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_get_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_get_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_get_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_get_realized (GTK_WIDGET (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_get_realized (GTK_WIDGET (tree_view)))
6449     return;
6450
6451   if (! tree_view->priv->presize_handler_timer)
6452     {
6453       tree_view->priv->presize_handler_timer =
6454         gdk_threads_add_idle_full (GTK_PRIORITY_RESIZE - 2, presize_handler_callback, tree_view, NULL);
6455     }
6456   if (! tree_view->priv->validate_rows_timer)
6457     {
6458       tree_view->priv->validate_rows_timer =
6459         gdk_threads_add_idle_full (GTK_TREE_VIEW_PRIORITY_VALIDATE, (GSourceFunc) validate_rows_handler, tree_view, NULL);
6460     }
6461 }
6462
6463 static gboolean
6464 scroll_sync_handler (GtkTreeView *tree_view)
6465 {
6466   if (tree_view->priv->height <= tree_view->priv->vadjustment->page_size)
6467     gtk_adjustment_set_value (GTK_ADJUSTMENT (tree_view->priv->vadjustment), 0);
6468   else if (gtk_tree_row_reference_valid (tree_view->priv->top_row))
6469     gtk_tree_view_top_row_to_dy (tree_view);
6470   else
6471     gtk_tree_view_dy_to_top_row (tree_view);
6472
6473   tree_view->priv->scroll_sync_timer = 0;
6474
6475   return FALSE;
6476 }
6477
6478 static void
6479 install_scroll_sync_handler (GtkTreeView *tree_view)
6480 {
6481   if (!gtk_widget_get_realized (GTK_WIDGET (tree_view)))
6482     return;
6483
6484   if (!tree_view->priv->scroll_sync_timer)
6485     {
6486       tree_view->priv->scroll_sync_timer =
6487         gdk_threads_add_idle_full (GTK_TREE_VIEW_PRIORITY_SCROLL_SYNC, (GSourceFunc) scroll_sync_handler, tree_view, NULL);
6488     }
6489 }
6490
6491 static void
6492 gtk_tree_view_set_top_row (GtkTreeView *tree_view,
6493                            GtkTreePath *path,
6494                            gint         offset)
6495 {
6496   gtk_tree_row_reference_free (tree_view->priv->top_row);
6497
6498   if (!path)
6499     {
6500       tree_view->priv->top_row = NULL;
6501       tree_view->priv->top_row_dy = 0;
6502     }
6503   else
6504     {
6505       tree_view->priv->top_row = gtk_tree_row_reference_new_proxy (G_OBJECT (tree_view), tree_view->priv->model, path);
6506       tree_view->priv->top_row_dy = offset;
6507     }
6508 }
6509
6510 /* Always call this iff dy is in the visible range.  If the tree is empty, then
6511  * it's set to be NULL, and top_row_dy is 0;
6512  */
6513 static void
6514 gtk_tree_view_dy_to_top_row (GtkTreeView *tree_view)
6515 {
6516   gint offset;
6517   GtkTreePath *path;
6518   GtkRBTree *tree;
6519   GtkRBNode *node;
6520
6521   if (tree_view->priv->tree == NULL)
6522     {
6523       gtk_tree_view_set_top_row (tree_view, NULL, 0);
6524     }
6525   else
6526     {
6527       offset = _gtk_rbtree_find_offset (tree_view->priv->tree,
6528                                         tree_view->priv->dy,
6529                                         &tree, &node);
6530
6531       if (tree == NULL)
6532         {
6533           gtk_tree_view_set_top_row (tree_view, NULL, 0);
6534         }
6535       else
6536         {
6537           path = _gtk_tree_view_find_path (tree_view, tree, node);
6538           gtk_tree_view_set_top_row (tree_view, path, offset);
6539           gtk_tree_path_free (path);
6540         }
6541     }
6542 }
6543
6544 static void
6545 gtk_tree_view_top_row_to_dy (GtkTreeView *tree_view)
6546 {
6547   GtkTreePath *path;
6548   GtkRBTree *tree;
6549   GtkRBNode *node;
6550   int new_dy;
6551
6552   /* Avoid recursive calls */
6553   if (tree_view->priv->in_top_row_to_dy)
6554     return;
6555
6556   if (tree_view->priv->top_row)
6557     path = gtk_tree_row_reference_get_path (tree_view->priv->top_row);
6558   else
6559     path = NULL;
6560
6561   if (!path)
6562     tree = NULL;
6563   else
6564     _gtk_tree_view_find_node (tree_view, path, &tree, &node);
6565
6566   if (path)
6567     gtk_tree_path_free (path);
6568
6569   if (tree == NULL)
6570     {
6571       /* keep dy and set new toprow */
6572       gtk_tree_row_reference_free (tree_view->priv->top_row);
6573       tree_view->priv->top_row = NULL;
6574       tree_view->priv->top_row_dy = 0;
6575       /* DO NOT install the idle handler */
6576       gtk_tree_view_dy_to_top_row (tree_view);
6577       return;
6578     }
6579
6580   if (ROW_HEIGHT (tree_view, BACKGROUND_HEIGHT (node))
6581       < tree_view->priv->top_row_dy)
6582     {
6583       /* new top row -- do NOT install the idle handler */
6584       gtk_tree_view_dy_to_top_row (tree_view);
6585       return;
6586     }
6587
6588   new_dy = _gtk_rbtree_node_find_offset (tree, node);
6589   new_dy += tree_view->priv->top_row_dy;
6590
6591   if (new_dy + tree_view->priv->vadjustment->page_size > tree_view->priv->height)
6592     new_dy = tree_view->priv->height - tree_view->priv->vadjustment->page_size;
6593
6594   new_dy = MAX (0, new_dy);
6595
6596   tree_view->priv->in_top_row_to_dy = TRUE;
6597   gtk_adjustment_set_value (tree_view->priv->vadjustment, (gdouble)new_dy);
6598   tree_view->priv->in_top_row_to_dy = FALSE;
6599 }
6600
6601
6602 void
6603 _gtk_tree_view_install_mark_rows_col_dirty (GtkTreeView *tree_view)
6604 {
6605   tree_view->priv->mark_rows_col_dirty = TRUE;
6606
6607   install_presize_handler (tree_view);
6608 }
6609
6610 /*
6611  * This function works synchronously (due to the while (validate_rows...)
6612  * loop).
6613  *
6614  * There was a check for column_type != GTK_TREE_VIEW_COLUMN_AUTOSIZE
6615  * here. You now need to check that yourself.
6616  */
6617 void
6618 _gtk_tree_view_column_autosize (GtkTreeView *tree_view,
6619                                 GtkTreeViewColumn *column)
6620 {
6621   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
6622   g_return_if_fail (GTK_IS_TREE_VIEW_COLUMN (column));
6623
6624   _gtk_tree_view_column_cell_set_dirty (column, FALSE);
6625
6626   do_presize_handler (tree_view);
6627   while (validate_rows (tree_view));
6628
6629   gtk_widget_queue_resize (GTK_WIDGET (tree_view));
6630 }
6631
6632 /* Drag-and-drop */
6633
6634 static void
6635 set_source_row (GdkDragContext *context,
6636                 GtkTreeModel   *model,
6637                 GtkTreePath    *source_row)
6638 {
6639   g_object_set_data_full (G_OBJECT (context),
6640                           I_("gtk-tree-view-source-row"),
6641                           source_row ? gtk_tree_row_reference_new (model, source_row) : NULL,
6642                           (GDestroyNotify) (source_row ? gtk_tree_row_reference_free : NULL));
6643 }
6644
6645 static GtkTreePath*
6646 get_source_row (GdkDragContext *context)
6647 {
6648   GtkTreeRowReference *ref =
6649     g_object_get_data (G_OBJECT (context), "gtk-tree-view-source-row");
6650
6651   if (ref)
6652     return gtk_tree_row_reference_get_path (ref);
6653   else
6654     return NULL;
6655 }
6656
6657 typedef struct
6658 {
6659   GtkTreeRowReference *dest_row;
6660   guint                path_down_mode   : 1;
6661   guint                empty_view_drop  : 1;
6662   guint                drop_append_mode : 1;
6663 }
6664 DestRow;
6665
6666 static void
6667 dest_row_free (gpointer data)
6668 {
6669   DestRow *dr = (DestRow *)data;
6670
6671   gtk_tree_row_reference_free (dr->dest_row);
6672   g_slice_free (DestRow, dr);
6673 }
6674
6675 static void
6676 set_dest_row (GdkDragContext *context,
6677               GtkTreeModel   *model,
6678               GtkTreePath    *dest_row,
6679               gboolean        path_down_mode,
6680               gboolean        empty_view_drop,
6681               gboolean        drop_append_mode)
6682 {
6683   DestRow *dr;
6684
6685   if (!dest_row)
6686     {
6687       g_object_set_data_full (G_OBJECT (context), I_("gtk-tree-view-dest-row"),
6688                               NULL, NULL);
6689       return;
6690     }
6691
6692   dr = g_slice_new (DestRow);
6693
6694   dr->dest_row = gtk_tree_row_reference_new (model, dest_row);
6695   dr->path_down_mode = path_down_mode != FALSE;
6696   dr->empty_view_drop = empty_view_drop != FALSE;
6697   dr->drop_append_mode = drop_append_mode != FALSE;
6698
6699   g_object_set_data_full (G_OBJECT (context), I_("gtk-tree-view-dest-row"),
6700                           dr, (GDestroyNotify) dest_row_free);
6701 }
6702
6703 static GtkTreePath*
6704 get_dest_row (GdkDragContext *context,
6705               gboolean       *path_down_mode)
6706 {
6707   DestRow *dr =
6708     g_object_get_data (G_OBJECT (context), "gtk-tree-view-dest-row");
6709
6710   if (dr)
6711     {
6712       GtkTreePath *path = NULL;
6713
6714       if (path_down_mode)
6715         *path_down_mode = dr->path_down_mode;
6716
6717       if (dr->dest_row)
6718         path = gtk_tree_row_reference_get_path (dr->dest_row);
6719       else if (dr->empty_view_drop)
6720         path = gtk_tree_path_new_from_indices (0, -1);
6721       else
6722         path = NULL;
6723
6724       if (path && dr->drop_append_mode)
6725         gtk_tree_path_next (path);
6726
6727       return path;
6728     }
6729   else
6730     return NULL;
6731 }
6732
6733 /* Get/set whether drag_motion requested the drag data and
6734  * drag_data_received should thus not actually insert the data,
6735  * since the data doesn't result from a drop.
6736  */
6737 static void
6738 set_status_pending (GdkDragContext *context,
6739                     GdkDragAction   suggested_action)
6740 {
6741   g_object_set_data (G_OBJECT (context),
6742                      I_("gtk-tree-view-status-pending"),
6743                      GINT_TO_POINTER (suggested_action));
6744 }
6745
6746 static GdkDragAction
6747 get_status_pending (GdkDragContext *context)
6748 {
6749   return GPOINTER_TO_INT (g_object_get_data (G_OBJECT (context),
6750                                              "gtk-tree-view-status-pending"));
6751 }
6752
6753 static TreeViewDragInfo*
6754 get_info (GtkTreeView *tree_view)
6755 {
6756   return g_object_get_data (G_OBJECT (tree_view), "gtk-tree-view-drag-info");
6757 }
6758
6759 static void
6760 destroy_info (TreeViewDragInfo *di)
6761 {
6762   g_slice_free (TreeViewDragInfo, di);
6763 }
6764
6765 static TreeViewDragInfo*
6766 ensure_info (GtkTreeView *tree_view)
6767 {
6768   TreeViewDragInfo *di;
6769
6770   di = get_info (tree_view);
6771
6772   if (di == NULL)
6773     {
6774       di = g_slice_new0 (TreeViewDragInfo);
6775
6776       g_object_set_data_full (G_OBJECT (tree_view),
6777                               I_("gtk-tree-view-drag-info"),
6778                               di,
6779                               (GDestroyNotify) destroy_info);
6780     }
6781
6782   return di;
6783 }
6784
6785 static void
6786 remove_info (GtkTreeView *tree_view)
6787 {
6788   g_object_set_data (G_OBJECT (tree_view), I_("gtk-tree-view-drag-info"), NULL);
6789 }
6790
6791 #if 0
6792 static gint
6793 drag_scan_timeout (gpointer data)
6794 {
6795   GtkTreeView *tree_view;
6796   gint x, y;
6797   GdkModifierType state;
6798   GtkTreePath *path = NULL;
6799   GtkTreeViewColumn *column = NULL;
6800   GdkRectangle visible_rect;
6801
6802   GDK_THREADS_ENTER ();
6803
6804   tree_view = GTK_TREE_VIEW (data);
6805
6806   gdk_window_get_pointer (tree_view->priv->bin_window,
6807                           &x, &y, &state);
6808
6809   gtk_tree_view_get_visible_rect (tree_view, &visible_rect);
6810
6811   /* See if we are near the edge. */
6812   if ((x - visible_rect.x) < SCROLL_EDGE_SIZE ||
6813       (visible_rect.x + visible_rect.width - x) < SCROLL_EDGE_SIZE ||
6814       (y - visible_rect.y) < SCROLL_EDGE_SIZE ||
6815       (visible_rect.y + visible_rect.height - y) < SCROLL_EDGE_SIZE)
6816     {
6817       gtk_tree_view_get_path_at_pos (tree_view,
6818                                      tree_view->priv->bin_window,
6819                                      x, y,
6820                                      &path,
6821                                      &column,
6822                                      NULL,
6823                                      NULL);
6824
6825       if (path != NULL)
6826         {
6827           gtk_tree_view_scroll_to_cell (tree_view,
6828                                         path,
6829                                         column,
6830                                         TRUE,
6831                                         0.5, 0.5);
6832
6833           gtk_tree_path_free (path);
6834         }
6835     }
6836
6837   GDK_THREADS_LEAVE ();
6838
6839   return TRUE;
6840 }
6841 #endif /* 0 */
6842
6843 static void
6844 add_scroll_timeout (GtkTreeView *tree_view)
6845 {
6846   if (tree_view->priv->scroll_timeout == 0)
6847     {
6848       tree_view->priv->scroll_timeout =
6849         gdk_threads_add_timeout (150, scroll_row_timeout, tree_view);
6850     }
6851 }
6852
6853 static void
6854 remove_scroll_timeout (GtkTreeView *tree_view)
6855 {
6856   if (tree_view->priv->scroll_timeout != 0)
6857     {
6858       g_source_remove (tree_view->priv->scroll_timeout);
6859       tree_view->priv->scroll_timeout = 0;
6860     }
6861 }
6862
6863 static gboolean
6864 check_model_dnd (GtkTreeModel *model,
6865                  GType         required_iface,
6866                  const gchar  *signal)
6867 {
6868   if (model == NULL || !G_TYPE_CHECK_INSTANCE_TYPE ((model), required_iface))
6869     {
6870       g_warning ("You must override the default '%s' handler "
6871                  "on GtkTreeView when using models that don't support "
6872                  "the %s interface and enabling drag-and-drop. The simplest way to do this "
6873                  "is to connect to '%s' and call "
6874                  "g_signal_stop_emission_by_name() in your signal handler to prevent "
6875                  "the default handler from running. Look at the source code "
6876                  "for the default handler in gtktreeview.c to get an idea what "
6877                  "your handler should do. (gtktreeview.c is in the GTK source "
6878                  "code.) If you're using GTK from a language other than C, "
6879                  "there may be a more natural way to override default handlers, e.g. via derivation.",
6880                  signal, g_type_name (required_iface), signal);
6881       return FALSE;
6882     }
6883   else
6884     return TRUE;
6885 }
6886
6887 static void
6888 remove_open_timeout (GtkTreeView *tree_view)
6889 {
6890   if (tree_view->priv->open_dest_timeout != 0)
6891     {
6892       g_source_remove (tree_view->priv->open_dest_timeout);
6893       tree_view->priv->open_dest_timeout = 0;
6894     }
6895 }
6896
6897
6898 static gint
6899 open_row_timeout (gpointer data)
6900 {
6901   GtkTreeView *tree_view = data;
6902   GtkTreePath *dest_path = NULL;
6903   GtkTreeViewDropPosition pos;
6904   gboolean result = FALSE;
6905
6906   gtk_tree_view_get_drag_dest_row (tree_view,
6907                                    &dest_path,
6908                                    &pos);
6909
6910   if (dest_path &&
6911       (pos == GTK_TREE_VIEW_DROP_INTO_OR_AFTER ||
6912        pos == GTK_TREE_VIEW_DROP_INTO_OR_BEFORE))
6913     {
6914       gtk_tree_view_expand_row (tree_view, dest_path, FALSE);
6915       tree_view->priv->open_dest_timeout = 0;
6916
6917       gtk_tree_path_free (dest_path);
6918     }
6919   else
6920     {
6921       if (dest_path)
6922         gtk_tree_path_free (dest_path);
6923
6924       result = TRUE;
6925     }
6926
6927   return result;
6928 }
6929
6930 static gboolean
6931 scroll_row_timeout (gpointer data)
6932 {
6933   GtkTreeView *tree_view = data;
6934
6935   gtk_tree_view_vertical_autoscroll (tree_view);
6936
6937   if (tree_view->priv->rubber_band_status == RUBBER_BAND_ACTIVE)
6938     gtk_tree_view_update_rubber_band (tree_view);
6939
6940   return TRUE;
6941 }
6942
6943 /* Returns TRUE if event should not be propagated to parent widgets */
6944 static gboolean
6945 set_destination_row (GtkTreeView    *tree_view,
6946                      GdkDragContext *context,
6947                      /* coordinates relative to the widget */
6948                      gint            x,
6949                      gint            y,
6950                      GdkDragAction  *suggested_action,
6951                      GdkAtom        *target)
6952 {
6953   GtkTreePath *path = NULL;
6954   GtkTreeViewDropPosition pos;
6955   GtkTreeViewDropPosition old_pos;
6956   TreeViewDragInfo *di;
6957   GtkWidget *widget;
6958   GtkTreePath *old_dest_path = NULL;
6959   gboolean can_drop = FALSE;
6960
6961   *suggested_action = 0;
6962   *target = GDK_NONE;
6963
6964   widget = GTK_WIDGET (tree_view);
6965
6966   di = get_info (tree_view);
6967
6968   if (di == NULL || y - TREE_VIEW_HEADER_HEIGHT (tree_view) < 0)
6969     {
6970       /* someone unset us as a drag dest, note that if
6971        * we return FALSE drag_leave isn't called
6972        */
6973
6974       gtk_tree_view_set_drag_dest_row (tree_view,
6975                                        NULL,
6976                                        GTK_TREE_VIEW_DROP_BEFORE);
6977
6978       remove_scroll_timeout (GTK_TREE_VIEW (widget));
6979       remove_open_timeout (GTK_TREE_VIEW (widget));
6980
6981       return FALSE; /* no longer a drop site */
6982     }
6983
6984   *target = gtk_drag_dest_find_target (widget, context,
6985                                        gtk_drag_dest_get_target_list (widget));
6986   if (*target == GDK_NONE)
6987     {
6988       return FALSE;
6989     }
6990
6991   if (!gtk_tree_view_get_dest_row_at_pos (tree_view,
6992                                           x, y,
6993                                           &path,
6994                                           &pos))
6995     {
6996       gint n_children;
6997       GtkTreeModel *model;
6998
6999       remove_open_timeout (tree_view);
7000
7001       /* the row got dropped on empty space, let's setup a special case
7002        */
7003
7004       if (path)
7005         gtk_tree_path_free (path);
7006
7007       model = gtk_tree_view_get_model (tree_view);
7008
7009       n_children = gtk_tree_model_iter_n_children (model, NULL);
7010       if (n_children)
7011         {
7012           pos = GTK_TREE_VIEW_DROP_AFTER;
7013           path = gtk_tree_path_new_from_indices (n_children - 1, -1);
7014         }
7015       else
7016         {
7017           pos = GTK_TREE_VIEW_DROP_BEFORE;
7018           path = gtk_tree_path_new_from_indices (0, -1);
7019         }
7020
7021       can_drop = TRUE;
7022
7023       goto out;
7024     }
7025
7026   g_assert (path);
7027
7028   /* If we left the current row's "open" zone, unset the timeout for
7029    * opening the row
7030    */
7031   gtk_tree_view_get_drag_dest_row (tree_view,
7032                                    &old_dest_path,
7033                                    &old_pos);
7034
7035   if (old_dest_path &&
7036       (gtk_tree_path_compare (path, old_dest_path) != 0 ||
7037        !(pos == GTK_TREE_VIEW_DROP_INTO_OR_AFTER ||
7038          pos == GTK_TREE_VIEW_DROP_INTO_OR_BEFORE)))
7039     remove_open_timeout (tree_view);
7040
7041   if (old_dest_path)
7042     gtk_tree_path_free (old_dest_path);
7043
7044   if (TRUE /* FIXME if the location droppable predicate */)
7045     {
7046       can_drop = TRUE;
7047     }
7048
7049 out:
7050   if (can_drop)
7051     {
7052       GtkWidget *source_widget;
7053
7054       *suggested_action = context->suggested_action;
7055       source_widget = gtk_drag_get_source_widget (context);
7056
7057       if (source_widget == widget)
7058         {
7059           /* Default to MOVE, unless the user has
7060            * pressed ctrl or shift to affect available actions
7061            */
7062           if ((context->actions & GDK_ACTION_MOVE) != 0)
7063             *suggested_action = GDK_ACTION_MOVE;
7064         }
7065
7066       gtk_tree_view_set_drag_dest_row (GTK_TREE_VIEW (widget),
7067                                        path, pos);
7068     }
7069   else
7070     {
7071       /* can't drop here */
7072       remove_open_timeout (tree_view);
7073
7074       gtk_tree_view_set_drag_dest_row (GTK_TREE_VIEW (widget),
7075                                        NULL,
7076                                        GTK_TREE_VIEW_DROP_BEFORE);
7077     }
7078
7079   if (path)
7080     gtk_tree_path_free (path);
7081
7082   return TRUE;
7083 }
7084
7085 static GtkTreePath*
7086 get_logical_dest_row (GtkTreeView *tree_view,
7087                       gboolean    *path_down_mode,
7088                       gboolean    *drop_append_mode)
7089 {
7090   /* adjust path to point to the row the drop goes in front of */
7091   GtkTreePath *path = NULL;
7092   GtkTreeViewDropPosition pos;
7093
7094   g_return_val_if_fail (path_down_mode != NULL, NULL);
7095   g_return_val_if_fail (drop_append_mode != NULL, NULL);
7096
7097   *path_down_mode = FALSE;
7098   *drop_append_mode = 0;
7099
7100   gtk_tree_view_get_drag_dest_row (tree_view, &path, &pos);
7101
7102   if (path == NULL)
7103     return NULL;
7104
7105   if (pos == GTK_TREE_VIEW_DROP_BEFORE)
7106     ; /* do nothing */
7107   else if (pos == GTK_TREE_VIEW_DROP_INTO_OR_BEFORE ||
7108            pos == GTK_TREE_VIEW_DROP_INTO_OR_AFTER)
7109     *path_down_mode = TRUE;
7110   else
7111     {
7112       GtkTreeIter iter;
7113       GtkTreeModel *model = gtk_tree_view_get_model (tree_view);
7114
7115       g_assert (pos == GTK_TREE_VIEW_DROP_AFTER);
7116
7117       if (!gtk_tree_model_get_iter (model, &iter, path) ||
7118           !gtk_tree_model_iter_next (model, &iter))
7119         *drop_append_mode = 1;
7120       else
7121         {
7122           *drop_append_mode = 0;
7123           gtk_tree_path_next (path);
7124         }
7125     }
7126
7127   return path;
7128 }
7129
7130 static gboolean
7131 gtk_tree_view_maybe_begin_dragging_row (GtkTreeView      *tree_view,
7132                                         GdkEventMotion   *event)
7133 {
7134   GtkWidget *widget = GTK_WIDGET (tree_view);
7135   GdkDragContext *context;
7136   TreeViewDragInfo *di;
7137   GtkTreePath *path = NULL;
7138   gint button;
7139   gint cell_x, cell_y;
7140   GtkTreeModel *model;
7141   gboolean retval = FALSE;
7142
7143   di = get_info (tree_view);
7144
7145   if (di == NULL || !di->source_set)
7146     goto out;
7147
7148   if (tree_view->priv->pressed_button < 0)
7149     goto out;
7150
7151   if (!gtk_drag_check_threshold (widget,
7152                                  tree_view->priv->press_start_x,
7153                                  tree_view->priv->press_start_y,
7154                                  event->x, event->y))
7155     goto out;
7156
7157   model = gtk_tree_view_get_model (tree_view);
7158
7159   if (model == NULL)
7160     goto out;
7161
7162   button = tree_view->priv->pressed_button;
7163   tree_view->priv->pressed_button = -1;
7164
7165   gtk_tree_view_get_path_at_pos (tree_view,
7166                                  tree_view->priv->press_start_x,
7167                                  tree_view->priv->press_start_y,
7168                                  &path,
7169                                  NULL,
7170                                  &cell_x,
7171                                  &cell_y);
7172
7173   if (path == NULL)
7174     goto out;
7175
7176   if (!GTK_IS_TREE_DRAG_SOURCE (model) ||
7177       !gtk_tree_drag_source_row_draggable (GTK_TREE_DRAG_SOURCE (model),
7178                                            path))
7179     goto out;
7180
7181   if (!(GDK_BUTTON1_MASK << (button - 1) & di->start_button_mask))
7182     goto out;
7183
7184   /* Now we can begin the drag */
7185
7186   retval = TRUE;
7187
7188   context = gtk_drag_begin (widget,
7189                             gtk_drag_source_get_target_list (widget),
7190                             di->source_actions,
7191                             button,
7192                             (GdkEvent*)event);
7193
7194   set_source_row (context, model, path);
7195
7196  out:
7197   if (path)
7198     gtk_tree_path_free (path);
7199
7200   return retval;
7201 }
7202
7203
7204 static void
7205 gtk_tree_view_drag_begin (GtkWidget      *widget,
7206                           GdkDragContext *context)
7207 {
7208   GtkTreeView *tree_view;
7209   GtkTreePath *path = NULL;
7210   gint cell_x, cell_y;
7211   GdkPixmap *row_pix;
7212   TreeViewDragInfo *di;
7213
7214   tree_view = GTK_TREE_VIEW (widget);
7215
7216   /* if the user uses a custom DND source impl, we don't set the icon here */
7217   di = get_info (tree_view);
7218
7219   if (di == NULL || !di->source_set)
7220     return;
7221
7222   gtk_tree_view_get_path_at_pos (tree_view,
7223                                  tree_view->priv->press_start_x,
7224                                  tree_view->priv->press_start_y,
7225                                  &path,
7226                                  NULL,
7227                                  &cell_x,
7228                                  &cell_y);
7229
7230   g_return_if_fail (path != NULL);
7231
7232   row_pix = gtk_tree_view_create_row_drag_icon (tree_view,
7233                                                 path);
7234
7235   gtk_drag_set_icon_pixmap (context,
7236                             gdk_drawable_get_colormap (row_pix),
7237                             row_pix,
7238                             NULL,
7239                             /* the + 1 is for the black border in the icon */
7240                             tree_view->priv->press_start_x + 1,
7241                             cell_y + 1);
7242
7243   g_object_unref (row_pix);
7244   gtk_tree_path_free (path);
7245 }
7246
7247 static void
7248 gtk_tree_view_drag_end (GtkWidget      *widget,
7249                         GdkDragContext *context)
7250 {
7251   /* do nothing */
7252 }
7253
7254 /* Default signal implementations for the drag signals */
7255 static void
7256 gtk_tree_view_drag_data_get (GtkWidget        *widget,
7257                              GdkDragContext   *context,
7258                              GtkSelectionData *selection_data,
7259                              guint             info,
7260                              guint             time)
7261 {
7262   GtkTreeView *tree_view;
7263   GtkTreeModel *model;
7264   TreeViewDragInfo *di;
7265   GtkTreePath *source_row;
7266
7267   tree_view = GTK_TREE_VIEW (widget);
7268
7269   model = gtk_tree_view_get_model (tree_view);
7270
7271   if (model == NULL)
7272     return;
7273
7274   di = get_info (GTK_TREE_VIEW (widget));
7275
7276   if (di == NULL)
7277     return;
7278
7279   source_row = get_source_row (context);
7280
7281   if (source_row == NULL)
7282     return;
7283
7284   /* We can implement the GTK_TREE_MODEL_ROW target generically for
7285    * any model; for DragSource models there are some other targets
7286    * we also support.
7287    */
7288
7289   if (GTK_IS_TREE_DRAG_SOURCE (model) &&
7290       gtk_tree_drag_source_drag_data_get (GTK_TREE_DRAG_SOURCE (model),
7291                                           source_row,
7292                                           selection_data))
7293     goto done;
7294
7295   /* If drag_data_get does nothing, try providing row data. */
7296   if (selection_data->target == gdk_atom_intern_static_string ("GTK_TREE_MODEL_ROW"))
7297     {
7298       gtk_tree_set_row_drag_data (selection_data,
7299                                   model,
7300                                   source_row);
7301     }
7302
7303  done:
7304   gtk_tree_path_free (source_row);
7305 }
7306
7307
7308 static void
7309 gtk_tree_view_drag_data_delete (GtkWidget      *widget,
7310                                 GdkDragContext *context)
7311 {
7312   TreeViewDragInfo *di;
7313   GtkTreeModel *model;
7314   GtkTreeView *tree_view;
7315   GtkTreePath *source_row;
7316
7317   tree_view = GTK_TREE_VIEW (widget);
7318   model = gtk_tree_view_get_model (tree_view);
7319
7320   if (!check_model_dnd (model, GTK_TYPE_TREE_DRAG_SOURCE, "drag_data_delete"))
7321     return;
7322
7323   di = get_info (tree_view);
7324
7325   if (di == NULL)
7326     return;
7327
7328   source_row = get_source_row (context);
7329
7330   if (source_row == NULL)
7331     return;
7332
7333   gtk_tree_drag_source_drag_data_delete (GTK_TREE_DRAG_SOURCE (model),
7334                                          source_row);
7335
7336   gtk_tree_path_free (source_row);
7337
7338   set_source_row (context, NULL, NULL);
7339 }
7340
7341 static void
7342 gtk_tree_view_drag_leave (GtkWidget      *widget,
7343                           GdkDragContext *context,
7344                           guint             time)
7345 {
7346   /* unset any highlight row */
7347   gtk_tree_view_set_drag_dest_row (GTK_TREE_VIEW (widget),
7348                                    NULL,
7349                                    GTK_TREE_VIEW_DROP_BEFORE);
7350
7351   remove_scroll_timeout (GTK_TREE_VIEW (widget));
7352   remove_open_timeout (GTK_TREE_VIEW (widget));
7353 }
7354
7355
7356 static gboolean
7357 gtk_tree_view_drag_motion (GtkWidget        *widget,
7358                            GdkDragContext   *context,
7359                            /* coordinates relative to the widget */
7360                            gint              x,
7361                            gint              y,
7362                            guint             time)
7363 {
7364   gboolean empty;
7365   GtkTreePath *path = NULL;
7366   GtkTreeViewDropPosition pos;
7367   GtkTreeView *tree_view;
7368   GdkDragAction suggested_action = 0;
7369   GdkAtom target;
7370
7371   tree_view = GTK_TREE_VIEW (widget);
7372
7373   if (!set_destination_row (tree_view, context, x, y, &suggested_action, &target))
7374     return FALSE;
7375
7376   gtk_tree_view_get_drag_dest_row (tree_view, &path, &pos);
7377
7378   /* we only know this *after* set_desination_row */
7379   empty = tree_view->priv->empty_view_drop;
7380
7381   if (path == NULL && !empty)
7382     {
7383       /* Can't drop here. */
7384       gdk_drag_status (context, 0, time);
7385     }
7386   else
7387     {
7388       if (tree_view->priv->open_dest_timeout == 0 &&
7389           (pos == GTK_TREE_VIEW_DROP_INTO_OR_AFTER ||
7390            pos == GTK_TREE_VIEW_DROP_INTO_OR_BEFORE))
7391         {
7392           tree_view->priv->open_dest_timeout =
7393             gdk_threads_add_timeout (AUTO_EXPAND_TIMEOUT, open_row_timeout, tree_view);
7394         }
7395       else
7396         {
7397           add_scroll_timeout (tree_view);
7398         }
7399
7400       if (target == gdk_atom_intern_static_string ("GTK_TREE_MODEL_ROW"))
7401         {
7402           /* Request data so we can use the source row when
7403            * determining whether to accept the drop
7404            */
7405           set_status_pending (context, suggested_action);
7406           gtk_drag_get_data (widget, context, target, time);
7407         }
7408       else
7409         {
7410           set_status_pending (context, 0);
7411           gdk_drag_status (context, suggested_action, time);
7412         }
7413     }
7414
7415   if (path)
7416     gtk_tree_path_free (path);
7417
7418   return TRUE;
7419 }
7420
7421
7422 static gboolean
7423 gtk_tree_view_drag_drop (GtkWidget        *widget,
7424                          GdkDragContext   *context,
7425                          /* coordinates relative to the widget */
7426                          gint              x,
7427                          gint              y,
7428                          guint             time)
7429 {
7430   GtkTreeView *tree_view;
7431   GtkTreePath *path;
7432   GdkDragAction suggested_action = 0;
7433   GdkAtom target = GDK_NONE;
7434   TreeViewDragInfo *di;
7435   GtkTreeModel *model;
7436   gboolean path_down_mode;
7437   gboolean drop_append_mode;
7438
7439   tree_view = GTK_TREE_VIEW (widget);
7440
7441   model = gtk_tree_view_get_model (tree_view);
7442
7443   remove_scroll_timeout (GTK_TREE_VIEW (widget));
7444   remove_open_timeout (GTK_TREE_VIEW (widget));
7445
7446   di = get_info (tree_view);
7447
7448   if (di == NULL)
7449     return FALSE;
7450
7451   if (!check_model_dnd (model, GTK_TYPE_TREE_DRAG_DEST, "drag_drop"))
7452     return FALSE;
7453
7454   if (!set_destination_row (tree_view, context, x, y, &suggested_action, &target))
7455     return FALSE;
7456
7457   path = get_logical_dest_row (tree_view, &path_down_mode, &drop_append_mode);
7458
7459   if (target != GDK_NONE && path != NULL)
7460     {
7461       /* in case a motion had requested drag data, change things so we
7462        * treat drag data receives as a drop.
7463        */
7464       set_status_pending (context, 0);
7465       set_dest_row (context, model, path,
7466                     path_down_mode, tree_view->priv->empty_view_drop,
7467                     drop_append_mode);
7468     }
7469
7470   if (path)
7471     gtk_tree_path_free (path);
7472
7473   /* Unset this thing */
7474   gtk_tree_view_set_drag_dest_row (GTK_TREE_VIEW (widget),
7475                                    NULL,
7476                                    GTK_TREE_VIEW_DROP_BEFORE);
7477
7478   if (target != GDK_NONE)
7479     {
7480       gtk_drag_get_data (widget, context, target, time);
7481       return TRUE;
7482     }
7483   else
7484     return FALSE;
7485 }
7486
7487 static void
7488 gtk_tree_view_drag_data_received (GtkWidget        *widget,
7489                                   GdkDragContext   *context,
7490                                   /* coordinates relative to the widget */
7491                                   gint              x,
7492                                   gint              y,
7493                                   GtkSelectionData *selection_data,
7494                                   guint             info,
7495                                   guint             time)
7496 {
7497   GtkTreePath *path;
7498   TreeViewDragInfo *di;
7499   gboolean accepted = FALSE;
7500   GtkTreeModel *model;
7501   GtkTreeView *tree_view;
7502   GtkTreePath *dest_row;
7503   GdkDragAction suggested_action;
7504   gboolean path_down_mode;
7505   gboolean drop_append_mode;
7506
7507   tree_view = GTK_TREE_VIEW (widget);
7508
7509   model = gtk_tree_view_get_model (tree_view);
7510
7511   if (!check_model_dnd (model, GTK_TYPE_TREE_DRAG_DEST, "drag_data_received"))
7512     return;
7513
7514   di = get_info (tree_view);
7515
7516   if (di == NULL)
7517     return;
7518
7519   suggested_action = get_status_pending (context);
7520
7521   if (suggested_action)
7522     {
7523       /* We are getting this data due to a request in drag_motion,
7524        * rather than due to a request in drag_drop, so we are just
7525        * supposed to call drag_status, not actually paste in the
7526        * data.
7527        */
7528       path = get_logical_dest_row (tree_view, &path_down_mode,
7529                                    &drop_append_mode);
7530
7531       if (path == NULL)
7532         suggested_action = 0;
7533       else if (path_down_mode)
7534         gtk_tree_path_down (path);
7535
7536       if (suggested_action)
7537         {
7538           if (!gtk_tree_drag_dest_row_drop_possible (GTK_TREE_DRAG_DEST (model),
7539                                                      path,
7540                                                      selection_data))
7541             {
7542               if (path_down_mode)
7543                 {
7544                   path_down_mode = FALSE;
7545                   gtk_tree_path_up (path);
7546
7547                   if (!gtk_tree_drag_dest_row_drop_possible (GTK_TREE_DRAG_DEST (model),
7548                                                              path,
7549                                                              selection_data))
7550                     suggested_action = 0;
7551                 }
7552               else
7553                 suggested_action = 0;
7554             }
7555         }
7556
7557       gdk_drag_status (context, suggested_action, time);
7558
7559       if (path)
7560         gtk_tree_path_free (path);
7561
7562       /* If you can't drop, remove user drop indicator until the next motion */
7563       if (suggested_action == 0)
7564         gtk_tree_view_set_drag_dest_row (GTK_TREE_VIEW (widget),
7565                                          NULL,
7566                                          GTK_TREE_VIEW_DROP_BEFORE);
7567
7568       return;
7569     }
7570
7571   dest_row = get_dest_row (context, &path_down_mode);
7572
7573   if (dest_row == NULL)
7574     return;
7575
7576   if (selection_data->length >= 0)
7577     {
7578       if (path_down_mode)
7579         {
7580           gtk_tree_path_down (dest_row);
7581           if (!gtk_tree_drag_dest_row_drop_possible (GTK_TREE_DRAG_DEST (model),
7582                                                      dest_row, selection_data))
7583             gtk_tree_path_up (dest_row);
7584         }
7585     }
7586
7587   if (selection_data->length >= 0)
7588     {
7589       if (gtk_tree_drag_dest_drag_data_received (GTK_TREE_DRAG_DEST (model),
7590                                                  dest_row,
7591                                                  selection_data))
7592         accepted = TRUE;
7593     }
7594
7595   gtk_drag_finish (context,
7596                    accepted,
7597                    (context->action == GDK_ACTION_MOVE),
7598                    time);
7599
7600   if (gtk_tree_path_get_depth (dest_row) == 1
7601       && gtk_tree_path_get_indices (dest_row)[0] == 0)
7602     {
7603       /* special special case drag to "0", scroll to first item */
7604       if (!tree_view->priv->scroll_to_path)
7605         gtk_tree_view_scroll_to_cell (tree_view, dest_row, NULL, FALSE, 0.0, 0.0);
7606     }
7607
7608   gtk_tree_path_free (dest_row);
7609
7610   /* drop dest_row */
7611   set_dest_row (context, NULL, NULL, FALSE, FALSE, FALSE);
7612 }
7613
7614
7615
7616 /* GtkContainer Methods
7617  */
7618
7619
7620 static void
7621 gtk_tree_view_remove (GtkContainer *container,
7622                       GtkWidget    *widget)
7623 {
7624   GtkTreeView *tree_view = GTK_TREE_VIEW (container);
7625   GtkTreeViewChild *child = NULL;
7626   GList *tmp_list;
7627
7628   tmp_list = tree_view->priv->children;
7629   while (tmp_list)
7630     {
7631       child = tmp_list->data;
7632       if (child->widget == widget)
7633         {
7634           gtk_widget_unparent (widget);
7635
7636           tree_view->priv->children = g_list_remove_link (tree_view->priv->children, tmp_list);
7637           g_list_free_1 (tmp_list);
7638           g_slice_free (GtkTreeViewChild, child);
7639           return;
7640         }
7641
7642       tmp_list = tmp_list->next;
7643     }
7644
7645   tmp_list = tree_view->priv->columns;
7646
7647   while (tmp_list)
7648     {
7649       GtkTreeViewColumn *column;
7650       column = tmp_list->data;
7651       if (column->button == widget)
7652         {
7653           gtk_widget_unparent (widget);
7654           return;
7655         }
7656       tmp_list = tmp_list->next;
7657     }
7658 }
7659
7660 static void
7661 gtk_tree_view_forall (GtkContainer *container,
7662                       gboolean      include_internals,
7663                       GtkCallback   callback,
7664                       gpointer      callback_data)
7665 {
7666   GtkTreeView *tree_view = GTK_TREE_VIEW (container);
7667   GtkTreeViewChild *child = NULL;
7668   GtkTreeViewColumn *column;
7669   GList *tmp_list;
7670
7671   tmp_list = tree_view->priv->children;
7672   while (tmp_list)
7673     {
7674       child = tmp_list->data;
7675       tmp_list = tmp_list->next;
7676
7677       (* callback) (child->widget, callback_data);
7678     }
7679   if (include_internals == FALSE)
7680     return;
7681
7682   for (tmp_list = tree_view->priv->columns; tmp_list; tmp_list = tmp_list->next)
7683     {
7684       column = tmp_list->data;
7685
7686       if (column->button)
7687         (* callback) (column->button, callback_data);
7688     }
7689 }
7690
7691 /* Returns TRUE if the treeview contains no "special" (editable or activatable)
7692  * cells. If so we draw one big row-spanning focus rectangle.
