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

   1 /* gtktreeview.c
   2  * Copyright (C) 2000  Red Hat, Inc.,  Jonathan Blandford <jrb@redhat.com>
   3  *
   4  * This library is free software; you can redistribute it and/or
   5  * modify it under the terms of the GNU Library General Public
   6  * License as published by the Free Software Foundation; either
   7  * version 2 of the License, or (at your option) any later version.
   8  *
   9  * This library is distributed in the hope that it will be useful,
  10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  12  * Library General Public License for more details.
  13  *
  14  * You should have received a copy of the GNU Library General Public
  15  * License along with this library; if not, write to the
  16  * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
  17  * Boston, MA 02111-1307, USA.
  18  */
  19
  20
  21 #include "config.h"
  22 #include <string.h>
  23 #include <gdk/gdkkeysyms.h>
  24
  25 #include "gtktreeview.h"
  26 #include "gtkrbtree.h"
  27 #include "gtktreednd.h"
  28 #include "gtktreeprivate.h"
  29 #include "gtkcellrenderer.h"
  30 #include "gtkmain.h"
  31 #include "gtkmarshalers.h"
  32 #include "gtkbuildable.h"
  33 #include "gtkbutton.h"
  34 #include "gtkalignment.h"
  35 #include "gtklabel.h"
  36 #include "gtkhbox.h"
  37 #include "gtkvbox.h"
  38 #include "gtkarrow.h"
  39 #include "gtkintl.h"
  40 #include "gtkbindings.h"
  41 #include "gtkcontainer.h"
  42 #include "gtkentry.h"
  43 #include "gtkframe.h"
  44 #include "gtktreemodelsort.h"
  45 #include "gtktooltip.h"
  46 #include "gtkprivate.h"
  47
  48 #define GTK_TREE_VIEW_PRIORITY_VALIDATE (GDK_PRIORITY_REDRAW + 5)
  49 #define GTK_TREE_VIEW_PRIORITY_SCROLL_SYNC (GTK_TREE_VIEW_PRIORITY_VALIDATE + 2)
  50 #define GTK_TREE_VIEW_TIME_MS_PER_IDLE 30
  51 #define SCROLL_EDGE_SIZE 15
  52 #define EXPANDER_EXTRA_PADDING 4
  53 #define GTK_TREE_VIEW_SEARCH_DIALOG_TIMEOUT 5000
  54 #define AUTO_EXPAND_TIMEOUT 500
  55
  56 /* The "background" areas of all rows/cells add up to cover the entire tree.
  57  * The background includes all inter-row and inter-cell spacing.
  58  * The "cell" areas are the cell_area passed in to gtk_cell_renderer_render(),
  59  * i.e. just the cells, no spacing.
  60  */
  61
  62 #define BACKGROUND_HEIGHT(node) (GTK_RBNODE_GET_HEIGHT (node))
  63 #define CELL_HEIGHT(node, separator) ((BACKGROUND_HEIGHT (node)) - (separator))
  64
  65 /* Translate from bin_window coordinates to rbtree (tree coordinates) and
  66  * vice versa.
  67  */
  68 #define TREE_WINDOW_Y_TO_RBTREE_Y(tree_view,y) ((y) + tree_view->priv->dy)
  69 #define RBTREE_Y_TO_TREE_WINDOW_Y(tree_view,y) ((y) - tree_view->priv->dy)
  70
  71 /* This is in bin_window coordinates */
  72 #define BACKGROUND_FIRST_PIXEL(tree_view,tree,node) (RBTREE_Y_TO_TREE_WINDOW_Y (tree_view, _gtk_rbtree_node_find_offset ((tree), (node))))
  73 #define CELL_FIRST_PIXEL(tree_view,tree,node,separator) (BACKGROUND_FIRST_PIXEL (tree_view,tree,node) + separator/2)
  74
  75 #define ROW_HEIGHT(tree_view,height) \
  76   ((height > 0) ? (height) : (tree_view)->priv->expander_size)
  77
  78
  79 typedef struct _GtkTreeViewChild GtkTreeViewChild;
  80 struct _GtkTreeViewChild
  81 {
  82   GtkWidget *widget;
  83   gint x;
  84   gint y;
  85   gint width;
  86   gint height;
  87 };
  88
  89
  90 typedef struct _TreeViewDragInfo TreeViewDragInfo;
  91 struct _TreeViewDragInfo
  92 {
  93   GdkModifierType start_button_mask;
  94   GtkTargetList *_unused_source_target_list;
  95   GdkDragAction source_actions;
  96
  97   GtkTargetList *_unused_dest_target_list;
  98
  99   guint source_set : 1;
 100   guint dest_set : 1;
 101 };
 102
 103
 104 /* Signals */
 105 enum
 106 {
 107   ROW_ACTIVATED,
 108   TEST_EXPAND_ROW,
 109   TEST_COLLAPSE_ROW,
 110   ROW_EXPANDED,
 111   ROW_COLLAPSED,
 112   COLUMNS_CHANGED,
 113   CURSOR_CHANGED,
 114   MOVE_CURSOR,
 115   SELECT_ALL,
 116   UNSELECT_ALL,
 117   SELECT_CURSOR_ROW,
 118   TOGGLE_CURSOR_ROW,
 119   EXPAND_COLLAPSE_CURSOR_ROW,
 120   SELECT_CURSOR_PARENT,
 121   START_INTERACTIVE_SEARCH,
 122   LAST_SIGNAL
 123 };
 124
 125 /* Properties */
 126 enum {
 127   PROP_0,
 128   PROP_MODEL,
 129   PROP_HADJUSTMENT,
 130   PROP_VADJUSTMENT,
 131   PROP_HEADERS_VISIBLE,
 132   PROP_HEADERS_CLICKABLE,
 133   PROP_EXPANDER_COLUMN,
 134   PROP_REORDERABLE,
 135   PROP_RULES_HINT,
 136   PROP_ENABLE_SEARCH,
 137   PROP_SEARCH_COLUMN,
 138   PROP_FIXED_HEIGHT_MODE,
 139   PROP_HOVER_SELECTION,
 140   PROP_HOVER_EXPAND,
 141   PROP_SHOW_EXPANDERS,
 142   PROP_LEVEL_INDENTATION,
 143   PROP_RUBBER_BANDING,
 144   PROP_ENABLE_GRID_LINES,
 145   PROP_ENABLE_TREE_LINES,
 146   PROP_TOOLTIP_COLUMN
 147 };
 148
 149 /* object signals */
 150 static void     gtk_tree_view_finalize             (GObject          *object);
 151 static void     gtk_tree_view_set_property         (GObject         *object,
 152                                                     guint            prop_id,
 153                                                     const GValue    *value,
 154                                                     GParamSpec      *pspec);
 155 static void     gtk_tree_view_get_property         (GObject         *object,
 156                                                     guint            prop_id,
 157                                                     GValue          *value,
 158                                                     GParamSpec      *pspec);
 159
 160 /* gtkobject signals */
 161 static void     gtk_tree_view_destroy              (GtkObject        *object);
 162
 163 /* gtkwidget signals */
 164 static void     gtk_tree_view_realize              (GtkWidget        *widget);
 165 static void     gtk_tree_view_unrealize            (GtkWidget        *widget);
 166 static void     gtk_tree_view_map                  (GtkWidget        *widget);
 167 static void     gtk_tree_view_size_request         (GtkWidget        *widget,
 168                                                     GtkRequisition   *requisition);
 169 static void     gtk_tree_view_size_allocate        (GtkWidget        *widget,
 170                                                     GtkAllocation    *allocation);
 171 static gboolean gtk_tree_view_expose               (GtkWidget        *widget,
 172                                                     GdkEventExpose   *event);
 173 static gboolean gtk_tree_view_key_press            (GtkWidget        *widget,
 174                                                     GdkEventKey      *event);
 175 static gboolean gtk_tree_view_key_release          (GtkWidget        *widget,
 176                                                     GdkEventKey      *event);
 177 static gboolean gtk_tree_view_motion               (GtkWidget        *widget,
 178                                                     GdkEventMotion   *event);
 179 static gboolean gtk_tree_view_enter_notify         (GtkWidget        *widget,
 180                                                     GdkEventCrossing *event);
 181 static gboolean gtk_tree_view_leave_notify         (GtkWidget        *widget,
 182                                                     GdkEventCrossing *event);
 183 static gboolean gtk_tree_view_button_press         (GtkWidget        *widget,
 184                                                     GdkEventButton   *event);
 185 static gboolean gtk_tree_view_button_release       (GtkWidget        *widget,
 186                                                     GdkEventButton   *event);
 187 static gboolean gtk_tree_view_grab_broken          (GtkWidget          *widget,
 188                                                     GdkEventGrabBroken *event);
 189 #if 0
 190 static gboolean gtk_tree_view_configure            (GtkWidget         *widget,
 191                                                     GdkEventConfigure *event);
 192 #endif
 193
 194 static void     gtk_tree_view_set_focus_child      (GtkContainer     *container,
 195                                                     GtkWidget        *child);
 196 static gint     gtk_tree_view_focus_out            (GtkWidget        *widget,
 197                                                     GdkEventFocus    *event);
 198 static gint     gtk_tree_view_focus                (GtkWidget        *widget,
 199                                                     GtkDirectionType  direction);
 200 static void     gtk_tree_view_grab_focus           (GtkWidget        *widget);
 201 static void     gtk_tree_view_style_set            (GtkWidget        *widget,
 202                                                     GtkStyle         *previous_style);
 203 static void     gtk_tree_view_grab_notify          (GtkWidget        *widget,
 204                                                     gboolean          was_grabbed);
 205 static void     gtk_tree_view_state_changed        (GtkWidget        *widget,
 206                                                     GtkStateType      previous_state);
 207
 208 /* container signals */
 209 static void     gtk_tree_view_remove               (GtkContainer     *container,
 210                                                     GtkWidget        *widget);
 211 static void     gtk_tree_view_forall               (GtkContainer     *container,
 212                                                     gboolean          include_internals,
 213                                                     GtkCallback       callback,
 214                                                     gpointer          callback_data);
 215
 216 /* Source side drag signals */
 217 static void gtk_tree_view_drag_begin       (GtkWidget        *widget,
 218                                             GdkDragContext   *context);
 219 static void gtk_tree_view_drag_end         (GtkWidget        *widget,
 220                                             GdkDragContext   *context);
 221 static void gtk_tree_view_drag_data_get    (GtkWidget        *widget,
 222                                             GdkDragContext   *context,
 223                                             GtkSelectionData *selection_data,
 224                                             guint             info,
 225                                             guint             time);
 226 static void gtk_tree_view_drag_data_delete (GtkWidget        *widget,
 227                                             GdkDragContext   *context);
 228
 229 /* Target side drag signals */
 230 static void     gtk_tree_view_drag_leave         (GtkWidget        *widget,
 231                                                   GdkDragContext   *context,
 232                                                   guint             time);
 233 static gboolean gtk_tree_view_drag_motion        (GtkWidget        *widget,
 234                                                   GdkDragContext   *context,
 235                                                   gint              x,
 236                                                   gint              y,
 237                                                   guint             time);
 238 static gboolean gtk_tree_view_drag_drop          (GtkWidget        *widget,
 239                                                   GdkDragContext   *context,
 240                                                   gint              x,
 241                                                   gint              y,
 242                                                   guint             time);
 243 static void     gtk_tree_view_drag_data_received (GtkWidget        *widget,
 244                                                   GdkDragContext   *context,
 245                                                   gint              x,
 246                                                   gint              y,
 247                                                   GtkSelectionData *selection_data,
 248                                                   guint             info,
 249                                                   guint             time);
 250
 251 /* tree_model signals */
 252 static void gtk_tree_view_set_adjustments                 (GtkTreeView     *tree_view,
 253                                                            GtkAdjustment   *hadj,
 254                                                            GtkAdjustment   *vadj);
 255 static gboolean gtk_tree_view_real_move_cursor            (GtkTreeView     *tree_view,
 256                                                            GtkMovementStep  step,
 257                                                            gint             count);
 258 static gboolean gtk_tree_view_real_select_all             (GtkTreeView     *tree_view);
 259 static gboolean gtk_tree_view_real_unselect_all           (GtkTreeView     *tree_view);
 260 static gboolean gtk_tree_view_real_select_cursor_row      (GtkTreeView     *tree_view,
 261                                                            gboolean         start_editing);
 262 static gboolean gtk_tree_view_real_toggle_cursor_row      (GtkTreeView     *tree_view);
 263 static gboolean gtk_tree_view_real_expand_collapse_cursor_row (GtkTreeView     *tree_view,
 264                                                                gboolean         logical,
 265                                                                gboolean         expand,
 266                                                                gboolean         open_all);
 267 static gboolean gtk_tree_view_real_select_cursor_parent   (GtkTreeView     *tree_view);
 268 static void gtk_tree_view_row_changed                     (GtkTreeModel    *model,
 269                                                            GtkTreePath     *path,
 270                                                            GtkTreeIter     *iter,
 271                                                            gpointer         data);
 272 static void gtk_tree_view_row_inserted                    (GtkTreeModel    *model,
 273                                                            GtkTreePath     *path,
 274                                                            GtkTreeIter     *iter,
 275                                                            gpointer         data);
 276 static void gtk_tree_view_row_has_child_toggled           (GtkTreeModel    *model,
 277                                                            GtkTreePath     *path,
 278                                                            GtkTreeIter     *iter,
 279                                                            gpointer         data);
 280 static void gtk_tree_view_row_deleted                     (GtkTreeModel    *model,
 281                                                            GtkTreePath     *path,
 282                                                            gpointer         data);
 283 static void gtk_tree_view_rows_reordered                  (GtkTreeModel    *model,
 284                                                            GtkTreePath     *parent,
 285                                                            GtkTreeIter     *iter,
 286                                                            gint            *new_order,
 287                                                            gpointer         data);
 288
 289 /* Incremental reflow */
 290 static gboolean validate_row             (GtkTreeView *tree_view,
 291                                           GtkRBTree   *tree,
 292                                           GtkRBNode   *node,
 293                                           GtkTreeIter *iter,
 294                                           GtkTreePath *path);
 295 static void     validate_visible_area    (GtkTreeView *tree_view);
 296 static gboolean validate_rows_handler    (GtkTreeView *tree_view);
 297 static gboolean do_validate_rows         (GtkTreeView *tree_view,
 298                                           gboolean     size_request);
 299 static gboolean validate_rows            (GtkTreeView *tree_view);
 300 static gboolean presize_handler_callback (gpointer     data);
 301 static void     install_presize_handler  (GtkTreeView *tree_view);
 302 static void     install_scroll_sync_handler (GtkTreeView *tree_view);
 303 static void     gtk_tree_view_set_top_row   (GtkTreeView *tree_view,
 304                                              GtkTreePath *path,
 305                                              gint         offset);
 306 static void     gtk_tree_view_dy_to_top_row (GtkTreeView *tree_view);
 307 static void     gtk_tree_view_top_row_to_dy (GtkTreeView *tree_view);
 308 static void     invalidate_empty_focus      (GtkTreeView *tree_view);
 309
 310 /* Internal functions */
 311 static gboolean gtk_tree_view_is_expander_column             (GtkTreeView        *tree_view,
 312                                                               GtkTreeViewColumn  *column);
 313 static void     gtk_tree_view_add_move_binding               (GtkBindingSet      *binding_set,
 314                                                               guint               keyval,
 315                                                               guint               modmask,
 316                                                               gboolean            add_shifted_binding,
 317                                                               GtkMovementStep     step,
 318                                                               gint                count);
 319 static gint     gtk_tree_view_unref_and_check_selection_tree (GtkTreeView        *tree_view,
 320                                                               GtkRBTree          *tree);
 321 static void     gtk_tree_view_queue_draw_path                (GtkTreeView        *tree_view,
 322                                                               GtkTreePath        *path,
 323                                                               const GdkRectangle *clip_rect);
 324 static void     gtk_tree_view_queue_draw_arrow               (GtkTreeView        *tree_view,
 325                                                               GtkRBTree          *tree,
 326                                                               GtkRBNode          *node,
 327                                                               const GdkRectangle *clip_rect);
 328 static void     gtk_tree_view_draw_arrow                     (GtkTreeView        *tree_view,
 329                                                               GtkRBTree          *tree,
 330                                                               GtkRBNode          *node,
 331                                                               gint                x,
 332                                                               gint                y);
 333 static void     gtk_tree_view_get_arrow_xrange               (GtkTreeView        *tree_view,
 334                                                               GtkRBTree          *tree,
 335                                                               gint               *x1,
 336                                                               gint               *x2);
 337 static gint     gtk_tree_view_new_column_width               (GtkTreeView        *tree_view,
 338                                                               gint                i,
 339                                                               gint               *x);
 340 static void     gtk_tree_view_adjustment_changed             (GtkAdjustment      *adjustment,
 341                                                               GtkTreeView        *tree_view);
 342 static void     gtk_tree_view_build_tree                     (GtkTreeView        *tree_view,
 343                                                               GtkRBTree          *tree,
 344                                                               GtkTreeIter        *iter,
 345                                                               gint                depth,
 346                                                               gboolean            recurse);
 347 static void     gtk_tree_view_clamp_node_visible             (GtkTreeView        *tree_view,
 348                                                               GtkRBTree          *tree,
 349                                                               GtkRBNode          *node);
 350 static void     gtk_tree_view_clamp_column_visible           (GtkTreeView        *tree_view,
 351                                                               GtkTreeViewColumn  *column,
 352                                                               gboolean            focus_to_cell);
 353 static gboolean gtk_tree_view_maybe_begin_dragging_row       (GtkTreeView        *tree_view,
 354                                                               GdkEventMotion     *event);
 355 static void     gtk_tree_view_focus_to_cursor                (GtkTreeView        *tree_view);
 356 static void     gtk_tree_view_move_cursor_up_down            (GtkTreeView        *tree_view,
 357                                                               gint                count);
 358 static void     gtk_tree_view_move_cursor_page_up_down       (GtkTreeView        *tree_view,
 359                                                               gint                count);
 360 static void     gtk_tree_view_move_cursor_left_right         (GtkTreeView        *tree_view,
 361                                                               gint                count);
 362 static void     gtk_tree_view_move_cursor_start_end          (GtkTreeView        *tree_view,
 363                                                               gint                count);
 364 static gboolean gtk_tree_view_real_collapse_row              (GtkTreeView        *tree_view,
 365                                                               GtkTreePath        *path,
 366                                                               GtkRBTree          *tree,
 367                                                               GtkRBNode          *node,
 368                                                               gboolean            animate);
 369 static gboolean gtk_tree_view_real_expand_row                (GtkTreeView        *tree_view,
 370                                                               GtkTreePath        *path,
 371                                                               GtkRBTree          *tree,
 372                                                               GtkRBNode          *node,
 373                                                               gboolean            open_all,
 374                                                               gboolean            animate);
 375 static void     gtk_tree_view_real_set_cursor                (GtkTreeView        *tree_view,
 376                                                               GtkTreePath        *path,
 377                                                               gboolean            clear_and_select,
 378                                                               gboolean            clamp_node);
 379 static gboolean gtk_tree_view_has_special_cell               (GtkTreeView        *tree_view);
 380 static void     column_sizing_notify                         (GObject            *object,
 381                                                               GParamSpec         *pspec,
 382                                                               gpointer            data);
 383 static gboolean expand_collapse_timeout                      (gpointer            data);
 384 static void     add_expand_collapse_timeout                  (GtkTreeView        *tree_view,
 385                                                               GtkRBTree          *tree,
 386                                                               GtkRBNode          *node,
 387                                                               gboolean            expand);
 388 static void     remove_expand_collapse_timeout               (GtkTreeView        *tree_view);
 389 static void     cancel_arrow_animation                       (GtkTreeView        *tree_view);
 390 static gboolean do_expand_collapse                           (GtkTreeView        *tree_view);
 391 static void     gtk_tree_view_stop_rubber_band               (GtkTreeView        *tree_view);
 392 static void     update_prelight                              (GtkTreeView        *tree_view,
 393                                                               int                 x,
 394                                                               int                 y);
 395
 396 /* interactive search */
 397 static void     gtk_tree_view_ensure_interactive_directory (GtkTreeView *tree_view);
 398 static void     gtk_tree_view_search_dialog_hide        (GtkWidget        *search_dialog,
 399                                                          GtkTreeView      *tree_view,
 400                                                          GdkDevice        *device);
 401 static void     gtk_tree_view_search_position_func      (GtkTreeView      *tree_view,
 402                                                          GtkWidget        *search_dialog,
 403                                                          gpointer          user_data);
 404 static void     gtk_tree_view_search_disable_popdown    (GtkEntry         *entry,
 405                                                          GtkMenu          *menu,
 406                                                          gpointer          data);
 407 static void     gtk_tree_view_search_preedit_changed    (GtkIMContext     *im_context,
 408                                                          GtkTreeView      *tree_view);
 409 static void     gtk_tree_view_search_activate           (GtkEntry         *entry,
 410                                                          GtkTreeView      *tree_view);
 411 static gboolean gtk_tree_view_real_search_enable_popdown(gpointer          data);
 412 static void     gtk_tree_view_search_enable_popdown     (GtkWidget        *widget,
 413                                                          gpointer          data);
 414 static gboolean gtk_tree_view_search_delete_event       (GtkWidget        *widget,
 415                                                          GdkEventAny      *event,
 416                                                          GtkTreeView      *tree_view);
 417 static gboolean gtk_tree_view_search_button_press_event (GtkWidget        *widget,
 418                                                          GdkEventButton   *event,
 419                                                          GtkTreeView      *tree_view);
 420 static gboolean gtk_tree_view_search_scroll_event       (GtkWidget        *entry,
 421                                                          GdkEventScroll   *event,
 422                                                          GtkTreeView      *tree_view);
 423 static gboolean gtk_tree_view_search_key_press_event    (GtkWidget        *entry,
 424                                                          GdkEventKey      *event,
 425                                                          GtkTreeView      *tree_view);
 426 static gboolean gtk_tree_view_search_move               (GtkWidget        *window,
 427                                                          GtkTreeView      *tree_view,
 428                                                          gboolean          up);
 429 static gboolean gtk_tree_view_search_equal_func         (GtkTreeModel     *model,
 430                                                          gint              column,
 431                                                          const gchar      *key,
 432                                                          GtkTreeIter      *iter,
 433                                                          gpointer          search_data);
 434 static gboolean gtk_tree_view_search_iter               (GtkTreeModel     *model,
 435                                                          GtkTreeSelection *selection,
 436                                                          GtkTreeIter      *iter,
 437                                                          const gchar      *text,
 438                                                          gint             *count,
 439                                                          gint              n);
 440 static void     gtk_tree_view_search_init               (GtkWidget        *entry,
 441                                                          GtkTreeView      *tree_view);
 442 static void     gtk_tree_view_put                       (GtkTreeView      *tree_view,
 443                                                          GtkWidget        *child_widget,
 444                                                          gint              x,
 445                                                          gint              y,
 446                                                          gint              width,
 447                                                          gint              height);
 448 static gboolean gtk_tree_view_start_editing             (GtkTreeView      *tree_view,
 449                                                          GtkTreePath      *cursor_path);
 450 static void gtk_tree_view_real_start_editing (GtkTreeView       *tree_view,
 451                                               GtkTreeViewColumn *column,
 452                                               GtkTreePath       *path,
 453                                               GtkCellEditable   *cell_editable,
 454                                               GdkRectangle      *cell_area,
 455                                               GdkEvent          *event,
 456                                               guint              flags);
 457 static void gtk_tree_view_stop_editing                  (GtkTreeView *tree_view,
 458                                                          gboolean     cancel_editing);
 459 static gboolean gtk_tree_view_real_start_interactive_search (GtkTreeView *tree_view,
 460                                                              GdkDevice   *device,
 461                                                              gboolean     keybinding);
 462 static gboolean gtk_tree_view_start_interactive_search      (GtkTreeView *tree_view);
 463 static GtkTreeViewColumn *gtk_tree_view_get_drop_column (GtkTreeView       *tree_view,
 464                                                          GtkTreeViewColumn *column,
 465                                                          gint               drop_position);
 466
 467 /* GtkBuildable */
 468 static void     gtk_tree_view_buildable_add_child          (GtkBuildable      *tree_view,
 469                                                             GtkBuilder        *builder,
 470                                                             GObject           *child,
 471                                                             const gchar       *type);
 472 static GObject *gtk_tree_view_buildable_get_internal_child (GtkBuildable      *buildable,
 473                                                             GtkBuilder        *builder,
 474                                                             const gchar       *childname);
 475 static void     gtk_tree_view_buildable_init               (GtkBuildableIface *iface);
 476
 477
 478 static gboolean scroll_row_timeout                   (gpointer     data);
 479 static void     add_scroll_timeout                   (GtkTreeView *tree_view);
 480 static void     remove_scroll_timeout                (GtkTreeView *tree_view);
 481
 482 static guint tree_view_signals [LAST_SIGNAL] = { 0 };
 483
 484 \f
 485
 486 /* GType Methods
 487  */
 488
 489 G_DEFINE_TYPE_WITH_CODE (GtkTreeView, gtk_tree_view, GTK_TYPE_CONTAINER,
 490                          G_IMPLEMENT_INTERFACE (GTK_TYPE_BUILDABLE,
 491                                                 gtk_tree_view_buildable_init))
 492
 493 static void
 494 gtk_tree_view_class_init (GtkTreeViewClass *class)
 495 {
 496   GObjectClass *o_class;
 497   GtkObjectClass *object_class;
 498   GtkWidgetClass *widget_class;
 499   GtkContainerClass *container_class;
 500   GtkBindingSet *binding_set;
 501
 502   binding_set = gtk_binding_set_by_class (class);
 503
 504   o_class = (GObjectClass *) class;
 505   object_class = (GtkObjectClass *) class;
 506   widget_class = (GtkWidgetClass *) class;
 507   container_class = (GtkContainerClass *) class;
 508
 509   /* GObject signals */
 510   o_class->set_property = gtk_tree_view_set_property;
 511   o_class->get_property = gtk_tree_view_get_property;
 512   o_class->finalize = gtk_tree_view_finalize;
 513
 514   /* GtkObject signals */
 515   object_class->destroy = gtk_tree_view_destroy;
 516
 517   /* GtkWidget signals */
 518   widget_class->map = gtk_tree_view_map;
 519   widget_class->realize = gtk_tree_view_realize;
 520   widget_class->unrealize = gtk_tree_view_unrealize;
 521   widget_class->size_request = gtk_tree_view_size_request;
 522   widget_class->size_allocate = gtk_tree_view_size_allocate;
 523   widget_class->button_press_event = gtk_tree_view_button_press;
 524   widget_class->button_release_event = gtk_tree_view_button_release;
 525   widget_class->grab_broken_event = gtk_tree_view_grab_broken;
 526   /*widget_class->configure_event = gtk_tree_view_configure;*/
 527   widget_class->motion_notify_event = gtk_tree_view_motion;
 528   widget_class->expose_event = gtk_tree_view_expose;
 529   widget_class->key_press_event = gtk_tree_view_key_press;
 530   widget_class->key_release_event = gtk_tree_view_key_release;
 531   widget_class->enter_notify_event = gtk_tree_view_enter_notify;
 532   widget_class->leave_notify_event = gtk_tree_view_leave_notify;
 533   widget_class->focus_out_event = gtk_tree_view_focus_out;
 534   widget_class->drag_begin = gtk_tree_view_drag_begin;
 535   widget_class->drag_end = gtk_tree_view_drag_end;
 536   widget_class->drag_data_get = gtk_tree_view_drag_data_get;
 537   widget_class->drag_data_delete = gtk_tree_view_drag_data_delete;
 538   widget_class->drag_leave = gtk_tree_view_drag_leave;
 539   widget_class->drag_motion = gtk_tree_view_drag_motion;
 540   widget_class->drag_drop = gtk_tree_view_drag_drop;
 541   widget_class->drag_data_received = gtk_tree_view_drag_data_received;
 542   widget_class->focus = gtk_tree_view_focus;
 543   widget_class->grab_focus = gtk_tree_view_grab_focus;
 544   widget_class->style_set = gtk_tree_view_style_set;
 545   widget_class->grab_notify = gtk_tree_view_grab_notify;
 546   widget_class->state_changed = gtk_tree_view_state_changed;
 547
 548   /* GtkContainer signals */
 549   container_class->remove = gtk_tree_view_remove;
 550   container_class->forall = gtk_tree_view_forall;
 551   container_class->set_focus_child = gtk_tree_view_set_focus_child;
 552
 553   class->set_scroll_adjustments = gtk_tree_view_set_adjustments;
 554   class->move_cursor = gtk_tree_view_real_move_cursor;
 555   class->select_all = gtk_tree_view_real_select_all;
 556   class->unselect_all = gtk_tree_view_real_unselect_all;
 557   class->select_cursor_row = gtk_tree_view_real_select_cursor_row;
 558   class->toggle_cursor_row = gtk_tree_view_real_toggle_cursor_row;
 559   class->expand_collapse_cursor_row = gtk_tree_view_real_expand_collapse_cursor_row;
 560   class->select_cursor_parent = gtk_tree_view_real_select_cursor_parent;
 561   class->start_interactive_search = gtk_tree_view_start_interactive_search;
 562
 563   /* Properties */
 564
 565   g_object_class_install_property (o_class,
 566                                    PROP_MODEL,
 567                                    g_param_spec_object ("model",
 568                                                         P_("TreeView Model"),
 569                                                         P_("The model for the tree view"),
 570                                                         GTK_TYPE_TREE_MODEL,
 571                                                         GTK_PARAM_READWRITE));
 572
 573   g_object_class_install_property (o_class,
 574                                    PROP_HADJUSTMENT,
 575                                    g_param_spec_object ("hadjustment",
 576                                                         P_("Horizontal Adjustment"),
 577                                                         P_("Horizontal Adjustment for the widget"),
 578                                                         GTK_TYPE_ADJUSTMENT,
 579                                                         GTK_PARAM_READWRITE));
 580
 581   g_object_class_install_property (o_class,
 582                                    PROP_VADJUSTMENT,
 583                                    g_param_spec_object ("vadjustment",
 584                                                         P_("Vertical Adjustment"),
 585                                                         P_("Vertical Adjustment for the widget"),
 586                                                         GTK_TYPE_ADJUSTMENT,
 587                                                         GTK_PARAM_READWRITE));
 588
 589   g_object_class_install_property (o_class,
 590                                    PROP_HEADERS_VISIBLE,
 591                                    g_param_spec_boolean ("headers-visible",
 592                                                          P_("Headers Visible"),
 593                                                          P_("Show the column header buttons"),
 594                                                          TRUE,
 595                                                          GTK_PARAM_READWRITE));
 596
 597   g_object_class_install_property (o_class,
 598                                    PROP_HEADERS_CLICKABLE,
 599                                    g_param_spec_boolean ("headers-clickable",
 600                                                          P_("Headers Clickable"),
 601                                                          P_("Column headers respond to click events"),
 602                                                          TRUE,
 603                                                          GTK_PARAM_READWRITE));
 604
 605   g_object_class_install_property (o_class,
 606                                    PROP_EXPANDER_COLUMN,
 607                                    g_param_spec_object ("expander-column",
 608                                                         P_("Expander Column"),
 609                                                         P_("Set the column for the expander column"),
 610                                                         GTK_TYPE_TREE_VIEW_COLUMN,
 611                                                         GTK_PARAM_READWRITE));
 612
 613   g_object_class_install_property (o_class,
 614                                    PROP_REORDERABLE,
 615                                    g_param_spec_boolean ("reorderable",
 616                                                          P_("Reorderable"),
 617                                                          P_("View is reorderable"),
 618                                                          FALSE,
 619                                                          GTK_PARAM_READWRITE));
 620
 621   g_object_class_install_property (o_class,
 622                                    PROP_RULES_HINT,
 623                                    g_param_spec_boolean ("rules-hint",
 624                                                          P_("Rules Hint"),
 625                                                          P_("Set a hint to the theme engine to draw rows in alternating colors"),
 626                                                          FALSE,
 627                                                          GTK_PARAM_READWRITE));
 628
 629     g_object_class_install_property (o_class,
 630                                      PROP_ENABLE_SEARCH,
 631                                      g_param_spec_boolean ("enable-search",
 632                                                            P_("Enable Search"),
 633                                                            P_("View allows user to search through columns interactively"),
 634                                                            TRUE,
 635                                                            GTK_PARAM_READWRITE));
 636
 637     g_object_class_install_property (o_class,
 638                                      PROP_SEARCH_COLUMN,
 639                                      g_param_spec_int ("search-column",
 640                                                        P_("Search Column"),
 641                                                        P_("Model column to search through during interactive search"),
 642                                                        -1,
 643                                                        G_MAXINT,
 644                                                        -1,
 645                                                        GTK_PARAM_READWRITE));
 646
 647     /**
 648      * GtkTreeView:fixed-height-mode:
 649      *
 650      * Setting the ::fixed-height-mode property to %TRUE speeds up
 651      * #GtkTreeView by assuming that all rows have the same height.
 652      * Only enable this option if all rows are the same height.
 653      * Please see gtk_tree_view_set_fixed_height_mode() for more
 654      * information on this option.
 655      *
 656      * Since: 2.4
 657      **/
 658     g_object_class_install_property (o_class,
 659                                      PROP_FIXED_HEIGHT_MODE,
 660                                      g_param_spec_boolean ("fixed-height-mode",
 661                                                            P_("Fixed Height Mode"),
 662                                                            P_("Speeds up GtkTreeView by assuming that all rows have the same height"),
 663                                                            FALSE,
 664                                                            GTK_PARAM_READWRITE));
 665
 666     /**
 667      * GtkTreeView:hover-selection:
 668      *
 669      * Enables of disables the hover selection mode of @tree_view.
 670      * Hover selection makes the selected row follow the pointer.
 671      * Currently, this works only for the selection modes
 672      * %GTK_SELECTION_SINGLE and %GTK_SELECTION_BROWSE.
 673      *
 674      * This mode is primarily intended for treeviews in popups, e.g.
 675      * in #GtkComboBox or #GtkEntryCompletion.
 676      *
 677      * Since: 2.6
 678      */
 679     g_object_class_install_property (o_class,
 680                                      PROP_HOVER_SELECTION,
 681                                      g_param_spec_boolean ("hover-selection",
 682                                                            P_("Hover Selection"),
 683                                                            P_("Whether the selection should follow the pointer"),
 684                                                            FALSE,
 685                                                            GTK_PARAM_READWRITE));
 686
 687     /**
 688      * GtkTreeView:hover-expand:
 689      *
 690      * Enables of disables the hover expansion mode of @tree_view.
 691      * Hover expansion makes rows expand or collapse if the pointer moves
 692      * over them.
 693      *
 694      * This mode is primarily intended for treeviews in popups, e.g.
 695      * in #GtkComboBox or #GtkEntryCompletion.
 696      *
 697      * Since: 2.6
 698      */
 699     g_object_class_install_property (o_class,
 700                                      PROP_HOVER_EXPAND,
 701                                      g_param_spec_boolean ("hover-expand",
 702                                                            P_("Hover Expand"),
 703                                                            P_("Whether rows should be expanded/collapsed when the pointer moves over them"),
 704                                                            FALSE,
 705                                                            GTK_PARAM_READWRITE));
 706
 707     /**
 708      * GtkTreeView:show-expanders:
 709      *
 710      * %TRUE if the view has expanders.
 711      *
 712      * Since: 2.12
 713      */
 714     g_object_class_install_property (o_class,
 715                                      PROP_SHOW_EXPANDERS,
 716                                      g_param_spec_boolean ("show-expanders",
 717                                                            P_("Show Expanders"),
 718                                                            P_("View has expanders"),
 719                                                            TRUE,
 720                                                            GTK_PARAM_READWRITE));
 721
 722     /**
 723      * GtkTreeView:level-indentation:
 724      *
 725      * Extra indentation for each level.
 726      *
 727      * Since: 2.12
 728      */
 729     g_object_class_install_property (o_class,
 730                                      PROP_LEVEL_INDENTATION,
 731                                      g_param_spec_int ("level-indentation",
 732                                                        P_("Level Indentation"),
 733                                                        P_("Extra indentation for each level"),
 734                                                        0,
 735                                                        G_MAXINT,
 736                                                        0,
 737                                                        GTK_PARAM_READWRITE));
 738
 739     g_object_class_install_property (o_class,
 740                                      PROP_RUBBER_BANDING,
 741                                      g_param_spec_boolean ("rubber-banding",
 742                                                            P_("Rubber Banding"),
 743                                                            P_("Whether to enable selection of multiple items by dragging the mouse pointer"),
 744                                                            FALSE,
 745                                                            GTK_PARAM_READWRITE));
 746
 747     g_object_class_install_property (o_class,
 748                                      PROP_ENABLE_GRID_LINES,
 749                                      g_param_spec_enum ("enable-grid-lines",
 750                                                         P_("Enable Grid Lines"),
 751                                                         P_("Whether grid lines should be drawn in the tree view"),
 752                                                         GTK_TYPE_TREE_VIEW_GRID_LINES,
 753                                                         GTK_TREE_VIEW_GRID_LINES_NONE,
 754                                                         GTK_PARAM_READWRITE));
 755
 756     g_object_class_install_property (o_class,
 757                                      PROP_ENABLE_TREE_LINES,
 758                                      g_param_spec_boolean ("enable-tree-lines",
 759                                                            P_("Enable Tree Lines"),
 760                                                            P_("Whether tree lines should be drawn in the tree view"),
 761                                                            FALSE,
 762                                                            GTK_PARAM_READWRITE));
 763
 764     g_object_class_install_property (o_class,
 765                                      PROP_TOOLTIP_COLUMN,
 766                                      g_param_spec_int ("tooltip-column",
 767                                                        P_("Tooltip Column"),
 768                                                        P_("The column in the model containing the tooltip texts for the rows"),
 769                                                        -1,
 770                                                        G_MAXINT,
 771                                                        -1,
 772                                                        GTK_PARAM_READWRITE));
 773
 774   /* Style properties */
 775 #define _TREE_VIEW_EXPANDER_SIZE 12
 776 #define _TREE_VIEW_VERTICAL_SEPARATOR 2
 777 #define _TREE_VIEW_HORIZONTAL_SEPARATOR 2
 778
 779   gtk_widget_class_install_style_property (widget_class,
 780                                            g_param_spec_int ("expander-size",
 781                                                              P_("Expander Size"),
 782                                                              P_("Size of the expander arrow"),
 783                                                              0,
 784                                                              G_MAXINT,
 785                                                              _TREE_VIEW_EXPANDER_SIZE,
 786                                                              GTK_PARAM_READABLE));
 787
 788   gtk_widget_class_install_style_property (widget_class,
 789                                            g_param_spec_int ("vertical-separator",
 790                                                              P_("Vertical Separator Width"),
 791                                                              P_("Vertical space between cells.  Must be an even number"),
 792                                                              0,
 793                                                              G_MAXINT,
 794                                                              _TREE_VIEW_VERTICAL_SEPARATOR,
 795                                                              GTK_PARAM_READABLE));
 796
 797   gtk_widget_class_install_style_property (widget_class,
 798                                            g_param_spec_int ("horizontal-separator",
 799                                                              P_("Horizontal Separator Width"),
 800                                                              P_("Horizontal space between cells.  Must be an even number"),
 801                                                              0,
 802                                                              G_MAXINT,
 803                                                              _TREE_VIEW_HORIZONTAL_SEPARATOR,
 804                                                              GTK_PARAM_READABLE));
 805
 806   gtk_widget_class_install_style_property (widget_class,
 807                                            g_param_spec_boolean ("allow-rules",
 808                                                                  P_("Allow Rules"),
 809                                                                  P_("Allow drawing of alternating color rows"),
 810                                                                  TRUE,
 811                                                                  GTK_PARAM_READABLE));
 812
 813   gtk_widget_class_install_style_property (widget_class,
 814                                            g_param_spec_boolean ("indent-expanders",
 815                                                                  P_("Indent Expanders"),
 816                                                                  P_("Make the expanders indented"),
 817                                                                  TRUE,
 818                                                                  GTK_PARAM_READABLE));
 819
 820   gtk_widget_class_install_style_property (widget_class,
 821                                            g_param_spec_boxed ("even-row-color",
 822                                                                P_("Even Row Color"),
 823                                                                P_("Color to use for even rows"),
 824                                                                GDK_TYPE_COLOR,
 825                                                                GTK_PARAM_READABLE));
 826
 827   gtk_widget_class_install_style_property (widget_class,
 828                                            g_param_spec_boxed ("odd-row-color",
 829                                                                P_("Odd Row Color"),
 830                                                                P_("Color to use for odd rows"),
 831                                                                GDK_TYPE_COLOR,
 832                                                                GTK_PARAM_READABLE));
 833
 834   gtk_widget_class_install_style_property (widget_class,
 835                                            g_param_spec_boolean ("row-ending-details",
 836                                                                  P_("Row Ending details"),
 837                                                                  P_("Enable extended row background theming"),
 838                                                                  FALSE,
 839                                                                  GTK_PARAM_READABLE));
 840
 841   gtk_widget_class_install_style_property (widget_class,
 842                                            g_param_spec_int ("grid-line-width",
 843                                                              P_("Grid line width"),
 844                                                              P_("Width, in pixels, of the tree view grid lines"),
 845                                                              0, G_MAXINT, 1,
 846                                                              GTK_PARAM_READABLE));
 847
 848   gtk_widget_class_install_style_property (widget_class,
 849                                            g_param_spec_int ("tree-line-width",
 850                                                              P_("Tree line width"),
 851                                                              P_("Width, in pixels, of the tree view lines"),
 852                                                              0, G_MAXINT, 1,
 853                                                              GTK_PARAM_READABLE));
 854
 855   gtk_widget_class_install_style_property (widget_class,
 856                                            g_param_spec_string ("grid-line-pattern",
 857                                                                 P_("Grid line pattern"),
 858                                                                 P_("Dash pattern used to draw the tree view grid lines"),
 859                                                                 "\1\1",
 860                                                                 GTK_PARAM_READABLE));
 861
 862   gtk_widget_class_install_style_property (widget_class,
 863                                            g_param_spec_string ("tree-line-pattern",
 864                                                                 P_("Tree line pattern"),
 865                                                                 P_("Dash pattern used to draw the tree view lines"),
 866                                                                 "\1\1",
 867                                                                 GTK_PARAM_READABLE));
 868
 869   /* Signals */
 870   /**
 871    * GtkTreeView::set-scroll-adjustments
 872    * @horizontal: the horizontal #GtkAdjustment
 873    * @vertical: the vertical #GtkAdjustment
 874    *
 875    * Set the scroll adjustments for the tree view. Usually scrolled containers
 876    * like #GtkScrolledWindow will emit this signal to connect two instances
 877    * of #GtkScrollbar to the scroll directions of the #GtkTreeView.
 878    */
 879   widget_class->set_scroll_adjustments_signal =
 880     g_signal_new (I_("set-scroll-adjustments"),
 881                   G_TYPE_FROM_CLASS (o_class),
 882                   G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
 883                   G_STRUCT_OFFSET (GtkTreeViewClass, set_scroll_adjustments),
 884                   NULL, NULL,
 885                   _gtk_marshal_VOID__OBJECT_OBJECT,
 886                   G_TYPE_NONE, 2,
 887                   GTK_TYPE_ADJUSTMENT,
 888                   GTK_TYPE_ADJUSTMENT);
 889
 890   /**
 891    * GtkTreeView::row-activated:
 892    * @tree_view: the object on which the signal is emitted
 893    * @path: the #GtkTreePath for the activated row
 894    * @column: the #GtkTreeViewColumn in which the activation occurred
 895    *
 896    * The "row-activated" signal is emitted when the method
 897    * gtk_tree_view_row_activated() is called or the user double clicks
 898    * a treeview row. It is also emitted when a non-editable row is
 899    * selected and one of the keys: Space, Shift+Space, Return or
 900    * Enter is pressed.
 901    *
 902    * For selection handling refer to the <link linkend="TreeWidget">tree
 903    * widget conceptual overview</link> as well as #GtkTreeSelection.
 904    */
 905   tree_view_signals[ROW_ACTIVATED] =
 906     g_signal_new (I_("row-activated"),
 907                   G_TYPE_FROM_CLASS (o_class),
 908                   G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
 909                   G_STRUCT_OFFSET (GtkTreeViewClass, row_activated),
 910                   NULL, NULL,
 911                   _gtk_marshal_VOID__BOXED_OBJECT,
 912                   G_TYPE_NONE, 2,
 913                   GTK_TYPE_TREE_PATH,
 914                   GTK_TYPE_TREE_VIEW_COLUMN);
 915
 916   /**
 917    * GtkTreeView::test-expand-row:
 918    * @tree_view: the object on which the signal is emitted
 919    * @iter: the tree iter of the row to expand
 920    * @path: a tree path that points to the row
 921    *
 922    * The given row is about to be expanded (show its children nodes). Use this
 923    * signal if you need to control the expandability of individual rows.
 924    *
 925    * Returns: %FALSE to allow expansion, %TRUE to reject
 926    */
 927   tree_view_signals[TEST_EXPAND_ROW] =
 928     g_signal_new (I_("test-expand-row"),
 929                   G_TYPE_FROM_CLASS (o_class),
 930                   G_SIGNAL_RUN_LAST,
 931                   G_STRUCT_OFFSET (GtkTreeViewClass, test_expand_row),
 932                   _gtk_boolean_handled_accumulator, NULL,
 933                   _gtk_marshal_BOOLEAN__BOXED_BOXED,
 934                   G_TYPE_BOOLEAN, 2,
 935                   GTK_TYPE_TREE_ITER,
 936                   GTK_TYPE_TREE_PATH);
 937
 938   /**
 939    * GtkTreeView::test-collapse-row:
 940    * @tree_view: the object on which the signal is emitted
 941    * @iter: the tree iter of the row to collapse
 942    * @path: a tree path that points to the row
 943    *
 944    * The given row is about to be collapsed (hide its children nodes). Use this
 945    * signal if you need to control the collapsibility of individual rows.
 946    *
 947    * Returns: %FALSE to allow collapsing, %TRUE to reject
 948    */
 949   tree_view_signals[TEST_COLLAPSE_ROW] =
 950     g_signal_new (I_("test-collapse-row"),
 951                   G_TYPE_FROM_CLASS (o_class),
 952                   G_SIGNAL_RUN_LAST,
 953                   G_STRUCT_OFFSET (GtkTreeViewClass, test_collapse_row),
 954                   _gtk_boolean_handled_accumulator, NULL,
 955                   _gtk_marshal_BOOLEAN__BOXED_BOXED,
 956                   G_TYPE_BOOLEAN, 2,
 957                   GTK_TYPE_TREE_ITER,
 958                   GTK_TYPE_TREE_PATH);
 959
 960   /**
 961    * GtkTreeView::row-expanded:
 962    * @tree_view: the object on which the signal is emitted
 963    * @iter: the tree iter of the expanded row
 964    * @path: a tree path that points to the row
 965    *
 966    * The given row has been expanded (child nodes are shown).
 967    */
 968   tree_view_signals[ROW_EXPANDED] =
 969     g_signal_new (I_("row-expanded"),
 970                   G_TYPE_FROM_CLASS (o_class),
 971                   G_SIGNAL_RUN_LAST,
 972                   G_STRUCT_OFFSET (GtkTreeViewClass, row_expanded),
 973                   NULL, NULL,
 974                   _gtk_marshal_VOID__BOXED_BOXED,
 975                   G_TYPE_NONE, 2,
 976                   GTK_TYPE_TREE_ITER,
 977                   GTK_TYPE_TREE_PATH);
 978
 979   /**
 980    * GtkTreeView::row-collapsed:
 981    * @tree_view: the object on which the signal is emitted
 982    * @iter: the tree iter of the collapsed row
 983    * @path: a tree path that points to the row
 984    *
 985    * The given row has been collapsed (child nodes are hidden).
 986    */
 987   tree_view_signals[ROW_COLLAPSED] =
 988     g_signal_new (I_("row-collapsed"),
 989                   G_TYPE_FROM_CLASS (o_class),
 990                   G_SIGNAL_RUN_LAST,
 991                   G_STRUCT_OFFSET (GtkTreeViewClass, row_collapsed),
 992                   NULL, NULL,
 993                   _gtk_marshal_VOID__BOXED_BOXED,
 994                   G_TYPE_NONE, 2,
 995                   GTK_TYPE_TREE_ITER,
 996                   GTK_TYPE_TREE_PATH);
 997
 998   /**
 999    * GtkTreeView::columns-changed:
1000    * @tree_view: the object on which the signal is emitted
1001    *
1002    * The number of columns of the treeview has changed.
1003    */
1004   tree_view_signals[COLUMNS_CHANGED] =
1005     g_signal_new (I_("columns-changed"),
1006                   G_TYPE_FROM_CLASS (o_class),
1007                   G_SIGNAL_RUN_LAST,
1008                   G_STRUCT_OFFSET (GtkTreeViewClass, columns_changed),
1009                   NULL, NULL,
1010                   _gtk_marshal_VOID__VOID,
1011                   G_TYPE_NONE, 0);
1012
1013   /**
1014    * GtkTreeView::cursor-changed:
1015    * @tree_view: the object on which the signal is emitted
1016    *
1017    * The position of the cursor (focused cell) has changed.
1018    */
1019   tree_view_signals[CURSOR_CHANGED] =
1020     g_signal_new (I_("cursor-changed"),
1021                   G_TYPE_FROM_CLASS (o_class),
1022                   G_SIGNAL_RUN_LAST,
1023                   G_STRUCT_OFFSET (GtkTreeViewClass, cursor_changed),
1024                   NULL, NULL,
1025                   _gtk_marshal_VOID__VOID,
1026                   G_TYPE_NONE, 0);
1027
1028   tree_view_signals[MOVE_CURSOR] =
1029     g_signal_new (I_("move-cursor"),
1030                   G_TYPE_FROM_CLASS (object_class),
1031                   G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
1032                   G_STRUCT_OFFSET (GtkTreeViewClass, move_cursor),
1033                   NULL, NULL,
1034                   _gtk_marshal_BOOLEAN__ENUM_INT,
1035                   G_TYPE_BOOLEAN, 2,
1036                   GTK_TYPE_MOVEMENT_STEP,
1037                   G_TYPE_INT);
1038
1039   tree_view_signals[SELECT_ALL] =
1040     g_signal_new (I_("select-all"),
1041                   G_TYPE_FROM_CLASS (object_class),
1042                   G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
1043                   G_STRUCT_OFFSET (GtkTreeViewClass, select_all),
1044                   NULL, NULL,
1045                   _gtk_marshal_BOOLEAN__VOID,
1046                   G_TYPE_BOOLEAN, 0);
1047
1048   tree_view_signals[UNSELECT_ALL] =
1049     g_signal_new (I_("unselect-all"),
1050                   G_TYPE_FROM_CLASS (object_class),
1051                   G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
1052                   G_STRUCT_OFFSET (GtkTreeViewClass, unselect_all),
1053                   NULL, NULL,
1054                   _gtk_marshal_BOOLEAN__VOID,
1055                   G_TYPE_BOOLEAN, 0);
1056
1057   tree_view_signals[SELECT_CURSOR_ROW] =
1058     g_signal_new (I_("select-cursor-row"),
1059                   G_TYPE_FROM_CLASS (object_class),
1060                   G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
1061                   G_STRUCT_OFFSET (GtkTreeViewClass, select_cursor_row),
1062                   NULL, NULL,
1063                   _gtk_marshal_BOOLEAN__BOOLEAN,
1064                   G_TYPE_BOOLEAN, 1,
1065                   G_TYPE_BOOLEAN);
1066
1067   tree_view_signals[TOGGLE_CURSOR_ROW] =
1068     g_signal_new (I_("toggle-cursor-row"),
1069                   G_TYPE_FROM_CLASS (object_class),
1070                   G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
1071                   G_STRUCT_OFFSET (GtkTreeViewClass, toggle_cursor_row),
1072                   NULL, NULL,
1073                   _gtk_marshal_BOOLEAN__VOID,
1074                   G_TYPE_BOOLEAN, 0);
1075
1076   tree_view_signals[EXPAND_COLLAPSE_CURSOR_ROW] =
1077     g_signal_new (I_("expand-collapse-cursor-row"),
1078                   G_TYPE_FROM_CLASS (object_class),
1079                   G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
1080                   G_STRUCT_OFFSET (GtkTreeViewClass, expand_collapse_cursor_row),
1081                   NULL, NULL,
1082                   _gtk_marshal_BOOLEAN__BOOLEAN_BOOLEAN_BOOLEAN,
1083                   G_TYPE_BOOLEAN, 3,
1084                   G_TYPE_BOOLEAN,
1085                   G_TYPE_BOOLEAN,
1086                   G_TYPE_BOOLEAN);
1087
1088   tree_view_signals[SELECT_CURSOR_PARENT] =
1089     g_signal_new (I_("select-cursor-parent"),
1090                   G_TYPE_FROM_CLASS (object_class),
1091                   G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
1092                   G_STRUCT_OFFSET (GtkTreeViewClass, select_cursor_parent),
1093                   NULL, NULL,
1094                   _gtk_marshal_BOOLEAN__VOID,
1095                   G_TYPE_BOOLEAN, 0);
1096
1097   tree_view_signals[START_INTERACTIVE_SEARCH] =
1098     g_signal_new (I_("start-interactive-search"),
1099                   G_TYPE_FROM_CLASS (object_class),
1100                   G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
1101                   G_STRUCT_OFFSET (GtkTreeViewClass, start_interactive_search),
1102                   NULL, NULL,
1103                   _gtk_marshal_BOOLEAN__VOID,
1104                   G_TYPE_BOOLEAN, 0);
1105
1106   /* Key bindings */
1107   gtk_tree_view_add_move_binding (binding_set, GDK_Up, 0, TRUE,
1108                                   GTK_MOVEMENT_DISPLAY_LINES, -1);
1109   gtk_tree_view_add_move_binding (binding_set, GDK_KP_Up, 0, TRUE,
1110                                   GTK_MOVEMENT_DISPLAY_LINES, -1);
1111
1112   gtk_tree_view_add_move_binding (binding_set, GDK_Down, 0, TRUE,
1113                                   GTK_MOVEMENT_DISPLAY_LINES, 1);
1114   gtk_tree_view_add_move_binding (binding_set, GDK_KP_Down, 0, TRUE,
1115                                   GTK_MOVEMENT_DISPLAY_LINES, 1);
1116
1117   gtk_tree_view_add_move_binding (binding_set, GDK_p, GDK_CONTROL_MASK, FALSE,
1118                                   GTK_MOVEMENT_DISPLAY_LINES, -1);
1119
1120   gtk_tree_view_add_move_binding (binding_set, GDK_n, GDK_CONTROL_MASK, FALSE,
1121                                   GTK_MOVEMENT_DISPLAY_LINES, 1);
1122
1123   gtk_tree_view_add_move_binding (binding_set, GDK_Home, 0, TRUE,
1124                                   GTK_MOVEMENT_BUFFER_ENDS, -1);
1125   gtk_tree_view_add_move_binding (binding_set, GDK_KP_Home, 0, TRUE,
1126                                   GTK_MOVEMENT_BUFFER_ENDS, -1);
1127
1128   gtk_tree_view_add_move_binding (binding_set, GDK_End, 0, TRUE,
1129                                   GTK_MOVEMENT_BUFFER_ENDS, 1);
1130   gtk_tree_view_add_move_binding (binding_set, GDK_KP_End, 0, TRUE,
1131                                   GTK_MOVEMENT_BUFFER_ENDS, 1);
1132
1133   gtk_tree_view_add_move_binding (binding_set, GDK_Page_Up, 0, TRUE,
1134                                   GTK_MOVEMENT_PAGES, -1);
1135   gtk_tree_view_add_move_binding (binding_set, GDK_KP_Page_Up, 0, TRUE,
1136                                   GTK_MOVEMENT_PAGES, -1);
1137
1138   gtk_tree_view_add_move_binding (binding_set, GDK_Page_Down, 0, TRUE,
1139                                   GTK_MOVEMENT_PAGES, 1);
1140   gtk_tree_view_add_move_binding (binding_set, GDK_KP_Page_Down, 0, TRUE,
1141                                   GTK_MOVEMENT_PAGES, 1);
1142
1143
1144   gtk_binding_entry_add_signal (binding_set, GDK_Right, 0, "move-cursor", 2,
1145                                 G_TYPE_ENUM, GTK_MOVEMENT_VISUAL_POSITIONS,
1146                                 G_TYPE_INT, 1);
1147
1148   gtk_binding_entry_add_signal (binding_set, GDK_Left, 0, "move-cursor", 2,
1149                                 G_TYPE_ENUM, GTK_MOVEMENT_VISUAL_POSITIONS,
1150                                 G_TYPE_INT, -1);
1151
1152   gtk_binding_entry_add_signal (binding_set, GDK_KP_Right, 0, "move-cursor", 2,
1153                                 G_TYPE_ENUM, GTK_MOVEMENT_VISUAL_POSITIONS,
1154                                 G_TYPE_INT, 1);
1155
1156   gtk_binding_entry_add_signal (binding_set, GDK_KP_Left, 0, "move-cursor", 2,
1157                                 G_TYPE_ENUM, GTK_MOVEMENT_VISUAL_POSITIONS,
1158                                 G_TYPE_INT, -1);
1159
1160   gtk_binding_entry_add_signal (binding_set, GDK_Right, GDK_CONTROL_MASK,
1161                                 "move-cursor", 2,
1162                                 G_TYPE_ENUM, GTK_MOVEMENT_VISUAL_POSITIONS,
1163                                 G_TYPE_INT, 1);
1164
1165   gtk_binding_entry_add_signal (binding_set, GDK_Left, GDK_CONTROL_MASK,
1166                                 "move-cursor", 2,
1167                                 G_TYPE_ENUM, GTK_MOVEMENT_VISUAL_POSITIONS,
1168                                 G_TYPE_INT, -1);
1169
1170   gtk_binding_entry_add_signal (binding_set, GDK_KP_Right, GDK_CONTROL_MASK,
1171                                 "move-cursor", 2,
1172                                 G_TYPE_ENUM, GTK_MOVEMENT_VISUAL_POSITIONS,
1173                                 G_TYPE_INT, 1);
1174
1175   gtk_binding_entry_add_signal (binding_set, GDK_KP_Left, GDK_CONTROL_MASK,
1176                                 "move-cursor", 2,
1177                                 G_TYPE_ENUM, GTK_MOVEMENT_VISUAL_POSITIONS,
1178                                 G_TYPE_INT, -1);
1179
1180   gtk_binding_entry_add_signal (binding_set, GDK_space, GDK_CONTROL_MASK, "toggle-cursor-row", 0);
1181   gtk_binding_entry_add_signal (binding_set, GDK_KP_Space, GDK_CONTROL_MASK, "toggle-cursor-row", 0);
1182
1183   gtk_binding_entry_add_signal (binding_set, GDK_a, GDK_CONTROL_MASK, "select-all", 0);
1184   gtk_binding_entry_add_signal (binding_set, GDK_slash, GDK_CONTROL_MASK, "select-all", 0);
1185
1186   gtk_binding_entry_add_signal (binding_set, GDK_A, GDK_CONTROL_MASK | GDK_SHIFT_MASK, "unselect-all", 0);
1187   gtk_binding_entry_add_signal (binding_set, GDK_backslash, GDK_CONTROL_MASK, "unselect-all", 0);
1188
1189   gtk_binding_entry_add_signal (binding_set, GDK_space, GDK_SHIFT_MASK, "select-cursor-row", 1,
1190                                 G_TYPE_BOOLEAN, TRUE);
1191   gtk_binding_entry_add_signal (binding_set, GDK_KP_Space, GDK_SHIFT_MASK, "select-cursor-row", 1,
1192                                 G_TYPE_BOOLEAN, TRUE);
1193
1194   gtk_binding_entry_add_signal (binding_set, GDK_space, 0, "select-cursor-row", 1,
1195                                 G_TYPE_BOOLEAN, TRUE);
1196   gtk_binding_entry_add_signal (binding_set, GDK_KP_Space, 0, "select-cursor-row", 1,
1197                                 G_TYPE_BOOLEAN, TRUE);
1198   gtk_binding_entry_add_signal (binding_set, GDK_Return, 0, "select-cursor-row", 1,
1199                                 G_TYPE_BOOLEAN, TRUE);
1200   gtk_binding_entry_add_signal (binding_set, GDK_ISO_Enter, 0, "select-cursor-row", 1,
1201                                 G_TYPE_BOOLEAN, TRUE);
1202   gtk_binding_entry_add_signal (binding_set, GDK_KP_Enter, 0, "select-cursor-row", 1,
1203                                 G_TYPE_BOOLEAN, TRUE);
1204
1205   /* expand and collapse rows */
1206   gtk_binding_entry_add_signal (binding_set, GDK_plus, 0, "expand-collapse-cursor-row", 3,
1207                                 G_TYPE_BOOLEAN, TRUE,
1208                                 G_TYPE_BOOLEAN, TRUE,
1209                                 G_TYPE_BOOLEAN, FALSE);
1210
1211   gtk_binding_entry_add_signal (binding_set, GDK_asterisk, 0,
1212                                 "expand-collapse-cursor-row", 3,
1213                                 G_TYPE_BOOLEAN, TRUE,
1214                                 G_TYPE_BOOLEAN, TRUE,
1215                                 G_TYPE_BOOLEAN, TRUE);
1216   gtk_binding_entry_add_signal (binding_set, GDK_KP_Multiply, 0,
1217                                 "expand-collapse-cursor-row", 3,
1218                                 G_TYPE_BOOLEAN, TRUE,
1219                                 G_TYPE_BOOLEAN, TRUE,
1220                                 G_TYPE_BOOLEAN, TRUE);
1221
1222   gtk_binding_entry_add_signal (binding_set, GDK_slash, 0,
1223                                 "expand-collapse-cursor-row", 3,
1224                                 G_TYPE_BOOLEAN, TRUE,
1225                                 G_TYPE_BOOLEAN, FALSE,
1226                                 G_TYPE_BOOLEAN, FALSE);
1227   gtk_binding_entry_add_signal (binding_set, GDK_KP_Divide, 0,
1228                                 "expand-collapse-cursor-row", 3,
1229                                 G_TYPE_BOOLEAN, TRUE,
1230                                 G_TYPE_BOOLEAN, FALSE,
1231                                 G_TYPE_BOOLEAN, FALSE);
1232
1233   /* Not doable on US keyboards */
1234   gtk_binding_entry_add_signal (binding_set, GDK_plus, GDK_SHIFT_MASK, "expand-collapse-cursor-row", 3,
1235                                 G_TYPE_BOOLEAN, TRUE,
1236                                 G_TYPE_BOOLEAN, TRUE,
1237                                 G_TYPE_BOOLEAN, TRUE);
1238   gtk_binding_entry_add_signal (binding_set, GDK_KP_Add, 0, "expand-collapse-cursor-row", 3,
1239                                 G_TYPE_BOOLEAN, TRUE,
1240                                 G_TYPE_BOOLEAN, TRUE,
1241                                 G_TYPE_BOOLEAN, FALSE);
1242   gtk_binding_entry_add_signal (binding_set, GDK_KP_Add, GDK_SHIFT_MASK, "expand-collapse-cursor-row", 3,
1243                                 G_TYPE_BOOLEAN, TRUE,
1244                                 G_TYPE_BOOLEAN, TRUE,
1245                                 G_TYPE_BOOLEAN, TRUE);
1246   gtk_binding_entry_add_signal (binding_set, GDK_KP_Add, GDK_SHIFT_MASK, "expand-collapse-cursor-row", 3,
1247                                 G_TYPE_BOOLEAN, TRUE,
1248                                 G_TYPE_BOOLEAN, TRUE,
1249                                 G_TYPE_BOOLEAN, TRUE);
1250   gtk_binding_entry_add_signal (binding_set, GDK_Right, GDK_SHIFT_MASK,
1251                                 "expand-collapse-cursor-row", 3,
1252                                 G_TYPE_BOOLEAN, FALSE,
1253                                 G_TYPE_BOOLEAN, TRUE,
1254                                 G_TYPE_BOOLEAN, TRUE);
1255   gtk_binding_entry_add_signal (binding_set, GDK_KP_Right, 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_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   gtk_binding_entry_add_signal (binding_set, GDK_KP_Right,
1267                                 GDK_CONTROL_MASK | GDK_SHIFT_MASK,
1268                                 "expand-collapse-cursor-row", 3,
1269                                 G_TYPE_BOOLEAN, FALSE,
1270                                 G_TYPE_BOOLEAN, TRUE,
1271                                 G_TYPE_BOOLEAN, TRUE);
1272
1273   gtk_binding_entry_add_signal (binding_set, GDK_minus, 0, "expand-collapse-cursor-row", 3,
1274                                 G_TYPE_BOOLEAN, TRUE,
1275                                 G_TYPE_BOOLEAN, FALSE,
1276                                 G_TYPE_BOOLEAN, FALSE);
1277   gtk_binding_entry_add_signal (binding_set, GDK_minus, GDK_SHIFT_MASK, "expand-collapse-cursor-row", 3,
1278                                 G_TYPE_BOOLEAN, TRUE,
1279                                 G_TYPE_BOOLEAN, FALSE,
1280                                 G_TYPE_BOOLEAN, TRUE);
1281   gtk_binding_entry_add_signal (binding_set, GDK_KP_Subtract, 0, "expand-collapse-cursor-row", 3,
1282                                 G_TYPE_BOOLEAN, TRUE,
1283                                 G_TYPE_BOOLEAN, FALSE,
1284                                 G_TYPE_BOOLEAN, FALSE);
1285   gtk_binding_entry_add_signal (binding_set, GDK_KP_Subtract, GDK_SHIFT_MASK, "expand-collapse-cursor-row", 3,
1286                                 G_TYPE_BOOLEAN, TRUE,
1287                                 G_TYPE_BOOLEAN, FALSE,
1288                                 G_TYPE_BOOLEAN, TRUE);
1289   gtk_binding_entry_add_signal (binding_set, GDK_Left, GDK_SHIFT_MASK,
1290                                 "expand-collapse-cursor-row", 3,
1291                                 G_TYPE_BOOLEAN, FALSE,
1292                                 G_TYPE_BOOLEAN, FALSE,
1293                                 G_TYPE_BOOLEAN, TRUE);
1294   gtk_binding_entry_add_signal (binding_set, GDK_KP_Left, 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_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   gtk_binding_entry_add_signal (binding_set, GDK_KP_Left,
1306                                 GDK_CONTROL_MASK | GDK_SHIFT_MASK,
1307                                 "expand-collapse-cursor-row", 3,
1308                                 G_TYPE_BOOLEAN, FALSE,
1309                                 G_TYPE_BOOLEAN, FALSE,
1310                                 G_TYPE_BOOLEAN, TRUE);
1311
1312   gtk_binding_entry_add_signal (binding_set, GDK_BackSpace, 0, "select-cursor-parent", 0);
1313   gtk_binding_entry_add_signal (binding_set, GDK_BackSpace, GDK_CONTROL_MASK, "select-cursor-parent", 0);
1314
1315   gtk_binding_entry_add_signal (binding_set, GDK_f, GDK_CONTROL_MASK, "start-interactive-search", 0);
1316
1317   gtk_binding_entry_add_signal (binding_set, GDK_F, GDK_CONTROL_MASK, "start-interactive-search", 0);
1318
1319   g_type_class_add_private (o_class, sizeof (GtkTreeViewPrivate));
1320 }
1321
1322 static void
1323 gtk_tree_view_init (GtkTreeView *tree_view)
1324 {
1325   tree_view->priv = G_TYPE_INSTANCE_GET_PRIVATE (tree_view, GTK_TYPE_TREE_VIEW, GtkTreeViewPrivate);
1326
1327   gtk_widget_set_can_focus (GTK_WIDGET (tree_view), TRUE);
1328   gtk_widget_set_redraw_on_allocate (GTK_WIDGET (tree_view), FALSE);
1329
1330   tree_view->priv->flags =  GTK_TREE_VIEW_SHOW_EXPANDERS
1331                             | GTK_TREE_VIEW_DRAW_KEYFOCUS
1332                             | GTK_TREE_VIEW_HEADERS_VISIBLE;
1333
1334   /* We need some padding */
1335   tree_view->priv->dy = 0;
1336   tree_view->priv->cursor_offset = 0;
1337   tree_view->priv->n_columns = 0;
1338   tree_view->priv->header_height = 1;
1339   tree_view->priv->x_drag = 0;
1340   tree_view->priv->drag_pos = -1;
1341   tree_view->priv->header_has_focus = FALSE;
1342   tree_view->priv->pressed_button = -1;
1343   tree_view->priv->press_start_x = -1;
1344   tree_view->priv->press_start_y = -1;
1345   tree_view->priv->reorderable = FALSE;
1346   tree_view->priv->presize_handler_timer = 0;
1347   tree_view->priv->scroll_sync_timer = 0;
1348   tree_view->priv->fixed_height = -1;
1349   tree_view->priv->fixed_height_mode = FALSE;
1350   tree_view->priv->fixed_height_check = 0;
1351   gtk_tree_view_set_adjustments (tree_view, NULL, NULL);
1352   tree_view->priv->selection = _gtk_tree_selection_new_with_tree_view (tree_view);
1353   tree_view->priv->enable_search = TRUE;
1354   tree_view->priv->search_column = -1;
1355   tree_view->priv->search_position_func = gtk_tree_view_search_position_func;
1356   tree_view->priv->search_equal_func = gtk_tree_view_search_equal_func;
1357   tree_view->priv->search_custom_entry_set = FALSE;
1358   tree_view->priv->typeselect_flush_timeout = 0;
1359   tree_view->priv->init_hadjust_value = TRUE;
1360   tree_view->priv->width = 0;
1361
1362   tree_view->priv->hover_selection = FALSE;
1363   tree_view->priv->hover_expand = FALSE;
1364
1365   tree_view->priv->level_indentation = 0;
1366
1367   tree_view->priv->rubber_banding_enable = FALSE;
1368
1369   tree_view->priv->grid_lines = GTK_TREE_VIEW_GRID_LINES_NONE;
1370   tree_view->priv->tree_lines_enabled = FALSE;
1371
1372   tree_view->priv->tooltip_column = -1;
1373
1374   tree_view->priv->post_validation_flag = FALSE;
1375
1376   tree_view->priv->last_button_x = -1;
1377   tree_view->priv->last_button_y = -1;
1378
1379   tree_view->priv->event_last_x = -10000;
1380   tree_view->priv->event_last_y = -10000;
1381 }
1382
1383 \f
1384
1385 /* GObject Methods
1386  */
1387
1388 static void
1389 gtk_tree_view_set_property (GObject         *object,
1390                             guint            prop_id,
1391                             const GValue    *value,
1392                             GParamSpec      *pspec)
1393 {
1394   GtkTreeView *tree_view;
1395
1396   tree_view = GTK_TREE_VIEW (object);
1397
1398   switch (prop_id)
1399     {
1400     case PROP_MODEL:
1401       gtk_tree_view_set_model (tree_view, g_value_get_object (value));
1402       break;
1403     case PROP_HADJUSTMENT:
1404       gtk_tree_view_set_hadjustment (tree_view, g_value_get_object (value));
1405       break;
1406     case PROP_VADJUSTMENT:
1407       gtk_tree_view_set_vadjustment (tree_view, g_value_get_object (value));
1408       break;
1409     case PROP_HEADERS_VISIBLE:
1410       gtk_tree_view_set_headers_visible (tree_view, g_value_get_boolean (value));
1411       break;
1412     case PROP_HEADERS_CLICKABLE:
1413       gtk_tree_view_set_headers_clickable (tree_view, g_value_get_boolean (value));
1414       break;
1415     case PROP_EXPANDER_COLUMN:
1416       gtk_tree_view_set_expander_column (tree_view, g_value_get_object (value));
1417       break;
1418     case PROP_REORDERABLE:
1419       gtk_tree_view_set_reorderable (tree_view, g_value_get_boolean (value));
1420       break;
1421     case PROP_RULES_HINT:
1422       gtk_tree_view_set_rules_hint (tree_view, g_value_get_boolean (value));
1423       break;
1424     case PROP_ENABLE_SEARCH:
1425       gtk_tree_view_set_enable_search (tree_view, g_value_get_boolean (value));
1426       break;
1427     case PROP_SEARCH_COLUMN:
1428       gtk_tree_view_set_search_column (tree_view, g_value_get_int (value));
1429       break;
1430     case PROP_FIXED_HEIGHT_MODE:
1431       gtk_tree_view_set_fixed_height_mode (tree_view, g_value_get_boolean (value));
1432       break;
1433     case PROP_HOVER_SELECTION:
1434       tree_view->priv->hover_selection = g_value_get_boolean (value);
1435       break;
1436     case PROP_HOVER_EXPAND:
1437       tree_view->priv->hover_expand = g_value_get_boolean (value);
1438       break;
1439     case PROP_SHOW_EXPANDERS:
1440       gtk_tree_view_set_show_expanders (tree_view, g_value_get_boolean (value));
1441       break;
1442     case PROP_LEVEL_INDENTATION:
1443       tree_view->priv->level_indentation = g_value_get_int (value);
1444       break;
1445     case PROP_RUBBER_BANDING:
1446       tree_view->priv->rubber_banding_enable = g_value_get_boolean (value);
1447       break;
1448     case PROP_ENABLE_GRID_LINES:
1449       gtk_tree_view_set_grid_lines (tree_view, g_value_get_enum (value));
1450       break;
1451     case PROP_ENABLE_TREE_LINES:
1452       gtk_tree_view_set_enable_tree_lines (tree_view, g_value_get_boolean (value));
1453       break;
1454     case PROP_TOOLTIP_COLUMN:
1455       gtk_tree_view_set_tooltip_column (tree_view, g_value_get_int (value));
1456       break;
1457     default:
1458       G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
1459       break;
1460     }
1461 }
1462
1463 static void
1464 gtk_tree_view_get_property (GObject    *object,
1465                             guint       prop_id,
1466                             GValue     *value,
1467                             GParamSpec *pspec)
1468 {
1469   GtkTreeView *tree_view;
1470
1471   tree_view = GTK_TREE_VIEW (object);
1472
1473   switch (prop_id)
1474     {
1475     case PROP_MODEL:
1476       g_value_set_object (value, tree_view->priv->model);
1477       break;
1478     case PROP_HADJUSTMENT:
1479       g_value_set_object (value, tree_view->priv->hadjustment);
1480       break;
1481     case PROP_VADJUSTMENT:
1482       g_value_set_object (value, tree_view->priv->vadjustment);
1483       break;
1484     case PROP_HEADERS_VISIBLE:
1485       g_value_set_boolean (value, gtk_tree_view_get_headers_visible (tree_view));
1486       break;
1487     case PROP_HEADERS_CLICKABLE:
1488       g_value_set_boolean (value, gtk_tree_view_get_headers_clickable (tree_view));
1489       break;
1490     case PROP_EXPANDER_COLUMN:
1491       g_value_set_object (value, tree_view->priv->expander_column);
1492       break;
1493     case PROP_REORDERABLE:
1494       g_value_set_boolean (value, tree_view->priv->reorderable);
1495       break;
1496     case PROP_RULES_HINT:
1497       g_value_set_boolean (value, tree_view->priv->has_rules);
1498       break;
1499     case PROP_ENABLE_SEARCH:
1500       g_value_set_boolean (value, tree_view->priv->enable_search);
1501       break;
1502     case PROP_SEARCH_COLUMN:
1503       g_value_set_int (value, tree_view->priv->search_column);
1504       break;
1505     case PROP_FIXED_HEIGHT_MODE:
1506       g_value_set_boolean (value, tree_view->priv->fixed_height_mode);
1507       break;
1508     case PROP_HOVER_SELECTION:
1509       g_value_set_boolean (value, tree_view->priv->hover_selection);
1510       break;
1511     case PROP_HOVER_EXPAND:
1512       g_value_set_boolean (value, tree_view->priv->hover_expand);
1513       break;
1514     case PROP_SHOW_EXPANDERS:
1515       g_value_set_boolean (value, GTK_TREE_VIEW_FLAG_SET (tree_view, GTK_TREE_VIEW_SHOW_EXPANDERS));
1516       break;
1517     case PROP_LEVEL_INDENTATION:
1518       g_value_set_int (value, tree_view->priv->level_indentation);
1519       break;
1520     case PROP_RUBBER_BANDING:
1521       g_value_set_boolean (value, tree_view->priv->rubber_banding_enable);
1522       break;
1523     case PROP_ENABLE_GRID_LINES:
1524       g_value_set_enum (value, tree_view->priv->grid_lines);
1525       break;
1526     case PROP_ENABLE_TREE_LINES:
1527       g_value_set_boolean (value, tree_view->priv->tree_lines_enabled);
1528       break;
1529     case PROP_TOOLTIP_COLUMN:
1530       g_value_set_int (value, tree_view->priv->tooltip_column);
1531       break;
1532     default:
1533       G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
1534       break;
1535     }
1536 }
1537
1538 static void
1539 gtk_tree_view_finalize (GObject *object)
1540 {
1541   G_OBJECT_CLASS (gtk_tree_view_parent_class)->finalize (object);
1542 }
1543
1544
1545 static GtkBuildableIface *parent_buildable_iface;
1546
1547 static void
1548 gtk_tree_view_buildable_init (GtkBuildableIface *iface)
1549 {
1550   parent_buildable_iface = g_type_interface_peek_parent (iface);
1551   iface->add_child = gtk_tree_view_buildable_add_child;
1552   iface->get_internal_child = gtk_tree_view_buildable_get_internal_child;
1553 }
1554
1555 static void
1556 gtk_tree_view_buildable_add_child (GtkBuildable *tree_view,
1557                                    GtkBuilder  *builder,
1558                                    GObject     *child,
1559                                    const gchar *type)
1560 {
1561   gtk_tree_view_append_column (GTK_TREE_VIEW (tree_view), GTK_TREE_VIEW_COLUMN (child));
1562 }
1563
1564 static GObject *
1565 gtk_tree_view_buildable_get_internal_child (GtkBuildable      *buildable,
1566                                             GtkBuilder        *builder,
1567                                             const gchar       *childname)
1568 {
1569     if (strcmp (childname, "selection") == 0)
1570       return G_OBJECT (GTK_TREE_VIEW (buildable)->priv->selection);
1571
1572     return parent_buildable_iface->get_internal_child (buildable,
1573                                                        builder,
1574                                                        childname);
1575 }
1576
1577 /* GtkObject Methods
1578  */
1579
1580 static void
1581 gtk_tree_view_free_rbtree (GtkTreeView *tree_view)
1582 {
1583   _gtk_rbtree_free (tree_view->priv->tree);
1584
1585   tree_view->priv->tree = NULL;
1586   tree_view->priv->button_pressed_node = NULL;
1587   tree_view->priv->button_pressed_tree = NULL;
1588   tree_view->priv->prelight_tree = NULL;
1589   tree_view->priv->prelight_node = NULL;
1590   tree_view->priv->expanded_collapsed_node = NULL;
1591   tree_view->priv->expanded_collapsed_tree = NULL;
1592 }
1593
1594 static void
1595 gtk_tree_view_destroy (GtkObject *object)
1596 {
1597   GtkTreeView *tree_view = GTK_TREE_VIEW (object);
1598   GList *list;
1599
1600   gtk_tree_view_stop_editing (tree_view, TRUE);
1601
1602   if (tree_view->priv->columns != NULL)
1603     {
1604       list = tree_view->priv->columns;
1605       while (list)
1606         {
1607           GtkTreeViewColumn *column;
1608           column = GTK_TREE_VIEW_COLUMN (list->data);
1609           list = list->next;
1610           gtk_tree_view_remove_column (tree_view, column);
1611         }
1612       tree_view->priv->columns = NULL;
1613     }
1614
1615   if (tree_view->priv->tree != NULL)
1616     {
1617       gtk_tree_view_unref_and_check_selection_tree (tree_view, tree_view->priv->tree);
1618
1619       gtk_tree_view_free_rbtree (tree_view);
1620     }
1621
1622   if (tree_view->priv->selection != NULL)
1623     {
1624       _gtk_tree_selection_set_tree_view (tree_view->priv->selection, NULL);
1625       g_object_unref (tree_view->priv->selection);
1626       tree_view->priv->selection = NULL;
1627     }
1628
1629   if (tree_view->priv->scroll_to_path != NULL)
1630     {
1631       gtk_tree_row_reference_free (tree_view->priv->scroll_to_path);
1632       tree_view->priv->scroll_to_path = NULL;
1633     }
1634
1635   if (tree_view->priv->drag_dest_row != NULL)
1636     {
1637       gtk_tree_row_reference_free (tree_view->priv->drag_dest_row);
1638       tree_view->priv->drag_dest_row = NULL;
1639     }
1640
1641   if (tree_view->priv->top_row != NULL)
1642     {
1643       gtk_tree_row_reference_free (tree_view->priv->top_row);
1644       tree_view->priv->top_row = NULL;
1645     }
1646
1647   if (tree_view->priv->column_drop_func_data &&
1648       tree_view->priv->column_drop_func_data_destroy)
1649     {
1650       tree_view->priv->column_drop_func_data_destroy (tree_view->priv->column_drop_func_data);
1651       tree_view->priv->column_drop_func_data = NULL;
1652     }
1653
1654   if (tree_view->priv->destroy_count_destroy &&
1655       tree_view->priv->destroy_count_data)
1656     {
1657       tree_view->priv->destroy_count_destroy (tree_view->priv->destroy_count_data);
1658       tree_view->priv->destroy_count_data = NULL;
1659     }
1660
1661   gtk_tree_row_reference_free (tree_view->priv->cursor);
1662   tree_view->priv->cursor = NULL;
1663
1664   gtk_tree_row_reference_free (tree_view->priv->anchor);
1665   tree_view->priv->anchor = NULL;
1666
1667   /* destroy interactive search dialog */
1668   if (tree_view->priv->search_window)
1669     {
1670       gtk_widget_destroy (tree_view->priv->search_window);
1671       tree_view->priv->search_window = NULL;
1672       tree_view->priv->search_entry = NULL;
1673       if (tree_view->priv->typeselect_flush_timeout)
1674         {
1675           g_source_remove (tree_view->priv->typeselect_flush_timeout);
1676           tree_view->priv->typeselect_flush_timeout = 0;
1677         }
1678     }
1679
1680   if (tree_view->priv->search_destroy && tree_view->priv->search_user_data)
1681     {
1682       tree_view->priv->search_destroy (tree_view->priv->search_user_data);
1683       tree_view->priv->search_user_data = NULL;
1684     }
1685
1686   if (tree_view->priv->search_position_destroy && tree_view->priv->search_position_user_data)
1687     {
1688       tree_view->priv->search_position_destroy (tree_view->priv->search_position_user_data);
1689       tree_view->priv->search_position_user_data = NULL;
1690     }
1691
1692   if (tree_view->priv->row_separator_destroy && tree_view->priv->row_separator_data)
1693     {
1694       tree_view->priv->row_separator_destroy (tree_view->priv->row_separator_data);
1695       tree_view->priv->row_separator_data = NULL;
1696     }
1697
1698   gtk_tree_view_set_model (tree_view, NULL);
1699
1700   if (tree_view->priv->hadjustment)
1701     {
1702       g_object_unref (tree_view->priv->hadjustment);
1703       tree_view->priv->hadjustment = NULL;
1704     }
1705   if (tree_view->priv->vadjustment)
1706     {
1707       g_object_unref (tree_view->priv->vadjustment);
1708       tree_view->priv->vadjustment = NULL;
1709     }
1710
1711   GTK_OBJECT_CLASS (gtk_tree_view_parent_class)->destroy (object);
1712 }
1713
1714 \f
1715
1716 /* GtkWidget Methods
1717  */
1718
1719 /* GtkWidget::map helper */
1720 static void
1721 gtk_tree_view_map_buttons (GtkTreeView *tree_view)
1722 {
1723   GList *list;
1724
1725   g_return_if_fail (gtk_widget_get_mapped (GTK_WIDGET (tree_view)));
1726
1727   if (GTK_TREE_VIEW_FLAG_SET (tree_view, GTK_TREE_VIEW_HEADERS_VISIBLE))
1728     {
1729       GtkTreeViewColumn *column;
1730
1731       for (list = tree_view->priv->columns; list; list = list->next)
1732         {
1733           column = list->data;
1734           if (gtk_widget_get_visible (column->button) &&
1735               !gtk_widget_get_mapped (column->button))
1736             gtk_widget_map (column->button);
1737         }
1738       for (list = tree_view->priv->columns; list; list = list->next)
1739         {
1740           column = list->data;
1741           if (column->visible == FALSE)
1742             continue;
1743           if (column->resizable)
1744             {
1745               gdk_window_raise (column->window);
1746               gdk_window_show (column->window);
1747             }
1748           else
1749             gdk_window_hide (column->window);
1750         }
1751       gdk_window_show (tree_view->priv->header_window);
1752     }
1753 }
1754
1755 static void
1756 gtk_tree_view_map (GtkWidget *widget)
1757 {
1758   GtkTreeView *tree_view = GTK_TREE_VIEW (widget);
1759   GList *tmp_list;
1760
1761   gtk_widget_set_mapped (widget, TRUE);
1762
1763   tmp_list = tree_view->priv->children;
1764   while (tmp_list)
1765     {
1766       GtkTreeViewChild *child = tmp_list->data;
1767       tmp_list = tmp_list->next;
1768
1769       if (gtk_widget_get_visible (child->widget))
1770         {
1771           if (!gtk_widget_get_mapped (child->widget))
1772             gtk_widget_map (child->widget);
1773         }
1774     }
1775   gdk_window_show (tree_view->priv->bin_window);
1776
1777   gtk_tree_view_map_buttons (tree_view);
1778
1779   gdk_window_show (widget->window);
1780 }
1781
1782 static void
1783 gtk_tree_view_realize (GtkWidget *widget)
1784 {
1785   GtkTreeView *tree_view = GTK_TREE_VIEW (widget);
1786   GList *tmp_list;
1787   GdkWindowAttr attributes;
1788   gint attributes_mask;
1789
1790   gtk_widget_set_realized (widget, TRUE);
1791
1792   /* Make the main, clipping window */
1793   attributes.window_type = GDK_WINDOW_CHILD;
1794   attributes.x = widget->allocation.x;
1795   attributes.y = widget->allocation.y;
1796   attributes.width = widget->allocation.width;
1797   attributes.height = widget->allocation.height;
1798   attributes.wclass = GDK_INPUT_OUTPUT;
1799   attributes.visual = gtk_widget_get_visual (widget);
1800   attributes.colormap = gtk_widget_get_colormap (widget);
1801   attributes.event_mask = GDK_VISIBILITY_NOTIFY_MASK;
1802
1803   attributes_mask = GDK_WA_X | GDK_WA_Y | GDK_WA_VISUAL | GDK_WA_COLORMAP;
1804
1805   widget->window = gdk_window_new (gtk_widget_get_parent_window (widget),
1806                                    &attributes, attributes_mask);
1807   gdk_window_set_user_data (widget->window, widget);
1808
1809   /* Make the window for the tree */
1810   attributes.x = 0;
1811   attributes.y = TREE_VIEW_HEADER_HEIGHT (tree_view);
1812   attributes.width = MAX (tree_view->priv->width, widget->allocation.width);
1813   attributes.height = widget->allocation.height;
1814   attributes.event_mask = (GDK_EXPOSURE_MASK |
1815                            GDK_SCROLL_MASK |
1816                            GDK_POINTER_MOTION_MASK |
1817                            GDK_ENTER_NOTIFY_MASK |
1818                            GDK_LEAVE_NOTIFY_MASK |
1819                            GDK_BUTTON_PRESS_MASK |
1820                            GDK_BUTTON_RELEASE_MASK |
1821                            gtk_widget_get_events (widget));
1822
1823   tree_view->priv->bin_window = gdk_window_new (widget->window,
1824                                                 &attributes, attributes_mask);
1825   gdk_window_set_user_data (tree_view->priv->bin_window, widget);
1826
1827   /* Make the column header window */
1828   attributes.x = 0;
1829   attributes.y = 0;
1830   attributes.width = MAX (tree_view->priv->width, widget->allocation.width);
1831   attributes.height = tree_view->priv->header_height;
1832   attributes.event_mask = (GDK_EXPOSURE_MASK |
1833                            GDK_SCROLL_MASK |
1834                            GDK_ENTER_NOTIFY_MASK |
1835                            GDK_LEAVE_NOTIFY_MASK |
1836                            GDK_BUTTON_PRESS_MASK |
1837                            GDK_BUTTON_RELEASE_MASK |
1838                            GDK_KEY_PRESS_MASK |
1839                            GDK_KEY_RELEASE_MASK |
1840                            gtk_widget_get_events (widget));
1841
1842   tree_view->priv->header_window = gdk_window_new (widget->window,
1843                                                    &attributes, attributes_mask);
1844   gdk_window_set_user_data (tree_view->priv->header_window, widget);
1845
1846   /* Add them all up. */
1847   widget->style = gtk_style_attach (widget->style, widget->window);
1848   gdk_window_set_back_pixmap (widget->window, NULL, FALSE);
1849   gdk_window_set_background (tree_view->priv->bin_window, &widget->style->base[widget->state]);
1850   gtk_style_set_background (widget->style, tree_view->priv->header_window, GTK_STATE_NORMAL);
1851
1852   tmp_list = tree_view->priv->children;
1853   while (tmp_list)
1854     {
1855       GtkTreeViewChild *child = tmp_list->data;
1856       tmp_list = tmp_list->next;
1857
1858       gtk_widget_set_parent_window (child->widget, tree_view->priv->bin_window);
1859     }
1860
1861   for (tmp_list = tree_view->priv->columns; tmp_list; tmp_list = tmp_list->next)
1862     _gtk_tree_view_column_realize_button (GTK_TREE_VIEW_COLUMN (tmp_list->data));
1863
1864   /* Need to call those here, since they create GCs */
1865   gtk_tree_view_set_grid_lines (tree_view, tree_view->priv->grid_lines);
1866   gtk_tree_view_set_enable_tree_lines (tree_view, tree_view->priv->tree_lines_enabled);
1867
1868   install_presize_handler (tree_view);
1869 }
1870
1871 static void
1872 gtk_tree_view_unrealize (GtkWidget *widget)
1873 {
1874   GtkTreeView *tree_view = GTK_TREE_VIEW (widget);
1875   GtkTreeViewPrivate *priv = tree_view->priv;
1876   GList *list;
1877
1878   if (priv->scroll_timeout != 0)
1879     {
1880       g_source_remove (priv->scroll_timeout);
1881       priv->scroll_timeout = 0;
1882     }
1883
1884   if (priv->auto_expand_timeout != 0)
1885     {
1886       g_source_remove (priv->auto_expand_timeout);
1887       priv->auto_expand_timeout = 0;
1888     }
1889
1890   if (priv->open_dest_timeout != 0)
1891     {
1892       g_source_remove (priv->open_dest_timeout);
1893       priv->open_dest_timeout = 0;
1894     }
1895
1896   remove_expand_collapse_timeout (tree_view);
1897
1898   if (priv->presize_handler_timer != 0)
1899     {
1900       g_source_remove (priv->presize_handler_timer);
1901       priv->presize_handler_timer = 0;
1902     }
1903
1904   if (priv->validate_rows_timer != 0)
1905     {
1906       g_source_remove (priv->validate_rows_timer);
1907       priv->validate_rows_timer = 0;
1908     }
1909
1910   if (priv->scroll_sync_timer != 0)
1911     {
1912       g_source_remove (priv->scroll_sync_timer);
1913       priv->scroll_sync_timer = 0;
1914     }
1915
1916   if (priv->typeselect_flush_timeout)
1917     {
1918       g_source_remove (priv->typeselect_flush_timeout);
1919       priv->typeselect_flush_timeout = 0;
1920     }
1921
1922   for (list = priv->columns; list; list = list->next)
1923     _gtk_tree_view_column_unrealize_button (GTK_TREE_VIEW_COLUMN (list->data));
1924
1925   gdk_window_set_user_data (priv->bin_window, NULL);
1926   gdk_window_destroy (priv->bin_window);
1927   priv->bin_window = NULL;
1928
1929   gdk_window_set_user_data (priv->header_window, NULL);
1930   gdk_window_destroy (priv->header_window);
1931   priv->header_window = NULL;
1932
1933   if (priv->drag_window)
1934     {
1935       gdk_window_set_user_data (priv->drag_window, NULL);
1936       gdk_window_destroy (priv->drag_window);
1937       priv->drag_window = NULL;
1938     }
1939
1940   if (priv->drag_highlight_window)
1941     {
1942       gdk_window_set_user_data (priv->drag_highlight_window, NULL);
1943       gdk_window_destroy (priv->drag_highlight_window);
1944       priv->drag_highlight_window = NULL;
1945     }
1946
1947   GTK_WIDGET_CLASS (gtk_tree_view_parent_class)->unrealize (widget);
1948 }
1949
1950 /* GtkWidget::size_request helper */
1951 static void
1952 gtk_tree_view_size_request_columns (GtkTreeView *tree_view)
1953 {
1954   GList *list;
1955
1956   tree_view->priv->header_height = 0;
1957
1958   if (tree_view->priv->model)
1959     {
1960       for (list = tree_view->priv->columns; list; list = list->next)
1961         {
1962           GtkRequisition requisition;
1963           GtkTreeViewColumn *column = list->data;
1964
1965           if (column->button == NULL)
1966             continue;
1967
1968           column = list->data;
1969
1970           gtk_widget_size_request (column->button, &requisition);
1971           column->button_request = requisition.width;
1972           tree_view->priv->header_height = MAX (tree_view->priv->header_height, requisition.height);
1973         }
1974     }
1975 }
1976
1977
1978 /* Called only by ::size_request */
1979 static void
1980 gtk_tree_view_update_size (GtkTreeView *tree_view)
1981 {
1982   GList *list;
1983   GtkTreeViewColumn *column;
1984   gint i;
1985
1986   if (tree_view->priv->model == NULL)
1987     {
1988       tree_view->priv->width = 0;
1989       tree_view->priv->prev_width = 0;
1990       tree_view->priv->height = 0;
1991       return;
1992     }
1993
1994   tree_view->priv->prev_width = tree_view->priv->width;
1995   tree_view->priv->width = 0;
1996
1997   /* keep this in sync with size_allocate below */
1998   for (list = tree_view->priv->columns, i = 0; list; list = list->next, i++)
1999     {
2000       gint real_requested_width = 0;
2001       column = list->data;
2002       if (!column->visible)
2003         continue;
2004
2005       if (column->use_resized_width)
2006         {
2007           real_requested_width = column->resized_width;
2008         }
2009       else if (column->column_type == GTK_TREE_VIEW_COLUMN_FIXED)
2010         {
2011           real_requested_width = column->fixed_width;
2012         }
2013       else if (GTK_TREE_VIEW_FLAG_SET (tree_view, GTK_TREE_VIEW_HEADERS_VISIBLE))
2014         {
2015           real_requested_width = MAX (column->requested_width, column->button_request);
2016         }
2017       else
2018         {
2019           real_requested_width = column->requested_width;
2020         }
2021
2022       if (column->min_width != -1)
2023         real_requested_width = MAX (real_requested_width, column->min_width);
2024       if (column->max_width != -1)
2025         real_requested_width = MIN (real_requested_width, column->max_width);
2026
2027       tree_view->priv->width += real_requested_width;
2028     }
2029
2030   if (tree_view->priv->tree == NULL)
2031     tree_view->priv->height = 0;
2032   else
2033     tree_view->priv->height = tree_view->priv->tree->root->offset;
2034 }
2035
2036 static void
2037 gtk_tree_view_size_request (GtkWidget      *widget,
2038                             GtkRequisition *requisition)
2039 {
2040   GtkTreeView *tree_view = GTK_TREE_VIEW (widget);
2041   GList *tmp_list;
2042
2043   /* we validate some rows initially just to make sure we have some size.
