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 "gtksizerequest.h"
  47 #include "gtkprivate.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                                                          GdkDevice        *device);
 402 static void     gtk_tree_view_search_position_func      (GtkTreeView      *tree_view,
 403                                                          GtkWidget        *search_dialog,
 404                                                          gpointer          user_data);
 405 static void     gtk_tree_view_search_disable_popdown    (GtkEntry         *entry,
 406                                                          GtkMenu          *menu,
 407                                                          gpointer          data);
 408 static void     gtk_tree_view_search_preedit_changed    (GtkIMContext     *im_context,
 409                                                          GtkTreeView      *tree_view);
 410 static void     gtk_tree_view_search_activate           (GtkEntry         *entry,
 411                                                          GtkTreeView      *tree_view);
 412 static gboolean gtk_tree_view_real_search_enable_popdown(gpointer          data);
 413 static void     gtk_tree_view_search_enable_popdown     (GtkWidget        *widget,
 414                                                          gpointer          data);
 415 static gboolean gtk_tree_view_search_delete_event       (GtkWidget        *widget,
 416                                                          GdkEventAny      *event,
 417                                                          GtkTreeView      *tree_view);
 418 static gboolean gtk_tree_view_search_button_press_event (GtkWidget        *widget,
 419                                                          GdkEventButton   *event,
 420                                                          GtkTreeView      *tree_view);
 421 static gboolean gtk_tree_view_search_scroll_event       (GtkWidget        *entry,
 422                                                          GdkEventScroll   *event,
 423                                                          GtkTreeView      *tree_view);
 424 static gboolean gtk_tree_view_search_key_press_event    (GtkWidget        *entry,
 425                                                          GdkEventKey      *event,
 426                                                          GtkTreeView      *tree_view);
 427 static gboolean gtk_tree_view_search_move               (GtkWidget        *window,
 428                                                          GtkTreeView      *tree_view,
 429                                                          gboolean          up);
 430 static gboolean gtk_tree_view_search_equal_func         (GtkTreeModel     *model,
 431                                                          gint              column,
 432                                                          const gchar      *key,
 433                                                          GtkTreeIter      *iter,
 434                                                          gpointer          search_data);
 435 static gboolean gtk_tree_view_search_iter               (GtkTreeModel     *model,
 436                                                          GtkTreeSelection *selection,
 437                                                          GtkTreeIter      *iter,
 438                                                          const gchar      *text,
 439                                                          gint             *count,
 440                                                          gint              n);
 441 static void     gtk_tree_view_search_init               (GtkWidget        *entry,
 442                                                          GtkTreeView      *tree_view);
 443 static void     gtk_tree_view_put                       (GtkTreeView      *tree_view,
 444                                                          GtkWidget        *child_widget,
 445                                                          gint              x,
 446                                                          gint              y,
 447                                                          gint              width,
 448                                                          gint              height);
 449 static gboolean gtk_tree_view_start_editing             (GtkTreeView      *tree_view,
 450                                                          GtkTreePath      *cursor_path);
 451 static void gtk_tree_view_real_start_editing (GtkTreeView       *tree_view,
 452                                               GtkTreeViewColumn *column,
 453                                               GtkTreePath       *path,
 454                                               GtkCellEditable   *cell_editable,
 455                                               GdkRectangle      *cell_area,
 456                                               GdkEvent          *event,
 457                                               guint              flags);
 458 static void gtk_tree_view_stop_editing                  (GtkTreeView *tree_view,
 459                                                          gboolean     cancel_editing);
 460 static gboolean gtk_tree_view_real_start_interactive_search (GtkTreeView *tree_view,
 461                                                              GdkDevice   *device,
 462                                                              gboolean     keybinding);
 463 static gboolean gtk_tree_view_start_interactive_search      (GtkTreeView *tree_view);
 464 static GtkTreeViewColumn *gtk_tree_view_get_drop_column (GtkTreeView       *tree_view,
 465                                                          GtkTreeViewColumn *column,
 466                                                          gint               drop_position);
 467
 468 /* GtkBuildable */
 469 static void     gtk_tree_view_buildable_add_child          (GtkBuildable      *tree_view,
 470                                                             GtkBuilder        *builder,
 471                                                             GObject           *child,
 472                                                             const gchar       *type);
 473 static GObject *gtk_tree_view_buildable_get_internal_child (GtkBuildable      *buildable,
 474                                                             GtkBuilder        *builder,
 475                                                             const gchar       *childname);
 476 static void     gtk_tree_view_buildable_init               (GtkBuildableIface *iface);
 477
 478
 479 static gboolean scroll_row_timeout                   (gpointer     data);
 480 static void     add_scroll_timeout                   (GtkTreeView *tree_view);
 481 static void     remove_scroll_timeout                (GtkTreeView *tree_view);
 482
 483 static guint tree_view_signals [LAST_SIGNAL] = { 0 };
 484
 485 \f
 486
 487 /* GType Methods
 488  */
 489
 490 G_DEFINE_TYPE_WITH_CODE (GtkTreeView, gtk_tree_view, GTK_TYPE_CONTAINER,
 491                          G_IMPLEMENT_INTERFACE (GTK_TYPE_BUILDABLE,
 492                                                 gtk_tree_view_buildable_init))
 493
 494 static void
 495 gtk_tree_view_class_init (GtkTreeViewClass *class)
 496 {
 497   GObjectClass *o_class;
 498   GtkObjectClass *object_class;
 499   GtkWidgetClass *widget_class;
 500   GtkContainerClass *container_class;
 501   GtkBindingSet *binding_set;
 502
 503   binding_set = gtk_binding_set_by_class (class);
 504
 505   o_class = (GObjectClass *) class;
 506   object_class = (GtkObjectClass *) class;
 507   widget_class = (GtkWidgetClass *) class;
 508   container_class = (GtkContainerClass *) class;
 509
 510   /* GObject signals */
 511   o_class->set_property = gtk_tree_view_set_property;
 512   o_class->get_property = gtk_tree_view_get_property;
 513   o_class->finalize = gtk_tree_view_finalize;
 514
 515   /* GtkObject signals */
 516   object_class->destroy = gtk_tree_view_destroy;
 517
 518   /* GtkWidget signals */
 519   widget_class->map = gtk_tree_view_map;
 520   widget_class->realize = gtk_tree_view_realize;
 521   widget_class->unrealize = gtk_tree_view_unrealize;
 522   widget_class->size_request = gtk_tree_view_size_request;
 523   widget_class->size_allocate = gtk_tree_view_size_allocate;
 524   widget_class->button_press_event = gtk_tree_view_button_press;
 525   widget_class->button_release_event = gtk_tree_view_button_release;
 526   widget_class->grab_broken_event = gtk_tree_view_grab_broken;
 527   /*widget_class->configure_event = gtk_tree_view_configure;*/
 528   widget_class->motion_notify_event = gtk_tree_view_motion;
 529   widget_class->expose_event = gtk_tree_view_expose;
 530   widget_class->key_press_event = gtk_tree_view_key_press;
 531   widget_class->key_release_event = gtk_tree_view_key_release;
 532   widget_class->enter_notify_event = gtk_tree_view_enter_notify;
 533   widget_class->leave_notify_event = gtk_tree_view_leave_notify;
 534   widget_class->focus_out_event = gtk_tree_view_focus_out;
 535   widget_class->drag_begin = gtk_tree_view_drag_begin;
 536   widget_class->drag_end = gtk_tree_view_drag_end;
 537   widget_class->drag_data_get = gtk_tree_view_drag_data_get;
 538   widget_class->drag_data_delete = gtk_tree_view_drag_data_delete;
 539   widget_class->drag_leave = gtk_tree_view_drag_leave;
 540   widget_class->drag_motion = gtk_tree_view_drag_motion;
 541   widget_class->drag_drop = gtk_tree_view_drag_drop;
 542   widget_class->drag_data_received = gtk_tree_view_drag_data_received;
 543   widget_class->focus = gtk_tree_view_focus;
 544   widget_class->grab_focus = gtk_tree_view_grab_focus;
 545   widget_class->style_set = gtk_tree_view_style_set;
 546   widget_class->grab_notify = gtk_tree_view_grab_notify;
 547   widget_class->state_changed = gtk_tree_view_state_changed;
 548
 549   /* GtkContainer signals */
 550   container_class->remove = gtk_tree_view_remove;
 551   container_class->forall = gtk_tree_view_forall;
 552   container_class->set_focus_child = gtk_tree_view_set_focus_child;
 553
 554   class->set_scroll_adjustments = gtk_tree_view_set_adjustments;
 555   class->move_cursor = gtk_tree_view_real_move_cursor;
 556   class->select_all = gtk_tree_view_real_select_all;
 557   class->unselect_all = gtk_tree_view_real_unselect_all;
 558   class->select_cursor_row = gtk_tree_view_real_select_cursor_row;
 559   class->toggle_cursor_row = gtk_tree_view_real_toggle_cursor_row;
 560   class->expand_collapse_cursor_row = gtk_tree_view_real_expand_collapse_cursor_row;
 561   class->select_cursor_parent = gtk_tree_view_real_select_cursor_parent;
 562   class->start_interactive_search = gtk_tree_view_start_interactive_search;
 563
 564   /* Properties */
 565
 566   g_object_class_install_property (o_class,
 567                                    PROP_MODEL,
 568                                    g_param_spec_object ("model",
 569                                                         P_("TreeView Model"),
 570                                                         P_("The model for the tree view"),
 571                                                         GTK_TYPE_TREE_MODEL,
 572                                                         GTK_PARAM_READWRITE));
 573
 574   g_object_class_install_property (o_class,
 575                                    PROP_HADJUSTMENT,
 576                                    g_param_spec_object ("hadjustment",
 577                                                         P_("Horizontal Adjustment"),
 578                                                         P_("Horizontal Adjustment for the widget"),
 579                                                         GTK_TYPE_ADJUSTMENT,
 580                                                         GTK_PARAM_READWRITE));
 581
 582   g_object_class_install_property (o_class,
 583                                    PROP_VADJUSTMENT,
 584                                    g_param_spec_object ("vadjustment",
 585                                                         P_("Vertical Adjustment"),
 586                                                         P_("Vertical Adjustment for the widget"),
 587                                                         GTK_TYPE_ADJUSTMENT,
 588                                                         GTK_PARAM_READWRITE));
 589
 590   g_object_class_install_property (o_class,
 591                                    PROP_HEADERS_VISIBLE,
 592                                    g_param_spec_boolean ("headers-visible",
 593                                                          P_("Headers Visible"),
 594                                                          P_("Show the column header buttons"),
 595                                                          TRUE,
 596                                                          GTK_PARAM_READWRITE));
 597
 598   g_object_class_install_property (o_class,
 599                                    PROP_HEADERS_CLICKABLE,
 600                                    g_param_spec_boolean ("headers-clickable",
 601                                                          P_("Headers Clickable"),
 602                                                          P_("Column headers respond to click events"),
 603                                                          TRUE,
 604                                                          GTK_PARAM_READWRITE));
 605
 606   g_object_class_install_property (o_class,
 607                                    PROP_EXPANDER_COLUMN,
 608                                    g_param_spec_object ("expander-column",
 609                                                         P_("Expander Column"),
 610                                                         P_("Set the column for the expander column"),
 611                                                         GTK_TYPE_TREE_VIEW_COLUMN,
 612                                                         GTK_PARAM_READWRITE));
 613
 614   g_object_class_install_property (o_class,
 615                                    PROP_REORDERABLE,
 616                                    g_param_spec_boolean ("reorderable",
 617                                                          P_("Reorderable"),
 618                                                          P_("View is reorderable"),
 619                                                          FALSE,
 620                                                          GTK_PARAM_READWRITE));
 621
 622   g_object_class_install_property (o_class,
 623                                    PROP_RULES_HINT,
 624                                    g_param_spec_boolean ("rules-hint",
 625                                                          P_("Rules Hint"),
 626                                                          P_("Set a hint to the theme engine to draw rows in alternating colors"),
 627                                                          FALSE,
 628                                                          GTK_PARAM_READWRITE));
 629
 630     g_object_class_install_property (o_class,
 631                                      PROP_ENABLE_SEARCH,
 632                                      g_param_spec_boolean ("enable-search",
 633                                                            P_("Enable Search"),
 634                                                            P_("View allows user to search through columns interactively"),
 635                                                            TRUE,
 636                                                            GTK_PARAM_READWRITE));
 637
 638     g_object_class_install_property (o_class,
 639                                      PROP_SEARCH_COLUMN,
 640                                      g_param_spec_int ("search-column",
 641                                                        P_("Search Column"),
 642                                                        P_("Model column to search through during interactive search"),
 643                                                        -1,
 644                                                        G_MAXINT,
 645                                                        -1,
 646                                                        GTK_PARAM_READWRITE));
 647
 648     /**
 649      * GtkTreeView:fixed-height-mode:
 650      *
 651      * Setting the ::fixed-height-mode property to %TRUE speeds up
 652      * #GtkTreeView by assuming that all rows have the same height.
 653      * Only enable this option if all rows are the same height.
 654      * Please see gtk_tree_view_set_fixed_height_mode() for more
 655      * information on this option.
 656      *
 657      * Since: 2.4
 658      **/
 659     g_object_class_install_property (o_class,
 660                                      PROP_FIXED_HEIGHT_MODE,
 661                                      g_param_spec_boolean ("fixed-height-mode",
 662                                                            P_("Fixed Height Mode"),
 663                                                            P_("Speeds up GtkTreeView by assuming that all rows have the same height"),
 664                                                            FALSE,
 665                                                            GTK_PARAM_READWRITE));
 666
 667     /**
 668      * GtkTreeView:hover-selection:
 669      *
 670      * Enables or disables the hover selection mode of @tree_view.
 671      * Hover selection makes the selected row follow the pointer.
 672      * Currently, this works only for the selection modes
 673      * %GTK_SELECTION_SINGLE and %GTK_SELECTION_BROWSE.
 674      *
 675      * This mode is primarily intended for treeviews in popups, e.g.
 676      * in #GtkComboBox or #GtkEntryCompletion.
 677      *
 678      * Since: 2.6
 679      */
 680     g_object_class_install_property (o_class,
 681                                      PROP_HOVER_SELECTION,
 682                                      g_param_spec_boolean ("hover-selection",
 683                                                            P_("Hover Selection"),
 684                                                            P_("Whether the selection should follow the pointer"),
 685                                                            FALSE,
 686                                                            GTK_PARAM_READWRITE));
 687
 688     /**
 689      * GtkTreeView:hover-expand:
 690      *
 691      * Enables or disables the hover expansion mode of @tree_view.
 692      * Hover expansion makes rows expand or collapse if the pointer moves
 693      * over them.
 694      *
 695      * This mode is primarily intended for treeviews in popups, e.g.
 696      * in #GtkComboBox or #GtkEntryCompletion.
 697      *
 698      * Since: 2.6
 699      */
 700     g_object_class_install_property (o_class,
 701                                      PROP_HOVER_EXPAND,
 702                                      g_param_spec_boolean ("hover-expand",
 703                                                            P_("Hover Expand"),
 704                                                            P_("Whether rows should be expanded/collapsed when the pointer moves over them"),
 705                                                            FALSE,
 706                                                            GTK_PARAM_READWRITE));
 707
 708     /**
 709      * GtkTreeView:show-expanders:
 710      *
 711      * %TRUE if the view has expanders.
 712      *
 713      * Since: 2.12
 714      */
 715     g_object_class_install_property (o_class,
 716                                      PROP_SHOW_EXPANDERS,
 717                                      g_param_spec_boolean ("show-expanders",
 718                                                            P_("Show Expanders"),
 719                                                            P_("View has expanders"),
 720                                                            TRUE,
 721                                                            GTK_PARAM_READWRITE));
 722
 723     /**
 724      * GtkTreeView:level-indentation:
 725      *
 726      * Extra indentation for each level.
 727      *
 728      * Since: 2.12
 729      */
 730     g_object_class_install_property (o_class,
 731                                      PROP_LEVEL_INDENTATION,
 732                                      g_param_spec_int ("level-indentation",
 733                                                        P_("Level Indentation"),
 734                                                        P_("Extra indentation for each level"),
 735                                                        0,
 736                                                        G_MAXINT,
 737                                                        0,
 738                                                        GTK_PARAM_READWRITE));
 739
 740     g_object_class_install_property (o_class,
 741                                      PROP_RUBBER_BANDING,
 742                                      g_param_spec_boolean ("rubber-banding",
 743                                                            P_("Rubber Banding"),
 744                                                            P_("Whether to enable selection of multiple items by dragging the mouse pointer"),
 745                                                            FALSE,
 746                                                            GTK_PARAM_READWRITE));
 747
 748     g_object_class_install_property (o_class,
 749                                      PROP_ENABLE_GRID_LINES,
 750                                      g_param_spec_enum ("enable-grid-lines",
 751                                                         P_("Enable Grid Lines"),
 752                                                         P_("Whether grid lines should be drawn in the tree view"),
 753                                                         GTK_TYPE_TREE_VIEW_GRID_LINES,
 754                                                         GTK_TREE_VIEW_GRID_LINES_NONE,
 755                                                         GTK_PARAM_READWRITE));
 756
 757     g_object_class_install_property (o_class,
 758                                      PROP_ENABLE_TREE_LINES,
 759                                      g_param_spec_boolean ("enable-tree-lines",
 760                                                            P_("Enable Tree Lines"),
 761                                                            P_("Whether tree lines should be drawn in the tree view"),
 762                                                            FALSE,
 763                                                            GTK_PARAM_READWRITE));
 764
 765     g_object_class_install_property (o_class,
 766                                      PROP_TOOLTIP_COLUMN,
 767                                      g_param_spec_int ("tooltip-column",
 768                                                        P_("Tooltip Column"),
 769                                                        P_("The column in the model containing the tooltip texts for the rows"),
 770                                                        -1,
 771                                                        G_MAXINT,
 772                                                        -1,
 773                                                        GTK_PARAM_READWRITE));
 774
 775   /* Style properties */
 776 #define _TREE_VIEW_EXPANDER_SIZE 12
 777 #define _TREE_VIEW_VERTICAL_SEPARATOR 2
 778 #define _TREE_VIEW_HORIZONTAL_SEPARATOR 2
 779
 780   gtk_widget_class_install_style_property (widget_class,
 781                                            g_param_spec_int ("expander-size",
 782                                                              P_("Expander Size"),
 783                                                              P_("Size of the expander arrow"),
 784                                                              0,
 785                                                              G_MAXINT,
 786                                                              _TREE_VIEW_EXPANDER_SIZE,
 787                                                              GTK_PARAM_READABLE));
 788
 789   gtk_widget_class_install_style_property (widget_class,
 790                                            g_param_spec_int ("vertical-separator",
 791                                                              P_("Vertical Separator Width"),
 792                                                              P_("Vertical space between cells.  Must be an even number"),
 793                                                              0,
 794                                                              G_MAXINT,
 795                                                              _TREE_VIEW_VERTICAL_SEPARATOR,
 796                                                              GTK_PARAM_READABLE));
 797
 798   gtk_widget_class_install_style_property (widget_class,
 799                                            g_param_spec_int ("horizontal-separator",
 800                                                              P_("Horizontal Separator Width"),
 801                                                              P_("Horizontal space between cells.  Must be an even number"),
 802                                                              0,
 803                                                              G_MAXINT,
 804                                                              _TREE_VIEW_HORIZONTAL_SEPARATOR,
 805                                                              GTK_PARAM_READABLE));
 806
 807   gtk_widget_class_install_style_property (widget_class,
 808                                            g_param_spec_boolean ("allow-rules",
 809                                                                  P_("Allow Rules"),
 810                                                                  P_("Allow drawing of alternating color rows"),
 811                                                                  TRUE,
 812                                                                  GTK_PARAM_READABLE));
 813
 814   gtk_widget_class_install_style_property (widget_class,
 815                                            g_param_spec_boolean ("indent-expanders",
 816                                                                  P_("Indent Expanders"),
 817                                                                  P_("Make the expanders indented"),
 818                                                                  TRUE,
 819                                                                  GTK_PARAM_READABLE));
 820
 821   gtk_widget_class_install_style_property (widget_class,
 822                                            g_param_spec_boxed ("even-row-color",
 823                                                                P_("Even Row Color"),
 824                                                                P_("Color to use for even rows"),
 825                                                                GDK_TYPE_COLOR,
 826                                                                GTK_PARAM_READABLE));
 827
 828   gtk_widget_class_install_style_property (widget_class,
 829                                            g_param_spec_boxed ("odd-row-color",
 830                                                                P_("Odd Row Color"),
 831                                                                P_("Color to use for odd rows"),
 832                                                                GDK_TYPE_COLOR,
 833                                                                GTK_PARAM_READABLE));
 834
 835   gtk_widget_class_install_style_property (widget_class,
 836                                            g_param_spec_int ("grid-line-width",
 837                                                              P_("Grid line width"),
 838                                                              P_("Width, in pixels, of the tree view grid lines"),
 839                                                              0, G_MAXINT, 1,
 840                                                              GTK_PARAM_READABLE));
 841
 842   gtk_widget_class_install_style_property (widget_class,
 843                                            g_param_spec_int ("tree-line-width",
 844                                                              P_("Tree line width"),
 845                                                              P_("Width, in pixels, of the tree view lines"),
 846                                                              0, G_MAXINT, 1,
 847                                                              GTK_PARAM_READABLE));
 848
 849   gtk_widget_class_install_style_property (widget_class,
 850                                            g_param_spec_string ("grid-line-pattern",
 851                                                                 P_("Grid line pattern"),
 852                                                                 P_("Dash pattern used to draw the tree view grid lines"),
 853                                                                 "\1\1",
 854                                                                 GTK_PARAM_READABLE));
 855
 856   gtk_widget_class_install_style_property (widget_class,
 857                                            g_param_spec_string ("tree-line-pattern",
 858                                                                 P_("Tree line pattern"),
 859                                                                 P_("Dash pattern used to draw the tree view lines"),
 860                                                                 "\1\1",
 861                                                                 GTK_PARAM_READABLE));
 862
 863   /* Signals */
 864   /**
 865    * GtkTreeView::set-scroll-adjustments
 866    * @horizontal: the horizontal #GtkAdjustment
 867    * @vertical: the vertical #GtkAdjustment
 868    *
 869    * Set the scroll adjustments for the tree view. Usually scrolled containers
 870    * like #GtkScrolledWindow will emit this signal to connect two instances
 871    * of #GtkScrollbar to the scroll directions of the #GtkTreeView.
 872    */
 873   widget_class->set_scroll_adjustments_signal =
 874     g_signal_new (I_("set-scroll-adjustments"),
 875                   G_TYPE_FROM_CLASS (o_class),
 876                   G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
 877                   G_STRUCT_OFFSET (GtkTreeViewClass, set_scroll_adjustments),
 878                   NULL, NULL,
 879                   _gtk_marshal_VOID__OBJECT_OBJECT,
 880                   G_TYPE_NONE, 2,
 881                   GTK_TYPE_ADJUSTMENT,
 882                   GTK_TYPE_ADJUSTMENT);
 883
 884   /**
 885    * GtkTreeView::row-activated:
 886    * @tree_view: the object on which the signal is emitted
 887    * @path: the #GtkTreePath for the activated row
 888    * @column: the #GtkTreeViewColumn in which the activation occurred
 889    *
 890    * The "row-activated" signal is emitted when the method
 891    * gtk_tree_view_row_activated() is called or the user double clicks
 892    * a treeview row. It is also emitted when a non-editable row is
 893    * selected and one of the keys: Space, Shift+Space, Return or
 894    * Enter is pressed.
 895    *
 896    * For selection handling refer to the <link linkend="TreeWidget">tree
 897    * widget conceptual overview</link> as well as #GtkTreeSelection.
 898    */
 899   tree_view_signals[ROW_ACTIVATED] =
 900     g_signal_new (I_("row-activated"),
 901                   G_TYPE_FROM_CLASS (o_class),
 902                   G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
 903                   G_STRUCT_OFFSET (GtkTreeViewClass, row_activated),
 904                   NULL, NULL,
 905                   _gtk_marshal_VOID__BOXED_OBJECT,
 906                   G_TYPE_NONE, 2,
 907                   GTK_TYPE_TREE_PATH,
 908                   GTK_TYPE_TREE_VIEW_COLUMN);
 909
 910   /**
 911    * GtkTreeView::test-expand-row:
 912    * @tree_view: the object on which the signal is emitted
 913    * @iter: the tree iter of the row to expand
 914    * @path: a tree path that points to the row
 915    *
 916    * The given row is about to be expanded (show its children nodes). Use this
 917    * signal if you need to control the expandability of individual rows.
 918    *
 919    * Returns: %FALSE to allow expansion, %TRUE to reject
 920    */
 921   tree_view_signals[TEST_EXPAND_ROW] =
 922     g_signal_new (I_("test-expand-row"),
 923                   G_TYPE_FROM_CLASS (o_class),
 924                   G_SIGNAL_RUN_LAST,
 925                   G_STRUCT_OFFSET (GtkTreeViewClass, test_expand_row),
 926                   _gtk_boolean_handled_accumulator, NULL,
 927                   _gtk_marshal_BOOLEAN__BOXED_BOXED,
 928                   G_TYPE_BOOLEAN, 2,
 929                   GTK_TYPE_TREE_ITER,
 930                   GTK_TYPE_TREE_PATH);
 931
 932   /**
 933    * GtkTreeView::test-collapse-row:
 934    * @tree_view: the object on which the signal is emitted
 935    * @iter: the tree iter of the row to collapse
 936    * @path: a tree path that points to the row
 937    *
 938    * The given row is about to be collapsed (hide its children nodes). Use this
 939    * signal if you need to control the collapsibility of individual rows.
 940    *
 941    * Returns: %FALSE to allow collapsing, %TRUE to reject
 942    */
 943   tree_view_signals[TEST_COLLAPSE_ROW] =
 944     g_signal_new (I_("test-collapse-row"),
 945                   G_TYPE_FROM_CLASS (o_class),
 946                   G_SIGNAL_RUN_LAST,
 947                   G_STRUCT_OFFSET (GtkTreeViewClass, test_collapse_row),
 948                   _gtk_boolean_handled_accumulator, NULL,
 949                   _gtk_marshal_BOOLEAN__BOXED_BOXED,
 950                   G_TYPE_BOOLEAN, 2,
 951                   GTK_TYPE_TREE_ITER,
 952                   GTK_TYPE_TREE_PATH);
 953
 954   /**
 955    * GtkTreeView::row-expanded:
 956    * @tree_view: the object on which the signal is emitted
 957    * @iter: the tree iter of the expanded row
 958    * @path: a tree path that points to the row
 959    *
 960    * The given row has been expanded (child nodes are shown).
 961    */
 962   tree_view_signals[ROW_EXPANDED] =
 963     g_signal_new (I_("row-expanded"),
 964                   G_TYPE_FROM_CLASS (o_class),
 965                   G_SIGNAL_RUN_LAST,
 966                   G_STRUCT_OFFSET (GtkTreeViewClass, row_expanded),
 967                   NULL, NULL,
 968                   _gtk_marshal_VOID__BOXED_BOXED,
 969                   G_TYPE_NONE, 2,
 970                   GTK_TYPE_TREE_ITER,
 971                   GTK_TYPE_TREE_PATH);
 972
 973   /**
 974    * GtkTreeView::row-collapsed:
 975    * @tree_view: the object on which the signal is emitted
 976    * @iter: the tree iter of the collapsed row
 977    * @path: a tree path that points to the row
 978    *
 979    * The given row has been collapsed (child nodes are hidden).
 980    */
 981   tree_view_signals[ROW_COLLAPSED] =
 982     g_signal_new (I_("row-collapsed"),
 983                   G_TYPE_FROM_CLASS (o_class),
 984                   G_SIGNAL_RUN_LAST,
 985                   G_STRUCT_OFFSET (GtkTreeViewClass, row_collapsed),
 986                   NULL, NULL,
 987                   _gtk_marshal_VOID__BOXED_BOXED,
 988                   G_TYPE_NONE, 2,
 989                   GTK_TYPE_TREE_ITER,
 990                   GTK_TYPE_TREE_PATH);
 991
 992   /**
 993    * GtkTreeView::columns-changed:
 994    * @tree_view: the object on which the signal is emitted
 995    *
 996    * The number of columns of the treeview has changed.
 997    */
 998   tree_view_signals[COLUMNS_CHANGED] =
 999     g_signal_new (I_("columns-changed"),
1000                   G_TYPE_FROM_CLASS (o_class),
1001                   G_SIGNAL_RUN_LAST,
1002                   G_STRUCT_OFFSET (GtkTreeViewClass, columns_changed),
1003                   NULL, NULL,
1004                   _gtk_marshal_VOID__VOID,
1005                   G_TYPE_NONE, 0);
1006
1007   /**
1008    * GtkTreeView::cursor-changed:
1009    * @tree_view: the object on which the signal is emitted
1010    *
1011    * The position of the cursor (focused cell) has changed.
1012    */
1013   tree_view_signals[CURSOR_CHANGED] =
1014     g_signal_new (I_("cursor-changed"),
1015                   G_TYPE_FROM_CLASS (o_class),
1016                   G_SIGNAL_RUN_LAST,
1017                   G_STRUCT_OFFSET (GtkTreeViewClass, cursor_changed),
1018                   NULL, NULL,
1019                   _gtk_marshal_VOID__VOID,
1020                   G_TYPE_NONE, 0);
1021
1022   tree_view_signals[MOVE_CURSOR] =
1023     g_signal_new (I_("move-cursor"),
1024                   G_TYPE_FROM_CLASS (object_class),
1025                   G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
1026                   G_STRUCT_OFFSET (GtkTreeViewClass, move_cursor),
1027                   NULL, NULL,
1028                   _gtk_marshal_BOOLEAN__ENUM_INT,
1029                   G_TYPE_BOOLEAN, 2,
1030                   GTK_TYPE_MOVEMENT_STEP,
1031                   G_TYPE_INT);
1032
1033   tree_view_signals[SELECT_ALL] =
1034     g_signal_new (I_("select-all"),
1035                   G_TYPE_FROM_CLASS (object_class),
1036                   G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
1037                   G_STRUCT_OFFSET (GtkTreeViewClass, select_all),
1038                   NULL, NULL,
1039                   _gtk_marshal_BOOLEAN__VOID,
1040                   G_TYPE_BOOLEAN, 0);
1041
1042   tree_view_signals[UNSELECT_ALL] =
1043     g_signal_new (I_("unselect-all"),
1044                   G_TYPE_FROM_CLASS (object_class),
1045                   G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
1046                   G_STRUCT_OFFSET (GtkTreeViewClass, unselect_all),
1047                   NULL, NULL,
1048                   _gtk_marshal_BOOLEAN__VOID,
1049                   G_TYPE_BOOLEAN, 0);
1050
1051   tree_view_signals[SELECT_CURSOR_ROW] =
1052     g_signal_new (I_("select-cursor-row"),
1053                   G_TYPE_FROM_CLASS (object_class),
1054                   G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
1055                   G_STRUCT_OFFSET (GtkTreeViewClass, select_cursor_row),
1056                   NULL, NULL,
1057                   _gtk_marshal_BOOLEAN__BOOLEAN,
1058                   G_TYPE_BOOLEAN, 1,
1059                   G_TYPE_BOOLEAN);
1060
1061   tree_view_signals[TOGGLE_CURSOR_ROW] =
1062     g_signal_new (I_("toggle-cursor-row"),
1063                   G_TYPE_FROM_CLASS (object_class),
1064                   G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
1065                   G_STRUCT_OFFSET (GtkTreeViewClass, toggle_cursor_row),
1066                   NULL, NULL,
1067                   _gtk_marshal_BOOLEAN__VOID,
1068                   G_TYPE_BOOLEAN, 0);
1069
1070   tree_view_signals[EXPAND_COLLAPSE_CURSOR_ROW] =
1071     g_signal_new (I_("expand-collapse-cursor-row"),
1072                   G_TYPE_FROM_CLASS (object_class),
1073                   G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
1074                   G_STRUCT_OFFSET (GtkTreeViewClass, expand_collapse_cursor_row),
1075                   NULL, NULL,
1076                   _gtk_marshal_BOOLEAN__BOOLEAN_BOOLEAN_BOOLEAN,
1077                   G_TYPE_BOOLEAN, 3,
1078                   G_TYPE_BOOLEAN,
1079                   G_TYPE_BOOLEAN,
1080                   G_TYPE_BOOLEAN);
1081
1082   tree_view_signals[SELECT_CURSOR_PARENT] =
1083     g_signal_new (I_("select-cursor-parent"),
1084                   G_TYPE_FROM_CLASS (object_class),
1085                   G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
1086                   G_STRUCT_OFFSET (GtkTreeViewClass, select_cursor_parent),
1087                   NULL, NULL,
1088                   _gtk_marshal_BOOLEAN__VOID,
1089                   G_TYPE_BOOLEAN, 0);
1090
1091   tree_view_signals[START_INTERACTIVE_SEARCH] =
1092     g_signal_new (I_("start-interactive-search"),
1093                   G_TYPE_FROM_CLASS (object_class),
1094                   G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
1095                   G_STRUCT_OFFSET (GtkTreeViewClass, start_interactive_search),
1096                   NULL, NULL,
1097                   _gtk_marshal_BOOLEAN__VOID,
1098                   G_TYPE_BOOLEAN, 0);
1099
1100   /* Key bindings */
1101   gtk_tree_view_add_move_binding (binding_set, GDK_KEY_Up, 0, TRUE,
1102                                   GTK_MOVEMENT_DISPLAY_LINES, -1);
1103   gtk_tree_view_add_move_binding (binding_set, GDK_KEY_KP_Up, 0, TRUE,
1104                                   GTK_MOVEMENT_DISPLAY_LINES, -1);
1105
1106   gtk_tree_view_add_move_binding (binding_set, GDK_KEY_Down, 0, TRUE,
1107                                   GTK_MOVEMENT_DISPLAY_LINES, 1);
1108   gtk_tree_view_add_move_binding (binding_set, GDK_KEY_KP_Down, 0, TRUE,
1109                                   GTK_MOVEMENT_DISPLAY_LINES, 1);
1110
1111   gtk_tree_view_add_move_binding (binding_set, GDK_KEY_p, GDK_CONTROL_MASK, FALSE,
1112                                   GTK_MOVEMENT_DISPLAY_LINES, -1);
1113
1114   gtk_tree_view_add_move_binding (binding_set, GDK_KEY_n, GDK_CONTROL_MASK, FALSE,
1115                                   GTK_MOVEMENT_DISPLAY_LINES, 1);
1116
1117   gtk_tree_view_add_move_binding (binding_set, GDK_KEY_Home, 0, TRUE,
1118                                   GTK_MOVEMENT_BUFFER_ENDS, -1);
1119   gtk_tree_view_add_move_binding (binding_set, GDK_KEY_KP_Home, 0, TRUE,
1120                                   GTK_MOVEMENT_BUFFER_ENDS, -1);
1121
1122   gtk_tree_view_add_move_binding (binding_set, GDK_KEY_End, 0, TRUE,
1123                                   GTK_MOVEMENT_BUFFER_ENDS, 1);
1124   gtk_tree_view_add_move_binding (binding_set, GDK_KEY_KP_End, 0, TRUE,
1125                                   GTK_MOVEMENT_BUFFER_ENDS, 1);
1126
1127   gtk_tree_view_add_move_binding (binding_set, GDK_KEY_Page_Up, 0, TRUE,
1128                                   GTK_MOVEMENT_PAGES, -1);
1129   gtk_tree_view_add_move_binding (binding_set, GDK_KEY_KP_Page_Up, 0, TRUE,
1130                                   GTK_MOVEMENT_PAGES, -1);
1131
1132   gtk_tree_view_add_move_binding (binding_set, GDK_KEY_Page_Down, 0, TRUE,
1133                                   GTK_MOVEMENT_PAGES, 1);
1134   gtk_tree_view_add_move_binding (binding_set, GDK_KEY_KP_Page_Down, 0, TRUE,
1135                                   GTK_MOVEMENT_PAGES, 1);
1136
1137
1138   gtk_binding_entry_add_signal (binding_set, GDK_KEY_Right, 0, "move-cursor", 2,
1139                                 G_TYPE_ENUM, GTK_MOVEMENT_VISUAL_POSITIONS,
1140                                 G_TYPE_INT, 1);
1141
1142   gtk_binding_entry_add_signal (binding_set, GDK_KEY_Left, 0, "move-cursor", 2,
1143                                 G_TYPE_ENUM, GTK_MOVEMENT_VISUAL_POSITIONS,
1144                                 G_TYPE_INT, -1);
1145
1146   gtk_binding_entry_add_signal (binding_set, GDK_KEY_KP_Right, 0, "move-cursor", 2,
1147                                 G_TYPE_ENUM, GTK_MOVEMENT_VISUAL_POSITIONS,
1148                                 G_TYPE_INT, 1);
1149
1150   gtk_binding_entry_add_signal (binding_set, GDK_KEY_KP_Left, 0, "move-cursor", 2,
1151                                 G_TYPE_ENUM, GTK_MOVEMENT_VISUAL_POSITIONS,
1152                                 G_TYPE_INT, -1);
1153
1154   gtk_binding_entry_add_signal (binding_set, GDK_KEY_Right, GDK_CONTROL_MASK,
1155                                 "move-cursor", 2,
1156                                 G_TYPE_ENUM, GTK_MOVEMENT_VISUAL_POSITIONS,
1157                                 G_TYPE_INT, 1);
1158
1159   gtk_binding_entry_add_signal (binding_set, GDK_KEY_Left, GDK_CONTROL_MASK,
1160                                 "move-cursor", 2,
1161                                 G_TYPE_ENUM, GTK_MOVEMENT_VISUAL_POSITIONS,
1162                                 G_TYPE_INT, -1);
1163
1164   gtk_binding_entry_add_signal (binding_set, GDK_KEY_KP_Right, GDK_CONTROL_MASK,
1165                                 "move-cursor", 2,
1166                                 G_TYPE_ENUM, GTK_MOVEMENT_VISUAL_POSITIONS,
1167                                 G_TYPE_INT, 1);
1168
1169   gtk_binding_entry_add_signal (binding_set, GDK_KEY_KP_Left, GDK_CONTROL_MASK,
1170                                 "move-cursor", 2,
1171                                 G_TYPE_ENUM, GTK_MOVEMENT_VISUAL_POSITIONS,
1172                                 G_TYPE_INT, -1);
1173
1174   gtk_binding_entry_add_signal (binding_set, GDK_KEY_space, GDK_CONTROL_MASK, "toggle-cursor-row", 0);
1175   gtk_binding_entry_add_signal (binding_set, GDK_KEY_KP_Space, GDK_CONTROL_MASK, "toggle-cursor-row", 0);
1176
1177   gtk_binding_entry_add_signal (binding_set, GDK_KEY_a, GDK_CONTROL_MASK, "select-all", 0);
1178   gtk_binding_entry_add_signal (binding_set, GDK_KEY_slash, GDK_CONTROL_MASK, "select-all", 0);
1179
1180   gtk_binding_entry_add_signal (binding_set, GDK_KEY_A, GDK_CONTROL_MASK | GDK_SHIFT_MASK, "unselect-all", 0);
1181   gtk_binding_entry_add_signal (binding_set, GDK_KEY_backslash, GDK_CONTROL_MASK, "unselect-all", 0);
1182
1183   gtk_binding_entry_add_signal (binding_set, GDK_KEY_space, GDK_SHIFT_MASK, "select-cursor-row", 1,
1184                                 G_TYPE_BOOLEAN, TRUE);
1185   gtk_binding_entry_add_signal (binding_set, GDK_KEY_KP_Space, GDK_SHIFT_MASK, "select-cursor-row", 1,
1186                                 G_TYPE_BOOLEAN, TRUE);
1187
1188   gtk_binding_entry_add_signal (binding_set, GDK_KEY_space, 0, "select-cursor-row", 1,
1189                                 G_TYPE_BOOLEAN, TRUE);
1190   gtk_binding_entry_add_signal (binding_set, GDK_KEY_KP_Space, 0, "select-cursor-row", 1,
1191                                 G_TYPE_BOOLEAN, TRUE);
1192   gtk_binding_entry_add_signal (binding_set, GDK_KEY_Return, 0, "select-cursor-row", 1,
1193                                 G_TYPE_BOOLEAN, TRUE);
1194   gtk_binding_entry_add_signal (binding_set, GDK_KEY_ISO_Enter, 0, "select-cursor-row", 1,
1195                                 G_TYPE_BOOLEAN, TRUE);
1196   gtk_binding_entry_add_signal (binding_set, GDK_KEY_KP_Enter, 0, "select-cursor-row", 1,
1197                                 G_TYPE_BOOLEAN, TRUE);
1198
1199   /* expand and collapse rows */
1200   gtk_binding_entry_add_signal (binding_set, GDK_KEY_plus, 0, "expand-collapse-cursor-row", 3,
1201                                 G_TYPE_BOOLEAN, TRUE,
1202                                 G_TYPE_BOOLEAN, TRUE,
1203                                 G_TYPE_BOOLEAN, FALSE);
1204
1205   gtk_binding_entry_add_signal (binding_set, GDK_KEY_asterisk, 0,
1206                                 "expand-collapse-cursor-row", 3,
1207                                 G_TYPE_BOOLEAN, TRUE,
1208                                 G_TYPE_BOOLEAN, TRUE,
1209                                 G_TYPE_BOOLEAN, TRUE);
1210   gtk_binding_entry_add_signal (binding_set, GDK_KEY_KP_Multiply, 0,
1211                                 "expand-collapse-cursor-row", 3,
1212                                 G_TYPE_BOOLEAN, TRUE,
1213                                 G_TYPE_BOOLEAN, TRUE,
1214                                 G_TYPE_BOOLEAN, TRUE);
1215
1216   gtk_binding_entry_add_signal (binding_set, GDK_KEY_slash, 0,
1217                                 "expand-collapse-cursor-row", 3,
1218                                 G_TYPE_BOOLEAN, TRUE,
1219                                 G_TYPE_BOOLEAN, FALSE,
1220                                 G_TYPE_BOOLEAN, FALSE);
1221   gtk_binding_entry_add_signal (binding_set, GDK_KEY_KP_Divide, 0,
1222                                 "expand-collapse-cursor-row", 3,
1223                                 G_TYPE_BOOLEAN, TRUE,
1224                                 G_TYPE_BOOLEAN, FALSE,
1225                                 G_TYPE_BOOLEAN, FALSE);
1226
1227   /* Not doable on US keyboards */
1228   gtk_binding_entry_add_signal (binding_set, GDK_KEY_plus, GDK_SHIFT_MASK, "expand-collapse-cursor-row", 3,
1229                                 G_TYPE_BOOLEAN, TRUE,
1230                                 G_TYPE_BOOLEAN, TRUE,
1231                                 G_TYPE_BOOLEAN, TRUE);
1232   gtk_binding_entry_add_signal (binding_set, GDK_KEY_KP_Add, 0, "expand-collapse-cursor-row", 3,
1233                                 G_TYPE_BOOLEAN, TRUE,
1234                                 G_TYPE_BOOLEAN, TRUE,
1235                                 G_TYPE_BOOLEAN, FALSE);
1236   gtk_binding_entry_add_signal (binding_set, GDK_KEY_KP_Add, GDK_SHIFT_MASK, "expand-collapse-cursor-row", 3,
1237                                 G_TYPE_BOOLEAN, TRUE,
1238                                 G_TYPE_BOOLEAN, TRUE,
1239                                 G_TYPE_BOOLEAN, TRUE);
1240   gtk_binding_entry_add_signal (binding_set, GDK_KEY_KP_Add, GDK_SHIFT_MASK, "expand-collapse-cursor-row", 3,
1241                                 G_TYPE_BOOLEAN, TRUE,
1242                                 G_TYPE_BOOLEAN, TRUE,
1243                                 G_TYPE_BOOLEAN, TRUE);
1244   gtk_binding_entry_add_signal (binding_set, GDK_KEY_Right, GDK_SHIFT_MASK,
1245                                 "expand-collapse-cursor-row", 3,
1246                                 G_TYPE_BOOLEAN, FALSE,
1247                                 G_TYPE_BOOLEAN, TRUE,
1248                                 G_TYPE_BOOLEAN, TRUE);
1249   gtk_binding_entry_add_signal (binding_set, GDK_KEY_KP_Right, GDK_SHIFT_MASK,
1250                                 "expand-collapse-cursor-row", 3,
1251                                 G_TYPE_BOOLEAN, FALSE,
1252                                 G_TYPE_BOOLEAN, TRUE,
1253                                 G_TYPE_BOOLEAN, TRUE);
1254   gtk_binding_entry_add_signal (binding_set, GDK_KEY_Right,
1255                                 GDK_CONTROL_MASK | GDK_SHIFT_MASK,
1256                                 "expand-collapse-cursor-row", 3,
1257                                 G_TYPE_BOOLEAN, FALSE,
1258                                 G_TYPE_BOOLEAN, TRUE,
1259                                 G_TYPE_BOOLEAN, TRUE);
1260   gtk_binding_entry_add_signal (binding_set, GDK_KEY_KP_Right,
1261                                 GDK_CONTROL_MASK | GDK_SHIFT_MASK,
1262                                 "expand-collapse-cursor-row", 3,
1263                                 G_TYPE_BOOLEAN, FALSE,
1264                                 G_TYPE_BOOLEAN, TRUE,
1265                                 G_TYPE_BOOLEAN, TRUE);
1266
1267   gtk_binding_entry_add_signal (binding_set, GDK_KEY_minus, 0, "expand-collapse-cursor-row", 3,
1268                                 G_TYPE_BOOLEAN, TRUE,
1269                                 G_TYPE_BOOLEAN, FALSE,
1270                                 G_TYPE_BOOLEAN, FALSE);
1271   gtk_binding_entry_add_signal (binding_set, GDK_KEY_minus, GDK_SHIFT_MASK, "expand-collapse-cursor-row", 3,
1272                                 G_TYPE_BOOLEAN, TRUE,
1273                                 G_TYPE_BOOLEAN, FALSE,
1274                                 G_TYPE_BOOLEAN, TRUE);
1275   gtk_binding_entry_add_signal (binding_set, GDK_KEY_KP_Subtract, 0, "expand-collapse-cursor-row", 3,
1276                                 G_TYPE_BOOLEAN, TRUE,
1277                                 G_TYPE_BOOLEAN, FALSE,
1278                                 G_TYPE_BOOLEAN, FALSE);
1279   gtk_binding_entry_add_signal (binding_set, GDK_KEY_KP_Subtract, GDK_SHIFT_MASK, "expand-collapse-cursor-row", 3,
1280                                 G_TYPE_BOOLEAN, TRUE,
1281                                 G_TYPE_BOOLEAN, FALSE,
1282                                 G_TYPE_BOOLEAN, TRUE);
1283   gtk_binding_entry_add_signal (binding_set, GDK_KEY_Left, GDK_SHIFT_MASK,
1284                                 "expand-collapse-cursor-row", 3,
1285                                 G_TYPE_BOOLEAN, FALSE,
1286                                 G_TYPE_BOOLEAN, FALSE,
1287                                 G_TYPE_BOOLEAN, TRUE);
1288   gtk_binding_entry_add_signal (binding_set, GDK_KEY_KP_Left, GDK_SHIFT_MASK,
1289                                 "expand-collapse-cursor-row", 3,
1290                                 G_TYPE_BOOLEAN, FALSE,
1291                                 G_TYPE_BOOLEAN, FALSE,
1292                                 G_TYPE_BOOLEAN, TRUE);
1293   gtk_binding_entry_add_signal (binding_set, GDK_KEY_Left,
1294                                 GDK_CONTROL_MASK | GDK_SHIFT_MASK,
1295                                 "expand-collapse-cursor-row", 3,
1296                                 G_TYPE_BOOLEAN, FALSE,
1297                                 G_TYPE_BOOLEAN, FALSE,
1298                                 G_TYPE_BOOLEAN, TRUE);
1299   gtk_binding_entry_add_signal (binding_set, GDK_KEY_KP_Left,
1300                                 GDK_CONTROL_MASK | GDK_SHIFT_MASK,
1301                                 "expand-collapse-cursor-row", 3,
1302                                 G_TYPE_BOOLEAN, FALSE,
1303                                 G_TYPE_BOOLEAN, FALSE,
1304                                 G_TYPE_BOOLEAN, TRUE);
1305
1306   gtk_binding_entry_add_signal (binding_set, GDK_KEY_BackSpace, 0, "select-cursor-parent", 0);
1307   gtk_binding_entry_add_signal (binding_set, GDK_KEY_BackSpace, GDK_CONTROL_MASK, "select-cursor-parent", 0);
1308
1309   gtk_binding_entry_add_signal (binding_set, GDK_KEY_f, GDK_CONTROL_MASK, "start-interactive-search", 0);
1310
1311   gtk_binding_entry_add_signal (binding_set, GDK_KEY_F, GDK_CONTROL_MASK, "start-interactive-search", 0);
1312
1313   g_type_class_add_private (o_class, sizeof (GtkTreeViewPrivate));
1314 }
1315
1316 static void
1317 gtk_tree_view_init (GtkTreeView *tree_view)
1318 {
1319   tree_view->priv = G_TYPE_INSTANCE_GET_PRIVATE (tree_view, GTK_TYPE_TREE_VIEW, GtkTreeViewPrivate);
1320
1321   gtk_widget_set_can_focus (GTK_WIDGET (tree_view), TRUE);
1322   gtk_widget_set_redraw_on_allocate (GTK_WIDGET (tree_view), FALSE);
1323
1324   tree_view->priv->flags =  GTK_TREE_VIEW_SHOW_EXPANDERS
1325                             | GTK_TREE_VIEW_DRAW_KEYFOCUS
1326                             | GTK_TREE_VIEW_HEADERS_VISIBLE;
1327
1328   /* We need some padding */
1329   tree_view->priv->dy = 0;
1330   tree_view->priv->cursor_offset = 0;
1331   tree_view->priv->n_columns = 0;
1332   tree_view->priv->header_height = 1;
1333   tree_view->priv->x_drag = 0;
1334   tree_view->priv->drag_pos = -1;
1335   tree_view->priv->header_has_focus = FALSE;
1336   tree_view->priv->pressed_button = -1;
1337   tree_view->priv->press_start_x = -1;
1338   tree_view->priv->press_start_y = -1;
1339   tree_view->priv->reorderable = FALSE;
1340   tree_view->priv->presize_handler_timer = 0;
1341   tree_view->priv->scroll_sync_timer = 0;
1342   tree_view->priv->fixed_height = -1;
1343   tree_view->priv->fixed_height_mode = FALSE;
1344   tree_view->priv->fixed_height_check = 0;
1345   gtk_tree_view_set_adjustments (tree_view, NULL, NULL);
1346   tree_view->priv->selection = _gtk_tree_selection_new_with_tree_view (tree_view);
1347   tree_view->priv->enable_search = TRUE;
1348   tree_view->priv->search_column = -1;
1349   tree_view->priv->search_position_func = gtk_tree_view_search_position_func;
1350   tree_view->priv->search_equal_func = gtk_tree_view_search_equal_func;
1351   tree_view->priv->search_custom_entry_set = FALSE;
1352   tree_view->priv->typeselect_flush_timeout = 0;
1353   tree_view->priv->init_hadjust_value = TRUE;
1354   tree_view->priv->width = 0;
1355
1356   tree_view->priv->hover_selection = FALSE;
1357   tree_view->priv->hover_expand = FALSE;
1358
1359   tree_view->priv->level_indentation = 0;
1360
1361   tree_view->priv->rubber_banding_enable = FALSE;
1362
1363   tree_view->priv->grid_lines = GTK_TREE_VIEW_GRID_LINES_NONE;
1364   tree_view->priv->tree_lines_enabled = FALSE;
1365
1366   tree_view->priv->tooltip_column = -1;
1367
1368   tree_view->priv->post_validation_flag = FALSE;
1369
1370   tree_view->priv->last_button_x = -1;
1371   tree_view->priv->last_button_y = -1;
1372
1373   tree_view->priv->event_last_x = -10000;
1374   tree_view->priv->event_last_y = -10000;
1375 }
1376
1377 \f
1378
1379 /* GObject Methods
1380  */
1381
1382 static void
1383 gtk_tree_view_set_property (GObject         *object,
1384                             guint            prop_id,
1385                             const GValue    *value,
1386                             GParamSpec      *pspec)
1387 {
1388   GtkTreeView *tree_view;
1389
1390   tree_view = GTK_TREE_VIEW (object);
1391
1392   switch (prop_id)
1393     {
1394     case PROP_MODEL:
1395       gtk_tree_view_set_model (tree_view, g_value_get_object (value));
1396       break;
1397     case PROP_HADJUSTMENT:
1398       gtk_tree_view_set_hadjustment (tree_view, g_value_get_object (value));
1399       break;
1400     case PROP_VADJUSTMENT:
1401       gtk_tree_view_set_vadjustment (tree_view, g_value_get_object (value));
1402       break;
1403     case PROP_HEADERS_VISIBLE:
1404       gtk_tree_view_set_headers_visible (tree_view, g_value_get_boolean (value));
1405       break;
1406     case PROP_HEADERS_CLICKABLE:
1407       gtk_tree_view_set_headers_clickable (tree_view, g_value_get_boolean (value));
1408       break;
1409     case PROP_EXPANDER_COLUMN:
1410       gtk_tree_view_set_expander_column (tree_view, g_value_get_object (value));
1411       break;
1412     case PROP_REORDERABLE:
1413       gtk_tree_view_set_reorderable (tree_view, g_value_get_boolean (value));
1414       break;
1415     case PROP_RULES_HINT:
1416       gtk_tree_view_set_rules_hint (tree_view, g_value_get_boolean (value));
1417       break;
1418     case PROP_ENABLE_SEARCH:
1419       gtk_tree_view_set_enable_search (tree_view, g_value_get_boolean (value));
1420       break;
1421     case PROP_SEARCH_COLUMN:
1422       gtk_tree_view_set_search_column (tree_view, g_value_get_int (value));
1423       break;
1424     case PROP_FIXED_HEIGHT_MODE:
1425       gtk_tree_view_set_fixed_height_mode (tree_view, g_value_get_boolean (value));
1426       break;
1427     case PROP_HOVER_SELECTION:
1428       tree_view->priv->hover_selection = g_value_get_boolean (value);
1429       break;
1430     case PROP_HOVER_EXPAND:
1431       tree_view->priv->hover_expand = g_value_get_boolean (value);
1432       break;
1433     case PROP_SHOW_EXPANDERS:
1434       gtk_tree_view_set_show_expanders (tree_view, g_value_get_boolean (value));
1435       break;
1436     case PROP_LEVEL_INDENTATION:
1437       tree_view->priv->level_indentation = g_value_get_int (value);
1438       break;
1439     case PROP_RUBBER_BANDING:
1440       tree_view->priv->rubber_banding_enable = g_value_get_boolean (value);
1441       break;
1442     case PROP_ENABLE_GRID_LINES:
1443       gtk_tree_view_set_grid_lines (tree_view, g_value_get_enum (value));
1444       break;
1445     case PROP_ENABLE_TREE_LINES:
1446       gtk_tree_view_set_enable_tree_lines (tree_view, g_value_get_boolean (value));
1447       break;
1448     case PROP_TOOLTIP_COLUMN:
1449       gtk_tree_view_set_tooltip_column (tree_view, g_value_get_int (value));
1450       break;
1451     default:
1452       G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
1453       break;
1454     }
1455 }
1456
1457 static void
1458 gtk_tree_view_get_property (GObject    *object,
1459                             guint       prop_id,
1460                             GValue     *value,
1461                             GParamSpec *pspec)
1462 {
1463   GtkTreeView *tree_view;
1464
1465   tree_view = GTK_TREE_VIEW (object);
1466
1467   switch (prop_id)
1468     {
1469     case PROP_MODEL:
1470       g_value_set_object (value, tree_view->priv->model);
1471       break;
1472     case PROP_HADJUSTMENT:
1473       g_value_set_object (value, tree_view->priv->hadjustment);
1474       break;
1475     case PROP_VADJUSTMENT:
1476       g_value_set_object (value, tree_view->priv->vadjustment);
1477       break;
1478     case PROP_HEADERS_VISIBLE:
1479       g_value_set_boolean (value, gtk_tree_view_get_headers_visible (tree_view));
1480       break;
1481     case PROP_HEADERS_CLICKABLE:
1482       g_value_set_boolean (value, gtk_tree_view_get_headers_clickable (tree_view));
1483       break;
1484     case PROP_EXPANDER_COLUMN:
1485       g_value_set_object (value, tree_view->priv->expander_column);
1486       break;
1487     case PROP_REORDERABLE:
1488       g_value_set_boolean (value, tree_view->priv->reorderable);
1489       break;
1490     case PROP_RULES_HINT:
1491       g_value_set_boolean (value, tree_view->priv->has_rules);
1492       break;
1493     case PROP_ENABLE_SEARCH:
1494       g_value_set_boolean (value, tree_view->priv->enable_search);
1495       break;
1496     case PROP_SEARCH_COLUMN:
1497       g_value_set_int (value, tree_view->priv->search_column);
1498       break;
1499     case PROP_FIXED_HEIGHT_MODE:
1500       g_value_set_boolean (value, tree_view->priv->fixed_height_mode);
1501       break;
1502     case PROP_HOVER_SELECTION:
1503       g_value_set_boolean (value, tree_view->priv->hover_selection);
1504       break;
1505     case PROP_HOVER_EXPAND:
1506       g_value_set_boolean (value, tree_view->priv->hover_expand);
1507       break;
1508     case PROP_SHOW_EXPANDERS:
1509       g_value_set_boolean (value, GTK_TREE_VIEW_FLAG_SET (tree_view, GTK_TREE_VIEW_SHOW_EXPANDERS));
1510       break;
1511     case PROP_LEVEL_INDENTATION:
1512       g_value_set_int (value, tree_view->priv->level_indentation);
1513       break;
1514     case PROP_RUBBER_BANDING:
1515       g_value_set_boolean (value, tree_view->priv->rubber_banding_enable);
1516       break;
1517     case PROP_ENABLE_GRID_LINES:
1518       g_value_set_enum (value, tree_view->priv->grid_lines);
1519       break;
1520     case PROP_ENABLE_TREE_LINES:
1521       g_value_set_boolean (value, tree_view->priv->tree_lines_enabled);
1522       break;
1523     case PROP_TOOLTIP_COLUMN:
1524       g_value_set_int (value, tree_view->priv->tooltip_column);
1525       break;
1526     default:
1527       G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
1528       break;
1529     }
1530 }
1531
1532 static void
1533 gtk_tree_view_finalize (GObject *object)
1534 {
1535   G_OBJECT_CLASS (gtk_tree_view_parent_class)->finalize (object);
1536 }
1537
1538
1539 static GtkBuildableIface *parent_buildable_iface;
1540
1541 static void
1542 gtk_tree_view_buildable_init (GtkBuildableIface *iface)
1543 {
1544   parent_buildable_iface = g_type_interface_peek_parent (iface);
1545   iface->add_child = gtk_tree_view_buildable_add_child;
1546   iface->get_internal_child = gtk_tree_view_buildable_get_internal_child;
1547 }
1548
1549 static void
1550 gtk_tree_view_buildable_add_child (GtkBuildable *tree_view,
1551                                    GtkBuilder  *builder,
1552                                    GObject     *child,
1553                                    const gchar *type)
1554 {
1555   gtk_tree_view_append_column (GTK_TREE_VIEW (tree_view), GTK_TREE_VIEW_COLUMN (child));
1556 }
1557
1558 static GObject *
1559 gtk_tree_view_buildable_get_internal_child (GtkBuildable      *buildable,
1560                                             GtkBuilder        *builder,
1561                                             const gchar       *childname)
1562 {
1563     if (strcmp (childname, "selection") == 0)
1564       return G_OBJECT (GTK_TREE_VIEW (buildable)->priv->selection);
1565
1566     return parent_buildable_iface->get_internal_child (buildable,
1567                                                        builder,
1568                                                        childname);
1569 }
1570
1571 /* GtkObject Methods
1572  */
1573
1574 static void
1575 gtk_tree_view_free_rbtree (GtkTreeView *tree_view)
1576 {
1577   _gtk_rbtree_free (tree_view->priv->tree);
1578
1579   tree_view->priv->tree = NULL;
1580   tree_view->priv->button_pressed_node = NULL;
1581   tree_view->priv->button_pressed_tree = NULL;
1582   tree_view->priv->prelight_tree = NULL;
1583   tree_view->priv->prelight_node = NULL;
1584   tree_view->priv->expanded_collapsed_node = NULL;
1585   tree_view->priv->expanded_collapsed_tree = NULL;
1586 }
1587
1588 static void
1589 gtk_tree_view_destroy (GtkObject *object)
1590 {
1591   GtkTreeView *tree_view = GTK_TREE_VIEW (object);
1592   GList *list;
1593
1594   gtk_tree_view_stop_editing (tree_view, TRUE);
1595
1596   if (tree_view->priv->columns != NULL)
1597     {
1598       list = tree_view->priv->columns;
1599       while (list)
1600         {
1601           GtkTreeViewColumn *column;
1602           column = GTK_TREE_VIEW_COLUMN (list->data);
1603           list = list->next;
1604           gtk_tree_view_remove_column (tree_view, column);
1605         }
1606       tree_view->priv->columns = NULL;
1607     }
1608
1609   if (tree_view->priv->tree != NULL)
1610     {
1611       gtk_tree_view_unref_and_check_selection_tree (tree_view, tree_view->priv->tree);
1612
1613       gtk_tree_view_free_rbtree (tree_view);
1614     }
1615
1616   if (tree_view->priv->selection != NULL)
1617     {
1618       _gtk_tree_selection_set_tree_view (tree_view->priv->selection, NULL);
1619       g_object_unref (tree_view->priv->selection);
1620       tree_view->priv->selection = NULL;
1621     }
1622
1623   if (tree_view->priv->scroll_to_path != NULL)
1624     {
1625       gtk_tree_row_reference_free (tree_view->priv->scroll_to_path);
1626       tree_view->priv->scroll_to_path = NULL;
1627     }
1628
1629   if (tree_view->priv->drag_dest_row != NULL)
1630     {
1631       gtk_tree_row_reference_free (tree_view->priv->drag_dest_row);
1632       tree_view->priv->drag_dest_row = NULL;
1633     }
1634
1635   if (tree_view->priv->top_row != NULL)
1636     {
1637       gtk_tree_row_reference_free (tree_view->priv->top_row);
1638       tree_view->priv->top_row = NULL;
1639     }
1640
1641   if (tree_view->priv->column_drop_func_data &&
1642       tree_view->priv->column_drop_func_data_destroy)
1643     {
1644       tree_view->priv->column_drop_func_data_destroy (tree_view->priv->column_drop_func_data);
1645       tree_view->priv->column_drop_func_data = NULL;
1646     }
1647
1648   if (tree_view->priv->destroy_count_destroy &&
1649       tree_view->priv->destroy_count_data)
1650     {
1651       tree_view->priv->destroy_count_destroy (tree_view->priv->destroy_count_data);
1652       tree_view->priv->destroy_count_data = NULL;
1653     }
1654
1655   gtk_tree_row_reference_free (tree_view->priv->cursor);
1656   tree_view->priv->cursor = NULL;
1657
1658   gtk_tree_row_reference_free (tree_view->priv->anchor);
1659   tree_view->priv->anchor = NULL;
1660
1661   /* destroy interactive search dialog */
1662   if (tree_view->priv->search_window)
1663     {
1664       gtk_widget_destroy (tree_view->priv->search_window);
1665       tree_view->priv->search_window = NULL;
1666       tree_view->priv->search_entry = NULL;
1667       if (tree_view->priv->typeselect_flush_timeout)
1668         {
1669           g_source_remove (tree_view->priv->typeselect_flush_timeout);
1670           tree_view->priv->typeselect_flush_timeout = 0;
1671         }
1672     }
1673
1674   if (tree_view->priv->search_destroy && tree_view->priv->search_user_data)
1675     {
1676       tree_view->priv->search_destroy (tree_view->priv->search_user_data);
1677       tree_view->priv->search_user_data = NULL;
1678     }
1679
1680   if (tree_view->priv->search_position_destroy && tree_view->priv->search_position_user_data)
1681     {
1682       tree_view->priv->search_position_destroy (tree_view->priv->search_position_user_data);
1683       tree_view->priv->search_position_user_data = NULL;
1684     }
1685
1686   if (tree_view->priv->row_separator_destroy && tree_view->priv->row_separator_data)
1687     {
1688       tree_view->priv->row_separator_destroy (tree_view->priv->row_separator_data);
1689       tree_view->priv->row_separator_data = NULL;
1690     }
1691
1692   gtk_tree_view_set_model (tree_view, NULL);
1693
1694   if (tree_view->priv->hadjustment)
1695     {
1696       g_object_unref (tree_view->priv->hadjustment);
1697       tree_view->priv->hadjustment = NULL;
1698     }
1699   if (tree_view->priv->vadjustment)
1700     {
1701       g_object_unref (tree_view->priv->vadjustment);
1702       tree_view->priv->vadjustment = NULL;
1703     }
1704
1705   GTK_OBJECT_CLASS (gtk_tree_view_parent_class)->destroy (object);
1706 }
1707
1708 \f
1709
1710 /* GtkWidget Methods
1711  */
1712
1713 /* GtkWidget::map helper */
1714 static void
1715 gtk_tree_view_map_buttons (GtkTreeView *tree_view)
1716 {
1717   GList *list;
1718
1719   g_return_if_fail (gtk_widget_get_mapped (GTK_WIDGET (tree_view)));
1720
1721   if (GTK_TREE_VIEW_FLAG_SET (tree_view, GTK_TREE_VIEW_HEADERS_VISIBLE))
1722     {
1723       GtkTreeViewColumn *column;
1724
1725       for (list = tree_view->priv->columns; list; list = list->next)
1726         {
1727           column = list->data;
1728           if (gtk_widget_get_visible (column->button) &&
1729               !gtk_widget_get_mapped (column->button))
1730             gtk_widget_map (column->button);
1731         }
1732       for (list = tree_view->priv->columns; list; list = list->next)
1733         {
1734           column = list->data;
1735           if (column->visible == FALSE)
1736             continue;
1737           if (column->resizable)
1738             {
1739               gdk_window_raise (column->window);
1740               gdk_window_show (column->window);
1741             }
1742           else
1743             gdk_window_hide (column->window);
1744         }
1745       gdk_window_show (tree_view->priv->header_window);
1746     }
1747 }
1748
1749 static void
1750 gtk_tree_view_map (GtkWidget *widget)
1751 {
1752   GtkTreeView *tree_view = GTK_TREE_VIEW (widget);
1753   GList *tmp_list;
1754
1755   gtk_widget_set_mapped (widget, TRUE);
1756
1757   tmp_list = tree_view->priv->children;
1758   while (tmp_list)
1759     {
1760       GtkTreeViewChild *child = tmp_list->data;
1761       tmp_list = tmp_list->next;
1762
1763       if (gtk_widget_get_visible (child->widget))
1764         {
1765           if (!gtk_widget_get_mapped (child->widget))
1766             gtk_widget_map (child->widget);
1767         }
1768     }
1769   gdk_window_show (tree_view->priv->bin_window);
1770
1771   gtk_tree_view_map_buttons (tree_view);
1772
1773   gdk_window_show (gtk_widget_get_window (widget));
1774 }
1775
1776 static void
1777 gtk_tree_view_realize (GtkWidget *widget)
1778 {
1779   GtkAllocation allocation;
1780   GtkStyle *style;
1781   GtkTreeView *tree_view = GTK_TREE_VIEW (widget);
1782   GdkWindow *window;
1783   GdkWindowAttr attributes;
1784   GList *tmp_list;
1785   gint attributes_mask;
1786
1787   gtk_widget_set_realized (widget, TRUE);
1788
1789   gtk_widget_get_allocation (widget, &allocation);
1790
1791   /* Make the main, clipping window */
1792   attributes.window_type = GDK_WINDOW_CHILD;
1793   attributes.x = allocation.x;
1794   attributes.y = allocation.y;
1795   attributes.width = allocation.width;
1796   attributes.height = allocation.height;
1797   attributes.wclass = GDK_INPUT_OUTPUT;
1798   attributes.visual = gtk_widget_get_visual (widget);
1799   attributes.colormap = gtk_widget_get_colormap (widget);
1800   attributes.event_mask = GDK_VISIBILITY_NOTIFY_MASK;
1801
1802   attributes_mask = GDK_WA_X | GDK_WA_Y | GDK_WA_VISUAL | GDK_WA_COLORMAP;
1803
1804   window = gdk_window_new (gtk_widget_get_parent_window (widget),
1805                            &attributes, attributes_mask);
1806   gtk_widget_set_window (widget, window);
1807   gdk_window_set_user_data (window, widget);
1808
1809   gtk_widget_get_allocation (widget, &allocation);
1810
1811   /* Make the window for the tree */
1812   attributes.x = 0;
1813   attributes.y = TREE_VIEW_HEADER_HEIGHT (tree_view);
1814   attributes.width = MAX (tree_view->priv->width, allocation.width);
1815   attributes.height = allocation.height;
1816   attributes.event_mask = (GDK_EXPOSURE_MASK |
1817                            GDK_SCROLL_MASK |
1818                            GDK_POINTER_MOTION_MASK |
1819                            GDK_ENTER_NOTIFY_MASK |
1820                            GDK_LEAVE_NOTIFY_MASK |
1821                            GDK_BUTTON_PRESS_MASK |
1822                            GDK_BUTTON_RELEASE_MASK |
1823                            gtk_widget_get_events (widget));
1824
1825   tree_view->priv->bin_window = gdk_window_new (window,
1826                                                 &attributes, attributes_mask);
1827   gdk_window_set_user_data (tree_view->priv->bin_window, widget);
1828
1829   gtk_widget_get_allocation (widget, &allocation);
1830
1831   /* Make the column header window */
1832   attributes.x = 0;
1833   attributes.y = 0;
1834   attributes.width = MAX (tree_view->priv->width, allocation.width);
1835   attributes.height = tree_view->priv->header_height;
1836   attributes.event_mask = (GDK_EXPOSURE_MASK |
1837                            GDK_SCROLL_MASK |
1838                            GDK_ENTER_NOTIFY_MASK |
1839                            GDK_LEAVE_NOTIFY_MASK |
1840                            GDK_BUTTON_PRESS_MASK |
1841                            GDK_BUTTON_RELEASE_MASK |
1842                            GDK_KEY_PRESS_MASK |
1843                            GDK_KEY_RELEASE_MASK |
1844                            gtk_widget_get_events (widget));
1845
1846   tree_view->priv->header_window = gdk_window_new (window,
1847                                                    &attributes, attributes_mask);
1848   gdk_window_set_user_data (tree_view->priv->header_window, widget);
1849
1850   /* Add them all up. */
1851   gtk_widget_style_attach (widget);
1852   gdk_window_set_back_pixmap (window, NULL, FALSE);
1853   style = gtk_widget_get_style (widget);
1854   gdk_window_set_background (tree_view->priv->bin_window,
1855                              &style->base[gtk_widget_get_state (widget)]);
1856   gtk_style_set_background (style, tree_view->priv->header_window, GTK_STATE_NORMAL);
1857
1858   tmp_list = tree_view->priv->children;
1859   while (tmp_list)
1860     {
1861       GtkTreeViewChild *child = tmp_list->data;
1862       tmp_list = tmp_list->next;
1863
1864       gtk_widget_set_parent_window (child->widget, tree_view->priv->bin_window);
1865     }
1866
1867   for (tmp_list = tree_view->priv->columns; tmp_list; tmp_list = tmp_list->next)
1868     _gtk_tree_view_column_realize_button (GTK_TREE_VIEW_COLUMN (tmp_list->data));
1869
1870   /* Need to call those here, since they create GCs */
1871   gtk_tree_view_set_grid_lines (tree_view, tree_view->priv->grid_lines);
1872   gtk_tree_view_set_enable_tree_lines (tree_view, tree_view->priv->tree_lines_enabled);
1873
1874   install_presize_handler (tree_view);
1875 }
1876
1877 static void
1878 gtk_tree_view_unrealize (GtkWidget *widget)
1879 {
1880   GtkTreeView *tree_view = GTK_TREE_VIEW (widget);
1881   GtkTreeViewPrivate *priv = tree_view->priv;
1882   GList *list;
1883
1884   if (priv->scroll_timeout != 0)
1885     {
1886       g_source_remove (priv->scroll_timeout);
1887       priv->scroll_timeout = 0;
1888     }
1889
1890   if (priv->auto_expand_timeout != 0)
1891     {
1892       g_source_remove (priv->auto_expand_timeout);
1893       priv->auto_expand_timeout = 0;
1894     }
1895
1896   if (priv->open_dest_timeout != 0)
1897     {
1898       g_source_remove (priv->open_dest_timeout);
1899       priv->open_dest_timeout = 0;
1900     }
1901
1902   remove_expand_collapse_timeout (tree_view);
1903
1904   if (priv->presize_handler_timer != 0)
1905     {
1906       g_source_remove (priv->presize_handler_timer);
1907       priv->presize_handler_timer = 0;
1908     }
1909
1910   if (priv->validate_rows_timer != 0)
1911     {
1912       g_source_remove (priv->validate_rows_timer);
1913       priv->validate_rows_timer = 0;
1914     }
1915
1916   if (priv->scroll_sync_timer != 0)
1917     {
1918       g_source_remove (priv->scroll_sync_timer);
1919       priv->scroll_sync_timer = 0;
1920     }
1921
1922   if (priv->typeselect_flush_timeout)
1923     {
1924       g_source_remove (priv->typeselect_flush_timeout);
1925       priv->typeselect_flush_timeout = 0;
1926     }
1927
1928   for (list = priv->columns; list; list = list->next)
1929     _gtk_tree_view_column_unrealize_button (GTK_TREE_VIEW_COLUMN (list->data));
1930
1931   gdk_window_set_user_data (priv->bin_window, NULL);
1932   gdk_window_destroy (priv->bin_window);
1933   priv->bin_window = NULL;
1934
1935   gdk_window_set_user_data (priv->header_window, NULL);
1936   gdk_window_destroy (priv->header_window);
1937   priv->header_window = NULL;
1938
1939   if (priv->drag_window)
1940     {
1941       gdk_window_set_user_data (priv->drag_window, NULL);
1942       gdk_window_destroy (priv->drag_window);
1943       priv->drag_window = NULL;
1944     }
1945
1946   if (priv->drag_highlight_window)
1947     {
1948       gdk_window_set_user_data (priv->drag_highlight_window, NULL);
1949       gdk_window_destroy (priv->drag_highlight_window);
1950       priv->drag_highlight_window = NULL;
1951     }
1952
1953   GTK_WIDGET_CLASS (gtk_tree_view_parent_class)->unrealize (widget);
1954 }
1955
1956 /* GtkWidget::size_request helper */
1957 static void
1958 gtk_tree_view_size_request_columns (GtkTreeView *tree_view)
1959 {
1960   GList *list;
1961
1962   tree_view->priv->header_height = 0;
1963
1964   if (tree_view->priv->model)
1965     {
1966       for (list = tree_view->priv->columns; list; list = list->next)
1967         {
1968           GtkRequisition requisition;
1969           GtkTreeViewColumn *column = list->data;
1970
1971           if (column->button == NULL)
1972             continue;
1973
1974           column = list->data;
1975
1976           gtk_widget_size_request (column->button, &requisition);
1977           column->button_request = requisition.width;
1978           tree_view->priv->header_height = MAX (tree_view->priv->header_height, requisition.height);
1979         }
1980     }
1981 }
1982
1983
1984 /* Called only by ::size_request */
1985 static void
1986 gtk_tree_view_update_size (GtkTreeView *tree_view)
1987 {
1988   GList *list;
1989   GtkTreeViewColumn *column;
1990   gint i;
1991
1992   if (tree_view->priv->model == NULL)
1993     {
1994       tree_view->priv->width = 0;
1995       tree_view->priv->prev_width = 0;
1996       tree_view->priv->height = 0;
1997       return;
1998     }
1999
2000   tree_view->priv->prev_width = tree_view->priv->width;
2001   tree_view->priv->width = 0;
2002
2003   /* keep this in sync with size_allocate below */
2004   for (list = tree_view->priv->columns, i = 0; list; list = list->next, i++)
2005     {
2006       gint real_requested_width = 0;
2007       column = list->data;
2008       if (!column->visible)
2009         continue;
2010
2011       if (column->use_resized_width)
2012         {
2013           real_requested_width = column->resized_width;
2014         }
2015       else if (column->column_type == GTK_TREE_VIEW_COLUMN_FIXED)
2016         {
2017           real_requested_width = column->fixed_width;
2018         }
2019       else if (GTK_TREE_VIEW_FLAG_SET (tree_view, GTK_TREE_VIEW_HEADERS_VISIBLE))
2020         {
2021           real_requested_width = MAX (column->requested_width, column->button_request);
2022         }
2023       else
2024         {
2025           real_requested_width = column->requested_width;
2026         }
2027
2028       if (column->min_width != -1)
2029         real_requested_width = MAX (real_requested_width, column->min_width);
2030       if (column->max_width != -1)
2031         real_requested_width = MIN (real_requested_width, column->max_width);
2032
2033       tree_view->priv->width += real_requested_width;
2034     }
2035
2036   if (tree_view->priv->tree == NULL)
2037     tree_view->priv->height = 0;
2038   else
2039     tree_view->priv->height = tree_view->priv->tree->root->offset;
2040 }
2041
2042 static void
2043 gtk_tree_view_size_request (GtkWidget      *widget,
2044                             GtkRequisition *requisition)
2045 {
2046   GtkTreeView *tree_view = GTK_TREE_VIEW (widget);
2047   GList *tmp_list;
2048
2049   /* we validate some rows initially just to make sure we have some size.
