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

   1 /* gtktreeview.c
   2  * Copyright (C) 2000  Red Hat, Inc.,  Jonathan Blandford <jrb@redhat.com>
   3  *
   4  * This library is free software; you can redistribute it and/or
   5  * modify it under the terms of the GNU Library General Public
   6  * License as published by the Free Software Foundation; either
   7  * version 2 of the License, or (at your option) any later version.
   8  *
   9  * This library is distributed in the hope that it will be useful,
  10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  12  * Library General Public License for more details.
  13  *
  14  * You should have received a copy of the GNU Library General Public
  15  * License along with this library; if not, write to the
  16  * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
  17  * Boston, MA 02111-1307, USA.
  18  */
  19
  20
  21 #include "config.h"
  22 #include <string.h>
  23 #include <gdk/gdkkeysyms.h>
  24
  25 #include "gtktreeview.h"
  26 #include "gtkrbtree.h"
  27 #include "gtktreednd.h"
  28 #include "gtktreeprivate.h"
  29 #include "gtkcellrenderer.h"
  30 #include "gtkextendedlayout.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 "gtkprivate.h"
  48 #include "gtkalias.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_expose               (GtkWidget        *widget,
 174                                                     GdkEventExpose   *event);
 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                                                               const GdkRectangle *clip_rect);
 330 static void     gtk_tree_view_draw_arrow                     (GtkTreeView        *tree_view,
 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 static void     gtk_tree_view_search_position_func      (GtkTreeView      *tree_view,
 403                                                          GtkWidget        *search_dialog,
 404                                                          gpointer          user_data);
 405 static void     gtk_tree_view_search_disable_popdown    (GtkEntry         *entry,
 406                                                          GtkMenu          *menu,
 407                                                          gpointer          data);
 408 static void     gtk_tree_view_search_preedit_changed    (GtkIMContext     *im_context,
 409                                                          GtkTreeView      *tree_view);
 410 static void     gtk_tree_view_search_activate           (GtkEntry         *entry,
 411                                                          GtkTreeView      *tree_view);
 412 static gboolean gtk_tree_view_real_search_enable_popdown(gpointer          data);
 413 static void     gtk_tree_view_search_enable_popdown     (GtkWidget        *widget,
 414                                                          gpointer          data);
 415 static gboolean gtk_tree_view_search_delete_event       (GtkWidget        *widget,
 416                                                          GdkEventAny      *event,
 417                                                          GtkTreeView      *tree_view);
 418 static gboolean gtk_tree_view_search_button_press_event (GtkWidget        *widget,
 419                                                          GdkEventButton   *event,
 420                                                          GtkTreeView      *tree_view);
 421 static gboolean gtk_tree_view_search_scroll_event       (GtkWidget        *entry,
 422                                                          GdkEventScroll   *event,
 423                                                          GtkTreeView      *tree_view);
 424 static gboolean gtk_tree_view_search_key_press_event    (GtkWidget        *entry,
 425                                                          GdkEventKey      *event,
 426                                                          GtkTreeView      *tree_view);
 427 static gboolean gtk_tree_view_search_move               (GtkWidget        *window,
 428                                                          GtkTreeView      *tree_view,
 429                                                          gboolean          up);
 430 static gboolean gtk_tree_view_search_equal_func         (GtkTreeModel     *model,
 431                                                          gint              column,
 432                                                          const gchar      *key,
 433                                                          GtkTreeIter      *iter,
 434                                                          gpointer          search_data);
 435 static gboolean gtk_tree_view_search_iter               (GtkTreeModel     *model,
 436                                                          GtkTreeSelection *selection,
 437                                                          GtkTreeIter      *iter,
 438                                                          const gchar      *text,
 439                                                          gint             *count,
 440                                                          gint              n);
 441 static void     gtk_tree_view_search_init               (GtkWidget        *entry,
 442                                                          GtkTreeView      *tree_view);
 443 static void     gtk_tree_view_put                       (GtkTreeView      *tree_view,
 444                                                          GtkWidget        *child_widget,
 445                                                          gint              x,
 446                                                          gint              y,
 447                                                          gint              width,
 448                                                          gint              height);
 449 static gboolean gtk_tree_view_start_editing             (GtkTreeView      *tree_view,
 450                                                          GtkTreePath      *cursor_path);
 451 static void gtk_tree_view_real_start_editing (GtkTreeView       *tree_view,
 452                                               GtkTreeViewColumn *column,
 453                                               GtkTreePath       *path,
 454                                               GtkCellEditable   *cell_editable,
 455                                               GdkRectangle      *cell_area,
 456                                               GdkEvent          *event,
 457                                               guint              flags);
 458 static void gtk_tree_view_stop_editing                  (GtkTreeView *tree_view,
 459                                                          gboolean     cancel_editing);
 460 static gboolean gtk_tree_view_real_start_interactive_search (GtkTreeView *tree_view,
 461                                                              gboolean     keybinding);
 462 static gboolean gtk_tree_view_start_interactive_search      (GtkTreeView *tree_view);
 463 static GtkTreeViewColumn *gtk_tree_view_get_drop_column (GtkTreeView       *tree_view,
 464                                                          GtkTreeViewColumn *column,
 465                                                          gint               drop_position);
 466
 467 /* GtkBuildable */
 468 static void gtk_tree_view_buildable_add_child (GtkBuildable *tree_view,
 469                                                GtkBuilder  *builder,
 470                                                GObject     *child,
 471                                                const gchar *type);
 472 static void gtk_tree_view_buildable_init      (GtkBuildableIface *iface);
 473 static void gtk_tree_view_extended_layout_init (GtkExtendedLayoutIface *iface);
 474
 475 static gboolean scroll_row_timeout                   (gpointer     data);
 476 static void     add_scroll_timeout                   (GtkTreeView *tree_view);
 477 static void     remove_scroll_timeout                (GtkTreeView *tree_view);
 478
 479 static guint tree_view_signals [LAST_SIGNAL] = { 0 };
 480
 481 \f
 482
 483 /* GType Methods
 484  */
 485
 486 G_DEFINE_TYPE_WITH_CODE (GtkTreeView, gtk_tree_view, GTK_TYPE_CONTAINER,
 487                          G_IMPLEMENT_INTERFACE (GTK_TYPE_BUILDABLE,
 488                                                 gtk_tree_view_buildable_init)
 489                          G_IMPLEMENT_INTERFACE (GTK_TYPE_EXTENDED_LAYOUT,
 490                                                 gtk_tree_view_extended_layout_init))
 491
 492
 493 static void
 494 gtk_tree_view_class_init (GtkTreeViewClass *class)
 495 {
 496   GObjectClass *o_class;
 497   GtkObjectClass *object_class;
 498   GtkWidgetClass *widget_class;
 499   GtkContainerClass *container_class;
 500   GtkBindingSet *binding_set;
 501
 502   binding_set = gtk_binding_set_by_class (class);
 503
 504   o_class = (GObjectClass *) class;
 505   object_class = (GtkObjectClass *) class;
 506   widget_class = (GtkWidgetClass *) class;
 507   container_class = (GtkContainerClass *) class;
 508
 509   /* GObject signals */
 510   o_class->set_property = gtk_tree_view_set_property;
 511   o_class->get_property = gtk_tree_view_get_property;
 512   o_class->finalize = gtk_tree_view_finalize;
 513
 514   /* GtkObject signals */
 515   object_class->destroy = gtk_tree_view_destroy;
 516
 517   /* GtkWidget signals */
 518   widget_class->map = gtk_tree_view_map;
 519   widget_class->realize = gtk_tree_view_realize;
 520   widget_class->unrealize = gtk_tree_view_unrealize;
 521   widget_class->size_request = gtk_tree_view_size_request;
 522   widget_class->size_allocate = gtk_tree_view_size_allocate;
 523   widget_class->button_press_event = gtk_tree_view_button_press;
 524   widget_class->button_release_event = gtk_tree_view_button_release;
 525   widget_class->grab_broken_event = gtk_tree_view_grab_broken;
 526   /*widget_class->configure_event = gtk_tree_view_configure;*/
 527   widget_class->motion_notify_event = gtk_tree_view_motion;
 528   widget_class->expose_event = gtk_tree_view_expose;
 529   widget_class->key_press_event = gtk_tree_view_key_press;
 530   widget_class->key_release_event = gtk_tree_view_key_release;
 531   widget_class->enter_notify_event = gtk_tree_view_enter_notify;
 532   widget_class->leave_notify_event = gtk_tree_view_leave_notify;
 533   widget_class->focus_out_event = gtk_tree_view_focus_out;
 534   widget_class->drag_begin = gtk_tree_view_drag_begin;
 535   widget_class->drag_end = gtk_tree_view_drag_end;
 536   widget_class->drag_data_get = gtk_tree_view_drag_data_get;
 537   widget_class->drag_data_delete = gtk_tree_view_drag_data_delete;
 538   widget_class->drag_leave = gtk_tree_view_drag_leave;
 539   widget_class->drag_motion = gtk_tree_view_drag_motion;
 540   widget_class->drag_drop = gtk_tree_view_drag_drop;
 541   widget_class->drag_data_received = gtk_tree_view_drag_data_received;
 542   widget_class->focus = gtk_tree_view_focus;
 543   widget_class->grab_focus = gtk_tree_view_grab_focus;
 544   widget_class->style_set = gtk_tree_view_style_set;
 545   widget_class->grab_notify = gtk_tree_view_grab_notify;
 546   widget_class->state_changed = gtk_tree_view_state_changed;
 547
 548   /* GtkContainer signals */
 549   container_class->remove = gtk_tree_view_remove;
 550   container_class->forall = gtk_tree_view_forall;
 551   container_class->set_focus_child = gtk_tree_view_set_focus_child;
 552
 553   class->set_scroll_adjustments = gtk_tree_view_set_adjustments;
 554   class->move_cursor = gtk_tree_view_real_move_cursor;
 555   class->select_all = gtk_tree_view_real_select_all;
 556   class->unselect_all = gtk_tree_view_real_unselect_all;
 557   class->select_cursor_row = gtk_tree_view_real_select_cursor_row;
 558   class->toggle_cursor_row = gtk_tree_view_real_toggle_cursor_row;
 559   class->expand_collapse_cursor_row = gtk_tree_view_real_expand_collapse_cursor_row;
 560   class->select_cursor_parent = gtk_tree_view_real_select_cursor_parent;
 561   class->start_interactive_search = gtk_tree_view_start_interactive_search;
 562
 563   /* Properties */
 564
 565   g_object_class_install_property (o_class,
 566                                    PROP_MODEL,
 567                                    g_param_spec_object ("model",
 568                                                         P_("TreeView Model"),
 569                                                         P_("The model for the tree view"),
 570                                                         GTK_TYPE_TREE_MODEL,
 571                                                         GTK_PARAM_READWRITE));
 572
 573   g_object_class_install_property (o_class,
 574                                    PROP_HADJUSTMENT,
 575                                    g_param_spec_object ("hadjustment",
 576                                                         P_("Horizontal Adjustment"),
 577                                                         P_("Horizontal Adjustment for the widget"),
 578                                                         GTK_TYPE_ADJUSTMENT,
 579                                                         GTK_PARAM_READWRITE));
 580
 581   g_object_class_install_property (o_class,
 582                                    PROP_VADJUSTMENT,
 583                                    g_param_spec_object ("vadjustment",
 584                                                         P_("Vertical Adjustment"),
 585                                                         P_("Vertical Adjustment for the widget"),
 586                                                         GTK_TYPE_ADJUSTMENT,
 587                                                         GTK_PARAM_READWRITE));
 588
 589   g_object_class_install_property (o_class,
 590                                    PROP_HEADERS_VISIBLE,
 591                                    g_param_spec_boolean ("headers-visible",
 592                                                          P_("Headers Visible"),
 593                                                          P_("Show the column header buttons"),
 594                                                          TRUE,
 595                                                          GTK_PARAM_READWRITE));
 596
 597   g_object_class_install_property (o_class,
 598                                    PROP_HEADERS_CLICKABLE,
 599                                    g_param_spec_boolean ("headers-clickable",
 600                                                          P_("Headers Clickable"),
 601                                                          P_("Column headers respond to click events"),
 602                                                          TRUE,
 603                                                          GTK_PARAM_READWRITE));
 604
 605   g_object_class_install_property (o_class,
 606                                    PROP_EXPANDER_COLUMN,
 607                                    g_param_spec_object ("expander-column",
 608                                                         P_("Expander Column"),
 609                                                         P_("Set the column for the expander column"),
 610                                                         GTK_TYPE_TREE_VIEW_COLUMN,
 611                                                         GTK_PARAM_READWRITE));
 612
 613   g_object_class_install_property (o_class,
 614                                    PROP_REORDERABLE,
 615                                    g_param_spec_boolean ("reorderable",
 616                                                          P_("Reorderable"),
 617                                                          P_("View is reorderable"),
 618                                                          FALSE,
 619                                                          GTK_PARAM_READWRITE));
 620
 621   g_object_class_install_property (o_class,
 622                                    PROP_RULES_HINT,
 623                                    g_param_spec_boolean ("rules-hint",
 624                                                          P_("Rules Hint"),
 625                                                          P_("Set a hint to the theme engine to draw rows in alternating colors"),
 626                                                          FALSE,
 627                                                          GTK_PARAM_READWRITE));
 628
 629     g_object_class_install_property (o_class,
 630                                      PROP_ENABLE_SEARCH,
 631                                      g_param_spec_boolean ("enable-search",
 632                                                            P_("Enable Search"),
 633                                                            P_("View allows user to search through columns interactively"),
 634                                                            TRUE,
 635                                                            GTK_PARAM_READWRITE));
 636
 637     g_object_class_install_property (o_class,
 638                                      PROP_SEARCH_COLUMN,
 639                                      g_param_spec_int ("search-column",
 640                                                        P_("Search Column"),
 641                                                        P_("Model column to search through during interactive search"),
 642                                                        -1,
 643                                                        G_MAXINT,
 644                                                        -1,
 645                                                        GTK_PARAM_READWRITE));
 646
 647     /**
 648      * GtkTreeView:fixed-height-mode:
 649      *
 650      * Setting the ::fixed-height-mode property to %TRUE speeds up
 651      * #GtkTreeView by assuming that all rows have the same height.
 652      * Only enable this option if all rows are the same height.
 653      * Please see gtk_tree_view_set_fixed_height_mode() for more
 654      * information on this option.
 655      *
 656      * Since: 2.4
 657      **/
 658     g_object_class_install_property (o_class,
 659                                      PROP_FIXED_HEIGHT_MODE,
 660                                      g_param_spec_boolean ("fixed-height-mode",
 661                                                            P_("Fixed Height Mode"),
 662                                                            P_("Speeds up GtkTreeView by assuming that all rows have the same height"),
 663                                                            FALSE,
 664                                                            GTK_PARAM_READWRITE));
 665
 666     /**
 667      * GtkTreeView:hover-selection:
 668      *
 669      * Enables of disables the hover selection mode of @tree_view.
 670      * Hover selection makes the selected row follow the pointer.
 671      * Currently, this works only for the selection modes
 672      * %GTK_SELECTION_SINGLE and %GTK_SELECTION_BROWSE.
 673      *
 674      * This mode is primarily intended for treeviews in popups, e.g.
 675      * in #GtkComboBox or #GtkEntryCompletion.
 676      *
 677      * Since: 2.6
 678      */
 679     g_object_class_install_property (o_class,
 680                                      PROP_HOVER_SELECTION,
 681                                      g_param_spec_boolean ("hover-selection",
 682                                                            P_("Hover Selection"),
 683                                                            P_("Whether the selection should follow the pointer"),
 684                                                            FALSE,
 685                                                            GTK_PARAM_READWRITE));
 686
 687     /**
 688      * GtkTreeView:hover-expand:
 689      *
 690      * Enables of disables the hover expansion mode of @tree_view.
 691      * Hover expansion makes rows expand or collapse if the pointer moves
 692      * over them.
 693      *
 694      * This mode is primarily intended for treeviews in popups, e.g.
 695      * in #GtkComboBox or #GtkEntryCompletion.
 696      *
 697      * Since: 2.6
 698      */
 699     g_object_class_install_property (o_class,
 700                                      PROP_HOVER_EXPAND,
 701                                      g_param_spec_boolean ("hover-expand",
 702                                                            P_("Hover Expand"),
 703                                                            P_("Whether rows should be expanded/collapsed when the pointer moves over them"),
 704                                                            FALSE,
 705                                                            GTK_PARAM_READWRITE));
 706
 707     /**
 708      * GtkTreeView:show-expanders:
 709      *
 710      * %TRUE if the view has expanders.
 711      *
 712      * Since: 2.12
 713      */
 714     g_object_class_install_property (o_class,
 715                                      PROP_SHOW_EXPANDERS,
 716                                      g_param_spec_boolean ("show-expanders",
 717                                                            P_("Show Expanders"),
 718                                                            P_("View has expanders"),
 719                                                            TRUE,
 720                                                            GTK_PARAM_READWRITE));
 721
 722     /**
 723      * GtkTreeView:level-indentation:
 724      *
 725      * Extra indentation for each level.
 726      *
 727      * Since: 2.12
 728      */
 729     g_object_class_install_property (o_class,
 730                                      PROP_LEVEL_INDENTATION,
 731                                      g_param_spec_int ("level-indentation",
 732                                                        P_("Level Indentation"),
 733                                                        P_("Extra indentation for each level"),
 734                                                        0,
 735                                                        G_MAXINT,
 736                                                        0,
 737                                                        GTK_PARAM_READWRITE));
 738
 739     g_object_class_install_property (o_class,
 740                                      PROP_RUBBER_BANDING,
 741                                      g_param_spec_boolean ("rubber-banding",
 742                                                            P_("Rubber Banding"),
 743                                                            P_("Whether to enable selection of multiple items by dragging the mouse pointer"),
 744                                                            FALSE,
 745                                                            GTK_PARAM_READWRITE));
 746
 747     g_object_class_install_property (o_class,
 748                                      PROP_ENABLE_GRID_LINES,
 749                                      g_param_spec_enum ("enable-grid-lines",
 750                                                         P_("Enable Grid Lines"),
 751                                                         P_("Whether grid lines should be drawn in the tree view"),
 752                                                         GTK_TYPE_TREE_VIEW_GRID_LINES,
 753                                                         GTK_TREE_VIEW_GRID_LINES_NONE,
 754                                                         GTK_PARAM_READWRITE));
 755
 756     g_object_class_install_property (o_class,
 757                                      PROP_ENABLE_TREE_LINES,
 758                                      g_param_spec_boolean ("enable-tree-lines",
 759                                                            P_("Enable Tree Lines"),
 760                                                            P_("Whether tree lines should be drawn in the tree view"),
 761                                                            FALSE,
 762                                                            GTK_PARAM_READWRITE));
 763
 764     g_object_class_install_property (o_class,
 765                                      PROP_TOOLTIP_COLUMN,
 766                                      g_param_spec_int ("tooltip-column",
 767                                                        P_("Tooltip Column"),
 768                                                        P_("The column in the model containing the tooltip texts for the rows"),
 769                                                        -1,
 770                                                        G_MAXINT,
 771                                                        -1,
 772                                                        GTK_PARAM_READWRITE));
 773
 774   /* Style properties */
 775 #define _TREE_VIEW_EXPANDER_SIZE 12
 776 #define _TREE_VIEW_VERTICAL_SEPARATOR 2
 777 #define _TREE_VIEW_HORIZONTAL_SEPARATOR 2
 778
 779   gtk_widget_class_install_style_property (widget_class,
 780                                            g_param_spec_int ("expander-size",
 781                                                              P_("Expander Size"),
 782                                                              P_("Size of the expander arrow"),
 783                                                              0,
 784                                                              G_MAXINT,
 785                                                              _TREE_VIEW_EXPANDER_SIZE,
 786                                                              GTK_PARAM_READABLE));
 787
 788   gtk_widget_class_install_style_property (widget_class,
 789                                            g_param_spec_int ("vertical-separator",
 790                                                              P_("Vertical Separator Width"),
 791                                                              P_("Vertical space between cells.  Must be an even number"),
 792                                                              0,
 793                                                              G_MAXINT,
 794                                                              _TREE_VIEW_VERTICAL_SEPARATOR,
 795                                                              GTK_PARAM_READABLE));
 796
 797   gtk_widget_class_install_style_property (widget_class,
 798                                            g_param_spec_int ("horizontal-separator",
 799                                                              P_("Horizontal Separator Width"),
 800                                                              P_("Horizontal space between cells.  Must be an even number"),
 801                                                              0,
 802                                                              G_MAXINT,
 803                                                              _TREE_VIEW_HORIZONTAL_SEPARATOR,
 804                                                              GTK_PARAM_READABLE));
 805
 806   gtk_widget_class_install_style_property (widget_class,
 807                                            g_param_spec_boolean ("allow-rules",
 808                                                                  P_("Allow Rules"),
 809                                                                  P_("Allow drawing of alternating color rows"),
 810                                                                  TRUE,
 811                                                                  GTK_PARAM_READABLE));
 812
 813   gtk_widget_class_install_style_property (widget_class,
 814                                            g_param_spec_boolean ("indent-expanders",
 815                                                                  P_("Indent Expanders"),
 816                                                                  P_("Make the expanders indented"),
 817                                                                  TRUE,
 818                                                                  GTK_PARAM_READABLE));
 819
 820   gtk_widget_class_install_style_property (widget_class,
 821                                            g_param_spec_boxed ("even-row-color",
 822                                                                P_("Even Row Color"),
 823                                                                P_("Color to use for even rows"),
 824                                                                GDK_TYPE_COLOR,
 825                                                                GTK_PARAM_READABLE));
 826
 827   gtk_widget_class_install_style_property (widget_class,
 828                                            g_param_spec_boxed ("odd-row-color",
 829                                                                P_("Odd Row Color"),
 830                                                                P_("Color to use for odd rows"),
 831                                                                GDK_TYPE_COLOR,
 832                                                                GTK_PARAM_READABLE));
 833
 834   gtk_widget_class_install_style_property (widget_class,
 835                                            g_param_spec_boolean ("row-ending-details",
 836                                                                  P_("Row Ending details"),
 837                                                                  P_("Enable extended row background theming"),
 838                                                                  FALSE,
 839                                                                  GTK_PARAM_READABLE));
 840
 841   gtk_widget_class_install_style_property (widget_class,
 842                                            g_param_spec_int ("grid-line-width",
 843                                                              P_("Grid line width"),
 844                                                              P_("Width, in pixels, of the tree view grid lines"),
 845                                                              0, G_MAXINT, 1,
 846                                                              GTK_PARAM_READABLE));
 847
 848   gtk_widget_class_install_style_property (widget_class,
 849                                            g_param_spec_int ("tree-line-width",
 850                                                              P_("Tree line width"),
 851                                                              P_("Width, in pixels, of the tree view lines"),
 852                                                              0, G_MAXINT, 1,
 853                                                              GTK_PARAM_READABLE));
 854
 855   gtk_widget_class_install_style_property (widget_class,
 856                                            g_param_spec_string ("grid-line-pattern",
 857                                                                 P_("Grid line pattern"),
 858                                                                 P_("Dash pattern used to draw the tree view grid lines"),
 859                                                                 "\1\1",
 860                                                                 GTK_PARAM_READABLE));
 861
 862   gtk_widget_class_install_style_property (widget_class,
 863                                            g_param_spec_string ("tree-line-pattern",
 864                                                                 P_("Tree line pattern"),
 865                                                                 P_("Dash pattern used to draw the tree view lines"),
 866                                                                 "\1\1",
 867                                                                 GTK_PARAM_READABLE));
 868
 869   /* Signals */
 870   /**
 871    * GtkTreeView::set-scroll-adjustments
 872    * @horizontal: the horizontal #GtkAdjustment
 873    * @vertical: the vertical #GtkAdjustment
 874    *
 875    * Set the scroll adjustments for the tree view. Usually scrolled containers
 876    * like #GtkScrolledWindow will emit this signal to connect two instances
 877    * of #GtkScrollbar to the scroll directions of the #GtkTreeView.
 878    */
 879   widget_class->set_scroll_adjustments_signal =
 880     g_signal_new (I_("set-scroll-adjustments"),
 881                   G_TYPE_FROM_CLASS (o_class),
 882                   G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
 883                   G_STRUCT_OFFSET (GtkTreeViewClass, set_scroll_adjustments),
 884                   NULL, NULL,
 885                   _gtk_marshal_VOID__OBJECT_OBJECT,
 886                   G_TYPE_NONE, 2,
 887                   GTK_TYPE_ADJUSTMENT,
 888                   GTK_TYPE_ADJUSTMENT);
 889
 890   /**
 891    * GtkTreeView::row-activated:
 892    * @tree_view: the object on which the signal is emitted
 893    * @path: the #GtkTreePath for the activated row
 894    * @column: the #GtkTreeViewColumn in which the activation occurred
 895    *
 896    * The "row-activated" signal is emitted when the method
 897    * gtk_tree_view_row_activated() is called or the user double clicks
 898    * a treeview row. It is also emitted when a non-editable row is
 899    * selected and one of the keys: Space, Shift+Space, Return or
 900    * Enter is pressed.
 901    *
 902    * For selection handling refer to the <link linkend="TreeWidget">tree
 903    * widget conceptual overview</link> as well as #GtkTreeSelection.
 904    */
 905   tree_view_signals[ROW_ACTIVATED] =
 906     g_signal_new (I_("row-activated"),
 907                   G_TYPE_FROM_CLASS (o_class),
 908                   G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
 909                   G_STRUCT_OFFSET (GtkTreeViewClass, row_activated),
 910                   NULL, NULL,
 911                   _gtk_marshal_VOID__BOXED_OBJECT,
 912                   G_TYPE_NONE, 2,
 913                   GTK_TYPE_TREE_PATH,
 914                   GTK_TYPE_TREE_VIEW_COLUMN);
 915
 916   /**
 917    * GtkTreeView::test-expand-row:
 918    * @tree_view: the object on which the signal is emitted
 919    * @iter: the tree iter of the row to expand
 920    * @path: a tree path that points to the row
 921    *
 922    * The given row is about to be expanded (show its children nodes). Use this
 923    * signal if you need to control the expandability of individual rows.
 924    *
 925    * Returns: %FALSE to allow expansion, %TRUE to reject
 926    */
 927   tree_view_signals[TEST_EXPAND_ROW] =
 928     g_signal_new (I_("test-expand-row"),
 929                   G_TYPE_FROM_CLASS (o_class),
 930                   G_SIGNAL_RUN_LAST,
 931                   G_STRUCT_OFFSET (GtkTreeViewClass, test_expand_row),
 932                   _gtk_boolean_handled_accumulator, NULL,
 933                   _gtk_marshal_BOOLEAN__BOXED_BOXED,
 934                   G_TYPE_BOOLEAN, 2,
 935                   GTK_TYPE_TREE_ITER,
 936                   GTK_TYPE_TREE_PATH);
 937
 938   /**
 939    * GtkTreeView::test-collapse-row:
 940    * @tree_view: the object on which the signal is emitted
 941    * @iter: the tree iter of the row to collapse
 942    * @path: a tree path that points to the row
 943    *
 944    * The given row is about to be collapsed (hide its children nodes). Use this
 945    * signal if you need to control the collapsibility of individual rows.
 946    *
 947    * Returns: %FALSE to allow collapsing, %TRUE to reject
 948    */
 949   tree_view_signals[TEST_COLLAPSE_ROW] =
 950     g_signal_new (I_("test-collapse-row"),
 951                   G_TYPE_FROM_CLASS (o_class),
 952                   G_SIGNAL_RUN_LAST,
 953                   G_STRUCT_OFFSET (GtkTreeViewClass, test_collapse_row),
 954                   _gtk_boolean_handled_accumulator, NULL,
 955                   _gtk_marshal_BOOLEAN__BOXED_BOXED,
 956                   G_TYPE_BOOLEAN, 2,
 957                   GTK_TYPE_TREE_ITER,
 958                   GTK_TYPE_TREE_PATH);
 959
 960   /**
 961    * GtkTreeView::row-expanded:
 962    * @tree_view: the object on which the signal is emitted
 963    * @iter: the tree iter of the expanded row
 964    * @path: a tree path that points to the row
 965    *
 966    * The given row has been expanded (child nodes are shown).
 967    */
 968   tree_view_signals[ROW_EXPANDED] =
 969     g_signal_new (I_("row-expanded"),
 970                   G_TYPE_FROM_CLASS (o_class),
 971                   G_SIGNAL_RUN_LAST,
 972                   G_STRUCT_OFFSET (GtkTreeViewClass, row_expanded),
 973                   NULL, NULL,
 974                   _gtk_marshal_VOID__BOXED_BOXED,
 975                   G_TYPE_NONE, 2,
 976                   GTK_TYPE_TREE_ITER,
 977                   GTK_TYPE_TREE_PATH);
 978
 979   /**
 980    * GtkTreeView::row-collapsed:
 981    * @tree_view: the object on which the signal is emitted
 982    * @iter: the tree iter of the collapsed row
 983    * @path: a tree path that points to the row
 984    *
 985    * The given row has been collapsed (child nodes are hidden).
 986    */
 987   tree_view_signals[ROW_COLLAPSED] =
 988     g_signal_new (I_("row-collapsed"),
 989                   G_TYPE_FROM_CLASS (o_class),
 990                   G_SIGNAL_RUN_LAST,
 991                   G_STRUCT_OFFSET (GtkTreeViewClass, row_collapsed),
 992                   NULL, NULL,
 993                   _gtk_marshal_VOID__BOXED_BOXED,
 994                   G_TYPE_NONE, 2,
 995                   GTK_TYPE_TREE_ITER,
 996                   GTK_TYPE_TREE_PATH);
 997
 998   /**
 999    * GtkTreeView::columns-changed:
1000    * @tree_view: the object on which the signal is emitted
1001    *
1002    * The number of columns of the treeview has changed.
1003    */
1004   tree_view_signals[COLUMNS_CHANGED] =
1005     g_signal_new (I_("columns-changed"),
1006                   G_TYPE_FROM_CLASS (o_class),
1007                   G_SIGNAL_RUN_LAST,
1008                   G_STRUCT_OFFSET (GtkTreeViewClass, columns_changed),
1009                   NULL, NULL,
1010                   _gtk_marshal_VOID__VOID,
1011                   G_TYPE_NONE, 0);
1012
1013   /**
1014    * GtkTreeView::cursor-changed:
1015    * @tree_view: the object on which the signal is emitted
1016    *
1017    * The position of the cursor (focused cell) has changed.
1018    */
1019   tree_view_signals[CURSOR_CHANGED] =
1020     g_signal_new (I_("cursor-changed"),
1021                   G_TYPE_FROM_CLASS (o_class),
1022                   G_SIGNAL_RUN_LAST,
1023                   G_STRUCT_OFFSET (GtkTreeViewClass, cursor_changed),
1024                   NULL, NULL,
1025                   _gtk_marshal_VOID__VOID,
1026                   G_TYPE_NONE, 0);
1027
1028   tree_view_signals[MOVE_CURSOR] =
1029     g_signal_new (I_("move-cursor"),
1030                   G_TYPE_FROM_CLASS (object_class),
1031                   G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
1032                   G_STRUCT_OFFSET (GtkTreeViewClass, move_cursor),
1033                   NULL, NULL,
1034                   _gtk_marshal_BOOLEAN__ENUM_INT,
1035                   G_TYPE_BOOLEAN, 2,
1036                   GTK_TYPE_MOVEMENT_STEP,
1037                   G_TYPE_INT);
1038
1039   tree_view_signals[SELECT_ALL] =
1040     g_signal_new (I_("select-all"),
1041                   G_TYPE_FROM_CLASS (object_class),
1042                   G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
1043                   G_STRUCT_OFFSET (GtkTreeViewClass, select_all),
1044                   NULL, NULL,
1045                   _gtk_marshal_BOOLEAN__VOID,
1046                   G_TYPE_BOOLEAN, 0);
1047
1048   tree_view_signals[UNSELECT_ALL] =
1049     g_signal_new (I_("unselect-all"),
1050                   G_TYPE_FROM_CLASS (object_class),
1051                   G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
1052                   G_STRUCT_OFFSET (GtkTreeViewClass, unselect_all),
1053                   NULL, NULL,
1054                   _gtk_marshal_BOOLEAN__VOID,
1055                   G_TYPE_BOOLEAN, 0);
1056
1057   tree_view_signals[SELECT_CURSOR_ROW] =
1058     g_signal_new (I_("select-cursor-row"),
1059                   G_TYPE_FROM_CLASS (object_class),
1060                   G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
1061                   G_STRUCT_OFFSET (GtkTreeViewClass, select_cursor_row),
1062                   NULL, NULL,
1063                   _gtk_marshal_BOOLEAN__BOOLEAN,
1064                   G_TYPE_BOOLEAN, 1,
1065                   G_TYPE_BOOLEAN);
1066
1067   tree_view_signals[TOGGLE_CURSOR_ROW] =
1068     g_signal_new (I_("toggle-cursor-row"),
1069                   G_TYPE_FROM_CLASS (object_class),
1070                   G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
1071                   G_STRUCT_OFFSET (GtkTreeViewClass, toggle_cursor_row),
1072                   NULL, NULL,
1073                   _gtk_marshal_BOOLEAN__VOID,
1074                   G_TYPE_BOOLEAN, 0);
1075
1076   tree_view_signals[EXPAND_COLLAPSE_CURSOR_ROW] =
1077     g_signal_new (I_("expand-collapse-cursor-row"),
1078                   G_TYPE_FROM_CLASS (object_class),
1079                   G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
1080                   G_STRUCT_OFFSET (GtkTreeViewClass, expand_collapse_cursor_row),
1081                   NULL, NULL,
1082                   _gtk_marshal_BOOLEAN__BOOLEAN_BOOLEAN_BOOLEAN,
1083                   G_TYPE_BOOLEAN, 3,
1084                   G_TYPE_BOOLEAN,
1085                   G_TYPE_BOOLEAN,
1086                   G_TYPE_BOOLEAN);
1087
1088   tree_view_signals[SELECT_CURSOR_PARENT] =
1089     g_signal_new (I_("select-cursor-parent"),
1090                   G_TYPE_FROM_CLASS (object_class),
1091                   G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
1092                   G_STRUCT_OFFSET (GtkTreeViewClass, select_cursor_parent),
1093                   NULL, NULL,
1094                   _gtk_marshal_BOOLEAN__VOID,
1095                   G_TYPE_BOOLEAN, 0);
1096
1097   tree_view_signals[START_INTERACTIVE_SEARCH] =
1098     g_signal_new (I_("start-interactive-search"),
1099                   G_TYPE_FROM_CLASS (object_class),
1100                   G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
1101                   G_STRUCT_OFFSET (GtkTreeViewClass, start_interactive_search),
1102                   NULL, NULL,
1103                   _gtk_marshal_BOOLEAN__VOID,
1104                   G_TYPE_BOOLEAN, 0);
1105
1106   /* Key bindings */
1107   gtk_tree_view_add_move_binding (binding_set, GDK_Up, 0, TRUE,
1108                                   GTK_MOVEMENT_DISPLAY_LINES, -1);
1109   gtk_tree_view_add_move_binding (binding_set, GDK_KP_Up, 0, TRUE,
1110                                   GTK_MOVEMENT_DISPLAY_LINES, -1);
1111
1112   gtk_tree_view_add_move_binding (binding_set, GDK_Down, 0, TRUE,
1113                                   GTK_MOVEMENT_DISPLAY_LINES, 1);
1114   gtk_tree_view_add_move_binding (binding_set, GDK_KP_Down, 0, TRUE,
1115                                   GTK_MOVEMENT_DISPLAY_LINES, 1);
1116
1117   gtk_tree_view_add_move_binding (binding_set, GDK_p, GDK_CONTROL_MASK, FALSE,
1118                                   GTK_MOVEMENT_DISPLAY_LINES, -1);
1119
1120   gtk_tree_view_add_move_binding (binding_set, GDK_n, GDK_CONTROL_MASK, FALSE,
1121                                   GTK_MOVEMENT_DISPLAY_LINES, 1);
1122
1123   gtk_tree_view_add_move_binding (binding_set, GDK_Home, 0, TRUE,
1124                                   GTK_MOVEMENT_BUFFER_ENDS, -1);
1125   gtk_tree_view_add_move_binding (binding_set, GDK_KP_Home, 0, TRUE,
1126                                   GTK_MOVEMENT_BUFFER_ENDS, -1);
1127
1128   gtk_tree_view_add_move_binding (binding_set, GDK_End, 0, TRUE,
1129                                   GTK_MOVEMENT_BUFFER_ENDS, 1);
1130   gtk_tree_view_add_move_binding (binding_set, GDK_KP_End, 0, TRUE,
1131                                   GTK_MOVEMENT_BUFFER_ENDS, 1);
1132
1133   gtk_tree_view_add_move_binding (binding_set, GDK_Page_Up, 0, TRUE,
1134                                   GTK_MOVEMENT_PAGES, -1);
1135   gtk_tree_view_add_move_binding (binding_set, GDK_KP_Page_Up, 0, TRUE,
1136                                   GTK_MOVEMENT_PAGES, -1);
1137
1138   gtk_tree_view_add_move_binding (binding_set, GDK_Page_Down, 0, TRUE,
1139                                   GTK_MOVEMENT_PAGES, 1);
1140   gtk_tree_view_add_move_binding (binding_set, GDK_KP_Page_Down, 0, TRUE,
1141                                   GTK_MOVEMENT_PAGES, 1);
1142
1143
1144   gtk_binding_entry_add_signal (binding_set, GDK_Right, 0, "move-cursor", 2,
1145                                 G_TYPE_ENUM, GTK_MOVEMENT_VISUAL_POSITIONS,
1146                                 G_TYPE_INT, 1);
1147
1148   gtk_binding_entry_add_signal (binding_set, GDK_Left, 0, "move-cursor", 2,
1149                                 G_TYPE_ENUM, GTK_MOVEMENT_VISUAL_POSITIONS,
1150                                 G_TYPE_INT, -1);
1151
1152   gtk_binding_entry_add_signal (binding_set, GDK_KP_Right, 0, "move-cursor", 2,
1153                                 G_TYPE_ENUM, GTK_MOVEMENT_VISUAL_POSITIONS,
1154                                 G_TYPE_INT, 1);
1155
1156   gtk_binding_entry_add_signal (binding_set, GDK_KP_Left, 0, "move-cursor", 2,
1157                                 G_TYPE_ENUM, GTK_MOVEMENT_VISUAL_POSITIONS,
1158                                 G_TYPE_INT, -1);
1159
1160   gtk_binding_entry_add_signal (binding_set, GDK_Right, GDK_CONTROL_MASK,
1161                                 "move-cursor", 2,
1162                                 G_TYPE_ENUM, GTK_MOVEMENT_VISUAL_POSITIONS,
1163                                 G_TYPE_INT, 1);
1164
1165   gtk_binding_entry_add_signal (binding_set, GDK_Left, GDK_CONTROL_MASK,
1166                                 "move-cursor", 2,
1167                                 G_TYPE_ENUM, GTK_MOVEMENT_VISUAL_POSITIONS,
1168                                 G_TYPE_INT, -1);
1169
1170   gtk_binding_entry_add_signal (binding_set, GDK_KP_Right, GDK_CONTROL_MASK,
1171                                 "move-cursor", 2,
1172                                 G_TYPE_ENUM, GTK_MOVEMENT_VISUAL_POSITIONS,
1173                                 G_TYPE_INT, 1);
1174
1175   gtk_binding_entry_add_signal (binding_set, GDK_KP_Left, GDK_CONTROL_MASK,
1176                                 "move-cursor", 2,
1177                                 G_TYPE_ENUM, GTK_MOVEMENT_VISUAL_POSITIONS,
1178                                 G_TYPE_INT, -1);
1179
1180   gtk_binding_entry_add_signal (binding_set, GDK_space, GDK_CONTROL_MASK, "toggle-cursor-row", 0);
1181   gtk_binding_entry_add_signal (binding_set, GDK_KP_Space, GDK_CONTROL_MASK, "toggle-cursor-row", 0);
1182
1183   gtk_binding_entry_add_signal (binding_set, GDK_a, GDK_CONTROL_MASK, "select-all", 0);
1184   gtk_binding_entry_add_signal (binding_set, GDK_slash, GDK_CONTROL_MASK, "select-all", 0);
1185
1186   gtk_binding_entry_add_signal (binding_set, GDK_A, GDK_CONTROL_MASK | GDK_SHIFT_MASK, "unselect-all", 0);
1187   gtk_binding_entry_add_signal (binding_set, GDK_backslash, GDK_CONTROL_MASK, "unselect-all", 0);
1188
1189   gtk_binding_entry_add_signal (binding_set, GDK_space, GDK_SHIFT_MASK, "select-cursor-row", 1,
1190                                 G_TYPE_BOOLEAN, TRUE);
1191   gtk_binding_entry_add_signal (binding_set, GDK_KP_Space, GDK_SHIFT_MASK, "select-cursor-row", 1,
1192                                 G_TYPE_BOOLEAN, TRUE);
1193
1194   gtk_binding_entry_add_signal (binding_set, GDK_space, 0, "select-cursor-row", 1,
1195                                 G_TYPE_BOOLEAN, TRUE);
1196   gtk_binding_entry_add_signal (binding_set, GDK_KP_Space, 0, "select-cursor-row", 1,
1197                                 G_TYPE_BOOLEAN, TRUE);
1198   gtk_binding_entry_add_signal (binding_set, GDK_Return, 0, "select-cursor-row", 1,
1199                                 G_TYPE_BOOLEAN, TRUE);
1200   gtk_binding_entry_add_signal (binding_set, GDK_ISO_Enter, 0, "select-cursor-row", 1,
1201                                 G_TYPE_BOOLEAN, TRUE);
1202   gtk_binding_entry_add_signal (binding_set, GDK_KP_Enter, 0, "select-cursor-row", 1,
1203                                 G_TYPE_BOOLEAN, TRUE);
1204
1205   /* expand and collapse rows */
1206   gtk_binding_entry_add_signal (binding_set, GDK_plus, 0, "expand-collapse-cursor-row", 3,
1207                                 G_TYPE_BOOLEAN, TRUE,
1208                                 G_TYPE_BOOLEAN, TRUE,
1209                                 G_TYPE_BOOLEAN, FALSE);
1210
1211   gtk_binding_entry_add_signal (binding_set, GDK_asterisk, 0,
1212                                 "expand-collapse-cursor-row", 3,
1213                                 G_TYPE_BOOLEAN, TRUE,
1214                                 G_TYPE_BOOLEAN, TRUE,
1215                                 G_TYPE_BOOLEAN, TRUE);
1216   gtk_binding_entry_add_signal (binding_set, GDK_KP_Multiply, 0,
1217                                 "expand-collapse-cursor-row", 3,
1218                                 G_TYPE_BOOLEAN, TRUE,
1219                                 G_TYPE_BOOLEAN, TRUE,
1220                                 G_TYPE_BOOLEAN, TRUE);
1221
1222   gtk_binding_entry_add_signal (binding_set, GDK_slash, 0,
1223                                 "expand-collapse-cursor-row", 3,
1224                                 G_TYPE_BOOLEAN, TRUE,
1225                                 G_TYPE_BOOLEAN, FALSE,
1226                                 G_TYPE_BOOLEAN, FALSE);
1227   gtk_binding_entry_add_signal (binding_set, GDK_KP_Divide, 0,
1228                                 "expand-collapse-cursor-row", 3,
1229                                 G_TYPE_BOOLEAN, TRUE,
1230                                 G_TYPE_BOOLEAN, FALSE,
1231                                 G_TYPE_BOOLEAN, FALSE);
1232
1233   /* Not doable on US keyboards */
1234   gtk_binding_entry_add_signal (binding_set, GDK_plus, GDK_SHIFT_MASK, "expand-collapse-cursor-row", 3,
1235                                 G_TYPE_BOOLEAN, TRUE,
1236                                 G_TYPE_BOOLEAN, TRUE,
1237                                 G_TYPE_BOOLEAN, TRUE);
1238   gtk_binding_entry_add_signal (binding_set, GDK_KP_Add, 0, "expand-collapse-cursor-row", 3,
1239                                 G_TYPE_BOOLEAN, TRUE,
1240                                 G_TYPE_BOOLEAN, TRUE,
1241                                 G_TYPE_BOOLEAN, FALSE);
1242   gtk_binding_entry_add_signal (binding_set, GDK_KP_Add, GDK_SHIFT_MASK, "expand-collapse-cursor-row", 3,
1243                                 G_TYPE_BOOLEAN, TRUE,
1244                                 G_TYPE_BOOLEAN, TRUE,
1245                                 G_TYPE_BOOLEAN, TRUE);
1246   gtk_binding_entry_add_signal (binding_set, GDK_KP_Add, GDK_SHIFT_MASK, "expand-collapse-cursor-row", 3,
1247                                 G_TYPE_BOOLEAN, TRUE,
1248                                 G_TYPE_BOOLEAN, TRUE,
1249                                 G_TYPE_BOOLEAN, TRUE);
1250   gtk_binding_entry_add_signal (binding_set, GDK_Right, GDK_SHIFT_MASK,
1251                                 "expand-collapse-cursor-row", 3,
1252                                 G_TYPE_BOOLEAN, FALSE,
1253                                 G_TYPE_BOOLEAN, TRUE,
1254                                 G_TYPE_BOOLEAN, TRUE);
1255   gtk_binding_entry_add_signal (binding_set, GDK_KP_Right, GDK_SHIFT_MASK,
1256                                 "expand-collapse-cursor-row", 3,
1257                                 G_TYPE_BOOLEAN, FALSE,
1258                                 G_TYPE_BOOLEAN, TRUE,
1259                                 G_TYPE_BOOLEAN, TRUE);
1260   gtk_binding_entry_add_signal (binding_set, GDK_Right,
1261                                 GDK_CONTROL_MASK | GDK_SHIFT_MASK,
1262                                 "expand-collapse-cursor-row", 3,
1263                                 G_TYPE_BOOLEAN, FALSE,
1264                                 G_TYPE_BOOLEAN, TRUE,
1265                                 G_TYPE_BOOLEAN, TRUE);
1266   gtk_binding_entry_add_signal (binding_set, GDK_KP_Right,
1267                                 GDK_CONTROL_MASK | GDK_SHIFT_MASK,
1268                                 "expand-collapse-cursor-row", 3,
1269                                 G_TYPE_BOOLEAN, FALSE,
1270                                 G_TYPE_BOOLEAN, TRUE,
1271                                 G_TYPE_BOOLEAN, TRUE);
1272
1273   gtk_binding_entry_add_signal (binding_set, GDK_minus, 0, "expand-collapse-cursor-row", 3,
1274                                 G_TYPE_BOOLEAN, TRUE,
1275                                 G_TYPE_BOOLEAN, FALSE,
1276                                 G_TYPE_BOOLEAN, FALSE);
1277   gtk_binding_entry_add_signal (binding_set, GDK_minus, GDK_SHIFT_MASK, "expand-collapse-cursor-row", 3,
1278                                 G_TYPE_BOOLEAN, TRUE,
1279                                 G_TYPE_BOOLEAN, FALSE,
1280                                 G_TYPE_BOOLEAN, TRUE);
1281   gtk_binding_entry_add_signal (binding_set, GDK_KP_Subtract, 0, "expand-collapse-cursor-row", 3,
1282                                 G_TYPE_BOOLEAN, TRUE,
1283                                 G_TYPE_BOOLEAN, FALSE,
1284                                 G_TYPE_BOOLEAN, FALSE);
1285   gtk_binding_entry_add_signal (binding_set, GDK_KP_Subtract, GDK_SHIFT_MASK, "expand-collapse-cursor-row", 3,
1286                                 G_TYPE_BOOLEAN, TRUE,
1287                                 G_TYPE_BOOLEAN, FALSE,
1288                                 G_TYPE_BOOLEAN, TRUE);
1289   gtk_binding_entry_add_signal (binding_set, GDK_Left, GDK_SHIFT_MASK,
1290                                 "expand-collapse-cursor-row", 3,
1291                                 G_TYPE_BOOLEAN, FALSE,
1292                                 G_TYPE_BOOLEAN, FALSE,
1293                                 G_TYPE_BOOLEAN, TRUE);
1294   gtk_binding_entry_add_signal (binding_set, GDK_KP_Left, GDK_SHIFT_MASK,
1295                                 "expand-collapse-cursor-row", 3,
1296                                 G_TYPE_BOOLEAN, FALSE,
1297                                 G_TYPE_BOOLEAN, FALSE,
1298                                 G_TYPE_BOOLEAN, TRUE);
1299   gtk_binding_entry_add_signal (binding_set, GDK_Left,
1300                                 GDK_CONTROL_MASK | GDK_SHIFT_MASK,
1301                                 "expand-collapse-cursor-row", 3,
1302                                 G_TYPE_BOOLEAN, FALSE,
1303                                 G_TYPE_BOOLEAN, FALSE,
1304                                 G_TYPE_BOOLEAN, TRUE);
1305   gtk_binding_entry_add_signal (binding_set, GDK_KP_Left,
1306                                 GDK_CONTROL_MASK | GDK_SHIFT_MASK,
1307                                 "expand-collapse-cursor-row", 3,
1308                                 G_TYPE_BOOLEAN, FALSE,
1309                                 G_TYPE_BOOLEAN, FALSE,
1310                                 G_TYPE_BOOLEAN, TRUE);
1311
1312   gtk_binding_entry_add_signal (binding_set, GDK_BackSpace, 0, "select-cursor-parent", 0);
1313   gtk_binding_entry_add_signal (binding_set, GDK_BackSpace, GDK_CONTROL_MASK, "select-cursor-parent", 0);
1314
1315   gtk_binding_entry_add_signal (binding_set, GDK_f, GDK_CONTROL_MASK, "start-interactive-search", 0);
1316
1317   gtk_binding_entry_add_signal (binding_set, GDK_F, GDK_CONTROL_MASK, "start-interactive-search", 0);
1318
1319   g_type_class_add_private (o_class, sizeof (GtkTreeViewPrivate));
1320 }
1321
1322 static void
1323 gtk_tree_view_buildable_init (GtkBuildableIface *iface)
1324 {
1325   iface->add_child = gtk_tree_view_buildable_add_child;
1326 }
1327
1328 static void
1329 gtk_tree_view_init (GtkTreeView *tree_view)
1330 {
1331   tree_view->priv = G_TYPE_INSTANCE_GET_PRIVATE (tree_view, GTK_TYPE_TREE_VIEW, GtkTreeViewPrivate);
1332
1333   gtk_widget_set_can_focus (GTK_WIDGET (tree_view), TRUE);
1334   gtk_widget_set_redraw_on_allocate (GTK_WIDGET (tree_view), FALSE);
1335
1336   tree_view->priv->flags =  GTK_TREE_VIEW_SHOW_EXPANDERS
1337                             | GTK_TREE_VIEW_DRAW_KEYFOCUS
1338                             | GTK_TREE_VIEW_HEADERS_VISIBLE;
1339
1340   /* We need some padding */
1341   tree_view->priv->dy = 0;
1342   tree_view->priv->cursor_offset = 0;
1343   tree_view->priv->n_columns = 0;
1344   tree_view->priv->header_height = 1;
1345   tree_view->priv->x_drag = 0;
1346   tree_view->priv->drag_pos = -1;
1347   tree_view->priv->header_has_focus = FALSE;
1348   tree_view->priv->pressed_button = -1;
1349   tree_view->priv->press_start_x = -1;
1350   tree_view->priv->press_start_y = -1;
1351   tree_view->priv->reorderable = FALSE;
1352   tree_view->priv->presize_handler_timer = 0;
1353   tree_view->priv->scroll_sync_timer = 0;
1354   tree_view->priv->fixed_height = -1;
1355   tree_view->priv->fixed_height_mode = FALSE;
1356   tree_view->priv->fixed_height_check = 0;
1357   gtk_tree_view_set_adjustments (tree_view, NULL, NULL);
1358   tree_view->priv->selection = _gtk_tree_selection_new_with_tree_view (tree_view);
1359   tree_view->priv->enable_search = TRUE;
1360   tree_view->priv->search_column = -1;
1361   tree_view->priv->search_position_func = gtk_tree_view_search_position_func;
1362   tree_view->priv->search_equal_func = gtk_tree_view_search_equal_func;
1363   tree_view->priv->search_custom_entry_set = FALSE;
1364   tree_view->priv->typeselect_flush_timeout = 0;
1365   tree_view->priv->init_hadjust_value = TRUE;
1366   tree_view->priv->width = 0;
1367
1368   tree_view->priv->hover_selection = FALSE;
1369   tree_view->priv->hover_expand = FALSE;
1370
1371   tree_view->priv->level_indentation = 0;
1372
1373   tree_view->priv->rubber_banding_enable = FALSE;
1374
1375   tree_view->priv->grid_lines = GTK_TREE_VIEW_GRID_LINES_NONE;
1376   tree_view->priv->tree_lines_enabled = FALSE;
1377
1378   tree_view->priv->tooltip_column = -1;
1379
1380   tree_view->priv->post_validation_flag = FALSE;
1381
1382   tree_view->priv->last_button_x = -1;
1383   tree_view->priv->last_button_y = -1;
1384
1385   tree_view->priv->event_last_x = -10000;
1386   tree_view->priv->event_last_y = -10000;
1387 }
1388
1389 \f
1390
1391 /* GObject Methods
1392  */
1393
1394 static void
1395 gtk_tree_view_set_property (GObject         *object,
1396                             guint            prop_id,
1397                             const GValue    *value,
1398                             GParamSpec      *pspec)
1399 {
1400   GtkTreeView *tree_view;
1401
1402   tree_view = GTK_TREE_VIEW (object);
1403
1404   switch (prop_id)
1405     {
1406     case PROP_MODEL:
1407       gtk_tree_view_set_model (tree_view, g_value_get_object (value));
1408       break;
1409     case PROP_HADJUSTMENT:
1410       gtk_tree_view_set_hadjustment (tree_view, g_value_get_object (value));
1411       break;
1412     case PROP_VADJUSTMENT:
1413       gtk_tree_view_set_vadjustment (tree_view, g_value_get_object (value));
1414       break;
1415     case PROP_HEADERS_VISIBLE:
1416       gtk_tree_view_set_headers_visible (tree_view, g_value_get_boolean (value));
1417       break;
1418     case PROP_HEADERS_CLICKABLE:
1419       gtk_tree_view_set_headers_clickable (tree_view, g_value_get_boolean (value));
1420       break;
1421     case PROP_EXPANDER_COLUMN:
1422       gtk_tree_view_set_expander_column (tree_view, g_value_get_object (value));
1423       break;
1424     case PROP_REORDERABLE:
1425       gtk_tree_view_set_reorderable (tree_view, g_value_get_boolean (value));
1426       break;
1427     case PROP_RULES_HINT:
1428       gtk_tree_view_set_rules_hint (tree_view, g_value_get_boolean (value));
1429       break;
1430     case PROP_ENABLE_SEARCH:
1431       gtk_tree_view_set_enable_search (tree_view, g_value_get_boolean (value));
1432       break;
1433     case PROP_SEARCH_COLUMN:
1434       gtk_tree_view_set_search_column (tree_view, g_value_get_int (value));
1435       break;
1436     case PROP_FIXED_HEIGHT_MODE:
1437       gtk_tree_view_set_fixed_height_mode (tree_view, g_value_get_boolean (value));
1438       break;
1439     case PROP_HOVER_SELECTION:
1440       tree_view->priv->hover_selection = g_value_get_boolean (value);
1441       break;
1442     case PROP_HOVER_EXPAND:
1443       tree_view->priv->hover_expand = g_value_get_boolean (value);
1444       break;
1445     case PROP_SHOW_EXPANDERS:
1446       gtk_tree_view_set_show_expanders (tree_view, g_value_get_boolean (value));
1447       break;
1448     case PROP_LEVEL_INDENTATION:
1449       tree_view->priv->level_indentation = g_value_get_int (value);
1450       break;
1451     case PROP_RUBBER_BANDING:
1452       tree_view->priv->rubber_banding_enable = g_value_get_boolean (value);
1453       break;
1454     case PROP_ENABLE_GRID_LINES:
1455       gtk_tree_view_set_grid_lines (tree_view, g_value_get_enum (value));
1456       break;
1457     case PROP_ENABLE_TREE_LINES:
1458       gtk_tree_view_set_enable_tree_lines (tree_view, g_value_get_boolean (value));
1459       break;
1460     case PROP_TOOLTIP_COLUMN:
1461       gtk_tree_view_set_tooltip_column (tree_view, g_value_get_int (value));
1462       break;
1463     default:
1464       G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
1465       break;
1466     }
1467 }
1468
1469 static void
1470 gtk_tree_view_get_property (GObject    *object,
1471                             guint       prop_id,
1472                             GValue     *value,
1473                             GParamSpec *pspec)
1474 {
1475   GtkTreeView *tree_view;
1476
1477   tree_view = GTK_TREE_VIEW (object);
1478
1479   switch (prop_id)
1480     {
1481     case PROP_MODEL:
1482       g_value_set_object (value, tree_view->priv->model);
1483       break;
1484     case PROP_HADJUSTMENT:
1485       g_value_set_object (value, tree_view->priv->hadjustment);
1486       break;
1487     case PROP_VADJUSTMENT:
1488       g_value_set_object (value, tree_view->priv->vadjustment);
1489       break;
1490     case PROP_HEADERS_VISIBLE:
1491       g_value_set_boolean (value, gtk_tree_view_get_headers_visible (tree_view));
1492       break;
1493     case PROP_HEADERS_CLICKABLE:
1494       g_value_set_boolean (value, gtk_tree_view_get_headers_clickable (tree_view));
1495       break;
1496     case PROP_EXPANDER_COLUMN:
1497       g_value_set_object (value, tree_view->priv->expander_column);
1498       break;
1499     case PROP_REORDERABLE:
1500       g_value_set_boolean (value, tree_view->priv->reorderable);
1501       break;
1502     case PROP_RULES_HINT:
1503       g_value_set_boolean (value, tree_view->priv->has_rules);
1504       break;
1505     case PROP_ENABLE_SEARCH:
1506       g_value_set_boolean (value, tree_view->priv->enable_search);
1507       break;
1508     case PROP_SEARCH_COLUMN:
1509       g_value_set_int (value, tree_view->priv->search_column);
1510       break;
1511     case PROP_FIXED_HEIGHT_MODE:
1512       g_value_set_boolean (value, tree_view->priv->fixed_height_mode);
1513       break;
1514     case PROP_HOVER_SELECTION:
1515       g_value_set_boolean (value, tree_view->priv->hover_selection);
1516       break;
1517     case PROP_HOVER_EXPAND:
1518       g_value_set_boolean (value, tree_view->priv->hover_expand);
1519       break;
1520     case PROP_SHOW_EXPANDERS:
1521       g_value_set_boolean (value, GTK_TREE_VIEW_FLAG_SET (tree_view, GTK_TREE_VIEW_SHOW_EXPANDERS));
1522       break;
1523     case PROP_LEVEL_INDENTATION:
1524       g_value_set_int (value, tree_view->priv->level_indentation);
1525       break;
1526     case PROP_RUBBER_BANDING:
1527       g_value_set_boolean (value, tree_view->priv->rubber_banding_enable);
1528       break;
1529     case PROP_ENABLE_GRID_LINES:
1530       g_value_set_enum (value, tree_view->priv->grid_lines);
1531       break;
1532     case PROP_ENABLE_TREE_LINES:
1533       g_value_set_boolean (value, tree_view->priv->tree_lines_enabled);
1534       break;
1535     case PROP_TOOLTIP_COLUMN:
1536       g_value_set_int (value, tree_view->priv->tooltip_column);
1537       break;
1538     default:
1539       G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
1540       break;
1541     }
1542 }
1543
1544 static void
1545 gtk_tree_view_finalize (GObject *object)
1546 {
1547   G_OBJECT_CLASS (gtk_tree_view_parent_class)->finalize (object);
1548 }
1549
1550 \f
1551
1552 static void
1553 gtk_tree_view_buildable_add_child (GtkBuildable *tree_view,
1554                                    GtkBuilder  *builder,
1555                                    GObject     *child,
1556                                    const gchar *type)
1557 {
1558   gtk_tree_view_append_column (GTK_TREE_VIEW (tree_view), GTK_TREE_VIEW_COLUMN (child));
1559 }
1560
1561 /* GtkObject Methods
1562  */
1563
1564 static void
1565 gtk_tree_view_free_rbtree (GtkTreeView *tree_view)
1566 {
1567   _gtk_rbtree_free (tree_view->priv->tree);
1568
1569   tree_view->priv->tree = NULL;
1570   tree_view->priv->button_pressed_node = NULL;
1571   tree_view->priv->button_pressed_tree = NULL;
1572   tree_view->priv->prelight_tree = NULL;
1573   tree_view->priv->prelight_node = NULL;
1574   tree_view->priv->expanded_collapsed_node = NULL;
1575   tree_view->priv->expanded_collapsed_tree = NULL;
1576 }
1577
1578 static void
1579 gtk_tree_view_destroy (GtkObject *object)
1580 {
1581   GtkTreeView *tree_view = GTK_TREE_VIEW (object);
1582   GList *list;
1583
1584   gtk_tree_view_stop_editing (tree_view, TRUE);
1585
1586   if (tree_view->priv->columns != NULL)
1587     {
1588       list = tree_view->priv->columns;
1589       while (list)
1590         {
1591           GtkTreeViewColumn *column;
1592           column = GTK_TREE_VIEW_COLUMN (list->data);
1593           list = list->next;
1594           gtk_tree_view_remove_column (tree_view, column);
1595         }
1596       tree_view->priv->columns = NULL;
1597     }
1598
1599   if (tree_view->priv->tree != NULL)
1600     {
1601       gtk_tree_view_unref_and_check_selection_tree (tree_view, tree_view->priv->tree);
1602
1603       gtk_tree_view_free_rbtree (tree_view);
1604     }
1605
1606   if (tree_view->priv->selection != NULL)
1607     {
1608       _gtk_tree_selection_set_tree_view (tree_view->priv->selection, NULL);
1609       g_object_unref (tree_view->priv->selection);
1610       tree_view->priv->selection = NULL;
1611     }
1612
1613   if (tree_view->priv->scroll_to_path != NULL)
1614     {
1615       gtk_tree_row_reference_free (tree_view->priv->scroll_to_path);
1616       tree_view->priv->scroll_to_path = NULL;
1617     }
1618
1619   if (tree_view->priv->drag_dest_row != NULL)
1620     {
1621       gtk_tree_row_reference_free (tree_view->priv->drag_dest_row);
1622       tree_view->priv->drag_dest_row = NULL;
1623     }
1624
1625   if (tree_view->priv->top_row != NULL)
1626     {
1627       gtk_tree_row_reference_free (tree_view->priv->top_row);
1628       tree_view->priv->top_row = NULL;
1629     }
1630
1631   if (tree_view->priv->column_drop_func_data &&
1632       tree_view->priv->column_drop_func_data_destroy)
1633     {
1634       tree_view->priv->column_drop_func_data_destroy (tree_view->priv->column_drop_func_data);
1635       tree_view->priv->column_drop_func_data = NULL;
1636     }
1637
1638   if (tree_view->priv->destroy_count_destroy &&
1639       tree_view->priv->destroy_count_data)
1640     {
1641       tree_view->priv->destroy_count_destroy (tree_view->priv->destroy_count_data);
1642       tree_view->priv->destroy_count_data = NULL;
1643     }
1644
1645   gtk_tree_row_reference_free (tree_view->priv->cursor);
1646   tree_view->priv->cursor = NULL;
1647
1648   gtk_tree_row_reference_free (tree_view->priv->anchor);
1649   tree_view->priv->anchor = NULL;
1650
1651   /* destroy interactive search dialog */
1652   if (tree_view->priv->search_window)
1653     {
1654       gtk_widget_destroy (tree_view->priv->search_window);
1655       tree_view->priv->search_window = NULL;
1656       tree_view->priv->search_entry = NULL;
1657       if (tree_view->priv->typeselect_flush_timeout)
1658         {
1659           g_source_remove (tree_view->priv->typeselect_flush_timeout);
1660           tree_view->priv->typeselect_flush_timeout = 0;
1661         }
1662     }
1663
1664   if (tree_view->priv->search_destroy && tree_view->priv->search_user_data)
1665     {
1666       tree_view->priv->search_destroy (tree_view->priv->search_user_data);
1667       tree_view->priv->search_user_data = NULL;
1668     }
1669
1670   if (tree_view->priv->search_position_destroy && tree_view->priv->search_position_user_data)
1671     {
1672       tree_view->priv->search_position_destroy (tree_view->priv->search_position_user_data);
1673       tree_view->priv->search_position_user_data = NULL;
1674     }
1675
1676   if (tree_view->priv->row_separator_destroy && tree_view->priv->row_separator_data)
1677     {
1678       tree_view->priv->row_separator_destroy (tree_view->priv->row_separator_data);
1679       tree_view->priv->row_separator_data = NULL;
1680     }
1681
1682   gtk_tree_view_set_model (tree_view, NULL);
1683
1684   if (tree_view->priv->hadjustment)
1685     {
1686       g_object_unref (tree_view->priv->hadjustment);
1687       tree_view->priv->hadjustment = NULL;
1688     }
1689   if (tree_view->priv->vadjustment)
1690     {
1691       g_object_unref (tree_view->priv->vadjustment);
1692       tree_view->priv->vadjustment = NULL;
1693     }
1694
1695   GTK_OBJECT_CLASS (gtk_tree_view_parent_class)->destroy (object);
1696 }
1697
1698 \f
1699
1700 /* GtkWidget Methods
1701  */
1702
1703 /* GtkWidget::map helper */
1704 static void
1705 gtk_tree_view_map_buttons (GtkTreeView *tree_view)
1706 {
1707   GList *list;
1708
1709   g_return_if_fail (gtk_widget_get_mapped (GTK_WIDGET (tree_view)));
1710
1711   if (GTK_TREE_VIEW_FLAG_SET (tree_view, GTK_TREE_VIEW_HEADERS_VISIBLE))
1712     {
1713       GtkTreeViewColumn *column;
1714
1715       for (list = tree_view->priv->columns; list; list = list->next)
1716         {
1717           column = list->data;
1718           if (gtk_widget_get_visible (column->button) &&
1719               !gtk_widget_get_mapped (column->button))
1720             gtk_widget_map (column->button);
1721         }
1722       for (list = tree_view->priv->columns; list; list = list->next)
1723         {
1724           column = list->data;
1725           if (column->visible == FALSE)
1726             continue;
1727           if (column->resizable)
1728             {
1729               gdk_window_raise (column->window);
1730               gdk_window_show (column->window);
1731             }
1732           else
1733             gdk_window_hide (column->window);
1734         }
1735       gdk_window_show (tree_view->priv->header_window);
1736     }
1737 }
1738
1739 static void
1740 gtk_tree_view_map (GtkWidget *widget)
1741 {
1742   GtkTreeView *tree_view = GTK_TREE_VIEW (widget);
1743   GList *tmp_list;
1744
1745   GTK_WIDGET_SET_FLAGS (widget, GTK_MAPPED);
1746
1747   tmp_list = tree_view->priv->children;
1748   while (tmp_list)
1749     {
1750       GtkTreeViewChild *child = tmp_list->data;
1751       tmp_list = tmp_list->next;
1752
1753       if (gtk_widget_get_visible (child->widget))
1754         {
1755           if (!gtk_widget_get_mapped (child->widget))
1756             gtk_widget_map (child->widget);
1757         }
1758     }
1759   gdk_window_show (tree_view->priv->bin_window);
1760
1761   gtk_tree_view_map_buttons (tree_view);
1762
1763   gdk_window_show (widget->window);
1764 }
1765
1766 static void
1767 gtk_tree_view_realize (GtkWidget *widget)
1768 {
1769   GtkTreeView *tree_view = GTK_TREE_VIEW (widget);
1770   GList *tmp_list;
1771   GdkWindowAttr attributes;
1772   gint attributes_mask;
1773
1774   GTK_WIDGET_SET_FLAGS (widget, GTK_REALIZED);
1775
1776   /* Make the main, clipping window */
1777   attributes.window_type = GDK_WINDOW_CHILD;
1778   attributes.x = widget->allocation.x;
1779   attributes.y = widget->allocation.y;
1780   attributes.width = widget->allocation.width;
1781   attributes.height = widget->allocation.height;
1782   attributes.wclass = GDK_INPUT_OUTPUT;
1783   attributes.visual = gtk_widget_get_visual (widget);
1784   attributes.colormap = gtk_widget_get_colormap (widget);
1785   attributes.event_mask = GDK_VISIBILITY_NOTIFY_MASK;
1786
1787   attributes_mask = GDK_WA_X | GDK_WA_Y | GDK_WA_VISUAL | GDK_WA_COLORMAP;
1788
1789   widget->window = gdk_window_new (gtk_widget_get_parent_window (widget),
1790                                    &attributes, attributes_mask);
1791   gdk_window_set_user_data (widget->window, widget);
1792
1793   /* Make the window for the tree */
1794   attributes.x = 0;
1795   attributes.y = TREE_VIEW_HEADER_HEIGHT (tree_view);
1796   attributes.width = MAX (tree_view->priv->width, widget->allocation.width);
1797   attributes.height = widget->allocation.height;
1798   attributes.event_mask = (GDK_EXPOSURE_MASK |
1799                            GDK_SCROLL_MASK |
1800                            GDK_POINTER_MOTION_MASK |
1801                            GDK_ENTER_NOTIFY_MASK |
1802                            GDK_LEAVE_NOTIFY_MASK |
1803                            GDK_BUTTON_PRESS_MASK |
1804                            GDK_BUTTON_RELEASE_MASK |
1805                            gtk_widget_get_events (widget));
1806
1807   tree_view->priv->bin_window = gdk_window_new (widget->window,
1808                                                 &attributes, attributes_mask);
1809   gdk_window_set_user_data (tree_view->priv->bin_window, widget);
1810
1811   /* Make the column header window */
1812   attributes.x = 0;
1813   attributes.y = 0;
1814   attributes.width = MAX (tree_view->priv->width, widget->allocation.width);
1815   attributes.height = tree_view->priv->header_height;
1816   attributes.event_mask = (GDK_EXPOSURE_MASK |
1817                            GDK_SCROLL_MASK |
1818                            GDK_BUTTON_PRESS_MASK |
1819                            GDK_BUTTON_RELEASE_MASK |
1820                            GDK_KEY_PRESS_MASK |
1821                            GDK_KEY_RELEASE_MASK |
1822                            gtk_widget_get_events (widget));
1823
1824   tree_view->priv->header_window = gdk_window_new (widget->window,
1825                                                    &attributes, attributes_mask);
1826   gdk_window_set_user_data (tree_view->priv->header_window, widget);
1827
1828   /* Add them all up. */
1829   widget->style = gtk_style_attach (widget->style, widget->window);
1830   gdk_window_set_back_pixmap (widget->window, NULL, FALSE);
1831   gdk_window_set_background (tree_view->priv->bin_window, &widget->style->base[widget->state]);
1832   gtk_style_set_background (widget->style, tree_view->priv->header_window, GTK_STATE_NORMAL);
1833
1834   tmp_list = tree_view->priv->children;
1835   while (tmp_list)
1836     {
1837       GtkTreeViewChild *child = tmp_list->data;
1838       tmp_list = tmp_list->next;
1839
1840       gtk_widget_set_parent_window (child->widget, tree_view->priv->bin_window);
1841     }
1842
1843   for (tmp_list = tree_view->priv->columns; tmp_list; tmp_list = tmp_list->next)
1844     _gtk_tree_view_column_realize_button (GTK_TREE_VIEW_COLUMN (tmp_list->data));
1845
1846   /* Need to call those here, since they create GCs */
1847   gtk_tree_view_set_grid_lines (tree_view, tree_view->priv->grid_lines);
1848   gtk_tree_view_set_enable_tree_lines (tree_view, tree_view->priv->tree_lines_enabled);
1849
1850   install_presize_handler (tree_view);
1851 }
1852
1853 static void
1854 gtk_tree_view_unrealize (GtkWidget *widget)
1855 {
1856   GtkTreeView *tree_view = GTK_TREE_VIEW (widget);
1857   GtkTreeViewPrivate *priv = tree_view->priv;
1858   GList *list;
1859
1860   if (priv->scroll_timeout != 0)
1861     {
1862       g_source_remove (priv->scroll_timeout);
1863       priv->scroll_timeout = 0;
1864     }
1865
1866   if (priv->auto_expand_timeout != 0)
1867     {
1868       g_source_remove (priv->auto_expand_timeout);
1869       priv->auto_expand_timeout = 0;
1870     }
1871
1872   if (priv->open_dest_timeout != 0)
1873     {
1874       g_source_remove (priv->open_dest_timeout);
1875       priv->open_dest_timeout = 0;
1876     }
1877
1878   remove_expand_collapse_timeout (tree_view);
1879
1880   if (priv->presize_handler_timer != 0)
1881     {
1882       g_source_remove (priv->presize_handler_timer);
1883       priv->presize_handler_timer = 0;
1884     }
1885
1886   if (priv->validate_rows_timer != 0)
1887     {
1888       g_source_remove (priv->validate_rows_timer);
1889       priv->validate_rows_timer = 0;
1890     }
1891
1892   if (priv->scroll_sync_timer != 0)
1893     {
1894       g_source_remove (priv->scroll_sync_timer);
1895       priv->scroll_sync_timer = 0;
1896     }
1897
1898   if (priv->typeselect_flush_timeout)
1899     {
1900       g_source_remove (priv->typeselect_flush_timeout);
1901       priv->typeselect_flush_timeout = 0;
1902     }
1903
1904   for (list = priv->columns; list; list = list->next)
1905     _gtk_tree_view_column_unrealize_button (GTK_TREE_VIEW_COLUMN (list->data));
1906
1907   gdk_window_set_user_data (priv->bin_window, NULL);
1908   gdk_window_destroy (priv->bin_window);
1909   priv->bin_window = NULL;
1910
1911   gdk_window_set_user_data (priv->header_window, NULL);
1912   gdk_window_destroy (priv->header_window);
1913   priv->header_window = NULL;
1914
1915   if (priv->drag_window)
1916     {
1917       gdk_window_set_user_data (priv->drag_window, NULL);
1918       gdk_window_destroy (priv->drag_window);
1919       priv->drag_window = NULL;
1920     }
1921
1922   if (priv->drag_highlight_window)
1923     {
1924       gdk_window_set_user_data (priv->drag_highlight_window, NULL);
1925       gdk_window_destroy (priv->drag_highlight_window);
1926       priv->drag_highlight_window = NULL;
1927     }
1928
1929   if (priv->tree_line_gc)
1930     {
1931       g_object_unref (priv->tree_line_gc);
1932       priv->tree_line_gc = NULL;
1933     }
1934
1935   if (priv->grid_line_gc)
1936     {
1937       g_object_unref (priv->grid_line_gc);
1938       priv->grid_line_gc = NULL;
1939     }
1940
1941   GTK_WIDGET_CLASS (gtk_tree_view_parent_class)->unrealize (widget);
1942 }
1943
1944 /* GtkWidget::size_request helper */
1945 static void
1946 gtk_tree_view_size_request_columns (GtkTreeView *tree_view)
1947 {
1948   GList *list;
1949
1950   tree_view->priv->header_height = 0;
1951
1952   if (tree_view->priv->model)
1953     {
1954       for (list = tree_view->priv->columns; list; list = list->next)
1955         {
1956           GtkRequisition requisition;
1957           GtkTreeViewColumn *column = list->data;
1958
1959           if (column->button == NULL)
1960             continue;
1961
1962           column = list->data;
1963
1964           gtk_widget_size_request (column->button, &requisition);
1965           column->button_request = requisition.width;
1966           tree_view->priv->header_height = MAX (tree_view->priv->header_height, requisition.height);
1967         }
1968     }
1969 }
1970
1971
1972 /* Called only by ::size_request */
1973 static void
1974 gtk_tree_view_update_size (GtkTreeView *tree_view)
1975 {
1976   GList *list;
1977   GtkTreeViewColumn *column;
1978   gint i;
1979
1980   if (tree_view->priv->model == NULL)
1981     {
1982       tree_view->priv->width = 0;
1983       tree_view->priv->prev_width = 0;
1984       tree_view->priv->height = 0;
1985       return;
1986     }
1987
1988   tree_view->priv->prev_width = tree_view->priv->width;
1989   tree_view->priv->width = 0;
1990
1991   /* keep this in sync with size_allocate below */
1992   for (list = tree_view->priv->columns, i = 0; list; list = list->next, i++)
1993     {
1994       gint real_requested_width = 0;
1995       column = list->data;
1996       if (!column->visible)
1997         continue;
1998
1999       if (column->use_resized_width)
2000         {
2001           real_requested_width = column->resized_width;
2002         }
2003       else if (column->column_type == GTK_TREE_VIEW_COLUMN_FIXED)
2004         {
2005           real_requested_width = column->fixed_width;
2006         }
2007       else if (GTK_TREE_VIEW_FLAG_SET (tree_view, GTK_TREE_VIEW_HEADERS_VISIBLE))
2008         {
2009           real_requested_width = MAX (column->requested_width, column->button_request);
2010         }
2011       else
2012         {
2013           real_requested_width = column->requested_width;
2014         }
2015
2016       if (column->min_width != -1)
2017         real_requested_width = MAX (real_requested_width, column->min_width);
2018       if (column->max_width != -1)
2019         real_requested_width = MIN (real_requested_width, column->max_width);
2020
2021       tree_view->priv->width += real_requested_width;
2022     }
2023
2024   if (tree_view->priv->tree == NULL)
2025     tree_view->priv->height = 0;
2026   else
2027     tree_view->priv->height = tree_view->priv->tree->root->offset;
2028 }
2029
2030 static void
2031 gtk_tree_view_size_request (GtkWidget      *widget,
2032                             GtkRequisition *requisition)
2033 {
2034   GtkTreeView *tree_view = GTK_TREE_VIEW (widget);
2035   GList *tmp_list;
2036
2037   /* we validate some rows initially just to make sure we have some size.
