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 <math.h>
  23 #include <string.h>
  24 #include <gdk/gdkkeysyms.h>
  25
  26 #include "gtktreeview.h"
  27 #include "gtkrbtree.h"
  28 #include "gtktreednd.h"
  29 #include "gtktreeprivate.h"
  30 #include "gtkcellrenderer.h"
  31 #include "gtkmain.h"
  32 #include "gtkmarshalers.h"
  33 #include "gtkbuildable.h"
  34 #include "gtkbutton.h"
  35 #include "gtkalignment.h"
  36 #include "gtklabel.h"
  37 #include "gtkhbox.h"
  38 #include "gtkvbox.h"
  39 #include "gtkarrow.h"
  40 #include "gtkintl.h"
  41 #include "gtkbindings.h"
  42 #include "gtkcontainer.h"
  43 #include "gtkentry.h"
  44 #include "gtkframe.h"
  45 #include "gtktreemodelsort.h"
  46 #include "gtktooltip.h"
  47 #include "gtksizerequest.h"
  48 #include "gtkprivate.h"
  49
  50 #define GTK_TREE_VIEW_PRIORITY_VALIDATE (GDK_PRIORITY_REDRAW + 5)
  51 #define GTK_TREE_VIEW_PRIORITY_SCROLL_SYNC (GTK_TREE_VIEW_PRIORITY_VALIDATE + 2)
  52 #define GTK_TREE_VIEW_TIME_MS_PER_IDLE 30
  53 #define SCROLL_EDGE_SIZE 15
  54 #define EXPANDER_EXTRA_PADDING 4
  55 #define GTK_TREE_VIEW_SEARCH_DIALOG_TIMEOUT 5000
  56 #define AUTO_EXPAND_TIMEOUT 500
  57
  58 /* The "background" areas of all rows/cells add up to cover the entire tree.
  59  * The background includes all inter-row and inter-cell spacing.
  60  * The "cell" areas are the cell_area passed in to gtk_cell_renderer_render(),
  61  * i.e. just the cells, no spacing.
  62  */
  63
  64 #define BACKGROUND_HEIGHT(node) (GTK_RBNODE_GET_HEIGHT (node))
  65 #define CELL_HEIGHT(node, separator) ((BACKGROUND_HEIGHT (node)) - (separator))
  66
  67 /* Translate from bin_window coordinates to rbtree (tree coordinates) and
  68  * vice versa.
  69  */
  70 #define TREE_WINDOW_Y_TO_RBTREE_Y(tree_view,y) ((y) + tree_view->priv->dy)
  71 #define RBTREE_Y_TO_TREE_WINDOW_Y(tree_view,y) ((y) - tree_view->priv->dy)
  72
  73 /* This is in bin_window coordinates */
  74 #define BACKGROUND_FIRST_PIXEL(tree_view,tree,node) (RBTREE_Y_TO_TREE_WINDOW_Y (tree_view, _gtk_rbtree_node_find_offset ((tree), (node))))
  75 #define CELL_FIRST_PIXEL(tree_view,tree,node,separator) (BACKGROUND_FIRST_PIXEL (tree_view,tree,node) + separator/2)
  76
  77 #define ROW_HEIGHT(tree_view,height) \
  78   ((height > 0) ? (height) : (tree_view)->priv->expander_size)
  79
  80
  81 typedef struct _GtkTreeViewChild GtkTreeViewChild;
  82 struct _GtkTreeViewChild
  83 {
  84   GtkWidget *widget;
  85   gint x;
  86   gint y;
  87   gint width;
  88   gint height;
  89 };
  90
  91
  92 typedef struct _TreeViewDragInfo TreeViewDragInfo;
  93 struct _TreeViewDragInfo
  94 {
  95   GdkModifierType start_button_mask;
  96   GtkTargetList *_unused_source_target_list;
  97   GdkDragAction source_actions;
  98
  99   GtkTargetList *_unused_dest_target_list;
 100
 101   guint source_set : 1;
 102   guint dest_set : 1;
 103 };
 104
 105
 106 /* Signals */
 107 enum
 108 {
 109   ROW_ACTIVATED,
 110   TEST_EXPAND_ROW,
 111   TEST_COLLAPSE_ROW,
 112   ROW_EXPANDED,
 113   ROW_COLLAPSED,
 114   COLUMNS_CHANGED,
 115   CURSOR_CHANGED,
 116   MOVE_CURSOR,
 117   SELECT_ALL,
 118   UNSELECT_ALL,
 119   SELECT_CURSOR_ROW,
 120   TOGGLE_CURSOR_ROW,
 121   EXPAND_COLLAPSE_CURSOR_ROW,
 122   SELECT_CURSOR_PARENT,
 123   START_INTERACTIVE_SEARCH,
 124   LAST_SIGNAL
 125 };
 126
 127 /* Properties */
 128 enum {
 129   PROP_0,
 130   PROP_MODEL,
 131   PROP_HADJUSTMENT,
 132   PROP_VADJUSTMENT,
 133   PROP_HEADERS_VISIBLE,
 134   PROP_HEADERS_CLICKABLE,
 135   PROP_EXPANDER_COLUMN,
 136   PROP_REORDERABLE,
 137   PROP_RULES_HINT,
 138   PROP_ENABLE_SEARCH,
 139   PROP_SEARCH_COLUMN,
 140   PROP_FIXED_HEIGHT_MODE,
 141   PROP_HOVER_SELECTION,
 142   PROP_HOVER_EXPAND,
 143   PROP_SHOW_EXPANDERS,
 144   PROP_LEVEL_INDENTATION,
 145   PROP_RUBBER_BANDING,
 146   PROP_ENABLE_GRID_LINES,
 147   PROP_ENABLE_TREE_LINES,
 148   PROP_TOOLTIP_COLUMN
 149 };
 150
 151 /* object signals */
 152 static void     gtk_tree_view_finalize             (GObject          *object);
 153 static void     gtk_tree_view_set_property         (GObject         *object,
 154                                                     guint            prop_id,
 155                                                     const GValue    *value,
 156                                                     GParamSpec      *pspec);
 157 static void     gtk_tree_view_get_property         (GObject         *object,
 158                                                     guint            prop_id,
 159                                                     GValue          *value,
 160                                                     GParamSpec      *pspec);
 161
 162 /* gtkobject signals */
 163 static void     gtk_tree_view_destroy              (GtkObject        *object);
 164
 165 /* gtkwidget signals */
 166 static void     gtk_tree_view_realize              (GtkWidget        *widget);
 167 static void     gtk_tree_view_unrealize            (GtkWidget        *widget);
 168 static void     gtk_tree_view_map                  (GtkWidget        *widget);
 169 static void     gtk_tree_view_size_request         (GtkWidget        *widget,
 170                                                     GtkRequisition   *requisition);
 171 static void     gtk_tree_view_size_allocate        (GtkWidget        *widget,
 172                                                     GtkAllocation    *allocation);
 173 static gboolean gtk_tree_view_draw                 (GtkWidget        *widget,
 174                                                     cairo_t          *cr);
 175 static gboolean gtk_tree_view_key_press            (GtkWidget        *widget,
 176                                                     GdkEventKey      *event);
 177 static gboolean gtk_tree_view_key_release          (GtkWidget        *widget,
 178                                                     GdkEventKey      *event);
 179 static gboolean gtk_tree_view_motion               (GtkWidget        *widget,
 180                                                     GdkEventMotion   *event);
 181 static gboolean gtk_tree_view_enter_notify         (GtkWidget        *widget,
 182                                                     GdkEventCrossing *event);
 183 static gboolean gtk_tree_view_leave_notify         (GtkWidget        *widget,
 184                                                     GdkEventCrossing *event);
 185 static gboolean gtk_tree_view_button_press         (GtkWidget        *widget,
 186                                                     GdkEventButton   *event);
 187 static gboolean gtk_tree_view_button_release       (GtkWidget        *widget,
 188                                                     GdkEventButton   *event);
 189 static gboolean gtk_tree_view_grab_broken          (GtkWidget          *widget,
 190                                                     GdkEventGrabBroken *event);
 191 #if 0
 192 static gboolean gtk_tree_view_configure            (GtkWidget         *widget,
 193                                                     GdkEventConfigure *event);
 194 #endif
 195
 196 static void     gtk_tree_view_set_focus_child      (GtkContainer     *container,
 197                                                     GtkWidget        *child);
 198 static gint     gtk_tree_view_focus_out            (GtkWidget        *widget,
 199                                                     GdkEventFocus    *event);
 200 static gint     gtk_tree_view_focus                (GtkWidget        *widget,
 201                                                     GtkDirectionType  direction);
 202 static void     gtk_tree_view_grab_focus           (GtkWidget        *widget);
 203 static void     gtk_tree_view_style_set            (GtkWidget        *widget,
 204                                                     GtkStyle         *previous_style);
 205 static void     gtk_tree_view_grab_notify          (GtkWidget        *widget,
 206                                                     gboolean          was_grabbed);
 207 static void     gtk_tree_view_state_changed        (GtkWidget        *widget,
 208                                                     GtkStateType      previous_state);
 209
 210 /* container signals */
 211 static void     gtk_tree_view_remove               (GtkContainer     *container,
 212                                                     GtkWidget        *widget);
 213 static void     gtk_tree_view_forall               (GtkContainer     *container,
 214                                                     gboolean          include_internals,
 215                                                     GtkCallback       callback,
 216                                                     gpointer          callback_data);
 217
 218 /* Source side drag signals */
 219 static void gtk_tree_view_drag_begin       (GtkWidget        *widget,
 220                                             GdkDragContext   *context);
 221 static void gtk_tree_view_drag_end         (GtkWidget        *widget,
 222                                             GdkDragContext   *context);
 223 static void gtk_tree_view_drag_data_get    (GtkWidget        *widget,
 224                                             GdkDragContext   *context,
 225                                             GtkSelectionData *selection_data,
 226                                             guint             info,
 227                                             guint             time);
 228 static void gtk_tree_view_drag_data_delete (GtkWidget        *widget,
 229                                             GdkDragContext   *context);
 230
 231 /* Target side drag signals */
 232 static void     gtk_tree_view_drag_leave         (GtkWidget        *widget,
 233                                                   GdkDragContext   *context,
 234                                                   guint             time);
 235 static gboolean gtk_tree_view_drag_motion        (GtkWidget        *widget,
 236                                                   GdkDragContext   *context,
 237                                                   gint              x,
 238                                                   gint              y,
 239                                                   guint             time);
 240 static gboolean gtk_tree_view_drag_drop          (GtkWidget        *widget,
 241                                                   GdkDragContext   *context,
 242                                                   gint              x,
 243                                                   gint              y,
 244                                                   guint             time);
 245 static void     gtk_tree_view_drag_data_received (GtkWidget        *widget,
 246                                                   GdkDragContext   *context,
 247                                                   gint              x,
 248                                                   gint              y,
 249                                                   GtkSelectionData *selection_data,
 250                                                   guint             info,
 251                                                   guint             time);
 252
 253 /* tree_model signals */
 254 static void gtk_tree_view_set_adjustments                 (GtkTreeView     *tree_view,
 255                                                            GtkAdjustment   *hadj,
 256                                                            GtkAdjustment   *vadj);
 257 static gboolean gtk_tree_view_real_move_cursor            (GtkTreeView     *tree_view,
 258                                                            GtkMovementStep  step,
 259                                                            gint             count);
 260 static gboolean gtk_tree_view_real_select_all             (GtkTreeView     *tree_view);
 261 static gboolean gtk_tree_view_real_unselect_all           (GtkTreeView     *tree_view);
 262 static gboolean gtk_tree_view_real_select_cursor_row      (GtkTreeView     *tree_view,
 263                                                            gboolean         start_editing);
 264 static gboolean gtk_tree_view_real_toggle_cursor_row      (GtkTreeView     *tree_view);
 265 static gboolean gtk_tree_view_real_expand_collapse_cursor_row (GtkTreeView     *tree_view,
 266                                                                gboolean         logical,
 267                                                                gboolean         expand,
 268                                                                gboolean         open_all);
 269 static gboolean gtk_tree_view_real_select_cursor_parent   (GtkTreeView     *tree_view);
 270 static void gtk_tree_view_row_changed                     (GtkTreeModel    *model,
 271                                                            GtkTreePath     *path,
 272                                                            GtkTreeIter     *iter,
 273                                                            gpointer         data);
 274 static void gtk_tree_view_row_inserted                    (GtkTreeModel    *model,
 275                                                            GtkTreePath     *path,
 276                                                            GtkTreeIter     *iter,
 277                                                            gpointer         data);
 278 static void gtk_tree_view_row_has_child_toggled           (GtkTreeModel    *model,
 279                                                            GtkTreePath     *path,
 280                                                            GtkTreeIter     *iter,
 281                                                            gpointer         data);
 282 static void gtk_tree_view_row_deleted                     (GtkTreeModel    *model,
 283                                                            GtkTreePath     *path,
 284                                                            gpointer         data);
 285 static void gtk_tree_view_rows_reordered                  (GtkTreeModel    *model,
 286                                                            GtkTreePath     *parent,
 287                                                            GtkTreeIter     *iter,
 288                                                            gint            *new_order,
 289                                                            gpointer         data);
 290
 291 /* Incremental reflow */
 292 static gboolean validate_row             (GtkTreeView *tree_view,
 293                                           GtkRBTree   *tree,
 294                                           GtkRBNode   *node,
 295                                           GtkTreeIter *iter,
 296                                           GtkTreePath *path);
 297 static void     validate_visible_area    (GtkTreeView *tree_view);
 298 static gboolean validate_rows_handler    (GtkTreeView *tree_view);
 299 static gboolean do_validate_rows         (GtkTreeView *tree_view,
 300                                           gboolean     size_request);
 301 static gboolean validate_rows            (GtkTreeView *tree_view);
 302 static gboolean presize_handler_callback (gpointer     data);
 303 static void     install_presize_handler  (GtkTreeView *tree_view);
 304 static void     install_scroll_sync_handler (GtkTreeView *tree_view);
 305 static void     gtk_tree_view_set_top_row   (GtkTreeView *tree_view,
 306                                              GtkTreePath *path,
 307                                              gint         offset);
 308 static void     gtk_tree_view_dy_to_top_row (GtkTreeView *tree_view);
 309 static void     gtk_tree_view_top_row_to_dy (GtkTreeView *tree_view);
 310 static void     invalidate_empty_focus      (GtkTreeView *tree_view);
 311
 312 /* Internal functions */
 313 static gboolean gtk_tree_view_is_expander_column             (GtkTreeView        *tree_view,
 314                                                               GtkTreeViewColumn  *column);
 315 static void     gtk_tree_view_add_move_binding               (GtkBindingSet      *binding_set,
 316                                                               guint               keyval,
 317                                                               guint               modmask,
 318                                                               gboolean            add_shifted_binding,
 319                                                               GtkMovementStep     step,
 320                                                               gint                count);
 321 static gint     gtk_tree_view_unref_and_check_selection_tree (GtkTreeView        *tree_view,
 322                                                               GtkRBTree          *tree);
 323 static void     gtk_tree_view_queue_draw_path                (GtkTreeView        *tree_view,
 324                                                               GtkTreePath        *path,
 325                                                               const GdkRectangle *clip_rect);
 326 static void     gtk_tree_view_queue_draw_arrow               (GtkTreeView        *tree_view,
 327                                                               GtkRBTree          *tree,
 328                                                               GtkRBNode          *node);
 329 static void     gtk_tree_view_draw_arrow                     (GtkTreeView        *tree_view,
 330                                                               cairo_t            *cr,
 331                                                               GtkRBTree          *tree,
 332                                                               GtkRBNode          *node,
 333                                                               gint                x,
 334                                                               gint                y);
 335 static void     gtk_tree_view_get_arrow_xrange               (GtkTreeView        *tree_view,
 336                                                               GtkRBTree          *tree,
 337                                                               gint               *x1,
 338                                                               gint               *x2);
 339 static gint     gtk_tree_view_new_column_width               (GtkTreeView        *tree_view,
 340                                                               gint                i,
 341                                                               gint               *x);
 342 static void     gtk_tree_view_adjustment_changed             (GtkAdjustment      *adjustment,
 343                                                               GtkTreeView        *tree_view);
 344 static void     gtk_tree_view_build_tree                     (GtkTreeView        *tree_view,
 345                                                               GtkRBTree          *tree,
 346                                                               GtkTreeIter        *iter,
 347                                                               gint                depth,
 348                                                               gboolean            recurse);
 349 static void     gtk_tree_view_clamp_node_visible             (GtkTreeView        *tree_view,
 350                                                               GtkRBTree          *tree,
 351                                                               GtkRBNode          *node);
 352 static void     gtk_tree_view_clamp_column_visible           (GtkTreeView        *tree_view,
 353                                                               GtkTreeViewColumn  *column,
 354                                                               gboolean            focus_to_cell);
 355 static gboolean gtk_tree_view_maybe_begin_dragging_row       (GtkTreeView        *tree_view,
 356                                                               GdkEventMotion     *event);
 357 static void     gtk_tree_view_focus_to_cursor                (GtkTreeView        *tree_view);
 358 static void     gtk_tree_view_move_cursor_up_down            (GtkTreeView        *tree_view,
 359                                                               gint                count);
 360 static void     gtk_tree_view_move_cursor_page_up_down       (GtkTreeView        *tree_view,
 361                                                               gint                count);
 362 static void     gtk_tree_view_move_cursor_left_right         (GtkTreeView        *tree_view,
 363                                                               gint                count);
 364 static void     gtk_tree_view_move_cursor_start_end          (GtkTreeView        *tree_view,
 365                                                               gint                count);
 366 static gboolean gtk_tree_view_real_collapse_row              (GtkTreeView        *tree_view,
 367                                                               GtkTreePath        *path,
 368                                                               GtkRBTree          *tree,
 369                                                               GtkRBNode          *node,
 370                                                               gboolean            animate);
 371 static gboolean gtk_tree_view_real_expand_row                (GtkTreeView        *tree_view,
 372                                                               GtkTreePath        *path,
 373                                                               GtkRBTree          *tree,
 374                                                               GtkRBNode          *node,
 375                                                               gboolean            open_all,
 376                                                               gboolean            animate);
 377 static void     gtk_tree_view_real_set_cursor                (GtkTreeView        *tree_view,
 378                                                               GtkTreePath        *path,
 379                                                               gboolean            clear_and_select,
 380                                                               gboolean            clamp_node);
 381 static gboolean gtk_tree_view_has_special_cell               (GtkTreeView        *tree_view);
 382 static void     column_sizing_notify                         (GObject            *object,
 383                                                               GParamSpec         *pspec,
 384                                                               gpointer            data);
 385 static gboolean expand_collapse_timeout                      (gpointer            data);
 386 static void     add_expand_collapse_timeout                  (GtkTreeView        *tree_view,
 387                                                               GtkRBTree          *tree,
 388                                                               GtkRBNode          *node,
 389                                                               gboolean            expand);
 390 static void     remove_expand_collapse_timeout               (GtkTreeView        *tree_view);
 391 static void     cancel_arrow_animation                       (GtkTreeView        *tree_view);
 392 static gboolean do_expand_collapse                           (GtkTreeView        *tree_view);
 393 static void     gtk_tree_view_stop_rubber_band               (GtkTreeView        *tree_view);
 394 static void     update_prelight                              (GtkTreeView        *tree_view,
 395                                                               int                 x,
 396                                                               int                 y);
 397
 398 /* interactive search */
 399 static void     gtk_tree_view_ensure_interactive_directory (GtkTreeView *tree_view);
 400 static void     gtk_tree_view_search_dialog_hide        (GtkWidget        *search_dialog,
 401                                                          GtkTreeView      *tree_view,
 402                                                          GdkDevice        *device);
 403 static void     gtk_tree_view_search_position_func      (GtkTreeView      *tree_view,
 404                                                          GtkWidget        *search_dialog,
 405                                                          gpointer          user_data);
 406 static void     gtk_tree_view_search_disable_popdown    (GtkEntry         *entry,
 407                                                          GtkMenu          *menu,
 408                                                          gpointer          data);
 409 static void     gtk_tree_view_search_preedit_changed    (GtkIMContext     *im_context,
 410                                                          GtkTreeView      *tree_view);
 411 static void     gtk_tree_view_search_activate           (GtkEntry         *entry,
 412                                                          GtkTreeView      *tree_view);
 413 static gboolean gtk_tree_view_real_search_enable_popdown(gpointer          data);
 414 static void     gtk_tree_view_search_enable_popdown     (GtkWidget        *widget,
 415                                                          gpointer          data);
 416 static gboolean gtk_tree_view_search_delete_event       (GtkWidget        *widget,
 417                                                          GdkEventAny      *event,
 418                                                          GtkTreeView      *tree_view);
 419 static gboolean gtk_tree_view_search_button_press_event (GtkWidget        *widget,
 420                                                          GdkEventButton   *event,
 421                                                          GtkTreeView      *tree_view);
 422 static gboolean gtk_tree_view_search_scroll_event       (GtkWidget        *entry,
 423                                                          GdkEventScroll   *event,
 424                                                          GtkTreeView      *tree_view);
 425 static gboolean gtk_tree_view_search_key_press_event    (GtkWidget        *entry,
 426                                                          GdkEventKey      *event,
 427                                                          GtkTreeView      *tree_view);
 428 static gboolean gtk_tree_view_search_move               (GtkWidget        *window,
 429                                                          GtkTreeView      *tree_view,
 430                                                          gboolean          up);
 431 static gboolean gtk_tree_view_search_equal_func         (GtkTreeModel     *model,
 432                                                          gint              column,
 433                                                          const gchar      *key,
 434                                                          GtkTreeIter      *iter,
 435                                                          gpointer          search_data);
 436 static gboolean gtk_tree_view_search_iter               (GtkTreeModel     *model,
 437                                                          GtkTreeSelection *selection,
 438                                                          GtkTreeIter      *iter,
 439                                                          const gchar      *text,
 440                                                          gint             *count,
 441                                                          gint              n);
 442 static void     gtk_tree_view_search_init               (GtkWidget        *entry,
 443                                                          GtkTreeView      *tree_view);
 444 static void     gtk_tree_view_put                       (GtkTreeView      *tree_view,
 445                                                          GtkWidget        *child_widget,
 446                                                          gint              x,
 447                                                          gint              y,
 448                                                          gint              width,
 449                                                          gint              height);
 450 static gboolean gtk_tree_view_start_editing             (GtkTreeView      *tree_view,
 451                                                          GtkTreePath      *cursor_path);
 452 static void gtk_tree_view_real_start_editing (GtkTreeView       *tree_view,
 453                                               GtkTreeViewColumn *column,
 454                                               GtkTreePath       *path,
 455                                               GtkCellEditable   *cell_editable,
 456                                               GdkRectangle      *cell_area,
 457                                               GdkEvent          *event,
 458                                               guint              flags);
 459 static void gtk_tree_view_stop_editing                  (GtkTreeView *tree_view,
 460                                                          gboolean     cancel_editing);
 461 static gboolean gtk_tree_view_real_start_interactive_search (GtkTreeView *tree_view,
 462                                                              GdkDevice   *device,
 463                                                              gboolean     keybinding);
 464 static gboolean gtk_tree_view_start_interactive_search      (GtkTreeView *tree_view);
 465 static GtkTreeViewColumn *gtk_tree_view_get_drop_column (GtkTreeView       *tree_view,
 466                                                          GtkTreeViewColumn *column,
 467                                                          gint               drop_position);
 468
 469 /* GtkBuildable */
 470 static void     gtk_tree_view_buildable_add_child          (GtkBuildable      *tree_view,
 471                                                             GtkBuilder        *builder,
 472                                                             GObject           *child,
 473                                                             const gchar       *type);
 474 static GObject *gtk_tree_view_buildable_get_internal_child (GtkBuildable      *buildable,
 475                                                             GtkBuilder        *builder,
 476                                                             const gchar       *childname);
 477 static void     gtk_tree_view_buildable_init               (GtkBuildableIface *iface);
 478
 479
 480 static gboolean scroll_row_timeout                   (gpointer     data);
 481 static void     add_scroll_timeout                   (GtkTreeView *tree_view);
 482 static void     remove_scroll_timeout                (GtkTreeView *tree_view);
 483
 484 static guint tree_view_signals [LAST_SIGNAL] = { 0 };
 485
 486 \f
 487
 488 /* GType Methods
 489  */
 490
 491 G_DEFINE_TYPE_WITH_CODE (GtkTreeView, gtk_tree_view, GTK_TYPE_CONTAINER,
 492                          G_IMPLEMENT_INTERFACE (GTK_TYPE_BUILDABLE,
 493                                                 gtk_tree_view_buildable_init))
 494
 495 static void
 496 gtk_tree_view_class_init (GtkTreeViewClass *class)
 497 {
 498   GObjectClass *o_class;
 499   GtkObjectClass *object_class;
 500   GtkWidgetClass *widget_class;
 501   GtkContainerClass *container_class;
 502   GtkBindingSet *binding_set;
 503
 504   binding_set = gtk_binding_set_by_class (class);
 505
 506   o_class = (GObjectClass *) class;
 507   object_class = (GtkObjectClass *) class;
 508   widget_class = (GtkWidgetClass *) class;
 509   container_class = (GtkContainerClass *) class;
 510
 511   /* GObject signals */
 512   o_class->set_property = gtk_tree_view_set_property;
 513   o_class->get_property = gtk_tree_view_get_property;
 514   o_class->finalize = gtk_tree_view_finalize;
 515
 516   /* GtkObject signals */
 517   object_class->destroy = gtk_tree_view_destroy;
 518
 519   /* GtkWidget signals */
 520   widget_class->map = gtk_tree_view_map;
 521   widget_class->realize = gtk_tree_view_realize;
 522   widget_class->unrealize = gtk_tree_view_unrealize;
 523   widget_class->size_request = gtk_tree_view_size_request;
 524   widget_class->size_allocate = gtk_tree_view_size_allocate;
 525   widget_class->button_press_event = gtk_tree_view_button_press;
 526   widget_class->button_release_event = gtk_tree_view_button_release;
 527   widget_class->grab_broken_event = gtk_tree_view_grab_broken;
 528   /*widget_class->configure_event = gtk_tree_view_configure;*/
 529   widget_class->motion_notify_event = gtk_tree_view_motion;
 530   widget_class->draw = gtk_tree_view_draw;
 531   widget_class->key_press_event = gtk_tree_view_key_press;
 532   widget_class->key_release_event = gtk_tree_view_key_release;
 533   widget_class->enter_notify_event = gtk_tree_view_enter_notify;
 534   widget_class->leave_notify_event = gtk_tree_view_leave_notify;
 535   widget_class->focus_out_event = gtk_tree_view_focus_out;
 536   widget_class->drag_begin = gtk_tree_view_drag_begin;
 537   widget_class->drag_end = gtk_tree_view_drag_end;
 538   widget_class->drag_data_get = gtk_tree_view_drag_data_get;
 539   widget_class->drag_data_delete = gtk_tree_view_drag_data_delete;
 540   widget_class->drag_leave = gtk_tree_view_drag_leave;
 541   widget_class->drag_motion = gtk_tree_view_drag_motion;
 542   widget_class->drag_drop = gtk_tree_view_drag_drop;
 543   widget_class->drag_data_received = gtk_tree_view_drag_data_received;
 544   widget_class->focus = gtk_tree_view_focus;
 545   widget_class->grab_focus = gtk_tree_view_grab_focus;
 546   widget_class->style_set = gtk_tree_view_style_set;
 547   widget_class->grab_notify = gtk_tree_view_grab_notify;
 548   widget_class->state_changed = gtk_tree_view_state_changed;
 549
 550   /* GtkContainer signals */
 551   container_class->remove = gtk_tree_view_remove;
 552   container_class->forall = gtk_tree_view_forall;
 553   container_class->set_focus_child = gtk_tree_view_set_focus_child;
 554
 555   class->set_scroll_adjustments = gtk_tree_view_set_adjustments;
 556   class->move_cursor = gtk_tree_view_real_move_cursor;
 557   class->select_all = gtk_tree_view_real_select_all;
 558   class->unselect_all = gtk_tree_view_real_unselect_all;
 559   class->select_cursor_row = gtk_tree_view_real_select_cursor_row;
 560   class->toggle_cursor_row = gtk_tree_view_real_toggle_cursor_row;
 561   class->expand_collapse_cursor_row = gtk_tree_view_real_expand_collapse_cursor_row;
 562   class->select_cursor_parent = gtk_tree_view_real_select_cursor_parent;
 563   class->start_interactive_search = gtk_tree_view_start_interactive_search;
 564
 565   /* Properties */
 566
 567   g_object_class_install_property (o_class,
 568                                    PROP_MODEL,
 569                                    g_param_spec_object ("model",
 570                                                         P_("TreeView Model"),
 571                                                         P_("The model for the tree view"),
 572                                                         GTK_TYPE_TREE_MODEL,
 573                                                         GTK_PARAM_READWRITE));
 574
 575   g_object_class_install_property (o_class,
 576                                    PROP_HADJUSTMENT,
 577                                    g_param_spec_object ("hadjustment",
 578                                                         P_("Horizontal Adjustment"),
 579                                                         P_("Horizontal Adjustment for the widget"),
 580                                                         GTK_TYPE_ADJUSTMENT,
 581                                                         GTK_PARAM_READWRITE));
 582
 583   g_object_class_install_property (o_class,
 584                                    PROP_VADJUSTMENT,
 585                                    g_param_spec_object ("vadjustment",
 586                                                         P_("Vertical Adjustment"),
 587                                                         P_("Vertical Adjustment for the widget"),
 588                                                         GTK_TYPE_ADJUSTMENT,
 589                                                         GTK_PARAM_READWRITE));
 590
 591   g_object_class_install_property (o_class,
 592                                    PROP_HEADERS_VISIBLE,
 593                                    g_param_spec_boolean ("headers-visible",
 594                                                          P_("Headers Visible"),
 595                                                          P_("Show the column header buttons"),
 596                                                          TRUE,
 597                                                          GTK_PARAM_READWRITE));
 598
 599   g_object_class_install_property (o_class,
 600                                    PROP_HEADERS_CLICKABLE,
 601                                    g_param_spec_boolean ("headers-clickable",
 602                                                          P_("Headers Clickable"),
 603                                                          P_("Column headers respond to click events"),
 604                                                          TRUE,
 605                                                          GTK_PARAM_READWRITE));
 606
 607   g_object_class_install_property (o_class,
 608                                    PROP_EXPANDER_COLUMN,
 609                                    g_param_spec_object ("expander-column",
 610                                                         P_("Expander Column"),
 611                                                         P_("Set the column for the expander column"),
 612                                                         GTK_TYPE_TREE_VIEW_COLUMN,
 613                                                         GTK_PARAM_READWRITE));
 614
 615   g_object_class_install_property (o_class,
 616                                    PROP_REORDERABLE,
 617                                    g_param_spec_boolean ("reorderable",
 618                                                          P_("Reorderable"),
 619                                                          P_("View is reorderable"),
 620                                                          FALSE,
 621                                                          GTK_PARAM_READWRITE));
 622
 623   g_object_class_install_property (o_class,
 624                                    PROP_RULES_HINT,
 625                                    g_param_spec_boolean ("rules-hint",
 626                                                          P_("Rules Hint"),
 627                                                          P_("Set a hint to the theme engine to draw rows in alternating colors"),
 628                                                          FALSE,
 629                                                          GTK_PARAM_READWRITE));
 630
 631     g_object_class_install_property (o_class,
 632                                      PROP_ENABLE_SEARCH,
 633                                      g_param_spec_boolean ("enable-search",
 634                                                            P_("Enable Search"),
 635                                                            P_("View allows user to search through columns interactively"),
 636                                                            TRUE,
 637                                                            GTK_PARAM_READWRITE));
 638
 639     g_object_class_install_property (o_class,
 640                                      PROP_SEARCH_COLUMN,
 641                                      g_param_spec_int ("search-column",
 642                                                        P_("Search Column"),
 643                                                        P_("Model column to search through during interactive search"),
 644                                                        -1,
 645                                                        G_MAXINT,
 646                                                        -1,
 647                                                        GTK_PARAM_READWRITE));
 648
 649     /**
 650      * GtkTreeView:fixed-height-mode:
 651      *
 652      * Setting the ::fixed-height-mode property to %TRUE speeds up
 653      * #GtkTreeView by assuming that all rows have the same height.
 654      * Only enable this option if all rows are the same height.
 655      * Please see gtk_tree_view_set_fixed_height_mode() for more
 656      * information on this option.
 657      *
 658      * Since: 2.4
 659      **/
 660     g_object_class_install_property (o_class,
 661                                      PROP_FIXED_HEIGHT_MODE,
 662                                      g_param_spec_boolean ("fixed-height-mode",
 663                                                            P_("Fixed Height Mode"),
 664                                                            P_("Speeds up GtkTreeView by assuming that all rows have the same height"),
 665                                                            FALSE,
 666                                                            GTK_PARAM_READWRITE));
 667
 668     /**
 669      * GtkTreeView:hover-selection:
 670      *
 671      * Enables or disables the hover selection mode of @tree_view.
 672      * Hover selection makes the selected row follow the pointer.
 673      * Currently, this works only for the selection modes
 674      * %GTK_SELECTION_SINGLE and %GTK_SELECTION_BROWSE.
 675      *
 676      * This mode is primarily intended for treeviews in popups, e.g.
 677      * in #GtkComboBox or #GtkEntryCompletion.
 678      *
 679      * Since: 2.6
 680      */
 681     g_object_class_install_property (o_class,
 682                                      PROP_HOVER_SELECTION,
 683                                      g_param_spec_boolean ("hover-selection",
 684                                                            P_("Hover Selection"),
 685                                                            P_("Whether the selection should follow the pointer"),
 686                                                            FALSE,
 687                                                            GTK_PARAM_READWRITE));
 688
 689     /**
 690      * GtkTreeView:hover-expand:
 691      *
 692      * Enables or disables the hover expansion mode of @tree_view.
 693      * Hover expansion makes rows expand or collapse if the pointer moves
 694      * over them.
 695      *
 696      * This mode is primarily intended for treeviews in popups, e.g.
 697      * in #GtkComboBox or #GtkEntryCompletion.
 698      *
 699      * Since: 2.6
 700      */
 701     g_object_class_install_property (o_class,
 702                                      PROP_HOVER_EXPAND,
 703                                      g_param_spec_boolean ("hover-expand",
 704                                                            P_("Hover Expand"),
 705                                                            P_("Whether rows should be expanded/collapsed when the pointer moves over them"),
 706                                                            FALSE,
 707                                                            GTK_PARAM_READWRITE));
 708
 709     /**
 710      * GtkTreeView:show-expanders:
 711      *
 712      * %TRUE if the view has expanders.
 713      *
 714      * Since: 2.12
 715      */
 716     g_object_class_install_property (o_class,
 717                                      PROP_SHOW_EXPANDERS,
 718                                      g_param_spec_boolean ("show-expanders",
 719                                                            P_("Show Expanders"),
 720                                                            P_("View has expanders"),
 721                                                            TRUE,
 722                                                            GTK_PARAM_READWRITE));
 723
 724     /**
 725      * GtkTreeView:level-indentation:
 726      *
 727      * Extra indentation for each level.
 728      *
 729      * Since: 2.12
 730      */
 731     g_object_class_install_property (o_class,
 732                                      PROP_LEVEL_INDENTATION,
 733                                      g_param_spec_int ("level-indentation",
 734                                                        P_("Level Indentation"),
 735                                                        P_("Extra indentation for each level"),
 736                                                        0,
 737                                                        G_MAXINT,
 738                                                        0,
 739                                                        GTK_PARAM_READWRITE));
 740
 741     g_object_class_install_property (o_class,
 742                                      PROP_RUBBER_BANDING,
 743                                      g_param_spec_boolean ("rubber-banding",
 744                                                            P_("Rubber Banding"),
 745                                                            P_("Whether to enable selection of multiple items by dragging the mouse pointer"),
 746                                                            FALSE,
 747                                                            GTK_PARAM_READWRITE));
 748
 749     g_object_class_install_property (o_class,
 750                                      PROP_ENABLE_GRID_LINES,
 751                                      g_param_spec_enum ("enable-grid-lines",
 752                                                         P_("Enable Grid Lines"),
 753                                                         P_("Whether grid lines should be drawn in the tree view"),
 754                                                         GTK_TYPE_TREE_VIEW_GRID_LINES,
 755                                                         GTK_TREE_VIEW_GRID_LINES_NONE,
 756                                                         GTK_PARAM_READWRITE));
 757
 758     g_object_class_install_property (o_class,
 759                                      PROP_ENABLE_TREE_LINES,
 760                                      g_param_spec_boolean ("enable-tree-lines",
 761                                                            P_("Enable Tree Lines"),
 762                                                            P_("Whether tree lines should be drawn in the tree view"),
 763                                                            FALSE,
 764                                                            GTK_PARAM_READWRITE));
 765
 766     g_object_class_install_property (o_class,
 767                                      PROP_TOOLTIP_COLUMN,
 768                                      g_param_spec_int ("tooltip-column",
 769                                                        P_("Tooltip Column"),
 770                                                        P_("The column in the model containing the tooltip texts for the rows"),
 771                                                        -1,
 772                                                        G_MAXINT,
 773                                                        -1,
 774                                                        GTK_PARAM_READWRITE));
 775
 776   /* Style properties */
 777 #define _TREE_VIEW_EXPANDER_SIZE 12
 778 #define _TREE_VIEW_VERTICAL_SEPARATOR 2
 779 #define _TREE_VIEW_HORIZONTAL_SEPARATOR 2
 780
 781   gtk_widget_class_install_style_property (widget_class,
 782                                            g_param_spec_int ("expander-size",
 783                                                              P_("Expander Size"),
 784                                                              P_("Size of the expander arrow"),
 785                                                              0,
 786                                                              G_MAXINT,
 787                                                              _TREE_VIEW_EXPANDER_SIZE,
 788                                                              GTK_PARAM_READABLE));
 789
 790   gtk_widget_class_install_style_property (widget_class,
 791                                            g_param_spec_int ("vertical-separator",
 792                                                              P_("Vertical Separator Width"),
 793                                                              P_("Vertical space between cells.  Must be an even number"),
 794                                                              0,
 795                                                              G_MAXINT,
 796                                                              _TREE_VIEW_VERTICAL_SEPARATOR,
 797                                                              GTK_PARAM_READABLE));
 798
 799   gtk_widget_class_install_style_property (widget_class,
 800                                            g_param_spec_int ("horizontal-separator",
 801                                                              P_("Horizontal Separator Width"),
 802                                                              P_("Horizontal space between cells.  Must be an even number"),
 803                                                              0,
 804                                                              G_MAXINT,
 805                                                              _TREE_VIEW_HORIZONTAL_SEPARATOR,
 806                                                              GTK_PARAM_READABLE));
 807
 808   gtk_widget_class_install_style_property (widget_class,
 809                                            g_param_spec_boolean ("allow-rules",
 810                                                                  P_("Allow Rules"),
 811                                                                  P_("Allow drawing of alternating color rows"),
 812                                                                  TRUE,
 813                                                                  GTK_PARAM_READABLE));
 814
 815   gtk_widget_class_install_style_property (widget_class,
 816                                            g_param_spec_boolean ("indent-expanders",
 817                                                                  P_("Indent Expanders"),
 818                                                                  P_("Make the expanders indented"),
 819                                                                  TRUE,
 820                                                                  GTK_PARAM_READABLE));
 821
 822   gtk_widget_class_install_style_property (widget_class,
 823                                            g_param_spec_boxed ("even-row-color",
 824                                                                P_("Even Row Color"),
 825                                                                P_("Color to use for even rows"),
 826                                                                GDK_TYPE_COLOR,
 827                                                                GTK_PARAM_READABLE));
 828
 829   gtk_widget_class_install_style_property (widget_class,
 830                                            g_param_spec_boxed ("odd-row-color",
 831                                                                P_("Odd Row Color"),
 832                                                                P_("Color to use for odd rows"),
 833                                                                GDK_TYPE_COLOR,
 834                                                                GTK_PARAM_READABLE));
 835
 836   gtk_widget_class_install_style_property (widget_class,
 837                                            g_param_spec_int ("grid-line-width",
 838                                                              P_("Grid line width"),
 839                                                              P_("Width, in pixels, of the tree view grid lines"),
 840                                                              0, G_MAXINT, 1,
 841                                                              GTK_PARAM_READABLE));
 842
 843   gtk_widget_class_install_style_property (widget_class,
 844                                            g_param_spec_int ("tree-line-width",
 845                                                              P_("Tree line width"),
 846                                                              P_("Width, in pixels, of the tree view lines"),
 847                                                              0, G_MAXINT, 1,
 848                                                              GTK_PARAM_READABLE));
 849
 850   gtk_widget_class_install_style_property (widget_class,
 851                                            g_param_spec_string ("grid-line-pattern",
 852                                                                 P_("Grid line pattern"),
 853                                                                 P_("Dash pattern used to draw the tree view grid lines"),
 854                                                                 "\1\1",
 855                                                                 GTK_PARAM_READABLE));
 856
 857   gtk_widget_class_install_style_property (widget_class,
 858                                            g_param_spec_string ("tree-line-pattern",
 859                                                                 P_("Tree line pattern"),
 860                                                                 P_("Dash pattern used to draw the tree view lines"),
 861                                                                 "\1\1",
 862                                                                 GTK_PARAM_READABLE));
 863
 864   /* Signals */
 865   /**
 866    * GtkTreeView::set-scroll-adjustments
 867    * @horizontal: the horizontal #GtkAdjustment
 868    * @vertical: the vertical #GtkAdjustment
 869    *
 870    * Set the scroll adjustments for the tree view. Usually scrolled containers
 871    * like #GtkScrolledWindow will emit this signal to connect two instances
 872    * of #GtkScrollbar to the scroll directions of the #GtkTreeView.
 873    */
 874   widget_class->set_scroll_adjustments_signal =
 875     g_signal_new (I_("set-scroll-adjustments"),
 876                   G_TYPE_FROM_CLASS (o_class),
 877                   G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
 878                   G_STRUCT_OFFSET (GtkTreeViewClass, set_scroll_adjustments),
 879                   NULL, NULL,
 880                   _gtk_marshal_VOID__OBJECT_OBJECT,
 881                   G_TYPE_NONE, 2,
 882                   GTK_TYPE_ADJUSTMENT,
 883                   GTK_TYPE_ADJUSTMENT);
 884
 885   /**
 886    * GtkTreeView::row-activated:
 887    * @tree_view: the object on which the signal is emitted
 888    * @path: the #GtkTreePath for the activated row
 889    * @column: the #GtkTreeViewColumn in which the activation occurred
 890    *
 891    * The "row-activated" signal is emitted when the method
 892    * gtk_tree_view_row_activated() is called or the user double clicks
 893    * a treeview row. It is also emitted when a non-editable row is
 894    * selected and one of the keys: Space, Shift+Space, Return or
 895    * Enter is pressed.
 896    *
 897    * For selection handling refer to the <link linkend="TreeWidget">tree
 898    * widget conceptual overview</link> as well as #GtkTreeSelection.
 899    */
 900   tree_view_signals[ROW_ACTIVATED] =
 901     g_signal_new (I_("row-activated"),
 902                   G_TYPE_FROM_CLASS (o_class),
 903                   G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
 904                   G_STRUCT_OFFSET (GtkTreeViewClass, row_activated),
 905                   NULL, NULL,
 906                   _gtk_marshal_VOID__BOXED_OBJECT,
 907                   G_TYPE_NONE, 2,
 908                   GTK_TYPE_TREE_PATH,
 909                   GTK_TYPE_TREE_VIEW_COLUMN);
 910
 911   /**
 912    * GtkTreeView::test-expand-row:
 913    * @tree_view: the object on which the signal is emitted
 914    * @iter: the tree iter of the row to expand
 915    * @path: a tree path that points to the row
 916    *
 917    * The given row is about to be expanded (show its children nodes). Use this
 918    * signal if you need to control the expandability of individual rows.
 919    *
 920    * Returns: %FALSE to allow expansion, %TRUE to reject
 921    */
 922   tree_view_signals[TEST_EXPAND_ROW] =
 923     g_signal_new (I_("test-expand-row"),
 924                   G_TYPE_FROM_CLASS (o_class),
 925                   G_SIGNAL_RUN_LAST,
 926                   G_STRUCT_OFFSET (GtkTreeViewClass, test_expand_row),
 927                   _gtk_boolean_handled_accumulator, NULL,
 928                   _gtk_marshal_BOOLEAN__BOXED_BOXED,
 929                   G_TYPE_BOOLEAN, 2,
 930                   GTK_TYPE_TREE_ITER,
 931                   GTK_TYPE_TREE_PATH);
 932
 933   /**
 934    * GtkTreeView::test-collapse-row:
 935    * @tree_view: the object on which the signal is emitted
 936    * @iter: the tree iter of the row to collapse
 937    * @path: a tree path that points to the row
 938    *
 939    * The given row is about to be collapsed (hide its children nodes). Use this
 940    * signal if you need to control the collapsibility of individual rows.
 941    *
 942    * Returns: %FALSE to allow collapsing, %TRUE to reject
 943    */
 944   tree_view_signals[TEST_COLLAPSE_ROW] =
 945     g_signal_new (I_("test-collapse-row"),
 946                   G_TYPE_FROM_CLASS (o_class),
 947                   G_SIGNAL_RUN_LAST,
 948                   G_STRUCT_OFFSET (GtkTreeViewClass, test_collapse_row),
 949                   _gtk_boolean_handled_accumulator, NULL,
 950                   _gtk_marshal_BOOLEAN__BOXED_BOXED,
 951                   G_TYPE_BOOLEAN, 2,
 952                   GTK_TYPE_TREE_ITER,
 953                   GTK_TYPE_TREE_PATH);
 954
 955   /**
 956    * GtkTreeView::row-expanded:
 957    * @tree_view: the object on which the signal is emitted
 958    * @iter: the tree iter of the expanded row
 959    * @path: a tree path that points to the row
 960    *
 961    * The given row has been expanded (child nodes are shown).
 962    */
 963   tree_view_signals[ROW_EXPANDED] =
 964     g_signal_new (I_("row-expanded"),
 965                   G_TYPE_FROM_CLASS (o_class),
 966                   G_SIGNAL_RUN_LAST,
 967                   G_STRUCT_OFFSET (GtkTreeViewClass, row_expanded),
 968                   NULL, NULL,
 969                   _gtk_marshal_VOID__BOXED_BOXED,
 970                   G_TYPE_NONE, 2,
 971                   GTK_TYPE_TREE_ITER,
 972                   GTK_TYPE_TREE_PATH);
 973
 974   /**
 975    * GtkTreeView::row-collapsed:
 976    * @tree_view: the object on which the signal is emitted
 977    * @iter: the tree iter of the collapsed row
 978    * @path: a tree path that points to the row
 979    *
 980    * The given row has been collapsed (child nodes are hidden).
 981    */
 982   tree_view_signals[ROW_COLLAPSED] =
 983     g_signal_new (I_("row-collapsed"),
 984                   G_TYPE_FROM_CLASS (o_class),
 985                   G_SIGNAL_RUN_LAST,
 986                   G_STRUCT_OFFSET (GtkTreeViewClass, row_collapsed),
 987                   NULL, NULL,
 988                   _gtk_marshal_VOID__BOXED_BOXED,
 989                   G_TYPE_NONE, 2,
 990                   GTK_TYPE_TREE_ITER,
 991                   GTK_TYPE_TREE_PATH);
 992
 993   /**
 994    * GtkTreeView::columns-changed:
 995    * @tree_view: the object on which the signal is emitted
 996    *
 997    * The number of columns of the treeview has changed.
 998    */
 999   tree_view_signals[COLUMNS_CHANGED] =
1000     g_signal_new (I_("columns-changed"),
1001                   G_TYPE_FROM_CLASS (o_class),
1002                   G_SIGNAL_RUN_LAST,
1003                   G_STRUCT_OFFSET (GtkTreeViewClass, columns_changed),
1004                   NULL, NULL,
1005                   _gtk_marshal_VOID__VOID,
1006                   G_TYPE_NONE, 0);
1007
1008   /**
1009    * GtkTreeView::cursor-changed:
1010    * @tree_view: the object on which the signal is emitted
1011    *
1012    * The position of the cursor (focused cell) has changed.
1013    */
1014   tree_view_signals[CURSOR_CHANGED] =
1015     g_signal_new (I_("cursor-changed"),
1016                   G_TYPE_FROM_CLASS (o_class),
1017                   G_SIGNAL_RUN_LAST,
1018                   G_STRUCT_OFFSET (GtkTreeViewClass, cursor_changed),
1019                   NULL, NULL,
1020                   _gtk_marshal_VOID__VOID,
1021                   G_TYPE_NONE, 0);
1022
1023   tree_view_signals[MOVE_CURSOR] =
1024     g_signal_new (I_("move-cursor"),
1025                   G_TYPE_FROM_CLASS (object_class),
1026                   G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
1027                   G_STRUCT_OFFSET (GtkTreeViewClass, move_cursor),
1028                   NULL, NULL,
1029                   _gtk_marshal_BOOLEAN__ENUM_INT,
1030                   G_TYPE_BOOLEAN, 2,
1031                   GTK_TYPE_MOVEMENT_STEP,
1032                   G_TYPE_INT);
1033
1034   tree_view_signals[SELECT_ALL] =
1035     g_signal_new (I_("select-all"),
1036                   G_TYPE_FROM_CLASS (object_class),
1037                   G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
1038                   G_STRUCT_OFFSET (GtkTreeViewClass, select_all),
1039                   NULL, NULL,
1040                   _gtk_marshal_BOOLEAN__VOID,
1041                   G_TYPE_BOOLEAN, 0);
1042
1043   tree_view_signals[UNSELECT_ALL] =
1044     g_signal_new (I_("unselect-all"),
1045                   G_TYPE_FROM_CLASS (object_class),
1046                   G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
1047                   G_STRUCT_OFFSET (GtkTreeViewClass, unselect_all),
1048                   NULL, NULL,
1049                   _gtk_marshal_BOOLEAN__VOID,
1050                   G_TYPE_BOOLEAN, 0);
1051
1052   tree_view_signals[SELECT_CURSOR_ROW] =
1053     g_signal_new (I_("select-cursor-row"),
1054                   G_TYPE_FROM_CLASS (object_class),
1055                   G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
1056                   G_STRUCT_OFFSET (GtkTreeViewClass, select_cursor_row),
1057                   NULL, NULL,
1058                   _gtk_marshal_BOOLEAN__BOOLEAN,
1059                   G_TYPE_BOOLEAN, 1,
1060                   G_TYPE_BOOLEAN);
1061
1062   tree_view_signals[TOGGLE_CURSOR_ROW] =
1063     g_signal_new (I_("toggle-cursor-row"),
1064                   G_TYPE_FROM_CLASS (object_class),
1065                   G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
1066                   G_STRUCT_OFFSET (GtkTreeViewClass, toggle_cursor_row),
1067                   NULL, NULL,
1068                   _gtk_marshal_BOOLEAN__VOID,
1069                   G_TYPE_BOOLEAN, 0);
1070
1071   tree_view_signals[EXPAND_COLLAPSE_CURSOR_ROW] =
1072     g_signal_new (I_("expand-collapse-cursor-row"),
1073                   G_TYPE_FROM_CLASS (object_class),
1074                   G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
1075                   G_STRUCT_OFFSET (GtkTreeViewClass, expand_collapse_cursor_row),
1076                   NULL, NULL,
1077                   _gtk_marshal_BOOLEAN__BOOLEAN_BOOLEAN_BOOLEAN,
1078                   G_TYPE_BOOLEAN, 3,
1079                   G_TYPE_BOOLEAN,
1080                   G_TYPE_BOOLEAN,
1081                   G_TYPE_BOOLEAN);
1082
1083   tree_view_signals[SELECT_CURSOR_PARENT] =
1084     g_signal_new (I_("select-cursor-parent"),
1085                   G_TYPE_FROM_CLASS (object_class),
1086                   G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
1087                   G_STRUCT_OFFSET (GtkTreeViewClass, select_cursor_parent),
1088                   NULL, NULL,
1089                   _gtk_marshal_BOOLEAN__VOID,
1090                   G_TYPE_BOOLEAN, 0);
1091
1092   tree_view_signals[START_INTERACTIVE_SEARCH] =
1093     g_signal_new (I_("start-interactive-search"),
1094                   G_TYPE_FROM_CLASS (object_class),
1095                   G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
1096                   G_STRUCT_OFFSET (GtkTreeViewClass, start_interactive_search),
1097                   NULL, NULL,
1098                   _gtk_marshal_BOOLEAN__VOID,
1099                   G_TYPE_BOOLEAN, 0);
1100
1101   /* Key bindings */
1102   gtk_tree_view_add_move_binding (binding_set, GDK_KEY_Up, 0, TRUE,
1103                                   GTK_MOVEMENT_DISPLAY_LINES, -1);
1104   gtk_tree_view_add_move_binding (binding_set, GDK_KEY_KP_Up, 0, TRUE,
1105                                   GTK_MOVEMENT_DISPLAY_LINES, -1);
1106
1107   gtk_tree_view_add_move_binding (binding_set, GDK_KEY_Down, 0, TRUE,
1108                                   GTK_MOVEMENT_DISPLAY_LINES, 1);
1109   gtk_tree_view_add_move_binding (binding_set, GDK_KEY_KP_Down, 0, TRUE,
1110                                   GTK_MOVEMENT_DISPLAY_LINES, 1);
1111
1112   gtk_tree_view_add_move_binding (binding_set, GDK_KEY_p, GDK_CONTROL_MASK, FALSE,
1113                                   GTK_MOVEMENT_DISPLAY_LINES, -1);
1114
1115   gtk_tree_view_add_move_binding (binding_set, GDK_KEY_n, GDK_CONTROL_MASK, FALSE,
1116                                   GTK_MOVEMENT_DISPLAY_LINES, 1);
1117
1118   gtk_tree_view_add_move_binding (binding_set, GDK_KEY_Home, 0, TRUE,
1119                                   GTK_MOVEMENT_BUFFER_ENDS, -1);
1120   gtk_tree_view_add_move_binding (binding_set, GDK_KEY_KP_Home, 0, TRUE,
1121                                   GTK_MOVEMENT_BUFFER_ENDS, -1);
1122
1123   gtk_tree_view_add_move_binding (binding_set, GDK_KEY_End, 0, TRUE,
1124                                   GTK_MOVEMENT_BUFFER_ENDS, 1);
1125   gtk_tree_view_add_move_binding (binding_set, GDK_KEY_KP_End, 0, TRUE,
1126                                   GTK_MOVEMENT_BUFFER_ENDS, 1);
1127
1128   gtk_tree_view_add_move_binding (binding_set, GDK_KEY_Page_Up, 0, TRUE,
1129                                   GTK_MOVEMENT_PAGES, -1);
1130   gtk_tree_view_add_move_binding (binding_set, GDK_KEY_KP_Page_Up, 0, TRUE,
1131                                   GTK_MOVEMENT_PAGES, -1);
1132
1133   gtk_tree_view_add_move_binding (binding_set, GDK_KEY_Page_Down, 0, TRUE,
1134                                   GTK_MOVEMENT_PAGES, 1);
1135   gtk_tree_view_add_move_binding (binding_set, GDK_KEY_KP_Page_Down, 0, TRUE,
1136                                   GTK_MOVEMENT_PAGES, 1);
1137
1138
1139   gtk_binding_entry_add_signal (binding_set, GDK_KEY_Right, 0, "move-cursor", 2,
1140                                 G_TYPE_ENUM, GTK_MOVEMENT_VISUAL_POSITIONS,
1141                                 G_TYPE_INT, 1);
1142
1143   gtk_binding_entry_add_signal (binding_set, GDK_KEY_Left, 0, "move-cursor", 2,
1144                                 G_TYPE_ENUM, GTK_MOVEMENT_VISUAL_POSITIONS,
1145                                 G_TYPE_INT, -1);
1146
1147   gtk_binding_entry_add_signal (binding_set, GDK_KEY_KP_Right, 0, "move-cursor", 2,
1148                                 G_TYPE_ENUM, GTK_MOVEMENT_VISUAL_POSITIONS,
1149                                 G_TYPE_INT, 1);
1150
1151   gtk_binding_entry_add_signal (binding_set, GDK_KEY_KP_Left, 0, "move-cursor", 2,
1152                                 G_TYPE_ENUM, GTK_MOVEMENT_VISUAL_POSITIONS,
1153                                 G_TYPE_INT, -1);
1154
1155   gtk_binding_entry_add_signal (binding_set, GDK_KEY_Right, GDK_CONTROL_MASK,
1156                                 "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_KEY_Left, 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_KEY_KP_Right, 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_KEY_KP_Left, 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_KEY_space, GDK_CONTROL_MASK, "toggle-cursor-row", 0);
1176   gtk_binding_entry_add_signal (binding_set, GDK_KEY_KP_Space, GDK_CONTROL_MASK, "toggle-cursor-row", 0);
1177
1178   gtk_binding_entry_add_signal (binding_set, GDK_KEY_a, GDK_CONTROL_MASK, "select-all", 0);
1179   gtk_binding_entry_add_signal (binding_set, GDK_KEY_slash, GDK_CONTROL_MASK, "select-all", 0);
1180
1181   gtk_binding_entry_add_signal (binding_set, GDK_KEY_A, GDK_CONTROL_MASK | GDK_SHIFT_MASK, "unselect-all", 0);
1182   gtk_binding_entry_add_signal (binding_set, GDK_KEY_backslash, GDK_CONTROL_MASK, "unselect-all", 0);
1183
1184   gtk_binding_entry_add_signal (binding_set, GDK_KEY_space, GDK_SHIFT_MASK, "select-cursor-row", 1,
1185                                 G_TYPE_BOOLEAN, TRUE);
1186   gtk_binding_entry_add_signal (binding_set, GDK_KEY_KP_Space, GDK_SHIFT_MASK, "select-cursor-row", 1,
1187                                 G_TYPE_BOOLEAN, TRUE);
1188
1189   gtk_binding_entry_add_signal (binding_set, GDK_KEY_space, 0, "select-cursor-row", 1,
1190                                 G_TYPE_BOOLEAN, TRUE);
1191   gtk_binding_entry_add_signal (binding_set, GDK_KEY_KP_Space, 0, "select-cursor-row", 1,
1192                                 G_TYPE_BOOLEAN, TRUE);
1193   gtk_binding_entry_add_signal (binding_set, GDK_KEY_Return, 0, "select-cursor-row", 1,
1194                                 G_TYPE_BOOLEAN, TRUE);
1195   gtk_binding_entry_add_signal (binding_set, GDK_KEY_ISO_Enter, 0, "select-cursor-row", 1,
1196                                 G_TYPE_BOOLEAN, TRUE);
1197   gtk_binding_entry_add_signal (binding_set, GDK_KEY_KP_Enter, 0, "select-cursor-row", 1,
1198                                 G_TYPE_BOOLEAN, TRUE);
1199
1200   /* expand and collapse rows */
1201   gtk_binding_entry_add_signal (binding_set, GDK_KEY_plus, 0, "expand-collapse-cursor-row", 3,
1202                                 G_TYPE_BOOLEAN, TRUE,
1203                                 G_TYPE_BOOLEAN, TRUE,
1204                                 G_TYPE_BOOLEAN, FALSE);
1205
1206   gtk_binding_entry_add_signal (binding_set, GDK_KEY_asterisk, 0,
1207                                 "expand-collapse-cursor-row", 3,
1208                                 G_TYPE_BOOLEAN, TRUE,
1209                                 G_TYPE_BOOLEAN, TRUE,
1210                                 G_TYPE_BOOLEAN, TRUE);
1211   gtk_binding_entry_add_signal (binding_set, GDK_KEY_KP_Multiply, 0,
1212                                 "expand-collapse-cursor-row", 3,
1213                                 G_TYPE_BOOLEAN, TRUE,
1214                                 G_TYPE_BOOLEAN, TRUE,
1215                                 G_TYPE_BOOLEAN, TRUE);
1216
1217   gtk_binding_entry_add_signal (binding_set, GDK_KEY_slash, 0,
1218                                 "expand-collapse-cursor-row", 3,
1219                                 G_TYPE_BOOLEAN, TRUE,
1220                                 G_TYPE_BOOLEAN, FALSE,
1221                                 G_TYPE_BOOLEAN, FALSE);
1222   gtk_binding_entry_add_signal (binding_set, GDK_KEY_KP_Divide, 0,
1223                                 "expand-collapse-cursor-row", 3,
1224                                 G_TYPE_BOOLEAN, TRUE,
1225                                 G_TYPE_BOOLEAN, FALSE,
1226                                 G_TYPE_BOOLEAN, FALSE);
1227
1228   /* Not doable on US keyboards */
1229   gtk_binding_entry_add_signal (binding_set, GDK_KEY_plus, GDK_SHIFT_MASK, "expand-collapse-cursor-row", 3,
1230                                 G_TYPE_BOOLEAN, TRUE,
1231                                 G_TYPE_BOOLEAN, TRUE,
1232                                 G_TYPE_BOOLEAN, TRUE);
1233   gtk_binding_entry_add_signal (binding_set, GDK_KEY_KP_Add, 0, "expand-collapse-cursor-row", 3,
1234                                 G_TYPE_BOOLEAN, TRUE,
1235                                 G_TYPE_BOOLEAN, TRUE,
1236                                 G_TYPE_BOOLEAN, FALSE);
1237   gtk_binding_entry_add_signal (binding_set, GDK_KEY_KP_Add, GDK_SHIFT_MASK, "expand-collapse-cursor-row", 3,
1238                                 G_TYPE_BOOLEAN, TRUE,
1239                                 G_TYPE_BOOLEAN, TRUE,
1240                                 G_TYPE_BOOLEAN, TRUE);
1241   gtk_binding_entry_add_signal (binding_set, GDK_KEY_KP_Add, GDK_SHIFT_MASK, "expand-collapse-cursor-row", 3,
1242                                 G_TYPE_BOOLEAN, TRUE,
1243                                 G_TYPE_BOOLEAN, TRUE,
1244                                 G_TYPE_BOOLEAN, TRUE);
1245   gtk_binding_entry_add_signal (binding_set, GDK_KEY_Right, GDK_SHIFT_MASK,
1246                                 "expand-collapse-cursor-row", 3,
1247                                 G_TYPE_BOOLEAN, FALSE,
1248                                 G_TYPE_BOOLEAN, TRUE,
1249                                 G_TYPE_BOOLEAN, TRUE);
1250   gtk_binding_entry_add_signal (binding_set, GDK_KEY_KP_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_KEY_Right,
1256                                 GDK_CONTROL_MASK | GDK_SHIFT_MASK,
1257                                 "expand-collapse-cursor-row", 3,
1258                                 G_TYPE_BOOLEAN, FALSE,
1259                                 G_TYPE_BOOLEAN, TRUE,
1260                                 G_TYPE_BOOLEAN, TRUE);
1261   gtk_binding_entry_add_signal (binding_set, GDK_KEY_KP_Right,
1262                                 GDK_CONTROL_MASK | GDK_SHIFT_MASK,
1263                                 "expand-collapse-cursor-row", 3,
1264                                 G_TYPE_BOOLEAN, FALSE,
1265                                 G_TYPE_BOOLEAN, TRUE,
1266                                 G_TYPE_BOOLEAN, TRUE);
1267
1268   gtk_binding_entry_add_signal (binding_set, GDK_KEY_minus, 0, "expand-collapse-cursor-row", 3,
1269                                 G_TYPE_BOOLEAN, TRUE,
1270                                 G_TYPE_BOOLEAN, FALSE,
1271                                 G_TYPE_BOOLEAN, FALSE);
1272   gtk_binding_entry_add_signal (binding_set, GDK_KEY_minus, GDK_SHIFT_MASK, "expand-collapse-cursor-row", 3,
1273                                 G_TYPE_BOOLEAN, TRUE,
1274                                 G_TYPE_BOOLEAN, FALSE,
1275                                 G_TYPE_BOOLEAN, TRUE);
1276   gtk_binding_entry_add_signal (binding_set, GDK_KEY_KP_Subtract, 0, "expand-collapse-cursor-row", 3,
1277                                 G_TYPE_BOOLEAN, TRUE,
1278                                 G_TYPE_BOOLEAN, FALSE,
1279                                 G_TYPE_BOOLEAN, FALSE);
1280   gtk_binding_entry_add_signal (binding_set, GDK_KEY_KP_Subtract, GDK_SHIFT_MASK, "expand-collapse-cursor-row", 3,
1281                                 G_TYPE_BOOLEAN, TRUE,
1282                                 G_TYPE_BOOLEAN, FALSE,
1283                                 G_TYPE_BOOLEAN, TRUE);
1284   gtk_binding_entry_add_signal (binding_set, GDK_KEY_Left, GDK_SHIFT_MASK,
1285                                 "expand-collapse-cursor-row", 3,
1286                                 G_TYPE_BOOLEAN, FALSE,
1287                                 G_TYPE_BOOLEAN, FALSE,
1288                                 G_TYPE_BOOLEAN, TRUE);
1289   gtk_binding_entry_add_signal (binding_set, GDK_KEY_KP_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_KEY_Left,
1295                                 GDK_CONTROL_MASK | GDK_SHIFT_MASK,
1296                                 "expand-collapse-cursor-row", 3,
1297                                 G_TYPE_BOOLEAN, FALSE,
1298                                 G_TYPE_BOOLEAN, FALSE,
1299                                 G_TYPE_BOOLEAN, TRUE);
1300   gtk_binding_entry_add_signal (binding_set, GDK_KEY_KP_Left,
1301                                 GDK_CONTROL_MASK | GDK_SHIFT_MASK,
1302                                 "expand-collapse-cursor-row", 3,
1303                                 G_TYPE_BOOLEAN, FALSE,
1304                                 G_TYPE_BOOLEAN, FALSE,
1305                                 G_TYPE_BOOLEAN, TRUE);
1306
1307   gtk_binding_entry_add_signal (binding_set, GDK_KEY_BackSpace, 0, "select-cursor-parent", 0);
1308   gtk_binding_entry_add_signal (binding_set, GDK_KEY_BackSpace, GDK_CONTROL_MASK, "select-cursor-parent", 0);
1309
1310   gtk_binding_entry_add_signal (binding_set, GDK_KEY_f, GDK_CONTROL_MASK, "start-interactive-search", 0);
1311
1312   gtk_binding_entry_add_signal (binding_set, GDK_KEY_F, GDK_CONTROL_MASK, "start-interactive-search", 0);
1313
1314   g_type_class_add_private (o_class, sizeof (GtkTreeViewPrivate));
1315 }
1316
1317 static void
1318 gtk_tree_view_init (GtkTreeView *tree_view)
1319 {
1320   tree_view->priv = G_TYPE_INSTANCE_GET_PRIVATE (tree_view, GTK_TYPE_TREE_VIEW, GtkTreeViewPrivate);
1321
1322   gtk_widget_set_can_focus (GTK_WIDGET (tree_view), TRUE);
1323   gtk_widget_set_redraw_on_allocate (GTK_WIDGET (tree_view), FALSE);
1324
1325   tree_view->priv->flags =  GTK_TREE_VIEW_SHOW_EXPANDERS
1326                             | GTK_TREE_VIEW_DRAW_KEYFOCUS
1327                             | GTK_TREE_VIEW_HEADERS_VISIBLE;
1328
