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

   1 /* gtktreeview.c
   2  * Copyright (C) 2000  Red Hat, Inc.,  Jonathan Blandford <jrb@redhat.com>
   3  *
   4  * This library is free software; you can redistribute it and/or
   5  * modify it under the terms of the GNU Library General Public
   6  * License as published by the Free Software Foundation; either
   7  * version 2 of the License, or (at your option) any later version.
   8  *
   9  * This library is distributed in the hope that it will be useful,
  10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  12  * Library General Public License for more details.
  13  *
  14  * You should have received a copy of the GNU Library General Public
  15  * License along with this library; if not, write to the
  16  * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
  17  * Boston, MA 02111-1307, USA.
  18  */
  19
  20
  21 #include "config.h"
  22 #include <math.h>
  23 #include <string.h>
  24 #include <gdk/gdkkeysyms.h>
  25
  26 #include "gtktreeview.h"
  27 #include "gtkrbtree.h"
  28 #include "gtktreednd.h"
  29 #include "gtktreeprivate.h"
  30 #include "gtkcellrenderer.h"
  31 #include "gtkmain.h"
  32 #include "gtkmarshalers.h"
  33 #include "gtkbuildable.h"
  34 #include "gtkbutton.h"
  35 #include "gtkalignment.h"
  36 #include "gtklabel.h"
  37 #include "gtkhbox.h"
  38 #include "gtkvbox.h"
  39 #include "gtkarrow.h"
  40 #include "gtkintl.h"
  41 #include "gtkbindings.h"
  42 #include "gtkcontainer.h"
  43 #include "gtkentry.h"
  44 #include "gtkframe.h"
  45 #include "gtktreemodelsort.h"
  46 #include "gtktooltip.h"
  47 #include "gtkscrollable.h"
  48 #include "gtkprivate.h"
  49 #include "gtkwidgetprivate.h"
  50
  51 #define GTK_TREE_VIEW_PRIORITY_VALIDATE (GDK_PRIORITY_REDRAW + 5)
  52 #define GTK_TREE_VIEW_PRIORITY_SCROLL_SYNC (GTK_TREE_VIEW_PRIORITY_VALIDATE + 2)
  53 #define GTK_TREE_VIEW_TIME_MS_PER_IDLE 30
  54 #define SCROLL_EDGE_SIZE 15
  55 #define EXPANDER_EXTRA_PADDING 4
  56 #define GTK_TREE_VIEW_SEARCH_DIALOG_TIMEOUT 5000
  57 #define AUTO_EXPAND_TIMEOUT 500
  58
  59 /* The "background" areas of all rows/cells add up to cover the entire tree.
  60  * The background includes all inter-row and inter-cell spacing.
  61  * The "cell" areas are the cell_area passed in to gtk_cell_renderer_render(),
  62  * i.e. just the cells, no spacing.
  63  */
  64
  65 #define BACKGROUND_HEIGHT(node) (GTK_RBNODE_GET_HEIGHT (node))
  66 #define CELL_HEIGHT(node, separator) ((BACKGROUND_HEIGHT (node)) - (separator))
  67
  68 /* Translate from bin_window coordinates to rbtree (tree coordinates) and
  69  * vice versa.
  70  */
  71 #define TREE_WINDOW_Y_TO_RBTREE_Y(tree_view,y) ((y) + tree_view->priv->dy)
  72 #define RBTREE_Y_TO_TREE_WINDOW_Y(tree_view,y) ((y) - tree_view->priv->dy)
  73
  74 /* This is in bin_window coordinates */
  75 #define BACKGROUND_FIRST_PIXEL(tree_view,tree,node) (RBTREE_Y_TO_TREE_WINDOW_Y (tree_view, _gtk_rbtree_node_find_offset ((tree), (node))))
  76 #define CELL_FIRST_PIXEL(tree_view,tree,node,separator) (BACKGROUND_FIRST_PIXEL (tree_view,tree,node) + separator/2)
  77
  78 #define ROW_HEIGHT(tree_view,height) \
  79   ((height > 0) ? (height) : (tree_view)->priv->expander_size)
  80
  81
  82 typedef struct _GtkTreeViewChild GtkTreeViewChild;
  83 struct _GtkTreeViewChild
  84 {
  85   GtkWidget *widget;
  86   gint x;
  87   gint y;
  88   gint width;
  89   gint height;
  90 };
  91
  92
  93 typedef struct _TreeViewDragInfo TreeViewDragInfo;
  94 struct _TreeViewDragInfo
  95 {
  96   GdkModifierType start_button_mask;
  97   GtkTargetList *_unused_source_target_list;
  98   GdkDragAction source_actions;
  99
 100   GtkTargetList *_unused_dest_target_list;
 101
 102   guint source_set : 1;
 103   guint dest_set : 1;
 104 };
 105
 106
 107 /* Signals */
 108 enum
 109 {
 110   ROW_ACTIVATED,
 111   TEST_EXPAND_ROW,
 112   TEST_COLLAPSE_ROW,
 113   ROW_EXPANDED,
 114   ROW_COLLAPSED,
 115   COLUMNS_CHANGED,
 116   CURSOR_CHANGED,
 117   MOVE_CURSOR,
 118   SELECT_ALL,
 119   UNSELECT_ALL,
 120   SELECT_CURSOR_ROW,
 121   TOGGLE_CURSOR_ROW,
 122   EXPAND_COLLAPSE_CURSOR_ROW,
 123   SELECT_CURSOR_PARENT,
 124   START_INTERACTIVE_SEARCH,
 125   LAST_SIGNAL
 126 };
 127
 128 /* Properties */
 129 enum {
 130   PROP_0,
 131   PROP_MODEL,
 132   PROP_HADJUSTMENT,
 133   PROP_VADJUSTMENT,
 134   PROP_HEADERS_VISIBLE,
 135   PROP_HEADERS_CLICKABLE,
 136   PROP_EXPANDER_COLUMN,
 137   PROP_REORDERABLE,
 138   PROP_RULES_HINT,
 139   PROP_ENABLE_SEARCH,
 140   PROP_SEARCH_COLUMN,
 141   PROP_FIXED_HEIGHT_MODE,
 142   PROP_HOVER_SELECTION,
 143   PROP_HOVER_EXPAND,
 144   PROP_SHOW_EXPANDERS,
 145   PROP_LEVEL_INDENTATION,
 146   PROP_RUBBER_BANDING,
 147   PROP_ENABLE_GRID_LINES,
 148   PROP_ENABLE_TREE_LINES,
 149   PROP_TOOLTIP_COLUMN
 150 };
 151
 152 /* object signals */
 153 static void     gtk_tree_view_finalize             (GObject          *object);
 154 static void     gtk_tree_view_set_property         (GObject         *object,
 155                                                     guint            prop_id,
 156                                                     const GValue    *value,
 157                                                     GParamSpec      *pspec);
 158 static void     gtk_tree_view_get_property         (GObject         *object,
 159                                                     guint            prop_id,
 160                                                     GValue          *value,
 161                                                     GParamSpec      *pspec);
 162
 163 /* gtkwidget signals */
 164 static void     gtk_tree_view_destroy              (GtkWidget        *widget);
 165 static void     gtk_tree_view_realize              (GtkWidget        *widget);
 166 static void     gtk_tree_view_unrealize            (GtkWidget        *widget);
 167 static void     gtk_tree_view_map                  (GtkWidget        *widget);
 168 static void     gtk_tree_view_size_request         (GtkWidget        *widget,
 169                                                     GtkRequisition   *requisition);
 170 static void     gtk_tree_view_size_allocate        (GtkWidget        *widget,
 171                                                     GtkAllocation    *allocation);
 172 static gboolean gtk_tree_view_draw                 (GtkWidget        *widget,
 173                                                     cairo_t          *cr);
 174 static gboolean gtk_tree_view_key_press            (GtkWidget        *widget,
 175                                                     GdkEventKey      *event);
 176 static gboolean gtk_tree_view_key_release          (GtkWidget        *widget,
 177                                                     GdkEventKey      *event);
 178 static gboolean gtk_tree_view_motion               (GtkWidget        *widget,
 179                                                     GdkEventMotion   *event);
 180 static gboolean gtk_tree_view_enter_notify         (GtkWidget        *widget,
 181                                                     GdkEventCrossing *event);
 182 static gboolean gtk_tree_view_leave_notify         (GtkWidget        *widget,
 183                                                     GdkEventCrossing *event);
 184 static gboolean gtk_tree_view_button_press         (GtkWidget        *widget,
 185                                                     GdkEventButton   *event);
 186 static gboolean gtk_tree_view_button_release       (GtkWidget        *widget,
 187                                                     GdkEventButton   *event);
 188 static gboolean gtk_tree_view_grab_broken          (GtkWidget          *widget,
 189                                                     GdkEventGrabBroken *event);
 190 #if 0
 191 static gboolean gtk_tree_view_configure            (GtkWidget         *widget,
 192                                                     GdkEventConfigure *event);
 193 #endif
 194
 195 static void     gtk_tree_view_set_focus_child      (GtkContainer     *container,
 196                                                     GtkWidget        *child);
 197 static gint     gtk_tree_view_focus_out            (GtkWidget        *widget,
 198                                                     GdkEventFocus    *event);
 199 static gint     gtk_tree_view_focus                (GtkWidget        *widget,
 200                                                     GtkDirectionType  direction);
 201 static void     gtk_tree_view_grab_focus           (GtkWidget        *widget);
 202 static void     gtk_tree_view_style_set            (GtkWidget        *widget,
 203                                                     GtkStyle         *previous_style);
 204 static void     gtk_tree_view_grab_notify          (GtkWidget        *widget,
 205                                                     gboolean          was_grabbed);
 206 static void     gtk_tree_view_state_changed        (GtkWidget        *widget,
 207                                                     GtkStateType      previous_state);
 208
 209 /* container signals */
 210 static void     gtk_tree_view_remove               (GtkContainer     *container,
 211                                                     GtkWidget        *widget);
 212 static void     gtk_tree_view_forall               (GtkContainer     *container,
 213                                                     gboolean          include_internals,
 214                                                     GtkCallback       callback,
 215                                                     gpointer          callback_data);
 216
 217 /* Source side drag signals */
 218 static void gtk_tree_view_drag_begin       (GtkWidget        *widget,
 219                                             GdkDragContext   *context);
 220 static void gtk_tree_view_drag_end         (GtkWidget        *widget,
 221                                             GdkDragContext   *context);
 222 static void gtk_tree_view_drag_data_get    (GtkWidget        *widget,
 223                                             GdkDragContext   *context,
 224                                             GtkSelectionData *selection_data,
 225                                             guint             info,
 226                                             guint             time);
 227 static void gtk_tree_view_drag_data_delete (GtkWidget        *widget,
 228                                             GdkDragContext   *context);
 229
 230 /* Target side drag signals */
 231 static void     gtk_tree_view_drag_leave         (GtkWidget        *widget,
 232                                                   GdkDragContext   *context,
 233                                                   guint             time);
 234 static gboolean gtk_tree_view_drag_motion        (GtkWidget        *widget,
 235                                                   GdkDragContext   *context,
 236                                                   gint              x,
 237                                                   gint              y,
 238                                                   guint             time);
 239 static gboolean gtk_tree_view_drag_drop          (GtkWidget        *widget,
 240                                                   GdkDragContext   *context,
 241                                                   gint              x,
 242                                                   gint              y,
 243                                                   guint             time);
 244 static void     gtk_tree_view_drag_data_received (GtkWidget        *widget,
 245                                                   GdkDragContext   *context,
 246                                                   gint              x,
 247                                                   gint              y,
 248                                                   GtkSelectionData *selection_data,
 249                                                   guint             info,
 250                                                   guint             time);
 251
 252 /* tree_model signals */
 253 static void     gtk_tree_view_set_hadjustment             (GtkTreeView     *tree_view,
 254                                                            GtkAdjustment   *adjustment);
 255 static void     gtk_tree_view_set_vadjustment             (GtkTreeView     *tree_view,
 256                                                            GtkAdjustment   *adjustment);
 257 static gboolean gtk_tree_view_real_move_cursor            (GtkTreeView     *tree_view,
 258                                                            GtkMovementStep  step,
 259                                                            gint             count);
 260 static gboolean gtk_tree_view_real_select_all             (GtkTreeView     *tree_view);
 261 static gboolean gtk_tree_view_real_unselect_all           (GtkTreeView     *tree_view);
 262 static gboolean gtk_tree_view_real_select_cursor_row      (GtkTreeView     *tree_view,
 263                                                            gboolean         start_editing);
 264 static gboolean gtk_tree_view_real_toggle_cursor_row      (GtkTreeView     *tree_view);
 265 static gboolean gtk_tree_view_real_expand_collapse_cursor_row (GtkTreeView     *tree_view,
 266                                                                gboolean         logical,
 267                                                                gboolean         expand,
 268                                                                gboolean         open_all);
 269 static gboolean gtk_tree_view_real_select_cursor_parent   (GtkTreeView     *tree_view);
 270 static void gtk_tree_view_row_changed                     (GtkTreeModel    *model,
 271                                                            GtkTreePath     *path,
 272                                                            GtkTreeIter     *iter,
 273                                                            gpointer         data);
 274 static void gtk_tree_view_row_inserted                    (GtkTreeModel    *model,
 275                                                            GtkTreePath     *path,
 276                                                            GtkTreeIter     *iter,
 277                                                            gpointer         data);
 278 static void gtk_tree_view_row_has_child_toggled           (GtkTreeModel    *model,
 279                                                            GtkTreePath     *path,
 280                                                            GtkTreeIter     *iter,
 281                                                            gpointer         data);
 282 static void gtk_tree_view_row_deleted                     (GtkTreeModel    *model,
 283                                                            GtkTreePath     *path,
 284                                                            gpointer         data);
 285 static void gtk_tree_view_rows_reordered                  (GtkTreeModel    *model,
 286                                                            GtkTreePath     *parent,
 287                                                            GtkTreeIter     *iter,
 288                                                            gint            *new_order,
 289                                                            gpointer         data);
 290
 291 /* Incremental reflow */
 292 static gboolean validate_row             (GtkTreeView *tree_view,
 293                                           GtkRBTree   *tree,
 294                                           GtkRBNode   *node,
 295                                           GtkTreeIter *iter,
 296                                           GtkTreePath *path);
 297 static void     validate_visible_area    (GtkTreeView *tree_view);
 298 static gboolean validate_rows_handler    (GtkTreeView *tree_view);
 299 static gboolean do_validate_rows         (GtkTreeView *tree_view,
 300                                           gboolean     size_request);
 301 static gboolean validate_rows            (GtkTreeView *tree_view);
 302 static gboolean presize_handler_callback (gpointer     data);
 303 static void     install_presize_handler  (GtkTreeView *tree_view);
 304 static void     install_scroll_sync_handler (GtkTreeView *tree_view);
 305 static void     gtk_tree_view_set_top_row   (GtkTreeView *tree_view,
 306                                              GtkTreePath *path,
 307                                              gint         offset);
 308 static void     gtk_tree_view_dy_to_top_row (GtkTreeView *tree_view);
 309 static void     gtk_tree_view_top_row_to_dy (GtkTreeView *tree_view);
 310 static void     invalidate_empty_focus      (GtkTreeView *tree_view);
 311
 312 /* Internal functions */
 313 static gboolean gtk_tree_view_is_expander_column             (GtkTreeView        *tree_view,
 314                                                               GtkTreeViewColumn  *column);
 315 static void     gtk_tree_view_add_move_binding               (GtkBindingSet      *binding_set,
 316                                                               guint               keyval,
 317                                                               guint               modmask,
 318                                                               gboolean            add_shifted_binding,
 319                                                               GtkMovementStep     step,
 320                                                               gint                count);
 321 static gint     gtk_tree_view_unref_and_check_selection_tree (GtkTreeView        *tree_view,
 322                                                               GtkRBTree          *tree);
 323 static void     gtk_tree_view_queue_draw_path                (GtkTreeView        *tree_view,
 324                                                               GtkTreePath        *path,
 325                                                               const GdkRectangle *clip_rect);
 326 static void     gtk_tree_view_queue_draw_arrow               (GtkTreeView        *tree_view,
 327                                                               GtkRBTree          *tree,
 328                                                               GtkRBNode          *node);
 329 static void     gtk_tree_view_draw_arrow                     (GtkTreeView        *tree_view,
 330                                                               cairo_t            *cr,
 331                                                               GtkRBTree          *tree,
 332                                                               GtkRBNode          *node,
 333                                                               gint                x,
 334                                                               gint                y);
 335 static void     gtk_tree_view_get_arrow_xrange               (GtkTreeView        *tree_view,
 336                                                               GtkRBTree          *tree,
 337                                                               gint               *x1,
 338                                                               gint               *x2);
 339 static gint     gtk_tree_view_new_column_width               (GtkTreeView        *tree_view,
 340                                                               gint                i,
 341                                                               gint               *x);
 342 static void     gtk_tree_view_adjustment_changed             (GtkAdjustment      *adjustment,
 343                                                               GtkTreeView        *tree_view);
 344 static void     gtk_tree_view_build_tree                     (GtkTreeView        *tree_view,
 345                                                               GtkRBTree          *tree,
 346                                                               GtkTreeIter        *iter,
 347                                                               gint                depth,
 348                                                               gboolean            recurse);
 349 static void     gtk_tree_view_clamp_node_visible             (GtkTreeView        *tree_view,
 350                                                               GtkRBTree          *tree,
 351                                                               GtkRBNode          *node);
 352 static void     gtk_tree_view_clamp_column_visible           (GtkTreeView        *tree_view,
 353                                                               GtkTreeViewColumn  *column,
 354                                                               gboolean            focus_to_cell);
 355 static gboolean gtk_tree_view_maybe_begin_dragging_row       (GtkTreeView        *tree_view,
 356                                                               GdkEventMotion     *event);
 357 static void     gtk_tree_view_focus_to_cursor                (GtkTreeView        *tree_view);
 358 static void     gtk_tree_view_move_cursor_up_down            (GtkTreeView        *tree_view,
 359                                                               gint                count);
 360 static void     gtk_tree_view_move_cursor_page_up_down       (GtkTreeView        *tree_view,
 361                                                               gint                count);
 362 static void     gtk_tree_view_move_cursor_left_right         (GtkTreeView        *tree_view,
 363                                                               gint                count);
 364 static void     gtk_tree_view_move_cursor_start_end          (GtkTreeView        *tree_view,
 365                                                               gint                count);
 366 static gboolean gtk_tree_view_real_collapse_row              (GtkTreeView        *tree_view,
 367                                                               GtkTreePath        *path,
 368                                                               GtkRBTree          *tree,
 369                                                               GtkRBNode          *node,
 370                                                               gboolean            animate);
 371 static gboolean gtk_tree_view_real_expand_row                (GtkTreeView        *tree_view,
 372                                                               GtkTreePath        *path,
 373                                                               GtkRBTree          *tree,
 374                                                               GtkRBNode          *node,
 375                                                               gboolean            open_all,
 376                                                               gboolean            animate);
 377 static void     gtk_tree_view_real_set_cursor                (GtkTreeView        *tree_view,
 378                                                               GtkTreePath        *path,
 379                                                               gboolean            clear_and_select,
 380                                                               gboolean            clamp_node);
 381 static gboolean gtk_tree_view_has_special_cell               (GtkTreeView        *tree_view);
 382 static void     column_sizing_notify                         (GObject            *object,
 383                                                               GParamSpec         *pspec,
 384                                                               gpointer            data);
 385 static gboolean expand_collapse_timeout                      (gpointer            data);
 386 static void     add_expand_collapse_timeout                  (GtkTreeView        *tree_view,
 387                                                               GtkRBTree          *tree,
 388                                                               GtkRBNode          *node,
 389                                                               gboolean            expand);
 390 static void     remove_expand_collapse_timeout               (GtkTreeView        *tree_view);
 391 static void     cancel_arrow_animation                       (GtkTreeView        *tree_view);
 392 static gboolean do_expand_collapse                           (GtkTreeView        *tree_view);
 393 static void     gtk_tree_view_stop_rubber_band               (GtkTreeView        *tree_view);
 394 static void     update_prelight                              (GtkTreeView        *tree_view,
 395                                                               int                 x,
 396                                                               int                 y);
 397
 398 /* interactive search */
 399 static void     gtk_tree_view_ensure_interactive_directory (GtkTreeView *tree_view);
 400 static void     gtk_tree_view_search_dialog_hide        (GtkWidget        *search_dialog,
 401                                                          GtkTreeView      *tree_view,
 402                                                          GdkDevice        *device);
 403 static void     gtk_tree_view_search_position_func      (GtkTreeView      *tree_view,
 404                                                          GtkWidget        *search_dialog,
 405                                                          gpointer          user_data);
 406 static void     gtk_tree_view_search_disable_popdown    (GtkEntry         *entry,
 407                                                          GtkMenu          *menu,
 408                                                          gpointer          data);
 409 static void     gtk_tree_view_search_preedit_changed    (GtkIMContext     *im_context,
 410                                                          GtkTreeView      *tree_view);
 411 static void     gtk_tree_view_search_activate           (GtkEntry         *entry,
 412                                                          GtkTreeView      *tree_view);
 413 static gboolean gtk_tree_view_real_search_enable_popdown(gpointer          data);
 414 static void     gtk_tree_view_search_enable_popdown     (GtkWidget        *widget,
 415                                                          gpointer          data);
 416 static gboolean gtk_tree_view_search_delete_event       (GtkWidget        *widget,
 417                                                          GdkEventAny      *event,
 418                                                          GtkTreeView      *tree_view);
 419 static gboolean gtk_tree_view_search_button_press_event (GtkWidget        *widget,
 420                                                          GdkEventButton   *event,
 421                                                          GtkTreeView      *tree_view);
 422 static gboolean gtk_tree_view_search_scroll_event       (GtkWidget        *entry,
 423                                                          GdkEventScroll   *event,
 424                                                          GtkTreeView      *tree_view);
 425 static gboolean gtk_tree_view_search_key_press_event    (GtkWidget        *entry,
 426                                                          GdkEventKey      *event,
 427                                                          GtkTreeView      *tree_view);
 428 static gboolean gtk_tree_view_search_move               (GtkWidget        *window,
 429                                                          GtkTreeView      *tree_view,
 430                                                          gboolean          up);
 431 static gboolean gtk_tree_view_search_equal_func         (GtkTreeModel     *model,
 432                                                          gint              column,
 433                                                          const gchar      *key,
 434                                                          GtkTreeIter      *iter,
 435                                                          gpointer          search_data);
 436 static gboolean gtk_tree_view_search_iter               (GtkTreeModel     *model,
 437                                                          GtkTreeSelection *selection,
 438                                                          GtkTreeIter      *iter,
 439                                                          const gchar      *text,
 440                                                          gint             *count,
 441                                                          gint              n);
 442 static void     gtk_tree_view_search_init               (GtkWidget        *entry,
 443                                                          GtkTreeView      *tree_view);
 444 static void     gtk_tree_view_put                       (GtkTreeView      *tree_view,
 445                                                          GtkWidget        *child_widget,
 446                                                          gint              x,
 447                                                          gint              y,
 448                                                          gint              width,
 449                                                          gint              height);
 450 static gboolean gtk_tree_view_start_editing             (GtkTreeView      *tree_view,
 451                                                          GtkTreePath      *cursor_path);
 452 static void gtk_tree_view_real_start_editing (GtkTreeView       *tree_view,
 453                                               GtkTreeViewColumn *column,
 454                                               GtkTreePath       *path,
 455                                               GtkCellEditable   *cell_editable,
 456                                               GdkRectangle      *cell_area,
 457                                               GdkEvent          *event,
 458                                               guint              flags);
 459 static void gtk_tree_view_stop_editing                  (GtkTreeView *tree_view,
 460                                                          gboolean     cancel_editing);
 461 static gboolean gtk_tree_view_real_start_interactive_search (GtkTreeView *tree_view,
 462                                                              GdkDevice   *device,
 463                                                              gboolean     keybinding);
 464 static gboolean gtk_tree_view_start_interactive_search      (GtkTreeView *tree_view);
 465 static GtkTreeViewColumn *gtk_tree_view_get_drop_column (GtkTreeView       *tree_view,
 466                                                          GtkTreeViewColumn *column,
 467                                                          gint               drop_position);
 468
 469 /* GtkBuildable */
 470 static void     gtk_tree_view_buildable_add_child          (GtkBuildable      *tree_view,
 471                                                             GtkBuilder        *builder,
 472                                                             GObject           *child,
 473                                                             const gchar       *type);
 474 static GObject *gtk_tree_view_buildable_get_internal_child (GtkBuildable      *buildable,
 475                                                             GtkBuilder        *builder,
 476                                                             const gchar       *childname);
 477 static void     gtk_tree_view_buildable_init               (GtkBuildableIface *iface);
 478
 479
 480 static gboolean scroll_row_timeout                   (gpointer     data);
 481 static void     add_scroll_timeout                   (GtkTreeView *tree_view);
 482 static void     remove_scroll_timeout                (GtkTreeView *tree_view);
 483
 484 static guint tree_view_signals [LAST_SIGNAL] = { 0 };
 485
 486 \f
 487
 488 /* GType Methods
 489  */
 490
 491 G_DEFINE_TYPE_WITH_CODE (GtkTreeView, gtk_tree_view, GTK_TYPE_CONTAINER,
 492                          G_IMPLEMENT_INTERFACE (GTK_TYPE_BUILDABLE,
 493                                                 gtk_tree_view_buildable_init)
 494                          G_IMPLEMENT_INTERFACE (GTK_TYPE_SCROLLABLE, NULL))
 495
 496 static void
 497 gtk_tree_view_class_init (GtkTreeViewClass *class)
 498 {
 499   GObjectClass *o_class;
 500   GtkWidgetClass *widget_class;
 501   GtkContainerClass *container_class;
 502   GtkBindingSet *binding_set;
 503
 504   binding_set = gtk_binding_set_by_class (class);
 505
 506   o_class = (GObjectClass *) class;
 507   widget_class = (GtkWidgetClass *) class;
 508   container_class = (GtkContainerClass *) class;
 509
 510   /* GObject signals */
 511   o_class->set_property = gtk_tree_view_set_property;
 512   o_class->get_property = gtk_tree_view_get_property;
 513   o_class->finalize = gtk_tree_view_finalize;
 514
 515   /* GtkWidget signals */
 516   widget_class->destroy = gtk_tree_view_destroy;
 517   widget_class->map = gtk_tree_view_map;
 518   widget_class->realize = gtk_tree_view_realize;
 519   widget_class->unrealize = gtk_tree_view_unrealize;
 520   widget_class->size_request = gtk_tree_view_size_request;
 521   widget_class->size_allocate = gtk_tree_view_size_allocate;
 522   widget_class->button_press_event = gtk_tree_view_button_press;
 523   widget_class->button_release_event = gtk_tree_view_button_release;
 524   widget_class->grab_broken_event = gtk_tree_view_grab_broken;
 525   /*widget_class->configure_event = gtk_tree_view_configure;*/
 526   widget_class->motion_notify_event = gtk_tree_view_motion;
 527   widget_class->draw = gtk_tree_view_draw;
 528   widget_class->key_press_event = gtk_tree_view_key_press;
 529   widget_class->key_release_event = gtk_tree_view_key_release;
 530   widget_class->enter_notify_event = gtk_tree_view_enter_notify;
 531   widget_class->leave_notify_event = gtk_tree_view_leave_notify;
 532   widget_class->focus_out_event = gtk_tree_view_focus_out;
 533   widget_class->drag_begin = gtk_tree_view_drag_begin;
 534   widget_class->drag_end = gtk_tree_view_drag_end;
 535   widget_class->drag_data_get = gtk_tree_view_drag_data_get;
 536   widget_class->drag_data_delete = gtk_tree_view_drag_data_delete;
 537   widget_class->drag_leave = gtk_tree_view_drag_leave;
 538   widget_class->drag_motion = gtk_tree_view_drag_motion;
 539   widget_class->drag_drop = gtk_tree_view_drag_drop;
 540   widget_class->drag_data_received = gtk_tree_view_drag_data_received;
 541   widget_class->focus = gtk_tree_view_focus;
 542   widget_class->grab_focus = gtk_tree_view_grab_focus;
 543   widget_class->style_set = gtk_tree_view_style_set;
 544   widget_class->grab_notify = gtk_tree_view_grab_notify;
 545   widget_class->state_changed = gtk_tree_view_state_changed;
 546
 547   /* GtkContainer signals */
 548   container_class->remove = gtk_tree_view_remove;
 549   container_class->forall = gtk_tree_view_forall;
 550   container_class->set_focus_child = gtk_tree_view_set_focus_child;
 551
 552   class->move_cursor = gtk_tree_view_real_move_cursor;
 553   class->select_all = gtk_tree_view_real_select_all;
 554   class->unselect_all = gtk_tree_view_real_unselect_all;
 555   class->select_cursor_row = gtk_tree_view_real_select_cursor_row;
 556   class->toggle_cursor_row = gtk_tree_view_real_toggle_cursor_row;
 557   class->expand_collapse_cursor_row = gtk_tree_view_real_expand_collapse_cursor_row;
 558   class->select_cursor_parent = gtk_tree_view_real_select_cursor_parent;
 559   class->start_interactive_search = gtk_tree_view_start_interactive_search;
 560
 561   /* Properties */
 562
 563   g_object_class_install_property (o_class,
 564                                    PROP_MODEL,
 565                                    g_param_spec_object ("model",
 566                                                         P_("TreeView Model"),
 567                                                         P_("The model for the tree view"),
 568                                                         GTK_TYPE_TREE_MODEL,
 569                                                         GTK_PARAM_READWRITE));
 570
 571   g_object_class_override_property (o_class, PROP_HADJUSTMENT, "hadjustment");
 572   g_object_class_override_property (o_class, PROP_VADJUSTMENT, "vadjustment");
 573
 574   g_object_class_install_property (o_class,
 575                                    PROP_HEADERS_VISIBLE,
 576                                    g_param_spec_boolean ("headers-visible",
 577                                                          P_("Headers Visible"),
 578                                                          P_("Show the column header buttons"),
 579                                                          TRUE,
 580                                                          GTK_PARAM_READWRITE));
 581
 582   g_object_class_install_property (o_class,
 583                                    PROP_HEADERS_CLICKABLE,
 584                                    g_param_spec_boolean ("headers-clickable",
 585                                                          P_("Headers Clickable"),
 586                                                          P_("Column headers respond to click events"),
 587                                                          TRUE,
 588                                                          GTK_PARAM_READWRITE));
 589
 590   g_object_class_install_property (o_class,
 591                                    PROP_EXPANDER_COLUMN,
 592                                    g_param_spec_object ("expander-column",
 593                                                         P_("Expander Column"),
 594                                                         P_("Set the column for the expander column"),
 595                                                         GTK_TYPE_TREE_VIEW_COLUMN,
 596                                                         GTK_PARAM_READWRITE));
 597
 598   g_object_class_install_property (o_class,
 599                                    PROP_REORDERABLE,
 600                                    g_param_spec_boolean ("reorderable",
 601                                                          P_("Reorderable"),
 602                                                          P_("View is reorderable"),
 603                                                          FALSE,
 604                                                          GTK_PARAM_READWRITE));
 605
 606   g_object_class_install_property (o_class,
 607                                    PROP_RULES_HINT,
 608                                    g_param_spec_boolean ("rules-hint",
 609                                                          P_("Rules Hint"),
 610                                                          P_("Set a hint to the theme engine to draw rows in alternating colors"),
 611                                                          FALSE,
 612                                                          GTK_PARAM_READWRITE));
 613
 614     g_object_class_install_property (o_class,
 615                                      PROP_ENABLE_SEARCH,
 616                                      g_param_spec_boolean ("enable-search",
 617                                                            P_("Enable Search"),
 618                                                            P_("View allows user to search through columns interactively"),
 619                                                            TRUE,
 620                                                            GTK_PARAM_READWRITE));
 621
 622     g_object_class_install_property (o_class,
 623                                      PROP_SEARCH_COLUMN,
 624                                      g_param_spec_int ("search-column",
 625                                                        P_("Search Column"),
 626                                                        P_("Model column to search through during interactive search"),
 627                                                        -1,
 628                                                        G_MAXINT,
 629                                                        -1,
 630                                                        GTK_PARAM_READWRITE));
 631
 632     /**
 633      * GtkTreeView:fixed-height-mode:
 634      *
 635      * Setting the ::fixed-height-mode property to %TRUE speeds up
 636      * #GtkTreeView by assuming that all rows have the same height.
 637      * Only enable this option if all rows are the same height.
 638      * Please see gtk_tree_view_set_fixed_height_mode() for more
 639      * information on this option.
 640      *
 641      * Since: 2.4
 642      **/
 643     g_object_class_install_property (o_class,
 644                                      PROP_FIXED_HEIGHT_MODE,
 645                                      g_param_spec_boolean ("fixed-height-mode",
 646                                                            P_("Fixed Height Mode"),
 647                                                            P_("Speeds up GtkTreeView by assuming that all rows have the same height"),
 648                                                            FALSE,
 649                                                            GTK_PARAM_READWRITE));
 650
 651     /**
 652      * GtkTreeView:hover-selection:
 653      *
 654      * Enables or disables the hover selection mode of @tree_view.
 655      * Hover selection makes the selected row follow the pointer.
 656      * Currently, this works only for the selection modes
 657      * %GTK_SELECTION_SINGLE and %GTK_SELECTION_BROWSE.
 658      *
 659      * This mode is primarily intended for treeviews in popups, e.g.
 660      * in #GtkComboBox or #GtkEntryCompletion.
 661      *
 662      * Since: 2.6
 663      */
 664     g_object_class_install_property (o_class,
 665                                      PROP_HOVER_SELECTION,
 666                                      g_param_spec_boolean ("hover-selection",
 667                                                            P_("Hover Selection"),
 668                                                            P_("Whether the selection should follow the pointer"),
 669                                                            FALSE,
 670                                                            GTK_PARAM_READWRITE));
 671
 672     /**
 673      * GtkTreeView:hover-expand:
 674      *
 675      * Enables or disables the hover expansion mode of @tree_view.
 676      * Hover expansion makes rows expand or collapse if the pointer moves
 677      * over them.
 678      *
 679      * This mode is primarily intended for treeviews in popups, e.g.
 680      * in #GtkComboBox or #GtkEntryCompletion.
 681      *
 682      * Since: 2.6
 683      */
 684     g_object_class_install_property (o_class,
 685                                      PROP_HOVER_EXPAND,
 686                                      g_param_spec_boolean ("hover-expand",
 687                                                            P_("Hover Expand"),
 688                                                            P_("Whether rows should be expanded/collapsed when the pointer moves over them"),
 689                                                            FALSE,
 690                                                            GTK_PARAM_READWRITE));
 691
 692     /**
 693      * GtkTreeView:show-expanders:
 694      *
 695      * %TRUE if the view has expanders.
 696      *
 697      * Since: 2.12
 698      */
 699     g_object_class_install_property (o_class,
 700                                      PROP_SHOW_EXPANDERS,
 701                                      g_param_spec_boolean ("show-expanders",
 702                                                            P_("Show Expanders"),
 703                                                            P_("View has expanders"),
 704                                                            TRUE,
 705                                                            GTK_PARAM_READWRITE));
 706
 707     /**
 708      * GtkTreeView:level-indentation:
 709      *
 710      * Extra indentation for each level.
 711      *
 712      * Since: 2.12
 713      */
 714     g_object_class_install_property (o_class,
 715                                      PROP_LEVEL_INDENTATION,
 716                                      g_param_spec_int ("level-indentation",
 717                                                        P_("Level Indentation"),
 718                                                        P_("Extra indentation for each level"),
 719                                                        0,
 720                                                        G_MAXINT,
 721                                                        0,
 722                                                        GTK_PARAM_READWRITE));
 723
 724     g_object_class_install_property (o_class,
 725                                      PROP_RUBBER_BANDING,
 726                                      g_param_spec_boolean ("rubber-banding",
 727                                                            P_("Rubber Banding"),
 728                                                            P_("Whether to enable selection of multiple items by dragging the mouse pointer"),
 729                                                            FALSE,
 730                                                            GTK_PARAM_READWRITE));
 731
 732     g_object_class_install_property (o_class,
 733                                      PROP_ENABLE_GRID_LINES,
 734                                      g_param_spec_enum ("enable-grid-lines",
 735                                                         P_("Enable Grid Lines"),
 736                                                         P_("Whether grid lines should be drawn in the tree view"),
 737                                                         GTK_TYPE_TREE_VIEW_GRID_LINES,
 738                                                         GTK_TREE_VIEW_GRID_LINES_NONE,
 739                                                         GTK_PARAM_READWRITE));
 740
 741     g_object_class_install_property (o_class,
 742                                      PROP_ENABLE_TREE_LINES,
 743                                      g_param_spec_boolean ("enable-tree-lines",
 744                                                            P_("Enable Tree Lines"),
 745                                                            P_("Whether tree lines should be drawn in the tree view"),
 746                                                            FALSE,
 747                                                            GTK_PARAM_READWRITE));
 748
 749     g_object_class_install_property (o_class,
 750                                      PROP_TOOLTIP_COLUMN,
 751                                      g_param_spec_int ("tooltip-column",
 752                                                        P_("Tooltip Column"),
 753                                                        P_("The column in the model containing the tooltip texts for the rows"),
 754                                                        -1,
 755                                                        G_MAXINT,
 756                                                        -1,
 757                                                        GTK_PARAM_READWRITE));
 758
 759   /* Style properties */
 760 #define _TREE_VIEW_EXPANDER_SIZE 12
 761 #define _TREE_VIEW_VERTICAL_SEPARATOR 2
 762 #define _TREE_VIEW_HORIZONTAL_SEPARATOR 2
 763
 764   gtk_widget_class_install_style_property (widget_class,
 765                                            g_param_spec_int ("expander-size",
 766                                                              P_("Expander Size"),
 767                                                              P_("Size of the expander arrow"),
 768                                                              0,
 769                                                              G_MAXINT,
 770                                                              _TREE_VIEW_EXPANDER_SIZE,
 771                                                              GTK_PARAM_READABLE));
 772
 773   gtk_widget_class_install_style_property (widget_class,
 774                                            g_param_spec_int ("vertical-separator",
 775                                                              P_("Vertical Separator Width"),
 776                                                              P_("Vertical space between cells.  Must be an even number"),
 777                                                              0,
 778                                                              G_MAXINT,
 779                                                              _TREE_VIEW_VERTICAL_SEPARATOR,
 780                                                              GTK_PARAM_READABLE));
 781
 782   gtk_widget_class_install_style_property (widget_class,
 783                                            g_param_spec_int ("horizontal-separator",
 784                                                              P_("Horizontal Separator Width"),
 785                                                              P_("Horizontal space between cells.  Must be an even number"),
 786                                                              0,
 787                                                              G_MAXINT,
 788                                                              _TREE_VIEW_HORIZONTAL_SEPARATOR,
 789                                                              GTK_PARAM_READABLE));
 790
 791   gtk_widget_class_install_style_property (widget_class,
 792                                            g_param_spec_boolean ("allow-rules",
 793                                                                  P_("Allow Rules"),
 794                                                                  P_("Allow drawing of alternating color rows"),
 795                                                                  TRUE,
 796                                                                  GTK_PARAM_READABLE));
 797
 798   gtk_widget_class_install_style_property (widget_class,
 799                                            g_param_spec_boolean ("indent-expanders",
 800                                                                  P_("Indent Expanders"),
 801                                                                  P_("Make the expanders indented"),
 802                                                                  TRUE,
 803                                                                  GTK_PARAM_READABLE));
 804
 805   gtk_widget_class_install_style_property (widget_class,
 806                                            g_param_spec_boxed ("even-row-color",
 807                                                                P_("Even Row Color"),
 808                                                                P_("Color to use for even rows"),
 809                                                                GDK_TYPE_COLOR,
 810                                                                GTK_PARAM_READABLE));
 811
 812   gtk_widget_class_install_style_property (widget_class,
 813                                            g_param_spec_boxed ("odd-row-color",
 814                                                                P_("Odd Row Color"),
 815                                                                P_("Color to use for odd rows"),
 816                                                                GDK_TYPE_COLOR,
 817                                                                GTK_PARAM_READABLE));
 818
 819   gtk_widget_class_install_style_property (widget_class,
 820                                            g_param_spec_int ("grid-line-width",
 821                                                              P_("Grid line width"),
 822                                                              P_("Width, in pixels, of the tree view grid lines"),
 823                                                              0, G_MAXINT, 1,
 824                                                              GTK_PARAM_READABLE));
 825
 826   gtk_widget_class_install_style_property (widget_class,
 827                                            g_param_spec_int ("tree-line-width",
 828                                                              P_("Tree line width"),
 829                                                              P_("Width, in pixels, of the tree view lines"),
 830                                                              0, G_MAXINT, 1,
 831                                                              GTK_PARAM_READABLE));
 832
 833   gtk_widget_class_install_style_property (widget_class,
 834                                            g_param_spec_string ("grid-line-pattern",
 835                                                                 P_("Grid line pattern"),
 836                                                                 P_("Dash pattern used to draw the tree view grid lines"),
 837                                                                 "\1\1",
 838                                                                 GTK_PARAM_READABLE));
 839
 840   gtk_widget_class_install_style_property (widget_class,
 841                                            g_param_spec_string ("tree-line-pattern",
 842                                                                 P_("Tree line pattern"),
 843                                                                 P_("Dash pattern used to draw the tree view lines"),
 844                                                                 "\1\1",
 845                                                                 GTK_PARAM_READABLE));
 846
 847   /* Signals */
 848   /**
 849    * GtkTreeView::row-activated:
 850    * @tree_view: the object on which the signal is emitted
 851    * @path: the #GtkTreePath for the activated row
 852    * @column: the #GtkTreeViewColumn in which the activation occurred
 853    *
 854    * The "row-activated" signal is emitted when the method
 855    * gtk_tree_view_row_activated() is called or the user double clicks
 856    * a treeview row. It is also emitted when a non-editable row is
 857    * selected and one of the keys: Space, Shift+Space, Return or
 858    * Enter is pressed.
 859    *
 860    * For selection handling refer to the <link linkend="TreeWidget">tree
 861    * widget conceptual overview</link> as well as #GtkTreeSelection.
 862    */
 863   tree_view_signals[ROW_ACTIVATED] =
 864     g_signal_new (I_("row-activated"),
 865                   G_TYPE_FROM_CLASS (o_class),
 866                   G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
 867                   G_STRUCT_OFFSET (GtkTreeViewClass, row_activated),
 868                   NULL, NULL,
 869                   _gtk_marshal_VOID__BOXED_OBJECT,
 870                   G_TYPE_NONE, 2,
 871                   GTK_TYPE_TREE_PATH,
 872                   GTK_TYPE_TREE_VIEW_COLUMN);
 873
 874   /**
 875    * GtkTreeView::test-expand-row:
 876    * @tree_view: the object on which the signal is emitted
 877    * @iter: the tree iter of the row to expand
 878    * @path: a tree path that points to the row
 879    *
 880    * The given row is about to be expanded (show its children nodes). Use this
 881    * signal if you need to control the expandability of individual rows.
 882    *
 883    * Returns: %FALSE to allow expansion, %TRUE to reject
 884    */
 885   tree_view_signals[TEST_EXPAND_ROW] =
 886     g_signal_new (I_("test-expand-row"),
 887                   G_TYPE_FROM_CLASS (o_class),
 888                   G_SIGNAL_RUN_LAST,
 889                   G_STRUCT_OFFSET (GtkTreeViewClass, test_expand_row),
 890                   _gtk_boolean_handled_accumulator, NULL,
 891                   _gtk_marshal_BOOLEAN__BOXED_BOXED,
 892                   G_TYPE_BOOLEAN, 2,
 893                   GTK_TYPE_TREE_ITER,
 894                   GTK_TYPE_TREE_PATH);
 895
 896   /**
 897    * GtkTreeView::test-collapse-row:
 898    * @tree_view: the object on which the signal is emitted
 899    * @iter: the tree iter of the row to collapse
 900    * @path: a tree path that points to the row
 901    *
 902    * The given row is about to be collapsed (hide its children nodes). Use this
 903    * signal if you need to control the collapsibility of individual rows.
 904    *
 905    * Returns: %FALSE to allow collapsing, %TRUE to reject
 906    */
 907   tree_view_signals[TEST_COLLAPSE_ROW] =
 908     g_signal_new (I_("test-collapse-row"),
 909                   G_TYPE_FROM_CLASS (o_class),
 910                   G_SIGNAL_RUN_LAST,
 911                   G_STRUCT_OFFSET (GtkTreeViewClass, test_collapse_row),
 912                   _gtk_boolean_handled_accumulator, NULL,
 913                   _gtk_marshal_BOOLEAN__BOXED_BOXED,
 914                   G_TYPE_BOOLEAN, 2,
 915                   GTK_TYPE_TREE_ITER,
 916                   GTK_TYPE_TREE_PATH);
 917
 918   /**
 919    * GtkTreeView::row-expanded:
 920    * @tree_view: the object on which the signal is emitted
 921    * @iter: the tree iter of the expanded row
 922    * @path: a tree path that points to the row
 923    *
 924    * The given row has been expanded (child nodes are shown).
 925    */
 926   tree_view_signals[ROW_EXPANDED] =
 927     g_signal_new (I_("row-expanded"),
 928                   G_TYPE_FROM_CLASS (o_class),
 929                   G_SIGNAL_RUN_LAST,
 930                   G_STRUCT_OFFSET (GtkTreeViewClass, row_expanded),
 931                   NULL, NULL,
 932                   _gtk_marshal_VOID__BOXED_BOXED,
 933                   G_TYPE_NONE, 2,
 934                   GTK_TYPE_TREE_ITER,
 935                   GTK_TYPE_TREE_PATH);
 936
 937   /**
 938    * GtkTreeView::row-collapsed:
 939    * @tree_view: the object on which the signal is emitted
 940    * @iter: the tree iter of the collapsed row
 941    * @path: a tree path that points to the row
 942    *
 943    * The given row has been collapsed (child nodes are hidden).
 944    */
 945   tree_view_signals[ROW_COLLAPSED] =
 946     g_signal_new (I_("row-collapsed"),
 947                   G_TYPE_FROM_CLASS (o_class),
 948                   G_SIGNAL_RUN_LAST,
 949                   G_STRUCT_OFFSET (GtkTreeViewClass, row_collapsed),
 950                   NULL, NULL,
 951                   _gtk_marshal_VOID__BOXED_BOXED,
 952                   G_TYPE_NONE, 2,
 953                   GTK_TYPE_TREE_ITER,
 954                   GTK_TYPE_TREE_PATH);
 955
 956   /**
 957    * GtkTreeView::columns-changed:
 958    * @tree_view: the object on which the signal is emitted
 959    *
 960    * The number of columns of the treeview has changed.
 961    */
 962   tree_view_signals[COLUMNS_CHANGED] =
 963     g_signal_new (I_("columns-changed"),
 964                   G_TYPE_FROM_CLASS (o_class),
 965                   G_SIGNAL_RUN_LAST,
 966                   G_STRUCT_OFFSET (GtkTreeViewClass, columns_changed),
 967                   NULL, NULL,
 968                   _gtk_marshal_VOID__VOID,
 969                   G_TYPE_NONE, 0);
 970
 971   /**
 972    * GtkTreeView::cursor-changed:
 973    * @tree_view: the object on which the signal is emitted
 974    *
 975    * The position of the cursor (focused cell) has changed.
 976    */
 977   tree_view_signals[CURSOR_CHANGED] =
 978     g_signal_new (I_("cursor-changed"),
 979                   G_TYPE_FROM_CLASS (o_class),
 980                   G_SIGNAL_RUN_LAST,
 981                   G_STRUCT_OFFSET (GtkTreeViewClass, cursor_changed),
 982                   NULL, NULL,
 983                   _gtk_marshal_VOID__VOID,
 984                   G_TYPE_NONE, 0);
 985
 986   tree_view_signals[MOVE_CURSOR] =
 987     g_signal_new (I_("move-cursor"),
 988                   G_TYPE_FROM_CLASS (o_class),
 989                   G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
 990                   G_STRUCT_OFFSET (GtkTreeViewClass, move_cursor),
 991                   NULL, NULL,
 992                   _gtk_marshal_BOOLEAN__ENUM_INT,
 993                   G_TYPE_BOOLEAN, 2,
 994                   GTK_TYPE_MOVEMENT_STEP,
 995                   G_TYPE_INT);
 996
 997   tree_view_signals[SELECT_ALL] =
 998     g_signal_new (I_("select-all"),
 999                   G_TYPE_FROM_CLASS (o_class),
1000                   G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
1001                   G_STRUCT_OFFSET (GtkTreeViewClass, select_all),
1002                   NULL, NULL,
1003                   _gtk_marshal_BOOLEAN__VOID,
1004                   G_TYPE_BOOLEAN, 0);
1005
1006   tree_view_signals[UNSELECT_ALL] =
1007     g_signal_new (I_("unselect-all"),
1008                   G_TYPE_FROM_CLASS (o_class),
1009                   G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
1010                   G_STRUCT_OFFSET (GtkTreeViewClass, unselect_all),
1011                   NULL, NULL,
1012                   _gtk_marshal_BOOLEAN__VOID,
1013                   G_TYPE_BOOLEAN, 0);
1014
1015   tree_view_signals[SELECT_CURSOR_ROW] =
1016     g_signal_new (I_("select-cursor-row"),
1017                   G_TYPE_FROM_CLASS (o_class),
1018                   G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
1019                   G_STRUCT_OFFSET (GtkTreeViewClass, select_cursor_row),
1020                   NULL, NULL,
1021                   _gtk_marshal_BOOLEAN__BOOLEAN,
1022                   G_TYPE_BOOLEAN, 1,
1023                   G_TYPE_BOOLEAN);
1024
1025   tree_view_signals[TOGGLE_CURSOR_ROW] =
1026     g_signal_new (I_("toggle-cursor-row"),
1027                   G_TYPE_FROM_CLASS (o_class),
1028                   G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
1029                   G_STRUCT_OFFSET (GtkTreeViewClass, toggle_cursor_row),
1030                   NULL, NULL,
1031                   _gtk_marshal_BOOLEAN__VOID,
1032                   G_TYPE_BOOLEAN, 0);
1033
1034   tree_view_signals[EXPAND_COLLAPSE_CURSOR_ROW] =
1035     g_signal_new (I_("expand-collapse-cursor-row"),
1036                   G_TYPE_FROM_CLASS (o_class),
1037                   G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
1038                   G_STRUCT_OFFSET (GtkTreeViewClass, expand_collapse_cursor_row),
1039                   NULL, NULL,
1040                   _gtk_marshal_BOOLEAN__BOOLEAN_BOOLEAN_BOOLEAN,
1041                   G_TYPE_BOOLEAN, 3,
1042                   G_TYPE_BOOLEAN,
1043                   G_TYPE_BOOLEAN,
1044                   G_TYPE_BOOLEAN);
1045
1046   tree_view_signals[SELECT_CURSOR_PARENT] =
1047     g_signal_new (I_("select-cursor-parent"),
1048                   G_TYPE_FROM_CLASS (o_class),
1049                   G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
1050                   G_STRUCT_OFFSET (GtkTreeViewClass, select_cursor_parent),
1051                   NULL, NULL,
1052                   _gtk_marshal_BOOLEAN__VOID,
1053                   G_TYPE_BOOLEAN, 0);
1054
1055   tree_view_signals[START_INTERACTIVE_SEARCH] =
1056     g_signal_new (I_("start-interactive-search"),
1057                   G_TYPE_FROM_CLASS (o_class),
1058                   G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
1059                   G_STRUCT_OFFSET (GtkTreeViewClass, start_interactive_search),
1060                   NULL, NULL,
1061                   _gtk_marshal_BOOLEAN__VOID,
1062                   G_TYPE_BOOLEAN, 0);
1063
1064   /* Key bindings */
1065   gtk_tree_view_add_move_binding (binding_set, GDK_KEY_Up, 0, TRUE,
1066                                   GTK_MOVEMENT_DISPLAY_LINES, -1);
1067   gtk_tree_view_add_move_binding (binding_set, GDK_KEY_KP_Up, 0, TRUE,
1068                                   GTK_MOVEMENT_DISPLAY_LINES, -1);
1069
1070   gtk_tree_view_add_move_binding (binding_set, GDK_KEY_Down, 0, TRUE,
1071                                   GTK_MOVEMENT_DISPLAY_LINES, 1);
1072   gtk_tree_view_add_move_binding (binding_set, GDK_KEY_KP_Down, 0, TRUE,
1073                                   GTK_MOVEMENT_DISPLAY_LINES, 1);
1074
1075   gtk_tree_view_add_move_binding (binding_set, GDK_KEY_p, GDK_CONTROL_MASK, FALSE,
1076                                   GTK_MOVEMENT_DISPLAY_LINES, -1);
1077
1078   gtk_tree_view_add_move_binding (binding_set, GDK_KEY_n, GDK_CONTROL_MASK, FALSE,
1079                                   GTK_MOVEMENT_DISPLAY_LINES, 1);
1080
1081   gtk_tree_view_add_move_binding (binding_set, GDK_KEY_Home, 0, TRUE,
1082                                   GTK_MOVEMENT_BUFFER_ENDS, -1);
1083   gtk_tree_view_add_move_binding (binding_set, GDK_KEY_KP_Home, 0, TRUE,
1084                                   GTK_MOVEMENT_BUFFER_ENDS, -1);
1085
1086   gtk_tree_view_add_move_binding (binding_set, GDK_KEY_End, 0, TRUE,
1087                                   GTK_MOVEMENT_BUFFER_ENDS, 1);
1088   gtk_tree_view_add_move_binding (binding_set, GDK_KEY_KP_End, 0, TRUE,
1089                                   GTK_MOVEMENT_BUFFER_ENDS, 1);
1090
1091   gtk_tree_view_add_move_binding (binding_set, GDK_KEY_Page_Up, 0, TRUE,
1092                                   GTK_MOVEMENT_PAGES, -1);
1093   gtk_tree_view_add_move_binding (binding_set, GDK_KEY_KP_Page_Up, 0, TRUE,
1094                                   GTK_MOVEMENT_PAGES, -1);
1095
1096   gtk_tree_view_add_move_binding (binding_set, GDK_KEY_Page_Down, 0, TRUE,
1097                                   GTK_MOVEMENT_PAGES, 1);
1098   gtk_tree_view_add_move_binding (binding_set, GDK_KEY_KP_Page_Down, 0, TRUE,
1099                                   GTK_MOVEMENT_PAGES, 1);
1100
1101
1102   gtk_binding_entry_add_signal (binding_set, GDK_KEY_Right, 0, "move-cursor", 2,
1103                                 G_TYPE_ENUM, GTK_MOVEMENT_VISUAL_POSITIONS,
1104                                 G_TYPE_INT, 1);
1105
1106   gtk_binding_entry_add_signal (binding_set, GDK_KEY_Left, 0, "move-cursor", 2,
1107                                 G_TYPE_ENUM, GTK_MOVEMENT_VISUAL_POSITIONS,
1108                                 G_TYPE_INT, -1);
1109
1110   gtk_binding_entry_add_signal (binding_set, GDK_KEY_KP_Right, 0, "move-cursor", 2,
1111                                 G_TYPE_ENUM, GTK_MOVEMENT_VISUAL_POSITIONS,
1112                                 G_TYPE_INT, 1);
1113
1114   gtk_binding_entry_add_signal (binding_set, GDK_KEY_KP_Left, 0, "move-cursor", 2,
1115                                 G_TYPE_ENUM, GTK_MOVEMENT_VISUAL_POSITIONS,
1116                                 G_TYPE_INT, -1);
1117
1118   gtk_binding_entry_add_signal (binding_set, GDK_KEY_Right, GDK_CONTROL_MASK,
1119                                 "move-cursor", 2,
1120                                 G_TYPE_ENUM, GTK_MOVEMENT_VISUAL_POSITIONS,
1121                                 G_TYPE_INT, 1);
1122
1123   gtk_binding_entry_add_signal (binding_set, GDK_KEY_Left, GDK_CONTROL_MASK,
1124                                 "move-cursor", 2,
1125                                 G_TYPE_ENUM, GTK_MOVEMENT_VISUAL_POSITIONS,
1126                                 G_TYPE_INT, -1);
1127
1128   gtk_binding_entry_add_signal (binding_set, GDK_KEY_KP_Right, GDK_CONTROL_MASK,
1129                                 "move-cursor", 2,
1130                                 G_TYPE_ENUM, GTK_MOVEMENT_VISUAL_POSITIONS,
1131                                 G_TYPE_INT, 1);
1132
1133   gtk_binding_entry_add_signal (binding_set, GDK_KEY_KP_Left, GDK_CONTROL_MASK,
1134                                 "move-cursor", 2,
1135                                 G_TYPE_ENUM, GTK_MOVEMENT_VISUAL_POSITIONS,
1136                                 G_TYPE_INT, -1);
1137
1138   gtk_binding_entry_add_signal (binding_set, GDK_KEY_space, GDK_CONTROL_MASK, "toggle-cursor-row", 0);
1139   gtk_binding_entry_add_signal (binding_set, GDK_KEY_KP_Space, GDK_CONTROL_MASK, "toggle-cursor-row", 0);
1140
1141   gtk_binding_entry_add_signal (binding_set, GDK_KEY_a, GDK_CONTROL_MASK, "select-all", 0);
1142   gtk_binding_entry_add_signal (binding_set, GDK_KEY_slash, GDK_CONTROL_MASK, "select-all", 0);
1143
1144   gtk_binding_entry_add_signal (binding_set, GDK_KEY_A, GDK_CONTROL_MASK | GDK_SHIFT_MASK, "unselect-all", 0);
1145   gtk_binding_entry_add_signal (binding_set, GDK_KEY_backslash, GDK_CONTROL_MASK, "unselect-all", 0);
1146
1147   gtk_binding_entry_add_signal (binding_set, GDK_KEY_space, GDK_SHIFT_MASK, "select-cursor-row", 1,
1148                                 G_TYPE_BOOLEAN, TRUE);
1149   gtk_binding_entry_add_signal (binding_set, GDK_KEY_KP_Space, GDK_SHIFT_MASK, "select-cursor-row", 1,
1150                                 G_TYPE_BOOLEAN, TRUE);
1151
1152   gtk_binding_entry_add_signal (binding_set, GDK_KEY_space, 0, "select-cursor-row", 1,
1153                                 G_TYPE_BOOLEAN, TRUE);
1154   gtk_binding_entry_add_signal (binding_set, GDK_KEY_KP_Space, 0, "select-cursor-row", 1,
1155                                 G_TYPE_BOOLEAN, TRUE);
1156   gtk_binding_entry_add_signal (binding_set, GDK_KEY_Return, 0, "select-cursor-row", 1,
1157                                 G_TYPE_BOOLEAN, TRUE);
1158   gtk_binding_entry_add_signal (binding_set, GDK_KEY_ISO_Enter, 0, "select-cursor-row", 1,
1159                                 G_TYPE_BOOLEAN, TRUE);
1160   gtk_binding_entry_add_signal (binding_set, GDK_KEY_KP_Enter, 0, "select-cursor-row", 1,
1161                                 G_TYPE_BOOLEAN, TRUE);
1162
1163   /* expand and collapse rows */
1164   gtk_binding_entry_add_signal (binding_set, GDK_KEY_plus, 0, "expand-collapse-cursor-row", 3,
1165                                 G_TYPE_BOOLEAN, TRUE,
1166                                 G_TYPE_BOOLEAN, TRUE,
1167                                 G_TYPE_BOOLEAN, FALSE);
1168
1169   gtk_binding_entry_add_signal (binding_set, GDK_KEY_asterisk, 0,
1170                                 "expand-collapse-cursor-row", 3,
1171                                 G_TYPE_BOOLEAN, TRUE,
1172                                 G_TYPE_BOOLEAN, TRUE,
1173                                 G_TYPE_BOOLEAN, TRUE);
1174   gtk_binding_entry_add_signal (binding_set, GDK_KEY_KP_Multiply, 0,
1175                                 "expand-collapse-cursor-row", 3,
1176                                 G_TYPE_BOOLEAN, TRUE,
1177                                 G_TYPE_BOOLEAN, TRUE,
1178                                 G_TYPE_BOOLEAN, TRUE);
1179
1180   gtk_binding_entry_add_signal (binding_set, GDK_KEY_slash, 0,
1181                                 "expand-collapse-cursor-row", 3,
1182                                 G_TYPE_BOOLEAN, TRUE,
1183                                 G_TYPE_BOOLEAN, FALSE,
1184                                 G_TYPE_BOOLEAN, FALSE);
1185   gtk_binding_entry_add_signal (binding_set, GDK_KEY_KP_Divide, 0,
1186                                 "expand-collapse-cursor-row", 3,
1187                                 G_TYPE_BOOLEAN, TRUE,
1188                                 G_TYPE_BOOLEAN, FALSE,
1189                                 G_TYPE_BOOLEAN, FALSE);
1190
1191   /* Not doable on US keyboards */
1192   gtk_binding_entry_add_signal (binding_set, GDK_KEY_plus, GDK_SHIFT_MASK, "expand-collapse-cursor-row", 3,
1193                                 G_TYPE_BOOLEAN, TRUE,
1194                                 G_TYPE_BOOLEAN, TRUE,
1195                                 G_TYPE_BOOLEAN, TRUE);
1196   gtk_binding_entry_add_signal (binding_set, GDK_KEY_KP_Add, 0, "expand-collapse-cursor-row", 3,
1197                                 G_TYPE_BOOLEAN, TRUE,
1198                                 G_TYPE_BOOLEAN, TRUE,
1199                                 G_TYPE_BOOLEAN, FALSE);
1200   gtk_binding_entry_add_signal (binding_set, GDK_KEY_KP_Add, GDK_SHIFT_MASK, "expand-collapse-cursor-row", 3,
1201                                 G_TYPE_BOOLEAN, TRUE,
1202                                 G_TYPE_BOOLEAN, TRUE,
1203                                 G_TYPE_BOOLEAN, TRUE);
1204   gtk_binding_entry_add_signal (binding_set, GDK_KEY_KP_Add, GDK_SHIFT_MASK, "expand-collapse-cursor-row", 3,
1205                                 G_TYPE_BOOLEAN, TRUE,
1206                                 G_TYPE_BOOLEAN, TRUE,
1207                                 G_TYPE_BOOLEAN, TRUE);
1208   gtk_binding_entry_add_signal (binding_set, GDK_KEY_Right, GDK_SHIFT_MASK,
1209                                 "expand-collapse-cursor-row", 3,
1210                                 G_TYPE_BOOLEAN, FALSE,
1211                                 G_TYPE_BOOLEAN, TRUE,
1212                                 G_TYPE_BOOLEAN, TRUE);
1213   gtk_binding_entry_add_signal (binding_set, GDK_KEY_KP_Right, GDK_SHIFT_MASK,
1214                                 "expand-collapse-cursor-row", 3,
1215                                 G_TYPE_BOOLEAN, FALSE,
1216                                 G_TYPE_BOOLEAN, TRUE,
1217                                 G_TYPE_BOOLEAN, TRUE);
1218   gtk_binding_entry_add_signal (binding_set, GDK_KEY_Right,
1219                                 GDK_CONTROL_MASK | GDK_SHIFT_MASK,
1220                                 "expand-collapse-cursor-row", 3,
1221                                 G_TYPE_BOOLEAN, FALSE,
1222                                 G_TYPE_BOOLEAN, TRUE,
1223                                 G_TYPE_BOOLEAN, TRUE);
1224   gtk_binding_entry_add_signal (binding_set, GDK_KEY_KP_Right,
1225                                 GDK_CONTROL_MASK | GDK_SHIFT_MASK,
1226                                 "expand-collapse-cursor-row", 3,
1227                                 G_TYPE_BOOLEAN, FALSE,
1228                                 G_TYPE_BOOLEAN, TRUE,
1229                                 G_TYPE_BOOLEAN, TRUE);
1230
1231   gtk_binding_entry_add_signal (binding_set, GDK_KEY_minus, 0, "expand-collapse-cursor-row", 3,
1232                                 G_TYPE_BOOLEAN, TRUE,
1233                                 G_TYPE_BOOLEAN, FALSE,
1234                                 G_TYPE_BOOLEAN, FALSE);
1235   gtk_binding_entry_add_signal (binding_set, GDK_KEY_minus, GDK_SHIFT_MASK, "expand-collapse-cursor-row", 3,
1236                                 G_TYPE_BOOLEAN, TRUE,
1237                                 G_TYPE_BOOLEAN, FALSE,
1238                                 G_TYPE_BOOLEAN, TRUE);
1239   gtk_binding_entry_add_signal (binding_set, GDK_KEY_KP_Subtract, 0, "expand-collapse-cursor-row", 3,
1240                                 G_TYPE_BOOLEAN, TRUE,
1241                                 G_TYPE_BOOLEAN, FALSE,
1242                                 G_TYPE_BOOLEAN, FALSE);
1243   gtk_binding_entry_add_signal (binding_set, GDK_KEY_KP_Subtract, GDK_SHIFT_MASK, "expand-collapse-cursor-row", 3,
1244                                 G_TYPE_BOOLEAN, TRUE,
1245                                 G_TYPE_BOOLEAN, FALSE,
1246                                 G_TYPE_BOOLEAN, TRUE);
1247   gtk_binding_entry_add_signal (binding_set, GDK_KEY_Left, GDK_SHIFT_MASK,
1248                                 "expand-collapse-cursor-row", 3,
1249                                 G_TYPE_BOOLEAN, FALSE,
1250                                 G_TYPE_BOOLEAN, FALSE,
1251                                 G_TYPE_BOOLEAN, TRUE);
1252   gtk_binding_entry_add_signal (binding_set, GDK_KEY_KP_Left, GDK_SHIFT_MASK,
1253                                 "expand-collapse-cursor-row", 3,
1254                                 G_TYPE_BOOLEAN, FALSE,
1255                                 G_TYPE_BOOLEAN, FALSE,
1256                                 G_TYPE_BOOLEAN, TRUE);
1257   gtk_binding_entry_add_signal (binding_set, GDK_KEY_Left,
1258                                 GDK_CONTROL_MASK | GDK_SHIFT_MASK,
1259                                 "expand-collapse-cursor-row", 3,
1260                                 G_TYPE_BOOLEAN, FALSE,
1261                                 G_TYPE_BOOLEAN, FALSE,
1262                                 G_TYPE_BOOLEAN, TRUE);
1263   gtk_binding_entry_add_signal (binding_set, GDK_KEY_KP_Left,
1264                                 GDK_CONTROL_MASK | GDK_SHIFT_MASK,
1265                                 "expand-collapse-cursor-row", 3,
1266                                 G_TYPE_BOOLEAN, FALSE,
1267                                 G_TYPE_BOOLEAN, FALSE,
1268                                 G_TYPE_BOOLEAN, TRUE);
1269
1270   gtk_binding_entry_add_signal (binding_set, GDK_KEY_BackSpace, 0, "select-cursor-parent", 0);
1271   gtk_binding_entry_add_signal (binding_set, GDK_KEY_BackSpace, GDK_CONTROL_MASK, "select-cursor-parent", 0);
1272
1273   gtk_binding_entry_add_signal (binding_set, GDK_KEY_f, GDK_CONTROL_MASK, "start-interactive-search", 0);
1274
1275   gtk_binding_entry_add_signal (binding_set, GDK_KEY_F, GDK_CONTROL_MASK, "start-interactive-search", 0);
1276
1277   g_type_class_add_private (o_class, sizeof (GtkTreeViewPrivate));
1278 }
1279
1280 static void
1281 gtk_tree_view_init (GtkTreeView *tree_view)
1282 {
1283   tree_view->priv = G_TYPE_INSTANCE_GET_PRIVATE (tree_view, GTK_TYPE_TREE_VIEW, GtkTreeViewPrivate);
1284
1285   gtk_widget_set_can_focus (GTK_WIDGET (tree_view), TRUE);
1286   gtk_widget_set_redraw_on_allocate (GTK_WIDGET (tree_view), FALSE);
1287
1288   tree_view->priv->flags =  GTK_TREE_VIEW_SHOW_EXPANDERS
1289                             | GTK_TREE_VIEW_DRAW_KEYFOCUS
1290                             | GTK_TREE_VIEW_HEADERS_VISIBLE;
1291
1292   /* We need some padding */
1293   tree_view->priv->dy = 0;
1294   tree_view->priv->cursor_offset = 0;
1295   tree_view->priv->n_columns = 0;
1296   tree_view->priv->header_height = 1;
1297   tree_view->priv->x_drag = 0;
1298   tree_view->priv->drag_pos = -1;
1299   tree_view->priv->header_has_focus = FALSE;
1300   tree_view->priv->pressed_button = -1;
1301   tree_view->priv->press_start_x = -1;
1302   tree_view->priv->press_start_y = -1;
1303   tree_view->priv->reorderable = FALSE;
1304   tree_view->priv->presize_handler_timer = 0;
1305   tree_view->priv->scroll_sync_timer = 0;
1306   tree_view->priv->fixed_height = -1;
1307   tree_view->priv->fixed_height_mode = FALSE;
1308   tree_view->priv->fixed_height_check = 0;
1309   tree_view->priv->selection = _gtk_tree_selection_new_with_tree_view (tree_view);
1310   tree_view->priv->enable_search = TRUE;
1311   tree_view->priv->search_column = -1;
1312   tree_view->priv->search_position_func = gtk_tree_view_search_position_func;
1313   tree_view->priv->search_equal_func = gtk_tree_view_search_equal_func;
1314   tree_view->priv->search_custom_entry_set = FALSE;
1315   tree_view->priv->typeselect_flush_timeout = 0;
1316   tree_view->priv->init_hadjust_value = TRUE;
1317   tree_view->priv->width = 0;
1318
1319   tree_view->priv->hover_selection = FALSE;
1320   tree_view->priv->hover_expand = FALSE;
1321
1322   tree_view->priv->level_indentation = 0;
1323
1324   tree_view->priv->rubber_banding_enable = FALSE;
1325
1326   tree_view->priv->grid_lines = GTK_TREE_VIEW_GRID_LINES_NONE;
1327   tree_view->priv->tree_lines_enabled = FALSE;
1328
1329   tree_view->priv->tooltip_column = -1;
1330
1331   tree_view->priv->post_validation_flag = FALSE;
1332
1333   tree_view->priv->last_button_x = -1;
1334   tree_view->priv->last_button_y = -1;
1335
1336   tree_view->priv->event_last_x = -10000;
1337   tree_view->priv->event_last_y = -10000;
1338 }
1339
1340 \f
1341
1342 /* GObject Methods
1343  */
1344
1345 static void
1346 gtk_tree_view_set_property (GObject         *object,
1347                             guint            prop_id,
1348                             const GValue    *value,
1349                             GParamSpec      *pspec)
1350 {
1351   GtkTreeView *tree_view;
1352
1353   tree_view = GTK_TREE_VIEW (object);
1354
1355   switch (prop_id)
1356     {
1357     case PROP_MODEL:
1358       gtk_tree_view_set_model (tree_view, g_value_get_object (value));
1359       break;
1360     case PROP_HADJUSTMENT:
1361       gtk_tree_view_set_hadjustment (tree_view, g_value_get_object (value));
1362       break;
1363     case PROP_VADJUSTMENT:
1364       gtk_tree_view_set_vadjustment (tree_view, g_value_get_object (value));
1365       break;
1366     case PROP_HEADERS_VISIBLE:
1367       gtk_tree_view_set_headers_visible (tree_view, g_value_get_boolean (value));
1368       break;
1369     case PROP_HEADERS_CLICKABLE:
1370       gtk_tree_view_set_headers_clickable (tree_view, g_value_get_boolean (value));
1371       break;
1372     case PROP_EXPANDER_COLUMN:
1373       gtk_tree_view_set_expander_column (tree_view, g_value_get_object (value));
1374       break;
1375     case PROP_REORDERABLE:
1376       gtk_tree_view_set_reorderable (tree_view, g_value_get_boolean (value));
1377       break;
1378     case PROP_RULES_HINT:
1379       gtk_tree_view_set_rules_hint (tree_view, g_value_get_boolean (value));
1380       break;
1381     case PROP_ENABLE_SEARCH:
1382       gtk_tree_view_set_enable_search (tree_view, g_value_get_boolean (value));
1383       break;
1384     case PROP_SEARCH_COLUMN:
1385       gtk_tree_view_set_search_column (tree_view, g_value_get_int (value));
1386       break;
1387     case PROP_FIXED_HEIGHT_MODE:
1388       gtk_tree_view_set_fixed_height_mode (tree_view, g_value_get_boolean (value));
1389       break;
1390     case PROP_HOVER_SELECTION:
1391       tree_view->priv->hover_selection = g_value_get_boolean (value);
1392       break;
1393     case PROP_HOVER_EXPAND:
1394       tree_view->priv->hover_expand = g_value_get_boolean (value);
1395       break;
1396     case PROP_SHOW_EXPANDERS:
1397       gtk_tree_view_set_show_expanders (tree_view, g_value_get_boolean (value));
1398       break;
1399     case PROP_LEVEL_INDENTATION:
1400       tree_view->priv->level_indentation = g_value_get_int (value);
1401       break;
1402     case PROP_RUBBER_BANDING:
1403       tree_view->priv->rubber_banding_enable = g_value_get_boolean (value);
1404       break;
1405     case PROP_ENABLE_GRID_LINES:
1406       gtk_tree_view_set_grid_lines (tree_view, g_value_get_enum (value));
1407       break;
1408     case PROP_ENABLE_TREE_LINES:
1409       gtk_tree_view_set_enable_tree_lines (tree_view, g_value_get_boolean (value));
1410       break;
1411     case PROP_TOOLTIP_COLUMN:
1412       gtk_tree_view_set_tooltip_column (tree_view, g_value_get_int (value));
1413       break;
1414     default:
1415       G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
1416       break;
1417     }
1418 }
1419
1420 static void
1421 gtk_tree_view_get_property (GObject    *object,
1422                             guint       prop_id,
1423                             GValue     *value,
1424                             GParamSpec *pspec)
1425 {
1426   GtkTreeView *tree_view;
1427
1428   tree_view = GTK_TREE_VIEW (object);
1429
1430   switch (prop_id)
1431     {
1432     case PROP_MODEL:
1433       g_value_set_object (value, tree_view->priv->model);
1434       break;
1435     case PROP_HADJUSTMENT:
1436       g_value_set_object (value, tree_view->priv->hadjustment);
1437       break;
1438     case PROP_VADJUSTMENT:
1439       g_value_set_object (value, tree_view->priv->vadjustment);
1440       break;
1441     case PROP_HEADERS_VISIBLE:
1442       g_value_set_boolean (value, gtk_tree_view_get_headers_visible (tree_view));
1443       break;
1444     case PROP_HEADERS_CLICKABLE:
1445       g_value_set_boolean (value, gtk_tree_view_get_headers_clickable (tree_view));
1446       break;
1447     case PROP_EXPANDER_COLUMN:
1448       g_value_set_object (value, tree_view->priv->expander_column);
1449       break;
1450     case PROP_REORDERABLE:
1451       g_value_set_boolean (value, tree_view->priv->reorderable);
1452       break;
1453     case PROP_RULES_HINT:
1454       g_value_set_boolean (value, tree_view->priv->has_rules);
1455       break;
1456     case PROP_ENABLE_SEARCH:
1457       g_value_set_boolean (value, tree_view->priv->enable_search);
1458       break;
1459     case PROP_SEARCH_COLUMN:
1460       g_value_set_int (value, tree_view->priv->search_column);
1461       break;
1462     case PROP_FIXED_HEIGHT_MODE:
1463       g_value_set_boolean (value, tree_view->priv->fixed_height_mode);
1464       break;
1465     case PROP_HOVER_SELECTION:
1466       g_value_set_boolean (value, tree_view->priv->hover_selection);
1467       break;
1468     case PROP_HOVER_EXPAND:
1469       g_value_set_boolean (value, tree_view->priv->hover_expand);
1470       break;
1471     case PROP_SHOW_EXPANDERS:
1472       g_value_set_boolean (value, GTK_TREE_VIEW_FLAG_SET (tree_view, GTK_TREE_VIEW_SHOW_EXPANDERS));
1473       break;
1474     case PROP_LEVEL_INDENTATION:
1475       g_value_set_int (value, tree_view->priv->level_indentation);
1476       break;
1477     case PROP_RUBBER_BANDING:
1478       g_value_set_boolean (value, tree_view->priv->rubber_banding_enable);
1479       break;
1480     case PROP_ENABLE_GRID_LINES:
1481       g_value_set_enum (value, tree_view->priv->grid_lines);
1482       break;
1483     case PROP_ENABLE_TREE_LINES:
1484       g_value_set_boolean (value, tree_view->priv->tree_lines_enabled);
1485       break;
1486     case PROP_TOOLTIP_COLUMN:
1487       g_value_set_int (value, tree_view->priv->tooltip_column);
1488       break;
1489     default:
1490       G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
1491       break;
1492     }
1493 }
1494
1495 static void
1496 gtk_tree_view_finalize (GObject *object)
1497 {
1498   G_OBJECT_CLASS (gtk_tree_view_parent_class)->finalize (object);
1499 }
1500
1501
1502 static GtkBuildableIface *parent_buildable_iface;
1503
1504 static void
1505 gtk_tree_view_buildable_init (GtkBuildableIface *iface)
1506 {
1507   parent_buildable_iface = g_type_interface_peek_parent (iface);
1508   iface->add_child = gtk_tree_view_buildable_add_child;
1509   iface->get_internal_child = gtk_tree_view_buildable_get_internal_child;
1510 }
1511
1512 static void
1513 gtk_tree_view_buildable_add_child (GtkBuildable *tree_view,
1514                                    GtkBuilder  *builder,
1515                                    GObject     *child,
1516                                    const gchar *type)
1517 {
1518   gtk_tree_view_append_column (GTK_TREE_VIEW (tree_view), GTK_TREE_VIEW_COLUMN (child));
1519 }
1520
1521 static GObject *
1522 gtk_tree_view_buildable_get_internal_child (GtkBuildable      *buildable,
1523                                             GtkBuilder        *builder,
1524                                             const gchar       *childname)
1525 {
1526     if (strcmp (childname, "selection") == 0)
1527       return G_OBJECT (GTK_TREE_VIEW (buildable)->priv->selection);
1528
1529     return parent_buildable_iface->get_internal_child (buildable,
1530                                                        builder,
1531                                                        childname);
1532 }
1533
1534 /* GtkWidget Methods
1535  */
1536
1537 static void
1538 gtk_tree_view_free_rbtree (GtkTreeView *tree_view)
1539 {
1540   _gtk_rbtree_free (tree_view->priv->tree);
1541
1542   tree_view->priv->tree = NULL;
1543   tree_view->priv->button_pressed_node = NULL;
1544   tree_view->priv->button_pressed_tree = NULL;
1545   tree_view->priv->prelight_tree = NULL;
1546   tree_view->priv->prelight_node = NULL;
1547   tree_view->priv->expanded_collapsed_node = NULL;
1548   tree_view->priv->expanded_collapsed_tree = NULL;
1549 }
1550
1551 static void
1552 gtk_tree_view_destroy (GtkWidget *widget)
1553 {
1554   GtkTreeView *tree_view = GTK_TREE_VIEW (widget);
1555   GList *list;
1556
1557   gtk_tree_view_stop_editing (tree_view, TRUE);
1558
1559   if (tree_view->priv->columns != NULL)
1560     {
1561       list = tree_view->priv->columns;
1562       while (list)
1563         {
1564           GtkTreeViewColumn *column;
1565           column = GTK_TREE_VIEW_COLUMN (list->data);
1566           list = list->next;
1567           gtk_tree_view_remove_column (tree_view, column);
1568         }
1569       tree_view->priv->columns = NULL;
1570     }
1571
1572   if (tree_view->priv->tree != NULL)
1573     {
1574       gtk_tree_view_unref_and_check_selection_tree (tree_view, tree_view->priv->tree);
1575
1576       gtk_tree_view_free_rbtree (tree_view);
1577     }
1578
1579   if (tree_view->priv->selection != NULL)
1580     {
1581       _gtk_tree_selection_set_tree_view (tree_view->priv->selection, NULL);
1582       g_object_unref (tree_view->priv->selection);
1583       tree_view->priv->selection = NULL;
1584     }
1585
1586   if (tree_view->priv->scroll_to_path != NULL)
1587     {
1588       gtk_tree_row_reference_free (tree_view->priv->scroll_to_path);
1589       tree_view->priv->scroll_to_path = NULL;
1590     }
1591
1592   if (tree_view->priv->drag_dest_row != NULL)
1593     {
1594       gtk_tree_row_reference_free (tree_view->priv->drag_dest_row);
1595       tree_view->priv->drag_dest_row = NULL;
1596     }
1597
1598   if (tree_view->priv->top_row != NULL)
1599     {
1600       gtk_tree_row_reference_free (tree_view->priv->top_row);
1601       tree_view->priv->top_row = NULL;
1602     }
1603
1604   if (tree_view->priv->column_drop_func_data &&
1605       tree_view->priv->column_drop_func_data_destroy)
1606     {
1607       tree_view->priv->column_drop_func_data_destroy (tree_view->priv->column_drop_func_data);
1608       tree_view->priv->column_drop_func_data = NULL;
1609     }
1610
1611   if (tree_view->priv->destroy_count_destroy &&
1612       tree_view->priv->destroy_count_data)
1613     {
1614       tree_view->priv->destroy_count_destroy (tree_view->priv->destroy_count_data);
1615       tree_view->priv->destroy_count_data = NULL;
1616     }
1617
1618   gtk_tree_row_reference_free (tree_view->priv->cursor);
1619   tree_view->priv->cursor = NULL;
1620
1621   gtk_tree_row_reference_free (tree_view->priv->anchor);
1622   tree_view->priv->anchor = NULL;
1623
1624   /* destroy interactive search dialog */
1625   if (tree_view->priv->search_window)
1626     {
1627       gtk_widget_destroy (tree_view->priv->search_window);
1628       tree_view->priv->search_window = NULL;
1629       tree_view->priv->search_entry = NULL;
1630       if (tree_view->priv->typeselect_flush_timeout)
1631         {
1632           g_source_remove (tree_view->priv->typeselect_flush_timeout);
1633           tree_view->priv->typeselect_flush_timeout = 0;
1634         }
1635     }
1636
1637   if (tree_view->priv->search_destroy && tree_view->priv->search_user_data)
1638     {
1639       tree_view->priv->search_destroy (tree_view->priv->search_user_data);
1640       tree_view->priv->search_user_data = NULL;
1641     }
1642
1643   if (tree_view->priv->search_position_destroy && tree_view->priv->search_position_user_data)
1644     {
1645       tree_view->priv->search_position_destroy (tree_view->priv->search_position_user_data);
1646       tree_view->priv->search_position_user_data = NULL;
1647     }
1648
1649   if (tree_view->priv->row_separator_destroy && tree_view->priv->row_separator_data)
1650     {
1651       tree_view->priv->row_separator_destroy (tree_view->priv->row_separator_data);
1652       tree_view->priv->row_separator_data = NULL;
1653     }
1654
1655   gtk_tree_view_set_model (tree_view, NULL);
1656
1657   if (tree_view->priv->hadjustment)
1658     {
1659       g_object_unref (tree_view->priv->hadjustment);
1660       tree_view->priv->hadjustment = NULL;
1661     }
1662   if (tree_view->priv->vadjustment)
1663     {
1664       g_object_unref (tree_view->priv->vadjustment);
1665       tree_view->priv->vadjustment = NULL;
1666     }
1667
1668   GTK_WIDGET_CLASS (gtk_tree_view_parent_class)->destroy (widget);
1669 }
1670
1671 /* GtkWidget::map helper */
1672 static void
1673 gtk_tree_view_map_buttons (GtkTreeView *tree_view)
1674 {
1675   GList *list;
1676
1677   g_return_if_fail (gtk_widget_get_mapped (GTK_WIDGET (tree_view)));
1678
1679   if (GTK_TREE_VIEW_FLAG_SET (tree_view, GTK_TREE_VIEW_HEADERS_VISIBLE))
1680     {
1681       GtkTreeViewColumn *column;
1682
1683       for (list = tree_view->priv->columns; list; list = list->next)
1684         {
1685           column = list->data;
1686           if (gtk_widget_get_visible (column->button) &&
1687               !gtk_widget_get_mapped (column->button))
1688             gtk_widget_map (column->button);
1689         }
1690       for (list = tree_view->priv->columns; list; list = list->next)
1691         {
1692           column = list->data;
1693           if (column->visible == FALSE)
1694             continue;
1695           if (column->resizable)
1696             {
1697               gdk_window_raise (column->window);
1698               gdk_window_show (column->window);
1699             }
1700           else
1701             gdk_window_hide (column->window);
1702         }
1703       gdk_window_show (tree_view->priv->header_window);
1704     }
1705 }
1706
1707 static void
1708 gtk_tree_view_map (GtkWidget *widget)
1709 {
1710   GtkTreeView *tree_view = GTK_TREE_VIEW (widget);
1711   GList *tmp_list;
1712
1713   gtk_widget_set_mapped (widget, TRUE);
1714
1715   tmp_list = tree_view->priv->children;
1716   while (tmp_list)
1717     {
1718       GtkTreeViewChild *child = tmp_list->data;
1719       tmp_list = tmp_list->next;
1720
1721       if (gtk_widget_get_visible (child->widget))
1722         {
1723           if (!gtk_widget_get_mapped (child->widget))
1724             gtk_widget_map (child->widget);
1725         }
1726     }
1727   gdk_window_show (tree_view->priv->bin_window);
1728
1729   gtk_tree_view_map_buttons (tree_view);
1730
1731   gdk_window_show (gtk_widget_get_window (widget));
1732 }
1733
1734 static void
1735 gtk_tree_view_realize (GtkWidget *widget)
1736 {
1737   GtkAllocation allocation;
1738   GtkStyle *style;
1739   GtkTreeView *tree_view = GTK_TREE_VIEW (widget);
1740   GdkWindow *window;
1741   GdkWindowAttr attributes;
1742   GList *tmp_list;
1743   gint attributes_mask;
1744
1745   gtk_widget_set_realized (widget, TRUE);
1746
1747   gtk_widget_get_allocation (widget, &allocation);
1748
1749   /* Make the main, clipping window */
1750   attributes.window_type = GDK_WINDOW_CHILD;
1751   attributes.x = allocation.x;
1752   attributes.y = allocation.y;
1753   attributes.width = allocation.width;
1754   attributes.height = allocation.height;
1755   attributes.wclass = GDK_INPUT_OUTPUT;
1756   attributes.visual = gtk_widget_get_visual (widget);
1757   attributes.event_mask = GDK_VISIBILITY_NOTIFY_MASK;
1758
1759   attributes_mask = GDK_WA_X | GDK_WA_Y | GDK_WA_VISUAL;
1760
1761   window = gdk_window_new (gtk_widget_get_parent_window (widget),
1762                            &attributes, attributes_mask);
1763   gtk_widget_set_window (widget, window);
1764   gdk_window_set_user_data (window, widget);
1765
1766   gtk_widget_get_allocation (widget, &allocation);
1767
1768   /* Make the window for the tree */
1769   attributes.x = 0;
1770   attributes.y = TREE_VIEW_HEADER_HEIGHT (tree_view);
1771   attributes.width = MAX (tree_view->priv->width, allocation.width);
1772   attributes.height = allocation.height;
1773   attributes.event_mask = (GDK_EXPOSURE_MASK |
1774                            GDK_SCROLL_MASK |
1775                            GDK_POINTER_MOTION_MASK |
1776                            GDK_ENTER_NOTIFY_MASK |
1777                            GDK_LEAVE_NOTIFY_MASK |
1778                            GDK_BUTTON_PRESS_MASK |
1779                            GDK_BUTTON_RELEASE_MASK |
1780                            gtk_widget_get_events (widget));
1781
1782   tree_view->priv->bin_window = gdk_window_new (window,
1783                                                 &attributes, attributes_mask);
1784   gdk_window_set_user_data (tree_view->priv->bin_window, widget);
1785
1786   gtk_widget_get_allocation (widget, &allocation);
1787
1788   /* Make the column header window */
1789   attributes.x = 0;
1790   attributes.y = 0;
1791   attributes.width = MAX (tree_view->priv->width, allocation.width);
1792   attributes.height = tree_view->priv->header_height;
1793   attributes.event_mask = (GDK_EXPOSURE_MASK |
1794                            GDK_SCROLL_MASK |
1795                            GDK_ENTER_NOTIFY_MASK |
1796                            GDK_LEAVE_NOTIFY_MASK |
1797                            GDK_BUTTON_PRESS_MASK |
1798                            GDK_BUTTON_RELEASE_MASK |
1799                            GDK_KEY_PRESS_MASK |
1800                            GDK_KEY_RELEASE_MASK |
1801                            gtk_widget_get_events (widget));
1802
1803   tree_view->priv->header_window = gdk_window_new (window,
1804                                                    &attributes, attributes_mask);
1805   gdk_window_set_user_data (tree_view->priv->header_window, widget);
1806
1807   /* Add them all up. */
1808   gtk_widget_style_attach (widget);
1809   style = gtk_widget_get_style (widget);
1810   gdk_window_set_background (tree_view->priv->bin_window,
1811                              &style->base[gtk_widget_get_state (widget)]);
1812   gtk_style_set_background (style, tree_view->priv->header_window, GTK_STATE_NORMAL);
1813
1814   tmp_list = tree_view->priv->children;
1815   while (tmp_list)
1816     {
1817       GtkTreeViewChild *child = tmp_list->data;
1818       tmp_list = tmp_list->next;
1819
1820       gtk_widget_set_parent_window (child->widget, tree_view->priv->bin_window);
1821     }
1822
1823   for (tmp_list = tree_view->priv->columns; tmp_list; tmp_list = tmp_list->next)
1824     _gtk_tree_view_column_realize_button (GTK_TREE_VIEW_COLUMN (tmp_list->data));
1825
1826   /* Need to call those here, since they create GCs */
1827   gtk_tree_view_set_grid_lines (tree_view, tree_view->priv->grid_lines);
1828   gtk_tree_view_set_enable_tree_lines (tree_view, tree_view->priv->tree_lines_enabled);
1829
1830   install_presize_handler (tree_view);
1831 }
1832
1833 static void
1834 gtk_tree_view_unrealize (GtkWidget *widget)
1835 {
1836   GtkTreeView *tree_view = GTK_TREE_VIEW (widget);
1837   GtkTreeViewPrivate *priv = tree_view->priv;
1838   GList *list;
1839
1840   if (priv->scroll_timeout != 0)
1841     {
1842       g_source_remove (priv->scroll_timeout);
1843       priv->scroll_timeout = 0;
1844     }
1845
1846   if (priv->auto_expand_timeout != 0)
1847     {
1848       g_source_remove (priv->auto_expand_timeout);
1849       priv->auto_expand_timeout = 0;
1850     }
1851
1852   if (priv->open_dest_timeout != 0)
1853     {
1854       g_source_remove (priv->open_dest_timeout);
1855       priv->open_dest_timeout = 0;
1856     }
1857
1858   remove_expand_collapse_timeout (tree_view);
1859
1860   if (priv->presize_handler_timer != 0)
1861     {
1862       g_source_remove (priv->presize_handler_timer);
1863       priv->presize_handler_timer = 0;
1864     }
1865
1866   if (priv->validate_rows_timer != 0)
1867     {
1868       g_source_remove (priv->validate_rows_timer);
1869       priv->validate_rows_timer = 0;
1870     }
1871
1872   if (priv->scroll_sync_timer != 0)
1873     {
1874       g_source_remove (priv->scroll_sync_timer);
1875       priv->scroll_sync_timer = 0;
1876     }
1877
1878   if (priv->typeselect_flush_timeout)
1879     {
1880       g_source_remove (priv->typeselect_flush_timeout);
1881       priv->typeselect_flush_timeout = 0;
1882     }
1883
1884   for (list = priv->columns; list; list = list->next)
1885     _gtk_tree_view_column_unrealize_button (GTK_TREE_VIEW_COLUMN (list->data));
1886
1887   gdk_window_set_user_data (priv->bin_window, NULL);
1888   gdk_window_destroy (priv->bin_window);
1889   priv->bin_window = NULL;
1890
1891   gdk_window_set_user_data (priv->header_window, NULL);
1892   gdk_window_destroy (priv->header_window);
1893   priv->header_window = NULL;
1894
1895   if (priv->drag_window)
1896     {
1897       gdk_window_set_user_data (priv->drag_window, NULL);
1898       gdk_window_destroy (priv->drag_window);
1899       priv->drag_window = NULL;
1900     }
1901
1902   if (priv->drag_highlight_window)
1903     {
1904       gdk_window_set_user_data (priv->drag_highlight_window, NULL);
1905       gdk_window_destroy (priv->drag_highlight_window);
1906       priv->drag_highlight_window = NULL;
1907     }
1908
1909   GTK_WIDGET_CLASS (gtk_tree_view_parent_class)->unrealize (widget);
1910 }
1911
1912 /* GtkWidget::size_request helper */
1913 static void
1914 gtk_tree_view_size_request_columns (GtkTreeView *tree_view)
1915 {
1916   GList *list;
1917
1918   tree_view->priv->header_height = 0;
1919
1920   if (tree_view->priv->model)
1921     {
1922       for (list = tree_view->priv->columns; list; list = list->next)
1923         {
1924           GtkRequisition requisition;
1925           GtkTreeViewColumn *column = list->data;
1926
1927           if (column->button == NULL)
1928             continue;
1929
1930           column = list->data;
1931
1932           gtk_widget_get_preferred_size (column->button, &requisition, NULL);
1933           column->button_request = requisition.width;
1934           tree_view->priv->header_height = MAX (tree_view->priv->header_height, requisition.height);
1935         }
1936     }
1937 }
1938
1939
1940 /* Called only by ::size_request */
1941 static void
1942 gtk_tree_view_update_size (GtkTreeView *tree_view)
1943 {
1944   GList *list;
1945   GtkTreeViewColumn *column;
1946   gint i;
1947
1948   if (tree_view->priv->model == NULL)
1949     {
1950       tree_view->priv->width = 0;
1951       tree_view->priv->prev_width = 0;
1952       tree_view->priv->height = 0;
1953       return;
1954     }
1955
1956   tree_view->priv->prev_width = tree_view->priv->width;
1957   tree_view->priv->width = 0;
1958
1959   /* keep this in sync with size_allocate below */
1960   for (list = tree_view->priv->columns, i = 0; list; list = list->next, i++)
1961     {
1962       gint real_requested_width = 0;
1963       column = list->data;
1964       if (!column->visible)
1965         continue;
1966
1967       if (column->use_resized_width)
1968         {
1969           real_requested_width = column->resized_width;
1970         }
1971       else if (column->column_type == GTK_TREE_VIEW_COLUMN_FIXED)
1972         {
1973           real_requested_width = column->fixed_width;
1974         }
1975       else if (GTK_TREE_VIEW_FLAG_SET (tree_view, GTK_TREE_VIEW_HEADERS_VISIBLE))
1976         {
1977           real_requested_width = MAX (column->requested_width, column->button_request);
1978         }
1979       else
1980         {
1981           real_requested_width = column->requested_width;
1982         }
1983
1984       if (column->min_width != -1)
1985         real_requested_width = MAX (real_requested_width, column->min_width);
1986       if (column->max_width != -1)
1987         real_requested_width = MIN (real_requested_width, column->max_width);
1988
1989       tree_view->priv->width += real_requested_width;
1990     }
1991
1992   if (tree_view->priv->tree == NULL)
1993     tree_view->priv->height = 0;
1994   else
1995     tree_view->priv->height = tree_view->priv->tree->root->offset;
1996 }
1997
1998 static void
1999 gtk_tree_view_size_request (GtkWidget      *widget,
2000                             GtkRequisition *requisition)
2001 {
2002   GtkTreeView *tree_view = GTK_TREE_VIEW (widget);
2003   GList *tmp_list;
2004
2005   /* we validate some rows initially just to make sure we have some size.