2038    * In practice, with a lot of static lists, this should get a good width.
2039    */
2040   do_validate_rows (tree_view, FALSE);
2041   gtk_tree_view_size_request_columns (tree_view);
2042   gtk_tree_view_update_size (GTK_TREE_VIEW (widget));
2043
2044   requisition->width = tree_view->priv->width;
2045   requisition->height = tree_view->priv->height + TREE_VIEW_HEADER_HEIGHT (tree_view);
2046
2047   tmp_list = tree_view->priv->children;
2048
2049   while (tmp_list)
2050     {
2051       GtkTreeViewChild *child = tmp_list->data;
2052       GtkRequisition child_requisition;
2053
2054       tmp_list = tmp_list->next;
2055
2056       if (gtk_widget_get_visible (child->widget))
2057         gtk_widget_size_request (child->widget, &child_requisition);
2058     }
2059 }
2060
2061 static int
2062 gtk_tree_view_calculate_width_before_expander (GtkTreeView *tree_view)
2063 {
2064   int width = 0;
2065   GList *list;
2066   gboolean rtl;
2067
2068   rtl = (gtk_widget_get_direction (GTK_WIDGET (tree_view)) == GTK_TEXT_DIR_RTL);
2069   for (list = (rtl ? g_list_last (tree_view->priv->columns) : g_list_first (tree_view->priv->columns));
2070        list->data != tree_view->priv->expander_column;
2071        list = (rtl ? list->prev : list->next))
2072     {
2073       GtkTreeViewColumn *column = list->data;
2074
2075       width += column->width;
2076     }
2077
2078   return width;
2079 }
2080
2081 static void
2082 invalidate_column (GtkTreeView       *tree_view,
2083                    GtkTreeViewColumn *column)
2084 {
2085   gint column_offset = 0;
2086   GList *list;
2087   GtkWidget *widget = GTK_WIDGET (tree_view);
2088   gboolean rtl;
2089
2090   if (!GTK_WIDGET_REALIZED (widget))
2091     return;
2092
2093   rtl = (gtk_widget_get_direction (GTK_WIDGET (tree_view)) == GTK_TEXT_DIR_RTL);
2094   for (list = (rtl ? g_list_last (tree_view->priv->columns) : g_list_first (tree_view->priv->columns));
2095        list;
2096        list = (rtl ? list->prev : list->next))
2097     {
2098       GtkTreeViewColumn *tmpcolumn = list->data;
2099       if (tmpcolumn == column)
2100         {
2101           GdkRectangle invalid_rect;
2102
2103           invalid_rect.x = column_offset;
2104           invalid_rect.y = 0;
2105           invalid_rect.width = column->width;
2106           invalid_rect.height = widget->allocation.height;
2107
2108           gdk_window_invalidate_rect (widget->window, &invalid_rect, TRUE);
2109           break;
2110         }
2111
2112       column_offset += tmpcolumn->width;
2113     }
2114 }
2115
2116 static void
2117 invalidate_last_column (GtkTreeView *tree_view)
2118 {
2119   GList *last_column;
2120   gboolean rtl;
2121
2122   rtl = (gtk_widget_get_direction (GTK_WIDGET (tree_view)) == GTK_TEXT_DIR_RTL);
2123
2124   for (last_column = (rtl ? g_list_first (tree_view->priv->columns) : g_list_last (tree_view->priv->columns));
2125        last_column;
2126        last_column = (rtl ? last_column->next : last_column->prev))
2127     {
2128       if (GTK_TREE_VIEW_COLUMN (last_column->data)->visible)
2129         {
2130           invalidate_column (tree_view, last_column->data);
2131           return;
2132         }
2133     }
2134 }
2135
2136 static gint
2137 gtk_tree_view_get_real_requested_width_from_column (GtkTreeView       *tree_view,
2138                                                     GtkTreeViewColumn *column)
2139 {
2140   gint real_requested_width;
2141
2142   if (column->use_resized_width)
2143     {
2144       real_requested_width = column->resized_width;
2145     }
2146   else if (column->column_type == GTK_TREE_VIEW_COLUMN_FIXED)
2147     {
2148       real_requested_width = column->fixed_width;
2149     }
2150   else if (GTK_TREE_VIEW_FLAG_SET (tree_view, GTK_TREE_VIEW_HEADERS_VISIBLE))
2151     {
2152       real_requested_width = MAX (column->requested_width, column->button_request);
2153     }
2154   else
2155     {
2156       real_requested_width = column->requested_width;
2157       if (real_requested_width < 0)
2158         real_requested_width = 0;
2159     }
2160
2161   if (column->min_width != -1)
2162     real_requested_width = MAX (real_requested_width, column->min_width);
2163   if (column->max_width != -1)
2164     real_requested_width = MIN (real_requested_width, column->max_width);
2165
2166   return real_requested_width;
2167 }
2168
2169 static gint
2170 gtk_tree_view_get_real_natural_width_from_column (GtkTreeView       *tree_view,
2171                                                   GtkTreeViewColumn *column)
2172 {
2173   GtkTreeViewColumnPrivate *column_priv;
2174   GtkRequisition button_natural_size;
2175   gint column_natural_width;
2176
2177   column_priv = GTK_TREE_VIEW_COLUMN_GET_PRIVATE (column);
2178   column_natural_width = column_priv->natural_width;
2179
2180   if (GTK_TREE_VIEW_FLAG_SET (tree_view, GTK_TREE_VIEW_HEADERS_VISIBLE))
2181     {
2182       gtk_extended_layout_get_desired_size (GTK_EXTENDED_LAYOUT (column->button),
2183                                             NULL, &button_natural_size);
2184
2185       column_natural_width = MAX (column_natural_width, button_natural_size.width);
2186     }
2187
2188   return column_natural_width;
2189 }
2190
2191 /* GtkWidget::size_allocate helper */
2192 static void
2193 gtk_tree_view_size_allocate_columns (GtkWidget *widget,
2194                                      gboolean  *width_changed)
2195 {
2196   GtkTreeView *tree_view;
2197   GList *list, *first_column, *last_column;
2198   GtkTreeViewColumn *column;
2199   GtkAllocation allocation;
2200   gint width = 0, natural_width;
2201   gint extra, extra_per_column, extra_for_last;
2202   gint full_requested_width = 0;
2203   gint full_natural_width = 0;
2204   gint number_of_expand_columns = 0;
2205   gboolean column_changed = FALSE;
2206   gboolean rtl;
2207   gboolean update_expand;
2208
2209   tree_view = GTK_TREE_VIEW (widget);
2210
2211   for (last_column = g_list_last (tree_view->priv->columns);
2212        last_column && !(GTK_TREE_VIEW_COLUMN (last_column->data)->visible);
2213        last_column = last_column->prev)
2214     ;
2215   if (last_column == NULL)
2216     return;
2217
2218   for (first_column = g_list_first (tree_view->priv->columns);
2219        first_column && !(GTK_TREE_VIEW_COLUMN (first_column->data)->visible);
2220        first_column = first_column->next)
2221     ;
2222
2223   allocation.y = 0;
2224   allocation.height = tree_view->priv->header_height;
2225
2226   rtl = (gtk_widget_get_direction (widget) == GTK_TEXT_DIR_RTL);
2227
2228   /* find out how many extra space and expandable columns we have */
2229   for (list = tree_view->priv->columns; list != last_column->next; list = list->next)
2230     {
2231       column = (GtkTreeViewColumn *)list->data;
2232
2233       if (!column->visible)
2234         continue;
2235
2236       full_requested_width += gtk_tree_view_get_real_requested_width_from_column (tree_view, column);
2237       full_natural_width += gtk_tree_view_get_real_natural_width_from_column (tree_view, column);
2238
2239       if (column->expand)
2240         number_of_expand_columns++;
2241     }
2242
2243   /* Only update the expand value if the width of the widget has changed,
2244    * or the number of expand columns has changed, or if there are no expand
2245    * columns, or if we didn't have an size-allocation yet after the
2246    * last validated node.
2247    */
2248   update_expand = (width_changed && *width_changed == TRUE)
2249       || number_of_expand_columns != tree_view->priv->last_number_of_expand_columns
2250       || number_of_expand_columns == 0
2251       || tree_view->priv->post_validation_flag == TRUE;
2252
2253   tree_view->priv->post_validation_flag = FALSE;
2254
2255   if (!update_expand)
2256     {
2257       extra = tree_view->priv->last_extra_space;
2258       extra_for_last = MAX (widget->allocation.width - full_requested_width - extra, 0);
2259     }
2260   else
2261     {
2262       full_natural_width -= full_requested_width;
2263       extra = MAX (widget->allocation.width - full_requested_width, 0);
2264       natural_width = MIN (extra, full_natural_width);
2265       extra_for_last = 0;
2266
2267       tree_view->priv->last_extra_space = extra;
2268     }
2269
2270   if (number_of_expand_columns > 0)
2271     extra_per_column = extra/number_of_expand_columns;
2272   else
2273     extra_per_column = 0;
2274
2275   if (update_expand)
2276     {
2277       tree_view->priv->last_extra_space_per_column = extra_per_column;
2278       tree_view->priv->last_number_of_expand_columns = number_of_expand_columns;
2279     }
2280
2281   for (list = (rtl ? last_column : first_column);
2282        list != (rtl ? first_column->prev : last_column->next);
2283        list = (rtl ? list->prev : list->next))
2284     {
2285       gint real_requested_width = 0;
2286       gint real_natural_width = 0;
2287       gint old_width;
2288
2289       column = list->data;
2290       old_width = column->width;
2291
2292       if (!column->visible)
2293         continue;
2294
2295       /* We need to handle the dragged button specially.
2296        */
2297       if (column == tree_view->priv->drag_column)
2298         {
2299           GtkAllocation drag_allocation;
2300           gdk_drawable_get_size (tree_view->priv->drag_window,
2301                                  &(drag_allocation.width),
2302                                  &(drag_allocation.height));
2303           drag_allocation.x = 0;
2304           drag_allocation.y = 0;
2305           gtk_widget_size_allocate (tree_view->priv->drag_column->button,
2306                                     &drag_allocation);
2307           width += drag_allocation.width;
2308           continue;
2309         }
2310
2311       real_requested_width = gtk_tree_view_get_real_requested_width_from_column (tree_view, column);
2312       real_natural_width = gtk_tree_view_get_real_natural_width_from_column (tree_view, column);
2313       real_natural_width -= real_requested_width;
2314
2315       allocation.x = width;
2316       column->width = real_requested_width;
2317
2318       if (full_natural_width > 0)
2319         column->width += natural_width * real_natural_width / full_natural_width;
2320       if (column->expand)
2321         {
2322           if (number_of_expand_columns == 1)
2323             {
2324               /* We add the remander to the last column as
2325                * */
2326               column->width += extra;
2327             }
2328           else
2329             {
2330               column->width += extra_per_column;
2331               extra -= extra_per_column;
2332               number_of_expand_columns --;
2333             }
2334         }
2335       else if (number_of_expand_columns == 0 &&
2336                list == last_column)
2337         {
2338           column->width += extra;
2339         }
2340
2341       /* In addition to expand, the last column can get even more
2342        * extra space so all available space is filled up.
2343        */
2344       if (extra_for_last > 0 && list == last_column)
2345         column->width += extra_for_last;
2346
2347       g_object_notify (G_OBJECT (column), "width");
2348
2349       allocation.width = column->width;
2350       width += column->width;
2351
2352       if (column->width > old_width)
2353         column_changed = TRUE;
2354
2355       gtk_widget_size_allocate (column->button, &allocation);
2356
2357       if (column->window)
2358         gdk_window_move_resize (column->window,
2359                                 allocation.x + (rtl ? 0 : allocation.width) - TREE_VIEW_DRAG_WIDTH/2,
2360                                 allocation.y,
2361                                 TREE_VIEW_DRAG_WIDTH, allocation.height);
2362     }
2363
2364   /* We change the width here.  The user might have been resizing columns,
2365    * so the total width of the tree view changes.
2366    */
2367   tree_view->priv->width = width;
2368   if (width_changed)
2369     *width_changed = TRUE;
2370
2371   if (column_changed)
2372     gtk_widget_queue_draw (GTK_WIDGET (tree_view));
2373 }
2374
2375
2376 static void
2377 gtk_tree_view_size_allocate (GtkWidget     *widget,
2378                              GtkAllocation *allocation)
2379 {
2380   GtkTreeView *tree_view = GTK_TREE_VIEW (widget);
2381   GList *tmp_list;
2382   gboolean width_changed = FALSE;
2383   gint old_width = widget->allocation.width;
2384
2385   if (allocation->width != widget->allocation.width)
2386     width_changed = TRUE;
2387
2388   widget->allocation = *allocation;
2389
2390   tmp_list = tree_view->priv->children;
2391
2392   while (tmp_list)
2393     {
2394       GtkAllocation allocation;
2395
2396       GtkTreeViewChild *child = tmp_list->data;
2397       tmp_list = tmp_list->next;
2398
2399       /* totally ignore our child's requisition */
2400       allocation.x = child->x;
2401       allocation.y = child->y;
2402       allocation.width = child->width;
2403       allocation.height = child->height;
2404       gtk_widget_size_allocate (child->widget, &allocation);
2405     }
2406
2407   /* We size-allocate the columns first because the width of the
2408    * tree view (used in updating the adjustments below) might change.
2409    */
2410   gtk_tree_view_size_allocate_columns (widget, &width_changed);
2411
2412   tree_view->priv->hadjustment->page_size = allocation->width;
2413   tree_view->priv->hadjustment->page_increment = allocation->width * 0.9;
2414   tree_view->priv->hadjustment->step_increment = allocation->width * 0.1;
2415   tree_view->priv->hadjustment->lower = 0;
2416   tree_view->priv->hadjustment->upper = MAX (tree_view->priv->hadjustment->page_size, tree_view->priv->width);
2417
2418   if (gtk_widget_get_direction(widget) == GTK_TEXT_DIR_RTL)
2419     {
2420       if (allocation->width < tree_view->priv->width)
2421         {
2422           if (tree_view->priv->init_hadjust_value)
2423             {
2424               tree_view->priv->hadjustment->value = MAX (tree_view->priv->width - allocation->width, 0);
2425               tree_view->priv->init_hadjust_value = FALSE;
2426             }
2427           else if (allocation->width != old_width)
2428             {
2429               tree_view->priv->hadjustment->value = CLAMP (tree_view->priv->hadjustment->value - allocation->width + old_width, 0, tree_view->priv->width - allocation->width);
2430             }
2431           else
2432             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);
2433         }
2434       else
2435         {
2436           tree_view->priv->hadjustment->value = 0;
2437           tree_view->priv->init_hadjust_value = TRUE;
2438         }
2439     }
2440   else
2441     if (tree_view->priv->hadjustment->value + allocation->width > tree_view->priv->width)
2442       tree_view->priv->hadjustment->value = MAX (tree_view->priv->width - allocation->width, 0);
2443
2444   gtk_adjustment_changed (tree_view->priv->hadjustment);
2445
2446   tree_view->priv->vadjustment->page_size = allocation->height - TREE_VIEW_HEADER_HEIGHT (tree_view);
2447   tree_view->priv->vadjustment->step_increment = tree_view->priv->vadjustment->page_size * 0.1;
2448   tree_view->priv->vadjustment->page_increment = tree_view->priv->vadjustment->page_size * 0.9;
2449   tree_view->priv->vadjustment->lower = 0;
2450   tree_view->priv->vadjustment->upper = MAX (tree_view->priv->vadjustment->page_size, tree_view->priv->height);
2451
2452   gtk_adjustment_changed (tree_view->priv->vadjustment);
2453
2454   /* now the adjustments and window sizes are in sync, we can sync toprow/dy again */
2455   if (tree_view->priv->height <= tree_view->priv->vadjustment->page_size)
2456     gtk_adjustment_set_value (GTK_ADJUSTMENT (tree_view->priv->vadjustment), 0);
2457   else if (tree_view->priv->vadjustment->value + tree_view->priv->vadjustment->page_size > tree_view->priv->height)
2458     gtk_adjustment_set_value (GTK_ADJUSTMENT (tree_view->priv->vadjustment),
2459                               tree_view->priv->height - tree_view->priv->vadjustment->page_size);
2460   else if (gtk_tree_row_reference_valid (tree_view->priv->top_row))
2461     gtk_tree_view_top_row_to_dy (tree_view);
2462   else
2463     gtk_tree_view_dy_to_top_row (tree_view);
2464
2465   if (GTK_WIDGET_REALIZED (widget))
2466     {
2467       gdk_window_move_resize (widget->window,
2468                               allocation->x, allocation->y,
2469                               allocation->width, allocation->height);
2470       gdk_window_move_resize (tree_view->priv->header_window,
2471                               - (gint) tree_view->priv->hadjustment->value,
2472                               0,
2473                               MAX (tree_view->priv->width, allocation->width),
2474                               tree_view->priv->header_height);
2475       gdk_window_move_resize (tree_view->priv->bin_window,
2476                               - (gint) tree_view->priv->hadjustment->value,
2477                               TREE_VIEW_HEADER_HEIGHT (tree_view),
2478                               MAX (tree_view->priv->width, allocation->width),
2479                               allocation->height - TREE_VIEW_HEADER_HEIGHT (tree_view));
2480     }
2481
2482   if (tree_view->priv->tree == NULL)
2483     invalidate_empty_focus (tree_view);
2484
2485   if (GTK_WIDGET_REALIZED (widget))
2486     {
2487       gboolean has_expand_column = FALSE;
2488       for (tmp_list = tree_view->priv->columns; tmp_list; tmp_list = tmp_list->next)
2489         {
2490           if (gtk_tree_view_column_get_expand (GTK_TREE_VIEW_COLUMN (tmp_list->data)))
2491             {
2492               has_expand_column = TRUE;
2493               break;
2494             }
2495         }
2496
2497       if (width_changed && tree_view->priv->expander_column)
2498         {
2499           /* Might seem awkward, but is the best heuristic I could come up
2500            * with.  Only if the width of the columns before the expander
2501            * changes, we will update the prelight status.  It is this
2502            * width that makes the expander move vertically.  Always updating
2503            * prelight status causes trouble with hover selections.
2504            */
2505           gint width_before_expander;
2506
2507           width_before_expander = gtk_tree_view_calculate_width_before_expander (tree_view);
2508
2509           if (tree_view->priv->prev_width_before_expander
2510               != width_before_expander)
2511               update_prelight (tree_view,
2512                                tree_view->priv->event_last_x,
2513                                tree_view->priv->event_last_y);
2514
2515           tree_view->priv->prev_width_before_expander = width_before_expander;
2516         }
2517
2518       /* This little hack only works if we have an LTR locale, and no column has the  */
2519       if (width_changed)
2520         {
2521           if (gtk_widget_get_direction (GTK_WIDGET (tree_view)) == GTK_TEXT_DIR_LTR &&
2522               ! has_expand_column)
2523             invalidate_last_column (tree_view);
2524           else
2525             gtk_widget_queue_draw (widget);
2526         }
2527     }
2528 }
2529
2530 /* Grabs the focus and unsets the GTK_TREE_VIEW_DRAW_KEYFOCUS flag */
2531 static void
2532 grab_focus_and_unset_draw_keyfocus (GtkTreeView *tree_view)
2533 {
2534   GtkWidget *widget = GTK_WIDGET (tree_view);
2535
2536   if (gtk_widget_get_can_focus (widget) && !gtk_widget_has_focus (widget))
2537     gtk_widget_grab_focus (widget);
2538   GTK_TREE_VIEW_UNSET_FLAG (tree_view, GTK_TREE_VIEW_DRAW_KEYFOCUS);
2539 }
2540
2541 static inline gboolean
2542 row_is_separator (GtkTreeView *tree_view,
2543                   GtkTreeIter *iter,
2544                   GtkTreePath *path)
2545 {
2546   gboolean is_separator = FALSE;
2547
2548   if (tree_view->priv->row_separator_func)
2549     {
2550       GtkTreeIter tmpiter;
2551
2552       if (iter)
2553         tmpiter = *iter;
2554       else
2555         gtk_tree_model_get_iter (tree_view->priv->model, &tmpiter, path);
2556
2557       is_separator = tree_view->priv->row_separator_func (tree_view->priv->model,
2558                                                           &tmpiter,
2559                                                           tree_view->priv->row_separator_data);
2560     }
2561
2562   return is_separator;
2563 }
2564
2565 static gboolean
2566 gtk_tree_view_button_press (GtkWidget      *widget,
2567                             GdkEventButton *event)
2568 {
2569   GtkTreeView *tree_view = GTK_TREE_VIEW (widget);
2570   GList *list;
2571   GtkTreeViewColumn *column = NULL;
2572   gint i;
2573   GdkRectangle background_area;
2574   GdkRectangle cell_area;
2575   gint vertical_separator;
2576   gint horizontal_separator;
2577   gboolean path_is_selectable;
2578   gboolean rtl;
2579
2580   rtl = (gtk_widget_get_direction (widget) == GTK_TEXT_DIR_RTL);
2581   gtk_tree_view_stop_editing (tree_view, FALSE);
2582   gtk_widget_style_get (widget,
2583                         "vertical-separator", &vertical_separator,
2584                         "horizontal-separator", &horizontal_separator,
2585                         NULL);
2586
2587
2588   /* Because grab_focus can cause reentrancy, we delay grab_focus until after
2589    * we're done handling the button press.
2590    */
2591
2592   if (event->window == tree_view->priv->bin_window)
2593     {
2594       GtkRBNode *node;
2595       GtkRBTree *tree;
2596       GtkTreePath *path;
2597       gchar *path_string;
2598       gint depth;
2599       gint new_y;
2600       gint y_offset;
2601       gint dval;
2602       gint pre_val, aft_val;
2603       GtkTreeViewColumn *column = NULL;
2604       GtkCellRenderer *focus_cell = NULL;
2605       gint column_handled_click = FALSE;
2606       gboolean row_double_click = FALSE;
2607       gboolean rtl;
2608       gboolean node_selected;
2609
2610       /* Empty tree? */
2611       if (tree_view->priv->tree == NULL)
2612         {
2613           grab_focus_and_unset_draw_keyfocus (tree_view);
2614           return TRUE;
2615         }
2616
2617       /* are we in an arrow? */
2618       if (tree_view->priv->prelight_node &&
2619           GTK_TREE_VIEW_FLAG_SET (tree_view, GTK_TREE_VIEW_ARROW_PRELIT) &&
2620           TREE_VIEW_DRAW_EXPANDERS (tree_view))
2621         {
2622           if (event->button == 1)
2623             {
2624               gtk_grab_add (widget);
2625               tree_view->priv->button_pressed_node = tree_view->priv->prelight_node;
2626               tree_view->priv->button_pressed_tree = tree_view->priv->prelight_tree;
2627               gtk_tree_view_draw_arrow (GTK_TREE_VIEW (widget),
2628                                         tree_view->priv->prelight_tree,
2629                                         tree_view->priv->prelight_node,
2630                                         event->x,
2631                                         event->y);
2632             }
2633
2634           grab_focus_and_unset_draw_keyfocus (tree_view);
2635           return TRUE;
2636         }
2637
2638       /* find the node that was clicked */
2639       new_y = TREE_WINDOW_Y_TO_RBTREE_Y(tree_view, event->y);
2640       if (new_y < 0)
2641         new_y = 0;
2642       y_offset = -_gtk_rbtree_find_offset (tree_view->priv->tree, new_y, &tree, &node);
2643
2644       if (node == NULL)
2645         {
2646           /* We clicked in dead space */
2647           grab_focus_and_unset_draw_keyfocus (tree_view);
2648           return TRUE;
2649         }
2650
2651       /* Get the path and the node */
2652       path = _gtk_tree_view_find_path (tree_view, tree, node);
2653       path_is_selectable = !row_is_separator (tree_view, NULL, path);
2654
2655       if (!path_is_selectable)
2656         {
2657           gtk_tree_path_free (path);
2658           grab_focus_and_unset_draw_keyfocus (tree_view);
2659           return TRUE;
2660         }
2661
2662       depth = gtk_tree_path_get_depth (path);
2663       background_area.y = y_offset + event->y;
2664       background_area.height = ROW_HEIGHT (tree_view, GTK_RBNODE_GET_HEIGHT (node));
2665       background_area.x = 0;
2666
2667
2668       /* Let the column have a chance at selecting it. */
2669       rtl = (gtk_widget_get_direction (GTK_WIDGET (tree_view)) == GTK_TEXT_DIR_RTL);
2670       for (list = (rtl ? g_list_last (tree_view->priv->columns) : g_list_first (tree_view->priv->columns));
2671            list; list = (rtl ? list->prev : list->next))
2672         {
2673           GtkTreeViewColumn *candidate = list->data;
2674
2675           if (!candidate->visible)
2676             continue;
2677
2678           background_area.width = candidate->width;
2679           if ((background_area.x > (gint) event->x) ||
2680               (background_area.x + background_area.width <= (gint) event->x))
2681             {
2682               background_area.x += background_area.width;
2683               continue;
2684             }
2685
2686           /* we found the focus column */
2687           column = candidate;
2688           cell_area = background_area;
2689           cell_area.width -= horizontal_separator;
2690           cell_area.height -= vertical_separator;
2691           cell_area.x += horizontal_separator/2;
2692           cell_area.y += vertical_separator/2;
2693           if (gtk_tree_view_is_expander_column (tree_view, column))
2694             {
2695               if (!rtl)
2696                 cell_area.x += (depth - 1) * tree_view->priv->level_indentation;
2697               cell_area.width -= (depth - 1) * tree_view->priv->level_indentation;
2698
2699               if (TREE_VIEW_DRAW_EXPANDERS (tree_view))
2700                 {
2701                   if (!rtl)
2702                     cell_area.x += depth * tree_view->priv->expander_size;
2703                   cell_area.width -= depth * tree_view->priv->expander_size;
2704                 }
2705             }
2706           break;
2707         }
2708
2709       if (column == NULL)
2710         {
2711           gtk_tree_path_free (path);
2712           grab_focus_and_unset_draw_keyfocus (tree_view);
2713           return FALSE;
2714         }
2715
2716       tree_view->priv->focus_column = column;
2717
2718       /* decide if we edit */
2719       if (event->type == GDK_BUTTON_PRESS && event->button == 1 &&
2720           !(event->state & gtk_accelerator_get_default_mod_mask ()))
2721         {
2722           GtkTreePath *anchor;
2723           GtkTreeIter iter;
2724
2725           gtk_tree_model_get_iter (tree_view->priv->model, &iter, path);
2726           gtk_tree_view_column_cell_set_cell_data (column,
2727                                                    tree_view->priv->model,
2728                                                    &iter,
2729                                                    GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_PARENT),
2730                                                    node->children?TRUE:FALSE);
2731
2732           if (tree_view->priv->anchor)
2733             anchor = gtk_tree_row_reference_get_path (tree_view->priv->anchor);
2734           else
2735             anchor = NULL;
2736
2737           if ((anchor && !gtk_tree_path_compare (anchor, path))
2738               || !_gtk_tree_view_column_has_editable_cell (column))
2739             {
2740               GtkCellEditable *cell_editable = NULL;
2741
2742               /* FIXME: get the right flags */
2743               guint flags = 0;
2744
2745               path_string = gtk_tree_path_to_string (path);
2746
2747               if (_gtk_tree_view_column_cell_event (column,
2748                                                     &cell_editable,
2749                                                     (GdkEvent *)event,
2750                                                     path_string,
2751                                                     &background_area,
2752                                                     &cell_area, flags))
2753                 {
2754                   if (cell_editable != NULL)
2755                     {
2756                       gint left, right;
2757                       GdkRectangle area;
2758
2759                       area = cell_area;
2760                       _gtk_tree_view_column_get_neighbor_sizes (column, _gtk_tree_view_column_get_edited_cell (column), &left, &right);
2761
2762                       area.x += left;
2763                       area.width -= right + left;
2764
2765                       gtk_tree_view_real_start_editing (tree_view,
2766                                                         column,
2767                                                         path,
2768                                                         cell_editable,
2769                                                         &area,
2770                                                         (GdkEvent *)event,
2771                                                         flags);
2772                       g_free (path_string);
2773                       gtk_tree_path_free (path);
2774                       gtk_tree_path_free (anchor);
2775                       return TRUE;
2776                     }
2777                   column_handled_click = TRUE;
2778                 }
2779               g_free (path_string);
2780             }
2781           if (anchor)
2782             gtk_tree_path_free (anchor);
2783         }
2784
2785       /* select */
2786       node_selected = GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_SELECTED);
2787       pre_val = tree_view->priv->vadjustment->value;
2788
2789       /* we only handle selection modifications on the first button press
2790        */
2791       if (event->type == GDK_BUTTON_PRESS)
2792         {
2793           if ((event->state & GDK_CONTROL_MASK) == GDK_CONTROL_MASK)
2794             tree_view->priv->ctrl_pressed = TRUE;
2795           if ((event->state & GDK_SHIFT_MASK) == GDK_SHIFT_MASK)
2796             tree_view->priv->shift_pressed = TRUE;
2797
2798           focus_cell = _gtk_tree_view_column_get_cell_at_pos (column, event->x - background_area.x);
2799           if (focus_cell)
2800             gtk_tree_view_column_focus_cell (column, focus_cell);
2801
2802           if (event->state & GDK_CONTROL_MASK)
2803             {
2804               gtk_tree_view_real_set_cursor (tree_view, path, FALSE, TRUE);
2805               gtk_tree_view_real_toggle_cursor_row (tree_view);
2806             }
2807           else if (event->state & GDK_SHIFT_MASK)
2808             {
2809               gtk_tree_view_real_set_cursor (tree_view, path, FALSE, TRUE);
2810               gtk_tree_view_real_select_cursor_row (tree_view, FALSE);
2811             }
2812           else
2813             {
2814               gtk_tree_view_real_set_cursor (tree_view, path, TRUE, TRUE);
2815             }
2816
2817           tree_view->priv->ctrl_pressed = FALSE;
2818           tree_view->priv->shift_pressed = FALSE;
2819         }
2820
2821       /* the treeview may have been scrolled because of _set_cursor,
2822        * correct here
2823        */
2824
2825       aft_val = tree_view->priv->vadjustment->value;
2826       dval = pre_val - aft_val;
2827
2828       cell_area.y += dval;
2829       background_area.y += dval;
2830
2831       /* Save press to possibly begin a drag
2832        */
2833       if (!column_handled_click &&
2834           !tree_view->priv->in_grab &&
2835           tree_view->priv->pressed_button < 0)
2836         {
2837           tree_view->priv->pressed_button = event->button;
2838           tree_view->priv->press_start_x = event->x;
2839           tree_view->priv->press_start_y = event->y;
2840
2841           if (tree_view->priv->rubber_banding_enable
2842               && !node_selected
2843               && tree_view->priv->selection->type == GTK_SELECTION_MULTIPLE)
2844             {
2845               tree_view->priv->press_start_y += tree_view->priv->dy;
2846               tree_view->priv->rubber_band_x = event->x;
2847               tree_view->priv->rubber_band_y = event->y + tree_view->priv->dy;
2848               tree_view->priv->rubber_band_status = RUBBER_BAND_MAYBE_START;
2849
2850               if ((event->state & GDK_CONTROL_MASK) == GDK_CONTROL_MASK)
2851                 tree_view->priv->rubber_band_ctrl = TRUE;
2852               if ((event->state & GDK_SHIFT_MASK) == GDK_SHIFT_MASK)
2853                 tree_view->priv->rubber_band_shift = TRUE;
2854             }
2855         }
2856
2857       /* Test if a double click happened on the same row. */
2858       if (event->button == 1 && event->type == GDK_BUTTON_PRESS)
2859         {
2860           int double_click_time, double_click_distance;
2861
2862           g_object_get (gtk_settings_get_default (),
2863                         "gtk-double-click-time", &double_click_time,
2864                         "gtk-double-click-distance", &double_click_distance,
2865                         NULL);
2866
2867           /* Same conditions as _gdk_event_button_generate */
2868           if (tree_view->priv->last_button_x != -1 &&
2869               (event->time < tree_view->priv->last_button_time + double_click_time) &&
2870               (ABS (event->x - tree_view->priv->last_button_x) <= double_click_distance) &&
2871               (ABS (event->y - tree_view->priv->last_button_y) <= double_click_distance))
2872             {
2873               /* We do no longer compare paths of this row and the
2874                * row clicked previously.  We use the double click
2875                * distance to decide whether this is a valid click,
2876                * allowing the mouse to slightly move over another row.
2877                */
2878               row_double_click = TRUE;
2879
2880               tree_view->priv->last_button_time = 0;
2881               tree_view->priv->last_button_x = -1;
2882               tree_view->priv->last_button_y = -1;
2883             }
2884           else
2885             {
2886               tree_view->priv->last_button_time = event->time;
2887               tree_view->priv->last_button_x = event->x;
2888               tree_view->priv->last_button_y = event->y;
2889             }
2890         }
2891
2892       if (row_double_click)
2893         {
2894           gtk_grab_remove (widget);
2895           gtk_tree_view_row_activated (tree_view, path, column);
2896
2897           if (tree_view->priv->pressed_button == event->button)
2898             tree_view->priv->pressed_button = -1;
2899         }
2900
2901       gtk_tree_path_free (path);
2902
2903       /* If we activated the row through a double click we don't want to grab
2904        * focus back, as moving focus to another widget is pretty common.
2905        */
2906       if (!row_double_click)
2907         grab_focus_and_unset_draw_keyfocus (tree_view);
2908
2909       return TRUE;
2910     }
2911
2912   /* We didn't click in the window.  Let's check to see if we clicked on a column resize window.
2913    */
2914   for (i = 0, list = tree_view->priv->columns; list; list = list->next, i++)
2915     {
2916       column = list->data;
2917       if (event->window == column->window &&
2918           column->resizable &&
2919           column->window)
2920         {
2921           gpointer drag_data;
2922
2923           if (event->type == GDK_2BUTTON_PRESS &&
2924               gtk_tree_view_column_get_sizing (column) != GTK_TREE_VIEW_COLUMN_AUTOSIZE)
2925             {
2926               column->use_resized_width = FALSE;
2927               _gtk_tree_view_column_autosize (tree_view, column);
2928               return TRUE;
2929             }
2930
2931           if (gdk_pointer_grab (column->window, FALSE,
2932                                 GDK_POINTER_MOTION_HINT_MASK |
2933                                 GDK_BUTTON1_MOTION_MASK |
2934                                 GDK_BUTTON_RELEASE_MASK,
2935                                 NULL, NULL, event->time))
2936             return FALSE;
2937
2938           gtk_grab_add (widget);
2939           GTK_TREE_VIEW_SET_FLAG (tree_view, GTK_TREE_VIEW_IN_COLUMN_RESIZE);
2940           column->resized_width = column->width - tree_view->priv->last_extra_space_per_column;
2941
2942           /* block attached dnd signal handler */
2943           drag_data = g_object_get_data (G_OBJECT (widget), "gtk-site-data");
2944           if (drag_data)
2945             g_signal_handlers_block_matched (widget,
2946                                              G_SIGNAL_MATCH_DATA,
2947                                              0, 0, NULL, NULL,
2948                                              drag_data);
2949
2950           tree_view->priv->drag_pos = i;
2951           tree_view->priv->x_drag = column->button->allocation.x + (rtl ? 0 : column->button->allocation.width);
2952
2953           if (!gtk_widget_has_focus (widget))
2954             gtk_widget_grab_focus (widget);
2955
2956           return TRUE;
2957         }
2958     }
2959   return FALSE;
2960 }
2961
2962 /* GtkWidget::button_release_event helper */
2963 static gboolean
2964 gtk_tree_view_button_release_drag_column (GtkWidget      *widget,
2965                                           GdkEventButton *event)
2966 {
2967   GtkTreeView *tree_view;
2968   GList *l;
2969   gboolean rtl;
2970
2971   tree_view = GTK_TREE_VIEW (widget);
2972
2973   rtl = (gtk_widget_get_direction (widget) == GTK_TEXT_DIR_RTL);
2974   gdk_display_pointer_ungrab (gtk_widget_get_display (widget), GDK_CURRENT_TIME);
2975   gdk_display_keyboard_ungrab (gtk_widget_get_display (widget), GDK_CURRENT_TIME);
2976
2977   /* Move the button back */
2978   g_object_ref (tree_view->priv->drag_column->button);
2979   gtk_container_remove (GTK_CONTAINER (tree_view), tree_view->priv->drag_column->button);
2980   gtk_widget_set_parent_window (tree_view->priv->drag_column->button, tree_view->priv->header_window);
2981   gtk_widget_set_parent (tree_view->priv->drag_column->button, GTK_WIDGET (tree_view));
2982   g_object_unref (tree_view->priv->drag_column->button);
2983   gtk_widget_queue_resize (widget);
2984   if (tree_view->priv->drag_column->resizable)
2985     {
2986       gdk_window_raise (tree_view->priv->drag_column->window);
2987       gdk_window_show (tree_view->priv->drag_column->window);
2988     }
2989   else
2990     gdk_window_hide (tree_view->priv->drag_column->window);
2991
2992   gtk_widget_grab_focus (tree_view->priv->drag_column->button);
2993
2994   if (rtl)
2995     {
2996       if (tree_view->priv->cur_reorder &&
2997           tree_view->priv->cur_reorder->right_column != tree_view->priv->drag_column)
2998         gtk_tree_view_move_column_after (tree_view, tree_view->priv->drag_column,
2999                                          tree_view->priv->cur_reorder->right_column);
3000     }
3001   else
3002     {
3003       if (tree_view->priv->cur_reorder &&
3004           tree_view->priv->cur_reorder->left_column != tree_view->priv->drag_column)
3005         gtk_tree_view_move_column_after (tree_view, tree_view->priv->drag_column,
3006                                          tree_view->priv->cur_reorder->left_column);
3007     }
3008   tree_view->priv->drag_column = NULL;
3009   gdk_window_hide (tree_view->priv->drag_window);
3010
3011   for (l = tree_view->priv->column_drag_info; l != NULL; l = l->next)
3012     g_slice_free (GtkTreeViewColumnReorder, l->data);
3013   g_list_free (tree_view->priv->column_drag_info);
3014   tree_view->priv->column_drag_info = NULL;
3015   tree_view->priv->cur_reorder = NULL;
3016
3017   if (tree_view->priv->drag_highlight_window)
3018     gdk_window_hide (tree_view->priv->drag_highlight_window);
3019
3020   /* Reset our flags */
3021   tree_view->priv->drag_column_window_state = DRAG_COLUMN_WINDOW_STATE_UNSET;
3022   GTK_TREE_VIEW_UNSET_FLAG (tree_view, GTK_TREE_VIEW_IN_COLUMN_DRAG);
3023
3024   return TRUE;
3025 }
3026
3027 /* GtkWidget::button_release_event helper */
3028 static gboolean
3029 gtk_tree_view_button_release_column_resize (GtkWidget      *widget,
3030                                             GdkEventButton *event)
3031 {
3032   GtkTreeView *tree_view;
3033   gpointer drag_data;
3034
3035   tree_view = GTK_TREE_VIEW (widget);
3036
3037   tree_view->priv->drag_pos = -1;
3038
3039   /* unblock attached dnd signal handler */
3040   drag_data = g_object_get_data (G_OBJECT (widget), "gtk-site-data");
3041   if (drag_data)
3042     g_signal_handlers_unblock_matched (widget,
3043                                        G_SIGNAL_MATCH_DATA,
3044                                        0, 0, NULL, NULL,
3045                                        drag_data);
3046
3047   GTK_TREE_VIEW_UNSET_FLAG (tree_view, GTK_TREE_VIEW_IN_COLUMN_RESIZE);
3048   gtk_grab_remove (widget);
3049   gdk_display_pointer_ungrab (gdk_drawable_get_display (event->window),
3050                               event->time);
3051   return TRUE;
3052 }
3053
3054 static gboolean
3055 gtk_tree_view_button_release (GtkWidget      *widget,
3056                               GdkEventButton *event)
3057 {
3058   GtkTreeView *tree_view = GTK_TREE_VIEW (widget);
3059
3060   if (GTK_TREE_VIEW_FLAG_SET (tree_view, GTK_TREE_VIEW_IN_COLUMN_DRAG))
3061     return gtk_tree_view_button_release_drag_column (widget, event);
3062
3063   if (tree_view->priv->rubber_band_status)
3064     gtk_tree_view_stop_rubber_band (tree_view);
3065
3066   if (tree_view->priv->pressed_button == event->button)
3067     tree_view->priv->pressed_button = -1;
3068
3069   if (GTK_TREE_VIEW_FLAG_SET (tree_view, GTK_TREE_VIEW_IN_COLUMN_RESIZE))
3070     return gtk_tree_view_button_release_column_resize (widget, event);
3071
3072   if (tree_view->priv->button_pressed_node == NULL)
3073     return FALSE;
3074
3075   if (event->button == 1)
3076     {
3077       gtk_grab_remove (widget);
3078       if (tree_view->priv->button_pressed_node == tree_view->priv->prelight_node &&
3079           GTK_TREE_VIEW_FLAG_SET (tree_view, GTK_TREE_VIEW_ARROW_PRELIT))
3080         {
3081           GtkTreePath *path = NULL;
3082
3083           path = _gtk_tree_view_find_path (tree_view,
3084                                            tree_view->priv->button_pressed_tree,
3085                                            tree_view->priv->button_pressed_node);
3086           /* Actually activate the node */
3087           if (tree_view->priv->button_pressed_node->children == NULL)
3088             gtk_tree_view_real_expand_row (tree_view, path,
3089                                            tree_view->priv->button_pressed_tree,
3090                                            tree_view->priv->button_pressed_node,
3091                                            FALSE, TRUE);
3092           else
3093             gtk_tree_view_real_collapse_row (GTK_TREE_VIEW (widget), path,
3094                                              tree_view->priv->button_pressed_tree,
3095                                              tree_view->priv->button_pressed_node, TRUE);
3096           gtk_tree_path_free (path);
3097         }
3098
3099       tree_view->priv->button_pressed_tree = NULL;
3100       tree_view->priv->button_pressed_node = NULL;
3101     }
3102
3103   return TRUE;
3104 }
3105
3106 static gboolean
3107 gtk_tree_view_grab_broken (GtkWidget          *widget,
3108                            GdkEventGrabBroken *event)
3109 {
3110   GtkTreeView *tree_view = GTK_TREE_VIEW (widget);
3111
3112   if (GTK_TREE_VIEW_FLAG_SET (tree_view, GTK_TREE_VIEW_IN_COLUMN_DRAG))
3113     gtk_tree_view_button_release_drag_column (widget, (GdkEventButton *)event);
3114
3115   if (GTK_TREE_VIEW_FLAG_SET (tree_view, GTK_TREE_VIEW_IN_COLUMN_RESIZE))
3116     gtk_tree_view_button_release_column_resize (widget, (GdkEventButton *)event);
3117
3118   return TRUE;
3119 }
3120
3121 #if 0
3122 static gboolean
3123 gtk_tree_view_configure (GtkWidget *widget,
3124                          GdkEventConfigure *event)
3125 {
3126   GtkTreeView *tree_view;
3127
3128   tree_view = GTK_TREE_VIEW (widget);
3129   tree_view->priv->search_position_func (tree_view, tree_view->priv->search_window);
3130
3131   return FALSE;
3132 }
3133 #endif
3134
3135 /* GtkWidget::motion_event function set.
3136  */
3137
3138 static gboolean
3139 coords_are_over_arrow (GtkTreeView *tree_view,
3140                        GtkRBTree   *tree,
3141                        GtkRBNode   *node,
3142                        /* these are in bin window coords */
3143                        gint         x,
3144                        gint         y)
3145 {
3146   GdkRectangle arrow;
3147   gint x2;
3148
3149   if (!GTK_WIDGET_REALIZED (tree_view))
3150     return FALSE;
3151
3152   if ((node->flags & GTK_RBNODE_IS_PARENT) == 0)
3153     return FALSE;
3154
3155   arrow.y = BACKGROUND_FIRST_PIXEL (tree_view, tree, node);
3156
3157   arrow.height = ROW_HEIGHT (tree_view, BACKGROUND_HEIGHT (node));
3158
3159   gtk_tree_view_get_arrow_xrange (tree_view, tree, &arrow.x, &x2);
3160
3161   arrow.width = x2 - arrow.x;
3162
3163   return (x >= arrow.x &&
3164           x < (arrow.x + arrow.width) &&
3165           y >= arrow.y &&
3166           y < (arrow.y + arrow.height));
3167 }
3168
3169 static gboolean
3170 auto_expand_timeout (gpointer data)
3171 {
3172   GtkTreeView *tree_view = GTK_TREE_VIEW (data);
3173   GtkTreePath *path;
3174
3175   if (tree_view->priv->prelight_node)
3176     {
3177       path = _gtk_tree_view_find_path (tree_view,
3178                                        tree_view->priv->prelight_tree,
3179                                        tree_view->priv->prelight_node);
3180
3181       if (tree_view->priv->prelight_node->children)
3182         gtk_tree_view_collapse_row (tree_view, path);
3183       else
3184         gtk_tree_view_expand_row (tree_view, path, FALSE);
3185
3186       gtk_tree_path_free (path);
3187     }
3188
3189   tree_view->priv->auto_expand_timeout = 0;
3190
3191   return FALSE;
3192 }
3193
3194 static void
3195 remove_auto_expand_timeout (GtkTreeView *tree_view)
3196 {
3197   if (tree_view->priv->auto_expand_timeout != 0)
3198     {
3199       g_source_remove (tree_view->priv->auto_expand_timeout);
3200       tree_view->priv->auto_expand_timeout = 0;
3201     }
3202 }
3203
3204 static void
3205 do_prelight (GtkTreeView *tree_view,
3206              GtkRBTree   *tree,
3207              GtkRBNode   *node,
3208              /* these are in bin_window coords */
3209              gint         x,
3210              gint         y)
3211 {
3212   if (tree_view->priv->prelight_tree == tree &&
3213       tree_view->priv->prelight_node == node)
3214     {
3215       /*  We are still on the same node,
3216           but we might need to take care of the arrow  */
3217
3218       if (tree && node && TREE_VIEW_DRAW_EXPANDERS (tree_view))
3219         {
3220           gboolean over_arrow;
3221           gboolean flag_set;
3222
3223           over_arrow = coords_are_over_arrow (tree_view, tree, node, x, y);
3224           flag_set = GTK_TREE_VIEW_FLAG_SET (tree_view,
3225                                              GTK_TREE_VIEW_ARROW_PRELIT);
3226
3227           if (over_arrow != flag_set)
3228             {
3229               if (over_arrow)
3230                 GTK_TREE_VIEW_SET_FLAG (tree_view,
3231                                         GTK_TREE_VIEW_ARROW_PRELIT);
3232               else
3233                 GTK_TREE_VIEW_UNSET_FLAG (tree_view,
3234                                           GTK_TREE_VIEW_ARROW_PRELIT);
3235
3236               gtk_tree_view_draw_arrow (tree_view, tree, node, x, y);
3237             }
3238         }
3239
3240       return;
3241     }
3242
3243   if (tree_view->priv->prelight_tree && tree_view->priv->prelight_node)
3244     {
3245       /*  Unprelight the old node and arrow  */
3246
3247       GTK_RBNODE_UNSET_FLAG (tree_view->priv->prelight_node,
3248                              GTK_RBNODE_IS_PRELIT);
3249
3250       if (GTK_TREE_VIEW_FLAG_SET (tree_view, GTK_TREE_VIEW_ARROW_PRELIT)
3251           && TREE_VIEW_DRAW_EXPANDERS (tree_view))
3252         {
3253           GTK_TREE_VIEW_UNSET_FLAG (tree_view, GTK_TREE_VIEW_ARROW_PRELIT);
3254
3255           gtk_tree_view_draw_arrow (tree_view,
3256                                     tree_view->priv->prelight_tree,
3257                                     tree_view->priv->prelight_node,
3258                                     x,
3259                                     y);
3260         }
3261
3262       _gtk_tree_view_queue_draw_node (tree_view,
3263                                       tree_view->priv->prelight_tree,
3264                                       tree_view->priv->prelight_node,
3265                                       NULL);
3266     }
3267
3268
3269   if (tree_view->priv->hover_expand)
3270     remove_auto_expand_timeout (tree_view);
3271
3272   /*  Set the new prelight values  */
3273   tree_view->priv->prelight_node = node;
3274   tree_view->priv->prelight_tree = tree;
3275
3276   if (!node || !tree)
3277     return;
3278
3279   /*  Prelight the new node and arrow  */
3280
3281   if (TREE_VIEW_DRAW_EXPANDERS (tree_view)
3282       && coords_are_over_arrow (tree_view, tree, node, x, y))
3283     {
3284       GTK_TREE_VIEW_SET_FLAG (tree_view, GTK_TREE_VIEW_ARROW_PRELIT);
3285
3286       gtk_tree_view_draw_arrow (tree_view, tree, node, x, y);
3287     }
3288
3289   GTK_RBNODE_SET_FLAG (node, GTK_RBNODE_IS_PRELIT);
3290
3291   _gtk_tree_view_queue_draw_node (tree_view, tree, node, NULL);
3292
3293   if (tree_view->priv->hover_expand)
3294     {
3295       tree_view->priv->auto_expand_timeout =
3296         gdk_threads_add_timeout (AUTO_EXPAND_TIMEOUT, auto_expand_timeout, tree_view);
3297     }
3298 }
3299
3300 static void
3301 prelight_or_select (GtkTreeView *tree_view,
3302                     GtkRBTree   *tree,
3303                     GtkRBNode   *node,
3304                     /* these are in bin_window coords */
3305                     gint         x,
3306                     gint         y)
3307 {
3308   GtkSelectionMode mode = gtk_tree_selection_get_mode (tree_view->priv->selection);
3309
3310   if (tree_view->priv->hover_selection &&
3311       (mode == GTK_SELECTION_SINGLE || mode == GTK_SELECTION_BROWSE) &&
3312       !(tree_view->priv->edited_column &&
3313         tree_view->priv->edited_column->editable_widget))
3314     {
3315       if (node)
3316         {
3317           if (!GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_SELECTED))
3318             {
3319               GtkTreePath *path;
3320
3321               path = _gtk_tree_view_find_path (tree_view, tree, node);
3322               gtk_tree_selection_select_path (tree_view->priv->selection, path);
3323               if (GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_SELECTED))
3324                 {
3325                   GTK_TREE_VIEW_UNSET_FLAG (tree_view, GTK_TREE_VIEW_DRAW_KEYFOCUS);
3326                   gtk_tree_view_real_set_cursor (tree_view, path, FALSE, FALSE);
3327                 }
3328               gtk_tree_path_free (path);
3329             }
3330         }
3331
3332       else if (mode == GTK_SELECTION_SINGLE)
3333         gtk_tree_selection_unselect_all (tree_view->priv->selection);
3334     }
3335
3336     do_prelight (tree_view, tree, node, x, y);
3337 }
3338
3339 static void
3340 ensure_unprelighted (GtkTreeView *tree_view)
3341 {
3342   do_prelight (tree_view,
3343                NULL, NULL,
3344                -1000, -1000); /* coords not possibly over an arrow */
3345
3346   g_assert (tree_view->priv->prelight_node == NULL);
3347 }
3348
3349 static void
3350 update_prelight (GtkTreeView *tree_view,
3351                  gint         x,
3352                  gint         y)
3353 {
3354   int new_y;
3355   GtkRBTree *tree;
3356   GtkRBNode *node;
3357
3358   if (tree_view->priv->tree == NULL)
3359     return;
3360
3361   if (x == -10000)
3362     {
3363       ensure_unprelighted (tree_view);
3364       return;
3365     }
3366
3367   new_y = TREE_WINDOW_Y_TO_RBTREE_Y (tree_view, y);
3368   if (new_y < 0)
3369     new_y = 0;
3370
3371   _gtk_rbtree_find_offset (tree_view->priv->tree,
3372                            new_y, &tree, &node);
3373
3374   if (node)
3375     prelight_or_select (tree_view, tree, node, x, y);
3376 }
3377
3378
3379
3380
3381 /* Our motion arrow is either a box (in the case of the original spot)
3382  * or an arrow.  It is expander_size wide.
3383  */
3384 /*
3385  * 11111111111111
3386  * 01111111111110
3387  * 00111111111100
3388  * 00011111111000
3389  * 00001111110000
3390  * 00000111100000
3391  * 00000111100000
3392  * 00000111100000
3393  * ~ ~ ~ ~ ~ ~ ~
3394  * 00000111100000
3395  * 00000111100000
3396  * 00000111100000
3397  * 00001111110000
3398  * 00011111111000
3399  * 00111111111100
3400  * 01111111111110
3401  * 11111111111111
3402  */
3403
3404 static void
3405 gtk_tree_view_motion_draw_column_motion_arrow (GtkTreeView *tree_view)
3406 {
3407   GtkTreeViewColumnReorder *reorder = tree_view->priv->cur_reorder;
3408   GtkWidget *widget = GTK_WIDGET (tree_view);
3409   GdkBitmap *mask = NULL;
3410   gint x;
3411   gint y;
3412   gint width;
3413   gint height;
3414   gint arrow_type = DRAG_COLUMN_WINDOW_STATE_UNSET;
3415   GdkWindowAttr attributes;
3416   guint attributes_mask;
3417
3418   if (!reorder ||
3419       reorder->left_column == tree_view->priv->drag_column ||
3420       reorder->right_column == tree_view->priv->drag_column)
3421     arrow_type = DRAG_COLUMN_WINDOW_STATE_ORIGINAL;
3422   else if (reorder->left_column || reorder->right_column)
3423     {
3424       GdkRectangle visible_rect;
3425       gtk_tree_view_get_visible_rect (tree_view, &visible_rect);
3426       if (reorder->left_column)
3427         x = reorder->left_column->button->allocation.x + reorder->left_column->button->allocation.width;
3428       else
3429         x = reorder->right_column->button->allocation.x;
3430
3431       if (x < visible_rect.x)
3432         arrow_type = DRAG_COLUMN_WINDOW_STATE_ARROW_LEFT;
3433       else if (x > visible_rect.x + visible_rect.width)
3434         arrow_type = DRAG_COLUMN_WINDOW_STATE_ARROW_RIGHT;
3435       else
3436         arrow_type = DRAG_COLUMN_WINDOW_STATE_ARROW;
3437     }
3438
3439   /* We want to draw the rectangle over the initial location. */
3440   if (arrow_type == DRAG_COLUMN_WINDOW_STATE_ORIGINAL)
3441     {
3442       GdkGC *gc;
3443       GdkColor col;
3444
3445       if (tree_view->priv->drag_column_window_state != DRAG_COLUMN_WINDOW_STATE_ORIGINAL)
3446         {
3447           if (tree_view->priv->drag_highlight_window)
3448             {
3449               gdk_window_set_user_data (tree_view->priv->drag_highlight_window,
3450                                         NULL);
3451               gdk_window_destroy (tree_view->priv->drag_highlight_window);
3452             }
3453
3454           attributes.window_type = GDK_WINDOW_CHILD;
3455           attributes.wclass = GDK_INPUT_OUTPUT;
3456           attributes.x = tree_view->priv->drag_column_x;
3457           attributes.y = 0;
3458           width = attributes.width = tree_view->priv->drag_column->button->allocation.width;
3459           height = attributes.height = tree_view->priv->drag_column->button->allocation.height;
3460           attributes.visual = gtk_widget_get_visual (GTK_WIDGET (tree_view));
3461           attributes.colormap = gtk_widget_get_colormap (GTK_WIDGET (tree_view));
3462           attributes.event_mask = GDK_VISIBILITY_NOTIFY_MASK | GDK_EXPOSURE_MASK | GDK_POINTER_MOTION_MASK;
3463           attributes_mask = GDK_WA_X | GDK_WA_Y | GDK_WA_VISUAL | GDK_WA_COLORMAP;
3464           tree_view->priv->drag_highlight_window = gdk_window_new (tree_view->priv->header_window, &attributes, attributes_mask);
3465           gdk_window_set_user_data (tree_view->priv->drag_highlight_window, GTK_WIDGET (tree_view));
3466
3467           mask = gdk_pixmap_new (tree_view->priv->drag_highlight_window, width, height, 1);
3468           gc = gdk_gc_new (mask);
3469           col.pixel = 1;
3470           gdk_gc_set_foreground (gc, &col);
3471           gdk_draw_rectangle (mask, gc, TRUE, 0, 0, width, height);
3472           col.pixel = 0;
3473           gdk_gc_set_foreground(gc, &col);
3474           gdk_draw_rectangle (mask, gc, TRUE, 2, 2, width - 4, height - 4);
3475           g_object_unref (gc);
3476
3477           gdk_window_shape_combine_mask (tree_view->priv->drag_highlight_window,
3478                                          mask, 0, 0);
3479           if (mask) g_object_unref (mask);
3480           tree_view->priv->drag_column_window_state = DRAG_COLUMN_WINDOW_STATE_ORIGINAL;
3481         }
3482     }
3483   else if (arrow_type == DRAG_COLUMN_WINDOW_STATE_ARROW)
3484     {
3485       gint i, j = 1;
3486       GdkGC *gc;
3487       GdkColor col;
3488
3489       width = tree_view->priv->expander_size;
3490
3491       /* Get x, y, width, height of arrow */
3492       gdk_window_get_origin (tree_view->priv->header_window, &x, &y);
3493       if (reorder->left_column)
3494         {
3495           x += reorder->left_column->button->allocation.x + reorder->left_column->button->allocation.width - width/2;
3496           height = reorder->left_column->button->allocation.height;
3497         }
3498       else
3499         {
3500           x += reorder->right_column->button->allocation.x - width/2;
3501           height = reorder->right_column->button->allocation.height;
3502         }
3503       y -= tree_view->priv->expander_size/2; /* The arrow takes up only half the space */
3504       height += tree_view->priv->expander_size;
3505
3506       /* Create the new window */
3507       if (tree_view->priv->drag_column_window_state != DRAG_COLUMN_WINDOW_STATE_ARROW)
3508         {
3509           if (tree_view->priv->drag_highlight_window)
3510             {
3511               gdk_window_set_user_data (tree_view->priv->drag_highlight_window,
3512                                         NULL);
3513               gdk_window_destroy (tree_view->priv->drag_highlight_window);
3514             }
3515
3516           attributes.window_type = GDK_WINDOW_TEMP;
3517           attributes.wclass = GDK_INPUT_OUTPUT;
3518           attributes.visual = gtk_widget_get_visual (GTK_WIDGET (tree_view));
3519           attributes.colormap = gtk_widget_get_colormap (GTK_WIDGET (tree_view));
3520           attributes.event_mask = GDK_VISIBILITY_NOTIFY_MASK | GDK_EXPOSURE_MASK | GDK_POINTER_MOTION_MASK;
3521           attributes_mask = GDK_WA_X | GDK_WA_Y | GDK_WA_VISUAL | GDK_WA_COLORMAP;
3522           attributes.x = x;
3523           attributes.y = y;
3524           attributes.width = width;
3525           attributes.height = height;
3526           tree_view->priv->drag_highlight_window = gdk_window_new (gtk_widget_get_root_window (widget),
3527                                                                    &attributes, attributes_mask);
3528           gdk_window_set_user_data (tree_view->priv->drag_highlight_window, GTK_WIDGET (tree_view));
3529
3530           mask = gdk_pixmap_new (tree_view->priv->drag_highlight_window, width, height, 1);
3531           gc = gdk_gc_new (mask);
3532           col.pixel = 1;
3533           gdk_gc_set_foreground (gc, &col);
3534           gdk_draw_rectangle (mask, gc, TRUE, 0, 0, width, height);
3535
3536           /* Draw the 2 arrows as per above */
3537           col.pixel = 0;
3538           gdk_gc_set_foreground (gc, &col);
3539           for (i = 0; i < width; i ++)
3540             {
3541               if (i == (width/2 - 1))
3542                 continue;
3543               gdk_draw_line (mask, gc, i, j, i, height - j);
3544               if (i < (width/2 - 1))
3545                 j++;
3546               else
3547                 j--;
3548             }
3549           g_object_unref (gc);
3550           gdk_window_shape_combine_mask (tree_view->priv->drag_highlight_window,
3551                                          mask, 0, 0);
3552           if (mask) g_object_unref (mask);
3553         }
3554
3555       tree_view->priv->drag_column_window_state = DRAG_COLUMN_WINDOW_STATE_ARROW;
3556       gdk_window_move (tree_view->priv->drag_highlight_window, x, y);
3557     }
3558   else if (arrow_type == DRAG_COLUMN_WINDOW_STATE_ARROW_LEFT ||
3559            arrow_type == DRAG_COLUMN_WINDOW_STATE_ARROW_RIGHT)
3560     {
3561       gint i, j = 1;
3562       GdkGC *gc;
3563       GdkColor col;
3564
3565       width = tree_view->priv->expander_size;
3566
3567       /* Get x, y, width, height of arrow */
3568       width = width/2; /* remember, the arrow only takes half the available width */
3569       gdk_window_get_origin (widget->window, &x, &y);
3570       if (arrow_type == DRAG_COLUMN_WINDOW_STATE_ARROW_RIGHT)
3571         x += widget->allocation.width - width;
3572
3573       if (reorder->left_column)
3574         height = reorder->left_column->button->allocation.height;
3575       else
3576         height = reorder->right_column->button->allocation.height;
3577
3578       y -= tree_view->priv->expander_size;
3579       height += 2*tree_view->priv->expander_size;
3580
3581       /* Create the new window */
3582       if (tree_view->priv->drag_column_window_state != DRAG_COLUMN_WINDOW_STATE_ARROW_LEFT &&
3583           tree_view->priv->drag_column_window_state != DRAG_COLUMN_WINDOW_STATE_ARROW_RIGHT)
3584         {
3585           if (tree_view->priv->drag_highlight_window)
3586             {
3587               gdk_window_set_user_data (tree_view->priv->drag_highlight_window,
3588                                         NULL);
3589               gdk_window_destroy (tree_view->priv->drag_highlight_window);
3590             }
3591
3592           attributes.window_type = GDK_WINDOW_TEMP;
3593           attributes.wclass = GDK_INPUT_OUTPUT;
3594           attributes.visual = gtk_widget_get_visual (GTK_WIDGET (tree_view));
3595           attributes.colormap = gtk_widget_get_colormap (GTK_WIDGET (tree_view));
3596           attributes.event_mask = GDK_VISIBILITY_NOTIFY_MASK | GDK_EXPOSURE_MASK | GDK_POINTER_MOTION_MASK;
3597           attributes_mask = GDK_WA_X | GDK_WA_Y | GDK_WA_VISUAL | GDK_WA_COLORMAP;
3598           attributes.x = x;
3599           attributes.y = y;
3600           attributes.width = width;
3601           attributes.height = height;
3602           tree_view->priv->drag_highlight_window = gdk_window_new (NULL, &attributes, attributes_mask);
3603           gdk_window_set_user_data (tree_view->priv->drag_highlight_window, GTK_WIDGET (tree_view));
3604
3605           mask = gdk_pixmap_new (tree_view->priv->drag_highlight_window, width, height, 1);
3606           gc = gdk_gc_new (mask);
3607           col.pixel = 1;
3608           gdk_gc_set_foreground (gc, &col);
3609           gdk_draw_rectangle (mask, gc, TRUE, 0, 0, width, height);
3610
3611           /* Draw the 2 arrows as per above */
3612           col.pixel = 0;
3613           gdk_gc_set_foreground (gc, &col);
3614           j = tree_view->priv->expander_size;
3615           for (i = 0; i < width; i ++)
3616             {
3617               gint k;
3618               if (arrow_type == DRAG_COLUMN_WINDOW_STATE_ARROW_LEFT)
3619                 k = width - i - 1;
3620               else
3621                 k = i;
3622               gdk_draw_line (mask, gc, k, j, k, height - j);
3623               gdk_draw_line (mask, gc, k, 0, k, tree_view->priv->expander_size - j);
3624               gdk_draw_line (mask, gc, k, height, k, height - tree_view->priv->expander_size + j);
3625               j--;
3626             }
3627           g_object_unref (gc);
3628           gdk_window_shape_combine_mask (tree_view->priv->drag_highlight_window,
3629                                          mask, 0, 0);
3630           if (mask) g_object_unref (mask);
3631         }
3632
3633       tree_view->priv->drag_column_window_state = arrow_type;
3634       gdk_window_move (tree_view->priv->drag_highlight_window, x, y);
3635    }
3636   else
3637     {
3638       g_warning (G_STRLOC"Invalid GtkTreeViewColumnReorder struct");
3639       gdk_window_hide (tree_view->priv->drag_highlight_window);
3640       return;
3641     }
3642
3643   gdk_window_show (tree_view->priv->drag_highlight_window);
3644   gdk_window_raise (tree_view->priv->drag_highlight_window);
3645 }
3646
3647 static gboolean
3648 gtk_tree_view_motion_resize_column (GtkWidget      *widget,
3649                                     GdkEventMotion *event)
3650 {
3651   gint x;
3652   gint new_width;
3653   GtkTreeViewColumn *column;
3654   GtkTreeView *tree_view = GTK_TREE_VIEW (widget);
3655
3656   column = gtk_tree_view_get_column (tree_view, tree_view->priv->drag_pos);
3657
3658   if (event->is_hint || event->window != widget->window)
3659     gtk_widget_get_pointer (widget, &x, NULL);
3660   else
3661     x = event->x;
3662
3663   if (tree_view->priv->hadjustment)
3664     x += tree_view->priv->hadjustment->value;
3665
3666   new_width = gtk_tree_view_new_column_width (tree_view,
3667                                               tree_view->priv->drag_pos, &x);
3668   if (x != tree_view->priv->x_drag &&
3669       (new_width != column->fixed_width))
3670     {
3671       column->use_resized_width = TRUE;
3672       column->resized_width = new_width;
3673       if (column->expand)
3674         column->resized_width -= tree_view->priv->last_extra_space_per_column;
3675       gtk_widget_queue_resize (widget);
3676     }
3677
3678   return FALSE;
3679 }
3680
3681
3682 static void
3683 gtk_tree_view_update_current_reorder (GtkTreeView *tree_view)
3684 {
3685   GtkTreeViewColumnReorder *reorder = NULL;
3686   GList *list;
3687   gint mouse_x;
3688
3689   gdk_window_get_pointer (tree_view->priv->header_window, &mouse_x, NULL, NULL);
3690   for (list = tree_view->priv->column_drag_info; list; list = list->next)
3691     {
3692       reorder = (GtkTreeViewColumnReorder *) list->data;
3693       if (mouse_x >= reorder->left_align && mouse_x < reorder->right_align)
3694         break;
3695       reorder = NULL;
3696     }
3697
3698   /*  if (reorder && reorder == tree_view->priv->cur_reorder)
3699       return;*/
3700
3701   tree_view->priv->cur_reorder = reorder;
3702   gtk_tree_view_motion_draw_column_motion_arrow (tree_view);
3703 }
3704
3705 static void
3706 gtk_tree_view_vertical_autoscroll (GtkTreeView *tree_view)
3707 {
3708   GdkRectangle visible_rect;
3709   gint y;
3710   gint offset;
3711   gfloat value;
3712
3713   gdk_window_get_pointer (tree_view->priv->bin_window, NULL, &y, NULL);
3714   y += tree_view->priv->dy;
3715
3716   gtk_tree_view_get_visible_rect (tree_view, &visible_rect);
3717
3718   /* see if we are near the edge. */
3719   offset = y - (visible_rect.y + 2 * SCROLL_EDGE_SIZE);
3720   if (offset > 0)
3721     {
3722       offset = y - (visible_rect.y + visible_rect.height - 2 * SCROLL_EDGE_SIZE);
3723       if (offset < 0)
3724         return;
3725     }
3726
3727   value = CLAMP (tree_view->priv->vadjustment->value + offset, 0.0,
3728                  tree_view->priv->vadjustment->upper - tree_view->priv->vadjustment->page_size);
3729   gtk_adjustment_set_value (tree_view->priv->vadjustment, value);
3730 }
3731
3732 static gboolean
3733 gtk_tree_view_horizontal_autoscroll (GtkTreeView *tree_view)
3734 {
3735   GdkRectangle visible_rect;
3736   gint x;
3737   gint offset;
3738   gfloat value;
3739
3740   gdk_window_get_pointer (tree_view->priv->bin_window, &x, NULL, NULL);
3741
3742   gtk_tree_view_get_visible_rect (tree_view, &visible_rect);
3743
3744   /* See if we are near the edge. */
3745   offset = x - (visible_rect.x + SCROLL_EDGE_SIZE);
3746   if (offset > 0)
3747     {
3748       offset = x - (visible_rect.x + visible_rect.width - SCROLL_EDGE_SIZE);
3749       if (offset < 0)
3750         return TRUE;
3751     }
3752   offset = offset/3;
3753
3754   value = CLAMP (tree_view->priv->hadjustment->value + offset,
3755                  0.0, tree_view->priv->hadjustment->upper - tree_view->priv->hadjustment->page_size);
3756   gtk_adjustment_set_value (tree_view->priv->hadjustment, value);
3757
3758   return TRUE;
3759
3760 }
3761
3762 static gboolean
3763 gtk_tree_view_motion_drag_column (GtkWidget      *widget,
3764                                   GdkEventMotion *event)
3765 {
3766   GtkTreeView *tree_view = (GtkTreeView *) widget;
3767   GtkTreeViewColumn *column = tree_view->priv->drag_column;
3768   gint x, y;
3769
3770   /* Sanity Check */
3771   if ((column == NULL) ||
3772       (event->window != tree_view->priv->drag_window))
3773     return FALSE;
3774
3775   /* Handle moving the header */
3776   gdk_window_get_position (tree_view->priv->drag_window, &x, &y);
3777   x = CLAMP (x + (gint)event->x - column->drag_x, 0,
3778              MAX (tree_view->priv->width, GTK_WIDGET (tree_view)->allocation.width) - column->button->allocation.width);
3779   gdk_window_move (tree_view->priv->drag_window, x, y);
3780
3781   /* autoscroll, if needed */
3782   gtk_tree_view_horizontal_autoscroll (tree_view);
3783   /* Update the current reorder position and arrow; */
3784   gtk_tree_view_update_current_reorder (tree_view);
3785
3786   return TRUE;
3787 }
3788
3789 static void
3790 gtk_tree_view_stop_rubber_band (GtkTreeView *tree_view)
3791 {
3792   remove_scroll_timeout (tree_view);
3793   gtk_grab_remove (GTK_WIDGET (tree_view));
3794
3795   if (tree_view->priv->rubber_band_status == RUBBER_BAND_ACTIVE)
3796     {
3797       GtkTreePath *tmp_path;
3798
3799       gtk_widget_queue_draw (GTK_WIDGET (tree_view));
3800
3801       /* The anchor path should be set to the start path */
3802       tmp_path = _gtk_tree_view_find_path (tree_view,
3803                                            tree_view->priv->rubber_band_start_tree,
3804                                            tree_view->priv->rubber_band_start_node);
3805
3806       if (tree_view->priv->anchor)
3807         gtk_tree_row_reference_free (tree_view->priv->anchor);
3808
3809       tree_view->priv->anchor =
3810         gtk_tree_row_reference_new_proxy (G_OBJECT (tree_view),
3811                                           tree_view->priv->model,
3812                                           tmp_path);
3813
3814       gtk_tree_path_free (tmp_path);
3815
3816       /* ... and the cursor to the end path */
3817       tmp_path = _gtk_tree_view_find_path (tree_view,
3818                                            tree_view->priv->rubber_band_end_tree,
3819                                            tree_view->priv->rubber_band_end_node);
3820       gtk_tree_view_real_set_cursor (GTK_TREE_VIEW (tree_view), tmp_path, FALSE, FALSE);
3821       gtk_tree_path_free (tmp_path);
3822
3823       _gtk_tree_selection_emit_changed (tree_view->priv->selection);
3824     }
3825
3826   /* Clear status variables */
3827   tree_view->priv->rubber_band_status = RUBBER_BAND_OFF;
3828   tree_view->priv->rubber_band_shift = 0;
3829   tree_view->priv->rubber_band_ctrl = 0;
3830
3831   tree_view->priv->rubber_band_start_node = NULL;
3832   tree_view->priv->rubber_band_start_tree = NULL;
3833   tree_view->priv->rubber_band_end_node = NULL;
3834   tree_view->priv->rubber_band_end_tree = NULL;
3835 }
3836
3837 static void
3838 gtk_tree_view_update_rubber_band_selection_range (GtkTreeView *tree_view,
3839                                                  GtkRBTree   *start_tree,
3840                                                  GtkRBNode   *start_node,
3841                                                  GtkRBTree   *end_tree,
3842                                                  GtkRBNode   *end_node,
3843                                                  gboolean     select,
3844                                                  gboolean     skip_start,
3845                                                  gboolean     skip_end)
3846 {
3847   if (start_node == end_node)
3848     return;
3849
3850   /* We skip the first node and jump inside the loop */
3851   if (skip_start)
3852     goto skip_first;
3853
3854   do
3855     {
3856       /* Small optimization by assuming insensitive nodes are never
3857        * selected.