1329   /* We need some padding */
1330   tree_view->priv->dy = 0;
1331   tree_view->priv->cursor_offset = 0;
1332   tree_view->priv->n_columns = 0;
1333   tree_view->priv->header_height = 1;
1334   tree_view->priv->x_drag = 0;
1335   tree_view->priv->drag_pos = -1;
1336   tree_view->priv->header_has_focus = FALSE;
1337   tree_view->priv->pressed_button = -1;
1338   tree_view->priv->press_start_x = -1;
1339   tree_view->priv->press_start_y = -1;
1340   tree_view->priv->reorderable = FALSE;
1341   tree_view->priv->presize_handler_timer = 0;
1342   tree_view->priv->scroll_sync_timer = 0;
1343   tree_view->priv->fixed_height = -1;
1344   tree_view->priv->fixed_height_mode = FALSE;
1345   tree_view->priv->fixed_height_check = 0;
1346   gtk_tree_view_set_adjustments (tree_view, NULL, NULL);
1347   tree_view->priv->selection = _gtk_tree_selection_new_with_tree_view (tree_view);
1348   tree_view->priv->enable_search = TRUE;
1349   tree_view->priv->search_column = -1;
1350   tree_view->priv->search_position_func = gtk_tree_view_search_position_func;
1351   tree_view->priv->search_equal_func = gtk_tree_view_search_equal_func;
1352   tree_view->priv->search_custom_entry_set = FALSE;
1353   tree_view->priv->typeselect_flush_timeout = 0;
1354   tree_view->priv->init_hadjust_value = TRUE;
1355   tree_view->priv->width = 0;
1356
1357   tree_view->priv->hover_selection = FALSE;
1358   tree_view->priv->hover_expand = FALSE;
1359
1360   tree_view->priv->level_indentation = 0;
1361
1362   tree_view->priv->rubber_banding_enable = FALSE;
1363
1364   tree_view->priv->grid_lines = GTK_TREE_VIEW_GRID_LINES_NONE;
1365   tree_view->priv->tree_lines_enabled = FALSE;
1366
1367   tree_view->priv->tooltip_column = -1;
1368
1369   tree_view->priv->post_validation_flag = FALSE;
1370
1371   tree_view->priv->last_button_x = -1;
1372   tree_view->priv->last_button_y = -1;
1373
1374   tree_view->priv->event_last_x = -10000;
1375   tree_view->priv->event_last_y = -10000;
1376 }
1377
1378 \f
1379
1380 /* GObject Methods
1381  */
1382
1383 static void
1384 gtk_tree_view_set_property (GObject         *object,
1385                             guint            prop_id,
1386                             const GValue    *value,
1387                             GParamSpec      *pspec)
1388 {
1389   GtkTreeView *tree_view;
1390
1391   tree_view = GTK_TREE_VIEW (object);
1392
1393   switch (prop_id)
1394     {
1395     case PROP_MODEL:
1396       gtk_tree_view_set_model (tree_view, g_value_get_object (value));
1397       break;
1398     case PROP_HADJUSTMENT:
1399       gtk_tree_view_set_hadjustment (tree_view, g_value_get_object (value));
1400       break;
1401     case PROP_VADJUSTMENT:
1402       gtk_tree_view_set_vadjustment (tree_view, g_value_get_object (value));
1403       break;
1404     case PROP_HEADERS_VISIBLE:
1405       gtk_tree_view_set_headers_visible (tree_view, g_value_get_boolean (value));
1406       break;
1407     case PROP_HEADERS_CLICKABLE:
1408       gtk_tree_view_set_headers_clickable (tree_view, g_value_get_boolean (value));
1409       break;
1410     case PROP_EXPANDER_COLUMN:
1411       gtk_tree_view_set_expander_column (tree_view, g_value_get_object (value));
1412       break;
1413     case PROP_REORDERABLE:
1414       gtk_tree_view_set_reorderable (tree_view, g_value_get_boolean (value));
1415       break;
1416     case PROP_RULES_HINT:
1417       gtk_tree_view_set_rules_hint (tree_view, g_value_get_boolean (value));
1418       break;
1419     case PROP_ENABLE_SEARCH:
1420       gtk_tree_view_set_enable_search (tree_view, g_value_get_boolean (value));
1421       break;
1422     case PROP_SEARCH_COLUMN:
1423       gtk_tree_view_set_search_column (tree_view, g_value_get_int (value));
1424       break;
1425     case PROP_FIXED_HEIGHT_MODE:
1426       gtk_tree_view_set_fixed_height_mode (tree_view, g_value_get_boolean (value));
1427       break;
1428     case PROP_HOVER_SELECTION:
1429       tree_view->priv->hover_selection = g_value_get_boolean (value);
1430       break;
1431     case PROP_HOVER_EXPAND:
1432       tree_view->priv->hover_expand = g_value_get_boolean (value);
1433       break;
1434     case PROP_SHOW_EXPANDERS:
1435       gtk_tree_view_set_show_expanders (tree_view, g_value_get_boolean (value));
1436       break;
1437     case PROP_LEVEL_INDENTATION:
1438       tree_view->priv->level_indentation = g_value_get_int (value);
1439       break;
1440     case PROP_RUBBER_BANDING:
1441       tree_view->priv->rubber_banding_enable = g_value_get_boolean (value);
1442       break;
1443     case PROP_ENABLE_GRID_LINES:
1444       gtk_tree_view_set_grid_lines (tree_view, g_value_get_enum (value));
1445       break;
1446     case PROP_ENABLE_TREE_LINES:
1447       gtk_tree_view_set_enable_tree_lines (tree_view, g_value_get_boolean (value));
1448       break;
1449     case PROP_TOOLTIP_COLUMN:
1450       gtk_tree_view_set_tooltip_column (tree_view, g_value_get_int (value));
1451       break;
1452     default:
1453       G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
1454       break;
1455     }
1456 }
1457
1458 static void
1459 gtk_tree_view_get_property (GObject    *object,
1460                             guint       prop_id,
1461                             GValue     *value,
1462                             GParamSpec *pspec)
1463 {
1464   GtkTreeView *tree_view;
1465
1466   tree_view = GTK_TREE_VIEW (object);
1467
1468   switch (prop_id)
1469     {
1470     case PROP_MODEL:
1471       g_value_set_object (value, tree_view->priv->model);
1472       break;
1473     case PROP_HADJUSTMENT:
1474       g_value_set_object (value, tree_view->priv->hadjustment);
1475       break;
1476     case PROP_VADJUSTMENT:
1477       g_value_set_object (value, tree_view->priv->vadjustment);
1478       break;
1479     case PROP_HEADERS_VISIBLE:
1480       g_value_set_boolean (value, gtk_tree_view_get_headers_visible (tree_view));
1481       break;
1482     case PROP_HEADERS_CLICKABLE:
1483       g_value_set_boolean (value, gtk_tree_view_get_headers_clickable (tree_view));
1484       break;
1485     case PROP_EXPANDER_COLUMN:
1486       g_value_set_object (value, tree_view->priv->expander_column);
1487       break;
1488     case PROP_REORDERABLE:
1489       g_value_set_boolean (value, tree_view->priv->reorderable);
1490       break;
1491     case PROP_RULES_HINT:
1492       g_value_set_boolean (value, tree_view->priv->has_rules);
1493       break;
1494     case PROP_ENABLE_SEARCH:
1495       g_value_set_boolean (value, tree_view->priv->enable_search);
1496       break;
1497     case PROP_SEARCH_COLUMN:
1498       g_value_set_int (value, tree_view->priv->search_column);
1499       break;
1500     case PROP_FIXED_HEIGHT_MODE:
1501       g_value_set_boolean (value, tree_view->priv->fixed_height_mode);
1502       break;
1503     case PROP_HOVER_SELECTION:
1504       g_value_set_boolean (value, tree_view->priv->hover_selection);
1505       break;
1506     case PROP_HOVER_EXPAND:
1507       g_value_set_boolean (value, tree_view->priv->hover_expand);
1508       break;
1509     case PROP_SHOW_EXPANDERS:
1510       g_value_set_boolean (value, GTK_TREE_VIEW_FLAG_SET (tree_view, GTK_TREE_VIEW_SHOW_EXPANDERS));
1511       break;
1512     case PROP_LEVEL_INDENTATION:
1513       g_value_set_int (value, tree_view->priv->level_indentation);
1514       break;
1515     case PROP_RUBBER_BANDING:
1516       g_value_set_boolean (value, tree_view->priv->rubber_banding_enable);
1517       break;
1518     case PROP_ENABLE_GRID_LINES:
1519       g_value_set_enum (value, tree_view->priv->grid_lines);
1520       break;
1521     case PROP_ENABLE_TREE_LINES:
1522       g_value_set_boolean (value, tree_view->priv->tree_lines_enabled);
1523       break;
1524     case PROP_TOOLTIP_COLUMN:
1525       g_value_set_int (value, tree_view->priv->tooltip_column);
1526       break;
1527     default:
1528       G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
1529       break;
1530     }
1531 }
1532
1533 static void
1534 gtk_tree_view_finalize (GObject *object)
1535 {
1536   G_OBJECT_CLASS (gtk_tree_view_parent_class)->finalize (object);
1537 }
1538
1539
1540 static GtkBuildableIface *parent_buildable_iface;
1541
1542 static void
1543 gtk_tree_view_buildable_init (GtkBuildableIface *iface)
1544 {
1545   parent_buildable_iface = g_type_interface_peek_parent (iface);
1546   iface->add_child = gtk_tree_view_buildable_add_child;
1547   iface->get_internal_child = gtk_tree_view_buildable_get_internal_child;
1548 }
1549
1550 static void
1551 gtk_tree_view_buildable_add_child (GtkBuildable *tree_view,
1552                                    GtkBuilder  *builder,
1553                                    GObject     *child,
1554                                    const gchar *type)
1555 {
1556   gtk_tree_view_append_column (GTK_TREE_VIEW (tree_view), GTK_TREE_VIEW_COLUMN (child));
1557 }
1558
1559 static GObject *
1560 gtk_tree_view_buildable_get_internal_child (GtkBuildable      *buildable,
1561                                             GtkBuilder        *builder,
1562                                             const gchar       *childname)
1563 {
1564     if (strcmp (childname, "selection") == 0)
1565       return G_OBJECT (GTK_TREE_VIEW (buildable)->priv->selection);
1566
1567     return parent_buildable_iface->get_internal_child (buildable,
1568                                                        builder,
1569                                                        childname);
1570 }
1571
1572 /* GtkObject Methods
1573  */
1574
1575 static void
1576 gtk_tree_view_free_rbtree (GtkTreeView *tree_view)
1577 {
1578   _gtk_rbtree_free (tree_view->priv->tree);
1579
1580   tree_view->priv->tree = NULL;
1581   tree_view->priv->button_pressed_node = NULL;
1582   tree_view->priv->button_pressed_tree = NULL;
1583   tree_view->priv->prelight_tree = NULL;
1584   tree_view->priv->prelight_node = NULL;
1585   tree_view->priv->expanded_collapsed_node = NULL;
1586   tree_view->priv->expanded_collapsed_tree = NULL;
1587 }
1588
1589 static void
1590 gtk_tree_view_destroy (GtkObject *object)
1591 {
1592   GtkTreeView *tree_view = GTK_TREE_VIEW (object);
1593   GList *list;
1594
1595   gtk_tree_view_stop_editing (tree_view, TRUE);
1596
1597   if (tree_view->priv->columns != NULL)
1598     {
1599       list = tree_view->priv->columns;
1600       while (list)
1601         {
1602           GtkTreeViewColumn *column;
1603           column = GTK_TREE_VIEW_COLUMN (list->data);
1604           list = list->next;
1605           gtk_tree_view_remove_column (tree_view, column);
1606         }
1607       tree_view->priv->columns = NULL;
1608     }
1609
1610   if (tree_view->priv->tree != NULL)
1611     {
1612       gtk_tree_view_unref_and_check_selection_tree (tree_view, tree_view->priv->tree);
1613
1614       gtk_tree_view_free_rbtree (tree_view);
1615     }
1616
1617   if (tree_view->priv->selection != NULL)
1618     {
1619       _gtk_tree_selection_set_tree_view (tree_view->priv->selection, NULL);
1620       g_object_unref (tree_view->priv->selection);
1621       tree_view->priv->selection = NULL;
1622     }
1623
1624   if (tree_view->priv->scroll_to_path != NULL)
1625     {
1626       gtk_tree_row_reference_free (tree_view->priv->scroll_to_path);
1627       tree_view->priv->scroll_to_path = NULL;
1628     }
1629
1630   if (tree_view->priv->drag_dest_row != NULL)
1631     {
1632       gtk_tree_row_reference_free (tree_view->priv->drag_dest_row);
1633       tree_view->priv->drag_dest_row = NULL;
1634     }
1635
1636   if (tree_view->priv->top_row != NULL)
1637     {
1638       gtk_tree_row_reference_free (tree_view->priv->top_row);
1639       tree_view->priv->top_row = NULL;
1640     }
1641
1642   if (tree_view->priv->column_drop_func_data &&
1643       tree_view->priv->column_drop_func_data_destroy)
1644     {
1645       tree_view->priv->column_drop_func_data_destroy (tree_view->priv->column_drop_func_data);
1646       tree_view->priv->column_drop_func_data = NULL;
1647     }
1648
1649   if (tree_view->priv->destroy_count_destroy &&
1650       tree_view->priv->destroy_count_data)
1651     {
1652       tree_view->priv->destroy_count_destroy (tree_view->priv->destroy_count_data);
1653       tree_view->priv->destroy_count_data = NULL;
1654     }
1655
1656   gtk_tree_row_reference_free (tree_view->priv->cursor);
1657   tree_view->priv->cursor = NULL;
1658
1659   gtk_tree_row_reference_free (tree_view->priv->anchor);
1660   tree_view->priv->anchor = NULL;
1661
1662   /* destroy interactive search dialog */
1663   if (tree_view->priv->search_window)
1664     {
1665       gtk_widget_destroy (tree_view->priv->search_window);
1666       tree_view->priv->search_window = NULL;
1667       tree_view->priv->search_entry = NULL;
1668       if (tree_view->priv->typeselect_flush_timeout)
1669         {
1670           g_source_remove (tree_view->priv->typeselect_flush_timeout);
1671           tree_view->priv->typeselect_flush_timeout = 0;
1672         }
1673     }
1674
1675   if (tree_view->priv->search_destroy && tree_view->priv->search_user_data)
1676     {
1677       tree_view->priv->search_destroy (tree_view->priv->search_user_data);
1678       tree_view->priv->search_user_data = NULL;
1679     }
1680
1681   if (tree_view->priv->search_position_destroy && tree_view->priv->search_position_user_data)
1682     {
1683       tree_view->priv->search_position_destroy (tree_view->priv->search_position_user_data);
1684       tree_view->priv->search_position_user_data = NULL;
1685     }
1686
1687   if (tree_view->priv->row_separator_destroy && tree_view->priv->row_separator_data)
1688     {
1689       tree_view->priv->row_separator_destroy (tree_view->priv->row_separator_data);
1690       tree_view->priv->row_separator_data = NULL;
1691     }
1692
1693   gtk_tree_view_set_model (tree_view, NULL);
1694
1695   if (tree_view->priv->hadjustment)
1696     {
1697       g_object_unref (tree_view->priv->hadjustment);
1698       tree_view->priv->hadjustment = NULL;
1699     }
1700   if (tree_view->priv->vadjustment)
1701     {
1702       g_object_unref (tree_view->priv->vadjustment);
1703       tree_view->priv->vadjustment = NULL;
1704     }
1705
1706   GTK_OBJECT_CLASS (gtk_tree_view_parent_class)->destroy (object);
1707 }
1708
1709 \f
1710
1711 /* GtkWidget Methods
1712  */
1713
1714 /* GtkWidget::map helper */
1715 static void
1716 gtk_tree_view_map_buttons (GtkTreeView *tree_view)
1717 {
1718   GList *list;
1719
1720   g_return_if_fail (gtk_widget_get_mapped (GTK_WIDGET (tree_view)));
1721
1722   if (GTK_TREE_VIEW_FLAG_SET (tree_view, GTK_TREE_VIEW_HEADERS_VISIBLE))
1723     {
1724       GtkTreeViewColumn *column;
1725
1726       for (list = tree_view->priv->columns; list; list = list->next)
1727         {
1728           column = list->data;
1729           if (gtk_widget_get_visible (column->button) &&
1730               !gtk_widget_get_mapped (column->button))
1731             gtk_widget_map (column->button);
1732         }
1733       for (list = tree_view->priv->columns; list; list = list->next)
1734         {
1735           column = list->data;
1736           if (column->visible == FALSE)
1737             continue;
1738           if (column->resizable)
1739             {
1740               gdk_window_raise (column->window);
1741               gdk_window_show (column->window);
1742             }
1743           else
1744             gdk_window_hide (column->window);
1745         }
1746       gdk_window_show (tree_view->priv->header_window);
1747     }
1748 }
1749
1750 static void
1751 gtk_tree_view_map (GtkWidget *widget)
1752 {
1753   GtkTreeView *tree_view = GTK_TREE_VIEW (widget);
1754   GList *tmp_list;
1755
1756   gtk_widget_set_mapped (widget, TRUE);
1757
1758   tmp_list = tree_view->priv->children;
1759   while (tmp_list)
1760     {
1761       GtkTreeViewChild *child = tmp_list->data;
1762       tmp_list = tmp_list->next;
1763
1764       if (gtk_widget_get_visible (child->widget))
1765         {
1766           if (!gtk_widget_get_mapped (child->widget))
1767             gtk_widget_map (child->widget);
1768         }
1769     }
1770   gdk_window_show (tree_view->priv->bin_window);
1771
1772   gtk_tree_view_map_buttons (tree_view);
1773
1774   gdk_window_show (gtk_widget_get_window (widget));
1775 }
1776
1777 static void
1778 gtk_tree_view_realize (GtkWidget *widget)
1779 {
1780   GtkAllocation allocation;
1781   GtkStyle *style;
1782   GtkTreeView *tree_view = GTK_TREE_VIEW (widget);
1783   GdkWindow *window;
1784   GdkWindowAttr attributes;
1785   GList *tmp_list;
1786   gint attributes_mask;
1787
1788   gtk_widget_set_realized (widget, TRUE);
1789
1790   gtk_widget_get_allocation (widget, &allocation);
1791
1792   /* Make the main, clipping window */
1793   attributes.window_type = GDK_WINDOW_CHILD;
1794   attributes.x = allocation.x;
1795   attributes.y = allocation.y;
1796   attributes.width = allocation.width;
1797   attributes.height = allocation.height;
1798   attributes.wclass = GDK_INPUT_OUTPUT;
1799   attributes.visual = gtk_widget_get_visual (widget);
1800   attributes.event_mask = GDK_VISIBILITY_NOTIFY_MASK;
1801
1802   attributes_mask = GDK_WA_X | GDK_WA_Y | GDK_WA_VISUAL;
1803
1804   window = gdk_window_new (gtk_widget_get_parent_window (widget),
1805                            &attributes, attributes_mask);
1806   gtk_widget_set_window (widget, window);
1807   gdk_window_set_user_data (window, widget);
1808
1809   gtk_widget_get_allocation (widget, &allocation);
1810
1811   /* Make the window for the tree */
1812   attributes.x = 0;
1813   attributes.y = TREE_VIEW_HEADER_HEIGHT (tree_view);
1814   attributes.width = MAX (tree_view->priv->width, allocation.width);
1815   attributes.height = allocation.height;
1816   attributes.event_mask = (GDK_EXPOSURE_MASK |
1817                            GDK_SCROLL_MASK |
1818                            GDK_POINTER_MOTION_MASK |
1819                            GDK_ENTER_NOTIFY_MASK |
1820                            GDK_LEAVE_NOTIFY_MASK |
1821                            GDK_BUTTON_PRESS_MASK |
1822                            GDK_BUTTON_RELEASE_MASK |
1823                            gtk_widget_get_events (widget));
1824
1825   tree_view->priv->bin_window = gdk_window_new (window,
1826                                                 &attributes, attributes_mask);
1827   gdk_window_set_user_data (tree_view->priv->bin_window, widget);
1828
1829   gtk_widget_get_allocation (widget, &allocation);
1830
1831   /* Make the column header window */
1832   attributes.x = 0;
1833   attributes.y = 0;
1834   attributes.width = MAX (tree_view->priv->width, allocation.width);
1835   attributes.height = tree_view->priv->header_height;
1836   attributes.event_mask = (GDK_EXPOSURE_MASK |
1837                            GDK_SCROLL_MASK |
1838                            GDK_ENTER_NOTIFY_MASK |
1839                            GDK_LEAVE_NOTIFY_MASK |
1840                            GDK_BUTTON_PRESS_MASK |
1841                            GDK_BUTTON_RELEASE_MASK |
1842                            GDK_KEY_PRESS_MASK |
1843                            GDK_KEY_RELEASE_MASK |
1844                            gtk_widget_get_events (widget));
1845
1846   tree_view->priv->header_window = gdk_window_new (window,
1847                                                    &attributes, attributes_mask);
1848   gdk_window_set_user_data (tree_view->priv->header_window, widget);
1849
1850   /* Add them all up. */
1851   gtk_widget_style_attach (widget);
1852   style = gtk_widget_get_style (widget);
1853   gdk_window_set_background (tree_view->priv->bin_window,
1854                              &style->base[gtk_widget_get_state (widget)]);
1855   gtk_style_set_background (style, tree_view->priv->header_window, GTK_STATE_NORMAL);
1856
1857   tmp_list = tree_view->priv->children;
1858   while (tmp_list)
1859     {
1860       GtkTreeViewChild *child = tmp_list->data;
1861       tmp_list = tmp_list->next;
1862
1863       gtk_widget_set_parent_window (child->widget, tree_view->priv->bin_window);
1864     }
1865
1866   for (tmp_list = tree_view->priv->columns; tmp_list; tmp_list = tmp_list->next)
1867     _gtk_tree_view_column_realize_button (GTK_TREE_VIEW_COLUMN (tmp_list->data));
1868
1869   /* Need to call those here, since they create GCs */
1870   gtk_tree_view_set_grid_lines (tree_view, tree_view->priv->grid_lines);
1871   gtk_tree_view_set_enable_tree_lines (tree_view, tree_view->priv->tree_lines_enabled);
1872
1873   install_presize_handler (tree_view);
1874 }
1875
1876 static void
1877 gtk_tree_view_unrealize (GtkWidget *widget)
1878 {
1879   GtkTreeView *tree_view = GTK_TREE_VIEW (widget);
1880   GtkTreeViewPrivate *priv = tree_view->priv;
1881   GList *list;
1882
1883   if (priv->scroll_timeout != 0)
1884     {
1885       g_source_remove (priv->scroll_timeout);
1886       priv->scroll_timeout = 0;
1887     }
1888
1889   if (priv->auto_expand_timeout != 0)
1890     {
1891       g_source_remove (priv->auto_expand_timeout);
1892       priv->auto_expand_timeout = 0;
1893     }
1894
1895   if (priv->open_dest_timeout != 0)
1896     {
1897       g_source_remove (priv->open_dest_timeout);
1898       priv->open_dest_timeout = 0;
1899     }
1900
1901   remove_expand_collapse_timeout (tree_view);
1902
1903   if (priv->presize_handler_timer != 0)
1904     {
1905       g_source_remove (priv->presize_handler_timer);
1906       priv->presize_handler_timer = 0;
1907     }
1908
1909   if (priv->validate_rows_timer != 0)
1910     {
1911       g_source_remove (priv->validate_rows_timer);
1912       priv->validate_rows_timer = 0;
1913     }
1914
1915   if (priv->scroll_sync_timer != 0)
1916     {
1917       g_source_remove (priv->scroll_sync_timer);
1918       priv->scroll_sync_timer = 0;
1919     }
1920
1921   if (priv->typeselect_flush_timeout)
1922     {
1923       g_source_remove (priv->typeselect_flush_timeout);
1924       priv->typeselect_flush_timeout = 0;
1925     }
1926
1927   for (list = priv->columns; list; list = list->next)
1928     _gtk_tree_view_column_unrealize_button (GTK_TREE_VIEW_COLUMN (list->data));
1929
1930   gdk_window_set_user_data (priv->bin_window, NULL);
1931   gdk_window_destroy (priv->bin_window);
1932   priv->bin_window = NULL;
1933
1934   gdk_window_set_user_data (priv->header_window, NULL);
1935   gdk_window_destroy (priv->header_window);
1936   priv->header_window = NULL;
1937
1938   if (priv->drag_window)
1939     {
1940       gdk_window_set_user_data (priv->drag_window, NULL);
1941       gdk_window_destroy (priv->drag_window);
1942       priv->drag_window = NULL;
1943     }
1944
1945   if (priv->drag_highlight_window)
1946     {
1947       gdk_window_set_user_data (priv->drag_highlight_window, NULL);
1948       gdk_window_destroy (priv->drag_highlight_window);
1949       priv->drag_highlight_window = NULL;
1950     }
1951
1952   GTK_WIDGET_CLASS (gtk_tree_view_parent_class)->unrealize (widget);
1953 }
1954
1955 /* GtkWidget::size_request helper */
1956 static void
1957 gtk_tree_view_size_request_columns (GtkTreeView *tree_view)
1958 {
1959   GList *list;
1960
1961   tree_view->priv->header_height = 0;
1962
1963   if (tree_view->priv->model)
1964     {
1965       for (list = tree_view->priv->columns; list; list = list->next)
1966         {
1967           GtkRequisition requisition;
1968           GtkTreeViewColumn *column = list->data;
1969
1970           if (column->button == NULL)
1971             continue;
1972
1973           column = list->data;
1974
1975           gtk_size_request_get_size (GTK_SIZE_REQUEST (column->button),
1976                                      &requisition, NULL);
1977           column->button_request = requisition.width;
1978           tree_view->priv->header_height = MAX (tree_view->priv->header_height, requisition.height);
1979         }
1980     }
1981 }
1982
1983
1984 /* Called only by ::size_request */
1985 static void
1986 gtk_tree_view_update_size (GtkTreeView *tree_view)
1987 {
1988   GList *list;
1989   GtkTreeViewColumn *column;
1990   gint i;
1991
1992   if (tree_view->priv->model == NULL)
1993     {
1994       tree_view->priv->width = 0;
1995       tree_view->priv->prev_width = 0;
1996       tree_view->priv->height = 0;
1997       return;
1998     }
1999
2000   tree_view->priv->prev_width = tree_view->priv->width;
2001   tree_view->priv->width = 0;
2002
2003   /* keep this in sync with size_allocate below */
2004   for (list = tree_view->priv->columns, i = 0; list; list = list->next, i++)
2005     {
2006       gint real_requested_width = 0;
2007       column = list->data;
2008       if (!column->visible)
2009         continue;
2010
2011       if (column->use_resized_width)
2012         {
2013           real_requested_width = column->resized_width;
2014         }
2015       else if (column->column_type == GTK_TREE_VIEW_COLUMN_FIXED)
2016         {
2017           real_requested_width = column->fixed_width;
2018         }
2019       else if (GTK_TREE_VIEW_FLAG_SET (tree_view, GTK_TREE_VIEW_HEADERS_VISIBLE))
2020         {
2021           real_requested_width = MAX (column->requested_width, column->button_request);
2022         }
2023       else
2024         {
2025           real_requested_width = column->requested_width;
2026         }
2027
2028       if (column->min_width != -1)
2029         real_requested_width = MAX (real_requested_width, column->min_width);
2030       if (column->max_width != -1)
2031         real_requested_width = MIN (real_requested_width, column->max_width);
2032
2033       tree_view->priv->width += real_requested_width;
2034     }
2035
2036   if (tree_view->priv->tree == NULL)
2037     tree_view->priv->height = 0;
2038   else
2039     tree_view->priv->height = tree_view->priv->tree->root->offset;
2040 }
2041
2042 static void
2043 gtk_tree_view_size_request (GtkWidget      *widget,
2044                             GtkRequisition *requisition)
2045 {
2046   GtkTreeView *tree_view = GTK_TREE_VIEW (widget);
2047   GList *tmp_list;
2048
2049   /* we validate some rows initially just to make sure we have some size.
2050    * In practice, with a lot of static lists, this should get a good width.
2051    */
2052   do_validate_rows (tree_view, FALSE);
2053   gtk_tree_view_size_request_columns (tree_view);
2054   gtk_tree_view_update_size (GTK_TREE_VIEW (widget));
2055
2056   requisition->width = tree_view->priv->width;
2057   requisition->height = tree_view->priv->height + TREE_VIEW_HEADER_HEIGHT (tree_view);
2058
2059   tmp_list = tree_view->priv->children;
2060
2061   while (tmp_list)
2062     {
2063       GtkTreeViewChild *child = tmp_list->data;
2064       GtkRequisition child_requisition;
2065
2066       tmp_list = tmp_list->next;
2067
2068       if (gtk_widget_get_visible (child->widget))
2069         gtk_size_request_get_size (GTK_SIZE_REQUEST (child->widget),
2070                                    &child_requisition, NULL);
2071     }
2072 }
2073
2074 static int
2075 gtk_tree_view_calculate_width_before_expander (GtkTreeView *tree_view)
2076 {
2077   int width = 0;
2078   GList *list;
2079   gboolean rtl;
2080
2081   rtl = (gtk_widget_get_direction (GTK_WIDGET (tree_view)) == GTK_TEXT_DIR_RTL);
2082   for (list = (rtl ? g_list_last (tree_view->priv->columns) : g_list_first (tree_view->priv->columns));
2083        list->data != tree_view->priv->expander_column;
2084        list = (rtl ? list->prev : list->next))
2085     {
2086       GtkTreeViewColumn *column = list->data;
2087
2088       width += column->width;
2089     }
2090
2091   return width;
2092 }
2093
2094 static void
2095 invalidate_column (GtkTreeView       *tree_view,
2096                    GtkTreeViewColumn *column)
2097 {
2098   gint column_offset = 0;
2099   GList *list;
2100   GtkWidget *widget = GTK_WIDGET (tree_view);
2101   gboolean rtl;
2102
2103   if (!gtk_widget_get_realized (widget))
2104     return;
2105
2106   rtl = (gtk_widget_get_direction (GTK_WIDGET (tree_view)) == GTK_TEXT_DIR_RTL);
2107   for (list = (rtl ? g_list_last (tree_view->priv->columns) : g_list_first (tree_view->priv->columns));
2108        list;
2109        list = (rtl ? list->prev : list->next))
2110     {
2111       GtkTreeViewColumn *tmpcolumn = list->data;
2112       if (tmpcolumn == column)
2113         {
2114           GtkAllocation allocation;
2115           GdkRectangle invalid_rect;
2116
2117           gtk_widget_get_allocation (widget, &allocation);
2118           invalid_rect.x = column_offset;
2119           invalid_rect.y = 0;
2120           invalid_rect.width = column->width;
2121           invalid_rect.height = allocation.height;
2122
2123           gdk_window_invalidate_rect (gtk_widget_get_window (widget), &invalid_rect, TRUE);
2124           break;
2125         }
2126
2127       column_offset += tmpcolumn->width;
2128     }
2129 }
2130
2131 static void
2132 invalidate_last_column (GtkTreeView *tree_view)
2133 {
2134   GList *last_column;
2135   gboolean rtl;
2136
2137   rtl = (gtk_widget_get_direction (GTK_WIDGET (tree_view)) == GTK_TEXT_DIR_RTL);
2138
2139   for (last_column = (rtl ? g_list_first (tree_view->priv->columns) : g_list_last (tree_view->priv->columns));
2140        last_column;
2141        last_column = (rtl ? last_column->next : last_column->prev))
2142     {
2143       if (GTK_TREE_VIEW_COLUMN (last_column->data)->visible)
2144         {
2145           invalidate_column (tree_view, last_column->data);
2146           return;
2147         }
2148     }
2149 }
2150
2151 static gint
2152 gtk_tree_view_get_real_requested_width_from_column (GtkTreeView       *tree_view,
2153                                                     GtkTreeViewColumn *column)
2154 {
2155   gint real_requested_width;
2156
2157   if (column->use_resized_width)
2158     {
2159       real_requested_width = column->resized_width;
2160     }
2161   else if (column->column_type == GTK_TREE_VIEW_COLUMN_FIXED)
2162     {
2163       real_requested_width = column->fixed_width;
2164     }
2165   else if (GTK_TREE_VIEW_FLAG_SET (tree_view, GTK_TREE_VIEW_HEADERS_VISIBLE))
2166     {
2167       real_requested_width = MAX (column->requested_width, column->button_request);
2168     }
2169   else
2170     {
2171       real_requested_width = column->requested_width;
2172       if (real_requested_width < 0)
2173         real_requested_width = 0;
2174     }
2175
2176   if (column->min_width != -1)
2177     real_requested_width = MAX (real_requested_width, column->min_width);
2178   if (column->max_width != -1)
2179     real_requested_width = MIN (real_requested_width, column->max_width);
2180
2181   return real_requested_width;
2182 }
2183
2184 /* GtkWidget::size_allocate helper */
2185 static void
2186 gtk_tree_view_size_allocate_columns (GtkWidget *widget,
2187                                      gboolean  *width_changed)
2188 {
2189   GtkTreeView *tree_view;
2190   GList *list, *first_column, *last_column;
2191   GtkTreeViewColumn *column;
2192   GtkAllocation allocation;
2193   GtkAllocation widget_allocation;
2194   gint width = 0;
2195   gint extra, extra_per_column, extra_for_last;
2196   gint full_requested_width = 0;
2197   gint number_of_expand_columns = 0;
2198   gboolean column_changed = FALSE;
2199   gboolean rtl;
2200   gboolean update_expand;
2201
2202   tree_view = GTK_TREE_VIEW (widget);
2203
2204   for (last_column = g_list_last (tree_view->priv->columns);
2205        last_column && !(GTK_TREE_VIEW_COLUMN (last_column->data)->visible);
2206        last_column = last_column->prev)
2207     ;
2208   if (last_column == NULL)
2209     return;
2210
2211   for (first_column = g_list_first (tree_view->priv->columns);
2212        first_column && !(GTK_TREE_VIEW_COLUMN (first_column->data)->visible);
2213        first_column = first_column->next)
2214     ;
2215
2216   allocation.y = 0;
2217   allocation.height = tree_view->priv->header_height;
2218
2219   rtl = (gtk_widget_get_direction (widget) == GTK_TEXT_DIR_RTL);
2220
2221   /* find out how many extra space and expandable columns we have */
2222   for (list = tree_view->priv->columns; list != last_column->next; list = list->next)
2223     {
2224       column = (GtkTreeViewColumn *)list->data;
2225
2226       if (!column->visible)
2227         continue;
2228
2229       full_requested_width += gtk_tree_view_get_real_requested_width_from_column (tree_view, column);
2230
2231       if (column->expand)
2232         number_of_expand_columns++;
2233     }
2234
2235   /* Only update the expand value if the width of the widget has changed,
2236    * or the number of expand columns has changed, or if there are no expand
2237    * columns, or if we didn't have an size-allocation yet after the
2238    * last validated node.
2239    */
2240   update_expand = (width_changed && *width_changed == TRUE)
2241       || number_of_expand_columns != tree_view->priv->last_number_of_expand_columns
2242       || number_of_expand_columns == 0
2243       || tree_view->priv->post_validation_flag == TRUE;
2244
2245   tree_view->priv->post_validation_flag = FALSE;
2246
2247   gtk_widget_get_allocation (widget, &widget_allocation);
2248   if (!update_expand)
2249     {
2250       extra = tree_view->priv->last_extra_space;
2251       extra_for_last = MAX (widget_allocation.width - full_requested_width - extra, 0);
2252     }
2253   else
2254     {
2255       extra = MAX (widget_allocation.width - full_requested_width, 0);
2256       extra_for_last = 0;
2257
2258       tree_view->priv->last_extra_space = extra;
2259     }
2260
2261   if (number_of_expand_columns > 0)
2262     extra_per_column = extra/number_of_expand_columns;
2263   else
2264     extra_per_column = 0;
2265
2266   if (update_expand)
2267     {
2268       tree_view->priv->last_extra_space_per_column = extra_per_column;
2269       tree_view->priv->last_number_of_expand_columns = number_of_expand_columns;
2270     }
2271
2272   for (list = (rtl ? last_column : first_column);
2273        list != (rtl ? first_column->prev : last_column->next);
2274        list = (rtl ? list->prev : list->next))
2275     {
2276       gint real_requested_width = 0;
2277       gint old_width;
2278
2279       column = list->data;
2280       old_width = column->width;
2281
2282       if (!column->visible)
2283         continue;
2284
2285       /* We need to handle the dragged button specially.
2286        */
2287       if (column == tree_view->priv->drag_column)
2288         {
2289           GtkAllocation drag_allocation;
2290           gdk_drawable_get_size (tree_view->priv->drag_window,
2291                                  &(drag_allocation.width),
2292                                  &(drag_allocation.height));
2293           drag_allocation.x = 0;
2294           drag_allocation.y = 0;
2295           gtk_widget_size_allocate (tree_view->priv->drag_column->button,
2296                                     &drag_allocation);
2297           width += drag_allocation.width;
2298           continue;
2299         }
2300
2301       real_requested_width = gtk_tree_view_get_real_requested_width_from_column (tree_view, column);
2302
2303       allocation.x = width;
2304       column->width = real_requested_width;
2305
2306       if (column->expand)
2307         {
2308           if (number_of_expand_columns == 1)
2309             {
2310               /* We add the remander to the last column as
2311                * */
2312               column->width += extra;
2313             }
2314           else
2315             {
2316               column->width += extra_per_column;
2317               extra -= extra_per_column;
2318               number_of_expand_columns --;
2319             }
2320         }
2321       else if (number_of_expand_columns == 0 &&
2322                list == last_column)
2323         {
2324           column->width += extra;
2325         }
2326
2327       /* In addition to expand, the last column can get even more
2328        * extra space so all available space is filled up.
2329        */
2330       if (extra_for_last > 0 && list == last_column)
2331         column->width += extra_for_last;
2332
2333       g_object_notify (G_OBJECT (column), "width");
2334
2335       allocation.width = column->width;
2336       width += column->width;
2337
2338       if (column->width > old_width)
2339         column_changed = TRUE;
2340
2341       gtk_widget_size_allocate (column->button, &allocation);
2342
2343       if (column->window)
2344         gdk_window_move_resize (column->window,
2345                                 allocation.x + (rtl ? 0 : allocation.width) - TREE_VIEW_DRAG_WIDTH/2,
2346                                 allocation.y,
2347                                 TREE_VIEW_DRAG_WIDTH, allocation.height);
2348     }
2349
2350   /* We change the width here.  The user might have been resizing columns,
2351    * so the total width of the tree view changes.
2352    */
2353   tree_view->priv->width = width;
2354   if (width_changed)
2355     *width_changed = TRUE;
2356
2357   if (column_changed)
2358     gtk_widget_queue_draw (GTK_WIDGET (tree_view));
2359 }
2360
2361
2362 static void
2363 gtk_tree_view_size_allocate (GtkWidget     *widget,
2364                              GtkAllocation *allocation)
2365 {
2366   GtkAllocation widget_allocation;
2367   GtkTreeView *tree_view = GTK_TREE_VIEW (widget);
2368   GList *tmp_list;
2369   gboolean width_changed = FALSE;
2370   gint old_width;
2371
2372   gtk_widget_get_allocation (widget, &widget_allocation);
2373   old_width = widget_allocation.width;
2374   if (allocation->width != widget_allocation.width)
2375     width_changed = TRUE;
2376
2377   gtk_widget_set_allocation (widget, allocation);
2378
2379   tmp_list = tree_view->priv->children;
2380
2381   while (tmp_list)
2382     {
2383       GtkAllocation allocation;
2384
2385       GtkTreeViewChild *child = tmp_list->data;
2386       tmp_list = tmp_list->next;
2387
2388       /* totally ignore our child's requisition */
2389       allocation.x = child->x;
2390       allocation.y = child->y;
2391       allocation.width = child->width;
2392       allocation.height = child->height;
2393       gtk_widget_size_allocate (child->widget, &allocation);
2394     }
2395
2396   /* We size-allocate the columns first because the width of the
2397    * tree view (used in updating the adjustments below) might change.
2398    */
2399   gtk_tree_view_size_allocate_columns (widget, &width_changed);
2400
2401   tree_view->priv->hadjustment->page_size = allocation->width;
2402   tree_view->priv->hadjustment->page_increment = allocation->width * 0.9;
2403   tree_view->priv->hadjustment->step_increment = allocation->width * 0.1;
2404   tree_view->priv->hadjustment->lower = 0;
2405   tree_view->priv->hadjustment->upper = MAX (tree_view->priv->hadjustment->page_size, tree_view->priv->width);
2406
2407   if (gtk_widget_get_direction(widget) == GTK_TEXT_DIR_RTL)
2408     {
2409       if (allocation->width < tree_view->priv->width)
2410         {
2411           if (tree_view->priv->init_hadjust_value)
2412             {
2413               tree_view->priv->hadjustment->value = MAX (tree_view->priv->width - allocation->width, 0);
2414               tree_view->priv->init_hadjust_value = FALSE;
2415             }
2416           else if (allocation->width != old_width)
2417             {
2418               tree_view->priv->hadjustment->value = CLAMP (tree_view->priv->hadjustment->value - allocation->width + old_width, 0, tree_view->priv->width - allocation->width);
2419             }
2420           else
2421             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);
2422         }
2423       else
2424         {
2425           tree_view->priv->hadjustment->value = 0;
2426           tree_view->priv->init_hadjust_value = TRUE;
2427         }
2428     }
2429   else
2430     if (tree_view->priv->hadjustment->value + allocation->width > tree_view->priv->width)
2431       tree_view->priv->hadjustment->value = MAX (tree_view->priv->width - allocation->width, 0);
2432
2433   gtk_adjustment_changed (tree_view->priv->hadjustment);
2434
2435   tree_view->priv->vadjustment->page_size = allocation->height - TREE_VIEW_HEADER_HEIGHT (tree_view);
2436   tree_view->priv->vadjustment->step_increment = tree_view->priv->vadjustment->page_size * 0.1;
2437   tree_view->priv->vadjustment->page_increment = tree_view->priv->vadjustment->page_size * 0.9;
2438   tree_view->priv->vadjustment->lower = 0;
2439   tree_view->priv->vadjustment->upper = MAX (tree_view->priv->vadjustment->page_size, tree_view->priv->height);
2440
2441   gtk_adjustment_changed (tree_view->priv->vadjustment);
2442
2443   /* now the adjustments and window sizes are in sync, we can sync toprow/dy again */
2444   if (tree_view->priv->height <= tree_view->priv->vadjustment->page_size)
2445     gtk_adjustment_set_value (GTK_ADJUSTMENT (tree_view->priv->vadjustment), 0);
2446   else if (tree_view->priv->vadjustment->value + tree_view->priv->vadjustment->page_size > tree_view->priv->height)
2447     gtk_adjustment_set_value (GTK_ADJUSTMENT (tree_view->priv->vadjustment),
2448                               tree_view->priv->height - tree_view->priv->vadjustment->page_size);
2449   else if (gtk_tree_row_reference_valid (tree_view->priv->top_row))
2450     gtk_tree_view_top_row_to_dy (tree_view);
2451   else
2452     gtk_tree_view_dy_to_top_row (tree_view);
2453
2454   if (gtk_widget_get_realized (widget))
2455     {
2456       gdk_window_move_resize (gtk_widget_get_window (widget),
2457                               allocation->x, allocation->y,
2458                               allocation->width, allocation->height);
2459       gdk_window_move_resize (tree_view->priv->header_window,
2460                               - (gint) tree_view->priv->hadjustment->value,
2461                               0,
2462                               MAX (tree_view->priv->width, allocation->width),
2463                               tree_view->priv->header_height);
2464       gdk_window_move_resize (tree_view->priv->bin_window,
2465                               - (gint) tree_view->priv->hadjustment->value,
2466                               TREE_VIEW_HEADER_HEIGHT (tree_view),
2467                               MAX (tree_view->priv->width, allocation->width),
2468                               allocation->height - TREE_VIEW_HEADER_HEIGHT (tree_view));
2469     }
2470
2471   if (tree_view->priv->tree == NULL)
2472     invalidate_empty_focus (tree_view);
2473
2474   if (gtk_widget_get_realized (widget))
2475     {
2476       gboolean has_expand_column = FALSE;
2477       for (tmp_list = tree_view->priv->columns; tmp_list; tmp_list = tmp_list->next)
2478         {
2479           if (gtk_tree_view_column_get_expand (GTK_TREE_VIEW_COLUMN (tmp_list->data)))
2480             {
2481               has_expand_column = TRUE;
2482               break;
2483             }
2484         }
2485
2486       if (width_changed && tree_view->priv->expander_column)
2487         {
2488           /* Might seem awkward, but is the best heuristic I could come up
2489            * with.  Only if the width of the columns before the expander
2490            * changes, we will update the prelight status.  It is this
2491            * width that makes the expander move vertically.  Always updating
2492            * prelight status causes trouble with hover selections.
2493            */
2494           gint width_before_expander;
2495
2496           width_before_expander = gtk_tree_view_calculate_width_before_expander (tree_view);
2497
2498           if (tree_view->priv->prev_width_before_expander
2499               != width_before_expander)
2500               update_prelight (tree_view,
2501                                tree_view->priv->event_last_x,
2502                                tree_view->priv->event_last_y);
2503
2504           tree_view->priv->prev_width_before_expander = width_before_expander;
2505         }
2506
2507       /* This little hack only works if we have an LTR locale, and no column has the  */
2508       if (width_changed)
2509         {
2510           if (gtk_widget_get_direction (GTK_WIDGET (tree_view)) == GTK_TEXT_DIR_LTR &&
2511               ! has_expand_column)
2512             invalidate_last_column (tree_view);
2513           else
2514             gtk_widget_queue_draw (widget);
2515         }
2516     }
2517 }
2518
2519 /* Grabs the focus and unsets the GTK_TREE_VIEW_DRAW_KEYFOCUS flag */
2520 static void
2521 grab_focus_and_unset_draw_keyfocus (GtkTreeView *tree_view)
2522 {
2523   GtkWidget *widget = GTK_WIDGET (tree_view);
2524
2525   if (gtk_widget_get_can_focus (widget) && !gtk_widget_has_focus (widget))
2526     gtk_widget_grab_focus (widget);
2527   GTK_TREE_VIEW_UNSET_FLAG (tree_view, GTK_TREE_VIEW_DRAW_KEYFOCUS);
2528 }
2529
2530 static inline gboolean
2531 row_is_separator (GtkTreeView *tree_view,
2532                   GtkTreeIter *iter,
2533                   GtkTreePath *path)
2534 {
2535   gboolean is_separator = FALSE;
2536
2537   if (tree_view->priv->row_separator_func)
2538     {
2539       GtkTreeIter tmpiter;
2540
2541       if (iter)
2542         tmpiter = *iter;
2543       else
2544         gtk_tree_model_get_iter (tree_view->priv->model, &tmpiter, path);
2545
2546       is_separator = tree_view->priv->row_separator_func (tree_view->priv->model,
2547                                                           &tmpiter,
2548                                                           tree_view->priv->row_separator_data);
2549     }
2550
2551   return is_separator;
2552 }
2553
2554 static gboolean
2555 gtk_tree_view_button_press (GtkWidget      *widget,
2556                             GdkEventButton *event)
2557 {
2558   GtkTreeView *tree_view = GTK_TREE_VIEW (widget);
2559   GList *list;
2560   GtkTreeViewColumn *column = NULL;
2561   gint i;
2562   GdkRectangle background_area;
2563   GdkRectangle cell_area;
2564   gint vertical_separator;
2565   gint horizontal_separator;
2566   gboolean path_is_selectable;
2567   gboolean rtl;
2568
2569   rtl = (gtk_widget_get_direction (widget) == GTK_TEXT_DIR_RTL);
2570   gtk_tree_view_stop_editing (tree_view, FALSE);
2571   gtk_widget_style_get (widget,
2572                         "vertical-separator", &vertical_separator,
2573                         "horizontal-separator", &horizontal_separator,
2574                         NULL);
2575
2576
2577   /* Because grab_focus can cause reentrancy, we delay grab_focus until after
2578    * we're done handling the button press.
2579    */
2580
2581   if (event->window == tree_view->priv->bin_window)
2582     {
2583       GtkRBNode *node;
2584       GtkRBTree *tree;
2585       GtkTreePath *path;
2586       gchar *path_string;
2587       gint depth;
2588       gint new_y;
2589       gint y_offset;
2590       gint dval;
2591       gint pre_val, aft_val;
2592       GtkTreeViewColumn *column = NULL;
2593       GtkCellRenderer *focus_cell = NULL;
2594       gint column_handled_click = FALSE;
2595       gboolean row_double_click = FALSE;
2596       gboolean rtl;
2597       gboolean node_selected;
2598
2599       /* Empty tree? */
2600       if (tree_view->priv->tree == NULL)
2601         {
2602           grab_focus_and_unset_draw_keyfocus (tree_view);
2603           return TRUE;
2604         }
2605
2606       /* are we in an arrow? */
2607       if (tree_view->priv->prelight_node &&
2608           GTK_TREE_VIEW_FLAG_SET (tree_view, GTK_TREE_VIEW_ARROW_PRELIT) &&
2609           TREE_VIEW_DRAW_EXPANDERS (tree_view))
2610         {
2611           if (event->button == 1)
2612             {
2613               gtk_grab_add (widget);
2614               tree_view->priv->button_pressed_node = tree_view->priv->prelight_node;
2615               tree_view->priv->button_pressed_tree = tree_view->priv->prelight_tree;
2616               gtk_tree_view_queue_draw_arrow (GTK_TREE_VIEW (widget),
2617                                               tree_view->priv->prelight_tree,
2618                                               tree_view->priv->prelight_node);
2619             }
2620
2621           grab_focus_and_unset_draw_keyfocus (tree_view);
2622           return TRUE;
2623         }
2624
2625       /* find the node that was clicked */
2626       new_y = TREE_WINDOW_Y_TO_RBTREE_Y(tree_view, event->y);
2627       if (new_y < 0)
2628         new_y = 0;
2629       y_offset = -_gtk_rbtree_find_offset (tree_view->priv->tree, new_y, &tree, &node);
2630
2631       if (node == NULL)
2632         {
2633           /* We clicked in dead space */
2634           grab_focus_and_unset_draw_keyfocus (tree_view);
2635           return TRUE;
2636         }
2637
2638       /* Get the path and the node */
2639       path = _gtk_tree_view_find_path (tree_view, tree, node);
2640       path_is_selectable = !row_is_separator (tree_view, NULL, path);
2641
2642       if (!path_is_selectable)
2643         {
2644           gtk_tree_path_free (path);
2645           grab_focus_and_unset_draw_keyfocus (tree_view);
2646           return TRUE;
2647         }
2648
2649       depth = gtk_tree_path_get_depth (path);
2650       background_area.y = y_offset + event->y;
2651       background_area.height = ROW_HEIGHT (tree_view, GTK_RBNODE_GET_HEIGHT (node));
2652       background_area.x = 0;
2653
2654
2655       /* Let the column have a chance at selecting it. */
2656       rtl = (gtk_widget_get_direction (GTK_WIDGET (tree_view)) == GTK_TEXT_DIR_RTL);
2657       for (list = (rtl ? g_list_last (tree_view->priv->columns) : g_list_first (tree_view->priv->columns));
2658            list; list = (rtl ? list->prev : list->next))
2659         {
2660           GtkTreeViewColumn *candidate = list->data;
2661
2662           if (!candidate->visible)
2663             continue;
2664
2665           background_area.width = candidate->width;
2666           if ((background_area.x > (gint) event->x) ||
2667               (background_area.x + background_area.width <= (gint) event->x))
2668             {
2669               background_area.x += background_area.width;
2670               continue;
2671             }
2672
2673           /* we found the focus column */
2674           column = candidate;
2675           cell_area = background_area;
2676           cell_area.width -= horizontal_separator;
2677           cell_area.height -= vertical_separator;
2678           cell_area.x += horizontal_separator/2;
2679           cell_area.y += vertical_separator/2;
2680           if (gtk_tree_view_is_expander_column (tree_view, column))
2681             {
2682               if (!rtl)
2683                 cell_area.x += (depth - 1) * tree_view->priv->level_indentation;
2684               cell_area.width -= (depth - 1) * tree_view->priv->level_indentation;
2685
2686               if (TREE_VIEW_DRAW_EXPANDERS (tree_view))
2687                 {
2688                   if (!rtl)
2689                     cell_area.x += depth * tree_view->priv->expander_size;
2690                   cell_area.width -= depth * tree_view->priv->expander_size;
2691                 }
2692             }
2693           break;
2694         }
2695
2696       if (column == NULL)
2697         {
2698           gtk_tree_path_free (path);
2699           grab_focus_and_unset_draw_keyfocus (tree_view);
2700           return FALSE;
2701         }
2702
2703       tree_view->priv->focus_column = column;
2704
2705       /* decide if we edit */
2706       if (event->type == GDK_BUTTON_PRESS && event->button == 1 &&
2707           !(event->state & gtk_accelerator_get_default_mod_mask ()))
2708         {
2709           GtkTreePath *anchor;
2710           GtkTreeIter iter;
2711
2712           gtk_tree_model_get_iter (tree_view->priv->model, &iter, path);
2713           gtk_tree_view_column_cell_set_cell_data (column,
2714                                                    tree_view->priv->model,
2715                                                    &iter,
2716                                                    GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_PARENT),
2717                                                    node->children?TRUE:FALSE);
2718
2719           if (tree_view->priv->anchor)
2720             anchor = gtk_tree_row_reference_get_path (tree_view->priv->anchor);
2721           else
2722             anchor = NULL;
2723
2724           if ((anchor && !gtk_tree_path_compare (anchor, path))
2725               || !_gtk_tree_view_column_has_editable_cell (column))
2726             {
2727               GtkCellEditable *cell_editable = NULL;
2728
2729               /* FIXME: get the right flags */
2730               guint flags = 0;
2731
2732               path_string = gtk_tree_path_to_string (path);
2733
2734               if (_gtk_tree_view_column_cell_event (column,
2735                                                     &cell_editable,
2736                                                     (GdkEvent *)event,
2737                                                     path_string,
2738                                                     &background_area,
2739                                                     &cell_area, flags))
2740                 {
2741                   if (cell_editable != NULL)
2742                     {
2743                       gint left, right;
2744                       GdkRectangle area;
2745
2746                       area = cell_area;
2747                       _gtk_tree_view_column_get_neighbor_sizes (column, _gtk_tree_view_column_get_edited_cell (column), &left, &right);
2748
2749                       area.x += left;
2750                       area.width -= right + left;
2751
2752                       gtk_tree_view_real_start_editing (tree_view,
2753                                                         column,
2754                                                         path,
2755                                                         cell_editable,
2756                                                         &area,
2757                                                         (GdkEvent *)event,
2758                                                         flags);
2759                       g_free (path_string);
2760                       gtk_tree_path_free (path);
2761                       gtk_tree_path_free (anchor);
2762                       return TRUE;
2763                     }
2764                   column_handled_click = TRUE;
2765                 }
2766               g_free (path_string);
2767             }
2768           if (anchor)
2769             gtk_tree_path_free (anchor);
2770         }
2771
2772       /* select */
2773       node_selected = GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_SELECTED);
2774       pre_val = tree_view->priv->vadjustment->value;
2775
2776       /* we only handle selection modifications on the first button press
2777        */
2778       if (event->type == GDK_BUTTON_PRESS)
2779         {
2780           if ((event->state & GDK_CONTROL_MASK) == GDK_CONTROL_MASK)
2781             tree_view->priv->ctrl_pressed = TRUE;
2782           if ((event->state & GDK_SHIFT_MASK) == GDK_SHIFT_MASK)
2783             tree_view->priv->shift_pressed = TRUE;
2784
2785           focus_cell = _gtk_tree_view_column_get_cell_at_pos (column, event->x - background_area.x);
2786           if (focus_cell)
2787             gtk_tree_view_column_focus_cell (column, focus_cell);
2788
2789           if (event->state & GDK_CONTROL_MASK)
2790             {
2791               gtk_tree_view_real_set_cursor (tree_view, path, FALSE, TRUE);
2792               gtk_tree_view_real_toggle_cursor_row (tree_view);
2793             }
2794           else if (event->state & GDK_SHIFT_MASK)
2795             {
2796               gtk_tree_view_real_set_cursor (tree_view, path, FALSE, TRUE);
2797               gtk_tree_view_real_select_cursor_row (tree_view, FALSE);
2798             }
2799           else
2800             {
2801               gtk_tree_view_real_set_cursor (tree_view, path, TRUE, TRUE);
2802             }
2803
2804           tree_view->priv->ctrl_pressed = FALSE;
2805           tree_view->priv->shift_pressed = FALSE;
2806         }
2807
2808       /* the treeview may have been scrolled because of _set_cursor,
2809        * correct here
2810        */
2811
2812       aft_val = tree_view->priv->vadjustment->value;
2813       dval = pre_val - aft_val;
2814
2815       cell_area.y += dval;
2816       background_area.y += dval;
2817
2818       /* Save press to possibly begin a drag
2819        */
2820       if (!column_handled_click &&
2821           !tree_view->priv->in_grab &&
2822           tree_view->priv->pressed_button < 0)
2823         {
2824           tree_view->priv->pressed_button = event->button;
2825           tree_view->priv->press_start_x = event->x;
2826           tree_view->priv->press_start_y = event->y;
2827
2828           if (tree_view->priv->rubber_banding_enable
2829               && !node_selected
2830               && tree_view->priv->selection->type == GTK_SELECTION_MULTIPLE)
2831             {
2832               tree_view->priv->press_start_y += tree_view->priv->dy;
2833               tree_view->priv->rubber_band_x = event->x;
2834               tree_view->priv->rubber_band_y = event->y + tree_view->priv->dy;
2835               tree_view->priv->rubber_band_status = RUBBER_BAND_MAYBE_START;
2836
2837               if ((event->state & GDK_CONTROL_MASK) == GDK_CONTROL_MASK)
2838                 tree_view->priv->rubber_band_ctrl = TRUE;
2839               if ((event->state & GDK_SHIFT_MASK) == GDK_SHIFT_MASK)
2840                 tree_view->priv->rubber_band_shift = TRUE;
2841             }
2842         }
2843
2844       /* Test if a double click happened on the same row. */
2845       if (event->button == 1 && event->type == GDK_BUTTON_PRESS)
2846         {
2847           int double_click_time, double_click_distance;
2848
2849           g_object_get (gtk_settings_get_default (),
2850                         "gtk-double-click-time", &double_click_time,
2851                         "gtk-double-click-distance", &double_click_distance,
2852                         NULL);
2853
2854           /* Same conditions as _gdk_event_button_generate */
2855           if (tree_view->priv->last_button_x != -1 &&
2856               (event->time < tree_view->priv->last_button_time + double_click_time) &&
2857               (ABS (event->x - tree_view->priv->last_button_x) <= double_click_distance) &&
2858               (ABS (event->y - tree_view->priv->last_button_y) <= double_click_distance))
2859             {
2860               /* We do no longer compare paths of this row and the
2861                * row clicked previously.  We use the double click
2862                * distance to decide whether this is a valid click,
2863                * allowing the mouse to slightly move over another row.
2864                */
2865               row_double_click = TRUE;
2866
2867               tree_view->priv->last_button_time = 0;
2868               tree_view->priv->last_button_x = -1;
2869               tree_view->priv->last_button_y = -1;
2870             }
2871           else
2872             {
2873               tree_view->priv->last_button_time = event->time;
2874               tree_view->priv->last_button_x = event->x;
2875               tree_view->priv->last_button_y = event->y;
2876             }
2877         }
2878
2879       if (row_double_click)
2880         {
2881           gtk_grab_remove (widget);
2882           gtk_tree_view_row_activated (tree_view, path, column);
2883
2884           if (tree_view->priv->pressed_button == event->button)
2885             tree_view->priv->pressed_button = -1;
2886         }
2887
2888       gtk_tree_path_free (path);
2889
2890       /* If we activated the row through a double click we don't want to grab
2891        * focus back, as moving focus to another widget is pretty common.
2892        */
2893       if (!row_double_click)
2894         grab_focus_and_unset_draw_keyfocus (tree_view);
2895
2896       return TRUE;
2897     }
2898
2899   /* We didn't click in the window.  Let's check to see if we clicked on a column resize window.
2900    */
2901   for (i = 0, list = tree_view->priv->columns; list; list = list->next, i++)
2902     {
2903       column = list->data;
2904       if (event->window == column->window &&
2905           column->resizable &&
2906           column->window)
2907         {
2908           GtkAllocation button_allocation;
2909           gpointer drag_data;
2910
2911           if (event->type == GDK_2BUTTON_PRESS &&
2912               gtk_tree_view_column_get_sizing (column) != GTK_TREE_VIEW_COLUMN_AUTOSIZE)
2913             {
2914               column->use_resized_width = FALSE;
2915               _gtk_tree_view_column_autosize (tree_view, column);
2916               return TRUE;
2917             }
2918
2919           if (gdk_pointer_grab (column->window, FALSE,
2920                                 GDK_POINTER_MOTION_HINT_MASK |
2921                                 GDK_BUTTON1_MOTION_MASK |
2922                                 GDK_BUTTON_RELEASE_MASK,
2923                                 NULL, NULL, event->time))
2924             return FALSE;
2925
2926           gtk_grab_add (widget);
2927           GTK_TREE_VIEW_SET_FLAG (tree_view, GTK_TREE_VIEW_IN_COLUMN_RESIZE);
2928           column->resized_width = column->width - tree_view->priv->last_extra_space_per_column;
2929
2930           /* block attached dnd signal handler */
2931           drag_data = g_object_get_data (G_OBJECT (widget), "gtk-site-data");
2932           if (drag_data)
2933             g_signal_handlers_block_matched (widget,
2934                                              G_SIGNAL_MATCH_DATA,
2935                                              0, 0, NULL, NULL,
2936                                              drag_data);
2937
2938           gtk_widget_get_allocation (column->button, &button_allocation);
2939           tree_view->priv->drag_pos = i;
2940           tree_view->priv->x_drag = button_allocation.x + (rtl ? 0 : button_allocation.width);
2941
2942           if (!gtk_widget_has_focus (widget))
2943             gtk_widget_grab_focus (widget);
2944
2945           return TRUE;
2946         }
2947     }
2948   return FALSE;
2949 }
2950
2951 /* GtkWidget::button_release_event helper */
2952 static gboolean
2953 gtk_tree_view_button_release_drag_column (GtkWidget      *widget,
2954                                           GdkEventButton *event)
2955 {
2956   GtkTreeView *tree_view;
2957   GList *l;
2958   gboolean rtl;
2959
2960   tree_view = GTK_TREE_VIEW (widget);
2961
2962   rtl = (gtk_widget_get_direction (widget) == GTK_TEXT_DIR_RTL);
2963   gdk_display_pointer_ungrab (gtk_widget_get_display (widget), GDK_CURRENT_TIME);
2964   gdk_display_keyboard_ungrab (gtk_widget_get_display (widget), GDK_CURRENT_TIME);
2965
2966   /* Move the button back */
2967   g_object_ref (tree_view->priv->drag_column->button);
2968   gtk_container_remove (GTK_CONTAINER (tree_view), tree_view->priv->drag_column->button);
2969   gtk_widget_set_parent_window (tree_view->priv->drag_column->button, tree_view->priv->header_window);
2970   gtk_widget_set_parent (tree_view->priv->drag_column->button, GTK_WIDGET (tree_view));
2971   g_object_unref (tree_view->priv->drag_column->button);
2972   gtk_widget_queue_resize (widget);
2973   if (tree_view->priv->drag_column->resizable)
2974     {
2975       gdk_window_raise (tree_view->priv->drag_column->window);
2976       gdk_window_show (tree_view->priv->drag_column->window);
2977     }
2978   else
2979     gdk_window_hide (tree_view->priv->drag_column->window);
2980
2981   gtk_widget_grab_focus (tree_view->priv->drag_column->button);
2982
2983   if (rtl)
2984     {
2985       if (tree_view->priv->cur_reorder &&
2986           tree_view->priv->cur_reorder->right_column != tree_view->priv->drag_column)
2987         gtk_tree_view_move_column_after (tree_view, tree_view->priv->drag_column,
2988                                          tree_view->priv->cur_reorder->right_column);
2989     }
2990   else
2991     {
2992       if (tree_view->priv->cur_reorder &&
2993           tree_view->priv->cur_reorder->left_column != tree_view->priv->drag_column)
2994         gtk_tree_view_move_column_after (tree_view, tree_view->priv->drag_column,
2995                                          tree_view->priv->cur_reorder->left_column);
2996     }
2997   tree_view->priv->drag_column = NULL;
2998   gdk_window_hide (tree_view->priv->drag_window);
2999
3000   for (l = tree_view->priv->column_drag_info; l != NULL; l = l->next)
3001     g_slice_free (GtkTreeViewColumnReorder, l->data);
3002   g_list_free (tree_view->priv->column_drag_info);
3003   tree_view->priv->column_drag_info = NULL;
3004   tree_view->priv->cur_reorder = NULL;
3005
3006   if (tree_view->priv->drag_highlight_window)
3007     gdk_window_hide (tree_view->priv->drag_highlight_window);
3008
3009   /* Reset our flags */
3010   tree_view->priv->drag_column_window_state = DRAG_COLUMN_WINDOW_STATE_UNSET;
3011   GTK_TREE_VIEW_UNSET_FLAG (tree_view, GTK_TREE_VIEW_IN_COLUMN_DRAG);
3012
3013   return TRUE;
3014 }
3015
3016 /* GtkWidget::button_release_event helper */
3017 static gboolean
3018 gtk_tree_view_button_release_column_resize (GtkWidget      *widget,
3019                                             GdkEventButton *event)
3020 {
3021   GtkTreeView *tree_view;
3022   gpointer drag_data;
3023
3024   tree_view = GTK_TREE_VIEW (widget);
3025
3026   tree_view->priv->drag_pos = -1;
3027
3028   /* unblock attached dnd signal handler */
3029   drag_data = g_object_get_data (G_OBJECT (widget), "gtk-site-data");
3030   if (drag_data)
3031     g_signal_handlers_unblock_matched (widget,
3032                                        G_SIGNAL_MATCH_DATA,
3033                                        0, 0, NULL, NULL,
3034                                        drag_data);
3035
3036   GTK_TREE_VIEW_UNSET_FLAG (tree_view, GTK_TREE_VIEW_IN_COLUMN_RESIZE);
3037   gtk_grab_remove (widget);
3038   gdk_display_pointer_ungrab (gdk_window_get_display (event->window),
3039                               event->time);
3040   return TRUE;
3041 }
3042
3043 static gboolean
3044 gtk_tree_view_button_release (GtkWidget      *widget,
3045                               GdkEventButton *event)
3046 {
3047   GtkTreeView *tree_view = GTK_TREE_VIEW (widget);
3048
3049   if (GTK_TREE_VIEW_FLAG_SET (tree_view, GTK_TREE_VIEW_IN_COLUMN_DRAG))
3050     return gtk_tree_view_button_release_drag_column (widget, event);
3051
3052   if (tree_view->priv->rubber_band_status)
3053     gtk_tree_view_stop_rubber_band (tree_view);
3054
3055   if (tree_view->priv->pressed_button == event->button)
3056     tree_view->priv->pressed_button = -1;
3057
3058   if (GTK_TREE_VIEW_FLAG_SET (tree_view, GTK_TREE_VIEW_IN_COLUMN_RESIZE))
3059     return gtk_tree_view_button_release_column_resize (widget, event);
3060
3061   if (tree_view->priv->button_pressed_node == NULL)
3062     return FALSE;
3063
3064   if (event->button == 1)
3065     {
3066       gtk_grab_remove (widget);
3067       if (tree_view->priv->button_pressed_node == tree_view->priv->prelight_node &&
3068           GTK_TREE_VIEW_FLAG_SET (tree_view, GTK_TREE_VIEW_ARROW_PRELIT))
3069         {
3070           GtkTreePath *path = NULL;
3071
3072           path = _gtk_tree_view_find_path (tree_view,
3073                                            tree_view->priv->button_pressed_tree,
3074                                            tree_view->priv->button_pressed_node);
3075           /* Actually activate the node */
3076           if (tree_view->priv->button_pressed_node->children == NULL)
3077             gtk_tree_view_real_expand_row (tree_view, path,
3078                                            tree_view->priv->button_pressed_tree,
3079                                            tree_view->priv->button_pressed_node,
3080                                            FALSE, TRUE);
3081           else
3082             gtk_tree_view_real_collapse_row (GTK_TREE_VIEW (widget), path,
3083                                              tree_view->priv->button_pressed_tree,
3084                                              tree_view->priv->button_pressed_node, TRUE);
3085           gtk_tree_path_free (path);
3086         }
3087
3088       tree_view->priv->button_pressed_tree = NULL;
3089       tree_view->priv->button_pressed_node = NULL;
3090     }
3091
3092   return TRUE;
3093 }
3094
3095 static gboolean
3096 gtk_tree_view_grab_broken (GtkWidget          *widget,
3097                            GdkEventGrabBroken *event)
3098 {
3099   GtkTreeView *tree_view = GTK_TREE_VIEW (widget);
3100
3101   if (GTK_TREE_VIEW_FLAG_SET (tree_view, GTK_TREE_VIEW_IN_COLUMN_DRAG))
3102     gtk_tree_view_button_release_drag_column (widget, (GdkEventButton *)event);
3103
3104   if (GTK_TREE_VIEW_FLAG_SET (tree_view, GTK_TREE_VIEW_IN_COLUMN_RESIZE))
3105     gtk_tree_view_button_release_column_resize (widget, (GdkEventButton *)event);
3106
3107   return TRUE;
3108 }
3109
3110 #if 0
3111 static gboolean
3112 gtk_tree_view_configure (GtkWidget *widget,
3113                          GdkEventConfigure *event)
3114 {
3115   GtkTreeView *tree_view;
3116
3117   tree_view = GTK_TREE_VIEW (widget);
3118   tree_view->priv->search_position_func (tree_view, tree_view->priv->search_window);
3119
3120   return FALSE;
3121 }
3122 #endif
3123
3124 /* GtkWidget::motion_event function set.
3125  */
3126
3127 static gboolean
3128 coords_are_over_arrow (GtkTreeView *tree_view,
3129                        GtkRBTree   *tree,
3130                        GtkRBNode   *node,
3131                        /* these are in bin window coords */
3132                        gint         x,
3133                        gint         y)
3134 {
3135   GdkRectangle arrow;
3136   gint x2;
3137
3138   if (!gtk_widget_get_realized (GTK_WIDGET (tree_view)))
3139     return FALSE;
3140
3141   if ((node->flags & GTK_RBNODE_IS_PARENT) == 0)
3142     return FALSE;
3143
3144   arrow.y = BACKGROUND_FIRST_PIXEL (tree_view, tree, node);
3145
3146   arrow.height = ROW_HEIGHT (tree_view, BACKGROUND_HEIGHT (node));
3147
3148   gtk_tree_view_get_arrow_xrange (tree_view, tree, &arrow.x, &x2);
3149
3150   arrow.width = x2 - arrow.x;
3151
3152   return (x >= arrow.x &&
3153           x < (arrow.x + arrow.width) &&
3154           y >= arrow.y &&
3155           y < (arrow.y + arrow.height));
3156 }
3157
3158 static gboolean
3159 auto_expand_timeout (gpointer data)
3160 {
3161   GtkTreeView *tree_view = GTK_TREE_VIEW (data);
3162   GtkTreePath *path;
3163
3164   if (tree_view->priv->prelight_node)
3165     {
3166       path = _gtk_tree_view_find_path (tree_view,
3167                                        tree_view->priv->prelight_tree,
3168                                        tree_view->priv->prelight_node);
3169
3170       if (tree_view->priv->prelight_node->children)
3171         gtk_tree_view_collapse_row (tree_view, path);
3172       else
3173         gtk_tree_view_expand_row (tree_view, path, FALSE);
3174
3175       gtk_tree_path_free (path);
3176     }
3177
3178   tree_view->priv->auto_expand_timeout = 0;
3179
3180   return FALSE;
3181 }
3182
3183 static void
3184 remove_auto_expand_timeout (GtkTreeView *tree_view)
3185 {
3186   if (tree_view->priv->auto_expand_timeout != 0)
3187     {
3188       g_source_remove (tree_view->priv->auto_expand_timeout);
3189       tree_view->priv->auto_expand_timeout = 0;
3190     }
3191 }
3192
3193 static void
3194 do_prelight (GtkTreeView *tree_view,
3195              GtkRBTree   *tree,
3196              GtkRBNode   *node,
3197              /* these are in bin_window coords */
3198              gint         x,
3199              gint         y)
3200 {
3201   if (tree_view->priv->prelight_tree == tree &&
3202       tree_view->priv->prelight_node == node)
3203     {
3204       /*  We are still on the same node,
3205           but we might need to take care of the arrow  */
3206
3207       if (tree && node && TREE_VIEW_DRAW_EXPANDERS (tree_view))
3208         {
3209           gboolean over_arrow;
3210           gboolean flag_set;
3211
3212           over_arrow = coords_are_over_arrow (tree_view, tree, node, x, y);
3213           flag_set = GTK_TREE_VIEW_FLAG_SET (tree_view,
3214                                              GTK_TREE_VIEW_ARROW_PRELIT);
3215
3216           if (over_arrow != flag_set)
3217             {
3218               if (over_arrow)
3219                 GTK_TREE_VIEW_SET_FLAG (tree_view,
3220                                         GTK_TREE_VIEW_ARROW_PRELIT);
3221               else
3222                 GTK_TREE_VIEW_UNSET_FLAG (tree_view,
3223                                           GTK_TREE_VIEW_ARROW_PRELIT);
3224
3225               gtk_tree_view_queue_draw_arrow (tree_view, tree, node);
3226             }
3227         }
3228
3229       return;
3230     }
3231
3232   if (tree_view->priv->prelight_tree && tree_view->priv->prelight_node)
3233     {
3234       /*  Unprelight the old node and arrow  */
3235
3236       GTK_RBNODE_UNSET_FLAG (tree_view->priv->prelight_node,
3237                              GTK_RBNODE_IS_PRELIT);
3238
3239       if (GTK_TREE_VIEW_FLAG_SET (tree_view, GTK_TREE_VIEW_ARROW_PRELIT)
3240           && TREE_VIEW_DRAW_EXPANDERS (tree_view))
3241         {
3242           GTK_TREE_VIEW_UNSET_FLAG (tree_view, GTK_TREE_VIEW_ARROW_PRELIT);
3243
3244           gtk_tree_view_queue_draw_arrow (tree_view,
3245                                           tree_view->priv->prelight_tree,
3246                                           tree_view->priv->prelight_node);
3247         }
3248
3249       _gtk_tree_view_queue_draw_node (tree_view,
3250                                       tree_view->priv->prelight_tree,
3251                                       tree_view->priv->prelight_node,
3252                                       NULL);
3253     }
3254
3255
3256   if (tree_view->priv->hover_expand)
3257     remove_auto_expand_timeout (tree_view);
3258
3259   /*  Set the new prelight values  */
3260   tree_view->priv->prelight_node = node;
3261   tree_view->priv->prelight_tree = tree;
3262
3263   if (!node || !tree)
3264     return;
3265
3266   /*  Prelight the new node and arrow  */
3267
3268   if (TREE_VIEW_DRAW_EXPANDERS (tree_view)
3269       && coords_are_over_arrow (tree_view, tree, node, x, y))
3270     {
3271       GTK_TREE_VIEW_SET_FLAG (tree_view, GTK_TREE_VIEW_ARROW_PRELIT);
3272
3273       gtk_tree_view_queue_draw_arrow (tree_view, tree, node);
3274     }
3275
3276   GTK_RBNODE_SET_FLAG (node, GTK_RBNODE_IS_PRELIT);
3277
3278   _gtk_tree_view_queue_draw_node (tree_view, tree, node, NULL);
3279
3280   if (tree_view->priv->hover_expand)
3281     {
3282       tree_view->priv->auto_expand_timeout =
3283         gdk_threads_add_timeout (AUTO_EXPAND_TIMEOUT, auto_expand_timeout, tree_view);
3284     }
3285 }
3286
3287 static void
3288 prelight_or_select (GtkTreeView *tree_view,
3289                     GtkRBTree   *tree,
3290                     GtkRBNode   *node,
3291                     /* these are in bin_window coords */
3292                     gint         x,
3293                     gint         y)
3294 {
3295   GtkSelectionMode mode = gtk_tree_selection_get_mode (tree_view->priv->selection);
3296
3297   if (tree_view->priv->hover_selection &&
3298       (mode == GTK_SELECTION_SINGLE || mode == GTK_SELECTION_BROWSE) &&
3299       !(tree_view->priv->edited_column &&
3300         tree_view->priv->edited_column->editable_widget))
3301     {
3302       if (node)
3303         {
3304           if (!GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_SELECTED))
3305             {
3306               GtkTreePath *path;
3307
3308               path = _gtk_tree_view_find_path (tree_view, tree, node);
3309               gtk_tree_selection_select_path (tree_view->priv->selection, path);
3310               if (GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_SELECTED))
3311                 {
3312                   GTK_TREE_VIEW_UNSET_FLAG (tree_view, GTK_TREE_VIEW_DRAW_KEYFOCUS);
3313                   gtk_tree_view_real_set_cursor (tree_view, path, FALSE, FALSE);
3314                 }
3315               gtk_tree_path_free (path);
3316             }
3317         }
3318
3319       else if (mode == GTK_SELECTION_SINGLE)
3320         gtk_tree_selection_unselect_all (tree_view->priv->selection);
3321     }
3322
3323     do_prelight (tree_view, tree, node, x, y);
3324 }
3325
3326 static void
3327 ensure_unprelighted (GtkTreeView *tree_view)
3328 {
3329   do_prelight (tree_view,
3330                NULL, NULL,
3331                -1000, -1000); /* coords not possibly over an arrow */
3332
3333   g_assert (tree_view->priv->prelight_node == NULL);
3334 }
3335
3336 static void
3337 update_prelight (GtkTreeView *tree_view,
3338                  gint         x,
3339                  gint         y)
3340 {
3341   int new_y;
3342   GtkRBTree *tree;
3343   GtkRBNode *node;
3344
3345   if (tree_view->priv->tree == NULL)
3346     return;
3347
3348   if (x == -10000)
3349     {
3350       ensure_unprelighted (tree_view);
3351       return;
3352     }
3353
3354   new_y = TREE_WINDOW_Y_TO_RBTREE_Y (tree_view, y);
3355   if (new_y < 0)
3356     new_y = 0;
3357
3358   _gtk_rbtree_find_offset (tree_view->priv->tree,
3359                            new_y, &tree, &node);
3360
3361   if (node)
3362     prelight_or_select (tree_view, tree, node, x, y);
3363 }
3364
3365
3366
3367
3368 /* Our motion arrow is either a box (in the case of the original spot)
3369  * or an arrow.  It is expander_size wide.