7693  */
7694 static gboolean
7695 gtk_tree_view_has_special_cell (GtkTreeView *tree_view)
7696 {
7697   GList *list;
7698
7699   for (list = tree_view->priv->columns; list; list = list->next)
7700     {
7701       if (!((GtkTreeViewColumn *)list->data)->visible)
7702         continue;
7703       if (_gtk_tree_view_column_count_special_cells (list->data))
7704         return TRUE;
7705     }
7706
7707   return FALSE;
7708 }
7709
7710 static void
7711 column_sizing_notify (GObject    *object,
7712                       GParamSpec *pspec,
7713                       gpointer    data)
7714 {
7715   GtkTreeViewColumn *c = GTK_TREE_VIEW_COLUMN (object);
7716
7717   if (gtk_tree_view_column_get_sizing (c) != GTK_TREE_VIEW_COLUMN_FIXED)
7718     /* disable fixed height mode */
7719     g_object_set (data, "fixed-height-mode", FALSE, NULL);
7720 }
7721
7722 /**
7723  * gtk_tree_view_set_fixed_height_mode:
7724  * @tree_view: a #GtkTreeView
7725  * @enable: %TRUE to enable fixed height mode
7726  *
7727  * Enables or disables the fixed height mode of @tree_view.
7728  * Fixed height mode speeds up #GtkTreeView by assuming that all
7729  * rows have the same height.
7730  * Only enable this option if all rows are the same height and all
7731  * columns are of type %GTK_TREE_VIEW_COLUMN_FIXED.
7732  *
7733  * Since: 2.6
7734  **/
7735 void
7736 gtk_tree_view_set_fixed_height_mode (GtkTreeView *tree_view,
7737                                      gboolean     enable)
7738 {
7739   GList *l;
7740
7741   enable = enable != FALSE;
7742
7743   if (enable == tree_view->priv->fixed_height_mode)
7744     return;
7745
7746   if (!enable)
7747     {
7748       tree_view->priv->fixed_height_mode = 0;
7749       tree_view->priv->fixed_height = -1;
7750
7751       /* force a revalidation */
7752       install_presize_handler (tree_view);
7753     }
7754   else
7755     {
7756       /* make sure all columns are of type FIXED */
7757       for (l = tree_view->priv->columns; l; l = l->next)
7758         {
7759           GtkTreeViewColumn *c = l->data;
7760
7761           g_return_if_fail (gtk_tree_view_column_get_sizing (c) == GTK_TREE_VIEW_COLUMN_FIXED);
7762         }
7763
7764       /* yes, we really have to do this is in a separate loop */
7765       for (l = tree_view->priv->columns; l; l = l->next)
7766         g_signal_connect (l->data, "notify::sizing",
7767                           G_CALLBACK (column_sizing_notify), tree_view);
7768
7769       tree_view->priv->fixed_height_mode = 1;
7770       tree_view->priv->fixed_height = -1;
7771
7772       if (tree_view->priv->tree)
7773         initialize_fixed_height_mode (tree_view);
7774     }
7775
7776   g_object_notify (G_OBJECT (tree_view), "fixed-height-mode");
7777 }
7778
7779 /**
7780  * gtk_tree_view_get_fixed_height_mode:
7781  * @tree_view: a #GtkTreeView
7782  *
7783  * Returns whether fixed height mode is turned on for @tree_view.
7784  *
7785  * Return value: %TRUE if @tree_view is in fixed height mode
7786  *
7787  * Since: 2.6
7788  **/
7789 gboolean
7790 gtk_tree_view_get_fixed_height_mode (GtkTreeView *tree_view)
7791 {
7792   return tree_view->priv->fixed_height_mode;
7793 }
7794
7795 /* Returns TRUE if the focus is within the headers, after the focus operation is
7796  * done
7797  */
7798 static gboolean
7799 gtk_tree_view_header_focus (GtkTreeView      *tree_view,
7800                             GtkDirectionType  dir,
7801                             gboolean          clamp_column_visible)
7802 {
7803   GtkWidget *focus_child;
7804
7805   GList *last_column, *first_column;
7806   GList *tmp_list;
7807   gboolean rtl;
7808
7809   if (! GTK_TREE_VIEW_FLAG_SET (tree_view, GTK_TREE_VIEW_HEADERS_VISIBLE))
7810     return FALSE;
7811
7812   focus_child = GTK_CONTAINER (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_get_realized (widget))
8065     {
8066       gdk_window_set_back_pixmap (widget->window, NULL, FALSE);
8067       gdk_window_set_background (tree_view->priv->bin_window, &widget->style->base[widget->state]);
8068       gtk_style_set_background (widget->style, tree_view->priv->header_window, GTK_STATE_NORMAL);
8069
8070       gtk_tree_view_set_grid_lines (tree_view, tree_view->priv->grid_lines);
8071       gtk_tree_view_set_enable_tree_lines (tree_view, tree_view->priv->tree_lines_enabled);
8072     }
8073
8074   gtk_widget_style_get (widget,
8075                         "expander-size", &tree_view->priv->expander_size,
8076                         NULL);
8077   tree_view->priv->expander_size += EXPANDER_EXTRA_PADDING;
8078
8079   for (list = tree_view->priv->columns; list; list = list->next)
8080     {
8081       column = list->data;
8082       _gtk_tree_view_column_cell_set_dirty (column, TRUE);
8083     }
8084
8085   tree_view->priv->fixed_height = -1;
8086   _gtk_rbtree_mark_invalid (tree_view->priv->tree);
8087
8088   gtk_widget_queue_resize (widget);
8089 }
8090
8091
8092 static void
8093 gtk_tree_view_set_focus_child (GtkContainer *container,
8094                                GtkWidget    *child)
8095 {
8096   GtkTreeView *tree_view = GTK_TREE_VIEW (container);
8097   GList *list;
8098
8099   for (list = tree_view->priv->columns; list; list = list->next)
8100     {
8101       if (GTK_TREE_VIEW_COLUMN (list->data)->button == child)
8102         {
8103           tree_view->priv->focus_column = GTK_TREE_VIEW_COLUMN (list->data);
8104           break;
8105         }
8106     }
8107
8108   GTK_CONTAINER_CLASS (gtk_tree_view_parent_class)->set_focus_child (container, child);
8109 }
8110
8111 static void
8112 gtk_tree_view_set_adjustments (GtkTreeView   *tree_view,
8113                                GtkAdjustment *hadj,
8114                                GtkAdjustment *vadj)
8115 {
8116   gboolean need_adjust = FALSE;
8117
8118   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
8119
8120   if (hadj)
8121     g_return_if_fail (GTK_IS_ADJUSTMENT (hadj));
8122   else
8123     hadj = GTK_ADJUSTMENT (gtk_adjustment_new (0.0, 0.0, 0.0, 0.0, 0.0, 0.0));
8124   if (vadj)
8125     g_return_if_fail (GTK_IS_ADJUSTMENT (vadj));
8126   else
8127     vadj = GTK_ADJUSTMENT (gtk_adjustment_new (0.0, 0.0, 0.0, 0.0, 0.0, 0.0));
8128
8129   if (tree_view->priv->hadjustment && (tree_view->priv->hadjustment != hadj))
8130     {
8131       g_signal_handlers_disconnect_by_func (tree_view->priv->hadjustment,
8132                                             gtk_tree_view_adjustment_changed,
8133                                             tree_view);
8134       g_object_unref (tree_view->priv->hadjustment);
8135     }
8136
8137   if (tree_view->priv->vadjustment && (tree_view->priv->vadjustment != vadj))
8138     {
8139       g_signal_handlers_disconnect_by_func (tree_view->priv->vadjustment,
8140                                             gtk_tree_view_adjustment_changed,
8141                                             tree_view);
8142       g_object_unref (tree_view->priv->vadjustment);
8143     }
8144
8145   if (tree_view->priv->hadjustment != hadj)
8146     {
8147       tree_view->priv->hadjustment = hadj;
8148       g_object_ref_sink (tree_view->priv->hadjustment);
8149
8150       g_signal_connect (tree_view->priv->hadjustment, "value-changed",
8151                         G_CALLBACK (gtk_tree_view_adjustment_changed),
8152                         tree_view);
8153       need_adjust = TRUE;
8154     }
8155
8156   if (tree_view->priv->vadjustment != vadj)
8157     {
8158       tree_view->priv->vadjustment = vadj;
8159       g_object_ref_sink (tree_view->priv->vadjustment);
8160
8161       g_signal_connect (tree_view->priv->vadjustment, "value-changed",
8162                         G_CALLBACK (gtk_tree_view_adjustment_changed),
8163                         tree_view);
8164       need_adjust = TRUE;
8165     }
8166
8167   if (need_adjust)
8168     gtk_tree_view_adjustment_changed (NULL, tree_view);
8169 }
8170
8171
8172 static gboolean
8173 gtk_tree_view_real_move_cursor (GtkTreeView       *tree_view,
8174                                 GtkMovementStep    step,
8175                                 gint               count)
8176 {
8177   GdkModifierType state;
8178
8179   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), FALSE);
8180   g_return_val_if_fail (step == GTK_MOVEMENT_LOGICAL_POSITIONS ||
8181                         step == GTK_MOVEMENT_VISUAL_POSITIONS ||
8182                         step == GTK_MOVEMENT_DISPLAY_LINES ||
8183                         step == GTK_MOVEMENT_PAGES ||
8184                         step == GTK_MOVEMENT_BUFFER_ENDS, FALSE);
8185
8186   if (tree_view->priv->tree == NULL)
8187     return FALSE;
8188   if (!gtk_widget_has_focus (GTK_WIDGET (tree_view)))
8189     return FALSE;
8190
8191   gtk_tree_view_stop_editing (tree_view, FALSE);
8192   GTK_TREE_VIEW_SET_FLAG (tree_view, GTK_TREE_VIEW_DRAW_KEYFOCUS);
8193   gtk_widget_grab_focus (GTK_WIDGET (tree_view));
8194
8195   if (gtk_get_current_event_state (&state))
8196     {
8197       if ((state & GDK_CONTROL_MASK) == GDK_CONTROL_MASK)
8198         tree_view->priv->ctrl_pressed = TRUE;
8199       if ((state & GDK_SHIFT_MASK) == GDK_SHIFT_MASK)
8200         tree_view->priv->shift_pressed = TRUE;
8201     }
8202   /* else we assume not pressed */
8203
8204   switch (step)
8205     {
8206       /* currently we make no distinction.  When we go bi-di, we need to */
8207     case GTK_MOVEMENT_LOGICAL_POSITIONS:
8208     case GTK_MOVEMENT_VISUAL_POSITIONS:
8209       gtk_tree_view_move_cursor_left_right (tree_view, count);
8210       break;
8211     case GTK_MOVEMENT_DISPLAY_LINES:
8212       gtk_tree_view_move_cursor_up_down (tree_view, count);
8213       break;
8214     case GTK_MOVEMENT_PAGES:
8215       gtk_tree_view_move_cursor_page_up_down (tree_view, count);
8216       break;
8217     case GTK_MOVEMENT_BUFFER_ENDS:
8218       gtk_tree_view_move_cursor_start_end (tree_view, count);
8219       break;
8220     default:
8221       g_assert_not_reached ();
8222     }
8223
8224   tree_view->priv->ctrl_pressed = FALSE;
8225   tree_view->priv->shift_pressed = FALSE;
8226
8227   return TRUE;
8228 }
8229
8230 static void
8231 gtk_tree_view_put (GtkTreeView *tree_view,
8232                    GtkWidget   *child_widget,
8233                    /* in bin_window coordinates */
8234                    gint         x,
8235                    gint         y,
8236                    gint         width,
8237                    gint         height)
8238 {
8239   GtkTreeViewChild *child;
8240
8241   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
8242   g_return_if_fail (GTK_IS_WIDGET (child_widget));
8243
8244   child = g_slice_new (GtkTreeViewChild);
8245
8246   child->widget = child_widget;
8247   child->x = x;
8248   child->y = y;
8249   child->width = width;
8250   child->height = height;
8251
8252   tree_view->priv->children = g_list_append (tree_view->priv->children, child);
8253
8254   if (gtk_widget_get_realized (GTK_WIDGET (tree_view)))
8255     gtk_widget_set_parent_window (child->widget, tree_view->priv->bin_window);
8256
8257   gtk_widget_set_parent (child_widget, GTK_WIDGET (tree_view));
8258 }
8259
8260 void
8261 _gtk_tree_view_child_move_resize (GtkTreeView *tree_view,
8262                                   GtkWidget   *widget,
8263                                   /* in tree coordinates */
8264                                   gint         x,
8265                                   gint         y,
8266                                   gint         width,
8267                                   gint         height)
8268 {
8269   GtkTreeViewChild *child = NULL;
8270   GList *list;
8271   GdkRectangle allocation;
8272
8273   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
8274   g_return_if_fail (GTK_IS_WIDGET (widget));
8275
8276   for (list = tree_view->priv->children; list; list = list->next)
8277     {
8278       if (((GtkTreeViewChild *)list->data)->widget == widget)
8279         {
8280           child = list->data;
8281           break;
8282         }
8283     }
8284   if (child == NULL)
8285     return;
8286
8287   allocation.x = child->x = x;
8288   allocation.y = child->y = y;
8289   allocation.width = child->width = width;
8290   allocation.height = child->height = height;
8291
8292   if (gtk_widget_get_realized (widget))
8293     gtk_widget_size_allocate (widget, &allocation);
8294 }
8295
8296
8297 /* TreeModel Callbacks
8298  */
8299
8300 static void
8301 gtk_tree_view_row_changed (GtkTreeModel *model,
8302                            GtkTreePath  *path,
8303                            GtkTreeIter  *iter,
8304                            gpointer      data)
8305 {
8306   GtkTreeView *tree_view = (GtkTreeView *)data;
8307   GtkRBTree *tree;
8308   GtkRBNode *node;
8309   gboolean free_path = FALSE;
8310   GList *list;
8311   GtkTreePath *cursor_path;
8312
8313   g_return_if_fail (path != NULL || iter != NULL);
8314
8315   if (tree_view->priv->cursor != NULL)
8316     cursor_path = gtk_tree_row_reference_get_path (tree_view->priv->cursor);
8317   else
8318     cursor_path = NULL;
8319
8320   if (tree_view->priv->edited_column &&
8321       (cursor_path == NULL || gtk_tree_path_compare (cursor_path, path) == 0))
8322     gtk_tree_view_stop_editing (tree_view, TRUE);
8323
8324   if (cursor_path != NULL)
8325     gtk_tree_path_free (cursor_path);
8326
8327   if (path == NULL)
8328     {
8329       path = gtk_tree_model_get_path (model, iter);
8330       free_path = TRUE;
8331     }
8332   else if (iter == NULL)
8333     gtk_tree_model_get_iter (model, iter, path);
8334
8335   if (_gtk_tree_view_find_node (tree_view,
8336                                 path,
8337                                 &tree,
8338                                 &node))
8339     /* We aren't actually showing the node */
8340     goto done;
8341
8342   if (tree == NULL)
8343     goto done;
8344
8345   if (tree_view->priv->fixed_height_mode
8346       && tree_view->priv->fixed_height >= 0)
8347     {
8348       _gtk_rbtree_node_set_height (tree, node, tree_view->priv->fixed_height);
8349       if (gtk_widget_get_realized (GTK_WIDGET (tree_view)))
8350         gtk_tree_view_node_queue_redraw (tree_view, tree, node);
8351     }
8352   else
8353     {
8354       _gtk_rbtree_node_mark_invalid (tree, node);
8355       for (list = tree_view->priv->columns; list; list = list->next)
8356         {
8357           GtkTreeViewColumn *column;
8358
8359           column = list->data;
8360           if (! column->visible)
8361             continue;
8362
8363           if (column->column_type == GTK_TREE_VIEW_COLUMN_AUTOSIZE)
8364             {
8365               _gtk_tree_view_column_cell_set_dirty (column, TRUE);
8366             }
8367         }
8368     }
8369
8370  done:
8371   if (!tree_view->priv->fixed_height_mode &&
8372       gtk_widget_get_realized (GTK_WIDGET (tree_view)))
8373     install_presize_handler (tree_view);
8374   if (free_path)
8375     gtk_tree_path_free (path);
8376 }
8377
8378 static void
8379 gtk_tree_view_row_inserted (GtkTreeModel *model,
8380                             GtkTreePath  *path,
8381                             GtkTreeIter  *iter,
8382                             gpointer      data)
8383 {
8384   GtkTreeView *tree_view = (GtkTreeView *) data;
8385   gint *indices;
8386   GtkRBTree *tmptree, *tree;
8387   GtkRBNode *tmpnode = NULL;
8388   gint depth;
8389   gint i = 0;
8390   gint height;
8391   gboolean free_path = FALSE;
8392   gboolean node_visible = TRUE;
8393
8394   g_return_if_fail (path != NULL || iter != NULL);
8395
8396   if (tree_view->priv->fixed_height_mode
8397       && tree_view->priv->fixed_height >= 0)
8398     height = tree_view->priv->fixed_height;
8399   else
8400     height = 0;
8401
8402   if (path == NULL)
8403     {
8404       path = gtk_tree_model_get_path (model, iter);
8405       free_path = TRUE;
8406     }
8407   else if (iter == NULL)
8408     gtk_tree_model_get_iter (model, iter, path);
8409
8410   if (tree_view->priv->tree == NULL)
8411     tree_view->priv->tree = _gtk_rbtree_new ();
8412
8413   tmptree = tree = tree_view->priv->tree;
8414
8415   /* Update all row-references */
8416   gtk_tree_row_reference_inserted (G_OBJECT (data), path);
8417   depth = gtk_tree_path_get_depth (path);
8418   indices = gtk_tree_path_get_indices (path);
8419
8420   /* First, find the parent tree */
8421   while (i < depth - 1)
8422     {
8423       if (tmptree == NULL)
8424         {
8425           /* We aren't showing the node */
8426           node_visible = FALSE;
8427           goto done;
8428         }
8429
8430       tmpnode = _gtk_rbtree_find_count (tmptree, indices[i] + 1);
8431       if (tmpnode == NULL)
8432         {
8433           g_warning ("A node was inserted with a parent that's not in the tree.\n" \
8434                      "This possibly means that a GtkTreeModel inserted a child node\n" \
8435                      "before the parent was inserted.");
8436           goto done;
8437         }
8438       else if (!GTK_RBNODE_FLAG_SET (tmpnode, GTK_RBNODE_IS_PARENT))
8439         {
8440           /* FIXME enforce correct behavior on model, probably */
8441           /* In theory, the model should have emitted has_child_toggled here.  We
8442            * try to catch it anyway, just to be safe, in case the model hasn't.
8443            */
8444           GtkTreePath *tmppath = _gtk_tree_view_find_path (tree_view,
8445                                                            tree,
8446                                                            tmpnode);
8447           gtk_tree_view_row_has_child_toggled (model, tmppath, NULL, data);
8448           gtk_tree_path_free (tmppath);
8449           goto done;
8450         }
8451
8452       tmptree = tmpnode->children;
8453       tree = tmptree;
8454       i++;
8455     }
8456
8457   if (tree == NULL)
8458     {
8459       node_visible = FALSE;
8460       goto done;
8461     }
8462
8463   /* ref the node */
8464   gtk_tree_model_ref_node (tree_view->priv->model, iter);
8465   if (indices[depth - 1] == 0)
8466     {
8467       tmpnode = _gtk_rbtree_find_count (tree, 1);
8468       tmpnode = _gtk_rbtree_insert_before (tree, tmpnode, height, FALSE);
8469     }
8470   else
8471     {
8472       tmpnode = _gtk_rbtree_find_count (tree, indices[depth - 1]);
8473       tmpnode = _gtk_rbtree_insert_after (tree, tmpnode, height, FALSE);
8474     }
8475
8476  done:
8477   if (height > 0)
8478     {
8479       if (tree)
8480         _gtk_rbtree_node_mark_valid (tree, tmpnode);
8481
8482       if (node_visible && node_is_visible (tree_view, tree, tmpnode))
8483         gtk_widget_queue_resize (GTK_WIDGET (tree_view));
8484       else
8485         gtk_widget_queue_resize_no_redraw (GTK_WIDGET (tree_view));
8486     }
8487   else
8488     install_presize_handler (tree_view);
8489   if (free_path)
8490     gtk_tree_path_free (path);
8491 }
8492
8493 static void
8494 gtk_tree_view_row_has_child_toggled (GtkTreeModel *model,
8495                                      GtkTreePath  *path,
8496                                      GtkTreeIter  *iter,
8497                                      gpointer      data)
8498 {
8499   GtkTreeView *tree_view = (GtkTreeView *)data;
8500   GtkTreeIter real_iter;
8501   gboolean has_child;
8502   GtkRBTree *tree;
8503   GtkRBNode *node;
8504   gboolean free_path = FALSE;
8505
8506   g_return_if_fail (path != NULL || iter != NULL);
8507
8508   if (iter)
8509     real_iter = *iter;
8510
8511   if (path == NULL)
8512     {
8513       path = gtk_tree_model_get_path (model, iter);
8514       free_path = TRUE;
8515     }
8516   else if (iter == NULL)
8517     gtk_tree_model_get_iter (model, &real_iter, path);
8518
8519   if (_gtk_tree_view_find_node (tree_view,
8520                                 path,
8521                                 &tree,
8522                                 &node))
8523     /* We aren't actually showing the node */
8524     goto done;
8525
8526   if (tree == NULL)
8527     goto done;
8528
8529   has_child = gtk_tree_model_iter_has_child (model, &real_iter);
8530   /* Sanity check.
8531    */
8532   if (GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_PARENT) == has_child)
8533     goto done;
8534
8535   if (has_child)
8536     GTK_RBNODE_SET_FLAG (node, GTK_RBNODE_IS_PARENT);
8537   else
8538     GTK_RBNODE_UNSET_FLAG (node, GTK_RBNODE_IS_PARENT);
8539
8540   if (has_child && GTK_TREE_VIEW_FLAG_SET (tree_view, GTK_TREE_VIEW_IS_LIST))
8541     {
8542       GTK_TREE_VIEW_UNSET_FLAG (tree_view, GTK_TREE_VIEW_IS_LIST);
8543       if (GTK_TREE_VIEW_FLAG_SET (tree_view, GTK_TREE_VIEW_SHOW_EXPANDERS))
8544         {
8545           GList *list;
8546
8547           for (list = tree_view->priv->columns; list; list = list->next)
8548             if (GTK_TREE_VIEW_COLUMN (list->data)->visible)
8549               {
8550                 GTK_TREE_VIEW_COLUMN (list->data)->dirty = TRUE;
8551                 _gtk_tree_view_column_cell_set_dirty (GTK_TREE_VIEW_COLUMN (list->data), TRUE);
8552                 break;
8553               }
8554         }
8555       gtk_widget_queue_resize (GTK_WIDGET (tree_view));
8556     }
8557   else
8558     {
8559       _gtk_tree_view_queue_draw_node (tree_view, tree, node, NULL);
8560     }
8561
8562  done:
8563   if (free_path)
8564     gtk_tree_path_free (path);
8565 }
8566
8567 static void
8568 count_children_helper (GtkRBTree *tree,
8569                        GtkRBNode *node,
8570                        gpointer   data)
8571 {
8572   if (node->children)
8573     _gtk_rbtree_traverse (node->children, node->children->root, G_POST_ORDER, count_children_helper, data);
8574   (*((gint *)data))++;
8575 }
8576
8577 static void
8578 check_selection_helper (GtkRBTree *tree,
8579                         GtkRBNode *node,
8580                         gpointer   data)
8581 {
8582   gint *value = (gint *)data;
8583
8584   *value = GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_SELECTED);
8585
8586   if (node->children && !*value)
8587     _gtk_rbtree_traverse (node->children, node->children->root, G_POST_ORDER, check_selection_helper, data);
8588 }
8589
8590 static void
8591 gtk_tree_view_row_deleted (GtkTreeModel *model,
8592                            GtkTreePath  *path,
8593                            gpointer      data)
8594 {
8595   GtkTreeView *tree_view = (GtkTreeView *)data;
8596   GtkRBTree *tree;
8597   GtkRBNode *node;
8598   GList *list;
8599   gint selection_changed = FALSE;
8600
8601   g_return_if_fail (path != NULL);
8602
8603   gtk_tree_row_reference_deleted (G_OBJECT (data), path);
8604
8605   if (_gtk_tree_view_find_node (tree_view, path, &tree, &node))
8606     return;
8607
8608   if (tree == NULL)
8609     return;
8610
8611   /* check if the selection has been changed */
8612   _gtk_rbtree_traverse (tree, node, G_POST_ORDER,
8613                         check_selection_helper, &selection_changed);
8614
8615   for (list = tree_view->priv->columns; list; list = list->next)
8616     if (((GtkTreeViewColumn *)list->data)->visible &&
8617         ((GtkTreeViewColumn *)list->data)->column_type == GTK_TREE_VIEW_COLUMN_AUTOSIZE)
8618       _gtk_tree_view_column_cell_set_dirty ((GtkTreeViewColumn *)list->data, TRUE);
8619
8620   /* Ensure we don't have a dangling pointer to a dead node */
8621   ensure_unprelighted (tree_view);
8622
8623   /* Cancel editting if we've started */
8624   gtk_tree_view_stop_editing (tree_view, TRUE);
8625
8626   /* If we have a node expanded/collapsed timeout, remove it */
8627   remove_expand_collapse_timeout (tree_view);
8628
8629   if (tree_view->priv->destroy_count_func)
8630     {
8631       gint child_count = 0;
8632       if (node->children)
8633         _gtk_rbtree_traverse (node->children, node->children->root, G_POST_ORDER, count_children_helper, &child_count);
8634       tree_view->priv->destroy_count_func (tree_view, path, child_count, tree_view->priv->destroy_count_data);
8635     }
8636
8637   if (tree->root->count == 1)
8638     {
8639       if (tree_view->priv->tree == tree)
8640         tree_view->priv->tree = NULL;
8641
8642       _gtk_rbtree_remove (tree);
8643     }
8644   else
8645     {
8646       _gtk_rbtree_remove_node (tree, node);
8647     }
8648
8649   if (! gtk_tree_row_reference_valid (tree_view->priv->top_row))
8650     {
8651       gtk_tree_row_reference_free (tree_view->priv->top_row);
8652       tree_view->priv->top_row = NULL;
8653     }
8654
8655   install_scroll_sync_handler (tree_view);
8656
8657   gtk_widget_queue_resize (GTK_WIDGET (tree_view));
8658
8659   if (selection_changed)
8660     g_signal_emit_by_name (tree_view->priv->selection, "changed");
8661 }
8662
8663 static void
8664 gtk_tree_view_rows_reordered (GtkTreeModel *model,
8665                               GtkTreePath  *parent,
8666                               GtkTreeIter  *iter,
8667                               gint         *new_order,
8668                               gpointer      data)
8669 {
8670   GtkTreeView *tree_view = GTK_TREE_VIEW (data);
8671   GtkRBTree *tree;
8672   GtkRBNode *node;
8673   gint len;
8674
8675   len = gtk_tree_model_iter_n_children (model, iter);
8676
8677   if (len < 2)
8678     return;
8679
8680   gtk_tree_row_reference_reordered (G_OBJECT (data),
8681                                     parent,
8682                                     iter,
8683                                     new_order);
8684
8685   if (_gtk_tree_view_find_node (tree_view,
8686                                 parent,
8687                                 &tree,
8688                                 &node))
8689     return;
8690
8691   /* We need to special case the parent path */
8692   if (tree == NULL)
8693     tree = tree_view->priv->tree;
8694   else
8695     tree = node->children;
8696
8697   if (tree == NULL)
8698     return;
8699
8700   if (tree_view->priv->edited_column)
8701     gtk_tree_view_stop_editing (tree_view, TRUE);
8702
8703   /* we need to be unprelighted */
8704   ensure_unprelighted (tree_view);
8705
8706   /* clear the timeout */
8707   cancel_arrow_animation (tree_view);
8708
8709   _gtk_rbtree_reorder (tree, new_order, len);
8710
8711   gtk_widget_queue_draw (GTK_WIDGET (tree_view));
8712
8713   gtk_tree_view_dy_to_top_row (tree_view);
8714 }
8715
8716
8717 /* Internal tree functions
8718  */
8719
8720
8721 static void
8722 gtk_tree_view_get_background_xrange (GtkTreeView       *tree_view,
8723                                      GtkRBTree         *tree,
8724                                      GtkTreeViewColumn *column,
8725                                      gint              *x1,
8726                                      gint              *x2)
8727 {
8728   GtkTreeViewColumn *tmp_column = NULL;
8729   gint total_width;
8730   GList *list;
8731   gboolean rtl;
8732
8733   if (x1)
8734     *x1 = 0;
8735
8736   if (x2)
8737     *x2 = 0;
8738
8739   rtl = (gtk_widget_get_direction (GTK_WIDGET (tree_view)) == GTK_TEXT_DIR_RTL);
8740
8741   total_width = 0;
8742   for (list = (rtl ? g_list_last (tree_view->priv->columns) : g_list_first (tree_view->priv->columns));
8743        list;
8744        list = (rtl ? list->prev : list->next))
8745     {
8746       tmp_column = list->data;
8747
8748       if (tmp_column == column)
8749         break;
8750
8751       if (tmp_column->visible)
8752         total_width += tmp_column->width;
8753     }
8754
8755   if (tmp_column != column)
8756     {
8757       g_warning (G_STRLOC": passed-in column isn't in the tree");
8758       return;
8759     }
8760
8761   if (x1)
8762     *x1 = total_width;
8763
8764   if (x2)
8765     {
8766       if (column->visible)
8767         *x2 = total_width + column->width;
8768       else
8769         *x2 = total_width; /* width of 0 */
8770     }
8771 }
8772 static void
8773 gtk_tree_view_get_arrow_xrange (GtkTreeView *tree_view,
8774                                 GtkRBTree   *tree,
8775                                 gint        *x1,
8776                                 gint        *x2)
8777 {
8778   gint x_offset = 0;
8779   GList *list;
8780   GtkTreeViewColumn *tmp_column = NULL;
8781   gint total_width;
8782   gboolean indent_expanders;
8783   gboolean rtl;
8784
8785   rtl = (gtk_widget_get_direction (GTK_WIDGET (tree_view)) == GTK_TEXT_DIR_RTL);
8786
8787   total_width = 0;
8788   for (list = (rtl ? g_list_last (tree_view->priv->columns) : g_list_first (tree_view->priv->columns));
8789        list;
8790        list = (rtl ? list->prev : list->next))
8791     {
8792       tmp_column = list->data;
8793
8794       if (gtk_tree_view_is_expander_column (tree_view, tmp_column))
8795         {
8796           if (rtl)
8797             x_offset = total_width + tmp_column->width - tree_view->priv->expander_size;
8798           else
8799             x_offset = total_width;
8800           break;
8801         }
8802
8803       if (tmp_column->visible)
8804         total_width += tmp_column->width;
8805     }
8806
8807   gtk_widget_style_get (GTK_WIDGET (tree_view),
8808                         "indent-expanders", &indent_expanders,
8809                         NULL);
8810
8811   if (indent_expanders)
8812     {
8813       if (rtl)
8814         x_offset -= tree_view->priv->expander_size * _gtk_rbtree_get_depth (tree);
8815       else
8816         x_offset += tree_view->priv->expander_size * _gtk_rbtree_get_depth (tree);
8817     }
8818
8819   *x1 = x_offset;
8820
8821   if (tmp_column && tmp_column->visible)
8822     /* +1 because x2 isn't included in the range. */
8823     *x2 = *x1 + tree_view->priv->expander_size + 1;
8824   else
8825     *x2 = *x1;
8826 }
8827
8828 static void
8829 gtk_tree_view_build_tree (GtkTreeView *tree_view,
8830                           GtkRBTree   *tree,
8831                           GtkTreeIter *iter,
8832                           gint         depth,
8833                           gboolean     recurse)
8834 {
8835   GtkRBNode *temp = NULL;
8836   GtkTreePath *path = NULL;
8837   gboolean is_list = GTK_TREE_VIEW_FLAG_SET (tree_view, GTK_TREE_VIEW_IS_LIST);
8838
8839   do
8840     {
8841       gtk_tree_model_ref_node (tree_view->priv->model, iter);
8842       temp = _gtk_rbtree_insert_after (tree, temp, 0, FALSE);
8843
8844       if (tree_view->priv->fixed_height > 0)
8845         {
8846           if (GTK_RBNODE_FLAG_SET (temp, GTK_RBNODE_INVALID))
8847             {
8848               _gtk_rbtree_node_set_height (tree, temp, tree_view->priv->fixed_height);
8849               _gtk_rbtree_node_mark_valid (tree, temp);
8850             }
8851         }
8852
8853       if (is_list)
8854         continue;
8855
8856       if (recurse)
8857         {
8858           GtkTreeIter child;
8859
8860           if (!path)
8861             path = gtk_tree_model_get_path (tree_view->priv->model, iter);
8862           else
8863             gtk_tree_path_next (path);
8864
8865           if (gtk_tree_model_iter_children (tree_view->priv->model, &child, iter))
8866             {
8867               gboolean expand;
8868
8869               g_signal_emit (tree_view, tree_view_signals[TEST_EXPAND_ROW], 0, iter, path, &expand);
8870
8871               if (gtk_tree_model_iter_has_child (tree_view->priv->model, iter)
8872                   && !expand)
8873                 {
8874                   temp->children = _gtk_rbtree_new ();
8875                   temp->children->parent_tree = tree;
8876                   temp->children->parent_node = temp;
8877                   gtk_tree_view_build_tree (tree_view, temp->children, &child, depth + 1, recurse);
8878                 }
8879             }
8880         }
8881
8882       if (gtk_tree_model_iter_has_child (tree_view->priv->model, iter))
8883         {
8884           if ((temp->flags&GTK_RBNODE_IS_PARENT) != GTK_RBNODE_IS_PARENT)
8885             temp->flags ^= GTK_RBNODE_IS_PARENT;
8886         }
8887     }
8888   while (gtk_tree_model_iter_next (tree_view->priv->model, iter));
8889
8890   if (path)
8891     gtk_tree_path_free (path);
8892 }
8893
8894 /* Make sure the node is visible vertically */
8895 static void
8896 gtk_tree_view_clamp_node_visible (GtkTreeView *tree_view,
8897                                   GtkRBTree   *tree,
8898                                   GtkRBNode   *node)
8899 {
8900   gint node_dy, height;
8901   GtkTreePath *path = NULL;
8902
8903   if (!gtk_widget_get_realized (GTK_WIDGET (tree_view)))
8904     return;
8905
8906   /* just return if the node is visible, avoiding a costly expose */
8907   node_dy = _gtk_rbtree_node_find_offset (tree, node);
8908   height = ROW_HEIGHT (tree_view, GTK_RBNODE_GET_HEIGHT (node));
8909   if (! GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_INVALID)
8910       && node_dy >= tree_view->priv->vadjustment->value
8911       && node_dy + height <= (tree_view->priv->vadjustment->value
8912                               + tree_view->priv->vadjustment->page_size))
8913     return;
8914
8915   path = _gtk_tree_view_find_path (tree_view, tree, node);
8916   if (path)
8917     {
8918       /* We process updates because we want to clear old selected items when we scroll.
8919        * if this is removed, we get a "selection streak" at the bottom. */
8920       gdk_window_process_updates (tree_view->priv->bin_window, TRUE);
8921       gtk_tree_view_scroll_to_cell (tree_view, path, NULL, FALSE, 0.0, 0.0);
8922       gtk_tree_path_free (path);
8923     }
8924 }
8925
8926 static void
8927 gtk_tree_view_clamp_column_visible (GtkTreeView       *tree_view,
8928                                     GtkTreeViewColumn *column,
8929                                     gboolean           focus_to_cell)
8930 {
8931   gint x, width;
8932
8933   if (column == NULL)
8934     return;
8935
8936   x = column->button->allocation.x;
8937   width = column->button->allocation.width;
8938
8939   if (width > tree_view->priv->hadjustment->page_size)
8940     {
8941       /* The column is larger than the horizontal page size.  If the
8942        * column has cells which can be focussed individually, then we make
8943        * sure the cell which gets focus is fully visible (if even the
8944        * focus cell is bigger than the page size, we make sure the
8945        * left-hand side of the cell is visible).
8946        *
8947        * If the column does not have those so-called special cells, we
8948        * make sure the left-hand side of the column is visible.
8949        */
8950
8951       if (focus_to_cell && gtk_tree_view_has_special_cell (tree_view))
8952         {
8953           GtkTreePath *cursor_path;
8954           GdkRectangle background_area, cell_area, focus_area;
8955
8956           cursor_path = gtk_tree_row_reference_get_path (tree_view->priv->cursor);
8957
8958           gtk_tree_view_get_cell_area (tree_view,
8959                                        cursor_path, column, &cell_area);
8960           gtk_tree_view_get_background_area (tree_view,
8961                                              cursor_path, column,
8962                                              &background_area);
8963
8964           gtk_tree_path_free (cursor_path);
8965
8966           _gtk_tree_view_column_get_focus_area (column,
8967                                                 &background_area,
8968                                                 &cell_area,
8969                                                 &focus_area);
8970
8971           x = focus_area.x;
8972           width = focus_area.width;
8973
8974           if (width < tree_view->priv->hadjustment->page_size)
8975             {
8976               if ((tree_view->priv->hadjustment->value + tree_view->priv->hadjustment->page_size) < (x + width))
8977                 gtk_adjustment_set_value (tree_view->priv->hadjustment,
8978                                           x + width - tree_view->priv->hadjustment->page_size);
8979               else if (tree_view->priv->hadjustment->value > x)
8980                 gtk_adjustment_set_value (tree_view->priv->hadjustment, x);
8981             }
8982         }
8983
8984       gtk_adjustment_set_value (tree_view->priv->hadjustment,
8985                                 CLAMP (x,
8986                                        tree_view->priv->hadjustment->lower,
8987                                        tree_view->priv->hadjustment->upper
8988                                        - tree_view->priv->hadjustment->page_size));
8989     }
8990   else
8991     {
8992       if ((tree_view->priv->hadjustment->value + tree_view->priv->hadjustment->page_size) < (x + width))
8993           gtk_adjustment_set_value (tree_view->priv->hadjustment,
8994                                     x + width - tree_view->priv->hadjustment->page_size);
8995       else if (tree_view->priv->hadjustment->value > x)
8996         gtk_adjustment_set_value (tree_view->priv->hadjustment, x);
8997   }
8998 }
8999
9000 /* This function could be more efficient.  I'll optimize it if profiling seems
9001  * to imply that it is important */
9002 GtkTreePath *
9003 _gtk_tree_view_find_path (GtkTreeView *tree_view,
9004                           GtkRBTree   *tree,
9005                           GtkRBNode   *node)
9006 {
9007   GtkTreePath *path;
9008   GtkRBTree *tmp_tree;
9009   GtkRBNode *tmp_node, *last;
9010   gint count;
9011
9012   path = gtk_tree_path_new ();
9013
9014   g_return_val_if_fail (node != NULL, path);
9015   g_return_val_if_fail (node != tree->nil, path);
9016
9017   count = 1 + node->left->count;
9018
9019   last = node;
9020   tmp_node = node->parent;
9021   tmp_tree = tree;
9022   while (tmp_tree)
9023     {
9024       while (tmp_node != tmp_tree->nil)
9025         {
9026           if (tmp_node->right == last)
9027             count += 1 + tmp_node->left->count;
9028           last = tmp_node;
9029           tmp_node = tmp_node->parent;
9030         }
9031       gtk_tree_path_prepend_index (path, count - 1);
9032       last = tmp_tree->parent_node;
9033       tmp_tree = tmp_tree->parent_tree;
9034       if (last)
9035         {
9036           count = 1 + last->left->count;
9037           tmp_node = last->parent;
9038         }
9039     }
9040   return path;
9041 }
9042
9043 /* Returns TRUE if we ran out of tree before finding the path.  If the path is
9044  * invalid (ie. points to a node that's not in the tree), *tree and *node are
9045  * both set to NULL.