2050    * In practice, with a lot of static lists, this should get a good width.
2051    */
2052   do_validate_rows (tree_view, FALSE);
2053   gtk_tree_view_size_request_columns (tree_view);
2054   gtk_tree_view_update_size (GTK_TREE_VIEW (widget));
2055
2056   requisition->width = tree_view->priv->width;
2057   requisition->height = tree_view->priv->height + TREE_VIEW_HEADER_HEIGHT (tree_view);
2058
2059   tmp_list = tree_view->priv->children;
2060
2061   while (tmp_list)
2062     {
2063       GtkTreeViewChild *child = tmp_list->data;
2064       GtkRequisition child_requisition;
2065
2066       tmp_list = tmp_list->next;
2067
2068       if (gtk_widget_get_visible (child->widget))
2069         gtk_widget_size_request (child->widget, &child_requisition);
2070     }
2071 }
2072
2073 static int
2074 gtk_tree_view_calculate_width_before_expander (GtkTreeView *tree_view)
2075 {
2076   int width = 0;
2077   GList *list;
2078   gboolean rtl;
2079
2080   rtl = (gtk_widget_get_direction (GTK_WIDGET (tree_view)) == GTK_TEXT_DIR_RTL);
2081   for (list = (rtl ? g_list_last (tree_view->priv->columns) : g_list_first (tree_view->priv->columns));
2082        list->data != tree_view->priv->expander_column;
2083        list = (rtl ? list->prev : list->next))
2084     {
2085       GtkTreeViewColumn *column = list->data;
2086
2087       width += column->width;
2088     }
2089
2090   return width;
2091 }
2092
2093 static void
2094 invalidate_column (GtkTreeView       *tree_view,
2095                    GtkTreeViewColumn *column)
2096 {
2097   gint column_offset = 0;
2098   GList *list;
2099   GtkWidget *widget = GTK_WIDGET (tree_view);
2100   gboolean rtl;
2101
2102   if (!gtk_widget_get_realized (widget))
2103     return;
2104
2105   rtl = (gtk_widget_get_direction (GTK_WIDGET (tree_view)) == GTK_TEXT_DIR_RTL);
2106   for (list = (rtl ? g_list_last (tree_view->priv->columns) : g_list_first (tree_view->priv->columns));
2107        list;
2108        list = (rtl ? list->prev : list->next))
2109     {
2110       GtkTreeViewColumn *tmpcolumn = list->data;
2111       if (tmpcolumn == column)
2112         {
2113           GtkAllocation allocation;
2114           GdkRectangle invalid_rect;
2115
2116           gtk_widget_get_allocation (widget, &allocation);
2117           invalid_rect.x = column_offset;
2118           invalid_rect.y = 0;
2119           invalid_rect.width = column->width;
2120           invalid_rect.height = allocation.height;
2121
2122           gdk_window_invalidate_rect (gtk_widget_get_window (widget), &invalid_rect, TRUE);
2123           break;
2124         }
2125
2126       column_offset += tmpcolumn->width;
2127     }
2128 }
2129
2130 static void
2131 invalidate_last_column (GtkTreeView *tree_view)
2132 {
2133   GList *last_column;
2134   gboolean rtl;
2135
2136   rtl = (gtk_widget_get_direction (GTK_WIDGET (tree_view)) == GTK_TEXT_DIR_RTL);
2137
2138   for (last_column = (rtl ? g_list_first (tree_view->priv->columns) : g_list_last (tree_view->priv->columns));
2139        last_column;
2140        last_column = (rtl ? last_column->next : last_column->prev))
2141     {
2142       if (GTK_TREE_VIEW_COLUMN (last_column->data)->visible)
2143         {
2144           invalidate_column (tree_view, last_column->data);
2145           return;
2146         }
2147     }
2148 }
2149
2150 static gint
2151 gtk_tree_view_get_real_requested_width_from_column (GtkTreeView       *tree_view,
2152                                                     GtkTreeViewColumn *column)
2153 {
2154   gint real_requested_width;
2155
2156   if (column->use_resized_width)
2157     {
2158       real_requested_width = column->resized_width;
2159     }
2160   else if (column->column_type == GTK_TREE_VIEW_COLUMN_FIXED)
2161     {
2162       real_requested_width = column->fixed_width;
2163     }
2164   else if (GTK_TREE_VIEW_FLAG_SET (tree_view, GTK_TREE_VIEW_HEADERS_VISIBLE))
2165     {
2166       real_requested_width = MAX (column->requested_width, column->button_request);
2167     }
2168   else
2169     {
2170       real_requested_width = column->requested_width;
2171       if (real_requested_width < 0)
2172         real_requested_width = 0;
2173     }
2174
2175   if (column->min_width != -1)
2176     real_requested_width = MAX (real_requested_width, column->min_width);
2177   if (column->max_width != -1)
2178     real_requested_width = MIN (real_requested_width, column->max_width);
2179
2180   return real_requested_width;
2181 }
2182
2183 /* GtkWidget::size_allocate helper */
2184 static void
2185 gtk_tree_view_size_allocate_columns (GtkWidget *widget,
2186                                      gboolean  *width_changed)
2187 {
2188   GtkTreeView *tree_view;
2189   GList *list, *first_column, *last_column;
2190   GtkTreeViewColumn *column;
2191   GtkAllocation allocation;
2192   GtkAllocation widget_allocation;
2193   gint width = 0;
2194   gint extra, extra_per_column, extra_for_last;
2195   gint full_requested_width = 0;
2196   gint number_of_expand_columns = 0;
2197   gboolean column_changed = FALSE;
2198   gboolean rtl;
2199   gboolean update_expand;
2200
2201   tree_view = GTK_TREE_VIEW (widget);
2202
2203   for (last_column = g_list_last (tree_view->priv->columns);
2204        last_column && !(GTK_TREE_VIEW_COLUMN (last_column->data)->visible);
2205        last_column = last_column->prev)
2206     ;
2207   if (last_column == NULL)
2208     return;
2209
2210   for (first_column = g_list_first (tree_view->priv->columns);
2211        first_column && !(GTK_TREE_VIEW_COLUMN (first_column->data)->visible);
2212        first_column = first_column->next)
2213     ;
2214
2215   allocation.y = 0;
2216   allocation.height = tree_view->priv->header_height;
2217
2218   rtl = (gtk_widget_get_direction (widget) == GTK_TEXT_DIR_RTL);
2219
2220   /* find out how many extra space and expandable columns we have */
2221   for (list = tree_view->priv->columns; list != last_column->next; list = list->next)
2222     {
2223       column = (GtkTreeViewColumn *)list->data;
2224
2225       if (!column->visible)
2226         continue;
2227
2228       full_requested_width += gtk_tree_view_get_real_requested_width_from_column (tree_view, column);
2229
2230       if (column->expand)
2231         number_of_expand_columns++;
2232     }
2233
2234   /* Only update the expand value if the width of the widget has changed,
2235    * or the number of expand columns has changed, or if there are no expand
2236    * columns, or if we didn't have an size-allocation yet after the
2237    * last validated node.
2238    */
2239   update_expand = (width_changed && *width_changed == TRUE)
2240       || number_of_expand_columns != tree_view->priv->last_number_of_expand_columns
2241       || number_of_expand_columns == 0
2242       || tree_view->priv->post_validation_flag == TRUE;
2243
2244   tree_view->priv->post_validation_flag = FALSE;
2245
2246   gtk_widget_get_allocation (widget, &widget_allocation);
2247   if (!update_expand)
2248     {
2249       extra = tree_view->priv->last_extra_space;
2250       extra_for_last = MAX (widget_allocation.width - full_requested_width - extra, 0);
2251     }
2252   else
2253     {
2254       extra = MAX (widget_allocation.width - full_requested_width, 0);
2255       extra_for_last = 0;
2256
2257       tree_view->priv->last_extra_space = extra;
2258     }
2259
2260   if (number_of_expand_columns > 0)
2261     extra_per_column = extra/number_of_expand_columns;
2262   else
2263     extra_per_column = 0;
2264
2265   if (update_expand)
2266     {
2267       tree_view->priv->last_extra_space_per_column = extra_per_column;
2268       tree_view->priv->last_number_of_expand_columns = number_of_expand_columns;
2269     }
2270
2271   for (list = (rtl ? last_column : first_column);
2272        list != (rtl ? first_column->prev : last_column->next);
2273        list = (rtl ? list->prev : list->next))
2274     {
2275       gint real_requested_width = 0;
2276       gint old_width;
2277
2278       column = list->data;
2279       old_width = column->width;
2280
2281       if (!column->visible)
2282         continue;
2283
2284       /* We need to handle the dragged button specially.
2285        */
2286       if (column == tree_view->priv->drag_column)
2287         {
2288           GtkAllocation drag_allocation;
2289           gdk_drawable_get_size (tree_view->priv->drag_window,
2290                                  &(drag_allocation.width),
2291                                  &(drag_allocation.height));
2292           drag_allocation.x = 0;
2293           drag_allocation.y = 0;
2294           gtk_widget_size_allocate (tree_view->priv->drag_column->button,
2295                                     &drag_allocation);
2296           width += drag_allocation.width;
2297           continue;
2298         }
2299
2300       real_requested_width = gtk_tree_view_get_real_requested_width_from_column (tree_view, column);
2301
2302       allocation.x = width;
2303       column->width = real_requested_width;
2304
2305       if (column->expand)
2306         {
2307           if (number_of_expand_columns == 1)
2308             {
2309               /* We add the remander to the last column as
2310                * */
2311               column->width += extra;
2312             }
2313           else
2314             {
2315               column->width += extra_per_column;
2316               extra -= extra_per_column;
2317               number_of_expand_columns --;
2318             }
2319         }
2320       else if (number_of_expand_columns == 0 &&
2321                list == last_column)
2322         {
2323           column->width += extra;
2324         }
2325
2326       /* In addition to expand, the last column can get even more
2327        * extra space so all available space is filled up.
2328        */
2329       if (extra_for_last > 0 && list == last_column)
2330         column->width += extra_for_last;
2331
2332       g_object_notify (G_OBJECT (column), "width");
2333
2334       allocation.width = column->width;
2335       width += column->width;
2336
2337       if (column->width > old_width)
2338         column_changed = TRUE;
2339
2340       gtk_widget_size_allocate (column->button, &allocation);
2341
2342       if (column->window)
2343         gdk_window_move_resize (column->window,
2344                                 allocation.x + (rtl ? 0 : allocation.width) - TREE_VIEW_DRAG_WIDTH/2,
2345                                 allocation.y,
2346                                 TREE_VIEW_DRAG_WIDTH, allocation.height);
2347     }
2348
2349   /* We change the width here.  The user might have been resizing columns,
2350    * so the total width of the tree view changes.
2351    */
2352   tree_view->priv->width = width;
2353   if (width_changed)
2354     *width_changed = TRUE;
2355
2356   if (column_changed)
2357     gtk_widget_queue_draw (GTK_WIDGET (tree_view));
2358 }
2359
2360
2361 static void
2362 gtk_tree_view_size_allocate (GtkWidget     *widget,
2363                              GtkAllocation *allocation)
2364 {
2365   GtkAllocation widget_allocation;
2366   GtkTreeView *tree_view = GTK_TREE_VIEW (widget);
2367   GList *tmp_list;
2368   gboolean width_changed = FALSE;
2369   gint old_width;
2370
2371   gtk_widget_get_allocation (widget, &widget_allocation);
2372   old_width = widget_allocation.width;
2373   if (allocation->width != widget_allocation.width)
2374     width_changed = TRUE;
2375
2376   gtk_widget_set_allocation (widget, allocation);
2377
2378   tmp_list = tree_view->priv->children;
2379
2380   while (tmp_list)
2381     {
2382       GtkAllocation allocation;
2383
2384       GtkTreeViewChild *child = tmp_list->data;
2385       tmp_list = tmp_list->next;
2386
2387       /* totally ignore our child's requisition */
2388       allocation.x = child->x;
2389       allocation.y = child->y;
2390       allocation.width = child->width;
2391       allocation.height = child->height;
2392       gtk_widget_size_allocate (child->widget, &allocation);
2393     }
2394
2395   /* We size-allocate the columns first because the width of the
2396    * tree view (used in updating the adjustments below) might change.
2397    */
2398   gtk_tree_view_size_allocate_columns (widget, &width_changed);
2399
2400   tree_view->priv->hadjustment->page_size = allocation->width;
2401   tree_view->priv->hadjustment->page_increment = allocation->width * 0.9;
2402   tree_view->priv->hadjustment->step_increment = allocation->width * 0.1;
2403   tree_view->priv->hadjustment->lower = 0;
2404   tree_view->priv->hadjustment->upper = MAX (tree_view->priv->hadjustment->page_size, tree_view->priv->width);
2405
2406   if (gtk_widget_get_direction(widget) == GTK_TEXT_DIR_RTL)
2407     {
2408       if (allocation->width < tree_view->priv->width)
2409         {
2410           if (tree_view->priv->init_hadjust_value)
2411             {
2412               tree_view->priv->hadjustment->value = MAX (tree_view->priv->width - allocation->width, 0);
2413               tree_view->priv->init_hadjust_value = FALSE;
2414             }
2415           else if (allocation->width != old_width)
2416             {
2417               tree_view->priv->hadjustment->value = CLAMP (tree_view->priv->hadjustment->value - allocation->width + old_width, 0, tree_view->priv->width - allocation->width);
2418             }
2419           else
2420             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);
2421         }
2422       else
2423         {
2424           tree_view->priv->hadjustment->value = 0;
2425           tree_view->priv->init_hadjust_value = TRUE;
2426         }
2427     }
2428   else
2429     if (tree_view->priv->hadjustment->value + allocation->width > tree_view->priv->width)
2430       tree_view->priv->hadjustment->value = MAX (tree_view->priv->width - allocation->width, 0);
2431
2432   gtk_adjustment_changed (tree_view->priv->hadjustment);
2433
2434   tree_view->priv->vadjustment->page_size = allocation->height - TREE_VIEW_HEADER_HEIGHT (tree_view);
2435   tree_view->priv->vadjustment->step_increment = tree_view->priv->vadjustment->page_size * 0.1;
2436   tree_view->priv->vadjustment->page_increment = tree_view->priv->vadjustment->page_size * 0.9;
2437   tree_view->priv->vadjustment->lower = 0;
2438   tree_view->priv->vadjustment->upper = MAX (tree_view->priv->vadjustment->page_size, tree_view->priv->height);
2439
2440   gtk_adjustment_changed (tree_view->priv->vadjustment);
2441
2442   /* now the adjustments and window sizes are in sync, we can sync toprow/dy again */
2443   if (tree_view->priv->height <= tree_view->priv->vadjustment->page_size)
2444     gtk_adjustment_set_value (GTK_ADJUSTMENT (tree_view->priv->vadjustment), 0);
2445   else if (tree_view->priv->vadjustment->value + tree_view->priv->vadjustment->page_size > tree_view->priv->height)
2446     gtk_adjustment_set_value (GTK_ADJUSTMENT (tree_view->priv->vadjustment),
2447                               tree_view->priv->height - tree_view->priv->vadjustment->page_size);
2448   else if (gtk_tree_row_reference_valid (tree_view->priv->top_row))
2449     gtk_tree_view_top_row_to_dy (tree_view);
2450   else
2451     gtk_tree_view_dy_to_top_row (tree_view);
2452
2453   if (gtk_widget_get_realized (widget))
2454     {
2455       gdk_window_move_resize (gtk_widget_get_window (widget),
2456                               allocation->x, allocation->y,
2457                               allocation->width, allocation->height);
2458       gdk_window_move_resize (tree_view->priv->header_window,
2459                               - (gint) tree_view->priv->hadjustment->value,
2460                               0,
2461                               MAX (tree_view->priv->width, allocation->width),
2462                               tree_view->priv->header_height);
2463       gdk_window_move_resize (tree_view->priv->bin_window,
2464                               - (gint) tree_view->priv->hadjustment->value,
2465                               TREE_VIEW_HEADER_HEIGHT (tree_view),
2466                               MAX (tree_view->priv->width, allocation->width),
2467                               allocation->height - TREE_VIEW_HEADER_HEIGHT (tree_view));
2468     }
2469
2470   if (tree_view->priv->tree == NULL)
2471     invalidate_empty_focus (tree_view);
2472
2473   if (gtk_widget_get_realized (widget))
2474     {
2475       gboolean has_expand_column = FALSE;
2476       for (tmp_list = tree_view->priv->columns; tmp_list; tmp_list = tmp_list->next)
2477         {
2478           if (gtk_tree_view_column_get_expand (GTK_TREE_VIEW_COLUMN (tmp_list->data)))
2479             {
2480               has_expand_column = TRUE;
2481               break;
2482             }
2483         }
2484
2485       if (width_changed && tree_view->priv->expander_column)
2486         {
2487           /* Might seem awkward, but is the best heuristic I could come up
2488            * with.  Only if the width of the columns before the expander
2489            * changes, we will update the prelight status.  It is this
2490            * width that makes the expander move vertically.  Always updating
2491            * prelight status causes trouble with hover selections.
2492            */
2493           gint width_before_expander;
2494
2495           width_before_expander = gtk_tree_view_calculate_width_before_expander (tree_view);
2496
2497           if (tree_view->priv->prev_width_before_expander
2498               != width_before_expander)
2499               update_prelight (tree_view,
2500                                tree_view->priv->event_last_x,
2501                                tree_view->priv->event_last_y);
2502
2503           tree_view->priv->prev_width_before_expander = width_before_expander;
2504         }
2505
2506       /* This little hack only works if we have an LTR locale, and no column has the  */
2507       if (width_changed)
2508         {
2509           if (gtk_widget_get_direction (GTK_WIDGET (tree_view)) == GTK_TEXT_DIR_LTR &&
2510               ! has_expand_column)
2511             invalidate_last_column (tree_view);
2512           else
2513             gtk_widget_queue_draw (widget);
2514         }
2515     }
2516 }
2517
2518 /* Grabs the focus and unsets the GTK_TREE_VIEW_DRAW_KEYFOCUS flag */
2519 static void
2520 grab_focus_and_unset_draw_keyfocus (GtkTreeView *tree_view)
2521 {
2522   GtkWidget *widget = GTK_WIDGET (tree_view);
2523
2524   if (gtk_widget_get_can_focus (widget) && !gtk_widget_has_focus (widget))
2525     gtk_widget_grab_focus (widget);
2526   GTK_TREE_VIEW_UNSET_FLAG (tree_view, GTK_TREE_VIEW_DRAW_KEYFOCUS);
2527 }
2528
2529 static inline gboolean
2530 row_is_separator (GtkTreeView *tree_view,
2531                   GtkTreeIter *iter,
2532                   GtkTreePath *path)
2533 {
2534   gboolean is_separator = FALSE;
2535
2536   if (tree_view->priv->row_separator_func)
2537     {
2538       GtkTreeIter tmpiter;
2539
2540       if (iter)
2541         tmpiter = *iter;
2542       else
2543         gtk_tree_model_get_iter (tree_view->priv->model, &tmpiter, path);
2544
2545       is_separator = tree_view->priv->row_separator_func (tree_view->priv->model,
2546                                                           &tmpiter,
2547                                                           tree_view->priv->row_separator_data);
2548     }
2549
2550   return is_separator;
2551 }
2552
2553 static gboolean
2554 gtk_tree_view_button_press (GtkWidget      *widget,
2555                             GdkEventButton *event)
2556 {
2557   GtkTreeView *tree_view = GTK_TREE_VIEW (widget);
2558   GList *list;
2559   GtkTreeViewColumn *column = NULL;
2560   gint i;
2561   GdkRectangle background_area;
2562   GdkRectangle cell_area;
2563   gint vertical_separator;
2564   gint horizontal_separator;
2565   gboolean path_is_selectable;
2566   gboolean rtl;
2567
2568   rtl = (gtk_widget_get_direction (widget) == GTK_TEXT_DIR_RTL);
2569   gtk_tree_view_stop_editing (tree_view, FALSE);
2570   gtk_widget_style_get (widget,
2571                         "vertical-separator", &vertical_separator,
2572                         "horizontal-separator", &horizontal_separator,
2573                         NULL);
2574
2575
2576   /* Because grab_focus can cause reentrancy, we delay grab_focus until after
2577    * we're done handling the button press.
2578    */
2579
2580   if (event->window == tree_view->priv->bin_window)
2581     {
2582       GtkRBNode *node;
2583       GtkRBTree *tree;
2584       GtkTreePath *path;
2585       gchar *path_string;
2586       gint depth;
2587       gint new_y;
2588       gint y_offset;
2589       gint dval;
2590       gint pre_val, aft_val;
2591       GtkTreeViewColumn *column = NULL;
2592       GtkCellRenderer *focus_cell = NULL;
2593       gint column_handled_click = FALSE;
2594       gboolean row_double_click = FALSE;
2595       gboolean rtl;
2596       gboolean node_selected;
2597
2598       /* Empty tree? */
2599       if (tree_view->priv->tree == NULL)
2600         {
2601           grab_focus_and_unset_draw_keyfocus (tree_view);
2602           return TRUE;
2603         }
2604
2605       /* are we in an arrow? */
2606       if (tree_view->priv->prelight_node &&
2607           GTK_TREE_VIEW_FLAG_SET (tree_view, GTK_TREE_VIEW_ARROW_PRELIT) &&
2608           TREE_VIEW_DRAW_EXPANDERS (tree_view))
2609         {
2610           if (event->button == 1)
2611             {
2612               gtk_grab_add (widget);
2613               tree_view->priv->button_pressed_node = tree_view->priv->prelight_node;
2614               tree_view->priv->button_pressed_tree = tree_view->priv->prelight_tree;
2615               gtk_tree_view_draw_arrow (GTK_TREE_VIEW (widget),
2616                                         tree_view->priv->prelight_tree,
2617                                         tree_view->priv->prelight_node,
2618                                         event->x,
2619                                         event->y);
2620             }
2621
2622           grab_focus_and_unset_draw_keyfocus (tree_view);
2623           return TRUE;
2624         }
2625
2626       /* find the node that was clicked */
2627       new_y = TREE_WINDOW_Y_TO_RBTREE_Y(tree_view, event->y);
2628       if (new_y < 0)
2629         new_y = 0;
2630       y_offset = -_gtk_rbtree_find_offset (tree_view->priv->tree, new_y, &tree, &node);
2631
2632       if (node == NULL)
2633         {
2634           /* We clicked in dead space */
2635           grab_focus_and_unset_draw_keyfocus (tree_view);
2636           return TRUE;
2637         }
2638
2639       /* Get the path and the node */
2640       path = _gtk_tree_view_find_path (tree_view, tree, node);
2641       path_is_selectable = !row_is_separator (tree_view, NULL, path);
2642
2643       if (!path_is_selectable)
2644         {
2645           gtk_tree_path_free (path);
2646           grab_focus_and_unset_draw_keyfocus (tree_view);
2647           return TRUE;
2648         }
2649
2650       depth = gtk_tree_path_get_depth (path);
2651       background_area.y = y_offset + event->y;
2652       background_area.height = ROW_HEIGHT (tree_view, GTK_RBNODE_GET_HEIGHT (node));
2653       background_area.x = 0;
2654
2655
2656       /* Let the column have a chance at selecting it. */
2657       rtl = (gtk_widget_get_direction (GTK_WIDGET (tree_view)) == GTK_TEXT_DIR_RTL);
2658       for (list = (rtl ? g_list_last (tree_view->priv->columns) : g_list_first (tree_view->priv->columns));
2659            list; list = (rtl ? list->prev : list->next))
2660         {
2661           GtkTreeViewColumn *candidate = list->data;
2662
2663           if (!candidate->visible)
2664             continue;
2665
2666           background_area.width = candidate->width;
2667           if ((background_area.x > (gint) event->x) ||
2668               (background_area.x + background_area.width <= (gint) event->x))
2669             {
2670               background_area.x += background_area.width;
2671               continue;
2672             }
2673
2674           /* we found the focus column */
2675           column = candidate;
2676           cell_area = background_area;
2677           cell_area.width -= horizontal_separator;
2678           cell_area.height -= vertical_separator;
2679           cell_area.x += horizontal_separator/2;
2680           cell_area.y += vertical_separator/2;
2681           if (gtk_tree_view_is_expander_column (tree_view, column))
2682             {
2683               if (!rtl)
2684                 cell_area.x += (depth - 1) * tree_view->priv->level_indentation;
2685               cell_area.width -= (depth - 1) * tree_view->priv->level_indentation;
2686
2687               if (TREE_VIEW_DRAW_EXPANDERS (tree_view))
2688                 {
2689                   if (!rtl)
2690                     cell_area.x += depth * tree_view->priv->expander_size;
2691                   cell_area.width -= depth * tree_view->priv->expander_size;
2692                 }
2693             }
2694           break;
2695         }
2696
2697       if (column == NULL)
2698         {
2699           gtk_tree_path_free (path);
2700           grab_focus_and_unset_draw_keyfocus (tree_view);
2701           return FALSE;
2702         }
2703
2704       tree_view->priv->focus_column = column;
2705
2706       /* decide if we edit */
2707       if (event->type == GDK_BUTTON_PRESS && event->button == 1 &&
2708           !(event->state & gtk_accelerator_get_default_mod_mask ()))
2709         {
2710           GtkTreePath *anchor;
2711           GtkTreeIter iter;
2712
2713           gtk_tree_model_get_iter (tree_view->priv->model, &iter, path);
2714           gtk_tree_view_column_cell_set_cell_data (column,
2715                                                    tree_view->priv->model,
2716                                                    &iter,
2717                                                    GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_PARENT),
2718                                                    node->children?TRUE:FALSE);
2719
2720           if (tree_view->priv->anchor)
2721             anchor = gtk_tree_row_reference_get_path (tree_view->priv->anchor);
2722           else
2723             anchor = NULL;
2724
2725           if ((anchor && !gtk_tree_path_compare (anchor, path))
2726               || !_gtk_tree_view_column_has_editable_cell (column))
2727             {
2728               GtkCellEditable *cell_editable = NULL;
2729
2730               /* FIXME: get the right flags */
2731               guint flags = 0;
2732
2733               path_string = gtk_tree_path_to_string (path);
2734
2735               if (_gtk_tree_view_column_cell_event (column,
2736                                                     &cell_editable,
2737                                                     (GdkEvent *)event,
2738                                                     path_string,
2739                                                     &background_area,
2740                                                     &cell_area, flags))
2741                 {
2742                   if (cell_editable != NULL)
2743                     {
2744                       gint left, right;
2745                       GdkRectangle area;
2746
2747                       area = cell_area;
2748                       _gtk_tree_view_column_get_neighbor_sizes (column, _gtk_tree_view_column_get_edited_cell (column), &left, &right);
2749
2750                       area.x += left;
2751                       area.width -= right + left;
2752
2753                       gtk_tree_view_real_start_editing (tree_view,
2754                                                         column,
2755                                                         path,
2756                                                         cell_editable,
2757                                                         &area,
2758                                                         (GdkEvent *)event,
2759                                                         flags);
2760                       g_free (path_string);
2761                       gtk_tree_path_free (path);
2762                       gtk_tree_path_free (anchor);
2763                       return TRUE;
2764                     }
2765                   column_handled_click = TRUE;
2766                 }
2767               g_free (path_string);
2768             }
2769           if (anchor)
2770             gtk_tree_path_free (anchor);
2771         }
2772
2773       /* select */
2774       node_selected = GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_SELECTED);
2775       pre_val = tree_view->priv->vadjustment->value;
2776
2777       /* we only handle selection modifications on the first button press
2778        */
2779       if (event->type == GDK_BUTTON_PRESS)
2780         {
2781           if ((event->state & GDK_CONTROL_MASK) == GDK_CONTROL_MASK)
2782             tree_view->priv->ctrl_pressed = TRUE;
2783           if ((event->state & GDK_SHIFT_MASK) == GDK_SHIFT_MASK)
2784             tree_view->priv->shift_pressed = TRUE;
2785
2786           focus_cell = _gtk_tree_view_column_get_cell_at_pos (column, event->x - background_area.x);
2787           if (focus_cell)
2788             gtk_tree_view_column_focus_cell (column, focus_cell);
2789
2790           if (event->state & GDK_CONTROL_MASK)
2791             {
2792               gtk_tree_view_real_set_cursor (tree_view, path, FALSE, TRUE);
2793               gtk_tree_view_real_toggle_cursor_row (tree_view);
2794             }
2795           else if (event->state & GDK_SHIFT_MASK)
2796             {
2797               gtk_tree_view_real_set_cursor (tree_view, path, FALSE, TRUE);
2798               gtk_tree_view_real_select_cursor_row (tree_view, FALSE);
2799             }
2800           else
2801             {
2802               gtk_tree_view_real_set_cursor (tree_view, path, TRUE, TRUE);
2803             }
2804
2805           tree_view->priv->ctrl_pressed = FALSE;
2806           tree_view->priv->shift_pressed = FALSE;
2807         }
2808
2809       /* the treeview may have been scrolled because of _set_cursor,
2810        * correct here
2811        */
2812
2813       aft_val = tree_view->priv->vadjustment->value;
2814       dval = pre_val - aft_val;
2815
2816       cell_area.y += dval;
2817       background_area.y += dval;
2818
2819       /* Save press to possibly begin a drag
2820        */
2821       if (!column_handled_click &&
2822           !tree_view->priv->in_grab &&
2823           tree_view->priv->pressed_button < 0)
2824         {
2825           tree_view->priv->pressed_button = event->button;
2826           tree_view->priv->press_start_x = event->x;
2827           tree_view->priv->press_start_y = event->y;
2828
2829           if (tree_view->priv->rubber_banding_enable
2830               && !node_selected
2831               && tree_view->priv->selection->type == GTK_SELECTION_MULTIPLE)
2832             {
2833               tree_view->priv->press_start_y += tree_view->priv->dy;
2834               tree_view->priv->rubber_band_x = event->x;
2835               tree_view->priv->rubber_band_y = event->y + tree_view->priv->dy;
2836               tree_view->priv->rubber_band_status = RUBBER_BAND_MAYBE_START;
2837
2838               if ((event->state & GDK_CONTROL_MASK) == GDK_CONTROL_MASK)
2839                 tree_view->priv->rubber_band_ctrl = TRUE;
2840               if ((event->state & GDK_SHIFT_MASK) == GDK_SHIFT_MASK)
2841                 tree_view->priv->rubber_band_shift = TRUE;
2842             }
2843         }
2844
2845       /* Test if a double click happened on the same row. */
2846       if (event->button == 1 && event->type == GDK_BUTTON_PRESS)
2847         {
2848           int double_click_time, double_click_distance;
2849
2850           g_object_get (gtk_settings_get_default (),
2851                         "gtk-double-click-time", &double_click_time,
2852                         "gtk-double-click-distance", &double_click_distance,
2853                         NULL);
2854
2855           /* Same conditions as _gdk_event_button_generate */
2856           if (tree_view->priv->last_button_x != -1 &&
2857               (event->time < tree_view->priv->last_button_time + double_click_time) &&
2858               (ABS (event->x - tree_view->priv->last_button_x) <= double_click_distance) &&
2859               (ABS (event->y - tree_view->priv->last_button_y) <= double_click_distance))
2860             {
2861               /* We do no longer compare paths of this row and the
2862                * row clicked previously.  We use the double click
2863                * distance to decide whether this is a valid click,
2864                * allowing the mouse to slightly move over another row.
2865                */
2866               row_double_click = TRUE;
2867
2868               tree_view->priv->last_button_time = 0;
2869               tree_view->priv->last_button_x = -1;
2870               tree_view->priv->last_button_y = -1;
2871             }
2872           else
2873             {
2874               tree_view->priv->last_button_time = event->time;
2875               tree_view->priv->last_button_x = event->x;
2876               tree_view->priv->last_button_y = event->y;
2877             }
2878         }
2879
2880       if (row_double_click)
2881         {
2882           gtk_grab_remove (widget);
2883           gtk_tree_view_row_activated (tree_view, path, column);
2884
2885           if (tree_view->priv->pressed_button == event->button)
2886             tree_view->priv->pressed_button = -1;
2887         }
2888
2889       gtk_tree_path_free (path);
2890
2891       /* If we activated the row through a double click we don't want to grab
2892        * focus back, as moving focus to another widget is pretty common.
2893        */
2894       if (!row_double_click)
2895         grab_focus_and_unset_draw_keyfocus (tree_view);
2896
2897       return TRUE;
2898     }
2899
2900   /* We didn't click in the window.  Let's check to see if we clicked on a column resize window.
2901    */
2902   for (i = 0, list = tree_view->priv->columns; list; list = list->next, i++)
2903     {
2904       column = list->data;
2905       if (event->window == column->window &&
2906           column->resizable &&
2907           column->window)
2908         {
2909           GtkAllocation button_allocation;
2910           gpointer drag_data;
2911
2912           if (event->type == GDK_2BUTTON_PRESS &&
2913               gtk_tree_view_column_get_sizing (column) != GTK_TREE_VIEW_COLUMN_AUTOSIZE)
2914             {
2915               column->use_resized_width = FALSE;
2916               _gtk_tree_view_column_autosize (tree_view, column);
2917               return TRUE;
2918             }
2919
2920           if (gdk_pointer_grab (column->window, FALSE,
2921                                 GDK_POINTER_MOTION_HINT_MASK |
2922                                 GDK_BUTTON1_MOTION_MASK |
2923                                 GDK_BUTTON_RELEASE_MASK,
2924                                 NULL, NULL, event->time))
2925             return FALSE;
2926
2927           gtk_grab_add (widget);
2928           GTK_TREE_VIEW_SET_FLAG (tree_view, GTK_TREE_VIEW_IN_COLUMN_RESIZE);
2929           column->resized_width = column->width - tree_view->priv->last_extra_space_per_column;
2930
2931           /* block attached dnd signal handler */
2932           drag_data = g_object_get_data (G_OBJECT (widget), "gtk-site-data");
2933           if (drag_data)
2934             g_signal_handlers_block_matched (widget,
2935                                              G_SIGNAL_MATCH_DATA,
2936                                              0, 0, NULL, NULL,
2937                                              drag_data);
2938
2939           gtk_widget_get_allocation (column->button, &button_allocation);
2940           tree_view->priv->drag_pos = i;
2941           tree_view->priv->x_drag = button_allocation.x + (rtl ? 0 : button_allocation.width);
2942
2943           if (!gtk_widget_has_focus (widget))
2944             gtk_widget_grab_focus (widget);
2945
2946           return TRUE;
2947         }
2948     }
2949   return FALSE;
2950 }
2951
2952 /* GtkWidget::button_release_event helper */
2953 static gboolean
2954 gtk_tree_view_button_release_drag_column (GtkWidget      *widget,
2955                                           GdkEventButton *event)
2956 {
2957   GtkTreeView *tree_view;
2958   GList *l;
2959   gboolean rtl;
2960
2961   tree_view = GTK_TREE_VIEW (widget);
2962
2963   rtl = (gtk_widget_get_direction (widget) == GTK_TEXT_DIR_RTL);
2964   gdk_display_pointer_ungrab (gtk_widget_get_display (widget), GDK_CURRENT_TIME);
2965   gdk_display_keyboard_ungrab (gtk_widget_get_display (widget), GDK_CURRENT_TIME);
2966
2967   /* Move the button back */
2968   g_object_ref (tree_view->priv->drag_column->button);
2969   gtk_container_remove (GTK_CONTAINER (tree_view), tree_view->priv->drag_column->button);
2970   gtk_widget_set_parent_window (tree_view->priv->drag_column->button, tree_view->priv->header_window);
2971   gtk_widget_set_parent (tree_view->priv->drag_column->button, GTK_WIDGET (tree_view));
2972   g_object_unref (tree_view->priv->drag_column->button);
2973   gtk_widget_queue_resize (widget);
2974   if (tree_view->priv->drag_column->resizable)
2975     {
2976       gdk_window_raise (tree_view->priv->drag_column->window);
2977       gdk_window_show (tree_view->priv->drag_column->window);
2978     }
2979   else
2980     gdk_window_hide (tree_view->priv->drag_column->window);
2981
2982   gtk_widget_grab_focus (tree_view->priv->drag_column->button);
2983
2984   if (rtl)
2985     {
2986       if (tree_view->priv->cur_reorder &&
2987           tree_view->priv->cur_reorder->right_column != tree_view->priv->drag_column)
2988         gtk_tree_view_move_column_after (tree_view, tree_view->priv->drag_column,
2989                                          tree_view->priv->cur_reorder->right_column);
2990     }
2991   else
2992     {
2993       if (tree_view->priv->cur_reorder &&
2994           tree_view->priv->cur_reorder->left_column != tree_view->priv->drag_column)
2995         gtk_tree_view_move_column_after (tree_view, tree_view->priv->drag_column,
2996                                          tree_view->priv->cur_reorder->left_column);
2997     }
2998   tree_view->priv->drag_column = NULL;
2999   gdk_window_hide (tree_view->priv->drag_window);
3000
3001   for (l = tree_view->priv->column_drag_info; l != NULL; l = l->next)
3002     g_slice_free (GtkTreeViewColumnReorder, l->data);
3003   g_list_free (tree_view->priv->column_drag_info);
3004   tree_view->priv->column_drag_info = NULL;
3005   tree_view->priv->cur_reorder = NULL;
3006
3007   if (tree_view->priv->drag_highlight_window)
3008     gdk_window_hide (tree_view->priv->drag_highlight_window);
3009
3010   /* Reset our flags */
3011   tree_view->priv->drag_column_window_state = DRAG_COLUMN_WINDOW_STATE_UNSET;
3012   GTK_TREE_VIEW_UNSET_FLAG (tree_view, GTK_TREE_VIEW_IN_COLUMN_DRAG);
3013
3014   return TRUE;
3015 }
3016
3017 /* GtkWidget::button_release_event helper */
3018 static gboolean
3019 gtk_tree_view_button_release_column_resize (GtkWidget      *widget,
3020                                             GdkEventButton *event)
3021 {
3022   GtkTreeView *tree_view;
3023   gpointer drag_data;
3024
3025   tree_view = GTK_TREE_VIEW (widget);
3026
3027   tree_view->priv->drag_pos = -1;
3028
3029   /* unblock attached dnd signal handler */
3030   drag_data = g_object_get_data (G_OBJECT (widget), "gtk-site-data");
3031   if (drag_data)
3032     g_signal_handlers_unblock_matched (widget,
3033                                        G_SIGNAL_MATCH_DATA,
3034                                        0, 0, NULL, NULL,
3035                                        drag_data);
3036
3037   GTK_TREE_VIEW_UNSET_FLAG (tree_view, GTK_TREE_VIEW_IN_COLUMN_RESIZE);
3038   gtk_grab_remove (widget);
3039   gdk_display_pointer_ungrab (gdk_drawable_get_display (event->window),
3040                               event->time);
3041   return TRUE;
3042 }
3043
3044 static gboolean
3045 gtk_tree_view_button_release (GtkWidget      *widget,
3046                               GdkEventButton *event)
3047 {
3048   GtkTreeView *tree_view = GTK_TREE_VIEW (widget);
3049
3050   if (GTK_TREE_VIEW_FLAG_SET (tree_view, GTK_TREE_VIEW_IN_COLUMN_DRAG))
3051     return gtk_tree_view_button_release_drag_column (widget, event);
3052
3053   if (tree_view->priv->rubber_band_status)
3054     gtk_tree_view_stop_rubber_band (tree_view);
3055
3056   if (tree_view->priv->pressed_button == event->button)
3057     tree_view->priv->pressed_button = -1;
3058
3059   if (GTK_TREE_VIEW_FLAG_SET (tree_view, GTK_TREE_VIEW_IN_COLUMN_RESIZE))
3060     return gtk_tree_view_button_release_column_resize (widget, event);
3061
3062   if (tree_view->priv->button_pressed_node == NULL)
3063     return FALSE;
3064
3065   if (event->button == 1)
3066     {
3067       gtk_grab_remove (widget);
3068       if (tree_view->priv->button_pressed_node == tree_view->priv->prelight_node &&
3069           GTK_TREE_VIEW_FLAG_SET (tree_view, GTK_TREE_VIEW_ARROW_PRELIT))
3070         {
3071           GtkTreePath *path = NULL;
3072
3073           path = _gtk_tree_view_find_path (tree_view,
3074                                            tree_view->priv->button_pressed_tree,
3075                                            tree_view->priv->button_pressed_node);
3076           /* Actually activate the node */
3077           if (tree_view->priv->button_pressed_node->children == NULL)
3078             gtk_tree_view_real_expand_row (tree_view, path,
3079                                            tree_view->priv->button_pressed_tree,
3080                                            tree_view->priv->button_pressed_node,
3081                                            FALSE, TRUE);
3082           else
3083             gtk_tree_view_real_collapse_row (GTK_TREE_VIEW (widget), path,
3084                                              tree_view->priv->button_pressed_tree,
3085                                              tree_view->priv->button_pressed_node, TRUE);
3086           gtk_tree_path_free (path);
3087         }
3088
3089       tree_view->priv->button_pressed_tree = NULL;
3090       tree_view->priv->button_pressed_node = NULL;
3091     }
3092
3093   return TRUE;
3094 }
3095
3096 static gboolean
3097 gtk_tree_view_grab_broken (GtkWidget          *widget,
3098                            GdkEventGrabBroken *event)
3099 {
3100   GtkTreeView *tree_view = GTK_TREE_VIEW (widget);
3101
3102   if (GTK_TREE_VIEW_FLAG_SET (tree_view, GTK_TREE_VIEW_IN_COLUMN_DRAG))
3103     gtk_tree_view_button_release_drag_column (widget, (GdkEventButton *)event);
3104
3105   if (GTK_TREE_VIEW_FLAG_SET (tree_view, GTK_TREE_VIEW_IN_COLUMN_RESIZE))
3106     gtk_tree_view_button_release_column_resize (widget, (GdkEventButton *)event);
3107
3108   return TRUE;
3109 }
3110
3111 #if 0
3112 static gboolean
3113 gtk_tree_view_configure (GtkWidget *widget,
3114                          GdkEventConfigure *event)
3115 {
3116   GtkTreeView *tree_view;
3117
3118   tree_view = GTK_TREE_VIEW (widget);
3119   tree_view->priv->search_position_func (tree_view, tree_view->priv->search_window);
3120
3121   return FALSE;
3122 }
3123 #endif
3124
3125 /* GtkWidget::motion_event function set.
3126  */
3127
3128 static gboolean
3129 coords_are_over_arrow (GtkTreeView *tree_view,
3130                        GtkRBTree   *tree,
3131                        GtkRBNode   *node,
3132                        /* these are in bin window coords */
3133                        gint         x,
3134                        gint         y)
3135 {
3136   GdkRectangle arrow;
3137   gint x2;
3138
3139   if (!gtk_widget_get_realized (GTK_WIDGET (tree_view)))
3140     return FALSE;
3141
3142   if ((node->flags & GTK_RBNODE_IS_PARENT) == 0)
3143     return FALSE;
3144
3145   arrow.y = BACKGROUND_FIRST_PIXEL (tree_view, tree, node);
3146
3147   arrow.height = ROW_HEIGHT (tree_view, BACKGROUND_HEIGHT (node));
3148
3149   gtk_tree_view_get_arrow_xrange (tree_view, tree, &arrow.x, &x2);
3150
3151   arrow.width = x2 - arrow.x;
3152
3153   return (x >= arrow.x &&
3154           x < (arrow.x + arrow.width) &&
3155           y >= arrow.y &&
3156           y < (arrow.y + arrow.height));
3157 }
3158
3159 static gboolean
3160 auto_expand_timeout (gpointer data)
3161 {
3162   GtkTreeView *tree_view = GTK_TREE_VIEW (data);
3163   GtkTreePath *path;
3164
3165   if (tree_view->priv->prelight_node)
3166     {
3167       path = _gtk_tree_view_find_path (tree_view,
3168                                        tree_view->priv->prelight_tree,
3169                                        tree_view->priv->prelight_node);
3170
3171       if (tree_view->priv->prelight_node->children)
3172         gtk_tree_view_collapse_row (tree_view, path);
3173       else
3174         gtk_tree_view_expand_row (tree_view, path, FALSE);
3175
3176       gtk_tree_path_free (path);
3177     }
3178
3179   tree_view->priv->auto_expand_timeout = 0;
3180
3181   return FALSE;
3182 }
3183
3184 static void
3185 remove_auto_expand_timeout (GtkTreeView *tree_view)
3186 {
3187   if (tree_view->priv->auto_expand_timeout != 0)
3188     {
3189       g_source_remove (tree_view->priv->auto_expand_timeout);
3190       tree_view->priv->auto_expand_timeout = 0;
3191     }
3192 }
3193
3194 static void
3195 do_prelight (GtkTreeView *tree_view,
3196              GtkRBTree   *tree,
3197              GtkRBNode   *node,
3198              /* these are in bin_window coords */
3199              gint         x,
3200              gint         y)
3201 {
3202   if (tree_view->priv->prelight_tree == tree &&
3203       tree_view->priv->prelight_node == node)
3204     {
3205       /*  We are still on the same node,
3206           but we might need to take care of the arrow  */
3207
3208       if (tree && node && TREE_VIEW_DRAW_EXPANDERS (tree_view))
3209         {
3210           gboolean over_arrow;
3211           gboolean flag_set;
3212
3213           over_arrow = coords_are_over_arrow (tree_view, tree, node, x, y);
3214           flag_set = GTK_TREE_VIEW_FLAG_SET (tree_view,
3215                                              GTK_TREE_VIEW_ARROW_PRELIT);
3216
3217           if (over_arrow != flag_set)
3218             {
3219               if (over_arrow)
3220                 GTK_TREE_VIEW_SET_FLAG (tree_view,
3221                                         GTK_TREE_VIEW_ARROW_PRELIT);
3222               else
3223                 GTK_TREE_VIEW_UNSET_FLAG (tree_view,
3224                                           GTK_TREE_VIEW_ARROW_PRELIT);
3225
3226               gtk_tree_view_draw_arrow (tree_view, tree, node, x, y);
3227             }
3228         }
3229
3230       return;
3231     }
3232
3233   if (tree_view->priv->prelight_tree && tree_view->priv->prelight_node)
3234     {
3235       /*  Unprelight the old node and arrow  */
3236
3237       GTK_RBNODE_UNSET_FLAG (tree_view->priv->prelight_node,
3238                              GTK_RBNODE_IS_PRELIT);
3239
3240       if (GTK_TREE_VIEW_FLAG_SET (tree_view, GTK_TREE_VIEW_ARROW_PRELIT)
3241           && TREE_VIEW_DRAW_EXPANDERS (tree_view))
3242         {
3243           GTK_TREE_VIEW_UNSET_FLAG (tree_view, GTK_TREE_VIEW_ARROW_PRELIT);
3244
3245           gtk_tree_view_draw_arrow (tree_view,
3246                                     tree_view->priv->prelight_tree,
3247                                     tree_view->priv->prelight_node,
3248                                     x,
3249                                     y);
3250         }
3251
3252       _gtk_tree_view_queue_draw_node (tree_view,
3253                                       tree_view->priv->prelight_tree,
3254                                       tree_view->priv->prelight_node,
3255                                       NULL);
3256     }
3257
3258
3259   if (tree_view->priv->hover_expand)
3260     remove_auto_expand_timeout (tree_view);
3261
3262   /*  Set the new prelight values  */
3263   tree_view->priv->prelight_node = node;
3264   tree_view->priv->prelight_tree = tree;
3265
3266   if (!node || !tree)
3267     return;
3268
3269   /*  Prelight the new node and arrow  */
3270
3271   if (TREE_VIEW_DRAW_EXPANDERS (tree_view)
3272       && coords_are_over_arrow (tree_view, tree, node, x, y))
3273     {
3274       GTK_TREE_VIEW_SET_FLAG (tree_view, GTK_TREE_VIEW_ARROW_PRELIT);
3275
3276       gtk_tree_view_draw_arrow (tree_view, tree, node, x, y);
3277     }
3278
3279   GTK_RBNODE_SET_FLAG (node, GTK_RBNODE_IS_PRELIT);
3280
3281   _gtk_tree_view_queue_draw_node (tree_view, tree, node, NULL);
3282
3283   if (tree_view->priv->hover_expand)
3284     {
3285       tree_view->priv->auto_expand_timeout =
3286         gdk_threads_add_timeout (AUTO_EXPAND_TIMEOUT, auto_expand_timeout, tree_view);
3287     }
3288 }
3289
3290 static void
3291 prelight_or_select (GtkTreeView *tree_view,
3292                     GtkRBTree   *tree,
3293                     GtkRBNode   *node,
3294                     /* these are in bin_window coords */
3295                     gint         x,
3296                     gint         y)
3297 {
3298   GtkSelectionMode mode = gtk_tree_selection_get_mode (tree_view->priv->selection);
3299
3300   if (tree_view->priv->hover_selection &&
3301       (mode == GTK_SELECTION_SINGLE || mode == GTK_SELECTION_BROWSE) &&
3302       !(tree_view->priv->edited_column &&
3303         tree_view->priv->edited_column->editable_widget))
3304     {
3305       if (node)
3306         {
3307           if (!GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_SELECTED))
3308             {
3309               GtkTreePath *path;
3310
3311               path = _gtk_tree_view_find_path (tree_view, tree, node);
3312               gtk_tree_selection_select_path (tree_view->priv->selection, path);
3313               if (GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_SELECTED))
3314                 {
3315                   GTK_TREE_VIEW_UNSET_FLAG (tree_view, GTK_TREE_VIEW_DRAW_KEYFOCUS);
3316                   gtk_tree_view_real_set_cursor (tree_view, path, FALSE, FALSE);
3317                 }
3318               gtk_tree_path_free (path);
3319             }
3320         }
3321
3322       else if (mode == GTK_SELECTION_SINGLE)
3323         gtk_tree_selection_unselect_all (tree_view->priv->selection);
3324     }
3325
3326     do_prelight (tree_view, tree, node, x, y);
3327 }
3328
3329 static void
3330 ensure_unprelighted (GtkTreeView *tree_view)
3331 {
3332   do_prelight (tree_view,
3333                NULL, NULL,
3334                -1000, -1000); /* coords not possibly over an arrow */
3335
3336   g_assert (tree_view->priv->prelight_node == NULL);
3337 }
3338
3339 static void
3340 update_prelight (GtkTreeView *tree_view,
3341                  gint         x,
3342                  gint         y)
3343 {
3344   int new_y;
3345   GtkRBTree *tree;
3346   GtkRBNode *node;
3347
3348   if (tree_view->priv->tree == NULL)
3349     return;
3350
3351   if (x == -10000)
3352     {
3353       ensure_unprelighted (tree_view);
3354       return;
3355     }
3356
3357   new_y = TREE_WINDOW_Y_TO_RBTREE_Y (tree_view, y);
3358   if (new_y < 0)
3359     new_y = 0;
3360
3361   _gtk_rbtree_find_offset (tree_view->priv->tree,
3362                            new_y, &tree, &node);
3363
3364   if (node)
3365     prelight_or_select (tree_view, tree, node, x, y);
3366 }
3367
3368
3369
3370
3371 /* Our motion arrow is either a box (in the case of the original spot)
3372  * or an arrow.  It is expander_size wide.
3373  */
3374 /*
3375  * 11111111111111
3376  * 01111111111110
3377  * 00111111111100
3378  * 00011111111000
3379  * 00001111110000
3380  * 00000111100000
3381  * 00000111100000
3382  * 00000111100000
3383  * ~ ~ ~ ~ ~ ~ ~
3384  * 00000111100000
3385  * 00000111100000
3386  * 00000111100000
3387  * 00001111110000
3388  * 00011111111000
3389  * 00111111111100
3390  * 01111111111110
3391  * 11111111111111
3392  */
3393
3394 static void
3395 gtk_tree_view_motion_draw_column_motion_arrow (GtkTreeView *tree_view)
3396 {
3397   GtkTreeViewColumnReorder *reorder = tree_view->priv->cur_reorder;
3398   GtkWidget *widget = GTK_WIDGET (tree_view);
3399   GdkBitmap *mask = NULL;
3400   gint x;
3401   gint y;
3402   gint width;
3403   gint height;
3404   gint arrow_type = DRAG_COLUMN_WINDOW_STATE_UNSET;
3405   GdkWindowAttr attributes;
3406   guint attributes_mask;
3407   cairo_t *cr;
3408
3409   if (!reorder ||
3410       reorder->left_column == tree_view->priv->drag_column ||
3411       reorder->right_column == tree_view->priv->drag_column)
3412     arrow_type = DRAG_COLUMN_WINDOW_STATE_ORIGINAL;
3413   else if (reorder->left_column || reorder->right_column)
3414     {
3415       GtkAllocation left_allocation, right_allocation;
3416       GdkRectangle visible_rect;
3417
3418       gtk_tree_view_get_visible_rect (tree_view, &visible_rect);
3419       if (reorder->left_column)
3420         {
3421           gtk_widget_get_allocation (reorder->left_column->button, &left_allocation);
3422           x = left_allocation.x + left_allocation.width;
3423         }
3424       else
3425         {
3426           gtk_widget_get_allocation (reorder->right_column->button, &right_allocation);
3427           x = right_allocation.x;
3428         }
3429
3430       if (x < visible_rect.x)
3431         arrow_type = DRAG_COLUMN_WINDOW_STATE_ARROW_LEFT;
3432       else if (x > visible_rect.x + visible_rect.width)
3433         arrow_type = DRAG_COLUMN_WINDOW_STATE_ARROW_RIGHT;
3434       else
3435         arrow_type = DRAG_COLUMN_WINDOW_STATE_ARROW;
3436     }
3437
3438   /* We want to draw the rectangle over the initial location. */
3439   if (arrow_type == DRAG_COLUMN_WINDOW_STATE_ORIGINAL)
3440     {
3441       if (tree_view->priv->drag_column_window_state != DRAG_COLUMN_WINDOW_STATE_ORIGINAL)
3442         {
3443           GtkAllocation drag_allocation;
3444
3445           if (tree_view->priv->drag_highlight_window)
3446             {
3447               gdk_window_set_user_data (tree_view->priv->drag_highlight_window,
3448                                         NULL);
3449               gdk_window_destroy (tree_view->priv->drag_highlight_window);
3450             }
3451
3452           attributes.window_type = GDK_WINDOW_CHILD;
3453           attributes.wclass = GDK_INPUT_OUTPUT;
3454           attributes.x = tree_view->priv->drag_column_x;
3455           attributes.y = 0;
3456           gtk_widget_get_allocation (tree_view->priv->drag_column->button, &drag_allocation);
3457           width = attributes.width = drag_allocation.width;
3458           height = attributes.height = drag_allocation.height;
3459           attributes.visual = gtk_widget_get_visual (GTK_WIDGET (tree_view));
3460           attributes.colormap = gtk_widget_get_colormap (GTK_WIDGET (tree_view));
3461           attributes.event_mask = GDK_VISIBILITY_NOTIFY_MASK | GDK_EXPOSURE_MASK | GDK_POINTER_MOTION_MASK;
3462           attributes_mask = GDK_WA_X | GDK_WA_Y | GDK_WA_VISUAL | GDK_WA_COLORMAP;
3463           tree_view->priv->drag_highlight_window = gdk_window_new (tree_view->priv->header_window, &attributes, attributes_mask);
3464           gdk_window_set_user_data (tree_view->priv->drag_highlight_window, GTK_WIDGET (tree_view));
3465
3466           mask = gdk_pixmap_new (tree_view->priv->drag_highlight_window, width, height, 1);
3467           cr = gdk_cairo_create (mask);
3468
3469           cairo_set_operator (cr, CAIRO_OPERATOR_CLEAR);
3470           cairo_paint (cr);
3471           cairo_set_operator (cr, CAIRO_OPERATOR_SOURCE);
3472           cairo_rectangle (cr, 1, 1, width - 2, height - 2);
3473           cairo_stroke (cr);
3474           cairo_destroy (cr);
3475
3476           gdk_window_shape_combine_mask (tree_view->priv->drag_highlight_window,
3477                                          mask, 0, 0);
3478           if (mask) g_object_unref (mask);
3479           tree_view->priv->drag_column_window_state = DRAG_COLUMN_WINDOW_STATE_ORIGINAL;
3480         }
3481     }
3482   else if (arrow_type == DRAG_COLUMN_WINDOW_STATE_ARROW)
3483     {
3484       GtkAllocation button_allocation;
3485
3486       width = tree_view->priv->expander_size;
3487
3488       /* Get x, y, width, height of arrow */
3489       gdk_window_get_origin (tree_view->priv->header_window, &x, &y);
3490       if (reorder->left_column)
3491         {
3492           gtk_widget_get_allocation (reorder->left_column->button, &button_allocation);
3493           x += button_allocation.x + button_allocation.width - width/2;
3494           height = button_allocation.height;
3495         }
3496       else
3497         {
3498           gtk_widget_get_allocation (reorder->right_column->button, &button_allocation);
3499           x += button_allocation.x - width/2;
3500           height = button_allocation.height;
3501         }
3502       y -= tree_view->priv->expander_size/2; /* The arrow takes up only half the space */
3503       height += tree_view->priv->expander_size;
3504
3505       /* Create the new window */
3506       if (tree_view->priv->drag_column_window_state != DRAG_COLUMN_WINDOW_STATE_ARROW)
3507         {
3508           if (tree_view->priv->drag_highlight_window)
3509             {
3510               gdk_window_set_user_data (tree_view->priv->drag_highlight_window,
3511                                         NULL);
3512               gdk_window_destroy (tree_view->priv->drag_highlight_window);
3513             }
3514
3515           attributes.window_type = GDK_WINDOW_TEMP;
3516           attributes.wclass = GDK_INPUT_OUTPUT;
3517           attributes.visual = gtk_widget_get_visual (GTK_WIDGET (tree_view));
3518           attributes.colormap = gtk_widget_get_colormap (GTK_WIDGET (tree_view));
3519           attributes.event_mask = GDK_VISIBILITY_NOTIFY_MASK | GDK_EXPOSURE_MASK | GDK_POINTER_MOTION_MASK;
3520           attributes_mask = GDK_WA_X | GDK_WA_Y | GDK_WA_VISUAL | GDK_WA_COLORMAP;
3521           attributes.x = x;
3522           attributes.y = y;
3523           attributes.width = width;
3524           attributes.height = height;
3525           tree_view->priv->drag_highlight_window = gdk_window_new (gtk_widget_get_root_window (widget),
3526                                                                    &attributes, attributes_mask);
3527           gdk_window_set_user_data (tree_view->priv->drag_highlight_window, GTK_WIDGET (tree_view));
3528
3529           mask = gdk_pixmap_new (tree_view->priv->drag_highlight_window, width, height, 1);
3530           cr = gdk_cairo_create (mask);
3531
3532           cairo_set_operator (cr, CAIRO_OPERATOR_CLEAR);
3533           cairo_paint (cr);
3534           cairo_set_operator (cr, CAIRO_OPERATOR_SOURCE);
3535           cairo_move_to (cr, 0, 0);
3536           cairo_line_to (cr, width, 0);
3537           cairo_line_to (cr, width / 2., width / 2);
3538           cairo_move_to (cr, 0, height);
3539           cairo_line_to (cr, width, height);
3540           cairo_line_to (cr, width / 2., height - width / 2.);
3541           cairo_fill (cr);
3542
3543           cairo_destroy (cr);
3544           gdk_window_shape_combine_mask (tree_view->priv->drag_highlight_window,
3545                                          mask, 0, 0);
3546           if (mask) g_object_unref (mask);
3547         }
3548
3549       tree_view->priv->drag_column_window_state = DRAG_COLUMN_WINDOW_STATE_ARROW;
3550       gdk_window_move (tree_view->priv->drag_highlight_window, x, y);
3551     }
3552   else if (arrow_type == DRAG_COLUMN_WINDOW_STATE_ARROW_LEFT ||
3553            arrow_type == DRAG_COLUMN_WINDOW_STATE_ARROW_RIGHT)
3554     {
3555       GtkAllocation allocation;
3556
3557       width = tree_view->priv->expander_size;
3558
3559       /* Get x, y, width, height of arrow */
3560       width = width/2; /* remember, the arrow only takes half the available width */
3561       gdk_window_get_origin (gtk_widget_get_window (widget),
3562                              &x, &y);
3563       if (arrow_type == DRAG_COLUMN_WINDOW_STATE_ARROW_RIGHT)
3564         {
3565           gtk_widget_get_allocation (widget, &allocation);
3566           x += allocation.width - width;
3567         }
3568
3569       if (reorder->left_column)
3570         {
3571           gtk_widget_get_allocation (reorder->left_column->button, &allocation);
3572           height = allocation.height;
3573         }
3574       else
3575         {
3576           gtk_widget_get_allocation (reorder->right_column->button, &allocation);
3577           height = allocation.height;
3578         }
3579
3580       y -= tree_view->priv->expander_size;
3581       height += 2*tree_view->priv->expander_size;
3582
3583       /* Create the new window */
3584       if (tree_view->priv->drag_column_window_state != DRAG_COLUMN_WINDOW_STATE_ARROW_LEFT &&
3585           tree_view->priv->drag_column_window_state != DRAG_COLUMN_WINDOW_STATE_ARROW_RIGHT)
3586         {
3587           if (tree_view->priv->drag_highlight_window)
3588             {
3589               gdk_window_set_user_data (tree_view->priv->drag_highlight_window,
3590                                         NULL);
3591               gdk_window_destroy (tree_view->priv->drag_highlight_window);
3592             }
3593
3594           attributes.window_type = GDK_WINDOW_TEMP;
3595           attributes.wclass = GDK_INPUT_OUTPUT;
3596           attributes.visual = gtk_widget_get_visual (GTK_WIDGET (tree_view));
3597           attributes.colormap = gtk_widget_get_colormap (GTK_WIDGET (tree_view));
3598           attributes.event_mask = GDK_VISIBILITY_NOTIFY_MASK | GDK_EXPOSURE_MASK | GDK_POINTER_MOTION_MASK;
3599           attributes_mask = GDK_WA_X | GDK_WA_Y | GDK_WA_VISUAL | GDK_WA_COLORMAP;
3600           attributes.x = x;
3601           attributes.y = y;
3602           attributes.width = width;
3603           attributes.height = height;
3604           tree_view->priv->drag_highlight_window = gdk_window_new (NULL, &attributes, attributes_mask);
3605           gdk_window_set_user_data (tree_view->priv->drag_highlight_window, GTK_WIDGET (tree_view));
3606
3607           mask = gdk_pixmap_new (tree_view->priv->drag_highlight_window, width, height, 1);
3608           cr = gdk_cairo_create (mask);
3609
3610           cairo_set_operator (cr, CAIRO_OPERATOR_CLEAR);
3611           cairo_paint (cr);
3612           cairo_set_operator (cr, CAIRO_OPERATOR_SOURCE);
3613           /* mirror if we're on the left */
3614           if (arrow_type == DRAG_COLUMN_WINDOW_STATE_ARROW_LEFT)
3615             {
3616               cairo_translate (cr, width, 0);
3617               cairo_scale (cr, -1, 1);
3618             }
3619           cairo_move_to (cr, 0, 0);
3620           cairo_line_to (cr, width, width);
3621           cairo_line_to (cr, 0, tree_view->priv->expander_size);
3622           cairo_move_to (cr, 0, height);
3623           cairo_line_to (cr, width, height - width);
3624           cairo_line_to (cr, 0, height - tree_view->priv->expander_size);
3625           cairo_fill (cr);
3626
3627           cairo_destroy (cr);
3628           gdk_window_shape_combine_mask (tree_view->priv->drag_highlight_window,
3629                                          mask, 0, 0);
3630           if (mask) g_object_unref (mask);
3631         }
3632
3633       tree_view->priv->drag_column_window_state = arrow_type;
3634       gdk_window_move (tree_view->priv->drag_highlight_window, x, y);
3635    }
3636   else
3637     {
3638       g_warning (G_STRLOC"Invalid GtkTreeViewColumnReorder struct");
3639       gdk_window_hide (tree_view->priv->drag_highlight_window);
3640       return;
3641     }
3642
3643   gdk_window_show (tree_view->priv->drag_highlight_window);
3644   gdk_window_raise (tree_view->priv->drag_highlight_window);
3645 }
3646
3647 static gboolean
3648 gtk_tree_view_motion_resize_column (GtkWidget      *widget,
3649                                     GdkEventMotion *event)
3650 {
3651   gint x;
3652   gint new_width;
3653   GtkTreeViewColumn *column;
3654   GtkTreeView *tree_view = GTK_TREE_VIEW (widget);
3655
3656   column = gtk_tree_view_get_column (tree_view, tree_view->priv->drag_pos);
3657
3658   if (event->is_hint || event->window != gtk_widget_get_window (widget))
3659     gtk_widget_get_pointer (widget, &x, NULL);
3660   else
3661     x = event->x;
3662
3663   if (tree_view->priv->hadjustment)
3664     x += tree_view->priv->hadjustment->value;
3665
3666   new_width = gtk_tree_view_new_column_width (tree_view,
3667                                               tree_view->priv->drag_pos, &x);
3668   if (x != tree_view->priv->x_drag &&
3669       (new_width != column->fixed_width))
3670     {
3671       column->use_resized_width = TRUE;
3672       column->resized_width = new_width;
3673       if (column->expand)
3674         column->resized_width -= tree_view->priv->last_extra_space_per_column;
3675       gtk_widget_queue_resize (widget);
3676     }
3677
3678   return FALSE;
3679 }
3680
3681
3682 static void
3683 gtk_tree_view_update_current_reorder (GtkTreeView *tree_view)
3684 {
3685   GtkTreeViewColumnReorder *reorder = NULL;
3686   GList *list;
3687   gint mouse_x;
3688
3689   gdk_window_get_pointer (tree_view->priv->header_window, &mouse_x, NULL, NULL);
3690   for (list = tree_view->priv->column_drag_info; list; list = list->next)
3691     {
3692       reorder = (GtkTreeViewColumnReorder *) list->data;
3693       if (mouse_x >= reorder->left_align && mouse_x < reorder->right_align)
3694         break;
3695       reorder = NULL;
3696     }
3697
3698   /*  if (reorder && reorder == tree_view->priv->cur_reorder)
3699       return;*/
3700
3701   tree_view->priv->cur_reorder = reorder;
3702   gtk_tree_view_motion_draw_column_motion_arrow (tree_view);
3703 }
3704
3705 static void
3706 gtk_tree_view_vertical_autoscroll (GtkTreeView *tree_view)
3707 {
3708   GdkRectangle visible_rect;
3709   gint y;
3710   gint offset;
3711
3712   gdk_window_get_pointer (tree_view->priv->bin_window, NULL, &y, NULL);
3713   y += tree_view->priv->dy;
3714
3715   gtk_tree_view_get_visible_rect (tree_view, &visible_rect);
3716
3717   /* see if we are near the edge. */
3718   offset = y - (visible_rect.y + 2 * SCROLL_EDGE_SIZE);
3719   if (offset > 0)
3720     {
3721       offset = y - (visible_rect.y + visible_rect.height - 2 * SCROLL_EDGE_SIZE);
3722       if (offset < 0)
3723         return;
3724     }
3725
3726   gtk_adjustment_set_value (tree_view->priv->vadjustment,
3727                             MAX (tree_view->priv->vadjustment->value + offset, 0.0));
3728 }
3729
3730 static gboolean
3731 gtk_tree_view_horizontal_autoscroll (GtkTreeView *tree_view)
3732 {
3733   GdkRectangle visible_rect;
3734   gint x;
3735   gint offset;
3736
3737   gdk_window_get_pointer (tree_view->priv->bin_window, &x, NULL, NULL);
3738
3739   gtk_tree_view_get_visible_rect (tree_view, &visible_rect);
3740
3741   /* See if we are near the edge. */
3742   offset = x - (visible_rect.x + SCROLL_EDGE_SIZE);
3743   if (offset > 0)
3744     {
3745       offset = x - (visible_rect.x + visible_rect.width - SCROLL_EDGE_SIZE);
3746       if (offset < 0)
3747         return TRUE;
3748     }
3749   offset = offset/3;
3750
3751   gtk_adjustment_set_value (tree_view->priv->hadjustment,
3752                             MAX (tree_view->priv->hadjustment->value + offset, 0.0));
3753
3754   return TRUE;
3755
3756 }
3757
3758 static gboolean
3759 gtk_tree_view_motion_drag_column (GtkWidget      *widget,
3760                                   GdkEventMotion *event)
3761 {
3762   GtkAllocation allocation, button_allocation;
3763   GtkTreeView *tree_view = (GtkTreeView *) widget;
3764   GtkTreeViewColumn *column = tree_view->priv->drag_column;
3765   gint x, y;
3766
3767   /* Sanity Check */
3768   if ((column == NULL) ||
3769       (event->window != tree_view->priv->drag_window))
3770     return FALSE;
3771
3772   /* Handle moving the header */
3773   gdk_window_get_position (tree_view->priv->drag_window, &x, &y);
3774   gtk_widget_get_allocation (widget, &allocation);
3775   gtk_widget_get_allocation (column->button, &button_allocation);
3776   x = CLAMP (x + (gint)event->x - column->drag_x, 0,
3777              MAX (tree_view->priv->width, allocation.width) - button_allocation.width);
3778   gdk_window_move (tree_view->priv->drag_window, x, y);
3779
3780   /* autoscroll, if needed */
3781   gtk_tree_view_horizontal_autoscroll (tree_view);
3782   /* Update the current reorder position and arrow; */
3783   gtk_tree_view_update_current_reorder (tree_view);
3784
3785   return TRUE;
3786 }
3787
3788 static void
3789 gtk_tree_view_stop_rubber_band (GtkTreeView *tree_view)
3790 {
3791   remove_scroll_timeout (tree_view);
3792   gtk_grab_remove (GTK_WIDGET (tree_view));
3793
3794   if (tree_view->priv->rubber_band_status == RUBBER_BAND_ACTIVE)
3795     {
3796       GtkTreePath *tmp_path;
3797
3798       gtk_widget_queue_draw (GTK_WIDGET (tree_view));
3799
3800       /* The anchor path should be set to the start path */
3801       tmp_path = _gtk_tree_view_find_path (tree_view,
3802                                            tree_view->priv->rubber_band_start_tree,
3803                                            tree_view->priv->rubber_band_start_node);
3804
3805       if (tree_view->priv->anchor)
3806         gtk_tree_row_reference_free (tree_view->priv->anchor);
3807
3808       tree_view->priv->anchor =
3809         gtk_tree_row_reference_new_proxy (G_OBJECT (tree_view),
3810                                           tree_view->priv->model,
3811                                           tmp_path);
3812
3813       gtk_tree_path_free (tmp_path);
3814
3815       /* ... and the cursor to the end path */
3816       tmp_path = _gtk_tree_view_find_path (tree_view,
3817                                            tree_view->priv->rubber_band_end_tree,
3818                                            tree_view->priv->rubber_band_end_node);
3819       gtk_tree_view_real_set_cursor (GTK_TREE_VIEW (tree_view), tmp_path, FALSE, FALSE);
3820       gtk_tree_path_free (tmp_path);
3821
3822       _gtk_tree_selection_emit_changed (tree_view->priv->selection);
3823     }
3824
3825   /* Clear status variables */
3826   tree_view->priv->rubber_band_status = RUBBER_BAND_OFF;
3827   tree_view->priv->rubber_band_shift = 0;
3828   tree_view->priv->rubber_band_ctrl = 0;
3829
3830   tree_view->priv->rubber_band_start_node = NULL;
3831   tree_view->priv->rubber_band_start_tree = NULL;
3832   tree_view->priv->rubber_band_end_node = NULL;
3833   tree_view->priv->rubber_band_end_tree = NULL;
3834 }
3835
3836 static void
3837 gtk_tree_view_update_rubber_band_selection_range (GtkTreeView *tree_view,
3838                                                  GtkRBTree   *start_tree,
3839                                                  GtkRBNode   *start_node,
3840                                                  GtkRBTree   *end_tree,
3841                                                  GtkRBNode   *end_node,
3842                                                  gboolean     select,
3843                                                  gboolean     skip_start,
3844                                                  gboolean     skip_end)
3845 {
3846   if (start_node == end_node)
3847     return;
3848
3849   /* We skip the first node and jump inside the loop */
3850   if (skip_start)
3851     goto skip_first;
3852
3853   do
3854     {
3855       /* Small optimization by assuming insensitive nodes are never
3856        * selected.
