1761
1762 static void
1763 gtk_tree_view_realize (GtkWidget *widget)
1764 {
1765   GtkTreeView *tree_view = GTK_TREE_VIEW (widget);
1766   GList *tmp_list;
1767   GdkWindowAttr attributes;
1768   gint attributes_mask;
1769
1770   gtk_widget_set_realized (widget, TRUE);
1771
1772   /* Make the main, clipping window */
1773   attributes.window_type = GDK_WINDOW_CHILD;
1774   attributes.x = widget->allocation.x;
1775   attributes.y = widget->allocation.y;
1776   attributes.width = widget->allocation.width;
1777   attributes.height = widget->allocation.height;
1778   attributes.wclass = GDK_INPUT_OUTPUT;
1779   attributes.visual = gtk_widget_get_visual (widget);
1780   attributes.colormap = gtk_widget_get_colormap (widget);
1781   attributes.event_mask = GDK_VISIBILITY_NOTIFY_MASK;
1782
1783   attributes_mask = GDK_WA_X | GDK_WA_Y | GDK_WA_VISUAL | GDK_WA_COLORMAP;
1784
1785   widget->window = gdk_window_new (gtk_widget_get_parent_window (widget),
1786                                    &attributes, attributes_mask);
1787   gdk_window_set_user_data (widget->window, widget);
1788
1789   /* Make the window for the tree */
1790   attributes.x = 0;
1791   attributes.y = TREE_VIEW_HEADER_HEIGHT (tree_view);
1792   attributes.width = MAX (tree_view->priv->width, widget->allocation.width);
1793   attributes.height = widget->allocation.height;
1794   attributes.event_mask = (GDK_EXPOSURE_MASK |
1795                            GDK_SCROLL_MASK |
1796                            GDK_POINTER_MOTION_MASK |
1797                            GDK_ENTER_NOTIFY_MASK |
1798                            GDK_LEAVE_NOTIFY_MASK |
1799                            GDK_BUTTON_PRESS_MASK |
1800                            GDK_BUTTON_RELEASE_MASK |
1801                            gtk_widget_get_events (widget));
1802
1803   tree_view->priv->bin_window = gdk_window_new (widget->window,
1804                                                 &attributes, attributes_mask);
1805   gdk_window_set_user_data (tree_view->priv->bin_window, widget);
1806
1807   /* Make the column header window */
1808   attributes.x = 0;
1809   attributes.y = 0;
1810   attributes.width = MAX (tree_view->priv->width, widget->allocation.width);
1811   attributes.height = tree_view->priv->header_height;
1812   attributes.event_mask = (GDK_EXPOSURE_MASK |
1813                            GDK_SCROLL_MASK |
1814                            GDK_BUTTON_PRESS_MASK |
1815                            GDK_BUTTON_RELEASE_MASK |
1816                            GDK_KEY_PRESS_MASK |
1817                            GDK_KEY_RELEASE_MASK |
1818                            gtk_widget_get_events (widget));
1819
1820   tree_view->priv->header_window = gdk_window_new (widget->window,
1821                                                    &attributes, attributes_mask);
1822   gdk_window_set_user_data (tree_view->priv->header_window, widget);
1823
1824   /* Add them all up. */
1825   widget->style = gtk_style_attach (widget->style, widget->window);
1826   gdk_window_set_back_pixmap (widget->window, NULL, FALSE);
1827   gdk_window_set_background (tree_view->priv->bin_window, &widget->style->base[widget->state]);
1828   gtk_style_set_background (widget->style, tree_view->priv->header_window, GTK_STATE_NORMAL);
1829
1830   tmp_list = tree_view->priv->children;
1831   while (tmp_list)
1832     {
1833       GtkTreeViewChild *child = tmp_list->data;
1834       tmp_list = tmp_list->next;
1835
1836       gtk_widget_set_parent_window (child->widget, tree_view->priv->bin_window);
1837     }
1838
1839   for (tmp_list = tree_view->priv->columns; tmp_list; tmp_list = tmp_list->next)
1840     _gtk_tree_view_column_realize_button (GTK_TREE_VIEW_COLUMN (tmp_list->data));
1841
1842   /* Need to call those here, since they create GCs */
1843   gtk_tree_view_set_grid_lines (tree_view, tree_view->priv->grid_lines);
1844   gtk_tree_view_set_enable_tree_lines (tree_view, tree_view->priv->tree_lines_enabled);
1845
1846   install_presize_handler (tree_view);
1847 }
1848
1849 static void
1850 gtk_tree_view_unrealize (GtkWidget *widget)
1851 {
1852   GtkTreeView *tree_view = GTK_TREE_VIEW (widget);
1853   GtkTreeViewPrivate *priv = tree_view->priv;
1854   GList *list;
1855
1856   if (priv->scroll_timeout != 0)
1857     {
1858       g_source_remove (priv->scroll_timeout);
1859       priv->scroll_timeout = 0;
1860     }
1861
1862   if (priv->auto_expand_timeout != 0)
1863     {
1864       g_source_remove (priv->auto_expand_timeout);
1865       priv->auto_expand_timeout = 0;
1866     }
1867
1868   if (priv->open_dest_timeout != 0)
1869     {
1870       g_source_remove (priv->open_dest_timeout);
1871       priv->open_dest_timeout = 0;
1872     }
1873
1874   remove_expand_collapse_timeout (tree_view);
1875
1876   if (priv->presize_handler_timer != 0)
1877     {
1878       g_source_remove (priv->presize_handler_timer);
1879       priv->presize_handler_timer = 0;
1880     }
1881
1882   if (priv->validate_rows_timer != 0)
1883     {
1884       g_source_remove (priv->validate_rows_timer);
1885       priv->validate_rows_timer = 0;
1886     }
1887
1888   if (priv->scroll_sync_timer != 0)
1889     {
1890       g_source_remove (priv->scroll_sync_timer);
1891       priv->scroll_sync_timer = 0;
1892     }
1893
1894   if (priv->typeselect_flush_timeout)
1895     {
1896       g_source_remove (priv->typeselect_flush_timeout);
1897       priv->typeselect_flush_timeout = 0;
1898     }
1899
1900   for (list = priv->columns; list; list = list->next)
1901     _gtk_tree_view_column_unrealize_button (GTK_TREE_VIEW_COLUMN (list->data));
1902
1903   gdk_window_set_user_data (priv->bin_window, NULL);
1904   gdk_window_destroy (priv->bin_window);
1905   priv->bin_window = NULL;
1906
1907   gdk_window_set_user_data (priv->header_window, NULL);
1908   gdk_window_destroy (priv->header_window);
1909   priv->header_window = NULL;
1910
1911   if (priv->drag_window)
1912     {
1913       gdk_window_set_user_data (priv->drag_window, NULL);
1914       gdk_window_destroy (priv->drag_window);
1915       priv->drag_window = NULL;
1916     }
1917
1918   if (priv->drag_highlight_window)
1919     {
1920       gdk_window_set_user_data (priv->drag_highlight_window, NULL);
1921       gdk_window_destroy (priv->drag_highlight_window);
1922       priv->drag_highlight_window = NULL;
1923     }
1924
1925   if (priv->tree_line_gc)
1926     {
1927       g_object_unref (priv->tree_line_gc);
1928       priv->tree_line_gc = NULL;
1929     }
1930
1931   if (priv->grid_line_gc)
1932     {
1933       g_object_unref (priv->grid_line_gc);
1934       priv->grid_line_gc = NULL;
1935     }
1936
1937   GTK_WIDGET_CLASS (gtk_tree_view_parent_class)->unrealize (widget);
1938 }
1939
1940 /* GtkWidget::size_request helper */
1941 static void
1942 gtk_tree_view_size_request_columns (GtkTreeView *tree_view)
1943 {
1944   GList *list;
1945
1946   tree_view->priv->header_height = 0;
1947
1948   if (tree_view->priv->model)
1949     {
1950       for (list = tree_view->priv->columns; list; list = list->next)
1951         {
1952           GtkRequisition requisition;
1953           GtkTreeViewColumn *column = list->data;
1954
1955           if (column->button == NULL)
1956             continue;
1957
1958           column = list->data;
1959
1960           gtk_widget_size_request (column->button, &requisition);
1961           column->button_request = requisition.width;
1962           tree_view->priv->header_height = MAX (tree_view->priv->header_height, requisition.height);
1963         }
1964     }
1965 }
1966
1967
1968 /* Called only by ::size_request */
1969 static void
1970 gtk_tree_view_update_size (GtkTreeView *tree_view)
1971 {
1972   GList *list;
1973   GtkTreeViewColumn *column;
1974   gint i;
1975
1976   if (tree_view->priv->model == NULL)
1977     {
1978       tree_view->priv->width = 0;
1979       tree_view->priv->prev_width = 0;
1980       tree_view->priv->height = 0;
1981       return;
1982     }
1983
1984   tree_view->priv->prev_width = tree_view->priv->width;
1985   tree_view->priv->width = 0;
1986
1987   /* keep this in sync with size_allocate below */
1988   for (list = tree_view->priv->columns, i = 0; list; list = list->next, i++)
1989     {
1990       gint real_requested_width = 0;
1991       column = list->data;
1992       if (!column->visible)
1993         continue;
1994
1995       if (column->use_resized_width)
1996         {
1997           real_requested_width = column->resized_width;
1998         }
1999       else if (column->column_type == GTK_TREE_VIEW_COLUMN_FIXED)
2000         {
2001           real_requested_width = column->fixed_width;
2002         }
2003       else if (GTK_TREE_VIEW_FLAG_SET (tree_view, GTK_TREE_VIEW_HEADERS_VISIBLE))
2004         {
2005           real_requested_width = MAX (column->requested_width, column->button_request);
2006         }
2007       else
2008         {
2009           real_requested_width = column->requested_width;
2010         }
2011
2012       if (column->min_width != -1)
2013         real_requested_width = MAX (real_requested_width, column->min_width);
2014       if (column->max_width != -1)
2015         real_requested_width = MIN (real_requested_width, column->max_width);
2016
2017       tree_view->priv->width += real_requested_width;
2018     }
2019
2020   if (tree_view->priv->tree == NULL)
2021     tree_view->priv->height = 0;
2022   else
2023     tree_view->priv->height = tree_view->priv->tree->root->offset;
2024 }
2025
2026 static void
2027 gtk_tree_view_size_request (GtkWidget      *widget,
2028                             GtkRequisition *requisition)
2029 {
2030   GtkTreeView *tree_view = GTK_TREE_VIEW (widget);
2031   GList *tmp_list;
2032
2033   /* we validate some rows initially just to make sure we have some size.
2034    * In practice, with a lot of static lists, this should get a good width.
2035    */
2036   do_validate_rows (tree_view, FALSE);
2037   gtk_tree_view_size_request_columns (tree_view);
2038   gtk_tree_view_update_size (GTK_TREE_VIEW (widget));
2039
2040   requisition->width = tree_view->priv->width;
2041   requisition->height = tree_view->priv->height + TREE_VIEW_HEADER_HEIGHT (tree_view);
2042
2043   tmp_list = tree_view->priv->children;
2044
2045   while (tmp_list)
2046     {
2047       GtkTreeViewChild *child = tmp_list->data;
2048       GtkRequisition child_requisition;
2049
2050       tmp_list = tmp_list->next;
2051
2052       if (gtk_widget_get_visible (child->widget))
2053         gtk_widget_size_request (child->widget, &child_requisition);
2054     }
2055 }
2056
2057 static int
2058 gtk_tree_view_calculate_width_before_expander (GtkTreeView *tree_view)
2059 {
2060   int width = 0;
2061   GList *list;
2062   gboolean rtl;
2063
2064   rtl = (gtk_widget_get_direction (GTK_WIDGET (tree_view)) == GTK_TEXT_DIR_RTL);
2065   for (list = (rtl ? g_list_last (tree_view->priv->columns) : g_list_first (tree_view->priv->columns));
2066        list->data != tree_view->priv->expander_column;
2067        list = (rtl ? list->prev : list->next))
2068     {
2069       GtkTreeViewColumn *column = list->data;
2070
2071       width += column->width;
2072     }
2073
2074   return width;
2075 }
2076
2077 static void
2078 invalidate_column (GtkTreeView       *tree_view,
2079                    GtkTreeViewColumn *column)
2080 {
2081   gint column_offset = 0;
2082   GList *list;
2083   GtkWidget *widget = GTK_WIDGET (tree_view);
2084   gboolean rtl;
2085
2086   if (!gtk_widget_get_realized (widget))
2087     return;
2088
2089   rtl = (gtk_widget_get_direction (GTK_WIDGET (tree_view)) == GTK_TEXT_DIR_RTL);
2090   for (list = (rtl ? g_list_last (tree_view->priv->columns) : g_list_first (tree_view->priv->columns));
2091        list;
2092        list = (rtl ? list->prev : list->next))
2093     {
2094       GtkTreeViewColumn *tmpcolumn = list->data;
2095       if (tmpcolumn == column)
2096         {
2097           GdkRectangle invalid_rect;
2098
2099           invalid_rect.x = column_offset;
2100           invalid_rect.y = 0;
2101           invalid_rect.width = column->width;
2102           invalid_rect.height = widget->allocation.height;
2103
2104           gdk_window_invalidate_rect (widget->window, &invalid_rect, TRUE);
2105           break;
2106         }
2107
2108       column_offset += tmpcolumn->width;
2109     }
2110 }
2111
2112 static void
2113 invalidate_last_column (GtkTreeView *tree_view)
2114 {
2115   GList *last_column;
2116   gboolean rtl;
2117
2118   rtl = (gtk_widget_get_direction (GTK_WIDGET (tree_view)) == GTK_TEXT_DIR_RTL);
2119
2120   for (last_column = (rtl ? g_list_first (tree_view->priv->columns) : g_list_last (tree_view->priv->columns));
2121        last_column;
2122        last_column = (rtl ? last_column->next : last_column->prev))
2123     {
2124       if (GTK_TREE_VIEW_COLUMN (last_column->data)->visible)
2125         {
2126           invalidate_column (tree_view, last_column->data);
2127           return;
2128         }
2129     }
2130 }
2131
2132 static gint
2133 gtk_tree_view_get_real_requested_width_from_column (GtkTreeView       *tree_view,
2134                                                     GtkTreeViewColumn *column)
2135 {
2136   gint real_requested_width;
2137
2138   if (column->use_resized_width)
2139     {
2140       real_requested_width = column->resized_width;
2141     }
2142   else if (column->column_type == GTK_TREE_VIEW_COLUMN_FIXED)
2143     {
2144       real_requested_width = column->fixed_width;
2145     }
2146   else if (GTK_TREE_VIEW_FLAG_SET (tree_view, GTK_TREE_VIEW_HEADERS_VISIBLE))
2147     {
2148       real_requested_width = MAX (column->requested_width, column->button_request);
2149     }
2150   else
2151     {
2152       real_requested_width = column->requested_width;
2153       if (real_requested_width < 0)
2154         real_requested_width = 0;
2155     }
2156
2157   if (column->min_width != -1)
2158     real_requested_width = MAX (real_requested_width, column->min_width);
2159   if (column->max_width != -1)
2160     real_requested_width = MIN (real_requested_width, column->max_width);
2161
2162   return real_requested_width;
2163 }
2164
2165 /* GtkWidget::size_allocate helper */
2166 static void
2167 gtk_tree_view_size_allocate_columns (GtkWidget *widget,
2168                                      gboolean  *width_changed)
2169 {
2170   GtkTreeView *tree_view;
2171   GList *list, *first_column, *last_column;
2172   GtkTreeViewColumn *column;
2173   GtkAllocation allocation;
2174   gint width = 0;
2175   gint extra, extra_per_column, extra_for_last;
2176   gint full_requested_width = 0;
2177   gint number_of_expand_columns = 0;
2178   gboolean column_changed = FALSE;
2179   gboolean rtl;
2180   gboolean update_expand;
2181
2182   tree_view = GTK_TREE_VIEW (widget);
2183
2184   for (last_column = g_list_last (tree_view->priv->columns);
2185        last_column && !(GTK_TREE_VIEW_COLUMN (last_column->data)->visible);
2186        last_column = last_column->prev)
2187     ;
2188   if (last_column == NULL)
2189     return;
2190
2191   for (first_column = g_list_first (tree_view->priv->columns);
2192        first_column && !(GTK_TREE_VIEW_COLUMN (first_column->data)->visible);
2193        first_column = first_column->next)
2194     ;
2195
2196   allocation.y = 0;
2197   allocation.height = tree_view->priv->header_height;
2198
2199   rtl = (gtk_widget_get_direction (widget) == GTK_TEXT_DIR_RTL);
2200
2201   /* find out how many extra space and expandable columns we have */
2202   for (list = tree_view->priv->columns; list != last_column->next; list = list->next)
2203     {
2204       column = (GtkTreeViewColumn *)list->data;
2205
2206       if (!column->visible)
2207         continue;
2208
2209       full_requested_width += gtk_tree_view_get_real_requested_width_from_column (tree_view, column);
2210
2211       if (column->expand)
2212         number_of_expand_columns++;
2213     }
2214
2215   /* Only update the expand value if the width of the widget has changed,
2216    * or the number of expand columns has changed, or if there are no expand
2217    * columns, or if we didn't have an size-allocation yet after the
2218    * last validated node.
2219    */
2220   update_expand = (width_changed && *width_changed == TRUE)
2221       || number_of_expand_columns != tree_view->priv->last_number_of_expand_columns
2222       || number_of_expand_columns == 0
2223       || tree_view->priv->post_validation_flag == TRUE;
2224
2225   tree_view->priv->post_validation_flag = FALSE;
2226
2227   if (!update_expand)
2228     {
2229       extra = tree_view->priv->last_extra_space;
2230       extra_for_last = MAX (widget->allocation.width - full_requested_width - extra, 0);
2231     }
2232   else
2233     {
2234       extra = MAX (widget->allocation.width - full_requested_width, 0);
2235       extra_for_last = 0;
2236
2237       tree_view->priv->last_extra_space = extra;
2238     }
2239
2240   if (number_of_expand_columns > 0)
2241     extra_per_column = extra/number_of_expand_columns;
2242   else
2243     extra_per_column = 0;
2244
2245   if (update_expand)
2246     {
2247       tree_view->priv->last_extra_space_per_column = extra_per_column;
2248       tree_view->priv->last_number_of_expand_columns = number_of_expand_columns;
2249     }
2250
2251   for (list = (rtl ? last_column : first_column);
2252        list != (rtl ? first_column->prev : last_column->next);
2253        list = (rtl ? list->prev : list->next))
2254     {
2255       gint real_requested_width = 0;
2256       gint old_width;
2257
2258       column = list->data;
2259       old_width = column->width;
2260
2261       if (!column->visible)
2262         continue;
2263
2264       /* We need to handle the dragged button specially.
2265        */
2266       if (column == tree_view->priv->drag_column)
2267         {
2268           GtkAllocation drag_allocation;
2269           gdk_drawable_get_size (tree_view->priv->drag_window,
2270                                  &(drag_allocation.width),
2271                                  &(drag_allocation.height));
2272           drag_allocation.x = 0;
2273           drag_allocation.y = 0;
2274           gtk_widget_size_allocate (tree_view->priv->drag_column->button,
2275                                     &drag_allocation);
2276           width += drag_allocation.width;
2277           continue;
2278         }
2279
2280       real_requested_width = gtk_tree_view_get_real_requested_width_from_column (tree_view, column);
2281
2282       allocation.x = width;
2283       column->width = real_requested_width;
2284
2285       if (column->expand)
2286         {
2287           if (number_of_expand_columns == 1)
2288             {
2289               /* We add the remander to the last column as
2290                * */
2291               column->width += extra;
2292             }
2293           else
2294             {
2295               column->width += extra_per_column;
2296               extra -= extra_per_column;
2297               number_of_expand_columns --;
2298             }
2299         }
2300       else if (number_of_expand_columns == 0 &&
2301                list == last_column)
2302         {
2303           column->width += extra;
2304         }
2305
2306       /* In addition to expand, the last column can get even more
2307        * extra space so all available space is filled up.
2308        */
2309       if (extra_for_last > 0 && list == last_column)
2310         column->width += extra_for_last;
2311
2312       g_object_notify (G_OBJECT (column), "width");
2313
2314       allocation.width = column->width;
2315       width += column->width;
2316
2317       if (column->width > old_width)
2318         column_changed = TRUE;
2319
2320       gtk_widget_size_allocate (column->button, &allocation);
2321
2322       if (column->window)
2323         gdk_window_move_resize (column->window,
2324                                 allocation.x + (rtl ? 0 : allocation.width) - TREE_VIEW_DRAG_WIDTH/2,
2325                                 allocation.y,
2326                                 TREE_VIEW_DRAG_WIDTH, allocation.height);
2327     }
2328
2329   /* We change the width here.  The user might have been resizing columns,
2330    * so the total width of the tree view changes.
2331    */
2332   tree_view->priv->width = width;
2333   if (width_changed)
2334     *width_changed = TRUE;
2335
2336   if (column_changed)
2337     gtk_widget_queue_draw (GTK_WIDGET (tree_view));
2338 }
2339
2340
2341 static void
2342 gtk_tree_view_size_allocate (GtkWidget     *widget,
2343                              GtkAllocation *allocation)
2344 {
2345   GtkTreeView *tree_view = GTK_TREE_VIEW (widget);
2346   GList *tmp_list;
2347   gboolean width_changed = FALSE;
2348   gint old_width = widget->allocation.width;
2349
2350   if (allocation->width != widget->allocation.width)
2351     width_changed = TRUE;
2352
2353   widget->allocation = *allocation;
2354
2355   tmp_list = tree_view->priv->children;
2356
2357   while (tmp_list)
2358     {
2359       GtkAllocation allocation;
2360
2361       GtkTreeViewChild *child = tmp_list->data;
2362       tmp_list = tmp_list->next;
2363
2364       /* totally ignore our child's requisition */
2365       allocation.x = child->x;
2366       allocation.y = child->y;
2367       allocation.width = child->width;
2368       allocation.height = child->height;
2369       gtk_widget_size_allocate (child->widget, &allocation);
2370     }
2371
2372   /* We size-allocate the columns first because the width of the
2373    * tree view (used in updating the adjustments below) might change.
2374    */
2375   gtk_tree_view_size_allocate_columns (widget, &width_changed);
2376
2377   tree_view->priv->hadjustment->page_size = allocation->width;
2378   tree_view->priv->hadjustment->page_increment = allocation->width * 0.9;
2379   tree_view->priv->hadjustment->step_increment = allocation->width * 0.1;
2380   tree_view->priv->hadjustment->lower = 0;
2381   tree_view->priv->hadjustment->upper = MAX (tree_view->priv->hadjustment->page_size, tree_view->priv->width);
2382
2383   if (gtk_widget_get_direction(widget) == GTK_TEXT_DIR_RTL)
2384     {
2385       if (allocation->width < tree_view->priv->width)
2386         {
2387           if (tree_view->priv->init_hadjust_value)
2388             {
2389               tree_view->priv->hadjustment->value = MAX (tree_view->priv->width - allocation->width, 0);
2390               tree_view->priv->init_hadjust_value = FALSE;
2391             }
2392           else if (allocation->width != old_width)
2393             {
2394               tree_view->priv->hadjustment->value = CLAMP (tree_view->priv->hadjustment->value - allocation->width + old_width, 0, tree_view->priv->width - allocation->width);
2395             }
2396           else
2397             tree_view->priv->hadjustment->value = CLAMP (tree_view->priv->width - (tree_view->priv->prev_width - tree_view->priv->hadjustment->value), 0, tree_view->priv->width - allocation->width);
2398         }
2399       else
2400         {
2401           tree_view->priv->hadjustment->value = 0;
2402           tree_view->priv->init_hadjust_value = TRUE;
2403         }
2404     }
2405   else
2406     if (tree_view->priv->hadjustment->value + allocation->width > tree_view->priv->width)
2407       tree_view->priv->hadjustment->value = MAX (tree_view->priv->width - allocation->width, 0);
2408
2409   gtk_adjustment_changed (tree_view->priv->hadjustment);
2410
2411   tree_view->priv->vadjustment->page_size = allocation->height - TREE_VIEW_HEADER_HEIGHT (tree_view);
2412   tree_view->priv->vadjustment->step_increment = tree_view->priv->vadjustment->page_size * 0.1;
2413   tree_view->priv->vadjustment->page_increment = tree_view->priv->vadjustment->page_size * 0.9;
2414   tree_view->priv->vadjustment->lower = 0;
2415   tree_view->priv->vadjustment->upper = MAX (tree_view->priv->vadjustment->page_size, tree_view->priv->height);
2416
2417   gtk_adjustment_changed (tree_view->priv->vadjustment);
2418
2419   /* now the adjustments and window sizes are in sync, we can sync toprow/dy again */
2420   if (tree_view->priv->height <= tree_view->priv->vadjustment->page_size)
2421     gtk_adjustment_set_value (GTK_ADJUSTMENT (tree_view->priv->vadjustment), 0);
2422   else if (tree_view->priv->vadjustment->value + tree_view->priv->vadjustment->page_size > tree_view->priv->height)
2423     gtk_adjustment_set_value (GTK_ADJUSTMENT (tree_view->priv->vadjustment),
2424                               tree_view->priv->height - tree_view->priv->vadjustment->page_size);
2425   else if (gtk_tree_row_reference_valid (tree_view->priv->top_row))
2426     gtk_tree_view_top_row_to_dy (tree_view);
2427   else
2428     gtk_tree_view_dy_to_top_row (tree_view);
2429
2430   if (gtk_widget_get_realized (widget))
2431     {
2432       gdk_window_move_resize (widget->window,
2433                               allocation->x, allocation->y,
2434                               allocation->width, allocation->height);
2435       gdk_window_move_resize (tree_view->priv->header_window,
2436                               - (gint) tree_view->priv->hadjustment->value,
2437                               0,
2438                               MAX (tree_view->priv->width, allocation->width),
2439                               tree_view->priv->header_height);
2440       gdk_window_move_resize (tree_view->priv->bin_window,
2441                               - (gint) tree_view->priv->hadjustment->value,
2442                               TREE_VIEW_HEADER_HEIGHT (tree_view),
2443                               MAX (tree_view->priv->width, allocation->width),
2444                               allocation->height - TREE_VIEW_HEADER_HEIGHT (tree_view));
2445     }
2446
2447   if (tree_view->priv->tree == NULL)
2448     invalidate_empty_focus (tree_view);
2449
2450   if (gtk_widget_get_realized (widget))
2451     {
2452       gboolean has_expand_column = FALSE;
2453       for (tmp_list = tree_view->priv->columns; tmp_list; tmp_list = tmp_list->next)
2454         {
2455           if (gtk_tree_view_column_get_expand (GTK_TREE_VIEW_COLUMN (tmp_list->data)))
2456             {
2457               has_expand_column = TRUE;
2458               break;
2459             }
2460         }
2461
2462       if (width_changed && tree_view->priv->expander_column)
2463         {
2464           /* Might seem awkward, but is the best heuristic I could come up
2465            * with.  Only if the width of the columns before the expander
2466            * changes, we will update the prelight status.  It is this
2467            * width that makes the expander move vertically.  Always updating
2468            * prelight status causes trouble with hover selections.
2469            */
2470           gint width_before_expander;
2471
2472           width_before_expander = gtk_tree_view_calculate_width_before_expander (tree_view);
2473
2474           if (tree_view->priv->prev_width_before_expander
2475               != width_before_expander)
2476               update_prelight (tree_view,
2477                                tree_view->priv->event_last_x,
2478                                tree_view->priv->event_last_y);
2479
2480           tree_view->priv->prev_width_before_expander = width_before_expander;
2481         }
2482
2483       /* This little hack only works if we have an LTR locale, and no column has the  */
2484       if (width_changed)
2485         {
2486           if (gtk_widget_get_direction (GTK_WIDGET (tree_view)) == GTK_TEXT_DIR_LTR &&
2487               ! has_expand_column)
2488             invalidate_last_column (tree_view);
2489           else
2490             gtk_widget_queue_draw (widget);
2491         }
2492     }
2493 }
2494
2495 /* Grabs the focus and unsets the GTK_TREE_VIEW_DRAW_KEYFOCUS flag */
2496 static void
2497 grab_focus_and_unset_draw_keyfocus (GtkTreeView *tree_view)
2498 {
2499   GtkWidget *widget = GTK_WIDGET (tree_view);
2500
2501   if (gtk_widget_get_can_focus (widget) && !gtk_widget_has_focus (widget))
2502     gtk_widget_grab_focus (widget);
2503   GTK_TREE_VIEW_UNSET_FLAG (tree_view, GTK_TREE_VIEW_DRAW_KEYFOCUS);
2504 }
2505
2506 static inline gboolean
2507 row_is_separator (GtkTreeView *tree_view,
2508                   GtkTreeIter *iter,
2509                   GtkTreePath *path)
2510 {
2511   gboolean is_separator = FALSE;
2512
2513   if (tree_view->priv->row_separator_func)
2514     {
2515       GtkTreeIter tmpiter;
2516
2517       if (iter)
2518         tmpiter = *iter;
2519       else
2520         gtk_tree_model_get_iter (tree_view->priv->model, &tmpiter, path);
2521
2522       is_separator = tree_view->priv->row_separator_func (tree_view->priv->model,
2523                                                           &tmpiter,
2524                                                           tree_view->priv->row_separator_data);
2525     }
2526
2527   return is_separator;
2528 }
2529
2530 static gboolean
2531 gtk_tree_view_button_press (GtkWidget      *widget,
2532                             GdkEventButton *event)
2533 {
2534   GtkTreeView *tree_view = GTK_TREE_VIEW (widget);
2535   GList *list;
2536   GtkTreeViewColumn *column = NULL;
2537   gint i;
2538   GdkRectangle background_area;
2539   GdkRectangle cell_area;
2540   gint vertical_separator;
2541   gint horizontal_separator;
2542   gboolean path_is_selectable;
2543   gboolean rtl;
2544
2545   rtl = (gtk_widget_get_direction (widget) == GTK_TEXT_DIR_RTL);
2546   gtk_tree_view_stop_editing (tree_view, FALSE);
2547   gtk_widget_style_get (widget,
2548                         "vertical-separator", &vertical_separator,
2549                         "horizontal-separator", &horizontal_separator,
2550                         NULL);
2551
2552
2553   /* Because grab_focus can cause reentrancy, we delay grab_focus until after
2554    * we're done handling the button press.
2555    */
2556
2557   if (event->window == tree_view->priv->bin_window)
2558     {
2559       GtkRBNode *node;
2560       GtkRBTree *tree;
2561       GtkTreePath *path;
2562       gchar *path_string;
2563       gint depth;
2564       gint new_y;
2565       gint y_offset;
2566       gint dval;
2567       gint pre_val, aft_val;
2568       GtkTreeViewColumn *column = NULL;
2569       GtkCellRenderer *focus_cell = NULL;
2570       gint column_handled_click = FALSE;
2571       gboolean row_double_click = FALSE;
2572       gboolean rtl;
2573       gboolean node_selected;
2574
2575       /* Empty tree? */
2576       if (tree_view->priv->tree == NULL)
2577         {
2578           grab_focus_and_unset_draw_keyfocus (tree_view);
2579           return TRUE;
2580         }
2581
2582       /* are we in an arrow? */
2583       if (tree_view->priv->prelight_node &&
2584           GTK_TREE_VIEW_FLAG_SET (tree_view, GTK_TREE_VIEW_ARROW_PRELIT) &&
2585           TREE_VIEW_DRAW_EXPANDERS (tree_view))
2586         {
2587           if (event->button == 1)
2588             {
2589               gtk_grab_add (widget);
2590               tree_view->priv->button_pressed_node = tree_view->priv->prelight_node;
2591               tree_view->priv->button_pressed_tree = tree_view->priv->prelight_tree;
2592               gtk_tree_view_draw_arrow (GTK_TREE_VIEW (widget),
2593                                         tree_view->priv->prelight_tree,
2594                                         tree_view->priv->prelight_node,
2595                                         event->x,
2596                                         event->y);
2597             }
2598
2599           grab_focus_and_unset_draw_keyfocus (tree_view);
2600           return TRUE;
2601         }
2602
2603       /* find the node that was clicked */
2604       new_y = TREE_WINDOW_Y_TO_RBTREE_Y(tree_view, event->y);
2605       if (new_y < 0)
2606         new_y = 0;
2607       y_offset = -_gtk_rbtree_find_offset (tree_view->priv->tree, new_y, &tree, &node);
2608
2609       if (node == NULL)
2610         {
2611           /* We clicked in dead space */
2612           grab_focus_and_unset_draw_keyfocus (tree_view);
2613           return TRUE;
2614         }
2615
2616       /* Get the path and the node */
2617       path = _gtk_tree_view_find_path (tree_view, tree, node);
2618       path_is_selectable = !row_is_separator (tree_view, NULL, path);
2619
2620       if (!path_is_selectable)
2621         {
2622           gtk_tree_path_free (path);
2623           grab_focus_and_unset_draw_keyfocus (tree_view);
2624           return TRUE;
2625         }
2626
2627       depth = gtk_tree_path_get_depth (path);
2628       background_area.y = y_offset + event->y;
2629       background_area.height = ROW_HEIGHT (tree_view, GTK_RBNODE_GET_HEIGHT (node));
2630       background_area.x = 0;
2631
2632
2633       /* Let the column have a chance at selecting it. */
2634       rtl = (gtk_widget_get_direction (GTK_WIDGET (tree_view)) == GTK_TEXT_DIR_RTL);
2635       for (list = (rtl ? g_list_last (tree_view->priv->columns) : g_list_first (tree_view->priv->columns));
2636            list; list = (rtl ? list->prev : list->next))
2637         {
2638           GtkTreeViewColumn *candidate = list->data;
2639
2640           if (!candidate->visible)
2641             continue;
2642
2643           background_area.width = candidate->width;
2644           if ((background_area.x > (gint) event->x) ||
2645               (background_area.x + background_area.width <= (gint) event->x))
2646             {
2647               background_area.x += background_area.width;
2648               continue;
2649             }
2650
2651           /* we found the focus column */
2652           column = candidate;
2653           cell_area = background_area;
2654           cell_area.width -= horizontal_separator;
2655           cell_area.height -= vertical_separator;
2656           cell_area.x += horizontal_separator/2;
2657           cell_area.y += vertical_separator/2;
2658           if (gtk_tree_view_is_expander_column (tree_view, column))
2659             {
2660               if (!rtl)
2661                 cell_area.x += (depth - 1) * tree_view->priv->level_indentation;
2662               cell_area.width -= (depth - 1) * tree_view->priv->level_indentation;
2663
2664               if (TREE_VIEW_DRAW_EXPANDERS (tree_view))
2665                 {
2666                   if (!rtl)
2667                     cell_area.x += depth * tree_view->priv->expander_size;
2668                   cell_area.width -= depth * tree_view->priv->expander_size;
2669                 }
2670             }
2671           break;
2672         }
2673
2674       if (column == NULL)
2675         {
2676           gtk_tree_path_free (path);
2677           grab_focus_and_unset_draw_keyfocus (tree_view);
2678           return FALSE;
2679         }
2680
2681       tree_view->priv->focus_column = column;
2682
2683       /* decide if we edit */
2684       if (event->type == GDK_BUTTON_PRESS && event->button == 1 &&
2685           !(event->state & gtk_accelerator_get_default_mod_mask ()))
2686         {
2687           GtkTreePath *anchor;
2688           GtkTreeIter iter;
2689
2690           gtk_tree_model_get_iter (tree_view->priv->model, &iter, path);
2691           gtk_tree_view_column_cell_set_cell_data (column,
2692                                                    tree_view->priv->model,
2693                                                    &iter,
2694                                                    GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_PARENT),
2695                                                    node->children?TRUE:FALSE);
2696
2697           if (tree_view->priv->anchor)
2698             anchor = gtk_tree_row_reference_get_path (tree_view->priv->anchor);
2699           else
2700             anchor = NULL;
2701
2702           if ((anchor && !gtk_tree_path_compare (anchor, path))
2703               || !_gtk_tree_view_column_has_editable_cell (column))
2704             {
2705               GtkCellEditable *cell_editable = NULL;
2706
2707               /* FIXME: get the right flags */
2708               guint flags = 0;
2709
2710               path_string = gtk_tree_path_to_string (path);
2711
2712               if (_gtk_tree_view_column_cell_event (column,
2713                                                     &cell_editable,
2714                                                     (GdkEvent *)event,
2715                                                     path_string,
2716                                                     &background_area,
2717                                                     &cell_area, flags))
2718                 {
2719                   if (cell_editable != NULL)
2720                     {
2721                       gint left, right;
2722                       GdkRectangle area;
2723
2724                       area = cell_area;
2725                       _gtk_tree_view_column_get_neighbor_sizes (column, _gtk_tree_view_column_get_edited_cell (column), &left, &right);
2726
2727                       area.x += left;
2728                       area.width -= right + left;
2729
2730                       gtk_tree_view_real_start_editing (tree_view,
2731                                                         column,
2732                                                         path,
2733                                                         cell_editable,
2734                                                         &area,
2735                                                         (GdkEvent *)event,
2736                                                         flags);
2737                       g_free (path_string);
2738                       gtk_tree_path_free (path);
2739                       gtk_tree_path_free (anchor);
2740                       return TRUE;
2741                     }
2742                   column_handled_click = TRUE;
2743                 }
2744               g_free (path_string);
2745             }
2746           if (anchor)
2747             gtk_tree_path_free (anchor);
2748         }
2749
2750       /* select */
2751       node_selected = GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_SELECTED);
2752       pre_val = tree_view->priv->vadjustment->value;
2753
2754       /* we only handle selection modifications on the first button press
2755        */
2756       if (event->type == GDK_BUTTON_PRESS)
2757         {
2758           if ((event->state & GDK_CONTROL_MASK) == GDK_CONTROL_MASK)
2759             tree_view->priv->ctrl_pressed = TRUE;
2760           if ((event->state & GDK_SHIFT_MASK) == GDK_SHIFT_MASK)
2761             tree_view->priv->shift_pressed = TRUE;
2762
2763           focus_cell = _gtk_tree_view_column_get_cell_at_pos (column, event->x - background_area.x);
2764           if (focus_cell)
2765             gtk_tree_view_column_focus_cell (column, focus_cell);
2766
2767           if (event->state & GDK_CONTROL_MASK)
2768             {
2769               gtk_tree_view_real_set_cursor (tree_view, path, FALSE, TRUE);
2770               gtk_tree_view_real_toggle_cursor_row (tree_view);
2771             }
2772           else if (event->state & GDK_SHIFT_MASK)
2773             {
2774               gtk_tree_view_real_set_cursor (tree_view, path, FALSE, TRUE);
2775               gtk_tree_view_real_select_cursor_row (tree_view, FALSE);
2776             }
2777           else
2778             {
2779               gtk_tree_view_real_set_cursor (tree_view, path, TRUE, TRUE);
2780             }
2781
2782           tree_view->priv->ctrl_pressed = FALSE;
2783           tree_view->priv->shift_pressed = FALSE;
2784         }
2785
2786       /* the treeview may have been scrolled because of _set_cursor,
2787        * correct here
2788        */
2789
2790       aft_val = tree_view->priv->vadjustment->value;
2791       dval = pre_val - aft_val;
2792
2793       cell_area.y += dval;
2794       background_area.y += dval;
2795
2796       /* Save press to possibly begin a drag
2797        */
2798       if (!column_handled_click &&
2799           !tree_view->priv->in_grab &&
2800           tree_view->priv->pressed_button < 0)
2801         {
2802           tree_view->priv->pressed_button = event->button;
2803           tree_view->priv->press_start_x = event->x;
2804           tree_view->priv->press_start_y = event->y;
2805
2806           if (tree_view->priv->rubber_banding_enable
2807               && !node_selected
2808               && tree_view->priv->selection->type == GTK_SELECTION_MULTIPLE)
2809             {
2810               tree_view->priv->press_start_y += tree_view->priv->dy;
2811               tree_view->priv->rubber_band_x = event->x;
2812               tree_view->priv->rubber_band_y = event->y + tree_view->priv->dy;
2813               tree_view->priv->rubber_band_status = RUBBER_BAND_MAYBE_START;
2814
2815               if ((event->state & GDK_CONTROL_MASK) == GDK_CONTROL_MASK)
2816                 tree_view->priv->rubber_band_ctrl = TRUE;
2817               if ((event->state & GDK_SHIFT_MASK) == GDK_SHIFT_MASK)
2818                 tree_view->priv->rubber_band_shift = TRUE;
2819             }
2820         }
2821
2822       /* Test if a double click happened on the same row. */
2823       if (event->button == 1 && event->type == GDK_BUTTON_PRESS)
2824         {
2825           int double_click_time, double_click_distance;
2826
2827           g_object_get (gtk_settings_get_default (),
2828                         "gtk-double-click-time", &double_click_time,
2829                         "gtk-double-click-distance", &double_click_distance,
2830                         NULL);
2831
2832           /* Same conditions as _gdk_event_button_generate */
2833           if (tree_view->priv->last_button_x != -1 &&
2834               (event->time < tree_view->priv->last_button_time + double_click_time) &&
2835               (ABS (event->x - tree_view->priv->last_button_x) <= double_click_distance) &&
2836               (ABS (event->y - tree_view->priv->last_button_y) <= double_click_distance))
2837             {
2838               /* We do no longer compare paths of this row and the
2839                * row clicked previously.  We use the double click
2840                * distance to decide whether this is a valid click,
2841                * allowing the mouse to slightly move over another row.
2842                */
2843               row_double_click = TRUE;
2844
2845               tree_view->priv->last_button_time = 0;
2846               tree_view->priv->last_button_x = -1;
2847               tree_view->priv->last_button_y = -1;
2848             }
2849           else
2850             {
2851               tree_view->priv->last_button_time = event->time;
2852               tree_view->priv->last_button_x = event->x;
2853               tree_view->priv->last_button_y = event->y;
2854             }
2855         }
2856
2857       if (row_double_click)
2858         {
2859           gtk_grab_remove (widget);
2860           gtk_tree_view_row_activated (tree_view, path, column);
2861
2862           if (tree_view->priv->pressed_button == event->button)
2863             tree_view->priv->pressed_button = -1;
2864         }
2865
2866       gtk_tree_path_free (path);
2867
2868       /* If we activated the row through a double click we don't want to grab
2869        * focus back, as moving focus to another widget is pretty common.
2870        */
2871       if (!row_double_click)
2872         grab_focus_and_unset_draw_keyfocus (tree_view);
2873
2874       return TRUE;
2875     }
2876
2877   /* We didn't click in the window.  Let's check to see if we clicked on a column resize window.
2878    */
2879   for (i = 0, list = tree_view->priv->columns; list; list = list->next, i++)
2880     {
2881       column = list->data;
2882       if (event->window == column->window &&
2883           column->resizable &&
2884           column->window)
2885         {
2886           gpointer drag_data;
2887
2888           if (event->type == GDK_2BUTTON_PRESS &&
2889               gtk_tree_view_column_get_sizing (column) != GTK_TREE_VIEW_COLUMN_AUTOSIZE)
2890             {
2891               column->use_resized_width = FALSE;
2892               _gtk_tree_view_column_autosize (tree_view, column);
2893               return TRUE;
2894             }
2895
2896           if (gdk_pointer_grab (column->window, FALSE,
2897                                 GDK_POINTER_MOTION_HINT_MASK |
2898                                 GDK_BUTTON1_MOTION_MASK |
2899                                 GDK_BUTTON_RELEASE_MASK,
2900                                 NULL, NULL, event->time))
2901             return FALSE;
2902
2903           gtk_grab_add (widget);
2904           GTK_TREE_VIEW_SET_FLAG (tree_view, GTK_TREE_VIEW_IN_COLUMN_RESIZE);
2905           column->resized_width = column->width - tree_view->priv->last_extra_space_per_column;
2906
2907           /* block attached dnd signal handler */
2908           drag_data = g_object_get_data (G_OBJECT (widget), "gtk-site-data");
2909           if (drag_data)
2910             g_signal_handlers_block_matched (widget,
2911                                              G_SIGNAL_MATCH_DATA,
2912                                              0, 0, NULL, NULL,
2913                                              drag_data);
2914
2915           tree_view->priv->drag_pos = i;
2916           tree_view->priv->x_drag = column->button->allocation.x + (rtl ? 0 : column->button->allocation.width);
2917
2918           if (!gtk_widget_has_focus (widget))
2919             gtk_widget_grab_focus (widget);
2920
2921           return TRUE;
2922         }
2923     }
2924   return FALSE;
2925 }
2926
2927 /* GtkWidget::button_release_event helper */
2928 static gboolean
2929 gtk_tree_view_button_release_drag_column (GtkWidget      *widget,
2930                                           GdkEventButton *event)
2931 {
2932   GtkTreeView *tree_view;
2933   GList *l;
2934   gboolean rtl;
2935
2936   tree_view = GTK_TREE_VIEW (widget);
2937
2938   rtl = (gtk_widget_get_direction (widget) == GTK_TEXT_DIR_RTL);
2939   gdk_display_pointer_ungrab (gtk_widget_get_display (widget), GDK_CURRENT_TIME);
2940   gdk_display_keyboard_ungrab (gtk_widget_get_display (widget), GDK_CURRENT_TIME);
2941
2942   /* Move the button back */
2943   g_object_ref (tree_view->priv->drag_column->button);
2944   gtk_container_remove (GTK_CONTAINER (tree_view), tree_view->priv->drag_column->button);
2945   gtk_widget_set_parent_window (tree_view->priv->drag_column->button, tree_view->priv->header_window);
2946   gtk_widget_set_parent (tree_view->priv->drag_column->button, GTK_WIDGET (tree_view));
2947   g_object_unref (tree_view->priv->drag_column->button);
2948   gtk_widget_queue_resize (widget);
2949   if (tree_view->priv->drag_column->resizable)
2950     {
2951       gdk_window_raise (tree_view->priv->drag_column->window);
2952       gdk_window_show (tree_view->priv->drag_column->window);
2953     }
2954   else
2955     gdk_window_hide (tree_view->priv->drag_column->window);
2956
2957   gtk_widget_grab_focus (tree_view->priv->drag_column->button);
2958
2959   if (rtl)
2960     {
2961       if (tree_view->priv->cur_reorder &&
2962           tree_view->priv->cur_reorder->right_column != tree_view->priv->drag_column)
2963         gtk_tree_view_move_column_after (tree_view, tree_view->priv->drag_column,
2964                                          tree_view->priv->cur_reorder->right_column);
2965     }
2966   else
2967     {
2968       if (tree_view->priv->cur_reorder &&
2969           tree_view->priv->cur_reorder->left_column != tree_view->priv->drag_column)
2970         gtk_tree_view_move_column_after (tree_view, tree_view->priv->drag_column,
2971                                          tree_view->priv->cur_reorder->left_column);
2972     }
2973   tree_view->priv->drag_column = NULL;
2974   gdk_window_hide (tree_view->priv->drag_window);
2975
2976   for (l = tree_view->priv->column_drag_info; l != NULL; l = l->next)
2977     g_slice_free (GtkTreeViewColumnReorder, l->data);
2978   g_list_free (tree_view->priv->column_drag_info);
2979   tree_view->priv->column_drag_info = NULL;
2980   tree_view->priv->cur_reorder = NULL;
2981
2982   if (tree_view->priv->drag_highlight_window)
2983     gdk_window_hide (tree_view->priv->drag_highlight_window);
2984
2985   /* Reset our flags */
2986   tree_view->priv->drag_column_window_state = DRAG_COLUMN_WINDOW_STATE_UNSET;
2987   GTK_TREE_VIEW_UNSET_FLAG (tree_view, GTK_TREE_VIEW_IN_COLUMN_DRAG);
2988
2989   return TRUE;
2990 }
2991
2992 /* GtkWidget::button_release_event helper */
2993 static gboolean
2994 gtk_tree_view_button_release_column_resize (GtkWidget      *widget,
2995                                             GdkEventButton *event)
2996 {
2997   GtkTreeView *tree_view;
2998   gpointer drag_data;
2999
3000   tree_view = GTK_TREE_VIEW (widget);
3001
3002   tree_view->priv->drag_pos = -1;
3003
3004   /* unblock attached dnd signal handler */
3005   drag_data = g_object_get_data (G_OBJECT (widget), "gtk-site-data");
3006   if (drag_data)
3007     g_signal_handlers_unblock_matched (widget,
3008                                        G_SIGNAL_MATCH_DATA,
3009                                        0, 0, NULL, NULL,
3010                                        drag_data);
3011
3012   GTK_TREE_VIEW_UNSET_FLAG (tree_view, GTK_TREE_VIEW_IN_COLUMN_RESIZE);
3013   gtk_grab_remove (widget);
3014   gdk_display_pointer_ungrab (gdk_drawable_get_display (event->window),
3015                               event->time);
3016   return TRUE;
3017 }
3018
3019 static gboolean
3020 gtk_tree_view_button_release (GtkWidget      *widget,
3021                               GdkEventButton *event)
3022 {
3023   GtkTreeView *tree_view = GTK_TREE_VIEW (widget);
3024
3025   if (GTK_TREE_VIEW_FLAG_SET (tree_view, GTK_TREE_VIEW_IN_COLUMN_DRAG))
3026     return gtk_tree_view_button_release_drag_column (widget, event);
3027
3028   if (tree_view->priv->rubber_band_status)
3029     gtk_tree_view_stop_rubber_band (tree_view);
3030
3031   if (tree_view->priv->pressed_button == event->button)
3032     tree_view->priv->pressed_button = -1;
3033
3034   if (GTK_TREE_VIEW_FLAG_SET (tree_view, GTK_TREE_VIEW_IN_COLUMN_RESIZE))
3035     return gtk_tree_view_button_release_column_resize (widget, event);
3036
3037   if (tree_view->priv->button_pressed_node == NULL)
3038     return FALSE;
3039
3040   if (event->button == 1)
3041     {
3042       gtk_grab_remove (widget);
3043       if (tree_view->priv->button_pressed_node == tree_view->priv->prelight_node &&
3044           GTK_TREE_VIEW_FLAG_SET (tree_view, GTK_TREE_VIEW_ARROW_PRELIT))
3045         {
3046           GtkTreePath *path = NULL;
3047
3048           path = _gtk_tree_view_find_path (tree_view,
3049                                            tree_view->priv->button_pressed_tree,
3050                                            tree_view->priv->button_pressed_node);
3051           /* Actually activate the node */
3052           if (tree_view->priv->button_pressed_node->children == NULL)
3053             gtk_tree_view_real_expand_row (tree_view, path,
3054                                            tree_view->priv->button_pressed_tree,
3055                                            tree_view->priv->button_pressed_node,
3056                                            FALSE, TRUE);
3057           else
3058             gtk_tree_view_real_collapse_row (GTK_TREE_VIEW (widget), path,
3059                                              tree_view->priv->button_pressed_tree,
3060                                              tree_view->priv->button_pressed_node, TRUE);
3061           gtk_tree_path_free (path);
3062         }
3063
3064       tree_view->priv->button_pressed_tree = NULL;
3065       tree_view->priv->button_pressed_node = NULL;
3066     }
3067
3068   return TRUE;
3069 }
3070
3071 static gboolean
3072 gtk_tree_view_grab_broken (GtkWidget          *widget,
3073                            GdkEventGrabBroken *event)
3074 {
3075   GtkTreeView *tree_view = GTK_TREE_VIEW (widget);
3076
3077   if (GTK_TREE_VIEW_FLAG_SET (tree_view, GTK_TREE_VIEW_IN_COLUMN_DRAG))
3078     gtk_tree_view_button_release_drag_column (widget, (GdkEventButton *)event);
3079
3080   if (GTK_TREE_VIEW_FLAG_SET (tree_view, GTK_TREE_VIEW_IN_COLUMN_RESIZE))
3081     gtk_tree_view_button_release_column_resize (widget, (GdkEventButton *)event);
3082
3083   return TRUE;
3084 }
3085
3086 #if 0
3087 static gboolean
3088 gtk_tree_view_configure (GtkWidget *widget,
3089                          GdkEventConfigure *event)
3090 {
3091   GtkTreeView *tree_view;
3092
3093   tree_view = GTK_TREE_VIEW (widget);
3094   tree_view->priv->search_position_func (tree_view, tree_view->priv->search_window);
3095
3096   return FALSE;
3097 }
3098 #endif
3099
3100 /* GtkWidget::motion_event function set.
3101  */
3102
3103 static gboolean
3104 coords_are_over_arrow (GtkTreeView *tree_view,
3105                        GtkRBTree   *tree,
3106                        GtkRBNode   *node,
3107                        /* these are in bin window coords */
3108                        gint         x,
3109                        gint         y)
3110 {
3111   GdkRectangle arrow;
3112   gint x2;
3113
3114   if (!gtk_widget_get_realized (GTK_WIDGET (tree_view)))
3115     return FALSE;
3116
3117   if ((node->flags & GTK_RBNODE_IS_PARENT) == 0)
3118     return FALSE;
3119
3120   arrow.y = BACKGROUND_FIRST_PIXEL (tree_view, tree, node);
3121
3122   arrow.height = ROW_HEIGHT (tree_view, BACKGROUND_HEIGHT (node));
3123
3124   gtk_tree_view_get_arrow_xrange (tree_view, tree, &arrow.x, &x2);
3125
3126   arrow.width = x2 - arrow.x;
3127
3128   return (x >= arrow.x &&
3129           x < (arrow.x + arrow.width) &&
3130           y >= arrow.y &&
3131           y < (arrow.y + arrow.height));
3132 }
3133
3134 static gboolean
3135 auto_expand_timeout (gpointer data)
3136 {
3137   GtkTreeView *tree_view = GTK_TREE_VIEW (data);
3138   GtkTreePath *path;
3139
3140   if (tree_view->priv->prelight_node)
3141     {
3142       path = _gtk_tree_view_find_path (tree_view,
3143                                        tree_view->priv->prelight_tree,
3144                                        tree_view->priv->prelight_node);
3145
3146       if (tree_view->priv->prelight_node->children)
3147         gtk_tree_view_collapse_row (tree_view, path);
3148       else
3149         gtk_tree_view_expand_row (tree_view, path, FALSE);
3150
3151       gtk_tree_path_free (path);
3152     }
3153
3154   tree_view->priv->auto_expand_timeout = 0;
3155
3156   return FALSE;
3157 }
3158
3159 static void
3160 remove_auto_expand_timeout (GtkTreeView *tree_view)
3161 {
3162   if (tree_view->priv->auto_expand_timeout != 0)
3163     {
3164       g_source_remove (tree_view->priv->auto_expand_timeout);
3165       tree_view->priv->auto_expand_timeout = 0;
3166     }
3167 }
3168
3169 static void
3170 do_prelight (GtkTreeView *tree_view,
3171              GtkRBTree   *tree,
3172              GtkRBNode   *node,
3173              /* these are in bin_window coords */
3174              gint         x,
3175              gint         y)
3176 {
3177   if (tree_view->priv->prelight_tree == tree &&
3178       tree_view->priv->prelight_node == node)
3179     {
3180       /*  We are still on the same node,
3181           but we might need to take care of the arrow  */
3182
3183       if (tree && node && TREE_VIEW_DRAW_EXPANDERS (tree_view))
3184         {
3185           gboolean over_arrow;
3186           gboolean flag_set;
3187
3188           over_arrow = coords_are_over_arrow (tree_view, tree, node, x, y);
3189           flag_set = GTK_TREE_VIEW_FLAG_SET (tree_view,
3190                                              GTK_TREE_VIEW_ARROW_PRELIT);
3191
3192           if (over_arrow != flag_set)
3193             {
3194               if (over_arrow)
3195                 GTK_TREE_VIEW_SET_FLAG (tree_view,
3196                                         GTK_TREE_VIEW_ARROW_PRELIT);
3197               else
3198                 GTK_TREE_VIEW_UNSET_FLAG (tree_view,
3199                                           GTK_TREE_VIEW_ARROW_PRELIT);
3200
3201               gtk_tree_view_draw_arrow (tree_view, tree, node, x, y);
3202             }
3203         }
3204
3205       return;
3206     }
3207
3208   if (tree_view->priv->prelight_tree && tree_view->priv->prelight_node)
3209     {
3210       /*  Unprelight the old node and arrow  */
3211
3212       GTK_RBNODE_UNSET_FLAG (tree_view->priv->prelight_node,
3213                              GTK_RBNODE_IS_PRELIT);
3214
3215       if (GTK_TREE_VIEW_FLAG_SET (tree_view, GTK_TREE_VIEW_ARROW_PRELIT)
3216           && TREE_VIEW_DRAW_EXPANDERS (tree_view))
3217         {
3218           GTK_TREE_VIEW_UNSET_FLAG (tree_view, GTK_TREE_VIEW_ARROW_PRELIT);
3219
3220           gtk_tree_view_draw_arrow (tree_view,
3221                                     tree_view->priv->prelight_tree,
3222                                     tree_view->priv->prelight_node,
3223                                     x,
3224                                     y);
3225         }
3226
3227       _gtk_tree_view_queue_draw_node (tree_view,
3228                                       tree_view->priv->prelight_tree,
3229                                       tree_view->priv->prelight_node,
3230                                       NULL);
3231     }
3232
3233
3234   if (tree_view->priv->hover_expand)
3235     remove_auto_expand_timeout (tree_view);
3236
3237   /*  Set the new prelight values  */
3238   tree_view->priv->prelight_node = node;
3239   tree_view->priv->prelight_tree = tree;
3240
3241   if (!node || !tree)
3242     return;
3243
3244   /*  Prelight the new node and arrow  */
3245
3246   if (TREE_VIEW_DRAW_EXPANDERS (tree_view)
3247       && coords_are_over_arrow (tree_view, tree, node, x, y))
3248     {
3249       GTK_TREE_VIEW_SET_FLAG (tree_view, GTK_TREE_VIEW_ARROW_PRELIT);
3250
3251       gtk_tree_view_draw_arrow (tree_view, tree, node, x, y);
3252     }
3253
3254   GTK_RBNODE_SET_FLAG (node, GTK_RBNODE_IS_PRELIT);
3255
3256   _gtk_tree_view_queue_draw_node (tree_view, tree, node, NULL);
3257
3258   if (tree_view->priv->hover_expand)
3259     {
3260       tree_view->priv->auto_expand_timeout =
3261         gdk_threads_add_timeout (AUTO_EXPAND_TIMEOUT, auto_expand_timeout, tree_view);
3262     }
3263 }
3264
3265 static void
3266 prelight_or_select (GtkTreeView *tree_view,
3267                     GtkRBTree   *tree,
3268                     GtkRBNode   *node,
3269                     /* these are in bin_window coords */
3270                     gint         x,
3271                     gint         y)
3272 {
3273   GtkSelectionMode mode = gtk_tree_selection_get_mode (tree_view->priv->selection);
3274
3275   if (tree_view->priv->hover_selection &&
3276       (mode == GTK_SELECTION_SINGLE || mode == GTK_SELECTION_BROWSE) &&
3277       !(tree_view->priv->edited_column &&
3278         tree_view->priv->edited_column->editable_widget))
3279     {
3280       if (node)
3281         {
3282           if (!GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_SELECTED))
3283             {
3284               GtkTreePath *path;
3285
3286               path = _gtk_tree_view_find_path (tree_view, tree, node);
3287               gtk_tree_selection_select_path (tree_view->priv->selection, path);
3288               if (GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_SELECTED))
3289                 {
3290                   GTK_TREE_VIEW_UNSET_FLAG (tree_view, GTK_TREE_VIEW_DRAW_KEYFOCUS);
3291                   gtk_tree_view_real_set_cursor (tree_view, path, FALSE, FALSE);
3292                 }
3293               gtk_tree_path_free (path);
3294             }
3295         }
3296
3297       else if (mode == GTK_SELECTION_SINGLE)
3298         gtk_tree_selection_unselect_all (tree_view->priv->selection);
3299     }
3300
3301     do_prelight (tree_view, tree, node, x, y);
3302 }
3303
3304 static void
3305 ensure_unprelighted (GtkTreeView *tree_view)
3306 {
3307   do_prelight (tree_view,
3308                NULL, NULL,
3309                -1000, -1000); /* coords not possibly over an arrow */
3310
3311   g_assert (tree_view->priv->prelight_node == NULL);
3312 }
3313
3314 static void
3315 update_prelight (GtkTreeView *tree_view,
3316                  gint         x,
3317                  gint         y)
3318 {
3319   int new_y;
3320   GtkRBTree *tree;
3321   GtkRBNode *node;
3322
3323   if (tree_view->priv->tree == NULL)
3324     return;
3325
3326   if (x == -10000)
3327     {
3328       ensure_unprelighted (tree_view);
3329       return;
3330     }
3331
3332   new_y = TREE_WINDOW_Y_TO_RBTREE_Y (tree_view, y);
3333   if (new_y < 0)
3334     new_y = 0;
3335
3336   _gtk_rbtree_find_offset (tree_view->priv->tree,
3337                            new_y, &tree, &node);
3338
3339   if (node)
3340     prelight_or_select (tree_view, tree, node, x, y);
3341 }
3342
3343
3344
3345
3346 /* Our motion arrow is either a box (in the case of the original spot)
3347  * or an arrow.  It is expander_size wide.