3858        */
3859       if (!GTK_RBNODE_FLAG_SET (start_node, GTK_RBNODE_IS_SELECTED))
3860         {
3861           GtkTreePath *path;
3862           gboolean selectable;
3863
3864           path = _gtk_tree_view_find_path (tree_view, start_tree, start_node);
3865           selectable = _gtk_tree_selection_row_is_selectable (tree_view->priv->selection, start_node, path);
3866           gtk_tree_path_free (path);
3867
3868           if (!selectable)
3869             goto node_not_selectable;
3870         }
3871
3872       if (select)
3873         {
3874           if (tree_view->priv->rubber_band_shift)
3875             GTK_RBNODE_SET_FLAG (start_node, GTK_RBNODE_IS_SELECTED);
3876           else if (tree_view->priv->rubber_band_ctrl)
3877             {
3878               /* Toggle the selection state */
3879               if (GTK_RBNODE_FLAG_SET (start_node, GTK_RBNODE_IS_SELECTED))
3880                 GTK_RBNODE_UNSET_FLAG (start_node, GTK_RBNODE_IS_SELECTED);
3881               else
3882                 GTK_RBNODE_SET_FLAG (start_node, GTK_RBNODE_IS_SELECTED);
3883             }
3884           else
3885             GTK_RBNODE_SET_FLAG (start_node, GTK_RBNODE_IS_SELECTED);
3886         }
3887       else
3888         {
3889           /* Mirror the above */
3890           if (tree_view->priv->rubber_band_shift)
3891             GTK_RBNODE_UNSET_FLAG (start_node, GTK_RBNODE_IS_SELECTED);
3892           else if (tree_view->priv->rubber_band_ctrl)
3893             {
3894               /* Toggle the selection state */
3895               if (GTK_RBNODE_FLAG_SET (start_node, GTK_RBNODE_IS_SELECTED))
3896                 GTK_RBNODE_UNSET_FLAG (start_node, GTK_RBNODE_IS_SELECTED);
3897               else
3898                 GTK_RBNODE_SET_FLAG (start_node, GTK_RBNODE_IS_SELECTED);
3899             }
3900           else
3901             GTK_RBNODE_UNSET_FLAG (start_node, GTK_RBNODE_IS_SELECTED);
3902         }
3903
3904       _gtk_tree_view_queue_draw_node (tree_view, start_tree, start_node, NULL);
3905
3906 node_not_selectable:
3907       if (start_node == end_node)
3908         break;
3909
3910 skip_first:
3911
3912       if (start_node->children)
3913         {
3914           start_tree = start_node->children;
3915           start_node = start_tree->root;
3916           while (start_node->left != start_tree->nil)
3917             start_node = start_node->left;
3918         }
3919       else
3920         {
3921           _gtk_rbtree_next_full (start_tree, start_node, &start_tree, &start_node);
3922
3923           if (!start_tree)
3924             /* Ran out of tree */
3925             break;
3926         }
3927
3928       if (skip_end && start_node == end_node)
3929         break;
3930     }
3931   while (TRUE);
3932 }
3933
3934 static void
3935 gtk_tree_view_update_rubber_band_selection (GtkTreeView *tree_view)
3936 {
3937   GtkRBTree *start_tree, *end_tree;
3938   GtkRBNode *start_node, *end_node;
3939
3940   _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);
3941   _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);
3942
3943   /* Handle the start area first */
3944   if (!tree_view->priv->rubber_band_start_node)
3945     {
3946       gtk_tree_view_update_rubber_band_selection_range (tree_view,
3947                                                        start_tree,
3948                                                        start_node,
3949                                                        end_tree,
3950                                                        end_node,
3951                                                        TRUE,
3952                                                        FALSE,
3953                                                        FALSE);
3954     }
3955   else if (_gtk_rbtree_node_find_offset (start_tree, start_node) <
3956            _gtk_rbtree_node_find_offset (tree_view->priv->rubber_band_start_tree, tree_view->priv->rubber_band_start_node))
3957     {
3958       /* New node is above the old one; selection became bigger */
3959       gtk_tree_view_update_rubber_band_selection_range (tree_view,
3960                                                        start_tree,
3961                                                        start_node,
3962                                                        tree_view->priv->rubber_band_start_tree,
3963                                                        tree_view->priv->rubber_band_start_node,
3964                                                        TRUE,
3965                                                        FALSE,
3966                                                        TRUE);
3967     }
3968   else if (_gtk_rbtree_node_find_offset (start_tree, start_node) >
3969            _gtk_rbtree_node_find_offset (tree_view->priv->rubber_band_start_tree, tree_view->priv->rubber_band_start_node))
3970     {
3971       /* New node is below the old one; selection became smaller */
3972       gtk_tree_view_update_rubber_band_selection_range (tree_view,
3973                                                        tree_view->priv->rubber_band_start_tree,
3974                                                        tree_view->priv->rubber_band_start_node,
3975                                                        start_tree,
3976                                                        start_node,
3977                                                        FALSE,
3978                                                        FALSE,
3979                                                        TRUE);
3980     }
3981
3982   tree_view->priv->rubber_band_start_tree = start_tree;
3983   tree_view->priv->rubber_band_start_node = start_node;
3984
3985   /* Next, handle the end area */
3986   if (!tree_view->priv->rubber_band_end_node)
3987     {
3988       /* In the event this happens, start_node was also NULL; this case is
3989        * handled above.
3990        */
3991     }
3992   else if (!end_node)
3993     {
3994       /* Find the last node in the tree */
3995       _gtk_rbtree_find_offset (tree_view->priv->tree, tree_view->priv->height - 1,
3996                                &end_tree, &end_node);
3997
3998       /* Selection reached end of the tree */
3999       gtk_tree_view_update_rubber_band_selection_range (tree_view,
4000                                                        tree_view->priv->rubber_band_end_tree,
4001                                                        tree_view->priv->rubber_band_end_node,
4002                                                        end_tree,
4003                                                        end_node,
4004                                                        TRUE,
4005                                                        TRUE,
4006                                                        FALSE);
4007     }
4008   else if (_gtk_rbtree_node_find_offset (end_tree, end_node) >
4009            _gtk_rbtree_node_find_offset (tree_view->priv->rubber_band_end_tree, tree_view->priv->rubber_band_end_node))
4010     {
4011       /* New node is below the old one; selection became bigger */
4012       gtk_tree_view_update_rubber_band_selection_range (tree_view,
4013                                                        tree_view->priv->rubber_band_end_tree,
4014                                                        tree_view->priv->rubber_band_end_node,
4015                                                        end_tree,
4016                                                        end_node,
4017                                                        TRUE,
4018                                                        TRUE,
4019                                                        FALSE);
4020     }
4021   else if (_gtk_rbtree_node_find_offset (end_tree, end_node) <
4022            _gtk_rbtree_node_find_offset (tree_view->priv->rubber_band_end_tree, tree_view->priv->rubber_band_end_node))
4023     {
4024       /* New node is above the old one; selection became smaller */
4025       gtk_tree_view_update_rubber_band_selection_range (tree_view,
4026                                                        end_tree,
4027                                                        end_node,
4028                                                        tree_view->priv->rubber_band_end_tree,
4029                                                        tree_view->priv->rubber_band_end_node,
4030                                                        FALSE,
4031                                                        TRUE,
4032                                                        FALSE);
4033     }
4034
4035   tree_view->priv->rubber_band_end_tree = end_tree;
4036   tree_view->priv->rubber_band_end_node = end_node;
4037 }
4038
4039 static void
4040 gtk_tree_view_update_rubber_band (GtkTreeView *tree_view)
4041 {
4042   gint x, y;
4043   GdkRectangle old_area;
4044   GdkRectangle new_area;
4045   GdkRectangle common;
4046   GdkRegion *invalid_region;
4047
4048   old_area.x = MIN (tree_view->priv->press_start_x, tree_view->priv->rubber_band_x);
4049   old_area.y = MIN (tree_view->priv->press_start_y, tree_view->priv->rubber_band_y) - tree_view->priv->dy;
4050   old_area.width = ABS (tree_view->priv->rubber_band_x - tree_view->priv->press_start_x) + 1;
4051   old_area.height = ABS (tree_view->priv->rubber_band_y - tree_view->priv->press_start_y) + 1;
4052
4053   gdk_window_get_pointer (tree_view->priv->bin_window, &x, &y, NULL);
4054
4055   x = MAX (x, 0);
4056   y = MAX (y, 0) + tree_view->priv->dy;
4057
4058   new_area.x = MIN (tree_view->priv->press_start_x, x);
4059   new_area.y = MIN (tree_view->priv->press_start_y, y) - tree_view->priv->dy;
4060   new_area.width = ABS (x - tree_view->priv->press_start_x) + 1;
4061   new_area.height = ABS (y - tree_view->priv->press_start_y) + 1;
4062
4063   invalid_region = gdk_region_rectangle (&old_area);
4064   gdk_region_union_with_rect (invalid_region, &new_area);
4065
4066   gdk_rectangle_intersect (&old_area, &new_area, &common);
4067   if (common.width > 2 && common.height > 2)
4068     {
4069       GdkRegion *common_region;
4070
4071       /* make sure the border is invalidated */
4072       common.x += 1;
4073       common.y += 1;
4074       common.width -= 2;
4075       common.height -= 2;
4076
4077       common_region = gdk_region_rectangle (&common);
4078
4079       gdk_region_subtract (invalid_region, common_region);
4080       gdk_region_destroy (common_region);
4081     }
4082
4083   gdk_window_invalidate_region (tree_view->priv->bin_window, invalid_region, TRUE);
4084
4085   gdk_region_destroy (invalid_region);
4086
4087   tree_view->priv->rubber_band_x = x;
4088   tree_view->priv->rubber_band_y = y;
4089
4090   gtk_tree_view_update_rubber_band_selection (tree_view);
4091 }
4092
4093 static void
4094 gtk_tree_view_paint_rubber_band (GtkTreeView  *tree_view,
4095                                 GdkRectangle *area)
4096 {
4097   cairo_t *cr;
4098   GdkRectangle rect;
4099   GdkRectangle rubber_rect;
4100
4101   rubber_rect.x = MIN (tree_view->priv->press_start_x, tree_view->priv->rubber_band_x);
4102   rubber_rect.y = MIN (tree_view->priv->press_start_y, tree_view->priv->rubber_band_y) - tree_view->priv->dy;
4103   rubber_rect.width = ABS (tree_view->priv->press_start_x - tree_view->priv->rubber_band_x) + 1;
4104   rubber_rect.height = ABS (tree_view->priv->press_start_y - tree_view->priv->rubber_band_y) + 1;
4105
4106   if (!gdk_rectangle_intersect (&rubber_rect, area, &rect))
4107     return;
4108
4109   cr = gdk_cairo_create (tree_view->priv->bin_window);
4110   cairo_set_line_width (cr, 1.0);
4111
4112   cairo_set_source_rgba (cr,
4113                          GTK_WIDGET (tree_view)->style->fg[GTK_STATE_NORMAL].red / 65535.,
4114                          GTK_WIDGET (tree_view)->style->fg[GTK_STATE_NORMAL].green / 65535.,
4115                          GTK_WIDGET (tree_view)->style->fg[GTK_STATE_NORMAL].blue / 65535.,
4116                          .25);
4117
4118   gdk_cairo_rectangle (cr, &rect);
4119   cairo_clip (cr);
4120   cairo_paint (cr);
4121
4122   cairo_set_source_rgb (cr,
4123                         GTK_WIDGET (tree_view)->style->fg[GTK_STATE_NORMAL].red / 65535.,
4124                         GTK_WIDGET (tree_view)->style->fg[GTK_STATE_NORMAL].green / 65535.,
4125                         GTK_WIDGET (tree_view)->style->fg[GTK_STATE_NORMAL].blue / 65535.);
4126
4127   cairo_rectangle (cr,
4128                    rubber_rect.x + 0.5, rubber_rect.y + 0.5,
4129                    rubber_rect.width - 1, rubber_rect.height - 1);
4130   cairo_stroke (cr);
4131
4132   cairo_destroy (cr);
4133 }
4134
4135 static gboolean
4136 gtk_tree_view_motion_bin_window (GtkWidget      *widget,
4137                                  GdkEventMotion *event)
4138 {
4139   GtkTreeView *tree_view;
4140   GtkRBTree *tree;
4141   GtkRBNode *node;
4142   gint new_y;
4143
4144   tree_view = (GtkTreeView *) widget;
4145
4146   if (tree_view->priv->tree == NULL)
4147     return FALSE;
4148
4149   if (tree_view->priv->rubber_band_status == RUBBER_BAND_MAYBE_START)
4150     {
4151       gtk_grab_add (GTK_WIDGET (tree_view));
4152       gtk_tree_view_update_rubber_band (tree_view);
4153
4154       tree_view->priv->rubber_band_status = RUBBER_BAND_ACTIVE;
4155     }
4156   else if (tree_view->priv->rubber_band_status == RUBBER_BAND_ACTIVE)
4157     {
4158       gtk_tree_view_update_rubber_band (tree_view);
4159
4160       add_scroll_timeout (tree_view);
4161     }
4162
4163   /* only check for an initiated drag when a button is pressed */
4164   if (tree_view->priv->pressed_button >= 0
4165       && !tree_view->priv->rubber_band_status)
4166     gtk_tree_view_maybe_begin_dragging_row (tree_view, event);
4167
4168   new_y = TREE_WINDOW_Y_TO_RBTREE_Y(tree_view, event->y);
4169   if (new_y < 0)
4170     new_y = 0;
4171
4172   _gtk_rbtree_find_offset (tree_view->priv->tree, new_y, &tree, &node);
4173
4174   /* If we are currently pressing down a button, we don't want to prelight anything else. */
4175   if ((tree_view->priv->button_pressed_node != NULL) &&
4176       (tree_view->priv->button_pressed_node != node))
4177     node = NULL;
4178
4179   tree_view->priv->event_last_x = event->x;
4180   tree_view->priv->event_last_y = event->y;
4181
4182   prelight_or_select (tree_view, tree, node, event->x, event->y);
4183
4184   return TRUE;
4185 }
4186
4187 static gboolean
4188 gtk_tree_view_motion (GtkWidget      *widget,
4189                       GdkEventMotion *event)
4190 {
4191   GtkTreeView *tree_view;
4192
4193   tree_view = (GtkTreeView *) widget;
4194
4195   /* Resizing a column */
4196   if (GTK_TREE_VIEW_FLAG_SET (tree_view, GTK_TREE_VIEW_IN_COLUMN_RESIZE))
4197     return gtk_tree_view_motion_resize_column (widget, event);
4198
4199   /* Drag column */
4200   if (GTK_TREE_VIEW_FLAG_SET (tree_view, GTK_TREE_VIEW_IN_COLUMN_DRAG))
4201     return gtk_tree_view_motion_drag_column (widget, event);
4202
4203   /* Sanity check it */
4204   if (event->window == tree_view->priv->bin_window)
4205     return gtk_tree_view_motion_bin_window (widget, event);
4206
4207   return FALSE;
4208 }
4209
4210 /* Invalidate the focus rectangle near the edge of the bin_window; used when
4211  * the tree is empty.
4212  */
4213 static void
4214 invalidate_empty_focus (GtkTreeView *tree_view)
4215 {
4216   GdkRectangle area;
4217
4218   if (!gtk_widget_has_focus (GTK_WIDGET (tree_view)))
4219     return;
4220
4221   area.x = 0;
4222   area.y = 0;
4223   gdk_drawable_get_size (tree_view->priv->bin_window, &area.width, &area.height);
4224   gdk_window_invalidate_rect (tree_view->priv->bin_window, &area, FALSE);
4225 }
4226
4227 /* Draws a focus rectangle near the edge of the bin_window; used when the tree
4228  * is empty.
4229  */
4230 static void
4231 draw_empty_focus (GtkTreeView *tree_view, GdkRectangle *clip_area)
4232 {
4233   gint w, h;
4234
4235   if (!gtk_widget_has_focus (GTK_WIDGET (tree_view)))
4236     return;
4237
4238   gdk_drawable_get_size (tree_view->priv->bin_window, &w, &h);
4239
4240   w -= 2;
4241   h -= 2;
4242
4243   if (w > 0 && h > 0)
4244     gtk_paint_focus (GTK_WIDGET (tree_view)->style,
4245                      tree_view->priv->bin_window,
4246                      GTK_WIDGET_STATE (tree_view),
4247                      clip_area,
4248                      GTK_WIDGET (tree_view),
4249                      NULL,
4250                      1, 1, w, h);
4251 }
4252
4253 static void
4254 gtk_tree_view_draw_grid_lines (GtkTreeView    *tree_view,
4255                                GdkEventExpose *event,
4256                                gint            n_visible_columns)
4257 {
4258   GList *list = tree_view->priv->columns;
4259   gint i = 0;
4260   gint current_x = 0;
4261
4262   if (tree_view->priv->grid_lines != GTK_TREE_VIEW_GRID_LINES_VERTICAL
4263       && tree_view->priv->grid_lines != GTK_TREE_VIEW_GRID_LINES_BOTH)
4264     return;
4265
4266   /* Only draw the lines for visible rows and columns */
4267   for (list = tree_view->priv->columns; list; list = list->next, i++)
4268     {
4269       GtkTreeViewColumn *column = list->data;
4270
4271       /* We don't want a line for the last column */
4272       if (i == n_visible_columns - 1)
4273         break;
4274
4275       if (! column->visible)
4276         continue;
4277
4278       current_x += column->width;
4279
4280       gdk_draw_line (event->window,
4281                      tree_view->priv->grid_line_gc,
4282                      current_x - 1, 0,
4283                      current_x - 1, tree_view->priv->height);
4284     }
4285 }
4286
4287 /* Warning: Very scary function.
4288  * Modify at your own risk
4289  *
4290  * KEEP IN SYNC WITH gtk_tree_view_create_row_drag_icon()!
4291  * FIXME: It's not...
4292  */
4293 static gboolean
4294 gtk_tree_view_bin_expose (GtkWidget      *widget,
4295                           GdkEventExpose *event)
4296 {
4297   GtkTreeView *tree_view = GTK_TREE_VIEW (widget);
4298   GtkTreePath *path;
4299   GtkRBTree *tree;
4300   GList *list;
4301   GtkRBNode *node;
4302   GtkRBNode *cursor = NULL;
4303   GtkRBTree *cursor_tree = NULL;
4304   GtkRBNode *drag_highlight = NULL;
4305   GtkRBTree *drag_highlight_tree = NULL;
4306   GtkTreeIter iter;
4307   gint new_y;
4308   gint y_offset, cell_offset;
4309   gint max_height;
4310   gint depth;
4311   GdkRectangle background_area;
4312   GdkRectangle cell_area;
4313   guint flags;
4314   gint highlight_x;
4315   gint expander_cell_width;
4316   gint bin_window_width;
4317   gint bin_window_height;
4318   GtkTreePath *cursor_path;
4319   GtkTreePath *drag_dest_path;
4320   GList *first_column, *last_column;
4321   gint vertical_separator;
4322   gint horizontal_separator;
4323   gint focus_line_width;
4324   gboolean allow_rules;
4325   gboolean has_special_cell;
4326   gboolean rtl;
4327   gint n_visible_columns;
4328   gint pointer_x, pointer_y;
4329   gint grid_line_width;
4330   gboolean got_pointer = FALSE;
4331   gboolean row_ending_details;
4332   gboolean draw_vgrid_lines, draw_hgrid_lines;
4333
4334   rtl = (gtk_widget_get_direction (widget) == GTK_TEXT_DIR_RTL);
4335
4336   gtk_widget_style_get (widget,
4337                         "horizontal-separator", &horizontal_separator,
4338                         "vertical-separator", &vertical_separator,
4339                         "allow-rules", &allow_rules,
4340                         "focus-line-width", &focus_line_width,
4341                         "row-ending-details", &row_ending_details,
4342                         NULL);
4343
4344   if (tree_view->priv->tree == NULL)
4345     {
4346       draw_empty_focus (tree_view, &event->area);
4347       return TRUE;
4348     }
4349
4350   /* clip event->area to the visible area */
4351   if (event->area.height < 0)
4352     return TRUE;
4353
4354   validate_visible_area (tree_view);
4355
4356   new_y = TREE_WINDOW_Y_TO_RBTREE_Y (tree_view, event->area.y);
4357
4358   if (new_y < 0)
4359     new_y = 0;
4360   y_offset = -_gtk_rbtree_find_offset (tree_view->priv->tree, new_y, &tree, &node);
4361   gdk_drawable_get_size (tree_view->priv->bin_window,
4362                          &bin_window_width, &bin_window_height);
4363
4364   if (tree_view->priv->height < bin_window_height)
4365     {
4366       gtk_paint_flat_box (widget->style,
4367                           event->window,
4368                           widget->state,
4369                           GTK_SHADOW_NONE,
4370                           &event->area,
4371                           widget,
4372                           "cell_even",
4373                           0, tree_view->priv->height,
4374                           bin_window_width,
4375                           bin_window_height - tree_view->priv->height);
4376     }
4377
4378   if (node == NULL)
4379     return TRUE;
4380
4381   /* find the path for the node */
4382   path = _gtk_tree_view_find_path ((GtkTreeView *)widget,
4383                                    tree,
4384                                    node);
4385   gtk_tree_model_get_iter (tree_view->priv->model,
4386                            &iter,
4387                            path);
4388   depth = gtk_tree_path_get_depth (path);
4389   gtk_tree_path_free (path);
4390
4391   cursor_path = NULL;
4392   drag_dest_path = NULL;
4393
4394   if (tree_view->priv->cursor)
4395     cursor_path = gtk_tree_row_reference_get_path (tree_view->priv->cursor);
4396
4397   if (cursor_path)
4398     _gtk_tree_view_find_node (tree_view, cursor_path,
4399                               &cursor_tree, &cursor);
4400
4401   if (tree_view->priv->drag_dest_row)
4402     drag_dest_path = gtk_tree_row_reference_get_path (tree_view->priv->drag_dest_row);
4403
4404   if (drag_dest_path)
4405     _gtk_tree_view_find_node (tree_view, drag_dest_path,
4406                               &drag_highlight_tree, &drag_highlight);
4407
4408   draw_vgrid_lines =
4409     tree_view->priv->grid_lines == GTK_TREE_VIEW_GRID_LINES_VERTICAL
4410     || tree_view->priv->grid_lines == GTK_TREE_VIEW_GRID_LINES_BOTH;
4411   draw_hgrid_lines =
4412     tree_view->priv->grid_lines == GTK_TREE_VIEW_GRID_LINES_HORIZONTAL
4413     || tree_view->priv->grid_lines == GTK_TREE_VIEW_GRID_LINES_BOTH;
4414
4415   if (draw_vgrid_lines || draw_hgrid_lines)
4416     gtk_widget_style_get (widget, "grid-line-width", &grid_line_width, NULL);
4417
4418   n_visible_columns = 0;
4419   for (list = tree_view->priv->columns; list; list = list->next)
4420     {
4421       if (! GTK_TREE_VIEW_COLUMN (list->data)->visible)
4422         continue;
4423       n_visible_columns ++;
4424     }
4425
4426   /* Find the last column */
4427   for (last_column = g_list_last (tree_view->priv->columns);
4428        last_column && !(GTK_TREE_VIEW_COLUMN (last_column->data)->visible);
4429        last_column = last_column->prev)
4430     ;
4431
4432   /* and the first */
4433   for (first_column = g_list_first (tree_view->priv->columns);
4434        first_column && !(GTK_TREE_VIEW_COLUMN (first_column->data)->visible);
4435        first_column = first_column->next)
4436     ;
4437
4438   /* Actually process the expose event.  To do this, we want to
4439    * start at the first node of the event, and walk the tree in
4440    * order, drawing each successive node.
4441    */
4442
4443   do
4444     {
4445       gboolean parity;
4446       gboolean is_separator = FALSE;
4447       gboolean is_first = FALSE;
4448       gboolean is_last = FALSE;
4449
4450       is_separator = row_is_separator (tree_view, &iter, NULL);
4451
4452       max_height = ROW_HEIGHT (tree_view, BACKGROUND_HEIGHT (node));
4453
4454       cell_offset = 0;
4455       highlight_x = 0; /* should match x coord of first cell */
4456       expander_cell_width = 0;
4457
4458       background_area.y = y_offset + event->area.y;
4459       background_area.height = max_height;
4460
4461       flags = 0;
4462
4463       if (GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_PRELIT))
4464         flags |= GTK_CELL_RENDERER_PRELIT;
4465
4466       if (GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_SELECTED))
4467         flags |= GTK_CELL_RENDERER_SELECTED;
4468
4469       parity = _gtk_rbtree_node_find_parity (tree, node);
4470
4471       /* we *need* to set cell data on all cells before the call
4472        * to _has_special_cell, else _has_special_cell() does not
4473        * return a correct value.
4474        */
4475       for (list = (rtl ? g_list_last (tree_view->priv->columns) : g_list_first (tree_view->priv->columns));
4476            list;
4477            list = (rtl ? list->prev : list->next))
4478         {
4479           GtkTreeViewColumn *column = list->data;
4480           gtk_tree_view_column_cell_set_cell_data (column,
4481                                                    tree_view->priv->model,
4482                                                    &iter,
4483                                                    GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_PARENT),
4484                                                    node->children?TRUE:FALSE);
4485         }
4486
4487       has_special_cell = gtk_tree_view_has_special_cell (tree_view);
4488
4489       for (list = (rtl ? g_list_last (tree_view->priv->columns) : g_list_first (tree_view->priv->columns));
4490            list;
4491            list = (rtl ? list->prev : list->next))
4492         {
4493           GtkTreeViewColumn *column = list->data;
4494           const gchar *detail = NULL;
4495           GtkStateType state;
4496
4497           if (!column->visible)
4498             continue;
4499
4500           if (cell_offset > event->area.x + event->area.width ||
4501               cell_offset + column->width < event->area.x)
4502             {
4503               cell_offset += column->width;
4504               continue;
4505             }
4506
4507           if (column->show_sort_indicator)
4508             flags |= GTK_CELL_RENDERER_SORTED;
4509           else
4510             flags &= ~GTK_CELL_RENDERER_SORTED;
4511
4512           if (cursor == node)
4513             flags |= GTK_CELL_RENDERER_FOCUSED;
4514           else
4515             flags &= ~GTK_CELL_RENDERER_FOCUSED;
4516
4517           background_area.x = cell_offset;
4518           background_area.width = column->width;
4519
4520           cell_area = background_area;
4521           cell_area.y += vertical_separator / 2;
4522           cell_area.x += horizontal_separator / 2;
4523           cell_area.height -= vertical_separator;
4524           cell_area.width -= horizontal_separator;
4525
4526           if (draw_vgrid_lines)
4527             {
4528               if (list == first_column)
4529                 {
4530                   cell_area.width -= grid_line_width / 2;
4531                 }
4532               else if (list == last_column)
4533                 {
4534                   cell_area.x += grid_line_width / 2;
4535                   cell_area.width -= grid_line_width / 2;
4536                 }
4537               else
4538                 {
4539                   cell_area.x += grid_line_width / 2;
4540                   cell_area.width -= grid_line_width;
4541                 }
4542             }
4543
4544           if (draw_hgrid_lines)
4545             {
4546               cell_area.y += grid_line_width / 2;
4547               cell_area.height -= grid_line_width;
4548             }
4549
4550           if (gdk_region_rect_in (event->region, &background_area) == GDK_OVERLAP_RECTANGLE_OUT)
4551             {
4552               cell_offset += column->width;
4553               continue;
4554             }
4555
4556           gtk_tree_view_column_cell_set_cell_data (column,
4557                                                    tree_view->priv->model,
4558                                                    &iter,
4559                                                    GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_PARENT),
4560                                                    node->children?TRUE:FALSE);
4561
4562           /* Select the detail for drawing the cell.  relevant
4563            * factors are parity, sortedness, and whether to
4564            * display rules.
4565            */
4566           if (allow_rules && tree_view->priv->has_rules)
4567             {
4568               if ((flags & GTK_CELL_RENDERER_SORTED) &&
4569                   n_visible_columns >= 3)
4570                 {
4571                   if (parity)
4572                     detail = "cell_odd_ruled_sorted";
4573                   else
4574                     detail = "cell_even_ruled_sorted";
4575                 }
4576               else
4577                 {
4578                   if (parity)
4579                     detail = "cell_odd_ruled";
4580                   else
4581                     detail = "cell_even_ruled";
4582                 }
4583             }
4584           else
4585             {
4586               if ((flags & GTK_CELL_RENDERER_SORTED) &&
4587                   n_visible_columns >= 3)
4588                 {
4589                   if (parity)
4590                     detail = "cell_odd_sorted";
4591                   else
4592                     detail = "cell_even_sorted";
4593                 }
4594               else
4595                 {
4596                   if (parity)
4597                     detail = "cell_odd";
4598                   else
4599                     detail = "cell_even";
4600                 }
4601             }
4602
4603           g_assert (detail);
4604
4605           if (widget->state == GTK_STATE_INSENSITIVE)
4606             state = GTK_STATE_INSENSITIVE;
4607           else if (flags & GTK_CELL_RENDERER_SELECTED)
4608             state = GTK_STATE_SELECTED;
4609           else
4610             state = GTK_STATE_NORMAL;
4611
4612           /* Draw background */
4613           if (row_ending_details)
4614             {
4615               char new_detail[128];
4616
4617               is_first = (rtl ? !list->next : !list->prev);
4618               is_last = (rtl ? !list->prev : !list->next);
4619
4620               /* (I don't like the snprintfs either, but couldn't find a
4621                * less messy way).
4622                */
4623               if (is_first && is_last)
4624                 g_snprintf (new_detail, 127, "%s", detail);
4625               else if (is_first)
4626                 g_snprintf (new_detail, 127, "%s_start", detail);
4627               else if (is_last)
4628                 g_snprintf (new_detail, 127, "%s_end", detail);
4629               else
4630                 g_snprintf (new_detail, 128, "%s_middle", detail);
4631
4632               gtk_paint_flat_box (widget->style,
4633                                   event->window,
4634                                   state,
4635                                   GTK_SHADOW_NONE,
4636                                   &event->area,
4637                                   widget,
4638                                   new_detail,
4639                                   background_area.x,
4640                                   background_area.y,
4641                                   background_area.width,
4642                                   background_area.height);
4643             }
4644           else
4645             {
4646               gtk_paint_flat_box (widget->style,
4647                                   event->window,
4648                                   state,
4649                                   GTK_SHADOW_NONE,
4650                                   &event->area,
4651                                   widget,
4652                                   detail,
4653                                   background_area.x,
4654                                   background_area.y,
4655                                   background_area.width,
4656                                   background_area.height);
4657             }
4658
4659           if (draw_hgrid_lines)
4660             {
4661               if (background_area.y > 0)
4662                 gdk_draw_line (event->window,
4663                                tree_view->priv->grid_line_gc,
4664                                background_area.x, background_area.y,
4665                                background_area.x + background_area.width,
4666                                background_area.y);
4667
4668               if (y_offset + max_height >= event->area.height)
4669                 gdk_draw_line (event->window,
4670                                tree_view->priv->grid_line_gc,
4671                                background_area.x, background_area.y + max_height,
4672                                background_area.x + background_area.width,
4673                                background_area.y + max_height);
4674             }
4675
4676           if (gtk_tree_view_is_expander_column (tree_view, column))
4677             {
4678               if (!rtl)
4679                 cell_area.x += (depth - 1) * tree_view->priv->level_indentation;
4680               cell_area.width -= (depth - 1) * tree_view->priv->level_indentation;
4681
4682               if (TREE_VIEW_DRAW_EXPANDERS(tree_view))
4683                 {
4684                   if (!rtl)
4685                     cell_area.x += depth * tree_view->priv->expander_size;
4686                   cell_area.width -= depth * tree_view->priv->expander_size;
4687                 }
4688
4689               /* If we have an expander column, the highlight underline
4690                * starts with that column, so that it indicates which
4691                * level of the tree we're dropping at.
4692                */
4693               highlight_x = cell_area.x;
4694               expander_cell_width = cell_area.width;
4695
4696               if (is_separator)
4697                 gtk_paint_hline (widget->style,
4698                                  event->window,
4699                                  state,
4700                                  &cell_area,
4701                                  widget,
4702                                  NULL,
4703                                  cell_area.x,
4704                                  cell_area.x + cell_area.width,
4705                                  cell_area.y + cell_area.height / 2);
4706               else
4707                 _gtk_tree_view_column_cell_render (column,
4708                                                    event->window,
4709                                                    &background_area,
4710                                                    &cell_area,
4711                                                    &event->area,
4712                                                    flags);
4713               if (TREE_VIEW_DRAW_EXPANDERS(tree_view)
4714                   && (node->flags & GTK_RBNODE_IS_PARENT) == GTK_RBNODE_IS_PARENT)
4715                 {
4716                   if (!got_pointer)
4717                     {
4718                       gdk_window_get_pointer (tree_view->priv->bin_window,
4719                                               &pointer_x, &pointer_y, NULL);
4720                       got_pointer = TRUE;
4721                     }
4722
4723                   gtk_tree_view_draw_arrow (GTK_TREE_VIEW (widget),
4724                                             tree,
4725                                             node,
4726                                             pointer_x, pointer_y);
4727                 }
4728             }
4729           else
4730             {
4731               if (is_separator)
4732                 gtk_paint_hline (widget->style,
4733                                  event->window,
4734                                  state,
4735                                  &cell_area,
4736                                  widget,
4737                                  NULL,
4738                                  cell_area.x,
4739                                  cell_area.x + cell_area.width,
4740                                  cell_area.y + cell_area.height / 2);
4741               else
4742                 _gtk_tree_view_column_cell_render (column,
4743                                                    event->window,
4744                                                    &background_area,
4745                                                    &cell_area,
4746                                                    &event->area,
4747                                                    flags);
4748             }
4749
4750           if (gtk_tree_view_is_expander_column (tree_view, column) &&
4751               tree_view->priv->tree_lines_enabled)
4752             {
4753               gint x = background_area.x;
4754               gint mult = rtl ? -1 : 1;
4755               gint y0 = background_area.y;
4756               gint y1 = background_area.y + background_area.height/2;
4757               gint y2 = background_area.y + background_area.height;
4758
4759               if (rtl)
4760                 x += background_area.width - 1;
4761
4762               if ((node->flags & GTK_RBNODE_IS_PARENT) == GTK_RBNODE_IS_PARENT
4763                   && depth > 1)
4764                 {
4765                   gdk_draw_line (event->window,
4766                                  tree_view->priv->tree_line_gc,
4767                                  x + tree_view->priv->expander_size * (depth - 1.5) * mult,
4768                                  y1,
4769                                  x + tree_view->priv->expander_size * (depth - 1.1) * mult,
4770                                  y1);
4771                 }
4772               else if (depth > 1)
4773                 {
4774                   gdk_draw_line (event->window,
4775                                  tree_view->priv->tree_line_gc,
4776                                  x + tree_view->priv->expander_size * (depth - 1.5) * mult,
4777                                  y1,
4778                                  x + tree_view->priv->expander_size * (depth - 0.5) * mult,
4779                                  y1);
4780                 }
4781
4782               if (depth > 1)
4783                 {
4784                   gint i;
4785                   GtkRBNode *tmp_node;
4786                   GtkRBTree *tmp_tree;
4787
4788                   if (!_gtk_rbtree_next (tree, node))
4789                     gdk_draw_line (event->window,
4790                                    tree_view->priv->tree_line_gc,
4791                                    x + tree_view->priv->expander_size * (depth - 1.5) * mult,
4792                                    y0,
4793                                    x + tree_view->priv->expander_size * (depth - 1.5) * mult,
4794                                    y1);
4795                   else
4796                     gdk_draw_line (event->window,
4797                                    tree_view->priv->tree_line_gc,
4798                                    x + tree_view->priv->expander_size * (depth - 1.5) * mult,
4799                                    y0,
4800                                    x + tree_view->priv->expander_size * (depth - 1.5) * mult,
4801                                    y2);
4802
4803                   tmp_node = tree->parent_node;
4804                   tmp_tree = tree->parent_tree;
4805
4806                   for (i = depth - 2; i > 0; i--)
4807                     {
4808                       if (_gtk_rbtree_next (tmp_tree, tmp_node))
4809                         gdk_draw_line (event->window,
4810                                        tree_view->priv->tree_line_gc,
4811                                        x + tree_view->priv->expander_size * (i - 0.5) * mult,
4812                                        y0,
4813                                        x + tree_view->priv->expander_size * (i - 0.5) * mult,
4814                                        y2);
4815
4816                       tmp_node = tmp_tree->parent_node;
4817                       tmp_tree = tmp_tree->parent_tree;
4818                     }
4819                 }
4820             }
4821
4822           if (node == cursor && has_special_cell &&
4823               ((column == tree_view->priv->focus_column &&
4824                 GTK_TREE_VIEW_FLAG_SET (tree_view, GTK_TREE_VIEW_DRAW_KEYFOCUS) &&
4825                 gtk_widget_has_focus (widget)) ||
4826                (column == tree_view->priv->edited_column)))
4827             {
4828               _gtk_tree_view_column_cell_draw_focus (column,
4829                                                      event->window,
4830                                                      &background_area,
4831                                                      &cell_area,
4832                                                      &event->area,
4833                                                      flags);
4834             }
4835
4836           cell_offset += column->width;
4837         }
4838
4839       if (node == drag_highlight)
4840         {
4841           /* Draw indicator for the drop
4842            */
4843           gint highlight_y = -1;
4844           GtkRBTree *tree = NULL;
4845           GtkRBNode *node = NULL;
4846           gint width;
4847
4848           switch (tree_view->priv->drag_dest_pos)
4849             {
4850             case GTK_TREE_VIEW_DROP_BEFORE:
4851               highlight_y = background_area.y - 1;
4852               if (highlight_y < 0)
4853                       highlight_y = 0;
4854               break;
4855
4856             case GTK_TREE_VIEW_DROP_AFTER:
4857               highlight_y = background_area.y + background_area.height - 1;
4858               break;
4859
4860             case GTK_TREE_VIEW_DROP_INTO_OR_BEFORE:
4861             case GTK_TREE_VIEW_DROP_INTO_OR_AFTER:
4862               _gtk_tree_view_find_node (tree_view, drag_dest_path, &tree, &node);
4863
4864               if (tree == NULL)
4865                 break;
4866               gdk_drawable_get_size (tree_view->priv->bin_window,
4867                                      &width, NULL);
4868
4869               if (row_ending_details)
4870                 gtk_paint_focus (widget->style,
4871                                  tree_view->priv->bin_window,
4872                                  GTK_WIDGET_STATE (widget),
4873                                  &event->area,
4874                                  widget,
4875                                  (is_first
4876                                   ? (is_last ? "treeview-drop-indicator" : "treeview-drop-indicator-left" )
4877                                   : (is_last ? "treeview-drop-indicator-right" : "tree-view-drop-indicator-middle" )),
4878                                  0, BACKGROUND_FIRST_PIXEL (tree_view, tree, node)
4879                                  - focus_line_width / 2,
4880                                  width, ROW_HEIGHT (tree_view, BACKGROUND_HEIGHT (node))
4881                                - focus_line_width + 1);
4882               else
4883                 gtk_paint_focus (widget->style,
4884                                  tree_view->priv->bin_window,
4885                                  GTK_WIDGET_STATE (widget),
4886                                  &event->area,
4887                                  widget,
4888                                  "treeview-drop-indicator",
4889                                  0, BACKGROUND_FIRST_PIXEL (tree_view, tree, node)
4890                                  - focus_line_width / 2,
4891                                  width, ROW_HEIGHT (tree_view, BACKGROUND_HEIGHT (node))
4892                                  - focus_line_width + 1);
4893               break;
4894             }
4895
4896           if (highlight_y >= 0)
4897             {
4898               gdk_draw_line (event->window,
4899                              widget->style->fg_gc[GTK_WIDGET_STATE (widget)],
4900                              rtl ? highlight_x + expander_cell_width : highlight_x,
4901                              highlight_y,
4902                              rtl ? 0 : bin_window_width,
4903                              highlight_y);
4904             }
4905         }
4906
4907       /* draw the big row-spanning focus rectangle, if needed */
4908       if (!has_special_cell && node == cursor &&
4909           GTK_TREE_VIEW_FLAG_SET (tree_view, GTK_TREE_VIEW_DRAW_KEYFOCUS) &&
4910           gtk_widget_has_focus (widget))
4911         {
4912           gint tmp_y, tmp_height;
4913           gint width;
4914           GtkStateType focus_rect_state;
4915
4916           focus_rect_state =
4917             flags & GTK_CELL_RENDERER_SELECTED ? GTK_STATE_SELECTED :
4918             (flags & GTK_CELL_RENDERER_PRELIT ? GTK_STATE_PRELIGHT :
4919              (flags & GTK_CELL_RENDERER_INSENSITIVE ? GTK_STATE_INSENSITIVE :
4920               GTK_STATE_NORMAL));
4921
4922           gdk_drawable_get_size (tree_view->priv->bin_window,
4923                                  &width, NULL);
4924
4925           if (draw_hgrid_lines)
4926             {
4927               tmp_y = BACKGROUND_FIRST_PIXEL (tree_view, tree, node) + grid_line_width / 2;
4928               tmp_height = ROW_HEIGHT (tree_view, BACKGROUND_HEIGHT (node)) - grid_line_width;
4929             }
4930           else
4931             {
4932               tmp_y = BACKGROUND_FIRST_PIXEL (tree_view, tree, node);
4933               tmp_height = ROW_HEIGHT (tree_view, BACKGROUND_HEIGHT (node));
4934             }
4935
4936           if (row_ending_details)
4937             gtk_paint_focus (widget->style,
4938                              tree_view->priv->bin_window,
4939                              focus_rect_state,
4940                              &event->area,
4941                              widget,
4942                              (is_first
4943                               ? (is_last ? "treeview" : "treeview-left" )
4944                               : (is_last ? "treeview-right" : "treeview-middle" )),
4945                              0, tmp_y,
4946                              width, tmp_height);
4947           else
4948             gtk_paint_focus (widget->style,
4949                              tree_view->priv->bin_window,
4950                              focus_rect_state,
4951                              &event->area,
4952                              widget,
4953                              "treeview",
4954                              0, tmp_y,
4955                              width, tmp_height);
4956         }
4957
4958       y_offset += max_height;
4959       if (node->children)
4960         {
4961           GtkTreeIter parent = iter;
4962           gboolean has_child;
4963
4964           tree = node->children;
4965           node = tree->root;
4966
4967           g_assert (node != tree->nil);
4968
4969           while (node->left != tree->nil)
4970             node = node->left;
4971           has_child = gtk_tree_model_iter_children (tree_view->priv->model,
4972                                                     &iter,
4973                                                     &parent);
4974           depth++;
4975
4976           /* Sanity Check! */
4977           TREE_VIEW_INTERNAL_ASSERT (has_child, FALSE);
4978         }
4979       else
4980         {
4981           gboolean done = FALSE;
4982
4983           do
4984             {
4985               node = _gtk_rbtree_next (tree, node);
4986               if (node != NULL)
4987                 {
4988                   gboolean has_next = gtk_tree_model_iter_next (tree_view->priv->model, &iter);
4989                   done = TRUE;
4990
4991                   /* Sanity Check! */
4992                   TREE_VIEW_INTERNAL_ASSERT (has_next, FALSE);
4993                 }
4994               else
4995                 {
4996                   GtkTreeIter parent_iter = iter;
4997                   gboolean has_parent;
4998
4999                   node = tree->parent_node;
5000                   tree = tree->parent_tree;
5001                   if (tree == NULL)
5002                     /* we should go to done to free some memory */
5003                     goto done;
5004                   has_parent = gtk_tree_model_iter_parent (tree_view->priv->model,
5005                                                            &iter,
5006                                                            &parent_iter);
5007                   depth--;
5008
5009                   /* Sanity check */
5010                   TREE_VIEW_INTERNAL_ASSERT (has_parent, FALSE);
5011                 }
5012             }
5013           while (!done);
5014         }
5015     }
5016   while (y_offset < event->area.height);
5017
5018 done:
5019   gtk_tree_view_draw_grid_lines (tree_view, event, n_visible_columns);
5020
5021  if (tree_view->priv->rubber_band_status == RUBBER_BAND_ACTIVE)
5022    {
5023      GdkRectangle *rectangles;
5024      gint n_rectangles;
5025
5026      gdk_region_get_rectangles (event->region,
5027                                 &rectangles,
5028                                 &n_rectangles);
5029
5030      while (n_rectangles--)
5031        gtk_tree_view_paint_rubber_band (tree_view, &rectangles[n_rectangles]);
5032
5033      g_free (rectangles);
5034    }
5035
5036   if (cursor_path)
5037     gtk_tree_path_free (cursor_path);
5038
5039   if (drag_dest_path)
5040     gtk_tree_path_free (drag_dest_path);
5041
5042   return FALSE;
5043 }
5044
5045 static gboolean
5046 gtk_tree_view_expose (GtkWidget      *widget,
5047                       GdkEventExpose *event)
5048 {
5049   GtkTreeView *tree_view = GTK_TREE_VIEW (widget);
5050
5051   if (event->window == tree_view->priv->bin_window)
5052     {
5053       gboolean retval;
5054       GList *tmp_list;
5055
5056       retval = gtk_tree_view_bin_expose (widget, event);
5057
5058       /* We can't just chain up to Container::expose as it will try to send the
5059        * event to the headers, so we handle propagating it to our children
5060        * (eg. widgets being edited) ourselves.
5061        */
5062       tmp_list = tree_view->priv->children;
5063       while (tmp_list)
5064         {
5065           GtkTreeViewChild *child = tmp_list->data;
5066           tmp_list = tmp_list->next;
5067
5068           gtk_container_propagate_expose (GTK_CONTAINER (tree_view), child->widget, event);
5069         }
5070
5071       return retval;
5072     }
5073
5074   else if (event->window == tree_view->priv->header_window)
5075     {
5076       GList *list;
5077
5078       for (list = tree_view->priv->columns; list != NULL; list = list->next)
5079         {
5080           GtkTreeViewColumn *column = list->data;
5081
5082           if (column == tree_view->priv->drag_column)
5083             continue;
5084
5085           if (column->visible)
5086             gtk_container_propagate_expose (GTK_CONTAINER (tree_view),
5087                                             column->button,
5088                                             event);
5089         }
5090     }
5091   else if (event->window == tree_view->priv->drag_window)
5092     {
5093       gtk_container_propagate_expose (GTK_CONTAINER (tree_view),
5094                                       tree_view->priv->drag_column->button,
5095                                       event);
5096     }
5097   return TRUE;
5098 }
5099
5100 enum
5101 {
5102   DROP_HOME,
5103   DROP_RIGHT,
5104   DROP_LEFT,
5105   DROP_END
5106 };
5107
5108 /* returns 0x1 when no column has been found -- yes it's hackish */
5109 static GtkTreeViewColumn *
5110 gtk_tree_view_get_drop_column (GtkTreeView       *tree_view,
5111                                GtkTreeViewColumn *column,
5112                                gint               drop_position)
5113 {
5114   GtkTreeViewColumn *left_column = NULL;
5115   GtkTreeViewColumn *cur_column = NULL;
5116   GList *tmp_list;
5117
5118   if (!column->reorderable)
5119     return (GtkTreeViewColumn *)0x1;
5120
5121   switch (drop_position)
5122     {
5123       case DROP_HOME:
5124         /* find first column where we can drop */
5125         tmp_list = tree_view->priv->columns;
5126         if (column == GTK_TREE_VIEW_COLUMN (tmp_list->data))
5127           return (GtkTreeViewColumn *)0x1;
5128
5129         while (tmp_list)
5130           {
5131             g_assert (tmp_list);
5132
5133             cur_column = GTK_TREE_VIEW_COLUMN (tmp_list->data);
5134             tmp_list = tmp_list->next;
5135
5136             if (left_column && left_column->visible == FALSE)
5137               continue;
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, cur_column, tree_view->priv->column_drop_func_data))
5143               {
5144                 left_column = cur_column;
5145                 continue;
5146               }
5147
5148             return left_column;
5149           }
5150
5151         if (!tree_view->priv->column_drop_func)
5152           return left_column;
5153
5154         if (tree_view->priv->column_drop_func (tree_view, column, left_column, NULL, tree_view->priv->column_drop_func_data))
5155           return left_column;
5156         else
5157           return (GtkTreeViewColumn *)0x1;
5158         break;
5159
5160       case DROP_RIGHT:
5161         /* find first column after column where we can drop */
5162         tmp_list = tree_view->priv->columns;
5163
5164         for (; tmp_list; tmp_list = tmp_list->next)
5165           if (GTK_TREE_VIEW_COLUMN (tmp_list->data) == column)
5166             break;
5167
5168         if (!tmp_list || !tmp_list->next)
5169           return (GtkTreeViewColumn *)0x1;
5170
5171         tmp_list = tmp_list->next;
5172         left_column = GTK_TREE_VIEW_COLUMN (tmp_list->data);
5173         tmp_list = tmp_list->next;
5174
5175         while (tmp_list)
5176           {
5177             g_assert (tmp_list);
5178
5179             cur_column = GTK_TREE_VIEW_COLUMN (tmp_list->data);
5180             tmp_list = tmp_list->next;
5181
5182             if (left_column && left_column->visible == FALSE)
5183               {
5184                 left_column = cur_column;
5185                 if (tmp_list)
5186                   tmp_list = tmp_list->next;
5187                 continue;
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, cur_column, tree_view->priv->column_drop_func_data))
5194               {
5195                 left_column = cur_column;
5196                 continue;
5197               }
5198
5199             return left_column;
5200           }
5201
5202         if (!tree_view->priv->column_drop_func)
5203           return left_column;
5204
5205         if (tree_view->priv->column_drop_func (tree_view, column, left_column, NULL, tree_view->priv->column_drop_func_data))
5206           return left_column;
5207         else
5208           return (GtkTreeViewColumn *)0x1;
5209         break;
5210
5211       case DROP_LEFT:
5212         /* find first column before column where we can drop */
5213         tmp_list = tree_view->priv->columns;
5214
5215         for (; tmp_list; tmp_list = tmp_list->next)
5216           if (GTK_TREE_VIEW_COLUMN (tmp_list->data) == column)
5217             break;
5218
5219         if (!tmp_list || !tmp_list->prev)
5220           return (GtkTreeViewColumn *)0x1;
5221
5222         tmp_list = tmp_list->prev;
5223         cur_column = GTK_TREE_VIEW_COLUMN (tmp_list->data);
5224         tmp_list = tmp_list->prev;
5225
5226         while (tmp_list)
5227           {
5228             g_assert (tmp_list);
5229
5230             left_column = GTK_TREE_VIEW_COLUMN (tmp_list->data);
5231
5232             if (left_column && !left_column->visible)
5233               {
5234                 /*if (!tmp_list->prev)
5235                   return (GtkTreeViewColumn *)0x1;
5236                   */
5237 /*
5238                 cur_column = GTK_TREE_VIEW_COLUMN (tmp_list->prev->data);
5239                 tmp_list = tmp_list->prev->prev;
5240                 continue;*/
5241
5242                 cur_column = left_column;
5243                 if (tmp_list)
5244                   tmp_list = tmp_list->prev;
5245                 continue;
5246               }
5247
5248             if (!tree_view->priv->column_drop_func)
5249               return left_column;
5250
5251             if (tree_view->priv->column_drop_func (tree_view, column, left_column, cur_column, tree_view->priv->column_drop_func_data))
5252               return left_column;
5253
5254             cur_column = left_column;
5255             tmp_list = tmp_list->prev;
5256           }
5257
5258         if (!tree_view->priv->column_drop_func)
5259           return NULL;
5260
5261         if (tree_view->priv->column_drop_func (tree_view, column, NULL, cur_column, tree_view->priv->column_drop_func_data))
5262           return NULL;
5263         else
5264           return (GtkTreeViewColumn *)0x1;
5265         break;
5266
5267       case DROP_END:
5268         /* same as DROP_HOME case, but doing it backwards */
5269         tmp_list = g_list_last (tree_view->priv->columns);
5270         cur_column = NULL;
5271
5272         if (column == GTK_TREE_VIEW_COLUMN (tmp_list->data))
5273           return (GtkTreeViewColumn *)0x1;
5274
5275         while (tmp_list)
5276           {
5277             g_assert (tmp_list);
5278
5279             left_column = GTK_TREE_VIEW_COLUMN (tmp_list->data);
5280
5281             if (left_column && !left_column->visible)
5282               {
5283                 cur_column = left_column;
5284                 tmp_list = tmp_list->prev;
5285               }
5286
5287             if (!tree_view->priv->column_drop_func)
5288               return left_column;
5289
5290             if (tree_view->priv->column_drop_func (tree_view, column, left_column, cur_column, tree_view->priv->column_drop_func_data))
5291               return left_column;
5292
5293             cur_column = left_column;
5294             tmp_list = tmp_list->prev;
5295           }
5296
5297         if (!tree_view->priv->column_drop_func)
5298           return NULL;
5299
5300         if (tree_view->priv->column_drop_func (tree_view, column, NULL, cur_column, tree_view->priv->column_drop_func_data))
5301           return NULL;
5302         else
5303           return (GtkTreeViewColumn *)0x1;
5304         break;
5305     }
5306
5307   return (GtkTreeViewColumn *)0x1;
5308 }
5309
5310 static gboolean
5311 gtk_tree_view_key_press (GtkWidget   *widget,
5312                          GdkEventKey *event)
5313 {
5314   GtkTreeView *tree_view = (GtkTreeView *) widget;
5315
5316   if (tree_view->priv->rubber_band_status)
5317     {
5318       if (event->keyval == GDK_Escape)
5319         gtk_tree_view_stop_rubber_band (tree_view);
5320
5321       return TRUE;
5322     }
5323
5324   if (GTK_TREE_VIEW_FLAG_SET (tree_view, GTK_TREE_VIEW_IN_COLUMN_DRAG))
5325     {
5326       if (event->keyval == GDK_Escape)
5327         {
5328           tree_view->priv->cur_reorder = NULL;
5329           gtk_tree_view_button_release_drag_column (widget, NULL);
5330         }
5331       return TRUE;
5332     }
5333
5334   if (GTK_TREE_VIEW_FLAG_SET (tree_view, GTK_TREE_VIEW_HEADERS_VISIBLE))
5335     {
5336       GList *focus_column;
5337       gboolean rtl;
5338
5339       rtl = (gtk_widget_get_direction (GTK_WIDGET (tree_view)) == GTK_TEXT_DIR_RTL);
5340
5341       for (focus_column = tree_view->priv->columns;
5342            focus_column;
5343            focus_column = focus_column->next)
5344         {
5345           GtkTreeViewColumn *column = GTK_TREE_VIEW_COLUMN (focus_column->data);
5346
5347           if (gtk_widget_has_focus (column->button))
5348             break;
5349         }
5350
5351       if (focus_column &&
5352           (event->state & GDK_SHIFT_MASK) && (event->state & GDK_MOD1_MASK) &&
5353           (event->keyval == GDK_Left || event->keyval == GDK_KP_Left
5354            || event->keyval == GDK_Right || event->keyval == GDK_KP_Right))
5355         {
5356           GtkTreeViewColumn *column = GTK_TREE_VIEW_COLUMN (focus_column->data);
5357
5358           if (!column->resizable)
5359             {
5360               gtk_widget_error_bell (widget);
5361               return TRUE;
5362             }
5363
5364           if (event->keyval == (rtl ? GDK_Right : GDK_Left)
5365               || event->keyval == (rtl ? GDK_KP_Right : GDK_KP_Left))
5366             {
5367               gint old_width = column->resized_width;
5368
5369               column->resized_width = MAX (column->resized_width,
5370                                            column->width);
5371               column->resized_width -= 2;
5372               if (column->resized_width < 0)
5373                 column->resized_width = 0;
5374
5375               if (column->min_width == -1)
5376                 column->resized_width = MAX (column->button->requisition.width,
5377                                              column->resized_width);
5378               else
5379                 column->resized_width = MAX (column->min_width,
5380                                              column->resized_width);
5381
5382               if (column->max_width != -1)
5383                 column->resized_width = MIN (column->resized_width,
5384                                              column->max_width);
5385
5386               column->use_resized_width = TRUE;
5387
5388               if (column->resized_width != old_width)
5389                 gtk_widget_queue_resize (widget);
5390               else
5391                 gtk_widget_error_bell (widget);
5392             }
5393           else if (event->keyval == (rtl ? GDK_Left : GDK_Right)
5394                    || event->keyval == (rtl ? GDK_KP_Left : GDK_KP_Right))
5395             {
5396               gint old_width = column->resized_width;
5397
5398               column->resized_width = MAX (column->resized_width,
5399                                            column->width);
5400               column->resized_width += 2;
5401
5402               if (column->max_width != -1)
5403                 column->resized_width = MIN (column->resized_width,
5404                                              column->max_width);
5405
5406               column->use_resized_width = TRUE;
5407
5408               if (column->resized_width != old_width)
5409                 gtk_widget_queue_resize (widget);
5410               else
5411                 gtk_widget_error_bell (widget);
5412             }
5413
5414           return TRUE;
5415         }
5416
5417       if (focus_column &&
5418           (event->state & GDK_MOD1_MASK) &&
5419           (event->keyval == GDK_Left || event->keyval == GDK_KP_Left
5420            || event->keyval == GDK_Right || event->keyval == GDK_KP_Right
5421            || event->keyval == GDK_Home || event->keyval == GDK_KP_Home
5422            || event->keyval == GDK_End || event->keyval == GDK_KP_End))
5423         {
5424           GtkTreeViewColumn *column = GTK_TREE_VIEW_COLUMN (focus_column->data);
5425
5426           if (event->keyval == (rtl ? GDK_Right : GDK_Left)
5427               || event->keyval == (rtl ? GDK_KP_Right : GDK_KP_Left))
5428             {
5429               GtkTreeViewColumn *col;
5430               col = gtk_tree_view_get_drop_column (tree_view, column, DROP_LEFT);
5431               if (col != (GtkTreeViewColumn *)0x1)
5432                 gtk_tree_view_move_column_after (tree_view, column, col);
5433               else
5434                 gtk_widget_error_bell (widget);
5435             }
5436           else if (event->keyval == (rtl ? GDK_Left : GDK_Right)
5437                    || event->keyval == (rtl ? GDK_KP_Left : GDK_KP_Right))
5438             {
5439               GtkTreeViewColumn *col;
5440               col = gtk_tree_view_get_drop_column (tree_view, column, DROP_RIGHT);
5441               if (col != (GtkTreeViewColumn *)0x1)
5442                 gtk_tree_view_move_column_after (tree_view, column, col);
5443               else
5444                 gtk_widget_error_bell (widget);
5445             }
5446           else if (event->keyval == GDK_Home || event->keyval == GDK_KP_Home)
5447             {
5448               GtkTreeViewColumn *col;
5449               col = gtk_tree_view_get_drop_column (tree_view, column, DROP_HOME);
5450               if (col != (GtkTreeViewColumn *)0x1)
5451                 gtk_tree_view_move_column_after (tree_view, column, col);
5452               else
5453                 gtk_widget_error_bell (widget);
5454             }
5455           else if (event->keyval == GDK_End || event->keyval == GDK_KP_End)
5456             {
5457               GtkTreeViewColumn *col;
5458               col = gtk_tree_view_get_drop_column (tree_view, column, DROP_END);
5459               if (col != (GtkTreeViewColumn *)0x1)
5460                 gtk_tree_view_move_column_after (tree_view, column, col);
5461               else
5462                 gtk_widget_error_bell (widget);
5463             }
5464
5465           return TRUE;
5466         }
5467     }
5468
5469   /* Chain up to the parent class.  It handles the keybindings. */
5470   if (GTK_WIDGET_CLASS (gtk_tree_view_parent_class)->key_press_event (widget, event))
5471     return TRUE;
5472
5473   if (tree_view->priv->search_entry_avoid_unhandled_binding)
5474     {
5475       tree_view->priv->search_entry_avoid_unhandled_binding = FALSE;
5476       return FALSE;
5477     }
5478
5479   /* We pass the event to the search_entry.  If its text changes, then we start
5480    * the typeahead find capabilities. */
5481   if (gtk_widget_has_focus (GTK_WIDGET (tree_view))
5482       && tree_view->priv->enable_search
5483       && !tree_view->priv->search_custom_entry_set)
5484     {
5485       GdkEvent *new_event;
5486       char *old_text;
5487       const char *new_text;
5488       gboolean retval;
5489       GdkScreen *screen;
5490       gboolean text_modified;
5491       gulong popup_menu_id;
5492
5493       gtk_tree_view_ensure_interactive_directory (tree_view);
5494
5495       /* Make a copy of the current text */
5496       old_text = g_strdup (gtk_entry_get_text (GTK_ENTRY (tree_view->priv->search_entry)));
5497       new_event = gdk_event_copy ((GdkEvent *) event);
5498       g_object_unref (((GdkEventKey *) new_event)->window);
5499       ((GdkEventKey *) new_event)->window = g_object_ref (tree_view->priv->search_window->window);
5500       gtk_widget_realize (tree_view->priv->search_window);
5501
5502       popup_menu_id = g_signal_connect (tree_view->priv->search_entry,
5503                                         "popup-menu", G_CALLBACK (gtk_true),
5504                                         NULL);
5505
5506       /* Move the entry off screen */
5507       screen = gtk_widget_get_screen (GTK_WIDGET (tree_view));
5508       gtk_window_move (GTK_WINDOW (tree_view->priv->search_window),
5509                        gdk_screen_get_width (screen) + 1,
5510                        gdk_screen_get_height (screen) + 1);
5511       gtk_widget_show (tree_view->priv->search_window);
5512
5513       /* Send the event to the window.  If the preedit_changed signal is emitted
5514        * during this event, we will set priv->imcontext_changed  */
5515       tree_view->priv->imcontext_changed = FALSE;
5516       retval = gtk_widget_event (tree_view->priv->search_window, new_event);
5517       gdk_event_free (new_event);
5518       gtk_widget_hide (tree_view->priv->search_window);
5519
5520       g_signal_handler_disconnect (tree_view->priv->search_entry,
5521                                    popup_menu_id);
5522
5523       /* We check to make sure that the entry tried to handle the text, and that
5524        * the text has changed.
5525        */
5526       new_text = gtk_entry_get_text (GTK_ENTRY (tree_view->priv->search_entry));
5527       text_modified = strcmp (old_text, new_text) != 0;
5528       g_free (old_text);
5529       if (tree_view->priv->imcontext_changed ||    /* we're in a preedit */
5530           (retval && text_modified))               /* ...or the text was modified */
5531         {
5532           if (gtk_tree_view_real_start_interactive_search (tree_view, FALSE))
5533             {
5534               gtk_widget_grab_focus (GTK_WIDGET (tree_view));
5535               return TRUE;
5536             }
5537           else
5538             {
5539               gtk_entry_set_text (GTK_ENTRY (tree_view->priv->search_entry), "");
5540               return FALSE;
5541             }
5542         }
5543     }
5544
5545   return FALSE;
5546 }
5547
5548 static gboolean
5549 gtk_tree_view_key_release (GtkWidget   *widget,
5550                            GdkEventKey *event)
5551 {
5552   GtkTreeView *tree_view = GTK_TREE_VIEW (widget);
5553
5554   if (tree_view->priv->rubber_band_status)
5555     return TRUE;
5556
5557   return GTK_WIDGET_CLASS (gtk_tree_view_parent_class)->key_release_event (widget, event);
5558 }
5559
5560 /* FIXME Is this function necessary? Can I get an enter_notify event
5561  * w/o either an expose event or a mouse motion event?