9046  */
9047 gboolean
9048 _gtk_tree_view_find_node (GtkTreeView  *tree_view,
9049                           GtkTreePath  *path,
9050                           GtkRBTree   **tree,
9051                           GtkRBNode   **node)
9052 {
9053   GtkRBNode *tmpnode = NULL;
9054   GtkRBTree *tmptree = tree_view->priv->tree;
9055   gint *indices = gtk_tree_path_get_indices (path);
9056   gint depth = gtk_tree_path_get_depth (path);
9057   gint i = 0;
9058
9059   *node = NULL;
9060   *tree = NULL;
9061
9062   if (depth == 0 || tmptree == NULL)
9063     return FALSE;
9064   do
9065     {
9066       tmpnode = _gtk_rbtree_find_count (tmptree, indices[i] + 1);
9067       ++i;
9068       if (tmpnode == NULL)
9069         {
9070           *tree = NULL;
9071           *node = NULL;
9072           return FALSE;
9073         }
9074       if (i >= depth)
9075         {
9076           *tree = tmptree;
9077           *node = tmpnode;
9078           return FALSE;
9079         }
9080       *tree = tmptree;
9081       *node = tmpnode;
9082       tmptree = tmpnode->children;
9083       if (tmptree == NULL)
9084         return TRUE;
9085     }
9086   while (1);
9087 }
9088
9089 static gboolean
9090 gtk_tree_view_is_expander_column (GtkTreeView       *tree_view,
9091                                   GtkTreeViewColumn *column)
9092 {
9093   GList *list;
9094
9095   if (GTK_TREE_VIEW_FLAG_SET (tree_view, GTK_TREE_VIEW_IS_LIST))
9096     return FALSE;
9097
9098   if (tree_view->priv->expander_column != NULL)
9099     {
9100       if (tree_view->priv->expander_column == column)
9101         return TRUE;
9102       return FALSE;
9103     }
9104   else
9105     {
9106       for (list = tree_view->priv->columns;
9107            list;
9108            list = list->next)
9109         if (((GtkTreeViewColumn *)list->data)->visible)
9110           break;
9111       if (list && list->data == column)
9112         return TRUE;
9113     }
9114   return FALSE;
9115 }
9116
9117 static void
9118 gtk_tree_view_add_move_binding (GtkBindingSet  *binding_set,
9119                                 guint           keyval,
9120                                 guint           modmask,
9121                                 gboolean        add_shifted_binding,
9122                                 GtkMovementStep step,
9123                                 gint            count)
9124 {
9125
9126   gtk_binding_entry_add_signal (binding_set, keyval, modmask,
9127                                 "move-cursor", 2,
9128                                 G_TYPE_ENUM, step,
9129                                 G_TYPE_INT, count);
9130
9131   if (add_shifted_binding)
9132     gtk_binding_entry_add_signal (binding_set, keyval, GDK_SHIFT_MASK,
9133                                   "move-cursor", 2,
9134                                   G_TYPE_ENUM, step,
9135                                   G_TYPE_INT, count);
9136
9137   if ((modmask & GDK_CONTROL_MASK) == GDK_CONTROL_MASK)
9138    return;
9139
9140   gtk_binding_entry_add_signal (binding_set, keyval, GDK_CONTROL_MASK | GDK_SHIFT_MASK,
9141                                 "move-cursor", 2,
9142                                 G_TYPE_ENUM, step,
9143                                 G_TYPE_INT, count);
9144
9145   gtk_binding_entry_add_signal (binding_set, keyval, GDK_CONTROL_MASK,
9146                                 "move-cursor", 2,
9147                                 G_TYPE_ENUM, step,
9148                                 G_TYPE_INT, count);
9149 }
9150
9151 static gint
9152 gtk_tree_view_unref_tree_helper (GtkTreeModel *model,
9153                                  GtkTreeIter  *iter,
9154                                  GtkRBTree    *tree,
9155                                  GtkRBNode    *node)
9156 {
9157   gint retval = FALSE;
9158   do
9159     {
9160       g_return_val_if_fail (node != NULL, FALSE);
9161
9162       if (node->children)
9163         {
9164           GtkTreeIter child;
9165           GtkRBTree *new_tree;
9166           GtkRBNode *new_node;
9167
9168           new_tree = node->children;
9169           new_node = new_tree->root;
9170
9171           while (new_node && new_node->left != new_tree->nil)
9172             new_node = new_node->left;
9173
9174           if (!gtk_tree_model_iter_children (model, &child, iter))
9175             return FALSE;
9176
9177           retval = retval || gtk_tree_view_unref_tree_helper (model, &child, new_tree, new_node);
9178         }
9179
9180       if (GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_SELECTED))
9181         retval = TRUE;
9182       gtk_tree_model_unref_node (model, iter);
9183       node = _gtk_rbtree_next (tree, node);
9184     }
9185   while (gtk_tree_model_iter_next (model, iter));
9186
9187   return retval;
9188 }
9189
9190 static gint
9191 gtk_tree_view_unref_and_check_selection_tree (GtkTreeView *tree_view,
9192                                               GtkRBTree   *tree)
9193 {
9194   GtkTreeIter iter;
9195   GtkTreePath *path;
9196   GtkRBNode *node;
9197   gint retval;
9198
9199   if (!tree)
9200     return FALSE;
9201
9202   node = tree->root;
9203   while (node && node->left != tree->nil)
9204     node = node->left;
9205
9206   g_return_val_if_fail (node != NULL, FALSE);
9207   path = _gtk_tree_view_find_path (tree_view, tree, node);
9208   gtk_tree_model_get_iter (GTK_TREE_MODEL (tree_view->priv->model),
9209                            &iter, path);
9210   retval = gtk_tree_view_unref_tree_helper (GTK_TREE_MODEL (tree_view->priv->model), &iter, tree, node);
9211   gtk_tree_path_free (path);
9212
9213   return retval;
9214 }
9215
9216 static void
9217 gtk_tree_view_set_column_drag_info (GtkTreeView       *tree_view,
9218                                     GtkTreeViewColumn *column)
9219 {
9220   GtkTreeViewColumn *left_column;
9221   GtkTreeViewColumn *cur_column = NULL;
9222   GtkTreeViewColumnReorder *reorder;
9223   gboolean rtl;
9224   GList *tmp_list;
9225   gint left;
9226
9227   /* We want to precalculate the motion list such that we know what column slots
9228    * are available.
9229    */
9230   left_column = NULL;
9231   rtl = (gtk_widget_get_direction (GTK_WIDGET (tree_view)) == GTK_TEXT_DIR_RTL);
9232
9233   /* First, identify all possible drop spots */
9234   if (rtl)
9235     tmp_list = g_list_last (tree_view->priv->columns);
9236   else
9237     tmp_list = g_list_first (tree_view->priv->columns);
9238
9239   while (tmp_list)
9240     {
9241       cur_column = GTK_TREE_VIEW_COLUMN (tmp_list->data);
9242       tmp_list = rtl?g_list_previous (tmp_list):g_list_next (tmp_list);
9243
9244       if (cur_column->visible == FALSE)
9245         continue;
9246
9247       /* If it's not the column moving and func tells us to skip over the column, we continue. */
9248       if (left_column != column && cur_column != column &&
9249           tree_view->priv->column_drop_func &&
9250           ! tree_view->priv->column_drop_func (tree_view, column, left_column, cur_column, tree_view->priv->column_drop_func_data))
9251         {
9252           left_column = cur_column;
9253           continue;
9254         }
9255       reorder = g_slice_new0 (GtkTreeViewColumnReorder);
9256       reorder->left_column = left_column;
9257       left_column = reorder->right_column = cur_column;
9258
9259       tree_view->priv->column_drag_info = g_list_append (tree_view->priv->column_drag_info, reorder);
9260     }
9261
9262   /* Add the last one */
9263   if (tree_view->priv->column_drop_func == NULL ||
9264       ((left_column != column) &&
9265        tree_view->priv->column_drop_func (tree_view, column, left_column, NULL, tree_view->priv->column_drop_func_data)))
9266     {
9267       reorder = g_slice_new0 (GtkTreeViewColumnReorder);
9268       reorder->left_column = left_column;
9269       reorder->right_column = NULL;
9270       tree_view->priv->column_drag_info = g_list_append (tree_view->priv->column_drag_info, reorder);
9271     }
9272
9273   /* We quickly check to see if it even makes sense to reorder columns. */
9274   /* If there is nothing that can be moved, then we return */
9275
9276   if (tree_view->priv->column_drag_info == NULL)
9277     return;
9278
9279   /* We know there are always 2 slots possbile, as you can always return column. */
9280   /* If that's all there is, return */
9281   if (tree_view->priv->column_drag_info->next == NULL ||
9282       (tree_view->priv->column_drag_info->next->next == NULL &&
9283        ((GtkTreeViewColumnReorder *)tree_view->priv->column_drag_info->data)->right_column == column &&
9284        ((GtkTreeViewColumnReorder *)tree_view->priv->column_drag_info->next->data)->left_column == column))
9285     {
9286       for (tmp_list = tree_view->priv->column_drag_info; tmp_list; tmp_list = tmp_list->next)
9287         g_slice_free (GtkTreeViewColumnReorder, tmp_list->data);
9288       g_list_free (tree_view->priv->column_drag_info);
9289       tree_view->priv->column_drag_info = NULL;
9290       return;
9291     }
9292   /* We fill in the ranges for the columns, now that we've isolated them */
9293   left = - TREE_VIEW_COLUMN_DRAG_DEAD_MULTIPLIER (tree_view);
9294
9295   for (tmp_list = tree_view->priv->column_drag_info; tmp_list; tmp_list = tmp_list->next)
9296     {
9297       reorder = (GtkTreeViewColumnReorder *) tmp_list->data;
9298
9299       reorder->left_align = left;
9300       if (tmp_list->next != NULL)
9301         {
9302           g_assert (tmp_list->next->data);
9303           left = reorder->right_align = (reorder->right_column->button->allocation.x +
9304                                          reorder->right_column->button->allocation.width +
9305                                          ((GtkTreeViewColumnReorder *)tmp_list->next->data)->left_column->button->allocation.x)/2;
9306         }
9307       else
9308         {
9309           gint width;
9310
9311           gdk_drawable_get_size (tree_view->priv->header_window, &width, NULL);
9312           reorder->right_align = width + TREE_VIEW_COLUMN_DRAG_DEAD_MULTIPLIER (tree_view);
9313         }
9314     }
9315 }
9316
9317 void
9318 _gtk_tree_view_column_start_drag (GtkTreeView       *tree_view,
9319                                   GtkTreeViewColumn *column)
9320 {
9321   GdkEvent *send_event;
9322   GtkAllocation allocation;
9323   gint x, y, width, height;
9324   GdkScreen *screen = gtk_widget_get_screen (GTK_WIDGET (tree_view));
9325   GdkDisplay *display = gdk_screen_get_display (screen);
9326
9327   g_return_if_fail (tree_view->priv->column_drag_info == NULL);
9328   g_return_if_fail (tree_view->priv->cur_reorder == NULL);
9329
9330   gtk_tree_view_set_column_drag_info (tree_view, column);
9331
9332   if (tree_view->priv->column_drag_info == NULL)
9333     return;
9334
9335   if (tree_view->priv->drag_window == NULL)
9336     {
9337       GdkWindowAttr attributes;
9338       guint attributes_mask;
9339
9340       attributes.window_type = GDK_WINDOW_CHILD;
9341       attributes.wclass = GDK_INPUT_OUTPUT;
9342       attributes.x = column->button->allocation.x;
9343       attributes.y = 0;
9344       attributes.width = column->button->allocation.width;
9345       attributes.height = column->button->allocation.height;
9346       attributes.visual = gtk_widget_get_visual (GTK_WIDGET (tree_view));
9347       attributes.colormap = gtk_widget_get_colormap (GTK_WIDGET (tree_view));
9348       attributes.event_mask = GDK_VISIBILITY_NOTIFY_MASK | GDK_EXPOSURE_MASK | GDK_POINTER_MOTION_MASK;
9349       attributes_mask = GDK_WA_X | GDK_WA_Y | GDK_WA_VISUAL | GDK_WA_COLORMAP;
9350
9351       tree_view->priv->drag_window = gdk_window_new (tree_view->priv->bin_window,
9352                                                      &attributes,
9353                                                      attributes_mask);
9354       gdk_window_set_user_data (tree_view->priv->drag_window, GTK_WIDGET (tree_view));
9355     }
9356
9357   gdk_display_pointer_ungrab (display, GDK_CURRENT_TIME);
9358   gdk_display_keyboard_ungrab (display, GDK_CURRENT_TIME);
9359
9360   gtk_grab_remove (column->button);
9361
9362   send_event = gdk_event_new (GDK_LEAVE_NOTIFY);
9363   send_event->crossing.send_event = TRUE;
9364   send_event->crossing.window = g_object_ref (GTK_BUTTON (column->button)->event_window);
9365   send_event->crossing.subwindow = NULL;
9366   send_event->crossing.detail = GDK_NOTIFY_ANCESTOR;
9367   send_event->crossing.time = GDK_CURRENT_TIME;
9368
9369   gtk_propagate_event (column->button, send_event);
9370   gdk_event_free (send_event);
9371
9372   send_event = gdk_event_new (GDK_BUTTON_RELEASE);
9373   send_event->button.window = g_object_ref (gdk_screen_get_root_window (screen));
9374   send_event->button.send_event = TRUE;
9375   send_event->button.time = GDK_CURRENT_TIME;
9376   send_event->button.x = -1;
9377   send_event->button.y = -1;
9378   send_event->button.axes = NULL;
9379   send_event->button.state = 0;
9380   send_event->button.button = 1;
9381   send_event->button.device = gdk_display_get_core_pointer (display);
9382   send_event->button.x_root = 0;
9383   send_event->button.y_root = 0;
9384
9385   gtk_propagate_event (column->button, send_event);
9386   gdk_event_free (send_event);
9387
9388   /* Kids, don't try this at home */
9389   g_object_ref (column->button);
9390   gtk_container_remove (GTK_CONTAINER (tree_view), column->button);
9391   gtk_widget_set_parent_window (column->button, tree_view->priv->drag_window);
9392   gtk_widget_set_parent (column->button, GTK_WIDGET (tree_view));
9393   g_object_unref (column->button);
9394
9395   tree_view->priv->drag_column_x = column->button->allocation.x;
9396   allocation = column->button->allocation;
9397   allocation.x = 0;
9398   gtk_widget_size_allocate (column->button, &allocation);
9399   gtk_widget_set_parent_window (column->button, tree_view->priv->drag_window);
9400
9401   tree_view->priv->drag_column = column;
9402   gdk_window_show (tree_view->priv->drag_window);
9403
9404   gdk_window_get_origin (tree_view->priv->header_window, &x, &y);
9405   gdk_drawable_get_size (tree_view->priv->header_window, &width, &height);
9406
9407   gtk_widget_grab_focus (GTK_WIDGET (tree_view));
9408   while (gtk_events_pending ())
9409     gtk_main_iteration ();
9410
9411   GTK_TREE_VIEW_SET_FLAG (tree_view, GTK_TREE_VIEW_IN_COLUMN_DRAG);
9412   gdk_pointer_grab (tree_view->priv->drag_window,
9413                     FALSE,
9414                     GDK_POINTER_MOTION_MASK|GDK_BUTTON_RELEASE_MASK,
9415                     NULL, NULL, GDK_CURRENT_TIME);
9416   gdk_keyboard_grab (tree_view->priv->drag_window,
9417                      FALSE,
9418                      GDK_CURRENT_TIME);
9419 }
9420
9421 static void
9422 gtk_tree_view_queue_draw_arrow (GtkTreeView        *tree_view,
9423                                 GtkRBTree          *tree,
9424                                 GtkRBNode          *node,
9425                                 const GdkRectangle *clip_rect)
9426 {
9427   GdkRectangle rect;
9428
9429   if (!gtk_widget_get_realized (GTK_WIDGET (tree_view)))
9430     return;
9431
9432   rect.x = 0;
9433   rect.width = MAX (tree_view->priv->expander_size, MAX (tree_view->priv->width, GTK_WIDGET (tree_view)->allocation.width));
9434
9435   rect.y = BACKGROUND_FIRST_PIXEL (tree_view, tree, node);
9436   rect.height = ROW_HEIGHT (tree_view, BACKGROUND_HEIGHT (node));
9437
9438   if (clip_rect)
9439     {
9440       GdkRectangle new_rect;
9441
9442       gdk_rectangle_intersect (clip_rect, &rect, &new_rect);
9443
9444       gdk_window_invalidate_rect (tree_view->priv->bin_window, &new_rect, TRUE);
9445     }
9446   else
9447     {
9448       gdk_window_invalidate_rect (tree_view->priv->bin_window, &rect, TRUE);
9449     }
9450 }
9451
9452 void
9453 _gtk_tree_view_queue_draw_node (GtkTreeView        *tree_view,
9454                                 GtkRBTree          *tree,
9455                                 GtkRBNode          *node,
9456                                 const GdkRectangle *clip_rect)
9457 {
9458   GdkRectangle rect;
9459
9460   if (!gtk_widget_get_realized (GTK_WIDGET (tree_view)))
9461     return;
9462
9463   rect.x = 0;
9464   rect.width = MAX (tree_view->priv->width, GTK_WIDGET (tree_view)->allocation.width);
9465
9466   rect.y = BACKGROUND_FIRST_PIXEL (tree_view, tree, node);
9467   rect.height = ROW_HEIGHT (tree_view, BACKGROUND_HEIGHT (node));
9468
9469   if (clip_rect)
9470     {
9471       GdkRectangle new_rect;
9472
9473       gdk_rectangle_intersect (clip_rect, &rect, &new_rect);
9474
9475       gdk_window_invalidate_rect (tree_view->priv->bin_window, &new_rect, TRUE);
9476     }
9477   else
9478     {
9479       gdk_window_invalidate_rect (tree_view->priv->bin_window, &rect, TRUE);
9480     }
9481 }
9482
9483 static void
9484 gtk_tree_view_queue_draw_path (GtkTreeView        *tree_view,
9485                                GtkTreePath        *path,
9486                                const GdkRectangle *clip_rect)
9487 {
9488   GtkRBTree *tree = NULL;
9489   GtkRBNode *node = NULL;
9490
9491   _gtk_tree_view_find_node (tree_view, path, &tree, &node);
9492
9493   if (tree)
9494     _gtk_tree_view_queue_draw_node (tree_view, tree, node, clip_rect);
9495 }
9496
9497 /* x and y are the mouse position
9498  */
9499 static void
9500 gtk_tree_view_draw_arrow (GtkTreeView *tree_view,
9501                           GtkRBTree   *tree,
9502                           GtkRBNode   *node,
9503                           /* in bin_window coordinates */
9504                           gint         x,
9505                           gint         y)
9506 {
9507   GdkRectangle area;
9508   GtkStateType state;
9509   GtkWidget *widget;
9510   gint x_offset = 0;
9511   gint x2;
9512   gint vertical_separator;
9513   gint expander_size;
9514   GtkExpanderStyle expander_style;
9515
9516   gtk_widget_style_get (GTK_WIDGET (tree_view),
9517                         "vertical-separator", &vertical_separator,
9518                         NULL);
9519   expander_size = tree_view->priv->expander_size - EXPANDER_EXTRA_PADDING;
9520
9521   if (! GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_PARENT))
9522     return;
9523
9524   widget = GTK_WIDGET (tree_view);
9525
9526   gtk_tree_view_get_arrow_xrange (tree_view, tree, &x_offset, &x2);
9527
9528   area.x = x_offset;
9529   area.y = CELL_FIRST_PIXEL (tree_view, tree, node, vertical_separator);
9530   area.width = expander_size + 2;
9531   area.height = MAX (CELL_HEIGHT (node, vertical_separator), (expander_size - vertical_separator));
9532
9533   if (GTK_WIDGET_STATE (tree_view) == GTK_STATE_INSENSITIVE)
9534     {
9535       state = GTK_STATE_INSENSITIVE;
9536     }
9537   else if (node == tree_view->priv->button_pressed_node)
9538     {
9539       if (x >= area.x && x <= (area.x + area.width) &&
9540           y >= area.y && y <= (area.y + area.height))
9541         state = GTK_STATE_ACTIVE;
9542       else
9543         state = GTK_STATE_NORMAL;
9544     }
9545   else
9546     {
9547       if (node == tree_view->priv->prelight_node &&
9548           GTK_TREE_VIEW_FLAG_SET (tree_view, GTK_TREE_VIEW_ARROW_PRELIT))
9549         state = GTK_STATE_PRELIGHT;
9550       else
9551         state = GTK_STATE_NORMAL;
9552     }
9553
9554   if (GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_SEMI_EXPANDED))
9555     expander_style = GTK_EXPANDER_SEMI_EXPANDED;
9556   else if (GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_SEMI_COLLAPSED))
9557     expander_style = GTK_EXPANDER_SEMI_COLLAPSED;
9558   else if (node->children != NULL)
9559     expander_style = GTK_EXPANDER_EXPANDED;
9560   else
9561     expander_style = GTK_EXPANDER_COLLAPSED;
9562
9563   gtk_paint_expander (widget->style,
9564                       tree_view->priv->bin_window,
9565                       state,
9566                       &area,
9567                       widget,
9568                       "treeview",
9569                       area.x + area.width / 2,
9570                       area.y + area.height / 2,
9571                       expander_style);
9572 }
9573
9574 static void
9575 gtk_tree_view_focus_to_cursor (GtkTreeView *tree_view)
9576
9577 {
9578   GtkTreePath *cursor_path;
9579
9580   if ((tree_view->priv->tree == NULL) ||
9581       (! gtk_widget_get_realized (GTK_WIDGET (tree_view))))
9582     return;
9583
9584   cursor_path = NULL;
9585   if (tree_view->priv->cursor)
9586     cursor_path = gtk_tree_row_reference_get_path (tree_view->priv->cursor);
9587
9588   if (cursor_path == NULL)
9589     {
9590       /* Consult the selection before defaulting to the
9591        * first focusable element
9592        */
9593       GList *selected_rows;
9594       GtkTreeModel *model;
9595       GtkTreeSelection *selection;
9596
9597       selection = gtk_tree_view_get_selection (tree_view);
9598       selected_rows = gtk_tree_selection_get_selected_rows (selection, &model);
9599
9600       if (selected_rows)
9601         {
9602           cursor_path = gtk_tree_path_copy((const GtkTreePath *)(selected_rows->data));
9603           g_list_foreach (selected_rows, (GFunc)gtk_tree_path_free, NULL);
9604           g_list_free (selected_rows);
9605         }
9606       else
9607         {
9608           cursor_path = gtk_tree_path_new_first ();
9609           search_first_focusable_path (tree_view, &cursor_path,
9610                                        TRUE, NULL, NULL);
9611         }
9612
9613       gtk_tree_row_reference_free (tree_view->priv->cursor);
9614       tree_view->priv->cursor = NULL;
9615
9616       if (cursor_path)
9617         {
9618           if (tree_view->priv->selection->type == GTK_SELECTION_MULTIPLE)
9619             gtk_tree_view_real_set_cursor (tree_view, cursor_path, FALSE, FALSE);
9620           else
9621             gtk_tree_view_real_set_cursor (tree_view, cursor_path, TRUE, FALSE);
9622         }
9623     }
9624
9625   if (cursor_path)
9626     {
9627       GTK_TREE_VIEW_SET_FLAG (tree_view, GTK_TREE_VIEW_DRAW_KEYFOCUS);
9628
9629       gtk_tree_view_queue_draw_path (tree_view, cursor_path, NULL);
9630       gtk_tree_path_free (cursor_path);
9631
9632       if (tree_view->priv->focus_column == NULL)
9633         {
9634           GList *list;
9635           for (list = tree_view->priv->columns; list; list = list->next)
9636             {
9637               if (GTK_TREE_VIEW_COLUMN (list->data)->visible)
9638                 {
9639                   tree_view->priv->focus_column = GTK_TREE_VIEW_COLUMN (list->data);
9640                   break;
9641                 }
9642             }
9643         }
9644     }
9645 }
9646
9647 static void
9648 gtk_tree_view_move_cursor_up_down (GtkTreeView *tree_view,
9649                                    gint         count)
9650 {
9651   gint selection_count;
9652   GtkRBTree *cursor_tree = NULL;
9653   GtkRBNode *cursor_node = NULL;
9654   GtkRBTree *new_cursor_tree = NULL;
9655   GtkRBNode *new_cursor_node = NULL;
9656   GtkTreePath *cursor_path = NULL;
9657   gboolean grab_focus = TRUE;
9658   gboolean selectable;
9659
9660   if (! gtk_widget_has_focus (GTK_WIDGET (tree_view)))
9661     return;
9662
9663   cursor_path = NULL;
9664   if (!gtk_tree_row_reference_valid (tree_view->priv->cursor))
9665     /* FIXME: we lost the cursor; should we get the first? */
9666     return;
9667
9668   cursor_path = gtk_tree_row_reference_get_path (tree_view->priv->cursor);
9669   _gtk_tree_view_find_node (tree_view, cursor_path,
9670                             &cursor_tree, &cursor_node);
9671
9672   if (cursor_tree == NULL)
9673     /* FIXME: we lost the cursor; should we get the first? */
9674     return;
9675
9676   selection_count = gtk_tree_selection_count_selected_rows (tree_view->priv->selection);
9677   selectable = _gtk_tree_selection_row_is_selectable (tree_view->priv->selection,
9678                                                       cursor_node,
9679                                                       cursor_path);
9680
9681   if (selection_count == 0
9682       && tree_view->priv->selection->type != GTK_SELECTION_NONE
9683       && !tree_view->priv->ctrl_pressed
9684       && selectable)
9685     {
9686       /* Don't move the cursor, but just select the current node */
9687       new_cursor_tree = cursor_tree;
9688       new_cursor_node = cursor_node;
9689     }
9690   else
9691     {
9692       if (count == -1)
9693         _gtk_rbtree_prev_full (cursor_tree, cursor_node,
9694                                &new_cursor_tree, &new_cursor_node);
9695       else
9696         _gtk_rbtree_next_full (cursor_tree, cursor_node,
9697                                &new_cursor_tree, &new_cursor_node);
9698     }
9699
9700   gtk_tree_path_free (cursor_path);
9701
9702   if (new_cursor_node)
9703     {
9704       cursor_path = _gtk_tree_view_find_path (tree_view,
9705                                               new_cursor_tree, new_cursor_node);
9706
9707       search_first_focusable_path (tree_view, &cursor_path,
9708                                    (count != -1),
9709                                    &new_cursor_tree,
9710                                    &new_cursor_node);
9711
9712       if (cursor_path)
9713         gtk_tree_path_free (cursor_path);
9714     }
9715
9716   /*
9717    * If the list has only one item and multi-selection is set then select
9718    * the row (if not yet selected).
9719    */
9720   if (tree_view->priv->selection->type == GTK_SELECTION_MULTIPLE &&
9721       new_cursor_node == NULL)
9722     {
9723       if (count == -1)
9724         _gtk_rbtree_next_full (cursor_tree, cursor_node,
9725                                &new_cursor_tree, &new_cursor_node);
9726       else
9727         _gtk_rbtree_prev_full (cursor_tree, cursor_node,
9728                                &new_cursor_tree, &new_cursor_node);
9729
9730       if (new_cursor_node == NULL
9731           && !GTK_RBNODE_FLAG_SET (cursor_node, GTK_RBNODE_IS_SELECTED))
9732         {
9733           new_cursor_node = cursor_node;
9734           new_cursor_tree = cursor_tree;
9735         }
9736       else
9737         {
9738           new_cursor_node = NULL;
9739         }
9740     }
9741
9742   if (new_cursor_node)
9743     {
9744       cursor_path = _gtk_tree_view_find_path (tree_view, new_cursor_tree, new_cursor_node);
9745       gtk_tree_view_real_set_cursor (tree_view, cursor_path, TRUE, TRUE);
9746       gtk_tree_path_free (cursor_path);
9747     }
9748   else
9749     {
9750       gtk_tree_view_clamp_node_visible (tree_view, cursor_tree, cursor_node);
9751
9752       if (!tree_view->priv->shift_pressed)
9753         {
9754           if (! gtk_widget_keynav_failed (GTK_WIDGET (tree_view),
9755                                           count < 0 ?
9756                                           GTK_DIR_UP : GTK_DIR_DOWN))
9757             {
9758               GtkWidget *toplevel = gtk_widget_get_toplevel (GTK_WIDGET (tree_view));
9759
9760               if (toplevel)
9761                 gtk_widget_child_focus (toplevel,
9762                                         count < 0 ?
9763                                         GTK_DIR_TAB_BACKWARD :
9764                                         GTK_DIR_TAB_FORWARD);
9765
9766               grab_focus = FALSE;
9767             }
9768         }
9769       else
9770         {
9771           gtk_widget_error_bell (GTK_WIDGET (tree_view));
9772         }
9773     }
9774
9775   if (grab_focus)
9776     gtk_widget_grab_focus (GTK_WIDGET (tree_view));
9777 }
9778
9779 static void
9780 gtk_tree_view_move_cursor_page_up_down (GtkTreeView *tree_view,
9781                                         gint         count)
9782 {
9783   GtkRBTree *cursor_tree = NULL;
9784   GtkRBNode *cursor_node = NULL;
9785   GtkTreePath *old_cursor_path = NULL;
9786   GtkTreePath *cursor_path = NULL;
9787   GtkRBTree *start_cursor_tree = NULL;
9788   GtkRBNode *start_cursor_node = NULL;
9789   gint y;
9790   gint window_y;
9791   gint vertical_separator;
9792
9793   if (!gtk_widget_has_focus (GTK_WIDGET (tree_view)))
9794     return;
9795
9796   if (gtk_tree_row_reference_valid (tree_view->priv->cursor))
9797     old_cursor_path = gtk_tree_row_reference_get_path (tree_view->priv->cursor);
9798   else
9799     /* This is sorta weird.  Focus in should give us a cursor */
9800     return;
9801
9802   gtk_widget_style_get (GTK_WIDGET (tree_view), "vertical-separator", &vertical_separator, NULL);
9803   _gtk_tree_view_find_node (tree_view, old_cursor_path,
9804                             &cursor_tree, &cursor_node);
9805
9806   if (cursor_tree == NULL)
9807     {
9808       /* FIXME: we lost the cursor.  Should we try to get one? */
9809       gtk_tree_path_free (old_cursor_path);
9810       return;
9811     }
9812   g_return_if_fail (cursor_node != NULL);
9813
9814   y = _gtk_rbtree_node_find_offset (cursor_tree, cursor_node);
9815   window_y = RBTREE_Y_TO_TREE_WINDOW_Y (tree_view, y);
9816   y += tree_view->priv->cursor_offset;
9817   y += count * (int)tree_view->priv->vadjustment->page_increment;
9818   y = CLAMP (y, (gint)tree_view->priv->vadjustment->lower,  (gint)tree_view->priv->vadjustment->upper - vertical_separator);
9819
9820   if (y >= tree_view->priv->height)
9821     y = tree_view->priv->height - 1;
9822
9823   tree_view->priv->cursor_offset =
9824     _gtk_rbtree_find_offset (tree_view->priv->tree, y,
9825                              &cursor_tree, &cursor_node);
9826
9827   if (tree_view->priv->cursor_offset > BACKGROUND_HEIGHT (cursor_node))
9828     {
9829       _gtk_rbtree_next_full (cursor_tree, cursor_node,
9830                              &cursor_tree, &cursor_node);
9831       tree_view->priv->cursor_offset -= BACKGROUND_HEIGHT (cursor_node);
9832     }
9833
9834   y -= tree_view->priv->cursor_offset;
9835   cursor_path = _gtk_tree_view_find_path (tree_view, cursor_tree, cursor_node);
9836
9837   start_cursor_tree = cursor_tree;
9838   start_cursor_node = cursor_node;
9839
9840   if (! search_first_focusable_path (tree_view, &cursor_path,
9841                                      (count != -1),
9842                                      &cursor_tree, &cursor_node))
9843     {
9844       /* It looks like we reached the end of the view without finding
9845        * a focusable row.  We will step backwards to find the last
9846        * focusable row.
9847        */
9848       cursor_tree = start_cursor_tree;
9849       cursor_node = start_cursor_node;
9850       cursor_path = _gtk_tree_view_find_path (tree_view, cursor_tree, cursor_node);
9851
9852       search_first_focusable_path (tree_view, &cursor_path,
9853                                    (count == -1),
9854                                    &cursor_tree, &cursor_node);
9855     }
9856
9857   if (!cursor_path)
9858     goto cleanup;
9859
9860   /* update y */
9861   y = _gtk_rbtree_node_find_offset (cursor_tree, cursor_node);
9862
9863   gtk_tree_view_real_set_cursor (tree_view, cursor_path, TRUE, FALSE);
9864
9865   y -= window_y;
9866   gtk_tree_view_scroll_to_point (tree_view, -1, y);
9867   gtk_tree_view_clamp_node_visible (tree_view, cursor_tree, cursor_node);
9868   _gtk_tree_view_queue_draw_node (tree_view, cursor_tree, cursor_node, NULL);
9869
9870   if (!gtk_tree_path_compare (old_cursor_path, cursor_path))
9871     gtk_widget_error_bell (GTK_WIDGET (tree_view));
9872
9873   gtk_widget_grab_focus (GTK_WIDGET (tree_view));
9874
9875 cleanup:
9876   gtk_tree_path_free (old_cursor_path);
9877   gtk_tree_path_free (cursor_path);
9878 }
9879
9880 static void
9881 gtk_tree_view_move_cursor_left_right (GtkTreeView *tree_view,
9882                                       gint         count)
9883 {
9884   GtkRBTree *cursor_tree = NULL;
9885   GtkRBNode *cursor_node = NULL;
9886   GtkTreePath *cursor_path = NULL;
9887   GtkTreeViewColumn *column;
9888   GtkTreeIter iter;
9889   GList *list;
9890   gboolean found_column = FALSE;
9891   gboolean rtl;
9892
9893   rtl = (gtk_widget_get_direction (GTK_WIDGET (tree_view)) == GTK_TEXT_DIR_RTL);
9894
9895   if (!gtk_widget_has_focus (GTK_WIDGET (tree_view)))
9896     return;
9897
9898   if (gtk_tree_row_reference_valid (tree_view->priv->cursor))
9899     cursor_path = gtk_tree_row_reference_get_path (tree_view->priv->cursor);
9900   else
9901     return;
9902
9903   _gtk_tree_view_find_node (tree_view, cursor_path, &cursor_tree, &cursor_node);
9904   if (cursor_tree == NULL)
9905     return;
9906   if (gtk_tree_model_get_iter (tree_view->priv->model, &iter, cursor_path) == FALSE)
9907     {
9908       gtk_tree_path_free (cursor_path);
9909       return;
9910     }
9911   gtk_tree_path_free (cursor_path);
9912
9913   list = rtl ? g_list_last (tree_view->priv->columns) : g_list_first (tree_view->priv->columns);
9914   if (tree_view->priv->focus_column)
9915     {
9916       for (; list; list = (rtl ? list->prev : list->next))
9917         {
9918           if (list->data == tree_view->priv->focus_column)
9919             break;
9920         }
9921     }
9922
9923   while (list)
9924     {
9925       gboolean left, right;
9926
9927       column = list->data;
9928       if (column->visible == FALSE)
9929         goto loop_end;
9930
9931       gtk_tree_view_column_cell_set_cell_data (column,
9932                                                tree_view->priv->model,
9933                                                &iter,
9934                                                GTK_RBNODE_FLAG_SET (cursor_node, GTK_RBNODE_IS_PARENT),
9935                                                cursor_node->children?TRUE:FALSE);
9936
9937       if (rtl)
9938         {
9939           right = list->prev ? TRUE : FALSE;
9940           left = list->next ? TRUE : FALSE;
9941         }
9942       else
9943         {
9944           left = list->prev ? TRUE : FALSE;
9945           right = list->next ? TRUE : FALSE;
9946         }
9947
9948       if (_gtk_tree_view_column_cell_focus (column, count, left, right))
9949         {
9950           tree_view->priv->focus_column = column;
9951           found_column = TRUE;
9952           break;
9953         }
9954     loop_end:
9955       if (count == 1)
9956         list = rtl ? list->prev : list->next;
9957       else
9958         list = rtl ? list->next : list->prev;
9959     }
9960
9961   if (found_column)
9962     {
9963       if (!gtk_tree_view_has_special_cell (tree_view))
9964         _gtk_tree_view_queue_draw_node (tree_view,
9965                                         cursor_tree,
9966                                         cursor_node,
9967                                         NULL);
9968       g_signal_emit (tree_view, tree_view_signals[CURSOR_CHANGED], 0);
9969       gtk_widget_grab_focus (GTK_WIDGET (tree_view));
9970     }
9971   else
9972     {
9973       gtk_widget_error_bell (GTK_WIDGET (tree_view));
9974     }
9975
9976   gtk_tree_view_clamp_column_visible (tree_view,
9977                                       tree_view->priv->focus_column, TRUE);
9978 }
9979
9980 static void
9981 gtk_tree_view_move_cursor_start_end (GtkTreeView *tree_view,
9982                                      gint         count)
9983 {
9984   GtkRBTree *cursor_tree;
9985   GtkRBNode *cursor_node;
9986   GtkTreePath *path;
9987   GtkTreePath *old_path;
9988
9989   if (!gtk_widget_has_focus (GTK_WIDGET (tree_view)))
9990     return;
9991
9992   g_return_if_fail (tree_view->priv->tree != NULL);
9993
9994   gtk_tree_view_get_cursor (tree_view, &old_path, NULL);
9995
9996   cursor_tree = tree_view->priv->tree;
9997   cursor_node = cursor_tree->root;
9998
9999   if (count == -1)
10000     {
10001       while (cursor_node && cursor_node->left != cursor_tree->nil)
10002         cursor_node = cursor_node->left;
10003
10004       /* Now go forward to find the first focusable row. */
10005       path = _gtk_tree_view_find_path (tree_view, cursor_tree, cursor_node);
10006       search_first_focusable_path (tree_view, &path,
10007                                    TRUE, &cursor_tree, &cursor_node);
10008     }
10009   else
10010     {
10011       do
10012         {
10013           while (cursor_node && cursor_node->right != cursor_tree->nil)
10014             cursor_node = cursor_node->right;
10015           if (cursor_node->children == NULL)
10016             break;
10017
10018           cursor_tree = cursor_node->children;
10019           cursor_node = cursor_tree->root;
10020         }
10021       while (1);
10022
10023       /* Now go backwards to find last focusable row. */
10024       path = _gtk_tree_view_find_path (tree_view, cursor_tree, cursor_node);
10025       search_first_focusable_path (tree_view, &path,
10026                                    FALSE, &cursor_tree, &cursor_node);
10027     }
10028
10029   if (!path)
10030     goto cleanup;
10031
10032   if (gtk_tree_path_compare (old_path, path))
10033     {
10034       gtk_tree_view_real_set_cursor (tree_view, path, TRUE, TRUE);
10035       gtk_widget_grab_focus (GTK_WIDGET (tree_view));
10036     }
10037   else
10038     {
10039       gtk_widget_error_bell (GTK_WIDGET (tree_view));
10040     }
10041
10042 cleanup:
10043   gtk_tree_path_free (old_path);
10044   gtk_tree_path_free (path);
10045 }
10046
10047 static gboolean
10048 gtk_tree_view_real_select_all (GtkTreeView *tree_view)
10049 {
10050   if (!gtk_widget_has_focus (GTK_WIDGET (tree_view)))
10051     return FALSE;
10052
10053   if (tree_view->priv->selection->type != GTK_SELECTION_MULTIPLE)
10054     return FALSE;
10055
10056   gtk_tree_selection_select_all (tree_view->priv->selection);
10057
10058   return TRUE;
10059 }
10060
10061 static gboolean
10062 gtk_tree_view_real_unselect_all (GtkTreeView *tree_view)
10063 {
10064   if (!gtk_widget_has_focus (GTK_WIDGET (tree_view)))
10065     return FALSE;
10066
10067   if (tree_view->priv->selection->type != GTK_SELECTION_MULTIPLE)
10068     return FALSE;
10069
10070   gtk_tree_selection_unselect_all (tree_view->priv->selection);
10071
10072   return TRUE;
10073 }
10074
10075 static gboolean
10076 gtk_tree_view_real_select_cursor_row (GtkTreeView *tree_view,
10077                                       gboolean     start_editing)
10078 {
10079   GtkRBTree *new_tree = NULL;
10080   GtkRBNode *new_node = NULL;
10081   GtkRBTree *cursor_tree = NULL;
10082   GtkRBNode *cursor_node = NULL;
10083   GtkTreePath *cursor_path = NULL;
10084   GtkTreeSelectMode mode = 0;
10085
10086   if (!gtk_widget_has_focus (GTK_WIDGET (tree_view)))
10087     return FALSE;
10088
10089   if (tree_view->priv->cursor)
10090     cursor_path = gtk_tree_row_reference_get_path (tree_view->priv->cursor);
10091
10092   if (cursor_path == NULL)
10093     return FALSE;
10094
10095   _gtk_tree_view_find_node (tree_view, cursor_path,
10096                             &cursor_tree, &cursor_node);
10097
10098   if (cursor_tree == NULL)
10099     {
10100       gtk_tree_path_free (cursor_path);
10101       return FALSE;
10102     }
10103
10104   if (!tree_view->priv->shift_pressed && start_editing &&
10105       tree_view->priv->focus_column)
10106     {
10107       if (gtk_tree_view_start_editing (tree_view, cursor_path))
10108         {
10109           gtk_tree_path_free (cursor_path);
10110           return TRUE;
10111         }
10112     }
10113
10114   if (tree_view->priv->ctrl_pressed)
10115     mode |= GTK_TREE_SELECT_MODE_TOGGLE;
10116   if (tree_view->priv->shift_pressed)
10117     mode |= GTK_TREE_SELECT_MODE_EXTEND;
10118
10119   _gtk_tree_selection_internal_select_node (tree_view->priv->selection,
10120                                             cursor_node,
10121                                             cursor_tree,
10122                                             cursor_path,
10123                                             mode,
10124                                             FALSE);
10125
10126   /* We bail out if the original (tree, node) don't exist anymore after
10127    * handling the selection-changed callback.  We do return TRUE because
10128    * the key press has been handled at this point.