2044    * In practice, with a lot of static lists, this should get a good width.
2045    */
2046   do_validate_rows (tree_view, FALSE);
2047   gtk_tree_view_size_request_columns (tree_view);
2048   gtk_tree_view_update_size (GTK_TREE_VIEW (widget));
2049
2050   requisition->width = tree_view->priv->width;
2051   requisition->height = tree_view->priv->height + TREE_VIEW_HEADER_HEIGHT (tree_view);
2052
2053   tmp_list = tree_view->priv->children;
2054
2055   while (tmp_list)
2056     {
2057       GtkTreeViewChild *child = tmp_list->data;
2058       GtkRequisition child_requisition;
2059
2060       tmp_list = tmp_list->next;
2061
2062       if (gtk_widget_get_visible (child->widget))
2063         gtk_widget_size_request (child->widget, &child_requisition);
2064     }
2065 }
2066
2067 static int
2068 gtk_tree_view_calculate_width_before_expander (GtkTreeView *tree_view)
2069 {
2070   int width = 0;
2071   GList *list;
2072   gboolean rtl;
2073
2074   rtl = (gtk_widget_get_direction (GTK_WIDGET (tree_view)) == GTK_TEXT_DIR_RTL);
2075   for (list = (rtl ? g_list_last (tree_view->priv->columns) : g_list_first (tree_view->priv->columns));
2076        list->data != tree_view->priv->expander_column;
2077        list = (rtl ? list->prev : list->next))
2078     {
2079       GtkTreeViewColumn *column = list->data;
2080
2081       width += column->width;
2082     }
2083
2084   return width;
2085 }
2086
2087 static void
2088 invalidate_column (GtkTreeView       *tree_view,
2089                    GtkTreeViewColumn *column)
2090 {
2091   gint column_offset = 0;
2092   GList *list;
2093   GtkWidget *widget = GTK_WIDGET (tree_view);
2094   gboolean rtl;
2095
2096   if (!gtk_widget_get_realized (widget))
2097     return;
2098
2099   rtl = (gtk_widget_get_direction (GTK_WIDGET (tree_view)) == GTK_TEXT_DIR_RTL);
2100   for (list = (rtl ? g_list_last (tree_view->priv->columns) : g_list_first (tree_view->priv->columns));
2101        list;
2102        list = (rtl ? list->prev : list->next))
2103     {
2104       GtkTreeViewColumn *tmpcolumn = list->data;
2105       if (tmpcolumn == column)
2106         {
2107           GdkRectangle invalid_rect;
2108
2109           invalid_rect.x = column_offset;
2110           invalid_rect.y = 0;
2111           invalid_rect.width = column->width;
2112           invalid_rect.height = widget->allocation.height;
2113
2114           gdk_window_invalidate_rect (widget->window, &invalid_rect, TRUE);
2115           break;
2116         }
2117
2118       column_offset += tmpcolumn->width;
2119     }
2120 }
2121
2122 static void
2123 invalidate_last_column (GtkTreeView *tree_view)
2124 {
2125   GList *last_column;
2126   gboolean rtl;
2127
2128   rtl = (gtk_widget_get_direction (GTK_WIDGET (tree_view)) == GTK_TEXT_DIR_RTL);
2129
2130   for (last_column = (rtl ? g_list_first (tree_view->priv->columns) : g_list_last (tree_view->priv->columns));
2131        last_column;
2132        last_column = (rtl ? last_column->next : last_column->prev))
2133     {
2134       if (GTK_TREE_VIEW_COLUMN (last_column->data)->visible)
2135         {
2136           invalidate_column (tree_view, last_column->data);
2137           return;
2138         }
2139     }
2140 }
2141
2142 static gint
2143 gtk_tree_view_get_real_requested_width_from_column (GtkTreeView       *tree_view,
2144                                                     GtkTreeViewColumn *column)
2145 {
2146   gint real_requested_width;
2147
2148   if (column->use_resized_width)
2149     {
2150       real_requested_width = column->resized_width;
2151     }
2152   else if (column->column_type == GTK_TREE_VIEW_COLUMN_FIXED)
2153     {
2154       real_requested_width = column->fixed_width;
2155     }
2156   else if (GTK_TREE_VIEW_FLAG_SET (tree_view, GTK_TREE_VIEW_HEADERS_VISIBLE))
2157     {
2158       real_requested_width = MAX (column->requested_width, column->button_request);
2159     }
2160   else
2161     {
2162       real_requested_width = column->requested_width;
2163       if (real_requested_width < 0)
2164         real_requested_width = 0;
2165     }
2166
2167   if (column->min_width != -1)
2168     real_requested_width = MAX (real_requested_width, column->min_width);
2169   if (column->max_width != -1)
2170     real_requested_width = MIN (real_requested_width, column->max_width);
2171
2172   return real_requested_width;
2173 }
2174
2175 /* GtkWidget::size_allocate helper */
2176 static void
2177 gtk_tree_view_size_allocate_columns (GtkWidget *widget,
2178                                      gboolean  *width_changed)
2179 {
2180   GtkTreeView *tree_view;
2181   GList *list, *first_column, *last_column;
2182   GtkTreeViewColumn *column;
2183   GtkAllocation allocation;
2184   gint width = 0;
2185   gint extra, extra_per_column, extra_for_last;
2186   gint full_requested_width = 0;
2187   gint number_of_expand_columns = 0;
2188   gboolean column_changed = FALSE;
2189   gboolean rtl;
2190   gboolean update_expand;
2191
2192   tree_view = GTK_TREE_VIEW (widget);
2193
2194   for (last_column = g_list_last (tree_view->priv->columns);
2195        last_column && !(GTK_TREE_VIEW_COLUMN (last_column->data)->visible);
2196        last_column = last_column->prev)
2197     ;
2198   if (last_column == NULL)
2199     return;
2200
2201   for (first_column = g_list_first (tree_view->priv->columns);
2202        first_column && !(GTK_TREE_VIEW_COLUMN (first_column->data)->visible);
2203        first_column = first_column->next)
2204     ;
2205
2206   allocation.y = 0;
2207   allocation.height = tree_view->priv->header_height;
2208
2209   rtl = (gtk_widget_get_direction (widget) == GTK_TEXT_DIR_RTL);
2210
2211   /* find out how many extra space and expandable columns we have */
2212   for (list = tree_view->priv->columns; list != last_column->next; list = list->next)
2213     {
2214       column = (GtkTreeViewColumn *)list->data;
2215
2216       if (!column->visible)
2217         continue;
2218
2219       full_requested_width += gtk_tree_view_get_real_requested_width_from_column (tree_view, column);
2220
2221       if (column->expand)
2222         number_of_expand_columns++;
2223     }
2224
2225   /* Only update the expand value if the width of the widget has changed,
2226    * or the number of expand columns has changed, or if there are no expand
2227    * columns, or if we didn't have an size-allocation yet after the
2228    * last validated node.
2229    */
2230   update_expand = (width_changed && *width_changed == TRUE)
2231       || number_of_expand_columns != tree_view->priv->last_number_of_expand_columns
2232       || number_of_expand_columns == 0
2233       || tree_view->priv->post_validation_flag == TRUE;
2234
2235   tree_view->priv->post_validation_flag = FALSE;
2236
2237   if (!update_expand)
2238     {
2239       extra = tree_view->priv->last_extra_space;
2240       extra_for_last = MAX (widget->allocation.width - full_requested_width - extra, 0);
2241     }
2242   else
2243     {
2244       extra = MAX (widget->allocation.width - full_requested_width, 0);
2245       extra_for_last = 0;
2246
2247       tree_view->priv->last_extra_space = extra;
2248     }
2249
2250   if (number_of_expand_columns > 0)
2251     extra_per_column = extra/number_of_expand_columns;
2252   else
2253     extra_per_column = 0;
2254
2255   if (update_expand)
2256     {
2257       tree_view->priv->last_extra_space_per_column = extra_per_column;
2258       tree_view->priv->last_number_of_expand_columns = number_of_expand_columns;
2259     }
2260
2261   for (list = (rtl ? last_column : first_column);
2262        list != (rtl ? first_column->prev : last_column->next);
2263        list = (rtl ? list->prev : list->next))
2264     {
2265       gint real_requested_width = 0;
2266       gint old_width;
2267
2268       column = list->data;
2269       old_width = column->width;
2270
2271       if (!column->visible)
2272         continue;
2273
2274       /* We need to handle the dragged button specially.
2275        */
2276       if (column == tree_view->priv->drag_column)
2277         {
2278           GtkAllocation drag_allocation;
2279           gdk_drawable_get_size (tree_view->priv->drag_window,
2280                                  &(drag_allocation.width),
2281                                  &(drag_allocation.height));
2282           drag_allocation.x = 0;
2283           drag_allocation.y = 0;
2284           gtk_widget_size_allocate (tree_view->priv->drag_column->button,
2285                                     &drag_allocation);
2286           width += drag_allocation.width;
2287           continue;
2288         }
2289
2290       real_requested_width = gtk_tree_view_get_real_requested_width_from_column (tree_view, column);
2291
2292       allocation.x = width;
2293       column->width = real_requested_width;
2294
2295       if (column->expand)
2296         {
2297           if (number_of_expand_columns == 1)
2298             {
2299               /* We add the remander to the last column as
2300                * */
2301               column->width += extra;
2302             }
2303           else
2304             {
2305               column->width += extra_per_column;
2306               extra -= extra_per_column;
2307               number_of_expand_columns --;
2308             }
2309         }
2310       else if (number_of_expand_columns == 0 &&
2311                list == last_column)
2312         {
2313           column->width += extra;
2314         }
2315
2316       /* In addition to expand, the last column can get even more
2317        * extra space so all available space is filled up.
2318        */
2319       if (extra_for_last > 0 && list == last_column)
2320         column->width += extra_for_last;
2321
2322       g_object_notify (G_OBJECT (column), "width");
2323
2324       allocation.width = column->width;
2325       width += column->width;
2326
2327       if (column->width > old_width)
2328         column_changed = TRUE;
2329
2330       gtk_widget_size_allocate (column->button, &allocation);
2331
2332       if (column->window)
2333         gdk_window_move_resize (column->window,
2334                                 allocation.x + (rtl ? 0 : allocation.width) - TREE_VIEW_DRAG_WIDTH/2,
2335                                 allocation.y,
2336                                 TREE_VIEW_DRAG_WIDTH, allocation.height);
2337     }
2338
2339   /* We change the width here.  The user might have been resizing columns,
2340    * so the total width of the tree view changes.
2341    */
2342   tree_view->priv->width = width;
2343   if (width_changed)
2344     *width_changed = TRUE;
2345
2346   if (column_changed)
2347     gtk_widget_queue_draw (GTK_WIDGET (tree_view));
2348 }
2349
2350
2351 static void
2352 gtk_tree_view_size_allocate (GtkWidget     *widget,
2353                              GtkAllocation *allocation)
2354 {
2355   GtkTreeView *tree_view = GTK_TREE_VIEW (widget);
2356   GList *tmp_list;
2357   gboolean width_changed = FALSE;
2358   gint old_width = widget->allocation.width;
2359
2360   if (allocation->width != widget->allocation.width)
2361     width_changed = TRUE;
2362
2363   widget->allocation = *allocation;
2364
2365   tmp_list = tree_view->priv->children;
2366
2367   while (tmp_list)
2368     {
2369       GtkAllocation allocation;
2370
2371       GtkTreeViewChild *child = tmp_list->data;
2372       tmp_list = tmp_list->next;
2373
2374       /* totally ignore our child's requisition */
2375       allocation.x = child->x;
2376       allocation.y = child->y;
2377       allocation.width = child->width;
2378       allocation.height = child->height;
2379       gtk_widget_size_allocate (child->widget, &allocation);
2380     }
2381
2382   /* We size-allocate the columns first because the width of the
2383    * tree view (used in updating the adjustments below) might change.
2384    */
2385   gtk_tree_view_size_allocate_columns (widget, &width_changed);
2386
2387   tree_view->priv->hadjustment->page_size = allocation->width;
2388   tree_view->priv->hadjustment->page_increment = allocation->width * 0.9;
2389   tree_view->priv->hadjustment->step_increment = allocation->width * 0.1;
2390   tree_view->priv->hadjustment->lower = 0;
2391   tree_view->priv->hadjustment->upper = MAX (tree_view->priv->hadjustment->page_size, tree_view->priv->width);
2392
2393   if (gtk_widget_get_direction(widget) == GTK_TEXT_DIR_RTL)
2394     {
2395       if (allocation->width < tree_view->priv->width)
2396         {
2397           if (tree_view->priv->init_hadjust_value)
2398             {
2399               tree_view->priv->hadjustment->value = MAX (tree_view->priv->width - allocation->width, 0);
2400               tree_view->priv->init_hadjust_value = FALSE;
2401             }
2402           else if (allocation->width != old_width)
2403             {
2404               tree_view->priv->hadjustment->value = CLAMP (tree_view->priv->hadjustment->value - allocation->width + old_width, 0, tree_view->priv->width - allocation->width);
2405             }
2406           else
2407             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);
2408         }
2409       else
2410         {
2411           tree_view->priv->hadjustment->value = 0;
2412           tree_view->priv->init_hadjust_value = TRUE;
2413         }
2414     }
2415   else
2416     if (tree_view->priv->hadjustment->value + allocation->width > tree_view->priv->width)
2417       tree_view->priv->hadjustment->value = MAX (tree_view->priv->width - allocation->width, 0);
2418
2419   gtk_adjustment_changed (tree_view->priv->hadjustment);
2420
2421   tree_view->priv->vadjustment->page_size = allocation->height - TREE_VIEW_HEADER_HEIGHT (tree_view);
2422   tree_view->priv->vadjustment->step_increment = tree_view->priv->vadjustment->page_size * 0.1;
2423   tree_view->priv->vadjustment->page_increment = tree_view->priv->vadjustment->page_size * 0.9;
2424   tree_view->priv->vadjustment->lower = 0;
2425   tree_view->priv->vadjustment->upper = MAX (tree_view->priv->vadjustment->page_size, tree_view->priv->height);
2426
2427   gtk_adjustment_changed (tree_view->priv->vadjustment);
2428
2429   /* now the adjustments and window sizes are in sync, we can sync toprow/dy again */
2430   if (tree_view->priv->height <= tree_view->priv->vadjustment->page_size)
2431     gtk_adjustment_set_value (GTK_ADJUSTMENT (tree_view->priv->vadjustment), 0);
2432   else if (tree_view->priv->vadjustment->value + tree_view->priv->vadjustment->page_size > tree_view->priv->height)
2433     gtk_adjustment_set_value (GTK_ADJUSTMENT (tree_view->priv->vadjustment),
2434                               tree_view->priv->height - tree_view->priv->vadjustment->page_size);
2435   else if (gtk_tree_row_reference_valid (tree_view->priv->top_row))
2436     gtk_tree_view_top_row_to_dy (tree_view);
2437   else
2438     gtk_tree_view_dy_to_top_row (tree_view);
2439
2440   if (gtk_widget_get_realized (widget))
2441     {
2442       gdk_window_move_resize (widget->window,
2443                               allocation->x, allocation->y,
2444                               allocation->width, allocation->height);
2445       gdk_window_move_resize (tree_view->priv->header_window,
2446                               - (gint) tree_view->priv->hadjustment->value,
2447                               0,
2448                               MAX (tree_view->priv->width, allocation->width),
2449                               tree_view->priv->header_height);
2450       gdk_window_move_resize (tree_view->priv->bin_window,
2451                               - (gint) tree_view->priv->hadjustment->value,
2452                               TREE_VIEW_HEADER_HEIGHT (tree_view),
2453                               MAX (tree_view->priv->width, allocation->width),
2454                               allocation->height - TREE_VIEW_HEADER_HEIGHT (tree_view));
2455     }
2456
2457   if (tree_view->priv->tree == NULL)
2458     invalidate_empty_focus (tree_view);
2459
2460   if (gtk_widget_get_realized (widget))
2461     {
2462       gboolean has_expand_column = FALSE;
2463       for (tmp_list = tree_view->priv->columns; tmp_list; tmp_list = tmp_list->next)
2464         {
2465           if (gtk_tree_view_column_get_expand (GTK_TREE_VIEW_COLUMN (tmp_list->data)))
2466             {
2467               has_expand_column = TRUE;
2468               break;
2469             }
2470         }
2471
2472       if (width_changed && tree_view->priv->expander_column)
2473         {
2474           /* Might seem awkward, but is the best heuristic I could come up
2475            * with.  Only if the width of the columns before the expander
2476            * changes, we will update the prelight status.  It is this
2477            * width that makes the expander move vertically.  Always updating
2478            * prelight status causes trouble with hover selections.
2479            */
2480           gint width_before_expander;
2481
2482           width_before_expander = gtk_tree_view_calculate_width_before_expander (tree_view);
2483
2484           if (tree_view->priv->prev_width_before_expander
2485               != width_before_expander)
2486               update_prelight (tree_view,
2487                                tree_view->priv->event_last_x,
2488                                tree_view->priv->event_last_y);
2489
2490           tree_view->priv->prev_width_before_expander = width_before_expander;
2491         }
2492
2493       /* This little hack only works if we have an LTR locale, and no column has the  */
2494       if (width_changed)
2495         {
2496           if (gtk_widget_get_direction (GTK_WIDGET (tree_view)) == GTK_TEXT_DIR_LTR &&
2497               ! has_expand_column)
2498             invalidate_last_column (tree_view);
2499           else
2500             gtk_widget_queue_draw (widget);
2501         }
2502     }
2503 }
2504
2505 /* Grabs the focus and unsets the GTK_TREE_VIEW_DRAW_KEYFOCUS flag */
2506 static void
2507 grab_focus_and_unset_draw_keyfocus (GtkTreeView *tree_view)
2508 {
2509   GtkWidget *widget = GTK_WIDGET (tree_view);
2510
2511   if (gtk_widget_get_can_focus (widget) && !gtk_widget_has_focus (widget))
2512     gtk_widget_grab_focus (widget);
2513   GTK_TREE_VIEW_UNSET_FLAG (tree_view, GTK_TREE_VIEW_DRAW_KEYFOCUS);
2514 }
2515
2516 static inline gboolean
2517 row_is_separator (GtkTreeView *tree_view,
2518                   GtkTreeIter *iter,
2519                   GtkTreePath *path)
2520 {
2521   gboolean is_separator = FALSE;
2522
2523   if (tree_view->priv->row_separator_func)
2524     {
2525       GtkTreeIter tmpiter;
2526
2527       if (iter)
2528         tmpiter = *iter;
2529       else
2530         gtk_tree_model_get_iter (tree_view->priv->model, &tmpiter, path);
2531
2532       is_separator = tree_view->priv->row_separator_func (tree_view->priv->model,
2533                                                           &tmpiter,
2534                                                           tree_view->priv->row_separator_data);
2535     }
2536
2537   return is_separator;
2538 }
2539
2540 static gboolean
2541 gtk_tree_view_button_press (GtkWidget      *widget,
2542                             GdkEventButton *event)
2543 {
2544   GtkTreeView *tree_view = GTK_TREE_VIEW (widget);
2545   GList *list;
2546   GtkTreeViewColumn *column = NULL;
2547   gint i;
2548   GdkRectangle background_area;
2549   GdkRectangle cell_area;
2550   gint vertical_separator;
2551   gint horizontal_separator;
2552   gboolean path_is_selectable;
2553   gboolean rtl;
2554
2555   rtl = (gtk_widget_get_direction (widget) == GTK_TEXT_DIR_RTL);
2556   gtk_tree_view_stop_editing (tree_view, FALSE);
2557   gtk_widget_style_get (widget,
2558                         "vertical-separator", &vertical_separator,
2559                         "horizontal-separator", &horizontal_separator,
2560                         NULL);
2561
2562
2563   /* Because grab_focus can cause reentrancy, we delay grab_focus until after
2564    * we're done handling the button press.
2565    */
2566
2567   if (event->window == tree_view->priv->bin_window)
2568     {
2569       GtkRBNode *node;
2570       GtkRBTree *tree;
2571       GtkTreePath *path;
2572       gchar *path_string;
2573       gint depth;
2574       gint new_y;
2575       gint y_offset;
2576       gint dval;
2577       gint pre_val, aft_val;
2578       GtkTreeViewColumn *column = NULL;
2579       GtkCellRenderer *focus_cell = NULL;
2580       gint column_handled_click = FALSE;
2581       gboolean row_double_click = FALSE;
2582       gboolean rtl;
2583       gboolean node_selected;
2584
2585       /* Empty tree? */
2586       if (tree_view->priv->tree == NULL)
2587         {
2588           grab_focus_and_unset_draw_keyfocus (tree_view);
2589           return TRUE;
2590         }
2591
2592       /* are we in an arrow? */
2593       if (tree_view->priv->prelight_node &&
2594           GTK_TREE_VIEW_FLAG_SET (tree_view, GTK_TREE_VIEW_ARROW_PRELIT) &&
2595           TREE_VIEW_DRAW_EXPANDERS (tree_view))
2596         {
2597           if (event->button == 1)
2598             {
2599               gtk_grab_add (widget);
2600               tree_view->priv->button_pressed_node = tree_view->priv->prelight_node;
2601               tree_view->priv->button_pressed_tree = tree_view->priv->prelight_tree;
2602               gtk_tree_view_draw_arrow (GTK_TREE_VIEW (widget),
2603                                         tree_view->priv->prelight_tree,
2604                                         tree_view->priv->prelight_node,
2605                                         event->x,
2606                                         event->y);
2607             }
2608
2609           grab_focus_and_unset_draw_keyfocus (tree_view);
2610           return TRUE;
2611         }
2612
2613       /* find the node that was clicked */
2614       new_y = TREE_WINDOW_Y_TO_RBTREE_Y(tree_view, event->y);
2615       if (new_y < 0)
2616         new_y = 0;
2617       y_offset = -_gtk_rbtree_find_offset (tree_view->priv->tree, new_y, &tree, &node);
2618
2619       if (node == NULL)
2620         {
2621           /* We clicked in dead space */
2622           grab_focus_and_unset_draw_keyfocus (tree_view);
2623           return TRUE;
2624         }
2625
2626       /* Get the path and the node */
2627       path = _gtk_tree_view_find_path (tree_view, tree, node);
2628       path_is_selectable = !row_is_separator (tree_view, NULL, path);
2629
2630       if (!path_is_selectable)
2631         {
2632           gtk_tree_path_free (path);
2633           grab_focus_and_unset_draw_keyfocus (tree_view);
2634           return TRUE;
2635         }
2636
2637       depth = gtk_tree_path_get_depth (path);
2638       background_area.y = y_offset + event->y;
2639       background_area.height = ROW_HEIGHT (tree_view, GTK_RBNODE_GET_HEIGHT (node));
2640       background_area.x = 0;
2641
2642
2643       /* Let the column have a chance at selecting it. */
2644       rtl = (gtk_widget_get_direction (GTK_WIDGET (tree_view)) == GTK_TEXT_DIR_RTL);
2645       for (list = (rtl ? g_list_last (tree_view->priv->columns) : g_list_first (tree_view->priv->columns));
2646            list; list = (rtl ? list->prev : list->next))
2647         {
2648           GtkTreeViewColumn *candidate = list->data;
2649
2650           if (!candidate->visible)
2651             continue;
2652
2653           background_area.width = candidate->width;
2654           if ((background_area.x > (gint) event->x) ||
2655               (background_area.x + background_area.width <= (gint) event->x))
2656             {
2657               background_area.x += background_area.width;
2658               continue;
2659             }
2660
2661           /* we found the focus column */
2662           column = candidate;
2663           cell_area = background_area;
2664           cell_area.width -= horizontal_separator;
2665           cell_area.height -= vertical_separator;
2666           cell_area.x += horizontal_separator/2;
2667           cell_area.y += vertical_separator/2;
2668           if (gtk_tree_view_is_expander_column (tree_view, column))
2669             {
2670               if (!rtl)
2671                 cell_area.x += (depth - 1) * tree_view->priv->level_indentation;
2672               cell_area.width -= (depth - 1) * tree_view->priv->level_indentation;
2673
2674               if (TREE_VIEW_DRAW_EXPANDERS (tree_view))
2675                 {
2676                   if (!rtl)
2677                     cell_area.x += depth * tree_view->priv->expander_size;
2678                   cell_area.width -= depth * tree_view->priv->expander_size;
2679                 }
2680             }
2681           break;
2682         }
2683
2684       if (column == NULL)
2685         {
2686           gtk_tree_path_free (path);
2687           grab_focus_and_unset_draw_keyfocus (tree_view);
2688           return FALSE;
2689         }
2690
2691       tree_view->priv->focus_column = column;
2692
2693       /* decide if we edit */
2694       if (event->type == GDK_BUTTON_PRESS && event->button == 1 &&
2695           !(event->state & gtk_accelerator_get_default_mod_mask ()))
2696         {
2697           GtkTreePath *anchor;
2698           GtkTreeIter iter;
2699
2700           gtk_tree_model_get_iter (tree_view->priv->model, &iter, path);
2701           gtk_tree_view_column_cell_set_cell_data (column,
2702                                                    tree_view->priv->model,
2703                                                    &iter,
2704                                                    GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_PARENT),
2705                                                    node->children?TRUE:FALSE);
2706
2707           if (tree_view->priv->anchor)
2708             anchor = gtk_tree_row_reference_get_path (tree_view->priv->anchor);
2709           else
2710             anchor = NULL;
2711
2712           if ((anchor && !gtk_tree_path_compare (anchor, path))
2713               || !_gtk_tree_view_column_has_editable_cell (column))
2714             {
2715               GtkCellEditable *cell_editable = NULL;
2716
2717               /* FIXME: get the right flags */
2718               guint flags = 0;
2719
2720               path_string = gtk_tree_path_to_string (path);
2721
2722               if (_gtk_tree_view_column_cell_event (column,
2723                                                     &cell_editable,
2724                                                     (GdkEvent *)event,
2725                                                     path_string,
2726                                                     &background_area,
2727                                                     &cell_area, flags))
2728                 {
2729                   if (cell_editable != NULL)
2730                     {
2731                       gint left, right;
2732                       GdkRectangle area;
2733
2734                       area = cell_area;
2735                       _gtk_tree_view_column_get_neighbor_sizes (column, _gtk_tree_view_column_get_edited_cell (column), &left, &right);
2736
2737                       area.x += left;
2738                       area.width -= right + left;
2739
2740                       gtk_tree_view_real_start_editing (tree_view,
2741                                                         column,
2742                                                         path,
2743                                                         cell_editable,
2744                                                         &area,
2745                                                         (GdkEvent *)event,
2746                                                         flags);
2747                       g_free (path_string);
2748                       gtk_tree_path_free (path);
2749                       gtk_tree_path_free (anchor);
2750                       return TRUE;
2751                     }
2752                   column_handled_click = TRUE;
2753                 }
2754               g_free (path_string);
2755             }
2756           if (anchor)
2757             gtk_tree_path_free (anchor);
2758         }
2759
2760       /* select */
2761       node_selected = GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_SELECTED);
2762       pre_val = tree_view->priv->vadjustment->value;
2763
2764       /* we only handle selection modifications on the first button press
2765        */
2766       if (event->type == GDK_BUTTON_PRESS)
2767         {
2768           if ((event->state & GDK_CONTROL_MASK) == GDK_CONTROL_MASK)
2769             tree_view->priv->ctrl_pressed = TRUE;
2770           if ((event->state & GDK_SHIFT_MASK) == GDK_SHIFT_MASK)
2771             tree_view->priv->shift_pressed = TRUE;
2772
2773           focus_cell = _gtk_tree_view_column_get_cell_at_pos (column, event->x - background_area.x);
2774           if (focus_cell)
2775             gtk_tree_view_column_focus_cell (column, focus_cell);
2776
2777           if (event->state & GDK_CONTROL_MASK)
2778             {
2779               gtk_tree_view_real_set_cursor (tree_view, path, FALSE, TRUE);
2780               gtk_tree_view_real_toggle_cursor_row (tree_view);
2781             }
2782           else if (event->state & GDK_SHIFT_MASK)
2783             {
2784               gtk_tree_view_real_set_cursor (tree_view, path, FALSE, TRUE);
2785               gtk_tree_view_real_select_cursor_row (tree_view, FALSE);
2786             }
2787           else
2788             {
2789               gtk_tree_view_real_set_cursor (tree_view, path, TRUE, TRUE);
2790             }
2791
2792           tree_view->priv->ctrl_pressed = FALSE;
2793           tree_view->priv->shift_pressed = FALSE;
2794         }
2795
2796       /* the treeview may have been scrolled because of _set_cursor,
2797        * correct here
2798        */
2799
2800       aft_val = tree_view->priv->vadjustment->value;
2801       dval = pre_val - aft_val;
2802
2803       cell_area.y += dval;
2804       background_area.y += dval;
2805
2806       /* Save press to possibly begin a drag
2807        */
2808       if (!column_handled_click &&
2809           !tree_view->priv->in_grab &&
2810           tree_view->priv->pressed_button < 0)
2811         {
2812           tree_view->priv->pressed_button = event->button;
2813           tree_view->priv->press_start_x = event->x;
2814           tree_view->priv->press_start_y = event->y;
2815
2816           if (tree_view->priv->rubber_banding_enable
2817               && !node_selected
2818               && tree_view->priv->selection->type == GTK_SELECTION_MULTIPLE)
2819             {
2820               tree_view->priv->press_start_y += tree_view->priv->dy;
2821               tree_view->priv->rubber_band_x = event->x;
2822               tree_view->priv->rubber_band_y = event->y + tree_view->priv->dy;
2823               tree_view->priv->rubber_band_status = RUBBER_BAND_MAYBE_START;
2824
2825               if ((event->state & GDK_CONTROL_MASK) == GDK_CONTROL_MASK)
2826                 tree_view->priv->rubber_band_ctrl = TRUE;
2827               if ((event->state & GDK_SHIFT_MASK) == GDK_SHIFT_MASK)
2828                 tree_view->priv->rubber_band_shift = TRUE;
2829             }
2830         }
2831
2832       /* Test if a double click happened on the same row. */
2833       if (event->button == 1 && event->type == GDK_BUTTON_PRESS)
2834         {
2835           int double_click_time, double_click_distance;
2836
2837           g_object_get (gtk_settings_get_default (),
2838                         "gtk-double-click-time", &double_click_time,
2839                         "gtk-double-click-distance", &double_click_distance,
2840                         NULL);
2841
2842           /* Same conditions as _gdk_event_button_generate */
2843           if (tree_view->priv->last_button_x != -1 &&
2844               (event->time < tree_view->priv->last_button_time + double_click_time) &&
2845               (ABS (event->x - tree_view->priv->last_button_x) <= double_click_distance) &&
2846               (ABS (event->y - tree_view->priv->last_button_y) <= double_click_distance))
2847             {
2848               /* We do no longer compare paths of this row and the
2849                * row clicked previously.  We use the double click
2850                * distance to decide whether this is a valid click,
2851                * allowing the mouse to slightly move over another row.
2852                */
2853               row_double_click = TRUE;
2854
2855               tree_view->priv->last_button_time = 0;
2856               tree_view->priv->last_button_x = -1;
2857               tree_view->priv->last_button_y = -1;
2858             }
2859           else
2860             {
2861               tree_view->priv->last_button_time = event->time;
2862               tree_view->priv->last_button_x = event->x;
2863               tree_view->priv->last_button_y = event->y;
2864             }
2865         }
2866
2867       if (row_double_click)
2868         {
2869           gtk_grab_remove (widget);
2870           gtk_tree_view_row_activated (tree_view, path, column);
2871
2872           if (tree_view->priv->pressed_button == event->button)
2873             tree_view->priv->pressed_button = -1;
2874         }
2875
2876       gtk_tree_path_free (path);
2877
2878       /* If we activated the row through a double click we don't want to grab
2879        * focus back, as moving focus to another widget is pretty common.
2880        */
2881       if (!row_double_click)
2882         grab_focus_and_unset_draw_keyfocus (tree_view);
2883
2884       return TRUE;
2885     }
2886
2887   /* We didn't click in the window.  Let's check to see if we clicked on a column resize window.
2888    */
2889   for (i = 0, list = tree_view->priv->columns; list; list = list->next, i++)
2890     {
2891       column = list->data;
2892       if (event->window == column->window &&
2893           column->resizable &&
2894           column->window)
2895         {
2896           gpointer drag_data;
2897
2898           if (event->type == GDK_2BUTTON_PRESS &&
2899               gtk_tree_view_column_get_sizing (column) != GTK_TREE_VIEW_COLUMN_AUTOSIZE)
2900             {
2901               column->use_resized_width = FALSE;
2902               _gtk_tree_view_column_autosize (tree_view, column);
2903               return TRUE;
2904             }
2905
2906           if (gdk_pointer_grab (column->window, FALSE,
2907                                 GDK_POINTER_MOTION_HINT_MASK |
2908                                 GDK_BUTTON1_MOTION_MASK |
2909                                 GDK_BUTTON_RELEASE_MASK,
2910                                 NULL, NULL, event->time))
2911             return FALSE;
2912
2913           gtk_grab_add (widget);
2914           GTK_TREE_VIEW_SET_FLAG (tree_view, GTK_TREE_VIEW_IN_COLUMN_RESIZE);
2915           column->resized_width = column->width - tree_view->priv->last_extra_space_per_column;
2916
2917           /* block attached dnd signal handler */
2918           drag_data = g_object_get_data (G_OBJECT (widget), "gtk-site-data");
2919           if (drag_data)
2920             g_signal_handlers_block_matched (widget,
2921                                              G_SIGNAL_MATCH_DATA,
2922                                              0, 0, NULL, NULL,
2923                                              drag_data);
2924
2925           tree_view->priv->drag_pos = i;
2926           tree_view->priv->x_drag = column->button->allocation.x + (rtl ? 0 : column->button->allocation.width);
2927
2928           if (!gtk_widget_has_focus (widget))
2929             gtk_widget_grab_focus (widget);
2930
2931           return TRUE;
2932         }
2933     }
2934   return FALSE;
2935 }
2936
2937 /* GtkWidget::button_release_event helper */
2938 static gboolean
2939 gtk_tree_view_button_release_drag_column (GtkWidget      *widget,
2940                                           GdkEventButton *event)
2941 {
2942   GtkTreeView *tree_view;
2943   GList *l;
2944   gboolean rtl;
2945
2946   tree_view = GTK_TREE_VIEW (widget);
2947
2948   rtl = (gtk_widget_get_direction (widget) == GTK_TEXT_DIR_RTL);
2949   gdk_display_pointer_ungrab (gtk_widget_get_display (widget), GDK_CURRENT_TIME);
2950   gdk_display_keyboard_ungrab (gtk_widget_get_display (widget), GDK_CURRENT_TIME);
2951
2952   /* Move the button back */
2953   g_object_ref (tree_view->priv->drag_column->button);
2954   gtk_container_remove (GTK_CONTAINER (tree_view), tree_view->priv->drag_column->button);
2955   gtk_widget_set_parent_window (tree_view->priv->drag_column->button, tree_view->priv->header_window);
2956   gtk_widget_set_parent (tree_view->priv->drag_column->button, GTK_WIDGET (tree_view));
2957   g_object_unref (tree_view->priv->drag_column->button);
2958   gtk_widget_queue_resize (widget);
2959   if (tree_view->priv->drag_column->resizable)
2960     {
2961       gdk_window_raise (tree_view->priv->drag_column->window);
2962       gdk_window_show (tree_view->priv->drag_column->window);
2963     }
2964   else
2965     gdk_window_hide (tree_view->priv->drag_column->window);
2966
2967   gtk_widget_grab_focus (tree_view->priv->drag_column->button);
2968
2969   if (rtl)
2970     {
2971       if (tree_view->priv->cur_reorder &&
2972           tree_view->priv->cur_reorder->right_column != tree_view->priv->drag_column)
2973         gtk_tree_view_move_column_after (tree_view, tree_view->priv->drag_column,
2974                                          tree_view->priv->cur_reorder->right_column);
2975     }
2976   else
2977     {
2978       if (tree_view->priv->cur_reorder &&
2979           tree_view->priv->cur_reorder->left_column != tree_view->priv->drag_column)
2980         gtk_tree_view_move_column_after (tree_view, tree_view->priv->drag_column,
2981                                          tree_view->priv->cur_reorder->left_column);
2982     }
2983   tree_view->priv->drag_column = NULL;
2984   gdk_window_hide (tree_view->priv->drag_window);
2985
2986   for (l = tree_view->priv->column_drag_info; l != NULL; l = l->next)
2987     g_slice_free (GtkTreeViewColumnReorder, l->data);
2988   g_list_free (tree_view->priv->column_drag_info);
2989   tree_view->priv->column_drag_info = NULL;
2990   tree_view->priv->cur_reorder = NULL;
2991
2992   if (tree_view->priv->drag_highlight_window)
2993     gdk_window_hide (tree_view->priv->drag_highlight_window);
2994
2995   /* Reset our flags */
2996   tree_view->priv->drag_column_window_state = DRAG_COLUMN_WINDOW_STATE_UNSET;
2997   GTK_TREE_VIEW_UNSET_FLAG (tree_view, GTK_TREE_VIEW_IN_COLUMN_DRAG);
2998
2999   return TRUE;
3000 }
3001
3002 /* GtkWidget::button_release_event helper */
3003 static gboolean
3004 gtk_tree_view_button_release_column_resize (GtkWidget      *widget,
3005                                             GdkEventButton *event)
3006 {
3007   GtkTreeView *tree_view;
3008   gpointer drag_data;
3009
3010   tree_view = GTK_TREE_VIEW (widget);
3011
3012   tree_view->priv->drag_pos = -1;
3013
3014   /* unblock attached dnd signal handler */
3015   drag_data = g_object_get_data (G_OBJECT (widget), "gtk-site-data");
3016   if (drag_data)
3017     g_signal_handlers_unblock_matched (widget,
3018                                        G_SIGNAL_MATCH_DATA,
3019                                        0, 0, NULL, NULL,
3020                                        drag_data);
3021
3022   GTK_TREE_VIEW_UNSET_FLAG (tree_view, GTK_TREE_VIEW_IN_COLUMN_RESIZE);
3023   gtk_grab_remove (widget);
3024   gdk_display_pointer_ungrab (gdk_drawable_get_display (event->window),
3025                               event->time);
3026   return TRUE;
3027 }
3028
3029 static gboolean
3030 gtk_tree_view_button_release (GtkWidget      *widget,
3031                               GdkEventButton *event)
3032 {
3033   GtkTreeView *tree_view = GTK_TREE_VIEW (widget);
3034
3035   if (GTK_TREE_VIEW_FLAG_SET (tree_view, GTK_TREE_VIEW_IN_COLUMN_DRAG))
3036     return gtk_tree_view_button_release_drag_column (widget, event);
3037
3038   if (tree_view->priv->rubber_band_status)
3039     gtk_tree_view_stop_rubber_band (tree_view);
3040
3041   if (tree_view->priv->pressed_button == event->button)
3042     tree_view->priv->pressed_button = -1;
3043
3044   if (GTK_TREE_VIEW_FLAG_SET (tree_view, GTK_TREE_VIEW_IN_COLUMN_RESIZE))
3045     return gtk_tree_view_button_release_column_resize (widget, event);
3046
3047   if (tree_view->priv->button_pressed_node == NULL)
3048     return FALSE;
3049
3050   if (event->button == 1)
3051     {
3052       gtk_grab_remove (widget);
3053       if (tree_view->priv->button_pressed_node == tree_view->priv->prelight_node &&
3054           GTK_TREE_VIEW_FLAG_SET (tree_view, GTK_TREE_VIEW_ARROW_PRELIT))
3055         {
3056           GtkTreePath *path = NULL;
3057
3058           path = _gtk_tree_view_find_path (tree_view,
3059                                            tree_view->priv->button_pressed_tree,
3060                                            tree_view->priv->button_pressed_node);
3061           /* Actually activate the node */
3062           if (tree_view->priv->button_pressed_node->children == NULL)
3063             gtk_tree_view_real_expand_row (tree_view, path,
3064                                            tree_view->priv->button_pressed_tree,
3065                                            tree_view->priv->button_pressed_node,
3066                                            FALSE, TRUE);
3067           else
3068             gtk_tree_view_real_collapse_row (GTK_TREE_VIEW (widget), path,
3069                                              tree_view->priv->button_pressed_tree,
3070                                              tree_view->priv->button_pressed_node, TRUE);
3071           gtk_tree_path_free (path);
3072         }
3073
3074       tree_view->priv->button_pressed_tree = NULL;
3075       tree_view->priv->button_pressed_node = NULL;
3076     }
3077
3078   return TRUE;
3079 }
3080
3081 static gboolean
3082 gtk_tree_view_grab_broken (GtkWidget          *widget,
3083                            GdkEventGrabBroken *event)
3084 {
3085   GtkTreeView *tree_view = GTK_TREE_VIEW (widget);
3086
3087   if (GTK_TREE_VIEW_FLAG_SET (tree_view, GTK_TREE_VIEW_IN_COLUMN_DRAG))
3088     gtk_tree_view_button_release_drag_column (widget, (GdkEventButton *)event);
3089
3090   if (GTK_TREE_VIEW_FLAG_SET (tree_view, GTK_TREE_VIEW_IN_COLUMN_RESIZE))
3091     gtk_tree_view_button_release_column_resize (widget, (GdkEventButton *)event);
3092
3093   return TRUE;
3094 }
3095
3096 #if 0
3097 static gboolean
3098 gtk_tree_view_configure (GtkWidget *widget,
3099                          GdkEventConfigure *event)
3100 {
3101   GtkTreeView *tree_view;
3102
3103   tree_view = GTK_TREE_VIEW (widget);
3104   tree_view->priv->search_position_func (tree_view, tree_view->priv->search_window);
3105
3106   return FALSE;
3107 }
3108 #endif
3109
3110 /* GtkWidget::motion_event function set.
3111  */
3112
3113 static gboolean
3114 coords_are_over_arrow (GtkTreeView *tree_view,
3115                        GtkRBTree   *tree,
3116                        GtkRBNode   *node,
3117                        /* these are in bin window coords */
3118                        gint         x,
3119                        gint         y)
3120 {
3121   GdkRectangle arrow;
3122   gint x2;
3123
3124   if (!gtk_widget_get_realized (GTK_WIDGET (tree_view)))
3125     return FALSE;
3126
3127   if ((node->flags & GTK_RBNODE_IS_PARENT) == 0)
3128     return FALSE;
3129
3130   arrow.y = BACKGROUND_FIRST_PIXEL (tree_view, tree, node);
3131
3132   arrow.height = ROW_HEIGHT (tree_view, BACKGROUND_HEIGHT (node));
3133
3134   gtk_tree_view_get_arrow_xrange (tree_view, tree, &arrow.x, &x2);
3135
3136   arrow.width = x2 - arrow.x;
3137
3138   return (x >= arrow.x &&
3139           x < (arrow.x + arrow.width) &&
3140           y >= arrow.y &&
3141           y < (arrow.y + arrow.height));
3142 }
3143
3144 static gboolean
3145 auto_expand_timeout (gpointer data)
3146 {
3147   GtkTreeView *tree_view = GTK_TREE_VIEW (data);
3148   GtkTreePath *path;
3149
3150   if (tree_view->priv->prelight_node)
3151     {
3152       path = _gtk_tree_view_find_path (tree_view,
3153                                        tree_view->priv->prelight_tree,
3154                                        tree_view->priv->prelight_node);
3155
3156       if (tree_view->priv->prelight_node->children)
3157         gtk_tree_view_collapse_row (tree_view, path);
3158       else
3159         gtk_tree_view_expand_row (tree_view, path, FALSE);
3160
3161       gtk_tree_path_free (path);
3162     }
3163
3164   tree_view->priv->auto_expand_timeout = 0;
3165
3166   return FALSE;
3167 }
3168
3169 static void
3170 remove_auto_expand_timeout (GtkTreeView *tree_view)
3171 {
3172   if (tree_view->priv->auto_expand_timeout != 0)
3173     {
3174       g_source_remove (tree_view->priv->auto_expand_timeout);
3175       tree_view->priv->auto_expand_timeout = 0;
3176     }
3177 }
3178
3179 static void
3180 do_prelight (GtkTreeView *tree_view,
3181              GtkRBTree   *tree,
3182              GtkRBNode   *node,
3183              /* these are in bin_window coords */
3184              gint         x,
3185              gint         y)
3186 {
3187   if (tree_view->priv->prelight_tree == tree &&
3188       tree_view->priv->prelight_node == node)
3189     {
3190       /*  We are still on the same node,
3191           but we might need to take care of the arrow  */
3192
3193       if (tree && node && TREE_VIEW_DRAW_EXPANDERS (tree_view))
3194         {
3195           gboolean over_arrow;
3196           gboolean flag_set;
3197
3198           over_arrow = coords_are_over_arrow (tree_view, tree, node, x, y);
3199           flag_set = GTK_TREE_VIEW_FLAG_SET (tree_view,
3200                                              GTK_TREE_VIEW_ARROW_PRELIT);
3201
3202           if (over_arrow != flag_set)
3203             {
3204               if (over_arrow)
3205                 GTK_TREE_VIEW_SET_FLAG (tree_view,
3206                                         GTK_TREE_VIEW_ARROW_PRELIT);
3207               else
3208                 GTK_TREE_VIEW_UNSET_FLAG (tree_view,
3209                                           GTK_TREE_VIEW_ARROW_PRELIT);
3210
3211               gtk_tree_view_draw_arrow (tree_view, tree, node, x, y);
3212             }
3213         }
3214
3215       return;
3216     }
3217
3218   if (tree_view->priv->prelight_tree && tree_view->priv->prelight_node)
3219     {
3220       /*  Unprelight the old node and arrow  */
3221
3222       GTK_RBNODE_UNSET_FLAG (tree_view->priv->prelight_node,
3223                              GTK_RBNODE_IS_PRELIT);
3224
3225       if (GTK_TREE_VIEW_FLAG_SET (tree_view, GTK_TREE_VIEW_ARROW_PRELIT)
3226           && TREE_VIEW_DRAW_EXPANDERS (tree_view))
3227         {
3228           GTK_TREE_VIEW_UNSET_FLAG (tree_view, GTK_TREE_VIEW_ARROW_PRELIT);
3229
3230           gtk_tree_view_draw_arrow (tree_view,
3231                                     tree_view->priv->prelight_tree,
3232                                     tree_view->priv->prelight_node,
3233                                     x,
3234                                     y);
3235         }
3236
3237       _gtk_tree_view_queue_draw_node (tree_view,
3238                                       tree_view->priv->prelight_tree,
3239                                       tree_view->priv->prelight_node,
3240                                       NULL);
3241     }
3242
3243
3244   if (tree_view->priv->hover_expand)
3245     remove_auto_expand_timeout (tree_view);
3246
3247   /*  Set the new prelight values  */
3248   tree_view->priv->prelight_node = node;
3249   tree_view->priv->prelight_tree = tree;
3250
3251   if (!node || !tree)
3252     return;
3253
3254   /*  Prelight the new node and arrow  */
3255
3256   if (TREE_VIEW_DRAW_EXPANDERS (tree_view)
3257       && coords_are_over_arrow (tree_view, tree, node, x, y))
3258     {
3259       GTK_TREE_VIEW_SET_FLAG (tree_view, GTK_TREE_VIEW_ARROW_PRELIT);
3260
3261       gtk_tree_view_draw_arrow (tree_view, tree, node, x, y);
3262     }
3263
3264   GTK_RBNODE_SET_FLAG (node, GTK_RBNODE_IS_PRELIT);
3265
3266   _gtk_tree_view_queue_draw_node (tree_view, tree, node, NULL);
3267
3268   if (tree_view->priv->hover_expand)
3269     {
3270       tree_view->priv->auto_expand_timeout =
3271         gdk_threads_add_timeout (AUTO_EXPAND_TIMEOUT, auto_expand_timeout, tree_view);
3272     }
3273 }
3274
3275 static void
3276 prelight_or_select (GtkTreeView *tree_view,
3277                     GtkRBTree   *tree,
3278                     GtkRBNode   *node,
3279                     /* these are in bin_window coords */
3280                     gint         x,
3281                     gint         y)
3282 {
3283   GtkSelectionMode mode = gtk_tree_selection_get_mode (tree_view->priv->selection);
3284
3285   if (tree_view->priv->hover_selection &&
3286       (mode == GTK_SELECTION_SINGLE || mode == GTK_SELECTION_BROWSE) &&
3287       !(tree_view->priv->edited_column &&
3288         tree_view->priv->edited_column->editable_widget))
3289     {
3290       if (node)
3291         {
3292           if (!GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_SELECTED))
3293             {
3294               GtkTreePath *path;
3295
3296               path = _gtk_tree_view_find_path (tree_view, tree, node);
3297               gtk_tree_selection_select_path (tree_view->priv->selection, path);
3298               if (GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_SELECTED))
3299                 {
3300                   GTK_TREE_VIEW_UNSET_FLAG (tree_view, GTK_TREE_VIEW_DRAW_KEYFOCUS);
3301                   gtk_tree_view_real_set_cursor (tree_view, path, FALSE, FALSE);
3302                 }
3303               gtk_tree_path_free (path);
3304             }
3305         }
3306
3307       else if (mode == GTK_SELECTION_SINGLE)
3308         gtk_tree_selection_unselect_all (tree_view->priv->selection);
3309     }
3310
3311     do_prelight (tree_view, tree, node, x, y);
3312 }
3313
3314 static void
3315 ensure_unprelighted (GtkTreeView *tree_view)
3316 {
3317   do_prelight (tree_view,
3318                NULL, NULL,
3319                -1000, -1000); /* coords not possibly over an arrow */
3320
3321   g_assert (tree_view->priv->prelight_node == NULL);
3322 }
3323
3324 static void
3325 update_prelight (GtkTreeView *tree_view,
3326                  gint         x,
3327                  gint         y)
3328 {
3329   int new_y;
3330   GtkRBTree *tree;
3331   GtkRBNode *node;
3332
3333   if (tree_view->priv->tree == NULL)
3334     return;
3335
3336   if (x == -10000)
3337     {
3338       ensure_unprelighted (tree_view);
3339       return;
3340     }
3341
3342   new_y = TREE_WINDOW_Y_TO_RBTREE_Y (tree_view, y);
3343   if (new_y < 0)
3344     new_y = 0;
3345
3346   _gtk_rbtree_find_offset (tree_view->priv->tree,
3347                            new_y, &tree, &node);
3348
3349   if (node)
3350     prelight_or_select (tree_view, tree, node, x, y);
3351 }
3352
3353
3354
3355
3356 /* Our motion arrow is either a box (in the case of the original spot)
3357  * or an arrow.  It is expander_size wide.