3348  */
3349 /*
3350  * 11111111111111
3351  * 01111111111110
3352  * 00111111111100
3353  * 00011111111000
3354  * 00001111110000
3355  * 00000111100000
3356  * 00000111100000
3357  * 00000111100000
3358  * ~ ~ ~ ~ ~ ~ ~
3359  * 00000111100000
3360  * 00000111100000
3361  * 00000111100000
3362  * 00001111110000
3363  * 00011111111000
3364  * 00111111111100
3365  * 01111111111110
3366  * 11111111111111
3367  */
3368
3369 static void
3370 gtk_tree_view_motion_draw_column_motion_arrow (GtkTreeView *tree_view)
3371 {
3372   GtkTreeViewColumnReorder *reorder = tree_view->priv->cur_reorder;
3373   GtkWidget *widget = GTK_WIDGET (tree_view);
3374   GdkBitmap *mask = NULL;
3375   gint x;
3376   gint y;
3377   gint width;
3378   gint height;
3379   gint arrow_type = DRAG_COLUMN_WINDOW_STATE_UNSET;
3380   GdkWindowAttr attributes;
3381   guint attributes_mask;
3382
3383   if (!reorder ||
3384       reorder->left_column == tree_view->priv->drag_column ||
3385       reorder->right_column == tree_view->priv->drag_column)
3386     arrow_type = DRAG_COLUMN_WINDOW_STATE_ORIGINAL;
3387   else if (reorder->left_column || reorder->right_column)
3388     {
3389       GdkRectangle visible_rect;
3390       gtk_tree_view_get_visible_rect (tree_view, &visible_rect);
3391       if (reorder->left_column)
3392         x = reorder->left_column->button->allocation.x + reorder->left_column->button->allocation.width;
3393       else
3394         x = reorder->right_column->button->allocation.x;
3395
3396       if (x < visible_rect.x)
3397         arrow_type = DRAG_COLUMN_WINDOW_STATE_ARROW_LEFT;
3398       else if (x > visible_rect.x + visible_rect.width)
3399         arrow_type = DRAG_COLUMN_WINDOW_STATE_ARROW_RIGHT;
3400       else
3401         arrow_type = DRAG_COLUMN_WINDOW_STATE_ARROW;
3402     }
3403
3404   /* We want to draw the rectangle over the initial location. */
3405   if (arrow_type == DRAG_COLUMN_WINDOW_STATE_ORIGINAL)
3406     {
3407       GdkGC *gc;
3408       GdkColor col;
3409
3410       if (tree_view->priv->drag_column_window_state != DRAG_COLUMN_WINDOW_STATE_ORIGINAL)
3411         {
3412           if (tree_view->priv->drag_highlight_window)
3413             {
3414               gdk_window_set_user_data (tree_view->priv->drag_highlight_window,
3415                                         NULL);
3416               gdk_window_destroy (tree_view->priv->drag_highlight_window);
3417             }
3418
3419           attributes.window_type = GDK_WINDOW_CHILD;
3420           attributes.wclass = GDK_INPUT_OUTPUT;
3421           attributes.x = tree_view->priv->drag_column_x;
3422           attributes.y = 0;
3423           width = attributes.width = tree_view->priv->drag_column->button->allocation.width;
3424           height = attributes.height = tree_view->priv->drag_column->button->allocation.height;
3425           attributes.visual = gtk_widget_get_visual (GTK_WIDGET (tree_view));
3426           attributes.colormap = gtk_widget_get_colormap (GTK_WIDGET (tree_view));
3427           attributes.event_mask = GDK_VISIBILITY_NOTIFY_MASK | GDK_EXPOSURE_MASK | GDK_POINTER_MOTION_MASK;
3428           attributes_mask = GDK_WA_X | GDK_WA_Y | GDK_WA_VISUAL | GDK_WA_COLORMAP;
3429           tree_view->priv->drag_highlight_window = gdk_window_new (tree_view->priv->header_window, &attributes, attributes_mask);
3430           gdk_window_set_user_data (tree_view->priv->drag_highlight_window, GTK_WIDGET (tree_view));
3431
3432           mask = gdk_pixmap_new (tree_view->priv->drag_highlight_window, width, height, 1);
3433           gc = gdk_gc_new (mask);
3434           col.pixel = 1;
3435           gdk_gc_set_foreground (gc, &col);
3436           gdk_draw_rectangle (mask, gc, TRUE, 0, 0, width, height);
3437           col.pixel = 0;
3438           gdk_gc_set_foreground(gc, &col);
3439           gdk_draw_rectangle (mask, gc, TRUE, 2, 2, width - 4, height - 4);
3440           g_object_unref (gc);
3441
3442           gdk_window_shape_combine_mask (tree_view->priv->drag_highlight_window,
3443                                          mask, 0, 0);
3444           if (mask) g_object_unref (mask);
3445           tree_view->priv->drag_column_window_state = DRAG_COLUMN_WINDOW_STATE_ORIGINAL;
3446         }
3447     }
3448   else if (arrow_type == DRAG_COLUMN_WINDOW_STATE_ARROW)
3449     {
3450       gint i, j = 1;
3451       GdkGC *gc;
3452       GdkColor col;
3453
3454       width = tree_view->priv->expander_size;
3455
3456       /* Get x, y, width, height of arrow */
3457       gdk_window_get_origin (tree_view->priv->header_window, &x, &y);
3458       if (reorder->left_column)
3459         {
3460           x += reorder->left_column->button->allocation.x + reorder->left_column->button->allocation.width - width/2;
3461           height = reorder->left_column->button->allocation.height;
3462         }
3463       else
3464         {
3465           x += reorder->right_column->button->allocation.x - width/2;
3466           height = reorder->right_column->button->allocation.height;
3467         }
3468       y -= tree_view->priv->expander_size/2; /* The arrow takes up only half the space */
3469       height += tree_view->priv->expander_size;
3470
3471       /* Create the new window */
3472       if (tree_view->priv->drag_column_window_state != DRAG_COLUMN_WINDOW_STATE_ARROW)
3473         {
3474           if (tree_view->priv->drag_highlight_window)
3475             {
3476               gdk_window_set_user_data (tree_view->priv->drag_highlight_window,
3477                                         NULL);
3478               gdk_window_destroy (tree_view->priv->drag_highlight_window);
3479             }
3480
3481           attributes.window_type = GDK_WINDOW_TEMP;
3482           attributes.wclass = GDK_INPUT_OUTPUT;
3483           attributes.visual = gtk_widget_get_visual (GTK_WIDGET (tree_view));
3484           attributes.colormap = gtk_widget_get_colormap (GTK_WIDGET (tree_view));
3485           attributes.event_mask = GDK_VISIBILITY_NOTIFY_MASK | GDK_EXPOSURE_MASK | GDK_POINTER_MOTION_MASK;
3486           attributes_mask = GDK_WA_X | GDK_WA_Y | GDK_WA_VISUAL | GDK_WA_COLORMAP;
3487           attributes.x = x;
3488           attributes.y = y;
3489           attributes.width = width;
3490           attributes.height = height;
3491           tree_view->priv->drag_highlight_window = gdk_window_new (gtk_widget_get_root_window (widget),
3492                                                                    &attributes, attributes_mask);
3493           gdk_window_set_user_data (tree_view->priv->drag_highlight_window, GTK_WIDGET (tree_view));
3494
3495           mask = gdk_pixmap_new (tree_view->priv->drag_highlight_window, width, height, 1);
3496           gc = gdk_gc_new (mask);
3497           col.pixel = 1;
3498           gdk_gc_set_foreground (gc, &col);
3499           gdk_draw_rectangle (mask, gc, TRUE, 0, 0, width, height);
3500
3501           /* Draw the 2 arrows as per above */
3502           col.pixel = 0;
3503           gdk_gc_set_foreground (gc, &col);
3504           for (i = 0; i < width; i ++)
3505             {
3506               if (i == (width/2 - 1))
3507                 continue;
3508               gdk_draw_line (mask, gc, i, j, i, height - j);
3509               if (i < (width/2 - 1))
3510                 j++;
3511               else
3512                 j--;
3513             }
3514           g_object_unref (gc);
3515           gdk_window_shape_combine_mask (tree_view->priv->drag_highlight_window,
3516                                          mask, 0, 0);
3517           if (mask) g_object_unref (mask);
3518         }
3519
3520       tree_view->priv->drag_column_window_state = DRAG_COLUMN_WINDOW_STATE_ARROW;
3521       gdk_window_move (tree_view->priv->drag_highlight_window, x, y);
3522     }
3523   else if (arrow_type == DRAG_COLUMN_WINDOW_STATE_ARROW_LEFT ||
3524            arrow_type == DRAG_COLUMN_WINDOW_STATE_ARROW_RIGHT)
3525     {
3526       gint i, j = 1;
3527       GdkGC *gc;
3528       GdkColor col;
3529
3530       width = tree_view->priv->expander_size;
3531
3532       /* Get x, y, width, height of arrow */
3533       width = width/2; /* remember, the arrow only takes half the available width */
3534       gdk_window_get_origin (widget->window, &x, &y);
3535       if (arrow_type == DRAG_COLUMN_WINDOW_STATE_ARROW_RIGHT)
3536         x += widget->allocation.width - width;
3537
3538       if (reorder->left_column)
3539         height = reorder->left_column->button->allocation.height;
3540       else
3541         height = reorder->right_column->button->allocation.height;
3542
3543       y -= tree_view->priv->expander_size;
3544       height += 2*tree_view->priv->expander_size;
3545
3546       /* Create the new window */
3547       if (tree_view->priv->drag_column_window_state != DRAG_COLUMN_WINDOW_STATE_ARROW_LEFT &&
3548           tree_view->priv->drag_column_window_state != DRAG_COLUMN_WINDOW_STATE_ARROW_RIGHT)
3549         {
3550           if (tree_view->priv->drag_highlight_window)
3551             {
3552               gdk_window_set_user_data (tree_view->priv->drag_highlight_window,
3553                                         NULL);
3554               gdk_window_destroy (tree_view->priv->drag_highlight_window);
3555             }
3556
3557           attributes.window_type = GDK_WINDOW_TEMP;
3558           attributes.wclass = GDK_INPUT_OUTPUT;
3559           attributes.visual = gtk_widget_get_visual (GTK_WIDGET (tree_view));
3560           attributes.colormap = gtk_widget_get_colormap (GTK_WIDGET (tree_view));
3561           attributes.event_mask = GDK_VISIBILITY_NOTIFY_MASK | GDK_EXPOSURE_MASK | GDK_POINTER_MOTION_MASK;
3562           attributes_mask = GDK_WA_X | GDK_WA_Y | GDK_WA_VISUAL | GDK_WA_COLORMAP;
3563           attributes.x = x;
3564           attributes.y = y;
3565           attributes.width = width;
3566           attributes.height = height;
3567           tree_view->priv->drag_highlight_window = gdk_window_new (NULL, &attributes, attributes_mask);
3568           gdk_window_set_user_data (tree_view->priv->drag_highlight_window, GTK_WIDGET (tree_view));
3569
3570           mask = gdk_pixmap_new (tree_view->priv->drag_highlight_window, width, height, 1);
3571           gc = gdk_gc_new (mask);
3572           col.pixel = 1;
3573           gdk_gc_set_foreground (gc, &col);
3574           gdk_draw_rectangle (mask, gc, TRUE, 0, 0, width, height);
3575
3576           /* Draw the 2 arrows as per above */
3577           col.pixel = 0;
3578           gdk_gc_set_foreground (gc, &col);
3579           j = tree_view->priv->expander_size;
3580           for (i = 0; i < width; i ++)
3581             {
3582               gint k;
3583               if (arrow_type == DRAG_COLUMN_WINDOW_STATE_ARROW_LEFT)
3584                 k = width - i - 1;
3585               else
3586                 k = i;
3587               gdk_draw_line (mask, gc, k, j, k, height - j);
3588               gdk_draw_line (mask, gc, k, 0, k, tree_view->priv->expander_size - j);
3589               gdk_draw_line (mask, gc, k, height, k, height - tree_view->priv->expander_size + j);
3590               j--;
3591             }
3592           g_object_unref (gc);
3593           gdk_window_shape_combine_mask (tree_view->priv->drag_highlight_window,
3594                                          mask, 0, 0);
3595           if (mask) g_object_unref (mask);
3596         }
3597
3598       tree_view->priv->drag_column_window_state = arrow_type;
3599       gdk_window_move (tree_view->priv->drag_highlight_window, x, y);
3600    }
3601   else
3602     {
3603       g_warning (G_STRLOC"Invalid GtkTreeViewColumnReorder struct");
3604       gdk_window_hide (tree_view->priv->drag_highlight_window);
3605       return;
3606     }
3607
3608   gdk_window_show (tree_view->priv->drag_highlight_window);
3609   gdk_window_raise (tree_view->priv->drag_highlight_window);
3610 }
3611
3612 static gboolean
3613 gtk_tree_view_motion_resize_column (GtkWidget      *widget,
3614                                     GdkEventMotion *event)
3615 {
3616   gint x;
3617   gint new_width;
3618   GtkTreeViewColumn *column;
3619   GtkTreeView *tree_view = GTK_TREE_VIEW (widget);
3620
3621   column = gtk_tree_view_get_column (tree_view, tree_view->priv->drag_pos);
3622
3623   if (event->is_hint || event->window != widget->window)
3624     gtk_widget_get_pointer (widget, &x, NULL);
3625   else
3626     x = event->x;
3627
3628   if (tree_view->priv->hadjustment)
3629     x += tree_view->priv->hadjustment->value;
3630
3631   new_width = gtk_tree_view_new_column_width (tree_view,
3632                                               tree_view->priv->drag_pos, &x);
3633   if (x != tree_view->priv->x_drag &&
3634       (new_width != column->fixed_width))
3635     {
3636       column->use_resized_width = TRUE;
3637       column->resized_width = new_width;
3638       if (column->expand)
3639         column->resized_width -= tree_view->priv->last_extra_space_per_column;
3640       gtk_widget_queue_resize (widget);
3641     }
3642
3643   return FALSE;
3644 }
3645
3646
3647 static void
3648 gtk_tree_view_update_current_reorder (GtkTreeView *tree_view)
3649 {
3650   GtkTreeViewColumnReorder *reorder = NULL;
3651   GList *list;
3652   gint mouse_x;
3653
3654   gdk_window_get_pointer (tree_view->priv->header_window, &mouse_x, NULL, NULL);
3655   for (list = tree_view->priv->column_drag_info; list; list = list->next)
3656     {
3657       reorder = (GtkTreeViewColumnReorder *) list->data;
3658       if (mouse_x >= reorder->left_align && mouse_x < reorder->right_align)
3659         break;
3660       reorder = NULL;
3661     }
3662
3663   /*  if (reorder && reorder == tree_view->priv->cur_reorder)
3664       return;*/
3665
3666   tree_view->priv->cur_reorder = reorder;
3667   gtk_tree_view_motion_draw_column_motion_arrow (tree_view);
3668 }
3669
3670 static void
3671 gtk_tree_view_vertical_autoscroll (GtkTreeView *tree_view)
3672 {
3673   GdkRectangle visible_rect;
3674   gint y;
3675   gint offset;
3676   gfloat value;
3677
3678   gdk_window_get_pointer (tree_view->priv->bin_window, NULL, &y, NULL);
3679   y += tree_view->priv->dy;
3680
3681   gtk_tree_view_get_visible_rect (tree_view, &visible_rect);
3682
3683   /* see if we are near the edge. */
3684   offset = y - (visible_rect.y + 2 * SCROLL_EDGE_SIZE);
3685   if (offset > 0)
3686     {
3687       offset = y - (visible_rect.y + visible_rect.height - 2 * SCROLL_EDGE_SIZE);
3688       if (offset < 0)
3689         return;
3690     }
3691
3692   value = CLAMP (tree_view->priv->vadjustment->value + offset, 0.0,
3693                  tree_view->priv->vadjustment->upper - tree_view->priv->vadjustment->page_size);
3694   gtk_adjustment_set_value (tree_view->priv->vadjustment, value);
3695 }
3696
3697 static gboolean
3698 gtk_tree_view_horizontal_autoscroll (GtkTreeView *tree_view)
3699 {
3700   GdkRectangle visible_rect;
3701   gint x;
3702   gint offset;
3703   gfloat value;
3704
3705   gdk_window_get_pointer (tree_view->priv->bin_window, &x, NULL, NULL);
3706
3707   gtk_tree_view_get_visible_rect (tree_view, &visible_rect);
3708
3709   /* See if we are near the edge. */
3710   offset = x - (visible_rect.x + SCROLL_EDGE_SIZE);
3711   if (offset > 0)
3712     {
3713       offset = x - (visible_rect.x + visible_rect.width - SCROLL_EDGE_SIZE);
3714       if (offset < 0)
3715         return TRUE;
3716     }
3717   offset = offset/3;
3718
3719   value = CLAMP (tree_view->priv->hadjustment->value + offset,
3720                  0.0, tree_view->priv->hadjustment->upper - tree_view->priv->hadjustment->page_size);
3721   gtk_adjustment_set_value (tree_view->priv->hadjustment, value);
3722
3723   return TRUE;
3724
3725 }
3726
3727 static gboolean
3728 gtk_tree_view_motion_drag_column (GtkWidget      *widget,
3729                                   GdkEventMotion *event)
3730 {
3731   GtkTreeView *tree_view = (GtkTreeView *) widget;
3732   GtkTreeViewColumn *column = tree_view->priv->drag_column;
3733   gint x, y;
3734
3735   /* Sanity Check */
3736   if ((column == NULL) ||
3737       (event->window != tree_view->priv->drag_window))
3738     return FALSE;
3739
3740   /* Handle moving the header */
3741   gdk_window_get_position (tree_view->priv->drag_window, &x, &y);
3742   x = CLAMP (x + (gint)event->x - column->drag_x, 0,
3743              MAX (tree_view->priv->width, GTK_WIDGET (tree_view)->allocation.width) - column->button->allocation.width);
3744   gdk_window_move (tree_view->priv->drag_window, x, y);
3745
3746   /* autoscroll, if needed */
3747   gtk_tree_view_horizontal_autoscroll (tree_view);
3748   /* Update the current reorder position and arrow; */
3749   gtk_tree_view_update_current_reorder (tree_view);
3750
3751   return TRUE;
3752 }
3753
3754 static void
3755 gtk_tree_view_stop_rubber_band (GtkTreeView *tree_view)
3756 {
3757   remove_scroll_timeout (tree_view);
3758   gtk_grab_remove (GTK_WIDGET (tree_view));
3759
3760   if (tree_view->priv->rubber_band_status == RUBBER_BAND_ACTIVE)
3761     {
3762       GtkTreePath *tmp_path;
3763
3764       gtk_widget_queue_draw (GTK_WIDGET (tree_view));
3765
3766       /* The anchor path should be set to the start path */
3767       tmp_path = _gtk_tree_view_find_path (tree_view,
3768                                            tree_view->priv->rubber_band_start_tree,
3769                                            tree_view->priv->rubber_band_start_node);
3770
3771       if (tree_view->priv->anchor)
3772         gtk_tree_row_reference_free (tree_view->priv->anchor);
3773
3774       tree_view->priv->anchor =
3775         gtk_tree_row_reference_new_proxy (G_OBJECT (tree_view),
3776                                           tree_view->priv->model,
3777                                           tmp_path);
3778
3779       gtk_tree_path_free (tmp_path);
3780
3781       /* ... and the cursor to the end path */
3782       tmp_path = _gtk_tree_view_find_path (tree_view,
3783                                            tree_view->priv->rubber_band_end_tree,
3784                                            tree_view->priv->rubber_band_end_node);
3785       gtk_tree_view_real_set_cursor (GTK_TREE_VIEW (tree_view), tmp_path, FALSE, FALSE);
3786       gtk_tree_path_free (tmp_path);
3787
3788       _gtk_tree_selection_emit_changed (tree_view->priv->selection);
3789     }
3790
3791   /* Clear status variables */
3792   tree_view->priv->rubber_band_status = RUBBER_BAND_OFF;
3793   tree_view->priv->rubber_band_shift = 0;
3794   tree_view->priv->rubber_band_ctrl = 0;
3795
3796   tree_view->priv->rubber_band_start_node = NULL;
3797   tree_view->priv->rubber_band_start_tree = NULL;
3798   tree_view->priv->rubber_band_end_node = NULL;
3799   tree_view->priv->rubber_band_end_tree = NULL;
3800 }
3801
3802 static void
3803 gtk_tree_view_update_rubber_band_selection_range (GtkTreeView *tree_view,
3804                                                  GtkRBTree   *start_tree,
3805                                                  GtkRBNode   *start_node,
3806                                                  GtkRBTree   *end_tree,
3807                                                  GtkRBNode   *end_node,
3808                                                  gboolean     select,
3809                                                  gboolean     skip_start,
3810                                                  gboolean     skip_end)
3811 {
3812   if (start_node == end_node)
3813     return;
3814
3815   /* We skip the first node and jump inside the loop */
3816   if (skip_start)
3817     goto skip_first;
3818
3819   do
3820     {
3821       /* Small optimization by assuming insensitive nodes are never
3822        * selected.
3823        */
3824       if (!GTK_RBNODE_FLAG_SET (start_node, GTK_RBNODE_IS_SELECTED))
3825         {
3826           GtkTreePath *path;
3827           gboolean selectable;
3828
3829           path = _gtk_tree_view_find_path (tree_view, start_tree, start_node);
3830           selectable = _gtk_tree_selection_row_is_selectable (tree_view->priv->selection, start_node, path);
3831           gtk_tree_path_free (path);
3832
3833           if (!selectable)
3834             goto node_not_selectable;
3835         }
3836
3837       if (select)
3838         {
3839           if (tree_view->priv->rubber_band_shift)
3840             GTK_RBNODE_SET_FLAG (start_node, GTK_RBNODE_IS_SELECTED);
3841           else if (tree_view->priv->rubber_band_ctrl)
3842             {
3843               /* Toggle the selection state */
3844               if (GTK_RBNODE_FLAG_SET (start_node, GTK_RBNODE_IS_SELECTED))
3845                 GTK_RBNODE_UNSET_FLAG (start_node, GTK_RBNODE_IS_SELECTED);
3846               else
3847                 GTK_RBNODE_SET_FLAG (start_node, GTK_RBNODE_IS_SELECTED);
3848             }
3849           else
3850             GTK_RBNODE_SET_FLAG (start_node, GTK_RBNODE_IS_SELECTED);
3851         }
3852       else
3853         {
3854           /* Mirror the above */
3855           if (tree_view->priv->rubber_band_shift)
3856             GTK_RBNODE_UNSET_FLAG (start_node, GTK_RBNODE_IS_SELECTED);
3857           else if (tree_view->priv->rubber_band_ctrl)
3858             {
3859               /* Toggle the selection state */
3860               if (GTK_RBNODE_FLAG_SET (start_node, GTK_RBNODE_IS_SELECTED))
3861                 GTK_RBNODE_UNSET_FLAG (start_node, GTK_RBNODE_IS_SELECTED);
3862               else
3863                 GTK_RBNODE_SET_FLAG (start_node, GTK_RBNODE_IS_SELECTED);
3864             }
3865           else
3866             GTK_RBNODE_UNSET_FLAG (start_node, GTK_RBNODE_IS_SELECTED);
3867         }
3868
3869       _gtk_tree_view_queue_draw_node (tree_view, start_tree, start_node, NULL);
3870
3871 node_not_selectable:
3872       if (start_node == end_node)
3873         break;
3874
3875 skip_first:
3876
3877       if (start_node->children)
3878         {
3879           start_tree = start_node->children;
3880           start_node = start_tree->root;
3881           while (start_node->left != start_tree->nil)
3882             start_node = start_node->left;
3883         }
3884       else
3885         {
3886           _gtk_rbtree_next_full (start_tree, start_node, &start_tree, &start_node);
3887
3888           if (!start_tree)
3889             /* Ran out of tree */
3890             break;
3891         }
3892
3893       if (skip_end && start_node == end_node)
3894         break;
3895     }
3896   while (TRUE);
3897 }
3898
3899 static void
3900 gtk_tree_view_update_rubber_band_selection (GtkTreeView *tree_view)
3901 {
3902   GtkRBTree *start_tree, *end_tree;
3903   GtkRBNode *start_node, *end_node;
3904
3905   _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);
3906   _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);
3907
3908   /* Handle the start area first */
3909   if (!tree_view->priv->rubber_band_start_node)
3910     {
3911       gtk_tree_view_update_rubber_band_selection_range (tree_view,
3912                                                        start_tree,
3913                                                        start_node,
3914                                                        end_tree,
3915                                                        end_node,
3916                                                        TRUE,
3917                                                        FALSE,
3918                                                        FALSE);
3919     }
3920   else if (_gtk_rbtree_node_find_offset (start_tree, start_node) <
3921            _gtk_rbtree_node_find_offset (tree_view->priv->rubber_band_start_tree, tree_view->priv->rubber_band_start_node))
3922     {
3923       /* New node is above the old one; selection became bigger */
3924       gtk_tree_view_update_rubber_band_selection_range (tree_view,
3925                                                        start_tree,
3926                                                        start_node,
3927                                                        tree_view->priv->rubber_band_start_tree,
3928                                                        tree_view->priv->rubber_band_start_node,
3929                                                        TRUE,
3930                                                        FALSE,
3931                                                        TRUE);
3932     }
3933   else if (_gtk_rbtree_node_find_offset (start_tree, start_node) >
3934            _gtk_rbtree_node_find_offset (tree_view->priv->rubber_band_start_tree, tree_view->priv->rubber_band_start_node))
3935     {
3936       /* New node is below the old one; selection became smaller */
3937       gtk_tree_view_update_rubber_band_selection_range (tree_view,
3938                                                        tree_view->priv->rubber_band_start_tree,
3939                                                        tree_view->priv->rubber_band_start_node,
3940                                                        start_tree,
3941                                                        start_node,
3942                                                        FALSE,
3943                                                        FALSE,
3944                                                        TRUE);
3945     }
3946
3947   tree_view->priv->rubber_band_start_tree = start_tree;
3948   tree_view->priv->rubber_band_start_node = start_node;
3949
3950   /* Next, handle the end area */
3951   if (!tree_view->priv->rubber_band_end_node)
3952     {
3953       /* In the event this happens, start_node was also NULL; this case is
3954        * handled above.
3955        */
3956     }
3957   else if (!end_node)
3958     {
3959       /* Find the last node in the tree */
3960       _gtk_rbtree_find_offset (tree_view->priv->tree, tree_view->priv->height - 1,
3961                                &end_tree, &end_node);
3962
3963       /* Selection reached end of the tree */
3964       gtk_tree_view_update_rubber_band_selection_range (tree_view,
3965                                                        tree_view->priv->rubber_band_end_tree,
3966                                                        tree_view->priv->rubber_band_end_node,
3967                                                        end_tree,
3968                                                        end_node,
3969                                                        TRUE,
3970                                                        TRUE,
3971                                                        FALSE);
3972     }
3973   else if (_gtk_rbtree_node_find_offset (end_tree, end_node) >
3974            _gtk_rbtree_node_find_offset (tree_view->priv->rubber_band_end_tree, tree_view->priv->rubber_band_end_node))
3975     {
3976       /* New node is below the old one; selection became bigger */
3977       gtk_tree_view_update_rubber_band_selection_range (tree_view,
3978                                                        tree_view->priv->rubber_band_end_tree,
3979                                                        tree_view->priv->rubber_band_end_node,
3980                                                        end_tree,
3981                                                        end_node,
3982                                                        TRUE,
3983                                                        TRUE,
3984                                                        FALSE);
3985     }
3986   else if (_gtk_rbtree_node_find_offset (end_tree, end_node) <
3987            _gtk_rbtree_node_find_offset (tree_view->priv->rubber_band_end_tree, tree_view->priv->rubber_band_end_node))
3988     {
3989       /* New node is above the old one; selection became smaller */
3990       gtk_tree_view_update_rubber_band_selection_range (tree_view,
3991                                                        end_tree,
3992                                                        end_node,
3993                                                        tree_view->priv->rubber_band_end_tree,
3994                                                        tree_view->priv->rubber_band_end_node,
3995                                                        FALSE,
3996                                                        TRUE,
3997                                                        FALSE);
3998     }
3999
4000   tree_view->priv->rubber_band_end_tree = end_tree;
4001   tree_view->priv->rubber_band_end_node = end_node;
4002 }
4003
4004 static void
4005 gtk_tree_view_update_rubber_band (GtkTreeView *tree_view)
4006 {
4007   gint x, y;
4008   GdkRectangle old_area;
4009   GdkRectangle new_area;
4010   GdkRectangle common;
4011   GdkRegion *invalid_region;
4012
4013   old_area.x = MIN (tree_view->priv->press_start_x, tree_view->priv->rubber_band_x);
4014   old_area.y = MIN (tree_view->priv->press_start_y, tree_view->priv->rubber_band_y) - tree_view->priv->dy;
4015   old_area.width = ABS (tree_view->priv->rubber_band_x - tree_view->priv->press_start_x) + 1;
4016   old_area.height = ABS (tree_view->priv->rubber_band_y - tree_view->priv->press_start_y) + 1;
4017
4018   gdk_window_get_pointer (tree_view->priv->bin_window, &x, &y, NULL);
4019
4020   x = MAX (x, 0);
4021   y = MAX (y, 0) + tree_view->priv->dy;
4022
4023   new_area.x = MIN (tree_view->priv->press_start_x, x);
4024   new_area.y = MIN (tree_view->priv->press_start_y, y) - tree_view->priv->dy;
4025   new_area.width = ABS (x - tree_view->priv->press_start_x) + 1;
4026   new_area.height = ABS (y - tree_view->priv->press_start_y) + 1;
4027
4028   invalid_region = gdk_region_rectangle (&old_area);
4029   gdk_region_union_with_rect (invalid_region, &new_area);
4030
4031   gdk_rectangle_intersect (&old_area, &new_area, &common);
4032   if (common.width > 2 && common.height > 2)
4033     {
4034       GdkRegion *common_region;
4035
4036       /* make sure the border is invalidated */
4037       common.x += 1;
4038       common.y += 1;
4039       common.width -= 2;
4040       common.height -= 2;
4041
4042       common_region = gdk_region_rectangle (&common);
4043
4044       gdk_region_subtract (invalid_region, common_region);
4045       gdk_region_destroy (common_region);
4046     }
4047
4048   gdk_window_invalidate_region (tree_view->priv->bin_window, invalid_region, TRUE);
4049
4050   gdk_region_destroy (invalid_region);
4051
4052   tree_view->priv->rubber_band_x = x;
4053   tree_view->priv->rubber_band_y = y;
4054
4055   gtk_tree_view_update_rubber_band_selection (tree_view);
4056 }
4057
4058 static void
4059 gtk_tree_view_paint_rubber_band (GtkTreeView  *tree_view,
4060                                 GdkRectangle *area)
4061 {
4062   cairo_t *cr;
4063   GdkRectangle rect;
4064   GdkRectangle rubber_rect;
4065
4066   rubber_rect.x = MIN (tree_view->priv->press_start_x, tree_view->priv->rubber_band_x);
4067   rubber_rect.y = MIN (tree_view->priv->press_start_y, tree_view->priv->rubber_band_y) - tree_view->priv->dy;
4068   rubber_rect.width = ABS (tree_view->priv->press_start_x - tree_view->priv->rubber_band_x) + 1;
4069   rubber_rect.height = ABS (tree_view->priv->press_start_y - tree_view->priv->rubber_band_y) + 1;
4070
4071   if (!gdk_rectangle_intersect (&rubber_rect, area, &rect))
4072     return;
4073
4074   cr = gdk_cairo_create (tree_view->priv->bin_window);
4075   cairo_set_line_width (cr, 1.0);
4076
4077   cairo_set_source_rgba (cr,
4078                          GTK_WIDGET (tree_view)->style->fg[GTK_STATE_NORMAL].red / 65535.,
4079                          GTK_WIDGET (tree_view)->style->fg[GTK_STATE_NORMAL].green / 65535.,
4080                          GTK_WIDGET (tree_view)->style->fg[GTK_STATE_NORMAL].blue / 65535.,
4081                          .25);
4082
4083   gdk_cairo_rectangle (cr, &rect);
4084   cairo_clip (cr);
4085   cairo_paint (cr);
4086
4087   cairo_set_source_rgb (cr,
4088                         GTK_WIDGET (tree_view)->style->fg[GTK_STATE_NORMAL].red / 65535.,
4089                         GTK_WIDGET (tree_view)->style->fg[GTK_STATE_NORMAL].green / 65535.,
4090                         GTK_WIDGET (tree_view)->style->fg[GTK_STATE_NORMAL].blue / 65535.);
4091
4092   cairo_rectangle (cr,
4093                    rubber_rect.x + 0.5, rubber_rect.y + 0.5,
4094                    rubber_rect.width - 1, rubber_rect.height - 1);
4095   cairo_stroke (cr);
4096
4097   cairo_destroy (cr);
4098 }
4099
4100 static gboolean
4101 gtk_tree_view_motion_bin_window (GtkWidget      *widget,
4102                                  GdkEventMotion *event)
4103 {
4104   GtkTreeView *tree_view;
4105   GtkRBTree *tree;
4106   GtkRBNode *node;
4107   gint new_y;
4108
4109   tree_view = (GtkTreeView *) widget;
4110
4111   if (tree_view->priv->tree == NULL)
4112     return FALSE;
4113
4114   if (tree_view->priv->rubber_band_status == RUBBER_BAND_MAYBE_START)
4115     {
4116       gtk_grab_add (GTK_WIDGET (tree_view));
4117       gtk_tree_view_update_rubber_band (tree_view);
4118
4119       tree_view->priv->rubber_band_status = RUBBER_BAND_ACTIVE;
4120     }
4121   else if (tree_view->priv->rubber_band_status == RUBBER_BAND_ACTIVE)
4122     {
4123       gtk_tree_view_update_rubber_band (tree_view);
4124
4125       add_scroll_timeout (tree_view);
4126     }
4127
4128   /* only check for an initiated drag when a button is pressed */
4129   if (tree_view->priv->pressed_button >= 0
4130       && !tree_view->priv->rubber_band_status)
4131     gtk_tree_view_maybe_begin_dragging_row (tree_view, event);
4132
4133   new_y = TREE_WINDOW_Y_TO_RBTREE_Y(tree_view, event->y);
4134   if (new_y < 0)
4135     new_y = 0;
4136
4137   _gtk_rbtree_find_offset (tree_view->priv->tree, new_y, &tree, &node);
4138
4139   /* If we are currently pressing down a button, we don't want to prelight anything else. */
4140   if ((tree_view->priv->button_pressed_node != NULL) &&
4141       (tree_view->priv->button_pressed_node != node))
4142     node = NULL;
4143
4144   tree_view->priv->event_last_x = event->x;
4145   tree_view->priv->event_last_y = event->y;
4146
4147   prelight_or_select (tree_view, tree, node, event->x, event->y);
4148
4149   return TRUE;
4150 }
4151
4152 static gboolean
4153 gtk_tree_view_motion (GtkWidget      *widget,
4154                       GdkEventMotion *event)
4155 {
4156   GtkTreeView *tree_view;
4157
4158   tree_view = (GtkTreeView *) widget;
4159
4160   /* Resizing a column */
4161   if (GTK_TREE_VIEW_FLAG_SET (tree_view, GTK_TREE_VIEW_IN_COLUMN_RESIZE))
4162     return gtk_tree_view_motion_resize_column (widget, event);
4163
4164   /* Drag column */
4165   if (GTK_TREE_VIEW_FLAG_SET (tree_view, GTK_TREE_VIEW_IN_COLUMN_DRAG))
4166     return gtk_tree_view_motion_drag_column (widget, event);
4167
4168   /* Sanity check it */
4169   if (event->window == tree_view->priv->bin_window)
4170     return gtk_tree_view_motion_bin_window (widget, event);
4171
4172   return FALSE;
4173 }
4174
4175 /* Invalidate the focus rectangle near the edge of the bin_window; used when
4176  * the tree is empty.
4177  */
4178 static void
4179 invalidate_empty_focus (GtkTreeView *tree_view)
4180 {
4181   GdkRectangle area;
4182
4183   if (!gtk_widget_has_focus (GTK_WIDGET (tree_view)))
4184     return;
4185
4186   area.x = 0;
4187   area.y = 0;
4188   gdk_drawable_get_size (tree_view->priv->bin_window, &area.width, &area.height);
4189   gdk_window_invalidate_rect (tree_view->priv->bin_window, &area, FALSE);
4190 }
4191
4192 /* Draws a focus rectangle near the edge of the bin_window; used when the tree
4193  * is empty.
4194  */
4195 static void
4196 draw_empty_focus (GtkTreeView *tree_view, GdkRectangle *clip_area)
4197 {
4198   GtkWidget *widget = GTK_WIDGET (tree_view);
4199   gint w, h;
4200
4201   if (!gtk_widget_has_focus (widget))
4202     return;
4203
4204   gdk_drawable_get_size (tree_view->priv->bin_window, &w, &h);
4205
4206   w -= 2;
4207   h -= 2;
4208
4209   if (w > 0 && h > 0)
4210     gtk_paint_focus (gtk_widget_get_style (widget),
4211                      tree_view->priv->bin_window,
4212                      gtk_widget_get_state (widget),
4213                      clip_area,
4214                      widget,
4215                      NULL,
4216                      1, 1, w, h);
4217 }
4218
4219 static void
4220 gtk_tree_view_draw_grid_lines (GtkTreeView    *tree_view,
4221                                GdkEventExpose *event,
4222                                gint            n_visible_columns)
4223 {
4224   GList *list = tree_view->priv->columns;
4225   gint i = 0;
4226   gint current_x = 0;
4227
4228   if (tree_view->priv->grid_lines != GTK_TREE_VIEW_GRID_LINES_VERTICAL
4229       && tree_view->priv->grid_lines != GTK_TREE_VIEW_GRID_LINES_BOTH)
4230     return;
4231
4232   /* Only draw the lines for visible rows and columns */
4233   for (list = tree_view->priv->columns; list; list = list->next, i++)
4234     {
4235       GtkTreeViewColumn *column = list->data;
4236
4237       /* We don't want a line for the last column */
4238       if (i == n_visible_columns - 1)
4239         break;
4240
4241       if (! column->visible)
4242         continue;
4243
4244       current_x += column->width;
4245
4246       gdk_draw_line (event->window,
4247                      tree_view->priv->grid_line_gc,
4248                      current_x - 1, 0,
4249                      current_x - 1, tree_view->priv->height);
4250     }
4251 }
4252
4253 /* Warning: Very scary function.
4254  * Modify at your own risk
4255  *
4256  * KEEP IN SYNC WITH gtk_tree_view_create_row_drag_icon()!
4257  * FIXME: It's not...
4258  */
4259 static gboolean
4260 gtk_tree_view_bin_expose (GtkWidget      *widget,
4261                           GdkEventExpose *event)
4262 {
4263   GtkTreeView *tree_view = GTK_TREE_VIEW (widget);
4264   GtkTreePath *path;
4265   GtkRBTree *tree;
4266   GList *list;
4267   GtkRBNode *node;
4268   GtkRBNode *cursor = NULL;
4269   GtkRBTree *cursor_tree = NULL;
4270   GtkRBNode *drag_highlight = NULL;
4271   GtkRBTree *drag_highlight_tree = NULL;
4272   GtkTreeIter iter;
4273   gint new_y;
4274   gint y_offset, cell_offset;
4275   gint max_height;
4276   gint depth;
4277   GdkRectangle background_area;
4278   GdkRectangle cell_area;
4279   guint flags;
4280   gint highlight_x;
4281   gint expander_cell_width;
4282   gint bin_window_width;
4283   gint bin_window_height;
4284   GtkTreePath *cursor_path;
4285   GtkTreePath *drag_dest_path;
4286   GList *first_column, *last_column;
4287   gint vertical_separator;
4288   gint horizontal_separator;
4289   gint focus_line_width;
4290   gboolean allow_rules;
4291   gboolean has_special_cell;
4292   gboolean rtl;
4293   gint n_visible_columns;
4294   gint pointer_x, pointer_y;
4295   gint grid_line_width;
4296   gboolean got_pointer = FALSE;
4297   gboolean row_ending_details;
4298   gboolean draw_vgrid_lines, draw_hgrid_lines;
4299
4300   rtl = (gtk_widget_get_direction (widget) == GTK_TEXT_DIR_RTL);
4301
4302   gtk_widget_style_get (widget,
4303                         "horizontal-separator", &horizontal_separator,
4304                         "vertical-separator", &vertical_separator,
4305                         "allow-rules", &allow_rules,
4306                         "focus-line-width", &focus_line_width,
4307                         "row-ending-details", &row_ending_details,
4308                         NULL);
4309
4310   if (tree_view->priv->tree == NULL)
4311     {
4312       draw_empty_focus (tree_view, &event->area);
4313       return TRUE;
4314     }
4315
4316   /* clip event->area to the visible area */
4317   if (event->area.height < 0)
4318     return TRUE;
4319
4320   validate_visible_area (tree_view);
4321
4322   new_y = TREE_WINDOW_Y_TO_RBTREE_Y (tree_view, event->area.y);
4323
4324   if (new_y < 0)
4325     new_y = 0;
4326   y_offset = -_gtk_rbtree_find_offset (tree_view->priv->tree, new_y, &tree, &node);
4327   gdk_drawable_get_size (tree_view->priv->bin_window,
4328                          &bin_window_width, &bin_window_height);
4329
4330   if (tree_view->priv->height < bin_window_height)
4331     {
4332       gtk_paint_flat_box (widget->style,
4333                           event->window,
4334                           widget->state,
4335                           GTK_SHADOW_NONE,
4336                           &event->area,
4337                           widget,
4338                           "cell_even",
4339                           0, tree_view->priv->height,
4340                           bin_window_width,
4341                           bin_window_height - tree_view->priv->height);
4342     }
4343
4344   if (node == NULL)
4345     return TRUE;
4346
4347   /* find the path for the node */
4348   path = _gtk_tree_view_find_path ((GtkTreeView *)widget,
4349                                    tree,
4350                                    node);
4351   gtk_tree_model_get_iter (tree_view->priv->model,
4352                            &iter,
4353                            path);
4354   depth = gtk_tree_path_get_depth (path);
4355   gtk_tree_path_free (path);
4356
4357   cursor_path = NULL;
4358   drag_dest_path = NULL;
4359
4360   if (tree_view->priv->cursor)
4361     cursor_path = gtk_tree_row_reference_get_path (tree_view->priv->cursor);
4362
4363   if (cursor_path)
4364     _gtk_tree_view_find_node (tree_view, cursor_path,
4365                               &cursor_tree, &cursor);
4366
4367   if (tree_view->priv->drag_dest_row)
4368     drag_dest_path = gtk_tree_row_reference_get_path (tree_view->priv->drag_dest_row);
4369
4370   if (drag_dest_path)
4371     _gtk_tree_view_find_node (tree_view, drag_dest_path,
4372                               &drag_highlight_tree, &drag_highlight);
4373
4374   draw_vgrid_lines =
4375     tree_view->priv->grid_lines == GTK_TREE_VIEW_GRID_LINES_VERTICAL
4376     || tree_view->priv->grid_lines == GTK_TREE_VIEW_GRID_LINES_BOTH;
4377   draw_hgrid_lines =
4378     tree_view->priv->grid_lines == GTK_TREE_VIEW_GRID_LINES_HORIZONTAL
4379     || tree_view->priv->grid_lines == GTK_TREE_VIEW_GRID_LINES_BOTH;
4380
4381   if (draw_vgrid_lines || draw_hgrid_lines)
4382     gtk_widget_style_get (widget, "grid-line-width", &grid_line_width, NULL);
4383
4384   n_visible_columns = 0;
4385   for (list = tree_view->priv->columns; list; list = list->next)
4386     {
4387       if (! GTK_TREE_VIEW_COLUMN (list->data)->visible)
4388         continue;
4389       n_visible_columns ++;
4390     }
4391
4392   /* Find the last column */
4393   for (last_column = g_list_last (tree_view->priv->columns);
4394        last_column && !(GTK_TREE_VIEW_COLUMN (last_column->data)->visible);
4395        last_column = last_column->prev)
4396     ;
4397
4398   /* and the first */
4399   for (first_column = g_list_first (tree_view->priv->columns);
4400        first_column && !(GTK_TREE_VIEW_COLUMN (first_column->data)->visible);
4401        first_column = first_column->next)
4402     ;
4403
4404   /* Actually process the expose event.  To do this, we want to
4405    * start at the first node of the event, and walk the tree in
4406    * order, drawing each successive node.
4407    */
4408
4409   do
4410     {
4411       gboolean parity;
4412       gboolean is_separator = FALSE;
4413       gboolean is_first = FALSE;
4414       gboolean is_last = FALSE;
4415
4416       is_separator = row_is_separator (tree_view, &iter, NULL);
4417
4418       max_height = ROW_HEIGHT (tree_view, BACKGROUND_HEIGHT (node));
4419
4420       cell_offset = 0;
4421       highlight_x = 0; /* should match x coord of first cell */
4422       expander_cell_width = 0;
4423
4424       background_area.y = y_offset + event->area.y;
4425       background_area.height = max_height;
4426
4427       flags = 0;
4428
4429       if (GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_PRELIT))
4430         flags |= GTK_CELL_RENDERER_PRELIT;
4431
4432       if (GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_SELECTED))
4433         flags |= GTK_CELL_RENDERER_SELECTED;
4434
4435       parity = _gtk_rbtree_node_find_parity (tree, node);
4436
4437       /* we *need* to set cell data on all cells before the call
4438        * to _has_special_cell, else _has_special_cell() does not
4439        * return a correct value.
4440        */
4441       for (list = (rtl ? g_list_last (tree_view->priv->columns) : g_list_first (tree_view->priv->columns));
4442            list;
4443            list = (rtl ? list->prev : list->next))
4444         {
4445           GtkTreeViewColumn *column = list->data;
4446           gtk_tree_view_column_cell_set_cell_data (column,
4447                                                    tree_view->priv->model,
4448                                                    &iter,
4449                                                    GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_PARENT),
4450                                                    node->children?TRUE:FALSE);
4451         }
4452
4453       has_special_cell = gtk_tree_view_has_special_cell (tree_view);
4454
4455       for (list = (rtl ? g_list_last (tree_view->priv->columns) : g_list_first (tree_view->priv->columns));
4456            list;
4457            list = (rtl ? list->prev : list->next))
4458         {
4459           GtkTreeViewColumn *column = list->data;
4460           const gchar *detail = NULL;
4461           GtkStateType state;
4462
4463           if (!column->visible)
4464             continue;
4465
4466           if (cell_offset > event->area.x + event->area.width ||
4467               cell_offset + column->width < event->area.x)
4468             {
4469               cell_offset += column->width;
4470               continue;
4471             }
4472
4473           if (column->show_sort_indicator)
4474             flags |= GTK_CELL_RENDERER_SORTED;
4475           else
4476             flags &= ~GTK_CELL_RENDERER_SORTED;
4477
4478           if (cursor == node)
4479             flags |= GTK_CELL_RENDERER_FOCUSED;
4480           else
4481             flags &= ~GTK_CELL_RENDERER_FOCUSED;
4482
4483           background_area.x = cell_offset;
4484           background_area.width = column->width;
4485
4486           cell_area = background_area;
4487           cell_area.y += vertical_separator / 2;
4488           cell_area.x += horizontal_separator / 2;
4489           cell_area.height -= vertical_separator;
4490           cell_area.width -= horizontal_separator;
4491
4492           if (draw_vgrid_lines)
4493             {
4494               if (list == first_column)
4495                 {
4496                   cell_area.width -= grid_line_width / 2;
4497                 }
4498               else if (list == last_column)
4499                 {
4500                   cell_area.x += grid_line_width / 2;
4501                   cell_area.width -= grid_line_width / 2;
4502                 }
4503               else
4504                 {
4505                   cell_area.x += grid_line_width / 2;
4506                   cell_area.width -= grid_line_width;
4507                 }
4508             }
4509
4510           if (draw_hgrid_lines)
4511             {
4512               cell_area.y += grid_line_width / 2;
4513               cell_area.height -= grid_line_width;
4514             }
4515
4516           if (gdk_region_rect_in (event->region, &background_area) == GDK_OVERLAP_RECTANGLE_OUT)
4517             {
4518               cell_offset += column->width;
4519               continue;
4520             }
4521
4522           gtk_tree_view_column_cell_set_cell_data (column,
4523                                                    tree_view->priv->model,
4524                                                    &iter,
4525                                                    GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_PARENT),
4526                                                    node->children?TRUE:FALSE);
4527
4528           /* Select the detail for drawing the cell.  relevant
4529            * factors are parity, sortedness, and whether to
4530            * display rules.
4531            */
4532           if (allow_rules && tree_view->priv->has_rules)
4533             {
4534               if ((flags & GTK_CELL_RENDERER_SORTED) &&
4535                   n_visible_columns >= 3)
4536                 {
4537                   if (parity)
4538                     detail = "cell_odd_ruled_sorted";
4539                   else
4540                     detail = "cell_even_ruled_sorted";
4541                 }
4542               else
4543                 {
4544                   if (parity)
4545                     detail = "cell_odd_ruled";
4546                   else
4547                     detail = "cell_even_ruled";
4548                 }
4549             }
4550           else
4551             {
4552               if ((flags & GTK_CELL_RENDERER_SORTED) &&
4553                   n_visible_columns >= 3)
4554                 {
4555                   if (parity)
4556                     detail = "cell_odd_sorted";
4557                   else
4558                     detail = "cell_even_sorted";
4559                 }
4560               else
4561                 {
4562                   if (parity)
4563                     detail = "cell_odd";
4564                   else
4565                     detail = "cell_even";
4566                 }
4567             }
4568
4569           g_assert (detail);
4570
4571           if (widget->state == GTK_STATE_INSENSITIVE)
4572             state = GTK_STATE_INSENSITIVE;
4573           else if (flags & GTK_CELL_RENDERER_SELECTED)
4574             state = GTK_STATE_SELECTED;
4575           else
4576             state = GTK_STATE_NORMAL;
4577
4578           /* Draw background */
4579           if (row_ending_details)
4580             {
4581               char new_detail[128];
4582
4583               is_first = (rtl ? !list->next : !list->prev);
4584               is_last = (rtl ? !list->prev : !list->next);
4585
4586               /* (I don't like the snprintfs either, but couldn't find a
4587                * less messy way).
4588                */
4589               if (is_first && is_last)
4590                 g_snprintf (new_detail, 127, "%s", detail);
4591               else if (is_first)
4592                 g_snprintf (new_detail, 127, "%s_start", detail);
4593               else if (is_last)
4594                 g_snprintf (new_detail, 127, "%s_end", detail);
4595               else
4596                 g_snprintf (new_detail, 128, "%s_middle", detail);
4597
4598               gtk_paint_flat_box (widget->style,
4599                                   event->window,
4600                                   state,
4601                                   GTK_SHADOW_NONE,
4602                                   &event->area,
4603                                   widget,
4604                                   new_detail,
4605                                   background_area.x,
4606                                   background_area.y,
4607                                   background_area.width,
4608                                   background_area.height);
4609             }
4610           else
4611             {
4612               gtk_paint_flat_box (widget->style,
4613                                   event->window,
4614                                   state,
4615                                   GTK_SHADOW_NONE,
4616                                   &event->area,
4617                                   widget,
4618                                   detail,
4619                                   background_area.x,
4620                                   background_area.y,
4621                                   background_area.width,
4622                                   background_area.height);
4623             }
4624
4625           if (draw_hgrid_lines)
4626             {
4627               if (background_area.y > 0)
4628                 gdk_draw_line (event->window,
4629                                tree_view->priv->grid_line_gc,
4630                                background_area.x, background_area.y,
4631                                background_area.x + background_area.width,
4632                                background_area.y);
4633
4634               if (y_offset + max_height >= event->area.height)
4635                 gdk_draw_line (event->window,
4636                                tree_view->priv->grid_line_gc,
4637                                background_area.x, background_area.y + max_height,
4638                                background_area.x + background_area.width,
4639                                background_area.y + max_height);
4640             }
4641
4642           if (gtk_tree_view_is_expander_column (tree_view, column))
4643             {
4644               if (!rtl)
4645                 cell_area.x += (depth - 1) * tree_view->priv->level_indentation;
4646               cell_area.width -= (depth - 1) * tree_view->priv->level_indentation;
4647
4648               if (TREE_VIEW_DRAW_EXPANDERS(tree_view))
4649                 {
4650                   if (!rtl)
4651                     cell_area.x += depth * tree_view->priv->expander_size;
4652                   cell_area.width -= depth * tree_view->priv->expander_size;
4653                 }
4654
4655               /* If we have an expander column, the highlight underline
4656                * starts with that column, so that it indicates which
4657                * level of the tree we're dropping at.
4658                */
4659               highlight_x = cell_area.x;
4660               expander_cell_width = cell_area.width;
4661
4662               if (is_separator)
4663                 gtk_paint_hline (widget->style,
4664                                  event->window,
4665                                  state,
4666                                  &cell_area,
4667                                  widget,
4668                                  NULL,
4669                                  cell_area.x,
4670                                  cell_area.x + cell_area.width,
4671                                  cell_area.y + cell_area.height / 2);
4672               else
4673                 _gtk_tree_view_column_cell_render (column,
4674                                                    event->window,
4675                                                    &background_area,
4676                                                    &cell_area,
4677                                                    &event->area,
4678                                                    flags);
4679               if (TREE_VIEW_DRAW_EXPANDERS(tree_view)
4680                   && (node->flags & GTK_RBNODE_IS_PARENT) == GTK_RBNODE_IS_PARENT)
4681                 {
4682                   if (!got_pointer)
4683                     {
4684                       gdk_window_get_pointer (tree_view->priv->bin_window,
4685                                               &pointer_x, &pointer_y, NULL);
4686                       got_pointer = TRUE;
4687                     }
4688
4689                   gtk_tree_view_draw_arrow (GTK_TREE_VIEW (widget),
4690                                             tree,
4691                                             node,
4692                                             pointer_x, pointer_y);
4693                 }
4694             }
4695           else
4696             {
4697               if (is_separator)
4698                 gtk_paint_hline (widget->style,
4699                                  event->window,
4700                                  state,
4701                                  &cell_area,
4702                                  widget,
4703                                  NULL,
4704                                  cell_area.x,
4705                                  cell_area.x + cell_area.width,
4706                                  cell_area.y + cell_area.height / 2);
4707               else
4708                 _gtk_tree_view_column_cell_render (column,
4709                                                    event->window,
4710                                                    &background_area,
4711                                                    &cell_area,
4712                                                    &event->area,
4713                                                    flags);
4714             }
4715
4716           if (gtk_tree_view_is_expander_column (tree_view, column) &&
4717               tree_view->priv->tree_lines_enabled)
4718             {
4719               gint x = background_area.x;
4720               gint mult = rtl ? -1 : 1;
4721               gint y0 = background_area.y;
4722               gint y1 = background_area.y + background_area.height/2;
4723               gint y2 = background_area.y + background_area.height;
4724
4725               if (rtl)
4726                 x += background_area.width - 1;
4727
4728               if ((node->flags & GTK_RBNODE_IS_PARENT) == GTK_RBNODE_IS_PARENT
4729                   && depth > 1)
4730                 {
4731                   gdk_draw_line (event->window,
4732                                  tree_view->priv->tree_line_gc,
4733                                  x + tree_view->priv->expander_size * (depth - 1.5) * mult,
4734                                  y1,
4735                                  x + tree_view->priv->expander_size * (depth - 1.1) * mult,
4736                                  y1);
4737                 }
4738               else if (depth > 1)
4739                 {
4740                   gdk_draw_line (event->window,
4741                                  tree_view->priv->tree_line_gc,
4742                                  x + tree_view->priv->expander_size * (depth - 1.5) * mult,
4743                                  y1,
4744                                  x + tree_view->priv->expander_size * (depth - 0.5) * mult,
4745                                  y1);
4746                 }
4747
4748               if (depth > 1)
4749                 {
4750                   gint i;
4751                   GtkRBNode *tmp_node;
4752                   GtkRBTree *tmp_tree;
4753
4754                   if (!_gtk_rbtree_next (tree, node))
4755                     gdk_draw_line (event->window,
4756                                    tree_view->priv->tree_line_gc,
4757                                    x + tree_view->priv->expander_size * (depth - 1.5) * mult,
4758                                    y0,
4759                                    x + tree_view->priv->expander_size * (depth - 1.5) * mult,
4760                                    y1);
4761                   else
4762                     gdk_draw_line (event->window,
4763                                    tree_view->priv->tree_line_gc,
4764                                    x + tree_view->priv->expander_size * (depth - 1.5) * mult,
4765                                    y0,
4766                                    x + tree_view->priv->expander_size * (depth - 1.5) * mult,
4767                                    y2);
4768
4769                   tmp_node = tree->parent_node;
4770                   tmp_tree = tree->parent_tree;
4771
4772                   for (i = depth - 2; i > 0; i--)
4773                     {
4774                       if (_gtk_rbtree_next (tmp_tree, tmp_node))
4775                         gdk_draw_line (event->window,
4776                                        tree_view->priv->tree_line_gc,
4777                                        x + tree_view->priv->expander_size * (i - 0.5) * mult,
4778                                        y0,
4779                                        x + tree_view->priv->expander_size * (i - 0.5) * mult,
4780                                        y2);
4781
4782                       tmp_node = tmp_tree->parent_node;
4783                       tmp_tree = tmp_tree->parent_tree;
4784                     }
4785                 }
4786             }
4787
4788           if (node == cursor && has_special_cell &&
4789               ((column == tree_view->priv->focus_column &&
4790                 GTK_TREE_VIEW_FLAG_SET (tree_view, GTK_TREE_VIEW_DRAW_KEYFOCUS) &&
4791                 gtk_widget_has_focus (widget)) ||
4792                (column == tree_view->priv->edited_column)))
4793             {
4794               _gtk_tree_view_column_cell_draw_focus (column,
4795                                                      event->window,
4796                                                      &background_area,
4797                                                      &cell_area,
4798                                                      &event->area,
4799                                                      flags);
4800             }
4801
4802           cell_offset += column->width;
4803         }
4804
4805       if (node == drag_highlight)
4806         {
4807           /* Draw indicator for the drop
4808            */
4809           gint highlight_y = -1;
4810           GtkRBTree *tree = NULL;
4811           GtkRBNode *node = NULL;
4812           gint width;
4813
4814           switch (tree_view->priv->drag_dest_pos)
4815             {
4816             case GTK_TREE_VIEW_DROP_BEFORE:
4817               highlight_y = background_area.y - 1;
4818               if (highlight_y < 0)
4819                       highlight_y = 0;
4820               break;
4821
4822             case GTK_TREE_VIEW_DROP_AFTER:
4823               highlight_y = background_area.y + background_area.height - 1;
4824               break;
4825
4826             case GTK_TREE_VIEW_DROP_INTO_OR_BEFORE:
4827             case GTK_TREE_VIEW_DROP_INTO_OR_AFTER:
4828               _gtk_tree_view_find_node (tree_view, drag_dest_path, &tree, &node);
4829
4830               if (tree == NULL)
4831                 break;
4832               gdk_drawable_get_size (tree_view->priv->bin_window,
4833                                      &width, NULL);
4834
4835               if (row_ending_details)
4836                 gtk_paint_focus (widget->style,
4837                                  tree_view->priv->bin_window,
4838                                  gtk_widget_get_state (widget),
4839                                  &event->area,
4840                                  widget,
4841                                  (is_first
4842                                   ? (is_last ? "treeview-drop-indicator" : "treeview-drop-indicator-left" )
4843                                   : (is_last ? "treeview-drop-indicator-right" : "tree-view-drop-indicator-middle" )),
4844                                  0, BACKGROUND_FIRST_PIXEL (tree_view, tree, node)
4845                                  - focus_line_width / 2,
4846                                  width, ROW_HEIGHT (tree_view, BACKGROUND_HEIGHT (node))
4847                                - focus_line_width + 1);
4848               else
4849                 gtk_paint_focus (widget->style,
4850                                  tree_view->priv->bin_window,
4851                                  gtk_widget_get_state (widget),
4852                                  &event->area,
4853                                  widget,
4854                                  "treeview-drop-indicator",
4855                                  0, BACKGROUND_FIRST_PIXEL (tree_view, tree, node)
4856                                  - focus_line_width / 2,
4857                                  width, ROW_HEIGHT (tree_view, BACKGROUND_HEIGHT (node))
4858                                  - focus_line_width + 1);
4859               break;
4860             }
4861
4862           if (highlight_y >= 0)
4863             {
4864               gdk_draw_line (event->window,
4865                              widget->style->fg_gc[gtk_widget_get_state (widget)],
4866                              rtl ? highlight_x + expander_cell_width : highlight_x,
4867                              highlight_y,
4868                              rtl ? 0 : bin_window_width,
4869                              highlight_y);
4870             }
4871         }
4872
4873       /* draw the big row-spanning focus rectangle, if needed */
4874       if (!has_special_cell && node == cursor &&
4875           GTK_TREE_VIEW_FLAG_SET (tree_view, GTK_TREE_VIEW_DRAW_KEYFOCUS) &&
4876           gtk_widget_has_focus (widget))
4877         {
4878           gint tmp_y, tmp_height;
4879           gint width;
4880           GtkStateType focus_rect_state;
4881
4882           focus_rect_state =
4883             flags & GTK_CELL_RENDERER_SELECTED ? GTK_STATE_SELECTED :
4884             (flags & GTK_CELL_RENDERER_PRELIT ? GTK_STATE_PRELIGHT :
4885              (flags & GTK_CELL_RENDERER_INSENSITIVE ? GTK_STATE_INSENSITIVE :
4886               GTK_STATE_NORMAL));
4887
4888           gdk_drawable_get_size (tree_view->priv->bin_window,
4889                                  &width, NULL);
4890
4891           if (draw_hgrid_lines)
4892             {
4893               tmp_y = BACKGROUND_FIRST_PIXEL (tree_view, tree, node) + grid_line_width / 2;
4894               tmp_height = ROW_HEIGHT (tree_view, BACKGROUND_HEIGHT (node)) - grid_line_width;
4895             }
4896           else
4897             {
4898               tmp_y = BACKGROUND_FIRST_PIXEL (tree_view, tree, node);
4899               tmp_height = ROW_HEIGHT (tree_view, BACKGROUND_HEIGHT (node));
4900             }
4901
4902           if (row_ending_details)
4903             gtk_paint_focus (widget->style,
4904                              tree_view->priv->bin_window,
4905                              focus_rect_state,
4906                              &event->area,
4907                              widget,
4908                              (is_first
4909                               ? (is_last ? "treeview" : "treeview-left" )
4910                               : (is_last ? "treeview-right" : "treeview-middle" )),
4911                              0, tmp_y,
4912                              width, tmp_height);
4913           else
4914             gtk_paint_focus (widget->style,
4915                              tree_view->priv->bin_window,
4916                              focus_rect_state,
4917                              &event->area,
4918                              widget,
4919                              "treeview",
4920                              0, tmp_y,
4921                              width, tmp_height);
4922         }
4923
4924       y_offset += max_height;
4925       if (node->children)
4926         {
4927           GtkTreeIter parent = iter;
4928           gboolean has_child;
4929
4930           tree = node->children;
4931           node = tree->root;
4932
4933           g_assert (node != tree->nil);
4934
4935           while (node->left != tree->nil)
4936             node = node->left;
4937           has_child = gtk_tree_model_iter_children (tree_view->priv->model,
4938                                                     &iter,
4939                                                     &parent);
4940           depth++;
4941
4942           /* Sanity Check! */
4943           TREE_VIEW_INTERNAL_ASSERT (has_child, FALSE);
4944         }
4945       else
4946         {
4947           gboolean done = FALSE;
4948
4949           do
4950             {
4951               node = _gtk_rbtree_next (tree, node);
4952               if (node != NULL)
4953                 {
4954                   gboolean has_next = gtk_tree_model_iter_next (tree_view->priv->model, &iter);
4955                   done = TRUE;
4956
4957                   /* Sanity Check! */
4958                   TREE_VIEW_INTERNAL_ASSERT (has_next, FALSE);
4959                 }
4960               else
4961                 {
4962                   GtkTreeIter parent_iter = iter;
4963                   gboolean has_parent;
4964
4965                   node = tree->parent_node;
4966                   tree = tree->parent_tree;
4967                   if (tree == NULL)
4968                     /* we should go to done to free some memory */
4969                     goto done;
4970                   has_parent = gtk_tree_model_iter_parent (tree_view->priv->model,
4971                                                            &iter,
4972                                                            &parent_iter);
4973                   depth--;
4974
4975                   /* Sanity check */
4976                   TREE_VIEW_INTERNAL_ASSERT (has_parent, FALSE);
4977                 }
4978             }
4979           while (!done);
4980         }
4981     }
4982   while (y_offset < event->area.height);
4983
4984 done:
4985   gtk_tree_view_draw_grid_lines (tree_view, event, n_visible_columns);
4986
4987  if (tree_view->priv->rubber_band_status == RUBBER_BAND_ACTIVE)
4988    {
4989      GdkRectangle *rectangles;
4990      gint n_rectangles;
4991
4992      gdk_region_get_rectangles (event->region,
4993                                 &rectangles,
4994                                 &n_rectangles);
4995
4996      while (n_rectangles--)
4997        gtk_tree_view_paint_rubber_band (tree_view, &rectangles[n_rectangles]);
4998
4999      g_free (rectangles);
5000    }
5001
5002   if (cursor_path)
5003     gtk_tree_path_free (cursor_path);
5004
5005   if (drag_dest_path)
5006     gtk_tree_path_free (drag_dest_path);
5007
5008   return FALSE;
5009 }
5010
5011 static gboolean
5012 gtk_tree_view_expose (GtkWidget      *widget,
5013                       GdkEventExpose *event)
5014 {
5015   GtkTreeView *tree_view = GTK_TREE_VIEW (widget);
5016
5017   if (event->window == tree_view->priv->bin_window)
5018     {
5019       gboolean retval;
5020       GList *tmp_list;
5021
5022       retval = gtk_tree_view_bin_expose (widget, event);
5023
5024       /* We can't just chain up to Container::expose as it will try to send the
5025        * event to the headers, so we handle propagating it to our children
5026        * (eg. widgets being edited) ourselves.