2006    * In practice, with a lot of static lists, this should get a good width.
2007    */
2008   do_validate_rows (tree_view, FALSE);
2009   gtk_tree_view_size_request_columns (tree_view);
2010   gtk_tree_view_update_size (GTK_TREE_VIEW (widget));
2011
2012   requisition->width = tree_view->priv->width;
2013   requisition->height = tree_view->priv->height + TREE_VIEW_HEADER_HEIGHT (tree_view);
2014
2015   tmp_list = tree_view->priv->children;
2016
2017   while (tmp_list)
2018     {
2019       GtkTreeViewChild *child = tmp_list->data;
2020       GtkRequisition child_requisition;
2021
2022       tmp_list = tmp_list->next;
2023
2024       if (gtk_widget_get_visible (child->widget))
2025         gtk_widget_get_preferred_size (child->widget, &child_requisition, NULL);
2026     }
2027 }
2028
2029 static int
2030 gtk_tree_view_calculate_width_before_expander (GtkTreeView *tree_view)
2031 {
2032   int width = 0;
2033   GList *list;
2034   gboolean rtl;
2035
2036   rtl = (gtk_widget_get_direction (GTK_WIDGET (tree_view)) == GTK_TEXT_DIR_RTL);
2037   for (list = (rtl ? g_list_last (tree_view->priv->columns) : g_list_first (tree_view->priv->columns));
2038        list->data != tree_view->priv->expander_column;
2039        list = (rtl ? list->prev : list->next))
2040     {
2041       GtkTreeViewColumn *column = list->data;
2042
2043       width += column->width;
2044     }
2045
2046   return width;
2047 }
2048
2049 static void
2050 invalidate_column (GtkTreeView       *tree_view,
2051                    GtkTreeViewColumn *column)
2052 {
2053   gint column_offset = 0;
2054   GList *list;
2055   GtkWidget *widget = GTK_WIDGET (tree_view);
2056   gboolean rtl;
2057
2058   if (!gtk_widget_get_realized (widget))
2059     return;
2060
2061   rtl = (gtk_widget_get_direction (GTK_WIDGET (tree_view)) == GTK_TEXT_DIR_RTL);
2062   for (list = (rtl ? g_list_last (tree_view->priv->columns) : g_list_first (tree_view->priv->columns));
2063        list;
2064        list = (rtl ? list->prev : list->next))
2065     {
2066       GtkTreeViewColumn *tmpcolumn = list->data;
2067       if (tmpcolumn == column)
2068         {
2069           GtkAllocation allocation;
2070           GdkRectangle invalid_rect;
2071
2072           gtk_widget_get_allocation (widget, &allocation);
2073           invalid_rect.x = column_offset;
2074           invalid_rect.y = 0;
2075           invalid_rect.width = column->width;
2076           invalid_rect.height = allocation.height;
2077
2078           gdk_window_invalidate_rect (gtk_widget_get_window (widget), &invalid_rect, TRUE);
2079           break;
2080         }
2081
2082       column_offset += tmpcolumn->width;
2083     }
2084 }
2085
2086 static void
2087 invalidate_last_column (GtkTreeView *tree_view)
2088 {
2089   GList *last_column;
2090   gboolean rtl;
2091
2092   rtl = (gtk_widget_get_direction (GTK_WIDGET (tree_view)) == GTK_TEXT_DIR_RTL);
2093
2094   for (last_column = (rtl ? g_list_first (tree_view->priv->columns) : g_list_last (tree_view->priv->columns));
2095        last_column;
2096        last_column = (rtl ? last_column->next : last_column->prev))
2097     {
2098       if (GTK_TREE_VIEW_COLUMN (last_column->data)->visible)
2099         {
2100           invalidate_column (tree_view, last_column->data);
2101           return;
2102         }
2103     }
2104 }
2105
2106 static gint
2107 gtk_tree_view_get_real_requested_width_from_column (GtkTreeView       *tree_view,
2108                                                     GtkTreeViewColumn *column)
2109 {
2110   gint real_requested_width;
2111
2112   if (column->use_resized_width)
2113     {
2114       real_requested_width = column->resized_width;
2115     }
2116   else if (column->column_type == GTK_TREE_VIEW_COLUMN_FIXED)
2117     {
2118       real_requested_width = column->fixed_width;
2119     }
2120   else if (GTK_TREE_VIEW_FLAG_SET (tree_view, GTK_TREE_VIEW_HEADERS_VISIBLE))
2121     {
2122       real_requested_width = MAX (column->requested_width, column->button_request);
2123     }
2124   else
2125     {
2126       real_requested_width = column->requested_width;
2127       if (real_requested_width < 0)
2128         real_requested_width = 0;
2129     }
2130
2131   if (column->min_width != -1)
2132     real_requested_width = MAX (real_requested_width, column->min_width);
2133   if (column->max_width != -1)
2134     real_requested_width = MIN (real_requested_width, column->max_width);
2135
2136   return real_requested_width;
2137 }
2138
2139 /* GtkWidget::size_allocate helper */
2140 static void
2141 gtk_tree_view_size_allocate_columns (GtkWidget *widget,
2142                                      gboolean  *width_changed)
2143 {
2144   GtkTreeView *tree_view;
2145   GList *list, *first_column, *last_column;
2146   GtkTreeViewColumn *column;
2147   GtkAllocation allocation;
2148   GtkAllocation widget_allocation;
2149   gint width = 0;
2150   gint extra, extra_per_column, extra_for_last;
2151   gint full_requested_width = 0;
2152   gint number_of_expand_columns = 0;
2153   gboolean column_changed = FALSE;
2154   gboolean rtl;
2155   gboolean update_expand;
2156
2157   tree_view = GTK_TREE_VIEW (widget);
2158
2159   for (last_column = g_list_last (tree_view->priv->columns);
2160        last_column && !(GTK_TREE_VIEW_COLUMN (last_column->data)->visible);
2161        last_column = last_column->prev)
2162     ;
2163   if (last_column == NULL)
2164     return;
2165
2166   for (first_column = g_list_first (tree_view->priv->columns);
2167        first_column && !(GTK_TREE_VIEW_COLUMN (first_column->data)->visible);
2168        first_column = first_column->next)
2169     ;
2170
2171   allocation.y = 0;
2172   allocation.height = tree_view->priv->header_height;
2173
2174   rtl = (gtk_widget_get_direction (widget) == GTK_TEXT_DIR_RTL);
2175
2176   /* find out how many extra space and expandable columns we have */
2177   for (list = tree_view->priv->columns; list != last_column->next; list = list->next)
2178     {
2179       column = (GtkTreeViewColumn *)list->data;
2180
2181       if (!column->visible)
2182         continue;
2183
2184       full_requested_width += gtk_tree_view_get_real_requested_width_from_column (tree_view, column);
2185
2186       if (column->expand)
2187         number_of_expand_columns++;
2188     }
2189
2190   /* Only update the expand value if the width of the widget has changed,
2191    * or the number of expand columns has changed, or if there are no expand
2192    * columns, or if we didn't have an size-allocation yet after the
2193    * last validated node.
2194    */
2195   update_expand = (width_changed && *width_changed == TRUE)
2196       || number_of_expand_columns != tree_view->priv->last_number_of_expand_columns
2197       || number_of_expand_columns == 0
2198       || tree_view->priv->post_validation_flag == TRUE;
2199
2200   tree_view->priv->post_validation_flag = FALSE;
2201
2202   gtk_widget_get_allocation (widget, &widget_allocation);
2203   if (!update_expand)
2204     {
2205       extra = tree_view->priv->last_extra_space;
2206       extra_for_last = MAX (widget_allocation.width - full_requested_width - extra, 0);
2207     }
2208   else
2209     {
2210       extra = MAX (widget_allocation.width - full_requested_width, 0);
2211       extra_for_last = 0;
2212
2213       tree_view->priv->last_extra_space = extra;
2214     }
2215
2216   if (number_of_expand_columns > 0)
2217     extra_per_column = extra/number_of_expand_columns;
2218   else
2219     extra_per_column = 0;
2220
2221   if (update_expand)
2222     {
2223       tree_view->priv->last_extra_space_per_column = extra_per_column;
2224       tree_view->priv->last_number_of_expand_columns = number_of_expand_columns;
2225     }
2226
2227   for (list = (rtl ? last_column : first_column);
2228        list != (rtl ? first_column->prev : last_column->next);
2229        list = (rtl ? list->prev : list->next))
2230     {
2231       gint real_requested_width = 0;
2232       gint old_width;
2233
2234       column = list->data;
2235       old_width = column->width;
2236
2237       if (!column->visible)
2238         continue;
2239
2240       /* We need to handle the dragged button specially.
2241        */
2242       if (column == tree_view->priv->drag_column)
2243         {
2244           GtkAllocation drag_allocation;
2245
2246           drag_allocation.x = 0;
2247           drag_allocation.y = 0;
2248           drag_allocation.width = gdk_window_get_width (tree_view->priv->drag_window);
2249           drag_allocation.height = gdk_window_get_height (tree_view->priv->drag_window);
2250           gtk_widget_size_allocate (tree_view->priv->drag_column->button,
2251                                     &drag_allocation);
2252           width += drag_allocation.width;
2253           continue;
2254         }
2255
2256       real_requested_width = gtk_tree_view_get_real_requested_width_from_column (tree_view, column);
2257
2258       allocation.x = width;
2259       column->width = real_requested_width;
2260
2261       if (column->expand)
2262         {
2263           if (number_of_expand_columns == 1)
2264             {
2265               /* We add the remander to the last column as
2266                * */
2267               column->width += extra;
2268             }
2269           else
2270             {
2271               column->width += extra_per_column;
2272               extra -= extra_per_column;
2273               number_of_expand_columns --;
2274             }
2275         }
2276       else if (number_of_expand_columns == 0 &&
2277                list == last_column)
2278         {
2279           column->width += extra;
2280         }
2281
2282       /* In addition to expand, the last column can get even more
2283        * extra space so all available space is filled up.
2284        */
2285       if (extra_for_last > 0 && list == last_column)
2286         column->width += extra_for_last;
2287
2288       g_object_notify (G_OBJECT (column), "width");
2289
2290       allocation.width = column->width;
2291       width += column->width;
2292
2293       if (column->width > old_width)
2294         column_changed = TRUE;
2295
2296       gtk_widget_size_allocate (column->button, &allocation);
2297
2298       if (column->window)
2299         gdk_window_move_resize (column->window,
2300                                 allocation.x + (rtl ? 0 : allocation.width) - TREE_VIEW_DRAG_WIDTH/2,
2301                                 allocation.y,
2302                                 TREE_VIEW_DRAG_WIDTH, allocation.height);
2303     }
2304
2305   /* We change the width here.  The user might have been resizing columns,
2306    * so the total width of the tree view changes.
2307    */
2308   tree_view->priv->width = width;
2309   if (width_changed)
2310     *width_changed = TRUE;
2311
2312   if (column_changed)
2313     gtk_widget_queue_draw (GTK_WIDGET (tree_view));
2314 }
2315
2316
2317 static void
2318 gtk_tree_view_size_allocate (GtkWidget     *widget,
2319                              GtkAllocation *allocation)
2320 {
2321   GtkAllocation widget_allocation;
2322   GtkTreeView *tree_view = GTK_TREE_VIEW (widget);
2323   GList *tmp_list;
2324   gboolean width_changed = FALSE;
2325   gint old_width;
2326
2327   gtk_widget_get_allocation (widget, &widget_allocation);
2328   old_width = widget_allocation.width;
2329   if (allocation->width != widget_allocation.width)
2330     width_changed = TRUE;
2331
2332   gtk_widget_set_allocation (widget, allocation);
2333
2334   tmp_list = tree_view->priv->children;
2335
2336   while (tmp_list)
2337     {
2338       GtkAllocation allocation;
2339
2340       GtkTreeViewChild *child = tmp_list->data;
2341       tmp_list = tmp_list->next;
2342
2343       /* totally ignore our child's requisition */
2344       allocation.x = child->x;
2345       allocation.y = child->y;
2346       allocation.width = child->width;
2347       allocation.height = child->height;
2348       gtk_widget_size_allocate (child->widget, &allocation);
2349     }
2350
2351   /* We size-allocate the columns first because the width of the
2352    * tree view (used in updating the adjustments below) might change.
2353    */
2354   gtk_tree_view_size_allocate_columns (widget, &width_changed);
2355
2356   g_object_freeze_notify (G_OBJECT (tree_view->priv->hadjustment));
2357   gtk_adjustment_set_page_size (tree_view->priv->hadjustment,
2358                                 allocation->width);
2359   gtk_adjustment_set_page_increment (tree_view->priv->hadjustment,
2360                                      allocation->width * 0.9);
2361   gtk_adjustment_set_step_increment (tree_view->priv->hadjustment,
2362                                      allocation->width * 0.1);
2363   gtk_adjustment_set_lower (tree_view->priv->hadjustment, 0);
2364   gtk_adjustment_set_upper (tree_view->priv->hadjustment,
2365                             MAX (tree_view->priv->hadjustment->page_size,
2366                                  tree_view->priv->width));
2367   g_object_thaw_notify (G_OBJECT (tree_view->priv->hadjustment));
2368
2369   if (gtk_widget_get_direction(widget) == GTK_TEXT_DIR_RTL)
2370     {
2371       if (allocation->width < tree_view->priv->width)
2372         {
2373           if (tree_view->priv->init_hadjust_value)
2374             {
2375               gtk_adjustment_set_value (tree_view->priv->hadjustment,
2376                                         MAX (tree_view->priv->width -
2377                                              allocation->width, 0));
2378               tree_view->priv->init_hadjust_value = FALSE;
2379             }
2380           else if (allocation->width != old_width)
2381             {
2382               gtk_adjustment_set_value (tree_view->priv->hadjustment,
2383                                         CLAMP (tree_view->priv->hadjustment->value - allocation->width + old_width,
2384                                                0,
2385                                                tree_view->priv->width - allocation->width));
2386             }
2387           else
2388             gtk_adjustment_set_value (tree_view->priv->hadjustment,
2389                                       CLAMP (tree_view->priv->width - (tree_view->priv->prev_width - tree_view->priv->hadjustment->value),
2390                                              0,
2391                                              tree_view->priv->width - allocation->width));
2392         }
2393       else
2394         {
2395           gtk_adjustment_set_value (tree_view->priv->hadjustment, 0);
2396           tree_view->priv->init_hadjust_value = TRUE;
2397         }
2398     }
2399   else
2400     if (tree_view->priv->hadjustment->value + allocation->width > tree_view->priv->width)
2401       gtk_adjustment_set_value (tree_view->priv->hadjustment,
2402                                 MAX (tree_view->priv->width -
2403                                      allocation->width, 0));
2404
2405   g_object_freeze_notify (G_OBJECT (tree_view->priv->vadjustment));
2406   gtk_adjustment_set_page_size (tree_view->priv->vadjustment,
2407                                 allocation->height -
2408                                 TREE_VIEW_HEADER_HEIGHT (tree_view));
2409   gtk_adjustment_set_step_increment (tree_view->priv->vadjustment,
2410                                      tree_view->priv->vadjustment->page_size * 0.1);
2411   gtk_adjustment_set_page_increment (tree_view->priv->vadjustment,
2412                                      tree_view->priv->vadjustment->page_size * 0.9);
2413   gtk_adjustment_set_lower (tree_view->priv->vadjustment, 0);
2414   gtk_adjustment_set_upper (tree_view->priv->vadjustment,
2415                             MAX (tree_view->priv->vadjustment->page_size,
2416                                  tree_view->priv->height));
2417   g_object_thaw_notify (G_OBJECT (tree_view->priv->vadjustment));
2418
2419   /* now the adjustments and window sizes are in sync, we can sync toprow/dy again */
2420   if (tree_view->priv->height <= tree_view->priv->vadjustment->page_size)
2421     gtk_adjustment_set_value (GTK_ADJUSTMENT (tree_view->priv->vadjustment), 0);
2422   else if (tree_view->priv->vadjustment->value + tree_view->priv->vadjustment->page_size > tree_view->priv->height)
2423     gtk_adjustment_set_value (GTK_ADJUSTMENT (tree_view->priv->vadjustment),
2424                               tree_view->priv->height - tree_view->priv->vadjustment->page_size);
2425   else if (gtk_tree_row_reference_valid (tree_view->priv->top_row))
2426     gtk_tree_view_top_row_to_dy (tree_view);
2427   else
2428     gtk_tree_view_dy_to_top_row (tree_view);
2429
2430   if (gtk_widget_get_realized (widget))
2431     {
2432       gdk_window_move_resize (gtk_widget_get_window (widget),
2433                               allocation->x, allocation->y,
2434                               allocation->width, allocation->height);
2435       gdk_window_move_resize (tree_view->priv->header_window,
2436                               - (gint) tree_view->priv->hadjustment->value,
2437                               0,
2438                               MAX (tree_view->priv->width, allocation->width),
2439                               tree_view->priv->header_height);
2440       gdk_window_move_resize (tree_view->priv->bin_window,
2441                               - (gint) tree_view->priv->hadjustment->value,
2442                               TREE_VIEW_HEADER_HEIGHT (tree_view),
2443                               MAX (tree_view->priv->width, allocation->width),
2444                               allocation->height - TREE_VIEW_HEADER_HEIGHT (tree_view));
2445     }
2446
2447   if (tree_view->priv->tree == NULL)
2448     invalidate_empty_focus (tree_view);
2449
2450   if (gtk_widget_get_realized (widget))
2451     {
2452       gboolean has_expand_column = FALSE;
2453       for (tmp_list = tree_view->priv->columns; tmp_list; tmp_list = tmp_list->next)
2454         {
2455           if (gtk_tree_view_column_get_expand (GTK_TREE_VIEW_COLUMN (tmp_list->data)))
2456             {
2457               has_expand_column = TRUE;
2458               break;
2459             }
2460         }
2461
2462       if (width_changed && tree_view->priv->expander_column)
2463         {
2464           /* Might seem awkward, but is the best heuristic I could come up
2465            * with.  Only if the width of the columns before the expander
2466            * changes, we will update the prelight status.  It is this
2467            * width that makes the expander move vertically.  Always updating
2468            * prelight status causes trouble with hover selections.
2469            */
2470           gint width_before_expander;
2471
2472           width_before_expander = gtk_tree_view_calculate_width_before_expander (tree_view);
2473
2474           if (tree_view->priv->prev_width_before_expander
2475               != width_before_expander)
2476               update_prelight (tree_view,
2477                                tree_view->priv->event_last_x,
2478                                tree_view->priv->event_last_y);
2479
2480           tree_view->priv->prev_width_before_expander = width_before_expander;
2481         }
2482
2483       /* This little hack only works if we have an LTR locale, and no column has the  */
2484       if (width_changed)
2485         {
2486           if (gtk_widget_get_direction (GTK_WIDGET (tree_view)) == GTK_TEXT_DIR_LTR &&
2487               ! has_expand_column)
2488             invalidate_last_column (tree_view);
2489           else
2490             gtk_widget_queue_draw (widget);
2491         }
2492     }
2493 }
2494
2495 /* Grabs the focus and unsets the GTK_TREE_VIEW_DRAW_KEYFOCUS flag */
2496 static void
2497 grab_focus_and_unset_draw_keyfocus (GtkTreeView *tree_view)
2498 {
2499   GtkWidget *widget = GTK_WIDGET (tree_view);
2500
2501   if (gtk_widget_get_can_focus (widget) && !gtk_widget_has_focus (widget))
2502     gtk_widget_grab_focus (widget);
2503   GTK_TREE_VIEW_UNSET_FLAG (tree_view, GTK_TREE_VIEW_DRAW_KEYFOCUS);
2504 }
2505
2506 static inline gboolean
2507 row_is_separator (GtkTreeView *tree_view,
2508                   GtkTreeIter *iter,
2509                   GtkTreePath *path)
2510 {
2511   gboolean is_separator = FALSE;
2512
2513   if (tree_view->priv->row_separator_func)
2514     {
2515       GtkTreeIter tmpiter;
2516
2517       if (iter)
2518         tmpiter = *iter;
2519       else
2520         gtk_tree_model_get_iter (tree_view->priv->model, &tmpiter, path);
2521
2522       is_separator = tree_view->priv->row_separator_func (tree_view->priv->model,
2523                                                           &tmpiter,
2524                                                           tree_view->priv->row_separator_data);
2525     }
2526
2527   return is_separator;
2528 }
2529
2530 static gboolean
2531 gtk_tree_view_button_press (GtkWidget      *widget,
2532                             GdkEventButton *event)
2533 {
2534   GtkTreeView *tree_view = GTK_TREE_VIEW (widget);
2535   GList *list;
2536   GtkTreeViewColumn *column = NULL;
2537   gint i;
2538   GdkRectangle background_area;
2539   GdkRectangle cell_area;
2540   gint vertical_separator;
2541   gint horizontal_separator;
2542   gboolean path_is_selectable;
2543   gboolean rtl;
2544
2545   rtl = (gtk_widget_get_direction (widget) == GTK_TEXT_DIR_RTL);
2546   gtk_tree_view_stop_editing (tree_view, FALSE);
2547   gtk_widget_style_get (widget,
2548                         "vertical-separator", &vertical_separator,
2549                         "horizontal-separator", &horizontal_separator,
2550                         NULL);
2551
2552
2553   /* Because grab_focus can cause reentrancy, we delay grab_focus until after
2554    * we're done handling the button press.
2555    */
2556
2557   if (event->window == tree_view->priv->bin_window)
2558     {
2559       GtkRBNode *node;
2560       GtkRBTree *tree;
2561       GtkTreePath *path;
2562       gchar *path_string;
2563       gint depth;
2564       gint new_y;
2565       gint y_offset;
2566       gint dval;
2567       gint pre_val, aft_val;
2568       GtkTreeViewColumn *column = NULL;
2569       GtkCellRenderer *focus_cell = NULL;
2570       gint column_handled_click = FALSE;
2571       gboolean row_double_click = FALSE;
2572       gboolean rtl;
2573       gboolean node_selected;
2574
2575       /* Empty tree? */
2576       if (tree_view->priv->tree == NULL)
2577         {
2578           grab_focus_and_unset_draw_keyfocus (tree_view);
2579           return TRUE;
2580         }
2581
2582       /* are we in an arrow? */
2583       if (tree_view->priv->prelight_node &&
2584           GTK_TREE_VIEW_FLAG_SET (tree_view, GTK_TREE_VIEW_ARROW_PRELIT) &&
2585           TREE_VIEW_DRAW_EXPANDERS (tree_view))
2586         {
2587           if (event->button == 1)
2588             {
2589               gtk_grab_add (widget);
2590               tree_view->priv->button_pressed_node = tree_view->priv->prelight_node;
2591               tree_view->priv->button_pressed_tree = tree_view->priv->prelight_tree;
2592               gtk_tree_view_queue_draw_arrow (GTK_TREE_VIEW (widget),
2593                                               tree_view->priv->prelight_tree,
2594                                               tree_view->priv->prelight_node);
2595             }
2596
2597           grab_focus_and_unset_draw_keyfocus (tree_view);
2598           return TRUE;
2599         }
2600
2601       /* find the node that was clicked */
2602       new_y = TREE_WINDOW_Y_TO_RBTREE_Y(tree_view, event->y);
2603       if (new_y < 0)
2604         new_y = 0;
2605       y_offset = -_gtk_rbtree_find_offset (tree_view->priv->tree, new_y, &tree, &node);
2606
2607       if (node == NULL)
2608         {
2609           /* We clicked in dead space */
2610           grab_focus_and_unset_draw_keyfocus (tree_view);
2611           return TRUE;
2612         }
2613
2614       /* Get the path and the node */
2615       path = _gtk_tree_view_find_path (tree_view, tree, node);
2616       path_is_selectable = !row_is_separator (tree_view, NULL, path);
2617
2618       if (!path_is_selectable)
2619         {
2620           gtk_tree_path_free (path);
2621           grab_focus_and_unset_draw_keyfocus (tree_view);
2622           return TRUE;
2623         }
2624
2625       depth = gtk_tree_path_get_depth (path);
2626       background_area.y = y_offset + event->y;
2627       background_area.height = ROW_HEIGHT (tree_view, GTK_RBNODE_GET_HEIGHT (node));
2628       background_area.x = 0;
2629
2630
2631       /* Let the column have a chance at selecting it. */
2632       rtl = (gtk_widget_get_direction (GTK_WIDGET (tree_view)) == GTK_TEXT_DIR_RTL);
2633       for (list = (rtl ? g_list_last (tree_view->priv->columns) : g_list_first (tree_view->priv->columns));
2634            list; list = (rtl ? list->prev : list->next))
2635         {
2636           GtkTreeViewColumn *candidate = list->data;
2637
2638           if (!candidate->visible)
2639             continue;
2640
2641           background_area.width = candidate->width;
2642           if ((background_area.x > (gint) event->x) ||
2643               (background_area.x + background_area.width <= (gint) event->x))
2644             {
2645               background_area.x += background_area.width;
2646               continue;
2647             }
2648
2649           /* we found the focus column */
2650           column = candidate;
2651           cell_area = background_area;
2652           cell_area.width -= horizontal_separator;
2653           cell_area.height -= vertical_separator;
2654           cell_area.x += horizontal_separator/2;
2655           cell_area.y += vertical_separator/2;
2656           if (gtk_tree_view_is_expander_column (tree_view, column))
2657             {
2658               if (!rtl)
2659                 cell_area.x += (depth - 1) * tree_view->priv->level_indentation;
2660               cell_area.width -= (depth - 1) * tree_view->priv->level_indentation;
2661
2662               if (TREE_VIEW_DRAW_EXPANDERS (tree_view))
2663                 {
2664                   if (!rtl)
2665                     cell_area.x += depth * tree_view->priv->expander_size;
2666                   cell_area.width -= depth * tree_view->priv->expander_size;
2667                 }
2668             }
2669           break;
2670         }
2671
2672       if (column == NULL)
2673         {
2674           gtk_tree_path_free (path);
2675           grab_focus_and_unset_draw_keyfocus (tree_view);
2676           return FALSE;
2677         }
2678
2679       tree_view->priv->focus_column = column;
2680
2681       /* decide if we edit */
2682       if (event->type == GDK_BUTTON_PRESS && event->button == 1 &&
2683           !(event->state & gtk_accelerator_get_default_mod_mask ()))
2684         {
2685           GtkTreePath *anchor;
2686           GtkTreeIter iter;
2687
2688           gtk_tree_model_get_iter (tree_view->priv->model, &iter, path);
2689           gtk_tree_view_column_cell_set_cell_data (column,
2690                                                    tree_view->priv->model,
2691                                                    &iter,
2692                                                    GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_PARENT),
2693                                                    node->children?TRUE:FALSE);
2694
2695           if (tree_view->priv->anchor)
2696             anchor = gtk_tree_row_reference_get_path (tree_view->priv->anchor);
2697           else
2698             anchor = NULL;
2699
2700           if ((anchor && !gtk_tree_path_compare (anchor, path))
2701               || !_gtk_tree_view_column_has_editable_cell (column))
2702             {
2703               GtkCellEditable *cell_editable = NULL;
2704
2705               /* FIXME: get the right flags */
2706               guint flags = 0;
2707
2708               path_string = gtk_tree_path_to_string (path);
2709
2710               if (_gtk_tree_view_column_cell_event (column,
2711                                                     &cell_editable,
2712                                                     (GdkEvent *)event,
2713                                                     path_string,
2714                                                     &background_area,
2715                                                     &cell_area, flags))
2716                 {
2717                   if (cell_editable != NULL)
2718                     {
2719                       gint left, right;
2720                       GdkRectangle area;
2721
2722                       area = cell_area;
2723                       _gtk_tree_view_column_get_neighbor_sizes (column, _gtk_tree_view_column_get_edited_cell (column), &left, &right);
2724
2725                       area.x += left;
2726                       area.width -= right + left;
2727
2728                       gtk_tree_view_real_start_editing (tree_view,
2729                                                         column,
2730                                                         path,
2731                                                         cell_editable,
2732                                                         &area,
2733                                                         (GdkEvent *)event,
2734                                                         flags);
2735                       g_free (path_string);
2736                       gtk_tree_path_free (path);
2737                       gtk_tree_path_free (anchor);
2738                       return TRUE;
2739                     }
2740                   column_handled_click = TRUE;
2741                 }
2742               g_free (path_string);
2743             }
2744           if (anchor)
2745             gtk_tree_path_free (anchor);
2746         }
2747
2748       /* select */
2749       node_selected = GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_SELECTED);
2750       pre_val = tree_view->priv->vadjustment->value;
2751
2752       /* we only handle selection modifications on the first button press
2753        */
2754       if (event->type == GDK_BUTTON_PRESS)
2755         {
2756           if ((event->state & GDK_CONTROL_MASK) == GDK_CONTROL_MASK)
2757             tree_view->priv->ctrl_pressed = TRUE;
2758           if ((event->state & GDK_SHIFT_MASK) == GDK_SHIFT_MASK)
2759             tree_view->priv->shift_pressed = TRUE;
2760
2761           focus_cell = _gtk_tree_view_column_get_cell_at_pos (column, event->x - background_area.x);
2762           if (focus_cell)
2763             gtk_tree_view_column_focus_cell (column, focus_cell);
2764
2765           if (event->state & GDK_CONTROL_MASK)
2766             {
2767               gtk_tree_view_real_set_cursor (tree_view, path, FALSE, TRUE);
2768               gtk_tree_view_real_toggle_cursor_row (tree_view);
2769             }
2770           else if (event->state & GDK_SHIFT_MASK)
2771             {
2772               gtk_tree_view_real_set_cursor (tree_view, path, FALSE, TRUE);
2773               gtk_tree_view_real_select_cursor_row (tree_view, FALSE);
2774             }
2775           else
2776             {
2777               gtk_tree_view_real_set_cursor (tree_view, path, TRUE, TRUE);
2778             }
2779
2780           tree_view->priv->ctrl_pressed = FALSE;
2781           tree_view->priv->shift_pressed = FALSE;
2782         }
2783
2784       /* the treeview may have been scrolled because of _set_cursor,
2785        * correct here
2786        */
2787
2788       aft_val = tree_view->priv->vadjustment->value;
2789       dval = pre_val - aft_val;
2790
2791       cell_area.y += dval;
2792       background_area.y += dval;
2793
2794       /* Save press to possibly begin a drag
2795        */
2796       if (!column_handled_click &&
2797           !tree_view->priv->in_grab &&
2798           tree_view->priv->pressed_button < 0)
2799         {
2800           tree_view->priv->pressed_button = event->button;
2801           tree_view->priv->press_start_x = event->x;
2802           tree_view->priv->press_start_y = event->y;
2803
2804           if (tree_view->priv->rubber_banding_enable
2805               && !node_selected
2806               && tree_view->priv->selection->type == GTK_SELECTION_MULTIPLE)
2807             {
2808               tree_view->priv->press_start_y += tree_view->priv->dy;
2809               tree_view->priv->rubber_band_x = event->x;
2810               tree_view->priv->rubber_band_y = event->y + tree_view->priv->dy;
2811               tree_view->priv->rubber_band_status = RUBBER_BAND_MAYBE_START;
2812
2813               if ((event->state & GDK_CONTROL_MASK) == GDK_CONTROL_MASK)
2814                 tree_view->priv->rubber_band_ctrl = TRUE;
2815               if ((event->state & GDK_SHIFT_MASK) == GDK_SHIFT_MASK)
2816                 tree_view->priv->rubber_band_shift = TRUE;
2817             }
2818         }
2819
2820       /* Test if a double click happened on the same row. */
2821       if (event->button == 1 && event->type == GDK_BUTTON_PRESS)
2822         {
2823           int double_click_time, double_click_distance;
2824
2825           g_object_get (gtk_settings_get_default (),
2826                         "gtk-double-click-time", &double_click_time,
2827                         "gtk-double-click-distance", &double_click_distance,
2828                         NULL);
2829
2830           /* Same conditions as _gdk_event_button_generate */
2831           if (tree_view->priv->last_button_x != -1 &&
2832               (event->time < tree_view->priv->last_button_time + double_click_time) &&
2833               (ABS (event->x - tree_view->priv->last_button_x) <= double_click_distance) &&
2834               (ABS (event->y - tree_view->priv->last_button_y) <= double_click_distance))
2835             {
2836               /* We do no longer compare paths of this row and the
2837                * row clicked previously.  We use the double click
2838                * distance to decide whether this is a valid click,
2839                * allowing the mouse to slightly move over another row.
2840                */
2841               row_double_click = TRUE;
2842
2843               tree_view->priv->last_button_time = 0;
2844               tree_view->priv->last_button_x = -1;
2845               tree_view->priv->last_button_y = -1;
2846             }
2847           else
2848             {
2849               tree_view->priv->last_button_time = event->time;
2850               tree_view->priv->last_button_x = event->x;
2851               tree_view->priv->last_button_y = event->y;
2852             }
2853         }
2854
2855       if (row_double_click)
2856         {
2857           gtk_grab_remove (widget);
2858           gtk_tree_view_row_activated (tree_view, path, column);
2859
2860           if (tree_view->priv->pressed_button == event->button)
2861             tree_view->priv->pressed_button = -1;
2862         }
2863
2864       gtk_tree_path_free (path);
2865
2866       /* If we activated the row through a double click we don't want to grab
2867        * focus back, as moving focus to another widget is pretty common.
2868        */
2869       if (!row_double_click)
2870         grab_focus_and_unset_draw_keyfocus (tree_view);
2871
2872       return TRUE;
2873     }
2874
2875   /* We didn't click in the window.  Let's check to see if we clicked on a column resize window.
2876    */
2877   for (i = 0, list = tree_view->priv->columns; list; list = list->next, i++)
2878     {
2879       column = list->data;
2880       if (event->window == column->window &&
2881           column->resizable &&
2882           column->window)
2883         {
2884           GtkAllocation button_allocation;
2885           gpointer drag_data;
2886
2887           if (event->type == GDK_2BUTTON_PRESS &&
2888               gtk_tree_view_column_get_sizing (column) != GTK_TREE_VIEW_COLUMN_AUTOSIZE)
2889             {
2890               column->use_resized_width = FALSE;
2891               _gtk_tree_view_column_autosize (tree_view, column);
2892               return TRUE;
2893             }
2894
2895           if (gdk_pointer_grab (column->window, FALSE,
2896                                 GDK_POINTER_MOTION_HINT_MASK |
2897                                 GDK_BUTTON1_MOTION_MASK |
2898                                 GDK_BUTTON_RELEASE_MASK,
2899                                 NULL, NULL, event->time))
2900             return FALSE;
2901
2902           gtk_grab_add (widget);
2903           GTK_TREE_VIEW_SET_FLAG (tree_view, GTK_TREE_VIEW_IN_COLUMN_RESIZE);
2904           column->resized_width = column->width - tree_view->priv->last_extra_space_per_column;
2905
2906           /* block attached dnd signal handler */
2907           drag_data = g_object_get_data (G_OBJECT (widget), "gtk-site-data");
2908           if (drag_data)
2909             g_signal_handlers_block_matched (widget,
2910                                              G_SIGNAL_MATCH_DATA,
2911                                              0, 0, NULL, NULL,
2912                                              drag_data);
2913
2914           gtk_widget_get_allocation (column->button, &button_allocation);
2915           tree_view->priv->drag_pos = i;
2916           tree_view->priv->x_drag = button_allocation.x + (rtl ? 0 : button_allocation.width);
2917
2918           if (!gtk_widget_has_focus (widget))
2919             gtk_widget_grab_focus (widget);
2920
2921           return TRUE;
2922         }
2923     }
2924   return FALSE;
2925 }
2926
2927 /* GtkWidget::button_release_event helper */
2928 static gboolean
2929 gtk_tree_view_button_release_drag_column (GtkWidget      *widget,
2930                                           GdkEventButton *event)
2931 {
2932   GtkTreeView *tree_view;
2933   GList *l;
2934   gboolean rtl;
2935
2936   tree_view = GTK_TREE_VIEW (widget);
2937
2938   rtl = (gtk_widget_get_direction (widget) == GTK_TEXT_DIR_RTL);
2939   gdk_display_pointer_ungrab (gtk_widget_get_display (widget), GDK_CURRENT_TIME);
2940   gdk_display_keyboard_ungrab (gtk_widget_get_display (widget), GDK_CURRENT_TIME);
2941
2942   /* Move the button back */
2943   g_object_ref (tree_view->priv->drag_column->button);
2944   gtk_container_remove (GTK_CONTAINER (tree_view), tree_view->priv->drag_column->button);
2945   gtk_widget_set_parent_window (tree_view->priv->drag_column->button, tree_view->priv->header_window);
2946   gtk_widget_set_parent (tree_view->priv->drag_column->button, GTK_WIDGET (tree_view));
2947   g_object_unref (tree_view->priv->drag_column->button);
2948   gtk_widget_queue_resize (widget);
2949   if (tree_view->priv->drag_column->resizable)
2950     {
2951       gdk_window_raise (tree_view->priv->drag_column->window);
2952       gdk_window_show (tree_view->priv->drag_column->window);
2953     }
2954   else
2955     gdk_window_hide (tree_view->priv->drag_column->window);
2956
2957   gtk_widget_grab_focus (tree_view->priv->drag_column->button);
2958
2959   if (rtl)
2960     {
2961       if (tree_view->priv->cur_reorder &&
2962           tree_view->priv->cur_reorder->right_column != tree_view->priv->drag_column)
2963         gtk_tree_view_move_column_after (tree_view, tree_view->priv->drag_column,
2964                                          tree_view->priv->cur_reorder->right_column);
2965     }
2966   else
2967     {
2968       if (tree_view->priv->cur_reorder &&
2969           tree_view->priv->cur_reorder->left_column != tree_view->priv->drag_column)
2970         gtk_tree_view_move_column_after (tree_view, tree_view->priv->drag_column,
2971                                          tree_view->priv->cur_reorder->left_column);
2972     }
2973   tree_view->priv->drag_column = NULL;
2974   gdk_window_hide (tree_view->priv->drag_window);
2975
2976   for (l = tree_view->priv->column_drag_info; l != NULL; l = l->next)
2977     g_slice_free (GtkTreeViewColumnReorder, l->data);
2978   g_list_free (tree_view->priv->column_drag_info);
2979   tree_view->priv->column_drag_info = NULL;
2980   tree_view->priv->cur_reorder = NULL;
2981
2982   if (tree_view->priv->drag_highlight_window)
2983     gdk_window_hide (tree_view->priv->drag_highlight_window);
2984
2985   /* Reset our flags */
2986   tree_view->priv->drag_column_window_state = DRAG_COLUMN_WINDOW_STATE_UNSET;
2987   GTK_TREE_VIEW_UNSET_FLAG (tree_view, GTK_TREE_VIEW_IN_COLUMN_DRAG);
2988
2989   return TRUE;
2990 }
2991
2992 /* GtkWidget::button_release_event helper */
2993 static gboolean
2994 gtk_tree_view_button_release_column_resize (GtkWidget      *widget,
2995                                             GdkEventButton *event)
2996 {
2997   GtkTreeView *tree_view;
2998   gpointer drag_data;
2999
3000   tree_view = GTK_TREE_VIEW (widget);
3001
3002   tree_view->priv->drag_pos = -1;
3003
3004   /* unblock attached dnd signal handler */
3005   drag_data = g_object_get_data (G_OBJECT (widget), "gtk-site-data");
3006   if (drag_data)
3007     g_signal_handlers_unblock_matched (widget,
3008                                        G_SIGNAL_MATCH_DATA,
3009                                        0, 0, NULL, NULL,
3010                                        drag_data);
3011
3012   GTK_TREE_VIEW_UNSET_FLAG (tree_view, GTK_TREE_VIEW_IN_COLUMN_RESIZE);
3013   gtk_grab_remove (widget);
3014   gdk_display_pointer_ungrab (gdk_window_get_display (event->window),
3015                               event->time);
3016   return TRUE;
3017 }
3018
3019 static gboolean
3020 gtk_tree_view_button_release (GtkWidget      *widget,
3021                               GdkEventButton *event)
3022 {
3023   GtkTreeView *tree_view = GTK_TREE_VIEW (widget);
3024
3025   if (GTK_TREE_VIEW_FLAG_SET (tree_view, GTK_TREE_VIEW_IN_COLUMN_DRAG))
3026     return gtk_tree_view_button_release_drag_column (widget, event);
3027
3028   if (tree_view->priv->rubber_band_status)
3029     gtk_tree_view_stop_rubber_band (tree_view);
3030
3031   if (tree_view->priv->pressed_button == event->button)
3032     tree_view->priv->pressed_button = -1;
3033
3034   if (GTK_TREE_VIEW_FLAG_SET (tree_view, GTK_TREE_VIEW_IN_COLUMN_RESIZE))
3035     return gtk_tree_view_button_release_column_resize (widget, event);
3036
3037   if (tree_view->priv->button_pressed_node == NULL)
3038     return FALSE;
3039
3040   if (event->button == 1)
3041     {
3042       gtk_grab_remove (widget);
3043       if (tree_view->priv->button_pressed_node == tree_view->priv->prelight_node &&
3044           GTK_TREE_VIEW_FLAG_SET (tree_view, GTK_TREE_VIEW_ARROW_PRELIT))
3045         {
3046           GtkTreePath *path = NULL;
3047
3048           path = _gtk_tree_view_find_path (tree_view,
3049                                            tree_view->priv->button_pressed_tree,
3050                                            tree_view->priv->button_pressed_node);
3051           /* Actually activate the node */
3052           if (tree_view->priv->button_pressed_node->children == NULL)
3053             gtk_tree_view_real_expand_row (tree_view, path,
3054                                            tree_view->priv->button_pressed_tree,
3055                                            tree_view->priv->button_pressed_node,
3056                                            FALSE, TRUE);
3057           else
3058             gtk_tree_view_real_collapse_row (GTK_TREE_VIEW (widget), path,
3059                                              tree_view->priv->button_pressed_tree,
3060                                              tree_view->priv->button_pressed_node, TRUE);
3061           gtk_tree_path_free (path);
3062         }
3063
3064       tree_view->priv->button_pressed_tree = NULL;
3065       tree_view->priv->button_pressed_node = NULL;
3066     }
3067
3068   return TRUE;
3069 }
3070
3071 static gboolean
3072 gtk_tree_view_grab_broken (GtkWidget          *widget,
3073                            GdkEventGrabBroken *event)
3074 {
3075   GtkTreeView *tree_view = GTK_TREE_VIEW (widget);
3076
3077   if (GTK_TREE_VIEW_FLAG_SET (tree_view, GTK_TREE_VIEW_IN_COLUMN_DRAG))
3078     gtk_tree_view_button_release_drag_column (widget, (GdkEventButton *)event);
3079
3080   if (GTK_TREE_VIEW_FLAG_SET (tree_view, GTK_TREE_VIEW_IN_COLUMN_RESIZE))
3081     gtk_tree_view_button_release_column_resize (widget, (GdkEventButton *)event);
3082
3083   return TRUE;
3084 }
3085
3086 #if 0
3087 static gboolean
3088 gtk_tree_view_configure (GtkWidget *widget,
3089                          GdkEventConfigure *event)
3090 {
3091   GtkTreeView *tree_view;
3092
3093   tree_view = GTK_TREE_VIEW (widget);
3094   tree_view->priv->search_position_func (tree_view, tree_view->priv->search_window);
3095
3096   return FALSE;
3097 }
3098 #endif
3099
3100 /* GtkWidget::motion_event function set.
3101  */
3102
3103 static gboolean
3104 coords_are_over_arrow (GtkTreeView *tree_view,
3105                        GtkRBTree   *tree,
3106                        GtkRBNode   *node,
3107                        /* these are in bin window coords */
3108                        gint         x,
3109                        gint         y)
3110 {
3111   GdkRectangle arrow;
3112   gint x2;
3113
3114   if (!gtk_widget_get_realized (GTK_WIDGET (tree_view)))
3115     return FALSE;
3116
3117   if ((node->flags & GTK_RBNODE_IS_PARENT) == 0)
3118     return FALSE;
3119
3120   arrow.y = BACKGROUND_FIRST_PIXEL (tree_view, tree, node);
3121
3122   arrow.height = ROW_HEIGHT (tree_view, BACKGROUND_HEIGHT (node));
3123
3124   gtk_tree_view_get_arrow_xrange (tree_view, tree, &arrow.x, &x2);
3125
3126   arrow.width = x2 - arrow.x;
3127
3128   return (x >= arrow.x &&
3129           x < (arrow.x + arrow.width) &&
3130           y >= arrow.y &&
3131           y < (arrow.y + arrow.height));
3132 }
3133
3134 static gboolean
3135 auto_expand_timeout (gpointer data)
3136 {
3137   GtkTreeView *tree_view = GTK_TREE_VIEW (data);
3138   GtkTreePath *path;
3139
3140   if (tree_view->priv->prelight_node)
3141     {
3142       path = _gtk_tree_view_find_path (tree_view,
3143                                        tree_view->priv->prelight_tree,
3144                                        tree_view->priv->prelight_node);
3145
3146       if (tree_view->priv->prelight_node->children)
3147         gtk_tree_view_collapse_row (tree_view, path);
3148       else
3149         gtk_tree_view_expand_row (tree_view, path, FALSE);
3150
3151       gtk_tree_path_free (path);
3152     }
3153
3154   tree_view->priv->auto_expand_timeout = 0;
3155
3156   return FALSE;
3157 }
3158
3159 static void
3160 remove_auto_expand_timeout (GtkTreeView *tree_view)
3161 {
3162   if (tree_view->priv->auto_expand_timeout != 0)
3163     {
3164       g_source_remove (tree_view->priv->auto_expand_timeout);
3165       tree_view->priv->auto_expand_timeout = 0;
3166     }
3167 }
3168
3169 static void
3170 do_prelight (GtkTreeView *tree_view,
3171              GtkRBTree   *tree,
3172              GtkRBNode   *node,
3173              /* these are in bin_window coords */
3174              gint         x,
3175              gint         y)
3176 {
3177   if (tree_view->priv->prelight_tree == tree &&
3178       tree_view->priv->prelight_node == node)
3179     {
3180       /*  We are still on the same node,
3181           but we might need to take care of the arrow  */
3182
3183       if (tree && node && TREE_VIEW_DRAW_EXPANDERS (tree_view))
3184         {
3185           gboolean over_arrow;
3186           gboolean flag_set;
3187
3188           over_arrow = coords_are_over_arrow (tree_view, tree, node, x, y);
3189           flag_set = GTK_TREE_VIEW_FLAG_SET (tree_view,
3190                                              GTK_TREE_VIEW_ARROW_PRELIT);
3191
3192           if (over_arrow != flag_set)
3193             {
3194               if (over_arrow)
3195                 GTK_TREE_VIEW_SET_FLAG (tree_view,
3196                                         GTK_TREE_VIEW_ARROW_PRELIT);
3197               else
3198                 GTK_TREE_VIEW_UNSET_FLAG (tree_view,
3199                                           GTK_TREE_VIEW_ARROW_PRELIT);
3200
3201               gtk_tree_view_queue_draw_arrow (tree_view, tree, node);
3202             }
3203         }
3204
3205       return;
3206     }
3207
3208   if (tree_view->priv->prelight_tree && tree_view->priv->prelight_node)
3209     {
3210       /*  Unprelight the old node and arrow  */
3211
3212       GTK_RBNODE_UNSET_FLAG (tree_view->priv->prelight_node,
3213                              GTK_RBNODE_IS_PRELIT);
3214
3215       if (GTK_TREE_VIEW_FLAG_SET (tree_view, GTK_TREE_VIEW_ARROW_PRELIT)
3216           && TREE_VIEW_DRAW_EXPANDERS (tree_view))
3217         {
3218           GTK_TREE_VIEW_UNSET_FLAG (tree_view, GTK_TREE_VIEW_ARROW_PRELIT);
3219
3220           gtk_tree_view_queue_draw_arrow (tree_view,
3221                                           tree_view->priv->prelight_tree,
3222                                           tree_view->priv->prelight_node);
3223         }
3224
3225       _gtk_tree_view_queue_draw_node (tree_view,
3226                                       tree_view->priv->prelight_tree,
3227                                       tree_view->priv->prelight_node,
3228                                       NULL);
3229     }
3230
3231
3232   if (tree_view->priv->hover_expand)
3233     remove_auto_expand_timeout (tree_view);
3234
3235   /*  Set the new prelight values  */
3236   tree_view->priv->prelight_node = node;
3237   tree_view->priv->prelight_tree = tree;
3238
3239   if (!node || !tree)
3240     return;
3241
3242   /*  Prelight the new node and arrow  */
3243
3244   if (TREE_VIEW_DRAW_EXPANDERS (tree_view)
3245       && coords_are_over_arrow (tree_view, tree, node, x, y))
3246     {
3247       GTK_TREE_VIEW_SET_FLAG (tree_view, GTK_TREE_VIEW_ARROW_PRELIT);
3248
3249       gtk_tree_view_queue_draw_arrow (tree_view, tree, node);
3250     }
3251
3252   GTK_RBNODE_SET_FLAG (node, GTK_RBNODE_IS_PRELIT);
3253
3254   _gtk_tree_view_queue_draw_node (tree_view, tree, node, NULL);
3255
3256   if (tree_view->priv->hover_expand)
3257     {
3258       tree_view->priv->auto_expand_timeout =
3259         gdk_threads_add_timeout (AUTO_EXPAND_TIMEOUT, auto_expand_timeout, tree_view);
3260     }
3261 }
3262
3263 static void
3264 prelight_or_select (GtkTreeView *tree_view,
3265                     GtkRBTree   *tree,
3266                     GtkRBNode   *node,
3267                     /* these are in bin_window coords */
3268                     gint         x,
3269                     gint         y)
3270 {
3271   GtkSelectionMode mode = gtk_tree_selection_get_mode (tree_view->priv->selection);
3272
3273   if (tree_view->priv->hover_selection &&
3274       (mode == GTK_SELECTION_SINGLE || mode == GTK_SELECTION_BROWSE) &&
3275       !(tree_view->priv->edited_column &&
3276         tree_view->priv->edited_column->editable_widget))
3277     {
3278       if (node)
3279         {
3280           if (!GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_SELECTED))
3281             {
3282               GtkTreePath *path;
3283
3284               path = _gtk_tree_view_find_path (tree_view, tree, node);
3285               gtk_tree_selection_select_path (tree_view->priv->selection, path);
3286               if (GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_SELECTED))
3287                 {
3288                   GTK_TREE_VIEW_UNSET_FLAG (tree_view, GTK_TREE_VIEW_DRAW_KEYFOCUS);
3289                   gtk_tree_view_real_set_cursor (tree_view, path, FALSE, FALSE);
3290                 }
3291               gtk_tree_path_free (path);
3292             }
3293         }
3294
3295       else if (mode == GTK_SELECTION_SINGLE)
3296         gtk_tree_selection_unselect_all (tree_view->priv->selection);
3297     }
3298
3299     do_prelight (tree_view, tree, node, x, y);
3300 }
3301
3302 static void
3303 ensure_unprelighted (GtkTreeView *tree_view)
3304 {
3305   do_prelight (tree_view,
3306                NULL, NULL,
3307                -1000, -1000); /* coords not possibly over an arrow */
3308
3309   g_assert (tree_view->priv->prelight_node == NULL);
3310 }
3311
3312 static void
3313 update_prelight (GtkTreeView *tree_view,
3314                  gint         x,
3315                  gint         y)
3316 {
3317   int new_y;
3318   GtkRBTree *tree;
3319   GtkRBNode *node;
3320
3321   if (tree_view->priv->tree == NULL)
3322     return;
3323
3324   if (x == -10000)
3325     {
3326       ensure_unprelighted (tree_view);
3327       return;
3328     }
3329
3330   new_y = TREE_WINDOW_Y_TO_RBTREE_Y (tree_view, y);
3331   if (new_y < 0)
3332     new_y = 0;
3333
3334   _gtk_rbtree_find_offset (tree_view->priv->tree,
3335                            new_y, &tree, &node);
3336
3337   if (node)
3338     prelight_or_select (tree_view, tree, node, x, y);
3339 }
3340
3341
3342
3343
3344 /* Our motion arrow is either a box (in the case of the original spot)
3345  * or an arrow.  It is expander_size wide.