3358  */
3359 /*
3360  * 11111111111111
3361  * 01111111111110
3362  * 00111111111100
3363  * 00011111111000
3364  * 00001111110000
3365  * 00000111100000
3366  * 00000111100000
3367  * 00000111100000
3368  * ~ ~ ~ ~ ~ ~ ~
3369  * 00000111100000
3370  * 00000111100000
3371  * 00000111100000
3372  * 00001111110000
3373  * 00011111111000
3374  * 00111111111100
3375  * 01111111111110
3376  * 11111111111111
3377  */
3378
3379 static void
3380 gtk_tree_view_motion_draw_column_motion_arrow (GtkTreeView *tree_view)
3381 {
3382   GtkTreeViewColumnReorder *reorder = tree_view->priv->cur_reorder;
3383   GtkWidget *widget = GTK_WIDGET (tree_view);
3384   GdkBitmap *mask = NULL;
3385   gint x;
3386   gint y;
3387   gint width;
3388   gint height;
3389   gint arrow_type = DRAG_COLUMN_WINDOW_STATE_UNSET;
3390   GdkWindowAttr attributes;
3391   guint attributes_mask;
3392   cairo_t *cr;
3393
3394   if (!reorder ||
3395       reorder->left_column == tree_view->priv->drag_column ||
3396       reorder->right_column == tree_view->priv->drag_column)
3397     arrow_type = DRAG_COLUMN_WINDOW_STATE_ORIGINAL;
3398   else if (reorder->left_column || reorder->right_column)
3399     {
3400       GdkRectangle visible_rect;
3401       gtk_tree_view_get_visible_rect (tree_view, &visible_rect);
3402       if (reorder->left_column)
3403         x = reorder->left_column->button->allocation.x + reorder->left_column->button->allocation.width;
3404       else
3405         x = reorder->right_column->button->allocation.x;
3406
3407       if (x < visible_rect.x)
3408         arrow_type = DRAG_COLUMN_WINDOW_STATE_ARROW_LEFT;
3409       else if (x > visible_rect.x + visible_rect.width)
3410         arrow_type = DRAG_COLUMN_WINDOW_STATE_ARROW_RIGHT;
3411       else
3412         arrow_type = DRAG_COLUMN_WINDOW_STATE_ARROW;
3413     }
3414
3415   /* We want to draw the rectangle over the initial location. */
3416   if (arrow_type == DRAG_COLUMN_WINDOW_STATE_ORIGINAL)
3417     {
3418       if (tree_view->priv->drag_column_window_state != DRAG_COLUMN_WINDOW_STATE_ORIGINAL)
3419         {
3420           if (tree_view->priv->drag_highlight_window)
3421             {
3422               gdk_window_set_user_data (tree_view->priv->drag_highlight_window,
3423                                         NULL);
3424               gdk_window_destroy (tree_view->priv->drag_highlight_window);
3425             }
3426
3427           attributes.window_type = GDK_WINDOW_CHILD;
3428           attributes.wclass = GDK_INPUT_OUTPUT;
3429           attributes.x = tree_view->priv->drag_column_x;
3430           attributes.y = 0;
3431           width = attributes.width = tree_view->priv->drag_column->button->allocation.width;
3432           height = attributes.height = tree_view->priv->drag_column->button->allocation.height;
3433           attributes.visual = gtk_widget_get_visual (GTK_WIDGET (tree_view));
3434           attributes.colormap = gtk_widget_get_colormap (GTK_WIDGET (tree_view));
3435           attributes.event_mask = GDK_VISIBILITY_NOTIFY_MASK | GDK_EXPOSURE_MASK | GDK_POINTER_MOTION_MASK;
3436           attributes_mask = GDK_WA_X | GDK_WA_Y | GDK_WA_VISUAL | GDK_WA_COLORMAP;
3437           tree_view->priv->drag_highlight_window = gdk_window_new (tree_view->priv->header_window, &attributes, attributes_mask);
3438           gdk_window_set_user_data (tree_view->priv->drag_highlight_window, GTK_WIDGET (tree_view));
3439
3440           mask = gdk_pixmap_new (tree_view->priv->drag_highlight_window, width, height, 1);
3441           cr = gdk_cairo_create (mask);
3442
3443           cairo_set_operator (cr, CAIRO_OPERATOR_CLEAR);
3444           cairo_paint (cr);
3445           cairo_set_operator (cr, CAIRO_OPERATOR_SOURCE);
3446           cairo_rectangle (cr, 1, 1, width - 2, height - 2);
3447           cairo_stroke (cr);
3448           cairo_destroy (cr);
3449
3450           gdk_window_shape_combine_mask (tree_view->priv->drag_highlight_window,
3451                                          mask, 0, 0);
3452           if (mask) g_object_unref (mask);
3453           tree_view->priv->drag_column_window_state = DRAG_COLUMN_WINDOW_STATE_ORIGINAL;
3454         }
3455     }
3456   else if (arrow_type == DRAG_COLUMN_WINDOW_STATE_ARROW)
3457     {
3458       width = tree_view->priv->expander_size;
3459
3460       /* Get x, y, width, height of arrow */
3461       gdk_window_get_origin (tree_view->priv->header_window, &x, &y);
3462       if (reorder->left_column)
3463         {
3464           x += reorder->left_column->button->allocation.x + reorder->left_column->button->allocation.width - width/2;
3465           height = reorder->left_column->button->allocation.height;
3466         }
3467       else
3468         {
3469           x += reorder->right_column->button->allocation.x - width/2;
3470           height = reorder->right_column->button->allocation.height;
3471         }
3472       y -= tree_view->priv->expander_size/2; /* The arrow takes up only half the space */
3473       height += tree_view->priv->expander_size;
3474
3475       /* Create the new window */
3476       if (tree_view->priv->drag_column_window_state != DRAG_COLUMN_WINDOW_STATE_ARROW)
3477         {
3478           if (tree_view->priv->drag_highlight_window)
3479             {
3480               gdk_window_set_user_data (tree_view->priv->drag_highlight_window,
3481                                         NULL);
3482               gdk_window_destroy (tree_view->priv->drag_highlight_window);
3483             }
3484
3485           attributes.window_type = GDK_WINDOW_TEMP;
3486           attributes.wclass = GDK_INPUT_OUTPUT;
3487           attributes.visual = gtk_widget_get_visual (GTK_WIDGET (tree_view));
3488           attributes.colormap = gtk_widget_get_colormap (GTK_WIDGET (tree_view));
3489           attributes.event_mask = GDK_VISIBILITY_NOTIFY_MASK | GDK_EXPOSURE_MASK | GDK_POINTER_MOTION_MASK;
3490           attributes_mask = GDK_WA_X | GDK_WA_Y | GDK_WA_VISUAL | GDK_WA_COLORMAP;
3491           attributes.x = x;
3492           attributes.y = y;
3493           attributes.width = width;
3494           attributes.height = height;
3495           tree_view->priv->drag_highlight_window = gdk_window_new (gtk_widget_get_root_window (widget),
3496                                                                    &attributes, attributes_mask);
3497           gdk_window_set_user_data (tree_view->priv->drag_highlight_window, GTK_WIDGET (tree_view));
3498
3499           mask = gdk_pixmap_new (tree_view->priv->drag_highlight_window, width, height, 1);
3500           cr = gdk_cairo_create (mask);
3501
3502           cairo_set_operator (cr, CAIRO_OPERATOR_CLEAR);
3503           cairo_paint (cr);
3504           cairo_set_operator (cr, CAIRO_OPERATOR_SOURCE);
3505           cairo_move_to (cr, 0, 0);
3506           cairo_line_to (cr, width, 0);
3507           cairo_line_to (cr, width / 2., width / 2);
3508           cairo_move_to (cr, 0, height);
3509           cairo_line_to (cr, width, height);
3510           cairo_line_to (cr, width / 2., height - width / 2.);
3511           cairo_fill (cr);
3512
3513           cairo_destroy (cr);
3514           gdk_window_shape_combine_mask (tree_view->priv->drag_highlight_window,
3515                                          mask, 0, 0);
3516           if (mask) g_object_unref (mask);
3517         }
3518
3519       tree_view->priv->drag_column_window_state = DRAG_COLUMN_WINDOW_STATE_ARROW;
3520       gdk_window_move (tree_view->priv->drag_highlight_window, x, y);
3521     }
3522   else if (arrow_type == DRAG_COLUMN_WINDOW_STATE_ARROW_LEFT ||
3523            arrow_type == DRAG_COLUMN_WINDOW_STATE_ARROW_RIGHT)
3524     {
3525       width = tree_view->priv->expander_size;
3526
3527       /* Get x, y, width, height of arrow */
3528       width = width/2; /* remember, the arrow only takes half the available width */
3529       gdk_window_get_origin (widget->window, &x, &y);
3530       if (arrow_type == DRAG_COLUMN_WINDOW_STATE_ARROW_RIGHT)
3531         x += widget->allocation.width - width;
3532
3533       if (reorder->left_column)
3534         height = reorder->left_column->button->allocation.height;
3535       else
3536         height = reorder->right_column->button->allocation.height;
3537
3538       y -= tree_view->priv->expander_size;
3539       height += 2*tree_view->priv->expander_size;
3540
3541       /* Create the new window */
3542       if (tree_view->priv->drag_column_window_state != DRAG_COLUMN_WINDOW_STATE_ARROW_LEFT &&
3543           tree_view->priv->drag_column_window_state != DRAG_COLUMN_WINDOW_STATE_ARROW_RIGHT)
3544         {
3545           if (tree_view->priv->drag_highlight_window)
3546             {
3547               gdk_window_set_user_data (tree_view->priv->drag_highlight_window,
3548                                         NULL);
3549               gdk_window_destroy (tree_view->priv->drag_highlight_window);
3550             }
3551
3552           attributes.window_type = GDK_WINDOW_TEMP;
3553           attributes.wclass = GDK_INPUT_OUTPUT;
3554           attributes.visual = gtk_widget_get_visual (GTK_WIDGET (tree_view));
3555           attributes.colormap = gtk_widget_get_colormap (GTK_WIDGET (tree_view));
3556           attributes.event_mask = GDK_VISIBILITY_NOTIFY_MASK | GDK_EXPOSURE_MASK | GDK_POINTER_MOTION_MASK;
3557           attributes_mask = GDK_WA_X | GDK_WA_Y | GDK_WA_VISUAL | GDK_WA_COLORMAP;
3558           attributes.x = x;
3559           attributes.y = y;
3560           attributes.width = width;
3561           attributes.height = height;
3562           tree_view->priv->drag_highlight_window = gdk_window_new (NULL, &attributes, attributes_mask);
3563           gdk_window_set_user_data (tree_view->priv->drag_highlight_window, GTK_WIDGET (tree_view));
3564
3565           mask = gdk_pixmap_new (tree_view->priv->drag_highlight_window, width, height, 1);
3566           cr = gdk_cairo_create (mask);
3567
3568           cairo_set_operator (cr, CAIRO_OPERATOR_CLEAR);
3569           cairo_paint (cr);
3570           cairo_set_operator (cr, CAIRO_OPERATOR_SOURCE);
3571           /* mirror if we're on the left */
3572           if (arrow_type == DRAG_COLUMN_WINDOW_STATE_ARROW_LEFT)
3573             {
3574               cairo_translate (cr, width, 0);
3575               cairo_scale (cr, -1, 1);
3576             }
3577           cairo_move_to (cr, 0, 0);
3578           cairo_line_to (cr, width, width);
3579           cairo_line_to (cr, 0, tree_view->priv->expander_size);
3580           cairo_move_to (cr, 0, height);
3581           cairo_line_to (cr, width, height - width);
3582           cairo_line_to (cr, 0, height - tree_view->priv->expander_size);
3583           cairo_fill (cr);
3584
3585           cairo_destroy (cr);
3586           gdk_window_shape_combine_mask (tree_view->priv->drag_highlight_window,
3587                                          mask, 0, 0);
3588           if (mask) g_object_unref (mask);
3589         }
3590
3591       tree_view->priv->drag_column_window_state = arrow_type;
3592       gdk_window_move (tree_view->priv->drag_highlight_window, x, y);
3593    }
3594   else
3595     {
3596       g_warning (G_STRLOC"Invalid GtkTreeViewColumnReorder struct");
3597       gdk_window_hide (tree_view->priv->drag_highlight_window);
3598       return;
3599     }
3600
3601   gdk_window_show (tree_view->priv->drag_highlight_window);
3602   gdk_window_raise (tree_view->priv->drag_highlight_window);
3603 }
3604
3605 static gboolean
3606 gtk_tree_view_motion_resize_column (GtkWidget      *widget,
3607                                     GdkEventMotion *event)
3608 {
3609   gint x;
3610   gint new_width;
3611   GtkTreeViewColumn *column;
3612   GtkTreeView *tree_view = GTK_TREE_VIEW (widget);
3613
3614   column = gtk_tree_view_get_column (tree_view, tree_view->priv->drag_pos);
3615
3616   if (event->is_hint || event->window != widget->window)
3617     gtk_widget_get_pointer (widget, &x, NULL);
3618   else
3619     x = event->x;
3620
3621   if (tree_view->priv->hadjustment)
3622     x += tree_view->priv->hadjustment->value;
3623
3624   new_width = gtk_tree_view_new_column_width (tree_view,
3625                                               tree_view->priv->drag_pos, &x);
3626   if (x != tree_view->priv->x_drag &&
3627       (new_width != column->fixed_width))
3628     {
3629       column->use_resized_width = TRUE;
3630       column->resized_width = new_width;
3631       if (column->expand)
3632         column->resized_width -= tree_view->priv->last_extra_space_per_column;
3633       gtk_widget_queue_resize (widget);
3634     }
3635
3636   return FALSE;
3637 }
3638
3639
3640 static void
3641 gtk_tree_view_update_current_reorder (GtkTreeView *tree_view)
3642 {
3643   GtkTreeViewColumnReorder *reorder = NULL;
3644   GList *list;
3645   gint mouse_x;
3646
3647   gdk_window_get_pointer (tree_view->priv->header_window, &mouse_x, NULL, NULL);
3648   for (list = tree_view->priv->column_drag_info; list; list = list->next)
3649     {
3650       reorder = (GtkTreeViewColumnReorder *) list->data;
3651       if (mouse_x >= reorder->left_align && mouse_x < reorder->right_align)
3652         break;
3653       reorder = NULL;
3654     }
3655
3656   /*  if (reorder && reorder == tree_view->priv->cur_reorder)
3657       return;*/
3658
3659   tree_view->priv->cur_reorder = reorder;
3660   gtk_tree_view_motion_draw_column_motion_arrow (tree_view);
3661 }
3662
3663 static void
3664 gtk_tree_view_vertical_autoscroll (GtkTreeView *tree_view)
3665 {
3666   GdkRectangle visible_rect;
3667   gint y;
3668   gint offset;
3669
3670   gdk_window_get_pointer (tree_view->priv->bin_window, NULL, &y, NULL);
3671   y += tree_view->priv->dy;
3672
3673   gtk_tree_view_get_visible_rect (tree_view, &visible_rect);
3674
3675   /* see if we are near the edge. */
3676   offset = y - (visible_rect.y + 2 * SCROLL_EDGE_SIZE);
3677   if (offset > 0)
3678     {
3679       offset = y - (visible_rect.y + visible_rect.height - 2 * SCROLL_EDGE_SIZE);
3680       if (offset < 0)
3681         return;
3682     }
3683
3684   gtk_adjustment_set_value (tree_view->priv->vadjustment,
3685                             MAX (tree_view->priv->vadjustment->value + offset, 0.0));
3686 }
3687
3688 static gboolean
3689 gtk_tree_view_horizontal_autoscroll (GtkTreeView *tree_view)
3690 {
3691   GdkRectangle visible_rect;
3692   gint x;
3693   gint offset;
3694
3695   gdk_window_get_pointer (tree_view->priv->bin_window, &x, NULL, NULL);
3696
3697   gtk_tree_view_get_visible_rect (tree_view, &visible_rect);
3698
3699   /* See if we are near the edge. */
3700   offset = x - (visible_rect.x + SCROLL_EDGE_SIZE);
3701   if (offset > 0)
3702     {
3703       offset = x - (visible_rect.x + visible_rect.width - SCROLL_EDGE_SIZE);
3704       if (offset < 0)
3705         return TRUE;
3706     }
3707   offset = offset/3;
3708
3709   gtk_adjustment_set_value (tree_view->priv->hadjustment,
3710                             MAX (tree_view->priv->hadjustment->value + offset, 0.0));
3711
3712   return TRUE;
3713
3714 }
3715
3716 static gboolean
3717 gtk_tree_view_motion_drag_column (GtkWidget      *widget,
3718                                   GdkEventMotion *event)
3719 {
3720   GtkTreeView *tree_view = (GtkTreeView *) widget;
3721   GtkTreeViewColumn *column = tree_view->priv->drag_column;
3722   gint x, y;
3723
3724   /* Sanity Check */
3725   if ((column == NULL) ||
3726       (event->window != tree_view->priv->drag_window))
3727     return FALSE;
3728
3729   /* Handle moving the header */
3730   gdk_window_get_position (tree_view->priv->drag_window, &x, &y);
3731   x = CLAMP (x + (gint)event->x - column->drag_x, 0,
3732              MAX (tree_view->priv->width, GTK_WIDGET (tree_view)->allocation.width) - column->button->allocation.width);
3733   gdk_window_move (tree_view->priv->drag_window, x, y);
3734
3735   /* autoscroll, if needed */
3736   gtk_tree_view_horizontal_autoscroll (tree_view);
3737   /* Update the current reorder position and arrow; */
3738   gtk_tree_view_update_current_reorder (tree_view);
3739
3740   return TRUE;
3741 }
3742
3743 static void
3744 gtk_tree_view_stop_rubber_band (GtkTreeView *tree_view)
3745 {
3746   remove_scroll_timeout (tree_view);
3747   gtk_grab_remove (GTK_WIDGET (tree_view));
3748
3749   if (tree_view->priv->rubber_band_status == RUBBER_BAND_ACTIVE)
3750     {
3751       GtkTreePath *tmp_path;
3752
3753       gtk_widget_queue_draw (GTK_WIDGET (tree_view));
3754
3755       /* The anchor path should be set to the start path */
3756       tmp_path = _gtk_tree_view_find_path (tree_view,
3757                                            tree_view->priv->rubber_band_start_tree,
3758                                            tree_view->priv->rubber_band_start_node);
3759
3760       if (tree_view->priv->anchor)
3761         gtk_tree_row_reference_free (tree_view->priv->anchor);
3762
3763       tree_view->priv->anchor =
3764         gtk_tree_row_reference_new_proxy (G_OBJECT (tree_view),
3765                                           tree_view->priv->model,
3766                                           tmp_path);
3767
3768       gtk_tree_path_free (tmp_path);
3769
3770       /* ... and the cursor to the end path */
3771       tmp_path = _gtk_tree_view_find_path (tree_view,
3772                                            tree_view->priv->rubber_band_end_tree,
3773                                            tree_view->priv->rubber_band_end_node);
3774       gtk_tree_view_real_set_cursor (GTK_TREE_VIEW (tree_view), tmp_path, FALSE, FALSE);
3775       gtk_tree_path_free (tmp_path);
3776
3777       _gtk_tree_selection_emit_changed (tree_view->priv->selection);
3778     }
3779
3780   /* Clear status variables */
3781   tree_view->priv->rubber_band_status = RUBBER_BAND_OFF;
3782   tree_view->priv->rubber_band_shift = 0;
3783   tree_view->priv->rubber_band_ctrl = 0;
3784
3785   tree_view->priv->rubber_band_start_node = NULL;
3786   tree_view->priv->rubber_band_start_tree = NULL;
3787   tree_view->priv->rubber_band_end_node = NULL;
3788   tree_view->priv->rubber_band_end_tree = NULL;
3789 }
3790
3791 static void
3792 gtk_tree_view_update_rubber_band_selection_range (GtkTreeView *tree_view,
3793                                                  GtkRBTree   *start_tree,
3794                                                  GtkRBNode   *start_node,
3795                                                  GtkRBTree   *end_tree,
3796                                                  GtkRBNode   *end_node,
3797                                                  gboolean     select,
3798                                                  gboolean     skip_start,
3799                                                  gboolean     skip_end)
3800 {
3801   if (start_node == end_node)
3802     return;
3803
3804   /* We skip the first node and jump inside the loop */
3805   if (skip_start)
3806     goto skip_first;
3807
3808   do
3809     {
3810       /* Small optimization by assuming insensitive nodes are never
3811        * selected.
3812        */
3813       if (!GTK_RBNODE_FLAG_SET (start_node, GTK_RBNODE_IS_SELECTED))
3814         {
3815           GtkTreePath *path;
3816           gboolean selectable;
3817
3818           path = _gtk_tree_view_find_path (tree_view, start_tree, start_node);
3819           selectable = _gtk_tree_selection_row_is_selectable (tree_view->priv->selection, start_node, path);
3820           gtk_tree_path_free (path);
3821
3822           if (!selectable)
3823             goto node_not_selectable;
3824         }
3825
3826       if (select)
3827         {
3828           if (tree_view->priv->rubber_band_shift)
3829             GTK_RBNODE_SET_FLAG (start_node, GTK_RBNODE_IS_SELECTED);
3830           else if (tree_view->priv->rubber_band_ctrl)
3831             {
3832               /* Toggle the selection state */
3833               if (GTK_RBNODE_FLAG_SET (start_node, GTK_RBNODE_IS_SELECTED))
3834                 GTK_RBNODE_UNSET_FLAG (start_node, GTK_RBNODE_IS_SELECTED);
3835               else
3836                 GTK_RBNODE_SET_FLAG (start_node, GTK_RBNODE_IS_SELECTED);
3837             }
3838           else
3839             GTK_RBNODE_SET_FLAG (start_node, GTK_RBNODE_IS_SELECTED);
3840         }
3841       else
3842         {
3843           /* Mirror the above */
3844           if (tree_view->priv->rubber_band_shift)
3845             GTK_RBNODE_UNSET_FLAG (start_node, GTK_RBNODE_IS_SELECTED);
3846           else if (tree_view->priv->rubber_band_ctrl)
3847             {
3848               /* Toggle the selection state */
3849               if (GTK_RBNODE_FLAG_SET (start_node, GTK_RBNODE_IS_SELECTED))
3850                 GTK_RBNODE_UNSET_FLAG (start_node, GTK_RBNODE_IS_SELECTED);
3851               else
3852                 GTK_RBNODE_SET_FLAG (start_node, GTK_RBNODE_IS_SELECTED);
3853             }
3854           else
3855             GTK_RBNODE_UNSET_FLAG (start_node, GTK_RBNODE_IS_SELECTED);
3856         }
3857
3858       _gtk_tree_view_queue_draw_node (tree_view, start_tree, start_node, NULL);
3859
3860 node_not_selectable:
3861       if (start_node == end_node)
3862         break;
3863
3864 skip_first:
3865
3866       if (start_node->children)
3867         {
3868           start_tree = start_node->children;
3869           start_node = start_tree->root;
3870           while (start_node->left != start_tree->nil)
3871             start_node = start_node->left;
3872         }
3873       else
3874         {
3875           _gtk_rbtree_next_full (start_tree, start_node, &start_tree, &start_node);
3876
3877           if (!start_tree)
3878             /* Ran out of tree */
3879             break;
3880         }
3881
3882       if (skip_end && start_node == end_node)
3883         break;
3884     }
3885   while (TRUE);
3886 }
3887
3888 static void
3889 gtk_tree_view_update_rubber_band_selection (GtkTreeView *tree_view)
3890 {
3891   GtkRBTree *start_tree, *end_tree;
3892   GtkRBNode *start_node, *end_node;
3893
3894   _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);
3895   _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);
3896
3897   /* Handle the start area first */
3898   if (!tree_view->priv->rubber_band_start_node)
3899     {
3900       gtk_tree_view_update_rubber_band_selection_range (tree_view,
3901                                                        start_tree,
3902                                                        start_node,
3903                                                        end_tree,
3904                                                        end_node,
3905                                                        TRUE,
3906                                                        FALSE,
3907                                                        FALSE);
3908     }
3909   else if (_gtk_rbtree_node_find_offset (start_tree, start_node) <
3910            _gtk_rbtree_node_find_offset (tree_view->priv->rubber_band_start_tree, tree_view->priv->rubber_band_start_node))
3911     {
3912       /* New node is above the old one; selection became bigger */
3913       gtk_tree_view_update_rubber_band_selection_range (tree_view,
3914                                                        start_tree,
3915                                                        start_node,
3916                                                        tree_view->priv->rubber_band_start_tree,
3917                                                        tree_view->priv->rubber_band_start_node,
3918                                                        TRUE,
3919                                                        FALSE,
3920                                                        TRUE);
3921     }
3922   else if (_gtk_rbtree_node_find_offset (start_tree, start_node) >
3923            _gtk_rbtree_node_find_offset (tree_view->priv->rubber_band_start_tree, tree_view->priv->rubber_band_start_node))
3924     {
3925       /* New node is below the old one; selection became smaller */
3926       gtk_tree_view_update_rubber_band_selection_range (tree_view,
3927                                                        tree_view->priv->rubber_band_start_tree,
3928                                                        tree_view->priv->rubber_band_start_node,
3929                                                        start_tree,
3930                                                        start_node,
3931                                                        FALSE,
3932                                                        FALSE,
3933                                                        TRUE);
3934     }
3935
3936   tree_view->priv->rubber_band_start_tree = start_tree;
3937   tree_view->priv->rubber_band_start_node = start_node;
3938
3939   /* Next, handle the end area */
3940   if (!tree_view->priv->rubber_band_end_node)
3941     {
3942       /* In the event this happens, start_node was also NULL; this case is
3943        * handled above.
3944        */
3945     }
3946   else if (!end_node)
3947     {
3948       /* Find the last node in the tree */
3949       _gtk_rbtree_find_offset (tree_view->priv->tree, tree_view->priv->height - 1,
3950                                &end_tree, &end_node);
3951
3952       /* Selection reached end of the tree */
3953       gtk_tree_view_update_rubber_band_selection_range (tree_view,
3954                                                        tree_view->priv->rubber_band_end_tree,
3955                                                        tree_view->priv->rubber_band_end_node,
3956                                                        end_tree,
3957                                                        end_node,
3958                                                        TRUE,
3959                                                        TRUE,
3960                                                        FALSE);
3961     }
3962   else if (_gtk_rbtree_node_find_offset (end_tree, end_node) >
3963            _gtk_rbtree_node_find_offset (tree_view->priv->rubber_band_end_tree, tree_view->priv->rubber_band_end_node))
3964     {
3965       /* New node is below the old one; selection became bigger */
3966       gtk_tree_view_update_rubber_band_selection_range (tree_view,
3967                                                        tree_view->priv->rubber_band_end_tree,
3968                                                        tree_view->priv->rubber_band_end_node,
3969                                                        end_tree,
3970                                                        end_node,
3971                                                        TRUE,
3972                                                        TRUE,
3973                                                        FALSE);
3974     }
3975   else if (_gtk_rbtree_node_find_offset (end_tree, end_node) <
3976            _gtk_rbtree_node_find_offset (tree_view->priv->rubber_band_end_tree, tree_view->priv->rubber_band_end_node))
3977     {
3978       /* New node is above the old one; selection became smaller */
3979       gtk_tree_view_update_rubber_band_selection_range (tree_view,
3980                                                        end_tree,
3981                                                        end_node,
3982                                                        tree_view->priv->rubber_band_end_tree,
3983                                                        tree_view->priv->rubber_band_end_node,
3984                                                        FALSE,
3985                                                        TRUE,
3986                                                        FALSE);
3987     }
3988
3989   tree_view->priv->rubber_band_end_tree = end_tree;
3990   tree_view->priv->rubber_band_end_node = end_node;
3991 }
3992
3993 static void
3994 gtk_tree_view_update_rubber_band (GtkTreeView *tree_view)
3995 {
3996   gint x, y;
3997   GdkRectangle old_area;
3998   GdkRectangle new_area;
3999   GdkRectangle common;
4000   cairo_region_t *invalid_region;
4001
4002   old_area.x = MIN (tree_view->priv->press_start_x, tree_view->priv->rubber_band_x);
4003   old_area.y = MIN (tree_view->priv->press_start_y, tree_view->priv->rubber_band_y) - tree_view->priv->dy;
4004   old_area.width = ABS (tree_view->priv->rubber_band_x - tree_view->priv->press_start_x) + 1;
4005   old_area.height = ABS (tree_view->priv->rubber_band_y - tree_view->priv->press_start_y) + 1;
4006
4007   gdk_window_get_pointer (tree_view->priv->bin_window, &x, &y, NULL);
4008
4009   x = MAX (x, 0);
4010   y = MAX (y, 0) + tree_view->priv->dy;
4011
4012   new_area.x = MIN (tree_view->priv->press_start_x, x);
4013   new_area.y = MIN (tree_view->priv->press_start_y, y) - tree_view->priv->dy;
4014   new_area.width = ABS (x - tree_view->priv->press_start_x) + 1;
4015   new_area.height = ABS (y - tree_view->priv->press_start_y) + 1;
4016
4017   invalid_region = cairo_region_create_rectangle (&old_area);
4018   cairo_region_union_rectangle (invalid_region, &new_area);
4019
4020   gdk_rectangle_intersect (&old_area, &new_area, &common);
4021   if (common.width > 2 && common.height > 2)
4022     {
4023       cairo_region_t *common_region;
4024
4025       /* make sure the border is invalidated */
4026       common.x += 1;
4027       common.y += 1;
4028       common.width -= 2;
4029       common.height -= 2;
4030
4031       common_region = cairo_region_create_rectangle (&common);
4032
4033       cairo_region_subtract (invalid_region, common_region);
4034       cairo_region_destroy (common_region);
4035     }
4036
4037   gdk_window_invalidate_region (tree_view->priv->bin_window, invalid_region, TRUE);
4038
4039   cairo_region_destroy (invalid_region);
4040
4041   tree_view->priv->rubber_band_x = x;
4042   tree_view->priv->rubber_band_y = y;
4043
4044   gtk_tree_view_update_rubber_band_selection (tree_view);
4045 }
4046
4047 static void
4048 gtk_tree_view_paint_rubber_band (GtkTreeView  *tree_view,
4049                                 GdkRectangle *area)
4050 {
4051   cairo_t *cr;
4052   GdkRectangle rect;
4053   GdkRectangle rubber_rect;
4054
4055   rubber_rect.x = MIN (tree_view->priv->press_start_x, tree_view->priv->rubber_band_x);
4056   rubber_rect.y = MIN (tree_view->priv->press_start_y, tree_view->priv->rubber_band_y) - tree_view->priv->dy;
4057   rubber_rect.width = ABS (tree_view->priv->press_start_x - tree_view->priv->rubber_band_x) + 1;
4058   rubber_rect.height = ABS (tree_view->priv->press_start_y - tree_view->priv->rubber_band_y) + 1;
4059
4060   if (!gdk_rectangle_intersect (&rubber_rect, area, &rect))
4061     return;
4062
4063   cr = gdk_cairo_create (tree_view->priv->bin_window);
4064   cairo_set_line_width (cr, 1.0);
4065
4066   cairo_set_source_rgba (cr,
4067                          GTK_WIDGET (tree_view)->style->fg[GTK_STATE_NORMAL].red / 65535.,
4068                          GTK_WIDGET (tree_view)->style->fg[GTK_STATE_NORMAL].green / 65535.,
4069                          GTK_WIDGET (tree_view)->style->fg[GTK_STATE_NORMAL].blue / 65535.,
4070                          .25);
4071
4072   gdk_cairo_rectangle (cr, &rect);
4073   cairo_clip (cr);
4074   cairo_paint (cr);
4075
4076   cairo_set_source_rgb (cr,
4077                         GTK_WIDGET (tree_view)->style->fg[GTK_STATE_NORMAL].red / 65535.,
4078                         GTK_WIDGET (tree_view)->style->fg[GTK_STATE_NORMAL].green / 65535.,
4079                         GTK_WIDGET (tree_view)->style->fg[GTK_STATE_NORMAL].blue / 65535.);
4080
4081   cairo_rectangle (cr,
4082                    rubber_rect.x + 0.5, rubber_rect.y + 0.5,
4083                    rubber_rect.width - 1, rubber_rect.height - 1);
4084   cairo_stroke (cr);
4085
4086   cairo_destroy (cr);
4087 }
4088
4089 static gboolean
4090 gtk_tree_view_motion_bin_window (GtkWidget      *widget,
4091                                  GdkEventMotion *event)
4092 {
4093   GtkTreeView *tree_view;
4094   GtkRBTree *tree;
4095   GtkRBNode *node;
4096   gint new_y;
4097
4098   tree_view = (GtkTreeView *) widget;
4099
4100   if (tree_view->priv->tree == NULL)
4101     return FALSE;
4102
4103   if (tree_view->priv->rubber_band_status == RUBBER_BAND_MAYBE_START)
4104     {
4105       gtk_grab_add (GTK_WIDGET (tree_view));
4106       gtk_tree_view_update_rubber_band (tree_view);
4107
4108       tree_view->priv->rubber_band_status = RUBBER_BAND_ACTIVE;
4109     }
4110   else if (tree_view->priv->rubber_band_status == RUBBER_BAND_ACTIVE)
4111     {
4112       gtk_tree_view_update_rubber_band (tree_view);
4113
4114       add_scroll_timeout (tree_view);
4115     }
4116
4117   /* only check for an initiated drag when a button is pressed */
4118   if (tree_view->priv->pressed_button >= 0
4119       && !tree_view->priv->rubber_band_status)
4120     gtk_tree_view_maybe_begin_dragging_row (tree_view, event);
4121
4122   new_y = TREE_WINDOW_Y_TO_RBTREE_Y(tree_view, event->y);
4123   if (new_y < 0)
4124     new_y = 0;
4125
4126   _gtk_rbtree_find_offset (tree_view->priv->tree, new_y, &tree, &node);
4127
4128   /* If we are currently pressing down a button, we don't want to prelight anything else. */
4129   if ((tree_view->priv->button_pressed_node != NULL) &&
4130       (tree_view->priv->button_pressed_node != node))
4131     node = NULL;
4132
4133   tree_view->priv->event_last_x = event->x;
4134   tree_view->priv->event_last_y = event->y;
4135
4136   prelight_or_select (tree_view, tree, node, event->x, event->y);
4137
4138   return TRUE;
4139 }
4140
4141 static gboolean
4142 gtk_tree_view_motion (GtkWidget      *widget,
4143                       GdkEventMotion *event)
4144 {
4145   GtkTreeView *tree_view;
4146
4147   tree_view = (GtkTreeView *) widget;
4148
4149   /* Resizing a column */
4150   if (GTK_TREE_VIEW_FLAG_SET (tree_view, GTK_TREE_VIEW_IN_COLUMN_RESIZE))
4151     return gtk_tree_view_motion_resize_column (widget, event);
4152
4153   /* Drag column */
4154   if (GTK_TREE_VIEW_FLAG_SET (tree_view, GTK_TREE_VIEW_IN_COLUMN_DRAG))
4155     return gtk_tree_view_motion_drag_column (widget, event);
4156
4157   /* Sanity check it */
4158   if (event->window == tree_view->priv->bin_window)
4159     return gtk_tree_view_motion_bin_window (widget, event);
4160
4161   return FALSE;
4162 }
4163
4164 /* Invalidate the focus rectangle near the edge of the bin_window; used when
4165  * the tree is empty.
4166  */
4167 static void
4168 invalidate_empty_focus (GtkTreeView *tree_view)
4169 {
4170   GdkRectangle area;
4171
4172   if (!gtk_widget_has_focus (GTK_WIDGET (tree_view)))
4173     return;
4174
4175   area.x = 0;
4176   area.y = 0;
4177   gdk_drawable_get_size (tree_view->priv->bin_window, &area.width, &area.height);
4178   gdk_window_invalidate_rect (tree_view->priv->bin_window, &area, FALSE);
4179 }
4180
4181 /* Draws a focus rectangle near the edge of the bin_window; used when the tree
4182  * is empty.
4183  */
4184 static void
4185 draw_empty_focus (GtkTreeView *tree_view, GdkRectangle *clip_area)
4186 {
4187   GtkWidget *widget = GTK_WIDGET (tree_view);
4188   gint w, h;
4189
4190   if (!gtk_widget_has_focus (widget))
4191     return;
4192
4193   gdk_drawable_get_size (tree_view->priv->bin_window, &w, &h);
4194
4195   w -= 2;
4196   h -= 2;
4197
4198   if (w > 0 && h > 0)
4199     gtk_paint_focus (gtk_widget_get_style (widget),
4200                      tree_view->priv->bin_window,
4201                      gtk_widget_get_state (widget),
4202                      clip_area,
4203                      widget,
4204                      NULL,
4205                      1, 1, w, h);
4206 }
4207
4208 typedef enum {
4209   GTK_TREE_VIEW_GRID_LINE,
4210   GTK_TREE_VIEW_TREE_LINE,
4211   GTK_TREE_VIEW_FOREGROUND_LINE
4212 } GtkTreeViewLineType;
4213
4214 static void
4215 gtk_tree_view_draw_line (GtkTreeView         *tree_view,
4216                          GdkWindow           *window,
4217                          GtkTreeViewLineType  type,
4218                          int                  x1,
4219                          int                  y1,
4220                          int                  x2,
4221                          int                  y2)
4222 {
4223   cairo_t *cr;
4224
4225   cr = gdk_cairo_create (window);
4226
4227   switch (type)
4228     {
4229     case GTK_TREE_VIEW_TREE_LINE:
4230       cairo_set_source_rgb (cr, 0, 0, 0);
4231       cairo_set_line_width (cr, tree_view->priv->tree_line_width);
4232       if (tree_view->priv->tree_line_dashes[0])
4233         cairo_set_dash (cr,
4234                         tree_view->priv->tree_line_dashes,
4235                         2, 0.5);
4236       break;
4237     case GTK_TREE_VIEW_GRID_LINE:
4238       cairo_set_source_rgb (cr, 0, 0, 0);
4239       cairo_set_line_width (cr, tree_view->priv->grid_line_width);
4240       if (tree_view->priv->grid_line_dashes[0])
4241         cairo_set_dash (cr,
4242                         tree_view->priv->grid_line_dashes,
4243                         2, 0.5);
4244       break;
4245     default:
4246       g_assert_not_reached ();
4247       /* fall through */
4248     case GTK_TREE_VIEW_FOREGROUND_LINE:
4249       cairo_set_line_width (cr, 1.0);
4250       gdk_cairo_set_source_color (cr,
4251           &GTK_WIDGET (tree_view)->style->fg[gtk_widget_get_state (GTK_WIDGET (tree_view))]);
4252       break;
4253     }
4254
4255   cairo_move_to (cr, x1 + 0.5, y1 + 0.5);
4256   cairo_line_to (cr, x2 + 0.5, y2 + 0.5);
4257   cairo_stroke (cr);
4258
4259   cairo_destroy (cr);
4260 }
4261
4262 static void
4263 gtk_tree_view_draw_grid_lines (GtkTreeView    *tree_view,
4264                                GdkEventExpose *event,
4265                                gint            n_visible_columns)
4266 {
4267   GList *list = tree_view->priv->columns;
4268   gint i = 0;
4269   gint current_x = 0;
4270
4271   if (tree_view->priv->grid_lines != GTK_TREE_VIEW_GRID_LINES_VERTICAL
4272       && tree_view->priv->grid_lines != GTK_TREE_VIEW_GRID_LINES_BOTH)
4273     return;
4274
4275   /* Only draw the lines for visible rows and columns */
4276   for (list = tree_view->priv->columns; list; list = list->next, i++)
4277     {
4278       GtkTreeViewColumn *column = list->data;
4279
4280       /* We don't want a line for the last column */
4281       if (i == n_visible_columns - 1)
4282         break;
4283
4284       if (! column->visible)
4285         continue;
4286
4287       current_x += column->width;
4288
4289       gtk_tree_view_draw_line (tree_view, event->window,
4290                                GTK_TREE_VIEW_GRID_LINE,
4291                                current_x - 1, 0,
4292                                current_x - 1, tree_view->priv->height);
4293     }
4294 }
4295
4296 /* Warning: Very scary function.
4297  * Modify at your own risk
4298  *
4299  * KEEP IN SYNC WITH gtk_tree_view_create_row_drag_icon()!
4300  * FIXME: It's not...
4301  */
4302 static gboolean
4303 gtk_tree_view_bin_expose (GtkWidget      *widget,
4304                           GdkEventExpose *event)
4305 {
4306   GtkTreeView *tree_view = GTK_TREE_VIEW (widget);
4307   GtkTreePath *path;
4308   GtkRBTree *tree;
4309   GList *list;
4310   GtkRBNode *node;
4311   GtkRBNode *cursor = NULL;
4312   GtkRBTree *cursor_tree = NULL;
4313   GtkRBNode *drag_highlight = NULL;
4314   GtkRBTree *drag_highlight_tree = NULL;
4315   GtkTreeIter iter;
4316   gint new_y;
4317   gint y_offset, cell_offset;
4318   gint max_height;
4319   gint depth;
4320   GdkRectangle background_area;
4321   GdkRectangle cell_area;
4322   guint flags;
4323   gint highlight_x;
4324   gint expander_cell_width;
4325   gint bin_window_width;
4326   gint bin_window_height;
4327   GtkTreePath *cursor_path;
4328   GtkTreePath *drag_dest_path;
4329   GList *first_column, *last_column;
4330   gint vertical_separator;
4331   gint horizontal_separator;
4332   gint focus_line_width;
4333   gboolean allow_rules;
4334   gboolean has_special_cell;
4335   gboolean rtl;
4336   gint n_visible_columns;
4337   gint pointer_x, pointer_y;
4338   gint grid_line_width;
4339   gboolean got_pointer = FALSE;
4340   gboolean row_ending_details;
4341   gboolean draw_vgrid_lines, draw_hgrid_lines;
4342
4343   rtl = (gtk_widget_get_direction (widget) == GTK_TEXT_DIR_RTL);
4344
4345   gtk_widget_style_get (widget,
4346                         "horizontal-separator", &horizontal_separator,
4347                         "vertical-separator", &vertical_separator,
4348                         "allow-rules", &allow_rules,
4349                         "focus-line-width", &focus_line_width,
4350                         "row-ending-details", &row_ending_details,
4351                         NULL);
4352
4353   if (tree_view->priv->tree == NULL)
4354     {
4355       draw_empty_focus (tree_view, &event->area);
4356       return TRUE;
4357     }
4358
4359   /* clip event->area to the visible area */
4360   if (event->area.height < 0)
4361     return TRUE;
4362
4363   validate_visible_area (tree_view);
4364
4365   new_y = TREE_WINDOW_Y_TO_RBTREE_Y (tree_view, event->area.y);
4366
4367   if (new_y < 0)
4368     new_y = 0;
4369   y_offset = -_gtk_rbtree_find_offset (tree_view->priv->tree, new_y, &tree, &node);
4370   gdk_drawable_get_size (tree_view->priv->bin_window,
4371                          &bin_window_width, &bin_window_height);
4372
4373   if (tree_view->priv->height < bin_window_height)
4374     {
4375       gtk_paint_flat_box (widget->style,
4376                           event->window,
4377                           widget->state,
4378                           GTK_SHADOW_NONE,
4379                           &event->area,
4380                           widget,
4381                           "cell_even",
4382                           0, tree_view->priv->height,
4383                           bin_window_width,
4384                           bin_window_height - tree_view->priv->height);
4385     }
4386
4387   if (node == NULL)
4388     return TRUE;
4389
4390   /* find the path for the node */
4391   path = _gtk_tree_view_find_path ((GtkTreeView *)widget,
4392                                    tree,
4393                                    node);
4394   gtk_tree_model_get_iter (tree_view->priv->model,
4395                            &iter,
4396                            path);
4397   depth = gtk_tree_path_get_depth (path);
4398   gtk_tree_path_free (path);
4399
4400   cursor_path = NULL;
4401   drag_dest_path = NULL;
4402
4403   if (tree_view->priv->cursor)
4404     cursor_path = gtk_tree_row_reference_get_path (tree_view->priv->cursor);
4405
4406   if (cursor_path)
4407     _gtk_tree_view_find_node (tree_view, cursor_path,
4408                               &cursor_tree, &cursor);
4409
4410   if (tree_view->priv->drag_dest_row)
4411     drag_dest_path = gtk_tree_row_reference_get_path (tree_view->priv->drag_dest_row);
4412
4413   if (drag_dest_path)
4414     _gtk_tree_view_find_node (tree_view, drag_dest_path,
4415                               &drag_highlight_tree, &drag_highlight);
4416
4417   draw_vgrid_lines =
4418     tree_view->priv->grid_lines == GTK_TREE_VIEW_GRID_LINES_VERTICAL
4419     || tree_view->priv->grid_lines == GTK_TREE_VIEW_GRID_LINES_BOTH;
4420   draw_hgrid_lines =
4421     tree_view->priv->grid_lines == GTK_TREE_VIEW_GRID_LINES_HORIZONTAL
4422     || tree_view->priv->grid_lines == GTK_TREE_VIEW_GRID_LINES_BOTH;
4423
4424   if (draw_vgrid_lines || draw_hgrid_lines)
4425     gtk_widget_style_get (widget, "grid-line-width", &grid_line_width, NULL);
4426
4427   n_visible_columns = 0;
4428   for (list = tree_view->priv->columns; list; list = list->next)
4429     {
4430       if (! GTK_TREE_VIEW_COLUMN (list->data)->visible)
4431         continue;
4432       n_visible_columns ++;
4433     }
4434
4435   /* Find the last column */
4436   for (last_column = g_list_last (tree_view->priv->columns);
4437        last_column && !(GTK_TREE_VIEW_COLUMN (last_column->data)->visible);
4438        last_column = last_column->prev)
4439     ;
4440
4441   /* and the first */
4442   for (first_column = g_list_first (tree_view->priv->columns);
4443        first_column && !(GTK_TREE_VIEW_COLUMN (first_column->data)->visible);
4444        first_column = first_column->next)
4445     ;
4446
4447   /* Actually process the expose event.  To do this, we want to
4448    * start at the first node of the event, and walk the tree in
4449    * order, drawing each successive node.
4450    */
4451
4452   do
4453     {
4454       gboolean parity;
4455       gboolean is_separator = FALSE;
4456       gboolean is_first = FALSE;
4457       gboolean is_last = FALSE;
4458
4459       is_separator = row_is_separator (tree_view, &iter, NULL);
4460
4461       max_height = ROW_HEIGHT (tree_view, BACKGROUND_HEIGHT (node));
4462
4463       cell_offset = 0;
4464       highlight_x = 0; /* should match x coord of first cell */
4465       expander_cell_width = 0;
4466
4467       background_area.y = y_offset + event->area.y;
4468       background_area.height = max_height;
4469
4470       flags = 0;
4471
4472       if (GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_PRELIT))
4473         flags |= GTK_CELL_RENDERER_PRELIT;
4474
4475       if (GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_SELECTED))
4476         flags |= GTK_CELL_RENDERER_SELECTED;
4477
4478       parity = _gtk_rbtree_node_find_parity (tree, node);
4479
4480       /* we *need* to set cell data on all cells before the call
4481        * to _has_special_cell, else _has_special_cell() does not
4482        * return a correct value.
4483        */
4484       for (list = (rtl ? g_list_last (tree_view->priv->columns) : g_list_first (tree_view->priv->columns));
4485            list;
4486            list = (rtl ? list->prev : list->next))
4487         {
4488           GtkTreeViewColumn *column = list->data;
4489           gtk_tree_view_column_cell_set_cell_data (column,
4490                                                    tree_view->priv->model,
4491                                                    &iter,
4492                                                    GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_PARENT),
4493                                                    node->children?TRUE:FALSE);
4494         }
4495
4496       has_special_cell = gtk_tree_view_has_special_cell (tree_view);
4497
4498       for (list = (rtl ? g_list_last (tree_view->priv->columns) : g_list_first (tree_view->priv->columns));
4499            list;
4500            list = (rtl ? list->prev : list->next))
4501         {
4502           GtkTreeViewColumn *column = list->data;
4503           const gchar *detail = NULL;
4504           GtkStateType state;
4505
4506           if (!column->visible)
4507             continue;
4508
4509           if (cell_offset > event->area.x + event->area.width ||
4510               cell_offset + column->width < event->area.x)
4511             {
4512               cell_offset += column->width;
4513               continue;
4514             }
4515
4516           if (column->show_sort_indicator)
4517             flags |= GTK_CELL_RENDERER_SORTED;
4518           else
4519             flags &= ~GTK_CELL_RENDERER_SORTED;
4520
4521           if (cursor == node)
4522             flags |= GTK_CELL_RENDERER_FOCUSED;
4523           else
4524             flags &= ~GTK_CELL_RENDERER_FOCUSED;
4525
4526           background_area.x = cell_offset;
4527           background_area.width = column->width;
4528
4529           cell_area = background_area;
4530           cell_area.y += vertical_separator / 2;
4531           cell_area.x += horizontal_separator / 2;
4532           cell_area.height -= vertical_separator;
4533           cell_area.width -= horizontal_separator;
4534
4535           if (draw_vgrid_lines)
4536             {
4537               if (list == first_column)
4538                 {
4539                   cell_area.width -= grid_line_width / 2;
4540                 }
4541               else if (list == last_column)
4542                 {
4543                   cell_area.x += grid_line_width / 2;
4544                   cell_area.width -= grid_line_width / 2;
4545                 }
4546               else
4547                 {
4548                   cell_area.x += grid_line_width / 2;
4549                   cell_area.width -= grid_line_width;
4550                 }
4551             }
4552
4553           if (draw_hgrid_lines)
4554             {
4555               cell_area.y += grid_line_width / 2;
4556               cell_area.height -= grid_line_width;
4557             }
4558
4559           if (cairo_region_contains_rectangle (event->region, &background_area) == CAIRO_REGION_OVERLAP_OUT)
4560             {
4561               cell_offset += column->width;
4562               continue;
4563             }
4564
4565           gtk_tree_view_column_cell_set_cell_data (column,
4566                                                    tree_view->priv->model,
4567                                                    &iter,
4568                                                    GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_PARENT),
4569                                                    node->children?TRUE:FALSE);
4570
4571           /* Select the detail for drawing the cell.  relevant
4572            * factors are parity, sortedness, and whether to
4573            * display rules.
4574            */
4575           if (allow_rules && tree_view->priv->has_rules)
4576             {
4577               if ((flags & GTK_CELL_RENDERER_SORTED) &&
4578                   n_visible_columns >= 3)
4579                 {
4580                   if (parity)
4581                     detail = "cell_odd_ruled_sorted";
4582                   else
4583                     detail = "cell_even_ruled_sorted";
4584                 }
4585               else
4586                 {
4587                   if (parity)
4588                     detail = "cell_odd_ruled";
4589                   else
4590                     detail = "cell_even_ruled";
4591                 }
4592             }
4593           else
4594             {
4595               if ((flags & GTK_CELL_RENDERER_SORTED) &&
4596                   n_visible_columns >= 3)
4597                 {
4598                   if (parity)
4599                     detail = "cell_odd_sorted";
4600                   else
4601                     detail = "cell_even_sorted";
4602                 }
4603               else
4604                 {
4605                   if (parity)
4606                     detail = "cell_odd";
4607                   else
4608                     detail = "cell_even";
4609                 }
4610             }
4611
4612           g_assert (detail);
4613
4614           if (widget->state == GTK_STATE_INSENSITIVE)
4615             state = GTK_STATE_INSENSITIVE;
4616           else if (flags & GTK_CELL_RENDERER_SELECTED)
4617             state = GTK_STATE_SELECTED;
4618           else
4619             state = GTK_STATE_NORMAL;
4620
4621           /* Draw background */
4622           if (row_ending_details)
4623             {
4624               char new_detail[128];
4625
4626               is_first = (rtl ? !list->next : !list->prev);
4627               is_last = (rtl ? !list->prev : !list->next);
4628
4629               /* (I don't like the snprintfs either, but couldn't find a
4630                * less messy way).
4631                */
4632               if (is_first && is_last)
4633                 g_snprintf (new_detail, 127, "%s", detail);
4634               else if (is_first)
4635                 g_snprintf (new_detail, 127, "%s_start", detail);
4636               else if (is_last)
4637                 g_snprintf (new_detail, 127, "%s_end", detail);
4638               else
4639                 g_snprintf (new_detail, 128, "%s_middle", detail);
4640
4641               gtk_paint_flat_box (widget->style,
4642                                   event->window,
4643                                   state,
4644                                   GTK_SHADOW_NONE,
4645                                   &event->area,
4646                                   widget,
4647                                   new_detail,
4648                                   background_area.x,
4649                                   background_area.y,
4650                                   background_area.width,
4651                                   background_area.height);
4652             }
4653           else
4654             {
4655               gtk_paint_flat_box (widget->style,
4656                                   event->window,
4657                                   state,
4658                                   GTK_SHADOW_NONE,
4659                                   &event->area,
4660                                   widget,
4661                                   detail,
4662                                   background_area.x,
4663                                   background_area.y,
4664                                   background_area.width,
4665                                   background_area.height);
4666             }
4667
4668           if (gtk_tree_view_is_expander_column (tree_view, column))
4669             {
4670               if (!rtl)
4671                 cell_area.x += (depth - 1) * tree_view->priv->level_indentation;
4672               cell_area.width -= (depth - 1) * tree_view->priv->level_indentation;
4673
4674               if (TREE_VIEW_DRAW_EXPANDERS(tree_view))
4675                 {
4676                   if (!rtl)
4677                     cell_area.x += depth * tree_view->priv->expander_size;
4678                   cell_area.width -= depth * tree_view->priv->expander_size;
4679                 }
4680
4681               /* If we have an expander column, the highlight underline
4682                * starts with that column, so that it indicates which
4683                * level of the tree we're dropping at.
4684                */
4685               highlight_x = cell_area.x;
4686               expander_cell_width = cell_area.width;
4687
4688               if (is_separator)
4689                 gtk_paint_hline (widget->style,
4690                                  event->window,
4691                                  state,
4692                                  &cell_area,
4693                                  widget,
4694                                  NULL,
4695                                  cell_area.x,
4696                                  cell_area.x + cell_area.width,
4697                                  cell_area.y + cell_area.height / 2);
4698               else
4699                 _gtk_tree_view_column_cell_render (column,
4700                                                    event->window,
4701                                                    &background_area,
4702                                                    &cell_area,
4703                                                    &event->area,
4704                                                    flags);
4705               if (TREE_VIEW_DRAW_EXPANDERS(tree_view)
4706                   && (node->flags & GTK_RBNODE_IS_PARENT) == GTK_RBNODE_IS_PARENT)
4707                 {
4708                   if (!got_pointer)
4709                     {
4710                       gdk_window_get_pointer (tree_view->priv->bin_window,
4711                                               &pointer_x, &pointer_y, NULL);
4712                       got_pointer = TRUE;
4713                     }
4714
4715                   gtk_tree_view_draw_arrow (GTK_TREE_VIEW (widget),
4716                                             tree,
4717                                             node,
4718                                             pointer_x, pointer_y);
4719                 }
4720             }
4721           else
4722             {
4723               if (is_separator)
4724                 gtk_paint_hline (widget->style,
4725                                  event->window,
4726                                  state,
4727                                  &cell_area,
4728                                  widget,
4729                                  NULL,
4730                                  cell_area.x,
4731                                  cell_area.x + cell_area.width,
4732                                  cell_area.y + cell_area.height / 2);
4733               else
4734                 _gtk_tree_view_column_cell_render (column,
4735                                                    event->window,
4736                                                    &background_area,
4737                                                    &cell_area,
4738                                                    &event->area,
4739                                                    flags);
4740             }
4741
4742           if (draw_hgrid_lines)
4743             {
4744               if (background_area.y > 0)
4745                 gtk_tree_view_draw_line (tree_view, event->window,
4746                                          GTK_TREE_VIEW_GRID_LINE,
4747                                          background_area.x, background_area.y,
4748                                          background_area.x + background_area.width,
4749                                          background_area.y);
4750
4751               if (y_offset + max_height >= event->area.height)
4752                 gtk_tree_view_draw_line (tree_view, event->window,
4753                                          GTK_TREE_VIEW_GRID_LINE,
4754                                          background_area.x, background_area.y + max_height,
4755                                          background_area.x + background_area.width,
4756                                          background_area.y + max_height);
4757             }
4758
4759           if (gtk_tree_view_is_expander_column (tree_view, column) &&
4760               tree_view->priv->tree_lines_enabled)
4761             {
4762               gint x = background_area.x;
4763               gint mult = rtl ? -1 : 1;
4764               gint y0 = background_area.y;
4765               gint y1 = background_area.y + background_area.height/2;
4766               gint y2 = background_area.y + background_area.height;
4767
4768               if (rtl)
4769                 x += background_area.width - 1;
4770
4771               if ((node->flags & GTK_RBNODE_IS_PARENT) == GTK_RBNODE_IS_PARENT
4772                   && depth > 1)
4773                 {
4774                   gtk_tree_view_draw_line (tree_view, event->window,
4775                                            GTK_TREE_VIEW_TREE_LINE,
4776                                            x + tree_view->priv->expander_size * (depth - 1.5) * mult,
4777                                            y1,
4778                                            x + tree_view->priv->expander_size * (depth - 1.1) * mult,
4779                                            y1);
4780                 }
4781               else if (depth > 1)
4782                 {
4783                   gtk_tree_view_draw_line (tree_view, event->window,
4784                                            GTK_TREE_VIEW_TREE_LINE,
4785                                            x + tree_view->priv->expander_size * (depth - 1.5) * mult,
4786                                            y1,
4787                                            x + tree_view->priv->expander_size * (depth - 0.5) * mult,
4788                                            y1);
4789                 }
4790
4791               if (depth > 1)
4792                 {
4793                   gint i;
4794                   GtkRBNode *tmp_node;
4795                   GtkRBTree *tmp_tree;
4796
4797                   if (!_gtk_rbtree_next (tree, node))
4798                     gtk_tree_view_draw_line (tree_view, event->window,
4799                                              GTK_TREE_VIEW_TREE_LINE,
4800                                              x + tree_view->priv->expander_size * (depth - 1.5) * mult,
4801                                              y0,
4802                                              x + tree_view->priv->expander_size * (depth - 1.5) * mult,
4803                                              y1);
4804                   else
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                                              y0,
4809                                              x + tree_view->priv->expander_size * (depth - 1.5) * mult,
4810                                              y2);
4811
4812                   tmp_node = tree->parent_node;
4813                   tmp_tree = tree->parent_tree;
4814
4815                   for (i = depth - 2; i > 0; i--)
4816                     {
4817                       if (_gtk_rbtree_next (tmp_tree, tmp_node))
4818                         gtk_tree_view_draw_line (tree_view, event->window,
4819                                                  GTK_TREE_VIEW_TREE_LINE,
4820                                                  x + tree_view->priv->expander_size * (i - 0.5) * mult,
4821                                                  y0,
4822                                                  x + tree_view->priv->expander_size * (i - 0.5) * mult,
4823                                                  y2);
4824
4825                       tmp_node = tmp_tree->parent_node;
4826                       tmp_tree = tmp_tree->parent_tree;
4827                     }
4828                 }
4829             }
4830
4831           if (node == cursor && has_special_cell &&
4832               ((column == tree_view->priv->focus_column &&
4833                 GTK_TREE_VIEW_FLAG_SET (tree_view, GTK_TREE_VIEW_DRAW_KEYFOCUS) &&
4834                 gtk_widget_has_focus (widget)) ||
4835                (column == tree_view->priv->edited_column)))
4836             {
4837               _gtk_tree_view_column_cell_draw_focus (column,
4838                                                      event->window,
4839                                                      &background_area,
4840                                                      &cell_area,
4841                                                      &event->area,
4842                                                      flags);
4843             }
4844
4845           cell_offset += column->width;
4846         }
4847
4848       if (node == drag_highlight)
4849         {
4850           /* Draw indicator for the drop
4851            */
4852           gint highlight_y = -1;
4853           GtkRBTree *tree = NULL;
4854           GtkRBNode *node = NULL;
4855           gint width;
4856
4857           switch (tree_view->priv->drag_dest_pos)
4858             {
4859             case GTK_TREE_VIEW_DROP_BEFORE:
4860               highlight_y = background_area.y - 1;
4861               if (highlight_y < 0)
4862                       highlight_y = 0;
4863               break;
4864
4865             case GTK_TREE_VIEW_DROP_AFTER:
4866               highlight_y = background_area.y + background_area.height - 1;
4867               break;
4868
4869             case GTK_TREE_VIEW_DROP_INTO_OR_BEFORE:
4870             case GTK_TREE_VIEW_DROP_INTO_OR_AFTER:
4871               _gtk_tree_view_find_node (tree_view, drag_dest_path, &tree, &node);
4872
4873               if (tree == NULL)
4874                 break;
4875               gdk_drawable_get_size (tree_view->priv->bin_window,
4876                                      &width, NULL);
4877
4878               if (row_ending_details)
4879                 gtk_paint_focus (widget->style,
4880                                  tree_view->priv->bin_window,
4881                                  gtk_widget_get_state (widget),
4882                                  &event->area,
4883                                  widget,
4884                                  (is_first
4885                                   ? (is_last ? "treeview-drop-indicator" : "treeview-drop-indicator-left" )
4886                                   : (is_last ? "treeview-drop-indicator-right" : "tree-view-drop-indicator-middle" )),
4887                                  0, BACKGROUND_FIRST_PIXEL (tree_view, tree, node)
4888                                  - focus_line_width / 2,
4889                                  width, ROW_HEIGHT (tree_view, BACKGROUND_HEIGHT (node))
4890                                - focus_line_width + 1);
4891               else
4892                 gtk_paint_focus (widget->style,
4893                                  tree_view->priv->bin_window,
4894                                  gtk_widget_get_state (widget),
4895                                  &event->area,
4896                                  widget,
4897                                  "treeview-drop-indicator",
4898                                  0, BACKGROUND_FIRST_PIXEL (tree_view, tree, node)
4899                                  - focus_line_width / 2,
4900                                  width, ROW_HEIGHT (tree_view, BACKGROUND_HEIGHT (node))
4901                                  - focus_line_width + 1);
4902               break;
4903             }
4904
4905           if (highlight_y >= 0)
4906             {
4907               gtk_tree_view_draw_line (tree_view, event->window,
4908                                        GTK_TREE_VIEW_FOREGROUND_LINE,
4909                                        rtl ? highlight_x + expander_cell_width : highlight_x,
4910                                        highlight_y,
4911                                        rtl ? 0 : bin_window_width,
4912                                        highlight_y);
4913             }
4914         }
4915
4916       /* draw the big row-spanning focus rectangle, if needed */
4917       if (!has_special_cell && node == cursor &&
4918           GTK_TREE_VIEW_FLAG_SET (tree_view, GTK_TREE_VIEW_DRAW_KEYFOCUS) &&
4919           gtk_widget_has_focus (widget))
4920         {
4921           gint tmp_y, tmp_height;
4922           gint width;
4923           GtkStateType focus_rect_state;
4924
4925           focus_rect_state =
4926             flags & GTK_CELL_RENDERER_SELECTED ? GTK_STATE_SELECTED :
4927             (flags & GTK_CELL_RENDERER_PRELIT ? GTK_STATE_PRELIGHT :
4928              (flags & GTK_CELL_RENDERER_INSENSITIVE ? GTK_STATE_INSENSITIVE :
4929               GTK_STATE_NORMAL));
4930
4931           gdk_drawable_get_size (tree_view->priv->bin_window,
4932                                  &width, NULL);
4933
4934           if (draw_hgrid_lines)
4935             {
4936               tmp_y = BACKGROUND_FIRST_PIXEL (tree_view, tree, node) + grid_line_width / 2;
4937               tmp_height = ROW_HEIGHT (tree_view, BACKGROUND_HEIGHT (node)) - grid_line_width;
4938             }
4939           else
4940             {
4941               tmp_y = BACKGROUND_FIRST_PIXEL (tree_view, tree, node);
4942               tmp_height = ROW_HEIGHT (tree_view, BACKGROUND_HEIGHT (node));
4943             }
4944
4945           if (row_ending_details)
4946             gtk_paint_focus (widget->style,
4947                              tree_view->priv->bin_window,
4948                              focus_rect_state,
4949                              &event->area,
4950                              widget,
4951                              (is_first
4952                               ? (is_last ? "treeview" : "treeview-left" )
4953                               : (is_last ? "treeview-right" : "treeview-middle" )),
4954                              0, tmp_y,
4955                              width, tmp_height);
4956           else
4957             gtk_paint_focus (widget->style,
4958                              tree_view->priv->bin_window,
4959                              focus_rect_state,
4960                              &event->area,
4961                              widget,
4962                              "treeview",
4963                              0, tmp_y,
4964                              width, tmp_height);
4965         }
4966
4967       y_offset += max_height;
4968       if (node->children)
4969         {
4970           GtkTreeIter parent = iter;
4971           gboolean has_child;
4972
4973           tree = node->children;
4974           node = tree->root;
4975
4976           g_assert (node != tree->nil);
4977
4978           while (node->left != tree->nil)
4979             node = node->left;
4980           has_child = gtk_tree_model_iter_children (tree_view->priv->model,
4981                                                     &iter,
4982                                                     &parent);
4983           depth++;
4984
4985           /* Sanity Check! */
4986           TREE_VIEW_INTERNAL_ASSERT (has_child, FALSE);
4987         }
4988       else
4989         {
4990           gboolean done = FALSE;
4991
4992           do
4993             {
4994               node = _gtk_rbtree_next (tree, node);
4995               if (node != NULL)
4996                 {
4997                   gboolean has_next = gtk_tree_model_iter_next (tree_view->priv->model, &iter);
4998                   done = TRUE;
4999
5000                   /* Sanity Check! */
5001                   TREE_VIEW_INTERNAL_ASSERT (has_next, FALSE);
5002                 }
5003               else
5004                 {
5005                   GtkTreeIter parent_iter = iter;
5006                   gboolean has_parent;
5007
5008                   node = tree->parent_node;
5009                   tree = tree->parent_tree;
5010                   if (tree == NULL)
5011                     /* we should go to done to free some memory */
5012                     goto done;
5013                   has_parent = gtk_tree_model_iter_parent (tree_view->priv->model,
5014                                                            &iter,
5015                                                            &parent_iter);
5016                   depth--;
5017
5018                   /* Sanity check */
5019                   TREE_VIEW_INTERNAL_ASSERT (has_parent, FALSE);
5020                 }
5021             }
5022           while (!done);
5023         }
5024     }
5025   while (y_offset < event->area.height);
5026
5027 done:
5028   gtk_tree_view_draw_grid_lines (tree_view, event, n_visible_columns);
5029
5030   if (tree_view->priv->rubber_band_status == RUBBER_BAND_ACTIVE)
5031     {
5032       GdkRectangle rectangle;
5033       gint n_rectangles;
5034
5035       n_rectangles = cairo_region_num_rectangles (event->region);
5036
5037       while (n_rectangles--)
5038         {
5039           cairo_region_get_rectangle (event->region, n_rectangles, &rectangle);
5040           gtk_tree_view_paint_rubber_band (tree_view, &rectangle);
5041         }
5042     }
5043
5044   if (cursor_path)
5045     gtk_tree_path_free (cursor_path);
5046
5047   if (drag_dest_path)
5048     gtk_tree_path_free (drag_dest_path);
5049
5050   return FALSE;
5051 }
5052
5053 static gboolean
5054 gtk_tree_view_expose (GtkWidget      *widget,
5055                       GdkEventExpose *event)
5056 {
5057   GtkTreeView *tree_view = GTK_TREE_VIEW (widget);
5058
5059   if (event->window == tree_view->priv->bin_window)
5060     {
5061       gboolean retval;
5062       GList *tmp_list;
5063
5064       retval = gtk_tree_view_bin_expose (widget, event);
5065
5066       /* We can't just chain up to Container::expose as it will try to send the
5067        * event to the headers, so we handle propagating it to our children
5068        * (eg. widgets being edited) ourselves.
5069        */
5070       tmp_list = tree_view->priv->children;
5071       while (tmp_list)
5072         {
5073           GtkTreeViewChild *child = tmp_list->data;
5074           tmp_list = tmp_list->next;
5075
5076           gtk_container_propagate_expose (GTK_CONTAINER (tree_view), child->widget, event);
5077         }
5078
5079       return retval;
5080     }
5081
5082   else if (event->window == tree_view->priv->header_window)
5083     {
5084       GList *list;
5085
5086       for (list = tree_view->priv->columns; list != NULL; list = list->next)
5087         {
5088           GtkTreeViewColumn *column = list->data;
5089
5090           if (column == tree_view->priv->drag_column)
5091             continue;
5092
5093           if (column->visible)
5094             gtk_container_propagate_expose (GTK_CONTAINER (tree_view),
5095                                             column->button,
5096                                             event);
5097         }
5098     }
5099   else if (event->window == tree_view->priv->drag_window)
5100     {
5101       gtk_container_propagate_expose (GTK_CONTAINER (tree_view),
5102                                       tree_view->priv->drag_column->button,
5103                                       event);
5104     }
5105   return TRUE;
5106 }
5107
5108 enum
5109 {
5110   DROP_HOME,
5111   DROP_RIGHT,
5112   DROP_LEFT,
5113   DROP_END
5114 };
5115
5116 /* returns 0x1 when no column has been found -- yes it's hackish */
5117 static GtkTreeViewColumn *
5118 gtk_tree_view_get_drop_column (GtkTreeView       *tree_view,
5119                                GtkTreeViewColumn *column,
5120                                gint               drop_position)
5121 {
5122   GtkTreeViewColumn *left_column = NULL;
5123   GtkTreeViewColumn *cur_column = NULL;
5124   GList *tmp_list;
5125
5126   if (!column->reorderable)
5127     return (GtkTreeViewColumn *)0x1;
5128
5129   switch (drop_position)
5130     {
5131       case DROP_HOME:
5132         /* find first column where we can drop */
5133         tmp_list = tree_view->priv->columns;
5134         if (column == GTK_TREE_VIEW_COLUMN (tmp_list->data))
5135           return (GtkTreeViewColumn *)0x1;
5136
5137         while (tmp_list)
5138           {
5139             g_assert (tmp_list);
5140
5141             cur_column = GTK_TREE_VIEW_COLUMN (tmp_list->data);
5142             tmp_list = tmp_list->next;
5143
5144             if (left_column && left_column->visible == FALSE)
5145               continue;
5146
5147             if (!tree_view->priv->column_drop_func)
5148               return left_column;
5149
5150             if (!tree_view->priv->column_drop_func (tree_view, column, left_column, cur_column, tree_view->priv->column_drop_func_data))
5151               {
5152                 left_column = cur_column;
5153                 continue;
5154               }
5155
5156             return left_column;
5157           }
5158
5159         if (!tree_view->priv->column_drop_func)
5160           return left_column;
5161
5162         if (tree_view->priv->column_drop_func (tree_view, column, left_column, NULL, tree_view->priv->column_drop_func_data))
5163           return left_column;
5164         else
5165           return (GtkTreeViewColumn *)0x1;
5166         break;
5167
5168       case DROP_RIGHT:
5169         /* find first column after column where we can drop */
5170         tmp_list = tree_view->priv->columns;
5171
5172         for (; tmp_list; tmp_list = tmp_list->next)
5173           if (GTK_TREE_VIEW_COLUMN (tmp_list->data) == column)
5174             break;
5175
5176         if (!tmp_list || !tmp_list->next)
5177           return (GtkTreeViewColumn *)0x1;
5178
5179         tmp_list = tmp_list->next;
5180         left_column = GTK_TREE_VIEW_COLUMN (tmp_list->data);
5181         tmp_list = tmp_list->next;
5182
5183         while (tmp_list)
5184           {
5185             g_assert (tmp_list);
5186
5187             cur_column = GTK_TREE_VIEW_COLUMN (tmp_list->data);
5188             tmp_list = tmp_list->next;
5189
5190             if (left_column && left_column->visible == FALSE)
5191               {
5192                 left_column = cur_column;
5193                 if (tmp_list)
5194                   tmp_list = tmp_list->next;
5195                 continue;
5196               }
5197
5198             if (!tree_view->priv->column_drop_func)
5199               return left_column;
5200
5201             if (!tree_view->priv->column_drop_func (tree_view, column, left_column, cur_column, tree_view->priv->column_drop_func_data))
5202               {
5203                 left_column = cur_column;
5204                 continue;
5205               }
5206
5207             return left_column;
5208           }
5209
5210         if (!tree_view->priv->column_drop_func)
5211           return left_column;
5212
5213         if (tree_view->priv->column_drop_func (tree_view, column, left_column, NULL, tree_view->priv->column_drop_func_data))
5214           return left_column;
5215         else
5216           return (GtkTreeViewColumn *)0x1;
5217         break;
5218
5219       case DROP_LEFT:
5220         /* find first column before column where we can drop */
5221         tmp_list = tree_view->priv->columns;
5222
5223         for (; tmp_list; tmp_list = tmp_list->next)
5224           if (GTK_TREE_VIEW_COLUMN (tmp_list->data) == column)
5225             break;
5226
5227         if (!tmp_list || !tmp_list->prev)
5228           return (GtkTreeViewColumn *)0x1;
5229
5230         tmp_list = tmp_list->prev;
5231         cur_column = GTK_TREE_VIEW_COLUMN (tmp_list->data);
5232         tmp_list = tmp_list->prev;
5233
5234         while (tmp_list)
5235           {
5236             g_assert (tmp_list);
5237
5238             left_column = GTK_TREE_VIEW_COLUMN (tmp_list->data);
5239
5240             if (left_column && !left_column->visible)
5241               {
5242                 /*if (!tmp_list->prev)
5243                   return (GtkTreeViewColumn *)0x1;
5244                   */
5245 /*
5246                 cur_column = GTK_TREE_VIEW_COLUMN (tmp_list->prev->data);
5247                 tmp_list = tmp_list->prev->prev;
5248                 continue;*/
5249
5250                 cur_column = left_column;
5251                 if (tmp_list)
5252                   tmp_list = tmp_list->prev;
5253                 continue;
5254               }
5255
5256             if (!tree_view->priv->column_drop_func)
5257               return left_column;
5258
5259             if (tree_view->priv->column_drop_func (tree_view, column, left_column, cur_column, tree_view->priv->column_drop_func_data))
5260               return left_column;
5261
5262             cur_column = left_column;
5263             tmp_list = tmp_list->prev;
5264           }
5265
5266         if (!tree_view->priv->column_drop_func)
5267           return NULL;
5268
5269         if (tree_view->priv->column_drop_func (tree_view, column, NULL, cur_column, tree_view->priv->column_drop_func_data))
5270           return NULL;
5271         else
5272           return (GtkTreeViewColumn *)0x1;
5273         break;
5274
5275       case DROP_END:
5276         /* same as DROP_HOME case, but doing it backwards */
5277         tmp_list = g_list_last (tree_view->priv->columns);
5278         cur_column = NULL;
5279
5280         if (column == GTK_TREE_VIEW_COLUMN (tmp_list->data))
5281           return (GtkTreeViewColumn *)0x1;
5282
5283         while (tmp_list)
5284           {
5285             g_assert (tmp_list);
5286
5287             left_column = GTK_TREE_VIEW_COLUMN (tmp_list->data);
5288
5289             if (left_column && !left_column->visible)
5290               {
5291                 cur_column = left_column;
5292                 tmp_list = tmp_list->prev;
5293               }
5294
5295             if (!tree_view->priv->column_drop_func)
5296               return left_column;
5297
5298             if (tree_view->priv->column_drop_func (tree_view, column, left_column, cur_column, tree_view->priv->column_drop_func_data))
5299               return left_column;
5300
5301             cur_column = left_column;
5302             tmp_list = tmp_list->prev;
5303           }
5304
5305         if (!tree_view->priv->column_drop_func)
5306           return NULL;
5307
5308         if (tree_view->priv->column_drop_func (tree_view, column, NULL, cur_column, tree_view->priv->column_drop_func_data))
5309           return NULL;
5310         else
5311           return (GtkTreeViewColumn *)0x1;
5312         break;
5313     }
5314
5315   return (GtkTreeViewColumn *)0x1;
5316 }
5317
5318 static gboolean
5319 gtk_tree_view_key_press (GtkWidget   *widget,
5320                          GdkEventKey *event)
5321 {
5322   GtkTreeView *tree_view = (GtkTreeView *) widget;
5323
5324   if (tree_view->priv->rubber_band_status)
5325     {
5326       if (event->keyval == GDK_Escape)
5327         gtk_tree_view_stop_rubber_band (tree_view);
5328
5329       return TRUE;
5330     }
5331
5332   if (GTK_TREE_VIEW_FLAG_SET (tree_view, GTK_TREE_VIEW_IN_COLUMN_DRAG))
5333     {
5334       if (event->keyval == GDK_Escape)
5335         {
5336           tree_view->priv->cur_reorder = NULL;
5337           gtk_tree_view_button_release_drag_column (widget, NULL);
5338         }
5339       return TRUE;
5340     }
5341
5342   if (GTK_TREE_VIEW_FLAG_SET (tree_view, GTK_TREE_VIEW_HEADERS_VISIBLE))
5343     {
5344       GList *focus_column;
5345       gboolean rtl;
5346
5347       rtl = (gtk_widget_get_direction (GTK_WIDGET (tree_view)) == GTK_TEXT_DIR_RTL);
5348
5349       for (focus_column = tree_view->priv->columns;
5350            focus_column;
5351            focus_column = focus_column->next)
5352         {
5353           GtkTreeViewColumn *column = GTK_TREE_VIEW_COLUMN (focus_column->data);
5354
5355           if (gtk_widget_has_focus (column->button))
5356             break;
5357         }
5358
5359       if (focus_column &&
5360           (event->state & GDK_SHIFT_MASK) && (event->state & GDK_MOD1_MASK) &&
5361           (event->keyval == GDK_Left || event->keyval == GDK_KP_Left
5362            || event->keyval == GDK_Right || event->keyval == GDK_KP_Right))
5363         {
5364           GtkTreeViewColumn *column = GTK_TREE_VIEW_COLUMN (focus_column->data);
5365
5366           if (!column->resizable)
5367             {
5368               gtk_widget_error_bell (widget);
5369               return TRUE;
5370             }
5371
5372           if (event->keyval == (rtl ? GDK_Right : GDK_Left)
5373               || event->keyval == (rtl ? GDK_KP_Right : GDK_KP_Left))
5374             {
5375               gint old_width = column->resized_width;
5376
5377               column->resized_width = MAX (column->resized_width,
5378                                            column->width);
5379               column->resized_width -= 2;
5380               if (column->resized_width < 0)
5381                 column->resized_width = 0;
5382
5383               if (column->min_width == -1)
5384                 column->resized_width = MAX (column->button->requisition.width,
5385                                              column->resized_width);
5386               else
5387                 column->resized_width = MAX (column->min_width,
5388                                              column->resized_width);
5389
5390               if (column->max_width != -1)
5391                 column->resized_width = MIN (column->resized_width,
5392                                              column->max_width);
5393
5394               column->use_resized_width = TRUE;
5395
5396               if (column->resized_width != old_width)
5397                 gtk_widget_queue_resize (widget);
5398               else
5399                 gtk_widget_error_bell (widget);
5400             }
5401           else if (event->keyval == (rtl ? GDK_Left : GDK_Right)
5402                    || event->keyval == (rtl ? GDK_KP_Left : GDK_KP_Right))
5403             {
5404               gint old_width = column->resized_width;
5405
5406               column->resized_width = MAX (column->resized_width,
5407                                            column->width);
5408               column->resized_width += 2;
5409
5410               if (column->max_width != -1)
5411                 column->resized_width = MIN (column->resized_width,
5412                                              column->max_width);
5413
5414               column->use_resized_width = TRUE;
5415
5416               if (column->resized_width != old_width)
5417                 gtk_widget_queue_resize (widget);
5418               else
5419                 gtk_widget_error_bell (widget);
5420             }
5421
5422           return TRUE;
5423         }
5424
5425       if (focus_column &&
5426           (event->state & GDK_MOD1_MASK) &&
5427           (event->keyval == GDK_Left || event->keyval == GDK_KP_Left
5428            || event->keyval == GDK_Right || event->keyval == GDK_KP_Right
5429            || event->keyval == GDK_Home || event->keyval == GDK_KP_Home
5430            || event->keyval == GDK_End || event->keyval == GDK_KP_End))
5431         {
5432           GtkTreeViewColumn *column = GTK_TREE_VIEW_COLUMN (focus_column->data);
5433
5434           if (event->keyval == (rtl ? GDK_Right : GDK_Left)
5435               || event->keyval == (rtl ? GDK_KP_Right : GDK_KP_Left))
5436             {
5437               GtkTreeViewColumn *col;
5438               col = gtk_tree_view_get_drop_column (tree_view, column, DROP_LEFT);
5439               if (col != (GtkTreeViewColumn *)0x1)
5440                 gtk_tree_view_move_column_after (tree_view, column, col);
5441               else
5442                 gtk_widget_error_bell (widget);
5443             }
5444           else if (event->keyval == (rtl ? GDK_Left : GDK_Right)
5445                    || event->keyval == (rtl ? GDK_KP_Left : GDK_KP_Right))
5446             {
5447               GtkTreeViewColumn *col;
5448               col = gtk_tree_view_get_drop_column (tree_view, column, DROP_RIGHT);
5449               if (col != (GtkTreeViewColumn *)0x1)
5450                 gtk_tree_view_move_column_after (tree_view, column, col);
5451               else
5452                 gtk_widget_error_bell (widget);
5453             }
5454           else if (event->keyval == GDK_Home || event->keyval == GDK_KP_Home)
5455             {
5456               GtkTreeViewColumn *col;
5457               col = gtk_tree_view_get_drop_column (tree_view, column, DROP_HOME);
5458               if (col != (GtkTreeViewColumn *)0x1)
5459                 gtk_tree_view_move_column_after (tree_view, column, col);
5460               else
5461                 gtk_widget_error_bell (widget);
5462             }
5463           else if (event->keyval == GDK_End || event->keyval == GDK_KP_End)
5464             {
5465               GtkTreeViewColumn *col;
5466               col = gtk_tree_view_get_drop_column (tree_view, column, DROP_END);
5467               if (col != (GtkTreeViewColumn *)0x1)
5468                 gtk_tree_view_move_column_after (tree_view, column, col);
5469               else
5470                 gtk_widget_error_bell (widget);
5471             }
5472
5473           return TRUE;
5474         }
5475     }
5476
5477   /* Chain up to the parent class.  It handles the keybindings. */
5478   if (GTK_WIDGET_CLASS (gtk_tree_view_parent_class)->key_press_event (widget, event))
5479     return TRUE;
5480
5481   if (tree_view->priv->search_entry_avoid_unhandled_binding)
5482     {
5483       tree_view->priv->search_entry_avoid_unhandled_binding = FALSE;
5484       return FALSE;
5485     }
5486
5487   /* We pass the event to the search_entry.  If its text changes, then we start
5488    * the typeahead find capabilities. */
5489   if (gtk_widget_has_focus (GTK_WIDGET (tree_view))
5490       && tree_view->priv->enable_search
5491       && !tree_view->priv->search_custom_entry_set)
5492     {
5493       GdkEvent *new_event;
5494       char *old_text;
5495       const char *new_text;
5496       gboolean retval;
5497       GdkScreen *screen;
5498       gboolean text_modified;
5499       gulong popup_menu_id;
5500
5501       gtk_tree_view_ensure_interactive_directory (tree_view);
5502
5503       /* Make a copy of the current text */
5504       old_text = g_strdup (gtk_entry_get_text (GTK_ENTRY (tree_view->priv->search_entry)));
5505       new_event = gdk_event_copy ((GdkEvent *) event);
5506       g_object_unref (((GdkEventKey *) new_event)->window);
5507       ((GdkEventKey *) new_event)->window = g_object_ref (tree_view->priv->search_window->window);
5508       gtk_widget_realize (tree_view->priv->search_window);
5509
5510       popup_menu_id = g_signal_connect (tree_view->priv->search_entry,
5511                                         "popup-menu", G_CALLBACK (gtk_true),
5512                                         NULL);
5513
5514       /* Move the entry off screen */
5515       screen = gtk_widget_get_screen (GTK_WIDGET (tree_view));
5516       gtk_window_move (GTK_WINDOW (tree_view->priv->search_window),
5517                        gdk_screen_get_width (screen) + 1,
5518                        gdk_screen_get_height (screen) + 1);
5519       gtk_widget_show (tree_view->priv->search_window);
5520
5521       /* Send the event to the window.  If the preedit_changed signal is emitted
5522        * during this event, we will set priv->imcontext_changed  */
5523       tree_view->priv->imcontext_changed = FALSE;
5524       retval = gtk_widget_event (tree_view->priv->search_window, new_event);
5525       gdk_event_free (new_event);
5526       gtk_widget_hide (tree_view->priv->search_window);
5527
5528       g_signal_handler_disconnect (tree_view->priv->search_entry,
5529                                    popup_menu_id);
5530
5531       /* We check to make sure that the entry tried to handle the text, and that
5532        * the text has changed.