3857        */
3858       if (!GTK_RBNODE_FLAG_SET (start_node, GTK_RBNODE_IS_SELECTED))
3859         {
3860           GtkTreePath *path;
3861           gboolean selectable;
3862
3863           path = _gtk_tree_view_find_path (tree_view, start_tree, start_node);
3864           selectable = _gtk_tree_selection_row_is_selectable (tree_view->priv->selection, start_node, path);
3865           gtk_tree_path_free (path);
3866
3867           if (!selectable)
3868             goto node_not_selectable;
3869         }
3870
3871       if (select)
3872         {
3873           if (tree_view->priv->rubber_band_shift)
3874             GTK_RBNODE_SET_FLAG (start_node, GTK_RBNODE_IS_SELECTED);
3875           else if (tree_view->priv->rubber_band_ctrl)
3876             {
3877               /* Toggle the selection state */
3878               if (GTK_RBNODE_FLAG_SET (start_node, GTK_RBNODE_IS_SELECTED))
3879                 GTK_RBNODE_UNSET_FLAG (start_node, GTK_RBNODE_IS_SELECTED);
3880               else
3881                 GTK_RBNODE_SET_FLAG (start_node, GTK_RBNODE_IS_SELECTED);
3882             }
3883           else
3884             GTK_RBNODE_SET_FLAG (start_node, GTK_RBNODE_IS_SELECTED);
3885         }
3886       else
3887         {
3888           /* Mirror the above */
3889           if (tree_view->priv->rubber_band_shift)
3890             GTK_RBNODE_UNSET_FLAG (start_node, GTK_RBNODE_IS_SELECTED);
3891           else if (tree_view->priv->rubber_band_ctrl)
3892             {
3893               /* Toggle the selection state */
3894               if (GTK_RBNODE_FLAG_SET (start_node, GTK_RBNODE_IS_SELECTED))
3895                 GTK_RBNODE_UNSET_FLAG (start_node, GTK_RBNODE_IS_SELECTED);
3896               else
3897                 GTK_RBNODE_SET_FLAG (start_node, GTK_RBNODE_IS_SELECTED);
3898             }
3899           else
3900             GTK_RBNODE_UNSET_FLAG (start_node, GTK_RBNODE_IS_SELECTED);
3901         }
3902
3903       _gtk_tree_view_queue_draw_node (tree_view, start_tree, start_node, NULL);
3904
3905 node_not_selectable:
3906       if (start_node == end_node)
3907         break;
3908
3909 skip_first:
3910
3911       if (start_node->children)
3912         {
3913           start_tree = start_node->children;
3914           start_node = start_tree->root;
3915           while (start_node->left != start_tree->nil)
3916             start_node = start_node->left;
3917         }
3918       else
3919         {
3920           _gtk_rbtree_next_full (start_tree, start_node, &start_tree, &start_node);
3921
3922           if (!start_tree)
3923             /* Ran out of tree */
3924             break;
3925         }
3926
3927       if (skip_end && start_node == end_node)
3928         break;
3929     }
3930   while (TRUE);
3931 }
3932
3933 static void
3934 gtk_tree_view_update_rubber_band_selection (GtkTreeView *tree_view)
3935 {
3936   GtkRBTree *start_tree, *end_tree;
3937   GtkRBNode *start_node, *end_node;
3938
3939   _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);
3940   _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);
3941
3942   /* Handle the start area first */
3943   if (!tree_view->priv->rubber_band_start_node)
3944     {
3945       gtk_tree_view_update_rubber_band_selection_range (tree_view,
3946                                                        start_tree,
3947                                                        start_node,
3948                                                        end_tree,
3949                                                        end_node,
3950                                                        TRUE,
3951                                                        FALSE,
3952                                                        FALSE);
3953     }
3954   else if (_gtk_rbtree_node_find_offset (start_tree, start_node) <
3955            _gtk_rbtree_node_find_offset (tree_view->priv->rubber_band_start_tree, tree_view->priv->rubber_band_start_node))
3956     {
3957       /* New node is above the old one; selection became bigger */
3958       gtk_tree_view_update_rubber_band_selection_range (tree_view,
3959                                                        start_tree,
3960                                                        start_node,
3961                                                        tree_view->priv->rubber_band_start_tree,
3962                                                        tree_view->priv->rubber_band_start_node,
3963                                                        TRUE,
3964                                                        FALSE,
3965                                                        TRUE);
3966     }
3967   else if (_gtk_rbtree_node_find_offset (start_tree, start_node) >
3968            _gtk_rbtree_node_find_offset (tree_view->priv->rubber_band_start_tree, tree_view->priv->rubber_band_start_node))
3969     {
3970       /* New node is below the old one; selection became smaller */
3971       gtk_tree_view_update_rubber_band_selection_range (tree_view,
3972                                                        tree_view->priv->rubber_band_start_tree,
3973                                                        tree_view->priv->rubber_band_start_node,
3974                                                        start_tree,
3975                                                        start_node,
3976                                                        FALSE,
3977                                                        FALSE,
3978                                                        TRUE);
3979     }
3980
3981   tree_view->priv->rubber_band_start_tree = start_tree;
3982   tree_view->priv->rubber_band_start_node = start_node;
3983
3984   /* Next, handle the end area */
3985   if (!tree_view->priv->rubber_band_end_node)
3986     {
3987       /* In the event this happens, start_node was also NULL; this case is
3988        * handled above.
3989        */
3990     }
3991   else if (!end_node)
3992     {
3993       /* Find the last node in the tree */
3994       _gtk_rbtree_find_offset (tree_view->priv->tree, tree_view->priv->height - 1,
3995                                &end_tree, &end_node);
3996
3997       /* Selection reached end of the tree */
3998       gtk_tree_view_update_rubber_band_selection_range (tree_view,
3999                                                        tree_view->priv->rubber_band_end_tree,
4000                                                        tree_view->priv->rubber_band_end_node,
4001                                                        end_tree,
4002                                                        end_node,
4003                                                        TRUE,
4004                                                        TRUE,
4005                                                        FALSE);
4006     }
4007   else if (_gtk_rbtree_node_find_offset (end_tree, end_node) >
4008            _gtk_rbtree_node_find_offset (tree_view->priv->rubber_band_end_tree, tree_view->priv->rubber_band_end_node))
4009     {
4010       /* New node is below the old one; selection became bigger */
4011       gtk_tree_view_update_rubber_band_selection_range (tree_view,
4012                                                        tree_view->priv->rubber_band_end_tree,
4013                                                        tree_view->priv->rubber_band_end_node,
4014                                                        end_tree,
4015                                                        end_node,
4016                                                        TRUE,
4017                                                        TRUE,
4018                                                        FALSE);
4019     }
4020   else if (_gtk_rbtree_node_find_offset (end_tree, end_node) <
4021            _gtk_rbtree_node_find_offset (tree_view->priv->rubber_band_end_tree, tree_view->priv->rubber_band_end_node))
4022     {
4023       /* New node is above the old one; selection became smaller */
4024       gtk_tree_view_update_rubber_band_selection_range (tree_view,
4025                                                        end_tree,
4026                                                        end_node,
4027                                                        tree_view->priv->rubber_band_end_tree,
4028                                                        tree_view->priv->rubber_band_end_node,
4029                                                        FALSE,
4030                                                        TRUE,
4031                                                        FALSE);
4032     }
4033
4034   tree_view->priv->rubber_band_end_tree = end_tree;
4035   tree_view->priv->rubber_band_end_node = end_node;
4036 }
4037
4038 static void
4039 gtk_tree_view_update_rubber_band (GtkTreeView *tree_view)
4040 {
4041   gint x, y;
4042   GdkRectangle old_area;
4043   GdkRectangle new_area;
4044   GdkRectangle common;
4045   cairo_region_t *invalid_region;
4046
4047   old_area.x = MIN (tree_view->priv->press_start_x, tree_view->priv->rubber_band_x);
4048   old_area.y = MIN (tree_view->priv->press_start_y, tree_view->priv->rubber_band_y) - tree_view->priv->dy;
4049   old_area.width = ABS (tree_view->priv->rubber_band_x - tree_view->priv->press_start_x) + 1;
4050   old_area.height = ABS (tree_view->priv->rubber_band_y - tree_view->priv->press_start_y) + 1;
4051
4052   gdk_window_get_pointer (tree_view->priv->bin_window, &x, &y, NULL);
4053
4054   x = MAX (x, 0);
4055   y = MAX (y, 0) + tree_view->priv->dy;
4056
4057   new_area.x = MIN (tree_view->priv->press_start_x, x);
4058   new_area.y = MIN (tree_view->priv->press_start_y, y) - tree_view->priv->dy;
4059   new_area.width = ABS (x - tree_view->priv->press_start_x) + 1;
4060   new_area.height = ABS (y - tree_view->priv->press_start_y) + 1;
4061
4062   invalid_region = cairo_region_create_rectangle (&old_area);
4063   cairo_region_union_rectangle (invalid_region, &new_area);
4064
4065   gdk_rectangle_intersect (&old_area, &new_area, &common);
4066   if (common.width > 2 && common.height > 2)
4067     {
4068       cairo_region_t *common_region;
4069
4070       /* make sure the border is invalidated */
4071       common.x += 1;
4072       common.y += 1;
4073       common.width -= 2;
4074       common.height -= 2;
4075
4076       common_region = cairo_region_create_rectangle (&common);
4077
4078       cairo_region_subtract (invalid_region, common_region);
4079       cairo_region_destroy (common_region);
4080     }
4081
4082   gdk_window_invalidate_region (tree_view->priv->bin_window, invalid_region, TRUE);
4083
4084   cairo_region_destroy (invalid_region);
4085
4086   tree_view->priv->rubber_band_x = x;
4087   tree_view->priv->rubber_band_y = y;
4088
4089   gtk_tree_view_update_rubber_band_selection (tree_view);
4090 }
4091
4092 static void
4093 gtk_tree_view_paint_rubber_band (GtkTreeView  *tree_view,
4094                                 GdkRectangle *area)
4095 {
4096   GtkStyle *style;
4097   cairo_t *cr;
4098   GdkRectangle rect;
4099   GdkRectangle rubber_rect;
4100
4101   rubber_rect.x = MIN (tree_view->priv->press_start_x, tree_view->priv->rubber_band_x);
4102   rubber_rect.y = MIN (tree_view->priv->press_start_y, tree_view->priv->rubber_band_y) - tree_view->priv->dy;
4103   rubber_rect.width = ABS (tree_view->priv->press_start_x - tree_view->priv->rubber_band_x) + 1;
4104   rubber_rect.height = ABS (tree_view->priv->press_start_y - tree_view->priv->rubber_band_y) + 1;
4105
4106   if (!gdk_rectangle_intersect (&rubber_rect, area, &rect))
4107     return;
4108
4109   cr = gdk_cairo_create (tree_view->priv->bin_window);
4110   cairo_set_line_width (cr, 1.0);
4111
4112   style = gtk_widget_get_style (GTK_WIDGET (tree_view));
4113
4114   cairo_set_source_rgba (cr,
4115                          style->fg[GTK_STATE_NORMAL].red / 65535.,
4116                          style->fg[GTK_STATE_NORMAL].green / 65535.,
4117                          style->fg[GTK_STATE_NORMAL].blue / 65535.,
4118                          .25);
4119
4120   gdk_cairo_rectangle (cr, &rect);
4121   cairo_clip (cr);
4122   cairo_paint (cr);
4123
4124   cairo_set_source_rgb (cr,
4125                         style->fg[GTK_STATE_NORMAL].red / 65535.,
4126                         style->fg[GTK_STATE_NORMAL].green / 65535.,
4127                         style->fg[GTK_STATE_NORMAL].blue / 65535.);
4128
4129   cairo_rectangle (cr,
4130                    rubber_rect.x + 0.5, rubber_rect.y + 0.5,
4131                    rubber_rect.width - 1, rubber_rect.height - 1);
4132   cairo_stroke (cr);
4133
4134   cairo_destroy (cr);
4135 }
4136
4137 static gboolean
4138 gtk_tree_view_motion_bin_window (GtkWidget      *widget,
4139                                  GdkEventMotion *event)
4140 {
4141   GtkTreeView *tree_view;
4142   GtkRBTree *tree;
4143   GtkRBNode *node;
4144   gint new_y;
4145
4146   tree_view = (GtkTreeView *) widget;
4147
4148   if (tree_view->priv->tree == NULL)
4149     return FALSE;
4150
4151   if (tree_view->priv->rubber_band_status == RUBBER_BAND_MAYBE_START)
4152     {
4153       gtk_grab_add (GTK_WIDGET (tree_view));
4154       gtk_tree_view_update_rubber_band (tree_view);
4155
4156       tree_view->priv->rubber_band_status = RUBBER_BAND_ACTIVE;
4157     }
4158   else if (tree_view->priv->rubber_band_status == RUBBER_BAND_ACTIVE)
4159     {
4160       gtk_tree_view_update_rubber_band (tree_view);
4161
4162       add_scroll_timeout (tree_view);
4163     }
4164
4165   /* only check for an initiated drag when a button is pressed */
4166   if (tree_view->priv->pressed_button >= 0
4167       && !tree_view->priv->rubber_band_status)
4168     gtk_tree_view_maybe_begin_dragging_row (tree_view, event);
4169
4170   new_y = TREE_WINDOW_Y_TO_RBTREE_Y(tree_view, event->y);
4171   if (new_y < 0)
4172     new_y = 0;
4173
4174   _gtk_rbtree_find_offset (tree_view->priv->tree, new_y, &tree, &node);
4175
4176   /* If we are currently pressing down a button, we don't want to prelight anything else. */
4177   if ((tree_view->priv->button_pressed_node != NULL) &&
4178       (tree_view->priv->button_pressed_node != node))
4179     node = NULL;
4180
4181   tree_view->priv->event_last_x = event->x;
4182   tree_view->priv->event_last_y = event->y;
4183
4184   prelight_or_select (tree_view, tree, node, event->x, event->y);
4185
4186   return TRUE;
4187 }
4188
4189 static gboolean
4190 gtk_tree_view_motion (GtkWidget      *widget,
4191                       GdkEventMotion *event)
4192 {
4193   GtkTreeView *tree_view;
4194
4195   tree_view = (GtkTreeView *) widget;
4196
4197   /* Resizing a column */
4198   if (GTK_TREE_VIEW_FLAG_SET (tree_view, GTK_TREE_VIEW_IN_COLUMN_RESIZE))
4199     return gtk_tree_view_motion_resize_column (widget, event);
4200
4201   /* Drag column */
4202   if (GTK_TREE_VIEW_FLAG_SET (tree_view, GTK_TREE_VIEW_IN_COLUMN_DRAG))
4203     return gtk_tree_view_motion_drag_column (widget, event);
4204
4205   /* Sanity check it */
4206   if (event->window == tree_view->priv->bin_window)
4207     return gtk_tree_view_motion_bin_window (widget, event);
4208
4209   return FALSE;
4210 }
4211
4212 /* Invalidate the focus rectangle near the edge of the bin_window; used when
4213  * the tree is empty.
4214  */
4215 static void
4216 invalidate_empty_focus (GtkTreeView *tree_view)
4217 {
4218   GdkRectangle area;
4219
4220   if (!gtk_widget_has_focus (GTK_WIDGET (tree_view)))
4221     return;
4222
4223   area.x = 0;
4224   area.y = 0;
4225   gdk_drawable_get_size (tree_view->priv->bin_window, &area.width, &area.height);
4226   gdk_window_invalidate_rect (tree_view->priv->bin_window, &area, FALSE);
4227 }
4228
4229 /* Draws a focus rectangle near the edge of the bin_window; used when the tree
4230  * is empty.
4231  */
4232 static void
4233 draw_empty_focus (GtkTreeView *tree_view, GdkRectangle *clip_area)
4234 {
4235   GtkWidget *widget = GTK_WIDGET (tree_view);
4236   gint w, h;
4237
4238   if (!gtk_widget_has_focus (widget))
4239     return;
4240
4241   gdk_drawable_get_size (tree_view->priv->bin_window, &w, &h);
4242
4243   w -= 2;
4244   h -= 2;
4245
4246   if (w > 0 && h > 0)
4247     gtk_paint_focus (gtk_widget_get_style (widget),
4248                      tree_view->priv->bin_window,
4249                      gtk_widget_get_state (widget),
4250                      clip_area,
4251                      widget,
4252                      NULL,
4253                      1, 1, w, h);
4254 }
4255
4256 typedef enum {
4257   GTK_TREE_VIEW_GRID_LINE,
4258   GTK_TREE_VIEW_TREE_LINE,
4259   GTK_TREE_VIEW_FOREGROUND_LINE
4260 } GtkTreeViewLineType;
4261
4262 static void
4263 gtk_tree_view_draw_line (GtkTreeView         *tree_view,
4264                          GdkWindow           *window,
4265                          GtkTreeViewLineType  type,
4266                          int                  x1,
4267                          int                  y1,
4268                          int                  x2,
4269                          int                  y2)
4270 {
4271   cairo_t *cr;
4272
4273   cr = gdk_cairo_create (window);
4274
4275   switch (type)
4276     {
4277     case GTK_TREE_VIEW_TREE_LINE:
4278       cairo_set_source_rgb (cr, 0, 0, 0);
4279       cairo_set_line_width (cr, tree_view->priv->tree_line_width);
4280       if (tree_view->priv->tree_line_dashes[0])
4281         cairo_set_dash (cr,
4282                         tree_view->priv->tree_line_dashes,
4283                         2, 0.5);
4284       break;
4285     case GTK_TREE_VIEW_GRID_LINE:
4286       cairo_set_source_rgb (cr, 0, 0, 0);
4287       cairo_set_line_width (cr, tree_view->priv->grid_line_width);
4288       if (tree_view->priv->grid_line_dashes[0])
4289         cairo_set_dash (cr,
4290                         tree_view->priv->grid_line_dashes,
4291                         2, 0.5);
4292       break;
4293     default:
4294       g_assert_not_reached ();
4295       /* fall through */
4296     case GTK_TREE_VIEW_FOREGROUND_LINE:
4297       cairo_set_line_width (cr, 1.0);
4298       gdk_cairo_set_source_color (cr,
4299                                   &gtk_widget_get_style (GTK_WIDGET (tree_view))->fg[gtk_widget_get_state (GTK_WIDGET (tree_view))]);
4300       break;
4301     }
4302
4303   cairo_move_to (cr, x1 + 0.5, y1 + 0.5);
4304   cairo_line_to (cr, x2 + 0.5, y2 + 0.5);
4305   cairo_stroke (cr);
4306
4307   cairo_destroy (cr);
4308 }
4309
4310 static void
4311 gtk_tree_view_draw_grid_lines (GtkTreeView    *tree_view,
4312                                GdkEventExpose *event,
4313                                gint            n_visible_columns)
4314 {
4315   GList *list = tree_view->priv->columns;
4316   gint i = 0;
4317   gint current_x = 0;
4318
4319   if (tree_view->priv->grid_lines != GTK_TREE_VIEW_GRID_LINES_VERTICAL
4320       && tree_view->priv->grid_lines != GTK_TREE_VIEW_GRID_LINES_BOTH)
4321     return;
4322
4323   /* Only draw the lines for visible rows and columns */
4324   for (list = tree_view->priv->columns; list; list = list->next, i++)
4325     {
4326       GtkTreeViewColumn *column = list->data;
4327
4328       /* We don't want a line for the last column */
4329       if (i == n_visible_columns - 1)
4330         break;
4331
4332       if (! column->visible)
4333         continue;
4334
4335       current_x += column->width;
4336
4337       gtk_tree_view_draw_line (tree_view, event->window,
4338                                GTK_TREE_VIEW_GRID_LINE,
4339                                current_x - 1, 0,
4340                                current_x - 1, tree_view->priv->height);
4341     }
4342 }
4343
4344 /* Warning: Very scary function.
4345  * Modify at your own risk
4346  *
4347  * KEEP IN SYNC WITH gtk_tree_view_create_row_drag_icon()!
4348  * FIXME: It's not...
4349  */
4350 static gboolean
4351 gtk_tree_view_bin_expose (GtkWidget      *widget,
4352                           GdkEventExpose *event)
4353 {
4354   GtkTreeView *tree_view = GTK_TREE_VIEW (widget);
4355   GtkTreePath *path;
4356   GtkStyle *style;
4357   GtkRBTree *tree;
4358   GList *list;
4359   GtkRBNode *node;
4360   GtkRBNode *cursor = NULL;
4361   GtkRBTree *cursor_tree = NULL;
4362   GtkRBNode *drag_highlight = NULL;
4363   GtkRBTree *drag_highlight_tree = NULL;
4364   GtkTreeIter iter;
4365   gint new_y;
4366   gint y_offset, cell_offset;
4367   gint max_height;
4368   gint depth;
4369   GdkRectangle background_area;
4370   GdkRectangle cell_area;
4371   guint flags;
4372   gint highlight_x;
4373   gint expander_cell_width;
4374   gint bin_window_width;
4375   gint bin_window_height;
4376   GtkTreePath *cursor_path;
4377   GtkTreePath *drag_dest_path;
4378   GList *first_column, *last_column;
4379   gint vertical_separator;
4380   gint horizontal_separator;
4381   gint focus_line_width;
4382   gboolean allow_rules;
4383   gboolean has_special_cell;
4384   gboolean rtl;
4385   gint n_visible_columns;
4386   gint pointer_x, pointer_y;
4387   gint grid_line_width;
4388   gboolean got_pointer = FALSE;
4389   gboolean draw_vgrid_lines, draw_hgrid_lines;
4390
4391   rtl = (gtk_widget_get_direction (widget) == GTK_TEXT_DIR_RTL);
4392
4393   gtk_widget_style_get (widget,
4394                         "horizontal-separator", &horizontal_separator,
4395                         "vertical-separator", &vertical_separator,
4396                         "allow-rules", &allow_rules,
4397                         "focus-line-width", &focus_line_width,
4398                         NULL);
4399
4400   if (tree_view->priv->tree == NULL)
4401     {
4402       draw_empty_focus (tree_view, &event->area);
4403       return TRUE;
4404     }
4405
4406   /* clip event->area to the visible area */
4407   if (event->area.height < 0)
4408     return TRUE;
4409
4410   validate_visible_area (tree_view);
4411
4412   style = gtk_widget_get_style (widget);
4413
4414   new_y = TREE_WINDOW_Y_TO_RBTREE_Y (tree_view, event->area.y);
4415
4416   if (new_y < 0)
4417     new_y = 0;
4418   y_offset = -_gtk_rbtree_find_offset (tree_view->priv->tree, new_y, &tree, &node);
4419   gdk_drawable_get_size (tree_view->priv->bin_window,
4420                          &bin_window_width, &bin_window_height);
4421
4422   if (tree_view->priv->height < bin_window_height)
4423     {
4424       gtk_paint_flat_box (style,
4425                           event->window,
4426                           gtk_widget_get_state (widget),
4427                           GTK_SHADOW_NONE,
4428                           &event->area,
4429                           widget,
4430                           "cell_even",
4431                           0, tree_view->priv->height,
4432                           bin_window_width,
4433                           bin_window_height - tree_view->priv->height);
4434     }
4435
4436   if (node == NULL)
4437     return TRUE;
4438
4439   /* find the path for the node */
4440   path = _gtk_tree_view_find_path ((GtkTreeView *)widget,
4441                                    tree,
4442                                    node);
4443   gtk_tree_model_get_iter (tree_view->priv->model,
4444                            &iter,
4445                            path);
4446   depth = gtk_tree_path_get_depth (path);
4447   gtk_tree_path_free (path);
4448
4449   cursor_path = NULL;
4450   drag_dest_path = NULL;
4451
4452   if (tree_view->priv->cursor)
4453     cursor_path = gtk_tree_row_reference_get_path (tree_view->priv->cursor);
4454
4455   if (cursor_path)
4456     _gtk_tree_view_find_node (tree_view, cursor_path,
4457                               &cursor_tree, &cursor);
4458
4459   if (tree_view->priv->drag_dest_row)
4460     drag_dest_path = gtk_tree_row_reference_get_path (tree_view->priv->drag_dest_row);
4461
4462   if (drag_dest_path)
4463     _gtk_tree_view_find_node (tree_view, drag_dest_path,
4464                               &drag_highlight_tree, &drag_highlight);
4465
4466   draw_vgrid_lines =
4467     tree_view->priv->grid_lines == GTK_TREE_VIEW_GRID_LINES_VERTICAL
4468     || tree_view->priv->grid_lines == GTK_TREE_VIEW_GRID_LINES_BOTH;
4469   draw_hgrid_lines =
4470     tree_view->priv->grid_lines == GTK_TREE_VIEW_GRID_LINES_HORIZONTAL
4471     || tree_view->priv->grid_lines == GTK_TREE_VIEW_GRID_LINES_BOTH;
4472
4473   if (draw_vgrid_lines || draw_hgrid_lines)
4474     gtk_widget_style_get (widget, "grid-line-width", &grid_line_width, NULL);
4475
4476   n_visible_columns = 0;
4477   for (list = tree_view->priv->columns; list; list = list->next)
4478     {
4479       if (! GTK_TREE_VIEW_COLUMN (list->data)->visible)
4480         continue;
4481       n_visible_columns ++;
4482     }
4483
4484   /* Find the last column */
4485   for (last_column = g_list_last (tree_view->priv->columns);
4486        last_column && !(GTK_TREE_VIEW_COLUMN (last_column->data)->visible);
4487        last_column = last_column->prev)
4488     ;
4489
4490   /* and the first */
4491   for (first_column = g_list_first (tree_view->priv->columns);
4492        first_column && !(GTK_TREE_VIEW_COLUMN (first_column->data)->visible);
4493        first_column = first_column->next)
4494     ;
4495
4496   /* Actually process the expose event.  To do this, we want to
4497    * start at the first node of the event, and walk the tree in
4498    * order, drawing each successive node.
4499    */
4500
4501   do
4502     {
4503       gboolean parity;
4504       gboolean is_separator = FALSE;
4505       gboolean is_first = FALSE;
4506       gboolean is_last = FALSE;
4507
4508       is_separator = row_is_separator (tree_view, &iter, NULL);
4509
4510       max_height = ROW_HEIGHT (tree_view, BACKGROUND_HEIGHT (node));
4511
4512       cell_offset = 0;
4513       highlight_x = 0; /* should match x coord of first cell */
4514       expander_cell_width = 0;
4515
4516       background_area.y = y_offset + event->area.y;
4517       background_area.height = max_height;
4518
4519       flags = 0;
4520
4521       if (GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_PRELIT))
4522         flags |= GTK_CELL_RENDERER_PRELIT;
4523
4524       if (GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_SELECTED))
4525         flags |= GTK_CELL_RENDERER_SELECTED;
4526
4527       parity = _gtk_rbtree_node_find_parity (tree, node);
4528
4529       /* we *need* to set cell data on all cells before the call
4530        * to _has_special_cell, else _has_special_cell() does not
4531        * return a correct value.
4532        */
4533       for (list = (rtl ? g_list_last (tree_view->priv->columns) : g_list_first (tree_view->priv->columns));
4534            list;
4535            list = (rtl ? list->prev : list->next))
4536         {
4537           GtkTreeViewColumn *column = list->data;
4538           gtk_tree_view_column_cell_set_cell_data (column,
4539                                                    tree_view->priv->model,
4540                                                    &iter,
4541                                                    GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_PARENT),
4542                                                    node->children?TRUE:FALSE);
4543         }
4544
4545       has_special_cell = gtk_tree_view_has_special_cell (tree_view);
4546
4547       for (list = (rtl ? g_list_last (tree_view->priv->columns) : g_list_first (tree_view->priv->columns));
4548            list;
4549            list = (rtl ? list->prev : list->next))
4550         {
4551           GtkTreeViewColumn *column = list->data;
4552           const gchar *detail = NULL;
4553           gchar new_detail[128];
4554           GtkStateType state;
4555
4556           if (!column->visible)
4557             continue;
4558
4559           if (cell_offset > event->area.x + event->area.width ||
4560               cell_offset + column->width < event->area.x)
4561             {
4562               cell_offset += column->width;
4563               continue;
4564             }
4565
4566           if (column->show_sort_indicator)
4567             flags |= GTK_CELL_RENDERER_SORTED;
4568           else
4569             flags &= ~GTK_CELL_RENDERER_SORTED;
4570
4571           if (cursor == node)
4572             flags |= GTK_CELL_RENDERER_FOCUSED;
4573           else
4574             flags &= ~GTK_CELL_RENDERER_FOCUSED;
4575
4576           background_area.x = cell_offset;
4577           background_area.width = column->width;
4578
4579           cell_area = background_area;
4580           cell_area.y += vertical_separator / 2;
4581           cell_area.x += horizontal_separator / 2;
4582           cell_area.height -= vertical_separator;
4583           cell_area.width -= horizontal_separator;
4584
4585           if (draw_vgrid_lines)
4586             {
4587               if (list == first_column)
4588                 {
4589                   cell_area.width -= grid_line_width / 2;
4590                 }
4591               else if (list == last_column)
4592                 {
4593                   cell_area.x += grid_line_width / 2;
4594                   cell_area.width -= grid_line_width / 2;
4595                 }
4596               else
4597                 {
4598                   cell_area.x += grid_line_width / 2;
4599                   cell_area.width -= grid_line_width;
4600                 }
4601             }
4602
4603           if (draw_hgrid_lines)
4604             {
4605               cell_area.y += grid_line_width / 2;
4606               cell_area.height -= grid_line_width;
4607             }
4608
4609           if (cairo_region_contains_rectangle (event->region, &background_area) == CAIRO_REGION_OVERLAP_OUT)
4610             {
4611               cell_offset += column->width;
4612               continue;
4613             }
4614
4615           gtk_tree_view_column_cell_set_cell_data (column,
4616                                                    tree_view->priv->model,
4617                                                    &iter,
4618                                                    GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_PARENT),
4619                                                    node->children?TRUE:FALSE);
4620
4621           /* Select the detail for drawing the cell.  relevant
4622            * factors are parity, sortedness, and whether to
4623            * display rules.
4624            */
4625           if (allow_rules && tree_view->priv->has_rules)
4626             {
4627               if ((flags & GTK_CELL_RENDERER_SORTED) &&
4628                   n_visible_columns >= 3)
4629                 {
4630                   if (parity)
4631                     detail = "cell_odd_ruled_sorted";
4632                   else
4633                     detail = "cell_even_ruled_sorted";
4634                 }
4635               else
4636                 {
4637                   if (parity)
4638                     detail = "cell_odd_ruled";
4639                   else
4640                     detail = "cell_even_ruled";
4641                 }
4642             }
4643           else
4644             {
4645               if ((flags & GTK_CELL_RENDERER_SORTED) &&
4646                   n_visible_columns >= 3)
4647                 {
4648                   if (parity)
4649                     detail = "cell_odd_sorted";
4650                   else
4651                     detail = "cell_even_sorted";
4652                 }
4653               else
4654                 {
4655                   if (parity)
4656                     detail = "cell_odd";
4657                   else
4658                     detail = "cell_even";
4659                 }
4660             }
4661
4662           g_assert (detail);
4663
4664           if (gtk_widget_get_state (widget) == GTK_STATE_INSENSITIVE)
4665             state = GTK_STATE_INSENSITIVE;
4666           else if (flags & GTK_CELL_RENDERER_SELECTED)
4667             state = GTK_STATE_SELECTED;
4668           else
4669             state = GTK_STATE_NORMAL;
4670
4671           /* Draw background */
4672           is_first = (rtl ? !list->next : !list->prev);
4673           is_last = (rtl ? !list->prev : !list->next);
4674
4675           /* (I don't like the snprintfs either, but couldn't find a
4676            * less messy way).
4677            */
4678           if (is_first && is_last)
4679             g_snprintf (new_detail, 127, "%s", detail);
4680           else if (is_first)
4681             g_snprintf (new_detail, 127, "%s_start", detail);
4682           else if (is_last)
4683             g_snprintf (new_detail, 127, "%s_end", detail);
4684           else
4685             g_snprintf (new_detail, 127, "%s_middle", detail);
4686
4687           gtk_paint_flat_box (style,
4688                               event->window,
4689                               state,
4690                               GTK_SHADOW_NONE,
4691                               &event->area,
4692                               widget,
4693                               new_detail,
4694                               background_area.x,
4695                               background_area.y,
4696                               background_area.width,
4697                               background_area.height);
4698
4699           if (gtk_tree_view_is_expander_column (tree_view, column))
4700             {
4701               if (!rtl)
4702                 cell_area.x += (depth - 1) * tree_view->priv->level_indentation;
4703               cell_area.width -= (depth - 1) * tree_view->priv->level_indentation;
4704
4705               if (TREE_VIEW_DRAW_EXPANDERS(tree_view))
4706                 {
4707                   if (!rtl)
4708                     cell_area.x += depth * tree_view->priv->expander_size;
4709                   cell_area.width -= depth * tree_view->priv->expander_size;
4710                 }
4711
4712               /* If we have an expander column, the highlight underline
4713                * starts with that column, so that it indicates which
4714                * level of the tree we're dropping at.
4715                */
4716               highlight_x = cell_area.x;
4717               expander_cell_width = cell_area.width;
4718
4719               if (is_separator)
4720                 gtk_paint_hline (style,
4721                                  event->window,
4722                                  state,
4723                                  &cell_area,
4724                                  widget,
4725                                  NULL,
4726                                  cell_area.x,
4727                                  cell_area.x + cell_area.width,
4728                                  cell_area.y + cell_area.height / 2);
4729               else
4730                 _gtk_tree_view_column_cell_render (column,
4731                                                    event->window,
4732                                                    &background_area,
4733                                                    &cell_area,
4734                                                    &event->area,
4735                                                    flags);
4736               if (TREE_VIEW_DRAW_EXPANDERS(tree_view)
4737                   && (node->flags & GTK_RBNODE_IS_PARENT) == GTK_RBNODE_IS_PARENT)
4738                 {
4739                   if (!got_pointer)
4740                     {
4741                       gdk_window_get_pointer (tree_view->priv->bin_window,
4742                                               &pointer_x, &pointer_y, NULL);
4743                       got_pointer = TRUE;
4744                     }
4745
4746                   gtk_tree_view_draw_arrow (GTK_TREE_VIEW (widget),
4747                                             tree,
4748                                             node,
4749                                             pointer_x, pointer_y);
4750                 }
4751             }
4752           else
4753             {
4754               if (is_separator)
4755                 gtk_paint_hline (style,
4756                                  event->window,
4757                                  state,
4758                                  &cell_area,
4759                                  widget,
4760                                  NULL,
4761                                  cell_area.x,
4762                                  cell_area.x + cell_area.width,
4763                                  cell_area.y + cell_area.height / 2);
4764               else
4765                 _gtk_tree_view_column_cell_render (column,
4766                                                    event->window,
4767                                                    &background_area,
4768                                                    &cell_area,
4769                                                    &event->area,
4770                                                    flags);
4771             }
4772
4773           if (draw_hgrid_lines)
4774             {
4775               if (background_area.y > 0)
4776                 gtk_tree_view_draw_line (tree_view, event->window,
4777                                          GTK_TREE_VIEW_GRID_LINE,
4778                                          background_area.x, background_area.y,
4779                                          background_area.x + background_area.width,
4780                                          background_area.y);
4781
4782               if (y_offset + max_height >= event->area.height)
4783                 gtk_tree_view_draw_line (tree_view, event->window,
4784                                          GTK_TREE_VIEW_GRID_LINE,
4785                                          background_area.x, background_area.y + max_height,
4786                                          background_area.x + background_area.width,
4787                                          background_area.y + max_height);
4788             }
4789
4790           if (gtk_tree_view_is_expander_column (tree_view, column) &&
4791               tree_view->priv->tree_lines_enabled)
4792             {
4793               gint x = background_area.x;
4794               gint mult = rtl ? -1 : 1;
4795               gint y0 = background_area.y;
4796               gint y1 = background_area.y + background_area.height/2;
4797               gint y2 = background_area.y + background_area.height;
4798
4799               if (rtl)
4800                 x += background_area.width - 1;
4801
4802               if ((node->flags & GTK_RBNODE_IS_PARENT) == GTK_RBNODE_IS_PARENT
4803                   && depth > 1)
4804                 {
4805                   gtk_tree_view_draw_line (tree_view, event->window,
4806                                            GTK_TREE_VIEW_TREE_LINE,
4807                                            x + tree_view->priv->expander_size * (depth - 1.5) * mult,
4808                                            y1,
4809                                            x + tree_view->priv->expander_size * (depth - 1.1) * mult,
4810                                            y1);
4811                 }
4812               else if (depth > 1)
4813                 {
4814                   gtk_tree_view_draw_line (tree_view, event->window,
4815                                            GTK_TREE_VIEW_TREE_LINE,
4816                                            x + tree_view->priv->expander_size * (depth - 1.5) * mult,
4817                                            y1,
4818                                            x + tree_view->priv->expander_size * (depth - 0.5) * mult,
4819                                            y1);
4820                 }
4821
4822               if (depth > 1)
4823                 {
4824                   gint i;
4825                   GtkRBNode *tmp_node;
4826                   GtkRBTree *tmp_tree;
4827
4828                   if (!_gtk_rbtree_next (tree, node))
4829                     gtk_tree_view_draw_line (tree_view, event->window,
4830                                              GTK_TREE_VIEW_TREE_LINE,
4831                                              x + tree_view->priv->expander_size * (depth - 1.5) * mult,
4832                                              y0,
4833                                              x + tree_view->priv->expander_size * (depth - 1.5) * mult,
4834                                              y1);
4835                   else
4836                     gtk_tree_view_draw_line (tree_view, event->window,
4837                                              GTK_TREE_VIEW_TREE_LINE,
4838                                              x + tree_view->priv->expander_size * (depth - 1.5) * mult,
4839                                              y0,
4840                                              x + tree_view->priv->expander_size * (depth - 1.5) * mult,
4841                                              y2);
4842
4843                   tmp_node = tree->parent_node;
4844                   tmp_tree = tree->parent_tree;
4845
4846                   for (i = depth - 2; i > 0; i--)
4847                     {
4848                       if (_gtk_rbtree_next (tmp_tree, tmp_node))
4849                         gtk_tree_view_draw_line (tree_view, event->window,
4850                                                  GTK_TREE_VIEW_TREE_LINE,
4851                                                  x + tree_view->priv->expander_size * (i - 0.5) * mult,
4852                                                  y0,
4853                                                  x + tree_view->priv->expander_size * (i - 0.5) * mult,
4854                                                  y2);
4855
4856                       tmp_node = tmp_tree->parent_node;
4857                       tmp_tree = tmp_tree->parent_tree;
4858                     }
4859                 }
4860             }
4861
4862           if (node == cursor && has_special_cell &&
4863               ((column == tree_view->priv->focus_column &&
4864                 GTK_TREE_VIEW_FLAG_SET (tree_view, GTK_TREE_VIEW_DRAW_KEYFOCUS) &&
4865                 gtk_widget_has_focus (widget)) ||
4866                (column == tree_view->priv->edited_column)))
4867             {
4868               _gtk_tree_view_column_cell_draw_focus (column,
4869                                                      event->window,
4870                                                      &background_area,
4871                                                      &cell_area,
4872                                                      &event->area,
4873                                                      flags);
4874             }
4875
4876           cell_offset += column->width;
4877         }
4878
4879       if (node == drag_highlight)
4880         {
4881           /* Draw indicator for the drop
4882            */
4883           gint highlight_y = -1;
4884           GtkRBTree *tree = NULL;
4885           GtkRBNode *node = NULL;
4886           gint width;
4887
4888           switch (tree_view->priv->drag_dest_pos)
4889             {
4890             case GTK_TREE_VIEW_DROP_BEFORE:
4891               highlight_y = background_area.y - 1;
4892               if (highlight_y < 0)
4893                       highlight_y = 0;
4894               break;
4895
4896             case GTK_TREE_VIEW_DROP_AFTER:
4897               highlight_y = background_area.y + background_area.height - 1;
4898               break;
4899
4900             case GTK_TREE_VIEW_DROP_INTO_OR_BEFORE:
4901             case GTK_TREE_VIEW_DROP_INTO_OR_AFTER:
4902               _gtk_tree_view_find_node (tree_view, drag_dest_path, &tree, &node);
4903
4904               if (tree == NULL)
4905                 break;
4906               gdk_drawable_get_size (tree_view->priv->bin_window,
4907                                      &width, NULL);
4908
4909               gtk_paint_focus (style,
4910                                tree_view->priv->bin_window,
4911                                gtk_widget_get_state (widget),
4912                                &event->area,
4913                                widget,
4914                                (is_first
4915                                 ? (is_last ? "treeview-drop-indicator" : "treeview-drop-indicator-left" )
4916                                 : (is_last ? "treeview-drop-indicator-right" : "tree-view-drop-indicator-middle" )),
4917                                 0, BACKGROUND_FIRST_PIXEL (tree_view, tree, node)
4918                                    - focus_line_width / 2,
4919                                 width, ROW_HEIGHT (tree_view, BACKGROUND_HEIGHT (node))
4920                                        - focus_line_width + 1);
4921               break;
4922             }
4923
4924           if (highlight_y >= 0)
4925             {
4926               gtk_tree_view_draw_line (tree_view, event->window,
4927                                        GTK_TREE_VIEW_FOREGROUND_LINE,
4928                                        rtl ? highlight_x + expander_cell_width : highlight_x,
4929                                        highlight_y,
4930                                        rtl ? 0 : bin_window_width,
4931                                        highlight_y);
4932             }
4933         }
4934
4935       /* draw the big row-spanning focus rectangle, if needed */
4936       if (!has_special_cell && node == cursor &&
4937           GTK_TREE_VIEW_FLAG_SET (tree_view, GTK_TREE_VIEW_DRAW_KEYFOCUS) &&
4938           gtk_widget_has_focus (widget))
4939         {
4940           gint tmp_y, tmp_height;
4941           gint width;
4942           GtkStateType focus_rect_state;
4943
4944           focus_rect_state =
4945             flags & GTK_CELL_RENDERER_SELECTED ? GTK_STATE_SELECTED :
4946             (flags & GTK_CELL_RENDERER_PRELIT ? GTK_STATE_PRELIGHT :
4947              (flags & GTK_CELL_RENDERER_INSENSITIVE ? GTK_STATE_INSENSITIVE :
4948               GTK_STATE_NORMAL));
4949
4950           gdk_drawable_get_size (tree_view->priv->bin_window,
4951                                  &width, NULL);
4952
4953           if (draw_hgrid_lines)
4954             {
4955               tmp_y = BACKGROUND_FIRST_PIXEL (tree_view, tree, node) + grid_line_width / 2;
4956               tmp_height = ROW_HEIGHT (tree_view, BACKGROUND_HEIGHT (node)) - grid_line_width;
4957             }
4958           else
4959             {
4960               tmp_y = BACKGROUND_FIRST_PIXEL (tree_view, tree, node);
4961               tmp_height = ROW_HEIGHT (tree_view, BACKGROUND_HEIGHT (node));
4962             }
4963
4964           gtk_paint_focus (style,
4965                            tree_view->priv->bin_window,
4966                            focus_rect_state,
4967                            &event->area,
4968                            widget,
4969                            (is_first
4970                             ? (is_last ? "treeview" : "treeview-left" )
4971                             : (is_last ? "treeview-right" : "treeview-middle" )),
4972                            0, tmp_y,
4973                            width, tmp_height);
4974         }
4975
4976       y_offset += max_height;
4977       if (node->children)
4978         {
4979           GtkTreeIter parent = iter;
4980           gboolean has_child;
4981
4982           tree = node->children;
4983           node = tree->root;
4984
4985           g_assert (node != tree->nil);
4986
4987           while (node->left != tree->nil)
4988             node = node->left;
4989           has_child = gtk_tree_model_iter_children (tree_view->priv->model,
4990                                                     &iter,
4991                                                     &parent);
4992           depth++;
4993
4994           /* Sanity Check! */
4995           TREE_VIEW_INTERNAL_ASSERT (has_child, FALSE);
4996         }
4997       else
4998         {
4999           gboolean done = FALSE;
5000
5001           do
5002             {
5003               node = _gtk_rbtree_next (tree, node);
5004               if (node != NULL)
5005                 {
5006                   gboolean has_next = gtk_tree_model_iter_next (tree_view->priv->model, &iter);
5007                   done = TRUE;
5008
5009                   /* Sanity Check! */
5010                   TREE_VIEW_INTERNAL_ASSERT (has_next, FALSE);
5011                 }
5012               else
5013                 {
5014                   GtkTreeIter parent_iter = iter;
5015                   gboolean has_parent;
5016
5017                   node = tree->parent_node;
5018                   tree = tree->parent_tree;
5019                   if (tree == NULL)
5020                     /* we should go to done to free some memory */
5021                     goto done;
5022                   has_parent = gtk_tree_model_iter_parent (tree_view->priv->model,
5023                                                            &iter,
5024                                                            &parent_iter);
5025                   depth--;
5026
5027                   /* Sanity check */
5028                   TREE_VIEW_INTERNAL_ASSERT (has_parent, FALSE);
5029                 }
5030             }
5031           while (!done);
5032         }
5033     }
5034   while (y_offset < event->area.height);
5035
5036 done:
5037   gtk_tree_view_draw_grid_lines (tree_view, event, n_visible_columns);
5038
5039   if (tree_view->priv->rubber_band_status == RUBBER_BAND_ACTIVE)
5040     {
5041       GdkRectangle rectangle;
5042       gint n_rectangles;
5043
5044       n_rectangles = cairo_region_num_rectangles (event->region);
5045
5046       while (n_rectangles--)
5047         {
5048           cairo_region_get_rectangle (event->region, n_rectangles, &rectangle);
5049           gtk_tree_view_paint_rubber_band (tree_view, &rectangle);
5050         }
5051     }
5052
5053   if (cursor_path)
5054     gtk_tree_path_free (cursor_path);
5055
5056   if (drag_dest_path)
5057     gtk_tree_path_free (drag_dest_path);
5058
5059   return FALSE;
5060 }
5061
5062 static gboolean
5063 gtk_tree_view_expose (GtkWidget      *widget,
5064                       GdkEventExpose *event)
5065 {
5066   GtkTreeView *tree_view = GTK_TREE_VIEW (widget);
5067
5068   if (event->window == tree_view->priv->bin_window)
5069     {
5070       gboolean retval;
5071       GList *tmp_list;
5072
5073       retval = gtk_tree_view_bin_expose (widget, event);
5074
5075       /* We can't just chain up to Container::expose as it will try to send the
5076        * event to the headers, so we handle propagating it to our children
5077        * (eg. widgets being edited) ourselves.
5078        */
5079       tmp_list = tree_view->priv->children;
5080       while (tmp_list)
5081         {
5082           GtkTreeViewChild *child = tmp_list->data;
5083           tmp_list = tmp_list->next;
5084
5085           gtk_container_propagate_expose (GTK_CONTAINER (tree_view), child->widget, event);
5086         }
5087
5088       return retval;
5089     }
5090
5091   else if (event->window == tree_view->priv->header_window)
5092     {
5093       GList *list;
5094
5095       for (list = tree_view->priv->columns; list != NULL; list = list->next)
5096         {
5097           GtkTreeViewColumn *column = list->data;
5098
5099           if (column == tree_view->priv->drag_column)
5100             continue;
5101
5102           if (column->visible)
5103             gtk_container_propagate_expose (GTK_CONTAINER (tree_view),
5104                                             column->button,
5105                                             event);
5106         }
5107     }
5108   else if (event->window == tree_view->priv->drag_window)
5109     {
5110       gtk_container_propagate_expose (GTK_CONTAINER (tree_view),
5111                                       tree_view->priv->drag_column->button,
5112                                       event);
5113     }
5114   return TRUE;
5115 }
5116
5117 enum
5118 {
5119   DROP_HOME,
5120   DROP_RIGHT,
5121   DROP_LEFT,
5122   DROP_END
5123 };
5124
5125 /* returns 0x1 when no column has been found -- yes it's hackish */
5126 static GtkTreeViewColumn *
5127 gtk_tree_view_get_drop_column (GtkTreeView       *tree_view,
5128                                GtkTreeViewColumn *column,
5129                                gint               drop_position)
5130 {
5131   GtkTreeViewColumn *left_column = NULL;
5132   GtkTreeViewColumn *cur_column = NULL;
5133   GList *tmp_list;
5134
5135   if (!column->reorderable)
5136     return (GtkTreeViewColumn *)0x1;
5137
5138   switch (drop_position)
5139     {
5140       case DROP_HOME:
5141         /* find first column where we can drop */
5142         tmp_list = tree_view->priv->columns;
5143         if (column == GTK_TREE_VIEW_COLUMN (tmp_list->data))
5144           return (GtkTreeViewColumn *)0x1;
5145
5146         while (tmp_list)
5147           {
5148             g_assert (tmp_list);
5149
5150             cur_column = GTK_TREE_VIEW_COLUMN (tmp_list->data);
5151             tmp_list = tmp_list->next;
5152
5153             if (left_column && left_column->visible == FALSE)
5154               continue;
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_RIGHT:
5178         /* find first column after 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->next)
5186           return (GtkTreeViewColumn *)0x1;
5187
5188         tmp_list = tmp_list->next;
5189         left_column = GTK_TREE_VIEW_COLUMN (tmp_list->data);
5190         tmp_list = tmp_list->next;
5191
5192         while (tmp_list)
5193           {
5194             g_assert (tmp_list);
5195
5196             cur_column = GTK_TREE_VIEW_COLUMN (tmp_list->data);
5197             tmp_list = tmp_list->next;
5198
5199             if (left_column && left_column->visible == FALSE)
5200               {
5201                 left_column = cur_column;
5202                 if (tmp_list)
5203                   tmp_list = tmp_list->next;
5204                 continue;
5205               }
5206
5207             if (!tree_view->priv->column_drop_func)
5208               return left_column;
5209
5210             if (!tree_view->priv->column_drop_func (tree_view, column, left_column, cur_column, tree_view->priv->column_drop_func_data))
5211               {
5212                 left_column = cur_column;
5213                 continue;
5214               }
5215
5216             return left_column;
5217           }
5218
5219         if (!tree_view->priv->column_drop_func)
5220           return left_column;
5221
5222         if (tree_view->priv->column_drop_func (tree_view, column, left_column, NULL, tree_view->priv->column_drop_func_data))
5223           return left_column;
5224         else
5225           return (GtkTreeViewColumn *)0x1;
5226         break;
5227
5228       case DROP_LEFT:
5229         /* find first column before column where we can drop */
5230         tmp_list = tree_view->priv->columns;
5231
5232         for (; tmp_list; tmp_list = tmp_list->next)
5233           if (GTK_TREE_VIEW_COLUMN (tmp_list->data) == column)
5234             break;
5235
5236         if (!tmp_list || !tmp_list->prev)
5237           return (GtkTreeViewColumn *)0x1;
5238
5239         tmp_list = tmp_list->prev;
5240         cur_column = GTK_TREE_VIEW_COLUMN (tmp_list->data);
5241         tmp_list = tmp_list->prev;
5242
5243         while (tmp_list)
5244           {
5245             g_assert (tmp_list);
5246
5247             left_column = GTK_TREE_VIEW_COLUMN (tmp_list->data);
5248
5249             if (left_column && !left_column->visible)
5250               {
5251                 /*if (!tmp_list->prev)
5252                   return (GtkTreeViewColumn *)0x1;
5253                   */
5254 /*
5255                 cur_column = GTK_TREE_VIEW_COLUMN (tmp_list->prev->data);
5256                 tmp_list = tmp_list->prev->prev;
5257                 continue;*/
5258
5259                 cur_column = left_column;
5260                 if (tmp_list)
5261                   tmp_list = tmp_list->prev;
5262                 continue;
5263               }
5264
5265             if (!tree_view->priv->column_drop_func)
5266               return left_column;
5267
5268             if (tree_view->priv->column_drop_func (tree_view, column, left_column, cur_column, tree_view->priv->column_drop_func_data))
5269               return left_column;
5270
5271             cur_column = left_column;
5272             tmp_list = tmp_list->prev;
5273           }
5274
5275         if (!tree_view->priv->column_drop_func)
5276           return NULL;
5277
5278         if (tree_view->priv->column_drop_func (tree_view, column, NULL, cur_column, tree_view->priv->column_drop_func_data))
5279           return NULL;
5280         else
5281           return (GtkTreeViewColumn *)0x1;
5282         break;
5283
5284       case DROP_END:
5285         /* same as DROP_HOME case, but doing it backwards */
5286         tmp_list = g_list_last (tree_view->priv->columns);
5287         cur_column = NULL;
5288
5289         if (column == GTK_TREE_VIEW_COLUMN (tmp_list->data))
5290           return (GtkTreeViewColumn *)0x1;
5291
5292         while (tmp_list)
5293           {
5294             g_assert (tmp_list);
5295
5296             left_column = GTK_TREE_VIEW_COLUMN (tmp_list->data);
5297
5298             if (left_column && !left_column->visible)
5299               {
5300                 cur_column = left_column;
5301                 tmp_list = tmp_list->prev;
5302               }
5303
5304             if (!tree_view->priv->column_drop_func)
5305               return left_column;
5306
5307             if (tree_view->priv->column_drop_func (tree_view, column, left_column, cur_column, tree_view->priv->column_drop_func_data))
5308               return left_column;
5309
5310             cur_column = left_column;
5311             tmp_list = tmp_list->prev;
5312           }
5313
5314         if (!tree_view->priv->column_drop_func)
5315           return NULL;
5316
5317         if (tree_view->priv->column_drop_func (tree_view, column, NULL, cur_column, tree_view->priv->column_drop_func_data))
5318           return NULL;
5319         else
5320           return (GtkTreeViewColumn *)0x1;
5321         break;
5322     }
5323
5324   return (GtkTreeViewColumn *)0x1;
5325 }
5326
5327 static gboolean
5328 gtk_tree_view_key_press (GtkWidget   *widget,
5329                          GdkEventKey *event)
5330 {
5331   GtkTreeView *tree_view = (GtkTreeView *) widget;
5332
5333   if (tree_view->priv->rubber_band_status)
5334     {
5335       if (event->keyval == GDK_KEY_Escape)
5336         gtk_tree_view_stop_rubber_band (tree_view);
5337
5338       return TRUE;
5339     }
5340
5341   if (GTK_TREE_VIEW_FLAG_SET (tree_view, GTK_TREE_VIEW_IN_COLUMN_DRAG))
5342     {
5343       if (event->keyval == GDK_KEY_Escape)
5344         {
5345           tree_view->priv->cur_reorder = NULL;
5346           gtk_tree_view_button_release_drag_column (widget, NULL);
5347         }
5348       return TRUE;
5349     }
5350
5351   if (GTK_TREE_VIEW_FLAG_SET (tree_view, GTK_TREE_VIEW_HEADERS_VISIBLE))
5352     {
5353       GList *focus_column;
5354       gboolean rtl;
5355
5356       rtl = (gtk_widget_get_direction (GTK_WIDGET (tree_view)) == GTK_TEXT_DIR_RTL);
5357
5358       for (focus_column = tree_view->priv->columns;
5359            focus_column;
5360            focus_column = focus_column->next)
5361         {
5362           GtkTreeViewColumn *column = GTK_TREE_VIEW_COLUMN (focus_column->data);
5363
5364           if (gtk_widget_has_focus (column->button))
5365             break;
5366         }
5367
5368       if (focus_column &&
5369           (event->state & GDK_SHIFT_MASK) && (event->state & GDK_MOD1_MASK) &&
5370           (event->keyval == GDK_KEY_Left || event->keyval == GDK_KEY_KP_Left
5371            || event->keyval == GDK_KEY_Right || event->keyval == GDK_KEY_KP_Right))
5372         {
5373           GtkTreeViewColumn *column = GTK_TREE_VIEW_COLUMN (focus_column->data);
5374
5375           if (!column->resizable)
5376             {
5377               gtk_widget_error_bell (widget);
5378               return TRUE;
5379             }
5380
5381           if (event->keyval == (rtl ? GDK_KEY_Right : GDK_KEY_Left)
5382               || event->keyval == (rtl ? GDK_KEY_KP_Right : GDK_KEY_KP_Left))
5383             {
5384               GtkRequisition button_req;
5385               gint old_width = column->resized_width;
5386
5387               gtk_size_request_get_size (GTK_SIZE_REQUEST (column->button), &button_req, NULL);
5388
5389               column->resized_width = MAX (column->resized_width,
5390                                            column->width);
5391               column->resized_width -= 2;
5392               if (column->resized_width < 0)
5393                 column->resized_width = 0;
5394
5395               if (column->min_width == -1)
5396                 column->resized_width = MAX (button_req.width,
5397                                              column->resized_width);
5398               else
5399                 {
5400                   column->resized_width = MAX (column->min_width,
5401                                                column->resized_width);
5402                 }
5403
5404               if (column->max_width != -1)
5405                 column->resized_width = MIN (column->resized_width,
5406                                              column->max_width);
5407
5408               column->use_resized_width = TRUE;
5409
5410               if (column->resized_width != old_width)
5411                 gtk_widget_queue_resize (widget);
5412               else
5413                 gtk_widget_error_bell (widget);
5414             }
5415           else if (event->keyval == (rtl ? GDK_KEY_Left : GDK_KEY_Right)
5416                    || event->keyval == (rtl ? GDK_KEY_KP_Left : GDK_KEY_KP_Right))
5417             {
5418               gint old_width = column->resized_width;
5419
5420               column->resized_width = MAX (column->resized_width,
5421                                            column->width);
5422               column->resized_width += 2;
5423
5424               if (column->max_width != -1)
5425                 column->resized_width = MIN (column->resized_width,
5426                                              column->max_width);
5427
5428               column->use_resized_width = TRUE;
5429
5430               if (column->resized_width != old_width)
5431                 gtk_widget_queue_resize (widget);
5432               else
5433                 gtk_widget_error_bell (widget);
5434             }
5435
5436           return TRUE;
5437         }
5438
5439       if (focus_column &&
5440           (event->state & GDK_MOD1_MASK) &&
5441           (event->keyval == GDK_KEY_Left || event->keyval == GDK_KEY_KP_Left
5442            || event->keyval == GDK_KEY_Right || event->keyval == GDK_KEY_KP_Right
5443            || event->keyval == GDK_KEY_Home || event->keyval == GDK_KEY_KP_Home
5444            || event->keyval == GDK_KEY_End || event->keyval == GDK_KEY_KP_End))
5445         {
5446           GtkTreeViewColumn *column = GTK_TREE_VIEW_COLUMN (focus_column->data);
5447
5448           if (event->keyval == (rtl ? GDK_KEY_Right : GDK_KEY_Left)
5449               || event->keyval == (rtl ? GDK_KEY_KP_Right : GDK_KEY_KP_Left))
5450             {
5451               GtkTreeViewColumn *col;
5452               col = gtk_tree_view_get_drop_column (tree_view, column, DROP_LEFT);
5453               if (col != (GtkTreeViewColumn *)0x1)
5454                 gtk_tree_view_move_column_after (tree_view, column, col);
5455               else
5456                 gtk_widget_error_bell (widget);
5457             }
5458           else if (event->keyval == (rtl ? GDK_KEY_Left : GDK_KEY_Right)
5459                    || event->keyval == (rtl ? GDK_KEY_KP_Left : GDK_KEY_KP_Right))
5460             {
5461               GtkTreeViewColumn *col;
5462               col = gtk_tree_view_get_drop_column (tree_view, column, DROP_RIGHT);
5463               if (col != (GtkTreeViewColumn *)0x1)
5464                 gtk_tree_view_move_column_after (tree_view, column, col);
5465               else
5466                 gtk_widget_error_bell (widget);
5467             }
5468           else if (event->keyval == GDK_KEY_Home || event->keyval == GDK_KEY_KP_Home)
5469             {
5470               GtkTreeViewColumn *col;
5471               col = gtk_tree_view_get_drop_column (tree_view, column, DROP_HOME);
5472               if (col != (GtkTreeViewColumn *)0x1)
5473                 gtk_tree_view_move_column_after (tree_view, column, col);
5474               else
5475                 gtk_widget_error_bell (widget);
5476             }
5477           else if (event->keyval == GDK_KEY_End || event->keyval == GDK_KEY_KP_End)
5478             {
5479               GtkTreeViewColumn *col;
5480               col = gtk_tree_view_get_drop_column (tree_view, column, DROP_END);
5481               if (col != (GtkTreeViewColumn *)0x1)
5482                 gtk_tree_view_move_column_after (tree_view, column, col);
5483               else
5484                 gtk_widget_error_bell (widget);
5485             }
5486
5487           return TRUE;
5488         }
5489     }
5490
5491   /* Chain up to the parent class.  It handles the keybindings. */
5492   if (GTK_WIDGET_CLASS (gtk_tree_view_parent_class)->key_press_event (widget, event))
5493     return TRUE;
5494
5495   if (tree_view->priv->search_entry_avoid_unhandled_binding)
5496     {
5497       tree_view->priv->search_entry_avoid_unhandled_binding = FALSE;
5498       return FALSE;
5499     }
5500
5501   /* We pass the event to the search_entry.  If its text changes, then we start
5502    * the typeahead find capabilities. */
5503   if (gtk_widget_has_focus (GTK_WIDGET (tree_view))
5504       && tree_view->priv->enable_search
5505       && !tree_view->priv->search_custom_entry_set)
5506     {
5507       GdkEvent *new_event;
5508       char *old_text;
5509       const char *new_text;
5510       gboolean retval;
5511       GdkScreen *screen;
5512       gboolean text_modified;
5513       gulong popup_menu_id;
5514
5515       gtk_tree_view_ensure_interactive_directory (tree_view);
5516
5517       /* Make a copy of the current text */
5518       old_text = g_strdup (gtk_entry_get_text (GTK_ENTRY (tree_view->priv->search_entry)));
5519       new_event = gdk_event_copy ((GdkEvent *) event);
5520       g_object_unref (((GdkEventKey *) new_event)->window);
5521       ((GdkEventKey *) new_event)->window = g_object_ref (gtk_widget_get_window (tree_view->priv->search_window));
5522       gtk_widget_realize (tree_view->priv->search_window);
5523
5524       popup_menu_id = g_signal_connect (tree_view->priv->search_entry,
5525                                         "popup-menu", G_CALLBACK (gtk_true),
5526                                         NULL);
5527
5528       /* Move the entry off screen */
5529       screen = gtk_widget_get_screen (GTK_WIDGET (tree_view));
5530       gtk_window_move (GTK_WINDOW (tree_view->priv->search_window),
5531                        gdk_screen_get_width (screen) + 1,
5532                        gdk_screen_get_height (screen) + 1);
5533       gtk_widget_show (tree_view->priv->search_window);
5534
5535       /* Send the event to the window.  If the preedit_changed signal is emitted
5536        * during this event, we will set priv->imcontext_changed  */
5537       tree_view->priv->imcontext_changed = FALSE;
5538       retval = gtk_widget_event (tree_view->priv->search_window, new_event);
5539       gdk_event_free (new_event);
5540       gtk_widget_hide (tree_view->priv->search_window);
5541
5542       g_signal_handler_disconnect (tree_view->priv->search_entry,
5543                                    popup_menu_id);
5544
5545       /* We check to make sure that the entry tried to handle the text, and that
5546        * the text has changed.
5547        */
5548       new_text = gtk_entry_get_text (GTK_ENTRY (tree_view->priv->search_entry));
5549       text_modified = strcmp (old_text, new_text) != 0;
5550       g_free (old_text);
5551       if (tree_view->priv->imcontext_changed ||    /* we're in a preedit */
5552           (retval && text_modified))               /* ...or the text was modified */
5553         {
5554           if (gtk_tree_view_real_start_interactive_search (tree_view,
5555                                                            gdk_event_get_device ((GdkEvent *) event),
5556                                                            FALSE))
5557             {
5558               gtk_widget_grab_focus (GTK_WIDGET (tree_view));
5559               return TRUE;
5560             }
5561           else
5562             {
5563               gtk_entry_set_text (GTK_ENTRY (tree_view->priv->search_entry), "");
5564               return FALSE;
5565             }
5566         }
5567     }
5568
5569   return FALSE;
5570 }
5571
5572 static gboolean
5573 gtk_tree_view_key_release (GtkWidget   *widget,
5574                            GdkEventKey *event)
5575 {
5576   GtkTreeView *tree_view = GTK_TREE_VIEW (widget);
5577
5578   if (tree_view->priv->rubber_band_status)
5579     return TRUE;
5580
5581   return GTK_WIDGET_CLASS (gtk_tree_view_parent_class)->key_release_event (widget, event);
5582 }
5583
5584 /* FIXME Is this function necessary? Can I get an enter_notify event
5585  * w/o either an expose event or a mouse motion event?