3346  */
3347 /*
3348  * 11111111111111
3349  * 01111111111110
3350  * 00111111111100
3351  * 00011111111000
3352  * 00001111110000
3353  * 00000111100000
3354  * 00000111100000
3355  * 00000111100000
3356  * ~ ~ ~ ~ ~ ~ ~
3357  * 00000111100000
3358  * 00000111100000
3359  * 00000111100000
3360  * 00001111110000
3361  * 00011111111000
3362  * 00111111111100
3363  * 01111111111110
3364  * 11111111111111
3365  */
3366
3367 static void
3368 gtk_tree_view_motion_draw_column_motion_arrow (GtkTreeView *tree_view)
3369 {
3370   GtkTreeViewColumnReorder *reorder = tree_view->priv->cur_reorder;
3371   GtkWidget *widget = GTK_WIDGET (tree_view);
3372   cairo_surface_t *mask_image;
3373   cairo_region_t *mask_region;
3374   gint x;
3375   gint y;
3376   gint width;
3377   gint height;
3378   gint arrow_type = DRAG_COLUMN_WINDOW_STATE_UNSET;
3379   GdkWindowAttr attributes;
3380   guint attributes_mask;
3381   cairo_t *cr;
3382
3383   if (!reorder ||
3384       reorder->left_column == tree_view->priv->drag_column ||
3385       reorder->right_column == tree_view->priv->drag_column)
3386     arrow_type = DRAG_COLUMN_WINDOW_STATE_ORIGINAL;
3387   else if (reorder->left_column || reorder->right_column)
3388     {
3389       GtkAllocation left_allocation, right_allocation;
3390       GdkRectangle visible_rect;
3391
3392       gtk_tree_view_get_visible_rect (tree_view, &visible_rect);
3393       if (reorder->left_column)
3394         {
3395           gtk_widget_get_allocation (reorder->left_column->button, &left_allocation);
3396           x = left_allocation.x + left_allocation.width;
3397         }
3398       else
3399         {
3400           gtk_widget_get_allocation (reorder->right_column->button, &right_allocation);
3401           x = right_allocation.x;
3402         }
3403
3404       if (x < visible_rect.x)
3405         arrow_type = DRAG_COLUMN_WINDOW_STATE_ARROW_LEFT;
3406       else if (x > visible_rect.x + visible_rect.width)
3407         arrow_type = DRAG_COLUMN_WINDOW_STATE_ARROW_RIGHT;
3408       else
3409         arrow_type = DRAG_COLUMN_WINDOW_STATE_ARROW;
3410     }
3411
3412   /* We want to draw the rectangle over the initial location. */
3413   if (arrow_type == DRAG_COLUMN_WINDOW_STATE_ORIGINAL)
3414     {
3415       if (tree_view->priv->drag_column_window_state != DRAG_COLUMN_WINDOW_STATE_ORIGINAL)
3416         {
3417           GtkAllocation drag_allocation;
3418
3419           if (tree_view->priv->drag_highlight_window)
3420             {
3421               gdk_window_set_user_data (tree_view->priv->drag_highlight_window,
3422                                         NULL);
3423               gdk_window_destroy (tree_view->priv->drag_highlight_window);
3424             }
3425
3426           attributes.window_type = GDK_WINDOW_CHILD;
3427           attributes.wclass = GDK_INPUT_OUTPUT;
3428           attributes.x = tree_view->priv->drag_column_x;
3429           attributes.y = 0;
3430           gtk_widget_get_allocation (tree_view->priv->drag_column->button, &drag_allocation);
3431           width = attributes.width = drag_allocation.width;
3432           height = attributes.height = drag_allocation.height;
3433           attributes.visual = gtk_widget_get_visual (GTK_WIDGET (tree_view));
3434           attributes.event_mask = GDK_VISIBILITY_NOTIFY_MASK | GDK_EXPOSURE_MASK | GDK_POINTER_MOTION_MASK;
3435           attributes_mask = GDK_WA_X | GDK_WA_Y | GDK_WA_VISUAL;
3436           tree_view->priv->drag_highlight_window = gdk_window_new (tree_view->priv->header_window, &attributes, attributes_mask);
3437           gdk_window_set_user_data (tree_view->priv->drag_highlight_window, GTK_WIDGET (tree_view));
3438
3439           mask_image = cairo_image_surface_create (CAIRO_FORMAT_A1, width, height);
3440           cr = cairo_create (mask_image);
3441
3442           cairo_rectangle (cr, 1, 1, width - 2, height - 2);
3443           cairo_stroke (cr);
3444           cairo_destroy (cr);
3445
3446           mask_region = gdk_cairo_region_create_from_surface (mask_image);
3447           gdk_window_shape_combine_region (tree_view->priv->drag_highlight_window,
3448                                            mask_region, 0, 0);
3449
3450           cairo_region_destroy (mask_region);
3451           cairo_surface_destroy (mask_image);
3452
3453           tree_view->priv->drag_column_window_state = DRAG_COLUMN_WINDOW_STATE_ORIGINAL;
3454         }
3455     }
3456   else if (arrow_type == DRAG_COLUMN_WINDOW_STATE_ARROW)
3457     {
3458       GtkAllocation button_allocation;
3459
3460       width = tree_view->priv->expander_size;
3461
3462       /* Get x, y, width, height of arrow */
3463       gdk_window_get_origin (tree_view->priv->header_window, &x, &y);
3464       if (reorder->left_column)
3465         {
3466           gtk_widget_get_allocation (reorder->left_column->button, &button_allocation);
3467           x += button_allocation.x + button_allocation.width - width/2;
3468           height = button_allocation.height;
3469         }
3470       else
3471         {
3472           gtk_widget_get_allocation (reorder->right_column->button, &button_allocation);
3473           x += button_allocation.x - width/2;
3474           height = button_allocation.height;
3475         }
3476       y -= tree_view->priv->expander_size/2; /* The arrow takes up only half the space */
3477       height += tree_view->priv->expander_size;
3478
3479       /* Create the new window */
3480       if (tree_view->priv->drag_column_window_state != DRAG_COLUMN_WINDOW_STATE_ARROW)
3481         {
3482           if (tree_view->priv->drag_highlight_window)
3483             {
3484               gdk_window_set_user_data (tree_view->priv->drag_highlight_window,
3485                                         NULL);
3486               gdk_window_destroy (tree_view->priv->drag_highlight_window);
3487             }
3488
3489           attributes.window_type = GDK_WINDOW_TEMP;
3490           attributes.wclass = GDK_INPUT_OUTPUT;
3491           attributes.visual = gtk_widget_get_visual (GTK_WIDGET (tree_view));
3492           attributes.event_mask = GDK_VISIBILITY_NOTIFY_MASK | GDK_EXPOSURE_MASK | GDK_POINTER_MOTION_MASK;
3493           attributes_mask = GDK_WA_X | GDK_WA_Y | GDK_WA_VISUAL;
3494           attributes.x = x;
3495           attributes.y = y;
3496           attributes.width = width;
3497           attributes.height = height;
3498           tree_view->priv->drag_highlight_window = gdk_window_new (gtk_widget_get_root_window (widget),
3499                                                                    &attributes, attributes_mask);
3500           gdk_window_set_user_data (tree_view->priv->drag_highlight_window, GTK_WIDGET (tree_view));
3501
3502           mask_image = cairo_image_surface_create (CAIRO_FORMAT_A1, width, height);
3503
3504           cr = cairo_create (mask_image);
3505           cairo_move_to (cr, 0, 0);
3506           cairo_line_to (cr, width, 0);
3507           cairo_line_to (cr, width / 2., width / 2);
3508           cairo_move_to (cr, 0, height);
3509           cairo_line_to (cr, width, height);
3510           cairo_line_to (cr, width / 2., height - width / 2.);
3511           cairo_fill (cr);
3512           cairo_destroy (cr);
3513
3514           mask_region = gdk_cairo_region_create_from_surface (mask_image);
3515           gdk_window_shape_combine_region (tree_view->priv->drag_highlight_window,
3516                                            mask_region, 0, 0);
3517
3518           cairo_region_destroy (mask_region);
3519           cairo_surface_destroy (mask_image);
3520         }
3521
3522       tree_view->priv->drag_column_window_state = DRAG_COLUMN_WINDOW_STATE_ARROW;
3523       gdk_window_move (tree_view->priv->drag_highlight_window, x, y);
3524     }
3525   else if (arrow_type == DRAG_COLUMN_WINDOW_STATE_ARROW_LEFT ||
3526            arrow_type == DRAG_COLUMN_WINDOW_STATE_ARROW_RIGHT)
3527     {
3528       GtkAllocation allocation;
3529
3530       width = tree_view->priv->expander_size;
3531
3532       /* Get x, y, width, height of arrow */
3533       width = width/2; /* remember, the arrow only takes half the available width */
3534       gdk_window_get_origin (gtk_widget_get_window (widget),
3535                              &x, &y);
3536       if (arrow_type == DRAG_COLUMN_WINDOW_STATE_ARROW_RIGHT)
3537         {
3538           gtk_widget_get_allocation (widget, &allocation);
3539           x += allocation.width - width;
3540         }
3541
3542       if (reorder->left_column)
3543         {
3544           gtk_widget_get_allocation (reorder->left_column->button, &allocation);
3545           height = allocation.height;
3546         }
3547       else
3548         {
3549           gtk_widget_get_allocation (reorder->right_column->button, &allocation);
3550           height = allocation.height;
3551         }
3552
3553       y -= tree_view->priv->expander_size;
3554       height += 2*tree_view->priv->expander_size;
3555
3556       /* Create the new window */
3557       if (tree_view->priv->drag_column_window_state != DRAG_COLUMN_WINDOW_STATE_ARROW_LEFT &&
3558           tree_view->priv->drag_column_window_state != DRAG_COLUMN_WINDOW_STATE_ARROW_RIGHT)
3559         {
3560           if (tree_view->priv->drag_highlight_window)
3561             {
3562               gdk_window_set_user_data (tree_view->priv->drag_highlight_window,
3563                                         NULL);
3564               gdk_window_destroy (tree_view->priv->drag_highlight_window);
3565             }
3566
3567           attributes.window_type = GDK_WINDOW_TEMP;
3568           attributes.wclass = GDK_INPUT_OUTPUT;
3569           attributes.visual = gtk_widget_get_visual (GTK_WIDGET (tree_view));
3570           attributes.event_mask = GDK_VISIBILITY_NOTIFY_MASK | GDK_EXPOSURE_MASK | GDK_POINTER_MOTION_MASK;
3571           attributes_mask = GDK_WA_X | GDK_WA_Y | GDK_WA_VISUAL;
3572           attributes.x = x;
3573           attributes.y = y;
3574           attributes.width = width;
3575           attributes.height = height;
3576           tree_view->priv->drag_highlight_window = gdk_window_new (NULL, &attributes, attributes_mask);
3577           gdk_window_set_user_data (tree_view->priv->drag_highlight_window, GTK_WIDGET (tree_view));
3578
3579           mask_image = cairo_image_surface_create (CAIRO_FORMAT_A1, width, height);
3580
3581           cr = cairo_create (mask_image);
3582           /* mirror if we're on the left */
3583           if (arrow_type == DRAG_COLUMN_WINDOW_STATE_ARROW_LEFT)
3584             {
3585               cairo_translate (cr, width, 0);
3586               cairo_scale (cr, -1, 1);
3587             }
3588           cairo_move_to (cr, 0, 0);
3589           cairo_line_to (cr, width, width);
3590           cairo_line_to (cr, 0, tree_view->priv->expander_size);
3591           cairo_move_to (cr, 0, height);
3592           cairo_line_to (cr, width, height - width);
3593           cairo_line_to (cr, 0, height - tree_view->priv->expander_size);
3594           cairo_fill (cr);
3595           cairo_destroy (cr);
3596
3597           mask_region = gdk_cairo_region_create_from_surface (mask_image);
3598           gdk_window_shape_combine_region (tree_view->priv->drag_highlight_window,
3599                                            mask_region, 0, 0);
3600
3601           cairo_region_destroy (mask_region);
3602           cairo_surface_destroy (mask_image);
3603         }
3604
3605       tree_view->priv->drag_column_window_state = arrow_type;
3606       gdk_window_move (tree_view->priv->drag_highlight_window, x, y);
3607    }
3608   else
3609     {
3610       g_warning (G_STRLOC"Invalid GtkTreeViewColumnReorder struct");
3611       gdk_window_hide (tree_view->priv->drag_highlight_window);
3612       return;
3613     }
3614
3615   gdk_window_show (tree_view->priv->drag_highlight_window);
3616   gdk_window_raise (tree_view->priv->drag_highlight_window);
3617 }
3618
3619 static gboolean
3620 gtk_tree_view_motion_resize_column (GtkWidget      *widget,
3621                                     GdkEventMotion *event)
3622 {
3623   gint x;
3624   gint new_width;
3625   GtkTreeViewColumn *column;
3626   GtkTreeView *tree_view = GTK_TREE_VIEW (widget);
3627
3628   column = gtk_tree_view_get_column (tree_view, tree_view->priv->drag_pos);
3629
3630   if (event->is_hint || event->window != gtk_widget_get_window (widget))
3631     gtk_widget_get_pointer (widget, &x, NULL);
3632   else
3633     x = event->x;
3634
3635   if (tree_view->priv->hadjustment)
3636     x += tree_view->priv->hadjustment->value;
3637
3638   new_width = gtk_tree_view_new_column_width (tree_view,
3639                                               tree_view->priv->drag_pos, &x);
3640   if (x != tree_view->priv->x_drag &&
3641       (new_width != column->fixed_width))
3642     {
3643       column->use_resized_width = TRUE;
3644       column->resized_width = new_width;
3645       if (column->expand)
3646         column->resized_width -= tree_view->priv->last_extra_space_per_column;
3647       gtk_widget_queue_resize (widget);
3648     }
3649
3650   return FALSE;
3651 }
3652
3653
3654 static void
3655 gtk_tree_view_update_current_reorder (GtkTreeView *tree_view)
3656 {
3657   GtkTreeViewColumnReorder *reorder = NULL;
3658   GList *list;
3659   gint mouse_x;
3660
3661   gdk_window_get_pointer (tree_view->priv->header_window, &mouse_x, NULL, NULL);
3662   for (list = tree_view->priv->column_drag_info; list; list = list->next)
3663     {
3664       reorder = (GtkTreeViewColumnReorder *) list->data;
3665       if (mouse_x >= reorder->left_align && mouse_x < reorder->right_align)
3666         break;
3667       reorder = NULL;
3668     }
3669
3670   /*  if (reorder && reorder == tree_view->priv->cur_reorder)
3671       return;*/
3672
3673   tree_view->priv->cur_reorder = reorder;
3674   gtk_tree_view_motion_draw_column_motion_arrow (tree_view);
3675 }
3676
3677 static void
3678 gtk_tree_view_vertical_autoscroll (GtkTreeView *tree_view)
3679 {
3680   GdkRectangle visible_rect;
3681   gint y;
3682   gint offset;
3683
3684   gdk_window_get_pointer (tree_view->priv->bin_window, NULL, &y, NULL);
3685   y += tree_view->priv->dy;
3686
3687   gtk_tree_view_get_visible_rect (tree_view, &visible_rect);
3688
3689   /* see if we are near the edge. */
3690   offset = y - (visible_rect.y + 2 * SCROLL_EDGE_SIZE);
3691   if (offset > 0)
3692     {
3693       offset = y - (visible_rect.y + visible_rect.height - 2 * SCROLL_EDGE_SIZE);
3694       if (offset < 0)
3695         return;
3696     }
3697
3698   gtk_adjustment_set_value (tree_view->priv->vadjustment,
3699                             MAX (tree_view->priv->vadjustment->value + offset, 0.0));
3700 }
3701
3702 static gboolean
3703 gtk_tree_view_horizontal_autoscroll (GtkTreeView *tree_view)
3704 {
3705   GdkRectangle visible_rect;
3706   gint x;
3707   gint offset;
3708
3709   gdk_window_get_pointer (tree_view->priv->bin_window, &x, NULL, NULL);
3710
3711   gtk_tree_view_get_visible_rect (tree_view, &visible_rect);
3712
3713   /* See if we are near the edge. */
3714   offset = x - (visible_rect.x + SCROLL_EDGE_SIZE);
3715   if (offset > 0)
3716     {
3717       offset = x - (visible_rect.x + visible_rect.width - SCROLL_EDGE_SIZE);
3718       if (offset < 0)
3719         return TRUE;
3720     }
3721   offset = offset/3;
3722
3723   gtk_adjustment_set_value (tree_view->priv->hadjustment,
3724                             MAX (tree_view->priv->hadjustment->value + offset, 0.0));
3725
3726   return TRUE;
3727
3728 }
3729
3730 static gboolean
3731 gtk_tree_view_motion_drag_column (GtkWidget      *widget,
3732                                   GdkEventMotion *event)
3733 {
3734   GtkAllocation allocation, button_allocation;
3735   GtkTreeView *tree_view = (GtkTreeView *) widget;
3736   GtkTreeViewColumn *column = tree_view->priv->drag_column;
3737   gint x, y;
3738
3739   /* Sanity Check */
3740   if ((column == NULL) ||
3741       (event->window != tree_view->priv->drag_window))
3742     return FALSE;
3743
3744   /* Handle moving the header */
3745   gdk_window_get_position (tree_view->priv->drag_window, &x, &y);
3746   gtk_widget_get_allocation (widget, &allocation);
3747   gtk_widget_get_allocation (column->button, &button_allocation);
3748   x = CLAMP (x + (gint)event->x - column->drag_x, 0,
3749              MAX (tree_view->priv->width, allocation.width) - button_allocation.width);
3750   gdk_window_move (tree_view->priv->drag_window, x, y);
3751
3752   /* autoscroll, if needed */
3753   gtk_tree_view_horizontal_autoscroll (tree_view);
3754   /* Update the current reorder position and arrow; */
3755   gtk_tree_view_update_current_reorder (tree_view);
3756
3757   return TRUE;
3758 }
3759
3760 static void
3761 gtk_tree_view_stop_rubber_band (GtkTreeView *tree_view)
3762 {
3763   remove_scroll_timeout (tree_view);
3764   gtk_grab_remove (GTK_WIDGET (tree_view));
3765
3766   if (tree_view->priv->rubber_band_status == RUBBER_BAND_ACTIVE)
3767     {
3768       GtkTreePath *tmp_path;
3769
3770       gtk_widget_queue_draw (GTK_WIDGET (tree_view));
3771
3772       /* The anchor path should be set to the start path */
3773       tmp_path = _gtk_tree_view_find_path (tree_view,
3774                                            tree_view->priv->rubber_band_start_tree,
3775                                            tree_view->priv->rubber_band_start_node);
3776
3777       if (tree_view->priv->anchor)
3778         gtk_tree_row_reference_free (tree_view->priv->anchor);
3779
3780       tree_view->priv->anchor =
3781         gtk_tree_row_reference_new_proxy (G_OBJECT (tree_view),
3782                                           tree_view->priv->model,
3783                                           tmp_path);
3784
3785       gtk_tree_path_free (tmp_path);
3786
3787       /* ... and the cursor to the end path */
3788       tmp_path = _gtk_tree_view_find_path (tree_view,
3789                                            tree_view->priv->rubber_band_end_tree,
3790                                            tree_view->priv->rubber_band_end_node);
3791       gtk_tree_view_real_set_cursor (GTK_TREE_VIEW (tree_view), tmp_path, FALSE, FALSE);
3792       gtk_tree_path_free (tmp_path);
3793
3794       _gtk_tree_selection_emit_changed (tree_view->priv->selection);
3795     }
3796
3797   /* Clear status variables */
3798   tree_view->priv->rubber_band_status = RUBBER_BAND_OFF;
3799   tree_view->priv->rubber_band_shift = 0;
3800   tree_view->priv->rubber_band_ctrl = 0;
3801
3802   tree_view->priv->rubber_band_start_node = NULL;
3803   tree_view->priv->rubber_band_start_tree = NULL;
3804   tree_view->priv->rubber_band_end_node = NULL;
3805   tree_view->priv->rubber_band_end_tree = NULL;
3806 }
3807
3808 static void
3809 gtk_tree_view_update_rubber_band_selection_range (GtkTreeView *tree_view,
3810                                                  GtkRBTree   *start_tree,
3811                                                  GtkRBNode   *start_node,
3812                                                  GtkRBTree   *end_tree,
3813                                                  GtkRBNode   *end_node,
3814                                                  gboolean     select,
3815                                                  gboolean     skip_start,
3816                                                  gboolean     skip_end)
3817 {
3818   if (start_node == end_node)
3819     return;
3820
3821   /* We skip the first node and jump inside the loop */
3822   if (skip_start)
3823     goto skip_first;
3824
3825   do
3826     {
3827       /* Small optimization by assuming insensitive nodes are never
3828        * selected.
3829        */
3830       if (!GTK_RBNODE_FLAG_SET (start_node, GTK_RBNODE_IS_SELECTED))
3831         {
3832           GtkTreePath *path;
3833           gboolean selectable;
3834
3835           path = _gtk_tree_view_find_path (tree_view, start_tree, start_node);
3836           selectable = _gtk_tree_selection_row_is_selectable (tree_view->priv->selection, start_node, path);
3837           gtk_tree_path_free (path);
3838
3839           if (!selectable)
3840             goto node_not_selectable;
3841         }
3842
3843       if (select)
3844         {
3845           if (tree_view->priv->rubber_band_shift)
3846             GTK_RBNODE_SET_FLAG (start_node, GTK_RBNODE_IS_SELECTED);
3847           else if (tree_view->priv->rubber_band_ctrl)
3848             {
3849               /* Toggle the selection state */
3850               if (GTK_RBNODE_FLAG_SET (start_node, GTK_RBNODE_IS_SELECTED))
3851                 GTK_RBNODE_UNSET_FLAG (start_node, GTK_RBNODE_IS_SELECTED);
3852               else
3853                 GTK_RBNODE_SET_FLAG (start_node, GTK_RBNODE_IS_SELECTED);
3854             }
3855           else
3856             GTK_RBNODE_SET_FLAG (start_node, GTK_RBNODE_IS_SELECTED);
3857         }
3858       else
3859         {
3860           /* Mirror the above */
3861           if (tree_view->priv->rubber_band_shift)
3862             GTK_RBNODE_UNSET_FLAG (start_node, GTK_RBNODE_IS_SELECTED);
3863           else if (tree_view->priv->rubber_band_ctrl)
3864             {
3865               /* Toggle the selection state */
3866               if (GTK_RBNODE_FLAG_SET (start_node, GTK_RBNODE_IS_SELECTED))
3867                 GTK_RBNODE_UNSET_FLAG (start_node, GTK_RBNODE_IS_SELECTED);
3868               else
3869                 GTK_RBNODE_SET_FLAG (start_node, GTK_RBNODE_IS_SELECTED);
3870             }
3871           else
3872             GTK_RBNODE_UNSET_FLAG (start_node, GTK_RBNODE_IS_SELECTED);
3873         }
3874
3875       _gtk_tree_view_queue_draw_node (tree_view, start_tree, start_node, NULL);
3876
3877 node_not_selectable:
3878       if (start_node == end_node)
3879         break;
3880
3881 skip_first:
3882
3883       if (start_node->children)
3884         {
3885           start_tree = start_node->children;
3886           start_node = start_tree->root;
3887           while (start_node->left != start_tree->nil)
3888             start_node = start_node->left;
3889         }
3890       else
3891         {
3892           _gtk_rbtree_next_full (start_tree, start_node, &start_tree, &start_node);
3893
3894           if (!start_tree)
3895             /* Ran out of tree */
3896             break;
3897         }
3898
3899       if (skip_end && start_node == end_node)
3900         break;
3901     }
3902   while (TRUE);
3903 }
3904
3905 static void
3906 gtk_tree_view_update_rubber_band_selection (GtkTreeView *tree_view)
3907 {
3908   GtkRBTree *start_tree, *end_tree;
3909   GtkRBNode *start_node, *end_node;
3910
3911   _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);
3912   _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);
3913
3914   /* Handle the start area first */
3915   if (!tree_view->priv->rubber_band_start_node)
3916     {
3917       gtk_tree_view_update_rubber_band_selection_range (tree_view,
3918                                                        start_tree,
3919                                                        start_node,
3920                                                        end_tree,
3921                                                        end_node,
3922                                                        TRUE,
3923                                                        FALSE,
3924                                                        FALSE);
3925     }
3926   else if (_gtk_rbtree_node_find_offset (start_tree, start_node) <
3927            _gtk_rbtree_node_find_offset (tree_view->priv->rubber_band_start_tree, tree_view->priv->rubber_band_start_node))
3928     {
3929       /* New node is above the old one; selection became bigger */
3930       gtk_tree_view_update_rubber_band_selection_range (tree_view,
3931                                                        start_tree,
3932                                                        start_node,
3933                                                        tree_view->priv->rubber_band_start_tree,
3934                                                        tree_view->priv->rubber_band_start_node,
3935                                                        TRUE,
3936                                                        FALSE,
3937                                                        TRUE);
3938     }
3939   else if (_gtk_rbtree_node_find_offset (start_tree, start_node) >
3940            _gtk_rbtree_node_find_offset (tree_view->priv->rubber_band_start_tree, tree_view->priv->rubber_band_start_node))
3941     {
3942       /* New node is below the old one; selection became smaller */
3943       gtk_tree_view_update_rubber_band_selection_range (tree_view,
3944                                                        tree_view->priv->rubber_band_start_tree,
3945                                                        tree_view->priv->rubber_band_start_node,
3946                                                        start_tree,
3947                                                        start_node,
3948                                                        FALSE,
3949                                                        FALSE,
3950                                                        TRUE);
3951     }
3952
3953   tree_view->priv->rubber_band_start_tree = start_tree;
3954   tree_view->priv->rubber_band_start_node = start_node;
3955
3956   /* Next, handle the end area */
3957   if (!tree_view->priv->rubber_band_end_node)
3958     {
3959       /* In the event this happens, start_node was also NULL; this case is
3960        * handled above.
3961        */
3962     }
3963   else if (!end_node)
3964     {
3965       /* Find the last node in the tree */
3966       _gtk_rbtree_find_offset (tree_view->priv->tree, tree_view->priv->height - 1,
3967                                &end_tree, &end_node);
3968
3969       /* Selection reached end of the tree */
3970       gtk_tree_view_update_rubber_band_selection_range (tree_view,
3971                                                        tree_view->priv->rubber_band_end_tree,
3972                                                        tree_view->priv->rubber_band_end_node,
3973                                                        end_tree,
3974                                                        end_node,
3975                                                        TRUE,
3976                                                        TRUE,
3977                                                        FALSE);
3978     }
3979   else if (_gtk_rbtree_node_find_offset (end_tree, end_node) >
3980            _gtk_rbtree_node_find_offset (tree_view->priv->rubber_band_end_tree, tree_view->priv->rubber_band_end_node))
3981     {
3982       /* New node is below the old one; selection became bigger */
3983       gtk_tree_view_update_rubber_band_selection_range (tree_view,
3984                                                        tree_view->priv->rubber_band_end_tree,
3985                                                        tree_view->priv->rubber_band_end_node,
3986                                                        end_tree,
3987                                                        end_node,
3988                                                        TRUE,
3989                                                        TRUE,
3990                                                        FALSE);
3991     }
3992   else if (_gtk_rbtree_node_find_offset (end_tree, end_node) <
3993            _gtk_rbtree_node_find_offset (tree_view->priv->rubber_band_end_tree, tree_view->priv->rubber_band_end_node))
3994     {
3995       /* New node is above the old one; selection became smaller */
3996       gtk_tree_view_update_rubber_band_selection_range (tree_view,
3997                                                        end_tree,
3998                                                        end_node,
3999                                                        tree_view->priv->rubber_band_end_tree,
4000                                                        tree_view->priv->rubber_band_end_node,
4001                                                        FALSE,
4002                                                        TRUE,
4003                                                        FALSE);
4004     }
4005
4006   tree_view->priv->rubber_band_end_tree = end_tree;
4007   tree_view->priv->rubber_band_end_node = end_node;
4008 }
4009
4010 static void
4011 gtk_tree_view_update_rubber_band (GtkTreeView *tree_view)
4012 {
4013   gint x, y;
4014   GdkRectangle old_area;
4015   GdkRectangle new_area;
4016   GdkRectangle common;
4017   cairo_region_t *invalid_region;
4018
4019   old_area.x = MIN (tree_view->priv->press_start_x, tree_view->priv->rubber_band_x);
4020   old_area.y = MIN (tree_view->priv->press_start_y, tree_view->priv->rubber_band_y) - tree_view->priv->dy;
4021   old_area.width = ABS (tree_view->priv->rubber_band_x - tree_view->priv->press_start_x) + 1;
4022   old_area.height = ABS (tree_view->priv->rubber_band_y - tree_view->priv->press_start_y) + 1;
4023
4024   gdk_window_get_pointer (tree_view->priv->bin_window, &x, &y, NULL);
4025
4026   x = MAX (x, 0);
4027   y = MAX (y, 0) + tree_view->priv->dy;
4028
4029   new_area.x = MIN (tree_view->priv->press_start_x, x);
4030   new_area.y = MIN (tree_view->priv->press_start_y, y) - tree_view->priv->dy;
4031   new_area.width = ABS (x - tree_view->priv->press_start_x) + 1;
4032   new_area.height = ABS (y - tree_view->priv->press_start_y) + 1;
4033
4034   invalid_region = cairo_region_create_rectangle (&old_area);
4035   cairo_region_union_rectangle (invalid_region, &new_area);
4036
4037   gdk_rectangle_intersect (&old_area, &new_area, &common);
4038   if (common.width > 2 && common.height > 2)
4039     {
4040       cairo_region_t *common_region;
4041
4042       /* make sure the border is invalidated */
4043       common.x += 1;
4044       common.y += 1;
4045       common.width -= 2;
4046       common.height -= 2;
4047
4048       common_region = cairo_region_create_rectangle (&common);
4049
4050       cairo_region_subtract (invalid_region, common_region);
4051       cairo_region_destroy (common_region);
4052     }
4053
4054   gdk_window_invalidate_region (tree_view->priv->bin_window, invalid_region, TRUE);
4055
4056   cairo_region_destroy (invalid_region);
4057
4058   tree_view->priv->rubber_band_x = x;
4059   tree_view->priv->rubber_band_y = y;
4060
4061   gtk_tree_view_update_rubber_band_selection (tree_view);
4062 }
4063
4064 static void
4065 gtk_tree_view_paint_rubber_band (GtkTreeView  *tree_view,
4066                                  cairo_t      *cr)
4067 {
4068   GdkRectangle rect;
4069   GtkStyle *style;
4070
4071   cairo_save (cr);
4072
4073   rect.x = MIN (tree_view->priv->press_start_x, tree_view->priv->rubber_band_x);
4074   rect.y = MIN (tree_view->priv->press_start_y, tree_view->priv->rubber_band_y) - tree_view->priv->dy;
4075   rect.width = ABS (tree_view->priv->press_start_x - tree_view->priv->rubber_band_x) + 1;
4076   rect.height = ABS (tree_view->priv->press_start_y - tree_view->priv->rubber_band_y) + 1;
4077
4078   cairo_set_line_width (cr, 1.0);
4079
4080   style = gtk_widget_get_style (GTK_WIDGET (tree_view));
4081
4082   gdk_cairo_set_source_color (cr, &style->fg[GTK_STATE_NORMAL]);
4083
4084   gdk_cairo_rectangle (cr, &rect);
4085   cairo_clip (cr);
4086   cairo_paint_with_alpha (cr, 0.25);
4087
4088   cairo_rectangle (cr,
4089                    rect.x + 0.5, rect.y + 0.5,
4090                    rect.width - 1, rect.height - 1);
4091   cairo_stroke (cr);
4092
4093   cairo_restore (cr);
4094 }
4095
4096 static gboolean
4097 gtk_tree_view_motion_bin_window (GtkWidget      *widget,
4098                                  GdkEventMotion *event)
4099 {
4100   GtkTreeView *tree_view;
4101   GtkRBTree *tree;
4102   GtkRBNode *node;
4103   gint new_y;
4104
4105   tree_view = (GtkTreeView *) widget;
4106
4107   if (tree_view->priv->tree == NULL)
4108     return FALSE;
4109
4110   if (tree_view->priv->rubber_band_status == RUBBER_BAND_MAYBE_START)
4111     {
4112       gtk_grab_add (GTK_WIDGET (tree_view));
4113       gtk_tree_view_update_rubber_band (tree_view);
4114
4115       tree_view->priv->rubber_band_status = RUBBER_BAND_ACTIVE;
4116     }
4117   else if (tree_view->priv->rubber_band_status == RUBBER_BAND_ACTIVE)
4118     {
4119       gtk_tree_view_update_rubber_band (tree_view);
4120
4121       add_scroll_timeout (tree_view);
4122     }
4123
4124   /* only check for an initiated drag when a button is pressed */
4125   if (tree_view->priv->pressed_button >= 0
4126       && !tree_view->priv->rubber_band_status)
4127     gtk_tree_view_maybe_begin_dragging_row (tree_view, event);
4128
4129   new_y = TREE_WINDOW_Y_TO_RBTREE_Y(tree_view, event->y);
4130   if (new_y < 0)
4131     new_y = 0;
4132
4133   _gtk_rbtree_find_offset (tree_view->priv->tree, new_y, &tree, &node);
4134
4135   /* If we are currently pressing down a button, we don't want to prelight anything else. */
4136   if ((tree_view->priv->button_pressed_node != NULL) &&
4137       (tree_view->priv->button_pressed_node != node))
4138     node = NULL;
4139
4140   tree_view->priv->event_last_x = event->x;
4141   tree_view->priv->event_last_y = event->y;
4142
4143   prelight_or_select (tree_view, tree, node, event->x, event->y);
4144
4145   return TRUE;
4146 }
4147
4148 static gboolean
4149 gtk_tree_view_motion (GtkWidget      *widget,
4150                       GdkEventMotion *event)
4151 {
4152   GtkTreeView *tree_view;
4153
4154   tree_view = (GtkTreeView *) widget;
4155
4156   /* Resizing a column */
4157   if (GTK_TREE_VIEW_FLAG_SET (tree_view, GTK_TREE_VIEW_IN_COLUMN_RESIZE))
4158     return gtk_tree_view_motion_resize_column (widget, event);
4159
4160   /* Drag column */
4161   if (GTK_TREE_VIEW_FLAG_SET (tree_view, GTK_TREE_VIEW_IN_COLUMN_DRAG))
4162     return gtk_tree_view_motion_drag_column (widget, event);
4163
4164   /* Sanity check it */
4165   if (event->window == tree_view->priv->bin_window)
4166     return gtk_tree_view_motion_bin_window (widget, event);
4167
4168   return FALSE;
4169 }
4170
4171 /* Invalidate the focus rectangle near the edge of the bin_window; used when
4172  * the tree is empty.
4173  */
4174 static void
4175 invalidate_empty_focus (GtkTreeView *tree_view)
4176 {
4177   GdkRectangle area;
4178
4179   if (!gtk_widget_has_focus (GTK_WIDGET (tree_view)))
4180     return;
4181
4182   area.x = 0;
4183   area.y = 0;
4184   area.width = gdk_window_get_width (tree_view->priv->bin_window);
4185   area.height = gdk_window_get_height (tree_view->priv->bin_window);
4186   gdk_window_invalidate_rect (tree_view->priv->bin_window, &area, FALSE);
4187 }
4188
4189 /* Draws a focus rectangle near the edge of the bin_window; used when the tree
4190  * is empty.
4191  */
4192 static void
4193 draw_empty_focus (GtkTreeView *tree_view, cairo_t *cr)
4194 {
4195   GtkWidget *widget = GTK_WIDGET (tree_view);
4196   gint w, h;
4197
4198   if (!gtk_widget_has_focus (widget))
4199     return;
4200
4201   w = gdk_window_get_width (tree_view->priv->bin_window) - 2;
4202   h = gdk_window_get_height (tree_view->priv->bin_window) - 2;
4203
4204   if (w > 0 && h > 0)
4205     gtk_paint_focus (gtk_widget_get_style (widget),
4206                      cr,
4207                      gtk_widget_get_state (widget),
4208                      widget,
4209                      NULL,
4210                      1, 1, w, h);
4211 }
4212
4213 typedef enum {
4214   GTK_TREE_VIEW_GRID_LINE,
4215   GTK_TREE_VIEW_TREE_LINE,
4216   GTK_TREE_VIEW_FOREGROUND_LINE
4217 } GtkTreeViewLineType;
4218
4219 static void
4220 gtk_tree_view_draw_line (GtkTreeView         *tree_view,
4221                          cairo_t             *cr,
4222                          GtkTreeViewLineType  type,
4223                          int                  x1,
4224                          int                  y1,
4225                          int                  x2,
4226                          int                  y2)
4227 {
4228   cairo_save (cr);
4229
4230   switch (type)
4231     {
4232     case GTK_TREE_VIEW_TREE_LINE:
4233       cairo_set_source_rgb (cr, 0, 0, 0);
4234       cairo_set_line_width (cr, tree_view->priv->tree_line_width);
4235       if (tree_view->priv->tree_line_dashes[0])
4236         cairo_set_dash (cr,
4237                         tree_view->priv->tree_line_dashes,
4238                         2, 0.5);
4239       break;
4240     case GTK_TREE_VIEW_GRID_LINE:
4241       cairo_set_source_rgb (cr, 0, 0, 0);
4242       cairo_set_line_width (cr, tree_view->priv->grid_line_width);
4243       if (tree_view->priv->grid_line_dashes[0])
4244         cairo_set_dash (cr,
4245                         tree_view->priv->grid_line_dashes,
4246                         2, 0.5);
4247       break;
4248     default:
4249       g_assert_not_reached ();
4250       /* fall through */
4251     case GTK_TREE_VIEW_FOREGROUND_LINE:
4252       cairo_set_line_width (cr, 1.0);
4253       gdk_cairo_set_source_color (cr,
4254                                   &gtk_widget_get_style (GTK_WIDGET (tree_view))->fg[gtk_widget_get_state (GTK_WIDGET (tree_view))]);
4255       break;
4256     }
4257
4258   cairo_move_to (cr, x1 + 0.5, y1 + 0.5);
4259   cairo_line_to (cr, x2 + 0.5, y2 + 0.5);
4260   cairo_stroke (cr);
4261
4262   cairo_restore (cr);
4263 }
4264
4265 static void
4266 gtk_tree_view_draw_grid_lines (GtkTreeView    *tree_view,
4267                                cairo_t        *cr,
4268                                gint            n_visible_columns)
4269 {
4270   GList *list = tree_view->priv->columns;
4271   gint i = 0;
4272   gint current_x = 0;
4273
4274   if (tree_view->priv->grid_lines != GTK_TREE_VIEW_GRID_LINES_VERTICAL
4275       && tree_view->priv->grid_lines != GTK_TREE_VIEW_GRID_LINES_BOTH)
4276     return;
4277
4278   /* Only draw the lines for visible rows and columns */
4279   for (list = tree_view->priv->columns; list; list = list->next, i++)
4280     {
4281       GtkTreeViewColumn *column = list->data;
4282
4283       /* We don't want a line for the last column */
4284       if (i == n_visible_columns - 1)
4285         break;
4286
4287       if (! column->visible)
4288         continue;
4289
4290       current_x += column->width;
4291
4292       gtk_tree_view_draw_line (tree_view, cr,
4293                                GTK_TREE_VIEW_GRID_LINE,
4294                                current_x - 1, 0,
4295                                current_x - 1, tree_view->priv->height);
4296     }
4297 }
4298
4299 /* Warning: Very scary function.
4300  * Modify at your own risk
4301  *
4302  * KEEP IN SYNC WITH gtk_tree_view_create_row_drag_icon()!
4303  * FIXME: It's not...
4304  */
4305 static gboolean
4306 gtk_tree_view_bin_draw (GtkWidget      *widget,
4307                         cairo_t        *cr)
4308 {
4309   GtkTreeView *tree_view = GTK_TREE_VIEW (widget);
4310   GtkTreePath *path;
4311   GtkStyle *style;
4312   GtkRBTree *tree;
4313   GList *list;
4314   GtkRBNode *node;
4315   GtkRBNode *cursor = NULL;
4316   GtkRBTree *cursor_tree = NULL;
4317   GtkRBNode *drag_highlight = NULL;
4318   GtkRBTree *drag_highlight_tree = NULL;
4319   GtkTreeIter iter;
4320   gint new_y;
4321   gint y_offset, cell_offset;
4322   gint max_height;
4323   gint depth;
4324   GdkRectangle background_area;
4325   GdkRectangle cell_area;
4326   GdkRectangle clip;
4327   guint flags;
4328   gint highlight_x;
4329   gint expander_cell_width;
4330   gint bin_window_width;
4331   gint bin_window_height;
4332   GtkTreePath *cursor_path;
4333   GtkTreePath *drag_dest_path;
4334   GList *first_column, *last_column;
4335   gint vertical_separator;
4336   gint horizontal_separator;
4337   gint focus_line_width;
4338   gboolean allow_rules;
4339   gboolean has_special_cell;
4340   gboolean rtl;
4341   gint n_visible_columns;
4342   gint pointer_x, pointer_y;
4343   gint grid_line_width;
4344   gboolean got_pointer = FALSE;
4345   gboolean draw_vgrid_lines, draw_hgrid_lines;
4346
4347   rtl = (gtk_widget_get_direction (widget) == GTK_TEXT_DIR_RTL);
4348
4349   gtk_widget_style_get (widget,
4350                         "horizontal-separator", &horizontal_separator,
4351                         "vertical-separator", &vertical_separator,
4352                         "allow-rules", &allow_rules,
4353                         "focus-line-width", &focus_line_width,
4354                         NULL);
4355
4356   if (tree_view->priv->tree == NULL)
4357     {
4358       draw_empty_focus (tree_view, cr);
4359       return TRUE;
4360     }
4361
4362   style = gtk_widget_get_style (widget);
4363
4364   bin_window_width = gdk_window_get_width (tree_view->priv->bin_window);
4365   bin_window_height = gdk_window_get_height (tree_view->priv->bin_window);
4366   cairo_rectangle (cr, 0, 0, bin_window_width, bin_window_height);
4367   cairo_clip (cr);
4368   if (!gdk_cairo_get_clip_rectangle (cr, &clip))
4369     return TRUE;
4370
4371   new_y = TREE_WINDOW_Y_TO_RBTREE_Y (tree_view, clip.y);
4372
4373   if (new_y < 0)
4374     new_y = 0;
4375   y_offset = -_gtk_rbtree_find_offset (tree_view->priv->tree, new_y, &tree, &node);
4376
4377   if (tree_view->priv->height < bin_window_height)
4378     {
4379       gtk_paint_flat_box (style,
4380                           cr,
4381                           gtk_widget_get_state (widget),
4382                           GTK_SHADOW_NONE,
4383                           widget,
4384                           "cell_even",
4385                           0, tree_view->priv->height,
4386                           bin_window_width,
4387                           bin_window_height - tree_view->priv->height);
4388     }
4389
4390   if (node == NULL)
4391     return TRUE;
4392
4393   /* find the path for the node */
4394   path = _gtk_tree_view_find_path ((GtkTreeView *)widget,
4395                                    tree,
4396                                    node);
4397   gtk_tree_model_get_iter (tree_view->priv->model,
4398                            &iter,
4399                            path);
4400   depth = gtk_tree_path_get_depth (path);
4401   gtk_tree_path_free (path);
4402
4403   cursor_path = NULL;
4404   drag_dest_path = NULL;
4405
4406   if (tree_view->priv->cursor)
4407     cursor_path = gtk_tree_row_reference_get_path (tree_view->priv->cursor);
4408
4409   if (cursor_path)
4410     _gtk_tree_view_find_node (tree_view, cursor_path,
4411                               &cursor_tree, &cursor);
4412
4413   if (tree_view->priv->drag_dest_row)
4414     drag_dest_path = gtk_tree_row_reference_get_path (tree_view->priv->drag_dest_row);
4415
4416   if (drag_dest_path)
4417     _gtk_tree_view_find_node (tree_view, drag_dest_path,
4418                               &drag_highlight_tree, &drag_highlight);
4419
4420   draw_vgrid_lines =
4421     tree_view->priv->grid_lines == GTK_TREE_VIEW_GRID_LINES_VERTICAL
4422     || tree_view->priv->grid_lines == GTK_TREE_VIEW_GRID_LINES_BOTH;
4423   draw_hgrid_lines =
4424     tree_view->priv->grid_lines == GTK_TREE_VIEW_GRID_LINES_HORIZONTAL
4425     || tree_view->priv->grid_lines == GTK_TREE_VIEW_GRID_LINES_BOTH;
4426
4427   if (draw_vgrid_lines || draw_hgrid_lines)
4428     gtk_widget_style_get (widget, "grid-line-width", &grid_line_width, NULL);
4429
4430   n_visible_columns = 0;
4431   for (list = tree_view->priv->columns; list; list = list->next)
4432     {
4433       if (! GTK_TREE_VIEW_COLUMN (list->data)->visible)
4434         continue;
4435       n_visible_columns ++;
4436     }
4437
4438   /* Find the last column */
4439   for (last_column = g_list_last (tree_view->priv->columns);
4440        last_column && !(GTK_TREE_VIEW_COLUMN (last_column->data)->visible);
4441        last_column = last_column->prev)
4442     ;
4443
4444   /* and the first */
4445   for (first_column = g_list_first (tree_view->priv->columns);
4446        first_column && !(GTK_TREE_VIEW_COLUMN (first_column->data)->visible);
4447        first_column = first_column->next)
4448     ;
4449
4450   /* Actually process the expose event.  To do this, we want to
4451    * start at the first node of the event, and walk the tree in
4452    * order, drawing each successive node.
4453    */
4454
4455   do
4456     {
4457       gboolean parity;
4458       gboolean is_separator = FALSE;
4459       gboolean is_first = FALSE;
4460       gboolean is_last = FALSE;
4461
4462       is_separator = row_is_separator (tree_view, &iter, NULL);
4463
4464       max_height = ROW_HEIGHT (tree_view, BACKGROUND_HEIGHT (node));
4465
4466       cell_offset = 0;
4467       highlight_x = 0; /* should match x coord of first cell */
4468       expander_cell_width = 0;
4469
4470       background_area.y = y_offset + clip.y;
4471       background_area.height = max_height;
4472
4473       flags = 0;
4474
4475       if (GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_PRELIT))
4476         flags |= GTK_CELL_RENDERER_PRELIT;
4477
4478       if (GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_SELECTED))
4479         flags |= GTK_CELL_RENDERER_SELECTED;
4480
4481       parity = _gtk_rbtree_node_find_parity (tree, node);
4482
4483       /* we *need* to set cell data on all cells before the call
4484        * to _has_special_cell, else _has_special_cell() does not
4485        * return a correct value.
4486        */
4487       for (list = (rtl ? g_list_last (tree_view->priv->columns) : g_list_first (tree_view->priv->columns));
4488            list;
4489            list = (rtl ? list->prev : list->next))
4490         {
4491           GtkTreeViewColumn *column = list->data;
4492           gtk_tree_view_column_cell_set_cell_data (column,
4493                                                    tree_view->priv->model,
4494                                                    &iter,
4495                                                    GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_PARENT),
4496                                                    node->children?TRUE:FALSE);
4497         }
4498
4499       has_special_cell = gtk_tree_view_has_special_cell (tree_view);
4500
4501       for (list = (rtl ? g_list_last (tree_view->priv->columns) : g_list_first (tree_view->priv->columns));
4502            list;
4503            list = (rtl ? list->prev : list->next))
4504         {
4505           GtkTreeViewColumn *column = list->data;
4506           const gchar *detail = NULL;
4507           gchar new_detail[128];
4508           GtkStateType state;
4509
4510           if (!column->visible)
4511             continue;
4512
4513           if (cell_offset > clip.x + clip.width ||
4514               cell_offset + column->width < clip.x)
4515             {
4516               cell_offset += column->width;
4517               continue;
4518             }
4519
4520           if (column->show_sort_indicator)
4521             flags |= GTK_CELL_RENDERER_SORTED;
4522           else
4523             flags &= ~GTK_CELL_RENDERER_SORTED;
4524
4525           if (cursor == node)
4526             flags |= GTK_CELL_RENDERER_FOCUSED;
4527           else
4528             flags &= ~GTK_CELL_RENDERER_FOCUSED;
4529
4530           background_area.x = cell_offset;
4531           background_area.width = column->width;
4532
4533           cell_area = background_area;
4534           cell_area.y += vertical_separator / 2;
4535           cell_area.x += horizontal_separator / 2;
4536           cell_area.height -= vertical_separator;
4537           cell_area.width -= horizontal_separator;
4538
4539           if (draw_vgrid_lines)
4540             {
4541               if (list == first_column)
4542                 {
4543                   cell_area.width -= grid_line_width / 2;
4544                 }
4545               else if (list == last_column)
4546                 {
4547                   cell_area.x += grid_line_width / 2;
4548                   cell_area.width -= grid_line_width / 2;
4549                 }
4550               else
4551                 {
4552                   cell_area.x += grid_line_width / 2;
4553                   cell_area.width -= grid_line_width;
4554                 }
4555             }
4556
4557           if (draw_hgrid_lines)
4558             {
4559               cell_area.y += grid_line_width / 2;
4560               cell_area.height -= grid_line_width;
4561             }
4562
4563           if (!gdk_rectangle_intersect (&clip, &background_area, NULL))
4564             {
4565               cell_offset += column->width;
4566               continue;
4567             }
4568
4569           gtk_tree_view_column_cell_set_cell_data (column,
4570                                                    tree_view->priv->model,
4571                                                    &iter,
4572                                                    GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_PARENT),
4573                                                    node->children?TRUE:FALSE);
4574
4575           /* Select the detail for drawing the cell.  relevant
4576            * factors are parity, sortedness, and whether to
4577            * display rules.
4578            */
4579           if (allow_rules && tree_view->priv->has_rules)
4580             {
4581               if ((flags & GTK_CELL_RENDERER_SORTED) &&
4582                   n_visible_columns >= 3)
4583                 {
4584                   if (parity)
4585                     detail = "cell_odd_ruled_sorted";
4586                   else
4587                     detail = "cell_even_ruled_sorted";
4588                 }
4589               else
4590                 {
4591                   if (parity)
4592                     detail = "cell_odd_ruled";
4593                   else
4594                     detail = "cell_even_ruled";
4595                 }
4596             }
4597           else
4598             {
4599               if ((flags & GTK_CELL_RENDERER_SORTED) &&
4600                   n_visible_columns >= 3)
4601                 {
4602                   if (parity)
4603                     detail = "cell_odd_sorted";
4604                   else
4605                     detail = "cell_even_sorted";
4606                 }
4607               else
4608                 {
4609                   if (parity)
4610                     detail = "cell_odd";
4611                   else
4612                     detail = "cell_even";
4613                 }
4614             }
4615
4616           g_assert (detail);
4617
4618           if (gtk_widget_get_state (widget) == GTK_STATE_INSENSITIVE)
4619             state = GTK_STATE_INSENSITIVE;
4620           else if (flags & GTK_CELL_RENDERER_SELECTED)
4621             state = GTK_STATE_SELECTED;
4622           else
4623             state = GTK_STATE_NORMAL;
4624
4625           /* Draw background */
4626           is_first = (rtl ? !list->next : !list->prev);
4627           is_last = (rtl ? !list->prev : !list->next);
4628
4629           /* (I don't like the snprintfs either, but couldn't find a
4630            * less messy way).
4631            */
4632           if (is_first && is_last)
4633             g_snprintf (new_detail, 127, "%s", detail);
4634           else if (is_first)
4635             g_snprintf (new_detail, 127, "%s_start", detail);
4636           else if (is_last)
4637             g_snprintf (new_detail, 127, "%s_end", detail);
4638           else
4639             g_snprintf (new_detail, 127, "%s_middle", detail);
4640
4641           gtk_paint_flat_box (style,
4642                               cr,
4643                               state,
4644                               GTK_SHADOW_NONE,
4645                               widget,
4646                               new_detail,
4647                               background_area.x,
4648                               background_area.y,
4649                               background_area.width,
4650                               background_area.height);
4651
4652           if (gtk_tree_view_is_expander_column (tree_view, column))
4653             {
4654               if (!rtl)
4655                 cell_area.x += (depth - 1) * tree_view->priv->level_indentation;
4656               cell_area.width -= (depth - 1) * tree_view->priv->level_indentation;
4657
4658               if (TREE_VIEW_DRAW_EXPANDERS(tree_view))
4659                 {
4660                   if (!rtl)
4661                     cell_area.x += depth * tree_view->priv->expander_size;
4662                   cell_area.width -= depth * tree_view->priv->expander_size;
4663                 }
4664
4665               /* If we have an expander column, the highlight underline
4666                * starts with that column, so that it indicates which
4667                * level of the tree we're dropping at.
4668                */
4669               highlight_x = cell_area.x;
4670               expander_cell_width = cell_area.width;
4671
4672               if (is_separator)
4673                 gtk_paint_hline (style,
4674                                  cr,
4675                                  state,
4676                                  widget,
4677                                  NULL,
4678                                  cell_area.x,
4679                                  cell_area.x + cell_area.width,
4680                                  cell_area.y + cell_area.height / 2);
4681               else
4682                 _gtk_tree_view_column_cell_render (column,
4683                                                    cr,
4684                                                    &background_area,
4685                                                    &cell_area,
4686                                                    flags);
4687               if (TREE_VIEW_DRAW_EXPANDERS(tree_view)
4688                   && (node->flags & GTK_RBNODE_IS_PARENT) == GTK_RBNODE_IS_PARENT)
4689                 {
4690                   if (!got_pointer)
4691                     {
4692                       gdk_window_get_pointer (tree_view->priv->bin_window,
4693                                               &pointer_x, &pointer_y, NULL);
4694                       got_pointer = TRUE;
4695                     }
4696
4697                   gtk_tree_view_draw_arrow (GTK_TREE_VIEW (widget),
4698                                             cr,
4699                                             tree,
4700                                             node,
4701                                             pointer_x, pointer_y);
4702                 }
4703             }
4704           else
4705             {
4706               if (is_separator)
4707                 gtk_paint_hline (style,
4708                                  cr,
4709                                  state,
4710                                  widget,
4711                                  NULL,
4712                                  cell_area.x,
4713                                  cell_area.x + cell_area.width,
4714                                  cell_area.y + cell_area.height / 2);
4715               else
4716                 _gtk_tree_view_column_cell_render (column,
4717                                                    cr,
4718                                                    &background_area,
4719                                                    &cell_area,
4720                                                    flags);
4721             }
4722
4723           if (draw_hgrid_lines)
4724             {
4725               if (background_area.y > 0)
4726                 gtk_tree_view_draw_line (tree_view, cr,
4727                                          GTK_TREE_VIEW_GRID_LINE,
4728                                          background_area.x, background_area.y,
4729                                          background_area.x + background_area.width,
4730                                          background_area.y);
4731
4732               if (y_offset + max_height >= clip.height)
4733                 gtk_tree_view_draw_line (tree_view, cr,
4734                                          GTK_TREE_VIEW_GRID_LINE,
4735                                          background_area.x, background_area.y + max_height,
4736                                          background_area.x + background_area.width,
4737                                          background_area.y + max_height);
4738             }
4739
4740           if (gtk_tree_view_is_expander_column (tree_view, column) &&
4741               tree_view->priv->tree_lines_enabled)
4742             {
4743               gint x = background_area.x;
4744               gint mult = rtl ? -1 : 1;
4745               gint y0 = background_area.y;
4746               gint y1 = background_area.y + background_area.height/2;
4747               gint y2 = background_area.y + background_area.height;
4748
4749               if (rtl)
4750                 x += background_area.width - 1;
4751
4752               if ((node->flags & GTK_RBNODE_IS_PARENT) == GTK_RBNODE_IS_PARENT
4753                   && depth > 1)
4754                 {
4755                   gtk_tree_view_draw_line (tree_view, cr,
4756                                            GTK_TREE_VIEW_TREE_LINE,
4757                                            x + tree_view->priv->expander_size * (depth - 1.5) * mult,
4758                                            y1,
4759                                            x + tree_view->priv->expander_size * (depth - 1.1) * mult,
4760                                            y1);
4761                 }
4762               else if (depth > 1)
4763                 {
4764                   gtk_tree_view_draw_line (tree_view, cr,
4765                                            GTK_TREE_VIEW_TREE_LINE,
4766                                            x + tree_view->priv->expander_size * (depth - 1.5) * mult,
4767                                            y1,
4768                                            x + tree_view->priv->expander_size * (depth - 0.5) * mult,
4769                                            y1);
4770                 }
4771
4772               if (depth > 1)
4773                 {
4774                   gint i;
4775                   GtkRBNode *tmp_node;
4776                   GtkRBTree *tmp_tree;
4777
4778                   if (!_gtk_rbtree_next (tree, node))
4779                     gtk_tree_view_draw_line (tree_view, cr,
4780                                              GTK_TREE_VIEW_TREE_LINE,
4781                                              x + tree_view->priv->expander_size * (depth - 1.5) * mult,
4782                                              y0,
4783                                              x + tree_view->priv->expander_size * (depth - 1.5) * mult,
4784                                              y1);
4785                   else
4786                     gtk_tree_view_draw_line (tree_view, cr,
4787                                              GTK_TREE_VIEW_TREE_LINE,
4788                                              x + tree_view->priv->expander_size * (depth - 1.5) * mult,
4789                                              y0,
4790                                              x + tree_view->priv->expander_size * (depth - 1.5) * mult,
4791                                              y2);
4792
4793                   tmp_node = tree->parent_node;
4794                   tmp_tree = tree->parent_tree;
4795
4796                   for (i = depth - 2; i > 0; i--)
4797                     {
4798                       if (_gtk_rbtree_next (tmp_tree, tmp_node))
4799                         gtk_tree_view_draw_line (tree_view, cr,
4800                                                  GTK_TREE_VIEW_TREE_LINE,
4801                                                  x + tree_view->priv->expander_size * (i - 0.5) * mult,
4802                                                  y0,
4803                                                  x + tree_view->priv->expander_size * (i - 0.5) * mult,
4804                                                  y2);
4805
4806                       tmp_node = tmp_tree->parent_node;
4807                       tmp_tree = tmp_tree->parent_tree;
4808                     }
4809                 }
4810             }
4811
4812           if (node == cursor && has_special_cell &&
4813               ((column == tree_view->priv->focus_column &&
4814                 GTK_TREE_VIEW_FLAG_SET (tree_view, GTK_TREE_VIEW_DRAW_KEYFOCUS) &&
4815                 gtk_widget_has_focus (widget)) ||
4816                (column == tree_view->priv->edited_column)))
4817             {
4818               _gtk_tree_view_column_cell_draw_focus (column,
4819                                                      cr,
4820                                                      &background_area,
4821                                                      &cell_area,
4822                                                      flags);
4823             }
4824
4825           cell_offset += column->width;
4826         }
4827
4828       if (node == drag_highlight)
4829         {
4830           /* Draw indicator for the drop
4831            */
4832           gint highlight_y = -1;
4833           GtkRBTree *tree = NULL;
4834           GtkRBNode *node = NULL;
4835
4836           switch (tree_view->priv->drag_dest_pos)
4837             {
4838             case GTK_TREE_VIEW_DROP_BEFORE:
4839               highlight_y = background_area.y - 1;
4840               if (highlight_y < 0)
4841                       highlight_y = 0;
4842               break;
4843
4844             case GTK_TREE_VIEW_DROP_AFTER:
4845               highlight_y = background_area.y + background_area.height - 1;
4846               break;
4847
4848             case GTK_TREE_VIEW_DROP_INTO_OR_BEFORE:
4849             case GTK_TREE_VIEW_DROP_INTO_OR_AFTER:
4850               _gtk_tree_view_find_node (tree_view, drag_dest_path, &tree, &node);
4851
4852               if (tree == NULL)
4853                 break;
4854
4855               gtk_paint_focus (style,
4856                                cr,
4857                                gtk_widget_get_state (widget),
4858                                widget,
4859                                (is_first
4860                                 ? (is_last ? "treeview-drop-indicator" : "treeview-drop-indicator-left" )
4861                                 : (is_last ? "treeview-drop-indicator-right" : "tree-view-drop-indicator-middle" )),
4862                                 0, BACKGROUND_FIRST_PIXEL (tree_view, tree, node)
4863                                    - focus_line_width / 2,
4864                                 gdk_window_get_width (tree_view->priv->bin_window),
4865                                 ROW_HEIGHT (tree_view, BACKGROUND_HEIGHT (node))
4866                                    - focus_line_width + 1);
4867               break;
4868             }
4869
4870           if (highlight_y >= 0)
4871             {
4872               gtk_tree_view_draw_line (tree_view, cr,
4873                                        GTK_TREE_VIEW_FOREGROUND_LINE,
4874                                        rtl ? highlight_x + expander_cell_width : highlight_x,
4875                                        highlight_y,
4876                                        rtl ? 0 : bin_window_width,
4877                                        highlight_y);
4878             }
4879         }
4880
4881       /* draw the big row-spanning focus rectangle, if needed */
4882       if (!has_special_cell && node == cursor &&
4883           GTK_TREE_VIEW_FLAG_SET (tree_view, GTK_TREE_VIEW_DRAW_KEYFOCUS) &&
4884           gtk_widget_has_focus (widget))
4885         {
4886           gint tmp_y, tmp_height;
4887           GtkStateType focus_rect_state;
4888
4889           focus_rect_state =
4890             flags & GTK_CELL_RENDERER_SELECTED ? GTK_STATE_SELECTED :
4891             (flags & GTK_CELL_RENDERER_PRELIT ? GTK_STATE_PRELIGHT :
4892              (flags & GTK_CELL_RENDERER_INSENSITIVE ? GTK_STATE_INSENSITIVE :
4893               GTK_STATE_NORMAL));
4894
4895           if (draw_hgrid_lines)
4896             {
4897               tmp_y = BACKGROUND_FIRST_PIXEL (tree_view, tree, node) + grid_line_width / 2;
4898               tmp_height = ROW_HEIGHT (tree_view, BACKGROUND_HEIGHT (node)) - grid_line_width;
4899             }
4900           else
4901             {
4902               tmp_y = BACKGROUND_FIRST_PIXEL (tree_view, tree, node);
4903               tmp_height = ROW_HEIGHT (tree_view, BACKGROUND_HEIGHT (node));
4904             }
4905
4906           gtk_paint_focus (style,
4907                            cr,
4908                            focus_rect_state,
4909                            widget,
4910                            (is_first
4911                             ? (is_last ? "treeview" : "treeview-left" )
4912                             : (is_last ? "treeview-right" : "treeview-middle" )),
4913                            0, tmp_y,
4914                            gdk_window_get_width (tree_view->priv->bin_window),
4915                            tmp_height);
4916         }
4917
4918       y_offset += max_height;
4919       if (node->children)
4920         {
4921           GtkTreeIter parent = iter;
4922           gboolean has_child;
4923
4924           tree = node->children;
4925           node = tree->root;
4926
4927           g_assert (node != tree->nil);
4928
4929           while (node->left != tree->nil)
4930             node = node->left;
4931           has_child = gtk_tree_model_iter_children (tree_view->priv->model,
4932                                                     &iter,
4933                                                     &parent);
4934           depth++;
4935
4936           /* Sanity Check! */
4937           TREE_VIEW_INTERNAL_ASSERT (has_child, FALSE);
4938         }
4939       else
4940         {
4941           gboolean done = FALSE;
4942
4943           do
4944             {
4945               node = _gtk_rbtree_next (tree, node);
4946               if (node != NULL)
4947                 {
4948                   gboolean has_next = gtk_tree_model_iter_next (tree_view->priv->model, &iter);
4949                   done = TRUE;
4950
4951                   /* Sanity Check! */
4952                   TREE_VIEW_INTERNAL_ASSERT (has_next, FALSE);
4953                 }
4954               else
4955                 {
4956                   GtkTreeIter parent_iter = iter;
4957                   gboolean has_parent;
4958
4959                   node = tree->parent_node;
4960                   tree = tree->parent_tree;
4961                   if (tree == NULL)
4962                     /* we should go to done to free some memory */
4963                     goto done;
4964                   has_parent = gtk_tree_model_iter_parent (tree_view->priv->model,
4965                                                            &iter,
4966                                                            &parent_iter);
4967                   depth--;
4968
4969                   /* Sanity check */
4970                   TREE_VIEW_INTERNAL_ASSERT (has_parent, FALSE);
4971                 }
4972             }
4973           while (!done);
4974         }
4975     }
4976   while (y_offset < clip.height);
4977
4978 done:
4979   gtk_tree_view_draw_grid_lines (tree_view, cr, n_visible_columns);
4980
4981   if (tree_view->priv->rubber_band_status == RUBBER_BAND_ACTIVE)
4982     gtk_tree_view_paint_rubber_band (tree_view, cr);
4983
4984   if (cursor_path)
4985     gtk_tree_path_free (cursor_path);
4986
4987   if (drag_dest_path)
4988     gtk_tree_path_free (drag_dest_path);
4989
4990   return FALSE;
4991 }
4992
4993 static gboolean
4994 gtk_tree_view_draw (GtkWidget *widget,
4995                     cairo_t   *cr)
4996 {
4997   GtkTreeView *tree_view = GTK_TREE_VIEW (widget);
4998
4999   if (gtk_cairo_should_draw_window (cr, tree_view->priv->bin_window))
5000     {
5001       GList *tmp_list;
5002
5003       cairo_save (cr);
5004
5005       gtk_cairo_transform_to_window (cr, widget, tree_view->priv->bin_window);
5006
5007       gtk_tree_view_bin_draw (widget, cr);
5008
5009       cairo_restore (cr);
5010
5011       /* We can't just chain up to Container::draw as it will try to send the
5012        * event to the headers, so we handle propagating it to our children
5013        * (eg. widgets being edited) ourselves.
5014        */
5015       tmp_list = tree_view->priv->children;
5016       while (tmp_list)
5017         {
5018           GtkTreeViewChild *child = tmp_list->data;
5019           tmp_list = tmp_list->next;
5020
5021           gtk_container_propagate_draw (GTK_CONTAINER (tree_view), child->widget, cr);
5022         }
5023     }
5024
5025   if (gtk_cairo_should_draw_window (cr, tree_view->priv->header_window))
5026     {
5027       GList *list;
5028
5029       for (list = tree_view->priv->columns; list != NULL; list = list->next)
5030         {
5031           GtkTreeViewColumn *column = list->data;
5032
5033           if (column == tree_view->priv->drag_column)
5034             continue;
5035
5036           if (column->visible)
5037             gtk_container_propagate_draw (GTK_CONTAINER (tree_view),
5038                                           column->button,
5039                                           cr);
5040         }
5041     }
5042
5043   if (tree_view->priv->drag_window &&
5044       gtk_cairo_should_draw_window (cr, tree_view->priv->drag_window))
5045     {
5046       gtk_container_propagate_draw (GTK_CONTAINER (tree_view),
5047                                     tree_view->priv->drag_column->button,
5048                                     cr);
5049     }
5050
5051   return TRUE;
5052 }
5053
5054 enum
5055 {
5056   DROP_HOME,
5057   DROP_RIGHT,
5058   DROP_LEFT,
5059   DROP_END
5060 };
5061
5062 /* returns 0x1 when no column has been found -- yes it's hackish */
5063 static GtkTreeViewColumn *
5064 gtk_tree_view_get_drop_column (GtkTreeView       *tree_view,
5065                                GtkTreeViewColumn *column,
5066                                gint               drop_position)
5067 {
5068   GtkTreeViewColumn *left_column = NULL;
5069   GtkTreeViewColumn *cur_column = NULL;
5070   GList *tmp_list;
5071
5072   if (!column->reorderable)
5073     return (GtkTreeViewColumn *)0x1;
5074
5075   switch (drop_position)
5076     {
5077       case DROP_HOME:
5078         /* find first column where we can drop */
5079         tmp_list = tree_view->priv->columns;
5080         if (column == GTK_TREE_VIEW_COLUMN (tmp_list->data))
5081           return (GtkTreeViewColumn *)0x1;
5082
5083         while (tmp_list)
5084           {
5085             g_assert (tmp_list);
5086
5087             cur_column = GTK_TREE_VIEW_COLUMN (tmp_list->data);
5088             tmp_list = tmp_list->next;
5089
5090             if (left_column && left_column->visible == FALSE)
5091               continue;
5092
5093             if (!tree_view->priv->column_drop_func)
5094               return left_column;
5095
5096             if (!tree_view->priv->column_drop_func (tree_view, column, left_column, cur_column, tree_view->priv->column_drop_func_data))
5097               {
5098                 left_column = cur_column;
5099                 continue;
5100               }
5101
5102             return left_column;
5103           }
5104
5105         if (!tree_view->priv->column_drop_func)
5106           return left_column;
5107
5108         if (tree_view->priv->column_drop_func (tree_view, column, left_column, NULL, tree_view->priv->column_drop_func_data))
5109           return left_column;
5110         else
5111           return (GtkTreeViewColumn *)0x1;
5112         break;
5113
5114       case DROP_RIGHT:
5115         /* find first column after column where we can drop */
5116         tmp_list = tree_view->priv->columns;
5117
5118         for (; tmp_list; tmp_list = tmp_list->next)
5119           if (GTK_TREE_VIEW_COLUMN (tmp_list->data) == column)
5120             break;
5121
5122         if (!tmp_list || !tmp_list->next)
5123           return (GtkTreeViewColumn *)0x1;
5124
5125         tmp_list = tmp_list->next;
5126         left_column = GTK_TREE_VIEW_COLUMN (tmp_list->data);
5127         tmp_list = tmp_list->next;
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               {
5138                 left_column = cur_column;
5139                 if (tmp_list)
5140                   tmp_list = tmp_list->next;
5141                 continue;
5142               }
5143
5144             if (!tree_view->priv->column_drop_func)
5145               return left_column;
5146
5147             if (!tree_view->priv->column_drop_func (tree_view, column, left_column, cur_column, tree_view->priv->column_drop_func_data))
5148               {
5149                 left_column = cur_column;
5150                 continue;
5151               }
5152
5153             return left_column;
5154           }
5155
5156         if (!tree_view->priv->column_drop_func)
5157           return left_column;
5158
5159         if (tree_view->priv->column_drop_func (tree_view, column, left_column, NULL, tree_view->priv->column_drop_func_data))
5160           return left_column;
5161         else
5162           return (GtkTreeViewColumn *)0x1;
5163         break;
5164
5165       case DROP_LEFT:
5166         /* find first column before column where we can drop */
5167         tmp_list = tree_view->priv->columns;
5168
5169         for (; tmp_list; tmp_list = tmp_list->next)
5170           if (GTK_TREE_VIEW_COLUMN (tmp_list->data) == column)
5171             break;
5172
5173         if (!tmp_list || !tmp_list->prev)
5174           return (GtkTreeViewColumn *)0x1;
5175
5176         tmp_list = tmp_list->prev;
5177         cur_column = GTK_TREE_VIEW_COLUMN (tmp_list->data);
5178         tmp_list = tmp_list->prev;
5179
5180         while (tmp_list)
5181           {
5182             g_assert (tmp_list);
5183
5184             left_column = GTK_TREE_VIEW_COLUMN (tmp_list->data);
5185
5186             if (left_column && !left_column->visible)
5187               {
5188                 /*if (!tmp_list->prev)
5189                   return (GtkTreeViewColumn *)0x1;
5190                   */
5191 /*
5192                 cur_column = GTK_TREE_VIEW_COLUMN (tmp_list->prev->data);
5193                 tmp_list = tmp_list->prev->prev;
5194                 continue;*/
5195
5196                 cur_column = left_column;
5197                 if (tmp_list)
5198                   tmp_list = tmp_list->prev;
5199                 continue;
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, cur_column, tree_view->priv->column_drop_func_data))
5206               return left_column;
5207
5208             cur_column = left_column;
5209             tmp_list = tmp_list->prev;
5210           }
5211
5212         if (!tree_view->priv->column_drop_func)
5213           return NULL;
5214
5215         if (tree_view->priv->column_drop_func (tree_view, column, NULL, cur_column, tree_view->priv->column_drop_func_data))
5216           return NULL;
5217         else
5218           return (GtkTreeViewColumn *)0x1;
5219         break;
5220
5221       case DROP_END:
5222         /* same as DROP_HOME case, but doing it backwards */
5223         tmp_list = g_list_last (tree_view->priv->columns);
5224         cur_column = NULL;
5225
5226         if (column == GTK_TREE_VIEW_COLUMN (tmp_list->data))
5227           return (GtkTreeViewColumn *)0x1;
5228
5229         while (tmp_list)
5230           {
5231             g_assert (tmp_list);
5232
5233             left_column = GTK_TREE_VIEW_COLUMN (tmp_list->data);
5234
5235             if (left_column && !left_column->visible)
5236               {
5237                 cur_column = left_column;
5238                 tmp_list = tmp_list->prev;
5239               }
5240
5241             if (!tree_view->priv->column_drop_func)
5242               return left_column;
5243
5244             if (tree_view->priv->column_drop_func (tree_view, column, left_column, cur_column, tree_view->priv->column_drop_func_data))
5245               return left_column;
5246
5247             cur_column = left_column;
5248             tmp_list = tmp_list->prev;
5249           }
5250
5251         if (!tree_view->priv->column_drop_func)
5252           return NULL;
5253
5254         if (tree_view->priv->column_drop_func (tree_view, column, NULL, cur_column, tree_view->priv->column_drop_func_data))
5255           return NULL;
5256         else
5257           return (GtkTreeViewColumn *)0x1;
5258         break;
5259     }
5260
5261   return (GtkTreeViewColumn *)0x1;
5262 }
5263
5264 static gboolean
5265 gtk_tree_view_key_press (GtkWidget   *widget,
5266                          GdkEventKey *event)
5267 {
5268   GtkTreeView *tree_view = (GtkTreeView *) widget;
5269
5270   if (tree_view->priv->rubber_band_status)
5271     {
5272       if (event->keyval == GDK_KEY_Escape)
5273         gtk_tree_view_stop_rubber_band (tree_view);
5274
5275       return TRUE;
5276     }
5277
5278   if (GTK_TREE_VIEW_FLAG_SET (tree_view, GTK_TREE_VIEW_IN_COLUMN_DRAG))
5279     {
5280       if (event->keyval == GDK_KEY_Escape)
5281         {
5282           tree_view->priv->cur_reorder = NULL;
5283           gtk_tree_view_button_release_drag_column (widget, NULL);
5284         }
5285       return TRUE;
5286     }
5287
5288   if (GTK_TREE_VIEW_FLAG_SET (tree_view, GTK_TREE_VIEW_HEADERS_VISIBLE))
5289     {
5290       GList *focus_column;
5291       gboolean rtl;
5292
5293       rtl = (gtk_widget_get_direction (GTK_WIDGET (tree_view)) == GTK_TEXT_DIR_RTL);
5294
5295       for (focus_column = tree_view->priv->columns;
5296            focus_column;
5297            focus_column = focus_column->next)
5298         {
5299           GtkTreeViewColumn *column = GTK_TREE_VIEW_COLUMN (focus_column->data);
5300
5301           if (gtk_widget_has_focus (column->button))
5302             break;
5303         }
5304
5305       if (focus_column &&
5306           (event->state & GDK_SHIFT_MASK) && (event->state & GDK_MOD1_MASK) &&
5307           (event->keyval == GDK_KEY_Left || event->keyval == GDK_KEY_KP_Left
5308            || event->keyval == GDK_KEY_Right || event->keyval == GDK_KEY_KP_Right))
5309         {
5310           GtkTreeViewColumn *column = GTK_TREE_VIEW_COLUMN (focus_column->data);
5311
5312           if (!column->resizable)
5313             {
5314               gtk_widget_error_bell (widget);
5315               return TRUE;
5316             }
5317
5318           if (event->keyval == (rtl ? GDK_KEY_Right : GDK_KEY_Left)
5319               || event->keyval == (rtl ? GDK_KEY_KP_Right : GDK_KEY_KP_Left))
5320             {
5321               GtkRequisition button_req;
5322               gint old_width = column->resized_width;
5323
5324               gtk_widget_get_preferred_size (column->button, &button_req, NULL);
5325
5326               column->resized_width = MAX (column->resized_width,
5327                                            column->width);
5328               column->resized_width -= 2;
5329               if (column->resized_width < 0)
5330                 column->resized_width = 0;
5331
5332               if (column->min_width == -1)
5333                 column->resized_width = MAX (button_req.width,
5334                                              column->resized_width);
5335               else
5336                 {
5337                   column->resized_width = MAX (column->min_width,
5338                                                column->resized_width);
5339                 }
5340
5341               if (column->max_width != -1)
5342                 column->resized_width = MIN (column->resized_width,
5343                                              column->max_width);
5344
5345               column->use_resized_width = TRUE;
5346
5347               if (column->resized_width != old_width)
5348                 gtk_widget_queue_resize (widget);
5349               else
5350                 gtk_widget_error_bell (widget);
5351             }
5352           else if (event->keyval == (rtl ? GDK_KEY_Left : GDK_KEY_Right)
5353                    || event->keyval == (rtl ? GDK_KEY_KP_Left : GDK_KEY_KP_Right))
5354             {
5355               gint old_width = column->resized_width;
5356
5357               column->resized_width = MAX (column->resized_width,
5358                                            column->width);
5359               column->resized_width += 2;
5360
5361               if (column->max_width != -1)
5362                 column->resized_width = MIN (column->resized_width,
5363                                              column->max_width);
5364
5365               column->use_resized_width = TRUE;
5366
5367               if (column->resized_width != old_width)
5368                 gtk_widget_queue_resize (widget);
5369               else
5370                 gtk_widget_error_bell (widget);
5371             }
5372
5373           return TRUE;
5374         }
5375
5376       if (focus_column &&
5377           (event->state & GDK_MOD1_MASK) &&
5378           (event->keyval == GDK_KEY_Left || event->keyval == GDK_KEY_KP_Left
5379            || event->keyval == GDK_KEY_Right || event->keyval == GDK_KEY_KP_Right
5380            || event->keyval == GDK_KEY_Home || event->keyval == GDK_KEY_KP_Home
5381            || event->keyval == GDK_KEY_End || event->keyval == GDK_KEY_KP_End))
5382         {
5383           GtkTreeViewColumn *column = GTK_TREE_VIEW_COLUMN (focus_column->data);
5384
5385           if (event->keyval == (rtl ? GDK_KEY_Right : GDK_KEY_Left)
5386               || event->keyval == (rtl ? GDK_KEY_KP_Right : GDK_KEY_KP_Left))
5387             {
5388               GtkTreeViewColumn *col;
5389               col = gtk_tree_view_get_drop_column (tree_view, column, DROP_LEFT);
5390               if (col != (GtkTreeViewColumn *)0x1)
5391                 gtk_tree_view_move_column_after (tree_view, column, col);
5392               else
5393                 gtk_widget_error_bell (widget);
5394             }
5395           else if (event->keyval == (rtl ? GDK_KEY_Left : GDK_KEY_Right)
5396                    || event->keyval == (rtl ? GDK_KEY_KP_Left : GDK_KEY_KP_Right))
5397             {
5398               GtkTreeViewColumn *col;
5399               col = gtk_tree_view_get_drop_column (tree_view, column, DROP_RIGHT);
5400               if (col != (GtkTreeViewColumn *)0x1)
5401                 gtk_tree_view_move_column_after (tree_view, column, col);
5402               else
5403                 gtk_widget_error_bell (widget);
5404             }
5405           else if (event->keyval == GDK_KEY_Home || event->keyval == GDK_KEY_KP_Home)
5406             {
5407               GtkTreeViewColumn *col;
5408               col = gtk_tree_view_get_drop_column (tree_view, column, DROP_HOME);
5409               if (col != (GtkTreeViewColumn *)0x1)
5410                 gtk_tree_view_move_column_after (tree_view, column, col);
5411               else
5412                 gtk_widget_error_bell (widget);
5413             }
5414           else if (event->keyval == GDK_KEY_End || event->keyval == GDK_KEY_KP_End)
5415             {
5416               GtkTreeViewColumn *col;
5417               col = gtk_tree_view_get_drop_column (tree_view, column, DROP_END);
5418               if (col != (GtkTreeViewColumn *)0x1)
5419                 gtk_tree_view_move_column_after (tree_view, column, col);
5420               else
5421                 gtk_widget_error_bell (widget);
5422             }
5423
5424           return TRUE;
5425         }
5426     }
5427
5428   /* Chain up to the parent class.  It handles the keybindings. */
5429   if (GTK_WIDGET_CLASS (gtk_tree_view_parent_class)->key_press_event (widget, event))
5430     return TRUE;
5431
5432   if (tree_view->priv->search_entry_avoid_unhandled_binding)
5433     {
5434       tree_view->priv->search_entry_avoid_unhandled_binding = FALSE;
5435       return FALSE;
5436     }
5437
5438   /* We pass the event to the search_entry.  If its text changes, then we start
5439    * the typeahead find capabilities. */
5440   if (gtk_widget_has_focus (GTK_WIDGET (tree_view))
5441       && tree_view->priv->enable_search
5442       && !tree_view->priv->search_custom_entry_set)
5443     {
5444       GdkEvent *new_event;
5445       char *old_text;
5446       const char *new_text;
5447       gboolean retval;
5448       GdkScreen *screen;
5449       gboolean text_modified;
5450       gulong popup_menu_id;
5451
5452       gtk_tree_view_ensure_interactive_directory (tree_view);
5453
5454       /* Make a copy of the current text */
5455       old_text = g_strdup (gtk_entry_get_text (GTK_ENTRY (tree_view->priv->search_entry)));
5456       new_event = gdk_event_copy ((GdkEvent *) event);
5457       g_object_unref (((GdkEventKey *) new_event)->window);
5458       ((GdkEventKey *) new_event)->window = g_object_ref (gtk_widget_get_window (tree_view->priv->search_window));
5459       gtk_widget_realize (tree_view->priv->search_window);
5460
5461       popup_menu_id = g_signal_connect (tree_view->priv->search_entry,
5462                                         "popup-menu", G_CALLBACK (gtk_true),
5463                                         NULL);
5464
5465       /* Move the entry off screen */
5466       screen = gtk_widget_get_screen (GTK_WIDGET (tree_view));
5467       gtk_window_move (GTK_WINDOW (tree_view->priv->search_window),
5468                        gdk_screen_get_width (screen) + 1,
5469                        gdk_screen_get_height (screen) + 1);
5470       gtk_widget_show (tree_view->priv->search_window);
5471
5472       /* Send the event to the window.  If the preedit_changed signal is emitted
5473        * during this event, we will set priv->imcontext_changed  */
5474       tree_view->priv->imcontext_changed = FALSE;
5475       retval = gtk_widget_event (tree_view->priv->search_window, new_event);
5476       gdk_event_free (new_event);
5477       gtk_widget_hide (tree_view->priv->search_window);
5478
5479       g_signal_handler_disconnect (tree_view->priv->search_entry,
5480                                    popup_menu_id);
5481
5482       /* We check to make sure that the entry tried to handle the text, and that
5483        * the text has changed.