5533        */
5534       new_text = gtk_entry_get_text (GTK_ENTRY (tree_view->priv->search_entry));
5535       text_modified = strcmp (old_text, new_text) != 0;
5536       g_free (old_text);
5537       if (tree_view->priv->imcontext_changed ||    /* we're in a preedit */
5538           (retval && text_modified))               /* ...or the text was modified */
5539         {
5540           if (gtk_tree_view_real_start_interactive_search (tree_view,
5541                                                            gdk_event_get_device ((GdkEvent *) event),
5542                                                            FALSE))
5543             {
5544               gtk_widget_grab_focus (GTK_WIDGET (tree_view));
5545               return TRUE;
5546             }
5547           else
5548             {
5549               gtk_entry_set_text (GTK_ENTRY (tree_view->priv->search_entry), "");
5550               return FALSE;
5551             }
5552         }
5553     }
5554
5555   return FALSE;
5556 }
5557
5558 static gboolean
5559 gtk_tree_view_key_release (GtkWidget   *widget,
5560                            GdkEventKey *event)
5561 {
5562   GtkTreeView *tree_view = GTK_TREE_VIEW (widget);
5563
5564   if (tree_view->priv->rubber_band_status)
5565     return TRUE;
5566
5567   return GTK_WIDGET_CLASS (gtk_tree_view_parent_class)->key_release_event (widget, event);
5568 }
5569
5570 /* FIXME Is this function necessary? Can I get an enter_notify event
5571  * w/o either an expose event or a mouse motion event?
5572  */
5573 static gboolean
5574 gtk_tree_view_enter_notify (GtkWidget        *widget,
5575                             GdkEventCrossing *event)
5576 {
5577   GtkTreeView *tree_view = GTK_TREE_VIEW (widget);
5578   GtkRBTree *tree;
5579   GtkRBNode *node;
5580   gint new_y;
5581
5582   /* Sanity check it */
5583   if (event->window != tree_view->priv->bin_window)
5584     return FALSE;
5585
5586   if (tree_view->priv->tree == NULL)
5587     return FALSE;
5588
5589   if (event->mode == GDK_CROSSING_GRAB ||
5590       event->mode == GDK_CROSSING_GTK_GRAB ||
5591       event->mode == GDK_CROSSING_GTK_UNGRAB ||
5592       event->mode == GDK_CROSSING_STATE_CHANGED)
5593     return TRUE;
5594
5595   /* find the node internally */
5596   new_y = TREE_WINDOW_Y_TO_RBTREE_Y(tree_view, event->y);
5597   if (new_y < 0)
5598     new_y = 0;
5599   _gtk_rbtree_find_offset (tree_view->priv->tree, new_y, &tree, &node);
5600
5601   tree_view->priv->event_last_x = event->x;
5602   tree_view->priv->event_last_y = event->y;
5603
5604   if ((tree_view->priv->button_pressed_node == NULL) ||
5605       (tree_view->priv->button_pressed_node == node))
5606     prelight_or_select (tree_view, tree, node, event->x, event->y);
5607
5608   return TRUE;
5609 }
5610
5611 static gboolean
5612 gtk_tree_view_leave_notify (GtkWidget        *widget,
5613                             GdkEventCrossing *event)
5614 {
5615   GtkTreeView *tree_view;
5616
5617   if (event->mode == GDK_CROSSING_GRAB)
5618     return TRUE;
5619
5620   tree_view = GTK_TREE_VIEW (widget);
5621
5622   if (tree_view->priv->prelight_node)
5623     _gtk_tree_view_queue_draw_node (tree_view,
5624                                    tree_view->priv->prelight_tree,
5625                                    tree_view->priv->prelight_node,
5626                                    NULL);
5627
5628   tree_view->priv->event_last_x = -10000;
5629   tree_view->priv->event_last_y = -10000;
5630
5631   prelight_or_select (tree_view,
5632                       NULL, NULL,
5633                       -1000, -1000); /* coords not possibly over an arrow */
5634
5635   return TRUE;
5636 }
5637
5638
5639 static gint
5640 gtk_tree_view_focus_out (GtkWidget     *widget,
5641                          GdkEventFocus *event)
5642 {
5643   GtkTreeView *tree_view;
5644
5645   tree_view = GTK_TREE_VIEW (widget);
5646
5647   gtk_widget_queue_draw (widget);
5648
5649   /* destroy interactive search dialog */
5650   if (tree_view->priv->search_window)
5651     gtk_tree_view_search_dialog_hide (tree_view->priv->search_window, tree_view,
5652                                       gdk_event_get_device ((GdkEvent *) event));
5653
5654   return FALSE;
5655 }
5656
5657
5658 /* Incremental Reflow
5659  */
5660
5661 static void
5662 gtk_tree_view_node_queue_redraw (GtkTreeView *tree_view,
5663                                  GtkRBTree   *tree,
5664                                  GtkRBNode   *node)
5665 {
5666   gint y;
5667
5668   y = _gtk_rbtree_node_find_offset (tree, node)
5669     - tree_view->priv->vadjustment->value
5670     + TREE_VIEW_HEADER_HEIGHT (tree_view);
5671
5672   gtk_widget_queue_draw_area (GTK_WIDGET (tree_view),
5673                               0, y,
5674                               GTK_WIDGET (tree_view)->allocation.width,
5675                               GTK_RBNODE_GET_HEIGHT (node));
5676 }
5677
5678 static gboolean
5679 node_is_visible (GtkTreeView *tree_view,
5680                  GtkRBTree   *tree,
5681                  GtkRBNode   *node)
5682 {
5683   int y;
5684   int height;
5685
5686   y = _gtk_rbtree_node_find_offset (tree, node);
5687   height = ROW_HEIGHT (tree_view, GTK_RBNODE_GET_HEIGHT (node));
5688
5689   if (y >= tree_view->priv->vadjustment->value &&
5690       y + height <= (tree_view->priv->vadjustment->value
5691                      + tree_view->priv->vadjustment->page_size))
5692     return TRUE;
5693
5694   return FALSE;
5695 }
5696
5697 /* Returns TRUE if it updated the size
5698  */
5699 static gboolean
5700 validate_row (GtkTreeView *tree_view,
5701               GtkRBTree   *tree,
5702               GtkRBNode   *node,
5703               GtkTreeIter *iter,
5704               GtkTreePath *path)
5705 {
5706   GtkTreeViewColumn *column;
5707   GList *list, *first_column, *last_column;
5708   gint height = 0;
5709   gint horizontal_separator;
5710   gint vertical_separator;
5711   gint focus_line_width;
5712   gint depth = gtk_tree_path_get_depth (path);
5713   gboolean retval = FALSE;
5714   gboolean is_separator = FALSE;
5715   gboolean draw_vgrid_lines, draw_hgrid_lines;
5716   gint focus_pad;
5717   gint grid_line_width;
5718   gboolean wide_separators;
5719   gint separator_height;
5720
5721   /* double check the row needs validating */
5722   if (! GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_INVALID) &&
5723       ! GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_COLUMN_INVALID))
5724     return FALSE;
5725
5726   is_separator = row_is_separator (tree_view, iter, NULL);
5727
5728   gtk_widget_style_get (GTK_WIDGET (tree_view),
5729                         "focus-padding", &focus_pad,
5730                         "focus-line-width", &focus_line_width,
5731                         "horizontal-separator", &horizontal_separator,
5732                         "vertical-separator", &vertical_separator,
5733                         "grid-line-width", &grid_line_width,
5734                         "wide-separators",  &wide_separators,
5735                         "separator-height", &separator_height,
5736                         NULL);
5737
5738   draw_vgrid_lines =
5739     tree_view->priv->grid_lines == GTK_TREE_VIEW_GRID_LINES_VERTICAL
5740     || tree_view->priv->grid_lines == GTK_TREE_VIEW_GRID_LINES_BOTH;
5741   draw_hgrid_lines =
5742     tree_view->priv->grid_lines == GTK_TREE_VIEW_GRID_LINES_HORIZONTAL
5743     || tree_view->priv->grid_lines == GTK_TREE_VIEW_GRID_LINES_BOTH;
5744
5745   for (last_column = g_list_last (tree_view->priv->columns);
5746        last_column && !(GTK_TREE_VIEW_COLUMN (last_column->data)->visible);
5747        last_column = last_column->prev)
5748     ;
5749
5750   for (first_column = g_list_first (tree_view->priv->columns);
5751        first_column && !(GTK_TREE_VIEW_COLUMN (first_column->data)->visible);
5752        first_column = first_column->next)
5753     ;
5754
5755   for (list = tree_view->priv->columns; list; list = list->next)
5756     {
5757       gint tmp_width;
5758       gint tmp_height;
5759
5760       column = list->data;
5761
5762       if (! column->visible)
5763         continue;
5764
5765       if (GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_COLUMN_INVALID) && !column->dirty)
5766         continue;
5767
5768       gtk_tree_view_column_cell_set_cell_data (column, tree_view->priv->model, iter,
5769                                                GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_PARENT),
5770                                                node->children?TRUE:FALSE);
5771       gtk_tree_view_column_cell_get_size (column,
5772                                           NULL, NULL, NULL,
5773                                           &tmp_width, &tmp_height);
5774
5775       if (!is_separator)
5776         {
5777           tmp_height += vertical_separator;
5778           height = MAX (height, tmp_height);
5779           height = MAX (height, tree_view->priv->expander_size);
5780         }
5781       else
5782         {
5783           if (wide_separators)
5784             height = separator_height + 2 * focus_pad;
5785           else
5786             height = 2 + 2 * focus_pad;
5787         }
5788
5789       if (gtk_tree_view_is_expander_column (tree_view, column))
5790         {
5791           tmp_width = tmp_width + horizontal_separator + (depth - 1) * tree_view->priv->level_indentation;
5792
5793           if (TREE_VIEW_DRAW_EXPANDERS (tree_view))
5794             tmp_width += depth * tree_view->priv->expander_size;
5795         }
5796       else
5797         tmp_width = tmp_width + horizontal_separator;
5798
5799       if (draw_vgrid_lines)
5800         {
5801           if (list->data == first_column || list->data == last_column)
5802             tmp_width += grid_line_width / 2.0;
5803           else
5804             tmp_width += grid_line_width;
5805         }
5806
5807       if (tmp_width > column->requested_width)
5808         {
5809           retval = TRUE;
5810           column->requested_width = tmp_width;
5811         }
5812     }
5813
5814   if (draw_hgrid_lines)
5815     height += grid_line_width;
5816
5817   if (height != GTK_RBNODE_GET_HEIGHT (node))
5818     {
5819       retval = TRUE;
5820       _gtk_rbtree_node_set_height (tree, node, height);
5821     }
5822   _gtk_rbtree_node_mark_valid (tree, node);
5823   tree_view->priv->post_validation_flag = TRUE;
5824
5825   return retval;
5826 }
5827
5828
5829 static void
5830 validate_visible_area (GtkTreeView *tree_view)
5831 {
5832   GtkTreePath *path = NULL;
5833   GtkTreePath *above_path = NULL;
5834   GtkTreeIter iter;
5835   GtkRBTree *tree = NULL;
5836   GtkRBNode *node = NULL;
5837   gboolean need_redraw = FALSE;
5838   gboolean size_changed = FALSE;
5839   gint total_height;
5840   gint area_above = 0;
5841   gint area_below = 0;
5842
5843   if (tree_view->priv->tree == NULL)
5844     return;
5845
5846   if (! GTK_RBNODE_FLAG_SET (tree_view->priv->tree->root, GTK_RBNODE_DESCENDANTS_INVALID) &&
5847       tree_view->priv->scroll_to_path == NULL)
5848     return;
5849
5850   total_height = GTK_WIDGET (tree_view)->allocation.height - TREE_VIEW_HEADER_HEIGHT (tree_view);
5851
5852   if (total_height == 0)
5853     return;
5854
5855   /* First, we check to see if we need to scroll anywhere
5856    */
5857   if (tree_view->priv->scroll_to_path)
5858     {
5859       path = gtk_tree_row_reference_get_path (tree_view->priv->scroll_to_path);
5860       if (path && !_gtk_tree_view_find_node (tree_view, path, &tree, &node))
5861         {
5862           /* we are going to scroll, and will update dy */
5863           gtk_tree_model_get_iter (tree_view->priv->model, &iter, path);
5864           if (GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_INVALID) ||
5865               GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_COLUMN_INVALID))
5866             {
5867               _gtk_tree_view_queue_draw_node (tree_view, tree, node, NULL);
5868               if (validate_row (tree_view, tree, node, &iter, path))
5869                 size_changed = TRUE;
5870             }
5871
5872           if (tree_view->priv->scroll_to_use_align)
5873             {
5874               gint height = ROW_HEIGHT (tree_view, GTK_RBNODE_GET_HEIGHT (node));
5875               area_above = (total_height - height) *
5876                 tree_view->priv->scroll_to_row_align;
5877               area_below = total_height - area_above - height;
5878               area_above = MAX (area_above, 0);
5879               area_below = MAX (area_below, 0);
5880             }
5881           else
5882             {
5883               /* two cases:
5884                * 1) row not visible
5885                * 2) row visible
5886                */
5887               gint dy;
5888               gint height = ROW_HEIGHT (tree_view, GTK_RBNODE_GET_HEIGHT (node));
5889
5890               dy = _gtk_rbtree_node_find_offset (tree, node);
5891
5892               if (dy >= tree_view->priv->vadjustment->value &&
5893                   dy + height <= (tree_view->priv->vadjustment->value
5894                                   + tree_view->priv->vadjustment->page_size))
5895                 {
5896                   /* row visible: keep the row at the same position */
5897                   area_above = dy - tree_view->priv->vadjustment->value;
5898                   area_below = (tree_view->priv->vadjustment->value +
5899                                 tree_view->priv->vadjustment->page_size)
5900                                - dy - height;
5901                 }
5902               else
5903                 {
5904                   /* row not visible */
5905                   if (dy >= 0
5906                       && dy + height <= tree_view->priv->vadjustment->page_size)
5907                     {
5908                       /* row at the beginning -- fixed */
5909                       area_above = dy;
5910                       area_below = tree_view->priv->vadjustment->page_size
5911                                    - area_above - height;
5912                     }
5913                   else if (dy >= (tree_view->priv->vadjustment->upper -
5914                                   tree_view->priv->vadjustment->page_size))
5915                     {
5916                       /* row at the end -- fixed */
5917                       area_above = dy - (tree_view->priv->vadjustment->upper -
5918                                    tree_view->priv->vadjustment->page_size);
5919                       area_below = tree_view->priv->vadjustment->page_size -
5920                                    area_above - height;
5921
5922                       if (area_below < 0)
5923                         {
5924                           area_above = tree_view->priv->vadjustment->page_size - height;
5925                           area_below = 0;
5926                         }
5927                     }
5928                   else
5929                     {
5930                       /* row somewhere in the middle, bring it to the top
5931                        * of the view
5932                        */
5933                       area_above = 0;
5934                       area_below = total_height - height;
5935                     }
5936                 }
5937             }
5938         }
5939       else
5940         /* the scroll to isn't valid; ignore it.
5941          */
5942         {
5943           if (tree_view->priv->scroll_to_path && !path)
5944             {
5945               gtk_tree_row_reference_free (tree_view->priv->scroll_to_path);
5946               tree_view->priv->scroll_to_path = NULL;
5947             }
5948           if (path)
5949             gtk_tree_path_free (path);
5950           path = NULL;
5951         }
5952     }
5953
5954   /* We didn't have a scroll_to set, so we just handle things normally
5955    */
5956   if (path == NULL)
5957     {
5958       gint offset;
5959
5960       offset = _gtk_rbtree_find_offset (tree_view->priv->tree,
5961                                         TREE_WINDOW_Y_TO_RBTREE_Y (tree_view, 0),
5962                                         &tree, &node);
5963       if (node == NULL)
5964         {
5965           /* In this case, nothing has been validated */
5966           path = gtk_tree_path_new_first ();
5967           _gtk_tree_view_find_node (tree_view, path, &tree, &node);
5968         }
5969       else
5970         {
5971           path = _gtk_tree_view_find_path (tree_view, tree, node);
5972           total_height += offset;
5973         }
5974
5975       gtk_tree_model_get_iter (tree_view->priv->model, &iter, path);
5976
5977       if (GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_INVALID) ||
5978           GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_COLUMN_INVALID))
5979         {
5980           _gtk_tree_view_queue_draw_node (tree_view, tree, node, NULL);
5981           if (validate_row (tree_view, tree, node, &iter, path))
5982             size_changed = TRUE;
5983         }
5984       area_above = 0;
5985       area_below = total_height - ROW_HEIGHT (tree_view, GTK_RBNODE_GET_HEIGHT (node));
5986     }
5987
5988   above_path = gtk_tree_path_copy (path);
5989
5990   /* if we do not validate any row above the new top_row, we will make sure
5991    * that the row immediately above top_row has been validated. (if we do not
5992    * do this, _gtk_rbtree_find_offset will find the row above top_row, because
5993    * when invalidated that row's height will be zero. and this will mess up
5994    * scrolling).
5995    */
5996   if (area_above == 0)
5997     {
5998       GtkRBTree *tmptree;
5999       GtkRBNode *tmpnode;
6000
6001       _gtk_tree_view_find_node (tree_view, above_path, &tmptree, &tmpnode);
6002       _gtk_rbtree_prev_full (tmptree, tmpnode, &tmptree, &tmpnode);
6003
6004       if (tmpnode)
6005         {
6006           GtkTreePath *tmppath;
6007           GtkTreeIter tmpiter;
6008
6009           tmppath = _gtk_tree_view_find_path (tree_view, tmptree, tmpnode);
6010           gtk_tree_model_get_iter (tree_view->priv->model, &tmpiter, tmppath);
6011
6012           if (GTK_RBNODE_FLAG_SET (tmpnode, GTK_RBNODE_INVALID) ||
6013               GTK_RBNODE_FLAG_SET (tmpnode, GTK_RBNODE_COLUMN_INVALID))
6014             {
6015               _gtk_tree_view_queue_draw_node (tree_view, tmptree, tmpnode, NULL);
6016               if (validate_row (tree_view, tmptree, tmpnode, &tmpiter, tmppath))
6017                 size_changed = TRUE;
6018             }
6019
6020           gtk_tree_path_free (tmppath);
6021         }
6022     }
6023
6024   /* Now, we walk forwards and backwards, measuring rows. Unfortunately,
6025    * backwards is much slower then forward, as there is no iter_prev function.
6026    * We go forwards first in case we run out of tree.  Then we go backwards to
6027    * fill out the top.
6028    */
6029   while (node && area_below > 0)
6030     {
6031       if (node->children)
6032         {
6033           GtkTreeIter parent = iter;
6034           gboolean has_child;
6035
6036           tree = node->children;
6037           node = tree->root;
6038
6039           g_assert (node != tree->nil);
6040
6041           while (node->left != tree->nil)
6042             node = node->left;
6043           has_child = gtk_tree_model_iter_children (tree_view->priv->model,
6044                                                     &iter,
6045                                                     &parent);
6046           TREE_VIEW_INTERNAL_ASSERT_VOID (has_child);
6047           gtk_tree_path_down (path);
6048         }
6049       else
6050         {
6051           gboolean done = FALSE;
6052           do
6053             {
6054               node = _gtk_rbtree_next (tree, node);
6055               if (node != NULL)
6056                 {
6057                   gboolean has_next = gtk_tree_model_iter_next (tree_view->priv->model, &iter);
6058                   done = TRUE;
6059                   gtk_tree_path_next (path);
6060
6061                   /* Sanity Check! */
6062                   TREE_VIEW_INTERNAL_ASSERT_VOID (has_next);
6063                 }
6064               else
6065                 {
6066                   GtkTreeIter parent_iter = iter;
6067                   gboolean has_parent;
6068
6069                   node = tree->parent_node;
6070                   tree = tree->parent_tree;
6071                   if (tree == NULL)
6072                     break;
6073                   has_parent = gtk_tree_model_iter_parent (tree_view->priv->model,
6074                                                            &iter,
6075                                                            &parent_iter);
6076                   gtk_tree_path_up (path);
6077
6078                   /* Sanity check */
6079                   TREE_VIEW_INTERNAL_ASSERT_VOID (has_parent);
6080                 }
6081             }
6082           while (!done);
6083         }
6084
6085       if (!node)
6086         break;
6087
6088       if (GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_INVALID) ||
6089           GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_COLUMN_INVALID))
6090         {
6091           _gtk_tree_view_queue_draw_node (tree_view, tree, node, NULL);
6092           if (validate_row (tree_view, tree, node, &iter, path))
6093               size_changed = TRUE;
6094         }
6095
6096       area_below -= ROW_HEIGHT (tree_view, GTK_RBNODE_GET_HEIGHT (node));
6097     }
6098   gtk_tree_path_free (path);
6099
6100   /* If we ran out of tree, and have extra area_below left, we need to add it
6101    * to area_above */
6102   if (area_below > 0)
6103     area_above += area_below;
6104
6105   _gtk_tree_view_find_node (tree_view, above_path, &tree, &node);
6106
6107   /* We walk backwards */
6108   while (area_above > 0)
6109     {
6110       _gtk_rbtree_prev_full (tree, node, &tree, &node);
6111
6112       /* Always find the new path in the tree.  We cannot just assume
6113        * a gtk_tree_path_prev() is enough here, as there might be children
6114        * in between this node and the previous sibling node.  If this
6115        * appears to be a performance hotspot in profiles, we can look into
6116        * intrigate logic for keeping path, node and iter in sync like
6117        * we do for forward walks.  (Which will be hard because of the lacking
6118        * iter_prev).
6119        */
6120
6121       if (node == NULL)
6122         break;
6123
6124       gtk_tree_path_free (above_path);
6125       above_path = _gtk_tree_view_find_path (tree_view, tree, node);
6126
6127       gtk_tree_model_get_iter (tree_view->priv->model, &iter, above_path);
6128
6129       if (GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_INVALID) ||
6130           GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_COLUMN_INVALID))
6131         {
6132           _gtk_tree_view_queue_draw_node (tree_view, tree, node, NULL);
6133           if (validate_row (tree_view, tree, node, &iter, above_path))
6134             size_changed = TRUE;
6135         }
6136       area_above -= ROW_HEIGHT (tree_view, GTK_RBNODE_GET_HEIGHT (node));
6137     }
6138
6139   /* if we scrolled to a path, we need to set the dy here,
6140    * and sync the top row accordingly
6141    */
6142   if (tree_view->priv->scroll_to_path)
6143     {
6144       gtk_tree_view_set_top_row (tree_view, above_path, -area_above);
6145       gtk_tree_view_top_row_to_dy (tree_view);
6146
6147       need_redraw = TRUE;
6148     }
6149   else if (tree_view->priv->height <= tree_view->priv->vadjustment->page_size)
6150     {
6151       /* when we are not scrolling, we should never set dy to something
6152        * else than zero. we update top_row to be in sync with dy = 0.
6153        */
6154       gtk_adjustment_set_value (GTK_ADJUSTMENT (tree_view->priv->vadjustment), 0);
6155       gtk_tree_view_dy_to_top_row (tree_view);
6156     }
6157   else if (tree_view->priv->vadjustment->value + tree_view->priv->vadjustment->page_size > tree_view->priv->height)
6158     {
6159       gtk_adjustment_set_value (GTK_ADJUSTMENT (tree_view->priv->vadjustment), tree_view->priv->height - tree_view->priv->vadjustment->page_size);
6160       gtk_tree_view_dy_to_top_row (tree_view);
6161     }
6162   else
6163     gtk_tree_view_top_row_to_dy (tree_view);
6164
6165   /* update width/height and queue a resize */
6166   if (size_changed)
6167     {
6168       GtkRequisition requisition;
6169
6170       /* We temporarily guess a size, under the assumption that it will be the
6171        * same when we get our next size_allocate.  If we don't do this, we'll be
6172        * in an inconsistent state if we call top_row_to_dy. */
6173
6174       gtk_widget_size_request (GTK_WIDGET (tree_view), &requisition);
6175       tree_view->priv->hadjustment->upper = MAX (tree_view->priv->hadjustment->upper, (gfloat)requisition.width);
6176       tree_view->priv->vadjustment->upper = MAX (tree_view->priv->vadjustment->upper, (gfloat)requisition.height);
6177       gtk_adjustment_changed (tree_view->priv->hadjustment);
6178       gtk_adjustment_changed (tree_view->priv->vadjustment);
6179       gtk_widget_queue_resize (GTK_WIDGET (tree_view));
6180     }
6181
6182   if (tree_view->priv->scroll_to_path)
6183     {
6184       gtk_tree_row_reference_free (tree_view->priv->scroll_to_path);
6185       tree_view->priv->scroll_to_path = NULL;
6186     }
6187
6188   if (above_path)
6189     gtk_tree_path_free (above_path);
6190
6191   if (tree_view->priv->scroll_to_column)
6192     {
6193       tree_view->priv->scroll_to_column = NULL;
6194     }
6195   if (need_redraw)
6196     gtk_widget_queue_draw (GTK_WIDGET (tree_view));
6197 }
6198
6199 static void
6200 initialize_fixed_height_mode (GtkTreeView *tree_view)
6201 {
6202   if (!tree_view->priv->tree)
6203     return;
6204
6205   if (tree_view->priv->fixed_height < 0)
6206     {
6207       GtkTreeIter iter;
6208       GtkTreePath *path;
6209
6210       GtkRBTree *tree = NULL;
6211       GtkRBNode *node = NULL;
6212
6213       tree = tree_view->priv->tree;
6214       node = tree->root;
6215
6216       path = _gtk_tree_view_find_path (tree_view, tree, node);
6217       gtk_tree_model_get_iter (tree_view->priv->model, &iter, path);
6218
6219       validate_row (tree_view, tree, node, &iter, path);
6220
6221       gtk_tree_path_free (path);
6222
6223       tree_view->priv->fixed_height = ROW_HEIGHT (tree_view, GTK_RBNODE_GET_HEIGHT (node));
6224     }
6225
6226    _gtk_rbtree_set_fixed_height (tree_view->priv->tree,
6227                                  tree_view->priv->fixed_height, TRUE);
6228 }
6229
6230 /* Our strategy for finding nodes to validate is a little convoluted.  We find
6231  * the left-most uninvalidated node.  We then try walking right, validating
6232  * nodes.  Once we find a valid node, we repeat the previous process of finding
6233  * the first invalid node.
6234  */
6235
6236 static gboolean
6237 do_validate_rows (GtkTreeView *tree_view, gboolean queue_resize)
6238 {
6239   GtkRBTree *tree = NULL;
6240   GtkRBNode *node = NULL;
6241   gboolean validated_area = FALSE;
6242   gint retval = TRUE;
6243   GtkTreePath *path = NULL;
6244   GtkTreeIter iter;
6245   GTimer *timer;
6246   gint i = 0;
6247
6248   gint prev_height = -1;
6249   gboolean fixed_height = TRUE;
6250
6251   g_assert (tree_view);
6252
6253   if (tree_view->priv->tree == NULL)
6254       return FALSE;
6255
6256   if (tree_view->priv->fixed_height_mode)
6257     {
6258       if (tree_view->priv->fixed_height < 0)
6259         initialize_fixed_height_mode (tree_view);
6260
6261       return FALSE;
6262     }
6263
6264   timer = g_timer_new ();
6265   g_timer_start (timer);
6266
6267   do
6268     {
6269       if (! GTK_RBNODE_FLAG_SET (tree_view->priv->tree->root, GTK_RBNODE_DESCENDANTS_INVALID))
6270         {
6271           retval = FALSE;
6272           goto done;
6273         }
6274
6275       if (path != NULL)
6276         {
6277           node = _gtk_rbtree_next (tree, node);
6278           if (node != NULL)
6279             {
6280               TREE_VIEW_INTERNAL_ASSERT (gtk_tree_model_iter_next (tree_view->priv->model, &iter), FALSE);
6281               gtk_tree_path_next (path);
6282             }
6283           else
6284             {
6285               gtk_tree_path_free (path);
6286               path = NULL;
6287             }
6288         }
6289
6290       if (path == NULL)
6291         {
6292           tree = tree_view->priv->tree;
6293           node = tree_view->priv->tree->root;
6294
6295           g_assert (GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_DESCENDANTS_INVALID));
6296
6297           do
6298             {
6299               if (node->left != tree->nil &&
6300                   GTK_RBNODE_FLAG_SET (node->left, GTK_RBNODE_DESCENDANTS_INVALID))
6301                 {
6302                   node = node->left;
6303                 }
6304               else if (node->right != tree->nil &&
6305                        GTK_RBNODE_FLAG_SET (node->right, GTK_RBNODE_DESCENDANTS_INVALID))
6306                 {
6307                   node = node->right;
6308                 }
6309               else if (GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_INVALID) ||
6310                        GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_COLUMN_INVALID))
6311                 {
6312                   break;
6313                 }
6314               else if (node->children != NULL)
6315                 {
6316                   tree = node->children;
6317                   node = tree->root;
6318                 }
6319               else
6320                 /* RBTree corruption!  All bad */
6321                 g_assert_not_reached ();
6322             }
6323           while (TRUE);
6324           path = _gtk_tree_view_find_path (tree_view, tree, node);
6325           gtk_tree_model_get_iter (tree_view->priv->model, &iter, path);
6326         }
6327
6328       validated_area = validate_row (tree_view, tree, node, &iter, path) ||
6329                        validated_area;
6330
6331       if (!tree_view->priv->fixed_height_check)
6332         {
6333           gint height;
6334
6335           height = ROW_HEIGHT (tree_view, GTK_RBNODE_GET_HEIGHT (node));
6336           if (prev_height < 0)
6337             prev_height = height;
6338           else if (prev_height != height)
6339             fixed_height = FALSE;
6340         }
6341
6342       i++;
6343     }
6344   while (g_timer_elapsed (timer, NULL) < GTK_TREE_VIEW_TIME_MS_PER_IDLE / 1000.);
6345
6346   if (!tree_view->priv->fixed_height_check)
6347    {
6348      if (fixed_height)
6349        _gtk_rbtree_set_fixed_height (tree_view->priv->tree, prev_height, FALSE);
6350
6351      tree_view->priv->fixed_height_check = 1;
6352    }
6353
6354  done:
6355   if (validated_area)
6356     {
6357       GtkRequisition requisition;
6358       /* We temporarily guess a size, under the assumption that it will be the
6359        * same when we get our next size_allocate.  If we don't do this, we'll be
6360        * in an inconsistent state when we call top_row_to_dy. */
6361
6362       gtk_widget_size_request (GTK_WIDGET (tree_view), &requisition);
6363       tree_view->priv->hadjustment->upper = MAX (tree_view->priv->hadjustment->upper, (gfloat)requisition.width);
6364       tree_view->priv->vadjustment->upper = MAX (tree_view->priv->vadjustment->upper, (gfloat)requisition.height);
6365       gtk_adjustment_changed (tree_view->priv->hadjustment);
6366       gtk_adjustment_changed (tree_view->priv->vadjustment);
6367
6368       if (queue_resize)
6369         gtk_widget_queue_resize (GTK_WIDGET (tree_view));
6370     }
6371
6372   if (path) gtk_tree_path_free (path);
6373   g_timer_destroy (timer);
6374
6375   return retval;
6376 }
6377
6378 static gboolean
6379 validate_rows (GtkTreeView *tree_view)
6380 {
6381   gboolean retval;
6382
6383   retval = do_validate_rows (tree_view, TRUE);
6384
6385   if (! retval && tree_view->priv->validate_rows_timer)
6386     {
6387       g_source_remove (tree_view->priv->validate_rows_timer);
6388       tree_view->priv->validate_rows_timer = 0;
6389     }
6390
6391   return retval;
6392 }
6393
6394 static gboolean
6395 validate_rows_handler (GtkTreeView *tree_view)
6396 {
6397   gboolean retval;
6398
6399   retval = do_validate_rows (tree_view, TRUE);
6400   if (! retval && tree_view->priv->validate_rows_timer)
6401     {
6402       g_source_remove (tree_view->priv->validate_rows_timer);
6403       tree_view->priv->validate_rows_timer = 0;
6404     }
6405
6406   return retval;
6407 }
6408
6409 static gboolean
6410 do_presize_handler (GtkTreeView *tree_view)
6411 {
6412   if (tree_view->priv->mark_rows_col_dirty)
6413     {
6414       if (tree_view->priv->tree)
6415         _gtk_rbtree_column_invalid (tree_view->priv->tree);
6416       tree_view->priv->mark_rows_col_dirty = FALSE;
6417     }
6418   validate_visible_area (tree_view);
6419   tree_view->priv->presize_handler_timer = 0;
6420
6421   if (tree_view->priv->fixed_height_mode)
6422     {
6423       GtkRequisition requisition;
6424
6425       gtk_widget_size_request (GTK_WIDGET (tree_view), &requisition);
6426
6427       tree_view->priv->hadjustment->upper = MAX (tree_view->priv->hadjustment->upper, (gfloat)requisition.width);
6428       tree_view->priv->vadjustment->upper = MAX (tree_view->priv->vadjustment->upper, (gfloat)requisition.height);
6429       gtk_adjustment_changed (tree_view->priv->hadjustment);
6430       gtk_adjustment_changed (tree_view->priv->vadjustment);
6431       gtk_widget_queue_resize (GTK_WIDGET (tree_view));
6432     }
6433
6434   return FALSE;
6435 }
6436
6437 static gboolean
6438 presize_handler_callback (gpointer data)
6439 {
6440   do_presize_handler (GTK_TREE_VIEW (data));
6441
6442   return FALSE;
6443 }
6444
6445 static void
6446 install_presize_handler (GtkTreeView *tree_view)
6447 {
6448   if (! gtk_widget_get_realized (GTK_WIDGET (tree_view)))
6449     return;
6450
6451   if (! tree_view->priv->presize_handler_timer)
6452     {
6453       tree_view->priv->presize_handler_timer =
6454         gdk_threads_add_idle_full (GTK_PRIORITY_RESIZE - 2, presize_handler_callback, tree_view, NULL);
6455     }
6456   if (! tree_view->priv->validate_rows_timer)
6457     {
6458       tree_view->priv->validate_rows_timer =
6459         gdk_threads_add_idle_full (GTK_TREE_VIEW_PRIORITY_VALIDATE, (GSourceFunc) validate_rows_handler, tree_view, NULL);
6460     }
6461 }
6462
6463 static gboolean
6464 scroll_sync_handler (GtkTreeView *tree_view)
6465 {
6466   if (tree_view->priv->height <= tree_view->priv->vadjustment->page_size)
6467     gtk_adjustment_set_value (GTK_ADJUSTMENT (tree_view->priv->vadjustment), 0);
6468   else if (gtk_tree_row_reference_valid (tree_view->priv->top_row))
6469     gtk_tree_view_top_row_to_dy (tree_view);
6470   else
6471     gtk_tree_view_dy_to_top_row (tree_view);
6472
6473   tree_view->priv->scroll_sync_timer = 0;
6474
6475   return FALSE;
6476 }
6477
6478 static void
6479 install_scroll_sync_handler (GtkTreeView *tree_view)
6480 {
6481   if (!gtk_widget_get_realized (GTK_WIDGET (tree_view)))
6482     return;
6483
6484   if (!tree_view->priv->scroll_sync_timer)
6485     {
6486       tree_view->priv->scroll_sync_timer =
6487         gdk_threads_add_idle_full (GTK_TREE_VIEW_PRIORITY_SCROLL_SYNC, (GSourceFunc) scroll_sync_handler, tree_view, NULL);
6488     }
6489 }
6490
6491 static void
6492 gtk_tree_view_set_top_row (GtkTreeView *tree_view,
6493                            GtkTreePath *path,
6494                            gint         offset)
6495 {
6496   gtk_tree_row_reference_free (tree_view->priv->top_row);
6497
6498   if (!path)
6499     {
6500       tree_view->priv->top_row = NULL;
6501       tree_view->priv->top_row_dy = 0;
6502     }
6503   else
6504     {
6505       tree_view->priv->top_row = gtk_tree_row_reference_new_proxy (G_OBJECT (tree_view), tree_view->priv->model, path);
6506       tree_view->priv->top_row_dy = offset;
6507     }
6508 }
6509
6510 /* Always call this iff dy is in the visible range.  If the tree is empty, then
6511  * it's set to be NULL, and top_row_dy is 0;
6512  */
6513 static void
6514 gtk_tree_view_dy_to_top_row (GtkTreeView *tree_view)
6515 {
6516   gint offset;
6517   GtkTreePath *path;
6518   GtkRBTree *tree;
6519   GtkRBNode *node;
6520
6521   if (tree_view->priv->tree == NULL)
6522     {
6523       gtk_tree_view_set_top_row (tree_view, NULL, 0);
6524     }
6525   else
6526     {
6527       offset = _gtk_rbtree_find_offset (tree_view->priv->tree,
6528                                         tree_view->priv->dy,
6529                                         &tree, &node);
6530
6531       if (tree == NULL)
6532         {
6533           gtk_tree_view_set_top_row (tree_view, NULL, 0);
6534         }
6535       else
6536         {
6537           path = _gtk_tree_view_find_path (tree_view, tree, node);
6538           gtk_tree_view_set_top_row (tree_view, path, offset);
6539           gtk_tree_path_free (path);
6540         }
6541     }
6542 }
6543
6544 static void
6545 gtk_tree_view_top_row_to_dy (GtkTreeView *tree_view)
6546 {
6547   GtkTreePath *path;
6548   GtkRBTree *tree;
6549   GtkRBNode *node;
6550   int new_dy;
6551
6552   /* Avoid recursive calls */
6553   if (tree_view->priv->in_top_row_to_dy)
6554     return;
6555
6556   if (tree_view->priv->top_row)
6557     path = gtk_tree_row_reference_get_path (tree_view->priv->top_row);
6558   else
6559     path = NULL;
6560
6561   if (!path)
6562     tree = NULL;
6563   else
6564     _gtk_tree_view_find_node (tree_view, path, &tree, &node);
6565
6566   if (path)
6567     gtk_tree_path_free (path);
6568
6569   if (tree == NULL)
6570     {
6571       /* keep dy and set new toprow */
6572       gtk_tree_row_reference_free (tree_view->priv->top_row);
6573       tree_view->priv->top_row = NULL;
6574       tree_view->priv->top_row_dy = 0;
6575       /* DO NOT install the idle handler */
6576       gtk_tree_view_dy_to_top_row (tree_view);
6577       return;
6578     }
6579
6580   if (ROW_HEIGHT (tree_view, BACKGROUND_HEIGHT (node))
6581       < tree_view->priv->top_row_dy)
6582     {
6583       /* new top row -- do NOT install the idle handler */
6584       gtk_tree_view_dy_to_top_row (tree_view);
6585       return;
6586     }
6587
6588   new_dy = _gtk_rbtree_node_find_offset (tree, node);
6589   new_dy += tree_view->priv->top_row_dy;
6590
6591   if (new_dy + tree_view->priv->vadjustment->page_size > tree_view->priv->height)
6592     new_dy = tree_view->priv->height - tree_view->priv->vadjustment->page_size;
6593
6594   new_dy = MAX (0, new_dy);
6595
6596   tree_view->priv->in_top_row_to_dy = TRUE;
6597   gtk_adjustment_set_value (tree_view->priv->vadjustment, (gdouble)new_dy);
6598   tree_view->priv->in_top_row_to_dy = FALSE;
6599 }
6600
6601
6602 void
6603 _gtk_tree_view_install_mark_rows_col_dirty (GtkTreeView *tree_view)
6604 {
6605   tree_view->priv->mark_rows_col_dirty = TRUE;
6606
6607   install_presize_handler (tree_view);
6608 }
6609
6610 /*
6611  * This function works synchronously (due to the while (validate_rows...)
6612  * loop).
6613  *
6614  * There was a check for column_type != GTK_TREE_VIEW_COLUMN_AUTOSIZE
6615  * here. You now need to check that yourself.
6616  */
6617 void
6618 _gtk_tree_view_column_autosize (GtkTreeView *tree_view,
6619                                 GtkTreeViewColumn *column)
6620 {
6621   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
6622   g_return_if_fail (GTK_IS_TREE_VIEW_COLUMN (column));
6623
6624   _gtk_tree_view_column_cell_set_dirty (column, FALSE);
6625
6626   do_presize_handler (tree_view);
6627   while (validate_rows (tree_view));
6628
6629   gtk_widget_queue_resize (GTK_WIDGET (tree_view));
6630 }
6631
6632 /* Drag-and-drop */
6633
6634 static void
6635 set_source_row (GdkDragContext *context,
6636                 GtkTreeModel   *model,
6637                 GtkTreePath    *source_row)
6638 {
6639   g_object_set_data_full (G_OBJECT (context),
6640                           I_("gtk-tree-view-source-row"),
6641                           source_row ? gtk_tree_row_reference_new (model, source_row) : NULL,
6642                           (GDestroyNotify) (source_row ? gtk_tree_row_reference_free : NULL));
6643 }
6644
6645 static GtkTreePath*
6646 get_source_row (GdkDragContext *context)
6647 {
6648   GtkTreeRowReference *ref =
6649     g_object_get_data (G_OBJECT (context), "gtk-tree-view-source-row");
6650
6651   if (ref)
6652     return gtk_tree_row_reference_get_path (ref);
6653   else
6654     return NULL;
6655 }
6656
6657 typedef struct
6658 {
6659   GtkTreeRowReference *dest_row;
6660   guint                path_down_mode   : 1;
6661   guint                empty_view_drop  : 1;
6662   guint                drop_append_mode : 1;
6663 }
6664 DestRow;
6665
6666 static void
6667 dest_row_free (gpointer data)
6668 {
6669   DestRow *dr = (DestRow *)data;
6670
6671   gtk_tree_row_reference_free (dr->dest_row);
6672   g_slice_free (DestRow, dr);
6673 }
6674
6675 static void
6676 set_dest_row (GdkDragContext *context,
6677               GtkTreeModel   *model,
6678               GtkTreePath    *dest_row,
6679               gboolean        path_down_mode,
6680               gboolean        empty_view_drop,
6681               gboolean        drop_append_mode)
6682 {
6683   DestRow *dr;
6684
6685   if (!dest_row)
6686     {
6687       g_object_set_data_full (G_OBJECT (context), I_("gtk-tree-view-dest-row"),
6688                               NULL, NULL);
6689       return;
6690     }
6691
6692   dr = g_slice_new (DestRow);
6693
6694   dr->dest_row = gtk_tree_row_reference_new (model, dest_row);
6695   dr->path_down_mode = path_down_mode != FALSE;
6696   dr->empty_view_drop = empty_view_drop != FALSE;
6697   dr->drop_append_mode = drop_append_mode != FALSE;
6698
6699   g_object_set_data_full (G_OBJECT (context), I_("gtk-tree-view-dest-row"),
6700                           dr, (GDestroyNotify) dest_row_free);
6701 }
6702
6703 static GtkTreePath*
6704 get_dest_row (GdkDragContext *context,
6705               gboolean       *path_down_mode)
6706 {
6707   DestRow *dr =
6708     g_object_get_data (G_OBJECT (context), "gtk-tree-view-dest-row");
6709
6710   if (dr)
6711     {
6712       GtkTreePath *path = NULL;
6713
6714       if (path_down_mode)
6715         *path_down_mode = dr->path_down_mode;
6716
6717       if (dr->dest_row)
6718         path = gtk_tree_row_reference_get_path (dr->dest_row);
6719       else if (dr->empty_view_drop)
6720         path = gtk_tree_path_new_from_indices (0, -1);
6721       else
6722         path = NULL;
6723
6724       if (path && dr->drop_append_mode)
6725         gtk_tree_path_next (path);
6726
6727       return path;
6728     }
6729   else
6730     return NULL;
6731 }
6732
6733 /* Get/set whether drag_motion requested the drag data and
6734  * drag_data_received should thus not actually insert the data,
6735  * since the data doesn't result from a drop.
6736  */
6737 static void
6738 set_status_pending (GdkDragContext *context,
6739                     GdkDragAction   suggested_action)
6740 {
6741   g_object_set_data (G_OBJECT (context),
6742                      I_("gtk-tree-view-status-pending"),
6743                      GINT_TO_POINTER (suggested_action));
6744 }
6745
6746 static GdkDragAction
6747 get_status_pending (GdkDragContext *context)
6748 {
6749   return GPOINTER_TO_INT (g_object_get_data (G_OBJECT (context),
6750                                              "gtk-tree-view-status-pending"));
6751 }
6752
6753 static TreeViewDragInfo*
6754 get_info (GtkTreeView *tree_view)
6755 {
6756   return g_object_get_data (G_OBJECT (tree_view), "gtk-tree-view-drag-info");
6757 }
6758
6759 static void
6760 destroy_info (TreeViewDragInfo *di)
6761 {
6762   g_slice_free (TreeViewDragInfo, di);
6763 }
6764
6765 static TreeViewDragInfo*
6766 ensure_info (GtkTreeView *tree_view)
6767 {
6768   TreeViewDragInfo *di;
6769
6770   di = get_info (tree_view);
6771
6772   if (di == NULL)
6773     {
6774       di = g_slice_new0 (TreeViewDragInfo);
6775
6776       g_object_set_data_full (G_OBJECT (tree_view),
6777                               I_("gtk-tree-view-drag-info"),
6778                               di,
6779                               (GDestroyNotify) destroy_info);
6780     }
6781
6782   return di;
6783 }
6784
6785 static void
6786 remove_info (GtkTreeView *tree_view)
6787 {
6788   g_object_set_data (G_OBJECT (tree_view), I_("gtk-tree-view-drag-info"), NULL);
6789 }
6790
6791 #if 0
6792 static gint
6793 drag_scan_timeout (gpointer data)
6794 {
6795   GtkTreeView *tree_view;
6796   gint x, y;
6797   GdkModifierType state;
6798   GtkTreePath *path = NULL;
6799   GtkTreeViewColumn *column = NULL;
6800   GdkRectangle visible_rect;
6801
6802   GDK_THREADS_ENTER ();
6803
6804   tree_view = GTK_TREE_VIEW (data);
6805
6806   gdk_window_get_pointer (tree_view->priv->bin_window,
6807                           &x, &y, &state);
6808
6809   gtk_tree_view_get_visible_rect (tree_view, &visible_rect);
6810
6811   /* See if we are near the edge. */
6812   if ((x - visible_rect.x) < SCROLL_EDGE_SIZE ||
6813       (visible_rect.x + visible_rect.width - x) < SCROLL_EDGE_SIZE ||
6814       (y - visible_rect.y) < SCROLL_EDGE_SIZE ||
6815       (visible_rect.y + visible_rect.height - y) < SCROLL_EDGE_SIZE)
6816     {
6817       gtk_tree_view_get_path_at_pos (tree_view,
6818                                      tree_view->priv->bin_window,
6819                                      x, y,
6820                                      &path,
6821                                      &column,
6822                                      NULL,
6823                                      NULL);
6824
6825       if (path != NULL)
6826         {
6827           gtk_tree_view_scroll_to_cell (tree_view,
6828                                         path,
6829                                         column,
6830                                         TRUE,
6831                                         0.5, 0.5);
6832
6833           gtk_tree_path_free (path);
6834         }
6835     }
6836
6837   GDK_THREADS_LEAVE ();
6838
6839   return TRUE;
6840 }
6841 #endif /* 0 */
6842
6843 static void
6844 add_scroll_timeout (GtkTreeView *tree_view)
6845 {
6846   if (tree_view->priv->scroll_timeout == 0)
6847     {
6848       tree_view->priv->scroll_timeout =
6849         gdk_threads_add_timeout (150, scroll_row_timeout, tree_view);
6850     }
6851 }
6852
6853 static void
6854 remove_scroll_timeout (GtkTreeView *tree_view)
6855 {
6856   if (tree_view->priv->scroll_timeout != 0)
6857     {
6858       g_source_remove (tree_view->priv->scroll_timeout);
6859       tree_view->priv->scroll_timeout = 0;
6860     }
6861 }
6862
6863 static gboolean
6864 check_model_dnd (GtkTreeModel *model,
6865                  GType         required_iface,
6866                  const gchar  *signal)
6867 {
6868   if (model == NULL || !G_TYPE_CHECK_INSTANCE_TYPE ((model), required_iface))
6869     {
6870       g_warning ("You must override the default '%s' handler "
6871                  "on GtkTreeView when using models that don't support "
6872                  "the %s interface and enabling drag-and-drop. The simplest way to do this "
6873                  "is to connect to '%s' and call "
6874                  "g_signal_stop_emission_by_name() in your signal handler to prevent "
6875                  "the default handler from running. Look at the source code "
6876                  "for the default handler in gtktreeview.c to get an idea what "
6877                  "your handler should do. (gtktreeview.c is in the GTK source "
6878                  "code.) If you're using GTK from a language other than C, "
6879                  "there may be a more natural way to override default handlers, e.g. via derivation.",
6880                  signal, g_type_name (required_iface), signal);
6881       return FALSE;
6882     }
6883   else
6884     return TRUE;
6885 }
6886
6887 static void
6888 remove_open_timeout (GtkTreeView *tree_view)
6889 {
6890   if (tree_view->priv->open_dest_timeout != 0)
6891     {
6892       g_source_remove (tree_view->priv->open_dest_timeout);
6893       tree_view->priv->open_dest_timeout = 0;
6894     }
6895 }
6896
6897
6898 static gint
6899 open_row_timeout (gpointer data)
6900 {
6901   GtkTreeView *tree_view = data;
6902   GtkTreePath *dest_path = NULL;
6903   GtkTreeViewDropPosition pos;
6904   gboolean result = FALSE;
6905
6906   gtk_tree_view_get_drag_dest_row (tree_view,
6907                                    &dest_path,
6908                                    &pos);
6909
6910   if (dest_path &&
6911       (pos == GTK_TREE_VIEW_DROP_INTO_OR_AFTER ||
6912        pos == GTK_TREE_VIEW_DROP_INTO_OR_BEFORE))
6913     {
6914       gtk_tree_view_expand_row (tree_view, dest_path, FALSE);
6915       tree_view->priv->open_dest_timeout = 0;
6916
6917       gtk_tree_path_free (dest_path);
6918     }
6919   else
6920     {
6921       if (dest_path)
6922         gtk_tree_path_free (dest_path);
6923
6924       result = TRUE;
6925     }
6926
6927   return result;
6928 }
6929
6930 static gboolean
6931 scroll_row_timeout (gpointer data)
6932 {
6933   GtkTreeView *tree_view = data;
6934
6935   gtk_tree_view_vertical_autoscroll (tree_view);
6936
6937   if (tree_view->priv->rubber_band_status == RUBBER_BAND_ACTIVE)
6938     gtk_tree_view_update_rubber_band (tree_view);
6939
6940   return TRUE;
6941 }
6942
6943 /* Returns TRUE if event should not be propagated to parent widgets */
6944 static gboolean
6945 set_destination_row (GtkTreeView    *tree_view,
6946                      GdkDragContext *context,
6947                      /* coordinates relative to the widget */
6948                      gint            x,
6949                      gint            y,
6950                      GdkDragAction  *suggested_action,
6951                      GdkAtom        *target)
6952 {
6953   GtkTreePath *path = NULL;
6954   GtkTreeViewDropPosition pos;
6955   GtkTreeViewDropPosition old_pos;
6956   TreeViewDragInfo *di;
6957   GtkWidget *widget;
6958   GtkTreePath *old_dest_path = NULL;
6959   gboolean can_drop = FALSE;
6960
6961   *suggested_action = 0;
6962   *target = GDK_NONE;
6963
6964   widget = GTK_WIDGET (tree_view);
6965
6966   di = get_info (tree_view);
6967
6968   if (di == NULL || y - TREE_VIEW_HEADER_HEIGHT (tree_view) < 0)
6969     {
6970       /* someone unset us as a drag dest, note that if
6971        * we return FALSE drag_leave isn't called
6972        */
6973
6974       gtk_tree_view_set_drag_dest_row (tree_view,
6975                                        NULL,
6976                                        GTK_TREE_VIEW_DROP_BEFORE);
6977
6978       remove_scroll_timeout (GTK_TREE_VIEW (widget));
6979       remove_open_timeout (GTK_TREE_VIEW (widget));
6980
6981       return FALSE; /* no longer a drop site */
6982     }
6983
6984   *target = gtk_drag_dest_find_target (widget, context,
6985                                        gtk_drag_dest_get_target_list (widget));
6986   if (*target == GDK_NONE)
6987     {
6988       return FALSE;
6989     }
6990
6991   if (!gtk_tree_view_get_dest_row_at_pos (tree_view,
6992                                           x, y,
6993                                           &path,
6994                                           &pos))
6995     {
6996       gint n_children;
6997       GtkTreeModel *model;
6998
6999       remove_open_timeout (tree_view);
7000
7001       /* the row got dropped on empty space, let's setup a special case
7002        */
7003
7004       if (path)
7005         gtk_tree_path_free (path);
7006
7007       model = gtk_tree_view_get_model (tree_view);
7008
7009       n_children = gtk_tree_model_iter_n_children (model, NULL);
7010       if (n_children)
7011         {
7012           pos = GTK_TREE_VIEW_DROP_AFTER;
7013           path = gtk_tree_path_new_from_indices (n_children - 1, -1);
7014         }
7015       else
7016         {
7017           pos = GTK_TREE_VIEW_DROP_BEFORE;
7018           path = gtk_tree_path_new_from_indices (0, -1);
7019         }
7020
7021       can_drop = TRUE;
7022
7023       goto out;
7024     }
7025
7026   g_assert (path);
7027
7028   /* If we left the current row's "open" zone, unset the timeout for
7029    * opening the row
7030    */
7031   gtk_tree_view_get_drag_dest_row (tree_view,
7032                                    &old_dest_path,
7033                                    &old_pos);
7034
7035   if (old_dest_path &&
7036       (gtk_tree_path_compare (path, old_dest_path) != 0 ||
7037        !(pos == GTK_TREE_VIEW_DROP_INTO_OR_AFTER ||
7038          pos == GTK_TREE_VIEW_DROP_INTO_OR_BEFORE)))
7039     remove_open_timeout (tree_view);
7040
7041   if (old_dest_path)
7042     gtk_tree_path_free (old_dest_path);
7043
7044   if (TRUE /* FIXME if the location droppable predicate */)
7045     {
7046       can_drop = TRUE;
7047     }
7048
7049 out:
7050   if (can_drop)
7051     {
7052       GtkWidget *source_widget;
7053
7054       *suggested_action = context->suggested_action;
7055       source_widget = gtk_drag_get_source_widget (context);
7056
7057       if (source_widget == widget)
7058         {
7059           /* Default to MOVE, unless the user has
7060            * pressed ctrl or shift to affect available actions
7061            */
7062           if ((context->actions & GDK_ACTION_MOVE) != 0)
7063             *suggested_action = GDK_ACTION_MOVE;
7064         }
7065
7066       gtk_tree_view_set_drag_dest_row (GTK_TREE_VIEW (widget),
7067                                        path, pos);
7068     }
7069   else
7070     {
7071       /* can't drop here */
7072       remove_open_timeout (tree_view);
7073
7074       gtk_tree_view_set_drag_dest_row (GTK_TREE_VIEW (widget),
7075                                        NULL,
7076                                        GTK_TREE_VIEW_DROP_BEFORE);
7077     }
7078
7079   if (path)
7080     gtk_tree_path_free (path);
7081
7082   return TRUE;
7083 }
7084
7085 static GtkTreePath*
7086 get_logical_dest_row (GtkTreeView *tree_view,
7087                       gboolean    *path_down_mode,
7088                       gboolean    *drop_append_mode)
7089 {
7090   /* adjust path to point to the row the drop goes in front of */
7091   GtkTreePath *path = NULL;
7092   GtkTreeViewDropPosition pos;
7093
7094   g_return_val_if_fail (path_down_mode != NULL, NULL);
7095   g_return_val_if_fail (drop_append_mode != NULL, NULL);
7096
7097   *path_down_mode = FALSE;
7098   *drop_append_mode = 0;
7099
7100   gtk_tree_view_get_drag_dest_row (tree_view, &path, &pos);
7101
7102   if (path == NULL)
7103     return NULL;
7104
7105   if (pos == GTK_TREE_VIEW_DROP_BEFORE)
7106     ; /* do nothing */
7107   else if (pos == GTK_TREE_VIEW_DROP_INTO_OR_BEFORE ||
7108            pos == GTK_TREE_VIEW_DROP_INTO_OR_AFTER)
7109     *path_down_mode = TRUE;
7110   else
7111     {
7112       GtkTreeIter iter;
7113       GtkTreeModel *model = gtk_tree_view_get_model (tree_view);
7114
7115       g_assert (pos == GTK_TREE_VIEW_DROP_AFTER);
7116
7117       if (!gtk_tree_model_get_iter (model, &iter, path) ||
7118           !gtk_tree_model_iter_next (model, &iter))
7119         *drop_append_mode = 1;
7120       else
7121         {
7122           *drop_append_mode = 0;
7123           gtk_tree_path_next (path);
7124         }
7125     }
7126
7127   return path;
7128 }
7129
7130 static gboolean
7131 gtk_tree_view_maybe_begin_dragging_row (GtkTreeView      *tree_view,
7132                                         GdkEventMotion   *event)
7133 {
7134   GtkWidget *widget = GTK_WIDGET (tree_view);
7135   GdkDragContext *context;
7136   TreeViewDragInfo *di;
7137   GtkTreePath *path = NULL;
7138   gint button;
7139   gint cell_x, cell_y;
7140   GtkTreeModel *model;
7141   gboolean retval = FALSE;
7142
7143   di = get_info (tree_view);
7144
7145   if (di == NULL || !di->source_set)
7146     goto out;
7147
7148   if (tree_view->priv->pressed_button < 0)
7149     goto out;
7150
7151   if (!gtk_drag_check_threshold (widget,
7152                                  tree_view->priv->press_start_x,
7153                                  tree_view->priv->press_start_y,
7154                                  event->x, event->y))
7155     goto out;
7156
7157   model = gtk_tree_view_get_model (tree_view);
7158
7159   if (model == NULL)
7160     goto out;
7161
7162   button = tree_view->priv->pressed_button;
7163   tree_view->priv->pressed_button = -1;
7164
7165   gtk_tree_view_get_path_at_pos (tree_view,
7166                                  tree_view->priv->press_start_x,
7167                                  tree_view->priv->press_start_y,
7168                                  &path,
7169                                  NULL,
7170                                  &cell_x,
7171                                  &cell_y);
7172
7173   if (path == NULL)
7174     goto out;
7175
7176   if (!GTK_IS_TREE_DRAG_SOURCE (model) ||
7177       !gtk_tree_drag_source_row_draggable (GTK_TREE_DRAG_SOURCE (model),
7178                                            path))
7179     goto out;
7180
7181   if (!(GDK_BUTTON1_MASK << (button - 1) & di->start_button_mask))
7182     goto out;
7183
7184   /* Now we can begin the drag */
7185
7186   retval = TRUE;
7187
7188   context = gtk_drag_begin (widget,
7189                             gtk_drag_source_get_target_list (widget),
7190                             di->source_actions,
7191                             button,
7192                             (GdkEvent*)event);
7193
7194   set_source_row (context, model, path);
7195
7196  out:
7197   if (path)
7198     gtk_tree_path_free (path);
7199
7200   return retval;
7201 }
7202
7203
7204 static void
7205 gtk_tree_view_drag_begin (GtkWidget      *widget,
7206                           GdkDragContext *context)
7207 {
7208   GtkTreeView *tree_view;
7209   GtkTreePath *path = NULL;
7210   gint cell_x, cell_y;
7211   GdkPixmap *row_pix;
7212   TreeViewDragInfo *di;
7213
7214   tree_view = GTK_TREE_VIEW (widget);
7215
7216   /* if the user uses a custom DND source impl, we don't set the icon here */
7217   di = get_info (tree_view);
7218
7219   if (di == NULL || !di->source_set)
7220     return;
7221
7222   gtk_tree_view_get_path_at_pos (tree_view,
7223                                  tree_view->priv->press_start_x,
7224                                  tree_view->priv->press_start_y,
7225                                  &path,
7226                                  NULL,
7227                                  &cell_x,
7228                                  &cell_y);
7229
7230   g_return_if_fail (path != NULL);
7231
7232   row_pix = gtk_tree_view_create_row_drag_icon (tree_view,
7233                                                 path);
7234
7235   gtk_drag_set_icon_pixmap (context,
7236                             gdk_drawable_get_colormap (row_pix),
7237                             row_pix,
7238                             NULL,
7239                             /* the + 1 is for the black border in the icon */
7240                             tree_view->priv->press_start_x + 1,
7241                             cell_y + 1);
7242
7243   g_object_unref (row_pix);
7244   gtk_tree_path_free (path);
7245 }
7246
7247 static void
7248 gtk_tree_view_drag_end (GtkWidget      *widget,
7249                         GdkDragContext *context)
7250 {
7251   /* do nothing */
7252 }
7253
7254 /* Default signal implementations for the drag signals */
7255 static void
7256 gtk_tree_view_drag_data_get (GtkWidget        *widget,
7257                              GdkDragContext   *context,
7258                              GtkSelectionData *selection_data,
7259                              guint             info,
7260                              guint             time)
7261 {
7262   GtkTreeView *tree_view;
7263   GtkTreeModel *model;
7264   TreeViewDragInfo *di;
7265   GtkTreePath *source_row;
7266
7267   tree_view = GTK_TREE_VIEW (widget);
7268
7269   model = gtk_tree_view_get_model (tree_view);
7270
7271   if (model == NULL)
7272     return;
7273
7274   di = get_info (GTK_TREE_VIEW (widget));
7275
7276   if (di == NULL)
7277     return;
7278
7279   source_row = get_source_row (context);
7280
7281   if (source_row == NULL)
7282     return;
7283
7284   /* We can implement the GTK_TREE_MODEL_ROW target generically for
7285    * any model; for DragSource models there are some other targets
7286    * we also support.
7287    */
7288
7289   if (GTK_IS_TREE_DRAG_SOURCE (model) &&
7290       gtk_tree_drag_source_drag_data_get (GTK_TREE_DRAG_SOURCE (model),
7291                                           source_row,
7292                                           selection_data))
7293     goto done;
7294
7295   /* If drag_data_get does nothing, try providing row data. */
7296   if (selection_data->target == gdk_atom_intern_static_string ("GTK_TREE_MODEL_ROW"))
7297     {
7298       gtk_tree_set_row_drag_data (selection_data,
7299                                   model,
7300                                   source_row);
7301     }
7302
7303  done:
7304   gtk_tree_path_free (source_row);
7305 }
7306
7307
7308 static void
7309 gtk_tree_view_drag_data_delete (GtkWidget      *widget,
7310                                 GdkDragContext *context)
7311 {
7312   TreeViewDragInfo *di;
7313   GtkTreeModel *model;
7314   GtkTreeView *tree_view;
7315   GtkTreePath *source_row;
7316
7317   tree_view = GTK_TREE_VIEW (widget);
7318   model = gtk_tree_view_get_model (tree_view);
7319
7320   if (!check_model_dnd (model, GTK_TYPE_TREE_DRAG_SOURCE, "drag_data_delete"))
7321     return;
7322
7323   di = get_info (tree_view);
7324
7325   if (di == NULL)
7326     return;
7327
7328   source_row = get_source_row (context);
7329
7330   if (source_row == NULL)
7331     return;
7332
7333   gtk_tree_drag_source_drag_data_delete (GTK_TREE_DRAG_SOURCE (model),
7334                                          source_row);
7335
7336   gtk_tree_path_free (source_row);
7337
7338   set_source_row (context, NULL, NULL);
7339 }
7340
7341 static void
7342 gtk_tree_view_drag_leave (GtkWidget      *widget,
7343                           GdkDragContext *context,
7344                           guint             time)
7345 {
7346   /* unset any highlight row */
7347   gtk_tree_view_set_drag_dest_row (GTK_TREE_VIEW (widget),
7348                                    NULL,
7349                                    GTK_TREE_VIEW_DROP_BEFORE);
7350
7351   remove_scroll_timeout (GTK_TREE_VIEW (widget));
7352   remove_open_timeout (GTK_TREE_VIEW (widget));
7353 }
7354
7355
7356 static gboolean
7357 gtk_tree_view_drag_motion (GtkWidget        *widget,
7358                            GdkDragContext   *context,
7359                            /* coordinates relative to the widget */
7360                            gint              x,
7361                            gint              y,
7362                            guint             time)
7363 {
7364   gboolean empty;
7365   GtkTreePath *path = NULL;
7366   GtkTreeViewDropPosition pos;
7367   GtkTreeView *tree_view;
7368   GdkDragAction suggested_action = 0;
7369   GdkAtom target;
7370
7371   tree_view = GTK_TREE_VIEW (widget);
7372
7373   if (!set_destination_row (tree_view, context, x, y, &suggested_action, &target))
7374     return FALSE;
7375
7376   gtk_tree_view_get_drag_dest_row (tree_view, &path, &pos);
7377
7378   /* we only know this *after* set_desination_row */
7379   empty = tree_view->priv->empty_view_drop;
7380
7381   if (path == NULL && !empty)
7382     {
7383       /* Can't drop here. */
7384       gdk_drag_status (context, 0, time);
7385     }
7386   else
7387     {
7388       if (tree_view->priv->open_dest_timeout == 0 &&
7389           (pos == GTK_TREE_VIEW_DROP_INTO_OR_AFTER ||
7390            pos == GTK_TREE_VIEW_DROP_INTO_OR_BEFORE))
7391         {
7392           tree_view->priv->open_dest_timeout =
7393             gdk_threads_add_timeout (AUTO_EXPAND_TIMEOUT, open_row_timeout, tree_view);
7394         }
7395       else
7396         {
7397           add_scroll_timeout (tree_view);
7398         }
7399
7400       if (target == gdk_atom_intern_static_string ("GTK_TREE_MODEL_ROW"))
7401         {
7402           /* Request data so we can use the source row when
7403            * determining whether to accept the drop
7404            */
7405           set_status_pending (context, suggested_action);
7406           gtk_drag_get_data (widget, context, target, time);
7407         }
7408       else
7409         {
7410           set_status_pending (context, 0);
7411           gdk_drag_status (context, suggested_action, time);
7412         }
7413     }
7414
7415   if (path)
7416     gtk_tree_path_free (path);
7417
7418   return TRUE;
7419 }
7420
7421
7422 static gboolean
7423 gtk_tree_view_drag_drop (GtkWidget        *widget,
7424                          GdkDragContext   *context,
7425                          /* coordinates relative to the widget */
7426                          gint              x,
7427                          gint              y,
7428                          guint             time)
7429 {
7430   GtkTreeView *tree_view;
7431   GtkTreePath *path;
7432   GdkDragAction suggested_action = 0;
7433   GdkAtom target = GDK_NONE;
7434   TreeViewDragInfo *di;
7435   GtkTreeModel *model;
7436   gboolean path_down_mode;
7437   gboolean drop_append_mode;
7438
7439   tree_view = GTK_TREE_VIEW (widget);
7440
7441   model = gtk_tree_view_get_model (tree_view);
7442
7443   remove_scroll_timeout (GTK_TREE_VIEW (widget));
7444   remove_open_timeout (GTK_TREE_VIEW (widget));
7445
7446   di = get_info (tree_view);
7447
7448   if (di == NULL)
7449     return FALSE;
7450
7451   if (!check_model_dnd (model, GTK_TYPE_TREE_DRAG_DEST, "drag_drop"))
7452     return FALSE;
7453
7454   if (!set_destination_row (tree_view, context, x, y, &suggested_action, &target))
7455     return FALSE;
7456
7457   path = get_logical_dest_row (tree_view, &path_down_mode, &drop_append_mode);
7458
7459   if (target != GDK_NONE && path != NULL)
7460     {
7461       /* in case a motion had requested drag data, change things so we
7462        * treat drag data receives as a drop.
7463        */
7464       set_status_pending (context, 0);
7465       set_dest_row (context, model, path,
7466                     path_down_mode, tree_view->priv->empty_view_drop,
7467                     drop_append_mode);
7468     }
7469
7470   if (path)
7471     gtk_tree_path_free (path);
7472
7473   /* Unset this thing */
7474   gtk_tree_view_set_drag_dest_row (GTK_TREE_VIEW (widget),
7475                                    NULL,
7476                                    GTK_TREE_VIEW_DROP_BEFORE);
7477
7478   if (target != GDK_NONE)
7479     {
7480       gtk_drag_get_data (widget, context, target, time);
7481       return TRUE;
7482     }
7483   else
7484     return FALSE;
7485 }
7486
7487 static void
7488 gtk_tree_view_drag_data_received (GtkWidget        *widget,
7489                                   GdkDragContext   *context,
7490                                   /* coordinates relative to the widget */
7491                                   gint              x,
7492                                   gint              y,
7493                                   GtkSelectionData *selection_data,
7494                                   guint             info,
7495                                   guint             time)
7496 {
7497   GtkTreePath *path;
7498   TreeViewDragInfo *di;
7499   gboolean accepted = FALSE;
7500   GtkTreeModel *model;
7501   GtkTreeView *tree_view;
7502   GtkTreePath *dest_row;
7503   GdkDragAction suggested_action;
7504   gboolean path_down_mode;
7505   gboolean drop_append_mode;
7506
7507   tree_view = GTK_TREE_VIEW (widget);
7508
7509   model = gtk_tree_view_get_model (tree_view);
7510
7511   if (!check_model_dnd (model, GTK_TYPE_TREE_DRAG_DEST, "drag_data_received"))
7512     return;
7513
7514   di = get_info (tree_view);
7515
7516   if (di == NULL)
7517     return;
7518
7519   suggested_action = get_status_pending (context);
7520
7521   if (suggested_action)
7522     {
7523       /* We are getting this data due to a request in drag_motion,
7524        * rather than due to a request in drag_drop, so we are just
7525        * supposed to call drag_status, not actually paste in the
7526        * data.