5562  */
5563 static gboolean
5564 gtk_tree_view_enter_notify (GtkWidget        *widget,
5565                             GdkEventCrossing *event)
5566 {
5567   GtkTreeView *tree_view = GTK_TREE_VIEW (widget);
5568   GtkRBTree *tree;
5569   GtkRBNode *node;
5570   gint new_y;
5571
5572   /* Sanity check it */
5573   if (event->window != tree_view->priv->bin_window)
5574     return FALSE;
5575
5576   if (tree_view->priv->tree == NULL)
5577     return FALSE;
5578
5579   if (event->mode == GDK_CROSSING_GRAB ||
5580       event->mode == GDK_CROSSING_GTK_GRAB ||
5581       event->mode == GDK_CROSSING_GTK_UNGRAB ||
5582       event->mode == GDK_CROSSING_STATE_CHANGED)
5583     return TRUE;
5584
5585   /* find the node internally */
5586   new_y = TREE_WINDOW_Y_TO_RBTREE_Y(tree_view, event->y);
5587   if (new_y < 0)
5588     new_y = 0;
5589   _gtk_rbtree_find_offset (tree_view->priv->tree, new_y, &tree, &node);
5590
5591   tree_view->priv->event_last_x = event->x;
5592   tree_view->priv->event_last_y = event->y;
5593
5594   if ((tree_view->priv->button_pressed_node == NULL) ||
5595       (tree_view->priv->button_pressed_node == node))
5596     prelight_or_select (tree_view, tree, node, event->x, event->y);
5597
5598   return TRUE;
5599 }
5600
5601 static gboolean
5602 gtk_tree_view_leave_notify (GtkWidget        *widget,
5603                             GdkEventCrossing *event)
5604 {
5605   GtkTreeView *tree_view;
5606
5607   if (event->mode == GDK_CROSSING_GRAB)
5608     return TRUE;
5609
5610   tree_view = GTK_TREE_VIEW (widget);
5611
5612   if (tree_view->priv->prelight_node)
5613     _gtk_tree_view_queue_draw_node (tree_view,
5614                                    tree_view->priv->prelight_tree,
5615                                    tree_view->priv->prelight_node,
5616                                    NULL);
5617
5618   tree_view->priv->event_last_x = -10000;
5619   tree_view->priv->event_last_y = -10000;
5620
5621   prelight_or_select (tree_view,
5622                       NULL, NULL,
5623                       -1000, -1000); /* coords not possibly over an arrow */
5624
5625   return TRUE;
5626 }
5627
5628
5629 static gint
5630 gtk_tree_view_focus_out (GtkWidget     *widget,
5631                          GdkEventFocus *event)
5632 {
5633   GtkTreeView *tree_view;
5634
5635   tree_view = GTK_TREE_VIEW (widget);
5636
5637   gtk_widget_queue_draw (widget);
5638
5639   /* destroy interactive search dialog */
5640   if (tree_view->priv->search_window)
5641     gtk_tree_view_search_dialog_hide (tree_view->priv->search_window, tree_view);
5642
5643   return FALSE;
5644 }
5645
5646
5647 /* Incremental Reflow
5648  */
5649
5650 static void
5651 gtk_tree_view_node_queue_redraw (GtkTreeView *tree_view,
5652                                  GtkRBTree   *tree,
5653                                  GtkRBNode   *node)
5654 {
5655   gint y;
5656
5657   y = _gtk_rbtree_node_find_offset (tree, node)
5658     - tree_view->priv->vadjustment->value
5659     + TREE_VIEW_HEADER_HEIGHT (tree_view);
5660
5661   gtk_widget_queue_draw_area (GTK_WIDGET (tree_view),
5662                               0, y,
5663                               GTK_WIDGET (tree_view)->allocation.width,
5664                               GTK_RBNODE_GET_HEIGHT (node));
5665 }
5666
5667 static gboolean
5668 node_is_visible (GtkTreeView *tree_view,
5669                  GtkRBTree   *tree,
5670                  GtkRBNode   *node)
5671 {
5672   int y;
5673   int height;
5674
5675   y = _gtk_rbtree_node_find_offset (tree, node);
5676   height = ROW_HEIGHT (tree_view, GTK_RBNODE_GET_HEIGHT (node));
5677
5678   if (y >= tree_view->priv->vadjustment->value &&
5679       y + height <= (tree_view->priv->vadjustment->value
5680                      + tree_view->priv->vadjustment->page_size))
5681     return TRUE;
5682
5683   return FALSE;
5684 }
5685
5686 /* Returns TRUE if it updated the size
5687  */
5688 static gboolean
5689 validate_row (GtkTreeView *tree_view,
5690               GtkRBTree   *tree,
5691               GtkRBNode   *node,
5692               GtkTreeIter *iter,
5693               GtkTreePath *path)
5694 {
5695   GtkTreeViewColumn *column;
5696   GList *list, *first_column, *last_column;
5697   gint height = 0;
5698   gint horizontal_separator;
5699   gint vertical_separator;
5700   gint focus_line_width;
5701   gint depth = gtk_tree_path_get_depth (path);
5702   gboolean retval = FALSE;
5703   gboolean is_separator = FALSE;
5704   gboolean draw_vgrid_lines, draw_hgrid_lines;
5705   gint focus_pad;
5706   gint grid_line_width;
5707   gboolean wide_separators;
5708   gint separator_height;
5709
5710   /* double check the row needs validating */
5711   if (! GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_INVALID) &&
5712       ! GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_COLUMN_INVALID))
5713     return FALSE;
5714
5715   is_separator = row_is_separator (tree_view, iter, NULL);
5716
5717   gtk_widget_style_get (GTK_WIDGET (tree_view),
5718                         "focus-padding", &focus_pad,
5719                         "focus-line-width", &focus_line_width,
5720                         "horizontal-separator", &horizontal_separator,
5721                         "vertical-separator", &vertical_separator,
5722                         "grid-line-width", &grid_line_width,
5723                         "wide-separators",  &wide_separators,
5724                         "separator-height", &separator_height,
5725                         NULL);
5726
5727   draw_vgrid_lines =
5728     tree_view->priv->grid_lines == GTK_TREE_VIEW_GRID_LINES_VERTICAL
5729     || tree_view->priv->grid_lines == GTK_TREE_VIEW_GRID_LINES_BOTH;
5730   draw_hgrid_lines =
5731     tree_view->priv->grid_lines == GTK_TREE_VIEW_GRID_LINES_HORIZONTAL
5732     || tree_view->priv->grid_lines == GTK_TREE_VIEW_GRID_LINES_BOTH;
5733
5734   for (last_column = g_list_last (tree_view->priv->columns);
5735        last_column && !(GTK_TREE_VIEW_COLUMN (last_column->data)->visible);
5736        last_column = last_column->prev)
5737     ;
5738
5739   for (first_column = g_list_first (tree_view->priv->columns);
5740        first_column && !(GTK_TREE_VIEW_COLUMN (first_column->data)->visible);
5741        first_column = first_column->next)
5742     ;
5743
5744   for (list = tree_view->priv->columns; list; list = list->next)
5745     {
5746       GtkTreeViewColumnPrivate *column_priv;
5747       GtkRequisition requested_size;
5748       GtkRequisition natural_size;
5749       gint padding;
5750
5751       column = list->data;
5752       column_priv = GTK_TREE_VIEW_COLUMN_GET_PRIVATE (column);
5753
5754       if (! column->visible)
5755         continue;
5756
5757       if (GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_COLUMN_INVALID) && !column->dirty)
5758         continue;
5759
5760       gtk_tree_view_column_cell_set_cell_data (column, tree_view->priv->model, iter,
5761                                                GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_PARENT),
5762                                                node->children?TRUE:FALSE);
5763       gtk_tree_view_column_cell_get_size (column,
5764                                           NULL, NULL, NULL,
5765                                           &requested_size.width,
5766                                           &requested_size.height);
5767       gtk_extended_layout_get_desired_size (GTK_EXTENDED_LAYOUT (column),
5768                                             NULL, &natural_size);
5769
5770       if (!is_separator)
5771         {
5772           requested_size.height += vertical_separator;
5773           height = MAX (height, requested_size.height);
5774           height = MAX (height, tree_view->priv->expander_size);
5775         }
5776       else
5777         {
5778           if (wide_separators)
5779             height = separator_height + 2 * focus_pad;
5780           else
5781             height = 2 + 2 * focus_pad;
5782         }
5783
5784       if (gtk_tree_view_is_expander_column (tree_view, column))
5785         {
5786           padding = horizontal_separator + (depth - 1) * tree_view->priv->level_indentation;
5787
5788           if (TREE_VIEW_DRAW_EXPANDERS (tree_view))
5789             padding += depth * tree_view->priv->expander_size;
5790         }
5791       else
5792         padding = horizontal_separator;
5793
5794       if (draw_vgrid_lines)
5795         {
5796           if (list->data == first_column || list->data == last_column)
5797             padding += grid_line_width / 2.0;
5798           else
5799             padding += grid_line_width;
5800         }
5801
5802       requested_size.width += padding;
5803       natural_size.width += padding;
5804
5805       if (requested_size.width > column->requested_width ||
5806           natural_size.width > column_priv->natural_width)
5807         {
5808           retval = TRUE;
5809           column->requested_width = requested_size.width;
5810           column_priv->natural_width = natural_size.width;
5811         }
5812     }
5813
5814   if (draw_hgrid_lines)
5815     height += grid_line_width;
5816
5817   if (height != GTK_RBNODE_GET_HEIGHT (node))
5818     {
5819       retval = TRUE;
5820       _gtk_rbtree_node_set_height (tree, node, height);
5821     }
5822   _gtk_rbtree_node_mark_valid (tree, node);
5823   tree_view->priv->post_validation_flag = TRUE;
5824
5825   return retval;
5826 }
5827
5828
5829 static void
5830 validate_visible_area (GtkTreeView *tree_view)
5831 {
5832   GtkTreePath *path = NULL;
5833   GtkTreePath *above_path = NULL;
5834   GtkTreeIter iter;
5835   GtkRBTree *tree = NULL;
5836   GtkRBNode *node = NULL;
5837   gboolean need_redraw = FALSE;
5838   gboolean size_changed = FALSE;
5839   gint total_height;
5840   gint area_above = 0;
5841   gint area_below = 0;
5842
5843   if (tree_view->priv->tree == NULL)
5844     return;
5845
5846   if (! GTK_RBNODE_FLAG_SET (tree_view->priv->tree->root, GTK_RBNODE_DESCENDANTS_INVALID) &&
5847       tree_view->priv->scroll_to_path == NULL)
5848     return;
5849
5850   total_height = GTK_WIDGET (tree_view)->allocation.height - TREE_VIEW_HEADER_HEIGHT (tree_view);
5851
5852   if (total_height == 0)
5853     return;
5854
5855   /* First, we check to see if we need to scroll anywhere
5856    */
5857   if (tree_view->priv->scroll_to_path)
5858     {
5859       path = gtk_tree_row_reference_get_path (tree_view->priv->scroll_to_path);
5860       if (path && !_gtk_tree_view_find_node (tree_view, path, &tree, &node))
5861         {
5862           /* we are going to scroll, and will update dy */
5863           gtk_tree_model_get_iter (tree_view->priv->model, &iter, path);
5864           if (GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_INVALID) ||
5865               GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_COLUMN_INVALID))
5866             {
5867               _gtk_tree_view_queue_draw_node (tree_view, tree, node, NULL);
5868               if (validate_row (tree_view, tree, node, &iter, path))
5869                 size_changed = TRUE;
5870             }
5871
5872           if (tree_view->priv->scroll_to_use_align)
5873             {
5874               gint height = ROW_HEIGHT (tree_view, GTK_RBNODE_GET_HEIGHT (node));
5875               area_above = (total_height - height) *
5876                 tree_view->priv->scroll_to_row_align;
5877               area_below = total_height - area_above - height;
5878               area_above = MAX (area_above, 0);
5879               area_below = MAX (area_below, 0);
5880             }
5881           else
5882             {
5883               /* two cases:
5884                * 1) row not visible
5885                * 2) row visible
5886                */
5887               gint dy;
5888               gint height = ROW_HEIGHT (tree_view, GTK_RBNODE_GET_HEIGHT (node));
5889
5890               dy = _gtk_rbtree_node_find_offset (tree, node);
5891
5892               if (dy >= tree_view->priv->vadjustment->value &&
5893                   dy + height <= (tree_view->priv->vadjustment->value
5894                                   + tree_view->priv->vadjustment->page_size))
5895                 {
5896                   /* row visible: keep the row at the same position */
5897                   area_above = dy - tree_view->priv->vadjustment->value;
5898                   area_below = (tree_view->priv->vadjustment->value +
5899                                 tree_view->priv->vadjustment->page_size)
5900                                - dy - height;
5901                 }
5902               else
5903                 {
5904                   /* row not visible */
5905                   if (dy >= 0
5906                       && dy + height <= tree_view->priv->vadjustment->page_size)
5907                     {
5908                       /* row at the beginning -- fixed */
5909                       area_above = dy;
5910                       area_below = tree_view->priv->vadjustment->page_size
5911                                    - area_above - height;
5912                     }
5913                   else if (dy >= (tree_view->priv->vadjustment->upper -
5914                                   tree_view->priv->vadjustment->page_size))
5915                     {
5916                       /* row at the end -- fixed */
5917                       area_above = dy - (tree_view->priv->vadjustment->upper -
5918                                    tree_view->priv->vadjustment->page_size);
5919                       area_below = tree_view->priv->vadjustment->page_size -
5920                                    area_above - height;
5921
5922                       if (area_below < 0)
5923                         {
5924                           area_above = tree_view->priv->vadjustment->page_size - height;
5925                           area_below = 0;
5926                         }
5927                     }
5928                   else
5929                     {
5930                       /* row somewhere in the middle, bring it to the top
5931                        * of the view
5932                        */
5933                       area_above = 0;
5934                       area_below = total_height - height;
5935                     }
5936                 }
5937             }
5938         }
5939       else
5940         /* the scroll to isn't valid; ignore it.
5941          */
5942         {
5943           if (tree_view->priv->scroll_to_path && !path)
5944             {
5945               gtk_tree_row_reference_free (tree_view->priv->scroll_to_path);
5946               tree_view->priv->scroll_to_path = NULL;
5947             }
5948           if (path)
5949             gtk_tree_path_free (path);
5950           path = NULL;
5951         }
5952     }
5953
5954   /* We didn't have a scroll_to set, so we just handle things normally
5955    */
5956   if (path == NULL)
5957     {
5958       gint offset;
5959
5960       offset = _gtk_rbtree_find_offset (tree_view->priv->tree,
5961                                         TREE_WINDOW_Y_TO_RBTREE_Y (tree_view, 0),
5962                                         &tree, &node);
5963       if (node == NULL)
5964         {
5965           /* In this case, nothing has been validated */
5966           path = gtk_tree_path_new_first ();
5967           _gtk_tree_view_find_node (tree_view, path, &tree, &node);
5968         }
5969       else
5970         {
5971           path = _gtk_tree_view_find_path (tree_view, tree, node);
5972           total_height += offset;
5973         }
5974
5975       gtk_tree_model_get_iter (tree_view->priv->model, &iter, path);
5976
5977       if (GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_INVALID) ||
5978           GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_COLUMN_INVALID))
5979         {
5980           _gtk_tree_view_queue_draw_node (tree_view, tree, node, NULL);
5981           if (validate_row (tree_view, tree, node, &iter, path))
5982             size_changed = TRUE;
5983         }
5984       area_above = 0;
5985       area_below = total_height - ROW_HEIGHT (tree_view, GTK_RBNODE_GET_HEIGHT (node));
5986     }
5987
5988   above_path = gtk_tree_path_copy (path);
5989
5990   /* if we do not validate any row above the new top_row, we will make sure
5991    * that the row immediately above top_row has been validated. (if we do not
5992    * do this, _gtk_rbtree_find_offset will find the row above top_row, because
5993    * when invalidated that row's height will be zero. and this will mess up
5994    * scrolling).
5995    */
5996   if (area_above == 0)
5997     {
5998       GtkRBTree *tmptree;
5999       GtkRBNode *tmpnode;
6000
6001       _gtk_tree_view_find_node (tree_view, above_path, &tmptree, &tmpnode);
6002       _gtk_rbtree_prev_full (tmptree, tmpnode, &tmptree, &tmpnode);
6003
6004       if (tmpnode)
6005         {
6006           GtkTreePath *tmppath;
6007           GtkTreeIter tmpiter;
6008
6009           tmppath = _gtk_tree_view_find_path (tree_view, tmptree, tmpnode);
6010           gtk_tree_model_get_iter (tree_view->priv->model, &tmpiter, tmppath);
6011
6012           if (GTK_RBNODE_FLAG_SET (tmpnode, GTK_RBNODE_INVALID) ||
6013               GTK_RBNODE_FLAG_SET (tmpnode, GTK_RBNODE_COLUMN_INVALID))
6014             {
6015               _gtk_tree_view_queue_draw_node (tree_view, tmptree, tmpnode, NULL);
6016               if (validate_row (tree_view, tmptree, tmpnode, &tmpiter, tmppath))
6017                 size_changed = TRUE;
6018             }
6019
6020           gtk_tree_path_free (tmppath);
6021         }
6022     }
6023
6024   /* Now, we walk forwards and backwards, measuring rows. Unfortunately,
6025    * backwards is much slower then forward, as there is no iter_prev function.
6026    * We go forwards first in case we run out of tree.  Then we go backwards to
6027    * fill out the top.
6028    */
6029   while (node && area_below > 0)
6030     {
6031       if (node->children)
6032         {
6033           GtkTreeIter parent = iter;
6034           gboolean has_child;
6035
6036           tree = node->children;
6037           node = tree->root;
6038
6039           g_assert (node != tree->nil);
6040
6041           while (node->left != tree->nil)
6042             node = node->left;
6043           has_child = gtk_tree_model_iter_children (tree_view->priv->model,
6044                                                     &iter,
6045                                                     &parent);
6046           TREE_VIEW_INTERNAL_ASSERT_VOID (has_child);
6047           gtk_tree_path_down (path);
6048         }
6049       else
6050         {
6051           gboolean done = FALSE;
6052           do
6053             {
6054               node = _gtk_rbtree_next (tree, node);
6055               if (node != NULL)
6056                 {
6057                   gboolean has_next = gtk_tree_model_iter_next (tree_view->priv->model, &iter);
6058                   done = TRUE;
6059                   gtk_tree_path_next (path);
6060
6061                   /* Sanity Check! */
6062                   TREE_VIEW_INTERNAL_ASSERT_VOID (has_next);
6063                 }
6064               else
6065                 {
6066                   GtkTreeIter parent_iter = iter;
6067                   gboolean has_parent;
6068
6069                   node = tree->parent_node;
6070                   tree = tree->parent_tree;
6071                   if (tree == NULL)
6072                     break;
6073                   has_parent = gtk_tree_model_iter_parent (tree_view->priv->model,
6074                                                            &iter,
6075                                                            &parent_iter);
6076                   gtk_tree_path_up (path);
6077
6078                   /* Sanity check */
6079                   TREE_VIEW_INTERNAL_ASSERT_VOID (has_parent);
6080                 }
6081             }
6082           while (!done);
6083         }
6084
6085       if (!node)
6086         break;
6087
6088       if (GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_INVALID) ||
6089           GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_COLUMN_INVALID))
6090         {
6091           _gtk_tree_view_queue_draw_node (tree_view, tree, node, NULL);
6092           if (validate_row (tree_view, tree, node, &iter, path))
6093               size_changed = TRUE;
6094         }
6095
6096       area_below -= ROW_HEIGHT (tree_view, GTK_RBNODE_GET_HEIGHT (node));
6097     }
6098   gtk_tree_path_free (path);
6099
6100   /* If we ran out of tree, and have extra area_below left, we need to add it
6101    * to area_above */
6102   if (area_below > 0)
6103     area_above += area_below;
6104
6105   _gtk_tree_view_find_node (tree_view, above_path, &tree, &node);
6106
6107   /* We walk backwards */
6108   while (area_above > 0)
6109     {
6110       _gtk_rbtree_prev_full (tree, node, &tree, &node);
6111
6112       /* Always find the new path in the tree.  We cannot just assume
6113        * a gtk_tree_path_prev() is enough here, as there might be children
6114        * in between this node and the previous sibling node.  If this
6115        * appears to be a performance hotspot in profiles, we can look into
6116        * intrigate logic for keeping path, node and iter in sync like
6117        * we do for forward walks.  (Which will be hard because of the lacking
6118        * iter_prev).
6119        */
6120
6121       if (node == NULL)
6122         break;
6123
6124       gtk_tree_path_free (above_path);
6125       above_path = _gtk_tree_view_find_path (tree_view, tree, node);
6126
6127       gtk_tree_model_get_iter (tree_view->priv->model, &iter, above_path);
6128
6129       if (GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_INVALID) ||
6130           GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_COLUMN_INVALID))
6131         {
6132           _gtk_tree_view_queue_draw_node (tree_view, tree, node, NULL);
6133           if (validate_row (tree_view, tree, node, &iter, above_path))
6134             size_changed = TRUE;
6135         }
6136       area_above -= ROW_HEIGHT (tree_view, GTK_RBNODE_GET_HEIGHT (node));
6137     }
6138
6139   /* if we scrolled to a path, we need to set the dy here,
6140    * and sync the top row accordingly
6141    */
6142   if (tree_view->priv->scroll_to_path)
6143     {
6144       gtk_tree_view_set_top_row (tree_view, above_path, -area_above);
6145       gtk_tree_view_top_row_to_dy (tree_view);
6146
6147       need_redraw = TRUE;
6148     }
6149   else if (tree_view->priv->height <= tree_view->priv->vadjustment->page_size)
6150     {
6151       /* when we are not scrolling, we should never set dy to something
6152        * else than zero. we update top_row to be in sync with dy = 0.
6153        */
6154       gtk_adjustment_set_value (GTK_ADJUSTMENT (tree_view->priv->vadjustment), 0);
6155       gtk_tree_view_dy_to_top_row (tree_view);
6156     }
6157   else if (tree_view->priv->vadjustment->value + tree_view->priv->vadjustment->page_size > tree_view->priv->height)
6158     {
6159       gtk_adjustment_set_value (GTK_ADJUSTMENT (tree_view->priv->vadjustment), tree_view->priv->height - tree_view->priv->vadjustment->page_size);
6160       gtk_tree_view_dy_to_top_row (tree_view);
6161     }
6162   else
6163     gtk_tree_view_top_row_to_dy (tree_view);
6164
6165   /* update width/height and queue a resize */
6166   if (size_changed)
6167     {
6168       GtkRequisition requisition;
6169
6170       /* We temporarily guess a size, under the assumption that it will be the
6171        * same when we get our next size_allocate.  If we don't do this, we'll be
6172        * in an inconsistent state if we call top_row_to_dy. */
6173
6174       gtk_widget_size_request (GTK_WIDGET (tree_view), &requisition);
6175       tree_view->priv->hadjustment->upper = MAX (tree_view->priv->hadjustment->upper, (gfloat)requisition.width);
6176       tree_view->priv->vadjustment->upper = MAX (tree_view->priv->vadjustment->upper, (gfloat)requisition.height);
6177       gtk_adjustment_changed (tree_view->priv->hadjustment);
6178       gtk_adjustment_changed (tree_view->priv->vadjustment);
6179       gtk_widget_queue_resize (GTK_WIDGET (tree_view));
6180     }
6181
6182   if (tree_view->priv->scroll_to_path)
6183     {
6184       gtk_tree_row_reference_free (tree_view->priv->scroll_to_path);
6185       tree_view->priv->scroll_to_path = NULL;
6186     }
6187
6188   if (above_path)
6189     gtk_tree_path_free (above_path);
6190
6191   if (tree_view->priv->scroll_to_column)
6192     {
6193       tree_view->priv->scroll_to_column = NULL;
6194     }
6195   if (need_redraw)
6196     gtk_widget_queue_draw (GTK_WIDGET (tree_view));
6197 }
6198
6199 static void
6200 initialize_fixed_height_mode (GtkTreeView *tree_view)
6201 {
6202   if (!tree_view->priv->tree)
6203     return;
6204
6205   if (tree_view->priv->fixed_height < 0)
6206     {
6207       GtkTreeIter iter;
6208       GtkTreePath *path;
6209
6210       GtkRBTree *tree = NULL;
6211       GtkRBNode *node = NULL;
6212
6213       tree = tree_view->priv->tree;
6214       node = tree->root;
6215
6216       path = _gtk_tree_view_find_path (tree_view, tree, node);
6217       gtk_tree_model_get_iter (tree_view->priv->model, &iter, path);
6218
6219       validate_row (tree_view, tree, node, &iter, path);
6220
6221       gtk_tree_path_free (path);
6222
6223       tree_view->priv->fixed_height = ROW_HEIGHT (tree_view, GTK_RBNODE_GET_HEIGHT (node));
6224     }
6225
6226    _gtk_rbtree_set_fixed_height (tree_view->priv->tree,
6227                                  tree_view->priv->fixed_height, TRUE);
6228 }
6229
6230 /* Our strategy for finding nodes to validate is a little convoluted.  We find
6231  * the left-most uninvalidated node.  We then try walking right, validating
6232  * nodes.  Once we find a valid node, we repeat the previous process of finding
6233  * the first invalid node.
6234  */
6235
6236 static gboolean
6237 do_validate_rows (GtkTreeView *tree_view, gboolean queue_resize)
6238 {
6239   GtkRBTree *tree = NULL;
6240   GtkRBNode *node = NULL;
6241   gboolean validated_area = FALSE;
6242   gint retval = TRUE;
6243   GtkTreePath *path = NULL;
6244   GtkTreeIter iter;
6245   GTimer *timer;
6246   gint i = 0;
6247
6248   gint prev_height = -1;
6249   gboolean fixed_height = TRUE;
6250
6251   g_assert (tree_view);
6252
6253   if (tree_view->priv->tree == NULL)
6254       return FALSE;
6255
6256   if (tree_view->priv->fixed_height_mode)
6257     {
6258       if (tree_view->priv->fixed_height < 0)
6259         initialize_fixed_height_mode (tree_view);
6260
6261       return FALSE;
6262     }
6263
6264   timer = g_timer_new ();
6265   g_timer_start (timer);
6266
6267   do
6268     {
6269       if (! GTK_RBNODE_FLAG_SET (tree_view->priv->tree->root, GTK_RBNODE_DESCENDANTS_INVALID))
6270         {
6271           retval = FALSE;
6272           goto done;
6273         }
6274
6275       if (path != NULL)
6276         {
6277           node = _gtk_rbtree_next (tree, node);
6278           if (node != NULL)
6279             {
6280               TREE_VIEW_INTERNAL_ASSERT (gtk_tree_model_iter_next (tree_view->priv->model, &iter), FALSE);
6281               gtk_tree_path_next (path);
6282             }
6283           else
6284             {
6285               gtk_tree_path_free (path);
6286               path = NULL;
6287             }
6288         }
6289
6290       if (path == NULL)
6291         {
6292           tree = tree_view->priv->tree;
6293           node = tree_view->priv->tree->root;
6294
6295           g_assert (GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_DESCENDANTS_INVALID));
6296
6297           do
6298             {
6299               if (node->left != tree->nil &&
6300                   GTK_RBNODE_FLAG_SET (node->left, GTK_RBNODE_DESCENDANTS_INVALID))
6301                 {
6302                   node = node->left;
6303                 }
6304               else if (node->right != tree->nil &&
6305                        GTK_RBNODE_FLAG_SET (node->right, GTK_RBNODE_DESCENDANTS_INVALID))
6306                 {
6307                   node = node->right;
6308                 }
6309               else if (GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_INVALID) ||
6310                        GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_COLUMN_INVALID))
6311                 {
6312                   break;
6313                 }
6314               else if (node->children != NULL)
6315                 {
6316                   tree = node->children;
6317                   node = tree->root;
6318                 }
6319               else
6320                 /* RBTree corruption!  All bad */
6321                 g_assert_not_reached ();
6322             }
6323           while (TRUE);
6324           path = _gtk_tree_view_find_path (tree_view, tree, node);
6325           gtk_tree_model_get_iter (tree_view->priv->model, &iter, path);
6326         }
6327
6328       validated_area = validate_row (tree_view, tree, node, &iter, path) ||
6329                        validated_area;
6330
6331       if (!tree_view->priv->fixed_height_check)
6332         {
6333           gint height;
6334
6335           height = ROW_HEIGHT (tree_view, GTK_RBNODE_GET_HEIGHT (node));
6336           if (prev_height < 0)
6337             prev_height = height;
6338           else if (prev_height != height)
6339             fixed_height = FALSE;
6340         }
6341
6342       i++;
6343     }
6344   while (g_timer_elapsed (timer, NULL) < GTK_TREE_VIEW_TIME_MS_PER_IDLE / 1000.);
6345
6346   if (!tree_view->priv->fixed_height_check)
6347    {
6348      if (fixed_height)
6349        _gtk_rbtree_set_fixed_height (tree_view->priv->tree, prev_height, FALSE);
6350
6351      tree_view->priv->fixed_height_check = 1;
6352    }
6353
6354  done:
6355   if (validated_area)
6356     {
6357       GtkRequisition requisition;
6358       /* We temporarily guess a size, under the assumption that it will be the
6359        * same when we get our next size_allocate.  If we don't do this, we'll be
6360        * in an inconsistent state when we call top_row_to_dy. */
6361
6362       gtk_widget_size_request (GTK_WIDGET (tree_view), &requisition);
6363       tree_view->priv->hadjustment->upper = MAX (tree_view->priv->hadjustment->upper, (gfloat)requisition.width);
6364       tree_view->priv->vadjustment->upper = MAX (tree_view->priv->vadjustment->upper, (gfloat)requisition.height);
6365       gtk_adjustment_changed (tree_view->priv->hadjustment);
6366       gtk_adjustment_changed (tree_view->priv->vadjustment);
6367
6368       if (queue_resize)
6369         gtk_widget_queue_resize (GTK_WIDGET (tree_view));
6370     }
6371
6372   if (path) gtk_tree_path_free (path);
6373   g_timer_destroy (timer);
6374
6375   return retval;
6376 }
6377
6378 static gboolean
6379 validate_rows (GtkTreeView *tree_view)
6380 {
6381   gboolean retval;
6382
6383   retval = do_validate_rows (tree_view, TRUE);
6384
6385   if (! retval && tree_view->priv->validate_rows_timer)
6386     {
6387       g_source_remove (tree_view->priv->validate_rows_timer);
6388       tree_view->priv->validate_rows_timer = 0;
6389     }
6390
6391   return retval;
6392 }
6393
6394 static gboolean
6395 validate_rows_handler (GtkTreeView *tree_view)
6396 {
6397   gboolean retval;
6398
6399   retval = do_validate_rows (tree_view, TRUE);
6400   if (! retval && tree_view->priv->validate_rows_timer)
6401     {
6402       g_source_remove (tree_view->priv->validate_rows_timer);
6403       tree_view->priv->validate_rows_timer = 0;
6404     }
6405
6406   return retval;
6407 }
6408
6409 static gboolean
6410 do_presize_handler (GtkTreeView *tree_view)
6411 {
6412   if (tree_view->priv->mark_rows_col_dirty)
6413     {
6414       if (tree_view->priv->tree)
6415         _gtk_rbtree_column_invalid (tree_view->priv->tree);
6416       tree_view->priv->mark_rows_col_dirty = FALSE;
6417     }
6418   validate_visible_area (tree_view);
6419   tree_view->priv->presize_handler_timer = 0;
6420
6421   if (tree_view->priv->fixed_height_mode)
6422     {
6423       GtkRequisition requisition;
6424
6425       gtk_widget_size_request (GTK_WIDGET (tree_view), &requisition);
6426
6427       tree_view->priv->hadjustment->upper = MAX (tree_view->priv->hadjustment->upper, (gfloat)requisition.width);
6428       tree_view->priv->vadjustment->upper = MAX (tree_view->priv->vadjustment->upper, (gfloat)requisition.height);
6429       gtk_adjustment_changed (tree_view->priv->hadjustment);
6430       gtk_adjustment_changed (tree_view->priv->vadjustment);
6431       gtk_widget_queue_resize (GTK_WIDGET (tree_view));
6432     }
6433
6434   return FALSE;
6435 }
6436
6437 static gboolean
6438 presize_handler_callback (gpointer data)
6439 {
6440   do_presize_handler (GTK_TREE_VIEW (data));
6441
6442   return FALSE;
6443 }
6444
6445 static void
6446 install_presize_handler (GtkTreeView *tree_view)
6447 {
6448   if (! GTK_WIDGET_REALIZED (tree_view))
6449     return;
6450
6451   if (! tree_view->priv->presize_handler_timer)
6452     {
6453       tree_view->priv->presize_handler_timer =
6454         gdk_threads_add_idle_full (GTK_PRIORITY_RESIZE - 2, presize_handler_callback, tree_view, NULL);
6455     }
6456   if (! tree_view->priv->validate_rows_timer)
6457     {
6458       tree_view->priv->validate_rows_timer =
6459         gdk_threads_add_idle_full (GTK_TREE_VIEW_PRIORITY_VALIDATE, (GSourceFunc) validate_rows_handler, tree_view, NULL);
6460     }
6461 }
6462
6463 static gboolean
6464 scroll_sync_handler (GtkTreeView *tree_view)
6465 {
6466   if (tree_view->priv->height <= tree_view->priv->vadjustment->page_size)
6467     gtk_adjustment_set_value (GTK_ADJUSTMENT (tree_view->priv->vadjustment), 0);
6468   else if (gtk_tree_row_reference_valid (tree_view->priv->top_row))
6469     gtk_tree_view_top_row_to_dy (tree_view);
6470   else
6471     gtk_tree_view_dy_to_top_row (tree_view);
6472
6473   tree_view->priv->scroll_sync_timer = 0;
6474
6475   return FALSE;
6476 }
6477
6478 static void
6479 install_scroll_sync_handler (GtkTreeView *tree_view)
6480 {
6481   if (! GTK_WIDGET_REALIZED (tree_view))
6482     return;
6483
6484   if (!tree_view->priv->scroll_sync_timer)
6485     {
6486       tree_view->priv->scroll_sync_timer =
6487         gdk_threads_add_idle_full (GTK_TREE_VIEW_PRIORITY_SCROLL_SYNC, (GSourceFunc) scroll_sync_handler, tree_view, NULL);
6488     }
6489 }
6490
6491 static void
6492 gtk_tree_view_set_top_row (GtkTreeView *tree_view,
6493                            GtkTreePath *path,
6494                            gint         offset)
6495 {
6496   gtk_tree_row_reference_free (tree_view->priv->top_row);
6497
6498   if (!path)
6499     {
6500       tree_view->priv->top_row = NULL;
6501       tree_view->priv->top_row_dy = 0;
6502     }
6503   else
6504     {
6505       tree_view->priv->top_row = gtk_tree_row_reference_new_proxy (G_OBJECT (tree_view), tree_view->priv->model, path);
6506       tree_view->priv->top_row_dy = offset;
6507     }
6508 }
6509
6510 /* Always call this iff dy is in the visible range.  If the tree is empty, then
6511  * it's set to be NULL, and top_row_dy is 0;
6512  */
6513 static void
6514 gtk_tree_view_dy_to_top_row (GtkTreeView *tree_view)
6515 {
6516   gint offset;
6517   GtkTreePath *path;
6518   GtkRBTree *tree;
6519   GtkRBNode *node;
6520
6521   if (tree_view->priv->tree == NULL)
6522     {
6523       gtk_tree_view_set_top_row (tree_view, NULL, 0);
6524     }
6525   else
6526     {
6527       offset = _gtk_rbtree_find_offset (tree_view->priv->tree,
6528                                         tree_view->priv->dy,
6529                                         &tree, &node);
6530
6531       if (tree == NULL)
6532         {
6533           gtk_tree_view_set_top_row (tree_view, NULL, 0);
6534         }
6535       else
6536         {
6537           path = _gtk_tree_view_find_path (tree_view, tree, node);
6538           gtk_tree_view_set_top_row (tree_view, path, offset);
6539           gtk_tree_path_free (path);
6540         }
6541     }
6542 }
6543
6544 static void
6545 gtk_tree_view_top_row_to_dy (GtkTreeView *tree_view)
6546 {
6547   GtkTreePath *path;
6548   GtkRBTree *tree;
6549   GtkRBNode *node;
6550   int new_dy;
6551
6552   /* Avoid recursive calls */
6553   if (tree_view->priv->in_top_row_to_dy)
6554     return;
6555
6556   if (tree_view->priv->top_row)
6557     path = gtk_tree_row_reference_get_path (tree_view->priv->top_row);
6558   else
6559     path = NULL;
6560
6561   if (!path)
6562     tree = NULL;
6563   else
6564     _gtk_tree_view_find_node (tree_view, path, &tree, &node);
6565
6566   if (path)
6567     gtk_tree_path_free (path);
6568
6569   if (tree == NULL)
6570     {
6571       /* keep dy and set new toprow */
6572       gtk_tree_row_reference_free (tree_view->priv->top_row);
6573       tree_view->priv->top_row = NULL;
6574       tree_view->priv->top_row_dy = 0;
6575       /* DO NOT install the idle handler */
6576       gtk_tree_view_dy_to_top_row (tree_view);
6577       return;
6578     }
6579
6580   if (ROW_HEIGHT (tree_view, BACKGROUND_HEIGHT (node))
6581       < tree_view->priv->top_row_dy)
6582     {
6583       /* new top row -- do NOT install the idle handler */
6584       gtk_tree_view_dy_to_top_row (tree_view);
6585       return;
6586     }
6587
6588   new_dy = _gtk_rbtree_node_find_offset (tree, node);
6589   new_dy += tree_view->priv->top_row_dy;
6590
6591   if (new_dy + tree_view->priv->vadjustment->page_size > tree_view->priv->height)
6592     new_dy = tree_view->priv->height - tree_view->priv->vadjustment->page_size;
6593
6594   new_dy = MAX (0, new_dy);
6595
6596   tree_view->priv->in_top_row_to_dy = TRUE;
6597   gtk_adjustment_set_value (tree_view->priv->vadjustment, (gdouble)new_dy);
6598   tree_view->priv->in_top_row_to_dy = FALSE;
6599 }
6600
6601
6602 void
6603 _gtk_tree_view_install_mark_rows_col_dirty (GtkTreeView *tree_view)
6604 {
6605   tree_view->priv->mark_rows_col_dirty = TRUE;
6606
6607   install_presize_handler (tree_view);
6608 }
6609
6610 /*
6611  * This function works synchronously (due to the while (validate_rows...)
6612  * loop).
6613  *
6614  * There was a check for column_type != GTK_TREE_VIEW_COLUMN_AUTOSIZE
6615  * here. You now need to check that yourself.
6616  */
6617 void
6618 _gtk_tree_view_column_autosize (GtkTreeView *tree_view,
6619                                 GtkTreeViewColumn *column)
6620 {
6621   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
6622   g_return_if_fail (GTK_IS_TREE_VIEW_COLUMN (column));
6623
6624   _gtk_tree_view_column_cell_set_dirty (column, FALSE);
6625
6626   do_presize_handler (tree_view);
6627   while (validate_rows (tree_view));
6628
6629   gtk_widget_queue_resize (GTK_WIDGET (tree_view));
6630 }
6631
6632 /* Drag-and-drop */
6633
6634 static void
6635 set_source_row (GdkDragContext *context,
6636                 GtkTreeModel   *model,
6637                 GtkTreePath    *source_row)
6638 {
6639   g_object_set_data_full (G_OBJECT (context),
6640                           I_("gtk-tree-view-source-row"),
6641                           source_row ? gtk_tree_row_reference_new (model, source_row) : NULL,
6642                           (GDestroyNotify) (source_row ? gtk_tree_row_reference_free : NULL));
6643 }
6644
6645 static GtkTreePath*
6646 get_source_row (GdkDragContext *context)
6647 {
6648   GtkTreeRowReference *ref =
6649     g_object_get_data (G_OBJECT (context), "gtk-tree-view-source-row");
6650
6651   if (ref)
6652     return gtk_tree_row_reference_get_path (ref);
6653   else
6654     return NULL;
6655 }
6656
6657 typedef struct
6658 {
6659   GtkTreeRowReference *dest_row;
6660   guint                path_down_mode   : 1;
6661   guint                empty_view_drop  : 1;
6662   guint                drop_append_mode : 1;
6663 }
6664 DestRow;
6665
6666 static void
6667 dest_row_free (gpointer data)
6668 {
6669   DestRow *dr = (DestRow *)data;
6670
6671   gtk_tree_row_reference_free (dr->dest_row);
6672   g_slice_free (DestRow, dr);
6673 }
6674
6675 static void
6676 set_dest_row (GdkDragContext *context,
6677               GtkTreeModel   *model,
6678               GtkTreePath    *dest_row,
6679               gboolean        path_down_mode,
6680               gboolean        empty_view_drop,
6681               gboolean        drop_append_mode)
6682 {
6683   DestRow *dr;
6684
6685   if (!dest_row)
6686     {
6687       g_object_set_data_full (G_OBJECT (context), I_("gtk-tree-view-dest-row"),
6688                               NULL, NULL);
6689       return;
6690     }
6691
6692   dr = g_slice_new (DestRow);
6693
6694   dr->dest_row = gtk_tree_row_reference_new (model, dest_row);
6695   dr->path_down_mode = path_down_mode != FALSE;
6696   dr->empty_view_drop = empty_view_drop != FALSE;
6697   dr->drop_append_mode = drop_append_mode != FALSE;
6698
6699   g_object_set_data_full (G_OBJECT (context), I_("gtk-tree-view-dest-row"),
6700                           dr, (GDestroyNotify) dest_row_free);
6701 }
6702
6703 static GtkTreePath*
6704 get_dest_row (GdkDragContext *context,
6705               gboolean       *path_down_mode)
6706 {
6707   DestRow *dr =
6708     g_object_get_data (G_OBJECT (context), "gtk-tree-view-dest-row");
6709
6710   if (dr)
6711     {
6712       GtkTreePath *path = NULL;
6713
6714       if (path_down_mode)
6715         *path_down_mode = dr->path_down_mode;
6716
6717       if (dr->dest_row)
6718         path = gtk_tree_row_reference_get_path (dr->dest_row);
6719       else if (dr->empty_view_drop)
6720         path = gtk_tree_path_new_from_indices (0, -1);
6721       else
6722         path = NULL;
6723
6724       if (path && dr->drop_append_mode)
6725         gtk_tree_path_next (path);
6726
6727       return path;
6728     }
6729   else
6730     return NULL;
6731 }
6732
6733 /* Get/set whether drag_motion requested the drag data and
6734  * drag_data_received should thus not actually insert the data,
6735  * since the data doesn't result from a drop.
6736  */
6737 static void
6738 set_status_pending (GdkDragContext *context,
6739                     GdkDragAction   suggested_action)
6740 {
6741   g_object_set_data (G_OBJECT (context),
6742                      I_("gtk-tree-view-status-pending"),
6743                      GINT_TO_POINTER (suggested_action));
6744 }
6745
6746 static GdkDragAction
6747 get_status_pending (GdkDragContext *context)
6748 {
6749   return GPOINTER_TO_INT (g_object_get_data (G_OBJECT (context),
6750                                              "gtk-tree-view-status-pending"));
6751 }
6752
6753 static TreeViewDragInfo*
6754 get_info (GtkTreeView *tree_view)
6755 {
6756   return g_object_get_data (G_OBJECT (tree_view), "gtk-tree-view-drag-info");
6757 }
6758
6759 static void
6760 destroy_info (TreeViewDragInfo *di)
6761 {
6762   g_slice_free (TreeViewDragInfo, di);
6763 }
6764
6765 static TreeViewDragInfo*
6766 ensure_info (GtkTreeView *tree_view)
6767 {
6768   TreeViewDragInfo *di;
6769
6770   di = get_info (tree_view);
6771
6772   if (di == NULL)
6773     {
6774       di = g_slice_new0 (TreeViewDragInfo);
6775
6776       g_object_set_data_full (G_OBJECT (tree_view),
6777                               I_("gtk-tree-view-drag-info"),
6778                               di,
6779                               (GDestroyNotify) destroy_info);
6780     }
6781
6782   return di;
6783 }
6784
6785 static void
6786 remove_info (GtkTreeView *tree_view)
6787 {
6788   g_object_set_data (G_OBJECT (tree_view), I_("gtk-tree-view-drag-info"), NULL);
6789 }
6790
6791 #if 0
6792 static gint
6793 drag_scan_timeout (gpointer data)
6794 {
6795   GtkTreeView *tree_view;
6796   gint x, y;
6797   GdkModifierType state;
6798   GtkTreePath *path = NULL;
6799   GtkTreeViewColumn *column = NULL;
6800   GdkRectangle visible_rect;
6801
6802   GDK_THREADS_ENTER ();
6803
6804   tree_view = GTK_TREE_VIEW (data);
6805
6806   gdk_window_get_pointer (tree_view->priv->bin_window,
6807                           &x, &y, &state);
6808
6809   gtk_tree_view_get_visible_rect (tree_view, &visible_rect);
6810
6811   /* See if we are near the edge. */
6812   if ((x - visible_rect.x) < SCROLL_EDGE_SIZE ||
6813       (visible_rect.x + visible_rect.width - x) < SCROLL_EDGE_SIZE ||
6814       (y - visible_rect.y) < SCROLL_EDGE_SIZE ||
6815       (visible_rect.y + visible_rect.height - y) < SCROLL_EDGE_SIZE)
6816     {
6817       gtk_tree_view_get_path_at_pos (tree_view,
6818                                      tree_view->priv->bin_window,
6819                                      x, y,
6820                                      &path,
6821                                      &column,
6822                                      NULL,
6823                                      NULL);
6824
6825       if (path != NULL)
6826         {
6827           gtk_tree_view_scroll_to_cell (tree_view,
6828                                         path,
6829                                         column,
6830                                         TRUE,
6831                                         0.5, 0.5);
6832
6833           gtk_tree_path_free (path);
6834         }
6835     }
6836
6837   GDK_THREADS_LEAVE ();
6838
6839   return TRUE;
6840 }
6841 #endif /* 0 */
6842
6843 static void
6844 add_scroll_timeout (GtkTreeView *tree_view)
6845 {
6846   if (tree_view->priv->scroll_timeout == 0)
6847     {
6848       tree_view->priv->scroll_timeout =
6849         gdk_threads_add_timeout (150, scroll_row_timeout, tree_view);
6850     }
6851 }
6852
6853 static void
6854 remove_scroll_timeout (GtkTreeView *tree_view)
6855 {
6856   if (tree_view->priv->scroll_timeout != 0)
6857     {
6858       g_source_remove (tree_view->priv->scroll_timeout);
6859       tree_view->priv->scroll_timeout = 0;
6860     }
6861 }
6862
6863 static gboolean
6864 check_model_dnd (GtkTreeModel *model,
6865                  GType         required_iface,
6866                  const gchar  *signal)
6867 {
6868   if (model == NULL || !G_TYPE_CHECK_INSTANCE_TYPE ((model), required_iface))
6869     {
6870       g_warning ("You must override the default '%s' handler "
6871                  "on GtkTreeView when using models that don't support "
6872                  "the %s interface and enabling drag-and-drop. The simplest way to do this "
6873                  "is to connect to '%s' and call "
6874                  "g_signal_stop_emission_by_name() in your signal handler to prevent "
6875                  "the default handler from running. Look at the source code "
6876                  "for the default handler in gtktreeview.c to get an idea what "
6877                  "your handler should do. (gtktreeview.c is in the GTK source "
6878                  "code.) If you're using GTK from a language other than C, "
6879                  "there may be a more natural way to override default handlers, e.g. via derivation.",
6880                  signal, g_type_name (required_iface), signal);
6881       return FALSE;
6882     }
6883   else
6884     return TRUE;
6885 }
6886
6887 static void
6888 remove_open_timeout (GtkTreeView *tree_view)
6889 {
6890   if (tree_view->priv->open_dest_timeout != 0)
6891     {
6892       g_source_remove (tree_view->priv->open_dest_timeout);
6893       tree_view->priv->open_dest_timeout = 0;
6894     }
6895 }
6896
6897
6898 static gint
6899 open_row_timeout (gpointer data)
6900 {
6901   GtkTreeView *tree_view = data;
6902   GtkTreePath *dest_path = NULL;
6903   GtkTreeViewDropPosition pos;
6904   gboolean result = FALSE;
6905
6906   gtk_tree_view_get_drag_dest_row (tree_view,
6907                                    &dest_path,
6908                                    &pos);
6909
6910   if (dest_path &&
6911       (pos == GTK_TREE_VIEW_DROP_INTO_OR_AFTER ||
6912        pos == GTK_TREE_VIEW_DROP_INTO_OR_BEFORE))
6913     {
6914       gtk_tree_view_expand_row (tree_view, dest_path, FALSE);
6915       tree_view->priv->open_dest_timeout = 0;
6916
6917       gtk_tree_path_free (dest_path);
6918     }
6919   else
6920     {
6921       if (dest_path)
6922         gtk_tree_path_free (dest_path);
6923
6924       result = TRUE;
6925     }
6926
6927   return result;
6928 }
6929
6930 static gboolean
6931 scroll_row_timeout (gpointer data)
6932 {
6933   GtkTreeView *tree_view = data;
6934
6935   gtk_tree_view_vertical_autoscroll (tree_view);
6936
6937   if (tree_view->priv->rubber_band_status == RUBBER_BAND_ACTIVE)
6938     gtk_tree_view_update_rubber_band (tree_view);
6939
6940   return TRUE;
6941 }
6942
6943 /* Returns TRUE if event should not be propagated to parent widgets */
6944 static gboolean
6945 set_destination_row (GtkTreeView    *tree_view,
6946                      GdkDragContext *context,
6947                      /* coordinates relative to the widget */
6948                      gint            x,
6949                      gint            y,
6950                      GdkDragAction  *suggested_action,
6951                      GdkAtom        *target)
6952 {
6953   GtkTreePath *path = NULL;
6954   GtkTreeViewDropPosition pos;
6955   GtkTreeViewDropPosition old_pos;
6956   TreeViewDragInfo *di;
6957   GtkWidget *widget;
6958   GtkTreePath *old_dest_path = NULL;
6959   gboolean can_drop = FALSE;
6960
6961   *suggested_action = 0;
6962   *target = GDK_NONE;
6963
6964   widget = GTK_WIDGET (tree_view);
6965
6966   di = get_info (tree_view);
6967
6968   if (di == NULL || y - TREE_VIEW_HEADER_HEIGHT (tree_view) < 0)
6969     {
6970       /* someone unset us as a drag dest, note that if
6971        * we return FALSE drag_leave isn't called
6972        */
6973
6974       gtk_tree_view_set_drag_dest_row (tree_view,
6975                                        NULL,
6976                                        GTK_TREE_VIEW_DROP_BEFORE);
6977
6978       remove_scroll_timeout (GTK_TREE_VIEW (widget));
6979       remove_open_timeout (GTK_TREE_VIEW (widget));
6980
6981       return FALSE; /* no longer a drop site */
6982     }
6983
6984   *target = gtk_drag_dest_find_target (widget, context,
6985                                        gtk_drag_dest_get_target_list (widget));
6986   if (*target == GDK_NONE)
6987     {
6988       return FALSE;
6989     }
6990
6991   if (!gtk_tree_view_get_dest_row_at_pos (tree_view,
6992                                           x, y,
6993                                           &path,
6994                                           &pos))
6995     {
6996       gint n_children;
6997       GtkTreeModel *model;
6998
6999       remove_open_timeout (tree_view);
7000
7001       /* the row got dropped on empty space, let's setup a special case
7002        */
7003
7004       if (path)
7005         gtk_tree_path_free (path);
7006
7007       model = gtk_tree_view_get_model (tree_view);
7008
7009       n_children = gtk_tree_model_iter_n_children (model, NULL);
7010       if (n_children)
7011         {
7012           pos = GTK_TREE_VIEW_DROP_AFTER;
7013           path = gtk_tree_path_new_from_indices (n_children - 1, -1);
7014         }
7015       else
7016         {
7017           pos = GTK_TREE_VIEW_DROP_BEFORE;
7018           path = gtk_tree_path_new_from_indices (0, -1);
7019         }
7020
7021       can_drop = TRUE;
7022
7023       goto out;
7024     }
7025
7026   g_assert (path);
7027
7028   /* If we left the current row's "open" zone, unset the timeout for
7029    * opening the row
7030    */
7031   gtk_tree_view_get_drag_dest_row (tree_view,
7032                                    &old_dest_path,
7033                                    &old_pos);
7034
7035   if (old_dest_path &&
7036       (gtk_tree_path_compare (path, old_dest_path) != 0 ||
7037        !(pos == GTK_TREE_VIEW_DROP_INTO_OR_AFTER ||
7038          pos == GTK_TREE_VIEW_DROP_INTO_OR_BEFORE)))
7039     remove_open_timeout (tree_view);
7040
7041   if (old_dest_path)
7042     gtk_tree_path_free (old_dest_path);
7043
7044   if (TRUE /* FIXME if the location droppable predicate */)
7045     {
7046       can_drop = TRUE;
7047     }
7048
7049 out:
7050   if (can_drop)
7051     {
7052       GtkWidget *source_widget;
7053
7054       *suggested_action = context->suggested_action;
7055       source_widget = gtk_drag_get_source_widget (context);
7056
7057       if (source_widget == widget)
7058         {
7059           /* Default to MOVE, unless the user has
7060            * pressed ctrl or shift to affect available actions
7061            */
7062           if ((context->actions & GDK_ACTION_MOVE) != 0)
7063             *suggested_action = GDK_ACTION_MOVE;
7064         }
7065
7066       gtk_tree_view_set_drag_dest_row (GTK_TREE_VIEW (widget),
7067                                        path, pos);
7068     }
7069   else
7070     {
7071       /* can't drop here */
7072       remove_open_timeout (tree_view);
7073
7074       gtk_tree_view_set_drag_dest_row (GTK_TREE_VIEW (widget),
7075                                        NULL,
7076                                        GTK_TREE_VIEW_DROP_BEFORE);
7077     }
7078
7079   if (path)
7080     gtk_tree_path_free (path);
7081
7082   return TRUE;
7083 }
7084
7085 static GtkTreePath*
7086 get_logical_dest_row (GtkTreeView *tree_view,
7087                       gboolean    *path_down_mode,
7088                       gboolean    *drop_append_mode)
7089 {
7090   /* adjust path to point to the row the drop goes in front of */
7091   GtkTreePath *path = NULL;
7092   GtkTreeViewDropPosition pos;
7093
7094   g_return_val_if_fail (path_down_mode != NULL, NULL);
7095   g_return_val_if_fail (drop_append_mode != NULL, NULL);
7096
7097   *path_down_mode = FALSE;
7098   *drop_append_mode = 0;
7099
7100   gtk_tree_view_get_drag_dest_row (tree_view, &path, &pos);
7101
7102   if (path == NULL)
7103     return NULL;
7104
7105   if (pos == GTK_TREE_VIEW_DROP_BEFORE)
7106     ; /* do nothing */
7107   else if (pos == GTK_TREE_VIEW_DROP_INTO_OR_BEFORE ||
7108            pos == GTK_TREE_VIEW_DROP_INTO_OR_AFTER)
7109     *path_down_mode = TRUE;
7110   else
7111     {
7112       GtkTreeIter iter;
7113       GtkTreeModel *model = gtk_tree_view_get_model (tree_view);
7114
7115       g_assert (pos == GTK_TREE_VIEW_DROP_AFTER);
7116
7117       if (!gtk_tree_model_get_iter (model, &iter, path) ||
7118           !gtk_tree_model_iter_next (model, &iter))
7119         *drop_append_mode = 1;
7120       else
7121         {
7122           *drop_append_mode = 0;
7123           gtk_tree_path_next (path);
7124         }
7125     }
7126
7127   return path;
7128 }
7129
7130 static gboolean
7131 gtk_tree_view_maybe_begin_dragging_row (GtkTreeView      *tree_view,
7132                                         GdkEventMotion   *event)
7133 {
7134   GtkWidget *widget = GTK_WIDGET (tree_view);
7135   GdkDragContext *context;
7136   TreeViewDragInfo *di;
7137   GtkTreePath *path = NULL;
7138   gint button;
7139   gint cell_x, cell_y;
7140   GtkTreeModel *model;
7141   gboolean retval = FALSE;
7142
7143   di = get_info (tree_view);
7144
7145   if (di == NULL || !di->source_set)
7146     goto out;
7147
7148   if (tree_view->priv->pressed_button < 0)
7149     goto out;
7150
7151   if (!gtk_drag_check_threshold (widget,
7152                                  tree_view->priv->press_start_x,
7153                                  tree_view->priv->press_start_y,
7154                                  event->x, event->y))
7155     goto out;
7156
7157   model = gtk_tree_view_get_model (tree_view);
7158
7159   if (model == NULL)
7160     goto out;
7161
7162   button = tree_view->priv->pressed_button;
7163   tree_view->priv->pressed_button = -1;
7164
7165   gtk_tree_view_get_path_at_pos (tree_view,
7166                                  tree_view->priv->press_start_x,
7167                                  tree_view->priv->press_start_y,
7168                                  &path,
7169                                  NULL,
7170                                  &cell_x,
7171                                  &cell_y);
7172
7173   if (path == NULL)
7174     goto out;
7175
7176   if (!GTK_IS_TREE_DRAG_SOURCE (model) ||
7177       !gtk_tree_drag_source_row_draggable (GTK_TREE_DRAG_SOURCE (model),
7178                                            path))
7179     goto out;
7180
7181   if (!(GDK_BUTTON1_MASK << (button - 1) & di->start_button_mask))
7182     goto out;
7183
7184   /* Now we can begin the drag */
7185
7186   retval = TRUE;
7187
7188   context = gtk_drag_begin (widget,
7189                             gtk_drag_source_get_target_list (widget),
7190                             di->source_actions,
7191                             button,
7192                             (GdkEvent*)event);
7193
7194   set_source_row (context, model, path);
7195
7196  out:
7197   if (path)
7198     gtk_tree_path_free (path);
7199
7200   return retval;
7201 }
7202
7203
7204 static void
7205 gtk_tree_view_drag_begin (GtkWidget      *widget,
7206                           GdkDragContext *context)
7207 {
7208   GtkTreeView *tree_view;
7209   GtkTreePath *path = NULL;
7210   gint cell_x, cell_y;
7211   GdkPixmap *row_pix;
7212   TreeViewDragInfo *di;
7213
7214   tree_view = GTK_TREE_VIEW (widget);
7215
7216   /* if the user uses a custom DND source impl, we don't set the icon here */
7217   di = get_info (tree_view);
7218
7219   if (di == NULL || !di->source_set)
7220     return;
7221
7222   gtk_tree_view_get_path_at_pos (tree_view,
7223                                  tree_view->priv->press_start_x,
7224                                  tree_view->priv->press_start_y,
7225                                  &path,
7226                                  NULL,
7227                                  &cell_x,
7228                                  &cell_y);
7229
7230   g_return_if_fail (path != NULL);
7231
7232   row_pix = gtk_tree_view_create_row_drag_icon (tree_view,
7233                                                 path);
7234
7235   gtk_drag_set_icon_pixmap (context,
7236                             gdk_drawable_get_colormap (row_pix),
7237                             row_pix,
7238                             NULL,
7239                             /* the + 1 is for the black border in the icon */
7240                             tree_view->priv->press_start_x + 1,
7241                             cell_y + 1);
7242
7243   g_object_unref (row_pix);
7244   gtk_tree_path_free (path);
7245 }
7246
7247 static void
7248 gtk_tree_view_drag_end (GtkWidget      *widget,
7249                         GdkDragContext *context)
7250 {
7251   /* do nothing */
7252 }
7253
7254 /* Default signal implementations for the drag signals */
7255 static void
7256 gtk_tree_view_drag_data_get (GtkWidget        *widget,
7257                              GdkDragContext   *context,
7258                              GtkSelectionData *selection_data,
7259                              guint             info,
7260                              guint             time)
7261 {
7262   GtkTreeView *tree_view;
7263   GtkTreeModel *model;
7264   TreeViewDragInfo *di;
7265   GtkTreePath *source_row;
7266
7267   tree_view = GTK_TREE_VIEW (widget);
7268
7269   model = gtk_tree_view_get_model (tree_view);
7270
7271   if (model == NULL)
7272     return;
7273
7274   di = get_info (GTK_TREE_VIEW (widget));
7275
7276   if (di == NULL)
7277     return;
7278
7279   source_row = get_source_row (context);
7280
7281   if (source_row == NULL)
7282     return;
7283
7284   /* We can implement the GTK_TREE_MODEL_ROW target generically for
7285    * any model; for DragSource models there are some other targets
7286    * we also support.
7287    */
7288
7289   if (GTK_IS_TREE_DRAG_SOURCE (model) &&
7290       gtk_tree_drag_source_drag_data_get (GTK_TREE_DRAG_SOURCE (model),
7291                                           source_row,
7292                                           selection_data))
7293     goto done;
7294
7295   /* If drag_data_get does nothing, try providing row data. */
7296   if (selection_data->target == gdk_atom_intern_static_string ("GTK_TREE_MODEL_ROW"))
7297     {
7298       gtk_tree_set_row_drag_data (selection_data,
7299                                   model,
7300                                   source_row);
7301     }
7302
7303  done:
7304   gtk_tree_path_free (source_row);
7305 }
7306
7307
7308 static void
7309 gtk_tree_view_drag_data_delete (GtkWidget      *widget,
7310                                 GdkDragContext *context)
7311 {
7312   TreeViewDragInfo *di;
7313   GtkTreeModel *model;
7314   GtkTreeView *tree_view;
7315   GtkTreePath *source_row;
7316
7317   tree_view = GTK_TREE_VIEW (widget);
7318   model = gtk_tree_view_get_model (tree_view);
7319
7320   if (!check_model_dnd (model, GTK_TYPE_TREE_DRAG_SOURCE, "drag_data_delete"))
7321     return;
7322
7323   di = get_info (tree_view);
7324
7325   if (di == NULL)
7326     return;
7327
7328   source_row = get_source_row (context);
7329
7330   if (source_row == NULL)
7331     return;
7332
7333   gtk_tree_drag_source_drag_data_delete (GTK_TREE_DRAG_SOURCE (model),
7334                                          source_row);
7335
7336   gtk_tree_path_free (source_row);
7337
7338   set_source_row (context, NULL, NULL);
7339 }
7340
7341 static void
7342 gtk_tree_view_drag_leave (GtkWidget      *widget,
7343                           GdkDragContext *context,
7344                           guint             time)
7345 {
7346   /* unset any highlight row */
7347   gtk_tree_view_set_drag_dest_row (GTK_TREE_VIEW (widget),
7348                                    NULL,
7349                                    GTK_TREE_VIEW_DROP_BEFORE);
7350
7351   remove_scroll_timeout (GTK_TREE_VIEW (widget));
7352   remove_open_timeout (GTK_TREE_VIEW (widget));
7353 }
7354
7355
7356 static gboolean
7357 gtk_tree_view_drag_motion (GtkWidget        *widget,
7358                            GdkDragContext   *context,
7359                            /* coordinates relative to the widget */
7360                            gint              x,
7361                            gint              y,
7362                            guint             time)
7363 {
7364   gboolean empty;
7365   GtkTreePath *path = NULL;
7366   GtkTreeViewDropPosition pos;
7367   GtkTreeView *tree_view;
7368   GdkDragAction suggested_action = 0;
7369   GdkAtom target;
7370
7371   tree_view = GTK_TREE_VIEW (widget);
7372
7373   if (!set_destination_row (tree_view, context, x, y, &suggested_action, &target))
7374     return FALSE;
7375
7376   gtk_tree_view_get_drag_dest_row (tree_view, &path, &pos);
7377
7378   /* we only know this *after* set_desination_row */
7379   empty = tree_view->priv->empty_view_drop;
7380
7381   if (path == NULL && !empty)
7382     {
7383       /* Can't drop here. */
7384       gdk_drag_status (context, 0, time);
7385     }
7386   else
7387     {
7388       if (tree_view->priv->open_dest_timeout == 0 &&
7389           (pos == GTK_TREE_VIEW_DROP_INTO_OR_AFTER ||
7390            pos == GTK_TREE_VIEW_DROP_INTO_OR_BEFORE))
7391         {
7392           tree_view->priv->open_dest_timeout =
7393             gdk_threads_add_timeout (AUTO_EXPAND_TIMEOUT, open_row_timeout, tree_view);
7394         }
7395       else
7396         {
7397           add_scroll_timeout (tree_view);
7398         }
7399
7400       if (target == gdk_atom_intern_static_string ("GTK_TREE_MODEL_ROW"))
7401         {
7402           /* Request data so we can use the source row when
7403            * determining whether to accept the drop
7404            */
7405           set_status_pending (context, suggested_action);
7406           gtk_drag_get_data (widget, context, target, time);
7407         }
7408       else
7409         {
7410           set_status_pending (context, 0);
7411           gdk_drag_status (context, suggested_action, time);
7412         }
7413     }
7414
7415   if (path)
7416     gtk_tree_path_free (path);
7417
7418   return TRUE;
7419 }
7420
7421
7422 static gboolean
7423 gtk_tree_view_drag_drop (GtkWidget        *widget,
7424                          GdkDragContext   *context,
7425                          /* coordinates relative to the widget */
7426                          gint              x,
7427                          gint              y,
7428                          guint             time)
7429 {
7430   GtkTreeView *tree_view;
7431   GtkTreePath *path;
7432   GdkDragAction suggested_action = 0;
7433   GdkAtom target = GDK_NONE;
7434   TreeViewDragInfo *di;
7435   GtkTreeModel *model;
7436   gboolean path_down_mode;
7437   gboolean drop_append_mode;
7438
7439   tree_view = GTK_TREE_VIEW (widget);
7440
7441   model = gtk_tree_view_get_model (tree_view);
7442
7443   remove_scroll_timeout (GTK_TREE_VIEW (widget));
7444   remove_open_timeout (GTK_TREE_VIEW (widget));
7445
7446   di = get_info (tree_view);
7447
7448   if (di == NULL)
7449     return FALSE;
7450
7451   if (!check_model_dnd (model, GTK_TYPE_TREE_DRAG_DEST, "drag_drop"))
7452     return FALSE;
7453
7454   if (!set_destination_row (tree_view, context, x, y, &suggested_action, &target))
7455     return FALSE;
7456
7457   path = get_logical_dest_row (tree_view, &path_down_mode, &drop_append_mode);
7458
7459   if (target != GDK_NONE && path != NULL)
7460     {
7461       /* in case a motion had requested drag data, change things so we
7462        * treat drag data receives as a drop.
7463        */
7464       set_status_pending (context, 0);
7465       set_dest_row (context, model, path,
7466                     path_down_mode, tree_view->priv->empty_view_drop,
7467                     drop_append_mode);
7468     }
7469
7470   if (path)
7471     gtk_tree_path_free (path);
7472
7473   /* Unset this thing */
7474   gtk_tree_view_set_drag_dest_row (GTK_TREE_VIEW (widget),
7475                                    NULL,
7476                                    GTK_TREE_VIEW_DROP_BEFORE);
7477
7478   if (target != GDK_NONE)
7479     {
7480       gtk_drag_get_data (widget, context, target, time);
7481       return TRUE;
7482     }
7483   else
7484     return FALSE;
7485 }
7486
7487 static void
7488 gtk_tree_view_drag_data_received (GtkWidget        *widget,
7489                                   GdkDragContext   *context,
7490                                   /* coordinates relative to the widget */
7491                                   gint              x,
7492                                   gint              y,
7493                                   GtkSelectionData *selection_data,
7494                                   guint             info,
7495                                   guint             time)
7496 {
7497   GtkTreePath *path;
7498   TreeViewDragInfo *di;
7499   gboolean accepted = FALSE;
7500   GtkTreeModel *model;
7501   GtkTreeView *tree_view;
7502   GtkTreePath *dest_row;
7503   GdkDragAction suggested_action;
7504   gboolean path_down_mode;
7505   gboolean drop_append_mode;
7506
7507   tree_view = GTK_TREE_VIEW (widget);
7508
7509   model = gtk_tree_view_get_model (tree_view);
7510
7511   if (!check_model_dnd (model, GTK_TYPE_TREE_DRAG_DEST, "drag_data_received"))
7512     return;
7513
7514   di = get_info (tree_view);
7515
7516   if (di == NULL)
7517     return;
7518
7519   suggested_action = get_status_pending (context);
7520
7521   if (suggested_action)
7522     {
7523       /* We are getting this data due to a request in drag_motion,
7524        * rather than due to a request in drag_drop, so we are just
7525        * supposed to call drag_status, not actually paste in the
7526        * data.
7527        */
7528       path = get_logical_dest_row (tree_view, &path_down_mode,
7529                                    &drop_append_mode);
7530
7531       if (path == NULL)
7532         suggested_action = 0;
7533       else if (path_down_mode)
7534         gtk_tree_path_down (path);
7535
7536       if (suggested_action)
7537         {
7538           if (!gtk_tree_drag_dest_row_drop_possible (GTK_TREE_DRAG_DEST (model),
7539                                                      path,
7540                                                      selection_data))
7541             {
7542               if (path_down_mode)
7543                 {
7544                   path_down_mode = FALSE;
7545                   gtk_tree_path_up (path);
7546
7547                   if (!gtk_tree_drag_dest_row_drop_possible (GTK_TREE_DRAG_DEST (model),
7548                                                              path,
7549                                                              selection_data))
7550                     suggested_action = 0;
7551                 }
7552               else
7553                 suggested_action = 0;
7554             }
7555         }
7556
7557       gdk_drag_status (context, suggested_action, time);
7558
7559       if (path)
7560         gtk_tree_path_free (path);
7561
7562       /* If you can't drop, remove user drop indicator until the next motion */
7563       if (suggested_action == 0)
7564         gtk_tree_view_set_drag_dest_row (GTK_TREE_VIEW (widget),
7565                                          NULL,
7566                                          GTK_TREE_VIEW_DROP_BEFORE);
7567
7568       return;
7569     }
7570
7571   dest_row = get_dest_row (context, &path_down_mode);
7572
7573   if (dest_row == NULL)
7574     return;
7575
7576   if (selection_data->length >= 0)
7577     {
7578       if (path_down_mode)
7579         {
7580           gtk_tree_path_down (dest_row);
7581           if (!gtk_tree_drag_dest_row_drop_possible (GTK_TREE_DRAG_DEST (model),
7582                                                      dest_row, selection_data))
7583             gtk_tree_path_up (dest_row);
7584         }
7585     }
7586
7587   if (selection_data->length >= 0)
7588     {
7589       if (gtk_tree_drag_dest_drag_data_received (GTK_TREE_DRAG_DEST (model),
7590                                                  dest_row,
7591                                                  selection_data))
7592         accepted = TRUE;
7593     }
7594
7595   gtk_drag_finish (context,
7596                    accepted,
7597                    (context->action == GDK_ACTION_MOVE),
7598                    time);
7599
7600   if (gtk_tree_path_get_depth (dest_row) == 1
7601       && gtk_tree_path_get_indices (dest_row)[0] == 0)
7602     {
7603       /* special special case drag to "0", scroll to first item */
7604       if (!tree_view->priv->scroll_to_path)
7605         gtk_tree_view_scroll_to_cell (tree_view, dest_row, NULL, FALSE, 0.0, 0.0);
7606     }
7607
7608   gtk_tree_path_free (dest_row);
7609
7610   /* drop dest_row */
7611   set_dest_row (context, NULL, NULL, FALSE, FALSE, FALSE);
7612 }
7613
7614
7615
7616 /* GtkContainer Methods
7617  */
7618
7619
7620 static void
7621 gtk_tree_view_remove (GtkContainer *container,
7622                       GtkWidget    *widget)
7623 {
7624   GtkTreeView *tree_view = GTK_TREE_VIEW (container);
7625   GtkTreeViewChild *child = NULL;
7626   GList *tmp_list;
7627
7628   tmp_list = tree_view->priv->children;
7629   while (tmp_list)
7630     {
7631       child = tmp_list->data;
7632       if (child->widget == widget)
7633         {
7634           gtk_widget_unparent (widget);
7635
7636           tree_view->priv->children = g_list_remove_link (tree_view->priv->children, tmp_list);
7637           g_list_free_1 (tmp_list);
7638           g_slice_free (GtkTreeViewChild, child);
7639           return;
7640         }
7641
7642       tmp_list = tmp_list->next;
7643     }
7644
7645   tmp_list = tree_view->priv->columns;
7646
7647   while (tmp_list)
7648     {
7649       GtkTreeViewColumn *column;
7650       column = tmp_list->data;
7651       if (column->button == widget)
7652         {
7653           gtk_widget_unparent (widget);
7654           return;
7655         }
7656       tmp_list = tmp_list->next;
7657     }
7658 }
7659
7660 static void
7661 gtk_tree_view_forall (GtkContainer *container,
7662                       gboolean      include_internals,
7663                       GtkCallback   callback,
7664                       gpointer      callback_data)
7665 {
7666   GtkTreeView *tree_view = GTK_TREE_VIEW (container);
7667   GtkTreeViewChild *child = NULL;
7668   GtkTreeViewColumn *column;
7669   GList *tmp_list;
7670
7671   tmp_list = tree_view->priv->children;
7672   while (tmp_list)
7673     {
7674       child = tmp_list->data;
7675       tmp_list = tmp_list->next;
7676
7677       (* callback) (child->widget, callback_data);
7678     }
7679   if (include_internals == FALSE)
7680     return;
7681
7682   for (tmp_list = tree_view->priv->columns; tmp_list; tmp_list = tmp_list->next)
7683     {
7684       column = tmp_list->data;
7685
7686       if (column->button)
7687         (* callback) (column->button, callback_data);
7688     }
7689 }
7690
7691 /* Returns TRUE if the treeview contains no "special" (editable or activatable)
7692  * cells. If so we draw one big row-spanning focus rectangle.
7693  */
7694 static gboolean
7695 gtk_tree_view_has_special_cell (GtkTreeView *tree_view)
7696 {
7697   GList *list;
7698
7699   for (list = tree_view->priv->columns; list; list = list->next)
7700     {
7701       if (!((GtkTreeViewColumn *)list->data)->visible)
7702         continue;
7703       if (_gtk_tree_view_column_count_special_cells (list->data))
7704         return TRUE;
7705     }
7706
7707   return FALSE;
7708 }
7709
7710 static void
7711 column_sizing_notify (GObject    *object,
7712                       GParamSpec *pspec,
7713                       gpointer    data)
7714 {
7715   GtkTreeViewColumn *c = GTK_TREE_VIEW_COLUMN (object);
7716
7717   if (gtk_tree_view_column_get_sizing (c) != GTK_TREE_VIEW_COLUMN_FIXED)
7718     /* disable fixed height mode */
7719     g_object_set (data, "fixed-height-mode", FALSE, NULL);
7720 }
7721
7722 /**
7723  * gtk_tree_view_set_fixed_height_mode:
7724  * @tree_view: a #GtkTreeView
7725  * @enable: %TRUE to enable fixed height mode
7726  *
7727  * Enables or disables the fixed height mode of @tree_view.
7728  * Fixed height mode speeds up #GtkTreeView by assuming that all
7729  * rows have the same height.
7730  * Only enable this option if all rows are the same height and all
7731  * columns are of type %GTK_TREE_VIEW_COLUMN_FIXED.
7732  *
7733  * Since: 2.6
7734  **/
7735 void
7736 gtk_tree_view_set_fixed_height_mode (GtkTreeView *tree_view,
7737                                      gboolean     enable)
7738 {
7739   GList *l;
7740
7741   enable = enable != FALSE;
7742
7743   if (enable == tree_view->priv->fixed_height_mode)
7744     return;
7745
7746   if (!enable)
7747     {
7748       tree_view->priv->fixed_height_mode = 0;
7749       tree_view->priv->fixed_height = -1;
7750
7751       /* force a revalidation */
7752       install_presize_handler (tree_view);
7753     }
7754   else
7755     {
7756       /* make sure all columns are of type FIXED */
7757       for (l = tree_view->priv->columns; l; l = l->next)
7758         {
7759           GtkTreeViewColumn *c = l->data;
7760
7761           g_return_if_fail (gtk_tree_view_column_get_sizing (c) == GTK_TREE_VIEW_COLUMN_FIXED);
7762         }
7763
7764       /* yes, we really have to do this is in a separate loop */
7765       for (l = tree_view->priv->columns; l; l = l->next)
7766         g_signal_connect (l->data, "notify::sizing",
7767                           G_CALLBACK (column_sizing_notify), tree_view);
7768
7769       tree_view->priv->fixed_height_mode = 1;
7770       tree_view->priv->fixed_height = -1;
7771
7772       if (tree_view->priv->tree)
7773         initialize_fixed_height_mode (tree_view);
7774     }
7775
7776   g_object_notify (G_OBJECT (tree_view), "fixed-height-mode");
7777 }
7778
7779 /**
7780  * gtk_tree_view_get_fixed_height_mode:
7781  * @tree_view: a #GtkTreeView
7782  *
7783  * Returns whether fixed height mode is turned on for @tree_view.
7784  *
7785  * Return value: %TRUE if @tree_view is in fixed height mode
7786  *
7787  * Since: 2.6
7788  **/
7789 gboolean
7790 gtk_tree_view_get_fixed_height_mode (GtkTreeView *tree_view)
7791 {
7792   return tree_view->priv->fixed_height_mode;
7793 }
7794
7795 /* Returns TRUE if the focus is within the headers, after the focus operation is
7796  * done
7797  */
7798 static gboolean
7799 gtk_tree_view_header_focus (GtkTreeView      *tree_view,
7800                             GtkDirectionType  dir,
7801                             gboolean          clamp_column_visible)
7802 {
7803   GtkWidget *focus_child;
7804
7805   GList *last_column, *first_column;
7806   GList *tmp_list;
7807   gboolean rtl;
7808
7809   if (! GTK_TREE_VIEW_FLAG_SET (tree_view, GTK_TREE_VIEW_HEADERS_VISIBLE))
7810     return FALSE;
7811
7812   focus_child = GTK_CONTAINER (tree_view)->focus_child;
7813
7814   first_column = tree_view->priv->columns;
7815   while (first_column)
7816     {
7817       if (gtk_widget_get_can_focus (GTK_TREE_VIEW_COLUMN (first_column->data)->button) &&
7818           GTK_TREE_VIEW_COLUMN (first_column->data)->visible &&
7819           (GTK_TREE_VIEW_COLUMN (first_column->data)->clickable ||
7820            GTK_TREE_VIEW_COLUMN (first_column->data)->reorderable))
7821         break;
7822       first_column = first_column->next;
7823     }
7824
7825   /* No headers are visible, or are focusable.  We can't focus in or out.