5027        */
5028       tmp_list = tree_view->priv->children;
5029       while (tmp_list)
5030         {
5031           GtkTreeViewChild *child = tmp_list->data;
5032           tmp_list = tmp_list->next;
5033
5034           gtk_container_propagate_expose (GTK_CONTAINER (tree_view), child->widget, event);
5035         }
5036
5037       return retval;
5038     }
5039
5040   else if (event->window == tree_view->priv->header_window)
5041     {
5042       GList *list;
5043
5044       for (list = tree_view->priv->columns; list != NULL; list = list->next)
5045         {
5046           GtkTreeViewColumn *column = list->data;
5047
5048           if (column == tree_view->priv->drag_column)
5049             continue;
5050
5051           if (column->visible)
5052             gtk_container_propagate_expose (GTK_CONTAINER (tree_view),
5053                                             column->button,
5054                                             event);
5055         }
5056     }
5057   else if (event->window == tree_view->priv->drag_window)
5058     {
5059       gtk_container_propagate_expose (GTK_CONTAINER (tree_view),
5060                                       tree_view->priv->drag_column->button,
5061                                       event);
5062     }
5063   return TRUE;
5064 }
5065
5066 enum
5067 {
5068   DROP_HOME,
5069   DROP_RIGHT,
5070   DROP_LEFT,
5071   DROP_END
5072 };
5073
5074 /* returns 0x1 when no column has been found -- yes it's hackish */
5075 static GtkTreeViewColumn *
5076 gtk_tree_view_get_drop_column (GtkTreeView       *tree_view,
5077                                GtkTreeViewColumn *column,
5078                                gint               drop_position)
5079 {
5080   GtkTreeViewColumn *left_column = NULL;
5081   GtkTreeViewColumn *cur_column = NULL;
5082   GList *tmp_list;
5083
5084   if (!column->reorderable)
5085     return (GtkTreeViewColumn *)0x1;
5086
5087   switch (drop_position)
5088     {
5089       case DROP_HOME:
5090         /* find first column where we can drop */
5091         tmp_list = tree_view->priv->columns;
5092         if (column == GTK_TREE_VIEW_COLUMN (tmp_list->data))
5093           return (GtkTreeViewColumn *)0x1;
5094
5095         while (tmp_list)
5096           {
5097             g_assert (tmp_list);
5098
5099             cur_column = GTK_TREE_VIEW_COLUMN (tmp_list->data);
5100             tmp_list = tmp_list->next;
5101
5102             if (left_column && left_column->visible == FALSE)
5103               continue;
5104
5105             if (!tree_view->priv->column_drop_func)
5106               return left_column;
5107
5108             if (!tree_view->priv->column_drop_func (tree_view, column, left_column, cur_column, tree_view->priv->column_drop_func_data))
5109               {
5110                 left_column = cur_column;
5111                 continue;
5112               }
5113
5114             return left_column;
5115           }
5116
5117         if (!tree_view->priv->column_drop_func)
5118           return left_column;
5119
5120         if (tree_view->priv->column_drop_func (tree_view, column, left_column, NULL, tree_view->priv->column_drop_func_data))
5121           return left_column;
5122         else
5123           return (GtkTreeViewColumn *)0x1;
5124         break;
5125
5126       case DROP_RIGHT:
5127         /* find first column after column where we can drop */
5128         tmp_list = tree_view->priv->columns;
5129
5130         for (; tmp_list; tmp_list = tmp_list->next)
5131           if (GTK_TREE_VIEW_COLUMN (tmp_list->data) == column)
5132             break;
5133
5134         if (!tmp_list || !tmp_list->next)
5135           return (GtkTreeViewColumn *)0x1;
5136
5137         tmp_list = tmp_list->next;
5138         left_column = GTK_TREE_VIEW_COLUMN (tmp_list->data);
5139         tmp_list = tmp_list->next;
5140
5141         while (tmp_list)
5142           {
5143             g_assert (tmp_list);
5144
5145             cur_column = GTK_TREE_VIEW_COLUMN (tmp_list->data);
5146             tmp_list = tmp_list->next;
5147
5148             if (left_column && left_column->visible == FALSE)
5149               {
5150                 left_column = cur_column;
5151                 if (tmp_list)
5152                   tmp_list = tmp_list->next;
5153                 continue;
5154               }
5155
5156             if (!tree_view->priv->column_drop_func)
5157               return left_column;
5158
5159             if (!tree_view->priv->column_drop_func (tree_view, column, left_column, cur_column, tree_view->priv->column_drop_func_data))
5160               {
5161                 left_column = cur_column;
5162                 continue;
5163               }
5164
5165             return left_column;
5166           }
5167
5168         if (!tree_view->priv->column_drop_func)
5169           return left_column;
5170
5171         if (tree_view->priv->column_drop_func (tree_view, column, left_column, NULL, tree_view->priv->column_drop_func_data))
5172           return left_column;
5173         else
5174           return (GtkTreeViewColumn *)0x1;
5175         break;
5176
5177       case DROP_LEFT:
5178         /* find first column before column where we can drop */
5179         tmp_list = tree_view->priv->columns;
5180
5181         for (; tmp_list; tmp_list = tmp_list->next)
5182           if (GTK_TREE_VIEW_COLUMN (tmp_list->data) == column)
5183             break;
5184
5185         if (!tmp_list || !tmp_list->prev)
5186           return (GtkTreeViewColumn *)0x1;
5187
5188         tmp_list = tmp_list->prev;
5189         cur_column = GTK_TREE_VIEW_COLUMN (tmp_list->data);
5190         tmp_list = tmp_list->prev;
5191
5192         while (tmp_list)
5193           {
5194             g_assert (tmp_list);
5195
5196             left_column = GTK_TREE_VIEW_COLUMN (tmp_list->data);
5197
5198             if (left_column && !left_column->visible)
5199               {
5200                 /*if (!tmp_list->prev)
5201                   return (GtkTreeViewColumn *)0x1;
5202                   */
5203 /*
5204                 cur_column = GTK_TREE_VIEW_COLUMN (tmp_list->prev->data);
5205                 tmp_list = tmp_list->prev->prev;
5206                 continue;*/
5207
5208                 cur_column = left_column;
5209                 if (tmp_list)
5210                   tmp_list = tmp_list->prev;
5211                 continue;
5212               }
5213
5214             if (!tree_view->priv->column_drop_func)
5215               return left_column;
5216
5217             if (tree_view->priv->column_drop_func (tree_view, column, left_column, cur_column, tree_view->priv->column_drop_func_data))
5218               return left_column;
5219
5220             cur_column = left_column;
5221             tmp_list = tmp_list->prev;
5222           }
5223
5224         if (!tree_view->priv->column_drop_func)
5225           return NULL;
5226
5227         if (tree_view->priv->column_drop_func (tree_view, column, NULL, cur_column, tree_view->priv->column_drop_func_data))
5228           return NULL;
5229         else
5230           return (GtkTreeViewColumn *)0x1;
5231         break;
5232
5233       case DROP_END:
5234         /* same as DROP_HOME case, but doing it backwards */
5235         tmp_list = g_list_last (tree_view->priv->columns);
5236         cur_column = NULL;
5237
5238         if (column == GTK_TREE_VIEW_COLUMN (tmp_list->data))
5239           return (GtkTreeViewColumn *)0x1;
5240
5241         while (tmp_list)
5242           {
5243             g_assert (tmp_list);
5244
5245             left_column = GTK_TREE_VIEW_COLUMN (tmp_list->data);
5246
5247             if (left_column && !left_column->visible)
5248               {
5249                 cur_column = left_column;
5250                 tmp_list = tmp_list->prev;
5251               }
5252
5253             if (!tree_view->priv->column_drop_func)
5254               return left_column;
5255
5256             if (tree_view->priv->column_drop_func (tree_view, column, left_column, cur_column, tree_view->priv->column_drop_func_data))
5257               return left_column;
5258
5259             cur_column = left_column;
5260             tmp_list = tmp_list->prev;
5261           }
5262
5263         if (!tree_view->priv->column_drop_func)
5264           return NULL;
5265
5266         if (tree_view->priv->column_drop_func (tree_view, column, NULL, cur_column, tree_view->priv->column_drop_func_data))
5267           return NULL;
5268         else
5269           return (GtkTreeViewColumn *)0x1;
5270         break;
5271     }
5272
5273   return (GtkTreeViewColumn *)0x1;
5274 }
5275
5276 static gboolean
5277 gtk_tree_view_key_press (GtkWidget   *widget,
5278                          GdkEventKey *event)
5279 {
5280   GtkTreeView *tree_view = (GtkTreeView *) widget;
5281
5282   if (tree_view->priv->rubber_band_status)
5283     {
5284       if (event->keyval == GDK_Escape)
5285         gtk_tree_view_stop_rubber_band (tree_view);
5286
5287       return TRUE;
5288     }
5289
5290   if (GTK_TREE_VIEW_FLAG_SET (tree_view, GTK_TREE_VIEW_IN_COLUMN_DRAG))
5291     {
5292       if (event->keyval == GDK_Escape)
5293         {
5294           tree_view->priv->cur_reorder = NULL;
5295           gtk_tree_view_button_release_drag_column (widget, NULL);
5296         }
5297       return TRUE;
5298     }
5299
5300   if (GTK_TREE_VIEW_FLAG_SET (tree_view, GTK_TREE_VIEW_HEADERS_VISIBLE))
5301     {
5302       GList *focus_column;
5303       gboolean rtl;
5304
5305       rtl = (gtk_widget_get_direction (GTK_WIDGET (tree_view)) == GTK_TEXT_DIR_RTL);
5306
5307       for (focus_column = tree_view->priv->columns;
5308            focus_column;
5309            focus_column = focus_column->next)
5310         {
5311           GtkTreeViewColumn *column = GTK_TREE_VIEW_COLUMN (focus_column->data);
5312
5313           if (gtk_widget_has_focus (column->button))
5314             break;
5315         }
5316
5317       if (focus_column &&
5318           (event->state & GDK_SHIFT_MASK) && (event->state & GDK_MOD1_MASK) &&
5319           (event->keyval == GDK_Left || event->keyval == GDK_KP_Left
5320            || event->keyval == GDK_Right || event->keyval == GDK_KP_Right))
5321         {
5322           GtkTreeViewColumn *column = GTK_TREE_VIEW_COLUMN (focus_column->data);
5323
5324           if (!column->resizable)
5325             {
5326               gtk_widget_error_bell (widget);
5327               return TRUE;
5328             }
5329
5330           if (event->keyval == (rtl ? GDK_Right : GDK_Left)
5331               || event->keyval == (rtl ? GDK_KP_Right : GDK_KP_Left))
5332             {
5333               gint old_width = column->resized_width;
5334
5335               column->resized_width = MAX (column->resized_width,
5336                                            column->width);
5337               column->resized_width -= 2;
5338               if (column->resized_width < 0)
5339                 column->resized_width = 0;
5340
5341               if (column->min_width == -1)
5342                 column->resized_width = MAX (column->button->requisition.width,
5343                                              column->resized_width);
5344               else
5345                 column->resized_width = MAX (column->min_width,
5346                                              column->resized_width);
5347
5348               if (column->max_width != -1)
5349                 column->resized_width = MIN (column->resized_width,
5350                                              column->max_width);
5351
5352               column->use_resized_width = TRUE;
5353
5354               if (column->resized_width != old_width)
5355                 gtk_widget_queue_resize (widget);
5356               else
5357                 gtk_widget_error_bell (widget);
5358             }
5359           else if (event->keyval == (rtl ? GDK_Left : GDK_Right)
5360                    || event->keyval == (rtl ? GDK_KP_Left : GDK_KP_Right))
5361             {
5362               gint old_width = column->resized_width;
5363
5364               column->resized_width = MAX (column->resized_width,
5365                                            column->width);
5366               column->resized_width += 2;
5367
5368               if (column->max_width != -1)
5369                 column->resized_width = MIN (column->resized_width,
5370                                              column->max_width);
5371
5372               column->use_resized_width = TRUE;
5373
5374               if (column->resized_width != old_width)
5375                 gtk_widget_queue_resize (widget);
5376               else
5377                 gtk_widget_error_bell (widget);
5378             }
5379
5380           return TRUE;
5381         }
5382
5383       if (focus_column &&
5384           (event->state & GDK_MOD1_MASK) &&
5385           (event->keyval == GDK_Left || event->keyval == GDK_KP_Left
5386            || event->keyval == GDK_Right || event->keyval == GDK_KP_Right
5387            || event->keyval == GDK_Home || event->keyval == GDK_KP_Home
5388            || event->keyval == GDK_End || event->keyval == GDK_KP_End))
5389         {
5390           GtkTreeViewColumn *column = GTK_TREE_VIEW_COLUMN (focus_column->data);
5391
5392           if (event->keyval == (rtl ? GDK_Right : GDK_Left)
5393               || event->keyval == (rtl ? GDK_KP_Right : GDK_KP_Left))
5394             {
5395               GtkTreeViewColumn *col;
5396               col = gtk_tree_view_get_drop_column (tree_view, column, DROP_LEFT);
5397               if (col != (GtkTreeViewColumn *)0x1)
5398                 gtk_tree_view_move_column_after (tree_view, column, col);
5399               else
5400                 gtk_widget_error_bell (widget);
5401             }
5402           else if (event->keyval == (rtl ? GDK_Left : GDK_Right)
5403                    || event->keyval == (rtl ? GDK_KP_Left : GDK_KP_Right))
5404             {
5405               GtkTreeViewColumn *col;
5406               col = gtk_tree_view_get_drop_column (tree_view, column, DROP_RIGHT);
5407               if (col != (GtkTreeViewColumn *)0x1)
5408                 gtk_tree_view_move_column_after (tree_view, column, col);
5409               else
5410                 gtk_widget_error_bell (widget);
5411             }
5412           else if (event->keyval == GDK_Home || event->keyval == GDK_KP_Home)
5413             {
5414               GtkTreeViewColumn *col;
5415               col = gtk_tree_view_get_drop_column (tree_view, column, DROP_HOME);
5416               if (col != (GtkTreeViewColumn *)0x1)
5417                 gtk_tree_view_move_column_after (tree_view, column, col);
5418               else
5419                 gtk_widget_error_bell (widget);
5420             }
5421           else if (event->keyval == GDK_End || event->keyval == GDK_KP_End)
5422             {
5423               GtkTreeViewColumn *col;
5424               col = gtk_tree_view_get_drop_column (tree_view, column, DROP_END);
5425               if (col != (GtkTreeViewColumn *)0x1)
5426                 gtk_tree_view_move_column_after (tree_view, column, col);
5427               else
5428                 gtk_widget_error_bell (widget);
5429             }
5430
5431           return TRUE;
5432         }
5433     }
5434
5435   /* Chain up to the parent class.  It handles the keybindings. */
5436   if (GTK_WIDGET_CLASS (gtk_tree_view_parent_class)->key_press_event (widget, event))
5437     return TRUE;
5438
5439   if (tree_view->priv->search_entry_avoid_unhandled_binding)
5440     {
5441       tree_view->priv->search_entry_avoid_unhandled_binding = FALSE;
5442       return FALSE;
5443     }
5444
5445   /* We pass the event to the search_entry.  If its text changes, then we start
5446    * the typeahead find capabilities. */
5447   if (gtk_widget_has_focus (GTK_WIDGET (tree_view))
5448       && tree_view->priv->enable_search
5449       && !tree_view->priv->search_custom_entry_set)
5450     {
5451       GdkEvent *new_event;
5452       char *old_text;
5453       const char *new_text;
5454       gboolean retval;
5455       GdkScreen *screen;
5456       gboolean text_modified;
5457       gulong popup_menu_id;
5458
5459       gtk_tree_view_ensure_interactive_directory (tree_view);
5460
5461       /* Make a copy of the current text */
5462       old_text = g_strdup (gtk_entry_get_text (GTK_ENTRY (tree_view->priv->search_entry)));
5463       new_event = gdk_event_copy ((GdkEvent *) event);
5464       g_object_unref (((GdkEventKey *) new_event)->window);
5465       ((GdkEventKey *) new_event)->window = g_object_ref (tree_view->priv->search_window->window);
5466       gtk_widget_realize (tree_view->priv->search_window);
5467
5468       popup_menu_id = g_signal_connect (tree_view->priv->search_entry,
5469                                         "popup-menu", G_CALLBACK (gtk_true),
5470                                         NULL);
5471
5472       /* Move the entry off screen */
5473       screen = gtk_widget_get_screen (GTK_WIDGET (tree_view));
5474       gtk_window_move (GTK_WINDOW (tree_view->priv->search_window),
5475                        gdk_screen_get_width (screen) + 1,
5476                        gdk_screen_get_height (screen) + 1);
5477       gtk_widget_show (tree_view->priv->search_window);
5478
5479       /* Send the event to the window.  If the preedit_changed signal is emitted
5480        * during this event, we will set priv->imcontext_changed  */
5481       tree_view->priv->imcontext_changed = FALSE;
5482       retval = gtk_widget_event (tree_view->priv->search_window, new_event);
5483       gdk_event_free (new_event);
5484       gtk_widget_hide (tree_view->priv->search_window);
5485
5486       g_signal_handler_disconnect (tree_view->priv->search_entry,
5487                                    popup_menu_id);
5488
5489       /* We check to make sure that the entry tried to handle the text, and that
5490        * the text has changed.
5491        */
5492       new_text = gtk_entry_get_text (GTK_ENTRY (tree_view->priv->search_entry));
5493       text_modified = strcmp (old_text, new_text) != 0;
5494       g_free (old_text);
5495       if (tree_view->priv->imcontext_changed ||    /* we're in a preedit */
5496           (retval && text_modified))               /* ...or the text was modified */
5497         {
5498           if (gtk_tree_view_real_start_interactive_search (tree_view, FALSE))
5499             {
5500               gtk_widget_grab_focus (GTK_WIDGET (tree_view));
5501               return TRUE;
5502             }
5503           else
5504             {
5505               gtk_entry_set_text (GTK_ENTRY (tree_view->priv->search_entry), "");
5506               return FALSE;
5507             }
5508         }
5509     }
5510
5511   return FALSE;
5512 }
5513
5514 static gboolean
5515 gtk_tree_view_key_release (GtkWidget   *widget,
5516                            GdkEventKey *event)
5517 {
5518   GtkTreeView *tree_view = GTK_TREE_VIEW (widget);
5519
5520   if (tree_view->priv->rubber_band_status)
5521     return TRUE;
5522
5523   return GTK_WIDGET_CLASS (gtk_tree_view_parent_class)->key_release_event (widget, event);
5524 }
5525
5526 /* FIXME Is this function necessary? Can I get an enter_notify event
5527  * w/o either an expose event or a mouse motion event?
5528  */
5529 static gboolean
5530 gtk_tree_view_enter_notify (GtkWidget        *widget,
5531                             GdkEventCrossing *event)
5532 {
5533   GtkTreeView *tree_view = GTK_TREE_VIEW (widget);
5534   GtkRBTree *tree;
5535   GtkRBNode *node;
5536   gint new_y;
5537
5538   /* Sanity check it */
5539   if (event->window != tree_view->priv->bin_window)
5540     return FALSE;
5541
5542   if (tree_view->priv->tree == NULL)
5543     return FALSE;
5544
5545   if (event->mode == GDK_CROSSING_GRAB ||
5546       event->mode == GDK_CROSSING_GTK_GRAB ||
5547       event->mode == GDK_CROSSING_GTK_UNGRAB ||
5548       event->mode == GDK_CROSSING_STATE_CHANGED)
5549     return TRUE;
5550
5551   /* find the node internally */
5552   new_y = TREE_WINDOW_Y_TO_RBTREE_Y(tree_view, event->y);
5553   if (new_y < 0)
5554     new_y = 0;
5555   _gtk_rbtree_find_offset (tree_view->priv->tree, new_y, &tree, &node);
5556
5557   tree_view->priv->event_last_x = event->x;
5558   tree_view->priv->event_last_y = event->y;
5559
5560   if ((tree_view->priv->button_pressed_node == NULL) ||
5561       (tree_view->priv->button_pressed_node == node))
5562     prelight_or_select (tree_view, tree, node, event->x, event->y);
5563
5564   return TRUE;
5565 }
5566
5567 static gboolean
5568 gtk_tree_view_leave_notify (GtkWidget        *widget,
5569                             GdkEventCrossing *event)
5570 {
5571   GtkTreeView *tree_view;
5572
5573   if (event->mode == GDK_CROSSING_GRAB)
5574     return TRUE;
5575
5576   tree_view = GTK_TREE_VIEW (widget);
5577
5578   if (tree_view->priv->prelight_node)
5579     _gtk_tree_view_queue_draw_node (tree_view,
5580                                    tree_view->priv->prelight_tree,
5581                                    tree_view->priv->prelight_node,
5582                                    NULL);
5583
5584   tree_view->priv->event_last_x = -10000;
5585   tree_view->priv->event_last_y = -10000;
5586
5587   prelight_or_select (tree_view,
5588                       NULL, NULL,
5589                       -1000, -1000); /* coords not possibly over an arrow */
5590
5591   return TRUE;
5592 }
5593
5594
5595 static gint
5596 gtk_tree_view_focus_out (GtkWidget     *widget,
5597                          GdkEventFocus *event)
5598 {
5599   GtkTreeView *tree_view;
5600
5601   tree_view = GTK_TREE_VIEW (widget);
5602
5603   gtk_widget_queue_draw (widget);
5604
5605   /* destroy interactive search dialog */
5606   if (tree_view->priv->search_window)
5607     gtk_tree_view_search_dialog_hide (tree_view->priv->search_window, tree_view);
5608
5609   return FALSE;
5610 }
5611
5612
5613 /* Incremental Reflow
5614  */
5615
5616 static void
5617 gtk_tree_view_node_queue_redraw (GtkTreeView *tree_view,
5618                                  GtkRBTree   *tree,
5619                                  GtkRBNode   *node)
5620 {
5621   gint y;
5622
5623   y = _gtk_rbtree_node_find_offset (tree, node)
5624     - tree_view->priv->vadjustment->value
5625     + TREE_VIEW_HEADER_HEIGHT (tree_view);
5626
5627   gtk_widget_queue_draw_area (GTK_WIDGET (tree_view),
5628                               0, y,
5629                               GTK_WIDGET (tree_view)->allocation.width,
5630                               GTK_RBNODE_GET_HEIGHT (node));
5631 }
5632
5633 static gboolean
5634 node_is_visible (GtkTreeView *tree_view,
5635                  GtkRBTree   *tree,
5636                  GtkRBNode   *node)
5637 {
5638   int y;
5639   int height;
5640
5641   y = _gtk_rbtree_node_find_offset (tree, node);
5642   height = ROW_HEIGHT (tree_view, GTK_RBNODE_GET_HEIGHT (node));
5643
5644   if (y >= tree_view->priv->vadjustment->value &&
5645       y + height <= (tree_view->priv->vadjustment->value
5646                      + tree_view->priv->vadjustment->page_size))
5647     return TRUE;
5648
5649   return FALSE;
5650 }
5651
5652 /* Returns TRUE if it updated the size
5653  */
5654 static gboolean
5655 validate_row (GtkTreeView *tree_view,
5656               GtkRBTree   *tree,
5657               GtkRBNode   *node,
5658               GtkTreeIter *iter,
5659               GtkTreePath *path)
5660 {
5661   GtkTreeViewColumn *column;
5662   GList *list, *first_column, *last_column;
5663   gint height = 0;
5664   gint horizontal_separator;
5665   gint vertical_separator;
5666   gint focus_line_width;
5667   gint depth = gtk_tree_path_get_depth (path);
5668   gboolean retval = FALSE;
5669   gboolean is_separator = FALSE;
5670   gboolean draw_vgrid_lines, draw_hgrid_lines;
5671   gint focus_pad;
5672   gint grid_line_width;
5673   gboolean wide_separators;
5674   gint separator_height;
5675
5676   /* double check the row needs validating */
5677   if (! GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_INVALID) &&
5678       ! GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_COLUMN_INVALID))
5679     return FALSE;
5680
5681   is_separator = row_is_separator (tree_view, iter, NULL);
5682
5683   gtk_widget_style_get (GTK_WIDGET (tree_view),
5684                         "focus-padding", &focus_pad,
5685                         "focus-line-width", &focus_line_width,
5686                         "horizontal-separator", &horizontal_separator,
5687                         "vertical-separator", &vertical_separator,
5688                         "grid-line-width", &grid_line_width,
5689                         "wide-separators",  &wide_separators,
5690                         "separator-height", &separator_height,
5691                         NULL);
5692
5693   draw_vgrid_lines =
5694     tree_view->priv->grid_lines == GTK_TREE_VIEW_GRID_LINES_VERTICAL
5695     || tree_view->priv->grid_lines == GTK_TREE_VIEW_GRID_LINES_BOTH;
5696   draw_hgrid_lines =
5697     tree_view->priv->grid_lines == GTK_TREE_VIEW_GRID_LINES_HORIZONTAL
5698     || tree_view->priv->grid_lines == GTK_TREE_VIEW_GRID_LINES_BOTH;
5699
5700   for (last_column = g_list_last (tree_view->priv->columns);
5701        last_column && !(GTK_TREE_VIEW_COLUMN (last_column->data)->visible);
5702        last_column = last_column->prev)
5703     ;
5704
5705   for (first_column = g_list_first (tree_view->priv->columns);
5706        first_column && !(GTK_TREE_VIEW_COLUMN (first_column->data)->visible);
5707        first_column = first_column->next)
5708     ;
5709
5710   for (list = tree_view->priv->columns; list; list = list->next)
5711     {
5712       gint tmp_width;
5713       gint tmp_height;
5714
5715       column = list->data;
5716
5717       if (! column->visible)
5718         continue;
5719
5720       if (GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_COLUMN_INVALID) && !column->dirty)
5721         continue;
5722
5723       gtk_tree_view_column_cell_set_cell_data (column, tree_view->priv->model, iter,
5724                                                GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_PARENT),
5725                                                node->children?TRUE:FALSE);
5726       gtk_tree_view_column_cell_get_size (column,
5727                                           NULL, NULL, NULL,
5728                                           &tmp_width, &tmp_height);
5729
5730       if (!is_separator)
5731         {
5732           tmp_height += vertical_separator;
5733           height = MAX (height, tmp_height);
5734           height = MAX (height, tree_view->priv->expander_size);
5735         }
5736       else
5737         {
5738           if (wide_separators)
5739             height = separator_height + 2 * focus_pad;
5740           else
5741             height = 2 + 2 * focus_pad;
5742         }
5743
5744       if (gtk_tree_view_is_expander_column (tree_view, column))
5745         {
5746           tmp_width = tmp_width + horizontal_separator + (depth - 1) * tree_view->priv->level_indentation;
5747
5748           if (TREE_VIEW_DRAW_EXPANDERS (tree_view))
5749             tmp_width += depth * tree_view->priv->expander_size;
5750         }
5751       else
5752         tmp_width = tmp_width + horizontal_separator;
5753
5754       if (draw_vgrid_lines)
5755         {
5756           if (list->data == first_column || list->data == last_column)
5757             tmp_width += grid_line_width / 2.0;
5758           else
5759             tmp_width += grid_line_width;
5760         }
5761
5762       if (tmp_width > column->requested_width)
5763         {
5764           retval = TRUE;
5765           column->requested_width = tmp_width;
5766         }
5767     }
5768
5769   if (draw_hgrid_lines)
5770     height += grid_line_width;
5771
5772   if (height != GTK_RBNODE_GET_HEIGHT (node))
5773     {
5774       retval = TRUE;
5775       _gtk_rbtree_node_set_height (tree, node, height);
5776     }
5777   _gtk_rbtree_node_mark_valid (tree, node);
5778   tree_view->priv->post_validation_flag = TRUE;
5779
5780   return retval;
5781 }
5782
5783
5784 static void
5785 validate_visible_area (GtkTreeView *tree_view)
5786 {
5787   GtkTreePath *path = NULL;
5788   GtkTreePath *above_path = NULL;
5789   GtkTreeIter iter;
5790   GtkRBTree *tree = NULL;
5791   GtkRBNode *node = NULL;
5792   gboolean need_redraw = FALSE;
5793   gboolean size_changed = FALSE;
5794   gint total_height;
5795   gint area_above = 0;
5796   gint area_below = 0;
5797
5798   if (tree_view->priv->tree == NULL)
5799     return;
5800
5801   if (! GTK_RBNODE_FLAG_SET (tree_view->priv->tree->root, GTK_RBNODE_DESCENDANTS_INVALID) &&
5802       tree_view->priv->scroll_to_path == NULL)
5803     return;
5804
5805   total_height = GTK_WIDGET (tree_view)->allocation.height - TREE_VIEW_HEADER_HEIGHT (tree_view);
5806
5807   if (total_height == 0)
5808     return;
5809
5810   /* First, we check to see if we need to scroll anywhere
5811    */
5812   if (tree_view->priv->scroll_to_path)
5813     {
5814       path = gtk_tree_row_reference_get_path (tree_view->priv->scroll_to_path);
5815       if (path && !_gtk_tree_view_find_node (tree_view, path, &tree, &node))
5816         {
5817           /* we are going to scroll, and will update dy */
5818           gtk_tree_model_get_iter (tree_view->priv->model, &iter, path);
5819           if (GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_INVALID) ||
5820               GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_COLUMN_INVALID))
5821             {
5822               _gtk_tree_view_queue_draw_node (tree_view, tree, node, NULL);
5823               if (validate_row (tree_view, tree, node, &iter, path))
5824                 size_changed = TRUE;
5825             }
5826
5827           if (tree_view->priv->scroll_to_use_align)
5828             {
5829               gint height = ROW_HEIGHT (tree_view, GTK_RBNODE_GET_HEIGHT (node));
5830               area_above = (total_height - height) *
5831                 tree_view->priv->scroll_to_row_align;
5832               area_below = total_height - area_above - height;
5833               area_above = MAX (area_above, 0);
5834               area_below = MAX (area_below, 0);
5835             }
5836           else
5837             {
5838               /* two cases:
5839                * 1) row not visible
5840                * 2) row visible
5841                */
5842               gint dy;
5843               gint height = ROW_HEIGHT (tree_view, GTK_RBNODE_GET_HEIGHT (node));
5844
5845               dy = _gtk_rbtree_node_find_offset (tree, node);
5846
5847               if (dy >= tree_view->priv->vadjustment->value &&
5848                   dy + height <= (tree_view->priv->vadjustment->value
5849                                   + tree_view->priv->vadjustment->page_size))
5850                 {
5851                   /* row visible: keep the row at the same position */
5852                   area_above = dy - tree_view->priv->vadjustment->value;
5853                   area_below = (tree_view->priv->vadjustment->value +
5854                                 tree_view->priv->vadjustment->page_size)
5855                                - dy - height;
5856                 }
5857               else
5858                 {
5859                   /* row not visible */
5860                   if (dy >= 0
5861                       && dy + height <= tree_view->priv->vadjustment->page_size)
5862                     {
5863                       /* row at the beginning -- fixed */
5864                       area_above = dy;
5865                       area_below = tree_view->priv->vadjustment->page_size
5866                                    - area_above - height;
5867                     }
5868                   else if (dy >= (tree_view->priv->vadjustment->upper -
5869                                   tree_view->priv->vadjustment->page_size))
5870                     {
5871                       /* row at the end -- fixed */
5872                       area_above = dy - (tree_view->priv->vadjustment->upper -
5873                                    tree_view->priv->vadjustment->page_size);
5874                       area_below = tree_view->priv->vadjustment->page_size -
5875                                    area_above - height;
5876
5877                       if (area_below < 0)
5878                         {
5879                           area_above = tree_view->priv->vadjustment->page_size - height;
5880                           area_below = 0;
5881                         }
5882                     }
5883                   else
5884                     {
5885                       /* row somewhere in the middle, bring it to the top
5886                        * of the view
5887                        */
5888                       area_above = 0;
5889                       area_below = total_height - height;
5890                     }
5891                 }
5892             }
5893         }
5894       else
5895         /* the scroll to isn't valid; ignore it.
5896          */
5897         {
5898           if (tree_view->priv->scroll_to_path && !path)
5899             {
5900               gtk_tree_row_reference_free (tree_view->priv->scroll_to_path);
5901               tree_view->priv->scroll_to_path = NULL;
5902             }
5903           if (path)
5904             gtk_tree_path_free (path);
5905           path = NULL;
5906         }
5907     }
5908
5909   /* We didn't have a scroll_to set, so we just handle things normally
5910    */
5911   if (path == NULL)
5912     {
5913       gint offset;
5914
5915       offset = _gtk_rbtree_find_offset (tree_view->priv->tree,
5916                                         TREE_WINDOW_Y_TO_RBTREE_Y (tree_view, 0),
5917                                         &tree, &node);
5918       if (node == NULL)
5919         {
5920           /* In this case, nothing has been validated */
5921           path = gtk_tree_path_new_first ();
5922           _gtk_tree_view_find_node (tree_view, path, &tree, &node);
5923         }
5924       else
5925         {
5926           path = _gtk_tree_view_find_path (tree_view, tree, node);
5927           total_height += offset;
5928         }
5929
5930       gtk_tree_model_get_iter (tree_view->priv->model, &iter, path);
5931
5932       if (GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_INVALID) ||
5933           GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_COLUMN_INVALID))
5934         {
5935           _gtk_tree_view_queue_draw_node (tree_view, tree, node, NULL);
5936           if (validate_row (tree_view, tree, node, &iter, path))
5937             size_changed = TRUE;
5938         }
5939       area_above = 0;
5940       area_below = total_height - ROW_HEIGHT (tree_view, GTK_RBNODE_GET_HEIGHT (node));
5941     }
5942
5943   above_path = gtk_tree_path_copy (path);
5944
5945   /* if we do not validate any row above the new top_row, we will make sure
5946    * that the row immediately above top_row has been validated. (if we do not
5947    * do this, _gtk_rbtree_find_offset will find the row above top_row, because
5948    * when invalidated that row's height will be zero. and this will mess up
5949    * scrolling).
5950    */
5951   if (area_above == 0)
5952     {
5953       GtkRBTree *tmptree;
5954       GtkRBNode *tmpnode;
5955
5956       _gtk_tree_view_find_node (tree_view, above_path, &tmptree, &tmpnode);
5957       _gtk_rbtree_prev_full (tmptree, tmpnode, &tmptree, &tmpnode);
5958
5959       if (tmpnode)
5960         {
5961           GtkTreePath *tmppath;
5962           GtkTreeIter tmpiter;
5963
5964           tmppath = _gtk_tree_view_find_path (tree_view, tmptree, tmpnode);
5965           gtk_tree_model_get_iter (tree_view->priv->model, &tmpiter, tmppath);
5966
5967           if (GTK_RBNODE_FLAG_SET (tmpnode, GTK_RBNODE_INVALID) ||
5968               GTK_RBNODE_FLAG_SET (tmpnode, GTK_RBNODE_COLUMN_INVALID))
5969             {
5970               _gtk_tree_view_queue_draw_node (tree_view, tmptree, tmpnode, NULL);
5971               if (validate_row (tree_view, tmptree, tmpnode, &tmpiter, tmppath))
5972                 size_changed = TRUE;
5973             }
5974
5975           gtk_tree_path_free (tmppath);
5976         }
5977     }
5978
5979   /* Now, we walk forwards and backwards, measuring rows. Unfortunately,
5980    * backwards is much slower then forward, as there is no iter_prev function.
5981    * We go forwards first in case we run out of tree.  Then we go backwards to
5982    * fill out the top.
5983    */
5984   while (node && area_below > 0)
5985     {
5986       if (node->children)
5987         {
5988           GtkTreeIter parent = iter;
5989           gboolean has_child;
5990
5991           tree = node->children;
5992           node = tree->root;
5993
5994           g_assert (node != tree->nil);
5995
5996           while (node->left != tree->nil)
5997             node = node->left;
5998           has_child = gtk_tree_model_iter_children (tree_view->priv->model,
5999                                                     &iter,
6000                                                     &parent);
6001           TREE_VIEW_INTERNAL_ASSERT_VOID (has_child);
6002           gtk_tree_path_down (path);
6003         }
6004       else
6005         {
6006           gboolean done = FALSE;
6007           do
6008             {
6009               node = _gtk_rbtree_next (tree, node);
6010               if (node != NULL)
6011                 {
6012                   gboolean has_next = gtk_tree_model_iter_next (tree_view->priv->model, &iter);
6013                   done = TRUE;
6014                   gtk_tree_path_next (path);
6015
6016                   /* Sanity Check! */
6017                   TREE_VIEW_INTERNAL_ASSERT_VOID (has_next);
6018                 }
6019               else
6020                 {
6021                   GtkTreeIter parent_iter = iter;
6022                   gboolean has_parent;
6023
6024                   node = tree->parent_node;
6025                   tree = tree->parent_tree;
6026                   if (tree == NULL)
6027                     break;
6028                   has_parent = gtk_tree_model_iter_parent (tree_view->priv->model,
6029                                                            &iter,
6030                                                            &parent_iter);
6031                   gtk_tree_path_up (path);
6032
6033                   /* Sanity check */
6034                   TREE_VIEW_INTERNAL_ASSERT_VOID (has_parent);
6035                 }
6036             }
6037           while (!done);
6038         }
6039
6040       if (!node)
6041         break;
6042
6043       if (GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_INVALID) ||
6044           GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_COLUMN_INVALID))
6045         {
6046           _gtk_tree_view_queue_draw_node (tree_view, tree, node, NULL);
6047           if (validate_row (tree_view, tree, node, &iter, path))
6048               size_changed = TRUE;
6049         }
6050
6051       area_below -= ROW_HEIGHT (tree_view, GTK_RBNODE_GET_HEIGHT (node));
6052     }
6053   gtk_tree_path_free (path);
6054
6055   /* If we ran out of tree, and have extra area_below left, we need to add it
6056    * to area_above */
6057   if (area_below > 0)
6058     area_above += area_below;
6059
6060   _gtk_tree_view_find_node (tree_view, above_path, &tree, &node);
6061
6062   /* We walk backwards */
6063   while (area_above > 0)
6064     {
6065       _gtk_rbtree_prev_full (tree, node, &tree, &node);
6066
6067       /* Always find the new path in the tree.  We cannot just assume
6068        * a gtk_tree_path_prev() is enough here, as there might be children
6069        * in between this node and the previous sibling node.  If this
6070        * appears to be a performance hotspot in profiles, we can look into
6071        * intrigate logic for keeping path, node and iter in sync like
6072        * we do for forward walks.  (Which will be hard because of the lacking
6073        * iter_prev).
6074        */
6075
6076       if (node == NULL)
6077         break;
6078
6079       gtk_tree_path_free (above_path);
6080       above_path = _gtk_tree_view_find_path (tree_view, tree, node);
6081
6082       gtk_tree_model_get_iter (tree_view->priv->model, &iter, above_path);
6083
6084       if (GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_INVALID) ||
6085           GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_COLUMN_INVALID))
6086         {
6087           _gtk_tree_view_queue_draw_node (tree_view, tree, node, NULL);
6088           if (validate_row (tree_view, tree, node, &iter, above_path))
6089             size_changed = TRUE;
6090         }
6091       area_above -= ROW_HEIGHT (tree_view, GTK_RBNODE_GET_HEIGHT (node));
6092     }
6093
6094   /* if we scrolled to a path, we need to set the dy here,
6095    * and sync the top row accordingly
6096    */
6097   if (tree_view->priv->scroll_to_path)
6098     {
6099       gtk_tree_view_set_top_row (tree_view, above_path, -area_above);
6100       gtk_tree_view_top_row_to_dy (tree_view);
6101
6102       need_redraw = TRUE;
6103     }
6104   else if (tree_view->priv->height <= tree_view->priv->vadjustment->page_size)
6105     {
6106       /* when we are not scrolling, we should never set dy to something
6107        * else than zero. we update top_row to be in sync with dy = 0.
6108        */
6109       gtk_adjustment_set_value (GTK_ADJUSTMENT (tree_view->priv->vadjustment), 0);
6110       gtk_tree_view_dy_to_top_row (tree_view);
6111     }
6112   else if (tree_view->priv->vadjustment->value + tree_view->priv->vadjustment->page_size > tree_view->priv->height)
6113     {
6114       gtk_adjustment_set_value (GTK_ADJUSTMENT (tree_view->priv->vadjustment), tree_view->priv->height - tree_view->priv->vadjustment->page_size);
6115       gtk_tree_view_dy_to_top_row (tree_view);
6116     }
6117   else
6118     gtk_tree_view_top_row_to_dy (tree_view);
6119
6120   /* update width/height and queue a resize */
6121   if (size_changed)
6122     {
6123       GtkRequisition requisition;
6124
6125       /* We temporarily guess a size, under the assumption that it will be the
6126        * same when we get our next size_allocate.  If we don't do this, we'll be
6127        * in an inconsistent state if we call top_row_to_dy. */
6128
6129       gtk_widget_size_request (GTK_WIDGET (tree_view), &requisition);
6130       tree_view->priv->hadjustment->upper = MAX (tree_view->priv->hadjustment->upper, (gfloat)requisition.width);
6131       tree_view->priv->vadjustment->upper = MAX (tree_view->priv->vadjustment->upper, (gfloat)requisition.height);
6132       gtk_adjustment_changed (tree_view->priv->hadjustment);
6133       gtk_adjustment_changed (tree_view->priv->vadjustment);
6134       gtk_widget_queue_resize (GTK_WIDGET (tree_view));
6135     }
6136
6137   if (tree_view->priv->scroll_to_path)
6138     {
6139       gtk_tree_row_reference_free (tree_view->priv->scroll_to_path);
6140       tree_view->priv->scroll_to_path = NULL;
6141     }
6142
6143   if (above_path)
6144     gtk_tree_path_free (above_path);
6145
6146   if (tree_view->priv->scroll_to_column)
6147     {
6148       tree_view->priv->scroll_to_column = NULL;
6149     }
6150   if (need_redraw)
6151     gtk_widget_queue_draw (GTK_WIDGET (tree_view));
6152 }
6153
6154 static void
6155 initialize_fixed_height_mode (GtkTreeView *tree_view)
6156 {
6157   if (!tree_view->priv->tree)
6158     return;
6159
6160   if (tree_view->priv->fixed_height < 0)
6161     {
6162       GtkTreeIter iter;
6163       GtkTreePath *path;
6164
6165       GtkRBTree *tree = NULL;
6166       GtkRBNode *node = NULL;
6167
6168       tree = tree_view->priv->tree;
6169       node = tree->root;
6170
6171       path = _gtk_tree_view_find_path (tree_view, tree, node);
6172       gtk_tree_model_get_iter (tree_view->priv->model, &iter, path);
6173
6174       validate_row (tree_view, tree, node, &iter, path);
6175
6176       gtk_tree_path_free (path);
6177
6178       tree_view->priv->fixed_height = ROW_HEIGHT (tree_view, GTK_RBNODE_GET_HEIGHT (node));
6179     }
6180
6181    _gtk_rbtree_set_fixed_height (tree_view->priv->tree,
6182                                  tree_view->priv->fixed_height, TRUE);
6183 }
6184
6185 /* Our strategy for finding nodes to validate is a little convoluted.  We find
6186  * the left-most uninvalidated node.  We then try walking right, validating
6187  * nodes.  Once we find a valid node, we repeat the previous process of finding
6188  * the first invalid node.
6189  */
6190
6191 static gboolean
6192 do_validate_rows (GtkTreeView *tree_view, gboolean queue_resize)
6193 {
6194   GtkRBTree *tree = NULL;
6195   GtkRBNode *node = NULL;
6196   gboolean validated_area = FALSE;
6197   gint retval = TRUE;
6198   GtkTreePath *path = NULL;
6199   GtkTreeIter iter;
6200   GTimer *timer;
6201   gint i = 0;
6202
6203   gint prev_height = -1;
6204   gboolean fixed_height = TRUE;
6205
6206   g_assert (tree_view);
6207
6208   if (tree_view->priv->tree == NULL)
6209       return FALSE;
6210
6211   if (tree_view->priv->fixed_height_mode)
6212     {
6213       if (tree_view->priv->fixed_height < 0)
6214         initialize_fixed_height_mode (tree_view);
6215
6216       return FALSE;
6217     }
6218
6219   timer = g_timer_new ();
6220   g_timer_start (timer);
6221
6222   do
6223     {
6224       if (! GTK_RBNODE_FLAG_SET (tree_view->priv->tree->root, GTK_RBNODE_DESCENDANTS_INVALID))
6225         {
6226           retval = FALSE;
6227           goto done;
6228         }
6229
6230       if (path != NULL)
6231         {
6232           node = _gtk_rbtree_next (tree, node);
6233           if (node != NULL)
6234             {
6235               TREE_VIEW_INTERNAL_ASSERT (gtk_tree_model_iter_next (tree_view->priv->model, &iter), FALSE);
6236               gtk_tree_path_next (path);
6237             }
6238           else
6239             {
6240               gtk_tree_path_free (path);
6241               path = NULL;
6242             }
6243         }
6244
6245       if (path == NULL)
6246         {
6247           tree = tree_view->priv->tree;
6248           node = tree_view->priv->tree->root;
6249
6250           g_assert (GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_DESCENDANTS_INVALID));
6251
6252           do
6253             {
6254               if (node->left != tree->nil &&
6255                   GTK_RBNODE_FLAG_SET (node->left, GTK_RBNODE_DESCENDANTS_INVALID))
6256                 {
6257                   node = node->left;
6258                 }
6259               else if (node->right != tree->nil &&
6260                        GTK_RBNODE_FLAG_SET (node->right, GTK_RBNODE_DESCENDANTS_INVALID))
6261                 {
6262                   node = node->right;
6263                 }
6264               else if (GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_INVALID) ||
6265                        GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_COLUMN_INVALID))
6266                 {
6267                   break;
6268                 }
6269               else if (node->children != NULL)
6270                 {
6271                   tree = node->children;
6272                   node = tree->root;
6273                 }
6274               else
6275                 /* RBTree corruption!  All bad */
6276                 g_assert_not_reached ();
6277             }
6278           while (TRUE);
6279           path = _gtk_tree_view_find_path (tree_view, tree, node);
6280           gtk_tree_model_get_iter (tree_view->priv->model, &iter, path);
6281         }
6282
6283       validated_area = validate_row (tree_view, tree, node, &iter, path) ||
6284                        validated_area;
6285
6286       if (!tree_view->priv->fixed_height_check)
6287         {
6288           gint height;
6289
6290           height = ROW_HEIGHT (tree_view, GTK_RBNODE_GET_HEIGHT (node));
6291           if (prev_height < 0)
6292             prev_height = height;
6293           else if (prev_height != height)
6294             fixed_height = FALSE;
6295         }
6296
6297       i++;
6298     }
6299   while (g_timer_elapsed (timer, NULL) < GTK_TREE_VIEW_TIME_MS_PER_IDLE / 1000.);
6300
6301   if (!tree_view->priv->fixed_height_check)
6302    {
6303      if (fixed_height)
6304        _gtk_rbtree_set_fixed_height (tree_view->priv->tree, prev_height, FALSE);
6305
6306      tree_view->priv->fixed_height_check = 1;
6307    }
6308
6309  done:
6310   if (validated_area)
6311     {
6312       GtkRequisition requisition;
6313       /* We temporarily guess a size, under the assumption that it will be the
6314        * same when we get our next size_allocate.  If we don't do this, we'll be
6315        * in an inconsistent state when we call top_row_to_dy. */
6316
6317       gtk_widget_size_request (GTK_WIDGET (tree_view), &requisition);
6318       tree_view->priv->hadjustment->upper = MAX (tree_view->priv->hadjustment->upper, (gfloat)requisition.width);
6319       tree_view->priv->vadjustment->upper = MAX (tree_view->priv->vadjustment->upper, (gfloat)requisition.height);
6320       gtk_adjustment_changed (tree_view->priv->hadjustment);
6321       gtk_adjustment_changed (tree_view->priv->vadjustment);
6322
6323       if (queue_resize)
6324         gtk_widget_queue_resize (GTK_WIDGET (tree_view));
6325     }
6326
6327   if (path) gtk_tree_path_free (path);
6328   g_timer_destroy (timer);
6329
6330   return retval;
6331 }
6332
6333 static gboolean
6334 validate_rows (GtkTreeView *tree_view)
6335 {
6336   gboolean retval;
6337
6338   retval = do_validate_rows (tree_view, TRUE);
6339
6340   if (! retval && tree_view->priv->validate_rows_timer)
6341     {
6342       g_source_remove (tree_view->priv->validate_rows_timer);
6343       tree_view->priv->validate_rows_timer = 0;
6344     }
6345
6346   return retval;
6347 }
6348
6349 static gboolean
6350 validate_rows_handler (GtkTreeView *tree_view)
6351 {
6352   gboolean retval;
6353
6354   retval = do_validate_rows (tree_view, TRUE);
6355   if (! retval && tree_view->priv->validate_rows_timer)
6356     {
6357       g_source_remove (tree_view->priv->validate_rows_timer);
6358       tree_view->priv->validate_rows_timer = 0;
6359     }
6360
6361   return retval;
6362 }
6363
6364 static gboolean
6365 do_presize_handler (GtkTreeView *tree_view)
6366 {
6367   if (tree_view->priv->mark_rows_col_dirty)
6368     {
6369       if (tree_view->priv->tree)
6370         _gtk_rbtree_column_invalid (tree_view->priv->tree);
6371       tree_view->priv->mark_rows_col_dirty = FALSE;
6372     }
6373   validate_visible_area (tree_view);
6374   tree_view->priv->presize_handler_timer = 0;
6375
6376   if (tree_view->priv->fixed_height_mode)
6377     {
6378       GtkRequisition requisition;
6379
6380       gtk_widget_size_request (GTK_WIDGET (tree_view), &requisition);
6381
6382       tree_view->priv->hadjustment->upper = MAX (tree_view->priv->hadjustment->upper, (gfloat)requisition.width);
6383       tree_view->priv->vadjustment->upper = MAX (tree_view->priv->vadjustment->upper, (gfloat)requisition.height);
6384       gtk_adjustment_changed (tree_view->priv->hadjustment);
6385       gtk_adjustment_changed (tree_view->priv->vadjustment);
6386       gtk_widget_queue_resize (GTK_WIDGET (tree_view));
6387     }
6388
6389   return FALSE;
6390 }
6391
6392 static gboolean
6393 presize_handler_callback (gpointer data)
6394 {
6395   do_presize_handler (GTK_TREE_VIEW (data));
6396
6397   return FALSE;
6398 }
6399
6400 static void
6401 install_presize_handler (GtkTreeView *tree_view)
6402 {
6403   if (! gtk_widget_get_realized (GTK_WIDGET (tree_view)))
6404     return;
6405
6406   if (! tree_view->priv->presize_handler_timer)
6407     {
6408       tree_view->priv->presize_handler_timer =
6409         gdk_threads_add_idle_full (GTK_PRIORITY_RESIZE - 2, presize_handler_callback, tree_view, NULL);
6410     }
6411   if (! tree_view->priv->validate_rows_timer)
6412     {
6413       tree_view->priv->validate_rows_timer =
6414         gdk_threads_add_idle_full (GTK_TREE_VIEW_PRIORITY_VALIDATE, (GSourceFunc) validate_rows_handler, tree_view, NULL);
6415     }
6416 }
6417
6418 static gboolean
6419 scroll_sync_handler (GtkTreeView *tree_view)
6420 {
6421   if (tree_view->priv->height <= tree_view->priv->vadjustment->page_size)
6422     gtk_adjustment_set_value (GTK_ADJUSTMENT (tree_view->priv->vadjustment), 0);
6423   else if (gtk_tree_row_reference_valid (tree_view->priv->top_row))
6424     gtk_tree_view_top_row_to_dy (tree_view);
6425   else
6426     gtk_tree_view_dy_to_top_row (tree_view);
6427
6428   tree_view->priv->scroll_sync_timer = 0;
6429
6430   return FALSE;
6431 }
6432
6433 static void
6434 install_scroll_sync_handler (GtkTreeView *tree_view)
6435 {
6436   if (!gtk_widget_get_realized (GTK_WIDGET (tree_view)))
6437     return;
6438
6439   if (!tree_view->priv->scroll_sync_timer)
6440     {
6441       tree_view->priv->scroll_sync_timer =
6442         gdk_threads_add_idle_full (GTK_TREE_VIEW_PRIORITY_SCROLL_SYNC, (GSourceFunc) scroll_sync_handler, tree_view, NULL);
6443     }
6444 }
6445
6446 static void
6447 gtk_tree_view_set_top_row (GtkTreeView *tree_view,
6448                            GtkTreePath *path,
6449                            gint         offset)
6450 {
6451   gtk_tree_row_reference_free (tree_view->priv->top_row);
6452
6453   if (!path)
6454     {
6455       tree_view->priv->top_row = NULL;
6456       tree_view->priv->top_row_dy = 0;
6457     }
6458   else
6459     {
6460       tree_view->priv->top_row = gtk_tree_row_reference_new_proxy (G_OBJECT (tree_view), tree_view->priv->model, path);
6461       tree_view->priv->top_row_dy = offset;
6462     }
6463 }
6464
6465 /* Always call this iff dy is in the visible range.  If the tree is empty, then
6466  * it's set to be NULL, and top_row_dy is 0;
6467  */
6468 static void
6469 gtk_tree_view_dy_to_top_row (GtkTreeView *tree_view)
6470 {
6471   gint offset;
6472   GtkTreePath *path;
6473   GtkRBTree *tree;
6474   GtkRBNode *node;
6475
6476   if (tree_view->priv->tree == NULL)
6477     {
6478       gtk_tree_view_set_top_row (tree_view, NULL, 0);
6479     }
6480   else
6481     {
6482       offset = _gtk_rbtree_find_offset (tree_view->priv->tree,
6483                                         tree_view->priv->dy,
6484                                         &tree, &node);
6485
6486       if (tree == NULL)
6487         {
6488           gtk_tree_view_set_top_row (tree_view, NULL, 0);
6489         }
6490       else
6491         {
6492           path = _gtk_tree_view_find_path (tree_view, tree, node);
6493           gtk_tree_view_set_top_row (tree_view, path, offset);
6494           gtk_tree_path_free (path);
6495         }
6496     }
6497 }
6498
6499 static void
6500 gtk_tree_view_top_row_to_dy (GtkTreeView *tree_view)
6501 {
6502   GtkTreePath *path;
6503   GtkRBTree *tree;
6504   GtkRBNode *node;
6505   int new_dy;
6506
6507   /* Avoid recursive calls */
6508   if (tree_view->priv->in_top_row_to_dy)
6509     return;
6510
6511   if (tree_view->priv->top_row)
6512     path = gtk_tree_row_reference_get_path (tree_view->priv->top_row);
6513   else
6514     path = NULL;
6515
6516   if (!path)
6517     tree = NULL;
6518   else
6519     _gtk_tree_view_find_node (tree_view, path, &tree, &node);
6520
6521   if (path)
6522     gtk_tree_path_free (path);
6523
6524   if (tree == NULL)
6525     {
6526       /* keep dy and set new toprow */
6527       gtk_tree_row_reference_free (tree_view->priv->top_row);
6528       tree_view->priv->top_row = NULL;
6529       tree_view->priv->top_row_dy = 0;
6530       /* DO NOT install the idle handler */
6531       gtk_tree_view_dy_to_top_row (tree_view);
6532       return;
6533     }
6534
6535   if (ROW_HEIGHT (tree_view, BACKGROUND_HEIGHT (node))
6536       < tree_view->priv->top_row_dy)
6537     {
6538       /* new top row -- do NOT install the idle handler */
6539       gtk_tree_view_dy_to_top_row (tree_view);
6540       return;
6541     }
6542
6543   new_dy = _gtk_rbtree_node_find_offset (tree, node);
6544   new_dy += tree_view->priv->top_row_dy;
6545
6546   if (new_dy + tree_view->priv->vadjustment->page_size > tree_view->priv->height)
6547     new_dy = tree_view->priv->height - tree_view->priv->vadjustment->page_size;
6548
6549   new_dy = MAX (0, new_dy);
6550
6551   tree_view->priv->in_top_row_to_dy = TRUE;
6552   gtk_adjustment_set_value (tree_view->priv->vadjustment, (gdouble)new_dy);
6553   tree_view->priv->in_top_row_to_dy = FALSE;
6554 }
6555
6556
6557 void
6558 _gtk_tree_view_install_mark_rows_col_dirty (GtkTreeView *tree_view)
6559 {
6560   tree_view->priv->mark_rows_col_dirty = TRUE;
6561
6562   install_presize_handler (tree_view);
6563 }
6564
6565 /*
6566  * This function works synchronously (due to the while (validate_rows...)
6567  * loop).
6568  *
6569  * There was a check for column_type != GTK_TREE_VIEW_COLUMN_AUTOSIZE
6570  * here. You now need to check that yourself.
6571  */
6572 void
6573 _gtk_tree_view_column_autosize (GtkTreeView *tree_view,
6574                                 GtkTreeViewColumn *column)
6575 {
6576   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
6577   g_return_if_fail (GTK_IS_TREE_VIEW_COLUMN (column));
6578
6579   _gtk_tree_view_column_cell_set_dirty (column, FALSE);
6580
6581   do_presize_handler (tree_view);
6582   while (validate_rows (tree_view));
6583
6584   gtk_widget_queue_resize (GTK_WIDGET (tree_view));
6585 }
6586
6587 /* Drag-and-drop */
6588
6589 static void
6590 set_source_row (GdkDragContext *context,
6591                 GtkTreeModel   *model,
6592                 GtkTreePath    *source_row)
6593 {
6594   g_object_set_data_full (G_OBJECT (context),
6595                           I_("gtk-tree-view-source-row"),
6596                           source_row ? gtk_tree_row_reference_new (model, source_row) : NULL,
6597                           (GDestroyNotify) (source_row ? gtk_tree_row_reference_free : NULL));
6598 }
6599
6600 static GtkTreePath*
6601 get_source_row (GdkDragContext *context)
6602 {
6603   GtkTreeRowReference *ref =
6604     g_object_get_data (G_OBJECT (context), "gtk-tree-view-source-row");
6605
6606   if (ref)
6607     return gtk_tree_row_reference_get_path (ref);
6608   else
6609     return NULL;
6610 }
6611
6612 typedef struct
6613 {
6614   GtkTreeRowReference *dest_row;
6615   guint                path_down_mode   : 1;
6616   guint                empty_view_drop  : 1;
6617   guint                drop_append_mode : 1;
6618 }
6619 DestRow;
6620
6621 static void
6622 dest_row_free (gpointer data)
6623 {
6624   DestRow *dr = (DestRow *)data;
6625
6626   gtk_tree_row_reference_free (dr->dest_row);
6627   g_slice_free (DestRow, dr);
6628 }
6629
6630 static void
6631 set_dest_row (GdkDragContext *context,
6632               GtkTreeModel   *model,
6633               GtkTreePath    *dest_row,
6634               gboolean        path_down_mode,
6635               gboolean        empty_view_drop,
6636               gboolean        drop_append_mode)
6637 {
6638   DestRow *dr;
6639
6640   if (!dest_row)
6641     {
6642       g_object_set_data_full (G_OBJECT (context), I_("gtk-tree-view-dest-row"),
6643                               NULL, NULL);
6644       return;
6645     }
6646
6647   dr = g_slice_new (DestRow);
6648
6649   dr->dest_row = gtk_tree_row_reference_new (model, dest_row);
6650   dr->path_down_mode = path_down_mode != FALSE;
6651   dr->empty_view_drop = empty_view_drop != FALSE;
6652   dr->drop_append_mode = drop_append_mode != FALSE;
6653
6654   g_object_set_data_full (G_OBJECT (context), I_("gtk-tree-view-dest-row"),
6655                           dr, (GDestroyNotify) dest_row_free);
6656 }
6657
6658 static GtkTreePath*
6659 get_dest_row (GdkDragContext *context,
6660               gboolean       *path_down_mode)
6661 {
6662   DestRow *dr =
6663     g_object_get_data (G_OBJECT (context), "gtk-tree-view-dest-row");
6664
6665   if (dr)
6666     {
6667       GtkTreePath *path = NULL;
6668
6669       if (path_down_mode)
6670         *path_down_mode = dr->path_down_mode;
6671
6672       if (dr->dest_row)
6673         path = gtk_tree_row_reference_get_path (dr->dest_row);
6674       else if (dr->empty_view_drop)
6675         path = gtk_tree_path_new_from_indices (0, -1);
6676       else
6677         path = NULL;
6678
6679       if (path && dr->drop_append_mode)
6680         gtk_tree_path_next (path);
6681
6682       return path;
6683     }
6684   else
6685     return NULL;
6686 }
6687
6688 /* Get/set whether drag_motion requested the drag data and
6689  * drag_data_received should thus not actually insert the data,
6690  * since the data doesn't result from a drop.