5586  */
5587 static gboolean
5588 gtk_tree_view_enter_notify (GtkWidget        *widget,
5589                             GdkEventCrossing *event)
5590 {
5591   GtkTreeView *tree_view = GTK_TREE_VIEW (widget);
5592   GtkRBTree *tree;
5593   GtkRBNode *node;
5594   gint new_y;
5595
5596   /* Sanity check it */
5597   if (event->window != tree_view->priv->bin_window)
5598     return FALSE;
5599
5600   if (tree_view->priv->tree == NULL)
5601     return FALSE;
5602
5603   if (event->mode == GDK_CROSSING_GRAB ||
5604       event->mode == GDK_CROSSING_GTK_GRAB ||
5605       event->mode == GDK_CROSSING_GTK_UNGRAB ||
5606       event->mode == GDK_CROSSING_STATE_CHANGED)
5607     return TRUE;
5608
5609   /* find the node internally */
5610   new_y = TREE_WINDOW_Y_TO_RBTREE_Y(tree_view, event->y);
5611   if (new_y < 0)
5612     new_y = 0;
5613   _gtk_rbtree_find_offset (tree_view->priv->tree, new_y, &tree, &node);
5614
5615   tree_view->priv->event_last_x = event->x;
5616   tree_view->priv->event_last_y = event->y;
5617
5618   if ((tree_view->priv->button_pressed_node == NULL) ||
5619       (tree_view->priv->button_pressed_node == node))
5620     prelight_or_select (tree_view, tree, node, event->x, event->y);
5621
5622   return TRUE;
5623 }
5624
5625 static gboolean
5626 gtk_tree_view_leave_notify (GtkWidget        *widget,
5627                             GdkEventCrossing *event)
5628 {
5629   GtkTreeView *tree_view;
5630
5631   if (event->mode == GDK_CROSSING_GRAB)
5632     return TRUE;
5633
5634   tree_view = GTK_TREE_VIEW (widget);
5635
5636   if (tree_view->priv->prelight_node)
5637     _gtk_tree_view_queue_draw_node (tree_view,
5638                                    tree_view->priv->prelight_tree,
5639                                    tree_view->priv->prelight_node,
5640                                    NULL);
5641
5642   tree_view->priv->event_last_x = -10000;
5643   tree_view->priv->event_last_y = -10000;
5644
5645   prelight_or_select (tree_view,
5646                       NULL, NULL,
5647                       -1000, -1000); /* coords not possibly over an arrow */
5648
5649   return TRUE;
5650 }
5651
5652
5653 static gint
5654 gtk_tree_view_focus_out (GtkWidget     *widget,
5655                          GdkEventFocus *event)
5656 {
5657   GtkTreeView *tree_view;
5658
5659   tree_view = GTK_TREE_VIEW (widget);
5660
5661   gtk_widget_queue_draw (widget);
5662
5663   /* destroy interactive search dialog */
5664   if (tree_view->priv->search_window)
5665     gtk_tree_view_search_dialog_hide (tree_view->priv->search_window, tree_view,
5666                                       gdk_event_get_device ((GdkEvent *) event));
5667
5668   return FALSE;
5669 }
5670
5671
5672 /* Incremental Reflow
5673  */
5674
5675 static void
5676 gtk_tree_view_node_queue_redraw (GtkTreeView *tree_view,
5677                                  GtkRBTree   *tree,
5678                                  GtkRBNode   *node)
5679 {
5680   GtkAllocation allocation;
5681   gint y;
5682
5683   y = _gtk_rbtree_node_find_offset (tree, node)
5684     - tree_view->priv->vadjustment->value
5685     + TREE_VIEW_HEADER_HEIGHT (tree_view);
5686
5687   gtk_widget_get_allocation (GTK_WIDGET (tree_view), &allocation);
5688   gtk_widget_queue_draw_area (GTK_WIDGET (tree_view),
5689                               0, y,
5690                               allocation.width,
5691                               GTK_RBNODE_GET_HEIGHT (node));
5692 }
5693
5694 static gboolean
5695 node_is_visible (GtkTreeView *tree_view,
5696                  GtkRBTree   *tree,
5697                  GtkRBNode   *node)
5698 {
5699   int y;
5700   int height;
5701
5702   y = _gtk_rbtree_node_find_offset (tree, node);
5703   height = ROW_HEIGHT (tree_view, GTK_RBNODE_GET_HEIGHT (node));
5704
5705   if (y >= tree_view->priv->vadjustment->value &&
5706       y + height <= (tree_view->priv->vadjustment->value
5707                      + tree_view->priv->vadjustment->page_size))
5708     return TRUE;
5709
5710   return FALSE;
5711 }
5712
5713 /* Returns TRUE if it updated the size
5714  */
5715 static gboolean
5716 validate_row (GtkTreeView *tree_view,
5717               GtkRBTree   *tree,
5718               GtkRBNode   *node,
5719               GtkTreeIter *iter,
5720               GtkTreePath *path)
5721 {
5722   GtkTreeViewColumn *column;
5723   GList *list, *first_column, *last_column;
5724   gint height = 0;
5725   gint horizontal_separator;
5726   gint vertical_separator;
5727   gint focus_line_width;
5728   gint depth = gtk_tree_path_get_depth (path);
5729   gboolean retval = FALSE;
5730   gboolean is_separator = FALSE;
5731   gboolean draw_vgrid_lines, draw_hgrid_lines;
5732   gint focus_pad;
5733   gint grid_line_width;
5734   gboolean wide_separators;
5735   gint separator_height;
5736
5737   /* double check the row needs validating */
5738   if (! GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_INVALID) &&
5739       ! GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_COLUMN_INVALID))
5740     return FALSE;
5741
5742   is_separator = row_is_separator (tree_view, iter, NULL);
5743
5744   gtk_widget_style_get (GTK_WIDGET (tree_view),
5745                         "focus-padding", &focus_pad,
5746                         "focus-line-width", &focus_line_width,
5747                         "horizontal-separator", &horizontal_separator,
5748                         "vertical-separator", &vertical_separator,
5749                         "grid-line-width", &grid_line_width,
5750                         "wide-separators",  &wide_separators,
5751                         "separator-height", &separator_height,
5752                         NULL);
5753
5754   draw_vgrid_lines =
5755     tree_view->priv->grid_lines == GTK_TREE_VIEW_GRID_LINES_VERTICAL
5756     || tree_view->priv->grid_lines == GTK_TREE_VIEW_GRID_LINES_BOTH;
5757   draw_hgrid_lines =
5758     tree_view->priv->grid_lines == GTK_TREE_VIEW_GRID_LINES_HORIZONTAL
5759     || tree_view->priv->grid_lines == GTK_TREE_VIEW_GRID_LINES_BOTH;
5760
5761   for (last_column = g_list_last (tree_view->priv->columns);
5762        last_column && !(GTK_TREE_VIEW_COLUMN (last_column->data)->visible);
5763        last_column = last_column->prev)
5764     ;
5765
5766   for (first_column = g_list_first (tree_view->priv->columns);
5767        first_column && !(GTK_TREE_VIEW_COLUMN (first_column->data)->visible);
5768        first_column = first_column->next)
5769     ;
5770
5771   for (list = tree_view->priv->columns; list; list = list->next)
5772     {
5773       gint tmp_width;
5774       gint tmp_height;
5775
5776       column = list->data;
5777
5778       if (! column->visible)
5779         continue;
5780
5781       if (GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_COLUMN_INVALID) && !column->dirty)
5782         continue;
5783
5784       gtk_tree_view_column_cell_set_cell_data (column, tree_view->priv->model, iter,
5785                                                GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_PARENT),
5786                                                node->children?TRUE:FALSE);
5787       gtk_tree_view_column_cell_get_size (column,
5788                                           NULL, NULL, NULL,
5789                                           &tmp_width, &tmp_height);
5790
5791       if (!is_separator)
5792         {
5793           tmp_height += vertical_separator;
5794           height = MAX (height, tmp_height);
5795           height = MAX (height, tree_view->priv->expander_size);
5796         }
5797       else
5798         {
5799           if (wide_separators)
5800             height = separator_height + 2 * focus_pad;
5801           else
5802             height = 2 + 2 * focus_pad;
5803         }
5804
5805       if (gtk_tree_view_is_expander_column (tree_view, column))
5806         {
5807           tmp_width = tmp_width + horizontal_separator + (depth - 1) * tree_view->priv->level_indentation;
5808
5809           if (TREE_VIEW_DRAW_EXPANDERS (tree_view))
5810             tmp_width += depth * tree_view->priv->expander_size;
5811         }
5812       else
5813         tmp_width = tmp_width + horizontal_separator;
5814
5815       if (draw_vgrid_lines)
5816         {
5817           if (list->data == first_column || list->data == last_column)
5818             tmp_width += grid_line_width / 2.0;
5819           else
5820             tmp_width += grid_line_width;
5821         }
5822
5823       if (tmp_width > column->requested_width)
5824         {
5825           retval = TRUE;
5826           column->requested_width = tmp_width;
5827         }
5828     }
5829
5830   if (draw_hgrid_lines)
5831     height += grid_line_width;
5832
5833   if (height != GTK_RBNODE_GET_HEIGHT (node))
5834     {
5835       retval = TRUE;
5836       _gtk_rbtree_node_set_height (tree, node, height);
5837     }
5838   _gtk_rbtree_node_mark_valid (tree, node);
5839   tree_view->priv->post_validation_flag = TRUE;
5840
5841   return retval;
5842 }
5843
5844
5845 static void
5846 validate_visible_area (GtkTreeView *tree_view)
5847 {
5848   GtkAllocation allocation;
5849   GtkTreePath *path = NULL;
5850   GtkTreePath *above_path = NULL;
5851   GtkTreeIter iter;
5852   GtkRBTree *tree = NULL;
5853   GtkRBNode *node = NULL;
5854   gboolean need_redraw = FALSE;
5855   gboolean size_changed = FALSE;
5856   gint total_height;
5857   gint area_above = 0;
5858   gint area_below = 0;
5859
5860   if (tree_view->priv->tree == NULL)
5861     return;
5862
5863   if (! GTK_RBNODE_FLAG_SET (tree_view->priv->tree->root, GTK_RBNODE_DESCENDANTS_INVALID) &&
5864       tree_view->priv->scroll_to_path == NULL)
5865     return;
5866
5867   gtk_widget_get_allocation (GTK_WIDGET (tree_view), &allocation);
5868   total_height = allocation.height - TREE_VIEW_HEADER_HEIGHT (tree_view);
5869
5870   if (total_height == 0)
5871     return;
5872
5873   /* First, we check to see if we need to scroll anywhere
5874    */
5875   if (tree_view->priv->scroll_to_path)
5876     {
5877       path = gtk_tree_row_reference_get_path (tree_view->priv->scroll_to_path);
5878       if (path && !_gtk_tree_view_find_node (tree_view, path, &tree, &node))
5879         {
5880           /* we are going to scroll, and will update dy */
5881           gtk_tree_model_get_iter (tree_view->priv->model, &iter, path);
5882           if (GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_INVALID) ||
5883               GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_COLUMN_INVALID))
5884             {
5885               _gtk_tree_view_queue_draw_node (tree_view, tree, node, NULL);
5886               if (validate_row (tree_view, tree, node, &iter, path))
5887                 size_changed = TRUE;
5888             }
5889
5890           if (tree_view->priv->scroll_to_use_align)
5891             {
5892               gint height = ROW_HEIGHT (tree_view, GTK_RBNODE_GET_HEIGHT (node));
5893               area_above = (total_height - height) *
5894                 tree_view->priv->scroll_to_row_align;
5895               area_below = total_height - area_above - height;
5896               area_above = MAX (area_above, 0);
5897               area_below = MAX (area_below, 0);
5898             }
5899           else
5900             {
5901               /* two cases:
5902                * 1) row not visible
5903                * 2) row visible
5904                */
5905               gint dy;
5906               gint height = ROW_HEIGHT (tree_view, GTK_RBNODE_GET_HEIGHT (node));
5907
5908               dy = _gtk_rbtree_node_find_offset (tree, node);
5909
5910               if (dy >= tree_view->priv->vadjustment->value &&
5911                   dy + height <= (tree_view->priv->vadjustment->value
5912                                   + tree_view->priv->vadjustment->page_size))
5913                 {
5914                   /* row visible: keep the row at the same position */
5915                   area_above = dy - tree_view->priv->vadjustment->value;
5916                   area_below = (tree_view->priv->vadjustment->value +
5917                                 tree_view->priv->vadjustment->page_size)
5918                                - dy - height;
5919                 }
5920               else
5921                 {
5922                   /* row not visible */
5923                   if (dy >= 0
5924                       && dy + height <= tree_view->priv->vadjustment->page_size)
5925                     {
5926                       /* row at the beginning -- fixed */
5927                       area_above = dy;
5928                       area_below = tree_view->priv->vadjustment->page_size
5929                                    - area_above - height;
5930                     }
5931                   else if (dy >= (tree_view->priv->vadjustment->upper -
5932                                   tree_view->priv->vadjustment->page_size))
5933                     {
5934                       /* row at the end -- fixed */
5935                       area_above = dy - (tree_view->priv->vadjustment->upper -
5936                                    tree_view->priv->vadjustment->page_size);
5937                       area_below = tree_view->priv->vadjustment->page_size -
5938                                    area_above - height;
5939
5940                       if (area_below < 0)
5941                         {
5942                           area_above = tree_view->priv->vadjustment->page_size - height;
5943                           area_below = 0;
5944                         }
5945                     }
5946                   else
5947                     {
5948                       /* row somewhere in the middle, bring it to the top
5949                        * of the view
5950                        */
5951                       area_above = 0;
5952                       area_below = total_height - height;
5953                     }
5954                 }
5955             }
5956         }
5957       else
5958         /* the scroll to isn't valid; ignore it.
5959          */
5960         {
5961           if (tree_view->priv->scroll_to_path && !path)
5962             {
5963               gtk_tree_row_reference_free (tree_view->priv->scroll_to_path);
5964               tree_view->priv->scroll_to_path = NULL;
5965             }
5966           if (path)
5967             gtk_tree_path_free (path);
5968           path = NULL;
5969         }
5970     }
5971
5972   /* We didn't have a scroll_to set, so we just handle things normally
5973    */
5974   if (path == NULL)
5975     {
5976       gint offset;
5977
5978       offset = _gtk_rbtree_find_offset (tree_view->priv->tree,
5979                                         TREE_WINDOW_Y_TO_RBTREE_Y (tree_view, 0),
5980                                         &tree, &node);
5981       if (node == NULL)
5982         {
5983           /* In this case, nothing has been validated */
5984           path = gtk_tree_path_new_first ();
5985           _gtk_tree_view_find_node (tree_view, path, &tree, &node);
5986         }
5987       else
5988         {
5989           path = _gtk_tree_view_find_path (tree_view, tree, node);
5990           total_height += offset;
5991         }
5992
5993       gtk_tree_model_get_iter (tree_view->priv->model, &iter, path);
5994
5995       if (GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_INVALID) ||
5996           GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_COLUMN_INVALID))
5997         {
5998           _gtk_tree_view_queue_draw_node (tree_view, tree, node, NULL);
5999           if (validate_row (tree_view, tree, node, &iter, path))
6000             size_changed = TRUE;
6001         }
6002       area_above = 0;
6003       area_below = total_height - ROW_HEIGHT (tree_view, GTK_RBNODE_GET_HEIGHT (node));
6004     }
6005
6006   above_path = gtk_tree_path_copy (path);
6007
6008   /* if we do not validate any row above the new top_row, we will make sure
6009    * that the row immediately above top_row has been validated. (if we do not
6010    * do this, _gtk_rbtree_find_offset will find the row above top_row, because
6011    * when invalidated that row's height will be zero. and this will mess up
6012    * scrolling).
6013    */
6014   if (area_above == 0)
6015     {
6016       GtkRBTree *tmptree;
6017       GtkRBNode *tmpnode;
6018
6019       _gtk_tree_view_find_node (tree_view, above_path, &tmptree, &tmpnode);
6020       _gtk_rbtree_prev_full (tmptree, tmpnode, &tmptree, &tmpnode);
6021
6022       if (tmpnode)
6023         {
6024           GtkTreePath *tmppath;
6025           GtkTreeIter tmpiter;
6026
6027           tmppath = _gtk_tree_view_find_path (tree_view, tmptree, tmpnode);
6028           gtk_tree_model_get_iter (tree_view->priv->model, &tmpiter, tmppath);
6029
6030           if (GTK_RBNODE_FLAG_SET (tmpnode, GTK_RBNODE_INVALID) ||
6031               GTK_RBNODE_FLAG_SET (tmpnode, GTK_RBNODE_COLUMN_INVALID))
6032             {
6033               _gtk_tree_view_queue_draw_node (tree_view, tmptree, tmpnode, NULL);
6034               if (validate_row (tree_view, tmptree, tmpnode, &tmpiter, tmppath))
6035                 size_changed = TRUE;
6036             }
6037
6038           gtk_tree_path_free (tmppath);
6039         }
6040     }
6041
6042   /* Now, we walk forwards and backwards, measuring rows. Unfortunately,
6043    * backwards is much slower then forward, as there is no iter_prev function.
6044    * We go forwards first in case we run out of tree.  Then we go backwards to
6045    * fill out the top.
6046    */
6047   while (node && area_below > 0)
6048     {
6049       if (node->children)
6050         {
6051           GtkTreeIter parent = iter;
6052           gboolean has_child;
6053
6054           tree = node->children;
6055           node = tree->root;
6056
6057           g_assert (node != tree->nil);
6058
6059           while (node->left != tree->nil)
6060             node = node->left;
6061           has_child = gtk_tree_model_iter_children (tree_view->priv->model,
6062                                                     &iter,
6063                                                     &parent);
6064           TREE_VIEW_INTERNAL_ASSERT_VOID (has_child);
6065           gtk_tree_path_down (path);
6066         }
6067       else
6068         {
6069           gboolean done = FALSE;
6070           do
6071             {
6072               node = _gtk_rbtree_next (tree, node);
6073               if (node != NULL)
6074                 {
6075                   gboolean has_next = gtk_tree_model_iter_next (tree_view->priv->model, &iter);
6076                   done = TRUE;
6077                   gtk_tree_path_next (path);
6078
6079                   /* Sanity Check! */
6080                   TREE_VIEW_INTERNAL_ASSERT_VOID (has_next);
6081                 }
6082               else
6083                 {
6084                   GtkTreeIter parent_iter = iter;
6085                   gboolean has_parent;
6086
6087                   node = tree->parent_node;
6088                   tree = tree->parent_tree;
6089                   if (tree == NULL)
6090                     break;
6091                   has_parent = gtk_tree_model_iter_parent (tree_view->priv->model,
6092                                                            &iter,
6093                                                            &parent_iter);
6094                   gtk_tree_path_up (path);
6095
6096                   /* Sanity check */
6097                   TREE_VIEW_INTERNAL_ASSERT_VOID (has_parent);
6098                 }
6099             }
6100           while (!done);
6101         }
6102
6103       if (!node)
6104         break;
6105
6106       if (GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_INVALID) ||
6107           GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_COLUMN_INVALID))
6108         {
6109           _gtk_tree_view_queue_draw_node (tree_view, tree, node, NULL);
6110           if (validate_row (tree_view, tree, node, &iter, path))
6111               size_changed = TRUE;
6112         }
6113
6114       area_below -= ROW_HEIGHT (tree_view, GTK_RBNODE_GET_HEIGHT (node));
6115     }
6116   gtk_tree_path_free (path);
6117
6118   /* If we ran out of tree, and have extra area_below left, we need to add it
6119    * to area_above */
6120   if (area_below > 0)
6121     area_above += area_below;
6122
6123   _gtk_tree_view_find_node (tree_view, above_path, &tree, &node);
6124
6125   /* We walk backwards */
6126   while (area_above > 0)
6127     {
6128       _gtk_rbtree_prev_full (tree, node, &tree, &node);
6129
6130       /* Always find the new path in the tree.  We cannot just assume
6131        * a gtk_tree_path_prev() is enough here, as there might be children
6132        * in between this node and the previous sibling node.  If this
6133        * appears to be a performance hotspot in profiles, we can look into
6134        * intrigate logic for keeping path, node and iter in sync like
6135        * we do for forward walks.  (Which will be hard because of the lacking
6136        * iter_prev).
6137        */
6138
6139       if (node == NULL)
6140         break;
6141
6142       gtk_tree_path_free (above_path);
6143       above_path = _gtk_tree_view_find_path (tree_view, tree, node);
6144
6145       gtk_tree_model_get_iter (tree_view->priv->model, &iter, above_path);
6146
6147       if (GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_INVALID) ||
6148           GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_COLUMN_INVALID))
6149         {
6150           _gtk_tree_view_queue_draw_node (tree_view, tree, node, NULL);
6151           if (validate_row (tree_view, tree, node, &iter, above_path))
6152             size_changed = TRUE;
6153         }
6154       area_above -= ROW_HEIGHT (tree_view, GTK_RBNODE_GET_HEIGHT (node));
6155     }
6156
6157   /* if we scrolled to a path, we need to set the dy here,
6158    * and sync the top row accordingly
6159    */
6160   if (tree_view->priv->scroll_to_path)
6161     {
6162       gtk_tree_view_set_top_row (tree_view, above_path, -area_above);
6163       gtk_tree_view_top_row_to_dy (tree_view);
6164
6165       need_redraw = TRUE;
6166     }
6167   else if (tree_view->priv->height <= tree_view->priv->vadjustment->page_size)
6168     {
6169       /* when we are not scrolling, we should never set dy to something
6170        * else than zero. we update top_row to be in sync with dy = 0.
6171        */
6172       gtk_adjustment_set_value (GTK_ADJUSTMENT (tree_view->priv->vadjustment), 0);
6173       gtk_tree_view_dy_to_top_row (tree_view);
6174     }
6175   else if (tree_view->priv->vadjustment->value + tree_view->priv->vadjustment->page_size > tree_view->priv->height)
6176     {
6177       gtk_adjustment_set_value (GTK_ADJUSTMENT (tree_view->priv->vadjustment), tree_view->priv->height - tree_view->priv->vadjustment->page_size);
6178       gtk_tree_view_dy_to_top_row (tree_view);
6179     }
6180   else
6181     gtk_tree_view_top_row_to_dy (tree_view);
6182
6183   /* update width/height and queue a resize */
6184   if (size_changed)
6185     {
6186       GtkRequisition requisition;
6187
6188       /* We temporarily guess a size, under the assumption that it will be the
6189        * same when we get our next size_allocate.  If we don't do this, we'll be
6190        * in an inconsistent state if we call top_row_to_dy. */
6191
6192       gtk_widget_size_request (GTK_WIDGET (tree_view), &requisition);
6193       tree_view->priv->hadjustment->upper = MAX (tree_view->priv->hadjustment->upper, (gfloat)requisition.width);
6194       tree_view->priv->vadjustment->upper = MAX (tree_view->priv->vadjustment->upper, (gfloat)requisition.height);
6195       gtk_adjustment_changed (tree_view->priv->hadjustment);
6196       gtk_adjustment_changed (tree_view->priv->vadjustment);
6197       gtk_widget_queue_resize (GTK_WIDGET (tree_view));
6198     }
6199
6200   if (tree_view->priv->scroll_to_path)
6201     {
6202       gtk_tree_row_reference_free (tree_view->priv->scroll_to_path);
6203       tree_view->priv->scroll_to_path = NULL;
6204     }
6205
6206   if (above_path)
6207     gtk_tree_path_free (above_path);
6208
6209   if (tree_view->priv->scroll_to_column)
6210     {
6211       tree_view->priv->scroll_to_column = NULL;
6212     }
6213   if (need_redraw)
6214     gtk_widget_queue_draw (GTK_WIDGET (tree_view));
6215 }
6216
6217 static void
6218 initialize_fixed_height_mode (GtkTreeView *tree_view)
6219 {
6220   if (!tree_view->priv->tree)
6221     return;
6222
6223   if (tree_view->priv->fixed_height < 0)
6224     {
6225       GtkTreeIter iter;
6226       GtkTreePath *path;
6227
6228       GtkRBTree *tree = NULL;
6229       GtkRBNode *node = NULL;
6230
6231       tree = tree_view->priv->tree;
6232       node = tree->root;
6233
6234       path = _gtk_tree_view_find_path (tree_view, tree, node);
6235       gtk_tree_model_get_iter (tree_view->priv->model, &iter, path);
6236
6237       validate_row (tree_view, tree, node, &iter, path);
6238
6239       gtk_tree_path_free (path);
6240
6241       tree_view->priv->fixed_height = ROW_HEIGHT (tree_view, GTK_RBNODE_GET_HEIGHT (node));
6242     }
6243
6244    _gtk_rbtree_set_fixed_height (tree_view->priv->tree,
6245                                  tree_view->priv->fixed_height, TRUE);
6246 }
6247
6248 /* Our strategy for finding nodes to validate is a little convoluted.  We find
6249  * the left-most uninvalidated node.  We then try walking right, validating
6250  * nodes.  Once we find a valid node, we repeat the previous process of finding
6251  * the first invalid node.
6252  */
6253
6254 static gboolean
6255 do_validate_rows (GtkTreeView *tree_view, gboolean queue_resize)
6256 {
6257   GtkRBTree *tree = NULL;
6258   GtkRBNode *node = NULL;
6259   gboolean validated_area = FALSE;
6260   gint retval = TRUE;
6261   GtkTreePath *path = NULL;
6262   GtkTreeIter iter;
6263   GTimer *timer;
6264   gint i = 0;
6265
6266   gint prev_height = -1;
6267   gboolean fixed_height = TRUE;
6268
6269   g_assert (tree_view);
6270
6271   if (tree_view->priv->tree == NULL)
6272       return FALSE;
6273
6274   if (tree_view->priv->fixed_height_mode)
6275     {
6276       if (tree_view->priv->fixed_height < 0)
6277         initialize_fixed_height_mode (tree_view);
6278
6279       return FALSE;
6280     }
6281
6282   timer = g_timer_new ();
6283   g_timer_start (timer);
6284
6285   do
6286     {
6287       if (! GTK_RBNODE_FLAG_SET (tree_view->priv->tree->root, GTK_RBNODE_DESCENDANTS_INVALID))
6288         {
6289           retval = FALSE;
6290           goto done;
6291         }
6292
6293       if (path != NULL)
6294         {
6295           node = _gtk_rbtree_next (tree, node);
6296           if (node != NULL)
6297             {
6298               TREE_VIEW_INTERNAL_ASSERT (gtk_tree_model_iter_next (tree_view->priv->model, &iter), FALSE);
6299               gtk_tree_path_next (path);
6300             }
6301           else
6302             {
6303               gtk_tree_path_free (path);
6304               path = NULL;
6305             }
6306         }
6307
6308       if (path == NULL)
6309         {
6310           tree = tree_view->priv->tree;
6311           node = tree_view->priv->tree->root;
6312
6313           g_assert (GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_DESCENDANTS_INVALID));
6314
6315           do
6316             {
6317               if (node->left != tree->nil &&
6318                   GTK_RBNODE_FLAG_SET (node->left, GTK_RBNODE_DESCENDANTS_INVALID))
6319                 {
6320                   node = node->left;
6321                 }
6322               else if (node->right != tree->nil &&
6323                        GTK_RBNODE_FLAG_SET (node->right, GTK_RBNODE_DESCENDANTS_INVALID))
6324                 {
6325                   node = node->right;
6326                 }
6327               else if (GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_INVALID) ||
6328                        GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_COLUMN_INVALID))
6329                 {
6330                   break;
6331                 }
6332               else if (node->children != NULL)
6333                 {
6334                   tree = node->children;
6335                   node = tree->root;
6336                 }
6337               else
6338                 /* RBTree corruption!  All bad */
6339                 g_assert_not_reached ();
6340             }
6341           while (TRUE);
6342           path = _gtk_tree_view_find_path (tree_view, tree, node);
6343           gtk_tree_model_get_iter (tree_view->priv->model, &iter, path);
6344         }
6345
6346       validated_area = validate_row (tree_view, tree, node, &iter, path) ||
6347                        validated_area;
6348
6349       if (!tree_view->priv->fixed_height_check)
6350         {
6351           gint height;
6352
6353           height = ROW_HEIGHT (tree_view, GTK_RBNODE_GET_HEIGHT (node));
6354           if (prev_height < 0)
6355             prev_height = height;
6356           else if (prev_height != height)
6357             fixed_height = FALSE;
6358         }
6359
6360       i++;
6361     }
6362   while (g_timer_elapsed (timer, NULL) < GTK_TREE_VIEW_TIME_MS_PER_IDLE / 1000.);
6363
6364   if (!tree_view->priv->fixed_height_check)
6365    {
6366      if (fixed_height)
6367        _gtk_rbtree_set_fixed_height (tree_view->priv->tree, prev_height, FALSE);
6368
6369      tree_view->priv->fixed_height_check = 1;
6370    }
6371
6372  done:
6373   if (validated_area)
6374     {
6375       GtkRequisition requisition;
6376       /* We temporarily guess a size, under the assumption that it will be the
6377        * same when we get our next size_allocate.  If we don't do this, we'll be
6378        * in an inconsistent state when we call top_row_to_dy. */
6379
6380       gtk_widget_size_request (GTK_WIDGET (tree_view), &requisition);
6381       tree_view->priv->hadjustment->upper = MAX (tree_view->priv->hadjustment->upper, (gfloat)requisition.width);
6382       tree_view->priv->vadjustment->upper = MAX (tree_view->priv->vadjustment->upper, (gfloat)requisition.height);
6383       gtk_adjustment_changed (tree_view->priv->hadjustment);
6384       gtk_adjustment_changed (tree_view->priv->vadjustment);
6385
6386       if (queue_resize)
6387         gtk_widget_queue_resize (GTK_WIDGET (tree_view));
6388     }
6389
6390   if (path) gtk_tree_path_free (path);
6391   g_timer_destroy (timer);
6392
6393   return retval;
6394 }
6395
6396 static gboolean
6397 validate_rows (GtkTreeView *tree_view)
6398 {
6399   gboolean retval;
6400
6401   retval = do_validate_rows (tree_view, TRUE);
6402
6403   if (! retval && tree_view->priv->validate_rows_timer)
6404     {
6405       g_source_remove (tree_view->priv->validate_rows_timer);
6406       tree_view->priv->validate_rows_timer = 0;
6407     }
6408
6409   return retval;
6410 }
6411
6412 static gboolean
6413 validate_rows_handler (GtkTreeView *tree_view)
6414 {
6415   gboolean retval;
6416
6417   retval = do_validate_rows (tree_view, TRUE);
6418   if (! retval && tree_view->priv->validate_rows_timer)
6419     {
6420       g_source_remove (tree_view->priv->validate_rows_timer);
6421       tree_view->priv->validate_rows_timer = 0;
6422     }
6423
6424   return retval;
6425 }
6426
6427 static gboolean
6428 do_presize_handler (GtkTreeView *tree_view)
6429 {
6430   if (tree_view->priv->mark_rows_col_dirty)
6431     {
6432       if (tree_view->priv->tree)
6433         _gtk_rbtree_column_invalid (tree_view->priv->tree);
6434       tree_view->priv->mark_rows_col_dirty = FALSE;
6435     }
6436   validate_visible_area (tree_view);
6437   tree_view->priv->presize_handler_timer = 0;
6438
6439   if (tree_view->priv->fixed_height_mode)
6440     {
6441       GtkRequisition requisition;
6442
6443       gtk_widget_size_request (GTK_WIDGET (tree_view), &requisition);
6444
6445       tree_view->priv->hadjustment->upper = MAX (tree_view->priv->hadjustment->upper, (gfloat)requisition.width);
6446       tree_view->priv->vadjustment->upper = MAX (tree_view->priv->vadjustment->upper, (gfloat)requisition.height);
6447       gtk_adjustment_changed (tree_view->priv->hadjustment);
6448       gtk_adjustment_changed (tree_view->priv->vadjustment);
6449       gtk_widget_queue_resize (GTK_WIDGET (tree_view));
6450     }
6451
6452   return FALSE;
6453 }
6454
6455 static gboolean
6456 presize_handler_callback (gpointer data)
6457 {
6458   do_presize_handler (GTK_TREE_VIEW (data));
6459
6460   return FALSE;
6461 }
6462
6463 static void
6464 install_presize_handler (GtkTreeView *tree_view)
6465 {
6466   if (! gtk_widget_get_realized (GTK_WIDGET (tree_view)))
6467     return;
6468
6469   if (! tree_view->priv->presize_handler_timer)
6470     {
6471       tree_view->priv->presize_handler_timer =
6472         gdk_threads_add_idle_full (GTK_PRIORITY_RESIZE - 2, presize_handler_callback, tree_view, NULL);
6473     }
6474   if (! tree_view->priv->validate_rows_timer)
6475     {
6476       tree_view->priv->validate_rows_timer =
6477         gdk_threads_add_idle_full (GTK_TREE_VIEW_PRIORITY_VALIDATE, (GSourceFunc) validate_rows_handler, tree_view, NULL);
6478     }
6479 }
6480
6481 static gboolean
6482 scroll_sync_handler (GtkTreeView *tree_view)
6483 {
6484   if (tree_view->priv->height <= tree_view->priv->vadjustment->page_size)
6485     gtk_adjustment_set_value (GTK_ADJUSTMENT (tree_view->priv->vadjustment), 0);
6486   else if (gtk_tree_row_reference_valid (tree_view->priv->top_row))
6487     gtk_tree_view_top_row_to_dy (tree_view);
6488   else
6489     gtk_tree_view_dy_to_top_row (tree_view);
6490
6491   tree_view->priv->scroll_sync_timer = 0;
6492
6493   return FALSE;
6494 }
6495
6496 static void
6497 install_scroll_sync_handler (GtkTreeView *tree_view)
6498 {
6499   if (!gtk_widget_get_realized (GTK_WIDGET (tree_view)))
6500     return;
6501
6502   if (!tree_view->priv->scroll_sync_timer)
6503     {
6504       tree_view->priv->scroll_sync_timer =
6505         gdk_threads_add_idle_full (GTK_TREE_VIEW_PRIORITY_SCROLL_SYNC, (GSourceFunc) scroll_sync_handler, tree_view, NULL);
6506     }
6507 }
6508
6509 static void
6510 gtk_tree_view_set_top_row (GtkTreeView *tree_view,
6511                            GtkTreePath *path,
6512                            gint         offset)
6513 {
6514   gtk_tree_row_reference_free (tree_view->priv->top_row);
6515
6516   if (!path)
6517     {
6518       tree_view->priv->top_row = NULL;
6519       tree_view->priv->top_row_dy = 0;
6520     }
6521   else
6522     {
6523       tree_view->priv->top_row = gtk_tree_row_reference_new_proxy (G_OBJECT (tree_view), tree_view->priv->model, path);
6524       tree_view->priv->top_row_dy = offset;
6525     }
6526 }
6527
6528 /* Always call this iff dy is in the visible range.  If the tree is empty, then
6529  * it's set to be NULL, and top_row_dy is 0;
6530  */
6531 static void
6532 gtk_tree_view_dy_to_top_row (GtkTreeView *tree_view)
6533 {
6534   gint offset;
6535   GtkTreePath *path;
6536   GtkRBTree *tree;
6537   GtkRBNode *node;
6538
6539   if (tree_view->priv->tree == NULL)
6540     {
6541       gtk_tree_view_set_top_row (tree_view, NULL, 0);
6542     }
6543   else
6544     {
6545       offset = _gtk_rbtree_find_offset (tree_view->priv->tree,
6546                                         tree_view->priv->dy,
6547                                         &tree, &node);
6548
6549       if (tree == NULL)
6550         {
6551           gtk_tree_view_set_top_row (tree_view, NULL, 0);
6552         }
6553       else
6554         {
6555           path = _gtk_tree_view_find_path (tree_view, tree, node);
6556           gtk_tree_view_set_top_row (tree_view, path, offset);
6557           gtk_tree_path_free (path);
6558         }
6559     }
6560 }
6561
6562 static void
6563 gtk_tree_view_top_row_to_dy (GtkTreeView *tree_view)
6564 {
6565   GtkTreePath *path;
6566   GtkRBTree *tree;
6567   GtkRBNode *node;
6568   int new_dy;
6569
6570   /* Avoid recursive calls */
6571   if (tree_view->priv->in_top_row_to_dy)
6572     return;
6573
6574   if (tree_view->priv->top_row)
6575     path = gtk_tree_row_reference_get_path (tree_view->priv->top_row);
6576   else
6577     path = NULL;
6578
6579   if (!path)
6580     tree = NULL;
6581   else
6582     _gtk_tree_view_find_node (tree_view, path, &tree, &node);
6583
6584   if (path)
6585     gtk_tree_path_free (path);
6586
6587   if (tree == NULL)
6588     {
6589       /* keep dy and set new toprow */
6590       gtk_tree_row_reference_free (tree_view->priv->top_row);
6591       tree_view->priv->top_row = NULL;
6592       tree_view->priv->top_row_dy = 0;
6593       /* DO NOT install the idle handler */
6594       gtk_tree_view_dy_to_top_row (tree_view);
6595       return;
6596     }
6597
6598   if (ROW_HEIGHT (tree_view, BACKGROUND_HEIGHT (node))
6599       < tree_view->priv->top_row_dy)
6600     {
6601       /* new top row -- do NOT install the idle handler */
6602       gtk_tree_view_dy_to_top_row (tree_view);
6603       return;
6604     }
6605
6606   new_dy = _gtk_rbtree_node_find_offset (tree, node);
6607   new_dy += tree_view->priv->top_row_dy;
6608
6609   if (new_dy + tree_view->priv->vadjustment->page_size > tree_view->priv->height)
6610     new_dy = tree_view->priv->height - tree_view->priv->vadjustment->page_size;
6611
6612   new_dy = MAX (0, new_dy);
6613
6614   tree_view->priv->in_top_row_to_dy = TRUE;
6615   gtk_adjustment_set_value (tree_view->priv->vadjustment, (gdouble)new_dy);
6616   tree_view->priv->in_top_row_to_dy = FALSE;
6617 }
6618
6619
6620 void
6621 _gtk_tree_view_install_mark_rows_col_dirty (GtkTreeView *tree_view)
6622 {
6623   tree_view->priv->mark_rows_col_dirty = TRUE;
6624
6625   install_presize_handler (tree_view);
6626 }
6627
6628 /*
6629  * This function works synchronously (due to the while (validate_rows...)
6630  * loop).
6631  *
6632  * There was a check for column_type != GTK_TREE_VIEW_COLUMN_AUTOSIZE
6633  * here. You now need to check that yourself.
6634  */
6635 void
6636 _gtk_tree_view_column_autosize (GtkTreeView *tree_view,
6637                                 GtkTreeViewColumn *column)
6638 {
6639   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
6640   g_return_if_fail (GTK_IS_TREE_VIEW_COLUMN (column));
6641
6642   _gtk_tree_view_column_cell_set_dirty (column, FALSE);
6643
6644   do_presize_handler (tree_view);
6645   while (validate_rows (tree_view));
6646
6647   gtk_widget_queue_resize (GTK_WIDGET (tree_view));
6648 }
6649
6650 /* Drag-and-drop */
6651
6652 static void
6653 set_source_row (GdkDragContext *context,
6654                 GtkTreeModel   *model,
6655                 GtkTreePath    *source_row)
6656 {
6657   g_object_set_data_full (G_OBJECT (context),
6658                           I_("gtk-tree-view-source-row"),
6659                           source_row ? gtk_tree_row_reference_new (model, source_row) : NULL,
6660                           (GDestroyNotify) (source_row ? gtk_tree_row_reference_free : NULL));
6661 }
6662
6663 static GtkTreePath*
6664 get_source_row (GdkDragContext *context)
6665 {
6666   GtkTreeRowReference *ref =
6667     g_object_get_data (G_OBJECT (context), "gtk-tree-view-source-row");
6668
6669   if (ref)
6670     return gtk_tree_row_reference_get_path (ref);
6671   else
6672     return NULL;
6673 }
6674
6675 typedef struct
6676 {
6677   GtkTreeRowReference *dest_row;
6678   guint                path_down_mode   : 1;
6679   guint                empty_view_drop  : 1;
6680   guint                drop_append_mode : 1;
6681 }
6682 DestRow;
6683
6684 static void
6685 dest_row_free (gpointer data)
6686 {
6687   DestRow *dr = (DestRow *)data;
6688
6689   gtk_tree_row_reference_free (dr->dest_row);
6690   g_slice_free (DestRow, dr);
6691 }
6692
6693 static void
6694 set_dest_row (GdkDragContext *context,
6695               GtkTreeModel   *model,
6696               GtkTreePath    *dest_row,
6697               gboolean        path_down_mode,
6698               gboolean        empty_view_drop,
6699               gboolean        drop_append_mode)
6700 {
6701   DestRow *dr;
6702
6703   if (!dest_row)
6704     {
6705       g_object_set_data_full (G_OBJECT (context), I_("gtk-tree-view-dest-row"),
6706                               NULL, NULL);
6707       return;
6708     }
6709
6710   dr = g_slice_new (DestRow);
6711
6712   dr->dest_row = gtk_tree_row_reference_new (model, dest_row);
6713   dr->path_down_mode = path_down_mode != FALSE;
6714   dr->empty_view_drop = empty_view_drop != FALSE;
6715   dr->drop_append_mode = drop_append_mode != FALSE;
6716
6717   g_object_set_data_full (G_OBJECT (context), I_("gtk-tree-view-dest-row"),
6718                           dr, (GDestroyNotify) dest_row_free);
6719 }
6720
6721 static GtkTreePath*
6722 get_dest_row (GdkDragContext *context,
6723               gboolean       *path_down_mode)
6724 {
6725   DestRow *dr =
6726     g_object_get_data (G_OBJECT (context), "gtk-tree-view-dest-row");
6727
6728   if (dr)
6729     {
6730       GtkTreePath *path = NULL;
6731
6732       if (path_down_mode)
6733         *path_down_mode = dr->path_down_mode;
6734
6735       if (dr->dest_row)
6736         path = gtk_tree_row_reference_get_path (dr->dest_row);
6737       else if (dr->empty_view_drop)
6738         path = gtk_tree_path_new_from_indices (0, -1);
6739       else
6740         path = NULL;
6741
6742       if (path && dr->drop_append_mode)
6743         gtk_tree_path_next (path);
6744
6745       return path;
6746     }
6747   else
6748     return NULL;
6749 }
6750
6751 /* Get/set whether drag_motion requested the drag data and
6752  * drag_data_received should thus not actually insert the data,
6753  * since the data doesn't result from a drop.
6754  */
6755 static void
6756 set_status_pending (GdkDragContext *context,
6757                     GdkDragAction   suggested_action)
6758 {
6759   g_object_set_data (G_OBJECT (context),
6760                      I_("gtk-tree-view-status-pending"),
6761                      GINT_TO_POINTER (suggested_action));
6762 }
6763
6764 static GdkDragAction
6765 get_status_pending (GdkDragContext *context)
6766 {
6767   return GPOINTER_TO_INT (g_object_get_data (G_OBJECT (context),
6768                                              "gtk-tree-view-status-pending"));
6769 }
6770
6771 static TreeViewDragInfo*
6772 get_info (GtkTreeView *tree_view)
6773 {
6774   return g_object_get_data (G_OBJECT (tree_view), "gtk-tree-view-drag-info");
6775 }
6776
6777 static void
6778 destroy_info (TreeViewDragInfo *di)
6779 {
6780   g_slice_free (TreeViewDragInfo, di);
6781 }
6782
6783 static TreeViewDragInfo*
6784 ensure_info (GtkTreeView *tree_view)
6785 {
6786   TreeViewDragInfo *di;
6787
6788   di = get_info (tree_view);
6789
6790   if (di == NULL)
6791     {
6792       di = g_slice_new0 (TreeViewDragInfo);
6793
6794       g_object_set_data_full (G_OBJECT (tree_view),
6795                               I_("gtk-tree-view-drag-info"),
6796                               di,
6797                               (GDestroyNotify) destroy_info);
6798     }
6799
6800   return di;
6801 }
6802
6803 static void
6804 remove_info (GtkTreeView *tree_view)
6805 {
6806   g_object_set_data (G_OBJECT (tree_view), I_("gtk-tree-view-drag-info"), NULL);
6807 }
6808
6809 #if 0
6810 static gint
6811 drag_scan_timeout (gpointer data)
6812 {
6813   GtkTreeView *tree_view;
6814   gint x, y;
6815   GdkModifierType state;
6816   GtkTreePath *path = NULL;
6817   GtkTreeViewColumn *column = NULL;
6818   GdkRectangle visible_rect;
6819
6820   GDK_THREADS_ENTER ();
6821
6822   tree_view = GTK_TREE_VIEW (data);
6823
6824   gdk_window_get_pointer (tree_view->priv->bin_window,
6825                           &x, &y, &state);
6826
6827   gtk_tree_view_get_visible_rect (tree_view, &visible_rect);
6828
6829   /* See if we are near the edge. */
6830   if ((x - visible_rect.x) < SCROLL_EDGE_SIZE ||
6831       (visible_rect.x + visible_rect.width - x) < SCROLL_EDGE_SIZE ||
6832       (y - visible_rect.y) < SCROLL_EDGE_SIZE ||
6833       (visible_rect.y + visible_rect.height - y) < SCROLL_EDGE_SIZE)
6834     {
6835       gtk_tree_view_get_path_at_pos (tree_view,
6836                                      tree_view->priv->bin_window,
6837                                      x, y,
6838                                      &path,
6839                                      &column,
6840                                      NULL,
6841                                      NULL);
6842
6843       if (path != NULL)
6844         {
6845           gtk_tree_view_scroll_to_cell (tree_view,
6846                                         path,
6847                                         column,
6848                                         TRUE,
6849                                         0.5, 0.5);
6850
6851           gtk_tree_path_free (path);
6852         }
6853     }
6854
6855   GDK_THREADS_LEAVE ();
6856
6857   return TRUE;
6858 }
6859 #endif /* 0 */
6860
6861 static void
6862 add_scroll_timeout (GtkTreeView *tree_view)
6863 {
6864   if (tree_view->priv->scroll_timeout == 0)
6865     {
6866       tree_view->priv->scroll_timeout =
6867         gdk_threads_add_timeout (150, scroll_row_timeout, tree_view);
6868     }
6869 }
6870
6871 static void
6872 remove_scroll_timeout (GtkTreeView *tree_view)
6873 {
6874   if (tree_view->priv->scroll_timeout != 0)
6875     {
6876       g_source_remove (tree_view->priv->scroll_timeout);
6877       tree_view->priv->scroll_timeout = 0;
6878     }
6879 }
6880
6881 static gboolean
6882 check_model_dnd (GtkTreeModel *model,
6883                  GType         required_iface,
6884                  const gchar  *signal)
6885 {
6886   if (model == NULL || !G_TYPE_CHECK_INSTANCE_TYPE ((model), required_iface))
6887     {
6888       g_warning ("You must override the default '%s' handler "
6889                  "on GtkTreeView when using models that don't support "
6890                  "the %s interface and enabling drag-and-drop. The simplest way to do this "
6891                  "is to connect to '%s' and call "
6892                  "g_signal_stop_emission_by_name() in your signal handler to prevent "
6893                  "the default handler from running. Look at the source code "
6894                  "for the default handler in gtktreeview.c to get an idea what "
6895                  "your handler should do. (gtktreeview.c is in the GTK source "
6896                  "code.) If you're using GTK from a language other than C, "
6897                  "there may be a more natural way to override default handlers, e.g. via derivation.",
6898                  signal, g_type_name (required_iface), signal);
6899       return FALSE;
6900     }
6901   else
6902     return TRUE;
6903 }
6904
6905 static void
6906 remove_open_timeout (GtkTreeView *tree_view)
6907 {
6908   if (tree_view->priv->open_dest_timeout != 0)
6909     {
6910       g_source_remove (tree_view->priv->open_dest_timeout);
6911       tree_view->priv->open_dest_timeout = 0;
6912     }
6913 }
6914
6915
6916 static gint
6917 open_row_timeout (gpointer data)
6918 {
6919   GtkTreeView *tree_view = data;
6920   GtkTreePath *dest_path = NULL;
6921   GtkTreeViewDropPosition pos;
6922   gboolean result = FALSE;
6923
6924   gtk_tree_view_get_drag_dest_row (tree_view,
6925                                    &dest_path,
6926                                    &pos);
6927
6928   if (dest_path &&
6929       (pos == GTK_TREE_VIEW_DROP_INTO_OR_AFTER ||
6930        pos == GTK_TREE_VIEW_DROP_INTO_OR_BEFORE))
6931     {
6932       gtk_tree_view_expand_row (tree_view, dest_path, FALSE);
6933       tree_view->priv->open_dest_timeout = 0;
6934
6935       gtk_tree_path_free (dest_path);
6936     }
6937   else
6938     {
6939       if (dest_path)
6940         gtk_tree_path_free (dest_path);
6941
6942       result = TRUE;
6943     }
6944
6945   return result;
6946 }
6947
6948 static gboolean
6949 scroll_row_timeout (gpointer data)
6950 {
6951   GtkTreeView *tree_view = data;
6952
6953   gtk_tree_view_vertical_autoscroll (tree_view);
6954
6955   if (tree_view->priv->rubber_band_status == RUBBER_BAND_ACTIVE)
6956     gtk_tree_view_update_rubber_band (tree_view);
6957
6958   return TRUE;
6959 }
6960
6961 /* Returns TRUE if event should not be propagated to parent widgets */
6962 static gboolean
6963 set_destination_row (GtkTreeView    *tree_view,
6964                      GdkDragContext *context,
6965                      /* coordinates relative to the widget */
6966                      gint            x,
6967                      gint            y,
6968                      GdkDragAction  *suggested_action,
6969                      GdkAtom        *target)
6970 {
6971   GtkTreePath *path = NULL;
6972   GtkTreeViewDropPosition pos;
6973   GtkTreeViewDropPosition old_pos;
6974   TreeViewDragInfo *di;
6975   GtkWidget *widget;
6976   GtkTreePath *old_dest_path = NULL;
6977   gboolean can_drop = FALSE;
6978
6979   *suggested_action = 0;
6980   *target = GDK_NONE;
6981
6982   widget = GTK_WIDGET (tree_view);
6983
6984   di = get_info (tree_view);
6985
6986   if (di == NULL || y - TREE_VIEW_HEADER_HEIGHT (tree_view) < 0)
6987     {
6988       /* someone unset us as a drag dest, note that if
6989        * we return FALSE drag_leave isn't called
6990        */
6991
6992       gtk_tree_view_set_drag_dest_row (tree_view,
6993                                        NULL,
6994                                        GTK_TREE_VIEW_DROP_BEFORE);
6995
6996       remove_scroll_timeout (GTK_TREE_VIEW (widget));
6997       remove_open_timeout (GTK_TREE_VIEW (widget));
6998
6999       return FALSE; /* no longer a drop site */
7000     }
7001
7002   *target = gtk_drag_dest_find_target (widget, context,
7003                                        gtk_drag_dest_get_target_list (widget));
7004   if (*target == GDK_NONE)
7005     {
7006       return FALSE;
7007     }
7008
7009   if (!gtk_tree_view_get_dest_row_at_pos (tree_view,
7010                                           x, y,
7011                                           &path,
7012                                           &pos))
7013     {
7014       gint n_children;
7015       GtkTreeModel *model;
7016
7017       remove_open_timeout (tree_view);
7018
7019       /* the row got dropped on empty space, let's setup a special case
7020        */
7021
7022       if (path)
7023         gtk_tree_path_free (path);
7024
7025       model = gtk_tree_view_get_model (tree_view);
7026
7027       n_children = gtk_tree_model_iter_n_children (model, NULL);
7028       if (n_children)
7029         {
7030           pos = GTK_TREE_VIEW_DROP_AFTER;
7031           path = gtk_tree_path_new_from_indices (n_children - 1, -1);
7032         }
7033       else
7034         {
7035           pos = GTK_TREE_VIEW_DROP_BEFORE;
7036           path = gtk_tree_path_new_from_indices (0, -1);
7037         }
7038
7039       can_drop = TRUE;
7040
7041       goto out;
7042     }
7043
7044   g_assert (path);
7045
7046   /* If we left the current row's "open" zone, unset the timeout for
7047    * opening the row
7048    */
7049   gtk_tree_view_get_drag_dest_row (tree_view,
7050                                    &old_dest_path,
7051                                    &old_pos);
7052
7053   if (old_dest_path &&
7054       (gtk_tree_path_compare (path, old_dest_path) != 0 ||
7055        !(pos == GTK_TREE_VIEW_DROP_INTO_OR_AFTER ||
7056          pos == GTK_TREE_VIEW_DROP_INTO_OR_BEFORE)))
7057     remove_open_timeout (tree_view);
7058
7059   if (old_dest_path)
7060     gtk_tree_path_free (old_dest_path);
7061
7062   if (TRUE /* FIXME if the location droppable predicate */)
7063     {
7064       can_drop = TRUE;
7065     }
7066
7067 out:
7068   if (can_drop)
7069     {
7070       GtkWidget *source_widget;
7071
7072       *suggested_action = context->suggested_action;
7073       source_widget = gtk_drag_get_source_widget (context);
7074
7075       if (source_widget == widget)
7076         {
7077           /* Default to MOVE, unless the user has
7078            * pressed ctrl or shift to affect available actions
7079            */
7080           if ((context->actions & GDK_ACTION_MOVE) != 0)
7081             *suggested_action = GDK_ACTION_MOVE;
7082         }
7083
7084       gtk_tree_view_set_drag_dest_row (GTK_TREE_VIEW (widget),
7085                                        path, pos);
7086     }
7087   else
7088     {
7089       /* can't drop here */
7090       remove_open_timeout (tree_view);
7091
7092       gtk_tree_view_set_drag_dest_row (GTK_TREE_VIEW (widget),
7093                                        NULL,
7094                                        GTK_TREE_VIEW_DROP_BEFORE);
7095     }
7096
7097   if (path)
7098     gtk_tree_path_free (path);
7099
7100   return TRUE;
7101 }
7102
7103 static GtkTreePath*
7104 get_logical_dest_row (GtkTreeView *tree_view,
7105                       gboolean    *path_down_mode,
7106                       gboolean    *drop_append_mode)
7107 {
7108   /* adjust path to point to the row the drop goes in front of */
7109   GtkTreePath *path = NULL;
7110   GtkTreeViewDropPosition pos;
7111
7112   g_return_val_if_fail (path_down_mode != NULL, NULL);
7113   g_return_val_if_fail (drop_append_mode != NULL, NULL);
7114
7115   *path_down_mode = FALSE;
7116   *drop_append_mode = 0;
7117
7118   gtk_tree_view_get_drag_dest_row (tree_view, &path, &pos);
7119
7120   if (path == NULL)
7121     return NULL;
7122
7123   if (pos == GTK_TREE_VIEW_DROP_BEFORE)
7124     ; /* do nothing */
7125   else if (pos == GTK_TREE_VIEW_DROP_INTO_OR_BEFORE ||
7126            pos == GTK_TREE_VIEW_DROP_INTO_OR_AFTER)
7127     *path_down_mode = TRUE;
7128   else
7129     {
7130       GtkTreeIter iter;
7131       GtkTreeModel *model = gtk_tree_view_get_model (tree_view);
7132
7133       g_assert (pos == GTK_TREE_VIEW_DROP_AFTER);
7134
7135       if (!gtk_tree_model_get_iter (model, &iter, path) ||
7136           !gtk_tree_model_iter_next (model, &iter))
7137         *drop_append_mode = 1;
7138       else
7139         {
7140           *drop_append_mode = 0;
7141           gtk_tree_path_next (path);
7142         }
7143     }
7144
7145   return path;
7146 }
7147
7148 static gboolean
7149 gtk_tree_view_maybe_begin_dragging_row (GtkTreeView      *tree_view,
7150                                         GdkEventMotion   *event)
7151 {
7152   GtkWidget *widget = GTK_WIDGET (tree_view);
7153   GdkDragContext *context;
7154   TreeViewDragInfo *di;
7155   GtkTreePath *path = NULL;
7156   gint button;
7157   gint cell_x, cell_y;
7158   GtkTreeModel *model;
7159   gboolean retval = FALSE;
7160
7161   di = get_info (tree_view);
7162
7163   if (di == NULL || !di->source_set)
7164     goto out;
7165
7166   if (tree_view->priv->pressed_button < 0)
7167     goto out;
7168
7169   if (!gtk_drag_check_threshold (widget,
7170                                  tree_view->priv->press_start_x,
7171                                  tree_view->priv->press_start_y,
7172                                  event->x, event->y))
7173     goto out;
7174
7175   model = gtk_tree_view_get_model (tree_view);
7176
7177   if (model == NULL)
7178     goto out;
7179
7180   button = tree_view->priv->pressed_button;
7181   tree_view->priv->pressed_button = -1;
7182
7183   gtk_tree_view_get_path_at_pos (tree_view,
7184                                  tree_view->priv->press_start_x,
7185                                  tree_view->priv->press_start_y,
7186                                  &path,
7187                                  NULL,
7188                                  &cell_x,
7189                                  &cell_y);
7190
7191   if (path == NULL)
7192     goto out;
7193
7194   if (!GTK_IS_TREE_DRAG_SOURCE (model) ||
7195       !gtk_tree_drag_source_row_draggable (GTK_TREE_DRAG_SOURCE (model),
7196                                            path))
7197     goto out;
7198
7199   if (!(GDK_BUTTON1_MASK << (button - 1) & di->start_button_mask))
7200     goto out;
7201
7202   /* Now we can begin the drag */
7203
7204   retval = TRUE;
7205
7206   context = gtk_drag_begin (widget,
7207                             gtk_drag_source_get_target_list (widget),
7208                             di->source_actions,
7209                             button,
7210                             (GdkEvent*)event);
7211
7212   set_source_row (context, model, path);
7213
7214  out:
7215   if (path)
7216     gtk_tree_path_free (path);
7217
7218   return retval;
7219 }
7220
7221
7222 static void
7223 gtk_tree_view_drag_begin (GtkWidget      *widget,
7224                           GdkDragContext *context)
7225 {
7226   GtkTreeView *tree_view;
7227   GtkTreePath *path = NULL;
7228   gint cell_x, cell_y;
7229   GdkPixmap *row_pix;
7230   TreeViewDragInfo *di;
7231
7232   tree_view = GTK_TREE_VIEW (widget);
7233
7234   /* if the user uses a custom DND source impl, we don't set the icon here */
7235   di = get_info (tree_view);
7236
7237   if (di == NULL || !di->source_set)
7238     return;
7239
7240   gtk_tree_view_get_path_at_pos (tree_view,
7241                                  tree_view->priv->press_start_x,
7242                                  tree_view->priv->press_start_y,
7243                                  &path,
7244                                  NULL,
7245                                  &cell_x,
7246                                  &cell_y);
7247
7248   g_return_if_fail (path != NULL);
7249
7250   row_pix = gtk_tree_view_create_row_drag_icon (tree_view,
7251                                                 path);
7252
7253   gtk_drag_set_icon_pixmap (context,
7254                             gdk_drawable_get_colormap (row_pix),
7255                             row_pix,
7256                             NULL,
7257                             /* the + 1 is for the black border in the icon */
7258                             tree_view->priv->press_start_x + 1,
7259                             cell_y + 1);
7260
7261   g_object_unref (row_pix);
7262   gtk_tree_path_free (path);
7263 }
7264
7265 static void
7266 gtk_tree_view_drag_end (GtkWidget      *widget,
7267                         GdkDragContext *context)
7268 {
7269   /* do nothing */
7270 }
7271
7272 /* Default signal implementations for the drag signals */
7273 static void
7274 gtk_tree_view_drag_data_get (GtkWidget        *widget,
7275                              GdkDragContext   *context,
7276                              GtkSelectionData *selection_data,
7277                              guint             info,
7278                              guint             time)
7279 {
7280   GtkTreeView *tree_view;
7281   GtkTreeModel *model;
7282   TreeViewDragInfo *di;
7283   GtkTreePath *source_row;
7284
7285   tree_view = GTK_TREE_VIEW (widget);
7286
7287   model = gtk_tree_view_get_model (tree_view);
7288
7289   if (model == NULL)
7290     return;
7291
7292   di = get_info (GTK_TREE_VIEW (widget));
7293
7294   if (di == NULL)
7295     return;
7296
7297   source_row = get_source_row (context);
7298
7299   if (source_row == NULL)
7300     return;
7301
7302   /* We can implement the GTK_TREE_MODEL_ROW target generically for
7303    * any model; for DragSource models there are some other targets
7304    * we also support.
7305    */
7306
7307   if (GTK_IS_TREE_DRAG_SOURCE (model) &&
7308       gtk_tree_drag_source_drag_data_get (GTK_TREE_DRAG_SOURCE (model),
7309                                           source_row,
7310                                           selection_data))
7311     goto done;
7312
7313   /* If drag_data_get does nothing, try providing row data. */
7314   if (selection_data->target == gdk_atom_intern_static_string ("GTK_TREE_MODEL_ROW"))
7315     {
7316       gtk_tree_set_row_drag_data (selection_data,
7317                                   model,
7318                                   source_row);
7319     }
7320
7321  done:
7322   gtk_tree_path_free (source_row);
7323 }
7324
7325
7326 static void
7327 gtk_tree_view_drag_data_delete (GtkWidget      *widget,
7328                                 GdkDragContext *context)
7329 {
7330   TreeViewDragInfo *di;
7331   GtkTreeModel *model;
7332   GtkTreeView *tree_view;
7333   GtkTreePath *source_row;
7334
7335   tree_view = GTK_TREE_VIEW (widget);
7336   model = gtk_tree_view_get_model (tree_view);
7337
7338   if (!check_model_dnd (model, GTK_TYPE_TREE_DRAG_SOURCE, "drag_data_delete"))
7339     return;
7340
7341   di = get_info (tree_view);
7342
7343   if (di == NULL)
7344     return;
7345
7346   source_row = get_source_row (context);
7347
7348   if (source_row == NULL)
7349     return;
7350
7351   gtk_tree_drag_source_drag_data_delete (GTK_TREE_DRAG_SOURCE (model),
7352                                          source_row);
7353
7354   gtk_tree_path_free (source_row);
7355
7356   set_source_row (context, NULL, NULL);
7357 }
7358
7359 static void
7360 gtk_tree_view_drag_leave (GtkWidget      *widget,
7361                           GdkDragContext *context,
7362                           guint             time)
7363 {
7364   /* unset any highlight row */
7365   gtk_tree_view_set_drag_dest_row (GTK_TREE_VIEW (widget),
7366                                    NULL,
7367                                    GTK_TREE_VIEW_DROP_BEFORE);
7368
7369   remove_scroll_timeout (GTK_TREE_VIEW (widget));
7370   remove_open_timeout (GTK_TREE_VIEW (widget));
7371 }
7372
7373
7374 static gboolean
7375 gtk_tree_view_drag_motion (GtkWidget        *widget,
7376                            GdkDragContext   *context,
7377                            /* coordinates relative to the widget */
7378                            gint              x,
7379                            gint              y,
7380                            guint             time)
7381 {
7382   gboolean empty;
7383   GtkTreePath *path = NULL;
7384   GtkTreeViewDropPosition pos;
7385   GtkTreeView *tree_view;
7386   GdkDragAction suggested_action = 0;
7387   GdkAtom target;
7388
7389   tree_view = GTK_TREE_VIEW (widget);
7390
7391   if (!set_destination_row (tree_view, context, x, y, &suggested_action, &target))
7392     return FALSE;
7393
7394   gtk_tree_view_get_drag_dest_row (tree_view, &path, &pos);
7395
7396   /* we only know this *after* set_desination_row */
7397   empty = tree_view->priv->empty_view_drop;
7398
7399   if (path == NULL && !empty)
7400     {
7401       /* Can't drop here. */
7402       gdk_drag_status (context, 0, time);
7403     }
7404   else
7405     {
7406       if (tree_view->priv->open_dest_timeout == 0 &&
7407           (pos == GTK_TREE_VIEW_DROP_INTO_OR_AFTER ||
7408            pos == GTK_TREE_VIEW_DROP_INTO_OR_BEFORE))
7409         {
7410           tree_view->priv->open_dest_timeout =
7411             gdk_threads_add_timeout (AUTO_EXPAND_TIMEOUT, open_row_timeout, tree_view);
7412         }
7413       else
7414         {
7415           add_scroll_timeout (tree_view);
7416         }
7417
7418       if (target == gdk_atom_intern_static_string ("GTK_TREE_MODEL_ROW"))
7419         {
7420           /* Request data so we can use the source row when
7421            * determining whether to accept the drop
7422            */
7423           set_status_pending (context, suggested_action);
7424           gtk_drag_get_data (widget, context, target, time);
7425         }
7426       else
7427         {
7428           set_status_pending (context, 0);
7429           gdk_drag_status (context, suggested_action, time);
7430         }
7431     }
7432
7433   if (path)
7434     gtk_tree_path_free (path);
7435
7436   return TRUE;
7437 }
7438
7439
7440 static gboolean
7441 gtk_tree_view_drag_drop (GtkWidget        *widget,
7442                          GdkDragContext   *context,
7443                          /* coordinates relative to the widget */
7444                          gint              x,
7445                          gint              y,
7446                          guint             time)
7447 {
7448   GtkTreeView *tree_view;
7449   GtkTreePath *path;
7450   GdkDragAction suggested_action = 0;
7451   GdkAtom target = GDK_NONE;
7452   TreeViewDragInfo *di;
7453   GtkTreeModel *model;
7454   gboolean path_down_mode;
7455   gboolean drop_append_mode;
7456
7457   tree_view = GTK_TREE_VIEW (widget);
7458
7459   model = gtk_tree_view_get_model (tree_view);
7460
7461   remove_scroll_timeout (GTK_TREE_VIEW (widget));
7462   remove_open_timeout (GTK_TREE_VIEW (widget));
7463
7464   di = get_info (tree_view);
7465
7466   if (di == NULL)
7467     return FALSE;
7468
7469   if (!check_model_dnd (model, GTK_TYPE_TREE_DRAG_DEST, "drag_drop"))
7470     return FALSE;
7471
7472   if (!set_destination_row (tree_view, context, x, y, &suggested_action, &target))
7473     return FALSE;
7474
7475   path = get_logical_dest_row (tree_view, &path_down_mode, &drop_append_mode);
7476
7477   if (target != GDK_NONE && path != NULL)
7478     {
7479       /* in case a motion had requested drag data, change things so we
7480        * treat drag data receives as a drop.
7481        */
7482       set_status_pending (context, 0);
7483       set_dest_row (context, model, path,
7484                     path_down_mode, tree_view->priv->empty_view_drop,
7485                     drop_append_mode);
7486     }
7487
7488   if (path)
7489     gtk_tree_path_free (path);
7490
7491   /* Unset this thing */
7492   gtk_tree_view_set_drag_dest_row (GTK_TREE_VIEW (widget),
7493                                    NULL,
7494                                    GTK_TREE_VIEW_DROP_BEFORE);
7495
7496   if (target != GDK_NONE)
7497     {
7498       gtk_drag_get_data (widget, context, target, time);
7499       return TRUE;
7500     }
7501   else
7502     return FALSE;
7503 }
7504
7505 static void
7506 gtk_tree_view_drag_data_received (GtkWidget        *widget,
7507                                   GdkDragContext   *context,
7508                                   /* coordinates relative to the widget */
7509                                   gint              x,
7510                                   gint              y,
7511                                   GtkSelectionData *selection_data,
7512                                   guint             info,
7513                                   guint             time)
7514 {
7515   GtkTreePath *path;
7516   TreeViewDragInfo *di;
7517   gboolean accepted = FALSE;
7518   GtkTreeModel *model;
7519   GtkTreeView *tree_view;
7520   GtkTreePath *dest_row;
7521   GdkDragAction suggested_action;
7522   gboolean path_down_mode;
7523   gboolean drop_append_mode;
7524
7525   tree_view = GTK_TREE_VIEW (widget);
7526
7527   model = gtk_tree_view_get_model (tree_view);
7528
7529   if (!check_model_dnd (model, GTK_TYPE_TREE_DRAG_DEST, "drag_data_received"))
7530     return;
7531
7532   di = get_info (tree_view);
7533
7534   if (di == NULL)
7535     return;
7536
7537   suggested_action = get_status_pending (context);
7538
7539   if (suggested_action)
7540     {
7541       /* We are getting this data due to a request in drag_motion,
7542        * rather than due to a request in drag_drop, so we are just
7543        * supposed to call drag_status, not actually paste in the
7544        * data.
7545        */
7546       path = get_logical_dest_row (tree_view, &path_down_mode,
7547                                    &drop_append_mode);
7548
7549       if (path == NULL)
7550         suggested_action = 0;
7551       else if (path_down_mode)
7552         gtk_tree_path_down (path);
7553
7554       if (suggested_action)
7555         {
7556           if (!gtk_tree_drag_dest_row_drop_possible (GTK_TREE_DRAG_DEST (model),
7557                                                      path,
7558                                                      selection_data))
7559             {
7560               if (path_down_mode)
7561                 {
7562                   path_down_mode = FALSE;
7563                   gtk_tree_path_up (path);
7564
7565                   if (!gtk_tree_drag_dest_row_drop_possible (GTK_TREE_DRAG_DEST (model),
7566                                                              path,
7567                                                              selection_data))
7568                     suggested_action = 0;
7569                 }
7570               else
7571                 suggested_action = 0;
7572             }
7573         }
7574
7575       gdk_drag_status (context, suggested_action, time);
7576
7577       if (path)
7578         gtk_tree_path_free (path);
7579
7580       /* If you can't drop, remove user drop indicator until the next motion */
7581       if (suggested_action == 0)
7582         gtk_tree_view_set_drag_dest_row (GTK_TREE_VIEW (widget),
7583                                          NULL,
7584                                          GTK_TREE_VIEW_DROP_BEFORE);
7585
7586       return;
7587     }
7588
7589   dest_row = get_dest_row (context, &path_down_mode);
7590
7591   if (dest_row == NULL)
7592     return;
7593
7594   if (selection_data->length >= 0)
7595     {
7596       if (path_down_mode)
7597         {
7598           gtk_tree_path_down (dest_row);
7599           if (!gtk_tree_drag_dest_row_drop_possible (GTK_TREE_DRAG_DEST (model),
7600                                                      dest_row, selection_data))
7601             gtk_tree_path_up (dest_row);
7602         }
7603     }
7604
7605   if (selection_data->length >= 0)
7606     {
7607       if (gtk_tree_drag_dest_drag_data_received (GTK_TREE_DRAG_DEST (model),
7608                                                  dest_row,
7609                                                  selection_data))
7610         accepted = TRUE;
7611     }
7612
7613   gtk_drag_finish (context,
7614                    accepted,
7615                    (context->action == GDK_ACTION_MOVE),
7616                    time);
7617
7618   if (gtk_tree_path_get_depth (dest_row) == 1
7619       && gtk_tree_path_get_indices (dest_row)[0] == 0)
7620     {
7621       /* special special case drag to "0", scroll to first item */
7622       if (!tree_view->priv->scroll_to_path)
7623         gtk_tree_view_scroll_to_cell (tree_view, dest_row, NULL, FALSE, 0.0, 0.0);
7624     }
7625
7626   gtk_tree_path_free (dest_row);
7627
7628   /* drop dest_row */
7629   set_dest_row (context, NULL, NULL, FALSE, FALSE, FALSE);
7630 }
7631
7632
7633
7634 /* GtkContainer Methods
7635  */
7636
7637
7638 static void
7639 gtk_tree_view_remove (GtkContainer *container,
7640                       GtkWidget    *widget)
7641 {
7642   GtkTreeView *tree_view = GTK_TREE_VIEW (container);
7643   GtkTreeViewChild *child = NULL;
7644   GList *tmp_list;
7645
7646   tmp_list = tree_view->priv->children;
7647   while (tmp_list)
7648     {
7649       child = tmp_list->data;
7650       if (child->widget == widget)
7651         {
7652           gtk_widget_unparent (widget);
7653
7654           tree_view->priv->children = g_list_remove_link (tree_view->priv->children, tmp_list);
7655           g_list_free_1 (tmp_list);
7656           g_slice_free (GtkTreeViewChild, child);
7657           return;
7658         }
7659
7660       tmp_list = tmp_list->next;
7661     }
7662
7663   tmp_list = tree_view->priv->columns;
7664
7665   while (tmp_list)
7666     {
7667       GtkTreeViewColumn *column;
7668       column = tmp_list->data;
7669       if (column->button == widget)
7670         {
7671           gtk_widget_unparent (widget);
7672           return;
7673         }
7674       tmp_list = tmp_list->next;
7675     }
7676 }
7677
7678 static void
7679 gtk_tree_view_forall (GtkContainer *container,
7680                       gboolean      include_internals,
7681                       GtkCallback   callback,
7682                       gpointer      callback_data)
7683 {
7684   GtkTreeView *tree_view = GTK_TREE_VIEW (container);
7685   GtkTreeViewChild *child = NULL;
7686   GtkTreeViewColumn *column;
7687   GList *tmp_list;
7688
7689   tmp_list = tree_view->priv->children;
7690   while (tmp_list)
7691     {
7692       child = tmp_list->data;
7693       tmp_list = tmp_list->next;
7694
7695       (* callback) (child->widget, callback_data);
7696     }
7697   if (include_internals == FALSE)
7698     return;
7699
7700   for (tmp_list = tree_view->priv->columns; tmp_list; tmp_list = tmp_list->next)
7701     {
7702       column = tmp_list->data;
7703
7704       if (column->button)
7705         (* callback) (column->button, callback_data);
7706     }
7707 }
7708
7709 /* Returns TRUE if the treeview contains no "special" (editable or activatable)
7710  * cells. If so we draw one big row-spanning focus rectangle.
7711  */
7712 static gboolean
7713 gtk_tree_view_has_special_cell (GtkTreeView *tree_view)
7714 {
7715   GList *list;
7716
7717   for (list = tree_view->priv->columns; list; list = list->next)
7718     {
7719       if (!((GtkTreeViewColumn *)list->data)->visible)
7720         continue;
7721       if (_gtk_tree_view_column_count_special_cells (list->data))
7722         return TRUE;
7723     }
7724
7725   return FALSE;
7726 }
7727
7728 static void
7729 column_sizing_notify (GObject    *object,
7730                       GParamSpec *pspec,
7731                       gpointer    data)
7732 {
7733   GtkTreeViewColumn *c = GTK_TREE_VIEW_COLUMN (object);
7734
7735   if (gtk_tree_view_column_get_sizing (c) != GTK_TREE_VIEW_COLUMN_FIXED)
7736     /* disable fixed height mode */
7737     g_object_set (data, "fixed-height-mode", FALSE, NULL);
7738 }
7739
7740 /**
7741  * gtk_tree_view_set_fixed_height_mode:
7742  * @tree_view: a #GtkTreeView
7743  * @enable: %TRUE to enable fixed height mode
7744  *
7745  * Enables or disables the fixed height mode of @tree_view.
7746  * Fixed height mode speeds up #GtkTreeView by assuming that all
7747  * rows have the same height.
7748  * Only enable this option if all rows are the same height and all
7749  * columns are of type %GTK_TREE_VIEW_COLUMN_FIXED.
7750  *
7751  * Since: 2.6
7752  **/
7753 void
7754 gtk_tree_view_set_fixed_height_mode (GtkTreeView *tree_view,
7755                                      gboolean     enable)
7756 {
7757   GList *l;
7758
7759   enable = enable != FALSE;
7760
7761   if (enable == tree_view->priv->fixed_height_mode)
7762     return;
7763
7764   if (!enable)
7765     {
7766       tree_view->priv->fixed_height_mode = 0;
7767       tree_view->priv->fixed_height = -1;
7768
7769       /* force a revalidation */
7770       install_presize_handler (tree_view);
7771     }
7772   else
7773     {
7774       /* make sure all columns are of type FIXED */
7775       for (l = tree_view->priv->columns; l; l = l->next)
7776         {
7777           GtkTreeViewColumn *c = l->data;
7778
7779           g_return_if_fail (gtk_tree_view_column_get_sizing (c) == GTK_TREE_VIEW_COLUMN_FIXED);
7780         }
7781
7782       /* yes, we really have to do this is in a separate loop */
7783       for (l = tree_view->priv->columns; l; l = l->next)
7784         g_signal_connect (l->data, "notify::sizing",
7785                           G_CALLBACK (column_sizing_notify), tree_view);
7786
7787       tree_view->priv->fixed_height_mode = 1;
7788       tree_view->priv->fixed_height = -1;
7789
7790       if (tree_view->priv->tree)
7791         initialize_fixed_height_mode (tree_view);
7792     }
7793
7794   g_object_notify (G_OBJECT (tree_view), "fixed-height-mode");
7795 }
7796
7797 /**
7798  * gtk_tree_view_get_fixed_height_mode:
7799  * @tree_view: a #GtkTreeView
7800  *
7801  * Returns whether fixed height mode is turned on for @tree_view.
7802  *
7803  * Return value: %TRUE if @tree_view is in fixed height mode
7804  *
7805  * Since: 2.6
7806  **/
7807 gboolean
7808 gtk_tree_view_get_fixed_height_mode (GtkTreeView *tree_view)
7809 {
7810   return tree_view->priv->fixed_height_mode;
7811 }
7812
7813 /* Returns TRUE if the focus is within the headers, after the focus operation is
7814  * done
7815  */
7816 static gboolean
7817 gtk_tree_view_header_focus (GtkTreeView      *tree_view,
7818                             GtkDirectionType  dir,
7819                             gboolean          clamp_column_visible)
7820 {
7821   GtkWidget *focus_child;
7822
7823   GList *last_column, *first_column;
7824   GList *tmp_list;
7825   gboolean rtl;
7826
7827   if (! GTK_TREE_VIEW_FLAG_SET (tree_view, GTK_TREE_VIEW_HEADERS_VISIBLE))
7828     return FALSE;
7829
7830   focus_child = gtk_container_get_focus_child (GTK_CONTAINER (tree_view));
7831
7832   first_column = tree_view->priv->columns;
7833   while (first_column)
7834     {
7835       if (gtk_widget_get_can_focus (GTK_TREE_VIEW_COLUMN (first_column->data)->button) &&
7836           GTK_TREE_VIEW_COLUMN (first_column->data)->visible &&
7837           (GTK_TREE_VIEW_COLUMN (first_column->data)->clickable ||
7838            GTK_TREE_VIEW_COLUMN (first_column->data)->reorderable))
7839         break;
7840       first_column = first_column->next;
7841     }
7842
7843   /* No headers are visible, or are focusable.  We can't focus in or out.