3370  */
3371 /*
3372  * 11111111111111
3373  * 01111111111110
3374  * 00111111111100
3375  * 00011111111000
3376  * 00001111110000
3377  * 00000111100000
3378  * 00000111100000
3379  * 00000111100000
3380  * ~ ~ ~ ~ ~ ~ ~
3381  * 00000111100000
3382  * 00000111100000
3383  * 00000111100000
3384  * 00001111110000
3385  * 00011111111000
3386  * 00111111111100
3387  * 01111111111110
3388  * 11111111111111
3389  */
3390
3391 static void
3392 gtk_tree_view_motion_draw_column_motion_arrow (GtkTreeView *tree_view)
3393 {
3394   GtkTreeViewColumnReorder *reorder = tree_view->priv->cur_reorder;
3395   GtkWidget *widget = GTK_WIDGET (tree_view);
3396   cairo_surface_t *mask_image;
3397   cairo_region_t *mask_region;
3398   gint x;
3399   gint y;
3400   gint width;
3401   gint height;
3402   gint arrow_type = DRAG_COLUMN_WINDOW_STATE_UNSET;
3403   GdkWindowAttr attributes;
3404   guint attributes_mask;
3405   cairo_t *cr;
3406
3407   if (!reorder ||
3408       reorder->left_column == tree_view->priv->drag_column ||
3409       reorder->right_column == tree_view->priv->drag_column)
3410     arrow_type = DRAG_COLUMN_WINDOW_STATE_ORIGINAL;
3411   else if (reorder->left_column || reorder->right_column)
3412     {
3413       GtkAllocation left_allocation, right_allocation;
3414       GdkRectangle visible_rect;
3415
3416       gtk_tree_view_get_visible_rect (tree_view, &visible_rect);
3417       if (reorder->left_column)
3418         {
3419           gtk_widget_get_allocation (reorder->left_column->button, &left_allocation);
3420           x = left_allocation.x + left_allocation.width;
3421         }
3422       else
3423         {
3424           gtk_widget_get_allocation (reorder->right_column->button, &right_allocation);
3425           x = right_allocation.x;
3426         }
3427
3428       if (x < visible_rect.x)
3429         arrow_type = DRAG_COLUMN_WINDOW_STATE_ARROW_LEFT;
3430       else if (x > visible_rect.x + visible_rect.width)
3431         arrow_type = DRAG_COLUMN_WINDOW_STATE_ARROW_RIGHT;
3432       else
3433         arrow_type = DRAG_COLUMN_WINDOW_STATE_ARROW;
3434     }
3435
3436   /* We want to draw the rectangle over the initial location. */
3437   if (arrow_type == DRAG_COLUMN_WINDOW_STATE_ORIGINAL)
3438     {
3439       if (tree_view->priv->drag_column_window_state != DRAG_COLUMN_WINDOW_STATE_ORIGINAL)
3440         {
3441           GtkAllocation drag_allocation;
3442
3443           if (tree_view->priv->drag_highlight_window)
3444             {
3445               gdk_window_set_user_data (tree_view->priv->drag_highlight_window,
3446                                         NULL);
3447               gdk_window_destroy (tree_view->priv->drag_highlight_window);
3448             }
3449
3450           attributes.window_type = GDK_WINDOW_CHILD;
3451           attributes.wclass = GDK_INPUT_OUTPUT;
3452           attributes.x = tree_view->priv->drag_column_x;
3453           attributes.y = 0;
3454           gtk_widget_get_allocation (tree_view->priv->drag_column->button, &drag_allocation);
3455           width = attributes.width = drag_allocation.width;
3456           height = attributes.height = drag_allocation.height;
3457           attributes.visual = gtk_widget_get_visual (GTK_WIDGET (tree_view));
3458           attributes.event_mask = GDK_VISIBILITY_NOTIFY_MASK | GDK_EXPOSURE_MASK | GDK_POINTER_MOTION_MASK;
3459           attributes_mask = GDK_WA_X | GDK_WA_Y | GDK_WA_VISUAL;
3460           tree_view->priv->drag_highlight_window = gdk_window_new (tree_view->priv->header_window, &attributes, attributes_mask);
3461           gdk_window_set_user_data (tree_view->priv->drag_highlight_window, GTK_WIDGET (tree_view));
3462
3463           mask_image = cairo_image_surface_create (CAIRO_FORMAT_A1, width, height);
3464           cr = cairo_create (mask_image);
3465
3466           cairo_rectangle (cr, 1, 1, width - 2, height - 2);
3467           cairo_stroke (cr);
3468           cairo_destroy (cr);
3469
3470           mask_region = gdk_cairo_region_create_from_surface (mask_image);
3471           gdk_window_shape_combine_region (tree_view->priv->drag_highlight_window,
3472                                            mask_region, 0, 0);
3473
3474           cairo_region_destroy (mask_region);
3475           cairo_surface_destroy (mask_image);
3476
3477           tree_view->priv->drag_column_window_state = DRAG_COLUMN_WINDOW_STATE_ORIGINAL;
3478         }
3479     }
3480   else if (arrow_type == DRAG_COLUMN_WINDOW_STATE_ARROW)
3481     {
3482       GtkAllocation button_allocation;
3483
3484       width = tree_view->priv->expander_size;
3485
3486       /* Get x, y, width, height of arrow */
3487       gdk_window_get_origin (tree_view->priv->header_window, &x, &y);
3488       if (reorder->left_column)
3489         {
3490           gtk_widget_get_allocation (reorder->left_column->button, &button_allocation);
3491           x += button_allocation.x + button_allocation.width - width/2;
3492           height = button_allocation.height;
3493         }
3494       else
3495         {
3496           gtk_widget_get_allocation (reorder->right_column->button, &button_allocation);
3497           x += button_allocation.x - width/2;
3498           height = button_allocation.height;
3499         }
3500       y -= tree_view->priv->expander_size/2; /* The arrow takes up only half the space */
3501       height += tree_view->priv->expander_size;
3502
3503       /* Create the new window */
3504       if (tree_view->priv->drag_column_window_state != DRAG_COLUMN_WINDOW_STATE_ARROW)
3505         {
3506           if (tree_view->priv->drag_highlight_window)
3507             {
3508               gdk_window_set_user_data (tree_view->priv->drag_highlight_window,
3509                                         NULL);
3510               gdk_window_destroy (tree_view->priv->drag_highlight_window);
3511             }
3512
3513           attributes.window_type = GDK_WINDOW_TEMP;
3514           attributes.wclass = GDK_INPUT_OUTPUT;
3515           attributes.visual = gtk_widget_get_visual (GTK_WIDGET (tree_view));
3516           attributes.event_mask = GDK_VISIBILITY_NOTIFY_MASK | GDK_EXPOSURE_MASK | GDK_POINTER_MOTION_MASK;
3517           attributes_mask = GDK_WA_X | GDK_WA_Y | GDK_WA_VISUAL;
3518           attributes.x = x;
3519           attributes.y = y;
3520           attributes.width = width;
3521           attributes.height = height;
3522           tree_view->priv->drag_highlight_window = gdk_window_new (gtk_widget_get_root_window (widget),
3523                                                                    &attributes, attributes_mask);
3524           gdk_window_set_user_data (tree_view->priv->drag_highlight_window, GTK_WIDGET (tree_view));
3525
3526           mask_image = cairo_image_surface_create (CAIRO_FORMAT_A1, width, height);
3527
3528           cr = cairo_create (mask_image);
3529           cairo_move_to (cr, 0, 0);
3530           cairo_line_to (cr, width, 0);
3531           cairo_line_to (cr, width / 2., width / 2);
3532           cairo_move_to (cr, 0, height);
3533           cairo_line_to (cr, width, height);
3534           cairo_line_to (cr, width / 2., height - width / 2.);
3535           cairo_fill (cr);
3536           cairo_destroy (cr);
3537
3538           mask_region = gdk_cairo_region_create_from_surface (mask_image);
3539           gdk_window_shape_combine_region (tree_view->priv->drag_highlight_window,
3540                                            mask_region, 0, 0);
3541
3542           cairo_region_destroy (mask_region);
3543           cairo_surface_destroy (mask_image);
3544         }
3545
3546       tree_view->priv->drag_column_window_state = DRAG_COLUMN_WINDOW_STATE_ARROW;
3547       gdk_window_move (tree_view->priv->drag_highlight_window, x, y);
3548     }
3549   else if (arrow_type == DRAG_COLUMN_WINDOW_STATE_ARROW_LEFT ||
3550            arrow_type == DRAG_COLUMN_WINDOW_STATE_ARROW_RIGHT)
3551     {
3552       GtkAllocation allocation;
3553
3554       width = tree_view->priv->expander_size;
3555
3556       /* Get x, y, width, height of arrow */
3557       width = width/2; /* remember, the arrow only takes half the available width */
3558       gdk_window_get_origin (gtk_widget_get_window (widget),
3559                              &x, &y);
3560       if (arrow_type == DRAG_COLUMN_WINDOW_STATE_ARROW_RIGHT)
3561         {
3562           gtk_widget_get_allocation (widget, &allocation);
3563           x += allocation.width - width;
3564         }
3565
3566       if (reorder->left_column)
3567         {
3568           gtk_widget_get_allocation (reorder->left_column->button, &allocation);
3569           height = allocation.height;
3570         }
3571       else
3572         {
3573           gtk_widget_get_allocation (reorder->right_column->button, &allocation);
3574           height = allocation.height;
3575         }
3576
3577       y -= tree_view->priv->expander_size;
3578       height += 2*tree_view->priv->expander_size;
3579
3580       /* Create the new window */
3581       if (tree_view->priv->drag_column_window_state != DRAG_COLUMN_WINDOW_STATE_ARROW_LEFT &&
3582           tree_view->priv->drag_column_window_state != DRAG_COLUMN_WINDOW_STATE_ARROW_RIGHT)
3583         {
3584           if (tree_view->priv->drag_highlight_window)
3585             {
3586               gdk_window_set_user_data (tree_view->priv->drag_highlight_window,
3587                                         NULL);
3588               gdk_window_destroy (tree_view->priv->drag_highlight_window);
3589             }
3590
3591           attributes.window_type = GDK_WINDOW_TEMP;
3592           attributes.wclass = GDK_INPUT_OUTPUT;
3593           attributes.visual = gtk_widget_get_visual (GTK_WIDGET (tree_view));
3594           attributes.event_mask = GDK_VISIBILITY_NOTIFY_MASK | GDK_EXPOSURE_MASK | GDK_POINTER_MOTION_MASK;
3595           attributes_mask = GDK_WA_X | GDK_WA_Y | GDK_WA_VISUAL;
3596           attributes.x = x;
3597           attributes.y = y;
3598           attributes.width = width;
3599           attributes.height = height;
3600           tree_view->priv->drag_highlight_window = gdk_window_new (NULL, &attributes, attributes_mask);
3601           gdk_window_set_user_data (tree_view->priv->drag_highlight_window, GTK_WIDGET (tree_view));
3602
3603           mask_image = cairo_image_surface_create (CAIRO_FORMAT_A1, width, height);
3604
3605           cr = cairo_create (mask_image);
3606           /* mirror if we're on the left */
3607           if (arrow_type == DRAG_COLUMN_WINDOW_STATE_ARROW_LEFT)
3608             {
3609               cairo_translate (cr, width, 0);
3610               cairo_scale (cr, -1, 1);
3611             }
3612           cairo_move_to (cr, 0, 0);
3613           cairo_line_to (cr, width, width);
3614           cairo_line_to (cr, 0, tree_view->priv->expander_size);
3615           cairo_move_to (cr, 0, height);
3616           cairo_line_to (cr, width, height - width);
3617           cairo_line_to (cr, 0, height - tree_view->priv->expander_size);
3618           cairo_fill (cr);
3619           cairo_destroy (cr);
3620
3621           mask_region = gdk_cairo_region_create_from_surface (mask_image);
3622           gdk_window_shape_combine_region (tree_view->priv->drag_highlight_window,
3623                                            mask_region, 0, 0);
3624
3625           cairo_region_destroy (mask_region);
3626           cairo_surface_destroy (mask_image);
3627         }
3628
3629       tree_view->priv->drag_column_window_state = arrow_type;
3630       gdk_window_move (tree_view->priv->drag_highlight_window, x, y);
3631    }
3632   else
3633     {
3634       g_warning (G_STRLOC"Invalid GtkTreeViewColumnReorder struct");
3635       gdk_window_hide (tree_view->priv->drag_highlight_window);
3636       return;
3637     }
3638
3639   gdk_window_show (tree_view->priv->drag_highlight_window);
3640   gdk_window_raise (tree_view->priv->drag_highlight_window);
3641 }
3642
3643 static gboolean
3644 gtk_tree_view_motion_resize_column (GtkWidget      *widget,
3645                                     GdkEventMotion *event)
3646 {
3647   gint x;
3648   gint new_width;
3649   GtkTreeViewColumn *column;
3650   GtkTreeView *tree_view = GTK_TREE_VIEW (widget);
3651
3652   column = gtk_tree_view_get_column (tree_view, tree_view->priv->drag_pos);
3653
3654   if (event->is_hint || event->window != gtk_widget_get_window (widget))
3655     gtk_widget_get_pointer (widget, &x, NULL);
3656   else
3657     x = event->x;
3658
3659   if (tree_view->priv->hadjustment)
3660     x += tree_view->priv->hadjustment->value;
3661
3662   new_width = gtk_tree_view_new_column_width (tree_view,
3663                                               tree_view->priv->drag_pos, &x);
3664   if (x != tree_view->priv->x_drag &&
3665       (new_width != column->fixed_width))
3666     {
3667       column->use_resized_width = TRUE;
3668       column->resized_width = new_width;
3669       if (column->expand)
3670         column->resized_width -= tree_view->priv->last_extra_space_per_column;
3671       gtk_widget_queue_resize (widget);
3672     }
3673
3674   return FALSE;
3675 }
3676
3677
3678 static void
3679 gtk_tree_view_update_current_reorder (GtkTreeView *tree_view)
3680 {
3681   GtkTreeViewColumnReorder *reorder = NULL;
3682   GList *list;
3683   gint mouse_x;
3684
3685   gdk_window_get_pointer (tree_view->priv->header_window, &mouse_x, NULL, NULL);
3686   for (list = tree_view->priv->column_drag_info; list; list = list->next)
3687     {
3688       reorder = (GtkTreeViewColumnReorder *) list->data;
3689       if (mouse_x >= reorder->left_align && mouse_x < reorder->right_align)
3690         break;
3691       reorder = NULL;
3692     }
3693
3694   /*  if (reorder && reorder == tree_view->priv->cur_reorder)
3695       return;*/
3696
3697   tree_view->priv->cur_reorder = reorder;
3698   gtk_tree_view_motion_draw_column_motion_arrow (tree_view);
3699 }
3700
3701 static void
3702 gtk_tree_view_vertical_autoscroll (GtkTreeView *tree_view)
3703 {
3704   GdkRectangle visible_rect;
3705   gint y;
3706   gint offset;
3707
3708   gdk_window_get_pointer (tree_view->priv->bin_window, NULL, &y, NULL);
3709   y += tree_view->priv->dy;
3710
3711   gtk_tree_view_get_visible_rect (tree_view, &visible_rect);
3712
3713   /* see if we are near the edge. */
3714   offset = y - (visible_rect.y + 2 * SCROLL_EDGE_SIZE);
3715   if (offset > 0)
3716     {
3717       offset = y - (visible_rect.y + visible_rect.height - 2 * SCROLL_EDGE_SIZE);
3718       if (offset < 0)
3719         return;
3720     }
3721
3722   gtk_adjustment_set_value (tree_view->priv->vadjustment,
3723                             MAX (tree_view->priv->vadjustment->value + offset, 0.0));
3724 }
3725
3726 static gboolean
3727 gtk_tree_view_horizontal_autoscroll (GtkTreeView *tree_view)
3728 {
3729   GdkRectangle visible_rect;
3730   gint x;
3731   gint offset;
3732
3733   gdk_window_get_pointer (tree_view->priv->bin_window, &x, NULL, NULL);
3734
3735   gtk_tree_view_get_visible_rect (tree_view, &visible_rect);
3736
3737   /* See if we are near the edge. */
3738   offset = x - (visible_rect.x + SCROLL_EDGE_SIZE);
3739   if (offset > 0)
3740     {
3741       offset = x - (visible_rect.x + visible_rect.width - SCROLL_EDGE_SIZE);
3742       if (offset < 0)
3743         return TRUE;
3744     }
3745   offset = offset/3;
3746
3747   gtk_adjustment_set_value (tree_view->priv->hadjustment,
3748                             MAX (tree_view->priv->hadjustment->value + offset, 0.0));
3749
3750   return TRUE;
3751
3752 }
3753
3754 static gboolean
3755 gtk_tree_view_motion_drag_column (GtkWidget      *widget,
3756                                   GdkEventMotion *event)
3757 {
3758   GtkAllocation allocation, button_allocation;
3759   GtkTreeView *tree_view = (GtkTreeView *) widget;
3760   GtkTreeViewColumn *column = tree_view->priv->drag_column;
3761   gint x, y;
3762
3763   /* Sanity Check */
3764   if ((column == NULL) ||
3765       (event->window != tree_view->priv->drag_window))
3766     return FALSE;
3767
3768   /* Handle moving the header */
3769   gdk_window_get_position (tree_view->priv->drag_window, &x, &y);
3770   gtk_widget_get_allocation (widget, &allocation);
3771   gtk_widget_get_allocation (column->button, &button_allocation);
3772   x = CLAMP (x + (gint)event->x - column->drag_x, 0,
3773              MAX (tree_view->priv->width, allocation.width) - button_allocation.width);
3774   gdk_window_move (tree_view->priv->drag_window, x, y);
3775
3776   /* autoscroll, if needed */
3777   gtk_tree_view_horizontal_autoscroll (tree_view);
3778   /* Update the current reorder position and arrow; */
3779   gtk_tree_view_update_current_reorder (tree_view);
3780
3781   return TRUE;
3782 }
3783
3784 static void
3785 gtk_tree_view_stop_rubber_band (GtkTreeView *tree_view)
3786 {
3787   remove_scroll_timeout (tree_view);
3788   gtk_grab_remove (GTK_WIDGET (tree_view));
3789
3790   if (tree_view->priv->rubber_band_status == RUBBER_BAND_ACTIVE)
3791     {
3792       GtkTreePath *tmp_path;
3793
3794       gtk_widget_queue_draw (GTK_WIDGET (tree_view));
3795
3796       /* The anchor path should be set to the start path */
3797       tmp_path = _gtk_tree_view_find_path (tree_view,
3798                                            tree_view->priv->rubber_band_start_tree,
3799                                            tree_view->priv->rubber_band_start_node);
3800
3801       if (tree_view->priv->anchor)
3802         gtk_tree_row_reference_free (tree_view->priv->anchor);
3803
3804       tree_view->priv->anchor =
3805         gtk_tree_row_reference_new_proxy (G_OBJECT (tree_view),
3806                                           tree_view->priv->model,
3807                                           tmp_path);
3808
3809       gtk_tree_path_free (tmp_path);
3810
3811       /* ... and the cursor to the end path */
3812       tmp_path = _gtk_tree_view_find_path (tree_view,
3813                                            tree_view->priv->rubber_band_end_tree,
3814                                            tree_view->priv->rubber_band_end_node);
3815       gtk_tree_view_real_set_cursor (GTK_TREE_VIEW (tree_view), tmp_path, FALSE, FALSE);
3816       gtk_tree_path_free (tmp_path);
3817
3818       _gtk_tree_selection_emit_changed (tree_view->priv->selection);
3819     }
3820
3821   /* Clear status variables */
3822   tree_view->priv->rubber_band_status = RUBBER_BAND_OFF;
3823   tree_view->priv->rubber_band_shift = 0;
3824   tree_view->priv->rubber_band_ctrl = 0;
3825
3826   tree_view->priv->rubber_band_start_node = NULL;
3827   tree_view->priv->rubber_band_start_tree = NULL;
3828   tree_view->priv->rubber_band_end_node = NULL;
3829   tree_view->priv->rubber_band_end_tree = NULL;
3830 }
3831
3832 static void
3833 gtk_tree_view_update_rubber_band_selection_range (GtkTreeView *tree_view,
3834                                                  GtkRBTree   *start_tree,
3835                                                  GtkRBNode   *start_node,
3836                                                  GtkRBTree   *end_tree,
3837                                                  GtkRBNode   *end_node,
3838                                                  gboolean     select,
3839                                                  gboolean     skip_start,
3840                                                  gboolean     skip_end)
3841 {
3842   if (start_node == end_node)
3843     return;
3844
3845   /* We skip the first node and jump inside the loop */
3846   if (skip_start)
3847     goto skip_first;
3848
3849   do
3850     {
3851       /* Small optimization by assuming insensitive nodes are never
3852        * selected.
3853        */
3854       if (!GTK_RBNODE_FLAG_SET (start_node, GTK_RBNODE_IS_SELECTED))
3855         {
3856           GtkTreePath *path;
3857           gboolean selectable;
3858
3859           path = _gtk_tree_view_find_path (tree_view, start_tree, start_node);
3860           selectable = _gtk_tree_selection_row_is_selectable (tree_view->priv->selection, start_node, path);
3861           gtk_tree_path_free (path);
3862
3863           if (!selectable)
3864             goto node_not_selectable;
3865         }
3866
3867       if (select)
3868         {
3869           if (tree_view->priv->rubber_band_shift)
3870             GTK_RBNODE_SET_FLAG (start_node, GTK_RBNODE_IS_SELECTED);
3871           else if (tree_view->priv->rubber_band_ctrl)
3872             {
3873               /* Toggle the selection state */
3874               if (GTK_RBNODE_FLAG_SET (start_node, GTK_RBNODE_IS_SELECTED))
3875                 GTK_RBNODE_UNSET_FLAG (start_node, GTK_RBNODE_IS_SELECTED);
3876               else
3877                 GTK_RBNODE_SET_FLAG (start_node, GTK_RBNODE_IS_SELECTED);
3878             }
3879           else
3880             GTK_RBNODE_SET_FLAG (start_node, GTK_RBNODE_IS_SELECTED);
3881         }
3882       else
3883         {
3884           /* Mirror the above */
3885           if (tree_view->priv->rubber_band_shift)
3886             GTK_RBNODE_UNSET_FLAG (start_node, GTK_RBNODE_IS_SELECTED);
3887           else if (tree_view->priv->rubber_band_ctrl)
3888             {
3889               /* Toggle the selection state */
3890               if (GTK_RBNODE_FLAG_SET (start_node, GTK_RBNODE_IS_SELECTED))
3891                 GTK_RBNODE_UNSET_FLAG (start_node, GTK_RBNODE_IS_SELECTED);
3892               else
3893                 GTK_RBNODE_SET_FLAG (start_node, GTK_RBNODE_IS_SELECTED);
3894             }
3895           else
3896             GTK_RBNODE_UNSET_FLAG (start_node, GTK_RBNODE_IS_SELECTED);
3897         }
3898
3899       _gtk_tree_view_queue_draw_node (tree_view, start_tree, start_node, NULL);
3900
3901 node_not_selectable:
3902       if (start_node == end_node)
3903         break;
3904
3905 skip_first:
3906
3907       if (start_node->children)
3908         {
3909           start_tree = start_node->children;
3910           start_node = start_tree->root;
3911           while (start_node->left != start_tree->nil)
3912             start_node = start_node->left;
3913         }
3914       else
3915         {
3916           _gtk_rbtree_next_full (start_tree, start_node, &start_tree, &start_node);
3917
3918           if (!start_tree)
3919             /* Ran out of tree */
3920             break;
3921         }
3922
3923       if (skip_end && start_node == end_node)
3924         break;
3925     }
3926   while (TRUE);
3927 }
3928
3929 static void
3930 gtk_tree_view_update_rubber_band_selection (GtkTreeView *tree_view)
3931 {
3932   GtkRBTree *start_tree, *end_tree;
3933   GtkRBNode *start_node, *end_node;
3934
3935   _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);
3936   _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);
3937
3938   /* Handle the start area first */
3939   if (!tree_view->priv->rubber_band_start_node)
3940     {
3941       gtk_tree_view_update_rubber_band_selection_range (tree_view,
3942                                                        start_tree,
3943                                                        start_node,
3944                                                        end_tree,
3945                                                        end_node,
3946                                                        TRUE,
3947                                                        FALSE,
3948                                                        FALSE);
3949     }
3950   else if (_gtk_rbtree_node_find_offset (start_tree, start_node) <
3951            _gtk_rbtree_node_find_offset (tree_view->priv->rubber_band_start_tree, tree_view->priv->rubber_band_start_node))
3952     {
3953       /* New node is above the old one; selection became bigger */
3954       gtk_tree_view_update_rubber_band_selection_range (tree_view,
3955                                                        start_tree,
3956                                                        start_node,
3957                                                        tree_view->priv->rubber_band_start_tree,
3958                                                        tree_view->priv->rubber_band_start_node,
3959                                                        TRUE,
3960                                                        FALSE,
3961                                                        TRUE);
3962     }
3963   else if (_gtk_rbtree_node_find_offset (start_tree, start_node) >
3964            _gtk_rbtree_node_find_offset (tree_view->priv->rubber_band_start_tree, tree_view->priv->rubber_band_start_node))
3965     {
3966       /* New node is below the old one; selection became smaller */
3967       gtk_tree_view_update_rubber_band_selection_range (tree_view,
3968                                                        tree_view->priv->rubber_band_start_tree,
3969                                                        tree_view->priv->rubber_band_start_node,
3970                                                        start_tree,
3971                                                        start_node,
3972                                                        FALSE,
3973                                                        FALSE,
3974                                                        TRUE);
3975     }
3976
3977   tree_view->priv->rubber_band_start_tree = start_tree;
3978   tree_view->priv->rubber_band_start_node = start_node;
3979
3980   /* Next, handle the end area */
3981   if (!tree_view->priv->rubber_band_end_node)
3982     {
3983       /* In the event this happens, start_node was also NULL; this case is
3984        * handled above.
3985        */
3986     }
3987   else if (!end_node)
3988     {
3989       /* Find the last node in the tree */
3990       _gtk_rbtree_find_offset (tree_view->priv->tree, tree_view->priv->height - 1,
3991                                &end_tree, &end_node);
3992
3993       /* Selection reached end of the tree */
3994       gtk_tree_view_update_rubber_band_selection_range (tree_view,
3995                                                        tree_view->priv->rubber_band_end_tree,
3996                                                        tree_view->priv->rubber_band_end_node,
3997                                                        end_tree,
3998                                                        end_node,
3999                                                        TRUE,
4000                                                        TRUE,
4001                                                        FALSE);
4002     }
4003   else if (_gtk_rbtree_node_find_offset (end_tree, end_node) >
4004            _gtk_rbtree_node_find_offset (tree_view->priv->rubber_band_end_tree, tree_view->priv->rubber_band_end_node))
4005     {
4006       /* New node is below the old one; selection became bigger */
4007       gtk_tree_view_update_rubber_band_selection_range (tree_view,
4008                                                        tree_view->priv->rubber_band_end_tree,
4009                                                        tree_view->priv->rubber_band_end_node,
4010                                                        end_tree,
4011                                                        end_node,
4012                                                        TRUE,
4013                                                        TRUE,
4014                                                        FALSE);
4015     }
4016   else if (_gtk_rbtree_node_find_offset (end_tree, end_node) <
4017            _gtk_rbtree_node_find_offset (tree_view->priv->rubber_band_end_tree, tree_view->priv->rubber_band_end_node))
4018     {
4019       /* New node is above the old one; selection became smaller */
4020       gtk_tree_view_update_rubber_band_selection_range (tree_view,
4021                                                        end_tree,
4022                                                        end_node,
4023                                                        tree_view->priv->rubber_band_end_tree,
4024                                                        tree_view->priv->rubber_band_end_node,
4025                                                        FALSE,
4026                                                        TRUE,
4027                                                        FALSE);
4028     }
4029
4030   tree_view->priv->rubber_band_end_tree = end_tree;
4031   tree_view->priv->rubber_band_end_node = end_node;
4032 }
4033
4034 static void
4035 gtk_tree_view_update_rubber_band (GtkTreeView *tree_view)
4036 {
4037   gint x, y;
4038   GdkRectangle old_area;
4039   GdkRectangle new_area;
4040   GdkRectangle common;
4041   cairo_region_t *invalid_region;
4042
4043   old_area.x = MIN (tree_view->priv->press_start_x, tree_view->priv->rubber_band_x);
4044   old_area.y = MIN (tree_view->priv->press_start_y, tree_view->priv->rubber_band_y) - tree_view->priv->dy;
4045   old_area.width = ABS (tree_view->priv->rubber_band_x - tree_view->priv->press_start_x) + 1;
4046   old_area.height = ABS (tree_view->priv->rubber_band_y - tree_view->priv->press_start_y) + 1;
4047
4048   gdk_window_get_pointer (tree_view->priv->bin_window, &x, &y, NULL);
4049
4050   x = MAX (x, 0);
4051   y = MAX (y, 0) + tree_view->priv->dy;
4052
4053   new_area.x = MIN (tree_view->priv->press_start_x, x);
4054   new_area.y = MIN (tree_view->priv->press_start_y, y) - tree_view->priv->dy;
4055   new_area.width = ABS (x - tree_view->priv->press_start_x) + 1;
4056   new_area.height = ABS (y - tree_view->priv->press_start_y) + 1;
4057
4058   invalid_region = cairo_region_create_rectangle (&old_area);
4059   cairo_region_union_rectangle (invalid_region, &new_area);
4060
4061   gdk_rectangle_intersect (&old_area, &new_area, &common);
4062   if (common.width > 2 && common.height > 2)
4063     {
4064       cairo_region_t *common_region;
4065
4066       /* make sure the border is invalidated */
4067       common.x += 1;
4068       common.y += 1;
4069       common.width -= 2;
4070       common.height -= 2;
4071
4072       common_region = cairo_region_create_rectangle (&common);
4073
4074       cairo_region_subtract (invalid_region, common_region);
4075       cairo_region_destroy (common_region);
4076     }
4077
4078   gdk_window_invalidate_region (tree_view->priv->bin_window, invalid_region, TRUE);
4079
4080   cairo_region_destroy (invalid_region);
4081
4082   tree_view->priv->rubber_band_x = x;
4083   tree_view->priv->rubber_band_y = y;
4084
4085   gtk_tree_view_update_rubber_band_selection (tree_view);
4086 }
4087
4088 static void
4089 gtk_tree_view_paint_rubber_band (GtkTreeView  *tree_view,
4090                                  cairo_t      *cr)
4091 {
4092   GdkRectangle rect;
4093   GtkStyle *style;
4094
4095   cairo_save (cr);
4096
4097   rect.x = MIN (tree_view->priv->press_start_x, tree_view->priv->rubber_band_x);
4098   rect.y = MIN (tree_view->priv->press_start_y, tree_view->priv->rubber_band_y) - tree_view->priv->dy;
4099   rect.width = ABS (tree_view->priv->press_start_x - tree_view->priv->rubber_band_x) + 1;
4100   rect.height = ABS (tree_view->priv->press_start_y - tree_view->priv->rubber_band_y) + 1;
4101
4102   cairo_set_line_width (cr, 1.0);
4103
4104   style = gtk_widget_get_style (GTK_WIDGET (tree_view));
4105
4106   gdk_cairo_set_source_color (cr, &style->fg[GTK_STATE_NORMAL]);
4107
4108   gdk_cairo_rectangle (cr, &rect);
4109   cairo_clip (cr);
4110   cairo_paint_with_alpha (cr, 0.25);
4111
4112   cairo_rectangle (cr,
4113                    rect.x + 0.5, rect.y + 0.5,
4114                    rect.width - 1, rect.height - 1);
4115   cairo_stroke (cr);
4116
4117   cairo_restore (cr);
4118 }
4119
4120 static gboolean
4121 gtk_tree_view_motion_bin_window (GtkWidget      *widget,
4122                                  GdkEventMotion *event)
4123 {
4124   GtkTreeView *tree_view;
4125   GtkRBTree *tree;
4126   GtkRBNode *node;
4127   gint new_y;
4128
4129   tree_view = (GtkTreeView *) widget;
4130
4131   if (tree_view->priv->tree == NULL)
4132     return FALSE;
4133
4134   if (tree_view->priv->rubber_band_status == RUBBER_BAND_MAYBE_START)
4135     {
4136       gtk_grab_add (GTK_WIDGET (tree_view));
4137       gtk_tree_view_update_rubber_band (tree_view);
4138
4139       tree_view->priv->rubber_band_status = RUBBER_BAND_ACTIVE;
4140     }
4141   else if (tree_view->priv->rubber_band_status == RUBBER_BAND_ACTIVE)
4142     {
4143       gtk_tree_view_update_rubber_band (tree_view);
4144
4145       add_scroll_timeout (tree_view);
4146     }
4147
4148   /* only check for an initiated drag when a button is pressed */
4149   if (tree_view->priv->pressed_button >= 0
4150       && !tree_view->priv->rubber_band_status)
4151     gtk_tree_view_maybe_begin_dragging_row (tree_view, event);
4152
4153   new_y = TREE_WINDOW_Y_TO_RBTREE_Y(tree_view, event->y);
4154   if (new_y < 0)
4155     new_y = 0;
4156
4157   _gtk_rbtree_find_offset (tree_view->priv->tree, new_y, &tree, &node);
4158
4159   /* If we are currently pressing down a button, we don't want to prelight anything else. */
4160   if ((tree_view->priv->button_pressed_node != NULL) &&
4161       (tree_view->priv->button_pressed_node != node))
4162     node = NULL;
4163
4164   tree_view->priv->event_last_x = event->x;
4165   tree_view->priv->event_last_y = event->y;
4166
4167   prelight_or_select (tree_view, tree, node, event->x, event->y);
4168
4169   return TRUE;
4170 }
4171
4172 static gboolean
4173 gtk_tree_view_motion (GtkWidget      *widget,
4174                       GdkEventMotion *event)
4175 {
4176   GtkTreeView *tree_view;
4177
4178   tree_view = (GtkTreeView *) widget;
4179
4180   /* Resizing a column */
4181   if (GTK_TREE_VIEW_FLAG_SET (tree_view, GTK_TREE_VIEW_IN_COLUMN_RESIZE))
4182     return gtk_tree_view_motion_resize_column (widget, event);
4183
4184   /* Drag column */
4185   if (GTK_TREE_VIEW_FLAG_SET (tree_view, GTK_TREE_VIEW_IN_COLUMN_DRAG))
4186     return gtk_tree_view_motion_drag_column (widget, event);
4187
4188   /* Sanity check it */
4189   if (event->window == tree_view->priv->bin_window)
4190     return gtk_tree_view_motion_bin_window (widget, event);
4191
4192   return FALSE;
4193 }
4194
4195 /* Invalidate the focus rectangle near the edge of the bin_window; used when
4196  * the tree is empty.
4197  */
4198 static void
4199 invalidate_empty_focus (GtkTreeView *tree_view)
4200 {
4201   GdkRectangle area;
4202
4203   if (!gtk_widget_has_focus (GTK_WIDGET (tree_view)))
4204     return;
4205
4206   area.x = 0;
4207   area.y = 0;
4208   gdk_drawable_get_size (tree_view->priv->bin_window, &area.width, &area.height);
4209   gdk_window_invalidate_rect (tree_view->priv->bin_window, &area, FALSE);
4210 }
4211
4212 /* Draws a focus rectangle near the edge of the bin_window; used when the tree
4213  * is empty.
4214  */
4215 static void
4216 draw_empty_focus (GtkTreeView *tree_view, cairo_t *cr)
4217 {
4218   GtkWidget *widget = GTK_WIDGET (tree_view);
4219   gint w, h;
4220
4221   if (!gtk_widget_has_focus (widget))
4222     return;
4223
4224   gdk_drawable_get_size (tree_view->priv->bin_window, &w, &h);
4225
4226   w -= 2;
4227   h -= 2;
4228
4229   if (w > 0 && h > 0)
4230     gtk_cairo_paint_focus (gtk_widget_get_style (widget),
4231                      cr,
4232                      gtk_widget_get_state (widget),
4233                      widget,
4234                      NULL,
4235                      1, 1, w, h);
4236 }
4237
4238 typedef enum {
4239   GTK_TREE_VIEW_GRID_LINE,
4240   GTK_TREE_VIEW_TREE_LINE,
4241   GTK_TREE_VIEW_FOREGROUND_LINE
4242 } GtkTreeViewLineType;
4243
4244 static void
4245 gtk_tree_view_draw_line (GtkTreeView         *tree_view,
4246                          cairo_t             *cr,
4247                          GtkTreeViewLineType  type,
4248                          int                  x1,
4249                          int                  y1,
4250                          int                  x2,
4251                          int                  y2)
4252 {
4253   cairo_save (cr);
4254
4255   switch (type)
4256     {
4257     case GTK_TREE_VIEW_TREE_LINE:
4258       cairo_set_source_rgb (cr, 0, 0, 0);
4259       cairo_set_line_width (cr, tree_view->priv->tree_line_width);
4260       if (tree_view->priv->tree_line_dashes[0])
4261         cairo_set_dash (cr,
4262                         tree_view->priv->tree_line_dashes,
4263                         2, 0.5);
4264       break;
4265     case GTK_TREE_VIEW_GRID_LINE:
4266       cairo_set_source_rgb (cr, 0, 0, 0);
4267       cairo_set_line_width (cr, tree_view->priv->grid_line_width);
4268       if (tree_view->priv->grid_line_dashes[0])
4269         cairo_set_dash (cr,
4270                         tree_view->priv->grid_line_dashes,
4271                         2, 0.5);
4272       break;
4273     default:
4274       g_assert_not_reached ();
4275       /* fall through */
4276     case GTK_TREE_VIEW_FOREGROUND_LINE:
4277       cairo_set_line_width (cr, 1.0);
4278       gdk_cairo_set_source_color (cr,
4279                                   &gtk_widget_get_style (GTK_WIDGET (tree_view))->fg[gtk_widget_get_state (GTK_WIDGET (tree_view))]);
4280       break;
4281     }
4282
4283   cairo_move_to (cr, x1 + 0.5, y1 + 0.5);
4284   cairo_line_to (cr, x2 + 0.5, y2 + 0.5);
4285   cairo_stroke (cr);
4286
4287   cairo_restore (cr);
4288 }
4289
4290 static void
4291 gtk_tree_view_draw_grid_lines (GtkTreeView    *tree_view,
4292                                cairo_t        *cr,
4293                                gint            n_visible_columns)
4294 {
4295   GList *list = tree_view->priv->columns;
4296   gint i = 0;
4297   gint current_x = 0;
4298
4299   if (tree_view->priv->grid_lines != GTK_TREE_VIEW_GRID_LINES_VERTICAL
4300       && tree_view->priv->grid_lines != GTK_TREE_VIEW_GRID_LINES_BOTH)
4301     return;
4302
4303   /* Only draw the lines for visible rows and columns */
4304   for (list = tree_view->priv->columns; list; list = list->next, i++)
4305     {
4306       GtkTreeViewColumn *column = list->data;
4307
4308       /* We don't want a line for the last column */
4309       if (i == n_visible_columns - 1)
4310         break;
4311
4312       if (! column->visible)
4313         continue;
4314
4315       current_x += column->width;
4316
4317       gtk_tree_view_draw_line (tree_view, cr,
4318                                GTK_TREE_VIEW_GRID_LINE,
4319                                current_x - 1, 0,
4320                                current_x - 1, tree_view->priv->height);
4321     }
4322 }
4323
4324 /* Warning: Very scary function.
4325  * Modify at your own risk
4326  *
4327  * KEEP IN SYNC WITH gtk_tree_view_create_row_drag_icon()!
4328  * FIXME: It's not...
4329  */
4330 static gboolean
4331 gtk_tree_view_bin_draw (GtkWidget      *widget,
4332                         cairo_t        *cr)
4333 {
4334   GtkTreeView *tree_view = GTK_TREE_VIEW (widget);
4335   GtkTreePath *path;
4336   GtkStyle *style;
4337   GtkRBTree *tree;
4338   GList *list;
4339   GtkRBNode *node;
4340   GtkRBNode *cursor = NULL;
4341   GtkRBTree *cursor_tree = NULL;
4342   GtkRBNode *drag_highlight = NULL;
4343   GtkRBTree *drag_highlight_tree = NULL;
4344   GtkTreeIter iter;
4345   gint new_y;
4346   gint y_offset, cell_offset;
4347   gint max_height;
4348   gint depth;
4349   GdkRectangle background_area;
4350   GdkRectangle cell_area;
4351   GdkRectangle clip;
4352   guint flags;
4353   gint highlight_x;
4354   gint expander_cell_width;
4355   gint bin_window_width;
4356   gint bin_window_height;
4357   GtkTreePath *cursor_path;
4358   GtkTreePath *drag_dest_path;
4359   GList *first_column, *last_column;
4360   gint vertical_separator;
4361   gint horizontal_separator;
4362   gint focus_line_width;
4363   gboolean allow_rules;
4364   gboolean has_special_cell;
4365   gboolean rtl;
4366   gint n_visible_columns;
4367   gint pointer_x, pointer_y;
4368   gint grid_line_width;
4369   gboolean got_pointer = FALSE;
4370   gboolean draw_vgrid_lines, draw_hgrid_lines;
4371
4372   rtl = (gtk_widget_get_direction (widget) == GTK_TEXT_DIR_RTL);
4373
4374   gtk_widget_style_get (widget,
4375                         "horizontal-separator", &horizontal_separator,
4376                         "vertical-separator", &vertical_separator,
4377                         "allow-rules", &allow_rules,
4378                         "focus-line-width", &focus_line_width,
4379                         NULL);
4380
4381   if (tree_view->priv->tree == NULL)
4382     {
4383       draw_empty_focus (tree_view, cr);
4384       return TRUE;
4385     }
4386
4387   validate_visible_area (tree_view);
4388
4389   style = gtk_widget_get_style (widget);
4390
4391   gdk_drawable_get_size (tree_view->priv->bin_window,
4392                          &bin_window_width, &bin_window_height);
4393   cairo_rectangle (cr, 0, 0, bin_window_width, bin_window_height);
4394   cairo_clip (cr);
4395   if (!gdk_cairo_get_clip_rectangle (cr, &clip))
4396     return TRUE;
4397
4398   new_y = TREE_WINDOW_Y_TO_RBTREE_Y (tree_view, clip.y);
4399
4400   if (new_y < 0)
4401     new_y = 0;
4402   y_offset = -_gtk_rbtree_find_offset (tree_view->priv->tree, new_y, &tree, &node);
4403
4404   if (tree_view->priv->height < bin_window_height)
4405     {
4406       gtk_cairo_paint_flat_box (style,
4407                           cr,
4408                           gtk_widget_get_state (widget),
4409                           GTK_SHADOW_NONE,
4410                           widget,
4411                           "cell_even",
4412                           0, tree_view->priv->height,
4413                           bin_window_width,
4414                           bin_window_height - tree_view->priv->height);
4415     }
4416
4417   if (node == NULL)
4418     return TRUE;
4419
4420   /* find the path for the node */
4421   path = _gtk_tree_view_find_path ((GtkTreeView *)widget,
4422                                    tree,
4423                                    node);
4424   gtk_tree_model_get_iter (tree_view->priv->model,
4425                            &iter,
4426                            path);
4427   depth = gtk_tree_path_get_depth (path);
4428   gtk_tree_path_free (path);
4429
4430   cursor_path = NULL;
4431   drag_dest_path = NULL;
4432
4433   if (tree_view->priv->cursor)
4434     cursor_path = gtk_tree_row_reference_get_path (tree_view->priv->cursor);
4435
4436   if (cursor_path)
4437     _gtk_tree_view_find_node (tree_view, cursor_path,
4438                               &cursor_tree, &cursor);
4439
4440   if (tree_view->priv->drag_dest_row)
4441     drag_dest_path = gtk_tree_row_reference_get_path (tree_view->priv->drag_dest_row);
4442
4443   if (drag_dest_path)
4444     _gtk_tree_view_find_node (tree_view, drag_dest_path,
4445                               &drag_highlight_tree, &drag_highlight);
4446
4447   draw_vgrid_lines =
4448     tree_view->priv->grid_lines == GTK_TREE_VIEW_GRID_LINES_VERTICAL
4449     || tree_view->priv->grid_lines == GTK_TREE_VIEW_GRID_LINES_BOTH;
4450   draw_hgrid_lines =
4451     tree_view->priv->grid_lines == GTK_TREE_VIEW_GRID_LINES_HORIZONTAL
4452     || tree_view->priv->grid_lines == GTK_TREE_VIEW_GRID_LINES_BOTH;
4453
4454   if (draw_vgrid_lines || draw_hgrid_lines)
4455     gtk_widget_style_get (widget, "grid-line-width", &grid_line_width, NULL);
4456
4457   n_visible_columns = 0;
4458   for (list = tree_view->priv->columns; list; list = list->next)
4459     {
4460       if (! GTK_TREE_VIEW_COLUMN (list->data)->visible)
4461         continue;
4462       n_visible_columns ++;
4463     }
4464
4465   /* Find the last column */
4466   for (last_column = g_list_last (tree_view->priv->columns);
4467        last_column && !(GTK_TREE_VIEW_COLUMN (last_column->data)->visible);
4468        last_column = last_column->prev)
4469     ;
4470
4471   /* and the first */
4472   for (first_column = g_list_first (tree_view->priv->columns);
4473        first_column && !(GTK_TREE_VIEW_COLUMN (first_column->data)->visible);
4474        first_column = first_column->next)
4475     ;
4476
4477   /* Actually process the expose event.  To do this, we want to
4478    * start at the first node of the event, and walk the tree in
4479    * order, drawing each successive node.
4480    */
4481
4482   do
4483     {
4484       gboolean parity;
4485       gboolean is_separator = FALSE;
4486       gboolean is_first = FALSE;
4487       gboolean is_last = FALSE;
4488
4489       is_separator = row_is_separator (tree_view, &iter, NULL);
4490
4491       max_height = ROW_HEIGHT (tree_view, BACKGROUND_HEIGHT (node));
4492
4493       cell_offset = 0;
4494       highlight_x = 0; /* should match x coord of first cell */
4495       expander_cell_width = 0;
4496
4497       background_area.y = y_offset + clip.y;
4498       background_area.height = max_height;
4499
4500       flags = 0;
4501
4502       if (GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_PRELIT))
4503         flags |= GTK_CELL_RENDERER_PRELIT;
4504
4505       if (GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_SELECTED))
4506         flags |= GTK_CELL_RENDERER_SELECTED;
4507
4508       parity = _gtk_rbtree_node_find_parity (tree, node);
4509
4510       /* we *need* to set cell data on all cells before the call
4511        * to _has_special_cell, else _has_special_cell() does not
4512        * return a correct value.
4513        */
4514       for (list = (rtl ? g_list_last (tree_view->priv->columns) : g_list_first (tree_view->priv->columns));
4515            list;
4516            list = (rtl ? list->prev : list->next))
4517         {
4518           GtkTreeViewColumn *column = list->data;
4519           gtk_tree_view_column_cell_set_cell_data (column,
4520                                                    tree_view->priv->model,
4521                                                    &iter,
4522                                                    GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_PARENT),
4523                                                    node->children?TRUE:FALSE);
4524         }
4525
4526       has_special_cell = gtk_tree_view_has_special_cell (tree_view);
4527
4528       for (list = (rtl ? g_list_last (tree_view->priv->columns) : g_list_first (tree_view->priv->columns));
4529            list;
4530            list = (rtl ? list->prev : list->next))
4531         {
4532           GtkTreeViewColumn *column = list->data;
4533           const gchar *detail = NULL;
4534           gchar new_detail[128];
4535           GtkStateType state;
4536
4537           if (!column->visible)
4538             continue;
4539
4540           if (cell_offset > clip.x + clip.width ||
4541               cell_offset + column->width < clip.x)
4542             {
4543               cell_offset += column->width;
4544               continue;
4545             }
4546
4547           if (column->show_sort_indicator)
4548             flags |= GTK_CELL_RENDERER_SORTED;
4549           else
4550             flags &= ~GTK_CELL_RENDERER_SORTED;
4551
4552           if (cursor == node)
4553             flags |= GTK_CELL_RENDERER_FOCUSED;
4554           else
4555             flags &= ~GTK_CELL_RENDERER_FOCUSED;
4556
4557           background_area.x = cell_offset;
4558           background_area.width = column->width;
4559
4560           cell_area = background_area;
4561           cell_area.y += vertical_separator / 2;
4562           cell_area.x += horizontal_separator / 2;
4563           cell_area.height -= vertical_separator;
4564           cell_area.width -= horizontal_separator;
4565
4566           if (draw_vgrid_lines)
4567             {
4568               if (list == first_column)
4569                 {
4570                   cell_area.width -= grid_line_width / 2;
4571                 }
4572               else if (list == last_column)
4573                 {
4574                   cell_area.x += grid_line_width / 2;
4575                   cell_area.width -= grid_line_width / 2;
4576                 }
4577               else
4578                 {
4579                   cell_area.x += grid_line_width / 2;
4580                   cell_area.width -= grid_line_width;
4581                 }
4582             }
4583
4584           if (draw_hgrid_lines)
4585             {
4586               cell_area.y += grid_line_width / 2;
4587               cell_area.height -= grid_line_width;
4588             }
4589
4590           if (!gdk_rectangle_intersect (&clip, &background_area, NULL))
4591             {
4592               cell_offset += column->width;
4593               continue;
4594             }
4595
4596           gtk_tree_view_column_cell_set_cell_data (column,
4597                                                    tree_view->priv->model,
4598                                                    &iter,
4599                                                    GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_PARENT),
4600                                                    node->children?TRUE:FALSE);
4601
4602           /* Select the detail for drawing the cell.  relevant
4603            * factors are parity, sortedness, and whether to
4604            * display rules.
4605            */
4606           if (allow_rules && tree_view->priv->has_rules)
4607             {
4608               if ((flags & GTK_CELL_RENDERER_SORTED) &&
4609                   n_visible_columns >= 3)
4610                 {
4611                   if (parity)
4612                     detail = "cell_odd_ruled_sorted";
4613                   else
4614                     detail = "cell_even_ruled_sorted";
4615                 }
4616               else
4617                 {
4618                   if (parity)
4619                     detail = "cell_odd_ruled";
4620                   else
4621                     detail = "cell_even_ruled";
4622                 }
4623             }
4624           else
4625             {
4626               if ((flags & GTK_CELL_RENDERER_SORTED) &&
4627                   n_visible_columns >= 3)
4628                 {
4629                   if (parity)
4630                     detail = "cell_odd_sorted";
4631                   else
4632                     detail = "cell_even_sorted";
4633                 }
4634               else
4635                 {
4636                   if (parity)
4637                     detail = "cell_odd";
4638                   else
4639                     detail = "cell_even";
4640                 }
4641             }
4642
4643           g_assert (detail);
4644
4645           if (gtk_widget_get_state (widget) == GTK_STATE_INSENSITIVE)
4646             state = GTK_STATE_INSENSITIVE;
4647           else if (flags & GTK_CELL_RENDERER_SELECTED)
4648             state = GTK_STATE_SELECTED;
4649           else
4650             state = GTK_STATE_NORMAL;
4651
4652           /* Draw background */
4653           is_first = (rtl ? !list->next : !list->prev);
4654           is_last = (rtl ? !list->prev : !list->next);
4655
4656           /* (I don't like the snprintfs either, but couldn't find a
4657            * less messy way).
4658            */
4659           if (is_first && is_last)
4660             g_snprintf (new_detail, 127, "%s", detail);
4661           else if (is_first)
4662             g_snprintf (new_detail, 127, "%s_start", detail);
4663           else if (is_last)
4664             g_snprintf (new_detail, 127, "%s_end", detail);
4665           else
4666             g_snprintf (new_detail, 127, "%s_middle", detail);
4667
4668           gtk_cairo_paint_flat_box (style,
4669                               cr,
4670                               state,
4671                               GTK_SHADOW_NONE,
4672                               widget,
4673                               new_detail,
4674                               background_area.x,
4675                               background_area.y,
4676                               background_area.width,
4677                               background_area.height);
4678
4679           if (gtk_tree_view_is_expander_column (tree_view, column))
4680             {
4681               if (!rtl)
4682                 cell_area.x += (depth - 1) * tree_view->priv->level_indentation;
4683               cell_area.width -= (depth - 1) * tree_view->priv->level_indentation;
4684
4685               if (TREE_VIEW_DRAW_EXPANDERS(tree_view))
4686                 {
4687                   if (!rtl)
4688                     cell_area.x += depth * tree_view->priv->expander_size;
4689                   cell_area.width -= depth * tree_view->priv->expander_size;
4690                 }
4691
4692               /* If we have an expander column, the highlight underline
4693                * starts with that column, so that it indicates which
4694                * level of the tree we're dropping at.
4695                */
4696               highlight_x = cell_area.x;
4697               expander_cell_width = cell_area.width;
4698
4699               if (is_separator)
4700                 gtk_cairo_paint_hline (style,
4701                                  cr,
4702                                  state,
4703                                  widget,
4704                                  NULL,
4705                                  cell_area.x,
4706                                  cell_area.x + cell_area.width,
4707                                  cell_area.y + cell_area.height / 2);
4708               else
4709                 _gtk_tree_view_column_cell_render (column,
4710                                                    cr,
4711                                                    &background_area,
4712                                                    &cell_area,
4713                                                    flags);
4714               if (TREE_VIEW_DRAW_EXPANDERS(tree_view)
4715                   && (node->flags & GTK_RBNODE_IS_PARENT) == GTK_RBNODE_IS_PARENT)
4716                 {
4717                   if (!got_pointer)
4718                     {
4719                       gdk_window_get_pointer (tree_view->priv->bin_window,
4720                                               &pointer_x, &pointer_y, NULL);
4721                       got_pointer = TRUE;
4722                     }
4723
4724                   gtk_tree_view_draw_arrow (GTK_TREE_VIEW (widget),
4725                                             cr,
4726                                             tree,
4727                                             node,
4728                                             pointer_x, pointer_y);
4729                 }
4730             }
4731           else
4732             {
4733               if (is_separator)
4734                 gtk_cairo_paint_hline (style,
4735                                  cr,
4736                                  state,
4737                                  widget,
4738                                  NULL,
4739                                  cell_area.x,
4740                                  cell_area.x + cell_area.width,
4741                                  cell_area.y + cell_area.height / 2);
4742               else
4743                 _gtk_tree_view_column_cell_render (column,
4744                                                    cr,
4745                                                    &background_area,
4746                                                    &cell_area,
4747                                                    flags);
4748             }
4749
4750           if (draw_hgrid_lines)
4751             {
4752               if (background_area.y > 0)
4753                 gtk_tree_view_draw_line (tree_view, cr,
4754                                          GTK_TREE_VIEW_GRID_LINE,
4755                                          background_area.x, background_area.y,
4756                                          background_area.x + background_area.width,
4757                                          background_area.y);
4758
4759               if (y_offset + max_height >= clip.height)
4760                 gtk_tree_view_draw_line (tree_view, cr,
4761                                          GTK_TREE_VIEW_GRID_LINE,
4762                                          background_area.x, background_area.y + max_height,
4763                                          background_area.x + background_area.width,
4764                                          background_area.y + max_height);
4765             }
4766
4767           if (gtk_tree_view_is_expander_column (tree_view, column) &&
4768               tree_view->priv->tree_lines_enabled)
4769             {
4770               gint x = background_area.x;
4771               gint mult = rtl ? -1 : 1;
4772               gint y0 = background_area.y;
4773               gint y1 = background_area.y + background_area.height/2;
4774               gint y2 = background_area.y + background_area.height;
4775
4776               if (rtl)
4777                 x += background_area.width - 1;
4778
4779               if ((node->flags & GTK_RBNODE_IS_PARENT) == GTK_RBNODE_IS_PARENT
4780                   && depth > 1)
4781                 {
4782                   gtk_tree_view_draw_line (tree_view, cr,
4783                                            GTK_TREE_VIEW_TREE_LINE,
4784                                            x + tree_view->priv->expander_size * (depth - 1.5) * mult,
4785                                            y1,
4786                                            x + tree_view->priv->expander_size * (depth - 1.1) * mult,
4787                                            y1);
4788                 }
4789               else if (depth > 1)
4790                 {
4791                   gtk_tree_view_draw_line (tree_view, cr,
4792                                            GTK_TREE_VIEW_TREE_LINE,
4793                                            x + tree_view->priv->expander_size * (depth - 1.5) * mult,
4794                                            y1,
4795                                            x + tree_view->priv->expander_size * (depth - 0.5) * mult,
4796                                            y1);
4797                 }
4798
4799               if (depth > 1)
4800                 {
4801                   gint i;
4802                   GtkRBNode *tmp_node;
4803                   GtkRBTree *tmp_tree;
4804
4805                   if (!_gtk_rbtree_next (tree, node))
4806                     gtk_tree_view_draw_line (tree_view, cr,
4807                                              GTK_TREE_VIEW_TREE_LINE,
4808                                              x + tree_view->priv->expander_size * (depth - 1.5) * mult,
4809                                              y0,
4810                                              x + tree_view->priv->expander_size * (depth - 1.5) * mult,
4811                                              y1);
4812                   else
4813                     gtk_tree_view_draw_line (tree_view, cr,
4814                                              GTK_TREE_VIEW_TREE_LINE,
4815                                              x + tree_view->priv->expander_size * (depth - 1.5) * mult,
4816                                              y0,
4817                                              x + tree_view->priv->expander_size * (depth - 1.5) * mult,
4818                                              y2);
4819
4820                   tmp_node = tree->parent_node;
4821                   tmp_tree = tree->parent_tree;
4822
4823                   for (i = depth - 2; i > 0; i--)
4824                     {
4825                       if (_gtk_rbtree_next (tmp_tree, tmp_node))
4826                         gtk_tree_view_draw_line (tree_view, cr,
4827                                                  GTK_TREE_VIEW_TREE_LINE,
4828                                                  x + tree_view->priv->expander_size * (i - 0.5) * mult,
4829                                                  y0,
4830                                                  x + tree_view->priv->expander_size * (i - 0.5) * mult,
4831                                                  y2);
4832
4833                       tmp_node = tmp_tree->parent_node;
4834                       tmp_tree = tmp_tree->parent_tree;
4835                     }
4836                 }
4837             }
4838
4839           if (node == cursor && has_special_cell &&
4840               ((column == tree_view->priv->focus_column &&
4841                 GTK_TREE_VIEW_FLAG_SET (tree_view, GTK_TREE_VIEW_DRAW_KEYFOCUS) &&
4842                 gtk_widget_has_focus (widget)) ||
4843                (column == tree_view->priv->edited_column)))
4844             {
4845               _gtk_tree_view_column_cell_draw_focus (column,
4846                                                      cr,
4847                                                      &background_area,
4848                                                      &cell_area,
4849                                                      flags);
4850             }
4851
4852           cell_offset += column->width;
4853         }
4854
4855       if (node == drag_highlight)
4856         {
4857           /* Draw indicator for the drop
4858            */
4859           gint highlight_y = -1;
4860           GtkRBTree *tree = NULL;
4861           GtkRBNode *node = NULL;
4862           gint width;
4863
4864           switch (tree_view->priv->drag_dest_pos)
4865             {
4866             case GTK_TREE_VIEW_DROP_BEFORE:
4867               highlight_y = background_area.y - 1;
4868               if (highlight_y < 0)
4869                       highlight_y = 0;
4870               break;
4871
4872             case GTK_TREE_VIEW_DROP_AFTER:
4873               highlight_y = background_area.y + background_area.height - 1;
4874               break;
4875
4876             case GTK_TREE_VIEW_DROP_INTO_OR_BEFORE:
4877             case GTK_TREE_VIEW_DROP_INTO_OR_AFTER:
4878               _gtk_tree_view_find_node (tree_view, drag_dest_path, &tree, &node);
4879
4880               if (tree == NULL)
4881                 break;
4882               gdk_drawable_get_size (tree_view->priv->bin_window,
4883                                      &width, NULL);
4884
4885               gtk_cairo_paint_focus (style,
4886                                cr,
4887                                gtk_widget_get_state (widget),
4888                                widget,
4889                                (is_first
4890                                 ? (is_last ? "treeview-drop-indicator" : "treeview-drop-indicator-left" )
4891                                 : (is_last ? "treeview-drop-indicator-right" : "tree-view-drop-indicator-middle" )),
4892                                 0, BACKGROUND_FIRST_PIXEL (tree_view, tree, node)
4893                                    - focus_line_width / 2,
4894                                 width, ROW_HEIGHT (tree_view, BACKGROUND_HEIGHT (node))
4895                                        - focus_line_width + 1);
4896               break;
4897             }
4898
4899           if (highlight_y >= 0)
4900             {
4901               gtk_tree_view_draw_line (tree_view, cr,
4902                                        GTK_TREE_VIEW_FOREGROUND_LINE,
4903                                        rtl ? highlight_x + expander_cell_width : highlight_x,
4904                                        highlight_y,
4905                                        rtl ? 0 : bin_window_width,
4906                                        highlight_y);
4907             }
4908         }
4909
4910       /* draw the big row-spanning focus rectangle, if needed */
4911       if (!has_special_cell && node == cursor &&
4912           GTK_TREE_VIEW_FLAG_SET (tree_view, GTK_TREE_VIEW_DRAW_KEYFOCUS) &&
4913           gtk_widget_has_focus (widget))
4914         {
4915           gint tmp_y, tmp_height;
4916           gint width;
4917           GtkStateType focus_rect_state;
4918
4919           focus_rect_state =
4920             flags & GTK_CELL_RENDERER_SELECTED ? GTK_STATE_SELECTED :
4921             (flags & GTK_CELL_RENDERER_PRELIT ? GTK_STATE_PRELIGHT :
4922              (flags & GTK_CELL_RENDERER_INSENSITIVE ? GTK_STATE_INSENSITIVE :
4923               GTK_STATE_NORMAL));
4924
4925           gdk_drawable_get_size (tree_view->priv->bin_window,
4926                                  &width, NULL);
4927
4928           if (draw_hgrid_lines)
4929             {
4930               tmp_y = BACKGROUND_FIRST_PIXEL (tree_view, tree, node) + grid_line_width / 2;
4931               tmp_height = ROW_HEIGHT (tree_view, BACKGROUND_HEIGHT (node)) - grid_line_width;
4932             }
4933           else
4934             {
4935               tmp_y = BACKGROUND_FIRST_PIXEL (tree_view, tree, node);
4936               tmp_height = ROW_HEIGHT (tree_view, BACKGROUND_HEIGHT (node));
4937             }
4938
4939           gtk_cairo_paint_focus (style,
4940                            cr,
4941                            focus_rect_state,
4942                            widget,
4943                            (is_first
4944                             ? (is_last ? "treeview" : "treeview-left" )
4945                             : (is_last ? "treeview-right" : "treeview-middle" )),
4946                            0, tmp_y,
4947                            width, tmp_height);
4948         }
4949
4950       y_offset += max_height;
4951       if (node->children)
4952         {
4953           GtkTreeIter parent = iter;
4954           gboolean has_child;
4955
4956           tree = node->children;
4957           node = tree->root;
4958
4959           g_assert (node != tree->nil);
4960
4961           while (node->left != tree->nil)
4962             node = node->left;
4963           has_child = gtk_tree_model_iter_children (tree_view->priv->model,
4964                                                     &iter,
4965                                                     &parent);
4966           depth++;
4967
4968           /* Sanity Check! */
4969           TREE_VIEW_INTERNAL_ASSERT (has_child, FALSE);
4970         }
4971       else
4972         {
4973           gboolean done = FALSE;
4974
4975           do
4976             {
4977               node = _gtk_rbtree_next (tree, node);
4978               if (node != NULL)
4979                 {
4980                   gboolean has_next = gtk_tree_model_iter_next (tree_view->priv->model, &iter);
4981                   done = TRUE;
4982
4983                   /* Sanity Check! */
4984                   TREE_VIEW_INTERNAL_ASSERT (has_next, FALSE);
4985                 }
4986               else
4987                 {
4988                   GtkTreeIter parent_iter = iter;
4989                   gboolean has_parent;
4990
4991                   node = tree->parent_node;
4992                   tree = tree->parent_tree;
4993                   if (tree == NULL)
4994                     /* we should go to done to free some memory */
4995                     goto done;
4996                   has_parent = gtk_tree_model_iter_parent (tree_view->priv->model,
4997                                                            &iter,
4998                                                            &parent_iter);
4999                   depth--;
5000
5001                   /* Sanity check */
5002                   TREE_VIEW_INTERNAL_ASSERT (has_parent, FALSE);
5003                 }
5004             }
5005           while (!done);
5006         }
5007     }
5008   while (y_offset < clip.height);
5009
5010 done:
5011   gtk_tree_view_draw_grid_lines (tree_view, cr, n_visible_columns);
5012
5013   if (tree_view->priv->rubber_band_status == RUBBER_BAND_ACTIVE)
5014     gtk_tree_view_paint_rubber_band (tree_view, cr);
5015
5016   if (cursor_path)
5017     gtk_tree_path_free (cursor_path);
5018
5019   if (drag_dest_path)
5020     gtk_tree_path_free (drag_dest_path);
5021
5022   return FALSE;
5023 }
5024
5025 static gboolean
5026 gtk_tree_view_draw (GtkWidget *widget,
5027                     cairo_t   *cr)
5028 {
5029   GtkTreeView *tree_view = GTK_TREE_VIEW (widget);
5030
5031   if (gtk_cairo_should_draw_window (cr, tree_view->priv->bin_window))
5032     {
5033       GList *tmp_list;
5034       int x, y;
5035
5036       cairo_save (cr);
5037
5038       gdk_window_get_position (tree_view->priv->bin_window, &x, &y);
5039       cairo_translate (cr, x, y);
5040
5041       gtk_tree_view_bin_draw (widget, cr);
5042
5043       cairo_restore (cr);
5044
5045       /* We can't just chain up to Container::draw as it will try to send the
5046        * event to the headers, so we handle propagating it to our children
5047        * (eg. widgets being edited) ourselves.