6691  */
6692 static void
6693 set_status_pending (GdkDragContext *context,
6694                     GdkDragAction   suggested_action)
6695 {
6696   g_object_set_data (G_OBJECT (context),
6697                      I_("gtk-tree-view-status-pending"),
6698                      GINT_TO_POINTER (suggested_action));
6699 }
6700
6701 static GdkDragAction
6702 get_status_pending (GdkDragContext *context)
6703 {
6704   return GPOINTER_TO_INT (g_object_get_data (G_OBJECT (context),
6705                                              "gtk-tree-view-status-pending"));
6706 }
6707
6708 static TreeViewDragInfo*
6709 get_info (GtkTreeView *tree_view)
6710 {
6711   return g_object_get_data (G_OBJECT (tree_view), "gtk-tree-view-drag-info");
6712 }
6713
6714 static void
6715 destroy_info (TreeViewDragInfo *di)
6716 {
6717   g_slice_free (TreeViewDragInfo, di);
6718 }
6719
6720 static TreeViewDragInfo*
6721 ensure_info (GtkTreeView *tree_view)
6722 {
6723   TreeViewDragInfo *di;
6724
6725   di = get_info (tree_view);
6726
6727   if (di == NULL)
6728     {
6729       di = g_slice_new0 (TreeViewDragInfo);
6730
6731       g_object_set_data_full (G_OBJECT (tree_view),
6732                               I_("gtk-tree-view-drag-info"),
6733                               di,
6734                               (GDestroyNotify) destroy_info);
6735     }
6736
6737   return di;
6738 }
6739
6740 static void
6741 remove_info (GtkTreeView *tree_view)
6742 {
6743   g_object_set_data (G_OBJECT (tree_view), I_("gtk-tree-view-drag-info"), NULL);
6744 }
6745
6746 #if 0
6747 static gint
6748 drag_scan_timeout (gpointer data)
6749 {
6750   GtkTreeView *tree_view;
6751   gint x, y;
6752   GdkModifierType state;
6753   GtkTreePath *path = NULL;
6754   GtkTreeViewColumn *column = NULL;
6755   GdkRectangle visible_rect;
6756
6757   GDK_THREADS_ENTER ();
6758
6759   tree_view = GTK_TREE_VIEW (data);
6760
6761   gdk_window_get_pointer (tree_view->priv->bin_window,
6762                           &x, &y, &state);
6763
6764   gtk_tree_view_get_visible_rect (tree_view, &visible_rect);
6765
6766   /* See if we are near the edge. */
6767   if ((x - visible_rect.x) < SCROLL_EDGE_SIZE ||
6768       (visible_rect.x + visible_rect.width - x) < SCROLL_EDGE_SIZE ||
6769       (y - visible_rect.y) < SCROLL_EDGE_SIZE ||
6770       (visible_rect.y + visible_rect.height - y) < SCROLL_EDGE_SIZE)
6771     {
6772       gtk_tree_view_get_path_at_pos (tree_view,
6773                                      tree_view->priv->bin_window,
6774                                      x, y,
6775                                      &path,
6776                                      &column,
6777                                      NULL,
6778                                      NULL);
6779
6780       if (path != NULL)
6781         {
6782           gtk_tree_view_scroll_to_cell (tree_view,
6783                                         path,
6784                                         column,
6785                                         TRUE,
6786                                         0.5, 0.5);
6787
6788           gtk_tree_path_free (path);
6789         }
6790     }
6791
6792   GDK_THREADS_LEAVE ();
6793
6794   return TRUE;
6795 }
6796 #endif /* 0 */
6797
6798 static void
6799 add_scroll_timeout (GtkTreeView *tree_view)
6800 {
6801   if (tree_view->priv->scroll_timeout == 0)
6802     {
6803       tree_view->priv->scroll_timeout =
6804         gdk_threads_add_timeout (150, scroll_row_timeout, tree_view);
6805     }
6806 }
6807
6808 static void
6809 remove_scroll_timeout (GtkTreeView *tree_view)
6810 {
6811   if (tree_view->priv->scroll_timeout != 0)
6812     {
6813       g_source_remove (tree_view->priv->scroll_timeout);
6814       tree_view->priv->scroll_timeout = 0;
6815     }
6816 }
6817
6818 static gboolean
6819 check_model_dnd (GtkTreeModel *model,
6820                  GType         required_iface,
6821                  const gchar  *signal)
6822 {
6823   if (model == NULL || !G_TYPE_CHECK_INSTANCE_TYPE ((model), required_iface))
6824     {
6825       g_warning ("You must override the default '%s' handler "
6826                  "on GtkTreeView when using models that don't support "
6827                  "the %s interface and enabling drag-and-drop. The simplest way to do this "
6828                  "is to connect to '%s' and call "
6829                  "g_signal_stop_emission_by_name() in your signal handler to prevent "
6830                  "the default handler from running. Look at the source code "
6831                  "for the default handler in gtktreeview.c to get an idea what "
6832                  "your handler should do. (gtktreeview.c is in the GTK source "
6833                  "code.) If you're using GTK from a language other than C, "
6834                  "there may be a more natural way to override default handlers, e.g. via derivation.",
6835                  signal, g_type_name (required_iface), signal);
6836       return FALSE;
6837     }
6838   else
6839     return TRUE;
6840 }
6841
6842 static void
6843 remove_open_timeout (GtkTreeView *tree_view)
6844 {
6845   if (tree_view->priv->open_dest_timeout != 0)
6846     {
6847       g_source_remove (tree_view->priv->open_dest_timeout);
6848       tree_view->priv->open_dest_timeout = 0;
6849     }
6850 }
6851
6852
6853 static gint
6854 open_row_timeout (gpointer data)
6855 {
6856   GtkTreeView *tree_view = data;
6857   GtkTreePath *dest_path = NULL;
6858   GtkTreeViewDropPosition pos;
6859   gboolean result = FALSE;
6860
6861   gtk_tree_view_get_drag_dest_row (tree_view,
6862                                    &dest_path,
6863                                    &pos);
6864
6865   if (dest_path &&
6866       (pos == GTK_TREE_VIEW_DROP_INTO_OR_AFTER ||
6867        pos == GTK_TREE_VIEW_DROP_INTO_OR_BEFORE))
6868     {
6869       gtk_tree_view_expand_row (tree_view, dest_path, FALSE);
6870       tree_view->priv->open_dest_timeout = 0;
6871
6872       gtk_tree_path_free (dest_path);
6873     }
6874   else
6875     {
6876       if (dest_path)
6877         gtk_tree_path_free (dest_path);
6878
6879       result = TRUE;
6880     }
6881
6882   return result;
6883 }
6884
6885 static gboolean
6886 scroll_row_timeout (gpointer data)
6887 {
6888   GtkTreeView *tree_view = data;
6889
6890   gtk_tree_view_vertical_autoscroll (tree_view);
6891
6892   if (tree_view->priv->rubber_band_status == RUBBER_BAND_ACTIVE)
6893     gtk_tree_view_update_rubber_band (tree_view);
6894
6895   return TRUE;
6896 }
6897
6898 /* Returns TRUE if event should not be propagated to parent widgets */
6899 static gboolean
6900 set_destination_row (GtkTreeView    *tree_view,
6901                      GdkDragContext *context,
6902                      /* coordinates relative to the widget */
6903                      gint            x,
6904                      gint            y,
6905                      GdkDragAction  *suggested_action,
6906                      GdkAtom        *target)
6907 {
6908   GtkTreePath *path = NULL;
6909   GtkTreeViewDropPosition pos;
6910   GtkTreeViewDropPosition old_pos;
6911   TreeViewDragInfo *di;
6912   GtkWidget *widget;
6913   GtkTreePath *old_dest_path = NULL;
6914   gboolean can_drop = FALSE;
6915
6916   *suggested_action = 0;
6917   *target = GDK_NONE;
6918
6919   widget = GTK_WIDGET (tree_view);
6920
6921   di = get_info (tree_view);
6922
6923   if (di == NULL || y - TREE_VIEW_HEADER_HEIGHT (tree_view) < 0)
6924     {
6925       /* someone unset us as a drag dest, note that if
6926        * we return FALSE drag_leave isn't called
6927        */
6928
6929       gtk_tree_view_set_drag_dest_row (tree_view,
6930                                        NULL,
6931                                        GTK_TREE_VIEW_DROP_BEFORE);
6932
6933       remove_scroll_timeout (GTK_TREE_VIEW (widget));
6934       remove_open_timeout (GTK_TREE_VIEW (widget));
6935
6936       return FALSE; /* no longer a drop site */
6937     }
6938
6939   *target = gtk_drag_dest_find_target (widget, context,
6940                                        gtk_drag_dest_get_target_list (widget));
6941   if (*target == GDK_NONE)
6942     {
6943       return FALSE;
6944     }
6945
6946   if (!gtk_tree_view_get_dest_row_at_pos (tree_view,
6947                                           x, y,
6948                                           &path,
6949                                           &pos))
6950     {
6951       gint n_children;
6952       GtkTreeModel *model;
6953
6954       remove_open_timeout (tree_view);
6955
6956       /* the row got dropped on empty space, let's setup a special case
6957        */
6958
6959       if (path)
6960         gtk_tree_path_free (path);
6961
6962       model = gtk_tree_view_get_model (tree_view);
6963
6964       n_children = gtk_tree_model_iter_n_children (model, NULL);
6965       if (n_children)
6966         {
6967           pos = GTK_TREE_VIEW_DROP_AFTER;
6968           path = gtk_tree_path_new_from_indices (n_children - 1, -1);
6969         }
6970       else
6971         {
6972           pos = GTK_TREE_VIEW_DROP_BEFORE;
6973           path = gtk_tree_path_new_from_indices (0, -1);
6974         }
6975
6976       can_drop = TRUE;
6977
6978       goto out;
6979     }
6980
6981   g_assert (path);
6982
6983   /* If we left the current row's "open" zone, unset the timeout for
6984    * opening the row
6985    */
6986   gtk_tree_view_get_drag_dest_row (tree_view,
6987                                    &old_dest_path,
6988                                    &old_pos);
6989
6990   if (old_dest_path &&
6991       (gtk_tree_path_compare (path, old_dest_path) != 0 ||
6992        !(pos == GTK_TREE_VIEW_DROP_INTO_OR_AFTER ||
6993          pos == GTK_TREE_VIEW_DROP_INTO_OR_BEFORE)))
6994     remove_open_timeout (tree_view);
6995
6996   if (old_dest_path)
6997     gtk_tree_path_free (old_dest_path);
6998
6999   if (TRUE /* FIXME if the location droppable predicate */)
7000     {
7001       can_drop = TRUE;
7002     }
7003
7004 out:
7005   if (can_drop)
7006     {
7007       GtkWidget *source_widget;
7008
7009       *suggested_action = context->suggested_action;
7010       source_widget = gtk_drag_get_source_widget (context);
7011
7012       if (source_widget == widget)
7013         {
7014           /* Default to MOVE, unless the user has
7015            * pressed ctrl or shift to affect available actions
7016            */
7017           if ((context->actions & GDK_ACTION_MOVE) != 0)
7018             *suggested_action = GDK_ACTION_MOVE;
7019         }
7020
7021       gtk_tree_view_set_drag_dest_row (GTK_TREE_VIEW (widget),
7022                                        path, pos);
7023     }
7024   else
7025     {
7026       /* can't drop here */
7027       remove_open_timeout (tree_view);
7028
7029       gtk_tree_view_set_drag_dest_row (GTK_TREE_VIEW (widget),
7030                                        NULL,
7031                                        GTK_TREE_VIEW_DROP_BEFORE);
7032     }
7033
7034   if (path)
7035     gtk_tree_path_free (path);
7036
7037   return TRUE;
7038 }
7039
7040 static GtkTreePath*
7041 get_logical_dest_row (GtkTreeView *tree_view,
7042                       gboolean    *path_down_mode,
7043                       gboolean    *drop_append_mode)
7044 {
7045   /* adjust path to point to the row the drop goes in front of */
7046   GtkTreePath *path = NULL;
7047   GtkTreeViewDropPosition pos;
7048
7049   g_return_val_if_fail (path_down_mode != NULL, NULL);
7050   g_return_val_if_fail (drop_append_mode != NULL, NULL);
7051
7052   *path_down_mode = FALSE;
7053   *drop_append_mode = 0;
7054
7055   gtk_tree_view_get_drag_dest_row (tree_view, &path, &pos);
7056
7057   if (path == NULL)
7058     return NULL;
7059
7060   if (pos == GTK_TREE_VIEW_DROP_BEFORE)
7061     ; /* do nothing */
7062   else if (pos == GTK_TREE_VIEW_DROP_INTO_OR_BEFORE ||
7063            pos == GTK_TREE_VIEW_DROP_INTO_OR_AFTER)
7064     *path_down_mode = TRUE;
7065   else
7066     {
7067       GtkTreeIter iter;
7068       GtkTreeModel *model = gtk_tree_view_get_model (tree_view);
7069
7070       g_assert (pos == GTK_TREE_VIEW_DROP_AFTER);
7071
7072       if (!gtk_tree_model_get_iter (model, &iter, path) ||
7073           !gtk_tree_model_iter_next (model, &iter))
7074         *drop_append_mode = 1;
7075       else
7076         {
7077           *drop_append_mode = 0;
7078           gtk_tree_path_next (path);
7079         }
7080     }
7081
7082   return path;
7083 }
7084
7085 static gboolean
7086 gtk_tree_view_maybe_begin_dragging_row (GtkTreeView      *tree_view,
7087                                         GdkEventMotion   *event)
7088 {
7089   GtkWidget *widget = GTK_WIDGET (tree_view);
7090   GdkDragContext *context;
7091   TreeViewDragInfo *di;
7092   GtkTreePath *path = NULL;
7093   gint button;
7094   gint cell_x, cell_y;
7095   GtkTreeModel *model;
7096   gboolean retval = FALSE;
7097
7098   di = get_info (tree_view);
7099
7100   if (di == NULL || !di->source_set)
7101     goto out;
7102
7103   if (tree_view->priv->pressed_button < 0)
7104     goto out;
7105
7106   if (!gtk_drag_check_threshold (widget,
7107                                  tree_view->priv->press_start_x,
7108                                  tree_view->priv->press_start_y,
7109                                  event->x, event->y))
7110     goto out;
7111
7112   model = gtk_tree_view_get_model (tree_view);
7113
7114   if (model == NULL)
7115     goto out;
7116
7117   button = tree_view->priv->pressed_button;
7118   tree_view->priv->pressed_button = -1;
7119
7120   gtk_tree_view_get_path_at_pos (tree_view,
7121                                  tree_view->priv->press_start_x,
7122                                  tree_view->priv->press_start_y,
7123                                  &path,
7124                                  NULL,
7125                                  &cell_x,
7126                                  &cell_y);
7127
7128   if (path == NULL)
7129     goto out;
7130
7131   if (!GTK_IS_TREE_DRAG_SOURCE (model) ||
7132       !gtk_tree_drag_source_row_draggable (GTK_TREE_DRAG_SOURCE (model),
7133                                            path))
7134     goto out;
7135
7136   if (!(GDK_BUTTON1_MASK << (button - 1) & di->start_button_mask))
7137     goto out;
7138
7139   /* Now we can begin the drag */
7140
7141   retval = TRUE;
7142
7143   context = gtk_drag_begin (widget,
7144                             gtk_drag_source_get_target_list (widget),
7145                             di->source_actions,
7146                             button,
7147                             (GdkEvent*)event);
7148
7149   set_source_row (context, model, path);
7150
7151  out:
7152   if (path)
7153     gtk_tree_path_free (path);
7154
7155   return retval;
7156 }
7157
7158
7159 static void
7160 gtk_tree_view_drag_begin (GtkWidget      *widget,
7161                           GdkDragContext *context)
7162 {
7163   GtkTreeView *tree_view;
7164   GtkTreePath *path = NULL;
7165   gint cell_x, cell_y;
7166   GdkPixmap *row_pix;
7167   TreeViewDragInfo *di;
7168
7169   tree_view = GTK_TREE_VIEW (widget);
7170
7171   /* if the user uses a custom DND source impl, we don't set the icon here */
7172   di = get_info (tree_view);
7173
7174   if (di == NULL || !di->source_set)
7175     return;
7176
7177   gtk_tree_view_get_path_at_pos (tree_view,
7178                                  tree_view->priv->press_start_x,
7179                                  tree_view->priv->press_start_y,
7180                                  &path,
7181                                  NULL,
7182                                  &cell_x,
7183                                  &cell_y);
7184
7185   g_return_if_fail (path != NULL);
7186
7187   row_pix = gtk_tree_view_create_row_drag_icon (tree_view,
7188                                                 path);
7189
7190   gtk_drag_set_icon_pixmap (context,
7191                             gdk_drawable_get_colormap (row_pix),
7192                             row_pix,
7193                             NULL,
7194                             /* the + 1 is for the black border in the icon */
7195                             tree_view->priv->press_start_x + 1,
7196                             cell_y + 1);
7197
7198   g_object_unref (row_pix);
7199   gtk_tree_path_free (path);
7200 }
7201
7202 static void
7203 gtk_tree_view_drag_end (GtkWidget      *widget,
7204                         GdkDragContext *context)
7205 {
7206   /* do nothing */
7207 }
7208
7209 /* Default signal implementations for the drag signals */
7210 static void
7211 gtk_tree_view_drag_data_get (GtkWidget        *widget,
7212                              GdkDragContext   *context,
7213                              GtkSelectionData *selection_data,
7214                              guint             info,
7215                              guint             time)
7216 {
7217   GtkTreeView *tree_view;
7218   GtkTreeModel *model;
7219   TreeViewDragInfo *di;
7220   GtkTreePath *source_row;
7221
7222   tree_view = GTK_TREE_VIEW (widget);
7223
7224   model = gtk_tree_view_get_model (tree_view);
7225
7226   if (model == NULL)
7227     return;
7228
7229   di = get_info (GTK_TREE_VIEW (widget));
7230
7231   if (di == NULL)
7232     return;
7233
7234   source_row = get_source_row (context);
7235
7236   if (source_row == NULL)
7237     return;
7238
7239   /* We can implement the GTK_TREE_MODEL_ROW target generically for
7240    * any model; for DragSource models there are some other targets
7241    * we also support.
7242    */
7243
7244   if (GTK_IS_TREE_DRAG_SOURCE (model) &&
7245       gtk_tree_drag_source_drag_data_get (GTK_TREE_DRAG_SOURCE (model),
7246                                           source_row,
7247                                           selection_data))
7248     goto done;
7249
7250   /* If drag_data_get does nothing, try providing row data. */
7251   if (selection_data->target == gdk_atom_intern_static_string ("GTK_TREE_MODEL_ROW"))
7252     {
7253       gtk_tree_set_row_drag_data (selection_data,
7254                                   model,
7255                                   source_row);
7256     }
7257
7258  done:
7259   gtk_tree_path_free (source_row);
7260 }
7261
7262
7263 static void
7264 gtk_tree_view_drag_data_delete (GtkWidget      *widget,
7265                                 GdkDragContext *context)
7266 {
7267   TreeViewDragInfo *di;
7268   GtkTreeModel *model;
7269   GtkTreeView *tree_view;
7270   GtkTreePath *source_row;
7271
7272   tree_view = GTK_TREE_VIEW (widget);
7273   model = gtk_tree_view_get_model (tree_view);
7274
7275   if (!check_model_dnd (model, GTK_TYPE_TREE_DRAG_SOURCE, "drag_data_delete"))
7276     return;
7277
7278   di = get_info (tree_view);
7279
7280   if (di == NULL)
7281     return;
7282
7283   source_row = get_source_row (context);
7284
7285   if (source_row == NULL)
7286     return;
7287
7288   gtk_tree_drag_source_drag_data_delete (GTK_TREE_DRAG_SOURCE (model),
7289                                          source_row);
7290
7291   gtk_tree_path_free (source_row);
7292
7293   set_source_row (context, NULL, NULL);
7294 }
7295
7296 static void
7297 gtk_tree_view_drag_leave (GtkWidget      *widget,
7298                           GdkDragContext *context,
7299                           guint             time)
7300 {
7301   /* unset any highlight row */
7302   gtk_tree_view_set_drag_dest_row (GTK_TREE_VIEW (widget),
7303                                    NULL,
7304                                    GTK_TREE_VIEW_DROP_BEFORE);
7305
7306   remove_scroll_timeout (GTK_TREE_VIEW (widget));
7307   remove_open_timeout (GTK_TREE_VIEW (widget));
7308 }
7309
7310
7311 static gboolean
7312 gtk_tree_view_drag_motion (GtkWidget        *widget,
7313                            GdkDragContext   *context,
7314                            /* coordinates relative to the widget */
7315                            gint              x,
7316                            gint              y,
7317                            guint             time)
7318 {
7319   gboolean empty;
7320   GtkTreePath *path = NULL;
7321   GtkTreeViewDropPosition pos;
7322   GtkTreeView *tree_view;
7323   GdkDragAction suggested_action = 0;
7324   GdkAtom target;
7325
7326   tree_view = GTK_TREE_VIEW (widget);
7327
7328   if (!set_destination_row (tree_view, context, x, y, &suggested_action, &target))
7329     return FALSE;
7330
7331   gtk_tree_view_get_drag_dest_row (tree_view, &path, &pos);
7332
7333   /* we only know this *after* set_desination_row */
7334   empty = tree_view->priv->empty_view_drop;
7335
7336   if (path == NULL && !empty)
7337     {
7338       /* Can't drop here. */
7339       gdk_drag_status (context, 0, time);
7340     }
7341   else
7342     {
7343       if (tree_view->priv->open_dest_timeout == 0 &&
7344           (pos == GTK_TREE_VIEW_DROP_INTO_OR_AFTER ||
7345            pos == GTK_TREE_VIEW_DROP_INTO_OR_BEFORE))
7346         {
7347           tree_view->priv->open_dest_timeout =
7348             gdk_threads_add_timeout (AUTO_EXPAND_TIMEOUT, open_row_timeout, tree_view);
7349         }
7350       else
7351         {
7352           add_scroll_timeout (tree_view);
7353         }
7354
7355       if (target == gdk_atom_intern_static_string ("GTK_TREE_MODEL_ROW"))
7356         {
7357           /* Request data so we can use the source row when
7358            * determining whether to accept the drop
7359            */
7360           set_status_pending (context, suggested_action);
7361           gtk_drag_get_data (widget, context, target, time);
7362         }
7363       else
7364         {
7365           set_status_pending (context, 0);
7366           gdk_drag_status (context, suggested_action, time);
7367         }
7368     }
7369
7370   if (path)
7371     gtk_tree_path_free (path);
7372
7373   return TRUE;
7374 }
7375
7376
7377 static gboolean
7378 gtk_tree_view_drag_drop (GtkWidget        *widget,
7379                          GdkDragContext   *context,
7380                          /* coordinates relative to the widget */
7381                          gint              x,
7382                          gint              y,
7383                          guint             time)
7384 {
7385   GtkTreeView *tree_view;
7386   GtkTreePath *path;
7387   GdkDragAction suggested_action = 0;
7388   GdkAtom target = GDK_NONE;
7389   TreeViewDragInfo *di;
7390   GtkTreeModel *model;
7391   gboolean path_down_mode;
7392   gboolean drop_append_mode;
7393
7394   tree_view = GTK_TREE_VIEW (widget);
7395
7396   model = gtk_tree_view_get_model (tree_view);
7397
7398   remove_scroll_timeout (GTK_TREE_VIEW (widget));
7399   remove_open_timeout (GTK_TREE_VIEW (widget));
7400
7401   di = get_info (tree_view);
7402
7403   if (di == NULL)
7404     return FALSE;
7405
7406   if (!check_model_dnd (model, GTK_TYPE_TREE_DRAG_DEST, "drag_drop"))
7407     return FALSE;
7408
7409   if (!set_destination_row (tree_view, context, x, y, &suggested_action, &target))
7410     return FALSE;
7411
7412   path = get_logical_dest_row (tree_view, &path_down_mode, &drop_append_mode);
7413
7414   if (target != GDK_NONE && path != NULL)
7415     {
7416       /* in case a motion had requested drag data, change things so we
7417        * treat drag data receives as a drop.
7418        */
7419       set_status_pending (context, 0);
7420       set_dest_row (context, model, path,
7421                     path_down_mode, tree_view->priv->empty_view_drop,
7422                     drop_append_mode);
7423     }
7424
7425   if (path)
7426     gtk_tree_path_free (path);
7427
7428   /* Unset this thing */
7429   gtk_tree_view_set_drag_dest_row (GTK_TREE_VIEW (widget),
7430                                    NULL,
7431                                    GTK_TREE_VIEW_DROP_BEFORE);
7432
7433   if (target != GDK_NONE)
7434     {
7435       gtk_drag_get_data (widget, context, target, time);
7436       return TRUE;
7437     }
7438   else
7439     return FALSE;
7440 }
7441
7442 static void
7443 gtk_tree_view_drag_data_received (GtkWidget        *widget,
7444                                   GdkDragContext   *context,
7445                                   /* coordinates relative to the widget */
7446                                   gint              x,
7447                                   gint              y,
7448                                   GtkSelectionData *selection_data,
7449                                   guint             info,
7450                                   guint             time)
7451 {
7452   GtkTreePath *path;
7453   TreeViewDragInfo *di;
7454   gboolean accepted = FALSE;
7455   GtkTreeModel *model;
7456   GtkTreeView *tree_view;
7457   GtkTreePath *dest_row;
7458   GdkDragAction suggested_action;
7459   gboolean path_down_mode;
7460   gboolean drop_append_mode;
7461
7462   tree_view = GTK_TREE_VIEW (widget);
7463
7464   model = gtk_tree_view_get_model (tree_view);
7465
7466   if (!check_model_dnd (model, GTK_TYPE_TREE_DRAG_DEST, "drag_data_received"))
7467     return;
7468
7469   di = get_info (tree_view);
7470
7471   if (di == NULL)
7472     return;
7473
7474   suggested_action = get_status_pending (context);
7475
7476   if (suggested_action)
7477     {
7478       /* We are getting this data due to a request in drag_motion,
7479        * rather than due to a request in drag_drop, so we are just
7480        * supposed to call drag_status, not actually paste in the
7481        * data.
7482        */
7483       path = get_logical_dest_row (tree_view, &path_down_mode,
7484                                    &drop_append_mode);
7485
7486       if (path == NULL)
7487         suggested_action = 0;
7488       else if (path_down_mode)
7489         gtk_tree_path_down (path);
7490
7491       if (suggested_action)
7492         {
7493           if (!gtk_tree_drag_dest_row_drop_possible (GTK_TREE_DRAG_DEST (model),
7494                                                      path,
7495                                                      selection_data))
7496             {
7497               if (path_down_mode)
7498                 {
7499                   path_down_mode = FALSE;
7500                   gtk_tree_path_up (path);
7501
7502                   if (!gtk_tree_drag_dest_row_drop_possible (GTK_TREE_DRAG_DEST (model),
7503                                                              path,
7504                                                              selection_data))
7505                     suggested_action = 0;
7506                 }
7507               else
7508                 suggested_action = 0;
7509             }
7510         }
7511
7512       gdk_drag_status (context, suggested_action, time);
7513
7514       if (path)
7515         gtk_tree_path_free (path);
7516
7517       /* If you can't drop, remove user drop indicator until the next motion */
7518       if (suggested_action == 0)
7519         gtk_tree_view_set_drag_dest_row (GTK_TREE_VIEW (widget),
7520                                          NULL,
7521                                          GTK_TREE_VIEW_DROP_BEFORE);
7522
7523       return;
7524     }
7525
7526   dest_row = get_dest_row (context, &path_down_mode);
7527
7528   if (dest_row == NULL)
7529     return;
7530
7531   if (selection_data->length >= 0)
7532     {
7533       if (path_down_mode)
7534         {
7535           gtk_tree_path_down (dest_row);
7536           if (!gtk_tree_drag_dest_row_drop_possible (GTK_TREE_DRAG_DEST (model),
7537                                                      dest_row, selection_data))
7538             gtk_tree_path_up (dest_row);
7539         }
7540     }
7541
7542   if (selection_data->length >= 0)
7543     {
7544       if (gtk_tree_drag_dest_drag_data_received (GTK_TREE_DRAG_DEST (model),
7545                                                  dest_row,
7546                                                  selection_data))
7547         accepted = TRUE;
7548     }
7549
7550   gtk_drag_finish (context,
7551                    accepted,
7552                    (context->action == GDK_ACTION_MOVE),
7553                    time);
7554
7555   if (gtk_tree_path_get_depth (dest_row) == 1
7556       && gtk_tree_path_get_indices (dest_row)[0] == 0)
7557     {
7558       /* special special case drag to "0", scroll to first item */
7559       if (!tree_view->priv->scroll_to_path)
7560         gtk_tree_view_scroll_to_cell (tree_view, dest_row, NULL, FALSE, 0.0, 0.0);
7561     }
7562
7563   gtk_tree_path_free (dest_row);
7564
7565   /* drop dest_row */
7566   set_dest_row (context, NULL, NULL, FALSE, FALSE, FALSE);
7567 }
7568
7569
7570
7571 /* GtkContainer Methods
7572  */
7573
7574
7575 static void
7576 gtk_tree_view_remove (GtkContainer *container,
7577                       GtkWidget    *widget)
7578 {
7579   GtkTreeView *tree_view = GTK_TREE_VIEW (container);
7580   GtkTreeViewChild *child = NULL;
7581   GList *tmp_list;
7582
7583   tmp_list = tree_view->priv->children;
7584   while (tmp_list)
7585     {
7586       child = tmp_list->data;
7587       if (child->widget == widget)
7588         {
7589           gtk_widget_unparent (widget);
7590
7591           tree_view->priv->children = g_list_remove_link (tree_view->priv->children, tmp_list);
7592           g_list_free_1 (tmp_list);
7593           g_slice_free (GtkTreeViewChild, child);
7594           return;
7595         }
7596
7597       tmp_list = tmp_list->next;
7598     }
7599
7600   tmp_list = tree_view->priv->columns;
7601
7602   while (tmp_list)
7603     {
7604       GtkTreeViewColumn *column;
7605       column = tmp_list->data;
7606       if (column->button == widget)
7607         {
7608           gtk_widget_unparent (widget);
7609           return;
7610         }
7611       tmp_list = tmp_list->next;
7612     }
7613 }
7614
7615 static void
7616 gtk_tree_view_forall (GtkContainer *container,
7617                       gboolean      include_internals,
7618                       GtkCallback   callback,
7619                       gpointer      callback_data)
7620 {
7621   GtkTreeView *tree_view = GTK_TREE_VIEW (container);
7622   GtkTreeViewChild *child = NULL;
7623   GtkTreeViewColumn *column;
7624   GList *tmp_list;
7625
7626   tmp_list = tree_view->priv->children;
7627   while (tmp_list)
7628     {
7629       child = tmp_list->data;
7630       tmp_list = tmp_list->next;
7631
7632       (* callback) (child->widget, callback_data);
7633     }
7634   if (include_internals == FALSE)
7635     return;
7636
7637   for (tmp_list = tree_view->priv->columns; tmp_list; tmp_list = tmp_list->next)
7638     {
7639       column = tmp_list->data;
7640
7641       if (column->button)
7642         (* callback) (column->button, callback_data);
7643     }
7644 }
7645
7646 /* Returns TRUE if the treeview contains no "special" (editable or activatable)
7647  * cells. If so we draw one big row-spanning focus rectangle.
7648  */
7649 static gboolean
7650 gtk_tree_view_has_special_cell (GtkTreeView *tree_view)
7651 {
7652   GList *list;
7653
7654   for (list = tree_view->priv->columns; list; list = list->next)
7655     {
7656       if (!((GtkTreeViewColumn *)list->data)->visible)
7657         continue;
7658       if (_gtk_tree_view_column_count_special_cells (list->data))
7659         return TRUE;
7660     }
7661
7662   return FALSE;
7663 }
7664
7665 static void
7666 column_sizing_notify (GObject    *object,
7667                       GParamSpec *pspec,
7668                       gpointer    data)
7669 {
7670   GtkTreeViewColumn *c = GTK_TREE_VIEW_COLUMN (object);
7671
7672   if (gtk_tree_view_column_get_sizing (c) != GTK_TREE_VIEW_COLUMN_FIXED)
7673     /* disable fixed height mode */
7674     g_object_set (data, "fixed-height-mode", FALSE, NULL);
7675 }
7676
7677 /**
7678  * gtk_tree_view_set_fixed_height_mode:
7679  * @tree_view: a #GtkTreeView
7680  * @enable: %TRUE to enable fixed height mode
7681  *
7682  * Enables or disables the fixed height mode of @tree_view.
7683  * Fixed height mode speeds up #GtkTreeView by assuming that all
7684  * rows have the same height.
7685  * Only enable this option if all rows are the same height and all
7686  * columns are of type %GTK_TREE_VIEW_COLUMN_FIXED.
7687  *
7688  * Since: 2.6
7689  **/
7690 void
7691 gtk_tree_view_set_fixed_height_mode (GtkTreeView *tree_view,
7692                                      gboolean     enable)
7693 {
7694   GList *l;
7695
7696   enable = enable != FALSE;
7697
7698   if (enable == tree_view->priv->fixed_height_mode)
7699     return;
7700
7701   if (!enable)
7702     {
7703       tree_view->priv->fixed_height_mode = 0;
7704       tree_view->priv->fixed_height = -1;
7705
7706       /* force a revalidation */
7707       install_presize_handler (tree_view);
7708     }
7709   else
7710     {
7711       /* make sure all columns are of type FIXED */
7712       for (l = tree_view->priv->columns; l; l = l->next)
7713         {
7714           GtkTreeViewColumn *c = l->data;
7715
7716           g_return_if_fail (gtk_tree_view_column_get_sizing (c) == GTK_TREE_VIEW_COLUMN_FIXED);
7717         }
7718
7719       /* yes, we really have to do this is in a separate loop */
7720       for (l = tree_view->priv->columns; l; l = l->next)
7721         g_signal_connect (l->data, "notify::sizing",
7722                           G_CALLBACK (column_sizing_notify), tree_view);
7723
7724       tree_view->priv->fixed_height_mode = 1;
7725       tree_view->priv->fixed_height = -1;
7726
7727       if (tree_view->priv->tree)
7728         initialize_fixed_height_mode (tree_view);
7729     }
7730
7731   g_object_notify (G_OBJECT (tree_view), "fixed-height-mode");
7732 }
7733
7734 /**
7735  * gtk_tree_view_get_fixed_height_mode:
7736  * @tree_view: a #GtkTreeView
7737  *
7738  * Returns whether fixed height mode is turned on for @tree_view.
7739  *
7740  * Return value: %TRUE if @tree_view is in fixed height mode
7741  *
7742  * Since: 2.6
7743  **/
7744 gboolean
7745 gtk_tree_view_get_fixed_height_mode (GtkTreeView *tree_view)
7746 {
7747   return tree_view->priv->fixed_height_mode;
7748 }
7749
7750 /* Returns TRUE if the focus is within the headers, after the focus operation is
7751  * done
7752  */
7753 static gboolean
7754 gtk_tree_view_header_focus (GtkTreeView      *tree_view,
7755                             GtkDirectionType  dir,
7756                             gboolean          clamp_column_visible)
7757 {
7758   GtkWidget *focus_child;
7759
7760   GList *last_column, *first_column;
7761   GList *tmp_list;
7762   gboolean rtl;
7763
7764   if (! GTK_TREE_VIEW_FLAG_SET (tree_view, GTK_TREE_VIEW_HEADERS_VISIBLE))
7765     return FALSE;
7766
7767   focus_child = GTK_CONTAINER (tree_view)->focus_child;
7768
7769   first_column = tree_view->priv->columns;
7770   while (first_column)
7771     {
7772       if (gtk_widget_get_can_focus (GTK_TREE_VIEW_COLUMN (first_column->data)->button) &&
7773           GTK_TREE_VIEW_COLUMN (first_column->data)->visible &&
7774           (GTK_TREE_VIEW_COLUMN (first_column->data)->clickable ||
7775            GTK_TREE_VIEW_COLUMN (first_column->data)->reorderable))
7776         break;
7777       first_column = first_column->next;
7778     }
7779
7780   /* No headers are visible, or are focusable.  We can't focus in or out.
7781    */
7782   if (first_column == NULL)
7783     return FALSE;
7784
7785   last_column = g_list_last (tree_view->priv->columns);
7786   while (last_column)
7787     {
7788       if (gtk_widget_get_can_focus (GTK_TREE_VIEW_COLUMN (last_column->data)->button) &&
7789           GTK_TREE_VIEW_COLUMN (last_column->data)->visible &&
7790           (GTK_TREE_VIEW_COLUMN (last_column->data)->clickable ||
7791            GTK_TREE_VIEW_COLUMN (last_column->data)->reorderable))
7792         break;
7793       last_column = last_column->prev;
7794     }
7795
7796
7797   rtl = (gtk_widget_get_direction (GTK_WIDGET (tree_view)) == GTK_TEXT_DIR_RTL);
7798
7799   switch (dir)
7800     {
7801     case GTK_DIR_TAB_BACKWARD:
7802     case GTK_DIR_TAB_FORWARD:
7803     case GTK_DIR_UP:
7804     case GTK_DIR_DOWN:
7805       if (focus_child == NULL)
7806         {
7807           if (tree_view->priv->focus_column != NULL &&
7808               gtk_widget_get_can_focus (tree_view->priv->focus_column->button))
7809             focus_child = tree_view->priv->focus_column->button;
7810           else
7811             focus_child = GTK_TREE_VIEW_COLUMN (first_column->data)->button;
7812           gtk_widget_grab_focus (focus_child);
7813           break;
7814         }
7815       return FALSE;
7816
7817     case GTK_DIR_LEFT:
7818     case GTK_DIR_RIGHT:
7819       if (focus_child == NULL)
7820         {
7821           if (tree_view->priv->focus_column != NULL)
7822             focus_child = tree_view->priv->focus_column->button;
7823           else if (dir == GTK_DIR_LEFT)
7824             focus_child = GTK_TREE_VIEW_COLUMN (last_column->data)->button;
7825           else
7826             focus_child = GTK_TREE_VIEW_COLUMN (first_column->data)->button;
7827           gtk_widget_grab_focus (focus_child);
7828           break;
7829         }
7830
7831       if (gtk_widget_child_focus (focus_child, dir))
7832         {
7833           /* The focus moves inside the button. */
7834           /* This is probably a great example of bad UI */
7835           break;
7836         }
7837
7838       /* We need to move the focus among the row of buttons. */
7839       for (tmp_list = tree_view->priv->columns; tmp_list; tmp_list = tmp_list->next)
7840         if (GTK_TREE_VIEW_COLUMN (tmp_list->data)->button == focus_child)
7841           break;
7842
7843       if ((tmp_list == first_column && dir == (rtl ? GTK_DIR_RIGHT : GTK_DIR_LEFT))
7844           || (tmp_list == last_column && dir == (rtl ? GTK_DIR_LEFT : GTK_DIR_RIGHT)))
7845         {
7846           gtk_widget_error_bell (GTK_WIDGET (tree_view));
7847           break;
7848         }
7849
7850       while (tmp_list)
7851         {
7852           GtkTreeViewColumn *column;
7853
7854           if (dir == (rtl ? GTK_DIR_LEFT : GTK_DIR_RIGHT))
7855             tmp_list = tmp_list->next;
7856           else
7857             tmp_list = tmp_list->prev;
7858
7859           if (tmp_list == NULL)
7860             {
7861               g_warning ("Internal button not found");
7862               break;
7863             }
7864           column = tmp_list->data;
7865           if (column->button &&
7866               column->visible &&
7867               gtk_widget_get_can_focus (column->button))
7868             {
7869               focus_child = column->button;
7870               gtk_widget_grab_focus (column->button);
7871               break;
7872             }
7873         }
7874       break;
7875     default:
7876       g_assert_not_reached ();
7877       break;
7878     }
7879
7880   /* if focus child is non-null, we assume it's been set to the current focus child
7881    */
7882   if (focus_child)
7883     {
7884       for (tmp_list = tree_view->priv->columns; tmp_list; tmp_list = tmp_list->next)
7885         if (GTK_TREE_VIEW_COLUMN (tmp_list->data)->button == focus_child)
7886           {
7887             tree_view->priv->focus_column = GTK_TREE_VIEW_COLUMN (tmp_list->data);
7888             break;
7889           }
7890
7891       if (clamp_column_visible)
7892         {
7893           gtk_tree_view_clamp_column_visible (tree_view,
7894                                               tree_view->priv->focus_column,
7895                                               FALSE);
7896         }
7897     }
7898
7899   return (focus_child != NULL);
7900 }
7901
7902 /* This function returns in 'path' the first focusable path, if the given path
7903  * is already focusable, it's the returned one.
7904  */
7905 static gboolean
7906 search_first_focusable_path (GtkTreeView  *tree_view,
7907                              GtkTreePath **path,
7908                              gboolean      search_forward,
7909                              GtkRBTree   **new_tree,
7910                              GtkRBNode   **new_node)
7911 {
7912   GtkRBTree *tree = NULL;
7913   GtkRBNode *node = NULL;
7914
7915   if (!path || !*path)
7916     return FALSE;
7917
7918   _gtk_tree_view_find_node (tree_view, *path, &tree, &node);
7919
7920   if (!tree || !node)
7921     return FALSE;
7922
7923   while (node && row_is_separator (tree_view, NULL, *path))
7924     {
7925       if (search_forward)
7926         _gtk_rbtree_next_full (tree, node, &tree, &node);
7927       else
7928         _gtk_rbtree_prev_full (tree, node, &tree, &node);
7929
7930       if (*path)
7931         gtk_tree_path_free (*path);
7932
7933       if (node)
7934         *path = _gtk_tree_view_find_path (tree_view, tree, node);
7935       else
7936         *path = NULL;
7937     }
7938
7939   if (new_tree)
7940     *new_tree = tree;
7941
7942   if (new_node)
7943     *new_node = node;
7944
7945   return (*path != NULL);
7946 }
7947
7948 static gint
7949 gtk_tree_view_focus (GtkWidget        *widget,
7950                      GtkDirectionType  direction)
7951 {
7952   GtkTreeView *tree_view = GTK_TREE_VIEW (widget);
7953   GtkContainer *container = GTK_CONTAINER (widget);
7954   GtkWidget *focus_child;
7955
7956   if (!gtk_widget_is_sensitive (widget) || !gtk_widget_get_can_focus (widget))
7957     return FALSE;
7958
7959   focus_child = container->focus_child;
7960
7961   gtk_tree_view_stop_editing (GTK_TREE_VIEW (widget), FALSE);
7962   /* Case 1.  Headers currently have focus. */
7963   if (focus_child)
7964     {
7965       switch (direction)
7966         {
7967         case GTK_DIR_LEFT:
7968         case GTK_DIR_RIGHT:
7969           gtk_tree_view_header_focus (tree_view, direction, TRUE);
7970           return TRUE;
7971         case GTK_DIR_TAB_BACKWARD:
7972         case GTK_DIR_UP:
7973           return FALSE;
7974         case GTK_DIR_TAB_FORWARD:
7975         case GTK_DIR_DOWN:
7976           gtk_widget_grab_focus (widget);
7977           return TRUE;
7978         default:
7979           g_assert_not_reached ();
7980           return FALSE;
7981         }
7982     }
7983
7984   /* Case 2. We don't have focus at all. */
7985   if (!gtk_widget_has_focus (widget))
7986     {
7987       if (!gtk_tree_view_header_focus (tree_view, direction, FALSE))
7988         gtk_widget_grab_focus (widget);
7989       return TRUE;
7990     }
7991
7992   /* Case 3. We have focus already. */
7993   if (direction == GTK_DIR_TAB_BACKWARD)
7994     return (gtk_tree_view_header_focus (tree_view, direction, FALSE));
7995   else if (direction == GTK_DIR_TAB_FORWARD)
7996     return FALSE;
7997
7998   /* Other directions caught by the keybindings */
7999   gtk_widget_grab_focus (widget);
8000   return TRUE;
8001 }
8002
8003 static void
8004 gtk_tree_view_grab_focus (GtkWidget *widget)
8005 {
8006   GTK_WIDGET_CLASS (gtk_tree_view_parent_class)->grab_focus (widget);
8007
8008   gtk_tree_view_focus_to_cursor (GTK_TREE_VIEW (widget));
8009 }
8010
8011 static void
8012 gtk_tree_view_style_set (GtkWidget *widget,
8013                          GtkStyle *previous_style)
8014 {
8015   GtkTreeView *tree_view = GTK_TREE_VIEW (widget);
8016   GList *list;
8017   GtkTreeViewColumn *column;
8018
8019   if (gtk_widget_get_realized (widget))
8020     {
8021       gdk_window_set_back_pixmap (widget->window, NULL, FALSE);
8022       gdk_window_set_background (tree_view->priv->bin_window, &widget->style->base[widget->state]);
8023       gtk_style_set_background (widget->style, tree_view->priv->header_window, GTK_STATE_NORMAL);
8024
8025       gtk_tree_view_set_grid_lines (tree_view, tree_view->priv->grid_lines);
8026       gtk_tree_view_set_enable_tree_lines (tree_view, tree_view->priv->tree_lines_enabled);
8027     }
8028
8029   gtk_widget_style_get (widget,
8030                         "expander-size", &tree_view->priv->expander_size,
8031                         NULL);
8032   tree_view->priv->expander_size += EXPANDER_EXTRA_PADDING;
8033
8034   for (list = tree_view->priv->columns; list; list = list->next)
8035     {
8036       column = list->data;
8037       _gtk_tree_view_column_cell_set_dirty (column, TRUE);
8038     }
8039
8040   tree_view->priv->fixed_height = -1;
8041   _gtk_rbtree_mark_invalid (tree_view->priv->tree);
8042
8043   gtk_widget_queue_resize (widget);
8044 }
8045
8046
8047 static void
8048 gtk_tree_view_set_focus_child (GtkContainer *container,
8049                                GtkWidget    *child)
8050 {
8051   GtkTreeView *tree_view = GTK_TREE_VIEW (container);
8052   GList *list;
8053
8054   for (list = tree_view->priv->columns; list; list = list->next)
8055     {
8056       if (GTK_TREE_VIEW_COLUMN (list->data)->button == child)
8057         {
8058           tree_view->priv->focus_column = GTK_TREE_VIEW_COLUMN (list->data);
8059           break;
8060         }
8061     }
8062
8063   GTK_CONTAINER_CLASS (gtk_tree_view_parent_class)->set_focus_child (container, child);
8064 }
8065
8066 static void
8067 gtk_tree_view_set_adjustments (GtkTreeView   *tree_view,
8068                                GtkAdjustment *hadj,
8069                                GtkAdjustment *vadj)
8070 {
8071   gboolean need_adjust = FALSE;
8072
8073   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
8074
8075   if (hadj)
8076     g_return_if_fail (GTK_IS_ADJUSTMENT (hadj));
8077   else
8078     hadj = GTK_ADJUSTMENT (gtk_adjustment_new (0.0, 0.0, 0.0, 0.0, 0.0, 0.0));
8079   if (vadj)
8080     g_return_if_fail (GTK_IS_ADJUSTMENT (vadj));
8081   else
8082     vadj = GTK_ADJUSTMENT (gtk_adjustment_new (0.0, 0.0, 0.0, 0.0, 0.0, 0.0));
8083
8084   if (tree_view->priv->hadjustment && (tree_view->priv->hadjustment != hadj))
8085     {
8086       g_signal_handlers_disconnect_by_func (tree_view->priv->hadjustment,
8087                                             gtk_tree_view_adjustment_changed,
8088                                             tree_view);
8089       g_object_unref (tree_view->priv->hadjustment);
8090     }
8091
8092   if (tree_view->priv->vadjustment && (tree_view->priv->vadjustment != vadj))
8093     {
8094       g_signal_handlers_disconnect_by_func (tree_view->priv->vadjustment,
8095                                             gtk_tree_view_adjustment_changed,
8096                                             tree_view);
8097       g_object_unref (tree_view->priv->vadjustment);
8098     }
8099
8100   if (tree_view->priv->hadjustment != hadj)
8101     {
8102       tree_view->priv->hadjustment = hadj;
8103       g_object_ref_sink (tree_view->priv->hadjustment);
8104
8105       g_signal_connect (tree_view->priv->hadjustment, "value-changed",
8106                         G_CALLBACK (gtk_tree_view_adjustment_changed),
8107                         tree_view);
8108       need_adjust = TRUE;
8109     }
8110
8111   if (tree_view->priv->vadjustment != vadj)
8112     {
8113       tree_view->priv->vadjustment = vadj;
8114       g_object_ref_sink (tree_view->priv->vadjustment);
8115
8116       g_signal_connect (tree_view->priv->vadjustment, "value-changed",
8117                         G_CALLBACK (gtk_tree_view_adjustment_changed),
8118                         tree_view);
8119       need_adjust = TRUE;
8120     }
8121
8122   if (need_adjust)
8123     gtk_tree_view_adjustment_changed (NULL, tree_view);
8124 }
8125
8126
8127 static gboolean
8128 gtk_tree_view_real_move_cursor (GtkTreeView       *tree_view,
8129                                 GtkMovementStep    step,
8130                                 gint               count)
8131 {
8132   GdkModifierType state;
8133
8134   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), FALSE);
8135   g_return_val_if_fail (step == GTK_MOVEMENT_LOGICAL_POSITIONS ||
8136                         step == GTK_MOVEMENT_VISUAL_POSITIONS ||
8137                         step == GTK_MOVEMENT_DISPLAY_LINES ||
8138                         step == GTK_MOVEMENT_PAGES ||
8139                         step == GTK_MOVEMENT_BUFFER_ENDS, FALSE);
8140
8141   if (tree_view->priv->tree == NULL)
8142     return FALSE;
8143   if (!gtk_widget_has_focus (GTK_WIDGET (tree_view)))
8144     return FALSE;
8145
8146   gtk_tree_view_stop_editing (tree_view, FALSE);
8147   GTK_TREE_VIEW_SET_FLAG (tree_view, GTK_TREE_VIEW_DRAW_KEYFOCUS);
8148   gtk_widget_grab_focus (GTK_WIDGET (tree_view));
8149
8150   if (gtk_get_current_event_state (&state))
8151     {
8152       if ((state & GDK_CONTROL_MASK) == GDK_CONTROL_MASK)
8153         tree_view->priv->ctrl_pressed = TRUE;
8154       if ((state & GDK_SHIFT_MASK) == GDK_SHIFT_MASK)
8155         tree_view->priv->shift_pressed = TRUE;
8156     }
8157   /* else we assume not pressed */
8158
8159   switch (step)
8160     {
8161       /* currently we make no distinction.  When we go bi-di, we need to */
8162     case GTK_MOVEMENT_LOGICAL_POSITIONS:
8163     case GTK_MOVEMENT_VISUAL_POSITIONS:
8164       gtk_tree_view_move_cursor_left_right (tree_view, count);
8165       break;
8166     case GTK_MOVEMENT_DISPLAY_LINES:
8167       gtk_tree_view_move_cursor_up_down (tree_view, count);
8168       break;
8169     case GTK_MOVEMENT_PAGES:
8170       gtk_tree_view_move_cursor_page_up_down (tree_view, count);
8171       break;
8172     case GTK_MOVEMENT_BUFFER_ENDS:
8173       gtk_tree_view_move_cursor_start_end (tree_view, count);
8174       break;
8175     default:
8176       g_assert_not_reached ();
8177     }
8178
8179   tree_view->priv->ctrl_pressed = FALSE;
8180   tree_view->priv->shift_pressed = FALSE;
8181
8182   return TRUE;
8183 }
8184
8185 static void
8186 gtk_tree_view_put (GtkTreeView *tree_view,
8187                    GtkWidget   *child_widget,
8188                    /* in bin_window coordinates */
8189                    gint         x,
8190                    gint         y,
8191                    gint         width,
8192                    gint         height)
8193 {
8194   GtkTreeViewChild *child;
8195
8196   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
8197   g_return_if_fail (GTK_IS_WIDGET (child_widget));
8198
8199   child = g_slice_new (GtkTreeViewChild);
8200
8201   child->widget = child_widget;
8202   child->x = x;
8203   child->y = y;
8204   child->width = width;
8205   child->height = height;
8206
8207   tree_view->priv->children = g_list_append (tree_view->priv->children, child);
8208
8209   if (gtk_widget_get_realized (GTK_WIDGET (tree_view)))
8210     gtk_widget_set_parent_window (child->widget, tree_view->priv->bin_window);
8211
8212   gtk_widget_set_parent (child_widget, GTK_WIDGET (tree_view));
8213 }
8214
8215 void
8216 _gtk_tree_view_child_move_resize (GtkTreeView *tree_view,
8217                                   GtkWidget   *widget,
8218                                   /* in tree coordinates */
8219                                   gint         x,
8220                                   gint         y,
8221                                   gint         width,
8222                                   gint         height)
8223 {
8224   GtkTreeViewChild *child = NULL;
8225   GList *list;
8226   GdkRectangle allocation;
8227
8228   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
8229   g_return_if_fail (GTK_IS_WIDGET (widget));
8230
8231   for (list = tree_view->priv->children; list; list = list->next)
8232     {
8233       if (((GtkTreeViewChild *)list->data)->widget == widget)
8234         {
8235           child = list->data;
8236           break;
8237         }
8238     }
8239   if (child == NULL)
8240     return;
8241
8242   allocation.x = child->x = x;
8243   allocation.y = child->y = y;
8244   allocation.width = child->width = width;
8245   allocation.height = child->height = height;
8246
8247   if (gtk_widget_get_realized (widget))
8248     gtk_widget_size_allocate (widget, &allocation);
8249 }
8250
8251
8252 /* TreeModel Callbacks
8253  */
8254
8255 static void
8256 gtk_tree_view_row_changed (GtkTreeModel *model,
8257                            GtkTreePath  *path,
8258                            GtkTreeIter  *iter,
8259                            gpointer      data)
8260 {
8261   GtkTreeView *tree_view = (GtkTreeView *)data;
8262   GtkRBTree *tree;
8263   GtkRBNode *node;
8264   gboolean free_path = FALSE;
8265   GList *list;
8266   GtkTreePath *cursor_path;
8267
8268   g_return_if_fail (path != NULL || iter != NULL);
8269
8270   if (tree_view->priv->cursor != NULL)
8271     cursor_path = gtk_tree_row_reference_get_path (tree_view->priv->cursor);
8272   else
8273     cursor_path = NULL;
8274
8275   if (tree_view->priv->edited_column &&
8276       (cursor_path == NULL || gtk_tree_path_compare (cursor_path, path) == 0))
8277     gtk_tree_view_stop_editing (tree_view, TRUE);
8278
8279   if (cursor_path != NULL)
8280     gtk_tree_path_free (cursor_path);
8281
8282   if (path == NULL)
8283     {
8284       path = gtk_tree_model_get_path (model, iter);
8285       free_path = TRUE;
8286     }
8287   else if (iter == NULL)
8288     gtk_tree_model_get_iter (model, iter, path);
8289
8290   if (_gtk_tree_view_find_node (tree_view,
8291                                 path,
8292                                 &tree,
8293                                 &node))
8294     /* We aren't actually showing the node */
8295     goto done;
8296
8297   if (tree == NULL)
8298     goto done;
8299
8300   if (tree_view->priv->fixed_height_mode
8301       && tree_view->priv->fixed_height >= 0)
8302     {
8303       _gtk_rbtree_node_set_height (tree, node, tree_view->priv->fixed_height);
8304       if (gtk_widget_get_realized (GTK_WIDGET (tree_view)))
8305         gtk_tree_view_node_queue_redraw (tree_view, tree, node);
8306     }
8307   else
8308     {
8309       _gtk_rbtree_node_mark_invalid (tree, node);
8310       for (list = tree_view->priv->columns; list; list = list->next)
8311         {
8312           GtkTreeViewColumn *column;
8313
8314           column = list->data;
8315           if (! column->visible)
8316             continue;
8317
8318           if (column->column_type == GTK_TREE_VIEW_COLUMN_AUTOSIZE)
8319             {
8320               _gtk_tree_view_column_cell_set_dirty (column, TRUE);
8321             }
8322         }
8323     }
8324
8325  done:
8326   if (!tree_view->priv->fixed_height_mode &&
8327       gtk_widget_get_realized (GTK_WIDGET (tree_view)))
8328     install_presize_handler (tree_view);
8329   if (free_path)
8330     gtk_tree_path_free (path);
8331 }
8332
8333 static void
8334 gtk_tree_view_row_inserted (GtkTreeModel *model,
8335                             GtkTreePath  *path,
8336                             GtkTreeIter  *iter,
8337                             gpointer      data)
8338 {
8339   GtkTreeView *tree_view = (GtkTreeView *) data;
8340   gint *indices;
8341   GtkRBTree *tmptree, *tree;
8342   GtkRBNode *tmpnode = NULL;
8343   gint depth;
8344   gint i = 0;
8345   gint height;
8346   gboolean free_path = FALSE;
8347   gboolean node_visible = TRUE;
8348
8349   g_return_if_fail (path != NULL || iter != NULL);
8350
8351   if (tree_view->priv->fixed_height_mode
8352       && tree_view->priv->fixed_height >= 0)
8353     height = tree_view->priv->fixed_height;
8354   else
8355     height = 0;
8356
8357   if (path == NULL)
8358     {
8359       path = gtk_tree_model_get_path (model, iter);
8360       free_path = TRUE;
8361     }
8362   else if (iter == NULL)
8363     gtk_tree_model_get_iter (model, iter, path);
8364
8365   if (tree_view->priv->tree == NULL)
8366     tree_view->priv->tree = _gtk_rbtree_new ();
8367
8368   tmptree = tree = tree_view->priv->tree;
8369
8370   /* Update all row-references */
8371   gtk_tree_row_reference_inserted (G_OBJECT (data), path);
8372   depth = gtk_tree_path_get_depth (path);
8373   indices = gtk_tree_path_get_indices (path);
8374
8375   /* First, find the parent tree */
8376   while (i < depth - 1)
8377     {
8378       if (tmptree == NULL)
8379         {
8380           /* We aren't showing the node */
8381           node_visible = FALSE;
8382           goto done;
8383         }
8384
8385       tmpnode = _gtk_rbtree_find_count (tmptree, indices[i] + 1);
8386       if (tmpnode == NULL)
8387         {
8388           g_warning ("A node was inserted with a parent that's not in the tree.\n" \
8389                      "This possibly means that a GtkTreeModel inserted a child node\n" \
8390                      "before the parent was inserted.");
8391           goto done;
8392         }
8393       else if (!GTK_RBNODE_FLAG_SET (tmpnode, GTK_RBNODE_IS_PARENT))
8394         {
8395           /* FIXME enforce correct behavior on model, probably */
8396           /* In theory, the model should have emitted has_child_toggled here.  We
8397            * try to catch it anyway, just to be safe, in case the model hasn't.
8398            */
8399           GtkTreePath *tmppath = _gtk_tree_view_find_path (tree_view,
8400                                                            tree,
8401                                                            tmpnode);
8402           gtk_tree_view_row_has_child_toggled (model, tmppath, NULL, data);
8403           gtk_tree_path_free (tmppath);
8404           goto done;
8405         }
8406
8407       tmptree = tmpnode->children;
8408       tree = tmptree;
8409       i++;
8410     }
8411
8412   if (tree == NULL)
8413     {
8414       node_visible = FALSE;
8415       goto done;
8416     }
8417
8418   /* ref the node */
8419   gtk_tree_model_ref_node (tree_view->priv->model, iter);
8420   if (indices[depth - 1] == 0)
8421     {
8422       tmpnode = _gtk_rbtree_find_count (tree, 1);
8423       tmpnode = _gtk_rbtree_insert_before (tree, tmpnode, height, FALSE);
8424     }
8425   else
8426     {
8427       tmpnode = _gtk_rbtree_find_count (tree, indices[depth - 1]);
8428       tmpnode = _gtk_rbtree_insert_after (tree, tmpnode, height, FALSE);
8429     }
8430
8431  done:
8432   if (height > 0)
8433     {
8434       if (tree)
8435         _gtk_rbtree_node_mark_valid (tree, tmpnode);
8436
8437       if (node_visible && node_is_visible (tree_view, tree, tmpnode))
8438         gtk_widget_queue_resize (GTK_WIDGET (tree_view));
8439       else
8440         gtk_widget_queue_resize_no_redraw (GTK_WIDGET (tree_view));
8441     }
8442   else
8443     install_presize_handler (tree_view);
8444   if (free_path)
8445     gtk_tree_path_free (path);
8446 }
8447
8448 static void
8449 gtk_tree_view_row_has_child_toggled (GtkTreeModel *model,
8450                                      GtkTreePath  *path,
8451                                      GtkTreeIter  *iter,
8452                                      gpointer      data)
8453 {
8454   GtkTreeView *tree_view = (GtkTreeView *)data;
8455   GtkTreeIter real_iter;
8456   gboolean has_child;
8457   GtkRBTree *tree;
8458   GtkRBNode *node;
8459   gboolean free_path = FALSE;
8460
8461   g_return_if_fail (path != NULL || iter != NULL);
8462
8463   if (iter)
8464     real_iter = *iter;
8465
8466   if (path == NULL)
8467     {
8468       path = gtk_tree_model_get_path (model, iter);
8469       free_path = TRUE;
8470     }
8471   else if (iter == NULL)
8472     gtk_tree_model_get_iter (model, &real_iter, path);
8473
8474   if (_gtk_tree_view_find_node (tree_view,
8475                                 path,
8476                                 &tree,
8477                                 &node))
8478     /* We aren't actually showing the node */
8479     goto done;
8480
8481   if (tree == NULL)
8482     goto done;
8483
8484   has_child = gtk_tree_model_iter_has_child (model, &real_iter);
8485   /* Sanity check.
8486    */
8487   if (GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_PARENT) == has_child)
8488     goto done;
8489
8490   if (has_child)
8491     GTK_RBNODE_SET_FLAG (node, GTK_RBNODE_IS_PARENT);
8492   else
8493     GTK_RBNODE_UNSET_FLAG (node, GTK_RBNODE_IS_PARENT);
8494
8495   if (has_child && GTK_TREE_VIEW_FLAG_SET (tree_view, GTK_TREE_VIEW_IS_LIST))
8496     {
8497       GTK_TREE_VIEW_UNSET_FLAG (tree_view, GTK_TREE_VIEW_IS_LIST);
8498       if (GTK_TREE_VIEW_FLAG_SET (tree_view, GTK_TREE_VIEW_SHOW_EXPANDERS))
8499         {
8500           GList *list;
8501
8502           for (list = tree_view->priv->columns; list; list = list->next)
8503             if (GTK_TREE_VIEW_COLUMN (list->data)->visible)
8504               {
8505                 GTK_TREE_VIEW_COLUMN (list->data)->dirty = TRUE;
8506                 _gtk_tree_view_column_cell_set_dirty (GTK_TREE_VIEW_COLUMN (list->data), TRUE);
8507                 break;
8508               }
8509         }
8510       gtk_widget_queue_resize (GTK_WIDGET (tree_view));
8511     }
8512   else
8513     {
8514       _gtk_tree_view_queue_draw_node (tree_view, tree, node, NULL);
8515     }
8516
8517  done:
8518   if (free_path)
8519     gtk_tree_path_free (path);
8520 }
8521
8522 static void
8523 count_children_helper (GtkRBTree *tree,
8524                        GtkRBNode *node,
8525                        gpointer   data)
8526 {
8527   if (node->children)
8528     _gtk_rbtree_traverse (node->children, node->children->root, G_POST_ORDER, count_children_helper, data);
8529   (*((gint *)data))++;
8530 }
8531
8532 static void
8533 check_selection_helper (GtkRBTree *tree,
8534                         GtkRBNode *node,
8535                         gpointer   data)
8536 {
8537   gint *value = (gint *)data;
8538
8539   *value = GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_SELECTED);
8540
8541   if (node->children && !*value)
8542     _gtk_rbtree_traverse (node->children, node->children->root, G_POST_ORDER, check_selection_helper, data);
8543 }
8544
8545 static void
8546 gtk_tree_view_row_deleted (GtkTreeModel *model,
8547                            GtkTreePath  *path,
8548                            gpointer      data)
8549 {
8550   GtkTreeView *tree_view = (GtkTreeView *)data;
8551   GtkRBTree *tree;
8552   GtkRBNode *node;
8553   GList *list;
8554   gint selection_changed = FALSE;
8555
8556   g_return_if_fail (path != NULL);
8557
8558   gtk_tree_row_reference_deleted (G_OBJECT (data), path);
8559
8560   if (_gtk_tree_view_find_node (tree_view, path, &tree, &node))
8561     return;
8562
8563   if (tree == NULL)
8564     return;
8565
8566   /* check if the selection has been changed */
8567   _gtk_rbtree_traverse (tree, node, G_POST_ORDER,
8568                         check_selection_helper, &selection_changed);
8569
8570   for (list = tree_view->priv->columns; list; list = list->next)
8571     if (((GtkTreeViewColumn *)list->data)->visible &&
8572         ((GtkTreeViewColumn *)list->data)->column_type == GTK_TREE_VIEW_COLUMN_AUTOSIZE)
8573       _gtk_tree_view_column_cell_set_dirty ((GtkTreeViewColumn *)list->data, TRUE);
8574
8575   /* Ensure we don't have a dangling pointer to a dead node */
8576   ensure_unprelighted (tree_view);
8577
8578   /* Cancel editting if we've started */
8579   gtk_tree_view_stop_editing (tree_view, TRUE);
8580
8581   /* If we have a node expanded/collapsed timeout, remove it */
8582   remove_expand_collapse_timeout (tree_view);
8583
8584   if (tree_view->priv->destroy_count_func)
8585     {
8586       gint child_count = 0;
8587       if (node->children)
8588         _gtk_rbtree_traverse (node->children, node->children->root, G_POST_ORDER, count_children_helper, &child_count);
8589       tree_view->priv->destroy_count_func (tree_view, path, child_count, tree_view->priv->destroy_count_data);
8590     }
8591
8592   if (tree->root->count == 1)
8593     {
8594       if (tree_view->priv->tree == tree)
8595         tree_view->priv->tree = NULL;
8596
8597       _gtk_rbtree_remove (tree);
8598     }
8599   else
8600     {
8601       _gtk_rbtree_remove_node (tree, node);
8602     }
8603
8604   if (! gtk_tree_row_reference_valid (tree_view->priv->top_row))
8605     {
8606       gtk_tree_row_reference_free (tree_view->priv->top_row);
8607       tree_view->priv->top_row = NULL;
8608     }
8609
8610   install_scroll_sync_handler (tree_view);
8611
8612   gtk_widget_queue_resize (GTK_WIDGET (tree_view));
8613
8614   if (selection_changed)
8615     g_signal_emit_by_name (tree_view->priv->selection, "changed");
8616 }
8617
8618 static void
8619 gtk_tree_view_rows_reordered (GtkTreeModel *model,
8620                               GtkTreePath  *parent,
8621                               GtkTreeIter  *iter,
8622                               gint         *new_order,
8623                               gpointer      data)
8624 {
8625   GtkTreeView *tree_view = GTK_TREE_VIEW (data);
8626   GtkRBTree *tree;
8627   GtkRBNode *node;
8628   gint len;
8629
8630   len = gtk_tree_model_iter_n_children (model, iter);
8631
8632   if (len < 2)
8633     return;
8634
8635   gtk_tree_row_reference_reordered (G_OBJECT (data),
8636                                     parent,
8637                                     iter,
8638                                     new_order);
8639
8640   if (_gtk_tree_view_find_node (tree_view,
8641                                 parent,
8642                                 &tree,
8643                                 &node))
8644     return;
8645
8646   /* We need to special case the parent path */
8647   if (tree == NULL)
8648     tree = tree_view->priv->tree;
8649   else
8650     tree = node->children;
8651
8652   if (tree == NULL)
8653     return;
8654
8655   if (tree_view->priv->edited_column)
8656     gtk_tree_view_stop_editing (tree_view, TRUE);
8657
8658   /* we need to be unprelighted */
8659   ensure_unprelighted (tree_view);
8660
8661   /* clear the timeout */
8662   cancel_arrow_animation (tree_view);
8663
8664   _gtk_rbtree_reorder (tree, new_order, len);
8665
8666   gtk_widget_queue_draw (GTK_WIDGET (tree_view));
8667
8668   gtk_tree_view_dy_to_top_row (tree_view);
8669 }
8670
8671
8672 /* Internal tree functions
8673  */
8674
8675
8676 static void
8677 gtk_tree_view_get_background_xrange (GtkTreeView       *tree_view,
8678                                      GtkRBTree         *tree,
8679                                      GtkTreeViewColumn *column,
8680                                      gint              *x1,
8681                                      gint              *x2)
8682 {
8683   GtkTreeViewColumn *tmp_column = NULL;
8684   gint total_width;
8685   GList *list;
8686   gboolean rtl;
8687
8688   if (x1)
8689     *x1 = 0;
8690
8691   if (x2)
8692     *x2 = 0;
8693
8694   rtl = (gtk_widget_get_direction (GTK_WIDGET (tree_view)) == GTK_TEXT_DIR_RTL);
8695
8696   total_width = 0;
8697   for (list = (rtl ? g_list_last (tree_view->priv->columns) : g_list_first (tree_view->priv->columns));
8698        list;
8699        list = (rtl ? list->prev : list->next))
8700     {
8701       tmp_column = list->data;
8702
8703       if (tmp_column == column)
8704         break;
8705
8706       if (tmp_column->visible)
8707         total_width += tmp_column->width;
8708     }
8709
8710   if (tmp_column != column)
8711     {
8712       g_warning (G_STRLOC": passed-in column isn't in the tree");
8713       return;
8714     }
8715
8716   if (x1)
8717     *x1 = total_width;
8718
8719   if (x2)
8720     {
8721       if (column->visible)
8722         *x2 = total_width + column->width;
8723       else
8724         *x2 = total_width; /* width of 0 */
8725     }
8726 }
8727 static void
8728 gtk_tree_view_get_arrow_xrange (GtkTreeView *tree_view,
8729                                 GtkRBTree   *tree,
8730                                 gint        *x1,
8731                                 gint        *x2)
8732 {
8733   gint x_offset = 0;
8734   GList *list;
8735   GtkTreeViewColumn *tmp_column = NULL;
8736   gint total_width;
8737   gboolean indent_expanders;
8738   gboolean rtl;
8739
8740   rtl = (gtk_widget_get_direction (GTK_WIDGET (tree_view)) == GTK_TEXT_DIR_RTL);
8741
8742   total_width = 0;
8743   for (list = (rtl ? g_list_last (tree_view->priv->columns) : g_list_first (tree_view->priv->columns));
8744        list;
8745        list = (rtl ? list->prev : list->next))
8746     {
8747       tmp_column = list->data;
8748
8749       if (gtk_tree_view_is_expander_column (tree_view, tmp_column))
8750         {
8751           if (rtl)
8752             x_offset = total_width + tmp_column->width - tree_view->priv->expander_size;
8753           else
8754             x_offset = total_width;
8755           break;
8756         }
8757
8758       if (tmp_column->visible)
8759         total_width += tmp_column->width;
8760     }
8761
8762   gtk_widget_style_get (GTK_WIDGET (tree_view),
8763                         "indent-expanders", &indent_expanders,
8764                         NULL);
8765
8766   if (indent_expanders)
8767     {
8768       if (rtl)
8769         x_offset -= tree_view->priv->expander_size * _gtk_rbtree_get_depth (tree);
8770       else
8771         x_offset += tree_view->priv->expander_size * _gtk_rbtree_get_depth (tree);
8772     }
8773
8774   *x1 = x_offset;
8775
8776   if (tmp_column && tmp_column->visible)
8777     /* +1 because x2 isn't included in the range. */
8778     *x2 = *x1 + tree_view->priv->expander_size + 1;
8779   else
8780     *x2 = *x1;
8781 }
8782
8783 static void
8784 gtk_tree_view_build_tree (GtkTreeView *tree_view,
8785                           GtkRBTree   *tree,
8786                           GtkTreeIter *iter,
8787                           gint         depth,
8788                           gboolean     recurse)
8789 {
8790   GtkRBNode *temp = NULL;
8791   GtkTreePath *path = NULL;
8792   gboolean is_list = GTK_TREE_VIEW_FLAG_SET (tree_view, GTK_TREE_VIEW_IS_LIST);
8793
8794   do
8795     {
8796       gtk_tree_model_ref_node (tree_view->priv->model, iter);
8797       temp = _gtk_rbtree_insert_after (tree, temp, 0, FALSE);
8798
8799       if (tree_view->priv->fixed_height > 0)
8800         {
8801           if (GTK_RBNODE_FLAG_SET (temp, GTK_RBNODE_INVALID))
8802             {
8803               _gtk_rbtree_node_set_height (tree, temp, tree_view->priv->fixed_height);
8804               _gtk_rbtree_node_mark_valid (tree, temp);
8805             }
8806         }
8807
8808       if (is_list)
8809         continue;
8810
8811       if (recurse)
8812         {
8813           GtkTreeIter child;
8814
8815           if (!path)
8816             path = gtk_tree_model_get_path (tree_view->priv->model, iter);
8817           else
8818             gtk_tree_path_next (path);
8819
8820           if (gtk_tree_model_iter_children (tree_view->priv->model, &child, iter))
8821             {
8822               gboolean expand;
8823
8824               g_signal_emit (tree_view, tree_view_signals[TEST_EXPAND_ROW], 0, iter, path, &expand);
8825
8826               if (gtk_tree_model_iter_has_child (tree_view->priv->model, iter)
8827                   && !expand)
8828                 {
8829                   temp->children = _gtk_rbtree_new ();
8830                   temp->children->parent_tree = tree;
8831                   temp->children->parent_node = temp;
8832                   gtk_tree_view_build_tree (tree_view, temp->children, &child, depth + 1, recurse);
8833                 }
8834             }
8835         }
8836
8837       if (gtk_tree_model_iter_has_child (tree_view->priv->model, iter))
8838         {
8839           if ((temp->flags&GTK_RBNODE_IS_PARENT) != GTK_RBNODE_IS_PARENT)
8840             temp->flags ^= GTK_RBNODE_IS_PARENT;
8841         }
8842     }
8843   while (gtk_tree_model_iter_next (tree_view->priv->model, iter));
8844
8845   if (path)
8846     gtk_tree_path_free (path);
8847 }
8848
8849 /* Make sure the node is visible vertically */
8850 static void
8851 gtk_tree_view_clamp_node_visible (GtkTreeView *tree_view,
8852                                   GtkRBTree   *tree,
8853                                   GtkRBNode   *node)
8854 {
8855   gint node_dy, height;
8856   GtkTreePath *path = NULL;
8857
8858   if (!gtk_widget_get_realized (GTK_WIDGET (tree_view)))
8859     return;
8860
8861   /* just return if the node is visible, avoiding a costly expose */
8862   node_dy = _gtk_rbtree_node_find_offset (tree, node);
8863   height = ROW_HEIGHT (tree_view, GTK_RBNODE_GET_HEIGHT (node));
8864   if (! GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_INVALID)
8865       && node_dy >= tree_view->priv->vadjustment->value
8866       && node_dy + height <= (tree_view->priv->vadjustment->value
8867                               + tree_view->priv->vadjustment->page_size))
8868     return;
8869
8870   path = _gtk_tree_view_find_path (tree_view, tree, node);
8871   if (path)
8872     {
8873       /* We process updates because we want to clear old selected items when we scroll.