7844    */
7845   if (first_column == NULL)
7846     return FALSE;
7847
7848   last_column = g_list_last (tree_view->priv->columns);
7849   while (last_column)
7850     {
7851       if (gtk_widget_get_can_focus (GTK_TREE_VIEW_COLUMN (last_column->data)->button) &&
7852           GTK_TREE_VIEW_COLUMN (last_column->data)->visible &&
7853           (GTK_TREE_VIEW_COLUMN (last_column->data)->clickable ||
7854            GTK_TREE_VIEW_COLUMN (last_column->data)->reorderable))
7855         break;
7856       last_column = last_column->prev;
7857     }
7858
7859
7860   rtl = (gtk_widget_get_direction (GTK_WIDGET (tree_view)) == GTK_TEXT_DIR_RTL);
7861
7862   switch (dir)
7863     {
7864     case GTK_DIR_TAB_BACKWARD:
7865     case GTK_DIR_TAB_FORWARD:
7866     case GTK_DIR_UP:
7867     case GTK_DIR_DOWN:
7868       if (focus_child == NULL)
7869         {
7870           if (tree_view->priv->focus_column != NULL &&
7871               gtk_widget_get_can_focus (tree_view->priv->focus_column->button))
7872             focus_child = tree_view->priv->focus_column->button;
7873           else
7874             focus_child = GTK_TREE_VIEW_COLUMN (first_column->data)->button;
7875           gtk_widget_grab_focus (focus_child);
7876           break;
7877         }
7878       return FALSE;
7879
7880     case GTK_DIR_LEFT:
7881     case GTK_DIR_RIGHT:
7882       if (focus_child == NULL)
7883         {
7884           if (tree_view->priv->focus_column != NULL)
7885             focus_child = tree_view->priv->focus_column->button;
7886           else if (dir == GTK_DIR_LEFT)
7887             focus_child = GTK_TREE_VIEW_COLUMN (last_column->data)->button;
7888           else
7889             focus_child = GTK_TREE_VIEW_COLUMN (first_column->data)->button;
7890           gtk_widget_grab_focus (focus_child);
7891           break;
7892         }
7893
7894       if (gtk_widget_child_focus (focus_child, dir))
7895         {
7896           /* The focus moves inside the button. */
7897           /* This is probably a great example of bad UI */
7898           break;
7899         }
7900
7901       /* We need to move the focus among the row of buttons. */
7902       for (tmp_list = tree_view->priv->columns; tmp_list; tmp_list = tmp_list->next)
7903         if (GTK_TREE_VIEW_COLUMN (tmp_list->data)->button == focus_child)
7904           break;
7905
7906       if ((tmp_list == first_column && dir == (rtl ? GTK_DIR_RIGHT : GTK_DIR_LEFT))
7907           || (tmp_list == last_column && dir == (rtl ? GTK_DIR_LEFT : GTK_DIR_RIGHT)))
7908         {
7909           gtk_widget_error_bell (GTK_WIDGET (tree_view));
7910           break;
7911         }
7912
7913       while (tmp_list)
7914         {
7915           GtkTreeViewColumn *column;
7916
7917           if (dir == (rtl ? GTK_DIR_LEFT : GTK_DIR_RIGHT))
7918             tmp_list = tmp_list->next;
7919           else
7920             tmp_list = tmp_list->prev;
7921
7922           if (tmp_list == NULL)
7923             {
7924               g_warning ("Internal button not found");
7925               break;
7926             }
7927           column = tmp_list->data;
7928           if (column->button &&
7929               column->visible &&
7930               gtk_widget_get_can_focus (column->button))
7931             {
7932               focus_child = column->button;
7933               gtk_widget_grab_focus (column->button);
7934               break;
7935             }
7936         }
7937       break;
7938     default:
7939       g_assert_not_reached ();
7940       break;
7941     }
7942
7943   /* if focus child is non-null, we assume it's been set to the current focus child
7944    */
7945   if (focus_child)
7946     {
7947       for (tmp_list = tree_view->priv->columns; tmp_list; tmp_list = tmp_list->next)
7948         if (GTK_TREE_VIEW_COLUMN (tmp_list->data)->button == focus_child)
7949           {
7950             tree_view->priv->focus_column = GTK_TREE_VIEW_COLUMN (tmp_list->data);
7951             break;
7952           }
7953
7954       if (clamp_column_visible)
7955         {
7956           gtk_tree_view_clamp_column_visible (tree_view,
7957                                               tree_view->priv->focus_column,
7958                                               FALSE);
7959         }
7960     }
7961
7962   return (focus_child != NULL);
7963 }
7964
7965 /* This function returns in 'path' the first focusable path, if the given path
7966  * is already focusable, it's the returned one.
7967  */
7968 static gboolean
7969 search_first_focusable_path (GtkTreeView  *tree_view,
7970                              GtkTreePath **path,
7971                              gboolean      search_forward,
7972                              GtkRBTree   **new_tree,
7973                              GtkRBNode   **new_node)
7974 {
7975   GtkRBTree *tree = NULL;
7976   GtkRBNode *node = NULL;
7977
7978   if (!path || !*path)
7979     return FALSE;
7980
7981   _gtk_tree_view_find_node (tree_view, *path, &tree, &node);
7982
7983   if (!tree || !node)
7984     return FALSE;
7985
7986   while (node && row_is_separator (tree_view, NULL, *path))
7987     {
7988       if (search_forward)
7989         _gtk_rbtree_next_full (tree, node, &tree, &node);
7990       else
7991         _gtk_rbtree_prev_full (tree, node, &tree, &node);
7992
7993       if (*path)
7994         gtk_tree_path_free (*path);
7995
7996       if (node)
7997         *path = _gtk_tree_view_find_path (tree_view, tree, node);
7998       else
7999         *path = NULL;
8000     }
8001
8002   if (new_tree)
8003     *new_tree = tree;
8004
8005   if (new_node)
8006     *new_node = node;
8007
8008   return (*path != NULL);
8009 }
8010
8011 static gint
8012 gtk_tree_view_focus (GtkWidget        *widget,
8013                      GtkDirectionType  direction)
8014 {
8015   GtkTreeView *tree_view = GTK_TREE_VIEW (widget);
8016   GtkContainer *container = GTK_CONTAINER (widget);
8017   GtkWidget *focus_child;
8018
8019   if (!gtk_widget_is_sensitive (widget) || !gtk_widget_get_can_focus (widget))
8020     return FALSE;
8021
8022   focus_child = gtk_container_get_focus_child (container);
8023
8024   gtk_tree_view_stop_editing (GTK_TREE_VIEW (widget), FALSE);
8025   /* Case 1.  Headers currently have focus. */
8026   if (focus_child)
8027     {
8028       switch (direction)
8029         {
8030         case GTK_DIR_LEFT:
8031         case GTK_DIR_RIGHT:
8032           gtk_tree_view_header_focus (tree_view, direction, TRUE);
8033           return TRUE;
8034         case GTK_DIR_TAB_BACKWARD:
8035         case GTK_DIR_UP:
8036           return FALSE;
8037         case GTK_DIR_TAB_FORWARD:
8038         case GTK_DIR_DOWN:
8039           gtk_widget_grab_focus (widget);
8040           return TRUE;
8041         default:
8042           g_assert_not_reached ();
8043           return FALSE;
8044         }
8045     }
8046
8047   /* Case 2. We don't have focus at all. */
8048   if (!gtk_widget_has_focus (widget))
8049     {
8050       if (!gtk_tree_view_header_focus (tree_view, direction, FALSE))
8051         gtk_widget_grab_focus (widget);
8052       return TRUE;
8053     }
8054
8055   /* Case 3. We have focus already. */
8056   if (direction == GTK_DIR_TAB_BACKWARD)
8057     return (gtk_tree_view_header_focus (tree_view, direction, FALSE));
8058   else if (direction == GTK_DIR_TAB_FORWARD)
8059     return FALSE;
8060
8061   /* Other directions caught by the keybindings */
8062   gtk_widget_grab_focus (widget);
8063   return TRUE;
8064 }
8065
8066 static void
8067 gtk_tree_view_grab_focus (GtkWidget *widget)
8068 {
8069   GTK_WIDGET_CLASS (gtk_tree_view_parent_class)->grab_focus (widget);
8070
8071   gtk_tree_view_focus_to_cursor (GTK_TREE_VIEW (widget));
8072 }
8073
8074 static void
8075 gtk_tree_view_style_set (GtkWidget *widget,
8076                          GtkStyle *previous_style)
8077 {
8078   GtkTreeView *tree_view = GTK_TREE_VIEW (widget);
8079   GtkStyle *style;
8080   GList *list;
8081   GtkTreeViewColumn *column;
8082
8083   if (gtk_widget_get_realized (widget))
8084     {
8085       gdk_window_set_back_pixmap (gtk_widget_get_window (widget), NULL, FALSE);
8086       style = gtk_widget_get_style (widget);
8087       gdk_window_set_background (tree_view->priv->bin_window,
8088                                  &style->base[gtk_widget_get_state (widget)]);
8089       gtk_style_set_background (style, tree_view->priv->header_window, GTK_STATE_NORMAL);
8090
8091       gtk_tree_view_set_grid_lines (tree_view, tree_view->priv->grid_lines);
8092       gtk_tree_view_set_enable_tree_lines (tree_view, tree_view->priv->tree_lines_enabled);
8093     }
8094
8095   gtk_widget_style_get (widget,
8096                         "expander-size", &tree_view->priv->expander_size,
8097                         NULL);
8098   tree_view->priv->expander_size += EXPANDER_EXTRA_PADDING;
8099
8100   for (list = tree_view->priv->columns; list; list = list->next)
8101     {
8102       column = list->data;
8103       _gtk_tree_view_column_cell_set_dirty (column, TRUE);
8104     }
8105
8106   tree_view->priv->fixed_height = -1;
8107   _gtk_rbtree_mark_invalid (tree_view->priv->tree);
8108
8109   gtk_widget_queue_resize (widget);
8110 }
8111
8112
8113 static void
8114 gtk_tree_view_set_focus_child (GtkContainer *container,
8115                                GtkWidget    *child)
8116 {
8117   GtkTreeView *tree_view = GTK_TREE_VIEW (container);
8118   GList *list;
8119
8120   for (list = tree_view->priv->columns; list; list = list->next)
8121     {
8122       if (GTK_TREE_VIEW_COLUMN (list->data)->button == child)
8123         {
8124           tree_view->priv->focus_column = GTK_TREE_VIEW_COLUMN (list->data);
8125           break;
8126         }
8127     }
8128
8129   GTK_CONTAINER_CLASS (gtk_tree_view_parent_class)->set_focus_child (container, child);
8130 }
8131
8132 static void
8133 gtk_tree_view_set_adjustments (GtkTreeView   *tree_view,
8134                                GtkAdjustment *hadj,
8135                                GtkAdjustment *vadj)
8136 {
8137   gboolean need_adjust = FALSE;
8138
8139   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
8140
8141   if (hadj)
8142     g_return_if_fail (GTK_IS_ADJUSTMENT (hadj));
8143   else
8144     hadj = GTK_ADJUSTMENT (gtk_adjustment_new (0.0, 0.0, 0.0, 0.0, 0.0, 0.0));
8145   if (vadj)
8146     g_return_if_fail (GTK_IS_ADJUSTMENT (vadj));
8147   else
8148     vadj = GTK_ADJUSTMENT (gtk_adjustment_new (0.0, 0.0, 0.0, 0.0, 0.0, 0.0));
8149
8150   if (tree_view->priv->hadjustment && (tree_view->priv->hadjustment != hadj))
8151     {
8152       g_signal_handlers_disconnect_by_func (tree_view->priv->hadjustment,
8153                                             gtk_tree_view_adjustment_changed,
8154                                             tree_view);
8155       g_object_unref (tree_view->priv->hadjustment);
8156     }
8157
8158   if (tree_view->priv->vadjustment && (tree_view->priv->vadjustment != vadj))
8159     {
8160       g_signal_handlers_disconnect_by_func (tree_view->priv->vadjustment,
8161                                             gtk_tree_view_adjustment_changed,
8162                                             tree_view);
8163       g_object_unref (tree_view->priv->vadjustment);
8164     }
8165
8166   if (tree_view->priv->hadjustment != hadj)
8167     {
8168       tree_view->priv->hadjustment = hadj;
8169       g_object_ref_sink (tree_view->priv->hadjustment);
8170
8171       g_signal_connect (tree_view->priv->hadjustment, "value-changed",
8172                         G_CALLBACK (gtk_tree_view_adjustment_changed),
8173                         tree_view);
8174       need_adjust = TRUE;
8175     }
8176
8177   if (tree_view->priv->vadjustment != vadj)
8178     {
8179       tree_view->priv->vadjustment = vadj;
8180       g_object_ref_sink (tree_view->priv->vadjustment);
8181
8182       g_signal_connect (tree_view->priv->vadjustment, "value-changed",
8183                         G_CALLBACK (gtk_tree_view_adjustment_changed),
8184                         tree_view);
8185       need_adjust = TRUE;
8186     }
8187
8188   if (need_adjust)
8189     gtk_tree_view_adjustment_changed (NULL, tree_view);
8190 }
8191
8192
8193 static gboolean
8194 gtk_tree_view_real_move_cursor (GtkTreeView       *tree_view,
8195                                 GtkMovementStep    step,
8196                                 gint               count)
8197 {
8198   GdkModifierType state;
8199
8200   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), FALSE);
8201   g_return_val_if_fail (step == GTK_MOVEMENT_LOGICAL_POSITIONS ||
8202                         step == GTK_MOVEMENT_VISUAL_POSITIONS ||
8203                         step == GTK_MOVEMENT_DISPLAY_LINES ||
8204                         step == GTK_MOVEMENT_PAGES ||
8205                         step == GTK_MOVEMENT_BUFFER_ENDS, FALSE);
8206
8207   if (tree_view->priv->tree == NULL)
8208     return FALSE;
8209   if (!gtk_widget_has_focus (GTK_WIDGET (tree_view)))
8210     return FALSE;
8211
8212   gtk_tree_view_stop_editing (tree_view, FALSE);
8213   GTK_TREE_VIEW_SET_FLAG (tree_view, GTK_TREE_VIEW_DRAW_KEYFOCUS);
8214   gtk_widget_grab_focus (GTK_WIDGET (tree_view));
8215
8216   if (gtk_get_current_event_state (&state))
8217     {
8218       if ((state & GDK_CONTROL_MASK) == GDK_CONTROL_MASK)
8219         tree_view->priv->ctrl_pressed = TRUE;
8220       if ((state & GDK_SHIFT_MASK) == GDK_SHIFT_MASK)
8221         tree_view->priv->shift_pressed = TRUE;
8222     }
8223   /* else we assume not pressed */
8224
8225   switch (step)
8226     {
8227       /* currently we make no distinction.  When we go bi-di, we need to */
8228     case GTK_MOVEMENT_LOGICAL_POSITIONS:
8229     case GTK_MOVEMENT_VISUAL_POSITIONS:
8230       gtk_tree_view_move_cursor_left_right (tree_view, count);
8231       break;
8232     case GTK_MOVEMENT_DISPLAY_LINES:
8233       gtk_tree_view_move_cursor_up_down (tree_view, count);
8234       break;
8235     case GTK_MOVEMENT_PAGES:
8236       gtk_tree_view_move_cursor_page_up_down (tree_view, count);
8237       break;
8238     case GTK_MOVEMENT_BUFFER_ENDS:
8239       gtk_tree_view_move_cursor_start_end (tree_view, count);
8240       break;
8241     default:
8242       g_assert_not_reached ();
8243     }
8244
8245   tree_view->priv->ctrl_pressed = FALSE;
8246   tree_view->priv->shift_pressed = FALSE;
8247
8248   return TRUE;
8249 }
8250
8251 static void
8252 gtk_tree_view_put (GtkTreeView *tree_view,
8253                    GtkWidget   *child_widget,
8254                    /* in bin_window coordinates */
8255                    gint         x,
8256                    gint         y,
8257                    gint         width,
8258                    gint         height)
8259 {
8260   GtkTreeViewChild *child;
8261
8262   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
8263   g_return_if_fail (GTK_IS_WIDGET (child_widget));
8264
8265   child = g_slice_new (GtkTreeViewChild);
8266
8267   child->widget = child_widget;
8268   child->x = x;
8269   child->y = y;
8270   child->width = width;
8271   child->height = height;
8272
8273   tree_view->priv->children = g_list_append (tree_view->priv->children, child);
8274
8275   if (gtk_widget_get_realized (GTK_WIDGET (tree_view)))
8276     gtk_widget_set_parent_window (child->widget, tree_view->priv->bin_window);
8277
8278   gtk_widget_set_parent (child_widget, GTK_WIDGET (tree_view));
8279 }
8280
8281 void
8282 _gtk_tree_view_child_move_resize (GtkTreeView *tree_view,
8283                                   GtkWidget   *widget,
8284                                   /* in tree coordinates */
8285                                   gint         x,
8286                                   gint         y,
8287                                   gint         width,
8288                                   gint         height)
8289 {
8290   GtkTreeViewChild *child = NULL;
8291   GList *list;
8292   GdkRectangle allocation;
8293
8294   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
8295   g_return_if_fail (GTK_IS_WIDGET (widget));
8296
8297   for (list = tree_view->priv->children; list; list = list->next)
8298     {
8299       if (((GtkTreeViewChild *)list->data)->widget == widget)
8300         {
8301           child = list->data;
8302           break;
8303         }
8304     }
8305   if (child == NULL)
8306     return;
8307
8308   allocation.x = child->x = x;
8309   allocation.y = child->y = y;
8310   allocation.width = child->width = width;
8311   allocation.height = child->height = height;
8312
8313   if (gtk_widget_get_realized (widget))
8314     gtk_widget_size_allocate (widget, &allocation);
8315 }
8316
8317
8318 /* TreeModel Callbacks
8319  */
8320
8321 static void
8322 gtk_tree_view_row_changed (GtkTreeModel *model,
8323                            GtkTreePath  *path,
8324                            GtkTreeIter  *iter,
8325                            gpointer      data)
8326 {
8327   GtkTreeView *tree_view = (GtkTreeView *)data;
8328   GtkRBTree *tree;
8329   GtkRBNode *node;
8330   gboolean free_path = FALSE;
8331   GList *list;
8332   GtkTreePath *cursor_path;
8333
8334   g_return_if_fail (path != NULL || iter != NULL);
8335
8336   if (tree_view->priv->cursor != NULL)
8337     cursor_path = gtk_tree_row_reference_get_path (tree_view->priv->cursor);
8338   else
8339     cursor_path = NULL;
8340
8341   if (tree_view->priv->edited_column &&
8342       (cursor_path == NULL || gtk_tree_path_compare (cursor_path, path) == 0))
8343     gtk_tree_view_stop_editing (tree_view, TRUE);
8344
8345   if (cursor_path != NULL)
8346     gtk_tree_path_free (cursor_path);
8347
8348   if (path == NULL)
8349     {
8350       path = gtk_tree_model_get_path (model, iter);
8351       free_path = TRUE;
8352     }
8353   else if (iter == NULL)
8354     gtk_tree_model_get_iter (model, iter, path);
8355
8356   if (_gtk_tree_view_find_node (tree_view,
8357                                 path,
8358                                 &tree,
8359                                 &node))
8360     /* We aren't actually showing the node */
8361     goto done;
8362
8363   if (tree == NULL)
8364     goto done;
8365
8366   if (tree_view->priv->fixed_height_mode
8367       && tree_view->priv->fixed_height >= 0)
8368     {
8369       _gtk_rbtree_node_set_height (tree, node, tree_view->priv->fixed_height);
8370       if (gtk_widget_get_realized (GTK_WIDGET (tree_view)))
8371         gtk_tree_view_node_queue_redraw (tree_view, tree, node);
8372     }
8373   else
8374     {
8375       _gtk_rbtree_node_mark_invalid (tree, node);
8376       for (list = tree_view->priv->columns; list; list = list->next)
8377         {
8378           GtkTreeViewColumn *column;
8379
8380           column = list->data;
8381           if (! column->visible)
8382             continue;
8383
8384           if (column->column_type == GTK_TREE_VIEW_COLUMN_AUTOSIZE)
8385             {
8386               _gtk_tree_view_column_cell_set_dirty (column, TRUE);
8387             }
8388         }
8389     }
8390
8391  done:
8392   if (!tree_view->priv->fixed_height_mode &&
8393       gtk_widget_get_realized (GTK_WIDGET (tree_view)))
8394     install_presize_handler (tree_view);
8395   if (free_path)
8396     gtk_tree_path_free (path);
8397 }
8398
8399 static void
8400 gtk_tree_view_row_inserted (GtkTreeModel *model,
8401                             GtkTreePath  *path,
8402                             GtkTreeIter  *iter,
8403                             gpointer      data)
8404 {
8405   GtkTreeView *tree_view = (GtkTreeView *) data;
8406   gint *indices;
8407   GtkRBTree *tmptree, *tree;
8408   GtkRBNode *tmpnode = NULL;
8409   gint depth;
8410   gint i = 0;
8411   gint height;
8412   gboolean free_path = FALSE;
8413   gboolean node_visible = TRUE;
8414
8415   g_return_if_fail (path != NULL || iter != NULL);
8416
8417   if (tree_view->priv->fixed_height_mode
8418       && tree_view->priv->fixed_height >= 0)
8419     height = tree_view->priv->fixed_height;
8420   else
8421     height = 0;
8422
8423   if (path == NULL)
8424     {
8425       path = gtk_tree_model_get_path (model, iter);
8426       free_path = TRUE;
8427     }
8428   else if (iter == NULL)
8429     gtk_tree_model_get_iter (model, iter, path);
8430
8431   if (tree_view->priv->tree == NULL)
8432     tree_view->priv->tree = _gtk_rbtree_new ();
8433
8434   tmptree = tree = tree_view->priv->tree;
8435
8436   /* Update all row-references */
8437   gtk_tree_row_reference_inserted (G_OBJECT (data), path);
8438   depth = gtk_tree_path_get_depth (path);
8439   indices = gtk_tree_path_get_indices (path);
8440
8441   /* First, find the parent tree */
8442   while (i < depth - 1)
8443     {
8444       if (tmptree == NULL)
8445         {
8446           /* We aren't showing the node */
8447           node_visible = FALSE;
8448           goto done;
8449         }
8450
8451       tmpnode = _gtk_rbtree_find_count (tmptree, indices[i] + 1);
8452       if (tmpnode == NULL)
8453         {
8454           g_warning ("A node was inserted with a parent that's not in the tree.\n" \
8455                      "This possibly means that a GtkTreeModel inserted a child node\n" \
8456                      "before the parent was inserted.");
8457           goto done;
8458         }
8459       else if (!GTK_RBNODE_FLAG_SET (tmpnode, GTK_RBNODE_IS_PARENT))
8460         {
8461           /* FIXME enforce correct behavior on model, probably */
8462           /* In theory, the model should have emitted has_child_toggled here.  We
8463            * try to catch it anyway, just to be safe, in case the model hasn't.
8464            */
8465           GtkTreePath *tmppath = _gtk_tree_view_find_path (tree_view,
8466                                                            tree,
8467                                                            tmpnode);
8468           gtk_tree_view_row_has_child_toggled (model, tmppath, NULL, data);
8469           gtk_tree_path_free (tmppath);
8470           goto done;
8471         }
8472
8473       tmptree = tmpnode->children;
8474       tree = tmptree;
8475       i++;
8476     }
8477
8478   if (tree == NULL)
8479     {
8480       node_visible = FALSE;
8481       goto done;
8482     }
8483
8484   /* ref the node */
8485   gtk_tree_model_ref_node (tree_view->priv->model, iter);
8486   if (indices[depth - 1] == 0)
8487     {
8488       tmpnode = _gtk_rbtree_find_count (tree, 1);
8489       tmpnode = _gtk_rbtree_insert_before (tree, tmpnode, height, FALSE);
8490     }
8491   else
8492     {
8493       tmpnode = _gtk_rbtree_find_count (tree, indices[depth - 1]);
8494       tmpnode = _gtk_rbtree_insert_after (tree, tmpnode, height, FALSE);
8495     }
8496
8497  done:
8498   if (height > 0)
8499     {
8500       if (tree)
8501         _gtk_rbtree_node_mark_valid (tree, tmpnode);
8502
8503       if (node_visible && node_is_visible (tree_view, tree, tmpnode))
8504         gtk_widget_queue_resize (GTK_WIDGET (tree_view));
8505       else
8506         gtk_widget_queue_resize_no_redraw (GTK_WIDGET (tree_view));
8507     }
8508   else
8509     install_presize_handler (tree_view);
8510   if (free_path)
8511     gtk_tree_path_free (path);
8512 }
8513
8514 static void
8515 gtk_tree_view_row_has_child_toggled (GtkTreeModel *model,
8516                                      GtkTreePath  *path,
8517                                      GtkTreeIter  *iter,
8518                                      gpointer      data)
8519 {
8520   GtkTreeView *tree_view = (GtkTreeView *)data;
8521   GtkTreeIter real_iter;
8522   gboolean has_child;
8523   GtkRBTree *tree;
8524   GtkRBNode *node;
8525   gboolean free_path = FALSE;
8526
8527   g_return_if_fail (path != NULL || iter != NULL);
8528
8529   if (iter)
8530     real_iter = *iter;
8531
8532   if (path == NULL)
8533     {
8534       path = gtk_tree_model_get_path (model, iter);
8535       free_path = TRUE;
8536     }
8537   else if (iter == NULL)
8538     gtk_tree_model_get_iter (model, &real_iter, path);
8539
8540   if (_gtk_tree_view_find_node (tree_view,
8541                                 path,
8542                                 &tree,
8543                                 &node))
8544     /* We aren't actually showing the node */
8545     goto done;
8546
8547   if (tree == NULL)
8548     goto done;
8549
8550   has_child = gtk_tree_model_iter_has_child (model, &real_iter);
8551   /* Sanity check.
8552    */
8553   if (GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_PARENT) == has_child)
8554     goto done;
8555
8556   if (has_child)
8557     GTK_RBNODE_SET_FLAG (node, GTK_RBNODE_IS_PARENT);
8558   else
8559     GTK_RBNODE_UNSET_FLAG (node, GTK_RBNODE_IS_PARENT);
8560
8561   if (has_child && GTK_TREE_VIEW_FLAG_SET (tree_view, GTK_TREE_VIEW_IS_LIST))
8562     {
8563       GTK_TREE_VIEW_UNSET_FLAG (tree_view, GTK_TREE_VIEW_IS_LIST);
8564       if (GTK_TREE_VIEW_FLAG_SET (tree_view, GTK_TREE_VIEW_SHOW_EXPANDERS))
8565         {
8566           GList *list;
8567
8568           for (list = tree_view->priv->columns; list; list = list->next)
8569             if (GTK_TREE_VIEW_COLUMN (list->data)->visible)
8570               {
8571                 GTK_TREE_VIEW_COLUMN (list->data)->dirty = TRUE;
8572                 _gtk_tree_view_column_cell_set_dirty (GTK_TREE_VIEW_COLUMN (list->data), TRUE);
8573                 break;
8574               }
8575         }
8576       gtk_widget_queue_resize (GTK_WIDGET (tree_view));
8577     }
8578   else
8579     {
8580       _gtk_tree_view_queue_draw_node (tree_view, tree, node, NULL);
8581     }
8582
8583  done:
8584   if (free_path)
8585     gtk_tree_path_free (path);
8586 }
8587
8588 static void
8589 count_children_helper (GtkRBTree *tree,
8590                        GtkRBNode *node,
8591                        gpointer   data)
8592 {
8593   if (node->children)
8594     _gtk_rbtree_traverse (node->children, node->children->root, G_POST_ORDER, count_children_helper, data);
8595   (*((gint *)data))++;
8596 }
8597
8598 static void
8599 check_selection_helper (GtkRBTree *tree,
8600                         GtkRBNode *node,
8601                         gpointer   data)
8602 {
8603   gint *value = (gint *)data;
8604
8605   *value = GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_SELECTED);
8606
8607   if (node->children && !*value)
8608     _gtk_rbtree_traverse (node->children, node->children->root, G_POST_ORDER, check_selection_helper, data);
8609 }
8610
8611 static void
8612 gtk_tree_view_row_deleted (GtkTreeModel *model,
8613                            GtkTreePath  *path,
8614                            gpointer      data)
8615 {
8616   GtkTreeView *tree_view = (GtkTreeView *)data;
8617   GtkRBTree *tree;
8618   GtkRBNode *node;
8619   GList *list;
8620   gint selection_changed = FALSE;
8621
8622   g_return_if_fail (path != NULL);
8623
8624   gtk_tree_row_reference_deleted (G_OBJECT (data), path);
8625
8626   if (_gtk_tree_view_find_node (tree_view, path, &tree, &node))
8627     return;
8628
8629   if (tree == NULL)
8630     return;
8631
8632   /* check if the selection has been changed */
8633   _gtk_rbtree_traverse (tree, node, G_POST_ORDER,
8634                         check_selection_helper, &selection_changed);
8635
8636   for (list = tree_view->priv->columns; list; list = list->next)
8637     if (((GtkTreeViewColumn *)list->data)->visible &&
8638         ((GtkTreeViewColumn *)list->data)->column_type == GTK_TREE_VIEW_COLUMN_AUTOSIZE)
8639       _gtk_tree_view_column_cell_set_dirty ((GtkTreeViewColumn *)list->data, TRUE);
8640
8641   /* Ensure we don't have a dangling pointer to a dead node */
8642   ensure_unprelighted (tree_view);
8643
8644   /* Cancel editting if we've started */
8645   gtk_tree_view_stop_editing (tree_view, TRUE);
8646
8647   /* If we have a node expanded/collapsed timeout, remove it */
8648   remove_expand_collapse_timeout (tree_view);
8649
8650   if (tree_view->priv->destroy_count_func)
8651     {
8652       gint child_count = 0;
8653       if (node->children)
8654         _gtk_rbtree_traverse (node->children, node->children->root, G_POST_ORDER, count_children_helper, &child_count);
8655       tree_view->priv->destroy_count_func (tree_view, path, child_count, tree_view->priv->destroy_count_data);
8656     }
8657
8658   if (tree->root->count == 1)
8659     {
8660       if (tree_view->priv->tree == tree)
8661         tree_view->priv->tree = NULL;
8662
8663       _gtk_rbtree_remove (tree);
8664     }
8665   else
8666     {
8667       _gtk_rbtree_remove_node (tree, node);
8668     }
8669
8670   if (! gtk_tree_row_reference_valid (tree_view->priv->top_row))
8671     {
8672       gtk_tree_row_reference_free (tree_view->priv->top_row);
8673       tree_view->priv->top_row = NULL;
8674     }
8675
8676   install_scroll_sync_handler (tree_view);
8677
8678   gtk_widget_queue_resize (GTK_WIDGET (tree_view));
8679
8680   if (selection_changed)
8681     g_signal_emit_by_name (tree_view->priv->selection, "changed");
8682 }
8683
8684 static void
8685 gtk_tree_view_rows_reordered (GtkTreeModel *model,
8686                               GtkTreePath  *parent,
8687                               GtkTreeIter  *iter,
8688                               gint         *new_order,
8689                               gpointer      data)
8690 {
8691   GtkTreeView *tree_view = GTK_TREE_VIEW (data);
8692   GtkRBTree *tree;
8693   GtkRBNode *node;
8694   gint len;
8695
8696   len = gtk_tree_model_iter_n_children (model, iter);
8697
8698   if (len < 2)
8699     return;
8700
8701   gtk_tree_row_reference_reordered (G_OBJECT (data),
8702                                     parent,
8703                                     iter,
8704                                     new_order);
8705
8706   if (_gtk_tree_view_find_node (tree_view,
8707                                 parent,
8708                                 &tree,
8709                                 &node))
8710     return;
8711
8712   /* We need to special case the parent path */
8713   if (tree == NULL)
8714     tree = tree_view->priv->tree;
8715   else
8716     tree = node->children;
8717
8718   if (tree == NULL)
8719     return;
8720
8721   if (tree_view->priv->edited_column)
8722     gtk_tree_view_stop_editing (tree_view, TRUE);
8723
8724   /* we need to be unprelighted */
8725   ensure_unprelighted (tree_view);
8726
8727   /* clear the timeout */
8728   cancel_arrow_animation (tree_view);
8729
8730   _gtk_rbtree_reorder (tree, new_order, len);
8731
8732   gtk_widget_queue_draw (GTK_WIDGET (tree_view));
8733
8734   gtk_tree_view_dy_to_top_row (tree_view);
8735 }
8736
8737
8738 /* Internal tree functions
8739  */
8740
8741
8742 static void
8743 gtk_tree_view_get_background_xrange (GtkTreeView       *tree_view,
8744                                      GtkRBTree         *tree,
8745                                      GtkTreeViewColumn *column,
8746                                      gint              *x1,
8747                                      gint              *x2)
8748 {
8749   GtkTreeViewColumn *tmp_column = NULL;
8750   gint total_width;
8751   GList *list;
8752   gboolean rtl;
8753
8754   if (x1)
8755     *x1 = 0;
8756
8757   if (x2)
8758     *x2 = 0;
8759
8760   rtl = (gtk_widget_get_direction (GTK_WIDGET (tree_view)) == GTK_TEXT_DIR_RTL);
8761
8762   total_width = 0;
8763   for (list = (rtl ? g_list_last (tree_view->priv->columns) : g_list_first (tree_view->priv->columns));
8764        list;
8765        list = (rtl ? list->prev : list->next))
8766     {
8767       tmp_column = list->data;
8768
8769       if (tmp_column == column)
8770         break;
8771
8772       if (tmp_column->visible)
8773         total_width += tmp_column->width;
8774     }
8775
8776   if (tmp_column != column)
8777     {
8778       g_warning (G_STRLOC": passed-in column isn't in the tree");
8779       return;
8780     }
8781
8782   if (x1)
8783     *x1 = total_width;
8784
8785   if (x2)
8786     {
8787       if (column->visible)
8788         *x2 = total_width + column->width;
8789       else
8790         *x2 = total_width; /* width of 0 */
8791     }
8792 }
8793 static void
8794 gtk_tree_view_get_arrow_xrange (GtkTreeView *tree_view,
8795                                 GtkRBTree   *tree,
8796                                 gint        *x1,
8797                                 gint        *x2)
8798 {
8799   gint x_offset = 0;
8800   GList *list;
8801   GtkTreeViewColumn *tmp_column = NULL;
8802   gint total_width;
8803   gboolean indent_expanders;
8804   gboolean rtl;
8805
8806   rtl = (gtk_widget_get_direction (GTK_WIDGET (tree_view)) == GTK_TEXT_DIR_RTL);
8807
8808   total_width = 0;
8809   for (list = (rtl ? g_list_last (tree_view->priv->columns) : g_list_first (tree_view->priv->columns));
8810        list;
8811        list = (rtl ? list->prev : list->next))
8812     {
8813       tmp_column = list->data;
8814
8815       if (gtk_tree_view_is_expander_column (tree_view, tmp_column))
8816         {
8817           if (rtl)
8818             x_offset = total_width + tmp_column->width - tree_view->priv->expander_size;
8819           else
8820             x_offset = total_width;
8821           break;
8822         }
8823
8824       if (tmp_column->visible)
8825         total_width += tmp_column->width;
8826     }
8827
8828   gtk_widget_style_get (GTK_WIDGET (tree_view),
8829                         "indent-expanders", &indent_expanders,
8830                         NULL);
8831
8832   if (indent_expanders)
8833     {
8834       if (rtl)
8835         x_offset -= tree_view->priv->expander_size * _gtk_rbtree_get_depth (tree);
8836       else
8837         x_offset += tree_view->priv->expander_size * _gtk_rbtree_get_depth (tree);
8838     }
8839
8840   *x1 = x_offset;
8841
8842   if (tmp_column && tmp_column->visible)
8843     /* +1 because x2 isn't included in the range. */
8844     *x2 = *x1 + tree_view->priv->expander_size + 1;
8845   else
8846     *x2 = *x1;
8847 }
8848
8849 static void
8850 gtk_tree_view_build_tree (GtkTreeView *tree_view,
8851                           GtkRBTree   *tree,
8852                           GtkTreeIter *iter,
8853                           gint         depth,
8854                           gboolean     recurse)
8855 {
8856   GtkRBNode *temp = NULL;
8857   GtkTreePath *path = NULL;
8858   gboolean is_list = GTK_TREE_VIEW_FLAG_SET (tree_view, GTK_TREE_VIEW_IS_LIST);
8859
8860   do
8861     {
8862       gtk_tree_model_ref_node (tree_view->priv->model, iter);
8863       temp = _gtk_rbtree_insert_after (tree, temp, 0, FALSE);
8864
8865       if (tree_view->priv->fixed_height > 0)
8866         {
8867           if (GTK_RBNODE_FLAG_SET (temp, GTK_RBNODE_INVALID))
8868             {
8869               _gtk_rbtree_node_set_height (tree, temp, tree_view->priv->fixed_height);
8870               _gtk_rbtree_node_mark_valid (tree, temp);
8871             }
8872         }
8873
8874       if (is_list)
8875         continue;
8876
8877       if (recurse)
8878         {
8879           GtkTreeIter child;
8880
8881           if (!path)
8882             path = gtk_tree_model_get_path (tree_view->priv->model, iter);
8883           else
8884             gtk_tree_path_next (path);
8885
8886           if (gtk_tree_model_iter_children (tree_view->priv->model, &child, iter))
8887             {
8888               gboolean expand;
8889
8890               g_signal_emit (tree_view, tree_view_signals[TEST_EXPAND_ROW], 0, iter, path, &expand);
8891
8892               if (gtk_tree_model_iter_has_child (tree_view->priv->model, iter)
8893                   && !expand)
8894                 {
8895                   temp->children = _gtk_rbtree_new ();
8896                   temp->children->parent_tree = tree;
8897                   temp->children->parent_node = temp;
8898                   gtk_tree_view_build_tree (tree_view, temp->children, &child, depth + 1, recurse);
8899                 }
8900             }
8901         }
8902
8903       if (gtk_tree_model_iter_has_child (tree_view->priv->model, iter))
8904         {
8905           if ((temp->flags&GTK_RBNODE_IS_PARENT) != GTK_RBNODE_IS_PARENT)
8906             temp->flags ^= GTK_RBNODE_IS_PARENT;
8907         }
8908     }
8909   while (gtk_tree_model_iter_next (tree_view->priv->model, iter));
8910
8911   if (path)
8912     gtk_tree_path_free (path);
8913 }
8914
8915 /* Make sure the node is visible vertically */
8916 static void
8917 gtk_tree_view_clamp_node_visible (GtkTreeView *tree_view,
8918                                   GtkRBTree   *tree,
8919                                   GtkRBNode   *node)
8920 {
8921   gint node_dy, height;
8922   GtkTreePath *path = NULL;
8923
8924   if (!gtk_widget_get_realized (GTK_WIDGET (tree_view)))
8925     return;
8926
8927   /* just return if the node is visible, avoiding a costly expose */
8928   node_dy = _gtk_rbtree_node_find_offset (tree, node);
8929   height = ROW_HEIGHT (tree_view, GTK_RBNODE_GET_HEIGHT (node));
8930   if (! GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_INVALID)
8931       && node_dy >= tree_view->priv->vadjustment->value
8932       && node_dy + height <= (tree_view->priv->vadjustment->value
8933                               + tree_view->priv->vadjustment->page_size))
8934     return;
8935
8936   path = _gtk_tree_view_find_path (tree_view, tree, node);
8937   if (path)
8938     {
8939       /* We process updates because we want to clear old selected items when we scroll.
8940        * if this is removed, we get a "selection streak" at the bottom. */
8941       gdk_window_process_updates (tree_view->priv->bin_window, TRUE);
8942       gtk_tree_view_scroll_to_cell (tree_view, path, NULL, FALSE, 0.0, 0.0);
8943       gtk_tree_path_free (path);
8944     }
8945 }
8946
8947 static void
8948 gtk_tree_view_clamp_column_visible (GtkTreeView       *tree_view,
8949                                     GtkTreeViewColumn *column,
8950                                     gboolean           focus_to_cell)
8951 {
8952   GtkAllocation allocation;
8953   gint x, width;
8954
8955   if (column == NULL)
8956     return;
8957
8958   gtk_widget_get_allocation (column->button, &allocation);
8959   x = allocation.x;
8960   width = allocation.width;
8961
8962   if (width > tree_view->priv->hadjustment->page_size)
8963     {
8964       /* The column is larger than the horizontal page size.  If the
8965        * column has cells which can be focussed individually, then we make
8966        * sure the cell which gets focus is fully visible (if even the
8967        * focus cell is bigger than the page size, we make sure the
8968        * left-hand side of the cell is visible).
8969        *
8970        * If the column does not have those so-called special cells, we
8971        * make sure the left-hand side of the column is visible.
8972        */
8973
8974       if (focus_to_cell && gtk_tree_view_has_special_cell (tree_view))
8975         {
8976           GtkTreePath *cursor_path;
8977           GdkRectangle background_area, cell_area, focus_area;
8978
8979           cursor_path = gtk_tree_row_reference_get_path (tree_view->priv->cursor);
8980
8981           gtk_tree_view_get_cell_area (tree_view,
8982                                        cursor_path, column, &cell_area);
8983           gtk_tree_view_get_background_area (tree_view,
8984                                              cursor_path, column,
8985                                              &background_area);
8986
8987           gtk_tree_path_free (cursor_path);
8988
8989           _gtk_tree_view_column_get_focus_area (column,
8990                                                 &background_area,
8991                                                 &cell_area,
8992                                                 &focus_area);
8993
8994           x = focus_area.x;
8995           width = focus_area.width;
8996
8997           if (width < tree_view->priv->hadjustment->page_size)
8998             {
8999               if ((tree_view->priv->hadjustment->value + tree_view->priv->hadjustment->page_size) < (x + width))
9000                 gtk_adjustment_set_value (tree_view->priv->hadjustment,
9001                                           x + width - tree_view->priv->hadjustment->page_size);
9002               else if (tree_view->priv->hadjustment->value > x)
9003                 gtk_adjustment_set_value (tree_view->priv->hadjustment, x);
9004             }
9005         }
9006
9007       gtk_adjustment_set_value (tree_view->priv->hadjustment, x);
9008     }
9009   else
9010     {
9011       if ((tree_view->priv->hadjustment->value + tree_view->priv->hadjustment->page_size) < (x + width))
9012           gtk_adjustment_set_value (tree_view->priv->hadjustment,
9013                                     x + width - tree_view->priv->hadjustment->page_size);
9014       else if (tree_view->priv->hadjustment->value > x)
9015         gtk_adjustment_set_value (tree_view->priv->hadjustment, x);
9016   }
9017 }
9018
9019 /* This function could be more efficient.  I'll optimize it if profiling seems
9020  * to imply that it is important */
9021 GtkTreePath *
9022 _gtk_tree_view_find_path (GtkTreeView *tree_view,
9023                           GtkRBTree   *tree,
9024                           GtkRBNode   *node)
9025 {
9026   GtkTreePath *path;
9027   GtkRBTree *tmp_tree;
9028   GtkRBNode *tmp_node, *last;
9029   gint count;
9030
9031   path = gtk_tree_path_new ();
9032
9033   g_return_val_if_fail (node != NULL, path);
9034   g_return_val_if_fail (node != tree->nil, path);
9035
9036   count = 1 + node->left->count;
9037
9038   last = node;
9039   tmp_node = node->parent;
9040   tmp_tree = tree;
9041   while (tmp_tree)
9042     {
9043       while (tmp_node != tmp_tree->nil)
9044         {
9045           if (tmp_node->right == last)
9046             count += 1 + tmp_node->left->count;
9047           last = tmp_node;
9048           tmp_node = tmp_node->parent;
9049         }
9050       gtk_tree_path_prepend_index (path, count - 1);
9051       last = tmp_tree->parent_node;
9052       tmp_tree = tmp_tree->parent_tree;
9053       if (last)
9054         {
9055           count = 1 + last->left->count;
9056           tmp_node = last->parent;
9057         }
9058     }
9059   return path;
9060 }
9061
9062 /* Returns TRUE if we ran out of tree before finding the path.  If the path is
9063  * invalid (ie. points to a node that's not in the tree), *tree and *node are
9064  * both set to NULL.
9065  */
9066 gboolean
9067 _gtk_tree_view_find_node (GtkTreeView  *tree_view,
9068                           GtkTreePath  *path,
9069                           GtkRBTree   **tree,
9070                           GtkRBNode   **node)
9071 {
9072   GtkRBNode *tmpnode = NULL;
9073   GtkRBTree *tmptree = tree_view->priv->tree;
9074   gint *indices = gtk_tree_path_get_indices (path);
9075   gint depth = gtk_tree_path_get_depth (path);
9076   gint i = 0;
9077
9078   *node = NULL;
9079   *tree = NULL;
9080
9081   if (depth == 0 || tmptree == NULL)
9082     return FALSE;
9083   do
9084     {
9085       tmpnode = _gtk_rbtree_find_count (tmptree, indices[i] + 1);
9086       ++i;
9087       if (tmpnode == NULL)
9088         {
9089           *tree = NULL;
9090           *node = NULL;
9091           return FALSE;
9092         }
9093       if (i >= depth)
9094         {
9095           *tree = tmptree;
9096           *node = tmpnode;
9097           return FALSE;
9098         }
9099       *tree = tmptree;
9100       *node = tmpnode;
9101       tmptree = tmpnode->children;
9102       if (tmptree == NULL)
9103         return TRUE;
9104     }
9105   while (1);
9106 }
9107
9108 static gboolean
9109 gtk_tree_view_is_expander_column (GtkTreeView       *tree_view,
9110                                   GtkTreeViewColumn *column)
9111 {
9112   GList *list;
9113
9114   if (GTK_TREE_VIEW_FLAG_SET (tree_view, GTK_TREE_VIEW_IS_LIST))
9115     return FALSE;
9116
9117   if (tree_view->priv->expander_column != NULL)
9118     {
9119       if (tree_view->priv->expander_column == column)
9120         return TRUE;
9121       return FALSE;
9122     }
9123   else
9124     {
9125       for (list = tree_view->priv->columns;
9126            list;
9127            list = list->next)
9128         if (((GtkTreeViewColumn *)list->data)->visible)
9129           break;
9130       if (list && list->data == column)
9131         return TRUE;
9132     }
9133   return FALSE;
9134 }
9135
9136 static void
9137 gtk_tree_view_add_move_binding (GtkBindingSet  *binding_set,
9138                                 guint           keyval,
9139                                 guint           modmask,
9140                                 gboolean        add_shifted_binding,
9141                                 GtkMovementStep step,
9142                                 gint            count)
9143 {
9144
9145   gtk_binding_entry_add_signal (binding_set, keyval, modmask,
9146                                 "move-cursor", 2,
9147                                 G_TYPE_ENUM, step,
9148                                 G_TYPE_INT, count);
9149
9150   if (add_shifted_binding)
9151     gtk_binding_entry_add_signal (binding_set, keyval, GDK_SHIFT_MASK,
9152                                   "move-cursor", 2,
9153                                   G_TYPE_ENUM, step,
9154                                   G_TYPE_INT, count);
9155
9156   if ((modmask & GDK_CONTROL_MASK) == GDK_CONTROL_MASK)
9157    return;
9158
9159   gtk_binding_entry_add_signal (binding_set, keyval, GDK_CONTROL_MASK | GDK_SHIFT_MASK,
9160                                 "move-cursor", 2,
9161                                 G_TYPE_ENUM, step,
9162                                 G_TYPE_INT, count);
9163
9164   gtk_binding_entry_add_signal (binding_set, keyval, GDK_CONTROL_MASK,
9165                                 "move-cursor", 2,
9166                                 G_TYPE_ENUM, step,
9167                                 G_TYPE_INT, count);
9168 }
9169
9170 static gint
9171 gtk_tree_view_unref_tree_helper (GtkTreeModel *model,
9172                                  GtkTreeIter  *iter,
9173                                  GtkRBTree    *tree,
9174                                  GtkRBNode    *node)
9175 {
9176   gint retval = FALSE;
9177   do
9178     {
9179       g_return_val_if_fail (node != NULL, FALSE);
9180
9181       if (node->children)
9182         {
9183           GtkTreeIter child;
9184           GtkRBTree *new_tree;
9185           GtkRBNode *new_node;
9186
9187           new_tree = node->children;
9188           new_node = new_tree->root;
9189
9190           while (new_node && new_node->left != new_tree->nil)
9191             new_node = new_node->left;
9192
9193           if (!gtk_tree_model_iter_children (model, &child, iter))
9194             return FALSE;
9195
9196           retval = retval || gtk_tree_view_unref_tree_helper (model, &child, new_tree, new_node);
9197         }
9198
9199       if (GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_SELECTED))
9200         retval = TRUE;
9201       gtk_tree_model_unref_node (model, iter);
9202       node = _gtk_rbtree_next (tree, node);
9203     }
9204   while (gtk_tree_model_iter_next (model, iter));
9205
9206   return retval;
9207 }
9208
9209 static gint
9210 gtk_tree_view_unref_and_check_selection_tree (GtkTreeView *tree_view,
9211                                               GtkRBTree   *tree)
9212 {
9213   GtkTreeIter iter;
9214   GtkTreePath *path;
9215   GtkRBNode *node;
9216   gint retval;
9217
9218   if (!tree)
9219     return FALSE;
9220
9221   node = tree->root;
9222   while (node && node->left != tree->nil)
9223     node = node->left;
9224
9225   g_return_val_if_fail (node != NULL, FALSE);
9226   path = _gtk_tree_view_find_path (tree_view, tree, node);
9227   gtk_tree_model_get_iter (GTK_TREE_MODEL (tree_view->priv->model),
9228                            &iter, path);
9229   retval = gtk_tree_view_unref_tree_helper (GTK_TREE_MODEL (tree_view->priv->model), &iter, tree, node);
9230   gtk_tree_path_free (path);
9231
9232   return retval;
9233 }
9234
9235 static void
9236 gtk_tree_view_set_column_drag_info (GtkTreeView       *tree_view,
9237                                     GtkTreeViewColumn *column)
9238 {
9239   GtkTreeViewColumn *left_column;
9240   GtkTreeViewColumn *cur_column = NULL;
9241   GtkTreeViewColumnReorder *reorder;
9242   gboolean rtl;
9243   GList *tmp_list;
9244   gint left;
9245
9246   /* We want to precalculate the motion list such that we know what column slots
9247    * are available.
9248    */
9249   left_column = NULL;
9250   rtl = (gtk_widget_get_direction (GTK_WIDGET (tree_view)) == GTK_TEXT_DIR_RTL);
9251
9252   /* First, identify all possible drop spots */
9253   if (rtl)
9254     tmp_list = g_list_last (tree_view->priv->columns);
9255   else
9256     tmp_list = g_list_first (tree_view->priv->columns);
9257
9258   while (tmp_list)
9259     {
9260       cur_column = GTK_TREE_VIEW_COLUMN (tmp_list->data);
9261       tmp_list = rtl?g_list_previous (tmp_list):g_list_next (tmp_list);
9262
9263       if (cur_column->visible == FALSE)
9264         continue;
9265
9266       /* If it's not the column moving and func tells us to skip over the column, we continue. */
9267       if (left_column != column && cur_column != column &&
9268           tree_view->priv->column_drop_func &&
9269           ! tree_view->priv->column_drop_func (tree_view, column, left_column, cur_column, tree_view->priv->column_drop_func_data))
9270         {
9271           left_column = cur_column;
9272           continue;
9273         }
9274       reorder = g_slice_new0 (GtkTreeViewColumnReorder);
9275       reorder->left_column = left_column;
9276       left_column = reorder->right_column = cur_column;
9277
9278       tree_view->priv->column_drag_info = g_list_append (tree_view->priv->column_drag_info, reorder);
9279     }
9280
9281   /* Add the last one */
9282   if (tree_view->priv->column_drop_func == NULL ||
9283       ((left_column != column) &&
9284        tree_view->priv->column_drop_func (tree_view, column, left_column, NULL, tree_view->priv->column_drop_func_data)))
9285     {
9286       reorder = g_slice_new0 (GtkTreeViewColumnReorder);
9287       reorder->left_column = left_column;
9288       reorder->right_column = NULL;
9289       tree_view->priv->column_drag_info = g_list_append (tree_view->priv->column_drag_info, reorder);
9290     }
9291
9292   /* We quickly check to see if it even makes sense to reorder columns. */
9293   /* If there is nothing that can be moved, then we return */
9294
9295   if (tree_view->priv->column_drag_info == NULL)
9296     return;
9297
9298   /* We know there are always 2 slots possbile, as you can always return column. */
9299   /* If that's all there is, return */
9300   if (tree_view->priv->column_drag_info->next == NULL ||
9301       (tree_view->priv->column_drag_info->next->next == NULL &&
9302        ((GtkTreeViewColumnReorder *)tree_view->priv->column_drag_info->data)->right_column == column &&
9303        ((GtkTreeViewColumnReorder *)tree_view->priv->column_drag_info->next->data)->left_column == column))
9304     {
9305       for (tmp_list = tree_view->priv->column_drag_info; tmp_list; tmp_list = tmp_list->next)
9306         g_slice_free (GtkTreeViewColumnReorder, tmp_list->data);
9307       g_list_free (tree_view->priv->column_drag_info);
9308       tree_view->priv->column_drag_info = NULL;
9309       return;
9310     }
9311   /* We fill in the ranges for the columns, now that we've isolated them */
9312   left = - TREE_VIEW_COLUMN_DRAG_DEAD_MULTIPLIER (tree_view);
9313
9314   for (tmp_list = tree_view->priv->column_drag_info; tmp_list; tmp_list = tmp_list->next)
9315     {
9316       reorder = (GtkTreeViewColumnReorder *) tmp_list->data;
9317
9318       reorder->left_align = left;
9319       if (tmp_list->next != NULL)
9320         {
9321           GtkAllocation right_allocation, left_allocation;
9322
9323           g_assert (tmp_list->next->data);
9324
9325           gtk_widget_get_allocation (reorder->right_column->button, &right_allocation);
9326           gtk_widget_get_allocation (((GtkTreeViewColumnReorder *)tmp_list->next->data)->left_column->button, &left_allocation);
9327           left = reorder->right_align = (right_allocation.x + right_allocation.width + left_allocation.x) / 2;
9328         }
9329       else
9330         {
9331           gint width;
9332
9333           gdk_drawable_get_size (tree_view->priv->header_window, &width, NULL);
9334           reorder->right_align = width + TREE_VIEW_COLUMN_DRAG_DEAD_MULTIPLIER (tree_view);
9335         }
9336     }
9337 }
9338
9339 void
9340 _gtk_tree_view_column_start_drag (GtkTreeView       *tree_view,
9341                                   GtkTreeViewColumn *column,
9342                                   GdkDevice         *device)
9343 {
9344   GdkEvent *send_event;
9345   GtkAllocation allocation;
9346   GtkAllocation button_allocation;
9347   gint x, y, width, height;
9348   GdkScreen *screen = gtk_widget_get_screen (GTK_WIDGET (tree_view));
9349   GdkDisplay *display = gdk_screen_get_display (screen);
9350
9351   g_return_if_fail (tree_view->priv->column_drag_info == NULL);
9352   g_return_if_fail (tree_view->priv->cur_reorder == NULL);
9353
9354   gtk_tree_view_set_column_drag_info (tree_view, column);
9355
9356   if (tree_view->priv->column_drag_info == NULL)
9357     return;
9358
9359   if (tree_view->priv->drag_window == NULL)
9360     {
9361       GdkWindowAttr attributes;
9362       guint attributes_mask;
9363
9364       gtk_widget_get_allocation (column->button, &button_allocation);
9365
9366       attributes.window_type = GDK_WINDOW_CHILD;
9367       attributes.wclass = GDK_INPUT_OUTPUT;
9368       attributes.x = button_allocation.x;
9369       attributes.y = 0;
9370       attributes.width = button_allocation.width;
9371       attributes.height = button_allocation.height;
9372       attributes.visual = gtk_widget_get_visual (GTK_WIDGET (tree_view));
9373       attributes.colormap = gtk_widget_get_colormap (GTK_WIDGET (tree_view));
9374       attributes.event_mask = GDK_VISIBILITY_NOTIFY_MASK | GDK_EXPOSURE_MASK | GDK_POINTER_MOTION_MASK;
9375       attributes_mask = GDK_WA_X | GDK_WA_Y | GDK_WA_VISUAL | GDK_WA_COLORMAP;
9376
9377       tree_view->priv->drag_window = gdk_window_new (tree_view->priv->bin_window,
9378                                                      &attributes,
9379                                                      attributes_mask);
9380       gdk_window_set_user_data (tree_view->priv->drag_window, GTK_WIDGET (tree_view));
9381     }
9382
9383   gdk_display_pointer_ungrab (display, GDK_CURRENT_TIME);
9384   gdk_display_keyboard_ungrab (display, GDK_CURRENT_TIME);
9385
9386   gtk_grab_remove (column->button);
9387
9388   send_event = gdk_event_new (GDK_LEAVE_NOTIFY);
9389   send_event->crossing.send_event = TRUE;
9390   send_event->crossing.window = g_object_ref (GTK_BUTTON (column->button)->event_window);
9391   send_event->crossing.subwindow = NULL;
9392   send_event->crossing.detail = GDK_NOTIFY_ANCESTOR;
9393   send_event->crossing.time = GDK_CURRENT_TIME;
9394   gdk_event_set_device (send_event, device);
9395
9396   gtk_propagate_event (column->button, send_event);
9397   gdk_event_free (send_event);
9398
9399   send_event = gdk_event_new (GDK_BUTTON_RELEASE);
9400   send_event->button.window = g_object_ref (gdk_screen_get_root_window (screen));
9401   send_event->button.send_event = TRUE;
9402   send_event->button.time = GDK_CURRENT_TIME;
9403   send_event->button.x = -1;
9404   send_event->button.y = -1;
9405   send_event->button.axes = NULL;
9406   send_event->button.state = 0;
9407   send_event->button.button = 1;
9408   send_event->button.x_root = 0;
9409   send_event->button.y_root = 0;
9410   gdk_event_set_device (send_event, device);
9411
9412   gtk_propagate_event (column->button, send_event);
9413   gdk_event_free (send_event);
9414
9415   /* Kids, don't try this at home */
9416   g_object_ref (column->button);
9417   gtk_container_remove (GTK_CONTAINER (tree_view), column->button);
9418   gtk_widget_set_parent_window (column->button, tree_view->priv->drag_window);
9419   gtk_widget_set_parent (column->button, GTK_WIDGET (tree_view));
9420   g_object_unref (column->button);
9421
9422   gtk_widget_get_allocation (column->button, &button_allocation);
9423   tree_view->priv->drag_column_x = button_allocation.x;
9424   allocation = button_allocation;
9425   allocation.x = 0;
9426   gtk_widget_size_allocate (column->button, &allocation);
9427   gtk_widget_set_parent_window (column->button, tree_view->priv->drag_window);
9428
9429   tree_view->priv->drag_column = column;
9430   gdk_window_show (tree_view->priv->drag_window);
9431
9432   gdk_window_get_origin (tree_view->priv->header_window, &x, &y);
9433   gdk_drawable_get_size (tree_view->priv->header_window, &width, &height);
9434
9435   gtk_widget_grab_focus (GTK_WIDGET (tree_view));
9436   while (gtk_events_pending ())
9437     gtk_main_iteration ();
9438
9439   GTK_TREE_VIEW_SET_FLAG (tree_view, GTK_TREE_VIEW_IN_COLUMN_DRAG);
9440   gdk_pointer_grab (tree_view->priv->drag_window,
9441                     FALSE,
9442                     GDK_POINTER_MOTION_MASK|GDK_BUTTON_RELEASE_MASK,
9443                     NULL, NULL, GDK_CURRENT_TIME);
9444   gdk_keyboard_grab (tree_view->priv->drag_window,
9445                      FALSE,
9446                      GDK_CURRENT_TIME);
9447 }
9448
9449 static void
9450 gtk_tree_view_queue_draw_arrow (GtkTreeView        *tree_view,
9451                                 GtkRBTree          *tree,
9452                                 GtkRBNode          *node,
9453                                 const GdkRectangle *clip_rect)
9454 {
9455   GtkAllocation allocation;
9456   GdkRectangle rect;
9457
9458   if (!gtk_widget_get_realized (GTK_WIDGET (tree_view)))
9459     return;
9460
9461   gtk_widget_get_allocation (GTK_WIDGET (tree_view), &allocation);
9462   rect.x = 0;
9463   rect.width = MAX (tree_view->priv->expander_size, MAX (tree_view->priv->width, allocation.width));
9464
9465   rect.y = BACKGROUND_FIRST_PIXEL (tree_view, tree, node);
9466   rect.height = ROW_HEIGHT (tree_view, BACKGROUND_HEIGHT (node));
9467
9468   if (clip_rect)
9469     {
9470       GdkRectangle new_rect;
9471
9472       gdk_rectangle_intersect (clip_rect, &rect, &new_rect);
9473
9474       gdk_window_invalidate_rect (tree_view->priv->bin_window, &new_rect, TRUE);
9475     }
9476   else
9477     {
9478       gdk_window_invalidate_rect (tree_view->priv->bin_window, &rect, TRUE);
9479     }
9480 }
9481
9482 void
9483 _gtk_tree_view_queue_draw_node (GtkTreeView        *tree_view,
9484                                 GtkRBTree          *tree,
9485                                 GtkRBNode          *node,
9486                                 const GdkRectangle *clip_rect)
9487 {
9488   GtkAllocation allocation;
9489   GdkRectangle rect;
9490
9491   if (!gtk_widget_get_realized (GTK_WIDGET (tree_view)))
9492     return;
9493
9494   gtk_widget_get_allocation (GTK_WIDGET (tree_view), &allocation);
9495   rect.x = 0;
9496   rect.width = MAX (tree_view->priv->width, allocation.width);
9497
9498   rect.y = BACKGROUND_FIRST_PIXEL (tree_view, tree, node);
9499   rect.height = ROW_HEIGHT (tree_view, BACKGROUND_HEIGHT (node));
9500
9501   if (clip_rect)
9502     {
9503       GdkRectangle new_rect;
9504
9505       gdk_rectangle_intersect (clip_rect, &rect, &new_rect);
9506
9507       gdk_window_invalidate_rect (tree_view->priv->bin_window, &new_rect, TRUE);
9508     }
9509   else
9510     {
9511       gdk_window_invalidate_rect (tree_view->priv->bin_window, &rect, TRUE);
9512     }
9513 }
9514
9515 static void
9516 gtk_tree_view_queue_draw_path (GtkTreeView        *tree_view,
9517                                GtkTreePath        *path,
9518                                const GdkRectangle *clip_rect)
9519 {
9520   GtkRBTree *tree = NULL;
9521   GtkRBNode *node = NULL;
9522
9523   _gtk_tree_view_find_node (tree_view, path, &tree, &node);
9524
9525   if (tree)
9526     _gtk_tree_view_queue_draw_node (tree_view, tree, node, clip_rect);
9527 }
9528
9529 /* x and y are the mouse position
9530  */
9531 static void
9532 gtk_tree_view_draw_arrow (GtkTreeView *tree_view,
9533                           GtkRBTree   *tree,
9534                           GtkRBNode   *node,
9535                           /* in bin_window coordinates */
9536                           gint         x,
9537                           gint         y)
9538 {
9539   GdkRectangle area;
9540   GtkStateType state;
9541   GtkWidget *widget;
9542   gint x_offset = 0;
9543   gint x2;
9544   gint vertical_separator;
9545   gint expander_size;
9546   GtkExpanderStyle expander_style;
9547
9548   widget = GTK_WIDGET (tree_view);
9549
9550   gtk_widget_style_get (widget,
9551                         "vertical-separator", &vertical_separator,
9552                         NULL);
9553   expander_size = tree_view->priv->expander_size - EXPANDER_EXTRA_PADDING;
9554
9555   if (! GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_PARENT))
9556     return;
9557
9558   gtk_tree_view_get_arrow_xrange (tree_view, tree, &x_offset, &x2);
9559
9560   area.x = x_offset;
9561   area.y = CELL_FIRST_PIXEL (tree_view, tree, node, vertical_separator);
9562   area.width = expander_size + 2;
9563   area.height = MAX (CELL_HEIGHT (node, vertical_separator), (expander_size - vertical_separator));
9564
9565   if (gtk_widget_get_state (widget) == GTK_STATE_INSENSITIVE)
9566     {
9567       state = GTK_STATE_INSENSITIVE;
9568     }
9569   else if (node == tree_view->priv->button_pressed_node)
9570     {
9571       if (x >= area.x && x <= (area.x + area.width) &&
9572           y >= area.y && y <= (area.y + area.height))
9573         state = GTK_STATE_ACTIVE;
9574       else
9575         state = GTK_STATE_NORMAL;
9576     }
9577   else
9578     {
9579       if (node == tree_view->priv->prelight_node &&
9580           GTK_TREE_VIEW_FLAG_SET (tree_view, GTK_TREE_VIEW_ARROW_PRELIT))
9581         state = GTK_STATE_PRELIGHT;
9582       else
9583         state = GTK_STATE_NORMAL;
9584     }
9585
9586   if (GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_SEMI_EXPANDED))
9587     expander_style = GTK_EXPANDER_SEMI_EXPANDED;
9588   else if (GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_SEMI_COLLAPSED))
9589     expander_style = GTK_EXPANDER_SEMI_COLLAPSED;
9590   else if (node->children != NULL)
9591     expander_style = GTK_EXPANDER_EXPANDED;
9592   else
9593     expander_style = GTK_EXPANDER_COLLAPSED;
9594
9595   gtk_paint_expander (gtk_widget_get_style (widget),
9596                       tree_view->priv->bin_window,
9597                       state,
9598                       &area,
9599                       widget,
9600                       "treeview",
9601                       area.x + area.width / 2,
9602                       area.y + area.height / 2,
9603                       expander_style);
9604 }
9605
9606 static void
9607 gtk_tree_view_focus_to_cursor (GtkTreeView *tree_view)
9608
9609 {
9610   GtkTreePath *cursor_path;
9611
9612   if ((tree_view->priv->tree == NULL) ||
9613       (! gtk_widget_get_realized (GTK_WIDGET (tree_view))))
9614     return;
9615
9616   cursor_path = NULL;
9617   if (tree_view->priv->cursor)
9618     cursor_path = gtk_tree_row_reference_get_path (tree_view->priv->cursor);
9619
9620   if (cursor_path == NULL)
9621     {
9622       /* Consult the selection before defaulting to the
9623        * first focusable element
9624        */
9625       GList *selected_rows;
9626       GtkTreeModel *model;
9627       GtkTreeSelection *selection;
9628
9629       selection = gtk_tree_view_get_selection (tree_view);
9630       selected_rows = gtk_tree_selection_get_selected_rows (selection, &model);
9631
9632       if (selected_rows)
9633         {
9634           cursor_path = gtk_tree_path_copy((const GtkTreePath *)(selected_rows->data));
9635           g_list_foreach (selected_rows, (GFunc)gtk_tree_path_free, NULL);
9636           g_list_free (selected_rows);
9637         }
9638       else
9639         {
9640           cursor_path = gtk_tree_path_new_first ();
9641           search_first_focusable_path (tree_view, &cursor_path,
9642                                        TRUE, NULL, NULL);
9643         }
9644
9645       gtk_tree_row_reference_free (tree_view->priv->cursor);
9646       tree_view->priv->cursor = NULL;
9647
9648       if (cursor_path)
9649         {
9650           if (tree_view->priv->selection->type == GTK_SELECTION_MULTIPLE)
9651             gtk_tree_view_real_set_cursor (tree_view, cursor_path, FALSE, FALSE);
9652           else
9653             gtk_tree_view_real_set_cursor (tree_view, cursor_path, TRUE, FALSE);
9654         }
9655     }
9656
9657   if (cursor_path)
9658     {
9659       GTK_TREE_VIEW_SET_FLAG (tree_view, GTK_TREE_VIEW_DRAW_KEYFOCUS);
9660
9661       gtk_tree_view_queue_draw_path (tree_view, cursor_path, NULL);
9662       gtk_tree_path_free (cursor_path);
9663
9664       if (tree_view->priv->focus_column == NULL)
9665         {
9666           GList *list;
9667           for (list = tree_view->priv->columns; list; list = list->next)
9668             {
9669               if (GTK_TREE_VIEW_COLUMN (list->data)->visible)
9670                 {
9671                   tree_view->priv->focus_column = GTK_TREE_VIEW_COLUMN (list->data);
9672                   break;
9673                 }
9674             }
9675         }
9676     }
9677 }
9678
9679 static void
9680 gtk_tree_view_move_cursor_up_down (GtkTreeView *tree_view,
9681                                    gint         count)
9682 {
9683   gint selection_count;
9684   GtkRBTree *cursor_tree = NULL;
9685   GtkRBNode *cursor_node = NULL;
9686   GtkRBTree *new_cursor_tree = NULL;
9687   GtkRBNode *new_cursor_node = NULL;
9688   GtkTreePath *cursor_path = NULL;
9689   gboolean grab_focus = TRUE;
9690   gboolean selectable;
9691
9692   if (! gtk_widget_has_focus (GTK_WIDGET (tree_view)))
9693     return;
9694
9695   cursor_path = NULL;
9696   if (!gtk_tree_row_reference_valid (tree_view->priv->cursor))
9697     /* FIXME: we lost the cursor; should we get the first? */
9698     return;
9699
9700   cursor_path = gtk_tree_row_reference_get_path (tree_view->priv->cursor);
9701   _gtk_tree_view_find_node (tree_view, cursor_path,
9702                             &cursor_tree, &cursor_node);
9703
9704   if (cursor_tree == NULL)
9705     /* FIXME: we lost the cursor; should we get the first? */
9706     return;
9707
9708   selection_count = gtk_tree_selection_count_selected_rows (tree_view->priv->selection);
9709   selectable = _gtk_tree_selection_row_is_selectable (tree_view->priv->selection,
9710                                                       cursor_node,
9711                                                       cursor_path);
9712
9713   if (selection_count == 0
9714       && tree_view->priv->selection->type != GTK_SELECTION_NONE
9715       && !tree_view->priv->ctrl_pressed
9716       && selectable)
9717     {
9718       /* Don't move the cursor, but just select the current node */
9719       new_cursor_tree = cursor_tree;
9720       new_cursor_node = cursor_node;
9721     }
9722   else
9723     {
9724       if (count == -1)
9725         _gtk_rbtree_prev_full (cursor_tree, cursor_node,
9726                                &new_cursor_tree, &new_cursor_node);
9727       else
9728         _gtk_rbtree_next_full (cursor_tree, cursor_node,
9729                                &new_cursor_tree, &new_cursor_node);
9730     }
9731
9732   gtk_tree_path_free (cursor_path);
9733
9734   if (new_cursor_node)
9735     {
9736       cursor_path = _gtk_tree_view_find_path (tree_view,
9737                                               new_cursor_tree, new_cursor_node);
9738
9739       search_first_focusable_path (tree_view, &cursor_path,
9740                                    (count != -1),
9741                                    &new_cursor_tree,
9742                                    &new_cursor_node);
9743
9744       if (cursor_path)
9745         gtk_tree_path_free (cursor_path);
9746     }
9747
9748   /*
9749    * If the list has only one item and multi-selection is set then select
9750    * the row (if not yet selected).
9751    */
9752   if (tree_view->priv->selection->type == GTK_SELECTION_MULTIPLE &&
9753       new_cursor_node == NULL)
9754     {
9755       if (count == -1)
9756         _gtk_rbtree_next_full (cursor_tree, cursor_node,
9757                                &new_cursor_tree, &new_cursor_node);
9758       else
9759         _gtk_rbtree_prev_full (cursor_tree, cursor_node,
9760                                &new_cursor_tree, &new_cursor_node);
9761
9762       if (new_cursor_node == NULL
9763           && !GTK_RBNODE_FLAG_SET (cursor_node, GTK_RBNODE_IS_SELECTED))
9764         {
9765           new_cursor_node = cursor_node;
9766           new_cursor_tree = cursor_tree;
9767         }
9768       else
9769         {
9770           new_cursor_node = NULL;
9771         }
9772     }
9773
9774   if (new_cursor_node)
9775     {
9776       cursor_path = _gtk_tree_view_find_path (tree_view, new_cursor_tree, new_cursor_node);
9777       gtk_tree_view_real_set_cursor (tree_view, cursor_path, TRUE, TRUE);
9778       gtk_tree_path_free (cursor_path);
9779     }
9780   else
9781     {
9782       gtk_tree_view_clamp_node_visible (tree_view, cursor_tree, cursor_node);
9783
9784       if (!tree_view->priv->shift_pressed)
9785         {
9786           if (! gtk_widget_keynav_failed (GTK_WIDGET (tree_view),
9787                                           count < 0 ?
9788                                           GTK_DIR_UP : GTK_DIR_DOWN))
9789             {
9790               GtkWidget *toplevel = gtk_widget_get_toplevel (GTK_WIDGET (tree_view));
9791
9792               if (toplevel)
9793                 gtk_widget_child_focus (toplevel,
9794                                         count < 0 ?