5048        */
5049       tmp_list = tree_view->priv->children;
5050       while (tmp_list)
5051         {
5052           GtkTreeViewChild *child = tmp_list->data;
5053           tmp_list = tmp_list->next;
5054
5055           gtk_container_propagate_draw (GTK_CONTAINER (tree_view), child->widget, cr);
5056         }
5057     }
5058
5059   if (gtk_cairo_should_draw_window (cr, tree_view->priv->header_window))
5060     {
5061       GList *list;
5062
5063       for (list = tree_view->priv->columns; list != NULL; list = list->next)
5064         {
5065           GtkTreeViewColumn *column = list->data;
5066
5067           if (column == tree_view->priv->drag_column)
5068             continue;
5069
5070           if (column->visible)
5071             gtk_container_propagate_draw (GTK_CONTAINER (tree_view),
5072                                           column->button,
5073                                           cr);
5074         }
5075     }
5076
5077   if (tree_view->priv->drag_window &&
5078       gtk_cairo_should_draw_window (cr, tree_view->priv->drag_window))
5079     {
5080       gtk_container_propagate_draw (GTK_CONTAINER (tree_view),
5081                                     tree_view->priv->drag_column->button,
5082                                     cr);
5083     }
5084
5085   return TRUE;
5086 }
5087
5088 enum
5089 {
5090   DROP_HOME,
5091   DROP_RIGHT,
5092   DROP_LEFT,
5093   DROP_END
5094 };
5095
5096 /* returns 0x1 when no column has been found -- yes it's hackish */
5097 static GtkTreeViewColumn *
5098 gtk_tree_view_get_drop_column (GtkTreeView       *tree_view,
5099                                GtkTreeViewColumn *column,
5100                                gint               drop_position)
5101 {
5102   GtkTreeViewColumn *left_column = NULL;
5103   GtkTreeViewColumn *cur_column = NULL;
5104   GList *tmp_list;
5105
5106   if (!column->reorderable)
5107     return (GtkTreeViewColumn *)0x1;
5108
5109   switch (drop_position)
5110     {
5111       case DROP_HOME:
5112         /* find first column where we can drop */
5113         tmp_list = tree_view->priv->columns;
5114         if (column == GTK_TREE_VIEW_COLUMN (tmp_list->data))
5115           return (GtkTreeViewColumn *)0x1;
5116
5117         while (tmp_list)
5118           {
5119             g_assert (tmp_list);
5120
5121             cur_column = GTK_TREE_VIEW_COLUMN (tmp_list->data);
5122             tmp_list = tmp_list->next;
5123
5124             if (left_column && left_column->visible == FALSE)
5125               continue;
5126
5127             if (!tree_view->priv->column_drop_func)
5128               return left_column;
5129
5130             if (!tree_view->priv->column_drop_func (tree_view, column, left_column, cur_column, tree_view->priv->column_drop_func_data))
5131               {
5132                 left_column = cur_column;
5133                 continue;
5134               }
5135
5136             return left_column;
5137           }
5138
5139         if (!tree_view->priv->column_drop_func)
5140           return left_column;
5141
5142         if (tree_view->priv->column_drop_func (tree_view, column, left_column, NULL, tree_view->priv->column_drop_func_data))
5143           return left_column;
5144         else
5145           return (GtkTreeViewColumn *)0x1;
5146         break;
5147
5148       case DROP_RIGHT:
5149         /* find first column after column where we can drop */
5150         tmp_list = tree_view->priv->columns;
5151
5152         for (; tmp_list; tmp_list = tmp_list->next)
5153           if (GTK_TREE_VIEW_COLUMN (tmp_list->data) == column)
5154             break;
5155
5156         if (!tmp_list || !tmp_list->next)
5157           return (GtkTreeViewColumn *)0x1;
5158
5159         tmp_list = tmp_list->next;
5160         left_column = GTK_TREE_VIEW_COLUMN (tmp_list->data);
5161         tmp_list = tmp_list->next;
5162
5163         while (tmp_list)
5164           {
5165             g_assert (tmp_list);
5166
5167             cur_column = GTK_TREE_VIEW_COLUMN (tmp_list->data);
5168             tmp_list = tmp_list->next;
5169
5170             if (left_column && left_column->visible == FALSE)
5171               {
5172                 left_column = cur_column;
5173                 if (tmp_list)
5174                   tmp_list = tmp_list->next;
5175                 continue;
5176               }
5177
5178             if (!tree_view->priv->column_drop_func)
5179               return left_column;
5180
5181             if (!tree_view->priv->column_drop_func (tree_view, column, left_column, cur_column, tree_view->priv->column_drop_func_data))
5182               {
5183                 left_column = cur_column;
5184                 continue;
5185               }
5186
5187             return left_column;
5188           }
5189
5190         if (!tree_view->priv->column_drop_func)
5191           return left_column;
5192
5193         if (tree_view->priv->column_drop_func (tree_view, column, left_column, NULL, tree_view->priv->column_drop_func_data))
5194           return left_column;
5195         else
5196           return (GtkTreeViewColumn *)0x1;
5197         break;
5198
5199       case DROP_LEFT:
5200         /* find first column before column where we can drop */
5201         tmp_list = tree_view->priv->columns;
5202
5203         for (; tmp_list; tmp_list = tmp_list->next)
5204           if (GTK_TREE_VIEW_COLUMN (tmp_list->data) == column)
5205             break;
5206
5207         if (!tmp_list || !tmp_list->prev)
5208           return (GtkTreeViewColumn *)0x1;
5209
5210         tmp_list = tmp_list->prev;
5211         cur_column = GTK_TREE_VIEW_COLUMN (tmp_list->data);
5212         tmp_list = tmp_list->prev;
5213
5214         while (tmp_list)
5215           {
5216             g_assert (tmp_list);
5217
5218             left_column = GTK_TREE_VIEW_COLUMN (tmp_list->data);
5219
5220             if (left_column && !left_column->visible)
5221               {
5222                 /*if (!tmp_list->prev)
5223                   return (GtkTreeViewColumn *)0x1;
5224                   */
5225 /*
5226                 cur_column = GTK_TREE_VIEW_COLUMN (tmp_list->prev->data);
5227                 tmp_list = tmp_list->prev->prev;
5228                 continue;*/
5229
5230                 cur_column = left_column;
5231                 if (tmp_list)
5232                   tmp_list = tmp_list->prev;
5233                 continue;
5234               }
5235
5236             if (!tree_view->priv->column_drop_func)
5237               return left_column;
5238
5239             if (tree_view->priv->column_drop_func (tree_view, column, left_column, cur_column, tree_view->priv->column_drop_func_data))
5240               return left_column;
5241
5242             cur_column = left_column;
5243             tmp_list = tmp_list->prev;
5244           }
5245
5246         if (!tree_view->priv->column_drop_func)
5247           return NULL;
5248
5249         if (tree_view->priv->column_drop_func (tree_view, column, NULL, cur_column, tree_view->priv->column_drop_func_data))
5250           return NULL;
5251         else
5252           return (GtkTreeViewColumn *)0x1;
5253         break;
5254
5255       case DROP_END:
5256         /* same as DROP_HOME case, but doing it backwards */
5257         tmp_list = g_list_last (tree_view->priv->columns);
5258         cur_column = NULL;
5259
5260         if (column == GTK_TREE_VIEW_COLUMN (tmp_list->data))
5261           return (GtkTreeViewColumn *)0x1;
5262
5263         while (tmp_list)
5264           {
5265             g_assert (tmp_list);
5266
5267             left_column = GTK_TREE_VIEW_COLUMN (tmp_list->data);
5268
5269             if (left_column && !left_column->visible)
5270               {
5271                 cur_column = left_column;
5272                 tmp_list = tmp_list->prev;
5273               }
5274
5275             if (!tree_view->priv->column_drop_func)
5276               return left_column;
5277
5278             if (tree_view->priv->column_drop_func (tree_view, column, left_column, cur_column, tree_view->priv->column_drop_func_data))
5279               return left_column;
5280
5281             cur_column = left_column;
5282             tmp_list = tmp_list->prev;
5283           }
5284
5285         if (!tree_view->priv->column_drop_func)
5286           return NULL;
5287
5288         if (tree_view->priv->column_drop_func (tree_view, column, NULL, cur_column, tree_view->priv->column_drop_func_data))
5289           return NULL;
5290         else
5291           return (GtkTreeViewColumn *)0x1;
5292         break;
5293     }
5294
5295   return (GtkTreeViewColumn *)0x1;
5296 }
5297
5298 static gboolean
5299 gtk_tree_view_key_press (GtkWidget   *widget,
5300                          GdkEventKey *event)
5301 {
5302   GtkTreeView *tree_view = (GtkTreeView *) widget;
5303
5304   if (tree_view->priv->rubber_band_status)
5305     {
5306       if (event->keyval == GDK_KEY_Escape)
5307         gtk_tree_view_stop_rubber_band (tree_view);
5308
5309       return TRUE;
5310     }
5311
5312   if (GTK_TREE_VIEW_FLAG_SET (tree_view, GTK_TREE_VIEW_IN_COLUMN_DRAG))
5313     {
5314       if (event->keyval == GDK_KEY_Escape)
5315         {
5316           tree_view->priv->cur_reorder = NULL;
5317           gtk_tree_view_button_release_drag_column (widget, NULL);
5318         }
5319       return TRUE;
5320     }
5321
5322   if (GTK_TREE_VIEW_FLAG_SET (tree_view, GTK_TREE_VIEW_HEADERS_VISIBLE))
5323     {
5324       GList *focus_column;
5325       gboolean rtl;
5326
5327       rtl = (gtk_widget_get_direction (GTK_WIDGET (tree_view)) == GTK_TEXT_DIR_RTL);
5328
5329       for (focus_column = tree_view->priv->columns;
5330            focus_column;
5331            focus_column = focus_column->next)
5332         {
5333           GtkTreeViewColumn *column = GTK_TREE_VIEW_COLUMN (focus_column->data);
5334
5335           if (gtk_widget_has_focus (column->button))
5336             break;
5337         }
5338
5339       if (focus_column &&
5340           (event->state & GDK_SHIFT_MASK) && (event->state & GDK_MOD1_MASK) &&
5341           (event->keyval == GDK_KEY_Left || event->keyval == GDK_KEY_KP_Left
5342            || event->keyval == GDK_KEY_Right || event->keyval == GDK_KEY_KP_Right))
5343         {
5344           GtkTreeViewColumn *column = GTK_TREE_VIEW_COLUMN (focus_column->data);
5345
5346           if (!column->resizable)
5347             {
5348               gtk_widget_error_bell (widget);
5349               return TRUE;
5350             }
5351
5352           if (event->keyval == (rtl ? GDK_KEY_Right : GDK_KEY_Left)
5353               || event->keyval == (rtl ? GDK_KEY_KP_Right : GDK_KEY_KP_Left))
5354             {
5355               GtkRequisition button_req;
5356               gint old_width = column->resized_width;
5357
5358               gtk_size_request_get_size (GTK_SIZE_REQUEST (column->button), &button_req, NULL);
5359
5360               column->resized_width = MAX (column->resized_width,
5361                                            column->width);
5362               column->resized_width -= 2;
5363               if (column->resized_width < 0)
5364                 column->resized_width = 0;
5365
5366               if (column->min_width == -1)
5367                 column->resized_width = MAX (button_req.width,
5368                                              column->resized_width);
5369               else
5370                 {
5371                   column->resized_width = MAX (column->min_width,
5372                                                column->resized_width);
5373                 }
5374
5375               if (column->max_width != -1)
5376                 column->resized_width = MIN (column->resized_width,
5377                                              column->max_width);
5378
5379               column->use_resized_width = TRUE;
5380
5381               if (column->resized_width != old_width)
5382                 gtk_widget_queue_resize (widget);
5383               else
5384                 gtk_widget_error_bell (widget);
5385             }
5386           else if (event->keyval == (rtl ? GDK_KEY_Left : GDK_KEY_Right)
5387                    || event->keyval == (rtl ? GDK_KEY_KP_Left : GDK_KEY_KP_Right))
5388             {
5389               gint old_width = column->resized_width;
5390
5391               column->resized_width = MAX (column->resized_width,
5392                                            column->width);
5393               column->resized_width += 2;
5394
5395               if (column->max_width != -1)
5396                 column->resized_width = MIN (column->resized_width,
5397                                              column->max_width);
5398
5399               column->use_resized_width = TRUE;
5400
5401               if (column->resized_width != old_width)
5402                 gtk_widget_queue_resize (widget);
5403               else
5404                 gtk_widget_error_bell (widget);
5405             }
5406
5407           return TRUE;
5408         }
5409
5410       if (focus_column &&
5411           (event->state & GDK_MOD1_MASK) &&
5412           (event->keyval == GDK_KEY_Left || event->keyval == GDK_KEY_KP_Left
5413            || event->keyval == GDK_KEY_Right || event->keyval == GDK_KEY_KP_Right
5414            || event->keyval == GDK_KEY_Home || event->keyval == GDK_KEY_KP_Home
5415            || event->keyval == GDK_KEY_End || event->keyval == GDK_KEY_KP_End))
5416         {
5417           GtkTreeViewColumn *column = GTK_TREE_VIEW_COLUMN (focus_column->data);
5418
5419           if (event->keyval == (rtl ? GDK_KEY_Right : GDK_KEY_Left)
5420               || event->keyval == (rtl ? GDK_KEY_KP_Right : GDK_KEY_KP_Left))
5421             {
5422               GtkTreeViewColumn *col;
5423               col = gtk_tree_view_get_drop_column (tree_view, column, DROP_LEFT);
5424               if (col != (GtkTreeViewColumn *)0x1)
5425                 gtk_tree_view_move_column_after (tree_view, column, col);
5426               else
5427                 gtk_widget_error_bell (widget);
5428             }
5429           else if (event->keyval == (rtl ? GDK_KEY_Left : GDK_KEY_Right)
5430                    || event->keyval == (rtl ? GDK_KEY_KP_Left : GDK_KEY_KP_Right))
5431             {
5432               GtkTreeViewColumn *col;
5433               col = gtk_tree_view_get_drop_column (tree_view, column, DROP_RIGHT);
5434               if (col != (GtkTreeViewColumn *)0x1)
5435                 gtk_tree_view_move_column_after (tree_view, column, col);
5436               else
5437                 gtk_widget_error_bell (widget);
5438             }
5439           else if (event->keyval == GDK_KEY_Home || event->keyval == GDK_KEY_KP_Home)
5440             {
5441               GtkTreeViewColumn *col;
5442               col = gtk_tree_view_get_drop_column (tree_view, column, DROP_HOME);
5443               if (col != (GtkTreeViewColumn *)0x1)
5444                 gtk_tree_view_move_column_after (tree_view, column, col);
5445               else
5446                 gtk_widget_error_bell (widget);
5447             }
5448           else if (event->keyval == GDK_KEY_End || event->keyval == GDK_KEY_KP_End)
5449             {
5450               GtkTreeViewColumn *col;
5451               col = gtk_tree_view_get_drop_column (tree_view, column, DROP_END);
5452               if (col != (GtkTreeViewColumn *)0x1)
5453                 gtk_tree_view_move_column_after (tree_view, column, col);
5454               else
5455                 gtk_widget_error_bell (widget);
5456             }
5457
5458           return TRUE;
5459         }
5460     }
5461
5462   /* Chain up to the parent class.  It handles the keybindings. */
5463   if (GTK_WIDGET_CLASS (gtk_tree_view_parent_class)->key_press_event (widget, event))
5464     return TRUE;
5465
5466   if (tree_view->priv->search_entry_avoid_unhandled_binding)
5467     {
5468       tree_view->priv->search_entry_avoid_unhandled_binding = FALSE;
5469       return FALSE;
5470     }
5471
5472   /* We pass the event to the search_entry.  If its text changes, then we start
5473    * the typeahead find capabilities. */
5474   if (gtk_widget_has_focus (GTK_WIDGET (tree_view))
5475       && tree_view->priv->enable_search
5476       && !tree_view->priv->search_custom_entry_set)
5477     {
5478       GdkEvent *new_event;
5479       char *old_text;
5480       const char *new_text;
5481       gboolean retval;
5482       GdkScreen *screen;
5483       gboolean text_modified;
5484       gulong popup_menu_id;
5485
5486       gtk_tree_view_ensure_interactive_directory (tree_view);
5487
5488       /* Make a copy of the current text */
5489       old_text = g_strdup (gtk_entry_get_text (GTK_ENTRY (tree_view->priv->search_entry)));
5490       new_event = gdk_event_copy ((GdkEvent *) event);
5491       g_object_unref (((GdkEventKey *) new_event)->window);
5492       ((GdkEventKey *) new_event)->window = g_object_ref (gtk_widget_get_window (tree_view->priv->search_window));
5493       gtk_widget_realize (tree_view->priv->search_window);
5494
5495       popup_menu_id = g_signal_connect (tree_view->priv->search_entry,
5496                                         "popup-menu", G_CALLBACK (gtk_true),
5497                                         NULL);
5498
5499       /* Move the entry off screen */
5500       screen = gtk_widget_get_screen (GTK_WIDGET (tree_view));
5501       gtk_window_move (GTK_WINDOW (tree_view->priv->search_window),
5502                        gdk_screen_get_width (screen) + 1,
5503                        gdk_screen_get_height (screen) + 1);
5504       gtk_widget_show (tree_view->priv->search_window);
5505
5506       /* Send the event to the window.  If the preedit_changed signal is emitted
5507        * during this event, we will set priv->imcontext_changed  */
5508       tree_view->priv->imcontext_changed = FALSE;
5509       retval = gtk_widget_event (tree_view->priv->search_window, new_event);
5510       gdk_event_free (new_event);
5511       gtk_widget_hide (tree_view->priv->search_window);
5512
5513       g_signal_handler_disconnect (tree_view->priv->search_entry,
5514                                    popup_menu_id);
5515
5516       /* We check to make sure that the entry tried to handle the text, and that
5517        * the text has changed.
5518        */
5519       new_text = gtk_entry_get_text (GTK_ENTRY (tree_view->priv->search_entry));
5520       text_modified = strcmp (old_text, new_text) != 0;
5521       g_free (old_text);
5522       if (tree_view->priv->imcontext_changed ||    /* we're in a preedit */
5523           (retval && text_modified))               /* ...or the text was modified */
5524         {
5525           if (gtk_tree_view_real_start_interactive_search (tree_view,
5526                                                            gdk_event_get_device ((GdkEvent *) event),
5527                                                            FALSE))
5528             {
5529               gtk_widget_grab_focus (GTK_WIDGET (tree_view));
5530               return TRUE;
5531             }
5532           else
5533             {
5534               gtk_entry_set_text (GTK_ENTRY (tree_view->priv->search_entry), "");
5535               return FALSE;
5536             }
5537         }
5538     }
5539
5540   return FALSE;
5541 }
5542
5543 static gboolean
5544 gtk_tree_view_key_release (GtkWidget   *widget,
5545                            GdkEventKey *event)
5546 {
5547   GtkTreeView *tree_view = GTK_TREE_VIEW (widget);
5548
5549   if (tree_view->priv->rubber_band_status)
5550     return TRUE;
5551
5552   return GTK_WIDGET_CLASS (gtk_tree_view_parent_class)->key_release_event (widget, event);
5553 }
5554
5555 /* FIXME Is this function necessary? Can I get an enter_notify event
5556  * w/o either an expose event or a mouse motion event?
5557  */
5558 static gboolean
5559 gtk_tree_view_enter_notify (GtkWidget        *widget,
5560                             GdkEventCrossing *event)
5561 {
5562   GtkTreeView *tree_view = GTK_TREE_VIEW (widget);
5563   GtkRBTree *tree;
5564   GtkRBNode *node;
5565   gint new_y;
5566
5567   /* Sanity check it */
5568   if (event->window != tree_view->priv->bin_window)
5569     return FALSE;
5570
5571   if (tree_view->priv->tree == NULL)
5572     return FALSE;
5573
5574   if (event->mode == GDK_CROSSING_GRAB ||
5575       event->mode == GDK_CROSSING_GTK_GRAB ||
5576       event->mode == GDK_CROSSING_GTK_UNGRAB ||
5577       event->mode == GDK_CROSSING_STATE_CHANGED)
5578     return TRUE;
5579
5580   /* find the node internally */
5581   new_y = TREE_WINDOW_Y_TO_RBTREE_Y(tree_view, event->y);
5582   if (new_y < 0)
5583     new_y = 0;
5584   _gtk_rbtree_find_offset (tree_view->priv->tree, new_y, &tree, &node);
5585
5586   tree_view->priv->event_last_x = event->x;
5587   tree_view->priv->event_last_y = event->y;
5588
5589   if ((tree_view->priv->button_pressed_node == NULL) ||
5590       (tree_view->priv->button_pressed_node == node))
5591     prelight_or_select (tree_view, tree, node, event->x, event->y);
5592
5593   return TRUE;
5594 }
5595
5596 static gboolean
5597 gtk_tree_view_leave_notify (GtkWidget        *widget,
5598                             GdkEventCrossing *event)
5599 {
5600   GtkTreeView *tree_view;
5601
5602   if (event->mode == GDK_CROSSING_GRAB)
5603     return TRUE;
5604
5605   tree_view = GTK_TREE_VIEW (widget);
5606
5607   if (tree_view->priv->prelight_node)
5608     _gtk_tree_view_queue_draw_node (tree_view,
5609                                    tree_view->priv->prelight_tree,
5610                                    tree_view->priv->prelight_node,
5611                                    NULL);
5612
5613   tree_view->priv->event_last_x = -10000;
5614   tree_view->priv->event_last_y = -10000;
5615
5616   prelight_or_select (tree_view,
5617                       NULL, NULL,
5618                       -1000, -1000); /* coords not possibly over an arrow */
5619
5620   return TRUE;
5621 }
5622
5623
5624 static gint
5625 gtk_tree_view_focus_out (GtkWidget     *widget,
5626                          GdkEventFocus *event)
5627 {
5628   GtkTreeView *tree_view;
5629
5630   tree_view = GTK_TREE_VIEW (widget);
5631
5632   gtk_widget_queue_draw (widget);
5633
5634   /* destroy interactive search dialog */
5635   if (tree_view->priv->search_window)
5636     gtk_tree_view_search_dialog_hide (tree_view->priv->search_window, tree_view,
5637                                       gdk_event_get_device ((GdkEvent *) event));
5638
5639   return FALSE;
5640 }
5641
5642
5643 /* Incremental Reflow
5644  */
5645
5646 static void
5647 gtk_tree_view_node_queue_redraw (GtkTreeView *tree_view,
5648                                  GtkRBTree   *tree,
5649                                  GtkRBNode   *node)
5650 {
5651   GtkAllocation allocation;
5652   gint y;
5653
5654   y = _gtk_rbtree_node_find_offset (tree, node)
5655     - tree_view->priv->vadjustment->value
5656     + TREE_VIEW_HEADER_HEIGHT (tree_view);
5657
5658   gtk_widget_get_allocation (GTK_WIDGET (tree_view), &allocation);
5659   gtk_widget_queue_draw_area (GTK_WIDGET (tree_view),
5660                               0, y,
5661                               allocation.width,
5662                               GTK_RBNODE_GET_HEIGHT (node));
5663 }
5664
5665 static gboolean
5666 node_is_visible (GtkTreeView *tree_view,
5667                  GtkRBTree   *tree,
5668                  GtkRBNode   *node)
5669 {
5670   int y;
5671   int height;
5672
5673   y = _gtk_rbtree_node_find_offset (tree, node);
5674   height = ROW_HEIGHT (tree_view, GTK_RBNODE_GET_HEIGHT (node));
5675
5676   if (y >= tree_view->priv->vadjustment->value &&
5677       y + height <= (tree_view->priv->vadjustment->value
5678                      + tree_view->priv->vadjustment->page_size))
5679     return TRUE;
5680
5681   return FALSE;
5682 }
5683
5684 /* Returns TRUE if it updated the size
5685  */
5686 static gboolean
5687 validate_row (GtkTreeView *tree_view,
5688               GtkRBTree   *tree,
5689               GtkRBNode   *node,
5690               GtkTreeIter *iter,
5691               GtkTreePath *path)
5692 {
5693   GtkTreeViewColumn *column;
5694   GList *list, *first_column, *last_column;
5695   gint height = 0;
5696   gint horizontal_separator;
5697   gint vertical_separator;
5698   gint focus_line_width;
5699   gint depth = gtk_tree_path_get_depth (path);
5700   gboolean retval = FALSE;
5701   gboolean is_separator = FALSE;
5702   gboolean draw_vgrid_lines, draw_hgrid_lines;
5703   gint focus_pad;
5704   gint grid_line_width;
5705   gboolean wide_separators;
5706   gint separator_height;
5707
5708   /* double check the row needs validating */
5709   if (! GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_INVALID) &&
5710       ! GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_COLUMN_INVALID))
5711     return FALSE;
5712
5713   is_separator = row_is_separator (tree_view, iter, NULL);
5714
5715   gtk_widget_style_get (GTK_WIDGET (tree_view),
5716                         "focus-padding", &focus_pad,
5717                         "focus-line-width", &focus_line_width,
5718                         "horizontal-separator", &horizontal_separator,
5719                         "vertical-separator", &vertical_separator,
5720                         "grid-line-width", &grid_line_width,
5721                         "wide-separators",  &wide_separators,
5722                         "separator-height", &separator_height,
5723                         NULL);
5724
5725   draw_vgrid_lines =
5726     tree_view->priv->grid_lines == GTK_TREE_VIEW_GRID_LINES_VERTICAL
5727     || tree_view->priv->grid_lines == GTK_TREE_VIEW_GRID_LINES_BOTH;
5728   draw_hgrid_lines =
5729     tree_view->priv->grid_lines == GTK_TREE_VIEW_GRID_LINES_HORIZONTAL
5730     || tree_view->priv->grid_lines == GTK_TREE_VIEW_GRID_LINES_BOTH;
5731
5732   for (last_column = g_list_last (tree_view->priv->columns);
5733        last_column && !(GTK_TREE_VIEW_COLUMN (last_column->data)->visible);
5734        last_column = last_column->prev)
5735     ;
5736
5737   for (first_column = g_list_first (tree_view->priv->columns);
5738        first_column && !(GTK_TREE_VIEW_COLUMN (first_column->data)->visible);
5739        first_column = first_column->next)
5740     ;
5741
5742   for (list = tree_view->priv->columns; list; list = list->next)
5743     {
5744       gint tmp_width;
5745       gint tmp_height;
5746
5747       column = list->data;
5748
5749       if (! column->visible)
5750         continue;
5751
5752       if (GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_COLUMN_INVALID) && !column->dirty)
5753         continue;
5754
5755       gtk_tree_view_column_cell_set_cell_data (column, tree_view->priv->model, iter,
5756                                                GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_PARENT),
5757                                                node->children?TRUE:FALSE);
5758       gtk_tree_view_column_cell_get_size (column,
5759                                           NULL, NULL, NULL,
5760                                           &tmp_width, &tmp_height);
5761
5762       if (!is_separator)
5763         {
5764           tmp_height += vertical_separator;
5765           height = MAX (height, tmp_height);
5766           height = MAX (height, tree_view->priv->expander_size);
5767         }
5768       else
5769         {
5770           if (wide_separators)
5771             height = separator_height + 2 * focus_pad;
5772           else
5773             height = 2 + 2 * focus_pad;
5774         }
5775
5776       if (gtk_tree_view_is_expander_column (tree_view, column))
5777         {
5778           tmp_width = tmp_width + horizontal_separator + (depth - 1) * tree_view->priv->level_indentation;
5779
5780           if (TREE_VIEW_DRAW_EXPANDERS (tree_view))
5781             tmp_width += depth * tree_view->priv->expander_size;
5782         }
5783       else
5784         tmp_width = tmp_width + horizontal_separator;
5785
5786       if (draw_vgrid_lines)
5787         {
5788           if (list->data == first_column || list->data == last_column)
5789             tmp_width += grid_line_width / 2.0;
5790           else
5791             tmp_width += grid_line_width;
5792         }
5793
5794       if (tmp_width > column->requested_width)
5795         {
5796           retval = TRUE;
5797           column->requested_width = tmp_width;
5798         }
5799     }
5800
5801   if (draw_hgrid_lines)
5802     height += grid_line_width;
5803
5804   if (height != GTK_RBNODE_GET_HEIGHT (node))
5805     {
5806       retval = TRUE;
5807       _gtk_rbtree_node_set_height (tree, node, height);
5808     }
5809   _gtk_rbtree_node_mark_valid (tree, node);
5810   tree_view->priv->post_validation_flag = TRUE;
5811
5812   return retval;
5813 }
5814
5815
5816 static void
5817 validate_visible_area (GtkTreeView *tree_view)
5818 {
5819   GtkAllocation allocation;
5820   GtkTreePath *path = NULL;
5821   GtkTreePath *above_path = NULL;
5822   GtkTreeIter iter;
5823   GtkRBTree *tree = NULL;
5824   GtkRBNode *node = NULL;
5825   gboolean need_redraw = FALSE;
5826   gboolean size_changed = FALSE;
5827   gint total_height;
5828   gint area_above = 0;
5829   gint area_below = 0;
5830
5831   if (tree_view->priv->tree == NULL)
5832     return;
5833
5834   if (! GTK_RBNODE_FLAG_SET (tree_view->priv->tree->root, GTK_RBNODE_DESCENDANTS_INVALID) &&
5835       tree_view->priv->scroll_to_path == NULL)
5836     return;
5837
5838   gtk_widget_get_allocation (GTK_WIDGET (tree_view), &allocation);
5839   total_height = allocation.height - TREE_VIEW_HEADER_HEIGHT (tree_view);
5840
5841   if (total_height == 0)
5842     return;
5843
5844   /* First, we check to see if we need to scroll anywhere
5845    */
5846   if (tree_view->priv->scroll_to_path)
5847     {
5848       path = gtk_tree_row_reference_get_path (tree_view->priv->scroll_to_path);
5849       if (path && !_gtk_tree_view_find_node (tree_view, path, &tree, &node))
5850         {
5851           /* we are going to scroll, and will update dy */
5852           gtk_tree_model_get_iter (tree_view->priv->model, &iter, path);
5853           if (GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_INVALID) ||
5854               GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_COLUMN_INVALID))
5855             {
5856               _gtk_tree_view_queue_draw_node (tree_view, tree, node, NULL);
5857               if (validate_row (tree_view, tree, node, &iter, path))
5858                 size_changed = TRUE;
5859             }
5860
5861           if (tree_view->priv->scroll_to_use_align)
5862             {
5863               gint height = ROW_HEIGHT (tree_view, GTK_RBNODE_GET_HEIGHT (node));
5864               area_above = (total_height - height) *
5865                 tree_view->priv->scroll_to_row_align;
5866               area_below = total_height - area_above - height;
5867               area_above = MAX (area_above, 0);
5868               area_below = MAX (area_below, 0);
5869             }
5870           else
5871             {
5872               /* two cases:
5873                * 1) row not visible
5874                * 2) row visible
5875                */
5876               gint dy;
5877               gint height = ROW_HEIGHT (tree_view, GTK_RBNODE_GET_HEIGHT (node));
5878
5879               dy = _gtk_rbtree_node_find_offset (tree, node);
5880
5881               if (dy >= tree_view->priv->vadjustment->value &&
5882                   dy + height <= (tree_view->priv->vadjustment->value
5883                                   + tree_view->priv->vadjustment->page_size))
5884                 {
5885                   /* row visible: keep the row at the same position */
5886                   area_above = dy - tree_view->priv->vadjustment->value;
5887                   area_below = (tree_view->priv->vadjustment->value +
5888                                 tree_view->priv->vadjustment->page_size)
5889                                - dy - height;
5890                 }
5891               else
5892                 {
5893                   /* row not visible */
5894                   if (dy >= 0
5895                       && dy + height <= tree_view->priv->vadjustment->page_size)
5896                     {
5897                       /* row at the beginning -- fixed */
5898                       area_above = dy;
5899                       area_below = tree_view->priv->vadjustment->page_size
5900                                    - area_above - height;
5901                     }
5902                   else if (dy >= (tree_view->priv->vadjustment->upper -
5903                                   tree_view->priv->vadjustment->page_size))
5904                     {
5905                       /* row at the end -- fixed */
5906                       area_above = dy - (tree_view->priv->vadjustment->upper -
5907                                    tree_view->priv->vadjustment->page_size);
5908                       area_below = tree_view->priv->vadjustment->page_size -
5909                                    area_above - height;
5910
5911                       if (area_below < 0)
5912                         {
5913                           area_above = tree_view->priv->vadjustment->page_size - height;
5914                           area_below = 0;
5915                         }
5916                     }
5917                   else
5918                     {
5919                       /* row somewhere in the middle, bring it to the top
5920                        * of the view
5921                        */
5922                       area_above = 0;
5923                       area_below = total_height - height;
5924                     }
5925                 }
5926             }
5927         }
5928       else
5929         /* the scroll to isn't valid; ignore it.
5930          */
5931         {
5932           if (tree_view->priv->scroll_to_path && !path)
5933             {
5934               gtk_tree_row_reference_free (tree_view->priv->scroll_to_path);
5935               tree_view->priv->scroll_to_path = NULL;
5936             }
5937           if (path)
5938             gtk_tree_path_free (path);
5939           path = NULL;
5940         }
5941     }
5942
5943   /* We didn't have a scroll_to set, so we just handle things normally
5944    */
5945   if (path == NULL)
5946     {
5947       gint offset;
5948
5949       offset = _gtk_rbtree_find_offset (tree_view->priv->tree,
5950                                         TREE_WINDOW_Y_TO_RBTREE_Y (tree_view, 0),
5951                                         &tree, &node);
5952       if (node == NULL)
5953         {
5954           /* In this case, nothing has been validated */
5955           path = gtk_tree_path_new_first ();
5956           _gtk_tree_view_find_node (tree_view, path, &tree, &node);
5957         }
5958       else
5959         {
5960           path = _gtk_tree_view_find_path (tree_view, tree, node);
5961           total_height += offset;
5962         }
5963
5964       gtk_tree_model_get_iter (tree_view->priv->model, &iter, path);
5965
5966       if (GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_INVALID) ||
5967           GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_COLUMN_INVALID))
5968         {
5969           _gtk_tree_view_queue_draw_node (tree_view, tree, node, NULL);
5970           if (validate_row (tree_view, tree, node, &iter, path))
5971             size_changed = TRUE;
5972         }
5973       area_above = 0;
5974       area_below = total_height - ROW_HEIGHT (tree_view, GTK_RBNODE_GET_HEIGHT (node));
5975     }
5976
5977   above_path = gtk_tree_path_copy (path);
5978
5979   /* if we do not validate any row above the new top_row, we will make sure
5980    * that the row immediately above top_row has been validated. (if we do not
5981    * do this, _gtk_rbtree_find_offset will find the row above top_row, because
5982    * when invalidated that row's height will be zero. and this will mess up
5983    * scrolling).
5984    */
5985   if (area_above == 0)
5986     {
5987       GtkRBTree *tmptree;
5988       GtkRBNode *tmpnode;
5989
5990       _gtk_tree_view_find_node (tree_view, above_path, &tmptree, &tmpnode);
5991       _gtk_rbtree_prev_full (tmptree, tmpnode, &tmptree, &tmpnode);
5992
5993       if (tmpnode)
5994         {
5995           GtkTreePath *tmppath;
5996           GtkTreeIter tmpiter;
5997
5998           tmppath = _gtk_tree_view_find_path (tree_view, tmptree, tmpnode);
5999           gtk_tree_model_get_iter (tree_view->priv->model, &tmpiter, tmppath);
6000
6001           if (GTK_RBNODE_FLAG_SET (tmpnode, GTK_RBNODE_INVALID) ||
6002               GTK_RBNODE_FLAG_SET (tmpnode, GTK_RBNODE_COLUMN_INVALID))
6003             {
6004               _gtk_tree_view_queue_draw_node (tree_view, tmptree, tmpnode, NULL);
6005               if (validate_row (tree_view, tmptree, tmpnode, &tmpiter, tmppath))
6006                 size_changed = TRUE;
6007             }
6008
6009           gtk_tree_path_free (tmppath);
6010         }
6011     }
6012
6013   /* Now, we walk forwards and backwards, measuring rows. Unfortunately,
6014    * backwards is much slower then forward, as there is no iter_prev function.
6015    * We go forwards first in case we run out of tree.  Then we go backwards to
6016    * fill out the top.
6017    */
6018   while (node && area_below > 0)
6019     {
6020       if (node->children)
6021         {
6022           GtkTreeIter parent = iter;
6023           gboolean has_child;
6024
6025           tree = node->children;
6026           node = tree->root;
6027
6028           g_assert (node != tree->nil);
6029
6030           while (node->left != tree->nil)
6031             node = node->left;
6032           has_child = gtk_tree_model_iter_children (tree_view->priv->model,
6033                                                     &iter,
6034                                                     &parent);
6035           TREE_VIEW_INTERNAL_ASSERT_VOID (has_child);
6036           gtk_tree_path_down (path);
6037         }
6038       else
6039         {
6040           gboolean done = FALSE;
6041           do
6042             {
6043               node = _gtk_rbtree_next (tree, node);
6044               if (node != NULL)
6045                 {
6046                   gboolean has_next = gtk_tree_model_iter_next (tree_view->priv->model, &iter);
6047                   done = TRUE;
6048                   gtk_tree_path_next (path);
6049
6050                   /* Sanity Check! */
6051                   TREE_VIEW_INTERNAL_ASSERT_VOID (has_next);
6052                 }
6053               else
6054                 {
6055                   GtkTreeIter parent_iter = iter;
6056                   gboolean has_parent;
6057
6058                   node = tree->parent_node;
6059                   tree = tree->parent_tree;
6060                   if (tree == NULL)
6061                     break;
6062                   has_parent = gtk_tree_model_iter_parent (tree_view->priv->model,
6063                                                            &iter,
6064                                                            &parent_iter);
6065                   gtk_tree_path_up (path);
6066
6067                   /* Sanity check */
6068                   TREE_VIEW_INTERNAL_ASSERT_VOID (has_parent);
6069                 }
6070             }
6071           while (!done);
6072         }
6073
6074       if (!node)
6075         break;
6076
6077       if (GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_INVALID) ||
6078           GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_COLUMN_INVALID))
6079         {
6080           _gtk_tree_view_queue_draw_node (tree_view, tree, node, NULL);
6081           if (validate_row (tree_view, tree, node, &iter, path))
6082               size_changed = TRUE;
6083         }
6084
6085       area_below -= ROW_HEIGHT (tree_view, GTK_RBNODE_GET_HEIGHT (node));
6086     }
6087   gtk_tree_path_free (path);
6088
6089   /* If we ran out of tree, and have extra area_below left, we need to add it
6090    * to area_above */
6091   if (area_below > 0)
6092     area_above += area_below;
6093
6094   _gtk_tree_view_find_node (tree_view, above_path, &tree, &node);
6095
6096   /* We walk backwards */
6097   while (area_above > 0)
6098     {
6099       _gtk_rbtree_prev_full (tree, node, &tree, &node);
6100
6101       /* Always find the new path in the tree.  We cannot just assume
6102        * a gtk_tree_path_prev() is enough here, as there might be children
6103        * in between this node and the previous sibling node.  If this
6104        * appears to be a performance hotspot in profiles, we can look into
6105        * intrigate logic for keeping path, node and iter in sync like
6106        * we do for forward walks.  (Which will be hard because of the lacking
6107        * iter_prev).
6108        */
6109
6110       if (node == NULL)
6111         break;
6112
6113       gtk_tree_path_free (above_path);
6114       above_path = _gtk_tree_view_find_path (tree_view, tree, node);
6115
6116       gtk_tree_model_get_iter (tree_view->priv->model, &iter, above_path);
6117
6118       if (GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_INVALID) ||
6119           GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_COLUMN_INVALID))
6120         {
6121           _gtk_tree_view_queue_draw_node (tree_view, tree, node, NULL);
6122           if (validate_row (tree_view, tree, node, &iter, above_path))
6123             size_changed = TRUE;
6124         }
6125       area_above -= ROW_HEIGHT (tree_view, GTK_RBNODE_GET_HEIGHT (node));
6126     }
6127
6128   /* if we scrolled to a path, we need to set the dy here,
6129    * and sync the top row accordingly
6130    */
6131   if (tree_view->priv->scroll_to_path)
6132     {
6133       gtk_tree_view_set_top_row (tree_view, above_path, -area_above);
6134       gtk_tree_view_top_row_to_dy (tree_view);
6135
6136       need_redraw = TRUE;
6137     }
6138   else if (tree_view->priv->height <= tree_view->priv->vadjustment->page_size)
6139     {
6140       /* when we are not scrolling, we should never set dy to something
6141        * else than zero. we update top_row to be in sync with dy = 0.
6142        */
6143       gtk_adjustment_set_value (GTK_ADJUSTMENT (tree_view->priv->vadjustment), 0);
6144       gtk_tree_view_dy_to_top_row (tree_view);
6145     }
6146   else if (tree_view->priv->vadjustment->value + tree_view->priv->vadjustment->page_size > tree_view->priv->height)
6147     {
6148       gtk_adjustment_set_value (GTK_ADJUSTMENT (tree_view->priv->vadjustment), tree_view->priv->height - tree_view->priv->vadjustment->page_size);
6149       gtk_tree_view_dy_to_top_row (tree_view);
6150     }
6151   else
6152     gtk_tree_view_top_row_to_dy (tree_view);
6153
6154   /* update width/height and queue a resize */
6155   if (size_changed)
6156     {
6157       GtkRequisition requisition;
6158
6159       /* We temporarily guess a size, under the assumption that it will be the
6160        * same when we get our next size_allocate.  If we don't do this, we'll be
6161        * in an inconsistent state if we call top_row_to_dy. */
6162
6163       gtk_size_request_get_size (GTK_SIZE_REQUEST (tree_view),
6164                                  &requisition, NULL);
6165       tree_view->priv->hadjustment->upper = MAX (tree_view->priv->hadjustment->upper, (gfloat)requisition.width);
6166       tree_view->priv->vadjustment->upper = MAX (tree_view->priv->vadjustment->upper, (gfloat)requisition.height);
6167       gtk_adjustment_changed (tree_view->priv->hadjustment);
6168       gtk_adjustment_changed (tree_view->priv->vadjustment);
6169       gtk_widget_queue_resize (GTK_WIDGET (tree_view));
6170     }
6171
6172   if (tree_view->priv->scroll_to_path)
6173     {
6174       gtk_tree_row_reference_free (tree_view->priv->scroll_to_path);
6175       tree_view->priv->scroll_to_path = NULL;
6176     }
6177
6178   if (above_path)
6179     gtk_tree_path_free (above_path);
6180
6181   if (tree_view->priv->scroll_to_column)
6182     {
6183       tree_view->priv->scroll_to_column = NULL;
6184     }
6185   if (need_redraw)
6186     gtk_widget_queue_draw (GTK_WIDGET (tree_view));
6187 }
6188
6189 static void
6190 initialize_fixed_height_mode (GtkTreeView *tree_view)
6191 {
6192   if (!tree_view->priv->tree)
6193     return;
6194
6195   if (tree_view->priv->fixed_height < 0)
6196     {
6197       GtkTreeIter iter;
6198       GtkTreePath *path;
6199
6200       GtkRBTree *tree = NULL;
6201       GtkRBNode *node = NULL;
6202
6203       tree = tree_view->priv->tree;
6204       node = tree->root;
6205
6206       path = _gtk_tree_view_find_path (tree_view, tree, node);
6207       gtk_tree_model_get_iter (tree_view->priv->model, &iter, path);
6208
6209       validate_row (tree_view, tree, node, &iter, path);
6210
6211       gtk_tree_path_free (path);
6212
6213       tree_view->priv->fixed_height = ROW_HEIGHT (tree_view, GTK_RBNODE_GET_HEIGHT (node));
6214     }
6215
6216    _gtk_rbtree_set_fixed_height (tree_view->priv->tree,
6217                                  tree_view->priv->fixed_height, TRUE);
6218 }
6219
6220 /* Our strategy for finding nodes to validate is a little convoluted.  We find
6221  * the left-most uninvalidated node.  We then try walking right, validating
6222  * nodes.  Once we find a valid node, we repeat the previous process of finding
6223  * the first invalid node.
6224  */
6225
6226 static gboolean
6227 do_validate_rows (GtkTreeView *tree_view, gboolean queue_resize)
6228 {
6229   GtkRBTree *tree = NULL;
6230   GtkRBNode *node = NULL;
6231   gboolean validated_area = FALSE;
6232   gint retval = TRUE;
6233   GtkTreePath *path = NULL;
6234   GtkTreeIter iter;
6235   GTimer *timer;
6236   gint i = 0;
6237
6238   gint prev_height = -1;
6239   gboolean fixed_height = TRUE;
6240
6241   g_assert (tree_view);
6242
6243   if (tree_view->priv->tree == NULL)
6244       return FALSE;
6245
6246   if (tree_view->priv->fixed_height_mode)
6247     {
6248       if (tree_view->priv->fixed_height < 0)
6249         initialize_fixed_height_mode (tree_view);
6250
6251       return FALSE;
6252     }
6253
6254   timer = g_timer_new ();
6255   g_timer_start (timer);
6256
6257   do
6258     {
6259       if (! GTK_RBNODE_FLAG_SET (tree_view->priv->tree->root, GTK_RBNODE_DESCENDANTS_INVALID))
6260         {
6261           retval = FALSE;
6262           goto done;
6263         }
6264
6265       if (path != NULL)
6266         {
6267           node = _gtk_rbtree_next (tree, node);
6268           if (node != NULL)
6269             {
6270               TREE_VIEW_INTERNAL_ASSERT (gtk_tree_model_iter_next (tree_view->priv->model, &iter), FALSE);
6271               gtk_tree_path_next (path);
6272             }
6273           else
6274             {
6275               gtk_tree_path_free (path);
6276               path = NULL;
6277             }
6278         }
6279
6280       if (path == NULL)
6281         {
6282           tree = tree_view->priv->tree;
6283           node = tree_view->priv->tree->root;
6284
6285           g_assert (GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_DESCENDANTS_INVALID));
6286
6287           do
6288             {
6289               if (node->left != tree->nil &&
6290                   GTK_RBNODE_FLAG_SET (node->left, GTK_RBNODE_DESCENDANTS_INVALID))
6291                 {
6292                   node = node->left;
6293                 }
6294               else if (node->right != tree->nil &&
6295                        GTK_RBNODE_FLAG_SET (node->right, GTK_RBNODE_DESCENDANTS_INVALID))
6296                 {
6297                   node = node->right;
6298                 }
6299               else if (GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_INVALID) ||
6300                        GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_COLUMN_INVALID))
6301                 {
6302                   break;
6303                 }
6304               else if (node->children != NULL)
6305                 {
6306                   tree = node->children;
6307                   node = tree->root;
6308                 }
6309               else
6310                 /* RBTree corruption!  All bad */
6311                 g_assert_not_reached ();
6312             }
6313           while (TRUE);
6314           path = _gtk_tree_view_find_path (tree_view, tree, node);
6315           gtk_tree_model_get_iter (tree_view->priv->model, &iter, path);
6316         }
6317
6318       validated_area = validate_row (tree_view, tree, node, &iter, path) ||
6319                        validated_area;
6320
6321       if (!tree_view->priv->fixed_height_check)
6322         {
6323           gint height;
6324
6325           height = ROW_HEIGHT (tree_view, GTK_RBNODE_GET_HEIGHT (node));
6326           if (prev_height < 0)
6327             prev_height = height;
6328           else if (prev_height != height)
6329             fixed_height = FALSE;
6330         }
6331
6332       i++;
6333     }
6334   while (g_timer_elapsed (timer, NULL) < GTK_TREE_VIEW_TIME_MS_PER_IDLE / 1000.);
6335
6336   if (!tree_view->priv->fixed_height_check)
6337    {
6338      if (fixed_height)
6339        _gtk_rbtree_set_fixed_height (tree_view->priv->tree, prev_height, FALSE);
6340
6341      tree_view->priv->fixed_height_check = 1;
6342    }
6343
6344  done:
6345   if (validated_area)
6346     {
6347       GtkRequisition requisition;
6348       /* We temporarily guess a size, under the assumption that it will be the
6349        * same when we get our next size_allocate.  If we don't do this, we'll be
6350        * in an inconsistent state when we call top_row_to_dy. */
6351
6352       gtk_size_request_get_size (GTK_SIZE_REQUEST (tree_view),
6353                                  &requisition, NULL);
6354       tree_view->priv->hadjustment->upper = MAX (tree_view->priv->hadjustment->upper, (gfloat)requisition.width);
6355       tree_view->priv->vadjustment->upper = MAX (tree_view->priv->vadjustment->upper, (gfloat)requisition.height);
6356       gtk_adjustment_changed (tree_view->priv->hadjustment);
6357       gtk_adjustment_changed (tree_view->priv->vadjustment);
6358
6359       if (queue_resize)
6360         gtk_widget_queue_resize (GTK_WIDGET (tree_view));
6361     }
6362
6363   if (path) gtk_tree_path_free (path);
6364   g_timer_destroy (timer);
6365
6366   return retval;
6367 }
6368
6369 static gboolean
6370 validate_rows (GtkTreeView *tree_view)
6371 {
6372   gboolean retval;
6373
6374   retval = do_validate_rows (tree_view, TRUE);
6375
6376   if (! retval && tree_view->priv->validate_rows_timer)
6377     {
6378       g_source_remove (tree_view->priv->validate_rows_timer);
6379       tree_view->priv->validate_rows_timer = 0;
6380     }
6381
6382   return retval;
6383 }
6384
6385 static gboolean
6386 validate_rows_handler (GtkTreeView *tree_view)
6387 {
6388   gboolean retval;
6389
6390   retval = do_validate_rows (tree_view, TRUE);
6391   if (! retval && tree_view->priv->validate_rows_timer)
6392     {
6393       g_source_remove (tree_view->priv->validate_rows_timer);
6394       tree_view->priv->validate_rows_timer = 0;
6395     }
6396
6397   return retval;
6398 }
6399
6400 static gboolean
6401 do_presize_handler (GtkTreeView *tree_view)
6402 {
6403   if (tree_view->priv->mark_rows_col_dirty)
6404     {
6405       if (tree_view->priv->tree)
6406         _gtk_rbtree_column_invalid (tree_view->priv->tree);
6407       tree_view->priv->mark_rows_col_dirty = FALSE;
6408     }
6409   validate_visible_area (tree_view);
6410   tree_view->priv->presize_handler_timer = 0;
6411
6412   if (tree_view->priv->fixed_height_mode)
6413     {
6414       GtkRequisition requisition;
6415
6416       gtk_size_request_get_size (GTK_SIZE_REQUEST (tree_view),
6417                                  &requisition, NULL);
6418
6419       tree_view->priv->hadjustment->upper = MAX (tree_view->priv->hadjustment->upper, (gfloat)requisition.width);
6420       tree_view->priv->vadjustment->upper = MAX (tree_view->priv->vadjustment->upper, (gfloat)requisition.height);
6421       gtk_adjustment_changed (tree_view->priv->hadjustment);
6422       gtk_adjustment_changed (tree_view->priv->vadjustment);
6423       gtk_widget_queue_resize (GTK_WIDGET (tree_view));
6424     }
6425
6426   return FALSE;
6427 }
6428
6429 static gboolean
6430 presize_handler_callback (gpointer data)
6431 {
6432   do_presize_handler (GTK_TREE_VIEW (data));
6433
6434   return FALSE;
6435 }
6436
6437 static void
6438 install_presize_handler (GtkTreeView *tree_view)
6439 {
6440   if (! gtk_widget_get_realized (GTK_WIDGET (tree_view)))
6441     return;
6442
6443   if (! tree_view->priv->presize_handler_timer)
6444     {
6445       tree_view->priv->presize_handler_timer =
6446         gdk_threads_add_idle_full (GTK_PRIORITY_RESIZE - 2, presize_handler_callback, tree_view, NULL);
6447     }
6448   if (! tree_view->priv->validate_rows_timer)
6449     {
6450       tree_view->priv->validate_rows_timer =
6451         gdk_threads_add_idle_full (GTK_TREE_VIEW_PRIORITY_VALIDATE, (GSourceFunc) validate_rows_handler, tree_view, NULL);
6452     }
6453 }
6454
6455 static gboolean
6456 scroll_sync_handler (GtkTreeView *tree_view)
6457 {
6458   if (tree_view->priv->height <= tree_view->priv->vadjustment->page_size)
6459     gtk_adjustment_set_value (GTK_ADJUSTMENT (tree_view->priv->vadjustment), 0);
6460   else if (gtk_tree_row_reference_valid (tree_view->priv->top_row))
6461     gtk_tree_view_top_row_to_dy (tree_view);
6462   else
6463     gtk_tree_view_dy_to_top_row (tree_view);
6464
6465   tree_view->priv->scroll_sync_timer = 0;
6466
6467   return FALSE;
6468 }
6469
6470 static void
6471 install_scroll_sync_handler (GtkTreeView *tree_view)
6472 {
6473   if (!gtk_widget_get_realized (GTK_WIDGET (tree_view)))
6474     return;
6475
6476   if (!tree_view->priv->scroll_sync_timer)
6477     {
6478       tree_view->priv->scroll_sync_timer =
6479         gdk_threads_add_idle_full (GTK_TREE_VIEW_PRIORITY_SCROLL_SYNC, (GSourceFunc) scroll_sync_handler, tree_view, NULL);
6480     }
6481 }
6482
6483 static void
6484 gtk_tree_view_set_top_row (GtkTreeView *tree_view,
6485                            GtkTreePath *path,
6486                            gint         offset)
6487 {
6488   gtk_tree_row_reference_free (tree_view->priv->top_row);
6489
6490   if (!path)
6491     {
6492       tree_view->priv->top_row = NULL;
6493       tree_view->priv->top_row_dy = 0;
6494     }
6495   else
6496     {
6497       tree_view->priv->top_row = gtk_tree_row_reference_new_proxy (G_OBJECT (tree_view), tree_view->priv->model, path);
6498       tree_view->priv->top_row_dy = offset;
6499     }
6500 }
6501
6502 /* Always call this iff dy is in the visible range.  If the tree is empty, then
6503  * it's set to be NULL, and top_row_dy is 0;
6504  */
6505 static void
6506 gtk_tree_view_dy_to_top_row (GtkTreeView *tree_view)
6507 {
6508   gint offset;
6509   GtkTreePath *path;
6510   GtkRBTree *tree;
6511   GtkRBNode *node;
6512
6513   if (tree_view->priv->tree == NULL)
6514     {
6515       gtk_tree_view_set_top_row (tree_view, NULL, 0);
6516     }
6517   else
6518     {
6519       offset = _gtk_rbtree_find_offset (tree_view->priv->tree,
6520                                         tree_view->priv->dy,
6521                                         &tree, &node);
6522
6523       if (tree == NULL)
6524         {
6525           gtk_tree_view_set_top_row (tree_view, NULL, 0);
6526         }
6527       else
6528         {
6529           path = _gtk_tree_view_find_path (tree_view, tree, node);
6530           gtk_tree_view_set_top_row (tree_view, path, offset);
6531           gtk_tree_path_free (path);
6532         }
6533     }
6534 }
6535
6536 static void
6537 gtk_tree_view_top_row_to_dy (GtkTreeView *tree_view)
6538 {
6539   GtkTreePath *path;
6540   GtkRBTree *tree;
6541   GtkRBNode *node;
6542   int new_dy;
6543
6544   /* Avoid recursive calls */
6545   if (tree_view->priv->in_top_row_to_dy)
6546     return;
6547
6548   if (tree_view->priv->top_row)
6549     path = gtk_tree_row_reference_get_path (tree_view->priv->top_row);
6550   else
6551     path = NULL;
6552
6553   if (!path)
6554     tree = NULL;
6555   else
6556     _gtk_tree_view_find_node (tree_view, path, &tree, &node);
6557
6558   if (path)
6559     gtk_tree_path_free (path);
6560
6561   if (tree == NULL)
6562     {
6563       /* keep dy and set new toprow */
6564       gtk_tree_row_reference_free (tree_view->priv->top_row);
6565       tree_view->priv->top_row = NULL;
6566       tree_view->priv->top_row_dy = 0;
6567       /* DO NOT install the idle handler */
6568       gtk_tree_view_dy_to_top_row (tree_view);
6569       return;
6570     }
6571
6572   if (ROW_HEIGHT (tree_view, BACKGROUND_HEIGHT (node))
6573       < tree_view->priv->top_row_dy)
6574     {
6575       /* new top row -- do NOT install the idle handler */
6576       gtk_tree_view_dy_to_top_row (tree_view);
6577       return;
6578     }
6579
6580   new_dy = _gtk_rbtree_node_find_offset (tree, node);
6581   new_dy += tree_view->priv->top_row_dy;
6582
6583   if (new_dy + tree_view->priv->vadjustment->page_size > tree_view->priv->height)
6584     new_dy = tree_view->priv->height - tree_view->priv->vadjustment->page_size;
6585
6586   new_dy = MAX (0, new_dy);
6587
6588   tree_view->priv->in_top_row_to_dy = TRUE;
6589   gtk_adjustment_set_value (tree_view->priv->vadjustment, (gdouble)new_dy);
6590   tree_view->priv->in_top_row_to_dy = FALSE;
6591 }
6592
6593
6594 void
6595 _gtk_tree_view_install_mark_rows_col_dirty (GtkTreeView *tree_view)
6596 {
6597   tree_view->priv->mark_rows_col_dirty = TRUE;
6598
6599   install_presize_handler (tree_view);
6600 }
6601
6602 /*
6603  * This function works synchronously (due to the while (validate_rows...)
6604  * loop).
6605  *
6606  * There was a check for column_type != GTK_TREE_VIEW_COLUMN_AUTOSIZE
6607  * here. You now need to check that yourself.
6608  */
6609 void
6610 _gtk_tree_view_column_autosize (GtkTreeView *tree_view,
6611                                 GtkTreeViewColumn *column)
6612 {
6613   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
6614   g_return_if_fail (GTK_IS_TREE_VIEW_COLUMN (column));
6615
6616   _gtk_tree_view_column_cell_set_dirty (column, FALSE);
6617
6618   do_presize_handler (tree_view);
6619   while (validate_rows (tree_view));
6620
6621   gtk_widget_queue_resize (GTK_WIDGET (tree_view));
6622 }
6623
6624 /* Drag-and-drop */
6625
6626 static void
6627 set_source_row (GdkDragContext *context,
6628                 GtkTreeModel   *model,
6629                 GtkTreePath    *source_row)
6630 {
6631   g_object_set_data_full (G_OBJECT (context),
6632                           I_("gtk-tree-view-source-row"),
6633                           source_row ? gtk_tree_row_reference_new (model, source_row) : NULL,
6634                           (GDestroyNotify) (source_row ? gtk_tree_row_reference_free : NULL));
6635 }
6636
6637 static GtkTreePath*
6638 get_source_row (GdkDragContext *context)
6639 {
6640   GtkTreeRowReference *ref =
6641     g_object_get_data (G_OBJECT (context), "gtk-tree-view-source-row");
6642
6643   if (ref)
6644     return gtk_tree_row_reference_get_path (ref);
6645   else
6646     return NULL;
6647 }
6648
6649 typedef struct
6650 {
6651   GtkTreeRowReference *dest_row;
6652   guint                path_down_mode   : 1;
6653   guint                empty_view_drop  : 1;
6654   guint                drop_append_mode : 1;
6655 }
6656 DestRow;
6657
6658 static void
6659 dest_row_free (gpointer data)
6660 {
6661   DestRow *dr = (DestRow *)data;
6662
6663   gtk_tree_row_reference_free (dr->dest_row);
6664   g_slice_free (DestRow, dr);
6665 }
6666
6667 static void
6668 set_dest_row (GdkDragContext *context,
6669               GtkTreeModel   *model,
6670               GtkTreePath    *dest_row,
6671               gboolean        path_down_mode,
6672               gboolean        empty_view_drop,
6673               gboolean        drop_append_mode)
6674 {
6675   DestRow *dr;
6676
6677   if (!dest_row)
6678     {
6679       g_object_set_data_full (G_OBJECT (context), I_("gtk-tree-view-dest-row"),
6680                               NULL, NULL);
6681       return;
6682     }
6683
6684   dr = g_slice_new (DestRow);
6685
6686   dr->dest_row = gtk_tree_row_reference_new (model, dest_row);
6687   dr->path_down_mode = path_down_mode != FALSE;
6688   dr->empty_view_drop = empty_view_drop != FALSE;
6689   dr->drop_append_mode = drop_append_mode != FALSE;
6690
6691   g_object_set_data_full (G_OBJECT (context), I_("gtk-tree-view-dest-row"),
6692                           dr, (GDestroyNotify) dest_row_free);
6693 }
6694
6695 static GtkTreePath*
6696 get_dest_row (GdkDragContext *context,
6697               gboolean       *path_down_mode)
6698 {
6699   DestRow *dr =
6700     g_object_get_data (G_OBJECT (context), "gtk-tree-view-dest-row");
6701
6702   if (dr)
6703     {
6704       GtkTreePath *path = NULL;
6705
6706       if (path_down_mode)
6707         *path_down_mode = dr->path_down_mode;
6708
6709       if (dr->dest_row)
6710         path = gtk_tree_row_reference_get_path (dr->dest_row);
6711       else if (dr->empty_view_drop)
6712         path = gtk_tree_path_new_from_indices (0, -1);
6713       else
6714         path = NULL;
6715
6716       if (path && dr->drop_append_mode)
6717         gtk_tree_path_next (path);
6718
6719       return path;
6720     }
6721   else
6722     return NULL;
6723 }
6724
6725 /* Get/set whether drag_motion requested the drag data and
6726  * drag_data_received should thus not actually insert the data,
6727  * since the data doesn't result from a drop.
6728  */
6729 static void
6730 set_status_pending (GdkDragContext *context,
6731                     GdkDragAction   suggested_action)
6732 {
6733   g_object_set_data (G_OBJECT (context),
6734                      I_("gtk-tree-view-status-pending"),
6735                      GINT_TO_POINTER (suggested_action));
6736 }
6737
6738 static GdkDragAction
6739 get_status_pending (GdkDragContext *context)
6740 {
6741   return GPOINTER_TO_INT (g_object_get_data (G_OBJECT (context),
6742                                              "gtk-tree-view-status-pending"));
6743 }
6744
6745 static TreeViewDragInfo*
6746 get_info (GtkTreeView *tree_view)
6747 {
6748   return g_object_get_data (G_OBJECT (tree_view), "gtk-tree-view-drag-info");
6749 }
6750
6751 static void
6752 destroy_info (TreeViewDragInfo *di)
6753 {
6754   g_slice_free (TreeViewDragInfo, di);
6755 }
6756
6757 static TreeViewDragInfo*
6758 ensure_info (GtkTreeView *tree_view)
6759 {
6760   TreeViewDragInfo *di;
6761
6762   di = get_info (tree_view);
6763
6764   if (di == NULL)
6765     {
6766       di = g_slice_new0 (TreeViewDragInfo);
6767
6768       g_object_set_data_full (G_OBJECT (tree_view),
6769                               I_("gtk-tree-view-drag-info"),
6770                               di,
6771                               (GDestroyNotify) destroy_info);
6772     }
6773
6774   return di;
6775 }
6776
6777 static void
6778 remove_info (GtkTreeView *tree_view)
6779 {
6780   g_object_set_data (G_OBJECT (tree_view), I_("gtk-tree-view-drag-info"), NULL);
6781 }
6782
6783 #if 0
6784 static gint
6785 drag_scan_timeout (gpointer data)
6786 {
6787   GtkTreeView *tree_view;
6788   gint x, y;
6789   GdkModifierType state;
6790   GtkTreePath *path = NULL;
6791   GtkTreeViewColumn *column = NULL;
6792   GdkRectangle visible_rect;
6793
6794   GDK_THREADS_ENTER ();
6795
6796   tree_view = GTK_TREE_VIEW (data);
6797
6798   gdk_window_get_pointer (tree_view->priv->bin_window,
6799                           &x, &y, &state);
6800
6801   gtk_tree_view_get_visible_rect (tree_view, &visible_rect);
6802
6803   /* See if we are near the edge. */
6804   if ((x - visible_rect.x) < SCROLL_EDGE_SIZE ||
6805       (visible_rect.x + visible_rect.width - x) < SCROLL_EDGE_SIZE ||
6806       (y - visible_rect.y) < SCROLL_EDGE_SIZE ||
6807       (visible_rect.y + visible_rect.height - y) < SCROLL_EDGE_SIZE)
6808     {
6809       gtk_tree_view_get_path_at_pos (tree_view,
6810                                      tree_view->priv->bin_window,
6811                                      x, y,
6812                                      &path,
6813                                      &column,
6814                                      NULL,
6815                                      NULL);
6816
6817       if (path != NULL)
6818         {
6819           gtk_tree_view_scroll_to_cell (tree_view,
6820                                         path,
6821                                         column,
6822                                         TRUE,
6823                                         0.5, 0.5);
6824
6825           gtk_tree_path_free (path);
6826         }
6827     }
6828
6829   GDK_THREADS_LEAVE ();
6830
6831   return TRUE;
6832 }
6833 #endif /* 0 */
6834
6835 static void
6836 add_scroll_timeout (GtkTreeView *tree_view)
6837 {
6838   if (tree_view->priv->scroll_timeout == 0)
6839     {
6840       tree_view->priv->scroll_timeout =
6841         gdk_threads_add_timeout (150, scroll_row_timeout, tree_view);
6842     }
6843 }
6844
6845 static void
6846 remove_scroll_timeout (GtkTreeView *tree_view)
6847 {
6848   if (tree_view->priv->scroll_timeout != 0)
6849     {
6850       g_source_remove (tree_view->priv->scroll_timeout);
6851       tree_view->priv->scroll_timeout = 0;
6852     }
6853 }
6854
6855 static gboolean
6856 check_model_dnd (GtkTreeModel *model,
6857                  GType         required_iface,
6858                  const gchar  *signal)
6859 {
6860   if (model == NULL || !G_TYPE_CHECK_INSTANCE_TYPE ((model), required_iface))
6861     {
6862       g_warning ("You must override the default '%s' handler "
6863                  "on GtkTreeView when using models that don't support "
6864                  "the %s interface and enabling drag-and-drop. The simplest way to do this "
6865                  "is to connect to '%s' and call "
6866                  "g_signal_stop_emission_by_name() in your signal handler to prevent "
6867                  "the default handler from running. Look at the source code "
6868                  "for the default handler in gtktreeview.c to get an idea what "
6869                  "your handler should do. (gtktreeview.c is in the GTK source "
6870                  "code.) If you're using GTK from a language other than C, "
6871                  "there may be a more natural way to override default handlers, e.g. via derivation.",
6872                  signal, g_type_name (required_iface), signal);
6873       return FALSE;
6874     }
6875   else
6876     return TRUE;
6877 }
6878
6879 static void
6880 remove_open_timeout (GtkTreeView *tree_view)
6881 {
6882   if (tree_view->priv->open_dest_timeout != 0)
6883     {
6884       g_source_remove (tree_view->priv->open_dest_timeout);
6885       tree_view->priv->open_dest_timeout = 0;
6886     }
6887 }
6888
6889
6890 static gint
6891 open_row_timeout (gpointer data)
6892 {
6893   GtkTreeView *tree_view = data;
6894   GtkTreePath *dest_path = NULL;
6895   GtkTreeViewDropPosition pos;
6896   gboolean result = FALSE;
6897
6898   gtk_tree_view_get_drag_dest_row (tree_view,
6899                                    &dest_path,
6900                                    &pos);
6901
6902   if (dest_path &&
6903       (pos == GTK_TREE_VIEW_DROP_INTO_OR_AFTER ||
6904        pos == GTK_TREE_VIEW_DROP_INTO_OR_BEFORE))
6905     {
6906       gtk_tree_view_expand_row (tree_view, dest_path, FALSE);
6907       tree_view->priv->open_dest_timeout = 0;
6908
6909       gtk_tree_path_free (dest_path);
6910     }
6911   else
6912     {
6913       if (dest_path)
6914         gtk_tree_path_free (dest_path);
6915
6916       result = TRUE;
6917     }
6918
6919   return result;
6920 }
6921
6922 static gboolean
6923 scroll_row_timeout (gpointer data)
6924 {
6925   GtkTreeView *tree_view = data;
6926
6927   gtk_tree_view_vertical_autoscroll (tree_view);
6928
6929   if (tree_view->priv->rubber_band_status == RUBBER_BAND_ACTIVE)
6930     gtk_tree_view_update_rubber_band (tree_view);
6931
6932   return TRUE;
6933 }
6934
6935 /* Returns TRUE if event should not be propagated to parent widgets */
6936 static gboolean
6937 set_destination_row (GtkTreeView    *tree_view,
6938                      GdkDragContext *context,
6939                      /* coordinates relative to the widget */
6940                      gint            x,
6941                      gint            y,
6942                      GdkDragAction  *suggested_action,
6943                      GdkAtom        *target)
6944 {
6945   GtkTreePath *path = NULL;
6946   GtkTreeViewDropPosition pos;
6947   GtkTreeViewDropPosition old_pos;
6948   TreeViewDragInfo *di;
6949   GtkWidget *widget;
6950   GtkTreePath *old_dest_path = NULL;
6951   gboolean can_drop = FALSE;
6952
6953   *suggested_action = 0;
6954   *target = GDK_NONE;
6955
6956   widget = GTK_WIDGET (tree_view);
6957
6958   di = get_info (tree_view);
6959
6960   if (di == NULL || y - TREE_VIEW_HEADER_HEIGHT (tree_view) < 0)
6961     {
6962       /* someone unset us as a drag dest, note that if
6963        * we return FALSE drag_leave isn't called
6964        */
6965
6966       gtk_tree_view_set_drag_dest_row (tree_view,
6967                                        NULL,
6968                                        GTK_TREE_VIEW_DROP_BEFORE);
6969
6970       remove_scroll_timeout (GTK_TREE_VIEW (widget));
6971       remove_open_timeout (GTK_TREE_VIEW (widget));
6972
6973       return FALSE; /* no longer a drop site */
6974     }
6975
6976   *target = gtk_drag_dest_find_target (widget, context,
6977                                        gtk_drag_dest_get_target_list (widget));
6978   if (*target == GDK_NONE)
6979     {
6980       return FALSE;
6981     }
6982
6983   if (!gtk_tree_view_get_dest_row_at_pos (tree_view,
6984                                           x, y,
6985                                           &path,
6986                                           &pos))
6987     {
6988       gint n_children;
6989       GtkTreeModel *model;
6990
6991       remove_open_timeout (tree_view);
6992
6993       /* the row got dropped on empty space, let's setup a special case
6994        */
6995
6996       if (path)
6997         gtk_tree_path_free (path);
6998
6999       model = gtk_tree_view_get_model (tree_view);
7000
7001       n_children = gtk_tree_model_iter_n_children (model, NULL);
7002       if (n_children)
7003         {
7004           pos = GTK_TREE_VIEW_DROP_AFTER;
7005           path = gtk_tree_path_new_from_indices (n_children - 1, -1);
7006         }
7007       else
7008         {
7009           pos = GTK_TREE_VIEW_DROP_BEFORE;
7010           path = gtk_tree_path_new_from_indices (0, -1);
7011         }
7012
7013       can_drop = TRUE;
7014
7015       goto out;
7016     }
7017
7018   g_assert (path);
7019
7020   /* If we left the current row's "open" zone, unset the timeout for
7021    * opening the row
7022    */
7023   gtk_tree_view_get_drag_dest_row (tree_view,
7024                                    &old_dest_path,
7025                                    &old_pos);
7026
7027   if (old_dest_path &&
7028       (gtk_tree_path_compare (path, old_dest_path) != 0 ||
7029        !(pos == GTK_TREE_VIEW_DROP_INTO_OR_AFTER ||
7030          pos == GTK_TREE_VIEW_DROP_INTO_OR_BEFORE)))
7031     remove_open_timeout (tree_view);
7032
7033   if (old_dest_path)
7034     gtk_tree_path_free (old_dest_path);
7035
7036   if (TRUE /* FIXME if the location droppable predicate */)
7037     {
7038       can_drop = TRUE;
7039     }
7040
7041 out:
7042   if (can_drop)
7043     {
7044       GtkWidget *source_widget;
7045
7046       *suggested_action = context->suggested_action;
7047       source_widget = gtk_drag_get_source_widget (context);
7048
7049       if (source_widget == widget)
7050         {
7051           /* Default to MOVE, unless the user has
7052            * pressed ctrl or shift to affect available actions
7053            */
7054           if ((context->actions & GDK_ACTION_MOVE) != 0)
7055             *suggested_action = GDK_ACTION_MOVE;
7056         }
7057
7058       gtk_tree_view_set_drag_dest_row (GTK_TREE_VIEW (widget),
7059                                        path, pos);
7060     }
7061   else
7062     {
7063       /* can't drop here */
7064       remove_open_timeout (tree_view);
7065
7066       gtk_tree_view_set_drag_dest_row (GTK_TREE_VIEW (widget),
7067                                        NULL,
7068                                        GTK_TREE_VIEW_DROP_BEFORE);
7069     }
7070
7071   if (path)
7072     gtk_tree_path_free (path);
7073
7074   return TRUE;
7075 }
7076
7077 static GtkTreePath*
7078 get_logical_dest_row (GtkTreeView *tree_view,
7079                       gboolean    *path_down_mode,
7080                       gboolean    *drop_append_mode)
7081 {
7082   /* adjust path to point to the row the drop goes in front of */
7083   GtkTreePath *path = NULL;
7084   GtkTreeViewDropPosition pos;
7085
7086   g_return_val_if_fail (path_down_mode != NULL, NULL);
7087   g_return_val_if_fail (drop_append_mode != NULL, NULL);
7088
7089   *path_down_mode = FALSE;
7090   *drop_append_mode = 0;
7091
7092   gtk_tree_view_get_drag_dest_row (tree_view, &path, &pos);
7093
7094   if (path == NULL)
7095     return NULL;
7096
7097   if (pos == GTK_TREE_VIEW_DROP_BEFORE)
7098     ; /* do nothing */
7099   else if (pos == GTK_TREE_VIEW_DROP_INTO_OR_BEFORE ||
7100            pos == GTK_TREE_VIEW_DROP_INTO_OR_AFTER)
7101     *path_down_mode = TRUE;
7102   else
7103     {
7104       GtkTreeIter iter;
7105       GtkTreeModel *model = gtk_tree_view_get_model (tree_view);
7106
7107       g_assert (pos == GTK_TREE_VIEW_DROP_AFTER);
7108
7109       if (!gtk_tree_model_get_iter (model, &iter, path) ||
7110           !gtk_tree_model_iter_next (model, &iter))
7111         *drop_append_mode = 1;
7112       else
7113         {
7114           *drop_append_mode = 0;
7115           gtk_tree_path_next (path);
7116         }
7117     }
7118
7119   return path;
7120 }
7121
7122 static gboolean
7123 gtk_tree_view_maybe_begin_dragging_row (GtkTreeView      *tree_view,
7124                                         GdkEventMotion   *event)
7125 {
7126   GtkWidget *widget = GTK_WIDGET (tree_view);
7127   GdkDragContext *context;
7128   TreeViewDragInfo *di;
7129   GtkTreePath *path = NULL;
7130   gint button;
7131   gint cell_x, cell_y;
7132   GtkTreeModel *model;
7133   gboolean retval = FALSE;
7134
7135   di = get_info (tree_view);
7136
7137   if (di == NULL || !di->source_set)
7138     goto out;
7139
7140   if (tree_view->priv->pressed_button < 0)
7141     goto out;
7142
7143   if (!gtk_drag_check_threshold (widget,
7144                                  tree_view->priv->press_start_x,
7145                                  tree_view->priv->press_start_y,
7146                                  event->x, event->y))
7147     goto out;
7148
7149   model = gtk_tree_view_get_model (tree_view);
7150
7151   if (model == NULL)
7152     goto out;
7153
7154   button = tree_view->priv->pressed_button;
7155   tree_view->priv->pressed_button = -1;
7156
7157   gtk_tree_view_get_path_at_pos (tree_view,
7158                                  tree_view->priv->press_start_x,
7159                                  tree_view->priv->press_start_y,
7160                                  &path,
7161                                  NULL,
7162                                  &cell_x,
7163                                  &cell_y);
7164
7165   if (path == NULL)
7166     goto out;
7167
7168   if (!GTK_IS_TREE_DRAG_SOURCE (model) ||
7169       !gtk_tree_drag_source_row_draggable (GTK_TREE_DRAG_SOURCE (model),
7170                                            path))
7171     goto out;
7172
7173   if (!(GDK_BUTTON1_MASK << (button - 1) & di->start_button_mask))
7174     goto out;
7175
7176   /* Now we can begin the drag */
7177
7178   retval = TRUE;
7179
7180   context = gtk_drag_begin (widget,
7181                             gtk_drag_source_get_target_list (widget),
7182                             di->source_actions,
7183                             button,
7184                             (GdkEvent*)event);
7185
7186   set_source_row (context, model, path);
7187
7188  out:
7189   if (path)
7190     gtk_tree_path_free (path);
7191
7192   return retval;
7193 }
7194
7195
7196 static void
7197 gtk_tree_view_drag_begin (GtkWidget      *widget,
7198                           GdkDragContext *context)
7199 {
7200   GtkTreeView *tree_view;
7201   GtkTreePath *path = NULL;
7202   gint cell_x, cell_y;
7203   cairo_surface_t *row_pix;
7204   TreeViewDragInfo *di;
7205
7206   tree_view = GTK_TREE_VIEW (widget);
7207
7208   /* if the user uses a custom DND source impl, we don't set the icon here */
7209   di = get_info (tree_view);
7210
7211   if (di == NULL || !di->source_set)
7212     return;
7213
7214   gtk_tree_view_get_path_at_pos (tree_view,
7215                                  tree_view->priv->press_start_x,
7216                                  tree_view->priv->press_start_y,
7217                                  &path,
7218                                  NULL,
7219                                  &cell_x,
7220                                  &cell_y);
7221
7222   g_return_if_fail (path != NULL);
7223
7224   row_pix = gtk_tree_view_create_row_drag_icon (tree_view,
7225                                                 path);
7226   cairo_surface_set_device_offset (row_pix,
7227                                    /* the + 1 is for the black border in the icon */
7228                                    - (tree_view->priv->press_start_x + 1),
7229                                    - (cell_y + 1));
7230
7231   gtk_drag_set_icon_surface (context, row_pix);
7232
7233   cairo_surface_destroy (row_pix);
7234   gtk_tree_path_free (path);
7235 }
7236
7237 static void
7238 gtk_tree_view_drag_end (GtkWidget      *widget,
7239                         GdkDragContext *context)
7240 {
7241   /* do nothing */
7242 }
7243
7244 /* Default signal implementations for the drag signals */
7245 static void
7246 gtk_tree_view_drag_data_get (GtkWidget        *widget,
7247                              GdkDragContext   *context,
7248                              GtkSelectionData *selection_data,
7249                              guint             info,
7250                              guint             time)
7251 {
7252   GtkTreeView *tree_view;
7253   GtkTreeModel *model;
7254   TreeViewDragInfo *di;
7255   GtkTreePath *source_row;
7256
7257   tree_view = GTK_TREE_VIEW (widget);
7258
7259   model = gtk_tree_view_get_model (tree_view);
7260
7261   if (model == NULL)
7262     return;
7263
7264   di = get_info (GTK_TREE_VIEW (widget));
7265
7266   if (di == NULL)
7267     return;
7268
7269   source_row = get_source_row (context);
7270
7271   if (source_row == NULL)
7272     return;
7273
7274   /* We can implement the GTK_TREE_MODEL_ROW target generically for
7275    * any model; for DragSource models there are some other targets
7276    * we also support.