7826    */
7827   if (first_column == NULL)
7828     return FALSE;
7829
7830   last_column = g_list_last (tree_view->priv->columns);
7831   while (last_column)
7832     {
7833       if (gtk_widget_get_can_focus (GTK_TREE_VIEW_COLUMN (last_column->data)->button) &&
7834           GTK_TREE_VIEW_COLUMN (last_column->data)->visible &&
7835           (GTK_TREE_VIEW_COLUMN (last_column->data)->clickable ||
7836            GTK_TREE_VIEW_COLUMN (last_column->data)->reorderable))
7837         break;
7838       last_column = last_column->prev;
7839     }
7840
7841
7842   rtl = (gtk_widget_get_direction (GTK_WIDGET (tree_view)) == GTK_TEXT_DIR_RTL);
7843
7844   switch (dir)
7845     {
7846     case GTK_DIR_TAB_BACKWARD:
7847     case GTK_DIR_TAB_FORWARD:
7848     case GTK_DIR_UP:
7849     case GTK_DIR_DOWN:
7850       if (focus_child == NULL)
7851         {
7852           if (tree_view->priv->focus_column != NULL &&
7853               gtk_widget_get_can_focus (tree_view->priv->focus_column->button))
7854             focus_child = tree_view->priv->focus_column->button;
7855           else
7856             focus_child = GTK_TREE_VIEW_COLUMN (first_column->data)->button;
7857           gtk_widget_grab_focus (focus_child);
7858           break;
7859         }
7860       return FALSE;
7861
7862     case GTK_DIR_LEFT:
7863     case GTK_DIR_RIGHT:
7864       if (focus_child == NULL)
7865         {
7866           if (tree_view->priv->focus_column != NULL)
7867             focus_child = tree_view->priv->focus_column->button;
7868           else if (dir == GTK_DIR_LEFT)
7869             focus_child = GTK_TREE_VIEW_COLUMN (last_column->data)->button;
7870           else
7871             focus_child = GTK_TREE_VIEW_COLUMN (first_column->data)->button;
7872           gtk_widget_grab_focus (focus_child);
7873           break;
7874         }
7875
7876       if (gtk_widget_child_focus (focus_child, dir))
7877         {
7878           /* The focus moves inside the button. */
7879           /* This is probably a great example of bad UI */
7880           break;
7881         }
7882
7883       /* We need to move the focus among the row of buttons. */
7884       for (tmp_list = tree_view->priv->columns; tmp_list; tmp_list = tmp_list->next)
7885         if (GTK_TREE_VIEW_COLUMN (tmp_list->data)->button == focus_child)
7886           break;
7887
7888       if ((tmp_list == first_column && dir == (rtl ? GTK_DIR_RIGHT : GTK_DIR_LEFT))
7889           || (tmp_list == last_column && dir == (rtl ? GTK_DIR_LEFT : GTK_DIR_RIGHT)))
7890         {
7891           gtk_widget_error_bell (GTK_WIDGET (tree_view));
7892           break;
7893         }
7894
7895       while (tmp_list)
7896         {
7897           GtkTreeViewColumn *column;
7898
7899           if (dir == (rtl ? GTK_DIR_LEFT : GTK_DIR_RIGHT))
7900             tmp_list = tmp_list->next;
7901           else
7902             tmp_list = tmp_list->prev;
7903
7904           if (tmp_list == NULL)
7905             {
7906               g_warning ("Internal button not found");
7907               break;
7908             }
7909           column = tmp_list->data;
7910           if (column->button &&
7911               column->visible &&
7912               gtk_widget_get_can_focus (column->button))
7913             {
7914               focus_child = column->button;
7915               gtk_widget_grab_focus (column->button);
7916               break;
7917             }
7918         }
7919       break;
7920     default:
7921       g_assert_not_reached ();
7922       break;
7923     }
7924
7925   /* if focus child is non-null, we assume it's been set to the current focus child
7926    */
7927   if (focus_child)
7928     {
7929       for (tmp_list = tree_view->priv->columns; tmp_list; tmp_list = tmp_list->next)
7930         if (GTK_TREE_VIEW_COLUMN (tmp_list->data)->button == focus_child)
7931           {
7932             tree_view->priv->focus_column = GTK_TREE_VIEW_COLUMN (tmp_list->data);
7933             break;
7934           }
7935
7936       if (clamp_column_visible)
7937         {
7938           gtk_tree_view_clamp_column_visible (tree_view,
7939                                               tree_view->priv->focus_column,
7940                                               FALSE);
7941         }
7942     }
7943
7944   return (focus_child != NULL);
7945 }
7946
7947 /* This function returns in 'path' the first focusable path, if the given path
7948  * is already focusable, it's the returned one.
7949  */
7950 static gboolean
7951 search_first_focusable_path (GtkTreeView  *tree_view,
7952                              GtkTreePath **path,
7953                              gboolean      search_forward,
7954                              GtkRBTree   **new_tree,
7955                              GtkRBNode   **new_node)
7956 {
7957   GtkRBTree *tree = NULL;
7958   GtkRBNode *node = NULL;
7959
7960   if (!path || !*path)
7961     return FALSE;
7962
7963   _gtk_tree_view_find_node (tree_view, *path, &tree, &node);
7964
7965   if (!tree || !node)
7966     return FALSE;
7967
7968   while (node && row_is_separator (tree_view, NULL, *path))
7969     {
7970       if (search_forward)
7971         _gtk_rbtree_next_full (tree, node, &tree, &node);
7972       else
7973         _gtk_rbtree_prev_full (tree, node, &tree, &node);
7974
7975       if (*path)
7976         gtk_tree_path_free (*path);
7977
7978       if (node)
7979         *path = _gtk_tree_view_find_path (tree_view, tree, node);
7980       else
7981         *path = NULL;
7982     }
7983
7984   if (new_tree)
7985     *new_tree = tree;
7986
7987   if (new_node)
7988     *new_node = node;
7989
7990   return (*path != NULL);
7991 }
7992
7993 static gint
7994 gtk_tree_view_focus (GtkWidget        *widget,
7995                      GtkDirectionType  direction)
7996 {
7997   GtkTreeView *tree_view = GTK_TREE_VIEW (widget);
7998   GtkContainer *container = GTK_CONTAINER (widget);
7999   GtkWidget *focus_child;
8000
8001   if (!gtk_widget_is_sensitive (widget) || !gtk_widget_get_can_focus (widget))
8002     return FALSE;
8003
8004   focus_child = container->focus_child;
8005
8006   gtk_tree_view_stop_editing (GTK_TREE_VIEW (widget), FALSE);
8007   /* Case 1.  Headers currently have focus. */
8008   if (focus_child)
8009     {
8010       switch (direction)
8011         {
8012         case GTK_DIR_LEFT:
8013         case GTK_DIR_RIGHT:
8014           gtk_tree_view_header_focus (tree_view, direction, TRUE);
8015           return TRUE;
8016         case GTK_DIR_TAB_BACKWARD:
8017         case GTK_DIR_UP:
8018           return FALSE;
8019         case GTK_DIR_TAB_FORWARD:
8020         case GTK_DIR_DOWN:
8021           gtk_widget_grab_focus (widget);
8022           return TRUE;
8023         default:
8024           g_assert_not_reached ();
8025           return FALSE;
8026         }
8027     }
8028
8029   /* Case 2. We don't have focus at all. */
8030   if (!gtk_widget_has_focus (widget))
8031     {
8032       if (!gtk_tree_view_header_focus (tree_view, direction, FALSE))
8033         gtk_widget_grab_focus (widget);
8034       return TRUE;
8035     }
8036
8037   /* Case 3. We have focus already. */
8038   if (direction == GTK_DIR_TAB_BACKWARD)
8039     return (gtk_tree_view_header_focus (tree_view, direction, FALSE));
8040   else if (direction == GTK_DIR_TAB_FORWARD)
8041     return FALSE;
8042
8043   /* Other directions caught by the keybindings */
8044   gtk_widget_grab_focus (widget);
8045   return TRUE;
8046 }
8047
8048 static void
8049 gtk_tree_view_grab_focus (GtkWidget *widget)
8050 {
8051   GTK_WIDGET_CLASS (gtk_tree_view_parent_class)->grab_focus (widget);
8052
8053   gtk_tree_view_focus_to_cursor (GTK_TREE_VIEW (widget));
8054 }
8055
8056 static void
8057 gtk_tree_view_style_set (GtkWidget *widget,
8058                          GtkStyle *previous_style)
8059 {
8060   GtkTreeView *tree_view = GTK_TREE_VIEW (widget);
8061   GList *list;
8062   GtkTreeViewColumn *column;
8063
8064   if (GTK_WIDGET_REALIZED (widget))
8065     {
8066       gdk_window_set_back_pixmap (widget->window, NULL, FALSE);
8067       gdk_window_set_background (tree_view->priv->bin_window, &widget->style->base[widget->state]);
8068       gtk_style_set_background (widget->style, tree_view->priv->header_window, GTK_STATE_NORMAL);
8069
8070       gtk_tree_view_set_grid_lines (tree_view, tree_view->priv->grid_lines);
8071       gtk_tree_view_set_enable_tree_lines (tree_view, tree_view->priv->tree_lines_enabled);
8072     }
8073
8074   gtk_widget_style_get (widget,
8075                         "expander-size", &tree_view->priv->expander_size,
8076                         NULL);
8077   tree_view->priv->expander_size += EXPANDER_EXTRA_PADDING;
8078
8079   for (list = tree_view->priv->columns; list; list = list->next)
8080     {
8081       column = list->data;
8082       _gtk_tree_view_column_cell_set_dirty (column, TRUE);
8083     }
8084
8085   tree_view->priv->fixed_height = -1;
8086   _gtk_rbtree_mark_invalid (tree_view->priv->tree);
8087
8088   gtk_widget_queue_resize (widget);
8089 }
8090
8091
8092 static void
8093 gtk_tree_view_set_focus_child (GtkContainer *container,
8094                                GtkWidget    *child)
8095 {
8096   GtkTreeView *tree_view = GTK_TREE_VIEW (container);
8097   GList *list;
8098
8099   for (list = tree_view->priv->columns; list; list = list->next)
8100     {
8101       if (GTK_TREE_VIEW_COLUMN (list->data)->button == child)
8102         {
8103           tree_view->priv->focus_column = GTK_TREE_VIEW_COLUMN (list->data);
8104           break;
8105         }
8106     }
8107
8108   GTK_CONTAINER_CLASS (gtk_tree_view_parent_class)->set_focus_child (container, child);
8109 }
8110
8111 static void
8112 gtk_tree_view_set_adjustments (GtkTreeView   *tree_view,
8113                                GtkAdjustment *hadj,
8114                                GtkAdjustment *vadj)
8115 {
8116   gboolean need_adjust = FALSE;
8117
8118   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
8119
8120   if (hadj)
8121     g_return_if_fail (GTK_IS_ADJUSTMENT (hadj));
8122   else
8123     hadj = GTK_ADJUSTMENT (gtk_adjustment_new (0.0, 0.0, 0.0, 0.0, 0.0, 0.0));
8124   if (vadj)
8125     g_return_if_fail (GTK_IS_ADJUSTMENT (vadj));
8126   else
8127     vadj = GTK_ADJUSTMENT (gtk_adjustment_new (0.0, 0.0, 0.0, 0.0, 0.0, 0.0));
8128
8129   if (tree_view->priv->hadjustment && (tree_view->priv->hadjustment != hadj))
8130     {
8131       g_signal_handlers_disconnect_by_func (tree_view->priv->hadjustment,
8132                                             gtk_tree_view_adjustment_changed,
8133                                             tree_view);
8134       g_object_unref (tree_view->priv->hadjustment);
8135     }
8136
8137   if (tree_view->priv->vadjustment && (tree_view->priv->vadjustment != vadj))
8138     {
8139       g_signal_handlers_disconnect_by_func (tree_view->priv->vadjustment,
8140                                             gtk_tree_view_adjustment_changed,
8141                                             tree_view);
8142       g_object_unref (tree_view->priv->vadjustment);
8143     }
8144
8145   if (tree_view->priv->hadjustment != hadj)
8146     {
8147       tree_view->priv->hadjustment = hadj;
8148       g_object_ref_sink (tree_view->priv->hadjustment);
8149
8150       g_signal_connect (tree_view->priv->hadjustment, "value-changed",
8151                         G_CALLBACK (gtk_tree_view_adjustment_changed),
8152                         tree_view);
8153       need_adjust = TRUE;
8154     }
8155
8156   if (tree_view->priv->vadjustment != vadj)
8157     {
8158       tree_view->priv->vadjustment = vadj;
8159       g_object_ref_sink (tree_view->priv->vadjustment);
8160
8161       g_signal_connect (tree_view->priv->vadjustment, "value-changed",
8162                         G_CALLBACK (gtk_tree_view_adjustment_changed),
8163                         tree_view);
8164       need_adjust = TRUE;
8165     }
8166
8167   if (need_adjust)
8168     gtk_tree_view_adjustment_changed (NULL, tree_view);
8169 }
8170
8171
8172 static gboolean
8173 gtk_tree_view_real_move_cursor (GtkTreeView       *tree_view,
8174                                 GtkMovementStep    step,
8175                                 gint               count)
8176 {
8177   GdkModifierType state;
8178
8179   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), FALSE);
8180   g_return_val_if_fail (step == GTK_MOVEMENT_LOGICAL_POSITIONS ||
8181                         step == GTK_MOVEMENT_VISUAL_POSITIONS ||
8182                         step == GTK_MOVEMENT_DISPLAY_LINES ||
8183                         step == GTK_MOVEMENT_PAGES ||
8184                         step == GTK_MOVEMENT_BUFFER_ENDS, FALSE);
8185
8186   if (tree_view->priv->tree == NULL)
8187     return FALSE;
8188   if (!gtk_widget_has_focus (GTK_WIDGET (tree_view)))
8189     return FALSE;
8190
8191   gtk_tree_view_stop_editing (tree_view, FALSE);
8192   GTK_TREE_VIEW_SET_FLAG (tree_view, GTK_TREE_VIEW_DRAW_KEYFOCUS);
8193   gtk_widget_grab_focus (GTK_WIDGET (tree_view));
8194
8195   if (gtk_get_current_event_state (&state))
8196     {
8197       if ((state & GDK_CONTROL_MASK) == GDK_CONTROL_MASK)
8198         tree_view->priv->ctrl_pressed = TRUE;
8199       if ((state & GDK_SHIFT_MASK) == GDK_SHIFT_MASK)
8200         tree_view->priv->shift_pressed = TRUE;
8201     }
8202   /* else we assume not pressed */
8203
8204   switch (step)
8205     {
8206       /* currently we make no distinction.  When we go bi-di, we need to */
8207     case GTK_MOVEMENT_LOGICAL_POSITIONS:
8208     case GTK_MOVEMENT_VISUAL_POSITIONS:
8209       gtk_tree_view_move_cursor_left_right (tree_view, count);
8210       break;
8211     case GTK_MOVEMENT_DISPLAY_LINES:
8212       gtk_tree_view_move_cursor_up_down (tree_view, count);
8213       break;
8214     case GTK_MOVEMENT_PAGES:
8215       gtk_tree_view_move_cursor_page_up_down (tree_view, count);
8216       break;
8217     case GTK_MOVEMENT_BUFFER_ENDS:
8218       gtk_tree_view_move_cursor_start_end (tree_view, count);
8219       break;
8220     default:
8221       g_assert_not_reached ();
8222     }
8223
8224   tree_view->priv->ctrl_pressed = FALSE;
8225   tree_view->priv->shift_pressed = FALSE;
8226
8227   return TRUE;
8228 }
8229
8230 static void
8231 gtk_tree_view_put (GtkTreeView *tree_view,
8232                    GtkWidget   *child_widget,
8233                    /* in bin_window coordinates */
8234                    gint         x,
8235                    gint         y,
8236                    gint         width,
8237                    gint         height)
8238 {
8239   GtkTreeViewChild *child;
8240
8241   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
8242   g_return_if_fail (GTK_IS_WIDGET (child_widget));
8243
8244   child = g_slice_new (GtkTreeViewChild);
8245
8246   child->widget = child_widget;
8247   child->x = x;
8248   child->y = y;
8249   child->width = width;
8250   child->height = height;
8251
8252   tree_view->priv->children = g_list_append (tree_view->priv->children, child);
8253
8254   if (GTK_WIDGET_REALIZED (tree_view))
8255     gtk_widget_set_parent_window (child->widget, tree_view->priv->bin_window);
8256
8257   gtk_widget_set_parent (child_widget, GTK_WIDGET (tree_view));
8258 }
8259
8260 void
8261 _gtk_tree_view_child_move_resize (GtkTreeView *tree_view,
8262                                   GtkWidget   *widget,
8263                                   /* in tree coordinates */
8264                                   gint         x,
8265                                   gint         y,
8266                                   gint         width,
8267                                   gint         height)
8268 {
8269   GtkTreeViewChild *child = NULL;
8270   GList *list;
8271   GdkRectangle allocation;
8272
8273   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
8274   g_return_if_fail (GTK_IS_WIDGET (widget));
8275
8276   for (list = tree_view->priv->children; list; list = list->next)
8277     {
8278       if (((GtkTreeViewChild *)list->data)->widget == widget)
8279         {
8280           child = list->data;
8281           break;
8282         }
8283     }
8284   if (child == NULL)
8285     return;
8286
8287   allocation.x = child->x = x;
8288   allocation.y = child->y = y;
8289   allocation.width = child->width = width;
8290   allocation.height = child->height = height;
8291
8292   if (GTK_WIDGET_REALIZED (widget))
8293     gtk_widget_size_allocate (widget, &allocation);
8294 }
8295
8296
8297 /* TreeModel Callbacks
8298  */
8299
8300 static void
8301 gtk_tree_view_row_changed (GtkTreeModel *model,
8302                            GtkTreePath  *path,
8303                            GtkTreeIter  *iter,
8304                            gpointer      data)
8305 {
8306   GtkTreeView *tree_view = (GtkTreeView *)data;
8307   GtkRBTree *tree;
8308   GtkRBNode *node;
8309   gboolean free_path = FALSE;
8310   GList *list;
8311   GtkTreePath *cursor_path;
8312
8313   g_return_if_fail (path != NULL || iter != NULL);
8314
8315   if (tree_view->priv->cursor != NULL)
8316     cursor_path = gtk_tree_row_reference_get_path (tree_view->priv->cursor);
8317   else
8318     cursor_path = NULL;
8319
8320   if (tree_view->priv->edited_column &&
8321       (cursor_path == NULL || gtk_tree_path_compare (cursor_path, path) == 0))
8322     gtk_tree_view_stop_editing (tree_view, TRUE);
8323
8324   if (cursor_path != NULL)
8325     gtk_tree_path_free (cursor_path);
8326
8327   if (path == NULL)
8328     {
8329       path = gtk_tree_model_get_path (model, iter);
8330       free_path = TRUE;
8331     }
8332   else if (iter == NULL)
8333     gtk_tree_model_get_iter (model, iter, path);
8334
8335   if (_gtk_tree_view_find_node (tree_view,
8336                                 path,
8337                                 &tree,
8338                                 &node))
8339     /* We aren't actually showing the node */
8340     goto done;
8341
8342   if (tree == NULL)
8343     goto done;
8344
8345   if (tree_view->priv->fixed_height_mode
8346       && tree_view->priv->fixed_height >= 0)
8347     {
8348       _gtk_rbtree_node_set_height (tree, node, tree_view->priv->fixed_height);
8349       if (GTK_WIDGET_REALIZED (tree_view))
8350         gtk_tree_view_node_queue_redraw (tree_view, tree, node);
8351     }
8352   else
8353     {
8354       _gtk_rbtree_node_mark_invalid (tree, node);
8355       for (list = tree_view->priv->columns; list; list = list->next)
8356         {
8357           GtkTreeViewColumn *column;
8358
8359           column = list->data;
8360           if (! column->visible)
8361             continue;
8362
8363           if (column->column_type == GTK_TREE_VIEW_COLUMN_AUTOSIZE)
8364             {
8365               _gtk_tree_view_column_cell_set_dirty (column, TRUE);
8366             }
8367         }
8368     }
8369
8370  done:
8371   if (GTK_WIDGET_REALIZED (tree_view) && !tree_view->priv->fixed_height_mode)
8372     install_presize_handler (tree_view);
8373   if (free_path)
8374     gtk_tree_path_free (path);
8375 }
8376
8377 static void
8378 gtk_tree_view_row_inserted (GtkTreeModel *model,
8379                             GtkTreePath  *path,
8380                             GtkTreeIter  *iter,
8381                             gpointer      data)
8382 {
8383   GtkTreeView *tree_view = (GtkTreeView *) data;
8384   gint *indices;
8385   GtkRBTree *tmptree, *tree;
8386   GtkRBNode *tmpnode = NULL;
8387   gint depth;
8388   gint i = 0;
8389   gint height;
8390   gboolean free_path = FALSE;
8391   gboolean node_visible = TRUE;
8392
8393   g_return_if_fail (path != NULL || iter != NULL);
8394
8395   if (tree_view->priv->fixed_height_mode
8396       && tree_view->priv->fixed_height >= 0)
8397     height = tree_view->priv->fixed_height;
8398   else
8399     height = 0;
8400
8401   if (path == NULL)
8402     {
8403       path = gtk_tree_model_get_path (model, iter);
8404       free_path = TRUE;
8405     }
8406   else if (iter == NULL)
8407     gtk_tree_model_get_iter (model, iter, path);
8408
8409   if (tree_view->priv->tree == NULL)
8410     tree_view->priv->tree = _gtk_rbtree_new ();
8411
8412   tmptree = tree = tree_view->priv->tree;
8413
8414   /* Update all row-references */
8415   gtk_tree_row_reference_inserted (G_OBJECT (data), path);
8416   depth = gtk_tree_path_get_depth (path);
8417   indices = gtk_tree_path_get_indices (path);
8418
8419   /* First, find the parent tree */
8420   while (i < depth - 1)
8421     {
8422       if (tmptree == NULL)
8423         {
8424           /* We aren't showing the node */
8425           node_visible = FALSE;
8426           goto done;
8427         }
8428
8429       tmpnode = _gtk_rbtree_find_count (tmptree, indices[i] + 1);
8430       if (tmpnode == NULL)
8431         {
8432           g_warning ("A node was inserted with a parent that's not in the tree.\n" \
8433                      "This possibly means that a GtkTreeModel inserted a child node\n" \
8434                      "before the parent was inserted.");
8435           goto done;
8436         }
8437       else if (!GTK_RBNODE_FLAG_SET (tmpnode, GTK_RBNODE_IS_PARENT))
8438         {
8439           /* FIXME enforce correct behavior on model, probably */
8440           /* In theory, the model should have emitted has_child_toggled here.  We
8441            * try to catch it anyway, just to be safe, in case the model hasn't.
8442            */
8443           GtkTreePath *tmppath = _gtk_tree_view_find_path (tree_view,
8444                                                            tree,
8445                                                            tmpnode);
8446           gtk_tree_view_row_has_child_toggled (model, tmppath, NULL, data);
8447           gtk_tree_path_free (tmppath);
8448           goto done;
8449         }
8450
8451       tmptree = tmpnode->children;
8452       tree = tmptree;
8453       i++;
8454     }
8455
8456   if (tree == NULL)
8457     {
8458       node_visible = FALSE;
8459       goto done;
8460     }
8461
8462   /* ref the node */
8463   gtk_tree_model_ref_node (tree_view->priv->model, iter);
8464   if (indices[depth - 1] == 0)
8465     {
8466       tmpnode = _gtk_rbtree_find_count (tree, 1);
8467       tmpnode = _gtk_rbtree_insert_before (tree, tmpnode, height, FALSE);
8468     }
8469   else
8470     {
8471       tmpnode = _gtk_rbtree_find_count (tree, indices[depth - 1]);
8472       tmpnode = _gtk_rbtree_insert_after (tree, tmpnode, height, FALSE);
8473     }
8474
8475  done:
8476   if (height > 0)
8477     {
8478       if (tree)
8479         _gtk_rbtree_node_mark_valid (tree, tmpnode);
8480
8481       if (node_visible && node_is_visible (tree_view, tree, tmpnode))
8482         gtk_widget_queue_resize (GTK_WIDGET (tree_view));
8483       else
8484         gtk_widget_queue_resize_no_redraw (GTK_WIDGET (tree_view));
8485     }
8486   else
8487     install_presize_handler (tree_view);
8488   if (free_path)
8489     gtk_tree_path_free (path);
8490 }
8491
8492 static void
8493 gtk_tree_view_row_has_child_toggled (GtkTreeModel *model,
8494                                      GtkTreePath  *path,
8495                                      GtkTreeIter  *iter,
8496                                      gpointer      data)
8497 {
8498   GtkTreeView *tree_view = (GtkTreeView *)data;
8499   GtkTreeIter real_iter;
8500   gboolean has_child;
8501   GtkRBTree *tree;
8502   GtkRBNode *node;
8503   gboolean free_path = FALSE;
8504
8505   g_return_if_fail (path != NULL || iter != NULL);
8506
8507   if (iter)
8508     real_iter = *iter;
8509
8510   if (path == NULL)
8511     {
8512       path = gtk_tree_model_get_path (model, iter);
8513       free_path = TRUE;
8514     }
8515   else if (iter == NULL)
8516     gtk_tree_model_get_iter (model, &real_iter, path);
8517
8518   if (_gtk_tree_view_find_node (tree_view,
8519                                 path,
8520                                 &tree,
8521                                 &node))
8522     /* We aren't actually showing the node */
8523     goto done;
8524
8525   if (tree == NULL)
8526     goto done;
8527
8528   has_child = gtk_tree_model_iter_has_child (model, &real_iter);
8529   /* Sanity check.
8530    */
8531   if (GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_PARENT) == has_child)
8532     goto done;
8533
8534   if (has_child)
8535     GTK_RBNODE_SET_FLAG (node, GTK_RBNODE_IS_PARENT);
8536   else
8537     GTK_RBNODE_UNSET_FLAG (node, GTK_RBNODE_IS_PARENT);
8538
8539   if (has_child && GTK_TREE_VIEW_FLAG_SET (tree_view, GTK_TREE_VIEW_IS_LIST))
8540     {
8541       GTK_TREE_VIEW_UNSET_FLAG (tree_view, GTK_TREE_VIEW_IS_LIST);
8542       if (GTK_TREE_VIEW_FLAG_SET (tree_view, GTK_TREE_VIEW_SHOW_EXPANDERS))
8543         {
8544           GList *list;
8545
8546           for (list = tree_view->priv->columns; list; list = list->next)
8547             if (GTK_TREE_VIEW_COLUMN (list->data)->visible)
8548               {
8549                 GTK_TREE_VIEW_COLUMN (list->data)->dirty = TRUE;
8550                 _gtk_tree_view_column_cell_set_dirty (GTK_TREE_VIEW_COLUMN (list->data), TRUE);
8551                 break;
8552               }
8553         }
8554       gtk_widget_queue_resize (GTK_WIDGET (tree_view));
8555     }
8556   else
8557     {
8558       _gtk_tree_view_queue_draw_node (tree_view, tree, node, NULL);
8559     }
8560
8561  done:
8562   if (free_path)
8563     gtk_tree_path_free (path);
8564 }
8565
8566 static void
8567 count_children_helper (GtkRBTree *tree,
8568                        GtkRBNode *node,
8569                        gpointer   data)
8570 {
8571   if (node->children)
8572     _gtk_rbtree_traverse (node->children, node->children->root, G_POST_ORDER, count_children_helper, data);
8573   (*((gint *)data))++;
8574 }
8575
8576 static void
8577 check_selection_helper (GtkRBTree *tree,
8578                         GtkRBNode *node,
8579                         gpointer   data)
8580 {
8581   gint *value = (gint *)data;
8582
8583   *value = GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_SELECTED);
8584
8585   if (node->children && !*value)
8586     _gtk_rbtree_traverse (node->children, node->children->root, G_POST_ORDER, check_selection_helper, data);
8587 }
8588
8589 static void
8590 gtk_tree_view_row_deleted (GtkTreeModel *model,
8591                            GtkTreePath  *path,
8592                            gpointer      data)
8593 {
8594   GtkTreeView *tree_view = (GtkTreeView *)data;
8595   GtkRBTree *tree;
8596   GtkRBNode *node;
8597   GList *list;
8598   gint selection_changed = FALSE;
8599
8600   g_return_if_fail (path != NULL);
8601
8602   gtk_tree_row_reference_deleted (G_OBJECT (data), path);
8603
8604   if (_gtk_tree_view_find_node (tree_view, path, &tree, &node))
8605     return;
8606
8607   if (tree == NULL)
8608     return;
8609
8610   /* check if the selection has been changed */
8611   _gtk_rbtree_traverse (tree, node, G_POST_ORDER,
8612                         check_selection_helper, &selection_changed);
8613
8614   for (list = tree_view->priv->columns; list; list = list->next)
8615     if (((GtkTreeViewColumn *)list->data)->visible &&
8616         ((GtkTreeViewColumn *)list->data)->column_type == GTK_TREE_VIEW_COLUMN_AUTOSIZE)
8617       _gtk_tree_view_column_cell_set_dirty ((GtkTreeViewColumn *)list->data, TRUE);
8618
8619   /* Ensure we don't have a dangling pointer to a dead node */
8620   ensure_unprelighted (tree_view);
8621
8622   /* Cancel editting if we've started */
8623   gtk_tree_view_stop_editing (tree_view, TRUE);
8624
8625   /* If we have a node expanded/collapsed timeout, remove it */
8626   remove_expand_collapse_timeout (tree_view);
8627
8628   if (tree_view->priv->destroy_count_func)
8629     {
8630       gint child_count = 0;
8631       if (node->children)
8632         _gtk_rbtree_traverse (node->children, node->children->root, G_POST_ORDER, count_children_helper, &child_count);
8633       tree_view->priv->destroy_count_func (tree_view, path, child_count, tree_view->priv->destroy_count_data);
8634     }
8635
8636   if (tree->root->count == 1)
8637     {
8638       if (tree_view->priv->tree == tree)
8639         tree_view->priv->tree = NULL;
8640
8641       _gtk_rbtree_remove (tree);
8642     }
8643   else
8644     {
8645       _gtk_rbtree_remove_node (tree, node);
8646     }
8647
8648   if (! gtk_tree_row_reference_valid (tree_view->priv->top_row))
8649     {
8650       gtk_tree_row_reference_free (tree_view->priv->top_row);
8651       tree_view->priv->top_row = NULL;
8652     }
8653
8654   install_scroll_sync_handler (tree_view);
8655
8656   gtk_widget_queue_resize (GTK_WIDGET (tree_view));
8657
8658   if (selection_changed)
8659     g_signal_emit_by_name (tree_view->priv->selection, "changed");
8660 }
8661
8662 static void
8663 gtk_tree_view_rows_reordered (GtkTreeModel *model,
8664                               GtkTreePath  *parent,
8665                               GtkTreeIter  *iter,
8666                               gint         *new_order,
8667                               gpointer      data)
8668 {
8669   GtkTreeView *tree_view = GTK_TREE_VIEW (data);
8670   GtkRBTree *tree;
8671   GtkRBNode *node;
8672   gint len;
8673
8674   len = gtk_tree_model_iter_n_children (model, iter);
8675
8676   if (len < 2)
8677     return;
8678
8679   gtk_tree_row_reference_reordered (G_OBJECT (data),
8680                                     parent,
8681                                     iter,
8682                                     new_order);
8683
8684   if (_gtk_tree_view_find_node (tree_view,
8685                                 parent,
8686                                 &tree,
8687                                 &node))
8688     return;
8689
8690   /* We need to special case the parent path */
8691   if (tree == NULL)
8692     tree = tree_view->priv->tree;
8693   else
8694     tree = node->children;
8695
8696   if (tree == NULL)
8697     return;
8698
8699   if (tree_view->priv->edited_column)
8700     gtk_tree_view_stop_editing (tree_view, TRUE);
8701
8702   /* we need to be unprelighted */
8703   ensure_unprelighted (tree_view);
8704
8705   /* clear the timeout */
8706   cancel_arrow_animation (tree_view);
8707
8708   _gtk_rbtree_reorder (tree, new_order, len);
8709
8710   gtk_widget_queue_draw (GTK_WIDGET (tree_view));
8711
8712   gtk_tree_view_dy_to_top_row (tree_view);
8713 }
8714
8715
8716 /* Internal tree functions
8717  */
8718
8719
8720 static void
8721 gtk_tree_view_get_background_xrange (GtkTreeView       *tree_view,
8722                                      GtkRBTree         *tree,
8723                                      GtkTreeViewColumn *column,
8724                                      gint              *x1,
8725                                      gint              *x2)
8726 {
8727   GtkTreeViewColumn *tmp_column = NULL;
8728   gint total_width;
8729   GList *list;
8730   gboolean rtl;
8731
8732   if (x1)
8733     *x1 = 0;
8734
8735   if (x2)
8736     *x2 = 0;
8737
8738   rtl = (gtk_widget_get_direction (GTK_WIDGET (tree_view)) == GTK_TEXT_DIR_RTL);
8739
8740   total_width = 0;
8741   for (list = (rtl ? g_list_last (tree_view->priv->columns) : g_list_first (tree_view->priv->columns));
8742        list;
8743        list = (rtl ? list->prev : list->next))
8744     {
8745       tmp_column = list->data;
8746
8747       if (tmp_column == column)
8748         break;
8749
8750       if (tmp_column->visible)
8751         total_width += tmp_column->width;
8752     }
8753
8754   if (tmp_column != column)
8755     {
8756       g_warning (G_STRLOC": passed-in column isn't in the tree");
8757       return;
8758     }
8759
8760   if (x1)
8761     *x1 = total_width;
8762
8763   if (x2)
8764     {
8765       if (column->visible)
8766         *x2 = total_width + column->width;
8767       else
8768         *x2 = total_width; /* width of 0 */
8769     }
8770 }
8771 static void
8772 gtk_tree_view_get_arrow_xrange (GtkTreeView *tree_view,
8773                                 GtkRBTree   *tree,
8774                                 gint        *x1,
8775                                 gint        *x2)
8776 {
8777   gint x_offset = 0;
8778   GList *list;
8779   GtkTreeViewColumn *tmp_column = NULL;
8780   gint total_width;
8781   gboolean indent_expanders;
8782   gboolean rtl;
8783
8784   rtl = (gtk_widget_get_direction (GTK_WIDGET (tree_view)) == GTK_TEXT_DIR_RTL);
8785
8786   total_width = 0;
8787   for (list = (rtl ? g_list_last (tree_view->priv->columns) : g_list_first (tree_view->priv->columns));
8788        list;
8789        list = (rtl ? list->prev : list->next))
8790     {
8791       tmp_column = list->data;
8792
8793       if (gtk_tree_view_is_expander_column (tree_view, tmp_column))
8794         {
8795           if (rtl)
8796             x_offset = total_width + tmp_column->width - tree_view->priv->expander_size;
8797           else
8798             x_offset = total_width;
8799           break;
8800         }
8801
8802       if (tmp_column->visible)
8803         total_width += tmp_column->width;
8804     }
8805
8806   gtk_widget_style_get (GTK_WIDGET (tree_view),
8807                         "indent-expanders", &indent_expanders,
8808                         NULL);
8809
8810   if (indent_expanders)
8811     {
8812       if (rtl)
8813         x_offset -= tree_view->priv->expander_size * _gtk_rbtree_get_depth (tree);
8814       else
8815         x_offset += tree_view->priv->expander_size * _gtk_rbtree_get_depth (tree);
8816     }
8817
8818   *x1 = x_offset;
8819
8820   if (tmp_column && tmp_column->visible)
8821     /* +1 because x2 isn't included in the range. */
8822     *x2 = *x1 + tree_view->priv->expander_size + 1;
8823   else
8824     *x2 = *x1;
8825 }
8826
8827 static void
8828 gtk_tree_view_build_tree (GtkTreeView *tree_view,
8829                           GtkRBTree   *tree,
8830                           GtkTreeIter *iter,
8831                           gint         depth,
8832                           gboolean     recurse)
8833 {
8834   GtkRBNode *temp = NULL;
8835   GtkTreePath *path = NULL;
8836   gboolean is_list = GTK_TREE_VIEW_FLAG_SET (tree_view, GTK_TREE_VIEW_IS_LIST);
8837
8838   do
8839     {
8840       gtk_tree_model_ref_node (tree_view->priv->model, iter);
8841       temp = _gtk_rbtree_insert_after (tree, temp, 0, FALSE);
8842
8843       if (tree_view->priv->fixed_height > 0)
8844         {
8845           if (GTK_RBNODE_FLAG_SET (temp, GTK_RBNODE_INVALID))
8846             {
8847               _gtk_rbtree_node_set_height (tree, temp, tree_view->priv->fixed_height);
8848               _gtk_rbtree_node_mark_valid (tree, temp);
8849             }
8850         }
8851
8852       if (is_list)
8853         continue;
8854
8855       if (recurse)
8856         {
8857           GtkTreeIter child;
8858
8859           if (!path)
8860             path = gtk_tree_model_get_path (tree_view->priv->model, iter);
8861           else
8862             gtk_tree_path_next (path);
8863
8864           if (gtk_tree_model_iter_children (tree_view->priv->model, &child, iter))
8865             {
8866               gboolean expand;
8867
8868               g_signal_emit (tree_view, tree_view_signals[TEST_EXPAND_ROW], 0, iter, path, &expand);
8869
8870               if (gtk_tree_model_iter_has_child (tree_view->priv->model, iter)
8871                   && !expand)
8872                 {
8873                   temp->children = _gtk_rbtree_new ();
8874                   temp->children->parent_tree = tree;
8875                   temp->children->parent_node = temp;
8876                   gtk_tree_view_build_tree (tree_view, temp->children, &child, depth + 1, recurse);
8877                 }
8878             }
8879         }
8880
8881       if (gtk_tree_model_iter_has_child (tree_view->priv->model, iter))
8882         {
8883           if ((temp->flags&GTK_RBNODE_IS_PARENT) != GTK_RBNODE_IS_PARENT)
8884             temp->flags ^= GTK_RBNODE_IS_PARENT;
8885         }
8886     }
8887   while (gtk_tree_model_iter_next (tree_view->priv->model, iter));
8888
8889   if (path)
8890     gtk_tree_path_free (path);
8891 }
8892
8893 /* Make sure the node is visible vertically */
8894 static void
8895 gtk_tree_view_clamp_node_visible (GtkTreeView *tree_view,
8896                                   GtkRBTree   *tree,
8897                                   GtkRBNode   *node)
8898 {
8899   gint node_dy, height;
8900   GtkTreePath *path = NULL;
8901
8902   if (!GTK_WIDGET_REALIZED (tree_view))
8903     return;
8904
8905   /* just return if the node is visible, avoiding a costly expose */
8906   node_dy = _gtk_rbtree_node_find_offset (tree, node);
8907   height = ROW_HEIGHT (tree_view, GTK_RBNODE_GET_HEIGHT (node));
8908   if (! GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_INVALID)
8909       && node_dy >= tree_view->priv->vadjustment->value
8910       && node_dy + height <= (tree_view->priv->vadjustment->value
8911                               + tree_view->priv->vadjustment->page_size))
8912     return;
8913
8914   path = _gtk_tree_view_find_path (tree_view, tree, node);
8915   if (path)
8916     {
8917       /* We process updates because we want to clear old selected items when we scroll.
8918        * if this is removed, we get a "selection streak" at the bottom. */
8919       gdk_window_process_updates (tree_view->priv->bin_window, TRUE);
8920       gtk_tree_view_scroll_to_cell (tree_view, path, NULL, FALSE, 0.0, 0.0);
8921       gtk_tree_path_free (path);
8922     }
8923 }
8924
8925 static void
8926 gtk_tree_view_clamp_column_visible (GtkTreeView       *tree_view,
8927                                     GtkTreeViewColumn *column,
8928                                     gboolean           focus_to_cell)
8929 {
8930   gint x, width;
8931
8932   if (column == NULL)
8933     return;
8934
8935   x = column->button->allocation.x;
8936   width = column->button->allocation.width;
8937
8938   if (width > tree_view->priv->hadjustment->page_size)
8939     {
8940       /* The column is larger than the horizontal page size.  If the
8941        * column has cells which can be focussed individually, then we make
8942        * sure the cell which gets focus is fully visible (if even the
8943        * focus cell is bigger than the page size, we make sure the
8944        * left-hand side of the cell is visible).
8945        *
8946        * If the column does not have those so-called special cells, we
8947        * make sure the left-hand side of the column is visible.
8948        */
8949
8950       if (focus_to_cell && gtk_tree_view_has_special_cell (tree_view))
8951         {
8952           GtkTreePath *cursor_path;
8953           GdkRectangle background_area, cell_area, focus_area;
8954
8955           cursor_path = gtk_tree_row_reference_get_path (tree_view->priv->cursor);
8956
8957           gtk_tree_view_get_cell_area (tree_view,
8958                                        cursor_path, column, &cell_area);
8959           gtk_tree_view_get_background_area (tree_view,
8960                                              cursor_path, column,
8961                                              &background_area);
8962
8963           gtk_tree_path_free (cursor_path);
8964
8965           _gtk_tree_view_column_get_focus_area (column,
8966                                                 &background_area,
8967                                                 &cell_area,
8968                                                 &focus_area);
8969
8970           x = focus_area.x;
8971           width = focus_area.width;
8972
8973           if (width < tree_view->priv->hadjustment->page_size)
8974             {
8975               if ((tree_view->priv->hadjustment->value + tree_view->priv->hadjustment->page_size) < (x + width))
8976                 gtk_adjustment_set_value (tree_view->priv->hadjustment,
8977                                           x + width - tree_view->priv->hadjustment->page_size);
8978               else if (tree_view->priv->hadjustment->value > x)
8979                 gtk_adjustment_set_value (tree_view->priv->hadjustment, x);
8980             }
8981         }
8982
8983       gtk_adjustment_set_value (tree_view->priv->hadjustment,
8984                                 CLAMP (x,
8985                                        tree_view->priv->hadjustment->lower,
8986                                        tree_view->priv->hadjustment->upper
8987                                        - tree_view->priv->hadjustment->page_size));
8988     }
8989   else
8990     {
8991       if ((tree_view->priv->hadjustment->value + tree_view->priv->hadjustment->page_size) < (x + width))
8992           gtk_adjustment_set_value (tree_view->priv->hadjustment,
8993                                     x + width - tree_view->priv->hadjustment->page_size);
8994       else if (tree_view->priv->hadjustment->value > x)
8995         gtk_adjustment_set_value (tree_view->priv->hadjustment, x);
8996   }
8997 }
8998
8999 /* This function could be more efficient.  I'll optimize it if profiling seems
9000  * to imply that it is important */
9001 GtkTreePath *
9002 _gtk_tree_view_find_path (GtkTreeView *tree_view,
9003                           GtkRBTree   *tree,
9004                           GtkRBNode   *node)
9005 {
9006   GtkTreePath *path;
9007   GtkRBTree *tmp_tree;
9008   GtkRBNode *tmp_node, *last;
9009   gint count;
9010
9011   path = gtk_tree_path_new ();
9012
9013   g_return_val_if_fail (node != NULL, path);
9014   g_return_val_if_fail (node != tree->nil, path);
9015
9016   count = 1 + node->left->count;
9017
9018   last = node;
9019   tmp_node = node->parent;
9020   tmp_tree = tree;
9021   while (tmp_tree)
9022     {
9023       while (tmp_node != tmp_tree->nil)
9024         {
9025           if (tmp_node->right == last)
9026             count += 1 + tmp_node->left->count;
9027           last = tmp_node;
9028           tmp_node = tmp_node->parent;
9029         }
9030       gtk_tree_path_prepend_index (path, count - 1);
9031       last = tmp_tree->parent_node;
9032       tmp_tree = tmp_tree->parent_tree;
9033       if (last)
9034         {
9035           count = 1 + last->left->count;
9036           tmp_node = last->parent;
9037         }
9038     }
9039   return path;
9040 }
9041
9042 /* Returns TRUE if we ran out of tree before finding the path.  If the path is
9043  * invalid (ie. points to a node that's not in the tree), *tree and *node are
9044  * both set to NULL.
9045  */
9046 gboolean
9047 _gtk_tree_view_find_node (GtkTreeView  *tree_view,
9048                           GtkTreePath  *path,
9049                           GtkRBTree   **tree,
9050                           GtkRBNode   **node)
9051 {
9052   GtkRBNode *tmpnode = NULL;
9053   GtkRBTree *tmptree = tree_view->priv->tree;
9054   gint *indices = gtk_tree_path_get_indices (path);
9055   gint depth = gtk_tree_path_get_depth (path);
9056   gint i = 0;
9057
9058   *node = NULL;
9059   *tree = NULL;
9060
9061   if (depth == 0 || tmptree == NULL)
9062     return FALSE;
9063   do
9064     {
9065       tmpnode = _gtk_rbtree_find_count (tmptree, indices[i] + 1);
9066       ++i;
9067       if (tmpnode == NULL)
9068         {
9069           *tree = NULL;
9070           *node = NULL;
9071           return FALSE;
9072         }
9073       if (i >= depth)
9074         {
9075           *tree = tmptree;
9076           *node = tmpnode;
9077           return FALSE;
9078         }
9079       *tree = tmptree;
9080       *node = tmpnode;
9081       tmptree = tmpnode->children;
9082       if (tmptree == NULL)
9083         return TRUE;
9084     }
9085   while (1);
9086 }
9087
9088 static gboolean
9089 gtk_tree_view_is_expander_column (GtkTreeView       *tree_view,
9090                                   GtkTreeViewColumn *column)
9091 {
9092   GList *list;
9093
9094   if (GTK_TREE_VIEW_FLAG_SET (tree_view, GTK_TREE_VIEW_IS_LIST))
9095     return FALSE;
9096
9097   if (tree_view->priv->expander_column != NULL)
9098     {
9099       if (tree_view->priv->expander_column == column)
9100         return TRUE;
9101       return FALSE;
9102     }
9103   else
9104     {
9105       for (list = tree_view->priv->columns;
9106            list;
9107            list = list->next)
9108         if (((GtkTreeViewColumn *)list->data)->visible)
9109           break;
9110       if (list && list->data == column)
9111         return TRUE;
9112     }
9113   return FALSE;
9114 }
9115
9116 static void
9117 gtk_tree_view_add_move_binding (GtkBindingSet  *binding_set,
9118                                 guint           keyval,
9119                                 guint           modmask,
9120                                 gboolean        add_shifted_binding,
9121                                 GtkMovementStep step,
9122                                 gint            count)
9123 {
9124
9125   gtk_binding_entry_add_signal (binding_set, keyval, modmask,
9126                                 "move-cursor", 2,
9127                                 G_TYPE_ENUM, step,
9128                                 G_TYPE_INT, count);
9129
9130   if (add_shifted_binding)
9131     gtk_binding_entry_add_signal (binding_set, keyval, GDK_SHIFT_MASK,
9132                                   "move-cursor", 2,
9133                                   G_TYPE_ENUM, step,
9134                                   G_TYPE_INT, count);
9135
9136   if ((modmask & GDK_CONTROL_MASK) == GDK_CONTROL_MASK)
9137    return;
9138
9139   gtk_binding_entry_add_signal (binding_set, keyval, GDK_CONTROL_MASK | GDK_SHIFT_MASK,
9140                                 "move-cursor", 2,
9141                                 G_TYPE_ENUM, step,
9142                                 G_TYPE_INT, count);
9143
9144   gtk_binding_entry_add_signal (binding_set, keyval, GDK_CONTROL_MASK,
9145                                 "move-cursor", 2,
9146                                 G_TYPE_ENUM, step,
9147                                 G_TYPE_INT, count);
9148 }
9149
9150 static gint
9151 gtk_tree_view_unref_tree_helper (GtkTreeModel *model,
9152                                  GtkTreeIter  *iter,
9153                                  GtkRBTree    *tree,
9154                                  GtkRBNode    *node)
9155 {
9156   gint retval = FALSE;
9157   do
9158     {
9159       g_return_val_if_fail (node != NULL, FALSE);
9160
9161       if (node->children)
9162         {
9163           GtkTreeIter child;
9164           GtkRBTree *new_tree;
9165           GtkRBNode *new_node;
9166
9167           new_tree = node->children;
9168           new_node = new_tree->root;
9169
9170           while (new_node && new_node->left != new_tree->nil)
9171             new_node = new_node->left;
9172
9173           if (!gtk_tree_model_iter_children (model, &child, iter))
9174             return FALSE;
9175
9176           retval = retval || gtk_tree_view_unref_tree_helper (model, &child, new_tree, new_node);
9177         }
9178
9179       if (GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_SELECTED))
9180         retval = TRUE;
9181       gtk_tree_model_unref_node (model, iter);
9182       node = _gtk_rbtree_next (tree, node);
9183     }
9184   while (gtk_tree_model_iter_next (model, iter));
9185
9186   return retval;
9187 }
9188
9189 static gint
9190 gtk_tree_view_unref_and_check_selection_tree (GtkTreeView *tree_view,
9191                                               GtkRBTree   *tree)
9192 {
9193   GtkTreeIter iter;
9194   GtkTreePath *path;
9195   GtkRBNode *node;
9196   gint retval;
9197
9198   if (!tree)
9199     return FALSE;
9200
9201   node = tree->root;
9202   while (node && node->left != tree->nil)
9203     node = node->left;
9204
9205   g_return_val_if_fail (node != NULL, FALSE);
9206   path = _gtk_tree_view_find_path (tree_view, tree, node);
9207   gtk_tree_model_get_iter (GTK_TREE_MODEL (tree_view->priv->model),
9208                            &iter, path);
9209   retval = gtk_tree_view_unref_tree_helper (GTK_TREE_MODEL (tree_view->priv->model), &iter, tree, node);
9210   gtk_tree_path_free (path);
9211
9212   return retval;
9213 }
9214
9215 static void
9216 gtk_tree_view_set_column_drag_info (GtkTreeView       *tree_view,
9217                                     GtkTreeViewColumn *column)
9218 {
9219   GtkTreeViewColumn *left_column;
9220   GtkTreeViewColumn *cur_column = NULL;
9221   GtkTreeViewColumnReorder *reorder;
9222   gboolean rtl;
9223   GList *tmp_list;
9224   gint left;
9225
9226   /* We want to precalculate the motion list such that we know what column slots
9227    * are available.
9228    */
9229   left_column = NULL;
9230   rtl = (gtk_widget_get_direction (GTK_WIDGET (tree_view)) == GTK_TEXT_DIR_RTL);
9231
9232   /* First, identify all possible drop spots */
9233   if (rtl)
9234     tmp_list = g_list_last (tree_view->priv->columns);
9235   else
9236     tmp_list = g_list_first (tree_view->priv->columns);
9237
9238   while (tmp_list)
9239     {
9240       cur_column = GTK_TREE_VIEW_COLUMN (tmp_list->data);
9241       tmp_list = rtl?g_list_previous (tmp_list):g_list_next (tmp_list);
9242
9243       if (cur_column->visible == FALSE)
9244         continue;
9245
9246       /* If it's not the column moving and func tells us to skip over the column, we continue. */
9247       if (left_column != column && cur_column != column &&
9248           tree_view->priv->column_drop_func &&
9249           ! tree_view->priv->column_drop_func (tree_view, column, left_column, cur_column, tree_view->priv->column_drop_func_data))
9250         {
9251           left_column = cur_column;
9252           continue;
9253         }
9254       reorder = g_slice_new0 (GtkTreeViewColumnReorder);
9255       reorder->left_column = left_column;
9256       left_column = reorder->right_column = cur_column;
9257
9258       tree_view->priv->column_drag_info = g_list_append (tree_view->priv->column_drag_info, reorder);
9259     }
9260
9261   /* Add the last one */
9262   if (tree_view->priv->column_drop_func == NULL ||
9263       ((left_column != column) &&
9264        tree_view->priv->column_drop_func (tree_view, column, left_column, NULL, tree_view->priv->column_drop_func_data)))
9265     {
9266       reorder = g_slice_new0 (GtkTreeViewColumnReorder);
9267       reorder->left_column = left_column;
9268       reorder->right_column = NULL;
9269       tree_view->priv->column_drag_info = g_list_append (tree_view->priv->column_drag_info, reorder);
9270     }
9271
9272   /* We quickly check to see if it even makes sense to reorder columns. */
9273   /* If there is nothing that can be moved, then we return */
9274
9275   if (tree_view->priv->column_drag_info == NULL)
9276     return;
9277
9278   /* We know there are always 2 slots possbile, as you can always return column. */
9279   /* If that's all there is, return */
9280   if (tree_view->priv->column_drag_info->next == NULL ||
9281       (tree_view->priv->column_drag_info->next->next == NULL &&
9282        ((GtkTreeViewColumnReorder *)tree_view->priv->column_drag_info->data)->right_column == column &&
9283        ((GtkTreeViewColumnReorder *)tree_view->priv->column_drag_info->next->data)->left_column == column))
9284     {
9285       for (tmp_list = tree_view->priv->column_drag_info; tmp_list; tmp_list = tmp_list->next)
9286         g_slice_free (GtkTreeViewColumnReorder, tmp_list->data);
9287       g_list_free (tree_view->priv->column_drag_info);
9288       tree_view->priv->column_drag_info = NULL;
9289       return;
9290     }
9291   /* We fill in the ranges for the columns, now that we've isolated them */
9292   left = - TREE_VIEW_COLUMN_DRAG_DEAD_MULTIPLIER (tree_view);
9293
9294   for (tmp_list = tree_view->priv->column_drag_info; tmp_list; tmp_list = tmp_list->next)
9295     {
9296       reorder = (GtkTreeViewColumnReorder *) tmp_list->data;
9297
9298       reorder->left_align = left;
9299       if (tmp_list->next != NULL)
9300         {
9301           g_assert (tmp_list->next->data);
9302           left = reorder->right_align = (reorder->right_column->button->allocation.x +
9303                                          reorder->right_column->button->allocation.width +
9304                                          ((GtkTreeViewColumnReorder *)tmp_list->next->data)->left_column->button->allocation.x)/2;
9305         }
9306       else
9307         {
9308           gint width;
9309
9310           gdk_drawable_get_size (tree_view->priv->header_window, &width, NULL);
9311           reorder->right_align = width + TREE_VIEW_COLUMN_DRAG_DEAD_MULTIPLIER (tree_view);
9312         }
9313     }
9314 }
9315
9316 void
9317 _gtk_tree_view_column_start_drag (GtkTreeView       *tree_view,
9318                                   GtkTreeViewColumn *column)
9319 {
9320   GdkEvent *send_event;
9321   GtkAllocation allocation;
9322   gint x, y, width, height;
9323   GdkScreen *screen = gtk_widget_get_screen (GTK_WIDGET (tree_view));
9324   GdkDisplay *display = gdk_screen_get_display (screen);
9325
9326   g_return_if_fail (tree_view->priv->column_drag_info == NULL);
9327   g_return_if_fail (tree_view->priv->cur_reorder == NULL);
9328
9329   gtk_tree_view_set_column_drag_info (tree_view, column);
9330
9331   if (tree_view->priv->column_drag_info == NULL)
9332     return;
9333
9334   if (tree_view->priv->drag_window == NULL)
9335     {
9336       GdkWindowAttr attributes;
9337       guint attributes_mask;
9338
9339       attributes.window_type = GDK_WINDOW_CHILD;
9340       attributes.wclass = GDK_INPUT_OUTPUT;
9341       attributes.x = column->button->allocation.x;
9342       attributes.y = 0;
9343       attributes.width = column->button->allocation.width;
9344       attributes.height = column->button->allocation.height;
9345       attributes.visual = gtk_widget_get_visual (GTK_WIDGET (tree_view));
9346       attributes.colormap = gtk_widget_get_colormap (GTK_WIDGET (tree_view));
9347       attributes.event_mask = GDK_VISIBILITY_NOTIFY_MASK | GDK_EXPOSURE_MASK | GDK_POINTER_MOTION_MASK;
9348       attributes_mask = GDK_WA_X | GDK_WA_Y | GDK_WA_VISUAL | GDK_WA_COLORMAP;
9349
9350       tree_view->priv->drag_window = gdk_window_new (tree_view->priv->bin_window,
9351                                                      &attributes,
9352                                                      attributes_mask);
9353       gdk_window_set_user_data (tree_view->priv->drag_window, GTK_WIDGET (tree_view));
9354     }
9355
9356   gdk_display_pointer_ungrab (display, GDK_CURRENT_TIME);
9357   gdk_display_keyboard_ungrab (display, GDK_CURRENT_TIME);
9358
9359   gtk_grab_remove (column->button);
9360
9361   send_event = gdk_event_new (GDK_LEAVE_NOTIFY);
9362   send_event->crossing.send_event = TRUE;
9363   send_event->crossing.window = g_object_ref (GTK_BUTTON (column->button)->event_window);
9364   send_event->crossing.subwindow = NULL;
9365   send_event->crossing.detail = GDK_NOTIFY_ANCESTOR;
9366   send_event->crossing.time = GDK_CURRENT_TIME;
9367
9368   gtk_propagate_event (column->button, send_event);
9369   gdk_event_free (send_event);
9370
9371   send_event = gdk_event_new (GDK_BUTTON_RELEASE);
9372   send_event->button.window = g_object_ref (gdk_screen_get_root_window (screen));
9373   send_event->button.send_event = TRUE;
9374   send_event->button.time = GDK_CURRENT_TIME;
9375   send_event->button.x = -1;
9376   send_event->button.y = -1;
9377   send_event->button.axes = NULL;
9378   send_event->button.state = 0;
9379   send_event->button.button = 1;
9380   send_event->button.device = gdk_display_get_core_pointer (display);
9381   send_event->button.x_root = 0;
9382   send_event->button.y_root = 0;
9383
9384   gtk_propagate_event (column->button, send_event);
9385   gdk_event_free (send_event);
9386
9387   /* Kids, don't try this at home */
9388   g_object_ref (column->button);
9389   gtk_container_remove (GTK_CONTAINER (tree_view), column->button);
9390   gtk_widget_set_parent_window (column->button, tree_view->priv->drag_window);
9391   gtk_widget_set_parent (column->button, GTK_WIDGET (tree_view));
9392   g_object_unref (column->button);
9393
9394   tree_view->priv->drag_column_x = column->button->allocation.x;
9395   allocation = column->button->allocation;
9396   allocation.x = 0;
9397   gtk_widget_size_allocate (column->button, &allocation);
9398   gtk_widget_set_parent_window (column->button, tree_view->priv->drag_window);
9399
9400   tree_view->priv->drag_column = column;
9401   gdk_window_show (tree_view->priv->drag_window);
9402
9403   gdk_window_get_origin (tree_view->priv->header_window, &x, &y);
9404   gdk_drawable_get_size (tree_view->priv->header_window, &width, &height);
9405
9406   gtk_widget_grab_focus (GTK_WIDGET (tree_view));
9407   while (gtk_events_pending ())
9408     gtk_main_iteration ();
9409
9410   GTK_TREE_VIEW_SET_FLAG (tree_view, GTK_TREE_VIEW_IN_COLUMN_DRAG);
9411   gdk_pointer_grab (tree_view->priv->drag_window,
9412                     FALSE,
9413                     GDK_POINTER_MOTION_MASK|GDK_BUTTON_RELEASE_MASK,
9414                     NULL, NULL, GDK_CURRENT_TIME);
9415   gdk_keyboard_grab (tree_view->priv->drag_window,
9416                      FALSE,
9417                      GDK_CURRENT_TIME);
9418 }
9419
9420 static void
9421 gtk_tree_view_queue_draw_arrow (GtkTreeView        *tree_view,
9422                                 GtkRBTree          *tree,
9423                                 GtkRBNode          *node,
9424                                 const GdkRectangle *clip_rect)
9425 {
9426   GdkRectangle rect;
9427
9428   if (!GTK_WIDGET_REALIZED (tree_view))
9429     return;
9430
9431   rect.x = 0;
9432   rect.width = MAX (tree_view->priv->expander_size, MAX (tree_view->priv->width, GTK_WIDGET (tree_view)->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   if (clip_rect)
9438     {
9439       GdkRectangle new_rect;
9440
9441       gdk_rectangle_intersect (clip_rect, &rect, &new_rect);
9442
9443       gdk_window_invalidate_rect (tree_view->priv->bin_window, &new_rect, TRUE);
9444     }
9445   else
9446     {
9447       gdk_window_invalidate_rect (tree_view->priv->bin_window, &rect, TRUE);
9448     }
9449 }
9450
9451 void
9452 _gtk_tree_view_queue_draw_node (GtkTreeView        *tree_view,
9453                                 GtkRBTree          *tree,
9454                                 GtkRBNode          *node,
9455                                 const GdkRectangle *clip_rect)
9456 {
9457   GdkRectangle rect;
9458
9459   if (!GTK_WIDGET_REALIZED (tree_view))
9460     return;
9461
9462   rect.x = 0;
9463   rect.width = MAX (tree_view->priv->width, GTK_WIDGET (tree_view)->allocation.width);
9464
9465   rect.y = BACKGROUND_FIRST_PIXEL (tree_view, tree, node);
9466   rect.height = ROW_HEIGHT (tree_view, BACKGROUND_HEIGHT (node));
9467
9468   if (clip_rect)
9469     {
9470       GdkRectangle new_rect;
9471
9472       gdk_rectangle_intersect (clip_rect, &rect, &new_rect);
9473
9474       gdk_window_invalidate_rect (tree_view->priv->bin_window, &new_rect, TRUE);
9475     }
9476   else
9477     {
9478       gdk_window_invalidate_rect (tree_view->priv->bin_window, &rect, TRUE);
9479     }
9480 }
9481
9482 static void
9483 gtk_tree_view_queue_draw_path (GtkTreeView        *tree_view,
9484                                GtkTreePath        *path,
9485                                const GdkRectangle *clip_rect)
9486 {
9487   GtkRBTree *tree = NULL;
9488   GtkRBNode *node = NULL;
9489
9490   _gtk_tree_view_find_node (tree_view, path, &tree, &node);
9491
9492   if (tree)
9493     _gtk_tree_view_queue_draw_node (tree_view, tree, node, clip_rect);
9494 }
9495
9496 /* x and y are the mouse position
9497  */
9498 static void
9499 gtk_tree_view_draw_arrow (GtkTreeView *tree_view,
9500                           GtkRBTree   *tree,
9501                           GtkRBNode   *node,
9502                           /* in bin_window coordinates */
9503                           gint         x,
9504                           gint         y)
9505 {
9506   GdkRectangle area;
9507   GtkStateType state;
9508   GtkWidget *widget;
9509   gint x_offset = 0;
9510   gint x2;
9511   gint vertical_separator;
9512   gint expander_size;
9513   GtkExpanderStyle expander_style;
9514
9515   gtk_widget_style_get (GTK_WIDGET (tree_view),
9516                         "vertical-separator", &vertical_separator,
9517                         NULL);
9518   expander_size = tree_view->priv->expander_size - EXPANDER_EXTRA_PADDING;
9519
9520   if (! GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_PARENT))
9521     return;
9522
9523   widget = GTK_WIDGET (tree_view);
9524
9525   gtk_tree_view_get_arrow_xrange (tree_view, tree, &x_offset, &x2);
9526
9527   area.x = x_offset;
9528   area.y = CELL_FIRST_PIXEL (tree_view, tree, node, vertical_separator);
9529   area.width = expander_size + 2;
9530   area.height = MAX (CELL_HEIGHT (node, vertical_separator), (expander_size - vertical_separator));
9531
9532   if (GTK_WIDGET_STATE (tree_view) == GTK_STATE_INSENSITIVE)
9533     {
9534       state = GTK_STATE_INSENSITIVE;
9535     }
9536   else if (node == tree_view->priv->button_pressed_node)
9537     {
9538       if (x >= area.x && x <= (area.x + area.width) &&
9539           y >= area.y && y <= (area.y + area.height))
9540         state = GTK_STATE_ACTIVE;
9541       else
9542         state = GTK_STATE_NORMAL;
9543     }
9544   else
9545     {
9546       if (node == tree_view->priv->prelight_node &&
9547           GTK_TREE_VIEW_FLAG_SET (tree_view, GTK_TREE_VIEW_ARROW_PRELIT))
9548         state = GTK_STATE_PRELIGHT;
9549       else
9550         state = GTK_STATE_NORMAL;
9551     }
9552
9553   if (GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_SEMI_EXPANDED))
9554     expander_style = GTK_EXPANDER_SEMI_EXPANDED;
9555   else if (GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_SEMI_COLLAPSED))
9556     expander_style = GTK_EXPANDER_SEMI_COLLAPSED;
9557   else if (node->children != NULL)
9558     expander_style = GTK_EXPANDER_EXPANDED;
9559   else
9560     expander_style = GTK_EXPANDER_COLLAPSED;
9561
9562   gtk_paint_expander (widget->style,
9563                       tree_view->priv->bin_window,
9564                       state,
9565                       &area,
9566                       widget,
9567                       "treeview",
9568                       area.x + area.width / 2,
9569                       area.y + area.height / 2,
9570                       expander_style);
9571 }
9572
9573 static void
9574 gtk_tree_view_focus_to_cursor (GtkTreeView *tree_view)
9575
9576 {
9577   GtkTreePath *cursor_path;
9578
9579   if ((tree_view->priv->tree == NULL) ||
9580       (! GTK_WIDGET_REALIZED (tree_view)))
9581     return;
9582
9583   cursor_path = NULL;
9584   if (tree_view->priv->cursor)
9585     cursor_path = gtk_tree_row_reference_get_path (tree_view->priv->cursor);
9586
9587   if (cursor_path == NULL)
9588     {
9589       /* Consult the selection before defaulting to the
9590        * first focusable element
9591        */
9592       GList *selected_rows;
9593       GtkTreeModel *model;
9594       GtkTreeSelection *selection;
9595
9596       selection = gtk_tree_view_get_selection (tree_view);
9597       selected_rows = gtk_tree_selection_get_selected_rows (selection, &model);
9598
9599       if (selected_rows)
9600         {
9601           cursor_path = gtk_tree_path_copy((const GtkTreePath *)(selected_rows->data));
9602           g_list_foreach (selected_rows, (GFunc)gtk_tree_path_free, NULL);
9603           g_list_free (selected_rows);
9604         }
9605       else
9606         {
9607           cursor_path = gtk_tree_path_new_first ();
9608           search_first_focusable_path (tree_view, &cursor_path,
9609                                        TRUE, NULL, NULL);
9610         }
9611
9612       gtk_tree_row_reference_free (tree_view->priv->cursor);
9613       tree_view->priv->cursor = NULL;
9614
9615       if (cursor_path)
9616         {
9617           if (tree_view->priv->selection->type == GTK_SELECTION_MULTIPLE)
9618             gtk_tree_view_real_set_cursor (tree_view, cursor_path, FALSE, FALSE);
9619           else
9620             gtk_tree_view_real_set_cursor (tree_view, cursor_path, TRUE, FALSE);
9621         }
9622     }
9623
9624   if (cursor_path)
9625     {
9626       GTK_TREE_VIEW_SET_FLAG (tree_view, GTK_TREE_VIEW_DRAW_KEYFOCUS);
9627
9628       gtk_tree_view_queue_draw_path (tree_view, cursor_path, NULL);
9629       gtk_tree_path_free (cursor_path);
9630
9631       if (tree_view->priv->focus_column == NULL)
9632         {
9633           GList *list;
9634           for (list = tree_view->priv->columns; list; list = list->next)
9635             {
9636               if (GTK_TREE_VIEW_COLUMN (list->data)->visible)
9637                 {
9638                   tree_view->priv->focus_column = GTK_TREE_VIEW_COLUMN (list->data);
9639                   break;
9640                 }
9641             }
9642         }
9643     }
9644 }
9645
9646 static void
9647 gtk_tree_view_move_cursor_up_down (GtkTreeView *tree_view,
9648                                    gint         count)
9649 {
9650   gint selection_count;
9651   GtkRBTree *cursor_tree = NULL;
9652   GtkRBNode *cursor_node = NULL;
9653   GtkRBTree *new_cursor_tree = NULL;
9654   GtkRBNode *new_cursor_node = NULL;
9655   GtkTreePath *cursor_path = NULL;
9656   gboolean grab_focus = TRUE;
9657   gboolean selectable;
9658
9659   if (! gtk_widget_has_focus (GTK_WIDGET (tree_view)))
9660     return;
9661
9662   cursor_path = NULL;
9663   if (!gtk_tree_row_reference_valid (tree_view->priv->cursor))
9664     /* FIXME: we lost the cursor; should we get the first? */
9665     return;
9666
9667   cursor_path = gtk_tree_row_reference_get_path (tree_view->priv->cursor);
9668   _gtk_tree_view_find_node (tree_view, cursor_path,
9669                             &cursor_tree, &cursor_node);
9670
9671   if (cursor_tree == NULL)
9672     /* FIXME: we lost the cursor; should we get the first? */
9673     return;
9674
9675   selection_count = gtk_tree_selection_count_selected_rows (tree_view->priv->selection);
9676   selectable = _gtk_tree_selection_row_is_selectable (tree_view->priv->selection,
9677                                                       cursor_node,
9678                                                       cursor_path);
9679
9680   if (selection_count == 0
9681       && tree_view->priv->selection->type != GTK_SELECTION_NONE
9682       && !tree_view->priv->ctrl_pressed
9683       && selectable)
9684     {
9685       /* Don't move the cursor, but just select the current node */
9686       new_cursor_tree = cursor_tree;
9687       new_cursor_node = cursor_node;
9688     }
9689   else
9690     {
9691       if (count == -1)
9692         _gtk_rbtree_prev_full (cursor_tree, cursor_node,
9693                                &new_cursor_tree, &new_cursor_node);
9694       else
9695         _gtk_rbtree_next_full (cursor_tree, cursor_node,
9696                                &new_cursor_tree, &new_cursor_node);
9697     }
9698
9699   gtk_tree_path_free (cursor_path);
9700
9701   if (new_cursor_node)
9702     {
9703       cursor_path = _gtk_tree_view_find_path (tree_view,
9704                                               new_cursor_tree, new_cursor_node);
9705
9706       search_first_focusable_path (tree_view, &cursor_path,
9707                                    (count != -1),
9708                                    &new_cursor_tree,
9709                                    &new_cursor_node);
9710
9711       if (cursor_path)
9712         gtk_tree_path_free (cursor_path);
9713     }
9714
9715   /*
9716    * If the list has only one item and multi-selection is set then select
9717    * the row (if not yet selected).
9718    */
9719   if (tree_view->priv->selection->type == GTK_SELECTION_MULTIPLE &&
9720       new_cursor_node == NULL)
9721     {
9722       if (count == -1)
9723         _gtk_rbtree_next_full (cursor_tree, cursor_node,
9724                                &new_cursor_tree, &new_cursor_node);
9725       else
9726         _gtk_rbtree_prev_full (cursor_tree, cursor_node,
9727                                &new_cursor_tree, &new_cursor_node);
9728
9729       if (new_cursor_node == NULL
9730           && !GTK_RBNODE_FLAG_SET (cursor_node, GTK_RBNODE_IS_SELECTED))
9731         {
9732           new_cursor_node = cursor_node;
9733           new_cursor_tree = cursor_tree;
9734         }
9735       else
9736         {
9737           new_cursor_node = NULL;
9738         }
9739     }
9740
9741   if (new_cursor_node)
9742     {
9743       cursor_path = _gtk_tree_view_find_path (tree_view, new_cursor_tree, new_cursor_node);
9744       gtk_tree_view_real_set_cursor (tree_view, cursor_path, TRUE, TRUE);
9745       gtk_tree_path_free (cursor_path);
9746     }
9747   else
9748     {
9749       gtk_tree_view_clamp_node_visible (tree_view, cursor_tree, cursor_node);
9750
9751       if (!tree_view->priv->shift_pressed)
9752         {
9753           if (! gtk_widget_keynav_failed (GTK_WIDGET (tree_view),
9754                                           count < 0 ?
9755                                           GTK_DIR_UP : GTK_DIR_DOWN))
9756             {
9757               GtkWidget *toplevel = gtk_widget_get_toplevel (GTK_WIDGET (tree_view));
9758
9759               if (toplevel)
9760                 gtk_widget_child_focus (toplevel,
9761                                         count < 0 ?