5484        */
5485       new_text = gtk_entry_get_text (GTK_ENTRY (tree_view->priv->search_entry));
5486       text_modified = strcmp (old_text, new_text) != 0;
5487       g_free (old_text);
5488       if (tree_view->priv->imcontext_changed ||    /* we're in a preedit */
5489           (retval && text_modified))               /* ...or the text was modified */
5490         {
5491           if (gtk_tree_view_real_start_interactive_search (tree_view,
5492                                                            gdk_event_get_device ((GdkEvent *) event),
5493                                                            FALSE))
5494             {
5495               gtk_widget_grab_focus (GTK_WIDGET (tree_view));
5496               return TRUE;
5497             }
5498           else
5499             {
5500               gtk_entry_set_text (GTK_ENTRY (tree_view->priv->search_entry), "");
5501               return FALSE;
5502             }
5503         }
5504     }
5505
5506   return FALSE;
5507 }
5508
5509 static gboolean
5510 gtk_tree_view_key_release (GtkWidget   *widget,
5511                            GdkEventKey *event)
5512 {
5513   GtkTreeView *tree_view = GTK_TREE_VIEW (widget);
5514
5515   if (tree_view->priv->rubber_band_status)
5516     return TRUE;
5517
5518   return GTK_WIDGET_CLASS (gtk_tree_view_parent_class)->key_release_event (widget, event);
5519 }
5520
5521 /* FIXME Is this function necessary? Can I get an enter_notify event
5522  * w/o either an expose event or a mouse motion event?
5523  */
5524 static gboolean
5525 gtk_tree_view_enter_notify (GtkWidget        *widget,
5526                             GdkEventCrossing *event)
5527 {
5528   GtkTreeView *tree_view = GTK_TREE_VIEW (widget);
5529   GtkRBTree *tree;
5530   GtkRBNode *node;
5531   gint new_y;
5532
5533   /* Sanity check it */
5534   if (event->window != tree_view->priv->bin_window)
5535     return FALSE;
5536
5537   if (tree_view->priv->tree == NULL)
5538     return FALSE;
5539
5540   if (event->mode == GDK_CROSSING_GRAB ||
5541       event->mode == GDK_CROSSING_GTK_GRAB ||
5542       event->mode == GDK_CROSSING_GTK_UNGRAB ||
5543       event->mode == GDK_CROSSING_STATE_CHANGED)
5544     return TRUE;
5545
5546   /* find the node internally */
5547   new_y = TREE_WINDOW_Y_TO_RBTREE_Y(tree_view, event->y);
5548   if (new_y < 0)
5549     new_y = 0;
5550   _gtk_rbtree_find_offset (tree_view->priv->tree, new_y, &tree, &node);
5551
5552   tree_view->priv->event_last_x = event->x;
5553   tree_view->priv->event_last_y = event->y;
5554
5555   if ((tree_view->priv->button_pressed_node == NULL) ||
5556       (tree_view->priv->button_pressed_node == node))
5557     prelight_or_select (tree_view, tree, node, event->x, event->y);
5558
5559   return TRUE;
5560 }
5561
5562 static gboolean
5563 gtk_tree_view_leave_notify (GtkWidget        *widget,
5564                             GdkEventCrossing *event)
5565 {
5566   GtkTreeView *tree_view;
5567
5568   if (event->mode == GDK_CROSSING_GRAB)
5569     return TRUE;
5570
5571   tree_view = GTK_TREE_VIEW (widget);
5572
5573   if (tree_view->priv->prelight_node)
5574     _gtk_tree_view_queue_draw_node (tree_view,
5575                                    tree_view->priv->prelight_tree,
5576                                    tree_view->priv->prelight_node,
5577                                    NULL);
5578
5579   tree_view->priv->event_last_x = -10000;
5580   tree_view->priv->event_last_y = -10000;
5581
5582   prelight_or_select (tree_view,
5583                       NULL, NULL,
5584                       -1000, -1000); /* coords not possibly over an arrow */
5585
5586   return TRUE;
5587 }
5588
5589
5590 static gint
5591 gtk_tree_view_focus_out (GtkWidget     *widget,
5592                          GdkEventFocus *event)
5593 {
5594   GtkTreeView *tree_view;
5595
5596   tree_view = GTK_TREE_VIEW (widget);
5597
5598   gtk_widget_queue_draw (widget);
5599
5600   /* destroy interactive search dialog */
5601   if (tree_view->priv->search_window)
5602     gtk_tree_view_search_dialog_hide (tree_view->priv->search_window, tree_view,
5603                                       gdk_event_get_device ((GdkEvent *) event));
5604
5605   return FALSE;
5606 }
5607
5608
5609 /* Incremental Reflow
5610  */
5611
5612 static void
5613 gtk_tree_view_node_queue_redraw (GtkTreeView *tree_view,
5614                                  GtkRBTree   *tree,
5615                                  GtkRBNode   *node)
5616 {
5617   GtkAllocation allocation;
5618   gint y;
5619
5620   y = _gtk_rbtree_node_find_offset (tree, node)
5621     - tree_view->priv->vadjustment->value
5622     + TREE_VIEW_HEADER_HEIGHT (tree_view);
5623
5624   gtk_widget_get_allocation (GTK_WIDGET (tree_view), &allocation);
5625   gtk_widget_queue_draw_area (GTK_WIDGET (tree_view),
5626                               0, y,
5627                               allocation.width,
5628                               GTK_RBNODE_GET_HEIGHT (node));
5629 }
5630
5631 static gboolean
5632 node_is_visible (GtkTreeView *tree_view,
5633                  GtkRBTree   *tree,
5634                  GtkRBNode   *node)
5635 {
5636   int y;
5637   int height;
5638
5639   y = _gtk_rbtree_node_find_offset (tree, node);
5640   height = ROW_HEIGHT (tree_view, GTK_RBNODE_GET_HEIGHT (node));
5641
5642   if (y >= tree_view->priv->vadjustment->value &&
5643       y + height <= (tree_view->priv->vadjustment->value
5644                      + tree_view->priv->vadjustment->page_size))
5645     return TRUE;
5646
5647   return FALSE;
5648 }
5649
5650 /* Returns TRUE if it updated the size
5651  */
5652 static gboolean
5653 validate_row (GtkTreeView *tree_view,
5654               GtkRBTree   *tree,
5655               GtkRBNode   *node,
5656               GtkTreeIter *iter,
5657               GtkTreePath *path)
5658 {
5659   GtkTreeViewColumn *column;
5660   GList *list, *first_column, *last_column;
5661   gint height = 0;
5662   gint horizontal_separator;
5663   gint vertical_separator;
5664   gint focus_line_width;
5665   gint depth = gtk_tree_path_get_depth (path);
5666   gboolean retval = FALSE;
5667   gboolean is_separator = FALSE;
5668   gboolean draw_vgrid_lines, draw_hgrid_lines;
5669   gint focus_pad;
5670   gint grid_line_width;
5671   gboolean wide_separators;
5672   gint separator_height;
5673
5674   /* double check the row needs validating */
5675   if (! GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_INVALID) &&
5676       ! GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_COLUMN_INVALID))
5677     return FALSE;
5678
5679   is_separator = row_is_separator (tree_view, iter, NULL);
5680
5681   gtk_widget_style_get (GTK_WIDGET (tree_view),
5682                         "focus-padding", &focus_pad,
5683                         "focus-line-width", &focus_line_width,
5684                         "horizontal-separator", &horizontal_separator,
5685                         "vertical-separator", &vertical_separator,
5686                         "grid-line-width", &grid_line_width,
5687                         "wide-separators",  &wide_separators,
5688                         "separator-height", &separator_height,
5689                         NULL);
5690
5691   draw_vgrid_lines =
5692     tree_view->priv->grid_lines == GTK_TREE_VIEW_GRID_LINES_VERTICAL
5693     || tree_view->priv->grid_lines == GTK_TREE_VIEW_GRID_LINES_BOTH;
5694   draw_hgrid_lines =
5695     tree_view->priv->grid_lines == GTK_TREE_VIEW_GRID_LINES_HORIZONTAL
5696     || tree_view->priv->grid_lines == GTK_TREE_VIEW_GRID_LINES_BOTH;
5697
5698   for (last_column = g_list_last (tree_view->priv->columns);
5699        last_column && !(GTK_TREE_VIEW_COLUMN (last_column->data)->visible);
5700        last_column = last_column->prev)
5701     ;
5702
5703   for (first_column = g_list_first (tree_view->priv->columns);
5704        first_column && !(GTK_TREE_VIEW_COLUMN (first_column->data)->visible);
5705        first_column = first_column->next)
5706     ;
5707
5708   for (list = tree_view->priv->columns; list; list = list->next)
5709     {
5710       gint tmp_width;
5711       gint tmp_height;
5712
5713       column = list->data;
5714
5715       if (! column->visible)
5716         continue;
5717
5718       if (GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_COLUMN_INVALID) && !column->dirty)
5719         continue;
5720
5721       gtk_tree_view_column_cell_set_cell_data (column, tree_view->priv->model, iter,
5722                                                GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_PARENT),
5723                                                node->children?TRUE:FALSE);
5724       gtk_tree_view_column_cell_get_size (column,
5725                                           NULL, NULL, NULL,
5726                                           &tmp_width, &tmp_height);
5727
5728       if (!is_separator)
5729         {
5730           tmp_height += vertical_separator;
5731           height = MAX (height, tmp_height);
5732           height = MAX (height, tree_view->priv->expander_size);
5733         }
5734       else
5735         {
5736           if (wide_separators)
5737             height = separator_height + 2 * focus_pad;
5738           else
5739             height = 2 + 2 * focus_pad;
5740         }
5741
5742       if (gtk_tree_view_is_expander_column (tree_view, column))
5743         {
5744           tmp_width = tmp_width + horizontal_separator + (depth - 1) * tree_view->priv->level_indentation;
5745
5746           if (TREE_VIEW_DRAW_EXPANDERS (tree_view))
5747             tmp_width += depth * tree_view->priv->expander_size;
5748         }
5749       else
5750         tmp_width = tmp_width + horizontal_separator;
5751
5752       if (draw_vgrid_lines)
5753         {
5754           if (list->data == first_column || list->data == last_column)
5755             tmp_width += grid_line_width / 2.0;
5756           else
5757             tmp_width += grid_line_width;
5758         }
5759
5760       if (tmp_width > column->requested_width)
5761         {
5762           retval = TRUE;
5763           column->requested_width = tmp_width;
5764         }
5765     }
5766
5767   if (draw_hgrid_lines)
5768     height += grid_line_width;
5769
5770   if (height != GTK_RBNODE_GET_HEIGHT (node))
5771     {
5772       retval = TRUE;
5773       _gtk_rbtree_node_set_height (tree, node, height);
5774     }
5775   _gtk_rbtree_node_mark_valid (tree, node);
5776   tree_view->priv->post_validation_flag = TRUE;
5777
5778   return retval;
5779 }
5780
5781
5782 static void
5783 validate_visible_area (GtkTreeView *tree_view)
5784 {
5785   GtkAllocation allocation;
5786   GtkTreePath *path = NULL;
5787   GtkTreePath *above_path = NULL;
5788   GtkTreeIter iter;
5789   GtkRBTree *tree = NULL;
5790   GtkRBNode *node = NULL;
5791   gboolean need_redraw = FALSE;
5792   gboolean size_changed = FALSE;
5793   gint total_height;
5794   gint area_above = 0;
5795   gint area_below = 0;
5796
5797   if (tree_view->priv->tree == NULL)
5798     return;
5799
5800   if (! GTK_RBNODE_FLAG_SET (tree_view->priv->tree->root, GTK_RBNODE_DESCENDANTS_INVALID) &&
5801       tree_view->priv->scroll_to_path == NULL)
5802     return;
5803
5804   gtk_widget_get_allocation (GTK_WIDGET (tree_view), &allocation);
5805   total_height = allocation.height - TREE_VIEW_HEADER_HEIGHT (tree_view);
5806
5807   if (total_height == 0)
5808     return;
5809
5810   /* First, we check to see if we need to scroll anywhere
5811    */
5812   if (tree_view->priv->scroll_to_path)
5813     {
5814       path = gtk_tree_row_reference_get_path (tree_view->priv->scroll_to_path);
5815       if (path && !_gtk_tree_view_find_node (tree_view, path, &tree, &node))
5816         {
5817           /* we are going to scroll, and will update dy */
5818           gtk_tree_model_get_iter (tree_view->priv->model, &iter, path);
5819           if (GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_INVALID) ||
5820               GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_COLUMN_INVALID))
5821             {
5822               _gtk_tree_view_queue_draw_node (tree_view, tree, node, NULL);
5823               if (validate_row (tree_view, tree, node, &iter, path))
5824                 size_changed = TRUE;
5825             }
5826
5827           if (tree_view->priv->scroll_to_use_align)
5828             {
5829               gint height = ROW_HEIGHT (tree_view, GTK_RBNODE_GET_HEIGHT (node));
5830               area_above = (total_height - height) *
5831                 tree_view->priv->scroll_to_row_align;
5832               area_below = total_height - area_above - height;
5833               area_above = MAX (area_above, 0);
5834               area_below = MAX (area_below, 0);
5835             }
5836           else
5837             {
5838               /* two cases:
5839                * 1) row not visible
5840                * 2) row visible
5841                */
5842               gint dy;
5843               gint height = ROW_HEIGHT (tree_view, GTK_RBNODE_GET_HEIGHT (node));
5844
5845               dy = _gtk_rbtree_node_find_offset (tree, node);
5846
5847               if (dy >= tree_view->priv->vadjustment->value &&
5848                   dy + height <= (tree_view->priv->vadjustment->value
5849                                   + tree_view->priv->vadjustment->page_size))
5850                 {
5851                   /* row visible: keep the row at the same position */
5852                   area_above = dy - tree_view->priv->vadjustment->value;
5853                   area_below = (tree_view->priv->vadjustment->value +
5854                                 tree_view->priv->vadjustment->page_size)
5855                                - dy - height;
5856                 }
5857               else
5858                 {
5859                   /* row not visible */
5860                   if (dy >= 0
5861                       && dy + height <= tree_view->priv->vadjustment->page_size)
5862                     {
5863                       /* row at the beginning -- fixed */
5864                       area_above = dy;
5865                       area_below = tree_view->priv->vadjustment->page_size
5866                                    - area_above - height;
5867                     }
5868                   else if (dy >= (tree_view->priv->vadjustment->upper -
5869                                   tree_view->priv->vadjustment->page_size))
5870                     {
5871                       /* row at the end -- fixed */
5872                       area_above = dy - (tree_view->priv->vadjustment->upper -
5873                                    tree_view->priv->vadjustment->page_size);
5874                       area_below = tree_view->priv->vadjustment->page_size -
5875                                    area_above - height;
5876
5877                       if (area_below < 0)
5878                         {
5879                           area_above = tree_view->priv->vadjustment->page_size - height;
5880                           area_below = 0;
5881                         }
5882                     }
5883                   else
5884                     {
5885                       /* row somewhere in the middle, bring it to the top
5886                        * of the view
5887                        */
5888                       area_above = 0;
5889                       area_below = total_height - height;
5890                     }
5891                 }
5892             }
5893         }
5894       else
5895         /* the scroll to isn't valid; ignore it.
5896          */
5897         {
5898           if (tree_view->priv->scroll_to_path && !path)
5899             {
5900               gtk_tree_row_reference_free (tree_view->priv->scroll_to_path);
5901               tree_view->priv->scroll_to_path = NULL;
5902             }
5903           if (path)
5904             gtk_tree_path_free (path);
5905           path = NULL;
5906         }
5907     }
5908
5909   /* We didn't have a scroll_to set, so we just handle things normally
5910    */
5911   if (path == NULL)
5912     {
5913       gint offset;
5914
5915       offset = _gtk_rbtree_find_offset (tree_view->priv->tree,
5916                                         TREE_WINDOW_Y_TO_RBTREE_Y (tree_view, 0),
5917                                         &tree, &node);
5918       if (node == NULL)
5919         {
5920           /* In this case, nothing has been validated */
5921           path = gtk_tree_path_new_first ();
5922           _gtk_tree_view_find_node (tree_view, path, &tree, &node);
5923         }
5924       else
5925         {
5926           path = _gtk_tree_view_find_path (tree_view, tree, node);
5927           total_height += offset;
5928         }
5929
5930       gtk_tree_model_get_iter (tree_view->priv->model, &iter, path);
5931
5932       if (GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_INVALID) ||
5933           GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_COLUMN_INVALID))
5934         {
5935           _gtk_tree_view_queue_draw_node (tree_view, tree, node, NULL);
5936           if (validate_row (tree_view, tree, node, &iter, path))
5937             size_changed = TRUE;
5938         }
5939       area_above = 0;
5940       area_below = total_height - ROW_HEIGHT (tree_view, GTK_RBNODE_GET_HEIGHT (node));
5941     }
5942
5943   above_path = gtk_tree_path_copy (path);
5944
5945   /* if we do not validate any row above the new top_row, we will make sure
5946    * that the row immediately above top_row has been validated. (if we do not
5947    * do this, _gtk_rbtree_find_offset will find the row above top_row, because
5948    * when invalidated that row's height will be zero. and this will mess up
5949    * scrolling).
5950    */
5951   if (area_above == 0)
5952     {
5953       GtkRBTree *tmptree;
5954       GtkRBNode *tmpnode;
5955
5956       _gtk_tree_view_find_node (tree_view, above_path, &tmptree, &tmpnode);
5957       _gtk_rbtree_prev_full (tmptree, tmpnode, &tmptree, &tmpnode);
5958
5959       if (tmpnode)
5960         {
5961           GtkTreePath *tmppath;
5962           GtkTreeIter tmpiter;
5963
5964           tmppath = _gtk_tree_view_find_path (tree_view, tmptree, tmpnode);
5965           gtk_tree_model_get_iter (tree_view->priv->model, &tmpiter, tmppath);
5966
5967           if (GTK_RBNODE_FLAG_SET (tmpnode, GTK_RBNODE_INVALID) ||
5968               GTK_RBNODE_FLAG_SET (tmpnode, GTK_RBNODE_COLUMN_INVALID))
5969             {
5970               _gtk_tree_view_queue_draw_node (tree_view, tmptree, tmpnode, NULL);
5971               if (validate_row (tree_view, tmptree, tmpnode, &tmpiter, tmppath))
5972                 size_changed = TRUE;
5973             }
5974
5975           gtk_tree_path_free (tmppath);
5976         }
5977     }
5978
5979   /* Now, we walk forwards and backwards, measuring rows. Unfortunately,
5980    * backwards is much slower then forward, as there is no iter_prev function.
5981    * We go forwards first in case we run out of tree.  Then we go backwards to
5982    * fill out the top.
5983    */
5984   while (node && area_below > 0)
5985     {
5986       if (node->children)
5987         {
5988           GtkTreeIter parent = iter;
5989           gboolean has_child;
5990
5991           tree = node->children;
5992           node = tree->root;
5993
5994           g_assert (node != tree->nil);
5995
5996           while (node->left != tree->nil)
5997             node = node->left;
5998           has_child = gtk_tree_model_iter_children (tree_view->priv->model,
5999                                                     &iter,
6000                                                     &parent);
6001           TREE_VIEW_INTERNAL_ASSERT_VOID (has_child);
6002           gtk_tree_path_down (path);
6003         }
6004       else
6005         {
6006           gboolean done = FALSE;
6007           do
6008             {
6009               node = _gtk_rbtree_next (tree, node);
6010               if (node != NULL)
6011                 {
6012                   gboolean has_next = gtk_tree_model_iter_next (tree_view->priv->model, &iter);
6013                   done = TRUE;
6014                   gtk_tree_path_next (path);
6015
6016                   /* Sanity Check! */
6017                   TREE_VIEW_INTERNAL_ASSERT_VOID (has_next);
6018                 }
6019               else
6020                 {
6021                   GtkTreeIter parent_iter = iter;
6022                   gboolean has_parent;
6023
6024                   node = tree->parent_node;
6025                   tree = tree->parent_tree;
6026                   if (tree == NULL)
6027                     break;
6028                   has_parent = gtk_tree_model_iter_parent (tree_view->priv->model,
6029                                                            &iter,
6030                                                            &parent_iter);
6031                   gtk_tree_path_up (path);
6032
6033                   /* Sanity check */
6034                   TREE_VIEW_INTERNAL_ASSERT_VOID (has_parent);
6035                 }
6036             }
6037           while (!done);
6038         }
6039
6040       if (!node)
6041         break;
6042
6043       if (GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_INVALID) ||
6044           GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_COLUMN_INVALID))
6045         {
6046           _gtk_tree_view_queue_draw_node (tree_view, tree, node, NULL);
6047           if (validate_row (tree_view, tree, node, &iter, path))
6048               size_changed = TRUE;
6049         }
6050
6051       area_below -= ROW_HEIGHT (tree_view, GTK_RBNODE_GET_HEIGHT (node));
6052     }
6053   gtk_tree_path_free (path);
6054
6055   /* If we ran out of tree, and have extra area_below left, we need to add it
6056    * to area_above */
6057   if (area_below > 0)
6058     area_above += area_below;
6059
6060   _gtk_tree_view_find_node (tree_view, above_path, &tree, &node);
6061
6062   /* We walk backwards */
6063   while (area_above > 0)
6064     {
6065       _gtk_rbtree_prev_full (tree, node, &tree, &node);
6066
6067       /* Always find the new path in the tree.  We cannot just assume
6068        * a gtk_tree_path_prev() is enough here, as there might be children
6069        * in between this node and the previous sibling node.  If this
6070        * appears to be a performance hotspot in profiles, we can look into
6071        * intrigate logic for keeping path, node and iter in sync like
6072        * we do for forward walks.  (Which will be hard because of the lacking
6073        * iter_prev).
6074        */
6075
6076       if (node == NULL)
6077         break;
6078
6079       gtk_tree_path_free (above_path);
6080       above_path = _gtk_tree_view_find_path (tree_view, tree, node);
6081
6082       gtk_tree_model_get_iter (tree_view->priv->model, &iter, above_path);
6083
6084       if (GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_INVALID) ||
6085           GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_COLUMN_INVALID))
6086         {
6087           _gtk_tree_view_queue_draw_node (tree_view, tree, node, NULL);
6088           if (validate_row (tree_view, tree, node, &iter, above_path))
6089             size_changed = TRUE;
6090         }
6091       area_above -= ROW_HEIGHT (tree_view, GTK_RBNODE_GET_HEIGHT (node));
6092     }
6093
6094   /* if we scrolled to a path, we need to set the dy here,
6095    * and sync the top row accordingly
6096    */
6097   if (tree_view->priv->scroll_to_path)
6098     {
6099       gtk_tree_view_set_top_row (tree_view, above_path, -area_above);
6100       gtk_tree_view_top_row_to_dy (tree_view);
6101
6102       need_redraw = TRUE;
6103     }
6104   else if (tree_view->priv->height <= tree_view->priv->vadjustment->page_size)
6105     {
6106       /* when we are not scrolling, we should never set dy to something
6107        * else than zero. we update top_row to be in sync with dy = 0.
6108        */
6109       gtk_adjustment_set_value (GTK_ADJUSTMENT (tree_view->priv->vadjustment), 0);
6110       gtk_tree_view_dy_to_top_row (tree_view);
6111     }
6112   else if (tree_view->priv->vadjustment->value + tree_view->priv->vadjustment->page_size > tree_view->priv->height)
6113     {
6114       gtk_adjustment_set_value (GTK_ADJUSTMENT (tree_view->priv->vadjustment), tree_view->priv->height - tree_view->priv->vadjustment->page_size);
6115       gtk_tree_view_dy_to_top_row (tree_view);
6116     }
6117   else
6118     gtk_tree_view_top_row_to_dy (tree_view);
6119
6120   /* update width/height and queue a resize */
6121   if (size_changed)
6122     {
6123       GtkRequisition requisition;
6124
6125       /* We temporarily guess a size, under the assumption that it will be the
6126        * same when we get our next size_allocate.  If we don't do this, we'll be
6127        * in an inconsistent state if we call top_row_to_dy. */
6128
6129       gtk_widget_get_preferred_size (GTK_WIDGET (tree_view),
6130                                      &requisition, NULL);
6131       tree_view->priv->hadjustment->upper = MAX (tree_view->priv->hadjustment->upper, (gfloat)requisition.width);
6132       tree_view->priv->vadjustment->upper = MAX (tree_view->priv->vadjustment->upper, (gfloat)requisition.height);
6133       gtk_adjustment_changed (tree_view->priv->hadjustment);
6134       gtk_adjustment_changed (tree_view->priv->vadjustment);
6135       gtk_widget_queue_resize (GTK_WIDGET (tree_view));
6136     }
6137
6138   if (tree_view->priv->scroll_to_path)
6139     {
6140       gtk_tree_row_reference_free (tree_view->priv->scroll_to_path);
6141       tree_view->priv->scroll_to_path = NULL;
6142     }
6143
6144   if (above_path)
6145     gtk_tree_path_free (above_path);
6146
6147   if (tree_view->priv->scroll_to_column)
6148     {
6149       tree_view->priv->scroll_to_column = NULL;
6150     }
6151   if (need_redraw)
6152     gtk_widget_queue_draw (GTK_WIDGET (tree_view));
6153 }
6154
6155 static void
6156 initialize_fixed_height_mode (GtkTreeView *tree_view)
6157 {
6158   if (!tree_view->priv->tree)
6159     return;
6160
6161   if (tree_view->priv->fixed_height < 0)
6162     {
6163       GtkTreeIter iter;
6164       GtkTreePath *path;
6165
6166       GtkRBTree *tree = NULL;
6167       GtkRBNode *node = NULL;
6168
6169       tree = tree_view->priv->tree;
6170       node = tree->root;
6171
6172       path = _gtk_tree_view_find_path (tree_view, tree, node);
6173       gtk_tree_model_get_iter (tree_view->priv->model, &iter, path);
6174
6175       validate_row (tree_view, tree, node, &iter, path);
6176
6177       gtk_tree_path_free (path);
6178
6179       tree_view->priv->fixed_height = ROW_HEIGHT (tree_view, GTK_RBNODE_GET_HEIGHT (node));
6180     }
6181
6182    _gtk_rbtree_set_fixed_height (tree_view->priv->tree,
6183                                  tree_view->priv->fixed_height, TRUE);
6184 }
6185
6186 /* Our strategy for finding nodes to validate is a little convoluted.  We find
6187  * the left-most uninvalidated node.  We then try walking right, validating
6188  * nodes.  Once we find a valid node, we repeat the previous process of finding
6189  * the first invalid node.
6190  */
6191
6192 static gboolean
6193 do_validate_rows (GtkTreeView *tree_view, gboolean queue_resize)
6194 {
6195   GtkRBTree *tree = NULL;
6196   GtkRBNode *node = NULL;
6197   gboolean validated_area = FALSE;
6198   gint retval = TRUE;
6199   GtkTreePath *path = NULL;
6200   GtkTreeIter iter;
6201   GTimer *timer;
6202   gint i = 0;
6203
6204   gint prev_height = -1;
6205   gboolean fixed_height = TRUE;
6206
6207   g_assert (tree_view);
6208
6209   if (tree_view->priv->tree == NULL)
6210       return FALSE;
6211
6212   if (tree_view->priv->fixed_height_mode)
6213     {
6214       if (tree_view->priv->fixed_height < 0)
6215         initialize_fixed_height_mode (tree_view);
6216
6217       return FALSE;
6218     }
6219
6220   timer = g_timer_new ();
6221   g_timer_start (timer);
6222
6223   do
6224     {
6225       if (! GTK_RBNODE_FLAG_SET (tree_view->priv->tree->root, GTK_RBNODE_DESCENDANTS_INVALID))
6226         {
6227           retval = FALSE;
6228           goto done;
6229         }
6230
6231       if (path != NULL)
6232         {
6233           node = _gtk_rbtree_next (tree, node);
6234           if (node != NULL)
6235             {
6236               TREE_VIEW_INTERNAL_ASSERT (gtk_tree_model_iter_next (tree_view->priv->model, &iter), FALSE);
6237               gtk_tree_path_next (path);
6238             }
6239           else
6240             {
6241               gtk_tree_path_free (path);
6242               path = NULL;
6243             }
6244         }
6245
6246       if (path == NULL)
6247         {
6248           tree = tree_view->priv->tree;
6249           node = tree_view->priv->tree->root;
6250
6251           g_assert (GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_DESCENDANTS_INVALID));
6252
6253           do
6254             {
6255               if (node->left != tree->nil &&
6256                   GTK_RBNODE_FLAG_SET (node->left, GTK_RBNODE_DESCENDANTS_INVALID))
6257                 {
6258                   node = node->left;
6259                 }
6260               else if (node->right != tree->nil &&
6261                        GTK_RBNODE_FLAG_SET (node->right, GTK_RBNODE_DESCENDANTS_INVALID))
6262                 {
6263                   node = node->right;
6264                 }
6265               else if (GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_INVALID) ||
6266                        GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_COLUMN_INVALID))
6267                 {
6268                   break;
6269                 }
6270               else if (node->children != NULL)
6271                 {
6272                   tree = node->children;
6273                   node = tree->root;
6274                 }
6275               else
6276                 /* RBTree corruption!  All bad */
6277                 g_assert_not_reached ();
6278             }
6279           while (TRUE);
6280           path = _gtk_tree_view_find_path (tree_view, tree, node);
6281           gtk_tree_model_get_iter (tree_view->priv->model, &iter, path);
6282         }
6283
6284       validated_area = validate_row (tree_view, tree, node, &iter, path) ||
6285                        validated_area;
6286
6287       if (!tree_view->priv->fixed_height_check)
6288         {
6289           gint height;
6290
6291           height = ROW_HEIGHT (tree_view, GTK_RBNODE_GET_HEIGHT (node));
6292           if (prev_height < 0)
6293             prev_height = height;
6294           else if (prev_height != height)
6295             fixed_height = FALSE;
6296         }
6297
6298       i++;
6299     }
6300   while (g_timer_elapsed (timer, NULL) < GTK_TREE_VIEW_TIME_MS_PER_IDLE / 1000.);
6301
6302   if (!tree_view->priv->fixed_height_check)
6303    {
6304      if (fixed_height)
6305        _gtk_rbtree_set_fixed_height (tree_view->priv->tree, prev_height, FALSE);
6306
6307      tree_view->priv->fixed_height_check = 1;
6308    }
6309
6310  done:
6311   if (validated_area)
6312     {
6313       GtkRequisition requisition;
6314       /* We temporarily guess a size, under the assumption that it will be the
6315        * same when we get our next size_allocate.  If we don't do this, we'll be
6316        * in an inconsistent state when we call top_row_to_dy. */
6317
6318       gtk_widget_get_preferred_size (GTK_WIDGET (tree_view),
6319                                      &requisition, NULL);
6320       tree_view->priv->hadjustment->upper = MAX (tree_view->priv->hadjustment->upper, (gfloat)requisition.width);
6321       tree_view->priv->vadjustment->upper = MAX (tree_view->priv->vadjustment->upper, (gfloat)requisition.height);
6322       gtk_adjustment_changed (tree_view->priv->hadjustment);
6323       gtk_adjustment_changed (tree_view->priv->vadjustment);
6324
6325       if (queue_resize)
6326         gtk_widget_queue_resize (GTK_WIDGET (tree_view));
6327     }
6328
6329   if (path) gtk_tree_path_free (path);
6330   g_timer_destroy (timer);
6331
6332   return retval;
6333 }
6334
6335 static gboolean
6336 validate_rows (GtkTreeView *tree_view)
6337 {
6338   gboolean retval;
6339
6340   retval = do_validate_rows (tree_view, TRUE);
6341
6342   if (! retval && tree_view->priv->validate_rows_timer)
6343     {
6344       g_source_remove (tree_view->priv->validate_rows_timer);
6345       tree_view->priv->validate_rows_timer = 0;
6346     }
6347
6348   return retval;
6349 }
6350
6351 static gboolean
6352 validate_rows_handler (GtkTreeView *tree_view)
6353 {
6354   gboolean retval;
6355
6356   retval = do_validate_rows (tree_view, TRUE);
6357   if (! retval && tree_view->priv->validate_rows_timer)
6358     {
6359       g_source_remove (tree_view->priv->validate_rows_timer);
6360       tree_view->priv->validate_rows_timer = 0;
6361     }
6362
6363   return retval;
6364 }
6365
6366 static gboolean
6367 do_presize_handler (GtkTreeView *tree_view)
6368 {
6369   if (tree_view->priv->mark_rows_col_dirty)
6370     {
6371       if (tree_view->priv->tree)
6372         _gtk_rbtree_column_invalid (tree_view->priv->tree);
6373       tree_view->priv->mark_rows_col_dirty = FALSE;
6374     }
6375   validate_visible_area (tree_view);
6376   tree_view->priv->presize_handler_timer = 0;
6377
6378   if (tree_view->priv->fixed_height_mode)
6379     {
6380       GtkRequisition requisition;
6381
6382       gtk_widget_get_preferred_size (GTK_WIDGET (tree_view),
6383                                      &requisition, NULL);
6384
6385       tree_view->priv->hadjustment->upper = MAX (tree_view->priv->hadjustment->upper, (gfloat)requisition.width);
6386       tree_view->priv->vadjustment->upper = MAX (tree_view->priv->vadjustment->upper, (gfloat)requisition.height);
6387       gtk_adjustment_changed (tree_view->priv->hadjustment);
6388       gtk_adjustment_changed (tree_view->priv->vadjustment);
6389       gtk_widget_queue_resize (GTK_WIDGET (tree_view));
6390     }
6391
6392   return FALSE;
6393 }
6394
6395 static gboolean
6396 presize_handler_callback (gpointer data)
6397 {
6398   do_presize_handler (GTK_TREE_VIEW (data));
6399
6400   return FALSE;
6401 }
6402
6403 static void
6404 install_presize_handler (GtkTreeView *tree_view)
6405 {
6406   if (! gtk_widget_get_realized (GTK_WIDGET (tree_view)))
6407     return;
6408
6409   if (! tree_view->priv->presize_handler_timer)
6410     {
6411       tree_view->priv->presize_handler_timer =
6412         gdk_threads_add_idle_full (GTK_PRIORITY_RESIZE - 2, presize_handler_callback, tree_view, NULL);
6413     }
6414   if (! tree_view->priv->validate_rows_timer)
6415     {
6416       tree_view->priv->validate_rows_timer =
6417         gdk_threads_add_idle_full (GTK_TREE_VIEW_PRIORITY_VALIDATE, (GSourceFunc) validate_rows_handler, tree_view, NULL);
6418     }
6419 }
6420
6421 static void
6422 gtk_tree_view_bin_process_updates (GtkTreeView *tree_view)
6423 {
6424   /* Prior to drawing, we make sure the visible area is validated. */
6425   if (tree_view->priv->presize_handler_timer)
6426     {
6427       g_source_remove (tree_view->priv->presize_handler_timer);
6428       tree_view->priv->presize_handler_timer = 0;
6429
6430       do_presize_handler (tree_view);
6431     }
6432
6433   gdk_window_process_updates (tree_view->priv->bin_window, TRUE);
6434 }
6435
6436 static gboolean
6437 scroll_sync_handler (GtkTreeView *tree_view)
6438 {
6439   if (tree_view->priv->height <= tree_view->priv->vadjustment->page_size)
6440     gtk_adjustment_set_value (GTK_ADJUSTMENT (tree_view->priv->vadjustment), 0);
6441   else if (gtk_tree_row_reference_valid (tree_view->priv->top_row))
6442     gtk_tree_view_top_row_to_dy (tree_view);
6443   else
6444     gtk_tree_view_dy_to_top_row (tree_view);
6445
6446   tree_view->priv->scroll_sync_timer = 0;
6447
6448   return FALSE;
6449 }
6450
6451 static void
6452 install_scroll_sync_handler (GtkTreeView *tree_view)
6453 {
6454   if (!gtk_widget_get_realized (GTK_WIDGET (tree_view)))
6455     return;
6456
6457   if (!tree_view->priv->scroll_sync_timer)
6458     {
6459       tree_view->priv->scroll_sync_timer =
6460         gdk_threads_add_idle_full (GTK_TREE_VIEW_PRIORITY_SCROLL_SYNC, (GSourceFunc) scroll_sync_handler, tree_view, NULL);
6461     }
6462 }
6463
6464 static void
6465 gtk_tree_view_set_top_row (GtkTreeView *tree_view,
6466                            GtkTreePath *path,
6467                            gint         offset)
6468 {
6469   gtk_tree_row_reference_free (tree_view->priv->top_row);
6470
6471   if (!path)
6472     {
6473       tree_view->priv->top_row = NULL;
6474       tree_view->priv->top_row_dy = 0;
6475     }
6476   else
6477     {
6478       tree_view->priv->top_row = gtk_tree_row_reference_new_proxy (G_OBJECT (tree_view), tree_view->priv->model, path);
6479       tree_view->priv->top_row_dy = offset;
6480     }
6481 }
6482
6483 /* Always call this iff dy is in the visible range.  If the tree is empty, then
6484  * it's set to be NULL, and top_row_dy is 0;
6485  */
6486 static void
6487 gtk_tree_view_dy_to_top_row (GtkTreeView *tree_view)
6488 {
6489   gint offset;
6490   GtkTreePath *path;
6491   GtkRBTree *tree;
6492   GtkRBNode *node;
6493
6494   if (tree_view->priv->tree == NULL)
6495     {
6496       gtk_tree_view_set_top_row (tree_view, NULL, 0);
6497     }
6498   else
6499     {
6500       offset = _gtk_rbtree_find_offset (tree_view->priv->tree,
6501                                         tree_view->priv->dy,
6502                                         &tree, &node);
6503
6504       if (tree == NULL)
6505         {
6506           gtk_tree_view_set_top_row (tree_view, NULL, 0);
6507         }
6508       else
6509         {
6510           path = _gtk_tree_view_find_path (tree_view, tree, node);
6511           gtk_tree_view_set_top_row (tree_view, path, offset);
6512           gtk_tree_path_free (path);
6513         }
6514     }
6515 }
6516
6517 static void
6518 gtk_tree_view_top_row_to_dy (GtkTreeView *tree_view)
6519 {
6520   GtkTreePath *path;
6521   GtkRBTree *tree;
6522   GtkRBNode *node;
6523   int new_dy;
6524
6525   /* Avoid recursive calls */
6526   if (tree_view->priv->in_top_row_to_dy)
6527     return;
6528
6529   if (tree_view->priv->top_row)
6530     path = gtk_tree_row_reference_get_path (tree_view->priv->top_row);
6531   else
6532     path = NULL;
6533
6534   if (!path)
6535     tree = NULL;
6536   else
6537     _gtk_tree_view_find_node (tree_view, path, &tree, &node);
6538
6539   if (path)
6540     gtk_tree_path_free (path);
6541
6542   if (tree == NULL)
6543     {
6544       /* keep dy and set new toprow */
6545       gtk_tree_row_reference_free (tree_view->priv->top_row);
6546       tree_view->priv->top_row = NULL;
6547       tree_view->priv->top_row_dy = 0;
6548       /* DO NOT install the idle handler */
6549       gtk_tree_view_dy_to_top_row (tree_view);
6550       return;
6551     }
6552
6553   if (ROW_HEIGHT (tree_view, BACKGROUND_HEIGHT (node))
6554       < tree_view->priv->top_row_dy)
6555     {
6556       /* new top row -- do NOT install the idle handler */
6557       gtk_tree_view_dy_to_top_row (tree_view);
6558       return;
6559     }
6560
6561   new_dy = _gtk_rbtree_node_find_offset (tree, node);
6562   new_dy += tree_view->priv->top_row_dy;
6563
6564   if (new_dy + tree_view->priv->vadjustment->page_size > tree_view->priv->height)
6565     new_dy = tree_view->priv->height - tree_view->priv->vadjustment->page_size;
6566
6567   new_dy = MAX (0, new_dy);
6568
6569   tree_view->priv->in_top_row_to_dy = TRUE;
6570   gtk_adjustment_set_value (tree_view->priv->vadjustment, (gdouble)new_dy);
6571   tree_view->priv->in_top_row_to_dy = FALSE;
6572 }
6573
6574
6575 void
6576 _gtk_tree_view_install_mark_rows_col_dirty (GtkTreeView *tree_view)
6577 {
6578   tree_view->priv->mark_rows_col_dirty = TRUE;
6579
6580   install_presize_handler (tree_view);
6581 }
6582
6583 /*
6584  * This function works synchronously (due to the while (validate_rows...)
6585  * loop).
6586  *
6587  * There was a check for column_type != GTK_TREE_VIEW_COLUMN_AUTOSIZE
6588  * here. You now need to check that yourself.
6589  */
6590 void
6591 _gtk_tree_view_column_autosize (GtkTreeView *tree_view,
6592                                 GtkTreeViewColumn *column)
6593 {
6594   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
6595   g_return_if_fail (GTK_IS_TREE_VIEW_COLUMN (column));
6596
6597   _gtk_tree_view_column_cell_set_dirty (column, FALSE);
6598
6599   do_presize_handler (tree_view);
6600   while (validate_rows (tree_view));
6601
6602   gtk_widget_queue_resize (GTK_WIDGET (tree_view));
6603 }
6604
6605 /* Drag-and-drop */
6606
6607 static void
6608 set_source_row (GdkDragContext *context,
6609                 GtkTreeModel   *model,
6610                 GtkTreePath    *source_row)
6611 {
6612   g_object_set_data_full (G_OBJECT (context),
6613                           I_("gtk-tree-view-source-row"),
6614                           source_row ? gtk_tree_row_reference_new (model, source_row) : NULL,
6615                           (GDestroyNotify) (source_row ? gtk_tree_row_reference_free : NULL));
6616 }
6617
6618 static GtkTreePath*
6619 get_source_row (GdkDragContext *context)
6620 {
6621   GtkTreeRowReference *ref =
6622     g_object_get_data (G_OBJECT (context), "gtk-tree-view-source-row");
6623
6624   if (ref)
6625     return gtk_tree_row_reference_get_path (ref);
6626   else
6627     return NULL;
6628 }
6629
6630 typedef struct
6631 {
6632   GtkTreeRowReference *dest_row;
6633   guint                path_down_mode   : 1;
6634   guint                empty_view_drop  : 1;
6635   guint                drop_append_mode : 1;
6636 }
6637 DestRow;
6638
6639 static void
6640 dest_row_free (gpointer data)
6641 {
6642   DestRow *dr = (DestRow *)data;
6643
6644   gtk_tree_row_reference_free (dr->dest_row);
6645   g_slice_free (DestRow, dr);
6646 }
6647
6648 static void
6649 set_dest_row (GdkDragContext *context,
6650               GtkTreeModel   *model,
6651               GtkTreePath    *dest_row,
6652               gboolean        path_down_mode,
6653               gboolean        empty_view_drop,
6654               gboolean        drop_append_mode)
6655 {
6656   DestRow *dr;
6657
6658   if (!dest_row)
6659     {
6660       g_object_set_data_full (G_OBJECT (context), I_("gtk-tree-view-dest-row"),
6661                               NULL, NULL);
6662       return;
6663     }
6664
6665   dr = g_slice_new (DestRow);
6666
6667   dr->dest_row = gtk_tree_row_reference_new (model, dest_row);
6668   dr->path_down_mode = path_down_mode != FALSE;
6669   dr->empty_view_drop = empty_view_drop != FALSE;
6670   dr->drop_append_mode = drop_append_mode != FALSE;
6671
6672   g_object_set_data_full (G_OBJECT (context), I_("gtk-tree-view-dest-row"),
6673                           dr, (GDestroyNotify) dest_row_free);
6674 }
6675
6676 static GtkTreePath*
6677 get_dest_row (GdkDragContext *context,
6678               gboolean       *path_down_mode)
6679 {
6680   DestRow *dr =
6681     g_object_get_data (G_OBJECT (context), "gtk-tree-view-dest-row");
6682
6683   if (dr)
6684     {
6685       GtkTreePath *path = NULL;
6686
6687       if (path_down_mode)
6688         *path_down_mode = dr->path_down_mode;
6689
6690       if (dr->dest_row)
6691         path = gtk_tree_row_reference_get_path (dr->dest_row);
6692       else if (dr->empty_view_drop)
6693         path = gtk_tree_path_new_from_indices (0, -1);
6694       else
6695         path = NULL;
6696
6697       if (path && dr->drop_append_mode)
6698         gtk_tree_path_next (path);
6699
6700       return path;
6701     }
6702   else
6703     return NULL;
6704 }
6705
6706 /* Get/set whether drag_motion requested the drag data and
6707  * drag_data_received should thus not actually insert the data,
6708  * since the data doesn't result from a drop.
6709  */
6710 static void
6711 set_status_pending (GdkDragContext *context,
6712                     GdkDragAction   suggested_action)
6713 {
6714   g_object_set_data (G_OBJECT (context),
6715                      I_("gtk-tree-view-status-pending"),
6716                      GINT_TO_POINTER (suggested_action));
6717 }
6718
6719 static GdkDragAction
6720 get_status_pending (GdkDragContext *context)
6721 {
6722   return GPOINTER_TO_INT (g_object_get_data (G_OBJECT (context),
6723                                              "gtk-tree-view-status-pending"));
6724 }
6725
6726 static TreeViewDragInfo*
6727 get_info (GtkTreeView *tree_view)
6728 {
6729   return g_object_get_data (G_OBJECT (tree_view), "gtk-tree-view-drag-info");
6730 }
6731
6732 static void
6733 destroy_info (TreeViewDragInfo *di)
6734 {
6735   g_slice_free (TreeViewDragInfo, di);
6736 }
6737
6738 static TreeViewDragInfo*
6739 ensure_info (GtkTreeView *tree_view)
6740 {
6741   TreeViewDragInfo *di;
6742
6743   di = get_info (tree_view);
6744
6745   if (di == NULL)
6746     {
6747       di = g_slice_new0 (TreeViewDragInfo);
6748
6749       g_object_set_data_full (G_OBJECT (tree_view),
6750                               I_("gtk-tree-view-drag-info"),
6751                               di,
6752                               (GDestroyNotify) destroy_info);
6753     }
6754
6755   return di;
6756 }
6757
6758 static void
6759 remove_info (GtkTreeView *tree_view)
6760 {
6761   g_object_set_data (G_OBJECT (tree_view), I_("gtk-tree-view-drag-info"), NULL);
6762 }
6763
6764 #if 0
6765 static gint
6766 drag_scan_timeout (gpointer data)
6767 {
6768   GtkTreeView *tree_view;
6769   gint x, y;
6770   GdkModifierType state;
6771   GtkTreePath *path = NULL;
6772   GtkTreeViewColumn *column = NULL;
6773   GdkRectangle visible_rect;
6774
6775   GDK_THREADS_ENTER ();
6776
6777   tree_view = GTK_TREE_VIEW (data);
6778
6779   gdk_window_get_pointer (tree_view->priv->bin_window,
6780                           &x, &y, &state);
6781
6782   gtk_tree_view_get_visible_rect (tree_view, &visible_rect);
6783
6784   /* See if we are near the edge. */
6785   if ((x - visible_rect.x) < SCROLL_EDGE_SIZE ||
6786       (visible_rect.x + visible_rect.width - x) < SCROLL_EDGE_SIZE ||
6787       (y - visible_rect.y) < SCROLL_EDGE_SIZE ||
6788       (visible_rect.y + visible_rect.height - y) < SCROLL_EDGE_SIZE)
6789     {
6790       gtk_tree_view_get_path_at_pos (tree_view,
6791                                      tree_view->priv->bin_window,
6792                                      x, y,
6793                                      &path,
6794                                      &column,
6795                                      NULL,
6796                                      NULL);
6797
6798       if (path != NULL)
6799         {
6800           gtk_tree_view_scroll_to_cell (tree_view,
6801                                         path,
6802                                         column,
6803                                         TRUE,
6804                                         0.5, 0.5);
6805
6806           gtk_tree_path_free (path);
6807         }
6808     }
6809
6810   GDK_THREADS_LEAVE ();
6811
6812   return TRUE;
6813 }
6814 #endif /* 0 */
6815
6816 static void
6817 add_scroll_timeout (GtkTreeView *tree_view)
6818 {
6819   if (tree_view->priv->scroll_timeout == 0)
6820     {
6821       tree_view->priv->scroll_timeout =
6822         gdk_threads_add_timeout (150, scroll_row_timeout, tree_view);
6823     }
6824 }
6825
6826 static void
6827 remove_scroll_timeout (GtkTreeView *tree_view)
6828 {
6829   if (tree_view->priv->scroll_timeout != 0)
6830     {
6831       g_source_remove (tree_view->priv->scroll_timeout);
6832       tree_view->priv->scroll_timeout = 0;
6833     }
6834 }
6835
6836 static gboolean
6837 check_model_dnd (GtkTreeModel *model,
6838                  GType         required_iface,
6839                  const gchar  *signal)
6840 {
6841   if (model == NULL || !G_TYPE_CHECK_INSTANCE_TYPE ((model), required_iface))
6842     {
6843       g_warning ("You must override the default '%s' handler "
6844                  "on GtkTreeView when using models that don't support "
6845                  "the %s interface and enabling drag-and-drop. The simplest way to do this "
6846                  "is to connect to '%s' and call "
6847                  "g_signal_stop_emission_by_name() in your signal handler to prevent "
6848                  "the default handler from running. Look at the source code "
6849                  "for the default handler in gtktreeview.c to get an idea what "
6850                  "your handler should do. (gtktreeview.c is in the GTK source "
6851                  "code.) If you're using GTK from a language other than C, "
6852                  "there may be a more natural way to override default handlers, e.g. via derivation.",
6853                  signal, g_type_name (required_iface), signal);
6854       return FALSE;
6855     }
6856   else
6857     return TRUE;
6858 }
6859
6860 static void
6861 remove_open_timeout (GtkTreeView *tree_view)
6862 {
6863   if (tree_view->priv->open_dest_timeout != 0)
6864     {
6865       g_source_remove (tree_view->priv->open_dest_timeout);
6866       tree_view->priv->open_dest_timeout = 0;
6867     }
6868 }
6869
6870
6871 static gint
6872 open_row_timeout (gpointer data)
6873 {
6874   GtkTreeView *tree_view = data;
6875   GtkTreePath *dest_path = NULL;
6876   GtkTreeViewDropPosition pos;
6877   gboolean result = FALSE;
6878
6879   gtk_tree_view_get_drag_dest_row (tree_view,
6880                                    &dest_path,
6881                                    &pos);
6882
6883   if (dest_path &&
6884       (pos == GTK_TREE_VIEW_DROP_INTO_OR_AFTER ||
6885        pos == GTK_TREE_VIEW_DROP_INTO_OR_BEFORE))
6886     {
6887       gtk_tree_view_expand_row (tree_view, dest_path, FALSE);
6888       tree_view->priv->open_dest_timeout = 0;
6889
6890       gtk_tree_path_free (dest_path);
6891     }
6892   else
6893     {
6894       if (dest_path)
6895         gtk_tree_path_free (dest_path);
6896
6897       result = TRUE;
6898     }
6899
6900   return result;
6901 }
6902
6903 static gboolean
6904 scroll_row_timeout (gpointer data)
6905 {
6906   GtkTreeView *tree_view = data;
6907
6908   gtk_tree_view_vertical_autoscroll (tree_view);
6909
6910   if (tree_view->priv->rubber_band_status == RUBBER_BAND_ACTIVE)
6911     gtk_tree_view_update_rubber_band (tree_view);
6912
6913   return TRUE;
6914 }
6915
6916 /* Returns TRUE if event should not be propagated to parent widgets */
6917 static gboolean
6918 set_destination_row (GtkTreeView    *tree_view,
6919                      GdkDragContext *context,
6920                      /* coordinates relative to the widget */
6921                      gint            x,
6922                      gint            y,
6923                      GdkDragAction  *suggested_action,
6924                      GdkAtom        *target)
6925 {
6926   GtkTreePath *path = NULL;
6927   GtkTreeViewDropPosition pos;
6928   GtkTreeViewDropPosition old_pos;
6929   TreeViewDragInfo *di;
6930   GtkWidget *widget;
6931   GtkTreePath *old_dest_path = NULL;
6932   gboolean can_drop = FALSE;
6933
6934   *suggested_action = 0;
6935   *target = GDK_NONE;
6936
6937   widget = GTK_WIDGET (tree_view);
6938
6939   di = get_info (tree_view);
6940
6941   if (di == NULL || y - TREE_VIEW_HEADER_HEIGHT (tree_view) < 0)
6942     {
6943       /* someone unset us as a drag dest, note that if
6944        * we return FALSE drag_leave isn't called
6945        */
6946
6947       gtk_tree_view_set_drag_dest_row (tree_view,
6948                                        NULL,
6949                                        GTK_TREE_VIEW_DROP_BEFORE);
6950
6951       remove_scroll_timeout (GTK_TREE_VIEW (widget));
6952       remove_open_timeout (GTK_TREE_VIEW (widget));
6953
6954       return FALSE; /* no longer a drop site */
6955     }
6956
6957   *target = gtk_drag_dest_find_target (widget, context,
6958                                        gtk_drag_dest_get_target_list (widget));
6959   if (*target == GDK_NONE)
6960     {
6961       return FALSE;
6962     }
6963
6964   if (!gtk_tree_view_get_dest_row_at_pos (tree_view,
6965                                           x, y,
6966                                           &path,
6967                                           &pos))
6968     {
6969       gint n_children;
6970       GtkTreeModel *model;
6971
6972       remove_open_timeout (tree_view);
6973
6974       /* the row got dropped on empty space, let's setup a special case
6975        */
6976
6977       if (path)
6978         gtk_tree_path_free (path);
6979
6980       model = gtk_tree_view_get_model (tree_view);
6981
6982       n_children = gtk_tree_model_iter_n_children (model, NULL);
6983       if (n_children)
6984         {
6985           pos = GTK_TREE_VIEW_DROP_AFTER;
6986           path = gtk_tree_path_new_from_indices (n_children - 1, -1);
6987         }
6988       else
6989         {
6990           pos = GTK_TREE_VIEW_DROP_BEFORE;
6991           path = gtk_tree_path_new_from_indices (0, -1);
6992         }
6993
6994       can_drop = TRUE;
6995
6996       goto out;
6997     }
6998
6999   g_assert (path);
7000
7001   /* If we left the current row's "open" zone, unset the timeout for
7002    * opening the row
7003    */
7004   gtk_tree_view_get_drag_dest_row (tree_view,
7005                                    &old_dest_path,
7006                                    &old_pos);
7007
7008   if (old_dest_path &&
7009       (gtk_tree_path_compare (path, old_dest_path) != 0 ||
7010        !(pos == GTK_TREE_VIEW_DROP_INTO_OR_AFTER ||
7011          pos == GTK_TREE_VIEW_DROP_INTO_OR_BEFORE)))
7012     remove_open_timeout (tree_view);
7013
7014   if (old_dest_path)
7015     gtk_tree_path_free (old_dest_path);
7016
7017   if (TRUE /* FIXME if the location droppable predicate */)
7018     {
7019       can_drop = TRUE;
7020     }
7021
7022 out:
7023   if (can_drop)
7024     {
7025       GtkWidget *source_widget;
7026
7027       *suggested_action = context->suggested_action;
7028       source_widget = gtk_drag_get_source_widget (context);
7029
7030       if (source_widget == widget)
7031         {
7032           /* Default to MOVE, unless the user has
7033            * pressed ctrl or shift to affect available actions
7034            */
7035           if ((context->actions & GDK_ACTION_MOVE) != 0)
7036             *suggested_action = GDK_ACTION_MOVE;
7037         }
7038
7039       gtk_tree_view_set_drag_dest_row (GTK_TREE_VIEW (widget),
7040                                        path, pos);
7041     }
7042   else
7043     {
7044       /* can't drop here */
7045       remove_open_timeout (tree_view);
7046
7047       gtk_tree_view_set_drag_dest_row (GTK_TREE_VIEW (widget),
7048                                        NULL,
7049                                        GTK_TREE_VIEW_DROP_BEFORE);
7050     }
7051
7052   if (path)
7053     gtk_tree_path_free (path);
7054
7055   return TRUE;
7056 }
7057
7058 static GtkTreePath*
7059 get_logical_dest_row (GtkTreeView *tree_view,
7060                       gboolean    *path_down_mode,
7061                       gboolean    *drop_append_mode)
7062 {
7063   /* adjust path to point to the row the drop goes in front of */
7064   GtkTreePath *path = NULL;
7065   GtkTreeViewDropPosition pos;
7066
7067   g_return_val_if_fail (path_down_mode != NULL, NULL);
7068   g_return_val_if_fail (drop_append_mode != NULL, NULL);
7069
7070   *path_down_mode = FALSE;
7071   *drop_append_mode = 0;
7072
7073   gtk_tree_view_get_drag_dest_row (tree_view, &path, &pos);
7074
7075   if (path == NULL)
7076     return NULL;
7077
7078   if (pos == GTK_TREE_VIEW_DROP_BEFORE)
7079     ; /* do nothing */
7080   else if (pos == GTK_TREE_VIEW_DROP_INTO_OR_BEFORE ||
7081            pos == GTK_TREE_VIEW_DROP_INTO_OR_AFTER)
7082     *path_down_mode = TRUE;
7083   else
7084     {
7085       GtkTreeIter iter;
7086       GtkTreeModel *model = gtk_tree_view_get_model (tree_view);
7087
7088       g_assert (pos == GTK_TREE_VIEW_DROP_AFTER);
7089
7090       if (!gtk_tree_model_get_iter (model, &iter, path) ||
7091           !gtk_tree_model_iter_next (model, &iter))
7092         *drop_append_mode = 1;
7093       else
7094         {
7095           *drop_append_mode = 0;
7096           gtk_tree_path_next (path);
7097         }
7098     }
7099
7100   return path;
7101 }
7102
7103 static gboolean
7104 gtk_tree_view_maybe_begin_dragging_row (GtkTreeView      *tree_view,
7105                                         GdkEventMotion   *event)
7106 {
7107   GtkWidget *widget = GTK_WIDGET (tree_view);
7108   GdkDragContext *context;
7109   TreeViewDragInfo *di;
7110   GtkTreePath *path = NULL;
7111   gint button;
7112   gint cell_x, cell_y;
7113   GtkTreeModel *model;
7114   gboolean retval = FALSE;
7115
7116   di = get_info (tree_view);
7117
7118   if (di == NULL || !di->source_set)
7119     goto out;
7120
7121   if (tree_view->priv->pressed_button < 0)
7122     goto out;
7123
7124   if (!gtk_drag_check_threshold (widget,
7125                                  tree_view->priv->press_start_x,
7126                                  tree_view->priv->press_start_y,
7127                                  event->x, event->y))
7128     goto out;
7129
7130   model = gtk_tree_view_get_model (tree_view);
7131
7132   if (model == NULL)
7133     goto out;
7134
7135   button = tree_view->priv->pressed_button;
7136   tree_view->priv->pressed_button = -1;
7137
7138   gtk_tree_view_get_path_at_pos (tree_view,
7139                                  tree_view->priv->press_start_x,
7140                                  tree_view->priv->press_start_y,
7141                                  &path,
7142                                  NULL,
7143                                  &cell_x,
7144                                  &cell_y);
7145
7146   if (path == NULL)
7147     goto out;
7148
7149   if (!GTK_IS_TREE_DRAG_SOURCE (model) ||
7150       !gtk_tree_drag_source_row_draggable (GTK_TREE_DRAG_SOURCE (model),
7151                                            path))
7152     goto out;
7153
7154   if (!(GDK_BUTTON1_MASK << (button - 1) & di->start_button_mask))
7155     goto out;
7156
7157   /* Now we can begin the drag */
7158
7159   retval = TRUE;
7160
7161   context = gtk_drag_begin (widget,
7162                             gtk_drag_source_get_target_list (widget),
7163                             di->source_actions,
7164                             button,
7165                             (GdkEvent*)event);
7166
7167   set_source_row (context, model, path);
7168
7169  out:
7170   if (path)
7171     gtk_tree_path_free (path);
7172
7173   return retval;
7174 }
7175
7176
7177 static void
7178 gtk_tree_view_drag_begin (GtkWidget      *widget,
7179                           GdkDragContext *context)
7180 {
7181   GtkTreeView *tree_view;
7182   GtkTreePath *path = NULL;
7183   gint cell_x, cell_y;
7184   cairo_surface_t *row_pix;
7185   TreeViewDragInfo *di;
7186
7187   tree_view = GTK_TREE_VIEW (widget);
7188
7189   /* if the user uses a custom DND source impl, we don't set the icon here */
7190   di = get_info (tree_view);
7191
7192   if (di == NULL || !di->source_set)
7193     return;
7194
7195   gtk_tree_view_get_path_at_pos (tree_view,
7196                                  tree_view->priv->press_start_x,
7197                                  tree_view->priv->press_start_y,
7198                                  &path,
7199                                  NULL,
7200                                  &cell_x,
7201                                  &cell_y);
7202
7203   g_return_if_fail (path != NULL);
7204
7205   row_pix = gtk_tree_view_create_row_drag_icon (tree_view,
7206                                                 path);
7207   cairo_surface_set_device_offset (row_pix,
7208                                    /* the + 1 is for the black border in the icon */
7209                                    - (tree_view->priv->press_start_x + 1),
7210                                    - (cell_y + 1));
7211
7212   gtk_drag_set_icon_surface (context, row_pix);
7213
7214   cairo_surface_destroy (row_pix);
7215   gtk_tree_path_free (path);
7216 }
7217
7218 static void
7219 gtk_tree_view_drag_end (GtkWidget      *widget,
7220                         GdkDragContext *context)
7221 {
7222   /* do nothing */
7223 }
7224
7225 /* Default signal implementations for the drag signals */
7226 static void
7227 gtk_tree_view_drag_data_get (GtkWidget        *widget,
7228                              GdkDragContext   *context,
7229                              GtkSelectionData *selection_data,
7230                              guint             info,
7231                              guint             time)
7232 {
7233   GtkTreeView *tree_view;
7234   GtkTreeModel *model;
7235   TreeViewDragInfo *di;
7236   GtkTreePath *source_row;
7237
7238   tree_view = GTK_TREE_VIEW (widget);
7239
7240   model = gtk_tree_view_get_model (tree_view);
7241
7242   if (model == NULL)
7243     return;
7244
7245   di = get_info (GTK_TREE_VIEW (widget));
7246
7247   if (di == NULL)
7248     return;
7249
7250   source_row = get_source_row (context);
7251
7252   if (source_row == NULL)
7253     return;
7254
7255   /* We can implement the GTK_TREE_MODEL_ROW target generically for
7256    * any model; for DragSource models there are some other targets
7257    * we also support.
7258    */
7259
7260   if (GTK_IS_TREE_DRAG_SOURCE (model) &&
7261       gtk_tree_drag_source_drag_data_get (GTK_TREE_DRAG_SOURCE (model),
7262                                           source_row,
7263                                           selection_data))
7264     goto done;
7265
7266   /* If drag_data_get does nothing, try providing row data. */
7267   if (selection_data->target == gdk_atom_intern_static_string ("GTK_TREE_MODEL_ROW"))
7268     {
7269       gtk_tree_set_row_drag_data (selection_data,
7270                                   model,
7271                                   source_row);
7272     }
7273
7274  done:
7275   gtk_tree_path_free (source_row);
7276 }
7277
7278
7279 static void
7280 gtk_tree_view_drag_data_delete (GtkWidget      *widget,
7281                                 GdkDragContext *context)
7282 {
7283   TreeViewDragInfo *di;
7284   GtkTreeModel *model;
7285   GtkTreeView *tree_view;
7286   GtkTreePath *source_row;
7287
7288   tree_view = GTK_TREE_VIEW (widget);
7289   model = gtk_tree_view_get_model (tree_view);
7290
7291   if (!check_model_dnd (model, GTK_TYPE_TREE_DRAG_SOURCE, "drag_data_delete"))
7292     return;
7293
7294   di = get_info (tree_view);
7295
7296   if (di == NULL)
7297     return;
7298
7299   source_row = get_source_row (context);
7300
7301   if (source_row == NULL)
7302     return;
7303
7304   gtk_tree_drag_source_drag_data_delete (GTK_TREE_DRAG_SOURCE (model),
7305                                          source_row);
7306
7307   gtk_tree_path_free (source_row);
7308
7309   set_source_row (context, NULL, NULL);
7310 }
7311
7312 static void
7313 gtk_tree_view_drag_leave (GtkWidget      *widget,
7314                           GdkDragContext *context,
7315                           guint             time)
7316 {
7317   /* unset any highlight row */
7318   gtk_tree_view_set_drag_dest_row (GTK_TREE_VIEW (widget),
7319                                    NULL,
7320                                    GTK_TREE_VIEW_DROP_BEFORE);
7321
7322   remove_scroll_timeout (GTK_TREE_VIEW (widget));
7323   remove_open_timeout (GTK_TREE_VIEW (widget));
7324 }
7325
7326
7327 static gboolean
7328 gtk_tree_view_drag_motion (GtkWidget        *widget,
7329                            GdkDragContext   *context,
7330                            /* coordinates relative to the widget */
7331                            gint              x,
7332                            gint              y,
7333                            guint             time)
7334 {
7335   gboolean empty;
7336   GtkTreePath *path = NULL;
7337   GtkTreeViewDropPosition pos;
7338   GtkTreeView *tree_view;
7339   GdkDragAction suggested_action = 0;
7340   GdkAtom target;
7341
7342   tree_view = GTK_TREE_VIEW (widget);
7343
7344   if (!set_destination_row (tree_view, context, x, y, &suggested_action, &target))
7345     return FALSE;
7346
7347   gtk_tree_view_get_drag_dest_row (tree_view, &path, &pos);
7348
7349   /* we only know this *after* set_desination_row */
7350   empty = tree_view->priv->empty_view_drop;
7351
7352   if (path == NULL && !empty)
7353     {
7354       /* Can't drop here. */
7355       gdk_drag_status (context, 0, time);
7356     }
7357   else
7358     {
7359       if (tree_view->priv->open_dest_timeout == 0 &&
7360           (pos == GTK_TREE_VIEW_DROP_INTO_OR_AFTER ||
7361            pos == GTK_TREE_VIEW_DROP_INTO_OR_BEFORE))
7362         {
7363           tree_view->priv->open_dest_timeout =
7364             gdk_threads_add_timeout (AUTO_EXPAND_TIMEOUT, open_row_timeout, tree_view);
7365         }
7366       else
7367         {
7368           add_scroll_timeout (tree_view);
7369         }
7370
7371       if (target == gdk_atom_intern_static_string ("GTK_TREE_MODEL_ROW"))
7372         {
7373           /* Request data so we can use the source row when
7374            * determining whether to accept the drop
7375            */
7376           set_status_pending (context, suggested_action);
7377           gtk_drag_get_data (widget, context, target, time);
7378         }
7379       else
7380         {
7381           set_status_pending (context, 0);
7382           gdk_drag_status (context, suggested_action, time);
7383         }
7384     }
7385
7386   if (path)
7387     gtk_tree_path_free (path);
7388
7389   return TRUE;
7390 }
7391
7392
7393 static gboolean
7394 gtk_tree_view_drag_drop (GtkWidget        *widget,
7395                          GdkDragContext   *context,
7396                          /* coordinates relative to the widget */
7397                          gint              x,
7398                          gint              y,
7399                          guint             time)
7400 {
7401   GtkTreeView *tree_view;
7402   GtkTreePath *path;
7403   GdkDragAction suggested_action = 0;
7404   GdkAtom target = GDK_NONE;
7405   TreeViewDragInfo *di;
7406   GtkTreeModel *model;
7407   gboolean path_down_mode;
7408   gboolean drop_append_mode;
7409
7410   tree_view = GTK_TREE_VIEW (widget);
7411
7412   model = gtk_tree_view_get_model (tree_view);
7413
7414   remove_scroll_timeout (GTK_TREE_VIEW (widget));
7415   remove_open_timeout (GTK_TREE_VIEW (widget));
7416
7417   di = get_info (tree_view);
7418
7419   if (di == NULL)
7420     return FALSE;
7421
7422   if (!check_model_dnd (model, GTK_TYPE_TREE_DRAG_DEST, "drag_drop"))
7423     return FALSE;
7424
7425   if (!set_destination_row (tree_view, context, x, y, &suggested_action, &target))
7426     return FALSE;
7427
7428   path = get_logical_dest_row (tree_view, &path_down_mode, &drop_append_mode);
7429
7430   if (target != GDK_NONE && path != NULL)
7431     {
7432       /* in case a motion had requested drag data, change things so we
7433        * treat drag data receives as a drop.
7434        */
7435       set_status_pending (context, 0);
7436       set_dest_row (context, model, path,
7437                     path_down_mode, tree_view->priv->empty_view_drop,
7438                     drop_append_mode);
7439     }
7440
7441   if (path)
7442     gtk_tree_path_free (path);
7443
7444   /* Unset this thing */
7445   gtk_tree_view_set_drag_dest_row (GTK_TREE_VIEW (widget),
7446                                    NULL,
7447                                    GTK_TREE_VIEW_DROP_BEFORE);
7448
7449   if (target != GDK_NONE)
7450     {
7451       gtk_drag_get_data (widget, context, target, time);
7452       return TRUE;
7453     }
7454   else
7455     return FALSE;
7456 }
7457
7458 static void
7459 gtk_tree_view_drag_data_received (GtkWidget        *widget,
7460                                   GdkDragContext   *context,
7461                                   /* coordinates relative to the widget */
7462                                   gint              x,
7463                                   gint              y,
7464                                   GtkSelectionData *selection_data,
7465                                   guint             info,
7466                                   guint             time)
7467 {
7468   GtkTreePath *path;
7469   TreeViewDragInfo *di;
7470   gboolean accepted = FALSE;
7471   GtkTreeModel *model;
7472   GtkTreeView *tree_view;
7473   GtkTreePath *dest_row;
7474   GdkDragAction suggested_action;
7475   gboolean path_down_mode;
7476   gboolean drop_append_mode;
7477
7478   tree_view = GTK_TREE_VIEW (widget);
7479
7480   model = gtk_tree_view_get_model (tree_view);
7481
7482   if (!check_model_dnd (model, GTK_TYPE_TREE_DRAG_DEST, "drag_data_received"))
7483     return;
7484
7485   di = get_info (tree_view);
7486
7487   if (di == NULL)
7488     return;
7489
7490   suggested_action = get_status_pending (context);
7491
7492   if (suggested_action)
7493     {
7494       /* We are getting this data due to a request in drag_motion,
7495        * rather than due to a request in drag_drop, so we are just
7496        * supposed to call drag_status, not actually paste in the
7497        * data.