10129    */
10130   _gtk_tree_view_find_node (tree_view, cursor_path, &new_tree, &new_node);
10131
10132   if (cursor_tree != new_tree || cursor_node != new_node)
10133     return FALSE;
10134
10135   gtk_tree_view_clamp_node_visible (tree_view, cursor_tree, cursor_node);
10136
10137   gtk_widget_grab_focus (GTK_WIDGET (tree_view));
10138   _gtk_tree_view_queue_draw_node (tree_view, cursor_tree, cursor_node, NULL);
10139
10140   if (!tree_view->priv->shift_pressed)
10141     gtk_tree_view_row_activated (tree_view, cursor_path,
10142                                  tree_view->priv->focus_column);
10143
10144   gtk_tree_path_free (cursor_path);
10145
10146   return TRUE;
10147 }
10148
10149 static gboolean
10150 gtk_tree_view_real_toggle_cursor_row (GtkTreeView *tree_view)
10151 {
10152   GtkRBTree *new_tree = NULL;
10153   GtkRBNode *new_node = NULL;
10154   GtkRBTree *cursor_tree = NULL;
10155   GtkRBNode *cursor_node = NULL;
10156   GtkTreePath *cursor_path = NULL;
10157
10158   if (!gtk_widget_has_focus (GTK_WIDGET (tree_view)))
10159     return FALSE;
10160
10161   cursor_path = NULL;
10162   if (tree_view->priv->cursor)
10163     cursor_path = gtk_tree_row_reference_get_path (tree_view->priv->cursor);
10164
10165   if (cursor_path == NULL)
10166     return FALSE;
10167
10168   _gtk_tree_view_find_node (tree_view, cursor_path,
10169                             &cursor_tree, &cursor_node);
10170   if (cursor_tree == NULL)
10171     {
10172       gtk_tree_path_free (cursor_path);
10173       return FALSE;
10174     }
10175
10176   _gtk_tree_selection_internal_select_node (tree_view->priv->selection,
10177                                             cursor_node,
10178                                             cursor_tree,
10179                                             cursor_path,
10180                                             GTK_TREE_SELECT_MODE_TOGGLE,
10181                                             FALSE);
10182
10183   /* We bail out if the original (tree, node) don't exist anymore after
10184    * handling the selection-changed callback.  We do return TRUE because
10185    * the key press has been handled at this point.
10186    */
10187   _gtk_tree_view_find_node (tree_view, cursor_path, &new_tree, &new_node);
10188
10189   if (cursor_tree != new_tree || cursor_node != new_node)
10190     return FALSE;
10191
10192   gtk_tree_view_clamp_node_visible (tree_view, cursor_tree, cursor_node);
10193
10194   gtk_widget_grab_focus (GTK_WIDGET (tree_view));
10195   gtk_tree_view_queue_draw_path (tree_view, cursor_path, NULL);
10196   gtk_tree_path_free (cursor_path);
10197
10198   return TRUE;
10199 }
10200
10201 static gboolean
10202 gtk_tree_view_real_expand_collapse_cursor_row (GtkTreeView *tree_view,
10203                                                gboolean     logical,
10204                                                gboolean     expand,
10205                                                gboolean     open_all)
10206 {
10207   GtkTreePath *cursor_path = NULL;
10208   GtkRBTree *tree;
10209   GtkRBNode *node;
10210
10211   if (!gtk_widget_has_focus (GTK_WIDGET (tree_view)))
10212     return FALSE;
10213
10214   cursor_path = NULL;
10215   if (tree_view->priv->cursor)
10216     cursor_path = gtk_tree_row_reference_get_path (tree_view->priv->cursor);
10217
10218   if (cursor_path == NULL)
10219     return FALSE;
10220
10221   if (_gtk_tree_view_find_node (tree_view, cursor_path, &tree, &node))
10222     return FALSE;
10223
10224   /* Don't handle the event if we aren't an expander */
10225   if (!((node->flags & GTK_RBNODE_IS_PARENT) == GTK_RBNODE_IS_PARENT))
10226     return FALSE;
10227
10228   if (!logical
10229       && gtk_widget_get_direction (GTK_WIDGET (tree_view)) == GTK_TEXT_DIR_RTL)
10230     expand = !expand;
10231
10232   if (expand)
10233     gtk_tree_view_real_expand_row (tree_view, cursor_path, tree, node, open_all, TRUE);
10234   else
10235     gtk_tree_view_real_collapse_row (tree_view, cursor_path, tree, node, TRUE);
10236
10237   gtk_tree_path_free (cursor_path);
10238
10239   return TRUE;
10240 }
10241
10242 static gboolean
10243 gtk_tree_view_real_select_cursor_parent (GtkTreeView *tree_view)
10244 {
10245   GtkRBTree *cursor_tree = NULL;
10246   GtkRBNode *cursor_node = NULL;
10247   GtkTreePath *cursor_path = NULL;
10248   GdkModifierType state;
10249
10250   if (!gtk_widget_has_focus (GTK_WIDGET (tree_view)))
10251     goto out;
10252
10253   cursor_path = NULL;
10254   if (tree_view->priv->cursor)
10255     cursor_path = gtk_tree_row_reference_get_path (tree_view->priv->cursor);
10256
10257   if (cursor_path == NULL)
10258     goto out;
10259
10260   _gtk_tree_view_find_node (tree_view, cursor_path,
10261                             &cursor_tree, &cursor_node);
10262   if (cursor_tree == NULL)
10263     {
10264       gtk_tree_path_free (cursor_path);
10265       goto out;
10266     }
10267
10268   if (cursor_tree->parent_node)
10269     {
10270       gtk_tree_view_queue_draw_path (tree_view, cursor_path, NULL);
10271       cursor_node = cursor_tree->parent_node;
10272       cursor_tree = cursor_tree->parent_tree;
10273
10274       gtk_tree_path_up (cursor_path);
10275
10276       if (gtk_get_current_event_state (&state))
10277         {
10278           if ((state & GDK_CONTROL_MASK) == GDK_CONTROL_MASK)
10279             tree_view->priv->ctrl_pressed = TRUE;
10280         }
10281
10282       gtk_tree_view_real_set_cursor (tree_view, cursor_path, TRUE, FALSE);
10283       gtk_tree_view_clamp_node_visible (tree_view, cursor_tree, cursor_node);
10284
10285       gtk_widget_grab_focus (GTK_WIDGET (tree_view));
10286       gtk_tree_view_queue_draw_path (tree_view, cursor_path, NULL);
10287       gtk_tree_path_free (cursor_path);
10288
10289       tree_view->priv->ctrl_pressed = FALSE;
10290
10291       return TRUE;
10292     }
10293
10294  out:
10295
10296   tree_view->priv->search_entry_avoid_unhandled_binding = TRUE;
10297   return FALSE;
10298 }
10299
10300 static gboolean
10301 gtk_tree_view_search_entry_flush_timeout (GtkTreeView *tree_view)
10302 {
10303   gtk_tree_view_search_dialog_hide (tree_view->priv->search_window, tree_view);
10304   tree_view->priv->typeselect_flush_timeout = 0;
10305
10306   return FALSE;
10307 }
10308
10309 /* Cut and paste from gtkwindow.c */
10310 static void
10311 send_focus_change (GtkWidget *widget,
10312                    gboolean   in)
10313 {
10314   GdkEvent *fevent = gdk_event_new (GDK_FOCUS_CHANGE);
10315
10316   g_object_ref (widget);
10317
10318  if (in)
10319     GTK_WIDGET_SET_FLAGS (widget, GTK_HAS_FOCUS);
10320   else
10321     GTK_WIDGET_UNSET_FLAGS (widget, GTK_HAS_FOCUS);
10322
10323   fevent->focus_change.type = GDK_FOCUS_CHANGE;
10324   fevent->focus_change.window = g_object_ref (widget->window);
10325   fevent->focus_change.in = in;
10326
10327   gtk_widget_event (widget, fevent);
10328
10329   g_object_notify (G_OBJECT (widget), "has-focus");
10330
10331   g_object_unref (widget);
10332   gdk_event_free (fevent);
10333 }
10334
10335 static void
10336 gtk_tree_view_ensure_interactive_directory (GtkTreeView *tree_view)
10337 {
10338   GtkWidget *frame, *vbox, *toplevel;
10339   GdkScreen *screen;
10340
10341   if (tree_view->priv->search_custom_entry_set)
10342     return;
10343
10344   toplevel = gtk_widget_get_toplevel (GTK_WIDGET (tree_view));
10345   screen = gtk_widget_get_screen (GTK_WIDGET (tree_view));
10346
10347    if (tree_view->priv->search_window != NULL)
10348      {
10349        if (GTK_WINDOW (toplevel)->group)
10350          gtk_window_group_add_window (GTK_WINDOW (toplevel)->group,
10351                                       GTK_WINDOW (tree_view->priv->search_window));
10352        else if (GTK_WINDOW (tree_view->priv->search_window)->group)
10353          gtk_window_group_remove_window (GTK_WINDOW (tree_view->priv->search_window)->group,
10354                                          GTK_WINDOW (tree_view->priv->search_window));
10355        gtk_window_set_screen (GTK_WINDOW (tree_view->priv->search_window), screen);
10356        return;
10357      }
10358
10359   tree_view->priv->search_window = gtk_window_new (GTK_WINDOW_POPUP);
10360   gtk_window_set_screen (GTK_WINDOW (tree_view->priv->search_window), screen);
10361
10362   if (GTK_WINDOW (toplevel)->group)
10363     gtk_window_group_add_window (GTK_WINDOW (toplevel)->group,
10364                                  GTK_WINDOW (tree_view->priv->search_window));
10365
10366   gtk_window_set_type_hint (GTK_WINDOW (tree_view->priv->search_window),
10367                             GDK_WINDOW_TYPE_HINT_UTILITY);
10368   gtk_window_set_modal (GTK_WINDOW (tree_view->priv->search_window), TRUE);
10369   g_signal_connect (tree_view->priv->search_window, "delete-event",
10370                     G_CALLBACK (gtk_tree_view_search_delete_event),
10371                     tree_view);
10372   g_signal_connect (tree_view->priv->search_window, "key-press-event",
10373                     G_CALLBACK (gtk_tree_view_search_key_press_event),
10374                     tree_view);
10375   g_signal_connect (tree_view->priv->search_window, "button-press-event",
10376                     G_CALLBACK (gtk_tree_view_search_button_press_event),
10377                     tree_view);
10378   g_signal_connect (tree_view->priv->search_window, "scroll-event",
10379                     G_CALLBACK (gtk_tree_view_search_scroll_event),
10380                     tree_view);
10381
10382   frame = gtk_frame_new (NULL);
10383   gtk_frame_set_shadow_type (GTK_FRAME (frame), GTK_SHADOW_ETCHED_IN);
10384   gtk_widget_show (frame);
10385   gtk_container_add (GTK_CONTAINER (tree_view->priv->search_window), frame);
10386
10387   vbox = gtk_vbox_new (FALSE, 0);
10388   gtk_widget_show (vbox);
10389   gtk_container_add (GTK_CONTAINER (frame), vbox);
10390   gtk_container_set_border_width (GTK_CONTAINER (vbox), 3);
10391
10392   /* add entry */
10393   tree_view->priv->search_entry = gtk_entry_new ();
10394   gtk_widget_show (tree_view->priv->search_entry);
10395   g_signal_connect (tree_view->priv->search_entry, "populate-popup",
10396                     G_CALLBACK (gtk_tree_view_search_disable_popdown),
10397                     tree_view);
10398   g_signal_connect (tree_view->priv->search_entry,
10399                     "activate", G_CALLBACK (gtk_tree_view_search_activate),
10400                     tree_view);
10401   g_signal_connect (GTK_ENTRY (tree_view->priv->search_entry)->im_context,
10402                     "preedit-changed",
10403                     G_CALLBACK (gtk_tree_view_search_preedit_changed),
10404                     tree_view);
10405   gtk_container_add (GTK_CONTAINER (vbox),
10406                      tree_view->priv->search_entry);
10407
10408   gtk_widget_realize (tree_view->priv->search_entry);
10409 }
10410
10411 /* Pops up the interactive search entry.  If keybinding is TRUE then the user
10412  * started this by typing the start_interactive_search keybinding.  Otherwise, it came from
10413  */
10414 static gboolean
10415 gtk_tree_view_real_start_interactive_search (GtkTreeView *tree_view,
10416                                              gboolean     keybinding)
10417 {
10418   /* We only start interactive search if we have focus or the columns
10419    * have focus.  If one of our children have focus, we don't want to
10420    * start the search.
10421    */
10422   GList *list;
10423   gboolean found_focus = FALSE;
10424   GtkWidgetClass *entry_parent_class;
10425
10426   if (!tree_view->priv->enable_search && !keybinding)
10427     return FALSE;
10428
10429   if (tree_view->priv->search_custom_entry_set)
10430     return FALSE;
10431
10432   if (tree_view->priv->search_window != NULL &&
10433       gtk_widget_get_visible (tree_view->priv->search_window))
10434     return TRUE;
10435
10436   for (list = tree_view->priv->columns; list; list = list->next)
10437     {
10438       GtkTreeViewColumn *column;
10439
10440       column = list->data;
10441       if (! column->visible)
10442         continue;
10443
10444       if (gtk_widget_has_focus (column->button))
10445         {
10446           found_focus = TRUE;
10447           break;
10448         }
10449     }
10450
10451   if (gtk_widget_has_focus (GTK_WIDGET (tree_view)))
10452     found_focus = TRUE;
10453
10454   if (!found_focus)
10455     return FALSE;
10456
10457   if (tree_view->priv->search_column < 0)
10458     return FALSE;
10459
10460   gtk_tree_view_ensure_interactive_directory (tree_view);
10461
10462   if (keybinding)
10463     gtk_entry_set_text (GTK_ENTRY (tree_view->priv->search_entry), "");
10464
10465   /* done, show it */
10466   tree_view->priv->search_position_func (tree_view, tree_view->priv->search_window, tree_view->priv->search_position_user_data);
10467   gtk_widget_show (tree_view->priv->search_window);
10468   if (tree_view->priv->search_entry_changed_id == 0)
10469     {
10470       tree_view->priv->search_entry_changed_id =
10471         g_signal_connect (tree_view->priv->search_entry, "changed",
10472                           G_CALLBACK (gtk_tree_view_search_init),
10473                           tree_view);
10474     }
10475
10476   tree_view->priv->typeselect_flush_timeout =
10477     gdk_threads_add_timeout (GTK_TREE_VIEW_SEARCH_DIALOG_TIMEOUT,
10478                    (GSourceFunc) gtk_tree_view_search_entry_flush_timeout,
10479                    tree_view);
10480
10481   /* Grab focus will select all the text.  We don't want that to happen, so we
10482    * call the parent instance and bypass the selection change.  This is probably
10483    * really non-kosher. */
10484   entry_parent_class = g_type_class_peek_parent (GTK_ENTRY_GET_CLASS (tree_view->priv->search_entry));
10485   (entry_parent_class->grab_focus) (tree_view->priv->search_entry);
10486
10487   /* send focus-in event */
10488   send_focus_change (tree_view->priv->search_entry, TRUE);
10489
10490   /* search first matching iter */
10491   gtk_tree_view_search_init (tree_view->priv->search_entry, tree_view);
10492
10493   return TRUE;
10494 }
10495
10496 static gboolean
10497 gtk_tree_view_start_interactive_search (GtkTreeView *tree_view)
10498 {
10499   return gtk_tree_view_real_start_interactive_search (tree_view, TRUE);
10500 }
10501
10502 /* this function returns the new width of the column being resized given
10503  * the column and x position of the cursor; the x cursor position is passed
10504  * in as a pointer and automagicly corrected if it's beyond min/max limits
10505  */
10506 static gint
10507 gtk_tree_view_new_column_width (GtkTreeView *tree_view,
10508                                 gint       i,
10509                                 gint      *x)
10510 {
10511   GtkTreeViewColumn *column;
10512   gint width;
10513   gboolean rtl;
10514
10515   /* first translate the x position from widget->window
10516    * to clist->clist_window
10517    */
10518   rtl = (gtk_widget_get_direction (GTK_WIDGET (tree_view)) == GTK_TEXT_DIR_RTL);
10519   column = g_list_nth (tree_view->priv->columns, i)->data;
10520   width = rtl ? (column->button->allocation.x + column->button->allocation.width - *x) : (*x - column->button->allocation.x);
10521
10522   /* Clamp down the value */
10523   if (column->min_width == -1)
10524     width = MAX (column->button->requisition.width,
10525                  width);
10526   else
10527     width = MAX (column->min_width,
10528                  width);
10529   if (column->max_width != -1)
10530     width = MIN (width, column->max_width);
10531
10532   *x = rtl ? (column->button->allocation.x + column->button->allocation.width - width) : (column->button->allocation.x + width);
10533
10534   return width;
10535 }
10536
10537
10538 /* FIXME this adjust_allocation is a big cut-and-paste from
10539  * GtkCList, needs to be some "official" way to do this
10540  * factored out.
10541  */
10542 typedef struct
10543 {
10544   GdkWindow *window;
10545   int dx;
10546   int dy;
10547 } ScrollData;
10548
10549 /* The window to which widget->window is relative */
10550 #define ALLOCATION_WINDOW(widget)               \
10551    (!gtk_widget_get_has_window (widget) ?               \
10552     (widget)->window :                          \
10553      gdk_window_get_parent ((widget)->window))
10554
10555 static void
10556 adjust_allocation_recurse (GtkWidget *widget,
10557                            gpointer   data)
10558 {
10559   ScrollData *scroll_data = data;
10560
10561   /* Need to really size allocate instead of just poking
10562    * into widget->allocation if the widget is not realized.
10563    * FIXME someone figure out why this was.
10564    */
10565   if (!gtk_widget_get_realized (widget))
10566     {
10567       if (gtk_widget_get_visible (widget))
10568         {
10569           GdkRectangle tmp_rectangle = widget->allocation;
10570           tmp_rectangle.x += scroll_data->dx;
10571           tmp_rectangle.y += scroll_data->dy;
10572
10573           gtk_widget_size_allocate (widget, &tmp_rectangle);
10574         }
10575     }
10576   else
10577     {
10578       if (ALLOCATION_WINDOW (widget) == scroll_data->window)
10579         {
10580           widget->allocation.x += scroll_data->dx;
10581           widget->allocation.y += scroll_data->dy;
10582
10583           if (GTK_IS_CONTAINER (widget))
10584             gtk_container_forall (GTK_CONTAINER (widget),
10585                                   adjust_allocation_recurse,
10586                                   data);
10587         }
10588     }
10589 }
10590
10591 static void
10592 adjust_allocation (GtkWidget *widget,
10593                    int        dx,
10594                    int        dy)
10595 {
10596   ScrollData scroll_data;
10597
10598   if (gtk_widget_get_realized (widget))
10599     scroll_data.window = ALLOCATION_WINDOW (widget);
10600   else
10601     scroll_data.window = NULL;
10602
10603   scroll_data.dx = dx;
10604   scroll_data.dy = dy;
10605
10606   adjust_allocation_recurse (widget, &scroll_data);
10607 }
10608
10609 /* Callbacks */
10610 static void
10611 gtk_tree_view_adjustment_changed (GtkAdjustment *adjustment,
10612                                   GtkTreeView   *tree_view)
10613 {
10614   if (gtk_widget_get_realized (GTK_WIDGET (tree_view)))
10615     {
10616       gint dy;
10617
10618       gdk_window_move (tree_view->priv->bin_window,
10619                        - tree_view->priv->hadjustment->value,
10620                        TREE_VIEW_HEADER_HEIGHT (tree_view));
10621       gdk_window_move (tree_view->priv->header_window,
10622                        - tree_view->priv->hadjustment->value,
10623                        0);
10624       dy = tree_view->priv->dy - (int) tree_view->priv->vadjustment->value;
10625       if (dy)
10626         {
10627           update_prelight (tree_view,
10628                            tree_view->priv->event_last_x,
10629                            tree_view->priv->event_last_y - dy);
10630
10631           if (tree_view->priv->edited_column &&
10632               GTK_IS_WIDGET (tree_view->priv->edited_column->editable_widget))
10633             {
10634               GList *list;
10635               GtkWidget *widget;
10636               GtkTreeViewChild *child = NULL;
10637
10638               widget = GTK_WIDGET (tree_view->priv->edited_column->editable_widget);
10639               adjust_allocation (widget, 0, dy);
10640
10641               for (list = tree_view->priv->children; list; list = list->next)
10642                 {
10643                   child = (GtkTreeViewChild *)list->data;
10644                   if (child->widget == widget)
10645                     {
10646                       child->y += dy;
10647                       break;
10648                     }
10649                 }
10650             }
10651         }
10652       gdk_window_scroll (tree_view->priv->bin_window, 0, dy);
10653
10654       if (tree_view->priv->dy != (int) tree_view->priv->vadjustment->value)
10655         {
10656           /* update our dy and top_row */
10657           tree_view->priv->dy = (int) tree_view->priv->vadjustment->value;
10658
10659           if (!tree_view->priv->in_top_row_to_dy)
10660             gtk_tree_view_dy_to_top_row (tree_view);
10661         }
10662
10663       gdk_window_process_updates (tree_view->priv->header_window, TRUE);
10664       gdk_window_process_updates (tree_view->priv->bin_window, TRUE);
10665     }
10666 }
10667
10668 \f
10669
10670 /* Public methods
10671  */
10672
10673 /**
10674  * gtk_tree_view_new:
10675  *
10676  * Creates a new #GtkTreeView widget.
10677  *
10678  * Return value: A newly created #GtkTreeView widget.
10679  **/
10680 GtkWidget *
10681 gtk_tree_view_new (void)
10682 {
10683   return g_object_new (GTK_TYPE_TREE_VIEW, NULL);
10684 }
10685
10686 /**
10687  * gtk_tree_view_new_with_model:
10688  * @model: the model.
10689  *
10690  * Creates a new #GtkTreeView widget with the model initialized to @model.
10691  *
10692  * Return value: A newly created #GtkTreeView widget.
10693  **/
10694 GtkWidget *
10695 gtk_tree_view_new_with_model (GtkTreeModel *model)
10696 {
10697   return g_object_new (GTK_TYPE_TREE_VIEW, "model", model, NULL);
10698 }
10699
10700 /* Public Accessors
10701  */
10702
10703 /**
10704  * gtk_tree_view_get_model:
10705  * @tree_view: a #GtkTreeView
10706  *
10707  * Returns the model the #GtkTreeView is based on.  Returns %NULL if the
10708  * model is unset.
10709  *
10710  * Return value: A #GtkTreeModel, or %NULL if none is currently being used.
10711  **/
10712 GtkTreeModel *
10713 gtk_tree_view_get_model (GtkTreeView *tree_view)
10714 {
10715   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), NULL);
10716
10717   return tree_view->priv->model;
10718 }
10719
10720 /**
10721  * gtk_tree_view_set_model:
10722  * @tree_view: A #GtkTreeNode.
10723  * @model: (allow-none): The model.
10724  *
10725  * Sets the model for a #GtkTreeView.  If the @tree_view already has a model
10726  * set, it will remove it before setting the new model.  If @model is %NULL,
10727  * then it will unset the old model.
10728  **/
10729 void
10730 gtk_tree_view_set_model (GtkTreeView  *tree_view,
10731                          GtkTreeModel *model)
10732 {
10733   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
10734   g_return_if_fail (model == NULL || GTK_IS_TREE_MODEL (model));
10735
10736   if (model == tree_view->priv->model)
10737     return;
10738
10739   if (tree_view->priv->scroll_to_path)
10740     {
10741       gtk_tree_row_reference_free (tree_view->priv->scroll_to_path);
10742       tree_view->priv->scroll_to_path = NULL;
10743     }
10744
10745   if (tree_view->priv->model)
10746     {
10747       GList *tmplist = tree_view->priv->columns;
10748
10749       gtk_tree_view_unref_and_check_selection_tree (tree_view, tree_view->priv->tree);
10750       gtk_tree_view_stop_editing (tree_view, TRUE);
10751
10752       remove_expand_collapse_timeout (tree_view);
10753
10754       g_signal_handlers_disconnect_by_func (tree_view->priv->model,
10755                                             gtk_tree_view_row_changed,
10756                                             tree_view);
10757       g_signal_handlers_disconnect_by_func (tree_view->priv->model,
10758                                             gtk_tree_view_row_inserted,
10759                                             tree_view);
10760       g_signal_handlers_disconnect_by_func (tree_view->priv->model,
10761                                             gtk_tree_view_row_has_child_toggled,
10762                                             tree_view);
10763       g_signal_handlers_disconnect_by_func (tree_view->priv->model,
10764                                             gtk_tree_view_row_deleted,
10765                                             tree_view);
10766       g_signal_handlers_disconnect_by_func (tree_view->priv->model,
10767                                             gtk_tree_view_rows_reordered,
10768                                             tree_view);
10769
10770       for (; tmplist; tmplist = tmplist->next)
10771         _gtk_tree_view_column_unset_model (tmplist->data,
10772                                            tree_view->priv->model);
10773
10774       if (tree_view->priv->tree)
10775         gtk_tree_view_free_rbtree (tree_view);
10776
10777       gtk_tree_row_reference_free (tree_view->priv->drag_dest_row);
10778       tree_view->priv->drag_dest_row = NULL;
10779       gtk_tree_row_reference_free (tree_view->priv->cursor);
10780       tree_view->priv->cursor = NULL;
10781       gtk_tree_row_reference_free (tree_view->priv->anchor);
10782       tree_view->priv->anchor = NULL;
10783       gtk_tree_row_reference_free (tree_view->priv->top_row);
10784       tree_view->priv->top_row = NULL;
10785       gtk_tree_row_reference_free (tree_view->priv->scroll_to_path);
10786       tree_view->priv->scroll_to_path = NULL;
10787
10788       tree_view->priv->scroll_to_column = NULL;
10789
10790       g_object_unref (tree_view->priv->model);
10791
10792       tree_view->priv->search_column = -1;
10793       tree_view->priv->fixed_height_check = 0;
10794       tree_view->priv->fixed_height = -1;
10795       tree_view->priv->dy = tree_view->priv->top_row_dy = 0;
10796       tree_view->priv->last_button_x = -1;
10797       tree_view->priv->last_button_y = -1;
10798     }
10799
10800   tree_view->priv->model = model;
10801
10802   if (tree_view->priv->model)
10803     {
10804       gint i;
10805       GtkTreePath *path;
10806       GtkTreeIter iter;
10807       GtkTreeModelFlags flags;
10808
10809       if (tree_view->priv->search_column == -1)
10810         {
10811           for (i = 0; i < gtk_tree_model_get_n_columns (model); i++)
10812             {
10813               GType type = gtk_tree_model_get_column_type (model, i);
10814
10815               if (g_value_type_transformable (type, G_TYPE_STRING))
10816                 {
10817                   tree_view->priv->search_column = i;
10818                   break;
10819                 }
10820             }
10821         }
10822
10823       g_object_ref (tree_view->priv->model);
10824       g_signal_connect (tree_view->priv->model,
10825                         "row-changed",
10826                         G_CALLBACK (gtk_tree_view_row_changed),
10827                         tree_view);
10828       g_signal_connect (tree_view->priv->model,
10829                         "row-inserted",
10830                         G_CALLBACK (gtk_tree_view_row_inserted),
10831                         tree_view);
10832       g_signal_connect (tree_view->priv->model,
10833                         "row-has-child-toggled",
10834                         G_CALLBACK (gtk_tree_view_row_has_child_toggled),
10835                         tree_view);
10836       g_signal_connect (tree_view->priv->model,
10837                         "row-deleted",
10838                         G_CALLBACK (gtk_tree_view_row_deleted),
10839                         tree_view);
10840       g_signal_connect (tree_view->priv->model,
10841                         "rows-reordered",
10842                         G_CALLBACK (gtk_tree_view_rows_reordered),
10843                         tree_view);
10844
10845       flags = gtk_tree_model_get_flags (tree_view->priv->model);
10846       if ((flags & GTK_TREE_MODEL_LIST_ONLY) == GTK_TREE_MODEL_LIST_ONLY)
10847         GTK_TREE_VIEW_SET_FLAG (tree_view, GTK_TREE_VIEW_IS_LIST);
10848       else
10849         GTK_TREE_VIEW_UNSET_FLAG (tree_view, GTK_TREE_VIEW_IS_LIST);
10850
10851       path = gtk_tree_path_new_first ();
10852       if (gtk_tree_model_get_iter (tree_view->priv->model, &iter, path))
10853         {
10854           tree_view->priv->tree = _gtk_rbtree_new ();
10855           gtk_tree_view_build_tree (tree_view, tree_view->priv->tree, &iter, 1, FALSE);
10856         }
10857       gtk_tree_path_free (path);
10858
10859       /*  FIXME: do I need to do this? gtk_tree_view_create_buttons (tree_view); */
10860       install_presize_handler (tree_view);
10861     }
10862
10863   g_object_notify (G_OBJECT (tree_view), "model");
10864
10865   if (tree_view->priv->selection)
10866   _gtk_tree_selection_emit_changed (tree_view->priv->selection);
10867
10868   if (gtk_widget_get_realized (GTK_WIDGET (tree_view)))
10869     gtk_widget_queue_resize (GTK_WIDGET (tree_view));
10870 }
10871
10872 /**
10873  * gtk_tree_view_get_selection:
10874  * @tree_view: A #GtkTreeView.
10875  *
10876  * Gets the #GtkTreeSelection associated with @tree_view.
10877  *
10878  * Return value: A #GtkTreeSelection object.
10879  **/
10880 GtkTreeSelection *
10881 gtk_tree_view_get_selection (GtkTreeView *tree_view)
10882 {
10883   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), NULL);
10884
10885   return tree_view->priv->selection;
10886 }
10887
10888 /**
10889  * gtk_tree_view_get_hadjustment:
10890  * @tree_view: A #GtkTreeView
10891  *
10892  * Gets the #GtkAdjustment currently being used for the horizontal aspect.
10893  *
10894  * Return value: A #GtkAdjustment object, or %NULL if none is currently being
10895  * used.
10896  **/
10897 GtkAdjustment *
10898 gtk_tree_view_get_hadjustment (GtkTreeView *tree_view)
10899 {
10900   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), NULL);
10901
10902   if (tree_view->priv->hadjustment == NULL)
10903     gtk_tree_view_set_hadjustment (tree_view, NULL);
10904
10905   return tree_view->priv->hadjustment;
10906 }
10907
10908 /**
10909  * gtk_tree_view_set_hadjustment:
10910  * @tree_view: A #GtkTreeView
10911  * @adjustment: (allow-none): The #GtkAdjustment to set, or %NULL
10912  *
10913  * Sets the #GtkAdjustment for the current horizontal aspect.
10914  **/
10915 void
10916 gtk_tree_view_set_hadjustment (GtkTreeView   *tree_view,
10917                                GtkAdjustment *adjustment)
10918 {
10919   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
10920
10921   gtk_tree_view_set_adjustments (tree_view,
10922                                  adjustment,
10923                                  tree_view->priv->vadjustment);
10924
10925   g_object_notify (G_OBJECT (tree_view), "hadjustment");
10926 }
10927
10928 /**
10929  * gtk_tree_view_get_vadjustment:
10930  * @tree_view: A #GtkTreeView
10931  *
10932  * Gets the #GtkAdjustment currently being used for the vertical aspect.
10933  *
10934  * Return value: A #GtkAdjustment object, or %NULL if none is currently being
10935  * used.
10936  **/
10937 GtkAdjustment *
10938 gtk_tree_view_get_vadjustment (GtkTreeView *tree_view)
10939 {
10940   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), NULL);
10941
10942   if (tree_view->priv->vadjustment == NULL)
10943     gtk_tree_view_set_vadjustment (tree_view, NULL);
10944
10945   return tree_view->priv->vadjustment;
10946 }
10947
10948 /**
10949  * gtk_tree_view_set_vadjustment:
10950  * @tree_view: A #GtkTreeView
10951  * @adjustment: (allow-none): The #GtkAdjustment to set, or %NULL
10952  *
10953  * Sets the #GtkAdjustment for the current vertical aspect.
10954  **/
10955 void
10956 gtk_tree_view_set_vadjustment (GtkTreeView   *tree_view,
10957                                GtkAdjustment *adjustment)
10958 {
10959   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
10960
10961   gtk_tree_view_set_adjustments (tree_view,
10962                                  tree_view->priv->hadjustment,
10963                                  adjustment);
10964
10965   g_object_notify (G_OBJECT (tree_view), "vadjustment");
10966 }
10967
10968 /* Column and header operations */
10969
10970 /**
10971  * gtk_tree_view_get_headers_visible:
10972  * @tree_view: A #GtkTreeView.
10973  *
10974  * Returns %TRUE if the headers on the @tree_view are visible.
10975  *
10976  * Return value: Whether the headers are visible or not.
10977  **/
10978 gboolean
10979 gtk_tree_view_get_headers_visible (GtkTreeView *tree_view)
10980 {
10981   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), FALSE);
10982
10983   return GTK_TREE_VIEW_FLAG_SET (tree_view, GTK_TREE_VIEW_HEADERS_VISIBLE);
10984 }
10985
10986 /**
10987  * gtk_tree_view_set_headers_visible:
10988  * @tree_view: A #GtkTreeView.
10989  * @headers_visible: %TRUE if the headers are visible
10990  *
10991  * Sets the visibility state of the headers.
10992  **/
10993 void
10994 gtk_tree_view_set_headers_visible (GtkTreeView *tree_view,
10995                                    gboolean     headers_visible)
10996 {
10997   gint x, y;
10998   GList *list;
10999   GtkTreeViewColumn *column;
11000
11001   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
11002
11003   headers_visible = !! headers_visible;
11004
11005   if (GTK_TREE_VIEW_FLAG_SET (tree_view, GTK_TREE_VIEW_HEADERS_VISIBLE) == headers_visible)
11006     return;
11007
11008   if (headers_visible)
11009     GTK_TREE_VIEW_SET_FLAG (tree_view, GTK_TREE_VIEW_HEADERS_VISIBLE);
11010   else
11011     GTK_TREE_VIEW_UNSET_FLAG (tree_view, GTK_TREE_VIEW_HEADERS_VISIBLE);
11012
11013   if (gtk_widget_get_realized (GTK_WIDGET (tree_view)))
11014     {
11015       gdk_window_get_position (tree_view->priv->bin_window, &x, &y);
11016       if (headers_visible)
11017         {
11018           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));
11019
11020           if (gtk_widget_get_mapped (GTK_WIDGET (tree_view)))
11021             gtk_tree_view_map_buttons (tree_view);
11022         }
11023       else
11024         {
11025           gdk_window_move_resize (tree_view->priv->bin_window, x, y, tree_view->priv->width, tree_view->priv->height);
11026
11027           for (list = tree_view->priv->columns; list; list = list->next)
11028             {
11029               column = list->data;
11030               gtk_widget_unmap (column->button);
11031             }
11032           gdk_window_hide (tree_view->priv->header_window);
11033         }
11034     }
11035
11036   tree_view->priv->vadjustment->page_size = GTK_WIDGET (tree_view)->allocation.height - TREE_VIEW_HEADER_HEIGHT (tree_view);
11037   tree_view->priv->vadjustment->page_increment = (GTK_WIDGET (tree_view)->allocation.height - TREE_VIEW_HEADER_HEIGHT (tree_view)) / 2;
11038   tree_view->priv->vadjustment->lower = 0;
11039   tree_view->priv->vadjustment->upper = tree_view->priv->height;
11040   gtk_adjustment_changed (tree_view->priv->vadjustment);
11041
11042   gtk_widget_queue_resize (GTK_WIDGET (tree_view));
11043
11044   g_object_notify (G_OBJECT (tree_view), "headers-visible");
11045 }
11046
11047 /**
11048  * gtk_tree_view_columns_autosize:
11049  * @tree_view: A #GtkTreeView.
11050  *
11051  * Resizes all columns to their optimal width. Only works after the
11052  * treeview has been realized.
11053  **/
11054 void
11055 gtk_tree_view_columns_autosize (GtkTreeView *tree_view)
11056 {
11057   gboolean dirty = FALSE;
11058   GList *list;
11059   GtkTreeViewColumn *column;
11060
11061   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
11062
11063   for (list = tree_view->priv->columns; list; list = list->next)
11064     {
11065       column = list->data;
11066       if (column->column_type == GTK_TREE_VIEW_COLUMN_AUTOSIZE)
11067         continue;
11068       _gtk_tree_view_column_cell_set_dirty (column, TRUE);
11069       dirty = TRUE;
11070     }
11071
11072   if (dirty)
11073     gtk_widget_queue_resize (GTK_WIDGET (tree_view));
11074 }
11075
11076 /**
11077  * gtk_tree_view_set_headers_clickable:
11078  * @tree_view: A #GtkTreeView.
11079  * @setting: %TRUE if the columns are clickable.
11080  *
11081  * Allow the column title buttons to be clicked.
11082  **/
11083 void
11084 gtk_tree_view_set_headers_clickable (GtkTreeView *tree_view,
11085                                      gboolean   setting)
11086 {
11087   GList *list;
11088
11089   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
11090
11091   for (list = tree_view->priv->columns; list; list = list->next)
11092     gtk_tree_view_column_set_clickable (GTK_TREE_VIEW_COLUMN (list->data), setting);
11093
11094   g_object_notify (G_OBJECT (tree_view), "headers-clickable");
11095 }
11096
11097
11098 /**
11099  * gtk_tree_view_get_headers_clickable:
11100  * @tree_view: A #GtkTreeView.
11101  *
11102  * Returns whether all header columns are clickable.
11103  *
11104  * Return value: %TRUE if all header columns are clickable, otherwise %FALSE
11105  *
11106  * Since: 2.10
11107  **/
11108 gboolean
11109 gtk_tree_view_get_headers_clickable (GtkTreeView *tree_view)
11110 {
11111   GList *list;
11112
11113   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), FALSE);
11114
11115   for (list = tree_view->priv->columns; list; list = list->next)
11116     if (!GTK_TREE_VIEW_COLUMN (list->data)->clickable)
11117       return FALSE;
11118
11119   return TRUE;
11120 }
11121
11122 /**
11123  * gtk_tree_view_set_rules_hint
11124  * @tree_view: a #GtkTreeView
11125  * @setting: %TRUE if the tree requires reading across rows
11126  *
11127  * This function tells GTK+ that the user interface for your
11128  * application requires users to read across tree rows and associate
11129  * cells with one another. By default, GTK+ will then render the tree
11130  * with alternating row colors. Do <emphasis>not</emphasis> use it
11131  * just because you prefer the appearance of the ruled tree; that's a
11132  * question for the theme. Some themes will draw tree rows in
11133  * alternating colors even when rules are turned off, and users who
11134  * prefer that appearance all the time can choose those themes. You
11135  * should call this function only as a <emphasis>semantic</emphasis>
11136  * hint to the theme engine that your tree makes alternating colors
11137  * useful from a functional standpoint (since it has lots of columns,
11138  * generally).
11139  *
11140  **/
11141 void
11142 gtk_tree_view_set_rules_hint (GtkTreeView  *tree_view,
11143                               gboolean      setting)
11144 {
11145   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
11146
11147   setting = setting != FALSE;
11148
11149   if (tree_view->priv->has_rules != setting)
11150     {
11151       tree_view->priv->has_rules = setting;
11152       gtk_widget_queue_draw (GTK_WIDGET (tree_view));
11153     }
11154
11155   g_object_notify (G_OBJECT (tree_view), "rules-hint");
11156 }
11157
11158 /**
11159  * gtk_tree_view_get_rules_hint
11160  * @tree_view: a #GtkTreeView
11161  *
11162  * Gets the setting set by gtk_tree_view_set_rules_hint().
11163  *
11164  * Return value: %TRUE if rules are useful for the user of this tree
11165  **/
11166 gboolean
11167 gtk_tree_view_get_rules_hint (GtkTreeView  *tree_view)
11168 {
11169   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), FALSE);
11170
11171   return tree_view->priv->has_rules;
11172 }
11173
11174 /* Public Column functions
11175  */
11176
11177 /**
11178  * gtk_tree_view_append_column:
11179  * @tree_view: A #GtkTreeView.
11180  * @column: The #GtkTreeViewColumn to add.
11181  *
11182  * Appends @column to the list of columns. If @tree_view has "fixed_height"
11183  * mode enabled, then @column must have its "sizing" property set to be
11184  * GTK_TREE_VIEW_COLUMN_FIXED.
11185  *
11186  * Return value: The number of columns in @tree_view after appending.
11187  **/
11188 gint
11189 gtk_tree_view_append_column (GtkTreeView       *tree_view,
11190                              GtkTreeViewColumn *column)
11191 {
11192   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), -1);
11193   g_return_val_if_fail (GTK_IS_TREE_VIEW_COLUMN (column), -1);
11194   g_return_val_if_fail (column->tree_view == NULL, -1);
11195
11196   return gtk_tree_view_insert_column (tree_view, column, -1);
11197 }
11198
11199
11200 /**
11201  * gtk_tree_view_remove_column:
11202  * @tree_view: A #GtkTreeView.
11203  * @column: The #GtkTreeViewColumn to remove.
11204  *
11205  * Removes @column from @tree_view.
11206  *
11207  * Return value: The number of columns in @tree_view after removing.