8874        * if this is removed, we get a "selection streak" at the bottom. */
8875       gdk_window_process_updates (tree_view->priv->bin_window, TRUE);
8876       gtk_tree_view_scroll_to_cell (tree_view, path, NULL, FALSE, 0.0, 0.0);
8877       gtk_tree_path_free (path);
8878     }
8879 }
8880
8881 static void
8882 gtk_tree_view_clamp_column_visible (GtkTreeView       *tree_view,
8883                                     GtkTreeViewColumn *column,
8884                                     gboolean           focus_to_cell)
8885 {
8886   gint x, width;
8887
8888   if (column == NULL)
8889     return;
8890
8891   x = column->button->allocation.x;
8892   width = column->button->allocation.width;
8893
8894   if (width > tree_view->priv->hadjustment->page_size)
8895     {
8896       /* The column is larger than the horizontal page size.  If the
8897        * column has cells which can be focussed individually, then we make
8898        * sure the cell which gets focus is fully visible (if even the
8899        * focus cell is bigger than the page size, we make sure the
8900        * left-hand side of the cell is visible).
8901        *
8902        * If the column does not have those so-called special cells, we
8903        * make sure the left-hand side of the column is visible.
8904        */
8905
8906       if (focus_to_cell && gtk_tree_view_has_special_cell (tree_view))
8907         {
8908           GtkTreePath *cursor_path;
8909           GdkRectangle background_area, cell_area, focus_area;
8910
8911           cursor_path = gtk_tree_row_reference_get_path (tree_view->priv->cursor);
8912
8913           gtk_tree_view_get_cell_area (tree_view,
8914                                        cursor_path, column, &cell_area);
8915           gtk_tree_view_get_background_area (tree_view,
8916                                              cursor_path, column,
8917                                              &background_area);
8918
8919           gtk_tree_path_free (cursor_path);
8920
8921           _gtk_tree_view_column_get_focus_area (column,
8922                                                 &background_area,
8923                                                 &cell_area,
8924                                                 &focus_area);
8925
8926           x = focus_area.x;
8927           width = focus_area.width;
8928
8929           if (width < tree_view->priv->hadjustment->page_size)
8930             {
8931               if ((tree_view->priv->hadjustment->value + tree_view->priv->hadjustment->page_size) < (x + width))
8932                 gtk_adjustment_set_value (tree_view->priv->hadjustment,
8933                                           x + width - tree_view->priv->hadjustment->page_size);
8934               else if (tree_view->priv->hadjustment->value > x)
8935                 gtk_adjustment_set_value (tree_view->priv->hadjustment, x);
8936             }
8937         }
8938
8939       gtk_adjustment_set_value (tree_view->priv->hadjustment,
8940                                 CLAMP (x,
8941                                        tree_view->priv->hadjustment->lower,
8942                                        tree_view->priv->hadjustment->upper
8943                                        - tree_view->priv->hadjustment->page_size));
8944     }
8945   else
8946     {
8947       if ((tree_view->priv->hadjustment->value + tree_view->priv->hadjustment->page_size) < (x + width))
8948           gtk_adjustment_set_value (tree_view->priv->hadjustment,
8949                                     x + width - tree_view->priv->hadjustment->page_size);
8950       else if (tree_view->priv->hadjustment->value > x)
8951         gtk_adjustment_set_value (tree_view->priv->hadjustment, x);
8952   }
8953 }
8954
8955 /* This function could be more efficient.  I'll optimize it if profiling seems
8956  * to imply that it is important */
8957 GtkTreePath *
8958 _gtk_tree_view_find_path (GtkTreeView *tree_view,
8959                           GtkRBTree   *tree,
8960                           GtkRBNode   *node)
8961 {
8962   GtkTreePath *path;
8963   GtkRBTree *tmp_tree;
8964   GtkRBNode *tmp_node, *last;
8965   gint count;
8966
8967   path = gtk_tree_path_new ();
8968
8969   g_return_val_if_fail (node != NULL, path);
8970   g_return_val_if_fail (node != tree->nil, path);
8971
8972   count = 1 + node->left->count;
8973
8974   last = node;
8975   tmp_node = node->parent;
8976   tmp_tree = tree;
8977   while (tmp_tree)
8978     {
8979       while (tmp_node != tmp_tree->nil)
8980         {
8981           if (tmp_node->right == last)
8982             count += 1 + tmp_node->left->count;
8983           last = tmp_node;
8984           tmp_node = tmp_node->parent;
8985         }
8986       gtk_tree_path_prepend_index (path, count - 1);
8987       last = tmp_tree->parent_node;
8988       tmp_tree = tmp_tree->parent_tree;
8989       if (last)
8990         {
8991           count = 1 + last->left->count;
8992           tmp_node = last->parent;
8993         }
8994     }
8995   return path;
8996 }
8997
8998 /* Returns TRUE if we ran out of tree before finding the path.  If the path is
8999  * invalid (ie. points to a node that's not in the tree), *tree and *node are
9000  * both set to NULL.
9001  */
9002 gboolean
9003 _gtk_tree_view_find_node (GtkTreeView  *tree_view,
9004                           GtkTreePath  *path,
9005                           GtkRBTree   **tree,
9006                           GtkRBNode   **node)
9007 {
9008   GtkRBNode *tmpnode = NULL;
9009   GtkRBTree *tmptree = tree_view->priv->tree;
9010   gint *indices = gtk_tree_path_get_indices (path);
9011   gint depth = gtk_tree_path_get_depth (path);
9012   gint i = 0;
9013
9014   *node = NULL;
9015   *tree = NULL;
9016
9017   if (depth == 0 || tmptree == NULL)
9018     return FALSE;
9019   do
9020     {
9021       tmpnode = _gtk_rbtree_find_count (tmptree, indices[i] + 1);
9022       ++i;
9023       if (tmpnode == NULL)
9024         {
9025           *tree = NULL;
9026           *node = NULL;
9027           return FALSE;
9028         }
9029       if (i >= depth)
9030         {
9031           *tree = tmptree;
9032           *node = tmpnode;
9033           return FALSE;
9034         }
9035       *tree = tmptree;
9036       *node = tmpnode;
9037       tmptree = tmpnode->children;
9038       if (tmptree == NULL)
9039         return TRUE;
9040     }
9041   while (1);
9042 }
9043
9044 static gboolean
9045 gtk_tree_view_is_expander_column (GtkTreeView       *tree_view,
9046                                   GtkTreeViewColumn *column)
9047 {
9048   GList *list;
9049
9050   if (GTK_TREE_VIEW_FLAG_SET (tree_view, GTK_TREE_VIEW_IS_LIST))
9051     return FALSE;
9052
9053   if (tree_view->priv->expander_column != NULL)
9054     {
9055       if (tree_view->priv->expander_column == column)
9056         return TRUE;
9057       return FALSE;
9058     }
9059   else
9060     {
9061       for (list = tree_view->priv->columns;
9062            list;
9063            list = list->next)
9064         if (((GtkTreeViewColumn *)list->data)->visible)
9065           break;
9066       if (list && list->data == column)
9067         return TRUE;
9068     }
9069   return FALSE;
9070 }
9071
9072 static void
9073 gtk_tree_view_add_move_binding (GtkBindingSet  *binding_set,
9074                                 guint           keyval,
9075                                 guint           modmask,
9076                                 gboolean        add_shifted_binding,
9077                                 GtkMovementStep step,
9078                                 gint            count)
9079 {
9080
9081   gtk_binding_entry_add_signal (binding_set, keyval, modmask,
9082                                 "move-cursor", 2,
9083                                 G_TYPE_ENUM, step,
9084                                 G_TYPE_INT, count);
9085
9086   if (add_shifted_binding)
9087     gtk_binding_entry_add_signal (binding_set, keyval, GDK_SHIFT_MASK,
9088                                   "move-cursor", 2,
9089                                   G_TYPE_ENUM, step,
9090                                   G_TYPE_INT, count);
9091
9092   if ((modmask & GDK_CONTROL_MASK) == GDK_CONTROL_MASK)
9093    return;
9094
9095   gtk_binding_entry_add_signal (binding_set, keyval, GDK_CONTROL_MASK | GDK_SHIFT_MASK,
9096                                 "move-cursor", 2,
9097                                 G_TYPE_ENUM, step,
9098                                 G_TYPE_INT, count);
9099
9100   gtk_binding_entry_add_signal (binding_set, keyval, GDK_CONTROL_MASK,
9101                                 "move-cursor", 2,
9102                                 G_TYPE_ENUM, step,
9103                                 G_TYPE_INT, count);
9104 }
9105
9106 static gint
9107 gtk_tree_view_unref_tree_helper (GtkTreeModel *model,
9108                                  GtkTreeIter  *iter,
9109                                  GtkRBTree    *tree,
9110                                  GtkRBNode    *node)
9111 {
9112   gint retval = FALSE;
9113   do
9114     {
9115       g_return_val_if_fail (node != NULL, FALSE);
9116
9117       if (node->children)
9118         {
9119           GtkTreeIter child;
9120           GtkRBTree *new_tree;
9121           GtkRBNode *new_node;
9122
9123           new_tree = node->children;
9124           new_node = new_tree->root;
9125
9126           while (new_node && new_node->left != new_tree->nil)
9127             new_node = new_node->left;
9128
9129           if (!gtk_tree_model_iter_children (model, &child, iter))
9130             return FALSE;
9131
9132           retval = retval || gtk_tree_view_unref_tree_helper (model, &child, new_tree, new_node);
9133         }
9134
9135       if (GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_SELECTED))
9136         retval = TRUE;
9137       gtk_tree_model_unref_node (model, iter);
9138       node = _gtk_rbtree_next (tree, node);
9139     }
9140   while (gtk_tree_model_iter_next (model, iter));
9141
9142   return retval;
9143 }
9144
9145 static gint
9146 gtk_tree_view_unref_and_check_selection_tree (GtkTreeView *tree_view,
9147                                               GtkRBTree   *tree)
9148 {
9149   GtkTreeIter iter;
9150   GtkTreePath *path;
9151   GtkRBNode *node;
9152   gint retval;
9153
9154   if (!tree)
9155     return FALSE;
9156
9157   node = tree->root;
9158   while (node && node->left != tree->nil)
9159     node = node->left;
9160
9161   g_return_val_if_fail (node != NULL, FALSE);
9162   path = _gtk_tree_view_find_path (tree_view, tree, node);
9163   gtk_tree_model_get_iter (GTK_TREE_MODEL (tree_view->priv->model),
9164                            &iter, path);
9165   retval = gtk_tree_view_unref_tree_helper (GTK_TREE_MODEL (tree_view->priv->model), &iter, tree, node);
9166   gtk_tree_path_free (path);
9167
9168   return retval;
9169 }
9170
9171 static void
9172 gtk_tree_view_set_column_drag_info (GtkTreeView       *tree_view,
9173                                     GtkTreeViewColumn *column)
9174 {
9175   GtkTreeViewColumn *left_column;
9176   GtkTreeViewColumn *cur_column = NULL;
9177   GtkTreeViewColumnReorder *reorder;
9178   gboolean rtl;
9179   GList *tmp_list;
9180   gint left;
9181
9182   /* We want to precalculate the motion list such that we know what column slots
9183    * are available.
9184    */
9185   left_column = NULL;
9186   rtl = (gtk_widget_get_direction (GTK_WIDGET (tree_view)) == GTK_TEXT_DIR_RTL);
9187
9188   /* First, identify all possible drop spots */
9189   if (rtl)
9190     tmp_list = g_list_last (tree_view->priv->columns);
9191   else
9192     tmp_list = g_list_first (tree_view->priv->columns);
9193
9194   while (tmp_list)
9195     {
9196       cur_column = GTK_TREE_VIEW_COLUMN (tmp_list->data);
9197       tmp_list = rtl?g_list_previous (tmp_list):g_list_next (tmp_list);
9198
9199       if (cur_column->visible == FALSE)
9200         continue;
9201
9202       /* If it's not the column moving and func tells us to skip over the column, we continue. */
9203       if (left_column != column && cur_column != column &&
9204           tree_view->priv->column_drop_func &&
9205           ! tree_view->priv->column_drop_func (tree_view, column, left_column, cur_column, tree_view->priv->column_drop_func_data))
9206         {
9207           left_column = cur_column;
9208           continue;
9209         }
9210       reorder = g_slice_new0 (GtkTreeViewColumnReorder);
9211       reorder->left_column = left_column;
9212       left_column = reorder->right_column = cur_column;
9213
9214       tree_view->priv->column_drag_info = g_list_append (tree_view->priv->column_drag_info, reorder);
9215     }
9216
9217   /* Add the last one */
9218   if (tree_view->priv->column_drop_func == NULL ||
9219       ((left_column != column) &&
9220        tree_view->priv->column_drop_func (tree_view, column, left_column, NULL, tree_view->priv->column_drop_func_data)))
9221     {
9222       reorder = g_slice_new0 (GtkTreeViewColumnReorder);
9223       reorder->left_column = left_column;
9224       reorder->right_column = NULL;
9225       tree_view->priv->column_drag_info = g_list_append (tree_view->priv->column_drag_info, reorder);
9226     }
9227
9228   /* We quickly check to see if it even makes sense to reorder columns. */
9229   /* If there is nothing that can be moved, then we return */
9230
9231   if (tree_view->priv->column_drag_info == NULL)
9232     return;
9233
9234   /* We know there are always 2 slots possbile, as you can always return column. */
9235   /* If that's all there is, return */
9236   if (tree_view->priv->column_drag_info->next == NULL ||
9237       (tree_view->priv->column_drag_info->next->next == NULL &&
9238        ((GtkTreeViewColumnReorder *)tree_view->priv->column_drag_info->data)->right_column == column &&
9239        ((GtkTreeViewColumnReorder *)tree_view->priv->column_drag_info->next->data)->left_column == column))
9240     {
9241       for (tmp_list = tree_view->priv->column_drag_info; tmp_list; tmp_list = tmp_list->next)
9242         g_slice_free (GtkTreeViewColumnReorder, tmp_list->data);
9243       g_list_free (tree_view->priv->column_drag_info);
9244       tree_view->priv->column_drag_info = NULL;
9245       return;
9246     }
9247   /* We fill in the ranges for the columns, now that we've isolated them */
9248   left = - TREE_VIEW_COLUMN_DRAG_DEAD_MULTIPLIER (tree_view);
9249
9250   for (tmp_list = tree_view->priv->column_drag_info; tmp_list; tmp_list = tmp_list->next)
9251     {
9252       reorder = (GtkTreeViewColumnReorder *) tmp_list->data;
9253
9254       reorder->left_align = left;
9255       if (tmp_list->next != NULL)
9256         {
9257           g_assert (tmp_list->next->data);
9258           left = reorder->right_align = (reorder->right_column->button->allocation.x +
9259                                          reorder->right_column->button->allocation.width +
9260                                          ((GtkTreeViewColumnReorder *)tmp_list->next->data)->left_column->button->allocation.x)/2;
9261         }
9262       else
9263         {
9264           gint width;
9265
9266           gdk_drawable_get_size (tree_view->priv->header_window, &width, NULL);
9267           reorder->right_align = width + TREE_VIEW_COLUMN_DRAG_DEAD_MULTIPLIER (tree_view);
9268         }
9269     }
9270 }
9271
9272 void
9273 _gtk_tree_view_column_start_drag (GtkTreeView       *tree_view,
9274                                   GtkTreeViewColumn *column)
9275 {
9276   GdkEvent *send_event;
9277   GtkAllocation allocation;
9278   gint x, y, width, height;
9279   GdkScreen *screen = gtk_widget_get_screen (GTK_WIDGET (tree_view));
9280   GdkDisplay *display = gdk_screen_get_display (screen);
9281
9282   g_return_if_fail (tree_view->priv->column_drag_info == NULL);
9283   g_return_if_fail (tree_view->priv->cur_reorder == NULL);
9284
9285   gtk_tree_view_set_column_drag_info (tree_view, column);
9286
9287   if (tree_view->priv->column_drag_info == NULL)
9288     return;
9289
9290   if (tree_view->priv->drag_window == NULL)
9291     {
9292       GdkWindowAttr attributes;
9293       guint attributes_mask;
9294
9295       attributes.window_type = GDK_WINDOW_CHILD;
9296       attributes.wclass = GDK_INPUT_OUTPUT;
9297       attributes.x = column->button->allocation.x;
9298       attributes.y = 0;
9299       attributes.width = column->button->allocation.width;
9300       attributes.height = column->button->allocation.height;
9301       attributes.visual = gtk_widget_get_visual (GTK_WIDGET (tree_view));
9302       attributes.colormap = gtk_widget_get_colormap (GTK_WIDGET (tree_view));
9303       attributes.event_mask = GDK_VISIBILITY_NOTIFY_MASK | GDK_EXPOSURE_MASK | GDK_POINTER_MOTION_MASK;
9304       attributes_mask = GDK_WA_X | GDK_WA_Y | GDK_WA_VISUAL | GDK_WA_COLORMAP;
9305
9306       tree_view->priv->drag_window = gdk_window_new (tree_view->priv->bin_window,
9307                                                      &attributes,
9308                                                      attributes_mask);
9309       gdk_window_set_user_data (tree_view->priv->drag_window, GTK_WIDGET (tree_view));
9310     }
9311
9312   gdk_display_pointer_ungrab (display, GDK_CURRENT_TIME);
9313   gdk_display_keyboard_ungrab (display, GDK_CURRENT_TIME);
9314
9315   gtk_grab_remove (column->button);
9316
9317   send_event = gdk_event_new (GDK_LEAVE_NOTIFY);
9318   send_event->crossing.send_event = TRUE;
9319   send_event->crossing.window = g_object_ref (GTK_BUTTON (column->button)->event_window);
9320   send_event->crossing.subwindow = NULL;
9321   send_event->crossing.detail = GDK_NOTIFY_ANCESTOR;
9322   send_event->crossing.time = GDK_CURRENT_TIME;
9323
9324   gtk_propagate_event (column->button, send_event);
9325   gdk_event_free (send_event);
9326
9327   send_event = gdk_event_new (GDK_BUTTON_RELEASE);
9328   send_event->button.window = g_object_ref (gdk_screen_get_root_window (screen));
9329   send_event->button.send_event = TRUE;
9330   send_event->button.time = GDK_CURRENT_TIME;
9331   send_event->button.x = -1;
9332   send_event->button.y = -1;
9333   send_event->button.axes = NULL;
9334   send_event->button.state = 0;
9335   send_event->button.button = 1;
9336   send_event->button.device = gdk_display_get_core_pointer (display);
9337   send_event->button.x_root = 0;
9338   send_event->button.y_root = 0;
9339
9340   gtk_propagate_event (column->button, send_event);
9341   gdk_event_free (send_event);
9342
9343   /* Kids, don't try this at home */
9344   g_object_ref (column->button);
9345   gtk_container_remove (GTK_CONTAINER (tree_view), column->button);
9346   gtk_widget_set_parent_window (column->button, tree_view->priv->drag_window);
9347   gtk_widget_set_parent (column->button, GTK_WIDGET (tree_view));
9348   g_object_unref (column->button);
9349
9350   tree_view->priv->drag_column_x = column->button->allocation.x;
9351   allocation = column->button->allocation;
9352   allocation.x = 0;
9353   gtk_widget_size_allocate (column->button, &allocation);
9354   gtk_widget_set_parent_window (column->button, tree_view->priv->drag_window);
9355
9356   tree_view->priv->drag_column = column;
9357   gdk_window_show (tree_view->priv->drag_window);
9358
9359   gdk_window_get_origin (tree_view->priv->header_window, &x, &y);
9360   gdk_drawable_get_size (tree_view->priv->header_window, &width, &height);
9361
9362   gtk_widget_grab_focus (GTK_WIDGET (tree_view));
9363   while (gtk_events_pending ())
9364     gtk_main_iteration ();
9365
9366   GTK_TREE_VIEW_SET_FLAG (tree_view, GTK_TREE_VIEW_IN_COLUMN_DRAG);
9367   gdk_pointer_grab (tree_view->priv->drag_window,
9368                     FALSE,
9369                     GDK_POINTER_MOTION_MASK|GDK_BUTTON_RELEASE_MASK,
9370                     NULL, NULL, GDK_CURRENT_TIME);
9371   gdk_keyboard_grab (tree_view->priv->drag_window,
9372                      FALSE,
9373                      GDK_CURRENT_TIME);
9374 }
9375
9376 static void
9377 gtk_tree_view_queue_draw_arrow (GtkTreeView        *tree_view,
9378                                 GtkRBTree          *tree,
9379                                 GtkRBNode          *node,
9380                                 const GdkRectangle *clip_rect)
9381 {
9382   GdkRectangle rect;
9383
9384   if (!gtk_widget_get_realized (GTK_WIDGET (tree_view)))
9385     return;
9386
9387   rect.x = 0;
9388   rect.width = MAX (tree_view->priv->expander_size, MAX (tree_view->priv->width, GTK_WIDGET (tree_view)->allocation.width));
9389
9390   rect.y = BACKGROUND_FIRST_PIXEL (tree_view, tree, node);
9391   rect.height = ROW_HEIGHT (tree_view, BACKGROUND_HEIGHT (node));
9392
9393   if (clip_rect)
9394     {
9395       GdkRectangle new_rect;
9396
9397       gdk_rectangle_intersect (clip_rect, &rect, &new_rect);
9398
9399       gdk_window_invalidate_rect (tree_view->priv->bin_window, &new_rect, TRUE);
9400     }
9401   else
9402     {
9403       gdk_window_invalidate_rect (tree_view->priv->bin_window, &rect, TRUE);
9404     }
9405 }
9406
9407 void
9408 _gtk_tree_view_queue_draw_node (GtkTreeView        *tree_view,
9409                                 GtkRBTree          *tree,
9410                                 GtkRBNode          *node,
9411                                 const GdkRectangle *clip_rect)
9412 {
9413   GdkRectangle rect;
9414
9415   if (!gtk_widget_get_realized (GTK_WIDGET (tree_view)))
9416     return;
9417
9418   rect.x = 0;
9419   rect.width = MAX (tree_view->priv->width, GTK_WIDGET (tree_view)->allocation.width);
9420
9421   rect.y = BACKGROUND_FIRST_PIXEL (tree_view, tree, node);
9422   rect.height = ROW_HEIGHT (tree_view, BACKGROUND_HEIGHT (node));
9423
9424   if (clip_rect)
9425     {
9426       GdkRectangle new_rect;
9427
9428       gdk_rectangle_intersect (clip_rect, &rect, &new_rect);
9429
9430       gdk_window_invalidate_rect (tree_view->priv->bin_window, &new_rect, TRUE);
9431     }
9432   else
9433     {
9434       gdk_window_invalidate_rect (tree_view->priv->bin_window, &rect, TRUE);
9435     }
9436 }
9437
9438 static void
9439 gtk_tree_view_queue_draw_path (GtkTreeView        *tree_view,
9440                                GtkTreePath        *path,
9441                                const GdkRectangle *clip_rect)
9442 {
9443   GtkRBTree *tree = NULL;
9444   GtkRBNode *node = NULL;
9445
9446   _gtk_tree_view_find_node (tree_view, path, &tree, &node);
9447
9448   if (tree)
9449     _gtk_tree_view_queue_draw_node (tree_view, tree, node, clip_rect);
9450 }
9451
9452 /* x and y are the mouse position
9453  */
9454 static void
9455 gtk_tree_view_draw_arrow (GtkTreeView *tree_view,
9456                           GtkRBTree   *tree,
9457                           GtkRBNode   *node,
9458                           /* in bin_window coordinates */
9459                           gint         x,
9460                           gint         y)
9461 {
9462   GdkRectangle area;
9463   GtkStateType state;
9464   GtkWidget *widget;
9465   gint x_offset = 0;
9466   gint x2;
9467   gint vertical_separator;
9468   gint expander_size;
9469   GtkExpanderStyle expander_style;
9470
9471   widget = GTK_WIDGET (tree_view);
9472
9473   gtk_widget_style_get (widget,
9474                         "vertical-separator", &vertical_separator,
9475                         NULL);
9476   expander_size = tree_view->priv->expander_size - EXPANDER_EXTRA_PADDING;
9477
9478   if (! GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_PARENT))
9479     return;
9480
9481   gtk_tree_view_get_arrow_xrange (tree_view, tree, &x_offset, &x2);
9482
9483   area.x = x_offset;
9484   area.y = CELL_FIRST_PIXEL (tree_view, tree, node, vertical_separator);
9485   area.width = expander_size + 2;
9486   area.height = MAX (CELL_HEIGHT (node, vertical_separator), (expander_size - vertical_separator));
9487
9488   if (gtk_widget_get_state (widget) == GTK_STATE_INSENSITIVE)
9489     {
9490       state = GTK_STATE_INSENSITIVE;
9491     }
9492   else if (node == tree_view->priv->button_pressed_node)
9493     {
9494       if (x >= area.x && x <= (area.x + area.width) &&
9495           y >= area.y && y <= (area.y + area.height))
9496         state = GTK_STATE_ACTIVE;
9497       else
9498         state = GTK_STATE_NORMAL;
9499     }
9500   else
9501     {
9502       if (node == tree_view->priv->prelight_node &&
9503           GTK_TREE_VIEW_FLAG_SET (tree_view, GTK_TREE_VIEW_ARROW_PRELIT))
9504         state = GTK_STATE_PRELIGHT;
9505       else
9506         state = GTK_STATE_NORMAL;
9507     }
9508
9509   if (GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_SEMI_EXPANDED))
9510     expander_style = GTK_EXPANDER_SEMI_EXPANDED;
9511   else if (GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_SEMI_COLLAPSED))
9512     expander_style = GTK_EXPANDER_SEMI_COLLAPSED;
9513   else if (node->children != NULL)
9514     expander_style = GTK_EXPANDER_EXPANDED;
9515   else
9516     expander_style = GTK_EXPANDER_COLLAPSED;
9517
9518   gtk_paint_expander (widget->style,
9519                       tree_view->priv->bin_window,
9520                       state,
9521                       &area,
9522                       widget,
9523                       "treeview",
9524                       area.x + area.width / 2,
9525                       area.y + area.height / 2,
9526                       expander_style);
9527 }
9528
9529 static void
9530 gtk_tree_view_focus_to_cursor (GtkTreeView *tree_view)
9531
9532 {
9533   GtkTreePath *cursor_path;
9534
9535   if ((tree_view->priv->tree == NULL) ||
9536       (! gtk_widget_get_realized (GTK_WIDGET (tree_view))))
9537     return;
9538
9539   cursor_path = NULL;
9540   if (tree_view->priv->cursor)
9541     cursor_path = gtk_tree_row_reference_get_path (tree_view->priv->cursor);
9542
9543   if (cursor_path == NULL)
9544     {
9545       /* Consult the selection before defaulting to the
9546        * first focusable element
9547        */
9548       GList *selected_rows;
9549       GtkTreeModel *model;
9550       GtkTreeSelection *selection;
9551
9552       selection = gtk_tree_view_get_selection (tree_view);
9553       selected_rows = gtk_tree_selection_get_selected_rows (selection, &model);
9554
9555       if (selected_rows)
9556         {
9557           cursor_path = gtk_tree_path_copy((const GtkTreePath *)(selected_rows->data));
9558           g_list_foreach (selected_rows, (GFunc)gtk_tree_path_free, NULL);
9559           g_list_free (selected_rows);
9560         }
9561       else
9562         {
9563           cursor_path = gtk_tree_path_new_first ();
9564           search_first_focusable_path (tree_view, &cursor_path,
9565                                        TRUE, NULL, NULL);
9566         }
9567
9568       gtk_tree_row_reference_free (tree_view->priv->cursor);
9569       tree_view->priv->cursor = NULL;
9570
9571       if (cursor_path)
9572         {
9573           if (tree_view->priv->selection->type == GTK_SELECTION_MULTIPLE)
9574             gtk_tree_view_real_set_cursor (tree_view, cursor_path, FALSE, FALSE);
9575           else
9576             gtk_tree_view_real_set_cursor (tree_view, cursor_path, TRUE, FALSE);
9577         }
9578     }
9579
9580   if (cursor_path)
9581     {
9582       GTK_TREE_VIEW_SET_FLAG (tree_view, GTK_TREE_VIEW_DRAW_KEYFOCUS);
9583
9584       gtk_tree_view_queue_draw_path (tree_view, cursor_path, NULL);
9585       gtk_tree_path_free (cursor_path);
9586
9587       if (tree_view->priv->focus_column == NULL)
9588         {
9589           GList *list;
9590           for (list = tree_view->priv->columns; list; list = list->next)
9591             {
9592               if (GTK_TREE_VIEW_COLUMN (list->data)->visible)
9593                 {
9594                   tree_view->priv->focus_column = GTK_TREE_VIEW_COLUMN (list->data);
9595                   break;
9596                 }
9597             }
9598         }
9599     }
9600 }
9601
9602 static void
9603 gtk_tree_view_move_cursor_up_down (GtkTreeView *tree_view,
9604                                    gint         count)
9605 {
9606   gint selection_count;
9607   GtkRBTree *cursor_tree = NULL;
9608   GtkRBNode *cursor_node = NULL;
9609   GtkRBTree *new_cursor_tree = NULL;
9610   GtkRBNode *new_cursor_node = NULL;
9611   GtkTreePath *cursor_path = NULL;
9612   gboolean grab_focus = TRUE;
9613   gboolean selectable;
9614
9615   if (! gtk_widget_has_focus (GTK_WIDGET (tree_view)))
9616     return;
9617
9618   cursor_path = NULL;
9619   if (!gtk_tree_row_reference_valid (tree_view->priv->cursor))
9620     /* FIXME: we lost the cursor; should we get the first? */
9621     return;
9622
9623   cursor_path = gtk_tree_row_reference_get_path (tree_view->priv->cursor);
9624   _gtk_tree_view_find_node (tree_view, cursor_path,
9625                             &cursor_tree, &cursor_node);
9626
9627   if (cursor_tree == NULL)
9628     /* FIXME: we lost the cursor; should we get the first? */
9629     return;
9630
9631   selection_count = gtk_tree_selection_count_selected_rows (tree_view->priv->selection);
9632   selectable = _gtk_tree_selection_row_is_selectable (tree_view->priv->selection,
9633                                                       cursor_node,
9634                                                       cursor_path);
9635
9636   if (selection_count == 0
9637       && tree_view->priv->selection->type != GTK_SELECTION_NONE
9638       && !tree_view->priv->ctrl_pressed
9639       && selectable)
9640     {
9641       /* Don't move the cursor, but just select the current node */
9642       new_cursor_tree = cursor_tree;
9643       new_cursor_node = cursor_node;
9644     }
9645   else
9646     {
9647       if (count == -1)
9648         _gtk_rbtree_prev_full (cursor_tree, cursor_node,
9649                                &new_cursor_tree, &new_cursor_node);
9650       else
9651         _gtk_rbtree_next_full (cursor_tree, cursor_node,
9652                                &new_cursor_tree, &new_cursor_node);
9653     }
9654
9655   gtk_tree_path_free (cursor_path);
9656
9657   if (new_cursor_node)
9658     {
9659       cursor_path = _gtk_tree_view_find_path (tree_view,
9660                                               new_cursor_tree, new_cursor_node);
9661
9662       search_first_focusable_path (tree_view, &cursor_path,
9663                                    (count != -1),
9664                                    &new_cursor_tree,
9665                                    &new_cursor_node);
9666
9667       if (cursor_path)
9668         gtk_tree_path_free (cursor_path);
9669     }
9670
9671   /*
9672    * If the list has only one item and multi-selection is set then select
9673    * the row (if not yet selected).
9674    */
9675   if (tree_view->priv->selection->type == GTK_SELECTION_MULTIPLE &&
9676       new_cursor_node == NULL)
9677     {
9678       if (count == -1)
9679         _gtk_rbtree_next_full (cursor_tree, cursor_node,
9680                                &new_cursor_tree, &new_cursor_node);
9681       else
9682         _gtk_rbtree_prev_full (cursor_tree, cursor_node,
9683                                &new_cursor_tree, &new_cursor_node);
9684
9685       if (new_cursor_node == NULL
9686           && !GTK_RBNODE_FLAG_SET (cursor_node, GTK_RBNODE_IS_SELECTED))
9687         {
9688           new_cursor_node = cursor_node;
9689           new_cursor_tree = cursor_tree;
9690         }
9691       else
9692         {
9693           new_cursor_node = NULL;
9694         }
9695     }
9696
9697   if (new_cursor_node)
9698     {
9699       cursor_path = _gtk_tree_view_find_path (tree_view, new_cursor_tree, new_cursor_node);
9700       gtk_tree_view_real_set_cursor (tree_view, cursor_path, TRUE, TRUE);
9701       gtk_tree_path_free (cursor_path);
9702     }
9703   else
9704     {
9705       gtk_tree_view_clamp_node_visible (tree_view, cursor_tree, cursor_node);
9706
9707       if (!tree_view->priv->shift_pressed)
9708         {
9709           if (! gtk_widget_keynav_failed (GTK_WIDGET (tree_view),
9710                                           count < 0 ?
9711                                           GTK_DIR_UP : GTK_DIR_DOWN))
9712             {
9713               GtkWidget *toplevel = gtk_widget_get_toplevel (GTK_WIDGET (tree_view));
9714
9715               if (toplevel)
9716                 gtk_widget_child_focus (toplevel,
9717                                         count < 0 ?
9718                                         GTK_DIR_TAB_BACKWARD :
9719                                         GTK_DIR_TAB_FORWARD);
9720
9721               grab_focus = FALSE;
9722             }
9723         }
9724       else
9725         {
9726           gtk_widget_error_bell (GTK_WIDGET (tree_view));
9727         }
9728     }
9729
9730   if (grab_focus)
9731     gtk_widget_grab_focus (GTK_WIDGET (tree_view));
9732 }
9733
9734 static void
9735 gtk_tree_view_move_cursor_page_up_down (GtkTreeView *tree_view,
9736                                         gint         count)
9737 {
9738   GtkRBTree *cursor_tree = NULL;
9739   GtkRBNode *cursor_node = NULL;
9740   GtkTreePath *old_cursor_path = NULL;
9741   GtkTreePath *cursor_path = NULL;
9742   GtkRBTree *start_cursor_tree = NULL;
9743   GtkRBNode *start_cursor_node = NULL;
9744   gint y;
9745   gint window_y;
9746   gint vertical_separator;
9747
9748   if (!gtk_widget_has_focus (GTK_WIDGET (tree_view)))
9749     return;
9750
9751   if (gtk_tree_row_reference_valid (tree_view->priv->cursor))
9752     old_cursor_path = gtk_tree_row_reference_get_path (tree_view->priv->cursor);
9753   else
9754     /* This is sorta weird.  Focus in should give us a cursor */
9755     return;
9756
9757   gtk_widget_style_get (GTK_WIDGET (tree_view), "vertical-separator", &vertical_separator, NULL);
9758   _gtk_tree_view_find_node (tree_view, old_cursor_path,
9759                             &cursor_tree, &cursor_node);
9760
9761   if (cursor_tree == NULL)
9762     {
9763       /* FIXME: we lost the cursor.  Should we try to get one? */
9764       gtk_tree_path_free (old_cursor_path);
9765       return;
9766     }
9767   g_return_if_fail (cursor_node != NULL);
9768
9769   y = _gtk_rbtree_node_find_offset (cursor_tree, cursor_node);
9770   window_y = RBTREE_Y_TO_TREE_WINDOW_Y (tree_view, y);
9771   y += tree_view->priv->cursor_offset;
9772   y += count * (int)tree_view->priv->vadjustment->page_increment;
9773   y = CLAMP (y, (gint)tree_view->priv->vadjustment->lower,  (gint)tree_view->priv->vadjustment->upper - vertical_separator);
9774
9775   if (y >= tree_view->priv->height)
9776     y = tree_view->priv->height - 1;
9777
9778   tree_view->priv->cursor_offset =
9779     _gtk_rbtree_find_offset (tree_view->priv->tree, y,
9780                              &cursor_tree, &cursor_node);
9781
9782   if (tree_view->priv->cursor_offset > BACKGROUND_HEIGHT (cursor_node))
9783     {
9784       _gtk_rbtree_next_full (cursor_tree, cursor_node,
9785                              &cursor_tree, &cursor_node);
9786       tree_view->priv->cursor_offset -= BACKGROUND_HEIGHT (cursor_node);
9787     }
9788
9789   y -= tree_view->priv->cursor_offset;
9790   cursor_path = _gtk_tree_view_find_path (tree_view, cursor_tree, cursor_node);
9791
9792   start_cursor_tree = cursor_tree;
9793   start_cursor_node = cursor_node;
9794
9795   if (! search_first_focusable_path (tree_view, &cursor_path,
9796                                      (count != -1),
9797                                      &cursor_tree, &cursor_node))
9798     {
9799       /* It looks like we reached the end of the view without finding
9800        * a focusable row.  We will step backwards to find the last
9801        * focusable row.
9802        */
9803       cursor_tree = start_cursor_tree;
9804       cursor_node = start_cursor_node;
9805       cursor_path = _gtk_tree_view_find_path (tree_view, cursor_tree, cursor_node);
9806
9807       search_first_focusable_path (tree_view, &cursor_path,
9808                                    (count == -1),
9809                                    &cursor_tree, &cursor_node);
9810     }
9811
9812   if (!cursor_path)
9813     goto cleanup;
9814
9815   /* update y */
9816   y = _gtk_rbtree_node_find_offset (cursor_tree, cursor_node);
9817
9818   gtk_tree_view_real_set_cursor (tree_view, cursor_path, TRUE, FALSE);
9819
9820   y -= window_y;
9821   gtk_tree_view_scroll_to_point (tree_view, -1, y);
9822   gtk_tree_view_clamp_node_visible (tree_view, cursor_tree, cursor_node);
9823   _gtk_tree_view_queue_draw_node (tree_view, cursor_tree, cursor_node, NULL);
9824
9825   if (!gtk_tree_path_compare (old_cursor_path, cursor_path))
9826     gtk_widget_error_bell (GTK_WIDGET (tree_view));
9827
9828   gtk_widget_grab_focus (GTK_WIDGET (tree_view));
9829
9830 cleanup:
9831   gtk_tree_path_free (old_cursor_path);
9832   gtk_tree_path_free (cursor_path);
9833 }
9834
9835 static void
9836 gtk_tree_view_move_cursor_left_right (GtkTreeView *tree_view,
9837                                       gint         count)
9838 {
9839   GtkRBTree *cursor_tree = NULL;
9840   GtkRBNode *cursor_node = NULL;
9841   GtkTreePath *cursor_path = NULL;
9842   GtkTreeViewColumn *column;
9843   GtkTreeIter iter;
9844   GList *list;
9845   gboolean found_column = FALSE;
9846   gboolean rtl;
9847
9848   rtl = (gtk_widget_get_direction (GTK_WIDGET (tree_view)) == GTK_TEXT_DIR_RTL);
9849
9850   if (!gtk_widget_has_focus (GTK_WIDGET (tree_view)))
9851     return;
9852
9853   if (gtk_tree_row_reference_valid (tree_view->priv->cursor))
9854     cursor_path = gtk_tree_row_reference_get_path (tree_view->priv->cursor);
9855   else
9856     return;
9857
9858   _gtk_tree_view_find_node (tree_view, cursor_path, &cursor_tree, &cursor_node);
9859   if (cursor_tree == NULL)
9860     return;
9861   if (gtk_tree_model_get_iter (tree_view->priv->model, &iter, cursor_path) == FALSE)
9862     {
9863       gtk_tree_path_free (cursor_path);
9864       return;
9865     }
9866   gtk_tree_path_free (cursor_path);
9867
9868   list = rtl ? g_list_last (tree_view->priv->columns) : g_list_first (tree_view->priv->columns);
9869   if (tree_view->priv->focus_column)
9870     {
9871       for (; list; list = (rtl ? list->prev : list->next))
9872         {
9873           if (list->data == tree_view->priv->focus_column)
9874             break;
9875         }
9876     }
9877
9878   while (list)
9879     {
9880       gboolean left, right;
9881
9882       column = list->data;
9883       if (column->visible == FALSE)
9884         goto loop_end;
9885
9886       gtk_tree_view_column_cell_set_cell_data (column,
9887                                                tree_view->priv->model,
9888                                                &iter,
9889                                                GTK_RBNODE_FLAG_SET (cursor_node, GTK_RBNODE_IS_PARENT),
9890                                                cursor_node->children?TRUE:FALSE);
9891
9892       if (rtl)
9893         {
9894           right = list->prev ? TRUE : FALSE;
9895           left = list->next ? TRUE : FALSE;
9896         }
9897       else
9898         {
9899           left = list->prev ? TRUE : FALSE;
9900           right = list->next ? TRUE : FALSE;
9901         }
9902
9903       if (_gtk_tree_view_column_cell_focus (column, count, left, right))
9904         {
9905           tree_view->priv->focus_column = column;
9906           found_column = TRUE;
9907           break;
9908         }
9909     loop_end:
9910       if (count == 1)
9911         list = rtl ? list->prev : list->next;
9912       else
9913         list = rtl ? list->next : list->prev;
9914     }
9915
9916   if (found_column)
9917     {
9918       if (!gtk_tree_view_has_special_cell (tree_view))
9919         _gtk_tree_view_queue_draw_node (tree_view,
9920                                         cursor_tree,
9921                                         cursor_node,
9922                                         NULL);
9923       g_signal_emit (tree_view, tree_view_signals[CURSOR_CHANGED], 0);
9924       gtk_widget_grab_focus (GTK_WIDGET (tree_view));
9925     }
9926   else
9927     {
9928       gtk_widget_error_bell (GTK_WIDGET (tree_view));
9929     }
9930
9931   gtk_tree_view_clamp_column_visible (tree_view,
9932                                       tree_view->priv->focus_column, TRUE);
9933 }
9934
9935 static void
9936 gtk_tree_view_move_cursor_start_end (GtkTreeView *tree_view,
9937                                      gint         count)
9938 {
9939   GtkRBTree *cursor_tree;
9940   GtkRBNode *cursor_node;
9941   GtkTreePath *path;
9942   GtkTreePath *old_path;
9943
9944   if (!gtk_widget_has_focus (GTK_WIDGET (tree_view)))
9945     return;
9946
9947   g_return_if_fail (tree_view->priv->tree != NULL);
9948
9949   gtk_tree_view_get_cursor (tree_view, &old_path, NULL);
9950
9951   cursor_tree = tree_view->priv->tree;
9952   cursor_node = cursor_tree->root;
9953
9954   if (count == -1)
9955     {
9956       while (cursor_node && cursor_node->left != cursor_tree->nil)
9957         cursor_node = cursor_node->left;
9958
9959       /* Now go forward to find the first focusable row. */
9960       path = _gtk_tree_view_find_path (tree_view, cursor_tree, cursor_node);
9961       search_first_focusable_path (tree_view, &path,
9962                                    TRUE, &cursor_tree, &cursor_node);
9963     }
9964   else
9965     {
9966       do
9967         {
9968           while (cursor_node && cursor_node->right != cursor_tree->nil)
9969             cursor_node = cursor_node->right;
9970           if (cursor_node->children == NULL)
9971             break;
9972
9973           cursor_tree = cursor_node->children;
9974           cursor_node = cursor_tree->root;
9975         }
9976       while (1);
9977
9978       /* Now go backwards to find last focusable row. */
9979       path = _gtk_tree_view_find_path (tree_view, cursor_tree, cursor_node);
9980       search_first_focusable_path (tree_view, &path,
9981                                    FALSE, &cursor_tree, &cursor_node);
9982     }
9983
9984   if (!path)
9985     goto cleanup;
9986
9987   if (gtk_tree_path_compare (old_path, path))
9988     {
9989       gtk_tree_view_real_set_cursor (tree_view, path, TRUE, TRUE);
9990       gtk_widget_grab_focus (GTK_WIDGET (tree_view));
9991     }
9992   else
9993     {
9994       gtk_widget_error_bell (GTK_WIDGET (tree_view));
9995     }
9996
9997 cleanup:
9998   gtk_tree_path_free (old_path);
9999   gtk_tree_path_free (path);
10000 }
10001
10002 static gboolean
10003 gtk_tree_view_real_select_all (GtkTreeView *tree_view)
10004 {
10005   if (!gtk_widget_has_focus (GTK_WIDGET (tree_view)))
10006     return FALSE;
10007
10008   if (tree_view->priv->selection->type != GTK_SELECTION_MULTIPLE)
10009     return FALSE;
10010
10011   gtk_tree_selection_select_all (tree_view->priv->selection);
10012
10013   return TRUE;
10014 }
10015
10016 static gboolean
10017 gtk_tree_view_real_unselect_all (GtkTreeView *tree_view)
10018 {
10019   if (!gtk_widget_has_focus (GTK_WIDGET (tree_view)))
10020     return FALSE;
10021
10022   if (tree_view->priv->selection->type != GTK_SELECTION_MULTIPLE)
10023     return FALSE;
10024
10025   gtk_tree_selection_unselect_all (tree_view->priv->selection);
10026
10027   return TRUE;
10028 }
10029
10030 static gboolean
10031 gtk_tree_view_real_select_cursor_row (GtkTreeView *tree_view,
10032                                       gboolean     start_editing)
10033 {
10034   GtkRBTree *new_tree = NULL;
10035   GtkRBNode *new_node = NULL;
10036   GtkRBTree *cursor_tree = NULL;
10037   GtkRBNode *cursor_node = NULL;
10038   GtkTreePath *cursor_path = NULL;
10039   GtkTreeSelectMode mode = 0;
10040
10041   if (!gtk_widget_has_focus (GTK_WIDGET (tree_view)))
10042     return FALSE;
10043
10044   if (tree_view->priv->cursor)
10045     cursor_path = gtk_tree_row_reference_get_path (tree_view->priv->cursor);
10046
10047   if (cursor_path == NULL)
10048     return FALSE;
10049
10050   _gtk_tree_view_find_node (tree_view, cursor_path,
10051                             &cursor_tree, &cursor_node);
10052
10053   if (cursor_tree == NULL)
10054     {
10055       gtk_tree_path_free (cursor_path);
10056       return FALSE;
10057     }
10058
10059   if (!tree_view->priv->shift_pressed && start_editing &&
10060       tree_view->priv->focus_column)
10061     {
10062       if (gtk_tree_view_start_editing (tree_view, cursor_path))
10063         {
10064           gtk_tree_path_free (cursor_path);
10065           return TRUE;
10066         }
10067     }
10068
10069   if (tree_view->priv->ctrl_pressed)
10070     mode |= GTK_TREE_SELECT_MODE_TOGGLE;
10071   if (tree_view->priv->shift_pressed)
10072     mode |= GTK_TREE_SELECT_MODE_EXTEND;
10073
10074   _gtk_tree_selection_internal_select_node (tree_view->priv->selection,
10075                                             cursor_node,
10076                                             cursor_tree,
10077                                             cursor_path,
10078                                             mode,
10079                                             FALSE);
10080
10081   /* We bail out if the original (tree, node) don't exist anymore after
10082    * handling the selection-changed callback.  We do return TRUE because
10083    * the key press has been handled at this point.
10084    */
10085   _gtk_tree_view_find_node (tree_view, cursor_path, &new_tree, &new_node);
10086
10087   if (cursor_tree != new_tree || cursor_node != new_node)
10088     return FALSE;
10089
10090   gtk_tree_view_clamp_node_visible (tree_view, cursor_tree, cursor_node);
10091
10092   gtk_widget_grab_focus (GTK_WIDGET (tree_view));
10093   _gtk_tree_view_queue_draw_node (tree_view, cursor_tree, cursor_node, NULL);
10094
10095   if (!tree_view->priv->shift_pressed)
10096     gtk_tree_view_row_activated (tree_view, cursor_path,
10097                                  tree_view->priv->focus_column);
10098
10099   gtk_tree_path_free (cursor_path);
10100
10101   return TRUE;
10102 }
10103
10104 static gboolean
10105 gtk_tree_view_real_toggle_cursor_row (GtkTreeView *tree_view)
10106 {
10107   GtkRBTree *new_tree = NULL;
10108   GtkRBNode *new_node = NULL;
10109   GtkRBTree *cursor_tree = NULL;
10110   GtkRBNode *cursor_node = NULL;
10111   GtkTreePath *cursor_path = NULL;
10112
10113   if (!gtk_widget_has_focus (GTK_WIDGET (tree_view)))
10114     return FALSE;
10115
10116   cursor_path = NULL;
10117   if (tree_view->priv->cursor)
10118     cursor_path = gtk_tree_row_reference_get_path (tree_view->priv->cursor);
10119
10120   if (cursor_path == NULL)
10121     return FALSE;
10122
10123   _gtk_tree_view_find_node (tree_view, cursor_path,
10124                             &cursor_tree, &cursor_node);
10125   if (cursor_tree == NULL)
10126     {
10127       gtk_tree_path_free (cursor_path);
10128       return FALSE;
10129     }
10130
10131   _gtk_tree_selection_internal_select_node (tree_view->priv->selection,
10132                                             cursor_node,
10133                                             cursor_tree,
10134                                             cursor_path,
10135                                             GTK_TREE_SELECT_MODE_TOGGLE,
10136                                             FALSE);
10137
10138   /* We bail out if the original (tree, node) don't exist anymore after
10139    * handling the selection-changed callback.  We do return TRUE because
10140    * the key press has been handled at this point.
10141    */
10142   _gtk_tree_view_find_node (tree_view, cursor_path, &new_tree, &new_node);
10143
10144   if (cursor_tree != new_tree || cursor_node != new_node)
10145     return FALSE;
10146
10147   gtk_tree_view_clamp_node_visible (tree_view, cursor_tree, cursor_node);
10148
10149   gtk_widget_grab_focus (GTK_WIDGET (tree_view));
10150   gtk_tree_view_queue_draw_path (tree_view, cursor_path, NULL);
10151   gtk_tree_path_free (cursor_path);
10152
10153   return TRUE;
10154 }
10155
10156 static gboolean
10157 gtk_tree_view_real_expand_collapse_cursor_row (GtkTreeView *tree_view,
10158                                                gboolean     logical,
10159                                                gboolean     expand,
10160                                                gboolean     open_all)
10161 {
10162   GtkTreePath *cursor_path = NULL;
10163   GtkRBTree *tree;
10164   GtkRBNode *node;
10165
10166   if (!gtk_widget_has_focus (GTK_WIDGET (tree_view)))
10167     return FALSE;
10168
10169   cursor_path = NULL;
10170   if (tree_view->priv->cursor)
10171     cursor_path = gtk_tree_row_reference_get_path (tree_view->priv->cursor);
10172
10173   if (cursor_path == NULL)
10174     return FALSE;
10175
10176   if (_gtk_tree_view_find_node (tree_view, cursor_path, &tree, &node))
10177     return FALSE;
10178
10179   /* Don't handle the event if we aren't an expander */
10180   if (!((node->flags & GTK_RBNODE_IS_PARENT) == GTK_RBNODE_IS_PARENT))
10181     return FALSE;
10182
10183   if (!logical
10184       && gtk_widget_get_direction (GTK_WIDGET (tree_view)) == GTK_TEXT_DIR_RTL)
10185     expand = !expand;
10186
10187   if (expand)
10188     gtk_tree_view_real_expand_row (tree_view, cursor_path, tree, node, open_all, TRUE);
10189   else
10190     gtk_tree_view_real_collapse_row (tree_view, cursor_path, tree, node, TRUE);
10191
10192   gtk_tree_path_free (cursor_path);
10193
10194   return TRUE;
10195 }
10196
10197 static gboolean
10198 gtk_tree_view_real_select_cursor_parent (GtkTreeView *tree_view)
10199 {
10200   GtkRBTree *cursor_tree = NULL;
10201   GtkRBNode *cursor_node = NULL;
10202   GtkTreePath *cursor_path = NULL;
10203   GdkModifierType state;
10204
10205   if (!gtk_widget_has_focus (GTK_WIDGET (tree_view)))
10206     goto out;
10207
10208   cursor_path = NULL;
10209   if (tree_view->priv->cursor)
10210     cursor_path = gtk_tree_row_reference_get_path (tree_view->priv->cursor);
10211
10212   if (cursor_path == NULL)
10213     goto out;
10214
10215   _gtk_tree_view_find_node (tree_view, cursor_path,
10216                             &cursor_tree, &cursor_node);
10217   if (cursor_tree == NULL)
10218     {
10219       gtk_tree_path_free (cursor_path);
10220       goto out;
10221     }
10222
10223   if (cursor_tree->parent_node)
10224     {
10225       gtk_tree_view_queue_draw_path (tree_view, cursor_path, NULL);
10226       cursor_node = cursor_tree->parent_node;
10227       cursor_tree = cursor_tree->parent_tree;
10228
10229       gtk_tree_path_up (cursor_path);
10230
10231       if (gtk_get_current_event_state (&state))
10232         {
10233           if ((state & GDK_CONTROL_MASK) == GDK_CONTROL_MASK)
10234             tree_view->priv->ctrl_pressed = TRUE;
10235         }
10236
10237       gtk_tree_view_real_set_cursor (tree_view, cursor_path, TRUE, FALSE);
10238       gtk_tree_view_clamp_node_visible (tree_view, cursor_tree, cursor_node);
10239
10240       gtk_widget_grab_focus (GTK_WIDGET (tree_view));
10241       gtk_tree_view_queue_draw_path (tree_view, cursor_path, NULL);
10242       gtk_tree_path_free (cursor_path);
10243
10244       tree_view->priv->ctrl_pressed = FALSE;
10245
10246       return TRUE;
10247     }
10248
10249  out:
10250
10251   tree_view->priv->search_entry_avoid_unhandled_binding = TRUE;
10252   return FALSE;
10253 }
10254
10255 static gboolean
10256 gtk_tree_view_search_entry_flush_timeout (GtkTreeView *tree_view)
10257 {
10258   gtk_tree_view_search_dialog_hide (tree_view->priv->search_window, tree_view);
10259   tree_view->priv->typeselect_flush_timeout = 0;
10260
10261   return FALSE;
10262 }
10263
10264 /* Cut and paste from gtkwindow.c */
10265 static void
10266 send_focus_change (GtkWidget *widget,
10267                    gboolean   in)
10268 {
10269   GdkEvent *fevent = gdk_event_new (GDK_FOCUS_CHANGE);
10270
10271   g_object_ref (widget);
10272
10273  if (in)
10274     GTK_WIDGET_SET_FLAGS (widget, GTK_HAS_FOCUS);
10275   else
10276     GTK_WIDGET_UNSET_FLAGS (widget, GTK_HAS_FOCUS);
10277
10278   fevent->focus_change.type = GDK_FOCUS_CHANGE;
10279   fevent->focus_change.window = g_object_ref (widget->window);
10280   fevent->focus_change.in = in;
10281
10282   gtk_widget_event (widget, fevent);
10283
10284   g_object_notify (G_OBJECT (widget), "has-focus");
10285
10286   g_object_unref (widget);
10287   gdk_event_free (fevent);
10288 }
10289
10290 static void
10291 gtk_tree_view_ensure_interactive_directory (GtkTreeView *tree_view)
10292 {
10293   GtkWidget *frame, *vbox, *toplevel;
10294   GdkScreen *screen;
10295
10296   if (tree_view->priv->search_custom_entry_set)
10297     return;
10298
10299   toplevel = gtk_widget_get_toplevel (GTK_WIDGET (tree_view));
10300   screen = gtk_widget_get_screen (GTK_WIDGET (tree_view));
10301
10302    if (tree_view->priv->search_window != NULL)
10303      {
10304        if (GTK_WINDOW (toplevel)->group)
10305          gtk_window_group_add_window (GTK_WINDOW (toplevel)->group,
10306                                       GTK_WINDOW (tree_view->priv->search_window));
10307        else if (GTK_WINDOW (tree_view->priv->search_window)->group)
10308          gtk_window_group_remove_window (GTK_WINDOW (tree_view->priv->search_window)->group,
10309                                          GTK_WINDOW (tree_view->priv->search_window));
10310        gtk_window_set_screen (GTK_WINDOW (tree_view->priv->search_window), screen);
10311        return;
10312      }
10313
10314   tree_view->priv->search_window = gtk_window_new (GTK_WINDOW_POPUP);
10315   gtk_window_set_screen (GTK_WINDOW (tree_view->priv->search_window), screen);
10316
10317   if (GTK_WINDOW (toplevel)->group)
10318     gtk_window_group_add_window (GTK_WINDOW (toplevel)->group,
10319                                  GTK_WINDOW (tree_view->priv->search_window));
10320
10321   gtk_window_set_type_hint (GTK_WINDOW (tree_view->priv->search_window),
10322                             GDK_WINDOW_TYPE_HINT_UTILITY);
10323   gtk_window_set_modal (GTK_WINDOW (tree_view->priv->search_window), TRUE);
10324   g_signal_connect (tree_view->priv->search_window, "delete-event",
10325                     G_CALLBACK (gtk_tree_view_search_delete_event),
10326                     tree_view);
10327   g_signal_connect (tree_view->priv->search_window, "key-press-event",
10328                     G_CALLBACK (gtk_tree_view_search_key_press_event),
10329                     tree_view);
10330   g_signal_connect (tree_view->priv->search_window, "button-press-event",
10331                     G_CALLBACK (gtk_tree_view_search_button_press_event),
10332                     tree_view);
10333   g_signal_connect (tree_view->priv->search_window, "scroll-event",
10334                     G_CALLBACK (gtk_tree_view_search_scroll_event),
10335                     tree_view);
10336
10337   frame = gtk_frame_new (NULL);
10338   gtk_frame_set_shadow_type (GTK_FRAME (frame), GTK_SHADOW_ETCHED_IN);
10339   gtk_widget_show (frame);
10340   gtk_container_add (GTK_CONTAINER (tree_view->priv->search_window), frame);
10341
10342   vbox = gtk_vbox_new (FALSE, 0);
10343   gtk_widget_show (vbox);
10344   gtk_container_add (GTK_CONTAINER (frame), vbox);
10345   gtk_container_set_border_width (GTK_CONTAINER (vbox), 3);
10346
10347   /* add entry */
10348   tree_view->priv->search_entry = gtk_entry_new ();
10349   gtk_widget_show (tree_view->priv->search_entry);
10350   g_signal_connect (tree_view->priv->search_entry, "populate-popup",
10351                     G_CALLBACK (gtk_tree_view_search_disable_popdown),
10352                     tree_view);
10353   g_signal_connect (tree_view->priv->search_entry,
10354                     "activate", G_CALLBACK (gtk_tree_view_search_activate),
10355                     tree_view);
10356   g_signal_connect (GTK_ENTRY (tree_view->priv->search_entry)->im_context,
10357                     "preedit-changed",
10358                     G_CALLBACK (gtk_tree_view_search_preedit_changed),
10359                     tree_view);
10360   gtk_container_add (GTK_CONTAINER (vbox),
10361                      tree_view->priv->search_entry);
10362
10363   gtk_widget_realize (tree_view->priv->search_entry);
10364 }
10365
10366 /* Pops up the interactive search entry.  If keybinding is TRUE then the user
10367  * started this by typing the start_interactive_search keybinding.  Otherwise, it came from
10368  */
10369 static gboolean
10370 gtk_tree_view_real_start_interactive_search (GtkTreeView *tree_view,
10371                                              gboolean     keybinding)
10372 {
10373   /* We only start interactive search if we have focus or the columns
10374    * have focus.  If one of our children have focus, we don't want to
10375    * start the search.