7498        */
7499       path = get_logical_dest_row (tree_view, &path_down_mode,
7500                                    &drop_append_mode);
7501
7502       if (path == NULL)
7503         suggested_action = 0;
7504       else if (path_down_mode)
7505         gtk_tree_path_down (path);
7506
7507       if (suggested_action)
7508         {
7509           if (!gtk_tree_drag_dest_row_drop_possible (GTK_TREE_DRAG_DEST (model),
7510                                                      path,
7511                                                      selection_data))
7512             {
7513               if (path_down_mode)
7514                 {
7515                   path_down_mode = FALSE;
7516                   gtk_tree_path_up (path);
7517
7518                   if (!gtk_tree_drag_dest_row_drop_possible (GTK_TREE_DRAG_DEST (model),
7519                                                              path,
7520                                                              selection_data))
7521                     suggested_action = 0;
7522                 }
7523               else
7524                 suggested_action = 0;
7525             }
7526         }
7527
7528       gdk_drag_status (context, suggested_action, time);
7529
7530       if (path)
7531         gtk_tree_path_free (path);
7532
7533       /* If you can't drop, remove user drop indicator until the next motion */
7534       if (suggested_action == 0)
7535         gtk_tree_view_set_drag_dest_row (GTK_TREE_VIEW (widget),
7536                                          NULL,
7537                                          GTK_TREE_VIEW_DROP_BEFORE);
7538
7539       return;
7540     }
7541
7542   dest_row = get_dest_row (context, &path_down_mode);
7543
7544   if (dest_row == NULL)
7545     return;
7546
7547   if (selection_data->length >= 0)
7548     {
7549       if (path_down_mode)
7550         {
7551           gtk_tree_path_down (dest_row);
7552           if (!gtk_tree_drag_dest_row_drop_possible (GTK_TREE_DRAG_DEST (model),
7553                                                      dest_row, selection_data))
7554             gtk_tree_path_up (dest_row);
7555         }
7556     }
7557
7558   if (selection_data->length >= 0)
7559     {
7560       if (gtk_tree_drag_dest_drag_data_received (GTK_TREE_DRAG_DEST (model),
7561                                                  dest_row,
7562                                                  selection_data))
7563         accepted = TRUE;
7564     }
7565
7566   gtk_drag_finish (context,
7567                    accepted,
7568                    (context->action == GDK_ACTION_MOVE),
7569                    time);
7570
7571   if (gtk_tree_path_get_depth (dest_row) == 1
7572       && gtk_tree_path_get_indices (dest_row)[0] == 0)
7573     {
7574       /* special special case drag to "0", scroll to first item */
7575       if (!tree_view->priv->scroll_to_path)
7576         gtk_tree_view_scroll_to_cell (tree_view, dest_row, NULL, FALSE, 0.0, 0.0);
7577     }
7578
7579   gtk_tree_path_free (dest_row);
7580
7581   /* drop dest_row */
7582   set_dest_row (context, NULL, NULL, FALSE, FALSE, FALSE);
7583 }
7584
7585
7586
7587 /* GtkContainer Methods
7588  */
7589
7590
7591 static void
7592 gtk_tree_view_remove (GtkContainer *container,
7593                       GtkWidget    *widget)
7594 {
7595   GtkTreeView *tree_view = GTK_TREE_VIEW (container);
7596   GtkTreeViewChild *child = NULL;
7597   GList *tmp_list;
7598
7599   tmp_list = tree_view->priv->children;
7600   while (tmp_list)
7601     {
7602       child = tmp_list->data;
7603       if (child->widget == widget)
7604         {
7605           gtk_widget_unparent (widget);
7606
7607           tree_view->priv->children = g_list_remove_link (tree_view->priv->children, tmp_list);
7608           g_list_free_1 (tmp_list);
7609           g_slice_free (GtkTreeViewChild, child);
7610           return;
7611         }
7612
7613       tmp_list = tmp_list->next;
7614     }
7615
7616   tmp_list = tree_view->priv->columns;
7617
7618   while (tmp_list)
7619     {
7620       GtkTreeViewColumn *column;
7621       column = tmp_list->data;
7622       if (column->button == widget)
7623         {
7624           gtk_widget_unparent (widget);
7625           return;
7626         }
7627       tmp_list = tmp_list->next;
7628     }
7629 }
7630
7631 static void
7632 gtk_tree_view_forall (GtkContainer *container,
7633                       gboolean      include_internals,
7634                       GtkCallback   callback,
7635                       gpointer      callback_data)
7636 {
7637   GtkTreeView *tree_view = GTK_TREE_VIEW (container);
7638   GtkTreeViewChild *child = NULL;
7639   GtkTreeViewColumn *column;
7640   GList *tmp_list;
7641
7642   tmp_list = tree_view->priv->children;
7643   while (tmp_list)
7644     {
7645       child = tmp_list->data;
7646       tmp_list = tmp_list->next;
7647
7648       (* callback) (child->widget, callback_data);
7649     }
7650   if (include_internals == FALSE)
7651     return;
7652
7653   for (tmp_list = tree_view->priv->columns; tmp_list; tmp_list = tmp_list->next)
7654     {
7655       column = tmp_list->data;
7656
7657       if (column->button)
7658         (* callback) (column->button, callback_data);
7659     }
7660 }
7661
7662 /* Returns TRUE if the treeview contains no "special" (editable or activatable)
7663  * cells. If so we draw one big row-spanning focus rectangle.
7664  */
7665 static gboolean
7666 gtk_tree_view_has_special_cell (GtkTreeView *tree_view)
7667 {
7668   GList *list;
7669
7670   for (list = tree_view->priv->columns; list; list = list->next)
7671     {
7672       if (!((GtkTreeViewColumn *)list->data)->visible)
7673         continue;
7674       if (_gtk_tree_view_column_count_special_cells (list->data))
7675         return TRUE;
7676     }
7677
7678   return FALSE;
7679 }
7680
7681 static void
7682 column_sizing_notify (GObject    *object,
7683                       GParamSpec *pspec,
7684                       gpointer    data)
7685 {
7686   GtkTreeViewColumn *c = GTK_TREE_VIEW_COLUMN (object);
7687
7688   if (gtk_tree_view_column_get_sizing (c) != GTK_TREE_VIEW_COLUMN_FIXED)
7689     /* disable fixed height mode */
7690     g_object_set (data, "fixed-height-mode", FALSE, NULL);
7691 }
7692
7693 /**
7694  * gtk_tree_view_set_fixed_height_mode:
7695  * @tree_view: a #GtkTreeView
7696  * @enable: %TRUE to enable fixed height mode
7697  *
7698  * Enables or disables the fixed height mode of @tree_view.
7699  * Fixed height mode speeds up #GtkTreeView by assuming that all
7700  * rows have the same height.
7701  * Only enable this option if all rows are the same height and all
7702  * columns are of type %GTK_TREE_VIEW_COLUMN_FIXED.
7703  *
7704  * Since: 2.6
7705  **/
7706 void
7707 gtk_tree_view_set_fixed_height_mode (GtkTreeView *tree_view,
7708                                      gboolean     enable)
7709 {
7710   GList *l;
7711
7712   enable = enable != FALSE;
7713
7714   if (enable == tree_view->priv->fixed_height_mode)
7715     return;
7716
7717   if (!enable)
7718     {
7719       tree_view->priv->fixed_height_mode = 0;
7720       tree_view->priv->fixed_height = -1;
7721
7722       /* force a revalidation */
7723       install_presize_handler (tree_view);
7724     }
7725   else
7726     {
7727       /* make sure all columns are of type FIXED */
7728       for (l = tree_view->priv->columns; l; l = l->next)
7729         {
7730           GtkTreeViewColumn *c = l->data;
7731
7732           g_return_if_fail (gtk_tree_view_column_get_sizing (c) == GTK_TREE_VIEW_COLUMN_FIXED);
7733         }
7734
7735       /* yes, we really have to do this is in a separate loop */
7736       for (l = tree_view->priv->columns; l; l = l->next)
7737         g_signal_connect (l->data, "notify::sizing",
7738                           G_CALLBACK (column_sizing_notify), tree_view);
7739
7740       tree_view->priv->fixed_height_mode = 1;
7741       tree_view->priv->fixed_height = -1;
7742
7743       if (tree_view->priv->tree)
7744         initialize_fixed_height_mode (tree_view);
7745     }
7746
7747   g_object_notify (G_OBJECT (tree_view), "fixed-height-mode");
7748 }
7749
7750 /**
7751  * gtk_tree_view_get_fixed_height_mode:
7752  * @tree_view: a #GtkTreeView
7753  *
7754  * Returns whether fixed height mode is turned on for @tree_view.
7755  *
7756  * Return value: %TRUE if @tree_view is in fixed height mode
7757  *
7758  * Since: 2.6
7759  **/
7760 gboolean
7761 gtk_tree_view_get_fixed_height_mode (GtkTreeView *tree_view)
7762 {
7763   return tree_view->priv->fixed_height_mode;
7764 }
7765
7766 /* Returns TRUE if the focus is within the headers, after the focus operation is
7767  * done
7768  */
7769 static gboolean
7770 gtk_tree_view_header_focus (GtkTreeView      *tree_view,
7771                             GtkDirectionType  dir,
7772                             gboolean          clamp_column_visible)
7773 {
7774   GtkWidget *focus_child;
7775
7776   GList *last_column, *first_column;
7777   GList *tmp_list;
7778   gboolean rtl;
7779
7780   if (! GTK_TREE_VIEW_FLAG_SET (tree_view, GTK_TREE_VIEW_HEADERS_VISIBLE))
7781     return FALSE;
7782
7783   focus_child = gtk_container_get_focus_child (GTK_CONTAINER (tree_view));
7784
7785   first_column = tree_view->priv->columns;
7786   while (first_column)
7787     {
7788       if (gtk_widget_get_can_focus (GTK_TREE_VIEW_COLUMN (first_column->data)->button) &&
7789           GTK_TREE_VIEW_COLUMN (first_column->data)->visible &&
7790           (GTK_TREE_VIEW_COLUMN (first_column->data)->clickable ||
7791            GTK_TREE_VIEW_COLUMN (first_column->data)->reorderable))
7792         break;
7793       first_column = first_column->next;
7794     }
7795
7796   /* No headers are visible, or are focusable.  We can't focus in or out.
7797    */
7798   if (first_column == NULL)
7799     return FALSE;
7800
7801   last_column = g_list_last (tree_view->priv->columns);
7802   while (last_column)
7803     {
7804       if (gtk_widget_get_can_focus (GTK_TREE_VIEW_COLUMN (last_column->data)->button) &&
7805           GTK_TREE_VIEW_COLUMN (last_column->data)->visible &&
7806           (GTK_TREE_VIEW_COLUMN (last_column->data)->clickable ||
7807            GTK_TREE_VIEW_COLUMN (last_column->data)->reorderable))
7808         break;
7809       last_column = last_column->prev;
7810     }
7811
7812
7813   rtl = (gtk_widget_get_direction (GTK_WIDGET (tree_view)) == GTK_TEXT_DIR_RTL);
7814
7815   switch (dir)
7816     {
7817     case GTK_DIR_TAB_BACKWARD:
7818     case GTK_DIR_TAB_FORWARD:
7819     case GTK_DIR_UP:
7820     case GTK_DIR_DOWN:
7821       if (focus_child == NULL)
7822         {
7823           if (tree_view->priv->focus_column != NULL &&
7824               gtk_widget_get_can_focus (tree_view->priv->focus_column->button))
7825             focus_child = tree_view->priv->focus_column->button;
7826           else
7827             focus_child = GTK_TREE_VIEW_COLUMN (first_column->data)->button;
7828           gtk_widget_grab_focus (focus_child);
7829           break;
7830         }
7831       return FALSE;
7832
7833     case GTK_DIR_LEFT:
7834     case GTK_DIR_RIGHT:
7835       if (focus_child == NULL)
7836         {
7837           if (tree_view->priv->focus_column != NULL)
7838             focus_child = tree_view->priv->focus_column->button;
7839           else if (dir == GTK_DIR_LEFT)
7840             focus_child = GTK_TREE_VIEW_COLUMN (last_column->data)->button;
7841           else
7842             focus_child = GTK_TREE_VIEW_COLUMN (first_column->data)->button;
7843           gtk_widget_grab_focus (focus_child);
7844           break;
7845         }
7846
7847       if (gtk_widget_child_focus (focus_child, dir))
7848         {
7849           /* The focus moves inside the button. */
7850           /* This is probably a great example of bad UI */
7851           break;
7852         }
7853
7854       /* We need to move the focus among the row of buttons. */
7855       for (tmp_list = tree_view->priv->columns; tmp_list; tmp_list = tmp_list->next)
7856         if (GTK_TREE_VIEW_COLUMN (tmp_list->data)->button == focus_child)
7857           break;
7858
7859       if ((tmp_list == first_column && dir == (rtl ? GTK_DIR_RIGHT : GTK_DIR_LEFT))
7860           || (tmp_list == last_column && dir == (rtl ? GTK_DIR_LEFT : GTK_DIR_RIGHT)))
7861         {
7862           gtk_widget_error_bell (GTK_WIDGET (tree_view));
7863           break;
7864         }
7865
7866       while (tmp_list)
7867         {
7868           GtkTreeViewColumn *column;
7869
7870           if (dir == (rtl ? GTK_DIR_LEFT : GTK_DIR_RIGHT))
7871             tmp_list = tmp_list->next;
7872           else
7873             tmp_list = tmp_list->prev;
7874
7875           if (tmp_list == NULL)
7876             {
7877               g_warning ("Internal button not found");
7878               break;
7879             }
7880           column = tmp_list->data;
7881           if (column->button &&
7882               column->visible &&
7883               gtk_widget_get_can_focus (column->button))
7884             {
7885               focus_child = column->button;
7886               gtk_widget_grab_focus (column->button);
7887               break;
7888             }
7889         }
7890       break;
7891     default:
7892       g_assert_not_reached ();
7893       break;
7894     }
7895
7896   /* if focus child is non-null, we assume it's been set to the current focus child
7897    */
7898   if (focus_child)
7899     {
7900       for (tmp_list = tree_view->priv->columns; tmp_list; tmp_list = tmp_list->next)
7901         if (GTK_TREE_VIEW_COLUMN (tmp_list->data)->button == focus_child)
7902           {
7903             tree_view->priv->focus_column = GTK_TREE_VIEW_COLUMN (tmp_list->data);
7904             break;
7905           }
7906
7907       if (clamp_column_visible)
7908         {
7909           gtk_tree_view_clamp_column_visible (tree_view,
7910                                               tree_view->priv->focus_column,
7911                                               FALSE);
7912         }
7913     }
7914
7915   return (focus_child != NULL);
7916 }
7917
7918 /* This function returns in 'path' the first focusable path, if the given path
7919  * is already focusable, it's the returned one.
7920  */
7921 static gboolean
7922 search_first_focusable_path (GtkTreeView  *tree_view,
7923                              GtkTreePath **path,
7924                              gboolean      search_forward,
7925                              GtkRBTree   **new_tree,
7926                              GtkRBNode   **new_node)
7927 {
7928   GtkRBTree *tree = NULL;
7929   GtkRBNode *node = NULL;
7930
7931   if (!path || !*path)
7932     return FALSE;
7933
7934   _gtk_tree_view_find_node (tree_view, *path, &tree, &node);
7935
7936   if (!tree || !node)
7937     return FALSE;
7938
7939   while (node && row_is_separator (tree_view, NULL, *path))
7940     {
7941       if (search_forward)
7942         _gtk_rbtree_next_full (tree, node, &tree, &node);
7943       else
7944         _gtk_rbtree_prev_full (tree, node, &tree, &node);
7945
7946       if (*path)
7947         gtk_tree_path_free (*path);
7948
7949       if (node)
7950         *path = _gtk_tree_view_find_path (tree_view, tree, node);
7951       else
7952         *path = NULL;
7953     }
7954
7955   if (new_tree)
7956     *new_tree = tree;
7957
7958   if (new_node)
7959     *new_node = node;
7960
7961   return (*path != NULL);
7962 }
7963
7964 static gint
7965 gtk_tree_view_focus (GtkWidget        *widget,
7966                      GtkDirectionType  direction)
7967 {
7968   GtkTreeView *tree_view = GTK_TREE_VIEW (widget);
7969   GtkContainer *container = GTK_CONTAINER (widget);
7970   GtkWidget *focus_child;
7971
7972   if (!gtk_widget_is_sensitive (widget) || !gtk_widget_get_can_focus (widget))
7973     return FALSE;
7974
7975   focus_child = gtk_container_get_focus_child (container);
7976
7977   gtk_tree_view_stop_editing (GTK_TREE_VIEW (widget), FALSE);
7978   /* Case 1.  Headers currently have focus. */
7979   if (focus_child)
7980     {
7981       switch (direction)
7982         {
7983         case GTK_DIR_LEFT:
7984         case GTK_DIR_RIGHT:
7985           gtk_tree_view_header_focus (tree_view, direction, TRUE);
7986           return TRUE;
7987         case GTK_DIR_TAB_BACKWARD:
7988         case GTK_DIR_UP:
7989           return FALSE;
7990         case GTK_DIR_TAB_FORWARD:
7991         case GTK_DIR_DOWN:
7992           gtk_widget_grab_focus (widget);
7993           return TRUE;
7994         default:
7995           g_assert_not_reached ();
7996           return FALSE;
7997         }
7998     }
7999
8000   /* Case 2. We don't have focus at all. */
8001   if (!gtk_widget_has_focus (widget))
8002     {
8003       gtk_widget_grab_focus (widget);
8004       return TRUE;
8005     }
8006
8007   /* Case 3. We have focus already. */
8008   if (direction == GTK_DIR_TAB_BACKWARD)
8009     return (gtk_tree_view_header_focus (tree_view, direction, FALSE));
8010   else if (direction == GTK_DIR_TAB_FORWARD)
8011     return FALSE;
8012
8013   /* Other directions caught by the keybindings */
8014   gtk_widget_grab_focus (widget);
8015   return TRUE;
8016 }
8017
8018 static void
8019 gtk_tree_view_grab_focus (GtkWidget *widget)
8020 {
8021   GTK_WIDGET_CLASS (gtk_tree_view_parent_class)->grab_focus (widget);
8022
8023   gtk_tree_view_focus_to_cursor (GTK_TREE_VIEW (widget));
8024 }
8025
8026 static void
8027 gtk_tree_view_style_set (GtkWidget *widget,
8028                          GtkStyle *previous_style)
8029 {
8030   GtkTreeView *tree_view = GTK_TREE_VIEW (widget);
8031   GtkStyle *style;
8032   GList *list;
8033   GtkTreeViewColumn *column;
8034
8035   if (gtk_widget_get_realized (widget))
8036     {
8037       style = gtk_widget_get_style (widget);
8038       gdk_window_set_background (tree_view->priv->bin_window,
8039                                  &style->base[gtk_widget_get_state (widget)]);
8040       gtk_style_set_background (style, tree_view->priv->header_window, GTK_STATE_NORMAL);
8041
8042       gtk_tree_view_set_grid_lines (tree_view, tree_view->priv->grid_lines);
8043       gtk_tree_view_set_enable_tree_lines (tree_view, tree_view->priv->tree_lines_enabled);
8044     }
8045
8046   gtk_widget_style_get (widget,
8047                         "expander-size", &tree_view->priv->expander_size,
8048                         NULL);
8049   tree_view->priv->expander_size += EXPANDER_EXTRA_PADDING;
8050
8051   for (list = tree_view->priv->columns; list; list = list->next)
8052     {
8053       column = list->data;
8054       _gtk_tree_view_column_cell_set_dirty (column, TRUE);
8055     }
8056
8057   tree_view->priv->fixed_height = -1;
8058   _gtk_rbtree_mark_invalid (tree_view->priv->tree);
8059
8060   gtk_widget_queue_resize (widget);
8061 }
8062
8063
8064 static void
8065 gtk_tree_view_set_focus_child (GtkContainer *container,
8066                                GtkWidget    *child)
8067 {
8068   GtkTreeView *tree_view = GTK_TREE_VIEW (container);
8069   GList *list;
8070
8071   for (list = tree_view->priv->columns; list; list = list->next)
8072     {
8073       if (GTK_TREE_VIEW_COLUMN (list->data)->button == child)
8074         {
8075           tree_view->priv->focus_column = GTK_TREE_VIEW_COLUMN (list->data);
8076           break;
8077         }
8078     }
8079
8080   GTK_CONTAINER_CLASS (gtk_tree_view_parent_class)->set_focus_child (container, child);
8081 }
8082
8083 static gboolean
8084 gtk_tree_view_real_move_cursor (GtkTreeView       *tree_view,
8085                                 GtkMovementStep    step,
8086                                 gint               count)
8087 {
8088   GdkModifierType state;
8089
8090   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), FALSE);
8091   g_return_val_if_fail (step == GTK_MOVEMENT_LOGICAL_POSITIONS ||
8092                         step == GTK_MOVEMENT_VISUAL_POSITIONS ||
8093                         step == GTK_MOVEMENT_DISPLAY_LINES ||
8094                         step == GTK_MOVEMENT_PAGES ||
8095                         step == GTK_MOVEMENT_BUFFER_ENDS, FALSE);
8096
8097   if (tree_view->priv->tree == NULL)
8098     return FALSE;
8099   if (!gtk_widget_has_focus (GTK_WIDGET (tree_view)))
8100     return FALSE;
8101
8102   gtk_tree_view_stop_editing (tree_view, FALSE);
8103   GTK_TREE_VIEW_SET_FLAG (tree_view, GTK_TREE_VIEW_DRAW_KEYFOCUS);
8104   gtk_widget_grab_focus (GTK_WIDGET (tree_view));
8105
8106   if (gtk_get_current_event_state (&state))
8107     {
8108       if ((state & GDK_CONTROL_MASK) == GDK_CONTROL_MASK)
8109         tree_view->priv->ctrl_pressed = TRUE;
8110       if ((state & GDK_SHIFT_MASK) == GDK_SHIFT_MASK)
8111         tree_view->priv->shift_pressed = TRUE;
8112     }
8113   /* else we assume not pressed */
8114
8115   switch (step)
8116     {
8117       /* currently we make no distinction.  When we go bi-di, we need to */
8118     case GTK_MOVEMENT_LOGICAL_POSITIONS:
8119     case GTK_MOVEMENT_VISUAL_POSITIONS:
8120       gtk_tree_view_move_cursor_left_right (tree_view, count);
8121       break;
8122     case GTK_MOVEMENT_DISPLAY_LINES:
8123       gtk_tree_view_move_cursor_up_down (tree_view, count);
8124       break;
8125     case GTK_MOVEMENT_PAGES:
8126       gtk_tree_view_move_cursor_page_up_down (tree_view, count);
8127       break;
8128     case GTK_MOVEMENT_BUFFER_ENDS:
8129       gtk_tree_view_move_cursor_start_end (tree_view, count);
8130       break;
8131     default:
8132       g_assert_not_reached ();
8133     }
8134
8135   tree_view->priv->ctrl_pressed = FALSE;
8136   tree_view->priv->shift_pressed = FALSE;
8137
8138   return TRUE;
8139 }
8140
8141 static void
8142 gtk_tree_view_put (GtkTreeView *tree_view,
8143                    GtkWidget   *child_widget,
8144                    /* in bin_window coordinates */
8145                    gint         x,
8146                    gint         y,
8147                    gint         width,
8148                    gint         height)
8149 {
8150   GtkTreeViewChild *child;
8151
8152   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
8153   g_return_if_fail (GTK_IS_WIDGET (child_widget));
8154
8155   child = g_slice_new (GtkTreeViewChild);
8156
8157   child->widget = child_widget;
8158   child->x = x;
8159   child->y = y;
8160   child->width = width;
8161   child->height = height;
8162
8163   tree_view->priv->children = g_list_append (tree_view->priv->children, child);
8164
8165   if (gtk_widget_get_realized (GTK_WIDGET (tree_view)))
8166     gtk_widget_set_parent_window (child->widget, tree_view->priv->bin_window);
8167
8168   gtk_widget_set_parent (child_widget, GTK_WIDGET (tree_view));
8169 }
8170
8171 void
8172 _gtk_tree_view_child_move_resize (GtkTreeView *tree_view,
8173                                   GtkWidget   *widget,
8174                                   /* in tree coordinates */
8175                                   gint         x,
8176                                   gint         y,
8177                                   gint         width,
8178                                   gint         height)
8179 {
8180   GtkTreeViewChild *child = NULL;
8181   GList *list;
8182   GdkRectangle allocation;
8183
8184   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
8185   g_return_if_fail (GTK_IS_WIDGET (widget));
8186
8187   for (list = tree_view->priv->children; list; list = list->next)
8188     {
8189       if (((GtkTreeViewChild *)list->data)->widget == widget)
8190         {
8191           child = list->data;
8192           break;
8193         }
8194     }
8195   if (child == NULL)
8196     return;
8197
8198   allocation.x = child->x = x;
8199   allocation.y = child->y = y;
8200   allocation.width = child->width = width;
8201   allocation.height = child->height = height;
8202
8203   if (gtk_widget_get_realized (widget))
8204     gtk_widget_size_allocate (widget, &allocation);
8205 }
8206
8207
8208 /* TreeModel Callbacks
8209  */
8210
8211 static void
8212 gtk_tree_view_row_changed (GtkTreeModel *model,
8213                            GtkTreePath  *path,
8214                            GtkTreeIter  *iter,
8215                            gpointer      data)
8216 {
8217   GtkTreeView *tree_view = (GtkTreeView *)data;
8218   GtkRBTree *tree;
8219   GtkRBNode *node;
8220   gboolean free_path = FALSE;
8221   GList *list;
8222   GtkTreePath *cursor_path;
8223
8224   g_return_if_fail (path != NULL || iter != NULL);
8225
8226   if (tree_view->priv->cursor != NULL)
8227     cursor_path = gtk_tree_row_reference_get_path (tree_view->priv->cursor);
8228   else
8229     cursor_path = NULL;
8230
8231   if (tree_view->priv->edited_column &&
8232       (cursor_path == NULL || gtk_tree_path_compare (cursor_path, path) == 0))
8233     gtk_tree_view_stop_editing (tree_view, TRUE);
8234
8235   if (cursor_path != NULL)
8236     gtk_tree_path_free (cursor_path);
8237
8238   if (path == NULL)
8239     {
8240       path = gtk_tree_model_get_path (model, iter);
8241       free_path = TRUE;
8242     }
8243   else if (iter == NULL)
8244     gtk_tree_model_get_iter (model, iter, path);
8245
8246   if (_gtk_tree_view_find_node (tree_view,
8247                                 path,
8248                                 &tree,
8249                                 &node))
8250     /* We aren't actually showing the node */
8251     goto done;
8252
8253   if (tree == NULL)
8254     goto done;
8255
8256   if (tree_view->priv->fixed_height_mode
8257       && tree_view->priv->fixed_height >= 0)
8258     {
8259       _gtk_rbtree_node_set_height (tree, node, tree_view->priv->fixed_height);
8260       if (gtk_widget_get_realized (GTK_WIDGET (tree_view)))
8261         gtk_tree_view_node_queue_redraw (tree_view, tree, node);
8262     }
8263   else
8264     {
8265       _gtk_rbtree_node_mark_invalid (tree, node);
8266       for (list = tree_view->priv->columns; list; list = list->next)
8267         {
8268           GtkTreeViewColumn *column;
8269
8270           column = list->data;
8271           if (! column->visible)
8272             continue;
8273
8274           if (column->column_type == GTK_TREE_VIEW_COLUMN_AUTOSIZE)
8275             {
8276               _gtk_tree_view_column_cell_set_dirty (column, TRUE);
8277             }
8278         }
8279     }
8280
8281  done:
8282   if (!tree_view->priv->fixed_height_mode &&
8283       gtk_widget_get_realized (GTK_WIDGET (tree_view)))
8284     install_presize_handler (tree_view);
8285   if (free_path)
8286     gtk_tree_path_free (path);
8287 }
8288
8289 static void
8290 gtk_tree_view_row_inserted (GtkTreeModel *model,
8291                             GtkTreePath  *path,
8292                             GtkTreeIter  *iter,
8293                             gpointer      data)
8294 {
8295   GtkTreeView *tree_view = (GtkTreeView *) data;
8296   gint *indices;
8297   GtkRBTree *tmptree, *tree;
8298   GtkRBNode *tmpnode = NULL;
8299   gint depth;
8300   gint i = 0;
8301   gint height;
8302   gboolean free_path = FALSE;
8303   gboolean node_visible = TRUE;
8304
8305   g_return_if_fail (path != NULL || iter != NULL);
8306
8307   if (tree_view->priv->fixed_height_mode
8308       && tree_view->priv->fixed_height >= 0)
8309     height = tree_view->priv->fixed_height;
8310   else
8311     height = 0;
8312
8313   if (path == NULL)
8314     {
8315       path = gtk_tree_model_get_path (model, iter);
8316       free_path = TRUE;
8317     }
8318   else if (iter == NULL)
8319     gtk_tree_model_get_iter (model, iter, path);
8320
8321   if (tree_view->priv->tree == NULL)
8322     tree_view->priv->tree = _gtk_rbtree_new ();
8323
8324   tmptree = tree = tree_view->priv->tree;
8325
8326   /* Update all row-references */
8327   gtk_tree_row_reference_inserted (G_OBJECT (data), path);
8328   depth = gtk_tree_path_get_depth (path);
8329   indices = gtk_tree_path_get_indices (path);
8330
8331   /* First, find the parent tree */
8332   while (i < depth - 1)
8333     {
8334       if (tmptree == NULL)
8335         {
8336           /* We aren't showing the node */
8337           node_visible = FALSE;
8338           goto done;
8339         }
8340
8341       tmpnode = _gtk_rbtree_find_count (tmptree, indices[i] + 1);
8342       if (tmpnode == NULL)
8343         {
8344           g_warning ("A node was inserted with a parent that's not in the tree.\n" \
8345                      "This possibly means that a GtkTreeModel inserted a child node\n" \
8346                      "before the parent was inserted.");
8347           goto done;
8348         }
8349       else if (!GTK_RBNODE_FLAG_SET (tmpnode, GTK_RBNODE_IS_PARENT))
8350         {
8351           /* FIXME enforce correct behavior on model, probably */
8352           /* In theory, the model should have emitted has_child_toggled here.  We
8353            * try to catch it anyway, just to be safe, in case the model hasn't.
8354            */
8355           GtkTreePath *tmppath = _gtk_tree_view_find_path (tree_view,
8356                                                            tree,
8357                                                            tmpnode);
8358           gtk_tree_view_row_has_child_toggled (model, tmppath, NULL, data);
8359           gtk_tree_path_free (tmppath);
8360           goto done;
8361         }
8362
8363       tmptree = tmpnode->children;
8364       tree = tmptree;
8365       i++;
8366     }
8367
8368   if (tree == NULL)
8369     {
8370       node_visible = FALSE;
8371       goto done;
8372     }
8373
8374   /* ref the node */
8375   gtk_tree_model_ref_node (tree_view->priv->model, iter);
8376   if (indices[depth - 1] == 0)
8377     {
8378       tmpnode = _gtk_rbtree_find_count (tree, 1);
8379       tmpnode = _gtk_rbtree_insert_before (tree, tmpnode, height, FALSE);
8380     }
8381   else
8382     {
8383       tmpnode = _gtk_rbtree_find_count (tree, indices[depth - 1]);
8384       tmpnode = _gtk_rbtree_insert_after (tree, tmpnode, height, FALSE);
8385     }
8386
8387  done:
8388   if (height > 0)
8389     {
8390       if (tree)
8391         _gtk_rbtree_node_mark_valid (tree, tmpnode);
8392
8393       if (node_visible && node_is_visible (tree_view, tree, tmpnode))
8394         gtk_widget_queue_resize (GTK_WIDGET (tree_view));
8395       else
8396         gtk_widget_queue_resize_no_redraw (GTK_WIDGET (tree_view));
8397     }
8398   else
8399     install_presize_handler (tree_view);
8400   if (free_path)
8401     gtk_tree_path_free (path);
8402 }
8403
8404 static void
8405 gtk_tree_view_row_has_child_toggled (GtkTreeModel *model,
8406                                      GtkTreePath  *path,
8407                                      GtkTreeIter  *iter,
8408                                      gpointer      data)
8409 {
8410   GtkTreeView *tree_view = (GtkTreeView *)data;
8411   GtkTreeIter real_iter;
8412   gboolean has_child;
8413   GtkRBTree *tree;
8414   GtkRBNode *node;
8415   gboolean free_path = FALSE;
8416
8417   g_return_if_fail (path != NULL || iter != NULL);
8418
8419   if (iter)
8420     real_iter = *iter;
8421
8422   if (path == NULL)
8423     {
8424       path = gtk_tree_model_get_path (model, iter);
8425       free_path = TRUE;
8426     }
8427   else if (iter == NULL)
8428     gtk_tree_model_get_iter (model, &real_iter, path);
8429
8430   if (_gtk_tree_view_find_node (tree_view,
8431                                 path,
8432                                 &tree,
8433                                 &node))
8434     /* We aren't actually showing the node */
8435     goto done;
8436
8437   if (tree == NULL)
8438     goto done;
8439
8440   has_child = gtk_tree_model_iter_has_child (model, &real_iter);
8441   /* Sanity check.
8442    */
8443   if (GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_PARENT) == has_child)
8444     goto done;
8445
8446   if (has_child)
8447     GTK_RBNODE_SET_FLAG (node, GTK_RBNODE_IS_PARENT);
8448   else
8449     GTK_RBNODE_UNSET_FLAG (node, GTK_RBNODE_IS_PARENT);
8450
8451   if (has_child && GTK_TREE_VIEW_FLAG_SET (tree_view, GTK_TREE_VIEW_IS_LIST))
8452     {
8453       GTK_TREE_VIEW_UNSET_FLAG (tree_view, GTK_TREE_VIEW_IS_LIST);
8454       if (GTK_TREE_VIEW_FLAG_SET (tree_view, GTK_TREE_VIEW_SHOW_EXPANDERS))
8455         {
8456           GList *list;
8457
8458           for (list = tree_view->priv->columns; list; list = list->next)
8459             if (GTK_TREE_VIEW_COLUMN (list->data)->visible)
8460               {
8461                 GTK_TREE_VIEW_COLUMN (list->data)->dirty = TRUE;
8462                 _gtk_tree_view_column_cell_set_dirty (GTK_TREE_VIEW_COLUMN (list->data), TRUE);
8463                 break;
8464               }
8465         }
8466       gtk_widget_queue_resize (GTK_WIDGET (tree_view));
8467     }
8468   else
8469     {
8470       _gtk_tree_view_queue_draw_node (tree_view, tree, node, NULL);
8471     }
8472
8473  done:
8474   if (free_path)
8475     gtk_tree_path_free (path);
8476 }
8477
8478 static void
8479 count_children_helper (GtkRBTree *tree,
8480                        GtkRBNode *node,
8481                        gpointer   data)
8482 {
8483   if (node->children)
8484     _gtk_rbtree_traverse (node->children, node->children->root, G_POST_ORDER, count_children_helper, data);
8485   (*((gint *)data))++;
8486 }
8487
8488 static void
8489 check_selection_helper (GtkRBTree *tree,
8490                         GtkRBNode *node,
8491                         gpointer   data)
8492 {
8493   gint *value = (gint *)data;
8494
8495   *value = GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_SELECTED);
8496
8497   if (node->children && !*value)
8498     _gtk_rbtree_traverse (node->children, node->children->root, G_POST_ORDER, check_selection_helper, data);
8499 }
8500
8501 static void
8502 gtk_tree_view_row_deleted (GtkTreeModel *model,
8503                            GtkTreePath  *path,
8504                            gpointer      data)
8505 {
8506   GtkTreeView *tree_view = (GtkTreeView *)data;
8507   GtkRBTree *tree;
8508   GtkRBNode *node;
8509   GList *list;
8510   gint selection_changed = FALSE;
8511
8512   g_return_if_fail (path != NULL);
8513
8514   gtk_tree_row_reference_deleted (G_OBJECT (data), path);
8515
8516   if (_gtk_tree_view_find_node (tree_view, path, &tree, &node))
8517     return;
8518
8519   if (tree == NULL)
8520     return;
8521
8522   /* check if the selection has been changed */
8523   _gtk_rbtree_traverse (tree, node, G_POST_ORDER,
8524                         check_selection_helper, &selection_changed);
8525
8526   for (list = tree_view->priv->columns; list; list = list->next)
8527     if (((GtkTreeViewColumn *)list->data)->visible &&
8528         ((GtkTreeViewColumn *)list->data)->column_type == GTK_TREE_VIEW_COLUMN_AUTOSIZE)
8529       _gtk_tree_view_column_cell_set_dirty ((GtkTreeViewColumn *)list->data, TRUE);
8530
8531   /* Ensure we don't have a dangling pointer to a dead node */
8532   ensure_unprelighted (tree_view);
8533
8534   /* Cancel editting if we've started */
8535   gtk_tree_view_stop_editing (tree_view, TRUE);
8536
8537   /* If we have a node expanded/collapsed timeout, remove it */
8538   remove_expand_collapse_timeout (tree_view);
8539
8540   if (tree_view->priv->destroy_count_func)
8541     {
8542       gint child_count = 0;
8543       if (node->children)
8544         _gtk_rbtree_traverse (node->children, node->children->root, G_POST_ORDER, count_children_helper, &child_count);
8545       tree_view->priv->destroy_count_func (tree_view, path, child_count, tree_view->priv->destroy_count_data);
8546     }
8547
8548   if (tree->root->count == 1)
8549     {
8550       if (tree_view->priv->tree == tree)
8551         tree_view->priv->tree = NULL;
8552
8553       _gtk_rbtree_remove (tree);
8554     }
8555   else
8556     {
8557       _gtk_rbtree_remove_node (tree, node);
8558     }
8559
8560   if (! gtk_tree_row_reference_valid (tree_view->priv->top_row))
8561     {
8562       gtk_tree_row_reference_free (tree_view->priv->top_row);
8563       tree_view->priv->top_row = NULL;
8564     }
8565
8566   install_scroll_sync_handler (tree_view);
8567
8568   gtk_widget_queue_resize (GTK_WIDGET (tree_view));
8569
8570   if (selection_changed)
8571     g_signal_emit_by_name (tree_view->priv->selection, "changed");
8572 }
8573
8574 static void
8575 gtk_tree_view_rows_reordered (GtkTreeModel *model,
8576                               GtkTreePath  *parent,
8577                               GtkTreeIter  *iter,
8578                               gint         *new_order,
8579                               gpointer      data)
8580 {
8581   GtkTreeView *tree_view = GTK_TREE_VIEW (data);
8582   GtkRBTree *tree;
8583   GtkRBNode *node;
8584   gint len;
8585
8586   len = gtk_tree_model_iter_n_children (model, iter);
8587
8588   if (len < 2)
8589     return;
8590
8591   gtk_tree_row_reference_reordered (G_OBJECT (data),
8592                                     parent,
8593                                     iter,
8594                                     new_order);
8595
8596   if (_gtk_tree_view_find_node (tree_view,
8597                                 parent,
8598                                 &tree,
8599                                 &node))
8600     return;
8601
8602   /* We need to special case the parent path */
8603   if (tree == NULL)
8604     tree = tree_view->priv->tree;
8605   else
8606     tree = node->children;
8607
8608   if (tree == NULL)
8609     return;
8610
8611   if (tree_view->priv->edited_column)
8612     gtk_tree_view_stop_editing (tree_view, TRUE);
8613
8614   /* we need to be unprelighted */
8615   ensure_unprelighted (tree_view);
8616
8617   /* clear the timeout */
8618   cancel_arrow_animation (tree_view);
8619
8620   _gtk_rbtree_reorder (tree, new_order, len);
8621
8622   gtk_widget_queue_draw (GTK_WIDGET (tree_view));
8623
8624   gtk_tree_view_dy_to_top_row (tree_view);
8625 }
8626
8627
8628 /* Internal tree functions
8629  */
8630
8631
8632 static void
8633 gtk_tree_view_get_background_xrange (GtkTreeView       *tree_view,
8634                                      GtkRBTree         *tree,
8635                                      GtkTreeViewColumn *column,
8636                                      gint              *x1,
8637                                      gint              *x2)
8638 {
8639   GtkTreeViewColumn *tmp_column = NULL;
8640   gint total_width;
8641   GList *list;
8642   gboolean rtl;
8643
8644   if (x1)
8645     *x1 = 0;
8646
8647   if (x2)
8648     *x2 = 0;
8649
8650   rtl = (gtk_widget_get_direction (GTK_WIDGET (tree_view)) == GTK_TEXT_DIR_RTL);
8651
8652   total_width = 0;
8653   for (list = (rtl ? g_list_last (tree_view->priv->columns) : g_list_first (tree_view->priv->columns));
8654        list;
8655        list = (rtl ? list->prev : list->next))
8656     {
8657       tmp_column = list->data;
8658
8659       if (tmp_column == column)
8660         break;
8661
8662       if (tmp_column->visible)
8663         total_width += tmp_column->width;
8664     }
8665
8666   if (tmp_column != column)
8667     {
8668       g_warning (G_STRLOC": passed-in column isn't in the tree");
8669       return;
8670     }
8671
8672   if (x1)
8673     *x1 = total_width;
8674
8675   if (x2)
8676     {
8677       if (column->visible)
8678         *x2 = total_width + column->width;
8679       else
8680         *x2 = total_width; /* width of 0 */
8681     }
8682 }
8683 static void
8684 gtk_tree_view_get_arrow_xrange (GtkTreeView *tree_view,
8685                                 GtkRBTree   *tree,
8686                                 gint        *x1,
8687                                 gint        *x2)
8688 {
8689   gint x_offset = 0;
8690   GList *list;
8691   GtkTreeViewColumn *tmp_column = NULL;
8692   gint total_width;
8693   gboolean indent_expanders;
8694   gboolean rtl;
8695
8696   rtl = (gtk_widget_get_direction (GTK_WIDGET (tree_view)) == GTK_TEXT_DIR_RTL);
8697
8698   total_width = 0;
8699   for (list = (rtl ? g_list_last (tree_view->priv->columns) : g_list_first (tree_view->priv->columns));
8700        list;
8701        list = (rtl ? list->prev : list->next))
8702     {
8703       tmp_column = list->data;
8704
8705       if (gtk_tree_view_is_expander_column (tree_view, tmp_column))
8706         {
8707           if (rtl)
8708             x_offset = total_width + tmp_column->width - tree_view->priv->expander_size;
8709           else
8710             x_offset = total_width;
8711           break;
8712         }
8713
8714       if (tmp_column->visible)
8715         total_width += tmp_column->width;
8716     }
8717
8718   gtk_widget_style_get (GTK_WIDGET (tree_view),
8719                         "indent-expanders", &indent_expanders,
8720                         NULL);
8721
8722   if (indent_expanders)
8723     {
8724       if (rtl)
8725         x_offset -= tree_view->priv->expander_size * _gtk_rbtree_get_depth (tree);
8726       else
8727         x_offset += tree_view->priv->expander_size * _gtk_rbtree_get_depth (tree);
8728     }
8729
8730   *x1 = x_offset;
8731
8732   if (tmp_column && tmp_column->visible)
8733     /* +1 because x2 isn't included in the range. */
8734     *x2 = *x1 + tree_view->priv->expander_size + 1;
8735   else
8736     *x2 = *x1;
8737 }
8738
8739 static void
8740 gtk_tree_view_build_tree (GtkTreeView *tree_view,
8741                           GtkRBTree   *tree,
8742                           GtkTreeIter *iter,
8743                           gint         depth,
8744                           gboolean     recurse)
8745 {
8746   GtkRBNode *temp = NULL;
8747   GtkTreePath *path = NULL;
8748   gboolean is_list = GTK_TREE_VIEW_FLAG_SET (tree_view, GTK_TREE_VIEW_IS_LIST);
8749
8750   do
8751     {
8752       gtk_tree_model_ref_node (tree_view->priv->model, iter);
8753       temp = _gtk_rbtree_insert_after (tree, temp, 0, FALSE);
8754
8755       if (tree_view->priv->fixed_height > 0)
8756         {
8757           if (GTK_RBNODE_FLAG_SET (temp, GTK_RBNODE_INVALID))
8758             {
8759               _gtk_rbtree_node_set_height (tree, temp, tree_view->priv->fixed_height);
8760               _gtk_rbtree_node_mark_valid (tree, temp);
8761             }
8762         }
8763
8764       if (is_list)
8765         continue;
8766
8767       if (recurse)
8768         {
8769           GtkTreeIter child;
8770
8771           if (!path)
8772             path = gtk_tree_model_get_path (tree_view->priv->model, iter);
8773           else
8774             gtk_tree_path_next (path);
8775
8776           if (gtk_tree_model_iter_children (tree_view->priv->model, &child, iter))
8777             {
8778               gboolean expand;
8779
8780               g_signal_emit (tree_view, tree_view_signals[TEST_EXPAND_ROW], 0, iter, path, &expand);
8781
8782               if (gtk_tree_model_iter_has_child (tree_view->priv->model, iter)
8783                   && !expand)
8784                 {
8785                   temp->children = _gtk_rbtree_new ();
8786                   temp->children->parent_tree = tree;
8787                   temp->children->parent_node = temp;
8788                   gtk_tree_view_build_tree (tree_view, temp->children, &child, depth + 1, recurse);
8789                 }
8790             }
8791         }
8792
8793       if (gtk_tree_model_iter_has_child (tree_view->priv->model, iter))
8794         {
8795           if ((temp->flags&GTK_RBNODE_IS_PARENT) != GTK_RBNODE_IS_PARENT)
8796             temp->flags ^= GTK_RBNODE_IS_PARENT;
8797         }
8798     }
8799   while (gtk_tree_model_iter_next (tree_view->priv->model, iter));
8800
8801   if (path)
8802     gtk_tree_path_free (path);
8803 }
8804
8805 /* Make sure the node is visible vertically */
8806 static void
8807 gtk_tree_view_clamp_node_visible (GtkTreeView *tree_view,
8808                                   GtkRBTree   *tree,
8809                                   GtkRBNode   *node)
8810 {
8811   gint node_dy, height;
8812   GtkTreePath *path = NULL;
8813
8814   if (!gtk_widget_get_realized (GTK_WIDGET (tree_view)))
8815     return;
8816
8817   /* just return if the node is visible, avoiding a costly expose */
8818   node_dy = _gtk_rbtree_node_find_offset (tree, node);
8819   height = ROW_HEIGHT (tree_view, GTK_RBNODE_GET_HEIGHT (node));
8820   if (! GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_INVALID)
8821       && node_dy >= tree_view->priv->vadjustment->value
8822       && node_dy + height <= (tree_view->priv->vadjustment->value
8823                               + tree_view->priv->vadjustment->page_size))
8824     return;
8825
8826   path = _gtk_tree_view_find_path (tree_view, tree, node);
8827   if (path)
8828     {
8829       /* We process updates because we want to clear old selected items when we scroll.
8830        * if this is removed, we get a "selection streak" at the bottom. */
8831       gtk_tree_view_bin_process_updates (tree_view);
8832
8833       gtk_tree_view_scroll_to_cell (tree_view, path, NULL, FALSE, 0.0, 0.0);
8834       gtk_tree_path_free (path);
8835     }
8836 }
8837
8838 static void
8839 gtk_tree_view_clamp_column_visible (GtkTreeView       *tree_view,
8840                                     GtkTreeViewColumn *column,
8841                                     gboolean           focus_to_cell)
8842 {
8843   GtkAllocation allocation;
8844   gint x, width;
8845
8846   if (column == NULL)
8847     return;
8848
8849   gtk_widget_get_allocation (column->button, &allocation);
8850   x = allocation.x;
8851   width = allocation.width;
8852
8853   if (width > tree_view->priv->hadjustment->page_size)
8854     {
8855       /* The column is larger than the horizontal page size.  If the
8856        * column has cells which can be focussed individually, then we make
8857        * sure the cell which gets focus is fully visible (if even the
8858        * focus cell is bigger than the page size, we make sure the
8859        * left-hand side of the cell is visible).
8860        *
8861        * If the column does not have those so-called special cells, we
8862        * make sure the left-hand side of the column is visible.
8863        */
8864
8865       if (focus_to_cell && gtk_tree_view_has_special_cell (tree_view))
8866         {
8867           GtkTreePath *cursor_path;
8868           GdkRectangle background_area, cell_area, focus_area;
8869
8870           cursor_path = gtk_tree_row_reference_get_path (tree_view->priv->cursor);
8871
8872           gtk_tree_view_get_cell_area (tree_view,
8873                                        cursor_path, column, &cell_area);
8874           gtk_tree_view_get_background_area (tree_view,
8875                                              cursor_path, column,
8876                                              &background_area);
8877
8878           gtk_tree_path_free (cursor_path);
8879
8880           _gtk_tree_view_column_get_focus_area (column,
8881                                                 &background_area,
8882                                                 &cell_area,
8883                                                 &focus_area);
8884
8885           x = focus_area.x;
8886           width = focus_area.width;
8887
8888           if (width < tree_view->priv->hadjustment->page_size)
8889             {
8890               if ((tree_view->priv->hadjustment->value + tree_view->priv->hadjustment->page_size) < (x + width))
8891                 gtk_adjustment_set_value (tree_view->priv->hadjustment,
8892                                           x + width - tree_view->priv->hadjustment->page_size);
8893               else if (tree_view->priv->hadjustment->value > x)
8894                 gtk_adjustment_set_value (tree_view->priv->hadjustment, x);
8895             }
8896         }
8897
8898       gtk_adjustment_set_value (tree_view->priv->hadjustment, x);
8899     }
8900   else
8901     {
8902       if ((tree_view->priv->hadjustment->value + tree_view->priv->hadjustment->page_size) < (x + width))
8903           gtk_adjustment_set_value (tree_view->priv->hadjustment,
8904                                     x + width - tree_view->priv->hadjustment->page_size);
8905       else if (tree_view->priv->hadjustment->value > x)
8906         gtk_adjustment_set_value (tree_view->priv->hadjustment, x);
8907   }
8908 }
8909
8910 /* This function could be more efficient.  I'll optimize it if profiling seems
8911  * to imply that it is important */
8912 GtkTreePath *
8913 _gtk_tree_view_find_path (GtkTreeView *tree_view,
8914                           GtkRBTree   *tree,
8915                           GtkRBNode   *node)
8916 {
8917   GtkTreePath *path;
8918   GtkRBTree *tmp_tree;
8919   GtkRBNode *tmp_node, *last;
8920   gint count;
8921
8922   path = gtk_tree_path_new ();
8923
8924   g_return_val_if_fail (node != NULL, path);
8925   g_return_val_if_fail (node != tree->nil, path);
8926
8927   count = 1 + node->left->count;
8928
8929   last = node;
8930   tmp_node = node->parent;
8931   tmp_tree = tree;
8932   while (tmp_tree)
8933     {
8934       while (tmp_node != tmp_tree->nil)
8935         {
8936           if (tmp_node->right == last)
8937             count += 1 + tmp_node->left->count;
8938           last = tmp_node;
8939           tmp_node = tmp_node->parent;
8940         }
8941       gtk_tree_path_prepend_index (path, count - 1);
8942       last = tmp_tree->parent_node;
8943       tmp_tree = tmp_tree->parent_tree;
8944       if (last)
8945         {
8946           count = 1 + last->left->count;
8947           tmp_node = last->parent;
8948         }
8949     }
8950   return path;
8951 }
8952
8953 /* Returns TRUE if we ran out of tree before finding the path.  If the path is
8954  * invalid (ie. points to a node that's not in the tree), *tree and *node are
8955  * both set to NULL.
8956  */
8957 gboolean
8958 _gtk_tree_view_find_node (GtkTreeView  *tree_view,
8959                           GtkTreePath  *path,
8960                           GtkRBTree   **tree,
8961                           GtkRBNode   **node)
8962 {
8963   GtkRBNode *tmpnode = NULL;
8964   GtkRBTree *tmptree = tree_view->priv->tree;
8965   gint *indices = gtk_tree_path_get_indices (path);
8966   gint depth = gtk_tree_path_get_depth (path);
8967   gint i = 0;
8968
8969   *node = NULL;
8970   *tree = NULL;
8971
8972   if (depth == 0 || tmptree == NULL)
8973     return FALSE;
8974   do
8975     {
8976       tmpnode = _gtk_rbtree_find_count (tmptree, indices[i] + 1);
8977       ++i;
8978       if (tmpnode == NULL)
8979         {
8980           *tree = NULL;
8981           *node = NULL;
8982           return FALSE;
8983         }
8984       if (i >= depth)
8985         {
8986           *tree = tmptree;
8987           *node = tmpnode;
8988           return FALSE;
8989         }
8990       *tree = tmptree;
8991       *node = tmpnode;
8992       tmptree = tmpnode->children;
8993       if (tmptree == NULL)
8994         return TRUE;
8995     }
8996   while (1);
8997 }
8998
8999 static gboolean
9000 gtk_tree_view_is_expander_column (GtkTreeView       *tree_view,
9001                                   GtkTreeViewColumn *column)
9002 {
9003   GList *list;
9004
9005   if (GTK_TREE_VIEW_FLAG_SET (tree_view, GTK_TREE_VIEW_IS_LIST))
9006     return FALSE;
9007
9008   if (tree_view->priv->expander_column != NULL)
9009     {
9010       if (tree_view->priv->expander_column == column)
9011         return TRUE;
9012       return FALSE;
9013     }
9014   else
9015     {
9016       for (list = tree_view->priv->columns;
9017            list;
9018            list = list->next)
9019         if (((GtkTreeViewColumn *)list->data)->visible)
9020           break;
9021       if (list && list->data == column)
9022         return TRUE;
9023     }
9024   return FALSE;
9025 }
9026
9027 static void
9028 gtk_tree_view_add_move_binding (GtkBindingSet  *binding_set,
9029                                 guint           keyval,
9030                                 guint           modmask,
9031                                 gboolean        add_shifted_binding,
9032                                 GtkMovementStep step,
9033                                 gint            count)
9034 {
9035
9036   gtk_binding_entry_add_signal (binding_set, keyval, modmask,
9037                                 "move-cursor", 2,
9038                                 G_TYPE_ENUM, step,
9039                                 G_TYPE_INT, count);
9040
9041   if (add_shifted_binding)
9042     gtk_binding_entry_add_signal (binding_set, keyval, GDK_SHIFT_MASK,
9043                                   "move-cursor", 2,
9044                                   G_TYPE_ENUM, step,
9045                                   G_TYPE_INT, count);
9046
9047   if ((modmask & GDK_CONTROL_MASK) == GDK_CONTROL_MASK)
9048    return;
9049
9050   gtk_binding_entry_add_signal (binding_set, keyval, GDK_CONTROL_MASK | GDK_SHIFT_MASK,
9051                                 "move-cursor", 2,
9052                                 G_TYPE_ENUM, step,
9053                                 G_TYPE_INT, count);
9054
9055   gtk_binding_entry_add_signal (binding_set, keyval, GDK_CONTROL_MASK,
9056                                 "move-cursor", 2,
9057                                 G_TYPE_ENUM, step,
9058                                 G_TYPE_INT, count);
9059 }
9060
9061 static gint
9062 gtk_tree_view_unref_tree_helper (GtkTreeModel *model,
9063                                  GtkTreeIter  *iter,
9064                                  GtkRBTree    *tree,
9065                                  GtkRBNode    *node)
9066 {
9067   gint retval = FALSE;
9068   do
9069     {
9070       g_return_val_if_fail (node != NULL, FALSE);
9071
9072       if (node->children)
9073         {
9074           GtkTreeIter child;
9075           GtkRBTree *new_tree;
9076           GtkRBNode *new_node;
9077
9078           new_tree = node->children;
9079           new_node = new_tree->root;
9080
9081           while (new_node && new_node->left != new_tree->nil)
9082             new_node = new_node->left;
9083
9084           if (!gtk_tree_model_iter_children (model, &child, iter))
9085             return FALSE;
9086
9087           retval = retval || gtk_tree_view_unref_tree_helper (model, &child, new_tree, new_node);
9088         }
9089
9090       if (GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_SELECTED))
9091         retval = TRUE;
9092       gtk_tree_model_unref_node (model, iter);
9093       node = _gtk_rbtree_next (tree, node);
9094     }
9095   while (gtk_tree_model_iter_next (model, iter));
9096
9097   return retval;
9098 }
9099
9100 static gint
9101 gtk_tree_view_unref_and_check_selection_tree (GtkTreeView *tree_view,
9102                                               GtkRBTree   *tree)
9103 {
9104   GtkTreeIter iter;
9105   GtkTreePath *path;
9106   GtkRBNode *node;
9107   gint retval;
9108
9109   if (!tree)
9110     return FALSE;
9111
9112   node = tree->root;
9113   while (node && node->left != tree->nil)
9114     node = node->left;
9115
9116   g_return_val_if_fail (node != NULL, FALSE);
9117   path = _gtk_tree_view_find_path (tree_view, tree, node);
9118   gtk_tree_model_get_iter (GTK_TREE_MODEL (tree_view->priv->model),
9119                            &iter, path);
9120   retval = gtk_tree_view_unref_tree_helper (GTK_TREE_MODEL (tree_view->priv->model), &iter, tree, node);
9121   gtk_tree_path_free (path);
9122
9123   return retval;
9124 }
9125
9126 static void
9127 gtk_tree_view_set_column_drag_info (GtkTreeView       *tree_view,
9128                                     GtkTreeViewColumn *column)
9129 {
9130   GtkTreeViewColumn *left_column;
9131   GtkTreeViewColumn *cur_column = NULL;
9132   GtkTreeViewColumnReorder *reorder;
9133   gboolean rtl;
9134   GList *tmp_list;
9135   gint left;
9136
9137   /* We want to precalculate the motion list such that we know what column slots
9138    * are available.
9139    */
9140   left_column = NULL;
9141   rtl = (gtk_widget_get_direction (GTK_WIDGET (tree_view)) == GTK_TEXT_DIR_RTL);
9142
9143   /* First, identify all possible drop spots */
9144   if (rtl)
9145     tmp_list = g_list_last (tree_view->priv->columns);
9146   else
9147     tmp_list = g_list_first (tree_view->priv->columns);
9148
9149   while (tmp_list)
9150     {
9151       cur_column = GTK_TREE_VIEW_COLUMN (tmp_list->data);
9152       tmp_list = rtl?g_list_previous (tmp_list):g_list_next (tmp_list);
9153
9154       if (cur_column->visible == FALSE)
9155         continue;
9156
9157       /* If it's not the column moving and func tells us to skip over the column, we continue. */
9158       if (left_column != column && cur_column != column &&
9159           tree_view->priv->column_drop_func &&
9160           ! tree_view->priv->column_drop_func (tree_view, column, left_column, cur_column, tree_view->priv->column_drop_func_data))
9161         {
9162           left_column = cur_column;
9163           continue;
9164         }
9165       reorder = g_slice_new0 (GtkTreeViewColumnReorder);
9166       reorder->left_column = left_column;
9167       left_column = reorder->right_column = cur_column;
9168
9169       tree_view->priv->column_drag_info = g_list_append (tree_view->priv->column_drag_info, reorder);
9170     }
9171
9172   /* Add the last one */
9173   if (tree_view->priv->column_drop_func == NULL ||
9174       ((left_column != column) &&
9175        tree_view->priv->column_drop_func (tree_view, column, left_column, NULL, tree_view->priv->column_drop_func_data)))
9176     {
9177       reorder = g_slice_new0 (GtkTreeViewColumnReorder);
9178       reorder->left_column = left_column;
9179       reorder->right_column = NULL;
9180       tree_view->priv->column_drag_info = g_list_append (tree_view->priv->column_drag_info, reorder);
9181     }
9182
9183   /* We quickly check to see if it even makes sense to reorder columns. */
9184   /* If there is nothing that can be moved, then we return */
9185
9186   if (tree_view->priv->column_drag_info == NULL)
9187     return;
9188
9189   /* We know there are always 2 slots possbile, as you can always return column. */
9190   /* If that's all there is, return */
9191   if (tree_view->priv->column_drag_info->next == NULL ||
9192       (tree_view->priv->column_drag_info->next->next == NULL &&
9193        ((GtkTreeViewColumnReorder *)tree_view->priv->column_drag_info->data)->right_column == column &&
9194        ((GtkTreeViewColumnReorder *)tree_view->priv->column_drag_info->next->data)->left_column == column))
9195     {
9196       for (tmp_list = tree_view->priv->column_drag_info; tmp_list; tmp_list = tmp_list->next)
9197         g_slice_free (GtkTreeViewColumnReorder, tmp_list->data);
9198       g_list_free (tree_view->priv->column_drag_info);
9199       tree_view->priv->column_drag_info = NULL;
9200       return;
9201     }
9202   /* We fill in the ranges for the columns, now that we've isolated them */
9203   left = - TREE_VIEW_COLUMN_DRAG_DEAD_MULTIPLIER (tree_view);
9204
9205   for (tmp_list = tree_view->priv->column_drag_info; tmp_list; tmp_list = tmp_list->next)
9206     {
9207       reorder = (GtkTreeViewColumnReorder *) tmp_list->data;
9208
9209       reorder->left_align = left;
9210       if (tmp_list->next != NULL)
9211         {
9212           GtkAllocation right_allocation, left_allocation;
9213
9214           g_assert (tmp_list->next->data);
9215
9216           gtk_widget_get_allocation (reorder->right_column->button, &right_allocation);
9217           gtk_widget_get_allocation (((GtkTreeViewColumnReorder *)tmp_list->next->data)->left_column->button, &left_allocation);
9218           left = reorder->right_align = (right_allocation.x + right_allocation.width + left_allocation.x) / 2;
9219         }
9220       else
9221         {
9222           reorder->right_align = gdk_window_get_width (tree_view->priv->header_window)
9223                                  + TREE_VIEW_COLUMN_DRAG_DEAD_MULTIPLIER (tree_view);
9224         }
9225     }
9226 }
9227
9228 void
9229 _gtk_tree_view_column_start_drag (GtkTreeView       *tree_view,
9230                                   GtkTreeViewColumn *column,
9231                                   GdkDevice         *device)
9232 {
9233   GdkEvent *send_event;
9234   GtkAllocation allocation;
9235   GtkAllocation button_allocation;
9236   GdkScreen *screen = gtk_widget_get_screen (GTK_WIDGET (tree_view));
9237   GdkDisplay *display = gdk_screen_get_display (screen);
9238
9239   g_return_if_fail (tree_view->priv->column_drag_info == NULL);
9240   g_return_if_fail (tree_view->priv->cur_reorder == NULL);
9241
9242   gtk_tree_view_set_column_drag_info (tree_view, column);
9243
9244   if (tree_view->priv->column_drag_info == NULL)
9245     return;
9246
9247   if (tree_view->priv->drag_window == NULL)
9248     {
9249       GdkWindowAttr attributes;
9250       guint attributes_mask;
9251
9252       gtk_widget_get_allocation (column->button, &button_allocation);
9253
9254       attributes.window_type = GDK_WINDOW_CHILD;
9255       attributes.wclass = GDK_INPUT_OUTPUT;
9256       attributes.x = button_allocation.x;
9257       attributes.y = 0;
9258       attributes.width = button_allocation.width;
9259       attributes.height = button_allocation.height;
9260       attributes.visual = gtk_widget_get_visual (GTK_WIDGET (tree_view));
9261       attributes.event_mask = GDK_VISIBILITY_NOTIFY_MASK | GDK_EXPOSURE_MASK | GDK_POINTER_MOTION_MASK;
9262       attributes_mask = GDK_WA_X | GDK_WA_Y | GDK_WA_VISUAL;
9263
9264       tree_view->priv->drag_window = gdk_window_new (tree_view->priv->bin_window,
9265                                                      &attributes,
9266                                                      attributes_mask);
9267       gdk_window_set_user_data (tree_view->priv->drag_window, GTK_WIDGET (tree_view));
9268     }
9269
9270   gdk_display_pointer_ungrab (display, GDK_CURRENT_TIME);
9271   gdk_display_keyboard_ungrab (display, GDK_CURRENT_TIME);
9272
9273   gtk_grab_remove (column->button);
9274
9275   send_event = gdk_event_new (GDK_LEAVE_NOTIFY);
9276   send_event->crossing.send_event = TRUE;
9277   send_event->crossing.window = g_object_ref (GTK_BUTTON (column->button)->event_window);
9278   send_event->crossing.subwindow = NULL;
9279   send_event->crossing.detail = GDK_NOTIFY_ANCESTOR;
9280   send_event->crossing.time = GDK_CURRENT_TIME;
9281   gdk_event_set_device (send_event, device);
9282
9283   gtk_propagate_event (column->button, send_event);
9284   gdk_event_free (send_event);
9285
9286   send_event = gdk_event_new (GDK_BUTTON_RELEASE);
9287   send_event->button.window = g_object_ref (gdk_screen_get_root_window (screen));
9288   send_event->button.send_event = TRUE;
9289   send_event->button.time = GDK_CURRENT_TIME;
9290   send_event->button.x = -1;
9291   send_event->button.y = -1;
9292   send_event->button.axes = NULL;
9293   send_event->button.state = 0;
9294   send_event->button.button = 1;
9295   send_event->button.x_root = 0;
9296   send_event->button.y_root = 0;
9297   gdk_event_set_device (send_event, device);
9298
9299   gtk_propagate_event (column->button, send_event);
9300   gdk_event_free (send_event);
9301
9302   /* Kids, don't try this at home */
9303   g_object_ref (column->button);
9304   gtk_container_remove (GTK_CONTAINER (tree_view), column->button);
9305   gtk_widget_set_parent_window (column->button, tree_view->priv->drag_window);
9306   gtk_widget_set_parent (column->button, GTK_WIDGET (tree_view));
9307   g_object_unref (column->button);
9308
9309   gtk_widget_get_allocation (column->button, &button_allocation);
9310   tree_view->priv->drag_column_x = button_allocation.x;
9311   allocation = button_allocation;
9312   allocation.x = 0;
9313   gtk_widget_size_allocate (column->button, &allocation);
9314   gtk_widget_set_parent_window (column->button, tree_view->priv->drag_window);
9315
9316   tree_view->priv->drag_column = column;
9317   gdk_window_show (tree_view->priv->drag_window);
9318
9319   gtk_widget_grab_focus (GTK_WIDGET (tree_view));
9320   while (gtk_events_pending ())
9321     gtk_main_iteration ();
9322
9323   GTK_TREE_VIEW_SET_FLAG (tree_view, GTK_TREE_VIEW_IN_COLUMN_DRAG);
9324   gdk_pointer_grab (tree_view->priv->drag_window,
9325                     FALSE,
9326                     GDK_POINTER_MOTION_MASK|GDK_BUTTON_RELEASE_MASK,
9327                     NULL, NULL, GDK_CURRENT_TIME);
9328   gdk_keyboard_grab (tree_view->priv->drag_window,
9329                      FALSE,
9330                      GDK_CURRENT_TIME);
9331 }
9332
9333 static void
9334 gtk_tree_view_queue_draw_arrow (GtkTreeView        *tree_view,
9335                                 GtkRBTree          *tree,
9336                                 GtkRBNode          *node)
9337 {
9338   GtkAllocation allocation;
9339   GdkRectangle rect;
9340
9341   if (!gtk_widget_get_realized (GTK_WIDGET (tree_view)))
9342     return;
9343
9344   gtk_widget_get_allocation (GTK_WIDGET (tree_view), &allocation);
9345   rect.x = 0;
9346   rect.width = MAX (tree_view->priv->expander_size, MAX (tree_view->priv->width, allocation.width));
9347
9348   rect.y = BACKGROUND_FIRST_PIXEL (tree_view, tree, node);
9349   rect.height = ROW_HEIGHT (tree_view, BACKGROUND_HEIGHT (node));
9350
9351   gdk_window_invalidate_rect (tree_view->priv->bin_window, &rect, TRUE);
9352 }
9353
9354 void
9355 _gtk_tree_view_queue_draw_node (GtkTreeView        *tree_view,
9356                                 GtkRBTree          *tree,
9357                                 GtkRBNode          *node,
9358                                 const GdkRectangle *clip_rect)
9359 {
9360   GtkAllocation allocation;
9361   GdkRectangle rect;
9362
9363   if (!gtk_widget_get_realized (GTK_WIDGET (tree_view)))
9364     return;
9365
9366   gtk_widget_get_allocation (GTK_WIDGET (tree_view), &allocation);
9367   rect.x = 0;
9368   rect.width = MAX (tree_view->priv->width, allocation.width);
9369
9370   rect.y = BACKGROUND_FIRST_PIXEL (tree_view, tree, node);
9371   rect.height = ROW_HEIGHT (tree_view, BACKGROUND_HEIGHT (node));
9372
9373   if (clip_rect)
9374     {
9375       GdkRectangle new_rect;
9376
9377       gdk_rectangle_intersect (clip_rect, &rect, &new_rect);
9378
9379       gdk_window_invalidate_rect (tree_view->priv->bin_window, &new_rect, TRUE);
9380     }
9381   else
9382     {
9383       gdk_window_invalidate_rect (tree_view->priv->bin_window, &rect, TRUE);
9384     }
9385 }
9386
9387 static void
9388 gtk_tree_view_queue_draw_path (GtkTreeView        *tree_view,
9389                                GtkTreePath        *path,
9390                                const GdkRectangle *clip_rect)
9391 {
9392   GtkRBTree *tree = NULL;
9393   GtkRBNode *node = NULL;
9394
9395   _gtk_tree_view_find_node (tree_view, path, &tree, &node);
9396
9397   if (tree)
9398     _gtk_tree_view_queue_draw_node (tree_view, tree, node, clip_rect);
9399 }
9400
9401 /* x and y are the mouse position
9402  */
9403 static void
9404 gtk_tree_view_draw_arrow (GtkTreeView *tree_view,
9405                           cairo_t     *cr,
9406                           GtkRBTree   *tree,
9407                           GtkRBNode   *node,
9408                           /* in bin_window coordinates */
9409                           gint         x,
9410                           gint         y)
9411 {
9412   GdkRectangle area;
9413   GtkStateType state;
9414   GtkWidget *widget;
9415   gint x_offset = 0;
9416   gint x2;
9417   gint vertical_separator;
9418   gint expander_size;
9419   GtkExpanderStyle expander_style;
9420
9421   widget = GTK_WIDGET (tree_view);
9422
9423   gtk_widget_style_get (widget,
9424                         "vertical-separator", &vertical_separator,
9425                         NULL);
9426   expander_size = tree_view->priv->expander_size - EXPANDER_EXTRA_PADDING;
9427
9428   if (! GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_PARENT))
9429     return;
9430
9431   gtk_tree_view_get_arrow_xrange (tree_view, tree, &x_offset, &x2);
9432
9433   area.x = x_offset;
9434   area.y = CELL_FIRST_PIXEL (tree_view, tree, node, vertical_separator);
9435   area.width = expander_size + 2;
9436   area.height = MAX (CELL_HEIGHT (node, vertical_separator), (expander_size - vertical_separator));
9437
9438   if (gtk_widget_get_state (widget) == GTK_STATE_INSENSITIVE)
9439     {
9440       state = GTK_STATE_INSENSITIVE;
9441     }
9442   else if (node == tree_view->priv->button_pressed_node)
9443     {
9444       if (x >= area.x && x <= (area.x + area.width) &&
9445           y >= area.y && y <= (area.y + area.height))
9446         state = GTK_STATE_ACTIVE;
9447       else
9448         state = GTK_STATE_NORMAL;
9449     }
9450   else
9451     {
9452       if (node == tree_view->priv->prelight_node &&
9453           GTK_TREE_VIEW_FLAG_SET (tree_view, GTK_TREE_VIEW_ARROW_PRELIT))
9454         state = GTK_STATE_PRELIGHT;
9455       else
9456         state = GTK_STATE_NORMAL;
9457     }
9458
9459   if (GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_SEMI_EXPANDED))
9460     expander_style = GTK_EXPANDER_SEMI_EXPANDED;
9461   else if (GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_SEMI_COLLAPSED))
9462     expander_style = GTK_EXPANDER_SEMI_COLLAPSED;
9463   else if (node->children != NULL)
9464     expander_style = GTK_EXPANDER_EXPANDED;
9465   else
9466     expander_style = GTK_EXPANDER_COLLAPSED;
9467
9468   gtk_paint_expander (gtk_widget_get_style (widget),
9469                       cr,
9470                       state,
9471                       widget,
9472                       "treeview",
9473                       area.x + area.width / 2,
9474                       area.y + area.height / 2,
9475                       expander_style);
9476 }
9477
9478 static void
9479 gtk_tree_view_focus_to_cursor (GtkTreeView *tree_view)
9480
9481 {
9482   GtkTreePath *cursor_path;
9483
9484   if ((tree_view->priv->tree == NULL) ||
9485       (! gtk_widget_get_realized (GTK_WIDGET (tree_view))))
9486     return;
9487
9488   cursor_path = NULL;
9489   if (tree_view->priv->cursor)
9490     cursor_path = gtk_tree_row_reference_get_path (tree_view->priv->cursor);
9491
9492   if (cursor_path == NULL)
9493     {
9494       /* Consult the selection before defaulting to the
9495        * first focusable element
9496        */
9497       GList *selected_rows;
9498       GtkTreeModel *model;
9499       GtkTreeSelection *selection;
9500
9501       selection = gtk_tree_view_get_selection (tree_view);
9502       selected_rows = gtk_tree_selection_get_selected_rows (selection, &model);
9503
9504       if (selected_rows)
9505         {
9506           cursor_path = gtk_tree_path_copy((const GtkTreePath *)(selected_rows->data));
9507           g_list_foreach (selected_rows, (GFunc)gtk_tree_path_free, NULL);
9508           g_list_free (selected_rows);
9509         }
9510       else
9511         {
9512           cursor_path = gtk_tree_path_new_first ();
9513           search_first_focusable_path (tree_view, &cursor_path,
9514                                        TRUE, NULL, NULL);
9515         }
9516
9517       gtk_tree_row_reference_free (tree_view->priv->cursor);
9518       tree_view->priv->cursor = NULL;
9519
9520       if (cursor_path)
9521         {
9522           if (tree_view->priv->selection->type == GTK_SELECTION_MULTIPLE)
9523             gtk_tree_view_real_set_cursor (tree_view, cursor_path, FALSE, FALSE);
9524           else
9525             gtk_tree_view_real_set_cursor (tree_view, cursor_path, TRUE, FALSE);
9526         }
9527     }
9528
9529   if (cursor_path)
9530     {
9531       GTK_TREE_VIEW_SET_FLAG (tree_view, GTK_TREE_VIEW_DRAW_KEYFOCUS);
9532
9533       gtk_tree_view_queue_draw_path (tree_view, cursor_path, NULL);
9534       gtk_tree_path_free (cursor_path);
9535
9536       if (tree_view->priv->focus_column == NULL)
9537         {
9538           GList *list;
9539           for (list = tree_view->priv->columns; list; list = list->next)
9540             {
9541               if (GTK_TREE_VIEW_COLUMN (list->data)->visible)
9542                 {
9543                   tree_view->priv->focus_column = GTK_TREE_VIEW_COLUMN (list->data);
9544                   break;
9545                 }
9546             }
9547         }
9548     }
9549 }
9550
9551 static void
9552 gtk_tree_view_move_cursor_up_down (GtkTreeView *tree_view,
9553                                    gint         count)
9554 {
9555   gint selection_count;
9556   GtkRBTree *cursor_tree = NULL;
9557   GtkRBNode *cursor_node = NULL;
9558   GtkRBTree *new_cursor_tree = NULL;
9559   GtkRBNode *new_cursor_node = NULL;
9560   GtkTreePath *cursor_path = NULL;
9561   gboolean grab_focus = TRUE;
9562   gboolean selectable;
9563
9564   if (! gtk_widget_has_focus (GTK_WIDGET (tree_view)))
9565     return;
9566
9567   cursor_path = NULL;
9568   if (!gtk_tree_row_reference_valid (tree_view->priv->cursor))
9569     /* FIXME: we lost the cursor; should we get the first? */
9570     return;
9571
9572   cursor_path = gtk_tree_row_reference_get_path (tree_view->priv->cursor);
9573   _gtk_tree_view_find_node (tree_view, cursor_path,
9574                             &cursor_tree, &cursor_node);
9575
9576   if (cursor_tree == NULL)
9577     /* FIXME: we lost the cursor; should we get the first? */
9578     return;
9579
9580   selection_count = gtk_tree_selection_count_selected_rows (tree_view->priv->selection);
9581   selectable = _gtk_tree_selection_row_is_selectable (tree_view->priv->selection,
9582                                                       cursor_node,
9583                                                       cursor_path);
9584
9585   if (selection_count == 0
9586       && tree_view->priv->selection->type != GTK_SELECTION_NONE
9587       && !tree_view->priv->ctrl_pressed
9588       && selectable)
9589     {
9590       /* Don't move the cursor, but just select the current node */
9591       new_cursor_tree = cursor_tree;
9592       new_cursor_node = cursor_node;
9593     }
9594   else
9595     {
9596       if (count == -1)
9597         _gtk_rbtree_prev_full (cursor_tree, cursor_node,
9598                                &new_cursor_tree, &new_cursor_node);
9599       else
9600         _gtk_rbtree_next_full (cursor_tree, cursor_node,
9601                                &new_cursor_tree, &new_cursor_node);
9602     }
9603
9604   gtk_tree_path_free (cursor_path);
9605
9606   if (new_cursor_node)
9607     {
9608       cursor_path = _gtk_tree_view_find_path (tree_view,
9609                                               new_cursor_tree, new_cursor_node);
9610
9611       search_first_focusable_path (tree_view, &cursor_path,
9612                                    (count != -1),
9613                                    &new_cursor_tree,
9614                                    &new_cursor_node);
9615
9616       if (cursor_path)
9617         gtk_tree_path_free (cursor_path);
9618     }
9619
9620   /*
9621    * If the list has only one item and multi-selection is set then select
9622    * the row (if not yet selected).