11208  **/
11209 gint
11210 gtk_tree_view_remove_column (GtkTreeView       *tree_view,
11211                              GtkTreeViewColumn *column)
11212 {
11213   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), -1);
11214   g_return_val_if_fail (GTK_IS_TREE_VIEW_COLUMN (column), -1);
11215   g_return_val_if_fail (column->tree_view == GTK_WIDGET (tree_view), -1);
11216
11217   if (tree_view->priv->focus_column == column)
11218     tree_view->priv->focus_column = NULL;
11219
11220   if (tree_view->priv->edited_column == column)
11221     {
11222       gtk_tree_view_stop_editing (tree_view, TRUE);
11223
11224       /* no need to, but just to be sure ... */
11225       tree_view->priv->edited_column = NULL;
11226     }
11227
11228   if (tree_view->priv->expander_column == column)
11229     tree_view->priv->expander_column = NULL;
11230
11231   g_signal_handlers_disconnect_by_func (column,
11232                                         G_CALLBACK (column_sizing_notify),
11233                                         tree_view);
11234
11235   _gtk_tree_view_column_unset_tree_view (column);
11236
11237   tree_view->priv->columns = g_list_remove (tree_view->priv->columns, column);
11238   tree_view->priv->n_columns--;
11239
11240   if (gtk_widget_get_realized (GTK_WIDGET (tree_view)))
11241     {
11242       GList *list;
11243
11244       _gtk_tree_view_column_unrealize_button (column);
11245       for (list = tree_view->priv->columns; list; list = list->next)
11246         {
11247           GtkTreeViewColumn *tmp_column;
11248
11249           tmp_column = GTK_TREE_VIEW_COLUMN (list->data);
11250           if (tmp_column->visible)
11251             _gtk_tree_view_column_cell_set_dirty (tmp_column, TRUE);
11252         }
11253
11254       if (tree_view->priv->n_columns == 0 &&
11255           gtk_tree_view_get_headers_visible (tree_view))
11256         gdk_window_hide (tree_view->priv->header_window);
11257
11258       gtk_widget_queue_resize (GTK_WIDGET (tree_view));
11259     }
11260
11261   g_object_unref (column);
11262   g_signal_emit (tree_view, tree_view_signals[COLUMNS_CHANGED], 0);
11263
11264   return tree_view->priv->n_columns;
11265 }
11266
11267 /**
11268  * gtk_tree_view_insert_column:
11269  * @tree_view: A #GtkTreeView.
11270  * @column: The #GtkTreeViewColumn to be inserted.
11271  * @position: The position to insert @column in.
11272  *
11273  * This inserts the @column into the @tree_view at @position.  If @position is
11274  * -1, then the column is inserted at the end. If @tree_view has
11275  * "fixed_height" mode enabled, then @column must have its "sizing" property
11276  * set to be GTK_TREE_VIEW_COLUMN_FIXED.
11277  *
11278  * Return value: The number of columns in @tree_view after insertion.
11279  **/
11280 gint
11281 gtk_tree_view_insert_column (GtkTreeView       *tree_view,
11282                              GtkTreeViewColumn *column,
11283                              gint               position)
11284 {
11285   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), -1);
11286   g_return_val_if_fail (GTK_IS_TREE_VIEW_COLUMN (column), -1);
11287   g_return_val_if_fail (column->tree_view == NULL, -1);
11288
11289   if (tree_view->priv->fixed_height_mode)
11290     g_return_val_if_fail (gtk_tree_view_column_get_sizing (column)
11291                           == GTK_TREE_VIEW_COLUMN_FIXED, -1);
11292
11293   g_object_ref_sink (column);
11294
11295   if (tree_view->priv->n_columns == 0 &&
11296       gtk_widget_get_realized (GTK_WIDGET (tree_view)) &&
11297       gtk_tree_view_get_headers_visible (tree_view))
11298     {
11299       gdk_window_show (tree_view->priv->header_window);
11300     }
11301
11302   g_signal_connect (column, "notify::sizing",
11303                     G_CALLBACK (column_sizing_notify), tree_view);
11304
11305   tree_view->priv->columns = g_list_insert (tree_view->priv->columns,
11306                                             column, position);
11307   tree_view->priv->n_columns++;
11308
11309   _gtk_tree_view_column_set_tree_view (column, tree_view);
11310
11311   if (gtk_widget_get_realized (GTK_WIDGET (tree_view)))
11312     {
11313       GList *list;
11314
11315       _gtk_tree_view_column_realize_button (column);
11316
11317       for (list = tree_view->priv->columns; list; list = list->next)
11318         {
11319           column = GTK_TREE_VIEW_COLUMN (list->data);
11320           if (column->visible)
11321             _gtk_tree_view_column_cell_set_dirty (column, TRUE);
11322         }
11323       gtk_widget_queue_resize (GTK_WIDGET (tree_view));
11324     }
11325
11326   g_signal_emit (tree_view, tree_view_signals[COLUMNS_CHANGED], 0);
11327
11328   return tree_view->priv->n_columns;
11329 }
11330
11331 /**
11332  * gtk_tree_view_insert_column_with_attributes:
11333  * @tree_view: A #GtkTreeView
11334  * @position: The position to insert the new column in.
11335  * @title: The title to set the header to.
11336  * @cell: The #GtkCellRenderer.
11337  * @Varargs: A %NULL-terminated list of attributes.
11338  *
11339  * Creates a new #GtkTreeViewColumn and inserts it into the @tree_view at
11340  * @position.  If @position is -1, then the newly created column is inserted at
11341  * the end.  The column is initialized with the attributes given. If @tree_view
11342  * has "fixed_height" mode enabled, then the new column will have its sizing
11343  * property set to be GTK_TREE_VIEW_COLUMN_FIXED.
11344  *
11345  * Return value: The number of columns in @tree_view after insertion.
11346  **/
11347 gint
11348 gtk_tree_view_insert_column_with_attributes (GtkTreeView     *tree_view,
11349                                              gint             position,
11350                                              const gchar     *title,
11351                                              GtkCellRenderer *cell,
11352                                              ...)
11353 {
11354   GtkTreeViewColumn *column;
11355   gchar *attribute;
11356   va_list args;
11357   gint column_id;
11358
11359   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), -1);
11360
11361   column = gtk_tree_view_column_new ();
11362   if (tree_view->priv->fixed_height_mode)
11363     gtk_tree_view_column_set_sizing (column, GTK_TREE_VIEW_COLUMN_FIXED);
11364
11365   gtk_tree_view_column_set_title (column, title);
11366   gtk_tree_view_column_pack_start (column, cell, TRUE);
11367
11368   va_start (args, cell);
11369
11370   attribute = va_arg (args, gchar *);
11371
11372   while (attribute != NULL)
11373     {
11374       column_id = va_arg (args, gint);
11375       gtk_tree_view_column_add_attribute (column, cell, attribute, column_id);
11376       attribute = va_arg (args, gchar *);
11377     }
11378
11379   va_end (args);
11380
11381   gtk_tree_view_insert_column (tree_view, column, position);
11382
11383   return tree_view->priv->n_columns;
11384 }
11385
11386 /**
11387  * gtk_tree_view_insert_column_with_data_func:
11388  * @tree_view: a #GtkTreeView
11389  * @position: Position to insert, -1 for append
11390  * @title: column title
11391  * @cell: cell renderer for column
11392  * @func: function to set attributes of cell renderer
11393  * @data: data for @func
11394  * @dnotify: destroy notifier for @data
11395  *
11396  * Convenience function that inserts a new column into the #GtkTreeView
11397  * with the given cell renderer and a #GtkCellDataFunc to set cell renderer
11398  * attributes (normally using data from the model). See also
11399  * gtk_tree_view_column_set_cell_data_func(), gtk_tree_view_column_pack_start().
11400  * If @tree_view has "fixed_height" mode enabled, then the new column will have its
11401  * "sizing" property set to be GTK_TREE_VIEW_COLUMN_FIXED.
11402  *
11403  * Return value: number of columns in the tree view post-insert
11404  **/
11405 gint
11406 gtk_tree_view_insert_column_with_data_func  (GtkTreeView               *tree_view,
11407                                              gint                       position,
11408                                              const gchar               *title,
11409                                              GtkCellRenderer           *cell,
11410                                              GtkTreeCellDataFunc        func,
11411                                              gpointer                   data,
11412                                              GDestroyNotify             dnotify)
11413 {
11414   GtkTreeViewColumn *column;
11415
11416   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), -1);
11417
11418   column = gtk_tree_view_column_new ();
11419   if (tree_view->priv->fixed_height_mode)
11420     gtk_tree_view_column_set_sizing (column, GTK_TREE_VIEW_COLUMN_FIXED);
11421
11422   gtk_tree_view_column_set_title (column, title);
11423   gtk_tree_view_column_pack_start (column, cell, TRUE);
11424   gtk_tree_view_column_set_cell_data_func (column, cell, func, data, dnotify);
11425
11426   gtk_tree_view_insert_column (tree_view, column, position);
11427
11428   return tree_view->priv->n_columns;
11429 }
11430
11431 /**
11432  * gtk_tree_view_get_column:
11433  * @tree_view: A #GtkTreeView.
11434  * @n: The position of the column, counting from 0.
11435  *
11436  * Gets the #GtkTreeViewColumn at the given position in the #tree_view.
11437  *
11438  * Return value: The #GtkTreeViewColumn, or %NULL if the position is outside the
11439  * range of columns.
11440  **/
11441 GtkTreeViewColumn *
11442 gtk_tree_view_get_column (GtkTreeView *tree_view,
11443                           gint         n)
11444 {
11445   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), NULL);
11446
11447   if (n < 0 || n >= tree_view->priv->n_columns)
11448     return NULL;
11449
11450   if (tree_view->priv->columns == NULL)
11451     return NULL;
11452
11453   return GTK_TREE_VIEW_COLUMN (g_list_nth (tree_view->priv->columns, n)->data);
11454 }
11455
11456 /**
11457  * gtk_tree_view_get_columns:
11458  * @tree_view: A #GtkTreeView
11459  *
11460  * Returns a #GList of all the #GtkTreeViewColumn s currently in @tree_view.
11461  * The returned list must be freed with g_list_free ().
11462  *
11463  * Return value: (element-type GtkTreeViewColumn) (transfer container): A list of #GtkTreeViewColumn s
11464  **/
11465 GList *
11466 gtk_tree_view_get_columns (GtkTreeView *tree_view)
11467 {
11468   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), NULL);
11469
11470   return g_list_copy (tree_view->priv->columns);
11471 }
11472
11473 /**
11474  * gtk_tree_view_move_column_after:
11475  * @tree_view: A #GtkTreeView
11476  * @column: The #GtkTreeViewColumn to be moved.
11477  * @base_column: (allow-none): The #GtkTreeViewColumn to be moved relative to, or %NULL.
11478  *
11479  * Moves @column to be after to @base_column.  If @base_column is %NULL, then
11480  * @column is placed in the first position.
11481  **/
11482 void
11483 gtk_tree_view_move_column_after (GtkTreeView       *tree_view,
11484                                  GtkTreeViewColumn *column,
11485                                  GtkTreeViewColumn *base_column)
11486 {
11487   GList *column_list_el, *base_el = NULL;
11488
11489   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
11490
11491   column_list_el = g_list_find (tree_view->priv->columns, column);
11492   g_return_if_fail (column_list_el != NULL);
11493
11494   if (base_column)
11495     {
11496       base_el = g_list_find (tree_view->priv->columns, base_column);
11497       g_return_if_fail (base_el != NULL);
11498     }
11499
11500   if (column_list_el->prev == base_el)
11501     return;
11502
11503   tree_view->priv->columns = g_list_remove_link (tree_view->priv->columns, column_list_el);
11504   if (base_el == NULL)
11505     {
11506       column_list_el->prev = NULL;
11507       column_list_el->next = tree_view->priv->columns;
11508       if (column_list_el->next)
11509         column_list_el->next->prev = column_list_el;
11510       tree_view->priv->columns = column_list_el;
11511     }
11512   else
11513     {
11514       column_list_el->prev = base_el;
11515       column_list_el->next = base_el->next;
11516       if (column_list_el->next)
11517         column_list_el->next->prev = column_list_el;
11518       base_el->next = column_list_el;
11519     }
11520
11521   if (gtk_widget_get_realized (GTK_WIDGET (tree_view)))
11522     {
11523       gtk_widget_queue_resize (GTK_WIDGET (tree_view));
11524       gtk_tree_view_size_allocate_columns (GTK_WIDGET (tree_view), NULL);
11525     }
11526
11527   g_signal_emit (tree_view, tree_view_signals[COLUMNS_CHANGED], 0);
11528 }
11529
11530 /**
11531  * gtk_tree_view_set_expander_column:
11532  * @tree_view: A #GtkTreeView
11533  * @column: %NULL, or the column to draw the expander arrow at.
11534  *
11535  * Sets the column to draw the expander arrow at. It must be in @tree_view.
11536  * If @column is %NULL, then the expander arrow is always at the first
11537  * visible column.
11538  *
11539  * If you do not want expander arrow to appear in your tree, set the
11540  * expander column to a hidden column.
11541  **/
11542 void
11543 gtk_tree_view_set_expander_column (GtkTreeView       *tree_view,
11544                                    GtkTreeViewColumn *column)
11545 {
11546   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
11547   g_return_if_fail (column == NULL || GTK_IS_TREE_VIEW_COLUMN (column));
11548
11549   if (tree_view->priv->expander_column != column)
11550     {
11551       GList *list;
11552
11553       if (column)
11554         {
11555           /* Confirm that column is in tree_view */
11556           for (list = tree_view->priv->columns; list; list = list->next)
11557             if (list->data == column)
11558               break;
11559           g_return_if_fail (list != NULL);
11560         }
11561
11562       tree_view->priv->expander_column = column;
11563       g_object_notify (G_OBJECT (tree_view), "expander-column");
11564     }
11565 }
11566
11567 /**
11568  * gtk_tree_view_get_expander_column:
11569  * @tree_view: A #GtkTreeView
11570  *
11571  * Returns the column that is the current expander column.  This
11572  * column has the expander arrow drawn next to it.
11573  *
11574  * Return value: The expander column.
11575  **/
11576 GtkTreeViewColumn *
11577 gtk_tree_view_get_expander_column (GtkTreeView *tree_view)
11578 {
11579   GList *list;
11580
11581   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), NULL);
11582
11583   for (list = tree_view->priv->columns; list; list = list->next)
11584     if (gtk_tree_view_is_expander_column (tree_view, GTK_TREE_VIEW_COLUMN (list->data)))
11585       return (GtkTreeViewColumn *) list->data;
11586   return NULL;
11587 }
11588
11589
11590 /**
11591  * gtk_tree_view_set_column_drag_function:
11592  * @tree_view: A #GtkTreeView.
11593  * @func: (allow-none): A function to determine which columns are reorderable, or %NULL.
11594  * @user_data: (allow-none): User data to be passed to @func, or %NULL
11595  * @destroy: (allow-none): Destroy notifier for @user_data, or %NULL
11596  *
11597  * Sets a user function for determining where a column may be dropped when
11598  * dragged.  This function is called on every column pair in turn at the
11599  * beginning of a column drag to determine where a drop can take place.  The
11600  * arguments passed to @func are: the @tree_view, the #GtkTreeViewColumn being
11601  * dragged, the two #GtkTreeViewColumn s determining the drop spot, and
11602  * @user_data.  If either of the #GtkTreeViewColumn arguments for the drop spot
11603  * are %NULL, then they indicate an edge.  If @func is set to be %NULL, then
11604  * @tree_view reverts to the default behavior of allowing all columns to be
11605  * dropped everywhere.
11606  **/
11607 void
11608 gtk_tree_view_set_column_drag_function (GtkTreeView               *tree_view,
11609                                         GtkTreeViewColumnDropFunc  func,
11610                                         gpointer                   user_data,
11611                                         GDestroyNotify             destroy)
11612 {
11613   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
11614
11615   if (tree_view->priv->column_drop_func_data_destroy)
11616     tree_view->priv->column_drop_func_data_destroy (tree_view->priv->column_drop_func_data);
11617
11618   tree_view->priv->column_drop_func = func;
11619   tree_view->priv->column_drop_func_data = user_data;
11620   tree_view->priv->column_drop_func_data_destroy = destroy;
11621 }
11622
11623 /**
11624  * gtk_tree_view_scroll_to_point:
11625  * @tree_view: a #GtkTreeView
11626  * @tree_x: X coordinate of new top-left pixel of visible area, or -1
11627  * @tree_y: Y coordinate of new top-left pixel of visible area, or -1
11628  *
11629  * Scrolls the tree view such that the top-left corner of the visible
11630  * area is @tree_x, @tree_y, where @tree_x and @tree_y are specified
11631  * in tree coordinates.  The @tree_view must be realized before
11632  * this function is called.  If it isn't, you probably want to be
11633  * using gtk_tree_view_scroll_to_cell().
11634  *
11635  * If either @tree_x or @tree_y are -1, then that direction isn't scrolled.
11636  **/
11637 void
11638 gtk_tree_view_scroll_to_point (GtkTreeView *tree_view,
11639                                gint         tree_x,
11640                                gint         tree_y)
11641 {
11642   GtkAdjustment *hadj;
11643   GtkAdjustment *vadj;
11644
11645   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
11646   g_return_if_fail (gtk_widget_get_realized (GTK_WIDGET (tree_view)));
11647
11648   hadj = tree_view->priv->hadjustment;
11649   vadj = tree_view->priv->vadjustment;
11650
11651   if (tree_x != -1)
11652     gtk_adjustment_set_value (hadj, CLAMP (tree_x, hadj->lower, hadj->upper - hadj->page_size));
11653   if (tree_y != -1)
11654     gtk_adjustment_set_value (vadj, CLAMP (tree_y, vadj->lower, vadj->upper - vadj->page_size));
11655 }
11656
11657 /**
11658  * gtk_tree_view_scroll_to_cell:
11659  * @tree_view: A #GtkTreeView.
11660  * @path: (allow-none): The path of the row to move to, or %NULL.
11661  * @column: (allow-none): The #GtkTreeViewColumn to move horizontally to, or %NULL.
11662  * @use_align: whether to use alignment arguments, or %FALSE.
11663  * @row_align: The vertical alignment of the row specified by @path.
11664  * @col_align: The horizontal alignment of the column specified by @column.
11665  *
11666  * Moves the alignments of @tree_view to the position specified by @column and
11667  * @path.  If @column is %NULL, then no horizontal scrolling occurs.  Likewise,
11668  * if @path is %NULL no vertical scrolling occurs.  At a minimum, one of @column
11669  * or @path need to be non-%NULL.  @row_align determines where the row is
11670  * placed, and @col_align determines where @column is placed.  Both are expected
11671  * to be between 0.0 and 1.0. 0.0 means left/top alignment, 1.0 means
11672  * right/bottom alignment, 0.5 means center.
11673  *
11674  * If @use_align is %FALSE, then the alignment arguments are ignored, and the
11675  * tree does the minimum amount of work to scroll the cell onto the screen.
11676  * This means that the cell will be scrolled to the edge closest to its current
11677  * position.  If the cell is currently visible on the screen, nothing is done.
11678  *
11679  * This function only works if the model is set, and @path is a valid row on the
11680  * model.  If the model changes before the @tree_view is realized, the centered
11681  * path will be modified to reflect this change.
11682  **/
11683 void
11684 gtk_tree_view_scroll_to_cell (GtkTreeView       *tree_view,
11685                               GtkTreePath       *path,
11686                               GtkTreeViewColumn *column,
11687                               gboolean           use_align,
11688                               gfloat             row_align,
11689                               gfloat             col_align)
11690 {
11691   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
11692   g_return_if_fail (tree_view->priv->model != NULL);
11693   g_return_if_fail (tree_view->priv->tree != NULL);
11694   g_return_if_fail (row_align >= 0.0 && row_align <= 1.0);
11695   g_return_if_fail (col_align >= 0.0 && col_align <= 1.0);
11696   g_return_if_fail (path != NULL || column != NULL);
11697
11698 #if 0
11699   g_print ("gtk_tree_view_scroll_to_cell:\npath: %s\ncolumn: %s\nuse_align: %d\nrow_align: %f\ncol_align: %f\n",
11700            gtk_tree_path_to_string (path), column?"non-null":"null", use_align, row_align, col_align);
11701 #endif
11702   row_align = CLAMP (row_align, 0.0, 1.0);
11703   col_align = CLAMP (col_align, 0.0, 1.0);
11704
11705
11706   /* Note: Despite the benefits that come from having one code path for the
11707    * scrolling code, we short-circuit validate_visible_area's immplementation as
11708    * it is much slower than just going to the point.
11709    */
11710   if (!gtk_widget_get_visible (GTK_WIDGET (tree_view)) ||
11711       !gtk_widget_get_realized (GTK_WIDGET (tree_view)) ||
11712       GTK_WIDGET_ALLOC_NEEDED (tree_view) ||
11713       GTK_RBNODE_FLAG_SET (tree_view->priv->tree->root, GTK_RBNODE_DESCENDANTS_INVALID))
11714     {
11715       if (tree_view->priv->scroll_to_path)
11716         gtk_tree_row_reference_free (tree_view->priv->scroll_to_path);
11717
11718       tree_view->priv->scroll_to_path = NULL;
11719       tree_view->priv->scroll_to_column = NULL;
11720
11721       if (path)
11722         tree_view->priv->scroll_to_path = gtk_tree_row_reference_new_proxy (G_OBJECT (tree_view), tree_view->priv->model, path);
11723       if (column)
11724         tree_view->priv->scroll_to_column = column;
11725       tree_view->priv->scroll_to_use_align = use_align;
11726       tree_view->priv->scroll_to_row_align = row_align;
11727       tree_view->priv->scroll_to_col_align = col_align;
11728
11729       install_presize_handler (tree_view);
11730     }
11731   else
11732     {
11733       GdkRectangle cell_rect;
11734       GdkRectangle vis_rect;
11735       gint dest_x, dest_y;
11736
11737       gtk_tree_view_get_background_area (tree_view, path, column, &cell_rect);
11738       gtk_tree_view_get_visible_rect (tree_view, &vis_rect);
11739
11740       cell_rect.y = TREE_WINDOW_Y_TO_RBTREE_Y (tree_view, cell_rect.y);
11741
11742       dest_x = vis_rect.x;
11743       dest_y = vis_rect.y;
11744
11745       if (column)
11746         {
11747           if (use_align)
11748             {
11749               dest_x = cell_rect.x - ((vis_rect.width - cell_rect.width) * col_align);
11750             }
11751           else
11752             {
11753               if (cell_rect.x < vis_rect.x)
11754                 dest_x = cell_rect.x;
11755               if (cell_rect.x + cell_rect.width > vis_rect.x + vis_rect.width)
11756                 dest_x = cell_rect.x + cell_rect.width - vis_rect.width;
11757             }
11758         }
11759
11760       if (path)
11761         {
11762           if (use_align)
11763             {
11764               dest_y = cell_rect.y - ((vis_rect.height - cell_rect.height) * row_align);
11765               dest_y = MAX (dest_y, 0);
11766             }
11767           else
11768             {
11769               if (cell_rect.y < vis_rect.y)
11770                 dest_y = cell_rect.y;
11771               if (cell_rect.y + cell_rect.height > vis_rect.y + vis_rect.height)
11772                 dest_y = cell_rect.y + cell_rect.height - vis_rect.height;
11773             }
11774         }
11775
11776       gtk_tree_view_scroll_to_point (tree_view, dest_x, dest_y);
11777     }
11778 }
11779
11780 /**
11781  * gtk_tree_view_row_activated:
11782  * @tree_view: A #GtkTreeView
11783  * @path: The #GtkTreePath to be activated.
11784  * @column: The #GtkTreeViewColumn to be activated.
11785  *
11786  * Activates the cell determined by @path and @column.
11787  **/
11788 void
11789 gtk_tree_view_row_activated (GtkTreeView       *tree_view,
11790                              GtkTreePath       *path,
11791                              GtkTreeViewColumn *column)
11792 {
11793   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
11794
11795   g_signal_emit (tree_view, tree_view_signals[ROW_ACTIVATED], 0, path, column);
11796 }
11797
11798
11799 static void
11800 gtk_tree_view_expand_all_emission_helper (GtkRBTree *tree,
11801                                           GtkRBNode *node,
11802                                           gpointer   data)
11803 {
11804   GtkTreeView *tree_view = data;
11805
11806   if ((node->flags & GTK_RBNODE_IS_PARENT) == GTK_RBNODE_IS_PARENT &&
11807       node->children)
11808     {
11809       GtkTreePath *path;
11810       GtkTreeIter iter;
11811
11812       path = _gtk_tree_view_find_path (tree_view, tree, node);
11813       gtk_tree_model_get_iter (tree_view->priv->model, &iter, path);
11814
11815       g_signal_emit (tree_view, tree_view_signals[ROW_EXPANDED], 0, &iter, path);
11816
11817       gtk_tree_path_free (path);
11818     }
11819
11820   if (node->children)
11821     _gtk_rbtree_traverse (node->children,
11822                           node->children->root,
11823                           G_PRE_ORDER,
11824                           gtk_tree_view_expand_all_emission_helper,
11825                           tree_view);
11826 }
11827
11828 /**
11829  * gtk_tree_view_expand_all:
11830  * @tree_view: A #GtkTreeView.
11831  *
11832  * Recursively expands all nodes in the @tree_view.
11833  **/
11834 void
11835 gtk_tree_view_expand_all (GtkTreeView *tree_view)
11836 {
11837   GtkTreePath *path;
11838   GtkRBTree *tree;
11839   GtkRBNode *node;
11840
11841   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
11842
11843   if (tree_view->priv->tree == NULL)
11844     return;
11845
11846   path = gtk_tree_path_new_first ();
11847   _gtk_tree_view_find_node (tree_view, path, &tree, &node);
11848
11849   while (node)
11850     {
11851       gtk_tree_view_real_expand_row (tree_view, path, tree, node, TRUE, FALSE);
11852       node = _gtk_rbtree_next (tree, node);
11853       gtk_tree_path_next (path);
11854   }
11855
11856   gtk_tree_path_free (path);
11857 }
11858
11859 /* Timeout to animate the expander during expands and collapses */
11860 static gboolean
11861 expand_collapse_timeout (gpointer data)
11862 {
11863   return do_expand_collapse (data);
11864 }
11865
11866 static void
11867 add_expand_collapse_timeout (GtkTreeView *tree_view,
11868                              GtkRBTree   *tree,
11869                              GtkRBNode   *node,
11870                              gboolean     expand)
11871 {
11872   if (tree_view->priv->expand_collapse_timeout != 0)
11873     return;
11874
11875   tree_view->priv->expand_collapse_timeout =
11876       gdk_threads_add_timeout (50, expand_collapse_timeout, tree_view);
11877   tree_view->priv->expanded_collapsed_tree = tree;
11878   tree_view->priv->expanded_collapsed_node = node;
11879
11880   if (expand)
11881     GTK_RBNODE_SET_FLAG (node, GTK_RBNODE_IS_SEMI_COLLAPSED);
11882   else
11883     GTK_RBNODE_SET_FLAG (node, GTK_RBNODE_IS_SEMI_EXPANDED);
11884 }
11885
11886 static void
11887 remove_expand_collapse_timeout (GtkTreeView *tree_view)
11888 {
11889   if (tree_view->priv->expand_collapse_timeout)
11890     {
11891       g_source_remove (tree_view->priv->expand_collapse_timeout);
11892       tree_view->priv->expand_collapse_timeout = 0;
11893     }
11894
11895   if (tree_view->priv->expanded_collapsed_node != NULL)
11896     {
11897       GTK_RBNODE_UNSET_FLAG (tree_view->priv->expanded_collapsed_node, GTK_RBNODE_IS_SEMI_EXPANDED);
11898       GTK_RBNODE_UNSET_FLAG (tree_view->priv->expanded_collapsed_node, GTK_RBNODE_IS_SEMI_COLLAPSED);
11899
11900       tree_view->priv->expanded_collapsed_node = NULL;
11901     }
11902 }
11903
11904 static void
11905 cancel_arrow_animation (GtkTreeView *tree_view)
11906 {
11907   if (tree_view->priv->expand_collapse_timeout)
11908     {
11909       while (do_expand_collapse (tree_view));
11910
11911       remove_expand_collapse_timeout (tree_view);
11912     }
11913 }
11914
11915 static gboolean
11916 do_expand_collapse (GtkTreeView *tree_view)
11917 {
11918   GtkRBNode *node;
11919   GtkRBTree *tree;
11920   gboolean expanding;
11921   gboolean redraw;
11922
11923   redraw = FALSE;
11924   expanding = TRUE;
11925
11926   node = tree_view->priv->expanded_collapsed_node;
11927   tree = tree_view->priv->expanded_collapsed_tree;
11928
11929   if (node->children == NULL)
11930     expanding = FALSE;
11931
11932   if (expanding)
11933     {
11934       if (GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_SEMI_COLLAPSED))
11935         {
11936           GTK_RBNODE_UNSET_FLAG (node, GTK_RBNODE_IS_SEMI_COLLAPSED);
11937           GTK_RBNODE_SET_FLAG (node, GTK_RBNODE_IS_SEMI_EXPANDED);
11938
11939           redraw = TRUE;
11940
11941         }
11942       else if (GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_SEMI_EXPANDED))
11943         {
11944           GTK_RBNODE_UNSET_FLAG (node, GTK_RBNODE_IS_SEMI_EXPANDED);
11945
11946           redraw = TRUE;
11947         }
11948     }
11949   else
11950     {
11951       if (GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_SEMI_EXPANDED))
11952         {
11953           GTK_RBNODE_UNSET_FLAG (node, GTK_RBNODE_IS_SEMI_EXPANDED);
11954           GTK_RBNODE_SET_FLAG (node, GTK_RBNODE_IS_SEMI_COLLAPSED);
11955
11956           redraw = TRUE;
11957         }
11958       else if (GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_SEMI_COLLAPSED))
11959         {
11960           GTK_RBNODE_UNSET_FLAG (node, GTK_RBNODE_IS_SEMI_COLLAPSED);
11961
11962           redraw = TRUE;
11963
11964         }
11965     }
11966
11967   if (redraw)
11968     {
11969       gtk_tree_view_queue_draw_arrow (tree_view, tree, node, NULL);
11970
11971       return TRUE;
11972     }
11973
11974   return FALSE;
11975 }
11976
11977 /**
11978  * gtk_tree_view_collapse_all:
11979  * @tree_view: A #GtkTreeView.
11980  *
11981  * Recursively collapses all visible, expanded nodes in @tree_view.
11982  **/
11983 void
11984 gtk_tree_view_collapse_all (GtkTreeView *tree_view)
11985 {
11986   GtkRBTree *tree;
11987   GtkRBNode *node;
11988   GtkTreePath *path;
11989   gint *indices;
11990
11991   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
11992
11993   if (tree_view->priv->tree == NULL)
11994     return;
11995
11996   path = gtk_tree_path_new ();
11997   gtk_tree_path_down (path);
11998   indices = gtk_tree_path_get_indices (path);
11999
12000   tree = tree_view->priv->tree;
12001   node = tree->root;
12002   while (node && node->left != tree->nil)
12003     node = node->left;
12004
12005   while (node)
12006     {
12007       if (node->children)
12008         gtk_tree_view_real_collapse_row (tree_view, path, tree, node, FALSE);
12009       indices[0]++;
12010       node = _gtk_rbtree_next (tree, node);
12011     }
12012
12013   gtk_tree_path_free (path);
12014 }
12015
12016 /**
12017  * gtk_tree_view_expand_to_path:
12018  * @tree_view: A #GtkTreeView.
12019  * @path: path to a row.
12020  *
12021  * Expands the row at @path. This will also expand all parent rows of
12022  * @path as necessary.
12023  *
12024  * Since: 2.2
12025  **/
12026 void
12027 gtk_tree_view_expand_to_path (GtkTreeView *tree_view,
12028                               GtkTreePath *path)
12029 {
12030   gint i, depth;
12031   gint *indices;
12032   GtkTreePath *tmp;
12033
12034   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
12035   g_return_if_fail (path != NULL);
12036
12037   depth = gtk_tree_path_get_depth (path);
12038   indices = gtk_tree_path_get_indices (path);
12039
12040   tmp = gtk_tree_path_new ();
12041   g_return_if_fail (tmp != NULL);
12042
12043   for (i = 0; i < depth; i++)
12044     {
12045       gtk_tree_path_append_index (tmp, indices[i]);
12046       gtk_tree_view_expand_row (tree_view, tmp, FALSE);
12047     }
12048
12049   gtk_tree_path_free (tmp);
12050 }
12051
12052 /* FIXME the bool return values for expand_row and collapse_row are
12053  * not analagous; they should be TRUE if the row had children and
12054  * was not already in the requested state.
12055  */
12056
12057
12058 static gboolean
12059 gtk_tree_view_real_expand_row (GtkTreeView *tree_view,
12060                                GtkTreePath *path,
12061                                GtkRBTree   *tree,
12062                                GtkRBNode   *node,
12063                                gboolean     open_all,
12064                                gboolean     animate)
12065 {
12066   GtkTreeIter iter;
12067   GtkTreeIter temp;
12068   gboolean expand;
12069
12070   if (animate)
12071     g_object_get (gtk_widget_get_settings (GTK_WIDGET (tree_view)),
12072                   "gtk-enable-animations", &animate,
12073                   NULL);
12074
12075   remove_auto_expand_timeout (tree_view);
12076
12077   if (node->children && !open_all)
12078     return FALSE;
12079
12080   if (! GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_PARENT))
12081     return FALSE;
12082
12083   gtk_tree_model_get_iter (tree_view->priv->model, &iter, path);
12084   if (! gtk_tree_model_iter_has_child (tree_view->priv->model, &iter))
12085     return FALSE;
12086
12087
12088    if (node->children && open_all)
12089     {
12090       gboolean retval = FALSE;
12091       GtkTreePath *tmp_path = gtk_tree_path_copy (path);
12092
12093       gtk_tree_path_append_index (tmp_path, 0);
12094       tree = node->children;
12095       node = tree->root;
12096       while (node->left != tree->nil)
12097         node = node->left;
12098       /* try to expand the children */
12099       do
12100         {
12101          gboolean t;
12102          t = gtk_tree_view_real_expand_row (tree_view, tmp_path, tree, node,
12103                                             TRUE, animate);
12104          if (t)
12105            retval = TRUE;
12106
12107          gtk_tree_path_next (tmp_path);
12108          node = _gtk_rbtree_next (tree, node);
12109        }
12110       while (node != NULL);
12111
12112       gtk_tree_path_free (tmp_path);
12113
12114       return retval;
12115     }
12116
12117   g_signal_emit (tree_view, tree_view_signals[TEST_EXPAND_ROW], 0, &iter, path, &expand);
12118
12119   if (!gtk_tree_model_iter_has_child (tree_view->priv->model, &iter))
12120     return FALSE;
12121
12122   if (expand)
12123     return FALSE;
12124
12125   node->children = _gtk_rbtree_new ();
12126   node->children->parent_tree = tree;
12127   node->children->parent_node = node;
12128
12129   gtk_tree_model_iter_children (tree_view->priv->model, &temp, &iter);
12130
12131   gtk_tree_view_build_tree (tree_view,
12132                             node->children,
12133                             &temp,
12134                             gtk_tree_path_get_depth (path) + 1,
12135                             open_all);
12136
12137   remove_expand_collapse_timeout (tree_view);
12138
12139   if (animate)
12140     add_expand_collapse_timeout (tree_view, tree, node, TRUE);
12141
12142   install_presize_handler (tree_view);
12143
12144   g_signal_emit (tree_view, tree_view_signals[ROW_EXPANDED], 0, &iter, path);
12145   if (open_all && node->children)
12146     {
12147       _gtk_rbtree_traverse (node->children,
12148                             node->children->root,
12149                             G_PRE_ORDER,
12150                             gtk_tree_view_expand_all_emission_helper,
12151                             tree_view);
12152     }
12153   return TRUE;
12154 }
12155
12156
12157 /**
12158  * gtk_tree_view_expand_row:
12159  * @tree_view: a #GtkTreeView
12160  * @path: path to a row
12161  * @open_all: whether to recursively expand, or just expand immediate children
12162  *
12163  * Opens the row so its children are visible.
12164  *
12165  * Return value: %TRUE if the row existed and had children
12166  **/
12167 gboolean
12168 gtk_tree_view_expand_row (GtkTreeView *tree_view,
12169                           GtkTreePath *path,
12170                           gboolean     open_all)
12171 {
12172   GtkRBTree *tree;
12173   GtkRBNode *node;
12174
12175   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), FALSE);
12176   g_return_val_if_fail (tree_view->priv->model != NULL, FALSE);
12177   g_return_val_if_fail (path != NULL, FALSE);
12178
12179   if (_gtk_tree_view_find_node (tree_view,
12180                                 path,
12181                                 &tree,
12182                                 &node))
12183     return FALSE;
12184
12185   if (tree != NULL)
12186     return gtk_tree_view_real_expand_row (tree_view, path, tree, node, open_all, FALSE);
12187   else
12188     return FALSE;
12189 }
12190
12191 static gboolean
12192 gtk_tree_view_real_collapse_row (GtkTreeView *tree_view,
12193                                  GtkTreePath *path,
12194                                  GtkRBTree   *tree,
12195                                  GtkRBNode   *node,
12196                                  gboolean     animate)
12197 {
12198   GtkTreeIter iter;
12199   GtkTreeIter children;
12200   gboolean collapse;
12201   gint x, y;
12202   GList *list;
12203   GdkWindow *child, *parent;
12204
12205   if (animate)
12206     g_object_get (gtk_widget_get_settings (GTK_WIDGET (tree_view)),
12207                   "gtk-enable-animations", &animate,
12208                   NULL);
12209
12210   remove_auto_expand_timeout (tree_view);
12211
12212   if (node->children == NULL)
12213     return FALSE;
12214
12215   gtk_tree_model_get_iter (tree_view->priv->model, &iter, path);
12216
12217   g_signal_emit (tree_view, tree_view_signals[TEST_COLLAPSE_ROW], 0, &iter, path, &collapse);
12218
12219   if (collapse)
12220     return FALSE;
12221
12222   /* if the prelighted node is a child of us, we want to unprelight it.  We have
12223    * a chance to prelight the correct node below */
12224
12225   if (tree_view->priv->prelight_tree)
12226     {
12227       GtkRBTree *parent_tree;
12228       GtkRBNode *parent_node;
12229
12230       parent_tree = tree_view->priv->prelight_tree->parent_tree;
12231       parent_node = tree_view->priv->prelight_tree->parent_node;
12232       while (parent_tree)
12233         {
12234           if (parent_tree == tree && parent_node == node)
12235             {
12236               ensure_unprelighted (tree_view);
12237               break;
12238             }
12239           parent_node = parent_tree->parent_node;
12240           parent_tree = parent_tree->parent_tree;
12241         }
12242     }
12243
12244   TREE_VIEW_INTERNAL_ASSERT (gtk_tree_model_iter_children (tree_view->priv->model, &children, &iter), FALSE);
12245
12246   for (list = tree_view->priv->columns; list; list = list->next)
12247     {
12248       GtkTreeViewColumn *column = list->data;
12249
12250       if (column->visible == FALSE)
12251         continue;
12252       if (gtk_tree_view_column_get_sizing (column) == GTK_TREE_VIEW_COLUMN_AUTOSIZE)
12253         _gtk_tree_view_column_cell_set_dirty (column, TRUE);
12254     }
12255
12256   if (tree_view->priv->destroy_count_func)
12257     {
12258       GtkTreePath *child_path;
12259       gint child_count = 0;
12260       child_path = gtk_tree_path_copy (path);
12261       gtk_tree_path_down (child_path);
12262       if (node->children)
12263         _gtk_rbtree_traverse (node->children, node->children->root, G_POST_ORDER, count_children_helper, &child_count);
12264       tree_view->priv->destroy_count_func (tree_view, child_path, child_count, tree_view->priv->destroy_count_data);
12265       gtk_tree_path_free (child_path);
12266     }
12267
12268   if (gtk_tree_row_reference_valid (tree_view->priv->cursor))
12269     {
12270       GtkTreePath *cursor_path = gtk_tree_row_reference_get_path (tree_view->priv->cursor);
12271
12272       if (gtk_tree_path_is_ancestor (path, cursor_path))
12273         {
12274           gtk_tree_row_reference_free (tree_view->priv->cursor);
12275           tree_view->priv->cursor = gtk_tree_row_reference_new_proxy (G_OBJECT (tree_view),
12276                                                                       tree_view->priv->model,
12277                                                                       path);
12278         }
12279       gtk_tree_path_free (cursor_path);
12280     }
12281
12282   if (gtk_tree_row_reference_valid (tree_view->priv->anchor))
12283     {
12284       GtkTreePath *anchor_path = gtk_tree_row_reference_get_path (tree_view->priv->anchor);
12285       if (gtk_tree_path_is_ancestor (path, anchor_path))
12286         {
12287           gtk_tree_row_reference_free (tree_view->priv->anchor);
12288           tree_view->priv->anchor = NULL;
12289         }
12290       gtk_tree_path_free (anchor_path);
12291     }
12292
12293   /* Stop a pending double click */
12294   tree_view->priv->last_button_x = -1;
12295   tree_view->priv->last_button_y = -1;
12296
12297   remove_expand_collapse_timeout (tree_view);
12298
12299   if (gtk_tree_view_unref_and_check_selection_tree (tree_view, node->children))
12300     {
12301       _gtk_rbtree_remove (node->children);
12302       g_signal_emit_by_name (tree_view->priv->selection, "changed");
12303     }
12304   else
12305     _gtk_rbtree_remove (node->children);
12306
12307   if (animate)
12308     add_expand_collapse_timeout (tree_view, tree, node, FALSE);
12309
12310   if (gtk_widget_get_mapped (GTK_WIDGET (tree_view)))
12311     {
12312       gtk_widget_queue_resize (GTK_WIDGET (tree_view));
12313     }
12314
12315   g_signal_emit (tree_view, tree_view_signals[ROW_COLLAPSED], 0, &iter, path);
12316
12317   if (gtk_widget_get_mapped (GTK_WIDGET (tree_view)))
12318     {
12319       /* now that we've collapsed all rows, we want to try to set the prelight
12320        * again. To do this, we fake a motion event and send it to ourselves. */
12321
12322       child = tree_view->priv->bin_window;
12323       parent = gdk_window_get_parent (child);
12324
12325       if (gdk_window_get_pointer (parent, &x, &y, NULL) == child)
12326         {
12327           GdkEventMotion event;
12328           gint child_x, child_y;
12329
12330           gdk_window_get_position (child, &child_x, &child_y);
12331
12332           event.window = tree_view->priv->bin_window;
12333           event.x = x - child_x;
12334           event.y = y - child_y;
12335
12336           /* despite the fact this isn't a real event, I'm almost positive it will
12337            * never trigger a drag event.  maybe_drag is the only function that uses
12338            * more than just event.x and event.y. */
12339           gtk_tree_view_motion_bin_window (GTK_WIDGET (tree_view), &event);
12340         }
12341     }
12342
12343   return TRUE;
12344 }
12345
12346 /**
12347  * gtk_tree_view_collapse_row:
12348  * @tree_view: a #GtkTreeView
12349  * @path: path to a row in the @tree_view
12350  *
12351  * Collapses a row (hides its child rows, if they exist).