7277    */
7278
7279   if (GTK_IS_TREE_DRAG_SOURCE (model) &&
7280       gtk_tree_drag_source_drag_data_get (GTK_TREE_DRAG_SOURCE (model),
7281                                           source_row,
7282                                           selection_data))
7283     goto done;
7284
7285   /* If drag_data_get does nothing, try providing row data. */
7286   if (selection_data->target == gdk_atom_intern_static_string ("GTK_TREE_MODEL_ROW"))
7287     {
7288       gtk_tree_set_row_drag_data (selection_data,
7289                                   model,
7290                                   source_row);
7291     }
7292
7293  done:
7294   gtk_tree_path_free (source_row);
7295 }
7296
7297
7298 static void
7299 gtk_tree_view_drag_data_delete (GtkWidget      *widget,
7300                                 GdkDragContext *context)
7301 {
7302   TreeViewDragInfo *di;
7303   GtkTreeModel *model;
7304   GtkTreeView *tree_view;
7305   GtkTreePath *source_row;
7306
7307   tree_view = GTK_TREE_VIEW (widget);
7308   model = gtk_tree_view_get_model (tree_view);
7309
7310   if (!check_model_dnd (model, GTK_TYPE_TREE_DRAG_SOURCE, "drag_data_delete"))
7311     return;
7312
7313   di = get_info (tree_view);
7314
7315   if (di == NULL)
7316     return;
7317
7318   source_row = get_source_row (context);
7319
7320   if (source_row == NULL)
7321     return;
7322
7323   gtk_tree_drag_source_drag_data_delete (GTK_TREE_DRAG_SOURCE (model),
7324                                          source_row);
7325
7326   gtk_tree_path_free (source_row);
7327
7328   set_source_row (context, NULL, NULL);
7329 }
7330
7331 static void
7332 gtk_tree_view_drag_leave (GtkWidget      *widget,
7333                           GdkDragContext *context,
7334                           guint             time)
7335 {
7336   /* unset any highlight row */
7337   gtk_tree_view_set_drag_dest_row (GTK_TREE_VIEW (widget),
7338                                    NULL,
7339                                    GTK_TREE_VIEW_DROP_BEFORE);
7340
7341   remove_scroll_timeout (GTK_TREE_VIEW (widget));
7342   remove_open_timeout (GTK_TREE_VIEW (widget));
7343 }
7344
7345
7346 static gboolean
7347 gtk_tree_view_drag_motion (GtkWidget        *widget,
7348                            GdkDragContext   *context,
7349                            /* coordinates relative to the widget */
7350                            gint              x,
7351                            gint              y,
7352                            guint             time)
7353 {
7354   gboolean empty;
7355   GtkTreePath *path = NULL;
7356   GtkTreeViewDropPosition pos;
7357   GtkTreeView *tree_view;
7358   GdkDragAction suggested_action = 0;
7359   GdkAtom target;
7360
7361   tree_view = GTK_TREE_VIEW (widget);
7362
7363   if (!set_destination_row (tree_view, context, x, y, &suggested_action, &target))
7364     return FALSE;
7365
7366   gtk_tree_view_get_drag_dest_row (tree_view, &path, &pos);
7367
7368   /* we only know this *after* set_desination_row */
7369   empty = tree_view->priv->empty_view_drop;
7370
7371   if (path == NULL && !empty)
7372     {
7373       /* Can't drop here. */
7374       gdk_drag_status (context, 0, time);
7375     }
7376   else
7377     {
7378       if (tree_view->priv->open_dest_timeout == 0 &&
7379           (pos == GTK_TREE_VIEW_DROP_INTO_OR_AFTER ||
7380            pos == GTK_TREE_VIEW_DROP_INTO_OR_BEFORE))
7381         {
7382           tree_view->priv->open_dest_timeout =
7383             gdk_threads_add_timeout (AUTO_EXPAND_TIMEOUT, open_row_timeout, tree_view);
7384         }
7385       else
7386         {
7387           add_scroll_timeout (tree_view);
7388         }
7389
7390       if (target == gdk_atom_intern_static_string ("GTK_TREE_MODEL_ROW"))
7391         {
7392           /* Request data so we can use the source row when
7393            * determining whether to accept the drop
7394            */
7395           set_status_pending (context, suggested_action);
7396           gtk_drag_get_data (widget, context, target, time);
7397         }
7398       else
7399         {
7400           set_status_pending (context, 0);
7401           gdk_drag_status (context, suggested_action, time);
7402         }
7403     }
7404
7405   if (path)
7406     gtk_tree_path_free (path);
7407
7408   return TRUE;
7409 }
7410
7411
7412 static gboolean
7413 gtk_tree_view_drag_drop (GtkWidget        *widget,
7414                          GdkDragContext   *context,
7415                          /* coordinates relative to the widget */
7416                          gint              x,
7417                          gint              y,
7418                          guint             time)
7419 {
7420   GtkTreeView *tree_view;
7421   GtkTreePath *path;
7422   GdkDragAction suggested_action = 0;
7423   GdkAtom target = GDK_NONE;
7424   TreeViewDragInfo *di;
7425   GtkTreeModel *model;
7426   gboolean path_down_mode;
7427   gboolean drop_append_mode;
7428
7429   tree_view = GTK_TREE_VIEW (widget);
7430
7431   model = gtk_tree_view_get_model (tree_view);
7432
7433   remove_scroll_timeout (GTK_TREE_VIEW (widget));
7434   remove_open_timeout (GTK_TREE_VIEW (widget));
7435
7436   di = get_info (tree_view);
7437
7438   if (di == NULL)
7439     return FALSE;
7440
7441   if (!check_model_dnd (model, GTK_TYPE_TREE_DRAG_DEST, "drag_drop"))
7442     return FALSE;
7443
7444   if (!set_destination_row (tree_view, context, x, y, &suggested_action, &target))
7445     return FALSE;
7446
7447   path = get_logical_dest_row (tree_view, &path_down_mode, &drop_append_mode);
7448
7449   if (target != GDK_NONE && path != NULL)
7450     {
7451       /* in case a motion had requested drag data, change things so we
7452        * treat drag data receives as a drop.
7453        */
7454       set_status_pending (context, 0);
7455       set_dest_row (context, model, path,
7456                     path_down_mode, tree_view->priv->empty_view_drop,
7457                     drop_append_mode);
7458     }
7459
7460   if (path)
7461     gtk_tree_path_free (path);
7462
7463   /* Unset this thing */
7464   gtk_tree_view_set_drag_dest_row (GTK_TREE_VIEW (widget),
7465                                    NULL,
7466                                    GTK_TREE_VIEW_DROP_BEFORE);
7467
7468   if (target != GDK_NONE)
7469     {
7470       gtk_drag_get_data (widget, context, target, time);
7471       return TRUE;
7472     }
7473   else
7474     return FALSE;
7475 }
7476
7477 static void
7478 gtk_tree_view_drag_data_received (GtkWidget        *widget,
7479                                   GdkDragContext   *context,
7480                                   /* coordinates relative to the widget */
7481                                   gint              x,
7482                                   gint              y,
7483                                   GtkSelectionData *selection_data,
7484                                   guint             info,
7485                                   guint             time)
7486 {
7487   GtkTreePath *path;
7488   TreeViewDragInfo *di;
7489   gboolean accepted = FALSE;
7490   GtkTreeModel *model;
7491   GtkTreeView *tree_view;
7492   GtkTreePath *dest_row;
7493   GdkDragAction suggested_action;
7494   gboolean path_down_mode;
7495   gboolean drop_append_mode;
7496
7497   tree_view = GTK_TREE_VIEW (widget);
7498
7499   model = gtk_tree_view_get_model (tree_view);
7500
7501   if (!check_model_dnd (model, GTK_TYPE_TREE_DRAG_DEST, "drag_data_received"))
7502     return;
7503
7504   di = get_info (tree_view);
7505
7506   if (di == NULL)
7507     return;
7508
7509   suggested_action = get_status_pending (context);
7510
7511   if (suggested_action)
7512     {
7513       /* We are getting this data due to a request in drag_motion,
7514        * rather than due to a request in drag_drop, so we are just
7515        * supposed to call drag_status, not actually paste in the
7516        * data.
7517        */
7518       path = get_logical_dest_row (tree_view, &path_down_mode,
7519                                    &drop_append_mode);
7520
7521       if (path == NULL)
7522         suggested_action = 0;
7523       else if (path_down_mode)
7524         gtk_tree_path_down (path);
7525
7526       if (suggested_action)
7527         {
7528           if (!gtk_tree_drag_dest_row_drop_possible (GTK_TREE_DRAG_DEST (model),
7529                                                      path,
7530                                                      selection_data))
7531             {
7532               if (path_down_mode)
7533                 {
7534                   path_down_mode = FALSE;
7535                   gtk_tree_path_up (path);
7536
7537                   if (!gtk_tree_drag_dest_row_drop_possible (GTK_TREE_DRAG_DEST (model),
7538                                                              path,
7539                                                              selection_data))
7540                     suggested_action = 0;
7541                 }
7542               else
7543                 suggested_action = 0;
7544             }
7545         }
7546
7547       gdk_drag_status (context, suggested_action, time);
7548
7549       if (path)
7550         gtk_tree_path_free (path);
7551
7552       /* If you can't drop, remove user drop indicator until the next motion */
7553       if (suggested_action == 0)
7554         gtk_tree_view_set_drag_dest_row (GTK_TREE_VIEW (widget),
7555                                          NULL,
7556                                          GTK_TREE_VIEW_DROP_BEFORE);
7557
7558       return;
7559     }
7560
7561   dest_row = get_dest_row (context, &path_down_mode);
7562
7563   if (dest_row == NULL)
7564     return;
7565
7566   if (selection_data->length >= 0)
7567     {
7568       if (path_down_mode)
7569         {
7570           gtk_tree_path_down (dest_row);
7571           if (!gtk_tree_drag_dest_row_drop_possible (GTK_TREE_DRAG_DEST (model),
7572                                                      dest_row, selection_data))
7573             gtk_tree_path_up (dest_row);
7574         }
7575     }
7576
7577   if (selection_data->length >= 0)
7578     {
7579       if (gtk_tree_drag_dest_drag_data_received (GTK_TREE_DRAG_DEST (model),
7580                                                  dest_row,
7581                                                  selection_data))
7582         accepted = TRUE;
7583     }
7584
7585   gtk_drag_finish (context,
7586                    accepted,
7587                    (context->action == GDK_ACTION_MOVE),
7588                    time);
7589
7590   if (gtk_tree_path_get_depth (dest_row) == 1
7591       && gtk_tree_path_get_indices (dest_row)[0] == 0)
7592     {
7593       /* special special case drag to "0", scroll to first item */
7594       if (!tree_view->priv->scroll_to_path)
7595         gtk_tree_view_scroll_to_cell (tree_view, dest_row, NULL, FALSE, 0.0, 0.0);
7596     }
7597
7598   gtk_tree_path_free (dest_row);
7599
7600   /* drop dest_row */
7601   set_dest_row (context, NULL, NULL, FALSE, FALSE, FALSE);
7602 }
7603
7604
7605
7606 /* GtkContainer Methods
7607  */
7608
7609
7610 static void
7611 gtk_tree_view_remove (GtkContainer *container,
7612                       GtkWidget    *widget)
7613 {
7614   GtkTreeView *tree_view = GTK_TREE_VIEW (container);
7615   GtkTreeViewChild *child = NULL;
7616   GList *tmp_list;
7617
7618   tmp_list = tree_view->priv->children;
7619   while (tmp_list)
7620     {
7621       child = tmp_list->data;
7622       if (child->widget == widget)
7623         {
7624           gtk_widget_unparent (widget);
7625
7626           tree_view->priv->children = g_list_remove_link (tree_view->priv->children, tmp_list);
7627           g_list_free_1 (tmp_list);
7628           g_slice_free (GtkTreeViewChild, child);
7629           return;
7630         }
7631
7632       tmp_list = tmp_list->next;
7633     }
7634
7635   tmp_list = tree_view->priv->columns;
7636
7637   while (tmp_list)
7638     {
7639       GtkTreeViewColumn *column;
7640       column = tmp_list->data;
7641       if (column->button == widget)
7642         {
7643           gtk_widget_unparent (widget);
7644           return;
7645         }
7646       tmp_list = tmp_list->next;
7647     }
7648 }
7649
7650 static void
7651 gtk_tree_view_forall (GtkContainer *container,
7652                       gboolean      include_internals,
7653                       GtkCallback   callback,
7654                       gpointer      callback_data)
7655 {
7656   GtkTreeView *tree_view = GTK_TREE_VIEW (container);
7657   GtkTreeViewChild *child = NULL;
7658   GtkTreeViewColumn *column;
7659   GList *tmp_list;
7660
7661   tmp_list = tree_view->priv->children;
7662   while (tmp_list)
7663     {
7664       child = tmp_list->data;
7665       tmp_list = tmp_list->next;
7666
7667       (* callback) (child->widget, callback_data);
7668     }
7669   if (include_internals == FALSE)
7670     return;
7671
7672   for (tmp_list = tree_view->priv->columns; tmp_list; tmp_list = tmp_list->next)
7673     {
7674       column = tmp_list->data;
7675
7676       if (column->button)
7677         (* callback) (column->button, callback_data);
7678     }
7679 }
7680
7681 /* Returns TRUE if the treeview contains no "special" (editable or activatable)
7682  * cells. If so we draw one big row-spanning focus rectangle.
7683  */
7684 static gboolean
7685 gtk_tree_view_has_special_cell (GtkTreeView *tree_view)
7686 {
7687   GList *list;
7688
7689   for (list = tree_view->priv->columns; list; list = list->next)
7690     {
7691       if (!((GtkTreeViewColumn *)list->data)->visible)
7692         continue;
7693       if (_gtk_tree_view_column_count_special_cells (list->data))
7694         return TRUE;
7695     }
7696
7697   return FALSE;
7698 }
7699
7700 static void
7701 column_sizing_notify (GObject    *object,
7702                       GParamSpec *pspec,
7703                       gpointer    data)
7704 {
7705   GtkTreeViewColumn *c = GTK_TREE_VIEW_COLUMN (object);
7706
7707   if (gtk_tree_view_column_get_sizing (c) != GTK_TREE_VIEW_COLUMN_FIXED)
7708     /* disable fixed height mode */
7709     g_object_set (data, "fixed-height-mode", FALSE, NULL);
7710 }
7711
7712 /**
7713  * gtk_tree_view_set_fixed_height_mode:
7714  * @tree_view: a #GtkTreeView
7715  * @enable: %TRUE to enable fixed height mode
7716  *
7717  * Enables or disables the fixed height mode of @tree_view.
7718  * Fixed height mode speeds up #GtkTreeView by assuming that all
7719  * rows have the same height.
7720  * Only enable this option if all rows are the same height and all
7721  * columns are of type %GTK_TREE_VIEW_COLUMN_FIXED.
7722  *
7723  * Since: 2.6
7724  **/
7725 void
7726 gtk_tree_view_set_fixed_height_mode (GtkTreeView *tree_view,
7727                                      gboolean     enable)
7728 {
7729   GList *l;
7730
7731   enable = enable != FALSE;
7732
7733   if (enable == tree_view->priv->fixed_height_mode)
7734     return;
7735
7736   if (!enable)
7737     {
7738       tree_view->priv->fixed_height_mode = 0;
7739       tree_view->priv->fixed_height = -1;
7740
7741       /* force a revalidation */
7742       install_presize_handler (tree_view);
7743     }
7744   else
7745     {
7746       /* make sure all columns are of type FIXED */
7747       for (l = tree_view->priv->columns; l; l = l->next)
7748         {
7749           GtkTreeViewColumn *c = l->data;
7750
7751           g_return_if_fail (gtk_tree_view_column_get_sizing (c) == GTK_TREE_VIEW_COLUMN_FIXED);
7752         }
7753
7754       /* yes, we really have to do this is in a separate loop */
7755       for (l = tree_view->priv->columns; l; l = l->next)
7756         g_signal_connect (l->data, "notify::sizing",
7757                           G_CALLBACK (column_sizing_notify), tree_view);
7758
7759       tree_view->priv->fixed_height_mode = 1;
7760       tree_view->priv->fixed_height = -1;
7761
7762       if (tree_view->priv->tree)
7763         initialize_fixed_height_mode (tree_view);
7764     }
7765
7766   g_object_notify (G_OBJECT (tree_view), "fixed-height-mode");
7767 }
7768
7769 /**
7770  * gtk_tree_view_get_fixed_height_mode:
7771  * @tree_view: a #GtkTreeView
7772  *
7773  * Returns whether fixed height mode is turned on for @tree_view.
7774  *
7775  * Return value: %TRUE if @tree_view is in fixed height mode
7776  *
7777  * Since: 2.6
7778  **/
7779 gboolean
7780 gtk_tree_view_get_fixed_height_mode (GtkTreeView *tree_view)
7781 {
7782   return tree_view->priv->fixed_height_mode;
7783 }
7784
7785 /* Returns TRUE if the focus is within the headers, after the focus operation is
7786  * done
7787  */
7788 static gboolean
7789 gtk_tree_view_header_focus (GtkTreeView      *tree_view,
7790                             GtkDirectionType  dir,
7791                             gboolean          clamp_column_visible)
7792 {
7793   GtkWidget *focus_child;
7794
7795   GList *last_column, *first_column;
7796   GList *tmp_list;
7797   gboolean rtl;
7798
7799   if (! GTK_TREE_VIEW_FLAG_SET (tree_view, GTK_TREE_VIEW_HEADERS_VISIBLE))
7800     return FALSE;
7801
7802   focus_child = gtk_container_get_focus_child (GTK_CONTAINER (tree_view));
7803
7804   first_column = tree_view->priv->columns;
7805   while (first_column)
7806     {
7807       if (gtk_widget_get_can_focus (GTK_TREE_VIEW_COLUMN (first_column->data)->button) &&
7808           GTK_TREE_VIEW_COLUMN (first_column->data)->visible &&
7809           (GTK_TREE_VIEW_COLUMN (first_column->data)->clickable ||
7810            GTK_TREE_VIEW_COLUMN (first_column->data)->reorderable))
7811         break;
7812       first_column = first_column->next;
7813     }
7814
7815   /* No headers are visible, or are focusable.  We can't focus in or out.
7816    */
7817   if (first_column == NULL)
7818     return FALSE;
7819
7820   last_column = g_list_last (tree_view->priv->columns);
7821   while (last_column)
7822     {
7823       if (gtk_widget_get_can_focus (GTK_TREE_VIEW_COLUMN (last_column->data)->button) &&
7824           GTK_TREE_VIEW_COLUMN (last_column->data)->visible &&
7825           (GTK_TREE_VIEW_COLUMN (last_column->data)->clickable ||
7826            GTK_TREE_VIEW_COLUMN (last_column->data)->reorderable))
7827         break;
7828       last_column = last_column->prev;
7829     }
7830
7831
7832   rtl = (gtk_widget_get_direction (GTK_WIDGET (tree_view)) == GTK_TEXT_DIR_RTL);
7833
7834   switch (dir)
7835     {
7836     case GTK_DIR_TAB_BACKWARD:
7837     case GTK_DIR_TAB_FORWARD:
7838     case GTK_DIR_UP:
7839     case GTK_DIR_DOWN:
7840       if (focus_child == NULL)
7841         {
7842           if (tree_view->priv->focus_column != NULL &&
7843               gtk_widget_get_can_focus (tree_view->priv->focus_column->button))
7844             focus_child = tree_view->priv->focus_column->button;
7845           else
7846             focus_child = GTK_TREE_VIEW_COLUMN (first_column->data)->button;
7847           gtk_widget_grab_focus (focus_child);
7848           break;
7849         }
7850       return FALSE;
7851
7852     case GTK_DIR_LEFT:
7853     case GTK_DIR_RIGHT:
7854       if (focus_child == NULL)
7855         {
7856           if (tree_view->priv->focus_column != NULL)
7857             focus_child = tree_view->priv->focus_column->button;
7858           else if (dir == GTK_DIR_LEFT)
7859             focus_child = GTK_TREE_VIEW_COLUMN (last_column->data)->button;
7860           else
7861             focus_child = GTK_TREE_VIEW_COLUMN (first_column->data)->button;
7862           gtk_widget_grab_focus (focus_child);
7863           break;
7864         }
7865
7866       if (gtk_widget_child_focus (focus_child, dir))
7867         {
7868           /* The focus moves inside the button. */
7869           /* This is probably a great example of bad UI */
7870           break;
7871         }
7872
7873       /* We need to move the focus among the row of buttons. */
7874       for (tmp_list = tree_view->priv->columns; tmp_list; tmp_list = tmp_list->next)
7875         if (GTK_TREE_VIEW_COLUMN (tmp_list->data)->button == focus_child)
7876           break;
7877
7878       if ((tmp_list == first_column && dir == (rtl ? GTK_DIR_RIGHT : GTK_DIR_LEFT))
7879           || (tmp_list == last_column && dir == (rtl ? GTK_DIR_LEFT : GTK_DIR_RIGHT)))
7880         {
7881           gtk_widget_error_bell (GTK_WIDGET (tree_view));
7882           break;
7883         }
7884
7885       while (tmp_list)
7886         {
7887           GtkTreeViewColumn *column;
7888
7889           if (dir == (rtl ? GTK_DIR_LEFT : GTK_DIR_RIGHT))
7890             tmp_list = tmp_list->next;
7891           else
7892             tmp_list = tmp_list->prev;
7893
7894           if (tmp_list == NULL)
7895             {
7896               g_warning ("Internal button not found");
7897               break;
7898             }
7899           column = tmp_list->data;
7900           if (column->button &&
7901               column->visible &&
7902               gtk_widget_get_can_focus (column->button))
7903             {
7904               focus_child = column->button;
7905               gtk_widget_grab_focus (column->button);
7906               break;
7907             }
7908         }
7909       break;
7910     default:
7911       g_assert_not_reached ();
7912       break;
7913     }
7914
7915   /* if focus child is non-null, we assume it's been set to the current focus child
7916    */
7917   if (focus_child)
7918     {
7919       for (tmp_list = tree_view->priv->columns; tmp_list; tmp_list = tmp_list->next)
7920         if (GTK_TREE_VIEW_COLUMN (tmp_list->data)->button == focus_child)
7921           {
7922             tree_view->priv->focus_column = GTK_TREE_VIEW_COLUMN (tmp_list->data);
7923             break;
7924           }
7925
7926       if (clamp_column_visible)
7927         {
7928           gtk_tree_view_clamp_column_visible (tree_view,
7929                                               tree_view->priv->focus_column,
7930                                               FALSE);
7931         }
7932     }
7933
7934   return (focus_child != NULL);
7935 }
7936
7937 /* This function returns in 'path' the first focusable path, if the given path
7938  * is already focusable, it's the returned one.
7939  */
7940 static gboolean
7941 search_first_focusable_path (GtkTreeView  *tree_view,
7942                              GtkTreePath **path,
7943                              gboolean      search_forward,
7944                              GtkRBTree   **new_tree,
7945                              GtkRBNode   **new_node)
7946 {
7947   GtkRBTree *tree = NULL;
7948   GtkRBNode *node = NULL;
7949
7950   if (!path || !*path)
7951     return FALSE;
7952
7953   _gtk_tree_view_find_node (tree_view, *path, &tree, &node);
7954
7955   if (!tree || !node)
7956     return FALSE;
7957
7958   while (node && row_is_separator (tree_view, NULL, *path))
7959     {
7960       if (search_forward)
7961         _gtk_rbtree_next_full (tree, node, &tree, &node);
7962       else
7963         _gtk_rbtree_prev_full (tree, node, &tree, &node);
7964
7965       if (*path)
7966         gtk_tree_path_free (*path);
7967
7968       if (node)
7969         *path = _gtk_tree_view_find_path (tree_view, tree, node);
7970       else
7971         *path = NULL;
7972     }
7973
7974   if (new_tree)
7975     *new_tree = tree;
7976
7977   if (new_node)
7978     *new_node = node;
7979
7980   return (*path != NULL);
7981 }
7982
7983 static gint
7984 gtk_tree_view_focus (GtkWidget        *widget,
7985                      GtkDirectionType  direction)
7986 {
7987   GtkTreeView *tree_view = GTK_TREE_VIEW (widget);
7988   GtkContainer *container = GTK_CONTAINER (widget);
7989   GtkWidget *focus_child;
7990
7991   if (!gtk_widget_is_sensitive (widget) || !gtk_widget_get_can_focus (widget))
7992     return FALSE;
7993
7994   focus_child = gtk_container_get_focus_child (container);
7995
7996   gtk_tree_view_stop_editing (GTK_TREE_VIEW (widget), FALSE);
7997   /* Case 1.  Headers currently have focus. */
7998   if (focus_child)
7999     {
8000       switch (direction)
8001         {
8002         case GTK_DIR_LEFT:
8003         case GTK_DIR_RIGHT:
8004           gtk_tree_view_header_focus (tree_view, direction, TRUE);
8005           return TRUE;
8006         case GTK_DIR_TAB_BACKWARD:
8007         case GTK_DIR_UP:
8008           return FALSE;
8009         case GTK_DIR_TAB_FORWARD:
8010         case GTK_DIR_DOWN:
8011           gtk_widget_grab_focus (widget);
8012           return TRUE;
8013         default:
8014           g_assert_not_reached ();
8015           return FALSE;
8016         }
8017     }
8018
8019   /* Case 2. We don't have focus at all. */
8020   if (!gtk_widget_has_focus (widget))
8021     {
8022       if (!gtk_tree_view_header_focus (tree_view, direction, FALSE))
8023         gtk_widget_grab_focus (widget);
8024       return TRUE;
8025     }
8026
8027   /* Case 3. We have focus already. */
8028   if (direction == GTK_DIR_TAB_BACKWARD)
8029     return (gtk_tree_view_header_focus (tree_view, direction, FALSE));
8030   else if (direction == GTK_DIR_TAB_FORWARD)
8031     return FALSE;
8032
8033   /* Other directions caught by the keybindings */
8034   gtk_widget_grab_focus (widget);
8035   return TRUE;
8036 }
8037
8038 static void
8039 gtk_tree_view_grab_focus (GtkWidget *widget)
8040 {
8041   GTK_WIDGET_CLASS (gtk_tree_view_parent_class)->grab_focus (widget);
8042
8043   gtk_tree_view_focus_to_cursor (GTK_TREE_VIEW (widget));
8044 }
8045
8046 static void
8047 gtk_tree_view_style_set (GtkWidget *widget,
8048                          GtkStyle *previous_style)
8049 {
8050   GtkTreeView *tree_view = GTK_TREE_VIEW (widget);
8051   GtkStyle *style;
8052   GList *list;
8053   GtkTreeViewColumn *column;
8054
8055   if (gtk_widget_get_realized (widget))
8056     {
8057       style = gtk_widget_get_style (widget);
8058       gdk_window_set_background (tree_view->priv->bin_window,
8059                                  &style->base[gtk_widget_get_state (widget)]);
8060       gtk_style_set_background (style, tree_view->priv->header_window, GTK_STATE_NORMAL);
8061
8062       gtk_tree_view_set_grid_lines (tree_view, tree_view->priv->grid_lines);
8063       gtk_tree_view_set_enable_tree_lines (tree_view, tree_view->priv->tree_lines_enabled);
8064     }
8065
8066   gtk_widget_style_get (widget,
8067                         "expander-size", &tree_view->priv->expander_size,
8068                         NULL);
8069   tree_view->priv->expander_size += EXPANDER_EXTRA_PADDING;
8070
8071   for (list = tree_view->priv->columns; list; list = list->next)
8072     {
8073       column = list->data;
8074       _gtk_tree_view_column_cell_set_dirty (column, TRUE);
8075     }
8076
8077   tree_view->priv->fixed_height = -1;
8078   _gtk_rbtree_mark_invalid (tree_view->priv->tree);
8079
8080   gtk_widget_queue_resize (widget);
8081 }
8082
8083
8084 static void
8085 gtk_tree_view_set_focus_child (GtkContainer *container,
8086                                GtkWidget    *child)
8087 {
8088   GtkTreeView *tree_view = GTK_TREE_VIEW (container);
8089   GList *list;
8090
8091   for (list = tree_view->priv->columns; list; list = list->next)
8092     {
8093       if (GTK_TREE_VIEW_COLUMN (list->data)->button == child)
8094         {
8095           tree_view->priv->focus_column = GTK_TREE_VIEW_COLUMN (list->data);
8096           break;
8097         }
8098     }
8099
8100   GTK_CONTAINER_CLASS (gtk_tree_view_parent_class)->set_focus_child (container, child);
8101 }
8102
8103 static void
8104 gtk_tree_view_set_adjustments (GtkTreeView   *tree_view,
8105                                GtkAdjustment *hadj,
8106                                GtkAdjustment *vadj)
8107 {
8108   gboolean need_adjust = FALSE;
8109
8110   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
8111
8112   if (hadj)
8113     g_return_if_fail (GTK_IS_ADJUSTMENT (hadj));
8114   else
8115     hadj = GTK_ADJUSTMENT (gtk_adjustment_new (0.0, 0.0, 0.0, 0.0, 0.0, 0.0));
8116   if (vadj)
8117     g_return_if_fail (GTK_IS_ADJUSTMENT (vadj));
8118   else
8119     vadj = GTK_ADJUSTMENT (gtk_adjustment_new (0.0, 0.0, 0.0, 0.0, 0.0, 0.0));
8120
8121   if (tree_view->priv->hadjustment && (tree_view->priv->hadjustment != hadj))
8122     {
8123       g_signal_handlers_disconnect_by_func (tree_view->priv->hadjustment,
8124                                             gtk_tree_view_adjustment_changed,
8125                                             tree_view);
8126       g_object_unref (tree_view->priv->hadjustment);
8127     }
8128
8129   if (tree_view->priv->vadjustment && (tree_view->priv->vadjustment != vadj))
8130     {
8131       g_signal_handlers_disconnect_by_func (tree_view->priv->vadjustment,
8132                                             gtk_tree_view_adjustment_changed,
8133                                             tree_view);
8134       g_object_unref (tree_view->priv->vadjustment);
8135     }
8136
8137   if (tree_view->priv->hadjustment != hadj)
8138     {
8139       tree_view->priv->hadjustment = hadj;
8140       g_object_ref_sink (tree_view->priv->hadjustment);
8141
8142       g_signal_connect (tree_view->priv->hadjustment, "value-changed",
8143                         G_CALLBACK (gtk_tree_view_adjustment_changed),
8144                         tree_view);
8145       need_adjust = TRUE;
8146     }
8147
8148   if (tree_view->priv->vadjustment != vadj)
8149     {
8150       tree_view->priv->vadjustment = vadj;
8151       g_object_ref_sink (tree_view->priv->vadjustment);
8152
8153       g_signal_connect (tree_view->priv->vadjustment, "value-changed",
8154                         G_CALLBACK (gtk_tree_view_adjustment_changed),
8155                         tree_view);
8156       need_adjust = TRUE;
8157     }
8158
8159   if (need_adjust)
8160     gtk_tree_view_adjustment_changed (NULL, tree_view);
8161 }
8162
8163
8164 static gboolean
8165 gtk_tree_view_real_move_cursor (GtkTreeView       *tree_view,
8166                                 GtkMovementStep    step,
8167                                 gint               count)
8168 {
8169   GdkModifierType state;
8170
8171   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), FALSE);
8172   g_return_val_if_fail (step == GTK_MOVEMENT_LOGICAL_POSITIONS ||
8173                         step == GTK_MOVEMENT_VISUAL_POSITIONS ||
8174                         step == GTK_MOVEMENT_DISPLAY_LINES ||
8175                         step == GTK_MOVEMENT_PAGES ||
8176                         step == GTK_MOVEMENT_BUFFER_ENDS, FALSE);
8177
8178   if (tree_view->priv->tree == NULL)
8179     return FALSE;
8180   if (!gtk_widget_has_focus (GTK_WIDGET (tree_view)))
8181     return FALSE;
8182
8183   gtk_tree_view_stop_editing (tree_view, FALSE);
8184   GTK_TREE_VIEW_SET_FLAG (tree_view, GTK_TREE_VIEW_DRAW_KEYFOCUS);
8185   gtk_widget_grab_focus (GTK_WIDGET (tree_view));
8186
8187   if (gtk_get_current_event_state (&state))
8188     {
8189       if ((state & GDK_CONTROL_MASK) == GDK_CONTROL_MASK)
8190         tree_view->priv->ctrl_pressed = TRUE;
8191       if ((state & GDK_SHIFT_MASK) == GDK_SHIFT_MASK)
8192         tree_view->priv->shift_pressed = TRUE;
8193     }
8194   /* else we assume not pressed */
8195
8196   switch (step)
8197     {
8198       /* currently we make no distinction.  When we go bi-di, we need to */
8199     case GTK_MOVEMENT_LOGICAL_POSITIONS:
8200     case GTK_MOVEMENT_VISUAL_POSITIONS:
8201       gtk_tree_view_move_cursor_left_right (tree_view, count);
8202       break;
8203     case GTK_MOVEMENT_DISPLAY_LINES:
8204       gtk_tree_view_move_cursor_up_down (tree_view, count);
8205       break;
8206     case GTK_MOVEMENT_PAGES:
8207       gtk_tree_view_move_cursor_page_up_down (tree_view, count);
8208       break;
8209     case GTK_MOVEMENT_BUFFER_ENDS:
8210       gtk_tree_view_move_cursor_start_end (tree_view, count);
8211       break;
8212     default:
8213       g_assert_not_reached ();
8214     }
8215
8216   tree_view->priv->ctrl_pressed = FALSE;
8217   tree_view->priv->shift_pressed = FALSE;
8218
8219   return TRUE;
8220 }
8221
8222 static void
8223 gtk_tree_view_put (GtkTreeView *tree_view,
8224                    GtkWidget   *child_widget,
8225                    /* in bin_window coordinates */
8226                    gint         x,
8227                    gint         y,
8228                    gint         width,
8229                    gint         height)
8230 {
8231   GtkTreeViewChild *child;
8232
8233   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
8234   g_return_if_fail (GTK_IS_WIDGET (child_widget));
8235
8236   child = g_slice_new (GtkTreeViewChild);
8237
8238   child->widget = child_widget;
8239   child->x = x;
8240   child->y = y;
8241   child->width = width;
8242   child->height = height;
8243
8244   tree_view->priv->children = g_list_append (tree_view->priv->children, child);
8245
8246   if (gtk_widget_get_realized (GTK_WIDGET (tree_view)))
8247     gtk_widget_set_parent_window (child->widget, tree_view->priv->bin_window);
8248
8249   gtk_widget_set_parent (child_widget, GTK_WIDGET (tree_view));
8250 }
8251
8252 void
8253 _gtk_tree_view_child_move_resize (GtkTreeView *tree_view,
8254                                   GtkWidget   *widget,
8255                                   /* in tree coordinates */
8256                                   gint         x,
8257                                   gint         y,
8258                                   gint         width,
8259                                   gint         height)
8260 {
8261   GtkTreeViewChild *child = NULL;
8262   GList *list;
8263   GdkRectangle allocation;
8264
8265   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
8266   g_return_if_fail (GTK_IS_WIDGET (widget));
8267
8268   for (list = tree_view->priv->children; list; list = list->next)
8269     {
8270       if (((GtkTreeViewChild *)list->data)->widget == widget)
8271         {
8272           child = list->data;
8273           break;
8274         }
8275     }
8276   if (child == NULL)
8277     return;
8278
8279   allocation.x = child->x = x;
8280   allocation.y = child->y = y;
8281   allocation.width = child->width = width;
8282   allocation.height = child->height = height;
8283
8284   if (gtk_widget_get_realized (widget))
8285     gtk_widget_size_allocate (widget, &allocation);
8286 }
8287
8288
8289 /* TreeModel Callbacks
8290  */
8291
8292 static void
8293 gtk_tree_view_row_changed (GtkTreeModel *model,
8294                            GtkTreePath  *path,
8295                            GtkTreeIter  *iter,
8296                            gpointer      data)
8297 {
8298   GtkTreeView *tree_view = (GtkTreeView *)data;
8299   GtkRBTree *tree;
8300   GtkRBNode *node;
8301   gboolean free_path = FALSE;
8302   GList *list;
8303   GtkTreePath *cursor_path;
8304
8305   g_return_if_fail (path != NULL || iter != NULL);
8306
8307   if (tree_view->priv->cursor != NULL)
8308     cursor_path = gtk_tree_row_reference_get_path (tree_view->priv->cursor);
8309   else
8310     cursor_path = NULL;
8311
8312   if (tree_view->priv->edited_column &&
8313       (cursor_path == NULL || gtk_tree_path_compare (cursor_path, path) == 0))
8314     gtk_tree_view_stop_editing (tree_view, TRUE);
8315
8316   if (cursor_path != NULL)
8317     gtk_tree_path_free (cursor_path);
8318
8319   if (path == NULL)
8320     {
8321       path = gtk_tree_model_get_path (model, iter);
8322       free_path = TRUE;
8323     }
8324   else if (iter == NULL)
8325     gtk_tree_model_get_iter (model, iter, path);
8326
8327   if (_gtk_tree_view_find_node (tree_view,
8328                                 path,
8329                                 &tree,
8330                                 &node))
8331     /* We aren't actually showing the node */
8332     goto done;
8333
8334   if (tree == NULL)
8335     goto done;
8336
8337   if (tree_view->priv->fixed_height_mode
8338       && tree_view->priv->fixed_height >= 0)
8339     {
8340       _gtk_rbtree_node_set_height (tree, node, tree_view->priv->fixed_height);
8341       if (gtk_widget_get_realized (GTK_WIDGET (tree_view)))
8342         gtk_tree_view_node_queue_redraw (tree_view, tree, node);
8343     }
8344   else
8345     {
8346       _gtk_rbtree_node_mark_invalid (tree, node);
8347       for (list = tree_view->priv->columns; list; list = list->next)
8348         {
8349           GtkTreeViewColumn *column;
8350
8351           column = list->data;
8352           if (! column->visible)
8353             continue;
8354
8355           if (column->column_type == GTK_TREE_VIEW_COLUMN_AUTOSIZE)
8356             {
8357               _gtk_tree_view_column_cell_set_dirty (column, TRUE);
8358             }
8359         }
8360     }
8361
8362  done:
8363   if (!tree_view->priv->fixed_height_mode &&
8364       gtk_widget_get_realized (GTK_WIDGET (tree_view)))
8365     install_presize_handler (tree_view);
8366   if (free_path)
8367     gtk_tree_path_free (path);
8368 }
8369
8370 static void
8371 gtk_tree_view_row_inserted (GtkTreeModel *model,
8372                             GtkTreePath  *path,
8373                             GtkTreeIter  *iter,
8374                             gpointer      data)
8375 {
8376   GtkTreeView *tree_view = (GtkTreeView *) data;
8377   gint *indices;
8378   GtkRBTree *tmptree, *tree;
8379   GtkRBNode *tmpnode = NULL;
8380   gint depth;
8381   gint i = 0;
8382   gint height;
8383   gboolean free_path = FALSE;
8384   gboolean node_visible = TRUE;
8385
8386   g_return_if_fail (path != NULL || iter != NULL);
8387
8388   if (tree_view->priv->fixed_height_mode
8389       && tree_view->priv->fixed_height >= 0)
8390     height = tree_view->priv->fixed_height;
8391   else
8392     height = 0;
8393
8394   if (path == NULL)
8395     {
8396       path = gtk_tree_model_get_path (model, iter);
8397       free_path = TRUE;
8398     }
8399   else if (iter == NULL)
8400     gtk_tree_model_get_iter (model, iter, path);
8401
8402   if (tree_view->priv->tree == NULL)
8403     tree_view->priv->tree = _gtk_rbtree_new ();
8404
8405   tmptree = tree = tree_view->priv->tree;
8406
8407   /* Update all row-references */
8408   gtk_tree_row_reference_inserted (G_OBJECT (data), path);
8409   depth = gtk_tree_path_get_depth (path);
8410   indices = gtk_tree_path_get_indices (path);
8411
8412   /* First, find the parent tree */
8413   while (i < depth - 1)
8414     {
8415       if (tmptree == NULL)
8416         {
8417           /* We aren't showing the node */
8418           node_visible = FALSE;
8419           goto done;
8420         }
8421
8422       tmpnode = _gtk_rbtree_find_count (tmptree, indices[i] + 1);
8423       if (tmpnode == NULL)
8424         {
8425           g_warning ("A node was inserted with a parent that's not in the tree.\n" \
8426                      "This possibly means that a GtkTreeModel inserted a child node\n" \
8427                      "before the parent was inserted.");
8428           goto done;
8429         }
8430       else if (!GTK_RBNODE_FLAG_SET (tmpnode, GTK_RBNODE_IS_PARENT))
8431         {
8432           /* FIXME enforce correct behavior on model, probably */
8433           /* In theory, the model should have emitted has_child_toggled here.  We
8434            * try to catch it anyway, just to be safe, in case the model hasn't.
8435            */
8436           GtkTreePath *tmppath = _gtk_tree_view_find_path (tree_view,
8437                                                            tree,
8438                                                            tmpnode);
8439           gtk_tree_view_row_has_child_toggled (model, tmppath, NULL, data);
8440           gtk_tree_path_free (tmppath);
8441           goto done;
8442         }
8443
8444       tmptree = tmpnode->children;
8445       tree = tmptree;
8446       i++;
8447     }
8448
8449   if (tree == NULL)
8450     {
8451       node_visible = FALSE;
8452       goto done;
8453     }
8454
8455   /* ref the node */
8456   gtk_tree_model_ref_node (tree_view->priv->model, iter);
8457   if (indices[depth - 1] == 0)
8458     {
8459       tmpnode = _gtk_rbtree_find_count (tree, 1);
8460       tmpnode = _gtk_rbtree_insert_before (tree, tmpnode, height, FALSE);
8461     }
8462   else
8463     {
8464       tmpnode = _gtk_rbtree_find_count (tree, indices[depth - 1]);
8465       tmpnode = _gtk_rbtree_insert_after (tree, tmpnode, height, FALSE);
8466     }
8467
8468  done:
8469   if (height > 0)
8470     {
8471       if (tree)
8472         _gtk_rbtree_node_mark_valid (tree, tmpnode);
8473
8474       if (node_visible && node_is_visible (tree_view, tree, tmpnode))
8475         gtk_widget_queue_resize (GTK_WIDGET (tree_view));
8476       else
8477         gtk_widget_queue_resize_no_redraw (GTK_WIDGET (tree_view));
8478     }
8479   else
8480     install_presize_handler (tree_view);
8481   if (free_path)
8482     gtk_tree_path_free (path);
8483 }
8484
8485 static void
8486 gtk_tree_view_row_has_child_toggled (GtkTreeModel *model,
8487                                      GtkTreePath  *path,
8488                                      GtkTreeIter  *iter,
8489                                      gpointer      data)
8490 {
8491   GtkTreeView *tree_view = (GtkTreeView *)data;
8492   GtkTreeIter real_iter;
8493   gboolean has_child;
8494   GtkRBTree *tree;
8495   GtkRBNode *node;
8496   gboolean free_path = FALSE;
8497
8498   g_return_if_fail (path != NULL || iter != NULL);
8499
8500   if (iter)
8501     real_iter = *iter;
8502
8503   if (path == NULL)
8504     {
8505       path = gtk_tree_model_get_path (model, iter);
8506       free_path = TRUE;
8507     }
8508   else if (iter == NULL)
8509     gtk_tree_model_get_iter (model, &real_iter, path);
8510
8511   if (_gtk_tree_view_find_node (tree_view,
8512                                 path,
8513                                 &tree,
8514                                 &node))
8515     /* We aren't actually showing the node */
8516     goto done;
8517
8518   if (tree == NULL)
8519     goto done;
8520
8521   has_child = gtk_tree_model_iter_has_child (model, &real_iter);
8522   /* Sanity check.
8523    */
8524   if (GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_PARENT) == has_child)
8525     goto done;
8526
8527   if (has_child)
8528     GTK_RBNODE_SET_FLAG (node, GTK_RBNODE_IS_PARENT);
8529   else
8530     GTK_RBNODE_UNSET_FLAG (node, GTK_RBNODE_IS_PARENT);
8531
8532   if (has_child && GTK_TREE_VIEW_FLAG_SET (tree_view, GTK_TREE_VIEW_IS_LIST))
8533     {
8534       GTK_TREE_VIEW_UNSET_FLAG (tree_view, GTK_TREE_VIEW_IS_LIST);
8535       if (GTK_TREE_VIEW_FLAG_SET (tree_view, GTK_TREE_VIEW_SHOW_EXPANDERS))
8536         {
8537           GList *list;
8538
8539           for (list = tree_view->priv->columns; list; list = list->next)
8540             if (GTK_TREE_VIEW_COLUMN (list->data)->visible)
8541               {
8542                 GTK_TREE_VIEW_COLUMN (list->data)->dirty = TRUE;
8543                 _gtk_tree_view_column_cell_set_dirty (GTK_TREE_VIEW_COLUMN (list->data), TRUE);
8544                 break;
8545               }
8546         }
8547       gtk_widget_queue_resize (GTK_WIDGET (tree_view));
8548     }
8549   else
8550     {
8551       _gtk_tree_view_queue_draw_node (tree_view, tree, node, NULL);
8552     }
8553
8554  done:
8555   if (free_path)
8556     gtk_tree_path_free (path);
8557 }
8558
8559 static void
8560 count_children_helper (GtkRBTree *tree,
8561                        GtkRBNode *node,
8562                        gpointer   data)
8563 {
8564   if (node->children)
8565     _gtk_rbtree_traverse (node->children, node->children->root, G_POST_ORDER, count_children_helper, data);
8566   (*((gint *)data))++;
8567 }
8568
8569 static void
8570 check_selection_helper (GtkRBTree *tree,
8571                         GtkRBNode *node,
8572                         gpointer   data)
8573 {
8574   gint *value = (gint *)data;
8575
8576   *value = GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_SELECTED);
8577
8578   if (node->children && !*value)
8579     _gtk_rbtree_traverse (node->children, node->children->root, G_POST_ORDER, check_selection_helper, data);
8580 }
8581
8582 static void
8583 gtk_tree_view_row_deleted (GtkTreeModel *model,
8584                            GtkTreePath  *path,
8585                            gpointer      data)
8586 {
8587   GtkTreeView *tree_view = (GtkTreeView *)data;
8588   GtkRBTree *tree;
8589   GtkRBNode *node;
8590   GList *list;
8591   gint selection_changed = FALSE;
8592
8593   g_return_if_fail (path != NULL);
8594
8595   gtk_tree_row_reference_deleted (G_OBJECT (data), path);
8596
8597   if (_gtk_tree_view_find_node (tree_view, path, &tree, &node))
8598     return;
8599
8600   if (tree == NULL)
8601     return;
8602
8603   /* check if the selection has been changed */
8604   _gtk_rbtree_traverse (tree, node, G_POST_ORDER,
8605                         check_selection_helper, &selection_changed);
8606
8607   for (list = tree_view->priv->columns; list; list = list->next)
8608     if (((GtkTreeViewColumn *)list->data)->visible &&
8609         ((GtkTreeViewColumn *)list->data)->column_type == GTK_TREE_VIEW_COLUMN_AUTOSIZE)
8610       _gtk_tree_view_column_cell_set_dirty ((GtkTreeViewColumn *)list->data, TRUE);
8611
8612   /* Ensure we don't have a dangling pointer to a dead node */
8613   ensure_unprelighted (tree_view);
8614
8615   /* Cancel editting if we've started */
8616   gtk_tree_view_stop_editing (tree_view, TRUE);
8617
8618   /* If we have a node expanded/collapsed timeout, remove it */
8619   remove_expand_collapse_timeout (tree_view);
8620
8621   if (tree_view->priv->destroy_count_func)
8622     {
8623       gint child_count = 0;
8624       if (node->children)
8625         _gtk_rbtree_traverse (node->children, node->children->root, G_POST_ORDER, count_children_helper, &child_count);
8626       tree_view->priv->destroy_count_func (tree_view, path, child_count, tree_view->priv->destroy_count_data);
8627     }
8628
8629   if (tree->root->count == 1)
8630     {
8631       if (tree_view->priv->tree == tree)
8632         tree_view->priv->tree = NULL;
8633
8634       _gtk_rbtree_remove (tree);
8635     }
8636   else
8637     {
8638       _gtk_rbtree_remove_node (tree, node);
8639     }
8640
8641   if (! gtk_tree_row_reference_valid (tree_view->priv->top_row))
8642     {
8643       gtk_tree_row_reference_free (tree_view->priv->top_row);
8644       tree_view->priv->top_row = NULL;
8645     }
8646
8647   install_scroll_sync_handler (tree_view);
8648
8649   gtk_widget_queue_resize (GTK_WIDGET (tree_view));
8650
8651   if (selection_changed)
8652     g_signal_emit_by_name (tree_view->priv->selection, "changed");
8653 }
8654
8655 static void
8656 gtk_tree_view_rows_reordered (GtkTreeModel *model,
8657                               GtkTreePath  *parent,
8658                               GtkTreeIter  *iter,
8659                               gint         *new_order,
8660                               gpointer      data)
8661 {
8662   GtkTreeView *tree_view = GTK_TREE_VIEW (data);
8663   GtkRBTree *tree;
8664   GtkRBNode *node;
8665   gint len;
8666
8667   len = gtk_tree_model_iter_n_children (model, iter);
8668
8669   if (len < 2)
8670     return;
8671
8672   gtk_tree_row_reference_reordered (G_OBJECT (data),
8673                                     parent,
8674                                     iter,
8675                                     new_order);
8676
8677   if (_gtk_tree_view_find_node (tree_view,
8678                                 parent,
8679                                 &tree,
8680                                 &node))
8681     return;
8682
8683   /* We need to special case the parent path */
8684   if (tree == NULL)
8685     tree = tree_view->priv->tree;
8686   else
8687     tree = node->children;
8688
8689   if (tree == NULL)
8690     return;
8691
8692   if (tree_view->priv->edited_column)
8693     gtk_tree_view_stop_editing (tree_view, TRUE);
8694
8695   /* we need to be unprelighted */
8696   ensure_unprelighted (tree_view);
8697
8698   /* clear the timeout */
8699   cancel_arrow_animation (tree_view);
8700
8701   _gtk_rbtree_reorder (tree, new_order, len);
8702
8703   gtk_widget_queue_draw (GTK_WIDGET (tree_view));
8704
8705   gtk_tree_view_dy_to_top_row (tree_view);
8706 }
8707
8708
8709 /* Internal tree functions
8710  */
8711
8712
8713 static void
8714 gtk_tree_view_get_background_xrange (GtkTreeView       *tree_view,
8715                                      GtkRBTree         *tree,
8716                                      GtkTreeViewColumn *column,
8717                                      gint              *x1,
8718                                      gint              *x2)
8719 {
8720   GtkTreeViewColumn *tmp_column = NULL;
8721   gint total_width;
8722   GList *list;
8723   gboolean rtl;
8724
8725   if (x1)
8726     *x1 = 0;
8727
8728   if (x2)
8729     *x2 = 0;
8730
8731   rtl = (gtk_widget_get_direction (GTK_WIDGET (tree_view)) == GTK_TEXT_DIR_RTL);
8732
8733   total_width = 0;
8734   for (list = (rtl ? g_list_last (tree_view->priv->columns) : g_list_first (tree_view->priv->columns));
8735        list;
8736        list = (rtl ? list->prev : list->next))
8737     {
8738       tmp_column = list->data;
8739
8740       if (tmp_column == column)
8741         break;
8742
8743       if (tmp_column->visible)
8744         total_width += tmp_column->width;
8745     }
8746
8747   if (tmp_column != column)
8748     {
8749       g_warning (G_STRLOC": passed-in column isn't in the tree");
8750       return;
8751     }
8752
8753   if (x1)
8754     *x1 = total_width;
8755
8756   if (x2)
8757     {
8758       if (column->visible)
8759         *x2 = total_width + column->width;
8760       else
8761         *x2 = total_width; /* width of 0 */
8762     }
8763 }
8764 static void
8765 gtk_tree_view_get_arrow_xrange (GtkTreeView *tree_view,
8766                                 GtkRBTree   *tree,
8767                                 gint        *x1,
8768                                 gint        *x2)
8769 {
8770   gint x_offset = 0;
8771   GList *list;
8772   GtkTreeViewColumn *tmp_column = NULL;
8773   gint total_width;
8774   gboolean indent_expanders;
8775   gboolean rtl;
8776
8777   rtl = (gtk_widget_get_direction (GTK_WIDGET (tree_view)) == GTK_TEXT_DIR_RTL);
8778
8779   total_width = 0;
8780   for (list = (rtl ? g_list_last (tree_view->priv->columns) : g_list_first (tree_view->priv->columns));
8781        list;
8782        list = (rtl ? list->prev : list->next))
8783     {
8784       tmp_column = list->data;
8785
8786       if (gtk_tree_view_is_expander_column (tree_view, tmp_column))
8787         {
8788           if (rtl)
8789             x_offset = total_width + tmp_column->width - tree_view->priv->expander_size;
8790           else
8791             x_offset = total_width;
8792           break;
8793         }
8794
8795       if (tmp_column->visible)
8796         total_width += tmp_column->width;
8797     }
8798
8799   gtk_widget_style_get (GTK_WIDGET (tree_view),
8800                         "indent-expanders", &indent_expanders,
8801                         NULL);
8802
8803   if (indent_expanders)
8804     {
8805       if (rtl)
8806         x_offset -= tree_view->priv->expander_size * _gtk_rbtree_get_depth (tree);
8807       else
8808         x_offset += tree_view->priv->expander_size * _gtk_rbtree_get_depth (tree);
8809     }
8810
8811   *x1 = x_offset;
8812
8813   if (tmp_column && tmp_column->visible)
8814     /* +1 because x2 isn't included in the range. */
8815     *x2 = *x1 + tree_view->priv->expander_size + 1;
8816   else
8817     *x2 = *x1;
8818 }
8819
8820 static void
8821 gtk_tree_view_build_tree (GtkTreeView *tree_view,
8822                           GtkRBTree   *tree,
8823                           GtkTreeIter *iter,
8824                           gint         depth,
8825                           gboolean     recurse)
8826 {
8827   GtkRBNode *temp = NULL;
8828   GtkTreePath *path = NULL;
8829   gboolean is_list = GTK_TREE_VIEW_FLAG_SET (tree_view, GTK_TREE_VIEW_IS_LIST);
8830
8831   do
8832     {
8833       gtk_tree_model_ref_node (tree_view->priv->model, iter);
8834       temp = _gtk_rbtree_insert_after (tree, temp, 0, FALSE);
8835
8836       if (tree_view->priv->fixed_height > 0)
8837         {
8838           if (GTK_RBNODE_FLAG_SET (temp, GTK_RBNODE_INVALID))
8839             {
8840               _gtk_rbtree_node_set_height (tree, temp, tree_view->priv->fixed_height);
8841               _gtk_rbtree_node_mark_valid (tree, temp);
8842             }
8843         }
8844
8845       if (is_list)
8846         continue;
8847
8848       if (recurse)
8849         {
8850           GtkTreeIter child;
8851
8852           if (!path)
8853             path = gtk_tree_model_get_path (tree_view->priv->model, iter);
8854           else
8855             gtk_tree_path_next (path);
8856
8857           if (gtk_tree_model_iter_children (tree_view->priv->model, &child, iter))
8858             {
8859               gboolean expand;
8860
8861               g_signal_emit (tree_view, tree_view_signals[TEST_EXPAND_ROW], 0, iter, path, &expand);
8862
8863               if (gtk_tree_model_iter_has_child (tree_view->priv->model, iter)
8864                   && !expand)
8865                 {
8866                   temp->children = _gtk_rbtree_new ();
8867                   temp->children->parent_tree = tree;
8868                   temp->children->parent_node = temp;
8869                   gtk_tree_view_build_tree (tree_view, temp->children, &child, depth + 1, recurse);
8870                 }
8871             }
8872         }
8873
8874       if (gtk_tree_model_iter_has_child (tree_view->priv->model, iter))
8875         {
8876           if ((temp->flags&GTK_RBNODE_IS_PARENT) != GTK_RBNODE_IS_PARENT)
8877             temp->flags ^= GTK_RBNODE_IS_PARENT;
8878         }
8879     }
8880   while (gtk_tree_model_iter_next (tree_view->priv->model, iter));
8881
8882   if (path)
8883     gtk_tree_path_free (path);
8884 }
8885
8886 /* Make sure the node is visible vertically */
8887 static void
8888 gtk_tree_view_clamp_node_visible (GtkTreeView *tree_view,
8889                                   GtkRBTree   *tree,
8890                                   GtkRBNode   *node)
8891 {
8892   gint node_dy, height;
8893   GtkTreePath *path = NULL;
8894
8895   if (!gtk_widget_get_realized (GTK_WIDGET (tree_view)))
8896     return;
8897
8898   /* just return if the node is visible, avoiding a costly expose */
8899   node_dy = _gtk_rbtree_node_find_offset (tree, node);
8900   height = ROW_HEIGHT (tree_view, GTK_RBNODE_GET_HEIGHT (node));
8901   if (! GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_INVALID)
8902       && node_dy >= tree_view->priv->vadjustment->value
8903       && node_dy + height <= (tree_view->priv->vadjustment->value
8904                               + tree_view->priv->vadjustment->page_size))
8905     return;
8906
8907   path = _gtk_tree_view_find_path (tree_view, tree, node);
8908   if (path)
8909     {
8910       /* We process updates because we want to clear old selected items when we scroll.
8911        * if this is removed, we get a "selection streak" at the bottom. */
8912       gdk_window_process_updates (tree_view->priv->bin_window, TRUE);
8913       gtk_tree_view_scroll_to_cell (tree_view, path, NULL, FALSE, 0.0, 0.0);
8914       gtk_tree_path_free (path);
8915     }
8916 }
8917
8918 static void
8919 gtk_tree_view_clamp_column_visible (GtkTreeView       *tree_view,
8920                                     GtkTreeViewColumn *column,
8921                                     gboolean           focus_to_cell)
8922 {
8923   GtkAllocation allocation;
8924   gint x, width;
8925
8926   if (column == NULL)
8927     return;
8928
8929   gtk_widget_get_allocation (column->button, &allocation);
8930   x = allocation.x;
8931   width = allocation.width;
8932
8933   if (width > tree_view->priv->hadjustment->page_size)
8934     {
8935       /* The column is larger than the horizontal page size.  If the
8936        * column has cells which can be focussed individually, then we make
8937        * sure the cell which gets focus is fully visible (if even the
8938        * focus cell is bigger than the page size, we make sure the
8939        * left-hand side of the cell is visible).
8940        *
8941        * If the column does not have those so-called special cells, we
8942        * make sure the left-hand side of the column is visible.
8943        */
8944
8945       if (focus_to_cell && gtk_tree_view_has_special_cell (tree_view))
8946         {
8947           GtkTreePath *cursor_path;
8948           GdkRectangle background_area, cell_area, focus_area;
8949
8950           cursor_path = gtk_tree_row_reference_get_path (tree_view->priv->cursor);
8951
8952           gtk_tree_view_get_cell_area (tree_view,
8953                                        cursor_path, column, &cell_area);
8954           gtk_tree_view_get_background_area (tree_view,
8955                                              cursor_path, column,
8956                                              &background_area);
8957
8958           gtk_tree_path_free (cursor_path);
8959
8960           _gtk_tree_view_column_get_focus_area (column,
8961                                                 &background_area,
8962                                                 &cell_area,
8963                                                 &focus_area);
8964
8965           x = focus_area.x;
8966           width = focus_area.width;
8967
8968           if (width < tree_view->priv->hadjustment->page_size)
8969             {
8970               if ((tree_view->priv->hadjustment->value + tree_view->priv->hadjustment->page_size) < (x + width))
8971                 gtk_adjustment_set_value (tree_view->priv->hadjustment,
8972                                           x + width - tree_view->priv->hadjustment->page_size);
8973               else if (tree_view->priv->hadjustment->value > x)
8974                 gtk_adjustment_set_value (tree_view->priv->hadjustment, x);
8975             }
8976         }
8977
8978       gtk_adjustment_set_value (tree_view->priv->hadjustment, x);
8979     }
8980   else
8981     {
8982       if ((tree_view->priv->hadjustment->value + tree_view->priv->hadjustment->page_size) < (x + width))
8983           gtk_adjustment_set_value (tree_view->priv->hadjustment,
8984                                     x + width - tree_view->priv->hadjustment->page_size);
8985       else if (tree_view->priv->hadjustment->value > x)
8986         gtk_adjustment_set_value (tree_view->priv->hadjustment, x);
8987   }
8988 }
8989
8990 /* This function could be more efficient.  I'll optimize it if profiling seems
8991  * to imply that it is important */
8992 GtkTreePath *
8993 _gtk_tree_view_find_path (GtkTreeView *tree_view,
8994                           GtkRBTree   *tree,
8995                           GtkRBNode   *node)
8996 {
8997   GtkTreePath *path;
8998   GtkRBTree *tmp_tree;
8999   GtkRBNode *tmp_node, *last;
9000   gint count;
9001
9002   path = gtk_tree_path_new ();
9003
9004   g_return_val_if_fail (node != NULL, path);
9005   g_return_val_if_fail (node != tree->nil, path);
9006
9007   count = 1 + node->left->count;
9008
9009   last = node;
9010   tmp_node = node->parent;
9011   tmp_tree = tree;
9012   while (tmp_tree)
9013     {
9014       while (tmp_node != tmp_tree->nil)
9015         {
9016           if (tmp_node->right == last)
9017             count += 1 + tmp_node->left->count;
9018           last = tmp_node;
9019           tmp_node = tmp_node->parent;
9020         }
9021       gtk_tree_path_prepend_index (path, count - 1);
9022       last = tmp_tree->parent_node;
9023       tmp_tree = tmp_tree->parent_tree;
9024       if (last)
9025         {
9026           count = 1 + last->left->count;
9027           tmp_node = last->parent;
9028         }
9029     }
9030   return path;
9031 }
9032
9033 /* Returns TRUE if we ran out of tree before finding the path.  If the path is
9034  * invalid (ie. points to a node that's not in the tree), *tree and *node are
9035  * both set to NULL.
9036  */
9037 gboolean
9038 _gtk_tree_view_find_node (GtkTreeView  *tree_view,
9039                           GtkTreePath  *path,
9040                           GtkRBTree   **tree,
9041                           GtkRBNode   **node)
9042 {
9043   GtkRBNode *tmpnode = NULL;
9044   GtkRBTree *tmptree = tree_view->priv->tree;
9045   gint *indices = gtk_tree_path_get_indices (path);
9046   gint depth = gtk_tree_path_get_depth (path);
9047   gint i = 0;
9048
9049   *node = NULL;
9050   *tree = NULL;
9051
9052   if (depth == 0 || tmptree == NULL)
9053     return FALSE;
9054   do
9055     {
9056       tmpnode = _gtk_rbtree_find_count (tmptree, indices[i] + 1);
9057       ++i;
9058       if (tmpnode == NULL)
9059         {
9060           *tree = NULL;
9061           *node = NULL;
9062           return FALSE;
9063         }
9064       if (i >= depth)
9065         {
9066           *tree = tmptree;
9067           *node = tmpnode;
9068           return FALSE;
9069         }
9070       *tree = tmptree;
9071       *node = tmpnode;
9072       tmptree = tmpnode->children;
9073       if (tmptree == NULL)
9074         return TRUE;
9075     }
9076   while (1);
9077 }
9078
9079 static gboolean
9080 gtk_tree_view_is_expander_column (GtkTreeView       *tree_view,
9081                                   GtkTreeViewColumn *column)
9082 {
9083   GList *list;
9084
9085   if (GTK_TREE_VIEW_FLAG_SET (tree_view, GTK_TREE_VIEW_IS_LIST))
9086     return FALSE;
9087
9088   if (tree_view->priv->expander_column != NULL)
9089     {
9090       if (tree_view->priv->expander_column == column)
9091         return TRUE;
9092       return FALSE;
9093     }
9094   else
9095     {
9096       for (list = tree_view->priv->columns;
9097            list;
9098            list = list->next)
9099         if (((GtkTreeViewColumn *)list->data)->visible)
9100           break;
9101       if (list && list->data == column)
9102         return TRUE;
9103     }
9104   return FALSE;
9105 }
9106
9107 static void
9108 gtk_tree_view_add_move_binding (GtkBindingSet  *binding_set,
9109                                 guint           keyval,
9110                                 guint           modmask,
9111                                 gboolean        add_shifted_binding,
9112                                 GtkMovementStep step,
9113                                 gint            count)
9114 {
9115
9116   gtk_binding_entry_add_signal (binding_set, keyval, modmask,
9117                                 "move-cursor", 2,
9118                                 G_TYPE_ENUM, step,
9119                                 G_TYPE_INT, count);
9120
9121   if (add_shifted_binding)
9122     gtk_binding_entry_add_signal (binding_set, keyval, GDK_SHIFT_MASK,
9123                                   "move-cursor", 2,
9124                                   G_TYPE_ENUM, step,
9125                                   G_TYPE_INT, count);
9126
9127   if ((modmask & GDK_CONTROL_MASK) == GDK_CONTROL_MASK)
9128    return;
9129
9130   gtk_binding_entry_add_signal (binding_set, keyval, GDK_CONTROL_MASK | GDK_SHIFT_MASK,
9131                                 "move-cursor", 2,
9132                                 G_TYPE_ENUM, step,
9133                                 G_TYPE_INT, count);
9134
9135   gtk_binding_entry_add_signal (binding_set, keyval, GDK_CONTROL_MASK,
9136                                 "move-cursor", 2,
9137                                 G_TYPE_ENUM, step,
9138                                 G_TYPE_INT, count);
9139 }
9140
9141 static gint
9142 gtk_tree_view_unref_tree_helper (GtkTreeModel *model,
9143                                  GtkTreeIter  *iter,
9144                                  GtkRBTree    *tree,
9145                                  GtkRBNode    *node)
9146 {
9147   gint retval = FALSE;
9148   do
9149     {
9150       g_return_val_if_fail (node != NULL, FALSE);
9151
9152       if (node->children)
9153         {
9154           GtkTreeIter child;
9155           GtkRBTree *new_tree;
9156           GtkRBNode *new_node;
9157
9158           new_tree = node->children;
9159           new_node = new_tree->root;
9160
9161           while (new_node && new_node->left != new_tree->nil)
9162             new_node = new_node->left;
9163
9164           if (!gtk_tree_model_iter_children (model, &child, iter))
9165             return FALSE;
9166
9167           retval = retval || gtk_tree_view_unref_tree_helper (model, &child, new_tree, new_node);
9168         }
9169
9170       if (GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_SELECTED))
9171         retval = TRUE;
9172       gtk_tree_model_unref_node (model, iter);
9173       node = _gtk_rbtree_next (tree, node);
9174     }
9175   while (gtk_tree_model_iter_next (model, iter));
9176
9177   return retval;
9178 }
9179
9180 static gint
9181 gtk_tree_view_unref_and_check_selection_tree (GtkTreeView *tree_view,
9182                                               GtkRBTree   *tree)
9183 {
9184   GtkTreeIter iter;
9185   GtkTreePath *path;
9186   GtkRBNode *node;
9187   gint retval;
9188
9189   if (!tree)
9190     return FALSE;
9191
9192   node = tree->root;
9193   while (node && node->left != tree->nil)
9194     node = node->left;
9195
9196   g_return_val_if_fail (node != NULL, FALSE);
9197   path = _gtk_tree_view_find_path (tree_view, tree, node);
9198   gtk_tree_model_get_iter (GTK_TREE_MODEL (tree_view->priv->model),
9199                            &iter, path);
9200   retval = gtk_tree_view_unref_tree_helper (GTK_TREE_MODEL (tree_view->priv->model), &iter, tree, node);
9201   gtk_tree_path_free (path);
9202
9203   return retval;
9204 }
9205
9206 static void
9207 gtk_tree_view_set_column_drag_info (GtkTreeView       *tree_view,
9208                                     GtkTreeViewColumn *column)
9209 {
9210   GtkTreeViewColumn *left_column;
9211   GtkTreeViewColumn *cur_column = NULL;
9212   GtkTreeViewColumnReorder *reorder;
9213   gboolean rtl;
9214   GList *tmp_list;
9215   gint left;
9216
9217   /* We want to precalculate the motion list such that we know what column slots
9218    * are available.