10376    */
10377   GList *list;
10378   gboolean found_focus = FALSE;
10379   GtkWidgetClass *entry_parent_class;
10380
10381   if (!tree_view->priv->enable_search && !keybinding)
10382     return FALSE;
10383
10384   if (tree_view->priv->search_custom_entry_set)
10385     return FALSE;
10386
10387   if (tree_view->priv->search_window != NULL &&
10388       gtk_widget_get_visible (tree_view->priv->search_window))
10389     return TRUE;
10390
10391   for (list = tree_view->priv->columns; list; list = list->next)
10392     {
10393       GtkTreeViewColumn *column;
10394
10395       column = list->data;
10396       if (! column->visible)
10397         continue;
10398
10399       if (gtk_widget_has_focus (column->button))
10400         {
10401           found_focus = TRUE;
10402           break;
10403         }
10404     }
10405
10406   if (gtk_widget_has_focus (GTK_WIDGET (tree_view)))
10407     found_focus = TRUE;
10408
10409   if (!found_focus)
10410     return FALSE;
10411
10412   if (tree_view->priv->search_column < 0)
10413     return FALSE;
10414
10415   gtk_tree_view_ensure_interactive_directory (tree_view);
10416
10417   if (keybinding)
10418     gtk_entry_set_text (GTK_ENTRY (tree_view->priv->search_entry), "");
10419
10420   /* done, show it */
10421   tree_view->priv->search_position_func (tree_view, tree_view->priv->search_window, tree_view->priv->search_position_user_data);
10422   gtk_widget_show (tree_view->priv->search_window);
10423   if (tree_view->priv->search_entry_changed_id == 0)
10424     {
10425       tree_view->priv->search_entry_changed_id =
10426         g_signal_connect (tree_view->priv->search_entry, "changed",
10427                           G_CALLBACK (gtk_tree_view_search_init),
10428                           tree_view);
10429     }
10430
10431   tree_view->priv->typeselect_flush_timeout =
10432     gdk_threads_add_timeout (GTK_TREE_VIEW_SEARCH_DIALOG_TIMEOUT,
10433                    (GSourceFunc) gtk_tree_view_search_entry_flush_timeout,
10434                    tree_view);
10435
10436   /* Grab focus will select all the text.  We don't want that to happen, so we
10437    * call the parent instance and bypass the selection change.  This is probably
10438    * really non-kosher. */
10439   entry_parent_class = g_type_class_peek_parent (GTK_ENTRY_GET_CLASS (tree_view->priv->search_entry));
10440   (entry_parent_class->grab_focus) (tree_view->priv->search_entry);
10441
10442   /* send focus-in event */
10443   send_focus_change (tree_view->priv->search_entry, TRUE);
10444
10445   /* search first matching iter */
10446   gtk_tree_view_search_init (tree_view->priv->search_entry, tree_view);
10447
10448   return TRUE;
10449 }
10450
10451 static gboolean
10452 gtk_tree_view_start_interactive_search (GtkTreeView *tree_view)
10453 {
10454   return gtk_tree_view_real_start_interactive_search (tree_view, TRUE);
10455 }
10456
10457 /* this function returns the new width of the column being resized given
10458  * the column and x position of the cursor; the x cursor position is passed
10459  * in as a pointer and automagicly corrected if it's beyond min/max limits
10460  */
10461 static gint
10462 gtk_tree_view_new_column_width (GtkTreeView *tree_view,
10463                                 gint       i,
10464                                 gint      *x)
10465 {
10466   GtkTreeViewColumn *column;
10467   gint width;
10468   gboolean rtl;
10469
10470   /* first translate the x position from widget->window
10471    * to clist->clist_window
10472    */
10473   rtl = (gtk_widget_get_direction (GTK_WIDGET (tree_view)) == GTK_TEXT_DIR_RTL);
10474   column = g_list_nth (tree_view->priv->columns, i)->data;
10475   width = rtl ? (column->button->allocation.x + column->button->allocation.width - *x) : (*x - column->button->allocation.x);
10476
10477   /* Clamp down the value */
10478   if (column->min_width == -1)
10479     width = MAX (column->button->requisition.width,
10480                  width);
10481   else
10482     width = MAX (column->min_width,
10483                  width);
10484   if (column->max_width != -1)
10485     width = MIN (width, column->max_width);
10486
10487   *x = rtl ? (column->button->allocation.x + column->button->allocation.width - width) : (column->button->allocation.x + width);
10488
10489   return width;
10490 }
10491
10492
10493 /* FIXME this adjust_allocation is a big cut-and-paste from
10494  * GtkCList, needs to be some "official" way to do this
10495  * factored out.
10496  */
10497 typedef struct
10498 {
10499   GdkWindow *window;
10500   int dx;
10501   int dy;
10502 } ScrollData;
10503
10504 /* The window to which widget->window is relative */
10505 #define ALLOCATION_WINDOW(widget)               \
10506    (!gtk_widget_get_has_window (widget) ?               \
10507     (widget)->window :                          \
10508      gdk_window_get_parent ((widget)->window))
10509
10510 static void
10511 adjust_allocation_recurse (GtkWidget *widget,
10512                            gpointer   data)
10513 {
10514   ScrollData *scroll_data = data;
10515
10516   /* Need to really size allocate instead of just poking
10517    * into widget->allocation if the widget is not realized.
10518    * FIXME someone figure out why this was.
10519    */
10520   if (!gtk_widget_get_realized (widget))
10521     {
10522       if (gtk_widget_get_visible (widget))
10523         {
10524           GdkRectangle tmp_rectangle = widget->allocation;
10525           tmp_rectangle.x += scroll_data->dx;
10526           tmp_rectangle.y += scroll_data->dy;
10527
10528           gtk_widget_size_allocate (widget, &tmp_rectangle);
10529         }
10530     }
10531   else
10532     {
10533       if (ALLOCATION_WINDOW (widget) == scroll_data->window)
10534         {
10535           widget->allocation.x += scroll_data->dx;
10536           widget->allocation.y += scroll_data->dy;
10537
10538           if (GTK_IS_CONTAINER (widget))
10539             gtk_container_forall (GTK_CONTAINER (widget),
10540                                   adjust_allocation_recurse,
10541                                   data);
10542         }
10543     }
10544 }
10545
10546 static void
10547 adjust_allocation (GtkWidget *widget,
10548                    int        dx,
10549                    int        dy)
10550 {
10551   ScrollData scroll_data;
10552
10553   if (gtk_widget_get_realized (widget))
10554     scroll_data.window = ALLOCATION_WINDOW (widget);
10555   else
10556     scroll_data.window = NULL;
10557
10558   scroll_data.dx = dx;
10559   scroll_data.dy = dy;
10560
10561   adjust_allocation_recurse (widget, &scroll_data);
10562 }
10563
10564 /* Callbacks */
10565 static void
10566 gtk_tree_view_adjustment_changed (GtkAdjustment *adjustment,
10567                                   GtkTreeView   *tree_view)
10568 {
10569   if (gtk_widget_get_realized (GTK_WIDGET (tree_view)))
10570     {
10571       gint dy;
10572
10573       gdk_window_move (tree_view->priv->bin_window,
10574                        - tree_view->priv->hadjustment->value,
10575                        TREE_VIEW_HEADER_HEIGHT (tree_view));
10576       gdk_window_move (tree_view->priv->header_window,
10577                        - tree_view->priv->hadjustment->value,
10578                        0);
10579       dy = tree_view->priv->dy - (int) tree_view->priv->vadjustment->value;
10580       if (dy)
10581         {
10582           update_prelight (tree_view,
10583                            tree_view->priv->event_last_x,
10584                            tree_view->priv->event_last_y - dy);
10585
10586           if (tree_view->priv->edited_column &&
10587               GTK_IS_WIDGET (tree_view->priv->edited_column->editable_widget))
10588             {
10589               GList *list;
10590               GtkWidget *widget;
10591               GtkTreeViewChild *child = NULL;
10592
10593               widget = GTK_WIDGET (tree_view->priv->edited_column->editable_widget);
10594               adjust_allocation (widget, 0, dy);
10595
10596               for (list = tree_view->priv->children; list; list = list->next)
10597                 {
10598                   child = (GtkTreeViewChild *)list->data;
10599                   if (child->widget == widget)
10600                     {
10601                       child->y += dy;
10602                       break;
10603                     }
10604                 }
10605             }
10606         }
10607       gdk_window_scroll (tree_view->priv->bin_window, 0, dy);
10608
10609       if (tree_view->priv->dy != (int) tree_view->priv->vadjustment->value)
10610         {
10611           /* update our dy and top_row */
10612           tree_view->priv->dy = (int) tree_view->priv->vadjustment->value;
10613
10614           if (!tree_view->priv->in_top_row_to_dy)
10615             gtk_tree_view_dy_to_top_row (tree_view);
10616         }
10617
10618       gdk_window_process_updates (tree_view->priv->header_window, TRUE);
10619       gdk_window_process_updates (tree_view->priv->bin_window, TRUE);
10620     }
10621 }
10622
10623 \f
10624
10625 /* Public methods
10626  */
10627
10628 /**
10629  * gtk_tree_view_new:
10630  *
10631  * Creates a new #GtkTreeView widget.
10632  *
10633  * Return value: A newly created #GtkTreeView widget.
10634  **/
10635 GtkWidget *
10636 gtk_tree_view_new (void)
10637 {
10638   return g_object_new (GTK_TYPE_TREE_VIEW, NULL);
10639 }
10640
10641 /**
10642  * gtk_tree_view_new_with_model:
10643  * @model: the model.
10644  *
10645  * Creates a new #GtkTreeView widget with the model initialized to @model.
10646  *
10647  * Return value: A newly created #GtkTreeView widget.
10648  **/
10649 GtkWidget *
10650 gtk_tree_view_new_with_model (GtkTreeModel *model)
10651 {
10652   return g_object_new (GTK_TYPE_TREE_VIEW, "model", model, NULL);
10653 }
10654
10655 /* Public Accessors
10656  */
10657
10658 /**
10659  * gtk_tree_view_get_model:
10660  * @tree_view: a #GtkTreeView
10661  *
10662  * Returns the model the #GtkTreeView is based on.  Returns %NULL if the
10663  * model is unset.
10664  *
10665  * Return value: A #GtkTreeModel, or %NULL if none is currently being used.
10666  **/
10667 GtkTreeModel *
10668 gtk_tree_view_get_model (GtkTreeView *tree_view)
10669 {
10670   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), NULL);
10671
10672   return tree_view->priv->model;
10673 }
10674
10675 /**
10676  * gtk_tree_view_set_model:
10677  * @tree_view: A #GtkTreeNode.
10678  * @model: (allow-none): The model.
10679  *
10680  * Sets the model for a #GtkTreeView.  If the @tree_view already has a model
10681  * set, it will remove it before setting the new model.  If @model is %NULL,
10682  * then it will unset the old model.
10683  **/
10684 void
10685 gtk_tree_view_set_model (GtkTreeView  *tree_view,
10686                          GtkTreeModel *model)
10687 {
10688   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
10689   g_return_if_fail (model == NULL || GTK_IS_TREE_MODEL (model));
10690
10691   if (model == tree_view->priv->model)
10692     return;
10693
10694   if (tree_view->priv->scroll_to_path)
10695     {
10696       gtk_tree_row_reference_free (tree_view->priv->scroll_to_path);
10697       tree_view->priv->scroll_to_path = NULL;
10698     }
10699
10700   if (tree_view->priv->model)
10701     {
10702       GList *tmplist = tree_view->priv->columns;
10703
10704       gtk_tree_view_unref_and_check_selection_tree (tree_view, tree_view->priv->tree);
10705       gtk_tree_view_stop_editing (tree_view, TRUE);
10706
10707       remove_expand_collapse_timeout (tree_view);
10708
10709       g_signal_handlers_disconnect_by_func (tree_view->priv->model,
10710                                             gtk_tree_view_row_changed,
10711                                             tree_view);
10712       g_signal_handlers_disconnect_by_func (tree_view->priv->model,
10713                                             gtk_tree_view_row_inserted,
10714                                             tree_view);
10715       g_signal_handlers_disconnect_by_func (tree_view->priv->model,
10716                                             gtk_tree_view_row_has_child_toggled,
10717                                             tree_view);
10718       g_signal_handlers_disconnect_by_func (tree_view->priv->model,
10719                                             gtk_tree_view_row_deleted,
10720                                             tree_view);
10721       g_signal_handlers_disconnect_by_func (tree_view->priv->model,
10722                                             gtk_tree_view_rows_reordered,
10723                                             tree_view);
10724
10725       for (; tmplist; tmplist = tmplist->next)
10726         _gtk_tree_view_column_unset_model (tmplist->data,
10727                                            tree_view->priv->model);
10728
10729       if (tree_view->priv->tree)
10730         gtk_tree_view_free_rbtree (tree_view);
10731
10732       gtk_tree_row_reference_free (tree_view->priv->drag_dest_row);
10733       tree_view->priv->drag_dest_row = NULL;
10734       gtk_tree_row_reference_free (tree_view->priv->cursor);
10735       tree_view->priv->cursor = NULL;
10736       gtk_tree_row_reference_free (tree_view->priv->anchor);
10737       tree_view->priv->anchor = NULL;
10738       gtk_tree_row_reference_free (tree_view->priv->top_row);
10739       tree_view->priv->top_row = NULL;
10740       gtk_tree_row_reference_free (tree_view->priv->scroll_to_path);
10741       tree_view->priv->scroll_to_path = NULL;
10742
10743       tree_view->priv->scroll_to_column = NULL;
10744
10745       g_object_unref (tree_view->priv->model);
10746
10747       tree_view->priv->search_column = -1;
10748       tree_view->priv->fixed_height_check = 0;
10749       tree_view->priv->fixed_height = -1;
10750       tree_view->priv->dy = tree_view->priv->top_row_dy = 0;
10751       tree_view->priv->last_button_x = -1;
10752       tree_view->priv->last_button_y = -1;
10753     }
10754
10755   tree_view->priv->model = model;
10756
10757   if (tree_view->priv->model)
10758     {
10759       gint i;
10760       GtkTreePath *path;
10761       GtkTreeIter iter;
10762       GtkTreeModelFlags flags;
10763
10764       if (tree_view->priv->search_column == -1)
10765         {
10766           for (i = 0; i < gtk_tree_model_get_n_columns (model); i++)
10767             {
10768               GType type = gtk_tree_model_get_column_type (model, i);
10769
10770               if (g_value_type_transformable (type, G_TYPE_STRING))
10771                 {
10772                   tree_view->priv->search_column = i;
10773                   break;
10774                 }
10775             }
10776         }
10777
10778       g_object_ref (tree_view->priv->model);
10779       g_signal_connect (tree_view->priv->model,
10780                         "row-changed",
10781                         G_CALLBACK (gtk_tree_view_row_changed),
10782                         tree_view);
10783       g_signal_connect (tree_view->priv->model,
10784                         "row-inserted",
10785                         G_CALLBACK (gtk_tree_view_row_inserted),
10786                         tree_view);
10787       g_signal_connect (tree_view->priv->model,
10788                         "row-has-child-toggled",
10789                         G_CALLBACK (gtk_tree_view_row_has_child_toggled),
10790                         tree_view);
10791       g_signal_connect (tree_view->priv->model,
10792                         "row-deleted",
10793                         G_CALLBACK (gtk_tree_view_row_deleted),
10794                         tree_view);
10795       g_signal_connect (tree_view->priv->model,
10796                         "rows-reordered",
10797                         G_CALLBACK (gtk_tree_view_rows_reordered),
10798                         tree_view);
10799
10800       flags = gtk_tree_model_get_flags (tree_view->priv->model);
10801       if ((flags & GTK_TREE_MODEL_LIST_ONLY) == GTK_TREE_MODEL_LIST_ONLY)
10802         GTK_TREE_VIEW_SET_FLAG (tree_view, GTK_TREE_VIEW_IS_LIST);
10803       else
10804         GTK_TREE_VIEW_UNSET_FLAG (tree_view, GTK_TREE_VIEW_IS_LIST);
10805
10806       path = gtk_tree_path_new_first ();
10807       if (gtk_tree_model_get_iter (tree_view->priv->model, &iter, path))
10808         {
10809           tree_view->priv->tree = _gtk_rbtree_new ();
10810           gtk_tree_view_build_tree (tree_view, tree_view->priv->tree, &iter, 1, FALSE);
10811         }
10812       gtk_tree_path_free (path);
10813
10814       /*  FIXME: do I need to do this? gtk_tree_view_create_buttons (tree_view); */
10815       install_presize_handler (tree_view);
10816     }
10817
10818   g_object_notify (G_OBJECT (tree_view), "model");
10819
10820   if (tree_view->priv->selection)
10821   _gtk_tree_selection_emit_changed (tree_view->priv->selection);
10822
10823   if (gtk_widget_get_realized (GTK_WIDGET (tree_view)))
10824     gtk_widget_queue_resize (GTK_WIDGET (tree_view));
10825 }
10826
10827 /**
10828  * gtk_tree_view_get_selection:
10829  * @tree_view: A #GtkTreeView.
10830  *
10831  * Gets the #GtkTreeSelection associated with @tree_view.
10832  *
10833  * Return value: A #GtkTreeSelection object.
10834  **/
10835 GtkTreeSelection *
10836 gtk_tree_view_get_selection (GtkTreeView *tree_view)
10837 {
10838   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), NULL);
10839
10840   return tree_view->priv->selection;
10841 }
10842
10843 /**
10844  * gtk_tree_view_get_hadjustment:
10845  * @tree_view: A #GtkTreeView
10846  *
10847  * Gets the #GtkAdjustment currently being used for the horizontal aspect.
10848  *
10849  * Return value: A #GtkAdjustment object, or %NULL if none is currently being
10850  * used.
10851  **/
10852 GtkAdjustment *
10853 gtk_tree_view_get_hadjustment (GtkTreeView *tree_view)
10854 {
10855   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), NULL);
10856
10857   if (tree_view->priv->hadjustment == NULL)
10858     gtk_tree_view_set_hadjustment (tree_view, NULL);
10859
10860   return tree_view->priv->hadjustment;
10861 }
10862
10863 /**
10864  * gtk_tree_view_set_hadjustment:
10865  * @tree_view: A #GtkTreeView
10866  * @adjustment: (allow-none): The #GtkAdjustment to set, or %NULL
10867  *
10868  * Sets the #GtkAdjustment for the current horizontal aspect.
10869  **/
10870 void
10871 gtk_tree_view_set_hadjustment (GtkTreeView   *tree_view,
10872                                GtkAdjustment *adjustment)
10873 {
10874   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
10875
10876   gtk_tree_view_set_adjustments (tree_view,
10877                                  adjustment,
10878                                  tree_view->priv->vadjustment);
10879
10880   g_object_notify (G_OBJECT (tree_view), "hadjustment");
10881 }
10882
10883 /**
10884  * gtk_tree_view_get_vadjustment:
10885  * @tree_view: A #GtkTreeView
10886  *
10887  * Gets the #GtkAdjustment currently being used for the vertical aspect.
10888  *
10889  * Return value: A #GtkAdjustment object, or %NULL if none is currently being
10890  * used.
10891  **/
10892 GtkAdjustment *
10893 gtk_tree_view_get_vadjustment (GtkTreeView *tree_view)
10894 {
10895   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), NULL);
10896
10897   if (tree_view->priv->vadjustment == NULL)
10898     gtk_tree_view_set_vadjustment (tree_view, NULL);
10899
10900   return tree_view->priv->vadjustment;
10901 }
10902
10903 /**
10904  * gtk_tree_view_set_vadjustment:
10905  * @tree_view: A #GtkTreeView
10906  * @adjustment: (allow-none): The #GtkAdjustment to set, or %NULL
10907  *
10908  * Sets the #GtkAdjustment for the current vertical aspect.
10909  **/
10910 void
10911 gtk_tree_view_set_vadjustment (GtkTreeView   *tree_view,
10912                                GtkAdjustment *adjustment)
10913 {
10914   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
10915
10916   gtk_tree_view_set_adjustments (tree_view,
10917                                  tree_view->priv->hadjustment,
10918                                  adjustment);
10919
10920   g_object_notify (G_OBJECT (tree_view), "vadjustment");
10921 }
10922
10923 /* Column and header operations */
10924
10925 /**
10926  * gtk_tree_view_get_headers_visible:
10927  * @tree_view: A #GtkTreeView.
10928  *
10929  * Returns %TRUE if the headers on the @tree_view are visible.
10930  *
10931  * Return value: Whether the headers are visible or not.
10932  **/
10933 gboolean
10934 gtk_tree_view_get_headers_visible (GtkTreeView *tree_view)
10935 {
10936   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), FALSE);
10937
10938   return GTK_TREE_VIEW_FLAG_SET (tree_view, GTK_TREE_VIEW_HEADERS_VISIBLE);
10939 }
10940
10941 /**
10942  * gtk_tree_view_set_headers_visible:
10943  * @tree_view: A #GtkTreeView.
10944  * @headers_visible: %TRUE if the headers are visible
10945  *
10946  * Sets the visibility state of the headers.
10947  **/
10948 void
10949 gtk_tree_view_set_headers_visible (GtkTreeView *tree_view,
10950                                    gboolean     headers_visible)
10951 {
10952   gint x, y;
10953   GList *list;
10954   GtkTreeViewColumn *column;
10955
10956   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
10957
10958   headers_visible = !! headers_visible;
10959
10960   if (GTK_TREE_VIEW_FLAG_SET (tree_view, GTK_TREE_VIEW_HEADERS_VISIBLE) == headers_visible)
10961     return;
10962
10963   if (headers_visible)
10964     GTK_TREE_VIEW_SET_FLAG (tree_view, GTK_TREE_VIEW_HEADERS_VISIBLE);
10965   else
10966     GTK_TREE_VIEW_UNSET_FLAG (tree_view, GTK_TREE_VIEW_HEADERS_VISIBLE);
10967
10968   if (gtk_widget_get_realized (GTK_WIDGET (tree_view)))
10969     {
10970       gdk_window_get_position (tree_view->priv->bin_window, &x, &y);
10971       if (headers_visible)
10972         {
10973           gdk_window_move_resize (tree_view->priv->bin_window, x, y  + TREE_VIEW_HEADER_HEIGHT (tree_view), tree_view->priv->width, GTK_WIDGET (tree_view)->allocation.height -  + TREE_VIEW_HEADER_HEIGHT (tree_view));
10974
10975           if (gtk_widget_get_mapped (GTK_WIDGET (tree_view)))
10976             gtk_tree_view_map_buttons (tree_view);
10977         }
10978       else
10979         {
10980           gdk_window_move_resize (tree_view->priv->bin_window, x, y, tree_view->priv->width, tree_view->priv->height);
10981
10982           for (list = tree_view->priv->columns; list; list = list->next)
10983             {
10984               column = list->data;
10985               gtk_widget_unmap (column->button);
10986             }
10987           gdk_window_hide (tree_view->priv->header_window);
10988         }
10989     }
10990
10991   tree_view->priv->vadjustment->page_size = GTK_WIDGET (tree_view)->allocation.height - TREE_VIEW_HEADER_HEIGHT (tree_view);
10992   tree_view->priv->vadjustment->page_increment = (GTK_WIDGET (tree_view)->allocation.height - TREE_VIEW_HEADER_HEIGHT (tree_view)) / 2;
10993   tree_view->priv->vadjustment->lower = 0;
10994   tree_view->priv->vadjustment->upper = tree_view->priv->height;
10995   gtk_adjustment_changed (tree_view->priv->vadjustment);
10996
10997   gtk_widget_queue_resize (GTK_WIDGET (tree_view));
10998
10999   g_object_notify (G_OBJECT (tree_view), "headers-visible");
11000 }
11001
11002 /**
11003  * gtk_tree_view_columns_autosize:
11004  * @tree_view: A #GtkTreeView.
11005  *
11006  * Resizes all columns to their optimal width. Only works after the
11007  * treeview has been realized.
11008  **/
11009 void
11010 gtk_tree_view_columns_autosize (GtkTreeView *tree_view)
11011 {
11012   gboolean dirty = FALSE;
11013   GList *list;
11014   GtkTreeViewColumn *column;
11015
11016   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
11017
11018   for (list = tree_view->priv->columns; list; list = list->next)
11019     {
11020       column = list->data;
11021       if (column->column_type == GTK_TREE_VIEW_COLUMN_AUTOSIZE)
11022         continue;
11023       _gtk_tree_view_column_cell_set_dirty (column, TRUE);
11024       dirty = TRUE;
11025     }
11026
11027   if (dirty)
11028     gtk_widget_queue_resize (GTK_WIDGET (tree_view));
11029 }
11030
11031 /**
11032  * gtk_tree_view_set_headers_clickable:
11033  * @tree_view: A #GtkTreeView.
11034  * @setting: %TRUE if the columns are clickable.
11035  *
11036  * Allow the column title buttons to be clicked.
11037  **/
11038 void
11039 gtk_tree_view_set_headers_clickable (GtkTreeView *tree_view,
11040                                      gboolean   setting)
11041 {
11042   GList *list;
11043
11044   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
11045
11046   for (list = tree_view->priv->columns; list; list = list->next)
11047     gtk_tree_view_column_set_clickable (GTK_TREE_VIEW_COLUMN (list->data), setting);
11048
11049   g_object_notify (G_OBJECT (tree_view), "headers-clickable");
11050 }
11051
11052
11053 /**
11054  * gtk_tree_view_get_headers_clickable:
11055  * @tree_view: A #GtkTreeView.
11056  *
11057  * Returns whether all header columns are clickable.
11058  *
11059  * Return value: %TRUE if all header columns are clickable, otherwise %FALSE
11060  *
11061  * Since: 2.10
11062  **/
11063 gboolean
11064 gtk_tree_view_get_headers_clickable (GtkTreeView *tree_view)
11065 {
11066   GList *list;
11067
11068   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), FALSE);
11069
11070   for (list = tree_view->priv->columns; list; list = list->next)
11071     if (!GTK_TREE_VIEW_COLUMN (list->data)->clickable)
11072       return FALSE;
11073
11074   return TRUE;
11075 }
11076
11077 /**
11078  * gtk_tree_view_set_rules_hint
11079  * @tree_view: a #GtkTreeView
11080  * @setting: %TRUE if the tree requires reading across rows
11081  *
11082  * This function tells GTK+ that the user interface for your
11083  * application requires users to read across tree rows and associate
11084  * cells with one another. By default, GTK+ will then render the tree
11085  * with alternating row colors. Do <emphasis>not</emphasis> use it
11086  * just because you prefer the appearance of the ruled tree; that's a
11087  * question for the theme. Some themes will draw tree rows in
11088  * alternating colors even when rules are turned off, and users who
11089  * prefer that appearance all the time can choose those themes. You
11090  * should call this function only as a <emphasis>semantic</emphasis>
11091  * hint to the theme engine that your tree makes alternating colors
11092  * useful from a functional standpoint (since it has lots of columns,
11093  * generally).
11094  *
11095  **/
11096 void
11097 gtk_tree_view_set_rules_hint (GtkTreeView  *tree_view,
11098                               gboolean      setting)
11099 {
11100   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
11101
11102   setting = setting != FALSE;
11103
11104   if (tree_view->priv->has_rules != setting)
11105     {
11106       tree_view->priv->has_rules = setting;
11107       gtk_widget_queue_draw (GTK_WIDGET (tree_view));
11108     }
11109
11110   g_object_notify (G_OBJECT (tree_view), "rules-hint");
11111 }
11112
11113 /**
11114  * gtk_tree_view_get_rules_hint
11115  * @tree_view: a #GtkTreeView
11116  *
11117  * Gets the setting set by gtk_tree_view_set_rules_hint().
11118  *
11119  * Return value: %TRUE if rules are useful for the user of this tree
11120  **/
11121 gboolean
11122 gtk_tree_view_get_rules_hint (GtkTreeView  *tree_view)
11123 {
11124   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), FALSE);
11125
11126   return tree_view->priv->has_rules;
11127 }
11128
11129 /* Public Column functions
11130  */
11131
11132 /**
11133  * gtk_tree_view_append_column:
11134  * @tree_view: A #GtkTreeView.
11135  * @column: The #GtkTreeViewColumn to add.
11136  *
11137  * Appends @column to the list of columns. If @tree_view has "fixed_height"
11138  * mode enabled, then @column must have its "sizing" property set to be
11139  * GTK_TREE_VIEW_COLUMN_FIXED.
11140  *
11141  * Return value: The number of columns in @tree_view after appending.
11142  **/
11143 gint
11144 gtk_tree_view_append_column (GtkTreeView       *tree_view,
11145                              GtkTreeViewColumn *column)
11146 {
11147   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), -1);
11148   g_return_val_if_fail (GTK_IS_TREE_VIEW_COLUMN (column), -1);
11149   g_return_val_if_fail (column->tree_view == NULL, -1);
11150
11151   return gtk_tree_view_insert_column (tree_view, column, -1);
11152 }
11153
11154
11155 /**
11156  * gtk_tree_view_remove_column:
11157  * @tree_view: A #GtkTreeView.
11158  * @column: The #GtkTreeViewColumn to remove.
11159  *
11160  * Removes @column from @tree_view.
11161  *
11162  * Return value: The number of columns in @tree_view after removing.
11163  **/
11164 gint
11165 gtk_tree_view_remove_column (GtkTreeView       *tree_view,
11166                              GtkTreeViewColumn *column)
11167 {
11168   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), -1);
11169   g_return_val_if_fail (GTK_IS_TREE_VIEW_COLUMN (column), -1);
11170   g_return_val_if_fail (column->tree_view == GTK_WIDGET (tree_view), -1);
11171
11172   if (tree_view->priv->focus_column == column)
11173     tree_view->priv->focus_column = NULL;
11174
11175   if (tree_view->priv->edited_column == column)
11176     {
11177       gtk_tree_view_stop_editing (tree_view, TRUE);
11178
11179       /* no need to, but just to be sure ... */
11180       tree_view->priv->edited_column = NULL;
11181     }
11182
11183   if (tree_view->priv->expander_column == column)
11184     tree_view->priv->expander_column = NULL;
11185
11186   g_signal_handlers_disconnect_by_func (column,
11187                                         G_CALLBACK (column_sizing_notify),
11188                                         tree_view);
11189
11190   _gtk_tree_view_column_unset_tree_view (column);
11191
11192   tree_view->priv->columns = g_list_remove (tree_view->priv->columns, column);
11193   tree_view->priv->n_columns--;
11194
11195   if (gtk_widget_get_realized (GTK_WIDGET (tree_view)))
11196     {
11197       GList *list;
11198
11199       _gtk_tree_view_column_unrealize_button (column);
11200       for (list = tree_view->priv->columns; list; list = list->next)
11201         {
11202           GtkTreeViewColumn *tmp_column;
11203
11204           tmp_column = GTK_TREE_VIEW_COLUMN (list->data);
11205           if (tmp_column->visible)
11206             _gtk_tree_view_column_cell_set_dirty (tmp_column, TRUE);
11207         }
11208
11209       if (tree_view->priv->n_columns == 0 &&
11210           gtk_tree_view_get_headers_visible (tree_view))
11211         gdk_window_hide (tree_view->priv->header_window);
11212
11213       gtk_widget_queue_resize (GTK_WIDGET (tree_view));
11214     }
11215
11216   g_object_unref (column);
11217   g_signal_emit (tree_view, tree_view_signals[COLUMNS_CHANGED], 0);
11218
11219   return tree_view->priv->n_columns;
11220 }
11221
11222 /**
11223  * gtk_tree_view_insert_column:
11224  * @tree_view: A #GtkTreeView.
11225  * @column: The #GtkTreeViewColumn to be inserted.
11226  * @position: The position to insert @column in.
11227  *
11228  * This inserts the @column into the @tree_view at @position.  If @position is
11229  * -1, then the column is inserted at the end. If @tree_view has
11230  * "fixed_height" mode enabled, then @column must have its "sizing" property
11231  * set to be GTK_TREE_VIEW_COLUMN_FIXED.
11232  *
11233  * Return value: The number of columns in @tree_view after insertion.
11234  **/
11235 gint
11236 gtk_tree_view_insert_column (GtkTreeView       *tree_view,
11237                              GtkTreeViewColumn *column,
11238                              gint               position)
11239 {
11240   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), -1);
11241   g_return_val_if_fail (GTK_IS_TREE_VIEW_COLUMN (column), -1);
11242   g_return_val_if_fail (column->tree_view == NULL, -1);
11243
11244   if (tree_view->priv->fixed_height_mode)
11245     g_return_val_if_fail (gtk_tree_view_column_get_sizing (column)
11246                           == GTK_TREE_VIEW_COLUMN_FIXED, -1);
11247
11248   g_object_ref_sink (column);
11249
11250   if (tree_view->priv->n_columns == 0 &&
11251       gtk_widget_get_realized (GTK_WIDGET (tree_view)) &&
11252       gtk_tree_view_get_headers_visible (tree_view))
11253     {
11254       gdk_window_show (tree_view->priv->header_window);
11255     }
11256
11257   g_signal_connect (column, "notify::sizing",
11258                     G_CALLBACK (column_sizing_notify), tree_view);
11259
11260   tree_view->priv->columns = g_list_insert (tree_view->priv->columns,
11261                                             column, position);
11262   tree_view->priv->n_columns++;
11263
11264   _gtk_tree_view_column_set_tree_view (column, tree_view);
11265
11266   if (gtk_widget_get_realized (GTK_WIDGET (tree_view)))
11267     {
11268       GList *list;
11269
11270       _gtk_tree_view_column_realize_button (column);
11271
11272       for (list = tree_view->priv->columns; list; list = list->next)
11273         {
11274           column = GTK_TREE_VIEW_COLUMN (list->data);
11275           if (column->visible)
11276             _gtk_tree_view_column_cell_set_dirty (column, TRUE);
11277         }
11278       gtk_widget_queue_resize (GTK_WIDGET (tree_view));
11279     }
11280
11281   g_signal_emit (tree_view, tree_view_signals[COLUMNS_CHANGED], 0);
11282
11283   return tree_view->priv->n_columns;
11284 }
11285
11286 /**
11287  * gtk_tree_view_insert_column_with_attributes:
11288  * @tree_view: A #GtkTreeView
11289  * @position: The position to insert the new column in.
11290  * @title: The title to set the header to.
11291  * @cell: The #GtkCellRenderer.
11292  * @Varargs: A %NULL-terminated list of attributes.
11293  *
11294  * Creates a new #GtkTreeViewColumn and inserts it into the @tree_view at
11295  * @position.  If @position is -1, then the newly created column is inserted at
11296  * the end.  The column is initialized with the attributes given. If @tree_view
11297  * has "fixed_height" mode enabled, then the new column will have its sizing
11298  * property set to be GTK_TREE_VIEW_COLUMN_FIXED.
11299  *
11300  * Return value: The number of columns in @tree_view after insertion.
11301  **/
11302 gint
11303 gtk_tree_view_insert_column_with_attributes (GtkTreeView     *tree_view,
11304                                              gint             position,
11305                                              const gchar     *title,
11306                                              GtkCellRenderer *cell,
11307                                              ...)
11308 {
11309   GtkTreeViewColumn *column;
11310   gchar *attribute;
11311   va_list args;
11312   gint column_id;
11313
11314   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), -1);
11315
11316   column = gtk_tree_view_column_new ();
11317   if (tree_view->priv->fixed_height_mode)
11318     gtk_tree_view_column_set_sizing (column, GTK_TREE_VIEW_COLUMN_FIXED);
11319
11320   gtk_tree_view_column_set_title (column, title);
11321   gtk_tree_view_column_pack_start (column, cell, TRUE);
11322
11323   va_start (args, cell);
11324
11325   attribute = va_arg (args, gchar *);
11326
11327   while (attribute != NULL)
11328     {
11329       column_id = va_arg (args, gint);
11330       gtk_tree_view_column_add_attribute (column, cell, attribute, column_id);
11331       attribute = va_arg (args, gchar *);
11332     }
11333
11334   va_end (args);
11335
11336   gtk_tree_view_insert_column (tree_view, column, position);
11337
11338   return tree_view->priv->n_columns;
11339 }
11340
11341 /**
11342  * gtk_tree_view_insert_column_with_data_func:
11343  * @tree_view: a #GtkTreeView
11344  * @position: Position to insert, -1 for append
11345  * @title: column title
11346  * @cell: cell renderer for column
11347  * @func: function to set attributes of cell renderer
11348  * @data: data for @func
11349  * @dnotify: destroy notifier for @data
11350  *
11351  * Convenience function that inserts a new column into the #GtkTreeView
11352  * with the given cell renderer and a #GtkCellDataFunc to set cell renderer
11353  * attributes (normally using data from the model). See also
11354  * gtk_tree_view_column_set_cell_data_func(), gtk_tree_view_column_pack_start().
11355  * If @tree_view has "fixed_height" mode enabled, then the new column will have its
11356  * "sizing" property set to be GTK_TREE_VIEW_COLUMN_FIXED.
11357  *
11358  * Return value: number of columns in the tree view post-insert
11359  **/
11360 gint
11361 gtk_tree_view_insert_column_with_data_func  (GtkTreeView               *tree_view,
11362                                              gint                       position,
11363                                              const gchar               *title,
11364                                              GtkCellRenderer           *cell,
11365                                              GtkTreeCellDataFunc        func,
11366                                              gpointer                   data,
11367                                              GDestroyNotify             dnotify)
11368 {
11369   GtkTreeViewColumn *column;
11370
11371   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), -1);
11372
11373   column = gtk_tree_view_column_new ();
11374   if (tree_view->priv->fixed_height_mode)
11375     gtk_tree_view_column_set_sizing (column, GTK_TREE_VIEW_COLUMN_FIXED);
11376
11377   gtk_tree_view_column_set_title (column, title);
11378   gtk_tree_view_column_pack_start (column, cell, TRUE);
11379   gtk_tree_view_column_set_cell_data_func (column, cell, func, data, dnotify);
11380
11381   gtk_tree_view_insert_column (tree_view, column, position);
11382
11383   return tree_view->priv->n_columns;
11384 }
11385
11386 /**
11387  * gtk_tree_view_get_column:
11388  * @tree_view: A #GtkTreeView.
11389  * @n: The position of the column, counting from 0.
11390  *
11391  * Gets the #GtkTreeViewColumn at the given position in the #tree_view.
11392  *
11393  * Return value: The #GtkTreeViewColumn, or %NULL if the position is outside the
11394  * range of columns.
11395  **/
11396 GtkTreeViewColumn *
11397 gtk_tree_view_get_column (GtkTreeView *tree_view,
11398                           gint         n)
11399 {
11400   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), NULL);
11401
11402   if (n < 0 || n >= tree_view->priv->n_columns)
11403     return NULL;
11404
11405   if (tree_view->priv->columns == NULL)
11406     return NULL;
11407
11408   return GTK_TREE_VIEW_COLUMN (g_list_nth (tree_view->priv->columns, n)->data);
11409 }
11410
11411 /**
11412  * gtk_tree_view_get_columns:
11413  * @tree_view: A #GtkTreeView
11414  *
11415  * Returns a #GList of all the #GtkTreeViewColumn s currently in @tree_view.
11416  * The returned list must be freed with g_list_free ().
11417  *
11418  * Return value: (element-type GtkTreeViewColumn) (transfer container): A list of #GtkTreeViewColumn s
11419  **/
11420 GList *
11421 gtk_tree_view_get_columns (GtkTreeView *tree_view)
11422 {
11423   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), NULL);
11424
11425   return g_list_copy (tree_view->priv->columns);
11426 }
11427
11428 /**
11429  * gtk_tree_view_move_column_after:
11430  * @tree_view: A #GtkTreeView
11431  * @column: The #GtkTreeViewColumn to be moved.
11432  * @base_column: (allow-none): The #GtkTreeViewColumn to be moved relative to, or %NULL.
11433  *
11434  * Moves @column to be after to @base_column.  If @base_column is %NULL, then
11435  * @column is placed in the first position.
11436  **/
11437 void
11438 gtk_tree_view_move_column_after (GtkTreeView       *tree_view,
11439                                  GtkTreeViewColumn *column,
11440                                  GtkTreeViewColumn *base_column)
11441 {
11442   GList *column_list_el, *base_el = NULL;
11443
11444   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
11445
11446   column_list_el = g_list_find (tree_view->priv->columns, column);
11447   g_return_if_fail (column_list_el != NULL);
11448
11449   if (base_column)
11450     {
11451       base_el = g_list_find (tree_view->priv->columns, base_column);
11452       g_return_if_fail (base_el != NULL);
11453     }
11454
11455   if (column_list_el->prev == base_el)
11456     return;
11457
11458   tree_view->priv->columns = g_list_remove_link (tree_view->priv->columns, column_list_el);
11459   if (base_el == NULL)
11460     {
11461       column_list_el->prev = NULL;
11462       column_list_el->next = tree_view->priv->columns;
11463       if (column_list_el->next)
11464         column_list_el->next->prev = column_list_el;
11465       tree_view->priv->columns = column_list_el;
11466     }
11467   else
11468     {
11469       column_list_el->prev = base_el;
11470       column_list_el->next = base_el->next;
11471       if (column_list_el->next)
11472         column_list_el->next->prev = column_list_el;
11473       base_el->next = column_list_el;
11474     }
11475
11476   if (gtk_widget_get_realized (GTK_WIDGET (tree_view)))
11477     {
11478       gtk_widget_queue_resize (GTK_WIDGET (tree_view));
11479       gtk_tree_view_size_allocate_columns (GTK_WIDGET (tree_view), NULL);
11480     }
11481
11482   g_signal_emit (tree_view, tree_view_signals[COLUMNS_CHANGED], 0);
11483 }
11484
11485 /**
11486  * gtk_tree_view_set_expander_column:
11487  * @tree_view: A #GtkTreeView
11488  * @column: %NULL, or the column to draw the expander arrow at.
11489  *
11490  * Sets the column to draw the expander arrow at. It must be in @tree_view.
11491  * If @column is %NULL, then the expander arrow is always at the first
11492  * visible column.
11493  *
11494  * If you do not want expander arrow to appear in your tree, set the
11495  * expander column to a hidden column.
11496  **/
11497 void
11498 gtk_tree_view_set_expander_column (GtkTreeView       *tree_view,
11499                                    GtkTreeViewColumn *column)
11500 {
11501   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
11502   g_return_if_fail (column == NULL || GTK_IS_TREE_VIEW_COLUMN (column));
11503
11504   if (tree_view->priv->expander_column != column)
11505     {
11506       GList *list;
11507
11508       if (column)
11509         {
11510           /* Confirm that column is in tree_view */
11511           for (list = tree_view->priv->columns; list; list = list->next)
11512             if (list->data == column)
11513               break;
11514           g_return_if_fail (list != NULL);
11515         }
11516
11517       tree_view->priv->expander_column = column;
11518       g_object_notify (G_OBJECT (tree_view), "expander-column");
11519     }
11520 }
11521
11522 /**
11523  * gtk_tree_view_get_expander_column:
11524  * @tree_view: A #GtkTreeView
11525  *
11526  * Returns the column that is the current expander column.  This
11527  * column has the expander arrow drawn next to it.
11528  *
11529  * Return value: The expander column.
11530  **/
11531 GtkTreeViewColumn *
11532 gtk_tree_view_get_expander_column (GtkTreeView *tree_view)
11533 {
11534   GList *list;
11535
11536   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), NULL);
11537
11538   for (list = tree_view->priv->columns; list; list = list->next)
11539     if (gtk_tree_view_is_expander_column (tree_view, GTK_TREE_VIEW_COLUMN (list->data)))
11540       return (GtkTreeViewColumn *) list->data;
11541   return NULL;
11542 }
11543
11544
11545 /**
11546  * gtk_tree_view_set_column_drag_function:
11547  * @tree_view: A #GtkTreeView.
11548  * @func: (allow-none): A function to determine which columns are reorderable, or %NULL.
11549  * @user_data: (allow-none): User data to be passed to @func, or %NULL
11550  * @destroy: (allow-none): Destroy notifier for @user_data, or %NULL
11551  *
11552  * Sets a user function for determining where a column may be dropped when
11553  * dragged.  This function is called on every column pair in turn at the
11554  * beginning of a column drag to determine where a drop can take place.  The
11555  * arguments passed to @func are: the @tree_view, the #GtkTreeViewColumn being
11556  * dragged, the two #GtkTreeViewColumn s determining the drop spot, and
11557  * @user_data.  If either of the #GtkTreeViewColumn arguments for the drop spot
11558  * are %NULL, then they indicate an edge.  If @func is set to be %NULL, then
11559  * @tree_view reverts to the default behavior of allowing all columns to be
11560  * dropped everywhere.
11561  **/
11562 void
11563 gtk_tree_view_set_column_drag_function (GtkTreeView               *tree_view,
11564                                         GtkTreeViewColumnDropFunc  func,
11565                                         gpointer                   user_data,
11566                                         GDestroyNotify             destroy)
11567 {
11568   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
11569
11570   if (tree_view->priv->column_drop_func_data_destroy)
11571     tree_view->priv->column_drop_func_data_destroy (tree_view->priv->column_drop_func_data);
11572
11573   tree_view->priv->column_drop_func = func;
11574   tree_view->priv->column_drop_func_data = user_data;
11575   tree_view->priv->column_drop_func_data_destroy = destroy;
11576 }
11577
11578 /**
11579  * gtk_tree_view_scroll_to_point:
11580  * @tree_view: a #GtkTreeView
11581  * @tree_x: X coordinate of new top-left pixel of visible area, or -1
11582  * @tree_y: Y coordinate of new top-left pixel of visible area, or -1
11583  *
11584  * Scrolls the tree view such that the top-left corner of the visible
11585  * area is @tree_x, @tree_y, where @tree_x and @tree_y are specified
11586  * in tree coordinates.  The @tree_view must be realized before
11587  * this function is called.  If it isn't, you probably want to be
11588  * using gtk_tree_view_scroll_to_cell().
11589  *
11590  * If either @tree_x or @tree_y are -1, then that direction isn't scrolled.
11591  **/
11592 void
11593 gtk_tree_view_scroll_to_point (GtkTreeView *tree_view,
11594                                gint         tree_x,
11595                                gint         tree_y)
11596 {
11597   GtkAdjustment *hadj;
11598   GtkAdjustment *vadj;
11599
11600   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
11601   g_return_if_fail (gtk_widget_get_realized (GTK_WIDGET (tree_view)));
11602
11603   hadj = tree_view->priv->hadjustment;
11604   vadj = tree_view->priv->vadjustment;
11605
11606   if (tree_x != -1)
11607     gtk_adjustment_set_value (hadj, CLAMP (tree_x, hadj->lower, hadj->upper - hadj->page_size));
11608   if (tree_y != -1)
11609     gtk_adjustment_set_value (vadj, CLAMP (tree_y, vadj->lower, vadj->upper - vadj->page_size));
11610 }
11611
11612 /**
11613  * gtk_tree_view_scroll_to_cell:
11614  * @tree_view: A #GtkTreeView.
11615  * @path: (allow-none): The path of the row to move to, or %NULL.
11616  * @column: (allow-none): The #GtkTreeViewColumn to move horizontally to, or %NULL.
11617  * @use_align: whether to use alignment arguments, or %FALSE.
11618  * @row_align: The vertical alignment of the row specified by @path.
11619  * @col_align: The horizontal alignment of the column specified by @column.
11620  *
11621  * Moves the alignments of @tree_view to the position specified by @column and
11622  * @path.  If @column is %NULL, then no horizontal scrolling occurs.  Likewise,
11623  * if @path is %NULL no vertical scrolling occurs.  At a minimum, one of @column
11624  * or @path need to be non-%NULL.  @row_align determines where the row is
11625  * placed, and @col_align determines where @column is placed.  Both are expected
11626  * to be between 0.0 and 1.0. 0.0 means left/top alignment, 1.0 means
11627  * right/bottom alignment, 0.5 means center.
11628  *
11629  * If @use_align is %FALSE, then the alignment arguments are ignored, and the
11630  * tree does the minimum amount of work to scroll the cell onto the screen.
11631  * This means that the cell will be scrolled to the edge closest to its current
11632  * position.  If the cell is currently visible on the screen, nothing is done.
11633  *
11634  * This function only works if the model is set, and @path is a valid row on the
11635  * model.  If the model changes before the @tree_view is realized, the centered
11636  * path will be modified to reflect this change.
11637  **/
11638 void
11639 gtk_tree_view_scroll_to_cell (GtkTreeView       *tree_view,
11640                               GtkTreePath       *path,
11641                               GtkTreeViewColumn *column,
11642                               gboolean           use_align,
11643                               gfloat             row_align,
11644                               gfloat             col_align)
11645 {
11646   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
11647   g_return_if_fail (tree_view->priv->model != NULL);
11648   g_return_if_fail (tree_view->priv->tree != NULL);
11649   g_return_if_fail (row_align >= 0.0 && row_align <= 1.0);
11650   g_return_if_fail (col_align >= 0.0 && col_align <= 1.0);
11651   g_return_if_fail (path != NULL || column != NULL);
11652
11653 #if 0
11654   g_print ("gtk_tree_view_scroll_to_cell:\npath: %s\ncolumn: %s\nuse_align: %d\nrow_align: %f\ncol_align: %f\n",
11655            gtk_tree_path_to_string (path), column?"non-null":"null", use_align, row_align, col_align);
11656 #endif
11657   row_align = CLAMP (row_align, 0.0, 1.0);
11658   col_align = CLAMP (col_align, 0.0, 1.0);
11659
11660
11661   /* Note: Despite the benefits that come from having one code path for the
11662    * scrolling code, we short-circuit validate_visible_area's immplementation as
11663    * it is much slower than just going to the point.
11664    */
11665   if (!gtk_widget_get_visible (GTK_WIDGET (tree_view)) ||
11666       !gtk_widget_get_realized (GTK_WIDGET (tree_view)) ||
11667       GTK_WIDGET_ALLOC_NEEDED (tree_view) ||
11668       GTK_RBNODE_FLAG_SET (tree_view->priv->tree->root, GTK_RBNODE_DESCENDANTS_INVALID))
11669     {
11670       if (tree_view->priv->scroll_to_path)
11671         gtk_tree_row_reference_free (tree_view->priv->scroll_to_path);
11672
11673       tree_view->priv->scroll_to_path = NULL;
11674       tree_view->priv->scroll_to_column = NULL;
11675
11676       if (path)
11677         tree_view->priv->scroll_to_path = gtk_tree_row_reference_new_proxy (G_OBJECT (tree_view), tree_view->priv->model, path);
11678       if (column)
11679         tree_view->priv->scroll_to_column = column;
11680       tree_view->priv->scroll_to_use_align = use_align;
11681       tree_view->priv->scroll_to_row_align = row_align;
11682       tree_view->priv->scroll_to_col_align = col_align;
11683
11684       install_presize_handler (tree_view);
11685     }
11686   else
11687     {
11688       GdkRectangle cell_rect;
11689       GdkRectangle vis_rect;
11690       gint dest_x, dest_y;
11691
11692       gtk_tree_view_get_background_area (tree_view, path, column, &cell_rect);
11693       gtk_tree_view_get_visible_rect (tree_view, &vis_rect);
11694
11695       cell_rect.y = TREE_WINDOW_Y_TO_RBTREE_Y (tree_view, cell_rect.y);
11696
11697       dest_x = vis_rect.x;
11698       dest_y = vis_rect.y;
11699
11700       if (column)
11701         {
11702           if (use_align)
11703             {
11704               dest_x = cell_rect.x - ((vis_rect.width - cell_rect.width) * col_align);
11705             }
11706           else
11707             {
11708               if (cell_rect.x < vis_rect.x)
11709                 dest_x = cell_rect.x;
11710               if (cell_rect.x + cell_rect.width > vis_rect.x + vis_rect.width)
11711                 dest_x = cell_rect.x + cell_rect.width - vis_rect.width;
11712             }
11713         }
11714
11715       if (path)
11716         {
11717           if (use_align)
11718             {
11719               dest_y = cell_rect.y - ((vis_rect.height - cell_rect.height) * row_align);
11720               dest_y = MAX (dest_y, 0);
11721             }
11722           else
11723             {
11724               if (cell_rect.y < vis_rect.y)
11725                 dest_y = cell_rect.y;
11726               if (cell_rect.y + cell_rect.height > vis_rect.y + vis_rect.height)
11727                 dest_y = cell_rect.y + cell_rect.height - vis_rect.height;
11728             }
11729         }
11730
11731       gtk_tree_view_scroll_to_point (tree_view, dest_x, dest_y);
11732     }
11733 }
11734
11735 /**
11736  * gtk_tree_view_row_activated:
11737  * @tree_view: A #GtkTreeView
11738  * @path: The #GtkTreePath to be activated.
11739  * @column: The #GtkTreeViewColumn to be activated.
11740  *
11741  * Activates the cell determined by @path and @column.
11742  **/
11743 void
11744 gtk_tree_view_row_activated (GtkTreeView       *tree_view,
11745                              GtkTreePath       *path,
11746                              GtkTreeViewColumn *column)
11747 {
11748   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
11749
11750   g_signal_emit (tree_view, tree_view_signals[ROW_ACTIVATED], 0, path, column);
11751 }
11752
11753
11754 static void
11755 gtk_tree_view_expand_all_emission_helper (GtkRBTree *tree,
11756                                           GtkRBNode *node,
11757                                           gpointer   data)
11758 {
11759   GtkTreeView *tree_view = data;
11760
11761   if ((node->flags & GTK_RBNODE_IS_PARENT) == GTK_RBNODE_IS_PARENT &&
11762       node->children)
11763     {
11764       GtkTreePath *path;
11765       GtkTreeIter iter;
11766
11767       path = _gtk_tree_view_find_path (tree_view, tree, node);
11768       gtk_tree_model_get_iter (tree_view->priv->model, &iter, path);
11769
11770       g_signal_emit (tree_view, tree_view_signals[ROW_EXPANDED], 0, &iter, path);
11771
11772       gtk_tree_path_free (path);
11773     }
11774
11775   if (node->children)
11776     _gtk_rbtree_traverse (node->children,
11777                           node->children->root,
11778                           G_PRE_ORDER,
11779                           gtk_tree_view_expand_all_emission_helper,
11780                           tree_view);
11781 }
11782
11783 /**
11784  * gtk_tree_view_expand_all:
11785  * @tree_view: A #GtkTreeView.
11786  *
11787  * Recursively expands all nodes in the @tree_view.
11788  **/
11789 void
11790 gtk_tree_view_expand_all (GtkTreeView *tree_view)
11791 {
11792   GtkTreePath *path;
11793   GtkRBTree *tree;
11794   GtkRBNode *node;
11795
11796   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
11797
11798   if (tree_view->priv->tree == NULL)
11799     return;
11800
11801   path = gtk_tree_path_new_first ();
11802   _gtk_tree_view_find_node (tree_view, path, &tree, &node);
11803
11804   while (node)
11805     {
11806       gtk_tree_view_real_expand_row (tree_view, path, tree, node, TRUE, FALSE);
11807       node = _gtk_rbtree_next (tree, node);
11808       gtk_tree_path_next (path);
11809   }
11810
11811   gtk_tree_path_free (path);
11812 }
11813
11814 /* Timeout to animate the expander during expands and collapses */
11815 static gboolean
11816 expand_collapse_timeout (gpointer data)
11817 {
11818   return do_expand_collapse (data);
11819 }
11820
11821 static void
11822 add_expand_collapse_timeout (GtkTreeView *tree_view,
11823                              GtkRBTree   *tree,
11824                              GtkRBNode   *node,
11825                              gboolean     expand)
11826 {
11827   if (tree_view->priv->expand_collapse_timeout != 0)
11828     return;
11829
11830   tree_view->priv->expand_collapse_timeout =
11831       gdk_threads_add_timeout (50, expand_collapse_timeout, tree_view);
11832   tree_view->priv->expanded_collapsed_tree = tree;
11833   tree_view->priv->expanded_collapsed_node = node;
11834
11835   if (expand)
11836     GTK_RBNODE_SET_FLAG (node, GTK_RBNODE_IS_SEMI_COLLAPSED);
11837   else
11838     GTK_RBNODE_SET_FLAG (node, GTK_RBNODE_IS_SEMI_EXPANDED);
11839 }
11840
11841 static void
11842 remove_expand_collapse_timeout (GtkTreeView *tree_view)
11843 {
11844   if (tree_view->priv->expand_collapse_timeout)
11845     {
11846       g_source_remove (tree_view->priv->expand_collapse_timeout);
11847       tree_view->priv->expand_collapse_timeout = 0;
11848     }
11849
11850   if (tree_view->priv->expanded_collapsed_node != NULL)
11851     {
11852       GTK_RBNODE_UNSET_FLAG (tree_view->priv->expanded_collapsed_node, GTK_RBNODE_IS_SEMI_EXPANDED);
11853       GTK_RBNODE_UNSET_FLAG (tree_view->priv->expanded_collapsed_node, GTK_RBNODE_IS_SEMI_COLLAPSED);
11854
11855       tree_view->priv->expanded_collapsed_node = NULL;
11856     }
11857 }
11858
11859 static void
11860 cancel_arrow_animation (GtkTreeView *tree_view)
11861 {
11862   if (tree_view->priv->expand_collapse_timeout)
11863     {
11864       while (do_expand_collapse (tree_view));
11865
11866       remove_expand_collapse_timeout (tree_view);
11867     }
11868 }
11869
11870 static gboolean
11871 do_expand_collapse (GtkTreeView *tree_view)
11872 {
11873   GtkRBNode *node;
11874   GtkRBTree *tree;
11875   gboolean expanding;
11876   gboolean redraw;
11877
11878   redraw = FALSE;
11879   expanding = TRUE;
11880
11881   node = tree_view->priv->expanded_collapsed_node;
11882   tree = tree_view->priv->expanded_collapsed_tree;
11883
11884   if (node->children == NULL)
11885     expanding = FALSE;
11886
11887   if (expanding)
11888     {
11889       if (GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_SEMI_COLLAPSED))
11890         {
11891           GTK_RBNODE_UNSET_FLAG (node, GTK_RBNODE_IS_SEMI_COLLAPSED);
11892           GTK_RBNODE_SET_FLAG (node, GTK_RBNODE_IS_SEMI_EXPANDED);
11893
11894           redraw = TRUE;
11895
11896         }
11897       else if (GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_SEMI_EXPANDED))
11898         {
11899           GTK_RBNODE_UNSET_FLAG (node, GTK_RBNODE_IS_SEMI_EXPANDED);
11900
11901           redraw = TRUE;
11902         }
11903     }
11904   else
11905     {
11906       if (GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_SEMI_EXPANDED))
11907         {
11908           GTK_RBNODE_UNSET_FLAG (node, GTK_RBNODE_IS_SEMI_EXPANDED);
11909           GTK_RBNODE_SET_FLAG (node, GTK_RBNODE_IS_SEMI_COLLAPSED);
11910
11911           redraw = TRUE;
11912         }
11913       else if (GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_SEMI_COLLAPSED))
11914         {
11915           GTK_RBNODE_UNSET_FLAG (node, GTK_RBNODE_IS_SEMI_COLLAPSED);
11916
11917           redraw = TRUE;
11918
11919         }
11920     }
11921
11922   if (redraw)
11923     {
11924       gtk_tree_view_queue_draw_arrow (tree_view, tree, node, NULL);
11925
11926       return TRUE;
11927     }
11928
11929   return FALSE;
11930 }
11931
11932 /**
11933  * gtk_tree_view_collapse_all:
11934  * @tree_view: A #GtkTreeView.
11935  *
11936  * Recursively collapses all visible, expanded nodes in @tree_view.
11937  **/
11938 void
11939 gtk_tree_view_collapse_all (GtkTreeView *tree_view)
11940 {
11941   GtkRBTree *tree;
11942   GtkRBNode *node;
11943   GtkTreePath *path;
11944   gint *indices;
11945
11946   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
11947
11948   if (tree_view->priv->tree == NULL)
11949     return;
11950
11951   path = gtk_tree_path_new ();
11952   gtk_tree_path_down (path);
11953   indices = gtk_tree_path_get_indices (path);
11954
11955   tree = tree_view->priv->tree;
11956   node = tree->root;
11957   while (node && node->left != tree->nil)
11958     node = node->left;
11959
11960   while (node)
11961     {
11962       if (node->children)
11963         gtk_tree_view_real_collapse_row (tree_view, path, tree, node, FALSE);
11964       indices[0]++;
11965       node = _gtk_rbtree_next (tree, node);
11966     }
11967
11968   gtk_tree_path_free (path);
11969 }
11970
11971 /**
11972  * gtk_tree_view_expand_to_path:
11973  * @tree_view: A #GtkTreeView.
11974  * @path: path to a row.
11975  *
11976  * Expands the row at @path. This will also expand all parent rows of
11977  * @path as necessary.
11978  *
11979  * Since: 2.2
11980  **/
11981 void
11982 gtk_tree_view_expand_to_path (GtkTreeView *tree_view,
11983                               GtkTreePath *path)
11984 {
11985   gint i, depth;
11986   gint *indices;
11987   GtkTreePath *tmp;
11988
11989   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
11990   g_return_if_fail (path != NULL);
11991
11992   depth = gtk_tree_path_get_depth (path);
11993   indices = gtk_tree_path_get_indices (path);
11994
11995   tmp = gtk_tree_path_new ();
11996   g_return_if_fail (tmp != NULL);
11997
11998   for (i = 0; i < depth; i++)
11999     {
12000       gtk_tree_path_append_index (tmp, indices[i]);
12001       gtk_tree_view_expand_row (tree_view, tmp, FALSE);
12002     }
12003
12004   gtk_tree_path_free (tmp);
12005 }
12006
12007 /* FIXME the bool return values for expand_row and collapse_row are
12008  * not analagous; they should be TRUE if the row had children and
12009  * was not already in the requested state.
12010  */
12011
12012
12013 static gboolean
12014 gtk_tree_view_real_expand_row (GtkTreeView *tree_view,
12015                                GtkTreePath *path,
12016                                GtkRBTree   *tree,
12017                                GtkRBNode   *node,
12018                                gboolean     open_all,
12019                                gboolean     animate)
12020 {
12021   GtkTreeIter iter;
12022   GtkTreeIter temp;
12023   gboolean expand;
12024
12025   if (animate)
12026     g_object_get (gtk_widget_get_settings (GTK_WIDGET (tree_view)),
12027                   "gtk-enable-animations", &animate,
12028                   NULL);
12029
12030   remove_auto_expand_timeout (tree_view);
12031
12032   if (node->children && !open_all)
12033     return FALSE;
12034
12035   if (! GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_PARENT))
12036     return FALSE;
12037
12038   gtk_tree_model_get_iter (tree_view->priv->model, &iter, path);
12039   if (! gtk_tree_model_iter_has_child (tree_view->priv->model, &iter))
12040     return FALSE;
12041
12042
12043    if (node->children && open_all)
12044     {
12045       gboolean retval = FALSE;
12046       GtkTreePath *tmp_path = gtk_tree_path_copy (path);
12047
12048       gtk_tree_path_append_index (tmp_path, 0);
12049       tree = node->children;
12050       node = tree->root;
12051       while (node->left != tree->nil)
12052         node = node->left;
12053       /* try to expand the children */
12054       do
12055         {
12056          gboolean t;
12057          t = gtk_tree_view_real_expand_row (tree_view, tmp_path, tree, node,
12058                                             TRUE, animate);
12059          if (t)
12060            retval = TRUE;
12061
12062          gtk_tree_path_next (tmp_path);
12063          node = _gtk_rbtree_next (tree, node);
12064        }
12065       while (node != NULL);
12066
12067       gtk_tree_path_free (tmp_path);
12068
12069       return retval;
12070     }
12071
12072   g_signal_emit (tree_view, tree_view_signals[TEST_EXPAND_ROW], 0, &iter, path, &expand);
12073
12074   if (!gtk_tree_model_iter_has_child (tree_view->priv->model, &iter))
12075     return FALSE;
12076
12077   if (expand)
12078     return FALSE;
12079
12080   node->children = _gtk_rbtree_new ();
12081   node->children->parent_tree = tree;
12082   node->children->parent_node = node;
12083
12084   gtk_tree_model_iter_children (tree_view->priv->model, &temp, &iter);
12085
12086   gtk_tree_view_build_tree (tree_view,
12087                             node->children,
12088                             &temp,
12089                             gtk_tree_path_get_depth (path) + 1,
12090                             open_all);
12091
12092   remove_expand_collapse_timeout (tree_view);
12093
12094   if (animate)
12095     add_expand_collapse_timeout (tree_view, tree, node, TRUE);
12096
12097   install_presize_handler (tree_view);
12098
12099   g_signal_emit (tree_view, tree_view_signals[ROW_EXPANDED], 0, &iter, path);
12100   if (open_all && node->children)
12101     {
12102       _gtk_rbtree_traverse (node->children,
12103                             node->children->root,
12104                             G_PRE_ORDER,
12105                             gtk_tree_view_expand_all_emission_helper,
12106                             tree_view);
12107     }
12108   return TRUE;
12109 }
12110
12111
12112 /**
12113  * gtk_tree_view_expand_row:
12114  * @tree_view: a #GtkTreeView
12115  * @path: path to a row
12116  * @open_all: whether to recursively expand, or just expand immediate children
12117  *
12118  * Opens the row so its children are visible.