9795                                         GTK_DIR_TAB_BACKWARD :
9796                                         GTK_DIR_TAB_FORWARD);
9797
9798               grab_focus = FALSE;
9799             }
9800         }
9801       else
9802         {
9803           gtk_widget_error_bell (GTK_WIDGET (tree_view));
9804         }
9805     }
9806
9807   if (grab_focus)
9808     gtk_widget_grab_focus (GTK_WIDGET (tree_view));
9809 }
9810
9811 static void
9812 gtk_tree_view_move_cursor_page_up_down (GtkTreeView *tree_view,
9813                                         gint         count)
9814 {
9815   GtkRBTree *cursor_tree = NULL;
9816   GtkRBNode *cursor_node = NULL;
9817   GtkTreePath *old_cursor_path = NULL;
9818   GtkTreePath *cursor_path = NULL;
9819   GtkRBTree *start_cursor_tree = NULL;
9820   GtkRBNode *start_cursor_node = NULL;
9821   gint y;
9822   gint window_y;
9823   gint vertical_separator;
9824
9825   if (!gtk_widget_has_focus (GTK_WIDGET (tree_view)))
9826     return;
9827
9828   if (gtk_tree_row_reference_valid (tree_view->priv->cursor))
9829     old_cursor_path = gtk_tree_row_reference_get_path (tree_view->priv->cursor);
9830   else
9831     /* This is sorta weird.  Focus in should give us a cursor */
9832     return;
9833
9834   gtk_widget_style_get (GTK_WIDGET (tree_view), "vertical-separator", &vertical_separator, NULL);
9835   _gtk_tree_view_find_node (tree_view, old_cursor_path,
9836                             &cursor_tree, &cursor_node);
9837
9838   if (cursor_tree == NULL)
9839     {
9840       /* FIXME: we lost the cursor.  Should we try to get one? */
9841       gtk_tree_path_free (old_cursor_path);
9842       return;
9843     }
9844   g_return_if_fail (cursor_node != NULL);
9845
9846   y = _gtk_rbtree_node_find_offset (cursor_tree, cursor_node);
9847   window_y = RBTREE_Y_TO_TREE_WINDOW_Y (tree_view, y);
9848   y += tree_view->priv->cursor_offset;
9849   y += count * (int)tree_view->priv->vadjustment->page_increment;
9850   y = CLAMP (y, (gint)tree_view->priv->vadjustment->lower,  (gint)tree_view->priv->vadjustment->upper - vertical_separator);
9851
9852   if (y >= tree_view->priv->height)
9853     y = tree_view->priv->height - 1;
9854
9855   tree_view->priv->cursor_offset =
9856     _gtk_rbtree_find_offset (tree_view->priv->tree, y,
9857                              &cursor_tree, &cursor_node);
9858
9859   if (cursor_tree == NULL)
9860     {
9861       /* FIXME: we lost the cursor.  Should we try to get one? */
9862       gtk_tree_path_free (old_cursor_path);
9863       return;
9864     }
9865
9866   if (tree_view->priv->cursor_offset > BACKGROUND_HEIGHT (cursor_node))
9867     {
9868       _gtk_rbtree_next_full (cursor_tree, cursor_node,
9869                              &cursor_tree, &cursor_node);
9870       tree_view->priv->cursor_offset -= BACKGROUND_HEIGHT (cursor_node);
9871     }
9872
9873   y -= tree_view->priv->cursor_offset;
9874   cursor_path = _gtk_tree_view_find_path (tree_view, cursor_tree, cursor_node);
9875
9876   start_cursor_tree = cursor_tree;
9877   start_cursor_node = cursor_node;
9878
9879   if (! search_first_focusable_path (tree_view, &cursor_path,
9880                                      (count != -1),
9881                                      &cursor_tree, &cursor_node))
9882     {
9883       /* It looks like we reached the end of the view without finding
9884        * a focusable row.  We will step backwards to find the last
9885        * focusable row.
9886        */
9887       cursor_tree = start_cursor_tree;
9888       cursor_node = start_cursor_node;
9889       cursor_path = _gtk_tree_view_find_path (tree_view, cursor_tree, cursor_node);
9890
9891       search_first_focusable_path (tree_view, &cursor_path,
9892                                    (count == -1),
9893                                    &cursor_tree, &cursor_node);
9894     }
9895
9896   if (!cursor_path)
9897     goto cleanup;
9898
9899   /* update y */
9900   y = _gtk_rbtree_node_find_offset (cursor_tree, cursor_node);
9901
9902   gtk_tree_view_real_set_cursor (tree_view, cursor_path, TRUE, FALSE);
9903
9904   y -= window_y;
9905   gtk_tree_view_scroll_to_point (tree_view, -1, y);
9906   gtk_tree_view_clamp_node_visible (tree_view, cursor_tree, cursor_node);
9907   _gtk_tree_view_queue_draw_node (tree_view, cursor_tree, cursor_node, NULL);
9908
9909   if (!gtk_tree_path_compare (old_cursor_path, cursor_path))
9910     gtk_widget_error_bell (GTK_WIDGET (tree_view));
9911
9912   gtk_widget_grab_focus (GTK_WIDGET (tree_view));
9913
9914 cleanup:
9915   gtk_tree_path_free (old_cursor_path);
9916   gtk_tree_path_free (cursor_path);
9917 }
9918
9919 static void
9920 gtk_tree_view_move_cursor_left_right (GtkTreeView *tree_view,
9921                                       gint         count)
9922 {
9923   GtkRBTree *cursor_tree = NULL;
9924   GtkRBNode *cursor_node = NULL;
9925   GtkTreePath *cursor_path = NULL;
9926   GtkTreeViewColumn *column;
9927   GtkTreeIter iter;
9928   GList *list;
9929   gboolean found_column = FALSE;
9930   gboolean rtl;
9931
9932   rtl = (gtk_widget_get_direction (GTK_WIDGET (tree_view)) == GTK_TEXT_DIR_RTL);
9933
9934   if (!gtk_widget_has_focus (GTK_WIDGET (tree_view)))
9935     return;
9936
9937   if (gtk_tree_row_reference_valid (tree_view->priv->cursor))
9938     cursor_path = gtk_tree_row_reference_get_path (tree_view->priv->cursor);
9939   else
9940     return;
9941
9942   _gtk_tree_view_find_node (tree_view, cursor_path, &cursor_tree, &cursor_node);
9943   if (cursor_tree == NULL)
9944     return;
9945   if (gtk_tree_model_get_iter (tree_view->priv->model, &iter, cursor_path) == FALSE)
9946     {
9947       gtk_tree_path_free (cursor_path);
9948       return;
9949     }
9950   gtk_tree_path_free (cursor_path);
9951
9952   list = rtl ? g_list_last (tree_view->priv->columns) : g_list_first (tree_view->priv->columns);
9953   if (tree_view->priv->focus_column)
9954     {
9955       for (; list; list = (rtl ? list->prev : list->next))
9956         {
9957           if (list->data == tree_view->priv->focus_column)
9958             break;
9959         }
9960     }
9961
9962   while (list)
9963     {
9964       gboolean left, right;
9965
9966       column = list->data;
9967       if (column->visible == FALSE)
9968         goto loop_end;
9969
9970       gtk_tree_view_column_cell_set_cell_data (column,
9971                                                tree_view->priv->model,
9972                                                &iter,
9973                                                GTK_RBNODE_FLAG_SET (cursor_node, GTK_RBNODE_IS_PARENT),
9974                                                cursor_node->children?TRUE:FALSE);
9975
9976       if (rtl)
9977         {
9978           right = list->prev ? TRUE : FALSE;
9979           left = list->next ? TRUE : FALSE;
9980         }
9981       else
9982         {
9983           left = list->prev ? TRUE : FALSE;
9984           right = list->next ? TRUE : FALSE;
9985         }
9986
9987       if (_gtk_tree_view_column_cell_focus (column, count, left, right))
9988         {
9989           tree_view->priv->focus_column = column;
9990           found_column = TRUE;
9991           break;
9992         }
9993     loop_end:
9994       if (count == 1)
9995         list = rtl ? list->prev : list->next;
9996       else
9997         list = rtl ? list->next : list->prev;
9998     }
9999
10000   if (found_column)
10001     {
10002       if (!gtk_tree_view_has_special_cell (tree_view))
10003         _gtk_tree_view_queue_draw_node (tree_view,
10004                                         cursor_tree,
10005                                         cursor_node,
10006                                         NULL);
10007       g_signal_emit (tree_view, tree_view_signals[CURSOR_CHANGED], 0);
10008       gtk_widget_grab_focus (GTK_WIDGET (tree_view));
10009     }
10010   else
10011     {
10012       gtk_widget_error_bell (GTK_WIDGET (tree_view));
10013     }
10014
10015   gtk_tree_view_clamp_column_visible (tree_view,
10016                                       tree_view->priv->focus_column, TRUE);
10017 }
10018
10019 static void
10020 gtk_tree_view_move_cursor_start_end (GtkTreeView *tree_view,
10021                                      gint         count)
10022 {
10023   GtkRBTree *cursor_tree;
10024   GtkRBNode *cursor_node;
10025   GtkTreePath *path;
10026   GtkTreePath *old_path;
10027
10028   if (!gtk_widget_has_focus (GTK_WIDGET (tree_view)))
10029     return;
10030
10031   g_return_if_fail (tree_view->priv->tree != NULL);
10032
10033   gtk_tree_view_get_cursor (tree_view, &old_path, NULL);
10034
10035   cursor_tree = tree_view->priv->tree;
10036   cursor_node = cursor_tree->root;
10037
10038   if (count == -1)
10039     {
10040       while (cursor_node && cursor_node->left != cursor_tree->nil)
10041         cursor_node = cursor_node->left;
10042
10043       /* Now go forward to find the first focusable row. */
10044       path = _gtk_tree_view_find_path (tree_view, cursor_tree, cursor_node);
10045       search_first_focusable_path (tree_view, &path,
10046                                    TRUE, &cursor_tree, &cursor_node);
10047     }
10048   else
10049     {
10050       do
10051         {
10052           while (cursor_node && cursor_node->right != cursor_tree->nil)
10053             cursor_node = cursor_node->right;
10054           if (cursor_node->children == NULL)
10055             break;
10056
10057           cursor_tree = cursor_node->children;
10058           cursor_node = cursor_tree->root;
10059         }
10060       while (1);
10061
10062       /* Now go backwards to find last focusable row. */
10063       path = _gtk_tree_view_find_path (tree_view, cursor_tree, cursor_node);
10064       search_first_focusable_path (tree_view, &path,
10065                                    FALSE, &cursor_tree, &cursor_node);
10066     }
10067
10068   if (!path)
10069     goto cleanup;
10070
10071   if (gtk_tree_path_compare (old_path, path))
10072     {
10073       gtk_tree_view_real_set_cursor (tree_view, path, TRUE, TRUE);
10074       gtk_widget_grab_focus (GTK_WIDGET (tree_view));
10075     }
10076   else
10077     {
10078       gtk_widget_error_bell (GTK_WIDGET (tree_view));
10079     }
10080
10081 cleanup:
10082   gtk_tree_path_free (old_path);
10083   gtk_tree_path_free (path);
10084 }
10085
10086 static gboolean
10087 gtk_tree_view_real_select_all (GtkTreeView *tree_view)
10088 {
10089   if (!gtk_widget_has_focus (GTK_WIDGET (tree_view)))
10090     return FALSE;
10091
10092   if (tree_view->priv->selection->type != GTK_SELECTION_MULTIPLE)
10093     return FALSE;
10094
10095   gtk_tree_selection_select_all (tree_view->priv->selection);
10096
10097   return TRUE;
10098 }
10099
10100 static gboolean
10101 gtk_tree_view_real_unselect_all (GtkTreeView *tree_view)
10102 {
10103   if (!gtk_widget_has_focus (GTK_WIDGET (tree_view)))
10104     return FALSE;
10105
10106   if (tree_view->priv->selection->type != GTK_SELECTION_MULTIPLE)
10107     return FALSE;
10108
10109   gtk_tree_selection_unselect_all (tree_view->priv->selection);
10110
10111   return TRUE;
10112 }
10113
10114 static gboolean
10115 gtk_tree_view_real_select_cursor_row (GtkTreeView *tree_view,
10116                                       gboolean     start_editing)
10117 {
10118   GtkRBTree *new_tree = NULL;
10119   GtkRBNode *new_node = NULL;
10120   GtkRBTree *cursor_tree = NULL;
10121   GtkRBNode *cursor_node = NULL;
10122   GtkTreePath *cursor_path = NULL;
10123   GtkTreeSelectMode mode = 0;
10124
10125   if (!gtk_widget_has_focus (GTK_WIDGET (tree_view)))
10126     return FALSE;
10127
10128   if (tree_view->priv->cursor)
10129     cursor_path = gtk_tree_row_reference_get_path (tree_view->priv->cursor);
10130
10131   if (cursor_path == NULL)
10132     return FALSE;
10133
10134   _gtk_tree_view_find_node (tree_view, cursor_path,
10135                             &cursor_tree, &cursor_node);
10136
10137   if (cursor_tree == NULL)
10138     {
10139       gtk_tree_path_free (cursor_path);
10140       return FALSE;
10141     }
10142
10143   if (!tree_view->priv->shift_pressed && start_editing &&
10144       tree_view->priv->focus_column)
10145     {
10146       if (gtk_tree_view_start_editing (tree_view, cursor_path))
10147         {
10148           gtk_tree_path_free (cursor_path);
10149           return TRUE;
10150         }
10151     }
10152
10153   if (tree_view->priv->ctrl_pressed)
10154     mode |= GTK_TREE_SELECT_MODE_TOGGLE;
10155   if (tree_view->priv->shift_pressed)
10156     mode |= GTK_TREE_SELECT_MODE_EXTEND;
10157
10158   _gtk_tree_selection_internal_select_node (tree_view->priv->selection,
10159                                             cursor_node,
10160                                             cursor_tree,
10161                                             cursor_path,
10162                                             mode,
10163                                             FALSE);
10164
10165   /* We bail out if the original (tree, node) don't exist anymore after
10166    * handling the selection-changed callback.  We do return TRUE because
10167    * the key press has been handled at this point.
10168    */
10169   _gtk_tree_view_find_node (tree_view, cursor_path, &new_tree, &new_node);
10170
10171   if (cursor_tree != new_tree || cursor_node != new_node)
10172     return FALSE;
10173
10174   gtk_tree_view_clamp_node_visible (tree_view, cursor_tree, cursor_node);
10175
10176   gtk_widget_grab_focus (GTK_WIDGET (tree_view));
10177   _gtk_tree_view_queue_draw_node (tree_view, cursor_tree, cursor_node, NULL);
10178
10179   if (!tree_view->priv->shift_pressed)
10180     gtk_tree_view_row_activated (tree_view, cursor_path,
10181                                  tree_view->priv->focus_column);
10182
10183   gtk_tree_path_free (cursor_path);
10184
10185   return TRUE;
10186 }
10187
10188 static gboolean
10189 gtk_tree_view_real_toggle_cursor_row (GtkTreeView *tree_view)
10190 {
10191   GtkRBTree *new_tree = NULL;
10192   GtkRBNode *new_node = NULL;
10193   GtkRBTree *cursor_tree = NULL;
10194   GtkRBNode *cursor_node = NULL;
10195   GtkTreePath *cursor_path = NULL;
10196
10197   if (!gtk_widget_has_focus (GTK_WIDGET (tree_view)))
10198     return FALSE;
10199
10200   cursor_path = NULL;
10201   if (tree_view->priv->cursor)
10202     cursor_path = gtk_tree_row_reference_get_path (tree_view->priv->cursor);
10203
10204   if (cursor_path == NULL)
10205     return FALSE;
10206
10207   _gtk_tree_view_find_node (tree_view, cursor_path,
10208                             &cursor_tree, &cursor_node);
10209   if (cursor_tree == NULL)
10210     {
10211       gtk_tree_path_free (cursor_path);
10212       return FALSE;
10213     }
10214
10215   _gtk_tree_selection_internal_select_node (tree_view->priv->selection,
10216                                             cursor_node,
10217                                             cursor_tree,
10218                                             cursor_path,
10219                                             GTK_TREE_SELECT_MODE_TOGGLE,
10220                                             FALSE);
10221
10222   /* We bail out if the original (tree, node) don't exist anymore after
10223    * handling the selection-changed callback.  We do return TRUE because
10224    * the key press has been handled at this point.
10225    */
10226   _gtk_tree_view_find_node (tree_view, cursor_path, &new_tree, &new_node);
10227
10228   if (cursor_tree != new_tree || cursor_node != new_node)
10229     return FALSE;
10230
10231   gtk_tree_view_clamp_node_visible (tree_view, cursor_tree, cursor_node);
10232
10233   gtk_widget_grab_focus (GTK_WIDGET (tree_view));
10234   gtk_tree_view_queue_draw_path (tree_view, cursor_path, NULL);
10235   gtk_tree_path_free (cursor_path);
10236
10237   return TRUE;
10238 }
10239
10240 static gboolean
10241 gtk_tree_view_real_expand_collapse_cursor_row (GtkTreeView *tree_view,
10242                                                gboolean     logical,
10243                                                gboolean     expand,
10244                                                gboolean     open_all)
10245 {
10246   GtkTreePath *cursor_path = NULL;
10247   GtkRBTree *tree;
10248   GtkRBNode *node;
10249
10250   if (!gtk_widget_has_focus (GTK_WIDGET (tree_view)))
10251     return FALSE;
10252
10253   cursor_path = NULL;
10254   if (tree_view->priv->cursor)
10255     cursor_path = gtk_tree_row_reference_get_path (tree_view->priv->cursor);
10256
10257   if (cursor_path == NULL)
10258     return FALSE;
10259
10260   if (_gtk_tree_view_find_node (tree_view, cursor_path, &tree, &node))
10261     return FALSE;
10262
10263   /* Don't handle the event if we aren't an expander */
10264   if (!((node->flags & GTK_RBNODE_IS_PARENT) == GTK_RBNODE_IS_PARENT))
10265     return FALSE;
10266
10267   if (!logical
10268       && gtk_widget_get_direction (GTK_WIDGET (tree_view)) == GTK_TEXT_DIR_RTL)
10269     expand = !expand;
10270
10271   if (expand)
10272     gtk_tree_view_real_expand_row (tree_view, cursor_path, tree, node, open_all, TRUE);
10273   else
10274     gtk_tree_view_real_collapse_row (tree_view, cursor_path, tree, node, TRUE);
10275
10276   gtk_tree_path_free (cursor_path);
10277
10278   return TRUE;
10279 }
10280
10281 static gboolean
10282 gtk_tree_view_real_select_cursor_parent (GtkTreeView *tree_view)
10283 {
10284   GtkRBTree *cursor_tree = NULL;
10285   GtkRBNode *cursor_node = NULL;
10286   GtkTreePath *cursor_path = NULL;
10287   GdkModifierType state;
10288
10289   if (!gtk_widget_has_focus (GTK_WIDGET (tree_view)))
10290     goto out;
10291
10292   cursor_path = NULL;
10293   if (tree_view->priv->cursor)
10294     cursor_path = gtk_tree_row_reference_get_path (tree_view->priv->cursor);
10295
10296   if (cursor_path == NULL)
10297     goto out;
10298
10299   _gtk_tree_view_find_node (tree_view, cursor_path,
10300                             &cursor_tree, &cursor_node);
10301   if (cursor_tree == NULL)
10302     {
10303       gtk_tree_path_free (cursor_path);
10304       goto out;
10305     }
10306
10307   if (cursor_tree->parent_node)
10308     {
10309       gtk_tree_view_queue_draw_path (tree_view, cursor_path, NULL);
10310       cursor_node = cursor_tree->parent_node;
10311       cursor_tree = cursor_tree->parent_tree;
10312
10313       gtk_tree_path_up (cursor_path);
10314
10315       if (gtk_get_current_event_state (&state))
10316         {
10317           if ((state & GDK_CONTROL_MASK) == GDK_CONTROL_MASK)
10318             tree_view->priv->ctrl_pressed = TRUE;
10319         }
10320
10321       gtk_tree_view_real_set_cursor (tree_view, cursor_path, TRUE, FALSE);
10322       gtk_tree_view_clamp_node_visible (tree_view, cursor_tree, cursor_node);
10323
10324       gtk_widget_grab_focus (GTK_WIDGET (tree_view));
10325       gtk_tree_view_queue_draw_path (tree_view, cursor_path, NULL);
10326       gtk_tree_path_free (cursor_path);
10327
10328       tree_view->priv->ctrl_pressed = FALSE;
10329
10330       return TRUE;
10331     }
10332
10333  out:
10334
10335   tree_view->priv->search_entry_avoid_unhandled_binding = TRUE;
10336   return FALSE;
10337 }
10338
10339 static gboolean
10340 gtk_tree_view_search_entry_flush_timeout (GtkTreeView *tree_view)
10341 {
10342   gtk_tree_view_search_dialog_hide (tree_view->priv->search_window, tree_view, NULL);
10343   tree_view->priv->typeselect_flush_timeout = 0;
10344
10345   return FALSE;
10346 }
10347
10348 /* Cut and paste from gtkwindow.c */
10349 static void
10350 send_focus_change (GtkWidget *widget,
10351                    GdkDevice *device,
10352                    gboolean   in)
10353 {
10354   GdkDeviceManager *device_manager;
10355   GList *devices, *d;
10356
10357   device_manager = gdk_display_get_device_manager (gtk_widget_get_display (widget));
10358   devices = gdk_device_manager_list_devices (device_manager, GDK_DEVICE_TYPE_MASTER);
10359   devices = g_list_concat (devices, gdk_device_manager_list_devices (device_manager, GDK_DEVICE_TYPE_SLAVE));
10360   devices = g_list_concat (devices, gdk_device_manager_list_devices (device_manager, GDK_DEVICE_TYPE_FLOATING));
10361
10362   for (d = devices; d; d = d->next)
10363     {
10364       GdkDevice *dev = d->data;
10365       GdkEvent *fevent;
10366       GdkWindow *window;
10367
10368       if (dev->source != GDK_SOURCE_KEYBOARD)
10369         continue;
10370
10371       window = gtk_widget_get_window (widget);
10372
10373       /* Skip non-master keyboards that haven't
10374        * selected for events from this window
10375        */
10376       if (gdk_device_get_device_type (dev) != GDK_DEVICE_TYPE_MASTER &&
10377           !gdk_window_get_device_events (window, dev))
10378         continue;
10379
10380       fevent = gdk_event_new (GDK_FOCUS_CHANGE);
10381
10382       fevent->focus_change.type = GDK_FOCUS_CHANGE;
10383       fevent->focus_change.window = g_object_ref (window);
10384       fevent->focus_change.in = in;
10385       gdk_event_set_device (fevent, device);
10386
10387       gtk_widget_send_focus_change (widget, fevent);
10388
10389       gdk_event_free (fevent);
10390     }
10391 }
10392
10393 static void
10394 gtk_tree_view_ensure_interactive_directory (GtkTreeView *tree_view)
10395 {
10396   GtkWidget *frame, *vbox, *toplevel;
10397   GdkScreen *screen;
10398
10399   if (tree_view->priv->search_custom_entry_set)
10400     return;
10401
10402   toplevel = gtk_widget_get_toplevel (GTK_WIDGET (tree_view));
10403   screen = gtk_widget_get_screen (GTK_WIDGET (tree_view));
10404
10405    if (tree_view->priv->search_window != NULL)
10406      {
10407        if (gtk_window_has_group (GTK_WINDOW (toplevel)))
10408          gtk_window_group_add_window (gtk_window_get_group (GTK_WINDOW (toplevel)),
10409                                       GTK_WINDOW (tree_view->priv->search_window));
10410        else if (gtk_window_has_group (GTK_WINDOW (tree_view->priv->search_window)))
10411          gtk_window_group_remove_window (gtk_window_get_group (GTK_WINDOW (tree_view->priv->search_window)),
10412                                          GTK_WINDOW (tree_view->priv->search_window));
10413
10414        gtk_window_set_screen (GTK_WINDOW (tree_view->priv->search_window), screen);
10415
10416        return;
10417      }
10418
10419   tree_view->priv->search_window = gtk_window_new (GTK_WINDOW_POPUP);
10420   gtk_window_set_screen (GTK_WINDOW (tree_view->priv->search_window), screen);
10421
10422   if (gtk_window_has_group (GTK_WINDOW (toplevel)))
10423     gtk_window_group_add_window (gtk_window_get_group (GTK_WINDOW (toplevel)),
10424                                  GTK_WINDOW (tree_view->priv->search_window));
10425
10426   gtk_window_set_type_hint (GTK_WINDOW (tree_view->priv->search_window),
10427                             GDK_WINDOW_TYPE_HINT_UTILITY);
10428   gtk_window_set_modal (GTK_WINDOW (tree_view->priv->search_window), TRUE);
10429   g_signal_connect (tree_view->priv->search_window, "delete-event",
10430                     G_CALLBACK (gtk_tree_view_search_delete_event),
10431                     tree_view);
10432   g_signal_connect (tree_view->priv->search_window, "key-press-event",
10433                     G_CALLBACK (gtk_tree_view_search_key_press_event),
10434                     tree_view);
10435   g_signal_connect (tree_view->priv->search_window, "button-press-event",
10436                     G_CALLBACK (gtk_tree_view_search_button_press_event),
10437                     tree_view);
10438   g_signal_connect (tree_view->priv->search_window, "scroll-event",
10439                     G_CALLBACK (gtk_tree_view_search_scroll_event),
10440                     tree_view);
10441
10442   frame = gtk_frame_new (NULL);
10443   gtk_frame_set_shadow_type (GTK_FRAME (frame), GTK_SHADOW_ETCHED_IN);
10444   gtk_widget_show (frame);
10445   gtk_container_add (GTK_CONTAINER (tree_view->priv->search_window), frame);
10446
10447   vbox = gtk_vbox_new (FALSE, 0);
10448   gtk_widget_show (vbox);
10449   gtk_container_add (GTK_CONTAINER (frame), vbox);
10450   gtk_container_set_border_width (GTK_CONTAINER (vbox), 3);
10451
10452   /* add entry */
10453   tree_view->priv->search_entry = gtk_entry_new ();
10454   gtk_widget_show (tree_view->priv->search_entry);
10455   g_signal_connect (tree_view->priv->search_entry, "populate-popup",
10456                     G_CALLBACK (gtk_tree_view_search_disable_popdown),
10457                     tree_view);
10458   g_signal_connect (tree_view->priv->search_entry,
10459                     "activate", G_CALLBACK (gtk_tree_view_search_activate),
10460                     tree_view);
10461   g_signal_connect (GTK_ENTRY (tree_view->priv->search_entry)->im_context,
10462                     "preedit-changed",
10463                     G_CALLBACK (gtk_tree_view_search_preedit_changed),
10464                     tree_view);
10465   gtk_container_add (GTK_CONTAINER (vbox),
10466                      tree_view->priv->search_entry);
10467
10468   gtk_widget_realize (tree_view->priv->search_entry);
10469 }
10470
10471 /* Pops up the interactive search entry.  If keybinding is TRUE then the user
10472  * started this by typing the start_interactive_search keybinding.  Otherwise, it came from
10473  */
10474 static gboolean
10475 gtk_tree_view_real_start_interactive_search (GtkTreeView *tree_view,
10476                                              GdkDevice   *device,
10477                                              gboolean     keybinding)
10478 {
10479   /* We only start interactive search if we have focus or the columns
10480    * have focus.  If one of our children have focus, we don't want to
10481    * start the search.
10482    */
10483   GList *list;
10484   gboolean found_focus = FALSE;
10485   GtkWidgetClass *entry_parent_class;
10486
10487   if (!tree_view->priv->enable_search && !keybinding)
10488     return FALSE;
10489
10490   if (tree_view->priv->search_custom_entry_set)
10491     return FALSE;
10492
10493   if (tree_view->priv->search_window != NULL &&
10494       gtk_widget_get_visible (tree_view->priv->search_window))
10495     return TRUE;
10496
10497   for (list = tree_view->priv->columns; list; list = list->next)
10498     {
10499       GtkTreeViewColumn *column;
10500
10501       column = list->data;
10502       if (! column->visible)
10503         continue;
10504
10505       if (gtk_widget_has_focus (column->button))
10506         {
10507           found_focus = TRUE;
10508           break;
10509         }
10510     }
10511
10512   if (gtk_widget_has_focus (GTK_WIDGET (tree_view)))
10513     found_focus = TRUE;
10514
10515   if (!found_focus)
10516     return FALSE;
10517
10518   if (tree_view->priv->search_column < 0)
10519     return FALSE;
10520
10521   gtk_tree_view_ensure_interactive_directory (tree_view);
10522
10523   if (keybinding)
10524     gtk_entry_set_text (GTK_ENTRY (tree_view->priv->search_entry), "");
10525
10526   /* done, show it */
10527   tree_view->priv->search_position_func (tree_view, tree_view->priv->search_window, tree_view->priv->search_position_user_data);
10528   gtk_widget_show (tree_view->priv->search_window);
10529   if (tree_view->priv->search_entry_changed_id == 0)
10530     {
10531       tree_view->priv->search_entry_changed_id =
10532         g_signal_connect (tree_view->priv->search_entry, "changed",
10533                           G_CALLBACK (gtk_tree_view_search_init),
10534                           tree_view);
10535     }
10536
10537   tree_view->priv->typeselect_flush_timeout =
10538     gdk_threads_add_timeout (GTK_TREE_VIEW_SEARCH_DIALOG_TIMEOUT,
10539                    (GSourceFunc) gtk_tree_view_search_entry_flush_timeout,
10540                    tree_view);
10541
10542   /* Grab focus will select all the text.  We don't want that to happen, so we
10543    * call the parent instance and bypass the selection change.  This is probably
10544    * really non-kosher. */
10545   entry_parent_class = g_type_class_peek_parent (GTK_ENTRY_GET_CLASS (tree_view->priv->search_entry));
10546   (entry_parent_class->grab_focus) (tree_view->priv->search_entry);
10547
10548   /* send focus-in event */
10549   send_focus_change (tree_view->priv->search_entry, device, TRUE);
10550
10551   /* search first matching iter */
10552   gtk_tree_view_search_init (tree_view->priv->search_entry, tree_view);
10553
10554   return TRUE;
10555 }
10556
10557 static gboolean
10558 gtk_tree_view_start_interactive_search (GtkTreeView *tree_view)
10559 {
10560   return gtk_tree_view_real_start_interactive_search (tree_view,
10561                                                       gtk_get_current_event_device (),
10562                                                       TRUE);
10563 }
10564
10565 /* this function returns the new width of the column being resized given
10566  * the column and x position of the cursor; the x cursor position is passed
10567  * in as a pointer and automagicly corrected if it's beyond min/max limits
10568  */
10569 static gint
10570 gtk_tree_view_new_column_width (GtkTreeView *tree_view,
10571                                 gint       i,
10572                                 gint      *x)
10573 {
10574   GtkAllocation allocation;
10575   GtkTreeViewColumn *column;
10576   GtkRequisition button_req;
10577   gint width;
10578   gboolean rtl;
10579
10580   /* first translate the x position from widget->window
10581    * to clist->clist_window
10582    */
10583   rtl = (gtk_widget_get_direction (GTK_WIDGET (tree_view)) == GTK_TEXT_DIR_RTL);
10584   column = g_list_nth (tree_view->priv->columns, i)->data;
10585   gtk_widget_get_allocation (column->button, &allocation);
10586   width = rtl ? (allocation.x + allocation.width - *x) : (*x - allocation.x);
10587
10588   /* Clamp down the value */
10589   if (column->min_width == -1)
10590     {
10591       gtk_size_request_get_size (GTK_SIZE_REQUEST (column->button), &button_req, NULL);
10592       width = MAX (button_req.width, width);
10593     }
10594   else
10595     width = MAX (column->min_width,
10596                  width);
10597   if (column->max_width != -1)
10598     width = MIN (width, column->max_width);
10599
10600   *x = rtl ? (allocation.x + allocation.width - width) : (allocation.x + width);
10601
10602   return width;
10603 }
10604
10605
10606 /* FIXME this adjust_allocation is a big cut-and-paste from
10607  * GtkCList, needs to be some "official" way to do this
10608  * factored out.
10609  */
10610 typedef struct
10611 {
10612   GdkWindow *window;
10613   int dx;
10614   int dy;
10615 } ScrollData;
10616
10617 /* The window to which widget->window is relative */
10618 #define ALLOCATION_WINDOW(widget)               \
10619    (!gtk_widget_get_has_window (widget) ?                   \
10620     gtk_widget_get_window (widget) :                        \
10621     gdk_window_get_parent (gtk_widget_get_window (widget)))
10622
10623 static void
10624 adjust_allocation_recurse (GtkWidget *widget,
10625                            gpointer   data)
10626 {
10627   GtkAllocation allocation;
10628   ScrollData *scroll_data = data;
10629
10630   /* Need to really size allocate instead of just poking
10631    * into widget->allocation if the widget is not realized.
10632    * FIXME someone figure out why this was.
10633    */
10634   gtk_widget_get_allocation (widget, &allocation);
10635   if (!gtk_widget_get_realized (widget))
10636     {
10637       if (gtk_widget_get_visible (widget))
10638         {
10639           GdkRectangle tmp_rectangle = allocation;
10640           tmp_rectangle.x += scroll_data->dx;
10641           tmp_rectangle.y += scroll_data->dy;
10642
10643           gtk_widget_size_allocate (widget, &tmp_rectangle);
10644         }
10645     }
10646   else
10647     {
10648       if (ALLOCATION_WINDOW (widget) == scroll_data->window)
10649         {
10650           allocation.x += scroll_data->dx;
10651           allocation.y += scroll_data->dy;
10652           gtk_widget_set_allocation (widget, &allocation);
10653
10654           if (GTK_IS_CONTAINER (widget))
10655             gtk_container_forall (GTK_CONTAINER (widget),
10656                                   adjust_allocation_recurse,
10657                                   data);
10658         }
10659     }
10660 }
10661
10662 static void
10663 adjust_allocation (GtkWidget *widget,
10664                    int        dx,
10665                    int        dy)
10666 {
10667   ScrollData scroll_data;
10668
10669   if (gtk_widget_get_realized (widget))
10670     scroll_data.window = ALLOCATION_WINDOW (widget);
10671   else
10672     scroll_data.window = NULL;
10673
10674   scroll_data.dx = dx;
10675   scroll_data.dy = dy;
10676
10677   adjust_allocation_recurse (widget, &scroll_data);
10678 }
10679
10680 /* Callbacks */
10681 static void
10682 gtk_tree_view_adjustment_changed (GtkAdjustment *adjustment,
10683                                   GtkTreeView   *tree_view)
10684 {
10685   if (gtk_widget_get_realized (GTK_WIDGET (tree_view)))
10686     {
10687       gint dy;
10688
10689       gdk_window_move (tree_view->priv->bin_window,
10690                        - tree_view->priv->hadjustment->value,
10691                        TREE_VIEW_HEADER_HEIGHT (tree_view));
10692       gdk_window_move (tree_view->priv->header_window,
10693                        - tree_view->priv->hadjustment->value,
10694                        0);
10695       dy = tree_view->priv->dy - (int) tree_view->priv->vadjustment->value;
10696       if (dy)
10697         {
10698           update_prelight (tree_view,
10699                            tree_view->priv->event_last_x,
10700                            tree_view->priv->event_last_y - dy);
10701
10702           if (tree_view->priv->edited_column &&
10703               GTK_IS_WIDGET (tree_view->priv->edited_column->editable_widget))
10704             {
10705               GList *list;
10706               GtkWidget *widget;
10707               GtkTreeViewChild *child = NULL;
10708
10709               widget = GTK_WIDGET (tree_view->priv->edited_column->editable_widget);
10710               adjust_allocation (widget, 0, dy);
10711
10712               for (list = tree_view->priv->children; list; list = list->next)
10713                 {
10714                   child = (GtkTreeViewChild *)list->data;
10715                   if (child->widget == widget)
10716                     {
10717                       child->y += dy;
10718                       break;
10719                     }
10720                 }
10721             }
10722         }
10723       gdk_window_scroll (tree_view->priv->bin_window, 0, dy);
10724
10725       if (tree_view->priv->dy != (int) tree_view->priv->vadjustment->value)
10726         {
10727           /* update our dy and top_row */
10728           tree_view->priv->dy = (int) tree_view->priv->vadjustment->value;
10729
10730           if (!tree_view->priv->in_top_row_to_dy)
10731             gtk_tree_view_dy_to_top_row (tree_view);
10732         }
10733
10734       gdk_window_process_updates (tree_view->priv->header_window, TRUE);
10735       gdk_window_process_updates (tree_view->priv->bin_window, TRUE);
10736     }
10737 }
10738
10739 \f
10740
10741 /* Public methods
10742  */
10743
10744 /**
10745  * gtk_tree_view_new:
10746  *
10747  * Creates a new #GtkTreeView widget.
10748  *
10749  * Return value: A newly created #GtkTreeView widget.
10750  **/
10751 GtkWidget *
10752 gtk_tree_view_new (void)
10753 {
10754   return g_object_new (GTK_TYPE_TREE_VIEW, NULL);
10755 }
10756
10757 /**
10758  * gtk_tree_view_new_with_model:
10759  * @model: the model.
10760  *
10761  * Creates a new #GtkTreeView widget with the model initialized to @model.
10762  *
10763  * Return value: A newly created #GtkTreeView widget.
10764  **/
10765 GtkWidget *
10766 gtk_tree_view_new_with_model (GtkTreeModel *model)
10767 {
10768   return g_object_new (GTK_TYPE_TREE_VIEW, "model", model, NULL);
10769 }
10770
10771 /* Public Accessors
10772  */
10773
10774 /**
10775  * gtk_tree_view_get_model:
10776  * @tree_view: a #GtkTreeView
10777  *
10778  * Returns the model the #GtkTreeView is based on.  Returns %NULL if the
10779  * model is unset.
10780  *
10781  * Return value: (transfer none): A #GtkTreeModel, or %NULL if none is currently being used.
10782  **/
10783 GtkTreeModel *
10784 gtk_tree_view_get_model (GtkTreeView *tree_view)
10785 {
10786   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), NULL);
10787
10788   return tree_view->priv->model;
10789 }
10790
10791 /**
10792  * gtk_tree_view_set_model:
10793  * @tree_view: A #GtkTreeNode.
10794  * @model: (allow-none): The model.
10795  *
10796  * Sets the model for a #GtkTreeView.  If the @tree_view already has a model
10797  * set, it will remove it before setting the new model.  If @model is %NULL,
10798  * then it will unset the old model.
10799  **/
10800 void
10801 gtk_tree_view_set_model (GtkTreeView  *tree_view,
10802                          GtkTreeModel *model)
10803 {
10804   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
10805   g_return_if_fail (model == NULL || GTK_IS_TREE_MODEL (model));
10806
10807   if (model == tree_view->priv->model)
10808     return;
10809
10810   if (tree_view->priv->scroll_to_path)
10811     {
10812       gtk_tree_row_reference_free (tree_view->priv->scroll_to_path);
10813       tree_view->priv->scroll_to_path = NULL;
10814     }
10815
10816   if (tree_view->priv->model)
10817     {
10818       GList *tmplist = tree_view->priv->columns;
10819
10820       gtk_tree_view_unref_and_check_selection_tree (tree_view, tree_view->priv->tree);
10821       gtk_tree_view_stop_editing (tree_view, TRUE);
10822
10823       remove_expand_collapse_timeout (tree_view);
10824
10825       g_signal_handlers_disconnect_by_func (tree_view->priv->model,
10826                                             gtk_tree_view_row_changed,
10827                                             tree_view);
10828       g_signal_handlers_disconnect_by_func (tree_view->priv->model,
10829                                             gtk_tree_view_row_inserted,
10830                                             tree_view);
10831       g_signal_handlers_disconnect_by_func (tree_view->priv->model,
10832                                             gtk_tree_view_row_has_child_toggled,
10833                                             tree_view);
10834       g_signal_handlers_disconnect_by_func (tree_view->priv->model,
10835                                             gtk_tree_view_row_deleted,
10836                                             tree_view);
10837       g_signal_handlers_disconnect_by_func (tree_view->priv->model,
10838                                             gtk_tree_view_rows_reordered,
10839                                             tree_view);
10840
10841       for (; tmplist; tmplist = tmplist->next)
10842         _gtk_tree_view_column_unset_model (tmplist->data,
10843                                            tree_view->priv->model);
10844
10845       if (tree_view->priv->tree)
10846         gtk_tree_view_free_rbtree (tree_view);
10847
10848       gtk_tree_row_reference_free (tree_view->priv->drag_dest_row);
10849       tree_view->priv->drag_dest_row = NULL;
10850       gtk_tree_row_reference_free (tree_view->priv->cursor);
10851       tree_view->priv->cursor = NULL;
10852       gtk_tree_row_reference_free (tree_view->priv->anchor);
10853       tree_view->priv->anchor = NULL;
10854       gtk_tree_row_reference_free (tree_view->priv->top_row);
10855       tree_view->priv->top_row = NULL;
10856       gtk_tree_row_reference_free (tree_view->priv->scroll_to_path);
10857       tree_view->priv->scroll_to_path = NULL;
10858
10859       tree_view->priv->scroll_to_column = NULL;
10860
10861       g_object_unref (tree_view->priv->model);
10862
10863       tree_view->priv->search_column = -1;
10864       tree_view->priv->fixed_height_check = 0;
10865       tree_view->priv->fixed_height = -1;
10866       tree_view->priv->dy = tree_view->priv->top_row_dy = 0;
10867       tree_view->priv->last_button_x = -1;
10868       tree_view->priv->last_button_y = -1;
10869     }
10870
10871   tree_view->priv->model = model;
10872
10873   if (tree_view->priv->model)
10874     {
10875       gint i;
10876       GtkTreePath *path;
10877       GtkTreeIter iter;
10878       GtkTreeModelFlags flags;
10879
10880       if (tree_view->priv->search_column == -1)
10881         {
10882           for (i = 0; i < gtk_tree_model_get_n_columns (model); i++)
10883             {
10884               GType type = gtk_tree_model_get_column_type (model, i);
10885
10886               if (g_value_type_transformable (type, G_TYPE_STRING))
10887                 {
10888                   tree_view->priv->search_column = i;
10889                   break;
10890                 }
10891             }
10892         }
10893
10894       g_object_ref (tree_view->priv->model);
10895       g_signal_connect (tree_view->priv->model,
10896                         "row-changed",
10897                         G_CALLBACK (gtk_tree_view_row_changed),
10898                         tree_view);
10899       g_signal_connect (tree_view->priv->model,
10900                         "row-inserted",
10901                         G_CALLBACK (gtk_tree_view_row_inserted),
10902                         tree_view);
10903       g_signal_connect (tree_view->priv->model,
10904                         "row-has-child-toggled",
10905                         G_CALLBACK (gtk_tree_view_row_has_child_toggled),
10906                         tree_view);
10907       g_signal_connect (tree_view->priv->model,
10908                         "row-deleted",
10909                         G_CALLBACK (gtk_tree_view_row_deleted),
10910                         tree_view);
10911       g_signal_connect (tree_view->priv->model,
10912                         "rows-reordered",
10913                         G_CALLBACK (gtk_tree_view_rows_reordered),
10914                         tree_view);
10915
10916       flags = gtk_tree_model_get_flags (tree_view->priv->model);
10917       if ((flags & GTK_TREE_MODEL_LIST_ONLY) == GTK_TREE_MODEL_LIST_ONLY)
10918         GTK_TREE_VIEW_SET_FLAG (tree_view, GTK_TREE_VIEW_IS_LIST);
10919       else
10920         GTK_TREE_VIEW_UNSET_FLAG (tree_view, GTK_TREE_VIEW_IS_LIST);
10921
10922       path = gtk_tree_path_new_first ();
10923       if (gtk_tree_model_get_iter (tree_view->priv->model, &iter, path))
10924         {
10925           tree_view->priv->tree = _gtk_rbtree_new ();
10926           gtk_tree_view_build_tree (tree_view, tree_view->priv->tree, &iter, 1, FALSE);
10927         }
10928       gtk_tree_path_free (path);
10929
10930       /*  FIXME: do I need to do this? gtk_tree_view_create_buttons (tree_view); */
10931       install_presize_handler (tree_view);
10932     }
10933
10934   g_object_notify (G_OBJECT (tree_view), "model");
10935
10936   if (tree_view->priv->selection)
10937   _gtk_tree_selection_emit_changed (tree_view->priv->selection);
10938
10939   if (gtk_widget_get_realized (GTK_WIDGET (tree_view)))
10940     gtk_widget_queue_resize (GTK_WIDGET (tree_view));
10941 }
10942
10943 /**
10944  * gtk_tree_view_get_selection:
10945  * @tree_view: A #GtkTreeView.
10946  *
10947  * Gets the #GtkTreeSelection associated with @tree_view.
10948  *
10949  * Return value: (transfer none): A #GtkTreeSelection object.
10950  **/
10951 GtkTreeSelection *
10952 gtk_tree_view_get_selection (GtkTreeView *tree_view)
10953 {
10954   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), NULL);
10955
10956   return tree_view->priv->selection;
10957 }
10958
10959 /**
10960  * gtk_tree_view_get_hadjustment:
10961  * @tree_view: A #GtkTreeView
10962  *
10963  * Gets the #GtkAdjustment currently being used for the horizontal aspect.
10964  *
10965  * Return value: A #GtkAdjustment object, or %NULL if none is currently being
10966  * used.
10967  **/
10968 GtkAdjustment *
10969 gtk_tree_view_get_hadjustment (GtkTreeView *tree_view)
10970 {
10971   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), NULL);
10972
10973   if (tree_view->priv->hadjustment == NULL)
10974     gtk_tree_view_set_hadjustment (tree_view, NULL);
10975
10976   return tree_view->priv->hadjustment;
10977 }
10978
10979 /**
10980  * gtk_tree_view_set_hadjustment:
10981  * @tree_view: A #GtkTreeView
10982  * @adjustment: (allow-none): The #GtkAdjustment to set, or %NULL
10983  *
10984  * Sets the #GtkAdjustment for the current horizontal aspect.
10985  **/
10986 void
10987 gtk_tree_view_set_hadjustment (GtkTreeView   *tree_view,
10988                                GtkAdjustment *adjustment)
10989 {
10990   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
10991
10992   gtk_tree_view_set_adjustments (tree_view,
10993                                  adjustment,
10994                                  tree_view->priv->vadjustment);
10995
10996   g_object_notify (G_OBJECT (tree_view), "hadjustment");
10997 }
10998
10999 /**
11000  * gtk_tree_view_get_vadjustment:
11001  * @tree_view: A #GtkTreeView
11002  *
11003  * Gets the #GtkAdjustment currently being used for the vertical aspect.
11004  *
11005  * Return value: A #GtkAdjustment object, or %NULL if none is currently being
11006  * used.
11007  **/
11008 GtkAdjustment *
11009 gtk_tree_view_get_vadjustment (GtkTreeView *tree_view)
11010 {
11011   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), NULL);
11012
11013   if (tree_view->priv->vadjustment == NULL)
11014     gtk_tree_view_set_vadjustment (tree_view, NULL);
11015
11016   return tree_view->priv->vadjustment;
11017 }
11018
11019 /**
11020  * gtk_tree_view_set_vadjustment:
11021  * @tree_view: A #GtkTreeView
11022  * @adjustment: (allow-none): The #GtkAdjustment to set, or %NULL
11023  *
11024  * Sets the #GtkAdjustment for the current vertical aspect.
11025  **/
11026 void
11027 gtk_tree_view_set_vadjustment (GtkTreeView   *tree_view,
11028                                GtkAdjustment *adjustment)
11029 {
11030   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
11031
11032   gtk_tree_view_set_adjustments (tree_view,
11033                                  tree_view->priv->hadjustment,
11034                                  adjustment);
11035
11036   g_object_notify (G_OBJECT (tree_view), "vadjustment");
11037 }
11038
11039 /* Column and header operations */
11040
11041 /**
11042  * gtk_tree_view_get_headers_visible:
11043  * @tree_view: A #GtkTreeView.
11044  *
11045  * Returns %TRUE if the headers on the @tree_view are visible.
11046  *
11047  * Return value: Whether the headers are visible or not.
11048  **/
11049 gboolean
11050 gtk_tree_view_get_headers_visible (GtkTreeView *tree_view)
11051 {
11052   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), FALSE);
11053
11054   return GTK_TREE_VIEW_FLAG_SET (tree_view, GTK_TREE_VIEW_HEADERS_VISIBLE);
11055 }
11056
11057 /**
11058  * gtk_tree_view_set_headers_visible:
11059  * @tree_view: A #GtkTreeView.
11060  * @headers_visible: %TRUE if the headers are visible
11061  *
11062  * Sets the visibility state of the headers.
11063  **/
11064 void
11065 gtk_tree_view_set_headers_visible (GtkTreeView *tree_view,
11066                                    gboolean     headers_visible)
11067 {
11068   gint x, y;
11069   GList *list;
11070   GtkTreeViewColumn *column;
11071   GtkAllocation allocation;
11072
11073   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
11074
11075   headers_visible = !! headers_visible;
11076
11077   if (GTK_TREE_VIEW_FLAG_SET (tree_view, GTK_TREE_VIEW_HEADERS_VISIBLE) == headers_visible)
11078     return;
11079
11080   if (headers_visible)
11081     GTK_TREE_VIEW_SET_FLAG (tree_view, GTK_TREE_VIEW_HEADERS_VISIBLE);
11082   else
11083     GTK_TREE_VIEW_UNSET_FLAG (tree_view, GTK_TREE_VIEW_HEADERS_VISIBLE);
11084
11085   if (gtk_widget_get_realized (GTK_WIDGET (tree_view)))
11086     {
11087       gdk_window_get_position (tree_view->priv->bin_window, &x, &y);
11088       if (headers_visible)
11089         {
11090           gtk_widget_get_allocation (GTK_WIDGET (tree_view), &allocation);
11091           gdk_window_move_resize (tree_view->priv->bin_window,
11092                                   x, y  + TREE_VIEW_HEADER_HEIGHT (tree_view),
11093                                   tree_view->priv->width, allocation.height -  + TREE_VIEW_HEADER_HEIGHT (tree_view));
11094
11095           if (gtk_widget_get_mapped (GTK_WIDGET (tree_view)))
11096             gtk_tree_view_map_buttons (tree_view);
11097         }
11098       else
11099         {
11100           gdk_window_move_resize (tree_view->priv->bin_window, x, y, tree_view->priv->width, tree_view->priv->height);
11101
11102           for (list = tree_view->priv->columns; list; list = list->next)
11103             {
11104               column = list->data;
11105               gtk_widget_unmap (column->button);
11106             }
11107           gdk_window_hide (tree_view->priv->header_window);
11108         }
11109     }
11110
11111   gtk_widget_get_allocation (GTK_WIDGET (tree_view), &allocation);
11112   tree_view->priv->vadjustment->page_size = allocation.height - TREE_VIEW_HEADER_HEIGHT (tree_view);
11113   tree_view->priv->vadjustment->page_increment = (allocation.height - TREE_VIEW_HEADER_HEIGHT (tree_view)) / 2;
11114   tree_view->priv->vadjustment->lower = 0;
11115   tree_view->priv->vadjustment->upper = tree_view->priv->height;
11116   gtk_adjustment_changed (tree_view->priv->vadjustment);
11117
11118   gtk_widget_queue_resize (GTK_WIDGET (tree_view));
11119
11120   g_object_notify (G_OBJECT (tree_view), "headers-visible");
11121 }
11122
11123 /**
11124  * gtk_tree_view_columns_autosize:
11125  * @tree_view: A #GtkTreeView.
11126  *
11127  * Resizes all columns to their optimal width. Only works after the
11128  * treeview has been realized.
11129  **/
11130 void
11131 gtk_tree_view_columns_autosize (GtkTreeView *tree_view)
11132 {
11133   gboolean dirty = FALSE;
11134   GList *list;
11135   GtkTreeViewColumn *column;
11136
11137   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
11138
11139   for (list = tree_view->priv->columns; list; list = list->next)
11140     {
11141       column = list->data;
11142       if (column->column_type == GTK_TREE_VIEW_COLUMN_AUTOSIZE)
11143         continue;
11144       _gtk_tree_view_column_cell_set_dirty (column, TRUE);
11145       dirty = TRUE;
11146     }
11147
11148   if (dirty)
11149     gtk_widget_queue_resize (GTK_WIDGET (tree_view));
11150 }
11151
11152 /**
11153  * gtk_tree_view_set_headers_clickable:
11154  * @tree_view: A #GtkTreeView.
11155  * @setting: %TRUE if the columns are clickable.
11156  *
11157  * Allow the column title buttons to be clicked.
11158  **/
11159 void
11160 gtk_tree_view_set_headers_clickable (GtkTreeView *tree_view,
11161                                      gboolean   setting)
11162 {
11163   GList *list;
11164
11165   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
11166
11167   for (list = tree_view->priv->columns; list; list = list->next)
11168     gtk_tree_view_column_set_clickable (GTK_TREE_VIEW_COLUMN (list->data), setting);
11169
11170   g_object_notify (G_OBJECT (tree_view), "headers-clickable");
11171 }
11172
11173
11174 /**
11175  * gtk_tree_view_get_headers_clickable:
11176  * @tree_view: A #GtkTreeView.
11177  *
11178  * Returns whether all header columns are clickable.
11179  *
11180  * Return value: %TRUE if all header columns are clickable, otherwise %FALSE
11181  *
11182  * Since: 2.10
11183  **/
11184 gboolean
11185 gtk_tree_view_get_headers_clickable (GtkTreeView *tree_view)
11186 {
11187   GList *list;
11188
11189   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), FALSE);
11190
11191   for (list = tree_view->priv->columns; list; list = list->next)
11192     if (!GTK_TREE_VIEW_COLUMN (list->data)->clickable)
11193       return FALSE;
11194
11195   return TRUE;
11196 }
11197
11198 /**
11199  * gtk_tree_view_set_rules_hint
11200  * @tree_view: a #GtkTreeView
11201  * @setting: %TRUE if the tree requires reading across rows
11202  *
11203  * This function tells GTK+ that the user interface for your
11204  * application requires users to read across tree rows and associate
11205  * cells with one another. By default, GTK+ will then render the tree
11206  * with alternating row colors. Do <emphasis>not</emphasis> use it
11207  * just because you prefer the appearance of the ruled tree; that's a
11208  * question for the theme. Some themes will draw tree rows in
11209  * alternating colors even when rules are turned off, and users who
11210  * prefer that appearance all the time can choose those themes. You
11211  * should call this function only as a <emphasis>semantic</emphasis>
11212  * hint to the theme engine that your tree makes alternating colors
11213  * useful from a functional standpoint (since it has lots of columns,
11214  * generally).
11215  *
11216  **/
11217 void
11218 gtk_tree_view_set_rules_hint (GtkTreeView  *tree_view,
11219                               gboolean      setting)
11220 {
11221   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
11222
11223   setting = setting != FALSE;
11224
11225   if (tree_view->priv->has_rules != setting)
11226     {
11227       tree_view->priv->has_rules = setting;
11228       gtk_widget_queue_draw (GTK_WIDGET (tree_view));
11229     }
11230
11231   g_object_notify (G_OBJECT (tree_view), "rules-hint");
11232 }
11233
11234 /**
11235  * gtk_tree_view_get_rules_hint
11236  * @tree_view: a #GtkTreeView
11237  *
11238  * Gets the setting set by gtk_tree_view_set_rules_hint().
11239  *
11240  * Return value: %TRUE if rules are useful for the user of this tree
11241  **/
11242 gboolean
11243 gtk_tree_view_get_rules_hint (GtkTreeView  *tree_view)
11244 {
11245   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), FALSE);
11246
11247   return tree_view->priv->has_rules;
11248 }
11249
11250 /* Public Column functions
11251  */
11252
11253 /**
11254  * gtk_tree_view_append_column:
11255  * @tree_view: A #GtkTreeView.
11256  * @column: The #GtkTreeViewColumn to add.
11257  *
11258  * Appends @column to the list of columns. If @tree_view has "fixed_height"
11259  * mode enabled, then @column must have its "sizing" property set to be
11260  * GTK_TREE_VIEW_COLUMN_FIXED.
11261  *
11262  * Return value: The number of columns in @tree_view after appending.
11263  **/
11264 gint
11265 gtk_tree_view_append_column (GtkTreeView       *tree_view,
11266                              GtkTreeViewColumn *column)
11267 {
11268   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), -1);
11269   g_return_val_if_fail (GTK_IS_TREE_VIEW_COLUMN (column), -1);
11270   g_return_val_if_fail (column->tree_view == NULL, -1);
11271
11272   return gtk_tree_view_insert_column (tree_view, column, -1);
11273 }
11274
11275
11276 /**
11277  * gtk_tree_view_remove_column:
11278  * @tree_view: A #GtkTreeView.
11279  * @column: The #GtkTreeViewColumn to remove.
11280  *
11281  * Removes @column from @tree_view.
11282  *
11283  * Return value: The number of columns in @tree_view after removing.
11284  **/
11285 gint
11286 gtk_tree_view_remove_column (GtkTreeView       *tree_view,
11287                              GtkTreeViewColumn *column)
11288 {
11289   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), -1);
11290   g_return_val_if_fail (GTK_IS_TREE_VIEW_COLUMN (column), -1);
11291   g_return_val_if_fail (column->tree_view == GTK_WIDGET (tree_view), -1);
11292
11293   if (tree_view->priv->focus_column == column)
11294     tree_view->priv->focus_column = NULL;
11295
11296   if (tree_view->priv->edited_column == column)
11297     {
11298       gtk_tree_view_stop_editing (tree_view, TRUE);
11299
11300       /* no need to, but just to be sure ... */
11301       tree_view->priv->edited_column = NULL;
11302     }
11303
11304   if (tree_view->priv->expander_column == column)
11305     tree_view->priv->expander_column = NULL;
11306
11307   g_signal_handlers_disconnect_by_func (column,
11308                                         G_CALLBACK (column_sizing_notify),
11309                                         tree_view);
11310
11311   _gtk_tree_view_column_unset_tree_view (column);
11312
11313   tree_view->priv->columns = g_list_remove (tree_view->priv->columns, column);
11314   tree_view->priv->n_columns--;
11315
11316   if (gtk_widget_get_realized (GTK_WIDGET (tree_view)))
11317     {
11318       GList *list;
11319
11320       _gtk_tree_view_column_unrealize_button (column);
11321       for (list = tree_view->priv->columns; list; list = list->next)
11322         {
11323           GtkTreeViewColumn *tmp_column;
11324
11325           tmp_column = GTK_TREE_VIEW_COLUMN (list->data);
11326           if (tmp_column->visible)
11327             _gtk_tree_view_column_cell_set_dirty (tmp_column, TRUE);
11328         }
11329
11330       if (tree_view->priv->n_columns == 0 &&
11331           gtk_tree_view_get_headers_visible (tree_view))
11332         gdk_window_hide (tree_view->priv->header_window);
11333
11334       gtk_widget_queue_resize (GTK_WIDGET (tree_view));
11335     }
11336
11337   g_object_unref (column);
11338   g_signal_emit (tree_view, tree_view_signals[COLUMNS_CHANGED], 0);
11339
11340   return tree_view->priv->n_columns;
11341 }
11342
11343 /**
11344  * gtk_tree_view_insert_column:
11345  * @tree_view: A #GtkTreeView.
11346  * @column: The #GtkTreeViewColumn to be inserted.
11347  * @position: The position to insert @column in.
11348  *
11349  * This inserts the @column into the @tree_view at @position.  If @position is
11350  * -1, then the column is inserted at the end. If @tree_view has
11351  * "fixed_height" mode enabled, then @column must have its "sizing" property
11352  * set to be GTK_TREE_VIEW_COLUMN_FIXED.
11353  *
11354  * Return value: The number of columns in @tree_view after insertion.
11355  **/
11356 gint
11357 gtk_tree_view_insert_column (GtkTreeView       *tree_view,
11358                              GtkTreeViewColumn *column,
11359                              gint               position)
11360 {
11361   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), -1);
11362   g_return_val_if_fail (GTK_IS_TREE_VIEW_COLUMN (column), -1);
11363   g_return_val_if_fail (column->tree_view == NULL, -1);
11364
11365   if (tree_view->priv->fixed_height_mode)
11366     g_return_val_if_fail (gtk_tree_view_column_get_sizing (column)
11367                           == GTK_TREE_VIEW_COLUMN_FIXED, -1);
11368
11369   g_object_ref_sink (column);
11370
11371   if (tree_view->priv->n_columns == 0 &&
11372       gtk_widget_get_realized (GTK_WIDGET (tree_view)) &&
11373       gtk_tree_view_get_headers_visible (tree_view))
11374     {
11375       gdk_window_show (tree_view->priv->header_window);
11376     }
11377
11378   g_signal_connect (column, "notify::sizing",
11379                     G_CALLBACK (column_sizing_notify), tree_view);
11380
11381   tree_view->priv->columns = g_list_insert (tree_view->priv->columns,
11382                                             column, position);
11383   tree_view->priv->n_columns++;
11384
11385   _gtk_tree_view_column_set_tree_view (column, tree_view);
11386
11387   if (gtk_widget_get_realized (GTK_WIDGET (tree_view)))
11388     {
11389       GList *list;
11390
11391       _gtk_tree_view_column_realize_button (column);
11392
11393       for (list = tree_view->priv->columns; list; list = list->next)
11394         {
11395           column = GTK_TREE_VIEW_COLUMN (list->data);
11396           if (column->visible)
11397             _gtk_tree_view_column_cell_set_dirty (column, TRUE);
11398         }
11399       gtk_widget_queue_resize (GTK_WIDGET (tree_view));
11400     }
11401
11402   g_signal_emit (tree_view, tree_view_signals[COLUMNS_CHANGED], 0);
11403
11404   return tree_view->priv->n_columns;
11405 }
11406
11407 /**
11408  * gtk_tree_view_insert_column_with_attributes:
11409  * @tree_view: A #GtkTreeView
11410  * @position: The position to insert the new column in.
11411  * @title: The title to set the header to.
11412  * @cell: The #GtkCellRenderer.
11413  * @Varargs: A %NULL-terminated list of attributes.
11414  *
11415  * Creates a new #GtkTreeViewColumn and inserts it into the @tree_view at
11416  * @position.  If @position is -1, then the newly created column is inserted at
11417  * the end.  The column is initialized with the attributes given. If @tree_view
11418  * has "fixed_height" mode enabled, then the new column will have its sizing
11419  * property set to be GTK_TREE_VIEW_COLUMN_FIXED.
11420  *
11421  * Return value: The number of columns in @tree_view after insertion.
11422  **/
11423 gint
11424 gtk_tree_view_insert_column_with_attributes (GtkTreeView     *tree_view,
11425                                              gint             position,
11426                                              const gchar     *title,
11427                                              GtkCellRenderer *cell,
11428                                              ...)
11429 {
11430   GtkTreeViewColumn *column;
11431   gchar *attribute;
11432   va_list args;
11433   gint column_id;
11434
11435   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), -1);
11436
11437   column = gtk_tree_view_column_new ();
11438   if (tree_view->priv->fixed_height_mode)
11439     gtk_tree_view_column_set_sizing (column, GTK_TREE_VIEW_COLUMN_FIXED);
11440
11441   gtk_tree_view_column_set_title (column, title);
11442   gtk_tree_view_column_pack_start (column, cell, TRUE);
11443
11444   va_start (args, cell);
11445
11446   attribute = va_arg (args, gchar *);
11447
11448   while (attribute != NULL)
11449     {
11450       column_id = va_arg (args, gint);
11451       gtk_tree_view_column_add_attribute (column, cell, attribute, column_id);
11452       attribute = va_arg (args, gchar *);
11453     }
11454
11455   va_end (args);
11456
11457   gtk_tree_view_insert_column (tree_view, column, position);
11458
11459   return tree_view->priv->n_columns;
11460 }
11461
11462 /**
11463  * gtk_tree_view_insert_column_with_data_func:
11464  * @tree_view: a #GtkTreeView
11465  * @position: Position to insert, -1 for append
11466  * @title: column title
11467  * @cell: cell renderer for column
11468  * @func: function to set attributes of cell renderer
11469  * @data: data for @func
11470  * @dnotify: destroy notifier for @data
11471  *
11472  * Convenience function that inserts a new column into the #GtkTreeView
11473  * with the given cell renderer and a #GtkCellDataFunc to set cell renderer
11474  * attributes (normally using data from the model). See also
11475  * gtk_tree_view_column_set_cell_data_func(), gtk_tree_view_column_pack_start().
11476  * If @tree_view has "fixed_height" mode enabled, then the new column will have its
11477  * "sizing" property set to be GTK_TREE_VIEW_COLUMN_FIXED.
11478  *
11479  * Return value: number of columns in the tree view post-insert
11480  **/
11481 gint
11482 gtk_tree_view_insert_column_with_data_func  (GtkTreeView               *tree_view,
11483                                              gint                       position,
11484                                              const gchar               *title,
11485                                              GtkCellRenderer           *cell,
11486                                              GtkTreeCellDataFunc        func,
11487                                              gpointer                   data,
11488                                              GDestroyNotify             dnotify)
11489 {
11490   GtkTreeViewColumn *column;
11491
11492   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), -1);
11493
11494   column = gtk_tree_view_column_new ();
11495   if (tree_view->priv->fixed_height_mode)
11496     gtk_tree_view_column_set_sizing (column, GTK_TREE_VIEW_COLUMN_FIXED);
11497
11498   gtk_tree_view_column_set_title (column, title);
11499   gtk_tree_view_column_pack_start (column, cell, TRUE);
11500   gtk_tree_view_column_set_cell_data_func (column, cell, func, data, dnotify);
11501
11502   gtk_tree_view_insert_column (tree_view, column, position);
11503
11504   return tree_view->priv->n_columns;
11505 }
11506
11507 /**
11508  * gtk_tree_view_get_column:
11509  * @tree_view: A #GtkTreeView.
11510  * @n: The position of the column, counting from 0.
11511  *
11512  * Gets the #GtkTreeViewColumn at the given position in the #tree_view.
11513  *
11514  * Return value: The #GtkTreeViewColumn, or %NULL if the position is outside the
11515  * range of columns.
11516  **/
11517 GtkTreeViewColumn *
11518 gtk_tree_view_get_column (GtkTreeView *tree_view,
11519                           gint         n)
11520 {
11521   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), NULL);
11522
11523   if (n < 0 || n >= tree_view->priv->n_columns)
11524     return NULL;
11525
11526   if (tree_view->priv->columns == NULL)
11527     return NULL;
11528
11529   return GTK_TREE_VIEW_COLUMN (g_list_nth (tree_view->priv->columns, n)->data);
11530 }
11531
11532 /**
11533  * gtk_tree_view_get_columns:
11534  * @tree_view: A #GtkTreeView
11535  *
11536  * Returns a #GList of all the #GtkTreeViewColumn s currently in @tree_view.
11537  * The returned list must be freed with g_list_free ().
11538  *
11539  * Return value: (element-type GtkTreeViewColumn) (transfer container): A list of #GtkTreeViewColumn s
11540  **/
11541 GList *
11542 gtk_tree_view_get_columns (GtkTreeView *tree_view)
11543 {
11544   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), NULL);
11545
11546   return g_list_copy (tree_view->priv->columns);
11547 }
11548
11549 /**
11550  * gtk_tree_view_move_column_after:
11551  * @tree_view: A #GtkTreeView
11552  * @column: The #GtkTreeViewColumn to be moved.
11553  * @base_column: (allow-none): The #GtkTreeViewColumn to be moved relative to, or %NULL.
11554  *
11555  * Moves @column to be after to @base_column.  If @base_column is %NULL, then
11556  * @column is placed in the first position.
11557  **/
11558 void
11559 gtk_tree_view_move_column_after (GtkTreeView       *tree_view,
11560                                  GtkTreeViewColumn *column,
11561                                  GtkTreeViewColumn *base_column)
11562 {
11563   GList *column_list_el, *base_el = NULL;
11564
11565   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
11566
11567   column_list_el = g_list_find (tree_view->priv->columns, column);
11568   g_return_if_fail (column_list_el != NULL);
11569
11570   if (base_column)
11571     {
11572       base_el = g_list_find (tree_view->priv->columns, base_column);
11573       g_return_if_fail (base_el != NULL);
11574     }
11575
11576   if (column_list_el->prev == base_el)
11577     return;
11578
11579   tree_view->priv->columns = g_list_remove_link (tree_view->priv->columns, column_list_el);
11580   if (base_el == NULL)
11581     {
11582       column_list_el->prev = NULL;
11583       column_list_el->next = tree_view->priv->columns;
11584       if (column_list_el->next)
11585         column_list_el->next->prev = column_list_el;
11586       tree_view->priv->columns = column_list_el;
11587     }
11588   else
11589     {
11590       column_list_el->prev = base_el;
11591       column_list_el->next = base_el->next;
11592       if (column_list_el->next)
11593         column_list_el->next->prev = column_list_el;
11594       base_el->next = column_list_el;
11595     }
11596
11597   if (gtk_widget_get_realized (GTK_WIDGET (tree_view)))
11598     {
11599       gtk_widget_queue_resize (GTK_WIDGET (tree_view));
11600       gtk_tree_view_size_allocate_columns (GTK_WIDGET (tree_view), NULL);
11601     }
11602
11603   g_signal_emit (tree_view, tree_view_signals[COLUMNS_CHANGED], 0);
11604 }
11605
11606 /**
11607  * gtk_tree_view_set_expander_column:
11608  * @tree_view: A #GtkTreeView
11609  * @column: %NULL, or the column to draw the expander arrow at.
11610  *
11611  * Sets the column to draw the expander arrow at. It must be in @tree_view.
11612  * If @column is %NULL, then the expander arrow is always at the first
11613  * visible column.
11614  *
11615  * If you do not want expander arrow to appear in your tree, set the
11616  * expander column to a hidden column.
11617  **/
11618 void
11619 gtk_tree_view_set_expander_column (GtkTreeView       *tree_view,
11620                                    GtkTreeViewColumn *column)
11621 {
11622   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
11623   g_return_if_fail (column == NULL || GTK_IS_TREE_VIEW_COLUMN (column));
11624
11625   if (tree_view->priv->expander_column != column)
11626     {
11627       GList *list;
11628
11629       if (column)
11630         {
11631           /* Confirm that column is in tree_view */
11632           for (list = tree_view->priv->columns; list; list = list->next)
11633             if (list->data == column)
11634               break;
11635           g_return_if_fail (list != NULL);
11636         }
11637
11638       tree_view->priv->expander_column = column;
11639       g_object_notify (G_OBJECT (tree_view), "expander-column");
11640     }
11641 }
11642
11643 /**
11644  * gtk_tree_view_get_expander_column:
11645  * @tree_view: A #GtkTreeView
11646  *
11647  * Returns the column that is the current expander column.  This
11648  * column has the expander arrow drawn next to it.
11649  *
11650  * Return value: The expander column.
11651  **/
11652 GtkTreeViewColumn *
11653 gtk_tree_view_get_expander_column (GtkTreeView *tree_view)
11654 {
11655   GList *list;
11656
11657   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), NULL);
11658
11659   for (list = tree_view->priv->columns; list; list = list->next)
11660     if (gtk_tree_view_is_expander_column (tree_view, GTK_TREE_VIEW_COLUMN (list->data)))
11661       return (GtkTreeViewColumn *) list->data;
11662   return NULL;
11663 }
11664
11665
11666 /**
11667  * gtk_tree_view_set_column_drag_function:
11668  * @tree_view: A #GtkTreeView.
11669  * @func: (allow-none): A function to determine which columns are reorderable, or %NULL.
11670  * @user_data: (allow-none): User data to be passed to @func, or %NULL
11671  * @destroy: (allow-none): Destroy notifier for @user_data, or %NULL
11672  *
11673  * Sets a user function for determining where a column may be dropped when
11674  * dragged.  This function is called on every column pair in turn at the
11675  * beginning of a column drag to determine where a drop can take place.  The
11676  * arguments passed to @func are: the @tree_view, the #GtkTreeViewColumn being
11677  * dragged, the two #GtkTreeViewColumn s determining the drop spot, and
11678  * @user_data.  If either of the #GtkTreeViewColumn arguments for the drop spot
11679  * are %NULL, then they indicate an edge.  If @func is set to be %NULL, then
11680  * @tree_view reverts to the default behavior of allowing all columns to be
11681  * dropped everywhere.
11682  **/
11683 void
11684 gtk_tree_view_set_column_drag_function (GtkTreeView               *tree_view,
11685                                         GtkTreeViewColumnDropFunc  func,
11686                                         gpointer                   user_data,
11687                                         GDestroyNotify             destroy)
11688 {
11689   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
11690
11691   if (tree_view->priv->column_drop_func_data_destroy)
11692     tree_view->priv->column_drop_func_data_destroy (tree_view->priv->column_drop_func_data);
11693
11694   tree_view->priv->column_drop_func = func;
11695   tree_view->priv->column_drop_func_data = user_data;
11696   tree_view->priv->column_drop_func_data_destroy = destroy;
11697 }
11698
11699 /**
11700  * gtk_tree_view_scroll_to_point:
11701  * @tree_view: a #GtkTreeView
11702  * @tree_x: X coordinate of new top-left pixel of visible area, or -1
11703  * @tree_y: Y coordinate of new top-left pixel of visible area, or -1
11704  *
11705  * Scrolls the tree view such that the top-left corner of the visible
11706  * area is @tree_x, @tree_y, where @tree_x and @tree_y are specified
11707  * in tree coordinates.  The @tree_view must be realized before
11708  * this function is called.  If it isn't, you probably want to be
11709  * using gtk_tree_view_scroll_to_cell().