7527        */
7528       path = get_logical_dest_row (tree_view, &path_down_mode,
7529                                    &drop_append_mode);
7530
7531       if (path == NULL)
7532         suggested_action = 0;
7533       else if (path_down_mode)
7534         gtk_tree_path_down (path);
7535
7536       if (suggested_action)
7537         {
7538           if (!gtk_tree_drag_dest_row_drop_possible (GTK_TREE_DRAG_DEST (model),
7539                                                      path,
7540                                                      selection_data))
7541             {
7542               if (path_down_mode)
7543                 {
7544                   path_down_mode = FALSE;
7545                   gtk_tree_path_up (path);
7546
7547                   if (!gtk_tree_drag_dest_row_drop_possible (GTK_TREE_DRAG_DEST (model),
7548                                                              path,
7549                                                              selection_data))
7550                     suggested_action = 0;
7551                 }
7552               else
7553                 suggested_action = 0;
7554             }
7555         }
7556
7557       gdk_drag_status (context, suggested_action, time);
7558
7559       if (path)
7560         gtk_tree_path_free (path);
7561
7562       /* If you can't drop, remove user drop indicator until the next motion */
7563       if (suggested_action == 0)
7564         gtk_tree_view_set_drag_dest_row (GTK_TREE_VIEW (widget),
7565                                          NULL,
7566                                          GTK_TREE_VIEW_DROP_BEFORE);
7567
7568       return;
7569     }
7570
7571   dest_row = get_dest_row (context, &path_down_mode);
7572
7573   if (dest_row == NULL)
7574     return;
7575
7576   if (selection_data->length >= 0)
7577     {
7578       if (path_down_mode)
7579         {
7580           gtk_tree_path_down (dest_row);
7581           if (!gtk_tree_drag_dest_row_drop_possible (GTK_TREE_DRAG_DEST (model),
7582                                                      dest_row, selection_data))
7583             gtk_tree_path_up (dest_row);
7584         }
7585     }
7586
7587   if (selection_data->length >= 0)
7588     {
7589       if (gtk_tree_drag_dest_drag_data_received (GTK_TREE_DRAG_DEST (model),
7590                                                  dest_row,
7591                                                  selection_data))
7592         accepted = TRUE;
7593     }
7594
7595   gtk_drag_finish (context,
7596                    accepted,
7597                    (context->action == GDK_ACTION_MOVE),
7598                    time);
7599
7600   if (gtk_tree_path_get_depth (dest_row) == 1
7601       && gtk_tree_path_get_indices (dest_row)[0] == 0)
7602     {
7603       /* special special case drag to "0", scroll to first item */
7604       if (!tree_view->priv->scroll_to_path)
7605         gtk_tree_view_scroll_to_cell (tree_view, dest_row, NULL, FALSE, 0.0, 0.0);
7606     }
7607
7608   gtk_tree_path_free (dest_row);
7609
7610   /* drop dest_row */
7611   set_dest_row (context, NULL, NULL, FALSE, FALSE, FALSE);
7612 }
7613
7614
7615
7616 /* GtkContainer Methods
7617  */
7618
7619
7620 static void
7621 gtk_tree_view_remove (GtkContainer *container,
7622                       GtkWidget    *widget)
7623 {
7624   GtkTreeView *tree_view = GTK_TREE_VIEW (container);
7625   GtkTreeViewChild *child = NULL;
7626   GList *tmp_list;
7627
7628   tmp_list = tree_view->priv->children;
7629   while (tmp_list)
7630     {
7631       child = tmp_list->data;
7632       if (child->widget == widget)
7633         {
7634           gtk_widget_unparent (widget);
7635
7636           tree_view->priv->children = g_list_remove_link (tree_view->priv->children, tmp_list);
7637           g_list_free_1 (tmp_list);
7638           g_slice_free (GtkTreeViewChild, child);
7639           return;
7640         }
7641
7642       tmp_list = tmp_list->next;
7643     }
7644
7645   tmp_list = tree_view->priv->columns;
7646
7647   while (tmp_list)
7648     {
7649       GtkTreeViewColumn *column;
7650       column = tmp_list->data;
7651       if (column->button == widget)
7652         {
7653           gtk_widget_unparent (widget);
7654           return;
7655         }
7656       tmp_list = tmp_list->next;
7657     }
7658 }
7659
7660 static void
7661 gtk_tree_view_forall (GtkContainer *container,
7662                       gboolean      include_internals,
7663                       GtkCallback   callback,
7664                       gpointer      callback_data)
7665 {
7666   GtkTreeView *tree_view = GTK_TREE_VIEW (container);
7667   GtkTreeViewChild *child = NULL;
7668   GtkTreeViewColumn *column;
7669   GList *tmp_list;
7670
7671   tmp_list = tree_view->priv->children;
7672   while (tmp_list)
7673     {
7674       child = tmp_list->data;
7675       tmp_list = tmp_list->next;
7676
7677       (* callback) (child->widget, callback_data);
7678     }
7679   if (include_internals == FALSE)
7680     return;
7681
7682   for (tmp_list = tree_view->priv->columns; tmp_list; tmp_list = tmp_list->next)
7683     {
7684       column = tmp_list->data;
7685
7686       if (column->button)
7687         (* callback) (column->button, callback_data);
7688     }
7689 }
7690
7691 /* Returns TRUE if the treeview contains no "special" (editable or activatable)
7692  * cells. If so we draw one big row-spanning focus rectangle.
7693  */
7694 static gboolean
7695 gtk_tree_view_has_special_cell (GtkTreeView *tree_view)
7696 {
7697   GList *list;
7698
7699   for (list = tree_view->priv->columns; list; list = list->next)
7700     {
7701       if (!((GtkTreeViewColumn *)list->data)->visible)
7702         continue;
7703       if (_gtk_tree_view_column_count_special_cells (list->data))
7704         return TRUE;
7705     }
7706
7707   return FALSE;
7708 }
7709
7710 static void
7711 column_sizing_notify (GObject    *object,
7712                       GParamSpec *pspec,
7713                       gpointer    data)
7714 {
7715   GtkTreeViewColumn *c = GTK_TREE_VIEW_COLUMN (object);
7716
7717   if (gtk_tree_view_column_get_sizing (c) != GTK_TREE_VIEW_COLUMN_FIXED)
7718     /* disable fixed height mode */
7719     g_object_set (data, "fixed-height-mode", FALSE, NULL);
7720 }
7721
7722 /**
7723  * gtk_tree_view_set_fixed_height_mode:
7724  * @tree_view: a #GtkTreeView
7725  * @enable: %TRUE to enable fixed height mode
7726  *
7727  * Enables or disables the fixed height mode of @tree_view.
7728  * Fixed height mode speeds up #GtkTreeView by assuming that all
7729  * rows have the same height.
7730  * Only enable this option if all rows are the same height and all
7731  * columns are of type %GTK_TREE_VIEW_COLUMN_FIXED.
7732  *
7733  * Since: 2.6
7734  **/
7735 void
7736 gtk_tree_view_set_fixed_height_mode (GtkTreeView *tree_view,
7737                                      gboolean     enable)
7738 {
7739   GList *l;
7740
7741   enable = enable != FALSE;
7742
7743   if (enable == tree_view->priv->fixed_height_mode)
7744     return;
7745
7746   if (!enable)
7747     {
7748       tree_view->priv->fixed_height_mode = 0;
7749       tree_view->priv->fixed_height = -1;
7750
7751       /* force a revalidation */
7752       install_presize_handler (tree_view);
7753     }
7754   else
7755     {
7756       /* make sure all columns are of type FIXED */
7757       for (l = tree_view->priv->columns; l; l = l->next)
7758         {
7759           GtkTreeViewColumn *c = l->data;
7760
7761           g_return_if_fail (gtk_tree_view_column_get_sizing (c) == GTK_TREE_VIEW_COLUMN_FIXED);
7762         }
7763
7764       /* yes, we really have to do this is in a separate loop */
7765       for (l = tree_view->priv->columns; l; l = l->next)
7766         g_signal_connect (l->data, "notify::sizing",
7767                           G_CALLBACK (column_sizing_notify), tree_view);
7768
7769       tree_view->priv->fixed_height_mode = 1;
7770       tree_view->priv->fixed_height = -1;
7771
7772       if (tree_view->priv->tree)
7773         initialize_fixed_height_mode (tree_view);
7774     }
7775
7776   g_object_notify (G_OBJECT (tree_view), "fixed-height-mode");
7777 }
7778
7779 /**
7780  * gtk_tree_view_get_fixed_height_mode:
7781  * @tree_view: a #GtkTreeView
7782  *
7783  * Returns whether fixed height mode is turned on for @tree_view.
7784  *
7785  * Return value: %TRUE if @tree_view is in fixed height mode
7786  *
7787  * Since: 2.6
7788  **/
7789 gboolean
7790 gtk_tree_view_get_fixed_height_mode (GtkTreeView *tree_view)
7791 {
7792   return tree_view->priv->fixed_height_mode;
7793 }
7794
7795 /* Returns TRUE if the focus is within the headers, after the focus operation is
7796  * done
7797  */
7798 static gboolean
7799 gtk_tree_view_header_focus (GtkTreeView      *tree_view,
7800                             GtkDirectionType  dir,
7801                             gboolean          clamp_column_visible)
7802 {
7803   GtkWidget *focus_child;
7804
7805   GList *last_column, *first_column;
7806   GList *tmp_list;
7807   gboolean rtl;
7808
7809   if (! GTK_TREE_VIEW_FLAG_SET (tree_view, GTK_TREE_VIEW_HEADERS_VISIBLE))
7810     return FALSE;
7811
7812   focus_child = gtk_container_get_focus_child (GTK_CONTAINER (tree_view));
7813
7814   first_column = tree_view->priv->columns;
7815   while (first_column)
7816     {
7817       if (gtk_widget_get_can_focus (GTK_TREE_VIEW_COLUMN (first_column->data)->button) &&
7818           GTK_TREE_VIEW_COLUMN (first_column->data)->visible &&
7819           (GTK_TREE_VIEW_COLUMN (first_column->data)->clickable ||
7820            GTK_TREE_VIEW_COLUMN (first_column->data)->reorderable))
7821         break;
7822       first_column = first_column->next;
7823     }
7824
7825   /* No headers are visible, or are focusable.  We can't focus in or out.
7826    */
7827   if (first_column == NULL)
7828     return FALSE;
7829
7830   last_column = g_list_last (tree_view->priv->columns);
7831   while (last_column)
7832     {
7833       if (gtk_widget_get_can_focus (GTK_TREE_VIEW_COLUMN (last_column->data)->button) &&
7834           GTK_TREE_VIEW_COLUMN (last_column->data)->visible &&
7835           (GTK_TREE_VIEW_COLUMN (last_column->data)->clickable ||
7836            GTK_TREE_VIEW_COLUMN (last_column->data)->reorderable))
7837         break;
7838       last_column = last_column->prev;
7839     }
7840
7841
7842   rtl = (gtk_widget_get_direction (GTK_WIDGET (tree_view)) == GTK_TEXT_DIR_RTL);
7843
7844   switch (dir)
7845     {
7846     case GTK_DIR_TAB_BACKWARD:
7847     case GTK_DIR_TAB_FORWARD:
7848     case GTK_DIR_UP:
7849     case GTK_DIR_DOWN:
7850       if (focus_child == NULL)
7851         {
7852           if (tree_view->priv->focus_column != NULL &&
7853               gtk_widget_get_can_focus (tree_view->priv->focus_column->button))
7854             focus_child = tree_view->priv->focus_column->button;
7855           else
7856             focus_child = GTK_TREE_VIEW_COLUMN (first_column->data)->button;
7857           gtk_widget_grab_focus (focus_child);
7858           break;
7859         }
7860       return FALSE;
7861
7862     case GTK_DIR_LEFT:
7863     case GTK_DIR_RIGHT:
7864       if (focus_child == NULL)
7865         {
7866           if (tree_view->priv->focus_column != NULL)
7867             focus_child = tree_view->priv->focus_column->button;
7868           else if (dir == GTK_DIR_LEFT)
7869             focus_child = GTK_TREE_VIEW_COLUMN (last_column->data)->button;
7870           else
7871             focus_child = GTK_TREE_VIEW_COLUMN (first_column->data)->button;
7872           gtk_widget_grab_focus (focus_child);
7873           break;
7874         }
7875
7876       if (gtk_widget_child_focus (focus_child, dir))
7877         {
7878           /* The focus moves inside the button. */
7879           /* This is probably a great example of bad UI */
7880           break;
7881         }
7882
7883       /* We need to move the focus among the row of buttons. */
7884       for (tmp_list = tree_view->priv->columns; tmp_list; tmp_list = tmp_list->next)
7885         if (GTK_TREE_VIEW_COLUMN (tmp_list->data)->button == focus_child)
7886           break;
7887
7888       if ((tmp_list == first_column && dir == (rtl ? GTK_DIR_RIGHT : GTK_DIR_LEFT))
7889           || (tmp_list == last_column && dir == (rtl ? GTK_DIR_LEFT : GTK_DIR_RIGHT)))
7890         {
7891           gtk_widget_error_bell (GTK_WIDGET (tree_view));
7892           break;
7893         }
7894
7895       while (tmp_list)
7896         {
7897           GtkTreeViewColumn *column;
7898
7899           if (dir == (rtl ? GTK_DIR_LEFT : GTK_DIR_RIGHT))
7900             tmp_list = tmp_list->next;
7901           else
7902             tmp_list = tmp_list->prev;
7903
7904           if (tmp_list == NULL)
7905             {
7906               g_warning ("Internal button not found");
7907               break;
7908             }
7909           column = tmp_list->data;
7910           if (column->button &&
7911               column->visible &&
7912               gtk_widget_get_can_focus (column->button))
7913             {
7914               focus_child = column->button;
7915               gtk_widget_grab_focus (column->button);
7916               break;
7917             }
7918         }
7919       break;
7920     default:
7921       g_assert_not_reached ();
7922       break;
7923     }
7924
7925   /* if focus child is non-null, we assume it's been set to the current focus child
7926    */
7927   if (focus_child)
7928     {
7929       for (tmp_list = tree_view->priv->columns; tmp_list; tmp_list = tmp_list->next)
7930         if (GTK_TREE_VIEW_COLUMN (tmp_list->data)->button == focus_child)
7931           {
7932             tree_view->priv->focus_column = GTK_TREE_VIEW_COLUMN (tmp_list->data);
7933             break;
7934           }
7935
7936       if (clamp_column_visible)
7937         {
7938           gtk_tree_view_clamp_column_visible (tree_view,
7939                                               tree_view->priv->focus_column,
7940                                               FALSE);
7941         }
7942     }
7943
7944   return (focus_child != NULL);
7945 }
7946
7947 /* This function returns in 'path' the first focusable path, if the given path
7948  * is already focusable, it's the returned one.
7949  */
7950 static gboolean
7951 search_first_focusable_path (GtkTreeView  *tree_view,
7952                              GtkTreePath **path,
7953                              gboolean      search_forward,
7954                              GtkRBTree   **new_tree,
7955                              GtkRBNode   **new_node)
7956 {
7957   GtkRBTree *tree = NULL;
7958   GtkRBNode *node = NULL;
7959
7960   if (!path || !*path)
7961     return FALSE;
7962
7963   _gtk_tree_view_find_node (tree_view, *path, &tree, &node);
7964
7965   if (!tree || !node)
7966     return FALSE;
7967
7968   while (node && row_is_separator (tree_view, NULL, *path))
7969     {
7970       if (search_forward)
7971         _gtk_rbtree_next_full (tree, node, &tree, &node);
7972       else
7973         _gtk_rbtree_prev_full (tree, node, &tree, &node);
7974
7975       if (*path)
7976         gtk_tree_path_free (*path);
7977
7978       if (node)
7979         *path = _gtk_tree_view_find_path (tree_view, tree, node);
7980       else
7981         *path = NULL;
7982     }
7983
7984   if (new_tree)
7985     *new_tree = tree;
7986
7987   if (new_node)
7988     *new_node = node;
7989
7990   return (*path != NULL);
7991 }
7992
7993 static gint
7994 gtk_tree_view_focus (GtkWidget        *widget,
7995                      GtkDirectionType  direction)
7996 {
7997   GtkTreeView *tree_view = GTK_TREE_VIEW (widget);
7998   GtkContainer *container = GTK_CONTAINER (widget);
7999   GtkWidget *focus_child;
8000
8001   if (!gtk_widget_is_sensitive (widget) || !gtk_widget_get_can_focus (widget))
8002     return FALSE;
8003
8004   focus_child = gtk_container_get_focus_child (container);
8005
8006   gtk_tree_view_stop_editing (GTK_TREE_VIEW (widget), FALSE);
8007   /* Case 1.  Headers currently have focus. */
8008   if (focus_child)
8009     {
8010       switch (direction)
8011         {
8012         case GTK_DIR_LEFT:
8013         case GTK_DIR_RIGHT:
8014           gtk_tree_view_header_focus (tree_view, direction, TRUE);
8015           return TRUE;
8016         case GTK_DIR_TAB_BACKWARD:
8017         case GTK_DIR_UP:
8018           return FALSE;
8019         case GTK_DIR_TAB_FORWARD:
8020         case GTK_DIR_DOWN:
8021           gtk_widget_grab_focus (widget);
8022           return TRUE;
8023         default:
8024           g_assert_not_reached ();
8025           return FALSE;
8026         }
8027     }
8028
8029   /* Case 2. We don't have focus at all. */
8030   if (!gtk_widget_has_focus (widget))
8031     {
8032       if (!gtk_tree_view_header_focus (tree_view, direction, FALSE))
8033         gtk_widget_grab_focus (widget);
8034       return TRUE;
8035     }
8036
8037   /* Case 3. We have focus already. */
8038   if (direction == GTK_DIR_TAB_BACKWARD)
8039     return (gtk_tree_view_header_focus (tree_view, direction, FALSE));
8040   else if (direction == GTK_DIR_TAB_FORWARD)
8041     return FALSE;
8042
8043   /* Other directions caught by the keybindings */
8044   gtk_widget_grab_focus (widget);
8045   return TRUE;
8046 }
8047
8048 static void
8049 gtk_tree_view_grab_focus (GtkWidget *widget)
8050 {
8051   GTK_WIDGET_CLASS (gtk_tree_view_parent_class)->grab_focus (widget);
8052
8053   gtk_tree_view_focus_to_cursor (GTK_TREE_VIEW (widget));
8054 }
8055
8056 static void
8057 gtk_tree_view_style_set (GtkWidget *widget,
8058                          GtkStyle *previous_style)
8059 {
8060   GtkTreeView *tree_view = GTK_TREE_VIEW (widget);
8061   GList *list;
8062   GtkTreeViewColumn *column;
8063
8064   if (gtk_widget_get_realized (widget))
8065     {
8066       gdk_window_set_back_pixmap (widget->window, NULL, FALSE);
8067       gdk_window_set_background (tree_view->priv->bin_window, &widget->style->base[widget->state]);
8068       gtk_style_set_background (widget->style, tree_view->priv->header_window, GTK_STATE_NORMAL);
8069
8070       gtk_tree_view_set_grid_lines (tree_view, tree_view->priv->grid_lines);
8071       gtk_tree_view_set_enable_tree_lines (tree_view, tree_view->priv->tree_lines_enabled);
8072     }
8073
8074   gtk_widget_style_get (widget,
8075                         "expander-size", &tree_view->priv->expander_size,
8076                         NULL);
8077   tree_view->priv->expander_size += EXPANDER_EXTRA_PADDING;
8078
8079   for (list = tree_view->priv->columns; list; list = list->next)
8080     {
8081       column = list->data;
8082       _gtk_tree_view_column_cell_set_dirty (column, TRUE);
8083     }
8084
8085   tree_view->priv->fixed_height = -1;
8086   _gtk_rbtree_mark_invalid (tree_view->priv->tree);
8087
8088   gtk_widget_queue_resize (widget);
8089 }
8090
8091
8092 static void
8093 gtk_tree_view_set_focus_child (GtkContainer *container,
8094                                GtkWidget    *child)
8095 {
8096   GtkTreeView *tree_view = GTK_TREE_VIEW (container);
8097   GList *list;
8098
8099   for (list = tree_view->priv->columns; list; list = list->next)
8100     {
8101       if (GTK_TREE_VIEW_COLUMN (list->data)->button == child)
8102         {
8103           tree_view->priv->focus_column = GTK_TREE_VIEW_COLUMN (list->data);
8104           break;
8105         }
8106     }
8107
8108   GTK_CONTAINER_CLASS (gtk_tree_view_parent_class)->set_focus_child (container, child);
8109 }
8110
8111 static void
8112 gtk_tree_view_set_adjustments (GtkTreeView   *tree_view,
8113                                GtkAdjustment *hadj,
8114                                GtkAdjustment *vadj)
8115 {
8116   gboolean need_adjust = FALSE;
8117
8118   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
8119
8120   if (hadj)
8121     g_return_if_fail (GTK_IS_ADJUSTMENT (hadj));
8122   else
8123     hadj = GTK_ADJUSTMENT (gtk_adjustment_new (0.0, 0.0, 0.0, 0.0, 0.0, 0.0));
8124   if (vadj)
8125     g_return_if_fail (GTK_IS_ADJUSTMENT (vadj));
8126   else
8127     vadj = GTK_ADJUSTMENT (gtk_adjustment_new (0.0, 0.0, 0.0, 0.0, 0.0, 0.0));
8128
8129   if (tree_view->priv->hadjustment && (tree_view->priv->hadjustment != hadj))
8130     {
8131       g_signal_handlers_disconnect_by_func (tree_view->priv->hadjustment,
8132                                             gtk_tree_view_adjustment_changed,
8133                                             tree_view);
8134       g_object_unref (tree_view->priv->hadjustment);
8135     }
8136
8137   if (tree_view->priv->vadjustment && (tree_view->priv->vadjustment != vadj))
8138     {
8139       g_signal_handlers_disconnect_by_func (tree_view->priv->vadjustment,
8140                                             gtk_tree_view_adjustment_changed,
8141                                             tree_view);
8142       g_object_unref (tree_view->priv->vadjustment);
8143     }
8144
8145   if (tree_view->priv->hadjustment != hadj)
8146     {
8147       tree_view->priv->hadjustment = hadj;
8148       g_object_ref_sink (tree_view->priv->hadjustment);
8149
8150       g_signal_connect (tree_view->priv->hadjustment, "value-changed",
8151                         G_CALLBACK (gtk_tree_view_adjustment_changed),
8152                         tree_view);
8153       need_adjust = TRUE;
8154     }
8155
8156   if (tree_view->priv->vadjustment != vadj)
8157     {
8158       tree_view->priv->vadjustment = vadj;
8159       g_object_ref_sink (tree_view->priv->vadjustment);
8160
8161       g_signal_connect (tree_view->priv->vadjustment, "value-changed",
8162                         G_CALLBACK (gtk_tree_view_adjustment_changed),
8163                         tree_view);
8164       need_adjust = TRUE;
8165     }
8166
8167   if (need_adjust)
8168     gtk_tree_view_adjustment_changed (NULL, tree_view);
8169 }
8170
8171
8172 static gboolean
8173 gtk_tree_view_real_move_cursor (GtkTreeView       *tree_view,
8174                                 GtkMovementStep    step,
8175                                 gint               count)
8176 {
8177   GdkModifierType state;
8178
8179   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), FALSE);
8180   g_return_val_if_fail (step == GTK_MOVEMENT_LOGICAL_POSITIONS ||
8181                         step == GTK_MOVEMENT_VISUAL_POSITIONS ||
8182                         step == GTK_MOVEMENT_DISPLAY_LINES ||
8183                         step == GTK_MOVEMENT_PAGES ||
8184                         step == GTK_MOVEMENT_BUFFER_ENDS, FALSE);
8185
8186   if (tree_view->priv->tree == NULL)
8187     return FALSE;
8188   if (!gtk_widget_has_focus (GTK_WIDGET (tree_view)))
8189     return FALSE;
8190
8191   gtk_tree_view_stop_editing (tree_view, FALSE);
8192   GTK_TREE_VIEW_SET_FLAG (tree_view, GTK_TREE_VIEW_DRAW_KEYFOCUS);
8193   gtk_widget_grab_focus (GTK_WIDGET (tree_view));
8194
8195   if (gtk_get_current_event_state (&state))
8196     {
8197       if ((state & GDK_CONTROL_MASK) == GDK_CONTROL_MASK)
8198         tree_view->priv->ctrl_pressed = TRUE;
8199       if ((state & GDK_SHIFT_MASK) == GDK_SHIFT_MASK)
8200         tree_view->priv->shift_pressed = TRUE;
8201     }
8202   /* else we assume not pressed */
8203
8204   switch (step)
8205     {
8206       /* currently we make no distinction.  When we go bi-di, we need to */
8207     case GTK_MOVEMENT_LOGICAL_POSITIONS:
8208     case GTK_MOVEMENT_VISUAL_POSITIONS:
8209       gtk_tree_view_move_cursor_left_right (tree_view, count);
8210       break;
8211     case GTK_MOVEMENT_DISPLAY_LINES:
8212       gtk_tree_view_move_cursor_up_down (tree_view, count);
8213       break;
8214     case GTK_MOVEMENT_PAGES:
8215       gtk_tree_view_move_cursor_page_up_down (tree_view, count);
8216       break;
8217     case GTK_MOVEMENT_BUFFER_ENDS:
8218       gtk_tree_view_move_cursor_start_end (tree_view, count);
8219       break;
8220     default:
8221       g_assert_not_reached ();
8222     }
8223
8224   tree_view->priv->ctrl_pressed = FALSE;
8225   tree_view->priv->shift_pressed = FALSE;
8226
8227   return TRUE;
8228 }
8229
8230 static void
8231 gtk_tree_view_put (GtkTreeView *tree_view,
8232                    GtkWidget   *child_widget,
8233                    /* in bin_window coordinates */
8234                    gint         x,
8235                    gint         y,
8236                    gint         width,
8237                    gint         height)
8238 {
8239   GtkTreeViewChild *child;
8240
8241   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
8242   g_return_if_fail (GTK_IS_WIDGET (child_widget));
8243
8244   child = g_slice_new (GtkTreeViewChild);
8245
8246   child->widget = child_widget;
8247   child->x = x;
8248   child->y = y;
8249   child->width = width;
8250   child->height = height;
8251
8252   tree_view->priv->children = g_list_append (tree_view->priv->children, child);
8253
8254   if (gtk_widget_get_realized (GTK_WIDGET (tree_view)))
8255     gtk_widget_set_parent_window (child->widget, tree_view->priv->bin_window);
8256
8257   gtk_widget_set_parent (child_widget, GTK_WIDGET (tree_view));
8258 }
8259
8260 void
8261 _gtk_tree_view_child_move_resize (GtkTreeView *tree_view,
8262                                   GtkWidget   *widget,
8263                                   /* in tree coordinates */
8264                                   gint         x,
8265                                   gint         y,
8266                                   gint         width,
8267                                   gint         height)
8268 {
8269   GtkTreeViewChild *child = NULL;
8270   GList *list;
8271   GdkRectangle allocation;
8272
8273   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
8274   g_return_if_fail (GTK_IS_WIDGET (widget));
8275
8276   for (list = tree_view->priv->children; list; list = list->next)
8277     {
8278       if (((GtkTreeViewChild *)list->data)->widget == widget)
8279         {
8280           child = list->data;
8281           break;
8282         }
8283     }
8284   if (child == NULL)
8285     return;
8286
8287   allocation.x = child->x = x;
8288   allocation.y = child->y = y;
8289   allocation.width = child->width = width;
8290   allocation.height = child->height = height;
8291
8292   if (gtk_widget_get_realized (widget))
8293     gtk_widget_size_allocate (widget, &allocation);
8294 }
8295
8296
8297 /* TreeModel Callbacks
8298  */
8299
8300 static void
8301 gtk_tree_view_row_changed (GtkTreeModel *model,
8302                            GtkTreePath  *path,
8303                            GtkTreeIter  *iter,
8304                            gpointer      data)
8305 {
8306   GtkTreeView *tree_view = (GtkTreeView *)data;
8307   GtkRBTree *tree;
8308   GtkRBNode *node;
8309   gboolean free_path = FALSE;
8310   GList *list;
8311   GtkTreePath *cursor_path;
8312
8313   g_return_if_fail (path != NULL || iter != NULL);
8314
8315   if (tree_view->priv->cursor != NULL)
8316     cursor_path = gtk_tree_row_reference_get_path (tree_view->priv->cursor);
8317   else
8318     cursor_path = NULL;
8319
8320   if (tree_view->priv->edited_column &&
8321       (cursor_path == NULL || gtk_tree_path_compare (cursor_path, path) == 0))
8322     gtk_tree_view_stop_editing (tree_view, TRUE);
8323
8324   if (cursor_path != NULL)
8325     gtk_tree_path_free (cursor_path);
8326
8327   if (path == NULL)
8328     {
8329       path = gtk_tree_model_get_path (model, iter);
8330       free_path = TRUE;
8331     }
8332   else if (iter == NULL)
8333     gtk_tree_model_get_iter (model, iter, path);
8334
8335   if (_gtk_tree_view_find_node (tree_view,
8336                                 path,
8337                                 &tree,
8338                                 &node))
8339     /* We aren't actually showing the node */
8340     goto done;
8341
8342   if (tree == NULL)
8343     goto done;
8344
8345   if (tree_view->priv->fixed_height_mode
8346       && tree_view->priv->fixed_height >= 0)
8347     {
8348       _gtk_rbtree_node_set_height (tree, node, tree_view->priv->fixed_height);
8349       if (gtk_widget_get_realized (GTK_WIDGET (tree_view)))
8350         gtk_tree_view_node_queue_redraw (tree_view, tree, node);
8351     }
8352   else
8353     {
8354       _gtk_rbtree_node_mark_invalid (tree, node);
8355       for (list = tree_view->priv->columns; list; list = list->next)
8356         {
8357           GtkTreeViewColumn *column;
8358
8359           column = list->data;
8360           if (! column->visible)
8361             continue;
8362
8363           if (column->column_type == GTK_TREE_VIEW_COLUMN_AUTOSIZE)
8364             {
8365               _gtk_tree_view_column_cell_set_dirty (column, TRUE);
8366             }
8367         }
8368     }
8369
8370  done:
8371   if (!tree_view->priv->fixed_height_mode &&
8372       gtk_widget_get_realized (GTK_WIDGET (tree_view)))
8373     install_presize_handler (tree_view);
8374   if (free_path)
8375     gtk_tree_path_free (path);
8376 }
8377
8378 static void
8379 gtk_tree_view_row_inserted (GtkTreeModel *model,
8380                             GtkTreePath  *path,
8381                             GtkTreeIter  *iter,
8382                             gpointer      data)
8383 {
8384   GtkTreeView *tree_view = (GtkTreeView *) data;
8385   gint *indices;
8386   GtkRBTree *tmptree, *tree;
8387   GtkRBNode *tmpnode = NULL;
8388   gint depth;
8389   gint i = 0;
8390   gint height;
8391   gboolean free_path = FALSE;
8392   gboolean node_visible = TRUE;
8393
8394   g_return_if_fail (path != NULL || iter != NULL);
8395
8396   if (tree_view->priv->fixed_height_mode
8397       && tree_view->priv->fixed_height >= 0)
8398     height = tree_view->priv->fixed_height;
8399   else
8400     height = 0;
8401
8402   if (path == NULL)
8403     {
8404       path = gtk_tree_model_get_path (model, iter);
8405       free_path = TRUE;
8406     }
8407   else if (iter == NULL)
8408     gtk_tree_model_get_iter (model, iter, path);
8409
8410   if (tree_view->priv->tree == NULL)
8411     tree_view->priv->tree = _gtk_rbtree_new ();
8412
8413   tmptree = tree = tree_view->priv->tree;
8414
8415   /* Update all row-references */
8416   gtk_tree_row_reference_inserted (G_OBJECT (data), path);
8417   depth = gtk_tree_path_get_depth (path);
8418   indices = gtk_tree_path_get_indices (path);
8419
8420   /* First, find the parent tree */
8421   while (i < depth - 1)
8422     {
8423       if (tmptree == NULL)
8424         {
8425           /* We aren't showing the node */
8426           node_visible = FALSE;
8427           goto done;
8428         }
8429
8430       tmpnode = _gtk_rbtree_find_count (tmptree, indices[i] + 1);
8431       if (tmpnode == NULL)
8432         {
8433           g_warning ("A node was inserted with a parent that's not in the tree.\n" \
8434                      "This possibly means that a GtkTreeModel inserted a child node\n" \
8435                      "before the parent was inserted.");
8436           goto done;
8437         }
8438       else if (!GTK_RBNODE_FLAG_SET (tmpnode, GTK_RBNODE_IS_PARENT))
8439         {
8440           /* FIXME enforce correct behavior on model, probably */
8441           /* In theory, the model should have emitted has_child_toggled here.  We
8442            * try to catch it anyway, just to be safe, in case the model hasn't.
8443            */
8444           GtkTreePath *tmppath = _gtk_tree_view_find_path (tree_view,
8445                                                            tree,
8446                                                            tmpnode);
8447           gtk_tree_view_row_has_child_toggled (model, tmppath, NULL, data);
8448           gtk_tree_path_free (tmppath);
8449           goto done;
8450         }
8451
8452       tmptree = tmpnode->children;
8453       tree = tmptree;
8454       i++;
8455     }
8456
8457   if (tree == NULL)
8458     {
8459       node_visible = FALSE;
8460       goto done;
8461     }
8462
8463   /* ref the node */
8464   gtk_tree_model_ref_node (tree_view->priv->model, iter);
8465   if (indices[depth - 1] == 0)
8466     {
8467       tmpnode = _gtk_rbtree_find_count (tree, 1);
8468       tmpnode = _gtk_rbtree_insert_before (tree, tmpnode, height, FALSE);
8469     }
8470   else
8471     {
8472       tmpnode = _gtk_rbtree_find_count (tree, indices[depth - 1]);
8473       tmpnode = _gtk_rbtree_insert_after (tree, tmpnode, height, FALSE);
8474     }
8475
8476  done:
8477   if (height > 0)
8478     {
8479       if (tree)
8480         _gtk_rbtree_node_mark_valid (tree, tmpnode);
8481
8482       if (node_visible && node_is_visible (tree_view, tree, tmpnode))
8483         gtk_widget_queue_resize (GTK_WIDGET (tree_view));
8484       else
8485         gtk_widget_queue_resize_no_redraw (GTK_WIDGET (tree_view));
8486     }
8487   else
8488     install_presize_handler (tree_view);
8489   if (free_path)
8490     gtk_tree_path_free (path);
8491 }
8492
8493 static void
8494 gtk_tree_view_row_has_child_toggled (GtkTreeModel *model,
8495                                      GtkTreePath  *path,
8496                                      GtkTreeIter  *iter,
8497                                      gpointer      data)
8498 {
8499   GtkTreeView *tree_view = (GtkTreeView *)data;
8500   GtkTreeIter real_iter;
8501   gboolean has_child;
8502   GtkRBTree *tree;
8503   GtkRBNode *node;
8504   gboolean free_path = FALSE;
8505
8506   g_return_if_fail (path != NULL || iter != NULL);
8507
8508   if (iter)
8509     real_iter = *iter;
8510
8511   if (path == NULL)
8512     {
8513       path = gtk_tree_model_get_path (model, iter);
8514       free_path = TRUE;
8515     }
8516   else if (iter == NULL)
8517     gtk_tree_model_get_iter (model, &real_iter, path);
8518
8519   if (_gtk_tree_view_find_node (tree_view,
8520                                 path,
8521                                 &tree,
8522                                 &node))
8523     /* We aren't actually showing the node */
8524     goto done;
8525
8526   if (tree == NULL)
8527     goto done;
8528
8529   has_child = gtk_tree_model_iter_has_child (model, &real_iter);
8530   /* Sanity check.
8531    */
8532   if (GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_PARENT) == has_child)
8533     goto done;
8534
8535   if (has_child)
8536     GTK_RBNODE_SET_FLAG (node, GTK_RBNODE_IS_PARENT);
8537   else
8538     GTK_RBNODE_UNSET_FLAG (node, GTK_RBNODE_IS_PARENT);
8539
8540   if (has_child && GTK_TREE_VIEW_FLAG_SET (tree_view, GTK_TREE_VIEW_IS_LIST))
8541     {
8542       GTK_TREE_VIEW_UNSET_FLAG (tree_view, GTK_TREE_VIEW_IS_LIST);
8543       if (GTK_TREE_VIEW_FLAG_SET (tree_view, GTK_TREE_VIEW_SHOW_EXPANDERS))
8544         {
8545           GList *list;
8546
8547           for (list = tree_view->priv->columns; list; list = list->next)
8548             if (GTK_TREE_VIEW_COLUMN (list->data)->visible)
8549               {
8550                 GTK_TREE_VIEW_COLUMN (list->data)->dirty = TRUE;
8551                 _gtk_tree_view_column_cell_set_dirty (GTK_TREE_VIEW_COLUMN (list->data), TRUE);
8552                 break;
8553               }
8554         }
8555       gtk_widget_queue_resize (GTK_WIDGET (tree_view));
8556     }
8557   else
8558     {
8559       _gtk_tree_view_queue_draw_node (tree_view, tree, node, NULL);
8560     }
8561
8562  done:
8563   if (free_path)
8564     gtk_tree_path_free (path);
8565 }
8566
8567 static void
8568 count_children_helper (GtkRBTree *tree,
8569                        GtkRBNode *node,
8570                        gpointer   data)
8571 {
8572   if (node->children)
8573     _gtk_rbtree_traverse (node->children, node->children->root, G_POST_ORDER, count_children_helper, data);
8574   (*((gint *)data))++;
8575 }
8576
8577 static void
8578 check_selection_helper (GtkRBTree *tree,
8579                         GtkRBNode *node,
8580                         gpointer   data)
8581 {
8582   gint *value = (gint *)data;
8583
8584   *value = GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_SELECTED);
8585
8586   if (node->children && !*value)
8587     _gtk_rbtree_traverse (node->children, node->children->root, G_POST_ORDER, check_selection_helper, data);
8588 }
8589
8590 static void
8591 gtk_tree_view_row_deleted (GtkTreeModel *model,
8592                            GtkTreePath  *path,
8593                            gpointer      data)
8594 {
8595   GtkTreeView *tree_view = (GtkTreeView *)data;
8596   GtkRBTree *tree;
8597   GtkRBNode *node;
8598   GList *list;
8599   gint selection_changed = FALSE;
8600
8601   g_return_if_fail (path != NULL);
8602
8603   gtk_tree_row_reference_deleted (G_OBJECT (data), path);
8604
8605   if (_gtk_tree_view_find_node (tree_view, path, &tree, &node))
8606     return;
8607
8608   if (tree == NULL)
8609     return;
8610
8611   /* check if the selection has been changed */
8612   _gtk_rbtree_traverse (tree, node, G_POST_ORDER,
8613                         check_selection_helper, &selection_changed);
8614
8615   for (list = tree_view->priv->columns; list; list = list->next)
8616     if (((GtkTreeViewColumn *)list->data)->visible &&
8617         ((GtkTreeViewColumn *)list->data)->column_type == GTK_TREE_VIEW_COLUMN_AUTOSIZE)
8618       _gtk_tree_view_column_cell_set_dirty ((GtkTreeViewColumn *)list->data, TRUE);
8619
8620   /* Ensure we don't have a dangling pointer to a dead node */
8621   ensure_unprelighted (tree_view);
8622
8623   /* Cancel editting if we've started */
8624   gtk_tree_view_stop_editing (tree_view, TRUE);
8625
8626   /* If we have a node expanded/collapsed timeout, remove it */
8627   remove_expand_collapse_timeout (tree_view);
8628
8629   if (tree_view->priv->destroy_count_func)
8630     {
8631       gint child_count = 0;
8632       if (node->children)
8633         _gtk_rbtree_traverse (node->children, node->children->root, G_POST_ORDER, count_children_helper, &child_count);
8634       tree_view->priv->destroy_count_func (tree_view, path, child_count, tree_view->priv->destroy_count_data);
8635     }
8636
8637   if (tree->root->count == 1)
8638     {
8639       if (tree_view->priv->tree == tree)
8640         tree_view->priv->tree = NULL;
8641
8642       _gtk_rbtree_remove (tree);
8643     }
8644   else
8645     {
8646       _gtk_rbtree_remove_node (tree, node);
8647     }
8648
8649   if (! gtk_tree_row_reference_valid (tree_view->priv->top_row))
8650     {
8651       gtk_tree_row_reference_free (tree_view->priv->top_row);
8652       tree_view->priv->top_row = NULL;
8653     }
8654
8655   install_scroll_sync_handler (tree_view);
8656
8657   gtk_widget_queue_resize (GTK_WIDGET (tree_view));
8658
8659   if (selection_changed)
8660     g_signal_emit_by_name (tree_view->priv->selection, "changed");
8661 }
8662
8663 static void
8664 gtk_tree_view_rows_reordered (GtkTreeModel *model,
8665                               GtkTreePath  *parent,
8666                               GtkTreeIter  *iter,
8667                               gint         *new_order,
8668                               gpointer      data)
8669 {
8670   GtkTreeView *tree_view = GTK_TREE_VIEW (data);
8671   GtkRBTree *tree;
8672   GtkRBNode *node;
8673   gint len;
8674
8675   len = gtk_tree_model_iter_n_children (model, iter);
8676
8677   if (len < 2)
8678     return;
8679
8680   gtk_tree_row_reference_reordered (G_OBJECT (data),
8681                                     parent,
8682                                     iter,
8683                                     new_order);
8684
8685   if (_gtk_tree_view_find_node (tree_view,
8686                                 parent,
8687                                 &tree,
8688                                 &node))
8689     return;
8690
8691   /* We need to special case the parent path */
8692   if (tree == NULL)
8693     tree = tree_view->priv->tree;
8694   else
8695     tree = node->children;
8696
8697   if (tree == NULL)
8698     return;
8699
8700   if (tree_view->priv->edited_column)
8701     gtk_tree_view_stop_editing (tree_view, TRUE);
8702
8703   /* we need to be unprelighted */
8704   ensure_unprelighted (tree_view);
8705
8706   /* clear the timeout */
8707   cancel_arrow_animation (tree_view);
8708
8709   _gtk_rbtree_reorder (tree, new_order, len);
8710
8711   gtk_widget_queue_draw (GTK_WIDGET (tree_view));
8712
8713   gtk_tree_view_dy_to_top_row (tree_view);
8714 }
8715
8716
8717 /* Internal tree functions
8718  */
8719
8720
8721 static void
8722 gtk_tree_view_get_background_xrange (GtkTreeView       *tree_view,
8723                                      GtkRBTree         *tree,
8724                                      GtkTreeViewColumn *column,
8725                                      gint              *x1,
8726                                      gint              *x2)
8727 {
8728   GtkTreeViewColumn *tmp_column = NULL;
8729   gint total_width;
8730   GList *list;
8731   gboolean rtl;
8732
8733   if (x1)
8734     *x1 = 0;
8735
8736   if (x2)
8737     *x2 = 0;
8738
8739   rtl = (gtk_widget_get_direction (GTK_WIDGET (tree_view)) == GTK_TEXT_DIR_RTL);
8740
8741   total_width = 0;
8742   for (list = (rtl ? g_list_last (tree_view->priv->columns) : g_list_first (tree_view->priv->columns));
8743        list;
8744        list = (rtl ? list->prev : list->next))
8745     {
8746       tmp_column = list->data;
8747
8748       if (tmp_column == column)
8749         break;
8750
8751       if (tmp_column->visible)
8752         total_width += tmp_column->width;
8753     }
8754
8755   if (tmp_column != column)
8756     {
8757       g_warning (G_STRLOC": passed-in column isn't in the tree");
8758       return;
8759     }
8760
8761   if (x1)
8762     *x1 = total_width;
8763
8764   if (x2)
8765     {
8766       if (column->visible)
8767         *x2 = total_width + column->width;
8768       else
8769         *x2 = total_width; /* width of 0 */
8770     }
8771 }
8772 static void
8773 gtk_tree_view_get_arrow_xrange (GtkTreeView *tree_view,
8774                                 GtkRBTree   *tree,
8775                                 gint        *x1,
8776                                 gint        *x2)
8777 {
8778   gint x_offset = 0;
8779   GList *list;
8780   GtkTreeViewColumn *tmp_column = NULL;
8781   gint total_width;
8782   gboolean indent_expanders;
8783   gboolean rtl;
8784
8785   rtl = (gtk_widget_get_direction (GTK_WIDGET (tree_view)) == GTK_TEXT_DIR_RTL);
8786
8787   total_width = 0;
8788   for (list = (rtl ? g_list_last (tree_view->priv->columns) : g_list_first (tree_view->priv->columns));
8789        list;
8790        list = (rtl ? list->prev : list->next))
8791     {
8792       tmp_column = list->data;
8793
8794       if (gtk_tree_view_is_expander_column (tree_view, tmp_column))
8795         {
8796           if (rtl)
8797             x_offset = total_width + tmp_column->width - tree_view->priv->expander_size;
8798           else
8799             x_offset = total_width;
8800           break;
8801         }
8802
8803       if (tmp_column->visible)
8804         total_width += tmp_column->width;
8805     }
8806
8807   gtk_widget_style_get (GTK_WIDGET (tree_view),
8808                         "indent-expanders", &indent_expanders,
8809                         NULL);
8810
8811   if (indent_expanders)
8812     {
8813       if (rtl)
8814         x_offset -= tree_view->priv->expander_size * _gtk_rbtree_get_depth (tree);
8815       else
8816         x_offset += tree_view->priv->expander_size * _gtk_rbtree_get_depth (tree);
8817     }
8818
8819   *x1 = x_offset;
8820
8821   if (tmp_column && tmp_column->visible)
8822     /* +1 because x2 isn't included in the range. */
8823     *x2 = *x1 + tree_view->priv->expander_size + 1;
8824   else
8825     *x2 = *x1;
8826 }
8827
8828 static void
8829 gtk_tree_view_build_tree (GtkTreeView *tree_view,
8830                           GtkRBTree   *tree,
8831                           GtkTreeIter *iter,
8832                           gint         depth,
8833                           gboolean     recurse)
8834 {
8835   GtkRBNode *temp = NULL;
8836   GtkTreePath *path = NULL;
8837   gboolean is_list = GTK_TREE_VIEW_FLAG_SET (tree_view, GTK_TREE_VIEW_IS_LIST);
8838
8839   do
8840     {
8841       gtk_tree_model_ref_node (tree_view->priv->model, iter);
8842       temp = _gtk_rbtree_insert_after (tree, temp, 0, FALSE);
8843
8844       if (tree_view->priv->fixed_height > 0)
8845         {
8846           if (GTK_RBNODE_FLAG_SET (temp, GTK_RBNODE_INVALID))
8847             {
8848               _gtk_rbtree_node_set_height (tree, temp, tree_view->priv->fixed_height);
8849               _gtk_rbtree_node_mark_valid (tree, temp);
8850             }
8851         }
8852
8853       if (is_list)
8854         continue;
8855
8856       if (recurse)
8857         {
8858           GtkTreeIter child;
8859
8860           if (!path)
8861             path = gtk_tree_model_get_path (tree_view->priv->model, iter);
8862           else
8863             gtk_tree_path_next (path);
8864
8865           if (gtk_tree_model_iter_children (tree_view->priv->model, &child, iter))
8866             {
8867               gboolean expand;
8868
8869               g_signal_emit (tree_view, tree_view_signals[TEST_EXPAND_ROW], 0, iter, path, &expand);
8870
8871               if (gtk_tree_model_iter_has_child (tree_view->priv->model, iter)
8872                   && !expand)
8873                 {
8874                   temp->children = _gtk_rbtree_new ();
8875                   temp->children->parent_tree = tree;
8876                   temp->children->parent_node = temp;
8877                   gtk_tree_view_build_tree (tree_view, temp->children, &child, depth + 1, recurse);
8878                 }
8879             }
8880         }
8881
8882       if (gtk_tree_model_iter_has_child (tree_view->priv->model, iter))
8883         {
8884           if ((temp->flags&GTK_RBNODE_IS_PARENT) != GTK_RBNODE_IS_PARENT)
8885             temp->flags ^= GTK_RBNODE_IS_PARENT;
8886         }
8887     }
8888   while (gtk_tree_model_iter_next (tree_view->priv->model, iter));
8889
8890   if (path)
8891     gtk_tree_path_free (path);
8892 }
8893
8894 /* Make sure the node is visible vertically */
8895 static void
8896 gtk_tree_view_clamp_node_visible (GtkTreeView *tree_view,
8897                                   GtkRBTree   *tree,
8898                                   GtkRBNode   *node)
8899 {
8900   gint node_dy, height;
8901   GtkTreePath *path = NULL;
8902
8903   if (!gtk_widget_get_realized (GTK_WIDGET (tree_view)))
8904     return;
8905
8906   /* just return if the node is visible, avoiding a costly expose */
8907   node_dy = _gtk_rbtree_node_find_offset (tree, node);
8908   height = ROW_HEIGHT (tree_view, GTK_RBNODE_GET_HEIGHT (node));
8909   if (! GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_INVALID)
8910       && node_dy >= tree_view->priv->vadjustment->value
8911       && node_dy + height <= (tree_view->priv->vadjustment->value
8912                               + tree_view->priv->vadjustment->page_size))
8913     return;
8914
8915   path = _gtk_tree_view_find_path (tree_view, tree, node);
8916   if (path)
8917     {
8918       /* We process updates because we want to clear old selected items when we scroll.
8919        * if this is removed, we get a "selection streak" at the bottom. */
8920       gdk_window_process_updates (tree_view->priv->bin_window, TRUE);
8921       gtk_tree_view_scroll_to_cell (tree_view, path, NULL, FALSE, 0.0, 0.0);
8922       gtk_tree_path_free (path);
8923     }
8924 }
8925
8926 static void
8927 gtk_tree_view_clamp_column_visible (GtkTreeView       *tree_view,
8928                                     GtkTreeViewColumn *column,
8929                                     gboolean           focus_to_cell)
8930 {
8931   gint x, width;
8932
8933   if (column == NULL)
8934     return;
8935
8936   x = column->button->allocation.x;
8937   width = column->button->allocation.width;
8938
8939   if (width > tree_view->priv->hadjustment->page_size)
8940     {
8941       /* The column is larger than the horizontal page size.  If the
8942        * column has cells which can be focussed individually, then we make
8943        * sure the cell which gets focus is fully visible (if even the
8944        * focus cell is bigger than the page size, we make sure the
8945        * left-hand side of the cell is visible).
8946        *
8947        * If the column does not have those so-called special cells, we
8948        * make sure the left-hand side of the column is visible.
8949        */
8950
8951       if (focus_to_cell && gtk_tree_view_has_special_cell (tree_view))
8952         {
8953           GtkTreePath *cursor_path;
8954           GdkRectangle background_area, cell_area, focus_area;
8955
8956           cursor_path = gtk_tree_row_reference_get_path (tree_view->priv->cursor);
8957
8958           gtk_tree_view_get_cell_area (tree_view,
8959                                        cursor_path, column, &cell_area);
8960           gtk_tree_view_get_background_area (tree_view,
8961                                              cursor_path, column,
8962                                              &background_area);
8963
8964           gtk_tree_path_free (cursor_path);
8965
8966           _gtk_tree_view_column_get_focus_area (column,
8967                                                 &background_area,
8968                                                 &cell_area,
8969                                                 &focus_area);
8970
8971           x = focus_area.x;
8972           width = focus_area.width;
8973
8974           if (width < tree_view->priv->hadjustment->page_size)
8975             {
8976               if ((tree_view->priv->hadjustment->value + tree_view->priv->hadjustment->page_size) < (x + width))
8977                 gtk_adjustment_set_value (tree_view->priv->hadjustment,
8978                                           x + width - tree_view->priv->hadjustment->page_size);
8979               else if (tree_view->priv->hadjustment->value > x)
8980                 gtk_adjustment_set_value (tree_view->priv->hadjustment, x);
8981             }
8982         }
8983
8984       gtk_adjustment_set_value (tree_view->priv->hadjustment, x);
8985     }
8986   else
8987     {
8988       if ((tree_view->priv->hadjustment->value + tree_view->priv->hadjustment->page_size) < (x + width))
8989           gtk_adjustment_set_value (tree_view->priv->hadjustment,
8990                                     x + width - tree_view->priv->hadjustment->page_size);
8991       else if (tree_view->priv->hadjustment->value > x)
8992         gtk_adjustment_set_value (tree_view->priv->hadjustment, x);
8993   }
8994 }
8995
8996 /* This function could be more efficient.  I'll optimize it if profiling seems
8997  * to imply that it is important */
8998 GtkTreePath *
8999 _gtk_tree_view_find_path (GtkTreeView *tree_view,
9000                           GtkRBTree   *tree,
9001                           GtkRBNode   *node)
9002 {
9003   GtkTreePath *path;
9004   GtkRBTree *tmp_tree;
9005   GtkRBNode *tmp_node, *last;
9006   gint count;
9007
9008   path = gtk_tree_path_new ();
9009
9010   g_return_val_if_fail (node != NULL, path);
9011   g_return_val_if_fail (node != tree->nil, path);
9012
9013   count = 1 + node->left->count;
9014
9015   last = node;
9016   tmp_node = node->parent;
9017   tmp_tree = tree;
9018   while (tmp_tree)
9019     {
9020       while (tmp_node != tmp_tree->nil)
9021         {
9022           if (tmp_node->right == last)
9023             count += 1 + tmp_node->left->count;
9024           last = tmp_node;
9025           tmp_node = tmp_node->parent;
9026         }
9027       gtk_tree_path_prepend_index (path, count - 1);
9028       last = tmp_tree->parent_node;
9029       tmp_tree = tmp_tree->parent_tree;
9030       if (last)
9031         {
9032           count = 1 + last->left->count;
9033           tmp_node = last->parent;
9034         }
9035     }
9036   return path;
9037 }
9038
9039 /* Returns TRUE if we ran out of tree before finding the path.  If the path is
9040  * invalid (ie. points to a node that's not in the tree), *tree and *node are
9041  * both set to NULL.
9042  */
9043 gboolean
9044 _gtk_tree_view_find_node (GtkTreeView  *tree_view,
9045                           GtkTreePath  *path,
9046                           GtkRBTree   **tree,
9047                           GtkRBNode   **node)
9048 {
9049   GtkRBNode *tmpnode = NULL;
9050   GtkRBTree *tmptree = tree_view->priv->tree;
9051   gint *indices = gtk_tree_path_get_indices (path);
9052   gint depth = gtk_tree_path_get_depth (path);
9053   gint i = 0;
9054
9055   *node = NULL;
9056   *tree = NULL;
9057
9058   if (depth == 0 || tmptree == NULL)
9059     return FALSE;
9060   do
9061     {
9062       tmpnode = _gtk_rbtree_find_count (tmptree, indices[i] + 1);
9063       ++i;
9064       if (tmpnode == NULL)
9065         {
9066           *tree = NULL;
9067           *node = NULL;
9068           return FALSE;
9069         }
9070       if (i >= depth)
9071         {
9072           *tree = tmptree;
9073           *node = tmpnode;
9074           return FALSE;
9075         }
9076       *tree = tmptree;
9077       *node = tmpnode;
9078       tmptree = tmpnode->children;
9079       if (tmptree == NULL)
9080         return TRUE;
9081     }
9082   while (1);
9083 }
9084
9085 static gboolean
9086 gtk_tree_view_is_expander_column (GtkTreeView       *tree_view,
9087                                   GtkTreeViewColumn *column)
9088 {
9089   GList *list;
9090
9091   if (GTK_TREE_VIEW_FLAG_SET (tree_view, GTK_TREE_VIEW_IS_LIST))
9092     return FALSE;
9093
9094   if (tree_view->priv->expander_column != NULL)
9095     {
9096       if (tree_view->priv->expander_column == column)
9097         return TRUE;
9098       return FALSE;
9099     }
9100   else
9101     {
9102       for (list = tree_view->priv->columns;
9103            list;
9104            list = list->next)
9105         if (((GtkTreeViewColumn *)list->data)->visible)
9106           break;
9107       if (list && list->data == column)
9108         return TRUE;
9109     }
9110   return FALSE;
9111 }
9112
9113 static void
9114 gtk_tree_view_add_move_binding (GtkBindingSet  *binding_set,
9115                                 guint           keyval,
9116                                 guint           modmask,
9117                                 gboolean        add_shifted_binding,
9118                                 GtkMovementStep step,
9119                                 gint            count)
9120 {
9121
9122   gtk_binding_entry_add_signal (binding_set, keyval, modmask,
9123                                 "move-cursor", 2,
9124                                 G_TYPE_ENUM, step,
9125                                 G_TYPE_INT, count);
9126
9127   if (add_shifted_binding)
9128     gtk_binding_entry_add_signal (binding_set, keyval, GDK_SHIFT_MASK,
9129                                   "move-cursor", 2,
9130                                   G_TYPE_ENUM, step,
9131                                   G_TYPE_INT, count);
9132
9133   if ((modmask & GDK_CONTROL_MASK) == GDK_CONTROL_MASK)
9134    return;
9135
9136   gtk_binding_entry_add_signal (binding_set, keyval, GDK_CONTROL_MASK | GDK_SHIFT_MASK,
9137                                 "move-cursor", 2,
9138                                 G_TYPE_ENUM, step,
9139                                 G_TYPE_INT, count);
9140
9141   gtk_binding_entry_add_signal (binding_set, keyval, GDK_CONTROL_MASK,
9142                                 "move-cursor", 2,
9143                                 G_TYPE_ENUM, step,
9144                                 G_TYPE_INT, count);
9145 }
9146
9147 static gint
9148 gtk_tree_view_unref_tree_helper (GtkTreeModel *model,
9149                                  GtkTreeIter  *iter,
9150                                  GtkRBTree    *tree,
9151                                  GtkRBNode    *node)
9152 {
9153   gint retval = FALSE;
9154   do
9155     {
9156       g_return_val_if_fail (node != NULL, FALSE);
9157
9158       if (node->children)
9159         {
9160           GtkTreeIter child;
9161           GtkRBTree *new_tree;
9162           GtkRBNode *new_node;
9163
9164           new_tree = node->children;
9165           new_node = new_tree->root;
9166
9167           while (new_node && new_node->left != new_tree->nil)
9168             new_node = new_node->left;
9169
9170           if (!gtk_tree_model_iter_children (model, &child, iter))
9171             return FALSE;
9172
9173           retval = retval || gtk_tree_view_unref_tree_helper (model, &child, new_tree, new_node);
9174         }
9175
9176       if (GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_SELECTED))
9177         retval = TRUE;
9178       gtk_tree_model_unref_node (model, iter);
9179       node = _gtk_rbtree_next (tree, node);
9180     }
9181   while (gtk_tree_model_iter_next (model, iter));
9182
9183   return retval;
9184 }
9185
9186 static gint
9187 gtk_tree_view_unref_and_check_selection_tree (GtkTreeView *tree_view,
9188                                               GtkRBTree   *tree)
9189 {
9190   GtkTreeIter iter;
9191   GtkTreePath *path;
9192   GtkRBNode *node;
9193   gint retval;
9194
9195   if (!tree)
9196     return FALSE;
9197
9198   node = tree->root;
9199   while (node && node->left != tree->nil)
9200     node = node->left;
9201
9202   g_return_val_if_fail (node != NULL, FALSE);
9203   path = _gtk_tree_view_find_path (tree_view, tree, node);
9204   gtk_tree_model_get_iter (GTK_TREE_MODEL (tree_view->priv->model),
9205                            &iter, path);
9206   retval = gtk_tree_view_unref_tree_helper (GTK_TREE_MODEL (tree_view->priv->model), &iter, tree, node);
9207   gtk_tree_path_free (path);
9208
9209   return retval;
9210 }
9211
9212 static void
9213 gtk_tree_view_set_column_drag_info (GtkTreeView       *tree_view,
9214                                     GtkTreeViewColumn *column)
9215 {
9216   GtkTreeViewColumn *left_column;
9217   GtkTreeViewColumn *cur_column = NULL;
9218   GtkTreeViewColumnReorder *reorder;
9219   gboolean rtl;
9220   GList *tmp_list;
9221   gint left;
9222
9223   /* We want to precalculate the motion list such that we know what column slots
9224    * are available.
9225    */
9226   left_column = NULL;
9227   rtl = (gtk_widget_get_direction (GTK_WIDGET (tree_view)) == GTK_TEXT_DIR_RTL);
9228
9229   /* First, identify all possible drop spots */
9230   if (rtl)
9231     tmp_list = g_list_last (tree_view->priv->columns);
9232   else
9233     tmp_list = g_list_first (tree_view->priv->columns);
9234
9235   while (tmp_list)
9236     {
9237       cur_column = GTK_TREE_VIEW_COLUMN (tmp_list->data);
9238       tmp_list = rtl?g_list_previous (tmp_list):g_list_next (tmp_list);
9239
9240       if (cur_column->visible == FALSE)
9241         continue;
9242
9243       /* If it's not the column moving and func tells us to skip over the column, we continue. */
9244       if (left_column != column && cur_column != column &&
9245           tree_view->priv->column_drop_func &&
9246           ! tree_view->priv->column_drop_func (tree_view, column, left_column, cur_column, tree_view->priv->column_drop_func_data))
9247         {
9248           left_column = cur_column;
9249           continue;
9250         }
9251       reorder = g_slice_new0 (GtkTreeViewColumnReorder);
9252       reorder->left_column = left_column;
9253       left_column = reorder->right_column = cur_column;
9254
9255       tree_view->priv->column_drag_info = g_list_append (tree_view->priv->column_drag_info, reorder);
9256     }
9257
9258   /* Add the last one */
9259   if (tree_view->priv->column_drop_func == NULL ||
9260       ((left_column != column) &&
9261        tree_view->priv->column_drop_func (tree_view, column, left_column, NULL, tree_view->priv->column_drop_func_data)))
9262     {
9263       reorder = g_slice_new0 (GtkTreeViewColumnReorder);
9264       reorder->left_column = left_column;
9265       reorder->right_column = NULL;
9266       tree_view->priv->column_drag_info = g_list_append (tree_view->priv->column_drag_info, reorder);
9267     }
9268
9269   /* We quickly check to see if it even makes sense to reorder columns. */
9270   /* If there is nothing that can be moved, then we return */
9271
9272   if (tree_view->priv->column_drag_info == NULL)
9273     return;
9274
9275   /* We know there are always 2 slots possbile, as you can always return column. */
9276   /* If that's all there is, return */
9277   if (tree_view->priv->column_drag_info->next == NULL ||
9278       (tree_view->priv->column_drag_info->next->next == NULL &&
9279        ((GtkTreeViewColumnReorder *)tree_view->priv->column_drag_info->data)->right_column == column &&
9280        ((GtkTreeViewColumnReorder *)tree_view->priv->column_drag_info->next->data)->left_column == column))
9281     {
9282       for (tmp_list = tree_view->priv->column_drag_info; tmp_list; tmp_list = tmp_list->next)
9283         g_slice_free (GtkTreeViewColumnReorder, tmp_list->data);
9284       g_list_free (tree_view->priv->column_drag_info);
9285       tree_view->priv->column_drag_info = NULL;
9286       return;
9287     }
9288   /* We fill in the ranges for the columns, now that we've isolated them */
9289   left = - TREE_VIEW_COLUMN_DRAG_DEAD_MULTIPLIER (tree_view);
9290
9291   for (tmp_list = tree_view->priv->column_drag_info; tmp_list; tmp_list = tmp_list->next)
9292     {
9293       reorder = (GtkTreeViewColumnReorder *) tmp_list->data;
9294
9295       reorder->left_align = left;
9296       if (tmp_list->next != NULL)
9297         {
9298           g_assert (tmp_list->next->data);
9299           left = reorder->right_align = (reorder->right_column->button->allocation.x +
9300                                          reorder->right_column->button->allocation.width +
9301                                          ((GtkTreeViewColumnReorder *)tmp_list->next->data)->left_column->button->allocation.x)/2;
9302         }
9303       else
9304         {
9305           gint width;
9306
9307           gdk_drawable_get_size (tree_view->priv->header_window, &width, NULL);
9308           reorder->right_align = width + TREE_VIEW_COLUMN_DRAG_DEAD_MULTIPLIER (tree_view);
9309         }
9310     }
9311 }
9312
9313 void
9314 _gtk_tree_view_column_start_drag (GtkTreeView       *tree_view,
9315                                   GtkTreeViewColumn *column,
9316                                   GdkDevice         *device)
9317 {
9318   GdkEvent *send_event;
9319   GtkAllocation allocation;
9320   gint x, y, width, height;
9321   GdkScreen *screen = gtk_widget_get_screen (GTK_WIDGET (tree_view));
9322   GdkDisplay *display = gdk_screen_get_display (screen);
9323
9324   g_return_if_fail (tree_view->priv->column_drag_info == NULL);
9325   g_return_if_fail (tree_view->priv->cur_reorder == NULL);
9326
9327   gtk_tree_view_set_column_drag_info (tree_view, column);
9328
9329   if (tree_view->priv->column_drag_info == NULL)
9330     return;
9331
9332   if (tree_view->priv->drag_window == NULL)
9333     {
9334       GdkWindowAttr attributes;
9335       guint attributes_mask;
9336
9337       attributes.window_type = GDK_WINDOW_CHILD;
9338       attributes.wclass = GDK_INPUT_OUTPUT;
9339       attributes.x = column->button->allocation.x;
9340       attributes.y = 0;
9341       attributes.width = column->button->allocation.width;
9342       attributes.height = column->button->allocation.height;
9343       attributes.visual = gtk_widget_get_visual (GTK_WIDGET (tree_view));
9344       attributes.colormap = gtk_widget_get_colormap (GTK_WIDGET (tree_view));
9345       attributes.event_mask = GDK_VISIBILITY_NOTIFY_MASK | GDK_EXPOSURE_MASK | GDK_POINTER_MOTION_MASK;
9346       attributes_mask = GDK_WA_X | GDK_WA_Y | GDK_WA_VISUAL | GDK_WA_COLORMAP;
9347
9348       tree_view->priv->drag_window = gdk_window_new (tree_view->priv->bin_window,
9349                                                      &attributes,
9350                                                      attributes_mask);
9351       gdk_window_set_user_data (tree_view->priv->drag_window, GTK_WIDGET (tree_view));
9352     }
9353
9354   gdk_display_pointer_ungrab (display, GDK_CURRENT_TIME);
9355   gdk_display_keyboard_ungrab (display, GDK_CURRENT_TIME);
9356
9357   gtk_grab_remove (column->button);
9358
9359   send_event = gdk_event_new (GDK_LEAVE_NOTIFY);
9360   send_event->crossing.send_event = TRUE;
9361   send_event->crossing.window = g_object_ref (GTK_BUTTON (column->button)->event_window);
9362   send_event->crossing.subwindow = NULL;
9363   send_event->crossing.detail = GDK_NOTIFY_ANCESTOR;
9364   send_event->crossing.time = GDK_CURRENT_TIME;
9365   gdk_event_set_device (send_event, device);
9366
9367   gtk_propagate_event (column->button, send_event);
9368   gdk_event_free (send_event);
9369
9370   send_event = gdk_event_new (GDK_BUTTON_RELEASE);
9371   send_event->button.window = g_object_ref (gdk_screen_get_root_window (screen));
9372   send_event->button.send_event = TRUE;
9373   send_event->button.time = GDK_CURRENT_TIME;
9374   send_event->button.x = -1;
9375   send_event->button.y = -1;
9376   send_event->button.axes = NULL;
9377   send_event->button.state = 0;
9378   send_event->button.button = 1;
9379   send_event->button.x_root = 0;
9380   send_event->button.y_root = 0;
9381   gdk_event_set_device (send_event, device);
9382
9383   gtk_propagate_event (column->button, send_event);
9384   gdk_event_free (send_event);
9385
9386   /* Kids, don't try this at home */
9387   g_object_ref (column->button);
9388   gtk_container_remove (GTK_CONTAINER (tree_view), column->button);
9389   gtk_widget_set_parent_window (column->button, tree_view->priv->drag_window);
9390   gtk_widget_set_parent (column->button, GTK_WIDGET (tree_view));
9391   g_object_unref (column->button);
9392
9393   tree_view->priv->drag_column_x = column->button->allocation.x;
9394   allocation = column->button->allocation;
9395   allocation.x = 0;
9396   gtk_widget_size_allocate (column->button, &allocation);
9397   gtk_widget_set_parent_window (column->button, tree_view->priv->drag_window);
9398
9399   tree_view->priv->drag_column = column;
9400   gdk_window_show (tree_view->priv->drag_window);
9401
9402   gdk_window_get_origin (tree_view->priv->header_window, &x, &y);
9403   gdk_drawable_get_size (tree_view->priv->header_window, &width, &height);
9404
9405   gtk_widget_grab_focus (GTK_WIDGET (tree_view));
9406   while (gtk_events_pending ())
9407     gtk_main_iteration ();
9408
9409   GTK_TREE_VIEW_SET_FLAG (tree_view, GTK_TREE_VIEW_IN_COLUMN_DRAG);
9410   gdk_pointer_grab (tree_view->priv->drag_window,
9411                     FALSE,
9412                     GDK_POINTER_MOTION_MASK|GDK_BUTTON_RELEASE_MASK,
9413                     NULL, NULL, GDK_CURRENT_TIME);
9414   gdk_keyboard_grab (tree_view->priv->drag_window,
9415                      FALSE,
9416                      GDK_CURRENT_TIME);
9417 }
9418
9419 static void
9420 gtk_tree_view_queue_draw_arrow (GtkTreeView        *tree_view,
9421                                 GtkRBTree          *tree,
9422                                 GtkRBNode          *node,
9423                                 const GdkRectangle *clip_rect)
9424 {
9425   GdkRectangle rect;
9426
9427   if (!gtk_widget_get_realized (GTK_WIDGET (tree_view)))
9428     return;
9429
9430   rect.x = 0;
9431   rect.width = MAX (tree_view->priv->expander_size, MAX (tree_view->priv->width, GTK_WIDGET (tree_view)->allocation.width));
9432
9433   rect.y = BACKGROUND_FIRST_PIXEL (tree_view, tree, node);
9434   rect.height = ROW_HEIGHT (tree_view, BACKGROUND_HEIGHT (node));
9435
9436   if (clip_rect)
9437     {
9438       GdkRectangle new_rect;
9439
9440       gdk_rectangle_intersect (clip_rect, &rect, &new_rect);
9441
9442       gdk_window_invalidate_rect (tree_view->priv->bin_window, &new_rect, TRUE);
9443     }
9444   else
9445     {
9446       gdk_window_invalidate_rect (tree_view->priv->bin_window, &rect, TRUE);
9447     }
9448 }
9449
9450 void
9451 _gtk_tree_view_queue_draw_node (GtkTreeView        *tree_view,
9452                                 GtkRBTree          *tree,
9453                                 GtkRBNode          *node,
9454                                 const GdkRectangle *clip_rect)
9455 {
9456   GdkRectangle rect;
9457
9458   if (!gtk_widget_get_realized (GTK_WIDGET (tree_view)))
9459     return;
9460
9461   rect.x = 0;
9462   rect.width = MAX (tree_view->priv->width, GTK_WIDGET (tree_view)->allocation.width);
9463
9464   rect.y = BACKGROUND_FIRST_PIXEL (tree_view, tree, node);
9465   rect.height = ROW_HEIGHT (tree_view, BACKGROUND_HEIGHT (node));
9466
9467   if (clip_rect)
9468     {
9469       GdkRectangle new_rect;
9470
9471       gdk_rectangle_intersect (clip_rect, &rect, &new_rect);
9472
9473       gdk_window_invalidate_rect (tree_view->priv->bin_window, &new_rect, TRUE);
9474     }
9475   else
9476     {
9477       gdk_window_invalidate_rect (tree_view->priv->bin_window, &rect, TRUE);
9478     }
9479 }
9480
9481 static void
9482 gtk_tree_view_queue_draw_path (GtkTreeView        *tree_view,
9483                                GtkTreePath        *path,
9484                                const GdkRectangle *clip_rect)
9485 {
9486   GtkRBTree *tree = NULL;
9487   GtkRBNode *node = NULL;
9488
9489   _gtk_tree_view_find_node (tree_view, path, &tree, &node);
9490
9491   if (tree)
9492     _gtk_tree_view_queue_draw_node (tree_view, tree, node, clip_rect);
9493 }
9494
9495 /* x and y are the mouse position
9496  */
9497 static void
9498 gtk_tree_view_draw_arrow (GtkTreeView *tree_view,
9499                           GtkRBTree   *tree,
9500                           GtkRBNode   *node,
9501                           /* in bin_window coordinates */
9502                           gint         x,
9503                           gint         y)
9504 {
9505   GdkRectangle area;
9506   GtkStateType state;
9507   GtkWidget *widget;
9508   gint x_offset = 0;
9509   gint x2;
9510   gint vertical_separator;
9511   gint expander_size;
9512   GtkExpanderStyle expander_style;
9513
9514   widget = GTK_WIDGET (tree_view);
9515
9516   gtk_widget_style_get (widget,
9517                         "vertical-separator", &vertical_separator,
9518                         NULL);
9519   expander_size = tree_view->priv->expander_size - EXPANDER_EXTRA_PADDING;
9520
9521   if (! GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_PARENT))
9522     return;
9523
9524   gtk_tree_view_get_arrow_xrange (tree_view, tree, &x_offset, &x2);
9525
9526   area.x = x_offset;
9527   area.y = CELL_FIRST_PIXEL (tree_view, tree, node, vertical_separator);
9528   area.width = expander_size + 2;
9529   area.height = MAX (CELL_HEIGHT (node, vertical_separator), (expander_size - vertical_separator));
9530
9531   if (gtk_widget_get_state (widget) == GTK_STATE_INSENSITIVE)
9532     {
9533       state = GTK_STATE_INSENSITIVE;
9534     }
9535   else if (node == tree_view->priv->button_pressed_node)
9536     {
9537       if (x >= area.x && x <= (area.x + area.width) &&
9538           y >= area.y && y <= (area.y + area.height))
9539         state = GTK_STATE_ACTIVE;
9540       else
9541         state = GTK_STATE_NORMAL;
9542     }
9543   else
9544     {
9545       if (node == tree_view->priv->prelight_node &&
9546           GTK_TREE_VIEW_FLAG_SET (tree_view, GTK_TREE_VIEW_ARROW_PRELIT))
9547         state = GTK_STATE_PRELIGHT;
9548       else
9549         state = GTK_STATE_NORMAL;
9550     }
9551
9552   if (GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_SEMI_EXPANDED))
9553     expander_style = GTK_EXPANDER_SEMI_EXPANDED;
9554   else if (GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_SEMI_COLLAPSED))
9555     expander_style = GTK_EXPANDER_SEMI_COLLAPSED;
9556   else if (node->children != NULL)
9557     expander_style = GTK_EXPANDER_EXPANDED;
9558   else
9559     expander_style = GTK_EXPANDER_COLLAPSED;
9560
9561   gtk_paint_expander (widget->style,
9562                       tree_view->priv->bin_window,
9563                       state,
9564                       &area,
9565                       widget,
9566                       "treeview",
9567                       area.x + area.width / 2,
9568                       area.y + area.height / 2,
9569                       expander_style);
9570 }
9571
9572 static void
9573 gtk_tree_view_focus_to_cursor (GtkTreeView *tree_view)
9574
9575 {
9576   GtkTreePath *cursor_path;
9577
9578   if ((tree_view->priv->tree == NULL) ||
9579       (! gtk_widget_get_realized (GTK_WIDGET (tree_view))))
9580     return;
9581
9582   cursor_path = NULL;
9583   if (tree_view->priv->cursor)
9584     cursor_path = gtk_tree_row_reference_get_path (tree_view->priv->cursor);
9585
9586   if (cursor_path == NULL)
9587     {
9588       /* Consult the selection before defaulting to the
9589        * first focusable element
9590        */
9591       GList *selected_rows;
9592       GtkTreeModel *model;
9593       GtkTreeSelection *selection;
9594
9595       selection = gtk_tree_view_get_selection (tree_view);
9596       selected_rows = gtk_tree_selection_get_selected_rows (selection, &model);
9597
9598       if (selected_rows)
9599         {
9600           cursor_path = gtk_tree_path_copy((const GtkTreePath *)(selected_rows->data));
9601           g_list_foreach (selected_rows, (GFunc)gtk_tree_path_free, NULL);
9602           g_list_free (selected_rows);
9603         }
9604       else
9605         {
9606           cursor_path = gtk_tree_path_new_first ();
9607           search_first_focusable_path (tree_view, &cursor_path,
9608                                        TRUE, NULL, NULL);
9609         }
9610
9611       gtk_tree_row_reference_free (tree_view->priv->cursor);
9612       tree_view->priv->cursor = NULL;
9613
9614       if (cursor_path)
9615         {
9616           if (tree_view->priv->selection->type == GTK_SELECTION_MULTIPLE)
9617             gtk_tree_view_real_set_cursor (tree_view, cursor_path, FALSE, FALSE);
9618           else
9619             gtk_tree_view_real_set_cursor (tree_view, cursor_path, TRUE, FALSE);
9620         }
9621     }
9622
9623   if (cursor_path)
9624     {
9625       GTK_TREE_VIEW_SET_FLAG (tree_view, GTK_TREE_VIEW_DRAW_KEYFOCUS);
9626
9627       gtk_tree_view_queue_draw_path (tree_view, cursor_path, NULL);
9628       gtk_tree_path_free (cursor_path);
9629
9630       if (tree_view->priv->focus_column == NULL)
9631         {
9632           GList *list;
9633           for (list = tree_view->priv->columns; list; list = list->next)
9634             {
9635               if (GTK_TREE_VIEW_COLUMN (list->data)->visible)
9636                 {
9637                   tree_view->priv->focus_column = GTK_TREE_VIEW_COLUMN (list->data);
9638                   break;
9639                 }
9640             }
9641         }
9642     }
9643 }
9644
9645 static void
9646 gtk_tree_view_move_cursor_up_down (GtkTreeView *tree_view,
9647                                    gint         count)
9648 {
9649   gint selection_count;
9650   GtkRBTree *cursor_tree = NULL;
9651   GtkRBNode *cursor_node = NULL;
9652   GtkRBTree *new_cursor_tree = NULL;
9653   GtkRBNode *new_cursor_node = NULL;
9654   GtkTreePath *cursor_path = NULL;
9655   gboolean grab_focus = TRUE;
9656   gboolean selectable;
9657
9658   if (! gtk_widget_has_focus (GTK_WIDGET (tree_view)))
9659     return;
9660
9661   cursor_path = NULL;
9662   if (!gtk_tree_row_reference_valid (tree_view->priv->cursor))
9663     /* FIXME: we lost the cursor; should we get the first? */
9664     return;
9665
9666   cursor_path = gtk_tree_row_reference_get_path (tree_view->priv->cursor);
9667   _gtk_tree_view_find_node (tree_view, cursor_path,
9668                             &cursor_tree, &cursor_node);
9669
9670   if (cursor_tree == NULL)
9671     /* FIXME: we lost the cursor; should we get the first? */
9672     return;
9673
9674   selection_count = gtk_tree_selection_count_selected_rows (tree_view->priv->selection);
9675   selectable = _gtk_tree_selection_row_is_selectable (tree_view->priv->selection,
9676                                                       cursor_node,
9677                                                       cursor_path);
9678
9679   if (selection_count == 0
9680       && tree_view->priv->selection->type != GTK_SELECTION_NONE
9681       && !tree_view->priv->ctrl_pressed
9682       && selectable)
9683     {
9684       /* Don't move the cursor, but just select the current node */
9685       new_cursor_tree = cursor_tree;
9686       new_cursor_node = cursor_node;
9687     }
9688   else
9689     {
9690       if (count == -1)
9691         _gtk_rbtree_prev_full (cursor_tree, cursor_node,
9692                                &new_cursor_tree, &new_cursor_node);
9693       else
9694         _gtk_rbtree_next_full (cursor_tree, cursor_node,
9695                                &new_cursor_tree, &new_cursor_node);
9696     }
9697
9698   gtk_tree_path_free (cursor_path);
9699
9700   if (new_cursor_node)
9701     {
9702       cursor_path = _gtk_tree_view_find_path (tree_view,
9703                                               new_cursor_tree, new_cursor_node);
9704
9705       search_first_focusable_path (tree_view, &cursor_path,
9706                                    (count != -1),
9707                                    &new_cursor_tree,
9708                                    &new_cursor_node);
9709
9710       if (cursor_path)
9711         gtk_tree_path_free (cursor_path);
9712     }
9713
9714   /*
9715    * If the list has only one item and multi-selection is set then select
9716    * the row (if not yet selected).