9623    */
9624   if (tree_view->priv->selection->type == GTK_SELECTION_MULTIPLE &&
9625       new_cursor_node == NULL)
9626     {
9627       if (count == -1)
9628         _gtk_rbtree_next_full (cursor_tree, cursor_node,
9629                                &new_cursor_tree, &new_cursor_node);
9630       else
9631         _gtk_rbtree_prev_full (cursor_tree, cursor_node,
9632                                &new_cursor_tree, &new_cursor_node);
9633
9634       if (new_cursor_node == NULL
9635           && !GTK_RBNODE_FLAG_SET (cursor_node, GTK_RBNODE_IS_SELECTED))
9636         {
9637           new_cursor_node = cursor_node;
9638           new_cursor_tree = cursor_tree;
9639         }
9640       else
9641         {
9642           new_cursor_node = NULL;
9643         }
9644     }
9645
9646   if (new_cursor_node)
9647     {
9648       cursor_path = _gtk_tree_view_find_path (tree_view, new_cursor_tree, new_cursor_node);
9649       gtk_tree_view_real_set_cursor (tree_view, cursor_path, TRUE, TRUE);
9650       gtk_tree_path_free (cursor_path);
9651     }
9652   else
9653     {
9654       gtk_tree_view_clamp_node_visible (tree_view, cursor_tree, cursor_node);
9655
9656       if (!tree_view->priv->shift_pressed)
9657         {
9658           if (! gtk_widget_keynav_failed (GTK_WIDGET (tree_view),
9659                                           count < 0 ?
9660                                           GTK_DIR_UP : GTK_DIR_DOWN))
9661             {
9662               GtkWidget *toplevel = gtk_widget_get_toplevel (GTK_WIDGET (tree_view));
9663
9664               if (toplevel)
9665                 gtk_widget_child_focus (toplevel,
9666                                         count < 0 ?
9667                                         GTK_DIR_TAB_BACKWARD :
9668                                         GTK_DIR_TAB_FORWARD);
9669
9670               grab_focus = FALSE;
9671             }
9672         }
9673       else
9674         {
9675           gtk_widget_error_bell (GTK_WIDGET (tree_view));
9676         }
9677     }
9678
9679   if (grab_focus)
9680     gtk_widget_grab_focus (GTK_WIDGET (tree_view));
9681 }
9682
9683 static void
9684 gtk_tree_view_move_cursor_page_up_down (GtkTreeView *tree_view,
9685                                         gint         count)
9686 {
9687   GtkRBTree *cursor_tree = NULL;
9688   GtkRBNode *cursor_node = NULL;
9689   GtkTreePath *old_cursor_path = NULL;
9690   GtkTreePath *cursor_path = NULL;
9691   GtkRBTree *start_cursor_tree = NULL;
9692   GtkRBNode *start_cursor_node = NULL;
9693   gint y;
9694   gint window_y;
9695   gint vertical_separator;
9696
9697   if (!gtk_widget_has_focus (GTK_WIDGET (tree_view)))
9698     return;
9699
9700   if (gtk_tree_row_reference_valid (tree_view->priv->cursor))
9701     old_cursor_path = gtk_tree_row_reference_get_path (tree_view->priv->cursor);
9702   else
9703     /* This is sorta weird.  Focus in should give us a cursor */
9704     return;
9705
9706   gtk_widget_style_get (GTK_WIDGET (tree_view), "vertical-separator", &vertical_separator, NULL);
9707   _gtk_tree_view_find_node (tree_view, old_cursor_path,
9708                             &cursor_tree, &cursor_node);
9709
9710   if (cursor_tree == NULL)
9711     {
9712       /* FIXME: we lost the cursor.  Should we try to get one? */
9713       gtk_tree_path_free (old_cursor_path);
9714       return;
9715     }
9716   g_return_if_fail (cursor_node != NULL);
9717
9718   y = _gtk_rbtree_node_find_offset (cursor_tree, cursor_node);
9719   window_y = RBTREE_Y_TO_TREE_WINDOW_Y (tree_view, y);
9720   y += tree_view->priv->cursor_offset;
9721   y += count * (int)tree_view->priv->vadjustment->page_increment;
9722   y = CLAMP (y, (gint)tree_view->priv->vadjustment->lower,  (gint)tree_view->priv->vadjustment->upper - vertical_separator);
9723
9724   if (y >= tree_view->priv->height)
9725     y = tree_view->priv->height - 1;
9726
9727   tree_view->priv->cursor_offset =
9728     _gtk_rbtree_find_offset (tree_view->priv->tree, y,
9729                              &cursor_tree, &cursor_node);
9730
9731   if (cursor_tree == NULL)
9732     {
9733       /* FIXME: we lost the cursor.  Should we try to get one? */
9734       gtk_tree_path_free (old_cursor_path);
9735       return;
9736     }
9737
9738   if (tree_view->priv->cursor_offset > BACKGROUND_HEIGHT (cursor_node))
9739     {
9740       _gtk_rbtree_next_full (cursor_tree, cursor_node,
9741                              &cursor_tree, &cursor_node);
9742       tree_view->priv->cursor_offset -= BACKGROUND_HEIGHT (cursor_node);
9743     }
9744
9745   y -= tree_view->priv->cursor_offset;
9746   cursor_path = _gtk_tree_view_find_path (tree_view, cursor_tree, cursor_node);
9747
9748   start_cursor_tree = cursor_tree;
9749   start_cursor_node = cursor_node;
9750
9751   if (! search_first_focusable_path (tree_view, &cursor_path,
9752                                      (count != -1),
9753                                      &cursor_tree, &cursor_node))
9754     {
9755       /* It looks like we reached the end of the view without finding
9756        * a focusable row.  We will step backwards to find the last
9757        * focusable row.
9758        */
9759       cursor_tree = start_cursor_tree;
9760       cursor_node = start_cursor_node;
9761       cursor_path = _gtk_tree_view_find_path (tree_view, cursor_tree, cursor_node);
9762
9763       search_first_focusable_path (tree_view, &cursor_path,
9764                                    (count == -1),
9765                                    &cursor_tree, &cursor_node);
9766     }
9767
9768   if (!cursor_path)
9769     goto cleanup;
9770
9771   /* update y */
9772   y = _gtk_rbtree_node_find_offset (cursor_tree, cursor_node);
9773
9774   gtk_tree_view_real_set_cursor (tree_view, cursor_path, TRUE, FALSE);
9775
9776   y -= window_y;
9777   gtk_tree_view_scroll_to_point (tree_view, -1, y);
9778   gtk_tree_view_clamp_node_visible (tree_view, cursor_tree, cursor_node);
9779   _gtk_tree_view_queue_draw_node (tree_view, cursor_tree, cursor_node, NULL);
9780
9781   if (!gtk_tree_path_compare (old_cursor_path, cursor_path))
9782     gtk_widget_error_bell (GTK_WIDGET (tree_view));
9783
9784   gtk_widget_grab_focus (GTK_WIDGET (tree_view));
9785
9786 cleanup:
9787   gtk_tree_path_free (old_cursor_path);
9788   gtk_tree_path_free (cursor_path);
9789 }
9790
9791 static void
9792 gtk_tree_view_move_cursor_left_right (GtkTreeView *tree_view,
9793                                       gint         count)
9794 {
9795   GtkRBTree *cursor_tree = NULL;
9796   GtkRBNode *cursor_node = NULL;
9797   GtkTreePath *cursor_path = NULL;
9798   GtkTreeViewColumn *column;
9799   GtkTreeIter iter;
9800   GList *list;
9801   gboolean found_column = FALSE;
9802   gboolean rtl;
9803
9804   rtl = (gtk_widget_get_direction (GTK_WIDGET (tree_view)) == GTK_TEXT_DIR_RTL);
9805
9806   if (!gtk_widget_has_focus (GTK_WIDGET (tree_view)))
9807     return;
9808
9809   if (gtk_tree_row_reference_valid (tree_view->priv->cursor))
9810     cursor_path = gtk_tree_row_reference_get_path (tree_view->priv->cursor);
9811   else
9812     return;
9813
9814   _gtk_tree_view_find_node (tree_view, cursor_path, &cursor_tree, &cursor_node);
9815   if (cursor_tree == NULL)
9816     return;
9817   if (gtk_tree_model_get_iter (tree_view->priv->model, &iter, cursor_path) == FALSE)
9818     {
9819       gtk_tree_path_free (cursor_path);
9820       return;
9821     }
9822   gtk_tree_path_free (cursor_path);
9823
9824   list = rtl ? g_list_last (tree_view->priv->columns) : g_list_first (tree_view->priv->columns);
9825   if (tree_view->priv->focus_column)
9826     {
9827       for (; list; list = (rtl ? list->prev : list->next))
9828         {
9829           if (list->data == tree_view->priv->focus_column)
9830             break;
9831         }
9832     }
9833
9834   while (list)
9835     {
9836       gboolean left, right;
9837
9838       column = list->data;
9839       if (column->visible == FALSE)
9840         goto loop_end;
9841
9842       gtk_tree_view_column_cell_set_cell_data (column,
9843                                                tree_view->priv->model,
9844                                                &iter,
9845                                                GTK_RBNODE_FLAG_SET (cursor_node, GTK_RBNODE_IS_PARENT),
9846                                                cursor_node->children?TRUE:FALSE);
9847
9848       if (rtl)
9849         {
9850           right = list->prev ? TRUE : FALSE;
9851           left = list->next ? TRUE : FALSE;
9852         }
9853       else
9854         {
9855           left = list->prev ? TRUE : FALSE;
9856           right = list->next ? TRUE : FALSE;
9857         }
9858
9859       if (_gtk_tree_view_column_cell_focus (column, count, left, right))
9860         {
9861           tree_view->priv->focus_column = column;
9862           found_column = TRUE;
9863           break;
9864         }
9865     loop_end:
9866       if (count == 1)
9867         list = rtl ? list->prev : list->next;
9868       else
9869         list = rtl ? list->next : list->prev;
9870     }
9871
9872   if (found_column)
9873     {
9874       if (!gtk_tree_view_has_special_cell (tree_view))
9875         _gtk_tree_view_queue_draw_node (tree_view,
9876                                         cursor_tree,
9877                                         cursor_node,
9878                                         NULL);
9879       g_signal_emit (tree_view, tree_view_signals[CURSOR_CHANGED], 0);
9880       gtk_widget_grab_focus (GTK_WIDGET (tree_view));
9881     }
9882   else
9883     {
9884       gtk_widget_error_bell (GTK_WIDGET (tree_view));
9885     }
9886
9887   gtk_tree_view_clamp_column_visible (tree_view,
9888                                       tree_view->priv->focus_column, TRUE);
9889 }
9890
9891 static void
9892 gtk_tree_view_move_cursor_start_end (GtkTreeView *tree_view,
9893                                      gint         count)
9894 {
9895   GtkRBTree *cursor_tree;
9896   GtkRBNode *cursor_node;
9897   GtkTreePath *path;
9898   GtkTreePath *old_path;
9899
9900   if (!gtk_widget_has_focus (GTK_WIDGET (tree_view)))
9901     return;
9902
9903   g_return_if_fail (tree_view->priv->tree != NULL);
9904
9905   gtk_tree_view_get_cursor (tree_view, &old_path, NULL);
9906
9907   cursor_tree = tree_view->priv->tree;
9908   cursor_node = cursor_tree->root;
9909
9910   if (count == -1)
9911     {
9912       while (cursor_node && cursor_node->left != cursor_tree->nil)
9913         cursor_node = cursor_node->left;
9914
9915       /* Now go forward to find the first focusable row. */
9916       path = _gtk_tree_view_find_path (tree_view, cursor_tree, cursor_node);
9917       search_first_focusable_path (tree_view, &path,
9918                                    TRUE, &cursor_tree, &cursor_node);
9919     }
9920   else
9921     {
9922       do
9923         {
9924           while (cursor_node && cursor_node->right != cursor_tree->nil)
9925             cursor_node = cursor_node->right;
9926           if (cursor_node->children == NULL)
9927             break;
9928
9929           cursor_tree = cursor_node->children;
9930           cursor_node = cursor_tree->root;
9931         }
9932       while (1);
9933
9934       /* Now go backwards to find last focusable row. */
9935       path = _gtk_tree_view_find_path (tree_view, cursor_tree, cursor_node);
9936       search_first_focusable_path (tree_view, &path,
9937                                    FALSE, &cursor_tree, &cursor_node);
9938     }
9939
9940   if (!path)
9941     goto cleanup;
9942
9943   if (gtk_tree_path_compare (old_path, path))
9944     {
9945       gtk_tree_view_real_set_cursor (tree_view, path, TRUE, TRUE);
9946       gtk_widget_grab_focus (GTK_WIDGET (tree_view));
9947     }
9948   else
9949     {
9950       gtk_widget_error_bell (GTK_WIDGET (tree_view));
9951     }
9952
9953 cleanup:
9954   gtk_tree_path_free (old_path);
9955   gtk_tree_path_free (path);
9956 }
9957
9958 static gboolean
9959 gtk_tree_view_real_select_all (GtkTreeView *tree_view)
9960 {
9961   if (!gtk_widget_has_focus (GTK_WIDGET (tree_view)))
9962     return FALSE;
9963
9964   if (tree_view->priv->selection->type != GTK_SELECTION_MULTIPLE)
9965     return FALSE;
9966
9967   gtk_tree_selection_select_all (tree_view->priv->selection);
9968
9969   return TRUE;
9970 }
9971
9972 static gboolean
9973 gtk_tree_view_real_unselect_all (GtkTreeView *tree_view)
9974 {
9975   if (!gtk_widget_has_focus (GTK_WIDGET (tree_view)))
9976     return FALSE;
9977
9978   if (tree_view->priv->selection->type != GTK_SELECTION_MULTIPLE)
9979     return FALSE;
9980
9981   gtk_tree_selection_unselect_all (tree_view->priv->selection);
9982
9983   return TRUE;
9984 }
9985
9986 static gboolean
9987 gtk_tree_view_real_select_cursor_row (GtkTreeView *tree_view,
9988                                       gboolean     start_editing)
9989 {
9990   GtkRBTree *new_tree = NULL;
9991   GtkRBNode *new_node = NULL;
9992   GtkRBTree *cursor_tree = NULL;
9993   GtkRBNode *cursor_node = NULL;
9994   GtkTreePath *cursor_path = NULL;
9995   GtkTreeSelectMode mode = 0;
9996
9997   if (!gtk_widget_has_focus (GTK_WIDGET (tree_view)))
9998     return FALSE;
9999
10000   if (tree_view->priv->cursor)
10001     cursor_path = gtk_tree_row_reference_get_path (tree_view->priv->cursor);
10002
10003   if (cursor_path == NULL)
10004     return FALSE;
10005
10006   _gtk_tree_view_find_node (tree_view, cursor_path,
10007                             &cursor_tree, &cursor_node);
10008
10009   if (cursor_tree == NULL)
10010     {
10011       gtk_tree_path_free (cursor_path);
10012       return FALSE;
10013     }
10014
10015   if (!tree_view->priv->shift_pressed && start_editing &&
10016       tree_view->priv->focus_column)
10017     {
10018       if (gtk_tree_view_start_editing (tree_view, cursor_path))
10019         {
10020           gtk_tree_path_free (cursor_path);
10021           return TRUE;
10022         }
10023     }
10024
10025   if (tree_view->priv->ctrl_pressed)
10026     mode |= GTK_TREE_SELECT_MODE_TOGGLE;
10027   if (tree_view->priv->shift_pressed)
10028     mode |= GTK_TREE_SELECT_MODE_EXTEND;
10029
10030   _gtk_tree_selection_internal_select_node (tree_view->priv->selection,
10031                                             cursor_node,
10032                                             cursor_tree,
10033                                             cursor_path,
10034                                             mode,
10035                                             FALSE);
10036
10037   /* We bail out if the original (tree, node) don't exist anymore after
10038    * handling the selection-changed callback.  We do return TRUE because
10039    * the key press has been handled at this point.
10040    */
10041   _gtk_tree_view_find_node (tree_view, cursor_path, &new_tree, &new_node);
10042
10043   if (cursor_tree != new_tree || cursor_node != new_node)
10044     return FALSE;
10045
10046   gtk_tree_view_clamp_node_visible (tree_view, cursor_tree, cursor_node);
10047
10048   gtk_widget_grab_focus (GTK_WIDGET (tree_view));
10049   _gtk_tree_view_queue_draw_node (tree_view, cursor_tree, cursor_node, NULL);
10050
10051   if (!tree_view->priv->shift_pressed)
10052     gtk_tree_view_row_activated (tree_view, cursor_path,
10053                                  tree_view->priv->focus_column);
10054
10055   gtk_tree_path_free (cursor_path);
10056
10057   return TRUE;
10058 }
10059
10060 static gboolean
10061 gtk_tree_view_real_toggle_cursor_row (GtkTreeView *tree_view)
10062 {
10063   GtkRBTree *new_tree = NULL;
10064   GtkRBNode *new_node = NULL;
10065   GtkRBTree *cursor_tree = NULL;
10066   GtkRBNode *cursor_node = NULL;
10067   GtkTreePath *cursor_path = NULL;
10068
10069   if (!gtk_widget_has_focus (GTK_WIDGET (tree_view)))
10070     return FALSE;
10071
10072   cursor_path = NULL;
10073   if (tree_view->priv->cursor)
10074     cursor_path = gtk_tree_row_reference_get_path (tree_view->priv->cursor);
10075
10076   if (cursor_path == NULL)
10077     return FALSE;
10078
10079   _gtk_tree_view_find_node (tree_view, cursor_path,
10080                             &cursor_tree, &cursor_node);
10081   if (cursor_tree == NULL)
10082     {
10083       gtk_tree_path_free (cursor_path);
10084       return FALSE;
10085     }
10086
10087   _gtk_tree_selection_internal_select_node (tree_view->priv->selection,
10088                                             cursor_node,
10089                                             cursor_tree,
10090                                             cursor_path,
10091                                             GTK_TREE_SELECT_MODE_TOGGLE,
10092                                             FALSE);
10093
10094   /* We bail out if the original (tree, node) don't exist anymore after
10095    * handling the selection-changed callback.  We do return TRUE because
10096    * the key press has been handled at this point.
10097    */
10098   _gtk_tree_view_find_node (tree_view, cursor_path, &new_tree, &new_node);
10099
10100   if (cursor_tree != new_tree || cursor_node != new_node)
10101     return FALSE;
10102
10103   gtk_tree_view_clamp_node_visible (tree_view, cursor_tree, cursor_node);
10104
10105   gtk_widget_grab_focus (GTK_WIDGET (tree_view));
10106   gtk_tree_view_queue_draw_path (tree_view, cursor_path, NULL);
10107   gtk_tree_path_free (cursor_path);
10108
10109   return TRUE;
10110 }
10111
10112 static gboolean
10113 gtk_tree_view_real_expand_collapse_cursor_row (GtkTreeView *tree_view,
10114                                                gboolean     logical,
10115                                                gboolean     expand,
10116                                                gboolean     open_all)
10117 {
10118   GtkTreePath *cursor_path = NULL;
10119   GtkRBTree *tree;
10120   GtkRBNode *node;
10121
10122   if (!gtk_widget_has_focus (GTK_WIDGET (tree_view)))
10123     return FALSE;
10124
10125   cursor_path = NULL;
10126   if (tree_view->priv->cursor)
10127     cursor_path = gtk_tree_row_reference_get_path (tree_view->priv->cursor);
10128
10129   if (cursor_path == NULL)
10130     return FALSE;
10131
10132   if (_gtk_tree_view_find_node (tree_view, cursor_path, &tree, &node))
10133     return FALSE;
10134
10135   /* Don't handle the event if we aren't an expander */
10136   if (!((node->flags & GTK_RBNODE_IS_PARENT) == GTK_RBNODE_IS_PARENT))
10137     return FALSE;
10138
10139   if (!logical
10140       && gtk_widget_get_direction (GTK_WIDGET (tree_view)) == GTK_TEXT_DIR_RTL)
10141     expand = !expand;
10142
10143   if (expand)
10144     gtk_tree_view_real_expand_row (tree_view, cursor_path, tree, node, open_all, TRUE);
10145   else
10146     gtk_tree_view_real_collapse_row (tree_view, cursor_path, tree, node, TRUE);
10147
10148   gtk_tree_path_free (cursor_path);
10149
10150   return TRUE;
10151 }
10152
10153 static gboolean
10154 gtk_tree_view_real_select_cursor_parent (GtkTreeView *tree_view)
10155 {
10156   GtkRBTree *cursor_tree = NULL;
10157   GtkRBNode *cursor_node = NULL;
10158   GtkTreePath *cursor_path = NULL;
10159   GdkModifierType state;
10160
10161   if (!gtk_widget_has_focus (GTK_WIDGET (tree_view)))
10162     goto out;
10163
10164   cursor_path = NULL;
10165   if (tree_view->priv->cursor)
10166     cursor_path = gtk_tree_row_reference_get_path (tree_view->priv->cursor);
10167
10168   if (cursor_path == NULL)
10169     goto out;
10170
10171   _gtk_tree_view_find_node (tree_view, cursor_path,
10172                             &cursor_tree, &cursor_node);
10173   if (cursor_tree == NULL)
10174     {
10175       gtk_tree_path_free (cursor_path);
10176       goto out;
10177     }
10178
10179   if (cursor_tree->parent_node)
10180     {
10181       gtk_tree_view_queue_draw_path (tree_view, cursor_path, NULL);
10182       cursor_node = cursor_tree->parent_node;
10183       cursor_tree = cursor_tree->parent_tree;
10184
10185       gtk_tree_path_up (cursor_path);
10186
10187       if (gtk_get_current_event_state (&state))
10188         {
10189           if ((state & GDK_CONTROL_MASK) == GDK_CONTROL_MASK)
10190             tree_view->priv->ctrl_pressed = TRUE;
10191         }
10192
10193       gtk_tree_view_real_set_cursor (tree_view, cursor_path, TRUE, FALSE);
10194       gtk_tree_view_clamp_node_visible (tree_view, cursor_tree, cursor_node);
10195
10196       gtk_widget_grab_focus (GTK_WIDGET (tree_view));
10197       gtk_tree_view_queue_draw_path (tree_view, cursor_path, NULL);
10198       gtk_tree_path_free (cursor_path);
10199
10200       tree_view->priv->ctrl_pressed = FALSE;
10201
10202       return TRUE;
10203     }
10204
10205  out:
10206
10207   tree_view->priv->search_entry_avoid_unhandled_binding = TRUE;
10208   return FALSE;
10209 }
10210
10211 static gboolean
10212 gtk_tree_view_search_entry_flush_timeout (GtkTreeView *tree_view)
10213 {
10214   gtk_tree_view_search_dialog_hide (tree_view->priv->search_window, tree_view, NULL);
10215   tree_view->priv->typeselect_flush_timeout = 0;
10216
10217   return FALSE;
10218 }
10219
10220 /* Cut and paste from gtkwindow.c */
10221 static void
10222 send_focus_change (GtkWidget *widget,
10223                    GdkDevice *device,
10224                    gboolean   in)
10225 {
10226   GdkDeviceManager *device_manager;
10227   GList *devices, *d;
10228
10229   device_manager = gdk_display_get_device_manager (gtk_widget_get_display (widget));
10230   devices = gdk_device_manager_list_devices (device_manager, GDK_DEVICE_TYPE_MASTER);
10231   devices = g_list_concat (devices, gdk_device_manager_list_devices (device_manager, GDK_DEVICE_TYPE_SLAVE));
10232   devices = g_list_concat (devices, gdk_device_manager_list_devices (device_manager, GDK_DEVICE_TYPE_FLOATING));
10233
10234   for (d = devices; d; d = d->next)
10235     {
10236       GdkDevice *dev = d->data;
10237       GdkEvent *fevent;
10238       GdkWindow *window;
10239
10240       if (dev->source != GDK_SOURCE_KEYBOARD)
10241         continue;
10242
10243       window = gtk_widget_get_window (widget);
10244
10245       /* Skip non-master keyboards that haven't
10246        * selected for events from this window
10247        */
10248       if (gdk_device_get_device_type (dev) != GDK_DEVICE_TYPE_MASTER &&
10249           !gdk_window_get_device_events (window, dev))
10250         continue;
10251
10252       fevent = gdk_event_new (GDK_FOCUS_CHANGE);
10253
10254       fevent->focus_change.type = GDK_FOCUS_CHANGE;
10255       fevent->focus_change.window = g_object_ref (window);
10256       fevent->focus_change.in = in;
10257       gdk_event_set_device (fevent, device);
10258
10259       gtk_widget_send_focus_change (widget, fevent);
10260
10261       gdk_event_free (fevent);
10262     }
10263 }
10264
10265 static void
10266 gtk_tree_view_ensure_interactive_directory (GtkTreeView *tree_view)
10267 {
10268   GtkWidget *frame, *vbox, *toplevel;
10269   GdkScreen *screen;
10270
10271   if (tree_view->priv->search_custom_entry_set)
10272     return;
10273
10274   toplevel = gtk_widget_get_toplevel (GTK_WIDGET (tree_view));
10275   screen = gtk_widget_get_screen (GTK_WIDGET (tree_view));
10276
10277    if (tree_view->priv->search_window != NULL)
10278      {
10279        if (gtk_window_has_group (GTK_WINDOW (toplevel)))
10280          gtk_window_group_add_window (gtk_window_get_group (GTK_WINDOW (toplevel)),
10281                                       GTK_WINDOW (tree_view->priv->search_window));
10282        else if (gtk_window_has_group (GTK_WINDOW (tree_view->priv->search_window)))
10283          gtk_window_group_remove_window (gtk_window_get_group (GTK_WINDOW (tree_view->priv->search_window)),
10284                                          GTK_WINDOW (tree_view->priv->search_window));
10285
10286        gtk_window_set_screen (GTK_WINDOW (tree_view->priv->search_window), screen);
10287
10288        return;
10289      }
10290
10291   tree_view->priv->search_window = gtk_window_new (GTK_WINDOW_POPUP);
10292   gtk_window_set_screen (GTK_WINDOW (tree_view->priv->search_window), screen);
10293
10294   if (gtk_window_has_group (GTK_WINDOW (toplevel)))
10295     gtk_window_group_add_window (gtk_window_get_group (GTK_WINDOW (toplevel)),
10296                                  GTK_WINDOW (tree_view->priv->search_window));
10297
10298   gtk_window_set_type_hint (GTK_WINDOW (tree_view->priv->search_window),
10299                             GDK_WINDOW_TYPE_HINT_UTILITY);
10300   gtk_window_set_modal (GTK_WINDOW (tree_view->priv->search_window), TRUE);
10301   g_signal_connect (tree_view->priv->search_window, "delete-event",
10302                     G_CALLBACK (gtk_tree_view_search_delete_event),
10303                     tree_view);
10304   g_signal_connect (tree_view->priv->search_window, "key-press-event",
10305                     G_CALLBACK (gtk_tree_view_search_key_press_event),
10306                     tree_view);
10307   g_signal_connect (tree_view->priv->search_window, "button-press-event",
10308                     G_CALLBACK (gtk_tree_view_search_button_press_event),
10309                     tree_view);
10310   g_signal_connect (tree_view->priv->search_window, "scroll-event",
10311                     G_CALLBACK (gtk_tree_view_search_scroll_event),
10312                     tree_view);
10313
10314   frame = gtk_frame_new (NULL);
10315   gtk_frame_set_shadow_type (GTK_FRAME (frame), GTK_SHADOW_ETCHED_IN);
10316   gtk_widget_show (frame);
10317   gtk_container_add (GTK_CONTAINER (tree_view->priv->search_window), frame);
10318
10319   vbox = gtk_vbox_new (FALSE, 0);
10320   gtk_widget_show (vbox);
10321   gtk_container_add (GTK_CONTAINER (frame), vbox);
10322   gtk_container_set_border_width (GTK_CONTAINER (vbox), 3);
10323
10324   /* add entry */
10325   tree_view->priv->search_entry = gtk_entry_new ();
10326   gtk_widget_show (tree_view->priv->search_entry);
10327   g_signal_connect (tree_view->priv->search_entry, "populate-popup",
10328                     G_CALLBACK (gtk_tree_view_search_disable_popdown),
10329                     tree_view);
10330   g_signal_connect (tree_view->priv->search_entry,
10331                     "activate", G_CALLBACK (gtk_tree_view_search_activate),
10332                     tree_view);
10333   g_signal_connect (GTK_ENTRY (tree_view->priv->search_entry)->im_context,
10334                     "preedit-changed",
10335                     G_CALLBACK (gtk_tree_view_search_preedit_changed),
10336                     tree_view);
10337   gtk_container_add (GTK_CONTAINER (vbox),
10338                      tree_view->priv->search_entry);
10339
10340   gtk_widget_realize (tree_view->priv->search_entry);
10341 }
10342
10343 /* Pops up the interactive search entry.  If keybinding is TRUE then the user
10344  * started this by typing the start_interactive_search keybinding.  Otherwise, it came from
10345  */
10346 static gboolean
10347 gtk_tree_view_real_start_interactive_search (GtkTreeView *tree_view,
10348                                              GdkDevice   *device,
10349                                              gboolean     keybinding)
10350 {
10351   /* We only start interactive search if we have focus or the columns
10352    * have focus.  If one of our children have focus, we don't want to
10353    * start the search.
10354    */
10355   GList *list;
10356   gboolean found_focus = FALSE;
10357   GtkWidgetClass *entry_parent_class;
10358
10359   if (!tree_view->priv->enable_search && !keybinding)
10360     return FALSE;
10361
10362   if (tree_view->priv->search_custom_entry_set)
10363     return FALSE;
10364
10365   if (tree_view->priv->search_window != NULL &&
10366       gtk_widget_get_visible (tree_view->priv->search_window))
10367     return TRUE;
10368
10369   for (list = tree_view->priv->columns; list; list = list->next)
10370     {
10371       GtkTreeViewColumn *column;
10372
10373       column = list->data;
10374       if (! column->visible)
10375         continue;
10376
10377       if (gtk_widget_has_focus (column->button))
10378         {
10379           found_focus = TRUE;
10380           break;
10381         }
10382     }
10383
10384   if (gtk_widget_has_focus (GTK_WIDGET (tree_view)))
10385     found_focus = TRUE;
10386
10387   if (!found_focus)
10388     return FALSE;
10389
10390   if (tree_view->priv->search_column < 0)
10391     return FALSE;
10392
10393   gtk_tree_view_ensure_interactive_directory (tree_view);
10394
10395   if (keybinding)
10396     gtk_entry_set_text (GTK_ENTRY (tree_view->priv->search_entry), "");
10397
10398   /* done, show it */
10399   tree_view->priv->search_position_func (tree_view, tree_view->priv->search_window, tree_view->priv->search_position_user_data);
10400   gtk_widget_show (tree_view->priv->search_window);
10401   if (tree_view->priv->search_entry_changed_id == 0)
10402     {
10403       tree_view->priv->search_entry_changed_id =
10404         g_signal_connect (tree_view->priv->search_entry, "changed",
10405                           G_CALLBACK (gtk_tree_view_search_init),
10406                           tree_view);
10407     }
10408
10409   tree_view->priv->typeselect_flush_timeout =
10410     gdk_threads_add_timeout (GTK_TREE_VIEW_SEARCH_DIALOG_TIMEOUT,
10411                    (GSourceFunc) gtk_tree_view_search_entry_flush_timeout,
10412                    tree_view);
10413
10414   /* Grab focus will select all the text.  We don't want that to happen, so we
10415    * call the parent instance and bypass the selection change.  This is probably
10416    * really non-kosher. */
10417   entry_parent_class = g_type_class_peek_parent (GTK_ENTRY_GET_CLASS (tree_view->priv->search_entry));
10418   (entry_parent_class->grab_focus) (tree_view->priv->search_entry);
10419
10420   /* send focus-in event */
10421   send_focus_change (tree_view->priv->search_entry, device, TRUE);
10422
10423   /* search first matching iter */
10424   gtk_tree_view_search_init (tree_view->priv->search_entry, tree_view);
10425
10426   return TRUE;
10427 }
10428
10429 static gboolean
10430 gtk_tree_view_start_interactive_search (GtkTreeView *tree_view)
10431 {
10432   return gtk_tree_view_real_start_interactive_search (tree_view,
10433                                                       gtk_get_current_event_device (),
10434                                                       TRUE);
10435 }
10436
10437 /* this function returns the new width of the column being resized given
10438  * the column and x position of the cursor; the x cursor position is passed
10439  * in as a pointer and automagicly corrected if it's beyond min/max limits
10440  */
10441 static gint
10442 gtk_tree_view_new_column_width (GtkTreeView *tree_view,
10443                                 gint       i,
10444                                 gint      *x)
10445 {
10446   GtkAllocation allocation;
10447   GtkTreeViewColumn *column;
10448   GtkRequisition button_req;
10449   gint width;
10450   gboolean rtl;
10451
10452   /* first translate the x position from widget->window
10453    * to clist->clist_window
10454    */
10455   rtl = (gtk_widget_get_direction (GTK_WIDGET (tree_view)) == GTK_TEXT_DIR_RTL);
10456   column = g_list_nth (tree_view->priv->columns, i)->data;
10457   gtk_widget_get_allocation (column->button, &allocation);
10458   width = rtl ? (allocation.x + allocation.width - *x) : (*x - allocation.x);
10459
10460   /* Clamp down the value */
10461   if (column->min_width == -1)
10462     {
10463       gtk_widget_get_preferred_size (column->button, &button_req, NULL);
10464       width = MAX (button_req.width, width);
10465     }
10466   else
10467     width = MAX (column->min_width,
10468                  width);
10469   if (column->max_width != -1)
10470     width = MIN (width, column->max_width);
10471
10472   *x = rtl ? (allocation.x + allocation.width - width) : (allocation.x + width);
10473
10474   return width;
10475 }
10476
10477
10478 /* FIXME this adjust_allocation is a big cut-and-paste from
10479  * GtkCList, needs to be some "official" way to do this
10480  * factored out.
10481  */
10482 typedef struct
10483 {
10484   GdkWindow *window;
10485   int dx;
10486   int dy;
10487 } ScrollData;
10488
10489 /* The window to which widget->window is relative */
10490 #define ALLOCATION_WINDOW(widget)               \
10491    (!gtk_widget_get_has_window (widget) ?                   \
10492     gtk_widget_get_window (widget) :                        \
10493     gdk_window_get_parent (gtk_widget_get_window (widget)))
10494
10495 static void
10496 adjust_allocation_recurse (GtkWidget *widget,
10497                            gpointer   data)
10498 {
10499   GtkAllocation allocation;
10500   ScrollData *scroll_data = data;
10501
10502   /* Need to really size allocate instead of just poking
10503    * into widget->allocation if the widget is not realized.
10504    * FIXME someone figure out why this was.
10505    */
10506   gtk_widget_get_allocation (widget, &allocation);
10507   if (!gtk_widget_get_realized (widget))
10508     {
10509       if (gtk_widget_get_visible (widget))
10510         {
10511           GdkRectangle tmp_rectangle = allocation;
10512           tmp_rectangle.x += scroll_data->dx;
10513           tmp_rectangle.y += scroll_data->dy;
10514
10515           gtk_widget_size_allocate (widget, &tmp_rectangle);
10516         }
10517     }
10518   else
10519     {
10520       if (ALLOCATION_WINDOW (widget) == scroll_data->window)
10521         {
10522           allocation.x += scroll_data->dx;
10523           allocation.y += scroll_data->dy;
10524           gtk_widget_set_allocation (widget, &allocation);
10525
10526           if (GTK_IS_CONTAINER (widget))
10527             gtk_container_forall (GTK_CONTAINER (widget),
10528                                   adjust_allocation_recurse,
10529                                   data);
10530         }
10531     }
10532 }
10533
10534 static void
10535 adjust_allocation (GtkWidget *widget,
10536                    int        dx,
10537                    int        dy)
10538 {
10539   ScrollData scroll_data;
10540
10541   if (gtk_widget_get_realized (widget))
10542     scroll_data.window = ALLOCATION_WINDOW (widget);
10543   else
10544     scroll_data.window = NULL;
10545
10546   scroll_data.dx = dx;
10547   scroll_data.dy = dy;
10548
10549   adjust_allocation_recurse (widget, &scroll_data);
10550 }
10551
10552 /* Callbacks */
10553 static void
10554 gtk_tree_view_adjustment_changed (GtkAdjustment *adjustment,
10555                                   GtkTreeView   *tree_view)
10556 {
10557   if (gtk_widget_get_realized (GTK_WIDGET (tree_view)))
10558     {
10559       gint dy;
10560
10561       gdk_window_move (tree_view->priv->bin_window,
10562                        - tree_view->priv->hadjustment->value,
10563                        TREE_VIEW_HEADER_HEIGHT (tree_view));
10564       gdk_window_move (tree_view->priv->header_window,
10565                        - tree_view->priv->hadjustment->value,
10566                        0);
10567       dy = tree_view->priv->dy - (int) tree_view->priv->vadjustment->value;
10568       if (dy)
10569         {
10570           update_prelight (tree_view,
10571                            tree_view->priv->event_last_x,
10572                            tree_view->priv->event_last_y - dy);
10573
10574           if (tree_view->priv->edited_column &&
10575               GTK_IS_WIDGET (tree_view->priv->edited_column->editable_widget))
10576             {
10577               GList *list;
10578               GtkWidget *widget;
10579               GtkTreeViewChild *child = NULL;
10580
10581               widget = GTK_WIDGET (tree_view->priv->edited_column->editable_widget);
10582               adjust_allocation (widget, 0, dy);
10583
10584               for (list = tree_view->priv->children; list; list = list->next)
10585                 {
10586                   child = (GtkTreeViewChild *)list->data;
10587                   if (child->widget == widget)
10588                     {
10589                       child->y += dy;
10590                       break;
10591                     }
10592                 }
10593             }
10594         }
10595       gdk_window_scroll (tree_view->priv->bin_window, 0, dy);
10596
10597       if (tree_view->priv->dy != (int) tree_view->priv->vadjustment->value)
10598         {
10599           /* update our dy and top_row */
10600           tree_view->priv->dy = (int) tree_view->priv->vadjustment->value;
10601
10602           if (!tree_view->priv->in_top_row_to_dy)
10603             gtk_tree_view_dy_to_top_row (tree_view);
10604         }
10605
10606       gdk_window_process_updates (tree_view->priv->header_window, TRUE);
10607       gtk_tree_view_bin_process_updates (tree_view);
10608     }
10609 }
10610
10611 \f
10612
10613 /* Public methods
10614  */
10615
10616 /**
10617  * gtk_tree_view_new:
10618  *
10619  * Creates a new #GtkTreeView widget.
10620  *
10621  * Return value: A newly created #GtkTreeView widget.
10622  **/
10623 GtkWidget *
10624 gtk_tree_view_new (void)
10625 {
10626   return g_object_new (GTK_TYPE_TREE_VIEW, NULL);
10627 }
10628
10629 /**
10630  * gtk_tree_view_new_with_model:
10631  * @model: the model.
10632  *
10633  * Creates a new #GtkTreeView widget with the model initialized to @model.
10634  *
10635  * Return value: A newly created #GtkTreeView widget.
10636  **/
10637 GtkWidget *
10638 gtk_tree_view_new_with_model (GtkTreeModel *model)
10639 {
10640   return g_object_new (GTK_TYPE_TREE_VIEW, "model", model, NULL);
10641 }
10642
10643 /* Public Accessors
10644  */
10645
10646 /**
10647  * gtk_tree_view_get_model:
10648  * @tree_view: a #GtkTreeView
10649  *
10650  * Returns the model the #GtkTreeView is based on.  Returns %NULL if the
10651  * model is unset.
10652  *
10653  * Return value: (transfer none): A #GtkTreeModel, or %NULL if none is currently being used.
10654  **/
10655 GtkTreeModel *
10656 gtk_tree_view_get_model (GtkTreeView *tree_view)
10657 {
10658   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), NULL);
10659
10660   return tree_view->priv->model;
10661 }
10662
10663 /**
10664  * gtk_tree_view_set_model:
10665  * @tree_view: A #GtkTreeNode.
10666  * @model: (allow-none): The model.
10667  *
10668  * Sets the model for a #GtkTreeView.  If the @tree_view already has a model
10669  * set, it will remove it before setting the new model.  If @model is %NULL,
10670  * then it will unset the old model.
10671  **/
10672 void
10673 gtk_tree_view_set_model (GtkTreeView  *tree_view,
10674                          GtkTreeModel *model)
10675 {
10676   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
10677   g_return_if_fail (model == NULL || GTK_IS_TREE_MODEL (model));
10678
10679   if (model == tree_view->priv->model)
10680     return;
10681
10682   if (tree_view->priv->scroll_to_path)
10683     {
10684       gtk_tree_row_reference_free (tree_view->priv->scroll_to_path);
10685       tree_view->priv->scroll_to_path = NULL;
10686     }
10687
10688   if (tree_view->priv->model)
10689     {
10690       GList *tmplist = tree_view->priv->columns;
10691
10692       gtk_tree_view_unref_and_check_selection_tree (tree_view, tree_view->priv->tree);
10693       gtk_tree_view_stop_editing (tree_view, TRUE);
10694
10695       remove_expand_collapse_timeout (tree_view);
10696
10697       g_signal_handlers_disconnect_by_func (tree_view->priv->model,
10698                                             gtk_tree_view_row_changed,
10699                                             tree_view);
10700       g_signal_handlers_disconnect_by_func (tree_view->priv->model,
10701                                             gtk_tree_view_row_inserted,
10702                                             tree_view);
10703       g_signal_handlers_disconnect_by_func (tree_view->priv->model,
10704                                             gtk_tree_view_row_has_child_toggled,
10705                                             tree_view);
10706       g_signal_handlers_disconnect_by_func (tree_view->priv->model,
10707                                             gtk_tree_view_row_deleted,
10708                                             tree_view);
10709       g_signal_handlers_disconnect_by_func (tree_view->priv->model,
10710                                             gtk_tree_view_rows_reordered,
10711                                             tree_view);
10712
10713       for (; tmplist; tmplist = tmplist->next)
10714         _gtk_tree_view_column_unset_model (tmplist->data,
10715                                            tree_view->priv->model);
10716
10717       if (tree_view->priv->tree)
10718         gtk_tree_view_free_rbtree (tree_view);
10719
10720       gtk_tree_row_reference_free (tree_view->priv->drag_dest_row);
10721       tree_view->priv->drag_dest_row = NULL;
10722       gtk_tree_row_reference_free (tree_view->priv->cursor);
10723       tree_view->priv->cursor = NULL;
10724       gtk_tree_row_reference_free (tree_view->priv->anchor);
10725       tree_view->priv->anchor = NULL;
10726       gtk_tree_row_reference_free (tree_view->priv->top_row);
10727       tree_view->priv->top_row = NULL;
10728       gtk_tree_row_reference_free (tree_view->priv->scroll_to_path);
10729       tree_view->priv->scroll_to_path = NULL;
10730
10731       tree_view->priv->scroll_to_column = NULL;
10732
10733       g_object_unref (tree_view->priv->model);
10734
10735       tree_view->priv->search_column = -1;
10736       tree_view->priv->fixed_height_check = 0;
10737       tree_view->priv->fixed_height = -1;
10738       tree_view->priv->dy = tree_view->priv->top_row_dy = 0;
10739       tree_view->priv->last_button_x = -1;
10740       tree_view->priv->last_button_y = -1;
10741     }
10742
10743   tree_view->priv->model = model;
10744
10745   if (tree_view->priv->model)
10746     {
10747       gint i;
10748       GtkTreePath *path;
10749       GtkTreeIter iter;
10750       GtkTreeModelFlags flags;
10751
10752       if (tree_view->priv->search_column == -1)
10753         {
10754           for (i = 0; i < gtk_tree_model_get_n_columns (model); i++)
10755             {
10756               GType type = gtk_tree_model_get_column_type (model, i);
10757
10758               if (g_value_type_transformable (type, G_TYPE_STRING))
10759                 {
10760                   tree_view->priv->search_column = i;
10761                   break;
10762                 }
10763             }
10764         }
10765
10766       g_object_ref (tree_view->priv->model);
10767       g_signal_connect (tree_view->priv->model,
10768                         "row-changed",
10769                         G_CALLBACK (gtk_tree_view_row_changed),
10770                         tree_view);
10771       g_signal_connect (tree_view->priv->model,
10772                         "row-inserted",
10773                         G_CALLBACK (gtk_tree_view_row_inserted),
10774                         tree_view);
10775       g_signal_connect (tree_view->priv->model,
10776                         "row-has-child-toggled",
10777                         G_CALLBACK (gtk_tree_view_row_has_child_toggled),
10778                         tree_view);
10779       g_signal_connect (tree_view->priv->model,
10780                         "row-deleted",
10781                         G_CALLBACK (gtk_tree_view_row_deleted),
10782                         tree_view);
10783       g_signal_connect (tree_view->priv->model,
10784                         "rows-reordered",
10785                         G_CALLBACK (gtk_tree_view_rows_reordered),
10786                         tree_view);
10787
10788       flags = gtk_tree_model_get_flags (tree_view->priv->model);
10789       if ((flags & GTK_TREE_MODEL_LIST_ONLY) == GTK_TREE_MODEL_LIST_ONLY)
10790         GTK_TREE_VIEW_SET_FLAG (tree_view, GTK_TREE_VIEW_IS_LIST);
10791       else
10792         GTK_TREE_VIEW_UNSET_FLAG (tree_view, GTK_TREE_VIEW_IS_LIST);
10793
10794       path = gtk_tree_path_new_first ();
10795       if (gtk_tree_model_get_iter (tree_view->priv->model, &iter, path))
10796         {
10797           tree_view->priv->tree = _gtk_rbtree_new ();
10798           gtk_tree_view_build_tree (tree_view, tree_view->priv->tree, &iter, 1, FALSE);
10799         }
10800       gtk_tree_path_free (path);
10801
10802       /*  FIXME: do I need to do this? gtk_tree_view_create_buttons (tree_view); */
10803       install_presize_handler (tree_view);
10804     }
10805
10806   g_object_notify (G_OBJECT (tree_view), "model");
10807
10808   if (tree_view->priv->selection)
10809   _gtk_tree_selection_emit_changed (tree_view->priv->selection);
10810
10811   if (gtk_widget_get_realized (GTK_WIDGET (tree_view)))
10812     gtk_widget_queue_resize (GTK_WIDGET (tree_view));
10813 }
10814
10815 /**
10816  * gtk_tree_view_get_selection:
10817  * @tree_view: A #GtkTreeView.
10818  *
10819  * Gets the #GtkTreeSelection associated with @tree_view.
10820  *
10821  * Return value: (transfer none): A #GtkTreeSelection object.
10822  **/
10823 GtkTreeSelection *
10824 gtk_tree_view_get_selection (GtkTreeView *tree_view)
10825 {
10826   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), NULL);
10827
10828   return tree_view->priv->selection;
10829 }
10830
10831 /**
10832  * gtk_tree_view_get_hadjustment:
10833  * @tree_view: A #GtkTreeView
10834  *
10835  * Gets the #GtkAdjustment currently being used for the horizontal aspect.
10836  *
10837  * Return value: (transfer none): A #GtkAdjustment object, or %NULL
10838  *     if none is currently being used.
10839  *
10840  * Deprecated: 3.0: Use gtk_scrollable_get_hadjustment()
10841  **/
10842 GtkAdjustment *
10843 gtk_tree_view_get_hadjustment (GtkTreeView *tree_view)
10844 {
10845   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), NULL);
10846
10847   return tree_view->priv->hadjustment;
10848 }
10849
10850 /**
10851  * gtk_tree_view_set_hadjustment:
10852  * @tree_view: A #GtkTreeView
10853  * @adjustment: (allow-none): The #GtkAdjustment to set, or %NULL
10854  *
10855  * Sets the #GtkAdjustment for the current horizontal aspect.
10856  *
10857  * Deprecated: 3.0: Use gtk_scrollable_set_hadjustment()
10858  **/
10859 void
10860 gtk_tree_view_set_hadjustment (GtkTreeView   *tree_view,
10861                                GtkAdjustment *adjustment)
10862 {
10863   GtkTreeViewPrivate *priv = tree_view->priv;
10864
10865   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
10866   g_return_if_fail (adjustment == NULL || GTK_IS_ADJUSTMENT (adjustment));
10867
10868   if (adjustment && priv->hadjustment == adjustment)
10869     return;
10870
10871   if (priv->hadjustment != NULL)
10872     {
10873       g_signal_handlers_disconnect_by_func (priv->hadjustment,
10874                                             gtk_tree_view_adjustment_changed,
10875                                             tree_view);
10876       g_object_unref (priv->hadjustment);
10877     }
10878
10879   if (adjustment == NULL)
10880     adjustment = gtk_adjustment_new (0.0, 0.0, 0.0,
10881                                      0.0, 0.0, 0.0);
10882
10883   g_signal_connect (adjustment, "value-changed",
10884                     G_CALLBACK (gtk_tree_view_adjustment_changed), tree_view);
10885   priv->hadjustment = g_object_ref_sink (adjustment);
10886   /* FIXME: Adjustment should probably be populated here with fresh values, but
10887    * internal details are too complicated for me to decipher right now.
10888    */
10889   gtk_tree_view_adjustment_changed (NULL, tree_view);
10890
10891   g_object_notify (G_OBJECT (tree_view), "hadjustment");
10892 }
10893
10894 /**
10895  * gtk_tree_view_get_vadjustment:
10896  * @tree_view: A #GtkTreeView
10897  *
10898  * Gets the #GtkAdjustment currently being used for the vertical aspect.
10899  *
10900  * Return value: (transfer none): A #GtkAdjustment object, or %NULL
10901  *     if none is currently being used.
10902  *
10903  * Deprecated: 3.0: Use gtk_scrollable_get_vadjustment()
10904  **/
10905 GtkAdjustment *
10906 gtk_tree_view_get_vadjustment (GtkTreeView *tree_view)
10907 {
10908   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), NULL);
10909
10910   return tree_view->priv->vadjustment;
10911 }
10912
10913 /**
10914  * gtk_tree_view_set_vadjustment:
10915  * @tree_view: A #GtkTreeView
10916  * @adjustment: (allow-none): The #GtkAdjustment to set, or %NULL
10917  *
10918  * Sets the #GtkAdjustment for the current vertical aspect.
10919  *
10920  * Deprecated: 3.0: Use gtk_scrollable_set_vadjustment()
10921  **/
10922 void
10923 gtk_tree_view_set_vadjustment (GtkTreeView   *tree_view,
10924                                GtkAdjustment *adjustment)
10925 {
10926   GtkTreeViewPrivate *priv = tree_view->priv;
10927
10928   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
10929   g_return_if_fail (adjustment == NULL || GTK_IS_ADJUSTMENT (adjustment));
10930
10931   if (adjustment && priv->vadjustment == adjustment)
10932     return;
10933
10934   if (priv->vadjustment != NULL)
10935     {
10936       g_signal_handlers_disconnect_by_func (priv->vadjustment,
10937                                             gtk_tree_view_adjustment_changed,
10938                                             tree_view);
10939       g_object_unref (priv->vadjustment);
10940     }
10941
10942   if (adjustment == NULL)
10943     adjustment = gtk_adjustment_new (0.0, 0.0, 0.0,
10944                                      0.0, 0.0, 0.0);
10945
10946   g_signal_connect (adjustment, "value-changed",
10947                     G_CALLBACK (gtk_tree_view_adjustment_changed), tree_view);
10948   priv->vadjustment = g_object_ref_sink (adjustment);
10949   /* FIXME: Adjustment should probably be populated here with fresh values, but
10950    * internal details are too complicated for me to decipher right now.
10951    */
10952   gtk_tree_view_adjustment_changed (NULL, tree_view);
10953   g_object_notify (G_OBJECT (tree_view), "vadjustment");
10954 }
10955
10956 /* Column and header operations */
10957
10958 /**
10959  * gtk_tree_view_get_headers_visible:
10960  * @tree_view: A #GtkTreeView.
10961  *
10962  * Returns %TRUE if the headers on the @tree_view are visible.
10963  *
10964  * Return value: Whether the headers are visible or not.
10965  **/
10966 gboolean
10967 gtk_tree_view_get_headers_visible (GtkTreeView *tree_view)
10968 {
10969   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), FALSE);
10970
10971   return GTK_TREE_VIEW_FLAG_SET (tree_view, GTK_TREE_VIEW_HEADERS_VISIBLE);
10972 }
10973
10974 /**
10975  * gtk_tree_view_set_headers_visible:
10976  * @tree_view: A #GtkTreeView.
10977  * @headers_visible: %TRUE if the headers are visible
10978  *
10979  * Sets the visibility state of the headers.
10980  **/
10981 void
10982 gtk_tree_view_set_headers_visible (GtkTreeView *tree_view,
10983                                    gboolean     headers_visible)
10984 {
10985   gint x, y;
10986   GList *list;
10987   GtkTreeViewColumn *column;
10988   GtkAllocation allocation;
10989
10990   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
10991
10992   headers_visible = !! headers_visible;
10993
10994   if (GTK_TREE_VIEW_FLAG_SET (tree_view, GTK_TREE_VIEW_HEADERS_VISIBLE) == headers_visible)
10995     return;
10996
10997   if (headers_visible)
10998     GTK_TREE_VIEW_SET_FLAG (tree_view, GTK_TREE_VIEW_HEADERS_VISIBLE);
10999   else
11000     GTK_TREE_VIEW_UNSET_FLAG (tree_view, GTK_TREE_VIEW_HEADERS_VISIBLE);
11001
11002   if (gtk_widget_get_realized (GTK_WIDGET (tree_view)))
11003     {
11004       gdk_window_get_position (tree_view->priv->bin_window, &x, &y);
11005       if (headers_visible)
11006         {
11007           gtk_widget_get_allocation (GTK_WIDGET (tree_view), &allocation);
11008           gdk_window_move_resize (tree_view->priv->bin_window,
11009                                   x, y  + TREE_VIEW_HEADER_HEIGHT (tree_view),
11010                                   tree_view->priv->width, allocation.height -  + TREE_VIEW_HEADER_HEIGHT (tree_view));
11011
11012           if (gtk_widget_get_mapped (GTK_WIDGET (tree_view)))
11013             gtk_tree_view_map_buttons (tree_view);
11014         }
11015       else
11016         {
11017           gdk_window_move_resize (tree_view->priv->bin_window, x, y, tree_view->priv->width, tree_view->priv->height);
11018
11019           for (list = tree_view->priv->columns; list; list = list->next)
11020             {
11021               column = list->data;
11022               gtk_widget_unmap (column->button);
11023             }
11024           gdk_window_hide (tree_view->priv->header_window);
11025         }
11026     }
11027
11028   gtk_widget_get_allocation (GTK_WIDGET (tree_view), &allocation);
11029   tree_view->priv->vadjustment->page_size = allocation.height - TREE_VIEW_HEADER_HEIGHT (tree_view);
11030   tree_view->priv->vadjustment->page_increment = (allocation.height - TREE_VIEW_HEADER_HEIGHT (tree_view)) / 2;
11031   tree_view->priv->vadjustment->lower = 0;
11032   tree_view->priv->vadjustment->upper = tree_view->priv->height;
11033   gtk_adjustment_changed (tree_view->priv->vadjustment);
11034
11035   gtk_widget_queue_resize (GTK_WIDGET (tree_view));
11036
11037   g_object_notify (G_OBJECT (tree_view), "headers-visible");
11038 }
11039
11040 /**
11041  * gtk_tree_view_columns_autosize:
11042  * @tree_view: A #GtkTreeView.
11043  *
11044  * Resizes all columns to their optimal width. Only works after the
11045  * treeview has been realized.
11046  **/
11047 void
11048 gtk_tree_view_columns_autosize (GtkTreeView *tree_view)
11049 {
11050   gboolean dirty = FALSE;
11051   GList *list;
11052   GtkTreeViewColumn *column;
11053
11054   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
11055
11056   for (list = tree_view->priv->columns; list; list = list->next)
11057     {
11058       column = list->data;
11059       if (column->column_type == GTK_TREE_VIEW_COLUMN_AUTOSIZE)
11060         continue;
11061       _gtk_tree_view_column_cell_set_dirty (column, TRUE);
11062       dirty = TRUE;
11063     }
11064
11065   if (dirty)
11066     gtk_widget_queue_resize (GTK_WIDGET (tree_view));
11067 }
11068
11069 /**
11070  * gtk_tree_view_set_headers_clickable:
11071  * @tree_view: A #GtkTreeView.
11072  * @setting: %TRUE if the columns are clickable.
11073  *
11074  * Allow the column title buttons to be clicked.
11075  **/
11076 void
11077 gtk_tree_view_set_headers_clickable (GtkTreeView *tree_view,
11078                                      gboolean   setting)
11079 {
11080   GList *list;
11081
11082   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
11083
11084   for (list = tree_view->priv->columns; list; list = list->next)
11085     gtk_tree_view_column_set_clickable (GTK_TREE_VIEW_COLUMN (list->data), setting);
11086
11087   g_object_notify (G_OBJECT (tree_view), "headers-clickable");
11088 }
11089
11090
11091 /**
11092  * gtk_tree_view_get_headers_clickable:
11093  * @tree_view: A #GtkTreeView.
11094  *
11095  * Returns whether all header columns are clickable.
11096  *
11097  * Return value: %TRUE if all header columns are clickable, otherwise %FALSE
11098  *
11099  * Since: 2.10
11100  **/
11101 gboolean
11102 gtk_tree_view_get_headers_clickable (GtkTreeView *tree_view)
11103 {
11104   GList *list;
11105
11106   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), FALSE);
11107
11108   for (list = tree_view->priv->columns; list; list = list->next)
11109     if (!GTK_TREE_VIEW_COLUMN (list->data)->clickable)
11110       return FALSE;
11111
11112   return TRUE;
11113 }
11114
11115 /**
11116  * gtk_tree_view_set_rules_hint
11117  * @tree_view: a #GtkTreeView
11118  * @setting: %TRUE if the tree requires reading across rows
11119  *
11120  * This function tells GTK+ that the user interface for your
11121  * application requires users to read across tree rows and associate
11122  * cells with one another. By default, GTK+ will then render the tree
11123  * with alternating row colors. Do <emphasis>not</emphasis> use it
11124  * just because you prefer the appearance of the ruled tree; that's a
11125  * question for the theme. Some themes will draw tree rows in
11126  * alternating colors even when rules are turned off, and users who
11127  * prefer that appearance all the time can choose those themes. You
11128  * should call this function only as a <emphasis>semantic</emphasis>
11129  * hint to the theme engine that your tree makes alternating colors
11130  * useful from a functional standpoint (since it has lots of columns,
11131  * generally).
11132  *
11133  **/
11134 void
11135 gtk_tree_view_set_rules_hint (GtkTreeView  *tree_view,
11136                               gboolean      setting)
11137 {
11138   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
11139
11140   setting = setting != FALSE;
11141
11142   if (tree_view->priv->has_rules != setting)
11143     {
11144       tree_view->priv->has_rules = setting;
11145       gtk_widget_queue_draw (GTK_WIDGET (tree_view));
11146     }
11147
11148   g_object_notify (G_OBJECT (tree_view), "rules-hint");
11149 }
11150
11151 /**
11152  * gtk_tree_view_get_rules_hint
11153  * @tree_view: a #GtkTreeView
11154  *
11155  * Gets the setting set by gtk_tree_view_set_rules_hint().
11156  *
11157  * Return value: %TRUE if rules are useful for the user of this tree
11158  **/
11159 gboolean
11160 gtk_tree_view_get_rules_hint (GtkTreeView  *tree_view)
11161 {
11162   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), FALSE);
11163
11164   return tree_view->priv->has_rules;
11165 }
11166
11167 /* Public Column functions
11168  */
11169
11170 /**
11171  * gtk_tree_view_append_column:
11172  * @tree_view: A #GtkTreeView.
11173  * @column: The #GtkTreeViewColumn to add.
11174  *
11175  * Appends @column to the list of columns. If @tree_view has "fixed_height"
11176  * mode enabled, then @column must have its "sizing" property set to be
11177  * GTK_TREE_VIEW_COLUMN_FIXED.
11178  *
11179  * Return value: The number of columns in @tree_view after appending.
11180  **/
11181 gint
11182 gtk_tree_view_append_column (GtkTreeView       *tree_view,
11183                              GtkTreeViewColumn *column)
11184 {
11185   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), -1);
11186   g_return_val_if_fail (GTK_IS_TREE_VIEW_COLUMN (column), -1);
11187   g_return_val_if_fail (column->tree_view == NULL, -1);
11188
11189   return gtk_tree_view_insert_column (tree_view, column, -1);
11190 }
11191
11192
11193 /**
11194  * gtk_tree_view_remove_column:
11195  * @tree_view: A #GtkTreeView.
11196  * @column: The #GtkTreeViewColumn to remove.
11197  *
11198  * Removes @column from @tree_view.
11199  *
11200  * Return value: The number of columns in @tree_view after removing.
11201  **/
11202 gint
11203 gtk_tree_view_remove_column (GtkTreeView       *tree_view,
11204                              GtkTreeViewColumn *column)
11205 {
11206   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), -1);
11207   g_return_val_if_fail (GTK_IS_TREE_VIEW_COLUMN (column), -1);
11208   g_return_val_if_fail (column->tree_view == GTK_WIDGET (tree_view), -1);
11209
11210   if (tree_view->priv->focus_column == column)
11211     tree_view->priv->focus_column = NULL;
11212
11213   if (tree_view->priv->edited_column == column)
11214     {
11215       gtk_tree_view_stop_editing (tree_view, TRUE);
11216
11217       /* no need to, but just to be sure ... */
11218       tree_view->priv->edited_column = NULL;
11219     }
11220
11221   if (tree_view->priv->expander_column == column)
11222     tree_view->priv->expander_column = NULL;
11223
11224   g_signal_handlers_disconnect_by_func (column,
11225                                         G_CALLBACK (column_sizing_notify),
11226                                         tree_view);
11227
11228   _gtk_tree_view_column_unset_tree_view (column);
11229
11230   tree_view->priv->columns = g_list_remove (tree_view->priv->columns, column);
11231   tree_view->priv->n_columns--;
11232
11233   if (gtk_widget_get_realized (GTK_WIDGET (tree_view)))
11234     {
11235       GList *list;
11236
11237       _gtk_tree_view_column_unrealize_button (column);
11238       for (list = tree_view->priv->columns; list; list = list->next)
11239         {
11240           GtkTreeViewColumn *tmp_column;
11241
11242           tmp_column = GTK_TREE_VIEW_COLUMN (list->data);
11243           if (tmp_column->visible)
11244             _gtk_tree_view_column_cell_set_dirty (tmp_column, TRUE);
11245         }
11246
11247       if (tree_view->priv->n_columns == 0 &&
11248           gtk_tree_view_get_headers_visible (tree_view))
11249         gdk_window_hide (tree_view->priv->header_window);
11250
11251       gtk_widget_queue_resize (GTK_WIDGET (tree_view));
11252     }
11253
11254   g_object_unref (column);
11255   g_signal_emit (tree_view, tree_view_signals[COLUMNS_CHANGED], 0);
11256
11257   return tree_view->priv->n_columns;
11258 }
11259
11260 /**
11261  * gtk_tree_view_insert_column:
11262  * @tree_view: A #GtkTreeView.
11263  * @column: The #GtkTreeViewColumn to be inserted.
11264  * @position: The position to insert @column in.
11265  *
11266  * This inserts the @column into the @tree_view at @position.  If @position is
11267  * -1, then the column is inserted at the end. If @tree_view has
11268  * "fixed_height" mode enabled, then @column must have its "sizing" property
11269  * set to be GTK_TREE_VIEW_COLUMN_FIXED.
11270  *
11271  * Return value: The number of columns in @tree_view after insertion.
11272  **/
11273 gint
11274 gtk_tree_view_insert_column (GtkTreeView       *tree_view,
11275                              GtkTreeViewColumn *column,
11276                              gint               position)
11277 {
11278   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), -1);
11279   g_return_val_if_fail (GTK_IS_TREE_VIEW_COLUMN (column), -1);
11280   g_return_val_if_fail (column->tree_view == NULL, -1);
11281
11282   if (tree_view->priv->fixed_height_mode)
11283     g_return_val_if_fail (gtk_tree_view_column_get_sizing (column)
11284                           == GTK_TREE_VIEW_COLUMN_FIXED, -1);
11285
11286   g_object_ref_sink (column);
11287
11288   if (tree_view->priv->n_columns == 0 &&
11289       gtk_widget_get_realized (GTK_WIDGET (tree_view)) &&
11290       gtk_tree_view_get_headers_visible (tree_view))
11291     {
11292       gdk_window_show (tree_view->priv->header_window);
11293     }
11294
11295   g_signal_connect (column, "notify::sizing",
11296                     G_CALLBACK (column_sizing_notify), tree_view);
11297
11298   tree_view->priv->columns = g_list_insert (tree_view->priv->columns,
11299                                             column, position);
11300   tree_view->priv->n_columns++;
11301
11302   _gtk_tree_view_column_set_tree_view (column, tree_view);
11303
11304   if (gtk_widget_get_realized (GTK_WIDGET (tree_view)))
11305     {
11306       GList *list;
11307
11308       _gtk_tree_view_column_realize_button (column);
11309
11310       for (list = tree_view->priv->columns; list; list = list->next)
11311         {
11312           column = GTK_TREE_VIEW_COLUMN (list->data);
11313           if (column->visible)
11314             _gtk_tree_view_column_cell_set_dirty (column, TRUE);
11315         }
11316       gtk_widget_queue_resize (GTK_WIDGET (tree_view));
11317     }
11318
11319   g_signal_emit (tree_view, tree_view_signals[COLUMNS_CHANGED], 0);
11320
11321   return tree_view->priv->n_columns;
11322 }
11323
11324 /**
11325  * gtk_tree_view_insert_column_with_attributes:
11326  * @tree_view: A #GtkTreeView
11327  * @position: The position to insert the new column in.
11328  * @title: The title to set the header to.
11329  * @cell: The #GtkCellRenderer.
11330  * @Varargs: A %NULL-terminated list of attributes.
11331  *
11332  * Creates a new #GtkTreeViewColumn and inserts it into the @tree_view at
11333  * @position.  If @position is -1, then the newly created column is inserted at
11334  * the end.  The column is initialized with the attributes given. If @tree_view
11335  * has "fixed_height" mode enabled, then the new column will have its sizing
11336  * property set to be GTK_TREE_VIEW_COLUMN_FIXED.
11337  *
11338  * Return value: The number of columns in @tree_view after insertion.
11339  **/
11340 gint
11341 gtk_tree_view_insert_column_with_attributes (GtkTreeView     *tree_view,
11342                                              gint             position,
11343                                              const gchar     *title,
11344                                              GtkCellRenderer *cell,
11345                                              ...)
11346 {
11347   GtkTreeViewColumn *column;
11348   gchar *attribute;
11349   va_list args;
11350   gint column_id;
11351
11352   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), -1);
11353
11354   column = gtk_tree_view_column_new ();
11355   if (tree_view->priv->fixed_height_mode)
11356     gtk_tree_view_column_set_sizing (column, GTK_TREE_VIEW_COLUMN_FIXED);
11357
11358   gtk_tree_view_column_set_title (column, title);
11359   gtk_tree_view_column_pack_start (column, cell, TRUE);
11360
11361   va_start (args, cell);
11362
11363   attribute = va_arg (args, gchar *);
11364
11365   while (attribute != NULL)
11366     {
11367       column_id = va_arg (args, gint);
11368       gtk_tree_view_column_add_attribute (column, cell, attribute, column_id);
11369       attribute = va_arg (args, gchar *);
11370     }
11371
11372   va_end (args);
11373
11374   gtk_tree_view_insert_column (tree_view, column, position);
11375
11376   return tree_view->priv->n_columns;
11377 }
11378
11379 /**
11380  * gtk_tree_view_insert_column_with_data_func:
11381  * @tree_view: a #GtkTreeView
11382  * @position: Position to insert, -1 for append
11383  * @title: column title
11384  * @cell: cell renderer for column
11385  * @func: function to set attributes of cell renderer
11386  * @data: data for @func
11387  * @dnotify: destroy notifier for @data
11388  *
11389  * Convenience function that inserts a new column into the #GtkTreeView
11390  * with the given cell renderer and a #GtkCellDataFunc to set cell renderer
11391  * attributes (normally using data from the model). See also
11392  * gtk_tree_view_column_set_cell_data_func(), gtk_tree_view_column_pack_start().
11393  * If @tree_view has "fixed_height" mode enabled, then the new column will have its
11394  * "sizing" property set to be GTK_TREE_VIEW_COLUMN_FIXED.
11395  *
11396  * Return value: number of columns in the tree view post-insert
11397  **/
11398 gint
11399 gtk_tree_view_insert_column_with_data_func  (GtkTreeView               *tree_view,
11400                                              gint                       position,
11401                                              const gchar               *title,
11402                                              GtkCellRenderer           *cell,
11403                                              GtkTreeCellDataFunc        func,
11404                                              gpointer                   data,
11405                                              GDestroyNotify             dnotify)
11406 {
11407   GtkTreeViewColumn *column;
11408
11409   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), -1);
11410
11411   column = gtk_tree_view_column_new ();
11412   if (tree_view->priv->fixed_height_mode)
11413     gtk_tree_view_column_set_sizing (column, GTK_TREE_VIEW_COLUMN_FIXED);
11414
11415   gtk_tree_view_column_set_title (column, title);
11416   gtk_tree_view_column_pack_start (column, cell, TRUE);
11417   gtk_tree_view_column_set_cell_data_func (column, cell, func, data, dnotify);
11418
11419   gtk_tree_view_insert_column (tree_view, column, position);
11420
11421   return tree_view->priv->n_columns;
11422 }
11423
11424 /**
11425  * gtk_tree_view_get_column:
11426  * @tree_view: A #GtkTreeView.
11427  * @n: The position of the column, counting from 0.
11428  *
11429  * Gets the #GtkTreeViewColumn at the given position in the #tree_view.
11430  *
11431  * Return value: (transfer none): The #GtkTreeViewColumn, or %NULL if the
11432  *     position is outside the range of columns.
11433  **/
11434 GtkTreeViewColumn *
11435 gtk_tree_view_get_column (GtkTreeView *tree_view,
11436                           gint         n)
11437 {
11438   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), NULL);
11439
11440   if (n < 0 || n >= tree_view->priv->n_columns)
11441     return NULL;
11442
11443   if (tree_view->priv->columns == NULL)
11444     return NULL;
11445
11446   return GTK_TREE_VIEW_COLUMN (g_list_nth (tree_view->priv->columns, n)->data);
11447 }
11448
11449 /**
11450  * gtk_tree_view_get_columns:
11451  * @tree_view: A #GtkTreeView
11452  *
11453  * Returns a #GList of all the #GtkTreeViewColumn s currently in @tree_view.
11454  * The returned list must be freed with g_list_free ().
11455  *
11456  * Return value: (element-type GtkTreeViewColumn) (transfer container): A list of #GtkTreeViewColumn s
11457  **/
11458 GList *
11459 gtk_tree_view_get_columns (GtkTreeView *tree_view)
11460 {
11461   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), NULL);
11462
11463   return g_list_copy (tree_view->priv->columns);
11464 }
11465
11466 /**
11467  * gtk_tree_view_move_column_after:
11468  * @tree_view: A #GtkTreeView
11469  * @column: The #GtkTreeViewColumn to be moved.
11470  * @base_column: (allow-none): The #GtkTreeViewColumn to be moved relative to, or %NULL.
11471  *
11472  * Moves @column to be after to @base_column.  If @base_column is %NULL, then
11473  * @column is placed in the first position.
11474  **/
11475 void
11476 gtk_tree_view_move_column_after (GtkTreeView       *tree_view,
11477                                  GtkTreeViewColumn *column,
11478                                  GtkTreeViewColumn *base_column)
11479 {
11480   GList *column_list_el, *base_el = NULL;
11481
11482   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
11483
11484   column_list_el = g_list_find (tree_view->priv->columns, column);
11485   g_return_if_fail (column_list_el != NULL);
11486
11487   if (base_column)
11488     {
11489       base_el = g_list_find (tree_view->priv->columns, base_column);
11490       g_return_if_fail (base_el != NULL);
11491     }
11492
11493   if (column_list_el->prev == base_el)
11494     return;
11495
11496   tree_view->priv->columns = g_list_remove_link (tree_view->priv->columns, column_list_el);
11497   if (base_el == NULL)
11498     {
11499       column_list_el->prev = NULL;
11500       column_list_el->next = tree_view->priv->columns;
11501       if (column_list_el->next)
11502         column_list_el->next->prev = column_list_el;
11503       tree_view->priv->columns = column_list_el;
11504     }
11505   else
11506     {
11507       column_list_el->prev = base_el;
11508       column_list_el->next = base_el->next;
11509       if (column_list_el->next)
11510         column_list_el->next->prev = column_list_el;
11511       base_el->next = column_list_el;
11512     }
11513
11514   if (gtk_widget_get_realized (GTK_WIDGET (tree_view)))
11515     {
11516       gtk_widget_queue_resize (GTK_WIDGET (tree_view));
11517       gtk_tree_view_size_allocate_columns (GTK_WIDGET (tree_view), NULL);
11518     }
11519
11520   g_signal_emit (tree_view, tree_view_signals[COLUMNS_CHANGED], 0);
11521 }
11522
11523 /**
11524  * gtk_tree_view_set_expander_column:
11525  * @tree_view: A #GtkTreeView
11526  * @column: %NULL, or the column to draw the expander arrow at.