11710  *
11711  * If either @tree_x or @tree_y are -1, then that direction isn't scrolled.
11712  **/
11713 void
11714 gtk_tree_view_scroll_to_point (GtkTreeView *tree_view,
11715                                gint         tree_x,
11716                                gint         tree_y)
11717 {
11718   GtkAdjustment *hadj;
11719   GtkAdjustment *vadj;
11720
11721   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
11722   g_return_if_fail (gtk_widget_get_realized (GTK_WIDGET (tree_view)));
11723
11724   hadj = tree_view->priv->hadjustment;
11725   vadj = tree_view->priv->vadjustment;
11726
11727   if (tree_x != -1)
11728     gtk_adjustment_set_value (hadj, tree_x);
11729   if (tree_y != -1)
11730     gtk_adjustment_set_value (vadj, tree_y);
11731 }
11732
11733 /**
11734  * gtk_tree_view_scroll_to_cell:
11735  * @tree_view: A #GtkTreeView.
11736  * @path: (allow-none): The path of the row to move to, or %NULL.
11737  * @column: (allow-none): The #GtkTreeViewColumn to move horizontally to, or %NULL.
11738  * @use_align: whether to use alignment arguments, or %FALSE.
11739  * @row_align: The vertical alignment of the row specified by @path.
11740  * @col_align: The horizontal alignment of the column specified by @column.
11741  *
11742  * Moves the alignments of @tree_view to the position specified by @column and
11743  * @path.  If @column is %NULL, then no horizontal scrolling occurs.  Likewise,
11744  * if @path is %NULL no vertical scrolling occurs.  At a minimum, one of @column
11745  * or @path need to be non-%NULL.  @row_align determines where the row is
11746  * placed, and @col_align determines where @column is placed.  Both are expected
11747  * to be between 0.0 and 1.0. 0.0 means left/top alignment, 1.0 means
11748  * right/bottom alignment, 0.5 means center.
11749  *
11750  * If @use_align is %FALSE, then the alignment arguments are ignored, and the
11751  * tree does the minimum amount of work to scroll the cell onto the screen.
11752  * This means that the cell will be scrolled to the edge closest to its current
11753  * position.  If the cell is currently visible on the screen, nothing is done.
11754  *
11755  * This function only works if the model is set, and @path is a valid row on the
11756  * model.  If the model changes before the @tree_view is realized, the centered
11757  * path will be modified to reflect this change.
11758  **/
11759 void
11760 gtk_tree_view_scroll_to_cell (GtkTreeView       *tree_view,
11761                               GtkTreePath       *path,
11762                               GtkTreeViewColumn *column,
11763                               gboolean           use_align,
11764                               gfloat             row_align,
11765                               gfloat             col_align)
11766 {
11767   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
11768   g_return_if_fail (tree_view->priv->model != NULL);
11769   g_return_if_fail (tree_view->priv->tree != NULL);
11770   g_return_if_fail (row_align >= 0.0 && row_align <= 1.0);
11771   g_return_if_fail (col_align >= 0.0 && col_align <= 1.0);
11772   g_return_if_fail (path != NULL || column != NULL);
11773
11774 #if 0
11775   g_print ("gtk_tree_view_scroll_to_cell:\npath: %s\ncolumn: %s\nuse_align: %d\nrow_align: %f\ncol_align: %f\n",
11776            gtk_tree_path_to_string (path), column?"non-null":"null", use_align, row_align, col_align);
11777 #endif
11778   row_align = CLAMP (row_align, 0.0, 1.0);
11779   col_align = CLAMP (col_align, 0.0, 1.0);
11780
11781
11782   /* Note: Despite the benefits that come from having one code path for the
11783    * scrolling code, we short-circuit validate_visible_area's immplementation as
11784    * it is much slower than just going to the point.
11785    */
11786   if (!gtk_widget_get_visible (GTK_WIDGET (tree_view)) ||
11787       !gtk_widget_get_realized (GTK_WIDGET (tree_view)) ||
11788       GTK_WIDGET_ALLOC_NEEDED (tree_view) ||
11789       GTK_RBNODE_FLAG_SET (tree_view->priv->tree->root, GTK_RBNODE_DESCENDANTS_INVALID))
11790     {
11791       if (tree_view->priv->scroll_to_path)
11792         gtk_tree_row_reference_free (tree_view->priv->scroll_to_path);
11793
11794       tree_view->priv->scroll_to_path = NULL;
11795       tree_view->priv->scroll_to_column = NULL;
11796
11797       if (path)
11798         tree_view->priv->scroll_to_path = gtk_tree_row_reference_new_proxy (G_OBJECT (tree_view), tree_view->priv->model, path);
11799       if (column)
11800         tree_view->priv->scroll_to_column = column;
11801       tree_view->priv->scroll_to_use_align = use_align;
11802       tree_view->priv->scroll_to_row_align = row_align;
11803       tree_view->priv->scroll_to_col_align = col_align;
11804
11805       install_presize_handler (tree_view);
11806     }
11807   else
11808     {
11809       GdkRectangle cell_rect;
11810       GdkRectangle vis_rect;
11811       gint dest_x, dest_y;
11812
11813       gtk_tree_view_get_background_area (tree_view, path, column, &cell_rect);
11814       gtk_tree_view_get_visible_rect (tree_view, &vis_rect);
11815
11816       cell_rect.y = TREE_WINDOW_Y_TO_RBTREE_Y (tree_view, cell_rect.y);
11817
11818       dest_x = vis_rect.x;
11819       dest_y = vis_rect.y;
11820
11821       if (column)
11822         {
11823           if (use_align)
11824             {
11825               dest_x = cell_rect.x - ((vis_rect.width - cell_rect.width) * col_align);
11826             }
11827           else
11828             {
11829               if (cell_rect.x < vis_rect.x)
11830                 dest_x = cell_rect.x;
11831               if (cell_rect.x + cell_rect.width > vis_rect.x + vis_rect.width)
11832                 dest_x = cell_rect.x + cell_rect.width - vis_rect.width;
11833             }
11834         }
11835
11836       if (path)
11837         {
11838           if (use_align)
11839             {
11840               dest_y = cell_rect.y - ((vis_rect.height - cell_rect.height) * row_align);
11841               dest_y = MAX (dest_y, 0);
11842             }
11843           else
11844             {
11845               if (cell_rect.y < vis_rect.y)
11846                 dest_y = cell_rect.y;
11847               if (cell_rect.y + cell_rect.height > vis_rect.y + vis_rect.height)
11848                 dest_y = cell_rect.y + cell_rect.height - vis_rect.height;
11849             }
11850         }
11851
11852       gtk_tree_view_scroll_to_point (tree_view, dest_x, dest_y);
11853     }
11854 }
11855
11856 /**
11857  * gtk_tree_view_row_activated:
11858  * @tree_view: A #GtkTreeView
11859  * @path: The #GtkTreePath to be activated.
11860  * @column: The #GtkTreeViewColumn to be activated.
11861  *
11862  * Activates the cell determined by @path and @column.
11863  **/
11864 void
11865 gtk_tree_view_row_activated (GtkTreeView       *tree_view,
11866                              GtkTreePath       *path,
11867                              GtkTreeViewColumn *column)
11868 {
11869   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
11870
11871   g_signal_emit (tree_view, tree_view_signals[ROW_ACTIVATED], 0, path, column);
11872 }
11873
11874
11875 static void
11876 gtk_tree_view_expand_all_emission_helper (GtkRBTree *tree,
11877                                           GtkRBNode *node,
11878                                           gpointer   data)
11879 {
11880   GtkTreeView *tree_view = data;
11881
11882   if ((node->flags & GTK_RBNODE_IS_PARENT) == GTK_RBNODE_IS_PARENT &&
11883       node->children)
11884     {
11885       GtkTreePath *path;
11886       GtkTreeIter iter;
11887
11888       path = _gtk_tree_view_find_path (tree_view, tree, node);
11889       gtk_tree_model_get_iter (tree_view->priv->model, &iter, path);
11890
11891       g_signal_emit (tree_view, tree_view_signals[ROW_EXPANDED], 0, &iter, path);
11892
11893       gtk_tree_path_free (path);
11894     }
11895
11896   if (node->children)
11897     _gtk_rbtree_traverse (node->children,
11898                           node->children->root,
11899                           G_PRE_ORDER,
11900                           gtk_tree_view_expand_all_emission_helper,
11901                           tree_view);
11902 }
11903
11904 /**
11905  * gtk_tree_view_expand_all:
11906  * @tree_view: A #GtkTreeView.
11907  *
11908  * Recursively expands all nodes in the @tree_view.
11909  **/
11910 void
11911 gtk_tree_view_expand_all (GtkTreeView *tree_view)
11912 {
11913   GtkTreePath *path;
11914   GtkRBTree *tree;
11915   GtkRBNode *node;
11916
11917   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
11918
11919   if (tree_view->priv->tree == NULL)
11920     return;
11921
11922   path = gtk_tree_path_new_first ();
11923   _gtk_tree_view_find_node (tree_view, path, &tree, &node);
11924
11925   while (node)
11926     {
11927       gtk_tree_view_real_expand_row (tree_view, path, tree, node, TRUE, FALSE);
11928       node = _gtk_rbtree_next (tree, node);
11929       gtk_tree_path_next (path);
11930   }
11931
11932   gtk_tree_path_free (path);
11933 }
11934
11935 /* Timeout to animate the expander during expands and collapses */
11936 static gboolean
11937 expand_collapse_timeout (gpointer data)
11938 {
11939   return do_expand_collapse (data);
11940 }
11941
11942 static void
11943 add_expand_collapse_timeout (GtkTreeView *tree_view,
11944                              GtkRBTree   *tree,
11945                              GtkRBNode   *node,
11946                              gboolean     expand)
11947 {
11948   if (tree_view->priv->expand_collapse_timeout != 0)
11949     return;
11950
11951   tree_view->priv->expand_collapse_timeout =
11952       gdk_threads_add_timeout (50, expand_collapse_timeout, tree_view);
11953   tree_view->priv->expanded_collapsed_tree = tree;
11954   tree_view->priv->expanded_collapsed_node = node;
11955
11956   if (expand)
11957     GTK_RBNODE_SET_FLAG (node, GTK_RBNODE_IS_SEMI_COLLAPSED);
11958   else
11959     GTK_RBNODE_SET_FLAG (node, GTK_RBNODE_IS_SEMI_EXPANDED);
11960 }
11961
11962 static void
11963 remove_expand_collapse_timeout (GtkTreeView *tree_view)
11964 {
11965   if (tree_view->priv->expand_collapse_timeout)
11966     {
11967       g_source_remove (tree_view->priv->expand_collapse_timeout);
11968       tree_view->priv->expand_collapse_timeout = 0;
11969     }
11970
11971   if (tree_view->priv->expanded_collapsed_node != NULL)
11972     {
11973       GTK_RBNODE_UNSET_FLAG (tree_view->priv->expanded_collapsed_node, GTK_RBNODE_IS_SEMI_EXPANDED);
11974       GTK_RBNODE_UNSET_FLAG (tree_view->priv->expanded_collapsed_node, GTK_RBNODE_IS_SEMI_COLLAPSED);
11975
11976       tree_view->priv->expanded_collapsed_node = NULL;
11977     }
11978 }
11979
11980 static void
11981 cancel_arrow_animation (GtkTreeView *tree_view)
11982 {
11983   if (tree_view->priv->expand_collapse_timeout)
11984     {
11985       while (do_expand_collapse (tree_view));
11986
11987       remove_expand_collapse_timeout (tree_view);
11988     }
11989 }
11990
11991 static gboolean
11992 do_expand_collapse (GtkTreeView *tree_view)
11993 {
11994   GtkRBNode *node;
11995   GtkRBTree *tree;
11996   gboolean expanding;
11997   gboolean redraw;
11998
11999   redraw = FALSE;
12000   expanding = TRUE;
12001
12002   node = tree_view->priv->expanded_collapsed_node;
12003   tree = tree_view->priv->expanded_collapsed_tree;
12004
12005   if (node->children == NULL)
12006     expanding = FALSE;
12007
12008   if (expanding)
12009     {
12010       if (GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_SEMI_COLLAPSED))
12011         {
12012           GTK_RBNODE_UNSET_FLAG (node, GTK_RBNODE_IS_SEMI_COLLAPSED);
12013           GTK_RBNODE_SET_FLAG (node, GTK_RBNODE_IS_SEMI_EXPANDED);
12014
12015           redraw = TRUE;
12016
12017         }
12018       else if (GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_SEMI_EXPANDED))
12019         {
12020           GTK_RBNODE_UNSET_FLAG (node, GTK_RBNODE_IS_SEMI_EXPANDED);
12021
12022           redraw = TRUE;
12023         }
12024     }
12025   else
12026     {
12027       if (GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_SEMI_EXPANDED))
12028         {
12029           GTK_RBNODE_UNSET_FLAG (node, GTK_RBNODE_IS_SEMI_EXPANDED);
12030           GTK_RBNODE_SET_FLAG (node, GTK_RBNODE_IS_SEMI_COLLAPSED);
12031
12032           redraw = TRUE;
12033         }
12034       else if (GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_SEMI_COLLAPSED))
12035         {
12036           GTK_RBNODE_UNSET_FLAG (node, GTK_RBNODE_IS_SEMI_COLLAPSED);
12037
12038           redraw = TRUE;
12039
12040         }
12041     }
12042
12043   if (redraw)
12044     {
12045       gtk_tree_view_queue_draw_arrow (tree_view, tree, node, NULL);
12046
12047       return TRUE;
12048     }
12049
12050   return FALSE;
12051 }
12052
12053 /**
12054  * gtk_tree_view_collapse_all:
12055  * @tree_view: A #GtkTreeView.
12056  *
12057  * Recursively collapses all visible, expanded nodes in @tree_view.
12058  **/
12059 void
12060 gtk_tree_view_collapse_all (GtkTreeView *tree_view)
12061 {
12062   GtkRBTree *tree;
12063   GtkRBNode *node;
12064   GtkTreePath *path;
12065   gint *indices;
12066
12067   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
12068
12069   if (tree_view->priv->tree == NULL)
12070     return;
12071
12072   path = gtk_tree_path_new ();
12073   gtk_tree_path_down (path);
12074   indices = gtk_tree_path_get_indices (path);
12075
12076   tree = tree_view->priv->tree;
12077   node = tree->root;
12078   while (node && node->left != tree->nil)
12079     node = node->left;
12080
12081   while (node)
12082     {
12083       if (node->children)
12084         gtk_tree_view_real_collapse_row (tree_view, path, tree, node, FALSE);
12085       indices[0]++;
12086       node = _gtk_rbtree_next (tree, node);
12087     }
12088
12089   gtk_tree_path_free (path);
12090 }
12091
12092 /**
12093  * gtk_tree_view_expand_to_path:
12094  * @tree_view: A #GtkTreeView.
12095  * @path: path to a row.
12096  *
12097  * Expands the row at @path. This will also expand all parent rows of
12098  * @path as necessary.
12099  *
12100  * Since: 2.2
12101  **/
12102 void
12103 gtk_tree_view_expand_to_path (GtkTreeView *tree_view,
12104                               GtkTreePath *path)
12105 {
12106   gint i, depth;
12107   gint *indices;
12108   GtkTreePath *tmp;
12109
12110   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
12111   g_return_if_fail (path != NULL);
12112
12113   depth = gtk_tree_path_get_depth (path);
12114   indices = gtk_tree_path_get_indices (path);
12115
12116   tmp = gtk_tree_path_new ();
12117   g_return_if_fail (tmp != NULL);
12118
12119   for (i = 0; i < depth; i++)
12120     {
12121       gtk_tree_path_append_index (tmp, indices[i]);
12122       gtk_tree_view_expand_row (tree_view, tmp, FALSE);
12123     }
12124
12125   gtk_tree_path_free (tmp);
12126 }
12127
12128 /* FIXME the bool return values for expand_row and collapse_row are
12129  * not analagous; they should be TRUE if the row had children and
12130  * was not already in the requested state.
12131  */
12132
12133
12134 static gboolean
12135 gtk_tree_view_real_expand_row (GtkTreeView *tree_view,
12136                                GtkTreePath *path,
12137                                GtkRBTree   *tree,
12138                                GtkRBNode   *node,
12139                                gboolean     open_all,
12140                                gboolean     animate)
12141 {
12142   GtkTreeIter iter;
12143   GtkTreeIter temp;
12144   gboolean expand;
12145
12146   if (animate)
12147     g_object_get (gtk_widget_get_settings (GTK_WIDGET (tree_view)),
12148                   "gtk-enable-animations", &animate,
12149                   NULL);
12150
12151   remove_auto_expand_timeout (tree_view);
12152
12153   if (node->children && !open_all)
12154     return FALSE;
12155
12156   if (! GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_PARENT))
12157     return FALSE;
12158
12159   gtk_tree_model_get_iter (tree_view->priv->model, &iter, path);
12160   if (! gtk_tree_model_iter_has_child (tree_view->priv->model, &iter))
12161     return FALSE;
12162
12163
12164    if (node->children && open_all)
12165     {
12166       gboolean retval = FALSE;
12167       GtkTreePath *tmp_path = gtk_tree_path_copy (path);
12168
12169       gtk_tree_path_append_index (tmp_path, 0);
12170       tree = node->children;
12171       node = tree->root;
12172       while (node->left != tree->nil)
12173         node = node->left;
12174       /* try to expand the children */
12175       do
12176         {
12177          gboolean t;
12178          t = gtk_tree_view_real_expand_row (tree_view, tmp_path, tree, node,
12179                                             TRUE, animate);
12180          if (t)
12181            retval = TRUE;
12182
12183          gtk_tree_path_next (tmp_path);
12184          node = _gtk_rbtree_next (tree, node);
12185        }
12186       while (node != NULL);
12187
12188       gtk_tree_path_free (tmp_path);
12189
12190       return retval;
12191     }
12192
12193   g_signal_emit (tree_view, tree_view_signals[TEST_EXPAND_ROW], 0, &iter, path, &expand);
12194
12195   if (!gtk_tree_model_iter_has_child (tree_view->priv->model, &iter))
12196     return FALSE;
12197
12198   if (expand)
12199     return FALSE;
12200
12201   node->children = _gtk_rbtree_new ();
12202   node->children->parent_tree = tree;
12203   node->children->parent_node = node;
12204
12205   gtk_tree_model_iter_children (tree_view->priv->model, &temp, &iter);
12206
12207   gtk_tree_view_build_tree (tree_view,
12208                             node->children,
12209                             &temp,
12210                             gtk_tree_path_get_depth (path) + 1,
12211                             open_all);
12212
12213   remove_expand_collapse_timeout (tree_view);
12214
12215   if (animate)
12216     add_expand_collapse_timeout (tree_view, tree, node, TRUE);
12217
12218   install_presize_handler (tree_view);
12219
12220   g_signal_emit (tree_view, tree_view_signals[ROW_EXPANDED], 0, &iter, path);
12221   if (open_all && node->children)
12222     {
12223       _gtk_rbtree_traverse (node->children,
12224                             node->children->root,
12225                             G_PRE_ORDER,
12226                             gtk_tree_view_expand_all_emission_helper,
12227                             tree_view);
12228     }
12229   return TRUE;
12230 }
12231
12232
12233 /**
12234  * gtk_tree_view_expand_row:
12235  * @tree_view: a #GtkTreeView
12236  * @path: path to a row
12237  * @open_all: whether to recursively expand, or just expand immediate children
12238  *
12239  * Opens the row so its children are visible.
12240  *
12241  * Return value: %TRUE if the row existed and had children
12242  **/
12243 gboolean
12244 gtk_tree_view_expand_row (GtkTreeView *tree_view,
12245                           GtkTreePath *path,
12246                           gboolean     open_all)
12247 {
12248   GtkRBTree *tree;
12249   GtkRBNode *node;
12250
12251   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), FALSE);
12252   g_return_val_if_fail (tree_view->priv->model != NULL, FALSE);
12253   g_return_val_if_fail (path != NULL, FALSE);
12254
12255   if (_gtk_tree_view_find_node (tree_view,
12256                                 path,
12257                                 &tree,
12258                                 &node))
12259     return FALSE;
12260
12261   if (tree != NULL)
12262     return gtk_tree_view_real_expand_row (tree_view, path, tree, node, open_all, FALSE);
12263   else
12264     return FALSE;
12265 }
12266
12267 static gboolean
12268 gtk_tree_view_real_collapse_row (GtkTreeView *tree_view,
12269                                  GtkTreePath *path,
12270                                  GtkRBTree   *tree,
12271                                  GtkRBNode   *node,
12272                                  gboolean     animate)
12273 {
12274   GtkTreeIter iter;
12275   GtkTreeIter children;
12276   gboolean collapse;
12277   gint x, y;
12278   GList *list;
12279   GdkWindow *child, *parent;
12280
12281   if (animate)
12282     g_object_get (gtk_widget_get_settings (GTK_WIDGET (tree_view)),
12283                   "gtk-enable-animations", &animate,
12284                   NULL);
12285
12286   remove_auto_expand_timeout (tree_view);
12287
12288   if (node->children == NULL)
12289     return FALSE;
12290
12291   gtk_tree_model_get_iter (tree_view->priv->model, &iter, path);
12292
12293   g_signal_emit (tree_view, tree_view_signals[TEST_COLLAPSE_ROW], 0, &iter, path, &collapse);
12294
12295   if (collapse)
12296     return FALSE;
12297
12298   /* if the prelighted node is a child of us, we want to unprelight it.  We have
12299    * a chance to prelight the correct node below */
12300
12301   if (tree_view->priv->prelight_tree)
12302     {
12303       GtkRBTree *parent_tree;
12304       GtkRBNode *parent_node;
12305
12306       parent_tree = tree_view->priv->prelight_tree->parent_tree;
12307       parent_node = tree_view->priv->prelight_tree->parent_node;
12308       while (parent_tree)
12309         {
12310           if (parent_tree == tree && parent_node == node)
12311             {
12312               ensure_unprelighted (tree_view);
12313               break;
12314             }
12315           parent_node = parent_tree->parent_node;
12316           parent_tree = parent_tree->parent_tree;
12317         }
12318     }
12319
12320   TREE_VIEW_INTERNAL_ASSERT (gtk_tree_model_iter_children (tree_view->priv->model, &children, &iter), FALSE);
12321
12322   for (list = tree_view->priv->columns; list; list = list->next)
12323     {
12324       GtkTreeViewColumn *column = list->data;
12325
12326       if (column->visible == FALSE)
12327         continue;
12328       if (gtk_tree_view_column_get_sizing (column) == GTK_TREE_VIEW_COLUMN_AUTOSIZE)
12329         _gtk_tree_view_column_cell_set_dirty (column, TRUE);
12330     }
12331
12332   if (tree_view->priv->destroy_count_func)
12333     {
12334       GtkTreePath *child_path;
12335       gint child_count = 0;
12336       child_path = gtk_tree_path_copy (path);
12337       gtk_tree_path_down (child_path);
12338       if (node->children)
12339         _gtk_rbtree_traverse (node->children, node->children->root, G_POST_ORDER, count_children_helper, &child_count);
12340       tree_view->priv->destroy_count_func (tree_view, child_path, child_count, tree_view->priv->destroy_count_data);
12341       gtk_tree_path_free (child_path);
12342     }
12343
12344   if (gtk_tree_row_reference_valid (tree_view->priv->cursor))
12345     {
12346       GtkTreePath *cursor_path = gtk_tree_row_reference_get_path (tree_view->priv->cursor);
12347
12348       if (gtk_tree_path_is_ancestor (path, cursor_path))
12349         {
12350           gtk_tree_row_reference_free (tree_view->priv->cursor);
12351           tree_view->priv->cursor = gtk_tree_row_reference_new_proxy (G_OBJECT (tree_view),
12352                                                                       tree_view->priv->model,
12353                                                                       path);
12354         }
12355       gtk_tree_path_free (cursor_path);
12356     }
12357
12358   if (gtk_tree_row_reference_valid (tree_view->priv->anchor))
12359     {
12360       GtkTreePath *anchor_path = gtk_tree_row_reference_get_path (tree_view->priv->anchor);
12361       if (gtk_tree_path_is_ancestor (path, anchor_path))
12362         {
12363           gtk_tree_row_reference_free (tree_view->priv->anchor);
12364           tree_view->priv->anchor = NULL;
12365         }
12366       gtk_tree_path_free (anchor_path);
12367     }
12368
12369   /* Stop a pending double click */
12370   tree_view->priv->last_button_x = -1;
12371   tree_view->priv->last_button_y = -1;
12372
12373   remove_expand_collapse_timeout (tree_view);
12374
12375   if (gtk_tree_view_unref_and_check_selection_tree (tree_view, node->children))
12376     {
12377       _gtk_rbtree_remove (node->children);
12378       g_signal_emit_by_name (tree_view->priv->selection, "changed");
12379     }
12380   else
12381     _gtk_rbtree_remove (node->children);
12382
12383   if (animate)
12384     add_expand_collapse_timeout (tree_view, tree, node, FALSE);
12385
12386   if (gtk_widget_get_mapped (GTK_WIDGET (tree_view)))
12387     {
12388       gtk_widget_queue_resize (GTK_WIDGET (tree_view));
12389     }
12390
12391   g_signal_emit (tree_view, tree_view_signals[ROW_COLLAPSED], 0, &iter, path);
12392
12393   if (gtk_widget_get_mapped (GTK_WIDGET (tree_view)))
12394     {
12395       /* now that we've collapsed all rows, we want to try to set the prelight
12396        * again. To do this, we fake a motion event and send it to ourselves. */
12397
12398       child = tree_view->priv->bin_window;
12399       parent = gdk_window_get_parent (child);
12400
12401       if (gdk_window_get_pointer (parent, &x, &y, NULL) == child)
12402         {
12403           GdkEventMotion event;
12404           gint child_x, child_y;
12405
12406           gdk_window_get_position (child, &child_x, &child_y);
12407
12408           event.window = tree_view->priv->bin_window;
12409           event.x = x - child_x;
12410           event.y = y - child_y;
12411
12412           /* despite the fact this isn't a real event, I'm almost positive it will
12413            * never trigger a drag event.  maybe_drag is the only function that uses
12414            * more than just event.x and event.y. */
12415           gtk_tree_view_motion_bin_window (GTK_WIDGET (tree_view), &event);
12416         }
12417     }
12418
12419   return TRUE;
12420 }
12421
12422 /**
12423  * gtk_tree_view_collapse_row:
12424  * @tree_view: a #GtkTreeView
12425  * @path: path to a row in the @tree_view
12426  *
12427  * Collapses a row (hides its child rows, if they exist).
12428  *
12429  * Return value: %TRUE if the row was collapsed.
12430  **/
12431 gboolean
12432 gtk_tree_view_collapse_row (GtkTreeView *tree_view,
12433                             GtkTreePath *path)
12434 {
12435   GtkRBTree *tree;
12436   GtkRBNode *node;
12437
12438   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), FALSE);
12439   g_return_val_if_fail (tree_view->priv->tree != NULL, FALSE);
12440   g_return_val_if_fail (path != NULL, FALSE);
12441
12442   if (_gtk_tree_view_find_node (tree_view,
12443                                 path,
12444                                 &tree,
12445                                 &node))
12446     return FALSE;
12447
12448   if (tree == NULL || node->children == NULL)
12449     return FALSE;
12450
12451   return gtk_tree_view_real_collapse_row (tree_view, path, tree, node, FALSE);
12452 }
12453
12454 static void
12455 gtk_tree_view_map_expanded_rows_helper (GtkTreeView            *tree_view,
12456                                         GtkRBTree              *tree,
12457                                         GtkTreePath            *path,
12458                                         GtkTreeViewMappingFunc  func,
12459                                         gpointer                user_data)
12460 {
12461   GtkRBNode *node;
12462
12463   if (tree == NULL || tree->root == NULL)
12464     return;
12465
12466   node = tree->root;
12467
12468   while (node && node->left != tree->nil)
12469     node = node->left;
12470
12471   while (node)
12472     {
12473       if (node->children)
12474         {
12475           (* func) (tree_view, path, user_data);
12476           gtk_tree_path_down (path);
12477           gtk_tree_view_map_expanded_rows_helper (tree_view, node->children, path, func, user_data);
12478           gtk_tree_path_up (path);
12479         }
12480       gtk_tree_path_next (path);
12481       node = _gtk_rbtree_next (tree, node);
12482     }
12483 }
12484
12485 /**
12486  * gtk_tree_view_map_expanded_rows:
12487  * @tree_view: A #GtkTreeView
12488  * @func: A function to be called
12489  * @data: User data to be passed to the function.
12490  *
12491  * Calls @func on all expanded rows.
12492  **/
12493 void
12494 gtk_tree_view_map_expanded_rows (GtkTreeView            *tree_view,
12495                                  GtkTreeViewMappingFunc  func,
12496                                  gpointer                user_data)
12497 {
12498   GtkTreePath *path;
12499
12500   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
12501   g_return_if_fail (func != NULL);
12502
12503   path = gtk_tree_path_new_first ();
12504
12505   gtk_tree_view_map_expanded_rows_helper (tree_view,
12506                                           tree_view->priv->tree,
12507                                           path, func, user_data);
12508
12509   gtk_tree_path_free (path);
12510 }
12511
12512 /**
12513  * gtk_tree_view_row_expanded:
12514  * @tree_view: A #GtkTreeView.
12515  * @path: A #GtkTreePath to test expansion state.
12516  *
12517  * Returns %TRUE if the node pointed to by @path is expanded in @tree_view.
12518  *
12519  * Return value: %TRUE if #path is expanded.
12520  **/
12521 gboolean
12522 gtk_tree_view_row_expanded (GtkTreeView *tree_view,
12523                             GtkTreePath *path)
12524 {
12525   GtkRBTree *tree;
12526   GtkRBNode *node;
12527
12528   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), FALSE);
12529   g_return_val_if_fail (path != NULL, FALSE);
12530
12531   _gtk_tree_view_find_node (tree_view, path, &tree, &node);
12532
12533   if (node == NULL)
12534     return FALSE;
12535
12536   return (node->children != NULL);
12537 }
12538
12539 /**
12540  * gtk_tree_view_get_reorderable:
12541  * @tree_view: a #GtkTreeView
12542  *
12543  * Retrieves whether the user can reorder the tree via drag-and-drop. See
12544  * gtk_tree_view_set_reorderable().
12545  *
12546  * Return value: %TRUE if the tree can be reordered.
12547  **/
12548 gboolean
12549 gtk_tree_view_get_reorderable (GtkTreeView *tree_view)
12550 {
12551   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), FALSE);
12552
12553   return tree_view->priv->reorderable;
12554 }
12555
12556 /**
12557  * gtk_tree_view_set_reorderable:
12558  * @tree_view: A #GtkTreeView.
12559  * @reorderable: %TRUE, if the tree can be reordered.
12560  *
12561  * This function is a convenience function to allow you to reorder
12562  * models that support the #GtkDragSourceIface and the
12563  * #GtkDragDestIface.  Both #GtkTreeStore and #GtkListStore support
12564  * these.  If @reorderable is %TRUE, then the user can reorder the
12565  * model by dragging and dropping rows. The developer can listen to
12566  * these changes by connecting to the model's row_inserted and
12567  * row_deleted signals. The reordering is implemented by setting up
12568  * the tree view as a drag source and destination. Therefore, drag and
12569  * drop can not be used in a reorderable view for any other purpose.
12570  *
12571  * This function does not give you any degree of control over the order -- any
12572  * reordering is allowed.  If more control is needed, you should probably
12573  * handle drag and drop manually.
12574  **/
12575 void
12576 gtk_tree_view_set_reorderable (GtkTreeView *tree_view,
12577                                gboolean     reorderable)
12578 {
12579   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
12580
12581   reorderable = reorderable != FALSE;
12582
12583   if (tree_view->priv->reorderable == reorderable)
12584     return;
12585
12586   if (reorderable)
12587     {
12588       const GtkTargetEntry row_targets[] = {
12589         { "GTK_TREE_MODEL_ROW", GTK_TARGET_SAME_WIDGET, 0 }
12590       };
12591
12592       gtk_tree_view_enable_model_drag_source (tree_view,
12593                                               GDK_BUTTON1_MASK,
12594                                               row_targets,
12595                                               G_N_ELEMENTS (row_targets),
12596                                               GDK_ACTION_MOVE);
12597       gtk_tree_view_enable_model_drag_dest (tree_view,
12598                                             row_targets,
12599                                             G_N_ELEMENTS (row_targets),
12600                                             GDK_ACTION_MOVE);
12601     }
12602   else
12603     {
12604       gtk_tree_view_unset_rows_drag_source (tree_view);
12605       gtk_tree_view_unset_rows_drag_dest (tree_view);
12606     }
12607
12608   tree_view->priv->reorderable = reorderable;
12609
12610   g_object_notify (G_OBJECT (tree_view), "reorderable");
12611 }
12612
12613 static void
12614 gtk_tree_view_real_set_cursor (GtkTreeView     *tree_view,
12615                                GtkTreePath     *path,
12616                                gboolean         clear_and_select,
12617                                gboolean         clamp_node)
12618 {
12619   GtkRBTree *tree = NULL;
12620   GtkRBNode *node = NULL;
12621
12622   if (gtk_tree_row_reference_valid (tree_view->priv->cursor))
12623     {
12624       GtkTreePath *cursor_path;
12625       cursor_path = gtk_tree_row_reference_get_path (tree_view->priv->cursor);
12626       gtk_tree_view_queue_draw_path (tree_view, cursor_path, NULL);
12627       gtk_tree_path_free (cursor_path);
12628     }
12629
12630   gtk_tree_row_reference_free (tree_view->priv->cursor);
12631   tree_view->priv->cursor = NULL;
12632
12633   /* One cannot set the cursor on a separator.   Also, if
12634    * _gtk_tree_view_find_node returns TRUE, it ran out of tree
12635    * before finding the tree and node belonging to path.  The
12636    * path maps to a non-existing path and we will silently bail out.
12637    * We unset tree and node to avoid further processing.
12638    */
12639   if (!row_is_separator (tree_view, NULL, path)
12640       && _gtk_tree_view_find_node (tree_view, path, &tree, &node) == FALSE)
12641     {
12642       tree_view->priv->cursor =
12643           gtk_tree_row_reference_new_proxy (G_OBJECT (tree_view),
12644                                             tree_view->priv->model,
12645                                             path);
12646     }
12647   else
12648     {
12649       tree = NULL;
12650       node = NULL;
12651     }
12652
12653   if (tree != NULL)
12654     {
12655       GtkRBTree *new_tree = NULL;
12656       GtkRBNode *new_node = NULL;
12657
12658       if (clear_and_select && !tree_view->priv->ctrl_pressed)
12659         {
12660           GtkTreeSelectMode mode = 0;
12661
12662           if (tree_view->priv->ctrl_pressed)
12663             mode |= GTK_TREE_SELECT_MODE_TOGGLE;
12664           if (tree_view->priv->shift_pressed)
12665             mode |= GTK_TREE_SELECT_MODE_EXTEND;
12666
12667           _gtk_tree_selection_internal_select_node (tree_view->priv->selection,
12668                                                     node, tree, path, mode,
12669                                                     FALSE);
12670         }
12671
12672       /* We have to re-find tree and node here again, somebody might have
12673        * cleared the node or the whole tree in the GtkTreeSelection::changed
12674        * callback. If the nodes differ we bail out here.
12675        */
12676       _gtk_tree_view_find_node (tree_view, path, &new_tree, &new_node);
12677
12678       if (tree != new_tree || node != new_node)
12679         return;
12680
12681       if (clamp_node)
12682         {
12683           gtk_tree_view_clamp_node_visible (tree_view, tree, node);
12684           _gtk_tree_view_queue_draw_node (tree_view, tree, node, NULL);
12685         }
12686     }
12687
12688   g_signal_emit (tree_view, tree_view_signals[CURSOR_CHANGED], 0);
12689 }
12690
12691 /**
12692  * gtk_tree_view_get_cursor:
12693  * @tree_view: A #GtkTreeView
12694  * @path: (out) (allow-none): A pointer to be filled with the current cursor path, or %NULL
12695  * @focus_column: (out) (allow-none): A pointer to be filled with the current focus column, or %NULL
12696  *
12697  * Fills in @path and @focus_column with the current path and focus column.  If
12698  * the cursor isn't currently set, then *@path will be %NULL.  If no column
12699  * currently has focus, then *@focus_column will be %NULL.
12700  *
12701  * The returned #GtkTreePath must be freed with gtk_tree_path_free() when
12702  * you are done with it.
12703  **/
12704 void
12705 gtk_tree_view_get_cursor (GtkTreeView        *tree_view,
12706                           GtkTreePath       **path,
12707                           GtkTreeViewColumn **focus_column)
12708 {
12709   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
12710
12711   if (path)
12712     {
12713       if (gtk_tree_row_reference_valid (tree_view->priv->cursor))
12714         *path = gtk_tree_row_reference_get_path (tree_view->priv->cursor);
12715       else
12716         *path = NULL;
12717     }
12718
12719   if (focus_column)
12720     {
12721       *focus_column = tree_view->priv->focus_column;
12722     }
12723 }
12724
12725 /**
12726  * gtk_tree_view_set_cursor:
12727  * @tree_view: A #GtkTreeView
12728  * @path: A #GtkTreePath
12729  * @focus_column: (allow-none): A #GtkTreeViewColumn, or %NULL
12730  * @start_editing: %TRUE if the specified cell should start being edited.
12731  *
12732  * Sets the current keyboard focus to be at @path, and selects it.  This is
12733  * useful when you want to focus the user's attention on a particular row.  If
12734  * @focus_column is not %NULL, then focus is given to the column specified by
12735  * it. Additionally, if @focus_column is specified, and @start_editing is
12736  * %TRUE, then editing should be started in the specified cell.
12737  * This function is often followed by @gtk_widget_grab_focus (@tree_view)
12738  * in order to give keyboard focus to the widget.  Please note that editing
12739  * can only happen when the widget is realized.
12740  *
12741  * If @path is invalid for @model, the current cursor (if any) will be unset
12742  * and the function will return without failing.
12743  **/
12744 void
12745 gtk_tree_view_set_cursor (GtkTreeView       *tree_view,
12746                           GtkTreePath       *path,
12747                           GtkTreeViewColumn *focus_column,
12748                           gboolean           start_editing)
12749 {
12750   gtk_tree_view_set_cursor_on_cell (tree_view, path, focus_column,
12751                                     NULL, start_editing);
12752 }
12753
12754 /**
12755  * gtk_tree_view_set_cursor_on_cell:
12756  * @tree_view: A #GtkTreeView
12757  * @path: A #GtkTreePath
12758  * @focus_column: (allow-none): A #GtkTreeViewColumn, or %NULL
12759  * @focus_cell: (allow-none): A #GtkCellRenderer, or %NULL
12760  * @start_editing: %TRUE if the specified cell should start being edited.
12761  *
12762  * Sets the current keyboard focus to be at @path, and selects it.  This is
12763  * useful when you want to focus the user's attention on a particular row.  If
12764  * @focus_column is not %NULL, then focus is given to the column specified by
12765  * it. If @focus_column and @focus_cell are not %NULL, and @focus_column
12766  * contains 2 or more editable or activatable cells, then focus is given to
12767  * the cell specified by @focus_cell. Additionally, if @focus_column is
12768  * specified, and @start_editing is %TRUE, then editing should be started in
12769  * the specified cell.  This function is often followed by
12770  * @gtk_widget_grab_focus (@tree_view) in order to give keyboard focus to the
12771  * widget.  Please note that editing can only happen when the widget is
12772  * realized.
12773  *
12774  * If @path is invalid for @model, the current cursor (if any) will be unset
12775  * and the function will return without failing.
12776  *
12777  * Since: 2.2
12778  **/
12779 void
12780 gtk_tree_view_set_cursor_on_cell (GtkTreeView       *tree_view,
12781                                   GtkTreePath       *path,
12782                                   GtkTreeViewColumn *focus_column,
12783                                   GtkCellRenderer   *focus_cell,
12784                                   gboolean           start_editing)
12785 {
12786   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
12787   g_return_if_fail (path != NULL);
12788   g_return_if_fail (focus_column == NULL || GTK_IS_TREE_VIEW_COLUMN (focus_column));
12789
12790   if (!tree_view->priv->model)
12791     return;
12792
12793   if (focus_cell)
12794     {
12795       g_return_if_fail (focus_column);
12796       g_return_if_fail (GTK_IS_CELL_RENDERER (focus_cell));
12797     }
12798
12799   /* cancel the current editing, if it exists */
12800   if (tree_view->priv->edited_column &&
12801       tree_view->priv->edited_column->editable_widget)
12802     gtk_tree_view_stop_editing (tree_view, TRUE);
12803
12804   gtk_tree_view_real_set_cursor (tree_view, path, TRUE, TRUE);
12805
12806   if (focus_column && focus_column->visible)
12807     {
12808       GList *list;
12809       gboolean column_in_tree = FALSE;
12810
12811       for (list = tree_view->priv->columns; list; list = list->next)
12812         if (list->data == focus_column)
12813           {
12814             column_in_tree = TRUE;
12815             break;
12816           }
12817       g_return_if_fail (column_in_tree);
12818       tree_view->priv->focus_column = focus_column;
12819       if (focus_cell)
12820         gtk_tree_view_column_focus_cell (focus_column, focus_cell);
12821       if (start_editing)
12822         gtk_tree_view_start_editing (tree_view, path);
12823     }
12824 }
12825
12826 /**
12827  * gtk_tree_view_get_bin_window:
12828  * @tree_view: A #GtkTreeView
12829  *
12830  * Returns the window that @tree_view renders to.  This is used primarily to
12831  * compare to <literal>event->window</literal> to confirm that the event on
12832  * @tree_view is on the right window.
12833  *
12834  * Return value: A #GdkWindow, or %NULL when @tree_view hasn't been realized yet
12835  **/
12836 GdkWindow *
12837 gtk_tree_view_get_bin_window (GtkTreeView *tree_view)
12838 {
12839   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), NULL);
12840
12841   return tree_view->priv->bin_window;
12842 }
12843
12844 /**
12845  * gtk_tree_view_get_path_at_pos:
12846  * @tree_view: A #GtkTreeView.
12847  * @x: The x position to be identified (relative to bin_window).
12848  * @y: The y position to be identified (relative to bin_window).
12849  * @path: (out) (allow-none): A pointer to a #GtkTreePath pointer to be filled in, or %NULL
12850  * @column: (out) (allow-none): A pointer to a #GtkTreeViewColumn pointer to be filled in, or %NULL
12851  * @cell_x: (out) (allow-none): A pointer where the X coordinate relative to the cell can be placed, or %NULL
12852  * @cell_y: (out) (allow-none): A pointer where the Y coordinate relative to the cell can be placed, or %NULL
12853  *
12854  * Finds the path at the point (@x, @y), relative to bin_window coordinates
12855  * (please see gtk_tree_view_get_bin_window()).
12856  * That is, @x and @y are relative to an events coordinates. @x and @y must
12857  * come from an event on the @tree_view only where <literal>event->window ==
12858  * gtk_tree_view_get_bin_window (<!-- -->)</literal>. It is primarily for
12859  * things like popup menus. If @path is non-%NULL, then it will be filled
12860  * with the #GtkTreePath at that point.  This path should be freed with
12861  * gtk_tree_path_free().  If @column is non-%NULL, then it will be filled
12862  * with the column at that point.  @cell_x and @cell_y return the coordinates
12863  * relative to the cell background (i.e. the @background_area passed to
12864  * gtk_cell_renderer_render()).  This function is only meaningful if
12865  * @tree_view is realized.  Therefore this function will always return %FALSE
12866  * if @tree_view is not realized or does not have a model.
12867  *
12868  * For converting widget coordinates (eg. the ones you get from
12869  * GtkWidget::query-tooltip), please see
12870  * gtk_tree_view_convert_widget_to_bin_window_coords().
12871  *
12872  * Return value: %TRUE if a row exists at that coordinate.
12873  **/
12874 gboolean
12875 gtk_tree_view_get_path_at_pos (GtkTreeView        *tree_view,
12876                                gint                x,
12877                                gint                y,
12878                                GtkTreePath       **path,
12879                                GtkTreeViewColumn **column,
12880                                gint               *cell_x,
12881                                gint               *cell_y)
12882 {
12883   GtkRBTree *tree;
12884   GtkRBNode *node;
12885   gint y_offset;
12886
12887   g_return_val_if_fail (tree_view != NULL, FALSE);
12888
12889   if (path)
12890     *path = NULL;
12891   if (column)
12892     *column = NULL;
12893
12894   if (tree_view->priv->bin_window == NULL)
12895     return FALSE;
12896
12897   if (tree_view->priv->tree == NULL)
12898     return FALSE;
12899
12900   if (x > tree_view->priv->hadjustment->upper)
12901     return FALSE;
12902
12903   if (x < 0 || y < 0)
12904     return FALSE;
12905
12906   if (column || cell_x)
12907     {
12908       GtkTreeViewColumn *tmp_column;
12909       GtkTreeViewColumn *last_column = NULL;
12910       GList *list;
12911       gint remaining_x = x;
12912       gboolean found = FALSE;
12913       gboolean rtl;
12914
12915       rtl = (gtk_widget_get_direction (GTK_WIDGET (tree_view)) == GTK_TEXT_DIR_RTL);
12916       for (list = (rtl ? g_list_last (tree_view->priv->columns) : g_list_first (tree_view->priv->columns));
12917            list;
12918            list = (rtl ? list->prev : list->next))
12919         {
12920           tmp_column = list->data;
12921
12922           if (tmp_column->visible == FALSE)
12923             continue;
12924
12925           last_column = tmp_column;
12926           if (remaining_x <= tmp_column->width)
12927             {
12928               found = TRUE;
12929
12930               if (column)
12931                 *column = tmp_column;
12932
12933               if (cell_x)
12934                 *cell_x = remaining_x;
12935
12936               break;
12937             }
12938           remaining_x -= tmp_column->width;
12939         }
12940
12941       /* If found is FALSE and there is a last_column, then it the remainder
12942        * space is in that area
12943        */
12944       if (!found)
12945         {
12946           if (last_column)
12947             {
12948               if (column)
12949                 *column = last_column;
12950
12951               if (cell_x)
12952                 *cell_x = last_column->width + remaining_x;
12953             }
12954           else
12955             {
12956               return FALSE;
12957             }
12958         }
12959     }
12960
12961   y_offset = _gtk_rbtree_find_offset (tree_view->priv->tree,
12962                                       TREE_WINDOW_Y_TO_RBTREE_Y (tree_view, y),
12963                                       &tree, &node);
12964
12965   if (tree == NULL)
12966     return FALSE;
12967
12968   if (cell_y)
12969     *cell_y = y_offset;
12970
12971   if (path)
12972     *path = _gtk_tree_view_find_path (tree_view, tree, node);
12973
12974   return TRUE;
12975 }
12976
12977
12978 /**
12979  * gtk_tree_view_get_cell_area:
12980  * @tree_view: a #GtkTreeView
12981  * @path: (allow-none): a #GtkTreePath for the row, or %NULL to get only horizontal coordinates
12982  * @column: (allow-none): a #GtkTreeViewColumn for the column, or %NULL to get only vertical coordinates
12983  * @rect: rectangle to fill with cell rect
12984  *
12985  * Fills the bounding rectangle in bin_window coordinates for the cell at the
12986  * row specified by @path and the column specified by @column.  If @path is
12987  * %NULL, or points to a path not currently displayed, the @y and @height fields
12988  * of the rectangle will be filled with 0. If @column is %NULL, the @x and @width
12989  * fields will be filled with 0.  The sum of all cell rects does not cover the
12990  * entire tree; there are extra pixels in between rows, for example. The
12991  * returned rectangle is equivalent to the @cell_area passed to
12992  * gtk_cell_renderer_render().  This function is only valid if @tree_view is
12993  * realized.
12994  **/
12995 void
12996 gtk_tree_view_get_cell_area (GtkTreeView        *tree_view,
12997                              GtkTreePath        *path,
12998                              GtkTreeViewColumn  *column,
12999                              GdkRectangle       *rect)
13000 {
13001   GtkAllocation allocation;
13002   GtkRBTree *tree = NULL;
13003   GtkRBNode *node = NULL;
13004   gint vertical_separator;
13005   gint horizontal_separator;
13006
13007   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
13008   g_return_if_fail (column == NULL || GTK_IS_TREE_VIEW_COLUMN (column));
13009   g_return_if_fail (rect != NULL);
13010   g_return_if_fail (!column || column->tree_view == (GtkWidget *) tree_view);
13011   g_return_if_fail (gtk_widget_get_realized (GTK_WIDGET (tree_view)));
13012
13013   gtk_widget_style_get (GTK_WIDGET (tree_view),
13014                         "vertical-separator", &vertical_separator,
13015                         "horizontal-separator", &horizontal_separator,
13016                         NULL);
13017
13018   rect->x = 0;
13019   rect->y = 0;
13020   rect->width = 0;
13021   rect->height = 0;
13022
13023   if (column)
13024     {
13025       gtk_widget_get_allocation (column->button, &allocation);
13026       rect->x = allocation.x + horizontal_separator/2;
13027       rect->width = allocation.width - horizontal_separator;
13028     }
13029
13030   if (path)
13031     {
13032       gboolean ret = _gtk_tree_view_find_node (tree_view, path, &tree, &node);
13033
13034       /* Get vertical coords */
13035       if ((!ret && tree == NULL) || ret)
13036         return;
13037
13038       rect->y = CELL_FIRST_PIXEL (tree_view, tree, node, vertical_separator);
13039       rect->height = MAX (CELL_HEIGHT (node, vertical_separator), tree_view->priv->expander_size - vertical_separator);
13040
13041       if (column &&
13042           gtk_tree_view_is_expander_column (tree_view, column))
13043         {
13044           gint depth = gtk_tree_path_get_depth (path);
13045           gboolean rtl;
13046
13047           rtl = gtk_widget_get_direction (GTK_WIDGET (tree_view)) == GTK_TEXT_DIR_RTL;
13048
13049           if (!rtl)
13050             rect->x += (depth - 1) * tree_view->priv->level_indentation;
13051           rect->width -= (depth - 1) * tree_view->priv->level_indentation;
13052
13053           if (TREE_VIEW_DRAW_EXPANDERS (tree_view))
13054             {
13055               if (!rtl)
13056                 rect->x += depth * tree_view->priv->expander_size;
13057               rect->width -= depth * tree_view->priv->expander_size;
13058             }
13059
13060           rect->width = MAX (rect->width, 0);
13061         }
13062     }
13063 }
13064
13065 /**
13066  * gtk_tree_view_get_background_area:
13067  * @tree_view: a #GtkTreeView
13068  * @path: (allow-none): a #GtkTreePath for the row, or %NULL to get only horizontal coordinates
13069  * @column: (allow-none): a #GtkTreeViewColumn for the column, or %NULL to get only vertical coordiantes
13070  * @rect: rectangle to fill with cell background rect
13071  *
13072  * Fills the bounding rectangle in bin_window coordinates for the cell at the
13073  * row specified by @path and the column specified by @column.  If @path is
13074  * %NULL, or points to a node not found in the tree, the @y and @height fields of
13075  * the rectangle will be filled with 0. If @column is %NULL, the @x and @width
13076  * fields will be filled with 0.  The returned rectangle is equivalent to the
13077  * @background_area passed to gtk_cell_renderer_render().  These background
13078  * areas tile to cover the entire bin window.  Contrast with the @cell_area,
13079  * returned by gtk_tree_view_get_cell_area(), which returns only the cell
13080  * itself, excluding surrounding borders and the tree expander area.
13081  *
13082  **/
13083 void
13084 gtk_tree_view_get_background_area (GtkTreeView        *tree_view,
13085                                    GtkTreePath        *path,
13086                                    GtkTreeViewColumn  *column,
13087                                    GdkRectangle       *rect)
13088 {
13089   GtkRBTree *tree = NULL;
13090   GtkRBNode *node = NULL;
13091
13092   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
13093   g_return_if_fail (column == NULL || GTK_IS_TREE_VIEW_COLUMN (column));
13094   g_return_if_fail (rect != NULL);
13095
13096   rect->x = 0;
13097   rect->y = 0;
13098   rect->width = 0;
13099   rect->height = 0;
13100
13101   if (path)
13102     {
13103       /* Get vertical coords */
13104
13105       if (!_gtk_tree_view_find_node (tree_view, path, &tree, &node) &&
13106           tree == NULL)
13107         return;
13108
13109       rect->y = BACKGROUND_FIRST_PIXEL (tree_view, tree, node);
13110
13111       rect->height = ROW_HEIGHT (tree_view, BACKGROUND_HEIGHT (node));
13112     }
13113
13114   if (column)
13115     {
13116       gint x2 = 0;
13117
13118       gtk_tree_view_get_background_xrange (tree_view, tree, column, &rect->x, &x2);
13119       rect->width = x2 - rect->x;
13120     }
13121 }
13122
13123 /**
13124  * gtk_tree_view_get_visible_rect:
13125  * @tree_view: a #GtkTreeView
13126  * @visible_rect: rectangle to fill
13127  *
13128  * Fills @visible_rect with the currently-visible region of the
13129  * buffer, in tree coordinates. Convert to bin_window coordinates with
13130  * gtk_tree_view_convert_tree_to_bin_window_coords().
13131  * Tree coordinates start at 0,0 for row 0 of the tree, and cover the entire
13132  * scrollable area of the tree.
13133  **/
13134 void
13135 gtk_tree_view_get_visible_rect (GtkTreeView  *tree_view,
13136                                 GdkRectangle *visible_rect)
13137 {
13138   GtkAllocation allocation;
13139   GtkWidget *widget;
13140
13141   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
13142
13143   widget = GTK_WIDGET (tree_view);
13144
13145   if (visible_rect)
13146     {
13147       gtk_widget_get_allocation (widget, &allocation);
13148       visible_rect->x = tree_view->priv->hadjustment->value;
13149       visible_rect->y = tree_view->priv->vadjustment->value;
13150       visible_rect->width = allocation.width;
13151       visible_rect->height = allocation.height - TREE_VIEW_HEADER_HEIGHT (tree_view);
13152     }
13153 }
13154
13155 /**
13156  * gtk_tree_view_convert_widget_to_tree_coords:
13157  * @tree_view: a #GtkTreeView
13158  * @wx: X coordinate relative to the widget
13159  * @wy: Y coordinate relative to the widget
13160  * @tx: return location for tree X coordinate
13161  * @ty: return location for tree Y coordinate
13162  *
13163  * Converts widget coordinates to coordinates for the
13164  * tree (the full scrollable area of the tree).
13165  *
13166  * Since: 2.12
13167  **/
13168 void
13169 gtk_tree_view_convert_widget_to_tree_coords (GtkTreeView *tree_view,
13170                                              gint         wx,
13171                                              gint         wy,
13172                                              gint        *tx,
13173                                              gint        *ty)
13174 {
13175   gint x, y;
13176
13177   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
13178
13179   gtk_tree_view_convert_widget_to_bin_window_coords (tree_view,
13180                                                      wx, wy,
13181                                                      &x, &y);
13182   gtk_tree_view_convert_bin_window_to_tree_coords (tree_view,
13183                                                    x, y,
13184                                                    tx, ty);
13185 }
13186
13187 /**
13188  * gtk_tree_view_convert_tree_to_widget_coords:
13189  * @tree_view: a #GtkTreeView
13190  * @tx: X coordinate relative to the tree
13191  * @ty: Y coordinate relative to the tree
13192  * @wx: return location for widget X coordinate
13193  * @wy: return location for widget Y coordinate
13194  *
13195  * Converts tree coordinates (coordinates in full scrollable area of the tree)
13196  * to widget coordinates.
13197  *
13198  * Since: 2.12
13199  **/
13200 void
13201 gtk_tree_view_convert_tree_to_widget_coords (GtkTreeView *tree_view,
13202                                              gint         tx,
13203                                              gint         ty,
13204                                              gint        *wx,
13205                                              gint        *wy)
13206 {
13207   gint x, y;
13208
13209   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
13210
13211   gtk_tree_view_convert_tree_to_bin_window_coords (tree_view,
13212                                                    tx, ty,
13213                                                    &x, &y);
13214   gtk_tree_view_convert_bin_window_to_widget_coords (tree_view,
13215                                                      x, y,
13216                                                      wx, wy);
13217 }
13218
13219 /**
13220  * gtk_tree_view_convert_widget_to_bin_window_coords:
13221  * @tree_view: a #GtkTreeView
13222  * @wx: X coordinate relative to the widget
13223  * @wy: Y coordinate relative to the widget
13224  * @bx: return location for bin_window X coordinate
13225  * @by: return location for bin_window Y coordinate
13226  *
13227  * Converts widget coordinates to coordinates for the bin_window
13228  * (see gtk_tree_view_get_bin_window()).
13229  *
13230  * Since: 2.12
13231  **/
13232 void
13233 gtk_tree_view_convert_widget_to_bin_window_coords (GtkTreeView *tree_view,
13234                                                    gint         wx,
13235                                                    gint         wy,
13236                                                    gint        *bx,
13237                                                    gint        *by)
13238 {
13239   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
13240
13241   if (bx)
13242     *bx = wx + tree_view->priv->hadjustment->value;
13243   if (by)
13244     *by = wy - TREE_VIEW_HEADER_HEIGHT (tree_view);
13245 }
13246
13247 /**
13248  * gtk_tree_view_convert_bin_window_to_widget_coords:
13249  * @tree_view: a #GtkTreeView
13250  * @bx: bin_window X coordinate
13251  * @by: bin_window Y coordinate
13252  * @wx: return location for widget X coordinate
13253  * @wy: return location for widget Y coordinate
13254  *
13255  * Converts bin_window coordinates (see gtk_tree_view_get_bin_window())
13256  * to widget relative coordinates.
13257  *
13258  * Since: 2.12
13259  **/
13260 void
13261 gtk_tree_view_convert_bin_window_to_widget_coords (GtkTreeView *tree_view,
13262                                                    gint         bx,
13263                                                    gint         by,
13264                                                    gint        *wx,
13265                                                    gint        *wy)
13266 {
13267   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
13268
13269   if (wx)
13270     *wx = bx - tree_view->priv->hadjustment->value;
13271   if (wy)
13272     *wy = by + TREE_VIEW_HEADER_HEIGHT (tree_view);
13273 }
13274
13275 /**
13276  * gtk_tree_view_convert_tree_to_bin_window_coords:
13277  * @tree_view: a #GtkTreeView
13278  * @tx: tree X coordinate
13279  * @ty: tree Y coordinate
13280  * @bx: return location for X coordinate relative to bin_window
13281  * @by: return location for Y coordinate relative to bin_window
13282  *
13283  * Converts tree coordinates (coordinates in full scrollable area of the tree)
13284  * to bin_window coordinates.
13285  *
13286  * Since: 2.12
13287  **/
13288 void
13289 gtk_tree_view_convert_tree_to_bin_window_coords (GtkTreeView *tree_view,
13290                                                  gint         tx,
13291                                                  gint         ty,
13292                                                  gint        *bx,
13293                                                  gint        *by)
13294 {
13295   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
13296
13297   if (bx)
13298     *bx = tx;
13299   if (by)
13300     *by = ty - tree_view->priv->dy;
13301 }
13302
13303 /**
13304  * gtk_tree_view_convert_bin_window_to_tree_coords:
13305  * @tree_view: a #GtkTreeView
13306  * @bx: X coordinate relative to bin_window
13307  * @by: Y coordinate relative to bin_window
13308  * @tx: return location for tree X coordinate
13309  * @ty: return location for tree Y coordinate
13310  *
13311  * Converts bin_window coordinates to coordinates for the
13312  * tree (the full scrollable area of the tree).
13313  *
13314  * Since: 2.12
13315  **/
13316 void
13317 gtk_tree_view_convert_bin_window_to_tree_coords (GtkTreeView *tree_view,
13318                                                  gint         bx,
13319                                                  gint         by,
13320                                                  gint        *tx,
13321                                                  gint        *ty)
13322 {
13323   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
13324
13325   if (tx)
13326     *tx = bx;
13327   if (ty)
13328     *ty = by + tree_view->priv->dy;
13329 }
13330
13331
13332
13333 /**
13334  * gtk_tree_view_get_visible_range:
13335  * @tree_view: A #GtkTreeView
13336  * @start_path: (allow-none): Return location for start of region, or %NULL.
13337  * @end_path: (allow-none): Return location for end of region, or %NULL.
13338  *
13339  * Sets @start_path and @end_path to be the first and last visible path.
13340  * Note that there may be invisible paths in between.
13341  *
13342  * The paths should be freed with gtk_tree_path_free() after use.
13343  *
13344  * Returns: %TRUE, if valid paths were placed in @start_path and @end_path.
13345  *
13346  * Since: 2.8
13347  **/
13348 gboolean
13349 gtk_tree_view_get_visible_range (GtkTreeView  *tree_view,
13350                                  GtkTreePath **start_path,
13351                                  GtkTreePath **end_path)
13352 {
13353   GtkRBTree *tree;
13354   GtkRBNode *node;
13355   gboolean retval;
13356
13357   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), FALSE);
13358
13359   if (!tree_view->priv->tree)
13360     return FALSE;
13361
13362   retval = TRUE;
13363
13364   if (start_path)
13365     {
13366       _gtk_rbtree_find_offset (tree_view->priv->tree,
13367                                TREE_WINDOW_Y_TO_RBTREE_Y (tree_view, 0),
13368                                &tree, &node);
13369       if (node)
13370         *start_path = _gtk_tree_view_find_path (tree_view, tree, node);
13371       else
13372         retval = FALSE;
13373     }
13374
13375   if (end_path)
13376     {
13377       gint y;
13378
13379       if (tree_view->priv->height < tree_view->priv->vadjustment->page_size)
13380         y = tree_view->priv->height - 1;
13381       else
13382         y = TREE_WINDOW_Y_TO_RBTREE_Y (tree_view, tree_view->priv->vadjustment->page_size) - 1;
13383
13384       _gtk_rbtree_find_offset (tree_view->priv->tree, y, &tree, &node);
13385       if (node)
13386         *end_path = _gtk_tree_view_find_path (tree_view, tree, node);
13387       else
13388         retval = FALSE;
13389     }
13390
13391   return retval;
13392 }
13393
13394 static void
13395 unset_reorderable (GtkTreeView *tree_view)
13396 {
13397   if (tree_view->priv->reorderable)
13398     {
13399       tree_view->priv->reorderable = FALSE;
13400       g_object_notify (G_OBJECT (tree_view), "reorderable");
13401     }
13402 }
13403
13404 /**
13405  * gtk_tree_view_enable_model_drag_source:
13406  * @tree_view: a #GtkTreeView
13407  * @start_button_mask: Mask of allowed buttons to start drag
13408  * @targets: the table of targets that the drag will support
13409  * @n_targets: the number of items in @targets
13410  * @actions: the bitmask of possible actions for a drag from this
13411  *    widget
13412  *
13413  * Turns @tree_view into a drag source for automatic DND. Calling this
13414  * method sets #GtkTreeView:reorderable to %FALSE.
13415  **/
13416 void
13417 gtk_tree_view_enable_model_drag_source (GtkTreeView              *tree_view,
13418                                         GdkModifierType           start_button_mask,
13419                                         const GtkTargetEntry     *targets,
13420                                         gint                      n_targets,
13421                                         GdkDragAction             actions)
13422 {
13423   TreeViewDragInfo *di;
13424
13425   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
13426
13427   gtk_drag_source_set (GTK_WIDGET (tree_view),
13428                        0,
13429                        targets,
13430                        n_targets,
13431                        actions);
13432
13433   di = ensure_info (tree_view);
13434
13435   di->start_button_mask = start_button_mask;
13436   di->source_actions = actions;
13437   di->source_set = TRUE;
13438
13439   unset_reorderable (tree_view);
13440 }
13441
13442 /**
13443  * gtk_tree_view_enable_model_drag_dest:
13444  * @tree_view: a #GtkTreeView
13445  * @targets: the table of targets that the drag will support
13446  * @n_targets: the number of items in @targets
13447  * @actions: the bitmask of possible actions for a drag from this
13448  *    widget
13449  *
13450  * Turns @tree_view into a drop destination for automatic DND. Calling
13451  * this method sets #GtkTreeView:reorderable to %FALSE.
13452  **/
13453 void
13454 gtk_tree_view_enable_model_drag_dest (GtkTreeView              *tree_view,
13455                                       const GtkTargetEntry     *targets,
13456                                       gint                      n_targets,
13457                                       GdkDragAction             actions)
13458 {
13459   TreeViewDragInfo *di;
13460
13461   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
13462
13463   gtk_drag_dest_set (GTK_WIDGET (tree_view),
13464                      0,
13465                      targets,
13466                      n_targets,
13467                      actions);
13468
13469   di = ensure_info (tree_view);
13470   di->dest_set = TRUE;
13471
13472   unset_reorderable (tree_view);
13473 }
13474
13475 /**
13476  * gtk_tree_view_unset_rows_drag_source:
13477  * @tree_view: a #GtkTreeView
13478  *
13479  * Undoes the effect of
13480  * gtk_tree_view_enable_model_drag_source(). Calling this method sets
13481  * #GtkTreeView:reorderable to %FALSE.
13482  **/
13483 void
13484 gtk_tree_view_unset_rows_drag_source (GtkTreeView *tree_view)
13485 {
13486   TreeViewDragInfo *di;
13487
13488   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
13489
13490   di = get_info (tree_view);
13491
13492   if (di)
13493     {
13494       if (di->source_set)
13495         {
13496           gtk_drag_source_unset (GTK_WIDGET (tree_view));
13497           di->source_set = FALSE;
13498         }
13499
13500       if (!di->dest_set && !di->source_set)
13501         remove_info (tree_view);
13502     }
13503
13504   unset_reorderable (tree_view);
13505 }
13506
13507 /**
13508  * gtk_tree_view_unset_rows_drag_dest:
13509  * @tree_view: a #GtkTreeView
13510  *
13511  * Undoes the effect of
13512  * gtk_tree_view_enable_model_drag_dest(). Calling this method sets
13513  * #GtkTreeView:reorderable to %FALSE.
13514  **/
13515 void
13516 gtk_tree_view_unset_rows_drag_dest (GtkTreeView *tree_view)
13517 {
13518   TreeViewDragInfo *di;
13519
13520   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
13521
13522   di = get_info (tree_view);
13523
13524   if (di)
13525     {
13526       if (di->dest_set)
13527         {
13528           gtk_drag_dest_unset (GTK_WIDGET (tree_view));
13529           di->dest_set = FALSE;
13530         }
13531
13532       if (!di->dest_set && !di->source_set)
13533         remove_info (tree_view);
13534     }
13535
13536   unset_reorderable (tree_view);
13537 }
13538
13539 /**
13540  * gtk_tree_view_set_drag_dest_row:
13541  * @tree_view: a #GtkTreeView
13542  * @path: (allow-none): The path of the row to highlight, or %NULL.
13543  * @pos: Specifies whether to drop before, after or into the row
13544  *
13545  * Sets the row that is highlighted for feedback.
13546  **/
13547 void
13548 gtk_tree_view_set_drag_dest_row (GtkTreeView            *tree_view,
13549                                  GtkTreePath            *path,
13550                                  GtkTreeViewDropPosition pos)
13551 {
13552   GtkTreePath *current_dest;
13553
13554   /* Note; this function is exported to allow a custom DND
13555    * implementation, so it can't touch TreeViewDragInfo
13556    */
13557
13558   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
13559
13560   current_dest = NULL;
13561
13562   if (tree_view->priv->drag_dest_row)
13563     {
13564       current_dest = gtk_tree_row_reference_get_path (tree_view->priv->drag_dest_row);
13565       gtk_tree_row_reference_free (tree_view->priv->drag_dest_row);
13566     }
13567
13568   /* special case a drop on an empty model */
13569   tree_view->priv->empty_view_drop = 0;
13570
13571   if (pos == GTK_TREE_VIEW_DROP_BEFORE && path
13572       && gtk_tree_path_get_depth (path) == 1
13573       && gtk_tree_path_get_indices (path)[0] == 0)
13574     {
13575       gint n_children;
13576
13577       n_children = gtk_tree_model_iter_n_children (tree_view->priv->model,
13578                                                    NULL);
13579
13580       if (!n_children)
13581         tree_view->priv->empty_view_drop = 1;
13582     }
13583
13584   tree_view->priv->drag_dest_pos = pos;
13585
13586   if (path)
13587     {
13588       tree_view->priv->drag_dest_row =
13589         gtk_tree_row_reference_new_proxy (G_OBJECT (tree_view), tree_view->priv->model, path);
13590       gtk_tree_view_queue_draw_path (tree_view, path, NULL);
13591     }
13592   else
13593     tree_view->priv->drag_dest_row = NULL;
13594
13595   if (current_dest)
13596     {
13597       GtkRBTree *tree, *new_tree;
13598       GtkRBNode *node, *new_node;
13599
13600       _gtk_tree_view_find_node (tree_view, current_dest, &tree, &node);
13601       _gtk_tree_view_queue_draw_node (tree_view, tree, node, NULL);
13602
13603       if (tree && node)
13604         {
13605           _gtk_rbtree_next_full (tree, node, &new_tree, &new_node);
13606           if (new_tree && new_node)
13607             _gtk_tree_view_queue_draw_node (tree_view, new_tree, new_node, NULL);
13608
13609           _gtk_rbtree_prev_full (tree, node, &new_tree, &new_node);
13610           if (new_tree && new_node)
13611             _gtk_tree_view_queue_draw_node (tree_view, new_tree, new_node, NULL);
13612         }
13613       gtk_tree_path_free (current_dest);
13614     }
13615 }
13616
13617 /**
13618  * gtk_tree_view_get_drag_dest_row:
13619  * @tree_view: a #GtkTreeView
13620  * @path: (out) (allow-none): Return location for the path of the highlighted row, or %NULL.
13621  * @pos: (out) (allow-none): Return location for the drop position, or %NULL
13622  *
13623  * Gets information about the row that is highlighted for feedback.
13624  **/
13625 void
13626 gtk_tree_view_get_drag_dest_row (GtkTreeView              *tree_view,
13627                                  GtkTreePath             **path,
13628                                  GtkTreeViewDropPosition  *pos)
13629 {
13630   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
13631
13632   if (path)
13633     {
13634       if (tree_view->priv->drag_dest_row)
13635         *path = gtk_tree_row_reference_get_path (tree_view->priv->drag_dest_row);
13636       else
13637         {
13638           if (tree_view->priv->empty_view_drop)
13639             *path = gtk_tree_path_new_from_indices (0, -1);
13640           else
13641             *path = NULL;
13642         }
13643     }
13644
13645   if (pos)
13646     *pos = tree_view->priv->drag_dest_pos;
13647 }
13648
13649 /**
13650  * gtk_tree_view_get_dest_row_at_pos:
13651  * @tree_view: a #GtkTreeView
13652  * @drag_x: the position to determine the destination row for
13653  * @drag_y: the position to determine the destination row for
13654  * @path: (out) (allow-none): Return location for the path of the highlighted row, or %NULL.
13655  * @pos: (out) (allow-none): Return location for the drop position, or %NULL
13656  *
13657  * Determines the destination row for a given position.  @drag_x and
13658  * @drag_y are expected to be in widget coordinates.  This function is only
13659  * meaningful if @tree_view is realized.  Therefore this function will always
13660  * return %FALSE if @tree_view is not realized or does not have a model.
13661  *
13662  * Return value: whether there is a row at the given position, %TRUE if this
13663  * is indeed the case.
13664  **/
13665 gboolean
13666 gtk_tree_view_get_dest_row_at_pos (GtkTreeView             *tree_view,
13667                                    gint                     drag_x,
13668                                    gint                     drag_y,
13669                                    GtkTreePath            **path,
13670                                    GtkTreeViewDropPosition *pos)
13671 {
13672   gint cell_y;
13673   gint bin_x, bin_y;
13674   gdouble offset_into_row;
13675   gdouble third;
13676   GdkRectangle cell;
13677   GtkTreeViewColumn *column = NULL;
13678   GtkTreePath *tmp_path = NULL;
13679
13680   /* Note; this function is exported to allow a custom DND
13681    * implementation, so it can't touch TreeViewDragInfo
13682    */
13683
13684   g_return_val_if_fail (tree_view != NULL, FALSE);
13685   g_return_val_if_fail (drag_x >= 0, FALSE);
13686   g_return_val_if_fail (drag_y >= 0, FALSE);
13687
13688   if (path)
13689     *path = NULL;
13690
13691   if (tree_view->priv->bin_window == NULL)
13692     return FALSE;
13693
13694   if (tree_view->priv->tree == NULL)
13695     return FALSE;
13696
13697   /* If in the top third of a row, we drop before that row; if
13698    * in the bottom third, drop after that row; if in the middle,
13699    * and the row has children, drop into the row.