9717    */
9718   if (tree_view->priv->selection->type == GTK_SELECTION_MULTIPLE &&
9719       new_cursor_node == NULL)
9720     {
9721       if (count == -1)
9722         _gtk_rbtree_next_full (cursor_tree, cursor_node,
9723                                &new_cursor_tree, &new_cursor_node);
9724       else
9725         _gtk_rbtree_prev_full (cursor_tree, cursor_node,
9726                                &new_cursor_tree, &new_cursor_node);
9727
9728       if (new_cursor_node == NULL
9729           && !GTK_RBNODE_FLAG_SET (cursor_node, GTK_RBNODE_IS_SELECTED))
9730         {
9731           new_cursor_node = cursor_node;
9732           new_cursor_tree = cursor_tree;
9733         }
9734       else
9735         {
9736           new_cursor_node = NULL;
9737         }
9738     }
9739
9740   if (new_cursor_node)
9741     {
9742       cursor_path = _gtk_tree_view_find_path (tree_view, new_cursor_tree, new_cursor_node);
9743       gtk_tree_view_real_set_cursor (tree_view, cursor_path, TRUE, TRUE);
9744       gtk_tree_path_free (cursor_path);
9745     }
9746   else
9747     {
9748       gtk_tree_view_clamp_node_visible (tree_view, cursor_tree, cursor_node);
9749
9750       if (!tree_view->priv->shift_pressed)
9751         {
9752           if (! gtk_widget_keynav_failed (GTK_WIDGET (tree_view),
9753                                           count < 0 ?
9754                                           GTK_DIR_UP : GTK_DIR_DOWN))
9755             {
9756               GtkWidget *toplevel = gtk_widget_get_toplevel (GTK_WIDGET (tree_view));
9757
9758               if (toplevel)
9759                 gtk_widget_child_focus (toplevel,
9760                                         count < 0 ?
9761                                         GTK_DIR_TAB_BACKWARD :
9762                                         GTK_DIR_TAB_FORWARD);
9763
9764               grab_focus = FALSE;
9765             }
9766         }
9767       else
9768         {
9769           gtk_widget_error_bell (GTK_WIDGET (tree_view));
9770         }
9771     }
9772
9773   if (grab_focus)
9774     gtk_widget_grab_focus (GTK_WIDGET (tree_view));
9775 }
9776
9777 static void
9778 gtk_tree_view_move_cursor_page_up_down (GtkTreeView *tree_view,
9779                                         gint         count)
9780 {
9781   GtkRBTree *cursor_tree = NULL;
9782   GtkRBNode *cursor_node = NULL;
9783   GtkTreePath *old_cursor_path = NULL;
9784   GtkTreePath *cursor_path = NULL;
9785   GtkRBTree *start_cursor_tree = NULL;
9786   GtkRBNode *start_cursor_node = NULL;
9787   gint y;
9788   gint window_y;
9789   gint vertical_separator;
9790
9791   if (!gtk_widget_has_focus (GTK_WIDGET (tree_view)))
9792     return;
9793
9794   if (gtk_tree_row_reference_valid (tree_view->priv->cursor))
9795     old_cursor_path = gtk_tree_row_reference_get_path (tree_view->priv->cursor);
9796   else
9797     /* This is sorta weird.  Focus in should give us a cursor */
9798     return;
9799
9800   gtk_widget_style_get (GTK_WIDGET (tree_view), "vertical-separator", &vertical_separator, NULL);
9801   _gtk_tree_view_find_node (tree_view, old_cursor_path,
9802                             &cursor_tree, &cursor_node);
9803
9804   if (cursor_tree == NULL)
9805     {
9806       /* FIXME: we lost the cursor.  Should we try to get one? */
9807       gtk_tree_path_free (old_cursor_path);
9808       return;
9809     }
9810   g_return_if_fail (cursor_node != NULL);
9811
9812   y = _gtk_rbtree_node_find_offset (cursor_tree, cursor_node);
9813   window_y = RBTREE_Y_TO_TREE_WINDOW_Y (tree_view, y);
9814   y += tree_view->priv->cursor_offset;
9815   y += count * (int)tree_view->priv->vadjustment->page_increment;
9816   y = CLAMP (y, (gint)tree_view->priv->vadjustment->lower,  (gint)tree_view->priv->vadjustment->upper - vertical_separator);
9817
9818   if (y >= tree_view->priv->height)
9819     y = tree_view->priv->height - 1;
9820
9821   tree_view->priv->cursor_offset =
9822     _gtk_rbtree_find_offset (tree_view->priv->tree, y,
9823                              &cursor_tree, &cursor_node);
9824
9825   if (cursor_tree == NULL)
9826     {
9827       /* FIXME: we lost the cursor.  Should we try to get one? */
9828       gtk_tree_path_free (old_cursor_path);
9829       return;
9830     }
9831
9832   if (tree_view->priv->cursor_offset > BACKGROUND_HEIGHT (cursor_node))
9833     {
9834       _gtk_rbtree_next_full (cursor_tree, cursor_node,
9835                              &cursor_tree, &cursor_node);
9836       tree_view->priv->cursor_offset -= BACKGROUND_HEIGHT (cursor_node);
9837     }
9838
9839   y -= tree_view->priv->cursor_offset;
9840   cursor_path = _gtk_tree_view_find_path (tree_view, cursor_tree, cursor_node);
9841
9842   start_cursor_tree = cursor_tree;
9843   start_cursor_node = cursor_node;
9844
9845   if (! search_first_focusable_path (tree_view, &cursor_path,
9846                                      (count != -1),
9847                                      &cursor_tree, &cursor_node))
9848     {
9849       /* It looks like we reached the end of the view without finding
9850        * a focusable row.  We will step backwards to find the last
9851        * focusable row.
9852        */
9853       cursor_tree = start_cursor_tree;
9854       cursor_node = start_cursor_node;
9855       cursor_path = _gtk_tree_view_find_path (tree_view, cursor_tree, cursor_node);
9856
9857       search_first_focusable_path (tree_view, &cursor_path,
9858                                    (count == -1),
9859                                    &cursor_tree, &cursor_node);
9860     }
9861
9862   if (!cursor_path)
9863     goto cleanup;
9864
9865   /* update y */
9866   y = _gtk_rbtree_node_find_offset (cursor_tree, cursor_node);
9867
9868   gtk_tree_view_real_set_cursor (tree_view, cursor_path, TRUE, FALSE);
9869
9870   y -= window_y;
9871   gtk_tree_view_scroll_to_point (tree_view, -1, y);
9872   gtk_tree_view_clamp_node_visible (tree_view, cursor_tree, cursor_node);
9873   _gtk_tree_view_queue_draw_node (tree_view, cursor_tree, cursor_node, NULL);
9874
9875   if (!gtk_tree_path_compare (old_cursor_path, cursor_path))
9876     gtk_widget_error_bell (GTK_WIDGET (tree_view));
9877
9878   gtk_widget_grab_focus (GTK_WIDGET (tree_view));
9879
9880 cleanup:
9881   gtk_tree_path_free (old_cursor_path);
9882   gtk_tree_path_free (cursor_path);
9883 }
9884
9885 static void
9886 gtk_tree_view_move_cursor_left_right (GtkTreeView *tree_view,
9887                                       gint         count)
9888 {
9889   GtkRBTree *cursor_tree = NULL;
9890   GtkRBNode *cursor_node = NULL;
9891   GtkTreePath *cursor_path = NULL;
9892   GtkTreeViewColumn *column;
9893   GtkTreeIter iter;
9894   GList *list;
9895   gboolean found_column = FALSE;
9896   gboolean rtl;
9897
9898   rtl = (gtk_widget_get_direction (GTK_WIDGET (tree_view)) == GTK_TEXT_DIR_RTL);
9899
9900   if (!gtk_widget_has_focus (GTK_WIDGET (tree_view)))
9901     return;
9902
9903   if (gtk_tree_row_reference_valid (tree_view->priv->cursor))
9904     cursor_path = gtk_tree_row_reference_get_path (tree_view->priv->cursor);
9905   else
9906     return;
9907
9908   _gtk_tree_view_find_node (tree_view, cursor_path, &cursor_tree, &cursor_node);
9909   if (cursor_tree == NULL)
9910     return;
9911   if (gtk_tree_model_get_iter (tree_view->priv->model, &iter, cursor_path) == FALSE)
9912     {
9913       gtk_tree_path_free (cursor_path);
9914       return;
9915     }
9916   gtk_tree_path_free (cursor_path);
9917
9918   list = rtl ? g_list_last (tree_view->priv->columns) : g_list_first (tree_view->priv->columns);
9919   if (tree_view->priv->focus_column)
9920     {
9921       for (; list; list = (rtl ? list->prev : list->next))
9922         {
9923           if (list->data == tree_view->priv->focus_column)
9924             break;
9925         }
9926     }
9927
9928   while (list)
9929     {
9930       gboolean left, right;
9931
9932       column = list->data;
9933       if (column->visible == FALSE)
9934         goto loop_end;
9935
9936       gtk_tree_view_column_cell_set_cell_data (column,
9937                                                tree_view->priv->model,
9938                                                &iter,
9939                                                GTK_RBNODE_FLAG_SET (cursor_node, GTK_RBNODE_IS_PARENT),
9940                                                cursor_node->children?TRUE:FALSE);
9941
9942       if (rtl)
9943         {
9944           right = list->prev ? TRUE : FALSE;
9945           left = list->next ? TRUE : FALSE;
9946         }
9947       else
9948         {
9949           left = list->prev ? TRUE : FALSE;
9950           right = list->next ? TRUE : FALSE;
9951         }
9952
9953       if (_gtk_tree_view_column_cell_focus (column, count, left, right))
9954         {
9955           tree_view->priv->focus_column = column;
9956           found_column = TRUE;
9957           break;
9958         }
9959     loop_end:
9960       if (count == 1)
9961         list = rtl ? list->prev : list->next;
9962       else
9963         list = rtl ? list->next : list->prev;
9964     }
9965
9966   if (found_column)
9967     {
9968       if (!gtk_tree_view_has_special_cell (tree_view))
9969         _gtk_tree_view_queue_draw_node (tree_view,
9970                                         cursor_tree,
9971                                         cursor_node,
9972                                         NULL);
9973       g_signal_emit (tree_view, tree_view_signals[CURSOR_CHANGED], 0);
9974       gtk_widget_grab_focus (GTK_WIDGET (tree_view));
9975     }
9976   else
9977     {
9978       gtk_widget_error_bell (GTK_WIDGET (tree_view));
9979     }
9980
9981   gtk_tree_view_clamp_column_visible (tree_view,
9982                                       tree_view->priv->focus_column, TRUE);
9983 }
9984
9985 static void
9986 gtk_tree_view_move_cursor_start_end (GtkTreeView *tree_view,
9987                                      gint         count)
9988 {
9989   GtkRBTree *cursor_tree;
9990   GtkRBNode *cursor_node;
9991   GtkTreePath *path;
9992   GtkTreePath *old_path;
9993
9994   if (!gtk_widget_has_focus (GTK_WIDGET (tree_view)))
9995     return;
9996
9997   g_return_if_fail (tree_view->priv->tree != NULL);
9998
9999   gtk_tree_view_get_cursor (tree_view, &old_path, NULL);
10000
10001   cursor_tree = tree_view->priv->tree;
10002   cursor_node = cursor_tree->root;
10003
10004   if (count == -1)
10005     {
10006       while (cursor_node && cursor_node->left != cursor_tree->nil)
10007         cursor_node = cursor_node->left;
10008
10009       /* Now go forward to find the first focusable row. */
10010       path = _gtk_tree_view_find_path (tree_view, cursor_tree, cursor_node);
10011       search_first_focusable_path (tree_view, &path,
10012                                    TRUE, &cursor_tree, &cursor_node);
10013     }
10014   else
10015     {
10016       do
10017         {
10018           while (cursor_node && cursor_node->right != cursor_tree->nil)
10019             cursor_node = cursor_node->right;
10020           if (cursor_node->children == NULL)
10021             break;
10022
10023           cursor_tree = cursor_node->children;
10024           cursor_node = cursor_tree->root;
10025         }
10026       while (1);
10027
10028       /* Now go backwards to find last focusable row. */
10029       path = _gtk_tree_view_find_path (tree_view, cursor_tree, cursor_node);
10030       search_first_focusable_path (tree_view, &path,
10031                                    FALSE, &cursor_tree, &cursor_node);
10032     }
10033
10034   if (!path)
10035     goto cleanup;
10036
10037   if (gtk_tree_path_compare (old_path, path))
10038     {
10039       gtk_tree_view_real_set_cursor (tree_view, path, TRUE, TRUE);
10040       gtk_widget_grab_focus (GTK_WIDGET (tree_view));
10041     }
10042   else
10043     {
10044       gtk_widget_error_bell (GTK_WIDGET (tree_view));
10045     }
10046
10047 cleanup:
10048   gtk_tree_path_free (old_path);
10049   gtk_tree_path_free (path);
10050 }
10051
10052 static gboolean
10053 gtk_tree_view_real_select_all (GtkTreeView *tree_view)
10054 {
10055   if (!gtk_widget_has_focus (GTK_WIDGET (tree_view)))
10056     return FALSE;
10057
10058   if (tree_view->priv->selection->type != GTK_SELECTION_MULTIPLE)
10059     return FALSE;
10060
10061   gtk_tree_selection_select_all (tree_view->priv->selection);
10062
10063   return TRUE;
10064 }
10065
10066 static gboolean
10067 gtk_tree_view_real_unselect_all (GtkTreeView *tree_view)
10068 {
10069   if (!gtk_widget_has_focus (GTK_WIDGET (tree_view)))
10070     return FALSE;
10071
10072   if (tree_view->priv->selection->type != GTK_SELECTION_MULTIPLE)
10073     return FALSE;
10074
10075   gtk_tree_selection_unselect_all (tree_view->priv->selection);
10076
10077   return TRUE;
10078 }
10079
10080 static gboolean
10081 gtk_tree_view_real_select_cursor_row (GtkTreeView *tree_view,
10082                                       gboolean     start_editing)
10083 {
10084   GtkRBTree *new_tree = NULL;
10085   GtkRBNode *new_node = NULL;
10086   GtkRBTree *cursor_tree = NULL;
10087   GtkRBNode *cursor_node = NULL;
10088   GtkTreePath *cursor_path = NULL;
10089   GtkTreeSelectMode mode = 0;
10090
10091   if (!gtk_widget_has_focus (GTK_WIDGET (tree_view)))
10092     return FALSE;
10093
10094   if (tree_view->priv->cursor)
10095     cursor_path = gtk_tree_row_reference_get_path (tree_view->priv->cursor);
10096
10097   if (cursor_path == NULL)
10098     return FALSE;
10099
10100   _gtk_tree_view_find_node (tree_view, cursor_path,
10101                             &cursor_tree, &cursor_node);
10102
10103   if (cursor_tree == NULL)
10104     {
10105       gtk_tree_path_free (cursor_path);
10106       return FALSE;
10107     }
10108
10109   if (!tree_view->priv->shift_pressed && start_editing &&
10110       tree_view->priv->focus_column)
10111     {
10112       if (gtk_tree_view_start_editing (tree_view, cursor_path))
10113         {
10114           gtk_tree_path_free (cursor_path);
10115           return TRUE;
10116         }
10117     }
10118
10119   if (tree_view->priv->ctrl_pressed)
10120     mode |= GTK_TREE_SELECT_MODE_TOGGLE;
10121   if (tree_view->priv->shift_pressed)
10122     mode |= GTK_TREE_SELECT_MODE_EXTEND;
10123
10124   _gtk_tree_selection_internal_select_node (tree_view->priv->selection,
10125                                             cursor_node,
10126                                             cursor_tree,
10127                                             cursor_path,
10128                                             mode,
10129                                             FALSE);
10130
10131   /* We bail out if the original (tree, node) don't exist anymore after
10132    * handling the selection-changed callback.  We do return TRUE because
10133    * the key press has been handled at this point.
10134    */
10135   _gtk_tree_view_find_node (tree_view, cursor_path, &new_tree, &new_node);
10136
10137   if (cursor_tree != new_tree || cursor_node != new_node)
10138     return FALSE;
10139
10140   gtk_tree_view_clamp_node_visible (tree_view, cursor_tree, cursor_node);
10141
10142   gtk_widget_grab_focus (GTK_WIDGET (tree_view));
10143   _gtk_tree_view_queue_draw_node (tree_view, cursor_tree, cursor_node, NULL);
10144
10145   if (!tree_view->priv->shift_pressed)
10146     gtk_tree_view_row_activated (tree_view, cursor_path,
10147                                  tree_view->priv->focus_column);
10148
10149   gtk_tree_path_free (cursor_path);
10150
10151   return TRUE;
10152 }
10153
10154 static gboolean
10155 gtk_tree_view_real_toggle_cursor_row (GtkTreeView *tree_view)
10156 {
10157   GtkRBTree *new_tree = NULL;
10158   GtkRBNode *new_node = NULL;
10159   GtkRBTree *cursor_tree = NULL;
10160   GtkRBNode *cursor_node = NULL;
10161   GtkTreePath *cursor_path = NULL;
10162
10163   if (!gtk_widget_has_focus (GTK_WIDGET (tree_view)))
10164     return FALSE;
10165
10166   cursor_path = NULL;
10167   if (tree_view->priv->cursor)
10168     cursor_path = gtk_tree_row_reference_get_path (tree_view->priv->cursor);
10169
10170   if (cursor_path == NULL)
10171     return FALSE;
10172
10173   _gtk_tree_view_find_node (tree_view, cursor_path,
10174                             &cursor_tree, &cursor_node);
10175   if (cursor_tree == NULL)
10176     {
10177       gtk_tree_path_free (cursor_path);
10178       return FALSE;
10179     }
10180
10181   _gtk_tree_selection_internal_select_node (tree_view->priv->selection,
10182                                             cursor_node,
10183                                             cursor_tree,
10184                                             cursor_path,
10185                                             GTK_TREE_SELECT_MODE_TOGGLE,
10186                                             FALSE);
10187
10188   /* We bail out if the original (tree, node) don't exist anymore after
10189    * handling the selection-changed callback.  We do return TRUE because
10190    * the key press has been handled at this point.
10191    */
10192   _gtk_tree_view_find_node (tree_view, cursor_path, &new_tree, &new_node);
10193
10194   if (cursor_tree != new_tree || cursor_node != new_node)
10195     return FALSE;
10196
10197   gtk_tree_view_clamp_node_visible (tree_view, cursor_tree, cursor_node);
10198
10199   gtk_widget_grab_focus (GTK_WIDGET (tree_view));
10200   gtk_tree_view_queue_draw_path (tree_view, cursor_path, NULL);
10201   gtk_tree_path_free (cursor_path);
10202
10203   return TRUE;
10204 }
10205
10206 static gboolean
10207 gtk_tree_view_real_expand_collapse_cursor_row (GtkTreeView *tree_view,
10208                                                gboolean     logical,
10209                                                gboolean     expand,
10210                                                gboolean     open_all)
10211 {
10212   GtkTreePath *cursor_path = NULL;
10213   GtkRBTree *tree;
10214   GtkRBNode *node;
10215
10216   if (!gtk_widget_has_focus (GTK_WIDGET (tree_view)))
10217     return FALSE;
10218
10219   cursor_path = NULL;
10220   if (tree_view->priv->cursor)
10221     cursor_path = gtk_tree_row_reference_get_path (tree_view->priv->cursor);
10222
10223   if (cursor_path == NULL)
10224     return FALSE;
10225
10226   if (_gtk_tree_view_find_node (tree_view, cursor_path, &tree, &node))
10227     return FALSE;
10228
10229   /* Don't handle the event if we aren't an expander */
10230   if (!((node->flags & GTK_RBNODE_IS_PARENT) == GTK_RBNODE_IS_PARENT))
10231     return FALSE;
10232
10233   if (!logical
10234       && gtk_widget_get_direction (GTK_WIDGET (tree_view)) == GTK_TEXT_DIR_RTL)
10235     expand = !expand;
10236
10237   if (expand)
10238     gtk_tree_view_real_expand_row (tree_view, cursor_path, tree, node, open_all, TRUE);
10239   else
10240     gtk_tree_view_real_collapse_row (tree_view, cursor_path, tree, node, TRUE);
10241
10242   gtk_tree_path_free (cursor_path);
10243
10244   return TRUE;
10245 }
10246
10247 static gboolean
10248 gtk_tree_view_real_select_cursor_parent (GtkTreeView *tree_view)
10249 {
10250   GtkRBTree *cursor_tree = NULL;
10251   GtkRBNode *cursor_node = NULL;
10252   GtkTreePath *cursor_path = NULL;
10253   GdkModifierType state;
10254
10255   if (!gtk_widget_has_focus (GTK_WIDGET (tree_view)))
10256     goto out;
10257
10258   cursor_path = NULL;
10259   if (tree_view->priv->cursor)
10260     cursor_path = gtk_tree_row_reference_get_path (tree_view->priv->cursor);
10261
10262   if (cursor_path == NULL)
10263     goto out;
10264
10265   _gtk_tree_view_find_node (tree_view, cursor_path,
10266                             &cursor_tree, &cursor_node);
10267   if (cursor_tree == NULL)
10268     {
10269       gtk_tree_path_free (cursor_path);
10270       goto out;
10271     }
10272
10273   if (cursor_tree->parent_node)
10274     {
10275       gtk_tree_view_queue_draw_path (tree_view, cursor_path, NULL);
10276       cursor_node = cursor_tree->parent_node;
10277       cursor_tree = cursor_tree->parent_tree;
10278
10279       gtk_tree_path_up (cursor_path);
10280
10281       if (gtk_get_current_event_state (&state))
10282         {
10283           if ((state & GDK_CONTROL_MASK) == GDK_CONTROL_MASK)
10284             tree_view->priv->ctrl_pressed = TRUE;
10285         }
10286
10287       gtk_tree_view_real_set_cursor (tree_view, cursor_path, TRUE, FALSE);
10288       gtk_tree_view_clamp_node_visible (tree_view, cursor_tree, cursor_node);
10289
10290       gtk_widget_grab_focus (GTK_WIDGET (tree_view));
10291       gtk_tree_view_queue_draw_path (tree_view, cursor_path, NULL);
10292       gtk_tree_path_free (cursor_path);
10293
10294       tree_view->priv->ctrl_pressed = FALSE;
10295
10296       return TRUE;
10297     }
10298
10299  out:
10300
10301   tree_view->priv->search_entry_avoid_unhandled_binding = TRUE;
10302   return FALSE;
10303 }
10304
10305 static gboolean
10306 gtk_tree_view_search_entry_flush_timeout (GtkTreeView *tree_view)
10307 {
10308   gtk_tree_view_search_dialog_hide (tree_view->priv->search_window, tree_view, NULL);
10309   tree_view->priv->typeselect_flush_timeout = 0;
10310
10311   return FALSE;
10312 }
10313
10314 /* Cut and paste from gtkwindow.c */
10315 static void
10316 send_focus_change (GtkWidget *widget,
10317                    GdkDevice *device,
10318                    gboolean   in)
10319 {
10320   GdkDeviceManager *device_manager;
10321   GList *devices, *d;
10322
10323   device_manager = gdk_display_get_device_manager (gtk_widget_get_display (widget));
10324   devices = gdk_device_manager_list_devices (device_manager, GDK_DEVICE_TYPE_MASTER);
10325   devices = g_list_concat (devices, gdk_device_manager_list_devices (device_manager, GDK_DEVICE_TYPE_SLAVE));
10326   devices = g_list_concat (devices, gdk_device_manager_list_devices (device_manager, GDK_DEVICE_TYPE_FLOATING));
10327
10328   for (d = devices; d; d = d->next)
10329     {
10330       GdkDevice *dev = d->data;
10331       GdkEvent *fevent;
10332
10333       if (dev->source != GDK_SOURCE_KEYBOARD)
10334         continue;
10335
10336       /* Skip non-master keyboards that haven't
10337        * selected for events from this window
10338        */
10339       if (gdk_device_get_device_type (dev) != GDK_DEVICE_TYPE_MASTER &&
10340           !gdk_window_get_device_events (widget->window, dev))
10341         continue;
10342
10343       fevent = gdk_event_new (GDK_FOCUS_CHANGE);
10344
10345       fevent->focus_change.type = GDK_FOCUS_CHANGE;
10346       fevent->focus_change.window = g_object_ref (widget->window);
10347       fevent->focus_change.in = in;
10348       gdk_event_set_device (fevent, device);
10349
10350       gtk_widget_send_focus_change (widget, fevent);
10351
10352       gdk_event_free (fevent);
10353     }
10354 }
10355
10356 static void
10357 gtk_tree_view_ensure_interactive_directory (GtkTreeView *tree_view)
10358 {
10359   GtkWidget *frame, *vbox, *toplevel;
10360   GtkWindowGroup *group;
10361   GdkScreen *screen;
10362
10363   if (tree_view->priv->search_custom_entry_set)
10364     return;
10365
10366   toplevel = gtk_widget_get_toplevel (GTK_WIDGET (tree_view));
10367   group = gtk_window_get_group (GTK_WINDOW (toplevel));
10368   screen = gtk_widget_get_screen (GTK_WIDGET (tree_view));
10369
10370    if (tree_view->priv->search_window != NULL)
10371      {
10372        GtkWindowGroup *search_group;
10373
10374        search_group = gtk_window_get_group (GTK_WINDOW (tree_view->priv->search_window));
10375        if (group)
10376          gtk_window_group_add_window (group,
10377                                       GTK_WINDOW (tree_view->priv->search_window));
10378        else if (search_group)
10379          gtk_window_group_remove_window (search_group,
10380                                          GTK_WINDOW (tree_view->priv->search_window));
10381        gtk_window_set_screen (GTK_WINDOW (tree_view->priv->search_window), screen);
10382        return;
10383      }
10384
10385   tree_view->priv->search_window = gtk_window_new (GTK_WINDOW_POPUP);
10386   gtk_window_set_screen (GTK_WINDOW (tree_view->priv->search_window), screen);
10387
10388   if (group)
10389     gtk_window_group_add_window (group,
10390                                  GTK_WINDOW (tree_view->priv->search_window));
10391
10392   gtk_window_set_type_hint (GTK_WINDOW (tree_view->priv->search_window),
10393                             GDK_WINDOW_TYPE_HINT_UTILITY);
10394   gtk_window_set_modal (GTK_WINDOW (tree_view->priv->search_window), TRUE);
10395   g_signal_connect (tree_view->priv->search_window, "delete-event",
10396                     G_CALLBACK (gtk_tree_view_search_delete_event),
10397                     tree_view);
10398   g_signal_connect (tree_view->priv->search_window, "key-press-event",
10399                     G_CALLBACK (gtk_tree_view_search_key_press_event),
10400                     tree_view);
10401   g_signal_connect (tree_view->priv->search_window, "button-press-event",
10402                     G_CALLBACK (gtk_tree_view_search_button_press_event),
10403                     tree_view);
10404   g_signal_connect (tree_view->priv->search_window, "scroll-event",
10405                     G_CALLBACK (gtk_tree_view_search_scroll_event),
10406                     tree_view);
10407
10408   frame = gtk_frame_new (NULL);
10409   gtk_frame_set_shadow_type (GTK_FRAME (frame), GTK_SHADOW_ETCHED_IN);
10410   gtk_widget_show (frame);
10411   gtk_container_add (GTK_CONTAINER (tree_view->priv->search_window), frame);
10412
10413   vbox = gtk_vbox_new (FALSE, 0);
10414   gtk_widget_show (vbox);
10415   gtk_container_add (GTK_CONTAINER (frame), vbox);
10416   gtk_container_set_border_width (GTK_CONTAINER (vbox), 3);
10417
10418   /* add entry */
10419   tree_view->priv->search_entry = gtk_entry_new ();
10420   gtk_widget_show (tree_view->priv->search_entry);
10421   g_signal_connect (tree_view->priv->search_entry, "populate-popup",
10422                     G_CALLBACK (gtk_tree_view_search_disable_popdown),
10423                     tree_view);
10424   g_signal_connect (tree_view->priv->search_entry,
10425                     "activate", G_CALLBACK (gtk_tree_view_search_activate),
10426                     tree_view);
10427   g_signal_connect (GTK_ENTRY (tree_view->priv->search_entry)->im_context,
10428                     "preedit-changed",
10429                     G_CALLBACK (gtk_tree_view_search_preedit_changed),
10430                     tree_view);
10431   gtk_container_add (GTK_CONTAINER (vbox),
10432                      tree_view->priv->search_entry);
10433
10434   gtk_widget_realize (tree_view->priv->search_entry);
10435 }
10436
10437 /* Pops up the interactive search entry.  If keybinding is TRUE then the user
10438  * started this by typing the start_interactive_search keybinding.  Otherwise, it came from
10439  */
10440 static gboolean
10441 gtk_tree_view_real_start_interactive_search (GtkTreeView *tree_view,
10442                                              GdkDevice   *device,
10443                                              gboolean     keybinding)
10444 {
10445   /* We only start interactive search if we have focus or the columns
10446    * have focus.  If one of our children have focus, we don't want to
10447    * start the search.
10448    */
10449   GList *list;
10450   gboolean found_focus = FALSE;
10451   GtkWidgetClass *entry_parent_class;
10452
10453   if (!tree_view->priv->enable_search && !keybinding)
10454     return FALSE;
10455
10456   if (tree_view->priv->search_custom_entry_set)
10457     return FALSE;
10458
10459   if (tree_view->priv->search_window != NULL &&
10460       gtk_widget_get_visible (tree_view->priv->search_window))
10461     return TRUE;
10462
10463   for (list = tree_view->priv->columns; list; list = list->next)
10464     {
10465       GtkTreeViewColumn *column;
10466
10467       column = list->data;
10468       if (! column->visible)
10469         continue;
10470
10471       if (gtk_widget_has_focus (column->button))
10472         {
10473           found_focus = TRUE;
10474           break;
10475         }
10476     }
10477
10478   if (gtk_widget_has_focus (GTK_WIDGET (tree_view)))
10479     found_focus = TRUE;
10480
10481   if (!found_focus)
10482     return FALSE;
10483
10484   if (tree_view->priv->search_column < 0)
10485     return FALSE;
10486
10487   gtk_tree_view_ensure_interactive_directory (tree_view);
10488
10489   if (keybinding)
10490     gtk_entry_set_text (GTK_ENTRY (tree_view->priv->search_entry), "");
10491
10492   /* done, show it */
10493   tree_view->priv->search_position_func (tree_view, tree_view->priv->search_window, tree_view->priv->search_position_user_data);
10494   gtk_widget_show (tree_view->priv->search_window);
10495   if (tree_view->priv->search_entry_changed_id == 0)
10496     {
10497       tree_view->priv->search_entry_changed_id =
10498         g_signal_connect (tree_view->priv->search_entry, "changed",
10499                           G_CALLBACK (gtk_tree_view_search_init),
10500                           tree_view);
10501     }
10502
10503   tree_view->priv->typeselect_flush_timeout =
10504     gdk_threads_add_timeout (GTK_TREE_VIEW_SEARCH_DIALOG_TIMEOUT,
10505                    (GSourceFunc) gtk_tree_view_search_entry_flush_timeout,
10506                    tree_view);
10507
10508   /* Grab focus will select all the text.  We don't want that to happen, so we
10509    * call the parent instance and bypass the selection change.  This is probably
10510    * really non-kosher. */
10511   entry_parent_class = g_type_class_peek_parent (GTK_ENTRY_GET_CLASS (tree_view->priv->search_entry));
10512   (entry_parent_class->grab_focus) (tree_view->priv->search_entry);
10513
10514   /* send focus-in event */
10515   send_focus_change (tree_view->priv->search_entry, device, TRUE);
10516
10517   /* search first matching iter */
10518   gtk_tree_view_search_init (tree_view->priv->search_entry, tree_view);
10519
10520   return TRUE;
10521 }
10522
10523 static gboolean
10524 gtk_tree_view_start_interactive_search (GtkTreeView *tree_view)
10525 {
10526   return gtk_tree_view_real_start_interactive_search (tree_view,
10527                                                       gtk_get_current_event_device (),
10528                                                       TRUE);
10529 }
10530
10531 /* this function returns the new width of the column being resized given
10532  * the column and x position of the cursor; the x cursor position is passed
10533  * in as a pointer and automagicly corrected if it's beyond min/max limits
10534  */
10535 static gint
10536 gtk_tree_view_new_column_width (GtkTreeView *tree_view,
10537                                 gint       i,
10538                                 gint      *x)
10539 {
10540   GtkTreeViewColumn *column;
10541   gint width;
10542   gboolean rtl;
10543
10544   /* first translate the x position from widget->window
10545    * to clist->clist_window
10546    */
10547   rtl = (gtk_widget_get_direction (GTK_WIDGET (tree_view)) == GTK_TEXT_DIR_RTL);
10548   column = g_list_nth (tree_view->priv->columns, i)->data;
10549   width = rtl ? (column->button->allocation.x + column->button->allocation.width - *x) : (*x - column->button->allocation.x);
10550
10551   /* Clamp down the value */
10552   if (column->min_width == -1)
10553     width = MAX (column->button->requisition.width,
10554                  width);
10555   else
10556     width = MAX (column->min_width,
10557                  width);
10558   if (column->max_width != -1)
10559     width = MIN (width, column->max_width);
10560
10561   *x = rtl ? (column->button->allocation.x + column->button->allocation.width - width) : (column->button->allocation.x + width);
10562
10563   return width;
10564 }
10565
10566
10567 /* FIXME this adjust_allocation is a big cut-and-paste from
10568  * GtkCList, needs to be some "official" way to do this
10569  * factored out.
10570  */
10571 typedef struct
10572 {
10573   GdkWindow *window;
10574   int dx;
10575   int dy;
10576 } ScrollData;
10577
10578 /* The window to which widget->window is relative */
10579 #define ALLOCATION_WINDOW(widget)               \
10580    (!gtk_widget_get_has_window (widget) ?               \
10581     (widget)->window :                          \
10582      gdk_window_get_parent ((widget)->window))
10583
10584 static void
10585 adjust_allocation_recurse (GtkWidget *widget,
10586                            gpointer   data)
10587 {
10588   ScrollData *scroll_data = data;
10589
10590   /* Need to really size allocate instead of just poking
10591    * into widget->allocation if the widget is not realized.
10592    * FIXME someone figure out why this was.
10593    */
10594   if (!gtk_widget_get_realized (widget))
10595     {
10596       if (gtk_widget_get_visible (widget))
10597         {
10598           GdkRectangle tmp_rectangle = widget->allocation;
10599           tmp_rectangle.x += scroll_data->dx;
10600           tmp_rectangle.y += scroll_data->dy;
10601
10602           gtk_widget_size_allocate (widget, &tmp_rectangle);
10603         }
10604     }
10605   else
10606     {
10607       if (ALLOCATION_WINDOW (widget) == scroll_data->window)
10608         {
10609           widget->allocation.x += scroll_data->dx;
10610           widget->allocation.y += scroll_data->dy;
10611
10612           if (GTK_IS_CONTAINER (widget))
10613             gtk_container_forall (GTK_CONTAINER (widget),
10614                                   adjust_allocation_recurse,
10615                                   data);
10616         }
10617     }
10618 }
10619
10620 static void
10621 adjust_allocation (GtkWidget *widget,
10622                    int        dx,
10623                    int        dy)
10624 {
10625   ScrollData scroll_data;
10626
10627   if (gtk_widget_get_realized (widget))
10628     scroll_data.window = ALLOCATION_WINDOW (widget);
10629   else
10630     scroll_data.window = NULL;
10631
10632   scroll_data.dx = dx;
10633   scroll_data.dy = dy;
10634
10635   adjust_allocation_recurse (widget, &scroll_data);
10636 }
10637
10638 /* Callbacks */
10639 static void
10640 gtk_tree_view_adjustment_changed (GtkAdjustment *adjustment,
10641                                   GtkTreeView   *tree_view)
10642 {
10643   if (gtk_widget_get_realized (GTK_WIDGET (tree_view)))
10644     {
10645       gint dy;
10646
10647       gdk_window_move (tree_view->priv->bin_window,
10648                        - tree_view->priv->hadjustment->value,
10649                        TREE_VIEW_HEADER_HEIGHT (tree_view));
10650       gdk_window_move (tree_view->priv->header_window,
10651                        - tree_view->priv->hadjustment->value,
10652                        0);
10653       dy = tree_view->priv->dy - (int) tree_view->priv->vadjustment->value;
10654       if (dy)
10655         {
10656           update_prelight (tree_view,
10657                            tree_view->priv->event_last_x,
10658                            tree_view->priv->event_last_y - dy);
10659
10660           if (tree_view->priv->edited_column &&
10661               GTK_IS_WIDGET (tree_view->priv->edited_column->editable_widget))
10662             {
10663               GList *list;
10664               GtkWidget *widget;
10665               GtkTreeViewChild *child = NULL;
10666
10667               widget = GTK_WIDGET (tree_view->priv->edited_column->editable_widget);
10668               adjust_allocation (widget, 0, dy);
10669
10670               for (list = tree_view->priv->children; list; list = list->next)
10671                 {
10672                   child = (GtkTreeViewChild *)list->data;
10673                   if (child->widget == widget)
10674                     {
10675                       child->y += dy;
10676                       break;
10677                     }
10678                 }
10679             }
10680         }
10681       gdk_window_scroll (tree_view->priv->bin_window, 0, dy);
10682
10683       if (tree_view->priv->dy != (int) tree_view->priv->vadjustment->value)
10684         {
10685           /* update our dy and top_row */
10686           tree_view->priv->dy = (int) tree_view->priv->vadjustment->value;
10687
10688           if (!tree_view->priv->in_top_row_to_dy)
10689             gtk_tree_view_dy_to_top_row (tree_view);
10690         }
10691
10692       gdk_window_process_updates (tree_view->priv->header_window, TRUE);
10693       gdk_window_process_updates (tree_view->priv->bin_window, TRUE);
10694     }
10695 }
10696
10697 \f
10698
10699 /* Public methods
10700  */
10701
10702 /**
10703  * gtk_tree_view_new:
10704  *
10705  * Creates a new #GtkTreeView widget.
10706  *
10707  * Return value: A newly created #GtkTreeView widget.
10708  **/
10709 GtkWidget *
10710 gtk_tree_view_new (void)
10711 {
10712   return g_object_new (GTK_TYPE_TREE_VIEW, NULL);
10713 }
10714
10715 /**
10716  * gtk_tree_view_new_with_model:
10717  * @model: the model.
10718  *
10719  * Creates a new #GtkTreeView widget with the model initialized to @model.
10720  *
10721  * Return value: A newly created #GtkTreeView widget.
10722  **/
10723 GtkWidget *
10724 gtk_tree_view_new_with_model (GtkTreeModel *model)
10725 {
10726   return g_object_new (GTK_TYPE_TREE_VIEW, "model", model, NULL);
10727 }
10728
10729 /* Public Accessors
10730  */
10731
10732 /**
10733  * gtk_tree_view_get_model:
10734  * @tree_view: a #GtkTreeView
10735  *
10736  * Returns the model the #GtkTreeView is based on.  Returns %NULL if the
10737  * model is unset.
10738  *
10739  * Return value: (transfer none): A #GtkTreeModel, or %NULL if none is currently being used.
10740  **/
10741 GtkTreeModel *
10742 gtk_tree_view_get_model (GtkTreeView *tree_view)
10743 {
10744   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), NULL);
10745
10746   return tree_view->priv->model;
10747 }
10748
10749 /**
10750  * gtk_tree_view_set_model:
10751  * @tree_view: A #GtkTreeNode.
10752  * @model: (allow-none): The model.
10753  *
10754  * Sets the model for a #GtkTreeView.  If the @tree_view already has a model
10755  * set, it will remove it before setting the new model.  If @model is %NULL,
10756  * then it will unset the old model.
10757  **/
10758 void
10759 gtk_tree_view_set_model (GtkTreeView  *tree_view,
10760                          GtkTreeModel *model)
10761 {
10762   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
10763   g_return_if_fail (model == NULL || GTK_IS_TREE_MODEL (model));
10764
10765   if (model == tree_view->priv->model)
10766     return;
10767
10768   if (tree_view->priv->scroll_to_path)
10769     {
10770       gtk_tree_row_reference_free (tree_view->priv->scroll_to_path);
10771       tree_view->priv->scroll_to_path = NULL;
10772     }
10773
10774   if (tree_view->priv->model)
10775     {
10776       GList *tmplist = tree_view->priv->columns;
10777
10778       gtk_tree_view_unref_and_check_selection_tree (tree_view, tree_view->priv->tree);
10779       gtk_tree_view_stop_editing (tree_view, TRUE);
10780
10781       remove_expand_collapse_timeout (tree_view);
10782
10783       g_signal_handlers_disconnect_by_func (tree_view->priv->model,
10784                                             gtk_tree_view_row_changed,
10785                                             tree_view);
10786       g_signal_handlers_disconnect_by_func (tree_view->priv->model,
10787                                             gtk_tree_view_row_inserted,
10788                                             tree_view);
10789       g_signal_handlers_disconnect_by_func (tree_view->priv->model,
10790                                             gtk_tree_view_row_has_child_toggled,
10791                                             tree_view);
10792       g_signal_handlers_disconnect_by_func (tree_view->priv->model,
10793                                             gtk_tree_view_row_deleted,
10794                                             tree_view);
10795       g_signal_handlers_disconnect_by_func (tree_view->priv->model,
10796                                             gtk_tree_view_rows_reordered,
10797                                             tree_view);
10798
10799       for (; tmplist; tmplist = tmplist->next)
10800         _gtk_tree_view_column_unset_model (tmplist->data,
10801                                            tree_view->priv->model);
10802
10803       if (tree_view->priv->tree)
10804         gtk_tree_view_free_rbtree (tree_view);
10805
10806       gtk_tree_row_reference_free (tree_view->priv->drag_dest_row);
10807       tree_view->priv->drag_dest_row = NULL;
10808       gtk_tree_row_reference_free (tree_view->priv->cursor);
10809       tree_view->priv->cursor = NULL;
10810       gtk_tree_row_reference_free (tree_view->priv->anchor);
10811       tree_view->priv->anchor = NULL;
10812       gtk_tree_row_reference_free (tree_view->priv->top_row);
10813       tree_view->priv->top_row = NULL;
10814       gtk_tree_row_reference_free (tree_view->priv->scroll_to_path);
10815       tree_view->priv->scroll_to_path = NULL;
10816
10817       tree_view->priv->scroll_to_column = NULL;
10818
10819       g_object_unref (tree_view->priv->model);
10820
10821       tree_view->priv->search_column = -1;
10822       tree_view->priv->fixed_height_check = 0;
10823       tree_view->priv->fixed_height = -1;
10824       tree_view->priv->dy = tree_view->priv->top_row_dy = 0;
10825       tree_view->priv->last_button_x = -1;
10826       tree_view->priv->last_button_y = -1;
10827     }
10828
10829   tree_view->priv->model = model;
10830
10831   if (tree_view->priv->model)
10832     {
10833       gint i;
10834       GtkTreePath *path;
10835       GtkTreeIter iter;
10836       GtkTreeModelFlags flags;
10837
10838       if (tree_view->priv->search_column == -1)
10839         {
10840           for (i = 0; i < gtk_tree_model_get_n_columns (model); i++)
10841             {
10842               GType type = gtk_tree_model_get_column_type (model, i);
10843
10844               if (g_value_type_transformable (type, G_TYPE_STRING))
10845                 {
10846                   tree_view->priv->search_column = i;
10847                   break;
10848                 }
10849             }
10850         }
10851
10852       g_object_ref (tree_view->priv->model);
10853       g_signal_connect (tree_view->priv->model,
10854                         "row-changed",
10855                         G_CALLBACK (gtk_tree_view_row_changed),
10856                         tree_view);
10857       g_signal_connect (tree_view->priv->model,
10858                         "row-inserted",
10859                         G_CALLBACK (gtk_tree_view_row_inserted),
10860                         tree_view);
10861       g_signal_connect (tree_view->priv->model,
10862                         "row-has-child-toggled",
10863                         G_CALLBACK (gtk_tree_view_row_has_child_toggled),
10864                         tree_view);
10865       g_signal_connect (tree_view->priv->model,
10866                         "row-deleted",
10867                         G_CALLBACK (gtk_tree_view_row_deleted),
10868                         tree_view);
10869       g_signal_connect (tree_view->priv->model,
10870                         "rows-reordered",
10871                         G_CALLBACK (gtk_tree_view_rows_reordered),
10872                         tree_view);
10873
10874       flags = gtk_tree_model_get_flags (tree_view->priv->model);
10875       if ((flags & GTK_TREE_MODEL_LIST_ONLY) == GTK_TREE_MODEL_LIST_ONLY)
10876         GTK_TREE_VIEW_SET_FLAG (tree_view, GTK_TREE_VIEW_IS_LIST);
10877       else
10878         GTK_TREE_VIEW_UNSET_FLAG (tree_view, GTK_TREE_VIEW_IS_LIST);
10879
10880       path = gtk_tree_path_new_first ();
10881       if (gtk_tree_model_get_iter (tree_view->priv->model, &iter, path))
10882         {
10883           tree_view->priv->tree = _gtk_rbtree_new ();
10884           gtk_tree_view_build_tree (tree_view, tree_view->priv->tree, &iter, 1, FALSE);
10885         }
10886       gtk_tree_path_free (path);
10887
10888       /*  FIXME: do I need to do this? gtk_tree_view_create_buttons (tree_view); */
10889       install_presize_handler (tree_view);
10890     }
10891
10892   g_object_notify (G_OBJECT (tree_view), "model");
10893
10894   if (tree_view->priv->selection)
10895   _gtk_tree_selection_emit_changed (tree_view->priv->selection);
10896
10897   if (gtk_widget_get_realized (GTK_WIDGET (tree_view)))
10898     gtk_widget_queue_resize (GTK_WIDGET (tree_view));
10899 }
10900
10901 /**
10902  * gtk_tree_view_get_selection:
10903  * @tree_view: A #GtkTreeView.
10904  *
10905  * Gets the #GtkTreeSelection associated with @tree_view.
10906  *
10907  * Return value: (transfer none): A #GtkTreeSelection object.
10908  **/
10909 GtkTreeSelection *
10910 gtk_tree_view_get_selection (GtkTreeView *tree_view)
10911 {
10912   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), NULL);
10913
10914   return tree_view->priv->selection;
10915 }
10916
10917 /**
10918  * gtk_tree_view_get_hadjustment:
10919  * @tree_view: A #GtkTreeView
10920  *
10921  * Gets the #GtkAdjustment currently being used for the horizontal aspect.
10922  *
10923  * Return value: A #GtkAdjustment object, or %NULL if none is currently being
10924  * used.
10925  **/
10926 GtkAdjustment *
10927 gtk_tree_view_get_hadjustment (GtkTreeView *tree_view)
10928 {
10929   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), NULL);
10930
10931   if (tree_view->priv->hadjustment == NULL)
10932     gtk_tree_view_set_hadjustment (tree_view, NULL);
10933
10934   return tree_view->priv->hadjustment;
10935 }
10936
10937 /**
10938  * gtk_tree_view_set_hadjustment:
10939  * @tree_view: A #GtkTreeView
10940  * @adjustment: (allow-none): The #GtkAdjustment to set, or %NULL
10941  *
10942  * Sets the #GtkAdjustment for the current horizontal aspect.
10943  **/
10944 void
10945 gtk_tree_view_set_hadjustment (GtkTreeView   *tree_view,
10946                                GtkAdjustment *adjustment)
10947 {
10948   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
10949
10950   gtk_tree_view_set_adjustments (tree_view,
10951                                  adjustment,
10952                                  tree_view->priv->vadjustment);
10953
10954   g_object_notify (G_OBJECT (tree_view), "hadjustment");
10955 }
10956
10957 /**
10958  * gtk_tree_view_get_vadjustment:
10959  * @tree_view: A #GtkTreeView
10960  *
10961  * Gets the #GtkAdjustment currently being used for the vertical aspect.
10962  *
10963  * Return value: A #GtkAdjustment object, or %NULL if none is currently being
10964  * used.
10965  **/
10966 GtkAdjustment *
10967 gtk_tree_view_get_vadjustment (GtkTreeView *tree_view)
10968 {
10969   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), NULL);
10970
10971   if (tree_view->priv->vadjustment == NULL)
10972     gtk_tree_view_set_vadjustment (tree_view, NULL);
10973
10974   return tree_view->priv->vadjustment;
10975 }
10976
10977 /**
10978  * gtk_tree_view_set_vadjustment:
10979  * @tree_view: A #GtkTreeView
10980  * @adjustment: (allow-none): The #GtkAdjustment to set, or %NULL
10981  *
10982  * Sets the #GtkAdjustment for the current vertical aspect.
10983  **/
10984 void
10985 gtk_tree_view_set_vadjustment (GtkTreeView   *tree_view,
10986                                GtkAdjustment *adjustment)
10987 {
10988   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
10989
10990   gtk_tree_view_set_adjustments (tree_view,
10991                                  tree_view->priv->hadjustment,
10992                                  adjustment);
10993
10994   g_object_notify (G_OBJECT (tree_view), "vadjustment");
10995 }
10996
10997 /* Column and header operations */
10998
10999 /**
11000  * gtk_tree_view_get_headers_visible:
11001  * @tree_view: A #GtkTreeView.
11002  *
11003  * Returns %TRUE if the headers on the @tree_view are visible.
11004  *
11005  * Return value: Whether the headers are visible or not.
11006  **/
11007 gboolean
11008 gtk_tree_view_get_headers_visible (GtkTreeView *tree_view)
11009 {
11010   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), FALSE);
11011
11012   return GTK_TREE_VIEW_FLAG_SET (tree_view, GTK_TREE_VIEW_HEADERS_VISIBLE);
11013 }
11014
11015 /**
11016  * gtk_tree_view_set_headers_visible:
11017  * @tree_view: A #GtkTreeView.
11018  * @headers_visible: %TRUE if the headers are visible
11019  *
11020  * Sets the visibility state of the headers.
11021  **/
11022 void
11023 gtk_tree_view_set_headers_visible (GtkTreeView *tree_view,
11024                                    gboolean     headers_visible)
11025 {
11026   gint x, y;
11027   GList *list;
11028   GtkTreeViewColumn *column;
11029
11030   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
11031
11032   headers_visible = !! headers_visible;
11033
11034   if (GTK_TREE_VIEW_FLAG_SET (tree_view, GTK_TREE_VIEW_HEADERS_VISIBLE) == headers_visible)
11035     return;
11036
11037   if (headers_visible)
11038     GTK_TREE_VIEW_SET_FLAG (tree_view, GTK_TREE_VIEW_HEADERS_VISIBLE);
11039   else
11040     GTK_TREE_VIEW_UNSET_FLAG (tree_view, GTK_TREE_VIEW_HEADERS_VISIBLE);
11041
11042   if (gtk_widget_get_realized (GTK_WIDGET (tree_view)))
11043     {
11044       gdk_window_get_position (tree_view->priv->bin_window, &x, &y);
11045       if (headers_visible)
11046         {
11047           gdk_window_move_resize (tree_view->priv->bin_window, x, y  + TREE_VIEW_HEADER_HEIGHT (tree_view), tree_view->priv->width, GTK_WIDGET (tree_view)->allocation.height -  + TREE_VIEW_HEADER_HEIGHT (tree_view));
11048
11049           if (gtk_widget_get_mapped (GTK_WIDGET (tree_view)))
11050             gtk_tree_view_map_buttons (tree_view);
11051         }
11052       else
11053         {
11054           gdk_window_move_resize (tree_view->priv->bin_window, x, y, tree_view->priv->width, tree_view->priv->height);
11055
11056           for (list = tree_view->priv->columns; list; list = list->next)
11057             {
11058               column = list->data;
11059               gtk_widget_unmap (column->button);
11060             }
11061           gdk_window_hide (tree_view->priv->header_window);
11062         }
11063     }
11064
11065   tree_view->priv->vadjustment->page_size = GTK_WIDGET (tree_view)->allocation.height - TREE_VIEW_HEADER_HEIGHT (tree_view);
11066   tree_view->priv->vadjustment->page_increment = (GTK_WIDGET (tree_view)->allocation.height - TREE_VIEW_HEADER_HEIGHT (tree_view)) / 2;
11067   tree_view->priv->vadjustment->lower = 0;
11068   tree_view->priv->vadjustment->upper = tree_view->priv->height;
11069   gtk_adjustment_changed (tree_view->priv->vadjustment);
11070
11071   gtk_widget_queue_resize (GTK_WIDGET (tree_view));
11072
11073   g_object_notify (G_OBJECT (tree_view), "headers-visible");
11074 }
11075
11076 /**
11077  * gtk_tree_view_columns_autosize:
11078  * @tree_view: A #GtkTreeView.
11079  *
11080  * Resizes all columns to their optimal width. Only works after the
11081  * treeview has been realized.
11082  **/
11083 void
11084 gtk_tree_view_columns_autosize (GtkTreeView *tree_view)
11085 {
11086   gboolean dirty = FALSE;
11087   GList *list;
11088   GtkTreeViewColumn *column;
11089
11090   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
11091
11092   for (list = tree_view->priv->columns; list; list = list->next)
11093     {
11094       column = list->data;
11095       if (column->column_type == GTK_TREE_VIEW_COLUMN_AUTOSIZE)
11096         continue;
11097       _gtk_tree_view_column_cell_set_dirty (column, TRUE);
11098       dirty = TRUE;
11099     }
11100
11101   if (dirty)
11102     gtk_widget_queue_resize (GTK_WIDGET (tree_view));
11103 }
11104
11105 /**
11106  * gtk_tree_view_set_headers_clickable:
11107  * @tree_view: A #GtkTreeView.
11108  * @setting: %TRUE if the columns are clickable.
11109  *
11110  * Allow the column title buttons to be clicked.
11111  **/
11112 void
11113 gtk_tree_view_set_headers_clickable (GtkTreeView *tree_view,
11114                                      gboolean   setting)
11115 {
11116   GList *list;
11117
11118   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
11119
11120   for (list = tree_view->priv->columns; list; list = list->next)
11121     gtk_tree_view_column_set_clickable (GTK_TREE_VIEW_COLUMN (list->data), setting);
11122
11123   g_object_notify (G_OBJECT (tree_view), "headers-clickable");
11124 }
11125
11126
11127 /**
11128  * gtk_tree_view_get_headers_clickable:
11129  * @tree_view: A #GtkTreeView.
11130  *
11131  * Returns whether all header columns are clickable.
11132  *
11133  * Return value: %TRUE if all header columns are clickable, otherwise %FALSE
11134  *
11135  * Since: 2.10
11136  **/
11137 gboolean
11138 gtk_tree_view_get_headers_clickable (GtkTreeView *tree_view)
11139 {
11140   GList *list;
11141
11142   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), FALSE);
11143
11144   for (list = tree_view->priv->columns; list; list = list->next)
11145     if (!GTK_TREE_VIEW_COLUMN (list->data)->clickable)
11146       return FALSE;
11147
11148   return TRUE;
11149 }
11150
11151 /**
11152  * gtk_tree_view_set_rules_hint
11153  * @tree_view: a #GtkTreeView
11154  * @setting: %TRUE if the tree requires reading across rows
11155  *
11156  * This function tells GTK+ that the user interface for your
11157  * application requires users to read across tree rows and associate
11158  * cells with one another. By default, GTK+ will then render the tree
11159  * with alternating row colors. Do <emphasis>not</emphasis> use it
11160  * just because you prefer the appearance of the ruled tree; that's a
11161  * question for the theme. Some themes will draw tree rows in
11162  * alternating colors even when rules are turned off, and users who
11163  * prefer that appearance all the time can choose those themes. You
11164  * should call this function only as a <emphasis>semantic</emphasis>
11165  * hint to the theme engine that your tree makes alternating colors
11166  * useful from a functional standpoint (since it has lots of columns,
11167  * generally).
11168  *
11169  **/
11170 void
11171 gtk_tree_view_set_rules_hint (GtkTreeView  *tree_view,
11172                               gboolean      setting)
11173 {
11174   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
11175
11176   setting = setting != FALSE;
11177
11178   if (tree_view->priv->has_rules != setting)
11179     {
11180       tree_view->priv->has_rules = setting;
11181       gtk_widget_queue_draw (GTK_WIDGET (tree_view));
11182     }
11183
11184   g_object_notify (G_OBJECT (tree_view), "rules-hint");
11185 }
11186
11187 /**
11188  * gtk_tree_view_get_rules_hint
11189  * @tree_view: a #GtkTreeView
11190  *
11191  * Gets the setting set by gtk_tree_view_set_rules_hint().
11192  *
11193  * Return value: %TRUE if rules are useful for the user of this tree
11194  **/
11195 gboolean
11196 gtk_tree_view_get_rules_hint (GtkTreeView  *tree_view)
11197 {
11198   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), FALSE);
11199
11200   return tree_view->priv->has_rules;
11201 }
11202
11203 /* Public Column functions
11204  */
11205
11206 /**
11207  * gtk_tree_view_append_column:
11208  * @tree_view: A #GtkTreeView.
11209  * @column: The #GtkTreeViewColumn to add.
11210  *
11211  * Appends @column to the list of columns. If @tree_view has "fixed_height"
11212  * mode enabled, then @column must have its "sizing" property set to be
11213  * GTK_TREE_VIEW_COLUMN_FIXED.
11214  *
11215  * Return value: The number of columns in @tree_view after appending.
11216  **/
11217 gint
11218 gtk_tree_view_append_column (GtkTreeView       *tree_view,
11219                              GtkTreeViewColumn *column)
11220 {
11221   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), -1);
11222   g_return_val_if_fail (GTK_IS_TREE_VIEW_COLUMN (column), -1);
11223   g_return_val_if_fail (column->tree_view == NULL, -1);
11224
11225   return gtk_tree_view_insert_column (tree_view, column, -1);
11226 }
11227
11228
11229 /**
11230  * gtk_tree_view_remove_column:
11231  * @tree_view: A #GtkTreeView.
11232  * @column: The #GtkTreeViewColumn to remove.
11233  *
11234  * Removes @column from @tree_view.
11235  *
11236  * Return value: The number of columns in @tree_view after removing.
11237  **/
11238 gint
11239 gtk_tree_view_remove_column (GtkTreeView       *tree_view,
11240                              GtkTreeViewColumn *column)
11241 {
11242   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), -1);
11243   g_return_val_if_fail (GTK_IS_TREE_VIEW_COLUMN (column), -1);
11244   g_return_val_if_fail (column->tree_view == GTK_WIDGET (tree_view), -1);
11245
11246   if (tree_view->priv->focus_column == column)
11247     tree_view->priv->focus_column = NULL;
11248
11249   if (tree_view->priv->edited_column == column)
11250     {
11251       gtk_tree_view_stop_editing (tree_view, TRUE);
11252
11253       /* no need to, but just to be sure ... */
11254       tree_view->priv->edited_column = NULL;
11255     }
11256
11257   if (tree_view->priv->expander_column == column)
11258     tree_view->priv->expander_column = NULL;
11259
11260   g_signal_handlers_disconnect_by_func (column,
11261                                         G_CALLBACK (column_sizing_notify),
11262                                         tree_view);
11263
11264   _gtk_tree_view_column_unset_tree_view (column);
11265
11266   tree_view->priv->columns = g_list_remove (tree_view->priv->columns, column);
11267   tree_view->priv->n_columns--;
11268
11269   if (gtk_widget_get_realized (GTK_WIDGET (tree_view)))
11270     {
11271       GList *list;
11272
11273       _gtk_tree_view_column_unrealize_button (column);
11274       for (list = tree_view->priv->columns; list; list = list->next)
11275         {
11276           GtkTreeViewColumn *tmp_column;
11277
11278           tmp_column = GTK_TREE_VIEW_COLUMN (list->data);
11279           if (tmp_column->visible)
11280             _gtk_tree_view_column_cell_set_dirty (tmp_column, TRUE);
11281         }
11282
11283       if (tree_view->priv->n_columns == 0 &&
11284           gtk_tree_view_get_headers_visible (tree_view))
11285         gdk_window_hide (tree_view->priv->header_window);
11286
11287       gtk_widget_queue_resize (GTK_WIDGET (tree_view));
11288     }
11289
11290   g_object_unref (column);
11291   g_signal_emit (tree_view, tree_view_signals[COLUMNS_CHANGED], 0);
11292
11293   return tree_view->priv->n_columns;
11294 }
11295
11296 /**
11297  * gtk_tree_view_insert_column:
11298  * @tree_view: A #GtkTreeView.
11299  * @column: The #GtkTreeViewColumn to be inserted.
11300  * @position: The position to insert @column in.
11301  *
11302  * This inserts the @column into the @tree_view at @position.  If @position is
11303  * -1, then the column is inserted at the end. If @tree_view has
11304  * "fixed_height" mode enabled, then @column must have its "sizing" property
11305  * set to be GTK_TREE_VIEW_COLUMN_FIXED.
11306  *
11307  * Return value: The number of columns in @tree_view after insertion.
11308  **/
11309 gint
11310 gtk_tree_view_insert_column (GtkTreeView       *tree_view,
11311                              GtkTreeViewColumn *column,
11312                              gint               position)
11313 {
11314   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), -1);
11315   g_return_val_if_fail (GTK_IS_TREE_VIEW_COLUMN (column), -1);
11316   g_return_val_if_fail (column->tree_view == NULL, -1);
11317
11318   if (tree_view->priv->fixed_height_mode)
11319     g_return_val_if_fail (gtk_tree_view_column_get_sizing (column)
11320                           == GTK_TREE_VIEW_COLUMN_FIXED, -1);
11321
11322   g_object_ref_sink (column);
11323
11324   if (tree_view->priv->n_columns == 0 &&
11325       gtk_widget_get_realized (GTK_WIDGET (tree_view)) &&
11326       gtk_tree_view_get_headers_visible (tree_view))
11327     {
11328       gdk_window_show (tree_view->priv->header_window);
11329     }
11330
11331   g_signal_connect (column, "notify::sizing",
11332                     G_CALLBACK (column_sizing_notify), tree_view);
11333
11334   tree_view->priv->columns = g_list_insert (tree_view->priv->columns,
11335                                             column, position);
11336   tree_view->priv->n_columns++;
11337
11338   _gtk_tree_view_column_set_tree_view (column, tree_view);
11339
11340   if (gtk_widget_get_realized (GTK_WIDGET (tree_view)))
11341     {
11342       GList *list;
11343
11344       _gtk_tree_view_column_realize_button (column);
11345
11346       for (list = tree_view->priv->columns; list; list = list->next)
11347         {
11348           column = GTK_TREE_VIEW_COLUMN (list->data);
11349           if (column->visible)
11350             _gtk_tree_view_column_cell_set_dirty (column, TRUE);
11351         }
11352       gtk_widget_queue_resize (GTK_WIDGET (tree_view));
11353     }
11354
11355   g_signal_emit (tree_view, tree_view_signals[COLUMNS_CHANGED], 0);
11356
11357   return tree_view->priv->n_columns;
11358 }
11359
11360 /**
11361  * gtk_tree_view_insert_column_with_attributes:
11362  * @tree_view: A #GtkTreeView
11363  * @position: The position to insert the new column in.
11364  * @title: The title to set the header to.
11365  * @cell: The #GtkCellRenderer.
11366  * @Varargs: A %NULL-terminated list of attributes.
11367  *
11368  * Creates a new #GtkTreeViewColumn and inserts it into the @tree_view at
11369  * @position.  If @position is -1, then the newly created column is inserted at
11370  * the end.  The column is initialized with the attributes given. If @tree_view
11371  * has "fixed_height" mode enabled, then the new column will have its sizing
11372  * property set to be GTK_TREE_VIEW_COLUMN_FIXED.
11373  *
11374  * Return value: The number of columns in @tree_view after insertion.
11375  **/
11376 gint
11377 gtk_tree_view_insert_column_with_attributes (GtkTreeView     *tree_view,
11378                                              gint             position,
11379                                              const gchar     *title,
11380                                              GtkCellRenderer *cell,
11381                                              ...)
11382 {
11383   GtkTreeViewColumn *column;
11384   gchar *attribute;
11385   va_list args;
11386   gint column_id;
11387
11388   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), -1);
11389
11390   column = gtk_tree_view_column_new ();
11391   if (tree_view->priv->fixed_height_mode)
11392     gtk_tree_view_column_set_sizing (column, GTK_TREE_VIEW_COLUMN_FIXED);
11393
11394   gtk_tree_view_column_set_title (column, title);
11395   gtk_tree_view_column_pack_start (column, cell, TRUE);
11396
11397   va_start (args, cell);
11398
11399   attribute = va_arg (args, gchar *);
11400
11401   while (attribute != NULL)
11402     {
11403       column_id = va_arg (args, gint);
11404       gtk_tree_view_column_add_attribute (column, cell, attribute, column_id);
11405       attribute = va_arg (args, gchar *);
11406     }
11407
11408   va_end (args);
11409
11410   gtk_tree_view_insert_column (tree_view, column, position);
11411
11412   return tree_view->priv->n_columns;
11413 }
11414
11415 /**
11416  * gtk_tree_view_insert_column_with_data_func:
11417  * @tree_view: a #GtkTreeView
11418  * @position: Position to insert, -1 for append
11419  * @title: column title
11420  * @cell: cell renderer for column
11421  * @func: function to set attributes of cell renderer
11422  * @data: data for @func
11423  * @dnotify: destroy notifier for @data
11424  *
11425  * Convenience function that inserts a new column into the #GtkTreeView
11426  * with the given cell renderer and a #GtkCellDataFunc to set cell renderer
11427  * attributes (normally using data from the model). See also
11428  * gtk_tree_view_column_set_cell_data_func(), gtk_tree_view_column_pack_start().
11429  * If @tree_view has "fixed_height" mode enabled, then the new column will have its
11430  * "sizing" property set to be GTK_TREE_VIEW_COLUMN_FIXED.
11431  *
11432  * Return value: number of columns in the tree view post-insert
11433  **/
11434 gint
11435 gtk_tree_view_insert_column_with_data_func  (GtkTreeView               *tree_view,
11436                                              gint                       position,
11437                                              const gchar               *title,
11438                                              GtkCellRenderer           *cell,
11439                                              GtkTreeCellDataFunc        func,
11440                                              gpointer                   data,
11441                                              GDestroyNotify             dnotify)
11442 {
11443   GtkTreeViewColumn *column;
11444
11445   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), -1);
11446
11447   column = gtk_tree_view_column_new ();
11448   if (tree_view->priv->fixed_height_mode)
11449     gtk_tree_view_column_set_sizing (column, GTK_TREE_VIEW_COLUMN_FIXED);
11450
11451   gtk_tree_view_column_set_title (column, title);
11452   gtk_tree_view_column_pack_start (column, cell, TRUE);
11453   gtk_tree_view_column_set_cell_data_func (column, cell, func, data, dnotify);
11454
11455   gtk_tree_view_insert_column (tree_view, column, position);
11456
11457   return tree_view->priv->n_columns;
11458 }
11459
11460 /**
11461  * gtk_tree_view_get_column:
11462  * @tree_view: A #GtkTreeView.
11463  * @n: The position of the column, counting from 0.
11464  *
11465  * Gets the #GtkTreeViewColumn at the given position in the #tree_view.
11466  *
11467  * Return value: The #GtkTreeViewColumn, or %NULL if the position is outside the
11468  * range of columns.
11469  **/
11470 GtkTreeViewColumn *
11471 gtk_tree_view_get_column (GtkTreeView *tree_view,
11472                           gint         n)
11473 {
11474   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), NULL);
11475
11476   if (n < 0 || n >= tree_view->priv->n_columns)
11477     return NULL;
11478
11479   if (tree_view->priv->columns == NULL)
11480     return NULL;
11481
11482   return GTK_TREE_VIEW_COLUMN (g_list_nth (tree_view->priv->columns, n)->data);
11483 }
11484
11485 /**
11486  * gtk_tree_view_get_columns:
11487  * @tree_view: A #GtkTreeView
11488  *
11489  * Returns a #GList of all the #GtkTreeViewColumn s currently in @tree_view.
11490  * The returned list must be freed with g_list_free ().
11491  *
11492  * Return value: (element-type GtkTreeViewColumn) (transfer container): A list of #GtkTreeViewColumn s
11493  **/
11494 GList *
11495 gtk_tree_view_get_columns (GtkTreeView *tree_view)
11496 {
11497   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), NULL);
11498
11499   return g_list_copy (tree_view->priv->columns);
11500 }
11501
11502 /**
11503  * gtk_tree_view_move_column_after:
11504  * @tree_view: A #GtkTreeView
11505  * @column: The #GtkTreeViewColumn to be moved.
11506  * @base_column: (allow-none): The #GtkTreeViewColumn to be moved relative to, or %NULL.
11507  *
11508  * Moves @column to be after to @base_column.  If @base_column is %NULL, then
11509  * @column is placed in the first position.
11510  **/
11511 void
11512 gtk_tree_view_move_column_after (GtkTreeView       *tree_view,
11513                                  GtkTreeViewColumn *column,
11514                                  GtkTreeViewColumn *base_column)
11515 {
11516   GList *column_list_el, *base_el = NULL;
11517
11518   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
11519
11520   column_list_el = g_list_find (tree_view->priv->columns, column);
11521   g_return_if_fail (column_list_el != NULL);
11522
11523   if (base_column)
11524     {
11525       base_el = g_list_find (tree_view->priv->columns, base_column);
11526       g_return_if_fail (base_el != NULL);
11527     }
11528
11529   if (column_list_el->prev == base_el)
11530     return;
11531
11532   tree_view->priv->columns = g_list_remove_link (tree_view->priv->columns, column_list_el);
11533   if (base_el == NULL)
11534     {
11535       column_list_el->prev = NULL;
11536       column_list_el->next = tree_view->priv->columns;
11537       if (column_list_el->next)
11538         column_list_el->next->prev = column_list_el;
11539       tree_view->priv->columns = column_list_el;
11540     }
11541   else
11542     {
11543       column_list_el->prev = base_el;
11544       column_list_el->next = base_el->next;
11545       if (column_list_el->next)
11546         column_list_el->next->prev = column_list_el;
11547       base_el->next = column_list_el;
11548     }
11549
11550   if (gtk_widget_get_realized (GTK_WIDGET (tree_view)))
11551     {
11552       gtk_widget_queue_resize (GTK_WIDGET (tree_view));
11553       gtk_tree_view_size_allocate_columns (GTK_WIDGET (tree_view), NULL);
11554     }
11555
11556   g_signal_emit (tree_view, tree_view_signals[COLUMNS_CHANGED], 0);
11557 }
11558
11559 /**
11560  * gtk_tree_view_set_expander_column:
11561  * @tree_view: A #GtkTreeView
11562  * @column: %NULL, or the column to draw the expander arrow at.