9762                                         GTK_DIR_TAB_BACKWARD :
9763                                         GTK_DIR_TAB_FORWARD);
9764
9765               grab_focus = FALSE;
9766             }
9767         }
9768       else
9769         {
9770           gtk_widget_error_bell (GTK_WIDGET (tree_view));
9771         }
9772     }
9773
9774   if (grab_focus)
9775     gtk_widget_grab_focus (GTK_WIDGET (tree_view));
9776 }
9777
9778 static void
9779 gtk_tree_view_move_cursor_page_up_down (GtkTreeView *tree_view,
9780                                         gint         count)
9781 {
9782   GtkRBTree *cursor_tree = NULL;
9783   GtkRBNode *cursor_node = NULL;
9784   GtkTreePath *old_cursor_path = NULL;
9785   GtkTreePath *cursor_path = NULL;
9786   GtkRBTree *start_cursor_tree = NULL;
9787   GtkRBNode *start_cursor_node = NULL;
9788   gint y;
9789   gint window_y;
9790   gint vertical_separator;
9791
9792   if (!gtk_widget_has_focus (GTK_WIDGET (tree_view)))
9793     return;
9794
9795   if (gtk_tree_row_reference_valid (tree_view->priv->cursor))
9796     old_cursor_path = gtk_tree_row_reference_get_path (tree_view->priv->cursor);
9797   else
9798     /* This is sorta weird.  Focus in should give us a cursor */
9799     return;
9800
9801   gtk_widget_style_get (GTK_WIDGET (tree_view), "vertical-separator", &vertical_separator, NULL);
9802   _gtk_tree_view_find_node (tree_view, old_cursor_path,
9803                             &cursor_tree, &cursor_node);
9804
9805   if (cursor_tree == NULL)
9806     {
9807       /* FIXME: we lost the cursor.  Should we try to get one? */
9808       gtk_tree_path_free (old_cursor_path);
9809       return;
9810     }
9811   g_return_if_fail (cursor_node != NULL);
9812
9813   y = _gtk_rbtree_node_find_offset (cursor_tree, cursor_node);
9814   window_y = RBTREE_Y_TO_TREE_WINDOW_Y (tree_view, y);
9815   y += tree_view->priv->cursor_offset;
9816   y += count * (int)tree_view->priv->vadjustment->page_increment;
9817   y = CLAMP (y, (gint)tree_view->priv->vadjustment->lower,  (gint)tree_view->priv->vadjustment->upper - vertical_separator);
9818
9819   if (y >= tree_view->priv->height)
9820     y = tree_view->priv->height - 1;
9821
9822   tree_view->priv->cursor_offset =
9823     _gtk_rbtree_find_offset (tree_view->priv->tree, y,
9824                              &cursor_tree, &cursor_node);
9825
9826   if (tree_view->priv->cursor_offset > BACKGROUND_HEIGHT (cursor_node))
9827     {
9828       _gtk_rbtree_next_full (cursor_tree, cursor_node,
9829                              &cursor_tree, &cursor_node);
9830       tree_view->priv->cursor_offset -= BACKGROUND_HEIGHT (cursor_node);
9831     }
9832
9833   y -= tree_view->priv->cursor_offset;
9834   cursor_path = _gtk_tree_view_find_path (tree_view, cursor_tree, cursor_node);
9835
9836   start_cursor_tree = cursor_tree;
9837   start_cursor_node = cursor_node;
9838
9839   if (! search_first_focusable_path (tree_view, &cursor_path,
9840                                      (count != -1),
9841                                      &cursor_tree, &cursor_node))
9842     {
9843       /* It looks like we reached the end of the view without finding
9844        * a focusable row.  We will step backwards to find the last
9845        * focusable row.
9846        */
9847       cursor_tree = start_cursor_tree;
9848       cursor_node = start_cursor_node;
9849       cursor_path = _gtk_tree_view_find_path (tree_view, cursor_tree, cursor_node);
9850
9851       search_first_focusable_path (tree_view, &cursor_path,
9852                                    (count == -1),
9853                                    &cursor_tree, &cursor_node);
9854     }
9855
9856   if (!cursor_path)
9857     goto cleanup;
9858
9859   /* update y */
9860   y = _gtk_rbtree_node_find_offset (cursor_tree, cursor_node);
9861
9862   gtk_tree_view_real_set_cursor (tree_view, cursor_path, TRUE, FALSE);
9863
9864   y -= window_y;
9865   gtk_tree_view_scroll_to_point (tree_view, -1, y);
9866   gtk_tree_view_clamp_node_visible (tree_view, cursor_tree, cursor_node);
9867   _gtk_tree_view_queue_draw_node (tree_view, cursor_tree, cursor_node, NULL);
9868
9869   if (!gtk_tree_path_compare (old_cursor_path, cursor_path))
9870     gtk_widget_error_bell (GTK_WIDGET (tree_view));
9871
9872   gtk_widget_grab_focus (GTK_WIDGET (tree_view));
9873
9874 cleanup:
9875   gtk_tree_path_free (old_cursor_path);
9876   gtk_tree_path_free (cursor_path);
9877 }
9878
9879 static void
9880 gtk_tree_view_move_cursor_left_right (GtkTreeView *tree_view,
9881                                       gint         count)
9882 {
9883   GtkRBTree *cursor_tree = NULL;
9884   GtkRBNode *cursor_node = NULL;
9885   GtkTreePath *cursor_path = NULL;
9886   GtkTreeViewColumn *column;
9887   GtkTreeIter iter;
9888   GList *list;
9889   gboolean found_column = FALSE;
9890   gboolean rtl;
9891
9892   rtl = (gtk_widget_get_direction (GTK_WIDGET (tree_view)) == GTK_TEXT_DIR_RTL);
9893
9894   if (!gtk_widget_has_focus (GTK_WIDGET (tree_view)))
9895     return;
9896
9897   if (gtk_tree_row_reference_valid (tree_view->priv->cursor))
9898     cursor_path = gtk_tree_row_reference_get_path (tree_view->priv->cursor);
9899   else
9900     return;
9901
9902   _gtk_tree_view_find_node (tree_view, cursor_path, &cursor_tree, &cursor_node);
9903   if (cursor_tree == NULL)
9904     return;
9905   if (gtk_tree_model_get_iter (tree_view->priv->model, &iter, cursor_path) == FALSE)
9906     {
9907       gtk_tree_path_free (cursor_path);
9908       return;
9909     }
9910   gtk_tree_path_free (cursor_path);
9911
9912   list = rtl ? g_list_last (tree_view->priv->columns) : g_list_first (tree_view->priv->columns);
9913   if (tree_view->priv->focus_column)
9914     {
9915       for (; list; list = (rtl ? list->prev : list->next))
9916         {
9917           if (list->data == tree_view->priv->focus_column)
9918             break;
9919         }
9920     }
9921
9922   while (list)
9923     {
9924       gboolean left, right;
9925
9926       column = list->data;
9927       if (column->visible == FALSE)
9928         goto loop_end;
9929
9930       gtk_tree_view_column_cell_set_cell_data (column,
9931                                                tree_view->priv->model,
9932                                                &iter,
9933                                                GTK_RBNODE_FLAG_SET (cursor_node, GTK_RBNODE_IS_PARENT),
9934                                                cursor_node->children?TRUE:FALSE);
9935
9936       if (rtl)
9937         {
9938           right = list->prev ? TRUE : FALSE;
9939           left = list->next ? TRUE : FALSE;
9940         }
9941       else
9942         {
9943           left = list->prev ? TRUE : FALSE;
9944           right = list->next ? TRUE : FALSE;
9945         }
9946
9947       if (_gtk_tree_view_column_cell_focus (column, count, left, right))
9948         {
9949           tree_view->priv->focus_column = column;
9950           found_column = TRUE;
9951           break;
9952         }
9953     loop_end:
9954       if (count == 1)
9955         list = rtl ? list->prev : list->next;
9956       else
9957         list = rtl ? list->next : list->prev;
9958     }
9959
9960   if (found_column)
9961     {
9962       if (!gtk_tree_view_has_special_cell (tree_view))
9963         _gtk_tree_view_queue_draw_node (tree_view,
9964                                         cursor_tree,
9965                                         cursor_node,
9966                                         NULL);
9967       g_signal_emit (tree_view, tree_view_signals[CURSOR_CHANGED], 0);
9968       gtk_widget_grab_focus (GTK_WIDGET (tree_view));
9969     }
9970   else
9971     {
9972       gtk_widget_error_bell (GTK_WIDGET (tree_view));
9973     }
9974
9975   gtk_tree_view_clamp_column_visible (tree_view,
9976                                       tree_view->priv->focus_column, TRUE);
9977 }
9978
9979 static void
9980 gtk_tree_view_move_cursor_start_end (GtkTreeView *tree_view,
9981                                      gint         count)
9982 {
9983   GtkRBTree *cursor_tree;
9984   GtkRBNode *cursor_node;
9985   GtkTreePath *path;
9986   GtkTreePath *old_path;
9987
9988   if (!gtk_widget_has_focus (GTK_WIDGET (tree_view)))
9989     return;
9990
9991   g_return_if_fail (tree_view->priv->tree != NULL);
9992
9993   gtk_tree_view_get_cursor (tree_view, &old_path, NULL);
9994
9995   cursor_tree = tree_view->priv->tree;
9996   cursor_node = cursor_tree->root;
9997
9998   if (count == -1)
9999     {
10000       while (cursor_node && cursor_node->left != cursor_tree->nil)
10001         cursor_node = cursor_node->left;
10002
10003       /* Now go forward to find the first focusable row. */
10004       path = _gtk_tree_view_find_path (tree_view, cursor_tree, cursor_node);
10005       search_first_focusable_path (tree_view, &path,
10006                                    TRUE, &cursor_tree, &cursor_node);
10007     }
10008   else
10009     {
10010       do
10011         {
10012           while (cursor_node && cursor_node->right != cursor_tree->nil)
10013             cursor_node = cursor_node->right;
10014           if (cursor_node->children == NULL)
10015             break;
10016
10017           cursor_tree = cursor_node->children;
10018           cursor_node = cursor_tree->root;
10019         }
10020       while (1);
10021
10022       /* Now go backwards to find last focusable row. */
10023       path = _gtk_tree_view_find_path (tree_view, cursor_tree, cursor_node);
10024       search_first_focusable_path (tree_view, &path,
10025                                    FALSE, &cursor_tree, &cursor_node);
10026     }
10027
10028   if (!path)
10029     goto cleanup;
10030
10031   if (gtk_tree_path_compare (old_path, path))
10032     {
10033       gtk_tree_view_real_set_cursor (tree_view, path, TRUE, TRUE);
10034       gtk_widget_grab_focus (GTK_WIDGET (tree_view));
10035     }
10036   else
10037     {
10038       gtk_widget_error_bell (GTK_WIDGET (tree_view));
10039     }
10040
10041 cleanup:
10042   gtk_tree_path_free (old_path);
10043   gtk_tree_path_free (path);
10044 }
10045
10046 static gboolean
10047 gtk_tree_view_real_select_all (GtkTreeView *tree_view)
10048 {
10049   if (!gtk_widget_has_focus (GTK_WIDGET (tree_view)))
10050     return FALSE;
10051
10052   if (tree_view->priv->selection->type != GTK_SELECTION_MULTIPLE)
10053     return FALSE;
10054
10055   gtk_tree_selection_select_all (tree_view->priv->selection);
10056
10057   return TRUE;
10058 }
10059
10060 static gboolean
10061 gtk_tree_view_real_unselect_all (GtkTreeView *tree_view)
10062 {
10063   if (!gtk_widget_has_focus (GTK_WIDGET (tree_view)))
10064     return FALSE;
10065
10066   if (tree_view->priv->selection->type != GTK_SELECTION_MULTIPLE)
10067     return FALSE;
10068
10069   gtk_tree_selection_unselect_all (tree_view->priv->selection);
10070
10071   return TRUE;
10072 }
10073
10074 static gboolean
10075 gtk_tree_view_real_select_cursor_row (GtkTreeView *tree_view,
10076                                       gboolean     start_editing)
10077 {
10078   GtkRBTree *new_tree = NULL;
10079   GtkRBNode *new_node = NULL;
10080   GtkRBTree *cursor_tree = NULL;
10081   GtkRBNode *cursor_node = NULL;
10082   GtkTreePath *cursor_path = NULL;
10083   GtkTreeSelectMode mode = 0;
10084
10085   if (!gtk_widget_has_focus (GTK_WIDGET (tree_view)))
10086     return FALSE;
10087
10088   if (tree_view->priv->cursor)
10089     cursor_path = gtk_tree_row_reference_get_path (tree_view->priv->cursor);
10090
10091   if (cursor_path == NULL)
10092     return FALSE;
10093
10094   _gtk_tree_view_find_node (tree_view, cursor_path,
10095                             &cursor_tree, &cursor_node);
10096
10097   if (cursor_tree == NULL)
10098     {
10099       gtk_tree_path_free (cursor_path);
10100       return FALSE;
10101     }
10102
10103   if (!tree_view->priv->shift_pressed && start_editing &&
10104       tree_view->priv->focus_column)
10105     {
10106       if (gtk_tree_view_start_editing (tree_view, cursor_path))
10107         {
10108           gtk_tree_path_free (cursor_path);
10109           return TRUE;
10110         }
10111     }
10112
10113   if (tree_view->priv->ctrl_pressed)
10114     mode |= GTK_TREE_SELECT_MODE_TOGGLE;
10115   if (tree_view->priv->shift_pressed)
10116     mode |= GTK_TREE_SELECT_MODE_EXTEND;
10117
10118   _gtk_tree_selection_internal_select_node (tree_view->priv->selection,
10119                                             cursor_node,
10120                                             cursor_tree,
10121                                             cursor_path,
10122                                             mode,
10123                                             FALSE);
10124
10125   /* We bail out if the original (tree, node) don't exist anymore after
10126    * handling the selection-changed callback.  We do return TRUE because
10127    * the key press has been handled at this point.
10128    */
10129   _gtk_tree_view_find_node (tree_view, cursor_path, &new_tree, &new_node);
10130
10131   if (cursor_tree != new_tree || cursor_node != new_node)
10132     return FALSE;
10133
10134   gtk_tree_view_clamp_node_visible (tree_view, cursor_tree, cursor_node);
10135
10136   gtk_widget_grab_focus (GTK_WIDGET (tree_view));
10137   _gtk_tree_view_queue_draw_node (tree_view, cursor_tree, cursor_node, NULL);
10138
10139   if (!tree_view->priv->shift_pressed)
10140     gtk_tree_view_row_activated (tree_view, cursor_path,
10141                                  tree_view->priv->focus_column);
10142
10143   gtk_tree_path_free (cursor_path);
10144
10145   return TRUE;
10146 }
10147
10148 static gboolean
10149 gtk_tree_view_real_toggle_cursor_row (GtkTreeView *tree_view)
10150 {
10151   GtkRBTree *new_tree = NULL;
10152   GtkRBNode *new_node = NULL;
10153   GtkRBTree *cursor_tree = NULL;
10154   GtkRBNode *cursor_node = NULL;
10155   GtkTreePath *cursor_path = NULL;
10156
10157   if (!gtk_widget_has_focus (GTK_WIDGET (tree_view)))
10158     return FALSE;
10159
10160   cursor_path = NULL;
10161   if (tree_view->priv->cursor)
10162     cursor_path = gtk_tree_row_reference_get_path (tree_view->priv->cursor);
10163
10164   if (cursor_path == NULL)
10165     return FALSE;
10166
10167   _gtk_tree_view_find_node (tree_view, cursor_path,
10168                             &cursor_tree, &cursor_node);
10169   if (cursor_tree == NULL)
10170     {
10171       gtk_tree_path_free (cursor_path);
10172       return FALSE;
10173     }
10174
10175   _gtk_tree_selection_internal_select_node (tree_view->priv->selection,
10176                                             cursor_node,
10177                                             cursor_tree,
10178                                             cursor_path,
10179                                             GTK_TREE_SELECT_MODE_TOGGLE,
10180                                             FALSE);
10181
10182   /* We bail out if the original (tree, node) don't exist anymore after
10183    * handling the selection-changed callback.  We do return TRUE because
10184    * the key press has been handled at this point.
10185    */
10186   _gtk_tree_view_find_node (tree_view, cursor_path, &new_tree, &new_node);
10187
10188   if (cursor_tree != new_tree || cursor_node != new_node)
10189     return FALSE;
10190
10191   gtk_tree_view_clamp_node_visible (tree_view, cursor_tree, cursor_node);
10192
10193   gtk_widget_grab_focus (GTK_WIDGET (tree_view));
10194   gtk_tree_view_queue_draw_path (tree_view, cursor_path, NULL);
10195   gtk_tree_path_free (cursor_path);
10196
10197   return TRUE;
10198 }
10199
10200 static gboolean
10201 gtk_tree_view_real_expand_collapse_cursor_row (GtkTreeView *tree_view,
10202                                                gboolean     logical,
10203                                                gboolean     expand,
10204                                                gboolean     open_all)
10205 {
10206   GtkTreePath *cursor_path = NULL;
10207   GtkRBTree *tree;
10208   GtkRBNode *node;
10209
10210   if (!gtk_widget_has_focus (GTK_WIDGET (tree_view)))
10211     return FALSE;
10212
10213   cursor_path = NULL;
10214   if (tree_view->priv->cursor)
10215     cursor_path = gtk_tree_row_reference_get_path (tree_view->priv->cursor);
10216
10217   if (cursor_path == NULL)
10218     return FALSE;
10219
10220   if (_gtk_tree_view_find_node (tree_view, cursor_path, &tree, &node))
10221     return FALSE;
10222
10223   /* Don't handle the event if we aren't an expander */
10224   if (!((node->flags & GTK_RBNODE_IS_PARENT) == GTK_RBNODE_IS_PARENT))
10225     return FALSE;
10226
10227   if (!logical
10228       && gtk_widget_get_direction (GTK_WIDGET (tree_view)) == GTK_TEXT_DIR_RTL)
10229     expand = !expand;
10230
10231   if (expand)
10232     gtk_tree_view_real_expand_row (tree_view, cursor_path, tree, node, open_all, TRUE);
10233   else
10234     gtk_tree_view_real_collapse_row (tree_view, cursor_path, tree, node, TRUE);
10235
10236   gtk_tree_path_free (cursor_path);
10237
10238   return TRUE;
10239 }
10240
10241 static gboolean
10242 gtk_tree_view_real_select_cursor_parent (GtkTreeView *tree_view)
10243 {
10244   GtkRBTree *cursor_tree = NULL;
10245   GtkRBNode *cursor_node = NULL;
10246   GtkTreePath *cursor_path = NULL;
10247   GdkModifierType state;
10248
10249   if (!gtk_widget_has_focus (GTK_WIDGET (tree_view)))
10250     goto out;
10251
10252   cursor_path = NULL;
10253   if (tree_view->priv->cursor)
10254     cursor_path = gtk_tree_row_reference_get_path (tree_view->priv->cursor);
10255
10256   if (cursor_path == NULL)
10257     goto out;
10258
10259   _gtk_tree_view_find_node (tree_view, cursor_path,
10260                             &cursor_tree, &cursor_node);
10261   if (cursor_tree == NULL)
10262     {
10263       gtk_tree_path_free (cursor_path);
10264       goto out;
10265     }
10266
10267   if (cursor_tree->parent_node)
10268     {
10269       gtk_tree_view_queue_draw_path (tree_view, cursor_path, NULL);
10270       cursor_node = cursor_tree->parent_node;
10271       cursor_tree = cursor_tree->parent_tree;
10272
10273       gtk_tree_path_up (cursor_path);
10274
10275       if (gtk_get_current_event_state (&state))
10276         {
10277           if ((state & GDK_CONTROL_MASK) == GDK_CONTROL_MASK)
10278             tree_view->priv->ctrl_pressed = TRUE;
10279         }
10280
10281       gtk_tree_view_real_set_cursor (tree_view, cursor_path, TRUE, FALSE);
10282       gtk_tree_view_clamp_node_visible (tree_view, cursor_tree, cursor_node);
10283
10284       gtk_widget_grab_focus (GTK_WIDGET (tree_view));
10285       gtk_tree_view_queue_draw_path (tree_view, cursor_path, NULL);
10286       gtk_tree_path_free (cursor_path);
10287
10288       tree_view->priv->ctrl_pressed = FALSE;
10289
10290       return TRUE;
10291     }
10292
10293  out:
10294
10295   tree_view->priv->search_entry_avoid_unhandled_binding = TRUE;
10296   return FALSE;
10297 }
10298
10299 static gboolean
10300 gtk_tree_view_search_entry_flush_timeout (GtkTreeView *tree_view)
10301 {
10302   gtk_tree_view_search_dialog_hide (tree_view->priv->search_window, tree_view);
10303   tree_view->priv->typeselect_flush_timeout = 0;
10304
10305   return FALSE;
10306 }
10307
10308 /* Cut and paste from gtkwindow.c */
10309 static void
10310 send_focus_change (GtkWidget *widget,
10311                    gboolean   in)
10312 {
10313   GdkEvent *fevent = gdk_event_new (GDK_FOCUS_CHANGE);
10314
10315   g_object_ref (widget);
10316
10317  if (in)
10318     GTK_WIDGET_SET_FLAGS (widget, GTK_HAS_FOCUS);
10319   else
10320     GTK_WIDGET_UNSET_FLAGS (widget, GTK_HAS_FOCUS);
10321
10322   fevent->focus_change.type = GDK_FOCUS_CHANGE;
10323   fevent->focus_change.window = g_object_ref (widget->window);
10324   fevent->focus_change.in = in;
10325
10326   gtk_widget_event (widget, fevent);
10327
10328   g_object_notify (G_OBJECT (widget), "has-focus");
10329
10330   g_object_unref (widget);
10331   gdk_event_free (fevent);
10332 }
10333
10334 static void
10335 gtk_tree_view_ensure_interactive_directory (GtkTreeView *tree_view)
10336 {
10337   GtkWidget *frame, *vbox, *toplevel;
10338   GdkScreen *screen;
10339
10340   if (tree_view->priv->search_custom_entry_set)
10341     return;
10342
10343   toplevel = gtk_widget_get_toplevel (GTK_WIDGET (tree_view));
10344   screen = gtk_widget_get_screen (GTK_WIDGET (tree_view));
10345
10346    if (tree_view->priv->search_window != NULL)
10347      {
10348        if (GTK_WINDOW (toplevel)->group)
10349          gtk_window_group_add_window (GTK_WINDOW (toplevel)->group,
10350                                       GTK_WINDOW (tree_view->priv->search_window));
10351        else if (GTK_WINDOW (tree_view->priv->search_window)->group)
10352          gtk_window_group_remove_window (GTK_WINDOW (tree_view->priv->search_window)->group,
10353                                          GTK_WINDOW (tree_view->priv->search_window));
10354        gtk_window_set_screen (GTK_WINDOW (tree_view->priv->search_window), screen);
10355        return;
10356      }
10357
10358   tree_view->priv->search_window = gtk_window_new (GTK_WINDOW_POPUP);
10359   gtk_window_set_screen (GTK_WINDOW (tree_view->priv->search_window), screen);
10360
10361   if (GTK_WINDOW (toplevel)->group)
10362     gtk_window_group_add_window (GTK_WINDOW (toplevel)->group,
10363                                  GTK_WINDOW (tree_view->priv->search_window));
10364
10365   gtk_window_set_type_hint (GTK_WINDOW (tree_view->priv->search_window),
10366                             GDK_WINDOW_TYPE_HINT_UTILITY);
10367   gtk_window_set_modal (GTK_WINDOW (tree_view->priv->search_window), TRUE);
10368   g_signal_connect (tree_view->priv->search_window, "delete-event",
10369                     G_CALLBACK (gtk_tree_view_search_delete_event),
10370                     tree_view);
10371   g_signal_connect (tree_view->priv->search_window, "key-press-event",
10372                     G_CALLBACK (gtk_tree_view_search_key_press_event),
10373                     tree_view);
10374   g_signal_connect (tree_view->priv->search_window, "button-press-event",
10375                     G_CALLBACK (gtk_tree_view_search_button_press_event),
10376                     tree_view);
10377   g_signal_connect (tree_view->priv->search_window, "scroll-event",
10378                     G_CALLBACK (gtk_tree_view_search_scroll_event),
10379                     tree_view);
10380
10381   frame = gtk_frame_new (NULL);
10382   gtk_frame_set_shadow_type (GTK_FRAME (frame), GTK_SHADOW_ETCHED_IN);
10383   gtk_widget_show (frame);
10384   gtk_container_add (GTK_CONTAINER (tree_view->priv->search_window), frame);
10385
10386   vbox = gtk_vbox_new (FALSE, 0);
10387   gtk_widget_show (vbox);
10388   gtk_container_add (GTK_CONTAINER (frame), vbox);
10389   gtk_container_set_border_width (GTK_CONTAINER (vbox), 3);
10390
10391   /* add entry */
10392   tree_view->priv->search_entry = gtk_entry_new ();
10393   gtk_widget_show (tree_view->priv->search_entry);
10394   g_signal_connect (tree_view->priv->search_entry, "populate-popup",
10395                     G_CALLBACK (gtk_tree_view_search_disable_popdown),
10396                     tree_view);
10397   g_signal_connect (tree_view->priv->search_entry,
10398                     "activate", G_CALLBACK (gtk_tree_view_search_activate),
10399                     tree_view);
10400   g_signal_connect (GTK_ENTRY (tree_view->priv->search_entry)->im_context,
10401                     "preedit-changed",
10402                     G_CALLBACK (gtk_tree_view_search_preedit_changed),
10403                     tree_view);
10404   gtk_container_add (GTK_CONTAINER (vbox),
10405                      tree_view->priv->search_entry);
10406
10407   gtk_widget_realize (tree_view->priv->search_entry);
10408 }
10409
10410 /* Pops up the interactive search entry.  If keybinding is TRUE then the user
10411  * started this by typing the start_interactive_search keybinding.  Otherwise, it came from
10412  */
10413 static gboolean
10414 gtk_tree_view_real_start_interactive_search (GtkTreeView *tree_view,
10415                                              gboolean     keybinding)
10416 {
10417   /* We only start interactive search if we have focus or the columns
10418    * have focus.  If one of our children have focus, we don't want to
10419    * start the search.
10420    */
10421   GList *list;
10422   gboolean found_focus = FALSE;
10423   GtkWidgetClass *entry_parent_class;
10424
10425   if (!tree_view->priv->enable_search && !keybinding)
10426     return FALSE;
10427
10428   if (tree_view->priv->search_custom_entry_set)
10429     return FALSE;
10430
10431   if (tree_view->priv->search_window != NULL &&
10432       gtk_widget_get_visible (tree_view->priv->search_window))
10433     return TRUE;
10434
10435   for (list = tree_view->priv->columns; list; list = list->next)
10436     {
10437       GtkTreeViewColumn *column;
10438
10439       column = list->data;
10440       if (! column->visible)
10441         continue;
10442
10443       if (gtk_widget_has_focus (column->button))
10444         {
10445           found_focus = TRUE;
10446           break;
10447         }
10448     }
10449
10450   if (gtk_widget_has_focus (GTK_WIDGET (tree_view)))
10451     found_focus = TRUE;
10452
10453   if (!found_focus)
10454     return FALSE;
10455
10456   if (tree_view->priv->search_column < 0)
10457     return FALSE;
10458
10459   gtk_tree_view_ensure_interactive_directory (tree_view);
10460
10461   if (keybinding)
10462     gtk_entry_set_text (GTK_ENTRY (tree_view->priv->search_entry), "");
10463
10464   /* done, show it */
10465   tree_view->priv->search_position_func (tree_view, tree_view->priv->search_window, tree_view->priv->search_position_user_data);
10466   gtk_widget_show (tree_view->priv->search_window);
10467   if (tree_view->priv->search_entry_changed_id == 0)
10468     {
10469       tree_view->priv->search_entry_changed_id =
10470         g_signal_connect (tree_view->priv->search_entry, "changed",
10471                           G_CALLBACK (gtk_tree_view_search_init),
10472                           tree_view);
10473     }
10474
10475   tree_view->priv->typeselect_flush_timeout =
10476     gdk_threads_add_timeout (GTK_TREE_VIEW_SEARCH_DIALOG_TIMEOUT,
10477                    (GSourceFunc) gtk_tree_view_search_entry_flush_timeout,
10478                    tree_view);
10479
10480   /* Grab focus will select all the text.  We don't want that to happen, so we
10481    * call the parent instance and bypass the selection change.  This is probably
10482    * really non-kosher. */
10483   entry_parent_class = g_type_class_peek_parent (GTK_ENTRY_GET_CLASS (tree_view->priv->search_entry));
10484   (entry_parent_class->grab_focus) (tree_view->priv->search_entry);
10485
10486   /* send focus-in event */
10487   send_focus_change (tree_view->priv->search_entry, TRUE);
10488
10489   /* search first matching iter */
10490   gtk_tree_view_search_init (tree_view->priv->search_entry, tree_view);
10491
10492   return TRUE;
10493 }
10494
10495 static gboolean
10496 gtk_tree_view_start_interactive_search (GtkTreeView *tree_view)
10497 {
10498   return gtk_tree_view_real_start_interactive_search (tree_view, TRUE);
10499 }
10500
10501 /* this function returns the new width of the column being resized given
10502  * the column and x position of the cursor; the x cursor position is passed
10503  * in as a pointer and automagicly corrected if it's beyond min/max limits
10504  */
10505 static gint
10506 gtk_tree_view_new_column_width (GtkTreeView *tree_view,
10507                                 gint       i,
10508                                 gint      *x)
10509 {
10510   GtkTreeViewColumn *column;
10511   gint width;
10512   gboolean rtl;
10513
10514   /* first translate the x position from widget->window
10515    * to clist->clist_window
10516    */
10517   rtl = (gtk_widget_get_direction (GTK_WIDGET (tree_view)) == GTK_TEXT_DIR_RTL);
10518   column = g_list_nth (tree_view->priv->columns, i)->data;
10519   width = rtl ? (column->button->allocation.x + column->button->allocation.width - *x) : (*x - column->button->allocation.x);
10520
10521   /* Clamp down the value */
10522   if (column->min_width == -1)
10523     width = MAX (column->button->requisition.width,
10524                  width);
10525   else
10526     width = MAX (column->min_width,
10527                  width);
10528   if (column->max_width != -1)
10529     width = MIN (width, column->max_width);
10530
10531   *x = rtl ? (column->button->allocation.x + column->button->allocation.width - width) : (column->button->allocation.x + width);
10532
10533   return width;
10534 }
10535
10536
10537 /* FIXME this adjust_allocation is a big cut-and-paste from
10538  * GtkCList, needs to be some "official" way to do this
10539  * factored out.
10540  */
10541 typedef struct
10542 {
10543   GdkWindow *window;
10544   int dx;
10545   int dy;
10546 } ScrollData;
10547
10548 /* The window to which widget->window is relative */
10549 #define ALLOCATION_WINDOW(widget)               \
10550    (!gtk_widget_get_has_window (widget) ?               \
10551     (widget)->window :                          \
10552      gdk_window_get_parent ((widget)->window))
10553
10554 static void
10555 adjust_allocation_recurse (GtkWidget *widget,
10556                            gpointer   data)
10557 {
10558   ScrollData *scroll_data = data;
10559
10560   /* Need to really size allocate instead of just poking
10561    * into widget->allocation if the widget is not realized.
10562    * FIXME someone figure out why this was.
10563    */
10564   if (!GTK_WIDGET_REALIZED (widget))
10565     {
10566       if (gtk_widget_get_visible (widget))
10567         {
10568           GdkRectangle tmp_rectangle = widget->allocation;
10569           tmp_rectangle.x += scroll_data->dx;
10570           tmp_rectangle.y += scroll_data->dy;
10571
10572           gtk_widget_size_allocate (widget, &tmp_rectangle);
10573         }
10574     }
10575   else
10576     {
10577       if (ALLOCATION_WINDOW (widget) == scroll_data->window)
10578         {
10579           widget->allocation.x += scroll_data->dx;
10580           widget->allocation.y += scroll_data->dy;
10581
10582           if (GTK_IS_CONTAINER (widget))
10583             gtk_container_forall (GTK_CONTAINER (widget),
10584                                   adjust_allocation_recurse,
10585                                   data);
10586         }
10587     }
10588 }
10589
10590 static void
10591 adjust_allocation (GtkWidget *widget,
10592                    int        dx,
10593                    int        dy)
10594 {
10595   ScrollData scroll_data;
10596
10597   if (GTK_WIDGET_REALIZED (widget))
10598     scroll_data.window = ALLOCATION_WINDOW (widget);
10599   else
10600     scroll_data.window = NULL;
10601
10602   scroll_data.dx = dx;
10603   scroll_data.dy = dy;
10604
10605   adjust_allocation_recurse (widget, &scroll_data);
10606 }
10607
10608 /* Callbacks */
10609 static void
10610 gtk_tree_view_adjustment_changed (GtkAdjustment *adjustment,
10611                                   GtkTreeView   *tree_view)
10612 {
10613   if (GTK_WIDGET_REALIZED (tree_view))
10614     {
10615       gint dy;
10616
10617       gdk_window_move (tree_view->priv->bin_window,
10618                        - tree_view->priv->hadjustment->value,
10619                        TREE_VIEW_HEADER_HEIGHT (tree_view));
10620       gdk_window_move (tree_view->priv->header_window,
10621                        - tree_view->priv->hadjustment->value,
10622                        0);
10623       dy = tree_view->priv->dy - (int) tree_view->priv->vadjustment->value;
10624       if (dy)
10625         {
10626           update_prelight (tree_view,
10627                            tree_view->priv->event_last_x,
10628                            tree_view->priv->event_last_y - dy);
10629
10630           if (tree_view->priv->edited_column &&
10631               GTK_IS_WIDGET (tree_view->priv->edited_column->editable_widget))
10632             {
10633               GList *list;
10634               GtkWidget *widget;
10635               GtkTreeViewChild *child = NULL;
10636
10637               widget = GTK_WIDGET (tree_view->priv->edited_column->editable_widget);
10638               adjust_allocation (widget, 0, dy);
10639
10640               for (list = tree_view->priv->children; list; list = list->next)
10641                 {
10642                   child = (GtkTreeViewChild *)list->data;
10643                   if (child->widget == widget)
10644                     {
10645                       child->y += dy;
10646                       break;
10647                     }
10648                 }
10649             }
10650         }
10651       gdk_window_scroll (tree_view->priv->bin_window, 0, dy);
10652
10653       if (tree_view->priv->dy != (int) tree_view->priv->vadjustment->value)
10654         {
10655           /* update our dy and top_row */
10656           tree_view->priv->dy = (int) tree_view->priv->vadjustment->value;
10657
10658           if (!tree_view->priv->in_top_row_to_dy)
10659             gtk_tree_view_dy_to_top_row (tree_view);
10660         }
10661
10662       gdk_window_process_updates (tree_view->priv->header_window, TRUE);
10663       gdk_window_process_updates (tree_view->priv->bin_window, TRUE);
10664     }
10665 }
10666
10667 \f
10668
10669 /* Public methods
10670  */
10671
10672 /**
10673  * gtk_tree_view_new:
10674  *
10675  * Creates a new #GtkTreeView widget.
10676  *
10677  * Return value: A newly created #GtkTreeView widget.
10678  **/
10679 GtkWidget *
10680 gtk_tree_view_new (void)
10681 {
10682   return g_object_new (GTK_TYPE_TREE_VIEW, NULL);
10683 }
10684
10685 /**
10686  * gtk_tree_view_new_with_model:
10687  * @model: the model.
10688  *
10689  * Creates a new #GtkTreeView widget with the model initialized to @model.
10690  *
10691  * Return value: A newly created #GtkTreeView widget.
10692  **/
10693 GtkWidget *
10694 gtk_tree_view_new_with_model (GtkTreeModel *model)
10695 {
10696   return g_object_new (GTK_TYPE_TREE_VIEW, "model", model, NULL);
10697 }
10698
10699 /* Public Accessors
10700  */
10701
10702 /**
10703  * gtk_tree_view_get_model:
10704  * @tree_view: a #GtkTreeView
10705  *
10706  * Returns the model the #GtkTreeView is based on.  Returns %NULL if the
10707  * model is unset.
10708  *
10709  * Return value: A #GtkTreeModel, or %NULL if none is currently being used.
10710  **/
10711 GtkTreeModel *
10712 gtk_tree_view_get_model (GtkTreeView *tree_view)
10713 {
10714   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), NULL);
10715
10716   return tree_view->priv->model;
10717 }
10718
10719 /**
10720  * gtk_tree_view_set_model:
10721  * @tree_view: A #GtkTreeNode.
10722  * @model: (allow-none): The model.
10723  *
10724  * Sets the model for a #GtkTreeView.  If the @tree_view already has a model
10725  * set, it will remove it before setting the new model.  If @model is %NULL,
10726  * then it will unset the old model.
10727  **/
10728 void
10729 gtk_tree_view_set_model (GtkTreeView  *tree_view,
10730                          GtkTreeModel *model)
10731 {
10732   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
10733   g_return_if_fail (model == NULL || GTK_IS_TREE_MODEL (model));
10734
10735   if (model == tree_view->priv->model)
10736     return;
10737
10738   if (tree_view->priv->scroll_to_path)
10739     {
10740       gtk_tree_row_reference_free (tree_view->priv->scroll_to_path);
10741       tree_view->priv->scroll_to_path = NULL;
10742     }
10743
10744   if (tree_view->priv->model)
10745     {
10746       GList *tmplist = tree_view->priv->columns;
10747
10748       gtk_tree_view_unref_and_check_selection_tree (tree_view, tree_view->priv->tree);
10749       gtk_tree_view_stop_editing (tree_view, TRUE);
10750
10751       remove_expand_collapse_timeout (tree_view);
10752
10753       g_signal_handlers_disconnect_by_func (tree_view->priv->model,
10754                                             gtk_tree_view_row_changed,
10755                                             tree_view);
10756       g_signal_handlers_disconnect_by_func (tree_view->priv->model,
10757                                             gtk_tree_view_row_inserted,
10758                                             tree_view);
10759       g_signal_handlers_disconnect_by_func (tree_view->priv->model,
10760                                             gtk_tree_view_row_has_child_toggled,
10761                                             tree_view);
10762       g_signal_handlers_disconnect_by_func (tree_view->priv->model,
10763                                             gtk_tree_view_row_deleted,
10764                                             tree_view);
10765       g_signal_handlers_disconnect_by_func (tree_view->priv->model,
10766                                             gtk_tree_view_rows_reordered,
10767                                             tree_view);
10768
10769       for (; tmplist; tmplist = tmplist->next)
10770         _gtk_tree_view_column_unset_model (tmplist->data,
10771                                            tree_view->priv->model);
10772
10773       if (tree_view->priv->tree)
10774         gtk_tree_view_free_rbtree (tree_view);
10775
10776       gtk_tree_row_reference_free (tree_view->priv->drag_dest_row);
10777       tree_view->priv->drag_dest_row = NULL;
10778       gtk_tree_row_reference_free (tree_view->priv->cursor);
10779       tree_view->priv->cursor = NULL;
10780       gtk_tree_row_reference_free (tree_view->priv->anchor);
10781       tree_view->priv->anchor = NULL;
10782       gtk_tree_row_reference_free (tree_view->priv->top_row);
10783       tree_view->priv->top_row = NULL;
10784       gtk_tree_row_reference_free (tree_view->priv->scroll_to_path);
10785       tree_view->priv->scroll_to_path = NULL;
10786
10787       tree_view->priv->scroll_to_column = NULL;
10788
10789       g_object_unref (tree_view->priv->model);
10790
10791       tree_view->priv->search_column = -1;
10792       tree_view->priv->fixed_height_check = 0;
10793       tree_view->priv->fixed_height = -1;
10794       tree_view->priv->dy = tree_view->priv->top_row_dy = 0;
10795       tree_view->priv->last_button_x = -1;
10796       tree_view->priv->last_button_y = -1;
10797     }
10798
10799   tree_view->priv->model = model;
10800
10801   if (tree_view->priv->model)
10802     {
10803       gint i;
10804       GtkTreePath *path;
10805       GtkTreeIter iter;
10806       GtkTreeModelFlags flags;
10807
10808       if (tree_view->priv->search_column == -1)
10809         {
10810           for (i = 0; i < gtk_tree_model_get_n_columns (model); i++)
10811             {
10812               GType type = gtk_tree_model_get_column_type (model, i);
10813
10814               if (g_value_type_transformable (type, G_TYPE_STRING))
10815                 {
10816                   tree_view->priv->search_column = i;
10817                   break;
10818                 }
10819             }
10820         }
10821
10822       g_object_ref (tree_view->priv->model);
10823       g_signal_connect (tree_view->priv->model,
10824                         "row-changed",
10825                         G_CALLBACK (gtk_tree_view_row_changed),
10826                         tree_view);
10827       g_signal_connect (tree_view->priv->model,
10828                         "row-inserted",
10829                         G_CALLBACK (gtk_tree_view_row_inserted),
10830                         tree_view);
10831       g_signal_connect (tree_view->priv->model,
10832                         "row-has-child-toggled",
10833                         G_CALLBACK (gtk_tree_view_row_has_child_toggled),
10834                         tree_view);
10835       g_signal_connect (tree_view->priv->model,
10836                         "row-deleted",
10837                         G_CALLBACK (gtk_tree_view_row_deleted),
10838                         tree_view);
10839       g_signal_connect (tree_view->priv->model,
10840                         "rows-reordered",
10841                         G_CALLBACK (gtk_tree_view_rows_reordered),
10842                         tree_view);
10843
10844       flags = gtk_tree_model_get_flags (tree_view->priv->model);
10845       if ((flags & GTK_TREE_MODEL_LIST_ONLY) == GTK_TREE_MODEL_LIST_ONLY)
10846         GTK_TREE_VIEW_SET_FLAG (tree_view, GTK_TREE_VIEW_IS_LIST);
10847       else
10848         GTK_TREE_VIEW_UNSET_FLAG (tree_view, GTK_TREE_VIEW_IS_LIST);
10849
10850       path = gtk_tree_path_new_first ();
10851       if (gtk_tree_model_get_iter (tree_view->priv->model, &iter, path))
10852         {
10853           tree_view->priv->tree = _gtk_rbtree_new ();
10854           gtk_tree_view_build_tree (tree_view, tree_view->priv->tree, &iter, 1, FALSE);
10855         }
10856       gtk_tree_path_free (path);
10857
10858       /*  FIXME: do I need to do this? gtk_tree_view_create_buttons (tree_view); */
10859       install_presize_handler (tree_view);
10860     }
10861
10862   g_object_notify (G_OBJECT (tree_view), "model");
10863
10864   if (tree_view->priv->selection)
10865   _gtk_tree_selection_emit_changed (tree_view->priv->selection);
10866
10867   if (GTK_WIDGET_REALIZED (tree_view))
10868     gtk_widget_queue_resize (GTK_WIDGET (tree_view));
10869 }
10870
10871 /**
10872  * gtk_tree_view_get_selection:
10873  * @tree_view: A #GtkTreeView.
10874  *
10875  * Gets the #GtkTreeSelection associated with @tree_view.
10876  *
10877  * Return value: A #GtkTreeSelection object.
10878  **/
10879 GtkTreeSelection *
10880 gtk_tree_view_get_selection (GtkTreeView *tree_view)
10881 {
10882   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), NULL);
10883
10884   return tree_view->priv->selection;
10885 }
10886
10887 /**
10888  * gtk_tree_view_get_hadjustment:
10889  * @tree_view: A #GtkTreeView
10890  *
10891  * Gets the #GtkAdjustment currently being used for the horizontal aspect.
10892  *
10893  * Return value: A #GtkAdjustment object, or %NULL if none is currently being
10894  * used.
10895  **/
10896 GtkAdjustment *
10897 gtk_tree_view_get_hadjustment (GtkTreeView *tree_view)
10898 {
10899   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), NULL);
10900
10901   if (tree_view->priv->hadjustment == NULL)
10902     gtk_tree_view_set_hadjustment (tree_view, NULL);
10903
10904   return tree_view->priv->hadjustment;
10905 }
10906
10907 /**
10908  * gtk_tree_view_set_hadjustment:
10909  * @tree_view: A #GtkTreeView
10910  * @adjustment: (allow-none): The #GtkAdjustment to set, or %NULL
10911  *
10912  * Sets the #GtkAdjustment for the current horizontal aspect.
10913  **/
10914 void
10915 gtk_tree_view_set_hadjustment (GtkTreeView   *tree_view,
10916                                GtkAdjustment *adjustment)
10917 {
10918   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
10919
10920   gtk_tree_view_set_adjustments (tree_view,
10921                                  adjustment,
10922                                  tree_view->priv->vadjustment);
10923
10924   g_object_notify (G_OBJECT (tree_view), "hadjustment");
10925 }
10926
10927 /**
10928  * gtk_tree_view_get_vadjustment:
10929  * @tree_view: A #GtkTreeView
10930  *
10931  * Gets the #GtkAdjustment currently being used for the vertical aspect.
10932  *
10933  * Return value: A #GtkAdjustment object, or %NULL if none is currently being
10934  * used.
10935  **/
10936 GtkAdjustment *
10937 gtk_tree_view_get_vadjustment (GtkTreeView *tree_view)
10938 {
10939   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), NULL);
10940
10941   if (tree_view->priv->vadjustment == NULL)
10942     gtk_tree_view_set_vadjustment (tree_view, NULL);
10943
10944   return tree_view->priv->vadjustment;
10945 }
10946
10947 /**
10948  * gtk_tree_view_set_vadjustment:
10949  * @tree_view: A #GtkTreeView
10950  * @adjustment: (allow-none): The #GtkAdjustment to set, or %NULL
10951  *
10952  * Sets the #GtkAdjustment for the current vertical aspect.
10953  **/
10954 void
10955 gtk_tree_view_set_vadjustment (GtkTreeView   *tree_view,
10956                                GtkAdjustment *adjustment)
10957 {
10958   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
10959
10960   gtk_tree_view_set_adjustments (tree_view,
10961                                  tree_view->priv->hadjustment,
10962                                  adjustment);
10963
10964   g_object_notify (G_OBJECT (tree_view), "vadjustment");
10965 }
10966
10967 /* Column and header operations */
10968
10969 /**
10970  * gtk_tree_view_get_headers_visible:
10971  * @tree_view: A #GtkTreeView.
10972  *
10973  * Returns %TRUE if the headers on the @tree_view are visible.
10974  *
10975  * Return value: Whether the headers are visible or not.
10976  **/
10977 gboolean
10978 gtk_tree_view_get_headers_visible (GtkTreeView *tree_view)
10979 {
10980   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), FALSE);
10981
10982   return GTK_TREE_VIEW_FLAG_SET (tree_view, GTK_TREE_VIEW_HEADERS_VISIBLE);
10983 }
10984
10985 /**
10986  * gtk_tree_view_set_headers_visible:
10987  * @tree_view: A #GtkTreeView.
10988  * @headers_visible: %TRUE if the headers are visible
10989  *
10990  * Sets the visibility state of the headers.
10991  **/
10992 void
10993 gtk_tree_view_set_headers_visible (GtkTreeView *tree_view,
10994                                    gboolean     headers_visible)
10995 {
10996   gint x, y;
10997   GList *list;
10998   GtkTreeViewColumn *column;
10999
11000   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
11001
11002   headers_visible = !! headers_visible;
11003
11004   if (GTK_TREE_VIEW_FLAG_SET (tree_view, GTK_TREE_VIEW_HEADERS_VISIBLE) == headers_visible)
11005     return;
11006
11007   if (headers_visible)
11008     GTK_TREE_VIEW_SET_FLAG (tree_view, GTK_TREE_VIEW_HEADERS_VISIBLE);
11009   else
11010     GTK_TREE_VIEW_UNSET_FLAG (tree_view, GTK_TREE_VIEW_HEADERS_VISIBLE);
11011
11012   if (GTK_WIDGET_REALIZED (tree_view))
11013     {
11014       gdk_window_get_position (tree_view->priv->bin_window, &x, &y);
11015       if (headers_visible)
11016         {
11017           gdk_window_move_resize (tree_view->priv->bin_window, x, y  + TREE_VIEW_HEADER_HEIGHT (tree_view), tree_view->priv->width, GTK_WIDGET (tree_view)->allocation.height -  + TREE_VIEW_HEADER_HEIGHT (tree_view));
11018
11019           if (gtk_widget_get_mapped (GTK_WIDGET (tree_view)))
11020             gtk_tree_view_map_buttons (tree_view);
11021         }
11022       else
11023         {
11024           gdk_window_move_resize (tree_view->priv->bin_window, x, y, tree_view->priv->width, tree_view->priv->height);
11025
11026           for (list = tree_view->priv->columns; list; list = list->next)
11027             {
11028               column = list->data;
11029               gtk_widget_unmap (column->button);
11030             }
11031           gdk_window_hide (tree_view->priv->header_window);
11032         }
11033     }
11034
11035   tree_view->priv->vadjustment->page_size = GTK_WIDGET (tree_view)->allocation.height - TREE_VIEW_HEADER_HEIGHT (tree_view);
11036   tree_view->priv->vadjustment->page_increment = (GTK_WIDGET (tree_view)->allocation.height - TREE_VIEW_HEADER_HEIGHT (tree_view)) / 2;
11037   tree_view->priv->vadjustment->lower = 0;
11038   tree_view->priv->vadjustment->upper = tree_view->priv->height;
11039   gtk_adjustment_changed (tree_view->priv->vadjustment);
11040
11041   gtk_widget_queue_resize (GTK_WIDGET (tree_view));
11042
11043   g_object_notify (G_OBJECT (tree_view), "headers-visible");
11044 }
11045
11046 /**
11047  * gtk_tree_view_columns_autosize:
11048  * @tree_view: A #GtkTreeView.
11049  *
11050  * Resizes all columns to their optimal width. Only works after the
11051  * treeview has been realized.
11052  **/
11053 void
11054 gtk_tree_view_columns_autosize (GtkTreeView *tree_view)
11055 {
11056   gboolean dirty = FALSE;
11057   GList *list;
11058   GtkTreeViewColumn *column;
11059
11060   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
11061
11062   for (list = tree_view->priv->columns; list; list = list->next)
11063     {
11064       column = list->data;
11065       if (column->column_type == GTK_TREE_VIEW_COLUMN_AUTOSIZE)
11066         continue;
11067       _gtk_tree_view_column_cell_set_dirty (column, TRUE);
11068       dirty = TRUE;
11069     }
11070
11071   if (dirty)
11072     gtk_widget_queue_resize (GTK_WIDGET (tree_view));
11073 }
11074
11075 /**
11076  * gtk_tree_view_set_headers_clickable:
11077  * @tree_view: A #GtkTreeView.
11078  * @setting: %TRUE if the columns are clickable.
11079  *
11080  * Allow the column title buttons to be clicked.
11081  **/
11082 void
11083 gtk_tree_view_set_headers_clickable (GtkTreeView *tree_view,
11084                                      gboolean   setting)
11085 {
11086   GList *list;
11087
11088   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
11089
11090   for (list = tree_view->priv->columns; list; list = list->next)
11091     gtk_tree_view_column_set_clickable (GTK_TREE_VIEW_COLUMN (list->data), setting);
11092
11093   g_object_notify (G_OBJECT (tree_view), "headers-clickable");
11094 }
11095
11096
11097 /**
11098  * gtk_tree_view_get_headers_clickable:
11099  * @tree_view: A #GtkTreeView.
11100  *
11101  * Returns whether all header columns are clickable.
11102  *
11103  * Return value: %TRUE if all header columns are clickable, otherwise %FALSE
11104  *
11105  * Since: 2.10
11106  **/
11107 gboolean
11108 gtk_tree_view_get_headers_clickable (GtkTreeView *tree_view)
11109 {
11110   GList *list;
11111
11112   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), FALSE);
11113
11114   for (list = tree_view->priv->columns; list; list = list->next)
11115     if (!GTK_TREE_VIEW_COLUMN (list->data)->clickable)
11116       return FALSE;
11117
11118   return TRUE;
11119 }
11120
11121 /**
11122  * gtk_tree_view_set_rules_hint
11123  * @tree_view: a #GtkTreeView
11124  * @setting: %TRUE if the tree requires reading across rows
11125  *
11126  * This function tells GTK+ that the user interface for your
11127  * application requires users to read across tree rows and associate
11128  * cells with one another. By default, GTK+ will then render the tree
11129  * with alternating row colors. Do <emphasis>not</emphasis> use it
11130  * just because you prefer the appearance of the ruled tree; that's a
11131  * question for the theme. Some themes will draw tree rows in
11132  * alternating colors even when rules are turned off, and users who
11133  * prefer that appearance all the time can choose those themes. You
11134  * should call this function only as a <emphasis>semantic</emphasis>
11135  * hint to the theme engine that your tree makes alternating colors
11136  * useful from a functional standpoint (since it has lots of columns,
11137  * generally).
11138  *
11139  **/
11140 void
11141 gtk_tree_view_set_rules_hint (GtkTreeView  *tree_view,
11142                               gboolean      setting)
11143 {
11144   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
11145
11146   setting = setting != FALSE;
11147
11148   if (tree_view->priv->has_rules != setting)
11149     {
11150       tree_view->priv->has_rules = setting;
11151       gtk_widget_queue_draw (GTK_WIDGET (tree_view));
11152     }
11153
11154   g_object_notify (G_OBJECT (tree_view), "rules-hint");
11155 }
11156
11157 /**
11158  * gtk_tree_view_get_rules_hint
11159  * @tree_view: a #GtkTreeView
11160  *
11161  * Gets the setting set by gtk_tree_view_set_rules_hint().
11162  *
11163  * Return value: %TRUE if rules are useful for the user of this tree
11164  **/
11165 gboolean
11166 gtk_tree_view_get_rules_hint (GtkTreeView  *tree_view)
11167 {
11168   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), FALSE);
11169
11170   return tree_view->priv->has_rules;
11171 }
11172
11173 /* Public Column functions
11174  */
11175
11176 /**
11177  * gtk_tree_view_append_column:
11178  * @tree_view: A #GtkTreeView.
11179  * @column: The #GtkTreeViewColumn to add.
11180  *
11181  * Appends @column to the list of columns. If @tree_view has "fixed_height"
11182  * mode enabled, then @column must have its "sizing" property set to be
11183  * GTK_TREE_VIEW_COLUMN_FIXED.
11184  *
11185  * Return value: The number of columns in @tree_view after appending.
11186  **/
11187 gint
11188 gtk_tree_view_append_column (GtkTreeView       *tree_view,
11189                              GtkTreeViewColumn *column)
11190 {
11191   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), -1);
11192   g_return_val_if_fail (GTK_IS_TREE_VIEW_COLUMN (column), -1);
11193   g_return_val_if_fail (column->tree_view == NULL, -1);
11194
11195   return gtk_tree_view_insert_column (tree_view, column, -1);
11196 }
11197
11198
11199 /**
11200  * gtk_tree_view_remove_column:
11201  * @tree_view: A #GtkTreeView.
11202  * @column: The #GtkTreeViewColumn to remove.
11203  *
11204  * Removes @column from @tree_view.
11205  *
11206  * Return value: The number of columns in @tree_view after removing.
11207  **/
11208 gint
11209 gtk_tree_view_remove_column (GtkTreeView       *tree_view,
11210                              GtkTreeViewColumn *column)
11211 {
11212   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), -1);
11213   g_return_val_if_fail (GTK_IS_TREE_VIEW_COLUMN (column), -1);
11214   g_return_val_if_fail (column->tree_view == GTK_WIDGET (tree_view), -1);
11215
11216   if (tree_view->priv->focus_column == column)
11217     tree_view->priv->focus_column = NULL;
11218
11219   if (tree_view->priv->edited_column == column)
11220     {
11221       gtk_tree_view_stop_editing (tree_view, TRUE);
11222
11223       /* no need to, but just to be sure ... */
11224       tree_view->priv->edited_column = NULL;
11225     }
11226
11227   if (tree_view->priv->expander_column == column)
11228     tree_view->priv->expander_column = NULL;
11229
11230   g_signal_handlers_disconnect_by_func (column,
11231                                         G_CALLBACK (column_sizing_notify),
11232                                         tree_view);
11233
11234   _gtk_tree_view_column_unset_tree_view (column);
11235
11236   tree_view->priv->columns = g_list_remove (tree_view->priv->columns, column);
11237   tree_view->priv->n_columns--;
11238
11239   if (GTK_WIDGET_REALIZED (tree_view))
11240     {
11241       GList *list;
11242
11243       _gtk_tree_view_column_unrealize_button (column);
11244       for (list = tree_view->priv->columns; list; list = list->next)
11245         {
11246           GtkTreeViewColumn *tmp_column;
11247
11248           tmp_column = GTK_TREE_VIEW_COLUMN (list->data);
11249           if (tmp_column->visible)
11250             _gtk_tree_view_column_cell_set_dirty (tmp_column, TRUE);
11251         }
11252
11253       if (tree_view->priv->n_columns == 0 &&
11254           gtk_tree_view_get_headers_visible (tree_view))
11255         gdk_window_hide (tree_view->priv->header_window);
11256
11257       gtk_widget_queue_resize (GTK_WIDGET (tree_view));
11258     }
11259
11260   g_object_unref (column);
11261   g_signal_emit (tree_view, tree_view_signals[COLUMNS_CHANGED], 0);
11262
11263   return tree_view->priv->n_columns;
11264 }
11265
11266 /**
11267  * gtk_tree_view_insert_column:
11268  * @tree_view: A #GtkTreeView.
11269  * @column: The #GtkTreeViewColumn to be inserted.
11270  * @position: The position to insert @column in.
11271  *
11272  * This inserts the @column into the @tree_view at @position.  If @position is
11273  * -1, then the column is inserted at the end. If @tree_view has
11274  * "fixed_height" mode enabled, then @column must have its "sizing" property
11275  * set to be GTK_TREE_VIEW_COLUMN_FIXED.
11276  *
11277  * Return value: The number of columns in @tree_view after insertion.
11278  **/
11279 gint
11280 gtk_tree_view_insert_column (GtkTreeView       *tree_view,
11281                              GtkTreeViewColumn *column,
11282                              gint               position)
11283 {
11284   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), -1);
11285   g_return_val_if_fail (GTK_IS_TREE_VIEW_COLUMN (column), -1);
11286   g_return_val_if_fail (column->tree_view == NULL, -1);
11287
11288   if (tree_view->priv->fixed_height_mode)
11289     g_return_val_if_fail (gtk_tree_view_column_get_sizing (column)
11290                           == GTK_TREE_VIEW_COLUMN_FIXED, -1);
11291
11292   g_object_ref_sink (column);
11293
11294   if (tree_view->priv->n_columns == 0 &&
11295       GTK_WIDGET_REALIZED (tree_view) &&
11296       gtk_tree_view_get_headers_visible (tree_view))
11297     {
11298       gdk_window_show (tree_view->priv->header_window);
11299     }
11300
11301   g_signal_connect (column, "notify::sizing",
11302                     G_CALLBACK (column_sizing_notify), tree_view);
11303
11304   tree_view->priv->columns = g_list_insert (tree_view->priv->columns,
11305                                             column, position);
11306   tree_view->priv->n_columns++;
11307
11308   _gtk_tree_view_column_set_tree_view (column, tree_view);
11309
11310   if (GTK_WIDGET_REALIZED (tree_view))
11311     {
11312       GList *list;
11313
11314       _gtk_tree_view_column_realize_button (column);
11315
11316       for (list = tree_view->priv->columns; list; list = list->next)
11317         {
11318           column = GTK_TREE_VIEW_COLUMN (list->data);
11319           if (column->visible)
11320             _gtk_tree_view_column_cell_set_dirty (column, TRUE);
11321         }
11322       gtk_widget_queue_resize (GTK_WIDGET (tree_view));
11323     }
11324
11325   g_signal_emit (tree_view, tree_view_signals[COLUMNS_CHANGED], 0);
11326
11327   return tree_view->priv->n_columns;
11328 }
11329
11330 /**
11331  * gtk_tree_view_insert_column_with_attributes:
11332  * @tree_view: A #GtkTreeView
11333  * @position: The position to insert the new column in.
11334  * @title: The title to set the header to.
11335  * @cell: The #GtkCellRenderer.
11336  * @Varargs: A %NULL-terminated list of attributes.
11337  *
11338  * Creates a new #GtkTreeViewColumn and inserts it into the @tree_view at
11339  * @position.  If @position is -1, then the newly created column is inserted at
11340  * the end.  The column is initialized with the attributes given. If @tree_view
11341  * has "fixed_height" mode enabled, then the new column will have its sizing
11342  * property set to be GTK_TREE_VIEW_COLUMN_FIXED.
11343  *
11344  * Return value: The number of columns in @tree_view after insertion.
11345  **/
11346 gint
11347 gtk_tree_view_insert_column_with_attributes (GtkTreeView     *tree_view,
11348                                              gint             position,
11349                                              const gchar     *title,
11350                                              GtkCellRenderer *cell,
11351                                              ...)
11352 {
11353   GtkTreeViewColumn *column;
11354   gchar *attribute;
11355   va_list args;
11356   gint column_id;
11357
11358   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), -1);
11359
11360   column = gtk_tree_view_column_new ();
11361   if (tree_view->priv->fixed_height_mode)
11362     gtk_tree_view_column_set_sizing (column, GTK_TREE_VIEW_COLUMN_FIXED);
11363
11364   gtk_tree_view_column_set_title (column, title);
11365   gtk_tree_view_column_pack_start (column, cell, TRUE);
11366
11367   va_start (args, cell);
11368
11369   attribute = va_arg (args, gchar *);
11370
11371   while (attribute != NULL)
11372     {
11373       column_id = va_arg (args, gint);
11374       gtk_tree_view_column_add_attribute (column, cell, attribute, column_id);
11375       attribute = va_arg (args, gchar *);
11376     }
11377
11378   va_end (args);
11379
11380   gtk_tree_view_insert_column (tree_view, column, position);
11381
11382   return tree_view->priv->n_columns;
11383 }
11384
11385 /**
11386  * gtk_tree_view_insert_column_with_data_func:
11387  * @tree_view: a #GtkTreeView
11388  * @position: Position to insert, -1 for append
11389  * @title: column title
11390  * @cell: cell renderer for column
11391  * @func: function to set attributes of cell renderer
11392  * @data: data for @func
11393  * @dnotify: destroy notifier for @data
11394  *
11395  * Convenience function that inserts a new column into the #GtkTreeView
11396  * with the given cell renderer and a #GtkCellDataFunc to set cell renderer
11397  * attributes (normally using data from the model). See also
11398  * gtk_tree_view_column_set_cell_data_func(), gtk_tree_view_column_pack_start().
11399  * If @tree_view has "fixed_height" mode enabled, then the new column will have its
11400  * "sizing" property set to be GTK_TREE_VIEW_COLUMN_FIXED.
11401  *
11402  * Return value: number of columns in the tree view post-insert
11403  **/
11404 gint
11405 gtk_tree_view_insert_column_with_data_func  (GtkTreeView               *tree_view,
11406                                              gint                       position,
11407                                              const gchar               *title,
11408                                              GtkCellRenderer           *cell,
11409                                              GtkTreeCellDataFunc        func,
11410                                              gpointer                   data,
11411                                              GDestroyNotify             dnotify)
11412 {
11413   GtkTreeViewColumn *column;
11414
11415   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), -1);
11416
11417   column = gtk_tree_view_column_new ();
11418   if (tree_view->priv->fixed_height_mode)
11419     gtk_tree_view_column_set_sizing (column, GTK_TREE_VIEW_COLUMN_FIXED);
11420
11421   gtk_tree_view_column_set_title (column, title);
11422   gtk_tree_view_column_pack_start (column, cell, TRUE);
11423   gtk_tree_view_column_set_cell_data_func (column, cell, func, data, dnotify);
11424
11425   gtk_tree_view_insert_column (tree_view, column, position);
11426
11427   return tree_view->priv->n_columns;
11428 }
11429
11430 /**
11431  * gtk_tree_view_get_column:
11432  * @tree_view: A #GtkTreeView.
11433  * @n: The position of the column, counting from 0.
11434  *
11435  * Gets the #GtkTreeViewColumn at the given position in the #tree_view.
11436  *
11437  * Return value: The #GtkTreeViewColumn, or %NULL if the position is outside the
11438  * range of columns.
11439  **/
11440 GtkTreeViewColumn *
11441 gtk_tree_view_get_column (GtkTreeView *tree_view,
11442                           gint         n)
11443 {
11444   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), NULL);
11445
11446   if (n < 0 || n >= tree_view->priv->n_columns)
11447     return NULL;
11448
11449   if (tree_view->priv->columns == NULL)
11450     return NULL;
11451
11452   return GTK_TREE_VIEW_COLUMN (g_list_nth (tree_view->priv->columns, n)->data);
11453 }
11454
11455 /**
11456  * gtk_tree_view_get_columns:
11457  * @tree_view: A #GtkTreeView
11458  *
11459  * Returns a #GList of all the #GtkTreeViewColumn s currently in @tree_view.
11460  * The returned list must be freed with g_list_free ().
11461  *
11462  * Return value: (element-type GtkTreeViewColumn) (transfer container): A list of #GtkTreeViewColumn s
11463  **/
11464 GList *
11465 gtk_tree_view_get_columns (GtkTreeView *tree_view)
11466 {
11467   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), NULL);
11468
11469   return g_list_copy (tree_view->priv->columns);
11470 }
11471
11472 /**
11473  * gtk_tree_view_move_column_after:
11474  * @tree_view: A #GtkTreeView
11475  * @column: The #GtkTreeViewColumn to be moved.
11476  * @base_column: (allow-none): The #GtkTreeViewColumn to be moved relative to, or %NULL.
11477  *
11478  * Moves @column to be after to @base_column.  If @base_column is %NULL, then
11479  * @column is placed in the first position.
11480  **/
11481 void
11482 gtk_tree_view_move_column_after (GtkTreeView       *tree_view,
11483                                  GtkTreeViewColumn *column,
11484                                  GtkTreeViewColumn *base_column)
11485 {
11486   GList *column_list_el, *base_el = NULL;
11487
11488   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
11489
11490   column_list_el = g_list_find (tree_view->priv->columns, column);
11491   g_return_if_fail (column_list_el != NULL);
11492
11493   if (base_column)
11494     {
11495       base_el = g_list_find (tree_view->priv->columns, base_column);
11496       g_return_if_fail (base_el != NULL);
11497     }
11498
11499   if (column_list_el->prev == base_el)
11500     return;
11501
11502   tree_view->priv->columns = g_list_remove_link (tree_view->priv->columns, column_list_el);
11503   if (base_el == NULL)
11504     {
11505       column_list_el->prev = NULL;
11506       column_list_el->next = tree_view->priv->columns;
11507       if (column_list_el->next)
11508         column_list_el->next->prev = column_list_el;
11509       tree_view->priv->columns = column_list_el;
11510     }
11511   else
11512     {
11513       column_list_el->prev = base_el;
11514       column_list_el->next = base_el->next;
11515       if (column_list_el->next)
11516         column_list_el->next->prev = column_list_el;
11517       base_el->next = column_list_el;
11518     }
11519
11520   if (GTK_WIDGET_REALIZED (tree_view))
11521     {
11522       gtk_widget_queue_resize (GTK_WIDGET (tree_view));
11523       gtk_tree_view_size_allocate_columns (GTK_WIDGET (tree_view), NULL);
11524     }
11525
11526   g_signal_emit (tree_view, tree_view_signals[COLUMNS_CHANGED], 0);
11527 }
11528
11529 /**
11530  * gtk_tree_view_set_expander_column:
11531  * @tree_view: A #GtkTreeView
11532  * @column: %NULL, or the column to draw the expander arrow at.
11533  *
11534  * Sets the column to draw the expander arrow at. It must be in @tree_view.
11535  * If @column is %NULL, then the expander arrow is always at the first
11536  * visible column.
11537  *
11538  * If you do not want expander arrow to appear in your tree, set the
11539  * expander column to a hidden column.
11540  **/
11541 void
11542 gtk_tree_view_set_expander_column (GtkTreeView       *tree_view,
11543                                    GtkTreeViewColumn *column)
11544 {
11545   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
11546   g_return_if_fail (column == NULL || GTK_IS_TREE_VIEW_COLUMN (column));
11547
11548   if (tree_view->priv->expander_column != column)
11549     {
11550       GList *list;
11551
11552       if (column)
11553         {
11554           /* Confirm that column is in tree_view */
11555           for (list = tree_view->priv->columns; list; list = list->next)
11556             if (list->data == column)
11557               break;
11558           g_return_if_fail (list != NULL);
11559         }
11560
11561       tree_view->priv->expander_column = column;
11562       g_object_notify (G_OBJECT (tree_view), "expander-column");
11563     }
11564 }
11565
11566 /**
11567  * gtk_tree_view_get_expander_column:
11568  * @tree_view: A #GtkTreeView
11569  *
11570  * Returns the column that is the current expander column.  This
11571  * column has the expander arrow drawn next to it.
11572  *
11573  * Return value: The expander column.
11574  **/
11575 GtkTreeViewColumn *
11576 gtk_tree_view_get_expander_column (GtkTreeView *tree_view)
11577 {
11578   GList *list;
11579
11580   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), NULL);
11581
11582   for (list = tree_view->priv->columns; list; list = list->next)
11583     if (gtk_tree_view_is_expander_column (tree_view, GTK_TREE_VIEW_COLUMN (list->data)))
11584       return (GtkTreeViewColumn *) list->data;
11585   return NULL;
11586 }
11587
11588
11589 /**
11590  * gtk_tree_view_set_column_drag_function:
11591  * @tree_view: A #GtkTreeView.
11592  * @func: (allow-none): A function to determine which columns are reorderable, or %NULL.
11593  * @user_data: (allow-none): User data to be passed to @func, or %NULL
11594  * @destroy: (allow-none): Destroy notifier for @user_data, or %NULL
11595  *
11596  * Sets a user function for determining where a column may be dropped when
11597  * dragged.  This function is called on every column pair in turn at the
11598  * beginning of a column drag to determine where a drop can take place.  The
11599  * arguments passed to @func are: the @tree_view, the #GtkTreeViewColumn being
11600  * dragged, the two #GtkTreeViewColumn s determining the drop spot, and
11601  * @user_data.  If either of the #GtkTreeViewColumn arguments for the drop spot
11602  * are %NULL, then they indicate an edge.  If @func is set to be %NULL, then
11603  * @tree_view reverts to the default behavior of allowing all columns to be
11604  * dropped everywhere.
11605  **/
11606 void
11607 gtk_tree_view_set_column_drag_function (GtkTreeView               *tree_view,
11608                                         GtkTreeViewColumnDropFunc  func,
11609                                         gpointer                   user_data,
11610                                         GDestroyNotify             destroy)
11611 {
11612   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
11613
11614   if (tree_view->priv->column_drop_func_data_destroy)
11615     tree_view->priv->column_drop_func_data_destroy (tree_view->priv->column_drop_func_data);
11616
11617   tree_view->priv->column_drop_func = func;
11618   tree_view->priv->column_drop_func_data = user_data;
11619   tree_view->priv->column_drop_func_data_destroy = destroy;
11620 }
11621
11622 /**
11623  * gtk_tree_view_scroll_to_point:
11624  * @tree_view: a #GtkTreeView
11625  * @tree_x: X coordinate of new top-left pixel of visible area, or -1
11626  * @tree_y: Y coordinate of new top-left pixel of visible area, or -1
11627  *
11628  * Scrolls the tree view such that the top-left corner of the visible
11629  * area is @tree_x, @tree_y, where @tree_x and @tree_y are specified
11630  * in tree coordinates.  The @tree_view must be realized before
11631  * this function is called.  If it isn't, you probably want to be
11632  * using gtk_tree_view_scroll_to_cell().
11633  *
11634  * If either @tree_x or @tree_y are -1, then that direction isn't scrolled.
11635  **/
11636 void
11637 gtk_tree_view_scroll_to_point (GtkTreeView *tree_view,
11638                                gint         tree_x,
11639                                gint         tree_y)
11640 {
11641   GtkAdjustment *hadj;
11642   GtkAdjustment *vadj;
11643
11644   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
11645   g_return_if_fail (GTK_WIDGET_REALIZED (tree_view));
11646
11647   hadj = tree_view->priv->hadjustment;
11648   vadj = tree_view->priv->vadjustment;
11649
11650   if (tree_x != -1)
11651     gtk_adjustment_set_value (hadj, CLAMP (tree_x, hadj->lower, hadj->upper - hadj->page_size));
11652   if (tree_y != -1)
11653     gtk_adjustment_set_value (vadj, CLAMP (tree_y, vadj->lower, vadj->upper - vadj->page_size));
11654 }
11655
11656 /**
11657  * gtk_tree_view_scroll_to_cell:
11658  * @tree_view: A #GtkTreeView.
11659  * @path: (allow-none): The path of the row to move to, or %NULL.
11660  * @column: (allow-none): The #GtkTreeViewColumn to move horizontally to, or %NULL.
11661  * @use_align: whether to use alignment arguments, or %FALSE.
11662  * @row_align: The vertical alignment of the row specified by @path.
11663  * @col_align: The horizontal alignment of the column specified by @column.
11664  *
11665  * Moves the alignments of @tree_view to the position specified by @column and
11666  * @path.  If @column is %NULL, then no horizontal scrolling occurs.  Likewise,
11667  * if @path is %NULL no vertical scrolling occurs.  At a minimum, one of @column
11668  * or @path need to be non-%NULL.  @row_align determines where the row is
11669  * placed, and @col_align determines where @column is placed.  Both are expected
11670  * to be between 0.0 and 1.0. 0.0 means left/top alignment, 1.0 means
11671  * right/bottom alignment, 0.5 means center.
11672  *
11673  * If @use_align is %FALSE, then the alignment arguments are ignored, and the
11674  * tree does the minimum amount of work to scroll the cell onto the screen.
11675  * This means that the cell will be scrolled to the edge closest to its current
11676  * position.  If the cell is currently visible on the screen, nothing is done.
11677  *
11678  * This function only works if the model is set, and @path is a valid row on the
11679  * model.  If the model changes before the @tree_view is realized, the centered
11680  * path will be modified to reflect this change.
11681  **/
11682 void
11683 gtk_tree_view_scroll_to_cell (GtkTreeView       *tree_view,
11684                               GtkTreePath       *path,
11685                               GtkTreeViewColumn *column,
11686                               gboolean           use_align,
11687                               gfloat             row_align,
11688                               gfloat             col_align)
11689 {
11690   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
11691   g_return_if_fail (tree_view->priv->model != NULL);
11692   g_return_if_fail (tree_view->priv->tree != NULL);
11693   g_return_if_fail (row_align >= 0.0 && row_align <= 1.0);
11694   g_return_if_fail (col_align >= 0.0 && col_align <= 1.0);
11695   g_return_if_fail (path != NULL || column != NULL);
11696
11697 #if 0
11698   g_print ("gtk_tree_view_scroll_to_cell:\npath: %s\ncolumn: %s\nuse_align: %d\nrow_align: %f\ncol_align: %f\n",
11699            gtk_tree_path_to_string (path), column?"non-null":"null", use_align, row_align, col_align);
11700 #endif
11701   row_align = CLAMP (row_align, 0.0, 1.0);
11702   col_align = CLAMP (col_align, 0.0, 1.0);
11703
11704
11705   /* Note: Despite the benefits that come from having one code path for the
11706    * scrolling code, we short-circuit validate_visible_area's immplementation as
11707    * it is much slower than just going to the point.