13700    */
13701   gtk_tree_view_convert_widget_to_bin_window_coords (tree_view, drag_x, drag_y,
13702                                                      &bin_x, &bin_y);
13703
13704   if (!gtk_tree_view_get_path_at_pos (tree_view,
13705                                       bin_x,
13706                                       bin_y,
13707                                       &tmp_path,
13708                                       &column,
13709                                       NULL,
13710                                       &cell_y))
13711     return FALSE;
13712
13713   gtk_tree_view_get_background_area (tree_view, tmp_path, column,
13714                                      &cell);
13715
13716   offset_into_row = cell_y;
13717
13718   if (path)
13719     *path = tmp_path;
13720   else
13721     gtk_tree_path_free (tmp_path);
13722
13723   tmp_path = NULL;
13724
13725   third = cell.height / 3.0;
13726
13727   if (pos)
13728     {
13729       if (offset_into_row < third)
13730         {
13731           *pos = GTK_TREE_VIEW_DROP_BEFORE;
13732         }
13733       else if (offset_into_row < (cell.height / 2.0))
13734         {
13735           *pos = GTK_TREE_VIEW_DROP_INTO_OR_BEFORE;
13736         }
13737       else if (offset_into_row < third * 2.0)
13738         {
13739           *pos = GTK_TREE_VIEW_DROP_INTO_OR_AFTER;
13740         }
13741       else
13742         {
13743           *pos = GTK_TREE_VIEW_DROP_AFTER;
13744         }
13745     }
13746
13747   return TRUE;
13748 }
13749
13750
13751
13752 /* KEEP IN SYNC WITH GTK_TREE_VIEW_BIN_EXPOSE */
13753 /**
13754  * gtk_tree_view_create_row_drag_icon:
13755  * @tree_view: a #GtkTreeView
13756  * @path: a #GtkTreePath in @tree_view
13757  *
13758  * Creates a #GdkPixmap representation of the row at @path.
13759  * This image is used for a drag icon.
13760  *
13761  * Return value: a newly-allocated pixmap of the drag icon.
13762  **/
13763 GdkPixmap *
13764 gtk_tree_view_create_row_drag_icon (GtkTreeView  *tree_view,
13765                                     GtkTreePath  *path)
13766 {
13767   GtkTreeIter   iter;
13768   GtkRBTree    *tree;
13769   GtkRBNode    *node;
13770   GtkStyle *style;
13771   gint cell_offset;
13772   GList *list;
13773   GdkRectangle background_area;
13774   GdkRectangle expose_area;
13775   GtkWidget *widget;
13776   gint depth;
13777   /* start drawing inside the black outline */
13778   gint x = 1, y = 1;
13779   GdkDrawable *drawable;
13780   gint bin_window_width;
13781   gboolean is_separator = FALSE;
13782   gboolean rtl;
13783   cairo_t *cr;
13784
13785   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), NULL);
13786   g_return_val_if_fail (path != NULL, NULL);
13787
13788   widget = GTK_WIDGET (tree_view);
13789
13790   if (!gtk_widget_get_realized (widget))
13791     return NULL;
13792
13793   depth = gtk_tree_path_get_depth (path);
13794
13795   _gtk_tree_view_find_node (tree_view,
13796                             path,
13797                             &tree,
13798                             &node);
13799
13800   if (tree == NULL)
13801     return NULL;
13802
13803   if (!gtk_tree_model_get_iter (tree_view->priv->model,
13804                                 &iter,
13805                                 path))
13806     return NULL;
13807
13808   style = gtk_widget_get_style (widget);
13809
13810   is_separator = row_is_separator (tree_view, &iter, NULL);
13811
13812   cell_offset = x;
13813
13814   background_area.y = y;
13815   background_area.height = ROW_HEIGHT (tree_view, BACKGROUND_HEIGHT (node));
13816
13817   gdk_drawable_get_size (tree_view->priv->bin_window,
13818                          &bin_window_width, NULL);
13819
13820   drawable = gdk_pixmap_new (tree_view->priv->bin_window,
13821                              bin_window_width + 2,
13822                              background_area.height + 2,
13823                              -1);
13824
13825   expose_area.x = 0;
13826   expose_area.y = 0;
13827   expose_area.width = bin_window_width + 2;
13828   expose_area.height = background_area.height + 2;
13829
13830   cr = gdk_cairo_create (drawable);
13831   gdk_cairo_set_source_color (cr, &style->base [gtk_widget_get_state (widget)]);
13832   cairo_paint (cr);
13833
13834   rtl = gtk_widget_get_direction (GTK_WIDGET (tree_view)) == GTK_TEXT_DIR_RTL;
13835
13836   for (list = (rtl ? g_list_last (tree_view->priv->columns) : g_list_first (tree_view->priv->columns));
13837       list;
13838       list = (rtl ? list->prev : list->next))
13839     {
13840       GtkTreeViewColumn *column = list->data;
13841       GdkRectangle cell_area;
13842       gint vertical_separator;
13843
13844       if (!column->visible)
13845         continue;
13846
13847       gtk_tree_view_column_cell_set_cell_data (column, tree_view->priv->model, &iter,
13848                                                GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_PARENT),
13849                                                node->children?TRUE:FALSE);
13850
13851       background_area.x = cell_offset;
13852       background_area.width = column->width;
13853
13854       gtk_widget_style_get (widget,
13855                             "vertical-separator", &vertical_separator,
13856                             NULL);
13857
13858       cell_area = background_area;
13859
13860       cell_area.y += vertical_separator / 2;
13861       cell_area.height -= vertical_separator;
13862
13863       if (gtk_tree_view_is_expander_column (tree_view, column))
13864         {
13865           if (!rtl)
13866             cell_area.x += (depth - 1) * tree_view->priv->level_indentation;
13867           cell_area.width -= (depth - 1) * tree_view->priv->level_indentation;
13868
13869           if (TREE_VIEW_DRAW_EXPANDERS(tree_view))
13870             {
13871               if (!rtl)
13872                 cell_area.x += depth * tree_view->priv->expander_size;
13873               cell_area.width -= depth * tree_view->priv->expander_size;
13874             }
13875         }
13876
13877       if (gtk_tree_view_column_cell_is_visible (column))
13878         {
13879           if (is_separator)
13880             gtk_paint_hline (style,
13881                              drawable,
13882                              GTK_STATE_NORMAL,
13883                              &cell_area,
13884                              widget,
13885                              NULL,
13886                              cell_area.x,
13887                              cell_area.x + cell_area.width,
13888                              cell_area.y + cell_area.height / 2);
13889           else
13890             _gtk_tree_view_column_cell_render (column,
13891                                                drawable,
13892                                                &background_area,
13893                                                &cell_area,
13894                                                &expose_area,
13895                                                0);
13896         }
13897       cell_offset += column->width;
13898     }
13899
13900   cairo_set_source_rgb (cr, 0, 0, 0);
13901   cairo_rectangle (cr,
13902                    0.5, 0.5,
13903                    bin_window_width + 1,
13904                    background_area.height + 1);
13905   cairo_set_line_width (cr, 1.0);
13906   cairo_stroke (cr);
13907
13908   cairo_destroy (cr);
13909
13910   return drawable;
13911 }
13912
13913
13914 /**
13915  * gtk_tree_view_set_destroy_count_func:
13916  * @tree_view: A #GtkTreeView
13917  * @func: (allow-none): Function to be called when a view row is destroyed, or %NULL
13918  * @data: (allow-none): User data to be passed to @func, or %NULL
13919  * @destroy: (allow-none): Destroy notifier for @data, or %NULL
13920  *
13921  * This function should almost never be used.  It is meant for private use by
13922  * ATK for determining the number of visible children that are removed when the
13923  * user collapses a row, or a row is deleted.
13924  **/
13925 void
13926 gtk_tree_view_set_destroy_count_func (GtkTreeView             *tree_view,
13927                                       GtkTreeDestroyCountFunc  func,
13928                                       gpointer                 data,
13929                                       GDestroyNotify           destroy)
13930 {
13931   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
13932
13933   if (tree_view->priv->destroy_count_destroy)
13934     tree_view->priv->destroy_count_destroy (tree_view->priv->destroy_count_data);
13935
13936   tree_view->priv->destroy_count_func = func;
13937   tree_view->priv->destroy_count_data = data;
13938   tree_view->priv->destroy_count_destroy = destroy;
13939 }
13940
13941
13942 /*
13943  * Interactive search
13944  */
13945
13946 /**
13947  * gtk_tree_view_set_enable_search:
13948  * @tree_view: A #GtkTreeView
13949  * @enable_search: %TRUE, if the user can search interactively
13950  *
13951  * If @enable_search is set, then the user can type in text to search through
13952  * the tree interactively (this is sometimes called "typeahead find").
13953  *
13954  * Note that even if this is %FALSE, the user can still initiate a search
13955  * using the "start-interactive-search" key binding.
13956  */
13957 void
13958 gtk_tree_view_set_enable_search (GtkTreeView *tree_view,
13959                                  gboolean     enable_search)
13960 {
13961   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
13962
13963   enable_search = !!enable_search;
13964
13965   if (tree_view->priv->enable_search != enable_search)
13966     {
13967        tree_view->priv->enable_search = enable_search;
13968        g_object_notify (G_OBJECT (tree_view), "enable-search");
13969     }
13970 }
13971
13972 /**
13973  * gtk_tree_view_get_enable_search:
13974  * @tree_view: A #GtkTreeView
13975  *
13976  * Returns whether or not the tree allows to start interactive searching
13977  * by typing in text.
13978  *
13979  * Return value: whether or not to let the user search interactively
13980  */
13981 gboolean
13982 gtk_tree_view_get_enable_search (GtkTreeView *tree_view)
13983 {
13984   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), FALSE);
13985
13986   return tree_view->priv->enable_search;
13987 }
13988
13989
13990 /**
13991  * gtk_tree_view_get_search_column:
13992  * @tree_view: A #GtkTreeView
13993  *
13994  * Gets the column searched on by the interactive search code.
13995  *
13996  * Return value: the column the interactive search code searches in.
13997  */
13998 gint
13999 gtk_tree_view_get_search_column (GtkTreeView *tree_view)
14000 {
14001   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), -1);
14002
14003   return (tree_view->priv->search_column);
14004 }
14005
14006 /**
14007  * gtk_tree_view_set_search_column:
14008  * @tree_view: A #GtkTreeView
14009  * @column: the column of the model to search in, or -1 to disable searching
14010  *
14011  * Sets @column as the column where the interactive search code should
14012  * search in for the current model.
14013  *
14014  * If the search column is set, users can use the "start-interactive-search"
14015  * key binding to bring up search popup. The enable-search property controls
14016  * whether simply typing text will also start an interactive search.
14017  *
14018  * Note that @column refers to a column of the current model. The search
14019  * column is reset to -1 when the model is changed.
14020  */
14021 void
14022 gtk_tree_view_set_search_column (GtkTreeView *tree_view,
14023                                  gint         column)
14024 {
14025   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
14026   g_return_if_fail (column >= -1);
14027
14028   if (tree_view->priv->search_column == column)
14029     return;
14030
14031   tree_view->priv->search_column = column;
14032   g_object_notify (G_OBJECT (tree_view), "search-column");
14033 }
14034
14035 /**
14036  * gtk_tree_view_get_search_equal_func:
14037  * @tree_view: A #GtkTreeView
14038  *
14039  * Returns the compare function currently in use.
14040  *
14041  * Return value: the currently used compare function for the search code.
14042  */
14043
14044 GtkTreeViewSearchEqualFunc
14045 gtk_tree_view_get_search_equal_func (GtkTreeView *tree_view)
14046 {
14047   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), NULL);
14048
14049   return tree_view->priv->search_equal_func;
14050 }
14051
14052 /**
14053  * gtk_tree_view_set_search_equal_func:
14054  * @tree_view: A #GtkTreeView
14055  * @search_equal_func: the compare function to use during the search
14056  * @search_user_data: (allow-none): user data to pass to @search_equal_func, or %NULL
14057  * @search_destroy: (allow-none): Destroy notifier for @search_user_data, or %NULL
14058  *
14059  * Sets the compare function for the interactive search capabilities; note
14060  * that somewhat like strcmp() returning 0 for equality
14061  * #GtkTreeViewSearchEqualFunc returns %FALSE on matches.
14062  **/
14063 void
14064 gtk_tree_view_set_search_equal_func (GtkTreeView                *tree_view,
14065                                      GtkTreeViewSearchEqualFunc  search_equal_func,
14066                                      gpointer                    search_user_data,
14067                                      GDestroyNotify              search_destroy)
14068 {
14069   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
14070   g_return_if_fail (search_equal_func != NULL);
14071
14072   if (tree_view->priv->search_destroy)
14073     tree_view->priv->search_destroy (tree_view->priv->search_user_data);
14074
14075   tree_view->priv->search_equal_func = search_equal_func;
14076   tree_view->priv->search_user_data = search_user_data;
14077   tree_view->priv->search_destroy = search_destroy;
14078   if (tree_view->priv->search_equal_func == NULL)
14079     tree_view->priv->search_equal_func = gtk_tree_view_search_equal_func;
14080 }
14081
14082 /**
14083  * gtk_tree_view_get_search_entry:
14084  * @tree_view: A #GtkTreeView
14085  *
14086  * Returns the #GtkEntry which is currently in use as interactive search
14087  * entry for @tree_view.  In case the built-in entry is being used, %NULL
14088  * will be returned.
14089  *
14090  * Return value: the entry currently in use as search entry.
14091  *
14092  * Since: 2.10
14093  */
14094 GtkEntry *
14095 gtk_tree_view_get_search_entry (GtkTreeView *tree_view)
14096 {
14097   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), NULL);
14098
14099   if (tree_view->priv->search_custom_entry_set)
14100     return GTK_ENTRY (tree_view->priv->search_entry);
14101
14102   return NULL;
14103 }
14104
14105 /**
14106  * gtk_tree_view_set_search_entry:
14107  * @tree_view: A #GtkTreeView
14108  * @entry: (allow-none): the entry the interactive search code of @tree_view should use or %NULL
14109  *
14110  * Sets the entry which the interactive search code will use for this
14111  * @tree_view.  This is useful when you want to provide a search entry
14112  * in our interface at all time at a fixed position.  Passing %NULL for
14113  * @entry will make the interactive search code use the built-in popup
14114  * entry again.
14115  *
14116  * Since: 2.10
14117  */
14118 void
14119 gtk_tree_view_set_search_entry (GtkTreeView *tree_view,
14120                                 GtkEntry    *entry)
14121 {
14122   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
14123   g_return_if_fail (entry == NULL || GTK_IS_ENTRY (entry));
14124
14125   if (tree_view->priv->search_custom_entry_set)
14126     {
14127       if (tree_view->priv->search_entry_changed_id)
14128         {
14129           g_signal_handler_disconnect (tree_view->priv->search_entry,
14130                                        tree_view->priv->search_entry_changed_id);
14131           tree_view->priv->search_entry_changed_id = 0;
14132         }
14133       g_signal_handlers_disconnect_by_func (tree_view->priv->search_entry,
14134                                             G_CALLBACK (gtk_tree_view_search_key_press_event),
14135                                             tree_view);
14136
14137       g_object_unref (tree_view->priv->search_entry);
14138     }
14139   else if (tree_view->priv->search_window)
14140     {
14141       gtk_widget_destroy (tree_view->priv->search_window);
14142
14143       tree_view->priv->search_window = NULL;
14144     }
14145
14146   if (entry)
14147     {
14148       tree_view->priv->search_entry = g_object_ref (entry);
14149       tree_view->priv->search_custom_entry_set = TRUE;
14150
14151       if (tree_view->priv->search_entry_changed_id == 0)
14152         {
14153           tree_view->priv->search_entry_changed_id =
14154             g_signal_connect (tree_view->priv->search_entry, "changed",
14155                               G_CALLBACK (gtk_tree_view_search_init),
14156                               tree_view);
14157         }
14158
14159         g_signal_connect (tree_view->priv->search_entry, "key-press-event",
14160                           G_CALLBACK (gtk_tree_view_search_key_press_event),
14161                           tree_view);
14162
14163         gtk_tree_view_search_init (tree_view->priv->search_entry, tree_view);
14164     }
14165   else
14166     {
14167       tree_view->priv->search_entry = NULL;
14168       tree_view->priv->search_custom_entry_set = FALSE;
14169     }
14170 }
14171
14172 /**
14173  * gtk_tree_view_set_search_position_func:
14174  * @tree_view: A #GtkTreeView
14175  * @func: (allow-none): the function to use to position the search dialog, or %NULL
14176  *    to use the default search position function
14177  * @data: (allow-none): user data to pass to @func, or %NULL
14178  * @destroy: (allow-none): Destroy notifier for @data, or %NULL
14179  *
14180  * Sets the function to use when positioning the search dialog.
14181  *
14182  * Since: 2.10
14183  **/
14184 void
14185 gtk_tree_view_set_search_position_func (GtkTreeView                   *tree_view,
14186                                         GtkTreeViewSearchPositionFunc  func,
14187                                         gpointer                       user_data,
14188                                         GDestroyNotify                 destroy)
14189 {
14190   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
14191
14192   if (tree_view->priv->search_position_destroy)
14193     tree_view->priv->search_position_destroy (tree_view->priv->search_position_user_data);
14194
14195   tree_view->priv->search_position_func = func;
14196   tree_view->priv->search_position_user_data = user_data;
14197   tree_view->priv->search_position_destroy = destroy;
14198   if (tree_view->priv->search_position_func == NULL)
14199     tree_view->priv->search_position_func = gtk_tree_view_search_position_func;
14200 }
14201
14202 /**
14203  * gtk_tree_view_get_search_position_func:
14204  * @tree_view: A #GtkTreeView
14205  *
14206  * Returns the positioning function currently in use.
14207  *
14208  * Return value: the currently used function for positioning the search dialog.
14209  *
14210  * Since: 2.10
14211  */
14212 GtkTreeViewSearchPositionFunc
14213 gtk_tree_view_get_search_position_func (GtkTreeView *tree_view)
14214 {
14215   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), NULL);
14216
14217   return tree_view->priv->search_position_func;
14218 }
14219
14220
14221 static void
14222 gtk_tree_view_search_dialog_hide (GtkWidget   *search_dialog,
14223                                   GtkTreeView *tree_view,
14224                                   GdkDevice   *device)
14225 {
14226   if (tree_view->priv->disable_popdown)
14227     return;
14228
14229   if (tree_view->priv->search_entry_changed_id)
14230     {
14231       g_signal_handler_disconnect (tree_view->priv->search_entry,
14232                                    tree_view->priv->search_entry_changed_id);
14233       tree_view->priv->search_entry_changed_id = 0;
14234     }
14235   if (tree_view->priv->typeselect_flush_timeout)
14236     {
14237       g_source_remove (tree_view->priv->typeselect_flush_timeout);
14238       tree_view->priv->typeselect_flush_timeout = 0;
14239     }
14240
14241   if (gtk_widget_get_visible (search_dialog))
14242     {
14243       /* send focus-in event */
14244       send_focus_change (GTK_WIDGET (tree_view->priv->search_entry), device, FALSE);
14245       gtk_widget_hide (search_dialog);
14246       gtk_entry_set_text (GTK_ENTRY (tree_view->priv->search_entry), "");
14247       send_focus_change (GTK_WIDGET (tree_view), device, TRUE);
14248     }
14249 }
14250
14251 static void
14252 gtk_tree_view_search_position_func (GtkTreeView *tree_view,
14253                                     GtkWidget   *search_dialog,
14254                                     gpointer     user_data)
14255 {
14256   gint x, y;
14257   gint tree_x, tree_y;
14258   gint tree_width, tree_height;
14259   GdkWindow *tree_window = gtk_widget_get_window (GTK_WIDGET (tree_view));
14260   GdkScreen *screen = gdk_drawable_get_screen (tree_window);
14261   GtkRequisition requisition;
14262   gint monitor_num;
14263   GdkRectangle monitor;
14264
14265   monitor_num = gdk_screen_get_monitor_at_window (screen, tree_window);
14266   gdk_screen_get_monitor_geometry (screen, monitor_num, &monitor);
14267
14268   gtk_widget_realize (search_dialog);
14269
14270   gdk_window_get_origin (tree_window, &tree_x, &tree_y);
14271   gdk_drawable_get_size (tree_window,
14272                          &tree_width,
14273                          &tree_height);
14274   gtk_widget_size_request (search_dialog, &requisition);
14275
14276   if (tree_x + tree_width > gdk_screen_get_width (screen))
14277     x = gdk_screen_get_width (screen) - requisition.width;
14278   else if (tree_x + tree_width - requisition.width < 0)
14279     x = 0;
14280   else
14281     x = tree_x + tree_width - requisition.width;
14282
14283   if (tree_y + tree_height + requisition.height > gdk_screen_get_height (screen))
14284     y = gdk_screen_get_height (screen) - requisition.height;
14285   else if (tree_y + tree_height < 0) /* isn't really possible ... */
14286     y = 0;
14287   else
14288     y = tree_y + tree_height;
14289
14290   gtk_window_move (GTK_WINDOW (search_dialog), x, y);
14291 }
14292
14293 static void
14294 gtk_tree_view_search_disable_popdown (GtkEntry *entry,
14295                                       GtkMenu  *menu,
14296                                       gpointer  data)
14297 {
14298   GtkTreeView *tree_view = (GtkTreeView *)data;
14299
14300   tree_view->priv->disable_popdown = 1;
14301   g_signal_connect (menu, "hide",
14302                     G_CALLBACK (gtk_tree_view_search_enable_popdown), data);
14303 }
14304
14305 /* Because we're visible but offscreen, we just set a flag in the preedit
14306  * callback.
14307  */
14308 static void
14309 gtk_tree_view_search_preedit_changed (GtkIMContext *im_context,
14310                                       GtkTreeView  *tree_view)
14311 {
14312   tree_view->priv->imcontext_changed = 1;
14313   if (tree_view->priv->typeselect_flush_timeout)
14314     {
14315       g_source_remove (tree_view->priv->typeselect_flush_timeout);
14316       tree_view->priv->typeselect_flush_timeout =
14317         gdk_threads_add_timeout (GTK_TREE_VIEW_SEARCH_DIALOG_TIMEOUT,
14318                        (GSourceFunc) gtk_tree_view_search_entry_flush_timeout,
14319                        tree_view);
14320     }
14321
14322 }
14323
14324 static void
14325 gtk_tree_view_search_activate (GtkEntry    *entry,
14326                                GtkTreeView *tree_view)
14327 {
14328   GtkTreePath *path;
14329   GtkRBNode *node;
14330   GtkRBTree *tree;
14331
14332   gtk_tree_view_search_dialog_hide (tree_view->priv->search_window,
14333                                     tree_view,
14334                                     gtk_get_current_event_device ());
14335
14336   /* If we have a row selected and it's the cursor row, we activate
14337    * the row XXX */
14338   if (gtk_tree_row_reference_valid (tree_view->priv->cursor))
14339     {
14340       path = gtk_tree_row_reference_get_path (tree_view->priv->cursor);
14341
14342       _gtk_tree_view_find_node (tree_view, path, &tree, &node);
14343
14344       if (node && GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_SELECTED))
14345         gtk_tree_view_row_activated (tree_view, path, tree_view->priv->focus_column);
14346
14347       gtk_tree_path_free (path);
14348     }
14349 }
14350
14351 static gboolean
14352 gtk_tree_view_real_search_enable_popdown (gpointer data)
14353 {
14354   GtkTreeView *tree_view = (GtkTreeView *)data;
14355
14356   tree_view->priv->disable_popdown = 0;
14357
14358   return FALSE;
14359 }
14360
14361 static void
14362 gtk_tree_view_search_enable_popdown (GtkWidget *widget,
14363                                      gpointer   data)
14364 {
14365   gdk_threads_add_timeout_full (G_PRIORITY_HIGH, 200, gtk_tree_view_real_search_enable_popdown, g_object_ref (data), g_object_unref);
14366 }
14367
14368 static gboolean
14369 gtk_tree_view_search_delete_event (GtkWidget *widget,
14370                                    GdkEventAny *event,
14371                                    GtkTreeView *tree_view)
14372 {
14373   g_return_val_if_fail (GTK_IS_WIDGET (widget), FALSE);
14374
14375   gtk_tree_view_search_dialog_hide (widget, tree_view, NULL);
14376
14377   return TRUE;
14378 }
14379
14380 static gboolean
14381 gtk_tree_view_search_button_press_event (GtkWidget *widget,
14382                                          GdkEventButton *event,
14383                                          GtkTreeView *tree_view)
14384 {
14385   GdkDevice *keyb_device;
14386
14387   g_return_val_if_fail (GTK_IS_WIDGET (widget), FALSE);
14388
14389   keyb_device = gdk_device_get_associated_device (event->device);
14390   gtk_tree_view_search_dialog_hide (widget, tree_view, keyb_device);
14391
14392   if (event->window == tree_view->priv->bin_window)
14393     gtk_tree_view_button_press (GTK_WIDGET (tree_view), event);
14394
14395   return TRUE;
14396 }
14397
14398 static gboolean
14399 gtk_tree_view_search_scroll_event (GtkWidget *widget,
14400                                    GdkEventScroll *event,
14401                                    GtkTreeView *tree_view)
14402 {
14403   gboolean retval = FALSE;
14404
14405   if (event->direction == GDK_SCROLL_UP)
14406     {
14407       gtk_tree_view_search_move (widget, tree_view, TRUE);
14408       retval = TRUE;
14409     }
14410   else if (event->direction == GDK_SCROLL_DOWN)
14411     {
14412       gtk_tree_view_search_move (widget, tree_view, FALSE);
14413       retval = TRUE;
14414     }
14415
14416   /* renew the flush timeout */
14417   if (retval && tree_view->priv->typeselect_flush_timeout
14418       && !tree_view->priv->search_custom_entry_set)
14419     {
14420       g_source_remove (tree_view->priv->typeselect_flush_timeout);
14421       tree_view->priv->typeselect_flush_timeout =
14422         gdk_threads_add_timeout (GTK_TREE_VIEW_SEARCH_DIALOG_TIMEOUT,
14423                        (GSourceFunc) gtk_tree_view_search_entry_flush_timeout,
14424                        tree_view);
14425     }
14426
14427   return retval;
14428 }
14429
14430 static gboolean
14431 gtk_tree_view_search_key_press_event (GtkWidget *widget,
14432                                       GdkEventKey *event,
14433                                       GtkTreeView *tree_view)
14434 {
14435   gboolean retval = FALSE;
14436
14437   g_return_val_if_fail (GTK_IS_WIDGET (widget), FALSE);
14438   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), FALSE);
14439
14440   /* close window and cancel the search */
14441   if (!tree_view->priv->search_custom_entry_set
14442       && (event->keyval == GDK_KEY_Escape ||
14443           event->keyval == GDK_KEY_Tab ||
14444             event->keyval == GDK_KEY_KP_Tab ||
14445             event->keyval == GDK_KEY_ISO_Left_Tab))
14446     {
14447       gtk_tree_view_search_dialog_hide (widget, tree_view,
14448                                         gdk_event_get_device ((GdkEvent *) event));
14449       return TRUE;
14450     }
14451
14452   /* select previous matching iter */
14453   if (event->keyval == GDK_KEY_Up || event->keyval == GDK_KEY_KP_Up)
14454     {
14455       if (!gtk_tree_view_search_move (widget, tree_view, TRUE))
14456         gtk_widget_error_bell (widget);
14457
14458       retval = TRUE;
14459     }
14460
14461   if (((event->state & (GTK_DEFAULT_ACCEL_MOD_MASK | GDK_SHIFT_MASK)) == (GTK_DEFAULT_ACCEL_MOD_MASK | GDK_SHIFT_MASK))
14462       && (event->keyval == GDK_KEY_g || event->keyval == GDK_KEY_G))
14463     {
14464       if (!gtk_tree_view_search_move (widget, tree_view, TRUE))
14465         gtk_widget_error_bell (widget);
14466
14467       retval = TRUE;
14468     }
14469
14470   /* select next matching iter */
14471   if (event->keyval == GDK_KEY_Down || event->keyval == GDK_KEY_KP_Down)
14472     {
14473       if (!gtk_tree_view_search_move (widget, tree_view, FALSE))
14474         gtk_widget_error_bell (widget);
14475
14476       retval = TRUE;
14477     }
14478
14479   if (((event->state & (GTK_DEFAULT_ACCEL_MOD_MASK | GDK_SHIFT_MASK)) == GTK_DEFAULT_ACCEL_MOD_MASK)
14480       && (event->keyval == GDK_KEY_g || event->keyval == GDK_KEY_G))
14481     {
14482       if (!gtk_tree_view_search_move (widget, tree_view, FALSE))
14483         gtk_widget_error_bell (widget);
14484
14485       retval = TRUE;
14486     }
14487
14488   /* renew the flush timeout */
14489   if (retval && tree_view->priv->typeselect_flush_timeout
14490       && !tree_view->priv->search_custom_entry_set)
14491     {
14492       g_source_remove (tree_view->priv->typeselect_flush_timeout);
14493       tree_view->priv->typeselect_flush_timeout =
14494         gdk_threads_add_timeout (GTK_TREE_VIEW_SEARCH_DIALOG_TIMEOUT,
14495                        (GSourceFunc) gtk_tree_view_search_entry_flush_timeout,
14496                        tree_view);
14497     }
14498
14499   return retval;
14500 }
14501
14502 /*  this function returns FALSE if there is a search string but
14503  *  nothing was found, and TRUE otherwise.
14504  */
14505 static gboolean
14506 gtk_tree_view_search_move (GtkWidget   *window,
14507                            GtkTreeView *tree_view,
14508                            gboolean     up)
14509 {
14510   gboolean ret;
14511   gint len;
14512   gint count = 0;
14513   const gchar *text;
14514   GtkTreeIter iter;
14515   GtkTreeModel *model;
14516   GtkTreeSelection *selection;
14517
14518   text = gtk_entry_get_text (GTK_ENTRY (tree_view->priv->search_entry));
14519
14520   g_return_val_if_fail (text != NULL, FALSE);
14521
14522   len = strlen (text);
14523
14524   if (up && tree_view->priv->selected_iter == 1)
14525     return strlen (text) < 1;
14526
14527   len = strlen (text);
14528
14529   if (len < 1)
14530     return TRUE;
14531
14532   model = gtk_tree_view_get_model (tree_view);
14533   selection = gtk_tree_view_get_selection (tree_view);
14534
14535   /* search */
14536   gtk_tree_selection_unselect_all (selection);
14537   if (!gtk_tree_model_get_iter_first (model, &iter))
14538     return TRUE;
14539
14540   ret = gtk_tree_view_search_iter (model, selection, &iter, text,
14541                                    &count, up?((tree_view->priv->selected_iter) - 1):((tree_view->priv->selected_iter + 1)));
14542
14543   if (ret)
14544     {
14545       /* found */
14546       tree_view->priv->selected_iter += up?(-1):(1);
14547       return TRUE;
14548     }
14549   else
14550     {
14551       /* return to old iter */
14552       count = 0;
14553       gtk_tree_model_get_iter_first (model, &iter);
14554       gtk_tree_view_search_iter (model, selection,
14555                                  &iter, text,
14556                                  &count, tree_view->priv->selected_iter);
14557       return FALSE;
14558     }
14559 }
14560
14561 static gboolean
14562 gtk_tree_view_search_equal_func (GtkTreeModel *model,
14563                                  gint          column,
14564                                  const gchar  *key,
14565                                  GtkTreeIter  *iter,
14566                                  gpointer      search_data)
14567 {
14568   gboolean retval = TRUE;
14569   const gchar *str;
14570   gchar *normalized_string;
14571   gchar *normalized_key;
14572   gchar *case_normalized_string = NULL;
14573   gchar *case_normalized_key = NULL;
14574   GValue value = {0,};
14575   GValue transformed = {0,};
14576
14577   gtk_tree_model_get_value (model, iter, column, &value);
14578
14579   g_value_init (&transformed, G_TYPE_STRING);
14580
14581   if (!g_value_transform (&value, &transformed))
14582     {
14583       g_value_unset (&value);
14584       return TRUE;
14585     }
14586
14587   g_value_unset (&value);
14588
14589   str = g_value_get_string (&transformed);
14590   if (!str)
14591     {
14592       g_value_unset (&transformed);
14593       return TRUE;
14594     }
14595
14596   normalized_string = g_utf8_normalize (str, -1, G_NORMALIZE_ALL);
14597   normalized_key = g_utf8_normalize (key, -1, G_NORMALIZE_ALL);
14598
14599   if (normalized_string && normalized_key)
14600     {
14601       case_normalized_string = g_utf8_casefold (normalized_string, -1);
14602       case_normalized_key = g_utf8_casefold (normalized_key, -1);
14603
14604       if (strncmp (case_normalized_key, case_normalized_string, strlen (case_normalized_key)) == 0)
14605         retval = FALSE;
14606     }
14607
14608   g_value_unset (&transformed);
14609   g_free (normalized_key);
14610   g_free (normalized_string);
14611   g_free (case_normalized_key);
14612   g_free (case_normalized_string);
14613
14614   return retval;
14615 }
14616
14617 static gboolean
14618 gtk_tree_view_search_iter (GtkTreeModel     *model,
14619                            GtkTreeSelection *selection,
14620                            GtkTreeIter      *iter,
14621                            const gchar      *text,
14622                            gint             *count,
14623                            gint              n)
14624 {
14625   GtkRBTree *tree = NULL;
14626   GtkRBNode *node = NULL;
14627   GtkTreePath *path;
14628
14629   GtkTreeView *tree_view = gtk_tree_selection_get_tree_view (selection);
14630
14631   path = gtk_tree_model_get_path (model, iter);
14632   _gtk_tree_view_find_node (tree_view, path, &tree, &node);
14633
14634   do
14635     {
14636       if (! tree_view->priv->search_equal_func (model, tree_view->priv->search_column, text, iter, tree_view->priv->search_user_data))
14637         {
14638           (*count)++;
14639           if (*count == n)
14640             {
14641               gtk_tree_view_scroll_to_cell (tree_view, path, NULL,
14642                                             TRUE, 0.5, 0.0);
14643               gtk_tree_selection_select_iter (selection, iter);
14644               gtk_tree_view_real_set_cursor (tree_view, path, FALSE, TRUE);
14645
14646               if (path)
14647                 gtk_tree_path_free (path);
14648
14649               return TRUE;
14650             }
14651         }
14652
14653       if (node->children)
14654         {
14655           gboolean has_child;
14656           GtkTreeIter tmp;
14657
14658           tree = node->children;
14659           node = tree->root;
14660
14661           while (node->left != tree->nil)
14662             node = node->left;
14663
14664           tmp = *iter;
14665           has_child = gtk_tree_model_iter_children (model, iter, &tmp);
14666           gtk_tree_path_down (path);
14667
14668           /* sanity check */
14669           TREE_VIEW_INTERNAL_ASSERT (has_child, FALSE);
14670         }
14671       else
14672         {
14673           gboolean done = FALSE;
14674
14675           do
14676             {
14677               node = _gtk_rbtree_next (tree, node);
14678
14679               if (node)
14680                 {
14681                   gboolean has_next;
14682
14683                   has_next = gtk_tree_model_iter_next (model, iter);
14684
14685                   done = TRUE;
14686                   gtk_tree_path_next (path);
14687
14688                   /* sanity check */
14689                   TREE_VIEW_INTERNAL_ASSERT (has_next, FALSE);
14690                 }
14691               else
14692                 {
14693                   gboolean has_parent;
14694                   GtkTreeIter tmp_iter = *iter;
14695
14696                   node = tree->parent_node;
14697                   tree = tree->parent_tree;
14698
14699                   if (!tree)
14700                     {
14701                       if (path)
14702                         gtk_tree_path_free (path);
14703
14704                       /* we've run out of tree, done with this func */
14705                       return FALSE;
14706                     }
14707
14708                   has_parent = gtk_tree_model_iter_parent (model,
14709                                                            iter,
14710                                                            &tmp_iter);
14711                   gtk_tree_path_up (path);
14712
14713                   /* sanity check */
14714                   TREE_VIEW_INTERNAL_ASSERT (has_parent, FALSE);
14715                 }
14716             }
14717           while (!done);
14718         }
14719     }
14720   while (1);
14721
14722   return FALSE;
14723 }
14724
14725 static void
14726 gtk_tree_view_search_init (GtkWidget   *entry,
14727                            GtkTreeView *tree_view)
14728 {
14729   gint ret;
14730   gint count = 0;
14731   const gchar *text;
14732   GtkTreeIter iter;
14733   GtkTreeModel *model;
14734   GtkTreeSelection *selection;
14735
14736   g_return_if_fail (GTK_IS_ENTRY (entry));
14737   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
14738
14739   text = gtk_entry_get_text (GTK_ENTRY (entry));
14740
14741   model = gtk_tree_view_get_model (tree_view);
14742   selection = gtk_tree_view_get_selection (tree_view);
14743
14744   /* search */
14745   gtk_tree_selection_unselect_all (selection);
14746   if (tree_view->priv->typeselect_flush_timeout
14747       && !tree_view->priv->search_custom_entry_set)
14748     {
14749       g_source_remove (tree_view->priv->typeselect_flush_timeout);
14750       tree_view->priv->typeselect_flush_timeout =
14751         gdk_threads_add_timeout (GTK_TREE_VIEW_SEARCH_DIALOG_TIMEOUT,
14752                        (GSourceFunc) gtk_tree_view_search_entry_flush_timeout,
14753                        tree_view);
14754     }
14755
14756   if (*text == '\0')
14757     return;
14758
14759   if (!gtk_tree_model_get_iter_first (model, &iter))
14760     return;
14761
14762   ret = gtk_tree_view_search_iter (model, selection,
14763                                    &iter, text,
14764                                    &count, 1);
14765
14766   if (ret)
14767     tree_view->priv->selected_iter = 1;
14768 }
14769
14770 static void
14771 gtk_tree_view_remove_widget (GtkCellEditable *cell_editable,
14772                              GtkTreeView     *tree_view)
14773 {
14774   if (tree_view->priv->edited_column == NULL)
14775     return;
14776
14777   _gtk_tree_view_column_stop_editing (tree_view->priv->edited_column);
14778   tree_view->priv->edited_column = NULL;
14779
14780   if (gtk_widget_has_focus (GTK_WIDGET (cell_editable)))
14781     gtk_widget_grab_focus (GTK_WIDGET (tree_view));
14782
14783   g_signal_handlers_disconnect_by_func (cell_editable,
14784                                         gtk_tree_view_remove_widget,
14785                                         tree_view);
14786
14787   gtk_container_remove (GTK_CONTAINER (tree_view),
14788                         GTK_WIDGET (cell_editable));
14789
14790   /* FIXME should only redraw a single node */
14791   gtk_widget_queue_draw (GTK_WIDGET (tree_view));
14792 }
14793
14794 static gboolean
14795 gtk_tree_view_start_editing (GtkTreeView *tree_view,
14796                              GtkTreePath *cursor_path)
14797 {
14798   GtkTreeIter iter;
14799   GdkRectangle background_area;
14800   GdkRectangle cell_area;
14801   GtkCellEditable *editable_widget = NULL;
14802   gchar *path_string;
14803   guint flags = 0; /* can be 0, as the flags are primarily for rendering */
14804   gint retval = FALSE;
14805   GtkRBTree *cursor_tree;
14806   GtkRBNode *cursor_node;
14807
14808   g_assert (tree_view->priv->focus_column);
14809
14810   if (!gtk_widget_get_realized (GTK_WIDGET (tree_view)))
14811     return FALSE;
14812
14813   if (_gtk_tree_view_find_node (tree_view, cursor_path, &cursor_tree, &cursor_node) ||
14814       cursor_node == NULL)
14815     return FALSE;
14816
14817   path_string = gtk_tree_path_to_string (cursor_path);
14818   gtk_tree_model_get_iter (tree_view->priv->model, &iter, cursor_path);
14819
14820   validate_row (tree_view, cursor_tree, cursor_node, &iter, cursor_path);
14821
14822   gtk_tree_view_column_cell_set_cell_data (tree_view->priv->focus_column,
14823                                            tree_view->priv->model,
14824                                            &iter,
14825                                            GTK_RBNODE_FLAG_SET (cursor_node, GTK_RBNODE_IS_PARENT),
14826                                            cursor_node->children?TRUE:FALSE);
14827   gtk_tree_view_get_background_area (tree_view,
14828                                      cursor_path,
14829                                      tree_view->priv->focus_column,
14830                                      &background_area);
14831   gtk_tree_view_get_cell_area (tree_view,
14832                                cursor_path,
14833                                tree_view->priv->focus_column,
14834                                &cell_area);
14835
14836   if (_gtk_tree_view_column_cell_event (tree_view->priv->focus_column,
14837                                         &editable_widget,
14838                                         NULL,
14839                                         path_string,
14840                                         &background_area,
14841                                         &cell_area,
14842                                         flags))
14843     {
14844       retval = TRUE;
14845       if (editable_widget != NULL)
14846         {
14847           gint left, right;
14848           GdkRectangle area;
14849           GtkCellRenderer *cell;
14850
14851           area = cell_area;
14852           cell = _gtk_tree_view_column_get_edited_cell (tree_view->priv->focus_column);
14853
14854           _gtk_tree_view_column_get_neighbor_sizes (tree_view->priv->focus_column, cell, &left, &right);
14855
14856           area.x += left;
14857           area.width -= right + left;
14858
14859           gtk_tree_view_real_start_editing (tree_view,
14860                                             tree_view->priv->focus_column,
14861                                             cursor_path,
14862                                             editable_widget,
14863                                             &area,
14864                                             NULL,
14865                                             flags);
14866         }
14867
14868     }
14869   g_free (path_string);
14870   return retval;
14871 }
14872
14873 static void
14874 gtk_tree_view_real_start_editing (GtkTreeView       *tree_view,
14875                                   GtkTreeViewColumn *column,
14876                                   GtkTreePath       *path,
14877                                   GtkCellEditable   *cell_editable,
14878                                   GdkRectangle      *cell_area,
14879                                   GdkEvent          *event,
14880                                   guint              flags)
14881 {
14882   gint pre_val = tree_view->priv->vadjustment->value;
14883   GtkRequisition requisition;
14884
14885   tree_view->priv->edited_column = column;
14886   _gtk_tree_view_column_start_editing (column, GTK_CELL_EDITABLE (cell_editable));
14887
14888   gtk_tree_view_real_set_cursor (tree_view, path, FALSE, TRUE);
14889   cell_area->y += pre_val - (int)tree_view->priv->vadjustment->value;
14890
14891   gtk_widget_size_request (GTK_WIDGET (cell_editable), &requisition);
14892
14893   GTK_TREE_VIEW_SET_FLAG (tree_view, GTK_TREE_VIEW_DRAW_KEYFOCUS);
14894
14895   if (requisition.height < cell_area->height)
14896     {
14897       gint diff = cell_area->height - requisition.height;
14898       gtk_tree_view_put (tree_view,
14899                          GTK_WIDGET (cell_editable),
14900                          cell_area->x, cell_area->y + diff/2,
14901                          cell_area->width, requisition.height);
14902     }
14903   else
14904     {
14905       gtk_tree_view_put (tree_view,
14906                          GTK_WIDGET (cell_editable),
14907                          cell_area->x, cell_area->y,
14908                          cell_area->width, cell_area->height);
14909     }
14910
14911   gtk_cell_editable_start_editing (GTK_CELL_EDITABLE (cell_editable),
14912                                    (GdkEvent *)event);
14913
14914   gtk_widget_grab_focus (GTK_WIDGET (cell_editable));
14915   g_signal_connect (cell_editable, "remove-widget",
14916                     G_CALLBACK (gtk_tree_view_remove_widget), tree_view);
14917 }
14918
14919 static void
14920 gtk_tree_view_stop_editing (GtkTreeView *tree_view,
14921                             gboolean     cancel_editing)
14922 {
14923   GtkTreeViewColumn *column;
14924   GtkCellRenderer *cell;
14925
14926   if (tree_view->priv->edited_column == NULL)
14927     return;
14928
14929   /*
14930    * This is very evil. We need to do this, because
14931    * gtk_cell_editable_editing_done may trigger gtk_tree_view_row_changed
14932    * later on. If gtk_tree_view_row_changed notices
14933    * tree_view->priv->edited_column != NULL, it'll call
14934    * gtk_tree_view_stop_editing again. Bad things will happen then.
14935    *
14936    * Please read that again if you intend to modify anything here.
14937    */
14938
14939   column = tree_view->priv->edited_column;
14940   tree_view->priv->edited_column = NULL;
14941
14942   cell = _gtk_tree_view_column_get_edited_cell (column);
14943   gtk_cell_renderer_stop_editing (cell, cancel_editing);
14944
14945   if (!cancel_editing)
14946     gtk_cell_editable_editing_done (column->editable_widget);
14947
14948   tree_view->priv->edited_column = column;
14949
14950   gtk_cell_editable_remove_widget (column->editable_widget);
14951 }
14952
14953
14954 /**
14955  * gtk_tree_view_set_hover_selection:
14956  * @tree_view: a #GtkTreeView
14957  * @hover: %TRUE to enable hover selection mode
14958  *
14959  * Enables of disables the hover selection mode of @tree_view.
14960  * Hover selection makes the selected row follow the pointer.
14961  * Currently, this works only for the selection modes
14962  * %GTK_SELECTION_SINGLE and %GTK_SELECTION_BROWSE.
14963  *
14964  * Since: 2.6
14965  **/
14966 void
14967 gtk_tree_view_set_hover_selection (GtkTreeView *tree_view,
14968                                    gboolean     hover)
14969 {
14970   hover = hover != FALSE;
14971
14972   if (hover != tree_view->priv->hover_selection)
14973     {
14974       tree_view->priv->hover_selection = hover;
14975
14976       g_object_notify (G_OBJECT (tree_view), "hover-selection");
14977     }
14978 }
14979
14980 /**
14981  * gtk_tree_view_get_hover_selection:
14982  * @tree_view: a #GtkTreeView
14983  *
14984  * Returns whether hover selection mode is turned on for @tree_view.
14985  *
14986  * Return value: %TRUE if @tree_view is in hover selection mode
14987  *
14988  * Since: 2.6
14989  **/
14990 gboolean
14991 gtk_tree_view_get_hover_selection (GtkTreeView *tree_view)
14992 {
14993   return tree_view->priv->hover_selection;
14994 }
14995
14996 /**
14997  * gtk_tree_view_set_hover_expand:
14998  * @tree_view: a #GtkTreeView
14999  * @expand: %TRUE to enable hover selection mode
15000  *
15001  * Enables of disables the hover expansion mode of @tree_view.
15002  * Hover expansion makes rows expand or collapse if the pointer
15003  * moves over them.
15004  *
15005  * Since: 2.6
15006  **/
15007 void
15008 gtk_tree_view_set_hover_expand (GtkTreeView *tree_view,
15009                                 gboolean     expand)
15010 {
15011   expand = expand != FALSE;
15012
15013   if (expand != tree_view->priv->hover_expand)
15014     {
15015       tree_view->priv->hover_expand = expand;
15016
15017       g_object_notify (G_OBJECT (tree_view), "hover-expand");
15018     }
15019 }
15020
15021 /**
15022  * gtk_tree_view_get_hover_expand:
15023  * @tree_view: a #GtkTreeView
15024  *
15025  * Returns whether hover expansion mode is turned on for @tree_view.
15026  *
15027  * Return value: %TRUE if @tree_view is in hover expansion mode
15028  *
15029  * Since: 2.6
15030  **/
15031 gboolean
15032 gtk_tree_view_get_hover_expand (GtkTreeView *tree_view)
15033 {
15034   return tree_view->priv->hover_expand;
15035 }
15036
15037 /**
15038  * gtk_tree_view_set_rubber_banding:
15039  * @tree_view: a #GtkTreeView
15040  * @enable: %TRUE to enable rubber banding
15041  *
15042  * Enables or disables rubber banding in @tree_view.  If the selection mode
15043  * is #GTK_SELECTION_MULTIPLE, rubber banding will allow the user to select
15044  * multiple rows by dragging the mouse.
15045  *
15046  * Since: 2.10
15047  **/
15048 void
15049 gtk_tree_view_set_rubber_banding (GtkTreeView *tree_view,
15050                                   gboolean     enable)
15051 {
15052   enable = enable != FALSE;
15053
15054   if (enable != tree_view->priv->rubber_banding_enable)
15055     {
15056       tree_view->priv->rubber_banding_enable = enable;
15057
15058       g_object_notify (G_OBJECT (tree_view), "rubber-banding");
15059     }
15060 }
15061
15062 /**
15063  * gtk_tree_view_get_rubber_banding:
15064  * @tree_view: a #GtkTreeView
15065  *
15066  * Returns whether rubber banding is turned on for @tree_view.  If the
15067  * selection mode is #GTK_SELECTION_MULTIPLE, rubber banding will allow the
15068  * user to select multiple rows by dragging the mouse.
15069  *
15070  * Return value: %TRUE if rubber banding in @tree_view is enabled.
15071  *
15072  * Since: 2.10
15073  **/
15074 gboolean
15075 gtk_tree_view_get_rubber_banding (GtkTreeView *tree_view)
15076 {
15077   return tree_view->priv->rubber_banding_enable;
15078 }
15079
15080 /**
15081  * gtk_tree_view_is_rubber_banding_active:
15082  * @tree_view: a #GtkTreeView
15083  *
15084  * Returns whether a rubber banding operation is currently being done
15085  * in @tree_view.
15086  *
15087  * Return value: %TRUE if a rubber banding operation is currently being
15088  * done in @tree_view.
15089  *
15090  * Since: 2.12
15091  **/
15092 gboolean
15093 gtk_tree_view_is_rubber_banding_active (GtkTreeView *tree_view)
15094 {
15095   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), FALSE);
15096
15097   if (tree_view->priv->rubber_banding_enable
15098       && tree_view->priv->rubber_band_status == RUBBER_BAND_ACTIVE)
15099     return TRUE;
15100
15101   return FALSE;
15102 }
15103
15104 /**
15105  * gtk_tree_view_get_row_separator_func:
15106  * @tree_view: a #GtkTreeView
15107  *
15108  * Returns the current row separator function.
15109  *
15110  * Return value: the current row separator function.
15111  *
15112  * Since: 2.6
15113  **/
15114 GtkTreeViewRowSeparatorFunc
15115 gtk_tree_view_get_row_separator_func (GtkTreeView *tree_view)
15116 {
15117   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), NULL);
15118
15119   return tree_view->priv->row_separator_func;
15120 }
15121
15122 /**
15123  * gtk_tree_view_set_row_separator_func:
15124  * @tree_view: a #GtkTreeView
15125  * @func: a #GtkTreeViewRowSeparatorFunc
15126  * @data: (allow-none): user data to pass to @func, or %NULL
15127  * @destroy: (allow-none): destroy notifier for @data, or %NULL
15128  *
15129  * Sets the row separator function, which is used to determine
15130  * whether a row should be drawn as a separator. If the row separator
15131  * function is %NULL, no separators are drawn. This is the default value.
15132  *
15133  * Since: 2.6
15134  **/
15135 void
15136 gtk_tree_view_set_row_separator_func (GtkTreeView                 *tree_view,
15137                                       GtkTreeViewRowSeparatorFunc  func,
15138                                       gpointer                     data,
15139                                       GDestroyNotify               destroy)
15140 {
15141   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
15142
15143   if (tree_view->priv->row_separator_destroy)
15144     tree_view->priv->row_separator_destroy (tree_view->priv->row_separator_data);
15145
15146   tree_view->priv->row_separator_func = func;
15147   tree_view->priv->row_separator_data = data;
15148   tree_view->priv->row_separator_destroy = destroy;
15149
15150   /* Have the tree recalculate heights */
15151   _gtk_rbtree_mark_invalid (tree_view->priv->tree);
15152   gtk_widget_queue_resize (GTK_WIDGET (tree_view));
15153 }
15154
15155
15156 static void
15157 gtk_tree_view_grab_notify (GtkWidget *widget,
15158                            gboolean   was_grabbed)
15159 {
15160   GtkTreeView *tree_view = GTK_TREE_VIEW (widget);
15161
15162   tree_view->priv->in_grab = !was_grabbed;
15163
15164   if (!was_grabbed)
15165     {
15166       tree_view->priv->pressed_button = -1;
15167
15168       if (tree_view->priv->rubber_band_status)
15169         gtk_tree_view_stop_rubber_band (tree_view);
15170     }
15171 }
15172
15173 static void
15174 gtk_tree_view_state_changed (GtkWidget      *widget,
15175                              GtkStateType    previous_state)
15176 {
15177   GtkTreeView *tree_view = GTK_TREE_VIEW (widget);
15178
15179   if (gtk_widget_get_realized (widget))
15180     {
15181       gdk_window_set_back_pixmap (gtk_widget_get_window (widget), NULL, FALSE);
15182       gdk_window_set_background (tree_view->priv->bin_window,
15183                                  &gtk_widget_get_style (widget)->base[gtk_widget_get_state (widget)]);
15184     }
15185
15186   gtk_widget_queue_draw (widget);
15187 }
15188
15189 /**
15190  * gtk_tree_view_get_grid_lines:
15191  * @tree_view: a #GtkTreeView
15192  *
15193  * Returns which grid lines are enabled in @tree_view.
15194  *
15195  * Return value: a #GtkTreeViewGridLines value indicating which grid lines
15196  * are enabled.
15197  *
15198  * Since: 2.10
15199  */
15200 GtkTreeViewGridLines
15201 gtk_tree_view_get_grid_lines (GtkTreeView *tree_view)
15202 {
15203   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), 0);
15204
15205   return tree_view->priv->grid_lines;
15206 }
15207
15208 /**
15209  * gtk_tree_view_set_grid_lines:
15210  * @tree_view: a #GtkTreeView
15211  * @grid_lines: a #GtkTreeViewGridLines value indicating which grid lines to
15212  * enable.
15213  *
15214  * Sets which grid lines to draw in @tree_view.
15215  *
15216  * Since: 2.10
15217  */
15218 void
15219 gtk_tree_view_set_grid_lines (GtkTreeView           *tree_view,
15220                               GtkTreeViewGridLines   grid_lines)
15221 {
15222   GtkTreeViewPrivate *priv;
15223   GtkWidget *widget;
15224   GtkTreeViewGridLines old_grid_lines;
15225
15226   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
15227
15228   priv = tree_view->priv;
15229   widget = GTK_WIDGET (tree_view);
15230
15231   old_grid_lines = priv->grid_lines;
15232   priv->grid_lines = grid_lines;
15233
15234   if (gtk_widget_get_realized (widget))
15235     {
15236       if (grid_lines == GTK_TREE_VIEW_GRID_LINES_NONE &&
15237           priv->grid_line_width)
15238         {
15239           priv->grid_line_width = 0;
15240         }
15241
15242       if (grid_lines != GTK_TREE_VIEW_GRID_LINES_NONE &&
15243           !priv->grid_line_width)
15244         {
15245           gint8 *dash_list;
15246
15247           gtk_widget_style_get (widget,
15248                                 "grid-line-width", &priv->grid_line_width,
15249                                 "grid-line-pattern", (gchar *)&dash_list,
15250                                 NULL);
15251
15252           if (dash_list)
15253             {
15254               priv->grid_line_dashes[0] = dash_list[0];
15255               if (dash_list[0])
15256                 priv->grid_line_dashes[1] = dash_list[1];
15257
15258               g_free (dash_list);
15259             }
15260           else
15261             {
15262               priv->grid_line_dashes[0] = 1;
15263               priv->grid_line_dashes[1] = 1;
15264             }
15265         }
15266     }
15267
15268   if (old_grid_lines != grid_lines)
15269     {
15270       gtk_widget_queue_draw (GTK_WIDGET (tree_view));
15271
15272       g_object_notify (G_OBJECT (tree_view), "enable-grid-lines");
15273     }
15274 }
15275
15276 /**
15277  * gtk_tree_view_get_enable_tree_lines:
15278  * @tree_view: a #GtkTreeView.
15279  *
15280  * Returns whether or not tree lines are drawn in @tree_view.
15281  *
15282  * Return value: %TRUE if tree lines are drawn in @tree_view, %FALSE
15283  * otherwise.
15284  *
15285  * Since: 2.10
15286  */
15287 gboolean
15288 gtk_tree_view_get_enable_tree_lines (GtkTreeView *tree_view)
15289 {
15290   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), FALSE);
15291
15292   return tree_view->priv->tree_lines_enabled;
15293 }
15294
15295 /**
15296  * gtk_tree_view_set_enable_tree_lines:
15297  * @tree_view: a #GtkTreeView
15298  * @enabled: %TRUE to enable tree line drawing, %FALSE otherwise.
15299  *
15300  * Sets whether to draw lines interconnecting the expanders in @tree_view.
15301  * This does not have any visible effects for lists.
15302  *
15303  * Since: 2.10
15304  */
15305 void
15306 gtk_tree_view_set_enable_tree_lines (GtkTreeView *tree_view,
15307                                      gboolean     enabled)
15308 {
15309   GtkTreeViewPrivate *priv;
15310   GtkWidget *widget;
15311   gboolean was_enabled;
15312
15313   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
15314
15315   enabled = enabled != FALSE;
15316
15317   priv = tree_view->priv;
15318   widget = GTK_WIDGET (tree_view);
15319
15320   was_enabled = priv->tree_lines_enabled;
15321
15322   priv->tree_lines_enabled = enabled;
15323
15324   if (gtk_widget_get_realized (widget))
15325     {
15326       if (!enabled && priv->tree_line_width)
15327         {
15328           priv->tree_line_width = 0;
15329         }
15330
15331       if (enabled && !priv->tree_line_width)
15332         {
15333           gint8 *dash_list;
15334           gtk_widget_style_get (widget,
15335                                 "tree-line-width", &priv->tree_line_width,
15336                                 "tree-line-pattern", (gchar *)&dash_list,
15337                                 NULL);
15338
15339           if (dash_list)
15340             {
15341               priv->tree_line_dashes[0] = dash_list[0];
15342               if (dash_list[0])
15343                 priv->tree_line_dashes[1] = dash_list[1];
15344
15345               g_free (dash_list);
15346             }
15347           else
15348             {
15349               priv->tree_line_dashes[0] = 1;
15350               priv->tree_line_dashes[1] = 1;
15351             }
15352         }
15353     }
15354
15355   if (was_enabled != enabled)
15356     {
15357       gtk_widget_queue_draw (GTK_WIDGET (tree_view));
15358
15359       g_object_notify (G_OBJECT (tree_view), "enable-tree-lines");
15360     }
15361 }
15362
15363
15364 /**
15365  * gtk_tree_view_set_show_expanders:
15366  * @tree_view: a #GtkTreeView
15367  * @enabled: %TRUE to enable expander drawing, %FALSE otherwise.
15368  *
15369  * Sets whether to draw and enable expanders and indent child rows in
15370  * @tree_view.  When disabled there will be no expanders visible in trees
15371  * and there will be no way to expand and collapse rows by default.  Also
15372  * note that hiding the expanders will disable the default indentation.  You
15373  * can set a custom indentation in this case using
15374  * gtk_tree_view_set_level_indentation().
15375  * This does not have any visible effects for lists.
15376  *
15377  * Since: 2.12
15378  */
15379 void
15380 gtk_tree_view_set_show_expanders (GtkTreeView *tree_view,
15381                                   gboolean     enabled)
15382 {
15383   gboolean was_enabled;
15384
15385   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
15386
15387   enabled = enabled != FALSE;
15388   was_enabled = GTK_TREE_VIEW_FLAG_SET (tree_view, GTK_TREE_VIEW_SHOW_EXPANDERS);
15389
15390   if (enabled)
15391     GTK_TREE_VIEW_SET_FLAG (tree_view, GTK_TREE_VIEW_SHOW_EXPANDERS);
15392   else
15393     GTK_TREE_VIEW_UNSET_FLAG (tree_view, GTK_TREE_VIEW_SHOW_EXPANDERS);
15394
15395   if (enabled != was_enabled)
15396     gtk_widget_queue_draw (GTK_WIDGET (tree_view));
15397 }
15398
15399 /**
15400  * gtk_tree_view_get_show_expanders:
15401  * @tree_view: a #GtkTreeView.
15402  *
15403  * Returns whether or not expanders are drawn in @tree_view.
15404  *
15405  * Return value: %TRUE if expanders are drawn in @tree_view, %FALSE
15406  * otherwise.
15407  *
15408  * Since: 2.12
15409  */
15410 gboolean
15411 gtk_tree_view_get_show_expanders (GtkTreeView *tree_view)
15412 {
15413   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), FALSE);
15414
15415   return GTK_TREE_VIEW_FLAG_SET (tree_view, GTK_TREE_VIEW_SHOW_EXPANDERS);
15416 }
15417
15418 /**
15419  * gtk_tree_view_set_level_indentation:
15420  * @tree_view: a #GtkTreeView
15421  * @indentation: the amount, in pixels, of extra indentation in @tree_view.
15422  *
15423  * Sets the amount of extra indentation for child levels to use in @tree_view
15424  * in addition to the default indentation.  The value should be specified in
15425  * pixels, a value of 0 disables this feature and in this case only the default
15426  * indentation will be used.
15427  * This does not have any visible effects for lists.
15428  *
15429  * Since: 2.12
15430  */
15431 void
15432 gtk_tree_view_set_level_indentation (GtkTreeView *tree_view,
15433                                      gint         indentation)
15434 {
15435   tree_view->priv->level_indentation = indentation;
15436
15437   gtk_widget_queue_draw (GTK_WIDGET (tree_view));
15438 }
15439
15440 /**
15441  * gtk_tree_view_get_level_indentation:
15442  * @tree_view: a #GtkTreeView.
15443  *
15444  * Returns the amount, in pixels, of extra indentation for child levels
15445  * in @tree_view.
15446  *
15447  * Return value: the amount of extra indentation for child levels in
15448  * @tree_view.  A return value of 0 means that this feature is disabled.
15449  *
15450  * Since: 2.12
15451  */
15452 gint
15453 gtk_tree_view_get_level_indentation (GtkTreeView *tree_view)
15454 {
15455   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), 0);
15456
15457   return tree_view->priv->level_indentation;
15458 }
15459
15460 /**
15461  * gtk_tree_view_set_tooltip_row:
15462  * @tree_view: a #GtkTreeView
15463  * @tooltip: a #GtkTooltip
15464  * @path: a #GtkTreePath
15465  *
15466  * Sets the tip area of @tooltip to be the area covered by the row at @path.
15467  * See also gtk_tree_view_set_tooltip_column() for a simpler alternative.
15468  * See also gtk_tooltip_set_tip_area().
15469  *
15470  * Since: 2.12
15471  */
15472 void
15473 gtk_tree_view_set_tooltip_row (GtkTreeView *tree_view,
15474                                GtkTooltip  *tooltip,
15475                                GtkTreePath *path)
15476 {
15477   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
15478   g_return_if_fail (GTK_IS_TOOLTIP (tooltip));
15479
15480   gtk_tree_view_set_tooltip_cell (tree_view, tooltip, path, NULL, NULL);
15481 }
15482
15483 /**
15484  * gtk_tree_view_set_tooltip_cell:
15485  * @tree_view: a #GtkTreeView
15486  * @tooltip: a #GtkTooltip
15487  * @path: (allow-none): a #GtkTreePath or %NULL
15488  * @column: (allow-none): a #GtkTreeViewColumn or %NULL
15489  * @cell: (allow-none): a #GtkCellRenderer or %NULL
15490  *
15491  * Sets the tip area of @tooltip to the area @path, @column and @cell have
15492  * in common.  For example if @path is %NULL and @column is set, the tip
15493  * area will be set to the full area covered by @column.  See also
15494  * gtk_tooltip_set_tip_area().
15495  *
15496  * Note that if @path is not specified and @cell is set and part of a column
15497  * containing the expander, the tooltip might not show and hide at the correct
15498  * position.  In such cases @path must be set to the current node under the
15499  * mouse cursor for this function to operate correctly.
15500  *
15501  * See also gtk_tree_view_set_tooltip_column() for a simpler alternative.
15502  *
15503  * Since: 2.12
15504  */
15505 void
15506 gtk_tree_view_set_tooltip_cell (GtkTreeView       *tree_view,
15507                                 GtkTooltip        *tooltip,
15508                                 GtkTreePath       *path,
15509                                 GtkTreeViewColumn *column,
15510                                 GtkCellRenderer   *cell)
15511 {
15512   GtkAllocation allocation;
15513   GdkRectangle rect;
15514
15515   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
15516   g_return_if_fail (GTK_IS_TOOLTIP (tooltip));
15517   g_return_if_fail (column == NULL || GTK_IS_TREE_VIEW_COLUMN (column));
15518   g_return_if_fail (cell == NULL || GTK_IS_CELL_RENDERER (cell));
15519
15520   /* Determine x values. */
15521   if (column && cell)
15522     {
15523       GdkRectangle tmp;
15524       gint start, width;
15525
15526       /* We always pass in path here, whether it is NULL or not.
15527        * For cells in expander columns path must be specified so that
15528        * we can correctly account for the indentation.  This also means
15529        * that the tooltip is constrained vertically by the "Determine y
15530        * values" code below; this is not a real problem since cells actually
15531        * don't stretch vertically in constrast to columns.
15532        */
15533       gtk_tree_view_get_cell_area (tree_view, path, column, &tmp);
15534       gtk_tree_view_column_cell_get_position (column, cell, &start, &width);
15535
15536       gtk_tree_view_convert_bin_window_to_widget_coords (tree_view,
15537                                                          tmp.x + start, 0,
15538                                                          &rect.x, NULL);
15539       rect.width = width;
15540     }
15541   else if (column)
15542     {
15543       GdkRectangle tmp;
15544
15545       gtk_tree_view_get_background_area (tree_view, NULL, column, &tmp);
15546       gtk_tree_view_convert_bin_window_to_widget_coords (tree_view,
15547                                                          tmp.x, 0,
15548                                                          &rect.x, NULL);
15549       rect.width = tmp.width;
15550     }
15551   else
15552     {
15553       gtk_widget_get_allocation (GTK_WIDGET (tree_view), &allocation);
15554       rect.x = 0;
15555       rect.width = allocation.width;
15556     }
15557
15558   /* Determine y values. */
15559   if (path)
15560     {
15561       GdkRectangle tmp;
15562
15563       gtk_tree_view_get_background_area (tree_view, path, NULL, &tmp);
15564       gtk_tree_view_convert_bin_window_to_widget_coords (tree_view,
15565                                                          0, tmp.y,
15566                                                          NULL, &rect.y);
15567       rect.height = tmp.height;
15568     }
15569   else
15570     {
15571       rect.y = 0;
15572       rect.height = tree_view->priv->vadjustment->page_size;
15573     }
15574
15575   gtk_tooltip_set_tip_area (tooltip, &rect);
15576 }
15577
15578 /**
15579  * gtk_tree_view_get_tooltip_context:
15580  * @tree_view: a #GtkTreeView
15581  * @x: the x coordinate (relative to widget coordinates)
15582  * @y: the y coordinate (relative to widget coordinates)
15583  * @keyboard_tip: whether this is a keyboard tooltip or not
15584  * @model: (out) (allow-none): a pointer to receive a #GtkTreeModel or %NULL
15585  * @path: (out) (allow-none): a pointer to receive a #GtkTreePath or %NULL
15586  * @iter: (out) (allow-none): a pointer to receive a #GtkTreeIter or %NULL
15587  *
15588  * This function is supposed to be used in a #GtkWidget::query-tooltip
15589  * signal handler for #GtkTreeView.  The @x, @y and @keyboard_tip values
15590  * which are received in the signal handler, should be passed to this
15591  * function without modification.
15592  *
15593  * The return value indicates whether there is a tree view row at the given
15594  * coordinates (%TRUE) or not (%FALSE) for mouse tooltips.  For keyboard
15595  * tooltips the row returned will be the cursor row.  When %TRUE, then any of
15596  * @model, @path and @iter which have been provided will be set to point to
15597  * that row and the corresponding model.  @x and @y will always be converted
15598  * to be relative to @tree_view's bin_window if @keyboard_tooltip is %FALSE.
15599  *
15600  * Return value: whether or not the given tooltip context points to a row.
15601  *
15602  * Since: 2.12
15603  */
15604 gboolean
15605 gtk_tree_view_get_tooltip_context (GtkTreeView   *tree_view,
15606                                    gint          *x,
15607                                    gint          *y,
15608                                    gboolean       keyboard_tip,
15609                                    GtkTreeModel **model,
15610                                    GtkTreePath  **path,
15611                                    GtkTreeIter   *iter)
15612 {
15613   GtkTreePath *tmppath = NULL;
15614
15615   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), FALSE);
15616   g_return_val_if_fail (x != NULL, FALSE);
15617   g_return_val_if_fail (y != NULL, FALSE);
15618
15619   if (keyboard_tip)
15620     {
15621       gtk_tree_view_get_cursor (tree_view, &tmppath, NULL);
15622
15623       if (!tmppath)
15624         return FALSE;
15625     }
15626   else
15627     {
15628       gtk_tree_view_convert_widget_to_bin_window_coords (tree_view, *x, *y,
15629                                                          x, y);
15630
15631       if (!gtk_tree_view_get_path_at_pos (tree_view, *x, *y,
15632                                           &tmppath, NULL, NULL, NULL))
15633         return FALSE;
15634     }
15635
15636   if (model)
15637     *model = gtk_tree_view_get_model (tree_view);
15638
15639   if (iter)
15640     gtk_tree_model_get_iter (gtk_tree_view_get_model (tree_view),
15641                              iter, tmppath);
15642
15643   if (path)
15644     *path = tmppath;
15645   else
15646     gtk_tree_path_free (tmppath);
15647
15648   return TRUE;
15649 }
15650
15651 static gboolean
15652 gtk_tree_view_set_tooltip_query_cb (GtkWidget  *widget,
15653                                     gint        x,
15654                                     gint        y,
15655                                     gboolean    keyboard_tip,
15656                                     GtkTooltip *tooltip,
15657                                     gpointer    data)
15658 {
15659   GValue value = { 0, };
15660   GValue transformed = { 0, };
15661   GtkTreeIter iter;
15662   GtkTreePath *path;
15663   GtkTreeModel *model;
15664   GtkTreeView *tree_view = GTK_TREE_VIEW (widget);
15665
15666   if (!gtk_tree_view_get_tooltip_context (GTK_TREE_VIEW (widget),
15667                                           &x, &y,
15668                                           keyboard_tip,
15669                                           &model, &path, &iter))
15670     return FALSE;
15671
15672   gtk_tree_model_get_value (model, &iter,
15673                             tree_view->priv->tooltip_column, &value);
15674
15675   g_value_init (&transformed, G_TYPE_STRING);
15676
15677   if (!g_value_transform (&value, &transformed))
15678     {
15679       g_value_unset (&value);
15680       gtk_tree_path_free (path);
15681
15682       return FALSE;
15683     }
15684
15685   g_value_unset (&value);
15686
15687   if (!g_value_get_string (&transformed))
15688     {
15689       g_value_unset (&transformed);
15690       gtk_tree_path_free (path);
15691
15692       return FALSE;
15693     }
15694
15695   gtk_tooltip_set_markup (tooltip, g_value_get_string (&transformed));
15696   gtk_tree_view_set_tooltip_row (tree_view, tooltip, path);
15697
15698   gtk_tree_path_free (path);
15699   g_value_unset (&transformed);
15700
15701   return TRUE;
15702 }
15703
15704 /**
15705  * gtk_tree_view_set_tooltip_column:
15706  * @tree_view: a #GtkTreeView
15707  * @column: an integer, which is a valid column number for @tree_view's model
15708  *
15709  * If you only plan to have simple (text-only) tooltips on full rows, you
15710  * can use this function to have #GtkTreeView handle these automatically
15711  * for you. @column should be set to the column in @tree_view's model
15712  * containing the tooltip texts, or -1 to disable this feature.
15713  *
15714  * When enabled, #GtkWidget::has-tooltip will be set to %TRUE and
15715  * @tree_view will connect a #GtkWidget::query-tooltip signal handler.
15716  *
15717  * Note that the signal handler sets the text with gtk_tooltip_set_markup(),
15718  * so &amp;, &lt;, etc have to be escaped in the text.
15719  *
15720  * Since: 2.12
15721  */
15722 void
15723 gtk_tree_view_set_tooltip_column (GtkTreeView *tree_view,
15724                                   gint         column)
15725 {
15726   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
15727
15728   if (column == tree_view->priv->tooltip_column)
15729     return;
15730
15731   if (column == -1)
15732     {
15733       g_signal_handlers_disconnect_by_func (tree_view,
15734                                             gtk_tree_view_set_tooltip_query_cb,
15735                                             NULL);
15736       gtk_widget_set_has_tooltip (GTK_WIDGET (tree_view), FALSE);
15737     }
15738   else
15739     {
15740       if (tree_view->priv->tooltip_column == -1)
15741         {
15742           g_signal_connect (tree_view, "query-tooltip",
15743                             G_CALLBACK (gtk_tree_view_set_tooltip_query_cb), NULL);
15744           gtk_widget_set_has_tooltip (GTK_WIDGET (tree_view), TRUE);
15745         }
15746     }
15747
15748   tree_view->priv->tooltip_column = column;
15749   g_object_notify (G_OBJECT (tree_view), "tooltip-column");
15750 }
15751
15752 /**
15753  * gtk_tree_view_get_tooltip_column:
15754  * @tree_view: a #GtkTreeView
15755  *
15756  * Returns the column of @tree_view's model which is being used for
15757  * displaying tooltips on @tree_view's rows.
15758  *
15759  * Return value: the index of the tooltip column that is currently being
15760  * used, or -1 if this is disabled.
15761  *
15762  * Since: 2.12
15763  */
15764 gint
15765 gtk_tree_view_get_tooltip_column (GtkTreeView *tree_view)
15766 {
15767   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), 0);
15768
15769   return tree_view->priv->tooltip_column;
15770 }