9219    */
9220   left_column = NULL;
9221   rtl = (gtk_widget_get_direction (GTK_WIDGET (tree_view)) == GTK_TEXT_DIR_RTL);
9222
9223   /* First, identify all possible drop spots */
9224   if (rtl)
9225     tmp_list = g_list_last (tree_view->priv->columns);
9226   else
9227     tmp_list = g_list_first (tree_view->priv->columns);
9228
9229   while (tmp_list)
9230     {
9231       cur_column = GTK_TREE_VIEW_COLUMN (tmp_list->data);
9232       tmp_list = rtl?g_list_previous (tmp_list):g_list_next (tmp_list);
9233
9234       if (cur_column->visible == FALSE)
9235         continue;
9236
9237       /* If it's not the column moving and func tells us to skip over the column, we continue. */
9238       if (left_column != column && cur_column != column &&
9239           tree_view->priv->column_drop_func &&
9240           ! tree_view->priv->column_drop_func (tree_view, column, left_column, cur_column, tree_view->priv->column_drop_func_data))
9241         {
9242           left_column = cur_column;
9243           continue;
9244         }
9245       reorder = g_slice_new0 (GtkTreeViewColumnReorder);
9246       reorder->left_column = left_column;
9247       left_column = reorder->right_column = cur_column;
9248
9249       tree_view->priv->column_drag_info = g_list_append (tree_view->priv->column_drag_info, reorder);
9250     }
9251
9252   /* Add the last one */
9253   if (tree_view->priv->column_drop_func == NULL ||
9254       ((left_column != column) &&
9255        tree_view->priv->column_drop_func (tree_view, column, left_column, NULL, tree_view->priv->column_drop_func_data)))
9256     {
9257       reorder = g_slice_new0 (GtkTreeViewColumnReorder);
9258       reorder->left_column = left_column;
9259       reorder->right_column = NULL;
9260       tree_view->priv->column_drag_info = g_list_append (tree_view->priv->column_drag_info, reorder);
9261     }
9262
9263   /* We quickly check to see if it even makes sense to reorder columns. */
9264   /* If there is nothing that can be moved, then we return */
9265
9266   if (tree_view->priv->column_drag_info == NULL)
9267     return;
9268
9269   /* We know there are always 2 slots possbile, as you can always return column. */
9270   /* If that's all there is, return */
9271   if (tree_view->priv->column_drag_info->next == NULL ||
9272       (tree_view->priv->column_drag_info->next->next == NULL &&
9273        ((GtkTreeViewColumnReorder *)tree_view->priv->column_drag_info->data)->right_column == column &&
9274        ((GtkTreeViewColumnReorder *)tree_view->priv->column_drag_info->next->data)->left_column == column))
9275     {
9276       for (tmp_list = tree_view->priv->column_drag_info; tmp_list; tmp_list = tmp_list->next)
9277         g_slice_free (GtkTreeViewColumnReorder, tmp_list->data);
9278       g_list_free (tree_view->priv->column_drag_info);
9279       tree_view->priv->column_drag_info = NULL;
9280       return;
9281     }
9282   /* We fill in the ranges for the columns, now that we've isolated them */
9283   left = - TREE_VIEW_COLUMN_DRAG_DEAD_MULTIPLIER (tree_view);
9284
9285   for (tmp_list = tree_view->priv->column_drag_info; tmp_list; tmp_list = tmp_list->next)
9286     {
9287       reorder = (GtkTreeViewColumnReorder *) tmp_list->data;
9288
9289       reorder->left_align = left;
9290       if (tmp_list->next != NULL)
9291         {
9292           GtkAllocation right_allocation, left_allocation;
9293
9294           g_assert (tmp_list->next->data);
9295
9296           gtk_widget_get_allocation (reorder->right_column->button, &right_allocation);
9297           gtk_widget_get_allocation (((GtkTreeViewColumnReorder *)tmp_list->next->data)->left_column->button, &left_allocation);
9298           left = reorder->right_align = (right_allocation.x + right_allocation.width + left_allocation.x) / 2;
9299         }
9300       else
9301         {
9302           gint width;
9303
9304           gdk_drawable_get_size (tree_view->priv->header_window, &width, NULL);
9305           reorder->right_align = width + TREE_VIEW_COLUMN_DRAG_DEAD_MULTIPLIER (tree_view);
9306         }
9307     }
9308 }
9309
9310 void
9311 _gtk_tree_view_column_start_drag (GtkTreeView       *tree_view,
9312                                   GtkTreeViewColumn *column,
9313                                   GdkDevice         *device)
9314 {
9315   GdkEvent *send_event;
9316   GtkAllocation allocation;
9317   GtkAllocation button_allocation;
9318   gint x, y, width, height;
9319   GdkScreen *screen = gtk_widget_get_screen (GTK_WIDGET (tree_view));
9320   GdkDisplay *display = gdk_screen_get_display (screen);
9321
9322   g_return_if_fail (tree_view->priv->column_drag_info == NULL);
9323   g_return_if_fail (tree_view->priv->cur_reorder == NULL);
9324
9325   gtk_tree_view_set_column_drag_info (tree_view, column);
9326
9327   if (tree_view->priv->column_drag_info == NULL)
9328     return;
9329
9330   if (tree_view->priv->drag_window == NULL)
9331     {
9332       GdkWindowAttr attributes;
9333       guint attributes_mask;
9334
9335       gtk_widget_get_allocation (column->button, &button_allocation);
9336
9337       attributes.window_type = GDK_WINDOW_CHILD;
9338       attributes.wclass = GDK_INPUT_OUTPUT;
9339       attributes.x = button_allocation.x;
9340       attributes.y = 0;
9341       attributes.width = button_allocation.width;
9342       attributes.height = button_allocation.height;
9343       attributes.visual = gtk_widget_get_visual (GTK_WIDGET (tree_view));
9344       attributes.event_mask = GDK_VISIBILITY_NOTIFY_MASK | GDK_EXPOSURE_MASK | GDK_POINTER_MOTION_MASK;
9345       attributes_mask = GDK_WA_X | GDK_WA_Y | GDK_WA_VISUAL;
9346
9347       tree_view->priv->drag_window = gdk_window_new (tree_view->priv->bin_window,
9348                                                      &attributes,
9349                                                      attributes_mask);
9350       gdk_window_set_user_data (tree_view->priv->drag_window, GTK_WIDGET (tree_view));
9351     }
9352
9353   gdk_display_pointer_ungrab (display, GDK_CURRENT_TIME);
9354   gdk_display_keyboard_ungrab (display, GDK_CURRENT_TIME);
9355
9356   gtk_grab_remove (column->button);
9357
9358   send_event = gdk_event_new (GDK_LEAVE_NOTIFY);
9359   send_event->crossing.send_event = TRUE;
9360   send_event->crossing.window = g_object_ref (GTK_BUTTON (column->button)->event_window);
9361   send_event->crossing.subwindow = NULL;
9362   send_event->crossing.detail = GDK_NOTIFY_ANCESTOR;
9363   send_event->crossing.time = GDK_CURRENT_TIME;
9364   gdk_event_set_device (send_event, device);
9365
9366   gtk_propagate_event (column->button, send_event);
9367   gdk_event_free (send_event);
9368
9369   send_event = gdk_event_new (GDK_BUTTON_RELEASE);
9370   send_event->button.window = g_object_ref (gdk_screen_get_root_window (screen));
9371   send_event->button.send_event = TRUE;
9372   send_event->button.time = GDK_CURRENT_TIME;
9373   send_event->button.x = -1;
9374   send_event->button.y = -1;
9375   send_event->button.axes = NULL;
9376   send_event->button.state = 0;
9377   send_event->button.button = 1;
9378   send_event->button.x_root = 0;
9379   send_event->button.y_root = 0;
9380   gdk_event_set_device (send_event, device);
9381
9382   gtk_propagate_event (column->button, send_event);
9383   gdk_event_free (send_event);
9384
9385   /* Kids, don't try this at home */
9386   g_object_ref (column->button);
9387   gtk_container_remove (GTK_CONTAINER (tree_view), column->button);
9388   gtk_widget_set_parent_window (column->button, tree_view->priv->drag_window);
9389   gtk_widget_set_parent (column->button, GTK_WIDGET (tree_view));
9390   g_object_unref (column->button);
9391
9392   gtk_widget_get_allocation (column->button, &button_allocation);
9393   tree_view->priv->drag_column_x = button_allocation.x;
9394   allocation = 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 {
9424   GtkAllocation allocation;
9425   GdkRectangle rect;
9426
9427   if (!gtk_widget_get_realized (GTK_WIDGET (tree_view)))
9428     return;
9429
9430   gtk_widget_get_allocation (GTK_WIDGET (tree_view), &allocation);
9431   rect.x = 0;
9432   rect.width = MAX (tree_view->priv->expander_size, MAX (tree_view->priv->width, allocation.width));
9433
9434   rect.y = BACKGROUND_FIRST_PIXEL (tree_view, tree, node);
9435   rect.height = ROW_HEIGHT (tree_view, BACKGROUND_HEIGHT (node));
9436
9437   gdk_window_invalidate_rect (tree_view->priv->bin_window, &rect, TRUE);
9438 }
9439
9440 void
9441 _gtk_tree_view_queue_draw_node (GtkTreeView        *tree_view,
9442                                 GtkRBTree          *tree,
9443                                 GtkRBNode          *node,
9444                                 const GdkRectangle *clip_rect)
9445 {
9446   GtkAllocation allocation;
9447   GdkRectangle rect;
9448
9449   if (!gtk_widget_get_realized (GTK_WIDGET (tree_view)))
9450     return;
9451
9452   gtk_widget_get_allocation (GTK_WIDGET (tree_view), &allocation);
9453   rect.x = 0;
9454   rect.width = MAX (tree_view->priv->width, allocation.width);
9455
9456   rect.y = BACKGROUND_FIRST_PIXEL (tree_view, tree, node);
9457   rect.height = ROW_HEIGHT (tree_view, BACKGROUND_HEIGHT (node));
9458
9459   if (clip_rect)
9460     {
9461       GdkRectangle new_rect;
9462
9463       gdk_rectangle_intersect (clip_rect, &rect, &new_rect);
9464
9465       gdk_window_invalidate_rect (tree_view->priv->bin_window, &new_rect, TRUE);
9466     }
9467   else
9468     {
9469       gdk_window_invalidate_rect (tree_view->priv->bin_window, &rect, TRUE);
9470     }
9471 }
9472
9473 static void
9474 gtk_tree_view_queue_draw_path (GtkTreeView        *tree_view,
9475                                GtkTreePath        *path,
9476                                const GdkRectangle *clip_rect)
9477 {
9478   GtkRBTree *tree = NULL;
9479   GtkRBNode *node = NULL;
9480
9481   _gtk_tree_view_find_node (tree_view, path, &tree, &node);
9482
9483   if (tree)
9484     _gtk_tree_view_queue_draw_node (tree_view, tree, node, clip_rect);
9485 }
9486
9487 /* x and y are the mouse position
9488  */
9489 static void
9490 gtk_tree_view_draw_arrow (GtkTreeView *tree_view,
9491                           cairo_t     *cr,
9492                           GtkRBTree   *tree,
9493                           GtkRBNode   *node,
9494                           /* in bin_window coordinates */
9495                           gint         x,
9496                           gint         y)
9497 {
9498   GdkRectangle area;
9499   GtkStateType state;
9500   GtkWidget *widget;
9501   gint x_offset = 0;
9502   gint x2;
9503   gint vertical_separator;
9504   gint expander_size;
9505   GtkExpanderStyle expander_style;
9506
9507   widget = GTK_WIDGET (tree_view);
9508
9509   gtk_widget_style_get (widget,
9510                         "vertical-separator", &vertical_separator,
9511                         NULL);
9512   expander_size = tree_view->priv->expander_size - EXPANDER_EXTRA_PADDING;
9513
9514   if (! GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_PARENT))
9515     return;
9516
9517   gtk_tree_view_get_arrow_xrange (tree_view, tree, &x_offset, &x2);
9518
9519   area.x = x_offset;
9520   area.y = CELL_FIRST_PIXEL (tree_view, tree, node, vertical_separator);
9521   area.width = expander_size + 2;
9522   area.height = MAX (CELL_HEIGHT (node, vertical_separator), (expander_size - vertical_separator));
9523
9524   if (gtk_widget_get_state (widget) == GTK_STATE_INSENSITIVE)
9525     {
9526       state = GTK_STATE_INSENSITIVE;
9527     }
9528   else if (node == tree_view->priv->button_pressed_node)
9529     {
9530       if (x >= area.x && x <= (area.x + area.width) &&
9531           y >= area.y && y <= (area.y + area.height))
9532         state = GTK_STATE_ACTIVE;
9533       else
9534         state = GTK_STATE_NORMAL;
9535     }
9536   else
9537     {
9538       if (node == tree_view->priv->prelight_node &&
9539           GTK_TREE_VIEW_FLAG_SET (tree_view, GTK_TREE_VIEW_ARROW_PRELIT))
9540         state = GTK_STATE_PRELIGHT;
9541       else
9542         state = GTK_STATE_NORMAL;
9543     }
9544
9545   if (GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_SEMI_EXPANDED))
9546     expander_style = GTK_EXPANDER_SEMI_EXPANDED;
9547   else if (GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_SEMI_COLLAPSED))
9548     expander_style = GTK_EXPANDER_SEMI_COLLAPSED;
9549   else if (node->children != NULL)
9550     expander_style = GTK_EXPANDER_EXPANDED;
9551   else
9552     expander_style = GTK_EXPANDER_COLLAPSED;
9553
9554   gtk_cairo_paint_expander (gtk_widget_get_style (widget),
9555                       cr,
9556                       state,
9557                       widget,
9558                       "treeview",
9559                       area.x + area.width / 2,
9560                       area.y + area.height / 2,
9561                       expander_style);
9562 }
9563
9564 static void
9565 gtk_tree_view_focus_to_cursor (GtkTreeView *tree_view)
9566
9567 {
9568   GtkTreePath *cursor_path;
9569
9570   if ((tree_view->priv->tree == NULL) ||
9571       (! gtk_widget_get_realized (GTK_WIDGET (tree_view))))
9572     return;
9573
9574   cursor_path = NULL;
9575   if (tree_view->priv->cursor)
9576     cursor_path = gtk_tree_row_reference_get_path (tree_view->priv->cursor);
9577
9578   if (cursor_path == NULL)
9579     {
9580       /* Consult the selection before defaulting to the
9581        * first focusable element
9582        */
9583       GList *selected_rows;
9584       GtkTreeModel *model;
9585       GtkTreeSelection *selection;
9586
9587       selection = gtk_tree_view_get_selection (tree_view);
9588       selected_rows = gtk_tree_selection_get_selected_rows (selection, &model);
9589
9590       if (selected_rows)
9591         {
9592           cursor_path = gtk_tree_path_copy((const GtkTreePath *)(selected_rows->data));
9593           g_list_foreach (selected_rows, (GFunc)gtk_tree_path_free, NULL);
9594           g_list_free (selected_rows);
9595         }
9596       else
9597         {
9598           cursor_path = gtk_tree_path_new_first ();
9599           search_first_focusable_path (tree_view, &cursor_path,
9600                                        TRUE, NULL, NULL);
9601         }
9602
9603       gtk_tree_row_reference_free (tree_view->priv->cursor);
9604       tree_view->priv->cursor = NULL;
9605
9606       if (cursor_path)
9607         {
9608           if (tree_view->priv->selection->type == GTK_SELECTION_MULTIPLE)
9609             gtk_tree_view_real_set_cursor (tree_view, cursor_path, FALSE, FALSE);
9610           else
9611             gtk_tree_view_real_set_cursor (tree_view, cursor_path, TRUE, FALSE);
9612         }
9613     }
9614
9615   if (cursor_path)
9616     {
9617       GTK_TREE_VIEW_SET_FLAG (tree_view, GTK_TREE_VIEW_DRAW_KEYFOCUS);
9618
9619       gtk_tree_view_queue_draw_path (tree_view, cursor_path, NULL);
9620       gtk_tree_path_free (cursor_path);
9621
9622       if (tree_view->priv->focus_column == NULL)
9623         {
9624           GList *list;
9625           for (list = tree_view->priv->columns; list; list = list->next)
9626             {
9627               if (GTK_TREE_VIEW_COLUMN (list->data)->visible)
9628                 {
9629                   tree_view->priv->focus_column = GTK_TREE_VIEW_COLUMN (list->data);
9630                   break;
9631                 }
9632             }
9633         }
9634     }
9635 }
9636
9637 static void
9638 gtk_tree_view_move_cursor_up_down (GtkTreeView *tree_view,
9639                                    gint         count)
9640 {
9641   gint selection_count;
9642   GtkRBTree *cursor_tree = NULL;
9643   GtkRBNode *cursor_node = NULL;
9644   GtkRBTree *new_cursor_tree = NULL;
9645   GtkRBNode *new_cursor_node = NULL;
9646   GtkTreePath *cursor_path = NULL;
9647   gboolean grab_focus = TRUE;
9648   gboolean selectable;
9649
9650   if (! gtk_widget_has_focus (GTK_WIDGET (tree_view)))
9651     return;
9652
9653   cursor_path = NULL;
9654   if (!gtk_tree_row_reference_valid (tree_view->priv->cursor))
9655     /* FIXME: we lost the cursor; should we get the first? */
9656     return;
9657
9658   cursor_path = gtk_tree_row_reference_get_path (tree_view->priv->cursor);
9659   _gtk_tree_view_find_node (tree_view, cursor_path,
9660                             &cursor_tree, &cursor_node);
9661
9662   if (cursor_tree == NULL)
9663     /* FIXME: we lost the cursor; should we get the first? */
9664     return;
9665
9666   selection_count = gtk_tree_selection_count_selected_rows (tree_view->priv->selection);
9667   selectable = _gtk_tree_selection_row_is_selectable (tree_view->priv->selection,
9668                                                       cursor_node,
9669                                                       cursor_path);
9670
9671   if (selection_count == 0
9672       && tree_view->priv->selection->type != GTK_SELECTION_NONE
9673       && !tree_view->priv->ctrl_pressed
9674       && selectable)
9675     {
9676       /* Don't move the cursor, but just select the current node */
9677       new_cursor_tree = cursor_tree;
9678       new_cursor_node = cursor_node;
9679     }
9680   else
9681     {
9682       if (count == -1)
9683         _gtk_rbtree_prev_full (cursor_tree, cursor_node,
9684                                &new_cursor_tree, &new_cursor_node);
9685       else
9686         _gtk_rbtree_next_full (cursor_tree, cursor_node,
9687                                &new_cursor_tree, &new_cursor_node);
9688     }
9689
9690   gtk_tree_path_free (cursor_path);
9691
9692   if (new_cursor_node)
9693     {
9694       cursor_path = _gtk_tree_view_find_path (tree_view,
9695                                               new_cursor_tree, new_cursor_node);
9696
9697       search_first_focusable_path (tree_view, &cursor_path,
9698                                    (count != -1),
9699                                    &new_cursor_tree,
9700                                    &new_cursor_node);
9701
9702       if (cursor_path)
9703         gtk_tree_path_free (cursor_path);
9704     }
9705
9706   /*
9707    * If the list has only one item and multi-selection is set then select
9708    * the row (if not yet selected).
9709    */
9710   if (tree_view->priv->selection->type == GTK_SELECTION_MULTIPLE &&
9711       new_cursor_node == NULL)
9712     {
9713       if (count == -1)
9714         _gtk_rbtree_next_full (cursor_tree, cursor_node,
9715                                &new_cursor_tree, &new_cursor_node);
9716       else
9717         _gtk_rbtree_prev_full (cursor_tree, cursor_node,
9718                                &new_cursor_tree, &new_cursor_node);
9719
9720       if (new_cursor_node == NULL
9721           && !GTK_RBNODE_FLAG_SET (cursor_node, GTK_RBNODE_IS_SELECTED))
9722         {
9723           new_cursor_node = cursor_node;
9724           new_cursor_tree = cursor_tree;
9725         }
9726       else
9727         {
9728           new_cursor_node = NULL;
9729         }
9730     }
9731
9732   if (new_cursor_node)
9733     {
9734       cursor_path = _gtk_tree_view_find_path (tree_view, new_cursor_tree, new_cursor_node);
9735       gtk_tree_view_real_set_cursor (tree_view, cursor_path, TRUE, TRUE);
9736       gtk_tree_path_free (cursor_path);
9737     }
9738   else
9739     {
9740       gtk_tree_view_clamp_node_visible (tree_view, cursor_tree, cursor_node);
9741
9742       if (!tree_view->priv->shift_pressed)
9743         {
9744           if (! gtk_widget_keynav_failed (GTK_WIDGET (tree_view),
9745                                           count < 0 ?
9746                                           GTK_DIR_UP : GTK_DIR_DOWN))
9747             {
9748               GtkWidget *toplevel = gtk_widget_get_toplevel (GTK_WIDGET (tree_view));
9749
9750               if (toplevel)
9751                 gtk_widget_child_focus (toplevel,
9752                                         count < 0 ?
9753                                         GTK_DIR_TAB_BACKWARD :
9754                                         GTK_DIR_TAB_FORWARD);
9755
9756               grab_focus = FALSE;
9757             }
9758         }
9759       else
9760         {
9761           gtk_widget_error_bell (GTK_WIDGET (tree_view));
9762         }
9763     }
9764
9765   if (grab_focus)
9766     gtk_widget_grab_focus (GTK_WIDGET (tree_view));
9767 }
9768
9769 static void
9770 gtk_tree_view_move_cursor_page_up_down (GtkTreeView *tree_view,
9771                                         gint         count)
9772 {
9773   GtkRBTree *cursor_tree = NULL;
9774   GtkRBNode *cursor_node = NULL;
9775   GtkTreePath *old_cursor_path = NULL;
9776   GtkTreePath *cursor_path = NULL;
9777   GtkRBTree *start_cursor_tree = NULL;
9778   GtkRBNode *start_cursor_node = NULL;
9779   gint y;
9780   gint window_y;
9781   gint vertical_separator;
9782
9783   if (!gtk_widget_has_focus (GTK_WIDGET (tree_view)))
9784     return;
9785
9786   if (gtk_tree_row_reference_valid (tree_view->priv->cursor))
9787     old_cursor_path = gtk_tree_row_reference_get_path (tree_view->priv->cursor);
9788   else
9789     /* This is sorta weird.  Focus in should give us a cursor */
9790     return;
9791
9792   gtk_widget_style_get (GTK_WIDGET (tree_view), "vertical-separator", &vertical_separator, NULL);
9793   _gtk_tree_view_find_node (tree_view, old_cursor_path,
9794                             &cursor_tree, &cursor_node);
9795
9796   if (cursor_tree == NULL)
9797     {
9798       /* FIXME: we lost the cursor.  Should we try to get one? */
9799       gtk_tree_path_free (old_cursor_path);
9800       return;
9801     }
9802   g_return_if_fail (cursor_node != NULL);
9803
9804   y = _gtk_rbtree_node_find_offset (cursor_tree, cursor_node);
9805   window_y = RBTREE_Y_TO_TREE_WINDOW_Y (tree_view, y);
9806   y += tree_view->priv->cursor_offset;
9807   y += count * (int)tree_view->priv->vadjustment->page_increment;
9808   y = CLAMP (y, (gint)tree_view->priv->vadjustment->lower,  (gint)tree_view->priv->vadjustment->upper - vertical_separator);
9809
9810   if (y >= tree_view->priv->height)
9811     y = tree_view->priv->height - 1;
9812
9813   tree_view->priv->cursor_offset =
9814     _gtk_rbtree_find_offset (tree_view->priv->tree, y,
9815                              &cursor_tree, &cursor_node);
9816
9817   if (cursor_tree == NULL)
9818     {
9819       /* FIXME: we lost the cursor.  Should we try to get one? */
9820       gtk_tree_path_free (old_cursor_path);
9821       return;
9822     }
9823
9824   if (tree_view->priv->cursor_offset > BACKGROUND_HEIGHT (cursor_node))
9825     {
9826       _gtk_rbtree_next_full (cursor_tree, cursor_node,
9827                              &cursor_tree, &cursor_node);
9828       tree_view->priv->cursor_offset -= BACKGROUND_HEIGHT (cursor_node);
9829     }
9830
9831   y -= tree_view->priv->cursor_offset;
9832   cursor_path = _gtk_tree_view_find_path (tree_view, cursor_tree, cursor_node);
9833
9834   start_cursor_tree = cursor_tree;
9835   start_cursor_node = cursor_node;
9836
9837   if (! search_first_focusable_path (tree_view, &cursor_path,
9838                                      (count != -1),
9839                                      &cursor_tree, &cursor_node))
9840     {
9841       /* It looks like we reached the end of the view without finding
9842        * a focusable row.  We will step backwards to find the last
9843        * focusable row.
9844        */
9845       cursor_tree = start_cursor_tree;
9846       cursor_node = start_cursor_node;
9847       cursor_path = _gtk_tree_view_find_path (tree_view, cursor_tree, cursor_node);
9848
9849       search_first_focusable_path (tree_view, &cursor_path,
9850                                    (count == -1),
9851                                    &cursor_tree, &cursor_node);
9852     }
9853
9854   if (!cursor_path)
9855     goto cleanup;
9856
9857   /* update y */
9858   y = _gtk_rbtree_node_find_offset (cursor_tree, cursor_node);
9859
9860   gtk_tree_view_real_set_cursor (tree_view, cursor_path, TRUE, FALSE);
9861
9862   y -= window_y;
9863   gtk_tree_view_scroll_to_point (tree_view, -1, y);
9864   gtk_tree_view_clamp_node_visible (tree_view, cursor_tree, cursor_node);
9865   _gtk_tree_view_queue_draw_node (tree_view, cursor_tree, cursor_node, NULL);
9866
9867   if (!gtk_tree_path_compare (old_cursor_path, cursor_path))
9868     gtk_widget_error_bell (GTK_WIDGET (tree_view));
9869
9870   gtk_widget_grab_focus (GTK_WIDGET (tree_view));
9871
9872 cleanup:
9873   gtk_tree_path_free (old_cursor_path);
9874   gtk_tree_path_free (cursor_path);
9875 }
9876
9877 static void
9878 gtk_tree_view_move_cursor_left_right (GtkTreeView *tree_view,
9879                                       gint         count)
9880 {
9881   GtkRBTree *cursor_tree = NULL;
9882   GtkRBNode *cursor_node = NULL;
9883   GtkTreePath *cursor_path = NULL;
9884   GtkTreeViewColumn *column;
9885   GtkTreeIter iter;
9886   GList *list;
9887   gboolean found_column = FALSE;
9888   gboolean rtl;
9889
9890   rtl = (gtk_widget_get_direction (GTK_WIDGET (tree_view)) == GTK_TEXT_DIR_RTL);
9891
9892   if (!gtk_widget_has_focus (GTK_WIDGET (tree_view)))
9893     return;
9894
9895   if (gtk_tree_row_reference_valid (tree_view->priv->cursor))
9896     cursor_path = gtk_tree_row_reference_get_path (tree_view->priv->cursor);
9897   else
9898     return;
9899
9900   _gtk_tree_view_find_node (tree_view, cursor_path, &cursor_tree, &cursor_node);
9901   if (cursor_tree == NULL)
9902     return;
9903   if (gtk_tree_model_get_iter (tree_view->priv->model, &iter, cursor_path) == FALSE)
9904     {
9905       gtk_tree_path_free (cursor_path);
9906       return;
9907     }
9908   gtk_tree_path_free (cursor_path);
9909
9910   list = rtl ? g_list_last (tree_view->priv->columns) : g_list_first (tree_view->priv->columns);
9911   if (tree_view->priv->focus_column)
9912     {
9913       for (; list; list = (rtl ? list->prev : list->next))
9914         {
9915           if (list->data == tree_view->priv->focus_column)
9916             break;
9917         }
9918     }
9919
9920   while (list)
9921     {
9922       gboolean left, right;
9923
9924       column = list->data;
9925       if (column->visible == FALSE)
9926         goto loop_end;
9927
9928       gtk_tree_view_column_cell_set_cell_data (column,
9929                                                tree_view->priv->model,
9930                                                &iter,
9931                                                GTK_RBNODE_FLAG_SET (cursor_node, GTK_RBNODE_IS_PARENT),
9932                                                cursor_node->children?TRUE:FALSE);
9933
9934       if (rtl)
9935         {
9936           right = list->prev ? TRUE : FALSE;
9937           left = list->next ? TRUE : FALSE;
9938         }
9939       else
9940         {
9941           left = list->prev ? TRUE : FALSE;
9942           right = list->next ? TRUE : FALSE;
9943         }
9944
9945       if (_gtk_tree_view_column_cell_focus (column, count, left, right))
9946         {
9947           tree_view->priv->focus_column = column;
9948           found_column = TRUE;
9949           break;
9950         }
9951     loop_end:
9952       if (count == 1)
9953         list = rtl ? list->prev : list->next;
9954       else
9955         list = rtl ? list->next : list->prev;
9956     }
9957
9958   if (found_column)
9959     {
9960       if (!gtk_tree_view_has_special_cell (tree_view))
9961         _gtk_tree_view_queue_draw_node (tree_view,
9962                                         cursor_tree,
9963                                         cursor_node,
9964                                         NULL);
9965       g_signal_emit (tree_view, tree_view_signals[CURSOR_CHANGED], 0);
9966       gtk_widget_grab_focus (GTK_WIDGET (tree_view));
9967     }
9968   else
9969     {
9970       gtk_widget_error_bell (GTK_WIDGET (tree_view));
9971     }
9972
9973   gtk_tree_view_clamp_column_visible (tree_view,
9974                                       tree_view->priv->focus_column, TRUE);
9975 }
9976
9977 static void
9978 gtk_tree_view_move_cursor_start_end (GtkTreeView *tree_view,
9979                                      gint         count)
9980 {
9981   GtkRBTree *cursor_tree;
9982   GtkRBNode *cursor_node;
9983   GtkTreePath *path;
9984   GtkTreePath *old_path;
9985
9986   if (!gtk_widget_has_focus (GTK_WIDGET (tree_view)))
9987     return;
9988
9989   g_return_if_fail (tree_view->priv->tree != NULL);
9990
9991   gtk_tree_view_get_cursor (tree_view, &old_path, NULL);
9992
9993   cursor_tree = tree_view->priv->tree;
9994   cursor_node = cursor_tree->root;
9995
9996   if (count == -1)
9997     {
9998       while (cursor_node && cursor_node->left != cursor_tree->nil)
9999         cursor_node = cursor_node->left;
10000
10001       /* Now go forward to find the first focusable row. */
10002       path = _gtk_tree_view_find_path (tree_view, cursor_tree, cursor_node);
10003       search_first_focusable_path (tree_view, &path,
10004                                    TRUE, &cursor_tree, &cursor_node);
10005     }
10006   else
10007     {
10008       do
10009         {
10010           while (cursor_node && cursor_node->right != cursor_tree->nil)
10011             cursor_node = cursor_node->right;
10012           if (cursor_node->children == NULL)
10013             break;
10014
10015           cursor_tree = cursor_node->children;
10016           cursor_node = cursor_tree->root;
10017         }
10018       while (1);
10019
10020       /* Now go backwards to find last focusable row. */
10021       path = _gtk_tree_view_find_path (tree_view, cursor_tree, cursor_node);
10022       search_first_focusable_path (tree_view, &path,
10023                                    FALSE, &cursor_tree, &cursor_node);
10024     }
10025
10026   if (!path)
10027     goto cleanup;
10028
10029   if (gtk_tree_path_compare (old_path, path))
10030     {
10031       gtk_tree_view_real_set_cursor (tree_view, path, TRUE, TRUE);
10032       gtk_widget_grab_focus (GTK_WIDGET (tree_view));
10033     }
10034   else
10035     {
10036       gtk_widget_error_bell (GTK_WIDGET (tree_view));
10037     }
10038
10039 cleanup:
10040   gtk_tree_path_free (old_path);
10041   gtk_tree_path_free (path);
10042 }
10043
10044 static gboolean
10045 gtk_tree_view_real_select_all (GtkTreeView *tree_view)
10046 {
10047   if (!gtk_widget_has_focus (GTK_WIDGET (tree_view)))
10048     return FALSE;
10049
10050   if (tree_view->priv->selection->type != GTK_SELECTION_MULTIPLE)
10051     return FALSE;
10052
10053   gtk_tree_selection_select_all (tree_view->priv->selection);
10054
10055   return TRUE;
10056 }
10057
10058 static gboolean
10059 gtk_tree_view_real_unselect_all (GtkTreeView *tree_view)
10060 {
10061   if (!gtk_widget_has_focus (GTK_WIDGET (tree_view)))
10062     return FALSE;
10063
10064   if (tree_view->priv->selection->type != GTK_SELECTION_MULTIPLE)
10065     return FALSE;
10066
10067   gtk_tree_selection_unselect_all (tree_view->priv->selection);
10068
10069   return TRUE;
10070 }
10071
10072 static gboolean
10073 gtk_tree_view_real_select_cursor_row (GtkTreeView *tree_view,
10074                                       gboolean     start_editing)
10075 {
10076   GtkRBTree *new_tree = NULL;
10077   GtkRBNode *new_node = NULL;
10078   GtkRBTree *cursor_tree = NULL;
10079   GtkRBNode *cursor_node = NULL;
10080   GtkTreePath *cursor_path = NULL;
10081   GtkTreeSelectMode mode = 0;
10082
10083   if (!gtk_widget_has_focus (GTK_WIDGET (tree_view)))
10084     return FALSE;
10085
10086   if (tree_view->priv->cursor)
10087     cursor_path = gtk_tree_row_reference_get_path (tree_view->priv->cursor);
10088
10089   if (cursor_path == NULL)
10090     return FALSE;
10091
10092   _gtk_tree_view_find_node (tree_view, cursor_path,
10093                             &cursor_tree, &cursor_node);
10094
10095   if (cursor_tree == NULL)
10096     {
10097       gtk_tree_path_free (cursor_path);
10098       return FALSE;
10099     }
10100
10101   if (!tree_view->priv->shift_pressed && start_editing &&
10102       tree_view->priv->focus_column)
10103     {
10104       if (gtk_tree_view_start_editing (tree_view, cursor_path))
10105         {
10106           gtk_tree_path_free (cursor_path);
10107           return TRUE;
10108         }
10109     }
10110
10111   if (tree_view->priv->ctrl_pressed)
10112     mode |= GTK_TREE_SELECT_MODE_TOGGLE;
10113   if (tree_view->priv->shift_pressed)
10114     mode |= GTK_TREE_SELECT_MODE_EXTEND;
10115
10116   _gtk_tree_selection_internal_select_node (tree_view->priv->selection,
10117                                             cursor_node,
10118                                             cursor_tree,
10119                                             cursor_path,
10120                                             mode,
10121                                             FALSE);
10122
10123   /* We bail out if the original (tree, node) don't exist anymore after
10124    * handling the selection-changed callback.  We do return TRUE because
10125    * the key press has been handled at this point.
10126    */
10127   _gtk_tree_view_find_node (tree_view, cursor_path, &new_tree, &new_node);
10128
10129   if (cursor_tree != new_tree || cursor_node != new_node)
10130     return FALSE;
10131
10132   gtk_tree_view_clamp_node_visible (tree_view, cursor_tree, cursor_node);
10133
10134   gtk_widget_grab_focus (GTK_WIDGET (tree_view));
10135   _gtk_tree_view_queue_draw_node (tree_view, cursor_tree, cursor_node, NULL);
10136
10137   if (!tree_view->priv->shift_pressed)
10138     gtk_tree_view_row_activated (tree_view, cursor_path,
10139                                  tree_view->priv->focus_column);
10140
10141   gtk_tree_path_free (cursor_path);
10142
10143   return TRUE;
10144 }
10145
10146 static gboolean
10147 gtk_tree_view_real_toggle_cursor_row (GtkTreeView *tree_view)
10148 {
10149   GtkRBTree *new_tree = NULL;
10150   GtkRBNode *new_node = NULL;
10151   GtkRBTree *cursor_tree = NULL;
10152   GtkRBNode *cursor_node = NULL;
10153   GtkTreePath *cursor_path = NULL;
10154
10155   if (!gtk_widget_has_focus (GTK_WIDGET (tree_view)))
10156     return FALSE;
10157
10158   cursor_path = NULL;
10159   if (tree_view->priv->cursor)
10160     cursor_path = gtk_tree_row_reference_get_path (tree_view->priv->cursor);
10161
10162   if (cursor_path == NULL)
10163     return FALSE;
10164
10165   _gtk_tree_view_find_node (tree_view, cursor_path,
10166                             &cursor_tree, &cursor_node);
10167   if (cursor_tree == NULL)
10168     {
10169       gtk_tree_path_free (cursor_path);
10170       return FALSE;
10171     }
10172
10173   _gtk_tree_selection_internal_select_node (tree_view->priv->selection,
10174                                             cursor_node,
10175                                             cursor_tree,
10176                                             cursor_path,
10177                                             GTK_TREE_SELECT_MODE_TOGGLE,
10178                                             FALSE);
10179
10180   /* We bail out if the original (tree, node) don't exist anymore after
10181    * handling the selection-changed callback.  We do return TRUE because
10182    * the key press has been handled at this point.
10183    */
10184   _gtk_tree_view_find_node (tree_view, cursor_path, &new_tree, &new_node);
10185
10186   if (cursor_tree != new_tree || cursor_node != new_node)
10187     return FALSE;
10188
10189   gtk_tree_view_clamp_node_visible (tree_view, cursor_tree, cursor_node);
10190
10191   gtk_widget_grab_focus (GTK_WIDGET (tree_view));
10192   gtk_tree_view_queue_draw_path (tree_view, cursor_path, NULL);
10193   gtk_tree_path_free (cursor_path);
10194
10195   return TRUE;
10196 }
10197
10198 static gboolean
10199 gtk_tree_view_real_expand_collapse_cursor_row (GtkTreeView *tree_view,
10200                                                gboolean     logical,
10201                                                gboolean     expand,
10202                                                gboolean     open_all)
10203 {
10204   GtkTreePath *cursor_path = NULL;
10205   GtkRBTree *tree;
10206   GtkRBNode *node;
10207
10208   if (!gtk_widget_has_focus (GTK_WIDGET (tree_view)))
10209     return FALSE;
10210
10211   cursor_path = NULL;
10212   if (tree_view->priv->cursor)
10213     cursor_path = gtk_tree_row_reference_get_path (tree_view->priv->cursor);
10214
10215   if (cursor_path == NULL)
10216     return FALSE;
10217
10218   if (_gtk_tree_view_find_node (tree_view, cursor_path, &tree, &node))
10219     return FALSE;
10220
10221   /* Don't handle the event if we aren't an expander */
10222   if (!((node->flags & GTK_RBNODE_IS_PARENT) == GTK_RBNODE_IS_PARENT))
10223     return FALSE;
10224
10225   if (!logical
10226       && gtk_widget_get_direction (GTK_WIDGET (tree_view)) == GTK_TEXT_DIR_RTL)
10227     expand = !expand;
10228
10229   if (expand)
10230     gtk_tree_view_real_expand_row (tree_view, cursor_path, tree, node, open_all, TRUE);
10231   else
10232     gtk_tree_view_real_collapse_row (tree_view, cursor_path, tree, node, TRUE);
10233
10234   gtk_tree_path_free (cursor_path);
10235
10236   return TRUE;
10237 }
10238
10239 static gboolean
10240 gtk_tree_view_real_select_cursor_parent (GtkTreeView *tree_view)
10241 {
10242   GtkRBTree *cursor_tree = NULL;
10243   GtkRBNode *cursor_node = NULL;
10244   GtkTreePath *cursor_path = NULL;
10245   GdkModifierType state;
10246
10247   if (!gtk_widget_has_focus (GTK_WIDGET (tree_view)))
10248     goto out;
10249
10250   cursor_path = NULL;
10251   if (tree_view->priv->cursor)
10252     cursor_path = gtk_tree_row_reference_get_path (tree_view->priv->cursor);
10253
10254   if (cursor_path == NULL)
10255     goto out;
10256
10257   _gtk_tree_view_find_node (tree_view, cursor_path,
10258                             &cursor_tree, &cursor_node);
10259   if (cursor_tree == NULL)
10260     {
10261       gtk_tree_path_free (cursor_path);
10262       goto out;
10263     }
10264
10265   if (cursor_tree->parent_node)
10266     {
10267       gtk_tree_view_queue_draw_path (tree_view, cursor_path, NULL);
10268       cursor_node = cursor_tree->parent_node;
10269       cursor_tree = cursor_tree->parent_tree;
10270
10271       gtk_tree_path_up (cursor_path);
10272
10273       if (gtk_get_current_event_state (&state))
10274         {
10275           if ((state & GDK_CONTROL_MASK) == GDK_CONTROL_MASK)
10276             tree_view->priv->ctrl_pressed = TRUE;
10277         }
10278
10279       gtk_tree_view_real_set_cursor (tree_view, cursor_path, TRUE, FALSE);
10280       gtk_tree_view_clamp_node_visible (tree_view, cursor_tree, cursor_node);
10281
10282       gtk_widget_grab_focus (GTK_WIDGET (tree_view));
10283       gtk_tree_view_queue_draw_path (tree_view, cursor_path, NULL);
10284       gtk_tree_path_free (cursor_path);
10285
10286       tree_view->priv->ctrl_pressed = FALSE;
10287
10288       return TRUE;
10289     }
10290
10291  out:
10292
10293   tree_view->priv->search_entry_avoid_unhandled_binding = TRUE;
10294   return FALSE;
10295 }
10296
10297 static gboolean
10298 gtk_tree_view_search_entry_flush_timeout (GtkTreeView *tree_view)
10299 {
10300   gtk_tree_view_search_dialog_hide (tree_view->priv->search_window, tree_view, NULL);
10301   tree_view->priv->typeselect_flush_timeout = 0;
10302
10303   return FALSE;
10304 }
10305
10306 /* Cut and paste from gtkwindow.c */
10307 static void
10308 send_focus_change (GtkWidget *widget,
10309                    GdkDevice *device,
10310                    gboolean   in)
10311 {
10312   GdkDeviceManager *device_manager;
10313   GList *devices, *d;
10314
10315   device_manager = gdk_display_get_device_manager (gtk_widget_get_display (widget));
10316   devices = gdk_device_manager_list_devices (device_manager, GDK_DEVICE_TYPE_MASTER);
10317   devices = g_list_concat (devices, gdk_device_manager_list_devices (device_manager, GDK_DEVICE_TYPE_SLAVE));
10318   devices = g_list_concat (devices, gdk_device_manager_list_devices (device_manager, GDK_DEVICE_TYPE_FLOATING));
10319
10320   for (d = devices; d; d = d->next)
10321     {
10322       GdkDevice *dev = d->data;
10323       GdkEvent *fevent;
10324       GdkWindow *window;
10325
10326       if (dev->source != GDK_SOURCE_KEYBOARD)
10327         continue;
10328
10329       window = gtk_widget_get_window (widget);
10330
10331       /* Skip non-master keyboards that haven't
10332        * selected for events from this window
10333        */
10334       if (gdk_device_get_device_type (dev) != GDK_DEVICE_TYPE_MASTER &&
10335           !gdk_window_get_device_events (window, dev))
10336         continue;
10337
10338       fevent = gdk_event_new (GDK_FOCUS_CHANGE);
10339
10340       fevent->focus_change.type = GDK_FOCUS_CHANGE;
10341       fevent->focus_change.window = g_object_ref (window);
10342       fevent->focus_change.in = in;
10343       gdk_event_set_device (fevent, device);
10344
10345       gtk_widget_send_focus_change (widget, fevent);
10346
10347       gdk_event_free (fevent);
10348     }
10349 }
10350
10351 static void
10352 gtk_tree_view_ensure_interactive_directory (GtkTreeView *tree_view)
10353 {
10354   GtkWidget *frame, *vbox, *toplevel;
10355   GdkScreen *screen;
10356
10357   if (tree_view->priv->search_custom_entry_set)
10358     return;
10359
10360   toplevel = gtk_widget_get_toplevel (GTK_WIDGET (tree_view));
10361   screen = gtk_widget_get_screen (GTK_WIDGET (tree_view));
10362
10363    if (tree_view->priv->search_window != NULL)
10364      {
10365        if (gtk_window_has_group (GTK_WINDOW (toplevel)))
10366          gtk_window_group_add_window (gtk_window_get_group (GTK_WINDOW (toplevel)),
10367                                       GTK_WINDOW (tree_view->priv->search_window));
10368        else if (gtk_window_has_group (GTK_WINDOW (tree_view->priv->search_window)))
10369          gtk_window_group_remove_window (gtk_window_get_group (GTK_WINDOW (tree_view->priv->search_window)),
10370                                          GTK_WINDOW (tree_view->priv->search_window));
10371
10372        gtk_window_set_screen (GTK_WINDOW (tree_view->priv->search_window), screen);
10373
10374        return;
10375      }
10376
10377   tree_view->priv->search_window = gtk_window_new (GTK_WINDOW_POPUP);
10378   gtk_window_set_screen (GTK_WINDOW (tree_view->priv->search_window), screen);
10379
10380   if (gtk_window_has_group (GTK_WINDOW (toplevel)))
10381     gtk_window_group_add_window (gtk_window_get_group (GTK_WINDOW (toplevel)),
10382                                  GTK_WINDOW (tree_view->priv->search_window));
10383
10384   gtk_window_set_type_hint (GTK_WINDOW (tree_view->priv->search_window),
10385                             GDK_WINDOW_TYPE_HINT_UTILITY);
10386   gtk_window_set_modal (GTK_WINDOW (tree_view->priv->search_window), TRUE);
10387   g_signal_connect (tree_view->priv->search_window, "delete-event",
10388                     G_CALLBACK (gtk_tree_view_search_delete_event),
10389                     tree_view);
10390   g_signal_connect (tree_view->priv->search_window, "key-press-event",
10391                     G_CALLBACK (gtk_tree_view_search_key_press_event),
10392                     tree_view);
10393   g_signal_connect (tree_view->priv->search_window, "button-press-event",
10394                     G_CALLBACK (gtk_tree_view_search_button_press_event),
10395                     tree_view);
10396   g_signal_connect (tree_view->priv->search_window, "scroll-event",
10397                     G_CALLBACK (gtk_tree_view_search_scroll_event),
10398                     tree_view);
10399
10400   frame = gtk_frame_new (NULL);
10401   gtk_frame_set_shadow_type (GTK_FRAME (frame), GTK_SHADOW_ETCHED_IN);
10402   gtk_widget_show (frame);
10403   gtk_container_add (GTK_CONTAINER (tree_view->priv->search_window), frame);
10404
10405   vbox = gtk_vbox_new (FALSE, 0);
10406   gtk_widget_show (vbox);
10407   gtk_container_add (GTK_CONTAINER (frame), vbox);
10408   gtk_container_set_border_width (GTK_CONTAINER (vbox), 3);
10409
10410   /* add entry */
10411   tree_view->priv->search_entry = gtk_entry_new ();
10412   gtk_widget_show (tree_view->priv->search_entry);
10413   g_signal_connect (tree_view->priv->search_entry, "populate-popup",
10414                     G_CALLBACK (gtk_tree_view_search_disable_popdown),
10415                     tree_view);
10416   g_signal_connect (tree_view->priv->search_entry,
10417                     "activate", G_CALLBACK (gtk_tree_view_search_activate),
10418                     tree_view);
10419   g_signal_connect (GTK_ENTRY (tree_view->priv->search_entry)->im_context,
10420                     "preedit-changed",
10421                     G_CALLBACK (gtk_tree_view_search_preedit_changed),
10422                     tree_view);
10423   gtk_container_add (GTK_CONTAINER (vbox),
10424                      tree_view->priv->search_entry);
10425
10426   gtk_widget_realize (tree_view->priv->search_entry);
10427 }
10428
10429 /* Pops up the interactive search entry.  If keybinding is TRUE then the user
10430  * started this by typing the start_interactive_search keybinding.  Otherwise, it came from
10431  */
10432 static gboolean
10433 gtk_tree_view_real_start_interactive_search (GtkTreeView *tree_view,
10434                                              GdkDevice   *device,
10435                                              gboolean     keybinding)
10436 {
10437   /* We only start interactive search if we have focus or the columns
10438    * have focus.  If one of our children have focus, we don't want to
10439    * start the search.
10440    */
10441   GList *list;
10442   gboolean found_focus = FALSE;
10443   GtkWidgetClass *entry_parent_class;
10444
10445   if (!tree_view->priv->enable_search && !keybinding)
10446     return FALSE;
10447
10448   if (tree_view->priv->search_custom_entry_set)
10449     return FALSE;
10450
10451   if (tree_view->priv->search_window != NULL &&
10452       gtk_widget_get_visible (tree_view->priv->search_window))
10453     return TRUE;
10454
10455   for (list = tree_view->priv->columns; list; list = list->next)
10456     {
10457       GtkTreeViewColumn *column;
10458
10459       column = list->data;
10460       if (! column->visible)
10461         continue;
10462
10463       if (gtk_widget_has_focus (column->button))
10464         {
10465           found_focus = TRUE;
10466           break;
10467         }
10468     }
10469
10470   if (gtk_widget_has_focus (GTK_WIDGET (tree_view)))
10471     found_focus = TRUE;
10472
10473   if (!found_focus)
10474     return FALSE;
10475
10476   if (tree_view->priv->search_column < 0)
10477     return FALSE;
10478
10479   gtk_tree_view_ensure_interactive_directory (tree_view);
10480
10481   if (keybinding)
10482     gtk_entry_set_text (GTK_ENTRY (tree_view->priv->search_entry), "");
10483
10484   /* done, show it */
10485   tree_view->priv->search_position_func (tree_view, tree_view->priv->search_window, tree_view->priv->search_position_user_data);
10486   gtk_widget_show (tree_view->priv->search_window);
10487   if (tree_view->priv->search_entry_changed_id == 0)
10488     {
10489       tree_view->priv->search_entry_changed_id =
10490         g_signal_connect (tree_view->priv->search_entry, "changed",
10491                           G_CALLBACK (gtk_tree_view_search_init),
10492                           tree_view);
10493     }
10494
10495   tree_view->priv->typeselect_flush_timeout =
10496     gdk_threads_add_timeout (GTK_TREE_VIEW_SEARCH_DIALOG_TIMEOUT,
10497                    (GSourceFunc) gtk_tree_view_search_entry_flush_timeout,
10498                    tree_view);
10499
10500   /* Grab focus will select all the text.  We don't want that to happen, so we
10501    * call the parent instance and bypass the selection change.  This is probably
10502    * really non-kosher. */
10503   entry_parent_class = g_type_class_peek_parent (GTK_ENTRY_GET_CLASS (tree_view->priv->search_entry));
10504   (entry_parent_class->grab_focus) (tree_view->priv->search_entry);
10505
10506   /* send focus-in event */
10507   send_focus_change (tree_view->priv->search_entry, device, TRUE);
10508
10509   /* search first matching iter */
10510   gtk_tree_view_search_init (tree_view->priv->search_entry, tree_view);
10511
10512   return TRUE;
10513 }
10514
10515 static gboolean
10516 gtk_tree_view_start_interactive_search (GtkTreeView *tree_view)
10517 {
10518   return gtk_tree_view_real_start_interactive_search (tree_view,
10519                                                       gtk_get_current_event_device (),
10520                                                       TRUE);
10521 }
10522
10523 /* this function returns the new width of the column being resized given
10524  * the column and x position of the cursor; the x cursor position is passed
10525  * in as a pointer and automagicly corrected if it's beyond min/max limits
10526  */
10527 static gint
10528 gtk_tree_view_new_column_width (GtkTreeView *tree_view,
10529                                 gint       i,
10530                                 gint      *x)
10531 {
10532   GtkAllocation allocation;
10533   GtkTreeViewColumn *column;
10534   GtkRequisition button_req;
10535   gint width;
10536   gboolean rtl;
10537
10538   /* first translate the x position from widget->window
10539    * to clist->clist_window
10540    */
10541   rtl = (gtk_widget_get_direction (GTK_WIDGET (tree_view)) == GTK_TEXT_DIR_RTL);
10542   column = g_list_nth (tree_view->priv->columns, i)->data;
10543   gtk_widget_get_allocation (column->button, &allocation);
10544   width = rtl ? (allocation.x + allocation.width - *x) : (*x - allocation.x);
10545
10546   /* Clamp down the value */
10547   if (column->min_width == -1)
10548     {
10549       gtk_size_request_get_size (GTK_SIZE_REQUEST (column->button), &button_req, NULL);
10550       width = MAX (button_req.width, width);
10551     }
10552   else
10553     width = MAX (column->min_width,
10554                  width);
10555   if (column->max_width != -1)
10556     width = MIN (width, column->max_width);
10557
10558   *x = rtl ? (allocation.x + allocation.width - width) : (allocation.x + width);
10559
10560   return width;
10561 }
10562
10563
10564 /* FIXME this adjust_allocation is a big cut-and-paste from
10565  * GtkCList, needs to be some "official" way to do this
10566  * factored out.
10567  */
10568 typedef struct
10569 {
10570   GdkWindow *window;
10571   int dx;
10572   int dy;
10573 } ScrollData;
10574
10575 /* The window to which widget->window is relative */
10576 #define ALLOCATION_WINDOW(widget)               \
10577    (!gtk_widget_get_has_window (widget) ?                   \
10578     gtk_widget_get_window (widget) :                        \
10579     gdk_window_get_parent (gtk_widget_get_window (widget)))
10580
10581 static void
10582 adjust_allocation_recurse (GtkWidget *widget,
10583                            gpointer   data)
10584 {
10585   GtkAllocation allocation;
10586   ScrollData *scroll_data = data;
10587
10588   /* Need to really size allocate instead of just poking
10589    * into widget->allocation if the widget is not realized.
10590    * FIXME someone figure out why this was.
10591    */
10592   gtk_widget_get_allocation (widget, &allocation);
10593   if (!gtk_widget_get_realized (widget))
10594     {
10595       if (gtk_widget_get_visible (widget))
10596         {
10597           GdkRectangle tmp_rectangle = allocation;
10598           tmp_rectangle.x += scroll_data->dx;
10599           tmp_rectangle.y += scroll_data->dy;
10600
10601           gtk_widget_size_allocate (widget, &tmp_rectangle);
10602         }
10603     }
10604   else
10605     {
10606       if (ALLOCATION_WINDOW (widget) == scroll_data->window)
10607         {
10608           allocation.x += scroll_data->dx;
10609           allocation.y += scroll_data->dy;
10610           gtk_widget_set_allocation (widget, &allocation);
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: (transfer none): A #GtkAdjustment object, or %NULL
10924  *     if none is currently being 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: (transfer none): A #GtkAdjustment object, or %NULL
10964  *     if none is currently being 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   GtkAllocation allocation;
11030
11031   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
11032
11033   headers_visible = !! headers_visible;
11034
11035   if (GTK_TREE_VIEW_FLAG_SET (tree_view, GTK_TREE_VIEW_HEADERS_VISIBLE) == headers_visible)
11036     return;
11037
11038   if (headers_visible)
11039     GTK_TREE_VIEW_SET_FLAG (tree_view, GTK_TREE_VIEW_HEADERS_VISIBLE);
11040   else
11041     GTK_TREE_VIEW_UNSET_FLAG (tree_view, GTK_TREE_VIEW_HEADERS_VISIBLE);
11042
11043   if (gtk_widget_get_realized (GTK_WIDGET (tree_view)))
11044     {
11045       gdk_window_get_position (tree_view->priv->bin_window, &x, &y);
11046       if (headers_visible)
11047         {
11048           gtk_widget_get_allocation (GTK_WIDGET (tree_view), &allocation);
11049           gdk_window_move_resize (tree_view->priv->bin_window,
11050                                   x, y  + TREE_VIEW_HEADER_HEIGHT (tree_view),
11051                                   tree_view->priv->width, allocation.height -  + TREE_VIEW_HEADER_HEIGHT (tree_view));
11052
11053           if (gtk_widget_get_mapped (GTK_WIDGET (tree_view)))
11054             gtk_tree_view_map_buttons (tree_view);
11055         }
11056       else
11057         {
11058           gdk_window_move_resize (tree_view->priv->bin_window, x, y, tree_view->priv->width, tree_view->priv->height);
11059
11060           for (list = tree_view->priv->columns; list; list = list->next)
11061             {
11062               column = list->data;
11063               gtk_widget_unmap (column->button);
11064             }
11065           gdk_window_hide (tree_view->priv->header_window);
11066         }
11067     }
11068
11069   gtk_widget_get_allocation (GTK_WIDGET (tree_view), &allocation);
11070   tree_view->priv->vadjustment->page_size = allocation.height - TREE_VIEW_HEADER_HEIGHT (tree_view);
11071   tree_view->priv->vadjustment->page_increment = (allocation.height - TREE_VIEW_HEADER_HEIGHT (tree_view)) / 2;
11072   tree_view->priv->vadjustment->lower = 0;
11073   tree_view->priv->vadjustment->upper = tree_view->priv->height;
11074   gtk_adjustment_changed (tree_view->priv->vadjustment);
11075
11076   gtk_widget_queue_resize (GTK_WIDGET (tree_view));
11077
11078   g_object_notify (G_OBJECT (tree_view), "headers-visible");
11079 }
11080
11081 /**
11082  * gtk_tree_view_columns_autosize:
11083  * @tree_view: A #GtkTreeView.
11084  *
11085  * Resizes all columns to their optimal width. Only works after the
11086  * treeview has been realized.
11087  **/
11088 void
11089 gtk_tree_view_columns_autosize (GtkTreeView *tree_view)
11090 {
11091   gboolean dirty = FALSE;
11092   GList *list;
11093   GtkTreeViewColumn *column;
11094
11095   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
11096
11097   for (list = tree_view->priv->columns; list; list = list->next)
11098     {
11099       column = list->data;
11100       if (column->column_type == GTK_TREE_VIEW_COLUMN_AUTOSIZE)
11101         continue;
11102       _gtk_tree_view_column_cell_set_dirty (column, TRUE);
11103       dirty = TRUE;
11104     }
11105
11106   if (dirty)
11107     gtk_widget_queue_resize (GTK_WIDGET (tree_view));
11108 }
11109
11110 /**
11111  * gtk_tree_view_set_headers_clickable:
11112  * @tree_view: A #GtkTreeView.
11113  * @setting: %TRUE if the columns are clickable.
11114  *
11115  * Allow the column title buttons to be clicked.
11116  **/
11117 void
11118 gtk_tree_view_set_headers_clickable (GtkTreeView *tree_view,
11119                                      gboolean   setting)
11120 {
11121   GList *list;
11122
11123   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
11124
11125   for (list = tree_view->priv->columns; list; list = list->next)
11126     gtk_tree_view_column_set_clickable (GTK_TREE_VIEW_COLUMN (list->data), setting);
11127
11128   g_object_notify (G_OBJECT (tree_view), "headers-clickable");
11129 }
11130
11131
11132 /**
11133  * gtk_tree_view_get_headers_clickable:
11134  * @tree_view: A #GtkTreeView.
11135  *
11136  * Returns whether all header columns are clickable.
11137  *
11138  * Return value: %TRUE if all header columns are clickable, otherwise %FALSE
11139  *
11140  * Since: 2.10
11141  **/
11142 gboolean
11143 gtk_tree_view_get_headers_clickable (GtkTreeView *tree_view)
11144 {
11145   GList *list;
11146
11147   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), FALSE);
11148
11149   for (list = tree_view->priv->columns; list; list = list->next)
11150     if (!GTK_TREE_VIEW_COLUMN (list->data)->clickable)
11151       return FALSE;
11152
11153   return TRUE;
11154 }
11155
11156 /**
11157  * gtk_tree_view_set_rules_hint
11158  * @tree_view: a #GtkTreeView
11159  * @setting: %TRUE if the tree requires reading across rows
11160  *
11161  * This function tells GTK+ that the user interface for your
11162  * application requires users to read across tree rows and associate
11163  * cells with one another. By default, GTK+ will then render the tree
11164  * with alternating row colors. Do <emphasis>not</emphasis> use it
11165  * just because you prefer the appearance of the ruled tree; that's a
11166  * question for the theme. Some themes will draw tree rows in
11167  * alternating colors even when rules are turned off, and users who
11168  * prefer that appearance all the time can choose those themes. You
11169  * should call this function only as a <emphasis>semantic</emphasis>
11170  * hint to the theme engine that your tree makes alternating colors
11171  * useful from a functional standpoint (since it has lots of columns,
11172  * generally).
11173  *
11174  **/
11175 void
11176 gtk_tree_view_set_rules_hint (GtkTreeView  *tree_view,
11177                               gboolean      setting)
11178 {
11179   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
11180
11181   setting = setting != FALSE;
11182
11183   if (tree_view->priv->has_rules != setting)
11184     {
11185       tree_view->priv->has_rules = setting;
11186       gtk_widget_queue_draw (GTK_WIDGET (tree_view));
11187     }
11188
11189   g_object_notify (G_OBJECT (tree_view), "rules-hint");
11190 }
11191
11192 /**
11193  * gtk_tree_view_get_rules_hint
11194  * @tree_view: a #GtkTreeView
11195  *
11196  * Gets the setting set by gtk_tree_view_set_rules_hint().
11197  *
11198  * Return value: %TRUE if rules are useful for the user of this tree
11199  **/
11200 gboolean
11201 gtk_tree_view_get_rules_hint (GtkTreeView  *tree_view)
11202 {
11203   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), FALSE);
11204
11205   return tree_view->priv->has_rules;
11206 }
11207
11208 /* Public Column functions
11209  */
11210
11211 /**
11212  * gtk_tree_view_append_column:
11213  * @tree_view: A #GtkTreeView.
11214  * @column: The #GtkTreeViewColumn to add.
11215  *
11216  * Appends @column to the list of columns. If @tree_view has "fixed_height"
11217  * mode enabled, then @column must have its "sizing" property set to be
11218  * GTK_TREE_VIEW_COLUMN_FIXED.
11219  *
11220  * Return value: The number of columns in @tree_view after appending.
11221  **/
11222 gint
11223 gtk_tree_view_append_column (GtkTreeView       *tree_view,
11224                              GtkTreeViewColumn *column)
11225 {
11226   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), -1);
11227   g_return_val_if_fail (GTK_IS_TREE_VIEW_COLUMN (column), -1);
11228   g_return_val_if_fail (column->tree_view == NULL, -1);
11229
11230   return gtk_tree_view_insert_column (tree_view, column, -1);
11231 }
11232
11233
11234 /**
11235  * gtk_tree_view_remove_column:
11236  * @tree_view: A #GtkTreeView.
11237  * @column: The #GtkTreeViewColumn to remove.
11238  *
11239  * Removes @column from @tree_view.
11240  *
11241  * Return value: The number of columns in @tree_view after removing.
11242  **/
11243 gint
11244 gtk_tree_view_remove_column (GtkTreeView       *tree_view,
11245                              GtkTreeViewColumn *column)
11246 {
11247   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), -1);
11248   g_return_val_if_fail (GTK_IS_TREE_VIEW_COLUMN (column), -1);
11249   g_return_val_if_fail (column->tree_view == GTK_WIDGET (tree_view), -1);
11250
11251   if (tree_view->priv->focus_column == column)
11252     tree_view->priv->focus_column = NULL;
11253
11254   if (tree_view->priv->edited_column == column)
11255     {
11256       gtk_tree_view_stop_editing (tree_view, TRUE);
11257
11258       /* no need to, but just to be sure ... */
11259       tree_view->priv->edited_column = NULL;
11260     }
11261
11262   if (tree_view->priv->expander_column == column)
11263     tree_view->priv->expander_column = NULL;
11264
11265   g_signal_handlers_disconnect_by_func (column,
11266                                         G_CALLBACK (column_sizing_notify),
11267                                         tree_view);
11268
11269   _gtk_tree_view_column_unset_tree_view (column);
11270
11271   tree_view->priv->columns = g_list_remove (tree_view->priv->columns, column);
11272   tree_view->priv->n_columns--;
11273
11274   if (gtk_widget_get_realized (GTK_WIDGET (tree_view)))
11275     {
11276       GList *list;
11277
11278       _gtk_tree_view_column_unrealize_button (column);
11279       for (list = tree_view->priv->columns; list; list = list->next)
11280         {
11281           GtkTreeViewColumn *tmp_column;
11282
11283           tmp_column = GTK_TREE_VIEW_COLUMN (list->data);
11284           if (tmp_column->visible)
11285             _gtk_tree_view_column_cell_set_dirty (tmp_column, TRUE);
11286         }
11287
11288       if (tree_view->priv->n_columns == 0 &&
11289           gtk_tree_view_get_headers_visible (tree_view))
11290         gdk_window_hide (tree_view->priv->header_window);
11291
11292       gtk_widget_queue_resize (GTK_WIDGET (tree_view));
11293     }
11294
11295   g_object_unref (column);
11296   g_signal_emit (tree_view, tree_view_signals[COLUMNS_CHANGED], 0);
11297
11298   return tree_view->priv->n_columns;
11299 }
11300
11301 /**
11302  * gtk_tree_view_insert_column:
11303  * @tree_view: A #GtkTreeView.
11304  * @column: The #GtkTreeViewColumn to be inserted.
11305  * @position: The position to insert @column in.
11306  *
11307  * This inserts the @column into the @tree_view at @position.  If @position is
11308  * -1, then the column is inserted at the end. If @tree_view has
11309  * "fixed_height" mode enabled, then @column must have its "sizing" property
11310  * set to be GTK_TREE_VIEW_COLUMN_FIXED.
11311  *
11312  * Return value: The number of columns in @tree_view after insertion.
11313  **/
11314 gint
11315 gtk_tree_view_insert_column (GtkTreeView       *tree_view,
11316                              GtkTreeViewColumn *column,
11317                              gint               position)
11318 {
11319   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), -1);
11320   g_return_val_if_fail (GTK_IS_TREE_VIEW_COLUMN (column), -1);
11321   g_return_val_if_fail (column->tree_view == NULL, -1);
11322
11323   if (tree_view->priv->fixed_height_mode)
11324     g_return_val_if_fail (gtk_tree_view_column_get_sizing (column)
11325                           == GTK_TREE_VIEW_COLUMN_FIXED, -1);
11326
11327   g_object_ref_sink (column);
11328
11329   if (tree_view->priv->n_columns == 0 &&
11330       gtk_widget_get_realized (GTK_WIDGET (tree_view)) &&
11331       gtk_tree_view_get_headers_visible (tree_view))
11332     {
11333       gdk_window_show (tree_view->priv->header_window);
11334     }
11335
11336   g_signal_connect (column, "notify::sizing",
11337                     G_CALLBACK (column_sizing_notify), tree_view);
11338
11339   tree_view->priv->columns = g_list_insert (tree_view->priv->columns,
11340                                             column, position);
11341   tree_view->priv->n_columns++;
11342
11343   _gtk_tree_view_column_set_tree_view (column, tree_view);
11344
11345   if (gtk_widget_get_realized (GTK_WIDGET (tree_view)))
11346     {
11347       GList *list;
11348
11349       _gtk_tree_view_column_realize_button (column);
11350
11351       for (list = tree_view->priv->columns; list; list = list->next)
11352         {
11353           column = GTK_TREE_VIEW_COLUMN (list->data);
11354           if (column->visible)
11355             _gtk_tree_view_column_cell_set_dirty (column, TRUE);
11356         }
11357       gtk_widget_queue_resize (GTK_WIDGET (tree_view));
11358     }
11359
11360   g_signal_emit (tree_view, tree_view_signals[COLUMNS_CHANGED], 0);
11361
11362   return tree_view->priv->n_columns;
11363 }
11364
11365 /**
11366  * gtk_tree_view_insert_column_with_attributes:
11367  * @tree_view: A #GtkTreeView
11368  * @position: The position to insert the new column in.
11369  * @title: The title to set the header to.
11370  * @cell: The #GtkCellRenderer.
11371  * @Varargs: A %NULL-terminated list of attributes.
11372  *
11373  * Creates a new #GtkTreeViewColumn and inserts it into the @tree_view at
11374  * @position.  If @position is -1, then the newly created column is inserted at
11375  * the end.  The column is initialized with the attributes given. If @tree_view
11376  * has "fixed_height" mode enabled, then the new column will have its sizing
11377  * property set to be GTK_TREE_VIEW_COLUMN_FIXED.
11378  *
11379  * Return value: The number of columns in @tree_view after insertion.
11380  **/
11381 gint
11382 gtk_tree_view_insert_column_with_attributes (GtkTreeView     *tree_view,
11383                                              gint             position,
11384                                              const gchar     *title,
11385                                              GtkCellRenderer *cell,
11386                                              ...)
11387 {
11388   GtkTreeViewColumn *column;
11389   gchar *attribute;
11390   va_list args;
11391   gint column_id;
11392
11393   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), -1);
11394
11395   column = gtk_tree_view_column_new ();
11396   if (tree_view->priv->fixed_height_mode)
11397     gtk_tree_view_column_set_sizing (column, GTK_TREE_VIEW_COLUMN_FIXED);
11398
11399   gtk_tree_view_column_set_title (column, title);
11400   gtk_tree_view_column_pack_start (column, cell, TRUE);
11401
11402   va_start (args, cell);
11403
11404   attribute = va_arg (args, gchar *);
11405
11406   while (attribute != NULL)
11407     {
11408       column_id = va_arg (args, gint);
11409       gtk_tree_view_column_add_attribute (column, cell, attribute, column_id);
11410       attribute = va_arg (args, gchar *);
11411     }
11412
11413   va_end (args);
11414
11415   gtk_tree_view_insert_column (tree_view, column, position);
11416
11417   return tree_view->priv->n_columns;
11418 }
11419
11420 /**
11421  * gtk_tree_view_insert_column_with_data_func:
11422  * @tree_view: a #GtkTreeView
11423  * @position: Position to insert, -1 for append
11424  * @title: column title
11425  * @cell: cell renderer for column
11426  * @func: function to set attributes of cell renderer
11427  * @data: data for @func
11428  * @dnotify: destroy notifier for @data
11429  *
11430  * Convenience function that inserts a new column into the #GtkTreeView
11431  * with the given cell renderer and a #GtkCellDataFunc to set cell renderer
11432  * attributes (normally using data from the model). See also
11433  * gtk_tree_view_column_set_cell_data_func(), gtk_tree_view_column_pack_start().
11434  * If @tree_view has "fixed_height" mode enabled, then the new column will have its
11435  * "sizing" property set to be GTK_TREE_VIEW_COLUMN_FIXED.
11436  *
11437  * Return value: number of columns in the tree view post-insert
11438  **/
11439 gint
11440 gtk_tree_view_insert_column_with_data_func  (GtkTreeView               *tree_view,
11441                                              gint                       position,
11442                                              const gchar               *title,
11443                                              GtkCellRenderer           *cell,
11444                                              GtkTreeCellDataFunc        func,
11445                                              gpointer                   data,
11446                                              GDestroyNotify             dnotify)
11447 {
11448   GtkTreeViewColumn *column;
11449
11450   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), -1);
11451
11452   column = gtk_tree_view_column_new ();
11453   if (tree_view->priv->fixed_height_mode)
11454     gtk_tree_view_column_set_sizing (column, GTK_TREE_VIEW_COLUMN_FIXED);
11455
11456   gtk_tree_view_column_set_title (column, title);
11457   gtk_tree_view_column_pack_start (column, cell, TRUE);
11458   gtk_tree_view_column_set_cell_data_func (column, cell, func, data, dnotify);
11459
11460   gtk_tree_view_insert_column (tree_view, column, position);
11461
11462   return tree_view->priv->n_columns;
11463 }
11464
11465 /**
11466  * gtk_tree_view_get_column:
11467  * @tree_view: A #GtkTreeView.
11468  * @n: The position of the column, counting from 0.
11469  *
11470  * Gets the #GtkTreeViewColumn at the given position in the #tree_view.
11471  *
11472  * Return value: (transfer none): The #GtkTreeViewColumn, or %NULL if the
11473  *     position is outside the range of columns.
11474  **/
11475 GtkTreeViewColumn *
11476 gtk_tree_view_get_column (GtkTreeView *tree_view,
11477                           gint         n)
11478 {
11479   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), NULL);
11480
11481   if (n < 0 || n >= tree_view->priv->n_columns)
11482     return NULL;
11483
11484   if (tree_view->priv->columns == NULL)
11485     return NULL;
11486
11487   return GTK_TREE_VIEW_COLUMN (g_list_nth (tree_view->priv->columns, n)->data);
11488 }
11489
11490 /**
11491  * gtk_tree_view_get_columns:
11492  * @tree_view: A #GtkTreeView
11493  *
11494  * Returns a #GList of all the #GtkTreeViewColumn s currently in @tree_view.
11495  * The returned list must be freed with g_list_free ().
11496  *
11497  * Return value: (element-type GtkTreeViewColumn) (transfer container): A list of #GtkTreeViewColumn s
11498  **/
11499 GList *
11500 gtk_tree_view_get_columns (GtkTreeView *tree_view)
11501 {
11502   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), NULL);
11503
11504   return g_list_copy (tree_view->priv->columns);
11505 }
11506
11507 /**
11508  * gtk_tree_view_move_column_after:
11509  * @tree_view: A #GtkTreeView
11510  * @column: The #GtkTreeViewColumn to be moved.
11511  * @base_column: (allow-none): The #GtkTreeViewColumn to be moved relative to, or %NULL.
11512  *
11513  * Moves @column to be after to @base_column.  If @base_column is %NULL, then
11514  * @column is placed in the first position.
11515  **/
11516 void
11517 gtk_tree_view_move_column_after (GtkTreeView       *tree_view,
11518                                  GtkTreeViewColumn *column,
11519                                  GtkTreeViewColumn *base_column)
11520 {
11521   GList *column_list_el, *base_el = NULL;
11522
11523   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
11524
11525   column_list_el = g_list_find (tree_view->priv->columns, column);
11526   g_return_if_fail (column_list_el != NULL);
11527
11528   if (base_column)
11529     {
11530       base_el = g_list_find (tree_view->priv->columns, base_column);
11531       g_return_if_fail (base_el != NULL);
11532     }
11533
11534   if (column_list_el->prev == base_el)
11535     return;
11536
11537   tree_view->priv->columns = g_list_remove_link (tree_view->priv->columns, column_list_el);
11538   if (base_el == NULL)
11539     {
11540       column_list_el->prev = NULL;
11541       column_list_el->next = tree_view->priv->columns;
11542       if (column_list_el->next)
11543         column_list_el->next->prev = column_list_el;
11544       tree_view->priv->columns = column_list_el;
11545     }
11546   else
11547     {
11548       column_list_el->prev = base_el;
11549       column_list_el->next = base_el->next;
11550       if (column_list_el->next)
11551         column_list_el->next->prev = column_list_el;
11552       base_el->next = column_list_el;
11553     }
11554
11555   if (gtk_widget_get_realized (GTK_WIDGET (tree_view)))
11556     {
11557       gtk_widget_queue_resize (GTK_WIDGET (tree_view));
11558       gtk_tree_view_size_allocate_columns (GTK_WIDGET (tree_view), NULL);
11559     }
11560
11561   g_signal_emit (tree_view, tree_view_signals[COLUMNS_CHANGED], 0);
11562 }
11563
11564 /**
11565  * gtk_tree_view_set_expander_column:
11566  * @tree_view: A #GtkTreeView
11567  * @column: %NULL, or the column to draw the expander arrow at.
11568  *
11569  * Sets the column to draw the expander arrow at. It must be in @tree_view.
11570  * If @column is %NULL, then the expander arrow is always at the first
11571  * visible column.
11572  *
11573  * If you do not want expander arrow to appear in your tree, set the
11574  * expander column to a hidden column.
11575  **/
11576 void
11577 gtk_tree_view_set_expander_column (GtkTreeView       *tree_view,
11578                                    GtkTreeViewColumn *column)
11579 {
11580   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
11581   g_return_if_fail (column == NULL || GTK_IS_TREE_VIEW_COLUMN (column));
11582
11583   if (tree_view->priv->expander_column != column)
11584     {
11585       GList *list;
11586
11587       if (column)
11588         {
11589           /* Confirm that column is in tree_view */
11590           for (list = tree_view->priv->columns; list; list = list->next)
11591             if (list->data == column)
11592               break;
11593           g_return_if_fail (list != NULL);
11594         }
11595
11596       tree_view->priv->expander_column = column;
11597       g_object_notify (G_OBJECT (tree_view), "expander-column");
11598     }
11599 }
11600
11601 /**
11602  * gtk_tree_view_get_expander_column:
11603  * @tree_view: A #GtkTreeView
11604  *
11605  * Returns the column that is the current expander column.
11606  * This column has the expander arrow drawn next to it.
11607  *
11608  * Return value: (transfer none): The expander column.
11609  **/
11610 GtkTreeViewColumn *
11611 gtk_tree_view_get_expander_column (GtkTreeView *tree_view)
11612 {
11613   GList *list;
11614
11615   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), NULL);
11616
11617   for (list = tree_view->priv->columns; list; list = list->next)
11618     if (gtk_tree_view_is_expander_column (tree_view, GTK_TREE_VIEW_COLUMN (list->data)))
11619       return (GtkTreeViewColumn *) list->data;
11620   return NULL;
11621 }
11622
11623
11624 /**
11625  * gtk_tree_view_set_column_drag_function:
11626  * @tree_view: A #GtkTreeView.
11627  * @func: (allow-none): A function to determine which columns are reorderable, or %NULL.
11628  * @user_data: (allow-none): User data to be passed to @func, or %NULL
11629  * @destroy: (allow-none): Destroy notifier for @user_data, or %NULL
11630  *
11631  * Sets a user function for determining where a column may be dropped when
11632  * dragged.  This function is called on every column pair in turn at the
11633  * beginning of a column drag to determine where a drop can take place.  The
11634  * arguments passed to @func are: the @tree_view, the #GtkTreeViewColumn being
11635  * dragged, the two #GtkTreeViewColumn s determining the drop spot, and
11636  * @user_data.  If either of the #GtkTreeViewColumn arguments for the drop spot
11637  * are %NULL, then they indicate an edge.  If @func is set to be %NULL, then
11638  * @tree_view reverts to the default behavior of allowing all columns to be
11639  * dropped everywhere.
11640  **/
11641 void
11642 gtk_tree_view_set_column_drag_function (GtkTreeView               *tree_view,
11643                                         GtkTreeViewColumnDropFunc  func,
11644                                         gpointer                   user_data,
11645                                         GDestroyNotify             destroy)
11646 {
11647   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
11648
11649   if (tree_view->priv->column_drop_func_data_destroy)
11650     tree_view->priv->column_drop_func_data_destroy (tree_view->priv->column_drop_func_data);
11651
11652   tree_view->priv->column_drop_func = func;
11653   tree_view->priv->column_drop_func_data = user_data;
11654   tree_view->priv->column_drop_func_data_destroy = destroy;
11655 }
11656
11657 /**
11658  * gtk_tree_view_scroll_to_point:
11659  * @tree_view: a #GtkTreeView
11660  * @tree_x: X coordinate of new top-left pixel of visible area, or -1
11661  * @tree_y: Y coordinate of new top-left pixel of visible area, or -1
11662  *
11663  * Scrolls the tree view such that the top-left corner of the visible
11664  * area is @tree_x, @tree_y, where @tree_x and @tree_y are specified
11665  * in tree coordinates.  The @tree_view must be realized before
11666  * this function is called.  If it isn't, you probably want to be
11667  * using gtk_tree_view_scroll_to_cell().