12352  *
12353  * Return value: %TRUE if the row was collapsed.
12354  **/
12355 gboolean
12356 gtk_tree_view_collapse_row (GtkTreeView *tree_view,
12357                             GtkTreePath *path)
12358 {
12359   GtkRBTree *tree;
12360   GtkRBNode *node;
12361
12362   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), FALSE);
12363   g_return_val_if_fail (tree_view->priv->tree != NULL, FALSE);
12364   g_return_val_if_fail (path != NULL, FALSE);
12365
12366   if (_gtk_tree_view_find_node (tree_view,
12367                                 path,
12368                                 &tree,
12369                                 &node))
12370     return FALSE;
12371
12372   if (tree == NULL || node->children == NULL)
12373     return FALSE;
12374
12375   return gtk_tree_view_real_collapse_row (tree_view, path, tree, node, FALSE);
12376 }
12377
12378 static void
12379 gtk_tree_view_map_expanded_rows_helper (GtkTreeView            *tree_view,
12380                                         GtkRBTree              *tree,
12381                                         GtkTreePath            *path,
12382                                         GtkTreeViewMappingFunc  func,
12383                                         gpointer                user_data)
12384 {
12385   GtkRBNode *node;
12386
12387   if (tree == NULL || tree->root == NULL)
12388     return;
12389
12390   node = tree->root;
12391
12392   while (node && node->left != tree->nil)
12393     node = node->left;
12394
12395   while (node)
12396     {
12397       if (node->children)
12398         {
12399           (* func) (tree_view, path, user_data);
12400           gtk_tree_path_down (path);
12401           gtk_tree_view_map_expanded_rows_helper (tree_view, node->children, path, func, user_data);
12402           gtk_tree_path_up (path);
12403         }
12404       gtk_tree_path_next (path);
12405       node = _gtk_rbtree_next (tree, node);
12406     }
12407 }
12408
12409 /**
12410  * gtk_tree_view_map_expanded_rows:
12411  * @tree_view: A #GtkTreeView
12412  * @func: A function to be called
12413  * @data: User data to be passed to the function.
12414  *
12415  * Calls @func on all expanded rows.
12416  **/
12417 void
12418 gtk_tree_view_map_expanded_rows (GtkTreeView            *tree_view,
12419                                  GtkTreeViewMappingFunc  func,
12420                                  gpointer                user_data)
12421 {
12422   GtkTreePath *path;
12423
12424   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
12425   g_return_if_fail (func != NULL);
12426
12427   path = gtk_tree_path_new_first ();
12428
12429   gtk_tree_view_map_expanded_rows_helper (tree_view,
12430                                           tree_view->priv->tree,
12431                                           path, func, user_data);
12432
12433   gtk_tree_path_free (path);
12434 }
12435
12436 /**
12437  * gtk_tree_view_row_expanded:
12438  * @tree_view: A #GtkTreeView.
12439  * @path: A #GtkTreePath to test expansion state.
12440  *
12441  * Returns %TRUE if the node pointed to by @path is expanded in @tree_view.
12442  *
12443  * Return value: %TRUE if #path is expanded.
12444  **/
12445 gboolean
12446 gtk_tree_view_row_expanded (GtkTreeView *tree_view,
12447                             GtkTreePath *path)
12448 {
12449   GtkRBTree *tree;
12450   GtkRBNode *node;
12451
12452   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), FALSE);
12453   g_return_val_if_fail (path != NULL, FALSE);
12454
12455   _gtk_tree_view_find_node (tree_view, path, &tree, &node);
12456
12457   if (node == NULL)
12458     return FALSE;
12459
12460   return (node->children != NULL);
12461 }
12462
12463 /**
12464  * gtk_tree_view_get_reorderable:
12465  * @tree_view: a #GtkTreeView
12466  *
12467  * Retrieves whether the user can reorder the tree via drag-and-drop. See
12468  * gtk_tree_view_set_reorderable().
12469  *
12470  * Return value: %TRUE if the tree can be reordered.
12471  **/
12472 gboolean
12473 gtk_tree_view_get_reorderable (GtkTreeView *tree_view)
12474 {
12475   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), FALSE);
12476
12477   return tree_view->priv->reorderable;
12478 }
12479
12480 /**
12481  * gtk_tree_view_set_reorderable:
12482  * @tree_view: A #GtkTreeView.
12483  * @reorderable: %TRUE, if the tree can be reordered.
12484  *
12485  * This function is a convenience function to allow you to reorder
12486  * models that support the #GtkDragSourceIface and the
12487  * #GtkDragDestIface.  Both #GtkTreeStore and #GtkListStore support
12488  * these.  If @reorderable is %TRUE, then the user can reorder the
12489  * model by dragging and dropping rows. The developer can listen to
12490  * these changes by connecting to the model's row_inserted and
12491  * row_deleted signals. The reordering is implemented by setting up
12492  * the tree view as a drag source and destination. Therefore, drag and
12493  * drop can not be used in a reorderable view for any other purpose.
12494  *
12495  * This function does not give you any degree of control over the order -- any
12496  * reordering is allowed.  If more control is needed, you should probably
12497  * handle drag and drop manually.
12498  **/
12499 void
12500 gtk_tree_view_set_reorderable (GtkTreeView *tree_view,
12501                                gboolean     reorderable)
12502 {
12503   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
12504
12505   reorderable = reorderable != FALSE;
12506
12507   if (tree_view->priv->reorderable == reorderable)
12508     return;
12509
12510   if (reorderable)
12511     {
12512       const GtkTargetEntry row_targets[] = {
12513         { "GTK_TREE_MODEL_ROW", GTK_TARGET_SAME_WIDGET, 0 }
12514       };
12515
12516       gtk_tree_view_enable_model_drag_source (tree_view,
12517                                               GDK_BUTTON1_MASK,
12518                                               row_targets,
12519                                               G_N_ELEMENTS (row_targets),
12520                                               GDK_ACTION_MOVE);
12521       gtk_tree_view_enable_model_drag_dest (tree_view,
12522                                             row_targets,
12523                                             G_N_ELEMENTS (row_targets),
12524                                             GDK_ACTION_MOVE);
12525     }
12526   else
12527     {
12528       gtk_tree_view_unset_rows_drag_source (tree_view);
12529       gtk_tree_view_unset_rows_drag_dest (tree_view);
12530     }
12531
12532   tree_view->priv->reorderable = reorderable;
12533
12534   g_object_notify (G_OBJECT (tree_view), "reorderable");
12535 }
12536
12537 static void
12538 gtk_tree_view_real_set_cursor (GtkTreeView     *tree_view,
12539                                GtkTreePath     *path,
12540                                gboolean         clear_and_select,
12541                                gboolean         clamp_node)
12542 {
12543   GtkRBTree *tree = NULL;
12544   GtkRBNode *node = NULL;
12545
12546   if (gtk_tree_row_reference_valid (tree_view->priv->cursor))
12547     {
12548       GtkTreePath *cursor_path;
12549       cursor_path = gtk_tree_row_reference_get_path (tree_view->priv->cursor);
12550       gtk_tree_view_queue_draw_path (tree_view, cursor_path, NULL);
12551       gtk_tree_path_free (cursor_path);
12552     }
12553
12554   gtk_tree_row_reference_free (tree_view->priv->cursor);
12555   tree_view->priv->cursor = NULL;
12556
12557   /* One cannot set the cursor on a separator.   Also, if
12558    * _gtk_tree_view_find_node returns TRUE, it ran out of tree
12559    * before finding the tree and node belonging to path.  The
12560    * path maps to a non-existing path and we will silently bail out.
12561    * We unset tree and node to avoid further processing.
12562    */
12563   if (!row_is_separator (tree_view, NULL, path)
12564       && _gtk_tree_view_find_node (tree_view, path, &tree, &node) == FALSE)
12565     {
12566       tree_view->priv->cursor =
12567           gtk_tree_row_reference_new_proxy (G_OBJECT (tree_view),
12568                                             tree_view->priv->model,
12569                                             path);
12570     }
12571   else
12572     {
12573       tree = NULL;
12574       node = NULL;
12575     }
12576
12577   if (tree != NULL)
12578     {
12579       GtkRBTree *new_tree = NULL;
12580       GtkRBNode *new_node = NULL;
12581
12582       if (clear_and_select && !tree_view->priv->ctrl_pressed)
12583         {
12584           GtkTreeSelectMode mode = 0;
12585
12586           if (tree_view->priv->ctrl_pressed)
12587             mode |= GTK_TREE_SELECT_MODE_TOGGLE;
12588           if (tree_view->priv->shift_pressed)
12589             mode |= GTK_TREE_SELECT_MODE_EXTEND;
12590
12591           _gtk_tree_selection_internal_select_node (tree_view->priv->selection,
12592                                                     node, tree, path, mode,
12593                                                     FALSE);
12594         }
12595
12596       /* We have to re-find tree and node here again, somebody might have
12597        * cleared the node or the whole tree in the GtkTreeSelection::changed
12598        * callback. If the nodes differ we bail out here.
12599        */
12600       _gtk_tree_view_find_node (tree_view, path, &new_tree, &new_node);
12601
12602       if (tree != new_tree || node != new_node)
12603         return;
12604
12605       if (clamp_node)
12606         {
12607           gtk_tree_view_clamp_node_visible (tree_view, tree, node);
12608           _gtk_tree_view_queue_draw_node (tree_view, tree, node, NULL);
12609         }
12610     }
12611
12612   g_signal_emit (tree_view, tree_view_signals[CURSOR_CHANGED], 0);
12613 }
12614
12615 /**
12616  * gtk_tree_view_get_cursor:
12617  * @tree_view: A #GtkTreeView
12618  * @path: (allow-none): A pointer to be filled with the current cursor path, or %NULL
12619  * @focus_column: (allow-none): A pointer to be filled with the current focus column, or %NULL
12620  *
12621  * Fills in @path and @focus_column with the current path and focus column.  If
12622  * the cursor isn't currently set, then *@path will be %NULL.  If no column
12623  * currently has focus, then *@focus_column will be %NULL.
12624  *
12625  * The returned #GtkTreePath must be freed with gtk_tree_path_free() when
12626  * you are done with it.
12627  **/
12628 void
12629 gtk_tree_view_get_cursor (GtkTreeView        *tree_view,
12630                           GtkTreePath       **path,
12631                           GtkTreeViewColumn **focus_column)
12632 {
12633   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
12634
12635   if (path)
12636     {
12637       if (gtk_tree_row_reference_valid (tree_view->priv->cursor))
12638         *path = gtk_tree_row_reference_get_path (tree_view->priv->cursor);
12639       else
12640         *path = NULL;
12641     }
12642
12643   if (focus_column)
12644     {
12645       *focus_column = tree_view->priv->focus_column;
12646     }
12647 }
12648
12649 /**
12650  * gtk_tree_view_set_cursor:
12651  * @tree_view: A #GtkTreeView
12652  * @path: A #GtkTreePath
12653  * @focus_column: (allow-none): A #GtkTreeViewColumn, or %NULL
12654  * @start_editing: %TRUE if the specified cell should start being edited.
12655  *
12656  * Sets the current keyboard focus to be at @path, and selects it.  This is
12657  * useful when you want to focus the user's attention on a particular row.  If
12658  * @focus_column is not %NULL, then focus is given to the column specified by
12659  * it. Additionally, if @focus_column is specified, and @start_editing is
12660  * %TRUE, then editing should be started in the specified cell.
12661  * This function is often followed by @gtk_widget_grab_focus (@tree_view)
12662  * in order to give keyboard focus to the widget.  Please note that editing
12663  * can only happen when the widget is realized.
12664  *
12665  * If @path is invalid for @model, the current cursor (if any) will be unset
12666  * and the function will return without failing.
12667  **/
12668 void
12669 gtk_tree_view_set_cursor (GtkTreeView       *tree_view,
12670                           GtkTreePath       *path,
12671                           GtkTreeViewColumn *focus_column,
12672                           gboolean           start_editing)
12673 {
12674   gtk_tree_view_set_cursor_on_cell (tree_view, path, focus_column,
12675                                     NULL, start_editing);
12676 }
12677
12678 /**
12679  * gtk_tree_view_set_cursor_on_cell:
12680  * @tree_view: A #GtkTreeView
12681  * @path: A #GtkTreePath
12682  * @focus_column: (allow-none): A #GtkTreeViewColumn, or %NULL
12683  * @focus_cell: (allow-none): A #GtkCellRenderer, or %NULL
12684  * @start_editing: %TRUE if the specified cell should start being edited.
12685  *
12686  * Sets the current keyboard focus to be at @path, and selects it.  This is
12687  * useful when you want to focus the user's attention on a particular row.  If
12688  * @focus_column is not %NULL, then focus is given to the column specified by
12689  * it. If @focus_column and @focus_cell are not %NULL, and @focus_column
12690  * contains 2 or more editable or activatable cells, then focus is given to
12691  * the cell specified by @focus_cell. Additionally, if @focus_column is
12692  * specified, and @start_editing is %TRUE, then editing should be started in
12693  * the specified cell.  This function is often followed by
12694  * @gtk_widget_grab_focus (@tree_view) in order to give keyboard focus to the
12695  * widget.  Please note that editing can only happen when the widget is
12696  * realized.
12697  *
12698  * If @path is invalid for @model, the current cursor (if any) will be unset
12699  * and the function will return without failing.
12700  *
12701  * Since: 2.2
12702  **/
12703 void
12704 gtk_tree_view_set_cursor_on_cell (GtkTreeView       *tree_view,
12705                                   GtkTreePath       *path,
12706                                   GtkTreeViewColumn *focus_column,
12707                                   GtkCellRenderer   *focus_cell,
12708                                   gboolean           start_editing)
12709 {
12710   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
12711   g_return_if_fail (path != NULL);
12712   g_return_if_fail (focus_column == NULL || GTK_IS_TREE_VIEW_COLUMN (focus_column));
12713
12714   if (!tree_view->priv->model)
12715     return;
12716
12717   if (focus_cell)
12718     {
12719       g_return_if_fail (focus_column);
12720       g_return_if_fail (GTK_IS_CELL_RENDERER (focus_cell));
12721     }
12722
12723   /* cancel the current editing, if it exists */
12724   if (tree_view->priv->edited_column &&
12725       tree_view->priv->edited_column->editable_widget)
12726     gtk_tree_view_stop_editing (tree_view, TRUE);
12727
12728   gtk_tree_view_real_set_cursor (tree_view, path, TRUE, TRUE);
12729
12730   if (focus_column && focus_column->visible)
12731     {
12732       GList *list;
12733       gboolean column_in_tree = FALSE;
12734
12735       for (list = tree_view->priv->columns; list; list = list->next)
12736         if (list->data == focus_column)
12737           {
12738             column_in_tree = TRUE;
12739             break;
12740           }
12741       g_return_if_fail (column_in_tree);
12742       tree_view->priv->focus_column = focus_column;
12743       if (focus_cell)
12744         gtk_tree_view_column_focus_cell (focus_column, focus_cell);
12745       if (start_editing)
12746         gtk_tree_view_start_editing (tree_view, path);
12747     }
12748 }
12749
12750 /**
12751  * gtk_tree_view_get_bin_window:
12752  * @tree_view: A #GtkTreeView
12753  *
12754  * Returns the window that @tree_view renders to.  This is used primarily to
12755  * compare to <literal>event->window</literal> to confirm that the event on
12756  * @tree_view is on the right window.
12757  *
12758  * Return value: A #GdkWindow, or %NULL when @tree_view hasn't been realized yet
12759  **/
12760 GdkWindow *
12761 gtk_tree_view_get_bin_window (GtkTreeView *tree_view)
12762 {
12763   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), NULL);
12764
12765   return tree_view->priv->bin_window;
12766 }
12767
12768 /**
12769  * gtk_tree_view_get_path_at_pos:
12770  * @tree_view: A #GtkTreeView.
12771  * @x: The x position to be identified (relative to bin_window).
12772  * @y: The y position to be identified (relative to bin_window).
12773  * @path: (out) (allow-none): A pointer to a #GtkTreePath pointer to be filled in, or %NULL
12774  * @column: (out) (allow-none): A pointer to a #GtkTreeViewColumn pointer to be filled in, or %NULL
12775  * @cell_x: (out) (allow-none): A pointer where the X coordinate relative to the cell can be placed, or %NULL
12776  * @cell_y: (out) (allow-none): A pointer where the Y coordinate relative to the cell can be placed, or %NULL
12777  *
12778  * Finds the path at the point (@x, @y), relative to bin_window coordinates
12779  * (please see gtk_tree_view_get_bin_window()).
12780  * That is, @x and @y are relative to an events coordinates. @x and @y must
12781  * come from an event on the @tree_view only where <literal>event->window ==
12782  * gtk_tree_view_get_bin_window (<!-- -->)</literal>. It is primarily for
12783  * things like popup menus. If @path is non-%NULL, then it will be filled
12784  * with the #GtkTreePath at that point.  This path should be freed with
12785  * gtk_tree_path_free().  If @column is non-%NULL, then it will be filled
12786  * with the column at that point.  @cell_x and @cell_y return the coordinates
12787  * relative to the cell background (i.e. the @background_area passed to
12788  * gtk_cell_renderer_render()).  This function is only meaningful if
12789  * @tree_view is realized.  Therefore this function will always return %FALSE
12790  * if @tree_view is not realized or does not have a model.
12791  *
12792  * For converting widget coordinates (eg. the ones you get from
12793  * GtkWidget::query-tooltip), please see
12794  * gtk_tree_view_convert_widget_to_bin_window_coords().
12795  *
12796  * Return value: %TRUE if a row exists at that coordinate.
12797  **/
12798 gboolean
12799 gtk_tree_view_get_path_at_pos (GtkTreeView        *tree_view,
12800                                gint                x,
12801                                gint                y,
12802                                GtkTreePath       **path,
12803                                GtkTreeViewColumn **column,
12804                                gint               *cell_x,
12805                                gint               *cell_y)
12806 {
12807   GtkRBTree *tree;
12808   GtkRBNode *node;
12809   gint y_offset;
12810
12811   g_return_val_if_fail (tree_view != NULL, FALSE);
12812
12813   if (path)
12814     *path = NULL;
12815   if (column)
12816     *column = NULL;
12817
12818   if (tree_view->priv->bin_window == NULL)
12819     return FALSE;
12820
12821   if (tree_view->priv->tree == NULL)
12822     return FALSE;
12823
12824   if (x > tree_view->priv->hadjustment->upper)
12825     return FALSE;
12826
12827   if (x < 0 || y < 0)
12828     return FALSE;
12829
12830   if (column || cell_x)
12831     {
12832       GtkTreeViewColumn *tmp_column;
12833       GtkTreeViewColumn *last_column = NULL;
12834       GList *list;
12835       gint remaining_x = x;
12836       gboolean found = FALSE;
12837       gboolean rtl;
12838
12839       rtl = (gtk_widget_get_direction (GTK_WIDGET (tree_view)) == GTK_TEXT_DIR_RTL);
12840       for (list = (rtl ? g_list_last (tree_view->priv->columns) : g_list_first (tree_view->priv->columns));
12841            list;
12842            list = (rtl ? list->prev : list->next))
12843         {
12844           tmp_column = list->data;
12845
12846           if (tmp_column->visible == FALSE)
12847             continue;
12848
12849           last_column = tmp_column;
12850           if (remaining_x <= tmp_column->width)
12851             {
12852               found = TRUE;
12853
12854               if (column)
12855                 *column = tmp_column;
12856
12857               if (cell_x)
12858                 *cell_x = remaining_x;
12859
12860               break;
12861             }
12862           remaining_x -= tmp_column->width;
12863         }
12864
12865       /* If found is FALSE and there is a last_column, then it the remainder
12866        * space is in that area
12867        */
12868       if (!found)
12869         {
12870           if (last_column)
12871             {
12872               if (column)
12873                 *column = last_column;
12874
12875               if (cell_x)
12876                 *cell_x = last_column->width + remaining_x;
12877             }
12878           else
12879             {
12880               return FALSE;
12881             }
12882         }
12883     }
12884
12885   y_offset = _gtk_rbtree_find_offset (tree_view->priv->tree,
12886                                       TREE_WINDOW_Y_TO_RBTREE_Y (tree_view, y),
12887                                       &tree, &node);
12888
12889   if (tree == NULL)
12890     return FALSE;
12891
12892   if (cell_y)
12893     *cell_y = y_offset;
12894
12895   if (path)
12896     *path = _gtk_tree_view_find_path (tree_view, tree, node);
12897
12898   return TRUE;
12899 }
12900
12901
12902 /**
12903  * gtk_tree_view_get_cell_area:
12904  * @tree_view: a #GtkTreeView
12905  * @path: (allow-none): a #GtkTreePath for the row, or %NULL to get only horizontal coordinates
12906  * @column: (allow-none): a #GtkTreeViewColumn for the column, or %NULL to get only vertical coordinates
12907  * @rect: rectangle to fill with cell rect
12908  *
12909  * Fills the bounding rectangle in bin_window coordinates for the cell at the
12910  * row specified by @path and the column specified by @column.  If @path is
12911  * %NULL, or points to a path not currently displayed, the @y and @height fields
12912  * of the rectangle will be filled with 0. If @column is %NULL, the @x and @width
12913  * fields will be filled with 0.  The sum of all cell rects does not cover the
12914  * entire tree; there are extra pixels in between rows, for example. The
12915  * returned rectangle is equivalent to the @cell_area passed to
12916  * gtk_cell_renderer_render().  This function is only valid if @tree_view is
12917  * realized.
12918  **/
12919 void
12920 gtk_tree_view_get_cell_area (GtkTreeView        *tree_view,
12921                              GtkTreePath        *path,
12922                              GtkTreeViewColumn  *column,
12923                              GdkRectangle       *rect)
12924 {
12925   GtkRBTree *tree = NULL;
12926   GtkRBNode *node = NULL;
12927   gint vertical_separator;
12928   gint horizontal_separator;
12929
12930   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
12931   g_return_if_fail (column == NULL || GTK_IS_TREE_VIEW_COLUMN (column));
12932   g_return_if_fail (rect != NULL);
12933   g_return_if_fail (!column || column->tree_view == (GtkWidget *) tree_view);
12934   g_return_if_fail (gtk_widget_get_realized (GTK_WIDGET (tree_view)));
12935
12936   gtk_widget_style_get (GTK_WIDGET (tree_view),
12937                         "vertical-separator", &vertical_separator,
12938                         "horizontal-separator", &horizontal_separator,
12939                         NULL);
12940
12941   rect->x = 0;
12942   rect->y = 0;
12943   rect->width = 0;
12944   rect->height = 0;
12945
12946   if (column)
12947     {
12948       rect->x = column->button->allocation.x + horizontal_separator/2;
12949       rect->width = column->button->allocation.width - horizontal_separator;
12950     }
12951
12952   if (path)
12953     {
12954       gboolean ret = _gtk_tree_view_find_node (tree_view, path, &tree, &node);
12955
12956       /* Get vertical coords */
12957       if ((!ret && tree == NULL) || ret)
12958         return;
12959
12960       rect->y = CELL_FIRST_PIXEL (tree_view, tree, node, vertical_separator);
12961       rect->height = MAX (CELL_HEIGHT (node, vertical_separator), tree_view->priv->expander_size - vertical_separator);
12962
12963       if (column &&
12964           gtk_tree_view_is_expander_column (tree_view, column))
12965         {
12966           gint depth = gtk_tree_path_get_depth (path);
12967           gboolean rtl;
12968
12969           rtl = gtk_widget_get_direction (GTK_WIDGET (tree_view)) == GTK_TEXT_DIR_RTL;
12970
12971           if (!rtl)
12972             rect->x += (depth - 1) * tree_view->priv->level_indentation;
12973           rect->width -= (depth - 1) * tree_view->priv->level_indentation;
12974
12975           if (TREE_VIEW_DRAW_EXPANDERS (tree_view))
12976             {
12977               if (!rtl)
12978                 rect->x += depth * tree_view->priv->expander_size;
12979               rect->width -= depth * tree_view->priv->expander_size;
12980             }
12981
12982           rect->width = MAX (rect->width, 0);
12983         }
12984     }
12985 }
12986
12987 /**
12988  * gtk_tree_view_get_background_area:
12989  * @tree_view: a #GtkTreeView
12990  * @path: (allow-none): a #GtkTreePath for the row, or %NULL to get only horizontal coordinates
12991  * @column: (allow-none): a #GtkTreeViewColumn for the column, or %NULL to get only vertical coordiantes
12992  * @rect: rectangle to fill with cell background rect
12993  *
12994  * Fills the bounding rectangle in bin_window coordinates for the cell at the
12995  * row specified by @path and the column specified by @column.  If @path is
12996  * %NULL, or points to a node not found in the tree, the @y and @height fields of
12997  * the rectangle will be filled with 0. If @column is %NULL, the @x and @width
12998  * fields will be filled with 0.  The returned rectangle is equivalent to the
12999  * @background_area passed to gtk_cell_renderer_render().  These background
13000  * areas tile to cover the entire bin window.  Contrast with the @cell_area,
13001  * returned by gtk_tree_view_get_cell_area(), which returns only the cell
13002  * itself, excluding surrounding borders and the tree expander area.
13003  *
13004  **/
13005 void
13006 gtk_tree_view_get_background_area (GtkTreeView        *tree_view,
13007                                    GtkTreePath        *path,
13008                                    GtkTreeViewColumn  *column,
13009                                    GdkRectangle       *rect)
13010 {
13011   GtkRBTree *tree = NULL;
13012   GtkRBNode *node = NULL;
13013
13014   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
13015   g_return_if_fail (column == NULL || GTK_IS_TREE_VIEW_COLUMN (column));
13016   g_return_if_fail (rect != NULL);
13017
13018   rect->x = 0;
13019   rect->y = 0;
13020   rect->width = 0;
13021   rect->height = 0;
13022
13023   if (path)
13024     {
13025       /* Get vertical coords */
13026
13027       if (!_gtk_tree_view_find_node (tree_view, path, &tree, &node) &&
13028           tree == NULL)
13029         return;
13030
13031       rect->y = BACKGROUND_FIRST_PIXEL (tree_view, tree, node);
13032
13033       rect->height = ROW_HEIGHT (tree_view, BACKGROUND_HEIGHT (node));
13034     }
13035
13036   if (column)
13037     {
13038       gint x2 = 0;
13039
13040       gtk_tree_view_get_background_xrange (tree_view, tree, column, &rect->x, &x2);
13041       rect->width = x2 - rect->x;
13042     }
13043 }
13044
13045 /**
13046  * gtk_tree_view_get_visible_rect:
13047  * @tree_view: a #GtkTreeView
13048  * @visible_rect: rectangle to fill
13049  *
13050  * Fills @visible_rect with the currently-visible region of the
13051  * buffer, in tree coordinates. Convert to bin_window coordinates with
13052  * gtk_tree_view_convert_tree_to_bin_window_coords().
13053  * Tree coordinates start at 0,0 for row 0 of the tree, and cover the entire
13054  * scrollable area of the tree.
13055  **/
13056 void
13057 gtk_tree_view_get_visible_rect (GtkTreeView  *tree_view,
13058                                 GdkRectangle *visible_rect)
13059 {
13060   GtkWidget *widget;
13061
13062   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
13063
13064   widget = GTK_WIDGET (tree_view);
13065
13066   if (visible_rect)
13067     {
13068       visible_rect->x = tree_view->priv->hadjustment->value;
13069       visible_rect->y = tree_view->priv->vadjustment->value;
13070       visible_rect->width = widget->allocation.width;
13071       visible_rect->height = widget->allocation.height - TREE_VIEW_HEADER_HEIGHT (tree_view);
13072     }
13073 }
13074
13075 /**
13076  * gtk_tree_view_widget_to_tree_coords:
13077  * @tree_view: a #GtkTreeView
13078  * @wx: X coordinate relative to bin_window
13079  * @wy: Y coordinate relative to bin_window
13080  * @tx: return location for tree X coordinate
13081  * @ty: return location for tree Y coordinate
13082  *
13083  * Converts bin_window coordinates to coordinates for the
13084  * tree (the full scrollable area of the tree).
13085  *
13086  * Deprecated: 2.12: Due to historial reasons the name of this function is
13087  * incorrect.  For converting coordinates relative to the widget to
13088  * bin_window coordinates, please see
13089  * gtk_tree_view_convert_widget_to_bin_window_coords().
13090  *
13091  **/
13092 void
13093 gtk_tree_view_widget_to_tree_coords (GtkTreeView *tree_view,
13094                                       gint         wx,
13095                                       gint         wy,
13096                                       gint        *tx,
13097                                       gint        *ty)
13098 {
13099   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
13100
13101   if (tx)
13102     *tx = wx + tree_view->priv->hadjustment->value;
13103   if (ty)
13104     *ty = wy + tree_view->priv->dy;
13105 }
13106
13107 /**
13108  * gtk_tree_view_tree_to_widget_coords:
13109  * @tree_view: a #GtkTreeView
13110  * @tx: tree X coordinate
13111  * @ty: tree Y coordinate
13112  * @wx: return location for X coordinate relative to bin_window
13113  * @wy: return location for Y coordinate relative to bin_window
13114  *
13115  * Converts tree coordinates (coordinates in full scrollable area of the tree)
13116  * to bin_window coordinates.
13117  *
13118  * Deprecated: 2.12: Due to historial reasons the name of this function is
13119  * incorrect.  For converting bin_window coordinates to coordinates relative
13120  * to bin_window, please see
13121  * gtk_tree_view_convert_bin_window_to_widget_coords().
13122  *
13123  **/
13124 void
13125 gtk_tree_view_tree_to_widget_coords (GtkTreeView *tree_view,
13126                                      gint         tx,
13127                                      gint         ty,
13128                                      gint        *wx,
13129                                      gint        *wy)
13130 {
13131   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
13132
13133   if (wx)
13134     *wx = tx - tree_view->priv->hadjustment->value;
13135   if (wy)
13136     *wy = ty - tree_view->priv->dy;
13137 }
13138
13139
13140 /**
13141  * gtk_tree_view_convert_widget_to_tree_coords:
13142  * @tree_view: a #GtkTreeView
13143  * @wx: X coordinate relative to the widget
13144  * @wy: Y coordinate relative to the widget
13145  * @tx: return location for tree X coordinate
13146  * @ty: return location for tree Y coordinate
13147  *
13148  * Converts widget coordinates to coordinates for the
13149  * tree (the full scrollable area of the tree).
13150  *
13151  * Since: 2.12
13152  **/
13153 void
13154 gtk_tree_view_convert_widget_to_tree_coords (GtkTreeView *tree_view,
13155                                              gint         wx,
13156                                              gint         wy,
13157                                              gint        *tx,
13158                                              gint        *ty)
13159 {
13160   gint x, y;
13161
13162   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
13163
13164   gtk_tree_view_convert_widget_to_bin_window_coords (tree_view,
13165                                                      wx, wy,
13166                                                      &x, &y);
13167   gtk_tree_view_convert_bin_window_to_tree_coords (tree_view,
13168                                                    x, y,
13169                                                    tx, ty);
13170 }
13171
13172 /**
13173  * gtk_tree_view_convert_tree_to_widget_coords:
13174  * @tree_view: a #GtkTreeView
13175  * @tx: X coordinate relative to the tree
13176  * @ty: Y coordinate relative to the tree
13177  * @wx: return location for widget X coordinate
13178  * @wy: return location for widget Y coordinate
13179  *
13180  * Converts tree coordinates (coordinates in full scrollable area of the tree)
13181  * to widget coordinates.
13182  *
13183  * Since: 2.12
13184  **/
13185 void
13186 gtk_tree_view_convert_tree_to_widget_coords (GtkTreeView *tree_view,
13187                                              gint         tx,
13188                                              gint         ty,
13189                                              gint        *wx,
13190                                              gint        *wy)
13191 {
13192   gint x, y;
13193
13194   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
13195
13196   gtk_tree_view_convert_tree_to_bin_window_coords (tree_view,
13197                                                    tx, ty,
13198                                                    &x, &y);
13199   gtk_tree_view_convert_bin_window_to_widget_coords (tree_view,
13200                                                      x, y,
13201                                                      wx, wy);
13202 }
13203
13204 /**
13205  * gtk_tree_view_convert_widget_to_bin_window_coords:
13206  * @tree_view: a #GtkTreeView
13207  * @wx: X coordinate relative to the widget
13208  * @wy: Y coordinate relative to the widget
13209  * @bx: return location for bin_window X coordinate
13210  * @by: return location for bin_window Y coordinate
13211  *
13212  * Converts widget coordinates to coordinates for the bin_window
13213  * (see gtk_tree_view_get_bin_window()).
13214  *
13215  * Since: 2.12
13216  **/
13217 void
13218 gtk_tree_view_convert_widget_to_bin_window_coords (GtkTreeView *tree_view,
13219                                                    gint         wx,
13220                                                    gint         wy,
13221                                                    gint        *bx,
13222                                                    gint        *by)
13223 {
13224   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
13225
13226   if (bx)
13227     *bx = wx + tree_view->priv->hadjustment->value;
13228   if (by)
13229     *by = wy - TREE_VIEW_HEADER_HEIGHT (tree_view);
13230 }
13231
13232 /**
13233  * gtk_tree_view_convert_bin_window_to_widget_coords:
13234  * @tree_view: a #GtkTreeView
13235  * @bx: bin_window X coordinate
13236  * @by: bin_window Y coordinate
13237  * @wx: return location for widget X coordinate
13238  * @wy: return location for widget Y coordinate
13239  *
13240  * Converts bin_window coordinates (see gtk_tree_view_get_bin_window())
13241  * to widget relative coordinates.
13242  *
13243  * Since: 2.12
13244  **/
13245 void
13246 gtk_tree_view_convert_bin_window_to_widget_coords (GtkTreeView *tree_view,
13247                                                    gint         bx,
13248                                                    gint         by,
13249                                                    gint        *wx,
13250                                                    gint        *wy)
13251 {
13252   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
13253
13254   if (wx)
13255     *wx = bx - tree_view->priv->hadjustment->value;
13256   if (wy)
13257     *wy = by + TREE_VIEW_HEADER_HEIGHT (tree_view);
13258 }
13259
13260 /**
13261  * gtk_tree_view_convert_tree_to_bin_window_coords:
13262  * @tree_view: a #GtkTreeView
13263  * @tx: tree X coordinate
13264  * @ty: tree Y coordinate
13265  * @bx: return location for X coordinate relative to bin_window
13266  * @by: return location for Y coordinate relative to bin_window
13267  *
13268  * Converts tree coordinates (coordinates in full scrollable area of the tree)
13269  * to bin_window coordinates.
13270  *
13271  * Since: 2.12
13272  **/
13273 void
13274 gtk_tree_view_convert_tree_to_bin_window_coords (GtkTreeView *tree_view,
13275                                                  gint         tx,
13276                                                  gint         ty,
13277                                                  gint        *bx,
13278                                                  gint        *by)
13279 {
13280   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
13281
13282   if (bx)
13283     *bx = tx;
13284   if (by)
13285     *by = ty - tree_view->priv->dy;
13286 }
13287
13288 /**
13289  * gtk_tree_view_convert_bin_window_to_tree_coords:
13290  * @tree_view: a #GtkTreeView
13291  * @bx: X coordinate relative to bin_window
13292  * @by: Y coordinate relative to bin_window
13293  * @tx: return location for tree X coordinate
13294  * @ty: return location for tree Y coordinate
13295  *
13296  * Converts bin_window coordinates to coordinates for the
13297  * tree (the full scrollable area of the tree).
13298  *
13299  * Since: 2.12
13300  **/
13301 void
13302 gtk_tree_view_convert_bin_window_to_tree_coords (GtkTreeView *tree_view,
13303                                                  gint         bx,
13304                                                  gint         by,
13305                                                  gint        *tx,
13306                                                  gint        *ty)
13307 {
13308   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
13309
13310   if (tx)
13311     *tx = bx;
13312   if (ty)
13313     *ty = by + tree_view->priv->dy;
13314 }
13315
13316
13317
13318 /**
13319  * gtk_tree_view_get_visible_range:
13320  * @tree_view: A #GtkTreeView
13321  * @start_path: (allow-none): Return location for start of region, or %NULL.
13322  * @end_path: (allow-none): Return location for end of region, or %NULL.
13323  *
13324  * Sets @start_path and @end_path to be the first and last visible path.
13325  * Note that there may be invisible paths in between.
13326  *
13327  * The paths should be freed with gtk_tree_path_free() after use.
13328  *
13329  * Returns: %TRUE, if valid paths were placed in @start_path and @end_path.
13330  *
13331  * Since: 2.8
13332  **/
13333 gboolean
13334 gtk_tree_view_get_visible_range (GtkTreeView  *tree_view,
13335                                  GtkTreePath **start_path,
13336                                  GtkTreePath **end_path)
13337 {
13338   GtkRBTree *tree;
13339   GtkRBNode *node;
13340   gboolean retval;
13341
13342   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), FALSE);
13343
13344   if (!tree_view->priv->tree)
13345     return FALSE;
13346
13347   retval = TRUE;
13348
13349   if (start_path)
13350     {
13351       _gtk_rbtree_find_offset (tree_view->priv->tree,
13352                                TREE_WINDOW_Y_TO_RBTREE_Y (tree_view, 0),
13353                                &tree, &node);
13354       if (node)
13355         *start_path = _gtk_tree_view_find_path (tree_view, tree, node);
13356       else
13357         retval = FALSE;
13358     }
13359
13360   if (end_path)
13361     {
13362       gint y;
13363
13364       if (tree_view->priv->height < tree_view->priv->vadjustment->page_size)
13365         y = tree_view->priv->height - 1;
13366       else
13367         y = TREE_WINDOW_Y_TO_RBTREE_Y (tree_view, tree_view->priv->vadjustment->page_size) - 1;
13368
13369       _gtk_rbtree_find_offset (tree_view->priv->tree, y, &tree, &node);
13370       if (node)
13371         *end_path = _gtk_tree_view_find_path (tree_view, tree, node);
13372       else
13373         retval = FALSE;
13374     }
13375
13376   return retval;
13377 }
13378
13379 static void
13380 unset_reorderable (GtkTreeView *tree_view)
13381 {
13382   if (tree_view->priv->reorderable)
13383     {
13384       tree_view->priv->reorderable = FALSE;
13385       g_object_notify (G_OBJECT (tree_view), "reorderable");
13386     }
13387 }
13388
13389 /**
13390  * gtk_tree_view_enable_model_drag_source:
13391  * @tree_view: a #GtkTreeView
13392  * @start_button_mask: Mask of allowed buttons to start drag
13393  * @targets: the table of targets that the drag will support
13394  * @n_targets: the number of items in @targets
13395  * @actions: the bitmask of possible actions for a drag from this
13396  *    widget
13397  *
13398  * Turns @tree_view into a drag source for automatic DND. Calling this
13399  * method sets #GtkTreeView:reorderable to %FALSE.
13400  **/
13401 void
13402 gtk_tree_view_enable_model_drag_source (GtkTreeView              *tree_view,
13403                                         GdkModifierType           start_button_mask,
13404                                         const GtkTargetEntry     *targets,
13405                                         gint                      n_targets,
13406                                         GdkDragAction             actions)
13407 {
13408   TreeViewDragInfo *di;
13409
13410   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
13411
13412   gtk_drag_source_set (GTK_WIDGET (tree_view),
13413                        0,
13414                        targets,
13415                        n_targets,
13416                        actions);
13417
13418   di = ensure_info (tree_view);
13419
13420   di->start_button_mask = start_button_mask;
13421   di->source_actions = actions;
13422   di->source_set = TRUE;
13423
13424   unset_reorderable (tree_view);
13425 }
13426
13427 /**
13428  * gtk_tree_view_enable_model_drag_dest:
13429  * @tree_view: a #GtkTreeView
13430  * @targets: the table of targets that the drag will support
13431  * @n_targets: the number of items in @targets
13432  * @actions: the bitmask of possible actions for a drag from this
13433  *    widget
13434  *
13435  * Turns @tree_view into a drop destination for automatic DND. Calling
13436  * this method sets #GtkTreeView:reorderable to %FALSE.
13437  **/
13438 void
13439 gtk_tree_view_enable_model_drag_dest (GtkTreeView              *tree_view,
13440                                       const GtkTargetEntry     *targets,
13441                                       gint                      n_targets,
13442                                       GdkDragAction             actions)
13443 {
13444   TreeViewDragInfo *di;
13445
13446   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
13447
13448   gtk_drag_dest_set (GTK_WIDGET (tree_view),
13449                      0,
13450                      targets,
13451                      n_targets,
13452                      actions);
13453
13454   di = ensure_info (tree_view);
13455   di->dest_set = TRUE;
13456
13457   unset_reorderable (tree_view);
13458 }
13459
13460 /**
13461  * gtk_tree_view_unset_rows_drag_source:
13462  * @tree_view: a #GtkTreeView
13463  *
13464  * Undoes the effect of
13465  * gtk_tree_view_enable_model_drag_source(). Calling this method sets
13466  * #GtkTreeView:reorderable to %FALSE.