11563  *
11564  * Sets the column to draw the expander arrow at. It must be in @tree_view.
11565  * If @column is %NULL, then the expander arrow is always at the first
11566  * visible column.
11567  *
11568  * If you do not want expander arrow to appear in your tree, set the
11569  * expander column to a hidden column.
11570  **/
11571 void
11572 gtk_tree_view_set_expander_column (GtkTreeView       *tree_view,
11573                                    GtkTreeViewColumn *column)
11574 {
11575   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
11576   g_return_if_fail (column == NULL || GTK_IS_TREE_VIEW_COLUMN (column));
11577
11578   if (tree_view->priv->expander_column != column)
11579     {
11580       GList *list;
11581
11582       if (column)
11583         {
11584           /* Confirm that column is in tree_view */
11585           for (list = tree_view->priv->columns; list; list = list->next)
11586             if (list->data == column)
11587               break;
11588           g_return_if_fail (list != NULL);
11589         }
11590
11591       tree_view->priv->expander_column = column;
11592       g_object_notify (G_OBJECT (tree_view), "expander-column");
11593     }
11594 }
11595
11596 /**
11597  * gtk_tree_view_get_expander_column:
11598  * @tree_view: A #GtkTreeView
11599  *
11600  * Returns the column that is the current expander column.  This
11601  * column has the expander arrow drawn next to it.
11602  *
11603  * Return value: The expander column.
11604  **/
11605 GtkTreeViewColumn *
11606 gtk_tree_view_get_expander_column (GtkTreeView *tree_view)
11607 {
11608   GList *list;
11609
11610   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), NULL);
11611
11612   for (list = tree_view->priv->columns; list; list = list->next)
11613     if (gtk_tree_view_is_expander_column (tree_view, GTK_TREE_VIEW_COLUMN (list->data)))
11614       return (GtkTreeViewColumn *) list->data;
11615   return NULL;
11616 }
11617
11618
11619 /**
11620  * gtk_tree_view_set_column_drag_function:
11621  * @tree_view: A #GtkTreeView.
11622  * @func: (allow-none): A function to determine which columns are reorderable, or %NULL.
11623  * @user_data: (allow-none): User data to be passed to @func, or %NULL
11624  * @destroy: (allow-none): Destroy notifier for @user_data, or %NULL
11625  *
11626  * Sets a user function for determining where a column may be dropped when
11627  * dragged.  This function is called on every column pair in turn at the
11628  * beginning of a column drag to determine where a drop can take place.  The
11629  * arguments passed to @func are: the @tree_view, the #GtkTreeViewColumn being
11630  * dragged, the two #GtkTreeViewColumn s determining the drop spot, and
11631  * @user_data.  If either of the #GtkTreeViewColumn arguments for the drop spot
11632  * are %NULL, then they indicate an edge.  If @func is set to be %NULL, then
11633  * @tree_view reverts to the default behavior of allowing all columns to be
11634  * dropped everywhere.
11635  **/
11636 void
11637 gtk_tree_view_set_column_drag_function (GtkTreeView               *tree_view,
11638                                         GtkTreeViewColumnDropFunc  func,
11639                                         gpointer                   user_data,
11640                                         GDestroyNotify             destroy)
11641 {
11642   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
11643
11644   if (tree_view->priv->column_drop_func_data_destroy)
11645     tree_view->priv->column_drop_func_data_destroy (tree_view->priv->column_drop_func_data);
11646
11647   tree_view->priv->column_drop_func = func;
11648   tree_view->priv->column_drop_func_data = user_data;
11649   tree_view->priv->column_drop_func_data_destroy = destroy;
11650 }
11651
11652 /**
11653  * gtk_tree_view_scroll_to_point:
11654  * @tree_view: a #GtkTreeView
11655  * @tree_x: X coordinate of new top-left pixel of visible area, or -1
11656  * @tree_y: Y coordinate of new top-left pixel of visible area, or -1
11657  *
11658  * Scrolls the tree view such that the top-left corner of the visible
11659  * area is @tree_x, @tree_y, where @tree_x and @tree_y are specified
11660  * in tree coordinates.  The @tree_view must be realized before
11661  * this function is called.  If it isn't, you probably want to be
11662  * using gtk_tree_view_scroll_to_cell().
11663  *
11664  * If either @tree_x or @tree_y are -1, then that direction isn't scrolled.
11665  **/
11666 void
11667 gtk_tree_view_scroll_to_point (GtkTreeView *tree_view,
11668                                gint         tree_x,
11669                                gint         tree_y)
11670 {
11671   GtkAdjustment *hadj;
11672   GtkAdjustment *vadj;
11673
11674   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
11675   g_return_if_fail (gtk_widget_get_realized (GTK_WIDGET (tree_view)));
11676
11677   hadj = tree_view->priv->hadjustment;
11678   vadj = tree_view->priv->vadjustment;
11679
11680   if (tree_x != -1)
11681     gtk_adjustment_set_value (hadj, tree_x);
11682   if (tree_y != -1)
11683     gtk_adjustment_set_value (vadj, tree_y);
11684 }
11685
11686 /**
11687  * gtk_tree_view_scroll_to_cell:
11688  * @tree_view: A #GtkTreeView.
11689  * @path: (allow-none): The path of the row to move to, or %NULL.
11690  * @column: (allow-none): The #GtkTreeViewColumn to move horizontally to, or %NULL.
11691  * @use_align: whether to use alignment arguments, or %FALSE.
11692  * @row_align: The vertical alignment of the row specified by @path.
11693  * @col_align: The horizontal alignment of the column specified by @column.
11694  *
11695  * Moves the alignments of @tree_view to the position specified by @column and
11696  * @path.  If @column is %NULL, then no horizontal scrolling occurs.  Likewise,
11697  * if @path is %NULL no vertical scrolling occurs.  At a minimum, one of @column
11698  * or @path need to be non-%NULL.  @row_align determines where the row is
11699  * placed, and @col_align determines where @column is placed.  Both are expected
11700  * to be between 0.0 and 1.0. 0.0 means left/top alignment, 1.0 means
11701  * right/bottom alignment, 0.5 means center.
11702  *
11703  * If @use_align is %FALSE, then the alignment arguments are ignored, and the
11704  * tree does the minimum amount of work to scroll the cell onto the screen.
11705  * This means that the cell will be scrolled to the edge closest to its current
11706  * position.  If the cell is currently visible on the screen, nothing is done.
11707  *
11708  * This function only works if the model is set, and @path is a valid row on the
11709  * model.  If the model changes before the @tree_view is realized, the centered
11710  * path will be modified to reflect this change.
11711  **/
11712 void
11713 gtk_tree_view_scroll_to_cell (GtkTreeView       *tree_view,
11714                               GtkTreePath       *path,
11715                               GtkTreeViewColumn *column,
11716                               gboolean           use_align,
11717                               gfloat             row_align,
11718                               gfloat             col_align)
11719 {
11720   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
11721   g_return_if_fail (tree_view->priv->model != NULL);
11722   g_return_if_fail (tree_view->priv->tree != NULL);
11723   g_return_if_fail (row_align >= 0.0 && row_align <= 1.0);
11724   g_return_if_fail (col_align >= 0.0 && col_align <= 1.0);
11725   g_return_if_fail (path != NULL || column != NULL);
11726
11727 #if 0
11728   g_print ("gtk_tree_view_scroll_to_cell:\npath: %s\ncolumn: %s\nuse_align: %d\nrow_align: %f\ncol_align: %f\n",
11729            gtk_tree_path_to_string (path), column?"non-null":"null", use_align, row_align, col_align);
11730 #endif
11731   row_align = CLAMP (row_align, 0.0, 1.0);
11732   col_align = CLAMP (col_align, 0.0, 1.0);
11733
11734
11735   /* Note: Despite the benefits that come from having one code path for the
11736    * scrolling code, we short-circuit validate_visible_area's immplementation as
11737    * it is much slower than just going to the point.
11738    */
11739   if (!gtk_widget_get_visible (GTK_WIDGET (tree_view)) ||
11740       !gtk_widget_get_realized (GTK_WIDGET (tree_view)) ||
11741       GTK_WIDGET_ALLOC_NEEDED (tree_view) ||
11742       GTK_RBNODE_FLAG_SET (tree_view->priv->tree->root, GTK_RBNODE_DESCENDANTS_INVALID))
11743     {
11744       if (tree_view->priv->scroll_to_path)
11745         gtk_tree_row_reference_free (tree_view->priv->scroll_to_path);
11746
11747       tree_view->priv->scroll_to_path = NULL;
11748       tree_view->priv->scroll_to_column = NULL;
11749
11750       if (path)
11751         tree_view->priv->scroll_to_path = gtk_tree_row_reference_new_proxy (G_OBJECT (tree_view), tree_view->priv->model, path);
11752       if (column)
11753         tree_view->priv->scroll_to_column = column;
11754       tree_view->priv->scroll_to_use_align = use_align;
11755       tree_view->priv->scroll_to_row_align = row_align;
11756       tree_view->priv->scroll_to_col_align = col_align;
11757
11758       install_presize_handler (tree_view);
11759     }
11760   else
11761     {
11762       GdkRectangle cell_rect;
11763       GdkRectangle vis_rect;
11764       gint dest_x, dest_y;
11765
11766       gtk_tree_view_get_background_area (tree_view, path, column, &cell_rect);
11767       gtk_tree_view_get_visible_rect (tree_view, &vis_rect);
11768
11769       cell_rect.y = TREE_WINDOW_Y_TO_RBTREE_Y (tree_view, cell_rect.y);
11770
11771       dest_x = vis_rect.x;
11772       dest_y = vis_rect.y;
11773
11774       if (column)
11775         {
11776           if (use_align)
11777             {
11778               dest_x = cell_rect.x - ((vis_rect.width - cell_rect.width) * col_align);
11779             }
11780           else
11781             {
11782               if (cell_rect.x < vis_rect.x)
11783                 dest_x = cell_rect.x;
11784               if (cell_rect.x + cell_rect.width > vis_rect.x + vis_rect.width)
11785                 dest_x = cell_rect.x + cell_rect.width - vis_rect.width;
11786             }
11787         }
11788
11789       if (path)
11790         {
11791           if (use_align)
11792             {
11793               dest_y = cell_rect.y - ((vis_rect.height - cell_rect.height) * row_align);
11794               dest_y = MAX (dest_y, 0);
11795             }
11796           else
11797             {
11798               if (cell_rect.y < vis_rect.y)
11799                 dest_y = cell_rect.y;
11800               if (cell_rect.y + cell_rect.height > vis_rect.y + vis_rect.height)
11801                 dest_y = cell_rect.y + cell_rect.height - vis_rect.height;
11802             }
11803         }
11804
11805       gtk_tree_view_scroll_to_point (tree_view, dest_x, dest_y);
11806     }
11807 }
11808
11809 /**
11810  * gtk_tree_view_row_activated:
11811  * @tree_view: A #GtkTreeView
11812  * @path: The #GtkTreePath to be activated.
11813  * @column: The #GtkTreeViewColumn to be activated.
11814  *
11815  * Activates the cell determined by @path and @column.
11816  **/
11817 void
11818 gtk_tree_view_row_activated (GtkTreeView       *tree_view,
11819                              GtkTreePath       *path,
11820                              GtkTreeViewColumn *column)
11821 {
11822   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
11823
11824   g_signal_emit (tree_view, tree_view_signals[ROW_ACTIVATED], 0, path, column);
11825 }
11826
11827
11828 static void
11829 gtk_tree_view_expand_all_emission_helper (GtkRBTree *tree,
11830                                           GtkRBNode *node,
11831                                           gpointer   data)
11832 {
11833   GtkTreeView *tree_view = data;
11834
11835   if ((node->flags & GTK_RBNODE_IS_PARENT) == GTK_RBNODE_IS_PARENT &&
11836       node->children)
11837     {
11838       GtkTreePath *path;
11839       GtkTreeIter iter;
11840
11841       path = _gtk_tree_view_find_path (tree_view, tree, node);
11842       gtk_tree_model_get_iter (tree_view->priv->model, &iter, path);
11843
11844       g_signal_emit (tree_view, tree_view_signals[ROW_EXPANDED], 0, &iter, path);
11845
11846       gtk_tree_path_free (path);
11847     }
11848
11849   if (node->children)
11850     _gtk_rbtree_traverse (node->children,
11851                           node->children->root,
11852                           G_PRE_ORDER,
11853                           gtk_tree_view_expand_all_emission_helper,
11854                           tree_view);
11855 }
11856
11857 /**
11858  * gtk_tree_view_expand_all:
11859  * @tree_view: A #GtkTreeView.
11860  *
11861  * Recursively expands all nodes in the @tree_view.
11862  **/
11863 void
11864 gtk_tree_view_expand_all (GtkTreeView *tree_view)
11865 {
11866   GtkTreePath *path;
11867   GtkRBTree *tree;
11868   GtkRBNode *node;
11869
11870   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
11871
11872   if (tree_view->priv->tree == NULL)
11873     return;
11874
11875   path = gtk_tree_path_new_first ();
11876   _gtk_tree_view_find_node (tree_view, path, &tree, &node);
11877
11878   while (node)
11879     {
11880       gtk_tree_view_real_expand_row (tree_view, path, tree, node, TRUE, FALSE);
11881       node = _gtk_rbtree_next (tree, node);
11882       gtk_tree_path_next (path);
11883   }
11884
11885   gtk_tree_path_free (path);
11886 }
11887
11888 /* Timeout to animate the expander during expands and collapses */
11889 static gboolean
11890 expand_collapse_timeout (gpointer data)
11891 {
11892   return do_expand_collapse (data);
11893 }
11894
11895 static void
11896 add_expand_collapse_timeout (GtkTreeView *tree_view,
11897                              GtkRBTree   *tree,
11898                              GtkRBNode   *node,
11899                              gboolean     expand)
11900 {
11901   if (tree_view->priv->expand_collapse_timeout != 0)
11902     return;
11903
11904   tree_view->priv->expand_collapse_timeout =
11905       gdk_threads_add_timeout (50, expand_collapse_timeout, tree_view);
11906   tree_view->priv->expanded_collapsed_tree = tree;
11907   tree_view->priv->expanded_collapsed_node = node;
11908
11909   if (expand)
11910     GTK_RBNODE_SET_FLAG (node, GTK_RBNODE_IS_SEMI_COLLAPSED);
11911   else
11912     GTK_RBNODE_SET_FLAG (node, GTK_RBNODE_IS_SEMI_EXPANDED);
11913 }
11914
11915 static void
11916 remove_expand_collapse_timeout (GtkTreeView *tree_view)
11917 {
11918   if (tree_view->priv->expand_collapse_timeout)
11919     {
11920       g_source_remove (tree_view->priv->expand_collapse_timeout);
11921       tree_view->priv->expand_collapse_timeout = 0;
11922     }
11923
11924   if (tree_view->priv->expanded_collapsed_node != NULL)
11925     {
11926       GTK_RBNODE_UNSET_FLAG (tree_view->priv->expanded_collapsed_node, GTK_RBNODE_IS_SEMI_EXPANDED);
11927       GTK_RBNODE_UNSET_FLAG (tree_view->priv->expanded_collapsed_node, GTK_RBNODE_IS_SEMI_COLLAPSED);
11928
11929       tree_view->priv->expanded_collapsed_node = NULL;
11930     }
11931 }
11932
11933 static void
11934 cancel_arrow_animation (GtkTreeView *tree_view)
11935 {
11936   if (tree_view->priv->expand_collapse_timeout)
11937     {
11938       while (do_expand_collapse (tree_view));
11939
11940       remove_expand_collapse_timeout (tree_view);
11941     }
11942 }
11943
11944 static gboolean
11945 do_expand_collapse (GtkTreeView *tree_view)
11946 {
11947   GtkRBNode *node;
11948   GtkRBTree *tree;
11949   gboolean expanding;
11950   gboolean redraw;
11951
11952   redraw = FALSE;
11953   expanding = TRUE;
11954
11955   node = tree_view->priv->expanded_collapsed_node;
11956   tree = tree_view->priv->expanded_collapsed_tree;
11957
11958   if (node->children == NULL)
11959     expanding = FALSE;
11960
11961   if (expanding)
11962     {
11963       if (GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_SEMI_COLLAPSED))
11964         {
11965           GTK_RBNODE_UNSET_FLAG (node, GTK_RBNODE_IS_SEMI_COLLAPSED);
11966           GTK_RBNODE_SET_FLAG (node, GTK_RBNODE_IS_SEMI_EXPANDED);
11967
11968           redraw = TRUE;
11969
11970         }
11971       else if (GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_SEMI_EXPANDED))
11972         {
11973           GTK_RBNODE_UNSET_FLAG (node, GTK_RBNODE_IS_SEMI_EXPANDED);
11974
11975           redraw = TRUE;
11976         }
11977     }
11978   else
11979     {
11980       if (GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_SEMI_EXPANDED))
11981         {
11982           GTK_RBNODE_UNSET_FLAG (node, GTK_RBNODE_IS_SEMI_EXPANDED);
11983           GTK_RBNODE_SET_FLAG (node, GTK_RBNODE_IS_SEMI_COLLAPSED);
11984
11985           redraw = TRUE;
11986         }
11987       else if (GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_SEMI_COLLAPSED))
11988         {
11989           GTK_RBNODE_UNSET_FLAG (node, GTK_RBNODE_IS_SEMI_COLLAPSED);
11990
11991           redraw = TRUE;
11992
11993         }
11994     }
11995
11996   if (redraw)
11997     {
11998       gtk_tree_view_queue_draw_arrow (tree_view, tree, node, NULL);
11999
12000       return TRUE;
12001     }
12002
12003   return FALSE;
12004 }
12005
12006 /**
12007  * gtk_tree_view_collapse_all:
12008  * @tree_view: A #GtkTreeView.
12009  *
12010  * Recursively collapses all visible, expanded nodes in @tree_view.
12011  **/
12012 void
12013 gtk_tree_view_collapse_all (GtkTreeView *tree_view)
12014 {
12015   GtkRBTree *tree;
12016   GtkRBNode *node;
12017   GtkTreePath *path;
12018   gint *indices;
12019
12020   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
12021
12022   if (tree_view->priv->tree == NULL)
12023     return;
12024
12025   path = gtk_tree_path_new ();
12026   gtk_tree_path_down (path);
12027   indices = gtk_tree_path_get_indices (path);
12028
12029   tree = tree_view->priv->tree;
12030   node = tree->root;
12031   while (node && node->left != tree->nil)
12032     node = node->left;
12033
12034   while (node)
12035     {
12036       if (node->children)
12037         gtk_tree_view_real_collapse_row (tree_view, path, tree, node, FALSE);
12038       indices[0]++;
12039       node = _gtk_rbtree_next (tree, node);
12040     }
12041
12042   gtk_tree_path_free (path);
12043 }
12044
12045 /**
12046  * gtk_tree_view_expand_to_path:
12047  * @tree_view: A #GtkTreeView.
12048  * @path: path to a row.
12049  *
12050  * Expands the row at @path. This will also expand all parent rows of
12051  * @path as necessary.
12052  *
12053  * Since: 2.2
12054  **/
12055 void
12056 gtk_tree_view_expand_to_path (GtkTreeView *tree_view,
12057                               GtkTreePath *path)
12058 {
12059   gint i, depth;
12060   gint *indices;
12061   GtkTreePath *tmp;
12062
12063   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
12064   g_return_if_fail (path != NULL);
12065
12066   depth = gtk_tree_path_get_depth (path);
12067   indices = gtk_tree_path_get_indices (path);
12068
12069   tmp = gtk_tree_path_new ();
12070   g_return_if_fail (tmp != NULL);
12071
12072   for (i = 0; i < depth; i++)
12073     {
12074       gtk_tree_path_append_index (tmp, indices[i]);
12075       gtk_tree_view_expand_row (tree_view, tmp, FALSE);
12076     }
12077
12078   gtk_tree_path_free (tmp);
12079 }
12080
12081 /* FIXME the bool return values for expand_row and collapse_row are
12082  * not analagous; they should be TRUE if the row had children and
12083  * was not already in the requested state.
12084  */
12085
12086
12087 static gboolean
12088 gtk_tree_view_real_expand_row (GtkTreeView *tree_view,
12089                                GtkTreePath *path,
12090                                GtkRBTree   *tree,
12091                                GtkRBNode   *node,
12092                                gboolean     open_all,
12093                                gboolean     animate)
12094 {
12095   GtkTreeIter iter;
12096   GtkTreeIter temp;
12097   gboolean expand;
12098
12099   if (animate)
12100     g_object_get (gtk_widget_get_settings (GTK_WIDGET (tree_view)),
12101                   "gtk-enable-animations", &animate,
12102                   NULL);
12103
12104   remove_auto_expand_timeout (tree_view);
12105
12106   if (node->children && !open_all)
12107     return FALSE;
12108
12109   if (! GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_PARENT))
12110     return FALSE;
12111
12112   gtk_tree_model_get_iter (tree_view->priv->model, &iter, path);
12113   if (! gtk_tree_model_iter_has_child (tree_view->priv->model, &iter))
12114     return FALSE;
12115
12116
12117    if (node->children && open_all)
12118     {
12119       gboolean retval = FALSE;
12120       GtkTreePath *tmp_path = gtk_tree_path_copy (path);
12121
12122       gtk_tree_path_append_index (tmp_path, 0);
12123       tree = node->children;
12124       node = tree->root;
12125       while (node->left != tree->nil)
12126         node = node->left;
12127       /* try to expand the children */
12128       do
12129         {
12130          gboolean t;
12131          t = gtk_tree_view_real_expand_row (tree_view, tmp_path, tree, node,
12132                                             TRUE, animate);
12133          if (t)
12134            retval = TRUE;
12135
12136          gtk_tree_path_next (tmp_path);
12137          node = _gtk_rbtree_next (tree, node);
12138        }
12139       while (node != NULL);
12140
12141       gtk_tree_path_free (tmp_path);
12142
12143       return retval;
12144     }
12145
12146   g_signal_emit (tree_view, tree_view_signals[TEST_EXPAND_ROW], 0, &iter, path, &expand);
12147
12148   if (!gtk_tree_model_iter_has_child (tree_view->priv->model, &iter))
12149     return FALSE;
12150
12151   if (expand)
12152     return FALSE;
12153
12154   node->children = _gtk_rbtree_new ();
12155   node->children->parent_tree = tree;
12156   node->children->parent_node = node;
12157
12158   gtk_tree_model_iter_children (tree_view->priv->model, &temp, &iter);
12159
12160   gtk_tree_view_build_tree (tree_view,
12161                             node->children,
12162                             &temp,
12163                             gtk_tree_path_get_depth (path) + 1,
12164                             open_all);
12165
12166   remove_expand_collapse_timeout (tree_view);
12167
12168   if (animate)
12169     add_expand_collapse_timeout (tree_view, tree, node, TRUE);
12170
12171   install_presize_handler (tree_view);
12172
12173   g_signal_emit (tree_view, tree_view_signals[ROW_EXPANDED], 0, &iter, path);
12174   if (open_all && node->children)
12175     {
12176       _gtk_rbtree_traverse (node->children,
12177                             node->children->root,
12178                             G_PRE_ORDER,
12179                             gtk_tree_view_expand_all_emission_helper,
12180                             tree_view);
12181     }
12182   return TRUE;
12183 }
12184
12185
12186 /**
12187  * gtk_tree_view_expand_row:
12188  * @tree_view: a #GtkTreeView
12189  * @path: path to a row
12190  * @open_all: whether to recursively expand, or just expand immediate children
12191  *
12192  * Opens the row so its children are visible.
12193  *
12194  * Return value: %TRUE if the row existed and had children
12195  **/
12196 gboolean
12197 gtk_tree_view_expand_row (GtkTreeView *tree_view,
12198                           GtkTreePath *path,
12199                           gboolean     open_all)
12200 {
12201   GtkRBTree *tree;
12202   GtkRBNode *node;
12203
12204   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), FALSE);
12205   g_return_val_if_fail (tree_view->priv->model != NULL, FALSE);
12206   g_return_val_if_fail (path != NULL, FALSE);
12207
12208   if (_gtk_tree_view_find_node (tree_view,
12209                                 path,
12210                                 &tree,
12211                                 &node))
12212     return FALSE;
12213
12214   if (tree != NULL)
12215     return gtk_tree_view_real_expand_row (tree_view, path, tree, node, open_all, FALSE);
12216   else
12217     return FALSE;
12218 }
12219
12220 static gboolean
12221 gtk_tree_view_real_collapse_row (GtkTreeView *tree_view,
12222                                  GtkTreePath *path,
12223                                  GtkRBTree   *tree,
12224                                  GtkRBNode   *node,
12225                                  gboolean     animate)
12226 {
12227   GtkTreeIter iter;
12228   GtkTreeIter children;
12229   gboolean collapse;
12230   gint x, y;
12231   GList *list;
12232   GdkWindow *child, *parent;
12233
12234   if (animate)
12235     g_object_get (gtk_widget_get_settings (GTK_WIDGET (tree_view)),
12236                   "gtk-enable-animations", &animate,
12237                   NULL);
12238
12239   remove_auto_expand_timeout (tree_view);
12240
12241   if (node->children == NULL)
12242     return FALSE;
12243
12244   gtk_tree_model_get_iter (tree_view->priv->model, &iter, path);
12245
12246   g_signal_emit (tree_view, tree_view_signals[TEST_COLLAPSE_ROW], 0, &iter, path, &collapse);
12247
12248   if (collapse)
12249     return FALSE;
12250
12251   /* if the prelighted node is a child of us, we want to unprelight it.  We have
12252    * a chance to prelight the correct node below */
12253
12254   if (tree_view->priv->prelight_tree)
12255     {
12256       GtkRBTree *parent_tree;
12257       GtkRBNode *parent_node;
12258
12259       parent_tree = tree_view->priv->prelight_tree->parent_tree;
12260       parent_node = tree_view->priv->prelight_tree->parent_node;
12261       while (parent_tree)
12262         {
12263           if (parent_tree == tree && parent_node == node)
12264             {
12265               ensure_unprelighted (tree_view);
12266               break;
12267             }
12268           parent_node = parent_tree->parent_node;
12269           parent_tree = parent_tree->parent_tree;
12270         }
12271     }
12272
12273   TREE_VIEW_INTERNAL_ASSERT (gtk_tree_model_iter_children (tree_view->priv->model, &children, &iter), FALSE);
12274
12275   for (list = tree_view->priv->columns; list; list = list->next)
12276     {
12277       GtkTreeViewColumn *column = list->data;
12278
12279       if (column->visible == FALSE)
12280         continue;
12281       if (gtk_tree_view_column_get_sizing (column) == GTK_TREE_VIEW_COLUMN_AUTOSIZE)
12282         _gtk_tree_view_column_cell_set_dirty (column, TRUE);
12283     }
12284
12285   if (tree_view->priv->destroy_count_func)
12286     {
12287       GtkTreePath *child_path;
12288       gint child_count = 0;
12289       child_path = gtk_tree_path_copy (path);
12290       gtk_tree_path_down (child_path);
12291       if (node->children)
12292         _gtk_rbtree_traverse (node->children, node->children->root, G_POST_ORDER, count_children_helper, &child_count);
12293       tree_view->priv->destroy_count_func (tree_view, child_path, child_count, tree_view->priv->destroy_count_data);
12294       gtk_tree_path_free (child_path);
12295     }
12296
12297   if (gtk_tree_row_reference_valid (tree_view->priv->cursor))
12298     {
12299       GtkTreePath *cursor_path = gtk_tree_row_reference_get_path (tree_view->priv->cursor);
12300
12301       if (gtk_tree_path_is_ancestor (path, cursor_path))
12302         {
12303           gtk_tree_row_reference_free (tree_view->priv->cursor);
12304           tree_view->priv->cursor = gtk_tree_row_reference_new_proxy (G_OBJECT (tree_view),
12305                                                                       tree_view->priv->model,
12306                                                                       path);
12307         }
12308       gtk_tree_path_free (cursor_path);
12309     }
12310
12311   if (gtk_tree_row_reference_valid (tree_view->priv->anchor))
12312     {
12313       GtkTreePath *anchor_path = gtk_tree_row_reference_get_path (tree_view->priv->anchor);
12314       if (gtk_tree_path_is_ancestor (path, anchor_path))
12315         {
12316           gtk_tree_row_reference_free (tree_view->priv->anchor);
12317           tree_view->priv->anchor = NULL;
12318         }
12319       gtk_tree_path_free (anchor_path);
12320     }
12321
12322   /* Stop a pending double click */
12323   tree_view->priv->last_button_x = -1;
12324   tree_view->priv->last_button_y = -1;
12325
12326   remove_expand_collapse_timeout (tree_view);
12327
12328   if (gtk_tree_view_unref_and_check_selection_tree (tree_view, node->children))
12329     {
12330       _gtk_rbtree_remove (node->children);
12331       g_signal_emit_by_name (tree_view->priv->selection, "changed");
12332     }
12333   else
12334     _gtk_rbtree_remove (node->children);
12335
12336   if (animate)
12337     add_expand_collapse_timeout (tree_view, tree, node, FALSE);
12338
12339   if (gtk_widget_get_mapped (GTK_WIDGET (tree_view)))
12340     {
12341       gtk_widget_queue_resize (GTK_WIDGET (tree_view));
12342     }
12343
12344   g_signal_emit (tree_view, tree_view_signals[ROW_COLLAPSED], 0, &iter, path);
12345
12346   if (gtk_widget_get_mapped (GTK_WIDGET (tree_view)))
12347     {
12348       /* now that we've collapsed all rows, we want to try to set the prelight
12349        * again. To do this, we fake a motion event and send it to ourselves. */
12350
12351       child = tree_view->priv->bin_window;
12352       parent = gdk_window_get_parent (child);
12353
12354       if (gdk_window_get_pointer (parent, &x, &y, NULL) == child)
12355         {
12356           GdkEventMotion event;
12357           gint child_x, child_y;
12358
12359           gdk_window_get_position (child, &child_x, &child_y);
12360
12361           event.window = tree_view->priv->bin_window;
12362           event.x = x - child_x;
12363           event.y = y - child_y;
12364
12365           /* despite the fact this isn't a real event, I'm almost positive it will
12366            * never trigger a drag event.  maybe_drag is the only function that uses
12367            * more than just event.x and event.y. */
12368           gtk_tree_view_motion_bin_window (GTK_WIDGET (tree_view), &event);
12369         }
12370     }
12371
12372   return TRUE;
12373 }
12374
12375 /**
12376  * gtk_tree_view_collapse_row:
12377  * @tree_view: a #GtkTreeView
12378  * @path: path to a row in the @tree_view
12379  *
12380  * Collapses a row (hides its child rows, if they exist).
12381  *
12382  * Return value: %TRUE if the row was collapsed.
12383  **/
12384 gboolean
12385 gtk_tree_view_collapse_row (GtkTreeView *tree_view,
12386                             GtkTreePath *path)
12387 {
12388   GtkRBTree *tree;
12389   GtkRBNode *node;
12390
12391   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), FALSE);
12392   g_return_val_if_fail (tree_view->priv->tree != NULL, FALSE);
12393   g_return_val_if_fail (path != NULL, FALSE);
12394
12395   if (_gtk_tree_view_find_node (tree_view,
12396                                 path,
12397                                 &tree,
12398                                 &node))
12399     return FALSE;
12400
12401   if (tree == NULL || node->children == NULL)
12402     return FALSE;
12403
12404   return gtk_tree_view_real_collapse_row (tree_view, path, tree, node, FALSE);
12405 }
12406
12407 static void
12408 gtk_tree_view_map_expanded_rows_helper (GtkTreeView            *tree_view,
12409                                         GtkRBTree              *tree,
12410                                         GtkTreePath            *path,
12411                                         GtkTreeViewMappingFunc  func,
12412                                         gpointer                user_data)
12413 {
12414   GtkRBNode *node;
12415
12416   if (tree == NULL || tree->root == NULL)
12417     return;
12418
12419   node = tree->root;
12420
12421   while (node && node->left != tree->nil)
12422     node = node->left;
12423
12424   while (node)
12425     {
12426       if (node->children)
12427         {
12428           (* func) (tree_view, path, user_data);
12429           gtk_tree_path_down (path);
12430           gtk_tree_view_map_expanded_rows_helper (tree_view, node->children, path, func, user_data);
12431           gtk_tree_path_up (path);
12432         }
12433       gtk_tree_path_next (path);
12434       node = _gtk_rbtree_next (tree, node);
12435     }
12436 }
12437
12438 /**
12439  * gtk_tree_view_map_expanded_rows:
12440  * @tree_view: A #GtkTreeView
12441  * @func: A function to be called
12442  * @data: User data to be passed to the function.
12443  *
12444  * Calls @func on all expanded rows.
12445  **/
12446 void
12447 gtk_tree_view_map_expanded_rows (GtkTreeView            *tree_view,
12448                                  GtkTreeViewMappingFunc  func,
12449                                  gpointer                user_data)
12450 {
12451   GtkTreePath *path;
12452
12453   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
12454   g_return_if_fail (func != NULL);
12455
12456   path = gtk_tree_path_new_first ();
12457
12458   gtk_tree_view_map_expanded_rows_helper (tree_view,
12459                                           tree_view->priv->tree,
12460                                           path, func, user_data);
12461
12462   gtk_tree_path_free (path);
12463 }
12464
12465 /**
12466  * gtk_tree_view_row_expanded:
12467  * @tree_view: A #GtkTreeView.
12468  * @path: A #GtkTreePath to test expansion state.
12469  *
12470  * Returns %TRUE if the node pointed to by @path is expanded in @tree_view.
12471  *
12472  * Return value: %TRUE if #path is expanded.
12473  **/
12474 gboolean
12475 gtk_tree_view_row_expanded (GtkTreeView *tree_view,
12476                             GtkTreePath *path)
12477 {
12478   GtkRBTree *tree;
12479   GtkRBNode *node;
12480
12481   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), FALSE);
12482   g_return_val_if_fail (path != NULL, FALSE);
12483
12484   _gtk_tree_view_find_node (tree_view, path, &tree, &node);
12485
12486   if (node == NULL)
12487     return FALSE;
12488
12489   return (node->children != NULL);
12490 }
12491
12492 /**
12493  * gtk_tree_view_get_reorderable:
12494  * @tree_view: a #GtkTreeView
12495  *
12496  * Retrieves whether the user can reorder the tree via drag-and-drop. See
12497  * gtk_tree_view_set_reorderable().
12498  *
12499  * Return value: %TRUE if the tree can be reordered.
12500  **/
12501 gboolean
12502 gtk_tree_view_get_reorderable (GtkTreeView *tree_view)
12503 {
12504   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), FALSE);
12505
12506   return tree_view->priv->reorderable;
12507 }
12508
12509 /**
12510  * gtk_tree_view_set_reorderable:
12511  * @tree_view: A #GtkTreeView.
12512  * @reorderable: %TRUE, if the tree can be reordered.
12513  *
12514  * This function is a convenience function to allow you to reorder
12515  * models that support the #GtkDragSourceIface and the
12516  * #GtkDragDestIface.  Both #GtkTreeStore and #GtkListStore support
12517  * these.  If @reorderable is %TRUE, then the user can reorder the
12518  * model by dragging and dropping rows. The developer can listen to
12519  * these changes by connecting to the model's row_inserted and
12520  * row_deleted signals. The reordering is implemented by setting up
12521  * the tree view as a drag source and destination. Therefore, drag and
12522  * drop can not be used in a reorderable view for any other purpose.
12523  *
12524  * This function does not give you any degree of control over the order -- any
12525  * reordering is allowed.  If more control is needed, you should probably
12526  * handle drag and drop manually.
12527  **/
12528 void
12529 gtk_tree_view_set_reorderable (GtkTreeView *tree_view,
12530                                gboolean     reorderable)
12531 {
12532   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
12533
12534   reorderable = reorderable != FALSE;
12535
12536   if (tree_view->priv->reorderable == reorderable)
12537     return;
12538
12539   if (reorderable)
12540     {
12541       const GtkTargetEntry row_targets[] = {
12542         { "GTK_TREE_MODEL_ROW", GTK_TARGET_SAME_WIDGET, 0 }
12543       };
12544
12545       gtk_tree_view_enable_model_drag_source (tree_view,
12546                                               GDK_BUTTON1_MASK,
12547                                               row_targets,
12548                                               G_N_ELEMENTS (row_targets),
12549                                               GDK_ACTION_MOVE);
12550       gtk_tree_view_enable_model_drag_dest (tree_view,
12551                                             row_targets,
12552                                             G_N_ELEMENTS (row_targets),
12553                                             GDK_ACTION_MOVE);
12554     }
12555   else
12556     {
12557       gtk_tree_view_unset_rows_drag_source (tree_view);
12558       gtk_tree_view_unset_rows_drag_dest (tree_view);
12559     }
12560
12561   tree_view->priv->reorderable = reorderable;
12562
12563   g_object_notify (G_OBJECT (tree_view), "reorderable");
12564 }
12565
12566 static void
12567 gtk_tree_view_real_set_cursor (GtkTreeView     *tree_view,
12568                                GtkTreePath     *path,
12569                                gboolean         clear_and_select,
12570                                gboolean         clamp_node)
12571 {
12572   GtkRBTree *tree = NULL;
12573   GtkRBNode *node = NULL;
12574
12575   if (gtk_tree_row_reference_valid (tree_view->priv->cursor))
12576     {
12577       GtkTreePath *cursor_path;
12578       cursor_path = gtk_tree_row_reference_get_path (tree_view->priv->cursor);
12579       gtk_tree_view_queue_draw_path (tree_view, cursor_path, NULL);
12580       gtk_tree_path_free (cursor_path);
12581     }
12582
12583   gtk_tree_row_reference_free (tree_view->priv->cursor);
12584   tree_view->priv->cursor = NULL;
12585
12586   /* One cannot set the cursor on a separator.   Also, if
12587    * _gtk_tree_view_find_node returns TRUE, it ran out of tree
12588    * before finding the tree and node belonging to path.  The
12589    * path maps to a non-existing path and we will silently bail out.
12590    * We unset tree and node to avoid further processing.
12591    */
12592   if (!row_is_separator (tree_view, NULL, path)
12593       && _gtk_tree_view_find_node (tree_view, path, &tree, &node) == FALSE)
12594     {
12595       tree_view->priv->cursor =
12596           gtk_tree_row_reference_new_proxy (G_OBJECT (tree_view),
12597                                             tree_view->priv->model,
12598                                             path);
12599     }
12600   else
12601     {
12602       tree = NULL;
12603       node = NULL;
12604     }
12605
12606   if (tree != NULL)
12607     {
12608       GtkRBTree *new_tree = NULL;
12609       GtkRBNode *new_node = NULL;
12610
12611       if (clear_and_select && !tree_view->priv->ctrl_pressed)
12612         {
12613           GtkTreeSelectMode mode = 0;
12614
12615           if (tree_view->priv->ctrl_pressed)
12616             mode |= GTK_TREE_SELECT_MODE_TOGGLE;
12617           if (tree_view->priv->shift_pressed)
12618             mode |= GTK_TREE_SELECT_MODE_EXTEND;
12619
12620           _gtk_tree_selection_internal_select_node (tree_view->priv->selection,
12621                                                     node, tree, path, mode,
12622                                                     FALSE);
12623         }
12624
12625       /* We have to re-find tree and node here again, somebody might have
12626        * cleared the node or the whole tree in the GtkTreeSelection::changed
12627        * callback. If the nodes differ we bail out here.
12628        */
12629       _gtk_tree_view_find_node (tree_view, path, &new_tree, &new_node);
12630
12631       if (tree != new_tree || node != new_node)
12632         return;
12633
12634       if (clamp_node)
12635         {
12636           gtk_tree_view_clamp_node_visible (tree_view, tree, node);
12637           _gtk_tree_view_queue_draw_node (tree_view, tree, node, NULL);
12638         }
12639     }
12640
12641   g_signal_emit (tree_view, tree_view_signals[CURSOR_CHANGED], 0);
12642 }
12643
12644 /**
12645  * gtk_tree_view_get_cursor:
12646  * @tree_view: A #GtkTreeView
12647  * @path: (out) (allow-none): A pointer to be filled with the current cursor path, or %NULL
12648  * @focus_column: (out) (allow-none): A pointer to be filled with the current focus column, or %NULL
12649  *
12650  * Fills in @path and @focus_column with the current path and focus column.  If
12651  * the cursor isn't currently set, then *@path will be %NULL.  If no column
12652  * currently has focus, then *@focus_column will be %NULL.
12653  *
12654  * The returned #GtkTreePath must be freed with gtk_tree_path_free() when
12655  * you are done with it.
12656  **/
12657 void
12658 gtk_tree_view_get_cursor (GtkTreeView        *tree_view,
12659                           GtkTreePath       **path,
12660                           GtkTreeViewColumn **focus_column)
12661 {
12662   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
12663
12664   if (path)
12665     {
12666       if (gtk_tree_row_reference_valid (tree_view->priv->cursor))
12667         *path = gtk_tree_row_reference_get_path (tree_view->priv->cursor);
12668       else
12669         *path = NULL;
12670     }
12671
12672   if (focus_column)
12673     {
12674       *focus_column = tree_view->priv->focus_column;
12675     }
12676 }
12677
12678 /**
12679  * gtk_tree_view_set_cursor:
12680  * @tree_view: A #GtkTreeView
12681  * @path: A #GtkTreePath
12682  * @focus_column: (allow-none): A #GtkTreeViewColumn, or %NULL
12683  * @start_editing: %TRUE if the specified cell should start being edited.
12684  *
12685  * Sets the current keyboard focus to be at @path, and selects it.  This is
12686  * useful when you want to focus the user's attention on a particular row.  If
12687  * @focus_column is not %NULL, then focus is given to the column specified by
12688  * it. Additionally, if @focus_column is specified, and @start_editing is
12689  * %TRUE, then editing should be started in the specified cell.
12690  * This function is often followed by @gtk_widget_grab_focus (@tree_view)
12691  * in order to give keyboard focus to the widget.  Please note that editing
12692  * can only happen when the widget is realized.
12693  *
12694  * If @path is invalid for @model, the current cursor (if any) will be unset
12695  * and the function will return without failing.
12696  **/
12697 void
12698 gtk_tree_view_set_cursor (GtkTreeView       *tree_view,
12699                           GtkTreePath       *path,
12700                           GtkTreeViewColumn *focus_column,
12701                           gboolean           start_editing)
12702 {
12703   gtk_tree_view_set_cursor_on_cell (tree_view, path, focus_column,
12704                                     NULL, start_editing);
12705 }
12706
12707 /**
12708  * gtk_tree_view_set_cursor_on_cell:
12709  * @tree_view: A #GtkTreeView
12710  * @path: A #GtkTreePath
12711  * @focus_column: (allow-none): A #GtkTreeViewColumn, or %NULL
12712  * @focus_cell: (allow-none): A #GtkCellRenderer, or %NULL
12713  * @start_editing: %TRUE if the specified cell should start being edited.
12714  *
12715  * Sets the current keyboard focus to be at @path, and selects it.  This is
12716  * useful when you want to focus the user's attention on a particular row.  If
12717  * @focus_column is not %NULL, then focus is given to the column specified by
12718  * it. If @focus_column and @focus_cell are not %NULL, and @focus_column
12719  * contains 2 or more editable or activatable cells, then focus is given to
12720  * the cell specified by @focus_cell. Additionally, if @focus_column is
12721  * specified, and @start_editing is %TRUE, then editing should be started in
12722  * the specified cell.  This function is often followed by
12723  * @gtk_widget_grab_focus (@tree_view) in order to give keyboard focus to the
12724  * widget.  Please note that editing can only happen when the widget is
12725  * realized.
12726  *
12727  * If @path is invalid for @model, the current cursor (if any) will be unset
12728  * and the function will return without failing.
12729  *
12730  * Since: 2.2
12731  **/
12732 void
12733 gtk_tree_view_set_cursor_on_cell (GtkTreeView       *tree_view,
12734                                   GtkTreePath       *path,
12735                                   GtkTreeViewColumn *focus_column,
12736                                   GtkCellRenderer   *focus_cell,
12737                                   gboolean           start_editing)
12738 {
12739   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
12740   g_return_if_fail (path != NULL);
12741   g_return_if_fail (focus_column == NULL || GTK_IS_TREE_VIEW_COLUMN (focus_column));
12742
12743   if (!tree_view->priv->model)
12744     return;
12745
12746   if (focus_cell)
12747     {
12748       g_return_if_fail (focus_column);
12749       g_return_if_fail (GTK_IS_CELL_RENDERER (focus_cell));
12750     }
12751
12752   /* cancel the current editing, if it exists */
12753   if (tree_view->priv->edited_column &&
12754       tree_view->priv->edited_column->editable_widget)
12755     gtk_tree_view_stop_editing (tree_view, TRUE);
12756
12757   gtk_tree_view_real_set_cursor (tree_view, path, TRUE, TRUE);
12758
12759   if (focus_column && focus_column->visible)
12760     {
12761       GList *list;
12762       gboolean column_in_tree = FALSE;
12763
12764       for (list = tree_view->priv->columns; list; list = list->next)
12765         if (list->data == focus_column)
12766           {
12767             column_in_tree = TRUE;
12768             break;
12769           }
12770       g_return_if_fail (column_in_tree);
12771       tree_view->priv->focus_column = focus_column;
12772       if (focus_cell)
12773         gtk_tree_view_column_focus_cell (focus_column, focus_cell);
12774       if (start_editing)
12775         gtk_tree_view_start_editing (tree_view, path);
12776     }
12777 }
12778
12779 /**
12780  * gtk_tree_view_get_bin_window:
12781  * @tree_view: A #GtkTreeView
12782  *
12783  * Returns the window that @tree_view renders to.  This is used primarily to
12784  * compare to <literal>event->window</literal> to confirm that the event on
12785  * @tree_view is on the right window.
12786  *
12787  * Return value: A #GdkWindow, or %NULL when @tree_view hasn't been realized yet
12788  **/
12789 GdkWindow *
12790 gtk_tree_view_get_bin_window (GtkTreeView *tree_view)
12791 {
12792   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), NULL);
12793
12794   return tree_view->priv->bin_window;
12795 }
12796
12797 /**
12798  * gtk_tree_view_get_path_at_pos:
12799  * @tree_view: A #GtkTreeView.
12800  * @x: The x position to be identified (relative to bin_window).
12801  * @y: The y position to be identified (relative to bin_window).
12802  * @path: (out) (allow-none): A pointer to a #GtkTreePath pointer to be filled in, or %NULL
12803  * @column: (out) (allow-none): A pointer to a #GtkTreeViewColumn pointer to be filled in, or %NULL
12804  * @cell_x: (out) (allow-none): A pointer where the X coordinate relative to the cell can be placed, or %NULL
12805  * @cell_y: (out) (allow-none): A pointer where the Y coordinate relative to the cell can be placed, or %NULL
12806  *
12807  * Finds the path at the point (@x, @y), relative to bin_window coordinates
12808  * (please see gtk_tree_view_get_bin_window()).
12809  * That is, @x and @y are relative to an events coordinates. @x and @y must
12810  * come from an event on the @tree_view only where <literal>event->window ==
12811  * gtk_tree_view_get_bin_window (<!-- -->)</literal>. It is primarily for
12812  * things like popup menus. If @path is non-%NULL, then it will be filled
12813  * with the #GtkTreePath at that point.  This path should be freed with
12814  * gtk_tree_path_free().  If @column is non-%NULL, then it will be filled
12815  * with the column at that point.  @cell_x and @cell_y return the coordinates
12816  * relative to the cell background (i.e. the @background_area passed to
12817  * gtk_cell_renderer_render()).  This function is only meaningful if
12818  * @tree_view is realized.  Therefore this function will always return %FALSE
12819  * if @tree_view is not realized or does not have a model.
12820  *
12821  * For converting widget coordinates (eg. the ones you get from
12822  * GtkWidget::query-tooltip), please see
12823  * gtk_tree_view_convert_widget_to_bin_window_coords().
12824  *
12825  * Return value: %TRUE if a row exists at that coordinate.
12826  **/
12827 gboolean
12828 gtk_tree_view_get_path_at_pos (GtkTreeView        *tree_view,
12829                                gint                x,
12830                                gint                y,
12831                                GtkTreePath       **path,
12832                                GtkTreeViewColumn **column,
12833                                gint               *cell_x,
12834                                gint               *cell_y)
12835 {
12836   GtkRBTree *tree;
12837   GtkRBNode *node;
12838   gint y_offset;
12839
12840   g_return_val_if_fail (tree_view != NULL, FALSE);
12841
12842   if (path)
12843     *path = NULL;
12844   if (column)
12845     *column = NULL;
12846
12847   if (tree_view->priv->bin_window == NULL)
12848     return FALSE;
12849
12850   if (tree_view->priv->tree == NULL)
12851     return FALSE;
12852
12853   if (x > tree_view->priv->hadjustment->upper)
12854     return FALSE;
12855
12856   if (x < 0 || y < 0)
12857     return FALSE;
12858
12859   if (column || cell_x)
12860     {
12861       GtkTreeViewColumn *tmp_column;
12862       GtkTreeViewColumn *last_column = NULL;
12863       GList *list;
12864       gint remaining_x = x;
12865       gboolean found = FALSE;
12866       gboolean rtl;
12867
12868       rtl = (gtk_widget_get_direction (GTK_WIDGET (tree_view)) == GTK_TEXT_DIR_RTL);
12869       for (list = (rtl ? g_list_last (tree_view->priv->columns) : g_list_first (tree_view->priv->columns));
12870            list;
12871            list = (rtl ? list->prev : list->next))
12872         {
12873           tmp_column = list->data;
12874
12875           if (tmp_column->visible == FALSE)
12876             continue;
12877
12878           last_column = tmp_column;
12879           if (remaining_x <= tmp_column->width)
12880             {
12881               found = TRUE;
12882
12883               if (column)
12884                 *column = tmp_column;
12885
12886               if (cell_x)
12887                 *cell_x = remaining_x;
12888
12889               break;
12890             }
12891           remaining_x -= tmp_column->width;
12892         }
12893
12894       /* If found is FALSE and there is a last_column, then it the remainder
12895        * space is in that area
12896        */
12897       if (!found)
12898         {
12899           if (last_column)
12900             {
12901               if (column)
12902                 *column = last_column;
12903
12904               if (cell_x)
12905                 *cell_x = last_column->width + remaining_x;
12906             }
12907           else
12908             {
12909               return FALSE;
12910             }
12911         }
12912     }
12913
12914   y_offset = _gtk_rbtree_find_offset (tree_view->priv->tree,
12915                                       TREE_WINDOW_Y_TO_RBTREE_Y (tree_view, y),
12916                                       &tree, &node);
12917
12918   if (tree == NULL)
12919     return FALSE;
12920
12921   if (cell_y)
12922     *cell_y = y_offset;
12923
12924   if (path)
12925     *path = _gtk_tree_view_find_path (tree_view, tree, node);
12926
12927   return TRUE;
12928 }
12929
12930
12931 /**
12932  * gtk_tree_view_get_cell_area:
12933  * @tree_view: a #GtkTreeView
12934  * @path: (allow-none): a #GtkTreePath for the row, or %NULL to get only horizontal coordinates
12935  * @column: (allow-none): a #GtkTreeViewColumn for the column, or %NULL to get only vertical coordinates
12936  * @rect: rectangle to fill with cell rect
12937  *
12938  * Fills the bounding rectangle in bin_window coordinates for the cell at the
12939  * row specified by @path and the column specified by @column.  If @path is
12940  * %NULL, or points to a path not currently displayed, the @y and @height fields
12941  * of the rectangle will be filled with 0. If @column is %NULL, the @x and @width
12942  * fields will be filled with 0.  The sum of all cell rects does not cover the
12943  * entire tree; there are extra pixels in between rows, for example. The
12944  * returned rectangle is equivalent to the @cell_area passed to
12945  * gtk_cell_renderer_render().  This function is only valid if @tree_view is
12946  * realized.
12947  **/
12948 void
12949 gtk_tree_view_get_cell_area (GtkTreeView        *tree_view,
12950                              GtkTreePath        *path,
12951                              GtkTreeViewColumn  *column,
12952                              GdkRectangle       *rect)
12953 {
12954   GtkRBTree *tree = NULL;
12955   GtkRBNode *node = NULL;
12956   gint vertical_separator;
12957   gint horizontal_separator;
12958
12959   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
12960   g_return_if_fail (column == NULL || GTK_IS_TREE_VIEW_COLUMN (column));
12961   g_return_if_fail (rect != NULL);
12962   g_return_if_fail (!column || column->tree_view == (GtkWidget *) tree_view);
12963   g_return_if_fail (gtk_widget_get_realized (GTK_WIDGET (tree_view)));
12964
12965   gtk_widget_style_get (GTK_WIDGET (tree_view),
12966                         "vertical-separator", &vertical_separator,
12967                         "horizontal-separator", &horizontal_separator,
12968                         NULL);
12969
12970   rect->x = 0;
12971   rect->y = 0;
12972   rect->width = 0;
12973   rect->height = 0;
12974
12975   if (column)
12976     {
12977       rect->x = column->button->allocation.x + horizontal_separator/2;
12978       rect->width = column->button->allocation.width - horizontal_separator;
12979     }
12980
12981   if (path)
12982     {
12983       gboolean ret = _gtk_tree_view_find_node (tree_view, path, &tree, &node);
12984
12985       /* Get vertical coords */
12986       if ((!ret && tree == NULL) || ret)
12987         return;
12988
12989       rect->y = CELL_FIRST_PIXEL (tree_view, tree, node, vertical_separator);
12990       rect->height = MAX (CELL_HEIGHT (node, vertical_separator), tree_view->priv->expander_size - vertical_separator);
12991
12992       if (column &&
12993           gtk_tree_view_is_expander_column (tree_view, column))
12994         {
12995           gint depth = gtk_tree_path_get_depth (path);
12996           gboolean rtl;
12997
12998           rtl = gtk_widget_get_direction (GTK_WIDGET (tree_view)) == GTK_TEXT_DIR_RTL;
12999
13000           if (!rtl)
13001             rect->x += (depth - 1) * tree_view->priv->level_indentation;
13002           rect->width -= (depth - 1) * tree_view->priv->level_indentation;
13003
13004           if (TREE_VIEW_DRAW_EXPANDERS (tree_view))
13005             {
13006               if (!rtl)
13007                 rect->x += depth * tree_view->priv->expander_size;
13008               rect->width -= depth * tree_view->priv->expander_size;
13009             }
13010
13011           rect->width = MAX (rect->width, 0);
13012         }
13013     }
13014 }
13015
13016 /**
13017  * gtk_tree_view_get_background_area:
13018  * @tree_view: a #GtkTreeView
13019  * @path: (allow-none): a #GtkTreePath for the row, or %NULL to get only horizontal coordinates
13020  * @column: (allow-none): a #GtkTreeViewColumn for the column, or %NULL to get only vertical coordiantes
13021  * @rect: rectangle to fill with cell background rect
13022  *
13023  * Fills the bounding rectangle in bin_window coordinates for the cell at the
13024  * row specified by @path and the column specified by @column.  If @path is
13025  * %NULL, or points to a node not found in the tree, the @y and @height fields of
13026  * the rectangle will be filled with 0. If @column is %NULL, the @x and @width
13027  * fields will be filled with 0.  The returned rectangle is equivalent to the
13028  * @background_area passed to gtk_cell_renderer_render().  These background
13029  * areas tile to cover the entire bin window.  Contrast with the @cell_area,
13030  * returned by gtk_tree_view_get_cell_area(), which returns only the cell
13031  * itself, excluding surrounding borders and the tree expander area.
13032  *
13033  **/
13034 void
13035 gtk_tree_view_get_background_area (GtkTreeView        *tree_view,
13036                                    GtkTreePath        *path,
13037                                    GtkTreeViewColumn  *column,
13038                                    GdkRectangle       *rect)
13039 {
13040   GtkRBTree *tree = NULL;
13041   GtkRBNode *node = NULL;
13042
13043   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
13044   g_return_if_fail (column == NULL || GTK_IS_TREE_VIEW_COLUMN (column));
13045   g_return_if_fail (rect != NULL);
13046
13047   rect->x = 0;
13048   rect->y = 0;
13049   rect->width = 0;
13050   rect->height = 0;
13051
13052   if (path)
13053     {
13054       /* Get vertical coords */
13055
13056       if (!_gtk_tree_view_find_node (tree_view, path, &tree, &node) &&
13057           tree == NULL)
13058         return;
13059
13060       rect->y = BACKGROUND_FIRST_PIXEL (tree_view, tree, node);
13061
13062       rect->height = ROW_HEIGHT (tree_view, BACKGROUND_HEIGHT (node));
13063     }
13064
13065   if (column)
13066     {
13067       gint x2 = 0;
13068
13069       gtk_tree_view_get_background_xrange (tree_view, tree, column, &rect->x, &x2);
13070       rect->width = x2 - rect->x;
13071     }
13072 }
13073
13074 /**
13075  * gtk_tree_view_get_visible_rect:
13076  * @tree_view: a #GtkTreeView
13077  * @visible_rect: rectangle to fill
13078  *
13079  * Fills @visible_rect with the currently-visible region of the
13080  * buffer, in tree coordinates. Convert to bin_window coordinates with
13081  * gtk_tree_view_convert_tree_to_bin_window_coords().
13082  * Tree coordinates start at 0,0 for row 0 of the tree, and cover the entire
13083  * scrollable area of the tree.
13084  **/
13085 void
13086 gtk_tree_view_get_visible_rect (GtkTreeView  *tree_view,
13087                                 GdkRectangle *visible_rect)
13088 {
13089   GtkWidget *widget;
13090
13091   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
13092
13093   widget = GTK_WIDGET (tree_view);
13094
13095   if (visible_rect)
13096     {
13097       visible_rect->x = tree_view->priv->hadjustment->value;
13098       visible_rect->y = tree_view->priv->vadjustment->value;
13099       visible_rect->width = widget->allocation.width;
13100       visible_rect->height = widget->allocation.height - TREE_VIEW_HEADER_HEIGHT (tree_view);
13101     }
13102 }
13103
13104 /**
13105  * gtk_tree_view_convert_widget_to_tree_coords:
13106  * @tree_view: a #GtkTreeView
13107  * @wx: X coordinate relative to the widget
13108  * @wy: Y coordinate relative to the widget
13109  * @tx: return location for tree X coordinate
13110  * @ty: return location for tree Y coordinate
13111  *
13112  * Converts widget coordinates to coordinates for the
13113  * tree (the full scrollable area of the tree).
13114  *
13115  * Since: 2.12
13116  **/
13117 void
13118 gtk_tree_view_convert_widget_to_tree_coords (GtkTreeView *tree_view,
13119                                              gint         wx,
13120                                              gint         wy,
13121                                              gint        *tx,
13122                                              gint        *ty)
13123 {
13124   gint x, y;
13125
13126   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
13127
13128   gtk_tree_view_convert_widget_to_bin_window_coords (tree_view,
13129                                                      wx, wy,
13130                                                      &x, &y);
13131   gtk_tree_view_convert_bin_window_to_tree_coords (tree_view,
13132                                                    x, y,
13133                                                    tx, ty);
13134 }
13135
13136 /**
13137  * gtk_tree_view_convert_tree_to_widget_coords:
13138  * @tree_view: a #GtkTreeView
13139  * @tx: X coordinate relative to the tree
13140  * @ty: Y coordinate relative to the tree
13141  * @wx: return location for widget X coordinate
13142  * @wy: return location for widget Y coordinate
13143  *
13144  * Converts tree coordinates (coordinates in full scrollable area of the tree)
13145  * to widget coordinates.
13146  *
13147  * Since: 2.12
13148  **/
13149 void
13150 gtk_tree_view_convert_tree_to_widget_coords (GtkTreeView *tree_view,
13151                                              gint         tx,
13152                                              gint         ty,
13153                                              gint        *wx,
13154                                              gint        *wy)
13155 {
13156   gint x, y;
13157
13158   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
13159
13160   gtk_tree_view_convert_tree_to_bin_window_coords (tree_view,
13161                                                    tx, ty,
13162                                                    &x, &y);
13163   gtk_tree_view_convert_bin_window_to_widget_coords (tree_view,
13164                                                      x, y,
13165                                                      wx, wy);
13166 }
13167
13168 /**
13169  * gtk_tree_view_convert_widget_to_bin_window_coords:
13170  * @tree_view: a #GtkTreeView
13171  * @wx: X coordinate relative to the widget
13172  * @wy: Y coordinate relative to the widget
13173  * @bx: return location for bin_window X coordinate
13174  * @by: return location for bin_window Y coordinate
13175  *
13176  * Converts widget coordinates to coordinates for the bin_window
13177  * (see gtk_tree_view_get_bin_window()).
13178  *
13179  * Since: 2.12
13180  **/
13181 void
13182 gtk_tree_view_convert_widget_to_bin_window_coords (GtkTreeView *tree_view,
13183                                                    gint         wx,
13184                                                    gint         wy,
13185                                                    gint        *bx,
13186                                                    gint        *by)
13187 {
13188   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
13189
13190   if (bx)
13191     *bx = wx + tree_view->priv->hadjustment->value;
13192   if (by)
13193     *by = wy - TREE_VIEW_HEADER_HEIGHT (tree_view);
13194 }
13195
13196 /**
13197  * gtk_tree_view_convert_bin_window_to_widget_coords:
13198  * @tree_view: a #GtkTreeView
13199  * @bx: bin_window X coordinate
13200  * @by: bin_window Y coordinate
13201  * @wx: return location for widget X coordinate
13202  * @wy: return location for widget Y coordinate
13203  *
13204  * Converts bin_window coordinates (see gtk_tree_view_get_bin_window())
13205  * to widget relative coordinates.
13206  *
13207  * Since: 2.12
13208  **/
13209 void
13210 gtk_tree_view_convert_bin_window_to_widget_coords (GtkTreeView *tree_view,
13211                                                    gint         bx,
13212                                                    gint         by,
13213                                                    gint        *wx,
13214                                                    gint        *wy)
13215 {
13216   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
13217
13218   if (wx)
13219     *wx = bx - tree_view->priv->hadjustment->value;
13220   if (wy)
13221     *wy = by + TREE_VIEW_HEADER_HEIGHT (tree_view);
13222 }
13223
13224 /**
13225  * gtk_tree_view_convert_tree_to_bin_window_coords:
13226  * @tree_view: a #GtkTreeView
13227  * @tx: tree X coordinate
13228  * @ty: tree Y coordinate
13229  * @bx: return location for X coordinate relative to bin_window
13230  * @by: return location for Y coordinate relative to bin_window
13231  *
13232  * Converts tree coordinates (coordinates in full scrollable area of the tree)
13233  * to bin_window coordinates.
13234  *
13235  * Since: 2.12
13236  **/
13237 void
13238 gtk_tree_view_convert_tree_to_bin_window_coords (GtkTreeView *tree_view,
13239                                                  gint         tx,
13240                                                  gint         ty,
13241                                                  gint        *bx,
13242                                                  gint        *by)
13243 {
13244   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
13245
13246   if (bx)
13247     *bx = tx;
13248   if (by)
13249     *by = ty - tree_view->priv->dy;
13250 }
13251
13252 /**
13253  * gtk_tree_view_convert_bin_window_to_tree_coords:
13254  * @tree_view: a #GtkTreeView
13255  * @bx: X coordinate relative to bin_window
13256  * @by: Y coordinate relative to bin_window
13257  * @tx: return location for tree X coordinate
13258  * @ty: return location for tree Y coordinate
13259  *
13260  * Converts bin_window coordinates to coordinates for the
13261  * tree (the full scrollable area of the tree).
13262  *
13263  * Since: 2.12
13264  **/
13265 void
13266 gtk_tree_view_convert_bin_window_to_tree_coords (GtkTreeView *tree_view,
13267                                                  gint         bx,
13268                                                  gint         by,
13269                                                  gint        *tx,
13270                                                  gint        *ty)
13271 {
13272   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
13273
13274   if (tx)
13275     *tx = bx;
13276   if (ty)
13277     *ty = by + tree_view->priv->dy;
13278 }
13279
13280
13281
13282 /**
13283  * gtk_tree_view_get_visible_range:
13284  * @tree_view: A #GtkTreeView
13285  * @start_path: (allow-none): Return location for start of region, or %NULL.
13286  * @end_path: (allow-none): Return location for end of region, or %NULL.
13287  *
13288  * Sets @start_path and @end_path to be the first and last visible path.
13289  * Note that there may be invisible paths in between.
13290  *
13291  * The paths should be freed with gtk_tree_path_free() after use.
13292  *
13293  * Returns: %TRUE, if valid paths were placed in @start_path and @end_path.
13294  *
13295  * Since: 2.8
13296  **/
13297 gboolean
13298 gtk_tree_view_get_visible_range (GtkTreeView  *tree_view,
13299                                  GtkTreePath **start_path,
13300                                  GtkTreePath **end_path)
13301 {
13302   GtkRBTree *tree;
13303   GtkRBNode *node;
13304   gboolean retval;
13305
13306   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), FALSE);
13307
13308   if (!tree_view->priv->tree)
13309     return FALSE;
13310
13311   retval = TRUE;
13312
13313   if (start_path)
13314     {
13315       _gtk_rbtree_find_offset (tree_view->priv->tree,
13316                                TREE_WINDOW_Y_TO_RBTREE_Y (tree_view, 0),
13317                                &tree, &node);
13318       if (node)
13319         *start_path = _gtk_tree_view_find_path (tree_view, tree, node);
13320       else
13321         retval = FALSE;
13322     }
13323
13324   if (end_path)
13325     {
13326       gint y;
13327
13328       if (tree_view->priv->height < tree_view->priv->vadjustment->page_size)
13329         y = tree_view->priv->height - 1;
13330       else
13331         y = TREE_WINDOW_Y_TO_RBTREE_Y (tree_view, tree_view->priv->vadjustment->page_size) - 1;
13332
13333       _gtk_rbtree_find_offset (tree_view->priv->tree, y, &tree, &node);
13334       if (node)
13335         *end_path = _gtk_tree_view_find_path (tree_view, tree, node);
13336       else
13337         retval = FALSE;
13338     }
13339
13340   return retval;
13341 }
13342
13343 static void
13344 unset_reorderable (GtkTreeView *tree_view)
13345 {
13346   if (tree_view->priv->reorderable)
13347     {
13348       tree_view->priv->reorderable = FALSE;
13349       g_object_notify (G_OBJECT (tree_view), "reorderable");
13350     }
13351 }
13352
13353 /**
13354  * gtk_tree_view_enable_model_drag_source:
13355  * @tree_view: a #GtkTreeView
13356  * @start_button_mask: Mask of allowed buttons to start drag
13357  * @targets: the table of targets that the drag will support
13358  * @n_targets: the number of items in @targets
13359  * @actions: the bitmask of possible actions for a drag from this
13360  *    widget
13361  *
13362  * Turns @tree_view into a drag source for automatic DND. Calling this
13363  * method sets #GtkTreeView:reorderable to %FALSE.
13364  **/
13365 void
13366 gtk_tree_view_enable_model_drag_source (GtkTreeView              *tree_view,
13367                                         GdkModifierType           start_button_mask,
13368                                         const GtkTargetEntry     *targets,
13369                                         gint                      n_targets,
13370                                         GdkDragAction             actions)
13371 {
13372   TreeViewDragInfo *di;
13373
13374   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
13375
13376   gtk_drag_source_set (GTK_WIDGET (tree_view),
13377                        0,
13378                        targets,
13379                        n_targets,
13380                        actions);
13381
13382   di = ensure_info (tree_view);
13383
13384   di->start_button_mask = start_button_mask;
13385   di->source_actions = actions;
13386   di->source_set = TRUE;
13387
13388   unset_reorderable (tree_view);
13389 }
13390
13391 /**
13392  * gtk_tree_view_enable_model_drag_dest:
13393  * @tree_view: a #GtkTreeView
13394  * @targets: the table of targets that the drag will support
13395  * @n_targets: the number of items in @targets
13396  * @actions: the bitmask of possible actions for a drag from this
13397  *    widget
13398  *
13399  * Turns @tree_view into a drop destination for automatic DND. Calling
13400  * this method sets #GtkTreeView:reorderable to %FALSE.
13401  **/
13402 void
13403 gtk_tree_view_enable_model_drag_dest (GtkTreeView              *tree_view,
13404                                       const GtkTargetEntry     *targets,
13405                                       gint                      n_targets,
13406                                       GdkDragAction             actions)
13407 {
13408   TreeViewDragInfo *di;
13409
13410   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
13411
13412   gtk_drag_dest_set (GTK_WIDGET (tree_view),
13413                      0,
13414                      targets,
13415                      n_targets,
13416                      actions);
13417
13418   di = ensure_info (tree_view);
13419   di->dest_set = TRUE;
13420
13421   unset_reorderable (tree_view);
13422 }
13423
13424 /**
13425  * gtk_tree_view_unset_rows_drag_source:
13426  * @tree_view: a #GtkTreeView
13427  *
13428  * Undoes the effect of
13429  * gtk_tree_view_enable_model_drag_source(). Calling this method sets
13430  * #GtkTreeView:reorderable to %FALSE.
13431  **/
13432 void
13433 gtk_tree_view_unset_rows_drag_source (GtkTreeView *tree_view)
13434 {
13435   TreeViewDragInfo *di;
13436
13437   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
13438
13439   di = get_info (tree_view);
13440
13441   if (di)
13442     {
13443       if (di->source_set)
13444         {
13445           gtk_drag_source_unset (GTK_WIDGET (tree_view));
13446           di->source_set = FALSE;
13447         }
13448
13449       if (!di->dest_set && !di->source_set)
13450         remove_info (tree_view);
13451     }
13452
13453   unset_reorderable (tree_view);
13454 }
13455
13456 /**
13457  * gtk_tree_view_unset_rows_drag_dest:
13458  * @tree_view: a #GtkTreeView
13459  *
13460  * Undoes the effect of
13461  * gtk_tree_view_enable_model_drag_dest(). Calling this method sets
13462  * #GtkTreeView:reorderable to %FALSE.
13463  **/
13464 void
13465 gtk_tree_view_unset_rows_drag_dest (GtkTreeView *tree_view)
13466 {
13467   TreeViewDragInfo *di;
13468
13469   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
13470
13471   di = get_info (tree_view);
13472
13473   if (di)
13474     {
13475       if (di->dest_set)
13476         {
13477           gtk_drag_dest_unset (GTK_WIDGET (tree_view));
13478           di->dest_set = FALSE;
13479         }
13480
13481       if (!di->dest_set && !di->source_set)
13482         remove_info (tree_view);
13483     }
13484
13485   unset_reorderable (tree_view);
13486 }
13487
13488 /**
13489  * gtk_tree_view_set_drag_dest_row:
13490  * @tree_view: a #GtkTreeView
13491  * @path: (allow-none): The path of the row to highlight, or %NULL.
13492  * @pos: Specifies whether to drop before, after or into the row
13493  *
13494  * Sets the row that is highlighted for feedback.
13495  **/
13496 void
13497 gtk_tree_view_set_drag_dest_row (GtkTreeView            *tree_view,
13498                                  GtkTreePath            *path,
13499                                  GtkTreeViewDropPosition pos)
13500 {
13501   GtkTreePath *current_dest;
13502
13503   /* Note; this function is exported to allow a custom DND
13504    * implementation, so it can't touch TreeViewDragInfo
13505    */
13506
13507   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
13508
13509   current_dest = NULL;
13510
13511   if (tree_view->priv->drag_dest_row)
13512     {
13513       current_dest = gtk_tree_row_reference_get_path (tree_view->priv->drag_dest_row);
13514       gtk_tree_row_reference_free (tree_view->priv->drag_dest_row);
13515     }
13516
13517   /* special case a drop on an empty model */
13518   tree_view->priv->empty_view_drop = 0;
13519
13520   if (pos == GTK_TREE_VIEW_DROP_BEFORE && path
13521       && gtk_tree_path_get_depth (path) == 1
13522       && gtk_tree_path_get_indices (path)[0] == 0)
13523     {
13524       gint n_children;
13525
13526       n_children = gtk_tree_model_iter_n_children (tree_view->priv->model,
13527                                                    NULL);
13528
13529       if (!n_children)
13530         tree_view->priv->empty_view_drop = 1;
13531     }
13532
13533   tree_view->priv->drag_dest_pos = pos;
13534
13535   if (path)
13536     {
13537       tree_view->priv->drag_dest_row =
13538         gtk_tree_row_reference_new_proxy (G_OBJECT (tree_view), tree_view->priv->model, path);
13539       gtk_tree_view_queue_draw_path (tree_view, path, NULL);
13540     }
13541   else
13542     tree_view->priv->drag_dest_row = NULL;
13543
13544   if (current_dest)
13545     {
13546       GtkRBTree *tree, *new_tree;
13547       GtkRBNode *node, *new_node;
13548
13549       _gtk_tree_view_find_node (tree_view, current_dest, &tree, &node);
13550       _gtk_tree_view_queue_draw_node (tree_view, tree, node, NULL);
13551
13552       if (tree && node)
13553         {
13554           _gtk_rbtree_next_full (tree, node, &new_tree, &new_node);
13555           if (new_tree && new_node)
13556             _gtk_tree_view_queue_draw_node (tree_view, new_tree, new_node, NULL);
13557
13558           _gtk_rbtree_prev_full (tree, node, &new_tree, &new_node);
13559           if (new_tree && new_node)
13560             _gtk_tree_view_queue_draw_node (tree_view, new_tree, new_node, NULL);
13561         }
13562       gtk_tree_path_free (current_dest);
13563     }
13564 }
13565
13566 /**
13567  * gtk_tree_view_get_drag_dest_row:
13568  * @tree_view: a #GtkTreeView
13569  * @path: (out) (allow-none): Return location for the path of the highlighted row, or %NULL.
13570  * @pos: (out) (allow-none): Return location for the drop position, or %NULL
13571  *
13572  * Gets information about the row that is highlighted for feedback.
13573  **/
13574 void
13575 gtk_tree_view_get_drag_dest_row (GtkTreeView              *tree_view,
13576                                  GtkTreePath             **path,
13577                                  GtkTreeViewDropPosition  *pos)
13578 {
13579   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
13580
13581   if (path)
13582     {
13583       if (tree_view->priv->drag_dest_row)
13584         *path = gtk_tree_row_reference_get_path (tree_view->priv->drag_dest_row);
13585       else
13586         {
13587           if (tree_view->priv->empty_view_drop)
13588             *path = gtk_tree_path_new_from_indices (0, -1);
13589           else
13590             *path = NULL;
13591         }
13592     }
13593
13594   if (pos)
13595     *pos = tree_view->priv->drag_dest_pos;
13596 }
13597
13598 /**
13599  * gtk_tree_view_get_dest_row_at_pos:
13600  * @tree_view: a #GtkTreeView
13601  * @drag_x: the position to determine the destination row for
13602  * @drag_y: the position to determine the destination row for
13603  * @path: (out) (allow-none): Return location for the path of the highlighted row, or %NULL.