11668  *
11669  * If either @tree_x or @tree_y are -1, then that direction isn't scrolled.
11670  **/
11671 void
11672 gtk_tree_view_scroll_to_point (GtkTreeView *tree_view,
11673                                gint         tree_x,
11674                                gint         tree_y)
11675 {
11676   GtkAdjustment *hadj;
11677   GtkAdjustment *vadj;
11678
11679   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
11680   g_return_if_fail (gtk_widget_get_realized (GTK_WIDGET (tree_view)));
11681
11682   hadj = tree_view->priv->hadjustment;
11683   vadj = tree_view->priv->vadjustment;
11684
11685   if (tree_x != -1)
11686     gtk_adjustment_set_value (hadj, tree_x);
11687   if (tree_y != -1)
11688     gtk_adjustment_set_value (vadj, tree_y);
11689 }
11690
11691 /**
11692  * gtk_tree_view_scroll_to_cell:
11693  * @tree_view: A #GtkTreeView.
11694  * @path: (allow-none): The path of the row to move to, or %NULL.
11695  * @column: (allow-none): The #GtkTreeViewColumn to move horizontally to, or %NULL.
11696  * @use_align: whether to use alignment arguments, or %FALSE.
11697  * @row_align: The vertical alignment of the row specified by @path.
11698  * @col_align: The horizontal alignment of the column specified by @column.
11699  *
11700  * Moves the alignments of @tree_view to the position specified by @column and
11701  * @path.  If @column is %NULL, then no horizontal scrolling occurs.  Likewise,
11702  * if @path is %NULL no vertical scrolling occurs.  At a minimum, one of @column
11703  * or @path need to be non-%NULL.  @row_align determines where the row is
11704  * placed, and @col_align determines where @column is placed.  Both are expected
11705  * to be between 0.0 and 1.0. 0.0 means left/top alignment, 1.0 means
11706  * right/bottom alignment, 0.5 means center.
11707  *
11708  * If @use_align is %FALSE, then the alignment arguments are ignored, and the
11709  * tree does the minimum amount of work to scroll the cell onto the screen.
11710  * This means that the cell will be scrolled to the edge closest to its current
11711  * position.  If the cell is currently visible on the screen, nothing is done.
11712  *
11713  * This function only works if the model is set, and @path is a valid row on the
11714  * model.  If the model changes before the @tree_view is realized, the centered
11715  * path will be modified to reflect this change.
11716  **/
11717 void
11718 gtk_tree_view_scroll_to_cell (GtkTreeView       *tree_view,
11719                               GtkTreePath       *path,
11720                               GtkTreeViewColumn *column,
11721                               gboolean           use_align,
11722                               gfloat             row_align,
11723                               gfloat             col_align)
11724 {
11725   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
11726   g_return_if_fail (tree_view->priv->model != NULL);
11727   g_return_if_fail (tree_view->priv->tree != NULL);
11728   g_return_if_fail (row_align >= 0.0 && row_align <= 1.0);
11729   g_return_if_fail (col_align >= 0.0 && col_align <= 1.0);
11730   g_return_if_fail (path != NULL || column != NULL);
11731
11732 #if 0
11733   g_print ("gtk_tree_view_scroll_to_cell:\npath: %s\ncolumn: %s\nuse_align: %d\nrow_align: %f\ncol_align: %f\n",
11734            gtk_tree_path_to_string (path), column?"non-null":"null", use_align, row_align, col_align);
11735 #endif
11736   row_align = CLAMP (row_align, 0.0, 1.0);
11737   col_align = CLAMP (col_align, 0.0, 1.0);
11738
11739
11740   /* Note: Despite the benefits that come from having one code path for the
11741    * scrolling code, we short-circuit validate_visible_area's immplementation as
11742    * it is much slower than just going to the point.
11743    */
11744   if (!gtk_widget_get_visible (GTK_WIDGET (tree_view)) ||
11745       !gtk_widget_get_realized (GTK_WIDGET (tree_view)) ||
11746       GTK_WIDGET_ALLOC_NEEDED (tree_view) ||
11747       GTK_RBNODE_FLAG_SET (tree_view->priv->tree->root, GTK_RBNODE_DESCENDANTS_INVALID))
11748     {
11749       if (tree_view->priv->scroll_to_path)
11750         gtk_tree_row_reference_free (tree_view->priv->scroll_to_path);
11751
11752       tree_view->priv->scroll_to_path = NULL;
11753       tree_view->priv->scroll_to_column = NULL;
11754
11755       if (path)
11756         tree_view->priv->scroll_to_path = gtk_tree_row_reference_new_proxy (G_OBJECT (tree_view), tree_view->priv->model, path);
11757       if (column)
11758         tree_view->priv->scroll_to_column = column;
11759       tree_view->priv->scroll_to_use_align = use_align;
11760       tree_view->priv->scroll_to_row_align = row_align;
11761       tree_view->priv->scroll_to_col_align = col_align;
11762
11763       install_presize_handler (tree_view);
11764     }
11765   else
11766     {
11767       GdkRectangle cell_rect;
11768       GdkRectangle vis_rect;
11769       gint dest_x, dest_y;
11770
11771       gtk_tree_view_get_background_area (tree_view, path, column, &cell_rect);
11772       gtk_tree_view_get_visible_rect (tree_view, &vis_rect);
11773
11774       cell_rect.y = TREE_WINDOW_Y_TO_RBTREE_Y (tree_view, cell_rect.y);
11775
11776       dest_x = vis_rect.x;
11777       dest_y = vis_rect.y;
11778
11779       if (column)
11780         {
11781           if (use_align)
11782             {
11783               dest_x = cell_rect.x - ((vis_rect.width - cell_rect.width) * col_align);
11784             }
11785           else
11786             {
11787               if (cell_rect.x < vis_rect.x)
11788                 dest_x = cell_rect.x;
11789               if (cell_rect.x + cell_rect.width > vis_rect.x + vis_rect.width)
11790                 dest_x = cell_rect.x + cell_rect.width - vis_rect.width;
11791             }
11792         }
11793
11794       if (path)
11795         {
11796           if (use_align)
11797             {
11798               dest_y = cell_rect.y - ((vis_rect.height - cell_rect.height) * row_align);
11799               dest_y = MAX (dest_y, 0);
11800             }
11801           else
11802             {
11803               if (cell_rect.y < vis_rect.y)
11804                 dest_y = cell_rect.y;
11805               if (cell_rect.y + cell_rect.height > vis_rect.y + vis_rect.height)
11806                 dest_y = cell_rect.y + cell_rect.height - vis_rect.height;
11807             }
11808         }
11809
11810       gtk_tree_view_scroll_to_point (tree_view, dest_x, dest_y);
11811     }
11812 }
11813
11814 /**
11815  * gtk_tree_view_row_activated:
11816  * @tree_view: A #GtkTreeView
11817  * @path: The #GtkTreePath to be activated.
11818  * @column: The #GtkTreeViewColumn to be activated.
11819  *
11820  * Activates the cell determined by @path and @column.
11821  **/
11822 void
11823 gtk_tree_view_row_activated (GtkTreeView       *tree_view,
11824                              GtkTreePath       *path,
11825                              GtkTreeViewColumn *column)
11826 {
11827   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
11828
11829   g_signal_emit (tree_view, tree_view_signals[ROW_ACTIVATED], 0, path, column);
11830 }
11831
11832
11833 static void
11834 gtk_tree_view_expand_all_emission_helper (GtkRBTree *tree,
11835                                           GtkRBNode *node,
11836                                           gpointer   data)
11837 {
11838   GtkTreeView *tree_view = data;
11839
11840   if ((node->flags & GTK_RBNODE_IS_PARENT) == GTK_RBNODE_IS_PARENT &&
11841       node->children)
11842     {
11843       GtkTreePath *path;
11844       GtkTreeIter iter;
11845
11846       path = _gtk_tree_view_find_path (tree_view, tree, node);
11847       gtk_tree_model_get_iter (tree_view->priv->model, &iter, path);
11848
11849       g_signal_emit (tree_view, tree_view_signals[ROW_EXPANDED], 0, &iter, path);
11850
11851       gtk_tree_path_free (path);
11852     }
11853
11854   if (node->children)
11855     _gtk_rbtree_traverse (node->children,
11856                           node->children->root,
11857                           G_PRE_ORDER,
11858                           gtk_tree_view_expand_all_emission_helper,
11859                           tree_view);
11860 }
11861
11862 /**
11863  * gtk_tree_view_expand_all:
11864  * @tree_view: A #GtkTreeView.
11865  *
11866  * Recursively expands all nodes in the @tree_view.
11867  **/
11868 void
11869 gtk_tree_view_expand_all (GtkTreeView *tree_view)
11870 {
11871   GtkTreePath *path;
11872   GtkRBTree *tree;
11873   GtkRBNode *node;
11874
11875   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
11876
11877   if (tree_view->priv->tree == NULL)
11878     return;
11879
11880   path = gtk_tree_path_new_first ();
11881   _gtk_tree_view_find_node (tree_view, path, &tree, &node);
11882
11883   while (node)
11884     {
11885       gtk_tree_view_real_expand_row (tree_view, path, tree, node, TRUE, FALSE);
11886       node = _gtk_rbtree_next (tree, node);
11887       gtk_tree_path_next (path);
11888   }
11889
11890   gtk_tree_path_free (path);
11891 }
11892
11893 /* Timeout to animate the expander during expands and collapses */
11894 static gboolean
11895 expand_collapse_timeout (gpointer data)
11896 {
11897   return do_expand_collapse (data);
11898 }
11899
11900 static void
11901 add_expand_collapse_timeout (GtkTreeView *tree_view,
11902                              GtkRBTree   *tree,
11903                              GtkRBNode   *node,
11904                              gboolean     expand)
11905 {
11906   if (tree_view->priv->expand_collapse_timeout != 0)
11907     return;
11908
11909   tree_view->priv->expand_collapse_timeout =
11910       gdk_threads_add_timeout (50, expand_collapse_timeout, tree_view);
11911   tree_view->priv->expanded_collapsed_tree = tree;
11912   tree_view->priv->expanded_collapsed_node = node;
11913
11914   if (expand)
11915     GTK_RBNODE_SET_FLAG (node, GTK_RBNODE_IS_SEMI_COLLAPSED);
11916   else
11917     GTK_RBNODE_SET_FLAG (node, GTK_RBNODE_IS_SEMI_EXPANDED);
11918 }
11919
11920 static void
11921 remove_expand_collapse_timeout (GtkTreeView *tree_view)
11922 {
11923   if (tree_view->priv->expand_collapse_timeout)
11924     {
11925       g_source_remove (tree_view->priv->expand_collapse_timeout);
11926       tree_view->priv->expand_collapse_timeout = 0;
11927     }
11928
11929   if (tree_view->priv->expanded_collapsed_node != NULL)
11930     {
11931       GTK_RBNODE_UNSET_FLAG (tree_view->priv->expanded_collapsed_node, GTK_RBNODE_IS_SEMI_EXPANDED);
11932       GTK_RBNODE_UNSET_FLAG (tree_view->priv->expanded_collapsed_node, GTK_RBNODE_IS_SEMI_COLLAPSED);
11933
11934       tree_view->priv->expanded_collapsed_node = NULL;
11935     }
11936 }
11937
11938 static void
11939 cancel_arrow_animation (GtkTreeView *tree_view)
11940 {
11941   if (tree_view->priv->expand_collapse_timeout)
11942     {
11943       while (do_expand_collapse (tree_view));
11944
11945       remove_expand_collapse_timeout (tree_view);
11946     }
11947 }
11948
11949 static gboolean
11950 do_expand_collapse (GtkTreeView *tree_view)
11951 {
11952   GtkRBNode *node;
11953   GtkRBTree *tree;
11954   gboolean expanding;
11955   gboolean redraw;
11956
11957   redraw = FALSE;
11958   expanding = TRUE;
11959
11960   node = tree_view->priv->expanded_collapsed_node;
11961   tree = tree_view->priv->expanded_collapsed_tree;
11962
11963   if (node->children == NULL)
11964     expanding = FALSE;
11965
11966   if (expanding)
11967     {
11968       if (GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_SEMI_COLLAPSED))
11969         {
11970           GTK_RBNODE_UNSET_FLAG (node, GTK_RBNODE_IS_SEMI_COLLAPSED);
11971           GTK_RBNODE_SET_FLAG (node, GTK_RBNODE_IS_SEMI_EXPANDED);
11972
11973           redraw = TRUE;
11974
11975         }
11976       else if (GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_SEMI_EXPANDED))
11977         {
11978           GTK_RBNODE_UNSET_FLAG (node, GTK_RBNODE_IS_SEMI_EXPANDED);
11979
11980           redraw = TRUE;
11981         }
11982     }
11983   else
11984     {
11985       if (GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_SEMI_EXPANDED))
11986         {
11987           GTK_RBNODE_UNSET_FLAG (node, GTK_RBNODE_IS_SEMI_EXPANDED);
11988           GTK_RBNODE_SET_FLAG (node, GTK_RBNODE_IS_SEMI_COLLAPSED);
11989
11990           redraw = TRUE;
11991         }
11992       else if (GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_SEMI_COLLAPSED))
11993         {
11994           GTK_RBNODE_UNSET_FLAG (node, GTK_RBNODE_IS_SEMI_COLLAPSED);
11995
11996           redraw = TRUE;
11997
11998         }
11999     }
12000
12001   if (redraw)
12002     {
12003       gtk_tree_view_queue_draw_arrow (tree_view, tree, node);
12004
12005       return TRUE;
12006     }
12007
12008   return FALSE;
12009 }
12010
12011 /**
12012  * gtk_tree_view_collapse_all:
12013  * @tree_view: A #GtkTreeView.
12014  *
12015  * Recursively collapses all visible, expanded nodes in @tree_view.
12016  **/
12017 void
12018 gtk_tree_view_collapse_all (GtkTreeView *tree_view)
12019 {
12020   GtkRBTree *tree;
12021   GtkRBNode *node;
12022   GtkTreePath *path;
12023   gint *indices;
12024
12025   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
12026
12027   if (tree_view->priv->tree == NULL)
12028     return;
12029
12030   path = gtk_tree_path_new ();
12031   gtk_tree_path_down (path);
12032   indices = gtk_tree_path_get_indices (path);
12033
12034   tree = tree_view->priv->tree;
12035   node = tree->root;
12036   while (node && node->left != tree->nil)
12037     node = node->left;
12038
12039   while (node)
12040     {
12041       if (node->children)
12042         gtk_tree_view_real_collapse_row (tree_view, path, tree, node, FALSE);
12043       indices[0]++;
12044       node = _gtk_rbtree_next (tree, node);
12045     }
12046
12047   gtk_tree_path_free (path);
12048 }
12049
12050 /**
12051  * gtk_tree_view_expand_to_path:
12052  * @tree_view: A #GtkTreeView.
12053  * @path: path to a row.
12054  *
12055  * Expands the row at @path. This will also expand all parent rows of
12056  * @path as necessary.
12057  *
12058  * Since: 2.2
12059  **/
12060 void
12061 gtk_tree_view_expand_to_path (GtkTreeView *tree_view,
12062                               GtkTreePath *path)
12063 {
12064   gint i, depth;
12065   gint *indices;
12066   GtkTreePath *tmp;
12067
12068   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
12069   g_return_if_fail (path != NULL);
12070
12071   depth = gtk_tree_path_get_depth (path);
12072   indices = gtk_tree_path_get_indices (path);
12073
12074   tmp = gtk_tree_path_new ();
12075   g_return_if_fail (tmp != NULL);
12076
12077   for (i = 0; i < depth; i++)
12078     {
12079       gtk_tree_path_append_index (tmp, indices[i]);
12080       gtk_tree_view_expand_row (tree_view, tmp, FALSE);
12081     }
12082
12083   gtk_tree_path_free (tmp);
12084 }
12085
12086 /* FIXME the bool return values for expand_row and collapse_row are
12087  * not analagous; they should be TRUE if the row had children and
12088  * was not already in the requested state.
12089  */
12090
12091
12092 static gboolean
12093 gtk_tree_view_real_expand_row (GtkTreeView *tree_view,
12094                                GtkTreePath *path,
12095                                GtkRBTree   *tree,
12096                                GtkRBNode   *node,
12097                                gboolean     open_all,
12098                                gboolean     animate)
12099 {
12100   GtkTreeIter iter;
12101   GtkTreeIter temp;
12102   gboolean expand;
12103
12104   if (animate)
12105     g_object_get (gtk_widget_get_settings (GTK_WIDGET (tree_view)),
12106                   "gtk-enable-animations", &animate,
12107                   NULL);
12108
12109   remove_auto_expand_timeout (tree_view);
12110
12111   if (node->children && !open_all)
12112     return FALSE;
12113
12114   if (! GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_PARENT))
12115     return FALSE;
12116
12117   gtk_tree_model_get_iter (tree_view->priv->model, &iter, path);
12118   if (! gtk_tree_model_iter_has_child (tree_view->priv->model, &iter))
12119     return FALSE;
12120
12121
12122    if (node->children && open_all)
12123     {
12124       gboolean retval = FALSE;
12125       GtkTreePath *tmp_path = gtk_tree_path_copy (path);
12126
12127       gtk_tree_path_append_index (tmp_path, 0);
12128       tree = node->children;
12129       node = tree->root;
12130       while (node->left != tree->nil)
12131         node = node->left;
12132       /* try to expand the children */
12133       do
12134         {
12135          gboolean t;
12136          t = gtk_tree_view_real_expand_row (tree_view, tmp_path, tree, node,
12137                                             TRUE, animate);
12138          if (t)
12139            retval = TRUE;
12140
12141          gtk_tree_path_next (tmp_path);
12142          node = _gtk_rbtree_next (tree, node);
12143        }
12144       while (node != NULL);
12145
12146       gtk_tree_path_free (tmp_path);
12147
12148       return retval;
12149     }
12150
12151   g_signal_emit (tree_view, tree_view_signals[TEST_EXPAND_ROW], 0, &iter, path, &expand);
12152
12153   if (!gtk_tree_model_iter_has_child (tree_view->priv->model, &iter))
12154     return FALSE;
12155
12156   if (expand)
12157     return FALSE;
12158
12159   node->children = _gtk_rbtree_new ();
12160   node->children->parent_tree = tree;
12161   node->children->parent_node = node;
12162
12163   gtk_tree_model_iter_children (tree_view->priv->model, &temp, &iter);
12164
12165   gtk_tree_view_build_tree (tree_view,
12166                             node->children,
12167                             &temp,
12168                             gtk_tree_path_get_depth (path) + 1,
12169                             open_all);
12170
12171   remove_expand_collapse_timeout (tree_view);
12172
12173   if (animate)
12174     add_expand_collapse_timeout (tree_view, tree, node, TRUE);
12175
12176   install_presize_handler (tree_view);
12177
12178   g_signal_emit (tree_view, tree_view_signals[ROW_EXPANDED], 0, &iter, path);
12179   if (open_all && node->children)
12180     {
12181       _gtk_rbtree_traverse (node->children,
12182                             node->children->root,
12183                             G_PRE_ORDER,
12184                             gtk_tree_view_expand_all_emission_helper,
12185                             tree_view);
12186     }
12187   return TRUE;
12188 }
12189
12190
12191 /**
12192  * gtk_tree_view_expand_row:
12193  * @tree_view: a #GtkTreeView
12194  * @path: path to a row
12195  * @open_all: whether to recursively expand, or just expand immediate children
12196  *
12197  * Opens the row so its children are visible.
12198  *
12199  * Return value: %TRUE if the row existed and had children
12200  **/
12201 gboolean
12202 gtk_tree_view_expand_row (GtkTreeView *tree_view,
12203                           GtkTreePath *path,
12204                           gboolean     open_all)
12205 {
12206   GtkRBTree *tree;
12207   GtkRBNode *node;
12208
12209   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), FALSE);
12210   g_return_val_if_fail (tree_view->priv->model != NULL, FALSE);
12211   g_return_val_if_fail (path != NULL, FALSE);
12212
12213   if (_gtk_tree_view_find_node (tree_view,
12214                                 path,
12215                                 &tree,
12216                                 &node))
12217     return FALSE;
12218
12219   if (tree != NULL)
12220     return gtk_tree_view_real_expand_row (tree_view, path, tree, node, open_all, FALSE);
12221   else
12222     return FALSE;
12223 }
12224
12225 static gboolean
12226 gtk_tree_view_real_collapse_row (GtkTreeView *tree_view,
12227                                  GtkTreePath *path,
12228                                  GtkRBTree   *tree,
12229                                  GtkRBNode   *node,
12230                                  gboolean     animate)
12231 {
12232   GtkTreeIter iter;
12233   GtkTreeIter children;
12234   gboolean collapse;
12235   gint x, y;
12236   GList *list;
12237   GdkWindow *child, *parent;
12238
12239   if (animate)
12240     g_object_get (gtk_widget_get_settings (GTK_WIDGET (tree_view)),
12241                   "gtk-enable-animations", &animate,
12242                   NULL);
12243
12244   remove_auto_expand_timeout (tree_view);
12245
12246   if (node->children == NULL)
12247     return FALSE;
12248
12249   gtk_tree_model_get_iter (tree_view->priv->model, &iter, path);
12250
12251   g_signal_emit (tree_view, tree_view_signals[TEST_COLLAPSE_ROW], 0, &iter, path, &collapse);
12252
12253   if (collapse)
12254     return FALSE;
12255
12256   /* if the prelighted node is a child of us, we want to unprelight it.  We have
12257    * a chance to prelight the correct node below */
12258
12259   if (tree_view->priv->prelight_tree)
12260     {
12261       GtkRBTree *parent_tree;
12262       GtkRBNode *parent_node;
12263
12264       parent_tree = tree_view->priv->prelight_tree->parent_tree;
12265       parent_node = tree_view->priv->prelight_tree->parent_node;
12266       while (parent_tree)
12267         {
12268           if (parent_tree == tree && parent_node == node)
12269             {
12270               ensure_unprelighted (tree_view);
12271               break;
12272             }
12273           parent_node = parent_tree->parent_node;
12274           parent_tree = parent_tree->parent_tree;
12275         }
12276     }
12277
12278   TREE_VIEW_INTERNAL_ASSERT (gtk_tree_model_iter_children (tree_view->priv->model, &children, &iter), FALSE);
12279
12280   for (list = tree_view->priv->columns; list; list = list->next)
12281     {
12282       GtkTreeViewColumn *column = list->data;
12283
12284       if (column->visible == FALSE)
12285         continue;
12286       if (gtk_tree_view_column_get_sizing (column) == GTK_TREE_VIEW_COLUMN_AUTOSIZE)
12287         _gtk_tree_view_column_cell_set_dirty (column, TRUE);
12288     }
12289
12290   if (tree_view->priv->destroy_count_func)
12291     {
12292       GtkTreePath *child_path;
12293       gint child_count = 0;
12294       child_path = gtk_tree_path_copy (path);
12295       gtk_tree_path_down (child_path);
12296       if (node->children)
12297         _gtk_rbtree_traverse (node->children, node->children->root, G_POST_ORDER, count_children_helper, &child_count);
12298       tree_view->priv->destroy_count_func (tree_view, child_path, child_count, tree_view->priv->destroy_count_data);
12299       gtk_tree_path_free (child_path);
12300     }
12301
12302   if (gtk_tree_row_reference_valid (tree_view->priv->cursor))
12303     {
12304       GtkTreePath *cursor_path = gtk_tree_row_reference_get_path (tree_view->priv->cursor);
12305
12306       if (gtk_tree_path_is_ancestor (path, cursor_path))
12307         {
12308           gtk_tree_row_reference_free (tree_view->priv->cursor);
12309           tree_view->priv->cursor = gtk_tree_row_reference_new_proxy (G_OBJECT (tree_view),
12310                                                                       tree_view->priv->model,
12311                                                                       path);
12312         }
12313       gtk_tree_path_free (cursor_path);
12314     }
12315
12316   if (gtk_tree_row_reference_valid (tree_view->priv->anchor))
12317     {
12318       GtkTreePath *anchor_path = gtk_tree_row_reference_get_path (tree_view->priv->anchor);
12319       if (gtk_tree_path_is_ancestor (path, anchor_path))
12320         {
12321           gtk_tree_row_reference_free (tree_view->priv->anchor);
12322           tree_view->priv->anchor = NULL;
12323         }
12324       gtk_tree_path_free (anchor_path);
12325     }
12326
12327   /* Stop a pending double click */
12328   tree_view->priv->last_button_x = -1;
12329   tree_view->priv->last_button_y = -1;
12330
12331   remove_expand_collapse_timeout (tree_view);
12332
12333   if (gtk_tree_view_unref_and_check_selection_tree (tree_view, node->children))
12334     {
12335       _gtk_rbtree_remove (node->children);
12336       g_signal_emit_by_name (tree_view->priv->selection, "changed");
12337     }
12338   else
12339     _gtk_rbtree_remove (node->children);
12340
12341   if (animate)
12342     add_expand_collapse_timeout (tree_view, tree, node, FALSE);
12343
12344   if (gtk_widget_get_mapped (GTK_WIDGET (tree_view)))
12345     {
12346       gtk_widget_queue_resize (GTK_WIDGET (tree_view));
12347     }
12348
12349   g_signal_emit (tree_view, tree_view_signals[ROW_COLLAPSED], 0, &iter, path);
12350
12351   if (gtk_widget_get_mapped (GTK_WIDGET (tree_view)))
12352     {
12353       /* now that we've collapsed all rows, we want to try to set the prelight
12354        * again. To do this, we fake a motion event and send it to ourselves. */
12355
12356       child = tree_view->priv->bin_window;
12357       parent = gdk_window_get_parent (child);
12358
12359       if (gdk_window_get_pointer (parent, &x, &y, NULL) == child)
12360         {
12361           GdkEventMotion event;
12362           gint child_x, child_y;
12363
12364           gdk_window_get_position (child, &child_x, &child_y);
12365
12366           event.window = tree_view->priv->bin_window;
12367           event.x = x - child_x;
12368           event.y = y - child_y;
12369
12370           /* despite the fact this isn't a real event, I'm almost positive it will
12371            * never trigger a drag event.  maybe_drag is the only function that uses
12372            * more than just event.x and event.y. */
12373           gtk_tree_view_motion_bin_window (GTK_WIDGET (tree_view), &event);
12374         }
12375     }
12376
12377   return TRUE;
12378 }
12379
12380 /**
12381  * gtk_tree_view_collapse_row:
12382  * @tree_view: a #GtkTreeView
12383  * @path: path to a row in the @tree_view
12384  *
12385  * Collapses a row (hides its child rows, if they exist).
12386  *
12387  * Return value: %TRUE if the row was collapsed.
12388  **/
12389 gboolean
12390 gtk_tree_view_collapse_row (GtkTreeView *tree_view,
12391                             GtkTreePath *path)
12392 {
12393   GtkRBTree *tree;
12394   GtkRBNode *node;
12395
12396   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), FALSE);
12397   g_return_val_if_fail (tree_view->priv->tree != NULL, FALSE);
12398   g_return_val_if_fail (path != NULL, FALSE);
12399
12400   if (_gtk_tree_view_find_node (tree_view,
12401                                 path,
12402                                 &tree,
12403                                 &node))
12404     return FALSE;
12405
12406   if (tree == NULL || node->children == NULL)
12407     return FALSE;
12408
12409   return gtk_tree_view_real_collapse_row (tree_view, path, tree, node, FALSE);
12410 }
12411
12412 static void
12413 gtk_tree_view_map_expanded_rows_helper (GtkTreeView            *tree_view,
12414                                         GtkRBTree              *tree,
12415                                         GtkTreePath            *path,
12416                                         GtkTreeViewMappingFunc  func,
12417                                         gpointer                user_data)
12418 {
12419   GtkRBNode *node;
12420
12421   if (tree == NULL || tree->root == NULL)
12422     return;
12423
12424   node = tree->root;
12425
12426   while (node && node->left != tree->nil)
12427     node = node->left;
12428
12429   while (node)
12430     {
12431       if (node->children)
12432         {
12433           (* func) (tree_view, path, user_data);
12434           gtk_tree_path_down (path);
12435           gtk_tree_view_map_expanded_rows_helper (tree_view, node->children, path, func, user_data);
12436           gtk_tree_path_up (path);
12437         }
12438       gtk_tree_path_next (path);
12439       node = _gtk_rbtree_next (tree, node);
12440     }
12441 }
12442
12443 /**
12444  * gtk_tree_view_map_expanded_rows:
12445  * @tree_view: A #GtkTreeView
12446  * @func: (scope call): A function to be called
12447  * @data: User data to be passed to the function.
12448  *
12449  * Calls @func on all expanded rows.
12450  **/
12451 void
12452 gtk_tree_view_map_expanded_rows (GtkTreeView            *tree_view,
12453                                  GtkTreeViewMappingFunc  func,
12454                                  gpointer                user_data)
12455 {
12456   GtkTreePath *path;
12457
12458   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
12459   g_return_if_fail (func != NULL);
12460
12461   path = gtk_tree_path_new_first ();
12462
12463   gtk_tree_view_map_expanded_rows_helper (tree_view,
12464                                           tree_view->priv->tree,
12465                                           path, func, user_data);
12466
12467   gtk_tree_path_free (path);
12468 }
12469
12470 /**
12471  * gtk_tree_view_row_expanded:
12472  * @tree_view: A #GtkTreeView.
12473  * @path: A #GtkTreePath to test expansion state.
12474  *
12475  * Returns %TRUE if the node pointed to by @path is expanded in @tree_view.
12476  *
12477  * Return value: %TRUE if #path is expanded.
12478  **/
12479 gboolean
12480 gtk_tree_view_row_expanded (GtkTreeView *tree_view,
12481                             GtkTreePath *path)
12482 {
12483   GtkRBTree *tree;
12484   GtkRBNode *node;
12485
12486   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), FALSE);
12487   g_return_val_if_fail (path != NULL, FALSE);
12488
12489   _gtk_tree_view_find_node (tree_view, path, &tree, &node);
12490
12491   if (node == NULL)
12492     return FALSE;
12493
12494   return (node->children != NULL);
12495 }
12496
12497 /**
12498  * gtk_tree_view_get_reorderable:
12499  * @tree_view: a #GtkTreeView
12500  *
12501  * Retrieves whether the user can reorder the tree via drag-and-drop. See
12502  * gtk_tree_view_set_reorderable().
12503  *
12504  * Return value: %TRUE if the tree can be reordered.
12505  **/
12506 gboolean
12507 gtk_tree_view_get_reorderable (GtkTreeView *tree_view)
12508 {
12509   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), FALSE);
12510
12511   return tree_view->priv->reorderable;
12512 }
12513
12514 /**
12515  * gtk_tree_view_set_reorderable:
12516  * @tree_view: A #GtkTreeView.
12517  * @reorderable: %TRUE, if the tree can be reordered.
12518  *
12519  * This function is a convenience function to allow you to reorder
12520  * models that support the #GtkDragSourceIface and the
12521  * #GtkDragDestIface.  Both #GtkTreeStore and #GtkListStore support
12522  * these.  If @reorderable is %TRUE, then the user can reorder the
12523  * model by dragging and dropping rows. The developer can listen to
12524  * these changes by connecting to the model's row_inserted and
12525  * row_deleted signals. The reordering is implemented by setting up
12526  * the tree view as a drag source and destination. Therefore, drag and
12527  * drop can not be used in a reorderable view for any other purpose.
12528  *
12529  * This function does not give you any degree of control over the order -- any
12530  * reordering is allowed.  If more control is needed, you should probably
12531  * handle drag and drop manually.
12532  **/
12533 void
12534 gtk_tree_view_set_reorderable (GtkTreeView *tree_view,
12535                                gboolean     reorderable)
12536 {
12537   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
12538
12539   reorderable = reorderable != FALSE;
12540
12541   if (tree_view->priv->reorderable == reorderable)
12542     return;
12543
12544   if (reorderable)
12545     {
12546       const GtkTargetEntry row_targets[] = {
12547         { "GTK_TREE_MODEL_ROW", GTK_TARGET_SAME_WIDGET, 0 }
12548       };
12549
12550       gtk_tree_view_enable_model_drag_source (tree_view,
12551                                               GDK_BUTTON1_MASK,
12552                                               row_targets,
12553                                               G_N_ELEMENTS (row_targets),
12554                                               GDK_ACTION_MOVE);
12555       gtk_tree_view_enable_model_drag_dest (tree_view,
12556                                             row_targets,
12557                                             G_N_ELEMENTS (row_targets),
12558                                             GDK_ACTION_MOVE);
12559     }
12560   else
12561     {
12562       gtk_tree_view_unset_rows_drag_source (tree_view);
12563       gtk_tree_view_unset_rows_drag_dest (tree_view);
12564     }
12565
12566   tree_view->priv->reorderable = reorderable;
12567
12568   g_object_notify (G_OBJECT (tree_view), "reorderable");
12569 }
12570
12571 static void
12572 gtk_tree_view_real_set_cursor (GtkTreeView     *tree_view,
12573                                GtkTreePath     *path,
12574                                gboolean         clear_and_select,
12575                                gboolean         clamp_node)
12576 {
12577   GtkRBTree *tree = NULL;
12578   GtkRBNode *node = NULL;
12579
12580   if (gtk_tree_row_reference_valid (tree_view->priv->cursor))
12581     {
12582       GtkTreePath *cursor_path;
12583       cursor_path = gtk_tree_row_reference_get_path (tree_view->priv->cursor);
12584       gtk_tree_view_queue_draw_path (tree_view, cursor_path, NULL);
12585       gtk_tree_path_free (cursor_path);
12586     }
12587
12588   gtk_tree_row_reference_free (tree_view->priv->cursor);
12589   tree_view->priv->cursor = NULL;
12590
12591   /* One cannot set the cursor on a separator.   Also, if
12592    * _gtk_tree_view_find_node returns TRUE, it ran out of tree
12593    * before finding the tree and node belonging to path.  The
12594    * path maps to a non-existing path and we will silently bail out.
12595    * We unset tree and node to avoid further processing.
12596    */
12597   if (!row_is_separator (tree_view, NULL, path)
12598       && _gtk_tree_view_find_node (tree_view, path, &tree, &node) == FALSE)
12599     {
12600       tree_view->priv->cursor =
12601           gtk_tree_row_reference_new_proxy (G_OBJECT (tree_view),
12602                                             tree_view->priv->model,
12603                                             path);
12604     }
12605   else
12606     {
12607       tree = NULL;
12608       node = NULL;
12609     }
12610
12611   if (tree != NULL)
12612     {
12613       GtkRBTree *new_tree = NULL;
12614       GtkRBNode *new_node = NULL;
12615
12616       if (clear_and_select && !tree_view->priv->ctrl_pressed)
12617         {
12618           GtkTreeSelectMode mode = 0;
12619
12620           if (tree_view->priv->ctrl_pressed)
12621             mode |= GTK_TREE_SELECT_MODE_TOGGLE;
12622           if (tree_view->priv->shift_pressed)
12623             mode |= GTK_TREE_SELECT_MODE_EXTEND;
12624
12625           _gtk_tree_selection_internal_select_node (tree_view->priv->selection,
12626                                                     node, tree, path, mode,
12627                                                     FALSE);
12628         }
12629
12630       /* We have to re-find tree and node here again, somebody might have
12631        * cleared the node or the whole tree in the GtkTreeSelection::changed
12632        * callback. If the nodes differ we bail out here.
12633        */
12634       _gtk_tree_view_find_node (tree_view, path, &new_tree, &new_node);
12635
12636       if (tree != new_tree || node != new_node)
12637         return;
12638
12639       if (clamp_node)
12640         {
12641           gtk_tree_view_clamp_node_visible (tree_view, tree, node);
12642           _gtk_tree_view_queue_draw_node (tree_view, tree, node, NULL);
12643         }
12644     }
12645
12646   g_signal_emit (tree_view, tree_view_signals[CURSOR_CHANGED], 0);
12647 }
12648
12649 /**
12650  * gtk_tree_view_get_cursor:
12651  * @tree_view: A #GtkTreeView
12652  * @path: (out) (allow-none): A pointer to be filled with the current cursor path, or %NULL
12653  * @focus_column: (out) (allow-none): A pointer to be filled with the current focus column, or %NULL
12654  *
12655  * Fills in @path and @focus_column with the current path and focus column.  If
12656  * the cursor isn't currently set, then *@path will be %NULL.  If no column
12657  * currently has focus, then *@focus_column will be %NULL.
12658  *
12659  * The returned #GtkTreePath must be freed with gtk_tree_path_free() when
12660  * you are done with it.
12661  **/
12662 void
12663 gtk_tree_view_get_cursor (GtkTreeView        *tree_view,
12664                           GtkTreePath       **path,
12665                           GtkTreeViewColumn **focus_column)
12666 {
12667   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
12668
12669   if (path)
12670     {
12671       if (gtk_tree_row_reference_valid (tree_view->priv->cursor))
12672         *path = gtk_tree_row_reference_get_path (tree_view->priv->cursor);
12673       else
12674         *path = NULL;
12675     }
12676
12677   if (focus_column)
12678     {
12679       *focus_column = tree_view->priv->focus_column;
12680     }
12681 }
12682
12683 /**
12684  * gtk_tree_view_set_cursor:
12685  * @tree_view: A #GtkTreeView
12686  * @path: A #GtkTreePath
12687  * @focus_column: (allow-none): A #GtkTreeViewColumn, or %NULL
12688  * @start_editing: %TRUE if the specified cell should start being edited.
12689  *
12690  * Sets the current keyboard focus to be at @path, and selects it.  This is
12691  * useful when you want to focus the user's attention on a particular row.  If
12692  * @focus_column is not %NULL, then focus is given to the column specified by
12693  * it. Additionally, if @focus_column is specified, and @start_editing is
12694  * %TRUE, then editing should be started in the specified cell.
12695  * This function is often followed by @gtk_widget_grab_focus (@tree_view)
12696  * in order to give keyboard focus to the widget.  Please note that editing
12697  * can only happen when the widget is realized.
12698  *
12699  * If @path is invalid for @model, the current cursor (if any) will be unset
12700  * and the function will return without failing.
12701  **/
12702 void
12703 gtk_tree_view_set_cursor (GtkTreeView       *tree_view,
12704                           GtkTreePath       *path,
12705                           GtkTreeViewColumn *focus_column,
12706                           gboolean           start_editing)
12707 {
12708   gtk_tree_view_set_cursor_on_cell (tree_view, path, focus_column,
12709                                     NULL, start_editing);
12710 }
12711
12712 /**
12713  * gtk_tree_view_set_cursor_on_cell:
12714  * @tree_view: A #GtkTreeView
12715  * @path: A #GtkTreePath
12716  * @focus_column: (allow-none): A #GtkTreeViewColumn, or %NULL
12717  * @focus_cell: (allow-none): A #GtkCellRenderer, or %NULL
12718  * @start_editing: %TRUE if the specified cell should start being edited.
12719  *
12720  * Sets the current keyboard focus to be at @path, and selects it.  This is
12721  * useful when you want to focus the user's attention on a particular row.  If
12722  * @focus_column is not %NULL, then focus is given to the column specified by
12723  * it. If @focus_column and @focus_cell are not %NULL, and @focus_column
12724  * contains 2 or more editable or activatable cells, then focus is given to
12725  * the cell specified by @focus_cell. Additionally, if @focus_column is
12726  * specified, and @start_editing is %TRUE, then editing should be started in
12727  * the specified cell.  This function is often followed by
12728  * @gtk_widget_grab_focus (@tree_view) in order to give keyboard focus to the
12729  * widget.  Please note that editing can only happen when the widget is
12730  * realized.
12731  *
12732  * If @path is invalid for @model, the current cursor (if any) will be unset
12733  * and the function will return without failing.
12734  *
12735  * Since: 2.2
12736  **/
12737 void
12738 gtk_tree_view_set_cursor_on_cell (GtkTreeView       *tree_view,
12739                                   GtkTreePath       *path,
12740                                   GtkTreeViewColumn *focus_column,
12741                                   GtkCellRenderer   *focus_cell,
12742                                   gboolean           start_editing)
12743 {
12744   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
12745   g_return_if_fail (path != NULL);
12746   g_return_if_fail (focus_column == NULL || GTK_IS_TREE_VIEW_COLUMN (focus_column));
12747
12748   if (!tree_view->priv->model)
12749     return;
12750
12751   if (focus_cell)
12752     {
12753       g_return_if_fail (focus_column);
12754       g_return_if_fail (GTK_IS_CELL_RENDERER (focus_cell));
12755     }
12756
12757   /* cancel the current editing, if it exists */
12758   if (tree_view->priv->edited_column &&
12759       tree_view->priv->edited_column->editable_widget)
12760     gtk_tree_view_stop_editing (tree_view, TRUE);
12761
12762   gtk_tree_view_real_set_cursor (tree_view, path, TRUE, TRUE);
12763
12764   if (focus_column && focus_column->visible)
12765     {
12766       GList *list;
12767       gboolean column_in_tree = FALSE;
12768
12769       for (list = tree_view->priv->columns; list; list = list->next)
12770         if (list->data == focus_column)
12771           {
12772             column_in_tree = TRUE;
12773             break;
12774           }
12775       g_return_if_fail (column_in_tree);
12776       tree_view->priv->focus_column = focus_column;
12777       if (focus_cell)
12778         gtk_tree_view_column_focus_cell (focus_column, focus_cell);
12779       if (start_editing)
12780         gtk_tree_view_start_editing (tree_view, path);
12781     }
12782 }
12783
12784 /**
12785  * gtk_tree_view_get_bin_window:
12786  * @tree_view: A #GtkTreeView
12787  *
12788  * Returns the window that @tree_view renders to.
12789  * This is used primarily to compare to <literal>event->window</literal>
12790  * to confirm that the event on @tree_view is on the right window.
12791  *
12792  * Return value: (transfer none): A #GdkWindow, or %NULL when @tree_view
12793  *     hasn't been realized yet
12794  **/
12795 GdkWindow *
12796 gtk_tree_view_get_bin_window (GtkTreeView *tree_view)
12797 {
12798   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), NULL);
12799
12800   return tree_view->priv->bin_window;
12801 }
12802
12803 /**
12804  * gtk_tree_view_get_path_at_pos:
12805  * @tree_view: A #GtkTreeView.
12806  * @x: The x position to be identified (relative to bin_window).
12807  * @y: The y position to be identified (relative to bin_window).
12808  * @path: (out) (allow-none): A pointer to a #GtkTreePath pointer to be filled in, or %NULL
12809  * @column: (out) (allow-none): A pointer to a #GtkTreeViewColumn pointer to be filled in, or %NULL
12810  * @cell_x: (out) (allow-none): A pointer where the X coordinate relative to the cell can be placed, or %NULL
12811  * @cell_y: (out) (allow-none): A pointer where the Y coordinate relative to the cell can be placed, or %NULL
12812  *
12813  * Finds the path at the point (@x, @y), relative to bin_window coordinates
12814  * (please see gtk_tree_view_get_bin_window()).
12815  * That is, @x and @y are relative to an events coordinates. @x and @y must
12816  * come from an event on the @tree_view only where <literal>event->window ==
12817  * gtk_tree_view_get_bin_window (<!-- -->)</literal>. It is primarily for
12818  * things like popup menus. If @path is non-%NULL, then it will be filled
12819  * with the #GtkTreePath at that point.  This path should be freed with
12820  * gtk_tree_path_free().  If @column is non-%NULL, then it will be filled
12821  * with the column at that point.  @cell_x and @cell_y return the coordinates
12822  * relative to the cell background (i.e. the @background_area passed to
12823  * gtk_cell_renderer_render()).  This function is only meaningful if
12824  * @tree_view is realized.  Therefore this function will always return %FALSE
12825  * if @tree_view is not realized or does not have a model.
12826  *
12827  * For converting widget coordinates (eg. the ones you get from
12828  * GtkWidget::query-tooltip), please see
12829  * gtk_tree_view_convert_widget_to_bin_window_coords().
12830  *
12831  * Return value: %TRUE if a row exists at that coordinate.
12832  **/
12833 gboolean
12834 gtk_tree_view_get_path_at_pos (GtkTreeView        *tree_view,
12835                                gint                x,
12836                                gint                y,
12837                                GtkTreePath       **path,
12838                                GtkTreeViewColumn **column,
12839                                gint               *cell_x,
12840                                gint               *cell_y)
12841 {
12842   GtkRBTree *tree;
12843   GtkRBNode *node;
12844   gint y_offset;
12845
12846   g_return_val_if_fail (tree_view != NULL, FALSE);
12847
12848   if (path)
12849     *path = NULL;
12850   if (column)
12851     *column = NULL;
12852
12853   if (tree_view->priv->bin_window == NULL)
12854     return FALSE;
12855
12856   if (tree_view->priv->tree == NULL)
12857     return FALSE;
12858
12859   if (x > tree_view->priv->hadjustment->upper)
12860     return FALSE;
12861
12862   if (x < 0 || y < 0)
12863     return FALSE;
12864
12865   if (column || cell_x)
12866     {
12867       GtkTreeViewColumn *tmp_column;
12868       GtkTreeViewColumn *last_column = NULL;
12869       GList *list;
12870       gint remaining_x = x;
12871       gboolean found = FALSE;
12872       gboolean rtl;
12873
12874       rtl = (gtk_widget_get_direction (GTK_WIDGET (tree_view)) == GTK_TEXT_DIR_RTL);
12875       for (list = (rtl ? g_list_last (tree_view->priv->columns) : g_list_first (tree_view->priv->columns));
12876            list;
12877            list = (rtl ? list->prev : list->next))
12878         {
12879           tmp_column = list->data;
12880
12881           if (tmp_column->visible == FALSE)
12882             continue;
12883
12884           last_column = tmp_column;
12885           if (remaining_x <= tmp_column->width)
12886             {
12887               found = TRUE;
12888
12889               if (column)
12890                 *column = tmp_column;
12891
12892               if (cell_x)
12893                 *cell_x = remaining_x;
12894
12895               break;
12896             }
12897           remaining_x -= tmp_column->width;
12898         }
12899
12900       /* If found is FALSE and there is a last_column, then it the remainder
12901        * space is in that area
12902        */
12903       if (!found)
12904         {
12905           if (last_column)
12906             {
12907               if (column)
12908                 *column = last_column;
12909
12910               if (cell_x)
12911                 *cell_x = last_column->width + remaining_x;
12912             }
12913           else
12914             {
12915               return FALSE;
12916             }
12917         }
12918     }
12919
12920   y_offset = _gtk_rbtree_find_offset (tree_view->priv->tree,
12921                                       TREE_WINDOW_Y_TO_RBTREE_Y (tree_view, y),
12922                                       &tree, &node);
12923
12924   if (tree == NULL)
12925     return FALSE;
12926
12927   if (cell_y)
12928     *cell_y = y_offset;
12929
12930   if (path)
12931     *path = _gtk_tree_view_find_path (tree_view, tree, node);
12932
12933   return TRUE;
12934 }
12935
12936
12937 /**
12938  * gtk_tree_view_get_cell_area:
12939  * @tree_view: a #GtkTreeView
12940  * @path: (allow-none): a #GtkTreePath for the row, or %NULL to get only horizontal coordinates
12941  * @column: (allow-none): a #GtkTreeViewColumn for the column, or %NULL to get only vertical coordinates
12942  * @rect: rectangle to fill with cell rect
12943  *
12944  * Fills the bounding rectangle in bin_window coordinates for the cell at the
12945  * row specified by @path and the column specified by @column.  If @path is
12946  * %NULL, or points to a path not currently displayed, the @y and @height fields
12947  * of the rectangle will be filled with 0. If @column is %NULL, the @x and @width
12948  * fields will be filled with 0.  The sum of all cell rects does not cover the
12949  * entire tree; there are extra pixels in between rows, for example. The
12950  * returned rectangle is equivalent to the @cell_area passed to
12951  * gtk_cell_renderer_render().  This function is only valid if @tree_view is
12952  * realized.
12953  **/
12954 void
12955 gtk_tree_view_get_cell_area (GtkTreeView        *tree_view,
12956                              GtkTreePath        *path,
12957                              GtkTreeViewColumn  *column,
12958                              GdkRectangle       *rect)
12959 {
12960   GtkAllocation allocation;
12961   GtkRBTree *tree = NULL;
12962   GtkRBNode *node = NULL;
12963   gint vertical_separator;
12964   gint horizontal_separator;
12965
12966   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
12967   g_return_if_fail (column == NULL || GTK_IS_TREE_VIEW_COLUMN (column));
12968   g_return_if_fail (rect != NULL);
12969   g_return_if_fail (!column || column->tree_view == (GtkWidget *) tree_view);
12970   g_return_if_fail (gtk_widget_get_realized (GTK_WIDGET (tree_view)));
12971
12972   gtk_widget_style_get (GTK_WIDGET (tree_view),
12973                         "vertical-separator", &vertical_separator,
12974                         "horizontal-separator", &horizontal_separator,
12975                         NULL);
12976
12977   rect->x = 0;
12978   rect->y = 0;
12979   rect->width = 0;
12980   rect->height = 0;
12981
12982   if (column)
12983     {
12984       gtk_widget_get_allocation (column->button, &allocation);
12985       rect->x = allocation.x + horizontal_separator/2;
12986       rect->width = allocation.width - horizontal_separator;
12987     }
12988
12989   if (path)
12990     {
12991       gboolean ret = _gtk_tree_view_find_node (tree_view, path, &tree, &node);
12992
12993       /* Get vertical coords */
12994       if ((!ret && tree == NULL) || ret)
12995         return;
12996
12997       rect->y = CELL_FIRST_PIXEL (tree_view, tree, node, vertical_separator);
12998       rect->height = MAX (CELL_HEIGHT (node, vertical_separator), tree_view->priv->expander_size - vertical_separator);
12999
13000       if (column &&
13001           gtk_tree_view_is_expander_column (tree_view, column))
13002         {
13003           gint depth = gtk_tree_path_get_depth (path);
13004           gboolean rtl;
13005
13006           rtl = gtk_widget_get_direction (GTK_WIDGET (tree_view)) == GTK_TEXT_DIR_RTL;
13007
13008           if (!rtl)
13009             rect->x += (depth - 1) * tree_view->priv->level_indentation;
13010           rect->width -= (depth - 1) * tree_view->priv->level_indentation;
13011
13012           if (TREE_VIEW_DRAW_EXPANDERS (tree_view))
13013             {
13014               if (!rtl)
13015                 rect->x += depth * tree_view->priv->expander_size;
13016               rect->width -= depth * tree_view->priv->expander_size;
13017             }
13018
13019           rect->width = MAX (rect->width, 0);
13020         }
13021     }
13022 }
13023
13024 /**
13025  * gtk_tree_view_get_background_area:
13026  * @tree_view: a #GtkTreeView
13027  * @path: (allow-none): a #GtkTreePath for the row, or %NULL to get only horizontal coordinates
13028  * @column: (allow-none): a #GtkTreeViewColumn for the column, or %NULL to get only vertical coordiantes
13029  * @rect: rectangle to fill with cell background rect
13030  *
13031  * Fills the bounding rectangle in bin_window coordinates for the cell at the
13032  * row specified by @path and the column specified by @column.  If @path is
13033  * %NULL, or points to a node not found in the tree, the @y and @height fields of
13034  * the rectangle will be filled with 0. If @column is %NULL, the @x and @width
13035  * fields will be filled with 0.  The returned rectangle is equivalent to the
13036  * @background_area passed to gtk_cell_renderer_render().  These background
13037  * areas tile to cover the entire bin window.  Contrast with the @cell_area,
13038  * returned by gtk_tree_view_get_cell_area(), which returns only the cell
13039  * itself, excluding surrounding borders and the tree expander area.
13040  *
13041  **/
13042 void
13043 gtk_tree_view_get_background_area (GtkTreeView        *tree_view,
13044                                    GtkTreePath        *path,
13045                                    GtkTreeViewColumn  *column,
13046                                    GdkRectangle       *rect)
13047 {
13048   GtkRBTree *tree = NULL;
13049   GtkRBNode *node = NULL;
13050
13051   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
13052   g_return_if_fail (column == NULL || GTK_IS_TREE_VIEW_COLUMN (column));
13053   g_return_if_fail (rect != NULL);
13054
13055   rect->x = 0;
13056   rect->y = 0;
13057   rect->width = 0;
13058   rect->height = 0;
13059
13060   if (path)
13061     {
13062       /* Get vertical coords */
13063
13064       if (!_gtk_tree_view_find_node (tree_view, path, &tree, &node) &&
13065           tree == NULL)
13066         return;
13067
13068       rect->y = BACKGROUND_FIRST_PIXEL (tree_view, tree, node);
13069
13070       rect->height = ROW_HEIGHT (tree_view, BACKGROUND_HEIGHT (node));
13071     }
13072
13073   if (column)
13074     {
13075       gint x2 = 0;
13076
13077       gtk_tree_view_get_background_xrange (tree_view, tree, column, &rect->x, &x2);
13078       rect->width = x2 - rect->x;
13079     }
13080 }
13081
13082 /**
13083  * gtk_tree_view_get_visible_rect:
13084  * @tree_view: a #GtkTreeView
13085  * @visible_rect: rectangle to fill
13086  *
13087  * Fills @visible_rect with the currently-visible region of the
13088  * buffer, in tree coordinates. Convert to bin_window coordinates with
13089  * gtk_tree_view_convert_tree_to_bin_window_coords().
13090  * Tree coordinates start at 0,0 for row 0 of the tree, and cover the entire
13091  * scrollable area of the tree.
13092  **/
13093 void
13094 gtk_tree_view_get_visible_rect (GtkTreeView  *tree_view,
13095                                 GdkRectangle *visible_rect)
13096 {
13097   GtkAllocation allocation;
13098   GtkWidget *widget;
13099
13100   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
13101
13102   widget = GTK_WIDGET (tree_view);
13103
13104   if (visible_rect)
13105     {
13106       gtk_widget_get_allocation (widget, &allocation);
13107       visible_rect->x = tree_view->priv->hadjustment->value;
13108       visible_rect->y = tree_view->priv->vadjustment->value;
13109       visible_rect->width = allocation.width;
13110       visible_rect->height = allocation.height - TREE_VIEW_HEADER_HEIGHT (tree_view);
13111     }
13112 }
13113
13114 /**
13115  * gtk_tree_view_convert_widget_to_tree_coords:
13116  * @tree_view: a #GtkTreeView
13117  * @wx: X coordinate relative to the widget
13118  * @wy: Y coordinate relative to the widget
13119  * @tx: return location for tree X coordinate
13120  * @ty: return location for tree Y coordinate
13121  *
13122  * Converts widget coordinates to coordinates for the
13123  * tree (the full scrollable area of the tree).
13124  *
13125  * Since: 2.12
13126  **/
13127 void
13128 gtk_tree_view_convert_widget_to_tree_coords (GtkTreeView *tree_view,
13129                                              gint         wx,
13130                                              gint         wy,
13131                                              gint        *tx,
13132                                              gint        *ty)
13133 {
13134   gint x, y;
13135
13136   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
13137
13138   gtk_tree_view_convert_widget_to_bin_window_coords (tree_view,
13139                                                      wx, wy,
13140                                                      &x, &y);
13141   gtk_tree_view_convert_bin_window_to_tree_coords (tree_view,
13142                                                    x, y,
13143                                                    tx, ty);
13144 }
13145
13146 /**
13147  * gtk_tree_view_convert_tree_to_widget_coords:
13148  * @tree_view: a #GtkTreeView
13149  * @tx: X coordinate relative to the tree
13150  * @ty: Y coordinate relative to the tree
13151  * @wx: return location for widget X coordinate
13152  * @wy: return location for widget Y coordinate
13153  *
13154  * Converts tree coordinates (coordinates in full scrollable area of the tree)
13155  * to widget coordinates.
13156  *
13157  * Since: 2.12
13158  **/
13159 void
13160 gtk_tree_view_convert_tree_to_widget_coords (GtkTreeView *tree_view,
13161                                              gint         tx,
13162                                              gint         ty,
13163                                              gint        *wx,
13164                                              gint        *wy)
13165 {
13166   gint x, y;
13167
13168   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
13169
13170   gtk_tree_view_convert_tree_to_bin_window_coords (tree_view,
13171                                                    tx, ty,
13172                                                    &x, &y);
13173   gtk_tree_view_convert_bin_window_to_widget_coords (tree_view,
13174                                                      x, y,
13175                                                      wx, wy);
13176 }
13177
13178 /**
13179  * gtk_tree_view_convert_widget_to_bin_window_coords:
13180  * @tree_view: a #GtkTreeView
13181  * @wx: X coordinate relative to the widget
13182  * @wy: Y coordinate relative to the widget
13183  * @bx: return location for bin_window X coordinate
13184  * @by: return location for bin_window Y coordinate
13185  *
13186  * Converts widget coordinates to coordinates for the bin_window
13187  * (see gtk_tree_view_get_bin_window()).
13188  *
13189  * Since: 2.12
13190  **/
13191 void
13192 gtk_tree_view_convert_widget_to_bin_window_coords (GtkTreeView *tree_view,
13193                                                    gint         wx,
13194                                                    gint         wy,
13195                                                    gint        *bx,
13196                                                    gint        *by)
13197 {
13198   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
13199
13200   if (bx)
13201     *bx = wx + tree_view->priv->hadjustment->value;
13202   if (by)
13203     *by = wy - TREE_VIEW_HEADER_HEIGHT (tree_view);
13204 }
13205
13206 /**
13207  * gtk_tree_view_convert_bin_window_to_widget_coords:
13208  * @tree_view: a #GtkTreeView
13209  * @bx: bin_window X coordinate
13210  * @by: bin_window Y coordinate
13211  * @wx: return location for widget X coordinate
13212  * @wy: return location for widget Y coordinate
13213  *
13214  * Converts bin_window coordinates (see gtk_tree_view_get_bin_window())
13215  * to widget relative coordinates.
13216  *
13217  * Since: 2.12
13218  **/
13219 void
13220 gtk_tree_view_convert_bin_window_to_widget_coords (GtkTreeView *tree_view,
13221                                                    gint         bx,
13222                                                    gint         by,
13223                                                    gint        *wx,
13224                                                    gint        *wy)
13225 {
13226   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
13227
13228   if (wx)
13229     *wx = bx - tree_view->priv->hadjustment->value;
13230   if (wy)
13231     *wy = by + TREE_VIEW_HEADER_HEIGHT (tree_view);
13232 }
13233
13234 /**
13235  * gtk_tree_view_convert_tree_to_bin_window_coords:
13236  * @tree_view: a #GtkTreeView
13237  * @tx: tree X coordinate
13238  * @ty: tree Y coordinate
13239  * @bx: return location for X coordinate relative to bin_window
13240  * @by: return location for Y coordinate relative to bin_window
13241  *
13242  * Converts tree coordinates (coordinates in full scrollable area of the tree)
13243  * to bin_window coordinates.
13244  *
13245  * Since: 2.12
13246  **/
13247 void
13248 gtk_tree_view_convert_tree_to_bin_window_coords (GtkTreeView *tree_view,
13249                                                  gint         tx,
13250                                                  gint         ty,
13251                                                  gint        *bx,
13252                                                  gint        *by)
13253 {
13254   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
13255
13256   if (bx)
13257     *bx = tx;
13258   if (by)
13259     *by = ty - tree_view->priv->dy;
13260 }
13261
13262 /**
13263  * gtk_tree_view_convert_bin_window_to_tree_coords:
13264  * @tree_view: a #GtkTreeView
13265  * @bx: X coordinate relative to bin_window
13266  * @by: Y coordinate relative to bin_window
13267  * @tx: return location for tree X coordinate
13268  * @ty: return location for tree Y coordinate
13269  *
13270  * Converts bin_window coordinates to coordinates for the
13271  * tree (the full scrollable area of the tree).
13272  *
13273  * Since: 2.12
13274  **/
13275 void
13276 gtk_tree_view_convert_bin_window_to_tree_coords (GtkTreeView *tree_view,
13277                                                  gint         bx,
13278                                                  gint         by,
13279                                                  gint        *tx,
13280                                                  gint        *ty)
13281 {
13282   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
13283
13284   if (tx)
13285     *tx = bx;
13286   if (ty)
13287     *ty = by + tree_view->priv->dy;
13288 }
13289
13290
13291
13292 /**
13293  * gtk_tree_view_get_visible_range:
13294  * @tree_view: A #GtkTreeView
13295  * @start_path: (allow-none): Return location for start of region, or %NULL.
13296  * @end_path: (allow-none): Return location for end of region, or %NULL.
13297  *
13298  * Sets @start_path and @end_path to be the first and last visible path.
13299  * Note that there may be invisible paths in between.
13300  *
13301  * The paths should be freed with gtk_tree_path_free() after use.
13302  *
13303  * Returns: %TRUE, if valid paths were placed in @start_path and @end_path.
13304  *
13305  * Since: 2.8
13306  **/
13307 gboolean
13308 gtk_tree_view_get_visible_range (GtkTreeView  *tree_view,
13309                                  GtkTreePath **start_path,
13310                                  GtkTreePath **end_path)
13311 {
13312   GtkRBTree *tree;
13313   GtkRBNode *node;
13314   gboolean retval;
13315
13316   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), FALSE);
13317
13318   if (!tree_view->priv->tree)
13319     return FALSE;
13320
13321   retval = TRUE;
13322
13323   if (start_path)
13324     {
13325       _gtk_rbtree_find_offset (tree_view->priv->tree,
13326                                TREE_WINDOW_Y_TO_RBTREE_Y (tree_view, 0),
13327                                &tree, &node);
13328       if (node)
13329         *start_path = _gtk_tree_view_find_path (tree_view, tree, node);
13330       else
13331         retval = FALSE;
13332     }
13333
13334   if (end_path)
13335     {
13336       gint y;
13337
13338       if (tree_view->priv->height < tree_view->priv->vadjustment->page_size)
13339         y = tree_view->priv->height - 1;
13340       else
13341         y = TREE_WINDOW_Y_TO_RBTREE_Y (tree_view, tree_view->priv->vadjustment->page_size) - 1;
13342
13343       _gtk_rbtree_find_offset (tree_view->priv->tree, y, &tree, &node);
13344       if (node)
13345         *end_path = _gtk_tree_view_find_path (tree_view, tree, node);
13346       else
13347         retval = FALSE;
13348     }
13349
13350   return retval;
13351 }
13352
13353 static void
13354 unset_reorderable (GtkTreeView *tree_view)
13355 {
13356   if (tree_view->priv->reorderable)
13357     {
13358       tree_view->priv->reorderable = FALSE;
13359       g_object_notify (G_OBJECT (tree_view), "reorderable");
13360     }
13361 }
13362
13363 /**
13364  * gtk_tree_view_enable_model_drag_source:
13365  * @tree_view: a #GtkTreeView
13366  * @start_button_mask: Mask of allowed buttons to start drag
13367  * @targets: the table of targets that the drag will support
13368  * @n_targets: the number of items in @targets
13369  * @actions: the bitmask of possible actions for a drag from this
13370  *    widget
13371  *
13372  * Turns @tree_view into a drag source for automatic DND. Calling this
13373  * method sets #GtkTreeView:reorderable to %FALSE.
13374  **/
13375 void
13376 gtk_tree_view_enable_model_drag_source (GtkTreeView              *tree_view,
13377                                         GdkModifierType           start_button_mask,
13378                                         const GtkTargetEntry     *targets,
13379                                         gint                      n_targets,
13380                                         GdkDragAction             actions)
13381 {
13382   TreeViewDragInfo *di;
13383
13384   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
13385
13386   gtk_drag_source_set (GTK_WIDGET (tree_view),
13387                        0,
13388                        targets,
13389                        n_targets,
13390                        actions);
13391
13392   di = ensure_info (tree_view);
13393
13394   di->start_button_mask = start_button_mask;
13395   di->source_actions = actions;
13396   di->source_set = TRUE;
13397
13398   unset_reorderable (tree_view);
13399 }
13400
13401 /**
13402  * gtk_tree_view_enable_model_drag_dest:
13403  * @tree_view: a #GtkTreeView
13404  * @targets: the table of targets that the drag will support
13405  * @n_targets: the number of items in @targets
13406  * @actions: the bitmask of possible actions for a drag from this
13407  *    widget
13408  *
13409  * Turns @tree_view into a drop destination for automatic DND. Calling
13410  * this method sets #GtkTreeView:reorderable to %FALSE.
13411  **/
13412 void
13413 gtk_tree_view_enable_model_drag_dest (GtkTreeView              *tree_view,
13414                                       const GtkTargetEntry     *targets,
13415                                       gint                      n_targets,
13416                                       GdkDragAction             actions)
13417 {
13418   TreeViewDragInfo *di;
13419
13420   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
13421
13422   gtk_drag_dest_set (GTK_WIDGET (tree_view),
13423                      0,
13424                      targets,
13425                      n_targets,
13426                      actions);
13427
13428   di = ensure_info (tree_view);
13429   di->dest_set = TRUE;
13430
13431   unset_reorderable (tree_view);
13432 }
13433
13434 /**
13435  * gtk_tree_view_unset_rows_drag_source:
13436  * @tree_view: a #GtkTreeView
13437  *
13438  * Undoes the effect of
13439  * gtk_tree_view_enable_model_drag_source(). Calling this method sets
13440  * #GtkTreeView:reorderable to %FALSE.
13441  **/
13442 void
13443 gtk_tree_view_unset_rows_drag_source (GtkTreeView *tree_view)
13444 {
13445   TreeViewDragInfo *di;
13446
13447   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
13448
13449   di = get_info (tree_view);
13450
13451   if (di)
13452     {
13453       if (di->source_set)
13454         {
13455           gtk_drag_source_unset (GTK_WIDGET (tree_view));
13456           di->source_set = FALSE;
13457         }
13458
13459       if (!di->dest_set && !di->source_set)
13460         remove_info (tree_view);
13461     }
13462
13463   unset_reorderable (tree_view);
13464 }
13465
13466 /**
13467  * gtk_tree_view_unset_rows_drag_dest:
13468  * @tree_view: a #GtkTreeView
13469  *
13470  * Undoes the effect of
13471  * gtk_tree_view_enable_model_drag_dest(). Calling this method sets
13472  * #GtkTreeView:reorderable to %FALSE.
13473  **/
13474 void
13475 gtk_tree_view_unset_rows_drag_dest (GtkTreeView *tree_view)
13476 {
13477   TreeViewDragInfo *di;
13478
13479   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
13480
13481   di = get_info (tree_view);
13482
13483   if (di)
13484     {
13485       if (di->dest_set)
13486         {
13487           gtk_drag_dest_unset (GTK_WIDGET (tree_view));
13488           di->dest_set = FALSE;
13489         }
13490
13491       if (!di->dest_set && !di->source_set)
13492         remove_info (tree_view);
13493     }
13494
13495   unset_reorderable (tree_view);
13496 }
13497
13498 /**
13499  * gtk_tree_view_set_drag_dest_row:
13500  * @tree_view: a #GtkTreeView
13501  * @path: (allow-none): The path of the row to highlight, or %NULL.
13502  * @pos: Specifies whether to drop before, after or into the row
13503  *
13504  * Sets the row that is highlighted for feedback.
13505  **/
13506 void
13507 gtk_tree_view_set_drag_dest_row (GtkTreeView            *tree_view,
13508                                  GtkTreePath            *path,
13509                                  GtkTreeViewDropPosition pos)
13510 {
13511   GtkTreePath *current_dest;
13512
13513   /* Note; this function is exported to allow a custom DND
13514    * implementation, so it can't touch TreeViewDragInfo
13515    */
13516
13517   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
13518
13519   current_dest = NULL;
13520
13521   if (tree_view->priv->drag_dest_row)
13522     {
13523       current_dest = gtk_tree_row_reference_get_path (tree_view->priv->drag_dest_row);
13524       gtk_tree_row_reference_free (tree_view->priv->drag_dest_row);
13525     }
13526
13527   /* special case a drop on an empty model */
13528   tree_view->priv->empty_view_drop = 0;
13529
13530   if (pos == GTK_TREE_VIEW_DROP_BEFORE && path
13531       && gtk_tree_path_get_depth (path) == 1
13532       && gtk_tree_path_get_indices (path)[0] == 0)
13533     {
13534       gint n_children;
13535
13536       n_children = gtk_tree_model_iter_n_children (tree_view->priv->model,
13537                                                    NULL);
13538
13539       if (!n_children)
13540         tree_view->priv->empty_view_drop = 1;
13541     }
13542
13543   tree_view->priv->drag_dest_pos = pos;
13544
13545   if (path)
13546     {
13547       tree_view->priv->drag_dest_row =
13548         gtk_tree_row_reference_new_proxy (G_OBJECT (tree_view), tree_view->priv->model, path);
13549       gtk_tree_view_queue_draw_path (tree_view, path, NULL);
13550     }
13551   else
13552     tree_view->priv->drag_dest_row = NULL;
13553
13554   if (current_dest)
13555     {
13556       GtkRBTree *tree, *new_tree;
13557       GtkRBNode *node, *new_node;
13558
13559       _gtk_tree_view_find_node (tree_view, current_dest, &tree, &node);
13560       _gtk_tree_view_queue_draw_node (tree_view, tree, node, NULL);
13561
13562       if (tree && node)
13563         {
13564           _gtk_rbtree_next_full (tree, node, &new_tree, &new_node);
13565           if (new_tree && new_node)
13566             _gtk_tree_view_queue_draw_node (tree_view, new_tree, new_node, NULL);
13567
13568           _gtk_rbtree_prev_full (tree, node, &new_tree, &new_node);
13569           if (new_tree && new_node)
13570             _gtk_tree_view_queue_draw_node (tree_view, new_tree, new_node, NULL);
13571         }
13572       gtk_tree_path_free (current_dest);
13573     }
13574 }
13575
13576 /**
13577  * gtk_tree_view_get_drag_dest_row:
13578  * @tree_view: a #GtkTreeView
13579  * @path: (out) (allow-none): Return location for the path of the highlighted row, or %NULL.
13580  * @pos: (out) (allow-none): Return location for the drop position, or %NULL
13581  *
13582  * Gets information about the row that is highlighted for feedback.
13583  **/
13584 void
13585 gtk_tree_view_get_drag_dest_row (GtkTreeView              *tree_view,
13586                                  GtkTreePath             **path,
13587                                  GtkTreeViewDropPosition  *pos)
13588 {
13589   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
13590
13591   if (path)
13592     {
13593       if (tree_view->priv->drag_dest_row)
13594         *path = gtk_tree_row_reference_get_path (tree_view->priv->drag_dest_row);
13595       else
13596         {
13597           if (tree_view->priv->empty_view_drop)
13598             *path = gtk_tree_path_new_from_indices (0, -1);
13599           else
13600             *path = NULL;
13601         }
13602     }
13603
13604   if (pos)
13605     *pos = tree_view->priv->drag_dest_pos;
13606 }
13607
13608 /**
13609  * gtk_tree_view_get_dest_row_at_pos:
13610  * @tree_view: a #GtkTreeView
13611  * @drag_x: the position to determine the destination row for
13612  * @drag_y: the position to determine the destination row for
13613  * @path: (out) (allow-none): Return location for the path of the highlighted row, or %NULL.
13614  * @pos: (out) (allow-none): Return location for the drop position, or %NULL
13615  *
13616  * Determines the destination row for a given position.  @drag_x and
13617  * @drag_y are expected to be in widget coordinates.  This function is only
13618  * meaningful if @tree_view is realized.  Therefore this function will always
13619  * return %FALSE if @tree_view is not realized or does not have a model.
13620  *
13621  * Return value: whether there is a row at the given position, %TRUE if this
13622  * is indeed the case.
13623  **/
13624 gboolean
13625 gtk_tree_view_get_dest_row_at_pos (GtkTreeView             *tree_view,
13626                                    gint                     drag_x,
13627                                    gint                     drag_y,
13628                                    GtkTreePath            **path,
13629                                    GtkTreeViewDropPosition *pos)
13630 {
13631   gint cell_y;
13632   gint bin_x, bin_y;
13633   gdouble offset_into_row;
13634   gdouble third;
13635   GdkRectangle cell;
13636   GtkTreeViewColumn *column = NULL;
13637   GtkTreePath *tmp_path = NULL;
13638
13639   /* Note; this function is exported to allow a custom DND
13640    * implementation, so it can't touch TreeViewDragInfo
13641    */
13642
13643   g_return_val_if_fail (tree_view != NULL, FALSE);
13644   g_return_val_if_fail (drag_x >= 0, FALSE);
13645   g_return_val_if_fail (drag_y >= 0, FALSE);
13646
13647   if (path)
13648     *path = NULL;
13649
13650   if (tree_view->priv->bin_window == NULL)
13651     return FALSE;
13652
13653   if (tree_view->priv->tree == NULL)
13654     return FALSE;
13655
13656   /* If in the top third of a row, we drop before that row; if
13657    * in the bottom third, drop after that row; if in the middle,
13658    * and the row has children, drop into the row.