11708    */
11709   if (! gtk_widget_get_visible (GTK_WIDGET (tree_view)) ||
11710       ! GTK_WIDGET_REALIZED (tree_view) ||
11711       GTK_WIDGET_ALLOC_NEEDED (tree_view) ||
11712       GTK_RBNODE_FLAG_SET (tree_view->priv->tree->root, GTK_RBNODE_DESCENDANTS_INVALID))
11713     {
11714       if (tree_view->priv->scroll_to_path)
11715         gtk_tree_row_reference_free (tree_view->priv->scroll_to_path);
11716
11717       tree_view->priv->scroll_to_path = NULL;
11718       tree_view->priv->scroll_to_column = NULL;
11719
11720       if (path)
11721         tree_view->priv->scroll_to_path = gtk_tree_row_reference_new_proxy (G_OBJECT (tree_view), tree_view->priv->model, path);
11722       if (column)
11723         tree_view->priv->scroll_to_column = column;
11724       tree_view->priv->scroll_to_use_align = use_align;
11725       tree_view->priv->scroll_to_row_align = row_align;
11726       tree_view->priv->scroll_to_col_align = col_align;
11727
11728       install_presize_handler (tree_view);
11729     }
11730   else
11731     {
11732       GdkRectangle cell_rect;
11733       GdkRectangle vis_rect;
11734       gint dest_x, dest_y;
11735
11736       gtk_tree_view_get_background_area (tree_view, path, column, &cell_rect);
11737       gtk_tree_view_get_visible_rect (tree_view, &vis_rect);
11738
11739       cell_rect.y = TREE_WINDOW_Y_TO_RBTREE_Y (tree_view, cell_rect.y);
11740
11741       dest_x = vis_rect.x;
11742       dest_y = vis_rect.y;
11743
11744       if (column)
11745         {
11746           if (use_align)
11747             {
11748               dest_x = cell_rect.x - ((vis_rect.width - cell_rect.width) * col_align);
11749             }
11750           else
11751             {
11752               if (cell_rect.x < vis_rect.x)
11753                 dest_x = cell_rect.x;
11754               if (cell_rect.x + cell_rect.width > vis_rect.x + vis_rect.width)
11755                 dest_x = cell_rect.x + cell_rect.width - vis_rect.width;
11756             }
11757         }
11758
11759       if (path)
11760         {
11761           if (use_align)
11762             {
11763               dest_y = cell_rect.y - ((vis_rect.height - cell_rect.height) * row_align);
11764               dest_y = MAX (dest_y, 0);
11765             }
11766           else
11767             {
11768               if (cell_rect.y < vis_rect.y)
11769                 dest_y = cell_rect.y;
11770               if (cell_rect.y + cell_rect.height > vis_rect.y + vis_rect.height)
11771                 dest_y = cell_rect.y + cell_rect.height - vis_rect.height;
11772             }
11773         }
11774
11775       gtk_tree_view_scroll_to_point (tree_view, dest_x, dest_y);
11776     }
11777 }
11778
11779 /**
11780  * gtk_tree_view_row_activated:
11781  * @tree_view: A #GtkTreeView
11782  * @path: The #GtkTreePath to be activated.
11783  * @column: The #GtkTreeViewColumn to be activated.
11784  *
11785  * Activates the cell determined by @path and @column.
11786  **/
11787 void
11788 gtk_tree_view_row_activated (GtkTreeView       *tree_view,
11789                              GtkTreePath       *path,
11790                              GtkTreeViewColumn *column)
11791 {
11792   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
11793
11794   g_signal_emit (tree_view, tree_view_signals[ROW_ACTIVATED], 0, path, column);
11795 }
11796
11797
11798 static void
11799 gtk_tree_view_expand_all_emission_helper (GtkRBTree *tree,
11800                                           GtkRBNode *node,
11801                                           gpointer   data)
11802 {
11803   GtkTreeView *tree_view = data;
11804
11805   if ((node->flags & GTK_RBNODE_IS_PARENT) == GTK_RBNODE_IS_PARENT &&
11806       node->children)
11807     {
11808       GtkTreePath *path;
11809       GtkTreeIter iter;
11810
11811       path = _gtk_tree_view_find_path (tree_view, tree, node);
11812       gtk_tree_model_get_iter (tree_view->priv->model, &iter, path);
11813
11814       g_signal_emit (tree_view, tree_view_signals[ROW_EXPANDED], 0, &iter, path);
11815
11816       gtk_tree_path_free (path);
11817     }
11818
11819   if (node->children)
11820     _gtk_rbtree_traverse (node->children,
11821                           node->children->root,
11822                           G_PRE_ORDER,
11823                           gtk_tree_view_expand_all_emission_helper,
11824                           tree_view);
11825 }
11826
11827 /**
11828  * gtk_tree_view_expand_all:
11829  * @tree_view: A #GtkTreeView.
11830  *
11831  * Recursively expands all nodes in the @tree_view.
11832  **/
11833 void
11834 gtk_tree_view_expand_all (GtkTreeView *tree_view)
11835 {
11836   GtkTreePath *path;
11837   GtkRBTree *tree;
11838   GtkRBNode *node;
11839
11840   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
11841
11842   if (tree_view->priv->tree == NULL)
11843     return;
11844
11845   path = gtk_tree_path_new_first ();
11846   _gtk_tree_view_find_node (tree_view, path, &tree, &node);
11847
11848   while (node)
11849     {
11850       gtk_tree_view_real_expand_row (tree_view, path, tree, node, TRUE, FALSE);
11851       node = _gtk_rbtree_next (tree, node);
11852       gtk_tree_path_next (path);
11853   }
11854
11855   gtk_tree_path_free (path);
11856 }
11857
11858 /* Timeout to animate the expander during expands and collapses */
11859 static gboolean
11860 expand_collapse_timeout (gpointer data)
11861 {
11862   return do_expand_collapse (data);
11863 }
11864
11865 static void
11866 add_expand_collapse_timeout (GtkTreeView *tree_view,
11867                              GtkRBTree   *tree,
11868                              GtkRBNode   *node,
11869                              gboolean     expand)
11870 {
11871   if (tree_view->priv->expand_collapse_timeout != 0)
11872     return;
11873
11874   tree_view->priv->expand_collapse_timeout =
11875       gdk_threads_add_timeout (50, expand_collapse_timeout, tree_view);
11876   tree_view->priv->expanded_collapsed_tree = tree;
11877   tree_view->priv->expanded_collapsed_node = node;
11878
11879   if (expand)
11880     GTK_RBNODE_SET_FLAG (node, GTK_RBNODE_IS_SEMI_COLLAPSED);
11881   else
11882     GTK_RBNODE_SET_FLAG (node, GTK_RBNODE_IS_SEMI_EXPANDED);
11883 }
11884
11885 static void
11886 remove_expand_collapse_timeout (GtkTreeView *tree_view)
11887 {
11888   if (tree_view->priv->expand_collapse_timeout)
11889     {
11890       g_source_remove (tree_view->priv->expand_collapse_timeout);
11891       tree_view->priv->expand_collapse_timeout = 0;
11892     }
11893
11894   if (tree_view->priv->expanded_collapsed_node != NULL)
11895     {
11896       GTK_RBNODE_UNSET_FLAG (tree_view->priv->expanded_collapsed_node, GTK_RBNODE_IS_SEMI_EXPANDED);
11897       GTK_RBNODE_UNSET_FLAG (tree_view->priv->expanded_collapsed_node, GTK_RBNODE_IS_SEMI_COLLAPSED);
11898
11899       tree_view->priv->expanded_collapsed_node = NULL;
11900     }
11901 }
11902
11903 static void
11904 cancel_arrow_animation (GtkTreeView *tree_view)
11905 {
11906   if (tree_view->priv->expand_collapse_timeout)
11907     {
11908       while (do_expand_collapse (tree_view));
11909
11910       remove_expand_collapse_timeout (tree_view);
11911     }
11912 }
11913
11914 static gboolean
11915 do_expand_collapse (GtkTreeView *tree_view)
11916 {
11917   GtkRBNode *node;
11918   GtkRBTree *tree;
11919   gboolean expanding;
11920   gboolean redraw;
11921
11922   redraw = FALSE;
11923   expanding = TRUE;
11924
11925   node = tree_view->priv->expanded_collapsed_node;
11926   tree = tree_view->priv->expanded_collapsed_tree;
11927
11928   if (node->children == NULL)
11929     expanding = FALSE;
11930
11931   if (expanding)
11932     {
11933       if (GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_SEMI_COLLAPSED))
11934         {
11935           GTK_RBNODE_UNSET_FLAG (node, GTK_RBNODE_IS_SEMI_COLLAPSED);
11936           GTK_RBNODE_SET_FLAG (node, GTK_RBNODE_IS_SEMI_EXPANDED);
11937
11938           redraw = TRUE;
11939
11940         }
11941       else if (GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_SEMI_EXPANDED))
11942         {
11943           GTK_RBNODE_UNSET_FLAG (node, GTK_RBNODE_IS_SEMI_EXPANDED);
11944
11945           redraw = TRUE;
11946         }
11947     }
11948   else
11949     {
11950       if (GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_SEMI_EXPANDED))
11951         {
11952           GTK_RBNODE_UNSET_FLAG (node, GTK_RBNODE_IS_SEMI_EXPANDED);
11953           GTK_RBNODE_SET_FLAG (node, GTK_RBNODE_IS_SEMI_COLLAPSED);
11954
11955           redraw = TRUE;
11956         }
11957       else if (GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_SEMI_COLLAPSED))
11958         {
11959           GTK_RBNODE_UNSET_FLAG (node, GTK_RBNODE_IS_SEMI_COLLAPSED);
11960
11961           redraw = TRUE;
11962
11963         }
11964     }
11965
11966   if (redraw)
11967     {
11968       gtk_tree_view_queue_draw_arrow (tree_view, tree, node, NULL);
11969
11970       return TRUE;
11971     }
11972
11973   return FALSE;
11974 }
11975
11976 /**
11977  * gtk_tree_view_collapse_all:
11978  * @tree_view: A #GtkTreeView.
11979  *
11980  * Recursively collapses all visible, expanded nodes in @tree_view.
11981  **/
11982 void
11983 gtk_tree_view_collapse_all (GtkTreeView *tree_view)
11984 {
11985   GtkRBTree *tree;
11986   GtkRBNode *node;
11987   GtkTreePath *path;
11988   gint *indices;
11989
11990   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
11991
11992   if (tree_view->priv->tree == NULL)
11993     return;
11994
11995   path = gtk_tree_path_new ();
11996   gtk_tree_path_down (path);
11997   indices = gtk_tree_path_get_indices (path);
11998
11999   tree = tree_view->priv->tree;
12000   node = tree->root;
12001   while (node && node->left != tree->nil)
12002     node = node->left;
12003
12004   while (node)
12005     {
12006       if (node->children)
12007         gtk_tree_view_real_collapse_row (tree_view, path, tree, node, FALSE);
12008       indices[0]++;
12009       node = _gtk_rbtree_next (tree, node);
12010     }
12011
12012   gtk_tree_path_free (path);
12013 }
12014
12015 /**
12016  * gtk_tree_view_expand_to_path:
12017  * @tree_view: A #GtkTreeView.
12018  * @path: path to a row.
12019  *
12020  * Expands the row at @path. This will also expand all parent rows of
12021  * @path as necessary.
12022  *
12023  * Since: 2.2
12024  **/
12025 void
12026 gtk_tree_view_expand_to_path (GtkTreeView *tree_view,
12027                               GtkTreePath *path)
12028 {
12029   gint i, depth;
12030   gint *indices;
12031   GtkTreePath *tmp;
12032
12033   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
12034   g_return_if_fail (path != NULL);
12035
12036   depth = gtk_tree_path_get_depth (path);
12037   indices = gtk_tree_path_get_indices (path);
12038
12039   tmp = gtk_tree_path_new ();
12040   g_return_if_fail (tmp != NULL);
12041
12042   for (i = 0; i < depth; i++)
12043     {
12044       gtk_tree_path_append_index (tmp, indices[i]);
12045       gtk_tree_view_expand_row (tree_view, tmp, FALSE);
12046     }
12047
12048   gtk_tree_path_free (tmp);
12049 }
12050
12051 /* FIXME the bool return values for expand_row and collapse_row are
12052  * not analagous; they should be TRUE if the row had children and
12053  * was not already in the requested state.
12054  */
12055
12056
12057 static gboolean
12058 gtk_tree_view_real_expand_row (GtkTreeView *tree_view,
12059                                GtkTreePath *path,
12060                                GtkRBTree   *tree,
12061                                GtkRBNode   *node,
12062                                gboolean     open_all,
12063                                gboolean     animate)
12064 {
12065   GtkTreeIter iter;
12066   GtkTreeIter temp;
12067   gboolean expand;
12068
12069   if (animate)
12070     g_object_get (gtk_widget_get_settings (GTK_WIDGET (tree_view)),
12071                   "gtk-enable-animations", &animate,
12072                   NULL);
12073
12074   remove_auto_expand_timeout (tree_view);
12075
12076   if (node->children && !open_all)
12077     return FALSE;
12078
12079   if (! GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_PARENT))
12080     return FALSE;
12081
12082   gtk_tree_model_get_iter (tree_view->priv->model, &iter, path);
12083   if (! gtk_tree_model_iter_has_child (tree_view->priv->model, &iter))
12084     return FALSE;
12085
12086
12087    if (node->children && open_all)
12088     {
12089       gboolean retval = FALSE;
12090       GtkTreePath *tmp_path = gtk_tree_path_copy (path);
12091
12092       gtk_tree_path_append_index (tmp_path, 0);
12093       tree = node->children;
12094       node = tree->root;
12095       while (node->left != tree->nil)
12096         node = node->left;
12097       /* try to expand the children */
12098       do
12099         {
12100          gboolean t;
12101          t = gtk_tree_view_real_expand_row (tree_view, tmp_path, tree, node,
12102                                             TRUE, animate);
12103          if (t)
12104            retval = TRUE;
12105
12106          gtk_tree_path_next (tmp_path);
12107          node = _gtk_rbtree_next (tree, node);
12108        }
12109       while (node != NULL);
12110
12111       gtk_tree_path_free (tmp_path);
12112
12113       return retval;
12114     }
12115
12116   g_signal_emit (tree_view, tree_view_signals[TEST_EXPAND_ROW], 0, &iter, path, &expand);
12117
12118   if (!gtk_tree_model_iter_has_child (tree_view->priv->model, &iter))
12119     return FALSE;
12120
12121   if (expand)
12122     return FALSE;
12123
12124   node->children = _gtk_rbtree_new ();
12125   node->children->parent_tree = tree;
12126   node->children->parent_node = node;
12127
12128   gtk_tree_model_iter_children (tree_view->priv->model, &temp, &iter);
12129
12130   gtk_tree_view_build_tree (tree_view,
12131                             node->children,
12132                             &temp,
12133                             gtk_tree_path_get_depth (path) + 1,
12134                             open_all);
12135
12136   remove_expand_collapse_timeout (tree_view);
12137
12138   if (animate)
12139     add_expand_collapse_timeout (tree_view, tree, node, TRUE);
12140
12141   install_presize_handler (tree_view);
12142
12143   g_signal_emit (tree_view, tree_view_signals[ROW_EXPANDED], 0, &iter, path);
12144   if (open_all && node->children)
12145     {
12146       _gtk_rbtree_traverse (node->children,
12147                             node->children->root,
12148                             G_PRE_ORDER,
12149                             gtk_tree_view_expand_all_emission_helper,
12150                             tree_view);
12151     }
12152   return TRUE;
12153 }
12154
12155
12156 /**
12157  * gtk_tree_view_expand_row:
12158  * @tree_view: a #GtkTreeView
12159  * @path: path to a row
12160  * @open_all: whether to recursively expand, or just expand immediate children
12161  *
12162  * Opens the row so its children are visible.
12163  *
12164  * Return value: %TRUE if the row existed and had children
12165  **/
12166 gboolean
12167 gtk_tree_view_expand_row (GtkTreeView *tree_view,
12168                           GtkTreePath *path,
12169                           gboolean     open_all)
12170 {
12171   GtkRBTree *tree;
12172   GtkRBNode *node;
12173
12174   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), FALSE);
12175   g_return_val_if_fail (tree_view->priv->model != NULL, FALSE);
12176   g_return_val_if_fail (path != NULL, FALSE);
12177
12178   if (_gtk_tree_view_find_node (tree_view,
12179                                 path,
12180                                 &tree,
12181                                 &node))
12182     return FALSE;
12183
12184   if (tree != NULL)
12185     return gtk_tree_view_real_expand_row (tree_view, path, tree, node, open_all, FALSE);
12186   else
12187     return FALSE;
12188 }
12189
12190 static gboolean
12191 gtk_tree_view_real_collapse_row (GtkTreeView *tree_view,
12192                                  GtkTreePath *path,
12193                                  GtkRBTree   *tree,
12194                                  GtkRBNode   *node,
12195                                  gboolean     animate)
12196 {
12197   GtkTreeIter iter;
12198   GtkTreeIter children;
12199   gboolean collapse;
12200   gint x, y;
12201   GList *list;
12202   GdkWindow *child, *parent;
12203
12204   if (animate)
12205     g_object_get (gtk_widget_get_settings (GTK_WIDGET (tree_view)),
12206                   "gtk-enable-animations", &animate,
12207                   NULL);
12208
12209   remove_auto_expand_timeout (tree_view);
12210
12211   if (node->children == NULL)
12212     return FALSE;
12213
12214   gtk_tree_model_get_iter (tree_view->priv->model, &iter, path);
12215
12216   g_signal_emit (tree_view, tree_view_signals[TEST_COLLAPSE_ROW], 0, &iter, path, &collapse);
12217
12218   if (collapse)
12219     return FALSE;
12220
12221   /* if the prelighted node is a child of us, we want to unprelight it.  We have
12222    * a chance to prelight the correct node below */
12223
12224   if (tree_view->priv->prelight_tree)
12225     {
12226       GtkRBTree *parent_tree;
12227       GtkRBNode *parent_node;
12228
12229       parent_tree = tree_view->priv->prelight_tree->parent_tree;
12230       parent_node = tree_view->priv->prelight_tree->parent_node;
12231       while (parent_tree)
12232         {
12233           if (parent_tree == tree && parent_node == node)
12234             {
12235               ensure_unprelighted (tree_view);
12236               break;
12237             }
12238           parent_node = parent_tree->parent_node;
12239           parent_tree = parent_tree->parent_tree;
12240         }
12241     }
12242
12243   TREE_VIEW_INTERNAL_ASSERT (gtk_tree_model_iter_children (tree_view->priv->model, &children, &iter), FALSE);
12244
12245   for (list = tree_view->priv->columns; list; list = list->next)
12246     {
12247       GtkTreeViewColumn *column = list->data;
12248
12249       if (column->visible == FALSE)
12250         continue;
12251       if (gtk_tree_view_column_get_sizing (column) == GTK_TREE_VIEW_COLUMN_AUTOSIZE)
12252         _gtk_tree_view_column_cell_set_dirty (column, TRUE);
12253     }
12254
12255   if (tree_view->priv->destroy_count_func)
12256     {
12257       GtkTreePath *child_path;
12258       gint child_count = 0;
12259       child_path = gtk_tree_path_copy (path);
12260       gtk_tree_path_down (child_path);
12261       if (node->children)
12262         _gtk_rbtree_traverse (node->children, node->children->root, G_POST_ORDER, count_children_helper, &child_count);
12263       tree_view->priv->destroy_count_func (tree_view, child_path, child_count, tree_view->priv->destroy_count_data);
12264       gtk_tree_path_free (child_path);
12265     }
12266
12267   if (gtk_tree_row_reference_valid (tree_view->priv->cursor))
12268     {
12269       GtkTreePath *cursor_path = gtk_tree_row_reference_get_path (tree_view->priv->cursor);
12270
12271       if (gtk_tree_path_is_ancestor (path, cursor_path))
12272         {
12273           gtk_tree_row_reference_free (tree_view->priv->cursor);
12274           tree_view->priv->cursor = gtk_tree_row_reference_new_proxy (G_OBJECT (tree_view),
12275                                                                       tree_view->priv->model,
12276                                                                       path);
12277         }
12278       gtk_tree_path_free (cursor_path);
12279     }
12280
12281   if (gtk_tree_row_reference_valid (tree_view->priv->anchor))
12282     {
12283       GtkTreePath *anchor_path = gtk_tree_row_reference_get_path (tree_view->priv->anchor);
12284       if (gtk_tree_path_is_ancestor (path, anchor_path))
12285         {
12286           gtk_tree_row_reference_free (tree_view->priv->anchor);
12287           tree_view->priv->anchor = NULL;
12288         }
12289       gtk_tree_path_free (anchor_path);
12290     }
12291
12292   /* Stop a pending double click */
12293   tree_view->priv->last_button_x = -1;
12294   tree_view->priv->last_button_y = -1;
12295
12296   remove_expand_collapse_timeout (tree_view);
12297
12298   if (gtk_tree_view_unref_and_check_selection_tree (tree_view, node->children))
12299     {
12300       _gtk_rbtree_remove (node->children);
12301       g_signal_emit_by_name (tree_view->priv->selection, "changed");
12302     }
12303   else
12304     _gtk_rbtree_remove (node->children);
12305
12306   if (animate)
12307     add_expand_collapse_timeout (tree_view, tree, node, FALSE);
12308
12309   if (gtk_widget_get_mapped (GTK_WIDGET (tree_view)))
12310     {
12311       gtk_widget_queue_resize (GTK_WIDGET (tree_view));
12312     }
12313
12314   g_signal_emit (tree_view, tree_view_signals[ROW_COLLAPSED], 0, &iter, path);
12315
12316   if (gtk_widget_get_mapped (GTK_WIDGET (tree_view)))
12317     {
12318       /* now that we've collapsed all rows, we want to try to set the prelight
12319        * again. To do this, we fake a motion event and send it to ourselves. */
12320
12321       child = tree_view->priv->bin_window;
12322       parent = gdk_window_get_parent (child);
12323
12324       if (gdk_window_get_pointer (parent, &x, &y, NULL) == child)
12325         {
12326           GdkEventMotion event;
12327           gint child_x, child_y;
12328
12329           gdk_window_get_position (child, &child_x, &child_y);
12330
12331           event.window = tree_view->priv->bin_window;
12332           event.x = x - child_x;
12333           event.y = y - child_y;
12334
12335           /* despite the fact this isn't a real event, I'm almost positive it will
12336            * never trigger a drag event.  maybe_drag is the only function that uses
12337            * more than just event.x and event.y. */
12338           gtk_tree_view_motion_bin_window (GTK_WIDGET (tree_view), &event);
12339         }
12340     }
12341
12342   return TRUE;
12343 }
12344
12345 /**
12346  * gtk_tree_view_collapse_row:
12347  * @tree_view: a #GtkTreeView
12348  * @path: path to a row in the @tree_view
12349  *
12350  * Collapses a row (hides its child rows, if they exist).
12351  *
12352  * Return value: %TRUE if the row was collapsed.
12353  **/
12354 gboolean
12355 gtk_tree_view_collapse_row (GtkTreeView *tree_view,
12356                             GtkTreePath *path)
12357 {
12358   GtkRBTree *tree;
12359   GtkRBNode *node;
12360
12361   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), FALSE);
12362   g_return_val_if_fail (tree_view->priv->tree != NULL, FALSE);
12363   g_return_val_if_fail (path != NULL, FALSE);
12364
12365   if (_gtk_tree_view_find_node (tree_view,
12366                                 path,
12367                                 &tree,
12368                                 &node))
12369     return FALSE;
12370
12371   if (tree == NULL || node->children == NULL)
12372     return FALSE;
12373
12374   return gtk_tree_view_real_collapse_row (tree_view, path, tree, node, FALSE);
12375 }
12376
12377 static void
12378 gtk_tree_view_map_expanded_rows_helper (GtkTreeView            *tree_view,
12379                                         GtkRBTree              *tree,
12380                                         GtkTreePath            *path,
12381                                         GtkTreeViewMappingFunc  func,
12382                                         gpointer                user_data)
12383 {
12384   GtkRBNode *node;
12385
12386   if (tree == NULL || tree->root == NULL)
12387     return;
12388
12389   node = tree->root;
12390
12391   while (node && node->left != tree->nil)
12392     node = node->left;
12393
12394   while (node)
12395     {
12396       if (node->children)
12397         {
12398           (* func) (tree_view, path, user_data);
12399           gtk_tree_path_down (path);
12400           gtk_tree_view_map_expanded_rows_helper (tree_view, node->children, path, func, user_data);
12401           gtk_tree_path_up (path);
12402         }
12403       gtk_tree_path_next (path);
12404       node = _gtk_rbtree_next (tree, node);
12405     }
12406 }
12407
12408 /**
12409  * gtk_tree_view_map_expanded_rows:
12410  * @tree_view: A #GtkTreeView
12411  * @func: A function to be called
12412  * @data: User data to be passed to the function.
12413  *
12414  * Calls @func on all expanded rows.
12415  **/
12416 void
12417 gtk_tree_view_map_expanded_rows (GtkTreeView            *tree_view,
12418                                  GtkTreeViewMappingFunc  func,
12419                                  gpointer                user_data)
12420 {
12421   GtkTreePath *path;
12422
12423   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
12424   g_return_if_fail (func != NULL);
12425
12426   path = gtk_tree_path_new_first ();
12427
12428   gtk_tree_view_map_expanded_rows_helper (tree_view,
12429                                           tree_view->priv->tree,
12430                                           path, func, user_data);
12431
12432   gtk_tree_path_free (path);
12433 }
12434
12435 /**
12436  * gtk_tree_view_row_expanded:
12437  * @tree_view: A #GtkTreeView.
12438  * @path: A #GtkTreePath to test expansion state.
12439  *
12440  * Returns %TRUE if the node pointed to by @path is expanded in @tree_view.
12441  *
12442  * Return value: %TRUE if #path is expanded.
12443  **/
12444 gboolean
12445 gtk_tree_view_row_expanded (GtkTreeView *tree_view,
12446                             GtkTreePath *path)
12447 {
12448   GtkRBTree *tree;
12449   GtkRBNode *node;
12450
12451   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), FALSE);
12452   g_return_val_if_fail (path != NULL, FALSE);
12453
12454   _gtk_tree_view_find_node (tree_view, path, &tree, &node);
12455
12456   if (node == NULL)
12457     return FALSE;
12458
12459   return (node->children != NULL);
12460 }
12461
12462 /**
12463  * gtk_tree_view_get_reorderable:
12464  * @tree_view: a #GtkTreeView
12465  *
12466  * Retrieves whether the user can reorder the tree via drag-and-drop. See
12467  * gtk_tree_view_set_reorderable().
12468  *
12469  * Return value: %TRUE if the tree can be reordered.
12470  **/
12471 gboolean
12472 gtk_tree_view_get_reorderable (GtkTreeView *tree_view)
12473 {
12474   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), FALSE);
12475
12476   return tree_view->priv->reorderable;
12477 }
12478
12479 /**
12480  * gtk_tree_view_set_reorderable:
12481  * @tree_view: A #GtkTreeView.
12482  * @reorderable: %TRUE, if the tree can be reordered.
12483  *
12484  * This function is a convenience function to allow you to reorder
12485  * models that support the #GtkDragSourceIface and the
12486  * #GtkDragDestIface.  Both #GtkTreeStore and #GtkListStore support
12487  * these.  If @reorderable is %TRUE, then the user can reorder the
12488  * model by dragging and dropping rows. The developer can listen to
12489  * these changes by connecting to the model's row_inserted and
12490  * row_deleted signals. The reordering is implemented by setting up
12491  * the tree view as a drag source and destination. Therefore, drag and
12492  * drop can not be used in a reorderable view for any other purpose.
12493  *
12494  * This function does not give you any degree of control over the order -- any
12495  * reordering is allowed.  If more control is needed, you should probably
12496  * handle drag and drop manually.
12497  **/
12498 void
12499 gtk_tree_view_set_reorderable (GtkTreeView *tree_view,
12500                                gboolean     reorderable)
12501 {
12502   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
12503
12504   reorderable = reorderable != FALSE;
12505
12506   if (tree_view->priv->reorderable == reorderable)
12507     return;
12508
12509   if (reorderable)
12510     {
12511       const GtkTargetEntry row_targets[] = {
12512         { "GTK_TREE_MODEL_ROW", GTK_TARGET_SAME_WIDGET, 0 }
12513       };
12514
12515       gtk_tree_view_enable_model_drag_source (tree_view,
12516                                               GDK_BUTTON1_MASK,
12517                                               row_targets,
12518                                               G_N_ELEMENTS (row_targets),
12519                                               GDK_ACTION_MOVE);
12520       gtk_tree_view_enable_model_drag_dest (tree_view,
12521                                             row_targets,
12522                                             G_N_ELEMENTS (row_targets),
12523                                             GDK_ACTION_MOVE);
12524     }
12525   else
12526     {
12527       gtk_tree_view_unset_rows_drag_source (tree_view);
12528       gtk_tree_view_unset_rows_drag_dest (tree_view);
12529     }
12530
12531   tree_view->priv->reorderable = reorderable;
12532
12533   g_object_notify (G_OBJECT (tree_view), "reorderable");
12534 }
12535
12536 static void
12537 gtk_tree_view_real_set_cursor (GtkTreeView     *tree_view,
12538                                GtkTreePath     *path,
12539                                gboolean         clear_and_select,
12540                                gboolean         clamp_node)
12541 {
12542   GtkRBTree *tree = NULL;
12543   GtkRBNode *node = NULL;
12544
12545   if (gtk_tree_row_reference_valid (tree_view->priv->cursor))
12546     {
12547       GtkTreePath *cursor_path;
12548       cursor_path = gtk_tree_row_reference_get_path (tree_view->priv->cursor);
12549       gtk_tree_view_queue_draw_path (tree_view, cursor_path, NULL);
12550       gtk_tree_path_free (cursor_path);
12551     }
12552
12553   gtk_tree_row_reference_free (tree_view->priv->cursor);
12554   tree_view->priv->cursor = NULL;
12555
12556   /* One cannot set the cursor on a separator.   Also, if
12557    * _gtk_tree_view_find_node returns TRUE, it ran out of tree
12558    * before finding the tree and node belonging to path.  The
12559    * path maps to a non-existing path and we will silently bail out.
12560    * We unset tree and node to avoid further processing.
12561    */
12562   if (!row_is_separator (tree_view, NULL, path)
12563       && _gtk_tree_view_find_node (tree_view, path, &tree, &node) == FALSE)
12564     {
12565       tree_view->priv->cursor =
12566           gtk_tree_row_reference_new_proxy (G_OBJECT (tree_view),
12567                                             tree_view->priv->model,
12568                                             path);
12569     }
12570   else
12571     {
12572       tree = NULL;
12573       node = NULL;
12574     }
12575
12576   if (tree != NULL)
12577     {
12578       GtkRBTree *new_tree = NULL;
12579       GtkRBNode *new_node = NULL;
12580
12581       if (clear_and_select && !tree_view->priv->ctrl_pressed)
12582         {
12583           GtkTreeSelectMode mode = 0;
12584
12585           if (tree_view->priv->ctrl_pressed)
12586             mode |= GTK_TREE_SELECT_MODE_TOGGLE;
12587           if (tree_view->priv->shift_pressed)
12588             mode |= GTK_TREE_SELECT_MODE_EXTEND;
12589
12590           _gtk_tree_selection_internal_select_node (tree_view->priv->selection,
12591                                                     node, tree, path, mode,
12592                                                     FALSE);
12593         }
12594
12595       /* We have to re-find tree and node here again, somebody might have
12596        * cleared the node or the whole tree in the GtkTreeSelection::changed
12597        * callback. If the nodes differ we bail out here.
12598        */
12599       _gtk_tree_view_find_node (tree_view, path, &new_tree, &new_node);
12600
12601       if (tree != new_tree || node != new_node)
12602         return;
12603
12604       if (clamp_node)
12605         {
12606           gtk_tree_view_clamp_node_visible (tree_view, tree, node);
12607           _gtk_tree_view_queue_draw_node (tree_view, tree, node, NULL);
12608         }
12609     }
12610
12611   g_signal_emit (tree_view, tree_view_signals[CURSOR_CHANGED], 0);
12612 }
12613
12614 /**
12615  * gtk_tree_view_get_cursor:
12616  * @tree_view: A #GtkTreeView
12617  * @path: (allow-none): A pointer to be filled with the current cursor path, or %NULL
12618  * @focus_column: (allow-none): A pointer to be filled with the current focus column, or %NULL
12619  *
12620  * Fills in @path and @focus_column with the current path and focus column.  If
12621  * the cursor isn't currently set, then *@path will be %NULL.  If no column
12622  * currently has focus, then *@focus_column will be %NULL.
12623  *
12624  * The returned #GtkTreePath must be freed with gtk_tree_path_free() when
12625  * you are done with it.
12626  **/
12627 void
12628 gtk_tree_view_get_cursor (GtkTreeView        *tree_view,
12629                           GtkTreePath       **path,
12630                           GtkTreeViewColumn **focus_column)
12631 {
12632   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
12633
12634   if (path)
12635     {
12636       if (gtk_tree_row_reference_valid (tree_view->priv->cursor))
12637         *path = gtk_tree_row_reference_get_path (tree_view->priv->cursor);
12638       else
12639         *path = NULL;
12640     }
12641
12642   if (focus_column)
12643     {
12644       *focus_column = tree_view->priv->focus_column;
12645     }
12646 }
12647
12648 /**
12649  * gtk_tree_view_set_cursor:
12650  * @tree_view: A #GtkTreeView
12651  * @path: A #GtkTreePath
12652  * @focus_column: (allow-none): A #GtkTreeViewColumn, or %NULL
12653  * @start_editing: %TRUE if the specified cell should start being edited.
12654  *
12655  * Sets the current keyboard focus to be at @path, and selects it.  This is
12656  * useful when you want to focus the user's attention on a particular row.  If
12657  * @focus_column is not %NULL, then focus is given to the column specified by
12658  * it. Additionally, if @focus_column is specified, and @start_editing is
12659  * %TRUE, then editing should be started in the specified cell.
12660  * This function is often followed by @gtk_widget_grab_focus (@tree_view)
12661  * in order to give keyboard focus to the widget.  Please note that editing
12662  * can only happen when the widget is realized.
12663  *
12664  * If @path is invalid for @model, the current cursor (if any) will be unset
12665  * and the function will return without failing.
12666  **/
12667 void
12668 gtk_tree_view_set_cursor (GtkTreeView       *tree_view,
12669                           GtkTreePath       *path,
12670                           GtkTreeViewColumn *focus_column,
12671                           gboolean           start_editing)
12672 {
12673   gtk_tree_view_set_cursor_on_cell (tree_view, path, focus_column,
12674                                     NULL, start_editing);
12675 }
12676
12677 /**
12678  * gtk_tree_view_set_cursor_on_cell:
12679  * @tree_view: A #GtkTreeView
12680  * @path: A #GtkTreePath
12681  * @focus_column: (allow-none): A #GtkTreeViewColumn, or %NULL
12682  * @focus_cell: (allow-none): A #GtkCellRenderer, or %NULL
12683  * @start_editing: %TRUE if the specified cell should start being edited.
12684  *
12685  * Sets the current keyboard focus to be at @path, and selects it.  This is
12686  * useful when you want to focus the user's attention on a particular row.  If
12687  * @focus_column is not %NULL, then focus is given to the column specified by
12688  * it. If @focus_column and @focus_cell are not %NULL, and @focus_column
12689  * contains 2 or more editable or activatable cells, then focus is given to
12690  * the cell specified by @focus_cell. Additionally, if @focus_column is
12691  * specified, and @start_editing is %TRUE, then editing should be started in
12692  * the specified cell.  This function is often followed by
12693  * @gtk_widget_grab_focus (@tree_view) in order to give keyboard focus to the
12694  * widget.  Please note that editing can only happen when the widget is
12695  * realized.
12696  *
12697  * If @path is invalid for @model, the current cursor (if any) will be unset
12698  * and the function will return without failing.
12699  *
12700  * Since: 2.2
12701  **/
12702 void
12703 gtk_tree_view_set_cursor_on_cell (GtkTreeView       *tree_view,
12704                                   GtkTreePath       *path,
12705                                   GtkTreeViewColumn *focus_column,
12706                                   GtkCellRenderer   *focus_cell,
12707                                   gboolean           start_editing)
12708 {
12709   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
12710   g_return_if_fail (path != NULL);
12711   g_return_if_fail (focus_column == NULL || GTK_IS_TREE_VIEW_COLUMN (focus_column));
12712
12713   if (!tree_view->priv->model)
12714     return;
12715
12716   if (focus_cell)
12717     {
12718       g_return_if_fail (focus_column);
12719       g_return_if_fail (GTK_IS_CELL_RENDERER (focus_cell));
12720     }
12721
12722   /* cancel the current editing, if it exists */
12723   if (tree_view->priv->edited_column &&
12724       tree_view->priv->edited_column->editable_widget)
12725     gtk_tree_view_stop_editing (tree_view, TRUE);
12726
12727   gtk_tree_view_real_set_cursor (tree_view, path, TRUE, TRUE);
12728
12729   if (focus_column && focus_column->visible)
12730     {
12731       GList *list;
12732       gboolean column_in_tree = FALSE;
12733
12734       for (list = tree_view->priv->columns; list; list = list->next)
12735         if (list->data == focus_column)
12736           {
12737             column_in_tree = TRUE;
12738             break;
12739           }
12740       g_return_if_fail (column_in_tree);
12741       tree_view->priv->focus_column = focus_column;
12742       if (focus_cell)
12743         gtk_tree_view_column_focus_cell (focus_column, focus_cell);
12744       if (start_editing)
12745         gtk_tree_view_start_editing (tree_view, path);
12746     }
12747 }
12748
12749 /**
12750  * gtk_tree_view_get_bin_window:
12751  * @tree_view: A #GtkTreeView
12752  *
12753  * Returns the window that @tree_view renders to.  This is used primarily to
12754  * compare to <literal>event->window</literal> to confirm that the event on
12755  * @tree_view is on the right window.
12756  *
12757  * Return value: A #GdkWindow, or %NULL when @tree_view hasn't been realized yet
12758  **/
12759 GdkWindow *
12760 gtk_tree_view_get_bin_window (GtkTreeView *tree_view)
12761 {
12762   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), NULL);
12763
12764   return tree_view->priv->bin_window;
12765 }
12766
12767 /**
12768  * gtk_tree_view_get_path_at_pos:
12769  * @tree_view: A #GtkTreeView.
12770  * @x: The x position to be identified (relative to bin_window).
12771  * @y: The y position to be identified (relative to bin_window).
12772  * @path: (out) (allow-none): A pointer to a #GtkTreePath pointer to be filled in, or %NULL
12773  * @column: (out) (allow-none): A pointer to a #GtkTreeViewColumn pointer to be filled in, or %NULL
12774  * @cell_x: (out) (allow-none): A pointer where the X coordinate relative to the cell can be placed, or %NULL
12775  * @cell_y: (out) (allow-none): A pointer where the Y coordinate relative to the cell can be placed, or %NULL
12776  *
12777  * Finds the path at the point (@x, @y), relative to bin_window coordinates
12778  * (please see gtk_tree_view_get_bin_window()).
12779  * That is, @x and @y are relative to an events coordinates. @x and @y must
12780  * come from an event on the @tree_view only where <literal>event->window ==
12781  * gtk_tree_view_get_bin_window (<!-- -->)</literal>. It is primarily for
12782  * things like popup menus. If @path is non-%NULL, then it will be filled
12783  * with the #GtkTreePath at that point.  This path should be freed with
12784  * gtk_tree_path_free().  If @column is non-%NULL, then it will be filled
12785  * with the column at that point.  @cell_x and @cell_y return the coordinates
12786  * relative to the cell background (i.e. the @background_area passed to
12787  * gtk_cell_renderer_render()).  This function is only meaningful if
12788  * @tree_view is realized.  Therefore this function will always return %FALSE
12789  * if @tree_view is not realized or does not have a model.
12790  *
12791  * For converting widget coordinates (eg. the ones you get from
12792  * GtkWidget::query-tooltip), please see
12793  * gtk_tree_view_convert_widget_to_bin_window_coords().
12794  *
12795  * Return value: %TRUE if a row exists at that coordinate.
12796  **/
12797 gboolean
12798 gtk_tree_view_get_path_at_pos (GtkTreeView        *tree_view,
12799                                gint                x,
12800                                gint                y,
12801                                GtkTreePath       **path,
12802                                GtkTreeViewColumn **column,
12803                                gint               *cell_x,
12804                                gint               *cell_y)
12805 {
12806   GtkRBTree *tree;
12807   GtkRBNode *node;
12808   gint y_offset;
12809
12810   g_return_val_if_fail (tree_view != NULL, FALSE);
12811
12812   if (path)
12813     *path = NULL;
12814   if (column)
12815     *column = NULL;
12816
12817   if (tree_view->priv->bin_window == NULL)
12818     return FALSE;
12819
12820   if (tree_view->priv->tree == NULL)
12821     return FALSE;
12822
12823   if (x > tree_view->priv->hadjustment->upper)
12824     return FALSE;
12825
12826   if (x < 0 || y < 0)
12827     return FALSE;
12828
12829   if (column || cell_x)
12830     {
12831       GtkTreeViewColumn *tmp_column;
12832       GtkTreeViewColumn *last_column = NULL;
12833       GList *list;
12834       gint remaining_x = x;
12835       gboolean found = FALSE;
12836       gboolean rtl;
12837
12838       rtl = (gtk_widget_get_direction (GTK_WIDGET (tree_view)) == GTK_TEXT_DIR_RTL);
12839       for (list = (rtl ? g_list_last (tree_view->priv->columns) : g_list_first (tree_view->priv->columns));
12840            list;
12841            list = (rtl ? list->prev : list->next))
12842         {
12843           tmp_column = list->data;
12844
12845           if (tmp_column->visible == FALSE)
12846             continue;
12847
12848           last_column = tmp_column;
12849           if (remaining_x <= tmp_column->width)
12850             {
12851               found = TRUE;
12852
12853               if (column)
12854                 *column = tmp_column;
12855
12856               if (cell_x)
12857                 *cell_x = remaining_x;
12858
12859               break;
12860             }
12861           remaining_x -= tmp_column->width;
12862         }
12863
12864       /* If found is FALSE and there is a last_column, then it the remainder
12865        * space is in that area
12866        */
12867       if (!found)
12868         {
12869           if (last_column)
12870             {
12871               if (column)
12872                 *column = last_column;
12873
12874               if (cell_x)
12875                 *cell_x = last_column->width + remaining_x;
12876             }
12877           else
12878             {
12879               return FALSE;
12880             }
12881         }
12882     }
12883
12884   y_offset = _gtk_rbtree_find_offset (tree_view->priv->tree,
12885                                       TREE_WINDOW_Y_TO_RBTREE_Y (tree_view, y),
12886                                       &tree, &node);
12887
12888   if (tree == NULL)
12889     return FALSE;
12890
12891   if (cell_y)
12892     *cell_y = y_offset;
12893
12894   if (path)
12895     *path = _gtk_tree_view_find_path (tree_view, tree, node);
12896
12897   return TRUE;
12898 }
12899
12900
12901 /**
12902  * gtk_tree_view_get_cell_area:
12903  * @tree_view: a #GtkTreeView
12904  * @path: (allow-none): a #GtkTreePath for the row, or %NULL to get only horizontal coordinates
12905  * @column: (allow-none): a #GtkTreeViewColumn for the column, or %NULL to get only vertical coordinates
12906  * @rect: rectangle to fill with cell rect
12907  *
12908  * Fills the bounding rectangle in bin_window coordinates for the cell at the
12909  * row specified by @path and the column specified by @column.  If @path is
12910  * %NULL, or points to a path not currently displayed, the @y and @height fields
12911  * of the rectangle will be filled with 0. If @column is %NULL, the @x and @width
12912  * fields will be filled with 0.  The sum of all cell rects does not cover the
12913  * entire tree; there are extra pixels in between rows, for example. The
12914  * returned rectangle is equivalent to the @cell_area passed to
12915  * gtk_cell_renderer_render().  This function is only valid if @tree_view is
12916  * realized.
12917  **/
12918 void
12919 gtk_tree_view_get_cell_area (GtkTreeView        *tree_view,
12920                              GtkTreePath        *path,
12921                              GtkTreeViewColumn  *column,
12922                              GdkRectangle       *rect)
12923 {
12924   GtkRBTree *tree = NULL;
12925   GtkRBNode *node = NULL;
12926   gint vertical_separator;
12927   gint horizontal_separator;
12928
12929   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
12930   g_return_if_fail (column == NULL || GTK_IS_TREE_VIEW_COLUMN (column));
12931   g_return_if_fail (rect != NULL);
12932   g_return_if_fail (!column || column->tree_view == (GtkWidget *) tree_view);
12933   g_return_if_fail (GTK_WIDGET_REALIZED (tree_view));
12934
12935   gtk_widget_style_get (GTK_WIDGET (tree_view),
12936                         "vertical-separator", &vertical_separator,
12937                         "horizontal-separator", &horizontal_separator,
12938                         NULL);
12939
12940   rect->x = 0;
12941   rect->y = 0;
12942   rect->width = 0;
12943   rect->height = 0;
12944
12945   if (column)
12946     {
12947       rect->x = column->button->allocation.x + horizontal_separator/2;
12948       rect->width = column->button->allocation.width - horizontal_separator;
12949     }
12950
12951   if (path)
12952     {
12953       gboolean ret = _gtk_tree_view_find_node (tree_view, path, &tree, &node);
12954
12955       /* Get vertical coords */
12956       if ((!ret && tree == NULL) || ret)
12957         return;
12958
12959       rect->y = CELL_FIRST_PIXEL (tree_view, tree, node, vertical_separator);
12960       rect->height = MAX (CELL_HEIGHT (node, vertical_separator), tree_view->priv->expander_size - vertical_separator);
12961
12962       if (column &&
12963           gtk_tree_view_is_expander_column (tree_view, column))
12964         {
12965           gint depth = gtk_tree_path_get_depth (path);
12966           gboolean rtl;
12967
12968           rtl = gtk_widget_get_direction (GTK_WIDGET (tree_view)) == GTK_TEXT_DIR_RTL;
12969
12970           if (!rtl)
12971             rect->x += (depth - 1) * tree_view->priv->level_indentation;
12972           rect->width -= (depth - 1) * tree_view->priv->level_indentation;
12973
12974           if (TREE_VIEW_DRAW_EXPANDERS (tree_view))
12975             {
12976               if (!rtl)
12977                 rect->x += depth * tree_view->priv->expander_size;
12978               rect->width -= depth * tree_view->priv->expander_size;
12979             }
12980
12981           rect->width = MAX (rect->width, 0);
12982         }
12983     }
12984 }
12985
12986 /**
12987  * gtk_tree_view_get_background_area:
12988  * @tree_view: a #GtkTreeView
12989  * @path: (allow-none): a #GtkTreePath for the row, or %NULL to get only horizontal coordinates
12990  * @column: (allow-none): a #GtkTreeViewColumn for the column, or %NULL to get only vertical coordiantes
12991  * @rect: rectangle to fill with cell background rect
12992  *
12993  * Fills the bounding rectangle in bin_window coordinates for the cell at the
12994  * row specified by @path and the column specified by @column.  If @path is
12995  * %NULL, or points to a node not found in the tree, the @y and @height fields of
12996  * the rectangle will be filled with 0. If @column is %NULL, the @x and @width
12997  * fields will be filled with 0.  The returned rectangle is equivalent to the
12998  * @background_area passed to gtk_cell_renderer_render().  These background
12999  * areas tile to cover the entire bin window.  Contrast with the @cell_area,
13000  * returned by gtk_tree_view_get_cell_area(), which returns only the cell
13001  * itself, excluding surrounding borders and the tree expander area.
13002  *
13003  **/
13004 void
13005 gtk_tree_view_get_background_area (GtkTreeView        *tree_view,
13006                                    GtkTreePath        *path,
13007                                    GtkTreeViewColumn  *column,
13008                                    GdkRectangle       *rect)
13009 {
13010   GtkRBTree *tree = NULL;
13011   GtkRBNode *node = NULL;
13012
13013   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
13014   g_return_if_fail (column == NULL || GTK_IS_TREE_VIEW_COLUMN (column));
13015   g_return_if_fail (rect != NULL);
13016
13017   rect->x = 0;
13018   rect->y = 0;
13019   rect->width = 0;
13020   rect->height = 0;
13021
13022   if (path)
13023     {
13024       /* Get vertical coords */
13025
13026       if (!_gtk_tree_view_find_node (tree_view, path, &tree, &node) &&
13027           tree == NULL)
13028         return;
13029
13030       rect->y = BACKGROUND_FIRST_PIXEL (tree_view, tree, node);
13031
13032       rect->height = ROW_HEIGHT (tree_view, BACKGROUND_HEIGHT (node));
13033     }
13034
13035   if (column)
13036     {
13037       gint x2 = 0;
13038
13039       gtk_tree_view_get_background_xrange (tree_view, tree, column, &rect->x, &x2);
13040       rect->width = x2 - rect->x;
13041     }
13042 }
13043
13044 /**
13045  * gtk_tree_view_get_visible_rect:
13046  * @tree_view: a #GtkTreeView
13047  * @visible_rect: rectangle to fill
13048  *
13049  * Fills @visible_rect with the currently-visible region of the
13050  * buffer, in tree coordinates. Convert to bin_window coordinates with
13051  * gtk_tree_view_convert_tree_to_bin_window_coords().
13052  * Tree coordinates start at 0,0 for row 0 of the tree, and cover the entire
13053  * scrollable area of the tree.
13054  **/
13055 void
13056 gtk_tree_view_get_visible_rect (GtkTreeView  *tree_view,
13057                                 GdkRectangle *visible_rect)
13058 {
13059   GtkWidget *widget;
13060
13061   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
13062
13063   widget = GTK_WIDGET (tree_view);
13064
13065   if (visible_rect)
13066     {
13067       visible_rect->x = tree_view->priv->hadjustment->value;
13068       visible_rect->y = tree_view->priv->vadjustment->value;
13069       visible_rect->width = widget->allocation.width;
13070       visible_rect->height = widget->allocation.height - TREE_VIEW_HEADER_HEIGHT (tree_view);
13071     }
13072 }
13073
13074 /**
13075  * gtk_tree_view_widget_to_tree_coords:
13076  * @tree_view: a #GtkTreeView
13077  * @wx: X coordinate relative to bin_window
13078  * @wy: Y coordinate relative to bin_window
13079  * @tx: return location for tree X coordinate
13080  * @ty: return location for tree Y coordinate
13081  *
13082  * Converts bin_window coordinates to coordinates for the
13083  * tree (the full scrollable area of the tree).
13084  *
13085  * Deprecated: 2.12: Due to historial reasons the name of this function is
13086  * incorrect.  For converting coordinates relative to the widget to
13087  * bin_window coordinates, please see
13088  * gtk_tree_view_convert_widget_to_bin_window_coords().
13089  *
13090  **/
13091 void
13092 gtk_tree_view_widget_to_tree_coords (GtkTreeView *tree_view,
13093                                       gint         wx,
13094                                       gint         wy,
13095                                       gint        *tx,
13096                                       gint        *ty)
13097 {
13098   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
13099
13100   if (tx)
13101     *tx = wx + tree_view->priv->hadjustment->value;
13102   if (ty)
13103     *ty = wy + tree_view->priv->dy;
13104 }
13105
13106 /**
13107  * gtk_tree_view_tree_to_widget_coords:
13108  * @tree_view: a #GtkTreeView
13109  * @tx: tree X coordinate
13110  * @ty: tree Y coordinate
13111  * @wx: return location for X coordinate relative to bin_window
13112  * @wy: return location for Y coordinate relative to bin_window
13113  *
13114  * Converts tree coordinates (coordinates in full scrollable area of the tree)
13115  * to bin_window coordinates.
13116  *
13117  * Deprecated: 2.12: Due to historial reasons the name of this function is
13118  * incorrect.  For converting bin_window coordinates to coordinates relative
13119  * to bin_window, please see
13120  * gtk_tree_view_convert_bin_window_to_widget_coords().
13121  *
13122  **/
13123 void
13124 gtk_tree_view_tree_to_widget_coords (GtkTreeView *tree_view,
13125                                      gint         tx,
13126                                      gint         ty,
13127                                      gint        *wx,
13128                                      gint        *wy)
13129 {
13130   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
13131
13132   if (wx)
13133     *wx = tx - tree_view->priv->hadjustment->value;
13134   if (wy)
13135     *wy = ty - tree_view->priv->dy;
13136 }
13137
13138
13139 /**
13140  * gtk_tree_view_convert_widget_to_tree_coords:
13141  * @tree_view: a #GtkTreeView
13142  * @wx: X coordinate relative to the widget
13143  * @wy: Y coordinate relative to the widget
13144  * @tx: return location for tree X coordinate
13145  * @ty: return location for tree Y coordinate
13146  *
13147  * Converts widget coordinates to coordinates for the
13148  * tree (the full scrollable area of the tree).
13149  *
13150  * Since: 2.12
13151  **/
13152 void
13153 gtk_tree_view_convert_widget_to_tree_coords (GtkTreeView *tree_view,
13154                                              gint         wx,
13155                                              gint         wy,
13156                                              gint        *tx,
13157                                              gint        *ty)
13158 {
13159   gint x, y;
13160
13161   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
13162
13163   gtk_tree_view_convert_widget_to_bin_window_coords (tree_view,
13164                                                      wx, wy,
13165                                                      &x, &y);
13166   gtk_tree_view_convert_bin_window_to_tree_coords (tree_view,
13167                                                    x, y,
13168                                                    tx, ty);
13169 }
13170
13171 /**
13172  * gtk_tree_view_convert_tree_to_widget_coords:
13173  * @tree_view: a #GtkTreeView
13174  * @tx: X coordinate relative to the tree
13175  * @ty: Y coordinate relative to the tree
13176  * @wx: return location for widget X coordinate
13177  * @wy: return location for widget Y coordinate
13178  *
13179  * Converts tree coordinates (coordinates in full scrollable area of the tree)
13180  * to widget coordinates.
13181  *
13182  * Since: 2.12
13183  **/
13184 void
13185 gtk_tree_view_convert_tree_to_widget_coords (GtkTreeView *tree_view,
13186                                              gint         tx,
13187                                              gint         ty,
13188                                              gint        *wx,
13189                                              gint        *wy)
13190 {
13191   gint x, y;
13192
13193   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
13194
13195   gtk_tree_view_convert_tree_to_bin_window_coords (tree_view,
13196                                                    tx, ty,
13197                                                    &x, &y);
13198   gtk_tree_view_convert_bin_window_to_widget_coords (tree_view,
13199                                                      x, y,
13200                                                      wx, wy);
13201 }
13202
13203 /**
13204  * gtk_tree_view_convert_widget_to_bin_window_coords:
13205  * @tree_view: a #GtkTreeView
13206  * @wx: X coordinate relative to the widget
13207  * @wy: Y coordinate relative to the widget
13208  * @bx: return location for bin_window X coordinate
13209  * @by: return location for bin_window Y coordinate
13210  *
13211  * Converts widget coordinates to coordinates for the bin_window
13212  * (see gtk_tree_view_get_bin_window()).
13213  *
13214  * Since: 2.12
13215  **/
13216 void
13217 gtk_tree_view_convert_widget_to_bin_window_coords (GtkTreeView *tree_view,
13218                                                    gint         wx,
13219                                                    gint         wy,
13220                                                    gint        *bx,
13221                                                    gint        *by)
13222 {
13223   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
13224
13225   if (bx)
13226     *bx = wx + tree_view->priv->hadjustment->value;
13227   if (by)
13228     *by = wy - TREE_VIEW_HEADER_HEIGHT (tree_view);
13229 }
13230
13231 /**
13232  * gtk_tree_view_convert_bin_window_to_widget_coords:
13233  * @tree_view: a #GtkTreeView
13234  * @bx: bin_window X coordinate
13235  * @by: bin_window Y coordinate
13236  * @wx: return location for widget X coordinate
13237  * @wy: return location for widget Y coordinate
13238  *
13239  * Converts bin_window coordinates (see gtk_tree_view_get_bin_window())
13240  * to widget relative coordinates.
13241  *
13242  * Since: 2.12
13243  **/
13244 void
13245 gtk_tree_view_convert_bin_window_to_widget_coords (GtkTreeView *tree_view,
13246                                                    gint         bx,
13247                                                    gint         by,
13248                                                    gint        *wx,
13249                                                    gint        *wy)
13250 {
13251   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
13252
13253   if (wx)
13254     *wx = bx - tree_view->priv->hadjustment->value;
13255   if (wy)
13256     *wy = by + TREE_VIEW_HEADER_HEIGHT (tree_view);
13257 }
13258
13259 /**
13260  * gtk_tree_view_convert_tree_to_bin_window_coords:
13261  * @tree_view: a #GtkTreeView
13262  * @tx: tree X coordinate
13263  * @ty: tree Y coordinate
13264  * @bx: return location for X coordinate relative to bin_window
13265  * @by: return location for Y coordinate relative to bin_window
13266  *
13267  * Converts tree coordinates (coordinates in full scrollable area of the tree)
13268  * to bin_window coordinates.
13269  *
13270  * Since: 2.12
13271  **/
13272 void
13273 gtk_tree_view_convert_tree_to_bin_window_coords (GtkTreeView *tree_view,
13274                                                  gint         tx,
13275                                                  gint         ty,
13276                                                  gint        *bx,
13277                                                  gint        *by)
13278 {
13279   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
13280
13281   if (bx)
13282     *bx = tx;
13283   if (by)
13284     *by = ty - tree_view->priv->dy;
13285 }
13286
13287 /**
13288  * gtk_tree_view_convert_bin_window_to_tree_coords:
13289  * @tree_view: a #GtkTreeView
13290  * @bx: X coordinate relative to bin_window
13291  * @by: Y coordinate relative to bin_window
13292  * @tx: return location for tree X coordinate
13293  * @ty: return location for tree Y coordinate
13294  *
13295  * Converts bin_window coordinates to coordinates for the
13296  * tree (the full scrollable area of the tree).
13297  *
13298  * Since: 2.12
13299  **/
13300 void
13301 gtk_tree_view_convert_bin_window_to_tree_coords (GtkTreeView *tree_view,
13302                                                  gint         bx,
13303                                                  gint         by,
13304                                                  gint        *tx,
13305                                                  gint        *ty)
13306 {
13307   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
13308
13309   if (tx)
13310     *tx = bx;
13311   if (ty)
13312     *ty = by + tree_view->priv->dy;
13313 }
13314
13315
13316
13317 /**
13318  * gtk_tree_view_get_visible_range:
13319  * @tree_view: A #GtkTreeView
13320  * @start_path: (allow-none): Return location for start of region, or %NULL.
13321  * @end_path: (allow-none): Return location for end of region, or %NULL.
13322  *
13323  * Sets @start_path and @end_path to be the first and last visible path.
13324  * Note that there may be invisible paths in between.
13325  *
13326  * The paths should be freed with gtk_tree_path_free() after use.
13327  *
13328  * Returns: %TRUE, if valid paths were placed in @start_path and @end_path.
13329  *
13330  * Since: 2.8
13331  **/
13332 gboolean
13333 gtk_tree_view_get_visible_range (GtkTreeView  *tree_view,
13334                                  GtkTreePath **start_path,
13335                                  GtkTreePath **end_path)
13336 {
13337   GtkRBTree *tree;
13338   GtkRBNode *node;
13339   gboolean retval;
13340
13341   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), FALSE);
13342
13343   if (!tree_view->priv->tree)
13344     return FALSE;
13345
13346   retval = TRUE;
13347
13348   if (start_path)
13349     {
13350       _gtk_rbtree_find_offset (tree_view->priv->tree,
13351                                TREE_WINDOW_Y_TO_RBTREE_Y (tree_view, 0),
13352                                &tree, &node);
13353       if (node)
13354         *start_path = _gtk_tree_view_find_path (tree_view, tree, node);
13355       else
13356         retval = FALSE;
13357     }
13358
13359   if (end_path)
13360     {
13361       gint y;
13362
13363       if (tree_view->priv->height < tree_view->priv->vadjustment->page_size)
13364         y = tree_view->priv->height - 1;
13365       else
13366         y = TREE_WINDOW_Y_TO_RBTREE_Y (tree_view, tree_view->priv->vadjustment->page_size) - 1;
13367
13368       _gtk_rbtree_find_offset (tree_view->priv->tree, y, &tree, &node);
13369       if (node)
13370         *end_path = _gtk_tree_view_find_path (tree_view, tree, node);
13371       else
13372         retval = FALSE;
13373     }
13374
13375   return retval;
13376 }
13377
13378 static void
13379 unset_reorderable (GtkTreeView *tree_view)
13380 {
13381   if (tree_view->priv->reorderable)
13382     {
13383       tree_view->priv->reorderable = FALSE;
13384       g_object_notify (G_OBJECT (tree_view), "reorderable");
13385     }
13386 }
13387
13388 /**
13389  * gtk_tree_view_enable_model_drag_source:
13390  * @tree_view: a #GtkTreeView
13391  * @start_button_mask: Mask of allowed buttons to start drag
13392  * @targets: the table of targets that the drag will support
13393  * @n_targets: the number of items in @targets
13394  * @actions: the bitmask of possible actions for a drag from this
13395  *    widget
13396  *
13397  * Turns @tree_view into a drag source for automatic DND. Calling this
13398  * method sets #GtkTreeView:reorderable to %FALSE.
13399  **/
13400 void
13401 gtk_tree_view_enable_model_drag_source (GtkTreeView              *tree_view,
13402                                         GdkModifierType           start_button_mask,
13403                                         const GtkTargetEntry     *targets,
13404                                         gint                      n_targets,
13405                                         GdkDragAction             actions)
13406 {
13407   TreeViewDragInfo *di;
13408
13409   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
13410
13411   gtk_drag_source_set (GTK_WIDGET (tree_view),
13412                        0,
13413                        targets,
13414                        n_targets,
13415                        actions);
13416
13417   di = ensure_info (tree_view);
13418
13419   di->start_button_mask = start_button_mask;
13420   di->source_actions = actions;
13421   di->source_set = TRUE;
13422
13423   unset_reorderable (tree_view);
13424 }
13425
13426 /**
13427  * gtk_tree_view_enable_model_drag_dest:
13428  * @tree_view: a #GtkTreeView
13429  * @targets: the table of targets that the drag will support
13430  * @n_targets: the number of items in @targets
13431  * @actions: the bitmask of possible actions for a drag from this
13432  *    widget
13433  *
13434  * Turns @tree_view into a drop destination for automatic DND. Calling
13435  * this method sets #GtkTreeView:reorderable to %FALSE.
13436  **/
13437 void
13438 gtk_tree_view_enable_model_drag_dest (GtkTreeView              *tree_view,
13439                                       const GtkTargetEntry     *targets,
13440                                       gint                      n_targets,
13441                                       GdkDragAction             actions)
13442 {
13443   TreeViewDragInfo *di;
13444
13445   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
13446
13447   gtk_drag_dest_set (GTK_WIDGET (tree_view),
13448                      0,
13449                      targets,
13450                      n_targets,
13451                      actions);
13452
13453   di = ensure_info (tree_view);
13454   di->dest_set = TRUE;
13455
13456   unset_reorderable (tree_view);
13457 }
13458
13459 /**
13460  * gtk_tree_view_unset_rows_drag_source:
13461  * @tree_view: a #GtkTreeView
13462  *
13463  * Undoes the effect of
13464  * gtk_tree_view_enable_model_drag_source(). Calling this method sets
13465  * #GtkTreeView:reorderable to %FALSE.
13466  **/
13467 void
13468 gtk_tree_view_unset_rows_drag_source (GtkTreeView *tree_view)
13469 {
13470   TreeViewDragInfo *di;
13471
13472   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
13473
13474   di = get_info (tree_view);
13475
13476   if (di)
13477     {
13478       if (di->source_set)
13479         {
13480           gtk_drag_source_unset (GTK_WIDGET (tree_view));
13481           di->source_set = FALSE;
13482         }
13483
13484       if (!di->dest_set && !di->source_set)
13485         remove_info (tree_view);
13486     }
13487
13488   unset_reorderable (tree_view);
13489 }
13490
13491 /**
13492  * gtk_tree_view_unset_rows_drag_dest:
13493  * @tree_view: a #GtkTreeView
13494  *
13495  * Undoes the effect of
13496  * gtk_tree_view_enable_model_drag_dest(). Calling this method sets
13497  * #GtkTreeView:reorderable to %FALSE.
13498  **/
13499 void
13500 gtk_tree_view_unset_rows_drag_dest (GtkTreeView *tree_view)
13501 {
13502   TreeViewDragInfo *di;
13503
13504   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
13505
13506   di = get_info (tree_view);
13507
13508   if (di)
13509     {
13510       if (di->dest_set)
13511         {
13512           gtk_drag_dest_unset (GTK_WIDGET (tree_view));
13513           di->dest_set = FALSE;
13514         }
13515
13516       if (!di->dest_set && !di->source_set)
13517         remove_info (tree_view);
13518     }
13519
13520   unset_reorderable (tree_view);
13521 }
13522
13523 /**
13524  * gtk_tree_view_set_drag_dest_row:
13525  * @tree_view: a #GtkTreeView
13526  * @path: (allow-none): The path of the row to highlight, or %NULL.
13527  * @pos: Specifies whether to drop before, after or into the row
13528  *
13529  * Sets the row that is highlighted for feedback.
13530  **/
13531 void
13532 gtk_tree_view_set_drag_dest_row (GtkTreeView            *tree_view,
13533                                  GtkTreePath            *path,
13534                                  GtkTreeViewDropPosition pos)
13535 {
13536   GtkTreePath *current_dest;
13537
13538   /* Note; this function is exported to allow a custom DND
13539    * implementation, so it can't touch TreeViewDragInfo
13540    */
13541
13542   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
13543
13544   current_dest = NULL;
13545
13546   if (tree_view->priv->drag_dest_row)
13547     {
13548       current_dest = gtk_tree_row_reference_get_path (tree_view->priv->drag_dest_row);
13549       gtk_tree_row_reference_free (tree_view->priv->drag_dest_row);
13550     }
13551
13552   /* special case a drop on an empty model */
13553   tree_view->priv->empty_view_drop = 0;
13554
13555   if (pos == GTK_TREE_VIEW_DROP_BEFORE && path
13556       && gtk_tree_path_get_depth (path) == 1
13557       && gtk_tree_path_get_indices (path)[0] == 0)
13558     {
13559       gint n_children;
13560
13561       n_children = gtk_tree_model_iter_n_children (tree_view->priv->model,
13562                                                    NULL);
13563
13564       if (!n_children)
13565         tree_view->priv->empty_view_drop = 1;
13566     }
13567
13568   tree_view->priv->drag_dest_pos = pos;
13569
13570   if (path)
13571     {
13572       tree_view->priv->drag_dest_row =
13573         gtk_tree_row_reference_new_proxy (G_OBJECT (tree_view), tree_view->priv->model, path);
13574       gtk_tree_view_queue_draw_path (tree_view, path, NULL);
13575     }
13576   else
13577     tree_view->priv->drag_dest_row = NULL;
13578
13579   if (current_dest)
13580     {
13581       GtkRBTree *tree, *new_tree;
13582       GtkRBNode *node, *new_node;
13583
13584       _gtk_tree_view_find_node (tree_view, current_dest, &tree, &node);
13585       _gtk_tree_view_queue_draw_node (tree_view, tree, node, NULL);
13586
13587       if (tree && node)
13588         {
13589           _gtk_rbtree_next_full (tree, node, &new_tree, &new_node);
13590           if (new_tree && new_node)
13591             _gtk_tree_view_queue_draw_node (tree_view, new_tree, new_node, NULL);
13592
13593           _gtk_rbtree_prev_full (tree, node, &new_tree, &new_node);
13594           if (new_tree && new_node)
13595             _gtk_tree_view_queue_draw_node (tree_view, new_tree, new_node, NULL);
13596         }
13597       gtk_tree_path_free (current_dest);
13598     }
13599 }
13600
13601 /**
13602  * gtk_tree_view_get_drag_dest_row:
13603  * @tree_view: a #GtkTreeView
13604  * @path: (allow-none): Return location for the path of the highlighted row, or %NULL.
13605  * @pos: (allow-none): Return location for the drop position, or %NULL
13606  *
13607  * Gets information about the row that is highlighted for feedback.
13608  **/
13609 void
13610 gtk_tree_view_get_drag_dest_row (GtkTreeView              *tree_view,
13611                                  GtkTreePath             **path,
13612                                  GtkTreeViewDropPosition  *pos)
13613 {
13614   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
13615
13616   if (path)
13617     {
13618       if (tree_view->priv->drag_dest_row)
13619         *path = gtk_tree_row_reference_get_path (tree_view->priv->drag_dest_row);
13620       else
13621         {
13622           if (tree_view->priv->empty_view_drop)
13623             *path = gtk_tree_path_new_from_indices (0, -1);
13624           else
13625             *path = NULL;
13626         }
13627     }
13628
13629   if (pos)
13630     *pos = tree_view->priv->drag_dest_pos;
13631 }
13632
13633 /**
13634  * gtk_tree_view_get_dest_row_at_pos:
13635  * @tree_view: a #GtkTreeView
13636  * @drag_x: the position to determine the destination row for
13637  * @drag_y: the position to determine the destination row for
13638  * @path: (allow-none): Return location for the path of the highlighted row, or %NULL.
13639  * @pos: (allow-none): Return location for the drop position, or %NULL
13640  *
13641  * Determines the destination row for a given position.  @drag_x and
13642  * @drag_y are expected to be in widget coordinates.  This function is only
13643  * meaningful if @tree_view is realized.  Therefore this function will always
13644  * return %FALSE if @tree_view is not realized or does not have a model.
13645  *
13646  * Return value: whether there is a row at the given position, %TRUE if this
13647  * is indeed the case.
13648  **/
13649 gboolean
13650 gtk_tree_view_get_dest_row_at_pos (GtkTreeView             *tree_view,
13651                                    gint                     drag_x,
13652                                    gint                     drag_y,
13653                                    GtkTreePath            **path,
13654                                    GtkTreeViewDropPosition *pos)
13655 {
13656   gint cell_y;
13657   gint bin_x, bin_y;
13658   gdouble offset_into_row;
13659   gdouble third;
13660   GdkRectangle cell;
13661   GtkTreeViewColumn *column = NULL;
13662   GtkTreePath *tmp_path = NULL;
13663
13664   /* Note; this function is exported to allow a custom DND
13665    * implementation, so it can't touch TreeViewDragInfo
13666    */
13667
13668   g_return_val_if_fail (tree_view != NULL, FALSE);
13669   g_return_val_if_fail (drag_x >= 0, FALSE);
13670   g_return_val_if_fail (drag_y >= 0, FALSE);
13671
13672   if (path)
13673     *path = NULL;
13674
13675   if (tree_view->priv->bin_window == NULL)
13676     return FALSE;
13677
13678   if (tree_view->priv->tree == NULL)
13679     return FALSE;
13680
13681   /* If in the top third of a row, we drop before that row; if
13682    * in the bottom third, drop after that row; if in the middle,
13683    * and the row has children, drop into the row.
13684    */
13685   gtk_tree_view_convert_widget_to_bin_window_coords (tree_view, drag_x, drag_y,
13686                                                      &bin_x, &bin_y);
13687
13688   if (!gtk_tree_view_get_path_at_pos (tree_view,
13689                                       bin_x,
13690                                       bin_y,
13691                                       &tmp_path,
13692                                       &column,
13693                                       NULL,
13694                                       &cell_y))
13695     return FALSE;
13696
13697   gtk_tree_view_get_background_area (tree_view, tmp_path, column,
13698                                      &cell);
13699
13700   offset_into_row = cell_y;
13701
13702   if (path)
13703     *path = tmp_path;
13704   else
13705     gtk_tree_path_free (tmp_path);
13706
13707   tmp_path = NULL;
13708
13709   third = cell.height / 3.0;
13710
13711   if (pos)
13712     {
13713       if (offset_into_row < third)
13714         {
13715           *pos = GTK_TREE_VIEW_DROP_BEFORE;
13716         }
13717       else if (offset_into_row < (cell.height / 2.0))
13718         {
13719           *pos = GTK_TREE_VIEW_DROP_INTO_OR_BEFORE;
13720         }
13721       else if (offset_into_row < third * 2.0)
13722         {
13723           *pos = GTK_TREE_VIEW_DROP_INTO_OR_AFTER;
13724         }
13725       else
13726         {
13727           *pos = GTK_TREE_VIEW_DROP_AFTER;
13728         }
13729     }
13730
13731   return TRUE;
13732 }
13733
13734
13735
13736 /* KEEP IN SYNC WITH GTK_TREE_VIEW_BIN_EXPOSE */
13737 /**
13738  * gtk_tree_view_create_row_drag_icon:
13739  * @tree_view: a #GtkTreeView
13740  * @path: a #GtkTreePath in @tree_view
13741  *
13742  * Creates a #GdkPixmap representation of the row at @path.