12119  *
12120  * Return value: %TRUE if the row existed and had children
12121  **/
12122 gboolean
12123 gtk_tree_view_expand_row (GtkTreeView *tree_view,
12124                           GtkTreePath *path,
12125                           gboolean     open_all)
12126 {
12127   GtkRBTree *tree;
12128   GtkRBNode *node;
12129
12130   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), FALSE);
12131   g_return_val_if_fail (tree_view->priv->model != NULL, FALSE);
12132   g_return_val_if_fail (path != NULL, FALSE);
12133
12134   if (_gtk_tree_view_find_node (tree_view,
12135                                 path,
12136                                 &tree,
12137                                 &node))
12138     return FALSE;
12139
12140   if (tree != NULL)
12141     return gtk_tree_view_real_expand_row (tree_view, path, tree, node, open_all, FALSE);
12142   else
12143     return FALSE;
12144 }
12145
12146 static gboolean
12147 gtk_tree_view_real_collapse_row (GtkTreeView *tree_view,
12148                                  GtkTreePath *path,
12149                                  GtkRBTree   *tree,
12150                                  GtkRBNode   *node,
12151                                  gboolean     animate)
12152 {
12153   GtkTreeIter iter;
12154   GtkTreeIter children;
12155   gboolean collapse;
12156   gint x, y;
12157   GList *list;
12158   GdkWindow *child, *parent;
12159
12160   if (animate)
12161     g_object_get (gtk_widget_get_settings (GTK_WIDGET (tree_view)),
12162                   "gtk-enable-animations", &animate,
12163                   NULL);
12164
12165   remove_auto_expand_timeout (tree_view);
12166
12167   if (node->children == NULL)
12168     return FALSE;
12169
12170   gtk_tree_model_get_iter (tree_view->priv->model, &iter, path);
12171
12172   g_signal_emit (tree_view, tree_view_signals[TEST_COLLAPSE_ROW], 0, &iter, path, &collapse);
12173
12174   if (collapse)
12175     return FALSE;
12176
12177   /* if the prelighted node is a child of us, we want to unprelight it.  We have
12178    * a chance to prelight the correct node below */
12179
12180   if (tree_view->priv->prelight_tree)
12181     {
12182       GtkRBTree *parent_tree;
12183       GtkRBNode *parent_node;
12184
12185       parent_tree = tree_view->priv->prelight_tree->parent_tree;
12186       parent_node = tree_view->priv->prelight_tree->parent_node;
12187       while (parent_tree)
12188         {
12189           if (parent_tree == tree && parent_node == node)
12190             {
12191               ensure_unprelighted (tree_view);
12192               break;
12193             }
12194           parent_node = parent_tree->parent_node;
12195           parent_tree = parent_tree->parent_tree;
12196         }
12197     }
12198
12199   TREE_VIEW_INTERNAL_ASSERT (gtk_tree_model_iter_children (tree_view->priv->model, &children, &iter), FALSE);
12200
12201   for (list = tree_view->priv->columns; list; list = list->next)
12202     {
12203       GtkTreeViewColumn *column = list->data;
12204
12205       if (column->visible == FALSE)
12206         continue;
12207       if (gtk_tree_view_column_get_sizing (column) == GTK_TREE_VIEW_COLUMN_AUTOSIZE)
12208         _gtk_tree_view_column_cell_set_dirty (column, TRUE);
12209     }
12210
12211   if (tree_view->priv->destroy_count_func)
12212     {
12213       GtkTreePath *child_path;
12214       gint child_count = 0;
12215       child_path = gtk_tree_path_copy (path);
12216       gtk_tree_path_down (child_path);
12217       if (node->children)
12218         _gtk_rbtree_traverse (node->children, node->children->root, G_POST_ORDER, count_children_helper, &child_count);
12219       tree_view->priv->destroy_count_func (tree_view, child_path, child_count, tree_view->priv->destroy_count_data);
12220       gtk_tree_path_free (child_path);
12221     }
12222
12223   if (gtk_tree_row_reference_valid (tree_view->priv->cursor))
12224     {
12225       GtkTreePath *cursor_path = gtk_tree_row_reference_get_path (tree_view->priv->cursor);
12226
12227       if (gtk_tree_path_is_ancestor (path, cursor_path))
12228         {
12229           gtk_tree_row_reference_free (tree_view->priv->cursor);
12230           tree_view->priv->cursor = gtk_tree_row_reference_new_proxy (G_OBJECT (tree_view),
12231                                                                       tree_view->priv->model,
12232                                                                       path);
12233         }
12234       gtk_tree_path_free (cursor_path);
12235     }
12236
12237   if (gtk_tree_row_reference_valid (tree_view->priv->anchor))
12238     {
12239       GtkTreePath *anchor_path = gtk_tree_row_reference_get_path (tree_view->priv->anchor);
12240       if (gtk_tree_path_is_ancestor (path, anchor_path))
12241         {
12242           gtk_tree_row_reference_free (tree_view->priv->anchor);
12243           tree_view->priv->anchor = NULL;
12244         }
12245       gtk_tree_path_free (anchor_path);
12246     }
12247
12248   /* Stop a pending double click */
12249   tree_view->priv->last_button_x = -1;
12250   tree_view->priv->last_button_y = -1;
12251
12252   remove_expand_collapse_timeout (tree_view);
12253
12254   if (gtk_tree_view_unref_and_check_selection_tree (tree_view, node->children))
12255     {
12256       _gtk_rbtree_remove (node->children);
12257       g_signal_emit_by_name (tree_view->priv->selection, "changed");
12258     }
12259   else
12260     _gtk_rbtree_remove (node->children);
12261
12262   if (animate)
12263     add_expand_collapse_timeout (tree_view, tree, node, FALSE);
12264
12265   if (gtk_widget_get_mapped (GTK_WIDGET (tree_view)))
12266     {
12267       gtk_widget_queue_resize (GTK_WIDGET (tree_view));
12268     }
12269
12270   g_signal_emit (tree_view, tree_view_signals[ROW_COLLAPSED], 0, &iter, path);
12271
12272   if (gtk_widget_get_mapped (GTK_WIDGET (tree_view)))
12273     {
12274       /* now that we've collapsed all rows, we want to try to set the prelight
12275        * again. To do this, we fake a motion event and send it to ourselves. */
12276
12277       child = tree_view->priv->bin_window;
12278       parent = gdk_window_get_parent (child);
12279
12280       if (gdk_window_get_pointer (parent, &x, &y, NULL) == child)
12281         {
12282           GdkEventMotion event;
12283           gint child_x, child_y;
12284
12285           gdk_window_get_position (child, &child_x, &child_y);
12286
12287           event.window = tree_view->priv->bin_window;
12288           event.x = x - child_x;
12289           event.y = y - child_y;
12290
12291           /* despite the fact this isn't a real event, I'm almost positive it will
12292            * never trigger a drag event.  maybe_drag is the only function that uses
12293            * more than just event.x and event.y. */
12294           gtk_tree_view_motion_bin_window (GTK_WIDGET (tree_view), &event);
12295         }
12296     }
12297
12298   return TRUE;
12299 }
12300
12301 /**
12302  * gtk_tree_view_collapse_row:
12303  * @tree_view: a #GtkTreeView
12304  * @path: path to a row in the @tree_view
12305  *
12306  * Collapses a row (hides its child rows, if they exist).
12307  *
12308  * Return value: %TRUE if the row was collapsed.
12309  **/
12310 gboolean
12311 gtk_tree_view_collapse_row (GtkTreeView *tree_view,
12312                             GtkTreePath *path)
12313 {
12314   GtkRBTree *tree;
12315   GtkRBNode *node;
12316
12317   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), FALSE);
12318   g_return_val_if_fail (tree_view->priv->tree != NULL, FALSE);
12319   g_return_val_if_fail (path != NULL, FALSE);
12320
12321   if (_gtk_tree_view_find_node (tree_view,
12322                                 path,
12323                                 &tree,
12324                                 &node))
12325     return FALSE;
12326
12327   if (tree == NULL || node->children == NULL)
12328     return FALSE;
12329
12330   return gtk_tree_view_real_collapse_row (tree_view, path, tree, node, FALSE);
12331 }
12332
12333 static void
12334 gtk_tree_view_map_expanded_rows_helper (GtkTreeView            *tree_view,
12335                                         GtkRBTree              *tree,
12336                                         GtkTreePath            *path,
12337                                         GtkTreeViewMappingFunc  func,
12338                                         gpointer                user_data)
12339 {
12340   GtkRBNode *node;
12341
12342   if (tree == NULL || tree->root == NULL)
12343     return;
12344
12345   node = tree->root;
12346
12347   while (node && node->left != tree->nil)
12348     node = node->left;
12349
12350   while (node)
12351     {
12352       if (node->children)
12353         {
12354           (* func) (tree_view, path, user_data);
12355           gtk_tree_path_down (path);
12356           gtk_tree_view_map_expanded_rows_helper (tree_view, node->children, path, func, user_data);
12357           gtk_tree_path_up (path);
12358         }
12359       gtk_tree_path_next (path);
12360       node = _gtk_rbtree_next (tree, node);
12361     }
12362 }
12363
12364 /**
12365  * gtk_tree_view_map_expanded_rows:
12366  * @tree_view: A #GtkTreeView
12367  * @func: A function to be called
12368  * @data: User data to be passed to the function.
12369  *
12370  * Calls @func on all expanded rows.
12371  **/
12372 void
12373 gtk_tree_view_map_expanded_rows (GtkTreeView            *tree_view,
12374                                  GtkTreeViewMappingFunc  func,
12375                                  gpointer                user_data)
12376 {
12377   GtkTreePath *path;
12378
12379   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
12380   g_return_if_fail (func != NULL);
12381
12382   path = gtk_tree_path_new_first ();
12383
12384   gtk_tree_view_map_expanded_rows_helper (tree_view,
12385                                           tree_view->priv->tree,
12386                                           path, func, user_data);
12387
12388   gtk_tree_path_free (path);
12389 }
12390
12391 /**
12392  * gtk_tree_view_row_expanded:
12393  * @tree_view: A #GtkTreeView.
12394  * @path: A #GtkTreePath to test expansion state.
12395  *
12396  * Returns %TRUE if the node pointed to by @path is expanded in @tree_view.
12397  *
12398  * Return value: %TRUE if #path is expanded.
12399  **/
12400 gboolean
12401 gtk_tree_view_row_expanded (GtkTreeView *tree_view,
12402                             GtkTreePath *path)
12403 {
12404   GtkRBTree *tree;
12405   GtkRBNode *node;
12406
12407   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), FALSE);
12408   g_return_val_if_fail (path != NULL, FALSE);
12409
12410   _gtk_tree_view_find_node (tree_view, path, &tree, &node);
12411
12412   if (node == NULL)
12413     return FALSE;
12414
12415   return (node->children != NULL);
12416 }
12417
12418 /**
12419  * gtk_tree_view_get_reorderable:
12420  * @tree_view: a #GtkTreeView
12421  *
12422  * Retrieves whether the user can reorder the tree via drag-and-drop. See
12423  * gtk_tree_view_set_reorderable().
12424  *
12425  * Return value: %TRUE if the tree can be reordered.
12426  **/
12427 gboolean
12428 gtk_tree_view_get_reorderable (GtkTreeView *tree_view)
12429 {
12430   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), FALSE);
12431
12432   return tree_view->priv->reorderable;
12433 }
12434
12435 /**
12436  * gtk_tree_view_set_reorderable:
12437  * @tree_view: A #GtkTreeView.
12438  * @reorderable: %TRUE, if the tree can be reordered.
12439  *
12440  * This function is a convenience function to allow you to reorder
12441  * models that support the #GtkDragSourceIface and the
12442  * #GtkDragDestIface.  Both #GtkTreeStore and #GtkListStore support
12443  * these.  If @reorderable is %TRUE, then the user can reorder the
12444  * model by dragging and dropping rows. The developer can listen to
12445  * these changes by connecting to the model's row_inserted and
12446  * row_deleted signals. The reordering is implemented by setting up
12447  * the tree view as a drag source and destination. Therefore, drag and
12448  * drop can not be used in a reorderable view for any other purpose.
12449  *
12450  * This function does not give you any degree of control over the order -- any
12451  * reordering is allowed.  If more control is needed, you should probably
12452  * handle drag and drop manually.
12453  **/
12454 void
12455 gtk_tree_view_set_reorderable (GtkTreeView *tree_view,
12456                                gboolean     reorderable)
12457 {
12458   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
12459
12460   reorderable = reorderable != FALSE;
12461
12462   if (tree_view->priv->reorderable == reorderable)
12463     return;
12464
12465   if (reorderable)
12466     {
12467       const GtkTargetEntry row_targets[] = {
12468         { "GTK_TREE_MODEL_ROW", GTK_TARGET_SAME_WIDGET, 0 }
12469       };
12470
12471       gtk_tree_view_enable_model_drag_source (tree_view,
12472                                               GDK_BUTTON1_MASK,
12473                                               row_targets,
12474                                               G_N_ELEMENTS (row_targets),
12475                                               GDK_ACTION_MOVE);
12476       gtk_tree_view_enable_model_drag_dest (tree_view,
12477                                             row_targets,
12478                                             G_N_ELEMENTS (row_targets),
12479                                             GDK_ACTION_MOVE);
12480     }
12481   else
12482     {
12483       gtk_tree_view_unset_rows_drag_source (tree_view);
12484       gtk_tree_view_unset_rows_drag_dest (tree_view);
12485     }
12486
12487   tree_view->priv->reorderable = reorderable;
12488
12489   g_object_notify (G_OBJECT (tree_view), "reorderable");
12490 }
12491
12492 static void
12493 gtk_tree_view_real_set_cursor (GtkTreeView     *tree_view,
12494                                GtkTreePath     *path,
12495                                gboolean         clear_and_select,
12496                                gboolean         clamp_node)
12497 {
12498   GtkRBTree *tree = NULL;
12499   GtkRBNode *node = NULL;
12500
12501   if (gtk_tree_row_reference_valid (tree_view->priv->cursor))
12502     {
12503       GtkTreePath *cursor_path;
12504       cursor_path = gtk_tree_row_reference_get_path (tree_view->priv->cursor);
12505       gtk_tree_view_queue_draw_path (tree_view, cursor_path, NULL);
12506       gtk_tree_path_free (cursor_path);
12507     }
12508
12509   gtk_tree_row_reference_free (tree_view->priv->cursor);
12510   tree_view->priv->cursor = NULL;
12511
12512   /* One cannot set the cursor on a separator.   Also, if
12513    * _gtk_tree_view_find_node returns TRUE, it ran out of tree
12514    * before finding the tree and node belonging to path.  The
12515    * path maps to a non-existing path and we will silently bail out.
12516    * We unset tree and node to avoid further processing.
12517    */
12518   if (!row_is_separator (tree_view, NULL, path)
12519       && _gtk_tree_view_find_node (tree_view, path, &tree, &node) == FALSE)
12520     {
12521       tree_view->priv->cursor =
12522           gtk_tree_row_reference_new_proxy (G_OBJECT (tree_view),
12523                                             tree_view->priv->model,
12524                                             path);
12525     }
12526   else
12527     {
12528       tree = NULL;
12529       node = NULL;
12530     }
12531
12532   if (tree != NULL)
12533     {
12534       GtkRBTree *new_tree = NULL;
12535       GtkRBNode *new_node = NULL;
12536
12537       if (clear_and_select && !tree_view->priv->ctrl_pressed)
12538         {
12539           GtkTreeSelectMode mode = 0;
12540
12541           if (tree_view->priv->ctrl_pressed)
12542             mode |= GTK_TREE_SELECT_MODE_TOGGLE;
12543           if (tree_view->priv->shift_pressed)
12544             mode |= GTK_TREE_SELECT_MODE_EXTEND;
12545
12546           _gtk_tree_selection_internal_select_node (tree_view->priv->selection,
12547                                                     node, tree, path, mode,
12548                                                     FALSE);
12549         }
12550
12551       /* We have to re-find tree and node here again, somebody might have
12552        * cleared the node or the whole tree in the GtkTreeSelection::changed
12553        * callback. If the nodes differ we bail out here.
12554        */
12555       _gtk_tree_view_find_node (tree_view, path, &new_tree, &new_node);
12556
12557       if (tree != new_tree || node != new_node)
12558         return;
12559
12560       if (clamp_node)
12561         {
12562           gtk_tree_view_clamp_node_visible (tree_view, tree, node);
12563           _gtk_tree_view_queue_draw_node (tree_view, tree, node, NULL);
12564         }
12565     }
12566
12567   g_signal_emit (tree_view, tree_view_signals[CURSOR_CHANGED], 0);
12568 }
12569
12570 /**
12571  * gtk_tree_view_get_cursor:
12572  * @tree_view: A #GtkTreeView
12573  * @path: (allow-none): A pointer to be filled with the current cursor path, or %NULL
12574  * @focus_column: (allow-none): A pointer to be filled with the current focus column, or %NULL
12575  *
12576  * Fills in @path and @focus_column with the current path and focus column.  If
12577  * the cursor isn't currently set, then *@path will be %NULL.  If no column
12578  * currently has focus, then *@focus_column will be %NULL.
12579  *
12580  * The returned #GtkTreePath must be freed with gtk_tree_path_free() when
12581  * you are done with it.
12582  **/
12583 void
12584 gtk_tree_view_get_cursor (GtkTreeView        *tree_view,
12585                           GtkTreePath       **path,
12586                           GtkTreeViewColumn **focus_column)
12587 {
12588   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
12589
12590   if (path)
12591     {
12592       if (gtk_tree_row_reference_valid (tree_view->priv->cursor))
12593         *path = gtk_tree_row_reference_get_path (tree_view->priv->cursor);
12594       else
12595         *path = NULL;
12596     }
12597
12598   if (focus_column)
12599     {
12600       *focus_column = tree_view->priv->focus_column;
12601     }
12602 }
12603
12604 /**
12605  * gtk_tree_view_set_cursor:
12606  * @tree_view: A #GtkTreeView
12607  * @path: A #GtkTreePath
12608  * @focus_column: (allow-none): A #GtkTreeViewColumn, or %NULL
12609  * @start_editing: %TRUE if the specified cell should start being edited.
12610  *
12611  * Sets the current keyboard focus to be at @path, and selects it.  This is
12612  * useful when you want to focus the user's attention on a particular row.  If
12613  * @focus_column is not %NULL, then focus is given to the column specified by
12614  * it. Additionally, if @focus_column is specified, and @start_editing is
12615  * %TRUE, then editing should be started in the specified cell.
12616  * This function is often followed by @gtk_widget_grab_focus (@tree_view)
12617  * in order to give keyboard focus to the widget.  Please note that editing
12618  * can only happen when the widget is realized.
12619  *
12620  * If @path is invalid for @model, the current cursor (if any) will be unset
12621  * and the function will return without failing.
12622  **/
12623 void
12624 gtk_tree_view_set_cursor (GtkTreeView       *tree_view,
12625                           GtkTreePath       *path,
12626                           GtkTreeViewColumn *focus_column,
12627                           gboolean           start_editing)
12628 {
12629   gtk_tree_view_set_cursor_on_cell (tree_view, path, focus_column,
12630                                     NULL, start_editing);
12631 }
12632
12633 /**
12634  * gtk_tree_view_set_cursor_on_cell:
12635  * @tree_view: A #GtkTreeView
12636  * @path: A #GtkTreePath
12637  * @focus_column: (allow-none): A #GtkTreeViewColumn, or %NULL
12638  * @focus_cell: (allow-none): A #GtkCellRenderer, or %NULL
12639  * @start_editing: %TRUE if the specified cell should start being edited.
12640  *
12641  * Sets the current keyboard focus to be at @path, and selects it.  This is
12642  * useful when you want to focus the user's attention on a particular row.  If
12643  * @focus_column is not %NULL, then focus is given to the column specified by
12644  * it. If @focus_column and @focus_cell are not %NULL, and @focus_column
12645  * contains 2 or more editable or activatable cells, then focus is given to
12646  * the cell specified by @focus_cell. Additionally, if @focus_column is
12647  * specified, and @start_editing is %TRUE, then editing should be started in
12648  * the specified cell.  This function is often followed by
12649  * @gtk_widget_grab_focus (@tree_view) in order to give keyboard focus to the
12650  * widget.  Please note that editing can only happen when the widget is
12651  * realized.
12652  *
12653  * If @path is invalid for @model, the current cursor (if any) will be unset
12654  * and the function will return without failing.
12655  *
12656  * Since: 2.2
12657  **/
12658 void
12659 gtk_tree_view_set_cursor_on_cell (GtkTreeView       *tree_view,
12660                                   GtkTreePath       *path,
12661                                   GtkTreeViewColumn *focus_column,
12662                                   GtkCellRenderer   *focus_cell,
12663                                   gboolean           start_editing)
12664 {
12665   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
12666   g_return_if_fail (path != NULL);
12667   g_return_if_fail (focus_column == NULL || GTK_IS_TREE_VIEW_COLUMN (focus_column));
12668
12669   if (!tree_view->priv->model)
12670     return;
12671
12672   if (focus_cell)
12673     {
12674       g_return_if_fail (focus_column);
12675       g_return_if_fail (GTK_IS_CELL_RENDERER (focus_cell));
12676     }
12677
12678   /* cancel the current editing, if it exists */
12679   if (tree_view->priv->edited_column &&
12680       tree_view->priv->edited_column->editable_widget)
12681     gtk_tree_view_stop_editing (tree_view, TRUE);
12682
12683   gtk_tree_view_real_set_cursor (tree_view, path, TRUE, TRUE);
12684
12685   if (focus_column && focus_column->visible)
12686     {
12687       GList *list;
12688       gboolean column_in_tree = FALSE;
12689
12690       for (list = tree_view->priv->columns; list; list = list->next)
12691         if (list->data == focus_column)
12692           {
12693             column_in_tree = TRUE;
12694             break;
12695           }
12696       g_return_if_fail (column_in_tree);
12697       tree_view->priv->focus_column = focus_column;
12698       if (focus_cell)
12699         gtk_tree_view_column_focus_cell (focus_column, focus_cell);
12700       if (start_editing)
12701         gtk_tree_view_start_editing (tree_view, path);
12702     }
12703 }
12704
12705 /**
12706  * gtk_tree_view_get_bin_window:
12707  * @tree_view: A #GtkTreeView
12708  *
12709  * Returns the window that @tree_view renders to.  This is used primarily to
12710  * compare to <literal>event->window</literal> to confirm that the event on
12711  * @tree_view is on the right window.
12712  *
12713  * Return value: A #GdkWindow, or %NULL when @tree_view hasn't been realized yet
12714  **/
12715 GdkWindow *
12716 gtk_tree_view_get_bin_window (GtkTreeView *tree_view)
12717 {
12718   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), NULL);
12719
12720   return tree_view->priv->bin_window;
12721 }
12722
12723 /**
12724  * gtk_tree_view_get_path_at_pos:
12725  * @tree_view: A #GtkTreeView.
12726  * @x: The x position to be identified (relative to bin_window).
12727  * @y: The y position to be identified (relative to bin_window).
12728  * @path: (out) (allow-none): A pointer to a #GtkTreePath pointer to be filled in, or %NULL
12729  * @column: (out) (allow-none): A pointer to a #GtkTreeViewColumn pointer to be filled in, or %NULL
12730  * @cell_x: (out) (allow-none): A pointer where the X coordinate relative to the cell can be placed, or %NULL
12731  * @cell_y: (out) (allow-none): A pointer where the Y coordinate relative to the cell can be placed, or %NULL
12732  *
12733  * Finds the path at the point (@x, @y), relative to bin_window coordinates
12734  * (please see gtk_tree_view_get_bin_window()).
12735  * That is, @x and @y are relative to an events coordinates. @x and @y must
12736  * come from an event on the @tree_view only where <literal>event->window ==
12737  * gtk_tree_view_get_bin_window (<!-- -->)</literal>. It is primarily for
12738  * things like popup menus. If @path is non-%NULL, then it will be filled
12739  * with the #GtkTreePath at that point.  This path should be freed with
12740  * gtk_tree_path_free().  If @column is non-%NULL, then it will be filled
12741  * with the column at that point.  @cell_x and @cell_y return the coordinates
12742  * relative to the cell background (i.e. the @background_area passed to
12743  * gtk_cell_renderer_render()).  This function is only meaningful if
12744  * @tree_view is realized.  Therefore this function will always return %FALSE
12745  * if @tree_view is not realized or does not have a model.
12746  *
12747  * For converting widget coordinates (eg. the ones you get from
12748  * GtkWidget::query-tooltip), please see
12749  * gtk_tree_view_convert_widget_to_bin_window_coords().
12750  *
12751  * Return value: %TRUE if a row exists at that coordinate.
12752  **/
12753 gboolean
12754 gtk_tree_view_get_path_at_pos (GtkTreeView        *tree_view,
12755                                gint                x,
12756                                gint                y,
12757                                GtkTreePath       **path,
12758                                GtkTreeViewColumn **column,
12759                                gint               *cell_x,
12760                                gint               *cell_y)
12761 {
12762   GtkRBTree *tree;
12763   GtkRBNode *node;
12764   gint y_offset;
12765
12766   g_return_val_if_fail (tree_view != NULL, FALSE);
12767
12768   if (path)
12769     *path = NULL;
12770   if (column)
12771     *column = NULL;
12772
12773   if (tree_view->priv->bin_window == NULL)
12774     return FALSE;
12775
12776   if (tree_view->priv->tree == NULL)
12777     return FALSE;
12778
12779   if (x > tree_view->priv->hadjustment->upper)
12780     return FALSE;
12781
12782   if (x < 0 || y < 0)
12783     return FALSE;
12784
12785   if (column || cell_x)
12786     {
12787       GtkTreeViewColumn *tmp_column;
12788       GtkTreeViewColumn *last_column = NULL;
12789       GList *list;
12790       gint remaining_x = x;
12791       gboolean found = FALSE;
12792       gboolean rtl;
12793
12794       rtl = (gtk_widget_get_direction (GTK_WIDGET (tree_view)) == GTK_TEXT_DIR_RTL);
12795       for (list = (rtl ? g_list_last (tree_view->priv->columns) : g_list_first (tree_view->priv->columns));
12796            list;
12797            list = (rtl ? list->prev : list->next))
12798         {
12799           tmp_column = list->data;
12800
12801           if (tmp_column->visible == FALSE)
12802             continue;
12803
12804           last_column = tmp_column;
12805           if (remaining_x <= tmp_column->width)
12806             {
12807               found = TRUE;
12808
12809               if (column)
12810                 *column = tmp_column;
12811
12812               if (cell_x)
12813                 *cell_x = remaining_x;
12814
12815               break;
12816             }
12817           remaining_x -= tmp_column->width;
12818         }
12819
12820       /* If found is FALSE and there is a last_column, then it the remainder
12821        * space is in that area
12822        */
12823       if (!found)
12824         {
12825           if (last_column)
12826             {
12827               if (column)
12828                 *column = last_column;
12829
12830               if (cell_x)
12831                 *cell_x = last_column->width + remaining_x;
12832             }
12833           else
12834             {
12835               return FALSE;
12836             }
12837         }
12838     }
12839
12840   y_offset = _gtk_rbtree_find_offset (tree_view->priv->tree,
12841                                       TREE_WINDOW_Y_TO_RBTREE_Y (tree_view, y),
12842                                       &tree, &node);
12843
12844   if (tree == NULL)
12845     return FALSE;
12846
12847   if (cell_y)
12848     *cell_y = y_offset;
12849
12850   if (path)
12851     *path = _gtk_tree_view_find_path (tree_view, tree, node);
12852
12853   return TRUE;
12854 }
12855
12856
12857 /**
12858  * gtk_tree_view_get_cell_area:
12859  * @tree_view: a #GtkTreeView
12860  * @path: (allow-none): a #GtkTreePath for the row, or %NULL to get only horizontal coordinates
12861  * @column: (allow-none): a #GtkTreeViewColumn for the column, or %NULL to get only vertical coordinates
12862  * @rect: rectangle to fill with cell rect
12863  *
12864  * Fills the bounding rectangle in bin_window coordinates for the cell at the
12865  * row specified by @path and the column specified by @column.  If @path is
12866  * %NULL, or points to a path not currently displayed, the @y and @height fields
12867  * of the rectangle will be filled with 0. If @column is %NULL, the @x and @width
12868  * fields will be filled with 0.  The sum of all cell rects does not cover the
12869  * entire tree; there are extra pixels in between rows, for example. The
12870  * returned rectangle is equivalent to the @cell_area passed to
12871  * gtk_cell_renderer_render().  This function is only valid if @tree_view is
12872  * realized.
12873  **/
12874 void
12875 gtk_tree_view_get_cell_area (GtkTreeView        *tree_view,
12876                              GtkTreePath        *path,
12877                              GtkTreeViewColumn  *column,
12878                              GdkRectangle       *rect)
12879 {
12880   GtkRBTree *tree = NULL;
12881   GtkRBNode *node = NULL;
12882   gint vertical_separator;
12883   gint horizontal_separator;
12884
12885   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
12886   g_return_if_fail (column == NULL || GTK_IS_TREE_VIEW_COLUMN (column));
12887   g_return_if_fail (rect != NULL);
12888   g_return_if_fail (!column || column->tree_view == (GtkWidget *) tree_view);
12889   g_return_if_fail (gtk_widget_get_realized (GTK_WIDGET (tree_view)));
12890
12891   gtk_widget_style_get (GTK_WIDGET (tree_view),
12892                         "vertical-separator", &vertical_separator,
12893                         "horizontal-separator", &horizontal_separator,
12894                         NULL);
12895
12896   rect->x = 0;
12897   rect->y = 0;
12898   rect->width = 0;
12899   rect->height = 0;
12900
12901   if (column)
12902     {
12903       rect->x = column->button->allocation.x + horizontal_separator/2;
12904       rect->width = column->button->allocation.width - horizontal_separator;
12905     }
12906
12907   if (path)
12908     {
12909       gboolean ret = _gtk_tree_view_find_node (tree_view, path, &tree, &node);
12910
12911       /* Get vertical coords */
12912       if ((!ret && tree == NULL) || ret)
12913         return;
12914
12915       rect->y = CELL_FIRST_PIXEL (tree_view, tree, node, vertical_separator);
12916       rect->height = MAX (CELL_HEIGHT (node, vertical_separator), tree_view->priv->expander_size - vertical_separator);
12917
12918       if (column &&
12919           gtk_tree_view_is_expander_column (tree_view, column))
12920         {
12921           gint depth = gtk_tree_path_get_depth (path);
12922           gboolean rtl;
12923
12924           rtl = gtk_widget_get_direction (GTK_WIDGET (tree_view)) == GTK_TEXT_DIR_RTL;
12925
12926           if (!rtl)
12927             rect->x += (depth - 1) * tree_view->priv->level_indentation;
12928           rect->width -= (depth - 1) * tree_view->priv->level_indentation;
12929
12930           if (TREE_VIEW_DRAW_EXPANDERS (tree_view))
12931             {
12932               if (!rtl)
12933                 rect->x += depth * tree_view->priv->expander_size;
12934               rect->width -= depth * tree_view->priv->expander_size;
12935             }
12936
12937           rect->width = MAX (rect->width, 0);
12938         }
12939     }
12940 }
12941
12942 /**
12943  * gtk_tree_view_get_background_area:
12944  * @tree_view: a #GtkTreeView
12945  * @path: (allow-none): a #GtkTreePath for the row, or %NULL to get only horizontal coordinates
12946  * @column: (allow-none): a #GtkTreeViewColumn for the column, or %NULL to get only vertical coordiantes
12947  * @rect: rectangle to fill with cell background rect
12948  *
12949  * Fills the bounding rectangle in bin_window coordinates for the cell at the
12950  * row specified by @path and the column specified by @column.  If @path is
12951  * %NULL, or points to a node not found in the tree, the @y and @height fields of
12952  * the rectangle will be filled with 0. If @column is %NULL, the @x and @width
12953  * fields will be filled with 0.  The returned rectangle is equivalent to the
12954  * @background_area passed to gtk_cell_renderer_render().  These background
12955  * areas tile to cover the entire bin window.  Contrast with the @cell_area,
12956  * returned by gtk_tree_view_get_cell_area(), which returns only the cell
12957  * itself, excluding surrounding borders and the tree expander area.
12958  *
12959  **/
12960 void
12961 gtk_tree_view_get_background_area (GtkTreeView        *tree_view,
12962                                    GtkTreePath        *path,
12963                                    GtkTreeViewColumn  *column,
12964                                    GdkRectangle       *rect)
12965 {
12966   GtkRBTree *tree = NULL;
12967   GtkRBNode *node = NULL;
12968
12969   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
12970   g_return_if_fail (column == NULL || GTK_IS_TREE_VIEW_COLUMN (column));
12971   g_return_if_fail (rect != NULL);
12972
12973   rect->x = 0;
12974   rect->y = 0;
12975   rect->width = 0;
12976   rect->height = 0;
12977
12978   if (path)
12979     {
12980       /* Get vertical coords */
12981
12982       if (!_gtk_tree_view_find_node (tree_view, path, &tree, &node) &&
12983           tree == NULL)
12984         return;
12985
12986       rect->y = BACKGROUND_FIRST_PIXEL (tree_view, tree, node);
12987
12988       rect->height = ROW_HEIGHT (tree_view, BACKGROUND_HEIGHT (node));
12989     }
12990
12991   if (column)
12992     {
12993       gint x2 = 0;
12994
12995       gtk_tree_view_get_background_xrange (tree_view, tree, column, &rect->x, &x2);
12996       rect->width = x2 - rect->x;
12997     }
12998 }
12999
13000 /**
13001  * gtk_tree_view_get_visible_rect:
13002  * @tree_view: a #GtkTreeView
13003  * @visible_rect: rectangle to fill
13004  *
13005  * Fills @visible_rect with the currently-visible region of the
13006  * buffer, in tree coordinates. Convert to bin_window coordinates with
13007  * gtk_tree_view_convert_tree_to_bin_window_coords().
13008  * Tree coordinates start at 0,0 for row 0 of the tree, and cover the entire
13009  * scrollable area of the tree.
13010  **/
13011 void
13012 gtk_tree_view_get_visible_rect (GtkTreeView  *tree_view,
13013                                 GdkRectangle *visible_rect)
13014 {
13015   GtkWidget *widget;
13016
13017   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
13018
13019   widget = GTK_WIDGET (tree_view);
13020
13021   if (visible_rect)
13022     {
13023       visible_rect->x = tree_view->priv->hadjustment->value;
13024       visible_rect->y = tree_view->priv->vadjustment->value;
13025       visible_rect->width = widget->allocation.width;
13026       visible_rect->height = widget->allocation.height - TREE_VIEW_HEADER_HEIGHT (tree_view);
13027     }
13028 }
13029
13030 /**
13031  * gtk_tree_view_widget_to_tree_coords:
13032  * @tree_view: a #GtkTreeView
13033  * @wx: X coordinate relative to bin_window
13034  * @wy: Y coordinate relative to bin_window
13035  * @tx: return location for tree X coordinate
13036  * @ty: return location for tree Y coordinate
13037  *
13038  * Converts bin_window coordinates to coordinates for the
13039  * tree (the full scrollable area of the tree).
13040  *
13041  * Deprecated: 2.12: Due to historial reasons the name of this function is
13042  * incorrect.  For converting coordinates relative to the widget to
13043  * bin_window coordinates, please see
13044  * gtk_tree_view_convert_widget_to_bin_window_coords().
13045  *
13046  **/
13047 void
13048 gtk_tree_view_widget_to_tree_coords (GtkTreeView *tree_view,
13049                                       gint         wx,
13050                                       gint         wy,
13051                                       gint        *tx,
13052                                       gint        *ty)
13053 {
13054   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
13055
13056   if (tx)
13057     *tx = wx + tree_view->priv->hadjustment->value;
13058   if (ty)
13059     *ty = wy + tree_view->priv->dy;
13060 }
13061
13062 /**
13063  * gtk_tree_view_tree_to_widget_coords:
13064  * @tree_view: a #GtkTreeView
13065  * @tx: tree X coordinate
13066  * @ty: tree Y coordinate
13067  * @wx: return location for X coordinate relative to bin_window
13068  * @wy: return location for Y coordinate relative to bin_window
13069  *
13070  * Converts tree coordinates (coordinates in full scrollable area of the tree)
13071  * to bin_window coordinates.
13072  *
13073  * Deprecated: 2.12: Due to historial reasons the name of this function is
13074  * incorrect.  For converting bin_window coordinates to coordinates relative
13075  * to bin_window, please see
13076  * gtk_tree_view_convert_bin_window_to_widget_coords().
13077  *
13078  **/
13079 void
13080 gtk_tree_view_tree_to_widget_coords (GtkTreeView *tree_view,
13081                                      gint         tx,
13082                                      gint         ty,
13083                                      gint        *wx,
13084                                      gint        *wy)
13085 {
13086   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
13087
13088   if (wx)
13089     *wx = tx - tree_view->priv->hadjustment->value;
13090   if (wy)
13091     *wy = ty - tree_view->priv->dy;
13092 }
13093
13094
13095 /**
13096  * gtk_tree_view_convert_widget_to_tree_coords:
13097  * @tree_view: a #GtkTreeView
13098  * @wx: X coordinate relative to the widget
13099  * @wy: Y coordinate relative to the widget
13100  * @tx: return location for tree X coordinate
13101  * @ty: return location for tree Y coordinate
13102  *
13103  * Converts widget coordinates to coordinates for the
13104  * tree (the full scrollable area of the tree).
13105  *
13106  * Since: 2.12
13107  **/
13108 void
13109 gtk_tree_view_convert_widget_to_tree_coords (GtkTreeView *tree_view,
13110                                              gint         wx,
13111                                              gint         wy,
13112                                              gint        *tx,
13113                                              gint        *ty)
13114 {
13115   gint x, y;
13116
13117   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
13118
13119   gtk_tree_view_convert_widget_to_bin_window_coords (tree_view,
13120                                                      wx, wy,
13121                                                      &x, &y);
13122   gtk_tree_view_convert_bin_window_to_tree_coords (tree_view,
13123                                                    x, y,
13124                                                    tx, ty);
13125 }
13126
13127 /**
13128  * gtk_tree_view_convert_tree_to_widget_coords:
13129  * @tree_view: a #GtkTreeView
13130  * @tx: X coordinate relative to the tree
13131  * @ty: Y coordinate relative to the tree
13132  * @wx: return location for widget X coordinate
13133  * @wy: return location for widget Y coordinate
13134  *
13135  * Converts tree coordinates (coordinates in full scrollable area of the tree)
13136  * to widget coordinates.
13137  *
13138  * Since: 2.12
13139  **/
13140 void
13141 gtk_tree_view_convert_tree_to_widget_coords (GtkTreeView *tree_view,
13142                                              gint         tx,
13143                                              gint         ty,
13144                                              gint        *wx,
13145                                              gint        *wy)
13146 {
13147   gint x, y;
13148
13149   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
13150
13151   gtk_tree_view_convert_tree_to_bin_window_coords (tree_view,
13152                                                    tx, ty,
13153                                                    &x, &y);
13154   gtk_tree_view_convert_bin_window_to_widget_coords (tree_view,
13155                                                      x, y,
13156                                                      wx, wy);
13157 }
13158
13159 /**
13160  * gtk_tree_view_convert_widget_to_bin_window_coords:
13161  * @tree_view: a #GtkTreeView
13162  * @wx: X coordinate relative to the widget
13163  * @wy: Y coordinate relative to the widget
13164  * @bx: return location for bin_window X coordinate
13165  * @by: return location for bin_window Y coordinate
13166  *
13167  * Converts widget coordinates to coordinates for the bin_window
13168  * (see gtk_tree_view_get_bin_window()).
13169  *
13170  * Since: 2.12
13171  **/
13172 void
13173 gtk_tree_view_convert_widget_to_bin_window_coords (GtkTreeView *tree_view,
13174                                                    gint         wx,
13175                                                    gint         wy,
13176                                                    gint        *bx,
13177                                                    gint        *by)
13178 {
13179   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
13180
13181   if (bx)
13182     *bx = wx + tree_view->priv->hadjustment->value;
13183   if (by)
13184     *by = wy - TREE_VIEW_HEADER_HEIGHT (tree_view);
13185 }
13186
13187 /**
13188  * gtk_tree_view_convert_bin_window_to_widget_coords:
13189  * @tree_view: a #GtkTreeView
13190  * @bx: bin_window X coordinate
13191  * @by: bin_window Y coordinate
13192  * @wx: return location for widget X coordinate
13193  * @wy: return location for widget Y coordinate
13194  *
13195  * Converts bin_window coordinates (see gtk_tree_view_get_bin_window())
13196  * to widget relative coordinates.
13197  *
13198  * Since: 2.12
13199  **/
13200 void
13201 gtk_tree_view_convert_bin_window_to_widget_coords (GtkTreeView *tree_view,
13202                                                    gint         bx,
13203                                                    gint         by,
13204                                                    gint        *wx,
13205                                                    gint        *wy)
13206 {
13207   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
13208
13209   if (wx)
13210     *wx = bx - tree_view->priv->hadjustment->value;
13211   if (wy)
13212     *wy = by + TREE_VIEW_HEADER_HEIGHT (tree_view);
13213 }
13214
13215 /**
13216  * gtk_tree_view_convert_tree_to_bin_window_coords:
13217  * @tree_view: a #GtkTreeView
13218  * @tx: tree X coordinate
13219  * @ty: tree Y coordinate
13220  * @bx: return location for X coordinate relative to bin_window
13221  * @by: return location for Y coordinate relative to bin_window
13222  *
13223  * Converts tree coordinates (coordinates in full scrollable area of the tree)
13224  * to bin_window coordinates.
13225  *
13226  * Since: 2.12
13227  **/
13228 void
13229 gtk_tree_view_convert_tree_to_bin_window_coords (GtkTreeView *tree_view,
13230                                                  gint         tx,
13231                                                  gint         ty,
13232                                                  gint        *bx,
13233                                                  gint        *by)
13234 {
13235   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
13236
13237   if (bx)
13238     *bx = tx;
13239   if (by)
13240     *by = ty - tree_view->priv->dy;
13241 }
13242
13243 /**
13244  * gtk_tree_view_convert_bin_window_to_tree_coords:
13245  * @tree_view: a #GtkTreeView
13246  * @bx: X coordinate relative to bin_window
13247  * @by: Y coordinate relative to bin_window
13248  * @tx: return location for tree X coordinate
13249  * @ty: return location for tree Y coordinate
13250  *
13251  * Converts bin_window coordinates to coordinates for the
13252  * tree (the full scrollable area of the tree).
13253  *
13254  * Since: 2.12
13255  **/
13256 void
13257 gtk_tree_view_convert_bin_window_to_tree_coords (GtkTreeView *tree_view,
13258                                                  gint         bx,
13259                                                  gint         by,
13260                                                  gint        *tx,
13261                                                  gint        *ty)
13262 {
13263   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
13264
13265   if (tx)
13266     *tx = bx;
13267   if (ty)
13268     *ty = by + tree_view->priv->dy;
13269 }
13270
13271
13272
13273 /**
13274  * gtk_tree_view_get_visible_range:
13275  * @tree_view: A #GtkTreeView
13276  * @start_path: (allow-none): Return location for start of region, or %NULL.
13277  * @end_path: (allow-none): Return location for end of region, or %NULL.
13278  *
13279  * Sets @start_path and @end_path to be the first and last visible path.
13280  * Note that there may be invisible paths in between.
13281  *
13282  * The paths should be freed with gtk_tree_path_free() after use.
13283  *
13284  * Returns: %TRUE, if valid paths were placed in @start_path and @end_path.
13285  *
13286  * Since: 2.8
13287  **/
13288 gboolean
13289 gtk_tree_view_get_visible_range (GtkTreeView  *tree_view,
13290                                  GtkTreePath **start_path,
13291                                  GtkTreePath **end_path)
13292 {
13293   GtkRBTree *tree;
13294   GtkRBNode *node;
13295   gboolean retval;
13296
13297   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), FALSE);
13298
13299   if (!tree_view->priv->tree)
13300     return FALSE;
13301
13302   retval = TRUE;
13303
13304   if (start_path)
13305     {
13306       _gtk_rbtree_find_offset (tree_view->priv->tree,
13307                                TREE_WINDOW_Y_TO_RBTREE_Y (tree_view, 0),
13308                                &tree, &node);
13309       if (node)
13310         *start_path = _gtk_tree_view_find_path (tree_view, tree, node);
13311       else
13312         retval = FALSE;
13313     }
13314
13315   if (end_path)
13316     {
13317       gint y;
13318
13319       if (tree_view->priv->height < tree_view->priv->vadjustment->page_size)
13320         y = tree_view->priv->height - 1;
13321       else
13322         y = TREE_WINDOW_Y_TO_RBTREE_Y (tree_view, tree_view->priv->vadjustment->page_size) - 1;
13323
13324       _gtk_rbtree_find_offset (tree_view->priv->tree, y, &tree, &node);
13325       if (node)
13326         *end_path = _gtk_tree_view_find_path (tree_view, tree, node);
13327       else
13328         retval = FALSE;
13329     }
13330
13331   return retval;
13332 }
13333
13334 static void
13335 unset_reorderable (GtkTreeView *tree_view)
13336 {
13337   if (tree_view->priv->reorderable)
13338     {
13339       tree_view->priv->reorderable = FALSE;
13340       g_object_notify (G_OBJECT (tree_view), "reorderable");
13341     }
13342 }
13343
13344 /**
13345  * gtk_tree_view_enable_model_drag_source:
13346  * @tree_view: a #GtkTreeView
13347  * @start_button_mask: Mask of allowed buttons to start drag
13348  * @targets: the table of targets that the drag will support
13349  * @n_targets: the number of items in @targets
13350  * @actions: the bitmask of possible actions for a drag from this
13351  *    widget
13352  *
13353  * Turns @tree_view into a drag source for automatic DND. Calling this
13354  * method sets #GtkTreeView:reorderable to %FALSE.
13355  **/
13356 void
13357 gtk_tree_view_enable_model_drag_source (GtkTreeView              *tree_view,
13358                                         GdkModifierType           start_button_mask,
13359                                         const GtkTargetEntry     *targets,
13360                                         gint                      n_targets,
13361                                         GdkDragAction             actions)
13362 {
13363   TreeViewDragInfo *di;
13364
13365   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
13366
13367   gtk_drag_source_set (GTK_WIDGET (tree_view),
13368                        0,
13369                        targets,
13370                        n_targets,
13371                        actions);
13372
13373   di = ensure_info (tree_view);
13374
13375   di->start_button_mask = start_button_mask;
13376   di->source_actions = actions;
13377   di->source_set = TRUE;
13378
13379   unset_reorderable (tree_view);
13380 }
13381
13382 /**
13383  * gtk_tree_view_enable_model_drag_dest:
13384  * @tree_view: a #GtkTreeView
13385  * @targets: the table of targets that the drag will support
13386  * @n_targets: the number of items in @targets
13387  * @actions: the bitmask of possible actions for a drag from this
13388  *    widget
13389  *
13390  * Turns @tree_view into a drop destination for automatic DND. Calling
13391  * this method sets #GtkTreeView:reorderable to %FALSE.
13392  **/
13393 void
13394 gtk_tree_view_enable_model_drag_dest (GtkTreeView              *tree_view,
13395                                       const GtkTargetEntry     *targets,
13396                                       gint                      n_targets,
13397                                       GdkDragAction             actions)
13398 {
13399   TreeViewDragInfo *di;
13400
13401   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
13402
13403   gtk_drag_dest_set (GTK_WIDGET (tree_view),
13404                      0,
13405                      targets,
13406                      n_targets,
13407                      actions);
13408
13409   di = ensure_info (tree_view);
13410   di->dest_set = TRUE;
13411
13412   unset_reorderable (tree_view);
13413 }
13414
13415 /**
13416  * gtk_tree_view_unset_rows_drag_source:
13417  * @tree_view: a #GtkTreeView
13418  *
13419  * Undoes the effect of
13420  * gtk_tree_view_enable_model_drag_source(). Calling this method sets
13421  * #GtkTreeView:reorderable to %FALSE.
13422  **/
13423 void
13424 gtk_tree_view_unset_rows_drag_source (GtkTreeView *tree_view)
13425 {
13426   TreeViewDragInfo *di;
13427
13428   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
13429
13430   di = get_info (tree_view);
13431
13432   if (di)
13433     {
13434       if (di->source_set)
13435         {
13436           gtk_drag_source_unset (GTK_WIDGET (tree_view));
13437           di->source_set = FALSE;
13438         }
13439
13440       if (!di->dest_set && !di->source_set)
13441         remove_info (tree_view);
13442     }
13443
13444   unset_reorderable (tree_view);
13445 }
13446
13447 /**
13448  * gtk_tree_view_unset_rows_drag_dest:
13449  * @tree_view: a #GtkTreeView
13450  *
13451  * Undoes the effect of
13452  * gtk_tree_view_enable_model_drag_dest(). Calling this method sets
13453  * #GtkTreeView:reorderable to %FALSE.
13454  **/
13455 void
13456 gtk_tree_view_unset_rows_drag_dest (GtkTreeView *tree_view)
13457 {
13458   TreeViewDragInfo *di;
13459
13460   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
13461
13462   di = get_info (tree_view);
13463
13464   if (di)
13465     {
13466       if (di->dest_set)
13467         {
13468           gtk_drag_dest_unset (GTK_WIDGET (tree_view));
13469           di->dest_set = FALSE;
13470         }
13471
13472       if (!di->dest_set && !di->source_set)
13473         remove_info (tree_view);
13474     }
13475
13476   unset_reorderable (tree_view);
13477 }
13478
13479 /**
13480  * gtk_tree_view_set_drag_dest_row:
13481  * @tree_view: a #GtkTreeView
13482  * @path: (allow-none): The path of the row to highlight, or %NULL.
13483  * @pos: Specifies whether to drop before, after or into the row
13484  *
13485  * Sets the row that is highlighted for feedback.
13486  **/
13487 void
13488 gtk_tree_view_set_drag_dest_row (GtkTreeView            *tree_view,
13489                                  GtkTreePath            *path,
13490                                  GtkTreeViewDropPosition pos)
13491 {
13492   GtkTreePath *current_dest;
13493
13494   /* Note; this function is exported to allow a custom DND
13495    * implementation, so it can't touch TreeViewDragInfo
13496    */
13497
13498   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
13499
13500   current_dest = NULL;
13501
13502   if (tree_view->priv->drag_dest_row)
13503     {
13504       current_dest = gtk_tree_row_reference_get_path (tree_view->priv->drag_dest_row);
13505       gtk_tree_row_reference_free (tree_view->priv->drag_dest_row);
13506     }
13507
13508   /* special case a drop on an empty model */
13509   tree_view->priv->empty_view_drop = 0;
13510
13511   if (pos == GTK_TREE_VIEW_DROP_BEFORE && path
13512       && gtk_tree_path_get_depth (path) == 1
13513       && gtk_tree_path_get_indices (path)[0] == 0)
13514     {
13515       gint n_children;
13516
13517       n_children = gtk_tree_model_iter_n_children (tree_view->priv->model,
13518                                                    NULL);
13519
13520       if (!n_children)
13521         tree_view->priv->empty_view_drop = 1;
13522     }
13523
13524   tree_view->priv->drag_dest_pos = pos;
13525
13526   if (path)
13527     {
13528       tree_view->priv->drag_dest_row =
13529         gtk_tree_row_reference_new_proxy (G_OBJECT (tree_view), tree_view->priv->model, path);
13530       gtk_tree_view_queue_draw_path (tree_view, path, NULL);
13531     }
13532   else
13533     tree_view->priv->drag_dest_row = NULL;
13534
13535   if (current_dest)
13536     {
13537       GtkRBTree *tree, *new_tree;
13538       GtkRBNode *node, *new_node;
13539
13540       _gtk_tree_view_find_node (tree_view, current_dest, &tree, &node);
13541       _gtk_tree_view_queue_draw_node (tree_view, tree, node, NULL);
13542
13543       if (tree && node)
13544         {
13545           _gtk_rbtree_next_full (tree, node, &new_tree, &new_node);
13546           if (new_tree && new_node)
13547             _gtk_tree_view_queue_draw_node (tree_view, new_tree, new_node, NULL);
13548
13549           _gtk_rbtree_prev_full (tree, node, &new_tree, &new_node);
13550           if (new_tree && new_node)
13551             _gtk_tree_view_queue_draw_node (tree_view, new_tree, new_node, NULL);
13552         }
13553       gtk_tree_path_free (current_dest);
13554     }
13555 }
13556
13557 /**
13558  * gtk_tree_view_get_drag_dest_row:
13559  * @tree_view: a #GtkTreeView
13560  * @path: (allow-none): Return location for the path of the highlighted row, or %NULL.
13561  * @pos: (allow-none): Return location for the drop position, or %NULL
13562  *
13563  * Gets information about the row that is highlighted for feedback.
13564  **/
13565 void
13566 gtk_tree_view_get_drag_dest_row (GtkTreeView              *tree_view,
13567                                  GtkTreePath             **path,
13568                                  GtkTreeViewDropPosition  *pos)
13569 {
13570   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
13571
13572   if (path)
13573     {
13574       if (tree_view->priv->drag_dest_row)
13575         *path = gtk_tree_row_reference_get_path (tree_view->priv->drag_dest_row);
13576       else
13577         {
13578           if (tree_view->priv->empty_view_drop)
13579             *path = gtk_tree_path_new_from_indices (0, -1);
13580           else
13581             *path = NULL;
13582         }
13583     }
13584
13585   if (pos)
13586     *pos = tree_view->priv->drag_dest_pos;
13587 }
13588
13589 /**
13590  * gtk_tree_view_get_dest_row_at_pos:
13591  * @tree_view: a #GtkTreeView
13592  * @drag_x: the position to determine the destination row for
13593  * @drag_y: the position to determine the destination row for
13594  * @path: (allow-none): Return location for the path of the highlighted row, or %NULL.
13595  * @pos: (allow-none): Return location for the drop position, or %NULL
13596  *
13597  * Determines the destination row for a given position.  @drag_x and
13598  * @drag_y are expected to be in widget coordinates.  This function is only
13599  * meaningful if @tree_view is realized.  Therefore this function will always
13600  * return %FALSE if @tree_view is not realized or does not have a model.
13601  *
13602  * Return value: whether there is a row at the given position, %TRUE if this
13603  * is indeed the case.
13604  **/
13605 gboolean
13606 gtk_tree_view_get_dest_row_at_pos (GtkTreeView             *tree_view,
13607                                    gint                     drag_x,
13608                                    gint                     drag_y,
13609                                    GtkTreePath            **path,
13610                                    GtkTreeViewDropPosition *pos)
13611 {
13612   gint cell_y;
13613   gint bin_x, bin_y;
13614   gdouble offset_into_row;
13615   gdouble third;
13616   GdkRectangle cell;
13617   GtkTreeViewColumn *column = NULL;
13618   GtkTreePath *tmp_path = NULL;
13619
13620   /* Note; this function is exported to allow a custom DND
13621    * implementation, so it can't touch TreeViewDragInfo
13622    */
13623
13624   g_return_val_if_fail (tree_view != NULL, FALSE);
13625   g_return_val_if_fail (drag_x >= 0, FALSE);
13626   g_return_val_if_fail (drag_y >= 0, FALSE);
13627
13628   if (path)
13629     *path = NULL;
13630
13631   if (tree_view->priv->bin_window == NULL)
13632     return FALSE;
13633
13634   if (tree_view->priv->tree == NULL)
13635     return FALSE;
13636
13637   /* If in the top third of a row, we drop before that row; if
13638    * in the bottom third, drop after that row; if in the middle,
13639    * and the row has children, drop into the row.
13640    */
13641   gtk_tree_view_convert_widget_to_bin_window_coords (tree_view, drag_x, drag_y,
13642                                                      &bin_x, &bin_y);
13643
13644   if (!gtk_tree_view_get_path_at_pos (tree_view,
13645                                       bin_x,
13646                                       bin_y,
13647                                       &tmp_path,
13648                                       &column,
13649                                       NULL,
13650                                       &cell_y))
13651     return FALSE;
13652
13653   gtk_tree_view_get_background_area (tree_view, tmp_path, column,
13654                                      &cell);
13655
13656   offset_into_row = cell_y;
13657
13658   if (path)
13659     *path = tmp_path;
13660   else
13661     gtk_tree_path_free (tmp_path);
13662
13663   tmp_path = NULL;
13664
13665   third = cell.height / 3.0;
13666
13667   if (pos)
13668     {
13669       if (offset_into_row < third)
13670         {
13671           *pos = GTK_TREE_VIEW_DROP_BEFORE;
13672         }
13673       else if (offset_into_row < (cell.height / 2.0))
13674         {
13675           *pos = GTK_TREE_VIEW_DROP_INTO_OR_BEFORE;
13676         }
13677       else if (offset_into_row < third * 2.0)
13678         {
13679           *pos = GTK_TREE_VIEW_DROP_INTO_OR_AFTER;
13680         }
13681       else
13682         {
13683           *pos = GTK_TREE_VIEW_DROP_AFTER;
13684         }
13685     }
13686
13687   return TRUE;
13688 }
13689
13690
13691
13692 /* KEEP IN SYNC WITH GTK_TREE_VIEW_BIN_EXPOSE */
13693 /**
13694  * gtk_tree_view_create_row_drag_icon:
13695  * @tree_view: a #GtkTreeView
13696  * @path: a #GtkTreePath in @tree_view
13697  *
13698  * Creates a #GdkPixmap representation of the row at @path.
13699  * This image is used for a drag icon.
13700  *
13701  * Return value: a newly-allocated pixmap of the drag icon.
13702  **/
13703 GdkPixmap *
13704 gtk_tree_view_create_row_drag_icon (GtkTreeView  *tree_view,
13705                                     GtkTreePath  *path)
13706 {
13707   GtkTreeIter   iter;
13708   GtkRBTree    *tree;
13709   GtkRBNode    *node;
13710   gint cell_offset;
13711   GList *list;
13712   GdkRectangle background_area;
13713   GdkRectangle expose_area;
13714   GtkWidget *widget;
13715   gint depth;
13716   /* start drawing inside the black outline */
13717   gint x = 1, y = 1;
13718   GdkDrawable *drawable;
13719   gint bin_window_width;
13720   gboolean is_separator = FALSE;
13721   gboolean rtl;
13722
13723   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), NULL);
13724   g_return_val_if_fail (path != NULL, NULL);
13725
13726   widget = GTK_WIDGET (tree_view);
13727
13728   if (!gtk_widget_get_realized (widget))
13729     return NULL;
13730
13731   depth = gtk_tree_path_get_depth (path);
13732
13733   _gtk_tree_view_find_node (tree_view,
13734                             path,
13735                             &tree,
13736                             &node);
13737
13738   if (tree == NULL)
13739     return NULL;
13740
13741   if (!gtk_tree_model_get_iter (tree_view->priv->model,
13742                                 &iter,
13743                                 path))
13744     return NULL;
13745
13746   is_separator = row_is_separator (tree_view, &iter, NULL);
13747
13748   cell_offset = x;
13749
13750   background_area.y = y;
13751   background_area.height = ROW_HEIGHT (tree_view, BACKGROUND_HEIGHT (node));
13752
13753   gdk_drawable_get_size (tree_view->priv->bin_window,
13754                          &bin_window_width, NULL);
13755
13756   drawable = gdk_pixmap_new (tree_view->priv->bin_window,
13757                              bin_window_width + 2,
13758                              background_area.height + 2,
13759                              -1);
13760
13761   expose_area.x = 0;
13762   expose_area.y = 0;
13763   expose_area.width = bin_window_width + 2;
13764   expose_area.height = background_area.height + 2;
13765
13766   gdk_draw_rectangle (drawable,
13767                       widget->style->base_gc [gtk_widget_get_state (widget)],
13768                       TRUE,
13769                       0, 0,
13770                       bin_window_width + 2,
13771                       background_area.height + 2);
13772
13773   rtl = gtk_widget_get_direction (GTK_WIDGET (tree_view)) == GTK_TEXT_DIR_RTL;
13774
13775   for (list = (rtl ? g_list_last (tree_view->priv->columns) : g_list_first (tree_view->priv->columns));
13776       list;
13777       list = (rtl ? list->prev : list->next))
13778     {
13779       GtkTreeViewColumn *column = list->data;
13780       GdkRectangle cell_area;
13781       gint vertical_separator;
13782
13783       if (!column->visible)
13784         continue;
13785
13786       gtk_tree_view_column_cell_set_cell_data (column, tree_view->priv->model, &iter,
13787                                                GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_PARENT),
13788                                                node->children?TRUE:FALSE);
13789
13790       background_area.x = cell_offset;
13791       background_area.width = column->width;
13792
13793       gtk_widget_style_get (widget,
13794                             "vertical-separator", &vertical_separator,
13795                             NULL);
13796
13797       cell_area = background_area;
13798
13799       cell_area.y += vertical_separator / 2;
13800       cell_area.height -= vertical_separator;
13801
13802       if (gtk_tree_view_is_expander_column (tree_view, column))
13803         {
13804           if (!rtl)
13805             cell_area.x += (depth - 1) * tree_view->priv->level_indentation;
13806           cell_area.width -= (depth - 1) * tree_view->priv->level_indentation;
13807
13808           if (TREE_VIEW_DRAW_EXPANDERS(tree_view))
13809             {
13810               if (!rtl)
13811                 cell_area.x += depth * tree_view->priv->expander_size;
13812               cell_area.width -= depth * tree_view->priv->expander_size;
13813             }
13814         }
13815
13816       if (gtk_tree_view_column_cell_is_visible (column))
13817         {
13818           if (is_separator)
13819             gtk_paint_hline (widget->style,
13820                              drawable,
13821                              GTK_STATE_NORMAL,
13822                              &cell_area,
13823                              widget,
13824                              NULL,
13825                              cell_area.x,
13826                              cell_area.x + cell_area.width,
13827                              cell_area.y + cell_area.height / 2);
13828           else
13829             _gtk_tree_view_column_cell_render (column,
13830                                                drawable,
13831                                                &background_area,
13832                                                &cell_area,
13833                                                &expose_area,
13834                                                0);
13835         }
13836       cell_offset += column->width;
13837     }
13838
13839   gdk_draw_rectangle (drawable,
13840                       widget->style->black_gc,
13841                       FALSE,
13842                       0, 0,
13843                       bin_window_width + 1,
13844                       background_area.height + 1);
13845
13846   return drawable;
13847 }
13848
13849
13850 /**
13851  * gtk_tree_view_set_destroy_count_func:
13852  * @tree_view: A #GtkTreeView
13853  * @func: (allow-none): Function to be called when a view row is destroyed, or %NULL
13854  * @data: (allow-none): User data to be passed to @func, or %NULL
13855  * @destroy: (allow-none): Destroy notifier for @data, or %NULL
13856  *
13857  * This function should almost never be used.  It is meant for private use by
13858  * ATK for determining the number of visible children that are removed when the
13859  * user collapses a row, or a row is deleted.
13860  **/
13861 void
13862 gtk_tree_view_set_destroy_count_func (GtkTreeView             *tree_view,
13863                                       GtkTreeDestroyCountFunc  func,
13864                                       gpointer                 data,
13865                                       GDestroyNotify           destroy)
13866 {
13867   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
13868
13869   if (tree_view->priv->destroy_count_destroy)
13870     tree_view->priv->destroy_count_destroy (tree_view->priv->destroy_count_data);
13871
13872   tree_view->priv->destroy_count_func = func;
13873   tree_view->priv->destroy_count_data = data;
13874   tree_view->priv->destroy_count_destroy = destroy;
13875 }
13876
13877
13878 /*
13879  * Interactive search
13880  */
13881
13882 /**
13883  * gtk_tree_view_set_enable_search:
13884  * @tree_view: A #GtkTreeView
13885  * @enable_search: %TRUE, if the user can search interactively
13886  *
13887  * If @enable_search is set, then the user can type in text to search through
13888  * the tree interactively (this is sometimes called "typeahead find").
13889  *
13890  * Note that even if this is %FALSE, the user can still initiate a search
13891  * using the "start-interactive-search" key binding.
13892  */
13893 void
13894 gtk_tree_view_set_enable_search (GtkTreeView *tree_view,
13895                                  gboolean     enable_search)
13896 {
13897   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
13898
13899   enable_search = !!enable_search;
13900
13901   if (tree_view->priv->enable_search != enable_search)
13902     {
13903        tree_view->priv->enable_search = enable_search;
13904        g_object_notify (G_OBJECT (tree_view), "enable-search");
13905     }
13906 }
13907
13908 /**
13909  * gtk_tree_view_get_enable_search:
13910  * @tree_view: A #GtkTreeView
13911  *
13912  * Returns whether or not the tree allows to start interactive searching
13913  * by typing in text.