13659    */
13660   gtk_tree_view_convert_widget_to_bin_window_coords (tree_view, drag_x, drag_y,
13661                                                      &bin_x, &bin_y);
13662
13663   if (!gtk_tree_view_get_path_at_pos (tree_view,
13664                                       bin_x,
13665                                       bin_y,
13666                                       &tmp_path,
13667                                       &column,
13668                                       NULL,
13669                                       &cell_y))
13670     return FALSE;
13671
13672   gtk_tree_view_get_background_area (tree_view, tmp_path, column,
13673                                      &cell);
13674
13675   offset_into_row = cell_y;
13676
13677   if (path)
13678     *path = tmp_path;
13679   else
13680     gtk_tree_path_free (tmp_path);
13681
13682   tmp_path = NULL;
13683
13684   third = cell.height / 3.0;
13685
13686   if (pos)
13687     {
13688       if (offset_into_row < third)
13689         {
13690           *pos = GTK_TREE_VIEW_DROP_BEFORE;
13691         }
13692       else if (offset_into_row < (cell.height / 2.0))
13693         {
13694           *pos = GTK_TREE_VIEW_DROP_INTO_OR_BEFORE;
13695         }
13696       else if (offset_into_row < third * 2.0)
13697         {
13698           *pos = GTK_TREE_VIEW_DROP_INTO_OR_AFTER;
13699         }
13700       else
13701         {
13702           *pos = GTK_TREE_VIEW_DROP_AFTER;
13703         }
13704     }
13705
13706   return TRUE;
13707 }
13708
13709
13710
13711 /* KEEP IN SYNC WITH GTK_TREE_VIEW_BIN_EXPOSE */
13712 /**
13713  * gtk_tree_view_create_row_drag_icon:
13714  * @tree_view: a #GtkTreeView
13715  * @path: a #GtkTreePath in @tree_view
13716  *
13717  * Creates a #cairo_surface_t representation of the row at @path.
13718  * This image is used for a drag icon.
13719  *
13720  * Return value: (transfer full): a newly-allocated surface of the drag icon.
13721  **/
13722 cairo_surface_t *
13723 gtk_tree_view_create_row_drag_icon (GtkTreeView  *tree_view,
13724                                     GtkTreePath  *path)
13725 {
13726   GtkTreeIter   iter;
13727   GtkRBTree    *tree;
13728   GtkRBNode    *node;
13729   GtkStyle *style;
13730   gint cell_offset;
13731   GList *list;
13732   GdkRectangle background_area;
13733   GtkWidget *widget;
13734   gint depth;
13735   /* start drawing inside the black outline */
13736   gint x = 1, y = 1;
13737   cairo_surface_t *surface;
13738   gint bin_window_width;
13739   gboolean is_separator = FALSE;
13740   gboolean rtl;
13741   cairo_t *cr;
13742
13743   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), NULL);
13744   g_return_val_if_fail (path != NULL, NULL);
13745
13746   widget = GTK_WIDGET (tree_view);
13747
13748   if (!gtk_widget_get_realized (widget))
13749     return NULL;
13750
13751   depth = gtk_tree_path_get_depth (path);
13752
13753   _gtk_tree_view_find_node (tree_view,
13754                             path,
13755                             &tree,
13756                             &node);
13757
13758   if (tree == NULL)
13759     return NULL;
13760
13761   if (!gtk_tree_model_get_iter (tree_view->priv->model,
13762                                 &iter,
13763                                 path))
13764     return NULL;
13765
13766   style = gtk_widget_get_style (widget);
13767
13768   is_separator = row_is_separator (tree_view, &iter, NULL);
13769
13770   cell_offset = x;
13771
13772   background_area.y = y;
13773   background_area.height = ROW_HEIGHT (tree_view, BACKGROUND_HEIGHT (node));
13774
13775   gdk_drawable_get_size (tree_view->priv->bin_window,
13776                          &bin_window_width, NULL);
13777
13778   surface = gdk_window_create_similar_surface (tree_view->priv->bin_window,
13779                                                CAIRO_CONTENT_COLOR,
13780                                                bin_window_width + 2,
13781                                                background_area.height + 2);
13782
13783   cr = cairo_create (surface);
13784   gdk_cairo_set_source_color (cr, &style->base [gtk_widget_get_state (widget)]);
13785   cairo_paint (cr);
13786
13787   rtl = gtk_widget_get_direction (GTK_WIDGET (tree_view)) == GTK_TEXT_DIR_RTL;
13788
13789   for (list = (rtl ? g_list_last (tree_view->priv->columns) : g_list_first (tree_view->priv->columns));
13790       list;
13791       list = (rtl ? list->prev : list->next))
13792     {
13793       GtkTreeViewColumn *column = list->data;
13794       GdkRectangle cell_area;
13795       gint vertical_separator;
13796
13797       if (!column->visible)
13798         continue;
13799
13800       gtk_tree_view_column_cell_set_cell_data (column, tree_view->priv->model, &iter,
13801                                                GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_PARENT),
13802                                                node->children?TRUE:FALSE);
13803
13804       background_area.x = cell_offset;
13805       background_area.width = column->width;
13806
13807       gtk_widget_style_get (widget,
13808                             "vertical-separator", &vertical_separator,
13809                             NULL);
13810
13811       cell_area = background_area;
13812
13813       cell_area.y += vertical_separator / 2;
13814       cell_area.height -= vertical_separator;
13815
13816       if (gtk_tree_view_is_expander_column (tree_view, column))
13817         {
13818           if (!rtl)
13819             cell_area.x += (depth - 1) * tree_view->priv->level_indentation;
13820           cell_area.width -= (depth - 1) * tree_view->priv->level_indentation;
13821
13822           if (TREE_VIEW_DRAW_EXPANDERS(tree_view))
13823             {
13824               if (!rtl)
13825                 cell_area.x += depth * tree_view->priv->expander_size;
13826               cell_area.width -= depth * tree_view->priv->expander_size;
13827             }
13828         }
13829
13830       if (gtk_tree_view_column_cell_is_visible (column))
13831         {
13832           if (is_separator)
13833             gtk_cairo_paint_hline (style,
13834                                    cr,
13835                                    GTK_STATE_NORMAL,
13836                                    widget,
13837                                    NULL,
13838                                    cell_area.x,
13839                                    cell_area.x + cell_area.width,
13840                                    cell_area.y + cell_area.height / 2);
13841           else
13842             _gtk_tree_view_column_cell_render (column,
13843                                                cr,
13844                                                &background_area,
13845                                                &cell_area,
13846                                                0);
13847         }
13848       cell_offset += column->width;
13849     }
13850
13851   cairo_set_source_rgb (cr, 0, 0, 0);
13852   cairo_rectangle (cr,
13853                    0.5, 0.5,
13854                    bin_window_width + 1,
13855                    background_area.height + 1);
13856   cairo_set_line_width (cr, 1.0);
13857   cairo_stroke (cr);
13858
13859   cairo_destroy (cr);
13860
13861   cairo_surface_set_device_offset (surface, 2, 2);
13862
13863   return surface;
13864 }
13865
13866
13867 /**
13868  * gtk_tree_view_set_destroy_count_func:
13869  * @tree_view: A #GtkTreeView
13870  * @func: (allow-none): Function to be called when a view row is destroyed, or %NULL
13871  * @data: (allow-none): User data to be passed to @func, or %NULL
13872  * @destroy: (allow-none): Destroy notifier for @data, or %NULL
13873  *
13874  * This function should almost never be used.  It is meant for private use by
13875  * ATK for determining the number of visible children that are removed when the
13876  * user collapses a row, or a row is deleted.
13877  **/
13878 void
13879 gtk_tree_view_set_destroy_count_func (GtkTreeView             *tree_view,
13880                                       GtkTreeDestroyCountFunc  func,
13881                                       gpointer                 data,
13882                                       GDestroyNotify           destroy)
13883 {
13884   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
13885
13886   if (tree_view->priv->destroy_count_destroy)
13887     tree_view->priv->destroy_count_destroy (tree_view->priv->destroy_count_data);
13888
13889   tree_view->priv->destroy_count_func = func;
13890   tree_view->priv->destroy_count_data = data;
13891   tree_view->priv->destroy_count_destroy = destroy;
13892 }
13893
13894
13895 /*
13896  * Interactive search
13897  */
13898
13899 /**
13900  * gtk_tree_view_set_enable_search:
13901  * @tree_view: A #GtkTreeView
13902  * @enable_search: %TRUE, if the user can search interactively
13903  *
13904  * If @enable_search is set, then the user can type in text to search through
13905  * the tree interactively (this is sometimes called "typeahead find").
13906  *
13907  * Note that even if this is %FALSE, the user can still initiate a search
13908  * using the "start-interactive-search" key binding.
13909  */
13910 void
13911 gtk_tree_view_set_enable_search (GtkTreeView *tree_view,
13912                                  gboolean     enable_search)
13913 {
13914   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
13915
13916   enable_search = !!enable_search;
13917
13918   if (tree_view->priv->enable_search != enable_search)
13919     {
13920        tree_view->priv->enable_search = enable_search;
13921        g_object_notify (G_OBJECT (tree_view), "enable-search");
13922     }
13923 }
13924
13925 /**
13926  * gtk_tree_view_get_enable_search:
13927  * @tree_view: A #GtkTreeView
13928  *
13929  * Returns whether or not the tree allows to start interactive searching
13930  * by typing in text.
13931  *
13932  * Return value: whether or not to let the user search interactively
13933  */
13934 gboolean
13935 gtk_tree_view_get_enable_search (GtkTreeView *tree_view)
13936 {
13937   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), FALSE);
13938
13939   return tree_view->priv->enable_search;
13940 }
13941
13942
13943 /**
13944  * gtk_tree_view_get_search_column:
13945  * @tree_view: A #GtkTreeView
13946  *
13947  * Gets the column searched on by the interactive search code.
13948  *
13949  * Return value: the column the interactive search code searches in.
13950  */
13951 gint
13952 gtk_tree_view_get_search_column (GtkTreeView *tree_view)
13953 {
13954   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), -1);
13955
13956   return (tree_view->priv->search_column);
13957 }
13958
13959 /**
13960  * gtk_tree_view_set_search_column:
13961  * @tree_view: A #GtkTreeView
13962  * @column: the column of the model to search in, or -1 to disable searching
13963  *
13964  * Sets @column as the column where the interactive search code should
13965  * search in for the current model.
13966  *
13967  * If the search column is set, users can use the "start-interactive-search"
13968  * key binding to bring up search popup. The enable-search property controls
13969  * whether simply typing text will also start an interactive search.
13970  *
13971  * Note that @column refers to a column of the current model. The search
13972  * column is reset to -1 when the model is changed.
13973  */
13974 void
13975 gtk_tree_view_set_search_column (GtkTreeView *tree_view,
13976                                  gint         column)
13977 {
13978   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
13979   g_return_if_fail (column >= -1);
13980
13981   if (tree_view->priv->search_column == column)
13982     return;
13983
13984   tree_view->priv->search_column = column;
13985   g_object_notify (G_OBJECT (tree_view), "search-column");
13986 }
13987
13988 /**
13989  * gtk_tree_view_get_search_equal_func:
13990  * @tree_view: A #GtkTreeView
13991  *
13992  * Returns the compare function currently in use.
13993  *
13994  * Return value: the currently used compare function for the search code.
13995  */
13996
13997 GtkTreeViewSearchEqualFunc
13998 gtk_tree_view_get_search_equal_func (GtkTreeView *tree_view)
13999 {
14000   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), NULL);
14001
14002   return tree_view->priv->search_equal_func;
14003 }
14004
14005 /**
14006  * gtk_tree_view_set_search_equal_func:
14007  * @tree_view: A #GtkTreeView
14008  * @search_equal_func: the compare function to use during the search
14009  * @search_user_data: (allow-none): user data to pass to @search_equal_func, or %NULL
14010  * @search_destroy: (allow-none): Destroy notifier for @search_user_data, or %NULL
14011  *
14012  * Sets the compare function for the interactive search capabilities; note
14013  * that somewhat like strcmp() returning 0 for equality
14014  * #GtkTreeViewSearchEqualFunc returns %FALSE on matches.
14015  **/
14016 void
14017 gtk_tree_view_set_search_equal_func (GtkTreeView                *tree_view,
14018                                      GtkTreeViewSearchEqualFunc  search_equal_func,
14019                                      gpointer                    search_user_data,
14020                                      GDestroyNotify              search_destroy)
14021 {
14022   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
14023   g_return_if_fail (search_equal_func != NULL);
14024
14025   if (tree_view->priv->search_destroy)
14026     tree_view->priv->search_destroy (tree_view->priv->search_user_data);
14027
14028   tree_view->priv->search_equal_func = search_equal_func;
14029   tree_view->priv->search_user_data = search_user_data;
14030   tree_view->priv->search_destroy = search_destroy;
14031   if (tree_view->priv->search_equal_func == NULL)
14032     tree_view->priv->search_equal_func = gtk_tree_view_search_equal_func;
14033 }
14034
14035 /**
14036  * gtk_tree_view_get_search_entry:
14037  * @tree_view: A #GtkTreeView
14038  *
14039  * Returns the #GtkEntry which is currently in use as interactive search
14040  * entry for @tree_view.  In case the built-in entry is being used, %NULL
14041  * will be returned.
14042  *
14043  * Return value: (transfer none): the entry currently in use as search entry.
14044  *
14045  * Since: 2.10
14046  */
14047 GtkEntry *
14048 gtk_tree_view_get_search_entry (GtkTreeView *tree_view)
14049 {
14050   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), NULL);
14051
14052   if (tree_view->priv->search_custom_entry_set)
14053     return GTK_ENTRY (tree_view->priv->search_entry);
14054
14055   return NULL;
14056 }
14057
14058 /**
14059  * gtk_tree_view_set_search_entry:
14060  * @tree_view: A #GtkTreeView
14061  * @entry: (allow-none): the entry the interactive search code of @tree_view should use or %NULL
14062  *
14063  * Sets the entry which the interactive search code will use for this
14064  * @tree_view.  This is useful when you want to provide a search entry
14065  * in our interface at all time at a fixed position.  Passing %NULL for
14066  * @entry will make the interactive search code use the built-in popup
14067  * entry again.
14068  *
14069  * Since: 2.10
14070  */
14071 void
14072 gtk_tree_view_set_search_entry (GtkTreeView *tree_view,
14073                                 GtkEntry    *entry)
14074 {
14075   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
14076   g_return_if_fail (entry == NULL || GTK_IS_ENTRY (entry));
14077
14078   if (tree_view->priv->search_custom_entry_set)
14079     {
14080       if (tree_view->priv->search_entry_changed_id)
14081         {
14082           g_signal_handler_disconnect (tree_view->priv->search_entry,
14083                                        tree_view->priv->search_entry_changed_id);
14084           tree_view->priv->search_entry_changed_id = 0;
14085         }
14086       g_signal_handlers_disconnect_by_func (tree_view->priv->search_entry,
14087                                             G_CALLBACK (gtk_tree_view_search_key_press_event),
14088                                             tree_view);
14089
14090       g_object_unref (tree_view->priv->search_entry);
14091     }
14092   else if (tree_view->priv->search_window)
14093     {
14094       gtk_widget_destroy (tree_view->priv->search_window);
14095
14096       tree_view->priv->search_window = NULL;
14097     }
14098
14099   if (entry)
14100     {
14101       tree_view->priv->search_entry = g_object_ref (entry);
14102       tree_view->priv->search_custom_entry_set = TRUE;
14103
14104       if (tree_view->priv->search_entry_changed_id == 0)
14105         {
14106           tree_view->priv->search_entry_changed_id =
14107             g_signal_connect (tree_view->priv->search_entry, "changed",
14108                               G_CALLBACK (gtk_tree_view_search_init),
14109                               tree_view);
14110         }
14111
14112         g_signal_connect (tree_view->priv->search_entry, "key-press-event",
14113                           G_CALLBACK (gtk_tree_view_search_key_press_event),
14114                           tree_view);
14115
14116         gtk_tree_view_search_init (tree_view->priv->search_entry, tree_view);
14117     }
14118   else
14119     {
14120       tree_view->priv->search_entry = NULL;
14121       tree_view->priv->search_custom_entry_set = FALSE;
14122     }
14123 }
14124
14125 /**
14126  * gtk_tree_view_set_search_position_func:
14127  * @tree_view: A #GtkTreeView
14128  * @func: (allow-none): the function to use to position the search dialog, or %NULL
14129  *    to use the default search position function
14130  * @data: (allow-none): user data to pass to @func, or %NULL
14131  * @destroy: (allow-none): Destroy notifier for @data, or %NULL
14132  *
14133  * Sets the function to use when positioning the search dialog.
14134  *
14135  * Since: 2.10
14136  **/
14137 void
14138 gtk_tree_view_set_search_position_func (GtkTreeView                   *tree_view,
14139                                         GtkTreeViewSearchPositionFunc  func,
14140                                         gpointer                       user_data,
14141                                         GDestroyNotify                 destroy)
14142 {
14143   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
14144
14145   if (tree_view->priv->search_position_destroy)
14146     tree_view->priv->search_position_destroy (tree_view->priv->search_position_user_data);
14147
14148   tree_view->priv->search_position_func = func;
14149   tree_view->priv->search_position_user_data = user_data;
14150   tree_view->priv->search_position_destroy = destroy;
14151   if (tree_view->priv->search_position_func == NULL)
14152     tree_view->priv->search_position_func = gtk_tree_view_search_position_func;
14153 }
14154
14155 /**
14156  * gtk_tree_view_get_search_position_func:
14157  * @tree_view: A #GtkTreeView
14158  *
14159  * Returns the positioning function currently in use.
14160  *
14161  * Return value: the currently used function for positioning the search dialog.
14162  *
14163  * Since: 2.10
14164  */
14165 GtkTreeViewSearchPositionFunc
14166 gtk_tree_view_get_search_position_func (GtkTreeView *tree_view)
14167 {
14168   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), NULL);
14169
14170   return tree_view->priv->search_position_func;
14171 }
14172
14173
14174 static void
14175 gtk_tree_view_search_dialog_hide (GtkWidget   *search_dialog,
14176                                   GtkTreeView *tree_view,
14177                                   GdkDevice   *device)
14178 {
14179   if (tree_view->priv->disable_popdown)
14180     return;
14181
14182   if (tree_view->priv->search_entry_changed_id)
14183     {
14184       g_signal_handler_disconnect (tree_view->priv->search_entry,
14185                                    tree_view->priv->search_entry_changed_id);
14186       tree_view->priv->search_entry_changed_id = 0;
14187     }
14188   if (tree_view->priv->typeselect_flush_timeout)
14189     {
14190       g_source_remove (tree_view->priv->typeselect_flush_timeout);
14191       tree_view->priv->typeselect_flush_timeout = 0;
14192     }
14193
14194   if (gtk_widget_get_visible (search_dialog))
14195     {
14196       /* send focus-in event */
14197       send_focus_change (GTK_WIDGET (tree_view->priv->search_entry), device, FALSE);
14198       gtk_widget_hide (search_dialog);
14199       gtk_entry_set_text (GTK_ENTRY (tree_view->priv->search_entry), "");
14200       send_focus_change (GTK_WIDGET (tree_view), device, TRUE);
14201     }
14202 }
14203
14204 static void
14205 gtk_tree_view_search_position_func (GtkTreeView *tree_view,
14206                                     GtkWidget   *search_dialog,
14207                                     gpointer     user_data)
14208 {
14209   gint x, y;
14210   gint tree_x, tree_y;
14211   gint tree_width, tree_height;
14212   GdkWindow *tree_window = gtk_widget_get_window (GTK_WIDGET (tree_view));
14213   GdkScreen *screen = gdk_window_get_screen (tree_window);
14214   GtkRequisition requisition;
14215   gint monitor_num;
14216   GdkRectangle monitor;
14217
14218   monitor_num = gdk_screen_get_monitor_at_window (screen, tree_window);
14219   gdk_screen_get_monitor_geometry (screen, monitor_num, &monitor);
14220
14221   gtk_widget_realize (search_dialog);
14222
14223   gdk_window_get_origin (tree_window, &tree_x, &tree_y);
14224   gdk_drawable_get_size (tree_window,
14225                          &tree_width,
14226                          &tree_height);
14227   gtk_size_request_get_size (GTK_SIZE_REQUEST (search_dialog),
14228                              &requisition, NULL);
14229
14230   if (tree_x + tree_width > gdk_screen_get_width (screen))
14231     x = gdk_screen_get_width (screen) - requisition.width;
14232   else if (tree_x + tree_width - requisition.width < 0)
14233     x = 0;
14234   else
14235     x = tree_x + tree_width - requisition.width;
14236
14237   if (tree_y + tree_height + requisition.height > gdk_screen_get_height (screen))
14238     y = gdk_screen_get_height (screen) - requisition.height;
14239   else if (tree_y + tree_height < 0) /* isn't really possible ... */
14240     y = 0;
14241   else
14242     y = tree_y + tree_height;
14243
14244   gtk_window_move (GTK_WINDOW (search_dialog), x, y);
14245 }
14246
14247 static void
14248 gtk_tree_view_search_disable_popdown (GtkEntry *entry,
14249                                       GtkMenu  *menu,
14250                                       gpointer  data)
14251 {
14252   GtkTreeView *tree_view = (GtkTreeView *)data;
14253
14254   tree_view->priv->disable_popdown = 1;
14255   g_signal_connect (menu, "hide",
14256                     G_CALLBACK (gtk_tree_view_search_enable_popdown), data);
14257 }
14258
14259 /* Because we're visible but offscreen, we just set a flag in the preedit
14260  * callback.
14261  */
14262 static void
14263 gtk_tree_view_search_preedit_changed (GtkIMContext *im_context,
14264                                       GtkTreeView  *tree_view)
14265 {
14266   tree_view->priv->imcontext_changed = 1;
14267   if (tree_view->priv->typeselect_flush_timeout)
14268     {
14269       g_source_remove (tree_view->priv->typeselect_flush_timeout);
14270       tree_view->priv->typeselect_flush_timeout =
14271         gdk_threads_add_timeout (GTK_TREE_VIEW_SEARCH_DIALOG_TIMEOUT,
14272                        (GSourceFunc) gtk_tree_view_search_entry_flush_timeout,
14273                        tree_view);
14274     }
14275
14276 }
14277
14278 static void
14279 gtk_tree_view_search_activate (GtkEntry    *entry,
14280                                GtkTreeView *tree_view)
14281 {
14282   GtkTreePath *path;
14283   GtkRBNode *node;
14284   GtkRBTree *tree;
14285
14286   gtk_tree_view_search_dialog_hide (tree_view->priv->search_window,
14287                                     tree_view,
14288                                     gtk_get_current_event_device ());
14289
14290   /* If we have a row selected and it's the cursor row, we activate
14291    * the row XXX */
14292   if (gtk_tree_row_reference_valid (tree_view->priv->cursor))
14293     {
14294       path = gtk_tree_row_reference_get_path (tree_view->priv->cursor);
14295
14296       _gtk_tree_view_find_node (tree_view, path, &tree, &node);
14297
14298       if (node && GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_SELECTED))
14299         gtk_tree_view_row_activated (tree_view, path, tree_view->priv->focus_column);
14300
14301       gtk_tree_path_free (path);
14302     }
14303 }
14304
14305 static gboolean
14306 gtk_tree_view_real_search_enable_popdown (gpointer data)
14307 {
14308   GtkTreeView *tree_view = (GtkTreeView *)data;
14309
14310   tree_view->priv->disable_popdown = 0;
14311
14312   return FALSE;
14313 }
14314
14315 static void
14316 gtk_tree_view_search_enable_popdown (GtkWidget *widget,
14317                                      gpointer   data)
14318 {
14319   gdk_threads_add_timeout_full (G_PRIORITY_HIGH, 200, gtk_tree_view_real_search_enable_popdown, g_object_ref (data), g_object_unref);
14320 }
14321
14322 static gboolean
14323 gtk_tree_view_search_delete_event (GtkWidget *widget,
14324                                    GdkEventAny *event,
14325                                    GtkTreeView *tree_view)
14326 {
14327   g_return_val_if_fail (GTK_IS_WIDGET (widget), FALSE);
14328
14329   gtk_tree_view_search_dialog_hide (widget, tree_view, NULL);
14330
14331   return TRUE;
14332 }
14333
14334 static gboolean
14335 gtk_tree_view_search_button_press_event (GtkWidget *widget,
14336                                          GdkEventButton *event,
14337                                          GtkTreeView *tree_view)
14338 {
14339   GdkDevice *keyb_device;
14340
14341   g_return_val_if_fail (GTK_IS_WIDGET (widget), FALSE);
14342
14343   keyb_device = gdk_device_get_associated_device (event->device);
14344   gtk_tree_view_search_dialog_hide (widget, tree_view, keyb_device);
14345
14346   if (event->window == tree_view->priv->bin_window)
14347     gtk_tree_view_button_press (GTK_WIDGET (tree_view), event);
14348
14349   return TRUE;
14350 }
14351
14352 static gboolean
14353 gtk_tree_view_search_scroll_event (GtkWidget *widget,
14354                                    GdkEventScroll *event,
14355                                    GtkTreeView *tree_view)
14356 {
14357   gboolean retval = FALSE;
14358
14359   if (event->direction == GDK_SCROLL_UP)
14360     {
14361       gtk_tree_view_search_move (widget, tree_view, TRUE);
14362       retval = TRUE;
14363     }
14364   else if (event->direction == GDK_SCROLL_DOWN)
14365     {
14366       gtk_tree_view_search_move (widget, tree_view, FALSE);
14367       retval = TRUE;
14368     }
14369
14370   /* renew the flush timeout */
14371   if (retval && tree_view->priv->typeselect_flush_timeout
14372       && !tree_view->priv->search_custom_entry_set)
14373     {
14374       g_source_remove (tree_view->priv->typeselect_flush_timeout);
14375       tree_view->priv->typeselect_flush_timeout =
14376         gdk_threads_add_timeout (GTK_TREE_VIEW_SEARCH_DIALOG_TIMEOUT,
14377                        (GSourceFunc) gtk_tree_view_search_entry_flush_timeout,
14378                        tree_view);
14379     }
14380
14381   return retval;
14382 }
14383
14384 static gboolean
14385 gtk_tree_view_search_key_press_event (GtkWidget *widget,
14386                                       GdkEventKey *event,
14387                                       GtkTreeView *tree_view)
14388 {
14389   gboolean retval = FALSE;
14390
14391   g_return_val_if_fail (GTK_IS_WIDGET (widget), FALSE);
14392   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), FALSE);
14393
14394   /* close window and cancel the search */
14395   if (!tree_view->priv->search_custom_entry_set
14396       && (event->keyval == GDK_KEY_Escape ||
14397           event->keyval == GDK_KEY_Tab ||
14398             event->keyval == GDK_KEY_KP_Tab ||
14399             event->keyval == GDK_KEY_ISO_Left_Tab))
14400     {
14401       gtk_tree_view_search_dialog_hide (widget, tree_view,
14402                                         gdk_event_get_device ((GdkEvent *) event));
14403       return TRUE;
14404     }
14405
14406   /* select previous matching iter */
14407   if (event->keyval == GDK_KEY_Up || event->keyval == GDK_KEY_KP_Up)
14408     {
14409       if (!gtk_tree_view_search_move (widget, tree_view, TRUE))
14410         gtk_widget_error_bell (widget);
14411
14412       retval = TRUE;
14413     }
14414
14415   if (((event->state & (GTK_DEFAULT_ACCEL_MOD_MASK | GDK_SHIFT_MASK)) == (GTK_DEFAULT_ACCEL_MOD_MASK | GDK_SHIFT_MASK))
14416       && (event->keyval == GDK_KEY_g || event->keyval == GDK_KEY_G))
14417     {
14418       if (!gtk_tree_view_search_move (widget, tree_view, TRUE))
14419         gtk_widget_error_bell (widget);
14420
14421       retval = TRUE;
14422     }
14423
14424   /* select next matching iter */
14425   if (event->keyval == GDK_KEY_Down || event->keyval == GDK_KEY_KP_Down)
14426     {
14427       if (!gtk_tree_view_search_move (widget, tree_view, FALSE))
14428         gtk_widget_error_bell (widget);
14429
14430       retval = TRUE;
14431     }
14432
14433   if (((event->state & (GTK_DEFAULT_ACCEL_MOD_MASK | GDK_SHIFT_MASK)) == GTK_DEFAULT_ACCEL_MOD_MASK)
14434       && (event->keyval == GDK_KEY_g || event->keyval == GDK_KEY_G))
14435     {
14436       if (!gtk_tree_view_search_move (widget, tree_view, FALSE))
14437         gtk_widget_error_bell (widget);
14438
14439       retval = TRUE;
14440     }
14441
14442   /* renew the flush timeout */
14443   if (retval && tree_view->priv->typeselect_flush_timeout
14444       && !tree_view->priv->search_custom_entry_set)
14445     {
14446       g_source_remove (tree_view->priv->typeselect_flush_timeout);
14447       tree_view->priv->typeselect_flush_timeout =
14448         gdk_threads_add_timeout (GTK_TREE_VIEW_SEARCH_DIALOG_TIMEOUT,
14449                        (GSourceFunc) gtk_tree_view_search_entry_flush_timeout,
14450                        tree_view);
14451     }
14452
14453   return retval;
14454 }
14455
14456 /*  this function returns FALSE if there is a search string but
14457  *  nothing was found, and TRUE otherwise.
14458  */
14459 static gboolean
14460 gtk_tree_view_search_move (GtkWidget   *window,
14461                            GtkTreeView *tree_view,
14462                            gboolean     up)
14463 {
14464   gboolean ret;
14465   gint len;
14466   gint count = 0;
14467   const gchar *text;
14468   GtkTreeIter iter;
14469   GtkTreeModel *model;
14470   GtkTreeSelection *selection;
14471
14472   text = gtk_entry_get_text (GTK_ENTRY (tree_view->priv->search_entry));
14473
14474   g_return_val_if_fail (text != NULL, FALSE);
14475
14476   len = strlen (text);
14477
14478   if (up && tree_view->priv->selected_iter == 1)
14479     return strlen (text) < 1;
14480
14481   len = strlen (text);
14482
14483   if (len < 1)
14484     return TRUE;
14485
14486   model = gtk_tree_view_get_model (tree_view);
14487   selection = gtk_tree_view_get_selection (tree_view);
14488
14489   /* search */
14490   gtk_tree_selection_unselect_all (selection);
14491   if (!gtk_tree_model_get_iter_first (model, &iter))
14492     return TRUE;
14493
14494   ret = gtk_tree_view_search_iter (model, selection, &iter, text,
14495                                    &count, up?((tree_view->priv->selected_iter) - 1):((tree_view->priv->selected_iter + 1)));
14496
14497   if (ret)
14498     {
14499       /* found */
14500       tree_view->priv->selected_iter += up?(-1):(1);
14501       return TRUE;
14502     }
14503   else
14504     {
14505       /* return to old iter */
14506       count = 0;
14507       gtk_tree_model_get_iter_first (model, &iter);
14508       gtk_tree_view_search_iter (model, selection,
14509                                  &iter, text,
14510                                  &count, tree_view->priv->selected_iter);
14511       return FALSE;
14512     }
14513 }
14514
14515 static gboolean
14516 gtk_tree_view_search_equal_func (GtkTreeModel *model,
14517                                  gint          column,
14518                                  const gchar  *key,
14519                                  GtkTreeIter  *iter,
14520                                  gpointer      search_data)
14521 {
14522   gboolean retval = TRUE;
14523   const gchar *str;
14524   gchar *normalized_string;
14525   gchar *normalized_key;
14526   gchar *case_normalized_string = NULL;
14527   gchar *case_normalized_key = NULL;
14528   GValue value = {0,};
14529   GValue transformed = {0,};
14530
14531   gtk_tree_model_get_value (model, iter, column, &value);
14532
14533   g_value_init (&transformed, G_TYPE_STRING);
14534
14535   if (!g_value_transform (&value, &transformed))
14536     {
14537       g_value_unset (&value);
14538       return TRUE;
14539     }
14540
14541   g_value_unset (&value);
14542
14543   str = g_value_get_string (&transformed);
14544   if (!str)
14545     {
14546       g_value_unset (&transformed);
14547       return TRUE;
14548     }
14549
14550   normalized_string = g_utf8_normalize (str, -1, G_NORMALIZE_ALL);
14551   normalized_key = g_utf8_normalize (key, -1, G_NORMALIZE_ALL);
14552
14553   if (normalized_string && normalized_key)
14554     {
14555       case_normalized_string = g_utf8_casefold (normalized_string, -1);
14556       case_normalized_key = g_utf8_casefold (normalized_key, -1);
14557
14558       if (strncmp (case_normalized_key, case_normalized_string, strlen (case_normalized_key)) == 0)
14559         retval = FALSE;
14560     }
14561
14562   g_value_unset (&transformed);
14563   g_free (normalized_key);
14564   g_free (normalized_string);
14565   g_free (case_normalized_key);
14566   g_free (case_normalized_string);
14567
14568   return retval;
14569 }
14570
14571 static gboolean
14572 gtk_tree_view_search_iter (GtkTreeModel     *model,
14573                            GtkTreeSelection *selection,
14574                            GtkTreeIter      *iter,
14575                            const gchar      *text,
14576                            gint             *count,
14577                            gint              n)
14578 {
14579   GtkRBTree *tree = NULL;
14580   GtkRBNode *node = NULL;
14581   GtkTreePath *path;
14582
14583   GtkTreeView *tree_view = gtk_tree_selection_get_tree_view (selection);
14584
14585   path = gtk_tree_model_get_path (model, iter);
14586   _gtk_tree_view_find_node (tree_view, path, &tree, &node);
14587
14588   do
14589     {
14590       if (! tree_view->priv->search_equal_func (model, tree_view->priv->search_column, text, iter, tree_view->priv->search_user_data))
14591         {
14592           (*count)++;
14593           if (*count == n)
14594             {
14595               gtk_tree_view_scroll_to_cell (tree_view, path, NULL,
14596                                             TRUE, 0.5, 0.0);
14597               gtk_tree_selection_select_iter (selection, iter);
14598               gtk_tree_view_real_set_cursor (tree_view, path, FALSE, TRUE);
14599
14600               if (path)
14601                 gtk_tree_path_free (path);
14602
14603               return TRUE;
14604             }
14605         }
14606
14607       if (node->children)
14608         {
14609           gboolean has_child;
14610           GtkTreeIter tmp;
14611
14612           tree = node->children;
14613           node = tree->root;
14614
14615           while (node->left != tree->nil)
14616             node = node->left;
14617
14618           tmp = *iter;
14619           has_child = gtk_tree_model_iter_children (model, iter, &tmp);
14620           gtk_tree_path_down (path);
14621
14622           /* sanity check */
14623           TREE_VIEW_INTERNAL_ASSERT (has_child, FALSE);
14624         }
14625       else
14626         {
14627           gboolean done = FALSE;
14628
14629           do
14630             {
14631               node = _gtk_rbtree_next (tree, node);
14632
14633               if (node)
14634                 {
14635                   gboolean has_next;
14636
14637                   has_next = gtk_tree_model_iter_next (model, iter);
14638
14639                   done = TRUE;
14640                   gtk_tree_path_next (path);
14641
14642                   /* sanity check */
14643                   TREE_VIEW_INTERNAL_ASSERT (has_next, FALSE);
14644                 }
14645               else
14646                 {
14647                   gboolean has_parent;
14648                   GtkTreeIter tmp_iter = *iter;
14649
14650                   node = tree->parent_node;
14651                   tree = tree->parent_tree;
14652
14653                   if (!tree)
14654                     {
14655                       if (path)
14656                         gtk_tree_path_free (path);
14657
14658                       /* we've run out of tree, done with this func */
14659                       return FALSE;
14660                     }
14661
14662                   has_parent = gtk_tree_model_iter_parent (model,
14663                                                            iter,
14664                                                            &tmp_iter);
14665                   gtk_tree_path_up (path);
14666
14667                   /* sanity check */
14668                   TREE_VIEW_INTERNAL_ASSERT (has_parent, FALSE);
14669                 }
14670             }
14671           while (!done);
14672         }
14673     }
14674   while (1);
14675
14676   return FALSE;
14677 }
14678
14679 static void
14680 gtk_tree_view_search_init (GtkWidget   *entry,
14681                            GtkTreeView *tree_view)
14682 {
14683   gint ret;
14684   gint count = 0;
14685   const gchar *text;
14686   GtkTreeIter iter;
14687   GtkTreeModel *model;
14688   GtkTreeSelection *selection;
14689
14690   g_return_if_fail (GTK_IS_ENTRY (entry));
14691   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
14692
14693   text = gtk_entry_get_text (GTK_ENTRY (entry));
14694
14695   model = gtk_tree_view_get_model (tree_view);
14696   selection = gtk_tree_view_get_selection (tree_view);
14697
14698   /* search */
14699   gtk_tree_selection_unselect_all (selection);
14700   if (tree_view->priv->typeselect_flush_timeout
14701       && !tree_view->priv->search_custom_entry_set)
14702     {
14703       g_source_remove (tree_view->priv->typeselect_flush_timeout);
14704       tree_view->priv->typeselect_flush_timeout =
14705         gdk_threads_add_timeout (GTK_TREE_VIEW_SEARCH_DIALOG_TIMEOUT,
14706                        (GSourceFunc) gtk_tree_view_search_entry_flush_timeout,
14707                        tree_view);
14708     }
14709
14710   if (*text == '\0')
14711     return;
14712
14713   if (!gtk_tree_model_get_iter_first (model, &iter))
14714     return;
14715
14716   ret = gtk_tree_view_search_iter (model, selection,
14717                                    &iter, text,
14718                                    &count, 1);
14719
14720   if (ret)
14721     tree_view->priv->selected_iter = 1;
14722 }
14723
14724 static void
14725 gtk_tree_view_remove_widget (GtkCellEditable *cell_editable,
14726                              GtkTreeView     *tree_view)
14727 {
14728   if (tree_view->priv->edited_column == NULL)
14729     return;
14730
14731   _gtk_tree_view_column_stop_editing (tree_view->priv->edited_column);
14732   tree_view->priv->edited_column = NULL;
14733
14734   if (gtk_widget_has_focus (GTK_WIDGET (cell_editable)))
14735     gtk_widget_grab_focus (GTK_WIDGET (tree_view));
14736
14737   g_signal_handlers_disconnect_by_func (cell_editable,
14738                                         gtk_tree_view_remove_widget,
14739                                         tree_view);
14740
14741   gtk_container_remove (GTK_CONTAINER (tree_view),
14742                         GTK_WIDGET (cell_editable));
14743
14744   /* FIXME should only redraw a single node */
14745   gtk_widget_queue_draw (GTK_WIDGET (tree_view));
14746 }
14747
14748 static gboolean
14749 gtk_tree_view_start_editing (GtkTreeView *tree_view,
14750                              GtkTreePath *cursor_path)
14751 {
14752   GtkTreeIter iter;
14753   GdkRectangle background_area;
14754   GdkRectangle cell_area;
14755   GtkCellEditable *editable_widget = NULL;
14756   gchar *path_string;
14757   guint flags = 0; /* can be 0, as the flags are primarily for rendering */
14758   gint retval = FALSE;
14759   GtkRBTree *cursor_tree;
14760   GtkRBNode *cursor_node;
14761
14762   g_assert (tree_view->priv->focus_column);
14763
14764   if (!gtk_widget_get_realized (GTK_WIDGET (tree_view)))
14765     return FALSE;
14766
14767   if (_gtk_tree_view_find_node (tree_view, cursor_path, &cursor_tree, &cursor_node) ||
14768       cursor_node == NULL)
14769     return FALSE;
14770
14771   path_string = gtk_tree_path_to_string (cursor_path);
14772   gtk_tree_model_get_iter (tree_view->priv->model, &iter, cursor_path);
14773
14774   validate_row (tree_view, cursor_tree, cursor_node, &iter, cursor_path);
14775
14776   gtk_tree_view_column_cell_set_cell_data (tree_view->priv->focus_column,
14777                                            tree_view->priv->model,
14778                                            &iter,
14779                                            GTK_RBNODE_FLAG_SET (cursor_node, GTK_RBNODE_IS_PARENT),
14780                                            cursor_node->children?TRUE:FALSE);
14781   gtk_tree_view_get_background_area (tree_view,
14782                                      cursor_path,
14783                                      tree_view->priv->focus_column,
14784                                      &background_area);
14785   gtk_tree_view_get_cell_area (tree_view,
14786                                cursor_path,
14787                                tree_view->priv->focus_column,
14788                                &cell_area);
14789
14790   if (_gtk_tree_view_column_cell_event (tree_view->priv->focus_column,
14791                                         &editable_widget,
14792                                         NULL,
14793                                         path_string,
14794                                         &background_area,
14795                                         &cell_area,
14796                                         flags))
14797     {
14798       retval = TRUE;
14799       if (editable_widget != NULL)
14800         {
14801           gint left, right;
14802           GdkRectangle area;
14803           GtkCellRenderer *cell;
14804
14805           area = cell_area;
14806           cell = _gtk_tree_view_column_get_edited_cell (tree_view->priv->focus_column);
14807
14808           _gtk_tree_view_column_get_neighbor_sizes (tree_view->priv->focus_column, cell, &left, &right);
14809
14810           area.x += left;
14811           area.width -= right + left;
14812
14813           gtk_tree_view_real_start_editing (tree_view,
14814                                             tree_view->priv->focus_column,
14815                                             cursor_path,
14816                                             editable_widget,
14817                                             &area,
14818                                             NULL,
14819                                             flags);
14820         }
14821
14822     }
14823   g_free (path_string);
14824   return retval;
14825 }
14826
14827 static void
14828 gtk_tree_view_real_start_editing (GtkTreeView       *tree_view,
14829                                   GtkTreeViewColumn *column,
14830                                   GtkTreePath       *path,
14831                                   GtkCellEditable   *cell_editable,
14832                                   GdkRectangle      *cell_area,
14833                                   GdkEvent          *event,
14834                                   guint              flags)
14835 {
14836   gint pre_val = tree_view->priv->vadjustment->value;
14837   GtkRequisition requisition;
14838
14839   tree_view->priv->edited_column = column;
14840   _gtk_tree_view_column_start_editing (column, GTK_CELL_EDITABLE (cell_editable));
14841
14842   gtk_tree_view_real_set_cursor (tree_view, path, FALSE, TRUE);
14843   cell_area->y += pre_val - (int)tree_view->priv->vadjustment->value;
14844
14845   gtk_size_request_get_size (GTK_SIZE_REQUEST (cell_editable),
14846                              &requisition, NULL);
14847
14848   GTK_TREE_VIEW_SET_FLAG (tree_view, GTK_TREE_VIEW_DRAW_KEYFOCUS);
14849
14850   if (requisition.height < cell_area->height)
14851     {
14852       gint diff = cell_area->height - requisition.height;
14853       gtk_tree_view_put (tree_view,
14854                          GTK_WIDGET (cell_editable),
14855                          cell_area->x, cell_area->y + diff/2,
14856                          cell_area->width, requisition.height);
14857     }
14858   else
14859     {
14860       gtk_tree_view_put (tree_view,
14861                          GTK_WIDGET (cell_editable),
14862                          cell_area->x, cell_area->y,
14863                          cell_area->width, cell_area->height);
14864     }
14865
14866   gtk_cell_editable_start_editing (GTK_CELL_EDITABLE (cell_editable),
14867                                    (GdkEvent *)event);
14868
14869   gtk_widget_grab_focus (GTK_WIDGET (cell_editable));
14870   g_signal_connect (cell_editable, "remove-widget",
14871                     G_CALLBACK (gtk_tree_view_remove_widget), tree_view);
14872 }
14873
14874 static void
14875 gtk_tree_view_stop_editing (GtkTreeView *tree_view,
14876                             gboolean     cancel_editing)
14877 {
14878   GtkTreeViewColumn *column;
14879   GtkCellRenderer *cell;
14880
14881   if (tree_view->priv->edited_column == NULL)
14882     return;
14883
14884   /*
14885    * This is very evil. We need to do this, because
14886    * gtk_cell_editable_editing_done may trigger gtk_tree_view_row_changed
14887    * later on. If gtk_tree_view_row_changed notices
14888    * tree_view->priv->edited_column != NULL, it'll call
14889    * gtk_tree_view_stop_editing again. Bad things will happen then.
14890    *
14891    * Please read that again if you intend to modify anything here.
14892    */
14893
14894   column = tree_view->priv->edited_column;
14895   tree_view->priv->edited_column = NULL;
14896
14897   cell = _gtk_tree_view_column_get_edited_cell (column);
14898   gtk_cell_renderer_stop_editing (cell, cancel_editing);
14899
14900   if (!cancel_editing)
14901     gtk_cell_editable_editing_done (column->editable_widget);
14902
14903   tree_view->priv->edited_column = column;
14904
14905   gtk_cell_editable_remove_widget (column->editable_widget);
14906 }
14907
14908
14909 /**
14910  * gtk_tree_view_set_hover_selection:
14911  * @tree_view: a #GtkTreeView
14912  * @hover: %TRUE to enable hover selection mode
14913  *
14914  * Enables of disables the hover selection mode of @tree_view.
14915  * Hover selection makes the selected row follow the pointer.
14916  * Currently, this works only for the selection modes
14917  * %GTK_SELECTION_SINGLE and %GTK_SELECTION_BROWSE.
14918  *
14919  * Since: 2.6
14920  **/
14921 void
14922 gtk_tree_view_set_hover_selection (GtkTreeView *tree_view,
14923                                    gboolean     hover)
14924 {
14925   hover = hover != FALSE;
14926
14927   if (hover != tree_view->priv->hover_selection)
14928     {
14929       tree_view->priv->hover_selection = hover;
14930
14931       g_object_notify (G_OBJECT (tree_view), "hover-selection");
14932     }
14933 }
14934
14935 /**
14936  * gtk_tree_view_get_hover_selection:
14937  * @tree_view: a #GtkTreeView
14938  *
14939  * Returns whether hover selection mode is turned on for @tree_view.
14940  *
14941  * Return value: %TRUE if @tree_view is in hover selection mode
14942  *
14943  * Since: 2.6
14944  **/
14945 gboolean
14946 gtk_tree_view_get_hover_selection (GtkTreeView *tree_view)
14947 {
14948   return tree_view->priv->hover_selection;
14949 }
14950
14951 /**
14952  * gtk_tree_view_set_hover_expand:
14953  * @tree_view: a #GtkTreeView
14954  * @expand: %TRUE to enable hover selection mode
14955  *
14956  * Enables of disables the hover expansion mode of @tree_view.
14957  * Hover expansion makes rows expand or collapse if the pointer
14958  * moves over them.
14959  *
14960  * Since: 2.6
14961  **/
14962 void
14963 gtk_tree_view_set_hover_expand (GtkTreeView *tree_view,
14964                                 gboolean     expand)
14965 {
14966   expand = expand != FALSE;
14967
14968   if (expand != tree_view->priv->hover_expand)
14969     {
14970       tree_view->priv->hover_expand = expand;
14971
14972       g_object_notify (G_OBJECT (tree_view), "hover-expand");
14973     }
14974 }
14975
14976 /**
14977  * gtk_tree_view_get_hover_expand:
14978  * @tree_view: a #GtkTreeView
14979  *
14980  * Returns whether hover expansion mode is turned on for @tree_view.
14981  *
14982  * Return value: %TRUE if @tree_view is in hover expansion mode
14983  *
14984  * Since: 2.6
14985  **/
14986 gboolean
14987 gtk_tree_view_get_hover_expand (GtkTreeView *tree_view)
14988 {
14989   return tree_view->priv->hover_expand;
14990 }
14991
14992 /**
14993  * gtk_tree_view_set_rubber_banding:
14994  * @tree_view: a #GtkTreeView
14995  * @enable: %TRUE to enable rubber banding
14996  *
14997  * Enables or disables rubber banding in @tree_view.  If the selection mode
14998  * is #GTK_SELECTION_MULTIPLE, rubber banding will allow the user to select
14999  * multiple rows by dragging the mouse.
15000  *
15001  * Since: 2.10
15002  **/
15003 void
15004 gtk_tree_view_set_rubber_banding (GtkTreeView *tree_view,
15005                                   gboolean     enable)
15006 {
15007   enable = enable != FALSE;
15008
15009   if (enable != tree_view->priv->rubber_banding_enable)
15010     {
15011       tree_view->priv->rubber_banding_enable = enable;
15012
15013       g_object_notify (G_OBJECT (tree_view), "rubber-banding");
15014     }
15015 }
15016
15017 /**
15018  * gtk_tree_view_get_rubber_banding:
15019  * @tree_view: a #GtkTreeView
15020  *
15021  * Returns whether rubber banding is turned on for @tree_view.  If the
15022  * selection mode is #GTK_SELECTION_MULTIPLE, rubber banding will allow the
15023  * user to select multiple rows by dragging the mouse.
15024  *
15025  * Return value: %TRUE if rubber banding in @tree_view is enabled.
15026  *
15027  * Since: 2.10
15028  **/
15029 gboolean
15030 gtk_tree_view_get_rubber_banding (GtkTreeView *tree_view)
15031 {
15032   return tree_view->priv->rubber_banding_enable;
15033 }
15034
15035 /**
15036  * gtk_tree_view_is_rubber_banding_active:
15037  * @tree_view: a #GtkTreeView
15038  *
15039  * Returns whether a rubber banding operation is currently being done
15040  * in @tree_view.
15041  *
15042  * Return value: %TRUE if a rubber banding operation is currently being
15043  * done in @tree_view.
15044  *
15045  * Since: 2.12
15046  **/
15047 gboolean
15048 gtk_tree_view_is_rubber_banding_active (GtkTreeView *tree_view)
15049 {
15050   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), FALSE);
15051
15052   if (tree_view->priv->rubber_banding_enable
15053       && tree_view->priv->rubber_band_status == RUBBER_BAND_ACTIVE)
15054     return TRUE;
15055
15056   return FALSE;
15057 }
15058
15059 /**
15060  * gtk_tree_view_get_row_separator_func:
15061  * @tree_view: a #GtkTreeView
15062  *
15063  * Returns the current row separator function.
15064  *
15065  * Return value: the current row separator function.
15066  *
15067  * Since: 2.6
15068  **/
15069 GtkTreeViewRowSeparatorFunc
15070 gtk_tree_view_get_row_separator_func (GtkTreeView *tree_view)
15071 {
15072   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), NULL);
15073
15074   return tree_view->priv->row_separator_func;
15075 }
15076
15077 /**
15078  * gtk_tree_view_set_row_separator_func:
15079  * @tree_view: a #GtkTreeView
15080  * @func: (allow-none): a #GtkTreeViewRowSeparatorFunc
15081  * @data: (allow-none): user data to pass to @func, or %NULL
15082  * @destroy: (allow-none): destroy notifier for @data, or %NULL
15083  *
15084  * Sets the row separator function, which is used to determine
15085  * whether a row should be drawn as a separator. If the row separator
15086  * function is %NULL, no separators are drawn. This is the default value.
15087  *
15088  * Since: 2.6
15089  **/
15090 void
15091 gtk_tree_view_set_row_separator_func (GtkTreeView                 *tree_view,
15092                                       GtkTreeViewRowSeparatorFunc  func,
15093                                       gpointer                     data,
15094                                       GDestroyNotify               destroy)
15095 {
15096   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
15097
15098   if (tree_view->priv->row_separator_destroy)
15099     tree_view->priv->row_separator_destroy (tree_view->priv->row_separator_data);
15100
15101   tree_view->priv->row_separator_func = func;
15102   tree_view->priv->row_separator_data = data;
15103   tree_view->priv->row_separator_destroy = destroy;
15104
15105   /* Have the tree recalculate heights */
15106   _gtk_rbtree_mark_invalid (tree_view->priv->tree);
15107   gtk_widget_queue_resize (GTK_WIDGET (tree_view));
15108 }
15109
15110
15111 static void
15112 gtk_tree_view_grab_notify (GtkWidget *widget,
15113                            gboolean   was_grabbed)
15114 {
15115   GtkTreeView *tree_view = GTK_TREE_VIEW (widget);
15116
15117   tree_view->priv->in_grab = !was_grabbed;
15118
15119   if (!was_grabbed)
15120     {
15121       tree_view->priv->pressed_button = -1;
15122
15123       if (tree_view->priv->rubber_band_status)
15124         gtk_tree_view_stop_rubber_band (tree_view);
15125     }
15126 }
15127
15128 static void
15129 gtk_tree_view_state_changed (GtkWidget      *widget,
15130                              GtkStateType    previous_state)
15131 {
15132   GtkTreeView *tree_view = GTK_TREE_VIEW (widget);
15133
15134   if (gtk_widget_get_realized (widget))
15135     {
15136       gdk_window_set_background (tree_view->priv->bin_window,
15137                                  &gtk_widget_get_style (widget)->base[gtk_widget_get_state (widget)]);
15138     }
15139
15140   gtk_widget_queue_draw (widget);
15141 }
15142
15143 /**
15144  * gtk_tree_view_get_grid_lines:
15145  * @tree_view: a #GtkTreeView
15146  *
15147  * Returns which grid lines are enabled in @tree_view.
15148  *
15149  * Return value: a #GtkTreeViewGridLines value indicating which grid lines
15150  * are enabled.
15151  *
15152  * Since: 2.10
15153  */
15154 GtkTreeViewGridLines
15155 gtk_tree_view_get_grid_lines (GtkTreeView *tree_view)
15156 {
15157   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), 0);
15158
15159   return tree_view->priv->grid_lines;
15160 }
15161
15162 /**
15163  * gtk_tree_view_set_grid_lines:
15164  * @tree_view: a #GtkTreeView
15165  * @grid_lines: a #GtkTreeViewGridLines value indicating which grid lines to
15166  * enable.
15167  *
15168  * Sets which grid lines to draw in @tree_view.
15169  *
15170  * Since: 2.10
15171  */
15172 void
15173 gtk_tree_view_set_grid_lines (GtkTreeView           *tree_view,
15174                               GtkTreeViewGridLines   grid_lines)
15175 {
15176   GtkTreeViewPrivate *priv;
15177   GtkWidget *widget;
15178   GtkTreeViewGridLines old_grid_lines;
15179
15180   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
15181
15182   priv = tree_view->priv;
15183   widget = GTK_WIDGET (tree_view);
15184
15185   old_grid_lines = priv->grid_lines;
15186   priv->grid_lines = grid_lines;
15187
15188   if (gtk_widget_get_realized (widget))
15189     {
15190       if (grid_lines == GTK_TREE_VIEW_GRID_LINES_NONE &&
15191           priv->grid_line_width)
15192         {
15193           priv->grid_line_width = 0;
15194         }
15195
15196       if (grid_lines != GTK_TREE_VIEW_GRID_LINES_NONE &&
15197           !priv->grid_line_width)
15198         {
15199           gint8 *dash_list;
15200
15201           gtk_widget_style_get (widget,
15202                                 "grid-line-width", &priv->grid_line_width,
15203                                 "grid-line-pattern", (gchar *)&dash_list,
15204                                 NULL);
15205
15206           if (dash_list)
15207             {
15208               priv->grid_line_dashes[0] = dash_list[0];
15209               if (dash_list[0])
15210                 priv->grid_line_dashes[1] = dash_list[1];
15211
15212               g_free (dash_list);
15213             }
15214           else
15215             {
15216               priv->grid_line_dashes[0] = 1;
15217               priv->grid_line_dashes[1] = 1;
15218             }
15219         }
15220     }
15221
15222   if (old_grid_lines != grid_lines)
15223     {
15224       gtk_widget_queue_draw (GTK_WIDGET (tree_view));
15225
15226       g_object_notify (G_OBJECT (tree_view), "enable-grid-lines");
15227     }
15228 }
15229
15230 /**
15231  * gtk_tree_view_get_enable_tree_lines:
15232  * @tree_view: a #GtkTreeView.
15233  *
15234  * Returns whether or not tree lines are drawn in @tree_view.
15235  *
15236  * Return value: %TRUE if tree lines are drawn in @tree_view, %FALSE
15237  * otherwise.
15238  *
15239  * Since: 2.10
15240  */
15241 gboolean
15242 gtk_tree_view_get_enable_tree_lines (GtkTreeView *tree_view)
15243 {
15244   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), FALSE);
15245
15246   return tree_view->priv->tree_lines_enabled;
15247 }
15248
15249 /**
15250  * gtk_tree_view_set_enable_tree_lines:
15251  * @tree_view: a #GtkTreeView
15252  * @enabled: %TRUE to enable tree line drawing, %FALSE otherwise.
15253  *
15254  * Sets whether to draw lines interconnecting the expanders in @tree_view.
15255  * This does not have any visible effects for lists.
15256  *
15257  * Since: 2.10
15258  */
15259 void
15260 gtk_tree_view_set_enable_tree_lines (GtkTreeView *tree_view,
15261                                      gboolean     enabled)
15262 {
15263   GtkTreeViewPrivate *priv;
15264   GtkWidget *widget;
15265   gboolean was_enabled;
15266
15267   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
15268
15269   enabled = enabled != FALSE;
15270
15271   priv = tree_view->priv;
15272   widget = GTK_WIDGET (tree_view);
15273
15274   was_enabled = priv->tree_lines_enabled;
15275
15276   priv->tree_lines_enabled = enabled;
15277
15278   if (gtk_widget_get_realized (widget))
15279     {
15280       if (!enabled && priv->tree_line_width)
15281         {
15282           priv->tree_line_width = 0;
15283         }
15284
15285       if (enabled && !priv->tree_line_width)
15286         {
15287           gint8 *dash_list;
15288           gtk_widget_style_get (widget,
15289                                 "tree-line-width", &priv->tree_line_width,
15290                                 "tree-line-pattern", (gchar *)&dash_list,
15291                                 NULL);
15292
15293           if (dash_list)
15294             {
15295               priv->tree_line_dashes[0] = dash_list[0];
15296               if (dash_list[0])
15297                 priv->tree_line_dashes[1] = dash_list[1];
15298
15299               g_free (dash_list);
15300             }
15301           else
15302             {
15303               priv->tree_line_dashes[0] = 1;
15304               priv->tree_line_dashes[1] = 1;
15305             }
15306         }
15307     }
15308
15309   if (was_enabled != enabled)
15310     {
15311       gtk_widget_queue_draw (GTK_WIDGET (tree_view));
15312
15313       g_object_notify (G_OBJECT (tree_view), "enable-tree-lines");
15314     }
15315 }
15316
15317
15318 /**
15319  * gtk_tree_view_set_show_expanders:
15320  * @tree_view: a #GtkTreeView
15321  * @enabled: %TRUE to enable expander drawing, %FALSE otherwise.
15322  *
15323  * Sets whether to draw and enable expanders and indent child rows in
15324  * @tree_view.  When disabled there will be no expanders visible in trees
15325  * and there will be no way to expand and collapse rows by default.  Also
15326  * note that hiding the expanders will disable the default indentation.  You
15327  * can set a custom indentation in this case using
15328  * gtk_tree_view_set_level_indentation().
15329  * This does not have any visible effects for lists.
15330  *
15331  * Since: 2.12
15332  */
15333 void
15334 gtk_tree_view_set_show_expanders (GtkTreeView *tree_view,
15335                                   gboolean     enabled)
15336 {
15337   gboolean was_enabled;
15338
15339   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
15340
15341   enabled = enabled != FALSE;
15342   was_enabled = GTK_TREE_VIEW_FLAG_SET (tree_view, GTK_TREE_VIEW_SHOW_EXPANDERS);
15343
15344   if (enabled)
15345     GTK_TREE_VIEW_SET_FLAG (tree_view, GTK_TREE_VIEW_SHOW_EXPANDERS);
15346   else
15347     GTK_TREE_VIEW_UNSET_FLAG (tree_view, GTK_TREE_VIEW_SHOW_EXPANDERS);
15348
15349   if (enabled != was_enabled)
15350     gtk_widget_queue_draw (GTK_WIDGET (tree_view));
15351 }
15352
15353 /**
15354  * gtk_tree_view_get_show_expanders:
15355  * @tree_view: a #GtkTreeView.
15356  *
15357  * Returns whether or not expanders are drawn in @tree_view.
15358  *
15359  * Return value: %TRUE if expanders are drawn in @tree_view, %FALSE
15360  * otherwise.
15361  *
15362  * Since: 2.12
15363  */
15364 gboolean
15365 gtk_tree_view_get_show_expanders (GtkTreeView *tree_view)
15366 {
15367   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), FALSE);
15368
15369   return GTK_TREE_VIEW_FLAG_SET (tree_view, GTK_TREE_VIEW_SHOW_EXPANDERS);
15370 }
15371
15372 /**
15373  * gtk_tree_view_set_level_indentation:
15374  * @tree_view: a #GtkTreeView
15375  * @indentation: the amount, in pixels, of extra indentation in @tree_view.
15376  *
15377  * Sets the amount of extra indentation for child levels to use in @tree_view
15378  * in addition to the default indentation.  The value should be specified in
15379  * pixels, a value of 0 disables this feature and in this case only the default
15380  * indentation will be used.
15381  * This does not have any visible effects for lists.
15382  *
15383  * Since: 2.12
15384  */
15385 void
15386 gtk_tree_view_set_level_indentation (GtkTreeView *tree_view,
15387                                      gint         indentation)
15388 {
15389   tree_view->priv->level_indentation = indentation;
15390
15391   gtk_widget_queue_draw (GTK_WIDGET (tree_view));
15392 }
15393
15394 /**
15395  * gtk_tree_view_get_level_indentation:
15396  * @tree_view: a #GtkTreeView.
15397  *
15398  * Returns the amount, in pixels, of extra indentation for child levels
15399  * in @tree_view.
15400  *
15401  * Return value: the amount of extra indentation for child levels in
15402  * @tree_view.  A return value of 0 means that this feature is disabled.
15403  *
15404  * Since: 2.12
15405  */
15406 gint
15407 gtk_tree_view_get_level_indentation (GtkTreeView *tree_view)
15408 {
15409   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), 0);
15410
15411   return tree_view->priv->level_indentation;
15412 }
15413
15414 /**
15415  * gtk_tree_view_set_tooltip_row:
15416  * @tree_view: a #GtkTreeView
15417  * @tooltip: a #GtkTooltip
15418  * @path: a #GtkTreePath
15419  *
15420  * Sets the tip area of @tooltip to be the area covered by the row at @path.
15421  * See also gtk_tree_view_set_tooltip_column() for a simpler alternative.
15422  * See also gtk_tooltip_set_tip_area().
15423  *
15424  * Since: 2.12
15425  */
15426 void
15427 gtk_tree_view_set_tooltip_row (GtkTreeView *tree_view,
15428                                GtkTooltip  *tooltip,
15429                                GtkTreePath *path)
15430 {
15431   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
15432   g_return_if_fail (GTK_IS_TOOLTIP (tooltip));
15433
15434   gtk_tree_view_set_tooltip_cell (tree_view, tooltip, path, NULL, NULL);
15435 }
15436
15437 /**
15438  * gtk_tree_view_set_tooltip_cell:
15439  * @tree_view: a #GtkTreeView
15440  * @tooltip: a #GtkTooltip
15441  * @path: (allow-none): a #GtkTreePath or %NULL
15442  * @column: (allow-none): a #GtkTreeViewColumn or %NULL
15443  * @cell: (allow-none): a #GtkCellRenderer or %NULL
15444  *
15445  * Sets the tip area of @tooltip to the area @path, @column and @cell have
15446  * in common.  For example if @path is %NULL and @column is set, the tip
15447  * area will be set to the full area covered by @column.  See also
15448  * gtk_tooltip_set_tip_area().
15449  *
15450  * Note that if @path is not specified and @cell is set and part of a column
15451  * containing the expander, the tooltip might not show and hide at the correct
15452  * position.  In such cases @path must be set to the current node under the
15453  * mouse cursor for this function to operate correctly.
15454  *
15455  * See also gtk_tree_view_set_tooltip_column() for a simpler alternative.
15456  *
15457  * Since: 2.12
15458  */
15459 void
15460 gtk_tree_view_set_tooltip_cell (GtkTreeView       *tree_view,
15461                                 GtkTooltip        *tooltip,
15462                                 GtkTreePath       *path,
15463                                 GtkTreeViewColumn *column,
15464                                 GtkCellRenderer   *cell)
15465 {
15466   GtkAllocation allocation;
15467   GdkRectangle rect;
15468
15469   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
15470   g_return_if_fail (GTK_IS_TOOLTIP (tooltip));
15471   g_return_if_fail (column == NULL || GTK_IS_TREE_VIEW_COLUMN (column));
15472   g_return_if_fail (cell == NULL || GTK_IS_CELL_RENDERER (cell));
15473
15474   /* Determine x values. */
15475   if (column && cell)
15476     {
15477       GdkRectangle tmp;
15478       gint start, width;
15479
15480       /* We always pass in path here, whether it is NULL or not.
15481        * For cells in expander columns path must be specified so that
15482        * we can correctly account for the indentation.  This also means
15483        * that the tooltip is constrained vertically by the "Determine y
15484        * values" code below; this is not a real problem since cells actually
15485        * don't stretch vertically in constrast to columns.
15486        */
15487       gtk_tree_view_get_cell_area (tree_view, path, column, &tmp);
15488       gtk_tree_view_column_cell_get_position (column, cell, &start, &width);
15489
15490       gtk_tree_view_convert_bin_window_to_widget_coords (tree_view,
15491                                                          tmp.x + start, 0,
15492                                                          &rect.x, NULL);
15493       rect.width = width;
15494     }
15495   else if (column)
15496     {
15497       GdkRectangle tmp;
15498
15499       gtk_tree_view_get_background_area (tree_view, NULL, column, &tmp);
15500       gtk_tree_view_convert_bin_window_to_widget_coords (tree_view,
15501                                                          tmp.x, 0,
15502                                                          &rect.x, NULL);
15503       rect.width = tmp.width;
15504     }
15505   else
15506     {
15507       gtk_widget_get_allocation (GTK_WIDGET (tree_view), &allocation);
15508       rect.x = 0;
15509       rect.width = allocation.width;
15510     }
15511
15512   /* Determine y values. */
15513   if (path)
15514     {
15515       GdkRectangle tmp;
15516
15517       gtk_tree_view_get_background_area (tree_view, path, NULL, &tmp);
15518       gtk_tree_view_convert_bin_window_to_widget_coords (tree_view,
15519                                                          0, tmp.y,
15520                                                          NULL, &rect.y);
15521       rect.height = tmp.height;
15522     }
15523   else
15524     {
15525       rect.y = 0;
15526       rect.height = tree_view->priv->vadjustment->page_size;
15527     }
15528
15529   gtk_tooltip_set_tip_area (tooltip, &rect);
15530 }
15531
15532 /**
15533  * gtk_tree_view_get_tooltip_context:
15534  * @tree_view: a #GtkTreeView
15535  * @x: the x coordinate (relative to widget coordinates)
15536  * @y: the y coordinate (relative to widget coordinates)
15537  * @keyboard_tip: whether this is a keyboard tooltip or not
15538  * @model: (out) (allow-none): a pointer to receive a #GtkTreeModel or %NULL
15539  * @path: (out) (allow-none): a pointer to receive a #GtkTreePath or %NULL
15540  * @iter: (out) (allow-none): a pointer to receive a #GtkTreeIter or %NULL
15541  *
15542  * This function is supposed to be used in a #GtkWidget::query-tooltip
15543  * signal handler for #GtkTreeView.  The @x, @y and @keyboard_tip values
15544  * which are received in the signal handler, should be passed to this
15545  * function without modification.
15546  *
15547  * The return value indicates whether there is a tree view row at the given
15548  * coordinates (%TRUE) or not (%FALSE) for mouse tooltips.  For keyboard
15549  * tooltips the row returned will be the cursor row.  When %TRUE, then any of
15550  * @model, @path and @iter which have been provided will be set to point to
15551  * that row and the corresponding model.  @x and @y will always be converted
15552  * to be relative to @tree_view's bin_window if @keyboard_tooltip is %FALSE.
15553  *
15554  * Return value: whether or not the given tooltip context points to a row.
15555  *
15556  * Since: 2.12
15557  */
15558 gboolean
15559 gtk_tree_view_get_tooltip_context (GtkTreeView   *tree_view,
15560                                    gint          *x,
15561                                    gint          *y,
15562                                    gboolean       keyboard_tip,
15563                                    GtkTreeModel **model,
15564                                    GtkTreePath  **path,
15565                                    GtkTreeIter   *iter)
15566 {
15567   GtkTreePath *tmppath = NULL;
15568
15569   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), FALSE);
15570   g_return_val_if_fail (x != NULL, FALSE);
15571   g_return_val_if_fail (y != NULL, FALSE);
15572
15573   if (keyboard_tip)
15574     {
15575       gtk_tree_view_get_cursor (tree_view, &tmppath, NULL);
15576
15577       if (!tmppath)
15578         return FALSE;
15579     }
15580   else
15581     {
15582       gtk_tree_view_convert_widget_to_bin_window_coords (tree_view, *x, *y,
15583                                                          x, y);
15584
15585       if (!gtk_tree_view_get_path_at_pos (tree_view, *x, *y,
15586                                           &tmppath, NULL, NULL, NULL))
15587         return FALSE;
15588     }
15589
15590   if (model)
15591     *model = gtk_tree_view_get_model (tree_view);
15592
15593   if (iter)
15594     gtk_tree_model_get_iter (gtk_tree_view_get_model (tree_view),
15595                              iter, tmppath);
15596
15597   if (path)
15598     *path = tmppath;
15599   else
15600     gtk_tree_path_free (tmppath);
15601
15602   return TRUE;
15603 }
15604
15605 static gboolean
15606 gtk_tree_view_set_tooltip_query_cb (GtkWidget  *widget,
15607                                     gint        x,
15608                                     gint        y,
15609                                     gboolean    keyboard_tip,
15610                                     GtkTooltip *tooltip,
15611                                     gpointer    data)
15612 {
15613   GValue value = { 0, };
15614   GValue transformed = { 0, };
15615   GtkTreeIter iter;
15616   GtkTreePath *path;
15617   GtkTreeModel *model;
15618   GtkTreeView *tree_view = GTK_TREE_VIEW (widget);
15619
15620   if (!gtk_tree_view_get_tooltip_context (GTK_TREE_VIEW (widget),
15621                                           &x, &y,
15622                                           keyboard_tip,
15623                                           &model, &path, &iter))
15624     return FALSE;
15625
15626   gtk_tree_model_get_value (model, &iter,
15627                             tree_view->priv->tooltip_column, &value);
15628
15629   g_value_init (&transformed, G_TYPE_STRING);
15630
15631   if (!g_value_transform (&value, &transformed))
15632     {
15633       g_value_unset (&value);
15634       gtk_tree_path_free (path);
15635
15636       return FALSE;
15637     }
15638
15639   g_value_unset (&value);
15640
15641   if (!g_value_get_string (&transformed))
15642     {
15643       g_value_unset (&transformed);
15644       gtk_tree_path_free (path);
15645
15646       return FALSE;
15647     }
15648
15649   gtk_tooltip_set_markup (tooltip, g_value_get_string (&transformed));
15650   gtk_tree_view_set_tooltip_row (tree_view, tooltip, path);
15651
15652   gtk_tree_path_free (path);
15653   g_value_unset (&transformed);
15654
15655   return TRUE;
15656 }
15657
15658 /**
15659  * gtk_tree_view_set_tooltip_column:
15660  * @tree_view: a #GtkTreeView
15661  * @column: an integer, which is a valid column number for @tree_view's model
15662  *
15663  * If you only plan to have simple (text-only) tooltips on full rows, you
15664  * can use this function to have #GtkTreeView handle these automatically
15665  * for you. @column should be set to the column in @tree_view's model
15666  * containing the tooltip texts, or -1 to disable this feature.
15667  *
15668  * When enabled, #GtkWidget::has-tooltip will be set to %TRUE and
15669  * @tree_view will connect a #GtkWidget::query-tooltip signal handler.
15670  *
15671  * Note that the signal handler sets the text with gtk_tooltip_set_markup(),
15672  * so &amp;, &lt;, etc have to be escaped in the text.
15673  *
15674  * Since: 2.12
15675  */
15676 void
15677 gtk_tree_view_set_tooltip_column (GtkTreeView *tree_view,
15678                                   gint         column)
15679 {
15680   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
15681
15682   if (column == tree_view->priv->tooltip_column)
15683     return;
15684
15685   if (column == -1)
15686     {
15687       g_signal_handlers_disconnect_by_func (tree_view,
15688                                             gtk_tree_view_set_tooltip_query_cb,
15689                                             NULL);
15690       gtk_widget_set_has_tooltip (GTK_WIDGET (tree_view), FALSE);
15691     }
15692   else
15693     {
15694       if (tree_view->priv->tooltip_column == -1)
15695         {
15696           g_signal_connect (tree_view, "query-tooltip",
15697                             G_CALLBACK (gtk_tree_view_set_tooltip_query_cb), NULL);
15698           gtk_widget_set_has_tooltip (GTK_WIDGET (tree_view), TRUE);
15699         }
15700     }
15701
15702   tree_view->priv->tooltip_column = column;
15703   g_object_notify (G_OBJECT (tree_view), "tooltip-column");
15704 }
15705
15706 /**
15707  * gtk_tree_view_get_tooltip_column:
15708  * @tree_view: a #GtkTreeView
15709  *
15710  * Returns the column of @tree_view's model which is being used for
15711  * displaying tooltips on @tree_view's rows.
15712  *
15713  * Return value: the index of the tooltip column that is currently being
15714  * used, or -1 if this is disabled.
15715  *
15716  * Since: 2.12
15717  */
15718 gint
15719 gtk_tree_view_get_tooltip_column (GtkTreeView *tree_view)
15720 {
15721   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), 0);
15722
15723   return tree_view->priv->tooltip_column;
15724 }