13743  * This image is used for a drag icon.
13744  *
13745  * Return value: a newly-allocated pixmap of the drag icon.
13746  **/
13747 GdkPixmap *
13748 gtk_tree_view_create_row_drag_icon (GtkTreeView  *tree_view,
13749                                     GtkTreePath  *path)
13750 {
13751   GtkTreeIter   iter;
13752   GtkRBTree    *tree;
13753   GtkRBNode    *node;
13754   gint cell_offset;
13755   GList *list;
13756   GdkRectangle background_area;
13757   GdkRectangle expose_area;
13758   GtkWidget *widget;
13759   gint depth;
13760   /* start drawing inside the black outline */
13761   gint x = 1, y = 1;
13762   GdkDrawable *drawable;
13763   gint bin_window_width;
13764   gboolean is_separator = FALSE;
13765   gboolean rtl;
13766
13767   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), NULL);
13768   g_return_val_if_fail (path != NULL, NULL);
13769
13770   widget = GTK_WIDGET (tree_view);
13771
13772   if (!GTK_WIDGET_REALIZED (tree_view))
13773     return NULL;
13774
13775   depth = gtk_tree_path_get_depth (path);
13776
13777   _gtk_tree_view_find_node (tree_view,
13778                             path,
13779                             &tree,
13780                             &node);
13781
13782   if (tree == NULL)
13783     return NULL;
13784
13785   if (!gtk_tree_model_get_iter (tree_view->priv->model,
13786                                 &iter,
13787                                 path))
13788     return NULL;
13789
13790   is_separator = row_is_separator (tree_view, &iter, NULL);
13791
13792   cell_offset = x;
13793
13794   background_area.y = y;
13795   background_area.height = ROW_HEIGHT (tree_view, BACKGROUND_HEIGHT (node));
13796
13797   gdk_drawable_get_size (tree_view->priv->bin_window,
13798                          &bin_window_width, NULL);
13799
13800   drawable = gdk_pixmap_new (tree_view->priv->bin_window,
13801                              bin_window_width + 2,
13802                              background_area.height + 2,
13803                              -1);
13804
13805   expose_area.x = 0;
13806   expose_area.y = 0;
13807   expose_area.width = bin_window_width + 2;
13808   expose_area.height = background_area.height + 2;
13809
13810   gdk_draw_rectangle (drawable,
13811                       widget->style->base_gc [GTK_WIDGET_STATE (widget)],
13812                       TRUE,
13813                       0, 0,
13814                       bin_window_width + 2,
13815                       background_area.height + 2);
13816
13817   rtl = gtk_widget_get_direction (GTK_WIDGET (tree_view)) == GTK_TEXT_DIR_RTL;
13818
13819   for (list = (rtl ? g_list_last (tree_view->priv->columns) : g_list_first (tree_view->priv->columns));
13820       list;
13821       list = (rtl ? list->prev : list->next))
13822     {
13823       GtkTreeViewColumn *column = list->data;
13824       GdkRectangle cell_area;
13825       gint vertical_separator;
13826
13827       if (!column->visible)
13828         continue;
13829
13830       gtk_tree_view_column_cell_set_cell_data (column, tree_view->priv->model, &iter,
13831                                                GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_PARENT),
13832                                                node->children?TRUE:FALSE);
13833
13834       background_area.x = cell_offset;
13835       background_area.width = column->width;
13836
13837       gtk_widget_style_get (widget,
13838                             "vertical-separator", &vertical_separator,
13839                             NULL);
13840
13841       cell_area = background_area;
13842
13843       cell_area.y += vertical_separator / 2;
13844       cell_area.height -= vertical_separator;
13845
13846       if (gtk_tree_view_is_expander_column (tree_view, column))
13847         {
13848           if (!rtl)
13849             cell_area.x += (depth - 1) * tree_view->priv->level_indentation;
13850           cell_area.width -= (depth - 1) * tree_view->priv->level_indentation;
13851
13852           if (TREE_VIEW_DRAW_EXPANDERS(tree_view))
13853             {
13854               if (!rtl)
13855                 cell_area.x += depth * tree_view->priv->expander_size;
13856               cell_area.width -= depth * tree_view->priv->expander_size;
13857             }
13858         }
13859
13860       if (gtk_tree_view_column_cell_is_visible (column))
13861         {
13862           if (is_separator)
13863             gtk_paint_hline (widget->style,
13864                              drawable,
13865                              GTK_STATE_NORMAL,
13866                              &cell_area,
13867                              widget,
13868                              NULL,
13869                              cell_area.x,
13870                              cell_area.x + cell_area.width,
13871                              cell_area.y + cell_area.height / 2);
13872           else
13873             _gtk_tree_view_column_cell_render (column,
13874                                                drawable,
13875                                                &background_area,
13876                                                &cell_area,
13877                                                &expose_area,
13878                                                0);
13879         }
13880       cell_offset += column->width;
13881     }
13882
13883   gdk_draw_rectangle (drawable,
13884                       widget->style->black_gc,
13885                       FALSE,
13886                       0, 0,
13887                       bin_window_width + 1,
13888                       background_area.height + 1);
13889
13890   return drawable;
13891 }
13892
13893
13894 /**
13895  * gtk_tree_view_set_destroy_count_func:
13896  * @tree_view: A #GtkTreeView
13897  * @func: (allow-none): Function to be called when a view row is destroyed, or %NULL
13898  * @data: (allow-none): User data to be passed to @func, or %NULL
13899  * @destroy: (allow-none): Destroy notifier for @data, or %NULL
13900  *
13901  * This function should almost never be used.  It is meant for private use by
13902  * ATK for determining the number of visible children that are removed when the
13903  * user collapses a row, or a row is deleted.
13904  **/
13905 void
13906 gtk_tree_view_set_destroy_count_func (GtkTreeView             *tree_view,
13907                                       GtkTreeDestroyCountFunc  func,
13908                                       gpointer                 data,
13909                                       GDestroyNotify           destroy)
13910 {
13911   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
13912
13913   if (tree_view->priv->destroy_count_destroy)
13914     tree_view->priv->destroy_count_destroy (tree_view->priv->destroy_count_data);
13915
13916   tree_view->priv->destroy_count_func = func;
13917   tree_view->priv->destroy_count_data = data;
13918   tree_view->priv->destroy_count_destroy = destroy;
13919 }
13920
13921
13922 /*
13923  * Interactive search
13924  */
13925
13926 /**
13927  * gtk_tree_view_set_enable_search:
13928  * @tree_view: A #GtkTreeView
13929  * @enable_search: %TRUE, if the user can search interactively
13930  *
13931  * If @enable_search is set, then the user can type in text to search through
13932  * the tree interactively (this is sometimes called "typeahead find").
13933  *
13934  * Note that even if this is %FALSE, the user can still initiate a search
13935  * using the "start-interactive-search" key binding.
13936  */
13937 void
13938 gtk_tree_view_set_enable_search (GtkTreeView *tree_view,
13939                                  gboolean     enable_search)
13940 {
13941   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
13942
13943   enable_search = !!enable_search;
13944
13945   if (tree_view->priv->enable_search != enable_search)
13946     {
13947        tree_view->priv->enable_search = enable_search;
13948        g_object_notify (G_OBJECT (tree_view), "enable-search");
13949     }
13950 }
13951
13952 /**
13953  * gtk_tree_view_get_enable_search:
13954  * @tree_view: A #GtkTreeView
13955  *
13956  * Returns whether or not the tree allows to start interactive searching
13957  * by typing in text.
13958  *
13959  * Return value: whether or not to let the user search interactively
13960  */
13961 gboolean
13962 gtk_tree_view_get_enable_search (GtkTreeView *tree_view)
13963 {
13964   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), FALSE);
13965
13966   return tree_view->priv->enable_search;
13967 }
13968
13969
13970 /**
13971  * gtk_tree_view_get_search_column:
13972  * @tree_view: A #GtkTreeView
13973  *
13974  * Gets the column searched on by the interactive search code.
13975  *
13976  * Return value: the column the interactive search code searches in.
13977  */
13978 gint
13979 gtk_tree_view_get_search_column (GtkTreeView *tree_view)
13980 {
13981   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), -1);
13982
13983   return (tree_view->priv->search_column);
13984 }
13985
13986 /**
13987  * gtk_tree_view_set_search_column:
13988  * @tree_view: A #GtkTreeView
13989  * @column: the column of the model to search in, or -1 to disable searching
13990  *
13991  * Sets @column as the column where the interactive search code should
13992  * search in for the current model.
13993  *
13994  * If the search column is set, users can use the "start-interactive-search"
13995  * key binding to bring up search popup. The enable-search property controls
13996  * whether simply typing text will also start an interactive search.
13997  *
13998  * Note that @column refers to a column of the current model. The search
13999  * column is reset to -1 when the model is changed.
14000  */
14001 void
14002 gtk_tree_view_set_search_column (GtkTreeView *tree_view,
14003                                  gint         column)
14004 {
14005   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
14006   g_return_if_fail (column >= -1);
14007
14008   if (tree_view->priv->search_column == column)
14009     return;
14010
14011   tree_view->priv->search_column = column;
14012   g_object_notify (G_OBJECT (tree_view), "search-column");
14013 }
14014
14015 /**
14016  * gtk_tree_view_get_search_equal_func:
14017  * @tree_view: A #GtkTreeView
14018  *
14019  * Returns the compare function currently in use.
14020  *
14021  * Return value: the currently used compare function for the search code.
14022  */
14023
14024 GtkTreeViewSearchEqualFunc
14025 gtk_tree_view_get_search_equal_func (GtkTreeView *tree_view)
14026 {
14027   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), NULL);
14028
14029   return tree_view->priv->search_equal_func;
14030 }
14031
14032 /**
14033  * gtk_tree_view_set_search_equal_func:
14034  * @tree_view: A #GtkTreeView
14035  * @search_equal_func: the compare function to use during the search
14036  * @search_user_data: (allow-none): user data to pass to @search_equal_func, or %NULL
14037  * @search_destroy: (allow-none): Destroy notifier for @search_user_data, or %NULL
14038  *
14039  * Sets the compare function for the interactive search capabilities; note
14040  * that somewhat like strcmp() returning 0 for equality
14041  * #GtkTreeViewSearchEqualFunc returns %FALSE on matches.
14042  **/
14043 void
14044 gtk_tree_view_set_search_equal_func (GtkTreeView                *tree_view,
14045                                      GtkTreeViewSearchEqualFunc  search_equal_func,
14046                                      gpointer                    search_user_data,
14047                                      GDestroyNotify              search_destroy)
14048 {
14049   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
14050   g_return_if_fail (search_equal_func != NULL);
14051
14052   if (tree_view->priv->search_destroy)
14053     tree_view->priv->search_destroy (tree_view->priv->search_user_data);
14054
14055   tree_view->priv->search_equal_func = search_equal_func;
14056   tree_view->priv->search_user_data = search_user_data;
14057   tree_view->priv->search_destroy = search_destroy;
14058   if (tree_view->priv->search_equal_func == NULL)
14059     tree_view->priv->search_equal_func = gtk_tree_view_search_equal_func;
14060 }
14061
14062 /**
14063  * gtk_tree_view_get_search_entry:
14064  * @tree_view: A #GtkTreeView
14065  *
14066  * Returns the #GtkEntry which is currently in use as interactive search
14067  * entry for @tree_view.  In case the built-in entry is being used, %NULL
14068  * will be returned.
14069  *
14070  * Return value: the entry currently in use as search entry.
14071  *
14072  * Since: 2.10
14073  */
14074 GtkEntry *
14075 gtk_tree_view_get_search_entry (GtkTreeView *tree_view)
14076 {
14077   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), NULL);
14078
14079   if (tree_view->priv->search_custom_entry_set)
14080     return GTK_ENTRY (tree_view->priv->search_entry);
14081
14082   return NULL;
14083 }
14084
14085 /**
14086  * gtk_tree_view_set_search_entry:
14087  * @tree_view: A #GtkTreeView
14088  * @entry: (allow-none): the entry the interactive search code of @tree_view should use or %NULL
14089  *
14090  * Sets the entry which the interactive search code will use for this
14091  * @tree_view.  This is useful when you want to provide a search entry
14092  * in our interface at all time at a fixed position.  Passing %NULL for
14093  * @entry will make the interactive search code use the built-in popup
14094  * entry again.
14095  *
14096  * Since: 2.10
14097  */
14098 void
14099 gtk_tree_view_set_search_entry (GtkTreeView *tree_view,
14100                                 GtkEntry    *entry)
14101 {
14102   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
14103   g_return_if_fail (entry == NULL || GTK_IS_ENTRY (entry));
14104
14105   if (tree_view->priv->search_custom_entry_set)
14106     {
14107       if (tree_view->priv->search_entry_changed_id)
14108         {
14109           g_signal_handler_disconnect (tree_view->priv->search_entry,
14110                                        tree_view->priv->search_entry_changed_id);
14111           tree_view->priv->search_entry_changed_id = 0;
14112         }
14113       g_signal_handlers_disconnect_by_func (tree_view->priv->search_entry,
14114                                             G_CALLBACK (gtk_tree_view_search_key_press_event),
14115                                             tree_view);
14116
14117       g_object_unref (tree_view->priv->search_entry);
14118     }
14119   else if (tree_view->priv->search_window)
14120     {
14121       gtk_widget_destroy (tree_view->priv->search_window);
14122
14123       tree_view->priv->search_window = NULL;
14124     }
14125
14126   if (entry)
14127     {
14128       tree_view->priv->search_entry = g_object_ref (entry);
14129       tree_view->priv->search_custom_entry_set = TRUE;
14130
14131       if (tree_view->priv->search_entry_changed_id == 0)
14132         {
14133           tree_view->priv->search_entry_changed_id =
14134             g_signal_connect (tree_view->priv->search_entry, "changed",
14135                               G_CALLBACK (gtk_tree_view_search_init),
14136                               tree_view);
14137         }
14138
14139         g_signal_connect (tree_view->priv->search_entry, "key-press-event",
14140                           G_CALLBACK (gtk_tree_view_search_key_press_event),
14141                           tree_view);
14142
14143         gtk_tree_view_search_init (tree_view->priv->search_entry, tree_view);
14144     }
14145   else
14146     {
14147       tree_view->priv->search_entry = NULL;
14148       tree_view->priv->search_custom_entry_set = FALSE;
14149     }
14150 }
14151
14152 /**
14153  * gtk_tree_view_set_search_position_func:
14154  * @tree_view: A #GtkTreeView
14155  * @func: (allow-none): the function to use to position the search dialog, or %NULL
14156  *    to use the default search position function
14157  * @data: (allow-none): user data to pass to @func, or %NULL
14158  * @destroy: (allow-none): Destroy notifier for @data, or %NULL
14159  *
14160  * Sets the function to use when positioning the search dialog.
14161  *
14162  * Since: 2.10
14163  **/
14164 void
14165 gtk_tree_view_set_search_position_func (GtkTreeView                   *tree_view,
14166                                         GtkTreeViewSearchPositionFunc  func,
14167                                         gpointer                       user_data,
14168                                         GDestroyNotify                 destroy)
14169 {
14170   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
14171
14172   if (tree_view->priv->search_position_destroy)
14173     tree_view->priv->search_position_destroy (tree_view->priv->search_position_user_data);
14174
14175   tree_view->priv->search_position_func = func;
14176   tree_view->priv->search_position_user_data = user_data;
14177   tree_view->priv->search_position_destroy = destroy;
14178   if (tree_view->priv->search_position_func == NULL)
14179     tree_view->priv->search_position_func = gtk_tree_view_search_position_func;
14180 }
14181
14182 /**
14183  * gtk_tree_view_get_search_position_func:
14184  * @tree_view: A #GtkTreeView
14185  *
14186  * Returns the positioning function currently in use.
14187  *
14188  * Return value: the currently used function for positioning the search dialog.
14189  *
14190  * Since: 2.10
14191  */
14192 GtkTreeViewSearchPositionFunc
14193 gtk_tree_view_get_search_position_func (GtkTreeView *tree_view)
14194 {
14195   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), NULL);
14196
14197   return tree_view->priv->search_position_func;
14198 }
14199
14200
14201 static void
14202 gtk_tree_view_search_dialog_hide (GtkWidget   *search_dialog,
14203                                   GtkTreeView *tree_view)
14204 {
14205   if (tree_view->priv->disable_popdown)
14206     return;
14207
14208   if (tree_view->priv->search_entry_changed_id)
14209     {
14210       g_signal_handler_disconnect (tree_view->priv->search_entry,
14211                                    tree_view->priv->search_entry_changed_id);
14212       tree_view->priv->search_entry_changed_id = 0;
14213     }
14214   if (tree_view->priv->typeselect_flush_timeout)
14215     {
14216       g_source_remove (tree_view->priv->typeselect_flush_timeout);
14217       tree_view->priv->typeselect_flush_timeout = 0;
14218     }
14219
14220   if (gtk_widget_get_visible (search_dialog))
14221     {
14222       /* send focus-in event */
14223       send_focus_change (GTK_WIDGET (tree_view->priv->search_entry), FALSE);
14224       gtk_widget_hide (search_dialog);
14225       gtk_entry_set_text (GTK_ENTRY (tree_view->priv->search_entry), "");
14226       send_focus_change (GTK_WIDGET (tree_view), TRUE);
14227     }
14228 }
14229
14230 static void
14231 gtk_tree_view_search_position_func (GtkTreeView *tree_view,
14232                                     GtkWidget   *search_dialog,
14233                                     gpointer     user_data)
14234 {
14235   gint x, y;
14236   gint tree_x, tree_y;
14237   gint tree_width, tree_height;
14238   GdkWindow *tree_window = GTK_WIDGET (tree_view)->window;
14239   GdkScreen *screen = gdk_drawable_get_screen (tree_window);
14240   GtkRequisition requisition;
14241   gint monitor_num;
14242   GdkRectangle monitor;
14243
14244   monitor_num = gdk_screen_get_monitor_at_window (screen, tree_window);
14245   gdk_screen_get_monitor_geometry (screen, monitor_num, &monitor);
14246
14247   gtk_widget_realize (search_dialog);
14248
14249   gdk_window_get_origin (tree_window, &tree_x, &tree_y);
14250   gdk_drawable_get_size (tree_window,
14251                          &tree_width,
14252                          &tree_height);
14253   gtk_widget_size_request (search_dialog, &requisition);
14254
14255   if (tree_x + tree_width > gdk_screen_get_width (screen))
14256     x = gdk_screen_get_width (screen) - requisition.width;
14257   else if (tree_x + tree_width - requisition.width < 0)
14258     x = 0;
14259   else
14260     x = tree_x + tree_width - requisition.width;
14261
14262   if (tree_y + tree_height + requisition.height > gdk_screen_get_height (screen))
14263     y = gdk_screen_get_height (screen) - requisition.height;
14264   else if (tree_y + tree_height < 0) /* isn't really possible ... */
14265     y = 0;
14266   else
14267     y = tree_y + tree_height;
14268
14269   gtk_window_move (GTK_WINDOW (search_dialog), x, y);
14270 }
14271
14272 static void
14273 gtk_tree_view_search_disable_popdown (GtkEntry *entry,
14274                                       GtkMenu  *menu,
14275                                       gpointer  data)
14276 {
14277   GtkTreeView *tree_view = (GtkTreeView *)data;
14278
14279   tree_view->priv->disable_popdown = 1;
14280   g_signal_connect (menu, "hide",
14281                     G_CALLBACK (gtk_tree_view_search_enable_popdown), data);
14282 }
14283
14284 /* Because we're visible but offscreen, we just set a flag in the preedit
14285  * callback.
14286  */
14287 static void
14288 gtk_tree_view_search_preedit_changed (GtkIMContext *im_context,
14289                                       GtkTreeView  *tree_view)
14290 {
14291   tree_view->priv->imcontext_changed = 1;
14292   if (tree_view->priv->typeselect_flush_timeout)
14293     {
14294       g_source_remove (tree_view->priv->typeselect_flush_timeout);
14295       tree_view->priv->typeselect_flush_timeout =
14296         gdk_threads_add_timeout (GTK_TREE_VIEW_SEARCH_DIALOG_TIMEOUT,
14297                        (GSourceFunc) gtk_tree_view_search_entry_flush_timeout,
14298                        tree_view);
14299     }
14300
14301 }
14302
14303 static void
14304 gtk_tree_view_search_activate (GtkEntry    *entry,
14305                                GtkTreeView *tree_view)
14306 {
14307   GtkTreePath *path;
14308   GtkRBNode *node;
14309   GtkRBTree *tree;
14310
14311   gtk_tree_view_search_dialog_hide (tree_view->priv->search_window,
14312                                     tree_view);
14313
14314   /* If we have a row selected and it's the cursor row, we activate
14315    * the row XXX */
14316   if (gtk_tree_row_reference_valid (tree_view->priv->cursor))
14317     {
14318       path = gtk_tree_row_reference_get_path (tree_view->priv->cursor);
14319
14320       _gtk_tree_view_find_node (tree_view, path, &tree, &node);
14321
14322       if (node && GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_SELECTED))
14323         gtk_tree_view_row_activated (tree_view, path, tree_view->priv->focus_column);
14324
14325       gtk_tree_path_free (path);
14326     }
14327 }
14328
14329 static gboolean
14330 gtk_tree_view_real_search_enable_popdown (gpointer data)
14331 {
14332   GtkTreeView *tree_view = (GtkTreeView *)data;
14333
14334   tree_view->priv->disable_popdown = 0;
14335
14336   return FALSE;
14337 }
14338
14339 static void
14340 gtk_tree_view_search_enable_popdown (GtkWidget *widget,
14341                                      gpointer   data)
14342 {
14343   gdk_threads_add_timeout_full (G_PRIORITY_HIGH, 200, gtk_tree_view_real_search_enable_popdown, g_object_ref (data), g_object_unref);
14344 }
14345
14346 static gboolean
14347 gtk_tree_view_search_delete_event (GtkWidget *widget,
14348                                    GdkEventAny *event,
14349                                    GtkTreeView *tree_view)
14350 {
14351   g_return_val_if_fail (GTK_IS_WIDGET (widget), FALSE);
14352
14353   gtk_tree_view_search_dialog_hide (widget, tree_view);
14354
14355   return TRUE;
14356 }
14357
14358 static gboolean
14359 gtk_tree_view_search_button_press_event (GtkWidget *widget,
14360                                          GdkEventButton *event,
14361                                          GtkTreeView *tree_view)
14362 {
14363   g_return_val_if_fail (GTK_IS_WIDGET (widget), FALSE);
14364
14365   gtk_tree_view_search_dialog_hide (widget, tree_view);
14366
14367   if (event->window == tree_view->priv->bin_window)
14368     gtk_tree_view_button_press (GTK_WIDGET (tree_view), event);
14369
14370   return TRUE;
14371 }
14372
14373 static gboolean
14374 gtk_tree_view_search_scroll_event (GtkWidget *widget,
14375                                    GdkEventScroll *event,
14376                                    GtkTreeView *tree_view)
14377 {
14378   gboolean retval = FALSE;
14379
14380   if (event->direction == GDK_SCROLL_UP)
14381     {
14382       gtk_tree_view_search_move (widget, tree_view, TRUE);
14383       retval = TRUE;
14384     }
14385   else if (event->direction == GDK_SCROLL_DOWN)
14386     {
14387       gtk_tree_view_search_move (widget, tree_view, FALSE);
14388       retval = TRUE;
14389     }
14390
14391   /* renew the flush timeout */
14392   if (retval && tree_view->priv->typeselect_flush_timeout
14393       && !tree_view->priv->search_custom_entry_set)
14394     {
14395       g_source_remove (tree_view->priv->typeselect_flush_timeout);
14396       tree_view->priv->typeselect_flush_timeout =
14397         gdk_threads_add_timeout (GTK_TREE_VIEW_SEARCH_DIALOG_TIMEOUT,
14398                        (GSourceFunc) gtk_tree_view_search_entry_flush_timeout,
14399                        tree_view);
14400     }
14401
14402   return retval;
14403 }
14404
14405 static gboolean
14406 gtk_tree_view_search_key_press_event (GtkWidget *widget,
14407                                       GdkEventKey *event,
14408                                       GtkTreeView *tree_view)
14409 {
14410   gboolean retval = FALSE;
14411
14412   g_return_val_if_fail (GTK_IS_WIDGET (widget), FALSE);
14413   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), FALSE);
14414
14415   /* close window and cancel the search */
14416   if (!tree_view->priv->search_custom_entry_set
14417       && (event->keyval == GDK_Escape ||
14418           event->keyval == GDK_Tab ||
14419             event->keyval == GDK_KP_Tab ||
14420             event->keyval == GDK_ISO_Left_Tab))
14421     {
14422       gtk_tree_view_search_dialog_hide (widget, tree_view);
14423       return TRUE;
14424     }
14425
14426   /* select previous matching iter */
14427   if (event->keyval == GDK_Up || event->keyval == GDK_KP_Up)
14428     {
14429       if (!gtk_tree_view_search_move (widget, tree_view, TRUE))
14430         gtk_widget_error_bell (widget);
14431
14432       retval = TRUE;
14433     }
14434
14435   if (((event->state & (GTK_DEFAULT_ACCEL_MOD_MASK | GDK_SHIFT_MASK)) == (GTK_DEFAULT_ACCEL_MOD_MASK | GDK_SHIFT_MASK))
14436       && (event->keyval == GDK_g || event->keyval == GDK_G))
14437     {
14438       if (!gtk_tree_view_search_move (widget, tree_view, TRUE))
14439         gtk_widget_error_bell (widget);
14440
14441       retval = TRUE;
14442     }
14443
14444   /* select next matching iter */
14445   if (event->keyval == GDK_Down || event->keyval == GDK_KP_Down)
14446     {
14447       if (!gtk_tree_view_search_move (widget, tree_view, FALSE))
14448         gtk_widget_error_bell (widget);
14449
14450       retval = TRUE;
14451     }
14452
14453   if (((event->state & (GTK_DEFAULT_ACCEL_MOD_MASK | GDK_SHIFT_MASK)) == GTK_DEFAULT_ACCEL_MOD_MASK)
14454       && (event->keyval == GDK_g || event->keyval == GDK_G))
14455     {
14456       if (!gtk_tree_view_search_move (widget, tree_view, FALSE))
14457         gtk_widget_error_bell (widget);
14458
14459       retval = TRUE;
14460     }
14461
14462   /* renew the flush timeout */
14463   if (retval && tree_view->priv->typeselect_flush_timeout
14464       && !tree_view->priv->search_custom_entry_set)
14465     {
14466       g_source_remove (tree_view->priv->typeselect_flush_timeout);
14467       tree_view->priv->typeselect_flush_timeout =
14468         gdk_threads_add_timeout (GTK_TREE_VIEW_SEARCH_DIALOG_TIMEOUT,
14469                        (GSourceFunc) gtk_tree_view_search_entry_flush_timeout,
14470                        tree_view);
14471     }
14472
14473   return retval;
14474 }
14475
14476 /*  this function returns FALSE if there is a search string but
14477  *  nothing was found, and TRUE otherwise.
14478  */
14479 static gboolean
14480 gtk_tree_view_search_move (GtkWidget   *window,
14481                            GtkTreeView *tree_view,
14482                            gboolean     up)
14483 {
14484   gboolean ret;
14485   gint len;
14486   gint count = 0;
14487   const gchar *text;
14488   GtkTreeIter iter;
14489   GtkTreeModel *model;
14490   GtkTreeSelection *selection;
14491
14492   text = gtk_entry_get_text (GTK_ENTRY (tree_view->priv->search_entry));
14493
14494   g_return_val_if_fail (text != NULL, FALSE);
14495
14496   len = strlen (text);
14497
14498   if (up && tree_view->priv->selected_iter == 1)
14499     return strlen (text) < 1;
14500
14501   len = strlen (text);
14502
14503   if (len < 1)
14504     return TRUE;
14505
14506   model = gtk_tree_view_get_model (tree_view);
14507   selection = gtk_tree_view_get_selection (tree_view);
14508
14509   /* search */
14510   gtk_tree_selection_unselect_all (selection);
14511   if (!gtk_tree_model_get_iter_first (model, &iter))
14512     return TRUE;
14513
14514   ret = gtk_tree_view_search_iter (model, selection, &iter, text,
14515                                    &count, up?((tree_view->priv->selected_iter) - 1):((tree_view->priv->selected_iter + 1)));
14516
14517   if (ret)
14518     {
14519       /* found */
14520       tree_view->priv->selected_iter += up?(-1):(1);
14521       return TRUE;
14522     }
14523   else
14524     {
14525       /* return to old iter */
14526       count = 0;
14527       gtk_tree_model_get_iter_first (model, &iter);
14528       gtk_tree_view_search_iter (model, selection,
14529                                  &iter, text,
14530                                  &count, tree_view->priv->selected_iter);
14531       return FALSE;
14532     }
14533 }
14534
14535 static gboolean
14536 gtk_tree_view_search_equal_func (GtkTreeModel *model,
14537                                  gint          column,
14538                                  const gchar  *key,
14539                                  GtkTreeIter  *iter,
14540                                  gpointer      search_data)
14541 {
14542   gboolean retval = TRUE;
14543   const gchar *str;
14544   gchar *normalized_string;
14545   gchar *normalized_key;
14546   gchar *case_normalized_string = NULL;
14547   gchar *case_normalized_key = NULL;
14548   GValue value = {0,};
14549   GValue transformed = {0,};
14550
14551   gtk_tree_model_get_value (model, iter, column, &value);
14552
14553   g_value_init (&transformed, G_TYPE_STRING);
14554
14555   if (!g_value_transform (&value, &transformed))
14556     {
14557       g_value_unset (&value);
14558       return TRUE;
14559     }
14560
14561   g_value_unset (&value);
14562
14563   str = g_value_get_string (&transformed);
14564   if (!str)
14565     {
14566       g_value_unset (&transformed);
14567       return TRUE;
14568     }
14569
14570   normalized_string = g_utf8_normalize (str, -1, G_NORMALIZE_ALL);
14571   normalized_key = g_utf8_normalize (key, -1, G_NORMALIZE_ALL);
14572
14573   if (normalized_string && normalized_key)
14574     {
14575       case_normalized_string = g_utf8_casefold (normalized_string, -1);
14576       case_normalized_key = g_utf8_casefold (normalized_key, -1);
14577
14578       if (strncmp (case_normalized_key, case_normalized_string, strlen (case_normalized_key)) == 0)
14579         retval = FALSE;
14580     }
14581
14582   g_value_unset (&transformed);
14583   g_free (normalized_key);
14584   g_free (normalized_string);
14585   g_free (case_normalized_key);
14586   g_free (case_normalized_string);
14587
14588   return retval;
14589 }
14590
14591 static gboolean
14592 gtk_tree_view_search_iter (GtkTreeModel     *model,
14593                            GtkTreeSelection *selection,
14594                            GtkTreeIter      *iter,
14595                            const gchar      *text,
14596                            gint             *count,
14597                            gint              n)
14598 {
14599   GtkRBTree *tree = NULL;
14600   GtkRBNode *node = NULL;
14601   GtkTreePath *path;
14602
14603   GtkTreeView *tree_view = gtk_tree_selection_get_tree_view (selection);
14604
14605   path = gtk_tree_model_get_path (model, iter);
14606   _gtk_tree_view_find_node (tree_view, path, &tree, &node);
14607
14608   do
14609     {
14610       if (! tree_view->priv->search_equal_func (model, tree_view->priv->search_column, text, iter, tree_view->priv->search_user_data))
14611         {
14612           (*count)++;
14613           if (*count == n)
14614             {
14615               gtk_tree_view_scroll_to_cell (tree_view, path, NULL,
14616                                             TRUE, 0.5, 0.0);
14617               gtk_tree_selection_select_iter (selection, iter);
14618               gtk_tree_view_real_set_cursor (tree_view, path, FALSE, TRUE);
14619
14620               if (path)
14621                 gtk_tree_path_free (path);
14622
14623               return TRUE;
14624             }
14625         }
14626
14627       if (node->children)
14628         {
14629           gboolean has_child;
14630           GtkTreeIter tmp;
14631
14632           tree = node->children;
14633           node = tree->root;
14634
14635           while (node->left != tree->nil)
14636             node = node->left;
14637
14638           tmp = *iter;
14639           has_child = gtk_tree_model_iter_children (model, iter, &tmp);
14640           gtk_tree_path_down (path);
14641
14642           /* sanity check */
14643           TREE_VIEW_INTERNAL_ASSERT (has_child, FALSE);
14644         }
14645       else
14646         {
14647           gboolean done = FALSE;
14648
14649           do
14650             {
14651               node = _gtk_rbtree_next (tree, node);
14652
14653               if (node)
14654                 {
14655                   gboolean has_next;
14656
14657                   has_next = gtk_tree_model_iter_next (model, iter);
14658
14659                   done = TRUE;
14660                   gtk_tree_path_next (path);
14661
14662                   /* sanity check */
14663                   TREE_VIEW_INTERNAL_ASSERT (has_next, FALSE);
14664                 }
14665               else
14666                 {
14667                   gboolean has_parent;
14668                   GtkTreeIter tmp_iter = *iter;
14669
14670                   node = tree->parent_node;
14671                   tree = tree->parent_tree;
14672
14673                   if (!tree)
14674                     {
14675                       if (path)
14676                         gtk_tree_path_free (path);
14677
14678                       /* we've run out of tree, done with this func */
14679                       return FALSE;
14680                     }
14681
14682                   has_parent = gtk_tree_model_iter_parent (model,
14683                                                            iter,
14684                                                            &tmp_iter);
14685                   gtk_tree_path_up (path);
14686
14687                   /* sanity check */
14688                   TREE_VIEW_INTERNAL_ASSERT (has_parent, FALSE);
14689                 }
14690             }
14691           while (!done);
14692         }
14693     }
14694   while (1);
14695
14696   return FALSE;
14697 }
14698
14699 static void
14700 gtk_tree_view_search_init (GtkWidget   *entry,
14701                            GtkTreeView *tree_view)
14702 {
14703   gint ret;
14704   gint count = 0;
14705   const gchar *text;
14706   GtkTreeIter iter;
14707   GtkTreeModel *model;
14708   GtkTreeSelection *selection;
14709
14710   g_return_if_fail (GTK_IS_ENTRY (entry));
14711   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
14712
14713   text = gtk_entry_get_text (GTK_ENTRY (entry));
14714
14715   model = gtk_tree_view_get_model (tree_view);
14716   selection = gtk_tree_view_get_selection (tree_view);
14717
14718   /* search */
14719   gtk_tree_selection_unselect_all (selection);
14720   if (tree_view->priv->typeselect_flush_timeout
14721       && !tree_view->priv->search_custom_entry_set)
14722     {
14723       g_source_remove (tree_view->priv->typeselect_flush_timeout);
14724       tree_view->priv->typeselect_flush_timeout =
14725         gdk_threads_add_timeout (GTK_TREE_VIEW_SEARCH_DIALOG_TIMEOUT,
14726                        (GSourceFunc) gtk_tree_view_search_entry_flush_timeout,
14727                        tree_view);
14728     }
14729
14730   if (*text == '\0')
14731     return;
14732
14733   if (!gtk_tree_model_get_iter_first (model, &iter))
14734     return;
14735
14736   ret = gtk_tree_view_search_iter (model, selection,
14737                                    &iter, text,
14738                                    &count, 1);
14739
14740   if (ret)
14741     tree_view->priv->selected_iter = 1;
14742 }
14743
14744 static void
14745 gtk_tree_view_remove_widget (GtkCellEditable *cell_editable,
14746                              GtkTreeView     *tree_view)
14747 {
14748   if (tree_view->priv->edited_column == NULL)
14749     return;
14750
14751   _gtk_tree_view_column_stop_editing (tree_view->priv->edited_column);
14752   tree_view->priv->edited_column = NULL;
14753
14754   if (gtk_widget_has_focus (GTK_WIDGET (cell_editable)))
14755     gtk_widget_grab_focus (GTK_WIDGET (tree_view));
14756
14757   g_signal_handlers_disconnect_by_func (cell_editable,
14758                                         gtk_tree_view_remove_widget,
14759                                         tree_view);
14760
14761   gtk_container_remove (GTK_CONTAINER (tree_view),
14762                         GTK_WIDGET (cell_editable));
14763
14764   /* FIXME should only redraw a single node */
14765   gtk_widget_queue_draw (GTK_WIDGET (tree_view));
14766 }
14767
14768 static gboolean
14769 gtk_tree_view_start_editing (GtkTreeView *tree_view,
14770                              GtkTreePath *cursor_path)
14771 {
14772   GtkTreeIter iter;
14773   GdkRectangle background_area;
14774   GdkRectangle cell_area;
14775   GtkCellEditable *editable_widget = NULL;
14776   gchar *path_string;
14777   guint flags = 0; /* can be 0, as the flags are primarily for rendering */
14778   gint retval = FALSE;
14779   GtkRBTree *cursor_tree;
14780   GtkRBNode *cursor_node;
14781
14782   g_assert (tree_view->priv->focus_column);
14783
14784   if (! GTK_WIDGET_REALIZED (tree_view))
14785     return FALSE;
14786
14787   if (_gtk_tree_view_find_node (tree_view, cursor_path, &cursor_tree, &cursor_node) ||
14788       cursor_node == NULL)
14789     return FALSE;
14790
14791   path_string = gtk_tree_path_to_string (cursor_path);
14792   gtk_tree_model_get_iter (tree_view->priv->model, &iter, cursor_path);
14793
14794   validate_row (tree_view, cursor_tree, cursor_node, &iter, cursor_path);
14795
14796   gtk_tree_view_column_cell_set_cell_data (tree_view->priv->focus_column,
14797                                            tree_view->priv->model,
14798                                            &iter,
14799                                            GTK_RBNODE_FLAG_SET (cursor_node, GTK_RBNODE_IS_PARENT),
14800                                            cursor_node->children?TRUE:FALSE);
14801   gtk_tree_view_get_background_area (tree_view,
14802                                      cursor_path,
14803                                      tree_view->priv->focus_column,
14804                                      &background_area);
14805   gtk_tree_view_get_cell_area (tree_view,
14806                                cursor_path,
14807                                tree_view->priv->focus_column,
14808                                &cell_area);
14809
14810   if (_gtk_tree_view_column_cell_event (tree_view->priv->focus_column,
14811                                         &editable_widget,
14812                                         NULL,
14813                                         path_string,
14814                                         &background_area,
14815                                         &cell_area,
14816                                         flags))
14817     {
14818       retval = TRUE;
14819       if (editable_widget != NULL)
14820         {
14821           gint left, right;
14822           GdkRectangle area;
14823           GtkCellRenderer *cell;
14824
14825           area = cell_area;
14826           cell = _gtk_tree_view_column_get_edited_cell (tree_view->priv->focus_column);
14827
14828           _gtk_tree_view_column_get_neighbor_sizes (tree_view->priv->focus_column, cell, &left, &right);
14829
14830           area.x += left;
14831           area.width -= right + left;
14832
14833           gtk_tree_view_real_start_editing (tree_view,
14834                                             tree_view->priv->focus_column,
14835                                             cursor_path,
14836                                             editable_widget,
14837                                             &area,
14838                                             NULL,
14839                                             flags);
14840         }
14841
14842     }
14843   g_free (path_string);
14844   return retval;
14845 }
14846
14847 static void
14848 gtk_tree_view_real_start_editing (GtkTreeView       *tree_view,
14849                                   GtkTreeViewColumn *column,
14850                                   GtkTreePath       *path,
14851                                   GtkCellEditable   *cell_editable,
14852                                   GdkRectangle      *cell_area,
14853                                   GdkEvent          *event,
14854                                   guint              flags)
14855 {
14856   gint pre_val = tree_view->priv->vadjustment->value;
14857   GtkRequisition requisition;
14858
14859   tree_view->priv->edited_column = column;
14860   _gtk_tree_view_column_start_editing (column, GTK_CELL_EDITABLE (cell_editable));
14861
14862   gtk_tree_view_real_set_cursor (tree_view, path, FALSE, TRUE);
14863   cell_area->y += pre_val - (int)tree_view->priv->vadjustment->value;
14864
14865   gtk_widget_size_request (GTK_WIDGET (cell_editable), &requisition);
14866
14867   GTK_TREE_VIEW_SET_FLAG (tree_view, GTK_TREE_VIEW_DRAW_KEYFOCUS);
14868
14869   if (requisition.height < cell_area->height)
14870     {
14871       gint diff = cell_area->height - requisition.height;
14872       gtk_tree_view_put (tree_view,
14873                          GTK_WIDGET (cell_editable),
14874                          cell_area->x, cell_area->y + diff/2,
14875                          cell_area->width, requisition.height);
14876     }
14877   else
14878     {
14879       gtk_tree_view_put (tree_view,
14880                          GTK_WIDGET (cell_editable),
14881                          cell_area->x, cell_area->y,
14882                          cell_area->width, cell_area->height);
14883     }
14884
14885   gtk_cell_editable_start_editing (GTK_CELL_EDITABLE (cell_editable),
14886                                    (GdkEvent *)event);
14887
14888   gtk_widget_grab_focus (GTK_WIDGET (cell_editable));
14889   g_signal_connect (cell_editable, "remove-widget",
14890                     G_CALLBACK (gtk_tree_view_remove_widget), tree_view);
14891 }
14892
14893 static void
14894 gtk_tree_view_stop_editing (GtkTreeView *tree_view,
14895                             gboolean     cancel_editing)
14896 {
14897   GtkTreeViewColumn *column;
14898   GtkCellRenderer *cell;
14899
14900   if (tree_view->priv->edited_column == NULL)
14901     return;
14902
14903   /*
14904    * This is very evil. We need to do this, because
14905    * gtk_cell_editable_editing_done may trigger gtk_tree_view_row_changed
14906    * later on. If gtk_tree_view_row_changed notices
14907    * tree_view->priv->edited_column != NULL, it'll call
14908    * gtk_tree_view_stop_editing again. Bad things will happen then.
14909    *
14910    * Please read that again if you intend to modify anything here.
14911    */
14912
14913   column = tree_view->priv->edited_column;
14914   tree_view->priv->edited_column = NULL;
14915
14916   cell = _gtk_tree_view_column_get_edited_cell (column);
14917   gtk_cell_renderer_stop_editing (cell, cancel_editing);
14918
14919   if (!cancel_editing)
14920     gtk_cell_editable_editing_done (column->editable_widget);
14921
14922   tree_view->priv->edited_column = column;
14923
14924   gtk_cell_editable_remove_widget (column->editable_widget);
14925 }
14926
14927
14928 /**
14929  * gtk_tree_view_set_hover_selection:
14930  * @tree_view: a #GtkTreeView
14931  * @hover: %TRUE to enable hover selection mode
14932  *
14933  * Enables of disables the hover selection mode of @tree_view.
14934  * Hover selection makes the selected row follow the pointer.
14935  * Currently, this works only for the selection modes
14936  * %GTK_SELECTION_SINGLE and %GTK_SELECTION_BROWSE.
14937  *
14938  * Since: 2.6
14939  **/
14940 void
14941 gtk_tree_view_set_hover_selection (GtkTreeView *tree_view,
14942                                    gboolean     hover)
14943 {
14944   hover = hover != FALSE;
14945
14946   if (hover != tree_view->priv->hover_selection)
14947     {
14948       tree_view->priv->hover_selection = hover;
14949
14950       g_object_notify (G_OBJECT (tree_view), "hover-selection");
14951     }
14952 }
14953
14954 /**
14955  * gtk_tree_view_get_hover_selection:
14956  * @tree_view: a #GtkTreeView
14957  *
14958  * Returns whether hover selection mode is turned on for @tree_view.
14959  *
14960  * Return value: %TRUE if @tree_view is in hover selection mode
14961  *
14962  * Since: 2.6
14963  **/
14964 gboolean
14965 gtk_tree_view_get_hover_selection (GtkTreeView *tree_view)
14966 {
14967   return tree_view->priv->hover_selection;
14968 }
14969
14970 /**
14971  * gtk_tree_view_set_hover_expand:
14972  * @tree_view: a #GtkTreeView
14973  * @expand: %TRUE to enable hover selection mode
14974  *
14975  * Enables of disables the hover expansion mode of @tree_view.
14976  * Hover expansion makes rows expand or collapse if the pointer
14977  * moves over them.
14978  *
14979  * Since: 2.6
14980  **/
14981 void
14982 gtk_tree_view_set_hover_expand (GtkTreeView *tree_view,
14983                                 gboolean     expand)
14984 {
14985   expand = expand != FALSE;
14986
14987   if (expand != tree_view->priv->hover_expand)
14988     {
14989       tree_view->priv->hover_expand = expand;
14990
14991       g_object_notify (G_OBJECT (tree_view), "hover-expand");
14992     }
14993 }
14994
14995 /**
14996  * gtk_tree_view_get_hover_expand:
14997  * @tree_view: a #GtkTreeView
14998  *
14999  * Returns whether hover expansion mode is turned on for @tree_view.
15000  *
15001  * Return value: %TRUE if @tree_view is in hover expansion mode
15002  *
15003  * Since: 2.6
15004  **/
15005 gboolean
15006 gtk_tree_view_get_hover_expand (GtkTreeView *tree_view)
15007 {
15008   return tree_view->priv->hover_expand;
15009 }
15010
15011 /**
15012  * gtk_tree_view_set_rubber_banding:
15013  * @tree_view: a #GtkTreeView
15014  * @enable: %TRUE to enable rubber banding
15015  *
15016  * Enables or disables rubber banding in @tree_view.  If the selection mode
15017  * is #GTK_SELECTION_MULTIPLE, rubber banding will allow the user to select
15018  * multiple rows by dragging the mouse.
15019  *
15020  * Since: 2.10
15021  **/
15022 void
15023 gtk_tree_view_set_rubber_banding (GtkTreeView *tree_view,
15024                                   gboolean     enable)
15025 {
15026   enable = enable != FALSE;
15027
15028   if (enable != tree_view->priv->rubber_banding_enable)
15029     {
15030       tree_view->priv->rubber_banding_enable = enable;
15031
15032       g_object_notify (G_OBJECT (tree_view), "rubber-banding");
15033     }
15034 }
15035
15036 /**
15037  * gtk_tree_view_get_rubber_banding:
15038  * @tree_view: a #GtkTreeView
15039  *
15040  * Returns whether rubber banding is turned on for @tree_view.  If the
15041  * selection mode is #GTK_SELECTION_MULTIPLE, rubber banding will allow the
15042  * user to select multiple rows by dragging the mouse.
15043  *
15044  * Return value: %TRUE if rubber banding in @tree_view is enabled.
15045  *
15046  * Since: 2.10
15047  **/
15048 gboolean
15049 gtk_tree_view_get_rubber_banding (GtkTreeView *tree_view)
15050 {
15051   return tree_view->priv->rubber_banding_enable;
15052 }
15053
15054 /**
15055  * gtk_tree_view_is_rubber_banding_active:
15056  * @tree_view: a #GtkTreeView
15057  *
15058  * Returns whether a rubber banding operation is currently being done
15059  * in @tree_view.
15060  *
15061  * Return value: %TRUE if a rubber banding operation is currently being
15062  * done in @tree_view.
15063  *
15064  * Since: 2.12
15065  **/
15066 gboolean
15067 gtk_tree_view_is_rubber_banding_active (GtkTreeView *tree_view)
15068 {
15069   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), FALSE);
15070
15071   if (tree_view->priv->rubber_banding_enable
15072       && tree_view->priv->rubber_band_status == RUBBER_BAND_ACTIVE)
15073     return TRUE;
15074
15075   return FALSE;
15076 }
15077
15078 /**
15079  * gtk_tree_view_get_row_separator_func:
15080  * @tree_view: a #GtkTreeView
15081  *
15082  * Returns the current row separator function.
15083  *
15084  * Return value: the current row separator function.
15085  *
15086  * Since: 2.6
15087  **/
15088 GtkTreeViewRowSeparatorFunc
15089 gtk_tree_view_get_row_separator_func (GtkTreeView *tree_view)
15090 {
15091   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), NULL);
15092
15093   return tree_view->priv->row_separator_func;
15094 }
15095
15096 /**
15097  * gtk_tree_view_set_row_separator_func:
15098  * @tree_view: a #GtkTreeView
15099  * @func: a #GtkTreeViewRowSeparatorFunc
15100  * @data: (allow-none): user data to pass to @func, or %NULL
15101  * @destroy: (allow-none): destroy notifier for @data, or %NULL
15102  *
15103  * Sets the row separator function, which is used to determine
15104  * whether a row should be drawn as a separator. If the row separator
15105  * function is %NULL, no separators are drawn. This is the default value.
15106  *
15107  * Since: 2.6
15108  **/
15109 void
15110 gtk_tree_view_set_row_separator_func (GtkTreeView                 *tree_view,
15111                                       GtkTreeViewRowSeparatorFunc  func,
15112                                       gpointer                     data,
15113                                       GDestroyNotify               destroy)
15114 {
15115   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
15116
15117   if (tree_view->priv->row_separator_destroy)
15118     tree_view->priv->row_separator_destroy (tree_view->priv->row_separator_data);
15119
15120   tree_view->priv->row_separator_func = func;
15121   tree_view->priv->row_separator_data = data;
15122   tree_view->priv->row_separator_destroy = destroy;
15123
15124   /* Have the tree recalculate heights */
15125   _gtk_rbtree_mark_invalid (tree_view->priv->tree);
15126   gtk_widget_queue_resize (GTK_WIDGET (tree_view));
15127 }
15128
15129
15130 static void
15131 gtk_tree_view_grab_notify (GtkWidget *widget,
15132                            gboolean   was_grabbed)
15133 {
15134   GtkTreeView *tree_view = GTK_TREE_VIEW (widget);
15135
15136   tree_view->priv->in_grab = !was_grabbed;
15137
15138   if (!was_grabbed)
15139     {
15140       tree_view->priv->pressed_button = -1;
15141
15142       if (tree_view->priv->rubber_band_status)
15143         gtk_tree_view_stop_rubber_band (tree_view);
15144     }
15145 }
15146
15147 static void
15148 gtk_tree_view_state_changed (GtkWidget      *widget,
15149                              GtkStateType    previous_state)
15150 {
15151   GtkTreeView *tree_view = GTK_TREE_VIEW (widget);
15152
15153   if (GTK_WIDGET_REALIZED (widget))
15154     {
15155       gdk_window_set_back_pixmap (widget->window, NULL, FALSE);
15156       gdk_window_set_background (tree_view->priv->bin_window, &widget->style->base[widget->state]);
15157     }
15158
15159   gtk_widget_queue_draw (widget);
15160 }
15161
15162 /**
15163  * gtk_tree_view_get_grid_lines:
15164  * @tree_view: a #GtkTreeView
15165  *
15166  * Returns which grid lines are enabled in @tree_view.
15167  *
15168  * Return value: a #GtkTreeViewGridLines value indicating which grid lines
15169  * are enabled.
15170  *
15171  * Since: 2.10
15172  */
15173 GtkTreeViewGridLines
15174 gtk_tree_view_get_grid_lines (GtkTreeView *tree_view)
15175 {
15176   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), 0);
15177
15178   return tree_view->priv->grid_lines;
15179 }
15180
15181 /**
15182  * gtk_tree_view_set_grid_lines:
15183  * @tree_view: a #GtkTreeView
15184  * @grid_lines: a #GtkTreeViewGridLines value indicating which grid lines to
15185  * enable.
15186  *
15187  * Sets which grid lines to draw in @tree_view.
15188  *
15189  * Since: 2.10
15190  */
15191 void
15192 gtk_tree_view_set_grid_lines (GtkTreeView           *tree_view,
15193                               GtkTreeViewGridLines   grid_lines)
15194 {
15195   GtkTreeViewPrivate *priv;
15196   GtkWidget *widget;
15197   GtkTreeViewGridLines old_grid_lines;
15198
15199   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
15200
15201   priv = tree_view->priv;
15202   widget = GTK_WIDGET (tree_view);
15203
15204   old_grid_lines = priv->grid_lines;
15205   priv->grid_lines = grid_lines;
15206
15207   if (GTK_WIDGET_REALIZED (widget))
15208     {
15209       if (grid_lines == GTK_TREE_VIEW_GRID_LINES_NONE &&
15210           priv->grid_line_gc)
15211         {
15212           g_object_unref (priv->grid_line_gc);
15213           priv->grid_line_gc = NULL;
15214         }
15215
15216       if (grid_lines != GTK_TREE_VIEW_GRID_LINES_NONE &&
15217           !priv->grid_line_gc)
15218         {
15219           gint line_width;
15220           gint8 *dash_list;
15221
15222           gtk_widget_style_get (widget,
15223                                 "grid-line-width", &line_width,
15224                                 "grid-line-pattern", (gchar *)&dash_list,
15225                                 NULL);
15226
15227           priv->grid_line_gc = gdk_gc_new (widget->window);
15228           gdk_gc_copy (priv->grid_line_gc, widget->style->black_gc);
15229
15230           gdk_gc_set_line_attributes (priv->grid_line_gc, line_width,
15231                                       GDK_LINE_ON_OFF_DASH,
15232                                       GDK_CAP_BUTT, GDK_JOIN_MITER);
15233           gdk_gc_set_dashes (priv->grid_line_gc, 0, dash_list, 2);
15234
15235           g_free (dash_list);
15236         }
15237     }
15238
15239   if (old_grid_lines != grid_lines)
15240     {
15241       gtk_widget_queue_draw (GTK_WIDGET (tree_view));
15242
15243       g_object_notify (G_OBJECT (tree_view), "enable-grid-lines");
15244     }
15245 }
15246
15247 /**
15248  * gtk_tree_view_get_enable_tree_lines:
15249  * @tree_view: a #GtkTreeView.
15250  *
15251  * Returns whether or not tree lines are drawn in @tree_view.
15252  *
15253  * Return value: %TRUE if tree lines are drawn in @tree_view, %FALSE
15254  * otherwise.
15255  *
15256  * Since: 2.10
15257  */
15258 gboolean
15259 gtk_tree_view_get_enable_tree_lines (GtkTreeView *tree_view)
15260 {
15261   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), FALSE);
15262
15263   return tree_view->priv->tree_lines_enabled;
15264 }
15265
15266 /**
15267  * gtk_tree_view_set_enable_tree_lines:
15268  * @tree_view: a #GtkTreeView
15269  * @enabled: %TRUE to enable tree line drawing, %FALSE otherwise.
15270  *
15271  * Sets whether to draw lines interconnecting the expanders in @tree_view.
15272  * This does not have any visible effects for lists.
15273  *
15274  * Since: 2.10
15275  */
15276 void
15277 gtk_tree_view_set_enable_tree_lines (GtkTreeView *tree_view,
15278                                      gboolean     enabled)
15279 {
15280   GtkTreeViewPrivate *priv;
15281   GtkWidget *widget;
15282   gboolean was_enabled;
15283
15284   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
15285
15286   enabled = enabled != FALSE;
15287
15288   priv = tree_view->priv;
15289   widget = GTK_WIDGET (tree_view);
15290
15291   was_enabled = priv->tree_lines_enabled;
15292
15293   priv->tree_lines_enabled = enabled;
15294
15295   if (GTK_WIDGET_REALIZED (widget))
15296     {
15297       if (!enabled && priv->tree_line_gc)
15298         {
15299           g_object_unref (priv->tree_line_gc);
15300           priv->tree_line_gc = NULL;
15301         }
15302
15303       if (enabled && !priv->tree_line_gc)
15304         {
15305           gint line_width;
15306           gint8 *dash_list;
15307           gtk_widget_style_get (widget,
15308                                 "tree-line-width", &line_width,
15309                                 "tree-line-pattern", (gchar *)&dash_list,
15310                                 NULL);
15311
15312           priv->tree_line_gc = gdk_gc_new (widget->window);
15313           gdk_gc_copy (priv->tree_line_gc, widget->style->black_gc);
15314
15315           gdk_gc_set_line_attributes (priv->tree_line_gc, line_width,
15316                                       GDK_LINE_ON_OFF_DASH,
15317                                       GDK_CAP_BUTT, GDK_JOIN_MITER);
15318           gdk_gc_set_dashes (priv->tree_line_gc, 0, dash_list, 2);
15319
15320           g_free (dash_list);
15321         }
15322     }
15323
15324   if (was_enabled != enabled)
15325     {
15326       gtk_widget_queue_draw (GTK_WIDGET (tree_view));
15327
15328       g_object_notify (G_OBJECT (tree_view), "enable-tree-lines");
15329     }
15330 }
15331
15332
15333 /**
15334  * gtk_tree_view_set_show_expanders:
15335  * @tree_view: a #GtkTreeView
15336  * @enabled: %TRUE to enable expander drawing, %FALSE otherwise.
15337  *
15338  * Sets whether to draw and enable expanders and indent child rows in
15339  * @tree_view.  When disabled there will be no expanders visible in trees
15340  * and there will be no way to expand and collapse rows by default.  Also
15341  * note that hiding the expanders will disable the default indentation.  You
15342  * can set a custom indentation in this case using
15343  * gtk_tree_view_set_level_indentation().
15344  * This does not have any visible effects for lists.
15345  *
15346  * Since: 2.12
15347  */
15348 void
15349 gtk_tree_view_set_show_expanders (GtkTreeView *tree_view,
15350                                   gboolean     enabled)
15351 {
15352   gboolean was_enabled;
15353
15354   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
15355
15356   enabled = enabled != FALSE;
15357   was_enabled = GTK_TREE_VIEW_FLAG_SET (tree_view, GTK_TREE_VIEW_SHOW_EXPANDERS);
15358
15359   if (enabled)
15360     GTK_TREE_VIEW_SET_FLAG (tree_view, GTK_TREE_VIEW_SHOW_EXPANDERS);
15361   else
15362     GTK_TREE_VIEW_UNSET_FLAG (tree_view, GTK_TREE_VIEW_SHOW_EXPANDERS);
15363
15364   if (enabled != was_enabled)
15365     gtk_widget_queue_draw (GTK_WIDGET (tree_view));
15366 }
15367
15368 /**
15369  * gtk_tree_view_get_show_expanders:
15370  * @tree_view: a #GtkTreeView.
15371  *
15372  * Returns whether or not expanders are drawn in @tree_view.
15373  *
15374  * Return value: %TRUE if expanders are drawn in @tree_view, %FALSE
15375  * otherwise.
15376  *
15377  * Since: 2.12
15378  */
15379 gboolean
15380 gtk_tree_view_get_show_expanders (GtkTreeView *tree_view)
15381 {
15382   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), FALSE);
15383
15384   return GTK_TREE_VIEW_FLAG_SET (tree_view, GTK_TREE_VIEW_SHOW_EXPANDERS);
15385 }
15386
15387 /**
15388  * gtk_tree_view_set_level_indentation:
15389  * @tree_view: a #GtkTreeView
15390  * @indentation: the amount, in pixels, of extra indentation in @tree_view.
15391  *
15392  * Sets the amount of extra indentation for child levels to use in @tree_view
15393  * in addition to the default indentation.  The value should be specified in
15394  * pixels, a value of 0 disables this feature and in this case only the default
15395  * indentation will be used.
15396  * This does not have any visible effects for lists.
15397  *
15398  * Since: 2.12
15399  */
15400 void
15401 gtk_tree_view_set_level_indentation (GtkTreeView *tree_view,
15402                                      gint         indentation)
15403 {
15404   tree_view->priv->level_indentation = indentation;
15405
15406   gtk_widget_queue_draw (GTK_WIDGET (tree_view));
15407 }
15408
15409 /**
15410  * gtk_tree_view_get_level_indentation:
15411  * @tree_view: a #GtkTreeView.
15412  *
15413  * Returns the amount, in pixels, of extra indentation for child levels
15414  * in @tree_view.
15415  *
15416  * Return value: the amount of extra indentation for child levels in
15417  * @tree_view.  A return value of 0 means that this feature is disabled.
15418  *
15419  * Since: 2.12
15420  */
15421 gint
15422 gtk_tree_view_get_level_indentation (GtkTreeView *tree_view)
15423 {
15424   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), 0);
15425
15426   return tree_view->priv->level_indentation;
15427 }
15428
15429 /**
15430  * gtk_tree_view_set_tooltip_row:
15431  * @tree_view: a #GtkTreeView
15432  * @tooltip: a #GtkTooltip
15433  * @path: a #GtkTreePath
15434  *
15435  * Sets the tip area of @tooltip to be the area covered by the row at @path.
15436  * See also gtk_tree_view_set_tooltip_column() for a simpler alternative.
15437  * See also gtk_tooltip_set_tip_area().
15438  *
15439  * Since: 2.12
15440  */
15441 void
15442 gtk_tree_view_set_tooltip_row (GtkTreeView *tree_view,
15443                                GtkTooltip  *tooltip,
15444                                GtkTreePath *path)
15445 {
15446   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
15447   g_return_if_fail (GTK_IS_TOOLTIP (tooltip));
15448
15449   gtk_tree_view_set_tooltip_cell (tree_view, tooltip, path, NULL, NULL);
15450 }
15451
15452 /**
15453  * gtk_tree_view_set_tooltip_cell:
15454  * @tree_view: a #GtkTreeView
15455  * @tooltip: a #GtkTooltip
15456  * @path: (allow-none): a #GtkTreePath or %NULL
15457  * @column: (allow-none): a #GtkTreeViewColumn or %NULL
15458  * @cell: (allow-none): a #GtkCellRenderer or %NULL
15459  *
15460  * Sets the tip area of @tooltip to the area @path, @column and @cell have
15461  * in common.  For example if @path is %NULL and @column is set, the tip
15462  * area will be set to the full area covered by @column.  See also
15463  * gtk_tooltip_set_tip_area().
15464  *
15465  * Note that if @path is not specified and @cell is set and part of a column
15466  * containing the expander, the tooltip might not show and hide at the correct
15467  * position.  In such cases @path must be set to the current node under the
15468  * mouse cursor for this function to operate correctly.
15469  *
15470  * See also gtk_tree_view_set_tooltip_column() for a simpler alternative.
15471  *
15472  * Since: 2.12
15473  */
15474 void
15475 gtk_tree_view_set_tooltip_cell (GtkTreeView       *tree_view,
15476                                 GtkTooltip        *tooltip,
15477                                 GtkTreePath       *path,
15478                                 GtkTreeViewColumn *column,
15479                                 GtkCellRenderer   *cell)
15480 {
15481   GdkRectangle rect;
15482
15483   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
15484   g_return_if_fail (GTK_IS_TOOLTIP (tooltip));
15485   g_return_if_fail (column == NULL || GTK_IS_TREE_VIEW_COLUMN (column));
15486   g_return_if_fail (cell == NULL || GTK_IS_CELL_RENDERER (cell));
15487
15488   /* Determine x values. */
15489   if (column && cell)
15490     {
15491       GdkRectangle tmp;
15492       gint start, width;
15493
15494       /* We always pass in path here, whether it is NULL or not.
15495        * For cells in expander columns path must be specified so that
15496        * we can correctly account for the indentation.  This also means
15497        * that the tooltip is constrained vertically by the "Determine y
15498        * values" code below; this is not a real problem since cells actually
15499        * don't stretch vertically in constrast to columns.
15500        */
15501       gtk_tree_view_get_cell_area (tree_view, path, column, &tmp);
15502       gtk_tree_view_column_cell_get_position (column, cell, &start, &width);
15503
15504       gtk_tree_view_convert_bin_window_to_widget_coords (tree_view,
15505                                                          tmp.x + start, 0,
15506                                                          &rect.x, NULL);
15507       rect.width = width;
15508     }
15509   else if (column)
15510     {
15511       GdkRectangle tmp;
15512
15513       gtk_tree_view_get_background_area (tree_view, NULL, column, &tmp);
15514       gtk_tree_view_convert_bin_window_to_widget_coords (tree_view,
15515                                                          tmp.x, 0,
15516                                                          &rect.x, NULL);
15517       rect.width = tmp.width;
15518     }
15519   else
15520     {
15521       rect.x = 0;
15522       rect.width = GTK_WIDGET (tree_view)->allocation.width;
15523     }
15524
15525   /* Determine y values. */
15526   if (path)
15527     {
15528       GdkRectangle tmp;
15529
15530       gtk_tree_view_get_background_area (tree_view, path, NULL, &tmp);
15531       gtk_tree_view_convert_bin_window_to_widget_coords (tree_view,
15532                                                          0, tmp.y,
15533                                                          NULL, &rect.y);
15534       rect.height = tmp.height;
15535     }
15536   else
15537     {
15538       rect.y = 0;
15539       rect.height = tree_view->priv->vadjustment->page_size;
15540     }
15541
15542   gtk_tooltip_set_tip_area (tooltip, &rect);
15543 }
15544
15545 /**
15546  * gtk_tree_view_get_tooltip_context:
15547  * @tree_view: a #GtkTreeView
15548  * @x: the x coordinate (relative to widget coordinates)
15549  * @y: the y coordinate (relative to widget coordinates)
15550  * @keyboard_tip: whether this is a keyboard tooltip or not
15551  * @model: (allow-none): a pointer to receive a #GtkTreeModel or %NULL
15552  * @path: (allow-none): a pointer to receive a #GtkTreePath or %NULL
15553  * @iter: (allow-none): a pointer to receive a #GtkTreeIter or %NULL
15554  *
15555  * This function is supposed to be used in a #GtkWidget::query-tooltip
15556  * signal handler for #GtkTreeView.  The @x, @y and @keyboard_tip values
15557  * which are received in the signal handler, should be passed to this
15558  * function without modification.
15559  *
15560  * The return value indicates whether there is a tree view row at the given
15561  * coordinates (%TRUE) or not (%FALSE) for mouse tooltips.  For keyboard
15562  * tooltips the row returned will be the cursor row.  When %TRUE, then any of
15563  * @model, @path and @iter which have been provided will be set to point to
15564  * that row and the corresponding model.  @x and @y will always be converted
15565  * to be relative to @tree_view's bin_window if @keyboard_tooltip is %FALSE.
15566  *
15567  * Return value: whether or not the given tooltip context points to a row.
15568  *
15569  * Since: 2.12
15570  */
15571 gboolean
15572 gtk_tree_view_get_tooltip_context (GtkTreeView   *tree_view,
15573                                    gint          *x,
15574                                    gint          *y,
15575                                    gboolean       keyboard_tip,
15576                                    GtkTreeModel **model,
15577                                    GtkTreePath  **path,
15578                                    GtkTreeIter   *iter)
15579 {
15580   GtkTreePath *tmppath = NULL;
15581
15582   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), FALSE);
15583   g_return_val_if_fail (x != NULL, FALSE);
15584   g_return_val_if_fail (y != NULL, FALSE);
15585
15586   if (keyboard_tip)
15587     {
15588       gtk_tree_view_get_cursor (tree_view, &tmppath, NULL);
15589
15590       if (!tmppath)
15591         return FALSE;
15592     }
15593   else
15594     {
15595       gtk_tree_view_convert_widget_to_bin_window_coords (tree_view, *x, *y,
15596                                                          x, y);
15597
15598       if (!gtk_tree_view_get_path_at_pos (tree_view, *x, *y,
15599                                           &tmppath, NULL, NULL, NULL))
15600         return FALSE;
15601     }
15602
15603   if (model)
15604     *model = gtk_tree_view_get_model (tree_view);
15605
15606   if (iter)
15607     gtk_tree_model_get_iter (gtk_tree_view_get_model (tree_view),
15608                              iter, tmppath);
15609
15610   if (path)
15611     *path = tmppath;
15612   else
15613     gtk_tree_path_free (tmppath);
15614
15615   return TRUE;
15616 }
15617
15618 static gboolean
15619 gtk_tree_view_set_tooltip_query_cb (GtkWidget  *widget,
15620                                     gint        x,
15621                                     gint        y,
15622                                     gboolean    keyboard_tip,
15623                                     GtkTooltip *tooltip,
15624                                     gpointer    data)
15625 {
15626   GValue value = { 0, };
15627   GValue transformed = { 0, };
15628   GtkTreeIter iter;
15629   GtkTreePath *path;
15630   GtkTreeModel *model;
15631   GtkTreeView *tree_view = GTK_TREE_VIEW (widget);
15632
15633   if (!gtk_tree_view_get_tooltip_context (GTK_TREE_VIEW (widget),
15634                                           &x, &y,
15635                                           keyboard_tip,
15636                                           &model, &path, &iter))
15637     return FALSE;
15638
15639   gtk_tree_model_get_value (model, &iter,
15640                             tree_view->priv->tooltip_column, &value);
15641
15642   g_value_init (&transformed, G_TYPE_STRING);
15643
15644   if (!g_value_transform (&value, &transformed))
15645     {
15646       g_value_unset (&value);
15647       gtk_tree_path_free (path);
15648
15649       return FALSE;
15650     }
15651
15652   g_value_unset (&value);
15653
15654   if (!g_value_get_string (&transformed))
15655     {
15656       g_value_unset (&transformed);
15657       gtk_tree_path_free (path);
15658
15659       return FALSE;
15660     }
15661
15662   gtk_tooltip_set_markup (tooltip, g_value_get_string (&transformed));
15663   gtk_tree_view_set_tooltip_row (tree_view, tooltip, path);
15664
15665   gtk_tree_path_free (path);
15666   g_value_unset (&transformed);
15667
15668   return TRUE;
15669 }
15670
15671 /**
15672  * gtk_tree_view_set_tooltip_column:
15673  * @tree_view: a #GtkTreeView
15674  * @column: an integer, which is a valid column number for @tree_view's model
15675  *
15676  * If you only plan to have simple (text-only) tooltips on full rows, you
15677  * can use this function to have #GtkTreeView handle these automatically
15678  * for you. @column should be set to the column in @tree_view's model
15679  * containing the tooltip texts, or -1 to disable this feature.
15680  *
15681  * When enabled, #GtkWidget::has-tooltip will be set to %TRUE and
15682  * @tree_view will connect a #GtkWidget::query-tooltip signal handler.
15683  *
15684  * Note that the signal handler sets the text with gtk_tooltip_set_markup(),
15685  * so &amp;, &lt;, etc have to be escaped in the text.
15686  *
15687  * Since: 2.12
15688  */
15689 void
15690 gtk_tree_view_set_tooltip_column (GtkTreeView *tree_view,
15691                                   gint         column)
15692 {
15693   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
15694
15695   if (column == tree_view->priv->tooltip_column)
15696     return;
15697
15698   if (column == -1)
15699     {
15700       g_signal_handlers_disconnect_by_func (tree_view,
15701                                             gtk_tree_view_set_tooltip_query_cb,
15702                                             NULL);
15703       gtk_widget_set_has_tooltip (GTK_WIDGET (tree_view), FALSE);
15704     }
15705   else
15706     {
15707       if (tree_view->priv->tooltip_column == -1)
15708         {
15709           g_signal_connect (tree_view, "query-tooltip",
15710                             G_CALLBACK (gtk_tree_view_set_tooltip_query_cb), NULL);
15711           gtk_widget_set_has_tooltip (GTK_WIDGET (tree_view), TRUE);
15712         }
15713     }
15714
15715   tree_view->priv->tooltip_column = column;
15716   g_object_notify (G_OBJECT (tree_view), "tooltip-column");
15717 }
15718
15719 /**
15720  * gtk_tree_view_get_tooltip_column:
15721  * @tree_view: a #GtkTreeView
15722  *
15723  * Returns the column of @tree_view's model which is being used for
15724  * displaying tooltips on @tree_view's rows.
15725  *
15726  * Return value: the index of the tooltip column that is currently being
15727  * used, or -1 if this is disabled.
15728  *
15729  * Since: 2.12
15730  */
15731 gint
15732 gtk_tree_view_get_tooltip_column (GtkTreeView *tree_view)
15733 {
15734   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), 0);
15735
15736   return tree_view->priv->tooltip_column;
15737 }
15738
15739 static void
15740 gtk_tree_view_extended_layout_get_desired_size (GtkExtendedLayout *layout,
15741                                                 GtkRequisition    *minimal_size,
15742                                                 GtkRequisition    *desired_size)
15743 {
15744   GtkTreeView *tree_view;
15745   gint natural_width = 0;
15746   GList *column_iter;
15747   GtkRequisition requisition;
15748
15749   tree_view = GTK_TREE_VIEW (layout);
15750
15751   gtk_widget_size_request (GTK_WIDGET (layout), &requisition);
15752
15753   for (column_iter = tree_view->priv->columns; column_iter; column_iter = column_iter->next)
15754     {
15755       GtkTreeViewColumn *column = column_iter->data;
15756
15757       if (!column->visible)
15758         continue;
15759
15760       natural_width += gtk_tree_view_get_real_natural_width_from_column (tree_view, column);
15761     }
15762
15763   if (minimal_size)
15764     *minimal_size = requisition;
15765
15766   if (desired_size)
15767     {
15768       desired_size->height = requisition.height;
15769       desired_size->width = natural_width;
15770     }
15771 }
15772
15773 static void
15774 gtk_tree_view_extended_layout_init (GtkExtendedLayoutIface *iface)
15775 {
15776   iface->get_desired_size = gtk_tree_view_extended_layout_get_desired_size;
15777 }
15778
15779
15780 #define __GTK_TREE_VIEW_C__
15781 #include "gtkaliasdef.c"