13604  * @pos: (out) (allow-none): Return location for the drop position, or %NULL
13605  *
13606  * Determines the destination row for a given position.  @drag_x and
13607  * @drag_y are expected to be in widget coordinates.  This function is only
13608  * meaningful if @tree_view is realized.  Therefore this function will always
13609  * return %FALSE if @tree_view is not realized or does not have a model.
13610  *
13611  * Return value: whether there is a row at the given position, %TRUE if this
13612  * is indeed the case.
13613  **/
13614 gboolean
13615 gtk_tree_view_get_dest_row_at_pos (GtkTreeView             *tree_view,
13616                                    gint                     drag_x,
13617                                    gint                     drag_y,
13618                                    GtkTreePath            **path,
13619                                    GtkTreeViewDropPosition *pos)
13620 {
13621   gint cell_y;
13622   gint bin_x, bin_y;
13623   gdouble offset_into_row;
13624   gdouble third;
13625   GdkRectangle cell;
13626   GtkTreeViewColumn *column = NULL;
13627   GtkTreePath *tmp_path = NULL;
13628
13629   /* Note; this function is exported to allow a custom DND
13630    * implementation, so it can't touch TreeViewDragInfo
13631    */
13632
13633   g_return_val_if_fail (tree_view != NULL, FALSE);
13634   g_return_val_if_fail (drag_x >= 0, FALSE);
13635   g_return_val_if_fail (drag_y >= 0, FALSE);
13636
13637   if (path)
13638     *path = NULL;
13639
13640   if (tree_view->priv->bin_window == NULL)
13641     return FALSE;
13642
13643   if (tree_view->priv->tree == NULL)
13644     return FALSE;
13645
13646   /* If in the top third of a row, we drop before that row; if
13647    * in the bottom third, drop after that row; if in the middle,
13648    * and the row has children, drop into the row.
13649    */
13650   gtk_tree_view_convert_widget_to_bin_window_coords (tree_view, drag_x, drag_y,
13651                                                      &bin_x, &bin_y);
13652
13653   if (!gtk_tree_view_get_path_at_pos (tree_view,
13654                                       bin_x,
13655                                       bin_y,
13656                                       &tmp_path,
13657                                       &column,
13658                                       NULL,
13659                                       &cell_y))
13660     return FALSE;
13661
13662   gtk_tree_view_get_background_area (tree_view, tmp_path, column,
13663                                      &cell);
13664
13665   offset_into_row = cell_y;
13666
13667   if (path)
13668     *path = tmp_path;
13669   else
13670     gtk_tree_path_free (tmp_path);
13671
13672   tmp_path = NULL;
13673
13674   third = cell.height / 3.0;
13675
13676   if (pos)
13677     {
13678       if (offset_into_row < third)
13679         {
13680           *pos = GTK_TREE_VIEW_DROP_BEFORE;
13681         }
13682       else if (offset_into_row < (cell.height / 2.0))
13683         {
13684           *pos = GTK_TREE_VIEW_DROP_INTO_OR_BEFORE;
13685         }
13686       else if (offset_into_row < third * 2.0)
13687         {
13688           *pos = GTK_TREE_VIEW_DROP_INTO_OR_AFTER;
13689         }
13690       else
13691         {
13692           *pos = GTK_TREE_VIEW_DROP_AFTER;
13693         }
13694     }
13695
13696   return TRUE;
13697 }
13698
13699
13700
13701 /* KEEP IN SYNC WITH GTK_TREE_VIEW_BIN_EXPOSE */
13702 /**
13703  * gtk_tree_view_create_row_drag_icon:
13704  * @tree_view: a #GtkTreeView
13705  * @path: a #GtkTreePath in @tree_view
13706  *
13707  * Creates a #GdkPixmap representation of the row at @path.
13708  * This image is used for a drag icon.
13709  *
13710  * Return value: a newly-allocated pixmap of the drag icon.
13711  **/
13712 GdkPixmap *
13713 gtk_tree_view_create_row_drag_icon (GtkTreeView  *tree_view,
13714                                     GtkTreePath  *path)
13715 {
13716   GtkTreeIter   iter;
13717   GtkRBTree    *tree;
13718   GtkRBNode    *node;
13719   gint cell_offset;
13720   GList *list;
13721   GdkRectangle background_area;
13722   GdkRectangle expose_area;
13723   GtkWidget *widget;
13724   gint depth;
13725   /* start drawing inside the black outline */
13726   gint x = 1, y = 1;
13727   GdkDrawable *drawable;
13728   gint bin_window_width;
13729   gboolean is_separator = FALSE;
13730   gboolean rtl;
13731   cairo_t *cr;
13732
13733   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), NULL);
13734   g_return_val_if_fail (path != NULL, NULL);
13735
13736   widget = GTK_WIDGET (tree_view);
13737
13738   if (!gtk_widget_get_realized (widget))
13739     return NULL;
13740
13741   depth = gtk_tree_path_get_depth (path);
13742
13743   _gtk_tree_view_find_node (tree_view,
13744                             path,
13745                             &tree,
13746                             &node);
13747
13748   if (tree == NULL)
13749     return NULL;
13750
13751   if (!gtk_tree_model_get_iter (tree_view->priv->model,
13752                                 &iter,
13753                                 path))
13754     return NULL;
13755
13756   is_separator = row_is_separator (tree_view, &iter, NULL);
13757
13758   cell_offset = x;
13759
13760   background_area.y = y;
13761   background_area.height = ROW_HEIGHT (tree_view, BACKGROUND_HEIGHT (node));
13762
13763   gdk_drawable_get_size (tree_view->priv->bin_window,
13764                          &bin_window_width, NULL);
13765
13766   drawable = gdk_pixmap_new (tree_view->priv->bin_window,
13767                              bin_window_width + 2,
13768                              background_area.height + 2,
13769                              -1);
13770
13771   expose_area.x = 0;
13772   expose_area.y = 0;
13773   expose_area.width = bin_window_width + 2;
13774   expose_area.height = background_area.height + 2;
13775
13776   cr = gdk_cairo_create (drawable);
13777   gdk_cairo_set_source_color (cr, &widget->style->base [gtk_widget_get_state (widget)]);
13778   cairo_paint (cr);
13779
13780   rtl = gtk_widget_get_direction (GTK_WIDGET (tree_view)) == GTK_TEXT_DIR_RTL;
13781
13782   for (list = (rtl ? g_list_last (tree_view->priv->columns) : g_list_first (tree_view->priv->columns));
13783       list;
13784       list = (rtl ? list->prev : list->next))
13785     {
13786       GtkTreeViewColumn *column = list->data;
13787       GdkRectangle cell_area;
13788       gint vertical_separator;
13789
13790       if (!column->visible)
13791         continue;
13792
13793       gtk_tree_view_column_cell_set_cell_data (column, tree_view->priv->model, &iter,
13794                                                GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_PARENT),
13795                                                node->children?TRUE:FALSE);
13796
13797       background_area.x = cell_offset;
13798       background_area.width = column->width;
13799
13800       gtk_widget_style_get (widget,
13801                             "vertical-separator", &vertical_separator,
13802                             NULL);
13803
13804       cell_area = background_area;
13805
13806       cell_area.y += vertical_separator / 2;
13807       cell_area.height -= vertical_separator;
13808
13809       if (gtk_tree_view_is_expander_column (tree_view, column))
13810         {
13811           if (!rtl)
13812             cell_area.x += (depth - 1) * tree_view->priv->level_indentation;
13813           cell_area.width -= (depth - 1) * tree_view->priv->level_indentation;
13814
13815           if (TREE_VIEW_DRAW_EXPANDERS(tree_view))
13816             {
13817               if (!rtl)
13818                 cell_area.x += depth * tree_view->priv->expander_size;
13819               cell_area.width -= depth * tree_view->priv->expander_size;
13820             }
13821         }
13822
13823       if (gtk_tree_view_column_cell_is_visible (column))
13824         {
13825           if (is_separator)
13826             gtk_paint_hline (widget->style,
13827                              drawable,
13828                              GTK_STATE_NORMAL,
13829                              &cell_area,
13830                              widget,
13831                              NULL,
13832                              cell_area.x,
13833                              cell_area.x + cell_area.width,
13834                              cell_area.y + cell_area.height / 2);
13835           else
13836             _gtk_tree_view_column_cell_render (column,
13837                                                drawable,
13838                                                &background_area,
13839                                                &cell_area,
13840                                                &expose_area,
13841                                                0);
13842         }
13843       cell_offset += column->width;
13844     }
13845
13846   cairo_set_source_rgb (cr, 0, 0, 0);
13847   cairo_rectangle (cr,
13848                    0.5, 0.5,
13849                    bin_window_width + 1,
13850                    background_area.height + 1);
13851   cairo_set_line_width (cr, 1.0);
13852   cairo_stroke (cr);
13853
13854   cairo_destroy (cr);
13855
13856   return drawable;
13857 }
13858
13859
13860 /**
13861  * gtk_tree_view_set_destroy_count_func:
13862  * @tree_view: A #GtkTreeView
13863  * @func: (allow-none): Function to be called when a view row is destroyed, or %NULL
13864  * @data: (allow-none): User data to be passed to @func, or %NULL
13865  * @destroy: (allow-none): Destroy notifier for @data, or %NULL
13866  *
13867  * This function should almost never be used.  It is meant for private use by
13868  * ATK for determining the number of visible children that are removed when the
13869  * user collapses a row, or a row is deleted.
13870  **/
13871 void
13872 gtk_tree_view_set_destroy_count_func (GtkTreeView             *tree_view,
13873                                       GtkTreeDestroyCountFunc  func,
13874                                       gpointer                 data,
13875                                       GDestroyNotify           destroy)
13876 {
13877   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
13878
13879   if (tree_view->priv->destroy_count_destroy)
13880     tree_view->priv->destroy_count_destroy (tree_view->priv->destroy_count_data);
13881
13882   tree_view->priv->destroy_count_func = func;
13883   tree_view->priv->destroy_count_data = data;
13884   tree_view->priv->destroy_count_destroy = destroy;
13885 }
13886
13887
13888 /*
13889  * Interactive search
13890  */
13891
13892 /**
13893  * gtk_tree_view_set_enable_search:
13894  * @tree_view: A #GtkTreeView
13895  * @enable_search: %TRUE, if the user can search interactively
13896  *
13897  * If @enable_search is set, then the user can type in text to search through
13898  * the tree interactively (this is sometimes called "typeahead find").
13899  *
13900  * Note that even if this is %FALSE, the user can still initiate a search
13901  * using the "start-interactive-search" key binding.
13902  */
13903 void
13904 gtk_tree_view_set_enable_search (GtkTreeView *tree_view,
13905                                  gboolean     enable_search)
13906 {
13907   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
13908
13909   enable_search = !!enable_search;
13910
13911   if (tree_view->priv->enable_search != enable_search)
13912     {
13913        tree_view->priv->enable_search = enable_search;
13914        g_object_notify (G_OBJECT (tree_view), "enable-search");
13915     }
13916 }
13917
13918 /**
13919  * gtk_tree_view_get_enable_search:
13920  * @tree_view: A #GtkTreeView
13921  *
13922  * Returns whether or not the tree allows to start interactive searching
13923  * by typing in text.
13924  *
13925  * Return value: whether or not to let the user search interactively
13926  */
13927 gboolean
13928 gtk_tree_view_get_enable_search (GtkTreeView *tree_view)
13929 {
13930   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), FALSE);
13931
13932   return tree_view->priv->enable_search;
13933 }
13934
13935
13936 /**
13937  * gtk_tree_view_get_search_column:
13938  * @tree_view: A #GtkTreeView
13939  *
13940  * Gets the column searched on by the interactive search code.
13941  *
13942  * Return value: the column the interactive search code searches in.
13943  */
13944 gint
13945 gtk_tree_view_get_search_column (GtkTreeView *tree_view)
13946 {
13947   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), -1);
13948
13949   return (tree_view->priv->search_column);
13950 }
13951
13952 /**
13953  * gtk_tree_view_set_search_column:
13954  * @tree_view: A #GtkTreeView
13955  * @column: the column of the model to search in, or -1 to disable searching
13956  *
13957  * Sets @column as the column where the interactive search code should
13958  * search in for the current model.
13959  *
13960  * If the search column is set, users can use the "start-interactive-search"
13961  * key binding to bring up search popup. The enable-search property controls
13962  * whether simply typing text will also start an interactive search.
13963  *
13964  * Note that @column refers to a column of the current model. The search
13965  * column is reset to -1 when the model is changed.
13966  */
13967 void
13968 gtk_tree_view_set_search_column (GtkTreeView *tree_view,
13969                                  gint         column)
13970 {
13971   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
13972   g_return_if_fail (column >= -1);
13973
13974   if (tree_view->priv->search_column == column)
13975     return;
13976
13977   tree_view->priv->search_column = column;
13978   g_object_notify (G_OBJECT (tree_view), "search-column");
13979 }
13980
13981 /**
13982  * gtk_tree_view_get_search_equal_func:
13983  * @tree_view: A #GtkTreeView
13984  *
13985  * Returns the compare function currently in use.
13986  *
13987  * Return value: the currently used compare function for the search code.
13988  */
13989
13990 GtkTreeViewSearchEqualFunc
13991 gtk_tree_view_get_search_equal_func (GtkTreeView *tree_view)
13992 {
13993   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), NULL);
13994
13995   return tree_view->priv->search_equal_func;
13996 }
13997
13998 /**
13999  * gtk_tree_view_set_search_equal_func:
14000  * @tree_view: A #GtkTreeView
14001  * @search_equal_func: the compare function to use during the search
14002  * @search_user_data: (allow-none): user data to pass to @search_equal_func, or %NULL
14003  * @search_destroy: (allow-none): Destroy notifier for @search_user_data, or %NULL
14004  *
14005  * Sets the compare function for the interactive search capabilities; note
14006  * that somewhat like strcmp() returning 0 for equality
14007  * #GtkTreeViewSearchEqualFunc returns %FALSE on matches.
14008  **/
14009 void
14010 gtk_tree_view_set_search_equal_func (GtkTreeView                *tree_view,
14011                                      GtkTreeViewSearchEqualFunc  search_equal_func,
14012                                      gpointer                    search_user_data,
14013                                      GDestroyNotify              search_destroy)
14014 {
14015   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
14016   g_return_if_fail (search_equal_func != NULL);
14017
14018   if (tree_view->priv->search_destroy)
14019     tree_view->priv->search_destroy (tree_view->priv->search_user_data);
14020
14021   tree_view->priv->search_equal_func = search_equal_func;
14022   tree_view->priv->search_user_data = search_user_data;
14023   tree_view->priv->search_destroy = search_destroy;
14024   if (tree_view->priv->search_equal_func == NULL)
14025     tree_view->priv->search_equal_func = gtk_tree_view_search_equal_func;
14026 }
14027
14028 /**
14029  * gtk_tree_view_get_search_entry:
14030  * @tree_view: A #GtkTreeView
14031  *
14032  * Returns the #GtkEntry which is currently in use as interactive search
14033  * entry for @tree_view.  In case the built-in entry is being used, %NULL
14034  * will be returned.
14035  *
14036  * Return value: the entry currently in use as search entry.
14037  *
14038  * Since: 2.10
14039  */
14040 GtkEntry *
14041 gtk_tree_view_get_search_entry (GtkTreeView *tree_view)
14042 {
14043   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), NULL);
14044
14045   if (tree_view->priv->search_custom_entry_set)
14046     return GTK_ENTRY (tree_view->priv->search_entry);
14047
14048   return NULL;
14049 }
14050
14051 /**
14052  * gtk_tree_view_set_search_entry:
14053  * @tree_view: A #GtkTreeView
14054  * @entry: (allow-none): the entry the interactive search code of @tree_view should use or %NULL
14055  *
14056  * Sets the entry which the interactive search code will use for this
14057  * @tree_view.  This is useful when you want to provide a search entry
14058  * in our interface at all time at a fixed position.  Passing %NULL for
14059  * @entry will make the interactive search code use the built-in popup
14060  * entry again.
14061  *
14062  * Since: 2.10
14063  */
14064 void
14065 gtk_tree_view_set_search_entry (GtkTreeView *tree_view,
14066                                 GtkEntry    *entry)
14067 {
14068   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
14069   g_return_if_fail (entry == NULL || GTK_IS_ENTRY (entry));
14070
14071   if (tree_view->priv->search_custom_entry_set)
14072     {
14073       if (tree_view->priv->search_entry_changed_id)
14074         {
14075           g_signal_handler_disconnect (tree_view->priv->search_entry,
14076                                        tree_view->priv->search_entry_changed_id);
14077           tree_view->priv->search_entry_changed_id = 0;
14078         }
14079       g_signal_handlers_disconnect_by_func (tree_view->priv->search_entry,
14080                                             G_CALLBACK (gtk_tree_view_search_key_press_event),
14081                                             tree_view);
14082
14083       g_object_unref (tree_view->priv->search_entry);
14084     }
14085   else if (tree_view->priv->search_window)
14086     {
14087       gtk_widget_destroy (tree_view->priv->search_window);
14088
14089       tree_view->priv->search_window = NULL;
14090     }
14091
14092   if (entry)
14093     {
14094       tree_view->priv->search_entry = g_object_ref (entry);
14095       tree_view->priv->search_custom_entry_set = TRUE;
14096
14097       if (tree_view->priv->search_entry_changed_id == 0)
14098         {
14099           tree_view->priv->search_entry_changed_id =
14100             g_signal_connect (tree_view->priv->search_entry, "changed",
14101                               G_CALLBACK (gtk_tree_view_search_init),
14102                               tree_view);
14103         }
14104
14105         g_signal_connect (tree_view->priv->search_entry, "key-press-event",
14106                           G_CALLBACK (gtk_tree_view_search_key_press_event),
14107                           tree_view);
14108
14109         gtk_tree_view_search_init (tree_view->priv->search_entry, tree_view);
14110     }
14111   else
14112     {
14113       tree_view->priv->search_entry = NULL;
14114       tree_view->priv->search_custom_entry_set = FALSE;
14115     }
14116 }
14117
14118 /**
14119  * gtk_tree_view_set_search_position_func:
14120  * @tree_view: A #GtkTreeView
14121  * @func: (allow-none): the function to use to position the search dialog, or %NULL
14122  *    to use the default search position function
14123  * @data: (allow-none): user data to pass to @func, or %NULL
14124  * @destroy: (allow-none): Destroy notifier for @data, or %NULL
14125  *
14126  * Sets the function to use when positioning the search dialog.
14127  *
14128  * Since: 2.10
14129  **/
14130 void
14131 gtk_tree_view_set_search_position_func (GtkTreeView                   *tree_view,
14132                                         GtkTreeViewSearchPositionFunc  func,
14133                                         gpointer                       user_data,
14134                                         GDestroyNotify                 destroy)
14135 {
14136   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
14137
14138   if (tree_view->priv->search_position_destroy)
14139     tree_view->priv->search_position_destroy (tree_view->priv->search_position_user_data);
14140
14141   tree_view->priv->search_position_func = func;
14142   tree_view->priv->search_position_user_data = user_data;
14143   tree_view->priv->search_position_destroy = destroy;
14144   if (tree_view->priv->search_position_func == NULL)
14145     tree_view->priv->search_position_func = gtk_tree_view_search_position_func;
14146 }
14147
14148 /**
14149  * gtk_tree_view_get_search_position_func:
14150  * @tree_view: A #GtkTreeView
14151  *
14152  * Returns the positioning function currently in use.
14153  *
14154  * Return value: the currently used function for positioning the search dialog.
14155  *
14156  * Since: 2.10
14157  */
14158 GtkTreeViewSearchPositionFunc
14159 gtk_tree_view_get_search_position_func (GtkTreeView *tree_view)
14160 {
14161   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), NULL);
14162
14163   return tree_view->priv->search_position_func;
14164 }
14165
14166
14167 static void
14168 gtk_tree_view_search_dialog_hide (GtkWidget   *search_dialog,
14169                                   GtkTreeView *tree_view,
14170                                   GdkDevice   *device)
14171 {
14172   if (tree_view->priv->disable_popdown)
14173     return;
14174
14175   if (tree_view->priv->search_entry_changed_id)
14176     {
14177       g_signal_handler_disconnect (tree_view->priv->search_entry,
14178                                    tree_view->priv->search_entry_changed_id);
14179       tree_view->priv->search_entry_changed_id = 0;
14180     }
14181   if (tree_view->priv->typeselect_flush_timeout)
14182     {
14183       g_source_remove (tree_view->priv->typeselect_flush_timeout);
14184       tree_view->priv->typeselect_flush_timeout = 0;
14185     }
14186
14187   if (gtk_widget_get_visible (search_dialog))
14188     {
14189       /* send focus-in event */
14190       send_focus_change (GTK_WIDGET (tree_view->priv->search_entry), device, FALSE);
14191       gtk_widget_hide (search_dialog);
14192       gtk_entry_set_text (GTK_ENTRY (tree_view->priv->search_entry), "");
14193       send_focus_change (GTK_WIDGET (tree_view), device, TRUE);
14194     }
14195 }
14196
14197 static void
14198 gtk_tree_view_search_position_func (GtkTreeView *tree_view,
14199                                     GtkWidget   *search_dialog,
14200                                     gpointer     user_data)
14201 {
14202   gint x, y;
14203   gint tree_x, tree_y;
14204   gint tree_width, tree_height;
14205   GdkWindow *tree_window = GTK_WIDGET (tree_view)->window;
14206   GdkScreen *screen = gdk_drawable_get_screen (tree_window);
14207   GtkRequisition requisition;
14208   gint monitor_num;
14209   GdkRectangle monitor;
14210
14211   monitor_num = gdk_screen_get_monitor_at_window (screen, tree_window);
14212   gdk_screen_get_monitor_geometry (screen, monitor_num, &monitor);
14213
14214   gtk_widget_realize (search_dialog);
14215
14216   gdk_window_get_origin (tree_window, &tree_x, &tree_y);
14217   gdk_drawable_get_size (tree_window,
14218                          &tree_width,
14219                          &tree_height);
14220   gtk_widget_size_request (search_dialog, &requisition);
14221
14222   if (tree_x + tree_width > gdk_screen_get_width (screen))
14223     x = gdk_screen_get_width (screen) - requisition.width;
14224   else if (tree_x + tree_width - requisition.width < 0)
14225     x = 0;
14226   else
14227     x = tree_x + tree_width - requisition.width;
14228
14229   if (tree_y + tree_height + requisition.height > gdk_screen_get_height (screen))
14230     y = gdk_screen_get_height (screen) - requisition.height;
14231   else if (tree_y + tree_height < 0) /* isn't really possible ... */
14232     y = 0;
14233   else
14234     y = tree_y + tree_height;
14235
14236   gtk_window_move (GTK_WINDOW (search_dialog), x, y);
14237 }
14238
14239 static void
14240 gtk_tree_view_search_disable_popdown (GtkEntry *entry,
14241                                       GtkMenu  *menu,
14242                                       gpointer  data)
14243 {
14244   GtkTreeView *tree_view = (GtkTreeView *)data;
14245
14246   tree_view->priv->disable_popdown = 1;
14247   g_signal_connect (menu, "hide",
14248                     G_CALLBACK (gtk_tree_view_search_enable_popdown), data);
14249 }
14250
14251 /* Because we're visible but offscreen, we just set a flag in the preedit
14252  * callback.
14253  */
14254 static void
14255 gtk_tree_view_search_preedit_changed (GtkIMContext *im_context,
14256                                       GtkTreeView  *tree_view)
14257 {
14258   tree_view->priv->imcontext_changed = 1;
14259   if (tree_view->priv->typeselect_flush_timeout)
14260     {
14261       g_source_remove (tree_view->priv->typeselect_flush_timeout);
14262       tree_view->priv->typeselect_flush_timeout =
14263         gdk_threads_add_timeout (GTK_TREE_VIEW_SEARCH_DIALOG_TIMEOUT,
14264                        (GSourceFunc) gtk_tree_view_search_entry_flush_timeout,
14265                        tree_view);
14266     }
14267
14268 }
14269
14270 static void
14271 gtk_tree_view_search_activate (GtkEntry    *entry,
14272                                GtkTreeView *tree_view)
14273 {
14274   GtkTreePath *path;
14275   GtkRBNode *node;
14276   GtkRBTree *tree;
14277
14278   gtk_tree_view_search_dialog_hide (tree_view->priv->search_window,
14279                                     tree_view,
14280                                     gtk_get_current_event_device ());
14281
14282   /* If we have a row selected and it's the cursor row, we activate
14283    * the row XXX */
14284   if (gtk_tree_row_reference_valid (tree_view->priv->cursor))
14285     {
14286       path = gtk_tree_row_reference_get_path (tree_view->priv->cursor);
14287
14288       _gtk_tree_view_find_node (tree_view, path, &tree, &node);
14289
14290       if (node && GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_SELECTED))
14291         gtk_tree_view_row_activated (tree_view, path, tree_view->priv->focus_column);
14292
14293       gtk_tree_path_free (path);
14294     }
14295 }
14296
14297 static gboolean
14298 gtk_tree_view_real_search_enable_popdown (gpointer data)
14299 {
14300   GtkTreeView *tree_view = (GtkTreeView *)data;
14301
14302   tree_view->priv->disable_popdown = 0;
14303
14304   return FALSE;
14305 }
14306
14307 static void
14308 gtk_tree_view_search_enable_popdown (GtkWidget *widget,
14309                                      gpointer   data)
14310 {
14311   gdk_threads_add_timeout_full (G_PRIORITY_HIGH, 200, gtk_tree_view_real_search_enable_popdown, g_object_ref (data), g_object_unref);
14312 }
14313
14314 static gboolean
14315 gtk_tree_view_search_delete_event (GtkWidget *widget,
14316                                    GdkEventAny *event,
14317                                    GtkTreeView *tree_view)
14318 {
14319   g_return_val_if_fail (GTK_IS_WIDGET (widget), FALSE);
14320
14321   gtk_tree_view_search_dialog_hide (widget, tree_view, NULL);
14322
14323   return TRUE;
14324 }
14325
14326 static gboolean
14327 gtk_tree_view_search_button_press_event (GtkWidget *widget,
14328                                          GdkEventButton *event,
14329                                          GtkTreeView *tree_view)
14330 {
14331   GdkDevice *keyb_device;
14332
14333   g_return_val_if_fail (GTK_IS_WIDGET (widget), FALSE);
14334
14335   keyb_device = gdk_device_get_associated_device (event->device);
14336   gtk_tree_view_search_dialog_hide (widget, tree_view, keyb_device);
14337
14338   if (event->window == tree_view->priv->bin_window)
14339     gtk_tree_view_button_press (GTK_WIDGET (tree_view), event);
14340
14341   return TRUE;
14342 }
14343
14344 static gboolean
14345 gtk_tree_view_search_scroll_event (GtkWidget *widget,
14346                                    GdkEventScroll *event,
14347                                    GtkTreeView *tree_view)
14348 {
14349   gboolean retval = FALSE;
14350
14351   if (event->direction == GDK_SCROLL_UP)
14352     {
14353       gtk_tree_view_search_move (widget, tree_view, TRUE);
14354       retval = TRUE;
14355     }
14356   else if (event->direction == GDK_SCROLL_DOWN)
14357     {
14358       gtk_tree_view_search_move (widget, tree_view, FALSE);
14359       retval = TRUE;
14360     }
14361
14362   /* renew the flush timeout */
14363   if (retval && tree_view->priv->typeselect_flush_timeout
14364       && !tree_view->priv->search_custom_entry_set)
14365     {
14366       g_source_remove (tree_view->priv->typeselect_flush_timeout);
14367       tree_view->priv->typeselect_flush_timeout =
14368         gdk_threads_add_timeout (GTK_TREE_VIEW_SEARCH_DIALOG_TIMEOUT,
14369                        (GSourceFunc) gtk_tree_view_search_entry_flush_timeout,
14370                        tree_view);
14371     }
14372
14373   return retval;
14374 }
14375
14376 static gboolean
14377 gtk_tree_view_search_key_press_event (GtkWidget *widget,
14378                                       GdkEventKey *event,
14379                                       GtkTreeView *tree_view)
14380 {
14381   gboolean retval = FALSE;
14382
14383   g_return_val_if_fail (GTK_IS_WIDGET (widget), FALSE);
14384   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), FALSE);
14385
14386   /* close window and cancel the search */
14387   if (!tree_view->priv->search_custom_entry_set
14388       && (event->keyval == GDK_Escape ||
14389           event->keyval == GDK_Tab ||
14390             event->keyval == GDK_KP_Tab ||
14391             event->keyval == GDK_ISO_Left_Tab))
14392     {
14393       gtk_tree_view_search_dialog_hide (widget, tree_view,
14394                                         gdk_event_get_device ((GdkEvent *) event));
14395       return TRUE;
14396     }
14397
14398   /* select previous matching iter */
14399   if (event->keyval == GDK_Up || event->keyval == GDK_KP_Up)
14400     {
14401       if (!gtk_tree_view_search_move (widget, tree_view, TRUE))
14402         gtk_widget_error_bell (widget);
14403
14404       retval = TRUE;
14405     }
14406
14407   if (((event->state & (GTK_DEFAULT_ACCEL_MOD_MASK | GDK_SHIFT_MASK)) == (GTK_DEFAULT_ACCEL_MOD_MASK | GDK_SHIFT_MASK))
14408       && (event->keyval == GDK_g || event->keyval == GDK_G))
14409     {
14410       if (!gtk_tree_view_search_move (widget, tree_view, TRUE))
14411         gtk_widget_error_bell (widget);
14412
14413       retval = TRUE;
14414     }
14415
14416   /* select next matching iter */
14417   if (event->keyval == GDK_Down || event->keyval == GDK_KP_Down)
14418     {
14419       if (!gtk_tree_view_search_move (widget, tree_view, FALSE))
14420         gtk_widget_error_bell (widget);
14421
14422       retval = TRUE;
14423     }
14424
14425   if (((event->state & (GTK_DEFAULT_ACCEL_MOD_MASK | GDK_SHIFT_MASK)) == GTK_DEFAULT_ACCEL_MOD_MASK)
14426       && (event->keyval == GDK_g || event->keyval == GDK_G))
14427     {
14428       if (!gtk_tree_view_search_move (widget, tree_view, FALSE))
14429         gtk_widget_error_bell (widget);
14430
14431       retval = TRUE;
14432     }
14433
14434   /* renew the flush timeout */
14435   if (retval && tree_view->priv->typeselect_flush_timeout
14436       && !tree_view->priv->search_custom_entry_set)
14437     {
14438       g_source_remove (tree_view->priv->typeselect_flush_timeout);
14439       tree_view->priv->typeselect_flush_timeout =
14440         gdk_threads_add_timeout (GTK_TREE_VIEW_SEARCH_DIALOG_TIMEOUT,
14441                        (GSourceFunc) gtk_tree_view_search_entry_flush_timeout,
14442                        tree_view);
14443     }
14444
14445   return retval;
14446 }
14447
14448 /*  this function returns FALSE if there is a search string but
14449  *  nothing was found, and TRUE otherwise.
14450  */
14451 static gboolean
14452 gtk_tree_view_search_move (GtkWidget   *window,
14453                            GtkTreeView *tree_view,
14454                            gboolean     up)
14455 {
14456   gboolean ret;
14457   gint len;
14458   gint count = 0;
14459   const gchar *text;
14460   GtkTreeIter iter;
14461   GtkTreeModel *model;
14462   GtkTreeSelection *selection;
14463
14464   text = gtk_entry_get_text (GTK_ENTRY (tree_view->priv->search_entry));
14465
14466   g_return_val_if_fail (text != NULL, FALSE);
14467
14468   len = strlen (text);
14469
14470   if (up && tree_view->priv->selected_iter == 1)
14471     return strlen (text) < 1;
14472
14473   len = strlen (text);
14474
14475   if (len < 1)
14476     return TRUE;
14477
14478   model = gtk_tree_view_get_model (tree_view);
14479   selection = gtk_tree_view_get_selection (tree_view);
14480
14481   /* search */
14482   gtk_tree_selection_unselect_all (selection);
14483   if (!gtk_tree_model_get_iter_first (model, &iter))
14484     return TRUE;
14485
14486   ret = gtk_tree_view_search_iter (model, selection, &iter, text,
14487                                    &count, up?((tree_view->priv->selected_iter) - 1):((tree_view->priv->selected_iter + 1)));
14488
14489   if (ret)
14490     {
14491       /* found */
14492       tree_view->priv->selected_iter += up?(-1):(1);
14493       return TRUE;
14494     }
14495   else
14496     {
14497       /* return to old iter */
14498       count = 0;
14499       gtk_tree_model_get_iter_first (model, &iter);
14500       gtk_tree_view_search_iter (model, selection,
14501                                  &iter, text,
14502                                  &count, tree_view->priv->selected_iter);
14503       return FALSE;
14504     }
14505 }
14506
14507 static gboolean
14508 gtk_tree_view_search_equal_func (GtkTreeModel *model,
14509                                  gint          column,
14510                                  const gchar  *key,
14511                                  GtkTreeIter  *iter,
14512                                  gpointer      search_data)
14513 {
14514   gboolean retval = TRUE;
14515   const gchar *str;
14516   gchar *normalized_string;
14517   gchar *normalized_key;
14518   gchar *case_normalized_string = NULL;
14519   gchar *case_normalized_key = NULL;
14520   GValue value = {0,};
14521   GValue transformed = {0,};
14522
14523   gtk_tree_model_get_value (model, iter, column, &value);
14524
14525   g_value_init (&transformed, G_TYPE_STRING);
14526
14527   if (!g_value_transform (&value, &transformed))
14528     {
14529       g_value_unset (&value);
14530       return TRUE;
14531     }
14532
14533   g_value_unset (&value);
14534
14535   str = g_value_get_string (&transformed);
14536   if (!str)
14537     {
14538       g_value_unset (&transformed);
14539       return TRUE;
14540     }
14541
14542   normalized_string = g_utf8_normalize (str, -1, G_NORMALIZE_ALL);
14543   normalized_key = g_utf8_normalize (key, -1, G_NORMALIZE_ALL);
14544
14545   if (normalized_string && normalized_key)
14546     {
14547       case_normalized_string = g_utf8_casefold (normalized_string, -1);
14548       case_normalized_key = g_utf8_casefold (normalized_key, -1);
14549
14550       if (strncmp (case_normalized_key, case_normalized_string, strlen (case_normalized_key)) == 0)
14551         retval = FALSE;
14552     }
14553
14554   g_value_unset (&transformed);
14555   g_free (normalized_key);
14556   g_free (normalized_string);
14557   g_free (case_normalized_key);
14558   g_free (case_normalized_string);
14559
14560   return retval;
14561 }
14562
14563 static gboolean
14564 gtk_tree_view_search_iter (GtkTreeModel     *model,
14565                            GtkTreeSelection *selection,
14566                            GtkTreeIter      *iter,
14567                            const gchar      *text,
14568                            gint             *count,
14569                            gint              n)
14570 {
14571   GtkRBTree *tree = NULL;
14572   GtkRBNode *node = NULL;
14573   GtkTreePath *path;
14574
14575   GtkTreeView *tree_view = gtk_tree_selection_get_tree_view (selection);
14576
14577   path = gtk_tree_model_get_path (model, iter);
14578   _gtk_tree_view_find_node (tree_view, path, &tree, &node);
14579
14580   do
14581     {
14582       if (! tree_view->priv->search_equal_func (model, tree_view->priv->search_column, text, iter, tree_view->priv->search_user_data))
14583         {
14584           (*count)++;
14585           if (*count == n)
14586             {
14587               gtk_tree_view_scroll_to_cell (tree_view, path, NULL,
14588                                             TRUE, 0.5, 0.0);
14589               gtk_tree_selection_select_iter (selection, iter);
14590               gtk_tree_view_real_set_cursor (tree_view, path, FALSE, TRUE);
14591
14592               if (path)
14593                 gtk_tree_path_free (path);
14594
14595               return TRUE;
14596             }
14597         }
14598
14599       if (node->children)
14600         {
14601           gboolean has_child;
14602           GtkTreeIter tmp;
14603
14604           tree = node->children;
14605           node = tree->root;
14606
14607           while (node->left != tree->nil)
14608             node = node->left;
14609
14610           tmp = *iter;
14611           has_child = gtk_tree_model_iter_children (model, iter, &tmp);
14612           gtk_tree_path_down (path);
14613
14614           /* sanity check */
14615           TREE_VIEW_INTERNAL_ASSERT (has_child, FALSE);
14616         }
14617       else
14618         {
14619           gboolean done = FALSE;
14620
14621           do
14622             {
14623               node = _gtk_rbtree_next (tree, node);
14624
14625               if (node)
14626                 {
14627                   gboolean has_next;
14628
14629                   has_next = gtk_tree_model_iter_next (model, iter);
14630
14631                   done = TRUE;
14632                   gtk_tree_path_next (path);
14633
14634                   /* sanity check */
14635                   TREE_VIEW_INTERNAL_ASSERT (has_next, FALSE);
14636                 }
14637               else
14638                 {
14639                   gboolean has_parent;
14640                   GtkTreeIter tmp_iter = *iter;
14641
14642                   node = tree->parent_node;
14643                   tree = tree->parent_tree;
14644
14645                   if (!tree)
14646                     {
14647                       if (path)
14648                         gtk_tree_path_free (path);
14649
14650                       /* we've run out of tree, done with this func */
14651                       return FALSE;
14652                     }
14653
14654                   has_parent = gtk_tree_model_iter_parent (model,
14655                                                            iter,
14656                                                            &tmp_iter);
14657                   gtk_tree_path_up (path);
14658
14659                   /* sanity check */
14660                   TREE_VIEW_INTERNAL_ASSERT (has_parent, FALSE);
14661                 }
14662             }
14663           while (!done);
14664         }
14665     }
14666   while (1);
14667
14668   return FALSE;
14669 }
14670
14671 static void
14672 gtk_tree_view_search_init (GtkWidget   *entry,
14673                            GtkTreeView *tree_view)
14674 {
14675   gint ret;
14676   gint count = 0;
14677   const gchar *text;
14678   GtkTreeIter iter;
14679   GtkTreeModel *model;
14680   GtkTreeSelection *selection;
14681
14682   g_return_if_fail (GTK_IS_ENTRY (entry));
14683   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
14684
14685   text = gtk_entry_get_text (GTK_ENTRY (entry));
14686
14687   model = gtk_tree_view_get_model (tree_view);
14688   selection = gtk_tree_view_get_selection (tree_view);
14689
14690   /* search */
14691   gtk_tree_selection_unselect_all (selection);
14692   if (tree_view->priv->typeselect_flush_timeout
14693       && !tree_view->priv->search_custom_entry_set)
14694     {
14695       g_source_remove (tree_view->priv->typeselect_flush_timeout);
14696       tree_view->priv->typeselect_flush_timeout =
14697         gdk_threads_add_timeout (GTK_TREE_VIEW_SEARCH_DIALOG_TIMEOUT,
14698                        (GSourceFunc) gtk_tree_view_search_entry_flush_timeout,
14699                        tree_view);
14700     }
14701
14702   if (*text == '\0')
14703     return;
14704
14705   if (!gtk_tree_model_get_iter_first (model, &iter))
14706     return;
14707
14708   ret = gtk_tree_view_search_iter (model, selection,
14709                                    &iter, text,
14710                                    &count, 1);
14711
14712   if (ret)
14713     tree_view->priv->selected_iter = 1;
14714 }
14715
14716 static void
14717 gtk_tree_view_remove_widget (GtkCellEditable *cell_editable,
14718                              GtkTreeView     *tree_view)
14719 {
14720   if (tree_view->priv->edited_column == NULL)
14721     return;
14722
14723   _gtk_tree_view_column_stop_editing (tree_view->priv->edited_column);
14724   tree_view->priv->edited_column = NULL;
14725
14726   if (gtk_widget_has_focus (GTK_WIDGET (cell_editable)))
14727     gtk_widget_grab_focus (GTK_WIDGET (tree_view));
14728
14729   g_signal_handlers_disconnect_by_func (cell_editable,
14730                                         gtk_tree_view_remove_widget,
14731                                         tree_view);
14732
14733   gtk_container_remove (GTK_CONTAINER (tree_view),
14734                         GTK_WIDGET (cell_editable));
14735
14736   /* FIXME should only redraw a single node */
14737   gtk_widget_queue_draw (GTK_WIDGET (tree_view));
14738 }
14739
14740 static gboolean
14741 gtk_tree_view_start_editing (GtkTreeView *tree_view,
14742                              GtkTreePath *cursor_path)
14743 {
14744   GtkTreeIter iter;
14745   GdkRectangle background_area;
14746   GdkRectangle cell_area;
14747   GtkCellEditable *editable_widget = NULL;
14748   gchar *path_string;
14749   guint flags = 0; /* can be 0, as the flags are primarily for rendering */
14750   gint retval = FALSE;
14751   GtkRBTree *cursor_tree;
14752   GtkRBNode *cursor_node;
14753
14754   g_assert (tree_view->priv->focus_column);
14755
14756   if (!gtk_widget_get_realized (GTK_WIDGET (tree_view)))
14757     return FALSE;
14758
14759   if (_gtk_tree_view_find_node (tree_view, cursor_path, &cursor_tree, &cursor_node) ||
14760       cursor_node == NULL)
14761     return FALSE;
14762
14763   path_string = gtk_tree_path_to_string (cursor_path);
14764   gtk_tree_model_get_iter (tree_view->priv->model, &iter, cursor_path);
14765
14766   validate_row (tree_view, cursor_tree, cursor_node, &iter, cursor_path);
14767
14768   gtk_tree_view_column_cell_set_cell_data (tree_view->priv->focus_column,
14769                                            tree_view->priv->model,
14770                                            &iter,
14771                                            GTK_RBNODE_FLAG_SET (cursor_node, GTK_RBNODE_IS_PARENT),
14772                                            cursor_node->children?TRUE:FALSE);
14773   gtk_tree_view_get_background_area (tree_view,
14774                                      cursor_path,
14775                                      tree_view->priv->focus_column,
14776                                      &background_area);
14777   gtk_tree_view_get_cell_area (tree_view,
14778                                cursor_path,
14779                                tree_view->priv->focus_column,
14780                                &cell_area);
14781
14782   if (_gtk_tree_view_column_cell_event (tree_view->priv->focus_column,
14783                                         &editable_widget,
14784                                         NULL,
14785                                         path_string,
14786                                         &background_area,
14787                                         &cell_area,
14788                                         flags))
14789     {
14790       retval = TRUE;
14791       if (editable_widget != NULL)
14792         {
14793           gint left, right;
14794           GdkRectangle area;
14795           GtkCellRenderer *cell;
14796
14797           area = cell_area;
14798           cell = _gtk_tree_view_column_get_edited_cell (tree_view->priv->focus_column);
14799
14800           _gtk_tree_view_column_get_neighbor_sizes (tree_view->priv->focus_column, cell, &left, &right);
14801
14802           area.x += left;
14803           area.width -= right + left;
14804
14805           gtk_tree_view_real_start_editing (tree_view,
14806                                             tree_view->priv->focus_column,
14807                                             cursor_path,
14808                                             editable_widget,
14809                                             &area,
14810                                             NULL,
14811                                             flags);
14812         }
14813
14814     }
14815   g_free (path_string);
14816   return retval;
14817 }
14818
14819 static void
14820 gtk_tree_view_real_start_editing (GtkTreeView       *tree_view,
14821                                   GtkTreeViewColumn *column,
14822                                   GtkTreePath       *path,
14823                                   GtkCellEditable   *cell_editable,
14824                                   GdkRectangle      *cell_area,
14825                                   GdkEvent          *event,
14826                                   guint              flags)
14827 {
14828   gint pre_val = tree_view->priv->vadjustment->value;
14829   GtkRequisition requisition;
14830
14831   tree_view->priv->edited_column = column;
14832   _gtk_tree_view_column_start_editing (column, GTK_CELL_EDITABLE (cell_editable));
14833
14834   gtk_tree_view_real_set_cursor (tree_view, path, FALSE, TRUE);
14835   cell_area->y += pre_val - (int)tree_view->priv->vadjustment->value;
14836
14837   gtk_widget_size_request (GTK_WIDGET (cell_editable), &requisition);
14838
14839   GTK_TREE_VIEW_SET_FLAG (tree_view, GTK_TREE_VIEW_DRAW_KEYFOCUS);
14840
14841   if (requisition.height < cell_area->height)
14842     {
14843       gint diff = cell_area->height - requisition.height;
14844       gtk_tree_view_put (tree_view,
14845                          GTK_WIDGET (cell_editable),
14846                          cell_area->x, cell_area->y + diff/2,
14847                          cell_area->width, requisition.height);
14848     }
14849   else
14850     {
14851       gtk_tree_view_put (tree_view,
14852                          GTK_WIDGET (cell_editable),
14853                          cell_area->x, cell_area->y,
14854                          cell_area->width, cell_area->height);
14855     }
14856
14857   gtk_cell_editable_start_editing (GTK_CELL_EDITABLE (cell_editable),
14858                                    (GdkEvent *)event);
14859
14860   gtk_widget_grab_focus (GTK_WIDGET (cell_editable));
14861   g_signal_connect (cell_editable, "remove-widget",
14862                     G_CALLBACK (gtk_tree_view_remove_widget), tree_view);
14863 }
14864
14865 static void
14866 gtk_tree_view_stop_editing (GtkTreeView *tree_view,
14867                             gboolean     cancel_editing)
14868 {
14869   GtkTreeViewColumn *column;
14870   GtkCellRenderer *cell;
14871
14872   if (tree_view->priv->edited_column == NULL)
14873     return;
14874
14875   /*
14876    * This is very evil. We need to do this, because
14877    * gtk_cell_editable_editing_done may trigger gtk_tree_view_row_changed
14878    * later on. If gtk_tree_view_row_changed notices
14879    * tree_view->priv->edited_column != NULL, it'll call
14880    * gtk_tree_view_stop_editing again. Bad things will happen then.
14881    *
14882    * Please read that again if you intend to modify anything here.
14883    */
14884
14885   column = tree_view->priv->edited_column;
14886   tree_view->priv->edited_column = NULL;
14887
14888   cell = _gtk_tree_view_column_get_edited_cell (column);
14889   gtk_cell_renderer_stop_editing (cell, cancel_editing);
14890
14891   if (!cancel_editing)
14892     gtk_cell_editable_editing_done (column->editable_widget);
14893
14894   tree_view->priv->edited_column = column;
14895
14896   gtk_cell_editable_remove_widget (column->editable_widget);
14897 }
14898
14899
14900 /**
14901  * gtk_tree_view_set_hover_selection:
14902  * @tree_view: a #GtkTreeView
14903  * @hover: %TRUE to enable hover selection mode
14904  *
14905  * Enables of disables the hover selection mode of @tree_view.
14906  * Hover selection makes the selected row follow the pointer.
14907  * Currently, this works only for the selection modes
14908  * %GTK_SELECTION_SINGLE and %GTK_SELECTION_BROWSE.
14909  *
14910  * Since: 2.6
14911  **/
14912 void
14913 gtk_tree_view_set_hover_selection (GtkTreeView *tree_view,
14914                                    gboolean     hover)
14915 {
14916   hover = hover != FALSE;
14917
14918   if (hover != tree_view->priv->hover_selection)
14919     {
14920       tree_view->priv->hover_selection = hover;
14921
14922       g_object_notify (G_OBJECT (tree_view), "hover-selection");
14923     }
14924 }
14925
14926 /**
14927  * gtk_tree_view_get_hover_selection:
14928  * @tree_view: a #GtkTreeView
14929  *
14930  * Returns whether hover selection mode is turned on for @tree_view.
14931  *
14932  * Return value: %TRUE if @tree_view is in hover selection mode
14933  *
14934  * Since: 2.6
14935  **/
14936 gboolean
14937 gtk_tree_view_get_hover_selection (GtkTreeView *tree_view)
14938 {
14939   return tree_view->priv->hover_selection;
14940 }
14941
14942 /**
14943  * gtk_tree_view_set_hover_expand:
14944  * @tree_view: a #GtkTreeView
14945  * @expand: %TRUE to enable hover selection mode
14946  *
14947  * Enables of disables the hover expansion mode of @tree_view.
14948  * Hover expansion makes rows expand or collapse if the pointer
14949  * moves over them.
14950  *
14951  * Since: 2.6
14952  **/
14953 void
14954 gtk_tree_view_set_hover_expand (GtkTreeView *tree_view,
14955                                 gboolean     expand)
14956 {
14957   expand = expand != FALSE;
14958
14959   if (expand != tree_view->priv->hover_expand)
14960     {
14961       tree_view->priv->hover_expand = expand;
14962
14963       g_object_notify (G_OBJECT (tree_view), "hover-expand");
14964     }
14965 }
14966
14967 /**
14968  * gtk_tree_view_get_hover_expand:
14969  * @tree_view: a #GtkTreeView
14970  *
14971  * Returns whether hover expansion mode is turned on for @tree_view.
14972  *
14973  * Return value: %TRUE if @tree_view is in hover expansion mode
14974  *
14975  * Since: 2.6
14976  **/
14977 gboolean
14978 gtk_tree_view_get_hover_expand (GtkTreeView *tree_view)
14979 {
14980   return tree_view->priv->hover_expand;
14981 }
14982
14983 /**
14984  * gtk_tree_view_set_rubber_banding:
14985  * @tree_view: a #GtkTreeView
14986  * @enable: %TRUE to enable rubber banding
14987  *
14988  * Enables or disables rubber banding in @tree_view.  If the selection mode
14989  * is #GTK_SELECTION_MULTIPLE, rubber banding will allow the user to select
14990  * multiple rows by dragging the mouse.
14991  *
14992  * Since: 2.10
14993  **/
14994 void
14995 gtk_tree_view_set_rubber_banding (GtkTreeView *tree_view,
14996                                   gboolean     enable)
14997 {
14998   enable = enable != FALSE;
14999
15000   if (enable != tree_view->priv->rubber_banding_enable)
15001     {
15002       tree_view->priv->rubber_banding_enable = enable;
15003
15004       g_object_notify (G_OBJECT (tree_view), "rubber-banding");
15005     }
15006 }
15007
15008 /**
15009  * gtk_tree_view_get_rubber_banding:
15010  * @tree_view: a #GtkTreeView
15011  *
15012  * Returns whether rubber banding is turned on for @tree_view.  If the
15013  * selection mode is #GTK_SELECTION_MULTIPLE, rubber banding will allow the
15014  * user to select multiple rows by dragging the mouse.
15015  *
15016  * Return value: %TRUE if rubber banding in @tree_view is enabled.
15017  *
15018  * Since: 2.10
15019  **/
15020 gboolean
15021 gtk_tree_view_get_rubber_banding (GtkTreeView *tree_view)
15022 {
15023   return tree_view->priv->rubber_banding_enable;
15024 }
15025
15026 /**
15027  * gtk_tree_view_is_rubber_banding_active:
15028  * @tree_view: a #GtkTreeView
15029  *
15030  * Returns whether a rubber banding operation is currently being done
15031  * in @tree_view.
15032  *
15033  * Return value: %TRUE if a rubber banding operation is currently being
15034  * done in @tree_view.
15035  *
15036  * Since: 2.12
15037  **/
15038 gboolean
15039 gtk_tree_view_is_rubber_banding_active (GtkTreeView *tree_view)
15040 {
15041   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), FALSE);
15042
15043   if (tree_view->priv->rubber_banding_enable
15044       && tree_view->priv->rubber_band_status == RUBBER_BAND_ACTIVE)
15045     return TRUE;
15046
15047   return FALSE;
15048 }
15049
15050 /**
15051  * gtk_tree_view_get_row_separator_func:
15052  * @tree_view: a #GtkTreeView
15053  *
15054  * Returns the current row separator function.
15055  *
15056  * Return value: the current row separator function.
15057  *
15058  * Since: 2.6
15059  **/
15060 GtkTreeViewRowSeparatorFunc
15061 gtk_tree_view_get_row_separator_func (GtkTreeView *tree_view)
15062 {
15063   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), NULL);
15064
15065   return tree_view->priv->row_separator_func;
15066 }
15067
15068 /**
15069  * gtk_tree_view_set_row_separator_func:
15070  * @tree_view: a #GtkTreeView
15071  * @func: a #GtkTreeViewRowSeparatorFunc
15072  * @data: (allow-none): user data to pass to @func, or %NULL
15073  * @destroy: (allow-none): destroy notifier for @data, or %NULL
15074  *
15075  * Sets the row separator function, which is used to determine
15076  * whether a row should be drawn as a separator. If the row separator
15077  * function is %NULL, no separators are drawn. This is the default value.
15078  *
15079  * Since: 2.6
15080  **/
15081 void
15082 gtk_tree_view_set_row_separator_func (GtkTreeView                 *tree_view,
15083                                       GtkTreeViewRowSeparatorFunc  func,
15084                                       gpointer                     data,
15085                                       GDestroyNotify               destroy)
15086 {
15087   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
15088
15089   if (tree_view->priv->row_separator_destroy)
15090     tree_view->priv->row_separator_destroy (tree_view->priv->row_separator_data);
15091
15092   tree_view->priv->row_separator_func = func;
15093   tree_view->priv->row_separator_data = data;
15094   tree_view->priv->row_separator_destroy = destroy;
15095
15096   /* Have the tree recalculate heights */
15097   _gtk_rbtree_mark_invalid (tree_view->priv->tree);
15098   gtk_widget_queue_resize (GTK_WIDGET (tree_view));
15099 }
15100
15101
15102 static void
15103 gtk_tree_view_grab_notify (GtkWidget *widget,
15104                            gboolean   was_grabbed)
15105 {
15106   GtkTreeView *tree_view = GTK_TREE_VIEW (widget);
15107
15108   tree_view->priv->in_grab = !was_grabbed;
15109
15110   if (!was_grabbed)
15111     {
15112       tree_view->priv->pressed_button = -1;
15113
15114       if (tree_view->priv->rubber_band_status)
15115         gtk_tree_view_stop_rubber_band (tree_view);
15116     }
15117 }
15118
15119 static void
15120 gtk_tree_view_state_changed (GtkWidget      *widget,
15121                              GtkStateType    previous_state)
15122 {
15123   GtkTreeView *tree_view = GTK_TREE_VIEW (widget);
15124
15125   if (gtk_widget_get_realized (widget))
15126     {
15127       gdk_window_set_back_pixmap (widget->window, NULL, FALSE);
15128       gdk_window_set_background (tree_view->priv->bin_window, &widget->style->base[widget->state]);
15129     }
15130
15131   gtk_widget_queue_draw (widget);
15132 }
15133
15134 /**
15135  * gtk_tree_view_get_grid_lines:
15136  * @tree_view: a #GtkTreeView
15137  *
15138  * Returns which grid lines are enabled in @tree_view.
15139  *
15140  * Return value: a #GtkTreeViewGridLines value indicating which grid lines
15141  * are enabled.
15142  *
15143  * Since: 2.10
15144  */
15145 GtkTreeViewGridLines
15146 gtk_tree_view_get_grid_lines (GtkTreeView *tree_view)
15147 {
15148   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), 0);
15149
15150   return tree_view->priv->grid_lines;
15151 }
15152
15153 /**
15154  * gtk_tree_view_set_grid_lines:
15155  * @tree_view: a #GtkTreeView
15156  * @grid_lines: a #GtkTreeViewGridLines value indicating which grid lines to
15157  * enable.
15158  *
15159  * Sets which grid lines to draw in @tree_view.
15160  *
15161  * Since: 2.10
15162  */
15163 void
15164 gtk_tree_view_set_grid_lines (GtkTreeView           *tree_view,
15165                               GtkTreeViewGridLines   grid_lines)
15166 {
15167   GtkTreeViewPrivate *priv;
15168   GtkWidget *widget;
15169   GtkTreeViewGridLines old_grid_lines;
15170
15171   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
15172
15173   priv = tree_view->priv;
15174   widget = GTK_WIDGET (tree_view);
15175
15176   old_grid_lines = priv->grid_lines;
15177   priv->grid_lines = grid_lines;
15178
15179   if (gtk_widget_get_realized (widget))
15180     {
15181       if (grid_lines == GTK_TREE_VIEW_GRID_LINES_NONE &&
15182           priv->grid_line_width)
15183         {
15184           priv->grid_line_width = 0;
15185         }
15186
15187       if (grid_lines != GTK_TREE_VIEW_GRID_LINES_NONE &&
15188           !priv->grid_line_width)
15189         {
15190           gint8 *dash_list;
15191
15192           gtk_widget_style_get (widget,
15193                                 "grid-line-width", &priv->grid_line_width,
15194                                 "grid-line-pattern", (gchar *)&dash_list,
15195                                 NULL);
15196
15197           if (dash_list)
15198             {
15199               priv->grid_line_dashes[0] = dash_list[0];
15200               if (dash_list[0])
15201                 priv->grid_line_dashes[1] = dash_list[1];
15202
15203               g_free (dash_list);
15204             }
15205           else
15206             {
15207               priv->grid_line_dashes[0] = 1;
15208               priv->grid_line_dashes[1] = 1;
15209             }
15210         }
15211     }
15212
15213   if (old_grid_lines != grid_lines)
15214     {
15215       gtk_widget_queue_draw (GTK_WIDGET (tree_view));
15216
15217       g_object_notify (G_OBJECT (tree_view), "enable-grid-lines");
15218     }
15219 }
15220
15221 /**
15222  * gtk_tree_view_get_enable_tree_lines:
15223  * @tree_view: a #GtkTreeView.
15224  *
15225  * Returns whether or not tree lines are drawn in @tree_view.
15226  *
15227  * Return value: %TRUE if tree lines are drawn in @tree_view, %FALSE
15228  * otherwise.
15229  *
15230  * Since: 2.10
15231  */
15232 gboolean
15233 gtk_tree_view_get_enable_tree_lines (GtkTreeView *tree_view)
15234 {
15235   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), FALSE);
15236
15237   return tree_view->priv->tree_lines_enabled;
15238 }
15239
15240 /**
15241  * gtk_tree_view_set_enable_tree_lines:
15242  * @tree_view: a #GtkTreeView
15243  * @enabled: %TRUE to enable tree line drawing, %FALSE otherwise.
15244  *
15245  * Sets whether to draw lines interconnecting the expanders in @tree_view.
15246  * This does not have any visible effects for lists.
15247  *
15248  * Since: 2.10
15249  */
15250 void
15251 gtk_tree_view_set_enable_tree_lines (GtkTreeView *tree_view,
15252                                      gboolean     enabled)
15253 {
15254   GtkTreeViewPrivate *priv;
15255   GtkWidget *widget;
15256   gboolean was_enabled;
15257
15258   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
15259
15260   enabled = enabled != FALSE;
15261
15262   priv = tree_view->priv;
15263   widget = GTK_WIDGET (tree_view);
15264
15265   was_enabled = priv->tree_lines_enabled;
15266
15267   priv->tree_lines_enabled = enabled;
15268
15269   if (gtk_widget_get_realized (widget))
15270     {
15271       if (!enabled && priv->tree_line_width)
15272         {
15273           priv->tree_line_width = 0;
15274         }
15275
15276       if (enabled && !priv->tree_line_width)
15277         {
15278           gint8 *dash_list;
15279           gtk_widget_style_get (widget,
15280                                 "tree-line-width", &priv->tree_line_width,
15281                                 "tree-line-pattern", (gchar *)&dash_list,
15282                                 NULL);
15283
15284           if (dash_list)
15285             {
15286               priv->tree_line_dashes[0] = dash_list[0];
15287               if (dash_list[0])
15288                 priv->tree_line_dashes[1] = dash_list[1];
15289
15290               g_free (dash_list);
15291             }
15292           else
15293             {
15294               priv->tree_line_dashes[0] = 1;
15295               priv->tree_line_dashes[1] = 1;
15296             }
15297         }
15298     }
15299
15300   if (was_enabled != enabled)
15301     {
15302       gtk_widget_queue_draw (GTK_WIDGET (tree_view));
15303
15304       g_object_notify (G_OBJECT (tree_view), "enable-tree-lines");
15305     }
15306 }
15307
15308
15309 /**
15310  * gtk_tree_view_set_show_expanders:
15311  * @tree_view: a #GtkTreeView
15312  * @enabled: %TRUE to enable expander drawing, %FALSE otherwise.
15313  *
15314  * Sets whether to draw and enable expanders and indent child rows in
15315  * @tree_view.  When disabled there will be no expanders visible in trees
15316  * and there will be no way to expand and collapse rows by default.  Also
15317  * note that hiding the expanders will disable the default indentation.  You
15318  * can set a custom indentation in this case using
15319  * gtk_tree_view_set_level_indentation().
15320  * This does not have any visible effects for lists.
15321  *
15322  * Since: 2.12
15323  */
15324 void
15325 gtk_tree_view_set_show_expanders (GtkTreeView *tree_view,
15326                                   gboolean     enabled)
15327 {
15328   gboolean was_enabled;
15329
15330   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
15331
15332   enabled = enabled != FALSE;
15333   was_enabled = GTK_TREE_VIEW_FLAG_SET (tree_view, GTK_TREE_VIEW_SHOW_EXPANDERS);
15334
15335   if (enabled)
15336     GTK_TREE_VIEW_SET_FLAG (tree_view, GTK_TREE_VIEW_SHOW_EXPANDERS);
15337   else
15338     GTK_TREE_VIEW_UNSET_FLAG (tree_view, GTK_TREE_VIEW_SHOW_EXPANDERS);
15339
15340   if (enabled != was_enabled)
15341     gtk_widget_queue_draw (GTK_WIDGET (tree_view));
15342 }
15343
15344 /**
15345  * gtk_tree_view_get_show_expanders:
15346  * @tree_view: a #GtkTreeView.
15347  *
15348  * Returns whether or not expanders are drawn in @tree_view.
15349  *
15350  * Return value: %TRUE if expanders are drawn in @tree_view, %FALSE
15351  * otherwise.
15352  *
15353  * Since: 2.12
15354  */
15355 gboolean
15356 gtk_tree_view_get_show_expanders (GtkTreeView *tree_view)
15357 {
15358   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), FALSE);
15359
15360   return GTK_TREE_VIEW_FLAG_SET (tree_view, GTK_TREE_VIEW_SHOW_EXPANDERS);
15361 }
15362
15363 /**
15364  * gtk_tree_view_set_level_indentation:
15365  * @tree_view: a #GtkTreeView
15366  * @indentation: the amount, in pixels, of extra indentation in @tree_view.
15367  *
15368  * Sets the amount of extra indentation for child levels to use in @tree_view
15369  * in addition to the default indentation.  The value should be specified in
15370  * pixels, a value of 0 disables this feature and in this case only the default
15371  * indentation will be used.
15372  * This does not have any visible effects for lists.
15373  *
15374  * Since: 2.12
15375  */
15376 void
15377 gtk_tree_view_set_level_indentation (GtkTreeView *tree_view,
15378                                      gint         indentation)
15379 {
15380   tree_view->priv->level_indentation = indentation;
15381
15382   gtk_widget_queue_draw (GTK_WIDGET (tree_view));
15383 }
15384
15385 /**
15386  * gtk_tree_view_get_level_indentation:
15387  * @tree_view: a #GtkTreeView.
15388  *
15389  * Returns the amount, in pixels, of extra indentation for child levels
15390  * in @tree_view.
15391  *
15392  * Return value: the amount of extra indentation for child levels in
15393  * @tree_view.  A return value of 0 means that this feature is disabled.
15394  *
15395  * Since: 2.12
15396  */
15397 gint
15398 gtk_tree_view_get_level_indentation (GtkTreeView *tree_view)
15399 {
15400   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), 0);
15401
15402   return tree_view->priv->level_indentation;
15403 }
15404
15405 /**
15406  * gtk_tree_view_set_tooltip_row:
15407  * @tree_view: a #GtkTreeView
15408  * @tooltip: a #GtkTooltip
15409  * @path: a #GtkTreePath
15410  *
15411  * Sets the tip area of @tooltip to be the area covered by the row at @path.
15412  * See also gtk_tree_view_set_tooltip_column() for a simpler alternative.
15413  * See also gtk_tooltip_set_tip_area().
15414  *
15415  * Since: 2.12
15416  */
15417 void
15418 gtk_tree_view_set_tooltip_row (GtkTreeView *tree_view,
15419                                GtkTooltip  *tooltip,
15420                                GtkTreePath *path)
15421 {
15422   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
15423   g_return_if_fail (GTK_IS_TOOLTIP (tooltip));
15424
15425   gtk_tree_view_set_tooltip_cell (tree_view, tooltip, path, NULL, NULL);
15426 }
15427
15428 /**
15429  * gtk_tree_view_set_tooltip_cell:
15430  * @tree_view: a #GtkTreeView
15431  * @tooltip: a #GtkTooltip
15432  * @path: (allow-none): a #GtkTreePath or %NULL
15433  * @column: (allow-none): a #GtkTreeViewColumn or %NULL
15434  * @cell: (allow-none): a #GtkCellRenderer or %NULL
15435  *
15436  * Sets the tip area of @tooltip to the area @path, @column and @cell have
15437  * in common.  For example if @path is %NULL and @column is set, the tip
15438  * area will be set to the full area covered by @column.  See also
15439  * gtk_tooltip_set_tip_area().
15440  *
15441  * Note that if @path is not specified and @cell is set and part of a column
15442  * containing the expander, the tooltip might not show and hide at the correct
15443  * position.  In such cases @path must be set to the current node under the
15444  * mouse cursor for this function to operate correctly.
15445  *
15446  * See also gtk_tree_view_set_tooltip_column() for a simpler alternative.
15447  *
15448  * Since: 2.12
15449  */
15450 void
15451 gtk_tree_view_set_tooltip_cell (GtkTreeView       *tree_view,
15452                                 GtkTooltip        *tooltip,
15453                                 GtkTreePath       *path,
15454                                 GtkTreeViewColumn *column,
15455                                 GtkCellRenderer   *cell)
15456 {
15457   GdkRectangle rect;
15458
15459   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
15460   g_return_if_fail (GTK_IS_TOOLTIP (tooltip));
15461   g_return_if_fail (column == NULL || GTK_IS_TREE_VIEW_COLUMN (column));
15462   g_return_if_fail (cell == NULL || GTK_IS_CELL_RENDERER (cell));
15463
15464   /* Determine x values. */
15465   if (column && cell)
15466     {
15467       GdkRectangle tmp;
15468       gint start, width;
15469
15470       /* We always pass in path here, whether it is NULL or not.
15471        * For cells in expander columns path must be specified so that
15472        * we can correctly account for the indentation.  This also means
15473        * that the tooltip is constrained vertically by the "Determine y
15474        * values" code below; this is not a real problem since cells actually
15475        * don't stretch vertically in constrast to columns.
15476        */
15477       gtk_tree_view_get_cell_area (tree_view, path, column, &tmp);
15478       gtk_tree_view_column_cell_get_position (column, cell, &start, &width);
15479
15480       gtk_tree_view_convert_bin_window_to_widget_coords (tree_view,
15481                                                          tmp.x + start, 0,
15482                                                          &rect.x, NULL);
15483       rect.width = width;
15484     }
15485   else if (column)
15486     {
15487       GdkRectangle tmp;
15488
15489       gtk_tree_view_get_background_area (tree_view, NULL, column, &tmp);
15490       gtk_tree_view_convert_bin_window_to_widget_coords (tree_view,
15491                                                          tmp.x, 0,
15492                                                          &rect.x, NULL);
15493       rect.width = tmp.width;
15494     }
15495   else
15496     {
15497       rect.x = 0;
15498       rect.width = GTK_WIDGET (tree_view)->allocation.width;
15499     }
15500
15501   /* Determine y values. */
15502   if (path)
15503     {
15504       GdkRectangle tmp;
15505
15506       gtk_tree_view_get_background_area (tree_view, path, NULL, &tmp);
15507       gtk_tree_view_convert_bin_window_to_widget_coords (tree_view,
15508                                                          0, tmp.y,
15509                                                          NULL, &rect.y);
15510       rect.height = tmp.height;
15511     }
15512   else
15513     {
15514       rect.y = 0;
15515       rect.height = tree_view->priv->vadjustment->page_size;
15516     }
15517
15518   gtk_tooltip_set_tip_area (tooltip, &rect);
15519 }
15520
15521 /**
15522  * gtk_tree_view_get_tooltip_context:
15523  * @tree_view: a #GtkTreeView
15524  * @x: the x coordinate (relative to widget coordinates)
15525  * @y: the y coordinate (relative to widget coordinates)
15526  * @keyboard_tip: whether this is a keyboard tooltip or not
15527  * @model: (out) (allow-none): a pointer to receive a #GtkTreeModel or %NULL
15528  * @path: (out) (allow-none): a pointer to receive a #GtkTreePath or %NULL
15529  * @iter: (out) (allow-none): a pointer to receive a #GtkTreeIter or %NULL
15530  *
15531  * This function is supposed to be used in a #GtkWidget::query-tooltip
15532  * signal handler for #GtkTreeView.  The @x, @y and @keyboard_tip values
15533  * which are received in the signal handler, should be passed to this
15534  * function without modification.
15535  *
15536  * The return value indicates whether there is a tree view row at the given
15537  * coordinates (%TRUE) or not (%FALSE) for mouse tooltips.  For keyboard
15538  * tooltips the row returned will be the cursor row.  When %TRUE, then any of
15539  * @model, @path and @iter which have been provided will be set to point to
15540  * that row and the corresponding model.  @x and @y will always be converted
15541  * to be relative to @tree_view's bin_window if @keyboard_tooltip is %FALSE.
15542  *
15543  * Return value: whether or not the given tooltip context points to a row.
15544  *
15545  * Since: 2.12
15546  */
15547 gboolean
15548 gtk_tree_view_get_tooltip_context (GtkTreeView   *tree_view,
15549                                    gint          *x,
15550                                    gint          *y,
15551                                    gboolean       keyboard_tip,
15552                                    GtkTreeModel **model,
15553                                    GtkTreePath  **path,
15554                                    GtkTreeIter   *iter)
15555 {
15556   GtkTreePath *tmppath = NULL;
15557
15558   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), FALSE);
15559   g_return_val_if_fail (x != NULL, FALSE);
15560   g_return_val_if_fail (y != NULL, FALSE);
15561
15562   if (keyboard_tip)
15563     {
15564       gtk_tree_view_get_cursor (tree_view, &tmppath, NULL);
15565
15566       if (!tmppath)
15567         return FALSE;
15568     }
15569   else
15570     {
15571       gtk_tree_view_convert_widget_to_bin_window_coords (tree_view, *x, *y,
15572                                                          x, y);
15573
15574       if (!gtk_tree_view_get_path_at_pos (tree_view, *x, *y,
15575                                           &tmppath, NULL, NULL, NULL))
15576         return FALSE;
15577     }
15578
15579   if (model)
15580     *model = gtk_tree_view_get_model (tree_view);
15581
15582   if (iter)
15583     gtk_tree_model_get_iter (gtk_tree_view_get_model (tree_view),
15584                              iter, tmppath);
15585
15586   if (path)
15587     *path = tmppath;
15588   else
15589     gtk_tree_path_free (tmppath);
15590
15591   return TRUE;
15592 }
15593
15594 static gboolean
15595 gtk_tree_view_set_tooltip_query_cb (GtkWidget  *widget,
15596                                     gint        x,
15597                                     gint        y,
15598                                     gboolean    keyboard_tip,
15599                                     GtkTooltip *tooltip,
15600                                     gpointer    data)
15601 {
15602   GValue value = { 0, };
15603   GValue transformed = { 0, };
15604   GtkTreeIter iter;
15605   GtkTreePath *path;
15606   GtkTreeModel *model;
15607   GtkTreeView *tree_view = GTK_TREE_VIEW (widget);
15608
15609   if (!gtk_tree_view_get_tooltip_context (GTK_TREE_VIEW (widget),
15610                                           &x, &y,
15611                                           keyboard_tip,
15612                                           &model, &path, &iter))
15613     return FALSE;
15614
15615   gtk_tree_model_get_value (model, &iter,
15616                             tree_view->priv->tooltip_column, &value);
15617
15618   g_value_init (&transformed, G_TYPE_STRING);
15619
15620   if (!g_value_transform (&value, &transformed))
15621     {
15622       g_value_unset (&value);
15623       gtk_tree_path_free (path);
15624
15625       return FALSE;
15626     }
15627
15628   g_value_unset (&value);
15629
15630   if (!g_value_get_string (&transformed))
15631     {
15632       g_value_unset (&transformed);
15633       gtk_tree_path_free (path);
15634
15635       return FALSE;
15636     }
15637
15638   gtk_tooltip_set_markup (tooltip, g_value_get_string (&transformed));
15639   gtk_tree_view_set_tooltip_row (tree_view, tooltip, path);
15640
15641   gtk_tree_path_free (path);
15642   g_value_unset (&transformed);
15643
15644   return TRUE;
15645 }
15646
15647 /**
15648  * gtk_tree_view_set_tooltip_column:
15649  * @tree_view: a #GtkTreeView
15650  * @column: an integer, which is a valid column number for @tree_view's model
15651  *
15652  * If you only plan to have simple (text-only) tooltips on full rows, you
15653  * can use this function to have #GtkTreeView handle these automatically
15654  * for you. @column should be set to the column in @tree_view's model
15655  * containing the tooltip texts, or -1 to disable this feature.
15656  *
15657  * When enabled, #GtkWidget::has-tooltip will be set to %TRUE and
15658  * @tree_view will connect a #GtkWidget::query-tooltip signal handler.
15659  *
15660  * Note that the signal handler sets the text with gtk_tooltip_set_markup(),
15661  * so &amp;, &lt;, etc have to be escaped in the text.
15662  *
15663  * Since: 2.12
15664  */
15665 void
15666 gtk_tree_view_set_tooltip_column (GtkTreeView *tree_view,
15667                                   gint         column)
15668 {
15669   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
15670
15671   if (column == tree_view->priv->tooltip_column)
15672     return;
15673
15674   if (column == -1)
15675     {
15676       g_signal_handlers_disconnect_by_func (tree_view,
15677                                             gtk_tree_view_set_tooltip_query_cb,
15678                                             NULL);
15679       gtk_widget_set_has_tooltip (GTK_WIDGET (tree_view), FALSE);
15680     }
15681   else
15682     {
15683       if (tree_view->priv->tooltip_column == -1)
15684         {
15685           g_signal_connect (tree_view, "query-tooltip",
15686                             G_CALLBACK (gtk_tree_view_set_tooltip_query_cb), NULL);
15687           gtk_widget_set_has_tooltip (GTK_WIDGET (tree_view), TRUE);
15688         }
15689     }
15690
15691   tree_view->priv->tooltip_column = column;
15692   g_object_notify (G_OBJECT (tree_view), "tooltip-column");
15693 }
15694
15695 /**
15696  * gtk_tree_view_get_tooltip_column:
15697  * @tree_view: a #GtkTreeView
15698  *
15699  * Returns the column of @tree_view's model which is being used for
15700  * displaying tooltips on @tree_view's rows.
15701  *
15702  * Return value: the index of the tooltip column that is currently being
15703  * used, or -1 if this is disabled.
15704  *
15705  * Since: 2.12
15706  */
15707 gint
15708 gtk_tree_view_get_tooltip_column (GtkTreeView *tree_view)
15709 {
15710   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), 0);
15711
15712   return tree_view->priv->tooltip_column;
15713 }