13467  **/
13468 void
13469 gtk_tree_view_unset_rows_drag_source (GtkTreeView *tree_view)
13470 {
13471   TreeViewDragInfo *di;
13472
13473   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
13474
13475   di = get_info (tree_view);
13476
13477   if (di)
13478     {
13479       if (di->source_set)
13480         {
13481           gtk_drag_source_unset (GTK_WIDGET (tree_view));
13482           di->source_set = FALSE;
13483         }
13484
13485       if (!di->dest_set && !di->source_set)
13486         remove_info (tree_view);
13487     }
13488
13489   unset_reorderable (tree_view);
13490 }
13491
13492 /**
13493  * gtk_tree_view_unset_rows_drag_dest:
13494  * @tree_view: a #GtkTreeView
13495  *
13496  * Undoes the effect of
13497  * gtk_tree_view_enable_model_drag_dest(). Calling this method sets
13498  * #GtkTreeView:reorderable to %FALSE.
13499  **/
13500 void
13501 gtk_tree_view_unset_rows_drag_dest (GtkTreeView *tree_view)
13502 {
13503   TreeViewDragInfo *di;
13504
13505   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
13506
13507   di = get_info (tree_view);
13508
13509   if (di)
13510     {
13511       if (di->dest_set)
13512         {
13513           gtk_drag_dest_unset (GTK_WIDGET (tree_view));
13514           di->dest_set = FALSE;
13515         }
13516
13517       if (!di->dest_set && !di->source_set)
13518         remove_info (tree_view);
13519     }
13520
13521   unset_reorderable (tree_view);
13522 }
13523
13524 /**
13525  * gtk_tree_view_set_drag_dest_row:
13526  * @tree_view: a #GtkTreeView
13527  * @path: (allow-none): The path of the row to highlight, or %NULL.
13528  * @pos: Specifies whether to drop before, after or into the row
13529  *
13530  * Sets the row that is highlighted for feedback.
13531  **/
13532 void
13533 gtk_tree_view_set_drag_dest_row (GtkTreeView            *tree_view,
13534                                  GtkTreePath            *path,
13535                                  GtkTreeViewDropPosition pos)
13536 {
13537   GtkTreePath *current_dest;
13538
13539   /* Note; this function is exported to allow a custom DND
13540    * implementation, so it can't touch TreeViewDragInfo
13541    */
13542
13543   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
13544
13545   current_dest = NULL;
13546
13547   if (tree_view->priv->drag_dest_row)
13548     {
13549       current_dest = gtk_tree_row_reference_get_path (tree_view->priv->drag_dest_row);
13550       gtk_tree_row_reference_free (tree_view->priv->drag_dest_row);
13551     }
13552
13553   /* special case a drop on an empty model */
13554   tree_view->priv->empty_view_drop = 0;
13555
13556   if (pos == GTK_TREE_VIEW_DROP_BEFORE && path
13557       && gtk_tree_path_get_depth (path) == 1
13558       && gtk_tree_path_get_indices (path)[0] == 0)
13559     {
13560       gint n_children;
13561
13562       n_children = gtk_tree_model_iter_n_children (tree_view->priv->model,
13563                                                    NULL);
13564
13565       if (!n_children)
13566         tree_view->priv->empty_view_drop = 1;
13567     }
13568
13569   tree_view->priv->drag_dest_pos = pos;
13570
13571   if (path)
13572     {
13573       tree_view->priv->drag_dest_row =
13574         gtk_tree_row_reference_new_proxy (G_OBJECT (tree_view), tree_view->priv->model, path);
13575       gtk_tree_view_queue_draw_path (tree_view, path, NULL);
13576     }
13577   else
13578     tree_view->priv->drag_dest_row = NULL;
13579
13580   if (current_dest)
13581     {
13582       GtkRBTree *tree, *new_tree;
13583       GtkRBNode *node, *new_node;
13584
13585       _gtk_tree_view_find_node (tree_view, current_dest, &tree, &node);
13586       _gtk_tree_view_queue_draw_node (tree_view, tree, node, NULL);
13587
13588       if (tree && node)
13589         {
13590           _gtk_rbtree_next_full (tree, node, &new_tree, &new_node);
13591           if (new_tree && new_node)
13592             _gtk_tree_view_queue_draw_node (tree_view, new_tree, new_node, NULL);
13593
13594           _gtk_rbtree_prev_full (tree, node, &new_tree, &new_node);
13595           if (new_tree && new_node)
13596             _gtk_tree_view_queue_draw_node (tree_view, new_tree, new_node, NULL);
13597         }
13598       gtk_tree_path_free (current_dest);
13599     }
13600 }
13601
13602 /**
13603  * gtk_tree_view_get_drag_dest_row:
13604  * @tree_view: a #GtkTreeView
13605  * @path: (allow-none): Return location for the path of the highlighted row, or %NULL.
13606  * @pos: (allow-none): Return location for the drop position, or %NULL
13607  *
13608  * Gets information about the row that is highlighted for feedback.
13609  **/
13610 void
13611 gtk_tree_view_get_drag_dest_row (GtkTreeView              *tree_view,
13612                                  GtkTreePath             **path,
13613                                  GtkTreeViewDropPosition  *pos)
13614 {
13615   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
13616
13617   if (path)
13618     {
13619       if (tree_view->priv->drag_dest_row)
13620         *path = gtk_tree_row_reference_get_path (tree_view->priv->drag_dest_row);
13621       else
13622         {
13623           if (tree_view->priv->empty_view_drop)
13624             *path = gtk_tree_path_new_from_indices (0, -1);
13625           else
13626             *path = NULL;
13627         }
13628     }
13629
13630   if (pos)
13631     *pos = tree_view->priv->drag_dest_pos;
13632 }
13633
13634 /**
13635  * gtk_tree_view_get_dest_row_at_pos:
13636  * @tree_view: a #GtkTreeView
13637  * @drag_x: the position to determine the destination row for
13638  * @drag_y: the position to determine the destination row for
13639  * @path: (allow-none): Return location for the path of the highlighted row, or %NULL.
13640  * @pos: (allow-none): Return location for the drop position, or %NULL
13641  *
13642  * Determines the destination row for a given position.  @drag_x and
13643  * @drag_y are expected to be in widget coordinates.  This function is only
13644  * meaningful if @tree_view is realized.  Therefore this function will always
13645  * return %FALSE if @tree_view is not realized or does not have a model.
13646  *
13647  * Return value: whether there is a row at the given position, %TRUE if this
13648  * is indeed the case.
13649  **/
13650 gboolean
13651 gtk_tree_view_get_dest_row_at_pos (GtkTreeView             *tree_view,
13652                                    gint                     drag_x,
13653                                    gint                     drag_y,
13654                                    GtkTreePath            **path,
13655                                    GtkTreeViewDropPosition *pos)
13656 {
13657   gint cell_y;
13658   gint bin_x, bin_y;
13659   gdouble offset_into_row;
13660   gdouble third;
13661   GdkRectangle cell;
13662   GtkTreeViewColumn *column = NULL;
13663   GtkTreePath *tmp_path = NULL;
13664
13665   /* Note; this function is exported to allow a custom DND
13666    * implementation, so it can't touch TreeViewDragInfo
13667    */
13668
13669   g_return_val_if_fail (tree_view != NULL, FALSE);
13670   g_return_val_if_fail (drag_x >= 0, FALSE);
13671   g_return_val_if_fail (drag_y >= 0, FALSE);
13672
13673   if (path)
13674     *path = NULL;
13675
13676   if (tree_view->priv->bin_window == NULL)
13677     return FALSE;
13678
13679   if (tree_view->priv->tree == NULL)
13680     return FALSE;
13681
13682   /* If in the top third of a row, we drop before that row; if
13683    * in the bottom third, drop after that row; if in the middle,
13684    * and the row has children, drop into the row.
13685    */
13686   gtk_tree_view_convert_widget_to_bin_window_coords (tree_view, drag_x, drag_y,
13687                                                      &bin_x, &bin_y);
13688
13689   if (!gtk_tree_view_get_path_at_pos (tree_view,
13690                                       bin_x,
13691                                       bin_y,
13692                                       &tmp_path,
13693                                       &column,
13694                                       NULL,
13695                                       &cell_y))
13696     return FALSE;
13697
13698   gtk_tree_view_get_background_area (tree_view, tmp_path, column,
13699                                      &cell);
13700
13701   offset_into_row = cell_y;
13702
13703   if (path)
13704     *path = tmp_path;
13705   else
13706     gtk_tree_path_free (tmp_path);
13707
13708   tmp_path = NULL;
13709
13710   third = cell.height / 3.0;
13711
13712   if (pos)
13713     {
13714       if (offset_into_row < third)
13715         {
13716           *pos = GTK_TREE_VIEW_DROP_BEFORE;
13717         }
13718       else if (offset_into_row < (cell.height / 2.0))
13719         {
13720           *pos = GTK_TREE_VIEW_DROP_INTO_OR_BEFORE;
13721         }
13722       else if (offset_into_row < third * 2.0)
13723         {
13724           *pos = GTK_TREE_VIEW_DROP_INTO_OR_AFTER;
13725         }
13726       else
13727         {
13728           *pos = GTK_TREE_VIEW_DROP_AFTER;
13729         }
13730     }
13731
13732   return TRUE;
13733 }
13734
13735
13736
13737 /* KEEP IN SYNC WITH GTK_TREE_VIEW_BIN_EXPOSE */
13738 /**
13739  * gtk_tree_view_create_row_drag_icon:
13740  * @tree_view: a #GtkTreeView
13741  * @path: a #GtkTreePath in @tree_view
13742  *
13743  * Creates a #GdkPixmap representation of the row at @path.
13744  * This image is used for a drag icon.
13745  *
13746  * Return value: a newly-allocated pixmap of the drag icon.
13747  **/
13748 GdkPixmap *
13749 gtk_tree_view_create_row_drag_icon (GtkTreeView  *tree_view,
13750                                     GtkTreePath  *path)
13751 {
13752   GtkTreeIter   iter;
13753   GtkRBTree    *tree;
13754   GtkRBNode    *node;
13755   gint cell_offset;
13756   GList *list;
13757   GdkRectangle background_area;
13758   GdkRectangle expose_area;
13759   GtkWidget *widget;
13760   gint depth;
13761   /* start drawing inside the black outline */
13762   gint x = 1, y = 1;
13763   GdkDrawable *drawable;
13764   gint bin_window_width;
13765   gboolean is_separator = FALSE;
13766   gboolean rtl;
13767
13768   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), NULL);
13769   g_return_val_if_fail (path != NULL, NULL);
13770
13771   widget = GTK_WIDGET (tree_view);
13772
13773   if (!gtk_widget_get_realized (widget))
13774     return NULL;
13775
13776   depth = gtk_tree_path_get_depth (path);
13777
13778   _gtk_tree_view_find_node (tree_view,
13779                             path,
13780                             &tree,
13781                             &node);
13782
13783   if (tree == NULL)
13784     return NULL;
13785
13786   if (!gtk_tree_model_get_iter (tree_view->priv->model,
13787                                 &iter,
13788                                 path))
13789     return NULL;
13790
13791   is_separator = row_is_separator (tree_view, &iter, NULL);
13792
13793   cell_offset = x;
13794
13795   background_area.y = y;
13796   background_area.height = ROW_HEIGHT (tree_view, BACKGROUND_HEIGHT (node));
13797
13798   gdk_drawable_get_size (tree_view->priv->bin_window,
13799                          &bin_window_width, NULL);
13800
13801   drawable = gdk_pixmap_new (tree_view->priv->bin_window,
13802                              bin_window_width + 2,
13803                              background_area.height + 2,
13804                              -1);
13805
13806   expose_area.x = 0;
13807   expose_area.y = 0;
13808   expose_area.width = bin_window_width + 2;
13809   expose_area.height = background_area.height + 2;
13810
13811   gdk_draw_rectangle (drawable,
13812                       widget->style->base_gc [GTK_WIDGET_STATE (widget)],
13813                       TRUE,
13814                       0, 0,
13815                       bin_window_width + 2,
13816                       background_area.height + 2);
13817
13818   rtl = gtk_widget_get_direction (GTK_WIDGET (tree_view)) == GTK_TEXT_DIR_RTL;
13819
13820   for (list = (rtl ? g_list_last (tree_view->priv->columns) : g_list_first (tree_view->priv->columns));
13821       list;
13822       list = (rtl ? list->prev : list->next))
13823     {
13824       GtkTreeViewColumn *column = list->data;
13825       GdkRectangle cell_area;
13826       gint vertical_separator;
13827
13828       if (!column->visible)
13829         continue;
13830
13831       gtk_tree_view_column_cell_set_cell_data (column, tree_view->priv->model, &iter,
13832                                                GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_PARENT),
13833                                                node->children?TRUE:FALSE);
13834
13835       background_area.x = cell_offset;
13836       background_area.width = column->width;
13837
13838       gtk_widget_style_get (widget,
13839                             "vertical-separator", &vertical_separator,
13840                             NULL);
13841
13842       cell_area = background_area;
13843
13844       cell_area.y += vertical_separator / 2;
13845       cell_area.height -= vertical_separator;
13846
13847       if (gtk_tree_view_is_expander_column (tree_view, column))
13848         {
13849           if (!rtl)
13850             cell_area.x += (depth - 1) * tree_view->priv->level_indentation;
13851           cell_area.width -= (depth - 1) * tree_view->priv->level_indentation;
13852
13853           if (TREE_VIEW_DRAW_EXPANDERS(tree_view))
13854             {
13855               if (!rtl)
13856                 cell_area.x += depth * tree_view->priv->expander_size;
13857               cell_area.width -= depth * tree_view->priv->expander_size;
13858             }
13859         }
13860
13861       if (gtk_tree_view_column_cell_is_visible (column))
13862         {
13863           if (is_separator)
13864             gtk_paint_hline (widget->style,
13865                              drawable,
13866                              GTK_STATE_NORMAL,
13867                              &cell_area,
13868                              widget,
13869                              NULL,
13870                              cell_area.x,
13871                              cell_area.x + cell_area.width,
13872                              cell_area.y + cell_area.height / 2);
13873           else
13874             _gtk_tree_view_column_cell_render (column,
13875                                                drawable,
13876                                                &background_area,
13877                                                &cell_area,
13878                                                &expose_area,
13879                                                0);
13880         }
13881       cell_offset += column->width;
13882     }
13883
13884   gdk_draw_rectangle (drawable,
13885                       widget->style->black_gc,
13886                       FALSE,
13887                       0, 0,
13888                       bin_window_width + 1,
13889                       background_area.height + 1);
13890
13891   return drawable;
13892 }
13893
13894
13895 /**
13896  * gtk_tree_view_set_destroy_count_func:
13897  * @tree_view: A #GtkTreeView
13898  * @func: (allow-none): Function to be called when a view row is destroyed, or %NULL
13899  * @data: (allow-none): User data to be passed to @func, or %NULL
13900  * @destroy: (allow-none): Destroy notifier for @data, or %NULL
13901  *
13902  * This function should almost never be used.  It is meant for private use by
13903  * ATK for determining the number of visible children that are removed when the
13904  * user collapses a row, or a row is deleted.
13905  **/
13906 void
13907 gtk_tree_view_set_destroy_count_func (GtkTreeView             *tree_view,
13908                                       GtkTreeDestroyCountFunc  func,
13909                                       gpointer                 data,
13910                                       GDestroyNotify           destroy)
13911 {
13912   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
13913
13914   if (tree_view->priv->destroy_count_destroy)
13915     tree_view->priv->destroy_count_destroy (tree_view->priv->destroy_count_data);
13916
13917   tree_view->priv->destroy_count_func = func;
13918   tree_view->priv->destroy_count_data = data;
13919   tree_view->priv->destroy_count_destroy = destroy;
13920 }
13921
13922
13923 /*
13924  * Interactive search
13925  */
13926
13927 /**
13928  * gtk_tree_view_set_enable_search:
13929  * @tree_view: A #GtkTreeView
13930  * @enable_search: %TRUE, if the user can search interactively
13931  *
13932  * If @enable_search is set, then the user can type in text to search through
13933  * the tree interactively (this is sometimes called "typeahead find").
13934  *
13935  * Note that even if this is %FALSE, the user can still initiate a search
13936  * using the "start-interactive-search" key binding.
13937  */
13938 void
13939 gtk_tree_view_set_enable_search (GtkTreeView *tree_view,
13940                                  gboolean     enable_search)
13941 {
13942   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
13943
13944   enable_search = !!enable_search;
13945
13946   if (tree_view->priv->enable_search != enable_search)
13947     {
13948        tree_view->priv->enable_search = enable_search;
13949        g_object_notify (G_OBJECT (tree_view), "enable-search");
13950     }
13951 }
13952
13953 /**
13954  * gtk_tree_view_get_enable_search:
13955  * @tree_view: A #GtkTreeView
13956  *
13957  * Returns whether or not the tree allows to start interactive searching
13958  * by typing in text.
13959  *
13960  * Return value: whether or not to let the user search interactively
13961  */
13962 gboolean
13963 gtk_tree_view_get_enable_search (GtkTreeView *tree_view)
13964 {
13965   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), FALSE);
13966
13967   return tree_view->priv->enable_search;
13968 }
13969
13970
13971 /**
13972  * gtk_tree_view_get_search_column:
13973  * @tree_view: A #GtkTreeView
13974  *
13975  * Gets the column searched on by the interactive search code.
13976  *
13977  * Return value: the column the interactive search code searches in.
13978  */
13979 gint
13980 gtk_tree_view_get_search_column (GtkTreeView *tree_view)
13981 {
13982   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), -1);
13983
13984   return (tree_view->priv->search_column);
13985 }
13986
13987 /**
13988  * gtk_tree_view_set_search_column:
13989  * @tree_view: A #GtkTreeView
13990  * @column: the column of the model to search in, or -1 to disable searching
13991  *
13992  * Sets @column as the column where the interactive search code should
13993  * search in for the current model.
13994  *
13995  * If the search column is set, users can use the "start-interactive-search"
13996  * key binding to bring up search popup. The enable-search property controls
13997  * whether simply typing text will also start an interactive search.
13998  *
13999  * Note that @column refers to a column of the current model. The search
14000  * column is reset to -1 when the model is changed.
14001  */
14002 void
14003 gtk_tree_view_set_search_column (GtkTreeView *tree_view,
14004                                  gint         column)
14005 {
14006   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
14007   g_return_if_fail (column >= -1);
14008
14009   if (tree_view->priv->search_column == column)
14010     return;
14011
14012   tree_view->priv->search_column = column;
14013   g_object_notify (G_OBJECT (tree_view), "search-column");
14014 }
14015
14016 /**
14017  * gtk_tree_view_get_search_equal_func:
14018  * @tree_view: A #GtkTreeView
14019  *
14020  * Returns the compare function currently in use.
14021  *
14022  * Return value: the currently used compare function for the search code.
14023  */
14024
14025 GtkTreeViewSearchEqualFunc
14026 gtk_tree_view_get_search_equal_func (GtkTreeView *tree_view)
14027 {
14028   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), NULL);
14029
14030   return tree_view->priv->search_equal_func;
14031 }
14032
14033 /**
14034  * gtk_tree_view_set_search_equal_func:
14035  * @tree_view: A #GtkTreeView
14036  * @search_equal_func: the compare function to use during the search
14037  * @search_user_data: (allow-none): user data to pass to @search_equal_func, or %NULL
14038  * @search_destroy: (allow-none): Destroy notifier for @search_user_data, or %NULL
14039  *
14040  * Sets the compare function for the interactive search capabilities; note
14041  * that somewhat like strcmp() returning 0 for equality
14042  * #GtkTreeViewSearchEqualFunc returns %FALSE on matches.
14043  **/
14044 void
14045 gtk_tree_view_set_search_equal_func (GtkTreeView                *tree_view,
14046                                      GtkTreeViewSearchEqualFunc  search_equal_func,
14047                                      gpointer                    search_user_data,
14048                                      GDestroyNotify              search_destroy)
14049 {
14050   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
14051   g_return_if_fail (search_equal_func != NULL);
14052
14053   if (tree_view->priv->search_destroy)
14054     tree_view->priv->search_destroy (tree_view->priv->search_user_data);
14055
14056   tree_view->priv->search_equal_func = search_equal_func;
14057   tree_view->priv->search_user_data = search_user_data;
14058   tree_view->priv->search_destroy = search_destroy;
14059   if (tree_view->priv->search_equal_func == NULL)
14060     tree_view->priv->search_equal_func = gtk_tree_view_search_equal_func;
14061 }
14062
14063 /**
14064  * gtk_tree_view_get_search_entry:
14065  * @tree_view: A #GtkTreeView
14066  *
14067  * Returns the #GtkEntry which is currently in use as interactive search
14068  * entry for @tree_view.  In case the built-in entry is being used, %NULL
14069  * will be returned.
14070  *
14071  * Return value: the entry currently in use as search entry.
14072  *
14073  * Since: 2.10
14074  */
14075 GtkEntry *
14076 gtk_tree_view_get_search_entry (GtkTreeView *tree_view)
14077 {
14078   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), NULL);
14079
14080   if (tree_view->priv->search_custom_entry_set)
14081     return GTK_ENTRY (tree_view->priv->search_entry);
14082
14083   return NULL;
14084 }
14085
14086 /**
14087  * gtk_tree_view_set_search_entry:
14088  * @tree_view: A #GtkTreeView
14089  * @entry: (allow-none): the entry the interactive search code of @tree_view should use or %NULL
14090  *
14091  * Sets the entry which the interactive search code will use for this
14092  * @tree_view.  This is useful when you want to provide a search entry
14093  * in our interface at all time at a fixed position.  Passing %NULL for
14094  * @entry will make the interactive search code use the built-in popup
14095  * entry again.
14096  *
14097  * Since: 2.10
14098  */
14099 void
14100 gtk_tree_view_set_search_entry (GtkTreeView *tree_view,
14101                                 GtkEntry    *entry)
14102 {
14103   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
14104   g_return_if_fail (entry == NULL || GTK_IS_ENTRY (entry));
14105
14106   if (tree_view->priv->search_custom_entry_set)
14107     {
14108       if (tree_view->priv->search_entry_changed_id)
14109         {
14110           g_signal_handler_disconnect (tree_view->priv->search_entry,
14111                                        tree_view->priv->search_entry_changed_id);
14112           tree_view->priv->search_entry_changed_id = 0;
14113         }
14114       g_signal_handlers_disconnect_by_func (tree_view->priv->search_entry,
14115                                             G_CALLBACK (gtk_tree_view_search_key_press_event),
14116                                             tree_view);
14117
14118       g_object_unref (tree_view->priv->search_entry);
14119     }
14120   else if (tree_view->priv->search_window)
14121     {
14122       gtk_widget_destroy (tree_view->priv->search_window);
14123
14124       tree_view->priv->search_window = NULL;
14125     }
14126
14127   if (entry)
14128     {
14129       tree_view->priv->search_entry = g_object_ref (entry);
14130       tree_view->priv->search_custom_entry_set = TRUE;
14131
14132       if (tree_view->priv->search_entry_changed_id == 0)
14133         {
14134           tree_view->priv->search_entry_changed_id =
14135             g_signal_connect (tree_view->priv->search_entry, "changed",
14136                               G_CALLBACK (gtk_tree_view_search_init),
14137                               tree_view);
14138         }
14139
14140         g_signal_connect (tree_view->priv->search_entry, "key-press-event",
14141                           G_CALLBACK (gtk_tree_view_search_key_press_event),
14142                           tree_view);
14143
14144         gtk_tree_view_search_init (tree_view->priv->search_entry, tree_view);
14145     }
14146   else
14147     {
14148       tree_view->priv->search_entry = NULL;
14149       tree_view->priv->search_custom_entry_set = FALSE;
14150     }
14151 }
14152
14153 /**
14154  * gtk_tree_view_set_search_position_func:
14155  * @tree_view: A #GtkTreeView
14156  * @func: (allow-none): the function to use to position the search dialog, or %NULL
14157  *    to use the default search position function
14158  * @data: (allow-none): user data to pass to @func, or %NULL
14159  * @destroy: (allow-none): Destroy notifier for @data, or %NULL
14160  *
14161  * Sets the function to use when positioning the search dialog.
14162  *
14163  * Since: 2.10
14164  **/
14165 void
14166 gtk_tree_view_set_search_position_func (GtkTreeView                   *tree_view,
14167                                         GtkTreeViewSearchPositionFunc  func,
14168                                         gpointer                       user_data,
14169                                         GDestroyNotify                 destroy)
14170 {
14171   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
14172
14173   if (tree_view->priv->search_position_destroy)
14174     tree_view->priv->search_position_destroy (tree_view->priv->search_position_user_data);
14175
14176   tree_view->priv->search_position_func = func;
14177   tree_view->priv->search_position_user_data = user_data;
14178   tree_view->priv->search_position_destroy = destroy;
14179   if (tree_view->priv->search_position_func == NULL)
14180     tree_view->priv->search_position_func = gtk_tree_view_search_position_func;
14181 }
14182
14183 /**
14184  * gtk_tree_view_get_search_position_func:
14185  * @tree_view: A #GtkTreeView
14186  *
14187  * Returns the positioning function currently in use.
14188  *
14189  * Return value: the currently used function for positioning the search dialog.
14190  *
14191  * Since: 2.10
14192  */
14193 GtkTreeViewSearchPositionFunc
14194 gtk_tree_view_get_search_position_func (GtkTreeView *tree_view)
14195 {
14196   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), NULL);
14197
14198   return tree_view->priv->search_position_func;
14199 }
14200
14201
14202 static void
14203 gtk_tree_view_search_dialog_hide (GtkWidget   *search_dialog,
14204                                   GtkTreeView *tree_view)
14205 {
14206   if (tree_view->priv->disable_popdown)
14207     return;
14208
14209   if (tree_view->priv->search_entry_changed_id)
14210     {
14211       g_signal_handler_disconnect (tree_view->priv->search_entry,
14212                                    tree_view->priv->search_entry_changed_id);
14213       tree_view->priv->search_entry_changed_id = 0;
14214     }
14215   if (tree_view->priv->typeselect_flush_timeout)
14216     {
14217       g_source_remove (tree_view->priv->typeselect_flush_timeout);
14218       tree_view->priv->typeselect_flush_timeout = 0;
14219     }
14220
14221   if (gtk_widget_get_visible (search_dialog))
14222     {
14223       /* send focus-in event */
14224       send_focus_change (GTK_WIDGET (tree_view->priv->search_entry), FALSE);
14225       gtk_widget_hide (search_dialog);
14226       gtk_entry_set_text (GTK_ENTRY (tree_view->priv->search_entry), "");
14227       send_focus_change (GTK_WIDGET (tree_view), TRUE);
14228     }
14229 }
14230
14231 static void
14232 gtk_tree_view_search_position_func (GtkTreeView *tree_view,
14233                                     GtkWidget   *search_dialog,
14234                                     gpointer     user_data)
14235 {
14236   gint x, y;
14237   gint tree_x, tree_y;
14238   gint tree_width, tree_height;
14239   GdkWindow *tree_window = GTK_WIDGET (tree_view)->window;
14240   GdkScreen *screen = gdk_drawable_get_screen (tree_window);
14241   GtkRequisition requisition;
14242   gint monitor_num;
14243   GdkRectangle monitor;
14244
14245   monitor_num = gdk_screen_get_monitor_at_window (screen, tree_window);
14246   gdk_screen_get_monitor_geometry (screen, monitor_num, &monitor);
14247
14248   gtk_widget_realize (search_dialog);
14249
14250   gdk_window_get_origin (tree_window, &tree_x, &tree_y);
14251   gdk_drawable_get_size (tree_window,
14252                          &tree_width,
14253                          &tree_height);
14254   gtk_widget_size_request (search_dialog, &requisition);
14255
14256   if (tree_x + tree_width > gdk_screen_get_width (screen))
14257     x = gdk_screen_get_width (screen) - requisition.width;
14258   else if (tree_x + tree_width - requisition.width < 0)
14259     x = 0;
14260   else
14261     x = tree_x + tree_width - requisition.width;
14262
14263   if (tree_y + tree_height + requisition.height > gdk_screen_get_height (screen))
14264     y = gdk_screen_get_height (screen) - requisition.height;
14265   else if (tree_y + tree_height < 0) /* isn't really possible ... */
14266     y = 0;
14267   else
14268     y = tree_y + tree_height;
14269
14270   gtk_window_move (GTK_WINDOW (search_dialog), x, y);
14271 }
14272
14273 static void
14274 gtk_tree_view_search_disable_popdown (GtkEntry *entry,
14275                                       GtkMenu  *menu,
14276                                       gpointer  data)
14277 {
14278   GtkTreeView *tree_view = (GtkTreeView *)data;
14279
14280   tree_view->priv->disable_popdown = 1;
14281   g_signal_connect (menu, "hide",
14282                     G_CALLBACK (gtk_tree_view_search_enable_popdown), data);
14283 }
14284
14285 /* Because we're visible but offscreen, we just set a flag in the preedit
14286  * callback.
14287  */
14288 static void
14289 gtk_tree_view_search_preedit_changed (GtkIMContext *im_context,
14290                                       GtkTreeView  *tree_view)
14291 {
14292   tree_view->priv->imcontext_changed = 1;
14293   if (tree_view->priv->typeselect_flush_timeout)
14294     {
14295       g_source_remove (tree_view->priv->typeselect_flush_timeout);
14296       tree_view->priv->typeselect_flush_timeout =
14297         gdk_threads_add_timeout (GTK_TREE_VIEW_SEARCH_DIALOG_TIMEOUT,
14298                        (GSourceFunc) gtk_tree_view_search_entry_flush_timeout,
14299                        tree_view);
14300     }
14301
14302 }
14303
14304 static void
14305 gtk_tree_view_search_activate (GtkEntry    *entry,
14306                                GtkTreeView *tree_view)
14307 {
14308   GtkTreePath *path;
14309   GtkRBNode *node;
14310   GtkRBTree *tree;
14311
14312   gtk_tree_view_search_dialog_hide (tree_view->priv->search_window,
14313                                     tree_view);
14314
14315   /* If we have a row selected and it's the cursor row, we activate
14316    * the row XXX */
14317   if (gtk_tree_row_reference_valid (tree_view->priv->cursor))
14318     {
14319       path = gtk_tree_row_reference_get_path (tree_view->priv->cursor);
14320
14321       _gtk_tree_view_find_node (tree_view, path, &tree, &node);
14322
14323       if (node && GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_SELECTED))
14324         gtk_tree_view_row_activated (tree_view, path, tree_view->priv->focus_column);
14325
14326       gtk_tree_path_free (path);
14327     }
14328 }
14329
14330 static gboolean
14331 gtk_tree_view_real_search_enable_popdown (gpointer data)
14332 {
14333   GtkTreeView *tree_view = (GtkTreeView *)data;
14334
14335   tree_view->priv->disable_popdown = 0;
14336
14337   return FALSE;
14338 }
14339
14340 static void
14341 gtk_tree_view_search_enable_popdown (GtkWidget *widget,
14342                                      gpointer   data)
14343 {
14344   gdk_threads_add_timeout_full (G_PRIORITY_HIGH, 200, gtk_tree_view_real_search_enable_popdown, g_object_ref (data), g_object_unref);
14345 }
14346
14347 static gboolean
14348 gtk_tree_view_search_delete_event (GtkWidget *widget,
14349                                    GdkEventAny *event,
14350                                    GtkTreeView *tree_view)
14351 {
14352   g_return_val_if_fail (GTK_IS_WIDGET (widget), FALSE);
14353
14354   gtk_tree_view_search_dialog_hide (widget, tree_view);
14355
14356   return TRUE;
14357 }
14358
14359 static gboolean
14360 gtk_tree_view_search_button_press_event (GtkWidget *widget,
14361                                          GdkEventButton *event,
14362                                          GtkTreeView *tree_view)
14363 {
14364   g_return_val_if_fail (GTK_IS_WIDGET (widget), FALSE);
14365
14366   gtk_tree_view_search_dialog_hide (widget, tree_view);
14367
14368   if (event->window == tree_view->priv->bin_window)
14369     gtk_tree_view_button_press (GTK_WIDGET (tree_view), event);
14370
14371   return TRUE;
14372 }
14373
14374 static gboolean
14375 gtk_tree_view_search_scroll_event (GtkWidget *widget,
14376                                    GdkEventScroll *event,
14377                                    GtkTreeView *tree_view)
14378 {
14379   gboolean retval = FALSE;
14380
14381   if (event->direction == GDK_SCROLL_UP)
14382     {
14383       gtk_tree_view_search_move (widget, tree_view, TRUE);
14384       retval = TRUE;
14385     }
14386   else if (event->direction == GDK_SCROLL_DOWN)
14387     {
14388       gtk_tree_view_search_move (widget, tree_view, FALSE);
14389       retval = TRUE;
14390     }
14391
14392   /* renew the flush timeout */
14393   if (retval && tree_view->priv->typeselect_flush_timeout
14394       && !tree_view->priv->search_custom_entry_set)
14395     {
14396       g_source_remove (tree_view->priv->typeselect_flush_timeout);
14397       tree_view->priv->typeselect_flush_timeout =
14398         gdk_threads_add_timeout (GTK_TREE_VIEW_SEARCH_DIALOG_TIMEOUT,
14399                        (GSourceFunc) gtk_tree_view_search_entry_flush_timeout,
14400                        tree_view);
14401     }
14402
14403   return retval;
14404 }
14405
14406 static gboolean
14407 gtk_tree_view_search_key_press_event (GtkWidget *widget,
14408                                       GdkEventKey *event,
14409                                       GtkTreeView *tree_view)
14410 {
14411   gboolean retval = FALSE;
14412
14413   g_return_val_if_fail (GTK_IS_WIDGET (widget), FALSE);
14414   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), FALSE);
14415
14416   /* close window and cancel the search */
14417   if (!tree_view->priv->search_custom_entry_set
14418       && (event->keyval == GDK_Escape ||
14419           event->keyval == GDK_Tab ||
14420             event->keyval == GDK_KP_Tab ||
14421             event->keyval == GDK_ISO_Left_Tab))
14422     {
14423       gtk_tree_view_search_dialog_hide (widget, tree_view);
14424       return TRUE;
14425     }
14426
14427   /* select previous matching iter */
14428   if (event->keyval == GDK_Up || event->keyval == GDK_KP_Up)
14429     {
14430       if (!gtk_tree_view_search_move (widget, tree_view, TRUE))
14431         gtk_widget_error_bell (widget);
14432
14433       retval = TRUE;
14434     }
14435
14436   if (((event->state & (GTK_DEFAULT_ACCEL_MOD_MASK | GDK_SHIFT_MASK)) == (GTK_DEFAULT_ACCEL_MOD_MASK | GDK_SHIFT_MASK))
14437       && (event->keyval == GDK_g || event->keyval == GDK_G))
14438     {
14439       if (!gtk_tree_view_search_move (widget, tree_view, TRUE))
14440         gtk_widget_error_bell (widget);
14441
14442       retval = TRUE;
14443     }
14444
14445   /* select next matching iter */
14446   if (event->keyval == GDK_Down || event->keyval == GDK_KP_Down)
14447     {
14448       if (!gtk_tree_view_search_move (widget, tree_view, FALSE))
14449         gtk_widget_error_bell (widget);
14450
14451       retval = TRUE;
14452     }
14453
14454   if (((event->state & (GTK_DEFAULT_ACCEL_MOD_MASK | GDK_SHIFT_MASK)) == GTK_DEFAULT_ACCEL_MOD_MASK)
14455       && (event->keyval == GDK_g || event->keyval == GDK_G))
14456     {
14457       if (!gtk_tree_view_search_move (widget, tree_view, FALSE))
14458         gtk_widget_error_bell (widget);
14459
14460       retval = TRUE;
14461     }
14462
14463   /* renew the flush timeout */
14464   if (retval && tree_view->priv->typeselect_flush_timeout
14465       && !tree_view->priv->search_custom_entry_set)
14466     {
14467       g_source_remove (tree_view->priv->typeselect_flush_timeout);
14468       tree_view->priv->typeselect_flush_timeout =
14469         gdk_threads_add_timeout (GTK_TREE_VIEW_SEARCH_DIALOG_TIMEOUT,
14470                        (GSourceFunc) gtk_tree_view_search_entry_flush_timeout,
14471                        tree_view);
14472     }
14473
14474   return retval;
14475 }
14476
14477 /*  this function returns FALSE if there is a search string but
14478  *  nothing was found, and TRUE otherwise.