13914  *
13915  * Return value: whether or not to let the user search interactively
13916  */
13917 gboolean
13918 gtk_tree_view_get_enable_search (GtkTreeView *tree_view)
13919 {
13920   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), FALSE);
13921
13922   return tree_view->priv->enable_search;
13923 }
13924
13925
13926 /**
13927  * gtk_tree_view_get_search_column:
13928  * @tree_view: A #GtkTreeView
13929  *
13930  * Gets the column searched on by the interactive search code.
13931  *
13932  * Return value: the column the interactive search code searches in.
13933  */
13934 gint
13935 gtk_tree_view_get_search_column (GtkTreeView *tree_view)
13936 {
13937   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), -1);
13938
13939   return (tree_view->priv->search_column);
13940 }
13941
13942 /**
13943  * gtk_tree_view_set_search_column:
13944  * @tree_view: A #GtkTreeView
13945  * @column: the column of the model to search in, or -1 to disable searching
13946  *
13947  * Sets @column as the column where the interactive search code should
13948  * search in for the current model.
13949  *
13950  * If the search column is set, users can use the "start-interactive-search"
13951  * key binding to bring up search popup. The enable-search property controls
13952  * whether simply typing text will also start an interactive search.
13953  *
13954  * Note that @column refers to a column of the current model. The search
13955  * column is reset to -1 when the model is changed.
13956  */
13957 void
13958 gtk_tree_view_set_search_column (GtkTreeView *tree_view,
13959                                  gint         column)
13960 {
13961   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
13962   g_return_if_fail (column >= -1);
13963
13964   if (tree_view->priv->search_column == column)
13965     return;
13966
13967   tree_view->priv->search_column = column;
13968   g_object_notify (G_OBJECT (tree_view), "search-column");
13969 }
13970
13971 /**
13972  * gtk_tree_view_get_search_equal_func:
13973  * @tree_view: A #GtkTreeView
13974  *
13975  * Returns the compare function currently in use.
13976  *
13977  * Return value: the currently used compare function for the search code.
13978  */
13979
13980 GtkTreeViewSearchEqualFunc
13981 gtk_tree_view_get_search_equal_func (GtkTreeView *tree_view)
13982 {
13983   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), NULL);
13984
13985   return tree_view->priv->search_equal_func;
13986 }
13987
13988 /**
13989  * gtk_tree_view_set_search_equal_func:
13990  * @tree_view: A #GtkTreeView
13991  * @search_equal_func: the compare function to use during the search
13992  * @search_user_data: (allow-none): user data to pass to @search_equal_func, or %NULL
13993  * @search_destroy: (allow-none): Destroy notifier for @search_user_data, or %NULL
13994  *
13995  * Sets the compare function for the interactive search capabilities; note
13996  * that somewhat like strcmp() returning 0 for equality
13997  * #GtkTreeViewSearchEqualFunc returns %FALSE on matches.
13998  **/
13999 void
14000 gtk_tree_view_set_search_equal_func (GtkTreeView                *tree_view,
14001                                      GtkTreeViewSearchEqualFunc  search_equal_func,
14002                                      gpointer                    search_user_data,
14003                                      GDestroyNotify              search_destroy)
14004 {
14005   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
14006   g_return_if_fail (search_equal_func != NULL);
14007
14008   if (tree_view->priv->search_destroy)
14009     tree_view->priv->search_destroy (tree_view->priv->search_user_data);
14010
14011   tree_view->priv->search_equal_func = search_equal_func;
14012   tree_view->priv->search_user_data = search_user_data;
14013   tree_view->priv->search_destroy = search_destroy;
14014   if (tree_view->priv->search_equal_func == NULL)
14015     tree_view->priv->search_equal_func = gtk_tree_view_search_equal_func;
14016 }
14017
14018 /**
14019  * gtk_tree_view_get_search_entry:
14020  * @tree_view: A #GtkTreeView
14021  *
14022  * Returns the #GtkEntry which is currently in use as interactive search
14023  * entry for @tree_view.  In case the built-in entry is being used, %NULL
14024  * will be returned.
14025  *
14026  * Return value: the entry currently in use as search entry.
14027  *
14028  * Since: 2.10
14029  */
14030 GtkEntry *
14031 gtk_tree_view_get_search_entry (GtkTreeView *tree_view)
14032 {
14033   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), NULL);
14034
14035   if (tree_view->priv->search_custom_entry_set)
14036     return GTK_ENTRY (tree_view->priv->search_entry);
14037
14038   return NULL;
14039 }
14040
14041 /**
14042  * gtk_tree_view_set_search_entry:
14043  * @tree_view: A #GtkTreeView
14044  * @entry: (allow-none): the entry the interactive search code of @tree_view should use or %NULL
14045  *
14046  * Sets the entry which the interactive search code will use for this
14047  * @tree_view.  This is useful when you want to provide a search entry
14048  * in our interface at all time at a fixed position.  Passing %NULL for
14049  * @entry will make the interactive search code use the built-in popup
14050  * entry again.
14051  *
14052  * Since: 2.10
14053  */
14054 void
14055 gtk_tree_view_set_search_entry (GtkTreeView *tree_view,
14056                                 GtkEntry    *entry)
14057 {
14058   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
14059   g_return_if_fail (entry == NULL || GTK_IS_ENTRY (entry));
14060
14061   if (tree_view->priv->search_custom_entry_set)
14062     {
14063       if (tree_view->priv->search_entry_changed_id)
14064         {
14065           g_signal_handler_disconnect (tree_view->priv->search_entry,
14066                                        tree_view->priv->search_entry_changed_id);
14067           tree_view->priv->search_entry_changed_id = 0;
14068         }
14069       g_signal_handlers_disconnect_by_func (tree_view->priv->search_entry,
14070                                             G_CALLBACK (gtk_tree_view_search_key_press_event),
14071                                             tree_view);
14072
14073       g_object_unref (tree_view->priv->search_entry);
14074     }
14075   else if (tree_view->priv->search_window)
14076     {
14077       gtk_widget_destroy (tree_view->priv->search_window);
14078
14079       tree_view->priv->search_window = NULL;
14080     }
14081
14082   if (entry)
14083     {
14084       tree_view->priv->search_entry = g_object_ref (entry);
14085       tree_view->priv->search_custom_entry_set = TRUE;
14086
14087       if (tree_view->priv->search_entry_changed_id == 0)
14088         {
14089           tree_view->priv->search_entry_changed_id =
14090             g_signal_connect (tree_view->priv->search_entry, "changed",
14091                               G_CALLBACK (gtk_tree_view_search_init),
14092                               tree_view);
14093         }
14094
14095         g_signal_connect (tree_view->priv->search_entry, "key-press-event",
14096                           G_CALLBACK (gtk_tree_view_search_key_press_event),
14097                           tree_view);
14098
14099         gtk_tree_view_search_init (tree_view->priv->search_entry, tree_view);
14100     }
14101   else
14102     {
14103       tree_view->priv->search_entry = NULL;
14104       tree_view->priv->search_custom_entry_set = FALSE;
14105     }
14106 }
14107
14108 /**
14109  * gtk_tree_view_set_search_position_func:
14110  * @tree_view: A #GtkTreeView
14111  * @func: (allow-none): the function to use to position the search dialog, or %NULL
14112  *    to use the default search position function
14113  * @data: (allow-none): user data to pass to @func, or %NULL
14114  * @destroy: (allow-none): Destroy notifier for @data, or %NULL
14115  *
14116  * Sets the function to use when positioning the search dialog.
14117  *
14118  * Since: 2.10
14119  **/
14120 void
14121 gtk_tree_view_set_search_position_func (GtkTreeView                   *tree_view,
14122                                         GtkTreeViewSearchPositionFunc  func,
14123                                         gpointer                       user_data,
14124                                         GDestroyNotify                 destroy)
14125 {
14126   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
14127
14128   if (tree_view->priv->search_position_destroy)
14129     tree_view->priv->search_position_destroy (tree_view->priv->search_position_user_data);
14130
14131   tree_view->priv->search_position_func = func;
14132   tree_view->priv->search_position_user_data = user_data;
14133   tree_view->priv->search_position_destroy = destroy;
14134   if (tree_view->priv->search_position_func == NULL)
14135     tree_view->priv->search_position_func = gtk_tree_view_search_position_func;
14136 }
14137
14138 /**
14139  * gtk_tree_view_get_search_position_func:
14140  * @tree_view: A #GtkTreeView
14141  *
14142  * Returns the positioning function currently in use.
14143  *
14144  * Return value: the currently used function for positioning the search dialog.
14145  *
14146  * Since: 2.10
14147  */
14148 GtkTreeViewSearchPositionFunc
14149 gtk_tree_view_get_search_position_func (GtkTreeView *tree_view)
14150 {
14151   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), NULL);
14152
14153   return tree_view->priv->search_position_func;
14154 }
14155
14156
14157 static void
14158 gtk_tree_view_search_dialog_hide (GtkWidget   *search_dialog,
14159                                   GtkTreeView *tree_view)
14160 {
14161   if (tree_view->priv->disable_popdown)
14162     return;
14163
14164   if (tree_view->priv->search_entry_changed_id)
14165     {
14166       g_signal_handler_disconnect (tree_view->priv->search_entry,
14167                                    tree_view->priv->search_entry_changed_id);
14168       tree_view->priv->search_entry_changed_id = 0;
14169     }
14170   if (tree_view->priv->typeselect_flush_timeout)
14171     {
14172       g_source_remove (tree_view->priv->typeselect_flush_timeout);
14173       tree_view->priv->typeselect_flush_timeout = 0;
14174     }
14175
14176   if (gtk_widget_get_visible (search_dialog))
14177     {
14178       /* send focus-in event */
14179       send_focus_change (GTK_WIDGET (tree_view->priv->search_entry), FALSE);
14180       gtk_widget_hide (search_dialog);
14181       gtk_entry_set_text (GTK_ENTRY (tree_view->priv->search_entry), "");
14182       send_focus_change (GTK_WIDGET (tree_view), TRUE);
14183     }
14184 }
14185
14186 static void
14187 gtk_tree_view_search_position_func (GtkTreeView *tree_view,
14188                                     GtkWidget   *search_dialog,
14189                                     gpointer     user_data)
14190 {
14191   gint x, y;
14192   gint tree_x, tree_y;
14193   gint tree_width, tree_height;
14194   GdkWindow *tree_window = GTK_WIDGET (tree_view)->window;
14195   GdkScreen *screen = gdk_drawable_get_screen (tree_window);
14196   GtkRequisition requisition;
14197   gint monitor_num;
14198   GdkRectangle monitor;
14199
14200   monitor_num = gdk_screen_get_monitor_at_window (screen, tree_window);
14201   gdk_screen_get_monitor_geometry (screen, monitor_num, &monitor);
14202
14203   gtk_widget_realize (search_dialog);
14204
14205   gdk_window_get_origin (tree_window, &tree_x, &tree_y);
14206   gdk_drawable_get_size (tree_window,
14207                          &tree_width,
14208                          &tree_height);
14209   gtk_widget_size_request (search_dialog, &requisition);
14210
14211   if (tree_x + tree_width > gdk_screen_get_width (screen))
14212     x = gdk_screen_get_width (screen) - requisition.width;
14213   else if (tree_x + tree_width - requisition.width < 0)
14214     x = 0;
14215   else
14216     x = tree_x + tree_width - requisition.width;
14217
14218   if (tree_y + tree_height + requisition.height > gdk_screen_get_height (screen))
14219     y = gdk_screen_get_height (screen) - requisition.height;
14220   else if (tree_y + tree_height < 0) /* isn't really possible ... */
14221     y = 0;
14222   else
14223     y = tree_y + tree_height;
14224
14225   gtk_window_move (GTK_WINDOW (search_dialog), x, y);
14226 }
14227
14228 static void
14229 gtk_tree_view_search_disable_popdown (GtkEntry *entry,
14230                                       GtkMenu  *menu,
14231                                       gpointer  data)
14232 {
14233   GtkTreeView *tree_view = (GtkTreeView *)data;
14234
14235   tree_view->priv->disable_popdown = 1;
14236   g_signal_connect (menu, "hide",
14237                     G_CALLBACK (gtk_tree_view_search_enable_popdown), data);
14238 }
14239
14240 /* Because we're visible but offscreen, we just set a flag in the preedit
14241  * callback.
14242  */
14243 static void
14244 gtk_tree_view_search_preedit_changed (GtkIMContext *im_context,
14245                                       GtkTreeView  *tree_view)
14246 {
14247   tree_view->priv->imcontext_changed = 1;
14248   if (tree_view->priv->typeselect_flush_timeout)
14249     {
14250       g_source_remove (tree_view->priv->typeselect_flush_timeout);
14251       tree_view->priv->typeselect_flush_timeout =
14252         gdk_threads_add_timeout (GTK_TREE_VIEW_SEARCH_DIALOG_TIMEOUT,
14253                        (GSourceFunc) gtk_tree_view_search_entry_flush_timeout,
14254                        tree_view);
14255     }
14256
14257 }
14258
14259 static void
14260 gtk_tree_view_search_activate (GtkEntry    *entry,
14261                                GtkTreeView *tree_view)
14262 {
14263   GtkTreePath *path;
14264   GtkRBNode *node;
14265   GtkRBTree *tree;
14266
14267   gtk_tree_view_search_dialog_hide (tree_view->priv->search_window,
14268                                     tree_view);
14269
14270   /* If we have a row selected and it's the cursor row, we activate
14271    * the row XXX */
14272   if (gtk_tree_row_reference_valid (tree_view->priv->cursor))
14273     {
14274       path = gtk_tree_row_reference_get_path (tree_view->priv->cursor);
14275
14276       _gtk_tree_view_find_node (tree_view, path, &tree, &node);
14277
14278       if (node && GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_SELECTED))
14279         gtk_tree_view_row_activated (tree_view, path, tree_view->priv->focus_column);
14280
14281       gtk_tree_path_free (path);
14282     }
14283 }
14284
14285 static gboolean
14286 gtk_tree_view_real_search_enable_popdown (gpointer data)
14287 {
14288   GtkTreeView *tree_view = (GtkTreeView *)data;
14289
14290   tree_view->priv->disable_popdown = 0;
14291
14292   return FALSE;
14293 }
14294
14295 static void
14296 gtk_tree_view_search_enable_popdown (GtkWidget *widget,
14297                                      gpointer   data)
14298 {
14299   gdk_threads_add_timeout_full (G_PRIORITY_HIGH, 200, gtk_tree_view_real_search_enable_popdown, g_object_ref (data), g_object_unref);
14300 }
14301
14302 static gboolean
14303 gtk_tree_view_search_delete_event (GtkWidget *widget,
14304                                    GdkEventAny *event,
14305                                    GtkTreeView *tree_view)
14306 {
14307   g_return_val_if_fail (GTK_IS_WIDGET (widget), FALSE);
14308
14309   gtk_tree_view_search_dialog_hide (widget, tree_view);
14310
14311   return TRUE;
14312 }
14313
14314 static gboolean
14315 gtk_tree_view_search_button_press_event (GtkWidget *widget,
14316                                          GdkEventButton *event,
14317                                          GtkTreeView *tree_view)
14318 {
14319   g_return_val_if_fail (GTK_IS_WIDGET (widget), FALSE);
14320
14321   gtk_tree_view_search_dialog_hide (widget, tree_view);
14322
14323   if (event->window == tree_view->priv->bin_window)
14324     gtk_tree_view_button_press (GTK_WIDGET (tree_view), event);
14325
14326   return TRUE;
14327 }
14328
14329 static gboolean
14330 gtk_tree_view_search_scroll_event (GtkWidget *widget,
14331                                    GdkEventScroll *event,
14332                                    GtkTreeView *tree_view)
14333 {
14334   gboolean retval = FALSE;
14335
14336   if (event->direction == GDK_SCROLL_UP)
14337     {
14338       gtk_tree_view_search_move (widget, tree_view, TRUE);
14339       retval = TRUE;
14340     }
14341   else if (event->direction == GDK_SCROLL_DOWN)
14342     {
14343       gtk_tree_view_search_move (widget, tree_view, FALSE);
14344       retval = TRUE;
14345     }
14346
14347   /* renew the flush timeout */
14348   if (retval && tree_view->priv->typeselect_flush_timeout
14349       && !tree_view->priv->search_custom_entry_set)
14350     {
14351       g_source_remove (tree_view->priv->typeselect_flush_timeout);
14352       tree_view->priv->typeselect_flush_timeout =
14353         gdk_threads_add_timeout (GTK_TREE_VIEW_SEARCH_DIALOG_TIMEOUT,
14354                        (GSourceFunc) gtk_tree_view_search_entry_flush_timeout,
14355                        tree_view);
14356     }
14357
14358   return retval;
14359 }
14360
14361 static gboolean
14362 gtk_tree_view_search_key_press_event (GtkWidget *widget,
14363                                       GdkEventKey *event,
14364                                       GtkTreeView *tree_view)
14365 {
14366   gboolean retval = FALSE;
14367
14368   g_return_val_if_fail (GTK_IS_WIDGET (widget), FALSE);
14369   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), FALSE);
14370
14371   /* close window and cancel the search */
14372   if (!tree_view->priv->search_custom_entry_set
14373       && (event->keyval == GDK_Escape ||
14374           event->keyval == GDK_Tab ||
14375             event->keyval == GDK_KP_Tab ||
14376             event->keyval == GDK_ISO_Left_Tab))
14377     {
14378       gtk_tree_view_search_dialog_hide (widget, tree_view);
14379       return TRUE;
14380     }
14381
14382   /* select previous matching iter */
14383   if (event->keyval == GDK_Up || event->keyval == GDK_KP_Up)
14384     {
14385       if (!gtk_tree_view_search_move (widget, tree_view, TRUE))
14386         gtk_widget_error_bell (widget);
14387
14388       retval = TRUE;
14389     }
14390
14391   if (((event->state & (GTK_DEFAULT_ACCEL_MOD_MASK | GDK_SHIFT_MASK)) == (GTK_DEFAULT_ACCEL_MOD_MASK | GDK_SHIFT_MASK))
14392       && (event->keyval == GDK_g || event->keyval == GDK_G))
14393     {
14394       if (!gtk_tree_view_search_move (widget, tree_view, TRUE))
14395         gtk_widget_error_bell (widget);
14396
14397       retval = TRUE;
14398     }
14399
14400   /* select next matching iter */
14401   if (event->keyval == GDK_Down || event->keyval == GDK_KP_Down)
14402     {
14403       if (!gtk_tree_view_search_move (widget, tree_view, FALSE))
14404         gtk_widget_error_bell (widget);
14405
14406       retval = TRUE;
14407     }
14408
14409   if (((event->state & (GTK_DEFAULT_ACCEL_MOD_MASK | GDK_SHIFT_MASK)) == GTK_DEFAULT_ACCEL_MOD_MASK)
14410       && (event->keyval == GDK_g || event->keyval == GDK_G))
14411     {
14412       if (!gtk_tree_view_search_move (widget, tree_view, FALSE))
14413         gtk_widget_error_bell (widget);
14414
14415       retval = TRUE;
14416     }
14417
14418   /* renew the flush timeout */
14419   if (retval && tree_view->priv->typeselect_flush_timeout
14420       && !tree_view->priv->search_custom_entry_set)
14421     {
14422       g_source_remove (tree_view->priv->typeselect_flush_timeout);
14423       tree_view->priv->typeselect_flush_timeout =
14424         gdk_threads_add_timeout (GTK_TREE_VIEW_SEARCH_DIALOG_TIMEOUT,
14425                        (GSourceFunc) gtk_tree_view_search_entry_flush_timeout,
14426                        tree_view);
14427     }
14428
14429   return retval;
14430 }
14431
14432 /*  this function returns FALSE if there is a search string but
14433  *  nothing was found, and TRUE otherwise.
14434  */
14435 static gboolean
14436 gtk_tree_view_search_move (GtkWidget   *window,
14437                            GtkTreeView *tree_view,
14438                            gboolean     up)
14439 {
14440   gboolean ret;
14441   gint len;
14442   gint count = 0;
14443   const gchar *text;
14444   GtkTreeIter iter;
14445   GtkTreeModel *model;
14446   GtkTreeSelection *selection;
14447
14448   text = gtk_entry_get_text (GTK_ENTRY (tree_view->priv->search_entry));
14449
14450   g_return_val_if_fail (text != NULL, FALSE);
14451
14452   len = strlen (text);
14453
14454   if (up && tree_view->priv->selected_iter == 1)
14455     return strlen (text) < 1;
14456
14457   len = strlen (text);
14458
14459   if (len < 1)
14460     return TRUE;
14461
14462   model = gtk_tree_view_get_model (tree_view);
14463   selection = gtk_tree_view_get_selection (tree_view);
14464
14465   /* search */
14466   gtk_tree_selection_unselect_all (selection);
14467   if (!gtk_tree_model_get_iter_first (model, &iter))
14468     return TRUE;
14469
14470   ret = gtk_tree_view_search_iter (model, selection, &iter, text,
14471                                    &count, up?((tree_view->priv->selected_iter) - 1):((tree_view->priv->selected_iter + 1)));
14472
14473   if (ret)
14474     {
14475       /* found */
14476       tree_view->priv->selected_iter += up?(-1):(1);
14477       return TRUE;
14478     }
14479   else
14480     {
14481       /* return to old iter */
14482       count = 0;
14483       gtk_tree_model_get_iter_first (model, &iter);
14484       gtk_tree_view_search_iter (model, selection,
14485                                  &iter, text,
14486                                  &count, tree_view->priv->selected_iter);
14487       return FALSE;
14488     }
14489 }
14490
14491 static gboolean
14492 gtk_tree_view_search_equal_func (GtkTreeModel *model,
14493                                  gint          column,
14494                                  const gchar  *key,
14495                                  GtkTreeIter  *iter,
14496                                  gpointer      search_data)
14497 {
14498   gboolean retval = TRUE;
14499   const gchar *str;
14500   gchar *normalized_string;
14501   gchar *normalized_key;
14502   gchar *case_normalized_string = NULL;
14503   gchar *case_normalized_key = NULL;
14504   GValue value = {0,};
14505   GValue transformed = {0,};
14506
14507   gtk_tree_model_get_value (model, iter, column, &value);
14508
14509   g_value_init (&transformed, G_TYPE_STRING);
14510
14511   if (!g_value_transform (&value, &transformed))
14512     {
14513       g_value_unset (&value);
14514       return TRUE;
14515     }
14516
14517   g_value_unset (&value);
14518
14519   str = g_value_get_string (&transformed);
14520   if (!str)
14521     {
14522       g_value_unset (&transformed);
14523       return TRUE;
14524     }
14525
14526   normalized_string = g_utf8_normalize (str, -1, G_NORMALIZE_ALL);
14527   normalized_key = g_utf8_normalize (key, -1, G_NORMALIZE_ALL);
14528
14529   if (normalized_string && normalized_key)
14530     {
14531       case_normalized_string = g_utf8_casefold (normalized_string, -1);
14532       case_normalized_key = g_utf8_casefold (normalized_key, -1);
14533
14534       if (strncmp (case_normalized_key, case_normalized_string, strlen (case_normalized_key)) == 0)
14535         retval = FALSE;
14536     }
14537
14538   g_value_unset (&transformed);
14539   g_free (normalized_key);
14540   g_free (normalized_string);
14541   g_free (case_normalized_key);
14542   g_free (case_normalized_string);
14543
14544   return retval;
14545 }
14546
14547 static gboolean
14548 gtk_tree_view_search_iter (GtkTreeModel     *model,
14549                            GtkTreeSelection *selection,
14550                            GtkTreeIter      *iter,
14551                            const gchar      *text,
14552                            gint             *count,
14553                            gint              n)
14554 {
14555   GtkRBTree *tree = NULL;
14556   GtkRBNode *node = NULL;
14557   GtkTreePath *path;
14558
14559   GtkTreeView *tree_view = gtk_tree_selection_get_tree_view (selection);
14560
14561   path = gtk_tree_model_get_path (model, iter);
14562   _gtk_tree_view_find_node (tree_view, path, &tree, &node);
14563
14564   do
14565     {
14566       if (! tree_view->priv->search_equal_func (model, tree_view->priv->search_column, text, iter, tree_view->priv->search_user_data))
14567         {
14568           (*count)++;
14569           if (*count == n)
14570             {
14571               gtk_tree_view_scroll_to_cell (tree_view, path, NULL,
14572                                             TRUE, 0.5, 0.0);
14573               gtk_tree_selection_select_iter (selection, iter);
14574               gtk_tree_view_real_set_cursor (tree_view, path, FALSE, TRUE);
14575
14576               if (path)
14577                 gtk_tree_path_free (path);
14578
14579               return TRUE;
14580             }
14581         }
14582
14583       if (node->children)
14584         {
14585           gboolean has_child;
14586           GtkTreeIter tmp;
14587
14588           tree = node->children;
14589           node = tree->root;
14590
14591           while (node->left != tree->nil)
14592             node = node->left;
14593
14594           tmp = *iter;
14595           has_child = gtk_tree_model_iter_children (model, iter, &tmp);
14596           gtk_tree_path_down (path);
14597
14598           /* sanity check */
14599           TREE_VIEW_INTERNAL_ASSERT (has_child, FALSE);
14600         }
14601       else
14602         {
14603           gboolean done = FALSE;
14604
14605           do
14606             {
14607               node = _gtk_rbtree_next (tree, node);
14608
14609               if (node)
14610                 {
14611                   gboolean has_next;
14612
14613                   has_next = gtk_tree_model_iter_next (model, iter);
14614
14615                   done = TRUE;
14616                   gtk_tree_path_next (path);
14617
14618                   /* sanity check */
14619                   TREE_VIEW_INTERNAL_ASSERT (has_next, FALSE);
14620                 }
14621               else
14622                 {
14623                   gboolean has_parent;
14624                   GtkTreeIter tmp_iter = *iter;
14625
14626                   node = tree->parent_node;
14627                   tree = tree->parent_tree;
14628
14629                   if (!tree)
14630                     {
14631                       if (path)
14632                         gtk_tree_path_free (path);
14633
14634                       /* we've run out of tree, done with this func */
14635                       return FALSE;
14636                     }
14637
14638                   has_parent = gtk_tree_model_iter_parent (model,
14639                                                            iter,
14640                                                            &tmp_iter);
14641                   gtk_tree_path_up (path);
14642
14643                   /* sanity check */
14644                   TREE_VIEW_INTERNAL_ASSERT (has_parent, FALSE);
14645                 }
14646             }
14647           while (!done);
14648         }
14649     }
14650   while (1);
14651
14652   return FALSE;
14653 }
14654
14655 static void
14656 gtk_tree_view_search_init (GtkWidget   *entry,
14657                            GtkTreeView *tree_view)
14658 {
14659   gint ret;
14660   gint count = 0;
14661   const gchar *text;
14662   GtkTreeIter iter;
14663   GtkTreeModel *model;
14664   GtkTreeSelection *selection;
14665
14666   g_return_if_fail (GTK_IS_ENTRY (entry));
14667   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
14668
14669   text = gtk_entry_get_text (GTK_ENTRY (entry));
14670
14671   model = gtk_tree_view_get_model (tree_view);
14672   selection = gtk_tree_view_get_selection (tree_view);
14673
14674   /* search */
14675   gtk_tree_selection_unselect_all (selection);
14676   if (tree_view->priv->typeselect_flush_timeout
14677       && !tree_view->priv->search_custom_entry_set)
14678     {
14679       g_source_remove (tree_view->priv->typeselect_flush_timeout);
14680       tree_view->priv->typeselect_flush_timeout =
14681         gdk_threads_add_timeout (GTK_TREE_VIEW_SEARCH_DIALOG_TIMEOUT,
14682                        (GSourceFunc) gtk_tree_view_search_entry_flush_timeout,
14683                        tree_view);
14684     }
14685
14686   if (*text == '\0')
14687     return;
14688
14689   if (!gtk_tree_model_get_iter_first (model, &iter))
14690     return;
14691
14692   ret = gtk_tree_view_search_iter (model, selection,
14693                                    &iter, text,
14694                                    &count, 1);
14695
14696   if (ret)
14697     tree_view->priv->selected_iter = 1;
14698 }
14699
14700 static void
14701 gtk_tree_view_remove_widget (GtkCellEditable *cell_editable,
14702                              GtkTreeView     *tree_view)
14703 {
14704   if (tree_view->priv->edited_column == NULL)
14705     return;
14706
14707   _gtk_tree_view_column_stop_editing (tree_view->priv->edited_column);
14708   tree_view->priv->edited_column = NULL;
14709
14710   if (gtk_widget_has_focus (GTK_WIDGET (cell_editable)))
14711     gtk_widget_grab_focus (GTK_WIDGET (tree_view));
14712
14713   g_signal_handlers_disconnect_by_func (cell_editable,
14714                                         gtk_tree_view_remove_widget,
14715                                         tree_view);
14716
14717   gtk_container_remove (GTK_CONTAINER (tree_view),
14718                         GTK_WIDGET (cell_editable));
14719
14720   /* FIXME should only redraw a single node */
14721   gtk_widget_queue_draw (GTK_WIDGET (tree_view));
14722 }
14723
14724 static gboolean
14725 gtk_tree_view_start_editing (GtkTreeView *tree_view,
14726                              GtkTreePath *cursor_path)
14727 {
14728   GtkTreeIter iter;
14729   GdkRectangle background_area;
14730   GdkRectangle cell_area;
14731   GtkCellEditable *editable_widget = NULL;
14732   gchar *path_string;
14733   guint flags = 0; /* can be 0, as the flags are primarily for rendering */
14734   gint retval = FALSE;
14735   GtkRBTree *cursor_tree;
14736   GtkRBNode *cursor_node;
14737
14738   g_assert (tree_view->priv->focus_column);
14739
14740   if (!gtk_widget_get_realized (GTK_WIDGET (tree_view)))
14741     return FALSE;
14742
14743   if (_gtk_tree_view_find_node (tree_view, cursor_path, &cursor_tree, &cursor_node) ||
14744       cursor_node == NULL)
14745     return FALSE;
14746
14747   path_string = gtk_tree_path_to_string (cursor_path);
14748   gtk_tree_model_get_iter (tree_view->priv->model, &iter, cursor_path);
14749
14750   validate_row (tree_view, cursor_tree, cursor_node, &iter, cursor_path);
14751
14752   gtk_tree_view_column_cell_set_cell_data (tree_view->priv->focus_column,
14753                                            tree_view->priv->model,
14754                                            &iter,
14755                                            GTK_RBNODE_FLAG_SET (cursor_node, GTK_RBNODE_IS_PARENT),
14756                                            cursor_node->children?TRUE:FALSE);
14757   gtk_tree_view_get_background_area (tree_view,
14758                                      cursor_path,
14759                                      tree_view->priv->focus_column,
14760                                      &background_area);
14761   gtk_tree_view_get_cell_area (tree_view,
14762                                cursor_path,
14763                                tree_view->priv->focus_column,
14764                                &cell_area);
14765
14766   if (_gtk_tree_view_column_cell_event (tree_view->priv->focus_column,
14767                                         &editable_widget,
14768                                         NULL,
14769                                         path_string,
14770                                         &background_area,
14771                                         &cell_area,
14772                                         flags))
14773     {
14774       retval = TRUE;
14775       if (editable_widget != NULL)
14776         {
14777           gint left, right;
14778           GdkRectangle area;
14779           GtkCellRenderer *cell;
14780
14781           area = cell_area;
14782           cell = _gtk_tree_view_column_get_edited_cell (tree_view->priv->focus_column);
14783
14784           _gtk_tree_view_column_get_neighbor_sizes (tree_view->priv->focus_column, cell, &left, &right);
14785
14786           area.x += left;
14787           area.width -= right + left;
14788
14789           gtk_tree_view_real_start_editing (tree_view,
14790                                             tree_view->priv->focus_column,
14791                                             cursor_path,
14792                                             editable_widget,
14793                                             &area,
14794                                             NULL,
14795                                             flags);
14796         }
14797
14798     }
14799   g_free (path_string);
14800   return retval;
14801 }
14802
14803 static void
14804 gtk_tree_view_real_start_editing (GtkTreeView       *tree_view,
14805                                   GtkTreeViewColumn *column,
14806                                   GtkTreePath       *path,
14807                                   GtkCellEditable   *cell_editable,
14808                                   GdkRectangle      *cell_area,
14809                                   GdkEvent          *event,
14810                                   guint              flags)
14811 {
14812   gint pre_val = tree_view->priv->vadjustment->value;
14813   GtkRequisition requisition;
14814
14815   tree_view->priv->edited_column = column;
14816   _gtk_tree_view_column_start_editing (column, GTK_CELL_EDITABLE (cell_editable));
14817
14818   gtk_tree_view_real_set_cursor (tree_view, path, FALSE, TRUE);
14819   cell_area->y += pre_val - (int)tree_view->priv->vadjustment->value;
14820
14821   gtk_widget_size_request (GTK_WIDGET (cell_editable), &requisition);
14822
14823   GTK_TREE_VIEW_SET_FLAG (tree_view, GTK_TREE_VIEW_DRAW_KEYFOCUS);
14824
14825   if (requisition.height < cell_area->height)
14826     {
14827       gint diff = cell_area->height - requisition.height;
14828       gtk_tree_view_put (tree_view,
14829                          GTK_WIDGET (cell_editable),
14830                          cell_area->x, cell_area->y + diff/2,
14831                          cell_area->width, requisition.height);
14832     }
14833   else
14834     {
14835       gtk_tree_view_put (tree_view,
14836                          GTK_WIDGET (cell_editable),
14837                          cell_area->x, cell_area->y,
14838                          cell_area->width, cell_area->height);
14839     }
14840
14841   gtk_cell_editable_start_editing (GTK_CELL_EDITABLE (cell_editable),
14842                                    (GdkEvent *)event);
14843
14844   gtk_widget_grab_focus (GTK_WIDGET (cell_editable));
14845   g_signal_connect (cell_editable, "remove-widget",
14846                     G_CALLBACK (gtk_tree_view_remove_widget), tree_view);
14847 }
14848
14849 static void
14850 gtk_tree_view_stop_editing (GtkTreeView *tree_view,
14851                             gboolean     cancel_editing)
14852 {
14853   GtkTreeViewColumn *column;
14854   GtkCellRenderer *cell;
14855
14856   if (tree_view->priv->edited_column == NULL)
14857     return;
14858
14859   /*
14860    * This is very evil. We need to do this, because
14861    * gtk_cell_editable_editing_done may trigger gtk_tree_view_row_changed
14862    * later on. If gtk_tree_view_row_changed notices
14863    * tree_view->priv->edited_column != NULL, it'll call
14864    * gtk_tree_view_stop_editing again. Bad things will happen then.
14865    *
14866    * Please read that again if you intend to modify anything here.
14867    */
14868
14869   column = tree_view->priv->edited_column;
14870   tree_view->priv->edited_column = NULL;
14871
14872   cell = _gtk_tree_view_column_get_edited_cell (column);
14873   gtk_cell_renderer_stop_editing (cell, cancel_editing);
14874
14875   if (!cancel_editing)
14876     gtk_cell_editable_editing_done (column->editable_widget);
14877
14878   tree_view->priv->edited_column = column;
14879
14880   gtk_cell_editable_remove_widget (column->editable_widget);
14881 }
14882
14883
14884 /**
14885  * gtk_tree_view_set_hover_selection:
14886  * @tree_view: a #GtkTreeView
14887  * @hover: %TRUE to enable hover selection mode
14888  *
14889  * Enables of disables the hover selection mode of @tree_view.
14890  * Hover selection makes the selected row follow the pointer.
14891  * Currently, this works only for the selection modes
14892  * %GTK_SELECTION_SINGLE and %GTK_SELECTION_BROWSE.
14893  *
14894  * Since: 2.6
14895  **/
14896 void
14897 gtk_tree_view_set_hover_selection (GtkTreeView *tree_view,
14898                                    gboolean     hover)
14899 {
14900   hover = hover != FALSE;
14901
14902   if (hover != tree_view->priv->hover_selection)
14903     {
14904       tree_view->priv->hover_selection = hover;
14905
14906       g_object_notify (G_OBJECT (tree_view), "hover-selection");
14907     }
14908 }
14909
14910 /**
14911  * gtk_tree_view_get_hover_selection:
14912  * @tree_view: a #GtkTreeView
14913  *
14914  * Returns whether hover selection mode is turned on for @tree_view.
14915  *
14916  * Return value: %TRUE if @tree_view is in hover selection mode
14917  *
14918  * Since: 2.6
14919  **/
14920 gboolean
14921 gtk_tree_view_get_hover_selection (GtkTreeView *tree_view)
14922 {
14923   return tree_view->priv->hover_selection;
14924 }
14925
14926 /**
14927  * gtk_tree_view_set_hover_expand:
14928  * @tree_view: a #GtkTreeView
14929  * @expand: %TRUE to enable hover selection mode
14930  *
14931  * Enables of disables the hover expansion mode of @tree_view.
14932  * Hover expansion makes rows expand or collapse if the pointer
14933  * moves over them.
14934  *
14935  * Since: 2.6
14936  **/
14937 void
14938 gtk_tree_view_set_hover_expand (GtkTreeView *tree_view,
14939                                 gboolean     expand)
14940 {
14941   expand = expand != FALSE;
14942
14943   if (expand != tree_view->priv->hover_expand)
14944     {
14945       tree_view->priv->hover_expand = expand;
14946
14947       g_object_notify (G_OBJECT (tree_view), "hover-expand");
14948     }
14949 }
14950
14951 /**
14952  * gtk_tree_view_get_hover_expand:
14953  * @tree_view: a #GtkTreeView
14954  *
14955  * Returns whether hover expansion mode is turned on for @tree_view.
14956  *
14957  * Return value: %TRUE if @tree_view is in hover expansion mode
14958  *
14959  * Since: 2.6
14960  **/
14961 gboolean
14962 gtk_tree_view_get_hover_expand (GtkTreeView *tree_view)
14963 {
14964   return tree_view->priv->hover_expand;
14965 }
14966
14967 /**
14968  * gtk_tree_view_set_rubber_banding:
14969  * @tree_view: a #GtkTreeView
14970  * @enable: %TRUE to enable rubber banding
14971  *
14972  * Enables or disables rubber banding in @tree_view.  If the selection mode
14973  * is #GTK_SELECTION_MULTIPLE, rubber banding will allow the user to select
14974  * multiple rows by dragging the mouse.
14975  *
14976  * Since: 2.10
14977  **/
14978 void
14979 gtk_tree_view_set_rubber_banding (GtkTreeView *tree_view,
14980                                   gboolean     enable)
14981 {
14982   enable = enable != FALSE;
14983
14984   if (enable != tree_view->priv->rubber_banding_enable)
14985     {
14986       tree_view->priv->rubber_banding_enable = enable;
14987
14988       g_object_notify (G_OBJECT (tree_view), "rubber-banding");
14989     }
14990 }
14991
14992 /**
14993  * gtk_tree_view_get_rubber_banding:
14994  * @tree_view: a #GtkTreeView
14995  *
14996  * Returns whether rubber banding is turned on for @tree_view.  If the
14997  * selection mode is #GTK_SELECTION_MULTIPLE, rubber banding will allow the
14998  * user to select multiple rows by dragging the mouse.
14999  *
15000  * Return value: %TRUE if rubber banding in @tree_view is enabled.
15001  *
15002  * Since: 2.10
15003  **/
15004 gboolean
15005 gtk_tree_view_get_rubber_banding (GtkTreeView *tree_view)
15006 {
15007   return tree_view->priv->rubber_banding_enable;
15008 }
15009
15010 /**
15011  * gtk_tree_view_is_rubber_banding_active:
15012  * @tree_view: a #GtkTreeView
15013  *
15014  * Returns whether a rubber banding operation is currently being done
15015  * in @tree_view.
15016  *
15017  * Return value: %TRUE if a rubber banding operation is currently being
15018  * done in @tree_view.
15019  *
15020  * Since: 2.12
15021  **/
15022 gboolean
15023 gtk_tree_view_is_rubber_banding_active (GtkTreeView *tree_view)
15024 {
15025   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), FALSE);
15026
15027   if (tree_view->priv->rubber_banding_enable
15028       && tree_view->priv->rubber_band_status == RUBBER_BAND_ACTIVE)
15029     return TRUE;
15030
15031   return FALSE;
15032 }
15033
15034 /**
15035  * gtk_tree_view_get_row_separator_func:
15036  * @tree_view: a #GtkTreeView
15037  *
15038  * Returns the current row separator function.
15039  *
15040  * Return value: the current row separator function.
15041  *
15042  * Since: 2.6
15043  **/
15044 GtkTreeViewRowSeparatorFunc
15045 gtk_tree_view_get_row_separator_func (GtkTreeView *tree_view)
15046 {
15047   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), NULL);
15048
15049   return tree_view->priv->row_separator_func;
15050 }
15051
15052 /**
15053  * gtk_tree_view_set_row_separator_func:
15054  * @tree_view: a #GtkTreeView
15055  * @func: a #GtkTreeViewRowSeparatorFunc
15056  * @data: (allow-none): user data to pass to @func, or %NULL
15057  * @destroy: (allow-none): destroy notifier for @data, or %NULL
15058  *
15059  * Sets the row separator function, which is used to determine
15060  * whether a row should be drawn as a separator. If the row separator
15061  * function is %NULL, no separators are drawn. This is the default value.
15062  *
15063  * Since: 2.6
15064  **/
15065 void
15066 gtk_tree_view_set_row_separator_func (GtkTreeView                 *tree_view,
15067                                       GtkTreeViewRowSeparatorFunc  func,
15068                                       gpointer                     data,
15069                                       GDestroyNotify               destroy)
15070 {
15071   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
15072
15073   if (tree_view->priv->row_separator_destroy)
15074     tree_view->priv->row_separator_destroy (tree_view->priv->row_separator_data);
15075
15076   tree_view->priv->row_separator_func = func;
15077   tree_view->priv->row_separator_data = data;
15078   tree_view->priv->row_separator_destroy = destroy;
15079
15080   /* Have the tree recalculate heights */
15081   _gtk_rbtree_mark_invalid (tree_view->priv->tree);
15082   gtk_widget_queue_resize (GTK_WIDGET (tree_view));
15083 }
15084
15085
15086 static void
15087 gtk_tree_view_grab_notify (GtkWidget *widget,
15088                            gboolean   was_grabbed)
15089 {
15090   GtkTreeView *tree_view = GTK_TREE_VIEW (widget);
15091
15092   tree_view->priv->in_grab = !was_grabbed;
15093
15094   if (!was_grabbed)
15095     {
15096       tree_view->priv->pressed_button = -1;
15097
15098       if (tree_view->priv->rubber_band_status)
15099         gtk_tree_view_stop_rubber_band (tree_view);
15100     }
15101 }
15102
15103 static void
15104 gtk_tree_view_state_changed (GtkWidget      *widget,
15105                              GtkStateType    previous_state)
15106 {
15107   GtkTreeView *tree_view = GTK_TREE_VIEW (widget);
15108
15109   if (gtk_widget_get_realized (widget))
15110     {
15111       gdk_window_set_back_pixmap (widget->window, NULL, FALSE);
15112       gdk_window_set_background (tree_view->priv->bin_window, &widget->style->base[widget->state]);
15113     }
15114
15115   gtk_widget_queue_draw (widget);
15116 }
15117
15118 /**
15119  * gtk_tree_view_get_grid_lines:
15120  * @tree_view: a #GtkTreeView
15121  *
15122  * Returns which grid lines are enabled in @tree_view.
15123  *
15124  * Return value: a #GtkTreeViewGridLines value indicating which grid lines
15125  * are enabled.
15126  *
15127  * Since: 2.10
15128  */
15129 GtkTreeViewGridLines
15130 gtk_tree_view_get_grid_lines (GtkTreeView *tree_view)
15131 {
15132   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), 0);
15133
15134   return tree_view->priv->grid_lines;
15135 }
15136
15137 /**
15138  * gtk_tree_view_set_grid_lines:
15139  * @tree_view: a #GtkTreeView
15140  * @grid_lines: a #GtkTreeViewGridLines value indicating which grid lines to
15141  * enable.
15142  *
15143  * Sets which grid lines to draw in @tree_view.
15144  *
15145  * Since: 2.10
15146  */
15147 void
15148 gtk_tree_view_set_grid_lines (GtkTreeView           *tree_view,
15149                               GtkTreeViewGridLines   grid_lines)
15150 {
15151   GtkTreeViewPrivate *priv;
15152   GtkWidget *widget;
15153   GtkTreeViewGridLines old_grid_lines;
15154
15155   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
15156
15157   priv = tree_view->priv;
15158   widget = GTK_WIDGET (tree_view);
15159
15160   old_grid_lines = priv->grid_lines;
15161   priv->grid_lines = grid_lines;
15162
15163   if (gtk_widget_get_realized (widget))
15164     {
15165       if (grid_lines == GTK_TREE_VIEW_GRID_LINES_NONE &&
15166           priv->grid_line_gc)
15167         {
15168           g_object_unref (priv->grid_line_gc);
15169           priv->grid_line_gc = NULL;
15170         }
15171
15172       if (grid_lines != GTK_TREE_VIEW_GRID_LINES_NONE &&
15173           !priv->grid_line_gc)
15174         {
15175           gint line_width;
15176           gint8 *dash_list;
15177
15178           gtk_widget_style_get (widget,
15179                                 "grid-line-width", &line_width,
15180                                 "grid-line-pattern", (gchar *)&dash_list,
15181                                 NULL);
15182
15183           priv->grid_line_gc = gdk_gc_new (widget->window);
15184           gdk_gc_copy (priv->grid_line_gc, widget->style->black_gc);
15185
15186           gdk_gc_set_line_attributes (priv->grid_line_gc, line_width,
15187                                       GDK_LINE_ON_OFF_DASH,
15188                                       GDK_CAP_BUTT, GDK_JOIN_MITER);
15189           gdk_gc_set_dashes (priv->grid_line_gc, 0, dash_list, 2);
15190
15191           g_free (dash_list);
15192         }
15193     }
15194
15195   if (old_grid_lines != grid_lines)
15196     {
15197       gtk_widget_queue_draw (GTK_WIDGET (tree_view));
15198
15199       g_object_notify (G_OBJECT (tree_view), "enable-grid-lines");
15200     }
15201 }
15202
15203 /**
15204  * gtk_tree_view_get_enable_tree_lines:
15205  * @tree_view: a #GtkTreeView.
15206  *
15207  * Returns whether or not tree lines are drawn in @tree_view.
15208  *
15209  * Return value: %TRUE if tree lines are drawn in @tree_view, %FALSE
15210  * otherwise.
15211  *
15212  * Since: 2.10
15213  */
15214 gboolean
15215 gtk_tree_view_get_enable_tree_lines (GtkTreeView *tree_view)
15216 {
15217   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), FALSE);
15218
15219   return tree_view->priv->tree_lines_enabled;
15220 }
15221
15222 /**
15223  * gtk_tree_view_set_enable_tree_lines:
15224  * @tree_view: a #GtkTreeView
15225  * @enabled: %TRUE to enable tree line drawing, %FALSE otherwise.
15226  *
15227  * Sets whether to draw lines interconnecting the expanders in @tree_view.
15228  * This does not have any visible effects for lists.
15229  *
15230  * Since: 2.10
15231  */
15232 void
15233 gtk_tree_view_set_enable_tree_lines (GtkTreeView *tree_view,
15234                                      gboolean     enabled)
15235 {
15236   GtkTreeViewPrivate *priv;
15237   GtkWidget *widget;
15238   gboolean was_enabled;
15239
15240   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
15241
15242   enabled = enabled != FALSE;
15243
15244   priv = tree_view->priv;
15245   widget = GTK_WIDGET (tree_view);
15246
15247   was_enabled = priv->tree_lines_enabled;
15248
15249   priv->tree_lines_enabled = enabled;
15250
15251   if (gtk_widget_get_realized (widget))
15252     {
15253       if (!enabled && priv->tree_line_gc)
15254         {
15255           g_object_unref (priv->tree_line_gc);
15256           priv->tree_line_gc = NULL;
15257         }
15258
15259       if (enabled && !priv->tree_line_gc)
15260         {
15261           gint line_width;
15262           gint8 *dash_list;
15263           gtk_widget_style_get (widget,
15264                                 "tree-line-width", &line_width,
15265                                 "tree-line-pattern", (gchar *)&dash_list,
15266                                 NULL);
15267
15268           priv->tree_line_gc = gdk_gc_new (widget->window);
15269           gdk_gc_copy (priv->tree_line_gc, widget->style->black_gc);
15270
15271           gdk_gc_set_line_attributes (priv->tree_line_gc, line_width,
15272                                       GDK_LINE_ON_OFF_DASH,
15273                                       GDK_CAP_BUTT, GDK_JOIN_MITER);
15274           gdk_gc_set_dashes (priv->tree_line_gc, 0, dash_list, 2);
15275
15276           g_free (dash_list);
15277         }
15278     }
15279
15280   if (was_enabled != enabled)
15281     {
15282       gtk_widget_queue_draw (GTK_WIDGET (tree_view));
15283
15284       g_object_notify (G_OBJECT (tree_view), "enable-tree-lines");
15285     }
15286 }
15287
15288
15289 /**
15290  * gtk_tree_view_set_show_expanders:
15291  * @tree_view: a #GtkTreeView
15292  * @enabled: %TRUE to enable expander drawing, %FALSE otherwise.
15293  *
15294  * Sets whether to draw and enable expanders and indent child rows in
15295  * @tree_view.  When disabled there will be no expanders visible in trees
15296  * and there will be no way to expand and collapse rows by default.  Also
15297  * note that hiding the expanders will disable the default indentation.  You
15298  * can set a custom indentation in this case using
15299  * gtk_tree_view_set_level_indentation().
15300  * This does not have any visible effects for lists.
15301  *
15302  * Since: 2.12
15303  */
15304 void
15305 gtk_tree_view_set_show_expanders (GtkTreeView *tree_view,
15306                                   gboolean     enabled)
15307 {
15308   gboolean was_enabled;
15309
15310   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
15311
15312   enabled = enabled != FALSE;
15313   was_enabled = GTK_TREE_VIEW_FLAG_SET (tree_view, GTK_TREE_VIEW_SHOW_EXPANDERS);
15314
15315   if (enabled)
15316     GTK_TREE_VIEW_SET_FLAG (tree_view, GTK_TREE_VIEW_SHOW_EXPANDERS);
15317   else
15318     GTK_TREE_VIEW_UNSET_FLAG (tree_view, GTK_TREE_VIEW_SHOW_EXPANDERS);
15319
15320   if (enabled != was_enabled)
15321     gtk_widget_queue_draw (GTK_WIDGET (tree_view));
15322 }
15323
15324 /**
15325  * gtk_tree_view_get_show_expanders:
15326  * @tree_view: a #GtkTreeView.
15327  *
15328  * Returns whether or not expanders are drawn in @tree_view.
15329  *
15330  * Return value: %TRUE if expanders are drawn in @tree_view, %FALSE
15331  * otherwise.
15332  *
15333  * Since: 2.12
15334  */
15335 gboolean
15336 gtk_tree_view_get_show_expanders (GtkTreeView *tree_view)
15337 {
15338   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), FALSE);
15339
15340   return GTK_TREE_VIEW_FLAG_SET (tree_view, GTK_TREE_VIEW_SHOW_EXPANDERS);
15341 }
15342
15343 /**
15344  * gtk_tree_view_set_level_indentation:
15345  * @tree_view: a #GtkTreeView
15346  * @indentation: the amount, in pixels, of extra indentation in @tree_view.
15347  *
15348  * Sets the amount of extra indentation for child levels to use in @tree_view
15349  * in addition to the default indentation.  The value should be specified in
15350  * pixels, a value of 0 disables this feature and in this case only the default
15351  * indentation will be used.
15352  * This does not have any visible effects for lists.
15353  *
15354  * Since: 2.12
15355  */
15356 void
15357 gtk_tree_view_set_level_indentation (GtkTreeView *tree_view,
15358                                      gint         indentation)
15359 {
15360   tree_view->priv->level_indentation = indentation;
15361
15362   gtk_widget_queue_draw (GTK_WIDGET (tree_view));
15363 }
15364
15365 /**
15366  * gtk_tree_view_get_level_indentation:
15367  * @tree_view: a #GtkTreeView.
15368  *
15369  * Returns the amount, in pixels, of extra indentation for child levels
15370  * in @tree_view.
15371  *
15372  * Return value: the amount of extra indentation for child levels in
15373  * @tree_view.  A return value of 0 means that this feature is disabled.
15374  *
15375  * Since: 2.12
15376  */
15377 gint
15378 gtk_tree_view_get_level_indentation (GtkTreeView *tree_view)
15379 {
15380   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), 0);
15381
15382   return tree_view->priv->level_indentation;
15383 }
15384
15385 /**
15386  * gtk_tree_view_set_tooltip_row:
15387  * @tree_view: a #GtkTreeView
15388  * @tooltip: a #GtkTooltip
15389  * @path: a #GtkTreePath
15390  *
15391  * Sets the tip area of @tooltip to be the area covered by the row at @path.
15392  * See also gtk_tree_view_set_tooltip_column() for a simpler alternative.
15393  * See also gtk_tooltip_set_tip_area().
15394  *
15395  * Since: 2.12
15396  */
15397 void
15398 gtk_tree_view_set_tooltip_row (GtkTreeView *tree_view,
15399                                GtkTooltip  *tooltip,
15400                                GtkTreePath *path)
15401 {
15402   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
15403   g_return_if_fail (GTK_IS_TOOLTIP (tooltip));
15404
15405   gtk_tree_view_set_tooltip_cell (tree_view, tooltip, path, NULL, NULL);
15406 }
15407
15408 /**
15409  * gtk_tree_view_set_tooltip_cell:
15410  * @tree_view: a #GtkTreeView
15411  * @tooltip: a #GtkTooltip
15412  * @path: (allow-none): a #GtkTreePath or %NULL
15413  * @column: (allow-none): a #GtkTreeViewColumn or %NULL
15414  * @cell: (allow-none): a #GtkCellRenderer or %NULL
15415  *
15416  * Sets the tip area of @tooltip to the area @path, @column and @cell have
15417  * in common.  For example if @path is %NULL and @column is set, the tip
15418  * area will be set to the full area covered by @column.  See also
15419  * gtk_tooltip_set_tip_area().
15420  *
15421  * Note that if @path is not specified and @cell is set and part of a column
15422  * containing the expander, the tooltip might not show and hide at the correct
15423  * position.  In such cases @path must be set to the current node under the
15424  * mouse cursor for this function to operate correctly.
15425  *
15426  * See also gtk_tree_view_set_tooltip_column() for a simpler alternative.
15427  *
15428  * Since: 2.12
15429  */
15430 void
15431 gtk_tree_view_set_tooltip_cell (GtkTreeView       *tree_view,
15432                                 GtkTooltip        *tooltip,
15433                                 GtkTreePath       *path,
15434                                 GtkTreeViewColumn *column,
15435                                 GtkCellRenderer   *cell)
15436 {
15437   GdkRectangle rect;
15438
15439   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
15440   g_return_if_fail (GTK_IS_TOOLTIP (tooltip));
15441   g_return_if_fail (column == NULL || GTK_IS_TREE_VIEW_COLUMN (column));
15442   g_return_if_fail (cell == NULL || GTK_IS_CELL_RENDERER (cell));
15443
15444   /* Determine x values. */
15445   if (column && cell)
15446     {
15447       GdkRectangle tmp;
15448       gint start, width;
15449
15450       /* We always pass in path here, whether it is NULL or not.
15451        * For cells in expander columns path must be specified so that
15452        * we can correctly account for the indentation.  This also means
15453        * that the tooltip is constrained vertically by the "Determine y
15454        * values" code below; this is not a real problem since cells actually
15455        * don't stretch vertically in constrast to columns.
15456        */
15457       gtk_tree_view_get_cell_area (tree_view, path, column, &tmp);
15458       gtk_tree_view_column_cell_get_position (column, cell, &start, &width);
15459
15460       gtk_tree_view_convert_bin_window_to_widget_coords (tree_view,
15461                                                          tmp.x + start, 0,
15462                                                          &rect.x, NULL);
15463       rect.width = width;
15464     }
15465   else if (column)
15466     {
15467       GdkRectangle tmp;
15468
15469       gtk_tree_view_get_background_area (tree_view, NULL, column, &tmp);
15470       gtk_tree_view_convert_bin_window_to_widget_coords (tree_view,
15471                                                          tmp.x, 0,
15472                                                          &rect.x, NULL);
15473       rect.width = tmp.width;
15474     }
15475   else
15476     {
15477       rect.x = 0;
15478       rect.width = GTK_WIDGET (tree_view)->allocation.width;
15479     }
15480
15481   /* Determine y values. */
15482   if (path)
15483     {
15484       GdkRectangle tmp;
15485
15486       gtk_tree_view_get_background_area (tree_view, path, NULL, &tmp);
15487       gtk_tree_view_convert_bin_window_to_widget_coords (tree_view,
15488                                                          0, tmp.y,
15489                                                          NULL, &rect.y);
15490       rect.height = tmp.height;
15491     }
15492   else
15493     {
15494       rect.y = 0;
15495       rect.height = tree_view->priv->vadjustment->page_size;
15496     }
15497
15498   gtk_tooltip_set_tip_area (tooltip, &rect);
15499 }
15500
15501 /**
15502  * gtk_tree_view_get_tooltip_context:
15503  * @tree_view: a #GtkTreeView
15504  * @x: the x coordinate (relative to widget coordinates)
15505  * @y: the y coordinate (relative to widget coordinates)
15506  * @keyboard_tip: whether this is a keyboard tooltip or not
15507  * @model: (allow-none): a pointer to receive a #GtkTreeModel or %NULL
15508  * @path: (allow-none): a pointer to receive a #GtkTreePath or %NULL
15509  * @iter: (allow-none): a pointer to receive a #GtkTreeIter or %NULL
15510  *
15511  * This function is supposed to be used in a #GtkWidget::query-tooltip
15512  * signal handler for #GtkTreeView.  The @x, @y and @keyboard_tip values
15513  * which are received in the signal handler, should be passed to this
15514  * function without modification.
15515  *
15516  * The return value indicates whether there is a tree view row at the given
15517  * coordinates (%TRUE) or not (%FALSE) for mouse tooltips.  For keyboard
15518  * tooltips the row returned will be the cursor row.  When %TRUE, then any of
15519  * @model, @path and @iter which have been provided will be set to point to
15520  * that row and the corresponding model.  @x and @y will always be converted
15521  * to be relative to @tree_view's bin_window if @keyboard_tooltip is %FALSE.
15522  *
15523  * Return value: whether or not the given tooltip context points to a row.
15524  *
15525  * Since: 2.12
15526  */
15527 gboolean
15528 gtk_tree_view_get_tooltip_context (GtkTreeView   *tree_view,
15529                                    gint          *x,
15530                                    gint          *y,
15531                                    gboolean       keyboard_tip,
15532                                    GtkTreeModel **model,
15533                                    GtkTreePath  **path,
15534                                    GtkTreeIter   *iter)
15535 {
15536   GtkTreePath *tmppath = NULL;
15537
15538   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), FALSE);
15539   g_return_val_if_fail (x != NULL, FALSE);
15540   g_return_val_if_fail (y != NULL, FALSE);
15541
15542   if (keyboard_tip)
15543     {
15544       gtk_tree_view_get_cursor (tree_view, &tmppath, NULL);
15545
15546       if (!tmppath)
15547         return FALSE;
15548     }
15549   else
15550     {
15551       gtk_tree_view_convert_widget_to_bin_window_coords (tree_view, *x, *y,
15552                                                          x, y);
15553
15554       if (!gtk_tree_view_get_path_at_pos (tree_view, *x, *y,
15555                                           &tmppath, NULL, NULL, NULL))
15556         return FALSE;
15557     }
15558
15559   if (model)
15560     *model = gtk_tree_view_get_model (tree_view);
15561
15562   if (iter)
15563     gtk_tree_model_get_iter (gtk_tree_view_get_model (tree_view),
15564                              iter, tmppath);
15565
15566   if (path)
15567     *path = tmppath;
15568   else
15569     gtk_tree_path_free (tmppath);
15570
15571   return TRUE;
15572 }
15573
15574 static gboolean
15575 gtk_tree_view_set_tooltip_query_cb (GtkWidget  *widget,
15576                                     gint        x,
15577                                     gint        y,
15578                                     gboolean    keyboard_tip,
15579                                     GtkTooltip *tooltip,
15580                                     gpointer    data)
15581 {
15582   GValue value = { 0, };
15583   GValue transformed = { 0, };
15584   GtkTreeIter iter;
15585   GtkTreePath *path;
15586   GtkTreeModel *model;
15587   GtkTreeView *tree_view = GTK_TREE_VIEW (widget);
15588
15589   if (!gtk_tree_view_get_tooltip_context (GTK_TREE_VIEW (widget),
15590                                           &x, &y,
15591                                           keyboard_tip,
15592                                           &model, &path, &iter))
15593     return FALSE;
15594
15595   gtk_tree_model_get_value (model, &iter,
15596                             tree_view->priv->tooltip_column, &value);
15597
15598   g_value_init (&transformed, G_TYPE_STRING);
15599
15600   if (!g_value_transform (&value, &transformed))
15601     {
15602       g_value_unset (&value);
15603       gtk_tree_path_free (path);
15604
15605       return FALSE;
15606     }
15607
15608   g_value_unset (&value);
15609
15610   if (!g_value_get_string (&transformed))
15611     {
15612       g_value_unset (&transformed);
15613       gtk_tree_path_free (path);
15614
15615       return FALSE;
15616     }
15617
15618   gtk_tooltip_set_markup (tooltip, g_value_get_string (&transformed));
15619   gtk_tree_view_set_tooltip_row (tree_view, tooltip, path);
15620
15621   gtk_tree_path_free (path);
15622   g_value_unset (&transformed);
15623
15624   return TRUE;
15625 }
15626
15627 /**
15628  * gtk_tree_view_set_tooltip_column:
15629  * @tree_view: a #GtkTreeView
15630  * @column: an integer, which is a valid column number for @tree_view's model
15631  *
15632  * If you only plan to have simple (text-only) tooltips on full rows, you
15633  * can use this function to have #GtkTreeView handle these automatically
15634  * for you. @column should be set to the column in @tree_view's model
15635  * containing the tooltip texts, or -1 to disable this feature.
15636  *
15637  * When enabled, #GtkWidget::has-tooltip will be set to %TRUE and
15638  * @tree_view will connect a #GtkWidget::query-tooltip signal handler.
15639  *
15640  * Note that the signal handler sets the text with gtk_tooltip_set_markup(),
15641  * so &amp;, &lt;, etc have to be escaped in the text.
15642  *
15643  * Since: 2.12
15644  */
15645 void
15646 gtk_tree_view_set_tooltip_column (GtkTreeView *tree_view,
15647                                   gint         column)
15648 {
15649   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
15650
15651   if (column == tree_view->priv->tooltip_column)
15652     return;
15653
15654   if (column == -1)
15655     {
15656       g_signal_handlers_disconnect_by_func (tree_view,
15657                                             gtk_tree_view_set_tooltip_query_cb,
15658                                             NULL);
15659       gtk_widget_set_has_tooltip (GTK_WIDGET (tree_view), FALSE);
15660     }
15661   else
15662     {
15663       if (tree_view->priv->tooltip_column == -1)
15664         {
15665           g_signal_connect (tree_view, "query-tooltip",
15666                             G_CALLBACK (gtk_tree_view_set_tooltip_query_cb), NULL);
15667           gtk_widget_set_has_tooltip (GTK_WIDGET (tree_view), TRUE);
15668         }
15669     }
15670
15671   tree_view->priv->tooltip_column = column;
15672   g_object_notify (G_OBJECT (tree_view), "tooltip-column");
15673 }
15674
15675 /**
15676  * gtk_tree_view_get_tooltip_column:
15677  * @tree_view: a #GtkTreeView
15678  *
15679  * Returns the column of @tree_view's model which is being used for
15680  * displaying tooltips on @tree_view's rows.
15681  *
15682  * Return value: the index of the tooltip column that is currently being
15683  * used, or -1 if this is disabled.
15684  *
15685  * Since: 2.12
15686  */
15687 gint
15688 gtk_tree_view_get_tooltip_column (GtkTreeView *tree_view)
15689 {
15690   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), 0);
15691
15692   return tree_view->priv->tooltip_column;
15693 }
15694
15695 #define __GTK_TREE_VIEW_C__
15696 #include "gtkaliasdef.c"