11527  *
11528  * Sets the column to draw the expander arrow at. It must be in @tree_view.
11529  * If @column is %NULL, then the expander arrow is always at the first
11530  * visible column.
11531  *
11532  * If you do not want expander arrow to appear in your tree, set the
11533  * expander column to a hidden column.
11534  **/
11535 void
11536 gtk_tree_view_set_expander_column (GtkTreeView       *tree_view,
11537                                    GtkTreeViewColumn *column)
11538 {
11539   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
11540   g_return_if_fail (column == NULL || GTK_IS_TREE_VIEW_COLUMN (column));
11541
11542   if (tree_view->priv->expander_column != column)
11543     {
11544       GList *list;
11545
11546       if (column)
11547         {
11548           /* Confirm that column is in tree_view */
11549           for (list = tree_view->priv->columns; list; list = list->next)
11550             if (list->data == column)
11551               break;
11552           g_return_if_fail (list != NULL);
11553         }
11554
11555       tree_view->priv->expander_column = column;
11556       g_object_notify (G_OBJECT (tree_view), "expander-column");
11557     }
11558 }
11559
11560 /**
11561  * gtk_tree_view_get_expander_column:
11562  * @tree_view: A #GtkTreeView
11563  *
11564  * Returns the column that is the current expander column.
11565  * This column has the expander arrow drawn next to it.
11566  *
11567  * Return value: (transfer none): The expander column.
11568  **/
11569 GtkTreeViewColumn *
11570 gtk_tree_view_get_expander_column (GtkTreeView *tree_view)
11571 {
11572   GList *list;
11573
11574   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), NULL);
11575
11576   for (list = tree_view->priv->columns; list; list = list->next)
11577     if (gtk_tree_view_is_expander_column (tree_view, GTK_TREE_VIEW_COLUMN (list->data)))
11578       return (GtkTreeViewColumn *) list->data;
11579   return NULL;
11580 }
11581
11582
11583 /**
11584  * gtk_tree_view_set_column_drag_function:
11585  * @tree_view: A #GtkTreeView.
11586  * @func: (allow-none): A function to determine which columns are reorderable, or %NULL.
11587  * @user_data: (allow-none): User data to be passed to @func, or %NULL
11588  * @destroy: (allow-none): Destroy notifier for @user_data, or %NULL
11589  *
11590  * Sets a user function for determining where a column may be dropped when
11591  * dragged.  This function is called on every column pair in turn at the
11592  * beginning of a column drag to determine where a drop can take place.  The
11593  * arguments passed to @func are: the @tree_view, the #GtkTreeViewColumn being
11594  * dragged, the two #GtkTreeViewColumn s determining the drop spot, and
11595  * @user_data.  If either of the #GtkTreeViewColumn arguments for the drop spot
11596  * are %NULL, then they indicate an edge.  If @func is set to be %NULL, then
11597  * @tree_view reverts to the default behavior of allowing all columns to be
11598  * dropped everywhere.
11599  **/
11600 void
11601 gtk_tree_view_set_column_drag_function (GtkTreeView               *tree_view,
11602                                         GtkTreeViewColumnDropFunc  func,
11603                                         gpointer                   user_data,
11604                                         GDestroyNotify             destroy)
11605 {
11606   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
11607
11608   if (tree_view->priv->column_drop_func_data_destroy)
11609     tree_view->priv->column_drop_func_data_destroy (tree_view->priv->column_drop_func_data);
11610
11611   tree_view->priv->column_drop_func = func;
11612   tree_view->priv->column_drop_func_data = user_data;
11613   tree_view->priv->column_drop_func_data_destroy = destroy;
11614 }
11615
11616 /**
11617  * gtk_tree_view_scroll_to_point:
11618  * @tree_view: a #GtkTreeView
11619  * @tree_x: X coordinate of new top-left pixel of visible area, or -1
11620  * @tree_y: Y coordinate of new top-left pixel of visible area, or -1
11621  *
11622  * Scrolls the tree view such that the top-left corner of the visible
11623  * area is @tree_x, @tree_y, where @tree_x and @tree_y are specified
11624  * in tree coordinates.  The @tree_view must be realized before
11625  * this function is called.  If it isn't, you probably want to be
11626  * using gtk_tree_view_scroll_to_cell().
11627  *
11628  * If either @tree_x or @tree_y are -1, then that direction isn't scrolled.
11629  **/
11630 void
11631 gtk_tree_view_scroll_to_point (GtkTreeView *tree_view,
11632                                gint         tree_x,
11633                                gint         tree_y)
11634 {
11635   GtkAdjustment *hadj;
11636   GtkAdjustment *vadj;
11637
11638   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
11639   g_return_if_fail (gtk_widget_get_realized (GTK_WIDGET (tree_view)));
11640
11641   hadj = tree_view->priv->hadjustment;
11642   vadj = tree_view->priv->vadjustment;
11643
11644   if (tree_x != -1)
11645     gtk_adjustment_set_value (hadj, tree_x);
11646   if (tree_y != -1)
11647     gtk_adjustment_set_value (vadj, tree_y);
11648 }
11649
11650 /**
11651  * gtk_tree_view_scroll_to_cell:
11652  * @tree_view: A #GtkTreeView.
11653  * @path: (allow-none): The path of the row to move to, or %NULL.
11654  * @column: (allow-none): The #GtkTreeViewColumn to move horizontally to, or %NULL.
11655  * @use_align: whether to use alignment arguments, or %FALSE.
11656  * @row_align: The vertical alignment of the row specified by @path.
11657  * @col_align: The horizontal alignment of the column specified by @column.
11658  *
11659  * Moves the alignments of @tree_view to the position specified by @column and
11660  * @path.  If @column is %NULL, then no horizontal scrolling occurs.  Likewise,
11661  * if @path is %NULL no vertical scrolling occurs.  At a minimum, one of @column
11662  * or @path need to be non-%NULL.  @row_align determines where the row is
11663  * placed, and @col_align determines where @column is placed.  Both are expected
11664  * to be between 0.0 and 1.0. 0.0 means left/top alignment, 1.0 means
11665  * right/bottom alignment, 0.5 means center.
11666  *
11667  * If @use_align is %FALSE, then the alignment arguments are ignored, and the
11668  * tree does the minimum amount of work to scroll the cell onto the screen.
11669  * This means that the cell will be scrolled to the edge closest to its current
11670  * position.  If the cell is currently visible on the screen, nothing is done.
11671  *
11672  * This function only works if the model is set, and @path is a valid row on the
11673  * model.  If the model changes before the @tree_view is realized, the centered
11674  * path will be modified to reflect this change.
11675  **/
11676 void
11677 gtk_tree_view_scroll_to_cell (GtkTreeView       *tree_view,
11678                               GtkTreePath       *path,
11679                               GtkTreeViewColumn *column,
11680                               gboolean           use_align,
11681                               gfloat             row_align,
11682                               gfloat             col_align)
11683 {
11684   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
11685   g_return_if_fail (tree_view->priv->model != NULL);
11686   g_return_if_fail (tree_view->priv->tree != NULL);
11687   g_return_if_fail (row_align >= 0.0 && row_align <= 1.0);
11688   g_return_if_fail (col_align >= 0.0 && col_align <= 1.0);
11689   g_return_if_fail (path != NULL || column != NULL);
11690
11691 #if 0
11692   g_print ("gtk_tree_view_scroll_to_cell:\npath: %s\ncolumn: %s\nuse_align: %d\nrow_align: %f\ncol_align: %f\n",
11693            gtk_tree_path_to_string (path), column?"non-null":"null", use_align, row_align, col_align);
11694 #endif
11695   row_align = CLAMP (row_align, 0.0, 1.0);
11696   col_align = CLAMP (col_align, 0.0, 1.0);
11697
11698
11699   /* Note: Despite the benefits that come from having one code path for the
11700    * scrolling code, we short-circuit validate_visible_area's immplementation as
11701    * it is much slower than just going to the point.
11702    */
11703   if (!gtk_widget_get_visible (GTK_WIDGET (tree_view)) ||
11704       !gtk_widget_get_realized (GTK_WIDGET (tree_view)) ||
11705       _gtk_widget_get_alloc_needed (GTK_WIDGET (tree_view)) ||
11706       GTK_RBNODE_FLAG_SET (tree_view->priv->tree->root, GTK_RBNODE_DESCENDANTS_INVALID))
11707     {
11708       if (tree_view->priv->scroll_to_path)
11709         gtk_tree_row_reference_free (tree_view->priv->scroll_to_path);
11710
11711       tree_view->priv->scroll_to_path = NULL;
11712       tree_view->priv->scroll_to_column = NULL;
11713
11714       if (path)
11715         tree_view->priv->scroll_to_path = gtk_tree_row_reference_new_proxy (G_OBJECT (tree_view), tree_view->priv->model, path);
11716       if (column)
11717         tree_view->priv->scroll_to_column = column;
11718       tree_view->priv->scroll_to_use_align = use_align;
11719       tree_view->priv->scroll_to_row_align = row_align;
11720       tree_view->priv->scroll_to_col_align = col_align;
11721
11722       install_presize_handler (tree_view);
11723     }
11724   else
11725     {
11726       GdkRectangle cell_rect;
11727       GdkRectangle vis_rect;
11728       gint dest_x, dest_y;
11729
11730       gtk_tree_view_get_background_area (tree_view, path, column, &cell_rect);
11731       gtk_tree_view_get_visible_rect (tree_view, &vis_rect);
11732
11733       cell_rect.y = TREE_WINDOW_Y_TO_RBTREE_Y (tree_view, cell_rect.y);
11734
11735       dest_x = vis_rect.x;
11736       dest_y = vis_rect.y;
11737
11738       if (column)
11739         {
11740           if (use_align)
11741             {
11742               dest_x = cell_rect.x - ((vis_rect.width - cell_rect.width) * col_align);
11743             }
11744           else
11745             {
11746               if (cell_rect.x < vis_rect.x)
11747                 dest_x = cell_rect.x;
11748               if (cell_rect.x + cell_rect.width > vis_rect.x + vis_rect.width)
11749                 dest_x = cell_rect.x + cell_rect.width - vis_rect.width;
11750             }
11751         }
11752
11753       if (path)
11754         {
11755           if (use_align)
11756             {
11757               dest_y = cell_rect.y - ((vis_rect.height - cell_rect.height) * row_align);
11758               dest_y = MAX (dest_y, 0);
11759             }
11760           else
11761             {
11762               if (cell_rect.y < vis_rect.y)
11763                 dest_y = cell_rect.y;
11764               if (cell_rect.y + cell_rect.height > vis_rect.y + vis_rect.height)
11765                 dest_y = cell_rect.y + cell_rect.height - vis_rect.height;
11766             }
11767         }
11768
11769       gtk_tree_view_scroll_to_point (tree_view, dest_x, dest_y);
11770     }
11771 }
11772
11773 /**
11774  * gtk_tree_view_row_activated:
11775  * @tree_view: A #GtkTreeView
11776  * @path: The #GtkTreePath to be activated.
11777  * @column: The #GtkTreeViewColumn to be activated.
11778  *
11779  * Activates the cell determined by @path and @column.
11780  **/
11781 void
11782 gtk_tree_view_row_activated (GtkTreeView       *tree_view,
11783                              GtkTreePath       *path,
11784                              GtkTreeViewColumn *column)
11785 {
11786   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
11787
11788   g_signal_emit (tree_view, tree_view_signals[ROW_ACTIVATED], 0, path, column);
11789 }
11790
11791
11792 static void
11793 gtk_tree_view_expand_all_emission_helper (GtkRBTree *tree,
11794                                           GtkRBNode *node,
11795                                           gpointer   data)
11796 {
11797   GtkTreeView *tree_view = data;
11798
11799   if ((node->flags & GTK_RBNODE_IS_PARENT) == GTK_RBNODE_IS_PARENT &&
11800       node->children)
11801     {
11802       GtkTreePath *path;
11803       GtkTreeIter iter;
11804
11805       path = _gtk_tree_view_find_path (tree_view, tree, node);
11806       gtk_tree_model_get_iter (tree_view->priv->model, &iter, path);
11807
11808       g_signal_emit (tree_view, tree_view_signals[ROW_EXPANDED], 0, &iter, path);
11809
11810       gtk_tree_path_free (path);
11811     }
11812
11813   if (node->children)
11814     _gtk_rbtree_traverse (node->children,
11815                           node->children->root,
11816                           G_PRE_ORDER,
11817                           gtk_tree_view_expand_all_emission_helper,
11818                           tree_view);
11819 }
11820
11821 /**
11822  * gtk_tree_view_expand_all:
11823  * @tree_view: A #GtkTreeView.
11824  *
11825  * Recursively expands all nodes in the @tree_view.
11826  **/
11827 void
11828 gtk_tree_view_expand_all (GtkTreeView *tree_view)
11829 {
11830   GtkTreePath *path;
11831   GtkRBTree *tree;
11832   GtkRBNode *node;
11833
11834   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
11835
11836   if (tree_view->priv->tree == NULL)
11837     return;
11838
11839   path = gtk_tree_path_new_first ();
11840   _gtk_tree_view_find_node (tree_view, path, &tree, &node);
11841
11842   while (node)
11843     {
11844       gtk_tree_view_real_expand_row (tree_view, path, tree, node, TRUE, FALSE);
11845       node = _gtk_rbtree_next (tree, node);
11846       gtk_tree_path_next (path);
11847   }
11848
11849   gtk_tree_path_free (path);
11850 }
11851
11852 /* Timeout to animate the expander during expands and collapses */
11853 static gboolean
11854 expand_collapse_timeout (gpointer data)
11855 {
11856   return do_expand_collapse (data);
11857 }
11858
11859 static void
11860 add_expand_collapse_timeout (GtkTreeView *tree_view,
11861                              GtkRBTree   *tree,
11862                              GtkRBNode   *node,
11863                              gboolean     expand)
11864 {
11865   if (tree_view->priv->expand_collapse_timeout != 0)
11866     return;
11867
11868   tree_view->priv->expand_collapse_timeout =
11869       gdk_threads_add_timeout (50, expand_collapse_timeout, tree_view);
11870   tree_view->priv->expanded_collapsed_tree = tree;
11871   tree_view->priv->expanded_collapsed_node = node;
11872
11873   if (expand)
11874     GTK_RBNODE_SET_FLAG (node, GTK_RBNODE_IS_SEMI_COLLAPSED);
11875   else
11876     GTK_RBNODE_SET_FLAG (node, GTK_RBNODE_IS_SEMI_EXPANDED);
11877 }
11878
11879 static void
11880 remove_expand_collapse_timeout (GtkTreeView *tree_view)
11881 {
11882   if (tree_view->priv->expand_collapse_timeout)
11883     {
11884       g_source_remove (tree_view->priv->expand_collapse_timeout);
11885       tree_view->priv->expand_collapse_timeout = 0;
11886     }
11887
11888   if (tree_view->priv->expanded_collapsed_node != NULL)
11889     {
11890       GTK_RBNODE_UNSET_FLAG (tree_view->priv->expanded_collapsed_node, GTK_RBNODE_IS_SEMI_EXPANDED);
11891       GTK_RBNODE_UNSET_FLAG (tree_view->priv->expanded_collapsed_node, GTK_RBNODE_IS_SEMI_COLLAPSED);
11892
11893       tree_view->priv->expanded_collapsed_node = NULL;
11894     }
11895 }
11896
11897 static void
11898 cancel_arrow_animation (GtkTreeView *tree_view)
11899 {
11900   if (tree_view->priv->expand_collapse_timeout)
11901     {
11902       while (do_expand_collapse (tree_view));
11903
11904       remove_expand_collapse_timeout (tree_view);
11905     }
11906 }
11907
11908 static gboolean
11909 do_expand_collapse (GtkTreeView *tree_view)
11910 {
11911   GtkRBNode *node;
11912   GtkRBTree *tree;
11913   gboolean expanding;
11914   gboolean redraw;
11915
11916   redraw = FALSE;
11917   expanding = TRUE;
11918
11919   node = tree_view->priv->expanded_collapsed_node;
11920   tree = tree_view->priv->expanded_collapsed_tree;
11921
11922   if (node->children == NULL)
11923     expanding = FALSE;
11924
11925   if (expanding)
11926     {
11927       if (GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_SEMI_COLLAPSED))
11928         {
11929           GTK_RBNODE_UNSET_FLAG (node, GTK_RBNODE_IS_SEMI_COLLAPSED);
11930           GTK_RBNODE_SET_FLAG (node, GTK_RBNODE_IS_SEMI_EXPANDED);
11931
11932           redraw = TRUE;
11933
11934         }
11935       else if (GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_SEMI_EXPANDED))
11936         {
11937           GTK_RBNODE_UNSET_FLAG (node, GTK_RBNODE_IS_SEMI_EXPANDED);
11938
11939           redraw = TRUE;
11940         }
11941     }
11942   else
11943     {
11944       if (GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_SEMI_EXPANDED))
11945         {
11946           GTK_RBNODE_UNSET_FLAG (node, GTK_RBNODE_IS_SEMI_EXPANDED);
11947           GTK_RBNODE_SET_FLAG (node, GTK_RBNODE_IS_SEMI_COLLAPSED);
11948
11949           redraw = TRUE;
11950         }
11951       else if (GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_SEMI_COLLAPSED))
11952         {
11953           GTK_RBNODE_UNSET_FLAG (node, GTK_RBNODE_IS_SEMI_COLLAPSED);
11954
11955           redraw = TRUE;
11956
11957         }
11958     }
11959
11960   if (redraw)
11961     {
11962       gtk_tree_view_queue_draw_arrow (tree_view, tree, node);
11963
11964       return TRUE;
11965     }
11966
11967   return FALSE;
11968 }
11969
11970 /**
11971  * gtk_tree_view_collapse_all:
11972  * @tree_view: A #GtkTreeView.
11973  *
11974  * Recursively collapses all visible, expanded nodes in @tree_view.
11975  **/
11976 void
11977 gtk_tree_view_collapse_all (GtkTreeView *tree_view)
11978 {
11979   GtkRBTree *tree;
11980   GtkRBNode *node;
11981   GtkTreePath *path;
11982   gint *indices;
11983
11984   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
11985
11986   if (tree_view->priv->tree == NULL)
11987     return;
11988
11989   path = gtk_tree_path_new ();
11990   gtk_tree_path_down (path);
11991   indices = gtk_tree_path_get_indices (path);
11992
11993   tree = tree_view->priv->tree;
11994   node = tree->root;
11995   while (node && node->left != tree->nil)
11996     node = node->left;
11997
11998   while (node)
11999     {
12000       if (node->children)
12001         gtk_tree_view_real_collapse_row (tree_view, path, tree, node, FALSE);
12002       indices[0]++;
12003       node = _gtk_rbtree_next (tree, node);
12004     }
12005
12006   gtk_tree_path_free (path);
12007 }
12008
12009 /**
12010  * gtk_tree_view_expand_to_path:
12011  * @tree_view: A #GtkTreeView.
12012  * @path: path to a row.
12013  *
12014  * Expands the row at @path. This will also expand all parent rows of
12015  * @path as necessary.
12016  *
12017  * Since: 2.2
12018  **/
12019 void
12020 gtk_tree_view_expand_to_path (GtkTreeView *tree_view,
12021                               GtkTreePath *path)
12022 {
12023   gint i, depth;
12024   gint *indices;
12025   GtkTreePath *tmp;
12026
12027   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
12028   g_return_if_fail (path != NULL);
12029
12030   depth = gtk_tree_path_get_depth (path);
12031   indices = gtk_tree_path_get_indices (path);
12032
12033   tmp = gtk_tree_path_new ();
12034   g_return_if_fail (tmp != NULL);
12035
12036   for (i = 0; i < depth; i++)
12037     {
12038       gtk_tree_path_append_index (tmp, indices[i]);
12039       gtk_tree_view_expand_row (tree_view, tmp, FALSE);
12040     }
12041
12042   gtk_tree_path_free (tmp);
12043 }
12044
12045 /* FIXME the bool return values for expand_row and collapse_row are
12046  * not analagous; they should be TRUE if the row had children and
12047  * was not already in the requested state.
12048  */
12049
12050
12051 static gboolean
12052 gtk_tree_view_real_expand_row (GtkTreeView *tree_view,
12053                                GtkTreePath *path,
12054                                GtkRBTree   *tree,
12055                                GtkRBNode   *node,
12056                                gboolean     open_all,
12057                                gboolean     animate)
12058 {
12059   GtkTreeIter iter;
12060   GtkTreeIter temp;
12061   gboolean expand;
12062
12063   if (animate)
12064     g_object_get (gtk_widget_get_settings (GTK_WIDGET (tree_view)),
12065                   "gtk-enable-animations", &animate,
12066                   NULL);
12067
12068   remove_auto_expand_timeout (tree_view);
12069
12070   if (node->children && !open_all)
12071     return FALSE;
12072
12073   if (! GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_PARENT))
12074     return FALSE;
12075
12076   gtk_tree_model_get_iter (tree_view->priv->model, &iter, path);
12077   if (! gtk_tree_model_iter_has_child (tree_view->priv->model, &iter))
12078     return FALSE;
12079
12080
12081    if (node->children && open_all)
12082     {
12083       gboolean retval = FALSE;
12084       GtkTreePath *tmp_path = gtk_tree_path_copy (path);
12085
12086       gtk_tree_path_append_index (tmp_path, 0);
12087       tree = node->children;
12088       node = tree->root;
12089       while (node->left != tree->nil)
12090         node = node->left;
12091       /* try to expand the children */
12092       do
12093         {
12094          gboolean t;
12095          t = gtk_tree_view_real_expand_row (tree_view, tmp_path, tree, node,
12096                                             TRUE, animate);
12097          if (t)
12098            retval = TRUE;
12099
12100          gtk_tree_path_next (tmp_path);
12101          node = _gtk_rbtree_next (tree, node);
12102        }
12103       while (node != NULL);
12104
12105       gtk_tree_path_free (tmp_path);
12106
12107       return retval;
12108     }
12109
12110   g_signal_emit (tree_view, tree_view_signals[TEST_EXPAND_ROW], 0, &iter, path, &expand);
12111
12112   if (!gtk_tree_model_iter_has_child (tree_view->priv->model, &iter))
12113     return FALSE;
12114
12115   if (expand)
12116     return FALSE;
12117
12118   node->children = _gtk_rbtree_new ();
12119   node->children->parent_tree = tree;
12120   node->children->parent_node = node;
12121
12122   gtk_tree_model_iter_children (tree_view->priv->model, &temp, &iter);
12123
12124   gtk_tree_view_build_tree (tree_view,
12125                             node->children,
12126                             &temp,
12127                             gtk_tree_path_get_depth (path) + 1,
12128                             open_all);
12129
12130   remove_expand_collapse_timeout (tree_view);
12131
12132   if (animate)
12133     add_expand_collapse_timeout (tree_view, tree, node, TRUE);
12134
12135   install_presize_handler (tree_view);
12136
12137   g_signal_emit (tree_view, tree_view_signals[ROW_EXPANDED], 0, &iter, path);
12138   if (open_all && node->children)
12139     {
12140       _gtk_rbtree_traverse (node->children,
12141                             node->children->root,
12142                             G_PRE_ORDER,
12143                             gtk_tree_view_expand_all_emission_helper,
12144                             tree_view);
12145     }
12146   return TRUE;
12147 }
12148
12149
12150 /**
12151  * gtk_tree_view_expand_row:
12152  * @tree_view: a #GtkTreeView
12153  * @path: path to a row
12154  * @open_all: whether to recursively expand, or just expand immediate children
12155  *
12156  * Opens the row so its children are visible.
12157  *
12158  * Return value: %TRUE if the row existed and had children
12159  **/
12160 gboolean
12161 gtk_tree_view_expand_row (GtkTreeView *tree_view,
12162                           GtkTreePath *path,
12163                           gboolean     open_all)
12164 {
12165   GtkRBTree *tree;
12166   GtkRBNode *node;
12167
12168   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), FALSE);
12169   g_return_val_if_fail (tree_view->priv->model != NULL, FALSE);
12170   g_return_val_if_fail (path != NULL, FALSE);
12171
12172   if (_gtk_tree_view_find_node (tree_view,
12173                                 path,
12174                                 &tree,
12175                                 &node))
12176     return FALSE;
12177
12178   if (tree != NULL)
12179     return gtk_tree_view_real_expand_row (tree_view, path, tree, node, open_all, FALSE);
12180   else
12181     return FALSE;
12182 }
12183
12184 static gboolean
12185 gtk_tree_view_real_collapse_row (GtkTreeView *tree_view,
12186                                  GtkTreePath *path,
12187                                  GtkRBTree   *tree,
12188                                  GtkRBNode   *node,
12189                                  gboolean     animate)
12190 {
12191   GtkTreeIter iter;
12192   GtkTreeIter children;
12193   gboolean collapse;
12194   gint x, y;
12195   GList *list;
12196   GdkWindow *child, *parent;
12197
12198   if (animate)
12199     g_object_get (gtk_widget_get_settings (GTK_WIDGET (tree_view)),
12200                   "gtk-enable-animations", &animate,
12201                   NULL);
12202
12203   remove_auto_expand_timeout (tree_view);
12204
12205   if (node->children == NULL)
12206     return FALSE;
12207
12208   gtk_tree_model_get_iter (tree_view->priv->model, &iter, path);
12209
12210   g_signal_emit (tree_view, tree_view_signals[TEST_COLLAPSE_ROW], 0, &iter, path, &collapse);
12211
12212   if (collapse)
12213     return FALSE;
12214
12215   /* if the prelighted node is a child of us, we want to unprelight it.  We have
12216    * a chance to prelight the correct node below */
12217
12218   if (tree_view->priv->prelight_tree)
12219     {
12220       GtkRBTree *parent_tree;
12221       GtkRBNode *parent_node;
12222
12223       parent_tree = tree_view->priv->prelight_tree->parent_tree;
12224       parent_node = tree_view->priv->prelight_tree->parent_node;
12225       while (parent_tree)
12226         {
12227           if (parent_tree == tree && parent_node == node)
12228             {
12229               ensure_unprelighted (tree_view);
12230               break;
12231             }
12232           parent_node = parent_tree->parent_node;
12233           parent_tree = parent_tree->parent_tree;
12234         }
12235     }
12236
12237   TREE_VIEW_INTERNAL_ASSERT (gtk_tree_model_iter_children (tree_view->priv->model, &children, &iter), FALSE);
12238
12239   for (list = tree_view->priv->columns; list; list = list->next)
12240     {
12241       GtkTreeViewColumn *column = list->data;
12242
12243       if (column->visible == FALSE)
12244         continue;
12245       if (gtk_tree_view_column_get_sizing (column) == GTK_TREE_VIEW_COLUMN_AUTOSIZE)
12246         _gtk_tree_view_column_cell_set_dirty (column, TRUE);
12247     }
12248
12249   if (tree_view->priv->destroy_count_func)
12250     {
12251       GtkTreePath *child_path;
12252       gint child_count = 0;
12253       child_path = gtk_tree_path_copy (path);
12254       gtk_tree_path_down (child_path);
12255       if (node->children)
12256         _gtk_rbtree_traverse (node->children, node->children->root, G_POST_ORDER, count_children_helper, &child_count);
12257       tree_view->priv->destroy_count_func (tree_view, child_path, child_count, tree_view->priv->destroy_count_data);
12258       gtk_tree_path_free (child_path);
12259     }
12260
12261   if (gtk_tree_row_reference_valid (tree_view->priv->cursor))
12262     {
12263       GtkTreePath *cursor_path = gtk_tree_row_reference_get_path (tree_view->priv->cursor);
12264
12265       if (gtk_tree_path_is_ancestor (path, cursor_path))
12266         {
12267           gtk_tree_row_reference_free (tree_view->priv->cursor);
12268           tree_view->priv->cursor = gtk_tree_row_reference_new_proxy (G_OBJECT (tree_view),
12269                                                                       tree_view->priv->model,
12270                                                                       path);
12271         }
12272       gtk_tree_path_free (cursor_path);
12273     }
12274
12275   if (gtk_tree_row_reference_valid (tree_view->priv->anchor))
12276     {
12277       GtkTreePath *anchor_path = gtk_tree_row_reference_get_path (tree_view->priv->anchor);
12278       if (gtk_tree_path_is_ancestor (path, anchor_path))
12279         {
12280           gtk_tree_row_reference_free (tree_view->priv->anchor);
12281           tree_view->priv->anchor = NULL;
12282         }
12283       gtk_tree_path_free (anchor_path);
12284     }
12285
12286   /* Stop a pending double click */
12287   tree_view->priv->last_button_x = -1;
12288   tree_view->priv->last_button_y = -1;
12289
12290   remove_expand_collapse_timeout (tree_view);
12291
12292   if (gtk_tree_view_unref_and_check_selection_tree (tree_view, node->children))
12293     {
12294       _gtk_rbtree_remove (node->children);
12295       g_signal_emit_by_name (tree_view->priv->selection, "changed");
12296     }
12297   else
12298     _gtk_rbtree_remove (node->children);
12299
12300   if (animate)
12301     add_expand_collapse_timeout (tree_view, tree, node, FALSE);
12302
12303   if (gtk_widget_get_mapped (GTK_WIDGET (tree_view)))
12304     {
12305       gtk_widget_queue_resize (GTK_WIDGET (tree_view));
12306     }
12307
12308   g_signal_emit (tree_view, tree_view_signals[ROW_COLLAPSED], 0, &iter, path);
12309
12310   if (gtk_widget_get_mapped (GTK_WIDGET (tree_view)))
12311     {
12312       /* now that we've collapsed all rows, we want to try to set the prelight
12313        * again. To do this, we fake a motion event and send it to ourselves. */
12314
12315       child = tree_view->priv->bin_window;
12316       parent = gdk_window_get_parent (child);
12317
12318       if (gdk_window_get_pointer (parent, &x, &y, NULL) == child)
12319         {
12320           GdkEventMotion event;
12321           gint child_x, child_y;
12322
12323           gdk_window_get_position (child, &child_x, &child_y);
12324
12325           event.window = tree_view->priv->bin_window;
12326           event.x = x - child_x;
12327           event.y = y - child_y;
12328
12329           /* despite the fact this isn't a real event, I'm almost positive it will
12330            * never trigger a drag event.  maybe_drag is the only function that uses
12331            * more than just event.x and event.y. */
12332           gtk_tree_view_motion_bin_window (GTK_WIDGET (tree_view), &event);
12333         }
12334     }
12335
12336   return TRUE;
12337 }
12338
12339 /**
12340  * gtk_tree_view_collapse_row:
12341  * @tree_view: a #GtkTreeView
12342  * @path: path to a row in the @tree_view
12343  *
12344  * Collapses a row (hides its child rows, if they exist).
12345  *
12346  * Return value: %TRUE if the row was collapsed.
12347  **/
12348 gboolean
12349 gtk_tree_view_collapse_row (GtkTreeView *tree_view,
12350                             GtkTreePath *path)
12351 {
12352   GtkRBTree *tree;
12353   GtkRBNode *node;
12354
12355   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), FALSE);
12356   g_return_val_if_fail (tree_view->priv->tree != NULL, FALSE);
12357   g_return_val_if_fail (path != NULL, FALSE);
12358
12359   if (_gtk_tree_view_find_node (tree_view,
12360                                 path,
12361                                 &tree,
12362                                 &node))
12363     return FALSE;
12364
12365   if (tree == NULL || node->children == NULL)
12366     return FALSE;
12367
12368   return gtk_tree_view_real_collapse_row (tree_view, path, tree, node, FALSE);
12369 }
12370
12371 static void
12372 gtk_tree_view_map_expanded_rows_helper (GtkTreeView            *tree_view,
12373                                         GtkRBTree              *tree,
12374                                         GtkTreePath            *path,
12375                                         GtkTreeViewMappingFunc  func,
12376                                         gpointer                user_data)
12377 {
12378   GtkRBNode *node;
12379
12380   if (tree == NULL || tree->root == NULL)
12381     return;
12382
12383   node = tree->root;
12384
12385   while (node && node->left != tree->nil)
12386     node = node->left;
12387
12388   while (node)
12389     {
12390       if (node->children)
12391         {
12392           (* func) (tree_view, path, user_data);
12393           gtk_tree_path_down (path);
12394           gtk_tree_view_map_expanded_rows_helper (tree_view, node->children, path, func, user_data);
12395           gtk_tree_path_up (path);
12396         }
12397       gtk_tree_path_next (path);
12398       node = _gtk_rbtree_next (tree, node);
12399     }
12400 }
12401
12402 /**
12403  * gtk_tree_view_map_expanded_rows:
12404  * @tree_view: A #GtkTreeView
12405  * @func: (scope call): A function to be called
12406  * @data: User data to be passed to the function.
12407  *
12408  * Calls @func on all expanded rows.
12409  **/
12410 void
12411 gtk_tree_view_map_expanded_rows (GtkTreeView            *tree_view,
12412                                  GtkTreeViewMappingFunc  func,
12413                                  gpointer                user_data)
12414 {
12415   GtkTreePath *path;
12416
12417   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
12418   g_return_if_fail (func != NULL);
12419
12420   path = gtk_tree_path_new_first ();
12421
12422   gtk_tree_view_map_expanded_rows_helper (tree_view,
12423                                           tree_view->priv->tree,
12424                                           path, func, user_data);
12425
12426   gtk_tree_path_free (path);
12427 }
12428
12429 /**
12430  * gtk_tree_view_row_expanded:
12431  * @tree_view: A #GtkTreeView.
12432  * @path: A #GtkTreePath to test expansion state.
12433  *
12434  * Returns %TRUE if the node pointed to by @path is expanded in @tree_view.
12435  *
12436  * Return value: %TRUE if #path is expanded.
12437  **/
12438 gboolean
12439 gtk_tree_view_row_expanded (GtkTreeView *tree_view,
12440                             GtkTreePath *path)
12441 {
12442   GtkRBTree *tree;
12443   GtkRBNode *node;
12444
12445   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), FALSE);
12446   g_return_val_if_fail (path != NULL, FALSE);
12447
12448   _gtk_tree_view_find_node (tree_view, path, &tree, &node);
12449
12450   if (node == NULL)
12451     return FALSE;
12452
12453   return (node->children != NULL);
12454 }
12455
12456 /**
12457  * gtk_tree_view_get_reorderable:
12458  * @tree_view: a #GtkTreeView
12459  *
12460  * Retrieves whether the user can reorder the tree via drag-and-drop. See
12461  * gtk_tree_view_set_reorderable().
12462  *
12463  * Return value: %TRUE if the tree can be reordered.
12464  **/
12465 gboolean
12466 gtk_tree_view_get_reorderable (GtkTreeView *tree_view)
12467 {
12468   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), FALSE);
12469
12470   return tree_view->priv->reorderable;
12471 }
12472
12473 /**
12474  * gtk_tree_view_set_reorderable:
12475  * @tree_view: A #GtkTreeView.
12476  * @reorderable: %TRUE, if the tree can be reordered.
12477  *
12478  * This function is a convenience function to allow you to reorder
12479  * models that support the #GtkDragSourceIface and the
12480  * #GtkDragDestIface.  Both #GtkTreeStore and #GtkListStore support
12481  * these.  If @reorderable is %TRUE, then the user can reorder the
12482  * model by dragging and dropping rows. The developer can listen to
12483  * these changes by connecting to the model's row_inserted and
12484  * row_deleted signals. The reordering is implemented by setting up
12485  * the tree view as a drag source and destination. Therefore, drag and
12486  * drop can not be used in a reorderable view for any other purpose.
12487  *
12488  * This function does not give you any degree of control over the order -- any
12489  * reordering is allowed.  If more control is needed, you should probably
12490  * handle drag and drop manually.
12491  **/
12492 void
12493 gtk_tree_view_set_reorderable (GtkTreeView *tree_view,
12494                                gboolean     reorderable)
12495 {
12496   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
12497
12498   reorderable = reorderable != FALSE;
12499
12500   if (tree_view->priv->reorderable == reorderable)
12501     return;
12502
12503   if (reorderable)
12504     {
12505       const GtkTargetEntry row_targets[] = {
12506         { "GTK_TREE_MODEL_ROW", GTK_TARGET_SAME_WIDGET, 0 }
12507       };
12508
12509       gtk_tree_view_enable_model_drag_source (tree_view,
12510                                               GDK_BUTTON1_MASK,
12511                                               row_targets,
12512                                               G_N_ELEMENTS (row_targets),
12513                                               GDK_ACTION_MOVE);
12514       gtk_tree_view_enable_model_drag_dest (tree_view,
12515                                             row_targets,
12516                                             G_N_ELEMENTS (row_targets),
12517                                             GDK_ACTION_MOVE);
12518     }
12519   else
12520     {
12521       gtk_tree_view_unset_rows_drag_source (tree_view);
12522       gtk_tree_view_unset_rows_drag_dest (tree_view);
12523     }
12524
12525   tree_view->priv->reorderable = reorderable;
12526
12527   g_object_notify (G_OBJECT (tree_view), "reorderable");
12528 }
12529
12530 static void
12531 gtk_tree_view_real_set_cursor (GtkTreeView     *tree_view,
12532                                GtkTreePath     *path,
12533                                gboolean         clear_and_select,
12534                                gboolean         clamp_node)
12535 {
12536   GtkRBTree *tree = NULL;
12537   GtkRBNode *node = NULL;
12538
12539   if (gtk_tree_row_reference_valid (tree_view->priv->cursor))
12540     {
12541       GtkTreePath *cursor_path;
12542       cursor_path = gtk_tree_row_reference_get_path (tree_view->priv->cursor);
12543       gtk_tree_view_queue_draw_path (tree_view, cursor_path, NULL);
12544       gtk_tree_path_free (cursor_path);
12545     }
12546
12547   gtk_tree_row_reference_free (tree_view->priv->cursor);
12548   tree_view->priv->cursor = NULL;
12549
12550   /* One cannot set the cursor on a separator.   Also, if
12551    * _gtk_tree_view_find_node returns TRUE, it ran out of tree
12552    * before finding the tree and node belonging to path.  The
12553    * path maps to a non-existing path and we will silently bail out.
12554    * We unset tree and node to avoid further processing.
12555    */
12556   if (!row_is_separator (tree_view, NULL, path)
12557       && _gtk_tree_view_find_node (tree_view, path, &tree, &node) == FALSE)
12558     {
12559       tree_view->priv->cursor =
12560           gtk_tree_row_reference_new_proxy (G_OBJECT (tree_view),
12561                                             tree_view->priv->model,
12562                                             path);
12563     }
12564   else
12565     {
12566       tree = NULL;
12567       node = NULL;
12568     }
12569
12570   if (tree != NULL)
12571     {
12572       GtkRBTree *new_tree = NULL;
12573       GtkRBNode *new_node = NULL;
12574
12575       if (clear_and_select && !tree_view->priv->ctrl_pressed)
12576         {
12577           GtkTreeSelectMode mode = 0;
12578
12579           if (tree_view->priv->ctrl_pressed)
12580             mode |= GTK_TREE_SELECT_MODE_TOGGLE;
12581           if (tree_view->priv->shift_pressed)
12582             mode |= GTK_TREE_SELECT_MODE_EXTEND;
12583
12584           _gtk_tree_selection_internal_select_node (tree_view->priv->selection,
12585                                                     node, tree, path, mode,
12586                                                     FALSE);
12587         }
12588
12589       /* We have to re-find tree and node here again, somebody might have
12590        * cleared the node or the whole tree in the GtkTreeSelection::changed
12591        * callback. If the nodes differ we bail out here.
12592        */
12593       _gtk_tree_view_find_node (tree_view, path, &new_tree, &new_node);
12594
12595       if (tree != new_tree || node != new_node)
12596         return;
12597
12598       if (clamp_node)
12599         {
12600           gtk_tree_view_clamp_node_visible (tree_view, tree, node);
12601           _gtk_tree_view_queue_draw_node (tree_view, tree, node, NULL);
12602         }
12603     }
12604
12605   g_signal_emit (tree_view, tree_view_signals[CURSOR_CHANGED], 0);
12606 }
12607
12608 /**
12609  * gtk_tree_view_get_cursor:
12610  * @tree_view: A #GtkTreeView
12611  * @path: (out) (allow-none): A pointer to be filled with the current cursor path, or %NULL
12612  * @focus_column: (out) (allow-none): A pointer to be filled with the current focus column, or %NULL
12613  *
12614  * Fills in @path and @focus_column with the current path and focus column.  If
12615  * the cursor isn't currently set, then *@path will be %NULL.  If no column
12616  * currently has focus, then *@focus_column will be %NULL.
12617  *
12618  * The returned #GtkTreePath must be freed with gtk_tree_path_free() when
12619  * you are done with it.
12620  **/
12621 void
12622 gtk_tree_view_get_cursor (GtkTreeView        *tree_view,
12623                           GtkTreePath       **path,
12624                           GtkTreeViewColumn **focus_column)
12625 {
12626   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
12627
12628   if (path)
12629     {
12630       if (gtk_tree_row_reference_valid (tree_view->priv->cursor))
12631         *path = gtk_tree_row_reference_get_path (tree_view->priv->cursor);
12632       else
12633         *path = NULL;
12634     }
12635
12636   if (focus_column)
12637     {
12638       *focus_column = tree_view->priv->focus_column;
12639     }
12640 }
12641
12642 /**
12643  * gtk_tree_view_set_cursor:
12644  * @tree_view: A #GtkTreeView
12645  * @path: A #GtkTreePath
12646  * @focus_column: (allow-none): A #GtkTreeViewColumn, or %NULL
12647  * @start_editing: %TRUE if the specified cell should start being edited.
12648  *
12649  * Sets the current keyboard focus to be at @path, and selects it.  This is
12650  * useful when you want to focus the user's attention on a particular row.  If
12651  * @focus_column is not %NULL, then focus is given to the column specified by
12652  * it. Additionally, if @focus_column is specified, and @start_editing is
12653  * %TRUE, then editing should be started in the specified cell.
12654  * This function is often followed by @gtk_widget_grab_focus (@tree_view)
12655  * in order to give keyboard focus to the widget.  Please note that editing
12656  * can only happen when the widget is realized.
12657  *
12658  * If @path is invalid for @model, the current cursor (if any) will be unset
12659  * and the function will return without failing.
12660  **/
12661 void
12662 gtk_tree_view_set_cursor (GtkTreeView       *tree_view,
12663                           GtkTreePath       *path,
12664                           GtkTreeViewColumn *focus_column,
12665                           gboolean           start_editing)
12666 {
12667   gtk_tree_view_set_cursor_on_cell (tree_view, path, focus_column,
12668                                     NULL, start_editing);
12669 }
12670
12671 /**
12672  * gtk_tree_view_set_cursor_on_cell:
12673  * @tree_view: A #GtkTreeView
12674  * @path: A #GtkTreePath
12675  * @focus_column: (allow-none): A #GtkTreeViewColumn, or %NULL
12676  * @focus_cell: (allow-none): A #GtkCellRenderer, or %NULL
12677  * @start_editing: %TRUE if the specified cell should start being edited.
12678  *
12679  * Sets the current keyboard focus to be at @path, and selects it.  This is
12680  * useful when you want to focus the user's attention on a particular row.  If
12681  * @focus_column is not %NULL, then focus is given to the column specified by
12682  * it. If @focus_column and @focus_cell are not %NULL, and @focus_column
12683  * contains 2 or more editable or activatable cells, then focus is given to
12684  * the cell specified by @focus_cell. Additionally, if @focus_column is
12685  * specified, and @start_editing is %TRUE, then editing should be started in
12686  * the specified cell.  This function is often followed by
12687  * @gtk_widget_grab_focus (@tree_view) in order to give keyboard focus to the
12688  * widget.  Please note that editing can only happen when the widget is
12689  * realized.
12690  *
12691  * If @path is invalid for @model, the current cursor (if any) will be unset
12692  * and the function will return without failing.
12693  *
12694  * Since: 2.2
12695  **/
12696 void
12697 gtk_tree_view_set_cursor_on_cell (GtkTreeView       *tree_view,
12698                                   GtkTreePath       *path,
12699                                   GtkTreeViewColumn *focus_column,
12700                                   GtkCellRenderer   *focus_cell,
12701                                   gboolean           start_editing)
12702 {
12703   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
12704   g_return_if_fail (path != NULL);
12705   g_return_if_fail (focus_column == NULL || GTK_IS_TREE_VIEW_COLUMN (focus_column));
12706
12707   if (!tree_view->priv->model)
12708     return;
12709
12710   if (focus_cell)
12711     {
12712       g_return_if_fail (focus_column);
12713       g_return_if_fail (GTK_IS_CELL_RENDERER (focus_cell));
12714     }
12715
12716   /* cancel the current editing, if it exists */
12717   if (tree_view->priv->edited_column &&
12718       tree_view->priv->edited_column->editable_widget)
12719     gtk_tree_view_stop_editing (tree_view, TRUE);
12720
12721   gtk_tree_view_real_set_cursor (tree_view, path, TRUE, TRUE);
12722
12723   if (focus_column && focus_column->visible)
12724     {
12725       GList *list;
12726       gboolean column_in_tree = FALSE;
12727
12728       for (list = tree_view->priv->columns; list; list = list->next)
12729         if (list->data == focus_column)
12730           {
12731             column_in_tree = TRUE;
12732             break;
12733           }
12734       g_return_if_fail (column_in_tree);
12735       tree_view->priv->focus_column = focus_column;
12736       if (focus_cell)
12737         gtk_tree_view_column_focus_cell (focus_column, focus_cell);
12738       if (start_editing)
12739         gtk_tree_view_start_editing (tree_view, path);
12740     }
12741 }
12742
12743 /**
12744  * gtk_tree_view_get_bin_window:
12745  * @tree_view: A #GtkTreeView
12746  *
12747  * Returns the window that @tree_view renders to.
12748  * This is used primarily to compare to <literal>event->window</literal>
12749  * to confirm that the event on @tree_view is on the right window.
12750  *
12751  * Return value: (transfer none): A #GdkWindow, or %NULL when @tree_view
12752  *     hasn't been realized yet
12753  **/
12754 GdkWindow *
12755 gtk_tree_view_get_bin_window (GtkTreeView *tree_view)
12756 {
12757   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), NULL);
12758
12759   return tree_view->priv->bin_window;
12760 }
12761
12762 /**
12763  * gtk_tree_view_get_path_at_pos:
12764  * @tree_view: A #GtkTreeView.
12765  * @x: The x position to be identified (relative to bin_window).
12766  * @y: The y position to be identified (relative to bin_window).
12767  * @path: (out) (allow-none): A pointer to a #GtkTreePath pointer to be filled in, or %NULL
12768  * @column: (out) (allow-none): A pointer to a #GtkTreeViewColumn pointer to be filled in, or %NULL
12769  * @cell_x: (out) (allow-none): A pointer where the X coordinate relative to the cell can be placed, or %NULL
12770  * @cell_y: (out) (allow-none): A pointer where the Y coordinate relative to the cell can be placed, or %NULL
12771  *
12772  * Finds the path at the point (@x, @y), relative to bin_window coordinates
12773  * (please see gtk_tree_view_get_bin_window()).
12774  * That is, @x and @y are relative to an events coordinates. @x and @y must
12775  * come from an event on the @tree_view only where <literal>event->window ==
12776  * gtk_tree_view_get_bin_window (<!-- -->)</literal>. It is primarily for
12777  * things like popup menus. If @path is non-%NULL, then it will be filled
12778  * with the #GtkTreePath at that point.  This path should be freed with
12779  * gtk_tree_path_free().  If @column is non-%NULL, then it will be filled
12780  * with the column at that point.  @cell_x and @cell_y return the coordinates
12781  * relative to the cell background (i.e. the @background_area passed to
12782  * gtk_cell_renderer_render()).  This function is only meaningful if
12783  * @tree_view is realized.  Therefore this function will always return %FALSE
12784  * if @tree_view is not realized or does not have a model.
12785  *
12786  * For converting widget coordinates (eg. the ones you get from
12787  * GtkWidget::query-tooltip), please see
12788  * gtk_tree_view_convert_widget_to_bin_window_coords().
12789  *
12790  * Return value: %TRUE if a row exists at that coordinate.
12791  **/
12792 gboolean
12793 gtk_tree_view_get_path_at_pos (GtkTreeView        *tree_view,
12794                                gint                x,
12795                                gint                y,
12796                                GtkTreePath       **path,
12797                                GtkTreeViewColumn **column,
12798                                gint               *cell_x,
12799                                gint               *cell_y)
12800 {
12801   GtkRBTree *tree;
12802   GtkRBNode *node;
12803   gint y_offset;
12804
12805   g_return_val_if_fail (tree_view != NULL, FALSE);
12806
12807   if (path)
12808     *path = NULL;
12809   if (column)
12810     *column = NULL;
12811
12812   if (tree_view->priv->bin_window == NULL)
12813     return FALSE;
12814
12815   if (tree_view->priv->tree == NULL)
12816     return FALSE;
12817
12818   if (x > tree_view->priv->hadjustment->upper)
12819     return FALSE;
12820
12821   if (x < 0 || y < 0)
12822     return FALSE;
12823
12824   if (column || cell_x)
12825     {
12826       GtkTreeViewColumn *tmp_column;
12827       GtkTreeViewColumn *last_column = NULL;
12828       GList *list;
12829       gint remaining_x = x;
12830       gboolean found = FALSE;
12831       gboolean rtl;
12832
12833       rtl = (gtk_widget_get_direction (GTK_WIDGET (tree_view)) == GTK_TEXT_DIR_RTL);
12834       for (list = (rtl ? g_list_last (tree_view->priv->columns) : g_list_first (tree_view->priv->columns));
12835            list;
12836            list = (rtl ? list->prev : list->next))
12837         {
12838           tmp_column = list->data;
12839
12840           if (tmp_column->visible == FALSE)
12841             continue;
12842
12843           last_column = tmp_column;
12844           if (remaining_x <= tmp_column->width)
12845             {
12846               found = TRUE;
12847
12848               if (column)
12849                 *column = tmp_column;
12850
12851               if (cell_x)
12852                 *cell_x = remaining_x;
12853
12854               break;
12855             }
12856           remaining_x -= tmp_column->width;
12857         }
12858
12859       /* If found is FALSE and there is a last_column, then it the remainder
12860        * space is in that area
12861        */
12862       if (!found)
12863         {
12864           if (last_column)
12865             {
12866               if (column)
12867                 *column = last_column;
12868
12869               if (cell_x)
12870                 *cell_x = last_column->width + remaining_x;
12871             }
12872           else
12873             {
12874               return FALSE;
12875             }
12876         }
12877     }
12878
12879   y_offset = _gtk_rbtree_find_offset (tree_view->priv->tree,
12880                                       TREE_WINDOW_Y_TO_RBTREE_Y (tree_view, y),
12881                                       &tree, &node);
12882
12883   if (tree == NULL)
12884     return FALSE;
12885
12886   if (cell_y)
12887     *cell_y = y_offset;
12888
12889   if (path)
12890     *path = _gtk_tree_view_find_path (tree_view, tree, node);
12891
12892   return TRUE;
12893 }
12894
12895
12896 /**
12897  * gtk_tree_view_get_cell_area:
12898  * @tree_view: a #GtkTreeView
12899  * @path: (allow-none): a #GtkTreePath for the row, or %NULL to get only horizontal coordinates
12900  * @column: (allow-none): a #GtkTreeViewColumn for the column, or %NULL to get only vertical coordinates
12901  * @rect: rectangle to fill with cell rect
12902  *
12903  * Fills the bounding rectangle in bin_window coordinates for the cell at the
12904  * row specified by @path and the column specified by @column.  If @path is
12905  * %NULL, or points to a path not currently displayed, the @y and @height fields
12906  * of the rectangle will be filled with 0. If @column is %NULL, the @x and @width
12907  * fields will be filled with 0.  The sum of all cell rects does not cover the
12908  * entire tree; there are extra pixels in between rows, for example. The
12909  * returned rectangle is equivalent to the @cell_area passed to
12910  * gtk_cell_renderer_render().  This function is only valid if @tree_view is
12911  * realized.
12912  **/
12913 void
12914 gtk_tree_view_get_cell_area (GtkTreeView        *tree_view,
12915                              GtkTreePath        *path,
12916                              GtkTreeViewColumn  *column,
12917                              GdkRectangle       *rect)
12918 {
12919   GtkAllocation allocation;
12920   GtkRBTree *tree = NULL;
12921   GtkRBNode *node = NULL;
12922   gint vertical_separator;
12923   gint horizontal_separator;
12924
12925   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
12926   g_return_if_fail (column == NULL || GTK_IS_TREE_VIEW_COLUMN (column));
12927   g_return_if_fail (rect != NULL);
12928   g_return_if_fail (!column || column->tree_view == (GtkWidget *) tree_view);
12929   g_return_if_fail (gtk_widget_get_realized (GTK_WIDGET (tree_view)));
12930
12931   gtk_widget_style_get (GTK_WIDGET (tree_view),
12932                         "vertical-separator", &vertical_separator,
12933                         "horizontal-separator", &horizontal_separator,
12934                         NULL);
12935
12936   rect->x = 0;
12937   rect->y = 0;
12938   rect->width = 0;
12939   rect->height = 0;
12940
12941   if (column)
12942     {
12943       gtk_widget_get_allocation (column->button, &allocation);
12944       rect->x = allocation.x + horizontal_separator/2;
12945       rect->width = allocation.width - horizontal_separator;
12946     }
12947
12948   if (path)
12949     {
12950       gboolean ret = _gtk_tree_view_find_node (tree_view, path, &tree, &node);
12951
12952       /* Get vertical coords */
12953       if ((!ret && tree == NULL) || ret)
12954         return;
12955
12956       rect->y = CELL_FIRST_PIXEL (tree_view, tree, node, vertical_separator);
12957       rect->height = MAX (CELL_HEIGHT (node, vertical_separator), tree_view->priv->expander_size - vertical_separator);
12958
12959       if (column &&
12960           gtk_tree_view_is_expander_column (tree_view, column))
12961         {
12962           gint depth = gtk_tree_path_get_depth (path);
12963           gboolean rtl;
12964
12965           rtl = gtk_widget_get_direction (GTK_WIDGET (tree_view)) == GTK_TEXT_DIR_RTL;
12966
12967           if (!rtl)
12968             rect->x += (depth - 1) * tree_view->priv->level_indentation;
12969           rect->width -= (depth - 1) * tree_view->priv->level_indentation;
12970
12971           if (TREE_VIEW_DRAW_EXPANDERS (tree_view))
12972             {
12973               if (!rtl)
12974                 rect->x += depth * tree_view->priv->expander_size;
12975               rect->width -= depth * tree_view->priv->expander_size;
12976             }
12977
12978           rect->width = MAX (rect->width, 0);
12979         }
12980     }
12981 }
12982
12983 /**
12984  * gtk_tree_view_get_background_area:
12985  * @tree_view: a #GtkTreeView
12986  * @path: (allow-none): a #GtkTreePath for the row, or %NULL to get only horizontal coordinates
12987  * @column: (allow-none): a #GtkTreeViewColumn for the column, or %NULL to get only vertical coordiantes
12988  * @rect: rectangle to fill with cell background rect
12989  *
12990  * Fills the bounding rectangle in bin_window coordinates for the cell at the
12991  * row specified by @path and the column specified by @column.  If @path is
12992  * %NULL, or points to a node not found in the tree, the @y and @height fields of
12993  * the rectangle will be filled with 0. If @column is %NULL, the @x and @width
12994  * fields will be filled with 0.  The returned rectangle is equivalent to the
12995  * @background_area passed to gtk_cell_renderer_render().  These background
12996  * areas tile to cover the entire bin window.  Contrast with the @cell_area,
12997  * returned by gtk_tree_view_get_cell_area(), which returns only the cell
12998  * itself, excluding surrounding borders and the tree expander area.
12999  *
13000  **/
13001 void
13002 gtk_tree_view_get_background_area (GtkTreeView        *tree_view,
13003                                    GtkTreePath        *path,
13004                                    GtkTreeViewColumn  *column,
13005                                    GdkRectangle       *rect)
13006 {
13007   GtkRBTree *tree = NULL;
13008   GtkRBNode *node = NULL;
13009
13010   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
13011   g_return_if_fail (column == NULL || GTK_IS_TREE_VIEW_COLUMN (column));
13012   g_return_if_fail (rect != NULL);
13013
13014   rect->x = 0;
13015   rect->y = 0;
13016   rect->width = 0;
13017   rect->height = 0;
13018
13019   if (path)
13020     {
13021       /* Get vertical coords */
13022
13023       if (!_gtk_tree_view_find_node (tree_view, path, &tree, &node) &&
13024           tree == NULL)
13025         return;
13026
13027       rect->y = BACKGROUND_FIRST_PIXEL (tree_view, tree, node);
13028
13029       rect->height = ROW_HEIGHT (tree_view, BACKGROUND_HEIGHT (node));
13030     }
13031
13032   if (column)
13033     {
13034       gint x2 = 0;
13035
13036       gtk_tree_view_get_background_xrange (tree_view, tree, column, &rect->x, &x2);
13037       rect->width = x2 - rect->x;
13038     }
13039 }
13040
13041 /**
13042  * gtk_tree_view_get_visible_rect:
13043  * @tree_view: a #GtkTreeView
13044  * @visible_rect: rectangle to fill
13045  *
13046  * Fills @visible_rect with the currently-visible region of the
13047  * buffer, in tree coordinates. Convert to bin_window coordinates with
13048  * gtk_tree_view_convert_tree_to_bin_window_coords().
13049  * Tree coordinates start at 0,0 for row 0 of the tree, and cover the entire
13050  * scrollable area of the tree.
13051  **/
13052 void
13053 gtk_tree_view_get_visible_rect (GtkTreeView  *tree_view,
13054                                 GdkRectangle *visible_rect)
13055 {
13056   GtkAllocation allocation;
13057   GtkWidget *widget;
13058
13059   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
13060
13061   widget = GTK_WIDGET (tree_view);
13062
13063   if (visible_rect)
13064     {
13065       gtk_widget_get_allocation (widget, &allocation);
13066       visible_rect->x = tree_view->priv->hadjustment->value;
13067       visible_rect->y = tree_view->priv->vadjustment->value;
13068       visible_rect->width = allocation.width;
13069       visible_rect->height = allocation.height - TREE_VIEW_HEADER_HEIGHT (tree_view);
13070     }
13071 }
13072
13073 /**
13074  * gtk_tree_view_convert_widget_to_tree_coords:
13075  * @tree_view: a #GtkTreeView
13076  * @wx: X coordinate relative to the widget
13077  * @wy: Y coordinate relative to the widget
13078  * @tx: return location for tree X coordinate
13079  * @ty: return location for tree Y coordinate
13080  *
13081  * Converts widget coordinates to coordinates for the
13082  * tree (the full scrollable area of the tree).
13083  *
13084  * Since: 2.12
13085  **/
13086 void
13087 gtk_tree_view_convert_widget_to_tree_coords (GtkTreeView *tree_view,
13088                                              gint         wx,
13089                                              gint         wy,
13090                                              gint        *tx,
13091                                              gint        *ty)
13092 {
13093   gint x, y;
13094
13095   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
13096
13097   gtk_tree_view_convert_widget_to_bin_window_coords (tree_view,
13098                                                      wx, wy,
13099                                                      &x, &y);
13100   gtk_tree_view_convert_bin_window_to_tree_coords (tree_view,
13101                                                    x, y,
13102                                                    tx, ty);
13103 }
13104
13105 /**
13106  * gtk_tree_view_convert_tree_to_widget_coords:
13107  * @tree_view: a #GtkTreeView
13108  * @tx: X coordinate relative to the tree
13109  * @ty: Y coordinate relative to the tree
13110  * @wx: return location for widget X coordinate
13111  * @wy: return location for widget Y coordinate
13112  *
13113  * Converts tree coordinates (coordinates in full scrollable area of the tree)
13114  * to widget coordinates.
13115  *
13116  * Since: 2.12
13117  **/
13118 void
13119 gtk_tree_view_convert_tree_to_widget_coords (GtkTreeView *tree_view,
13120                                              gint         tx,
13121                                              gint         ty,
13122                                              gint        *wx,
13123                                              gint        *wy)
13124 {
13125   gint x, y;
13126
13127   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
13128
13129   gtk_tree_view_convert_tree_to_bin_window_coords (tree_view,
13130                                                    tx, ty,
13131                                                    &x, &y);
13132   gtk_tree_view_convert_bin_window_to_widget_coords (tree_view,
13133                                                      x, y,
13134                                                      wx, wy);
13135 }
13136
13137 /**
13138  * gtk_tree_view_convert_widget_to_bin_window_coords:
13139  * @tree_view: a #GtkTreeView
13140  * @wx: X coordinate relative to the widget
13141  * @wy: Y coordinate relative to the widget
13142  * @bx: return location for bin_window X coordinate
13143  * @by: return location for bin_window Y coordinate
13144  *
13145  * Converts widget coordinates to coordinates for the bin_window
13146  * (see gtk_tree_view_get_bin_window()).
13147  *
13148  * Since: 2.12
13149  **/
13150 void
13151 gtk_tree_view_convert_widget_to_bin_window_coords (GtkTreeView *tree_view,
13152                                                    gint         wx,
13153                                                    gint         wy,
13154                                                    gint        *bx,
13155                                                    gint        *by)
13156 {
13157   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
13158
13159   if (bx)
13160     *bx = wx + tree_view->priv->hadjustment->value;
13161   if (by)
13162     *by = wy - TREE_VIEW_HEADER_HEIGHT (tree_view);
13163 }
13164
13165 /**
13166  * gtk_tree_view_convert_bin_window_to_widget_coords:
13167  * @tree_view: a #GtkTreeView
13168  * @bx: bin_window X coordinate
13169  * @by: bin_window Y coordinate
13170  * @wx: return location for widget X coordinate
13171  * @wy: return location for widget Y coordinate
13172  *
13173  * Converts bin_window coordinates (see gtk_tree_view_get_bin_window())
13174  * to widget relative coordinates.
13175  *
13176  * Since: 2.12
13177  **/
13178 void
13179 gtk_tree_view_convert_bin_window_to_widget_coords (GtkTreeView *tree_view,
13180                                                    gint         bx,
13181                                                    gint         by,
13182                                                    gint        *wx,
13183                                                    gint        *wy)
13184 {
13185   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
13186
13187   if (wx)
13188     *wx = bx - tree_view->priv->hadjustment->value;
13189   if (wy)
13190     *wy = by + TREE_VIEW_HEADER_HEIGHT (tree_view);
13191 }
13192
13193 /**
13194  * gtk_tree_view_convert_tree_to_bin_window_coords:
13195  * @tree_view: a #GtkTreeView
13196  * @tx: tree X coordinate
13197  * @ty: tree Y coordinate
13198  * @bx: return location for X coordinate relative to bin_window
13199  * @by: return location for Y coordinate relative to bin_window
13200  *
13201  * Converts tree coordinates (coordinates in full scrollable area of the tree)
13202  * to bin_window coordinates.
13203  *
13204  * Since: 2.12
13205  **/
13206 void
13207 gtk_tree_view_convert_tree_to_bin_window_coords (GtkTreeView *tree_view,
13208                                                  gint         tx,
13209                                                  gint         ty,
13210                                                  gint        *bx,
13211                                                  gint        *by)
13212 {
13213   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
13214
13215   if (bx)
13216     *bx = tx;
13217   if (by)
13218     *by = ty - tree_view->priv->dy;
13219 }
13220
13221 /**
13222  * gtk_tree_view_convert_bin_window_to_tree_coords:
13223  * @tree_view: a #GtkTreeView
13224  * @bx: X coordinate relative to bin_window
13225  * @by: Y coordinate relative to bin_window
13226  * @tx: return location for tree X coordinate
13227  * @ty: return location for tree Y coordinate
13228  *
13229  * Converts bin_window coordinates to coordinates for the
13230  * tree (the full scrollable area of the tree).
13231  *
13232  * Since: 2.12
13233  **/
13234 void
13235 gtk_tree_view_convert_bin_window_to_tree_coords (GtkTreeView *tree_view,
13236                                                  gint         bx,
13237                                                  gint         by,
13238                                                  gint        *tx,
13239                                                  gint        *ty)
13240 {
13241   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
13242
13243   if (tx)
13244     *tx = bx;
13245   if (ty)
13246     *ty = by + tree_view->priv->dy;
13247 }
13248
13249
13250
13251 /**
13252  * gtk_tree_view_get_visible_range:
13253  * @tree_view: A #GtkTreeView
13254  * @start_path: (allow-none): Return location for start of region, or %NULL.
13255  * @end_path: (allow-none): Return location for end of region, or %NULL.
13256  *
13257  * Sets @start_path and @end_path to be the first and last visible path.
13258  * Note that there may be invisible paths in between.
13259  *
13260  * The paths should be freed with gtk_tree_path_free() after use.
13261  *
13262  * Returns: %TRUE, if valid paths were placed in @start_path and @end_path.
13263  *
13264  * Since: 2.8
13265  **/
13266 gboolean
13267 gtk_tree_view_get_visible_range (GtkTreeView  *tree_view,
13268                                  GtkTreePath **start_path,
13269                                  GtkTreePath **end_path)
13270 {
13271   GtkRBTree *tree;
13272   GtkRBNode *node;
13273   gboolean retval;
13274
13275   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), FALSE);
13276
13277   if (!tree_view->priv->tree)
13278     return FALSE;
13279
13280   retval = TRUE;
13281
13282   if (start_path)
13283     {
13284       _gtk_rbtree_find_offset (tree_view->priv->tree,
13285                                TREE_WINDOW_Y_TO_RBTREE_Y (tree_view, 0),
13286                                &tree, &node);
13287       if (node)
13288         *start_path = _gtk_tree_view_find_path (tree_view, tree, node);
13289       else
13290         retval = FALSE;
13291     }
13292
13293   if (end_path)
13294     {
13295       gint y;
13296
13297       if (tree_view->priv->height < tree_view->priv->vadjustment->page_size)
13298         y = tree_view->priv->height - 1;
13299       else
13300         y = TREE_WINDOW_Y_TO_RBTREE_Y (tree_view, tree_view->priv->vadjustment->page_size) - 1;
13301
13302       _gtk_rbtree_find_offset (tree_view->priv->tree, y, &tree, &node);
13303       if (node)
13304         *end_path = _gtk_tree_view_find_path (tree_view, tree, node);
13305       else
13306         retval = FALSE;
13307     }
13308
13309   return retval;
13310 }
13311
13312 static void
13313 unset_reorderable (GtkTreeView *tree_view)
13314 {
13315   if (tree_view->priv->reorderable)
13316     {
13317       tree_view->priv->reorderable = FALSE;
13318       g_object_notify (G_OBJECT (tree_view), "reorderable");
13319     }
13320 }
13321
13322 /**
13323  * gtk_tree_view_enable_model_drag_source:
13324  * @tree_view: a #GtkTreeView
13325  * @start_button_mask: Mask of allowed buttons to start drag
13326  * @targets: the table of targets that the drag will support
13327  * @n_targets: the number of items in @targets
13328  * @actions: the bitmask of possible actions for a drag from this
13329  *    widget
13330  *
13331  * Turns @tree_view into a drag source for automatic DND. Calling this
13332  * method sets #GtkTreeView:reorderable to %FALSE.
13333  **/
13334 void
13335 gtk_tree_view_enable_model_drag_source (GtkTreeView              *tree_view,
13336                                         GdkModifierType           start_button_mask,
13337                                         const GtkTargetEntry     *targets,
13338                                         gint                      n_targets,
13339                                         GdkDragAction             actions)
13340 {
13341   TreeViewDragInfo *di;
13342
13343   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
13344
13345   gtk_drag_source_set (GTK_WIDGET (tree_view),
13346                        0,
13347                        targets,
13348                        n_targets,
13349                        actions);
13350
13351   di = ensure_info (tree_view);
13352
13353   di->start_button_mask = start_button_mask;
13354   di->source_actions = actions;
13355   di->source_set = TRUE;
13356
13357   unset_reorderable (tree_view);
13358 }
13359
13360 /**
13361  * gtk_tree_view_enable_model_drag_dest:
13362  * @tree_view: a #GtkTreeView
13363  * @targets: the table of targets that the drag will support
13364  * @n_targets: the number of items in @targets
13365  * @actions: the bitmask of possible actions for a drag from this
13366  *    widget
13367  *
13368  * Turns @tree_view into a drop destination for automatic DND. Calling
13369  * this method sets #GtkTreeView:reorderable to %FALSE.
13370  **/
13371 void
13372 gtk_tree_view_enable_model_drag_dest (GtkTreeView              *tree_view,
13373                                       const GtkTargetEntry     *targets,
13374                                       gint                      n_targets,
13375                                       GdkDragAction             actions)
13376 {
13377   TreeViewDragInfo *di;
13378
13379   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
13380
13381   gtk_drag_dest_set (GTK_WIDGET (tree_view),
13382                      0,
13383                      targets,
13384                      n_targets,
13385                      actions);
13386
13387   di = ensure_info (tree_view);
13388   di->dest_set = TRUE;
13389
13390   unset_reorderable (tree_view);
13391 }
13392
13393 /**
13394  * gtk_tree_view_unset_rows_drag_source:
13395  * @tree_view: a #GtkTreeView
13396  *
13397  * Undoes the effect of
13398  * gtk_tree_view_enable_model_drag_source(). Calling this method sets
13399  * #GtkTreeView:reorderable to %FALSE.
13400  **/
13401 void
13402 gtk_tree_view_unset_rows_drag_source (GtkTreeView *tree_view)
13403 {
13404   TreeViewDragInfo *di;
13405
13406   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
13407
13408   di = get_info (tree_view);
13409
13410   if (di)
13411     {
13412       if (di->source_set)
13413         {
13414           gtk_drag_source_unset (GTK_WIDGET (tree_view));
13415           di->source_set = FALSE;
13416         }
13417
13418       if (!di->dest_set && !di->source_set)
13419         remove_info (tree_view);
13420     }
13421
13422   unset_reorderable (tree_view);
13423 }
13424
13425 /**
13426  * gtk_tree_view_unset_rows_drag_dest:
13427  * @tree_view: a #GtkTreeView
13428  *
13429  * Undoes the effect of
13430  * gtk_tree_view_enable_model_drag_dest(). Calling this method sets
13431  * #GtkTreeView:reorderable to %FALSE.
13432  **/
13433 void
13434 gtk_tree_view_unset_rows_drag_dest (GtkTreeView *tree_view)
13435 {
13436   TreeViewDragInfo *di;
13437
13438   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
13439
13440   di = get_info (tree_view);
13441
13442   if (di)
13443     {
13444       if (di->dest_set)
13445         {
13446           gtk_drag_dest_unset (GTK_WIDGET (tree_view));
13447           di->dest_set = FALSE;
13448         }
13449
13450       if (!di->dest_set && !di->source_set)
13451         remove_info (tree_view);
13452     }
13453
13454   unset_reorderable (tree_view);
13455 }
13456
13457 /**
13458  * gtk_tree_view_set_drag_dest_row:
13459  * @tree_view: a #GtkTreeView
13460  * @path: (allow-none): The path of the row to highlight, or %NULL.
13461  * @pos: Specifies whether to drop before, after or into the row
13462  *
13463  * Sets the row that is highlighted for feedback.
13464  **/
13465 void
13466 gtk_tree_view_set_drag_dest_row (GtkTreeView            *tree_view,
13467                                  GtkTreePath            *path,
13468                                  GtkTreeViewDropPosition pos)
13469 {
13470   GtkTreePath *current_dest;
13471
13472   /* Note; this function is exported to allow a custom DND
13473    * implementation, so it can't touch TreeViewDragInfo
13474    */
13475
13476   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
13477
13478   current_dest = NULL;
13479
13480   if (tree_view->priv->drag_dest_row)
13481     {
13482       current_dest = gtk_tree_row_reference_get_path (tree_view->priv->drag_dest_row);
13483       gtk_tree_row_reference_free (tree_view->priv->drag_dest_row);
13484     }
13485
13486   /* special case a drop on an empty model */
13487   tree_view->priv->empty_view_drop = 0;
13488
13489   if (pos == GTK_TREE_VIEW_DROP_BEFORE && path
13490       && gtk_tree_path_get_depth (path) == 1
13491       && gtk_tree_path_get_indices (path)[0] == 0)
13492     {
13493       gint n_children;
13494
13495       n_children = gtk_tree_model_iter_n_children (tree_view->priv->model,
13496                                                    NULL);
13497
13498       if (!n_children)
13499         tree_view->priv->empty_view_drop = 1;
13500     }
13501
13502   tree_view->priv->drag_dest_pos = pos;
13503
13504   if (path)
13505     {
13506       tree_view->priv->drag_dest_row =
13507         gtk_tree_row_reference_new_proxy (G_OBJECT (tree_view), tree_view->priv->model, path);
13508       gtk_tree_view_queue_draw_path (tree_view, path, NULL);
13509     }
13510   else
13511     tree_view->priv->drag_dest_row = NULL;
13512
13513   if (current_dest)
13514     {
13515       GtkRBTree *tree, *new_tree;
13516       GtkRBNode *node, *new_node;
13517
13518       _gtk_tree_view_find_node (tree_view, current_dest, &tree, &node);
13519       _gtk_tree_view_queue_draw_node (tree_view, tree, node, NULL);
13520
13521       if (tree && node)
13522         {
13523           _gtk_rbtree_next_full (tree, node, &new_tree, &new_node);
13524           if (new_tree && new_node)
13525             _gtk_tree_view_queue_draw_node (tree_view, new_tree, new_node, NULL);
13526
13527           _gtk_rbtree_prev_full (tree, node, &new_tree, &new_node);
13528           if (new_tree && new_node)
13529             _gtk_tree_view_queue_draw_node (tree_view, new_tree, new_node, NULL);
13530         }
13531       gtk_tree_path_free (current_dest);
13532     }
13533 }
13534
13535 /**
13536  * gtk_tree_view_get_drag_dest_row:
13537  * @tree_view: a #GtkTreeView
13538  * @path: (out) (allow-none): Return location for the path of the highlighted row, or %NULL.
13539  * @pos: (out) (allow-none): Return location for the drop position, or %NULL
13540  *
13541  * Gets information about the row that is highlighted for feedback.
13542  **/
13543 void
13544 gtk_tree_view_get_drag_dest_row (GtkTreeView              *tree_view,
13545                                  GtkTreePath             **path,
13546                                  GtkTreeViewDropPosition  *pos)
13547 {
13548   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
13549
13550   if (path)
13551     {
13552       if (tree_view->priv->drag_dest_row)
13553         *path = gtk_tree_row_reference_get_path (tree_view->priv->drag_dest_row);
13554       else
13555         {
13556           if (tree_view->priv->empty_view_drop)
13557             *path = gtk_tree_path_new_from_indices (0, -1);
13558           else
13559             *path = NULL;
13560         }
13561     }
13562
13563   if (pos)
13564     *pos = tree_view->priv->drag_dest_pos;
13565 }
13566
13567 /**
13568  * gtk_tree_view_get_dest_row_at_pos:
13569  * @tree_view: a #GtkTreeView
13570  * @drag_x: the position to determine the destination row for
13571  * @drag_y: the position to determine the destination row for
13572  * @path: (out) (allow-none): Return location for the path of the highlighted row, or %NULL.