14479  */
14480 static gboolean
14481 gtk_tree_view_search_move (GtkWidget   *window,
14482                            GtkTreeView *tree_view,
14483                            gboolean     up)
14484 {
14485   gboolean ret;
14486   gint len;
14487   gint count = 0;
14488   const gchar *text;
14489   GtkTreeIter iter;
14490   GtkTreeModel *model;
14491   GtkTreeSelection *selection;
14492
14493   text = gtk_entry_get_text (GTK_ENTRY (tree_view->priv->search_entry));
14494
14495   g_return_val_if_fail (text != NULL, FALSE);
14496
14497   len = strlen (text);
14498
14499   if (up && tree_view->priv->selected_iter == 1)
14500     return strlen (text) < 1;
14501
14502   len = strlen (text);
14503
14504   if (len < 1)
14505     return TRUE;
14506
14507   model = gtk_tree_view_get_model (tree_view);
14508   selection = gtk_tree_view_get_selection (tree_view);
14509
14510   /* search */
14511   gtk_tree_selection_unselect_all (selection);
14512   if (!gtk_tree_model_get_iter_first (model, &iter))
14513     return TRUE;
14514
14515   ret = gtk_tree_view_search_iter (model, selection, &iter, text,
14516                                    &count, up?((tree_view->priv->selected_iter) - 1):((tree_view->priv->selected_iter + 1)));
14517
14518   if (ret)
14519     {
14520       /* found */
14521       tree_view->priv->selected_iter += up?(-1):(1);
14522       return TRUE;
14523     }
14524   else
14525     {
14526       /* return to old iter */
14527       count = 0;
14528       gtk_tree_model_get_iter_first (model, &iter);
14529       gtk_tree_view_search_iter (model, selection,
14530                                  &iter, text,
14531                                  &count, tree_view->priv->selected_iter);
14532       return FALSE;
14533     }
14534 }
14535
14536 static gboolean
14537 gtk_tree_view_search_equal_func (GtkTreeModel *model,
14538                                  gint          column,
14539                                  const gchar  *key,
14540                                  GtkTreeIter  *iter,
14541                                  gpointer      search_data)
14542 {
14543   gboolean retval = TRUE;
14544   const gchar *str;
14545   gchar *normalized_string;
14546   gchar *normalized_key;
14547   gchar *case_normalized_string = NULL;
14548   gchar *case_normalized_key = NULL;
14549   GValue value = {0,};
14550   GValue transformed = {0,};
14551
14552   gtk_tree_model_get_value (model, iter, column, &value);
14553
14554   g_value_init (&transformed, G_TYPE_STRING);
14555
14556   if (!g_value_transform (&value, &transformed))
14557     {
14558       g_value_unset (&value);
14559       return TRUE;
14560     }
14561
14562   g_value_unset (&value);
14563
14564   str = g_value_get_string (&transformed);
14565   if (!str)
14566     {
14567       g_value_unset (&transformed);
14568       return TRUE;
14569     }
14570
14571   normalized_string = g_utf8_normalize (str, -1, G_NORMALIZE_ALL);
14572   normalized_key = g_utf8_normalize (key, -1, G_NORMALIZE_ALL);
14573
14574   if (normalized_string && normalized_key)
14575     {
14576       case_normalized_string = g_utf8_casefold (normalized_string, -1);
14577       case_normalized_key = g_utf8_casefold (normalized_key, -1);
14578
14579       if (strncmp (case_normalized_key, case_normalized_string, strlen (case_normalized_key)) == 0)
14580         retval = FALSE;
14581     }
14582
14583   g_value_unset (&transformed);
14584   g_free (normalized_key);
14585   g_free (normalized_string);
14586   g_free (case_normalized_key);
14587   g_free (case_normalized_string);
14588
14589   return retval;
14590 }
14591
14592 static gboolean
14593 gtk_tree_view_search_iter (GtkTreeModel     *model,
14594                            GtkTreeSelection *selection,
14595                            GtkTreeIter      *iter,
14596                            const gchar      *text,
14597                            gint             *count,
14598                            gint              n)
14599 {
14600   GtkRBTree *tree = NULL;
14601   GtkRBNode *node = NULL;
14602   GtkTreePath *path;
14603
14604   GtkTreeView *tree_view = gtk_tree_selection_get_tree_view (selection);
14605
14606   path = gtk_tree_model_get_path (model, iter);
14607   _gtk_tree_view_find_node (tree_view, path, &tree, &node);
14608
14609   do
14610     {
14611       if (! tree_view->priv->search_equal_func (model, tree_view->priv->search_column, text, iter, tree_view->priv->search_user_data))
14612         {
14613           (*count)++;
14614           if (*count == n)
14615             {
14616               gtk_tree_view_scroll_to_cell (tree_view, path, NULL,
14617                                             TRUE, 0.5, 0.0);
14618               gtk_tree_selection_select_iter (selection, iter);
14619               gtk_tree_view_real_set_cursor (tree_view, path, FALSE, TRUE);
14620
14621               if (path)
14622                 gtk_tree_path_free (path);
14623
14624               return TRUE;
14625             }
14626         }
14627
14628       if (node->children)
14629         {
14630           gboolean has_child;
14631           GtkTreeIter tmp;
14632
14633           tree = node->children;
14634           node = tree->root;
14635
14636           while (node->left != tree->nil)
14637             node = node->left;
14638
14639           tmp = *iter;
14640           has_child = gtk_tree_model_iter_children (model, iter, &tmp);
14641           gtk_tree_path_down (path);
14642
14643           /* sanity check */
14644           TREE_VIEW_INTERNAL_ASSERT (has_child, FALSE);
14645         }
14646       else
14647         {
14648           gboolean done = FALSE;
14649
14650           do
14651             {
14652               node = _gtk_rbtree_next (tree, node);
14653
14654               if (node)
14655                 {
14656                   gboolean has_next;
14657
14658                   has_next = gtk_tree_model_iter_next (model, iter);
14659
14660                   done = TRUE;
14661                   gtk_tree_path_next (path);
14662
14663                   /* sanity check */
14664                   TREE_VIEW_INTERNAL_ASSERT (has_next, FALSE);
14665                 }
14666               else
14667                 {
14668                   gboolean has_parent;
14669                   GtkTreeIter tmp_iter = *iter;
14670
14671                   node = tree->parent_node;
14672                   tree = tree->parent_tree;
14673
14674                   if (!tree)
14675                     {
14676                       if (path)
14677                         gtk_tree_path_free (path);
14678
14679                       /* we've run out of tree, done with this func */
14680                       return FALSE;
14681                     }
14682
14683                   has_parent = gtk_tree_model_iter_parent (model,
14684                                                            iter,
14685                                                            &tmp_iter);
14686                   gtk_tree_path_up (path);
14687
14688                   /* sanity check */
14689                   TREE_VIEW_INTERNAL_ASSERT (has_parent, FALSE);
14690                 }
14691             }
14692           while (!done);
14693         }
14694     }
14695   while (1);
14696
14697   return FALSE;
14698 }
14699
14700 static void
14701 gtk_tree_view_search_init (GtkWidget   *entry,
14702                            GtkTreeView *tree_view)
14703 {
14704   gint ret;
14705   gint count = 0;
14706   const gchar *text;
14707   GtkTreeIter iter;
14708   GtkTreeModel *model;
14709   GtkTreeSelection *selection;
14710
14711   g_return_if_fail (GTK_IS_ENTRY (entry));
14712   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
14713
14714   text = gtk_entry_get_text (GTK_ENTRY (entry));
14715
14716   model = gtk_tree_view_get_model (tree_view);
14717   selection = gtk_tree_view_get_selection (tree_view);
14718
14719   /* search */
14720   gtk_tree_selection_unselect_all (selection);
14721   if (tree_view->priv->typeselect_flush_timeout
14722       && !tree_view->priv->search_custom_entry_set)
14723     {
14724       g_source_remove (tree_view->priv->typeselect_flush_timeout);
14725       tree_view->priv->typeselect_flush_timeout =
14726         gdk_threads_add_timeout (GTK_TREE_VIEW_SEARCH_DIALOG_TIMEOUT,
14727                        (GSourceFunc) gtk_tree_view_search_entry_flush_timeout,
14728                        tree_view);
14729     }
14730
14731   if (*text == '\0')
14732     return;
14733
14734   if (!gtk_tree_model_get_iter_first (model, &iter))
14735     return;
14736
14737   ret = gtk_tree_view_search_iter (model, selection,
14738                                    &iter, text,
14739                                    &count, 1);
14740
14741   if (ret)
14742     tree_view->priv->selected_iter = 1;
14743 }
14744
14745 static void
14746 gtk_tree_view_remove_widget (GtkCellEditable *cell_editable,
14747                              GtkTreeView     *tree_view)
14748 {
14749   if (tree_view->priv->edited_column == NULL)
14750     return;
14751
14752   _gtk_tree_view_column_stop_editing (tree_view->priv->edited_column);
14753   tree_view->priv->edited_column = NULL;
14754
14755   if (gtk_widget_has_focus (GTK_WIDGET (cell_editable)))
14756     gtk_widget_grab_focus (GTK_WIDGET (tree_view));
14757
14758   g_signal_handlers_disconnect_by_func (cell_editable,
14759                                         gtk_tree_view_remove_widget,
14760                                         tree_view);
14761
14762   gtk_container_remove (GTK_CONTAINER (tree_view),
14763                         GTK_WIDGET (cell_editable));
14764
14765   /* FIXME should only redraw a single node */
14766   gtk_widget_queue_draw (GTK_WIDGET (tree_view));
14767 }
14768
14769 static gboolean
14770 gtk_tree_view_start_editing (GtkTreeView *tree_view,
14771                              GtkTreePath *cursor_path)
14772 {
14773   GtkTreeIter iter;
14774   GdkRectangle background_area;
14775   GdkRectangle cell_area;
14776   GtkCellEditable *editable_widget = NULL;
14777   gchar *path_string;
14778   guint flags = 0; /* can be 0, as the flags are primarily for rendering */
14779   gint retval = FALSE;
14780   GtkRBTree *cursor_tree;
14781   GtkRBNode *cursor_node;
14782
14783   g_assert (tree_view->priv->focus_column);
14784
14785   if (!gtk_widget_get_realized (GTK_WIDGET (tree_view)))
14786     return FALSE;
14787
14788   if (_gtk_tree_view_find_node (tree_view, cursor_path, &cursor_tree, &cursor_node) ||
14789       cursor_node == NULL)
14790     return FALSE;
14791
14792   path_string = gtk_tree_path_to_string (cursor_path);
14793   gtk_tree_model_get_iter (tree_view->priv->model, &iter, cursor_path);
14794
14795   validate_row (tree_view, cursor_tree, cursor_node, &iter, cursor_path);
14796
14797   gtk_tree_view_column_cell_set_cell_data (tree_view->priv->focus_column,
14798                                            tree_view->priv->model,
14799                                            &iter,
14800                                            GTK_RBNODE_FLAG_SET (cursor_node, GTK_RBNODE_IS_PARENT),
14801                                            cursor_node->children?TRUE:FALSE);
14802   gtk_tree_view_get_background_area (tree_view,
14803                                      cursor_path,
14804                                      tree_view->priv->focus_column,
14805                                      &background_area);
14806   gtk_tree_view_get_cell_area (tree_view,
14807                                cursor_path,
14808                                tree_view->priv->focus_column,
14809                                &cell_area);
14810
14811   if (_gtk_tree_view_column_cell_event (tree_view->priv->focus_column,
14812                                         &editable_widget,
14813                                         NULL,
14814                                         path_string,
14815                                         &background_area,
14816                                         &cell_area,
14817                                         flags))
14818     {
14819       retval = TRUE;
14820       if (editable_widget != NULL)
14821         {
14822           gint left, right;
14823           GdkRectangle area;
14824           GtkCellRenderer *cell;
14825
14826           area = cell_area;
14827           cell = _gtk_tree_view_column_get_edited_cell (tree_view->priv->focus_column);
14828
14829           _gtk_tree_view_column_get_neighbor_sizes (tree_view->priv->focus_column, cell, &left, &right);
14830
14831           area.x += left;
14832           area.width -= right + left;
14833
14834           gtk_tree_view_real_start_editing (tree_view,
14835                                             tree_view->priv->focus_column,
14836                                             cursor_path,
14837                                             editable_widget,
14838                                             &area,
14839                                             NULL,
14840                                             flags);
14841         }
14842
14843     }
14844   g_free (path_string);
14845   return retval;
14846 }
14847
14848 static void
14849 gtk_tree_view_real_start_editing (GtkTreeView       *tree_view,
14850                                   GtkTreeViewColumn *column,
14851                                   GtkTreePath       *path,
14852                                   GtkCellEditable   *cell_editable,
14853                                   GdkRectangle      *cell_area,
14854                                   GdkEvent          *event,
14855                                   guint              flags)
14856 {
14857   gint pre_val = tree_view->priv->vadjustment->value;
14858   GtkRequisition requisition;
14859
14860   tree_view->priv->edited_column = column;
14861   _gtk_tree_view_column_start_editing (column, GTK_CELL_EDITABLE (cell_editable));
14862
14863   gtk_tree_view_real_set_cursor (tree_view, path, FALSE, TRUE);
14864   cell_area->y += pre_val - (int)tree_view->priv->vadjustment->value;
14865
14866   gtk_widget_size_request (GTK_WIDGET (cell_editable), &requisition);
14867
14868   GTK_TREE_VIEW_SET_FLAG (tree_view, GTK_TREE_VIEW_DRAW_KEYFOCUS);
14869
14870   if (requisition.height < cell_area->height)
14871     {
14872       gint diff = cell_area->height - requisition.height;
14873       gtk_tree_view_put (tree_view,
14874                          GTK_WIDGET (cell_editable),
14875                          cell_area->x, cell_area->y + diff/2,
14876                          cell_area->width, requisition.height);
14877     }
14878   else
14879     {
14880       gtk_tree_view_put (tree_view,
14881                          GTK_WIDGET (cell_editable),
14882                          cell_area->x, cell_area->y,
14883                          cell_area->width, cell_area->height);
14884     }
14885
14886   gtk_cell_editable_start_editing (GTK_CELL_EDITABLE (cell_editable),
14887                                    (GdkEvent *)event);
14888
14889   gtk_widget_grab_focus (GTK_WIDGET (cell_editable));
14890   g_signal_connect (cell_editable, "remove-widget",
14891                     G_CALLBACK (gtk_tree_view_remove_widget), tree_view);
14892 }
14893
14894 static void
14895 gtk_tree_view_stop_editing (GtkTreeView *tree_view,
14896                             gboolean     cancel_editing)
14897 {
14898   GtkTreeViewColumn *column;
14899   GtkCellRenderer *cell;
14900
14901   if (tree_view->priv->edited_column == NULL)
14902     return;
14903
14904   /*
14905    * This is very evil. We need to do this, because
14906    * gtk_cell_editable_editing_done may trigger gtk_tree_view_row_changed
14907    * later on. If gtk_tree_view_row_changed notices
14908    * tree_view->priv->edited_column != NULL, it'll call
14909    * gtk_tree_view_stop_editing again. Bad things will happen then.
14910    *
14911    * Please read that again if you intend to modify anything here.
14912    */
14913
14914   column = tree_view->priv->edited_column;
14915   tree_view->priv->edited_column = NULL;
14916
14917   cell = _gtk_tree_view_column_get_edited_cell (column);
14918   gtk_cell_renderer_stop_editing (cell, cancel_editing);
14919
14920   if (!cancel_editing)
14921     gtk_cell_editable_editing_done (column->editable_widget);
14922
14923   tree_view->priv->edited_column = column;
14924
14925   gtk_cell_editable_remove_widget (column->editable_widget);
14926 }
14927
14928
14929 /**
14930  * gtk_tree_view_set_hover_selection:
14931  * @tree_view: a #GtkTreeView
14932  * @hover: %TRUE to enable hover selection mode
14933  *
14934  * Enables of disables the hover selection mode of @tree_view.
14935  * Hover selection makes the selected row follow the pointer.
14936  * Currently, this works only for the selection modes
14937  * %GTK_SELECTION_SINGLE and %GTK_SELECTION_BROWSE.
14938  *
14939  * Since: 2.6
14940  **/
14941 void
14942 gtk_tree_view_set_hover_selection (GtkTreeView *tree_view,
14943                                    gboolean     hover)
14944 {
14945   hover = hover != FALSE;
14946
14947   if (hover != tree_view->priv->hover_selection)
14948     {
14949       tree_view->priv->hover_selection = hover;
14950
14951       g_object_notify (G_OBJECT (tree_view), "hover-selection");
14952     }
14953 }
14954
14955 /**
14956  * gtk_tree_view_get_hover_selection:
14957  * @tree_view: a #GtkTreeView
14958  *
14959  * Returns whether hover selection mode is turned on for @tree_view.
14960  *
14961  * Return value: %TRUE if @tree_view is in hover selection mode
14962  *
14963  * Since: 2.6
14964  **/
14965 gboolean
14966 gtk_tree_view_get_hover_selection (GtkTreeView *tree_view)
14967 {
14968   return tree_view->priv->hover_selection;
14969 }
14970
14971 /**
14972  * gtk_tree_view_set_hover_expand:
14973  * @tree_view: a #GtkTreeView
14974  * @expand: %TRUE to enable hover selection mode
14975  *
14976  * Enables of disables the hover expansion mode of @tree_view.
14977  * Hover expansion makes rows expand or collapse if the pointer
14978  * moves over them.
14979  *
14980  * Since: 2.6
14981  **/
14982 void
14983 gtk_tree_view_set_hover_expand (GtkTreeView *tree_view,
14984                                 gboolean     expand)
14985 {
14986   expand = expand != FALSE;
14987
14988   if (expand != tree_view->priv->hover_expand)
14989     {
14990       tree_view->priv->hover_expand = expand;
14991
14992       g_object_notify (G_OBJECT (tree_view), "hover-expand");
14993     }
14994 }
14995
14996 /**
14997  * gtk_tree_view_get_hover_expand:
14998  * @tree_view: a #GtkTreeView
14999  *
15000  * Returns whether hover expansion mode is turned on for @tree_view.
15001  *
15002  * Return value: %TRUE if @tree_view is in hover expansion mode
15003  *
15004  * Since: 2.6
15005  **/
15006 gboolean
15007 gtk_tree_view_get_hover_expand (GtkTreeView *tree_view)
15008 {
15009   return tree_view->priv->hover_expand;
15010 }
15011
15012 /**
15013  * gtk_tree_view_set_rubber_banding:
15014  * @tree_view: a #GtkTreeView
15015  * @enable: %TRUE to enable rubber banding
15016  *
15017  * Enables or disables rubber banding in @tree_view.  If the selection mode
15018  * is #GTK_SELECTION_MULTIPLE, rubber banding will allow the user to select
15019  * multiple rows by dragging the mouse.
15020  *
15021  * Since: 2.10
15022  **/
15023 void
15024 gtk_tree_view_set_rubber_banding (GtkTreeView *tree_view,
15025                                   gboolean     enable)
15026 {
15027   enable = enable != FALSE;
15028
15029   if (enable != tree_view->priv->rubber_banding_enable)
15030     {
15031       tree_view->priv->rubber_banding_enable = enable;
15032
15033       g_object_notify (G_OBJECT (tree_view), "rubber-banding");
15034     }
15035 }
15036
15037 /**
15038  * gtk_tree_view_get_rubber_banding:
15039  * @tree_view: a #GtkTreeView
15040  *
15041  * Returns whether rubber banding is turned on for @tree_view.  If the
15042  * selection mode is #GTK_SELECTION_MULTIPLE, rubber banding will allow the
15043  * user to select multiple rows by dragging the mouse.
15044  *
15045  * Return value: %TRUE if rubber banding in @tree_view is enabled.
15046  *
15047  * Since: 2.10
15048  **/
15049 gboolean
15050 gtk_tree_view_get_rubber_banding (GtkTreeView *tree_view)
15051 {
15052   return tree_view->priv->rubber_banding_enable;
15053 }
15054
15055 /**
15056  * gtk_tree_view_is_rubber_banding_active:
15057  * @tree_view: a #GtkTreeView
15058  *
15059  * Returns whether a rubber banding operation is currently being done
15060  * in @tree_view.
15061  *
15062  * Return value: %TRUE if a rubber banding operation is currently being
15063  * done in @tree_view.
15064  *
15065  * Since: 2.12
15066  **/
15067 gboolean
15068 gtk_tree_view_is_rubber_banding_active (GtkTreeView *tree_view)
15069 {
15070   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), FALSE);
15071
15072   if (tree_view->priv->rubber_banding_enable
15073       && tree_view->priv->rubber_band_status == RUBBER_BAND_ACTIVE)
15074     return TRUE;
15075
15076   return FALSE;
15077 }
15078
15079 /**
15080  * gtk_tree_view_get_row_separator_func:
15081  * @tree_view: a #GtkTreeView
15082  *
15083  * Returns the current row separator function.
15084  *
15085  * Return value: the current row separator function.
15086  *
15087  * Since: 2.6
15088  **/
15089 GtkTreeViewRowSeparatorFunc
15090 gtk_tree_view_get_row_separator_func (GtkTreeView *tree_view)
15091 {
15092   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), NULL);
15093
15094   return tree_view->priv->row_separator_func;
15095 }
15096
15097 /**
15098  * gtk_tree_view_set_row_separator_func:
15099  * @tree_view: a #GtkTreeView
15100  * @func: a #GtkTreeViewRowSeparatorFunc
15101  * @data: (allow-none): user data to pass to @func, or %NULL
15102  * @destroy: (allow-none): destroy notifier for @data, or %NULL
15103  *
15104  * Sets the row separator function, which is used to determine
15105  * whether a row should be drawn as a separator. If the row separator
15106  * function is %NULL, no separators are drawn. This is the default value.
15107  *
15108  * Since: 2.6
15109  **/
15110 void
15111 gtk_tree_view_set_row_separator_func (GtkTreeView                 *tree_view,
15112                                       GtkTreeViewRowSeparatorFunc  func,
15113                                       gpointer                     data,
15114                                       GDestroyNotify               destroy)
15115 {
15116   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
15117
15118   if (tree_view->priv->row_separator_destroy)
15119     tree_view->priv->row_separator_destroy (tree_view->priv->row_separator_data);
15120
15121   tree_view->priv->row_separator_func = func;
15122   tree_view->priv->row_separator_data = data;
15123   tree_view->priv->row_separator_destroy = destroy;
15124
15125   /* Have the tree recalculate heights */
15126   _gtk_rbtree_mark_invalid (tree_view->priv->tree);
15127   gtk_widget_queue_resize (GTK_WIDGET (tree_view));
15128 }
15129
15130
15131 static void
15132 gtk_tree_view_grab_notify (GtkWidget *widget,
15133                            gboolean   was_grabbed)
15134 {
15135   GtkTreeView *tree_view = GTK_TREE_VIEW (widget);
15136
15137   tree_view->priv->in_grab = !was_grabbed;
15138
15139   if (!was_grabbed)
15140     {
15141       tree_view->priv->pressed_button = -1;
15142
15143       if (tree_view->priv->rubber_band_status)
15144         gtk_tree_view_stop_rubber_band (tree_view);
15145     }
15146 }
15147
15148 static void
15149 gtk_tree_view_state_changed (GtkWidget      *widget,
15150                              GtkStateType    previous_state)
15151 {
15152   GtkTreeView *tree_view = GTK_TREE_VIEW (widget);
15153
15154   if (gtk_widget_get_realized (widget))
15155     {
15156       gdk_window_set_back_pixmap (widget->window, NULL, FALSE);
15157       gdk_window_set_background (tree_view->priv->bin_window, &widget->style->base[widget->state]);
15158     }
15159
15160   gtk_widget_queue_draw (widget);
15161 }
15162
15163 /**
15164  * gtk_tree_view_get_grid_lines:
15165  * @tree_view: a #GtkTreeView
15166  *
15167  * Returns which grid lines are enabled in @tree_view.
15168  *
15169  * Return value: a #GtkTreeViewGridLines value indicating which grid lines
15170  * are enabled.
15171  *
15172  * Since: 2.10
15173  */
15174 GtkTreeViewGridLines
15175 gtk_tree_view_get_grid_lines (GtkTreeView *tree_view)
15176 {
15177   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), 0);
15178
15179   return tree_view->priv->grid_lines;
15180 }
15181
15182 /**
15183  * gtk_tree_view_set_grid_lines:
15184  * @tree_view: a #GtkTreeView
15185  * @grid_lines: a #GtkTreeViewGridLines value indicating which grid lines to
15186  * enable.
15187  *
15188  * Sets which grid lines to draw in @tree_view.
15189  *
15190  * Since: 2.10
15191  */
15192 void
15193 gtk_tree_view_set_grid_lines (GtkTreeView           *tree_view,
15194                               GtkTreeViewGridLines   grid_lines)
15195 {
15196   GtkTreeViewPrivate *priv;
15197   GtkWidget *widget;
15198   GtkTreeViewGridLines old_grid_lines;
15199
15200   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
15201
15202   priv = tree_view->priv;
15203   widget = GTK_WIDGET (tree_view);
15204
15205   old_grid_lines = priv->grid_lines;
15206   priv->grid_lines = grid_lines;
15207
15208   if (gtk_widget_get_realized (widget))
15209     {
15210       if (grid_lines == GTK_TREE_VIEW_GRID_LINES_NONE &&
15211           priv->grid_line_gc)
15212         {
15213           g_object_unref (priv->grid_line_gc);
15214           priv->grid_line_gc = NULL;
15215         }
15216
15217       if (grid_lines != GTK_TREE_VIEW_GRID_LINES_NONE &&
15218           !priv->grid_line_gc)
15219         {
15220           gint line_width;
15221           gint8 *dash_list;
15222
15223           gtk_widget_style_get (widget,
15224                                 "grid-line-width", &line_width,
15225                                 "grid-line-pattern", (gchar *)&dash_list,
15226                                 NULL);
15227
15228           priv->grid_line_gc = gdk_gc_new (widget->window);
15229           gdk_gc_copy (priv->grid_line_gc, widget->style->black_gc);
15230
15231           gdk_gc_set_line_attributes (priv->grid_line_gc, line_width,
15232                                       GDK_LINE_ON_OFF_DASH,
15233                                       GDK_CAP_BUTT, GDK_JOIN_MITER);
15234           gdk_gc_set_dashes (priv->grid_line_gc, 0, dash_list, 2);
15235
15236           g_free (dash_list);
15237         }
15238     }
15239
15240   if (old_grid_lines != grid_lines)
15241     {
15242       gtk_widget_queue_draw (GTK_WIDGET (tree_view));
15243
15244       g_object_notify (G_OBJECT (tree_view), "enable-grid-lines");
15245     }
15246 }
15247
15248 /**
15249  * gtk_tree_view_get_enable_tree_lines:
15250  * @tree_view: a #GtkTreeView.
15251  *
15252  * Returns whether or not tree lines are drawn in @tree_view.
15253  *
15254  * Return value: %TRUE if tree lines are drawn in @tree_view, %FALSE
15255  * otherwise.
15256  *
15257  * Since: 2.10
15258  */
15259 gboolean
15260 gtk_tree_view_get_enable_tree_lines (GtkTreeView *tree_view)
15261 {
15262   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), FALSE);
15263
15264   return tree_view->priv->tree_lines_enabled;
15265 }
15266
15267 /**
15268  * gtk_tree_view_set_enable_tree_lines:
15269  * @tree_view: a #GtkTreeView
15270  * @enabled: %TRUE to enable tree line drawing, %FALSE otherwise.
15271  *
15272  * Sets whether to draw lines interconnecting the expanders in @tree_view.
15273  * This does not have any visible effects for lists.
15274  *
15275  * Since: 2.10
15276  */
15277 void
15278 gtk_tree_view_set_enable_tree_lines (GtkTreeView *tree_view,
15279                                      gboolean     enabled)
15280 {
15281   GtkTreeViewPrivate *priv;
15282   GtkWidget *widget;
15283   gboolean was_enabled;
15284
15285   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
15286
15287   enabled = enabled != FALSE;
15288
15289   priv = tree_view->priv;
15290   widget = GTK_WIDGET (tree_view);
15291
15292   was_enabled = priv->tree_lines_enabled;
15293
15294   priv->tree_lines_enabled = enabled;
15295
15296   if (gtk_widget_get_realized (widget))
15297     {
15298       if (!enabled && priv->tree_line_gc)
15299         {
15300           g_object_unref (priv->tree_line_gc);
15301           priv->tree_line_gc = NULL;
15302         }
15303
15304       if (enabled && !priv->tree_line_gc)
15305         {
15306           gint line_width;
15307           gint8 *dash_list;
15308           gtk_widget_style_get (widget,
15309                                 "tree-line-width", &line_width,
15310                                 "tree-line-pattern", (gchar *)&dash_list,
15311                                 NULL);
15312
15313           priv->tree_line_gc = gdk_gc_new (widget->window);
15314           gdk_gc_copy (priv->tree_line_gc, widget->style->black_gc);
15315
15316           gdk_gc_set_line_attributes (priv->tree_line_gc, line_width,
15317                                       GDK_LINE_ON_OFF_DASH,
15318                                       GDK_CAP_BUTT, GDK_JOIN_MITER);
15319           gdk_gc_set_dashes (priv->tree_line_gc, 0, dash_list, 2);
15320
15321           g_free (dash_list);
15322         }
15323     }
15324
15325   if (was_enabled != enabled)
15326     {
15327       gtk_widget_queue_draw (GTK_WIDGET (tree_view));
15328
15329       g_object_notify (G_OBJECT (tree_view), "enable-tree-lines");
15330     }
15331 }
15332
15333
15334 /**
15335  * gtk_tree_view_set_show_expanders:
15336  * @tree_view: a #GtkTreeView
15337  * @enabled: %TRUE to enable expander drawing, %FALSE otherwise.
15338  *
15339  * Sets whether to draw and enable expanders and indent child rows in
15340  * @tree_view.  When disabled there will be no expanders visible in trees
15341  * and there will be no way to expand and collapse rows by default.  Also
15342  * note that hiding the expanders will disable the default indentation.  You
15343  * can set a custom indentation in this case using
15344  * gtk_tree_view_set_level_indentation().
15345  * This does not have any visible effects for lists.
15346  *
15347  * Since: 2.12
15348  */
15349 void
15350 gtk_tree_view_set_show_expanders (GtkTreeView *tree_view,
15351                                   gboolean     enabled)
15352 {
15353   gboolean was_enabled;
15354
15355   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
15356
15357   enabled = enabled != FALSE;
15358   was_enabled = GTK_TREE_VIEW_FLAG_SET (tree_view, GTK_TREE_VIEW_SHOW_EXPANDERS);
15359
15360   if (enabled)
15361     GTK_TREE_VIEW_SET_FLAG (tree_view, GTK_TREE_VIEW_SHOW_EXPANDERS);
15362   else
15363     GTK_TREE_VIEW_UNSET_FLAG (tree_view, GTK_TREE_VIEW_SHOW_EXPANDERS);
15364
15365   if (enabled != was_enabled)
15366     gtk_widget_queue_draw (GTK_WIDGET (tree_view));
15367 }
15368
15369 /**
15370  * gtk_tree_view_get_show_expanders:
15371  * @tree_view: a #GtkTreeView.
15372  *
15373  * Returns whether or not expanders are drawn in @tree_view.
15374  *
15375  * Return value: %TRUE if expanders are drawn in @tree_view, %FALSE
15376  * otherwise.
15377  *
15378  * Since: 2.12
15379  */
15380 gboolean
15381 gtk_tree_view_get_show_expanders (GtkTreeView *tree_view)
15382 {
15383   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), FALSE);
15384
15385   return GTK_TREE_VIEW_FLAG_SET (tree_view, GTK_TREE_VIEW_SHOW_EXPANDERS);
15386 }
15387
15388 /**
15389  * gtk_tree_view_set_level_indentation:
15390  * @tree_view: a #GtkTreeView
15391  * @indentation: the amount, in pixels, of extra indentation in @tree_view.
15392  *
15393  * Sets the amount of extra indentation for child levels to use in @tree_view
15394  * in addition to the default indentation.  The value should be specified in
15395  * pixels, a value of 0 disables this feature and in this case only the default
15396  * indentation will be used.
15397  * This does not have any visible effects for lists.
15398  *
15399  * Since: 2.12
15400  */
15401 void
15402 gtk_tree_view_set_level_indentation (GtkTreeView *tree_view,
15403                                      gint         indentation)
15404 {
15405   tree_view->priv->level_indentation = indentation;
15406
15407   gtk_widget_queue_draw (GTK_WIDGET (tree_view));
15408 }
15409
15410 /**
15411  * gtk_tree_view_get_level_indentation:
15412  * @tree_view: a #GtkTreeView.
15413  *
15414  * Returns the amount, in pixels, of extra indentation for child levels
15415  * in @tree_view.
15416  *
15417  * Return value: the amount of extra indentation for child levels in
15418  * @tree_view.  A return value of 0 means that this feature is disabled.
15419  *
15420  * Since: 2.12
15421  */
15422 gint
15423 gtk_tree_view_get_level_indentation (GtkTreeView *tree_view)
15424 {
15425   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), 0);
15426
15427   return tree_view->priv->level_indentation;
15428 }
15429
15430 /**
15431  * gtk_tree_view_set_tooltip_row:
15432  * @tree_view: a #GtkTreeView
15433  * @tooltip: a #GtkTooltip
15434  * @path: a #GtkTreePath
15435  *
15436  * Sets the tip area of @tooltip to be the area covered by the row at @path.
15437  * See also gtk_tree_view_set_tooltip_column() for a simpler alternative.
15438  * See also gtk_tooltip_set_tip_area().
15439  *
15440  * Since: 2.12
15441  */
15442 void
15443 gtk_tree_view_set_tooltip_row (GtkTreeView *tree_view,
15444                                GtkTooltip  *tooltip,
15445                                GtkTreePath *path)
15446 {
15447   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
15448   g_return_if_fail (GTK_IS_TOOLTIP (tooltip));
15449
15450   gtk_tree_view_set_tooltip_cell (tree_view, tooltip, path, NULL, NULL);
15451 }
15452
15453 /**
15454  * gtk_tree_view_set_tooltip_cell:
15455  * @tree_view: a #GtkTreeView
15456  * @tooltip: a #GtkTooltip
15457  * @path: (allow-none): a #GtkTreePath or %NULL
15458  * @column: (allow-none): a #GtkTreeViewColumn or %NULL
15459  * @cell: (allow-none): a #GtkCellRenderer or %NULL
15460  *
15461  * Sets the tip area of @tooltip to the area @path, @column and @cell have
15462  * in common.  For example if @path is %NULL and @column is set, the tip
15463  * area will be set to the full area covered by @column.  See also
15464  * gtk_tooltip_set_tip_area().
15465  *
15466  * Note that if @path is not specified and @cell is set and part of a column
15467  * containing the expander, the tooltip might not show and hide at the correct
15468  * position.  In such cases @path must be set to the current node under the
15469  * mouse cursor for this function to operate correctly.
15470  *
15471  * See also gtk_tree_view_set_tooltip_column() for a simpler alternative.
15472  *
15473  * Since: 2.12
15474  */
15475 void
15476 gtk_tree_view_set_tooltip_cell (GtkTreeView       *tree_view,
15477                                 GtkTooltip        *tooltip,
15478                                 GtkTreePath       *path,
15479                                 GtkTreeViewColumn *column,
15480                                 GtkCellRenderer   *cell)
15481 {
15482   GdkRectangle rect;
15483
15484   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
15485   g_return_if_fail (GTK_IS_TOOLTIP (tooltip));
15486   g_return_if_fail (column == NULL || GTK_IS_TREE_VIEW_COLUMN (column));
15487   g_return_if_fail (cell == NULL || GTK_IS_CELL_RENDERER (cell));
15488
15489   /* Determine x values. */
15490   if (column && cell)
15491     {
15492       GdkRectangle tmp;
15493       gint start, width;
15494
15495       /* We always pass in path here, whether it is NULL or not.
15496        * For cells in expander columns path must be specified so that
15497        * we can correctly account for the indentation.  This also means
15498        * that the tooltip is constrained vertically by the "Determine y
15499        * values" code below; this is not a real problem since cells actually
15500        * don't stretch vertically in constrast to columns.
15501        */
15502       gtk_tree_view_get_cell_area (tree_view, path, column, &tmp);
15503       gtk_tree_view_column_cell_get_position (column, cell, &start, &width);
15504
15505       gtk_tree_view_convert_bin_window_to_widget_coords (tree_view,
15506                                                          tmp.x + start, 0,
15507                                                          &rect.x, NULL);
15508       rect.width = width;
15509     }
15510   else if (column)
15511     {
15512       GdkRectangle tmp;
15513
15514       gtk_tree_view_get_background_area (tree_view, NULL, column, &tmp);
15515       gtk_tree_view_convert_bin_window_to_widget_coords (tree_view,
15516                                                          tmp.x, 0,
15517                                                          &rect.x, NULL);
15518       rect.width = tmp.width;
15519     }
15520   else
15521     {
15522       rect.x = 0;
15523       rect.width = GTK_WIDGET (tree_view)->allocation.width;
15524     }
15525
15526   /* Determine y values. */
15527   if (path)
15528     {
15529       GdkRectangle tmp;
15530
15531       gtk_tree_view_get_background_area (tree_view, path, NULL, &tmp);
15532       gtk_tree_view_convert_bin_window_to_widget_coords (tree_view,
15533                                                          0, tmp.y,
15534                                                          NULL, &rect.y);
15535       rect.height = tmp.height;
15536     }
15537   else
15538     {
15539       rect.y = 0;
15540       rect.height = tree_view->priv->vadjustment->page_size;
15541     }
15542
15543   gtk_tooltip_set_tip_area (tooltip, &rect);
15544 }
15545
15546 /**
15547  * gtk_tree_view_get_tooltip_context:
15548  * @tree_view: a #GtkTreeView
15549  * @x: the x coordinate (relative to widget coordinates)
15550  * @y: the y coordinate (relative to widget coordinates)
15551  * @keyboard_tip: whether this is a keyboard tooltip or not
15552  * @model: (allow-none): a pointer to receive a #GtkTreeModel or %NULL
15553  * @path: (allow-none): a pointer to receive a #GtkTreePath or %NULL
15554  * @iter: (allow-none): a pointer to receive a #GtkTreeIter or %NULL
15555  *
15556  * This function is supposed to be used in a #GtkWidget::query-tooltip
15557  * signal handler for #GtkTreeView.  The @x, @y and @keyboard_tip values
15558  * which are received in the signal handler, should be passed to this
15559  * function without modification.
15560  *
15561  * The return value indicates whether there is a tree view row at the given
15562  * coordinates (%TRUE) or not (%FALSE) for mouse tooltips.  For keyboard
15563  * tooltips the row returned will be the cursor row.  When %TRUE, then any of
15564  * @model, @path and @iter which have been provided will be set to point to
15565  * that row and the corresponding model.  @x and @y will always be converted
15566  * to be relative to @tree_view's bin_window if @keyboard_tooltip is %FALSE.
15567  *
15568  * Return value: whether or not the given tooltip context points to a row.
15569  *
15570  * Since: 2.12
15571  */
15572 gboolean
15573 gtk_tree_view_get_tooltip_context (GtkTreeView   *tree_view,
15574                                    gint          *x,
15575                                    gint          *y,
15576                                    gboolean       keyboard_tip,
15577                                    GtkTreeModel **model,
15578                                    GtkTreePath  **path,
15579                                    GtkTreeIter   *iter)
15580 {
15581   GtkTreePath *tmppath = NULL;
15582
15583   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), FALSE);
15584   g_return_val_if_fail (x != NULL, FALSE);
15585   g_return_val_if_fail (y != NULL, FALSE);
15586
15587   if (keyboard_tip)
15588     {
15589       gtk_tree_view_get_cursor (tree_view, &tmppath, NULL);
15590
15591       if (!tmppath)
15592         return FALSE;
15593     }
15594   else
15595     {
15596       gtk_tree_view_convert_widget_to_bin_window_coords (tree_view, *x, *y,
15597                                                          x, y);
15598
15599       if (!gtk_tree_view_get_path_at_pos (tree_view, *x, *y,
15600                                           &tmppath, NULL, NULL, NULL))
15601         return FALSE;
15602     }
15603
15604   if (model)
15605     *model = gtk_tree_view_get_model (tree_view);
15606
15607   if (iter)
15608     gtk_tree_model_get_iter (gtk_tree_view_get_model (tree_view),
15609                              iter, tmppath);
15610
15611   if (path)
15612     *path = tmppath;
15613   else
15614     gtk_tree_path_free (tmppath);
15615
15616   return TRUE;
15617 }
15618
15619 static gboolean
15620 gtk_tree_view_set_tooltip_query_cb (GtkWidget  *widget,
15621                                     gint        x,
15622                                     gint        y,
15623                                     gboolean    keyboard_tip,
15624                                     GtkTooltip *tooltip,
15625                                     gpointer    data)
15626 {
15627   GValue value = { 0, };
15628   GValue transformed = { 0, };
15629   GtkTreeIter iter;
15630   GtkTreePath *path;
15631   GtkTreeModel *model;
15632   GtkTreeView *tree_view = GTK_TREE_VIEW (widget);
15633
15634   if (!gtk_tree_view_get_tooltip_context (GTK_TREE_VIEW (widget),
15635                                           &x, &y,
15636                                           keyboard_tip,
15637                                           &model, &path, &iter))
15638     return FALSE;
15639
15640   gtk_tree_model_get_value (model, &iter,
15641                             tree_view->priv->tooltip_column, &value);
15642
15643   g_value_init (&transformed, G_TYPE_STRING);
15644
15645   if (!g_value_transform (&value, &transformed))
15646     {
15647       g_value_unset (&value);
15648       gtk_tree_path_free (path);
15649
15650       return FALSE;
15651     }
15652
15653   g_value_unset (&value);
15654
15655   if (!g_value_get_string (&transformed))
15656     {
15657       g_value_unset (&transformed);
15658       gtk_tree_path_free (path);
15659
15660       return FALSE;
15661     }
15662
15663   gtk_tooltip_set_markup (tooltip, g_value_get_string (&transformed));
15664   gtk_tree_view_set_tooltip_row (tree_view, tooltip, path);
15665
15666   gtk_tree_path_free (path);
15667   g_value_unset (&transformed);
15668
15669   return TRUE;
15670 }
15671
15672 /**
15673  * gtk_tree_view_set_tooltip_column:
15674  * @tree_view: a #GtkTreeView
15675  * @column: an integer, which is a valid column number for @tree_view's model
15676  *
15677  * If you only plan to have simple (text-only) tooltips on full rows, you
15678  * can use this function to have #GtkTreeView handle these automatically
15679  * for you. @column should be set to the column in @tree_view's model
15680  * containing the tooltip texts, or -1 to disable this feature.
15681  *
15682  * When enabled, #GtkWidget::has-tooltip will be set to %TRUE and
15683  * @tree_view will connect a #GtkWidget::query-tooltip signal handler.
15684  *
15685  * Note that the signal handler sets the text with gtk_tooltip_set_markup(),
15686  * so &amp;, &lt;, etc have to be escaped in the text.
15687  *
15688  * Since: 2.12
15689  */
15690 void
15691 gtk_tree_view_set_tooltip_column (GtkTreeView *tree_view,
15692                                   gint         column)
15693 {
15694   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
15695
15696   if (column == tree_view->priv->tooltip_column)
15697     return;
15698
15699   if (column == -1)
15700     {
15701       g_signal_handlers_disconnect_by_func (tree_view,
15702                                             gtk_tree_view_set_tooltip_query_cb,
15703                                             NULL);
15704       gtk_widget_set_has_tooltip (GTK_WIDGET (tree_view), FALSE);
15705     }
15706   else
15707     {
15708       if (tree_view->priv->tooltip_column == -1)
15709         {
15710           g_signal_connect (tree_view, "query-tooltip",
15711                             G_CALLBACK (gtk_tree_view_set_tooltip_query_cb), NULL);
15712           gtk_widget_set_has_tooltip (GTK_WIDGET (tree_view), TRUE);
15713         }
15714     }
15715
15716   tree_view->priv->tooltip_column = column;
15717   g_object_notify (G_OBJECT (tree_view), "tooltip-column");
15718 }
15719
15720 /**
15721  * gtk_tree_view_get_tooltip_column:
15722  * @tree_view: a #GtkTreeView
15723  *
15724  * Returns the column of @tree_view's model which is being used for
15725  * displaying tooltips on @tree_view's rows.
15726  *
15727  * Return value: the index of the tooltip column that is currently being
15728  * used, or -1 if this is disabled.
15729  *
15730  * Since: 2.12
15731  */
15732 gint
15733 gtk_tree_view_get_tooltip_column (GtkTreeView *tree_view)
15734 {
15735   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), 0);
15736
15737   return tree_view->priv->tooltip_column;
15738 }
15739
15740 static void
15741 gtk_tree_view_extended_layout_get_desired_size (GtkExtendedLayout *layout,
15742                                                 GtkRequisition    *minimal_size,
15743                                                 GtkRequisition    *desired_size)
15744 {
15745   GtkTreeView *tree_view;
15746   gint natural_width = 0;
15747   GList *column_iter;
15748   GtkRequisition requisition;
15749
15750   tree_view = GTK_TREE_VIEW (layout);
15751
15752   gtk_widget_size_request (GTK_WIDGET (layout), &requisition);
15753
15754   for (column_iter = tree_view->priv->columns; column_iter; column_iter = column_iter->next)
15755     {
15756       GtkTreeViewColumn *column = column_iter->data;
15757
15758       if (!column->visible)
15759         continue;
15760
15761       natural_width += gtk_tree_view_get_real_natural_width_from_column (tree_view, column);
15762     }
15763
15764   if (minimal_size)
15765     *minimal_size = requisition;
15766
15767   if (desired_size)
15768     {
15769       desired_size->height = requisition.height;
15770       desired_size->width = natural_width;
15771     }
15772 }
15773
15774 static void
15775 gtk_tree_view_extended_layout_init (GtkExtendedLayoutIface *iface)
15776 {
15777   iface->get_desired_size = gtk_tree_view_extended_layout_get_desired_size;
15778 }
15779
15780
15781 #define __GTK_TREE_VIEW_C__
15782 #include "gtkaliasdef.c"