13573  * @pos: (out) (allow-none): Return location for the drop position, or %NULL
13574  *
13575  * Determines the destination row for a given position.  @drag_x and
13576  * @drag_y are expected to be in widget coordinates.  This function is only
13577  * meaningful if @tree_view is realized.  Therefore this function will always
13578  * return %FALSE if @tree_view is not realized or does not have a model.
13579  *
13580  * Return value: whether there is a row at the given position, %TRUE if this
13581  * is indeed the case.
13582  **/
13583 gboolean
13584 gtk_tree_view_get_dest_row_at_pos (GtkTreeView             *tree_view,
13585                                    gint                     drag_x,
13586                                    gint                     drag_y,
13587                                    GtkTreePath            **path,
13588                                    GtkTreeViewDropPosition *pos)
13589 {
13590   gint cell_y;
13591   gint bin_x, bin_y;
13592   gdouble offset_into_row;
13593   gdouble third;
13594   GdkRectangle cell;
13595   GtkTreeViewColumn *column = NULL;
13596   GtkTreePath *tmp_path = NULL;
13597
13598   /* Note; this function is exported to allow a custom DND
13599    * implementation, so it can't touch TreeViewDragInfo
13600    */
13601
13602   g_return_val_if_fail (tree_view != NULL, FALSE);
13603   g_return_val_if_fail (drag_x >= 0, FALSE);
13604   g_return_val_if_fail (drag_y >= 0, FALSE);
13605
13606   if (path)
13607     *path = NULL;
13608
13609   if (tree_view->priv->bin_window == NULL)
13610     return FALSE;
13611
13612   if (tree_view->priv->tree == NULL)
13613     return FALSE;
13614
13615   /* If in the top third of a row, we drop before that row; if
13616    * in the bottom third, drop after that row; if in the middle,
13617    * and the row has children, drop into the row.
13618    */
13619   gtk_tree_view_convert_widget_to_bin_window_coords (tree_view, drag_x, drag_y,
13620                                                      &bin_x, &bin_y);
13621
13622   if (!gtk_tree_view_get_path_at_pos (tree_view,
13623                                       bin_x,
13624                                       bin_y,
13625                                       &tmp_path,
13626                                       &column,
13627                                       NULL,
13628                                       &cell_y))
13629     return FALSE;
13630
13631   gtk_tree_view_get_background_area (tree_view, tmp_path, column,
13632                                      &cell);
13633
13634   offset_into_row = cell_y;
13635
13636   if (path)
13637     *path = tmp_path;
13638   else
13639     gtk_tree_path_free (tmp_path);
13640
13641   tmp_path = NULL;
13642
13643   third = cell.height / 3.0;
13644
13645   if (pos)
13646     {
13647       if (offset_into_row < third)
13648         {
13649           *pos = GTK_TREE_VIEW_DROP_BEFORE;
13650         }
13651       else if (offset_into_row < (cell.height / 2.0))
13652         {
13653           *pos = GTK_TREE_VIEW_DROP_INTO_OR_BEFORE;
13654         }
13655       else if (offset_into_row < third * 2.0)
13656         {
13657           *pos = GTK_TREE_VIEW_DROP_INTO_OR_AFTER;
13658         }
13659       else
13660         {
13661           *pos = GTK_TREE_VIEW_DROP_AFTER;
13662         }
13663     }
13664
13665   return TRUE;
13666 }
13667
13668
13669
13670 /* KEEP IN SYNC WITH GTK_TREE_VIEW_BIN_EXPOSE */
13671 /**
13672  * gtk_tree_view_create_row_drag_icon:
13673  * @tree_view: a #GtkTreeView
13674  * @path: a #GtkTreePath in @tree_view
13675  *
13676  * Creates a #cairo_surface_t representation of the row at @path.
13677  * This image is used for a drag icon.
13678  *
13679  * Return value: (transfer full): a newly-allocated surface of the drag icon.
13680  **/
13681 cairo_surface_t *
13682 gtk_tree_view_create_row_drag_icon (GtkTreeView  *tree_view,
13683                                     GtkTreePath  *path)
13684 {
13685   GtkTreeIter   iter;
13686   GtkRBTree    *tree;
13687   GtkRBNode    *node;
13688   GtkStyle *style;
13689   gint cell_offset;
13690   GList *list;
13691   GdkRectangle background_area;
13692   GtkWidget *widget;
13693   gint depth;
13694   /* start drawing inside the black outline */
13695   gint x = 1, y = 1;
13696   cairo_surface_t *surface;
13697   gint bin_window_width;
13698   gboolean is_separator = FALSE;
13699   gboolean rtl;
13700   cairo_t *cr;
13701
13702   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), NULL);
13703   g_return_val_if_fail (path != NULL, NULL);
13704
13705   widget = GTK_WIDGET (tree_view);
13706
13707   if (!gtk_widget_get_realized (widget))
13708     return NULL;
13709
13710   depth = gtk_tree_path_get_depth (path);
13711
13712   _gtk_tree_view_find_node (tree_view,
13713                             path,
13714                             &tree,
13715                             &node);
13716
13717   if (tree == NULL)
13718     return NULL;
13719
13720   if (!gtk_tree_model_get_iter (tree_view->priv->model,
13721                                 &iter,
13722                                 path))
13723     return NULL;
13724
13725   style = gtk_widget_get_style (widget);
13726
13727   is_separator = row_is_separator (tree_view, &iter, NULL);
13728
13729   cell_offset = x;
13730
13731   background_area.y = y;
13732   background_area.height = ROW_HEIGHT (tree_view, BACKGROUND_HEIGHT (node));
13733
13734   bin_window_width = gdk_window_get_width (tree_view->priv->bin_window);
13735
13736   surface = gdk_window_create_similar_surface (tree_view->priv->bin_window,
13737                                                CAIRO_CONTENT_COLOR,
13738                                                bin_window_width + 2,
13739                                                background_area.height + 2);
13740
13741   cr = cairo_create (surface);
13742   gdk_cairo_set_source_color (cr, &style->base [gtk_widget_get_state (widget)]);
13743   cairo_paint (cr);
13744
13745   rtl = gtk_widget_get_direction (GTK_WIDGET (tree_view)) == GTK_TEXT_DIR_RTL;
13746
13747   for (list = (rtl ? g_list_last (tree_view->priv->columns) : g_list_first (tree_view->priv->columns));
13748       list;
13749       list = (rtl ? list->prev : list->next))
13750     {
13751       GtkTreeViewColumn *column = list->data;
13752       GdkRectangle cell_area;
13753       gint vertical_separator;
13754
13755       if (!column->visible)
13756         continue;
13757
13758       gtk_tree_view_column_cell_set_cell_data (column, tree_view->priv->model, &iter,
13759                                                GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_PARENT),
13760                                                node->children?TRUE:FALSE);
13761
13762       background_area.x = cell_offset;
13763       background_area.width = column->width;
13764
13765       gtk_widget_style_get (widget,
13766                             "vertical-separator", &vertical_separator,
13767                             NULL);
13768
13769       cell_area = background_area;
13770
13771       cell_area.y += vertical_separator / 2;
13772       cell_area.height -= vertical_separator;
13773
13774       if (gtk_tree_view_is_expander_column (tree_view, column))
13775         {
13776           if (!rtl)
13777             cell_area.x += (depth - 1) * tree_view->priv->level_indentation;
13778           cell_area.width -= (depth - 1) * tree_view->priv->level_indentation;
13779
13780           if (TREE_VIEW_DRAW_EXPANDERS(tree_view))
13781             {
13782               if (!rtl)
13783                 cell_area.x += depth * tree_view->priv->expander_size;
13784               cell_area.width -= depth * tree_view->priv->expander_size;
13785             }
13786         }
13787
13788       if (gtk_tree_view_column_cell_is_visible (column))
13789         {
13790           if (is_separator)
13791             gtk_paint_hline (style,
13792                                    cr,
13793                                    GTK_STATE_NORMAL,
13794                                    widget,
13795                                    NULL,
13796                                    cell_area.x,
13797                                    cell_area.x + cell_area.width,
13798                                    cell_area.y + cell_area.height / 2);
13799           else
13800             _gtk_tree_view_column_cell_render (column,
13801                                                cr,
13802                                                &background_area,
13803                                                &cell_area,
13804                                                0);
13805         }
13806       cell_offset += column->width;
13807     }
13808
13809   cairo_set_source_rgb (cr, 0, 0, 0);
13810   cairo_rectangle (cr,
13811                    0.5, 0.5,
13812                    bin_window_width + 1,
13813                    background_area.height + 1);
13814   cairo_set_line_width (cr, 1.0);
13815   cairo_stroke (cr);
13816
13817   cairo_destroy (cr);
13818
13819   cairo_surface_set_device_offset (surface, 2, 2);
13820
13821   return surface;
13822 }
13823
13824
13825 /**
13826  * gtk_tree_view_set_destroy_count_func:
13827  * @tree_view: A #GtkTreeView
13828  * @func: (allow-none): Function to be called when a view row is destroyed, or %NULL
13829  * @data: (allow-none): User data to be passed to @func, or %NULL
13830  * @destroy: (allow-none): Destroy notifier for @data, or %NULL
13831  *
13832  * This function should almost never be used.  It is meant for private use by
13833  * ATK for determining the number of visible children that are removed when the
13834  * user collapses a row, or a row is deleted.
13835  **/
13836 void
13837 gtk_tree_view_set_destroy_count_func (GtkTreeView             *tree_view,
13838                                       GtkTreeDestroyCountFunc  func,
13839                                       gpointer                 data,
13840                                       GDestroyNotify           destroy)
13841 {
13842   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
13843
13844   if (tree_view->priv->destroy_count_destroy)
13845     tree_view->priv->destroy_count_destroy (tree_view->priv->destroy_count_data);
13846
13847   tree_view->priv->destroy_count_func = func;
13848   tree_view->priv->destroy_count_data = data;
13849   tree_view->priv->destroy_count_destroy = destroy;
13850 }
13851
13852
13853 /*
13854  * Interactive search
13855  */
13856
13857 /**
13858  * gtk_tree_view_set_enable_search:
13859  * @tree_view: A #GtkTreeView
13860  * @enable_search: %TRUE, if the user can search interactively
13861  *
13862  * If @enable_search is set, then the user can type in text to search through
13863  * the tree interactively (this is sometimes called "typeahead find").
13864  *
13865  * Note that even if this is %FALSE, the user can still initiate a search
13866  * using the "start-interactive-search" key binding.
13867  */
13868 void
13869 gtk_tree_view_set_enable_search (GtkTreeView *tree_view,
13870                                  gboolean     enable_search)
13871 {
13872   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
13873
13874   enable_search = !!enable_search;
13875
13876   if (tree_view->priv->enable_search != enable_search)
13877     {
13878        tree_view->priv->enable_search = enable_search;
13879        g_object_notify (G_OBJECT (tree_view), "enable-search");
13880     }
13881 }
13882
13883 /**
13884  * gtk_tree_view_get_enable_search:
13885  * @tree_view: A #GtkTreeView
13886  *
13887  * Returns whether or not the tree allows to start interactive searching
13888  * by typing in text.
13889  *
13890  * Return value: whether or not to let the user search interactively
13891  */
13892 gboolean
13893 gtk_tree_view_get_enable_search (GtkTreeView *tree_view)
13894 {
13895   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), FALSE);
13896
13897   return tree_view->priv->enable_search;
13898 }
13899
13900
13901 /**
13902  * gtk_tree_view_get_search_column:
13903  * @tree_view: A #GtkTreeView
13904  *
13905  * Gets the column searched on by the interactive search code.
13906  *
13907  * Return value: the column the interactive search code searches in.
13908  */
13909 gint
13910 gtk_tree_view_get_search_column (GtkTreeView *tree_view)
13911 {
13912   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), -1);
13913
13914   return (tree_view->priv->search_column);
13915 }
13916
13917 /**
13918  * gtk_tree_view_set_search_column:
13919  * @tree_view: A #GtkTreeView
13920  * @column: the column of the model to search in, or -1 to disable searching
13921  *
13922  * Sets @column as the column where the interactive search code should
13923  * search in for the current model.
13924  *
13925  * If the search column is set, users can use the "start-interactive-search"
13926  * key binding to bring up search popup. The enable-search property controls
13927  * whether simply typing text will also start an interactive search.
13928  *
13929  * Note that @column refers to a column of the current model. The search
13930  * column is reset to -1 when the model is changed.
13931  */
13932 void
13933 gtk_tree_view_set_search_column (GtkTreeView *tree_view,
13934                                  gint         column)
13935 {
13936   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
13937   g_return_if_fail (column >= -1);
13938
13939   if (tree_view->priv->search_column == column)
13940     return;
13941
13942   tree_view->priv->search_column = column;
13943   g_object_notify (G_OBJECT (tree_view), "search-column");
13944 }
13945
13946 /**
13947  * gtk_tree_view_get_search_equal_func:
13948  * @tree_view: A #GtkTreeView
13949  *
13950  * Returns the compare function currently in use.
13951  *
13952  * Return value: the currently used compare function for the search code.
13953  */
13954
13955 GtkTreeViewSearchEqualFunc
13956 gtk_tree_view_get_search_equal_func (GtkTreeView *tree_view)
13957 {
13958   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), NULL);
13959
13960   return tree_view->priv->search_equal_func;
13961 }
13962
13963 /**
13964  * gtk_tree_view_set_search_equal_func:
13965  * @tree_view: A #GtkTreeView
13966  * @search_equal_func: the compare function to use during the search
13967  * @search_user_data: (allow-none): user data to pass to @search_equal_func, or %NULL
13968  * @search_destroy: (allow-none): Destroy notifier for @search_user_data, or %NULL
13969  *
13970  * Sets the compare function for the interactive search capabilities; note
13971  * that somewhat like strcmp() returning 0 for equality
13972  * #GtkTreeViewSearchEqualFunc returns %FALSE on matches.
13973  **/
13974 void
13975 gtk_tree_view_set_search_equal_func (GtkTreeView                *tree_view,
13976                                      GtkTreeViewSearchEqualFunc  search_equal_func,
13977                                      gpointer                    search_user_data,
13978                                      GDestroyNotify              search_destroy)
13979 {
13980   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
13981   g_return_if_fail (search_equal_func != NULL);
13982
13983   if (tree_view->priv->search_destroy)
13984     tree_view->priv->search_destroy (tree_view->priv->search_user_data);
13985
13986   tree_view->priv->search_equal_func = search_equal_func;
13987   tree_view->priv->search_user_data = search_user_data;
13988   tree_view->priv->search_destroy = search_destroy;
13989   if (tree_view->priv->search_equal_func == NULL)
13990     tree_view->priv->search_equal_func = gtk_tree_view_search_equal_func;
13991 }
13992
13993 /**
13994  * gtk_tree_view_get_search_entry:
13995  * @tree_view: A #GtkTreeView
13996  *
13997  * Returns the #GtkEntry which is currently in use as interactive search
13998  * entry for @tree_view.  In case the built-in entry is being used, %NULL
13999  * will be returned.
14000  *
14001  * Return value: (transfer none): the entry currently in use as search entry.
14002  *
14003  * Since: 2.10
14004  */
14005 GtkEntry *
14006 gtk_tree_view_get_search_entry (GtkTreeView *tree_view)
14007 {
14008   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), NULL);
14009
14010   if (tree_view->priv->search_custom_entry_set)
14011     return GTK_ENTRY (tree_view->priv->search_entry);
14012
14013   return NULL;
14014 }
14015
14016 /**
14017  * gtk_tree_view_set_search_entry:
14018  * @tree_view: A #GtkTreeView
14019  * @entry: (allow-none): the entry the interactive search code of @tree_view should use or %NULL
14020  *
14021  * Sets the entry which the interactive search code will use for this
14022  * @tree_view.  This is useful when you want to provide a search entry
14023  * in our interface at all time at a fixed position.  Passing %NULL for
14024  * @entry will make the interactive search code use the built-in popup
14025  * entry again.
14026  *
14027  * Since: 2.10
14028  */
14029 void
14030 gtk_tree_view_set_search_entry (GtkTreeView *tree_view,
14031                                 GtkEntry    *entry)
14032 {
14033   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
14034   g_return_if_fail (entry == NULL || GTK_IS_ENTRY (entry));
14035
14036   if (tree_view->priv->search_custom_entry_set)
14037     {
14038       if (tree_view->priv->search_entry_changed_id)
14039         {
14040           g_signal_handler_disconnect (tree_view->priv->search_entry,
14041                                        tree_view->priv->search_entry_changed_id);
14042           tree_view->priv->search_entry_changed_id = 0;
14043         }
14044       g_signal_handlers_disconnect_by_func (tree_view->priv->search_entry,
14045                                             G_CALLBACK (gtk_tree_view_search_key_press_event),
14046                                             tree_view);
14047
14048       g_object_unref (tree_view->priv->search_entry);
14049     }
14050   else if (tree_view->priv->search_window)
14051     {
14052       gtk_widget_destroy (tree_view->priv->search_window);
14053
14054       tree_view->priv->search_window = NULL;
14055     }
14056
14057   if (entry)
14058     {
14059       tree_view->priv->search_entry = g_object_ref (entry);
14060       tree_view->priv->search_custom_entry_set = TRUE;
14061
14062       if (tree_view->priv->search_entry_changed_id == 0)
14063         {
14064           tree_view->priv->search_entry_changed_id =
14065             g_signal_connect (tree_view->priv->search_entry, "changed",
14066                               G_CALLBACK (gtk_tree_view_search_init),
14067                               tree_view);
14068         }
14069
14070         g_signal_connect (tree_view->priv->search_entry, "key-press-event",
14071                           G_CALLBACK (gtk_tree_view_search_key_press_event),
14072                           tree_view);
14073
14074         gtk_tree_view_search_init (tree_view->priv->search_entry, tree_view);
14075     }
14076   else
14077     {
14078       tree_view->priv->search_entry = NULL;
14079       tree_view->priv->search_custom_entry_set = FALSE;
14080     }
14081 }
14082
14083 /**
14084  * gtk_tree_view_set_search_position_func:
14085  * @tree_view: A #GtkTreeView
14086  * @func: (allow-none): the function to use to position the search dialog, or %NULL
14087  *    to use the default search position function
14088  * @data: (allow-none): user data to pass to @func, or %NULL
14089  * @destroy: (allow-none): Destroy notifier for @data, or %NULL
14090  *
14091  * Sets the function to use when positioning the search dialog.
14092  *
14093  * Since: 2.10
14094  **/
14095 void
14096 gtk_tree_view_set_search_position_func (GtkTreeView                   *tree_view,
14097                                         GtkTreeViewSearchPositionFunc  func,
14098                                         gpointer                       user_data,
14099                                         GDestroyNotify                 destroy)
14100 {
14101   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
14102
14103   if (tree_view->priv->search_position_destroy)
14104     tree_view->priv->search_position_destroy (tree_view->priv->search_position_user_data);
14105
14106   tree_view->priv->search_position_func = func;
14107   tree_view->priv->search_position_user_data = user_data;
14108   tree_view->priv->search_position_destroy = destroy;
14109   if (tree_view->priv->search_position_func == NULL)
14110     tree_view->priv->search_position_func = gtk_tree_view_search_position_func;
14111 }
14112
14113 /**
14114  * gtk_tree_view_get_search_position_func:
14115  * @tree_view: A #GtkTreeView
14116  *
14117  * Returns the positioning function currently in use.
14118  *
14119  * Return value: the currently used function for positioning the search dialog.
14120  *
14121  * Since: 2.10
14122  */
14123 GtkTreeViewSearchPositionFunc
14124 gtk_tree_view_get_search_position_func (GtkTreeView *tree_view)
14125 {
14126   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), NULL);
14127
14128   return tree_view->priv->search_position_func;
14129 }
14130
14131
14132 static void
14133 gtk_tree_view_search_dialog_hide (GtkWidget   *search_dialog,
14134                                   GtkTreeView *tree_view,
14135                                   GdkDevice   *device)
14136 {
14137   if (tree_view->priv->disable_popdown)
14138     return;
14139
14140   if (tree_view->priv->search_entry_changed_id)
14141     {
14142       g_signal_handler_disconnect (tree_view->priv->search_entry,
14143                                    tree_view->priv->search_entry_changed_id);
14144       tree_view->priv->search_entry_changed_id = 0;
14145     }
14146   if (tree_view->priv->typeselect_flush_timeout)
14147     {
14148       g_source_remove (tree_view->priv->typeselect_flush_timeout);
14149       tree_view->priv->typeselect_flush_timeout = 0;
14150     }
14151
14152   if (gtk_widget_get_visible (search_dialog))
14153     {
14154       /* send focus-in event */
14155       send_focus_change (GTK_WIDGET (tree_view->priv->search_entry), device, FALSE);
14156       gtk_widget_hide (search_dialog);
14157       gtk_entry_set_text (GTK_ENTRY (tree_view->priv->search_entry), "");
14158       send_focus_change (GTK_WIDGET (tree_view), device, TRUE);
14159     }
14160 }
14161
14162 static void
14163 gtk_tree_view_search_position_func (GtkTreeView *tree_view,
14164                                     GtkWidget   *search_dialog,
14165                                     gpointer     user_data)
14166 {
14167   gint x, y;
14168   gint tree_x, tree_y;
14169   gint tree_width, tree_height;
14170   GdkWindow *tree_window = gtk_widget_get_window (GTK_WIDGET (tree_view));
14171   GdkScreen *screen = gdk_window_get_screen (tree_window);
14172   GtkRequisition requisition;
14173   gint monitor_num;
14174   GdkRectangle monitor;
14175
14176   monitor_num = gdk_screen_get_monitor_at_window (screen, tree_window);
14177   gdk_screen_get_monitor_geometry (screen, monitor_num, &monitor);
14178
14179   gtk_widget_realize (search_dialog);
14180
14181   gdk_window_get_origin (tree_window, &tree_x, &tree_y);
14182   tree_width = gdk_window_get_width (tree_window);
14183   tree_height = gdk_window_get_height (tree_window);
14184   gtk_widget_get_preferred_size (search_dialog, &requisition, NULL);
14185
14186   if (tree_x + tree_width > gdk_screen_get_width (screen))
14187     x = gdk_screen_get_width (screen) - requisition.width;
14188   else if (tree_x + tree_width - requisition.width < 0)
14189     x = 0;
14190   else
14191     x = tree_x + tree_width - requisition.width;
14192
14193   if (tree_y + tree_height + requisition.height > gdk_screen_get_height (screen))
14194     y = gdk_screen_get_height (screen) - requisition.height;
14195   else if (tree_y + tree_height < 0) /* isn't really possible ... */
14196     y = 0;
14197   else
14198     y = tree_y + tree_height;
14199
14200   gtk_window_move (GTK_WINDOW (search_dialog), x, y);
14201 }
14202
14203 static void
14204 gtk_tree_view_search_disable_popdown (GtkEntry *entry,
14205                                       GtkMenu  *menu,
14206                                       gpointer  data)
14207 {
14208   GtkTreeView *tree_view = (GtkTreeView *)data;
14209
14210   tree_view->priv->disable_popdown = 1;
14211   g_signal_connect (menu, "hide",
14212                     G_CALLBACK (gtk_tree_view_search_enable_popdown), data);
14213 }
14214
14215 /* Because we're visible but offscreen, we just set a flag in the preedit
14216  * callback.
14217  */
14218 static void
14219 gtk_tree_view_search_preedit_changed (GtkIMContext *im_context,
14220                                       GtkTreeView  *tree_view)
14221 {
14222   tree_view->priv->imcontext_changed = 1;
14223   if (tree_view->priv->typeselect_flush_timeout)
14224     {
14225       g_source_remove (tree_view->priv->typeselect_flush_timeout);
14226       tree_view->priv->typeselect_flush_timeout =
14227         gdk_threads_add_timeout (GTK_TREE_VIEW_SEARCH_DIALOG_TIMEOUT,
14228                        (GSourceFunc) gtk_tree_view_search_entry_flush_timeout,
14229                        tree_view);
14230     }
14231
14232 }
14233
14234 static void
14235 gtk_tree_view_search_activate (GtkEntry    *entry,
14236                                GtkTreeView *tree_view)
14237 {
14238   GtkTreePath *path;
14239   GtkRBNode *node;
14240   GtkRBTree *tree;
14241
14242   gtk_tree_view_search_dialog_hide (tree_view->priv->search_window,
14243                                     tree_view,
14244                                     gtk_get_current_event_device ());
14245
14246   /* If we have a row selected and it's the cursor row, we activate
14247    * the row XXX */
14248   if (gtk_tree_row_reference_valid (tree_view->priv->cursor))
14249     {
14250       path = gtk_tree_row_reference_get_path (tree_view->priv->cursor);
14251
14252       _gtk_tree_view_find_node (tree_view, path, &tree, &node);
14253
14254       if (node && GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_SELECTED))
14255         gtk_tree_view_row_activated (tree_view, path, tree_view->priv->focus_column);
14256
14257       gtk_tree_path_free (path);
14258     }
14259 }
14260
14261 static gboolean
14262 gtk_tree_view_real_search_enable_popdown (gpointer data)
14263 {
14264   GtkTreeView *tree_view = (GtkTreeView *)data;
14265
14266   tree_view->priv->disable_popdown = 0;
14267
14268   return FALSE;
14269 }
14270
14271 static void
14272 gtk_tree_view_search_enable_popdown (GtkWidget *widget,
14273                                      gpointer   data)
14274 {
14275   gdk_threads_add_timeout_full (G_PRIORITY_HIGH, 200, gtk_tree_view_real_search_enable_popdown, g_object_ref (data), g_object_unref);
14276 }
14277
14278 static gboolean
14279 gtk_tree_view_search_delete_event (GtkWidget *widget,
14280                                    GdkEventAny *event,
14281                                    GtkTreeView *tree_view)
14282 {
14283   g_return_val_if_fail (GTK_IS_WIDGET (widget), FALSE);
14284
14285   gtk_tree_view_search_dialog_hide (widget, tree_view, NULL);
14286
14287   return TRUE;
14288 }
14289
14290 static gboolean
14291 gtk_tree_view_search_button_press_event (GtkWidget *widget,
14292                                          GdkEventButton *event,
14293                                          GtkTreeView *tree_view)
14294 {
14295   GdkDevice *keyb_device;
14296
14297   g_return_val_if_fail (GTK_IS_WIDGET (widget), FALSE);
14298
14299   keyb_device = gdk_device_get_associated_device (event->device);
14300   gtk_tree_view_search_dialog_hide (widget, tree_view, keyb_device);
14301
14302   if (event->window == tree_view->priv->bin_window)
14303     gtk_tree_view_button_press (GTK_WIDGET (tree_view), event);
14304
14305   return TRUE;
14306 }
14307
14308 static gboolean
14309 gtk_tree_view_search_scroll_event (GtkWidget *widget,
14310                                    GdkEventScroll *event,
14311                                    GtkTreeView *tree_view)
14312 {
14313   gboolean retval = FALSE;
14314
14315   if (event->direction == GDK_SCROLL_UP)
14316     {
14317       gtk_tree_view_search_move (widget, tree_view, TRUE);
14318       retval = TRUE;
14319     }
14320   else if (event->direction == GDK_SCROLL_DOWN)
14321     {
14322       gtk_tree_view_search_move (widget, tree_view, FALSE);
14323       retval = TRUE;
14324     }
14325
14326   /* renew the flush timeout */
14327   if (retval && tree_view->priv->typeselect_flush_timeout
14328       && !tree_view->priv->search_custom_entry_set)
14329     {
14330       g_source_remove (tree_view->priv->typeselect_flush_timeout);
14331       tree_view->priv->typeselect_flush_timeout =
14332         gdk_threads_add_timeout (GTK_TREE_VIEW_SEARCH_DIALOG_TIMEOUT,
14333                        (GSourceFunc) gtk_tree_view_search_entry_flush_timeout,
14334                        tree_view);
14335     }
14336
14337   return retval;
14338 }
14339
14340 static gboolean
14341 gtk_tree_view_search_key_press_event (GtkWidget *widget,
14342                                       GdkEventKey *event,
14343                                       GtkTreeView *tree_view)
14344 {
14345   gboolean retval = FALSE;
14346
14347   g_return_val_if_fail (GTK_IS_WIDGET (widget), FALSE);
14348   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), FALSE);
14349
14350   /* close window and cancel the search */
14351   if (!tree_view->priv->search_custom_entry_set
14352       && (event->keyval == GDK_KEY_Escape ||
14353           event->keyval == GDK_KEY_Tab ||
14354             event->keyval == GDK_KEY_KP_Tab ||
14355             event->keyval == GDK_KEY_ISO_Left_Tab))
14356     {
14357       gtk_tree_view_search_dialog_hide (widget, tree_view,
14358                                         gdk_event_get_device ((GdkEvent *) event));
14359       return TRUE;
14360     }
14361
14362   /* select previous matching iter */
14363   if (event->keyval == GDK_KEY_Up || event->keyval == GDK_KEY_KP_Up)
14364     {
14365       if (!gtk_tree_view_search_move (widget, tree_view, TRUE))
14366         gtk_widget_error_bell (widget);
14367
14368       retval = TRUE;
14369     }
14370
14371   if (((event->state & (GTK_DEFAULT_ACCEL_MOD_MASK | GDK_SHIFT_MASK)) == (GTK_DEFAULT_ACCEL_MOD_MASK | GDK_SHIFT_MASK))
14372       && (event->keyval == GDK_KEY_g || event->keyval == GDK_KEY_G))
14373     {
14374       if (!gtk_tree_view_search_move (widget, tree_view, TRUE))
14375         gtk_widget_error_bell (widget);
14376
14377       retval = TRUE;
14378     }
14379
14380   /* select next matching iter */
14381   if (event->keyval == GDK_KEY_Down || event->keyval == GDK_KEY_KP_Down)
14382     {
14383       if (!gtk_tree_view_search_move (widget, tree_view, FALSE))
14384         gtk_widget_error_bell (widget);
14385
14386       retval = TRUE;
14387     }
14388
14389   if (((event->state & (GTK_DEFAULT_ACCEL_MOD_MASK | GDK_SHIFT_MASK)) == GTK_DEFAULT_ACCEL_MOD_MASK)
14390       && (event->keyval == GDK_KEY_g || event->keyval == GDK_KEY_G))
14391     {
14392       if (!gtk_tree_view_search_move (widget, tree_view, FALSE))
14393         gtk_widget_error_bell (widget);
14394
14395       retval = TRUE;
14396     }
14397
14398   /* renew the flush timeout */
14399   if (retval && tree_view->priv->typeselect_flush_timeout
14400       && !tree_view->priv->search_custom_entry_set)
14401     {
14402       g_source_remove (tree_view->priv->typeselect_flush_timeout);
14403       tree_view->priv->typeselect_flush_timeout =
14404         gdk_threads_add_timeout (GTK_TREE_VIEW_SEARCH_DIALOG_TIMEOUT,
14405                        (GSourceFunc) gtk_tree_view_search_entry_flush_timeout,
14406                        tree_view);
14407     }
14408
14409   return retval;
14410 }
14411
14412 /*  this function returns FALSE if there is a search string but
14413  *  nothing was found, and TRUE otherwise.
14414  */
14415 static gboolean
14416 gtk_tree_view_search_move (GtkWidget   *window,
14417                            GtkTreeView *tree_view,
14418                            gboolean     up)
14419 {
14420   gboolean ret;
14421   gint len;
14422   gint count = 0;
14423   const gchar *text;
14424   GtkTreeIter iter;
14425   GtkTreeModel *model;
14426   GtkTreeSelection *selection;
14427
14428   text = gtk_entry_get_text (GTK_ENTRY (tree_view->priv->search_entry));
14429
14430   g_return_val_if_fail (text != NULL, FALSE);
14431
14432   len = strlen (text);
14433
14434   if (up && tree_view->priv->selected_iter == 1)
14435     return strlen (text) < 1;
14436
14437   len = strlen (text);
14438
14439   if (len < 1)
14440     return TRUE;
14441
14442   model = gtk_tree_view_get_model (tree_view);
14443   selection = gtk_tree_view_get_selection (tree_view);
14444
14445   /* search */
14446   gtk_tree_selection_unselect_all (selection);
14447   if (!gtk_tree_model_get_iter_first (model, &iter))
14448     return TRUE;
14449
14450   ret = gtk_tree_view_search_iter (model, selection, &iter, text,
14451                                    &count, up?((tree_view->priv->selected_iter) - 1):((tree_view->priv->selected_iter + 1)));
14452
14453   if (ret)
14454     {
14455       /* found */
14456       tree_view->priv->selected_iter += up?(-1):(1);
14457       return TRUE;
14458     }
14459   else
14460     {
14461       /* return to old iter */
14462       count = 0;
14463       gtk_tree_model_get_iter_first (model, &iter);
14464       gtk_tree_view_search_iter (model, selection,
14465                                  &iter, text,
14466                                  &count, tree_view->priv->selected_iter);
14467       return FALSE;
14468     }
14469 }
14470
14471 static gboolean
14472 gtk_tree_view_search_equal_func (GtkTreeModel *model,
14473                                  gint          column,
14474                                  const gchar  *key,
14475                                  GtkTreeIter  *iter,
14476                                  gpointer      search_data)
14477 {
14478   gboolean retval = TRUE;
14479   const gchar *str;
14480   gchar *normalized_string;
14481   gchar *normalized_key;
14482   gchar *case_normalized_string = NULL;
14483   gchar *case_normalized_key = NULL;
14484   GValue value = {0,};
14485   GValue transformed = {0,};
14486
14487   gtk_tree_model_get_value (model, iter, column, &value);
14488
14489   g_value_init (&transformed, G_TYPE_STRING);
14490
14491   if (!g_value_transform (&value, &transformed))
14492     {
14493       g_value_unset (&value);
14494       return TRUE;
14495     }
14496
14497   g_value_unset (&value);
14498
14499   str = g_value_get_string (&transformed);
14500   if (!str)
14501     {
14502       g_value_unset (&transformed);
14503       return TRUE;
14504     }
14505
14506   normalized_string = g_utf8_normalize (str, -1, G_NORMALIZE_ALL);
14507   normalized_key = g_utf8_normalize (key, -1, G_NORMALIZE_ALL);
14508
14509   if (normalized_string && normalized_key)
14510     {
14511       case_normalized_string = g_utf8_casefold (normalized_string, -1);
14512       case_normalized_key = g_utf8_casefold (normalized_key, -1);
14513
14514       if (strncmp (case_normalized_key, case_normalized_string, strlen (case_normalized_key)) == 0)
14515         retval = FALSE;
14516     }
14517
14518   g_value_unset (&transformed);
14519   g_free (normalized_key);
14520   g_free (normalized_string);
14521   g_free (case_normalized_key);
14522   g_free (case_normalized_string);
14523
14524   return retval;
14525 }
14526
14527 static gboolean
14528 gtk_tree_view_search_iter (GtkTreeModel     *model,
14529                            GtkTreeSelection *selection,
14530                            GtkTreeIter      *iter,
14531                            const gchar      *text,
14532                            gint             *count,
14533                            gint              n)
14534 {
14535   GtkRBTree *tree = NULL;
14536   GtkRBNode *node = NULL;
14537   GtkTreePath *path;
14538
14539   GtkTreeView *tree_view = gtk_tree_selection_get_tree_view (selection);
14540
14541   path = gtk_tree_model_get_path (model, iter);
14542   _gtk_tree_view_find_node (tree_view, path, &tree, &node);
14543
14544   do
14545     {
14546       if (! tree_view->priv->search_equal_func (model, tree_view->priv->search_column, text, iter, tree_view->priv->search_user_data))
14547         {
14548           (*count)++;
14549           if (*count == n)
14550             {
14551               gtk_tree_view_scroll_to_cell (tree_view, path, NULL,
14552                                             TRUE, 0.5, 0.0);
14553               gtk_tree_selection_select_iter (selection, iter);
14554               gtk_tree_view_real_set_cursor (tree_view, path, FALSE, TRUE);
14555
14556               if (path)
14557                 gtk_tree_path_free (path);
14558
14559               return TRUE;
14560             }
14561         }
14562
14563       if (node->children)
14564         {
14565           gboolean has_child;
14566           GtkTreeIter tmp;
14567
14568           tree = node->children;
14569           node = tree->root;
14570
14571           while (node->left != tree->nil)
14572             node = node->left;
14573
14574           tmp = *iter;
14575           has_child = gtk_tree_model_iter_children (model, iter, &tmp);
14576           gtk_tree_path_down (path);
14577
14578           /* sanity check */
14579           TREE_VIEW_INTERNAL_ASSERT (has_child, FALSE);
14580         }
14581       else
14582         {
14583           gboolean done = FALSE;
14584
14585           do
14586             {
14587               node = _gtk_rbtree_next (tree, node);
14588
14589               if (node)
14590                 {
14591                   gboolean has_next;
14592
14593                   has_next = gtk_tree_model_iter_next (model, iter);
14594
14595                   done = TRUE;
14596                   gtk_tree_path_next (path);
14597
14598                   /* sanity check */
14599                   TREE_VIEW_INTERNAL_ASSERT (has_next, FALSE);
14600                 }
14601               else
14602                 {
14603                   gboolean has_parent;
14604                   GtkTreeIter tmp_iter = *iter;
14605
14606                   node = tree->parent_node;
14607                   tree = tree->parent_tree;
14608
14609                   if (!tree)
14610                     {
14611                       if (path)
14612                         gtk_tree_path_free (path);
14613
14614                       /* we've run out of tree, done with this func */
14615                       return FALSE;
14616                     }
14617
14618                   has_parent = gtk_tree_model_iter_parent (model,
14619                                                            iter,
14620                                                            &tmp_iter);
14621                   gtk_tree_path_up (path);
14622
14623                   /* sanity check */
14624                   TREE_VIEW_INTERNAL_ASSERT (has_parent, FALSE);
14625                 }
14626             }
14627           while (!done);
14628         }
14629     }
14630   while (1);
14631
14632   return FALSE;
14633 }
14634
14635 static void
14636 gtk_tree_view_search_init (GtkWidget   *entry,
14637                            GtkTreeView *tree_view)
14638 {
14639   gint ret;
14640   gint count = 0;
14641   const gchar *text;
14642   GtkTreeIter iter;
14643   GtkTreeModel *model;
14644   GtkTreeSelection *selection;
14645
14646   g_return_if_fail (GTK_IS_ENTRY (entry));
14647   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
14648
14649   text = gtk_entry_get_text (GTK_ENTRY (entry));
14650
14651   model = gtk_tree_view_get_model (tree_view);
14652   selection = gtk_tree_view_get_selection (tree_view);
14653
14654   /* search */
14655   gtk_tree_selection_unselect_all (selection);
14656   if (tree_view->priv->typeselect_flush_timeout
14657       && !tree_view->priv->search_custom_entry_set)
14658     {
14659       g_source_remove (tree_view->priv->typeselect_flush_timeout);
14660       tree_view->priv->typeselect_flush_timeout =
14661         gdk_threads_add_timeout (GTK_TREE_VIEW_SEARCH_DIALOG_TIMEOUT,
14662                        (GSourceFunc) gtk_tree_view_search_entry_flush_timeout,
14663                        tree_view);
14664     }
14665
14666   if (*text == '\0')
14667     return;
14668
14669   if (!gtk_tree_model_get_iter_first (model, &iter))
14670     return;
14671
14672   ret = gtk_tree_view_search_iter (model, selection,
14673                                    &iter, text,
14674                                    &count, 1);
14675
14676   if (ret)
14677     tree_view->priv->selected_iter = 1;
14678 }
14679
14680 static void
14681 gtk_tree_view_remove_widget (GtkCellEditable *cell_editable,
14682                              GtkTreeView     *tree_view)
14683 {
14684   if (tree_view->priv->edited_column == NULL)
14685     return;
14686
14687   _gtk_tree_view_column_stop_editing (tree_view->priv->edited_column);
14688   tree_view->priv->edited_column = NULL;
14689
14690   if (gtk_widget_has_focus (GTK_WIDGET (cell_editable)))
14691     gtk_widget_grab_focus (GTK_WIDGET (tree_view));
14692
14693   g_signal_handlers_disconnect_by_func (cell_editable,
14694                                         gtk_tree_view_remove_widget,
14695                                         tree_view);
14696
14697   gtk_container_remove (GTK_CONTAINER (tree_view),
14698                         GTK_WIDGET (cell_editable));
14699
14700   /* FIXME should only redraw a single node */
14701   gtk_widget_queue_draw (GTK_WIDGET (tree_view));
14702 }
14703
14704 static gboolean
14705 gtk_tree_view_start_editing (GtkTreeView *tree_view,
14706                              GtkTreePath *cursor_path)
14707 {
14708   GtkTreeIter iter;
14709   GdkRectangle background_area;
14710   GdkRectangle cell_area;
14711   GtkCellEditable *editable_widget = NULL;
14712   gchar *path_string;
14713   guint flags = 0; /* can be 0, as the flags are primarily for rendering */
14714   gint retval = FALSE;
14715   GtkRBTree *cursor_tree;
14716   GtkRBNode *cursor_node;
14717
14718   g_assert (tree_view->priv->focus_column);
14719
14720   if (!gtk_widget_get_realized (GTK_WIDGET (tree_view)))
14721     return FALSE;
14722
14723   if (_gtk_tree_view_find_node (tree_view, cursor_path, &cursor_tree, &cursor_node) ||
14724       cursor_node == NULL)
14725     return FALSE;
14726
14727   path_string = gtk_tree_path_to_string (cursor_path);
14728   gtk_tree_model_get_iter (tree_view->priv->model, &iter, cursor_path);
14729
14730   validate_row (tree_view, cursor_tree, cursor_node, &iter, cursor_path);
14731
14732   gtk_tree_view_column_cell_set_cell_data (tree_view->priv->focus_column,
14733                                            tree_view->priv->model,
14734                                            &iter,
14735                                            GTK_RBNODE_FLAG_SET (cursor_node, GTK_RBNODE_IS_PARENT),
14736                                            cursor_node->children?TRUE:FALSE);
14737   gtk_tree_view_get_background_area (tree_view,
14738                                      cursor_path,
14739                                      tree_view->priv->focus_column,
14740                                      &background_area);
14741   gtk_tree_view_get_cell_area (tree_view,
14742                                cursor_path,
14743                                tree_view->priv->focus_column,
14744                                &cell_area);
14745
14746   if (_gtk_tree_view_column_cell_event (tree_view->priv->focus_column,
14747                                         &editable_widget,
14748                                         NULL,
14749                                         path_string,
14750                                         &background_area,
14751                                         &cell_area,
14752                                         flags))
14753     {
14754       retval = TRUE;
14755       if (editable_widget != NULL)
14756         {
14757           gint left, right;
14758           GdkRectangle area;
14759           GtkCellRenderer *cell;
14760
14761           area = cell_area;
14762           cell = _gtk_tree_view_column_get_edited_cell (tree_view->priv->focus_column);
14763
14764           _gtk_tree_view_column_get_neighbor_sizes (tree_view->priv->focus_column, cell, &left, &right);
14765
14766           area.x += left;
14767           area.width -= right + left;
14768
14769           gtk_tree_view_real_start_editing (tree_view,
14770                                             tree_view->priv->focus_column,
14771                                             cursor_path,
14772                                             editable_widget,
14773                                             &area,
14774                                             NULL,
14775                                             flags);
14776         }
14777
14778     }
14779   g_free (path_string);
14780   return retval;
14781 }
14782
14783 static void
14784 gtk_tree_view_real_start_editing (GtkTreeView       *tree_view,
14785                                   GtkTreeViewColumn *column,
14786                                   GtkTreePath       *path,
14787                                   GtkCellEditable   *cell_editable,
14788                                   GdkRectangle      *cell_area,
14789                                   GdkEvent          *event,
14790                                   guint              flags)
14791 {
14792   gint pre_val = tree_view->priv->vadjustment->value;
14793   GtkRequisition requisition;
14794
14795   tree_view->priv->edited_column = column;
14796   _gtk_tree_view_column_start_editing (column, GTK_CELL_EDITABLE (cell_editable));
14797
14798   gtk_tree_view_real_set_cursor (tree_view, path, FALSE, TRUE);
14799   cell_area->y += pre_val - (int)tree_view->priv->vadjustment->value;
14800
14801   gtk_widget_get_preferred_size (GTK_WIDGET (cell_editable),
14802                                  &requisition, NULL);
14803
14804   GTK_TREE_VIEW_SET_FLAG (tree_view, GTK_TREE_VIEW_DRAW_KEYFOCUS);
14805
14806   if (requisition.height < cell_area->height)
14807     {
14808       gint diff = cell_area->height - requisition.height;
14809       gtk_tree_view_put (tree_view,
14810                          GTK_WIDGET (cell_editable),
14811                          cell_area->x, cell_area->y + diff/2,
14812                          cell_area->width, requisition.height);
14813     }
14814   else
14815     {
14816       gtk_tree_view_put (tree_view,
14817                          GTK_WIDGET (cell_editable),
14818                          cell_area->x, cell_area->y,
14819                          cell_area->width, cell_area->height);
14820     }
14821
14822   gtk_cell_editable_start_editing (GTK_CELL_EDITABLE (cell_editable),
14823                                    (GdkEvent *)event);
14824
14825   gtk_widget_grab_focus (GTK_WIDGET (cell_editable));
14826   g_signal_connect (cell_editable, "remove-widget",
14827                     G_CALLBACK (gtk_tree_view_remove_widget), tree_view);
14828 }
14829
14830 static void
14831 gtk_tree_view_stop_editing (GtkTreeView *tree_view,
14832                             gboolean     cancel_editing)
14833 {
14834   GtkTreeViewColumn *column;
14835   GtkCellRenderer *cell;
14836
14837   if (tree_view->priv->edited_column == NULL)
14838     return;
14839
14840   /*
14841    * This is very evil. We need to do this, because
14842    * gtk_cell_editable_editing_done may trigger gtk_tree_view_row_changed
14843    * later on. If gtk_tree_view_row_changed notices
14844    * tree_view->priv->edited_column != NULL, it'll call
14845    * gtk_tree_view_stop_editing again. Bad things will happen then.
14846    *
14847    * Please read that again if you intend to modify anything here.
14848    */
14849
14850   column = tree_view->priv->edited_column;
14851   tree_view->priv->edited_column = NULL;
14852
14853   cell = _gtk_tree_view_column_get_edited_cell (column);
14854   gtk_cell_renderer_stop_editing (cell, cancel_editing);
14855
14856   if (!cancel_editing)
14857     gtk_cell_editable_editing_done (column->editable_widget);
14858
14859   tree_view->priv->edited_column = column;
14860
14861   gtk_cell_editable_remove_widget (column->editable_widget);
14862 }
14863
14864
14865 /**
14866  * gtk_tree_view_set_hover_selection:
14867  * @tree_view: a #GtkTreeView
14868  * @hover: %TRUE to enable hover selection mode
14869  *
14870  * Enables of disables the hover selection mode of @tree_view.
14871  * Hover selection makes the selected row follow the pointer.
14872  * Currently, this works only for the selection modes
14873  * %GTK_SELECTION_SINGLE and %GTK_SELECTION_BROWSE.
14874  *
14875  * Since: 2.6
14876  **/
14877 void
14878 gtk_tree_view_set_hover_selection (GtkTreeView *tree_view,
14879                                    gboolean     hover)
14880 {
14881   hover = hover != FALSE;
14882
14883   if (hover != tree_view->priv->hover_selection)
14884     {
14885       tree_view->priv->hover_selection = hover;
14886
14887       g_object_notify (G_OBJECT (tree_view), "hover-selection");
14888     }
14889 }
14890
14891 /**
14892  * gtk_tree_view_get_hover_selection:
14893  * @tree_view: a #GtkTreeView
14894  *
14895  * Returns whether hover selection mode is turned on for @tree_view.
14896  *
14897  * Return value: %TRUE if @tree_view is in hover selection mode
14898  *
14899  * Since: 2.6
14900  **/
14901 gboolean
14902 gtk_tree_view_get_hover_selection (GtkTreeView *tree_view)
14903 {
14904   return tree_view->priv->hover_selection;
14905 }
14906
14907 /**
14908  * gtk_tree_view_set_hover_expand:
14909  * @tree_view: a #GtkTreeView
14910  * @expand: %TRUE to enable hover selection mode
14911  *
14912  * Enables of disables the hover expansion mode of @tree_view.
14913  * Hover expansion makes rows expand or collapse if the pointer
14914  * moves over them.
14915  *
14916  * Since: 2.6
14917  **/
14918 void
14919 gtk_tree_view_set_hover_expand (GtkTreeView *tree_view,
14920                                 gboolean     expand)
14921 {
14922   expand = expand != FALSE;
14923
14924   if (expand != tree_view->priv->hover_expand)
14925     {
14926       tree_view->priv->hover_expand = expand;
14927
14928       g_object_notify (G_OBJECT (tree_view), "hover-expand");
14929     }
14930 }
14931
14932 /**
14933  * gtk_tree_view_get_hover_expand:
14934  * @tree_view: a #GtkTreeView
14935  *
14936  * Returns whether hover expansion mode is turned on for @tree_view.
14937  *
14938  * Return value: %TRUE if @tree_view is in hover expansion mode
14939  *
14940  * Since: 2.6
14941  **/
14942 gboolean
14943 gtk_tree_view_get_hover_expand (GtkTreeView *tree_view)
14944 {
14945   return tree_view->priv->hover_expand;
14946 }
14947
14948 /**
14949  * gtk_tree_view_set_rubber_banding:
14950  * @tree_view: a #GtkTreeView
14951  * @enable: %TRUE to enable rubber banding
14952  *
14953  * Enables or disables rubber banding in @tree_view.  If the selection mode
14954  * is #GTK_SELECTION_MULTIPLE, rubber banding will allow the user to select
14955  * multiple rows by dragging the mouse.
14956  *
14957  * Since: 2.10
14958  **/
14959 void
14960 gtk_tree_view_set_rubber_banding (GtkTreeView *tree_view,
14961                                   gboolean     enable)
14962 {
14963   enable = enable != FALSE;
14964
14965   if (enable != tree_view->priv->rubber_banding_enable)
14966     {
14967       tree_view->priv->rubber_banding_enable = enable;
14968
14969       g_object_notify (G_OBJECT (tree_view), "rubber-banding");
14970     }
14971 }
14972
14973 /**
14974  * gtk_tree_view_get_rubber_banding:
14975  * @tree_view: a #GtkTreeView
14976  *
14977  * Returns whether rubber banding is turned on for @tree_view.  If the
14978  * selection mode is #GTK_SELECTION_MULTIPLE, rubber banding will allow the
14979  * user to select multiple rows by dragging the mouse.
14980  *
14981  * Return value: %TRUE if rubber banding in @tree_view is enabled.
14982  *
14983  * Since: 2.10
14984  **/
14985 gboolean
14986 gtk_tree_view_get_rubber_banding (GtkTreeView *tree_view)
14987 {
14988   return tree_view->priv->rubber_banding_enable;
14989 }
14990
14991 /**
14992  * gtk_tree_view_is_rubber_banding_active:
14993  * @tree_view: a #GtkTreeView
14994  *
14995  * Returns whether a rubber banding operation is currently being done
14996  * in @tree_view.
14997  *
14998  * Return value: %TRUE if a rubber banding operation is currently being
14999  * done in @tree_view.
15000  *
15001  * Since: 2.12
15002  **/
15003 gboolean
15004 gtk_tree_view_is_rubber_banding_active (GtkTreeView *tree_view)
15005 {
15006   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), FALSE);
15007
15008   if (tree_view->priv->rubber_banding_enable
15009       && tree_view->priv->rubber_band_status == RUBBER_BAND_ACTIVE)
15010     return TRUE;
15011
15012   return FALSE;
15013 }
15014
15015 /**
15016  * gtk_tree_view_get_row_separator_func:
15017  * @tree_view: a #GtkTreeView
15018  *
15019  * Returns the current row separator function.
15020  *
15021  * Return value: the current row separator function.
15022  *
15023  * Since: 2.6
15024  **/
15025 GtkTreeViewRowSeparatorFunc
15026 gtk_tree_view_get_row_separator_func (GtkTreeView *tree_view)
15027 {
15028   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), NULL);
15029
15030   return tree_view->priv->row_separator_func;
15031 }
15032
15033 /**
15034  * gtk_tree_view_set_row_separator_func:
15035  * @tree_view: a #GtkTreeView
15036  * @func: (allow-none): a #GtkTreeViewRowSeparatorFunc
15037  * @data: (allow-none): user data to pass to @func, or %NULL
15038  * @destroy: (allow-none): destroy notifier for @data, or %NULL
15039  *
15040  * Sets the row separator function, which is used to determine
15041  * whether a row should be drawn as a separator. If the row separator
15042  * function is %NULL, no separators are drawn. This is the default value.
15043  *
15044  * Since: 2.6
15045  **/
15046 void
15047 gtk_tree_view_set_row_separator_func (GtkTreeView                 *tree_view,
15048                                       GtkTreeViewRowSeparatorFunc  func,
15049                                       gpointer                     data,
15050                                       GDestroyNotify               destroy)
15051 {
15052   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
15053
15054   if (tree_view->priv->row_separator_destroy)
15055     tree_view->priv->row_separator_destroy (tree_view->priv->row_separator_data);
15056
15057   tree_view->priv->row_separator_func = func;
15058   tree_view->priv->row_separator_data = data;
15059   tree_view->priv->row_separator_destroy = destroy;
15060
15061   /* Have the tree recalculate heights */
15062   _gtk_rbtree_mark_invalid (tree_view->priv->tree);
15063   gtk_widget_queue_resize (GTK_WIDGET (tree_view));
15064 }
15065
15066
15067 static void
15068 gtk_tree_view_grab_notify (GtkWidget *widget,
15069                            gboolean   was_grabbed)
15070 {
15071   GtkTreeView *tree_view = GTK_TREE_VIEW (widget);
15072
15073   tree_view->priv->in_grab = !was_grabbed;
15074
15075   if (!was_grabbed)
15076     {
15077       tree_view->priv->pressed_button = -1;
15078
15079       if (tree_view->priv->rubber_band_status)
15080         gtk_tree_view_stop_rubber_band (tree_view);
15081     }
15082 }
15083
15084 static void
15085 gtk_tree_view_state_changed (GtkWidget      *widget,
15086                              GtkStateType    previous_state)
15087 {
15088   GtkTreeView *tree_view = GTK_TREE_VIEW (widget);
15089
15090   if (gtk_widget_get_realized (widget))
15091     {
15092       gdk_window_set_background (tree_view->priv->bin_window,
15093                                  &gtk_widget_get_style (widget)->base[gtk_widget_get_state (widget)]);
15094     }
15095
15096   gtk_widget_queue_draw (widget);
15097 }
15098
15099 /**
15100  * gtk_tree_view_get_grid_lines:
15101  * @tree_view: a #GtkTreeView
15102  *
15103  * Returns which grid lines are enabled in @tree_view.
15104  *
15105  * Return value: a #GtkTreeViewGridLines value indicating which grid lines
15106  * are enabled.
15107  *
15108  * Since: 2.10
15109  */
15110 GtkTreeViewGridLines
15111 gtk_tree_view_get_grid_lines (GtkTreeView *tree_view)
15112 {
15113   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), 0);
15114
15115   return tree_view->priv->grid_lines;
15116 }
15117
15118 /**
15119  * gtk_tree_view_set_grid_lines:
15120  * @tree_view: a #GtkTreeView
15121  * @grid_lines: a #GtkTreeViewGridLines value indicating which grid lines to
15122  * enable.
15123  *
15124  * Sets which grid lines to draw in @tree_view.
15125  *
15126  * Since: 2.10
15127  */
15128 void
15129 gtk_tree_view_set_grid_lines (GtkTreeView           *tree_view,
15130                               GtkTreeViewGridLines   grid_lines)
15131 {
15132   GtkTreeViewPrivate *priv;
15133   GtkWidget *widget;
15134   GtkTreeViewGridLines old_grid_lines;
15135
15136   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
15137
15138   priv = tree_view->priv;
15139   widget = GTK_WIDGET (tree_view);
15140
15141   old_grid_lines = priv->grid_lines;
15142   priv->grid_lines = grid_lines;
15143
15144   if (gtk_widget_get_realized (widget))
15145     {
15146       if (grid_lines == GTK_TREE_VIEW_GRID_LINES_NONE &&
15147           priv->grid_line_width)
15148         {
15149           priv->grid_line_width = 0;
15150         }
15151
15152       if (grid_lines != GTK_TREE_VIEW_GRID_LINES_NONE &&
15153           !priv->grid_line_width)
15154         {
15155           gint8 *dash_list;
15156
15157           gtk_widget_style_get (widget,
15158                                 "grid-line-width", &priv->grid_line_width,
15159                                 "grid-line-pattern", (gchar *)&dash_list,
15160                                 NULL);
15161
15162           if (dash_list)
15163             {
15164               priv->grid_line_dashes[0] = dash_list[0];
15165               if (dash_list[0])
15166                 priv->grid_line_dashes[1] = dash_list[1];
15167
15168               g_free (dash_list);
15169             }
15170           else
15171             {
15172               priv->grid_line_dashes[0] = 1;
15173               priv->grid_line_dashes[1] = 1;
15174             }
15175         }
15176     }
15177
15178   if (old_grid_lines != grid_lines)
15179     {
15180       gtk_widget_queue_draw (GTK_WIDGET (tree_view));
15181
15182       g_object_notify (G_OBJECT (tree_view), "enable-grid-lines");
15183     }
15184 }
15185
15186 /**
15187  * gtk_tree_view_get_enable_tree_lines:
15188  * @tree_view: a #GtkTreeView.
15189  *
15190  * Returns whether or not tree lines are drawn in @tree_view.
15191  *
15192  * Return value: %TRUE if tree lines are drawn in @tree_view, %FALSE
15193  * otherwise.
15194  *
15195  * Since: 2.10
15196  */
15197 gboolean
15198 gtk_tree_view_get_enable_tree_lines (GtkTreeView *tree_view)
15199 {
15200   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), FALSE);
15201
15202   return tree_view->priv->tree_lines_enabled;
15203 }
15204
15205 /**
15206  * gtk_tree_view_set_enable_tree_lines:
15207  * @tree_view: a #GtkTreeView
15208  * @enabled: %TRUE to enable tree line drawing, %FALSE otherwise.
15209  *
15210  * Sets whether to draw lines interconnecting the expanders in @tree_view.
15211  * This does not have any visible effects for lists.
15212  *
15213  * Since: 2.10
15214  */
15215 void
15216 gtk_tree_view_set_enable_tree_lines (GtkTreeView *tree_view,
15217                                      gboolean     enabled)
15218 {
15219   GtkTreeViewPrivate *priv;
15220   GtkWidget *widget;
15221   gboolean was_enabled;
15222
15223   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
15224
15225   enabled = enabled != FALSE;
15226
15227   priv = tree_view->priv;
15228   widget = GTK_WIDGET (tree_view);
15229
15230   was_enabled = priv->tree_lines_enabled;
15231
15232   priv->tree_lines_enabled = enabled;
15233
15234   if (gtk_widget_get_realized (widget))
15235     {
15236       if (!enabled && priv->tree_line_width)
15237         {
15238           priv->tree_line_width = 0;
15239         }
15240
15241       if (enabled && !priv->tree_line_width)
15242         {
15243           gint8 *dash_list;
15244           gtk_widget_style_get (widget,
15245                                 "tree-line-width", &priv->tree_line_width,
15246                                 "tree-line-pattern", (gchar *)&dash_list,
15247                                 NULL);
15248
15249           if (dash_list)
15250             {
15251               priv->tree_line_dashes[0] = dash_list[0];
15252               if (dash_list[0])
15253                 priv->tree_line_dashes[1] = dash_list[1];
15254
15255               g_free (dash_list);
15256             }
15257           else
15258             {
15259               priv->tree_line_dashes[0] = 1;
15260               priv->tree_line_dashes[1] = 1;
15261             }
15262         }
15263     }
15264
15265   if (was_enabled != enabled)
15266     {
15267       gtk_widget_queue_draw (GTK_WIDGET (tree_view));
15268
15269       g_object_notify (G_OBJECT (tree_view), "enable-tree-lines");
15270     }
15271 }
15272
15273
15274 /**
15275  * gtk_tree_view_set_show_expanders:
15276  * @tree_view: a #GtkTreeView
15277  * @enabled: %TRUE to enable expander drawing, %FALSE otherwise.
15278  *
15279  * Sets whether to draw and enable expanders and indent child rows in
15280  * @tree_view.  When disabled there will be no expanders visible in trees
15281  * and there will be no way to expand and collapse rows by default.  Also
15282  * note that hiding the expanders will disable the default indentation.  You
15283  * can set a custom indentation in this case using
15284  * gtk_tree_view_set_level_indentation().
15285  * This does not have any visible effects for lists.
15286  *
15287  * Since: 2.12
15288  */
15289 void
15290 gtk_tree_view_set_show_expanders (GtkTreeView *tree_view,
15291                                   gboolean     enabled)
15292 {
15293   gboolean was_enabled;
15294
15295   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
15296
15297   enabled = enabled != FALSE;
15298   was_enabled = GTK_TREE_VIEW_FLAG_SET (tree_view, GTK_TREE_VIEW_SHOW_EXPANDERS);
15299
15300   if (enabled)
15301     GTK_TREE_VIEW_SET_FLAG (tree_view, GTK_TREE_VIEW_SHOW_EXPANDERS);
15302   else
15303     GTK_TREE_VIEW_UNSET_FLAG (tree_view, GTK_TREE_VIEW_SHOW_EXPANDERS);
15304
15305   if (enabled != was_enabled)
15306     gtk_widget_queue_draw (GTK_WIDGET (tree_view));
15307 }
15308
15309 /**
15310  * gtk_tree_view_get_show_expanders:
15311  * @tree_view: a #GtkTreeView.
15312  *
15313  * Returns whether or not expanders are drawn in @tree_view.
15314  *
15315  * Return value: %TRUE if expanders are drawn in @tree_view, %FALSE
15316  * otherwise.
15317  *
15318  * Since: 2.12
15319  */
15320 gboolean
15321 gtk_tree_view_get_show_expanders (GtkTreeView *tree_view)
15322 {
15323   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), FALSE);
15324
15325   return GTK_TREE_VIEW_FLAG_SET (tree_view, GTK_TREE_VIEW_SHOW_EXPANDERS);
15326 }
15327
15328 /**
15329  * gtk_tree_view_set_level_indentation:
15330  * @tree_view: a #GtkTreeView
15331  * @indentation: the amount, in pixels, of extra indentation in @tree_view.
15332  *
15333  * Sets the amount of extra indentation for child levels to use in @tree_view
15334  * in addition to the default indentation.  The value should be specified in
15335  * pixels, a value of 0 disables this feature and in this case only the default
15336  * indentation will be used.
15337  * This does not have any visible effects for lists.
15338  *
15339  * Since: 2.12
15340  */
15341 void
15342 gtk_tree_view_set_level_indentation (GtkTreeView *tree_view,
15343                                      gint         indentation)
15344 {
15345   tree_view->priv->level_indentation = indentation;
15346
15347   gtk_widget_queue_draw (GTK_WIDGET (tree_view));
15348 }
15349
15350 /**
15351  * gtk_tree_view_get_level_indentation:
15352  * @tree_view: a #GtkTreeView.
15353  *
15354  * Returns the amount, in pixels, of extra indentation for child levels
15355  * in @tree_view.
15356  *
15357  * Return value: the amount of extra indentation for child levels in
15358  * @tree_view.  A return value of 0 means that this feature is disabled.
15359  *
15360  * Since: 2.12
15361  */
15362 gint
15363 gtk_tree_view_get_level_indentation (GtkTreeView *tree_view)
15364 {
15365   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), 0);
15366
15367   return tree_view->priv->level_indentation;
15368 }
15369
15370 /**
15371  * gtk_tree_view_set_tooltip_row:
15372  * @tree_view: a #GtkTreeView
15373  * @tooltip: a #GtkTooltip
15374  * @path: a #GtkTreePath
15375  *
15376  * Sets the tip area of @tooltip to be the area covered by the row at @path.
15377  * See also gtk_tree_view_set_tooltip_column() for a simpler alternative.
15378  * See also gtk_tooltip_set_tip_area().
15379  *
15380  * Since: 2.12
15381  */
15382 void
15383 gtk_tree_view_set_tooltip_row (GtkTreeView *tree_view,
15384                                GtkTooltip  *tooltip,
15385                                GtkTreePath *path)
15386 {
15387   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
15388   g_return_if_fail (GTK_IS_TOOLTIP (tooltip));
15389
15390   gtk_tree_view_set_tooltip_cell (tree_view, tooltip, path, NULL, NULL);
15391 }
15392
15393 /**
15394  * gtk_tree_view_set_tooltip_cell:
15395  * @tree_view: a #GtkTreeView
15396  * @tooltip: a #GtkTooltip
15397  * @path: (allow-none): a #GtkTreePath or %NULL
15398  * @column: (allow-none): a #GtkTreeViewColumn or %NULL
15399  * @cell: (allow-none): a #GtkCellRenderer or %NULL
15400  *
15401  * Sets the tip area of @tooltip to the area @path, @column and @cell have
15402  * in common.  For example if @path is %NULL and @column is set, the tip
15403  * area will be set to the full area covered by @column.  See also
15404  * gtk_tooltip_set_tip_area().
15405  *
15406  * Note that if @path is not specified and @cell is set and part of a column
15407  * containing the expander, the tooltip might not show and hide at the correct
15408  * position.  In such cases @path must be set to the current node under the
15409  * mouse cursor for this function to operate correctly.
15410  *
15411  * See also gtk_tree_view_set_tooltip_column() for a simpler alternative.
15412  *
15413  * Since: 2.12
15414  */
15415 void
15416 gtk_tree_view_set_tooltip_cell (GtkTreeView       *tree_view,
15417                                 GtkTooltip        *tooltip,
15418                                 GtkTreePath       *path,
15419                                 GtkTreeViewColumn *column,
15420                                 GtkCellRenderer   *cell)
15421 {
15422   GtkAllocation allocation;
15423   GdkRectangle rect;
15424
15425   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
15426   g_return_if_fail (GTK_IS_TOOLTIP (tooltip));
15427   g_return_if_fail (column == NULL || GTK_IS_TREE_VIEW_COLUMN (column));
15428   g_return_if_fail (cell == NULL || GTK_IS_CELL_RENDERER (cell));
15429
15430   /* Determine x values. */
15431   if (column && cell)
15432     {
15433       GdkRectangle tmp;
15434       gint start, width;
15435
15436       /* We always pass in path here, whether it is NULL or not.
15437        * For cells in expander columns path must be specified so that
15438        * we can correctly account for the indentation.  This also means
15439        * that the tooltip is constrained vertically by the "Determine y
15440        * values" code below; this is not a real problem since cells actually
15441        * don't stretch vertically in constrast to columns.
15442        */
15443       gtk_tree_view_get_cell_area (tree_view, path, column, &tmp);
15444       gtk_tree_view_column_cell_get_position (column, cell, &start, &width);
15445
15446       gtk_tree_view_convert_bin_window_to_widget_coords (tree_view,
15447                                                          tmp.x + start, 0,
15448                                                          &rect.x, NULL);
15449       rect.width = width;
15450     }
15451   else if (column)
15452     {
15453       GdkRectangle tmp;
15454
15455       gtk_tree_view_get_background_area (tree_view, NULL, column, &tmp);
15456       gtk_tree_view_convert_bin_window_to_widget_coords (tree_view,
15457                                                          tmp.x, 0,
15458                                                          &rect.x, NULL);
15459       rect.width = tmp.width;
15460     }
15461   else
15462     {
15463       gtk_widget_get_allocation (GTK_WIDGET (tree_view), &allocation);
15464       rect.x = 0;
15465       rect.width = allocation.width;
15466     }
15467
15468   /* Determine y values. */
15469   if (path)
15470     {
15471       GdkRectangle tmp;
15472
15473       gtk_tree_view_get_background_area (tree_view, path, NULL, &tmp);
15474       gtk_tree_view_convert_bin_window_to_widget_coords (tree_view,
15475                                                          0, tmp.y,
15476                                                          NULL, &rect.y);
15477       rect.height = tmp.height;
15478     }
15479   else
15480     {
15481       rect.y = 0;
15482       rect.height = tree_view->priv->vadjustment->page_size;
15483     }
15484
15485   gtk_tooltip_set_tip_area (tooltip, &rect);
15486 }
15487
15488 /**
15489  * gtk_tree_view_get_tooltip_context:
15490  * @tree_view: a #GtkTreeView
15491  * @x: the x coordinate (relative to widget coordinates)
15492  * @y: the y coordinate (relative to widget coordinates)
15493  * @keyboard_tip: whether this is a keyboard tooltip or not
15494  * @model: (out) (allow-none): a pointer to receive a #GtkTreeModel or %NULL
15495  * @path: (out) (allow-none): a pointer to receive a #GtkTreePath or %NULL
15496  * @iter: (out) (allow-none): a pointer to receive a #GtkTreeIter or %NULL
15497  *
15498  * This function is supposed to be used in a #GtkWidget::query-tooltip
15499  * signal handler for #GtkTreeView.  The @x, @y and @keyboard_tip values
15500  * which are received in the signal handler, should be passed to this
15501  * function without modification.
15502  *
15503  * The return value indicates whether there is a tree view row at the given
15504  * coordinates (%TRUE) or not (%FALSE) for mouse tooltips.  For keyboard
15505  * tooltips the row returned will be the cursor row.  When %TRUE, then any of
15506  * @model, @path and @iter which have been provided will be set to point to
15507  * that row and the corresponding model.  @x and @y will always be converted
15508  * to be relative to @tree_view's bin_window if @keyboard_tooltip is %FALSE.
15509  *
15510  * Return value: whether or not the given tooltip context points to a row.
15511  *
15512  * Since: 2.12
15513  */
15514 gboolean
15515 gtk_tree_view_get_tooltip_context (GtkTreeView   *tree_view,
15516                                    gint          *x,
15517                                    gint          *y,
15518                                    gboolean       keyboard_tip,
15519                                    GtkTreeModel **model,
15520                                    GtkTreePath  **path,
15521                                    GtkTreeIter   *iter)
15522 {
15523   GtkTreePath *tmppath = NULL;
15524
15525   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), FALSE);
15526   g_return_val_if_fail (x != NULL, FALSE);
15527   g_return_val_if_fail (y != NULL, FALSE);
15528
15529   if (keyboard_tip)
15530     {
15531       gtk_tree_view_get_cursor (tree_view, &tmppath, NULL);
15532
15533       if (!tmppath)
15534         return FALSE;
15535     }
15536   else
15537     {
15538       gtk_tree_view_convert_widget_to_bin_window_coords (tree_view, *x, *y,
15539                                                          x, y);
15540
15541       if (!gtk_tree_view_get_path_at_pos (tree_view, *x, *y,
15542                                           &tmppath, NULL, NULL, NULL))
15543         return FALSE;
15544     }
15545
15546   if (model)
15547     *model = gtk_tree_view_get_model (tree_view);
15548
15549   if (iter)
15550     gtk_tree_model_get_iter (gtk_tree_view_get_model (tree_view),
15551                              iter, tmppath);
15552
15553   if (path)
15554     *path = tmppath;
15555   else
15556     gtk_tree_path_free (tmppath);
15557
15558   return TRUE;
15559 }
15560
15561 static gboolean
15562 gtk_tree_view_set_tooltip_query_cb (GtkWidget  *widget,
15563                                     gint        x,
15564                                     gint        y,
15565                                     gboolean    keyboard_tip,
15566                                     GtkTooltip *tooltip,
15567                                     gpointer    data)
15568 {
15569   GValue value = { 0, };
15570   GValue transformed = { 0, };
15571   GtkTreeIter iter;
15572   GtkTreePath *path;
15573   GtkTreeModel *model;
15574   GtkTreeView *tree_view = GTK_TREE_VIEW (widget);
15575
15576   if (!gtk_tree_view_get_tooltip_context (GTK_TREE_VIEW (widget),
15577                                           &x, &y,
15578                                           keyboard_tip,
15579                                           &model, &path, &iter))
15580     return FALSE;
15581
15582   gtk_tree_model_get_value (model, &iter,
15583                             tree_view->priv->tooltip_column, &value);
15584
15585   g_value_init (&transformed, G_TYPE_STRING);
15586
15587   if (!g_value_transform (&value, &transformed))
15588     {
15589       g_value_unset (&value);
15590       gtk_tree_path_free (path);
15591
15592       return FALSE;
15593     }
15594
15595   g_value_unset (&value);
15596
15597   if (!g_value_get_string (&transformed))
15598     {
15599       g_value_unset (&transformed);
15600       gtk_tree_path_free (path);
15601
15602       return FALSE;
15603     }
15604
15605   gtk_tooltip_set_markup (tooltip, g_value_get_string (&transformed));
15606   gtk_tree_view_set_tooltip_row (tree_view, tooltip, path);
15607
15608   gtk_tree_path_free (path);
15609   g_value_unset (&transformed);
15610
15611   return TRUE;
15612 }
15613
15614 /**
15615  * gtk_tree_view_set_tooltip_column:
15616  * @tree_view: a #GtkTreeView
15617  * @column: an integer, which is a valid column number for @tree_view's model
15618  *
15619  * If you only plan to have simple (text-only) tooltips on full rows, you
15620  * can use this function to have #GtkTreeView handle these automatically
15621  * for you. @column should be set to the column in @tree_view's model
15622  * containing the tooltip texts, or -1 to disable this feature.
15623  *
15624  * When enabled, #GtkWidget::has-tooltip will be set to %TRUE and
15625  * @tree_view will connect a #GtkWidget::query-tooltip signal handler.
15626  *
15627  * Note that the signal handler sets the text with gtk_tooltip_set_markup(),
15628  * so &amp;, &lt;, etc have to be escaped in the text.
15629  *
15630  * Since: 2.12
15631  */
15632 void
15633 gtk_tree_view_set_tooltip_column (GtkTreeView *tree_view,
15634                                   gint         column)
15635 {
15636   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
15637
15638   if (column == tree_view->priv->tooltip_column)
15639     return;
15640
15641   if (column == -1)
15642     {
15643       g_signal_handlers_disconnect_by_func (tree_view,
15644                                             gtk_tree_view_set_tooltip_query_cb,
15645                                             NULL);
15646       gtk_widget_set_has_tooltip (GTK_WIDGET (tree_view), FALSE);
15647     }
15648   else
15649     {
15650       if (tree_view->priv->tooltip_column == -1)
15651         {
15652           g_signal_connect (tree_view, "query-tooltip",
15653                             G_CALLBACK (gtk_tree_view_set_tooltip_query_cb), NULL);
15654           gtk_widget_set_has_tooltip (GTK_WIDGET (tree_view), TRUE);
15655         }
15656     }
15657
15658   tree_view->priv->tooltip_column = column;
15659   g_object_notify (G_OBJECT (tree_view), "tooltip-column");
15660 }
15661
15662 /**
15663  * gtk_tree_view_get_tooltip_column:
15664  * @tree_view: a #GtkTreeView
15665  *
15666  * Returns the column of @tree_view's model which is being used for
15667  * displaying tooltips on @tree_view's rows.
15668  *
15669  * Return value: the index of the tooltip column that is currently being
15670  * used, or -1 if this is disabled.
15671  *
15672  * Since: 2.12
15673  */
15674 gint
15675 gtk_tree_view_get_tooltip_column (GtkTreeView *tree_view)
15676 {
15677   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), 0);
15678
15679   return tree_view->priv->tooltip_column;
15680 }